Merge commit '96c373c7704aeb1cc1d2c275fbb5d71777665589'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
91   --enable-rpath           use rpath to allow installing libraries in paths
92                            not part of the dynamic linker search path
93                            use rpath when linking programs [USE WITH CARE]
94
95 Licensing options:
96   --enable-gpl             allow use of GPL code, the resulting libs
97                            and binaries will be under GPL [no]
98   --enable-version3        upgrade (L)GPL to version 3 [no]
99   --enable-nonfree         allow use of nonfree code, the resulting libs
100                            and binaries will be unredistributable [no]
101
102 Configuration options:
103   --disable-static         do not build static libraries [no]
104   --enable-shared          build shared libraries [no]
105   --enable-small           optimize for size instead of speed
106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
107   --enable-gray            enable full grayscale support (slower color)
108   --disable-swscale-alpha  disable alpha channel support in swscale
109   --disable-all            disable building components, libraries and programs
110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
111   --enable-raise-major     increase major version numbers in sonames [no]
112
113 Program options:
114   --disable-programs       do not build command line programs
115   --disable-ffmpeg         disable ffmpeg build
116   --disable-ffplay         disable ffplay build
117   --disable-ffprobe        disable ffprobe build
118   --disable-ffserver       disable ffserver build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Hardware accelerators:
152   --disable-d3d11va        disable D3D11VA code [autodetect]
153   --disable-dxva2          disable DXVA2 code [autodetect]
154   --disable-vaapi          disable VAAPI code [autodetect]
155   --disable-vda            disable VDA code [autodetect]
156   --disable-vdpau          disable VDPAU code [autodetect]
157   --enable-videotoolbox    enable VideoToolbox code [autodetect]
158
159 Individual component options:
160   --disable-everything     disable all components listed below
161   --disable-encoder=NAME   disable encoder NAME
162   --enable-encoder=NAME    enable encoder NAME
163   --disable-encoders       disable all encoders
164   --disable-decoder=NAME   disable decoder NAME
165   --enable-decoder=NAME    enable decoder NAME
166   --disable-decoders       disable all decoders
167   --disable-hwaccel=NAME   disable hwaccel NAME
168   --enable-hwaccel=NAME    enable hwaccel NAME
169   --disable-hwaccels       disable all hwaccels
170   --disable-muxer=NAME     disable muxer NAME
171   --enable-muxer=NAME      enable muxer NAME
172   --disable-muxers         disable all muxers
173   --disable-demuxer=NAME   disable demuxer NAME
174   --enable-demuxer=NAME    enable demuxer NAME
175   --disable-demuxers       disable all demuxers
176   --enable-parser=NAME     enable parser NAME
177   --disable-parser=NAME    disable parser NAME
178   --disable-parsers        disable all parsers
179   --enable-bsf=NAME        enable bitstream filter NAME
180   --disable-bsf=NAME       disable bitstream filter NAME
181   --disable-bsfs           disable all bitstream filters
182   --enable-protocol=NAME   enable protocol NAME
183   --disable-protocol=NAME  disable protocol NAME
184   --disable-protocols      disable all protocols
185   --enable-indev=NAME      enable input device NAME
186   --disable-indev=NAME     disable input device NAME
187   --disable-indevs         disable input devices
188   --enable-outdev=NAME     enable output device NAME
189   --disable-outdev=NAME    disable output device NAME
190   --disable-outdevs        disable output devices
191   --disable-devices        disable all devices
192   --enable-filter=NAME     enable filter NAME
193   --disable-filter=NAME    disable filter NAME
194   --disable-filters        disable all filters
195
196 External library support:
197   --enable-avisynth        enable reading of AviSynth script files [no]
198   --disable-bzlib          disable bzlib [autodetect]
199   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
200   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
201   --enable-frei0r          enable frei0r video filtering [no]
202   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
203                            if openssl, librtmp or gmp is not used [no]
204   --enable-gmp             enable gmp, needed for rtmp(t)e support
205                            if openssl or librtmp is not used [no]
206   --enable-gnutls          enable gnutls, needed for https support
207                            if openssl is not used [no]
208   --disable-iconv          disable iconv [autodetect]
209   --enable-ladspa          enable LADSPA audio filtering [no]
210   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
211   --enable-libass          enable libass subtitles rendering,
212                            needed for subtitles and ass filter [no]
213   --enable-libbluray       enable BluRay reading using libbluray [no]
214   --enable-libbs2b         enable bs2b DSP library [no]
215   --enable-libcaca         enable textual display using libcaca [no]
216   --enable-libcelt         enable CELT decoding via libcelt [no]
217   --enable-libcdio         enable audio CD grabbing with libcdio [no]
218   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
219                            and libraw1394 [no]
220   --enable-libdcadec       enable DCA decoding via libdcadec [no]
221   --enable-libfaac         enable AAC encoding via libfaac [no]
222   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
223   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
224   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
225   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
226   --enable-libgme          enable Game Music Emu via libgme [no]
227   --enable-libgsm          enable GSM de/encoding via libgsm [no]
228   --enable-libiec61883     enable iec61883 via libiec61883 [no]
229   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
230   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
231   --enable-libmfx          enable HW acceleration through libmfx
232   --enable-libmodplug      enable ModPlug via libmodplug [no]
233   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
234   --enable-libnut          enable NUT (de)muxing via libnut,
235                            native (de)muxer exists [no]
236   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
237   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
238   --enable-libopencv       enable video filtering via libopencv [no]
239   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
240   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
241   --enable-libopus         enable Opus de/encoding via libopus [no]
242   --enable-libpulse        enable Pulseaudio input via libpulse [no]
243   --enable-librubberband   enable rubberband needed for rubberband filter [no]
244   --enable-librtmp         enable RTMP[E] support via librtmp [no]
245   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
246   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
247   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
248   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
249   --enable-libsoxr         enable Include libsoxr resampling [no]
250   --enable-libspeex        enable Speex de/encoding via libspeex [no]
251   --enable-libssh          enable SFTP protocol via libssh [no]
252   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
253   --enable-libtheora       enable Theora encoding via libtheora [no]
254   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
255   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
256   --enable-libv4l2         enable libv4l2/v4l-utils [no]
257   --enable-libvidstab      enable video stabilization using vid.stab [no]
258   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
259   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
260   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
261                            native implementation exists [no]
262   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
263   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
264   --enable-libwebp         enable WebP encoding via libwebp [no]
265   --enable-libx264         enable H.264 encoding via x264 [no]
266   --enable-libx265         enable HEVC encoding via x265 [no]
267   --enable-libxavs         enable AVS encoding via xavs [no]
268   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
269   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
270   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
271   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
272   --enable-libxvid         enable Xvid encoding via xvidcore,
273                            native MPEG-4/Xvid encoder exists [no]
274   --enable-libzimg         enable z.lib, needed for zscale filter [no]
275   --enable-libzmq          enable message passing via libzmq [no]
276   --enable-libzvbi         enable teletext support via libzvbi [no]
277   --disable-lzma           disable lzma [autodetect]
278   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
279   --enable-mmal            enable decoding via MMAL [no]
280   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
281   --enable-nvenc           enable NVIDIA NVENC support [no]
282   --enable-openal          enable OpenAL 1.1 capture support [no]
283   --enable-opencl          enable OpenCL code
284   --enable-opengl          enable OpenGL rendering [no]
285   --enable-openssl         enable openssl, needed for https support
286                            if gnutls is not used [no]
287   --disable-schannel       disable SChannel SSP, needed for TLS support on
288                            Windows if openssl and gnutls are not used [autodetect]
289   --disable-sdl            disable sdl [autodetect]
290   --disable-securetransport disable Secure Transport, needed for TLS support
291                            on OSX if openssl and gnutls are not used [autodetect]
292   --enable-x11grab         enable X11 grabbing (legacy) [no]
293   --disable-xlib           disable xlib [autodetect]
294   --disable-zlib           disable zlib [autodetect]
295
296 Toolchain options:
297   --arch=ARCH              select architecture [$arch]
298   --cpu=CPU                select the minimum required CPU (affects
299                            instruction selection, may crash on older CPUs)
300   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
301   --progs-suffix=SUFFIX    program name suffix []
302   --enable-cross-compile   assume a cross-compiler is used
303   --sysroot=PATH           root of cross-build tree
304   --sysinclude=PATH        location of cross-build system headers
305   --target-os=OS           compiler targets OS [$target_os]
306   --target-exec=CMD        command to run executables on target
307   --target-path=DIR        path to view of build directory on target
308   --target-samples=DIR     path to samples directory on target
309   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
310   --toolchain=NAME         set tool defaults according to NAME
311   --nm=NM                  use nm tool NM [$nm_default]
312   --ar=AR                  use archive tool AR [$ar_default]
313   --as=AS                  use assembler AS [$as_default]
314   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
315   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
316   --cc=CC                  use C compiler CC [$cc_default]
317   --cxx=CXX                use C compiler CXX [$cxx_default]
318   --objcc=OCC              use ObjC compiler OCC [$cc_default]
319   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
320   --ld=LD                  use linker LD [$ld_default]
321   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
322   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
323   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
324   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
325   --host-cc=HOSTCC         use host C compiler HOSTCC
326   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
327   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
328   --host-ld=HOSTLD         use host linker HOSTLD
329   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
330   --host-libs=HLIBS        use libs HLIBS when linking for host
331   --host-os=OS             compiler host OS [$target_os]
332   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
333   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
334   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
335   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
336   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
337   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
338   --extra-libs=ELIBS       add ELIBS [$ELIBS]
339   --extra-version=STRING   version string suffix []
340   --optflags=OPTFLAGS      override optimization-related compiler flags
341   --build-suffix=SUFFIX    library name suffix []
342   --enable-pic             build position-independent code
343   --enable-thumb           compile for Thumb instruction set
344   --enable-lto             use link-time optimization
345   --env="ENV=override"     override the environment variables
346
347 Advanced options (experts only):
348   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
349   --custom-allocator=NAME  use a supported custom allocator
350   --disable-symver         disable symbol versioning
351   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
352   --disable-safe-bitstream-reader
353                            disable buffer boundary checking in bitreaders
354                            (faster, but may crash)
355   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
356   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
357
358 Optimization options (experts only):
359   --disable-asm            disable all assembly optimizations
360   --disable-altivec        disable AltiVec optimizations
361   --disable-vsx            disable VSX optimizations
362   --disable-power8         disable POWER8 optimizations
363   --disable-amd3dnow       disable 3DNow! optimizations
364   --disable-amd3dnowext    disable 3DNow! extended optimizations
365   --disable-mmx            disable MMX optimizations
366   --disable-mmxext         disable MMXEXT optimizations
367   --disable-sse            disable SSE optimizations
368   --disable-sse2           disable SSE2 optimizations
369   --disable-sse3           disable SSE3 optimizations
370   --disable-ssse3          disable SSSE3 optimizations
371   --disable-sse4           disable SSE4 optimizations
372   --disable-sse42          disable SSE4.2 optimizations
373   --disable-avx            disable AVX optimizations
374   --disable-xop            disable XOP optimizations
375   --disable-fma3           disable FMA3 optimizations
376   --disable-fma4           disable FMA4 optimizations
377   --disable-avx2           disable AVX2 optimizations
378   --disable-aesni          disable AESNI optimizations
379   --disable-armv5te        disable armv5te optimizations
380   --disable-armv6          disable armv6 optimizations
381   --disable-armv6t2        disable armv6t2 optimizations
382   --disable-vfp            disable VFP optimizations
383   --disable-neon           disable NEON optimizations
384   --disable-inline-asm     disable use of inline assembly
385   --disable-yasm           disable use of nasm/yasm assembly
386   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
387   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
388   --disable-msa            disable MSA optimizations
389   --disable-mipsfpu        disable floating point MIPS optimizations
390   --disable-mmi            disable Loongson SIMD optimizations
391   --disable-fast-unaligned consider unaligned accesses slow
392
393 Developer options (useful when working on FFmpeg itself):
394   --disable-debug          disable debugging symbols
395   --enable-debug=LEVEL     set the debug level [$debuglevel]
396   --disable-optimizations  disable compiler optimizations
397   --enable-extra-warnings  enable more compiler warnings
398   --disable-stripping      disable stripping of executables and shared libraries
399   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
400                            2 causes a slowdown at runtime.
401   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
402   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
403                            leaks and errors, using the specified valgrind binary.
404                            Cannot be combined with --target-exec
405   --enable-ftrapv          Trap arithmetic overflows
406   --samples=PATH           location of test samples for FATE, if not set use
407                            \$FATE_SAMPLES at make invocation time.
408   --enable-neon-clobber-test check NEON registers for clobbering (should be
409                            used only for debugging purposes)
410   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
411                            should be used only for debugging purposes)
412   --enable-random          randomly enable/disable components
413   --disable-random
414   --enable-random=LIST     randomly enable/disable specific components or
415   --disable-random=LIST    component groups. LIST is a comma-separated list
416                            of NAME[:PROB] entries where NAME is a component
417                            (group) and PROB the probability associated with
418                            NAME (default 0.5).
419   --random-seed=VALUE      seed value for --enable/disable-random
420   --disable-valgrind-backtrace do not print a backtrace under Valgrind
421                            (only applies to --disable-optimizations builds)
422
423 NOTE: Object files are built at the place where configure is launched.
424 EOF
425   exit 0
426 }
427
428 quotes='""'
429 if test -t 1 && which tput >/dev/null 2>&1; then
430     ncolors=$(tput colors)
431     if test -n "$ncolors" && test $ncolors -ge 8; then
432         bold_color=$(tput bold)
433         warn_color=$(tput setaf 3)
434         error_color=$(tput setaf 1)
435         reset_color=$(tput sgr0)
436     fi
437     # 72 used instead of 80 since that's the default of pr
438     ncols=$(tput cols)
439 fi
440 : ${ncols:=72}
441
442 log(){
443     echo "$@" >> $logfile
444 }
445
446 log_file(){
447     log BEGIN $1
448     pr -n -t $1 >> $logfile
449     log END $1
450 }
451
452 warn(){
453     log "WARNING: $*"
454     WARNINGS="${WARNINGS}WARNING: $*\n"
455 }
456
457 die(){
458     log "$@"
459     echo "$error_color$bold_color$@$reset_color"
460     cat <<EOF
461
462 If you think configure made a mistake, make sure you are using the latest
463 version from Git.  If the latest version fails, report the problem to the
464 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
465 EOF
466     if disabled logging; then
467         cat <<EOF
468 Rerun configure with logging enabled (do not use --disable-logging), and
469 include the log this produces with your report.
470 EOF
471     else
472         cat <<EOF
473 Include the log file "$logfile" produced by configure as this will help
474 solve the problem.
475 EOF
476     fi
477     exit 1
478 }
479
480 # Avoid locale weirdness, besides we really just want to translate ASCII.
481 toupper(){
482     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
483 }
484
485 tolower(){
486     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
487 }
488
489 c_escape(){
490     echo "$*" | sed 's/["\\]/\\\0/g'
491 }
492
493 sh_quote(){
494     v=$(echo "$1" | sed "s/'/'\\\\''/g")
495     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
496     echo "$v"
497 }
498
499 cleanws(){
500     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
501 }
502
503 filter(){
504     pat=$1
505     shift
506     for v; do
507         eval "case $v in $pat) echo $v ;; esac"
508     done
509 }
510
511 filter_out(){
512     pat=$1
513     shift
514     for v; do
515         eval "case $v in $pat) ;; *) echo $v ;; esac"
516     done
517 }
518
519 map(){
520     m=$1
521     shift
522     for v; do eval $m; done
523 }
524
525 add_suffix(){
526     suffix=$1
527     shift
528     for v; do echo ${v}${suffix}; done
529 }
530
531 set_all(){
532     value=$1
533     shift
534     for var in $*; do
535         eval $var=$value
536     done
537 }
538
539 set_weak(){
540     value=$1
541     shift
542     for var; do
543         eval : \${$var:=$value}
544     done
545 }
546
547 sanitize_var_name(){
548     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
549 }
550
551 set_safe(){
552     var=$1
553     shift
554     eval $(sanitize_var_name "$var")='$*'
555 }
556
557 get_safe(){
558     eval echo \$$(sanitize_var_name "$1")
559 }
560
561 pushvar(){
562     for pvar in $*; do
563         eval level=\${${pvar}_level:=0}
564         eval ${pvar}_${level}="\$$pvar"
565         eval ${pvar}_level=$(($level+1))
566     done
567 }
568
569 popvar(){
570     for pvar in $*; do
571         eval level=\${${pvar}_level:-0}
572         test $level = 0 && continue
573         eval level=$(($level-1))
574         eval $pvar="\${${pvar}_${level}}"
575         eval ${pvar}_level=$level
576         eval unset ${pvar}_${level}
577     done
578 }
579
580 enable(){
581     set_all yes $*
582 }
583
584 disable(){
585     set_all no $*
586 }
587
588 enable_weak(){
589     set_weak yes $*
590 }
591
592 disable_weak(){
593     set_weak no $*
594 }
595
596 enable_safe(){
597     for var; do
598         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
599     done
600 }
601
602 disable_safe(){
603     for var; do
604         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
605     done
606 }
607
608 do_enable_deep(){
609     for var; do
610         enabled $var && continue
611         eval sel="\$${var}_select"
612         eval sgs="\$${var}_suggest"
613         pushvar var sgs
614         enable_deep $sel
615         popvar sgs
616         enable_deep_weak $sgs
617         popvar var
618     done
619 }
620
621 enable_deep(){
622     do_enable_deep $*
623     enable $*
624 }
625
626 enable_deep_weak(){
627     for var; do
628         disabled $var && continue
629         pushvar var
630         do_enable_deep $var
631         popvar var
632         enable_weak $var
633     done
634 }
635
636 enabled(){
637     test "${1#!}" = "$1" && op='=' || op=!=
638     eval test "x\$${1#!}" $op "xyes"
639 }
640
641 disabled(){
642     test "${1#!}" = "$1" && op='=' || op=!=
643     eval test "x\$${1#!}" $op "xno"
644 }
645
646 enabled_all(){
647     for opt; do
648         enabled $opt || return 1
649     done
650 }
651
652 disabled_all(){
653     for opt; do
654         disabled $opt || return 1
655     done
656 }
657
658 enabled_any(){
659     for opt; do
660         enabled $opt && return 0
661     done
662 }
663
664 disabled_any(){
665     for opt; do
666         disabled $opt && return 0
667     done
668     return 1
669 }
670
671 set_default(){
672     for opt; do
673         eval : \${$opt:=\$${opt}_default}
674     done
675 }
676
677 is_in(){
678     value=$1
679     shift
680     for var in $*; do
681         [ $var = $value ] && return 0
682     done
683     return 1
684 }
685
686 do_check_deps(){
687     for cfg; do
688         cfg="${cfg#!}"
689         enabled ${cfg}_checking && die "Circular dependency for $cfg."
690         disabled ${cfg}_checking && continue
691         enable ${cfg}_checking
692         append allopts $cfg
693
694         eval dep_all="\$${cfg}_deps"
695         eval dep_any="\$${cfg}_deps_any"
696         eval dep_sel="\$${cfg}_select"
697         eval dep_sgs="\$${cfg}_suggest"
698         eval dep_ifa="\$${cfg}_if"
699         eval dep_ifn="\$${cfg}_if_any"
700
701         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
702         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
703         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
704
705         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
706         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
707         enabled_all  $dep_all || disable $cfg
708         enabled_any  $dep_any || disable $cfg
709         disabled_any $dep_sel && disable $cfg
710
711         if enabled $cfg; then
712             enable_deep $dep_sel
713             enable_deep_weak $dep_sgs
714         fi
715
716         disable ${cfg}_checking
717     done
718 }
719
720 check_deps(){
721     unset allopts
722
723     do_check_deps "$@"
724
725     for cfg in $allopts; do
726         enabled $cfg || continue
727         eval dep_extralibs="\$${cfg}_extralibs"
728         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
729     done
730 }
731
732 print_config(){
733     pfx=$1
734     files=$2
735     shift 2
736     map 'eval echo "$v \${$v:-no}"' "$@" |
737     awk "BEGIN { split(\"$files\", files) }
738         {
739             c = \"$pfx\" toupper(\$1);
740             v = \$2;
741             sub(/yes/, 1, v);
742             sub(/no/,  0, v);
743             for (f in files) {
744                 file = files[f];
745                 if (file ~ /\\.h\$/) {
746                     printf(\"#define %s %d\\n\", c, v) >>file;
747                 } else if (file ~ /\\.asm\$/) {
748                     printf(\"%%define %s %d\\n\", c, v) >>file;
749                 } else if (file ~ /\\.mak\$/) {
750                     n = -v ? \"\" : \"!\";
751                     printf(\"%s%s=yes\\n\", n, c) >>file;
752                 } else if (file ~ /\\.texi\$/) {
753                     pre = -v ? \"\" : \"@c \";
754                     yesno = \$2;
755                     c2 = tolower(c);
756                     gsub(/_/, \"-\", c2);
757                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
758                 }
759             }
760         }"
761 }
762
763 print_enabled(){
764     suf=$1
765     shift
766     for v; do
767         enabled $v && printf "%s\n" ${v%$suf};
768     done
769 }
770
771 append(){
772     var=$1
773     shift
774     eval "$var=\"\$$var $*\""
775 }
776
777 prepend(){
778     var=$1
779     shift
780     eval "$var=\"$* \$$var\""
781 }
782
783 unique(){
784     var=$1
785     uniq_list=""
786     for tok in $(eval echo \$$var); do
787         uniq_list="$(filter_out $tok $uniq_list) $tok"
788     done
789     eval "$var=\"${uniq_list}\""
790 }
791
792 add_cppflags(){
793     append CPPFLAGS "$@"
794 }
795
796 add_cflags(){
797     append CFLAGS $($cflags_filter "$@")
798 }
799
800 add_cxxflags(){
801     append CXXFLAGS $($cflags_filter "$@")
802 }
803
804 add_asflags(){
805     append ASFLAGS $($asflags_filter "$@")
806 }
807
808 add_objcflags(){
809     append OBJCFLAGS $($objcflags_filter "$@")
810 }
811
812 add_ldflags(){
813     append LDFLAGS $($ldflags_filter "$@")
814 }
815
816 add_ldexeflags(){
817     append LDEXEFLAGS $($ldflags_filter "$@")
818 }
819
820 add_ldlibflags(){
821     append LDLIBFLAGS $($ldflags_filter "$@")
822 }
823
824 add_stripflags(){
825     append ASMSTRIPFLAGS "$@"
826 }
827
828 add_extralibs(){
829     prepend extralibs $($ldflags_filter "$@")
830 }
831
832 add_host_cppflags(){
833     append host_cppflags "$@"
834 }
835
836 add_host_cflags(){
837     append host_cflags $($host_cflags_filter "$@")
838 }
839
840 add_host_ldflags(){
841     append host_ldflags $($host_ldflags_filter "$@")
842 }
843
844 add_compat(){
845     append compat_objs $1
846     shift
847     map 'add_cppflags -D$v' "$@"
848 }
849
850 check_cmd(){
851     log "$@"
852     "$@" >> $logfile 2>&1
853 }
854
855 check_stat(){
856     log check_stat "$@"
857     stat "$1" >> $logfile 2>&1
858 }
859
860 cc_o(){
861     eval printf '%s\\n' $CC_O
862 }
863
864 cc_e(){
865     eval printf '%s\\n' $CC_E
866 }
867
868 check_cc(){
869     log check_cc "$@"
870     cat > $TMPC
871     log_file $TMPC
872     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
873 }
874
875 check_cxx(){
876     log check_cxx "$@"
877     cat > $TMPCPP
878     log_file $TMPCPP
879     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
880 }
881
882 check_objcc(){
883     log check_objcc "$@"
884     cat > $TMPM
885     log_file $TMPM
886     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
887 }
888
889 check_cpp(){
890     log check_cpp "$@"
891     cat > $TMPC
892     log_file $TMPC
893     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
894 }
895
896 as_o(){
897     eval printf '%s\\n' $AS_O
898 }
899
900 check_as(){
901     log check_as "$@"
902     cat > $TMPS
903     log_file $TMPS
904     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
905 }
906
907 check_inline_asm(){
908     log check_inline_asm "$@"
909     name="$1"
910     code="$2"
911     shift 2
912     disable $name
913     check_cc "$@" <<EOF && enable $name
914 void foo(void){ __asm__ volatile($code); }
915 EOF
916 }
917
918 check_insn(){
919     log check_insn "$@"
920     check_inline_asm ${1}_inline "\"$2\""
921     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
922 }
923
924 check_yasm(){
925     log check_yasm "$@"
926     echo "$1" > $TMPS
927     log_file $TMPS
928     shift 1
929     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
930 }
931
932 ld_o(){
933     eval printf '%s\\n' $LD_O
934 }
935
936 check_ld(){
937     log check_ld "$@"
938     type=$1
939     shift 1
940     flags=$(filter_out '-l*|*.so' $@)
941     libs=$(filter '-l*|*.so' $@)
942     check_$type $($cflags_filter $flags) || return
943     flags=$($ldflags_filter $flags)
944     libs=$($ldflags_filter $libs)
945     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
946 }
947
948 print_include(){
949     hdr=$1
950     test "${hdr%.h}" = "${hdr}" &&
951         echo "#include $hdr"    ||
952         echo "#include <$hdr>"
953 }
954
955 check_code(){
956     log check_code "$@"
957     check=$1
958     headers=$2
959     code=$3
960     shift 3
961     {
962         for hdr in $headers; do
963             print_include $hdr
964         done
965         echo "int main(void) { $code; return 0; }"
966     } | check_$check "$@"
967 }
968
969 check_cppflags(){
970     log check_cppflags "$@"
971     check_cc "$@" <<EOF && append CPPFLAGS "$@"
972 int x;
973 EOF
974 }
975
976 test_cflags(){
977     log test_cflags "$@"
978     set -- $($cflags_filter "$@")
979     check_cc "$@" <<EOF
980 int x;
981 EOF
982 }
983
984 check_cflags(){
985     log check_cflags "$@"
986     test_cflags "$@" && add_cflags "$@"
987 }
988
989 check_cxxflags(){
990     log check_cxxflags "$@"
991     set -- $($cflags_filter "$@")
992     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
993 int x;
994 EOF
995 }
996
997 test_objcflags(){
998     log test_cflags "$@"
999     set -- $($cflags_filter "$@")
1000     check_objcc "$@" <<EOF
1001 int x;
1002 EOF
1003 }
1004
1005 check_objcflags(){
1006     log check_cflags "$@"
1007     test_objcflags "$@" && add_objcflags "$@"
1008 }
1009
1010 test_ldflags(){
1011     log test_ldflags "$@"
1012     check_ld "cc" "$@" <<EOF
1013 int main(void){ return 0; }
1014 EOF
1015 }
1016
1017 check_ldflags(){
1018     log check_ldflags "$@"
1019     test_ldflags "$@" && add_ldflags "$@"
1020 }
1021
1022 test_stripflags(){
1023     log test_stripflags "$@"
1024     # call check_cc to get a fresh TMPO
1025     check_cc <<EOF
1026 int main(void) { return 0; }
1027 EOF
1028     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1029 }
1030
1031 check_stripflags(){
1032     log check_stripflags "$@"
1033     test_stripflags "$@" && add_stripflags "$@"
1034 }
1035
1036 check_header(){
1037     log check_header "$@"
1038     header=$1
1039     shift
1040     disable_safe $header
1041     check_cpp "$@" <<EOF && enable_safe $header
1042 #include <$header>
1043 int x;
1044 EOF
1045 }
1046
1047 check_header_objcc(){
1048     log check_header_objcc "$@"
1049     rm -f -- "$TMPO"
1050     header=$1
1051     shift
1052     disable_safe $header
1053     {
1054        echo "#include <$header>"
1055        echo "int main(void) { return 0; }"
1056     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1057 }
1058
1059 check_func(){
1060     log check_func "$@"
1061     func=$1
1062     shift
1063     disable $func
1064     check_ld "cc" "$@" <<EOF && enable $func
1065 extern int $func();
1066 int main(void){ $func(); }
1067 EOF
1068 }
1069
1070 check_complexfunc(){
1071     log check_complexfunc "$@"
1072     func=$1
1073     narg=$2
1074     shift 2
1075     test $narg = 2 && args="f, g" || args="f * I"
1076     disable $func
1077     check_ld "cc" "$@" <<EOF && enable $func
1078 #include <complex.h>
1079 #include <math.h>
1080 float foo(complex float f, complex float g) { return $func($args); }
1081 int main(void){ return (int) foo; }
1082 EOF
1083 }
1084
1085 check_mathfunc(){
1086     log check_mathfunc "$@"
1087     func=$1
1088     narg=$2
1089     shift 2
1090     test $narg = 2 && args="f, g" || args="f"
1091     disable $func
1092     check_ld "cc" "$@" <<EOF && enable $func
1093 #include <math.h>
1094 float foo(float f, float g) { return $func($args); }
1095 int main(void){ return (int) foo; }
1096 EOF
1097 }
1098
1099 check_func_headers(){
1100     log check_func_headers "$@"
1101     headers=$1
1102     funcs=$2
1103     shift 2
1104     {
1105         for hdr in $headers; do
1106             print_include $hdr
1107         done
1108         for func in $funcs; do
1109             echo "long check_$func(void) { return (long) $func; }"
1110         done
1111         echo "int main(void) { return 0; }"
1112     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1113 }
1114
1115 check_class_headers_cpp(){
1116     log check_class_headers_cpp "$@"
1117     headers=$1
1118     classes=$2
1119     shift 2
1120     {
1121         for hdr in $headers; do
1122             echo "#include <$hdr>"
1123         done
1124         echo "int main(void) { "
1125         i=1
1126         for class in $classes; do
1127             echo "$class obj$i;"
1128             i=$(expr $i + 1)
1129         done
1130         echo "return 0; }"
1131     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1132 }
1133
1134 check_cpp_condition(){
1135     log check_cpp_condition "$@"
1136     header=$1
1137     condition=$2
1138     shift 2
1139     check_cpp "$@" <<EOF
1140 #include <$header>
1141 #if !($condition)
1142 #error "unsatisfied condition: $condition"
1143 #endif
1144 EOF
1145 }
1146
1147 check_lib(){
1148     log check_lib "$@"
1149     header="$1"
1150     func="$2"
1151     shift 2
1152     check_header $header && check_func $func "$@" && add_extralibs "$@"
1153 }
1154
1155 check_lib2(){
1156     log check_lib2 "$@"
1157     headers="$1"
1158     funcs="$2"
1159     shift 2
1160     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1161 }
1162
1163 check_lib_cpp(){
1164     log check_lib_cpp "$@"
1165     headers="$1"
1166     classes="$2"
1167     shift 2
1168     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1169 }
1170
1171 check_pkg_config(){
1172     log check_pkg_config "$@"
1173     pkgandversion="$1"
1174     pkg="${1%% *}"
1175     headers="$2"
1176     funcs="$3"
1177     shift 3
1178     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1179     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1180     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1181     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1182         set_safe "${pkg}_cflags" $pkg_cflags   &&
1183         set_safe "${pkg}_libs"   $pkg_libs
1184 }
1185
1186 check_exec(){
1187     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1188 }
1189
1190 check_exec_crash(){
1191     code=$(cat)
1192
1193     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1194     # are safe but may not be available everywhere.  Thus we use
1195     # raise(SIGTERM) instead.  The check is run in a subshell so we
1196     # can redirect the "Terminated" message from the shell.  SIGBUS
1197     # is not defined by standard C so it is used conditionally.
1198
1199     (check_exec "$@") >> $logfile 2>&1 <<EOF
1200 #include <signal.h>
1201 static void sighandler(int sig){
1202     raise(SIGTERM);
1203 }
1204 int foo(void){
1205     $code
1206 }
1207 int (*func_ptr)(void) = foo;
1208 int main(void){
1209     signal(SIGILL, sighandler);
1210     signal(SIGFPE, sighandler);
1211     signal(SIGSEGV, sighandler);
1212 #ifdef SIGBUS
1213     signal(SIGBUS, sighandler);
1214 #endif
1215     return func_ptr();
1216 }
1217 EOF
1218 }
1219
1220 check_type(){
1221     log check_type "$@"
1222     headers=$1
1223     type=$2
1224     shift 2
1225     disable_safe "$type"
1226     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1227 }
1228
1229 check_struct(){
1230     log check_struct "$@"
1231     headers=$1
1232     struct=$2
1233     member=$3
1234     shift 3
1235     disable_safe "${struct}_${member}"
1236     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1237         enable_safe "${struct}_${member}"
1238 }
1239
1240 check_builtin(){
1241     log check_builtin "$@"
1242     name=$1
1243     headers=$2
1244     builtin=$3
1245     shift 3
1246     disable "$name"
1247     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1248 }
1249
1250 check_compile_assert(){
1251     log check_compile_assert "$@"
1252     name=$1
1253     headers=$2
1254     condition=$3
1255     shift 3
1256     disable "$name"
1257     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1258 }
1259
1260 require(){
1261     name="$1"
1262     header="$2"
1263     func="$3"
1264     shift 3
1265     check_lib $header $func "$@" || die "ERROR: $name not found"
1266 }
1267
1268 require2(){
1269     name="$1"
1270     headers="$2"
1271     func="$3"
1272     shift 3
1273     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1274 }
1275
1276 require_cpp(){
1277     name="$1"
1278     headers="$2"
1279     classes="$3"
1280     shift 3
1281     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1282 }
1283
1284 use_pkg_config(){
1285     pkg="$1"
1286     check_pkg_config "$@" || return 1
1287     add_cflags    $(get_safe "${pkg}_cflags")
1288     add_extralibs $(get_safe "${pkg}_libs")
1289 }
1290
1291 require_pkg_config(){
1292     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1293 }
1294
1295 require_libfreetype(){
1296     log require_libfreetype "$@"
1297     pkg="freetype2"
1298     check_cmd $pkg_config --exists --print-errors $pkg \
1299       || die "ERROR: $pkg not found"
1300     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1301     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1302     {
1303         echo "#include <ft2build.h>"
1304         echo "#include FT_FREETYPE_H"
1305         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1306         echo "int main(void) { return 0; }"
1307     } | check_ld "cc" $pkg_cflags $pkg_libs \
1308       && set_safe "${pkg}_cflags" $pkg_cflags \
1309       && set_safe "${pkg}_libs"   $pkg_libs \
1310       || die "ERROR: $pkg not found"
1311     add_cflags    $(get_safe "${pkg}_cflags")
1312     add_extralibs $(get_safe "${pkg}_libs")
1313 }
1314
1315 hostcc_e(){
1316     eval printf '%s\\n' $HOSTCC_E
1317 }
1318
1319 hostcc_o(){
1320     eval printf '%s\\n' $HOSTCC_O
1321 }
1322
1323 check_host_cc(){
1324     log check_host_cc "$@"
1325     cat > $TMPC
1326     log_file $TMPC
1327     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1328 }
1329
1330 check_host_cpp(){
1331     log check_host_cpp "$@"
1332     cat > $TMPC
1333     log_file $TMPC
1334     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1335 }
1336
1337 check_host_cppflags(){
1338     log check_host_cppflags "$@"
1339     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1340 int x;
1341 EOF
1342 }
1343
1344 check_host_cflags(){
1345     log check_host_cflags "$@"
1346     set -- $($host_cflags_filter "$@")
1347     check_host_cc "$@" <<EOF && append host_cflags "$@"
1348 int x;
1349 EOF
1350 }
1351
1352 check_host_cpp_condition(){
1353     log check_host_cpp_condition "$@"
1354     header=$1
1355     condition=$2
1356     shift 2
1357     check_host_cpp "$@" <<EOF
1358 #include <$header>
1359 #if !($condition)
1360 #error "unsatisfied condition: $condition"
1361 #endif
1362 EOF
1363 }
1364
1365 cp_if_changed(){
1366     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1367     mkdir -p "$(dirname $2)"
1368     $cp_f "$1" "$2"
1369 }
1370
1371 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1372 # system-dependent things.
1373
1374 AVCODEC_COMPONENTS="
1375     bsfs
1376     decoders
1377     encoders
1378     hwaccels
1379     parsers
1380 "
1381
1382 AVDEVICE_COMPONENTS="
1383     indevs
1384     outdevs
1385 "
1386 AVFILTER_COMPONENTS="
1387     filters
1388 "
1389 AVFORMAT_COMPONENTS="
1390     demuxers
1391     muxers
1392     protocols
1393 "
1394
1395 AVRESAMPLE_COMPONENTS=""
1396 AVUTIL_COMPONENTS=""
1397
1398 COMPONENT_LIST="
1399     $AVCODEC_COMPONENTS
1400     $AVDEVICE_COMPONENTS
1401     $AVFILTER_COMPONENTS
1402     $AVFORMAT_COMPONENTS
1403     $AVRESAMPLE_COMPONENTS
1404     $AVUTIL_COMPONENTS
1405 "
1406
1407 EXAMPLE_LIST="
1408     avio_reading_example
1409     avio_dir_cmd_example
1410     decoding_encoding_example
1411     demuxing_decoding_example
1412     extract_mvs_example
1413     filter_audio_example
1414     filtering_audio_example
1415     filtering_video_example
1416     metadata_example
1417     muxing_example
1418     qsvdec_example
1419     remuxing_example
1420     resampling_audio_example
1421     scaling_video_example
1422     transcode_aac_example
1423     transcoding_example
1424 "
1425
1426 EXTERNAL_LIBRARY_LIST="
1427     avisynth
1428     bzlib
1429     chromaprint
1430     crystalhd
1431     decklink
1432     frei0r
1433     gcrypt
1434     gmp
1435     gnutls
1436     iconv
1437     ladspa
1438     libaacplus
1439     libass
1440     libbluray
1441     libbs2b
1442     libcaca
1443     libcdio
1444     libcelt
1445     libdc1394
1446     libdcadec
1447     libfaac
1448     libfdk_aac
1449     libflite
1450     libfontconfig
1451     libfreetype
1452     libfribidi
1453     libgme
1454     libgsm
1455     libiec61883
1456     libilbc
1457     libkvazaar
1458     libmfx
1459     libmodplug
1460     libmp3lame
1461     libnut
1462     libopencore_amrnb
1463     libopencore_amrwb
1464     libopencv
1465     libopenh264
1466     libopenjpeg
1467     libopus
1468     libpulse
1469     librtmp
1470     librubberband
1471     libschroedinger
1472     libshine
1473     libsmbclient
1474     libsnappy
1475     libsoxr
1476     libspeex
1477     libssh
1478     libtesseract
1479     libtheora
1480     libtwolame
1481     libutvideo
1482     libv4l2
1483     libvidstab
1484     libvo_aacenc
1485     libvo_amrwbenc
1486     libvorbis
1487     libvpx
1488     libwavpack
1489     libwebp
1490     libx264
1491     libx265
1492     libxavs
1493     libxcb
1494     libxcb_shm
1495     libxcb_shape
1496     libxcb_xfixes
1497     libxvid
1498     libzimg
1499     libzmq
1500     libzvbi
1501     lzma
1502     mmal
1503     netcdf
1504     nvenc
1505     openal
1506     opencl
1507     opengl
1508     openssl
1509     schannel
1510     sdl
1511     securetransport
1512     x11grab
1513     xlib
1514     zlib
1515 "
1516
1517 DOCUMENT_LIST="
1518     doc
1519     htmlpages
1520     manpages
1521     podpages
1522     txtpages
1523 "
1524
1525 FEATURE_LIST="
1526     ftrapv
1527     gray
1528     hardcoded_tables
1529     runtime_cpudetect
1530     safe_bitstream_reader
1531     shared
1532     small
1533     static
1534     swscale_alpha
1535 "
1536
1537 HWACCEL_LIST="
1538     d3d11va
1539     dxva2
1540     vaapi
1541     vda
1542     vdpau
1543     videotoolbox
1544     xvmc
1545 "
1546
1547 LIBRARY_LIST="
1548     avcodec
1549     avdevice
1550     avfilter
1551     avformat
1552     avresample
1553     avutil
1554     postproc
1555     swresample
1556     swscale
1557 "
1558
1559 LICENSE_LIST="
1560     gpl
1561     nonfree
1562     version3
1563 "
1564
1565 PROGRAM_LIST="
1566     ffplay
1567     ffprobe
1568     ffserver
1569     ffmpeg
1570 "
1571
1572 SUBSYSTEM_LIST="
1573     dct
1574     dwt
1575     error_resilience
1576     faan
1577     fast_unaligned
1578     fft
1579     lsp
1580     lzo
1581     mdct
1582     pixelutils
1583     network
1584     rdft
1585 "
1586
1587 CONFIG_LIST="
1588     $COMPONENT_LIST
1589     $DOCUMENT_LIST
1590     $EXAMPLE_LIST
1591     $EXTERNAL_LIBRARY_LIST
1592     $FEATURE_LIST
1593     $HWACCEL_LIST
1594     $LICENSE_LIST
1595     $LIBRARY_LIST
1596     $PROGRAM_LIST
1597     $SUBSYSTEM_LIST
1598     fontconfig
1599     incompatible_libav_abi
1600     memalign_hack
1601     memory_poisoning
1602     neon_clobber_test
1603     pic
1604     pod2man
1605     raise_major
1606     thumb
1607     valgrind_backtrace
1608     xmm_clobber_test
1609 "
1610
1611 THREADS_LIST="
1612     pthreads
1613     os2threads
1614     w32threads
1615 "
1616
1617 ATOMICS_LIST="
1618     atomics_gcc
1619     atomics_suncc
1620     atomics_win32
1621 "
1622
1623 ARCH_LIST="
1624     aarch64
1625     alpha
1626     arm
1627     avr32
1628     avr32_ap
1629     avr32_uc
1630     bfin
1631     ia64
1632     m68k
1633     mips
1634     mips64
1635     parisc
1636     ppc
1637     ppc64
1638     s390
1639     sh4
1640     sparc
1641     sparc64
1642     tilegx
1643     tilepro
1644     tomi
1645     x86
1646     x86_32
1647     x86_64
1648 "
1649
1650 ARCH_EXT_LIST_ARM="
1651     armv5te
1652     armv6
1653     armv6t2
1654     armv8
1655     neon
1656     vfp
1657     vfpv3
1658     setend
1659 "
1660
1661 ARCH_EXT_LIST_MIPS="
1662     mipsfpu
1663     mips32r2
1664     mips64r2
1665     mips32r6
1666     mips64r6
1667     mipsdsp
1668     mipsdspr2
1669     msa
1670 "
1671
1672 ARCH_EXT_LIST_LOONGSON="
1673     loongson2
1674     loongson3
1675     mmi
1676 "
1677
1678 ARCH_EXT_LIST_X86_SIMD="
1679     aesni
1680     amd3dnow
1681     amd3dnowext
1682     avx
1683     avx2
1684     fma3
1685     fma4
1686     mmx
1687     mmxext
1688     sse
1689     sse2
1690     sse3
1691     sse4
1692     sse42
1693     ssse3
1694     xop
1695 "
1696
1697 ARCH_EXT_LIST_PPC="
1698     altivec
1699     dcbzl
1700     ldbrx
1701     power8
1702     ppc4xx
1703     vsx
1704 "
1705
1706 ARCH_EXT_LIST_X86="
1707     $ARCH_EXT_LIST_X86_SIMD
1708     cpunop
1709     i686
1710 "
1711
1712 ARCH_EXT_LIST="
1713     $ARCH_EXT_LIST_ARM
1714     $ARCH_EXT_LIST_PPC
1715     $ARCH_EXT_LIST_X86
1716     $ARCH_EXT_LIST_MIPS
1717     $ARCH_EXT_LIST_LOONGSON
1718 "
1719
1720 ARCH_FEATURES="
1721     aligned_stack
1722     fast_64bit
1723     fast_clz
1724     fast_cmov
1725     local_aligned_8
1726     local_aligned_16
1727     local_aligned_32
1728     simd_align_16
1729 "
1730
1731 BUILTIN_LIST="
1732     atomic_cas_ptr
1733     atomic_compare_exchange
1734     machine_rw_barrier
1735     MemoryBarrier
1736     mm_empty
1737     rdtsc
1738     sarestart
1739     sync_val_compare_and_swap
1740 "
1741 HAVE_LIST_CMDLINE="
1742     inline_asm
1743     symver
1744     yasm
1745 "
1746
1747 HAVE_LIST_PUB="
1748     bigendian
1749     fast_unaligned
1750     incompatible_libav_abi
1751 "
1752
1753 HEADERS_LIST="
1754     alsa_asoundlib_h
1755     altivec_h
1756     arpa_inet_h
1757     asm_types_h
1758     cdio_paranoia_h
1759     cdio_paranoia_paranoia_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     ividsp
2013     jpegtables
2014     lgplv3
2015     libx262
2016     llauddsp
2017     llviddsp
2018     lpc
2019     lzf
2020     me_cmp
2021     mpeg_er
2022     mpegaudio
2023     mpegaudiodsp
2024     mpegvideo
2025     mpegvideoenc
2026     mss34dsp
2027     pixblockdsp
2028     qpeldsp
2029     qsv
2030     qsvdec
2031     qsvenc
2032     rangecoder
2033     riffdec
2034     riffenc
2035     rtpdec
2036     rtpenc_chain
2037     rv34dsp
2038     sinewin
2039     snappy
2040     startcode
2041     texturedsp
2042     texturedspenc
2043     tpeldsp
2044     videodsp
2045     vp3dsp
2046     vp56dsp
2047     vp8dsp
2048     wma_freqs
2049     wmv2dsp
2050 "
2051
2052 CMDLINE_SELECT="
2053     $ARCH_EXT_LIST
2054     $CONFIG_LIST
2055     $HAVE_LIST_CMDLINE
2056     $THREADS_LIST
2057     asm
2058     cross_compile
2059     debug
2060     extra_warnings
2061     logging
2062     lto
2063     optimizations
2064     rpath
2065     stripping
2066 "
2067
2068 PATHS_LIST="
2069     bindir
2070     datadir
2071     docdir
2072     incdir
2073     libdir
2074     mandir
2075     pkgconfigdir
2076     prefix
2077     shlibdir
2078 "
2079
2080 CMDLINE_SET="
2081     $PATHS_LIST
2082     ar
2083     arch
2084     as
2085     assert_level
2086     build_suffix
2087     cc
2088     objcc
2089     cpu
2090     cross_prefix
2091     custom_allocator
2092     cxx
2093     dep_cc
2094     doxygen
2095     env
2096     extra_version
2097     gas
2098     host_cc
2099     host_cflags
2100     host_ld
2101     host_ldflags
2102     host_libs
2103     host_os
2104     install
2105     ld
2106     logfile
2107     malloc_prefix
2108     nm
2109     optflags
2110     pkg_config
2111     pkg_config_flags
2112     progs_suffix
2113     random_seed
2114     ranlib
2115     samples
2116     strip
2117     sws_max_filter_size
2118     sysinclude
2119     sysroot
2120     target_exec
2121     target_os
2122     target_path
2123     target_samples
2124     tempprefix
2125     toolchain
2126     valgrind
2127     yasmexe
2128 "
2129
2130 CMDLINE_APPEND="
2131     extra_cflags
2132     extra_cxxflags
2133     extra_objcflags
2134     host_cppflags
2135 "
2136
2137 # code dependency declarations
2138
2139 # architecture extensions
2140
2141 armv5te_deps="arm"
2142 armv6_deps="arm"
2143 armv6t2_deps="arm"
2144 armv8_deps="aarch64"
2145 neon_deps_any="aarch64 arm"
2146 intrinsics_neon_deps="neon"
2147 vfp_deps_any="aarch64 arm"
2148 vfpv3_deps="vfp"
2149 setend_deps="arm"
2150
2151 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2152
2153 mipsfpu_deps="mips"
2154 mipsdsp_deps="mips"
2155 mipsdspr2_deps="mips"
2156 mips32r2_deps="mips"
2157 mips32r6_deps="mips"
2158 mips64r2_deps="mips"
2159 mips64r6_deps="mips"
2160 msa_deps="mips"
2161 mmi_deps="mips"
2162
2163 altivec_deps="ppc"
2164 dcbzl_deps="ppc"
2165 ldbrx_deps="ppc"
2166 ppc4xx_deps="ppc"
2167 vsx_deps="altivec"
2168 power8_deps="vsx"
2169
2170 cpunop_deps="i686"
2171 x86_64_select="i686"
2172 x86_64_suggest="fast_cmov"
2173
2174 amd3dnow_deps="mmx"
2175 amd3dnowext_deps="amd3dnow"
2176 i686_deps="x86"
2177 mmx_deps="x86"
2178 mmxext_deps="mmx"
2179 sse_deps="mmxext"
2180 sse2_deps="sse"
2181 sse3_deps="sse2"
2182 ssse3_deps="sse3"
2183 sse4_deps="ssse3"
2184 sse42_deps="sse4"
2185 aesni_deps="sse42"
2186 avx_deps="sse42"
2187 xop_deps="avx"
2188 fma3_deps="avx"
2189 fma4_deps="avx"
2190 avx2_deps="avx"
2191
2192 mmx_external_deps="yasm"
2193 mmx_inline_deps="inline_asm"
2194 mmx_suggest="mmx_external mmx_inline"
2195
2196 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2197     eval dep=\$${ext}_deps
2198     eval ${ext}_external_deps='"${dep}_external"'
2199     eval ${ext}_inline_deps='"${dep}_inline"'
2200     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2201 done
2202
2203 aligned_stack_if_any="aarch64 ppc x86"
2204 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2205 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2206 fast_unaligned_if_any="aarch64 ppc x86"
2207 simd_align_16_if_any="altivec neon sse"
2208
2209 # system capabilities
2210 symver_if_any="symver_asm_label symver_gnu_asm"
2211 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2212
2213 # threading support
2214 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2215 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2216 atomics_win32_if="MemoryBarrier"
2217 atomics_native_if_any="$ATOMICS_LIST"
2218 w32threads_deps="atomics_native"
2219 threads_if_any="$THREADS_LIST"
2220
2221 # subsystems
2222 dct_select="rdft"
2223 dirac_parse_select="golomb"
2224 error_resilience_select="me_cmp"
2225 faandct_deps="faan fdctdsp"
2226 faanidct_deps="faan idctdsp"
2227 frame_thread_encoder_deps="encoders threads"
2228 intrax8_select="error_resilience"
2229 mdct_select="fft"
2230 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2231 mpeg_er_select="error_resilience"
2232 mpegaudio_select="mpegaudiodsp"
2233 mpegaudiodsp_select="dct"
2234 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2235 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2236 qsvdec_select="qsv"
2237 qsvenc_select="qsv"
2238 rdft_select="fft"
2239
2240 # decoders / encoders
2241 aac_decoder_select="imdct15 mdct sinewin"
2242 aac_fixed_decoder_select="mdct sinewin"
2243 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2244 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2245 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2246 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2247 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2248 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2249 adpcm_g722_decoder_select="g722dsp"
2250 adpcm_g722_encoder_select="g722dsp"
2251 aic_decoder_select="golomb idctdsp"
2252 alac_encoder_select="lpc"
2253 als_decoder_select="bswapdsp"
2254 amrnb_decoder_select="lsp"
2255 amrwb_decoder_select="lsp"
2256 amv_decoder_select="sp5x_decoder exif"
2257 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2258 ape_decoder_select="bswapdsp llauddsp"
2259 apng_decoder_select="zlib"
2260 apng_encoder_select="huffyuvencdsp zlib"
2261 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2262 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2263 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2264 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2265 atrac1_decoder_select="mdct sinewin"
2266 atrac3_decoder_select="mdct"
2267 atrac3p_decoder_select="mdct sinewin"
2268 avrn_decoder_select="exif jpegtables"
2269 bink_decoder_select="blockdsp hpeldsp"
2270 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2271 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2272 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2273 cllc_decoder_select="bswapdsp"
2274 comfortnoise_encoder_select="lpc"
2275 cook_decoder_select="audiodsp mdct sinewin"
2276 cscd_decoder_select="lzo"
2277 cscd_decoder_suggest="zlib"
2278 dca_decoder_select="fmtconvert mdct"
2279 dds_decoder_select="texturedsp"
2280 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2281 dnxhd_decoder_select="blockdsp idctdsp"
2282 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2283 dvvideo_decoder_select="dvprofile idctdsp"
2284 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2285 dxa_decoder_select="zlib"
2286 dxv_decoder_select="lzf texturedsp"
2287 eac3_decoder_select="ac3_decoder"
2288 eac3_encoder_select="ac3_encoder"
2289 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2290 eatgq_decoder_select="aandcttables"
2291 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2292 exr_decoder_select="zlib"
2293 ffv1_decoder_select="golomb rangecoder"
2294 ffv1_encoder_select="rangecoder"
2295 ffvhuff_decoder_select="huffyuv_decoder"
2296 ffvhuff_encoder_select="huffyuv_encoder"
2297 fic_decoder_select="golomb"
2298 flac_decoder_select="flacdsp golomb"
2299 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2300 flashsv2_decoder_select="zlib"
2301 flashsv2_encoder_select="zlib"
2302 flashsv_decoder_select="zlib"
2303 flashsv_encoder_select="zlib"
2304 flv_decoder_select="h263_decoder"
2305 flv_encoder_select="h263_encoder"
2306 fourxm_decoder_select="blockdsp bswapdsp"
2307 fraps_decoder_select="bswapdsp huffman"
2308 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2309 g729_decoder_select="audiodsp"
2310 h261_decoder_select="mpegvideo"
2311 h261_encoder_select="aandcttables mpegvideoenc"
2312 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2313 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2314 h263i_decoder_select="h263_decoder"
2315 h263p_decoder_select="h263_decoder"
2316 h263p_encoder_select="h263_encoder"
2317 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2318 h264_decoder_suggest="error_resilience"
2319 h264_qsv_decoder_deps="libmfx"
2320 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2321 h264_qsv_encoder_deps="libmfx"
2322 h264_qsv_encoder_select="qsvenc"
2323 hap_decoder_select="snappy texturedsp"
2324 hap_encoder_deps="libsnappy"
2325 hap_encoder_select="texturedspenc"
2326 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2327 hevc_qsv_decoder_deps="libmfx"
2328 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2329 hevc_qsv_encoder_deps="libmfx"
2330 hevc_qsv_encoder_select="qsvenc"
2331 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2332 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2333 iac_decoder_select="imc_decoder"
2334 imc_decoder_select="bswapdsp fft mdct sinewin"
2335 indeo3_decoder_select="hpeldsp"
2336 indeo4_decoder_select="ividsp"
2337 indeo5_decoder_select="ividsp"
2338 interplay_video_decoder_select="hpeldsp"
2339 jpegls_decoder_select="golomb mjpeg_decoder"
2340 jpegls_encoder_select="golomb"
2341 jv_decoder_select="blockdsp"
2342 lagarith_decoder_select="huffyuvdsp"
2343 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2344 loco_decoder_select="golomb"
2345 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2346 metasound_decoder_select="lsp mdct sinewin"
2347 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2348 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2349 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2350 mjpegb_decoder_select="mjpeg_decoder"
2351 mlp_decoder_select="mlp_parser"
2352 motionpixels_decoder_select="bswapdsp"
2353 mp1_decoder_select="mpegaudio"
2354 mp1float_decoder_select="mpegaudio"
2355 mp2_decoder_select="mpegaudio"
2356 mp2float_decoder_select="mpegaudio"
2357 mp3_decoder_select="mpegaudio"
2358 mp3adu_decoder_select="mpegaudio"
2359 mp3adufloat_decoder_select="mpegaudio"
2360 mp3float_decoder_select="mpegaudio"
2361 mp3on4_decoder_select="mpegaudio"
2362 mp3on4float_decoder_select="mpegaudio"
2363 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2364 mpc8_decoder_select="mpegaudiodsp"
2365 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2366 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2367 mpegvideo_decoder_select="mpegvideo"
2368 mpeg1video_decoder_select="mpegvideo"
2369 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2370 mpeg2video_decoder_select="mpegvideo"
2371 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2372 mpeg2_qsv_decoder_deps="libmfx"
2373 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2374 mpeg2_qsv_encoder_deps="libmfx"
2375 mpeg2_qsv_encoder_select="qsvenc"
2376 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2377 mpeg4_encoder_select="h263_encoder"
2378 msa1_decoder_select="mss34dsp"
2379 msmpeg4v1_decoder_select="h263_decoder"
2380 msmpeg4v2_decoder_select="h263_decoder"
2381 msmpeg4v2_encoder_select="h263_encoder"
2382 msmpeg4v3_decoder_select="h263_decoder"
2383 msmpeg4v3_encoder_select="h263_encoder"
2384 mss2_decoder_select="vc1_decoder"
2385 mts2_decoder_select="mss34dsp"
2386 mxpeg_decoder_select="mjpeg_decoder"
2387 nellymoser_decoder_select="mdct sinewin"
2388 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2389 nuv_decoder_select="idctdsp lzo"
2390 on2avc_decoder_select="mdct"
2391 opus_decoder_deps="swresample"
2392 opus_decoder_select="imdct15"
2393 png_decoder_select="zlib"
2394 png_encoder_select="huffyuvencdsp zlib"
2395 prores_decoder_select="blockdsp idctdsp"
2396 prores_encoder_select="fdctdsp"
2397 qcelp_decoder_select="lsp"
2398 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2399 ra_144_decoder_select="audiodsp"
2400 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2401 ralf_decoder_select="golomb"
2402 rawvideo_decoder_select="bswapdsp"
2403 rscc_decoder_select="zlib"
2404 rtjpeg_decoder_select="me_cmp"
2405 rv10_decoder_select="h263_decoder"
2406 rv10_encoder_select="h263_encoder"
2407 rv20_decoder_select="h263_decoder"
2408 rv20_encoder_select="h263_encoder"
2409 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2410 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2411 screenpresso_decoder_select="zlib"
2412 shorten_decoder_select="golomb"
2413 sipr_decoder_select="lsp"
2414 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2415 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2416 sonic_decoder_select="golomb rangecoder"
2417 sonic_encoder_select="golomb rangecoder"
2418 sonic_ls_encoder_select="golomb rangecoder"
2419 sp5x_decoder_select="mjpeg_decoder"
2420 svq1_decoder_select="hpeldsp"
2421 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2422 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2423 svq3_decoder_suggest="zlib"
2424 tak_decoder_select="audiodsp"
2425 tdsc_decoder_select="zlib mjpeg_decoder"
2426 theora_decoder_select="vp3_decoder"
2427 thp_decoder_select="mjpeg_decoder"
2428 tiff_decoder_suggest="zlib lzma"
2429 tiff_encoder_suggest="zlib"
2430 truehd_decoder_select="mlp_parser"
2431 truemotion2_decoder_select="bswapdsp"
2432 truespeech_decoder_select="bswapdsp"
2433 tscc_decoder_select="zlib"
2434 twinvq_decoder_select="mdct lsp sinewin"
2435 txd_decoder_select="texturedsp"
2436 utvideo_decoder_select="bswapdsp"
2437 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2438 vble_decoder_select="huffyuvdsp"
2439 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2440 vc1_qsv_decoder_deps="libmfx"
2441 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2442 vc1image_decoder_select="vc1_decoder"
2443 vorbis_decoder_select="mdct"
2444 vorbis_encoder_select="mdct"
2445 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2446 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2447 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2448 vp6a_decoder_select="vp6_decoder"
2449 vp6f_decoder_select="vp6_decoder"
2450 vp7_decoder_select="h264pred videodsp vp8dsp"
2451 vp8_decoder_select="h264pred videodsp vp8dsp"
2452 vp9_decoder_select="videodsp vp9_parser"
2453 webp_decoder_select="vp8_decoder exif"
2454 wmalossless_decoder_select="llauddsp"
2455 wmapro_decoder_select="mdct sinewin wma_freqs"
2456 wmav1_decoder_select="mdct sinewin wma_freqs"
2457 wmav1_encoder_select="mdct sinewin wma_freqs"
2458 wmav2_decoder_select="mdct sinewin wma_freqs"
2459 wmav2_encoder_select="mdct sinewin wma_freqs"
2460 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2461 wmv1_decoder_select="h263_decoder"
2462 wmv1_encoder_select="h263_encoder"
2463 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2464 wmv2_encoder_select="h263_encoder wmv2dsp"
2465 wmv3_decoder_select="vc1_decoder"
2466 wmv3image_decoder_select="wmv3_decoder"
2467 xma1_decoder_select="wmapro_decoder"
2468 xma2_decoder_select="wmapro_decoder"
2469 zerocodec_decoder_select="zlib"
2470 zlib_decoder_select="zlib"
2471 zlib_encoder_select="zlib"
2472 zmbv_decoder_select="zlib"
2473 zmbv_encoder_select="zlib"
2474
2475 # hardware accelerators
2476 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2477 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2478 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2479 vaapi_deps="va_va_h"
2480 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2481 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2482 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2483 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2484 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2485 xvmc_deps="X11_extensions_XvMClib_h"
2486
2487 h263_vaapi_hwaccel_deps="vaapi"
2488 h263_vaapi_hwaccel_select="h263_decoder"
2489 h263_videotoolbox_hwaccel_deps="videotoolbox"
2490 h263_videotoolbox_hwaccel_select="h263_decoder"
2491 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2492 h264_d3d11va_hwaccel_deps="d3d11va"
2493 h264_d3d11va_hwaccel_select="h264_decoder"
2494 h264_dxva2_hwaccel_deps="dxva2"
2495 h264_dxva2_hwaccel_select="h264_decoder"
2496 h264_mmal_decoder_deps="mmal"
2497 h264_mmal_decoder_select="mmal"
2498 h264_mmal_hwaccel_deps="mmal"
2499 h264_qsv_hwaccel_deps="libmfx"
2500 h264_vaapi_hwaccel_deps="vaapi"
2501 h264_vaapi_hwaccel_select="h264_decoder"
2502 h264_vda_decoder_deps="vda"
2503 h264_vda_decoder_select="h264_decoder"
2504 h264_vda_hwaccel_deps="vda"
2505 h264_vda_hwaccel_select="h264_decoder"
2506 h264_vda_old_hwaccel_deps="vda"
2507 h264_vda_old_hwaccel_select="h264_decoder"
2508 h264_vdpau_decoder_deps="vdpau"
2509 h264_vdpau_decoder_select="h264_decoder"
2510 h264_vdpau_hwaccel_deps="vdpau"
2511 h264_vdpau_hwaccel_select="h264_decoder"
2512 h264_videotoolbox_hwaccel_deps="videotoolbox"
2513 h264_videotoolbox_hwaccel_select="h264_decoder"
2514 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2515 hevc_d3d11va_hwaccel_select="hevc_decoder"
2516 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2517 hevc_dxva2_hwaccel_select="hevc_decoder"
2518 hevc_qsv_hwaccel_deps="libmfx"
2519 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2520 hevc_vaapi_hwaccel_select="hevc_decoder"
2521 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2522 hevc_vdpau_hwaccel_select="hevc_decoder"
2523 mpeg_vdpau_decoder_deps="vdpau"
2524 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2525 mpeg_xvmc_hwaccel_deps="xvmc"
2526 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2527 mpeg1_vdpau_decoder_deps="vdpau"
2528 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2529 mpeg1_vdpau_hwaccel_deps="vdpau"
2530 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2531 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2532 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2533 mpeg1_xvmc_hwaccel_deps="xvmc"
2534 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2535 mpeg2_crystalhd_decoder_select="crystalhd"
2536 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2537 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2538 mpeg2_dxva2_hwaccel_deps="dxva2"
2539 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2540 mpeg2_mmal_decoder_deps="mmal"
2541 mpeg2_mmal_decoder_select="mmal"
2542 mpeg2_mmal_hwaccel_deps="mmal"
2543 mpeg2_qsv_hwaccel_deps="libmfx"
2544 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2545 mpeg2_vaapi_hwaccel_deps="vaapi"
2546 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2547 mpeg2_vdpau_hwaccel_deps="vdpau"
2548 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2549 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2550 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2551 mpeg2_xvmc_hwaccel_deps="xvmc"
2552 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2553 mpeg4_crystalhd_decoder_select="crystalhd"
2554 mpeg4_mmal_decoder_deps="mmal"
2555 mpeg4_mmal_decoder_select="mmal"
2556 mpeg4_mmal_hwaccel_deps="mmal"
2557 mpeg4_vaapi_hwaccel_deps="vaapi"
2558 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2559 mpeg4_vdpau_decoder_deps="vdpau"
2560 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2561 mpeg4_vdpau_hwaccel_deps="vdpau"
2562 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2563 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2564 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2565 msmpeg4_crystalhd_decoder_select="crystalhd"
2566 vc1_crystalhd_decoder_select="crystalhd"
2567 vc1_d3d11va_hwaccel_deps="d3d11va"
2568 vc1_d3d11va_hwaccel_select="vc1_decoder"
2569 vc1_dxva2_hwaccel_deps="dxva2"
2570 vc1_dxva2_hwaccel_select="vc1_decoder"
2571 vc1_mmal_decoder_deps="mmal"
2572 vc1_mmal_decoder_select="mmal"
2573 vc1_mmal_hwaccel_deps="mmal"
2574 vc1_qsv_hwaccel_deps="libmfx"
2575 vc1_qsv_hwaccel_select="qsvdec_vc1"
2576 vc1_vaapi_hwaccel_deps="vaapi"
2577 vc1_vaapi_hwaccel_select="vc1_decoder"
2578 vc1_vdpau_decoder_deps="vdpau"
2579 vc1_vdpau_decoder_select="vc1_decoder"
2580 vc1_vdpau_hwaccel_deps="vdpau"
2581 vc1_vdpau_hwaccel_select="vc1_decoder"
2582 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2583 vp9_d3d11va_hwaccel_select="vp9_decoder"
2584 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2585 vp9_dxva2_hwaccel_select="vp9_decoder"
2586 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2587 vp9_vaapi_hwaccel_select="vp9_decoder"
2588 wmv3_crystalhd_decoder_select="crystalhd"
2589 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2590 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2591 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2592 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2593 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2594
2595 # parsers
2596 h264_parser_select="h264_decoder"
2597 hevc_parser_select="golomb"
2598 mpegvideo_parser_select="mpegvideo"
2599 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2600 vc1_parser_select="mpegvideo startcode vc1_decoder"
2601
2602 # bitstream_filters
2603 mjpeg2jpeg_bsf_select="jpegtables"
2604
2605 # external libraries
2606 chromaprint_muxer_deps="chromaprint"
2607 libaacplus_encoder_deps="libaacplus"
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_aacenc_encoder_deps="libvo_aacenc"
2648 libvo_aacenc_encoder_select="audio_frame_queue"
2649 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2650 libvorbis_decoder_deps="libvorbis"
2651 libvorbis_encoder_deps="libvorbis"
2652 libvorbis_encoder_select="audio_frame_queue"
2653 libvpx_vp8_decoder_deps="libvpx"
2654 libvpx_vp8_encoder_deps="libvpx"
2655 libvpx_vp9_decoder_deps="libvpx"
2656 libvpx_vp9_encoder_deps="libvpx"
2657 libwavpack_encoder_deps="libwavpack"
2658 libwebp_encoder_deps="libwebp"
2659 libwebp_anim_encoder_deps="libwebp"
2660 libx262_encoder_deps="libx262"
2661 libx264_encoder_deps="libx264"
2662 libx264rgb_encoder_deps="libx264"
2663 libx264rgb_encoder_select="libx264_encoder"
2664 libx265_encoder_deps="libx265"
2665 libxavs_encoder_deps="libxavs"
2666 libxvid_encoder_deps="libxvid"
2667 libzvbi_teletext_decoder_deps="libzvbi"
2668 nvenc_encoder_deps="nvenc"
2669 nvenc_h264_encoder_deps="nvenc"
2670 nvenc_hevc_encoder_deps="nvenc"
2671
2672 # demuxers / muxers
2673 ac3_demuxer_select="ac3_parser"
2674 asf_demuxer_select="riffdec"
2675 asf_o_demuxer_select="riffdec"
2676 asf_muxer_select="riffenc"
2677 asf_stream_muxer_select="asf_muxer"
2678 avi_demuxer_select="riffdec exif"
2679 avi_muxer_select="riffenc"
2680 avisynth_demuxer_deps="avisynth"
2681 avisynth_demuxer_select="riffdec"
2682 caf_demuxer_select="riffdec"
2683 dash_muxer_select="mp4_muxer"
2684 dirac_demuxer_select="dirac_parser"
2685 dts_demuxer_select="dca_parser"
2686 dtshd_demuxer_select="dca_parser"
2687 dv_demuxer_select="dvprofile"
2688 dv_muxer_select="dvprofile"
2689 dxa_demuxer_select="riffdec"
2690 eac3_demuxer_select="ac3_parser"
2691 f4v_muxer_select="mov_muxer"
2692 flac_demuxer_select="flac_parser"
2693 hds_muxer_select="flv_muxer"
2694 hls_muxer_select="mpegts_muxer"
2695 image2_alias_pix_demuxer_select="image2_demuxer"
2696 image2_brender_pix_demuxer_select="image2_demuxer"
2697 ipod_muxer_select="mov_muxer"
2698 ismv_muxer_select="mov_muxer"
2699 libnut_demuxer_deps="libnut"
2700 libnut_muxer_deps="libnut"
2701 matroska_audio_muxer_select="matroska_muxer"
2702 matroska_demuxer_select="riffdec"
2703 matroska_demuxer_suggest="bzlib lzo zlib"
2704 matroska_muxer_select="riffenc"
2705 mmf_muxer_select="riffenc"
2706 mov_demuxer_select="riffdec"
2707 mov_demuxer_suggest="zlib"
2708 mov_muxer_select="riffenc rtpenc_chain"
2709 mp3_demuxer_select="mpegaudio_parser"
2710 mp4_muxer_select="mov_muxer"
2711 mpegts_muxer_select="adts_muxer latm_muxer"
2712 mpegtsraw_demuxer_select="mpegts_demuxer"
2713 mxf_d10_muxer_select="mxf_muxer"
2714 mxf_opatom_muxer_select="mxf_muxer"
2715 nut_muxer_select="riffenc"
2716 nuv_demuxer_select="riffdec"
2717 oga_muxer_select="ogg_muxer"
2718 ogg_demuxer_select="dirac_parse"
2719 opus_muxer_select="ogg_muxer"
2720 psp_muxer_select="mov_muxer"
2721 rtp_demuxer_select="sdp_demuxer"
2722 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2723 rtsp_demuxer_select="http_protocol rtpdec"
2724 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2725 sap_demuxer_select="sdp_demuxer"
2726 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2727 sdp_demuxer_select="rtpdec"
2728 smoothstreaming_muxer_select="ismv_muxer"
2729 spdif_muxer_select="aac_parser"
2730 spx_muxer_select="ogg_muxer"
2731 swf_demuxer_suggest="zlib"
2732 tak_demuxer_select="tak_parser"
2733 tg2_muxer_select="mov_muxer"
2734 tgp_muxer_select="mov_muxer"
2735 vobsub_demuxer_select="mpegps_demuxer"
2736 w64_demuxer_select="wav_demuxer"
2737 w64_muxer_select="wav_muxer"
2738 wav_demuxer_select="riffdec"
2739 wav_muxer_select="riffenc"
2740 webm_muxer_select="riffenc"
2741 wtv_demuxer_select="riffdec"
2742 wtv_muxer_select="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 sem_timedwait"
2768 lavfi_indev_deps="avfilter"
2769 libcdio_indev_deps="libcdio"
2770 libdc1394_indev_deps="libdc1394"
2771 libv4l2_indev_deps="libv4l2"
2772 openal_indev_deps="openal"
2773 opengl_outdev_deps="opengl"
2774 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2775 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2776 pulse_indev_deps="libpulse"
2777 pulse_outdev_deps="libpulse"
2778 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2779 qtkit_indev_select="qtkit"
2780 sdl_outdev_deps="sdl"
2781 sndio_indev_deps="sndio_h"
2782 sndio_outdev_deps="sndio_h"
2783 v4l_indev_deps="linux_videodev_h"
2784 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2785 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2786 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2787 vfwcap_indev_extralibs="-lavicap32"
2788 x11grab_indev_deps="x11grab"
2789 x11grab_xcb_indev_deps="libxcb"
2790 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2791 xv_outdev_extralibs="-lXv -lX11 -lXext"
2792
2793 # protocols
2794 async_protocol_deps="threads"
2795 bluray_protocol_deps="libbluray"
2796 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2797 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2798 ffrtmpcrypt_protocol_select="tcp_protocol"
2799 ffrtmphttp_protocol_deps="!librtmp_protocol"
2800 ffrtmphttp_protocol_select="http_protocol"
2801 ftp_protocol_select="tcp_protocol"
2802 gopher_protocol_select="network"
2803 http_protocol_select="tcp_protocol"
2804 httpproxy_protocol_select="tcp_protocol"
2805 https_protocol_select="tls_protocol"
2806 icecast_protocol_select="http_protocol"
2807 librtmp_protocol_deps="librtmp"
2808 librtmpe_protocol_deps="librtmp"
2809 librtmps_protocol_deps="librtmp"
2810 librtmpt_protocol_deps="librtmp"
2811 librtmpte_protocol_deps="librtmp"
2812 libsmbclient_protocol_deps="libsmbclient gplv3"
2813 libssh_protocol_deps="libssh"
2814 mmsh_protocol_select="http_protocol"
2815 mmst_protocol_select="network"
2816 rtmp_protocol_deps="!librtmp_protocol"
2817 rtmp_protocol_select="tcp_protocol"
2818 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2819 rtmps_protocol_deps="!librtmp_protocol"
2820 rtmps_protocol_select="tls_protocol"
2821 rtmpt_protocol_select="ffrtmphttp_protocol"
2822 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2823 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2824 rtp_protocol_select="udp_protocol"
2825 sctp_protocol_deps="struct_sctp_event_subscribe"
2826 sctp_protocol_select="network"
2827 srtp_protocol_select="rtp_protocol"
2828 tcp_protocol_select="network"
2829 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2830 tls_gnutls_protocol_select="tcp_protocol"
2831 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2832 tls_openssl_protocol_select="tcp_protocol"
2833 tls_schannel_protocol_deps="schannel"
2834 tls_schannel_protocol_select="tcp_protocol"
2835 tls_securetransport_protocol_deps="securetransport"
2836 tls_securetransport_protocol_select="tcp_protocol"
2837 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2838 udp_protocol_select="network"
2839 udplite_protocol_select="network"
2840 unix_protocol_deps="sys_un_h"
2841 unix_protocol_select="network"
2842
2843 # filters
2844 afftfilt_filter_deps="avcodec"
2845 afftfilt_filter_select="fft"
2846 amovie_filter_deps="avcodec avformat"
2847 aresample_filter_deps="swresample"
2848 ass_filter_deps="libass"
2849 asyncts_filter_deps="avresample"
2850 atempo_filter_deps="avcodec"
2851 atempo_filter_select="rdft"
2852 azmq_filter_deps="libzmq"
2853 blackframe_filter_deps="gpl"
2854 boxblur_filter_deps="gpl"
2855 bs2b_filter_deps="libbs2b"
2856 colormatrix_filter_deps="gpl"
2857 cover_rect_filter_deps="avcodec avformat gpl"
2858 cropdetect_filter_deps="gpl"
2859 delogo_filter_deps="gpl"
2860 deshake_filter_select="pixelutils"
2861 drawtext_filter_deps="libfreetype"
2862 ebur128_filter_deps="gpl"
2863 eq_filter_deps="gpl"
2864 fftfilt_filter_deps="avcodec"
2865 fftfilt_filter_select="rdft"
2866 find_rect_filter_deps="avcodec avformat gpl"
2867 flite_filter_deps="libflite"
2868 frei0r_filter_deps="frei0r dlopen"
2869 frei0r_src_filter_deps="frei0r dlopen"
2870 fspp_filter_deps="gpl"
2871 geq_filter_deps="gpl"
2872 histeq_filter_deps="gpl"
2873 hqdn3d_filter_deps="gpl"
2874 interlace_filter_deps="gpl"
2875 kerndeint_filter_deps="gpl"
2876 ladspa_filter_deps="ladspa dlopen"
2877 mcdeint_filter_deps="avcodec gpl"
2878 movie_filter_deps="avcodec avformat"
2879 mpdecimate_filter_deps="gpl"
2880 mpdecimate_filter_select="pixelutils"
2881 mptestsrc_filter_deps="gpl"
2882 negate_filter_deps="lut_filter"
2883 ocr_filter_deps="libtesseract"
2884 ocv_filter_deps="libopencv"
2885 owdenoise_filter_deps="gpl"
2886 pan_filter_deps="swresample"
2887 perspective_filter_deps="gpl"
2888 phase_filter_deps="gpl"
2889 pp7_filter_deps="gpl"
2890 pp_filter_deps="gpl postproc"
2891 pullup_filter_deps="gpl"
2892 removelogo_filter_deps="avcodec avformat swscale"
2893 repeatfields_filter_deps="gpl"
2894 resample_filter_deps="avresample"
2895 rubberband_filter_deps="librubberband"
2896 sab_filter_deps="gpl swscale"
2897 scale2ref_filter_deps="swscale"
2898 scale_filter_deps="swscale"
2899 select_filter_select="pixelutils"
2900 showcqt_filter_deps="avcodec avformat swscale"
2901 showcqt_filter_select="fft"
2902 showfreqs_filter_deps="avcodec"
2903 showfreqs_filter_select="fft"
2904 showspectrum_filter_deps="avcodec"
2905 showspectrum_filter_select="fft"
2906 showspectrumpic_filter_deps="avcodec"
2907 showspectrumpic_filter_select="fft"
2908 smartblur_filter_deps="gpl swscale"
2909 sofalizer_filter_deps="netcdf avcodec"
2910 sofalizer_filter_select="fft"
2911 spectrumsynth_filter_deps="avcodec"
2912 spectrumsynth_filter_select="fft"
2913 spp_filter_deps="gpl avcodec"
2914 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2915 stereo3d_filter_deps="gpl"
2916 subtitles_filter_deps="avformat avcodec libass"
2917 super2xsai_filter_deps="gpl"
2918 pixfmts_super2xsai_test_deps="super2xsai_filter"
2919 tinterlace_filter_deps="gpl"
2920 tinterlace_merge_test_deps="tinterlace_filter"
2921 tinterlace_pad_test_deps="tinterlace_filter"
2922 uspp_filter_deps="gpl avcodec"
2923 vidstabdetect_filter_deps="libvidstab"
2924 vidstabtransform_filter_deps="libvidstab"
2925 zmq_filter_deps="libzmq"
2926 zoompan_filter_deps="swscale"
2927 zscale_filter_deps="libzimg"
2928
2929 # examples
2930 avcodec_example_deps="avcodec avutil"
2931 avio_dir_cmd="avformat avutil"
2932 avio_reading="avformat avcodec avutil"
2933 decoding_encoding_example_deps="avcodec avformat avutil"
2934 demuxing_decoding_example_deps="avcodec avformat avutil"
2935 extract_mvs_example_deps="avcodec avformat avutil"
2936 filter_audio_example_deps="avfilter avutil"
2937 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2938 filtering_video_example_deps="avfilter avcodec avformat avutil"
2939 metadata_example_deps="avformat avutil"
2940 muxing_example_deps="avcodec avformat avutil swscale"
2941 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2942 remuxing_example_deps="avcodec avformat avutil"
2943 resampling_audio_example_deps="avutil swresample"
2944 scaling_video_example_deps="avutil swscale"
2945 transcode_aac_example_deps="avcodec avformat swresample"
2946 transcoding_example_deps="avfilter avcodec avformat avutil"
2947
2948 # libraries, in linking order
2949 avcodec_deps="avutil"
2950 avdevice_deps="avformat avcodec avutil"
2951 avfilter_deps="avutil"
2952 avformat_deps="avcodec avutil"
2953 avresample_deps="avutil"
2954 postproc_deps="avutil gpl"
2955 swresample_deps="avutil"
2956 swscale_deps="avutil"
2957
2958 # programs
2959 ffmpeg_deps="avcodec avfilter avformat swresample"
2960 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2961                null_filter
2962                setpts_filter trim_filter"
2963 ffplay_deps="avcodec avformat swscale swresample sdl"
2964 ffplay_libs='$sdl_libs'
2965 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2966 ffprobe_deps="avcodec avformat"
2967 ffserver_deps="avformat fork sarestart"
2968 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2969
2970 # documentation
2971 podpages_deps="perl"
2972 manpages_deps="perl pod2man"
2973 htmlpages_deps="perl"
2974 htmlpages_deps_any="makeinfo_html texi2html"
2975 txtpages_deps="perl makeinfo"
2976 doc_deps_any="manpages htmlpages podpages txtpages"
2977
2978 # default parameters
2979
2980 logfile="config.log"
2981
2982 # installation paths
2983 prefix_default="/usr/local"
2984 bindir_default='${prefix}/bin'
2985 datadir_default='${prefix}/share/ffmpeg'
2986 docdir_default='${prefix}/share/doc/ffmpeg'
2987 incdir_default='${prefix}/include'
2988 libdir_default='${prefix}/lib'
2989 mandir_default='${prefix}/share/man'
2990
2991 # toolchain
2992 ar_default="ar"
2993 cc_default="gcc"
2994 cxx_default="g++"
2995 host_cc_default="gcc"
2996 cp_f="cp -f"
2997 doxygen_default="doxygen"
2998 install="install"
2999 ln_s="ln -s -f"
3000 nm_default="nm -g"
3001 objformat="elf"
3002 pkg_config_default=pkg-config
3003 ranlib_default="ranlib"
3004 strip_default="strip"
3005 yasmexe_default="yasm"
3006 windres_default="windres"
3007
3008 # OS
3009 target_os_default=$(tolower $(uname -s))
3010 host_os=$target_os_default
3011
3012 # machine
3013 if test "$target_os_default" = aix; then
3014     arch_default=$(uname -p)
3015     strip_default="strip -X32_64"
3016 else
3017     arch_default=$(uname -m)
3018 fi
3019 cpu="generic"
3020 intrinsics="none"
3021
3022 # configurable options
3023 enable $PROGRAM_LIST
3024 enable $DOCUMENT_LIST
3025 enable $EXAMPLE_LIST
3026 enable $(filter_out avresample $LIBRARY_LIST)
3027 enable stripping
3028
3029 enable asm
3030 enable debug
3031 enable doc
3032 enable faan faandct faanidct
3033 enable optimizations
3034 enable runtime_cpudetect
3035 enable safe_bitstream_reader
3036 enable static
3037 enable swscale_alpha
3038 enable valgrind_backtrace
3039
3040 sws_max_filter_size_default=256
3041 set_default sws_max_filter_size
3042
3043 # Enable hwaccels by default.
3044 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3045 enable xlib
3046
3047 # build settings
3048 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3049 LIBPREF="lib"
3050 LIBSUF=".a"
3051 FULLNAME='$(NAME)$(BUILDSUF)'
3052 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3053 SLIBPREF="lib"
3054 SLIBSUF=".so"
3055 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3056 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3057 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3058 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3059 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3060 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3061
3062 asflags_filter=echo
3063 cflags_filter=echo
3064 ldflags_filter=echo
3065
3066 AS_C='-c'
3067 AS_O='-o $@'
3068 CC_C='-c'
3069 CC_E='-E -o $@'
3070 CC_O='-o $@'
3071 CXX_C='-c'
3072 CXX_O='-o $@'
3073 OBJCC_C='-c'
3074 OBJCC_E='-E -o $@'
3075 OBJCC_O='-o $@'
3076 LD_O='-o $@'
3077 LD_LIB='-l%'
3078 LD_PATH='-L'
3079 HOSTCC_C='-c'
3080 HOSTCC_E='-E -o $@'
3081 HOSTCC_O='-o $@'
3082 HOSTLD_O='-o $@'
3083
3084 host_libs='-lm'
3085 host_cflags_filter=echo
3086 host_ldflags_filter=echo
3087
3088 target_path='$(CURDIR)'
3089
3090 # since the object filename is not given with the -MM flag, the compiler
3091 # is only able to print the basename, and we must add the path ourselves
3092 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3093 DEPFLAGS='-MM'
3094
3095 # find source path
3096 if test -f configure; then
3097     source_path=.
3098 else
3099     source_path=$(cd $(dirname "$0"); pwd)
3100     case "$source_path" in
3101         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3102     esac
3103     test -e "$source_path/config.h" &&
3104         die "Out of tree builds are impossible with config.h in source dir."
3105 fi
3106
3107 for v in "$@"; do
3108     r=${v#*=}
3109     l=${v%"$r"}
3110     r=$(sh_quote "$r")
3111     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3112 done
3113
3114 find_things(){
3115     thing=$1
3116     pattern=$2
3117     file=$source_path/$3
3118     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3119 }
3120
3121 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3122 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3123 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3124 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3125 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3126 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3127 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3128 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3129 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3130 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3131 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3132
3133 ALL_COMPONENTS="
3134     $BSF_LIST
3135     $DECODER_LIST
3136     $DEMUXER_LIST
3137     $ENCODER_LIST
3138     $FILTER_LIST
3139     $HWACCEL_LIST
3140     $INDEV_LIST
3141     $MUXER_LIST
3142     $OUTDEV_LIST
3143     $PARSER_LIST
3144     $PROTOCOL_LIST
3145 "
3146
3147 for n in $COMPONENT_LIST; do
3148     v=$(toupper ${n%s})_LIST
3149     eval enable \$$v
3150     eval ${n}_if_any="\$$v"
3151 done
3152
3153 enable $ARCH_EXT_LIST
3154
3155 die_unknown(){
3156     echo "Unknown option \"$1\"."
3157     echo "See $0 --help for available options."
3158     exit 1
3159 }
3160
3161 print_in_columns() {
3162     cols=$(expr $ncols / 24)
3163     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3164 }
3165
3166 show_list() {
3167     suffix=_$1
3168     shift
3169     echo $* | sed s/$suffix//g | print_in_columns
3170     exit 0
3171 }
3172
3173 rand_list(){
3174     IFS=', '
3175     set -- $*
3176     unset IFS
3177     for thing; do
3178         comp=${thing%:*}
3179         prob=${thing#$comp}
3180         prob=${prob#:}
3181         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3182         echo "prob ${prob:-0.5}"
3183         printf '%s\n' $comp
3184     done
3185 }
3186
3187 do_random(){
3188     action=$1
3189     shift
3190     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3191     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3192 }
3193
3194 for opt do
3195     optval="${opt#*=}"
3196     case "$opt" in
3197         --extra-ldflags=*)
3198             add_ldflags $optval
3199         ;;
3200         --extra-ldexeflags=*)
3201             add_ldexeflags $optval
3202         ;;
3203         --extra-ldlibflags=*)
3204             add_ldlibflags $optval
3205         ;;
3206         --extra-libs=*)
3207             add_extralibs $optval
3208         ;;
3209         --disable-devices)
3210             disable $INDEV_LIST $OUTDEV_LIST
3211         ;;
3212         --enable-debug=*)
3213             debuglevel="$optval"
3214         ;;
3215         --disable-programs)
3216             disable $PROGRAM_LIST
3217         ;;
3218         --disable-everything)
3219             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3220         ;;
3221         --disable-all)
3222             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3223             disable $LIBRARY_LIST $PROGRAM_LIST doc
3224             enable avutil
3225         ;;
3226         --enable-random|--disable-random)
3227             action=${opt%%-random}
3228             do_random ${action#--} $COMPONENT_LIST
3229         ;;
3230         --enable-random=*|--disable-random=*)
3231             action=${opt%%-random=*}
3232             do_random ${action#--} $optval
3233         ;;
3234         --enable-*=*|--disable-*=*)
3235             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3236             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3237             eval list=\$$(toupper $thing)_LIST
3238             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3239             list=$(filter "$name" $list)
3240             [ "$list" = "" ] && warn "Option $opt did not match anything"
3241             $action $list
3242         ;;
3243         --enable-?*|--disable-?*)
3244             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3245             if is_in $option $COMPONENT_LIST; then
3246                 test $action = disable && action=unset
3247                 eval $action \$$(toupper ${option%s})_LIST
3248             elif is_in $option $CMDLINE_SELECT; then
3249                 $action $option
3250             else
3251                 die_unknown $opt
3252             fi
3253         ;;
3254         --list-*)
3255             NAME="${opt#--list-}"
3256             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3257             NAME=${NAME%s}
3258             eval show_list $NAME \$$(toupper $NAME)_LIST
3259         ;;
3260         --help|-h) show_help
3261         ;;
3262         --fatal-warnings) enable fatal_warnings
3263         ;;
3264         *)
3265             optname="${opt%%=*}"
3266             optname="${optname#--}"
3267             optname=$(echo "$optname" | sed 's/-/_/g')
3268             if is_in $optname $CMDLINE_SET; then
3269                 eval $optname='$optval'
3270             elif is_in $optname $CMDLINE_APPEND; then
3271                 append $optname "$optval"
3272             else
3273                 die_unknown $opt
3274             fi
3275         ;;
3276     esac
3277 done
3278
3279 for e in $env; do
3280     eval "export $e"
3281 done
3282
3283 disabled logging && logfile=/dev/null
3284
3285 # Disable all the library-specific components if the library itself
3286 # is disabled, see AVCODEC_LIST and following _LIST variables.
3287
3288 disable_components(){
3289     disabled ${1} && disable $(
3290         eval components="\$$(toupper ${1})_COMPONENTS"
3291         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3292     )
3293 }
3294
3295 map 'disable_components $v' $LIBRARY_LIST
3296
3297 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3298 set >> $logfile
3299
3300 test -n "$valgrind" && toolchain="valgrind-memcheck"
3301
3302 case "$toolchain" in
3303     clang-asan)
3304         cc_default="clang"
3305         add_cflags  -fsanitize=address
3306         add_ldflags -fsanitize=address
3307     ;;
3308     clang-tsan)
3309         cc_default="clang"
3310         add_cflags  -fsanitize=thread -pie
3311         add_ldflags -fsanitize=thread -pie
3312     ;;
3313     clang-usan)
3314         cc_default="clang"
3315         add_cflags  -fsanitize=undefined
3316         add_ldflags -fsanitize=undefined
3317     ;;
3318     gcc-asan)
3319         cc_default="gcc"
3320         add_cflags  -fsanitize=address
3321         add_ldflags -fsanitize=address
3322     ;;
3323     gcc-tsan)
3324         cc_default="gcc"
3325         add_cflags  -fsanitize=thread -pie -fPIC
3326         add_ldflags -fsanitize=thread -pie -fPIC
3327     ;;
3328     gcc-usan)
3329         cc_default="gcc"
3330         add_cflags  -fsanitize=undefined
3331         add_ldflags -fsanitize=undefined
3332     ;;
3333     valgrind-massif)
3334         target_exec_default=${valgrind:-"valgrind"}
3335         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"
3336     ;;
3337     valgrind-memcheck)
3338         target_exec_default=${valgrind:-"valgrind"}
3339         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3340     ;;
3341     msvc)
3342         # Check whether the current MSVC version needs the C99 converter.
3343         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3344         # support enough of C99 to build ffmpeg. Default to the new
3345         # behaviour if the regexp was unable to match anything, since this
3346         # successfully parses the version number of existing supported
3347         # versions that require the converter (MSVC 2010 and 2012).
3348         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3349         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3350             cc_default="cl"
3351         else
3352             cc_default="c99wrap cl"
3353         fi
3354         ld_default="$source_path/compat/windows/mslink"
3355         nm_default="dumpbin -symbols"
3356         ar_default="lib"
3357         case "$arch" in
3358         arm*)
3359             as_default="armasm"
3360             ;;
3361         esac
3362         target_os_default="win32"
3363         # Use a relative path for TMPDIR. This makes sure all the
3364         # ffconf temp files are written with a relative path, avoiding
3365         # issues with msys/win32 path conversion for MSVC parameters
3366         # such as -Fo<file> or -out:<file>.
3367         TMPDIR=.
3368     ;;
3369     icl)
3370         cc_default="icl"
3371         ld_default="xilink"
3372         nm_default="dumpbin -symbols"
3373         ar_default="xilib"
3374         target_os_default="win32"
3375         TMPDIR=.
3376     ;;
3377     gcov)
3378         add_cflags  -fprofile-arcs -ftest-coverage
3379         add_ldflags -fprofile-arcs -ftest-coverage
3380     ;;
3381     hardened)
3382         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3383         add_cflags   -fno-strict-overflow -fstack-protector-all
3384         add_ldflags  -Wl,-z,relro -Wl,-z,now
3385     ;;
3386     ?*)
3387         die "Unknown toolchain $toolchain"
3388     ;;
3389 esac
3390
3391 test -n "$cross_prefix" && enable cross_compile
3392
3393 if enabled cross_compile; then
3394     test -n "$arch" && test -n "$target_os" ||
3395         die "Must specify target arch and OS when cross-compiling"
3396 fi
3397
3398 ar_default="${cross_prefix}${ar_default}"
3399 cc_default="${cross_prefix}${cc_default}"
3400 cxx_default="${cross_prefix}${cxx_default}"
3401 nm_default="${cross_prefix}${nm_default}"
3402 pkg_config_default="${cross_prefix}${pkg_config_default}"
3403 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3404     ranlib_default="${cross_prefix}${ranlib_default} -D"
3405 else
3406     ranlib_default="${cross_prefix}${ranlib_default}"
3407 fi
3408 strip_default="${cross_prefix}${strip_default}"
3409 windres_default="${cross_prefix}${windres_default}"
3410
3411 sysinclude_default="${sysroot}/usr/include"
3412
3413 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3414     target_exec target_os yasmexe
3415 enabled cross_compile || host_cc_default=$cc
3416 set_default host_cc
3417
3418 pkg_config_fail_message=""
3419 if ! $pkg_config --version >/dev/null 2>&1; then
3420     warn "$pkg_config not found, library detection may fail."
3421     pkg_config=false
3422 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3423     pkg_config_fail_message="
3424 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3425 fi
3426
3427 if test $doxygen != $doxygen_default && \
3428   ! $doxygen --version >/dev/null 2>&1; then
3429     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3430 fi
3431
3432 exesuf() {
3433     case $1 in
3434         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3435     esac
3436 }
3437
3438 EXESUF=$(exesuf $target_os)
3439 HOSTEXESUF=$(exesuf $host_os)
3440
3441 # set temporary file name
3442 : ${TMPDIR:=$TEMPDIR}
3443 : ${TMPDIR:=$TMP}
3444 : ${TMPDIR:=/tmp}
3445
3446 if [ -n "$tempprefix" ] ; then
3447     mktemp(){
3448         echo $tempprefix.${HOSTNAME}.${UID}
3449     }
3450 elif ! check_cmd mktemp -u XXXXXX; then
3451     # simple replacement for missing mktemp
3452     # NOT SAFE FOR GENERAL USE
3453     mktemp(){
3454         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3455     }
3456 fi
3457
3458 tmpfile(){
3459     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3460         (set -C; exec > $tmp) 2>/dev/null ||
3461         die "Unable to create temporary file in $TMPDIR."
3462     append TMPFILES $tmp
3463     eval $1=$tmp
3464 }
3465
3466 trap 'rm -f -- $TMPFILES' EXIT
3467
3468 tmpfile TMPASM .asm
3469 tmpfile TMPC   .c
3470 tmpfile TMPCPP .cpp
3471 tmpfile TMPE   $EXESUF
3472 tmpfile TMPH   .h
3473 tmpfile TMPM   .m
3474 tmpfile TMPO   .o
3475 tmpfile TMPS   .S
3476 tmpfile TMPSH  .sh
3477 tmpfile TMPV   .ver
3478
3479 unset -f mktemp
3480
3481 chmod +x $TMPE
3482
3483 # make sure we can execute files in $TMPDIR
3484 cat > $TMPSH 2>> $logfile <<EOF
3485 #! /bin/sh
3486 EOF
3487 chmod +x $TMPSH >> $logfile 2>&1
3488 if ! $TMPSH >> $logfile 2>&1; then
3489     cat <<EOF
3490 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3491 variable to another directory and make sure that it is not mounted noexec.
3492 EOF
3493     die "Sanity test failed."
3494 fi
3495
3496 armasm_flags(){
3497     for flag; do
3498         case $flag in
3499             # Filter out MSVC cl.exe options from cflags that shouldn't
3500             # be passed to gas-preprocessor
3501             -M[TD]*)                                            ;;
3502             *)                  echo $flag                      ;;
3503         esac
3504    done
3505 }
3506
3507 ccc_flags(){
3508     for flag; do
3509         case $flag in
3510             -std=c99)           echo -c99                       ;;
3511             -mcpu=*)            echo -arch ${flag#*=}           ;;
3512             -mieee)             echo -ieee                      ;;
3513             -O*|-fast)          echo $flag                      ;;
3514             -fno-math-errno)    echo -assume nomath_errno       ;;
3515             -g)                 echo -g3                        ;;
3516             -Wall)              echo -msg_enable level2         ;;
3517             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3518             -Wl,*)              echo $flag                      ;;
3519             -f*|-W*)                                            ;;
3520             *)                  echo $flag                      ;;
3521         esac
3522    done
3523 }
3524
3525 cparser_flags(){
3526     for flag; do
3527         case $flag in
3528             -Wno-switch)             echo -Wno-switch-enum ;;
3529             -Wno-format-zero-length) ;;
3530             -Wdisabled-optimization) ;;
3531             -Wno-pointer-sign)       echo -Wno-other ;;
3532             *)                       echo $flag ;;
3533         esac
3534     done
3535 }
3536
3537 msvc_common_flags(){
3538     for flag; do
3539         case $flag in
3540             # In addition to specifying certain flags under the compiler
3541             # specific filters, they must be specified here as well or else the
3542             # generic catch all at the bottom will print the original flag.
3543             -Wall)                ;;
3544             -std=c99)             ;;
3545             # Common flags
3546             -fomit-frame-pointer) ;;
3547             -g)                   echo -Z7 ;;
3548             -fno-math-errno)      ;;
3549             -fno-common)          ;;
3550             -fno-signed-zeros)    ;;
3551             -fPIC)                ;;
3552             -mthumb)              ;;
3553             -march=*)             ;;
3554             -lz)                  echo zlib.lib ;;
3555             -lavifil32)           echo vfw32.lib ;;
3556             -lavicap32)           echo vfw32.lib user32.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 [ -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
4871 die_license_disabled() {
4872     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4873 }