Merge commit '624e235502c5aa2d17e22dd6c0ccdf080a177310'
[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     videodsp
2046     vp3dsp
2047     vp56dsp
2048     vp8dsp
2049     wma_freqs
2050     wmv2dsp
2051 "
2052
2053 CMDLINE_SELECT="
2054     $ARCH_EXT_LIST
2055     $CONFIG_LIST
2056     $HAVE_LIST_CMDLINE
2057     $THREADS_LIST
2058     asm
2059     cross_compile
2060     debug
2061     extra_warnings
2062     logging
2063     lto
2064     optimizations
2065     rpath
2066     stripping
2067 "
2068
2069 PATHS_LIST="
2070     bindir
2071     datadir
2072     docdir
2073     incdir
2074     libdir
2075     mandir
2076     pkgconfigdir
2077     prefix
2078     shlibdir
2079 "
2080
2081 CMDLINE_SET="
2082     $PATHS_LIST
2083     ar
2084     arch
2085     as
2086     assert_level
2087     build_suffix
2088     cc
2089     objcc
2090     cpu
2091     cross_prefix
2092     custom_allocator
2093     cxx
2094     dep_cc
2095     doxygen
2096     env
2097     extra_version
2098     gas
2099     host_cc
2100     host_cflags
2101     host_ld
2102     host_ldflags
2103     host_libs
2104     host_os
2105     install
2106     ld
2107     logfile
2108     malloc_prefix
2109     nm
2110     optflags
2111     pkg_config
2112     pkg_config_flags
2113     progs_suffix
2114     random_seed
2115     ranlib
2116     samples
2117     strip
2118     sws_max_filter_size
2119     sysinclude
2120     sysroot
2121     target_exec
2122     target_os
2123     target_path
2124     target_samples
2125     tempprefix
2126     toolchain
2127     valgrind
2128     yasmexe
2129 "
2130
2131 CMDLINE_APPEND="
2132     extra_cflags
2133     extra_cxxflags
2134     extra_objcflags
2135     host_cppflags
2136 "
2137
2138 # code dependency declarations
2139
2140 # architecture extensions
2141
2142 armv5te_deps="arm"
2143 armv6_deps="arm"
2144 armv6t2_deps="arm"
2145 armv8_deps="aarch64"
2146 neon_deps_any="aarch64 arm"
2147 intrinsics_neon_deps="neon"
2148 vfp_deps_any="aarch64 arm"
2149 vfpv3_deps="vfp"
2150 setend_deps="arm"
2151
2152 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2153
2154 mipsfpu_deps="mips"
2155 mipsdsp_deps="mips"
2156 mipsdspr2_deps="mips"
2157 mips32r2_deps="mips"
2158 mips32r6_deps="mips"
2159 mips64r2_deps="mips"
2160 mips64r6_deps="mips"
2161 msa_deps="mips"
2162 mmi_deps="mips"
2163
2164 altivec_deps="ppc"
2165 dcbzl_deps="ppc"
2166 ldbrx_deps="ppc"
2167 ppc4xx_deps="ppc"
2168 vsx_deps="altivec"
2169 power8_deps="vsx"
2170
2171 cpunop_deps="i686"
2172 x86_64_select="i686"
2173 x86_64_suggest="fast_cmov"
2174
2175 amd3dnow_deps="mmx"
2176 amd3dnowext_deps="amd3dnow"
2177 i686_deps="x86"
2178 mmx_deps="x86"
2179 mmxext_deps="mmx"
2180 sse_deps="mmxext"
2181 sse2_deps="sse"
2182 sse3_deps="sse2"
2183 ssse3_deps="sse3"
2184 sse4_deps="ssse3"
2185 sse42_deps="sse4"
2186 aesni_deps="sse42"
2187 avx_deps="sse42"
2188 xop_deps="avx"
2189 fma3_deps="avx"
2190 fma4_deps="avx"
2191 avx2_deps="avx"
2192
2193 mmx_external_deps="yasm"
2194 mmx_inline_deps="inline_asm"
2195 mmx_suggest="mmx_external mmx_inline"
2196
2197 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2198     eval dep=\$${ext}_deps
2199     eval ${ext}_external_deps='"${dep}_external"'
2200     eval ${ext}_inline_deps='"${dep}_inline"'
2201     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2202 done
2203
2204 aligned_stack_if_any="aarch64 ppc x86"
2205 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2206 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2207 fast_unaligned_if_any="aarch64 ppc x86"
2208 simd_align_16_if_any="altivec neon sse"
2209
2210 # system capabilities
2211 symver_if_any="symver_asm_label symver_gnu_asm"
2212 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2213
2214 # threading support
2215 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2216 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2217 atomics_win32_if="MemoryBarrier"
2218 atomics_native_if_any="$ATOMICS_LIST"
2219 w32threads_deps="atomics_native"
2220 threads_if_any="$THREADS_LIST"
2221
2222 # subsystems
2223 dct_select="rdft"
2224 dirac_parse_select="golomb"
2225 error_resilience_select="me_cmp"
2226 faandct_deps="faan fdctdsp"
2227 faanidct_deps="faan idctdsp"
2228 frame_thread_encoder_deps="encoders threads"
2229 intrax8_select="error_resilience"
2230 mdct_select="fft"
2231 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2232 mpeg_er_select="error_resilience"
2233 mpegaudio_select="mpegaudiodsp"
2234 mpegaudiodsp_select="dct"
2235 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2236 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2237 qsvdec_select="qsv"
2238 qsvenc_select="qsv"
2239 rdft_select="fft"
2240
2241 # decoders / encoders
2242 aac_decoder_select="imdct15 mdct sinewin"
2243 aac_fixed_decoder_select="mdct sinewin"
2244 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2245 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2246 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2247 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2248 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2249 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2250 adpcm_g722_decoder_select="g722dsp"
2251 adpcm_g722_encoder_select="g722dsp"
2252 aic_decoder_select="golomb idctdsp"
2253 alac_encoder_select="lpc"
2254 als_decoder_select="bswapdsp"
2255 amrnb_decoder_select="lsp"
2256 amrwb_decoder_select="lsp"
2257 amv_decoder_select="sp5x_decoder exif"
2258 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2259 ape_decoder_select="bswapdsp llauddsp"
2260 apng_decoder_select="zlib"
2261 apng_encoder_select="huffyuvencdsp zlib"
2262 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2263 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2264 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2265 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2266 atrac1_decoder_select="mdct sinewin"
2267 atrac3_decoder_select="mdct"
2268 atrac3p_decoder_select="mdct sinewin"
2269 avrn_decoder_select="exif jpegtables"
2270 bink_decoder_select="blockdsp hpeldsp"
2271 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2272 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2273 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2274 cllc_decoder_select="bswapdsp"
2275 comfortnoise_encoder_select="lpc"
2276 cook_decoder_select="audiodsp mdct sinewin"
2277 cscd_decoder_select="lzo"
2278 cscd_decoder_suggest="zlib"
2279 dca_decoder_select="mdct"
2280 dds_decoder_select="texturedsp"
2281 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2282 dnxhd_decoder_select="blockdsp idctdsp"
2283 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2284 dvvideo_decoder_select="dvprofile idctdsp"
2285 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2286 dxa_decoder_select="zlib"
2287 dxv_decoder_select="lzf texturedsp"
2288 eac3_decoder_select="ac3_decoder"
2289 eac3_encoder_select="ac3_encoder"
2290 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2291 eatgq_decoder_select="aandcttables"
2292 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2293 exr_decoder_select="zlib"
2294 ffv1_decoder_select="golomb rangecoder"
2295 ffv1_encoder_select="rangecoder"
2296 ffvhuff_decoder_select="huffyuv_decoder"
2297 ffvhuff_encoder_select="huffyuv_encoder"
2298 fic_decoder_select="golomb"
2299 flac_decoder_select="flacdsp golomb"
2300 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2301 flashsv2_decoder_select="zlib"
2302 flashsv2_encoder_select="zlib"
2303 flashsv_decoder_select="zlib"
2304 flashsv_encoder_select="zlib"
2305 flv_decoder_select="h263_decoder"
2306 flv_encoder_select="h263_encoder"
2307 fourxm_decoder_select="blockdsp bswapdsp"
2308 fraps_decoder_select="bswapdsp huffman"
2309 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2310 g729_decoder_select="audiodsp"
2311 h261_decoder_select="mpegvideo"
2312 h261_encoder_select="aandcttables mpegvideoenc"
2313 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2314 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2315 h263i_decoder_select="h263_decoder"
2316 h263p_decoder_select="h263_decoder"
2317 h263p_encoder_select="h263_encoder"
2318 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2319 h264_decoder_suggest="error_resilience"
2320 h264_qsv_decoder_deps="libmfx"
2321 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2322 h264_qsv_encoder_deps="libmfx"
2323 h264_qsv_encoder_select="qsvenc"
2324 hap_decoder_select="snappy texturedsp"
2325 hap_encoder_deps="libsnappy"
2326 hap_encoder_select="texturedspenc"
2327 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2328 hevc_qsv_decoder_deps="libmfx"
2329 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2330 hevc_qsv_encoder_deps="libmfx"
2331 hevc_qsv_encoder_select="qsvenc"
2332 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2333 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2334 iac_decoder_select="imc_decoder"
2335 imc_decoder_select="bswapdsp fft mdct sinewin"
2336 indeo3_decoder_select="hpeldsp"
2337 indeo4_decoder_select="ividsp"
2338 indeo5_decoder_select="ividsp"
2339 interplay_video_decoder_select="hpeldsp"
2340 jpegls_decoder_select="golomb mjpeg_decoder"
2341 jpegls_encoder_select="golomb"
2342 jv_decoder_select="blockdsp"
2343 lagarith_decoder_select="huffyuvdsp"
2344 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2345 loco_decoder_select="golomb"
2346 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2347 metasound_decoder_select="lsp mdct sinewin"
2348 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2349 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2350 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2351 mjpegb_decoder_select="mjpeg_decoder"
2352 mlp_decoder_select="mlp_parser"
2353 motionpixels_decoder_select="bswapdsp"
2354 mp1_decoder_select="mpegaudio"
2355 mp1float_decoder_select="mpegaudio"
2356 mp2_decoder_select="mpegaudio"
2357 mp2float_decoder_select="mpegaudio"
2358 mp3_decoder_select="mpegaudio"
2359 mp3adu_decoder_select="mpegaudio"
2360 mp3adufloat_decoder_select="mpegaudio"
2361 mp3float_decoder_select="mpegaudio"
2362 mp3on4_decoder_select="mpegaudio"
2363 mp3on4float_decoder_select="mpegaudio"
2364 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2365 mpc8_decoder_select="mpegaudiodsp"
2366 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2367 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2368 mpegvideo_decoder_select="mpegvideo"
2369 mpeg1video_decoder_select="mpegvideo"
2370 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2371 mpeg2video_decoder_select="mpegvideo"
2372 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2373 mpeg2_qsv_decoder_deps="libmfx"
2374 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2375 mpeg2_qsv_encoder_deps="libmfx"
2376 mpeg2_qsv_encoder_select="qsvenc"
2377 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2378 mpeg4_encoder_select="h263_encoder"
2379 msa1_decoder_select="mss34dsp"
2380 msmpeg4v1_decoder_select="h263_decoder"
2381 msmpeg4v2_decoder_select="h263_decoder"
2382 msmpeg4v2_encoder_select="h263_encoder"
2383 msmpeg4v3_decoder_select="h263_decoder"
2384 msmpeg4v3_encoder_select="h263_encoder"
2385 mss2_decoder_select="vc1_decoder"
2386 mts2_decoder_select="mss34dsp"
2387 mxpeg_decoder_select="mjpeg_decoder"
2388 nellymoser_decoder_select="mdct sinewin"
2389 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2390 nuv_decoder_select="idctdsp lzo"
2391 on2avc_decoder_select="mdct"
2392 opus_decoder_deps="swresample"
2393 opus_decoder_select="imdct15"
2394 png_decoder_select="zlib"
2395 png_encoder_select="huffyuvencdsp zlib"
2396 prores_decoder_select="blockdsp idctdsp"
2397 prores_encoder_select="fdctdsp"
2398 qcelp_decoder_select="lsp"
2399 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2400 ra_144_decoder_select="audiodsp"
2401 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2402 ralf_decoder_select="golomb"
2403 rawvideo_decoder_select="bswapdsp"
2404 rscc_decoder_select="zlib"
2405 rtjpeg_decoder_select="me_cmp"
2406 rv10_decoder_select="h263_decoder"
2407 rv10_encoder_select="h263_encoder"
2408 rv20_decoder_select="h263_decoder"
2409 rv20_encoder_select="h263_encoder"
2410 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2411 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2412 screenpresso_decoder_select="zlib"
2413 shorten_decoder_select="golomb"
2414 sipr_decoder_select="lsp"
2415 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2416 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2417 sonic_decoder_select="golomb rangecoder"
2418 sonic_encoder_select="golomb rangecoder"
2419 sonic_ls_encoder_select="golomb rangecoder"
2420 sp5x_decoder_select="mjpeg_decoder"
2421 svq1_decoder_select="hpeldsp"
2422 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2423 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2424 svq3_decoder_suggest="zlib"
2425 tak_decoder_select="audiodsp"
2426 tdsc_decoder_select="zlib mjpeg_decoder"
2427 theora_decoder_select="vp3_decoder"
2428 thp_decoder_select="mjpeg_decoder"
2429 tiff_decoder_suggest="zlib lzma"
2430 tiff_encoder_suggest="zlib"
2431 truehd_decoder_select="mlp_parser"
2432 truemotion2_decoder_select="bswapdsp"
2433 truespeech_decoder_select="bswapdsp"
2434 tscc_decoder_select="zlib"
2435 twinvq_decoder_select="mdct lsp sinewin"
2436 txd_decoder_select="texturedsp"
2437 utvideo_decoder_select="bswapdsp"
2438 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2439 vble_decoder_select="huffyuvdsp"
2440 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2441 vc1_qsv_decoder_deps="libmfx"
2442 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2443 vc1image_decoder_select="vc1_decoder"
2444 vorbis_decoder_select="mdct"
2445 vorbis_encoder_select="mdct"
2446 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2447 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2448 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2449 vp6a_decoder_select="vp6_decoder"
2450 vp6f_decoder_select="vp6_decoder"
2451 vp7_decoder_select="h264pred videodsp vp8dsp"
2452 vp8_decoder_select="h264pred videodsp vp8dsp"
2453 vp9_decoder_select="videodsp vp9_parser"
2454 webp_decoder_select="vp8_decoder exif"
2455 wmalossless_decoder_select="llauddsp"
2456 wmapro_decoder_select="mdct sinewin wma_freqs"
2457 wmav1_decoder_select="mdct sinewin wma_freqs"
2458 wmav1_encoder_select="mdct sinewin wma_freqs"
2459 wmav2_decoder_select="mdct sinewin wma_freqs"
2460 wmav2_encoder_select="mdct sinewin wma_freqs"
2461 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2462 wmv1_decoder_select="h263_decoder"
2463 wmv1_encoder_select="h263_encoder"
2464 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2465 wmv2_encoder_select="h263_encoder wmv2dsp"
2466 wmv3_decoder_select="vc1_decoder"
2467 wmv3image_decoder_select="wmv3_decoder"
2468 xma1_decoder_select="wmapro_decoder"
2469 xma2_decoder_select="wmapro_decoder"
2470 zerocodec_decoder_select="zlib"
2471 zlib_decoder_select="zlib"
2472 zlib_encoder_select="zlib"
2473 zmbv_decoder_select="zlib"
2474 zmbv_encoder_select="zlib"
2475
2476 # hardware accelerators
2477 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2478 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2479 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2480 vaapi_deps="va_va_h"
2481 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2482 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2483 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2484 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2485 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2486 xvmc_deps="X11_extensions_XvMClib_h"
2487
2488 h263_vaapi_hwaccel_deps="vaapi"
2489 h263_vaapi_hwaccel_select="h263_decoder"
2490 h263_videotoolbox_hwaccel_deps="videotoolbox"
2491 h263_videotoolbox_hwaccel_select="h263_decoder"
2492 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2493 h264_d3d11va_hwaccel_deps="d3d11va"
2494 h264_d3d11va_hwaccel_select="h264_decoder"
2495 h264_dxva2_hwaccel_deps="dxva2"
2496 h264_dxva2_hwaccel_select="h264_decoder"
2497 h264_mmal_decoder_deps="mmal"
2498 h264_mmal_decoder_select="mmal"
2499 h264_mmal_hwaccel_deps="mmal"
2500 h264_qsv_hwaccel_deps="libmfx"
2501 h264_vaapi_hwaccel_deps="vaapi"
2502 h264_vaapi_hwaccel_select="h264_decoder"
2503 h264_vda_decoder_deps="vda"
2504 h264_vda_decoder_select="h264_decoder"
2505 h264_vda_hwaccel_deps="vda"
2506 h264_vda_hwaccel_select="h264_decoder"
2507 h264_vda_old_hwaccel_deps="vda"
2508 h264_vda_old_hwaccel_select="h264_decoder"
2509 h264_vdpau_decoder_deps="vdpau"
2510 h264_vdpau_decoder_select="h264_decoder"
2511 h264_vdpau_hwaccel_deps="vdpau"
2512 h264_vdpau_hwaccel_select="h264_decoder"
2513 h264_videotoolbox_hwaccel_deps="videotoolbox"
2514 h264_videotoolbox_hwaccel_select="h264_decoder"
2515 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2516 hevc_d3d11va_hwaccel_select="hevc_decoder"
2517 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2518 hevc_dxva2_hwaccel_select="hevc_decoder"
2519 hevc_qsv_hwaccel_deps="libmfx"
2520 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2521 hevc_vaapi_hwaccel_select="hevc_decoder"
2522 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2523 hevc_vdpau_hwaccel_select="hevc_decoder"
2524 mpeg_vdpau_decoder_deps="vdpau"
2525 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2526 mpeg_xvmc_hwaccel_deps="xvmc"
2527 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2528 mpeg1_vdpau_decoder_deps="vdpau"
2529 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2530 mpeg1_vdpau_hwaccel_deps="vdpau"
2531 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2532 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2533 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2534 mpeg1_xvmc_hwaccel_deps="xvmc"
2535 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2536 mpeg2_crystalhd_decoder_select="crystalhd"
2537 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2538 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2539 mpeg2_dxva2_hwaccel_deps="dxva2"
2540 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2541 mpeg2_mmal_decoder_deps="mmal"
2542 mpeg2_mmal_decoder_select="mmal"
2543 mpeg2_mmal_hwaccel_deps="mmal"
2544 mpeg2_qsv_hwaccel_deps="libmfx"
2545 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2546 mpeg2_vaapi_hwaccel_deps="vaapi"
2547 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2548 mpeg2_vdpau_hwaccel_deps="vdpau"
2549 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2550 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2551 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2552 mpeg2_xvmc_hwaccel_deps="xvmc"
2553 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2554 mpeg4_crystalhd_decoder_select="crystalhd"
2555 mpeg4_mmal_decoder_deps="mmal"
2556 mpeg4_mmal_decoder_select="mmal"
2557 mpeg4_mmal_hwaccel_deps="mmal"
2558 mpeg4_vaapi_hwaccel_deps="vaapi"
2559 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2560 mpeg4_vdpau_decoder_deps="vdpau"
2561 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2562 mpeg4_vdpau_hwaccel_deps="vdpau"
2563 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2564 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2565 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2566 msmpeg4_crystalhd_decoder_select="crystalhd"
2567 vc1_crystalhd_decoder_select="crystalhd"
2568 vc1_d3d11va_hwaccel_deps="d3d11va"
2569 vc1_d3d11va_hwaccel_select="vc1_decoder"
2570 vc1_dxva2_hwaccel_deps="dxva2"
2571 vc1_dxva2_hwaccel_select="vc1_decoder"
2572 vc1_mmal_decoder_deps="mmal"
2573 vc1_mmal_decoder_select="mmal"
2574 vc1_mmal_hwaccel_deps="mmal"
2575 vc1_qsv_hwaccel_deps="libmfx"
2576 vc1_qsv_hwaccel_select="qsvdec_vc1"
2577 vc1_vaapi_hwaccel_deps="vaapi"
2578 vc1_vaapi_hwaccel_select="vc1_decoder"
2579 vc1_vdpau_decoder_deps="vdpau"
2580 vc1_vdpau_decoder_select="vc1_decoder"
2581 vc1_vdpau_hwaccel_deps="vdpau"
2582 vc1_vdpau_hwaccel_select="vc1_decoder"
2583 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2584 vp9_d3d11va_hwaccel_select="vp9_decoder"
2585 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2586 vp9_dxva2_hwaccel_select="vp9_decoder"
2587 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2588 vp9_vaapi_hwaccel_select="vp9_decoder"
2589 wmv3_crystalhd_decoder_select="crystalhd"
2590 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2591 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2592 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2593 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2594 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2595
2596 # parsers
2597 h264_parser_select="h264_decoder"
2598 hevc_parser_select="golomb"
2599 mpegvideo_parser_select="mpegvideo"
2600 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2601 vc1_parser_select="mpegvideo startcode vc1_decoder"
2602
2603 # bitstream_filters
2604 mjpeg2jpeg_bsf_select="jpegtables"
2605
2606 # external libraries
2607 chromaprint_muxer_deps="chromaprint"
2608 libcelt_decoder_deps="libcelt"
2609 libdcadec_decoder_deps="libdcadec"
2610 libfaac_encoder_deps="libfaac"
2611 libfaac_encoder_select="audio_frame_queue"
2612 libfdk_aac_decoder_deps="libfdk_aac"
2613 libfdk_aac_encoder_deps="libfdk_aac"
2614 libfdk_aac_encoder_select="audio_frame_queue"
2615 libgme_demuxer_deps="libgme"
2616 libgsm_decoder_deps="libgsm"
2617 libgsm_encoder_deps="libgsm"
2618 libgsm_ms_decoder_deps="libgsm"
2619 libgsm_ms_encoder_deps="libgsm"
2620 libilbc_decoder_deps="libilbc"
2621 libilbc_encoder_deps="libilbc"
2622 libkvazaar_encoder_deps="libkvazaar"
2623 libmodplug_demuxer_deps="libmodplug"
2624 libmp3lame_encoder_deps="libmp3lame"
2625 libmp3lame_encoder_select="audio_frame_queue"
2626 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2627 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2628 libopencore_amrnb_encoder_select="audio_frame_queue"
2629 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2630 libopenh264_encoder_deps="libopenh264"
2631 libopenjpeg_decoder_deps="libopenjpeg"
2632 libopenjpeg_encoder_deps="libopenjpeg"
2633 libopus_decoder_deps="libopus"
2634 libopus_encoder_deps="libopus"
2635 libopus_encoder_select="audio_frame_queue"
2636 libschroedinger_decoder_deps="libschroedinger"
2637 libschroedinger_encoder_deps="libschroedinger"
2638 libshine_encoder_deps="libshine"
2639 libshine_encoder_select="audio_frame_queue"
2640 libspeex_decoder_deps="libspeex"
2641 libspeex_encoder_deps="libspeex"
2642 libspeex_encoder_select="audio_frame_queue"
2643 libtheora_encoder_deps="libtheora"
2644 libtwolame_encoder_deps="libtwolame"
2645 libutvideo_decoder_deps="libutvideo"
2646 libutvideo_encoder_deps="libutvideo"
2647 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2648 libvorbis_decoder_deps="libvorbis"
2649 libvorbis_encoder_deps="libvorbis"
2650 libvorbis_encoder_select="audio_frame_queue"
2651 libvpx_vp8_decoder_deps="libvpx"
2652 libvpx_vp8_encoder_deps="libvpx"
2653 libvpx_vp9_decoder_deps="libvpx"
2654 libvpx_vp9_encoder_deps="libvpx"
2655 libwavpack_encoder_deps="libwavpack"
2656 libwebp_encoder_deps="libwebp"
2657 libwebp_anim_encoder_deps="libwebp"
2658 libx262_encoder_deps="libx262"
2659 libx264_encoder_deps="libx264"
2660 libx264rgb_encoder_deps="libx264"
2661 libx264rgb_encoder_select="libx264_encoder"
2662 libx265_encoder_deps="libx265"
2663 libxavs_encoder_deps="libxavs"
2664 libxvid_encoder_deps="libxvid"
2665 libzvbi_teletext_decoder_deps="libzvbi"
2666 nvenc_encoder_deps="nvenc"
2667 nvenc_h264_encoder_deps="nvenc"
2668 nvenc_hevc_encoder_deps="nvenc"
2669
2670 # demuxers / muxers
2671 ac3_demuxer_select="ac3_parser"
2672 asf_demuxer_select="riffdec"
2673 asf_o_demuxer_select="riffdec"
2674 asf_muxer_select="riffenc"
2675 asf_stream_muxer_select="asf_muxer"
2676 avi_demuxer_select="iso_media riffdec exif"
2677 avi_muxer_select="riffenc"
2678 avisynth_demuxer_deps="avisynth"
2679 avisynth_demuxer_select="riffdec"
2680 caf_demuxer_select="iso_media riffdec"
2681 dash_muxer_select="mp4_muxer"
2682 dirac_demuxer_select="dirac_parser"
2683 dts_demuxer_select="dca_parser"
2684 dtshd_demuxer_select="dca_parser"
2685 dv_demuxer_select="dvprofile"
2686 dv_muxer_select="dvprofile"
2687 dxa_demuxer_select="riffdec"
2688 eac3_demuxer_select="ac3_parser"
2689 f4v_muxer_select="mov_muxer"
2690 flac_demuxer_select="flac_parser"
2691 hds_muxer_select="flv_muxer"
2692 hls_muxer_select="mpegts_muxer"
2693 image2_alias_pix_demuxer_select="image2_demuxer"
2694 image2_brender_pix_demuxer_select="image2_demuxer"
2695 ipod_muxer_select="mov_muxer"
2696 ismv_muxer_select="mov_muxer"
2697 libnut_demuxer_deps="libnut"
2698 libnut_muxer_deps="libnut"
2699 matroska_audio_muxer_select="matroska_muxer"
2700 matroska_demuxer_select="iso_media riffdec"
2701 matroska_demuxer_suggest="bzlib lzo zlib"
2702 matroska_muxer_select="iso_media riffenc"
2703 mmf_muxer_select="riffenc"
2704 mov_demuxer_select="iso_media riffdec"
2705 mov_demuxer_suggest="zlib"
2706 mov_muxer_select="iso_media riffenc rtpenc_chain"
2707 mp3_demuxer_select="mpegaudio_parser"
2708 mp4_muxer_select="mov_muxer"
2709 mpegts_demuxer_select="iso_media"
2710 mpegts_muxer_select="adts_muxer latm_muxer"
2711 mpegtsraw_demuxer_select="mpegts_demuxer"
2712 mxf_d10_muxer_select="mxf_muxer"
2713 mxf_opatom_muxer_select="mxf_muxer"
2714 nut_muxer_select="riffenc"
2715 nuv_demuxer_select="riffdec"
2716 oga_muxer_select="ogg_muxer"
2717 ogg_demuxer_select="dirac_parse"
2718 opus_muxer_select="ogg_muxer"
2719 psp_muxer_select="mov_muxer"
2720 rtp_demuxer_select="sdp_demuxer"
2721 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2722 rtsp_demuxer_select="http_protocol rtpdec"
2723 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2724 sap_demuxer_select="sdp_demuxer"
2725 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2726 sdp_demuxer_select="rtpdec"
2727 smoothstreaming_muxer_select="ismv_muxer"
2728 spdif_muxer_select="aac_parser"
2729 spx_muxer_select="ogg_muxer"
2730 swf_demuxer_suggest="zlib"
2731 tak_demuxer_select="tak_parser"
2732 tg2_muxer_select="mov_muxer"
2733 tgp_muxer_select="mov_muxer"
2734 vobsub_demuxer_select="mpegps_demuxer"
2735 w64_demuxer_select="wav_demuxer"
2736 w64_muxer_select="wav_muxer"
2737 wav_demuxer_select="riffdec"
2738 wav_muxer_select="riffenc"
2739 webm_muxer_select="iso_media riffenc"
2740 webm_dash_manifest_demuxer_select="matroska_demuxer"
2741 wtv_demuxer_select="mpegts_demuxer riffdec"
2742 wtv_muxer_select="mpegts_muxer riffenc"
2743 xmv_demuxer_select="riffdec"
2744 xwma_demuxer_select="riffdec"
2745
2746 # indevs / outdevs
2747 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2748 alsa_outdev_deps="alsa_asoundlib_h"
2749 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2750 avfoundation_indev_select="avfoundation"
2751 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2752 caca_outdev_deps="libcaca"
2753 decklink_indev_deps="decklink pthreads"
2754 decklink_indev_extralibs="-lstdc++"
2755 decklink_outdev_deps="decklink pthreads"
2756 decklink_outdev_extralibs="-lstdc++"
2757 dshow_indev_deps="IBaseFilter"
2758 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2759 dv1394_indev_deps="dv1394"
2760 dv1394_indev_select="dv_demuxer"
2761 fbdev_indev_deps="linux_fb_h"
2762 fbdev_outdev_deps="linux_fb_h"
2763 gdigrab_indev_deps="CreateDIBSection"
2764 gdigrab_indev_extralibs="-lgdi32"
2765 gdigrab_indev_select="bmp_decoder"
2766 iec61883_indev_deps="libiec61883"
2767 jack_indev_deps="jack_jack_h"
2768 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2769 lavfi_indev_deps="avfilter"
2770 libcdio_indev_deps="libcdio"
2771 libdc1394_indev_deps="libdc1394"
2772 libv4l2_indev_deps="libv4l2"
2773 openal_indev_deps="openal"
2774 opengl_outdev_deps="opengl"
2775 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2776 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2777 pulse_indev_deps="libpulse"
2778 pulse_outdev_deps="libpulse"
2779 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2780 qtkit_indev_select="qtkit"
2781 sdl_outdev_deps="sdl"
2782 sndio_indev_deps="sndio_h"
2783 sndio_outdev_deps="sndio_h"
2784 v4l_indev_deps="linux_videodev_h"
2785 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2786 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2787 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2788 vfwcap_indev_extralibs="-lavicap32"
2789 x11grab_indev_deps="x11grab"
2790 x11grab_xcb_indev_deps="libxcb"
2791 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2792 xv_outdev_extralibs="-lXv -lX11 -lXext"
2793
2794 # protocols
2795 async_protocol_deps="threads"
2796 bluray_protocol_deps="libbluray"
2797 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2798 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2799 ffrtmpcrypt_protocol_select="tcp_protocol"
2800 ffrtmphttp_protocol_deps="!librtmp_protocol"
2801 ffrtmphttp_protocol_select="http_protocol"
2802 ftp_protocol_select="tcp_protocol"
2803 gopher_protocol_select="network"
2804 http_protocol_select="tcp_protocol"
2805 httpproxy_protocol_select="tcp_protocol"
2806 https_protocol_select="tls_protocol"
2807 icecast_protocol_select="http_protocol"
2808 librtmp_protocol_deps="librtmp"
2809 librtmpe_protocol_deps="librtmp"
2810 librtmps_protocol_deps="librtmp"
2811 librtmpt_protocol_deps="librtmp"
2812 librtmpte_protocol_deps="librtmp"
2813 libsmbclient_protocol_deps="libsmbclient gplv3"
2814 libssh_protocol_deps="libssh"
2815 mmsh_protocol_select="http_protocol"
2816 mmst_protocol_select="network"
2817 rtmp_protocol_deps="!librtmp_protocol"
2818 rtmp_protocol_select="tcp_protocol"
2819 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2820 rtmps_protocol_deps="!librtmp_protocol"
2821 rtmps_protocol_select="tls_protocol"
2822 rtmpt_protocol_select="ffrtmphttp_protocol"
2823 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2824 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2825 rtp_protocol_select="udp_protocol"
2826 sctp_protocol_deps="struct_sctp_event_subscribe"
2827 sctp_protocol_select="network"
2828 srtp_protocol_select="rtp_protocol"
2829 tcp_protocol_select="network"
2830 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2831 tls_gnutls_protocol_select="tcp_protocol"
2832 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2833 tls_openssl_protocol_select="tcp_protocol"
2834 tls_schannel_protocol_deps="schannel"
2835 tls_schannel_protocol_select="tcp_protocol"
2836 tls_securetransport_protocol_deps="securetransport"
2837 tls_securetransport_protocol_select="tcp_protocol"
2838 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2839 udp_protocol_select="network"
2840 udplite_protocol_select="network"
2841 unix_protocol_deps="sys_un_h"
2842 unix_protocol_select="network"
2843
2844 # filters
2845 afftfilt_filter_deps="avcodec"
2846 afftfilt_filter_select="fft"
2847 amovie_filter_deps="avcodec avformat"
2848 aresample_filter_deps="swresample"
2849 ass_filter_deps="libass"
2850 asyncts_filter_deps="avresample"
2851 atempo_filter_deps="avcodec"
2852 atempo_filter_select="rdft"
2853 azmq_filter_deps="libzmq"
2854 blackframe_filter_deps="gpl"
2855 boxblur_filter_deps="gpl"
2856 bs2b_filter_deps="libbs2b"
2857 colormatrix_filter_deps="gpl"
2858 cover_rect_filter_deps="avcodec avformat gpl"
2859 cropdetect_filter_deps="gpl"
2860 delogo_filter_deps="gpl"
2861 deshake_filter_select="pixelutils"
2862 drawtext_filter_deps="libfreetype"
2863 ebur128_filter_deps="gpl"
2864 eq_filter_deps="gpl"
2865 fftfilt_filter_deps="avcodec"
2866 fftfilt_filter_select="rdft"
2867 find_rect_filter_deps="avcodec avformat gpl"
2868 firequalizer_filter_deps="avcodec"
2869 firequalizer_filter_select="rdft"
2870 flite_filter_deps="libflite"
2871 frei0r_filter_deps="frei0r dlopen"
2872 frei0r_src_filter_deps="frei0r dlopen"
2873 fspp_filter_deps="gpl"
2874 geq_filter_deps="gpl"
2875 histeq_filter_deps="gpl"
2876 hqdn3d_filter_deps="gpl"
2877 hwupload_cuda_filter_deps="cuda"
2878 interlace_filter_deps="gpl"
2879 kerndeint_filter_deps="gpl"
2880 ladspa_filter_deps="ladspa dlopen"
2881 mcdeint_filter_deps="avcodec gpl"
2882 movie_filter_deps="avcodec avformat"
2883 mpdecimate_filter_deps="gpl"
2884 mpdecimate_filter_select="pixelutils"
2885 mptestsrc_filter_deps="gpl"
2886 negate_filter_deps="lut_filter"
2887 nnedi_filter_deps="gpl"
2888 ocr_filter_deps="libtesseract"
2889 ocv_filter_deps="libopencv"
2890 owdenoise_filter_deps="gpl"
2891 pan_filter_deps="swresample"
2892 perspective_filter_deps="gpl"
2893 phase_filter_deps="gpl"
2894 pp7_filter_deps="gpl"
2895 pp_filter_deps="gpl postproc"
2896 pullup_filter_deps="gpl"
2897 removelogo_filter_deps="avcodec avformat swscale"
2898 repeatfields_filter_deps="gpl"
2899 resample_filter_deps="avresample"
2900 rubberband_filter_deps="librubberband"
2901 sab_filter_deps="gpl swscale"
2902 scale2ref_filter_deps="swscale"
2903 scale_filter_deps="swscale"
2904 select_filter_select="pixelutils"
2905 showcqt_filter_deps="avcodec avformat swscale"
2906 showcqt_filter_select="fft"
2907 showfreqs_filter_deps="avcodec"
2908 showfreqs_filter_select="fft"
2909 showspectrum_filter_deps="avcodec"
2910 showspectrum_filter_select="fft"
2911 showspectrumpic_filter_deps="avcodec"
2912 showspectrumpic_filter_select="fft"
2913 smartblur_filter_deps="gpl swscale"
2914 sofalizer_filter_deps="netcdf avcodec"
2915 sofalizer_filter_select="fft"
2916 spectrumsynth_filter_deps="avcodec"
2917 spectrumsynth_filter_select="fft"
2918 spp_filter_deps="gpl avcodec"
2919 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2920 stereo3d_filter_deps="gpl"
2921 subtitles_filter_deps="avformat avcodec libass"
2922 super2xsai_filter_deps="gpl"
2923 pixfmts_super2xsai_test_deps="super2xsai_filter"
2924 tinterlace_filter_deps="gpl"
2925 tinterlace_merge_test_deps="tinterlace_filter"
2926 tinterlace_pad_test_deps="tinterlace_filter"
2927 uspp_filter_deps="gpl avcodec"
2928 vidstabdetect_filter_deps="libvidstab"
2929 vidstabtransform_filter_deps="libvidstab"
2930 zmq_filter_deps="libzmq"
2931 zoompan_filter_deps="swscale"
2932 zscale_filter_deps="libzimg"
2933
2934 # examples
2935 avcodec_example_deps="avcodec avutil"
2936 avio_dir_cmd="avformat avutil"
2937 avio_reading="avformat avcodec avutil"
2938 decoding_encoding_example_deps="avcodec avformat avutil"
2939 demuxing_decoding_example_deps="avcodec avformat avutil"
2940 extract_mvs_example_deps="avcodec avformat avutil"
2941 filter_audio_example_deps="avfilter avutil"
2942 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2943 filtering_video_example_deps="avfilter avcodec avformat avutil"
2944 metadata_example_deps="avformat avutil"
2945 muxing_example_deps="avcodec avformat avutil swscale"
2946 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2947 remuxing_example_deps="avcodec avformat avutil"
2948 resampling_audio_example_deps="avutil swresample"
2949 scaling_video_example_deps="avutil swscale"
2950 transcode_aac_example_deps="avcodec avformat swresample"
2951 transcoding_example_deps="avfilter avcodec avformat avutil"
2952
2953 # libraries, in linking order
2954 avcodec_deps="avutil"
2955 avdevice_deps="avformat avcodec avutil"
2956 avfilter_deps="avutil"
2957 avformat_deps="avcodec avutil"
2958 avresample_deps="avutil"
2959 postproc_deps="avutil gpl"
2960 swresample_deps="avutil"
2961 swscale_deps="avutil"
2962
2963 # programs
2964 ffmpeg_deps="avcodec avfilter avformat swresample"
2965 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2966                null_filter
2967                setpts_filter trim_filter"
2968 ffplay_deps="avcodec avformat swscale swresample sdl"
2969 ffplay_libs='$sdl_libs'
2970 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2971 ffprobe_deps="avcodec avformat"
2972 ffserver_deps="avformat fork sarestart"
2973 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2974
2975 # documentation
2976 podpages_deps="perl"
2977 manpages_deps="perl pod2man"
2978 htmlpages_deps="perl"
2979 htmlpages_deps_any="makeinfo_html texi2html"
2980 txtpages_deps="perl makeinfo"
2981 doc_deps_any="manpages htmlpages podpages txtpages"
2982
2983 # default parameters
2984
2985 logfile="config.log"
2986
2987 # installation paths
2988 prefix_default="/usr/local"
2989 bindir_default='${prefix}/bin'
2990 datadir_default='${prefix}/share/ffmpeg'
2991 docdir_default='${prefix}/share/doc/ffmpeg'
2992 incdir_default='${prefix}/include'
2993 libdir_default='${prefix}/lib'
2994 mandir_default='${prefix}/share/man'
2995
2996 # toolchain
2997 ar_default="ar"
2998 cc_default="gcc"
2999 cxx_default="g++"
3000 host_cc_default="gcc"
3001 cp_f="cp -f"
3002 doxygen_default="doxygen"
3003 install="install"
3004 ln_s="ln -s -f"
3005 nm_default="nm -g"
3006 objformat="elf"
3007 pkg_config_default=pkg-config
3008 ranlib_default="ranlib"
3009 strip_default="strip"
3010 yasmexe_default="yasm"
3011 windres_default="windres"
3012
3013 # OS
3014 target_os_default=$(tolower $(uname -s))
3015 host_os=$target_os_default
3016
3017 # machine
3018 if test "$target_os_default" = aix; then
3019     arch_default=$(uname -p)
3020     strip_default="strip -X32_64"
3021 else
3022     arch_default=$(uname -m)
3023 fi
3024 cpu="generic"
3025 intrinsics="none"
3026
3027 # configurable options
3028 enable $PROGRAM_LIST
3029 enable $DOCUMENT_LIST
3030 enable $EXAMPLE_LIST
3031 enable $(filter_out avresample $LIBRARY_LIST)
3032 enable stripping
3033
3034 enable asm
3035 enable debug
3036 enable doc
3037 enable faan faandct faanidct
3038 enable optimizations
3039 enable runtime_cpudetect
3040 enable safe_bitstream_reader
3041 enable static
3042 enable swscale_alpha
3043 enable valgrind_backtrace
3044
3045 sws_max_filter_size_default=256
3046 set_default sws_max_filter_size
3047
3048 # Enable hwaccels by default.
3049 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3050 enable xlib
3051
3052 # build settings
3053 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3054 LIBPREF="lib"
3055 LIBSUF=".a"
3056 FULLNAME='$(NAME)$(BUILDSUF)'
3057 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3058 SLIBPREF="lib"
3059 SLIBSUF=".so"
3060 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3061 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3062 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3063 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3064 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3065 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3066
3067 asflags_filter=echo
3068 cflags_filter=echo
3069 ldflags_filter=echo
3070
3071 AS_C='-c'
3072 AS_O='-o $@'
3073 CC_C='-c'
3074 CC_E='-E -o $@'
3075 CC_O='-o $@'
3076 CXX_C='-c'
3077 CXX_O='-o $@'
3078 OBJCC_C='-c'
3079 OBJCC_E='-E -o $@'
3080 OBJCC_O='-o $@'
3081 LD_O='-o $@'
3082 LD_LIB='-l%'
3083 LD_PATH='-L'
3084 HOSTCC_C='-c'
3085 HOSTCC_E='-E -o $@'
3086 HOSTCC_O='-o $@'
3087 HOSTLD_O='-o $@'
3088
3089 host_libs='-lm'
3090 host_cflags_filter=echo
3091 host_ldflags_filter=echo
3092
3093 target_path='$(CURDIR)'
3094
3095 # since the object filename is not given with the -MM flag, the compiler
3096 # is only able to print the basename, and we must add the path ourselves
3097 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3098 DEPFLAGS='-MM'
3099
3100 # find source path
3101 if test -f configure; then
3102     source_path=.
3103 else
3104     source_path=$(cd $(dirname "$0"); pwd)
3105     case "$source_path" in
3106         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3107     esac
3108     test -e "$source_path/config.h" &&
3109         die "Out of tree builds are impossible with config.h in source dir."
3110 fi
3111
3112 for v in "$@"; do
3113     r=${v#*=}
3114     l=${v%"$r"}
3115     r=$(sh_quote "$r")
3116     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3117 done
3118
3119 find_things(){
3120     thing=$1
3121     pattern=$2
3122     file=$source_path/$3
3123     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3124 }
3125
3126 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3127 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3128 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3129 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3130 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3131 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3132 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3133 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3134 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3135 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3136 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3137
3138 ALL_COMPONENTS="
3139     $BSF_LIST
3140     $DECODER_LIST
3141     $DEMUXER_LIST
3142     $ENCODER_LIST
3143     $FILTER_LIST
3144     $HWACCEL_LIST
3145     $INDEV_LIST
3146     $MUXER_LIST
3147     $OUTDEV_LIST
3148     $PARSER_LIST
3149     $PROTOCOL_LIST
3150 "
3151
3152 for n in $COMPONENT_LIST; do
3153     v=$(toupper ${n%s})_LIST
3154     eval enable \$$v
3155     eval ${n}_if_any="\$$v"
3156 done
3157
3158 enable $ARCH_EXT_LIST
3159
3160 die_unknown(){
3161     echo "Unknown option \"$1\"."
3162     echo "See $0 --help for available options."
3163     exit 1
3164 }
3165
3166 print_in_columns() {
3167     cols=$(expr $ncols / 24)
3168     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3169 }
3170
3171 show_list() {
3172     suffix=_$1
3173     shift
3174     echo $* | sed s/$suffix//g | print_in_columns
3175     exit 0
3176 }
3177
3178 rand_list(){
3179     IFS=', '
3180     set -- $*
3181     unset IFS
3182     for thing; do
3183         comp=${thing%:*}
3184         prob=${thing#$comp}
3185         prob=${prob#:}
3186         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3187         echo "prob ${prob:-0.5}"
3188         printf '%s\n' $comp
3189     done
3190 }
3191
3192 do_random(){
3193     action=$1
3194     shift
3195     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3196     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3197 }
3198
3199 for opt do
3200     optval="${opt#*=}"
3201     case "$opt" in
3202         --extra-ldflags=*)
3203             add_ldflags $optval
3204         ;;
3205         --extra-ldexeflags=*)
3206             add_ldexeflags $optval
3207         ;;
3208         --extra-ldlibflags=*)
3209             add_ldlibflags $optval
3210         ;;
3211         --extra-libs=*)
3212             add_extralibs $optval
3213         ;;
3214         --disable-devices)
3215             disable $INDEV_LIST $OUTDEV_LIST
3216         ;;
3217         --enable-debug=*)
3218             debuglevel="$optval"
3219         ;;
3220         --disable-programs)
3221             disable $PROGRAM_LIST
3222         ;;
3223         --disable-everything)
3224             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3225         ;;
3226         --disable-all)
3227             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3228             disable $LIBRARY_LIST $PROGRAM_LIST doc
3229             enable avutil
3230         ;;
3231         --enable-random|--disable-random)
3232             action=${opt%%-random}
3233             do_random ${action#--} $COMPONENT_LIST
3234         ;;
3235         --enable-random=*|--disable-random=*)
3236             action=${opt%%-random=*}
3237             do_random ${action#--} $optval
3238         ;;
3239         --enable-*=*|--disable-*=*)
3240             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3241             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3242             eval list=\$$(toupper $thing)_LIST
3243             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3244             list=$(filter "$name" $list)
3245             [ "$list" = "" ] && warn "Option $opt did not match anything"
3246             $action $list
3247         ;;
3248         --enable-?*|--disable-?*)
3249             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3250             if is_in $option $COMPONENT_LIST; then
3251                 test $action = disable && action=unset
3252                 eval $action \$$(toupper ${option%s})_LIST
3253             elif is_in $option $CMDLINE_SELECT; then
3254                 $action $option
3255             else
3256                 die_unknown $opt
3257             fi
3258         ;;
3259         --list-*)
3260             NAME="${opt#--list-}"
3261             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3262             NAME=${NAME%s}
3263             eval show_list $NAME \$$(toupper $NAME)_LIST
3264         ;;
3265         --help|-h) show_help
3266         ;;
3267         --fatal-warnings) enable fatal_warnings
3268         ;;
3269         *)
3270             optname="${opt%%=*}"
3271             optname="${optname#--}"
3272             optname=$(echo "$optname" | sed 's/-/_/g')
3273             if is_in $optname $CMDLINE_SET; then
3274                 eval $optname='$optval'
3275             elif is_in $optname $CMDLINE_APPEND; then
3276                 append $optname "$optval"
3277             else
3278                 die_unknown $opt
3279             fi
3280         ;;
3281     esac
3282 done
3283
3284 for e in $env; do
3285     eval "export $e"
3286 done
3287
3288 disabled logging && logfile=/dev/null
3289
3290 # Disable all the library-specific components if the library itself
3291 # is disabled, see AVCODEC_LIST and following _LIST variables.
3292
3293 disable_components(){
3294     disabled ${1} && disable $(
3295         eval components="\$$(toupper ${1})_COMPONENTS"
3296         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3297     )
3298 }
3299
3300 map 'disable_components $v' $LIBRARY_LIST
3301
3302 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3303 set >> $logfile
3304
3305 test -n "$valgrind" && toolchain="valgrind-memcheck"
3306
3307 case "$toolchain" in
3308     *-asan)
3309         cc_default="${toolchain%-asan}"
3310         add_cflags  -fsanitize=address
3311         add_ldflags -fsanitize=address
3312     ;;
3313     *-tsan)
3314         cc_default="${toolchain%-tsan}"
3315         add_cflags  -fsanitize=thread -pie
3316         add_ldflags -fsanitize=thread -pie
3317         case "$toolchain" in
3318             gcc-tsan)
3319                 add_cflags  -fPIC
3320                 add_ldflags -fPIC
3321                 ;;
3322         esac
3323     ;;
3324     *-usan)
3325         cc_default="${toolchain%-usan}"
3326         add_cflags  -fsanitize=undefined
3327         add_ldflags -fsanitize=undefined
3328     ;;
3329     valgrind-*)
3330         target_exec_default="valgrind"
3331         case "$toolchain" in
3332             valgrind-massif)
3333                 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"
3334                 ;;
3335             valgrind-memcheck)
3336                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3337                 ;;
3338         esac
3339     ;;
3340     msvc)
3341         # Check whether the current MSVC version needs the C99 converter.
3342         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3343         # support enough of C99 to build ffmpeg. Default to the new
3344         # behaviour if the regexp was unable to match anything, since this
3345         # successfully parses the version number of existing supported
3346         # versions that require the converter (MSVC 2010 and 2012).
3347         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3348         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3349             cc_default="cl"
3350         else
3351             cc_default="c99wrap cl"
3352         fi
3353         ld_default="$source_path/compat/windows/mslink"
3354         nm_default="dumpbin -symbols"
3355         ar_default="lib"
3356         case "$arch" in
3357         arm*)
3358             as_default="armasm"
3359             ;;
3360         esac
3361         target_os_default="win32"
3362         # Use a relative path for TMPDIR. This makes sure all the
3363         # ffconf temp files are written with a relative path, avoiding
3364         # issues with msys/win32 path conversion for MSVC parameters
3365         # such as -Fo<file> or -out:<file>.
3366         TMPDIR=.
3367     ;;
3368     icl)
3369         cc_default="icl"
3370         ld_default="xilink"
3371         nm_default="dumpbin -symbols"
3372         ar_default="xilib"
3373         target_os_default="win32"
3374         TMPDIR=.
3375     ;;
3376     gcov)
3377         add_cflags  -fprofile-arcs -ftest-coverage
3378         add_ldflags -fprofile-arcs -ftest-coverage
3379     ;;
3380     hardened)
3381         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3382         add_cflags   -fno-strict-overflow -fstack-protector-all
3383         add_ldflags  -Wl,-z,relro -Wl,-z,now
3384     ;;
3385     ?*)
3386         die "Unknown toolchain $toolchain"
3387     ;;
3388 esac
3389
3390 test -n "$cross_prefix" && enable cross_compile
3391
3392 if enabled cross_compile; then
3393     test -n "$arch" && test -n "$target_os" ||
3394         die "Must specify target arch and OS when cross-compiling"
3395 fi
3396
3397 ar_default="${cross_prefix}${ar_default}"
3398 cc_default="${cross_prefix}${cc_default}"
3399 cxx_default="${cross_prefix}${cxx_default}"
3400 nm_default="${cross_prefix}${nm_default}"
3401 pkg_config_default="${cross_prefix}${pkg_config_default}"
3402 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3403     ranlib_default="${cross_prefix}${ranlib_default} -D"
3404 else
3405     ranlib_default="${cross_prefix}${ranlib_default}"
3406 fi
3407 strip_default="${cross_prefix}${strip_default}"
3408 windres_default="${cross_prefix}${windres_default}"
3409
3410 sysinclude_default="${sysroot}/usr/include"
3411
3412 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3413     target_exec target_os yasmexe
3414 enabled cross_compile || host_cc_default=$cc
3415 set_default host_cc
3416
3417 pkg_config_fail_message=""
3418 if ! $pkg_config --version >/dev/null 2>&1; then
3419     warn "$pkg_config not found, library detection may fail."
3420     pkg_config=false
3421 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3422     pkg_config_fail_message="
3423 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3424 fi
3425
3426 if test $doxygen != $doxygen_default && \
3427   ! $doxygen --version >/dev/null 2>&1; then
3428     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3429 fi
3430
3431 exesuf() {
3432     case $1 in
3433         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3434     esac
3435 }
3436
3437 EXESUF=$(exesuf $target_os)
3438 HOSTEXESUF=$(exesuf $host_os)
3439
3440 # set temporary file name
3441 : ${TMPDIR:=$TEMPDIR}
3442 : ${TMPDIR:=$TMP}
3443 : ${TMPDIR:=/tmp}
3444
3445 if [ -n "$tempprefix" ] ; then
3446     mktemp(){
3447         echo $tempprefix.${HOSTNAME}.${UID}
3448     }
3449 elif ! check_cmd mktemp -u XXXXXX; then
3450     # simple replacement for missing mktemp
3451     # NOT SAFE FOR GENERAL USE
3452     mktemp(){
3453         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3454     }
3455 fi
3456
3457 tmpfile(){
3458     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3459         (set -C; exec > $tmp) 2>/dev/null ||
3460         die "Unable to create temporary file in $TMPDIR."
3461     append TMPFILES $tmp
3462     eval $1=$tmp
3463 }
3464
3465 trap 'rm -f -- $TMPFILES' EXIT
3466
3467 tmpfile TMPASM .asm
3468 tmpfile TMPC   .c
3469 tmpfile TMPCPP .cpp
3470 tmpfile TMPE   $EXESUF
3471 tmpfile TMPH   .h
3472 tmpfile TMPM   .m
3473 tmpfile TMPO   .o
3474 tmpfile TMPS   .S
3475 tmpfile TMPSH  .sh
3476 tmpfile TMPV   .ver
3477
3478 unset -f mktemp
3479
3480 chmod +x $TMPE
3481
3482 # make sure we can execute files in $TMPDIR
3483 cat > $TMPSH 2>> $logfile <<EOF
3484 #! /bin/sh
3485 EOF
3486 chmod +x $TMPSH >> $logfile 2>&1
3487 if ! $TMPSH >> $logfile 2>&1; then
3488     cat <<EOF
3489 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3490 variable to another directory and make sure that it is not mounted noexec.
3491 EOF
3492     die "Sanity test failed."
3493 fi
3494
3495 armasm_flags(){
3496     for flag; do
3497         case $flag in
3498             # Filter out MSVC cl.exe options from cflags that shouldn't
3499             # be passed to gas-preprocessor
3500             -M[TD]*)                                            ;;
3501             *)                  echo $flag                      ;;
3502         esac
3503    done
3504 }
3505
3506 ccc_flags(){
3507     for flag; do
3508         case $flag in
3509             -std=c99)           echo -c99                       ;;
3510             -mcpu=*)            echo -arch ${flag#*=}           ;;
3511             -mieee)             echo -ieee                      ;;
3512             -O*|-fast)          echo $flag                      ;;
3513             -fno-math-errno)    echo -assume nomath_errno       ;;
3514             -g)                 echo -g3                        ;;
3515             -Wall)              echo -msg_enable level2         ;;
3516             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3517             -Wl,*)              echo $flag                      ;;
3518             -f*|-W*)                                            ;;
3519             *)                  echo $flag                      ;;
3520         esac
3521    done
3522 }
3523
3524 cparser_flags(){
3525     for flag; do
3526         case $flag in
3527             -Wno-switch)             echo -Wno-switch-enum ;;
3528             -Wno-format-zero-length) ;;
3529             -Wdisabled-optimization) ;;
3530             -Wno-pointer-sign)       echo -Wno-other ;;
3531             *)                       echo $flag ;;
3532         esac
3533     done
3534 }
3535
3536 msvc_common_flags(){
3537     for flag; do
3538         case $flag in
3539             # In addition to specifying certain flags under the compiler
3540             # specific filters, they must be specified here as well or else the
3541             # generic catch all at the bottom will print the original flag.
3542             -Wall)                ;;
3543             -std=c99)             ;;
3544             # Common flags
3545             -fomit-frame-pointer) ;;
3546             -g)                   echo -Z7 ;;
3547             -fno-math-errno)      ;;
3548             -fno-common)          ;;
3549             -fno-signed-zeros)    ;;
3550             -fPIC)                ;;
3551             -mthumb)              ;;
3552             -march=*)             ;;
3553             -lz)                  echo zlib.lib ;;
3554             -lavifil32)           echo vfw32.lib ;;
3555             -lavicap32)           echo vfw32.lib user32.lib ;;
3556             -lx264)               echo libx264.lib ;;
3557             -l*)                  echo ${flag#-l}.lib ;;
3558             -LARGEADDRESSAWARE)   echo $flag ;;
3559             -L*)                  echo -libpath:${flag#-L} ;;
3560             *)                    echo $flag ;;
3561         esac
3562     done
3563 }
3564
3565 msvc_flags(){
3566     msvc_common_flags "$@"
3567     for flag; do
3568         case $flag in
3569             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3570                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3571                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3572                                        -wd4307 \
3573                                        -wd4273 -wd4554 -wd4701 ;;
3574         esac
3575     done
3576 }
3577
3578 icl_flags(){
3579     msvc_common_flags "$@"
3580     for flag; do
3581         case $flag in
3582             # Despite what Intel's documentation says -Wall, which is supported
3583             # on Windows, does enable remarks so disable them here.
3584             -Wall)                echo $flag -Qdiag-disable:remark ;;
3585             -std=c99)             echo -Qstd=c99 ;;
3586             -flto)                echo -ipo ;;
3587         esac
3588     done
3589 }
3590
3591 icc_flags(){
3592     for flag; do
3593         case $flag in
3594             -flto)                echo -ipo ;;
3595             *)                    echo $flag ;;
3596         esac
3597     done
3598 }
3599
3600 pgi_flags(){
3601     for flag; do
3602         case $flag in
3603             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3604             -fomit-frame-pointer) echo -Mnoframe ;;
3605             -g)                   echo -gopt ;;
3606             *)                    echo $flag ;;
3607         esac
3608     done
3609 }
3610
3611 suncc_flags(){
3612     for flag; do
3613         case $flag in
3614             -march=*|-mcpu=*)
3615                 case "${flag#*=}" in
3616                     native)                   echo -xtarget=native       ;;
3617                     v9|niagara)               echo -xarch=sparc          ;;
3618                     ultrasparc)               echo -xarch=sparcvis       ;;
3619                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3620                     i586|pentium)             echo -xchip=pentium        ;;
3621                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3622                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3623                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3624                     pentium4*)          echo -xtarget=pentium4           ;;
3625                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3626                     *-sse3)             echo -xarch=sse3                 ;;
3627                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3628                     bonnell)                   echo -xarch=ssse3         ;;
3629                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3630                     westmere)                  echo -xtarget=westmere    ;;
3631                     silvermont)                echo -xarch=sse4_2        ;;
3632                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3633                     core-avx*|ivybridge|haswell|broadwell)
3634                                                echo -xarch=avx           ;;
3635                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3636                     btver1)                    echo -xarch=amdsse4a      ;;
3637                     btver2|bdver*)             echo -xarch=avx           ;;
3638                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3639                     k8|opteron|athlon64|athlon-fx)
3640                                                echo -xarch=sse2a         ;;
3641                     athlon*)                   echo -xarch=pentium_proa  ;;
3642                 esac
3643                 ;;
3644             -std=c99)             echo -xc99              ;;
3645             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3646             -fPIC)                echo -KPIC -xcode=pic32 ;;
3647             -W*,*)                echo $flag              ;;
3648             -f*-*|-W*|-mimpure-text)                      ;;
3649             -shared)              echo -G                 ;;
3650             *)                    echo $flag              ;;
3651         esac
3652     done
3653 }
3654
3655 tms470_flags(){
3656     for flag; do
3657         case $flag in
3658             -march=*|-mcpu=*)
3659                 case "${flag#*=}" in
3660                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3661                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3662                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3663                     armv6*|arm11*)          echo -mv=6   ;;
3664                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3665                                             echo -mv=5e  ;;
3666                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3667                 esac
3668                 ;;
3669             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3670             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3671             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3672             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3673             -msoft-float)   echo --float_support=vfplib       ;;
3674             -O[0-3]|-mf=*)  echo $flag                        ;;
3675             -g)             echo -g -mn                       ;;
3676             -pds=*)         echo $flag                        ;;
3677             -D*|-I*)        echo $flag                        ;;
3678             --gcc|--abi=*)  echo $flag                        ;;
3679             -me)            echo $flag                        ;;
3680         esac
3681     done
3682 }
3683
3684 probe_cc(){
3685     pfx=$1
3686     _cc=$2
3687     first=$3
3688
3689     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3690     unset _ld_o _ldflags _ld_lib _ld_path
3691     unset _depflags _DEPCMD _DEPFLAGS
3692     _flags_filter=echo
3693
3694     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3695         true # no-op to avoid reading stdin in following checks
3696     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3697         _type=llvm_gcc
3698         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3699         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3700         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3701         _cflags_speed='-O3'
3702         _cflags_size='-Os'
3703     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3704         _type=gcc
3705         gcc_version=$($_cc --version | head -n1)
3706         gcc_basever=$($_cc -dumpversion)
3707         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3708         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3709         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3710         case $gcc_basever in
3711             2) ;;
3712             2.*) ;;
3713             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3714         esac
3715         if [ "$first" = true ]; then
3716             case $gcc_basever in
3717                 4.2*)
3718                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3719             esac
3720         fi
3721         _cflags_speed='-O3'
3722         _cflags_size='-Os'
3723     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3724         _type=icc
3725         _ident=$($_cc --version | head -n1)
3726         _depflags='-MMD'
3727         _cflags_speed='-O3'
3728         _cflags_size='-Os'
3729         _cflags_noopt='-O1'
3730         _flags_filter=icc_flags
3731     elif $_cc -v 2>&1 | grep -q xlc; then
3732         _type=xlc
3733         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3734         _cflags_speed='-O5'
3735         _cflags_size='-O5 -qcompact'
3736     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3737         _type=ccc
3738         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3739         _DEPFLAGS='-M'
3740         _cflags_speed='-fast'
3741         _cflags_size='-O1'
3742         _flags_filter=ccc_flags
3743     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3744         test -d "$sysroot" || die "No valid sysroot specified."
3745         _type=armcc
3746         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3747         armcc_conf="$PWD/armcc.conf"
3748         $_cc --arm_linux_configure                 \
3749              --arm_linux_config_file="$armcc_conf" \
3750              --configure_sysroot="$sysroot"        \
3751              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3752              die "Error creating armcc configuration file."
3753         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3754         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3755         as_default="${cross_prefix}gcc"
3756         _depflags='-MMD'
3757         _cflags_speed='-O3'
3758         _cflags_size='-Os'
3759     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3760         _type=tms470
3761         _ident=$($_cc -version | head -n1 | tr -s ' ')
3762         _flags='--gcc --abi=eabi -me'
3763         _cc_e='-ppl -fe=$@'
3764         _cc_o='-fe=$@'
3765         _depflags='-ppa -ppd=$(@:.o=.d)'
3766         _cflags_speed='-O3 -mf=5'
3767         _cflags_size='-O3 -mf=2'
3768         _flags_filter=tms470_flags
3769     elif $_cc -v 2>&1 | grep -q clang; then
3770         _type=clang
3771         _ident=$($_cc --version 2>/dev/null | head -n1)
3772         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3773         _cflags_speed='-O3'
3774         _cflags_size='-Os'
3775     elif $_cc -V 2>&1 | grep -q Sun; then
3776         _type=suncc
3777         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3778         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3779         _DEPFLAGS='-xM1 -xc99'
3780         _ldflags='-std=c99'
3781         _cflags_speed='-O5'
3782         _cflags_size='-O5 -xspace'
3783         _flags_filter=suncc_flags
3784     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3785         _type=pathscale
3786         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3787         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3788         _cflags_speed='-O2'
3789         _cflags_size='-Os'
3790         _flags_filter='filter_out -Wdisabled-optimization'
3791     elif $_cc -v 2>&1 | grep -q Open64; then
3792         _type=open64
3793         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3794         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3795         _cflags_speed='-O2'
3796         _cflags_size='-Os'
3797         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3798     elif $_cc -V 2>&1 | grep -q Portland; then
3799         _type=pgi
3800         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3801         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3802         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3803         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3804         _cflags_noopt="-O"
3805         _flags_filter=pgi_flags
3806     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3807         _type=armasm
3808         _ident=$($_cc | head -n1)
3809         # 4509: "This form of conditional instruction is deprecated"
3810         _flags="-nologo -ignore 4509"
3811         _flags_filter=armasm_flags
3812     elif $_cc 2>&1 | grep -q Intel; then
3813         _type=icl
3814         _ident=$($_cc 2>&1 | head -n1)
3815         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3816         # Not only is O3 broken on 13.x+ but it is slower on all previous
3817         # versions (tested) as well.
3818         _cflags_speed="-O2"
3819         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3820         if $_cc 2>&1 | grep -q Linker; then
3821             _ld_o='-out:$@'
3822         else
3823             _ld_o='-Fe$@'
3824         fi
3825         _cc_o='-Fo$@'
3826         _cc_e='-P'
3827         _flags_filter=icl_flags
3828         _ld_lib='lib%.a'
3829         _ld_path='-libpath:'
3830         # -Qdiag-error to make icl error when seeing certain unknown arguments
3831         _flags='-nologo -Qdiag-error:4044,10157'
3832         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3833         # with MSVC which enables it by default.
3834         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3835         disable stripping
3836     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3837         _type=msvc
3838         _ident=$($_cc 2>&1 | head -n1)
3839         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3840         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3841         _cflags_speed="-O2"
3842         _cflags_size="-O1"
3843         if $_cc -nologo- 2>&1 | grep -q Linker; then
3844             _ld_o='-out:$@'
3845         else
3846             _ld_o='-Fe$@'
3847         fi
3848         _cc_o='-Fo$@'
3849         _cc_e='-P -Fi$@'
3850         _flags_filter=msvc_flags
3851         _ld_lib='lib%.a'
3852         _ld_path='-libpath:'
3853         _flags='-nologo'
3854         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3855         disable stripping
3856     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3857         _type=cparser
3858         _ident=$($_cc --version | head -n1)
3859         _depflags='-MMD'
3860         _cflags_speed='-O4'
3861         _cflags_size='-O2'
3862         _flags_filter=cparser_flags
3863     fi
3864
3865     eval ${pfx}_type=\$_type
3866     eval ${pfx}_ident=\$_ident
3867 }
3868
3869 set_ccvars(){
3870     eval ${1}_C=\${_cc_c-\${${1}_C}}
3871     eval ${1}_E=\${_cc_e-\${${1}_E}}
3872     eval ${1}_O=\${_cc_o-\${${1}_O}}
3873
3874     if [ -n "$_depflags" ]; then
3875         eval ${1}_DEPFLAGS=\$_depflags
3876     else
3877         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3878         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3879         eval DEP${1}FLAGS=\$_flags
3880     fi
3881 }
3882
3883 probe_cc cc "$cc" "true"
3884 cflags_filter=$_flags_filter
3885 cflags_speed=$_cflags_speed
3886 cflags_size=$_cflags_size
3887 cflags_noopt=$_cflags_noopt
3888 add_cflags $_flags $_cflags
3889 cc_ldflags=$_ldflags
3890 set_ccvars CC
3891
3892 probe_cc hostcc "$host_cc"
3893 host_cflags_filter=$_flags_filter
3894 add_host_cflags  $_flags $_cflags
3895 set_ccvars HOSTCC
3896
3897 test -n "$cc_type" && enable $cc_type ||
3898     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3899
3900 : ${as_default:=$cc}
3901 : ${objcc_default:=$cc}
3902 : ${dep_cc_default:=$cc}
3903 : ${ld_default:=$cc}
3904 : ${host_ld_default:=$host_cc}
3905 set_default ar as objcc dep_cc ld host_ld windres
3906
3907 probe_cc as "$as"
3908 asflags_filter=$_flags_filter
3909 add_asflags $_flags $_cflags
3910 set_ccvars AS
3911
3912 probe_cc objcc "$objcc"
3913 objcflags_filter=$_flags_filter
3914 add_objcflags $_flags $_cflags
3915 set_ccvars OBJC
3916
3917 probe_cc ld "$ld"
3918 ldflags_filter=$_flags_filter
3919 add_ldflags $_flags $_ldflags
3920 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3921 LD_O=${_ld_o-$LD_O}
3922 LD_LIB=${_ld_lib-$LD_LIB}
3923 LD_PATH=${_ld_path-$LD_PATH}
3924
3925 probe_cc hostld "$host_ld"
3926 host_ldflags_filter=$_flags_filter
3927 add_host_ldflags $_flags $_ldflags
3928 HOSTLD_O=${_ld_o-$HOSTLD_O}
3929
3930 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3931     probe_cc depcc "$dep_cc"
3932     CCDEP=${_DEPCMD:-$DEPCMD}
3933     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3934     DEPCCFLAGS=$_flags
3935 fi
3936
3937 if $ar 2>&1 | grep -q Microsoft; then
3938     arflags="-nologo"
3939     ar_o='-out:$@'
3940 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3941     arflags="rq"
3942     ar_o='$@'
3943 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3944     arflags='-Xany -r -c'
3945     ar_o='$@'
3946 elif $ar 2>&1 | grep -q "\[D\] "; then
3947     arflags="rcD"
3948     ar_o='$@'
3949 else
3950     arflags="rc"
3951     ar_o='$@'
3952 fi
3953
3954 add_cflags $extra_cflags
3955 add_cxxflags $extra_cxxflags
3956 add_objcflags $extra_objcflags
3957 add_asflags $extra_cflags
3958
3959 if test -n "$sysroot"; then
3960     case "$cc_type" in
3961         gcc|llvm_gcc|clang)
3962             add_cppflags --sysroot="$sysroot"
3963             add_ldflags --sysroot="$sysroot"
3964 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3965             add_cppflags -isysroot "$sysroot"
3966             add_ldflags -isysroot "$sysroot"
3967         ;;
3968         tms470)
3969             add_cppflags -I"$sysinclude"
3970             add_ldflags  --sysroot="$sysroot"
3971         ;;
3972     esac
3973 fi
3974
3975 if test "$cpu" = host; then
3976     enabled cross_compile &&
3977         die "--cpu=host makes no sense when cross-compiling."
3978
3979     case "$cc_type" in
3980         gcc|llvm_gcc)
3981             check_native(){
3982                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3983                 sed -n "/cc1.*$1=/{
3984                             s/.*$1=\\([^ ]*\\).*/\\1/
3985                             p
3986                             q
3987                         }" $TMPE
3988             }
3989             cpu=$(check_native -march || check_native -mcpu)
3990         ;;
3991         clang)
3992             check_native(){
3993                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3994                 sed -n "/cc1.*-target-cpu /{
3995                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
3996                             p
3997                             q
3998                         }" $TMPE
3999             }
4000             cpu=$(check_native -march)
4001         ;;
4002     esac
4003
4004     test "${cpu:-host}" = host &&
4005         die "--cpu=host not supported with compiler $cc"
4006 fi
4007
4008 # Deal with common $arch aliases
4009 case "$arch" in
4010     aarch64|arm64)
4011         arch="aarch64"
4012     ;;
4013     arm*|iPad*|iPhone*)
4014         arch="arm"
4015     ;;
4016     mips*|IP*)
4017         case "$arch" in
4018         *el)
4019             add_cppflags -EL
4020             add_ldflags -EL
4021         ;;
4022         *eb)
4023             add_cppflags -EB
4024             add_ldflags -EB
4025         ;;
4026         esac
4027         arch="mips"
4028     ;;
4029     parisc*|hppa*)
4030         arch="parisc"
4031     ;;
4032     "Power Macintosh"|ppc*|powerpc*)
4033         arch="ppc"
4034     ;;
4035     s390|s390x)
4036         arch="s390"
4037     ;;
4038     sh4|sh)
4039         arch="sh4"
4040     ;;
4041     sun4u|sparc*)
4042         arch="sparc"
4043     ;;
4044     tilegx|tile-gx)
4045         arch="tilegx"
4046     ;;
4047     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4048         arch="x86"
4049     ;;
4050 esac
4051
4052 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4053 enable $arch
4054
4055 # Add processor-specific flags
4056 if enabled aarch64; then
4057
4058     case $cpu in
4059         armv*)
4060             cpuflags="-march=$cpu"
4061         ;;
4062         *)
4063             cpuflags="-mcpu=$cpu"
4064         ;;
4065     esac
4066
4067 elif enabled alpha; then
4068
4069     cpuflags="-mcpu=$cpu"
4070
4071 elif enabled arm; then
4072
4073     check_arm_arch() {
4074         check_cpp_condition stddef.h \
4075             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4076             $cpuflags
4077     }
4078
4079     probe_arm_arch() {
4080         if   check_arm_arch 4;        then echo armv4;
4081         elif check_arm_arch 4T;       then echo armv4t;
4082         elif check_arm_arch 5;        then echo armv5;
4083         elif check_arm_arch 5E;       then echo armv5e;
4084         elif check_arm_arch 5T;       then echo armv5t;
4085         elif check_arm_arch 5TE;      then echo armv5te;
4086         elif check_arm_arch 5TEJ;     then echo armv5te;
4087         elif check_arm_arch 6;        then echo armv6;
4088         elif check_arm_arch 6J;       then echo armv6j;
4089         elif check_arm_arch 6K;       then echo armv6k;
4090         elif check_arm_arch 6Z;       then echo armv6z;
4091         elif check_arm_arch 6ZK;      then echo armv6zk;
4092         elif check_arm_arch 6T2;      then echo armv6t2;
4093         elif check_arm_arch 7;        then echo armv7;
4094         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4095         elif check_arm_arch 7S;       then echo armv7-a;
4096         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4097         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4098         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4099         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4100         fi
4101     }
4102
4103     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4104
4105     case $cpu in
4106         armv*)
4107             cpuflags="-march=$cpu"
4108             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4109         ;;
4110         *)
4111             cpuflags="-mcpu=$cpu"
4112             case $cpu in
4113                 cortex-a*)                               subarch=armv7a  ;;
4114                 cortex-r*)                               subarch=armv7r  ;;
4115                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4116                 arm11*)                                  subarch=armv6   ;;
4117                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4118                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4119                 *)                             subarch=$(probe_arm_arch) ;;
4120             esac
4121         ;;
4122     esac
4123
4124     case "$subarch" in
4125         armv5t*)    enable fast_clz                ;;
4126         armv[6-8]*)
4127             enable fast_clz
4128             disabled fast_unaligned || enable fast_unaligned
4129             ;;
4130     esac
4131
4132 elif enabled avr32; then
4133
4134     case $cpu in
4135         ap7[02]0[0-2])
4136             subarch="avr32_ap"
4137             cpuflags="-mpart=$cpu"
4138         ;;
4139         ap)
4140             subarch="avr32_ap"
4141             cpuflags="-march=$cpu"
4142         ;;
4143         uc3[ab]*)
4144             subarch="avr32_uc"
4145             cpuflags="-mcpu=$cpu"
4146         ;;
4147         uc)
4148             subarch="avr32_uc"
4149             cpuflags="-march=$cpu"
4150         ;;
4151     esac
4152
4153 elif enabled bfin; then
4154
4155     cpuflags="-mcpu=$cpu"
4156
4157 elif enabled mips; then
4158
4159     cpuflags="-march=$cpu"
4160
4161     case $cpu in
4162         24kc)
4163             disable mips32r6
4164             disable mips64r2
4165             disable mips64r6
4166             disable mipsfpu
4167             disable mipsdsp
4168             disable mipsdspr2
4169             disable msa
4170         ;;
4171         24kf*)
4172             disable mips32r6
4173             disable mips64r2
4174             disable mips64r6
4175             disable mipsdsp
4176             disable mipsdspr2
4177             disable msa
4178         ;;
4179         24kec|34kc|1004kc)
4180             disable mips32r6
4181             disable mips64r2
4182             disable mips64r6
4183             disable mipsfpu
4184             disable mipsdspr2
4185             disable msa
4186         ;;
4187         24kef*|34kf*|1004kf*)
4188             disable mips32r6
4189             disable mips64r2
4190             disable mips64r6
4191             disable mipsdspr2
4192             disable msa
4193         ;;
4194         74kc)
4195             disable mips32r6
4196             disable mips64r2
4197             disable mips64r6
4198             disable mipsfpu
4199             disable msa
4200         ;;
4201         74kf)
4202             disable mips32r6
4203             disable mips64r2
4204             disable mips64r6
4205             disable msa
4206         ;;
4207         p5600)
4208             disable mips32r6
4209             disable mips64r2
4210             disable mips64r6
4211             disable mipsdsp
4212             disable mipsdspr2
4213             check_cflags "-mtune=p5600" &&
4214             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4215             add_asflags "-mfp64"
4216         ;;
4217         i6400)
4218             disable mips32r2
4219             disable mips32r6
4220             disable mips64r2
4221             disable mipsdsp
4222             disable mipsdspr2
4223             check_cflags "-mtune=i6400 -mabi=64" &&
4224             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4225             check_ldflags "-mabi=64" &&
4226             add_asflags "-mfp64"
4227         ;;
4228         loongson*)
4229             disable mips32r2
4230             disable mips32r6
4231             disable mips64r2
4232             disable mips64r6
4233             disable mipsfpu
4234             disable mipsdsp
4235             disable mipsdspr2
4236             disable msa
4237             enable local_aligned_8 local_aligned_16 local_aligned_32
4238             enable simd_align_16
4239             enable fast_64bit
4240             enable fast_clz
4241             enable fast_cmov
4242             enable fast_unaligned
4243             disable aligned_stack
4244             case $cpu in
4245                 loongson3*)
4246                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4247                 ;;
4248                 loongson2e)
4249                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4250                 ;;
4251                 loongson2f)
4252                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4253                 ;;
4254             esac
4255         ;;
4256         generic)
4257             disable mips64r6
4258             disable msa
4259         ;;
4260         *)
4261             # Unknown CPU. Disable everything.
4262             warn "unknown CPU. Disabling all MIPS optimizations."
4263             disable mipsfpu
4264             disable mips32r2
4265             disable mips32r6
4266             disable mips64r2
4267             disable mips64r6
4268             disable mipsdsp
4269             disable mipsdspr2
4270             disable msa
4271         ;;
4272     esac
4273
4274 elif enabled ppc; then
4275
4276     disable ldbrx
4277
4278     case $(tolower $cpu) in
4279         601|ppc601|powerpc601)
4280             cpuflags="-mcpu=601"
4281             disable altivec
4282         ;;
4283         603*|ppc603*|powerpc603*)
4284             cpuflags="-mcpu=603"
4285             disable altivec
4286         ;;
4287         604*|ppc604*|powerpc604*)
4288             cpuflags="-mcpu=604"
4289             disable altivec
4290         ;;
4291         g3|75*|ppc75*|powerpc75*)
4292             cpuflags="-mcpu=750"
4293             disable altivec
4294         ;;
4295         g4|745*|ppc745*|powerpc745*)
4296             cpuflags="-mcpu=7450"
4297             disable vsx
4298         ;;
4299         74*|ppc74*|powerpc74*)
4300             cpuflags="-mcpu=7400"
4301             disable vsx
4302         ;;
4303         g5|970|ppc970|powerpc970)
4304             cpuflags="-mcpu=970"
4305             disable vsx
4306         ;;
4307         power[3-6]*)
4308             cpuflags="-mcpu=$cpu"
4309             disable vsx
4310         ;;
4311         power[7-8]*)
4312             cpuflags="-mcpu=$cpu"
4313         ;;
4314         cell)
4315             cpuflags="-mcpu=cell"
4316             enable ldbrx
4317             disable vsx
4318         ;;
4319         e500mc)
4320             cpuflags="-mcpu=e500mc"
4321             disable altivec
4322         ;;
4323         e500v2)
4324             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4325             disable altivec
4326             disable dcbzl
4327         ;;
4328         e500)
4329             cpuflags="-mcpu=8540 -mhard-float"
4330             disable altivec
4331             disable dcbzl
4332         ;;
4333     esac
4334
4335 elif enabled sparc; then
4336
4337     case $cpu in
4338         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4339             cpuflags="-mcpu=$cpu"
4340         ;;
4341         ultrasparc*|niagara[234])
4342             cpuflags="-mcpu=$cpu"
4343         ;;
4344     esac
4345
4346 elif enabled x86; then
4347
4348     case $cpu in
4349         i[345]86|pentium)
4350             cpuflags="-march=$cpu"
4351             disable i686
4352             disable mmx
4353         ;;
4354         # targets that do NOT support nopl and conditional mov (cmov)
4355         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4356             cpuflags="-march=$cpu"
4357             disable i686
4358         ;;
4359         # targets that do support nopl and conditional mov (cmov)
4360         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4361         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4362             cpuflags="-march=$cpu"
4363             enable i686
4364             enable fast_cmov
4365         ;;
4366         # targets that do support conditional mov but on which it's slow
4367         pentium4|pentium4m|prescott|nocona)
4368             cpuflags="-march=$cpu"
4369             enable i686
4370             disable fast_cmov
4371         ;;
4372     esac
4373
4374 fi
4375
4376 if [ "$cpu" != generic ]; then
4377     add_cflags  $cpuflags
4378     add_asflags $cpuflags
4379     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4380 fi
4381
4382 # compiler sanity check
4383 check_exec <<EOF
4384 int main(void){ return 0; }
4385 EOF
4386 if test "$?" != 0; then
4387     echo "$cc is unable to create an executable file."
4388     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4389         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4390         echo "Only do this if you know what cross compiling means."
4391     fi
4392     die "C compiler test failed."
4393 fi
4394
4395 add_cppflags -D_ISOC99_SOURCE
4396 add_cxxflags -D__STDC_CONSTANT_MACROS
4397 check_cflags -std=c99
4398 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4399 #include <stdlib.h>
4400 EOF
4401 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4402 #include <stdlib.h>
4403 EOF
4404
4405 add_host_cppflags -D_ISOC99_SOURCE
4406 check_host_cflags -std=c99
4407 check_host_cflags -Wall
4408 check_host_cflags -O3
4409
4410 check_64bit(){
4411     arch32=$1
4412     arch64=$2
4413     expr=$3
4414     check_code cc "" "int test[2*($expr) - 1]" &&
4415         subarch=$arch64 || subarch=$arch32
4416 }
4417
4418 case "$arch" in
4419     aarch64|alpha|ia64)
4420         spic=$shared
4421     ;;
4422     mips)
4423         check_64bit mips mips64 '_MIPS_SIM > 1'
4424         spic=$shared
4425     ;;
4426     parisc)
4427         check_64bit parisc parisc64 'sizeof(void *) > 4'
4428         spic=$shared
4429     ;;
4430     ppc)
4431         check_64bit ppc ppc64 'sizeof(void *) > 4'
4432         spic=$shared
4433     ;;
4434     s390)
4435         check_64bit s390 s390x 'sizeof(void *) > 4'
4436         spic=$shared
4437     ;;
4438     sparc)
4439         check_64bit sparc sparc64 'sizeof(void *) > 4'
4440         spic=$shared
4441     ;;
4442     x86)
4443         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4444         # Treat x32 as x64 for now. Note it also needs spic=$shared
4445         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4446             subarch=x86_64
4447         if test "$subarch" = "x86_64"; then
4448             spic=$shared
4449         fi
4450     ;;
4451     ppc)
4452         check_cc <<EOF && subarch="ppc64"
4453         int test[(int)sizeof(char*) - 7];
4454 EOF
4455     ;;
4456 esac
4457
4458 enable $subarch
4459 enabled spic && enable_weak pic
4460
4461 # OS specific
4462 case $target_os in
4463     aix)
4464         SHFLAGS=-shared
4465         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4466         enabled shared && add_ldflags -Wl,-brtl
4467         ;;
4468     android)
4469         disable symver
4470         enable section_data_rel_ro
4471         SLIB_INSTALL_NAME='$(SLIBNAME)'
4472         SLIB_INSTALL_LINKS=
4473         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4474         ;;
4475     haiku)
4476         prefix_default="/boot/common"
4477         network_extralibs="-lnetwork"
4478         host_libs=
4479         ;;
4480     sunos)
4481         SHFLAGS='-shared -Wl,-h,$$(@F)'
4482         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4483         network_extralibs="-lsocket -lnsl"
4484         add_cppflags -D__EXTENSIONS__
4485         # When using suncc to build, the Solaris linker will mark
4486         # an executable with each instruction set encountered by
4487         # the Solaris assembler.  As our libraries contain their own
4488         # guards for processor-specific code, instead suppress
4489         # generation of the HWCAPS ELF section on Solaris x86 only.
4490         enabled_all suncc x86 &&
4491             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4492             add_ldflags -Wl,-M,mapfile
4493         nm_default='nm -P -g'
4494         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4495         ;;
4496     netbsd)
4497         disable symver
4498         oss_indev_extralibs="-lossaudio"
4499         oss_outdev_extralibs="-lossaudio"
4500         enabled gcc || check_ldflags -Wl,-zmuldefs
4501         ;;
4502     openbsd|bitrig)
4503         disable symver
4504         SHFLAGS='-shared'
4505         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4506         SLIB_INSTALL_LINKS=
4507         oss_indev_extralibs="-lossaudio"
4508         oss_outdev_extralibs="-lossaudio"
4509         ;;
4510     dragonfly)
4511         disable symver
4512         ;;
4513     freebsd)
4514         ;;
4515     bsd/os)
4516         add_extralibs -lpoll -lgnugetopt
4517         strip="strip -d"
4518         ;;
4519     darwin)
4520         enabled ppc && add_asflags -force_cpusubtype_ALL
4521         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4522         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4523         strip="${strip} -x"
4524         add_ldflags -Wl,-dynamic,-search_paths_first
4525         SLIBSUF=".dylib"
4526         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4527         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4528         objformat="macho"
4529         enabled x86_64 && objformat="macho64"
4530         enabled_any pic shared x86_64 ||
4531             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4532         ;;
4533     msys*)
4534         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4535         ;;
4536     mingw32*|mingw64*)
4537         if test $target_os = "mingw32ce"; then
4538             disable network
4539         else
4540             target_os=mingw32
4541         fi
4542         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4543         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4544         LIBTARGET=i386
4545         if enabled x86_64; then
4546             LIBTARGET="i386:x86-64"
4547         elif enabled arm; then
4548             LIBTARGET=arm-wince
4549         fi
4550         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4551         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4552         shlibdir_default="$bindir_default"
4553         SLIBPREF=""
4554         SLIBSUF=".dll"
4555         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4556         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4557         dlltool="${cross_prefix}dlltool"
4558         if check_cmd lib.exe -list; then
4559             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4560             if enabled x86_64; then
4561                 LIBTARGET=x64
4562             fi
4563         elif check_cmd $dlltool --version; then
4564             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4565         fi
4566         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4567         SLIB_INSTALL_LINKS=
4568         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4569         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4570         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4571         objformat="win32"
4572         ranlib=:
4573         enable dos_paths
4574         check_ldflags -Wl,--nxcompat,--dynamicbase
4575         # Lets work around some stupidity in binutils.
4576         # ld will strip relocations from executables even though we need them
4577         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4578         # however ld then forgets what the entry point should be (oops) so we
4579         # have to manually (re)set it.
4580         if enabled x86_32; then
4581             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4582         elif enabled x86_64; then
4583             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4584             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4585             # Set image base >4GB for extra entropy with HEASLR
4586             add_ldexeflags -Wl,--image-base,0x140000000
4587             append SHFLAGS -Wl,--image-base,0x180000000
4588         fi
4589         ;;
4590     win32|win64)
4591         disable symver
4592         if enabled shared; then
4593             # Link to the import library instead of the normal static library
4594             # for shared libs.
4595             LD_LIB='%.lib'
4596             # Cannot build both shared and static libs with MSVC or icl.
4597             disable static
4598         fi
4599         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4600         shlibdir_default="$bindir_default"
4601         SLIBPREF=""
4602         SLIBSUF=".dll"
4603         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4604         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4605         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4606         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4607         SLIB_INSTALL_LINKS=
4608         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4609         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4610         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4611         objformat="win32"
4612         ranlib=:
4613         enable dos_paths
4614         ;;
4615     cygwin*)
4616         target_os=cygwin
4617         shlibdir_default="$bindir_default"
4618         SLIBPREF="cyg"
4619         SLIBSUF=".dll"
4620         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4621         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4622         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4623         SLIB_INSTALL_LINKS=
4624         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4625         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4626         objformat="win32"
4627         enable dos_paths
4628         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4629         ;;
4630     *-dos|freedos|opendos)
4631         network_extralibs="-lsocket"
4632         objformat="coff"
4633         enable dos_paths
4634         add_cppflags -U__STRICT_ANSI__
4635         ;;
4636     linux)
4637         enable dv1394
4638         enable section_data_rel_ro
4639         ;;
4640     irix*)
4641         target_os=irix
4642         ranlib="echo ignoring ranlib"
4643         ;;
4644     os/2*)
4645         strip="lxlite -CS"
4646         ln_s="cp -f"
4647         objformat="aout"
4648         add_cppflags -D_GNU_SOURCE
4649         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4650         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4651         LIBSUF="_s.a"
4652         SLIBPREF=""
4653         SLIBSUF=".dll"
4654         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4655         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4656         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4657             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4658             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4659             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4660             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4661         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4662             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4663         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4664         enable dos_paths
4665         enable_weak os2threads
4666         ;;
4667     gnu/kfreebsd)
4668         add_cppflags -D_BSD_SOURCE
4669         ;;
4670     gnu)
4671         ;;
4672     qnx)
4673         add_cppflags -D_QNX_SOURCE
4674         network_extralibs="-lsocket"
4675         ;;
4676     symbian)
4677         SLIBSUF=".dll"
4678         enable dos_paths
4679         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4680         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4681         add_ldflags -Wl,--target1-abs,--no-undefined \
4682                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4683                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4684         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4685                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4686                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4687         ;;
4688     osf1)
4689         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4690         ;;
4691     minix)
4692         ;;
4693     plan9)
4694         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4695                      -D_REENTRANT_SOURCE        \
4696                      -D_RESEARCH_SOURCE         \
4697                      -DFD_SETSIZE=96            \
4698                      -DHAVE_SOCK_OPTS
4699         add_compat strtod.o strtod=avpriv_strtod
4700         network_extralibs='-lbsd'
4701         exeobjs=compat/plan9/main.o
4702         disable ffserver
4703         cp_f='cp'
4704         ;;
4705     none)
4706         ;;
4707     *)
4708         die "Unknown OS '$target_os'."
4709         ;;
4710 esac
4711
4712 # test if creating links works
4713 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4714 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4715 mkdir "$link_dest"
4716 $ln_s "$link_dest" "$link_name"
4717 touch "$link_dest/test_file"
4718 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4719     # create link to source path
4720     [ -e src ] && rm src
4721     $ln_s "$source_path" src
4722     source_link=src
4723 else
4724     # creating directory links doesn't work
4725     # fall back to using the full source path
4726     source_link="$source_path"
4727 fi
4728 # cleanup
4729 rm -r "$link_dest"
4730 rm -r "$link_name"
4731
4732 # determine libc flavour
4733
4734 probe_libc(){
4735     pfx=$1
4736     pfx_no_=${pfx%_}
4737     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4738     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4739         eval ${pfx}libc_type=uclibc
4740         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4741     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4742         eval ${pfx}libc_type=glibc
4743         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4744     # MinGW headers can be installed on Cygwin, so check for newlib first.
4745     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4746         eval ${pfx}libc_type=newlib
4747         add_${pfx}cppflags -U__STRICT_ANSI__
4748     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4749     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4750         eval ${pfx}libc_type=mingw64
4751         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4752             add_compat msvcrt/snprintf.o
4753             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4754         fi
4755         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4756         eval test \$${pfx_no_}cc_type = "gcc" &&
4757             add_${pfx}cppflags -D__printf__=__gnu_printf__
4758     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4759          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4760         eval ${pfx}libc_type=mingw32
4761         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4762             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4763             die "ERROR: MinGW32 runtime version must be >= 3.15."
4764         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4765         eval test \$${pfx_no_}cc_type = "gcc" &&
4766             add_${pfx}cppflags -D__printf__=__gnu_printf__
4767     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4768         eval ${pfx}libc_type=msvcrt
4769         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4770             if [ "$pfx" = host_ ]; then
4771                 add_host_cppflags -Dsnprintf=_snprintf
4772             else
4773                 add_compat strtod.o strtod=avpriv_strtod
4774                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4775                                              _snprintf=avpriv_snprintf  \
4776                                              vsnprintf=avpriv_vsnprintf
4777             fi
4778         fi
4779         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4780         # 0x601 by default unless something else is set by the user.
4781         # This can easily lead to us detecting functions only present
4782         # in such new versions and producing binaries requiring windows 7.0.
4783         # Therefore explicitly set the default to XP unless the user has
4784         # set something else on the command line.
4785         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4786         # family. For these cases, configure is free to use any functions
4787         # found in the SDK headers by default. (Alternatively, we could force
4788         # _WIN32_WINNT to 0x0602 in that case.)
4789         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4790             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4791 #ifdef WINAPI_FAMILY
4792 #include <winapifamily.h>
4793 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4794 #error not desktop
4795 #endif
4796 #endif
4797 EOF
4798     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4799         eval ${pfx}libc_type=klibc
4800     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4801         eval ${pfx}libc_type=bionic
4802     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4803         eval ${pfx}libc_type=solaris
4804         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4805     fi
4806     check_${pfx}cc <<EOF
4807 #include <time.h>
4808 void *v = localtime_r;
4809 EOF
4810 test "$?" != 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
4811 #include <time.h>
4812 void *v = localtime_r;
4813 EOF
4814
4815 }
4816
4817 probe_libc
4818 test -n "$libc_type" && enable libc_$libc_type
4819 probe_libc host_
4820 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4821
4822 case $libc_type in
4823     bionic)
4824         add_compat strtod.o strtod=avpriv_strtod
4825         ;;
4826 esac
4827
4828 # hacks for compiler/libc/os combinations
4829
4830 if enabled_all tms470 libc_glibc; then
4831     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4832     add_cppflags -D__USER_LABEL_PREFIX__=
4833     add_cppflags -D__builtin_memset=memset
4834     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4835     add_cflags   -pds=48    # incompatible redefinition of macro
4836 fi
4837
4838 if enabled_all ccc libc_glibc; then
4839     add_ldflags -Wl,-z,now  # calls to libots crash without this
4840 fi
4841
4842 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4843     add_cppflags '-I\$(SRC_PATH)/compat/float'
4844
4845 esc(){
4846     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4847 }
4848
4849 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4850
4851 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4852
4853 set_default libdir
4854 : ${shlibdir_default:="$libdir"}
4855 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4856
4857 set_default $PATHS_LIST
4858 set_default nm
4859
4860 # we need to build at least one lib type
4861 if ! enabled_any static shared; then
4862     cat <<EOF
4863 At least one library type must be built.
4864 Specify --enable-static to build the static libraries or --enable-shared to
4865 build the shared libraries as well. To only build the shared libraries specify
4866 --disable-static in addition to --enable-shared.
4867 EOF
4868     exit 1;
4869 fi
4870