Merge commit '8c399bd5cefd572eceb448981fcb6d4dbca35d27'
[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-libass          enable libass subtitles rendering,
211                            needed for subtitles and ass filter [no]
212   --enable-libbluray       enable BluRay reading using libbluray [no]
213   --enable-libbs2b         enable bs2b DSP library [no]
214   --enable-libcaca         enable textual display using libcaca [no]
215   --enable-libcelt         enable CELT decoding via libcelt [no]
216   --enable-libcdio         enable audio CD grabbing with libcdio [no]
217   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
218                            and libraw1394 [no]
219   --enable-libdcadec       enable DCA decoding via libdcadec [no]
220   --enable-libfaac         enable AAC encoding via libfaac [no]
221   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
222   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
223   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
224   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
225   --enable-libgme          enable Game Music Emu via libgme [no]
226   --enable-libgsm          enable GSM de/encoding via libgsm [no]
227   --enable-libiec61883     enable iec61883 via libiec61883 [no]
228   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
229   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
230   --enable-libmfx          enable HW acceleration through libmfx
231   --enable-libmodplug      enable ModPlug via libmodplug [no]
232   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
233   --enable-libnut          enable NUT (de)muxing via libnut,
234                            native (de)muxer exists [no]
235   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
236   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
237   --enable-libopencv       enable video filtering via libopencv [no]
238   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
239   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
240   --enable-libopus         enable Opus de/encoding via libopus [no]
241   --enable-libpulse        enable Pulseaudio input via libpulse [no]
242   --enable-librubberband   enable rubberband needed for rubberband filter [no]
243   --enable-librtmp         enable RTMP[E] support via librtmp [no]
244   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
245   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
246   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
247   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
248   --enable-libsoxr         enable Include libsoxr resampling [no]
249   --enable-libspeex        enable Speex de/encoding via libspeex [no]
250   --enable-libssh          enable SFTP protocol via libssh [no]
251   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
252   --enable-libtheora       enable Theora encoding via libtheora [no]
253   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
254   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
255   --enable-libv4l2         enable libv4l2/v4l-utils [no]
256   --enable-libvidstab      enable video stabilization using vid.stab [no]
257   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
258   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
259                            native implementation exists [no]
260   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
261   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
262   --enable-libwebp         enable WebP encoding via libwebp [no]
263   --enable-libx264         enable H.264 encoding via x264 [no]
264   --enable-libx265         enable HEVC encoding via x265 [no]
265   --enable-libxavs         enable AVS encoding via xavs [no]
266   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
267   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
268   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
269   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
270   --enable-libxvid         enable Xvid encoding via xvidcore,
271                            native MPEG-4/Xvid encoder exists [no]
272   --enable-libzimg         enable z.lib, needed for zscale filter [no]
273   --enable-libzmq          enable message passing via libzmq [no]
274   --enable-libzvbi         enable teletext support via libzvbi [no]
275   --disable-lzma           disable lzma [autodetect]
276   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
277   --enable-mmal            enable decoding via MMAL [no]
278   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
279   --enable-nvenc           enable NVIDIA NVENC support [no]
280   --enable-openal          enable OpenAL 1.1 capture support [no]
281   --enable-opencl          enable OpenCL code
282   --enable-opengl          enable OpenGL rendering [no]
283   --enable-openssl         enable openssl, needed for https support
284                            if gnutls is not used [no]
285   --disable-schannel       disable SChannel SSP, needed for TLS support on
286                            Windows if openssl and gnutls are not used [autodetect]
287   --disable-sdl            disable sdl [autodetect]
288   --disable-securetransport disable Secure Transport, needed for TLS support
289                            on OSX if openssl and gnutls are not used [autodetect]
290   --enable-x11grab         enable X11 grabbing (legacy) [no]
291   --disable-xlib           disable xlib [autodetect]
292   --disable-zlib           disable zlib [autodetect]
293
294 Toolchain options:
295   --arch=ARCH              select architecture [$arch]
296   --cpu=CPU                select the minimum required CPU (affects
297                            instruction selection, may crash on older CPUs)
298   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
299   --progs-suffix=SUFFIX    program name suffix []
300   --enable-cross-compile   assume a cross-compiler is used
301   --sysroot=PATH           root of cross-build tree
302   --sysinclude=PATH        location of cross-build system headers
303   --target-os=OS           compiler targets OS [$target_os]
304   --target-exec=CMD        command to run executables on target
305   --target-path=DIR        path to view of build directory on target
306   --target-samples=DIR     path to samples directory on target
307   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
308   --toolchain=NAME         set tool defaults according to NAME
309   --nm=NM                  use nm tool NM [$nm_default]
310   --ar=AR                  use archive tool AR [$ar_default]
311   --as=AS                  use assembler AS [$as_default]
312   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
313   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
314   --cc=CC                  use C compiler CC [$cc_default]
315   --cxx=CXX                use C compiler CXX [$cxx_default]
316   --objcc=OCC              use ObjC compiler OCC [$cc_default]
317   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
318   --ld=LD                  use linker LD [$ld_default]
319   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
320   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
321   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
322   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
323   --host-cc=HOSTCC         use host C compiler HOSTCC
324   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
325   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
326   --host-ld=HOSTLD         use host linker HOSTLD
327   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
328   --host-libs=HLIBS        use libs HLIBS when linking for host
329   --host-os=OS             compiler host OS [$target_os]
330   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
331   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
332   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
333   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
334   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
335   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
336   --extra-libs=ELIBS       add ELIBS [$ELIBS]
337   --extra-version=STRING   version string suffix []
338   --optflags=OPTFLAGS      override optimization-related compiler flags
339   --build-suffix=SUFFIX    library name suffix []
340   --enable-pic             build position-independent code
341   --enable-thumb           compile for Thumb instruction set
342   --enable-lto             use link-time optimization
343   --env="ENV=override"     override the environment variables
344
345 Advanced options (experts only):
346   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
347   --custom-allocator=NAME  use a supported custom allocator
348   --disable-symver         disable symbol versioning
349   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
350   --disable-safe-bitstream-reader
351                            disable buffer boundary checking in bitreaders
352                            (faster, but may crash)
353   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
354   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
355
356 Optimization options (experts only):
357   --disable-asm            disable all assembly optimizations
358   --disable-altivec        disable AltiVec optimizations
359   --disable-vsx            disable VSX optimizations
360   --disable-power8         disable POWER8 optimizations
361   --disable-amd3dnow       disable 3DNow! optimizations
362   --disable-amd3dnowext    disable 3DNow! extended optimizations
363   --disable-mmx            disable MMX optimizations
364   --disable-mmxext         disable MMXEXT optimizations
365   --disable-sse            disable SSE optimizations
366   --disable-sse2           disable SSE2 optimizations
367   --disable-sse3           disable SSE3 optimizations
368   --disable-ssse3          disable SSSE3 optimizations
369   --disable-sse4           disable SSE4 optimizations
370   --disable-sse42          disable SSE4.2 optimizations
371   --disable-avx            disable AVX optimizations
372   --disable-xop            disable XOP optimizations
373   --disable-fma3           disable FMA3 optimizations
374   --disable-fma4           disable FMA4 optimizations
375   --disable-avx2           disable AVX2 optimizations
376   --disable-aesni          disable AESNI optimizations
377   --disable-armv5te        disable armv5te optimizations
378   --disable-armv6          disable armv6 optimizations
379   --disable-armv6t2        disable armv6t2 optimizations
380   --disable-vfp            disable VFP optimizations
381   --disable-neon           disable NEON optimizations
382   --disable-inline-asm     disable use of inline assembly
383   --disable-yasm           disable use of nasm/yasm assembly
384   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
385   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
386   --disable-msa            disable MSA optimizations
387   --disable-mipsfpu        disable floating point MIPS optimizations
388   --disable-mmi            disable Loongson SIMD optimizations
389   --disable-fast-unaligned consider unaligned accesses slow
390
391 Developer options (useful when working on FFmpeg itself):
392   --disable-debug          disable debugging symbols
393   --enable-debug=LEVEL     set the debug level [$debuglevel]
394   --disable-optimizations  disable compiler optimizations
395   --enable-extra-warnings  enable more compiler warnings
396   --disable-stripping      disable stripping of executables and shared libraries
397   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
398                            2 causes a slowdown at runtime.
399   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
400   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
401                            leaks and errors, using the specified valgrind binary.
402                            Cannot be combined with --target-exec
403   --enable-ftrapv          Trap arithmetic overflows
404   --samples=PATH           location of test samples for FATE, if not set use
405                            \$FATE_SAMPLES at make invocation time.
406   --enable-neon-clobber-test check NEON registers for clobbering (should be
407                            used only for debugging purposes)
408   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
409                            should be used only for debugging purposes)
410   --enable-random          randomly enable/disable components
411   --disable-random
412   --enable-random=LIST     randomly enable/disable specific components or
413   --disable-random=LIST    component groups. LIST is a comma-separated list
414                            of NAME[:PROB] entries where NAME is a component
415                            (group) and PROB the probability associated with
416                            NAME (default 0.5).
417   --random-seed=VALUE      seed value for --enable/disable-random
418   --disable-valgrind-backtrace do not print a backtrace under Valgrind
419                            (only applies to --disable-optimizations builds)
420
421 NOTE: Object files are built at the place where configure is launched.
422 EOF
423   exit 0
424 }
425
426 quotes='""'
427 if test -t 1 && which tput >/dev/null 2>&1; then
428     ncolors=$(tput colors)
429     if test -n "$ncolors" && test $ncolors -ge 8; then
430         bold_color=$(tput bold)
431         warn_color=$(tput setaf 3)
432         error_color=$(tput setaf 1)
433         reset_color=$(tput sgr0)
434     fi
435     # 72 used instead of 80 since that's the default of pr
436     ncols=$(tput cols)
437 fi
438 : ${ncols:=72}
439
440 log(){
441     echo "$@" >> $logfile
442 }
443
444 log_file(){
445     log BEGIN $1
446     pr -n -t $1 >> $logfile
447     log END $1
448 }
449
450 warn(){
451     log "WARNING: $*"
452     WARNINGS="${WARNINGS}WARNING: $*\n"
453 }
454
455 die(){
456     log "$@"
457     echo "$error_color$bold_color$@$reset_color"
458     cat <<EOF
459
460 If you think configure made a mistake, make sure you are using the latest
461 version from Git.  If the latest version fails, report the problem to the
462 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
463 EOF
464     if disabled logging; then
465         cat <<EOF
466 Rerun configure with logging enabled (do not use --disable-logging), and
467 include the log this produces with your report.
468 EOF
469     else
470         cat <<EOF
471 Include the log file "$logfile" produced by configure as this will help
472 solve the problem.
473 EOF
474     fi
475     exit 1
476 }
477
478 # Avoid locale weirdness, besides we really just want to translate ASCII.
479 toupper(){
480     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
481 }
482
483 tolower(){
484     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
485 }
486
487 c_escape(){
488     echo "$*" | sed 's/["\\]/\\\0/g'
489 }
490
491 sh_quote(){
492     v=$(echo "$1" | sed "s/'/'\\\\''/g")
493     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
494     echo "$v"
495 }
496
497 cleanws(){
498     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
499 }
500
501 filter(){
502     pat=$1
503     shift
504     for v; do
505         eval "case $v in $pat) echo $v ;; esac"
506     done
507 }
508
509 filter_out(){
510     pat=$1
511     shift
512     for v; do
513         eval "case $v in $pat) ;; *) echo $v ;; esac"
514     done
515 }
516
517 map(){
518     m=$1
519     shift
520     for v; do eval $m; done
521 }
522
523 add_suffix(){
524     suffix=$1
525     shift
526     for v; do echo ${v}${suffix}; done
527 }
528
529 set_all(){
530     value=$1
531     shift
532     for var in $*; do
533         eval $var=$value
534     done
535 }
536
537 set_weak(){
538     value=$1
539     shift
540     for var; do
541         eval : \${$var:=$value}
542     done
543 }
544
545 sanitize_var_name(){
546     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
547 }
548
549 set_safe(){
550     var=$1
551     shift
552     eval $(sanitize_var_name "$var")='$*'
553 }
554
555 get_safe(){
556     eval echo \$$(sanitize_var_name "$1")
557 }
558
559 pushvar(){
560     for pvar in $*; do
561         eval level=\${${pvar}_level:=0}
562         eval ${pvar}_${level}="\$$pvar"
563         eval ${pvar}_level=$(($level+1))
564     done
565 }
566
567 popvar(){
568     for pvar in $*; do
569         eval level=\${${pvar}_level:-0}
570         test $level = 0 && continue
571         eval level=$(($level-1))
572         eval $pvar="\${${pvar}_${level}}"
573         eval ${pvar}_level=$level
574         eval unset ${pvar}_${level}
575     done
576 }
577
578 enable(){
579     set_all yes $*
580 }
581
582 disable(){
583     set_all no $*
584 }
585
586 enable_weak(){
587     set_weak yes $*
588 }
589
590 disable_weak(){
591     set_weak no $*
592 }
593
594 enable_safe(){
595     for var; do
596         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
597     done
598 }
599
600 disable_safe(){
601     for var; do
602         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
603     done
604 }
605
606 do_enable_deep(){
607     for var; do
608         enabled $var && continue
609         eval sel="\$${var}_select"
610         eval sgs="\$${var}_suggest"
611         pushvar var sgs
612         enable_deep $sel
613         popvar sgs
614         enable_deep_weak $sgs
615         popvar var
616     done
617 }
618
619 enable_deep(){
620     do_enable_deep $*
621     enable $*
622 }
623
624 enable_deep_weak(){
625     for var; do
626         disabled $var && continue
627         pushvar var
628         do_enable_deep $var
629         popvar var
630         enable_weak $var
631     done
632 }
633
634 enabled(){
635     test "${1#!}" = "$1" && op='=' || op=!=
636     eval test "x\$${1#!}" $op "xyes"
637 }
638
639 disabled(){
640     test "${1#!}" = "$1" && op='=' || op=!=
641     eval test "x\$${1#!}" $op "xno"
642 }
643
644 enabled_all(){
645     for opt; do
646         enabled $opt || return 1
647     done
648 }
649
650 disabled_all(){
651     for opt; do
652         disabled $opt || return 1
653     done
654 }
655
656 enabled_any(){
657     for opt; do
658         enabled $opt && return 0
659     done
660 }
661
662 disabled_any(){
663     for opt; do
664         disabled $opt && return 0
665     done
666     return 1
667 }
668
669 set_default(){
670     for opt; do
671         eval : \${$opt:=\$${opt}_default}
672     done
673 }
674
675 is_in(){
676     value=$1
677     shift
678     for var in $*; do
679         [ $var = $value ] && return 0
680     done
681     return 1
682 }
683
684 do_check_deps(){
685     for cfg; do
686         cfg="${cfg#!}"
687         enabled ${cfg}_checking && die "Circular dependency for $cfg."
688         disabled ${cfg}_checking && continue
689         enable ${cfg}_checking
690         append allopts $cfg
691
692         eval dep_all="\$${cfg}_deps"
693         eval dep_any="\$${cfg}_deps_any"
694         eval dep_sel="\$${cfg}_select"
695         eval dep_sgs="\$${cfg}_suggest"
696         eval dep_ifa="\$${cfg}_if"
697         eval dep_ifn="\$${cfg}_if_any"
698
699         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
700         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
701         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
702
703         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
704         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
705         enabled_all  $dep_all || disable $cfg
706         enabled_any  $dep_any || disable $cfg
707         disabled_any $dep_sel && disable $cfg
708
709         if enabled $cfg; then
710             enable_deep $dep_sel
711             enable_deep_weak $dep_sgs
712         fi
713
714         disable ${cfg}_checking
715     done
716 }
717
718 check_deps(){
719     unset allopts
720
721     do_check_deps "$@"
722
723     for cfg in $allopts; do
724         enabled $cfg || continue
725         eval dep_extralibs="\$${cfg}_extralibs"
726         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
727     done
728 }
729
730 print_config(){
731     pfx=$1
732     files=$2
733     shift 2
734     map 'eval echo "$v \${$v:-no}"' "$@" |
735     awk "BEGIN { split(\"$files\", files) }
736         {
737             c = \"$pfx\" toupper(\$1);
738             v = \$2;
739             sub(/yes/, 1, v);
740             sub(/no/,  0, v);
741             for (f in files) {
742                 file = files[f];
743                 if (file ~ /\\.h\$/) {
744                     printf(\"#define %s %d\\n\", c, v) >>file;
745                 } else if (file ~ /\\.asm\$/) {
746                     printf(\"%%define %s %d\\n\", c, v) >>file;
747                 } else if (file ~ /\\.mak\$/) {
748                     n = -v ? \"\" : \"!\";
749                     printf(\"%s%s=yes\\n\", n, c) >>file;
750                 } else if (file ~ /\\.texi\$/) {
751                     pre = -v ? \"\" : \"@c \";
752                     yesno = \$2;
753                     c2 = tolower(c);
754                     gsub(/_/, \"-\", c2);
755                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
756                 }
757             }
758         }"
759 }
760
761 print_enabled(){
762     suf=$1
763     shift
764     for v; do
765         enabled $v && printf "%s\n" ${v%$suf};
766     done
767 }
768
769 append(){
770     var=$1
771     shift
772     eval "$var=\"\$$var $*\""
773 }
774
775 prepend(){
776     var=$1
777     shift
778     eval "$var=\"$* \$$var\""
779 }
780
781 unique(){
782     var=$1
783     uniq_list=""
784     for tok in $(eval echo \$$var); do
785         uniq_list="$(filter_out $tok $uniq_list) $tok"
786     done
787     eval "$var=\"${uniq_list}\""
788 }
789
790 add_cppflags(){
791     append CPPFLAGS "$@"
792 }
793
794 add_cflags(){
795     append CFLAGS $($cflags_filter "$@")
796 }
797
798 add_cxxflags(){
799     append CXXFLAGS $($cflags_filter "$@")
800 }
801
802 add_asflags(){
803     append ASFLAGS $($asflags_filter "$@")
804 }
805
806 add_objcflags(){
807     append OBJCFLAGS $($objcflags_filter "$@")
808 }
809
810 add_ldflags(){
811     append LDFLAGS $($ldflags_filter "$@")
812 }
813
814 add_ldexeflags(){
815     append LDEXEFLAGS $($ldflags_filter "$@")
816 }
817
818 add_ldlibflags(){
819     append LDLIBFLAGS $($ldflags_filter "$@")
820 }
821
822 add_stripflags(){
823     append ASMSTRIPFLAGS "$@"
824 }
825
826 add_extralibs(){
827     prepend extralibs $($ldflags_filter "$@")
828 }
829
830 add_host_cppflags(){
831     append host_cppflags "$@"
832 }
833
834 add_host_cflags(){
835     append host_cflags $($host_cflags_filter "$@")
836 }
837
838 add_host_ldflags(){
839     append host_ldflags $($host_ldflags_filter "$@")
840 }
841
842 add_compat(){
843     append compat_objs $1
844     shift
845     map 'add_cppflags -D$v' "$@"
846 }
847
848 check_cmd(){
849     log "$@"
850     "$@" >> $logfile 2>&1
851 }
852
853 check_stat(){
854     log check_stat "$@"
855     stat "$1" >> $logfile 2>&1
856 }
857
858 cc_o(){
859     eval printf '%s\\n' $CC_O
860 }
861
862 cc_e(){
863     eval printf '%s\\n' $CC_E
864 }
865
866 check_cc(){
867     log check_cc "$@"
868     cat > $TMPC
869     log_file $TMPC
870     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
871 }
872
873 check_cxx(){
874     log check_cxx "$@"
875     cat > $TMPCPP
876     log_file $TMPCPP
877     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
878 }
879
880 check_objcc(){
881     log check_objcc "$@"
882     cat > $TMPM
883     log_file $TMPM
884     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
885 }
886
887 check_cpp(){
888     log check_cpp "$@"
889     cat > $TMPC
890     log_file $TMPC
891     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
892 }
893
894 as_o(){
895     eval printf '%s\\n' $AS_O
896 }
897
898 check_as(){
899     log check_as "$@"
900     cat > $TMPS
901     log_file $TMPS
902     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
903 }
904
905 check_inline_asm(){
906     log check_inline_asm "$@"
907     name="$1"
908     code="$2"
909     shift 2
910     disable $name
911     check_cc "$@" <<EOF && enable $name
912 void foo(void){ __asm__ volatile($code); }
913 EOF
914 }
915
916 check_insn(){
917     log check_insn "$@"
918     check_inline_asm ${1}_inline "\"$2\""
919     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
920 }
921
922 check_yasm(){
923     log check_yasm "$@"
924     echo "$1" > $TMPS
925     log_file $TMPS
926     shift 1
927     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
928 }
929
930 ld_o(){
931     eval printf '%s\\n' $LD_O
932 }
933
934 check_ld(){
935     log check_ld "$@"
936     type=$1
937     shift 1
938     flags=$(filter_out '-l*|*.so' $@)
939     libs=$(filter '-l*|*.so' $@)
940     check_$type $($cflags_filter $flags) || return
941     flags=$($ldflags_filter $flags)
942     libs=$($ldflags_filter $libs)
943     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
944 }
945
946 print_include(){
947     hdr=$1
948     test "${hdr%.h}" = "${hdr}" &&
949         echo "#include $hdr"    ||
950         echo "#include <$hdr>"
951 }
952
953 check_code(){
954     log check_code "$@"
955     check=$1
956     headers=$2
957     code=$3
958     shift 3
959     {
960         for hdr in $headers; do
961             print_include $hdr
962         done
963         echo "int main(void) { $code; return 0; }"
964     } | check_$check "$@"
965 }
966
967 check_cppflags(){
968     log check_cppflags "$@"
969     check_cc "$@" <<EOF && append CPPFLAGS "$@"
970 int x;
971 EOF
972 }
973
974 test_cflags(){
975     log test_cflags "$@"
976     set -- $($cflags_filter "$@")
977     check_cc "$@" <<EOF
978 int x;
979 EOF
980 }
981
982 check_cflags(){
983     log check_cflags "$@"
984     test_cflags "$@" && add_cflags "$@"
985 }
986
987 check_cxxflags(){
988     log check_cxxflags "$@"
989     set -- $($cflags_filter "$@")
990     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
991 int x;
992 EOF
993 }
994
995 test_objcflags(){
996     log test_cflags "$@"
997     set -- $($cflags_filter "$@")
998     check_objcc "$@" <<EOF
999 int x;
1000 EOF
1001 }
1002
1003 check_objcflags(){
1004     log check_cflags "$@"
1005     test_objcflags "$@" && add_objcflags "$@"
1006 }
1007
1008 test_ldflags(){
1009     log test_ldflags "$@"
1010     check_ld "cc" "$@" <<EOF
1011 int main(void){ return 0; }
1012 EOF
1013 }
1014
1015 check_ldflags(){
1016     log check_ldflags "$@"
1017     test_ldflags "$@" && add_ldflags "$@"
1018 }
1019
1020 test_stripflags(){
1021     log test_stripflags "$@"
1022     # call check_cc to get a fresh TMPO
1023     check_cc <<EOF
1024 int main(void) { return 0; }
1025 EOF
1026     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1027 }
1028
1029 check_stripflags(){
1030     log check_stripflags "$@"
1031     test_stripflags "$@" && add_stripflags "$@"
1032 }
1033
1034 check_header(){
1035     log check_header "$@"
1036     header=$1
1037     shift
1038     disable_safe $header
1039     check_cpp "$@" <<EOF && enable_safe $header
1040 #include <$header>
1041 int x;
1042 EOF
1043 }
1044
1045 check_header_objcc(){
1046     log check_header_objcc "$@"
1047     rm -f -- "$TMPO"
1048     header=$1
1049     shift
1050     disable_safe $header
1051     {
1052        echo "#include <$header>"
1053        echo "int main(void) { return 0; }"
1054     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1055 }
1056
1057 check_func(){
1058     log check_func "$@"
1059     func=$1
1060     shift
1061     disable $func
1062     check_ld "cc" "$@" <<EOF && enable $func
1063 extern int $func();
1064 int main(void){ $func(); }
1065 EOF
1066 }
1067
1068 check_complexfunc(){
1069     log check_complexfunc "$@"
1070     func=$1
1071     narg=$2
1072     shift 2
1073     test $narg = 2 && args="f, g" || args="f * I"
1074     disable $func
1075     check_ld "cc" "$@" <<EOF && enable $func
1076 #include <complex.h>
1077 #include <math.h>
1078 float foo(complex float f, complex float g) { return $func($args); }
1079 int main(void){ return (int) foo; }
1080 EOF
1081 }
1082
1083 check_mathfunc(){
1084     log check_mathfunc "$@"
1085     func=$1
1086     narg=$2
1087     shift 2
1088     test $narg = 2 && args="f, g" || args="f"
1089     disable $func
1090     check_ld "cc" "$@" <<EOF && enable $func
1091 #include <math.h>
1092 float foo(float f, float g) { return $func($args); }
1093 int main(void){ return (int) foo; }
1094 EOF
1095 }
1096
1097 check_func_headers(){
1098     log check_func_headers "$@"
1099     headers=$1
1100     funcs=$2
1101     shift 2
1102     {
1103         for hdr in $headers; do
1104             print_include $hdr
1105         done
1106         for func in $funcs; do
1107             echo "long check_$func(void) { return (long) $func; }"
1108         done
1109         echo "int main(void) { return 0; }"
1110     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1111 }
1112
1113 check_class_headers_cpp(){
1114     log check_class_headers_cpp "$@"
1115     headers=$1
1116     classes=$2
1117     shift 2
1118     {
1119         for hdr in $headers; do
1120             echo "#include <$hdr>"
1121         done
1122         echo "int main(void) { "
1123         i=1
1124         for class in $classes; do
1125             echo "$class obj$i;"
1126             i=$(expr $i + 1)
1127         done
1128         echo "return 0; }"
1129     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1130 }
1131
1132 check_cpp_condition(){
1133     log check_cpp_condition "$@"
1134     header=$1
1135     condition=$2
1136     shift 2
1137     check_cpp "$@" <<EOF
1138 #include <$header>
1139 #if !($condition)
1140 #error "unsatisfied condition: $condition"
1141 #endif
1142 EOF
1143 }
1144
1145 check_lib(){
1146     log check_lib "$@"
1147     header="$1"
1148     func="$2"
1149     shift 2
1150     check_header $header && check_func $func "$@" && add_extralibs "$@"
1151 }
1152
1153 check_lib2(){
1154     log check_lib2 "$@"
1155     headers="$1"
1156     funcs="$2"
1157     shift 2
1158     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1159 }
1160
1161 check_lib_cpp(){
1162     log check_lib_cpp "$@"
1163     headers="$1"
1164     classes="$2"
1165     shift 2
1166     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1167 }
1168
1169 check_pkg_config(){
1170     log check_pkg_config "$@"
1171     pkgandversion="$1"
1172     pkg="${1%% *}"
1173     headers="$2"
1174     funcs="$3"
1175     shift 3
1176     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1177     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1178     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1179     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1180         set_safe "${pkg}_cflags" $pkg_cflags   &&
1181         set_safe "${pkg}_libs"   $pkg_libs
1182 }
1183
1184 check_exec(){
1185     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1186 }
1187
1188 check_exec_crash(){
1189     code=$(cat)
1190
1191     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1192     # are safe but may not be available everywhere.  Thus we use
1193     # raise(SIGTERM) instead.  The check is run in a subshell so we
1194     # can redirect the "Terminated" message from the shell.  SIGBUS
1195     # is not defined by standard C so it is used conditionally.
1196
1197     (check_exec "$@") >> $logfile 2>&1 <<EOF
1198 #include <signal.h>
1199 static void sighandler(int sig){
1200     raise(SIGTERM);
1201 }
1202 int foo(void){
1203     $code
1204 }
1205 int (*func_ptr)(void) = foo;
1206 int main(void){
1207     signal(SIGILL, sighandler);
1208     signal(SIGFPE, sighandler);
1209     signal(SIGSEGV, sighandler);
1210 #ifdef SIGBUS
1211     signal(SIGBUS, sighandler);
1212 #endif
1213     return func_ptr();
1214 }
1215 EOF
1216 }
1217
1218 check_type(){
1219     log check_type "$@"
1220     headers=$1
1221     type=$2
1222     shift 2
1223     disable_safe "$type"
1224     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1225 }
1226
1227 check_struct(){
1228     log check_struct "$@"
1229     headers=$1
1230     struct=$2
1231     member=$3
1232     shift 3
1233     disable_safe "${struct}_${member}"
1234     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1235         enable_safe "${struct}_${member}"
1236 }
1237
1238 check_builtin(){
1239     log check_builtin "$@"
1240     name=$1
1241     headers=$2
1242     builtin=$3
1243     shift 3
1244     disable "$name"
1245     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1246 }
1247
1248 check_compile_assert(){
1249     log check_compile_assert "$@"
1250     name=$1
1251     headers=$2
1252     condition=$3
1253     shift 3
1254     disable "$name"
1255     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1256 }
1257
1258 require(){
1259     name="$1"
1260     header="$2"
1261     func="$3"
1262     shift 3
1263     check_lib $header $func "$@" || die "ERROR: $name not found"
1264 }
1265
1266 require2(){
1267     name="$1"
1268     headers="$2"
1269     func="$3"
1270     shift 3
1271     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1272 }
1273
1274 require_cpp(){
1275     name="$1"
1276     headers="$2"
1277     classes="$3"
1278     shift 3
1279     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1280 }
1281
1282 use_pkg_config(){
1283     pkg="$1"
1284     check_pkg_config "$@" || return 1
1285     add_cflags    $(get_safe "${pkg}_cflags")
1286     add_extralibs $(get_safe "${pkg}_libs")
1287 }
1288
1289 require_pkg_config(){
1290     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1291 }
1292
1293 require_libfreetype(){
1294     log require_libfreetype "$@"
1295     pkg="freetype2"
1296     check_cmd $pkg_config --exists --print-errors $pkg \
1297       || die "ERROR: $pkg not found"
1298     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1299     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1300     {
1301         echo "#include <ft2build.h>"
1302         echo "#include FT_FREETYPE_H"
1303         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1304         echo "int main(void) { return 0; }"
1305     } | check_ld "cc" $pkg_cflags $pkg_libs \
1306       && set_safe "${pkg}_cflags" $pkg_cflags \
1307       && set_safe "${pkg}_libs"   $pkg_libs \
1308       || die "ERROR: $pkg not found"
1309     add_cflags    $(get_safe "${pkg}_cflags")
1310     add_extralibs $(get_safe "${pkg}_libs")
1311 }
1312
1313 hostcc_e(){
1314     eval printf '%s\\n' $HOSTCC_E
1315 }
1316
1317 hostcc_o(){
1318     eval printf '%s\\n' $HOSTCC_O
1319 }
1320
1321 check_host_cc(){
1322     log check_host_cc "$@"
1323     cat > $TMPC
1324     log_file $TMPC
1325     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1326 }
1327
1328 check_host_cpp(){
1329     log check_host_cpp "$@"
1330     cat > $TMPC
1331     log_file $TMPC
1332     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1333 }
1334
1335 check_host_cppflags(){
1336     log check_host_cppflags "$@"
1337     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1338 int x;
1339 EOF
1340 }
1341
1342 check_host_cflags(){
1343     log check_host_cflags "$@"
1344     set -- $($host_cflags_filter "$@")
1345     check_host_cc "$@" <<EOF && append host_cflags "$@"
1346 int x;
1347 EOF
1348 }
1349
1350 check_host_cpp_condition(){
1351     log check_host_cpp_condition "$@"
1352     header=$1
1353     condition=$2
1354     shift 2
1355     check_host_cpp "$@" <<EOF
1356 #include <$header>
1357 #if !($condition)
1358 #error "unsatisfied condition: $condition"
1359 #endif
1360 EOF
1361 }
1362
1363 cp_if_changed(){
1364     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1365     mkdir -p "$(dirname $2)"
1366     $cp_f "$1" "$2"
1367 }
1368
1369 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1370 # system-dependent things.
1371
1372 AVCODEC_COMPONENTS="
1373     bsfs
1374     decoders
1375     encoders
1376     hwaccels
1377     parsers
1378 "
1379
1380 AVDEVICE_COMPONENTS="
1381     indevs
1382     outdevs
1383 "
1384 AVFILTER_COMPONENTS="
1385     filters
1386 "
1387 AVFORMAT_COMPONENTS="
1388     demuxers
1389     muxers
1390     protocols
1391 "
1392
1393 AVRESAMPLE_COMPONENTS=""
1394 AVUTIL_COMPONENTS=""
1395
1396 COMPONENT_LIST="
1397     $AVCODEC_COMPONENTS
1398     $AVDEVICE_COMPONENTS
1399     $AVFILTER_COMPONENTS
1400     $AVFORMAT_COMPONENTS
1401     $AVRESAMPLE_COMPONENTS
1402     $AVUTIL_COMPONENTS
1403 "
1404
1405 EXAMPLE_LIST="
1406     avio_reading_example
1407     avio_dir_cmd_example
1408     decoding_encoding_example
1409     demuxing_decoding_example
1410     extract_mvs_example
1411     filter_audio_example
1412     filtering_audio_example
1413     filtering_video_example
1414     metadata_example
1415     muxing_example
1416     qsvdec_example
1417     remuxing_example
1418     resampling_audio_example
1419     scaling_video_example
1420     transcode_aac_example
1421     transcoding_example
1422 "
1423
1424 EXTERNAL_LIBRARY_LIST="
1425     avisynth
1426     bzlib
1427     chromaprint
1428     crystalhd
1429     decklink
1430     frei0r
1431     gcrypt
1432     gmp
1433     gnutls
1434     iconv
1435     ladspa
1436     libass
1437     libbluray
1438     libbs2b
1439     libcaca
1440     libcdio
1441     libcelt
1442     libdc1394
1443     libdcadec
1444     libfaac
1445     libfdk_aac
1446     libflite
1447     libfontconfig
1448     libfreetype
1449     libfribidi
1450     libgme
1451     libgsm
1452     libiec61883
1453     libilbc
1454     libkvazaar
1455     libmfx
1456     libmodplug
1457     libmp3lame
1458     libnut
1459     libopencore_amrnb
1460     libopencore_amrwb
1461     libopencv
1462     libopenh264
1463     libopenjpeg
1464     libopus
1465     libpulse
1466     librtmp
1467     librubberband
1468     libschroedinger
1469     libshine
1470     libsmbclient
1471     libsnappy
1472     libsoxr
1473     libspeex
1474     libssh
1475     libtesseract
1476     libtheora
1477     libtwolame
1478     libutvideo
1479     libv4l2
1480     libvidstab
1481     libvo_amrwbenc
1482     libvorbis
1483     libvpx
1484     libwavpack
1485     libwebp
1486     libx264
1487     libx265
1488     libxavs
1489     libxcb
1490     libxcb_shm
1491     libxcb_shape
1492     libxcb_xfixes
1493     libxvid
1494     libzimg
1495     libzmq
1496     libzvbi
1497     lzma
1498     mmal
1499     netcdf
1500     nvenc
1501     openal
1502     opencl
1503     opengl
1504     openssl
1505     schannel
1506     sdl
1507     securetransport
1508     x11grab
1509     xlib
1510     zlib
1511 "
1512
1513 DOCUMENT_LIST="
1514     doc
1515     htmlpages
1516     manpages
1517     podpages
1518     txtpages
1519 "
1520
1521 FEATURE_LIST="
1522     ftrapv
1523     gray
1524     hardcoded_tables
1525     runtime_cpudetect
1526     safe_bitstream_reader
1527     shared
1528     small
1529     static
1530     swscale_alpha
1531 "
1532
1533 HWACCEL_LIST="
1534     d3d11va
1535     dxva2
1536     vaapi
1537     vda
1538     vdpau
1539     videotoolbox
1540     xvmc
1541 "
1542
1543 LIBRARY_LIST="
1544     avcodec
1545     avdevice
1546     avfilter
1547     avformat
1548     avresample
1549     avutil
1550     postproc
1551     swresample
1552     swscale
1553 "
1554
1555 LICENSE_LIST="
1556     gpl
1557     nonfree
1558     version3
1559 "
1560
1561 PROGRAM_LIST="
1562     ffplay
1563     ffprobe
1564     ffserver
1565     ffmpeg
1566 "
1567
1568 SUBSYSTEM_LIST="
1569     dct
1570     dwt
1571     error_resilience
1572     faan
1573     fast_unaligned
1574     fft
1575     lsp
1576     lzo
1577     mdct
1578     pixelutils
1579     network
1580     rdft
1581 "
1582
1583 CONFIG_LIST="
1584     $COMPONENT_LIST
1585     $DOCUMENT_LIST
1586     $EXAMPLE_LIST
1587     $EXTERNAL_LIBRARY_LIST
1588     $FEATURE_LIST
1589     $HWACCEL_LIST
1590     $LICENSE_LIST
1591     $LIBRARY_LIST
1592     $PROGRAM_LIST
1593     $SUBSYSTEM_LIST
1594     fontconfig
1595     incompatible_libav_abi
1596     memalign_hack
1597     memory_poisoning
1598     neon_clobber_test
1599     pic
1600     pod2man
1601     raise_major
1602     thumb
1603     valgrind_backtrace
1604     xmm_clobber_test
1605 "
1606
1607 THREADS_LIST="
1608     pthreads
1609     os2threads
1610     w32threads
1611 "
1612
1613 ATOMICS_LIST="
1614     atomics_gcc
1615     atomics_suncc
1616     atomics_win32
1617 "
1618
1619 ARCH_LIST="
1620     aarch64
1621     alpha
1622     arm
1623     avr32
1624     avr32_ap
1625     avr32_uc
1626     bfin
1627     ia64
1628     m68k
1629     mips
1630     mips64
1631     parisc
1632     ppc
1633     ppc64
1634     s390
1635     sh4
1636     sparc
1637     sparc64
1638     tilegx
1639     tilepro
1640     tomi
1641     x86
1642     x86_32
1643     x86_64
1644 "
1645
1646 ARCH_EXT_LIST_ARM="
1647     armv5te
1648     armv6
1649     armv6t2
1650     armv8
1651     neon
1652     vfp
1653     vfpv3
1654     setend
1655 "
1656
1657 ARCH_EXT_LIST_MIPS="
1658     mipsfpu
1659     mips32r2
1660     mips64r2
1661     mips32r6
1662     mips64r6
1663     mipsdsp
1664     mipsdspr2
1665     msa
1666 "
1667
1668 ARCH_EXT_LIST_LOONGSON="
1669     loongson2
1670     loongson3
1671     mmi
1672 "
1673
1674 ARCH_EXT_LIST_X86_SIMD="
1675     aesni
1676     amd3dnow
1677     amd3dnowext
1678     avx
1679     avx2
1680     fma3
1681     fma4
1682     mmx
1683     mmxext
1684     sse
1685     sse2
1686     sse3
1687     sse4
1688     sse42
1689     ssse3
1690     xop
1691 "
1692
1693 ARCH_EXT_LIST_PPC="
1694     altivec
1695     dcbzl
1696     ldbrx
1697     power8
1698     ppc4xx
1699     vsx
1700 "
1701
1702 ARCH_EXT_LIST_X86="
1703     $ARCH_EXT_LIST_X86_SIMD
1704     cpunop
1705     i686
1706 "
1707
1708 ARCH_EXT_LIST="
1709     $ARCH_EXT_LIST_ARM
1710     $ARCH_EXT_LIST_PPC
1711     $ARCH_EXT_LIST_X86
1712     $ARCH_EXT_LIST_MIPS
1713     $ARCH_EXT_LIST_LOONGSON
1714 "
1715
1716 ARCH_FEATURES="
1717     aligned_stack
1718     fast_64bit
1719     fast_clz
1720     fast_cmov
1721     local_aligned_8
1722     local_aligned_16
1723     local_aligned_32
1724     simd_align_16
1725 "
1726
1727 BUILTIN_LIST="
1728     atomic_cas_ptr
1729     atomic_compare_exchange
1730     machine_rw_barrier
1731     MemoryBarrier
1732     mm_empty
1733     rdtsc
1734     sarestart
1735     sync_val_compare_and_swap
1736 "
1737 HAVE_LIST_CMDLINE="
1738     inline_asm
1739     symver
1740     yasm
1741 "
1742
1743 HAVE_LIST_PUB="
1744     bigendian
1745     fast_unaligned
1746     incompatible_libav_abi
1747 "
1748
1749 HEADERS_LIST="
1750     alsa_asoundlib_h
1751     altivec_h
1752     arpa_inet_h
1753     asm_types_h
1754     cdio_paranoia_h
1755     cdio_paranoia_paranoia_h
1756     dev_bktr_ioctl_bt848_h
1757     dev_bktr_ioctl_meteor_h
1758     dev_ic_bt8xx_h
1759     dev_video_bktr_ioctl_bt848_h
1760     dev_video_meteor_ioctl_meteor_h
1761     direct_h
1762     dirent_h
1763     dlfcn_h
1764     d3d11_h
1765     dxva_h
1766     ES2_gl_h
1767     gsm_h
1768     io_h
1769     mach_mach_time_h
1770     machine_ioctl_bt848_h
1771     machine_ioctl_meteor_h
1772     malloc_h
1773     opencv2_core_core_c_h
1774     openjpeg_2_1_openjpeg_h
1775     openjpeg_2_0_openjpeg_h
1776     openjpeg_1_5_openjpeg_h
1777     OpenGL_gl3_h
1778     poll_h
1779     sndio_h
1780     soundcard_h
1781     sys_mman_h
1782     sys_param_h
1783     sys_resource_h
1784     sys_select_h
1785     sys_soundcard_h
1786     sys_time_h
1787     sys_un_h
1788     sys_videoio_h
1789     termios_h
1790     udplite_h
1791     unistd_h
1792     valgrind_valgrind_h
1793     windows_h
1794     winsock2_h
1795 "
1796
1797 INTRINSICS_LIST="
1798     intrinsics_neon
1799 "
1800
1801 COMPLEX_FUNCS="
1802     cabs
1803     cexp
1804 "
1805
1806 MATH_FUNCS="
1807     atanf
1808     atan2f
1809     cbrt
1810     cbrtf
1811     copysign
1812     cosf
1813     erf
1814     exp2
1815     exp2f
1816     expf
1817     hypot
1818     isfinite
1819     isinf
1820     isnan
1821     ldexpf
1822     llrint
1823     llrintf
1824     log2
1825     log2f
1826     log10f
1827     lrint
1828     lrintf
1829     powf
1830     rint
1831     round
1832     roundf
1833     sinf
1834     trunc
1835     truncf
1836 "
1837
1838 SYSTEM_FUNCS="
1839     access
1840     aligned_malloc
1841     arc4random
1842     clock_gettime
1843     closesocket
1844     CommandLineToArgvW
1845     CoTaskMemFree
1846     CryptGenRandom
1847     dlopen
1848     fcntl
1849     flt_lim
1850     fork
1851     getaddrinfo
1852     gethrtime
1853     getopt
1854     GetProcessAffinityMask
1855     GetProcessMemoryInfo
1856     GetProcessTimes
1857     getrusage
1858     GetSystemTimeAsFileTime
1859     gettimeofday
1860     glob
1861     glXGetProcAddress
1862     gmtime_r
1863     inet_aton
1864     isatty
1865     jack_port_get_latency_range
1866     kbhit
1867     localtime_r
1868     lstat
1869     lzo1x_999_compress
1870     mach_absolute_time
1871     MapViewOfFile
1872     memalign
1873     mkstemp
1874     mmap
1875     mprotect
1876     nanosleep
1877     PeekNamedPipe
1878     posix_memalign
1879     pthread_cancel
1880     sched_getaffinity
1881     SetConsoleTextAttribute
1882     SetConsoleCtrlHandler
1883     setmode
1884     setrlimit
1885     Sleep
1886     strerror_r
1887     sysconf
1888     sysctl
1889     usleep
1890     UTGetOSTypeFromString
1891     VirtualAlloc
1892     wglGetProcAddress
1893 "
1894
1895 TOOLCHAIN_FEATURES="
1896     as_dn_directive
1897     as_func
1898     as_object_arch
1899     asm_mod_q
1900     attribute_may_alias
1901     attribute_packed
1902     ebp_available
1903     ebx_available
1904     gnu_as
1905     gnu_windres
1906     ibm_asm
1907     inline_asm_direct_symbol_refs
1908     inline_asm_labels
1909     inline_asm_nonlocal_labels
1910     pragma_deprecated
1911     rsync_contimeout
1912     symver_asm_label
1913     symver_gnu_asm
1914     vfp_args
1915     xform_asm
1916     xmm_clobbers
1917 "
1918
1919 TYPES_LIST="
1920     CONDITION_VARIABLE_Ptr
1921     socklen_t
1922     struct_addrinfo
1923     struct_group_source_req
1924     struct_ip_mreq_source
1925     struct_ipv6_mreq
1926     struct_pollfd
1927     struct_rusage_ru_maxrss
1928     struct_sctp_event_subscribe
1929     struct_sockaddr_in6
1930     struct_sockaddr_sa_len
1931     struct_sockaddr_storage
1932     struct_stat_st_mtim_tv_nsec
1933     struct_v4l2_frmivalenum_discrete
1934 "
1935
1936 HAVE_LIST="
1937     $ARCH_EXT_LIST
1938     $(add_suffix _external $ARCH_EXT_LIST)
1939     $(add_suffix _inline   $ARCH_EXT_LIST)
1940     $ARCH_FEATURES
1941     $ATOMICS_LIST
1942     $BUILTIN_LIST
1943     $COMPLEX_FUNCS
1944     $HAVE_LIST_CMDLINE
1945     $HAVE_LIST_PUB
1946     $HEADERS_LIST
1947     $INTRINSICS_LIST
1948     $MATH_FUNCS
1949     $SYSTEM_FUNCS
1950     $THREADS_LIST
1951     $TOOLCHAIN_FEATURES
1952     $TYPES_LIST
1953     atomics_native
1954     dos_paths
1955     dxva2_lib
1956     dxva2api_cobj
1957     libc_msvcrt
1958     libdc1394_1
1959     libdc1394_2
1960     makeinfo
1961     makeinfo_html
1962     perl
1963     pod2man
1964     sdl
1965     section_data_rel_ro
1966     texi2html
1967     threads
1968     vaapi_x11
1969     vdpau_x11
1970     winrt
1971     xlib
1972 "
1973
1974 # options emitted with CONFIG_ prefix but not available on the command line
1975 CONFIG_EXTRA="
1976     aandcttables
1977     ac3dsp
1978     audio_frame_queue
1979     audiodsp
1980     blockdsp
1981     bswapdsp
1982     cabac
1983     dirac_parse
1984     dvprofile
1985     exif
1986     faandct
1987     faanidct
1988     fdctdsp
1989     flacdsp
1990     fmtconvert
1991     frame_thread_encoder
1992     g722dsp
1993     golomb
1994     gplv3
1995     h263dsp
1996     h264chroma
1997     h264dsp
1998     h264pred
1999     h264qpel
2000     hpeldsp
2001     huffman
2002     huffyuvdsp
2003     huffyuvencdsp
2004     idctdsp
2005     iirfilter
2006     imdct15
2007     intrax8
2008     ividsp
2009     jpegtables
2010     lgplv3
2011     libx262
2012     llauddsp
2013     llviddsp
2014     lpc
2015     lzf
2016     me_cmp
2017     mpeg_er
2018     mpegaudio
2019     mpegaudiodsp
2020     mpegvideo
2021     mpegvideoenc
2022     mss34dsp
2023     pixblockdsp
2024     qpeldsp
2025     qsv
2026     qsvdec
2027     qsvenc
2028     rangecoder
2029     riffdec
2030     riffenc
2031     rtpdec
2032     rtpenc_chain
2033     rv34dsp
2034     sinewin
2035     snappy
2036     startcode
2037     texturedsp
2038     texturedspenc
2039     tpeldsp
2040     videodsp
2041     vp3dsp
2042     vp56dsp
2043     vp8dsp
2044     wma_freqs
2045     wmv2dsp
2046 "
2047
2048 CMDLINE_SELECT="
2049     $ARCH_EXT_LIST
2050     $CONFIG_LIST
2051     $HAVE_LIST_CMDLINE
2052     $THREADS_LIST
2053     asm
2054     cross_compile
2055     debug
2056     extra_warnings
2057     logging
2058     lto
2059     optimizations
2060     rpath
2061     stripping
2062 "
2063
2064 PATHS_LIST="
2065     bindir
2066     datadir
2067     docdir
2068     incdir
2069     libdir
2070     mandir
2071     pkgconfigdir
2072     prefix
2073     shlibdir
2074 "
2075
2076 CMDLINE_SET="
2077     $PATHS_LIST
2078     ar
2079     arch
2080     as
2081     assert_level
2082     build_suffix
2083     cc
2084     objcc
2085     cpu
2086     cross_prefix
2087     custom_allocator
2088     cxx
2089     dep_cc
2090     doxygen
2091     env
2092     extra_version
2093     gas
2094     host_cc
2095     host_cflags
2096     host_ld
2097     host_ldflags
2098     host_libs
2099     host_os
2100     install
2101     ld
2102     logfile
2103     malloc_prefix
2104     nm
2105     optflags
2106     pkg_config
2107     pkg_config_flags
2108     progs_suffix
2109     random_seed
2110     ranlib
2111     samples
2112     strip
2113     sws_max_filter_size
2114     sysinclude
2115     sysroot
2116     target_exec
2117     target_os
2118     target_path
2119     target_samples
2120     tempprefix
2121     toolchain
2122     valgrind
2123     yasmexe
2124 "
2125
2126 CMDLINE_APPEND="
2127     extra_cflags
2128     extra_cxxflags
2129     extra_objcflags
2130     host_cppflags
2131 "
2132
2133 # code dependency declarations
2134
2135 # architecture extensions
2136
2137 armv5te_deps="arm"
2138 armv6_deps="arm"
2139 armv6t2_deps="arm"
2140 armv8_deps="aarch64"
2141 neon_deps_any="aarch64 arm"
2142 intrinsics_neon_deps="neon"
2143 vfp_deps_any="aarch64 arm"
2144 vfpv3_deps="vfp"
2145 setend_deps="arm"
2146
2147 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2148
2149 mipsfpu_deps="mips"
2150 mipsdsp_deps="mips"
2151 mipsdspr2_deps="mips"
2152 mips32r2_deps="mips"
2153 mips32r6_deps="mips"
2154 mips64r2_deps="mips"
2155 mips64r6_deps="mips"
2156 msa_deps="mips"
2157 mmi_deps="mips"
2158
2159 altivec_deps="ppc"
2160 dcbzl_deps="ppc"
2161 ldbrx_deps="ppc"
2162 ppc4xx_deps="ppc"
2163 vsx_deps="altivec"
2164 power8_deps="vsx"
2165
2166 cpunop_deps="i686"
2167 x86_64_select="i686"
2168 x86_64_suggest="fast_cmov"
2169
2170 amd3dnow_deps="mmx"
2171 amd3dnowext_deps="amd3dnow"
2172 i686_deps="x86"
2173 mmx_deps="x86"
2174 mmxext_deps="mmx"
2175 sse_deps="mmxext"
2176 sse2_deps="sse"
2177 sse3_deps="sse2"
2178 ssse3_deps="sse3"
2179 sse4_deps="ssse3"
2180 sse42_deps="sse4"
2181 aesni_deps="sse42"
2182 avx_deps="sse42"
2183 xop_deps="avx"
2184 fma3_deps="avx"
2185 fma4_deps="avx"
2186 avx2_deps="avx"
2187
2188 mmx_external_deps="yasm"
2189 mmx_inline_deps="inline_asm"
2190 mmx_suggest="mmx_external mmx_inline"
2191
2192 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2193     eval dep=\$${ext}_deps
2194     eval ${ext}_external_deps='"${dep}_external"'
2195     eval ${ext}_inline_deps='"${dep}_inline"'
2196     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2197 done
2198
2199 aligned_stack_if_any="aarch64 ppc x86"
2200 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2201 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2202 fast_unaligned_if_any="aarch64 ppc x86"
2203 simd_align_16_if_any="altivec neon sse"
2204
2205 # system capabilities
2206 symver_if_any="symver_asm_label symver_gnu_asm"
2207 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2208
2209 # threading support
2210 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2211 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2212 atomics_win32_if="MemoryBarrier"
2213 atomics_native_if_any="$ATOMICS_LIST"
2214 w32threads_deps="atomics_native"
2215 threads_if_any="$THREADS_LIST"
2216
2217 # subsystems
2218 dct_select="rdft"
2219 dirac_parse_select="golomb"
2220 error_resilience_select="me_cmp"
2221 faandct_deps="faan fdctdsp"
2222 faanidct_deps="faan idctdsp"
2223 frame_thread_encoder_deps="encoders threads"
2224 intrax8_select="error_resilience"
2225 mdct_select="fft"
2226 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2227 mpeg_er_select="error_resilience"
2228 mpegaudio_select="mpegaudiodsp"
2229 mpegaudiodsp_select="dct"
2230 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2231 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2232 qsvdec_select="qsv"
2233 qsvenc_select="qsv"
2234 rdft_select="fft"
2235
2236 # decoders / encoders
2237 aac_decoder_select="imdct15 mdct sinewin"
2238 aac_fixed_decoder_select="mdct sinewin"
2239 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2240 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2241 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2242 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2243 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2244 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2245 adpcm_g722_decoder_select="g722dsp"
2246 adpcm_g722_encoder_select="g722dsp"
2247 aic_decoder_select="golomb idctdsp"
2248 alac_encoder_select="lpc"
2249 als_decoder_select="bswapdsp"
2250 amrnb_decoder_select="lsp"
2251 amrwb_decoder_select="lsp"
2252 amv_decoder_select="sp5x_decoder exif"
2253 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2254 ape_decoder_select="bswapdsp llauddsp"
2255 apng_decoder_select="zlib"
2256 apng_encoder_select="huffyuvencdsp zlib"
2257 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2258 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2259 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2260 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2261 atrac1_decoder_select="mdct sinewin"
2262 atrac3_decoder_select="mdct"
2263 atrac3p_decoder_select="mdct sinewin"
2264 avrn_decoder_select="exif jpegtables"
2265 bink_decoder_select="blockdsp hpeldsp"
2266 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2267 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2268 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2269 cllc_decoder_select="bswapdsp"
2270 comfortnoise_encoder_select="lpc"
2271 cook_decoder_select="audiodsp mdct sinewin"
2272 cscd_decoder_select="lzo"
2273 cscd_decoder_suggest="zlib"
2274 dca_decoder_select="mdct"
2275 dds_decoder_select="texturedsp"
2276 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2277 dnxhd_decoder_select="blockdsp idctdsp"
2278 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2279 dvvideo_decoder_select="dvprofile idctdsp"
2280 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2281 dxa_decoder_select="zlib"
2282 dxv_decoder_select="lzf texturedsp"
2283 eac3_decoder_select="ac3_decoder"
2284 eac3_encoder_select="ac3_encoder"
2285 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2286 eatgq_decoder_select="aandcttables"
2287 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2288 exr_decoder_select="zlib"
2289 ffv1_decoder_select="golomb rangecoder"
2290 ffv1_encoder_select="rangecoder"
2291 ffvhuff_decoder_select="huffyuv_decoder"
2292 ffvhuff_encoder_select="huffyuv_encoder"
2293 fic_decoder_select="golomb"
2294 flac_decoder_select="flacdsp golomb"
2295 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2296 flashsv2_decoder_select="zlib"
2297 flashsv2_encoder_select="zlib"
2298 flashsv_decoder_select="zlib"
2299 flashsv_encoder_select="zlib"
2300 flv_decoder_select="h263_decoder"
2301 flv_encoder_select="h263_encoder"
2302 fourxm_decoder_select="blockdsp bswapdsp"
2303 fraps_decoder_select="bswapdsp huffman"
2304 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2305 g729_decoder_select="audiodsp"
2306 h261_decoder_select="mpegvideo"
2307 h261_encoder_select="aandcttables mpegvideoenc"
2308 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2309 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2310 h263i_decoder_select="h263_decoder"
2311 h263p_decoder_select="h263_decoder"
2312 h263p_encoder_select="h263_encoder"
2313 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2314 h264_decoder_suggest="error_resilience"
2315 h264_qsv_decoder_deps="libmfx"
2316 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2317 h264_qsv_encoder_deps="libmfx"
2318 h264_qsv_encoder_select="qsvenc"
2319 hap_decoder_select="snappy texturedsp"
2320 hap_encoder_deps="libsnappy"
2321 hap_encoder_select="texturedspenc"
2322 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2323 hevc_qsv_decoder_deps="libmfx"
2324 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2325 hevc_qsv_encoder_deps="libmfx"
2326 hevc_qsv_encoder_select="qsvenc"
2327 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2328 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2329 iac_decoder_select="imc_decoder"
2330 imc_decoder_select="bswapdsp fft mdct sinewin"
2331 indeo3_decoder_select="hpeldsp"
2332 indeo4_decoder_select="ividsp"
2333 indeo5_decoder_select="ividsp"
2334 interplay_video_decoder_select="hpeldsp"
2335 jpegls_decoder_select="golomb mjpeg_decoder"
2336 jpegls_encoder_select="golomb"
2337 jv_decoder_select="blockdsp"
2338 lagarith_decoder_select="huffyuvdsp"
2339 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2340 loco_decoder_select="golomb"
2341 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2342 metasound_decoder_select="lsp mdct sinewin"
2343 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2344 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2345 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2346 mjpegb_decoder_select="mjpeg_decoder"
2347 mlp_decoder_select="mlp_parser"
2348 motionpixels_decoder_select="bswapdsp"
2349 mp1_decoder_select="mpegaudio"
2350 mp1float_decoder_select="mpegaudio"
2351 mp2_decoder_select="mpegaudio"
2352 mp2float_decoder_select="mpegaudio"
2353 mp3_decoder_select="mpegaudio"
2354 mp3adu_decoder_select="mpegaudio"
2355 mp3adufloat_decoder_select="mpegaudio"
2356 mp3float_decoder_select="mpegaudio"
2357 mp3on4_decoder_select="mpegaudio"
2358 mp3on4float_decoder_select="mpegaudio"
2359 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2360 mpc8_decoder_select="mpegaudiodsp"
2361 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2362 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2363 mpegvideo_decoder_select="mpegvideo"
2364 mpeg1video_decoder_select="mpegvideo"
2365 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2366 mpeg2video_decoder_select="mpegvideo"
2367 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2368 mpeg2_qsv_decoder_deps="libmfx"
2369 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2370 mpeg2_qsv_encoder_deps="libmfx"
2371 mpeg2_qsv_encoder_select="qsvenc"
2372 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2373 mpeg4_encoder_select="h263_encoder"
2374 msa1_decoder_select="mss34dsp"
2375 msmpeg4v1_decoder_select="h263_decoder"
2376 msmpeg4v2_decoder_select="h263_decoder"
2377 msmpeg4v2_encoder_select="h263_encoder"
2378 msmpeg4v3_decoder_select="h263_decoder"
2379 msmpeg4v3_encoder_select="h263_encoder"
2380 mss2_decoder_select="vc1_decoder"
2381 mts2_decoder_select="mss34dsp"
2382 mxpeg_decoder_select="mjpeg_decoder"
2383 nellymoser_decoder_select="mdct sinewin"
2384 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2385 nuv_decoder_select="idctdsp lzo"
2386 on2avc_decoder_select="mdct"
2387 opus_decoder_deps="swresample"
2388 opus_decoder_select="imdct15"
2389 png_decoder_select="zlib"
2390 png_encoder_select="huffyuvencdsp zlib"
2391 prores_decoder_select="blockdsp idctdsp"
2392 prores_encoder_select="fdctdsp"
2393 qcelp_decoder_select="lsp"
2394 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2395 ra_144_decoder_select="audiodsp"
2396 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2397 ralf_decoder_select="golomb"
2398 rawvideo_decoder_select="bswapdsp"
2399 rscc_decoder_select="zlib"
2400 rtjpeg_decoder_select="me_cmp"
2401 rv10_decoder_select="h263_decoder"
2402 rv10_encoder_select="h263_encoder"
2403 rv20_decoder_select="h263_decoder"
2404 rv20_encoder_select="h263_encoder"
2405 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2406 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2407 screenpresso_decoder_select="zlib"
2408 shorten_decoder_select="golomb"
2409 sipr_decoder_select="lsp"
2410 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2411 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2412 sonic_decoder_select="golomb rangecoder"
2413 sonic_encoder_select="golomb rangecoder"
2414 sonic_ls_encoder_select="golomb rangecoder"
2415 sp5x_decoder_select="mjpeg_decoder"
2416 svq1_decoder_select="hpeldsp"
2417 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2418 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2419 svq3_decoder_suggest="zlib"
2420 tak_decoder_select="audiodsp"
2421 tdsc_decoder_select="zlib mjpeg_decoder"
2422 theora_decoder_select="vp3_decoder"
2423 thp_decoder_select="mjpeg_decoder"
2424 tiff_decoder_suggest="zlib lzma"
2425 tiff_encoder_suggest="zlib"
2426 truehd_decoder_select="mlp_parser"
2427 truemotion2_decoder_select="bswapdsp"
2428 truespeech_decoder_select="bswapdsp"
2429 tscc_decoder_select="zlib"
2430 twinvq_decoder_select="mdct lsp sinewin"
2431 txd_decoder_select="texturedsp"
2432 utvideo_decoder_select="bswapdsp"
2433 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2434 vble_decoder_select="huffyuvdsp"
2435 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2436 vc1_qsv_decoder_deps="libmfx"
2437 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2438 vc1image_decoder_select="vc1_decoder"
2439 vorbis_decoder_select="mdct"
2440 vorbis_encoder_select="mdct"
2441 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2442 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2443 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2444 vp6a_decoder_select="vp6_decoder"
2445 vp6f_decoder_select="vp6_decoder"
2446 vp7_decoder_select="h264pred videodsp vp8dsp"
2447 vp8_decoder_select="h264pred videodsp vp8dsp"
2448 vp9_decoder_select="videodsp vp9_parser"
2449 webp_decoder_select="vp8_decoder exif"
2450 wmalossless_decoder_select="llauddsp"
2451 wmapro_decoder_select="mdct sinewin wma_freqs"
2452 wmav1_decoder_select="mdct sinewin wma_freqs"
2453 wmav1_encoder_select="mdct sinewin wma_freqs"
2454 wmav2_decoder_select="mdct sinewin wma_freqs"
2455 wmav2_encoder_select="mdct sinewin wma_freqs"
2456 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2457 wmv1_decoder_select="h263_decoder"
2458 wmv1_encoder_select="h263_encoder"
2459 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2460 wmv2_encoder_select="h263_encoder wmv2dsp"
2461 wmv3_decoder_select="vc1_decoder"
2462 wmv3image_decoder_select="wmv3_decoder"
2463 xma1_decoder_select="wmapro_decoder"
2464 xma2_decoder_select="wmapro_decoder"
2465 zerocodec_decoder_select="zlib"
2466 zlib_decoder_select="zlib"
2467 zlib_encoder_select="zlib"
2468 zmbv_decoder_select="zlib"
2469 zmbv_encoder_select="zlib"
2470
2471 # hardware accelerators
2472 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2473 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2474 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2475 vaapi_deps="va_va_h"
2476 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2477 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2478 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2479 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2480 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2481 xvmc_deps="X11_extensions_XvMClib_h"
2482
2483 h263_vaapi_hwaccel_deps="vaapi"
2484 h263_vaapi_hwaccel_select="h263_decoder"
2485 h263_videotoolbox_hwaccel_deps="videotoolbox"
2486 h263_videotoolbox_hwaccel_select="h263_decoder"
2487 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2488 h264_d3d11va_hwaccel_deps="d3d11va"
2489 h264_d3d11va_hwaccel_select="h264_decoder"
2490 h264_dxva2_hwaccel_deps="dxva2"
2491 h264_dxva2_hwaccel_select="h264_decoder"
2492 h264_mmal_decoder_deps="mmal"
2493 h264_mmal_decoder_select="mmal"
2494 h264_mmal_hwaccel_deps="mmal"
2495 h264_qsv_hwaccel_deps="libmfx"
2496 h264_vaapi_hwaccel_deps="vaapi"
2497 h264_vaapi_hwaccel_select="h264_decoder"
2498 h264_vda_decoder_deps="vda"
2499 h264_vda_decoder_select="h264_decoder"
2500 h264_vda_hwaccel_deps="vda"
2501 h264_vda_hwaccel_select="h264_decoder"
2502 h264_vda_old_hwaccel_deps="vda"
2503 h264_vda_old_hwaccel_select="h264_decoder"
2504 h264_vdpau_decoder_deps="vdpau"
2505 h264_vdpau_decoder_select="h264_decoder"
2506 h264_vdpau_hwaccel_deps="vdpau"
2507 h264_vdpau_hwaccel_select="h264_decoder"
2508 h264_videotoolbox_hwaccel_deps="videotoolbox"
2509 h264_videotoolbox_hwaccel_select="h264_decoder"
2510 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2511 hevc_d3d11va_hwaccel_select="hevc_decoder"
2512 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2513 hevc_dxva2_hwaccel_select="hevc_decoder"
2514 hevc_qsv_hwaccel_deps="libmfx"
2515 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2516 hevc_vaapi_hwaccel_select="hevc_decoder"
2517 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2518 hevc_vdpau_hwaccel_select="hevc_decoder"
2519 mpeg_vdpau_decoder_deps="vdpau"
2520 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2521 mpeg_xvmc_hwaccel_deps="xvmc"
2522 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2523 mpeg1_vdpau_decoder_deps="vdpau"
2524 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2525 mpeg1_vdpau_hwaccel_deps="vdpau"
2526 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2527 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2528 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2529 mpeg1_xvmc_hwaccel_deps="xvmc"
2530 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2531 mpeg2_crystalhd_decoder_select="crystalhd"
2532 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2533 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2534 mpeg2_dxva2_hwaccel_deps="dxva2"
2535 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2536 mpeg2_mmal_decoder_deps="mmal"
2537 mpeg2_mmal_decoder_select="mmal"
2538 mpeg2_mmal_hwaccel_deps="mmal"
2539 mpeg2_qsv_hwaccel_deps="libmfx"
2540 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2541 mpeg2_vaapi_hwaccel_deps="vaapi"
2542 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2543 mpeg2_vdpau_hwaccel_deps="vdpau"
2544 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2545 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2546 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2547 mpeg2_xvmc_hwaccel_deps="xvmc"
2548 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2549 mpeg4_crystalhd_decoder_select="crystalhd"
2550 mpeg4_mmal_decoder_deps="mmal"
2551 mpeg4_mmal_decoder_select="mmal"
2552 mpeg4_mmal_hwaccel_deps="mmal"
2553 mpeg4_vaapi_hwaccel_deps="vaapi"
2554 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2555 mpeg4_vdpau_decoder_deps="vdpau"
2556 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2557 mpeg4_vdpau_hwaccel_deps="vdpau"
2558 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2559 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2560 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2561 msmpeg4_crystalhd_decoder_select="crystalhd"
2562 vc1_crystalhd_decoder_select="crystalhd"
2563 vc1_d3d11va_hwaccel_deps="d3d11va"
2564 vc1_d3d11va_hwaccel_select="vc1_decoder"
2565 vc1_dxva2_hwaccel_deps="dxva2"
2566 vc1_dxva2_hwaccel_select="vc1_decoder"
2567 vc1_mmal_decoder_deps="mmal"
2568 vc1_mmal_decoder_select="mmal"
2569 vc1_mmal_hwaccel_deps="mmal"
2570 vc1_qsv_hwaccel_deps="libmfx"
2571 vc1_qsv_hwaccel_select="qsvdec_vc1"
2572 vc1_vaapi_hwaccel_deps="vaapi"
2573 vc1_vaapi_hwaccel_select="vc1_decoder"
2574 vc1_vdpau_decoder_deps="vdpau"
2575 vc1_vdpau_decoder_select="vc1_decoder"
2576 vc1_vdpau_hwaccel_deps="vdpau"
2577 vc1_vdpau_hwaccel_select="vc1_decoder"
2578 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2579 vp9_d3d11va_hwaccel_select="vp9_decoder"
2580 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2581 vp9_dxva2_hwaccel_select="vp9_decoder"
2582 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2583 vp9_vaapi_hwaccel_select="vp9_decoder"
2584 wmv3_crystalhd_decoder_select="crystalhd"
2585 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2586 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2587 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2588 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2589 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2590
2591 # parsers
2592 h264_parser_select="h264_decoder"
2593 hevc_parser_select="golomb"
2594 mpegvideo_parser_select="mpegvideo"
2595 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2596 vc1_parser_select="mpegvideo startcode vc1_decoder"
2597
2598 # bitstream_filters
2599 mjpeg2jpeg_bsf_select="jpegtables"
2600
2601 # external libraries
2602 chromaprint_muxer_deps="chromaprint"
2603 libcelt_decoder_deps="libcelt"
2604 libdcadec_decoder_deps="libdcadec"
2605 libfaac_encoder_deps="libfaac"
2606 libfaac_encoder_select="audio_frame_queue"
2607 libfdk_aac_decoder_deps="libfdk_aac"
2608 libfdk_aac_encoder_deps="libfdk_aac"
2609 libfdk_aac_encoder_select="audio_frame_queue"
2610 libgme_demuxer_deps="libgme"
2611 libgsm_decoder_deps="libgsm"
2612 libgsm_encoder_deps="libgsm"
2613 libgsm_ms_decoder_deps="libgsm"
2614 libgsm_ms_encoder_deps="libgsm"
2615 libilbc_decoder_deps="libilbc"
2616 libilbc_encoder_deps="libilbc"
2617 libkvazaar_encoder_deps="libkvazaar"
2618 libmodplug_demuxer_deps="libmodplug"
2619 libmp3lame_encoder_deps="libmp3lame"
2620 libmp3lame_encoder_select="audio_frame_queue"
2621 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2622 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2623 libopencore_amrnb_encoder_select="audio_frame_queue"
2624 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2625 libopenh264_encoder_deps="libopenh264"
2626 libopenjpeg_decoder_deps="libopenjpeg"
2627 libopenjpeg_encoder_deps="libopenjpeg"
2628 libopus_decoder_deps="libopus"
2629 libopus_encoder_deps="libopus"
2630 libopus_encoder_select="audio_frame_queue"
2631 libschroedinger_decoder_deps="libschroedinger"
2632 libschroedinger_encoder_deps="libschroedinger"
2633 libshine_encoder_deps="libshine"
2634 libshine_encoder_select="audio_frame_queue"
2635 libspeex_decoder_deps="libspeex"
2636 libspeex_encoder_deps="libspeex"
2637 libspeex_encoder_select="audio_frame_queue"
2638 libtheora_encoder_deps="libtheora"
2639 libtwolame_encoder_deps="libtwolame"
2640 libutvideo_decoder_deps="libutvideo"
2641 libutvideo_encoder_deps="libutvideo"
2642 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2643 libvorbis_decoder_deps="libvorbis"
2644 libvorbis_encoder_deps="libvorbis"
2645 libvorbis_encoder_select="audio_frame_queue"
2646 libvpx_vp8_decoder_deps="libvpx"
2647 libvpx_vp8_encoder_deps="libvpx"
2648 libvpx_vp9_decoder_deps="libvpx"
2649 libvpx_vp9_encoder_deps="libvpx"
2650 libwavpack_encoder_deps="libwavpack"
2651 libwebp_encoder_deps="libwebp"
2652 libwebp_anim_encoder_deps="libwebp"
2653 libx262_encoder_deps="libx262"
2654 libx264_encoder_deps="libx264"
2655 libx264rgb_encoder_deps="libx264"
2656 libx264rgb_encoder_select="libx264_encoder"
2657 libx265_encoder_deps="libx265"
2658 libxavs_encoder_deps="libxavs"
2659 libxvid_encoder_deps="libxvid"
2660 libzvbi_teletext_decoder_deps="libzvbi"
2661 nvenc_encoder_deps="nvenc"
2662 nvenc_h264_encoder_deps="nvenc"
2663 nvenc_hevc_encoder_deps="nvenc"
2664
2665 # demuxers / muxers
2666 ac3_demuxer_select="ac3_parser"
2667 asf_demuxer_select="riffdec"
2668 asf_o_demuxer_select="riffdec"
2669 asf_muxer_select="riffenc"
2670 asf_stream_muxer_select="asf_muxer"
2671 avi_demuxer_select="riffdec exif"
2672 avi_muxer_select="riffenc"
2673 avisynth_demuxer_deps="avisynth"
2674 avisynth_demuxer_select="riffdec"
2675 caf_demuxer_select="riffdec"
2676 dash_muxer_select="mp4_muxer"
2677 dirac_demuxer_select="dirac_parser"
2678 dts_demuxer_select="dca_parser"
2679 dtshd_demuxer_select="dca_parser"
2680 dv_demuxer_select="dvprofile"
2681 dv_muxer_select="dvprofile"
2682 dxa_demuxer_select="riffdec"
2683 eac3_demuxer_select="ac3_parser"
2684 f4v_muxer_select="mov_muxer"
2685 flac_demuxer_select="flac_parser"
2686 hds_muxer_select="flv_muxer"
2687 hls_muxer_select="mpegts_muxer"
2688 image2_alias_pix_demuxer_select="image2_demuxer"
2689 image2_brender_pix_demuxer_select="image2_demuxer"
2690 ipod_muxer_select="mov_muxer"
2691 ismv_muxer_select="mov_muxer"
2692 libnut_demuxer_deps="libnut"
2693 libnut_muxer_deps="libnut"
2694 matroska_audio_muxer_select="matroska_muxer"
2695 matroska_demuxer_select="riffdec"
2696 matroska_demuxer_suggest="bzlib lzo zlib"
2697 matroska_muxer_select="riffenc"
2698 mmf_muxer_select="riffenc"
2699 mov_demuxer_select="riffdec"
2700 mov_demuxer_suggest="zlib"
2701 mov_muxer_select="riffenc rtpenc_chain"
2702 mp3_demuxer_select="mpegaudio_parser"
2703 mp4_muxer_select="mov_muxer"
2704 mpegts_muxer_select="adts_muxer latm_muxer"
2705 mpegtsraw_demuxer_select="mpegts_demuxer"
2706 mxf_d10_muxer_select="mxf_muxer"
2707 mxf_opatom_muxer_select="mxf_muxer"
2708 nut_muxer_select="riffenc"
2709 nuv_demuxer_select="riffdec"
2710 oga_muxer_select="ogg_muxer"
2711 ogg_demuxer_select="dirac_parse"
2712 opus_muxer_select="ogg_muxer"
2713 psp_muxer_select="mov_muxer"
2714 rtp_demuxer_select="sdp_demuxer"
2715 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2716 rtsp_demuxer_select="http_protocol rtpdec"
2717 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2718 sap_demuxer_select="sdp_demuxer"
2719 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2720 sdp_demuxer_select="rtpdec"
2721 smoothstreaming_muxer_select="ismv_muxer"
2722 spdif_muxer_select="aac_parser"
2723 spx_muxer_select="ogg_muxer"
2724 swf_demuxer_suggest="zlib"
2725 tak_demuxer_select="tak_parser"
2726 tg2_muxer_select="mov_muxer"
2727 tgp_muxer_select="mov_muxer"
2728 vobsub_demuxer_select="mpegps_demuxer"
2729 w64_demuxer_select="wav_demuxer"
2730 w64_muxer_select="wav_muxer"
2731 wav_demuxer_select="riffdec"
2732 wav_muxer_select="riffenc"
2733 webm_muxer_select="riffenc"
2734 wtv_demuxer_select="riffdec"
2735 wtv_muxer_select="riffenc"
2736 xmv_demuxer_select="riffdec"
2737 xwma_demuxer_select="riffdec"
2738
2739 # indevs / outdevs
2740 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2741 alsa_outdev_deps="alsa_asoundlib_h"
2742 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2743 avfoundation_indev_select="avfoundation"
2744 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2745 caca_outdev_deps="libcaca"
2746 decklink_indev_deps="decklink pthreads"
2747 decklink_indev_extralibs="-lstdc++"
2748 decklink_outdev_deps="decklink pthreads"
2749 decklink_outdev_extralibs="-lstdc++"
2750 dshow_indev_deps="IBaseFilter"
2751 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2752 dv1394_indev_deps="dv1394"
2753 dv1394_indev_select="dv_demuxer"
2754 fbdev_indev_deps="linux_fb_h"
2755 fbdev_outdev_deps="linux_fb_h"
2756 gdigrab_indev_deps="CreateDIBSection"
2757 gdigrab_indev_extralibs="-lgdi32"
2758 gdigrab_indev_select="bmp_decoder"
2759 iec61883_indev_deps="libiec61883"
2760 jack_indev_deps="jack_jack_h sem_timedwait"
2761 lavfi_indev_deps="avfilter"
2762 libcdio_indev_deps="libcdio"
2763 libdc1394_indev_deps="libdc1394"
2764 libv4l2_indev_deps="libv4l2"
2765 openal_indev_deps="openal"
2766 opengl_outdev_deps="opengl"
2767 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2768 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2769 pulse_indev_deps="libpulse"
2770 pulse_outdev_deps="libpulse"
2771 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2772 qtkit_indev_select="qtkit"
2773 sdl_outdev_deps="sdl"
2774 sndio_indev_deps="sndio_h"
2775 sndio_outdev_deps="sndio_h"
2776 v4l_indev_deps="linux_videodev_h"
2777 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2778 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2779 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2780 vfwcap_indev_extralibs="-lavicap32"
2781 x11grab_indev_deps="x11grab"
2782 x11grab_xcb_indev_deps="libxcb"
2783 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2784 xv_outdev_extralibs="-lXv -lX11 -lXext"
2785
2786 # protocols
2787 async_protocol_deps="threads"
2788 bluray_protocol_deps="libbluray"
2789 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2790 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2791 ffrtmpcrypt_protocol_select="tcp_protocol"
2792 ffrtmphttp_protocol_deps="!librtmp_protocol"
2793 ffrtmphttp_protocol_select="http_protocol"
2794 ftp_protocol_select="tcp_protocol"
2795 gopher_protocol_select="network"
2796 http_protocol_select="tcp_protocol"
2797 httpproxy_protocol_select="tcp_protocol"
2798 https_protocol_select="tls_protocol"
2799 icecast_protocol_select="http_protocol"
2800 librtmp_protocol_deps="librtmp"
2801 librtmpe_protocol_deps="librtmp"
2802 librtmps_protocol_deps="librtmp"
2803 librtmpt_protocol_deps="librtmp"
2804 librtmpte_protocol_deps="librtmp"
2805 libsmbclient_protocol_deps="libsmbclient gplv3"
2806 libssh_protocol_deps="libssh"
2807 mmsh_protocol_select="http_protocol"
2808 mmst_protocol_select="network"
2809 rtmp_protocol_deps="!librtmp_protocol"
2810 rtmp_protocol_select="tcp_protocol"
2811 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2812 rtmps_protocol_deps="!librtmp_protocol"
2813 rtmps_protocol_select="tls_protocol"
2814 rtmpt_protocol_select="ffrtmphttp_protocol"
2815 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2816 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2817 rtp_protocol_select="udp_protocol"
2818 sctp_protocol_deps="struct_sctp_event_subscribe"
2819 sctp_protocol_select="network"
2820 srtp_protocol_select="rtp_protocol"
2821 tcp_protocol_select="network"
2822 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2823 tls_gnutls_protocol_select="tcp_protocol"
2824 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2825 tls_openssl_protocol_select="tcp_protocol"
2826 tls_schannel_protocol_deps="schannel"
2827 tls_schannel_protocol_select="tcp_protocol"
2828 tls_securetransport_protocol_deps="securetransport"
2829 tls_securetransport_protocol_select="tcp_protocol"
2830 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2831 udp_protocol_select="network"
2832 udplite_protocol_select="network"
2833 unix_protocol_deps="sys_un_h"
2834 unix_protocol_select="network"
2835
2836 # filters
2837 afftfilt_filter_deps="avcodec"
2838 afftfilt_filter_select="fft"
2839 amovie_filter_deps="avcodec avformat"
2840 aresample_filter_deps="swresample"
2841 ass_filter_deps="libass"
2842 asyncts_filter_deps="avresample"
2843 atempo_filter_deps="avcodec"
2844 atempo_filter_select="rdft"
2845 azmq_filter_deps="libzmq"
2846 blackframe_filter_deps="gpl"
2847 boxblur_filter_deps="gpl"
2848 bs2b_filter_deps="libbs2b"
2849 colormatrix_filter_deps="gpl"
2850 cover_rect_filter_deps="avcodec avformat gpl"
2851 cropdetect_filter_deps="gpl"
2852 delogo_filter_deps="gpl"
2853 deshake_filter_select="pixelutils"
2854 drawtext_filter_deps="libfreetype"
2855 ebur128_filter_deps="gpl"
2856 eq_filter_deps="gpl"
2857 fftfilt_filter_deps="avcodec"
2858 fftfilt_filter_select="rdft"
2859 find_rect_filter_deps="avcodec avformat gpl"
2860 flite_filter_deps="libflite"
2861 frei0r_filter_deps="frei0r dlopen"
2862 frei0r_src_filter_deps="frei0r dlopen"
2863 fspp_filter_deps="gpl"
2864 geq_filter_deps="gpl"
2865 histeq_filter_deps="gpl"
2866 hqdn3d_filter_deps="gpl"
2867 interlace_filter_deps="gpl"
2868 kerndeint_filter_deps="gpl"
2869 ladspa_filter_deps="ladspa dlopen"
2870 mcdeint_filter_deps="avcodec gpl"
2871 movie_filter_deps="avcodec avformat"
2872 mpdecimate_filter_deps="gpl"
2873 mpdecimate_filter_select="pixelutils"
2874 mptestsrc_filter_deps="gpl"
2875 negate_filter_deps="lut_filter"
2876 nnedi_filter_deps="gpl"
2877 ocr_filter_deps="libtesseract"
2878 ocv_filter_deps="libopencv"
2879 owdenoise_filter_deps="gpl"
2880 pan_filter_deps="swresample"
2881 perspective_filter_deps="gpl"
2882 phase_filter_deps="gpl"
2883 pp7_filter_deps="gpl"
2884 pp_filter_deps="gpl postproc"
2885 pullup_filter_deps="gpl"
2886 removelogo_filter_deps="avcodec avformat swscale"
2887 repeatfields_filter_deps="gpl"
2888 resample_filter_deps="avresample"
2889 rubberband_filter_deps="librubberband"
2890 sab_filter_deps="gpl swscale"
2891 scale2ref_filter_deps="swscale"
2892 scale_filter_deps="swscale"
2893 select_filter_select="pixelutils"
2894 showcqt_filter_deps="avcodec avformat swscale"
2895 showcqt_filter_select="fft"
2896 showfreqs_filter_deps="avcodec"
2897 showfreqs_filter_select="fft"
2898 showspectrum_filter_deps="avcodec"
2899 showspectrum_filter_select="fft"
2900 showspectrumpic_filter_deps="avcodec"
2901 showspectrumpic_filter_select="fft"
2902 smartblur_filter_deps="gpl swscale"
2903 sofalizer_filter_deps="netcdf avcodec"
2904 sofalizer_filter_select="fft"
2905 spectrumsynth_filter_deps="avcodec"
2906 spectrumsynth_filter_select="fft"
2907 spp_filter_deps="gpl avcodec"
2908 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2909 stereo3d_filter_deps="gpl"
2910 subtitles_filter_deps="avformat avcodec libass"
2911 super2xsai_filter_deps="gpl"
2912 pixfmts_super2xsai_test_deps="super2xsai_filter"
2913 tinterlace_filter_deps="gpl"
2914 tinterlace_merge_test_deps="tinterlace_filter"
2915 tinterlace_pad_test_deps="tinterlace_filter"
2916 uspp_filter_deps="gpl avcodec"
2917 vidstabdetect_filter_deps="libvidstab"
2918 vidstabtransform_filter_deps="libvidstab"
2919 zmq_filter_deps="libzmq"
2920 zoompan_filter_deps="swscale"
2921 zscale_filter_deps="libzimg"
2922
2923 # examples
2924 avcodec_example_deps="avcodec avutil"
2925 avio_dir_cmd="avformat avutil"
2926 avio_reading="avformat avcodec avutil"
2927 decoding_encoding_example_deps="avcodec avformat avutil"
2928 demuxing_decoding_example_deps="avcodec avformat avutil"
2929 extract_mvs_example_deps="avcodec avformat avutil"
2930 filter_audio_example_deps="avfilter avutil"
2931 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2932 filtering_video_example_deps="avfilter avcodec avformat avutil"
2933 metadata_example_deps="avformat avutil"
2934 muxing_example_deps="avcodec avformat avutil swscale"
2935 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2936 remuxing_example_deps="avcodec avformat avutil"
2937 resampling_audio_example_deps="avutil swresample"
2938 scaling_video_example_deps="avutil swscale"
2939 transcode_aac_example_deps="avcodec avformat swresample"
2940 transcoding_example_deps="avfilter avcodec avformat avutil"
2941
2942 # libraries, in linking order
2943 avcodec_deps="avutil"
2944 avdevice_deps="avformat avcodec avutil"
2945 avfilter_deps="avutil"
2946 avformat_deps="avcodec avutil"
2947 avresample_deps="avutil"
2948 postproc_deps="avutil gpl"
2949 swresample_deps="avutil"
2950 swscale_deps="avutil"
2951
2952 # programs
2953 ffmpeg_deps="avcodec avfilter avformat swresample"
2954 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2955                null_filter
2956                setpts_filter trim_filter"
2957 ffplay_deps="avcodec avformat swscale swresample sdl"
2958 ffplay_libs='$sdl_libs'
2959 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2960 ffprobe_deps="avcodec avformat"
2961 ffserver_deps="avformat fork sarestart"
2962 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2963
2964 # documentation
2965 podpages_deps="perl"
2966 manpages_deps="perl pod2man"
2967 htmlpages_deps="perl"
2968 htmlpages_deps_any="makeinfo_html texi2html"
2969 txtpages_deps="perl makeinfo"
2970 doc_deps_any="manpages htmlpages podpages txtpages"
2971
2972 # default parameters
2973
2974 logfile="config.log"
2975
2976 # installation paths
2977 prefix_default="/usr/local"
2978 bindir_default='${prefix}/bin'
2979 datadir_default='${prefix}/share/ffmpeg'
2980 docdir_default='${prefix}/share/doc/ffmpeg'
2981 incdir_default='${prefix}/include'
2982 libdir_default='${prefix}/lib'
2983 mandir_default='${prefix}/share/man'
2984
2985 # toolchain
2986 ar_default="ar"
2987 cc_default="gcc"
2988 cxx_default="g++"
2989 host_cc_default="gcc"
2990 cp_f="cp -f"
2991 doxygen_default="doxygen"
2992 install="install"
2993 ln_s="ln -s -f"
2994 nm_default="nm -g"
2995 objformat="elf"
2996 pkg_config_default=pkg-config
2997 ranlib_default="ranlib"
2998 strip_default="strip"
2999 yasmexe_default="yasm"
3000 windres_default="windres"
3001
3002 # OS
3003 target_os_default=$(tolower $(uname -s))
3004 host_os=$target_os_default
3005
3006 # machine
3007 if test "$target_os_default" = aix; then
3008     arch_default=$(uname -p)
3009     strip_default="strip -X32_64"
3010 else
3011     arch_default=$(uname -m)
3012 fi
3013 cpu="generic"
3014 intrinsics="none"
3015
3016 # configurable options
3017 enable $PROGRAM_LIST
3018 enable $DOCUMENT_LIST
3019 enable $EXAMPLE_LIST
3020 enable $(filter_out avresample $LIBRARY_LIST)
3021 enable stripping
3022
3023 enable asm
3024 enable debug
3025 enable doc
3026 enable faan faandct faanidct
3027 enable optimizations
3028 enable runtime_cpudetect
3029 enable safe_bitstream_reader
3030 enable static
3031 enable swscale_alpha
3032 enable valgrind_backtrace
3033
3034 sws_max_filter_size_default=256
3035 set_default sws_max_filter_size
3036
3037 # Enable hwaccels by default.
3038 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3039 enable xlib
3040
3041 # build settings
3042 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3043 LIBPREF="lib"
3044 LIBSUF=".a"
3045 FULLNAME='$(NAME)$(BUILDSUF)'
3046 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3047 SLIBPREF="lib"
3048 SLIBSUF=".so"
3049 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3050 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3051 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3052 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3053 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3054 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3055
3056 asflags_filter=echo
3057 cflags_filter=echo
3058 ldflags_filter=echo
3059
3060 AS_C='-c'
3061 AS_O='-o $@'
3062 CC_C='-c'
3063 CC_E='-E -o $@'
3064 CC_O='-o $@'
3065 CXX_C='-c'
3066 CXX_O='-o $@'
3067 OBJCC_C='-c'
3068 OBJCC_E='-E -o $@'
3069 OBJCC_O='-o $@'
3070 LD_O='-o $@'
3071 LD_LIB='-l%'
3072 LD_PATH='-L'
3073 HOSTCC_C='-c'
3074 HOSTCC_E='-E -o $@'
3075 HOSTCC_O='-o $@'
3076 HOSTLD_O='-o $@'
3077
3078 host_libs='-lm'
3079 host_cflags_filter=echo
3080 host_ldflags_filter=echo
3081
3082 target_path='$(CURDIR)'
3083
3084 # since the object filename is not given with the -MM flag, the compiler
3085 # is only able to print the basename, and we must add the path ourselves
3086 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3087 DEPFLAGS='-MM'
3088
3089 # find source path
3090 if test -f configure; then
3091     source_path=.
3092 else
3093     source_path=$(cd $(dirname "$0"); pwd)
3094     case "$source_path" in
3095         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3096     esac
3097     test -e "$source_path/config.h" &&
3098         die "Out of tree builds are impossible with config.h in source dir."
3099 fi
3100
3101 for v in "$@"; do
3102     r=${v#*=}
3103     l=${v%"$r"}
3104     r=$(sh_quote "$r")
3105     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3106 done
3107
3108 find_things(){
3109     thing=$1
3110     pattern=$2
3111     file=$source_path/$3
3112     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3113 }
3114
3115 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3116 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3117 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3118 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3119 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3120 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3121 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3122 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3123 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3124 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3125 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3126
3127 ALL_COMPONENTS="
3128     $BSF_LIST
3129     $DECODER_LIST
3130     $DEMUXER_LIST
3131     $ENCODER_LIST
3132     $FILTER_LIST
3133     $HWACCEL_LIST
3134     $INDEV_LIST
3135     $MUXER_LIST
3136     $OUTDEV_LIST
3137     $PARSER_LIST
3138     $PROTOCOL_LIST
3139 "
3140
3141 for n in $COMPONENT_LIST; do
3142     v=$(toupper ${n%s})_LIST
3143     eval enable \$$v
3144     eval ${n}_if_any="\$$v"
3145 done
3146
3147 enable $ARCH_EXT_LIST
3148
3149 die_unknown(){
3150     echo "Unknown option \"$1\"."
3151     echo "See $0 --help for available options."
3152     exit 1
3153 }
3154
3155 print_in_columns() {
3156     cols=$(expr $ncols / 24)
3157     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3158 }
3159
3160 show_list() {
3161     suffix=_$1
3162     shift
3163     echo $* | sed s/$suffix//g | print_in_columns
3164     exit 0
3165 }
3166
3167 rand_list(){
3168     IFS=', '
3169     set -- $*
3170     unset IFS
3171     for thing; do
3172         comp=${thing%:*}
3173         prob=${thing#$comp}
3174         prob=${prob#:}
3175         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3176         echo "prob ${prob:-0.5}"
3177         printf '%s\n' $comp
3178     done
3179 }
3180
3181 do_random(){
3182     action=$1
3183     shift
3184     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3185     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3186 }
3187
3188 for opt do
3189     optval="${opt#*=}"
3190     case "$opt" in
3191         --extra-ldflags=*)
3192             add_ldflags $optval
3193         ;;
3194         --extra-ldexeflags=*)
3195             add_ldexeflags $optval
3196         ;;
3197         --extra-ldlibflags=*)
3198             add_ldlibflags $optval
3199         ;;
3200         --extra-libs=*)
3201             add_extralibs $optval
3202         ;;
3203         --disable-devices)
3204             disable $INDEV_LIST $OUTDEV_LIST
3205         ;;
3206         --enable-debug=*)
3207             debuglevel="$optval"
3208         ;;
3209         --disable-programs)
3210             disable $PROGRAM_LIST
3211         ;;
3212         --disable-everything)
3213             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3214         ;;
3215         --disable-all)
3216             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3217             disable $LIBRARY_LIST $PROGRAM_LIST doc
3218             enable avutil
3219         ;;
3220         --enable-random|--disable-random)
3221             action=${opt%%-random}
3222             do_random ${action#--} $COMPONENT_LIST
3223         ;;
3224         --enable-random=*|--disable-random=*)
3225             action=${opt%%-random=*}
3226             do_random ${action#--} $optval
3227         ;;
3228         --enable-*=*|--disable-*=*)
3229             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3230             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3231             eval list=\$$(toupper $thing)_LIST
3232             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3233             list=$(filter "$name" $list)
3234             [ "$list" = "" ] && warn "Option $opt did not match anything"
3235             $action $list
3236         ;;
3237         --enable-?*|--disable-?*)
3238             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3239             if is_in $option $COMPONENT_LIST; then
3240                 test $action = disable && action=unset
3241                 eval $action \$$(toupper ${option%s})_LIST
3242             elif is_in $option $CMDLINE_SELECT; then
3243                 $action $option
3244             else
3245                 die_unknown $opt
3246             fi
3247         ;;
3248         --list-*)
3249             NAME="${opt#--list-}"
3250             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3251             NAME=${NAME%s}
3252             eval show_list $NAME \$$(toupper $NAME)_LIST
3253         ;;
3254         --help|-h) show_help
3255         ;;
3256         --fatal-warnings) enable fatal_warnings
3257         ;;
3258         *)
3259             optname="${opt%%=*}"
3260             optname="${optname#--}"
3261             optname=$(echo "$optname" | sed 's/-/_/g')
3262             if is_in $optname $CMDLINE_SET; then
3263                 eval $optname='$optval'
3264             elif is_in $optname $CMDLINE_APPEND; then
3265                 append $optname "$optval"
3266             else
3267                 die_unknown $opt
3268             fi
3269         ;;
3270     esac
3271 done
3272
3273 for e in $env; do
3274     eval "export $e"
3275 done
3276
3277 disabled logging && logfile=/dev/null
3278
3279 # Disable all the library-specific components if the library itself
3280 # is disabled, see AVCODEC_LIST and following _LIST variables.
3281
3282 disable_components(){
3283     disabled ${1} && disable $(
3284         eval components="\$$(toupper ${1})_COMPONENTS"
3285         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3286     )
3287 }
3288
3289 map 'disable_components $v' $LIBRARY_LIST
3290
3291 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3292 set >> $logfile
3293
3294 test -n "$valgrind" && toolchain="valgrind-memcheck"
3295
3296 case "$toolchain" in
3297     *-asan)
3298         cc_default="${toolchain%-asan}"
3299         add_cflags  -fsanitize=address
3300         add_ldflags -fsanitize=address
3301     ;;
3302     *-tsan)
3303         cc_default="${toolchain%-tsan}"
3304         add_cflags  -fsanitize=thread -pie
3305         add_ldflags -fsanitize=thread -pie
3306         case "$toolchain" in
3307             gcc-tsan)
3308                 add_cflags  -fPIC
3309                 add_ldflags -fPIC
3310                 ;;
3311         esac
3312     ;;
3313     *-usan)
3314         cc_default="${toolchain%-usan}"
3315         add_cflags  -fsanitize=undefined
3316         add_ldflags -fsanitize=undefined
3317     ;;
3318     valgrind-*)
3319         target_exec_default="valgrind"
3320         case "$toolchain" in
3321             valgrind-massif)
3322                 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"
3323                 ;;
3324             valgrind-memcheck)
3325                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3326                 ;;
3327         esac
3328     ;;
3329     msvc)
3330         # Check whether the current MSVC version needs the C99 converter.
3331         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3332         # support enough of C99 to build ffmpeg. Default to the new
3333         # behaviour if the regexp was unable to match anything, since this
3334         # successfully parses the version number of existing supported
3335         # versions that require the converter (MSVC 2010 and 2012).
3336         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3337         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3338             cc_default="cl"
3339         else
3340             cc_default="c99wrap cl"
3341         fi
3342         ld_default="$source_path/compat/windows/mslink"
3343         nm_default="dumpbin -symbols"
3344         ar_default="lib"
3345         case "$arch" in
3346         arm*)
3347             as_default="armasm"
3348             ;;
3349         esac
3350         target_os_default="win32"
3351         # Use a relative path for TMPDIR. This makes sure all the
3352         # ffconf temp files are written with a relative path, avoiding
3353         # issues with msys/win32 path conversion for MSVC parameters
3354         # such as -Fo<file> or -out:<file>.
3355         TMPDIR=.
3356     ;;
3357     icl)
3358         cc_default="icl"
3359         ld_default="xilink"
3360         nm_default="dumpbin -symbols"
3361         ar_default="xilib"
3362         target_os_default="win32"
3363         TMPDIR=.
3364     ;;
3365     gcov)
3366         add_cflags  -fprofile-arcs -ftest-coverage
3367         add_ldflags -fprofile-arcs -ftest-coverage
3368     ;;
3369     hardened)
3370         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3371         add_cflags   -fno-strict-overflow -fstack-protector-all
3372         add_ldflags  -Wl,-z,relro -Wl,-z,now
3373     ;;
3374     ?*)
3375         die "Unknown toolchain $toolchain"
3376     ;;
3377 esac
3378
3379 test -n "$cross_prefix" && enable cross_compile
3380
3381 if enabled cross_compile; then
3382     test -n "$arch" && test -n "$target_os" ||
3383         die "Must specify target arch and OS when cross-compiling"
3384 fi
3385
3386 ar_default="${cross_prefix}${ar_default}"
3387 cc_default="${cross_prefix}${cc_default}"
3388 cxx_default="${cross_prefix}${cxx_default}"
3389 nm_default="${cross_prefix}${nm_default}"
3390 pkg_config_default="${cross_prefix}${pkg_config_default}"
3391 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3392     ranlib_default="${cross_prefix}${ranlib_default} -D"
3393 else
3394     ranlib_default="${cross_prefix}${ranlib_default}"
3395 fi
3396 strip_default="${cross_prefix}${strip_default}"
3397 windres_default="${cross_prefix}${windres_default}"
3398
3399 sysinclude_default="${sysroot}/usr/include"
3400
3401 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3402     target_exec target_os yasmexe
3403 enabled cross_compile || host_cc_default=$cc
3404 set_default host_cc
3405
3406 pkg_config_fail_message=""
3407 if ! $pkg_config --version >/dev/null 2>&1; then
3408     warn "$pkg_config not found, library detection may fail."
3409     pkg_config=false
3410 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3411     pkg_config_fail_message="
3412 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3413 fi
3414
3415 if test $doxygen != $doxygen_default && \
3416   ! $doxygen --version >/dev/null 2>&1; then
3417     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3418 fi
3419
3420 exesuf() {
3421     case $1 in
3422         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3423     esac
3424 }
3425
3426 EXESUF=$(exesuf $target_os)
3427 HOSTEXESUF=$(exesuf $host_os)
3428
3429 # set temporary file name
3430 : ${TMPDIR:=$TEMPDIR}
3431 : ${TMPDIR:=$TMP}
3432 : ${TMPDIR:=/tmp}
3433
3434 if [ -n "$tempprefix" ] ; then
3435     mktemp(){
3436         echo $tempprefix.${HOSTNAME}.${UID}
3437     }
3438 elif ! check_cmd mktemp -u XXXXXX; then
3439     # simple replacement for missing mktemp
3440     # NOT SAFE FOR GENERAL USE
3441     mktemp(){
3442         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3443     }
3444 fi
3445
3446 tmpfile(){
3447     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3448         (set -C; exec > $tmp) 2>/dev/null ||
3449         die "Unable to create temporary file in $TMPDIR."
3450     append TMPFILES $tmp
3451     eval $1=$tmp
3452 }
3453
3454 trap 'rm -f -- $TMPFILES' EXIT
3455
3456 tmpfile TMPASM .asm
3457 tmpfile TMPC   .c
3458 tmpfile TMPCPP .cpp
3459 tmpfile TMPE   $EXESUF
3460 tmpfile TMPH   .h
3461 tmpfile TMPM   .m
3462 tmpfile TMPO   .o
3463 tmpfile TMPS   .S
3464 tmpfile TMPSH  .sh
3465 tmpfile TMPV   .ver
3466
3467 unset -f mktemp
3468
3469 chmod +x $TMPE
3470
3471 # make sure we can execute files in $TMPDIR
3472 cat > $TMPSH 2>> $logfile <<EOF
3473 #! /bin/sh
3474 EOF
3475 chmod +x $TMPSH >> $logfile 2>&1
3476 if ! $TMPSH >> $logfile 2>&1; then
3477     cat <<EOF
3478 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3479 variable to another directory and make sure that it is not mounted noexec.
3480 EOF
3481     die "Sanity test failed."
3482 fi
3483
3484 armasm_flags(){
3485     for flag; do
3486         case $flag in
3487             # Filter out MSVC cl.exe options from cflags that shouldn't
3488             # be passed to gas-preprocessor
3489             -M[TD]*)                                            ;;
3490             *)                  echo $flag                      ;;
3491         esac
3492    done
3493 }
3494
3495 ccc_flags(){
3496     for flag; do
3497         case $flag in
3498             -std=c99)           echo -c99                       ;;
3499             -mcpu=*)            echo -arch ${flag#*=}           ;;
3500             -mieee)             echo -ieee                      ;;
3501             -O*|-fast)          echo $flag                      ;;
3502             -fno-math-errno)    echo -assume nomath_errno       ;;
3503             -g)                 echo -g3                        ;;
3504             -Wall)              echo -msg_enable level2         ;;
3505             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3506             -Wl,*)              echo $flag                      ;;
3507             -f*|-W*)                                            ;;
3508             *)                  echo $flag                      ;;
3509         esac
3510    done
3511 }
3512
3513 cparser_flags(){
3514     for flag; do
3515         case $flag in
3516             -Wno-switch)             echo -Wno-switch-enum ;;
3517             -Wno-format-zero-length) ;;
3518             -Wdisabled-optimization) ;;
3519             -Wno-pointer-sign)       echo -Wno-other ;;
3520             *)                       echo $flag ;;
3521         esac
3522     done
3523 }
3524
3525 msvc_common_flags(){
3526     for flag; do
3527         case $flag in
3528             # In addition to specifying certain flags under the compiler
3529             # specific filters, they must be specified here as well or else the
3530             # generic catch all at the bottom will print the original flag.
3531             -Wall)                ;;
3532             -std=c99)             ;;
3533             # Common flags
3534             -fomit-frame-pointer) ;;
3535             -g)                   echo -Z7 ;;
3536             -fno-math-errno)      ;;
3537             -fno-common)          ;;
3538             -fno-signed-zeros)    ;;
3539             -fPIC)                ;;
3540             -mthumb)              ;;
3541             -march=*)             ;;
3542             -lz)                  echo zlib.lib ;;
3543             -lavifil32)           echo vfw32.lib ;;
3544             -lavicap32)           echo vfw32.lib user32.lib ;;
3545             -lx264)               echo libx264.lib ;;
3546             -l*)                  echo ${flag#-l}.lib ;;
3547             -LARGEADDRESSAWARE)   echo $flag ;;
3548             -L*)                  echo -libpath:${flag#-L} ;;
3549             *)                    echo $flag ;;
3550         esac
3551     done
3552 }
3553
3554 msvc_flags(){
3555     msvc_common_flags "$@"
3556     for flag; do
3557         case $flag in
3558             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3559                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3560                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3561                                        -wd4307 \
3562                                        -wd4273 -wd4554 -wd4701 ;;
3563         esac
3564     done
3565 }
3566
3567 icl_flags(){
3568     msvc_common_flags "$@"
3569     for flag; do
3570         case $flag in
3571             # Despite what Intel's documentation says -Wall, which is supported
3572             # on Windows, does enable remarks so disable them here.
3573             -Wall)                echo $flag -Qdiag-disable:remark ;;
3574             -std=c99)             echo -Qstd=c99 ;;
3575             -flto)                echo -ipo ;;
3576         esac
3577     done
3578 }
3579
3580 icc_flags(){
3581     for flag; do
3582         case $flag in
3583             -flto)                echo -ipo ;;
3584             *)                    echo $flag ;;
3585         esac
3586     done
3587 }
3588
3589 pgi_flags(){
3590     for flag; do
3591         case $flag in
3592             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3593             -fomit-frame-pointer) echo -Mnoframe ;;
3594             -g)                   echo -gopt ;;
3595             *)                    echo $flag ;;
3596         esac
3597     done
3598 }
3599
3600 suncc_flags(){
3601     for flag; do
3602         case $flag in
3603             -march=*|-mcpu=*)
3604                 case "${flag#*=}" in
3605                     native)                   echo -xtarget=native       ;;
3606                     v9|niagara)               echo -xarch=sparc          ;;
3607                     ultrasparc)               echo -xarch=sparcvis       ;;
3608                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3609                     i586|pentium)             echo -xchip=pentium        ;;
3610                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3611                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3612                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3613                     pentium4*)          echo -xtarget=pentium4           ;;
3614                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3615                     *-sse3)             echo -xarch=sse3                 ;;
3616                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3617                     bonnell)                   echo -xarch=ssse3         ;;
3618                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3619                     westmere)                  echo -xtarget=westmere    ;;
3620                     silvermont)                echo -xarch=sse4_2        ;;
3621                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3622                     core-avx*|ivybridge|haswell|broadwell)
3623                                                echo -xarch=avx           ;;
3624                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3625                     btver1)                    echo -xarch=amdsse4a      ;;
3626                     btver2|bdver*)             echo -xarch=avx           ;;
3627                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3628                     k8|opteron|athlon64|athlon-fx)
3629                                                echo -xarch=sse2a         ;;
3630                     athlon*)                   echo -xarch=pentium_proa  ;;
3631                 esac
3632                 ;;
3633             -std=c99)             echo -xc99              ;;
3634             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3635             -fPIC)                echo -KPIC -xcode=pic32 ;;
3636             -W*,*)                echo $flag              ;;
3637             -f*-*|-W*|-mimpure-text)                      ;;
3638             -shared)              echo -G                 ;;
3639             *)                    echo $flag              ;;
3640         esac
3641     done
3642 }
3643
3644 tms470_flags(){
3645     for flag; do
3646         case $flag in
3647             -march=*|-mcpu=*)
3648                 case "${flag#*=}" in
3649                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3650                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3651                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3652                     armv6*|arm11*)          echo -mv=6   ;;
3653                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3654                                             echo -mv=5e  ;;
3655                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3656                 esac
3657                 ;;
3658             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3659             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3660             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3661             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3662             -msoft-float)   echo --float_support=vfplib       ;;
3663             -O[0-3]|-mf=*)  echo $flag                        ;;
3664             -g)             echo -g -mn                       ;;
3665             -pds=*)         echo $flag                        ;;
3666             -D*|-I*)        echo $flag                        ;;
3667             --gcc|--abi=*)  echo $flag                        ;;
3668             -me)            echo $flag                        ;;
3669         esac
3670     done
3671 }
3672
3673 probe_cc(){
3674     pfx=$1
3675     _cc=$2
3676     first=$3
3677
3678     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3679     unset _ld_o _ldflags _ld_lib _ld_path
3680     unset _depflags _DEPCMD _DEPFLAGS
3681     _flags_filter=echo
3682
3683     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3684         true # no-op to avoid reading stdin in following checks
3685     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3686         _type=llvm_gcc
3687         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3688         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3689         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3690         _cflags_speed='-O3'
3691         _cflags_size='-Os'
3692     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3693         _type=gcc
3694         gcc_version=$($_cc --version | head -n1)
3695         gcc_basever=$($_cc -dumpversion)
3696         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3697         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3698         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3699         case $gcc_basever in
3700             2) ;;
3701             2.*) ;;
3702             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3703         esac
3704         if [ "$first" = true ]; then
3705             case $gcc_basever in
3706                 4.2*)
3707                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3708             esac
3709         fi
3710         _cflags_speed='-O3'
3711         _cflags_size='-Os'
3712     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3713         _type=icc
3714         _ident=$($_cc --version | head -n1)
3715         _depflags='-MMD'
3716         _cflags_speed='-O3'
3717         _cflags_size='-Os'
3718         _cflags_noopt='-O1'
3719         _flags_filter=icc_flags
3720     elif $_cc -v 2>&1 | grep -q xlc; then
3721         _type=xlc
3722         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3723         _cflags_speed='-O5'
3724         _cflags_size='-O5 -qcompact'
3725     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3726         _type=ccc
3727         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3728         _DEPFLAGS='-M'
3729         _cflags_speed='-fast'
3730         _cflags_size='-O1'
3731         _flags_filter=ccc_flags
3732     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3733         test -d "$sysroot" || die "No valid sysroot specified."
3734         _type=armcc
3735         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3736         armcc_conf="$PWD/armcc.conf"
3737         $_cc --arm_linux_configure                 \
3738              --arm_linux_config_file="$armcc_conf" \
3739              --configure_sysroot="$sysroot"        \
3740              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3741              die "Error creating armcc configuration file."
3742         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3743         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3744         as_default="${cross_prefix}gcc"
3745         _depflags='-MMD'
3746         _cflags_speed='-O3'
3747         _cflags_size='-Os'
3748     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3749         _type=tms470
3750         _ident=$($_cc -version | head -n1 | tr -s ' ')
3751         _flags='--gcc --abi=eabi -me'
3752         _cc_e='-ppl -fe=$@'
3753         _cc_o='-fe=$@'
3754         _depflags='-ppa -ppd=$(@:.o=.d)'
3755         _cflags_speed='-O3 -mf=5'
3756         _cflags_size='-O3 -mf=2'
3757         _flags_filter=tms470_flags
3758     elif $_cc -v 2>&1 | grep -q clang; then
3759         _type=clang
3760         _ident=$($_cc --version 2>/dev/null | head -n1)
3761         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3762         _cflags_speed='-O3'
3763         _cflags_size='-Os'
3764     elif $_cc -V 2>&1 | grep -q Sun; then
3765         _type=suncc
3766         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3767         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3768         _DEPFLAGS='-xM1 -xc99'
3769         _ldflags='-std=c99'
3770         _cflags_speed='-O5'
3771         _cflags_size='-O5 -xspace'
3772         _flags_filter=suncc_flags
3773     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3774         _type=pathscale
3775         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3776         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3777         _cflags_speed='-O2'
3778         _cflags_size='-Os'
3779         _flags_filter='filter_out -Wdisabled-optimization'
3780     elif $_cc -v 2>&1 | grep -q Open64; then
3781         _type=open64
3782         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3783         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3784         _cflags_speed='-O2'
3785         _cflags_size='-Os'
3786         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3787     elif $_cc -V 2>&1 | grep -q Portland; then
3788         _type=pgi
3789         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3790         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3791         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3792         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3793         _cflags_noopt="-O"
3794         _flags_filter=pgi_flags
3795     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3796         _type=armasm
3797         _ident=$($_cc | head -n1)
3798         # 4509: "This form of conditional instruction is deprecated"
3799         _flags="-nologo -ignore 4509"
3800         _flags_filter=armasm_flags
3801     elif $_cc 2>&1 | grep -q Intel; then
3802         _type=icl
3803         _ident=$($_cc 2>&1 | head -n1)
3804         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3805         # Not only is O3 broken on 13.x+ but it is slower on all previous
3806         # versions (tested) as well.
3807         _cflags_speed="-O2"
3808         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3809         if $_cc 2>&1 | grep -q Linker; then
3810             _ld_o='-out:$@'
3811         else
3812             _ld_o='-Fe$@'
3813         fi
3814         _cc_o='-Fo$@'
3815         _cc_e='-P'
3816         _flags_filter=icl_flags
3817         _ld_lib='lib%.a'
3818         _ld_path='-libpath:'
3819         # -Qdiag-error to make icl error when seeing certain unknown arguments
3820         _flags='-nologo -Qdiag-error:4044,10157'
3821         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3822         # with MSVC which enables it by default.
3823         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3824         disable stripping
3825     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3826         _type=msvc
3827         _ident=$($_cc 2>&1 | head -n1)
3828         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3829         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3830         _cflags_speed="-O2"
3831         _cflags_size="-O1"
3832         if $_cc -nologo- 2>&1 | grep -q Linker; then
3833             _ld_o='-out:$@'
3834         else
3835             _ld_o='-Fe$@'
3836         fi
3837         _cc_o='-Fo$@'
3838         _cc_e='-P -Fi$@'
3839         _flags_filter=msvc_flags
3840         _ld_lib='lib%.a'
3841         _ld_path='-libpath:'
3842         _flags='-nologo'
3843         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3844         disable stripping
3845     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3846         _type=cparser
3847         _ident=$($_cc --version | head -n1)
3848         _depflags='-MMD'
3849         _cflags_speed='-O4'
3850         _cflags_size='-O2'
3851         _flags_filter=cparser_flags
3852     fi
3853
3854     eval ${pfx}_type=\$_type
3855     eval ${pfx}_ident=\$_ident
3856 }
3857
3858 set_ccvars(){
3859     eval ${1}_C=\${_cc_c-\${${1}_C}}
3860     eval ${1}_E=\${_cc_e-\${${1}_E}}
3861     eval ${1}_O=\${_cc_o-\${${1}_O}}
3862
3863     if [ -n "$_depflags" ]; then
3864         eval ${1}_DEPFLAGS=\$_depflags
3865     else
3866         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3867         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3868         eval DEP${1}FLAGS=\$_flags
3869     fi
3870 }
3871
3872 probe_cc cc "$cc" "true"
3873 cflags_filter=$_flags_filter
3874 cflags_speed=$_cflags_speed
3875 cflags_size=$_cflags_size
3876 cflags_noopt=$_cflags_noopt
3877 add_cflags $_flags $_cflags
3878 cc_ldflags=$_ldflags
3879 set_ccvars CC
3880
3881 probe_cc hostcc "$host_cc"
3882 host_cflags_filter=$_flags_filter
3883 add_host_cflags  $_flags $_cflags
3884 set_ccvars HOSTCC
3885
3886 test -n "$cc_type" && enable $cc_type ||
3887     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3888
3889 : ${as_default:=$cc}
3890 : ${objcc_default:=$cc}
3891 : ${dep_cc_default:=$cc}
3892 : ${ld_default:=$cc}
3893 : ${host_ld_default:=$host_cc}
3894 set_default ar as objcc dep_cc ld host_ld windres
3895
3896 probe_cc as "$as"
3897 asflags_filter=$_flags_filter
3898 add_asflags $_flags $_cflags
3899 set_ccvars AS
3900
3901 probe_cc objcc "$objcc"
3902 objcflags_filter=$_flags_filter
3903 add_objcflags $_flags $_cflags
3904 set_ccvars OBJC
3905
3906 probe_cc ld "$ld"
3907 ldflags_filter=$_flags_filter
3908 add_ldflags $_flags $_ldflags
3909 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3910 LD_O=${_ld_o-$LD_O}
3911 LD_LIB=${_ld_lib-$LD_LIB}
3912 LD_PATH=${_ld_path-$LD_PATH}
3913
3914 probe_cc hostld "$host_ld"
3915 host_ldflags_filter=$_flags_filter
3916 add_host_ldflags $_flags $_ldflags
3917 HOSTLD_O=${_ld_o-$HOSTLD_O}
3918
3919 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3920     probe_cc depcc "$dep_cc"
3921     CCDEP=${_DEPCMD:-$DEPCMD}
3922     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3923     DEPCCFLAGS=$_flags
3924 fi
3925
3926 if $ar 2>&1 | grep -q Microsoft; then
3927     arflags="-nologo"
3928     ar_o='-out:$@'
3929 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3930     arflags="rq"
3931     ar_o='$@'
3932 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3933     arflags='-Xany -r -c'
3934     ar_o='$@'
3935 elif $ar 2>&1 | grep -q "\[D\] "; then
3936     arflags="rcD"
3937     ar_o='$@'
3938 else
3939     arflags="rc"
3940     ar_o='$@'
3941 fi
3942
3943 add_cflags $extra_cflags
3944 add_cxxflags $extra_cxxflags
3945 add_objcflags $extra_objcflags
3946 add_asflags $extra_cflags
3947
3948 if test -n "$sysroot"; then
3949     case "$cc_type" in
3950         gcc|llvm_gcc|clang)
3951             add_cppflags --sysroot="$sysroot"
3952             add_ldflags --sysroot="$sysroot"
3953 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3954             add_cppflags -isysroot "$sysroot"
3955             add_ldflags -isysroot "$sysroot"
3956         ;;
3957         tms470)
3958             add_cppflags -I"$sysinclude"
3959             add_ldflags  --sysroot="$sysroot"
3960         ;;
3961     esac
3962 fi
3963
3964 if test "$cpu" = host; then
3965     enabled cross_compile &&
3966         die "--cpu=host makes no sense when cross-compiling."
3967
3968     case "$cc_type" in
3969         gcc|llvm_gcc)
3970             check_native(){
3971                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3972                 sed -n "/cc1.*$1=/{
3973                             s/.*$1=\\([^ ]*\\).*/\\1/
3974                             p
3975                             q
3976                         }" $TMPE
3977             }
3978             cpu=$(check_native -march || check_native -mcpu)
3979         ;;
3980         clang)
3981             check_native(){
3982                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3983                 sed -n "/cc1.*-target-cpu /{
3984                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
3985                             p
3986                             q
3987                         }" $TMPE
3988             }
3989             cpu=$(check_native -march)
3990         ;;
3991     esac
3992
3993     test "${cpu:-host}" = host &&
3994         die "--cpu=host not supported with compiler $cc"
3995 fi
3996
3997 # Deal with common $arch aliases
3998 case "$arch" in
3999     aarch64|arm64)
4000         arch="aarch64"
4001     ;;
4002     arm*|iPad*|iPhone*)
4003         arch="arm"
4004     ;;
4005     mips*|IP*)
4006         case "$arch" in
4007         *el)
4008             add_cppflags -EL
4009             add_ldflags -EL
4010         ;;
4011         *eb)
4012             add_cppflags -EB
4013             add_ldflags -EB
4014         ;;
4015         esac
4016         arch="mips"
4017     ;;
4018     parisc*|hppa*)
4019         arch="parisc"
4020     ;;
4021     "Power Macintosh"|ppc*|powerpc*)
4022         arch="ppc"
4023     ;;
4024     s390|s390x)
4025         arch="s390"
4026     ;;
4027     sh4|sh)
4028         arch="sh4"
4029     ;;
4030     sun4u|sparc*)
4031         arch="sparc"
4032     ;;
4033     tilegx|tile-gx)
4034         arch="tilegx"
4035     ;;
4036     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4037         arch="x86"
4038     ;;
4039 esac
4040
4041 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4042 enable $arch
4043
4044 # Add processor-specific flags
4045 if enabled aarch64; then
4046
4047     case $cpu in
4048         armv*)
4049             cpuflags="-march=$cpu"
4050         ;;
4051         *)
4052             cpuflags="-mcpu=$cpu"
4053         ;;
4054     esac
4055
4056 elif enabled alpha; then
4057
4058     cpuflags="-mcpu=$cpu"
4059
4060 elif enabled arm; then
4061
4062     check_arm_arch() {
4063         check_cpp_condition stddef.h \
4064             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4065             $cpuflags
4066     }
4067
4068     probe_arm_arch() {
4069         if   check_arm_arch 4;        then echo armv4;
4070         elif check_arm_arch 4T;       then echo armv4t;
4071         elif check_arm_arch 5;        then echo armv5;
4072         elif check_arm_arch 5E;       then echo armv5e;
4073         elif check_arm_arch 5T;       then echo armv5t;
4074         elif check_arm_arch 5TE;      then echo armv5te;
4075         elif check_arm_arch 5TEJ;     then echo armv5te;
4076         elif check_arm_arch 6;        then echo armv6;
4077         elif check_arm_arch 6J;       then echo armv6j;
4078         elif check_arm_arch 6K;       then echo armv6k;
4079         elif check_arm_arch 6Z;       then echo armv6z;
4080         elif check_arm_arch 6ZK;      then echo armv6zk;
4081         elif check_arm_arch 6T2;      then echo armv6t2;
4082         elif check_arm_arch 7;        then echo armv7;
4083         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4084         elif check_arm_arch 7S;       then echo armv7-a;
4085         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4086         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4087         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4088         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4089         fi
4090     }
4091
4092     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4093
4094     case $cpu in
4095         armv*)
4096             cpuflags="-march=$cpu"
4097             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4098         ;;
4099         *)
4100             cpuflags="-mcpu=$cpu"
4101             case $cpu in
4102                 cortex-a*)                               subarch=armv7a  ;;
4103                 cortex-r*)                               subarch=armv7r  ;;
4104                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4105                 arm11*)                                  subarch=armv6   ;;
4106                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4107                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4108                 *)                             subarch=$(probe_arm_arch) ;;
4109             esac
4110         ;;
4111     esac
4112
4113     case "$subarch" in
4114         armv5t*)    enable fast_clz                ;;
4115         armv[6-8]*)
4116             enable fast_clz
4117             disabled fast_unaligned || enable fast_unaligned
4118             ;;
4119     esac
4120
4121 elif enabled avr32; then
4122
4123     case $cpu in
4124         ap7[02]0[0-2])
4125             subarch="avr32_ap"
4126             cpuflags="-mpart=$cpu"
4127         ;;
4128         ap)
4129             subarch="avr32_ap"
4130             cpuflags="-march=$cpu"
4131         ;;
4132         uc3[ab]*)
4133             subarch="avr32_uc"
4134             cpuflags="-mcpu=$cpu"
4135         ;;
4136         uc)
4137             subarch="avr32_uc"
4138             cpuflags="-march=$cpu"
4139         ;;
4140     esac
4141
4142 elif enabled bfin; then
4143
4144     cpuflags="-mcpu=$cpu"
4145
4146 elif enabled mips; then
4147
4148     cpuflags="-march=$cpu"
4149
4150     case $cpu in
4151         24kc)
4152             disable mips32r6
4153             disable mips64r2
4154             disable mips64r6
4155             disable mipsfpu
4156             disable mipsdsp
4157             disable mipsdspr2
4158             disable msa
4159         ;;
4160         24kf*)
4161             disable mips32r6
4162             disable mips64r2
4163             disable mips64r6
4164             disable mipsdsp
4165             disable mipsdspr2
4166             disable msa
4167         ;;
4168         24kec|34kc|1004kc)
4169             disable mips32r6
4170             disable mips64r2
4171             disable mips64r6
4172             disable mipsfpu
4173             disable mipsdspr2
4174             disable msa
4175         ;;
4176         24kef*|34kf*|1004kf*)
4177             disable mips32r6
4178             disable mips64r2
4179             disable mips64r6
4180             disable mipsdspr2
4181             disable msa
4182         ;;
4183         74kc)
4184             disable mips32r6
4185             disable mips64r2
4186             disable mips64r6
4187             disable mipsfpu
4188             disable msa
4189         ;;
4190         74kf)
4191             disable mips32r6
4192             disable mips64r2
4193             disable mips64r6
4194             disable msa
4195         ;;
4196         p5600)
4197             disable mips32r6
4198             disable mips64r2
4199             disable mips64r6
4200             disable mipsdsp
4201             disable mipsdspr2
4202             check_cflags "-mtune=p5600" &&
4203             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4204             add_asflags "-mfp64"
4205         ;;
4206         i6400)
4207             disable mips32r2
4208             disable mips32r6
4209             disable mips64r2
4210             disable mipsdsp
4211             disable mipsdspr2
4212             check_cflags "-mtune=i6400 -mabi=64" &&
4213             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4214             check_ldflags "-mabi=64" &&
4215             add_asflags "-mfp64"
4216         ;;
4217         loongson*)
4218             disable mips32r2
4219             disable mips32r6
4220             disable mips64r2
4221             disable mips64r6
4222             disable mipsfpu
4223             disable mipsdsp
4224             disable mipsdspr2
4225             disable msa
4226             enable local_aligned_8 local_aligned_16 local_aligned_32
4227             enable simd_align_16
4228             enable fast_64bit
4229             enable fast_clz
4230             enable fast_cmov
4231             enable fast_unaligned
4232             disable aligned_stack
4233             case $cpu in
4234                 loongson3*)
4235                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4236                 ;;
4237                 loongson2e)
4238                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4239                 ;;
4240                 loongson2f)
4241                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4242                 ;;
4243             esac
4244         ;;
4245         generic)
4246             disable mips64r6
4247             disable msa
4248         ;;
4249         *)
4250             # Unknown CPU. Disable everything.
4251             warn "unknown CPU. Disabling all MIPS optimizations."
4252             disable mipsfpu
4253             disable mips32r2
4254             disable mips32r6
4255             disable mips64r2
4256             disable mips64r6
4257             disable mipsdsp
4258             disable mipsdspr2
4259             disable msa
4260         ;;
4261     esac
4262
4263 elif enabled ppc; then
4264
4265     disable ldbrx
4266
4267     case $(tolower $cpu) in
4268         601|ppc601|powerpc601)
4269             cpuflags="-mcpu=601"
4270             disable altivec
4271         ;;
4272         603*|ppc603*|powerpc603*)
4273             cpuflags="-mcpu=603"
4274             disable altivec
4275         ;;
4276         604*|ppc604*|powerpc604*)
4277             cpuflags="-mcpu=604"
4278             disable altivec
4279         ;;
4280         g3|75*|ppc75*|powerpc75*)
4281             cpuflags="-mcpu=750"
4282             disable altivec
4283         ;;
4284         g4|745*|ppc745*|powerpc745*)
4285             cpuflags="-mcpu=7450"
4286             disable vsx
4287         ;;
4288         74*|ppc74*|powerpc74*)
4289             cpuflags="-mcpu=7400"
4290             disable vsx
4291         ;;
4292         g5|970|ppc970|powerpc970)
4293             cpuflags="-mcpu=970"
4294             disable vsx
4295         ;;
4296         power[3-6]*)
4297             cpuflags="-mcpu=$cpu"
4298             disable vsx
4299         ;;
4300         power[7-8]*)
4301             cpuflags="-mcpu=$cpu"
4302         ;;
4303         cell)
4304             cpuflags="-mcpu=cell"
4305             enable ldbrx
4306             disable vsx
4307         ;;
4308         e500mc)
4309             cpuflags="-mcpu=e500mc"
4310             disable altivec
4311         ;;
4312         e500v2)
4313             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4314             disable altivec
4315             disable dcbzl
4316         ;;
4317         e500)
4318             cpuflags="-mcpu=8540 -mhard-float"
4319             disable altivec
4320             disable dcbzl
4321         ;;
4322     esac
4323
4324 elif enabled sparc; then
4325
4326     case $cpu in
4327         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4328             cpuflags="-mcpu=$cpu"
4329         ;;
4330         ultrasparc*|niagara[234])
4331             cpuflags="-mcpu=$cpu"
4332         ;;
4333     esac
4334
4335 elif enabled x86; then
4336
4337     case $cpu in
4338         i[345]86|pentium)
4339             cpuflags="-march=$cpu"
4340             disable i686
4341             disable mmx
4342         ;;
4343         # targets that do NOT support nopl and conditional mov (cmov)
4344         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4345             cpuflags="-march=$cpu"
4346             disable i686
4347         ;;
4348         # targets that do support nopl and conditional mov (cmov)
4349         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4350         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4351             cpuflags="-march=$cpu"
4352             enable i686
4353             enable fast_cmov
4354         ;;
4355         # targets that do support conditional mov but on which it's slow
4356         pentium4|pentium4m|prescott|nocona)
4357             cpuflags="-march=$cpu"
4358             enable i686
4359             disable fast_cmov
4360         ;;
4361     esac
4362
4363 fi
4364
4365 if [ "$cpu" != generic ]; then
4366     add_cflags  $cpuflags
4367     add_asflags $cpuflags
4368     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4369 fi
4370
4371 # compiler sanity check
4372 check_exec <<EOF
4373 int main(void){ return 0; }
4374 EOF
4375 if test "$?" != 0; then
4376     echo "$cc is unable to create an executable file."
4377     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4378         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4379         echo "Only do this if you know what cross compiling means."
4380     fi
4381     die "C compiler test failed."
4382 fi
4383
4384 add_cppflags -D_ISOC99_SOURCE
4385 add_cxxflags -D__STDC_CONSTANT_MACROS
4386 check_cflags -std=c99
4387 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4388 #include <stdlib.h>
4389 EOF
4390 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4391 #include <stdlib.h>
4392 EOF
4393
4394 add_host_cppflags -D_ISOC99_SOURCE
4395 check_host_cflags -std=c99
4396 check_host_cflags -Wall
4397 check_host_cflags -O3
4398
4399 check_64bit(){
4400     arch32=$1
4401     arch64=$2
4402     expr=$3
4403     check_code cc "" "int test[2*($expr) - 1]" &&
4404         subarch=$arch64 || subarch=$arch32
4405 }
4406
4407 case "$arch" in
4408     aarch64|alpha|ia64)
4409         spic=$shared
4410     ;;
4411     mips)
4412         check_64bit mips mips64 '_MIPS_SIM > 1'
4413         spic=$shared
4414     ;;
4415     parisc)
4416         check_64bit parisc parisc64 'sizeof(void *) > 4'
4417         spic=$shared
4418     ;;
4419     ppc)
4420         check_64bit ppc ppc64 'sizeof(void *) > 4'
4421         spic=$shared
4422     ;;
4423     s390)
4424         check_64bit s390 s390x 'sizeof(void *) > 4'
4425         spic=$shared
4426     ;;
4427     sparc)
4428         check_64bit sparc sparc64 'sizeof(void *) > 4'
4429         spic=$shared
4430     ;;
4431     x86)
4432         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4433         # Treat x32 as x64 for now. Note it also needs spic=$shared
4434         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4435             subarch=x86_64
4436         if test "$subarch" = "x86_64"; then
4437             spic=$shared
4438         fi
4439     ;;
4440     ppc)
4441         check_cc <<EOF && subarch="ppc64"
4442         int test[(int)sizeof(char*) - 7];
4443 EOF
4444     ;;
4445 esac
4446
4447 enable $subarch
4448 enabled spic && enable_weak pic
4449
4450 # OS specific
4451 case $target_os in
4452     aix)
4453         SHFLAGS=-shared
4454         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4455         enabled shared && add_ldflags -Wl,-brtl
4456         ;;
4457     android)
4458         disable symver
4459         enable section_data_rel_ro
4460         SLIB_INSTALL_NAME='$(SLIBNAME)'
4461         SLIB_INSTALL_LINKS=
4462         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4463         ;;
4464     haiku)
4465         prefix_default="/boot/common"
4466         network_extralibs="-lnetwork"
4467         host_libs=
4468         ;;
4469     sunos)
4470         SHFLAGS='-shared -Wl,-h,$$(@F)'
4471         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4472         network_extralibs="-lsocket -lnsl"
4473         add_cppflags -D__EXTENSIONS__
4474         # When using suncc to build, the Solaris linker will mark
4475         # an executable with each instruction set encountered by
4476         # the Solaris assembler.  As our libraries contain their own
4477         # guards for processor-specific code, instead suppress
4478         # generation of the HWCAPS ELF section on Solaris x86 only.
4479         enabled_all suncc x86 &&
4480             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4481             add_ldflags -Wl,-M,mapfile
4482         nm_default='nm -P -g'
4483         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4484         ;;
4485     netbsd)
4486         disable symver
4487         oss_indev_extralibs="-lossaudio"
4488         oss_outdev_extralibs="-lossaudio"
4489         enabled gcc || check_ldflags -Wl,-zmuldefs
4490         ;;
4491     openbsd|bitrig)
4492         disable symver
4493         SHFLAGS='-shared'
4494         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4495         SLIB_INSTALL_LINKS=
4496         oss_indev_extralibs="-lossaudio"
4497         oss_outdev_extralibs="-lossaudio"
4498         ;;
4499     dragonfly)
4500         disable symver
4501         ;;
4502     freebsd)
4503         ;;
4504     bsd/os)
4505         add_extralibs -lpoll -lgnugetopt
4506         strip="strip -d"
4507         ;;
4508     darwin)
4509         enabled ppc && add_asflags -force_cpusubtype_ALL
4510         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4511         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4512         strip="${strip} -x"
4513         add_ldflags -Wl,-dynamic,-search_paths_first
4514         SLIBSUF=".dylib"
4515         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4516         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4517         objformat="macho"
4518         enabled x86_64 && objformat="macho64"
4519         enabled_any pic shared x86_64 ||
4520             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4521         ;;
4522     msys*)
4523         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4524         ;;
4525     mingw32*|mingw64*)
4526         if test $target_os = "mingw32ce"; then
4527             disable network
4528         else
4529             target_os=mingw32
4530         fi
4531         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4532         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4533         LIBTARGET=i386
4534         if enabled x86_64; then
4535             LIBTARGET="i386:x86-64"
4536         elif enabled arm; then
4537             LIBTARGET=arm-wince
4538         fi
4539         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4540         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4541         shlibdir_default="$bindir_default"
4542         SLIBPREF=""
4543         SLIBSUF=".dll"
4544         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4545         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4546         dlltool="${cross_prefix}dlltool"
4547         if check_cmd lib.exe -list; then
4548             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4549             if enabled x86_64; then
4550                 LIBTARGET=x64
4551             fi
4552         elif check_cmd $dlltool --version; then
4553             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4554         fi
4555         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4556         SLIB_INSTALL_LINKS=
4557         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4558         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4559         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4560         objformat="win32"
4561         ranlib=:
4562         enable dos_paths
4563         check_ldflags -Wl,--nxcompat,--dynamicbase
4564         # Lets work around some stupidity in binutils.
4565         # ld will strip relocations from executables even though we need them
4566         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4567         # however ld then forgets what the entry point should be (oops) so we
4568         # have to manually (re)set it.
4569         if enabled x86_32; then
4570             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4571         elif enabled x86_64; then
4572             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4573             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4574             # Set image base >4GB for extra entropy with HEASLR
4575             add_ldexeflags -Wl,--image-base,0x140000000
4576             append SHFLAGS -Wl,--image-base,0x180000000
4577         fi
4578         ;;
4579     win32|win64)
4580         disable symver
4581         if enabled shared; then
4582             # Link to the import library instead of the normal static library
4583             # for shared libs.
4584             LD_LIB='%.lib'
4585             # Cannot build both shared and static libs with MSVC or icl.
4586             disable static
4587         fi
4588         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4589         shlibdir_default="$bindir_default"
4590         SLIBPREF=""
4591         SLIBSUF=".dll"
4592         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4593         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4594         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4595         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4596         SLIB_INSTALL_LINKS=
4597         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4598         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4599         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4600         objformat="win32"
4601         ranlib=:
4602         enable dos_paths
4603         ;;
4604     cygwin*)
4605         target_os=cygwin
4606         shlibdir_default="$bindir_default"
4607         SLIBPREF="cyg"
4608         SLIBSUF=".dll"
4609         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4610         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4611         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4612         SLIB_INSTALL_LINKS=
4613         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4614         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4615         objformat="win32"
4616         enable dos_paths
4617         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4618         ;;
4619     *-dos|freedos|opendos)
4620         network_extralibs="-lsocket"
4621         objformat="coff"
4622         enable dos_paths
4623         add_cppflags -U__STRICT_ANSI__
4624         ;;
4625     linux)
4626         enable dv1394
4627         enable section_data_rel_ro
4628         ;;
4629     irix*)
4630         target_os=irix
4631         ranlib="echo ignoring ranlib"
4632         ;;
4633     os/2*)
4634         strip="lxlite -CS"
4635         ln_s="cp -f"
4636         objformat="aout"
4637         add_cppflags -D_GNU_SOURCE
4638         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4639         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4640         LIBSUF="_s.a"
4641         SLIBPREF=""
4642         SLIBSUF=".dll"
4643         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4644         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4645         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4646             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4647             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4648             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4649             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4650         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4651             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4652         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4653         enable dos_paths
4654         enable_weak os2threads
4655         ;;
4656     gnu/kfreebsd)
4657         add_cppflags -D_BSD_SOURCE
4658         ;;
4659     gnu)
4660         ;;
4661     qnx)
4662         add_cppflags -D_QNX_SOURCE
4663         network_extralibs="-lsocket"
4664         ;;
4665     symbian)
4666         SLIBSUF=".dll"
4667         enable dos_paths
4668         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4669         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4670         add_ldflags -Wl,--target1-abs,--no-undefined \
4671                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4672                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4673         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4674                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4675                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4676         ;;
4677     osf1)
4678         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4679         ;;
4680     minix)
4681         ;;
4682     plan9)
4683         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4684                      -D_REENTRANT_SOURCE        \
4685                      -D_RESEARCH_SOURCE         \
4686                      -DFD_SETSIZE=96            \
4687                      -DHAVE_SOCK_OPTS
4688         add_compat strtod.o strtod=avpriv_strtod
4689         network_extralibs='-lbsd'
4690         exeobjs=compat/plan9/main.o
4691         disable ffserver
4692         cp_f='cp'
4693         ;;
4694     none)
4695         ;;
4696     *)
4697         die "Unknown OS '$target_os'."
4698         ;;
4699 esac
4700
4701 # test if creating links works
4702 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4703 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4704 mkdir "$link_dest"
4705 $ln_s "$link_dest" "$link_name"
4706 touch "$link_dest/test_file"
4707 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4708     # create link to source path
4709     [ -e src ] && rm src
4710     $ln_s "$source_path" src
4711     source_link=src
4712 else
4713     # creating directory links doesn't work
4714     # fall back to using the full source path
4715     source_link="$source_path"
4716 fi
4717 # cleanup
4718 rm -r "$link_dest"
4719 rm -r "$link_name"
4720
4721 # determine libc flavour
4722
4723 probe_libc(){
4724     pfx=$1
4725     pfx_no_=${pfx%_}
4726     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4727     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4728         eval ${pfx}libc_type=uclibc
4729         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4730     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4731         eval ${pfx}libc_type=glibc
4732         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4733     # MinGW headers can be installed on Cygwin, so check for newlib first.
4734     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4735         eval ${pfx}libc_type=newlib
4736         add_${pfx}cppflags -U__STRICT_ANSI__
4737     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4738     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4739         eval ${pfx}libc_type=mingw64
4740         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4741             add_compat msvcrt/snprintf.o
4742             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4743         fi
4744         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4745         eval test \$${pfx_no_}cc_type = "gcc" &&
4746             add_${pfx}cppflags -D__printf__=__gnu_printf__
4747     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4748          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4749         eval ${pfx}libc_type=mingw32
4750         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4751             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4752             die "ERROR: MinGW32 runtime version must be >= 3.15."
4753         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4754         eval test \$${pfx_no_}cc_type = "gcc" &&
4755             add_${pfx}cppflags -D__printf__=__gnu_printf__
4756     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4757         eval ${pfx}libc_type=msvcrt
4758         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4759             if [ "$pfx" = host_ ]; then
4760                 add_host_cppflags -Dsnprintf=_snprintf
4761             else
4762                 add_compat strtod.o strtod=avpriv_strtod
4763                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4764                                              _snprintf=avpriv_snprintf  \
4765                                              vsnprintf=avpriv_vsnprintf
4766             fi
4767         fi
4768         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4769         # 0x601 by default unless something else is set by the user.
4770         # This can easily lead to us detecting functions only present
4771         # in such new versions and producing binaries requiring windows 7.0.
4772         # Therefore explicitly set the default to XP unless the user has
4773         # set something else on the command line.
4774         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4775         # family. For these cases, configure is free to use any functions
4776         # found in the SDK headers by default. (Alternatively, we could force
4777         # _WIN32_WINNT to 0x0602 in that case.)
4778         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4779             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4780 #ifdef WINAPI_FAMILY
4781 #include <winapifamily.h>
4782 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4783 #error not desktop
4784 #endif
4785 #endif
4786 EOF
4787     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4788         eval ${pfx}libc_type=klibc
4789     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4790         eval ${pfx}libc_type=bionic
4791     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4792         eval ${pfx}libc_type=solaris
4793         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4794     fi
4795     check_${pfx}cc <<EOF
4796 #include <time.h>
4797 void *v = localtime_r;
4798 EOF
4799 test "$?" != 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
4800 #include <time.h>
4801 void *v = localtime_r;
4802 EOF
4803
4804 }
4805
4806 probe_libc
4807 test -n "$libc_type" && enable libc_$libc_type
4808 probe_libc host_
4809 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4810
4811 case $libc_type in
4812     bionic)
4813         add_compat strtod.o strtod=avpriv_strtod
4814         ;;
4815 esac
4816
4817 # hacks for compiler/libc/os combinations
4818
4819 if enabled_all tms470 libc_glibc; then
4820     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4821     add_cppflags -D__USER_LABEL_PREFIX__=
4822     add_cppflags -D__builtin_memset=memset
4823     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4824     add_cflags   -pds=48    # incompatible redefinition of macro
4825 fi
4826
4827 if enabled_all ccc libc_glibc; then
4828     add_ldflags -Wl,-z,now  # calls to libots crash without this
4829 fi
4830
4831 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4832     add_cppflags '-I\$(SRC_PATH)/compat/float'
4833
4834 esc(){
4835     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4836 }
4837
4838 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4839
4840 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4841
4842 set_default libdir
4843 : ${shlibdir_default:="$libdir"}
4844 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4845
4846 set_default $PATHS_LIST
4847 set_default nm
4848
4849 # we need to build at least one lib type
4850 if ! enabled_any static shared; then
4851     cat <<EOF
4852 At least one library type must be built.
4853 Specify --enable-static to build the static libraries or --enable-shared to
4854 build the shared libraries as well. To only build the shared libraries specify
4855 --disable-static in addition to --enable-shared.
4856 EOF
4857     exit 1;
4858 fi
4859
4860 die_license_disabled() {
4861     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4862 }
4863
4864 die_license_disabled_gpl() {
4865     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4866 }
4867
4868 die_license_disabled gpl frei0r
4869 die_license_disabled gpl libcdio
4870 die_license_disabled gpl librubberband