Merge commit '8fd361f53b3c17c1ae13a39e030c8fa3ab4d8f1f'
[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="h264_decoder"
2498 h264_mmal_encoder_deps="mmal"
2499 h264_mmal_hwaccel_deps="mmal"
2500 h264_qsv_hwaccel_deps="libmfx"
2501 h264_vaapi_hwaccel_deps="vaapi"
2502 h264_vaapi_hwaccel_select="h264_decoder"
2503 h264_vda_decoder_deps="vda"
2504 h264_vda_decoder_select="h264_decoder"
2505 h264_vda_hwaccel_deps="vda"
2506 h264_vda_hwaccel_select="h264_decoder"
2507 h264_vda_old_hwaccel_deps="vda"
2508 h264_vda_old_hwaccel_select="h264_decoder"
2509 h264_vdpau_decoder_deps="vdpau"
2510 h264_vdpau_decoder_select="h264_decoder"
2511 h264_vdpau_hwaccel_deps="vdpau"
2512 h264_vdpau_hwaccel_select="h264_decoder"
2513 h264_videotoolbox_hwaccel_deps="videotoolbox"
2514 h264_videotoolbox_hwaccel_select="h264_decoder"
2515 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2516 hevc_d3d11va_hwaccel_select="hevc_decoder"
2517 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2518 hevc_dxva2_hwaccel_select="hevc_decoder"
2519 hevc_qsv_hwaccel_deps="libmfx"
2520 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2521 hevc_vaapi_hwaccel_select="hevc_decoder"
2522 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2523 hevc_vdpau_hwaccel_select="hevc_decoder"
2524 mpeg_vdpau_decoder_deps="vdpau"
2525 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2526 mpeg_xvmc_hwaccel_deps="xvmc"
2527 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2528 mpeg1_vdpau_decoder_deps="vdpau"
2529 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2530 mpeg1_vdpau_hwaccel_deps="vdpau"
2531 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2532 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2533 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2534 mpeg1_xvmc_hwaccel_deps="xvmc"
2535 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2536 mpeg2_crystalhd_decoder_select="crystalhd"
2537 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2538 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2539 mpeg2_dxva2_hwaccel_deps="dxva2"
2540 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2541 mpeg2_mmal_decoder_deps="mmal"
2542 mpeg2_mmal_decoder_select="mpeg2video_decoder"
2543 mpeg2_mmal_hwaccel_deps="mmal"
2544 mpeg2_qsv_hwaccel_deps="libmfx"
2545 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2546 mpeg2_vaapi_hwaccel_deps="vaapi"
2547 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2548 mpeg2_vdpau_hwaccel_deps="vdpau"
2549 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2550 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2551 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2552 mpeg2_xvmc_hwaccel_deps="xvmc"
2553 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2554 mpeg4_crystalhd_decoder_select="crystalhd"
2555 mpeg4_vaapi_hwaccel_deps="vaapi"
2556 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2557 mpeg4_vdpau_decoder_deps="vdpau"
2558 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2559 mpeg4_vdpau_hwaccel_deps="vdpau"
2560 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2561 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2562 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2563 msmpeg4_crystalhd_decoder_select="crystalhd"
2564 vc1_crystalhd_decoder_select="crystalhd"
2565 vc1_d3d11va_hwaccel_deps="d3d11va"
2566 vc1_d3d11va_hwaccel_select="vc1_decoder"
2567 vc1_dxva2_hwaccel_deps="dxva2"
2568 vc1_dxva2_hwaccel_select="vc1_decoder"
2569 vc1_mmal_decoder_deps="mmal"
2570 vc1_mmal_decoder_select="vc1_decoder"
2571 vc1_mmal_hwaccel_deps="mmal"
2572 vc1_qsv_hwaccel_deps="libmfx"
2573 vc1_qsv_hwaccel_select="qsvdec_vc1"
2574 vc1_vaapi_hwaccel_deps="vaapi"
2575 vc1_vaapi_hwaccel_select="vc1_decoder"
2576 vc1_vdpau_decoder_deps="vdpau"
2577 vc1_vdpau_decoder_select="vc1_decoder"
2578 vc1_vdpau_hwaccel_deps="vdpau"
2579 vc1_vdpau_hwaccel_select="vc1_decoder"
2580 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2581 vp9_d3d11va_hwaccel_select="vp9_decoder"
2582 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2583 vp9_dxva2_hwaccel_select="vp9_decoder"
2584 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2585 vp9_vaapi_hwaccel_select="vp9_decoder"
2586 wmv3_crystalhd_decoder_select="crystalhd"
2587 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2588 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2589 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2590 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2591 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2592
2593 # parsers
2594 h264_parser_select="h264_decoder"
2595 hevc_parser_select="golomb"
2596 mpegvideo_parser_select="mpegvideo"
2597 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2598 vc1_parser_select="mpegvideo startcode vc1_decoder"
2599
2600 # bitstream_filters
2601 mjpeg2jpeg_bsf_select="jpegtables"
2602
2603 # external libraries
2604 chromaprint_muxer_deps="chromaprint"
2605 libaacplus_encoder_deps="libaacplus"
2606 libcelt_decoder_deps="libcelt"
2607 libdcadec_decoder_deps="libdcadec"
2608 libfaac_encoder_deps="libfaac"
2609 libfaac_encoder_select="audio_frame_queue"
2610 libfdk_aac_decoder_deps="libfdk_aac"
2611 libfdk_aac_encoder_deps="libfdk_aac"
2612 libfdk_aac_encoder_select="audio_frame_queue"
2613 libgme_demuxer_deps="libgme"
2614 libgsm_decoder_deps="libgsm"
2615 libgsm_encoder_deps="libgsm"
2616 libgsm_ms_decoder_deps="libgsm"
2617 libgsm_ms_encoder_deps="libgsm"
2618 libilbc_decoder_deps="libilbc"
2619 libilbc_encoder_deps="libilbc"
2620 libkvazaar_encoder_deps="libkvazaar"
2621 libmodplug_demuxer_deps="libmodplug"
2622 libmp3lame_encoder_deps="libmp3lame"
2623 libmp3lame_encoder_select="audio_frame_queue"
2624 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2625 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2626 libopencore_amrnb_encoder_select="audio_frame_queue"
2627 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2628 libopenh264_encoder_deps="libopenh264"
2629 libopenjpeg_decoder_deps="libopenjpeg"
2630 libopenjpeg_encoder_deps="libopenjpeg"
2631 libopus_decoder_deps="libopus"
2632 libopus_encoder_deps="libopus"
2633 libopus_encoder_select="audio_frame_queue"
2634 libschroedinger_decoder_deps="libschroedinger"
2635 libschroedinger_encoder_deps="libschroedinger"
2636 libshine_encoder_deps="libshine"
2637 libshine_encoder_select="audio_frame_queue"
2638 libspeex_decoder_deps="libspeex"
2639 libspeex_encoder_deps="libspeex"
2640 libspeex_encoder_select="audio_frame_queue"
2641 libtheora_encoder_deps="libtheora"
2642 libtwolame_encoder_deps="libtwolame"
2643 libutvideo_decoder_deps="libutvideo"
2644 libutvideo_encoder_deps="libutvideo"
2645 libvo_aacenc_encoder_deps="libvo_aacenc"
2646 libvo_aacenc_encoder_select="audio_frame_queue"
2647 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2648 libvorbis_decoder_deps="libvorbis"
2649 libvorbis_encoder_deps="libvorbis"
2650 libvorbis_encoder_select="audio_frame_queue"
2651 libvpx_vp8_decoder_deps="libvpx"
2652 libvpx_vp8_encoder_deps="libvpx"
2653 libvpx_vp9_decoder_deps="libvpx"
2654 libvpx_vp9_encoder_deps="libvpx"
2655 libwavpack_encoder_deps="libwavpack"
2656 libwebp_encoder_deps="libwebp"
2657 libwebp_anim_encoder_deps="libwebp"
2658 libx262_encoder_deps="libx262"
2659 libx264_encoder_deps="libx264"
2660 libx264rgb_encoder_deps="libx264"
2661 libx264rgb_encoder_select="libx264_encoder"
2662 libx265_encoder_deps="libx265"
2663 libxavs_encoder_deps="libxavs"
2664 libxvid_encoder_deps="libxvid"
2665 libzvbi_teletext_decoder_deps="libzvbi"
2666 nvenc_encoder_deps="nvenc"
2667 nvenc_h264_encoder_deps="nvenc"
2668 nvenc_hevc_encoder_deps="nvenc"
2669
2670 # demuxers / muxers
2671 ac3_demuxer_select="ac3_parser"
2672 asf_demuxer_select="riffdec"
2673 asf_o_demuxer_select="riffdec"
2674 asf_muxer_select="riffenc"
2675 asf_stream_muxer_select="asf_muxer"
2676 avi_demuxer_select="riffdec exif"
2677 avi_muxer_select="riffenc"
2678 avisynth_demuxer_deps="avisynth"
2679 avisynth_demuxer_select="riffdec"
2680 caf_demuxer_select="riffdec"
2681 dash_muxer_select="mp4_muxer"
2682 dirac_demuxer_select="dirac_parser"
2683 dts_demuxer_select="dca_parser"
2684 dtshd_demuxer_select="dca_parser"
2685 dv_demuxer_select="dvprofile"
2686 dv_muxer_select="dvprofile"
2687 dxa_demuxer_select="riffdec"
2688 eac3_demuxer_select="ac3_parser"
2689 f4v_muxer_select="mov_muxer"
2690 flac_demuxer_select="flac_parser"
2691 hds_muxer_select="flv_muxer"
2692 hls_muxer_select="mpegts_muxer"
2693 image2_alias_pix_demuxer_select="image2_demuxer"
2694 image2_brender_pix_demuxer_select="image2_demuxer"
2695 ipod_muxer_select="mov_muxer"
2696 ismv_muxer_select="mov_muxer"
2697 libnut_demuxer_deps="libnut"
2698 libnut_muxer_deps="libnut"
2699 matroska_audio_muxer_select="matroska_muxer"
2700 matroska_demuxer_select="riffdec"
2701 matroska_demuxer_suggest="bzlib lzo zlib"
2702 matroska_muxer_select="riffenc"
2703 mmf_muxer_select="riffenc"
2704 mov_demuxer_select="riffdec"
2705 mov_demuxer_suggest="zlib"
2706 mov_muxer_select="riffenc rtpenc_chain"
2707 mp3_demuxer_select="mpegaudio_parser"
2708 mp4_muxer_select="mov_muxer"
2709 mpegts_muxer_select="adts_muxer latm_muxer"
2710 mpegtsraw_demuxer_select="mpegts_demuxer"
2711 mxf_d10_muxer_select="mxf_muxer"
2712 mxf_opatom_muxer_select="mxf_muxer"
2713 nut_muxer_select="riffenc"
2714 nuv_demuxer_select="riffdec"
2715 oga_muxer_select="ogg_muxer"
2716 ogg_demuxer_select="dirac_parse"
2717 opus_muxer_select="ogg_muxer"
2718 psp_muxer_select="mov_muxer"
2719 rtp_demuxer_select="sdp_demuxer"
2720 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2721 rtsp_demuxer_select="http_protocol rtpdec"
2722 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2723 sap_demuxer_select="sdp_demuxer"
2724 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2725 sdp_demuxer_select="rtpdec"
2726 smoothstreaming_muxer_select="ismv_muxer"
2727 spdif_muxer_select="aac_parser"
2728 spx_muxer_select="ogg_muxer"
2729 swf_demuxer_suggest="zlib"
2730 tak_demuxer_select="tak_parser"
2731 tg2_muxer_select="mov_muxer"
2732 tgp_muxer_select="mov_muxer"
2733 vobsub_demuxer_select="mpegps_demuxer"
2734 w64_demuxer_select="wav_demuxer"
2735 w64_muxer_select="wav_muxer"
2736 wav_demuxer_select="riffdec"
2737 wav_muxer_select="riffenc"
2738 webm_muxer_select="riffenc"
2739 wtv_demuxer_select="riffdec"
2740 wtv_muxer_select="riffenc"
2741 xmv_demuxer_select="riffdec"
2742 xwma_demuxer_select="riffdec"
2743
2744 # indevs / outdevs
2745 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2746 alsa_outdev_deps="alsa_asoundlib_h"
2747 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2748 avfoundation_indev_select="avfoundation"
2749 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2750 caca_outdev_deps="libcaca"
2751 decklink_indev_deps="decklink pthreads"
2752 decklink_indev_extralibs="-lstdc++"
2753 decklink_outdev_deps="decklink pthreads"
2754 decklink_outdev_extralibs="-lstdc++"
2755 dshow_indev_deps="IBaseFilter"
2756 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2757 dv1394_indev_deps="dv1394"
2758 dv1394_indev_select="dv_demuxer"
2759 fbdev_indev_deps="linux_fb_h"
2760 fbdev_outdev_deps="linux_fb_h"
2761 gdigrab_indev_deps="CreateDIBSection"
2762 gdigrab_indev_extralibs="-lgdi32"
2763 gdigrab_indev_select="bmp_decoder"
2764 iec61883_indev_deps="libiec61883"
2765 jack_indev_deps="jack_jack_h sem_timedwait"
2766 lavfi_indev_deps="avfilter"
2767 libcdio_indev_deps="libcdio"
2768 libdc1394_indev_deps="libdc1394"
2769 libv4l2_indev_deps="libv4l2"
2770 openal_indev_deps="openal"
2771 opengl_outdev_deps="opengl"
2772 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2773 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2774 pulse_indev_deps="libpulse"
2775 pulse_outdev_deps="libpulse"
2776 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2777 qtkit_indev_select="qtkit"
2778 sdl_outdev_deps="sdl"
2779 sndio_indev_deps="sndio_h"
2780 sndio_outdev_deps="sndio_h"
2781 v4l_indev_deps="linux_videodev_h"
2782 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2783 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2784 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2785 vfwcap_indev_extralibs="-lavicap32"
2786 x11grab_indev_deps="x11grab"
2787 x11grab_xcb_indev_deps="libxcb"
2788 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2789 xv_outdev_extralibs="-lXv -lX11 -lXext"
2790
2791 # protocols
2792 async_protocol_deps="threads"
2793 bluray_protocol_deps="libbluray"
2794 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2795 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2796 ffrtmpcrypt_protocol_select="tcp_protocol"
2797 ffrtmphttp_protocol_deps="!librtmp_protocol"
2798 ffrtmphttp_protocol_select="http_protocol"
2799 ftp_protocol_select="tcp_protocol"
2800 gopher_protocol_select="network"
2801 http_protocol_select="tcp_protocol"
2802 httpproxy_protocol_select="tcp_protocol"
2803 https_protocol_select="tls_protocol"
2804 icecast_protocol_select="http_protocol"
2805 librtmp_protocol_deps="librtmp"
2806 librtmpe_protocol_deps="librtmp"
2807 librtmps_protocol_deps="librtmp"
2808 librtmpt_protocol_deps="librtmp"
2809 librtmpte_protocol_deps="librtmp"
2810 libsmbclient_protocol_deps="libsmbclient gplv3"
2811 libssh_protocol_deps="libssh"
2812 mmsh_protocol_select="http_protocol"
2813 mmst_protocol_select="network"
2814 rtmp_protocol_deps="!librtmp_protocol"
2815 rtmp_protocol_select="tcp_protocol"
2816 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2817 rtmps_protocol_deps="!librtmp_protocol"
2818 rtmps_protocol_select="tls_protocol"
2819 rtmpt_protocol_select="ffrtmphttp_protocol"
2820 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2821 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2822 rtp_protocol_select="udp_protocol"
2823 sctp_protocol_deps="struct_sctp_event_subscribe"
2824 sctp_protocol_select="network"
2825 srtp_protocol_select="rtp_protocol"
2826 tcp_protocol_select="network"
2827 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2828 tls_gnutls_protocol_select="tcp_protocol"
2829 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2830 tls_openssl_protocol_select="tcp_protocol"
2831 tls_schannel_protocol_deps="schannel"
2832 tls_schannel_protocol_select="tcp_protocol"
2833 tls_securetransport_protocol_deps="securetransport"
2834 tls_securetransport_protocol_select="tcp_protocol"
2835 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2836 udp_protocol_select="network"
2837 udplite_protocol_select="network"
2838 unix_protocol_deps="sys_un_h"
2839 unix_protocol_select="network"
2840
2841 # filters
2842 afftfilt_filter_deps="avcodec"
2843 afftfilt_filter_select="fft"
2844 amovie_filter_deps="avcodec avformat"
2845 aresample_filter_deps="swresample"
2846 ass_filter_deps="libass"
2847 asyncts_filter_deps="avresample"
2848 atempo_filter_deps="avcodec"
2849 atempo_filter_select="rdft"
2850 azmq_filter_deps="libzmq"
2851 blackframe_filter_deps="gpl"
2852 boxblur_filter_deps="gpl"
2853 bs2b_filter_deps="libbs2b"
2854 colormatrix_filter_deps="gpl"
2855 cover_rect_filter_deps="avcodec avformat gpl"
2856 cropdetect_filter_deps="gpl"
2857 delogo_filter_deps="gpl"
2858 deshake_filter_select="pixelutils"
2859 drawtext_filter_deps="libfreetype"
2860 ebur128_filter_deps="gpl"
2861 eq_filter_deps="gpl"
2862 fftfilt_filter_deps="avcodec"
2863 fftfilt_filter_select="rdft"
2864 find_rect_filter_deps="avcodec avformat gpl"
2865 flite_filter_deps="libflite"
2866 frei0r_filter_deps="frei0r dlopen"
2867 frei0r_src_filter_deps="frei0r dlopen"
2868 fspp_filter_deps="gpl"
2869 geq_filter_deps="gpl"
2870 histeq_filter_deps="gpl"
2871 hqdn3d_filter_deps="gpl"
2872 interlace_filter_deps="gpl"
2873 kerndeint_filter_deps="gpl"
2874 ladspa_filter_deps="ladspa dlopen"
2875 mcdeint_filter_deps="avcodec gpl"
2876 movie_filter_deps="avcodec avformat"
2877 mpdecimate_filter_deps="gpl"
2878 mpdecimate_filter_select="pixelutils"
2879 mptestsrc_filter_deps="gpl"
2880 negate_filter_deps="lut_filter"
2881 ocr_filter_deps="libtesseract"
2882 ocv_filter_deps="libopencv"
2883 owdenoise_filter_deps="gpl"
2884 pan_filter_deps="swresample"
2885 perspective_filter_deps="gpl"
2886 phase_filter_deps="gpl"
2887 pp7_filter_deps="gpl"
2888 pp_filter_deps="gpl postproc"
2889 pullup_filter_deps="gpl"
2890 removelogo_filter_deps="avcodec avformat swscale"
2891 repeatfields_filter_deps="gpl"
2892 resample_filter_deps="avresample"
2893 rubberband_filter_deps="librubberband"
2894 sab_filter_deps="gpl swscale"
2895 scale2ref_filter_deps="swscale"
2896 scale_filter_deps="swscale"
2897 select_filter_select="pixelutils"
2898 showcqt_filter_deps="avcodec avformat swscale"
2899 showcqt_filter_select="fft"
2900 showfreqs_filter_deps="avcodec"
2901 showfreqs_filter_select="fft"
2902 showspectrum_filter_deps="avcodec"
2903 showspectrum_filter_select="fft"
2904 showspectrumpic_filter_deps="avcodec"
2905 showspectrumpic_filter_select="fft"
2906 smartblur_filter_deps="gpl swscale"
2907 sofalizer_filter_deps="netcdf avcodec"
2908 sofalizer_filter_select="fft"
2909 spectrumsynth_filter_deps="avcodec"
2910 spectrumsynth_filter_select="fft"
2911 spp_filter_deps="gpl avcodec"
2912 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2913 stereo3d_filter_deps="gpl"
2914 subtitles_filter_deps="avformat avcodec libass"
2915 super2xsai_filter_deps="gpl"
2916 pixfmts_super2xsai_test_deps="super2xsai_filter"
2917 tinterlace_filter_deps="gpl"
2918 tinterlace_merge_test_deps="tinterlace_filter"
2919 tinterlace_pad_test_deps="tinterlace_filter"
2920 uspp_filter_deps="gpl avcodec"
2921 vidstabdetect_filter_deps="libvidstab"
2922 vidstabtransform_filter_deps="libvidstab"
2923 zmq_filter_deps="libzmq"
2924 zoompan_filter_deps="swscale"
2925 zscale_filter_deps="libzimg"
2926
2927 # examples
2928 avcodec_example_deps="avcodec avutil"
2929 avio_dir_cmd="avformat avutil"
2930 avio_reading="avformat avcodec avutil"
2931 decoding_encoding_example_deps="avcodec avformat avutil"
2932 demuxing_decoding_example_deps="avcodec avformat avutil"
2933 extract_mvs_example_deps="avcodec avformat avutil"
2934 filter_audio_example_deps="avfilter avutil"
2935 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2936 filtering_video_example_deps="avfilter avcodec avformat avutil"
2937 metadata_example_deps="avformat avutil"
2938 muxing_example_deps="avcodec avformat avutil swscale"
2939 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2940 remuxing_example_deps="avcodec avformat avutil"
2941 resampling_audio_example_deps="avutil swresample"
2942 scaling_video_example_deps="avutil swscale"
2943 transcode_aac_example_deps="avcodec avformat swresample"
2944 transcoding_example_deps="avfilter avcodec avformat avutil"
2945
2946 # libraries, in linking order
2947 avcodec_deps="avutil"
2948 avdevice_deps="avformat avcodec avutil"
2949 avfilter_deps="avutil"
2950 avformat_deps="avcodec avutil"
2951 avresample_deps="avutil"
2952 postproc_deps="avutil gpl"
2953 swresample_deps="avutil"
2954 swscale_deps="avutil"
2955
2956 # programs
2957 ffmpeg_deps="avcodec avfilter avformat swresample"
2958 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2959                null_filter
2960                setpts_filter trim_filter"
2961 ffplay_deps="avcodec avformat swscale swresample sdl"
2962 ffplay_libs='$sdl_libs'
2963 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2964 ffprobe_deps="avcodec avformat"
2965 ffserver_deps="avformat fork sarestart"
2966 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2967
2968 # documentation
2969 podpages_deps="perl"
2970 manpages_deps="perl pod2man"
2971 htmlpages_deps="perl"
2972 htmlpages_deps_any="makeinfo_html texi2html"
2973 txtpages_deps="perl makeinfo"
2974 doc_deps_any="manpages htmlpages podpages txtpages"
2975
2976 # default parameters
2977
2978 logfile="config.log"
2979
2980 # installation paths
2981 prefix_default="/usr/local"
2982 bindir_default='${prefix}/bin'
2983 datadir_default='${prefix}/share/ffmpeg'
2984 docdir_default='${prefix}/share/doc/ffmpeg'
2985 incdir_default='${prefix}/include'
2986 libdir_default='${prefix}/lib'
2987 mandir_default='${prefix}/share/man'
2988
2989 # toolchain
2990 ar_default="ar"
2991 cc_default="gcc"
2992 cxx_default="g++"
2993 host_cc_default="gcc"
2994 cp_f="cp -f"
2995 doxygen_default="doxygen"
2996 install="install"
2997 ln_s="ln -s -f"
2998 nm_default="nm -g"
2999 objformat="elf"
3000 pkg_config_default=pkg-config
3001 ranlib_default="ranlib"
3002 strip_default="strip"
3003 yasmexe_default="yasm"
3004 windres_default="windres"
3005
3006 # OS
3007 target_os_default=$(tolower $(uname -s))
3008 host_os=$target_os_default
3009
3010 # machine
3011 if test "$target_os_default" = aix; then
3012     arch_default=$(uname -p)
3013     strip_default="strip -X32_64"
3014 else
3015     arch_default=$(uname -m)
3016 fi
3017 cpu="generic"
3018 intrinsics="none"
3019
3020 # configurable options
3021 enable $PROGRAM_LIST
3022 enable $DOCUMENT_LIST
3023 enable $EXAMPLE_LIST
3024 enable $(filter_out avresample $LIBRARY_LIST)
3025 enable stripping
3026
3027 enable asm
3028 enable debug
3029 enable doc
3030 enable faan faandct faanidct
3031 enable optimizations
3032 enable runtime_cpudetect
3033 enable safe_bitstream_reader
3034 enable static
3035 enable swscale_alpha
3036 enable valgrind_backtrace
3037
3038 sws_max_filter_size_default=256
3039 set_default sws_max_filter_size
3040
3041 # Enable hwaccels by default.
3042 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3043 enable xlib
3044
3045 # build settings
3046 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3047 LIBPREF="lib"
3048 LIBSUF=".a"
3049 FULLNAME='$(NAME)$(BUILDSUF)'
3050 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3051 SLIBPREF="lib"
3052 SLIBSUF=".so"
3053 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3054 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3055 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3056 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3057 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3058 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3059
3060 asflags_filter=echo
3061 cflags_filter=echo
3062 ldflags_filter=echo
3063
3064 AS_C='-c'
3065 AS_O='-o $@'
3066 CC_C='-c'
3067 CC_E='-E -o $@'
3068 CC_O='-o $@'
3069 CXX_C='-c'
3070 CXX_O='-o $@'
3071 OBJCC_C='-c'
3072 OBJCC_E='-E -o $@'
3073 OBJCC_O='-o $@'
3074 LD_O='-o $@'
3075 LD_LIB='-l%'
3076 LD_PATH='-L'
3077 HOSTCC_C='-c'
3078 HOSTCC_E='-E -o $@'
3079 HOSTCC_O='-o $@'
3080 HOSTLD_O='-o $@'
3081
3082 host_libs='-lm'
3083 host_cflags_filter=echo
3084 host_ldflags_filter=echo
3085
3086 target_path='$(CURDIR)'
3087
3088 # since the object filename is not given with the -MM flag, the compiler
3089 # is only able to print the basename, and we must add the path ourselves
3090 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3091 DEPFLAGS='-MM'
3092
3093 # find source path
3094 if test -f configure; then
3095     source_path=.
3096 else
3097     source_path=$(cd $(dirname "$0"); pwd)
3098     case "$source_path" in
3099         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3100     esac
3101     test -e "$source_path/config.h" &&
3102         die "Out of tree builds are impossible with config.h in source dir."
3103 fi
3104
3105 for v in "$@"; do
3106     r=${v#*=}
3107     l=${v%"$r"}
3108     r=$(sh_quote "$r")
3109     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3110 done
3111
3112 find_things(){
3113     thing=$1
3114     pattern=$2
3115     file=$source_path/$3
3116     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3117 }
3118
3119 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3120 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3121 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3122 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3123 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3124 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3125 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3126 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3127 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3128 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3129 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3130
3131 ALL_COMPONENTS="
3132     $BSF_LIST
3133     $DECODER_LIST
3134     $DEMUXER_LIST
3135     $ENCODER_LIST
3136     $FILTER_LIST
3137     $HWACCEL_LIST
3138     $INDEV_LIST
3139     $MUXER_LIST
3140     $OUTDEV_LIST
3141     $PARSER_LIST
3142     $PROTOCOL_LIST
3143 "
3144
3145 for n in $COMPONENT_LIST; do
3146     v=$(toupper ${n%s})_LIST
3147     eval enable \$$v
3148     eval ${n}_if_any="\$$v"
3149 done
3150
3151 enable $ARCH_EXT_LIST
3152
3153 die_unknown(){
3154     echo "Unknown option \"$1\"."
3155     echo "See $0 --help for available options."
3156     exit 1
3157 }
3158
3159 print_in_columns() {
3160     cols=$(expr $ncols / 24)
3161     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3162 }
3163
3164 show_list() {
3165     suffix=_$1
3166     shift
3167     echo $* | sed s/$suffix//g | print_in_columns
3168     exit 0
3169 }
3170
3171 rand_list(){
3172     IFS=', '
3173     set -- $*
3174     unset IFS
3175     for thing; do
3176         comp=${thing%:*}
3177         prob=${thing#$comp}
3178         prob=${prob#:}
3179         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3180         echo "prob ${prob:-0.5}"
3181         printf '%s\n' $comp
3182     done
3183 }
3184
3185 do_random(){
3186     action=$1
3187     shift
3188     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3189     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3190 }
3191
3192 for opt do
3193     optval="${opt#*=}"
3194     case "$opt" in
3195         --extra-ldflags=*)
3196             add_ldflags $optval
3197         ;;
3198         --extra-ldexeflags=*)
3199             add_ldexeflags $optval
3200         ;;
3201         --extra-ldlibflags=*)
3202             add_ldlibflags $optval
3203         ;;
3204         --extra-libs=*)
3205             add_extralibs $optval
3206         ;;
3207         --disable-devices)
3208             disable $INDEV_LIST $OUTDEV_LIST
3209         ;;
3210         --enable-debug=*)
3211             debuglevel="$optval"
3212         ;;
3213         --disable-programs)
3214             disable $PROGRAM_LIST
3215         ;;
3216         --disable-everything)
3217             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3218         ;;
3219         --disable-all)
3220             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3221             disable $LIBRARY_LIST $PROGRAM_LIST doc
3222             enable avutil
3223         ;;
3224         --enable-random|--disable-random)
3225             action=${opt%%-random}
3226             do_random ${action#--} $COMPONENT_LIST
3227         ;;
3228         --enable-random=*|--disable-random=*)
3229             action=${opt%%-random=*}
3230             do_random ${action#--} $optval
3231         ;;
3232         --enable-*=*|--disable-*=*)
3233             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3234             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3235             eval list=\$$(toupper $thing)_LIST
3236             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3237             list=$(filter "$name" $list)
3238             [ "$list" = "" ] && warn "Option $opt did not match anything"
3239             $action $list
3240         ;;
3241         --enable-?*|--disable-?*)
3242             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3243             if is_in $option $COMPONENT_LIST; then
3244                 test $action = disable && action=unset
3245                 eval $action \$$(toupper ${option%s})_LIST
3246             elif is_in $option $CMDLINE_SELECT; then
3247                 $action $option
3248             else
3249                 die_unknown $opt
3250             fi
3251         ;;
3252         --list-*)
3253             NAME="${opt#--list-}"
3254             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3255             NAME=${NAME%s}
3256             eval show_list $NAME \$$(toupper $NAME)_LIST
3257         ;;
3258         --help|-h) show_help
3259         ;;
3260         --fatal-warnings) enable fatal_warnings
3261         ;;
3262         *)
3263             optname="${opt%%=*}"
3264             optname="${optname#--}"
3265             optname=$(echo "$optname" | sed 's/-/_/g')
3266             if is_in $optname $CMDLINE_SET; then
3267                 eval $optname='$optval'
3268             elif is_in $optname $CMDLINE_APPEND; then
3269                 append $optname "$optval"
3270             else
3271                 die_unknown $opt
3272             fi
3273         ;;
3274     esac
3275 done
3276
3277 for e in $env; do
3278     eval "export $e"
3279 done
3280
3281 disabled logging && logfile=/dev/null
3282
3283 # Disable all the library-specific components if the library itself
3284 # is disabled, see AVCODEC_LIST and following _LIST variables.
3285
3286 disable_components(){
3287     disabled ${1} && disable $(
3288         eval components="\$$(toupper ${1})_COMPONENTS"
3289         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3290     )
3291 }
3292
3293 map 'disable_components $v' $LIBRARY_LIST
3294
3295 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3296 set >> $logfile
3297
3298 test -n "$valgrind" && toolchain="valgrind-memcheck"
3299
3300 case "$toolchain" in
3301     clang-asan)
3302         cc_default="clang"
3303         add_cflags  -fsanitize=address
3304         add_ldflags -fsanitize=address
3305     ;;
3306     clang-tsan)
3307         cc_default="clang"
3308         add_cflags  -fsanitize=thread -pie
3309         add_ldflags -fsanitize=thread -pie
3310     ;;
3311     clang-usan)
3312         cc_default="clang"
3313         add_cflags  -fsanitize=undefined
3314         add_ldflags -fsanitize=undefined
3315     ;;
3316     gcc-asan)
3317         cc_default="gcc"
3318         add_cflags  -fsanitize=address
3319         add_ldflags -fsanitize=address
3320     ;;
3321     gcc-tsan)
3322         cc_default="gcc"
3323         add_cflags  -fsanitize=thread -pie -fPIC
3324         add_ldflags -fsanitize=thread -pie -fPIC
3325     ;;
3326     gcc-usan)
3327         cc_default="gcc"
3328         add_cflags  -fsanitize=undefined
3329         add_ldflags -fsanitize=undefined
3330     ;;
3331     valgrind-massif)
3332         target_exec_default=${valgrind:-"valgrind"}
3333         target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3334     ;;
3335     valgrind-memcheck)
3336         target_exec_default=${valgrind:-"valgrind"}
3337         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3338     ;;
3339     msvc)
3340         # Check whether the current MSVC version needs the C99 converter.
3341         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3342         # support enough of C99 to build ffmpeg. Default to the new
3343         # behaviour if the regexp was unable to match anything, since this
3344         # successfully parses the version number of existing supported
3345         # versions that require the converter (MSVC 2010 and 2012).
3346         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3347         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3348             cc_default="cl"
3349         else
3350             cc_default="c99wrap cl"
3351         fi
3352         ld_default="$source_path/compat/windows/mslink"
3353         nm_default="dumpbin -symbols"
3354         ar_default="lib"
3355         case "$arch" in
3356         arm*)
3357             as_default="armasm"
3358             ;;
3359         esac
3360         target_os_default="win32"
3361         # Use a relative path for TMPDIR. This makes sure all the
3362         # ffconf temp files are written with a relative path, avoiding
3363         # issues with msys/win32 path conversion for MSVC parameters
3364         # such as -Fo<file> or -out:<file>.
3365         TMPDIR=.
3366     ;;
3367     icl)
3368         cc_default="icl"
3369         ld_default="xilink"
3370         nm_default="dumpbin -symbols"
3371         ar_default="xilib"
3372         target_os_default="win32"
3373         TMPDIR=.
3374     ;;
3375     gcov)
3376         add_cflags  -fprofile-arcs -ftest-coverage
3377         add_ldflags -fprofile-arcs -ftest-coverage
3378     ;;
3379     hardened)
3380         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3381         add_cflags   -fno-strict-overflow -fstack-protector-all
3382         add_ldflags  -Wl,-z,relro -Wl,-z,now
3383     ;;
3384     ?*)
3385         die "Unknown toolchain $toolchain"
3386     ;;
3387 esac
3388
3389 test -n "$cross_prefix" && enable cross_compile
3390
3391 if enabled cross_compile; then
3392     test -n "$arch" && test -n "$target_os" ||
3393         die "Must specify target arch and OS when cross-compiling"
3394 fi
3395
3396 ar_default="${cross_prefix}${ar_default}"
3397 cc_default="${cross_prefix}${cc_default}"
3398 cxx_default="${cross_prefix}${cxx_default}"
3399 nm_default="${cross_prefix}${nm_default}"
3400 pkg_config_default="${cross_prefix}${pkg_config_default}"
3401 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3402     ranlib_default="${cross_prefix}${ranlib_default} -D"
3403 else
3404     ranlib_default="${cross_prefix}${ranlib_default}"
3405 fi
3406 strip_default="${cross_prefix}${strip_default}"
3407 windres_default="${cross_prefix}${windres_default}"
3408
3409 sysinclude_default="${sysroot}/usr/include"
3410
3411 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3412     target_exec target_os yasmexe
3413 enabled cross_compile || host_cc_default=$cc
3414 set_default host_cc
3415
3416 pkg_config_fail_message=""
3417 if ! $pkg_config --version >/dev/null 2>&1; then
3418     warn "$pkg_config not found, library detection may fail."
3419     pkg_config=false
3420 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3421     pkg_config_fail_message="
3422 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3423 fi
3424
3425 if test $doxygen != $doxygen_default && \
3426   ! $doxygen --version >/dev/null 2>&1; then
3427     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3428 fi
3429
3430 exesuf() {
3431     case $1 in
3432         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3433     esac
3434 }
3435
3436 EXESUF=$(exesuf $target_os)
3437 HOSTEXESUF=$(exesuf $host_os)
3438
3439 # set temporary file name
3440 : ${TMPDIR:=$TEMPDIR}
3441 : ${TMPDIR:=$TMP}
3442 : ${TMPDIR:=/tmp}
3443
3444 if [ -n "$tempprefix" ] ; then
3445     mktemp(){
3446         echo $tempprefix.${HOSTNAME}.${UID}
3447     }
3448 elif ! check_cmd mktemp -u XXXXXX; then
3449     # simple replacement for missing mktemp
3450     # NOT SAFE FOR GENERAL USE
3451     mktemp(){
3452         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3453     }
3454 fi
3455
3456 tmpfile(){
3457     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3458         (set -C; exec > $tmp) 2>/dev/null ||
3459         die "Unable to create temporary file in $TMPDIR."
3460     append TMPFILES $tmp
3461     eval $1=$tmp
3462 }
3463
3464 trap 'rm -f -- $TMPFILES' EXIT
3465
3466 tmpfile TMPASM .asm
3467 tmpfile TMPC   .c
3468 tmpfile TMPCPP .cpp
3469 tmpfile TMPE   $EXESUF
3470 tmpfile TMPH   .h
3471 tmpfile TMPM   .m
3472 tmpfile TMPO   .o
3473 tmpfile TMPS   .S
3474 tmpfile TMPSH  .sh
3475 tmpfile TMPV   .ver
3476
3477 unset -f mktemp
3478
3479 chmod +x $TMPE
3480
3481 # make sure we can execute files in $TMPDIR
3482 cat > $TMPSH 2>> $logfile <<EOF
3483 #! /bin/sh
3484 EOF
3485 chmod +x $TMPSH >> $logfile 2>&1
3486 if ! $TMPSH >> $logfile 2>&1; then
3487     cat <<EOF
3488 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3489 variable to another directory and make sure that it is not mounted noexec.
3490 EOF
3491     die "Sanity test failed."
3492 fi
3493
3494 armasm_flags(){
3495     for flag; do
3496         case $flag in
3497             # Filter out MSVC cl.exe options from cflags that shouldn't
3498             # be passed to gas-preprocessor
3499             -M[TD]*)                                            ;;
3500             *)                  echo $flag                      ;;
3501         esac
3502    done
3503 }
3504
3505 ccc_flags(){
3506     for flag; do
3507         case $flag in
3508             -std=c99)           echo -c99                       ;;
3509             -mcpu=*)            echo -arch ${flag#*=}           ;;
3510             -mieee)             echo -ieee                      ;;
3511             -O*|-fast)          echo $flag                      ;;
3512             -fno-math-errno)    echo -assume nomath_errno       ;;
3513             -g)                 echo -g3                        ;;
3514             -Wall)              echo -msg_enable level2         ;;
3515             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3516             -Wl,*)              echo $flag                      ;;
3517             -f*|-W*)                                            ;;
3518             *)                  echo $flag                      ;;
3519         esac
3520    done
3521 }
3522
3523 cparser_flags(){
3524     for flag; do
3525         case $flag in
3526             -Wno-switch)             echo -Wno-switch-enum ;;
3527             -Wno-format-zero-length) ;;
3528             -Wdisabled-optimization) ;;
3529             -Wno-pointer-sign)       echo -Wno-other ;;
3530             *)                       echo $flag ;;
3531         esac
3532     done
3533 }
3534
3535 msvc_common_flags(){
3536     for flag; do
3537         case $flag in
3538             # In addition to specifying certain flags under the compiler
3539             # specific filters, they must be specified here as well or else the
3540             # generic catch all at the bottom will print the original flag.
3541             -Wall)                ;;
3542             -std=c99)             ;;
3543             # Common flags
3544             -fomit-frame-pointer) ;;
3545             -g)                   echo -Z7 ;;
3546             -fno-math-errno)      ;;
3547             -fno-common)          ;;
3548             -fno-signed-zeros)    ;;
3549             -fPIC)                ;;
3550             -mthumb)              ;;
3551             -march=*)             ;;
3552             -lz)                  echo zlib.lib ;;
3553             -lavifil32)           echo vfw32.lib ;;
3554             -lavicap32)           echo vfw32.lib user32.lib ;;
3555             -l*)                  echo ${flag#-l}.lib ;;
3556             -LARGEADDRESSAWARE)   echo $flag ;;
3557             -L*)                  echo -libpath:${flag#-L} ;;
3558             *)                    echo $flag ;;
3559         esac
3560     done
3561 }
3562
3563 msvc_flags(){
3564     msvc_common_flags "$@"
3565     for flag; do
3566         case $flag in
3567             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3568                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3569                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3570                                        -wd4307 \
3571                                        -wd4273 -wd4554 -wd4701 ;;
3572         esac
3573     done
3574 }
3575
3576 icl_flags(){
3577     msvc_common_flags "$@"
3578     for flag; do
3579         case $flag in
3580             # Despite what Intel's documentation says -Wall, which is supported
3581             # on Windows, does enable remarks so disable them here.
3582             -Wall)                echo $flag -Qdiag-disable:remark ;;
3583             -std=c99)             echo -Qstd=c99 ;;
3584             -flto)                echo -ipo ;;
3585         esac
3586     done
3587 }
3588
3589 icc_flags(){
3590     for flag; do
3591         case $flag in
3592             -flto)                echo -ipo ;;
3593             *)                    echo $flag ;;
3594         esac
3595     done
3596 }
3597
3598 pgi_flags(){
3599     for flag; do
3600         case $flag in
3601             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3602             -fomit-frame-pointer) echo -Mnoframe ;;
3603             -g)                   echo -gopt ;;
3604             *)                    echo $flag ;;
3605         esac
3606     done
3607 }
3608
3609 suncc_flags(){
3610     for flag; do
3611         case $flag in
3612             -march=*|-mcpu=*)
3613                 case "${flag#*=}" in
3614                     native)                   echo -xtarget=native       ;;
3615                     v9|niagara)               echo -xarch=sparc          ;;
3616                     ultrasparc)               echo -xarch=sparcvis       ;;
3617                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3618                     i586|pentium)             echo -xchip=pentium        ;;
3619                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3620                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3621                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3622                     pentium4*)          echo -xtarget=pentium4           ;;
3623                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3624                     *-sse3)             echo -xarch=sse3                 ;;
3625                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3626                     bonnell)                   echo -xarch=ssse3         ;;
3627                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3628                     westmere)                  echo -xtarget=westmere    ;;
3629                     silvermont)                echo -xarch=sse4_2        ;;
3630                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3631                     core-avx*|ivybridge|haswell|broadwell)
3632                                                echo -xarch=avx           ;;
3633                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3634                     btver1)                    echo -xarch=amdsse4a      ;;
3635                     btver2|bdver*)             echo -xarch=avx           ;;
3636                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3637                     k8|opteron|athlon64|athlon-fx)
3638                                                echo -xarch=sse2a         ;;
3639                     athlon*)                   echo -xarch=pentium_proa  ;;
3640                 esac
3641                 ;;
3642             -std=c99)             echo -xc99              ;;
3643             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3644             -fPIC)                echo -KPIC -xcode=pic32 ;;
3645             -W*,*)                echo $flag              ;;
3646             -f*-*|-W*|-mimpure-text)                      ;;
3647             -shared)              echo -G                 ;;
3648             *)                    echo $flag              ;;
3649         esac
3650     done
3651 }
3652
3653 tms470_flags(){
3654     for flag; do
3655         case $flag in
3656             -march=*|-mcpu=*)
3657                 case "${flag#*=}" in
3658                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3659                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3660                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3661                     armv6*|arm11*)          echo -mv=6   ;;
3662                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3663                                             echo -mv=5e  ;;
3664                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3665                 esac
3666                 ;;
3667             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3668             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3669             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3670             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3671             -msoft-float)   echo --float_support=vfplib       ;;
3672             -O[0-3]|-mf=*)  echo $flag                        ;;
3673             -g)             echo -g -mn                       ;;
3674             -pds=*)         echo $flag                        ;;
3675             -D*|-I*)        echo $flag                        ;;
3676             --gcc|--abi=*)  echo $flag                        ;;
3677             -me)            echo $flag                        ;;
3678         esac
3679     done
3680 }
3681
3682 probe_cc(){
3683     pfx=$1
3684     _cc=$2
3685     first=$3
3686
3687     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3688     unset _ld_o _ldflags _ld_lib _ld_path
3689     unset _depflags _DEPCMD _DEPFLAGS
3690     _flags_filter=echo
3691
3692     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3693         true # no-op to avoid reading stdin in following checks
3694     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3695         _type=llvm_gcc
3696         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3697         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3698         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3699         _cflags_speed='-O3'
3700         _cflags_size='-Os'
3701     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3702         _type=gcc
3703         gcc_version=$($_cc --version | head -n1)
3704         gcc_basever=$($_cc -dumpversion)
3705         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3706         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3707         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3708         case $gcc_basever in
3709             2) ;;
3710             2.*) ;;
3711             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3712         esac
3713         if [ "$first" = true ]; then
3714             case $gcc_basever in
3715                 4.2*)
3716                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3717             esac
3718         fi
3719         _cflags_speed='-O3'
3720         _cflags_size='-Os'
3721     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3722         _type=icc
3723         _ident=$($_cc --version | head -n1)
3724         _depflags='-MMD'
3725         _cflags_speed='-O3'
3726         _cflags_size='-Os'
3727         _cflags_noopt='-O1'
3728         _flags_filter=icc_flags
3729     elif $_cc -v 2>&1 | grep -q xlc; then
3730         _type=xlc
3731         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3732         _cflags_speed='-O5'
3733         _cflags_size='-O5 -qcompact'
3734     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3735         _type=ccc
3736         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3737         _DEPFLAGS='-M'
3738         _cflags_speed='-fast'
3739         _cflags_size='-O1'
3740         _flags_filter=ccc_flags
3741     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3742         test -d "$sysroot" || die "No valid sysroot specified."
3743         _type=armcc
3744         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3745         armcc_conf="$PWD/armcc.conf"
3746         $_cc --arm_linux_configure                 \
3747              --arm_linux_config_file="$armcc_conf" \
3748              --configure_sysroot="$sysroot"        \
3749              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3750              die "Error creating armcc configuration file."
3751         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3752         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3753         as_default="${cross_prefix}gcc"
3754         _depflags='-MMD'
3755         _cflags_speed='-O3'
3756         _cflags_size='-Os'
3757     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3758         _type=tms470
3759         _ident=$($_cc -version | head -n1 | tr -s ' ')
3760         _flags='--gcc --abi=eabi -me'
3761         _cc_e='-ppl -fe=$@'
3762         _cc_o='-fe=$@'
3763         _depflags='-ppa -ppd=$(@:.o=.d)'
3764         _cflags_speed='-O3 -mf=5'
3765         _cflags_size='-O3 -mf=2'
3766         _flags_filter=tms470_flags
3767     elif $_cc -v 2>&1 | grep -q clang; then
3768         _type=clang
3769         _ident=$($_cc --version 2>/dev/null | head -n1)
3770         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3771         _cflags_speed='-O3'
3772         _cflags_size='-Os'
3773     elif $_cc -V 2>&1 | grep -q Sun; then
3774         _type=suncc
3775         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3776         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3777         _DEPFLAGS='-xM1 -xc99'
3778         _ldflags='-std=c99'
3779         _cflags_speed='-O5'
3780         _cflags_size='-O5 -xspace'
3781         _flags_filter=suncc_flags
3782     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3783         _type=pathscale
3784         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3785         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3786         _cflags_speed='-O2'
3787         _cflags_size='-Os'
3788         _flags_filter='filter_out -Wdisabled-optimization'
3789     elif $_cc -v 2>&1 | grep -q Open64; then
3790         _type=open64
3791         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3792         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3793         _cflags_speed='-O2'
3794         _cflags_size='-Os'
3795         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3796     elif $_cc -V 2>&1 | grep -q Portland; then
3797         _type=pgi
3798         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3799         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3800         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3801         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3802         _cflags_noopt="-O"
3803         _flags_filter=pgi_flags
3804     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3805         _type=armasm
3806         _ident=$($_cc | head -n1)
3807         # 4509: "This form of conditional instruction is deprecated"
3808         _flags="-nologo -ignore 4509"
3809         _flags_filter=armasm_flags
3810     elif $_cc 2>&1 | grep -q Intel; then
3811         _type=icl
3812         _ident=$($_cc 2>&1 | head -n1)
3813         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3814         # Not only is O3 broken on 13.x+ but it is slower on all previous
3815         # versions (tested) as well.
3816         _cflags_speed="-O2"
3817         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3818         if $_cc 2>&1 | grep -q Linker; then
3819             _ld_o='-out:$@'
3820         else
3821             _ld_o='-Fe$@'
3822         fi
3823         _cc_o='-Fo$@'
3824         _cc_e='-P'
3825         _flags_filter=icl_flags
3826         _ld_lib='lib%.a'
3827         _ld_path='-libpath:'
3828         # -Qdiag-error to make icl error when seeing certain unknown arguments
3829         _flags='-nologo -Qdiag-error:4044,10157'
3830         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3831         # with MSVC which enables it by default.
3832         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3833         disable stripping
3834     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3835         _type=msvc
3836         _ident=$($_cc 2>&1 | head -n1)
3837         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3838         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3839         _cflags_speed="-O2"
3840         _cflags_size="-O1"
3841         if $_cc -nologo- 2>&1 | grep -q Linker; then
3842             _ld_o='-out:$@'
3843         else
3844             _ld_o='-Fe$@'
3845         fi
3846         _cc_o='-Fo$@'
3847         _cc_e='-P -Fi$@'
3848         _flags_filter=msvc_flags
3849         _ld_lib='lib%.a'
3850         _ld_path='-libpath:'
3851         _flags='-nologo'
3852         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3853         disable stripping
3854     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3855         _type=cparser
3856         _ident=$($_cc --version | head -n1)
3857         _depflags='-MMD'
3858         _cflags_speed='-O4'
3859         _cflags_size='-O2'
3860         _flags_filter=cparser_flags
3861     fi
3862
3863     eval ${pfx}_type=\$_type
3864     eval ${pfx}_ident=\$_ident
3865 }
3866
3867 set_ccvars(){
3868     eval ${1}_C=\${_cc_c-\${${1}_C}}
3869     eval ${1}_E=\${_cc_e-\${${1}_E}}
3870     eval ${1}_O=\${_cc_o-\${${1}_O}}
3871
3872     if [ -n "$_depflags" ]; then
3873         eval ${1}_DEPFLAGS=\$_depflags
3874     else
3875         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3876         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3877         eval DEP${1}FLAGS=\$_flags
3878     fi
3879 }
3880
3881 probe_cc cc "$cc" "true"
3882 cflags_filter=$_flags_filter
3883 cflags_speed=$_cflags_speed
3884 cflags_size=$_cflags_size
3885 cflags_noopt=$_cflags_noopt
3886 add_cflags $_flags $_cflags
3887 cc_ldflags=$_ldflags
3888 set_ccvars CC
3889
3890 probe_cc hostcc "$host_cc"
3891 host_cflags_filter=$_flags_filter
3892 add_host_cflags  $_flags $_cflags
3893 set_ccvars HOSTCC
3894
3895 test -n "$cc_type" && enable $cc_type ||
3896     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3897
3898 : ${as_default:=$cc}
3899 : ${objcc_default:=$cc}
3900 : ${dep_cc_default:=$cc}
3901 : ${ld_default:=$cc}
3902 : ${host_ld_default:=$host_cc}
3903 set_default ar as objcc dep_cc ld host_ld windres
3904
3905 probe_cc as "$as"
3906 asflags_filter=$_flags_filter
3907 add_asflags $_flags $_cflags
3908 set_ccvars AS
3909
3910 probe_cc objcc "$objcc"
3911 objcflags_filter=$_flags_filter
3912 add_objcflags $_flags $_cflags
3913 set_ccvars OBJC
3914
3915 probe_cc ld "$ld"
3916 ldflags_filter=$_flags_filter
3917 add_ldflags $_flags $_ldflags
3918 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3919 LD_O=${_ld_o-$LD_O}
3920 LD_LIB=${_ld_lib-$LD_LIB}
3921 LD_PATH=${_ld_path-$LD_PATH}
3922
3923 probe_cc hostld "$host_ld"
3924 host_ldflags_filter=$_flags_filter
3925 add_host_ldflags $_flags $_ldflags
3926 HOSTLD_O=${_ld_o-$HOSTLD_O}
3927
3928 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3929     probe_cc depcc "$dep_cc"
3930     CCDEP=${_DEPCMD:-$DEPCMD}
3931     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3932     DEPCCFLAGS=$_flags
3933 fi
3934
3935 if $ar 2>&1 | grep -q Microsoft; then
3936     arflags="-nologo"
3937     ar_o='-out:$@'
3938 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3939     arflags="rq"
3940     ar_o='$@'
3941 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3942     arflags='-Xany -r -c'
3943     ar_o='$@'
3944 elif $ar 2>&1 | grep -q "\[D\] "; then
3945     arflags="rcD"
3946     ar_o='$@'
3947 else
3948     arflags="rc"
3949     ar_o='$@'
3950 fi
3951
3952 add_cflags $extra_cflags
3953 add_cxxflags $extra_cxxflags
3954 add_objcflags $extra_objcflags
3955 add_asflags $extra_cflags
3956
3957 if test -n "$sysroot"; then
3958     case "$cc_type" in
3959         gcc|llvm_gcc|clang)
3960             add_cppflags --sysroot="$sysroot"
3961             add_ldflags --sysroot="$sysroot"
3962 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3963             add_cppflags -isysroot "$sysroot"
3964             add_ldflags -isysroot "$sysroot"
3965         ;;
3966         tms470)
3967             add_cppflags -I"$sysinclude"
3968             add_ldflags  --sysroot="$sysroot"
3969         ;;
3970     esac
3971 fi
3972
3973 if test "$cpu" = host; then
3974     enabled cross_compile &&
3975         die "--cpu=host makes no sense when cross-compiling."
3976
3977     case "$cc_type" in
3978         gcc|llvm_gcc)
3979             check_native(){
3980                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3981                 sed -n "/cc1.*$1=/{
3982                             s/.*$1=\\([^ ]*\\).*/\\1/
3983                             p
3984                             q
3985                         }" $TMPE
3986             }
3987             cpu=$(check_native -march || check_native -mcpu)
3988         ;;
3989         clang)
3990             check_native(){
3991                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3992                 sed -n "/cc1.*-target-cpu /{
3993                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
3994                             p
3995                             q
3996                         }" $TMPE
3997             }
3998             cpu=$(check_native -march)
3999         ;;
4000     esac
4001
4002     test "${cpu:-host}" = host &&
4003         die "--cpu=host not supported with compiler $cc"
4004 fi
4005
4006 # Deal with common $arch aliases
4007 case "$arch" in
4008     aarch64|arm64)
4009         arch="aarch64"
4010     ;;
4011     arm*|iPad*|iPhone*)
4012         arch="arm"
4013     ;;
4014     mips*|IP*)
4015         arch="mips"
4016     ;;
4017     parisc*|hppa*)
4018         arch="parisc"
4019     ;;
4020     "Power Macintosh"|ppc*|powerpc*)
4021         arch="ppc"
4022     ;;
4023     s390|s390x)
4024         arch="s390"
4025     ;;
4026     sh4|sh)
4027         arch="sh4"
4028     ;;
4029     sun4u|sparc*)
4030         arch="sparc"
4031     ;;
4032     tilegx|tile-gx)
4033         arch="tilegx"
4034     ;;
4035     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4036         arch="x86"
4037     ;;
4038 esac
4039
4040 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4041 enable $arch
4042
4043 # Add processor-specific flags
4044 if enabled aarch64; then
4045
4046     case $cpu in
4047         armv*)
4048             cpuflags="-march=$cpu"
4049         ;;
4050         *)
4051             cpuflags="-mcpu=$cpu"
4052         ;;
4053     esac
4054
4055 elif enabled alpha; then
4056
4057     cpuflags="-mcpu=$cpu"
4058
4059 elif enabled arm; then
4060
4061     check_arm_arch() {
4062         check_cpp_condition stddef.h \
4063             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4064             $cpuflags
4065     }
4066
4067     probe_arm_arch() {
4068         if   check_arm_arch 4;        then echo armv4;
4069         elif check_arm_arch 4T;       then echo armv4t;
4070         elif check_arm_arch 5;        then echo armv5;
4071         elif check_arm_arch 5E;       then echo armv5e;
4072         elif check_arm_arch 5T;       then echo armv5t;
4073         elif check_arm_arch 5TE;      then echo armv5te;
4074         elif check_arm_arch 5TEJ;     then echo armv5te;
4075         elif check_arm_arch 6;        then echo armv6;
4076         elif check_arm_arch 6J;       then echo armv6j;
4077         elif check_arm_arch 6K;       then echo armv6k;
4078         elif check_arm_arch 6Z;       then echo armv6z;
4079         elif check_arm_arch 6ZK;      then echo armv6zk;
4080         elif check_arm_arch 6T2;      then echo armv6t2;
4081         elif check_arm_arch 7;        then echo armv7;
4082         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4083         elif check_arm_arch 7S;       then echo armv7-a;
4084         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4085         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4086         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4087         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4088         fi
4089     }
4090
4091     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4092
4093     case $cpu in
4094         armv*)
4095             cpuflags="-march=$cpu"
4096             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4097         ;;
4098         *)
4099             cpuflags="-mcpu=$cpu"
4100             case $cpu in
4101                 cortex-a*)                               subarch=armv7a  ;;
4102                 cortex-r*)                               subarch=armv7r  ;;
4103                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4104                 arm11*)                                  subarch=armv6   ;;
4105                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4106                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4107                 *)                             subarch=$(probe_arm_arch) ;;
4108             esac
4109         ;;
4110     esac
4111
4112     case "$subarch" in
4113         armv5t*)    enable fast_clz                ;;
4114         armv[6-8]*)
4115             enable fast_clz
4116             disabled fast_unaligned || enable fast_unaligned
4117             ;;
4118     esac
4119
4120 elif enabled avr32; then
4121
4122     case $cpu in
4123         ap7[02]0[0-2])
4124             subarch="avr32_ap"
4125             cpuflags="-mpart=$cpu"
4126         ;;
4127         ap)
4128             subarch="avr32_ap"
4129             cpuflags="-march=$cpu"
4130         ;;
4131         uc3[ab]*)
4132             subarch="avr32_uc"
4133             cpuflags="-mcpu=$cpu"
4134         ;;
4135         uc)
4136             subarch="avr32_uc"
4137             cpuflags="-march=$cpu"
4138         ;;
4139     esac
4140
4141 elif enabled bfin; then
4142
4143     cpuflags="-mcpu=$cpu"
4144
4145 elif enabled mips; then
4146
4147     cpuflags="-march=$cpu"
4148
4149     case $cpu in
4150         24kc)
4151             disable mips32r6
4152             disable mips64r2
4153             disable mips64r6
4154             disable mipsfpu
4155             disable mipsdsp
4156             disable mipsdspr2
4157             disable msa
4158         ;;
4159         24kf*)
4160             disable mips32r6
4161             disable mips64r2
4162             disable mips64r6
4163             disable mipsdsp
4164             disable mipsdspr2
4165             disable msa
4166         ;;
4167         24kec|34kc|1004kc)
4168             disable mips32r6
4169             disable mips64r2
4170             disable mips64r6
4171             disable mipsfpu
4172             disable mipsdspr2
4173             disable msa
4174         ;;
4175         24kef*|34kf*|1004kf*)
4176             disable mips32r6
4177             disable mips64r2
4178             disable mips64r6
4179             disable mipsdspr2
4180             disable msa
4181         ;;
4182         74kc)
4183             disable mips32r6
4184             disable mips64r2
4185             disable mips64r6
4186             disable mipsfpu
4187             disable msa
4188         ;;
4189         74kf)
4190             disable mips32r6
4191             disable mips64r2
4192             disable mips64r6
4193             disable msa
4194         ;;
4195         p5600)
4196             disable mips32r6
4197             disable mips64r2
4198             disable mips64r6
4199             disable mipsdsp
4200             disable mipsdspr2
4201             check_cflags "-mtune=p5600" &&
4202             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4203             add_asflags "-mfp64"
4204         ;;
4205         i6400)
4206             disable mips32r2
4207             disable mips32r6
4208             disable mips64r2
4209             disable mipsdsp
4210             disable mipsdspr2
4211             check_cflags "-mtune=i6400 -mabi=64" &&
4212             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4213             check_ldflags "-mabi=64" &&
4214             add_asflags "-mfp64"
4215         ;;
4216         loongson*)
4217             disable mips32r2
4218             disable mips32r6
4219             disable mips64r2
4220             disable mips64r6
4221             disable mipsfpu
4222             disable mipsdsp
4223             disable mipsdspr2
4224             disable msa
4225             enable local_aligned_8 local_aligned_16 local_aligned_32
4226             enable simd_align_16
4227             enable fast_64bit
4228             enable fast_clz
4229             enable fast_cmov
4230             enable fast_unaligned
4231             disable aligned_stack
4232             case $cpu in
4233                 loongson3*)
4234                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4235                 ;;
4236                 loongson2e)
4237                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4238                 ;;
4239                 loongson2f)
4240                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4241                 ;;
4242             esac
4243         ;;
4244         generic)
4245             disable mips64r6
4246             disable msa
4247         ;;
4248         *)
4249             # Unknown CPU. Disable everything.
4250             warn "unknown CPU. Disabling all MIPS optimizations."
4251             disable mipsfpu
4252             disable mips32r2
4253             disable mips32r6
4254             disable mips64r2
4255             disable mips64r6
4256             disable mipsdsp
4257             disable mipsdspr2
4258             disable msa
4259         ;;
4260     esac
4261
4262 elif enabled ppc; then
4263
4264     disable ldbrx
4265
4266     case $(tolower $cpu) in
4267         601|ppc601|powerpc601)
4268             cpuflags="-mcpu=601"
4269             disable altivec
4270         ;;
4271         603*|ppc603*|powerpc603*)
4272             cpuflags="-mcpu=603"
4273             disable altivec
4274         ;;
4275         604*|ppc604*|powerpc604*)
4276             cpuflags="-mcpu=604"
4277             disable altivec
4278         ;;
4279         g3|75*|ppc75*|powerpc75*)
4280             cpuflags="-mcpu=750"
4281             disable altivec
4282         ;;
4283         g4|745*|ppc745*|powerpc745*)
4284             cpuflags="-mcpu=7450"
4285             disable vsx
4286         ;;
4287         74*|ppc74*|powerpc74*)
4288             cpuflags="-mcpu=7400"
4289             disable vsx
4290         ;;
4291         g5|970|ppc970|powerpc970)
4292             cpuflags="-mcpu=970"
4293             disable vsx
4294         ;;
4295         power[3-6]*)
4296             cpuflags="-mcpu=$cpu"
4297             disable vsx
4298         ;;
4299         power[7-8]*)
4300             cpuflags="-mcpu=$cpu"
4301         ;;
4302         cell)
4303             cpuflags="-mcpu=cell"
4304             enable ldbrx
4305             disable vsx
4306         ;;
4307         e500mc)
4308             cpuflags="-mcpu=e500mc"
4309             disable altivec
4310         ;;
4311         e500v2)
4312             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4313             disable altivec
4314             disable dcbzl
4315         ;;
4316         e500)
4317             cpuflags="-mcpu=8540 -mhard-float"
4318             disable altivec
4319             disable dcbzl
4320         ;;
4321     esac
4322
4323 elif enabled sparc; then
4324
4325     case $cpu in
4326         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4327             cpuflags="-mcpu=$cpu"
4328         ;;
4329         ultrasparc*|niagara[234])
4330             cpuflags="-mcpu=$cpu"
4331         ;;
4332     esac
4333
4334 elif enabled x86; then
4335
4336     case $cpu in
4337         i[345]86|pentium)
4338             cpuflags="-march=$cpu"
4339             disable i686
4340             disable mmx
4341         ;;
4342         # targets that do NOT support nopl and conditional mov (cmov)
4343         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4344             cpuflags="-march=$cpu"
4345             disable i686
4346         ;;
4347         # targets that do support nopl and conditional mov (cmov)
4348         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4349         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4350             cpuflags="-march=$cpu"
4351             enable i686
4352             enable fast_cmov
4353         ;;
4354         # targets that do support conditional mov but on which it's slow
4355         pentium4|pentium4m|prescott|nocona)
4356             cpuflags="-march=$cpu"
4357             enable i686
4358             disable fast_cmov
4359         ;;
4360     esac
4361
4362 fi
4363
4364 if [ "$cpu" != generic ]; then
4365     add_cflags  $cpuflags
4366     add_asflags $cpuflags
4367     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4368 fi
4369
4370 # compiler sanity check
4371 check_exec <<EOF
4372 int main(void){ return 0; }
4373 EOF
4374 if test "$?" != 0; then
4375     echo "$cc is unable to create an executable file."
4376     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4377         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4378         echo "Only do this if you know what cross compiling means."
4379     fi
4380     die "C compiler test failed."
4381 fi
4382
4383 add_cppflags -D_ISOC99_SOURCE
4384 add_cxxflags -D__STDC_CONSTANT_MACROS
4385 check_cflags -std=c99
4386 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4387 #include <stdlib.h>
4388 EOF
4389 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4390 #include <stdlib.h>
4391 EOF
4392
4393 add_host_cppflags -D_ISOC99_SOURCE
4394 check_host_cflags -std=c99
4395 check_host_cflags -Wall
4396 check_host_cflags -O3
4397
4398 check_64bit(){
4399     arch32=$1
4400     arch64=$2
4401     expr=$3
4402     check_code cc "" "int test[2*($expr) - 1]" &&
4403         subarch=$arch64 || subarch=$arch32
4404 }
4405
4406 case "$arch" in
4407     aarch64|alpha|ia64)
4408         spic=$shared
4409     ;;
4410     mips)
4411         check_64bit mips mips64 '_MIPS_SIM > 1'
4412         spic=$shared
4413     ;;
4414     parisc)
4415         check_64bit parisc parisc64 'sizeof(void *) > 4'
4416         spic=$shared
4417     ;;
4418     ppc)
4419         check_64bit ppc ppc64 'sizeof(void *) > 4'
4420         spic=$shared
4421     ;;
4422     s390)
4423         check_64bit s390 s390x 'sizeof(void *) > 4'
4424         spic=$shared
4425     ;;
4426     sparc)
4427         check_64bit sparc sparc64 'sizeof(void *) > 4'
4428         spic=$shared
4429     ;;
4430     x86)
4431         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4432         # Treat x32 as x64 for now. Note it also needs spic=$shared
4433         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4434             subarch=x86_64
4435         if test "$subarch" = "x86_64"; then
4436             spic=$shared
4437         fi
4438     ;;
4439     ppc)
4440         check_cc <<EOF && subarch="ppc64"
4441         int test[(int)sizeof(char*) - 7];
4442 EOF
4443     ;;
4444 esac
4445
4446 enable $subarch
4447 enabled spic && enable_weak pic
4448
4449 # OS specific
4450 case $target_os in
4451     aix)
4452         SHFLAGS=-shared
4453         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4454         enabled shared && add_ldflags -Wl,-brtl
4455         ;;
4456     android)
4457         disable symver
4458         enable section_data_rel_ro
4459         SLIB_INSTALL_NAME='$(SLIBNAME)'
4460         SLIB_INSTALL_LINKS=
4461         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4462         ;;
4463     haiku)
4464         prefix_default="/boot/common"
4465         network_extralibs="-lnetwork"
4466         host_libs=
4467         ;;
4468     sunos)
4469         SHFLAGS='-shared -Wl,-h,$$(@F)'
4470         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4471         network_extralibs="-lsocket -lnsl"
4472         add_cppflags -D__EXTENSIONS__
4473         # When using suncc to build, the Solaris linker will mark
4474         # an executable with each instruction set encountered by
4475         # the Solaris assembler.  As our libraries contain their own
4476         # guards for processor-specific code, instead suppress
4477         # generation of the HWCAPS ELF section on Solaris x86 only.
4478         enabled_all suncc x86 &&
4479             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4480             add_ldflags -Wl,-M,mapfile
4481         nm_default='nm -P -g'
4482         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4483         ;;
4484     netbsd)
4485         disable symver
4486         oss_indev_extralibs="-lossaudio"
4487         oss_outdev_extralibs="-lossaudio"
4488         enabled gcc || check_ldflags -Wl,-zmuldefs
4489         ;;
4490     openbsd|bitrig)
4491         disable symver
4492         SHFLAGS='-shared'
4493         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4494         SLIB_INSTALL_LINKS=
4495         oss_indev_extralibs="-lossaudio"
4496         oss_outdev_extralibs="-lossaudio"
4497         ;;
4498     dragonfly)
4499         disable symver
4500         ;;
4501     freebsd)
4502         ;;
4503     bsd/os)
4504         add_extralibs -lpoll -lgnugetopt
4505         strip="strip -d"
4506         ;;
4507     darwin)
4508         enabled ppc && add_asflags -force_cpusubtype_ALL
4509         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4510         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4511         strip="${strip} -x"
4512         add_ldflags -Wl,-dynamic,-search_paths_first
4513         SLIBSUF=".dylib"
4514         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4515         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4516         objformat="macho"
4517         enabled x86_64 && objformat="macho64"
4518         enabled_any pic shared x86_64 ||
4519             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4520         ;;
4521     msys*)
4522         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4523         ;;
4524     mingw32*|mingw64*)
4525         if test $target_os = "mingw32ce"; then
4526             disable network
4527         else
4528             target_os=mingw32
4529         fi
4530         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4531         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4532         LIBTARGET=i386
4533         if enabled x86_64; then
4534             LIBTARGET="i386:x86-64"
4535         elif enabled arm; then
4536             LIBTARGET=arm-wince
4537         fi
4538         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4539         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4540         shlibdir_default="$bindir_default"
4541         SLIBPREF=""
4542         SLIBSUF=".dll"
4543         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4544         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4545         dlltool="${cross_prefix}dlltool"
4546         if check_cmd lib.exe -list; then
4547             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4548             if enabled x86_64; then
4549                 LIBTARGET=x64
4550             fi
4551         elif check_cmd $dlltool --version; then
4552             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4553         fi
4554         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4555         SLIB_INSTALL_LINKS=
4556         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4557         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4558         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4559         objformat="win32"
4560         ranlib=:
4561         enable dos_paths
4562         check_ldflags -Wl,--nxcompat,--dynamicbase
4563         # Lets work around some stupidity in binutils.
4564         # ld will strip relocations from executables even though we need them
4565         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4566         # however ld then forgets what the entry point should be (oops) so we
4567         # have to manually (re)set it.
4568         if enabled x86_32; then
4569             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4570         elif enabled x86_64; then
4571             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4572             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4573             # Set image base >4GB for extra entropy with HEASLR
4574             add_ldexeflags -Wl,--image-base,0x140000000
4575             append SHFLAGS -Wl,--image-base,0x180000000
4576         fi
4577         ;;
4578     win32|win64)
4579         disable symver
4580         if enabled shared; then
4581             # Link to the import library instead of the normal static library
4582             # for shared libs.
4583             LD_LIB='%.lib'
4584             # Cannot build both shared and static libs with MSVC or icl.
4585             disable static
4586         fi
4587         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4588         shlibdir_default="$bindir_default"
4589         SLIBPREF=""
4590         SLIBSUF=".dll"
4591         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4592         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4593         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4594         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4595         SLIB_INSTALL_LINKS=
4596         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4597         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4598         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4599         objformat="win32"
4600         ranlib=:
4601         enable dos_paths
4602         ;;
4603     cygwin*)
4604         target_os=cygwin
4605         shlibdir_default="$bindir_default"
4606         SLIBPREF="cyg"
4607         SLIBSUF=".dll"
4608         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4609         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4610         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4611         SLIB_INSTALL_LINKS=
4612         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4613         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4614         objformat="win32"
4615         enable dos_paths
4616         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4617         ;;
4618     *-dos|freedos|opendos)
4619         network_extralibs="-lsocket"
4620         objformat="coff"
4621         enable dos_paths
4622         add_cppflags -U__STRICT_ANSI__
4623         ;;
4624     linux)
4625         enable dv1394
4626         enable section_data_rel_ro
4627         ;;
4628     irix*)
4629         target_os=irix
4630         ranlib="echo ignoring ranlib"
4631         ;;
4632     os/2*)
4633         strip="lxlite -CS"
4634         ln_s="cp -f"
4635         objformat="aout"
4636         add_cppflags -D_GNU_SOURCE
4637         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4638         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4639         LIBSUF="_s.a"
4640         SLIBPREF=""
4641         SLIBSUF=".dll"
4642         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4643         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4644         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4645             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4646             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4647             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4648             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4649         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4650             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4651         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4652         enable dos_paths
4653         enable_weak os2threads
4654         ;;
4655     gnu/kfreebsd)
4656         add_cppflags -D_BSD_SOURCE
4657         ;;
4658     gnu)
4659         ;;
4660     qnx)
4661         add_cppflags -D_QNX_SOURCE
4662         network_extralibs="-lsocket"
4663         ;;
4664     symbian)
4665         SLIBSUF=".dll"
4666         enable dos_paths
4667         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4668         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4669         add_ldflags -Wl,--target1-abs,--no-undefined \
4670                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4671                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4672         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4673                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4674                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4675         ;;
4676     osf1)
4677         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4678         ;;
4679     minix)
4680         ;;
4681     plan9)
4682         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4683                      -D_REENTRANT_SOURCE        \
4684                      -D_RESEARCH_SOURCE         \
4685                      -DFD_SETSIZE=96            \
4686                      -DHAVE_SOCK_OPTS
4687         add_compat strtod.o strtod=avpriv_strtod
4688         network_extralibs='-lbsd'
4689         exeobjs=compat/plan9/main.o
4690         disable ffserver
4691         cp_f='cp'
4692         ;;
4693     none)
4694         ;;
4695     *)
4696         die "Unknown OS '$target_os'."
4697         ;;
4698 esac
4699
4700 # test if creating links works
4701 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4702 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4703 mkdir "$link_dest"
4704 $ln_s "$link_dest" "$link_name"
4705 touch "$link_dest/test_file"
4706 if [ -e "$link_name/test_file" ]; then
4707     # create link to source path
4708     [ -e src ] && rm src
4709     $ln_s "$source_path" src
4710     source_link=src
4711 else
4712     # creating directory links doesn't work
4713     # fall back to using the full source path
4714     source_link="$source_path"
4715 fi
4716 # cleanup
4717 rm -r "$link_dest"
4718 rm -r "$link_name"
4719
4720 # determine libc flavour
4721
4722 probe_libc(){
4723     pfx=$1
4724     pfx_no_=${pfx%_}
4725     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4726     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4727         eval ${pfx}libc_type=uclibc
4728         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4729     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4730         eval ${pfx}libc_type=glibc
4731         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4732     # MinGW headers can be installed on Cygwin, so check for newlib first.
4733     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4734         eval ${pfx}libc_type=newlib
4735         add_${pfx}cppflags -U__STRICT_ANSI__
4736     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4737     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4738         eval ${pfx}libc_type=mingw64
4739         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4740             add_compat msvcrt/snprintf.o
4741             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4742         fi
4743         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4744         eval test \$${pfx_no_}cc_type = "gcc" &&
4745             add_${pfx}cppflags -D__printf__=__gnu_printf__
4746     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4747          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4748         eval ${pfx}libc_type=mingw32
4749         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4750             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4751             die "ERROR: MinGW32 runtime version must be >= 3.15."
4752         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4753         eval test \$${pfx_no_}cc_type = "gcc" &&
4754             add_${pfx}cppflags -D__printf__=__gnu_printf__
4755     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4756         eval ${pfx}libc_type=msvcrt
4757         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4758             if [ "$pfx" = host_ ]; then
4759                 add_host_cppflags -Dsnprintf=_snprintf
4760             else
4761                 add_compat strtod.o strtod=avpriv_strtod
4762                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4763                                              _snprintf=avpriv_snprintf  \
4764                                              vsnprintf=avpriv_vsnprintf
4765             fi
4766         fi
4767         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4768         # 0x601 by default unless something else is set by the user.
4769         # This can easily lead to us detecting functions only present
4770         # in such new versions and producing binaries requiring windows 7.0.
4771         # Therefore explicitly set the default to XP unless the user has
4772         # set something else on the command line.
4773         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4774         # family. For these cases, configure is free to use any functions
4775         # found in the SDK headers by default. (Alternatively, we could force
4776         # _WIN32_WINNT to 0x0602 in that case.)
4777         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4778             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4779 #ifdef WINAPI_FAMILY
4780 #include <winapifamily.h>
4781 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4782 #error not desktop
4783 #endif
4784 #endif
4785 EOF
4786     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4787         eval ${pfx}libc_type=klibc
4788     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4789         eval ${pfx}libc_type=bionic
4790     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4791         eval ${pfx}libc_type=solaris
4792         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4793     fi
4794     check_${pfx}cc <<EOF
4795 #include <time.h>
4796 void *v = localtime_r;
4797 EOF
4798 test "$?" != 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
4799 #include <time.h>
4800 void *v = localtime_r;
4801 EOF
4802
4803 }
4804
4805 probe_libc
4806 test -n "$libc_type" && enable libc_$libc_type
4807 probe_libc host_
4808 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4809
4810 case $libc_type in
4811     bionic)
4812         add_compat strtod.o strtod=avpriv_strtod
4813         ;;
4814 esac
4815
4816 # hacks for compiler/libc/os combinations
4817
4818 if enabled_all tms470 libc_glibc; then
4819     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4820     add_cppflags -D__USER_LABEL_PREFIX__=
4821     add_cppflags -D__builtin_memset=memset
4822     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4823     add_cflags   -pds=48    # incompatible redefinition of macro
4824 fi
4825
4826 if enabled_all ccc libc_glibc; then
4827     add_ldflags -Wl,-z,now  # calls to libots crash without this
4828 fi
4829
4830 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4831     add_cppflags '-I\$(SRC_PATH)/compat/float'
4832
4833 esc(){
4834     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4835 }
4836
4837 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4838
4839 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4840
4841 set_default libdir
4842 : ${shlibdir_default:="$libdir"}
4843 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4844
4845 set_default $PATHS_LIST
4846 set_default nm
4847
4848 # we need to build at least one lib type
4849 if ! enabled_any static shared; then
4850     cat <<EOF
4851 At least one library type must be built.
4852 Specify --enable-static to build the static libraries or --enable-shared to
4853 build the shared libraries as well. To only build the shared libraries specify
4854 --disable-static in addition to --enable-shared.
4855 EOF
4856     exit 1;
4857 fi
4858
4859 die_license_disabled() {
4860     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4861 }
4862
4863 die_license_disabled_gpl() {
4864     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4865 }
4866
4867 die_license_disabled gpl frei0r
4868 die_license_disabled gpl libcdio
4869 die_license_disabled gpl librubberband
4870 die_license_disabled gpl libsmbclient
4871 die_license_disabled gpl libutvideo
4872 die_license_disabled gpl libvidstab
4873 die_license_disabled gpl libx264
4874 die_license_disabled gpl libx26