avcodec: Remove libaacplus
[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-aacenc    enable AAC encoding via libvo-aacenc [no]
258   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
259   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
260                            native implementation exists [no]
261   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
262   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
263   --enable-libwebp         enable WebP encoding via libwebp [no]
264   --enable-libx264         enable H.264 encoding via x264 [no]
265   --enable-libx265         enable HEVC encoding via x265 [no]
266   --enable-libxavs         enable AVS encoding via xavs [no]
267   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
268   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
269   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
270   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
271   --enable-libxvid         enable Xvid encoding via xvidcore,
272                            native MPEG-4/Xvid encoder exists [no]
273   --enable-libzimg         enable z.lib, needed for zscale filter [no]
274   --enable-libzmq          enable message passing via libzmq [no]
275   --enable-libzvbi         enable teletext support via libzvbi [no]
276   --disable-lzma           disable lzma [autodetect]
277   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
278   --enable-mmal            enable decoding via MMAL [no]
279   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
280   --enable-nvenc           enable NVIDIA NVENC support [no]
281   --enable-openal          enable OpenAL 1.1 capture support [no]
282   --enable-opencl          enable OpenCL code
283   --enable-opengl          enable OpenGL rendering [no]
284   --enable-openssl         enable openssl, needed for https support
285                            if gnutls is not used [no]
286   --disable-schannel       disable SChannel SSP, needed for TLS support on
287                            Windows if openssl and gnutls are not used [autodetect]
288   --disable-sdl            disable sdl [autodetect]
289   --disable-securetransport disable Secure Transport, needed for TLS support
290                            on OSX if openssl and gnutls are not used [autodetect]
291   --enable-x11grab         enable X11 grabbing (legacy) [no]
292   --disable-xlib           disable xlib [autodetect]
293   --disable-zlib           disable zlib [autodetect]
294
295 Toolchain options:
296   --arch=ARCH              select architecture [$arch]
297   --cpu=CPU                select the minimum required CPU (affects
298                            instruction selection, may crash on older CPUs)
299   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
300   --progs-suffix=SUFFIX    program name suffix []
301   --enable-cross-compile   assume a cross-compiler is used
302   --sysroot=PATH           root of cross-build tree
303   --sysinclude=PATH        location of cross-build system headers
304   --target-os=OS           compiler targets OS [$target_os]
305   --target-exec=CMD        command to run executables on target
306   --target-path=DIR        path to view of build directory on target
307   --target-samples=DIR     path to samples directory on target
308   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
309   --toolchain=NAME         set tool defaults according to NAME
310   --nm=NM                  use nm tool NM [$nm_default]
311   --ar=AR                  use archive tool AR [$ar_default]
312   --as=AS                  use assembler AS [$as_default]
313   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
314   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
315   --cc=CC                  use C compiler CC [$cc_default]
316   --cxx=CXX                use C compiler CXX [$cxx_default]
317   --objcc=OCC              use ObjC compiler OCC [$cc_default]
318   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
319   --ld=LD                  use linker LD [$ld_default]
320   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
321   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
322   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
323   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
324   --host-cc=HOSTCC         use host C compiler HOSTCC
325   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
326   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
327   --host-ld=HOSTLD         use host linker HOSTLD
328   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
329   --host-libs=HLIBS        use libs HLIBS when linking for host
330   --host-os=OS             compiler host OS [$target_os]
331   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
332   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
333   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
334   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
335   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
336   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
337   --extra-libs=ELIBS       add ELIBS [$ELIBS]
338   --extra-version=STRING   version string suffix []
339   --optflags=OPTFLAGS      override optimization-related compiler flags
340   --build-suffix=SUFFIX    library name suffix []
341   --enable-pic             build position-independent code
342   --enable-thumb           compile for Thumb instruction set
343   --enable-lto             use link-time optimization
344   --env="ENV=override"     override the environment variables
345
346 Advanced options (experts only):
347   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
348   --custom-allocator=NAME  use a supported custom allocator
349   --disable-symver         disable symbol versioning
350   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
351   --disable-safe-bitstream-reader
352                            disable buffer boundary checking in bitreaders
353                            (faster, but may crash)
354   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
355   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
356
357 Optimization options (experts only):
358   --disable-asm            disable all assembly optimizations
359   --disable-altivec        disable AltiVec optimizations
360   --disable-vsx            disable VSX optimizations
361   --disable-power8         disable POWER8 optimizations
362   --disable-amd3dnow       disable 3DNow! optimizations
363   --disable-amd3dnowext    disable 3DNow! extended optimizations
364   --disable-mmx            disable MMX optimizations
365   --disable-mmxext         disable MMXEXT optimizations
366   --disable-sse            disable SSE optimizations
367   --disable-sse2           disable SSE2 optimizations
368   --disable-sse3           disable SSE3 optimizations
369   --disable-ssse3          disable SSSE3 optimizations
370   --disable-sse4           disable SSE4 optimizations
371   --disable-sse42          disable SSE4.2 optimizations
372   --disable-avx            disable AVX optimizations
373   --disable-xop            disable XOP optimizations
374   --disable-fma3           disable FMA3 optimizations
375   --disable-fma4           disable FMA4 optimizations
376   --disable-avx2           disable AVX2 optimizations
377   --disable-aesni          disable AESNI optimizations
378   --disable-armv5te        disable armv5te optimizations
379   --disable-armv6          disable armv6 optimizations
380   --disable-armv6t2        disable armv6t2 optimizations
381   --disable-vfp            disable VFP optimizations
382   --disable-neon           disable NEON optimizations
383   --disable-inline-asm     disable use of inline assembly
384   --disable-yasm           disable use of nasm/yasm assembly
385   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
386   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
387   --disable-msa            disable MSA optimizations
388   --disable-mipsfpu        disable floating point MIPS optimizations
389   --disable-mmi            disable Loongson SIMD optimizations
390   --disable-fast-unaligned consider unaligned accesses slow
391
392 Developer options (useful when working on FFmpeg itself):
393   --disable-debug          disable debugging symbols
394   --enable-debug=LEVEL     set the debug level [$debuglevel]
395   --disable-optimizations  disable compiler optimizations
396   --enable-extra-warnings  enable more compiler warnings
397   --disable-stripping      disable stripping of executables and shared libraries
398   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
399                            2 causes a slowdown at runtime.
400   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
401   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
402                            leaks and errors, using the specified valgrind binary.
403                            Cannot be combined with --target-exec
404   --enable-ftrapv          Trap arithmetic overflows
405   --samples=PATH           location of test samples for FATE, if not set use
406                            \$FATE_SAMPLES at make invocation time.
407   --enable-neon-clobber-test check NEON registers for clobbering (should be
408                            used only for debugging purposes)
409   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
410                            should be used only for debugging purposes)
411   --enable-random          randomly enable/disable components
412   --disable-random
413   --enable-random=LIST     randomly enable/disable specific components or
414   --disable-random=LIST    component groups. LIST is a comma-separated list
415                            of NAME[:PROB] entries where NAME is a component
416                            (group) and PROB the probability associated with
417                            NAME (default 0.5).
418   --random-seed=VALUE      seed value for --enable/disable-random
419   --disable-valgrind-backtrace do not print a backtrace under Valgrind
420                            (only applies to --disable-optimizations builds)
421
422 NOTE: Object files are built at the place where configure is launched.
423 EOF
424   exit 0
425 }
426
427 quotes='""'
428 if test -t 1 && which tput >/dev/null 2>&1; then
429     ncolors=$(tput colors)
430     if test -n "$ncolors" && test $ncolors -ge 8; then
431         bold_color=$(tput bold)
432         warn_color=$(tput setaf 3)
433         error_color=$(tput setaf 1)
434         reset_color=$(tput sgr0)
435     fi
436     # 72 used instead of 80 since that's the default of pr
437     ncols=$(tput cols)
438 fi
439 : ${ncols:=72}
440
441 log(){
442     echo "$@" >> $logfile
443 }
444
445 log_file(){
446     log BEGIN $1
447     pr -n -t $1 >> $logfile
448     log END $1
449 }
450
451 warn(){
452     log "WARNING: $*"
453     WARNINGS="${WARNINGS}WARNING: $*\n"
454 }
455
456 die(){
457     log "$@"
458     echo "$error_color$bold_color$@$reset_color"
459     cat <<EOF
460
461 If you think configure made a mistake, make sure you are using the latest
462 version from Git.  If the latest version fails, report the problem to the
463 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
464 EOF
465     if disabled logging; then
466         cat <<EOF
467 Rerun configure with logging enabled (do not use --disable-logging), and
468 include the log this produces with your report.
469 EOF
470     else
471         cat <<EOF
472 Include the log file "$logfile" produced by configure as this will help
473 solve the problem.
474 EOF
475     fi
476     exit 1
477 }
478
479 # Avoid locale weirdness, besides we really just want to translate ASCII.
480 toupper(){
481     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
482 }
483
484 tolower(){
485     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
486 }
487
488 c_escape(){
489     echo "$*" | sed 's/["\\]/\\\0/g'
490 }
491
492 sh_quote(){
493     v=$(echo "$1" | sed "s/'/'\\\\''/g")
494     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
495     echo "$v"
496 }
497
498 cleanws(){
499     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
500 }
501
502 filter(){
503     pat=$1
504     shift
505     for v; do
506         eval "case $v in $pat) echo $v ;; esac"
507     done
508 }
509
510 filter_out(){
511     pat=$1
512     shift
513     for v; do
514         eval "case $v in $pat) ;; *) echo $v ;; esac"
515     done
516 }
517
518 map(){
519     m=$1
520     shift
521     for v; do eval $m; done
522 }
523
524 add_suffix(){
525     suffix=$1
526     shift
527     for v; do echo ${v}${suffix}; done
528 }
529
530 set_all(){
531     value=$1
532     shift
533     for var in $*; do
534         eval $var=$value
535     done
536 }
537
538 set_weak(){
539     value=$1
540     shift
541     for var; do
542         eval : \${$var:=$value}
543     done
544 }
545
546 sanitize_var_name(){
547     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
548 }
549
550 set_safe(){
551     var=$1
552     shift
553     eval $(sanitize_var_name "$var")='$*'
554 }
555
556 get_safe(){
557     eval echo \$$(sanitize_var_name "$1")
558 }
559
560 pushvar(){
561     for pvar in $*; do
562         eval level=\${${pvar}_level:=0}
563         eval ${pvar}_${level}="\$$pvar"
564         eval ${pvar}_level=$(($level+1))
565     done
566 }
567
568 popvar(){
569     for pvar in $*; do
570         eval level=\${${pvar}_level:-0}
571         test $level = 0 && continue
572         eval level=$(($level-1))
573         eval $pvar="\${${pvar}_${level}}"
574         eval ${pvar}_level=$level
575         eval unset ${pvar}_${level}
576     done
577 }
578
579 enable(){
580     set_all yes $*
581 }
582
583 disable(){
584     set_all no $*
585 }
586
587 enable_weak(){
588     set_weak yes $*
589 }
590
591 disable_weak(){
592     set_weak no $*
593 }
594
595 enable_safe(){
596     for var; do
597         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
598     done
599 }
600
601 disable_safe(){
602     for var; do
603         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
604     done
605 }
606
607 do_enable_deep(){
608     for var; do
609         enabled $var && continue
610         eval sel="\$${var}_select"
611         eval sgs="\$${var}_suggest"
612         pushvar var sgs
613         enable_deep $sel
614         popvar sgs
615         enable_deep_weak $sgs
616         popvar var
617     done
618 }
619
620 enable_deep(){
621     do_enable_deep $*
622     enable $*
623 }
624
625 enable_deep_weak(){
626     for var; do
627         disabled $var && continue
628         pushvar var
629         do_enable_deep $var
630         popvar var
631         enable_weak $var
632     done
633 }
634
635 enabled(){
636     test "${1#!}" = "$1" && op='=' || op=!=
637     eval test "x\$${1#!}" $op "xyes"
638 }
639
640 disabled(){
641     test "${1#!}" = "$1" && op='=' || op=!=
642     eval test "x\$${1#!}" $op "xno"
643 }
644
645 enabled_all(){
646     for opt; do
647         enabled $opt || return 1
648     done
649 }
650
651 disabled_all(){
652     for opt; do
653         disabled $opt || return 1
654     done
655 }
656
657 enabled_any(){
658     for opt; do
659         enabled $opt && return 0
660     done
661 }
662
663 disabled_any(){
664     for opt; do
665         disabled $opt && return 0
666     done
667     return 1
668 }
669
670 set_default(){
671     for opt; do
672         eval : \${$opt:=\$${opt}_default}
673     done
674 }
675
676 is_in(){
677     value=$1
678     shift
679     for var in $*; do
680         [ $var = $value ] && return 0
681     done
682     return 1
683 }
684
685 do_check_deps(){
686     for cfg; do
687         cfg="${cfg#!}"
688         enabled ${cfg}_checking && die "Circular dependency for $cfg."
689         disabled ${cfg}_checking && continue
690         enable ${cfg}_checking
691         append allopts $cfg
692
693         eval dep_all="\$${cfg}_deps"
694         eval dep_any="\$${cfg}_deps_any"
695         eval dep_sel="\$${cfg}_select"
696         eval dep_sgs="\$${cfg}_suggest"
697         eval dep_ifa="\$${cfg}_if"
698         eval dep_ifn="\$${cfg}_if_any"
699
700         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
701         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
702         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
703
704         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
705         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
706         enabled_all  $dep_all || disable $cfg
707         enabled_any  $dep_any || disable $cfg
708         disabled_any $dep_sel && disable $cfg
709
710         if enabled $cfg; then
711             enable_deep $dep_sel
712             enable_deep_weak $dep_sgs
713         fi
714
715         disable ${cfg}_checking
716     done
717 }
718
719 check_deps(){
720     unset allopts
721
722     do_check_deps "$@"
723
724     for cfg in $allopts; do
725         enabled $cfg || continue
726         eval dep_extralibs="\$${cfg}_extralibs"
727         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
728     done
729 }
730
731 print_config(){
732     pfx=$1
733     files=$2
734     shift 2
735     map 'eval echo "$v \${$v:-no}"' "$@" |
736     awk "BEGIN { split(\"$files\", files) }
737         {
738             c = \"$pfx\" toupper(\$1);
739             v = \$2;
740             sub(/yes/, 1, v);
741             sub(/no/,  0, v);
742             for (f in files) {
743                 file = files[f];
744                 if (file ~ /\\.h\$/) {
745                     printf(\"#define %s %d\\n\", c, v) >>file;
746                 } else if (file ~ /\\.asm\$/) {
747                     printf(\"%%define %s %d\\n\", c, v) >>file;
748                 } else if (file ~ /\\.mak\$/) {
749                     n = -v ? \"\" : \"!\";
750                     printf(\"%s%s=yes\\n\", n, c) >>file;
751                 } else if (file ~ /\\.texi\$/) {
752                     pre = -v ? \"\" : \"@c \";
753                     yesno = \$2;
754                     c2 = tolower(c);
755                     gsub(/_/, \"-\", c2);
756                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
757                 }
758             }
759         }"
760 }
761
762 print_enabled(){
763     suf=$1
764     shift
765     for v; do
766         enabled $v && printf "%s\n" ${v%$suf};
767     done
768 }
769
770 append(){
771     var=$1
772     shift
773     eval "$var=\"\$$var $*\""
774 }
775
776 prepend(){
777     var=$1
778     shift
779     eval "$var=\"$* \$$var\""
780 }
781
782 unique(){
783     var=$1
784     uniq_list=""
785     for tok in $(eval echo \$$var); do
786         uniq_list="$(filter_out $tok $uniq_list) $tok"
787     done
788     eval "$var=\"${uniq_list}\""
789 }
790
791 add_cppflags(){
792     append CPPFLAGS "$@"
793 }
794
795 add_cflags(){
796     append CFLAGS $($cflags_filter "$@")
797 }
798
799 add_cxxflags(){
800     append CXXFLAGS $($cflags_filter "$@")
801 }
802
803 add_asflags(){
804     append ASFLAGS $($asflags_filter "$@")
805 }
806
807 add_objcflags(){
808     append OBJCFLAGS $($objcflags_filter "$@")
809 }
810
811 add_ldflags(){
812     append LDFLAGS $($ldflags_filter "$@")
813 }
814
815 add_ldexeflags(){
816     append LDEXEFLAGS $($ldflags_filter "$@")
817 }
818
819 add_ldlibflags(){
820     append LDLIBFLAGS $($ldflags_filter "$@")
821 }
822
823 add_stripflags(){
824     append ASMSTRIPFLAGS "$@"
825 }
826
827 add_extralibs(){
828     prepend extralibs $($ldflags_filter "$@")
829 }
830
831 add_host_cppflags(){
832     append host_cppflags "$@"
833 }
834
835 add_host_cflags(){
836     append host_cflags $($host_cflags_filter "$@")
837 }
838
839 add_host_ldflags(){
840     append host_ldflags $($host_ldflags_filter "$@")
841 }
842
843 add_compat(){
844     append compat_objs $1
845     shift
846     map 'add_cppflags -D$v' "$@"
847 }
848
849 check_cmd(){
850     log "$@"
851     "$@" >> $logfile 2>&1
852 }
853
854 check_stat(){
855     log check_stat "$@"
856     stat "$1" >> $logfile 2>&1
857 }
858
859 cc_o(){
860     eval printf '%s\\n' $CC_O
861 }
862
863 cc_e(){
864     eval printf '%s\\n' $CC_E
865 }
866
867 check_cc(){
868     log check_cc "$@"
869     cat > $TMPC
870     log_file $TMPC
871     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
872 }
873
874 check_cxx(){
875     log check_cxx "$@"
876     cat > $TMPCPP
877     log_file $TMPCPP
878     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
879 }
880
881 check_objcc(){
882     log check_objcc "$@"
883     cat > $TMPM
884     log_file $TMPM
885     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
886 }
887
888 check_cpp(){
889     log check_cpp "$@"
890     cat > $TMPC
891     log_file $TMPC
892     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
893 }
894
895 as_o(){
896     eval printf '%s\\n' $AS_O
897 }
898
899 check_as(){
900     log check_as "$@"
901     cat > $TMPS
902     log_file $TMPS
903     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
904 }
905
906 check_inline_asm(){
907     log check_inline_asm "$@"
908     name="$1"
909     code="$2"
910     shift 2
911     disable $name
912     check_cc "$@" <<EOF && enable $name
913 void foo(void){ __asm__ volatile($code); }
914 EOF
915 }
916
917 check_insn(){
918     log check_insn "$@"
919     check_inline_asm ${1}_inline "\"$2\""
920     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
921 }
922
923 check_yasm(){
924     log check_yasm "$@"
925     echo "$1" > $TMPS
926     log_file $TMPS
927     shift 1
928     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
929 }
930
931 ld_o(){
932     eval printf '%s\\n' $LD_O
933 }
934
935 check_ld(){
936     log check_ld "$@"
937     type=$1
938     shift 1
939     flags=$(filter_out '-l*|*.so' $@)
940     libs=$(filter '-l*|*.so' $@)
941     check_$type $($cflags_filter $flags) || return
942     flags=$($ldflags_filter $flags)
943     libs=$($ldflags_filter $libs)
944     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
945 }
946
947 print_include(){
948     hdr=$1
949     test "${hdr%.h}" = "${hdr}" &&
950         echo "#include $hdr"    ||
951         echo "#include <$hdr>"
952 }
953
954 check_code(){
955     log check_code "$@"
956     check=$1
957     headers=$2
958     code=$3
959     shift 3
960     {
961         for hdr in $headers; do
962             print_include $hdr
963         done
964         echo "int main(void) { $code; return 0; }"
965     } | check_$check "$@"
966 }
967
968 check_cppflags(){
969     log check_cppflags "$@"
970     check_cc "$@" <<EOF && append CPPFLAGS "$@"
971 int x;
972 EOF
973 }
974
975 test_cflags(){
976     log test_cflags "$@"
977     set -- $($cflags_filter "$@")
978     check_cc "$@" <<EOF
979 int x;
980 EOF
981 }
982
983 check_cflags(){
984     log check_cflags "$@"
985     test_cflags "$@" && add_cflags "$@"
986 }
987
988 check_cxxflags(){
989     log check_cxxflags "$@"
990     set -- $($cflags_filter "$@")
991     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
992 int x;
993 EOF
994 }
995
996 test_objcflags(){
997     log test_cflags "$@"
998     set -- $($cflags_filter "$@")
999     check_objcc "$@" <<EOF
1000 int x;
1001 EOF
1002 }
1003
1004 check_objcflags(){
1005     log check_cflags "$@"
1006     test_objcflags "$@" && add_objcflags "$@"
1007 }
1008
1009 test_ldflags(){
1010     log test_ldflags "$@"
1011     check_ld "cc" "$@" <<EOF
1012 int main(void){ return 0; }
1013 EOF
1014 }
1015
1016 check_ldflags(){
1017     log check_ldflags "$@"
1018     test_ldflags "$@" && add_ldflags "$@"
1019 }
1020
1021 test_stripflags(){
1022     log test_stripflags "$@"
1023     # call check_cc to get a fresh TMPO
1024     check_cc <<EOF
1025 int main(void) { return 0; }
1026 EOF
1027     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1028 }
1029
1030 check_stripflags(){
1031     log check_stripflags "$@"
1032     test_stripflags "$@" && add_stripflags "$@"
1033 }
1034
1035 check_header(){
1036     log check_header "$@"
1037     header=$1
1038     shift
1039     disable_safe $header
1040     check_cpp "$@" <<EOF && enable_safe $header
1041 #include <$header>
1042 int x;
1043 EOF
1044 }
1045
1046 check_header_objcc(){
1047     log check_header_objcc "$@"
1048     rm -f -- "$TMPO"
1049     header=$1
1050     shift
1051     disable_safe $header
1052     {
1053        echo "#include <$header>"
1054        echo "int main(void) { return 0; }"
1055     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1056 }
1057
1058 check_func(){
1059     log check_func "$@"
1060     func=$1
1061     shift
1062     disable $func
1063     check_ld "cc" "$@" <<EOF && enable $func
1064 extern int $func();
1065 int main(void){ $func(); }
1066 EOF
1067 }
1068
1069 check_complexfunc(){
1070     log check_complexfunc "$@"
1071     func=$1
1072     narg=$2
1073     shift 2
1074     test $narg = 2 && args="f, g" || args="f * I"
1075     disable $func
1076     check_ld "cc" "$@" <<EOF && enable $func
1077 #include <complex.h>
1078 #include <math.h>
1079 float foo(complex float f, complex float g) { return $func($args); }
1080 int main(void){ return (int) foo; }
1081 EOF
1082 }
1083
1084 check_mathfunc(){
1085     log check_mathfunc "$@"
1086     func=$1
1087     narg=$2
1088     shift 2
1089     test $narg = 2 && args="f, g" || args="f"
1090     disable $func
1091     check_ld "cc" "$@" <<EOF && enable $func
1092 #include <math.h>
1093 float foo(float f, float g) { return $func($args); }
1094 int main(void){ return (int) foo; }
1095 EOF
1096 }
1097
1098 check_func_headers(){
1099     log check_func_headers "$@"
1100     headers=$1
1101     funcs=$2
1102     shift 2
1103     {
1104         for hdr in $headers; do
1105             print_include $hdr
1106         done
1107         for func in $funcs; do
1108             echo "long check_$func(void) { return (long) $func; }"
1109         done
1110         echo "int main(void) { return 0; }"
1111     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1112 }
1113
1114 check_class_headers_cpp(){
1115     log check_class_headers_cpp "$@"
1116     headers=$1
1117     classes=$2
1118     shift 2
1119     {
1120         for hdr in $headers; do
1121             echo "#include <$hdr>"
1122         done
1123         echo "int main(void) { "
1124         i=1
1125         for class in $classes; do
1126             echo "$class obj$i;"
1127             i=$(expr $i + 1)
1128         done
1129         echo "return 0; }"
1130     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1131 }
1132
1133 check_cpp_condition(){
1134     log check_cpp_condition "$@"
1135     header=$1
1136     condition=$2
1137     shift 2
1138     check_cpp "$@" <<EOF
1139 #include <$header>
1140 #if !($condition)
1141 #error "unsatisfied condition: $condition"
1142 #endif
1143 EOF
1144 }
1145
1146 check_lib(){
1147     log check_lib "$@"
1148     header="$1"
1149     func="$2"
1150     shift 2
1151     check_header $header && check_func $func "$@" && add_extralibs "$@"
1152 }
1153
1154 check_lib2(){
1155     log check_lib2 "$@"
1156     headers="$1"
1157     funcs="$2"
1158     shift 2
1159     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1160 }
1161
1162 check_lib_cpp(){
1163     log check_lib_cpp "$@"
1164     headers="$1"
1165     classes="$2"
1166     shift 2
1167     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1168 }
1169
1170 check_pkg_config(){
1171     log check_pkg_config "$@"
1172     pkgandversion="$1"
1173     pkg="${1%% *}"
1174     headers="$2"
1175     funcs="$3"
1176     shift 3
1177     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1178     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1179     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1180     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1181         set_safe "${pkg}_cflags" $pkg_cflags   &&
1182         set_safe "${pkg}_libs"   $pkg_libs
1183 }
1184
1185 check_exec(){
1186     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1187 }
1188
1189 check_exec_crash(){
1190     code=$(cat)
1191
1192     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1193     # are safe but may not be available everywhere.  Thus we use
1194     # raise(SIGTERM) instead.  The check is run in a subshell so we
1195     # can redirect the "Terminated" message from the shell.  SIGBUS
1196     # is not defined by standard C so it is used conditionally.
1197
1198     (check_exec "$@") >> $logfile 2>&1 <<EOF
1199 #include <signal.h>
1200 static void sighandler(int sig){
1201     raise(SIGTERM);
1202 }
1203 int foo(void){
1204     $code
1205 }
1206 int (*func_ptr)(void) = foo;
1207 int main(void){
1208     signal(SIGILL, sighandler);
1209     signal(SIGFPE, sighandler);
1210     signal(SIGSEGV, sighandler);
1211 #ifdef SIGBUS
1212     signal(SIGBUS, sighandler);
1213 #endif
1214     return func_ptr();
1215 }
1216 EOF
1217 }
1218
1219 check_type(){
1220     log check_type "$@"
1221     headers=$1
1222     type=$2
1223     shift 2
1224     disable_safe "$type"
1225     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1226 }
1227
1228 check_struct(){
1229     log check_struct "$@"
1230     headers=$1
1231     struct=$2
1232     member=$3
1233     shift 3
1234     disable_safe "${struct}_${member}"
1235     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1236         enable_safe "${struct}_${member}"
1237 }
1238
1239 check_builtin(){
1240     log check_builtin "$@"
1241     name=$1
1242     headers=$2
1243     builtin=$3
1244     shift 3
1245     disable "$name"
1246     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1247 }
1248
1249 check_compile_assert(){
1250     log check_compile_assert "$@"
1251     name=$1
1252     headers=$2
1253     condition=$3
1254     shift 3
1255     disable "$name"
1256     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1257 }
1258
1259 require(){
1260     name="$1"
1261     header="$2"
1262     func="$3"
1263     shift 3
1264     check_lib $header $func "$@" || die "ERROR: $name not found"
1265 }
1266
1267 require2(){
1268     name="$1"
1269     headers="$2"
1270     func="$3"
1271     shift 3
1272     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1273 }
1274
1275 require_cpp(){
1276     name="$1"
1277     headers="$2"
1278     classes="$3"
1279     shift 3
1280     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1281 }
1282
1283 use_pkg_config(){
1284     pkg="$1"
1285     check_pkg_config "$@" || return 1
1286     add_cflags    $(get_safe "${pkg}_cflags")
1287     add_extralibs $(get_safe "${pkg}_libs")
1288 }
1289
1290 require_pkg_config(){
1291     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1292 }
1293
1294 require_libfreetype(){
1295     log require_libfreetype "$@"
1296     pkg="freetype2"
1297     check_cmd $pkg_config --exists --print-errors $pkg \
1298       || die "ERROR: $pkg not found"
1299     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1300     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1301     {
1302         echo "#include <ft2build.h>"
1303         echo "#include FT_FREETYPE_H"
1304         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1305         echo "int main(void) { return 0; }"
1306     } | check_ld "cc" $pkg_cflags $pkg_libs \
1307       && set_safe "${pkg}_cflags" $pkg_cflags \
1308       && set_safe "${pkg}_libs"   $pkg_libs \
1309       || die "ERROR: $pkg not found"
1310     add_cflags    $(get_safe "${pkg}_cflags")
1311     add_extralibs $(get_safe "${pkg}_libs")
1312 }
1313
1314 hostcc_e(){
1315     eval printf '%s\\n' $HOSTCC_E
1316 }
1317
1318 hostcc_o(){
1319     eval printf '%s\\n' $HOSTCC_O
1320 }
1321
1322 check_host_cc(){
1323     log check_host_cc "$@"
1324     cat > $TMPC
1325     log_file $TMPC
1326     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1327 }
1328
1329 check_host_cpp(){
1330     log check_host_cpp "$@"
1331     cat > $TMPC
1332     log_file $TMPC
1333     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1334 }
1335
1336 check_host_cppflags(){
1337     log check_host_cppflags "$@"
1338     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1339 int x;
1340 EOF
1341 }
1342
1343 check_host_cflags(){
1344     log check_host_cflags "$@"
1345     set -- $($host_cflags_filter "$@")
1346     check_host_cc "$@" <<EOF && append host_cflags "$@"
1347 int x;
1348 EOF
1349 }
1350
1351 check_host_cpp_condition(){
1352     log check_host_cpp_condition "$@"
1353     header=$1
1354     condition=$2
1355     shift 2
1356     check_host_cpp "$@" <<EOF
1357 #include <$header>
1358 #if !($condition)
1359 #error "unsatisfied condition: $condition"
1360 #endif
1361 EOF
1362 }
1363
1364 cp_if_changed(){
1365     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1366     mkdir -p "$(dirname $2)"
1367     $cp_f "$1" "$2"
1368 }
1369
1370 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1371 # system-dependent things.
1372
1373 AVCODEC_COMPONENTS="
1374     bsfs
1375     decoders
1376     encoders
1377     hwaccels
1378     parsers
1379 "
1380
1381 AVDEVICE_COMPONENTS="
1382     indevs
1383     outdevs
1384 "
1385 AVFILTER_COMPONENTS="
1386     filters
1387 "
1388 AVFORMAT_COMPONENTS="
1389     demuxers
1390     muxers
1391     protocols
1392 "
1393
1394 AVRESAMPLE_COMPONENTS=""
1395 AVUTIL_COMPONENTS=""
1396
1397 COMPONENT_LIST="
1398     $AVCODEC_COMPONENTS
1399     $AVDEVICE_COMPONENTS
1400     $AVFILTER_COMPONENTS
1401     $AVFORMAT_COMPONENTS
1402     $AVRESAMPLE_COMPONENTS
1403     $AVUTIL_COMPONENTS
1404 "
1405
1406 EXAMPLE_LIST="
1407     avio_reading_example
1408     avio_dir_cmd_example
1409     decoding_encoding_example
1410     demuxing_decoding_example
1411     extract_mvs_example
1412     filter_audio_example
1413     filtering_audio_example
1414     filtering_video_example
1415     metadata_example
1416     muxing_example
1417     qsvdec_example
1418     remuxing_example
1419     resampling_audio_example
1420     scaling_video_example
1421     transcode_aac_example
1422     transcoding_example
1423 "
1424
1425 EXTERNAL_LIBRARY_LIST="
1426     avisynth
1427     bzlib
1428     chromaprint
1429     crystalhd
1430     decklink
1431     frei0r
1432     gcrypt
1433     gmp
1434     gnutls
1435     iconv
1436     ladspa
1437     libass
1438     libbluray
1439     libbs2b
1440     libcaca
1441     libcdio
1442     libcelt
1443     libdc1394
1444     libdcadec
1445     libfaac
1446     libfdk_aac
1447     libflite
1448     libfontconfig
1449     libfreetype
1450     libfribidi
1451     libgme
1452     libgsm
1453     libiec61883
1454     libilbc
1455     libkvazaar
1456     libmfx
1457     libmodplug
1458     libmp3lame
1459     libnut
1460     libopencore_amrnb
1461     libopencore_amrwb
1462     libopencv
1463     libopenh264
1464     libopenjpeg
1465     libopus
1466     libpulse
1467     librtmp
1468     librubberband
1469     libschroedinger
1470     libshine
1471     libsmbclient
1472     libsnappy
1473     libsoxr
1474     libspeex
1475     libssh
1476     libtesseract
1477     libtheora
1478     libtwolame
1479     libutvideo
1480     libv4l2
1481     libvidstab
1482     libvo_aacenc
1483     libvo_amrwbenc
1484     libvorbis
1485     libvpx
1486     libwavpack
1487     libwebp
1488     libx264
1489     libx265
1490     libxavs
1491     libxcb
1492     libxcb_shm
1493     libxcb_shape
1494     libxcb_xfixes
1495     libxvid
1496     libzimg
1497     libzmq
1498     libzvbi
1499     lzma
1500     mmal
1501     netcdf
1502     nvenc
1503     openal
1504     opencl
1505     opengl
1506     openssl
1507     schannel
1508     sdl
1509     securetransport
1510     x11grab
1511     xlib
1512     zlib
1513 "
1514
1515 DOCUMENT_LIST="
1516     doc
1517     htmlpages
1518     manpages
1519     podpages
1520     txtpages
1521 "
1522
1523 FEATURE_LIST="
1524     ftrapv
1525     gray
1526     hardcoded_tables
1527     runtime_cpudetect
1528     safe_bitstream_reader
1529     shared
1530     small
1531     static
1532     swscale_alpha
1533 "
1534
1535 HWACCEL_LIST="
1536     d3d11va
1537     dxva2
1538     vaapi
1539     vda
1540     vdpau
1541     videotoolbox
1542     xvmc
1543 "
1544
1545 LIBRARY_LIST="
1546     avcodec
1547     avdevice
1548     avfilter
1549     avformat
1550     avresample
1551     avutil
1552     postproc
1553     swresample
1554     swscale
1555 "
1556
1557 LICENSE_LIST="
1558     gpl
1559     nonfree
1560     version3
1561 "
1562
1563 PROGRAM_LIST="
1564     ffplay
1565     ffprobe
1566     ffserver
1567     ffmpeg
1568 "
1569
1570 SUBSYSTEM_LIST="
1571     dct
1572     dwt
1573     error_resilience
1574     faan
1575     fast_unaligned
1576     fft
1577     lsp
1578     lzo
1579     mdct
1580     pixelutils
1581     network
1582     rdft
1583 "
1584
1585 CONFIG_LIST="
1586     $COMPONENT_LIST
1587     $DOCUMENT_LIST
1588     $EXAMPLE_LIST
1589     $EXTERNAL_LIBRARY_LIST
1590     $FEATURE_LIST
1591     $HWACCEL_LIST
1592     $LICENSE_LIST
1593     $LIBRARY_LIST
1594     $PROGRAM_LIST
1595     $SUBSYSTEM_LIST
1596     fontconfig
1597     incompatible_libav_abi
1598     memalign_hack
1599     memory_poisoning
1600     neon_clobber_test
1601     pic
1602     pod2man
1603     raise_major
1604     thumb
1605     valgrind_backtrace
1606     xmm_clobber_test
1607 "
1608
1609 THREADS_LIST="
1610     pthreads
1611     os2threads
1612     w32threads
1613 "
1614
1615 ATOMICS_LIST="
1616     atomics_gcc
1617     atomics_suncc
1618     atomics_win32
1619 "
1620
1621 ARCH_LIST="
1622     aarch64
1623     alpha
1624     arm
1625     avr32
1626     avr32_ap
1627     avr32_uc
1628     bfin
1629     ia64
1630     m68k
1631     mips
1632     mips64
1633     parisc
1634     ppc
1635     ppc64
1636     s390
1637     sh4
1638     sparc
1639     sparc64
1640     tilegx
1641     tilepro
1642     tomi
1643     x86
1644     x86_32
1645     x86_64
1646 "
1647
1648 ARCH_EXT_LIST_ARM="
1649     armv5te
1650     armv6
1651     armv6t2
1652     armv8
1653     neon
1654     vfp
1655     vfpv3
1656     setend
1657 "
1658
1659 ARCH_EXT_LIST_MIPS="
1660     mipsfpu
1661     mips32r2
1662     mips64r2
1663     mips32r6
1664     mips64r6
1665     mipsdsp
1666     mipsdspr2
1667     msa
1668 "
1669
1670 ARCH_EXT_LIST_LOONGSON="
1671     loongson2
1672     loongson3
1673     mmi
1674 "
1675
1676 ARCH_EXT_LIST_X86_SIMD="
1677     aesni
1678     amd3dnow
1679     amd3dnowext
1680     avx
1681     avx2
1682     fma3
1683     fma4
1684     mmx
1685     mmxext
1686     sse
1687     sse2
1688     sse3
1689     sse4
1690     sse42
1691     ssse3
1692     xop
1693 "
1694
1695 ARCH_EXT_LIST_PPC="
1696     altivec
1697     dcbzl
1698     ldbrx
1699     power8
1700     ppc4xx
1701     vsx
1702 "
1703
1704 ARCH_EXT_LIST_X86="
1705     $ARCH_EXT_LIST_X86_SIMD
1706     cpunop
1707     i686
1708 "
1709
1710 ARCH_EXT_LIST="
1711     $ARCH_EXT_LIST_ARM
1712     $ARCH_EXT_LIST_PPC
1713     $ARCH_EXT_LIST_X86
1714     $ARCH_EXT_LIST_MIPS
1715     $ARCH_EXT_LIST_LOONGSON
1716 "
1717
1718 ARCH_FEATURES="
1719     aligned_stack
1720     fast_64bit
1721     fast_clz
1722     fast_cmov
1723     local_aligned_8
1724     local_aligned_16
1725     local_aligned_32
1726     simd_align_16
1727 "
1728
1729 BUILTIN_LIST="
1730     atomic_cas_ptr
1731     atomic_compare_exchange
1732     machine_rw_barrier
1733     MemoryBarrier
1734     mm_empty
1735     rdtsc
1736     sarestart
1737     sync_val_compare_and_swap
1738 "
1739 HAVE_LIST_CMDLINE="
1740     inline_asm
1741     symver
1742     yasm
1743 "
1744
1745 HAVE_LIST_PUB="
1746     bigendian
1747     fast_unaligned
1748     incompatible_libav_abi
1749 "
1750
1751 HEADERS_LIST="
1752     alsa_asoundlib_h
1753     altivec_h
1754     arpa_inet_h
1755     asm_types_h
1756     cdio_paranoia_h
1757     cdio_paranoia_paranoia_h
1758     dev_bktr_ioctl_bt848_h
1759     dev_bktr_ioctl_meteor_h
1760     dev_ic_bt8xx_h
1761     dev_video_bktr_ioctl_bt848_h
1762     dev_video_meteor_ioctl_meteor_h
1763     direct_h
1764     dirent_h
1765     dlfcn_h
1766     d3d11_h
1767     dxva_h
1768     ES2_gl_h
1769     gsm_h
1770     io_h
1771     mach_mach_time_h
1772     machine_ioctl_bt848_h
1773     machine_ioctl_meteor_h
1774     malloc_h
1775     opencv2_core_core_c_h
1776     openjpeg_2_1_openjpeg_h
1777     openjpeg_2_0_openjpeg_h
1778     openjpeg_1_5_openjpeg_h
1779     OpenGL_gl3_h
1780     poll_h
1781     sndio_h
1782     soundcard_h
1783     sys_mman_h
1784     sys_param_h
1785     sys_resource_h
1786     sys_select_h
1787     sys_soundcard_h
1788     sys_time_h
1789     sys_un_h
1790     sys_videoio_h
1791     termios_h
1792     udplite_h
1793     unistd_h
1794     valgrind_valgrind_h
1795     windows_h
1796     winsock2_h
1797 "
1798
1799 INTRINSICS_LIST="
1800     intrinsics_neon
1801 "
1802
1803 COMPLEX_FUNCS="
1804     cabs
1805     cexp
1806 "
1807
1808 MATH_FUNCS="
1809     atanf
1810     atan2f
1811     cbrt
1812     cbrtf
1813     copysign
1814     cosf
1815     erf
1816     exp2
1817     exp2f
1818     expf
1819     hypot
1820     isfinite
1821     isinf
1822     isnan
1823     ldexpf
1824     llrint
1825     llrintf
1826     log2
1827     log2f
1828     log10f
1829     lrint
1830     lrintf
1831     powf
1832     rint
1833     round
1834     roundf
1835     sinf
1836     trunc
1837     truncf
1838 "
1839
1840 SYSTEM_FUNCS="
1841     access
1842     aligned_malloc
1843     arc4random
1844     clock_gettime
1845     closesocket
1846     CommandLineToArgvW
1847     CoTaskMemFree
1848     CryptGenRandom
1849     dlopen
1850     fcntl
1851     flt_lim
1852     fork
1853     getaddrinfo
1854     gethrtime
1855     getopt
1856     GetProcessAffinityMask
1857     GetProcessMemoryInfo
1858     GetProcessTimes
1859     getrusage
1860     GetSystemTimeAsFileTime
1861     gettimeofday
1862     glob
1863     glXGetProcAddress
1864     gmtime_r
1865     inet_aton
1866     isatty
1867     jack_port_get_latency_range
1868     kbhit
1869     localtime_r
1870     lstat
1871     lzo1x_999_compress
1872     mach_absolute_time
1873     MapViewOfFile
1874     memalign
1875     mkstemp
1876     mmap
1877     mprotect
1878     nanosleep
1879     PeekNamedPipe
1880     posix_memalign
1881     pthread_cancel
1882     sched_getaffinity
1883     SetConsoleTextAttribute
1884     SetConsoleCtrlHandler
1885     setmode
1886     setrlimit
1887     Sleep
1888     strerror_r
1889     sysconf
1890     sysctl
1891     usleep
1892     UTGetOSTypeFromString
1893     VirtualAlloc
1894     wglGetProcAddress
1895 "
1896
1897 TOOLCHAIN_FEATURES="
1898     as_dn_directive
1899     as_func
1900     as_object_arch
1901     asm_mod_q
1902     attribute_may_alias
1903     attribute_packed
1904     ebp_available
1905     ebx_available
1906     gnu_as
1907     gnu_windres
1908     ibm_asm
1909     inline_asm_direct_symbol_refs
1910     inline_asm_labels
1911     inline_asm_nonlocal_labels
1912     pragma_deprecated
1913     rsync_contimeout
1914     symver_asm_label
1915     symver_gnu_asm
1916     vfp_args
1917     xform_asm
1918     xmm_clobbers
1919 "
1920
1921 TYPES_LIST="
1922     CONDITION_VARIABLE_Ptr
1923     socklen_t
1924     struct_addrinfo
1925     struct_group_source_req
1926     struct_ip_mreq_source
1927     struct_ipv6_mreq
1928     struct_pollfd
1929     struct_rusage_ru_maxrss
1930     struct_sctp_event_subscribe
1931     struct_sockaddr_in6
1932     struct_sockaddr_sa_len
1933     struct_sockaddr_storage
1934     struct_stat_st_mtim_tv_nsec
1935     struct_v4l2_frmivalenum_discrete
1936 "
1937
1938 HAVE_LIST="
1939     $ARCH_EXT_LIST
1940     $(add_suffix _external $ARCH_EXT_LIST)
1941     $(add_suffix _inline   $ARCH_EXT_LIST)
1942     $ARCH_FEATURES
1943     $ATOMICS_LIST
1944     $BUILTIN_LIST
1945     $COMPLEX_FUNCS
1946     $HAVE_LIST_CMDLINE
1947     $HAVE_LIST_PUB
1948     $HEADERS_LIST
1949     $INTRINSICS_LIST
1950     $MATH_FUNCS
1951     $SYSTEM_FUNCS
1952     $THREADS_LIST
1953     $TOOLCHAIN_FEATURES
1954     $TYPES_LIST
1955     atomics_native
1956     dos_paths
1957     dxva2_lib
1958     dxva2api_cobj
1959     libc_msvcrt
1960     libdc1394_1
1961     libdc1394_2
1962     makeinfo
1963     makeinfo_html
1964     perl
1965     pod2man
1966     sdl
1967     section_data_rel_ro
1968     texi2html
1969     threads
1970     vaapi_x11
1971     vdpau_x11
1972     winrt
1973     xlib
1974 "
1975
1976 # options emitted with CONFIG_ prefix but not available on the command line
1977 CONFIG_EXTRA="
1978     aandcttables
1979     ac3dsp
1980     audio_frame_queue
1981     audiodsp
1982     blockdsp
1983     bswapdsp
1984     cabac
1985     dirac_parse
1986     dvprofile
1987     exif
1988     faandct
1989     faanidct
1990     fdctdsp
1991     flacdsp
1992     fmtconvert
1993     frame_thread_encoder
1994     g722dsp
1995     golomb
1996     gplv3
1997     h263dsp
1998     h264chroma
1999     h264dsp
2000     h264pred
2001     h264qpel
2002     hpeldsp
2003     huffman
2004     huffyuvdsp
2005     huffyuvencdsp
2006     idctdsp
2007     iirfilter
2008     imdct15
2009     intrax8
2010     ividsp
2011     jpegtables
2012     lgplv3
2013     libx262
2014     llauddsp
2015     llviddsp
2016     lpc
2017     lzf
2018     me_cmp
2019     mpeg_er
2020     mpegaudio
2021     mpegaudiodsp
2022     mpegvideo
2023     mpegvideoenc
2024     mss34dsp
2025     pixblockdsp
2026     qpeldsp
2027     qsv
2028     qsvdec
2029     qsvenc
2030     rangecoder
2031     riffdec
2032     riffenc
2033     rtpdec
2034     rtpenc_chain
2035     rv34dsp
2036     sinewin
2037     snappy
2038     startcode
2039     texturedsp
2040     texturedspenc
2041     tpeldsp
2042     videodsp
2043     vp3dsp
2044     vp56dsp
2045     vp8dsp
2046     wma_freqs
2047     wmv2dsp
2048 "
2049
2050 CMDLINE_SELECT="
2051     $ARCH_EXT_LIST
2052     $CONFIG_LIST
2053     $HAVE_LIST_CMDLINE
2054     $THREADS_LIST
2055     asm
2056     cross_compile
2057     debug
2058     extra_warnings
2059     logging
2060     lto
2061     optimizations
2062     rpath
2063     stripping
2064 "
2065
2066 PATHS_LIST="
2067     bindir
2068     datadir
2069     docdir
2070     incdir
2071     libdir
2072     mandir
2073     pkgconfigdir
2074     prefix
2075     shlibdir
2076 "
2077
2078 CMDLINE_SET="
2079     $PATHS_LIST
2080     ar
2081     arch
2082     as
2083     assert_level
2084     build_suffix
2085     cc
2086     objcc
2087     cpu
2088     cross_prefix
2089     custom_allocator
2090     cxx
2091     dep_cc
2092     doxygen
2093     env
2094     extra_version
2095     gas
2096     host_cc
2097     host_cflags
2098     host_ld
2099     host_ldflags
2100     host_libs
2101     host_os
2102     install
2103     ld
2104     logfile
2105     malloc_prefix
2106     nm
2107     optflags
2108     pkg_config
2109     pkg_config_flags
2110     progs_suffix
2111     random_seed
2112     ranlib
2113     samples
2114     strip
2115     sws_max_filter_size
2116     sysinclude
2117     sysroot
2118     target_exec
2119     target_os
2120     target_path
2121     target_samples
2122     tempprefix
2123     toolchain
2124     valgrind
2125     yasmexe
2126 "
2127
2128 CMDLINE_APPEND="
2129     extra_cflags
2130     extra_cxxflags
2131     extra_objcflags
2132     host_cppflags
2133 "
2134
2135 # code dependency declarations
2136
2137 # architecture extensions
2138
2139 armv5te_deps="arm"
2140 armv6_deps="arm"
2141 armv6t2_deps="arm"
2142 armv8_deps="aarch64"
2143 neon_deps_any="aarch64 arm"
2144 intrinsics_neon_deps="neon"
2145 vfp_deps_any="aarch64 arm"
2146 vfpv3_deps="vfp"
2147 setend_deps="arm"
2148
2149 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2150
2151 mipsfpu_deps="mips"
2152 mipsdsp_deps="mips"
2153 mipsdspr2_deps="mips"
2154 mips32r2_deps="mips"
2155 mips32r6_deps="mips"
2156 mips64r2_deps="mips"
2157 mips64r6_deps="mips"
2158 msa_deps="mips"
2159 mmi_deps="mips"
2160
2161 altivec_deps="ppc"
2162 dcbzl_deps="ppc"
2163 ldbrx_deps="ppc"
2164 ppc4xx_deps="ppc"
2165 vsx_deps="altivec"
2166 power8_deps="vsx"
2167
2168 cpunop_deps="i686"
2169 x86_64_select="i686"
2170 x86_64_suggest="fast_cmov"
2171
2172 amd3dnow_deps="mmx"
2173 amd3dnowext_deps="amd3dnow"
2174 i686_deps="x86"
2175 mmx_deps="x86"
2176 mmxext_deps="mmx"
2177 sse_deps="mmxext"
2178 sse2_deps="sse"
2179 sse3_deps="sse2"
2180 ssse3_deps="sse3"
2181 sse4_deps="ssse3"
2182 sse42_deps="sse4"
2183 aesni_deps="sse42"
2184 avx_deps="sse42"
2185 xop_deps="avx"
2186 fma3_deps="avx"
2187 fma4_deps="avx"
2188 avx2_deps="avx"
2189
2190 mmx_external_deps="yasm"
2191 mmx_inline_deps="inline_asm"
2192 mmx_suggest="mmx_external mmx_inline"
2193
2194 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2195     eval dep=\$${ext}_deps
2196     eval ${ext}_external_deps='"${dep}_external"'
2197     eval ${ext}_inline_deps='"${dep}_inline"'
2198     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2199 done
2200
2201 aligned_stack_if_any="aarch64 ppc x86"
2202 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2203 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2204 fast_unaligned_if_any="aarch64 ppc x86"
2205 simd_align_16_if_any="altivec neon sse"
2206
2207 # system capabilities
2208 symver_if_any="symver_asm_label symver_gnu_asm"
2209 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2210
2211 # threading support
2212 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2213 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2214 atomics_win32_if="MemoryBarrier"
2215 atomics_native_if_any="$ATOMICS_LIST"
2216 w32threads_deps="atomics_native"
2217 threads_if_any="$THREADS_LIST"
2218
2219 # subsystems
2220 dct_select="rdft"
2221 dirac_parse_select="golomb"
2222 error_resilience_select="me_cmp"
2223 faandct_deps="faan fdctdsp"
2224 faanidct_deps="faan idctdsp"
2225 frame_thread_encoder_deps="encoders threads"
2226 intrax8_select="error_resilience"
2227 mdct_select="fft"
2228 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2229 mpeg_er_select="error_resilience"
2230 mpegaudio_select="mpegaudiodsp"
2231 mpegaudiodsp_select="dct"
2232 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2233 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2234 qsvdec_select="qsv"
2235 qsvenc_select="qsv"
2236 rdft_select="fft"
2237
2238 # decoders / encoders
2239 aac_decoder_select="imdct15 mdct sinewin"
2240 aac_fixed_decoder_select="mdct sinewin"
2241 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2242 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2243 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2244 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2245 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2246 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2247 adpcm_g722_decoder_select="g722dsp"
2248 adpcm_g722_encoder_select="g722dsp"
2249 aic_decoder_select="golomb idctdsp"
2250 alac_encoder_select="lpc"
2251 als_decoder_select="bswapdsp"
2252 amrnb_decoder_select="lsp"
2253 amrwb_decoder_select="lsp"
2254 amv_decoder_select="sp5x_decoder exif"
2255 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2256 ape_decoder_select="bswapdsp llauddsp"
2257 apng_decoder_select="zlib"
2258 apng_encoder_select="huffyuvencdsp zlib"
2259 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2260 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2261 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2262 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2263 atrac1_decoder_select="mdct sinewin"
2264 atrac3_decoder_select="mdct"
2265 atrac3p_decoder_select="mdct sinewin"
2266 avrn_decoder_select="exif jpegtables"
2267 bink_decoder_select="blockdsp hpeldsp"
2268 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2269 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2270 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2271 cllc_decoder_select="bswapdsp"
2272 comfortnoise_encoder_select="lpc"
2273 cook_decoder_select="audiodsp mdct sinewin"
2274 cscd_decoder_select="lzo"
2275 cscd_decoder_suggest="zlib"
2276 dca_decoder_select="fmtconvert mdct"
2277 dds_decoder_select="texturedsp"
2278 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2279 dnxhd_decoder_select="blockdsp idctdsp"
2280 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2281 dvvideo_decoder_select="dvprofile idctdsp"
2282 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2283 dxa_decoder_select="zlib"
2284 dxv_decoder_select="lzf texturedsp"
2285 eac3_decoder_select="ac3_decoder"
2286 eac3_encoder_select="ac3_encoder"
2287 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2288 eatgq_decoder_select="aandcttables"
2289 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2290 exr_decoder_select="zlib"
2291 ffv1_decoder_select="golomb rangecoder"
2292 ffv1_encoder_select="rangecoder"
2293 ffvhuff_decoder_select="huffyuv_decoder"
2294 ffvhuff_encoder_select="huffyuv_encoder"
2295 fic_decoder_select="golomb"
2296 flac_decoder_select="flacdsp golomb"
2297 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2298 flashsv2_decoder_select="zlib"
2299 flashsv2_encoder_select="zlib"
2300 flashsv_decoder_select="zlib"
2301 flashsv_encoder_select="zlib"
2302 flv_decoder_select="h263_decoder"
2303 flv_encoder_select="h263_encoder"
2304 fourxm_decoder_select="blockdsp bswapdsp"
2305 fraps_decoder_select="bswapdsp huffman"
2306 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2307 g729_decoder_select="audiodsp"
2308 h261_decoder_select="mpegvideo"
2309 h261_encoder_select="aandcttables mpegvideoenc"
2310 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2311 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2312 h263i_decoder_select="h263_decoder"
2313 h263p_decoder_select="h263_decoder"
2314 h263p_encoder_select="h263_encoder"
2315 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2316 h264_decoder_suggest="error_resilience"
2317 h264_qsv_decoder_deps="libmfx"
2318 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2319 h264_qsv_encoder_deps="libmfx"
2320 h264_qsv_encoder_select="qsvenc"
2321 hap_decoder_select="snappy texturedsp"
2322 hap_encoder_deps="libsnappy"
2323 hap_encoder_select="texturedspenc"
2324 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2325 hevc_qsv_decoder_deps="libmfx"
2326 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2327 hevc_qsv_encoder_deps="libmfx"
2328 hevc_qsv_encoder_select="qsvenc"
2329 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2330 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2331 iac_decoder_select="imc_decoder"
2332 imc_decoder_select="bswapdsp fft mdct sinewin"
2333 indeo3_decoder_select="hpeldsp"
2334 indeo4_decoder_select="ividsp"
2335 indeo5_decoder_select="ividsp"
2336 interplay_video_decoder_select="hpeldsp"
2337 jpegls_decoder_select="golomb mjpeg_decoder"
2338 jpegls_encoder_select="golomb"
2339 jv_decoder_select="blockdsp"
2340 lagarith_decoder_select="huffyuvdsp"
2341 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2342 loco_decoder_select="golomb"
2343 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2344 metasound_decoder_select="lsp mdct sinewin"
2345 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2346 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2347 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2348 mjpegb_decoder_select="mjpeg_decoder"
2349 mlp_decoder_select="mlp_parser"
2350 motionpixels_decoder_select="bswapdsp"
2351 mp1_decoder_select="mpegaudio"
2352 mp1float_decoder_select="mpegaudio"
2353 mp2_decoder_select="mpegaudio"
2354 mp2float_decoder_select="mpegaudio"
2355 mp3_decoder_select="mpegaudio"
2356 mp3adu_decoder_select="mpegaudio"
2357 mp3adufloat_decoder_select="mpegaudio"
2358 mp3float_decoder_select="mpegaudio"
2359 mp3on4_decoder_select="mpegaudio"
2360 mp3on4float_decoder_select="mpegaudio"
2361 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2362 mpc8_decoder_select="mpegaudiodsp"
2363 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2364 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2365 mpegvideo_decoder_select="mpegvideo"
2366 mpeg1video_decoder_select="mpegvideo"
2367 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2368 mpeg2video_decoder_select="mpegvideo"
2369 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2370 mpeg2_qsv_decoder_deps="libmfx"
2371 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2372 mpeg2_qsv_encoder_deps="libmfx"
2373 mpeg2_qsv_encoder_select="qsvenc"
2374 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2375 mpeg4_encoder_select="h263_encoder"
2376 msa1_decoder_select="mss34dsp"
2377 msmpeg4v1_decoder_select="h263_decoder"
2378 msmpeg4v2_decoder_select="h263_decoder"
2379 msmpeg4v2_encoder_select="h263_encoder"
2380 msmpeg4v3_decoder_select="h263_decoder"
2381 msmpeg4v3_encoder_select="h263_encoder"
2382 mss2_decoder_select="vc1_decoder"
2383 mts2_decoder_select="mss34dsp"
2384 mxpeg_decoder_select="mjpeg_decoder"
2385 nellymoser_decoder_select="mdct sinewin"
2386 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2387 nuv_decoder_select="idctdsp lzo"
2388 on2avc_decoder_select="mdct"
2389 opus_decoder_deps="swresample"
2390 opus_decoder_select="imdct15"
2391 png_decoder_select="zlib"
2392 png_encoder_select="huffyuvencdsp zlib"
2393 prores_decoder_select="blockdsp idctdsp"
2394 prores_encoder_select="fdctdsp"
2395 qcelp_decoder_select="lsp"
2396 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2397 ra_144_decoder_select="audiodsp"
2398 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2399 ralf_decoder_select="golomb"
2400 rawvideo_decoder_select="bswapdsp"
2401 rscc_decoder_select="zlib"
2402 rtjpeg_decoder_select="me_cmp"
2403 rv10_decoder_select="h263_decoder"
2404 rv10_encoder_select="h263_encoder"
2405 rv20_decoder_select="h263_decoder"
2406 rv20_encoder_select="h263_encoder"
2407 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2408 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2409 screenpresso_decoder_select="zlib"
2410 shorten_decoder_select="golomb"
2411 sipr_decoder_select="lsp"
2412 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2413 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2414 sonic_decoder_select="golomb rangecoder"
2415 sonic_encoder_select="golomb rangecoder"
2416 sonic_ls_encoder_select="golomb rangecoder"
2417 sp5x_decoder_select="mjpeg_decoder"
2418 svq1_decoder_select="hpeldsp"
2419 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2420 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2421 svq3_decoder_suggest="zlib"
2422 tak_decoder_select="audiodsp"
2423 tdsc_decoder_select="zlib mjpeg_decoder"
2424 theora_decoder_select="vp3_decoder"
2425 thp_decoder_select="mjpeg_decoder"
2426 tiff_decoder_suggest="zlib lzma"
2427 tiff_encoder_suggest="zlib"
2428 truehd_decoder_select="mlp_parser"
2429 truemotion2_decoder_select="bswapdsp"
2430 truespeech_decoder_select="bswapdsp"
2431 tscc_decoder_select="zlib"
2432 twinvq_decoder_select="mdct lsp sinewin"
2433 txd_decoder_select="texturedsp"
2434 utvideo_decoder_select="bswapdsp"
2435 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2436 vble_decoder_select="huffyuvdsp"
2437 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2438 vc1_qsv_decoder_deps="libmfx"
2439 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2440 vc1image_decoder_select="vc1_decoder"
2441 vorbis_decoder_select="mdct"
2442 vorbis_encoder_select="mdct"
2443 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2444 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2445 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2446 vp6a_decoder_select="vp6_decoder"
2447 vp6f_decoder_select="vp6_decoder"
2448 vp7_decoder_select="h264pred videodsp vp8dsp"
2449 vp8_decoder_select="h264pred videodsp vp8dsp"
2450 vp9_decoder_select="videodsp vp9_parser"
2451 webp_decoder_select="vp8_decoder exif"
2452 wmalossless_decoder_select="llauddsp"
2453 wmapro_decoder_select="mdct sinewin wma_freqs"
2454 wmav1_decoder_select="mdct sinewin wma_freqs"
2455 wmav1_encoder_select="mdct sinewin wma_freqs"
2456 wmav2_decoder_select="mdct sinewin wma_freqs"
2457 wmav2_encoder_select="mdct sinewin wma_freqs"
2458 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2459 wmv1_decoder_select="h263_decoder"
2460 wmv1_encoder_select="h263_encoder"
2461 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2462 wmv2_encoder_select="h263_encoder wmv2dsp"
2463 wmv3_decoder_select="vc1_decoder"
2464 wmv3image_decoder_select="wmv3_decoder"
2465 xma1_decoder_select="wmapro_decoder"
2466 xma2_decoder_select="wmapro_decoder"
2467 zerocodec_decoder_select="zlib"
2468 zlib_decoder_select="zlib"
2469 zlib_encoder_select="zlib"
2470 zmbv_decoder_select="zlib"
2471 zmbv_encoder_select="zlib"
2472
2473 # hardware accelerators
2474 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2475 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2476 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2477 vaapi_deps="va_va_h"
2478 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2479 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2480 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2481 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2482 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2483 xvmc_deps="X11_extensions_XvMClib_h"
2484
2485 h263_vaapi_hwaccel_deps="vaapi"
2486 h263_vaapi_hwaccel_select="h263_decoder"
2487 h263_videotoolbox_hwaccel_deps="videotoolbox"
2488 h263_videotoolbox_hwaccel_select="h263_decoder"
2489 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2490 h264_d3d11va_hwaccel_deps="d3d11va"
2491 h264_d3d11va_hwaccel_select="h264_decoder"
2492 h264_dxva2_hwaccel_deps="dxva2"
2493 h264_dxva2_hwaccel_select="h264_decoder"
2494 h264_mmal_decoder_deps="mmal"
2495 h264_mmal_decoder_select="mmal"
2496 h264_mmal_hwaccel_deps="mmal"
2497 h264_qsv_hwaccel_deps="libmfx"
2498 h264_vaapi_hwaccel_deps="vaapi"
2499 h264_vaapi_hwaccel_select="h264_decoder"
2500 h264_vda_decoder_deps="vda"
2501 h264_vda_decoder_select="h264_decoder"
2502 h264_vda_hwaccel_deps="vda"
2503 h264_vda_hwaccel_select="h264_decoder"
2504 h264_vda_old_hwaccel_deps="vda"
2505 h264_vda_old_hwaccel_select="h264_decoder"
2506 h264_vdpau_decoder_deps="vdpau"
2507 h264_vdpau_decoder_select="h264_decoder"
2508 h264_vdpau_hwaccel_deps="vdpau"
2509 h264_vdpau_hwaccel_select="h264_decoder"
2510 h264_videotoolbox_hwaccel_deps="videotoolbox"
2511 h264_videotoolbox_hwaccel_select="h264_decoder"
2512 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2513 hevc_d3d11va_hwaccel_select="hevc_decoder"
2514 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2515 hevc_dxva2_hwaccel_select="hevc_decoder"
2516 hevc_qsv_hwaccel_deps="libmfx"
2517 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2518 hevc_vaapi_hwaccel_select="hevc_decoder"
2519 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2520 hevc_vdpau_hwaccel_select="hevc_decoder"
2521 mpeg_vdpau_decoder_deps="vdpau"
2522 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2523 mpeg_xvmc_hwaccel_deps="xvmc"
2524 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2525 mpeg1_vdpau_decoder_deps="vdpau"
2526 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2527 mpeg1_vdpau_hwaccel_deps="vdpau"
2528 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2529 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2530 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2531 mpeg1_xvmc_hwaccel_deps="xvmc"
2532 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2533 mpeg2_crystalhd_decoder_select="crystalhd"
2534 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2535 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2536 mpeg2_dxva2_hwaccel_deps="dxva2"
2537 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2538 mpeg2_mmal_decoder_deps="mmal"
2539 mpeg2_mmal_decoder_select="mmal"
2540 mpeg2_mmal_hwaccel_deps="mmal"
2541 mpeg2_qsv_hwaccel_deps="libmfx"
2542 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2543 mpeg2_vaapi_hwaccel_deps="vaapi"
2544 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2545 mpeg2_vdpau_hwaccel_deps="vdpau"
2546 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2547 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2548 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2549 mpeg2_xvmc_hwaccel_deps="xvmc"
2550 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2551 mpeg4_crystalhd_decoder_select="crystalhd"
2552 mpeg4_mmal_decoder_deps="mmal"
2553 mpeg4_mmal_decoder_select="mmal"
2554 mpeg4_mmal_hwaccel_deps="mmal"
2555 mpeg4_vaapi_hwaccel_deps="vaapi"
2556 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2557 mpeg4_vdpau_decoder_deps="vdpau"
2558 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2559 mpeg4_vdpau_hwaccel_deps="vdpau"
2560 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2561 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2562 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2563 msmpeg4_crystalhd_decoder_select="crystalhd"
2564 vc1_crystalhd_decoder_select="crystalhd"
2565 vc1_d3d11va_hwaccel_deps="d3d11va"
2566 vc1_d3d11va_hwaccel_select="vc1_decoder"
2567 vc1_dxva2_hwaccel_deps="dxva2"
2568 vc1_dxva2_hwaccel_select="vc1_decoder"
2569 vc1_mmal_decoder_deps="mmal"
2570 vc1_mmal_decoder_select="mmal"
2571 vc1_mmal_hwaccel_deps="mmal"
2572 vc1_qsv_hwaccel_deps="libmfx"
2573 vc1_qsv_hwaccel_select="qsvdec_vc1"
2574 vc1_vaapi_hwaccel_deps="vaapi"
2575 vc1_vaapi_hwaccel_select="vc1_decoder"
2576 vc1_vdpau_decoder_deps="vdpau"
2577 vc1_vdpau_decoder_select="vc1_decoder"
2578 vc1_vdpau_hwaccel_deps="vdpau"
2579 vc1_vdpau_hwaccel_select="vc1_decoder"
2580 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2581 vp9_d3d11va_hwaccel_select="vp9_decoder"
2582 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2583 vp9_dxva2_hwaccel_select="vp9_decoder"
2584 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2585 vp9_vaapi_hwaccel_select="vp9_decoder"
2586 wmv3_crystalhd_decoder_select="crystalhd"
2587 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2588 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2589 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2590 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2591 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2592
2593 # parsers
2594 h264_parser_select="h264_decoder"
2595 hevc_parser_select="golomb"
2596 mpegvideo_parser_select="mpegvideo"
2597 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2598 vc1_parser_select="mpegvideo startcode vc1_decoder"
2599
2600 # bitstream_filters
2601 mjpeg2jpeg_bsf_select="jpegtables"
2602
2603 # external libraries
2604 chromaprint_muxer_deps="chromaprint"
2605 libcelt_decoder_deps="libcelt"
2606 libdcadec_decoder_deps="libdcadec"
2607 libfaac_encoder_deps="libfaac"
2608 libfaac_encoder_select="audio_frame_queue"
2609 libfdk_aac_decoder_deps="libfdk_aac"
2610 libfdk_aac_encoder_deps="libfdk_aac"
2611 libfdk_aac_encoder_select="audio_frame_queue"
2612 libgme_demuxer_deps="libgme"
2613 libgsm_decoder_deps="libgsm"
2614 libgsm_encoder_deps="libgsm"
2615 libgsm_ms_decoder_deps="libgsm"
2616 libgsm_ms_encoder_deps="libgsm"
2617 libilbc_decoder_deps="libilbc"
2618 libilbc_encoder_deps="libilbc"
2619 libkvazaar_encoder_deps="libkvazaar"
2620 libmodplug_demuxer_deps="libmodplug"
2621 libmp3lame_encoder_deps="libmp3lame"
2622 libmp3lame_encoder_select="audio_frame_queue"
2623 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2624 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2625 libopencore_amrnb_encoder_select="audio_frame_queue"
2626 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2627 libopenh264_encoder_deps="libopenh264"
2628 libopenjpeg_decoder_deps="libopenjpeg"
2629 libopenjpeg_encoder_deps="libopenjpeg"
2630 libopus_decoder_deps="libopus"
2631 libopus_encoder_deps="libopus"
2632 libopus_encoder_select="audio_frame_queue"
2633 libschroedinger_decoder_deps="libschroedinger"
2634 libschroedinger_encoder_deps="libschroedinger"
2635 libshine_encoder_deps="libshine"
2636 libshine_encoder_select="audio_frame_queue"
2637 libspeex_decoder_deps="libspeex"
2638 libspeex_encoder_deps="libspeex"
2639 libspeex_encoder_select="audio_frame_queue"
2640 libtheora_encoder_deps="libtheora"
2641 libtwolame_encoder_deps="libtwolame"
2642 libutvideo_decoder_deps="libutvideo"
2643 libutvideo_encoder_deps="libutvideo"
2644 libvo_aacenc_encoder_deps="libvo_aacenc"
2645 libvo_aacenc_encoder_select="audio_frame_queue"
2646 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2647 libvorbis_decoder_deps="libvorbis"
2648 libvorbis_encoder_deps="libvorbis"
2649 libvorbis_encoder_select="audio_frame_queue"
2650 libvpx_vp8_decoder_deps="libvpx"
2651 libvpx_vp8_encoder_deps="libvpx"
2652 libvpx_vp9_decoder_deps="libvpx"
2653 libvpx_vp9_encoder_deps="libvpx"
2654 libwavpack_encoder_deps="libwavpack"
2655 libwebp_encoder_deps="libwebp"
2656 libwebp_anim_encoder_deps="libwebp"
2657 libx262_encoder_deps="libx262"
2658 libx264_encoder_deps="libx264"
2659 libx264rgb_encoder_deps="libx264"
2660 libx264rgb_encoder_select="libx264_encoder"
2661 libx265_encoder_deps="libx265"
2662 libxavs_encoder_deps="libxavs"
2663 libxvid_encoder_deps="libxvid"
2664 libzvbi_teletext_decoder_deps="libzvbi"
2665 nvenc_encoder_deps="nvenc"
2666 nvenc_h264_encoder_deps="nvenc"
2667 nvenc_hevc_encoder_deps="nvenc"
2668
2669 # demuxers / muxers
2670 ac3_demuxer_select="ac3_parser"
2671 asf_demuxer_select="riffdec"
2672 asf_o_demuxer_select="riffdec"
2673 asf_muxer_select="riffenc"
2674 asf_stream_muxer_select="asf_muxer"
2675 avi_demuxer_select="riffdec exif"
2676 avi_muxer_select="riffenc"
2677 avisynth_demuxer_deps="avisynth"
2678 avisynth_demuxer_select="riffdec"
2679 caf_demuxer_select="riffdec"
2680 dash_muxer_select="mp4_muxer"
2681 dirac_demuxer_select="dirac_parser"
2682 dts_demuxer_select="dca_parser"
2683 dtshd_demuxer_select="dca_parser"
2684 dv_demuxer_select="dvprofile"
2685 dv_muxer_select="dvprofile"
2686 dxa_demuxer_select="riffdec"
2687 eac3_demuxer_select="ac3_parser"
2688 f4v_muxer_select="mov_muxer"
2689 flac_demuxer_select="flac_parser"
2690 hds_muxer_select="flv_muxer"
2691 hls_muxer_select="mpegts_muxer"
2692 image2_alias_pix_demuxer_select="image2_demuxer"
2693 image2_brender_pix_demuxer_select="image2_demuxer"
2694 ipod_muxer_select="mov_muxer"
2695 ismv_muxer_select="mov_muxer"
2696 libnut_demuxer_deps="libnut"
2697 libnut_muxer_deps="libnut"
2698 matroska_audio_muxer_select="matroska_muxer"
2699 matroska_demuxer_select="riffdec"
2700 matroska_demuxer_suggest="bzlib lzo zlib"
2701 matroska_muxer_select="riffenc"
2702 mmf_muxer_select="riffenc"
2703 mov_demuxer_select="riffdec"
2704 mov_demuxer_suggest="zlib"
2705 mov_muxer_select="riffenc rtpenc_chain"
2706 mp3_demuxer_select="mpegaudio_parser"
2707 mp4_muxer_select="mov_muxer"
2708 mpegts_muxer_select="adts_muxer latm_muxer"
2709 mpegtsraw_demuxer_select="mpegts_demuxer"
2710 mxf_d10_muxer_select="mxf_muxer"
2711 mxf_opatom_muxer_select="mxf_muxer"
2712 nut_muxer_select="riffenc"
2713 nuv_demuxer_select="riffdec"
2714 oga_muxer_select="ogg_muxer"
2715 ogg_demuxer_select="dirac_parse"
2716 opus_muxer_select="ogg_muxer"
2717 psp_muxer_select="mov_muxer"
2718 rtp_demuxer_select="sdp_demuxer"
2719 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2720 rtsp_demuxer_select="http_protocol rtpdec"
2721 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2722 sap_demuxer_select="sdp_demuxer"
2723 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2724 sdp_demuxer_select="rtpdec"
2725 smoothstreaming_muxer_select="ismv_muxer"
2726 spdif_muxer_select="aac_parser"
2727 spx_muxer_select="ogg_muxer"
2728 swf_demuxer_suggest="zlib"
2729 tak_demuxer_select="tak_parser"
2730 tg2_muxer_select="mov_muxer"
2731 tgp_muxer_select="mov_muxer"
2732 vobsub_demuxer_select="mpegps_demuxer"
2733 w64_demuxer_select="wav_demuxer"
2734 w64_muxer_select="wav_muxer"
2735 wav_demuxer_select="riffdec"
2736 wav_muxer_select="riffenc"
2737 webm_muxer_select="riffenc"
2738 wtv_demuxer_select="riffdec"
2739 wtv_muxer_select="riffenc"
2740 xmv_demuxer_select="riffdec"
2741 xwma_demuxer_select="riffdec"
2742
2743 # indevs / outdevs
2744 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2745 alsa_outdev_deps="alsa_asoundlib_h"
2746 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2747 avfoundation_indev_select="avfoundation"
2748 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2749 caca_outdev_deps="libcaca"
2750 decklink_indev_deps="decklink pthreads"
2751 decklink_indev_extralibs="-lstdc++"
2752 decklink_outdev_deps="decklink pthreads"
2753 decklink_outdev_extralibs="-lstdc++"
2754 dshow_indev_deps="IBaseFilter"
2755 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2756 dv1394_indev_deps="dv1394"
2757 dv1394_indev_select="dv_demuxer"
2758 fbdev_indev_deps="linux_fb_h"
2759 fbdev_outdev_deps="linux_fb_h"
2760 gdigrab_indev_deps="CreateDIBSection"
2761 gdigrab_indev_extralibs="-lgdi32"
2762 gdigrab_indev_select="bmp_decoder"
2763 iec61883_indev_deps="libiec61883"
2764 jack_indev_deps="jack_jack_h sem_timedwait"
2765 lavfi_indev_deps="avfilter"
2766 libcdio_indev_deps="libcdio"
2767 libdc1394_indev_deps="libdc1394"
2768 libv4l2_indev_deps="libv4l2"
2769 openal_indev_deps="openal"
2770 opengl_outdev_deps="opengl"
2771 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2772 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2773 pulse_indev_deps="libpulse"
2774 pulse_outdev_deps="libpulse"
2775 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2776 qtkit_indev_select="qtkit"
2777 sdl_outdev_deps="sdl"
2778 sndio_indev_deps="sndio_h"
2779 sndio_outdev_deps="sndio_h"
2780 v4l_indev_deps="linux_videodev_h"
2781 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2782 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2783 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2784 vfwcap_indev_extralibs="-lavicap32"
2785 x11grab_indev_deps="x11grab"
2786 x11grab_xcb_indev_deps="libxcb"
2787 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2788 xv_outdev_extralibs="-lXv -lX11 -lXext"
2789
2790 # protocols
2791 async_protocol_deps="threads"
2792 bluray_protocol_deps="libbluray"
2793 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2794 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2795 ffrtmpcrypt_protocol_select="tcp_protocol"
2796 ffrtmphttp_protocol_deps="!librtmp_protocol"
2797 ffrtmphttp_protocol_select="http_protocol"
2798 ftp_protocol_select="tcp_protocol"
2799 gopher_protocol_select="network"
2800 http_protocol_select="tcp_protocol"
2801 httpproxy_protocol_select="tcp_protocol"
2802 https_protocol_select="tls_protocol"
2803 icecast_protocol_select="http_protocol"
2804 librtmp_protocol_deps="librtmp"
2805 librtmpe_protocol_deps="librtmp"
2806 librtmps_protocol_deps="librtmp"
2807 librtmpt_protocol_deps="librtmp"
2808 librtmpte_protocol_deps="librtmp"
2809 libsmbclient_protocol_deps="libsmbclient gplv3"
2810 libssh_protocol_deps="libssh"
2811 mmsh_protocol_select="http_protocol"
2812 mmst_protocol_select="network"
2813 rtmp_protocol_deps="!librtmp_protocol"
2814 rtmp_protocol_select="tcp_protocol"
2815 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2816 rtmps_protocol_deps="!librtmp_protocol"
2817 rtmps_protocol_select="tls_protocol"
2818 rtmpt_protocol_select="ffrtmphttp_protocol"
2819 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2820 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2821 rtp_protocol_select="udp_protocol"
2822 sctp_protocol_deps="struct_sctp_event_subscribe"
2823 sctp_protocol_select="network"
2824 srtp_protocol_select="rtp_protocol"
2825 tcp_protocol_select="network"
2826 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2827 tls_gnutls_protocol_select="tcp_protocol"
2828 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2829 tls_openssl_protocol_select="tcp_protocol"
2830 tls_schannel_protocol_deps="schannel"
2831 tls_schannel_protocol_select="tcp_protocol"
2832 tls_securetransport_protocol_deps="securetransport"
2833 tls_securetransport_protocol_select="tcp_protocol"
2834 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2835 udp_protocol_select="network"
2836 udplite_protocol_select="network"
2837 unix_protocol_deps="sys_un_h"
2838 unix_protocol_select="network"
2839
2840 # filters
2841 afftfilt_filter_deps="avcodec"
2842 afftfilt_filter_select="fft"
2843 amovie_filter_deps="avcodec avformat"
2844 aresample_filter_deps="swresample"
2845 ass_filter_deps="libass"
2846 asyncts_filter_deps="avresample"
2847 atempo_filter_deps="avcodec"
2848 atempo_filter_select="rdft"
2849 azmq_filter_deps="libzmq"
2850 blackframe_filter_deps="gpl"
2851 boxblur_filter_deps="gpl"
2852 bs2b_filter_deps="libbs2b"
2853 colormatrix_filter_deps="gpl"
2854 cover_rect_filter_deps="avcodec avformat gpl"
2855 cropdetect_filter_deps="gpl"
2856 delogo_filter_deps="gpl"
2857 deshake_filter_select="pixelutils"
2858 drawtext_filter_deps="libfreetype"
2859 ebur128_filter_deps="gpl"
2860 eq_filter_deps="gpl"
2861 fftfilt_filter_deps="avcodec"
2862 fftfilt_filter_select="rdft"
2863 find_rect_filter_deps="avcodec avformat gpl"
2864 flite_filter_deps="libflite"
2865 frei0r_filter_deps="frei0r dlopen"
2866 frei0r_src_filter_deps="frei0r dlopen"
2867 fspp_filter_deps="gpl"
2868 geq_filter_deps="gpl"
2869 histeq_filter_deps="gpl"
2870 hqdn3d_filter_deps="gpl"
2871 interlace_filter_deps="gpl"
2872 kerndeint_filter_deps="gpl"
2873 ladspa_filter_deps="ladspa dlopen"
2874 mcdeint_filter_deps="avcodec gpl"
2875 movie_filter_deps="avcodec avformat"
2876 mpdecimate_filter_deps="gpl"
2877 mpdecimate_filter_select="pixelutils"
2878 mptestsrc_filter_deps="gpl"
2879 negate_filter_deps="lut_filter"
2880 ocr_filter_deps="libtesseract"
2881 ocv_filter_deps="libopencv"
2882 owdenoise_filter_deps="gpl"
2883 pan_filter_deps="swresample"
2884 perspective_filter_deps="gpl"
2885 phase_filter_deps="gpl"
2886 pp7_filter_deps="gpl"
2887 pp_filter_deps="gpl postproc"
2888 pullup_filter_deps="gpl"
2889 removelogo_filter_deps="avcodec avformat swscale"
2890 repeatfields_filter_deps="gpl"
2891 resample_filter_deps="avresample"
2892 rubberband_filter_deps="librubberband"
2893 sab_filter_deps="gpl swscale"
2894 scale2ref_filter_deps="swscale"
2895 scale_filter_deps="swscale"
2896 select_filter_select="pixelutils"
2897 showcqt_filter_deps="avcodec avformat swscale"
2898 showcqt_filter_select="fft"
2899 showfreqs_filter_deps="avcodec"
2900 showfreqs_filter_select="fft"
2901 showspectrum_filter_deps="avcodec"
2902 showspectrum_filter_select="fft"
2903 showspectrumpic_filter_deps="avcodec"
2904 showspectrumpic_filter_select="fft"
2905 smartblur_filter_deps="gpl swscale"
2906 sofalizer_filter_deps="netcdf avcodec"
2907 sofalizer_filter_select="fft"
2908 spectrumsynth_filter_deps="avcodec"
2909 spectrumsynth_filter_select="fft"
2910 spp_filter_deps="gpl avcodec"
2911 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2912 stereo3d_filter_deps="gpl"
2913 subtitles_filter_deps="avformat avcodec libass"
2914 super2xsai_filter_deps="gpl"
2915 pixfmts_super2xsai_test_deps="super2xsai_filter"
2916 tinterlace_filter_deps="gpl"
2917 tinterlace_merge_test_deps="tinterlace_filter"
2918 tinterlace_pad_test_deps="tinterlace_filter"
2919 uspp_filter_deps="gpl avcodec"
2920 vidstabdetect_filter_deps="libvidstab"
2921 vidstabtransform_filter_deps="libvidstab"
2922 zmq_filter_deps="libzmq"
2923 zoompan_filter_deps="swscale"
2924 zscale_filter_deps="libzimg"
2925
2926 # examples
2927 avcodec_example_deps="avcodec avutil"
2928 avio_dir_cmd="avformat avutil"
2929 avio_reading="avformat avcodec avutil"
2930 decoding_encoding_example_deps="avcodec avformat avutil"
2931 demuxing_decoding_example_deps="avcodec avformat avutil"
2932 extract_mvs_example_deps="avcodec avformat avutil"
2933 filter_audio_example_deps="avfilter avutil"
2934 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2935 filtering_video_example_deps="avfilter avcodec avformat avutil"
2936 metadata_example_deps="avformat avutil"
2937 muxing_example_deps="avcodec avformat avutil swscale"
2938 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2939 remuxing_example_deps="avcodec avformat avutil"
2940 resampling_audio_example_deps="avutil swresample"
2941 scaling_video_example_deps="avutil swscale"
2942 transcode_aac_example_deps="avcodec avformat swresample"
2943 transcoding_example_deps="avfilter avcodec avformat avutil"
2944
2945 # libraries, in linking order
2946 avcodec_deps="avutil"
2947 avdevice_deps="avformat avcodec avutil"
2948 avfilter_deps="avutil"
2949 avformat_deps="avcodec avutil"
2950 avresample_deps="avutil"
2951 postproc_deps="avutil gpl"
2952 swresample_deps="avutil"
2953 swscale_deps="avutil"
2954
2955 # programs
2956 ffmpeg_deps="avcodec avfilter avformat swresample"
2957 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2958                null_filter
2959                setpts_filter trim_filter"
2960 ffplay_deps="avcodec avformat swscale swresample sdl"
2961 ffplay_libs='$sdl_libs'
2962 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2963 ffprobe_deps="avcodec avformat"
2964 ffserver_deps="avformat fork sarestart"
2965 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2966
2967 # documentation
2968 podpages_deps="perl"
2969 manpages_deps="perl pod2man"
2970 htmlpages_deps="perl"
2971 htmlpages_deps_any="makeinfo_html texi2html"
2972 txtpages_deps="perl makeinfo"
2973 doc_deps_any="manpages htmlpages podpages txtpages"
2974
2975 # default parameters
2976
2977 logfile="config.log"
2978
2979 # installation paths
2980 prefix_default="/usr/local"
2981 bindir_default='${prefix}/bin'
2982 datadir_default='${prefix}/share/ffmpeg'
2983 docdir_default='${prefix}/share/doc/ffmpeg'
2984 incdir_default='${prefix}/include'
2985 libdir_default='${prefix}/lib'
2986 mandir_default='${prefix}/share/man'
2987
2988 # toolchain
2989 ar_default="ar"
2990 cc_default="gcc"
2991 cxx_default="g++"
2992 host_cc_default="gcc"
2993 cp_f="cp -f"
2994 doxygen_default="doxygen"
2995 install="install"
2996 ln_s="ln -s -f"
2997 nm_default="nm -g"
2998 objformat="elf"
2999 pkg_config_default=pkg-config
3000 ranlib_default="ranlib"
3001 strip_default="strip"
3002 yasmexe_default="yasm"
3003 windres_default="windres"
3004
3005 # OS
3006 target_os_default=$(tolower $(uname -s))
3007 host_os=$target_os_default
3008
3009 # machine
3010 if test "$target_os_default" = aix; then
3011     arch_default=$(uname -p)
3012     strip_default="strip -X32_64"
3013 else
3014     arch_default=$(uname -m)
3015 fi
3016 cpu="generic"
3017 intrinsics="none"
3018
3019 # configurable options
3020 enable $PROGRAM_LIST
3021 enable $DOCUMENT_LIST
3022 enable $EXAMPLE_LIST
3023 enable $(filter_out avresample $LIBRARY_LIST)
3024 enable stripping
3025
3026 enable asm
3027 enable debug
3028 enable doc
3029 enable faan faandct faanidct
3030 enable optimizations
3031 enable runtime_cpudetect
3032 enable safe_bitstream_reader
3033 enable static
3034 enable swscale_alpha
3035 enable valgrind_backtrace
3036
3037 sws_max_filter_size_default=256
3038 set_default sws_max_filter_size
3039
3040 # Enable hwaccels by default.
3041 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3042 enable xlib
3043
3044 # build settings
3045 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3046 LIBPREF="lib"
3047 LIBSUF=".a"
3048 FULLNAME='$(NAME)$(BUILDSUF)'
3049 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3050 SLIBPREF="lib"
3051 SLIBSUF=".so"
3052 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3053 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3054 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3055 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3056 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3057 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3058
3059 asflags_filter=echo
3060 cflags_filter=echo
3061 ldflags_filter=echo
3062
3063 AS_C='-c'
3064 AS_O='-o $@'
3065 CC_C='-c'
3066 CC_E='-E -o $@'
3067 CC_O='-o $@'
3068 CXX_C='-c'
3069 CXX_O='-o $@'
3070 OBJCC_C='-c'
3071 OBJCC_E='-E -o $@'
3072 OBJCC_O='-o $@'
3073 LD_O='-o $@'
3074 LD_LIB='-l%'
3075 LD_PATH='-L'
3076 HOSTCC_C='-c'
3077 HOSTCC_E='-E -o $@'
3078 HOSTCC_O='-o $@'
3079 HOSTLD_O='-o $@'
3080
3081 host_libs='-lm'
3082 host_cflags_filter=echo
3083 host_ldflags_filter=echo
3084
3085 target_path='$(CURDIR)'
3086
3087 # since the object filename is not given with the -MM flag, the compiler
3088 # is only able to print the basename, and we must add the path ourselves
3089 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3090 DEPFLAGS='-MM'
3091
3092 # find source path
3093 if test -f configure; then
3094     source_path=.
3095 else
3096     source_path=$(cd $(dirname "$0"); pwd)
3097     case "$source_path" in
3098         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3099     esac
3100     test -e "$source_path/config.h" &&
3101         die "Out of tree builds are impossible with config.h in source dir."
3102 fi
3103
3104 for v in "$@"; do
3105     r=${v#*=}
3106     l=${v%"$r"}
3107     r=$(sh_quote "$r")
3108     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3109 done
3110
3111 find_things(){
3112     thing=$1
3113     pattern=$2
3114     file=$source_path/$3
3115     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3116 }
3117
3118 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3119 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3120 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3121 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3122 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3123 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3124 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3125 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3126 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3127 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3128 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3129
3130 ALL_COMPONENTS="
3131     $BSF_LIST
3132     $DECODER_LIST
3133     $DEMUXER_LIST
3134     $ENCODER_LIST
3135     $FILTER_LIST
3136     $HWACCEL_LIST
3137     $INDEV_LIST
3138     $MUXER_LIST
3139     $OUTDEV_LIST
3140     $PARSER_LIST
3141     $PROTOCOL_LIST
3142 "
3143
3144 for n in $COMPONENT_LIST; do
3145     v=$(toupper ${n%s})_LIST
3146     eval enable \$$v
3147     eval ${n}_if_any="\$$v"
3148 done
3149
3150 enable $ARCH_EXT_LIST
3151
3152 die_unknown(){
3153     echo "Unknown option \"$1\"."
3154     echo "See $0 --help for available options."
3155     exit 1
3156 }
3157
3158 print_in_columns() {
3159     cols=$(expr $ncols / 24)
3160     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3161 }
3162
3163 show_list() {
3164     suffix=_$1
3165     shift
3166     echo $* | sed s/$suffix//g | print_in_columns
3167     exit 0
3168 }
3169
3170 rand_list(){
3171     IFS=', '
3172     set -- $*
3173     unset IFS
3174     for thing; do
3175         comp=${thing%:*}
3176         prob=${thing#$comp}
3177         prob=${prob#:}
3178         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3179         echo "prob ${prob:-0.5}"
3180         printf '%s\n' $comp
3181     done
3182 }
3183
3184 do_random(){
3185     action=$1
3186     shift
3187     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3188     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3189 }
3190
3191 for opt do
3192     optval="${opt#*=}"
3193     case "$opt" in
3194         --extra-ldflags=*)
3195             add_ldflags $optval
3196         ;;
3197         --extra-ldexeflags=*)
3198             add_ldexeflags $optval
3199         ;;
3200         --extra-ldlibflags=*)
3201             add_ldlibflags $optval
3202         ;;
3203         --extra-libs=*)
3204             add_extralibs $optval
3205         ;;
3206         --disable-devices)
3207             disable $INDEV_LIST $OUTDEV_LIST
3208         ;;
3209         --enable-debug=*)
3210             debuglevel="$optval"
3211         ;;
3212         --disable-programs)
3213             disable $PROGRAM_LIST
3214         ;;
3215         --disable-everything)
3216             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3217         ;;
3218         --disable-all)
3219             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3220             disable $LIBRARY_LIST $PROGRAM_LIST doc
3221             enable avutil
3222         ;;
3223         --enable-random|--disable-random)
3224             action=${opt%%-random}
3225             do_random ${action#--} $COMPONENT_LIST
3226         ;;
3227         --enable-random=*|--disable-random=*)
3228             action=${opt%%-random=*}
3229             do_random ${action#--} $optval
3230         ;;
3231         --enable-*=*|--disable-*=*)
3232             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3233             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3234             eval list=\$$(toupper $thing)_LIST
3235             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3236             list=$(filter "$name" $list)
3237             [ "$list" = "" ] && warn "Option $opt did not match anything"
3238             $action $list
3239         ;;
3240         --enable-?*|--disable-?*)
3241             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3242             if is_in $option $COMPONENT_LIST; then
3243                 test $action = disable && action=unset
3244                 eval $action \$$(toupper ${option%s})_LIST
3245             elif is_in $option $CMDLINE_SELECT; then
3246                 $action $option
3247             else
3248                 die_unknown $opt
3249             fi
3250         ;;
3251         --list-*)
3252             NAME="${opt#--list-}"
3253             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3254             NAME=${NAME%s}
3255             eval show_list $NAME \$$(toupper $NAME)_LIST
3256         ;;
3257         --help|-h) show_help
3258         ;;
3259         --fatal-warnings) enable fatal_warnings
3260         ;;
3261         *)
3262             optname="${opt%%=*}"
3263             optname="${optname#--}"
3264             optname=$(echo "$optname" | sed 's/-/_/g')
3265             if is_in $optname $CMDLINE_SET; then
3266                 eval $optname='$optval'
3267             elif is_in $optname $CMDLINE_APPEND; then
3268                 append $optname "$optval"
3269             else
3270                 die_unknown $opt
3271             fi
3272         ;;
3273     esac
3274 done
3275
3276 for e in $env; do
3277     eval "export $e"
3278 done
3279
3280 disabled logging && logfile=/dev/null
3281
3282 # Disable all the library-specific components if the library itself
3283 # is disabled, see AVCODEC_LIST and following _LIST variables.
3284
3285 disable_components(){
3286     disabled ${1} && disable $(
3287         eval components="\$$(toupper ${1})_COMPONENTS"
3288         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3289     )
3290 }
3291
3292 map 'disable_components $v' $LIBRARY_LIST
3293
3294 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3295 set >> $logfile
3296
3297 test -n "$valgrind" && toolchain="valgrind-memcheck"
3298
3299 case "$toolchain" in
3300     clang-asan)
3301         cc_default="clang"
3302         add_cflags  -fsanitize=address
3303         add_ldflags -fsanitize=address
3304     ;;
3305     clang-tsan)
3306         cc_default="clang"
3307         add_cflags  -fsanitize=thread -pie
3308         add_ldflags -fsanitize=thread -pie
3309     ;;
3310     clang-usan)
3311         cc_default="clang"
3312         add_cflags  -fsanitize=undefined
3313         add_ldflags -fsanitize=undefined
3314     ;;
3315     gcc-asan)
3316         cc_default="gcc"
3317         add_cflags  -fsanitize=address
3318         add_ldflags -fsanitize=address
3319     ;;
3320     gcc-tsan)
3321         cc_default="gcc"
3322         add_cflags  -fsanitize=thread -pie -fPIC
3323         add_ldflags -fsanitize=thread -pie -fPIC
3324     ;;
3325     gcc-usan)
3326         cc_default="gcc"
3327         add_cflags  -fsanitize=undefined
3328         add_ldflags -fsanitize=undefined
3329     ;;
3330     valgrind-massif)
3331         target_exec_default=${valgrind:-"valgrind"}
3332         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"
3333     ;;
3334     valgrind-memcheck)
3335         target_exec_default=${valgrind:-"valgrind"}
3336         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3337     ;;
3338     msvc)
3339         # Check whether the current MSVC version needs the C99 converter.
3340         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3341         # support enough of C99 to build ffmpeg. Default to the new
3342         # behaviour if the regexp was unable to match anything, since this
3343         # successfully parses the version number of existing supported
3344         # versions that require the converter (MSVC 2010 and 2012).
3345         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3346         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3347             cc_default="cl"
3348         else
3349             cc_default="c99wrap cl"
3350         fi
3351         ld_default="$source_path/compat/windows/mslink"
3352         nm_default="dumpbin -symbols"
3353         ar_default="lib"
3354         case "$arch" in
3355         arm*)
3356             as_default="armasm"
3357             ;;
3358         esac
3359         target_os_default="win32"
3360         # Use a relative path for TMPDIR. This makes sure all the
3361         # ffconf temp files are written with a relative path, avoiding
3362         # issues with msys/win32 path conversion for MSVC parameters
3363         # such as -Fo<file> or -out:<file>.
3364         TMPDIR=.
3365     ;;
3366     icl)
3367         cc_default="icl"
3368         ld_default="xilink"
3369         nm_default="dumpbin -symbols"
3370         ar_default="xilib"
3371         target_os_default="win32"
3372         TMPDIR=.
3373     ;;
3374     gcov)
3375         add_cflags  -fprofile-arcs -ftest-coverage
3376         add_ldflags -fprofile-arcs -ftest-coverage
3377     ;;
3378     hardened)
3379         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3380         add_cflags   -fno-strict-overflow -fstack-protector-all
3381         add_ldflags  -Wl,-z,relro -Wl,-z,now
3382     ;;
3383     ?*)
3384         die "Unknown toolchain $toolchain"
3385     ;;
3386 esac
3387
3388 test -n "$cross_prefix" && enable cross_compile
3389
3390 if enabled cross_compile; then
3391     test -n "$arch" && test -n "$target_os" ||
3392         die "Must specify target arch and OS when cross-compiling"
3393 fi
3394
3395 ar_default="${cross_prefix}${ar_default}"
3396 cc_default="${cross_prefix}${cc_default}"
3397 cxx_default="${cross_prefix}${cxx_default}"
3398 nm_default="${cross_prefix}${nm_default}"
3399 pkg_config_default="${cross_prefix}${pkg_config_default}"
3400 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3401     ranlib_default="${cross_prefix}${ranlib_default} -D"
3402 else
3403     ranlib_default="${cross_prefix}${ranlib_default}"
3404 fi
3405 strip_default="${cross_prefix}${strip_default}"
3406 windres_default="${cross_prefix}${windres_default}"
3407
3408 sysinclude_default="${sysroot}/usr/include"
3409
3410 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3411     target_exec target_os yasmexe
3412 enabled cross_compile || host_cc_default=$cc
3413 set_default host_cc
3414
3415 pkg_config_fail_message=""
3416 if ! $pkg_config --version >/dev/null 2>&1; then
3417     warn "$pkg_config not found, library detection may fail."
3418     pkg_config=false
3419 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3420     pkg_config_fail_message="
3421 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3422 fi
3423
3424 if test $doxygen != $doxygen_default && \
3425   ! $doxygen --version >/dev/null 2>&1; then
3426     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3427 fi
3428
3429 exesuf() {
3430     case $1 in
3431         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3432     esac
3433 }
3434
3435 EXESUF=$(exesuf $target_os)
3436 HOSTEXESUF=$(exesuf $host_os)
3437
3438 # set temporary file name
3439 : ${TMPDIR:=$TEMPDIR}
3440 : ${TMPDIR:=$TMP}
3441 : ${TMPDIR:=/tmp}
3442
3443 if [ -n "$tempprefix" ] ; then
3444     mktemp(){
3445         echo $tempprefix.${HOSTNAME}.${UID}
3446     }
3447 elif ! check_cmd mktemp -u XXXXXX; then
3448     # simple replacement for missing mktemp
3449     # NOT SAFE FOR GENERAL USE
3450     mktemp(){
3451         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3452     }
3453 fi
3454
3455 tmpfile(){
3456     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3457         (set -C; exec > $tmp) 2>/dev/null ||
3458         die "Unable to create temporary file in $TMPDIR."
3459     append TMPFILES $tmp
3460     eval $1=$tmp
3461 }
3462
3463 trap 'rm -f -- $TMPFILES' EXIT
3464
3465 tmpfile TMPASM .asm
3466 tmpfile TMPC   .c
3467 tmpfile TMPCPP .cpp
3468 tmpfile TMPE   $EXESUF
3469 tmpfile TMPH   .h
3470 tmpfile TMPM   .m
3471 tmpfile TMPO   .o
3472 tmpfile TMPS   .S
3473 tmpfile TMPSH  .sh
3474 tmpfile TMPV   .ver
3475
3476 unset -f mktemp
3477
3478 chmod +x $TMPE
3479
3480 # make sure we can execute files in $TMPDIR
3481 cat > $TMPSH 2>> $logfile <<EOF
3482 #! /bin/sh
3483 EOF
3484 chmod +x $TMPSH >> $logfile 2>&1
3485 if ! $TMPSH >> $logfile 2>&1; then
3486     cat <<EOF
3487 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3488 variable to another directory and make sure that it is not mounted noexec.
3489 EOF
3490     die "Sanity test failed."
3491 fi
3492
3493 armasm_flags(){
3494     for flag; do
3495         case $flag in
3496             # Filter out MSVC cl.exe options from cflags that shouldn't
3497             # be passed to gas-preprocessor
3498             -M[TD]*)                                            ;;
3499             *)                  echo $flag                      ;;
3500         esac
3501    done
3502 }
3503
3504 ccc_flags(){
3505     for flag; do
3506         case $flag in
3507             -std=c99)           echo -c99                       ;;
3508             -mcpu=*)            echo -arch ${flag#*=}           ;;
3509             -mieee)             echo -ieee                      ;;
3510             -O*|-fast)          echo $flag                      ;;
3511             -fno-math-errno)    echo -assume nomath_errno       ;;
3512             -g)                 echo -g3                        ;;
3513             -Wall)              echo -msg_enable level2         ;;
3514             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3515             -Wl,*)              echo $flag                      ;;
3516             -f*|-W*)                                            ;;
3517             *)                  echo $flag                      ;;
3518         esac
3519    done
3520 }
3521
3522 cparser_flags(){
3523     for flag; do
3524         case $flag in
3525             -Wno-switch)             echo -Wno-switch-enum ;;
3526             -Wno-format-zero-length) ;;
3527             -Wdisabled-optimization) ;;
3528             -Wno-pointer-sign)       echo -Wno-other ;;
3529             *)                       echo $flag ;;
3530         esac
3531     done
3532 }
3533
3534 msvc_common_flags(){
3535     for flag; do
3536         case $flag in
3537             # In addition to specifying certain flags under the compiler
3538             # specific filters, they must be specified here as well or else the
3539             # generic catch all at the bottom will print the original flag.
3540             -Wall)                ;;
3541             -std=c99)             ;;
3542             # Common flags
3543             -fomit-frame-pointer) ;;
3544             -g)                   echo -Z7 ;;
3545             -fno-math-errno)      ;;
3546             -fno-common)          ;;
3547             -fno-signed-zeros)    ;;
3548             -fPIC)                ;;
3549             -mthumb)              ;;
3550             -march=*)             ;;
3551             -lz)                  echo zlib.lib ;;
3552             -lavifil32)           echo vfw32.lib ;;
3553             -lavicap32)           echo vfw32.lib user32.lib ;;
3554             -l*)                  echo ${flag#-l}.lib ;;
3555             -LARGEADDRESSAWARE)   echo $flag ;;
3556             -L*)                  echo -libpath:${flag#-L} ;;
3557             *)                    echo $flag ;;
3558         esac
3559     done
3560 }
3561
3562 msvc_flags(){
3563     msvc_common_flags "$@"
3564     for flag; do
3565         case $flag in
3566             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3567                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3568                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3569                                        -wd4307 \
3570                                        -wd4273 -wd4554 -wd4701 ;;
3571         esac
3572     done
3573 }
3574
3575 icl_flags(){
3576     msvc_common_flags "$@"
3577     for flag; do
3578         case $flag in
3579             # Despite what Intel's documentation says -Wall, which is supported
3580             # on Windows, does enable remarks so disable them here.
3581             -Wall)                echo $flag -Qdiag-disable:remark ;;
3582             -std=c99)             echo -Qstd=c99 ;;
3583             -flto)                echo -ipo ;;
3584         esac
3585     done
3586 }
3587
3588 icc_flags(){
3589     for flag; do
3590         case $flag in
3591             -flto)                echo -ipo ;;
3592             *)                    echo $flag ;;
3593         esac
3594     done
3595 }
3596
3597 pgi_flags(){
3598     for flag; do
3599         case $flag in
3600             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3601             -fomit-frame-pointer) echo -Mnoframe ;;
3602             -g)                   echo -gopt ;;
3603             *)                    echo $flag ;;
3604         esac
3605     done
3606 }
3607
3608 suncc_flags(){
3609     for flag; do
3610         case $flag in
3611             -march=*|-mcpu=*)
3612                 case "${flag#*=}" in
3613                     native)                   echo -xtarget=native       ;;
3614                     v9|niagara)               echo -xarch=sparc          ;;
3615                     ultrasparc)               echo -xarch=sparcvis       ;;
3616                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3617                     i586|pentium)             echo -xchip=pentium        ;;
3618                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3619                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3620                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3621                     pentium4*)          echo -xtarget=pentium4           ;;
3622                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3623                     *-sse3)             echo -xarch=sse3                 ;;
3624                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3625                     bonnell)                   echo -xarch=ssse3         ;;
3626                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3627                     westmere)                  echo -xtarget=westmere    ;;
3628                     silvermont)                echo -xarch=sse4_2        ;;
3629                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3630                     core-avx*|ivybridge|haswell|broadwell)
3631                                                echo -xarch=avx           ;;
3632                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3633                     btver1)                    echo -xarch=amdsse4a      ;;
3634                     btver2|bdver*)             echo -xarch=avx           ;;
3635                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3636                     k8|opteron|athlon64|athlon-fx)
3637                                                echo -xarch=sse2a         ;;
3638                     athlon*)                   echo -xarch=pentium_proa  ;;
3639                 esac
3640                 ;;
3641             -std=c99)             echo -xc99              ;;
3642             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3643             -fPIC)                echo -KPIC -xcode=pic32 ;;
3644             -W*,*)                echo $flag              ;;
3645             -f*-*|-W*|-mimpure-text)                      ;;
3646             -shared)              echo -G                 ;;
3647             *)                    echo $flag              ;;
3648         esac
3649     done
3650 }
3651
3652 tms470_flags(){
3653     for flag; do
3654         case $flag in
3655             -march=*|-mcpu=*)
3656                 case "${flag#*=}" in
3657                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3658                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3659                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3660                     armv6*|arm11*)          echo -mv=6   ;;
3661                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3662                                             echo -mv=5e  ;;
3663                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3664                 esac
3665                 ;;
3666             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3667             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3668             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3669             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3670             -msoft-float)   echo --float_support=vfplib       ;;
3671             -O[0-3]|-mf=*)  echo $flag                        ;;
3672             -g)             echo -g -mn                       ;;
3673             -pds=*)         echo $flag                        ;;
3674             -D*|-I*)        echo $flag                        ;;
3675             --gcc|--abi=*)  echo $flag                        ;;
3676             -me)            echo $flag                        ;;
3677         esac
3678     done
3679 }
3680
3681 probe_cc(){
3682     pfx=$1
3683     _cc=$2
3684     first=$3
3685
3686     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3687     unset _ld_o _ldflags _ld_lib _ld_path
3688     unset _depflags _DEPCMD _DEPFLAGS
3689     _flags_filter=echo
3690
3691     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3692         true # no-op to avoid reading stdin in following checks
3693     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3694         _type=llvm_gcc
3695         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3696         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3697         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3698         _cflags_speed='-O3'
3699         _cflags_size='-Os'
3700     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3701         _type=gcc
3702         gcc_version=$($_cc --version | head -n1)
3703         gcc_basever=$($_cc -dumpversion)
3704         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3705         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3706         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3707         case $gcc_basever in
3708             2) ;;
3709             2.*) ;;
3710             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3711         esac
3712         if [ "$first" = true ]; then
3713             case $gcc_basever in
3714                 4.2*)
3715                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3716             esac
3717         fi
3718         _cflags_speed='-O3'
3719         _cflags_size='-Os'
3720     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3721         _type=icc
3722         _ident=$($_cc --version | head -n1)
3723         _depflags='-MMD'
3724         _cflags_speed='-O3'
3725         _cflags_size='-Os'
3726         _cflags_noopt='-O1'
3727         _flags_filter=icc_flags
3728     elif $_cc -v 2>&1 | grep -q xlc; then
3729         _type=xlc
3730         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3731         _cflags_speed='-O5'
3732         _cflags_size='-O5 -qcompact'
3733     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3734         _type=ccc
3735         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3736         _DEPFLAGS='-M'
3737         _cflags_speed='-fast'
3738         _cflags_size='-O1'
3739         _flags_filter=ccc_flags
3740     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3741         test -d "$sysroot" || die "No valid sysroot specified."
3742         _type=armcc
3743         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3744         armcc_conf="$PWD/armcc.conf"
3745         $_cc --arm_linux_configure                 \
3746              --arm_linux_config_file="$armcc_conf" \
3747              --configure_sysroot="$sysroot"        \
3748              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3749              die "Error creating armcc configuration file."
3750         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3751         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3752         as_default="${cross_prefix}gcc"
3753         _depflags='-MMD'
3754         _cflags_speed='-O3'
3755         _cflags_size='-Os'
3756     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3757         _type=tms470
3758         _ident=$($_cc -version | head -n1 | tr -s ' ')
3759         _flags='--gcc --abi=eabi -me'
3760         _cc_e='-ppl -fe=$@'
3761         _cc_o='-fe=$@'
3762         _depflags='-ppa -ppd=$(@:.o=.d)'
3763         _cflags_speed='-O3 -mf=5'
3764         _cflags_size='-O3 -mf=2'
3765         _flags_filter=tms470_flags
3766     elif $_cc -v 2>&1 | grep -q clang; then
3767         _type=clang
3768         _ident=$($_cc --version 2>/dev/null | head -n1)
3769         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3770         _cflags_speed='-O3'
3771         _cflags_size='-Os'
3772     elif $_cc -V 2>&1 | grep -q Sun; then
3773         _type=suncc
3774         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3775         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3776         _DEPFLAGS='-xM1 -xc99'
3777         _ldflags='-std=c99'
3778         _cflags_speed='-O5'
3779         _cflags_size='-O5 -xspace'
3780         _flags_filter=suncc_flags
3781     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3782         _type=pathscale
3783         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3784         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3785         _cflags_speed='-O2'
3786         _cflags_size='-Os'
3787         _flags_filter='filter_out -Wdisabled-optimization'
3788     elif $_cc -v 2>&1 | grep -q Open64; then
3789         _type=open64
3790         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3791         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3792         _cflags_speed='-O2'
3793         _cflags_size='-Os'
3794         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3795     elif $_cc -V 2>&1 | grep -q Portland; then
3796         _type=pgi
3797         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3798         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3799         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3800         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3801         _cflags_noopt="-O"
3802         _flags_filter=pgi_flags
3803     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3804         _type=armasm
3805         _ident=$($_cc | head -n1)
3806         # 4509: "This form of conditional instruction is deprecated"
3807         _flags="-nologo -ignore 4509"
3808         _flags_filter=armasm_flags
3809     elif $_cc 2>&1 | grep -q Intel; then
3810         _type=icl
3811         _ident=$($_cc 2>&1 | head -n1)
3812         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3813         # Not only is O3 broken on 13.x+ but it is slower on all previous
3814         # versions (tested) as well.
3815         _cflags_speed="-O2"
3816         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3817         if $_cc 2>&1 | grep -q Linker; then
3818             _ld_o='-out:$@'
3819         else
3820             _ld_o='-Fe$@'
3821         fi
3822         _cc_o='-Fo$@'
3823         _cc_e='-P'
3824         _flags_filter=icl_flags
3825         _ld_lib='lib%.a'
3826         _ld_path='-libpath:'
3827         # -Qdiag-error to make icl error when seeing certain unknown arguments
3828         _flags='-nologo -Qdiag-error:4044,10157'
3829         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3830         # with MSVC which enables it by default.
3831         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3832         disable stripping
3833     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3834         _type=msvc
3835         _ident=$($_cc 2>&1 | head -n1)
3836         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3837         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3838         _cflags_speed="-O2"
3839         _cflags_size="-O1"
3840         if $_cc -nologo- 2>&1 | grep -q Linker; then
3841             _ld_o='-out:$@'
3842         else
3843             _ld_o='-Fe$@'
3844         fi
3845         _cc_o='-Fo$@'
3846         _cc_e='-P -Fi$@'
3847         _flags_filter=msvc_flags
3848         _ld_lib='lib%.a'
3849         _ld_path='-libpath:'
3850         _flags='-nologo'
3851         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3852         disable stripping
3853     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3854         _type=cparser
3855         _ident=$($_cc --version | head -n1)
3856         _depflags='-MMD'
3857         _cflags_speed='-O4'
3858         _cflags_size='-O2'
3859         _flags_filter=cparser_flags
3860     fi
3861
3862     eval ${pfx}_type=\$_type
3863     eval ${pfx}_ident=\$_ident
3864 }
3865
3866 set_ccvars(){
3867     eval ${1}_C=\${_cc_c-\${${1}_C}}
3868     eval ${1}_E=\${_cc_e-\${${1}_E}}
3869     eval ${1}_O=\${_cc_o-\${${1}_O}}
3870
3871     if [ -n "$_depflags" ]; then
3872         eval ${1}_DEPFLAGS=\$_depflags
3873     else
3874         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3875         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3876         eval DEP${1}FLAGS=\$_flags
3877     fi
3878 }
3879
3880 probe_cc cc "$cc" "true"
3881 cflags_filter=$_flags_filter
3882 cflags_speed=$_cflags_speed
3883 cflags_size=$_cflags_size
3884 cflags_noopt=$_cflags_noopt
3885 add_cflags $_flags $_cflags
3886 cc_ldflags=$_ldflags
3887 set_ccvars CC
3888
3889 probe_cc hostcc "$host_cc"
3890 host_cflags_filter=$_flags_filter
3891 add_host_cflags  $_flags $_cflags
3892 set_ccvars HOSTCC
3893
3894 test -n "$cc_type" && enable $cc_type ||
3895     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3896
3897 : ${as_default:=$cc}
3898 : ${objcc_default:=$cc}
3899 : ${dep_cc_default:=$cc}
3900 : ${ld_default:=$cc}
3901 : ${host_ld_default:=$host_cc}
3902 set_default ar as objcc dep_cc ld host_ld windres
3903
3904 probe_cc as "$as"
3905 asflags_filter=$_flags_filter
3906 add_asflags $_flags $_cflags
3907 set_ccvars AS
3908
3909 probe_cc objcc "$objcc"
3910 objcflags_filter=$_flags_filter
3911 add_objcflags $_flags $_cflags
3912 set_ccvars OBJC
3913
3914 probe_cc ld "$ld"
3915 ldflags_filter=$_flags_filter
3916 add_ldflags $_flags $_ldflags
3917 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3918 LD_O=${_ld_o-$LD_O}
3919 LD_LIB=${_ld_lib-$LD_LIB}
3920 LD_PATH=${_ld_path-$LD_PATH}
3921
3922 probe_cc hostld "$host_ld"
3923 host_ldflags_filter=$_flags_filter
3924 add_host_ldflags $_flags $_ldflags
3925 HOSTLD_O=${_ld_o-$HOSTLD_O}
3926
3927 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3928     probe_cc depcc "$dep_cc"
3929     CCDEP=${_DEPCMD:-$DEPCMD}
3930     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3931     DEPCCFLAGS=$_flags
3932 fi
3933
3934 if $ar 2>&1 | grep -q Microsoft; then
3935     arflags="-nologo"
3936     ar_o='-out:$@'
3937 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3938     arflags="rq"
3939     ar_o='$@'
3940 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3941     arflags='-Xany -r -c'
3942     ar_o='$@'
3943 elif $ar 2>&1 | grep -q "\[D\] "; then
3944     arflags="rcD"
3945     ar_o='$@'
3946 else
3947     arflags="rc"
3948     ar_o='$@'
3949 fi
3950
3951 add_cflags $extra_cflags
3952 add_cxxflags $extra_cxxflags
3953 add_objcflags $extra_objcflags
3954 add_asflags $extra_cflags
3955
3956 if test -n "$sysroot"; then
3957     case "$cc_type" in
3958         gcc|llvm_gcc|clang)
3959             add_cppflags --sysroot="$sysroot"
3960             add_ldflags --sysroot="$sysroot"
3961 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3962             add_cppflags -isysroot "$sysroot"
3963             add_ldflags -isysroot "$sysroot"
3964         ;;
3965         tms470)
3966             add_cppflags -I"$sysinclude"
3967             add_ldflags  --sysroot="$sysroot"
3968         ;;
3969     esac
3970 fi
3971
3972 if test "$cpu" = host; then
3973     enabled cross_compile &&
3974         die "--cpu=host makes no sense when cross-compiling."
3975
3976     case "$cc_type" in
3977         gcc|llvm_gcc)
3978             check_native(){
3979                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3980                 sed -n "/cc1.*$1=/{
3981                             s/.*$1=\\([^ ]*\\).*/\\1/
3982                             p
3983                             q
3984                         }" $TMPE
3985             }
3986             cpu=$(check_native -march || check_native -mcpu)
3987         ;;
3988         clang)
3989             check_native(){
3990                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3991                 sed -n "/cc1.*-target-cpu /{
3992                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
3993                             p
3994                             q
3995                         }" $TMPE
3996             }
3997             cpu=$(check_native -march)
3998         ;;
3999     esac
4000
4001     test "${cpu:-host}" = host &&
4002         die "--cpu=host not supported with compiler $cc"
4003 fi
4004
4005 # Deal with common $arch aliases
4006 case "$arch" in
4007     aarch64|arm64)
4008         arch="aarch64"
4009     ;;
4010     arm*|iPad*|iPhone*)
4011         arch="arm"
4012     ;;
4013     mips*|IP*)
4014         case "$arch" in
4015         *el)
4016             add_cppflags -EL
4017             add_ldflags -EL
4018         ;;
4019         *eb)
4020             add_cppflags -EB
4021             add_ldflags -EB
4022         ;;
4023         esac
4024         arch="mips"
4025     ;;
4026     parisc*|hppa*)
4027         arch="parisc"
4028     ;;
4029     "Power Macintosh"|ppc*|powerpc*)
4030         arch="ppc"
4031     ;;
4032     s390|s390x)
4033         arch="s390"
4034     ;;
4035     sh4|sh)
4036         arch="sh4"
4037     ;;
4038     sun4u|sparc*)
4039         arch="sparc"
4040     ;;
4041     tilegx|tile-gx)
4042         arch="tilegx"
4043     ;;
4044     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4045         arch="x86"
4046     ;;
4047 esac
4048
4049 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4050 enable $arch
4051
4052 # Add processor-specific flags
4053 if enabled aarch64; then
4054
4055     case $cpu in
4056         armv*)
4057             cpuflags="-march=$cpu"
4058         ;;
4059         *)
4060             cpuflags="-mcpu=$cpu"
4061         ;;
4062     esac
4063
4064 elif enabled alpha; then
4065
4066     cpuflags="-mcpu=$cpu"
4067
4068 elif enabled arm; then
4069
4070     check_arm_arch() {
4071         check_cpp_condition stddef.h \
4072             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4073             $cpuflags
4074     }
4075
4076     probe_arm_arch() {
4077         if   check_arm_arch 4;        then echo armv4;
4078         elif check_arm_arch 4T;       then echo armv4t;
4079         elif check_arm_arch 5;        then echo armv5;
4080         elif check_arm_arch 5E;       then echo armv5e;
4081         elif check_arm_arch 5T;       then echo armv5t;
4082         elif check_arm_arch 5TE;      then echo armv5te;
4083         elif check_arm_arch 5TEJ;     then echo armv5te;
4084         elif check_arm_arch 6;        then echo armv6;
4085         elif check_arm_arch 6J;       then echo armv6j;
4086         elif check_arm_arch 6K;       then echo armv6k;
4087         elif check_arm_arch 6Z;       then echo armv6z;
4088         elif check_arm_arch 6ZK;      then echo armv6zk;
4089         elif check_arm_arch 6T2;      then echo armv6t2;
4090         elif check_arm_arch 7;        then echo armv7;
4091         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4092         elif check_arm_arch 7S;       then echo armv7-a;
4093         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4094         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4095         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4096         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4097         fi
4098     }
4099
4100     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4101
4102     case $cpu in
4103         armv*)
4104             cpuflags="-march=$cpu"
4105             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4106         ;;
4107         *)
4108             cpuflags="-mcpu=$cpu"
4109             case $cpu in
4110                 cortex-a*)                               subarch=armv7a  ;;
4111                 cortex-r*)                               subarch=armv7r  ;;
4112                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4113                 arm11*)                                  subarch=armv6   ;;
4114                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4115                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4116                 *)                             subarch=$(probe_arm_arch) ;;
4117             esac
4118         ;;
4119     esac
4120
4121     case "$subarch" in
4122         armv5t*)    enable fast_clz                ;;
4123         armv[6-8]*)
4124             enable fast_clz
4125             disabled fast_unaligned || enable fast_unaligned
4126             ;;
4127     esac
4128
4129 elif enabled avr32; then
4130
4131     case $cpu in
4132         ap7[02]0[0-2])
4133             subarch="avr32_ap"
4134             cpuflags="-mpart=$cpu"
4135         ;;
4136         ap)
4137             subarch="avr32_ap"
4138             cpuflags="-march=$cpu"
4139         ;;
4140         uc3[ab]*)
4141             subarch="avr32_uc"
4142             cpuflags="-mcpu=$cpu"
4143         ;;
4144         uc)
4145             subarch="avr32_uc"
4146             cpuflags="-march=$cpu"
4147         ;;
4148     esac
4149
4150 elif enabled bfin; then
4151
4152     cpuflags="-mcpu=$cpu"
4153
4154 elif enabled mips; then
4155
4156     cpuflags="-march=$cpu"
4157
4158     case $cpu in
4159         24kc)
4160             disable mips32r6
4161             disable mips64r2
4162             disable mips64r6
4163             disable mipsfpu
4164             disable mipsdsp
4165             disable mipsdspr2
4166             disable msa
4167         ;;
4168         24kf*)
4169             disable mips32r6
4170             disable mips64r2
4171             disable mips64r6
4172             disable mipsdsp
4173             disable mipsdspr2
4174             disable msa
4175         ;;
4176         24kec|34kc|1004kc)
4177             disable mips32r6
4178             disable mips64r2
4179             disable mips64r6
4180             disable mipsfpu
4181             disable mipsdspr2
4182             disable msa
4183         ;;
4184         24kef*|34kf*|1004kf*)
4185             disable mips32r6
4186             disable mips64r2
4187             disable mips64r6
4188             disable mipsdspr2
4189             disable msa
4190         ;;
4191         74kc)
4192             disable mips32r6
4193             disable mips64r2
4194             disable mips64r6
4195             disable mipsfpu
4196             disable msa
4197         ;;
4198         74kf)
4199             disable mips32r6
4200             disable mips64r2
4201             disable mips64r6
4202             disable msa
4203         ;;
4204         p5600)
4205             disable mips32r6
4206             disable mips64r2
4207             disable mips64r6
4208             disable mipsdsp
4209             disable mipsdspr2
4210             check_cflags "-mtune=p5600" &&
4211             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4212             add_asflags "-mfp64"
4213         ;;
4214         i6400)
4215             disable mips32r2
4216             disable mips32r6
4217             disable mips64r2
4218             disable mipsdsp
4219             disable mipsdspr2
4220             check_cflags "-mtune=i6400 -mabi=64" &&
4221             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4222             check_ldflags "-mabi=64" &&
4223             add_asflags "-mfp64"
4224         ;;
4225         loongson*)
4226             disable mips32r2
4227             disable mips32r6
4228             disable mips64r2
4229             disable mips64r6
4230             disable mipsfpu
4231             disable mipsdsp
4232             disable mipsdspr2
4233             disable msa
4234             enable local_aligned_8 local_aligned_16 local_aligned_32
4235             enable simd_align_16
4236             enable fast_64bit
4237             enable fast_clz
4238             enable fast_cmov
4239             enable fast_unaligned
4240             disable aligned_stack
4241             case $cpu in
4242                 loongson3*)
4243                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4244                 ;;
4245                 loongson2e)
4246                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4247                 ;;
4248                 loongson2f)
4249                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4250                 ;;
4251             esac
4252         ;;
4253         generic)
4254             disable mips64r6
4255             disable msa
4256         ;;
4257         *)
4258             # Unknown CPU. Disable everything.
4259             warn "unknown CPU. Disabling all MIPS optimizations."
4260             disable mipsfpu
4261             disable mips32r2
4262             disable mips32r6
4263             disable mips64r2
4264             disable mips64r6
4265             disable mipsdsp
4266             disable mipsdspr2
4267             disable msa
4268         ;;
4269     esac
4270
4271 elif enabled ppc; then
4272
4273     disable ldbrx
4274
4275     case $(tolower $cpu) in
4276         601|ppc601|powerpc601)
4277             cpuflags="-mcpu=601"
4278             disable altivec
4279         ;;
4280         603*|ppc603*|powerpc603*)
4281             cpuflags="-mcpu=603"
4282             disable altivec
4283         ;;
4284         604*|ppc604*|powerpc604*)
4285             cpuflags="-mcpu=604"
4286             disable altivec
4287         ;;
4288         g3|75*|ppc75*|powerpc75*)
4289             cpuflags="-mcpu=750"
4290             disable altivec
4291         ;;
4292         g4|745*|ppc745*|powerpc745*)
4293             cpuflags="-mcpu=7450"
4294             disable vsx
4295         ;;
4296         74*|ppc74*|powerpc74*)
4297             cpuflags="-mcpu=7400"
4298             disable vsx
4299         ;;
4300         g5|970|ppc970|powerpc970)
4301             cpuflags="-mcpu=970"
4302             disable vsx
4303         ;;
4304         power[3-6]*)
4305             cpuflags="-mcpu=$cpu"
4306             disable vsx
4307         ;;
4308         power[7-8]*)
4309             cpuflags="-mcpu=$cpu"
4310         ;;
4311         cell)
4312             cpuflags="-mcpu=cell"
4313             enable ldbrx
4314             disable vsx
4315         ;;
4316         e500mc)
4317             cpuflags="-mcpu=e500mc"
4318             disable altivec
4319         ;;
4320         e500v2)
4321             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4322             disable altivec
4323             disable dcbzl
4324         ;;
4325         e500)
4326             cpuflags="-mcpu=8540 -mhard-float"
4327             disable altivec
4328             disable dcbzl
4329         ;;
4330     esac
4331
4332 elif enabled sparc; then
4333
4334     case $cpu in
4335         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4336             cpuflags="-mcpu=$cpu"
4337         ;;
4338         ultrasparc*|niagara[234])
4339             cpuflags="-mcpu=$cpu"
4340         ;;
4341     esac
4342
4343 elif enabled x86; then
4344
4345     case $cpu in
4346         i[345]86|pentium)
4347             cpuflags="-march=$cpu"
4348             disable i686
4349             disable mmx
4350         ;;
4351         # targets that do NOT support nopl and conditional mov (cmov)
4352         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4353             cpuflags="-march=$cpu"
4354             disable i686
4355         ;;
4356         # targets that do support nopl and conditional mov (cmov)
4357         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4358         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4359             cpuflags="-march=$cpu"
4360             enable i686
4361             enable fast_cmov
4362         ;;
4363         # targets that do support conditional mov but on which it's slow
4364         pentium4|pentium4m|prescott|nocona)
4365             cpuflags="-march=$cpu"
4366             enable i686
4367             disable fast_cmov
4368         ;;
4369     esac
4370
4371 fi
4372
4373 if [ "$cpu" != generic ]; then
4374     add_cflags  $cpuflags
4375     add_asflags $cpuflags
4376     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4377 fi
4378
4379 # compiler sanity check
4380 check_exec <<EOF
4381 int main(void){ return 0; }
4382 EOF
4383 if test "$?" != 0; then
4384     echo "$cc is unable to create an executable file."
4385     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4386         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4387         echo "Only do this if you know what cross compiling means."
4388     fi
4389     die "C compiler test failed."
4390 fi
4391
4392 add_cppflags -D_ISOC99_SOURCE
4393 add_cxxflags -D__STDC_CONSTANT_MACROS
4394 check_cflags -std=c99
4395 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4396 #include <stdlib.h>
4397 EOF
4398 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4399 #include <stdlib.h>
4400 EOF
4401
4402 add_host_cppflags -D_ISOC99_SOURCE
4403 check_host_cflags -std=c99
4404 check_host_cflags -Wall
4405 check_host_cflags -O3
4406
4407 check_64bit(){
4408     arch32=$1
4409     arch64=$2
4410     expr=$3
4411     check_code cc "" "int test[2*($expr) - 1]" &&
4412         subarch=$arch64 || subarch=$arch32
4413 }
4414
4415 case "$arch" in
4416     aarch64|alpha|ia64)
4417         spic=$shared
4418     ;;
4419     mips)
4420         check_64bit mips mips64 '_MIPS_SIM > 1'
4421         spic=$shared
4422     ;;
4423     parisc)
4424         check_64bit parisc parisc64 'sizeof(void *) > 4'
4425         spic=$shared
4426     ;;
4427     ppc)
4428         check_64bit ppc ppc64 'sizeof(void *) > 4'
4429         spic=$shared
4430     ;;
4431     s390)
4432         check_64bit s390 s390x 'sizeof(void *) > 4'
4433         spic=$shared
4434     ;;
4435     sparc)
4436         check_64bit sparc sparc64 'sizeof(void *) > 4'
4437         spic=$shared
4438     ;;
4439     x86)
4440         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4441         # Treat x32 as x64 for now. Note it also needs spic=$shared
4442         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4443             subarch=x86_64
4444         if test "$subarch" = "x86_64"; then
4445             spic=$shared
4446         fi
4447     ;;
4448     ppc)
4449         check_cc <<EOF && subarch="ppc64"
4450         int test[(int)sizeof(char*) - 7];
4451 EOF
4452     ;;
4453 esac
4454
4455 enable $subarch
4456 enabled spic && enable_weak pic
4457
4458 # OS specific
4459 case $target_os in
4460     aix)
4461         SHFLAGS=-shared
4462         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4463         enabled shared && add_ldflags -Wl,-brtl
4464         ;;
4465     android)
4466         disable symver
4467         enable section_data_rel_ro
4468         SLIB_INSTALL_NAME='$(SLIBNAME)'
4469         SLIB_INSTALL_LINKS=
4470         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4471         ;;
4472     haiku)
4473         prefix_default="/boot/common"
4474         network_extralibs="-lnetwork"
4475         host_libs=
4476         ;;
4477     sunos)
4478         SHFLAGS='-shared -Wl,-h,$$(@F)'
4479         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4480         network_extralibs="-lsocket -lnsl"
4481         add_cppflags -D__EXTENSIONS__
4482         # When using suncc to build, the Solaris linker will mark
4483         # an executable with each instruction set encountered by
4484         # the Solaris assembler.  As our libraries contain their own
4485         # guards for processor-specific code, instead suppress
4486         # generation of the HWCAPS ELF section on Solaris x86 only.
4487         enabled_all suncc x86 &&
4488             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4489             add_ldflags -Wl,-M,mapfile
4490         nm_default='nm -P -g'
4491         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4492         ;;
4493     netbsd)
4494         disable symver
4495         oss_indev_extralibs="-lossaudio"
4496         oss_outdev_extralibs="-lossaudio"
4497         enabled gcc || check_ldflags -Wl,-zmuldefs
4498         ;;
4499     openbsd|bitrig)
4500         disable symver
4501         SHFLAGS='-shared'
4502         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4503         SLIB_INSTALL_LINKS=
4504         oss_indev_extralibs="-lossaudio"
4505         oss_outdev_extralibs="-lossaudio"
4506         ;;
4507     dragonfly)
4508         disable symver
4509         ;;
4510     freebsd)
4511         ;;
4512     bsd/os)
4513         add_extralibs -lpoll -lgnugetopt
4514         strip="strip -d"
4515         ;;
4516     darwin)
4517         enabled ppc && add_asflags -force_cpusubtype_ALL
4518         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4519         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4520         strip="${strip} -x"
4521         add_ldflags -Wl,-dynamic,-search_paths_first
4522         SLIBSUF=".dylib"
4523         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4524         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4525         objformat="macho"
4526         enabled x86_64 && objformat="macho64"
4527         enabled_any pic shared x86_64 ||
4528             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4529         ;;
4530     msys*)
4531         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4532         ;;
4533     mingw32*|mingw64*)
4534         if test $target_os = "mingw32ce"; then
4535             disable network
4536         else
4537             target_os=mingw32
4538         fi
4539         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4540         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4541         LIBTARGET=i386
4542         if enabled x86_64; then
4543             LIBTARGET="i386:x86-64"
4544         elif enabled arm; then
4545             LIBTARGET=arm-wince
4546         fi
4547         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4548         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4549         shlibdir_default="$bindir_default"
4550         SLIBPREF=""
4551         SLIBSUF=".dll"
4552         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4553         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4554         dlltool="${cross_prefix}dlltool"
4555         if check_cmd lib.exe -list; then
4556             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4557             if enabled x86_64; then
4558                 LIBTARGET=x64
4559             fi
4560         elif check_cmd $dlltool --version; then
4561             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4562         fi
4563         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4564         SLIB_INSTALL_LINKS=
4565         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4566         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4567         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4568         objformat="win32"
4569         ranlib=:
4570         enable dos_paths
4571         check_ldflags -Wl,--nxcompat,--dynamicbase
4572         # Lets work around some stupidity in binutils.
4573         # ld will strip relocations from executables even though we need them
4574         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4575         # however ld then forgets what the entry point should be (oops) so we
4576         # have to manually (re)set it.
4577         if enabled x86_32; then
4578             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4579         elif enabled x86_64; then
4580             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4581             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4582             # Set image base >4GB for extra entropy with HEASLR
4583             add_ldexeflags -Wl,--image-base,0x140000000
4584             append SHFLAGS -Wl,--image-base,0x180000000
4585         fi
4586         ;;
4587     win32|win64)
4588         disable symver
4589         if enabled shared; then
4590             # Link to the import library instead of the normal static library
4591             # for shared libs.
4592             LD_LIB='%.lib'
4593             # Cannot build both shared and static libs with MSVC or icl.
4594             disable static
4595         fi
4596         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4597         shlibdir_default="$bindir_default"
4598         SLIBPREF=""
4599         SLIBSUF=".dll"
4600         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4601         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4602         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4603         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4604         SLIB_INSTALL_LINKS=
4605         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4606         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4607         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4608         objformat="win32"
4609         ranlib=:
4610         enable dos_paths
4611         ;;
4612     cygwin*)
4613         target_os=cygwin
4614         shlibdir_default="$bindir_default"
4615         SLIBPREF="cyg"
4616         SLIBSUF=".dll"
4617         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4618         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4619         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4620         SLIB_INSTALL_LINKS=
4621         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4622         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4623         objformat="win32"
4624         enable dos_paths
4625         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4626         ;;
4627     *-dos|freedos|opendos)
4628         network_extralibs="-lsocket"
4629         objformat="coff"
4630         enable dos_paths
4631         add_cppflags -U__STRICT_ANSI__
4632         ;;
4633     linux)
4634         enable dv1394
4635         enable section_data_rel_ro
4636         ;;
4637     irix*)
4638         target_os=irix
4639         ranlib="echo ignoring ranlib"
4640         ;;
4641     os/2*)
4642         strip="lxlite -CS"
4643         ln_s="cp -f"
4644         objformat="aout"
4645         add_cppflags -D_GNU_SOURCE
4646         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4647         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4648         LIBSUF="_s.a"
4649         SLIBPREF=""
4650         SLIBSUF=".dll"
4651         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4652         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4653         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4654             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4655             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4656             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4657             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4658         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4659             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4660         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4661         enable dos_paths
4662         enable_weak os2threads
4663         ;;
4664     gnu/kfreebsd)
4665         add_cppflags -D_BSD_SOURCE
4666         ;;
4667     gnu)
4668         ;;
4669     qnx)
4670         add_cppflags -D_QNX_SOURCE
4671         network_extralibs="-lsocket"
4672         ;;
4673     symbian)
4674         SLIBSUF=".dll"
4675         enable dos_paths
4676         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4677         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4678         add_ldflags -Wl,--target1-abs,--no-undefined \
4679                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4680                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4681         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4682                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4683                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4684         ;;
4685     osf1)
4686         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4687         ;;
4688     minix)
4689         ;;
4690     plan9)
4691         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4692                      -D_REENTRANT_SOURCE        \
4693                      -D_RESEARCH_SOURCE         \
4694                      -DFD_SETSIZE=96            \
4695                      -DHAVE_SOCK_OPTS
4696         add_compat strtod.o strtod=avpriv_strtod
4697         network_extralibs='-lbsd'
4698         exeobjs=compat/plan9/main.o
4699         disable ffserver
4700         cp_f='cp'
4701         ;;
4702     none)
4703         ;;
4704     *)
4705         die "Unknown OS '$target_os'."
4706         ;;
4707 esac
4708
4709 # test if creating links works
4710 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4711 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4712 mkdir "$link_dest"
4713 $ln_s "$link_dest" "$link_name"
4714 touch "$link_dest/test_file"
4715 if [ -e "$link_name/test_file" ]; then
4716     # create link to source path
4717     [ -e src ] && rm src
4718     $ln_s "$source_path" src
4719     source_link=src
4720 else
4721     # creating directory links doesn't work
4722     # fall back to using the full source path
4723     source_link="$source_path"
4724 fi
4725 # cleanup
4726 rm -r "$link_dest"
4727 rm -r "$link_name"
4728
4729 # determine libc flavour
4730
4731 probe_libc(){
4732     pfx=$1
4733     pfx_no_=${pfx%_}
4734     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4735     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4736         eval ${pfx}libc_type=uclibc
4737         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4738     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4739         eval ${pfx}libc_type=glibc
4740         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4741     # MinGW headers can be installed on Cygwin, so check for newlib first.
4742     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4743         eval ${pfx}libc_type=newlib
4744         add_${pfx}cppflags -U__STRICT_ANSI__
4745     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4746     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4747         eval ${pfx}libc_type=mingw64
4748         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4749             add_compat msvcrt/snprintf.o
4750             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4751         fi
4752         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4753         eval test \$${pfx_no_}cc_type = "gcc" &&
4754             add_${pfx}cppflags -D__printf__=__gnu_printf__
4755     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4756          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4757         eval ${pfx}libc_type=mingw32
4758         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4759             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4760             die "ERROR: MinGW32 runtime version must be >= 3.15."
4761         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4762         eval test \$${pfx_no_}cc_type = "gcc" &&
4763             add_${pfx}cppflags -D__printf__=__gnu_printf__
4764     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4765         eval ${pfx}libc_type=msvcrt
4766         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4767             if [ "$pfx" = host_ ]; then
4768                 add_host_cppflags -Dsnprintf=_snprintf
4769             else
4770                 add_compat strtod.o strtod=avpriv_strtod
4771                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4772                                              _snprintf=avpriv_snprintf  \
4773                                              vsnprintf=avpriv_vsnprintf
4774             fi
4775         fi
4776         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4777         # 0x601 by default unless something else is set by the user.
4778         # This can easily lead to us detecting functions only present
4779         # in such new versions and producing binaries requiring windows 7.0.
4780         # Therefore explicitly set the default to XP unless the user has
4781         # set something else on the command line.
4782         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4783         # family. For these cases, configure is free to use any functions
4784         # found in the SDK headers by default. (Alternatively, we could force
4785         # _WIN32_WINNT to 0x0602 in that case.)
4786         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4787             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4788 #ifdef WINAPI_FAMILY
4789 #include <winapifamily.h>
4790 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4791 #error not desktop
4792 #endif
4793 #endif
4794 EOF
4795     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4796         eval ${pfx}libc_type=klibc
4797     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4798         eval ${pfx}libc_type=bionic
4799     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4800         eval ${pfx}libc_type=solaris
4801         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4802     fi
4803     check_${pfx}cc <<EOF
4804 #include <time.h>
4805 void *v = localtime_r;
4806 EOF
4807 test "$?" != 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
4808 #include <time.h>
4809 void *v = localtime_r;
4810 EOF
4811
4812 }
4813
4814 probe_libc
4815 test -n "$libc_type" && enable libc_$libc_type
4816 probe_libc host_
4817 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4818
4819 case $libc_type in
4820     bionic)
4821         add_compat strtod.o strtod=avpriv_strtod
4822         ;;
4823 esac
4824
4825 # hacks for compiler/libc/os combinations
4826
4827 if enabled_all tms470 libc_glibc; then
4828     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4829     add_cppflags -D__USER_LABEL_PREFIX__=
4830     add_cppflags -D__builtin_memset=memset
4831     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4832     add_cflags   -pds=48    # incompatible redefinition of macro
4833 fi
4834
4835 if enabled_all ccc libc_glibc; then
4836     add_ldflags -Wl,-z,now  # calls to libots crash without this
4837 fi
4838
4839 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4840     add_cppflags '-I\$(SRC_PATH)/compat/float'
4841
4842 esc(){
4843     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4844 }
4845
4846 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4847
4848 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4849
4850 set_default libdir
4851 : ${shlibdir_default:="$libdir"}
4852 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4853
4854 set_default $PATHS_LIST
4855 set_default nm
4856
4857 # we need to build at least one lib type
4858 if ! enabled_any static shared; then
4859     cat <<EOF
4860 At least one library type must be built.
4861 Specify --enable-static to build the static libraries or --enable-shared to
4862 build the shared libraries as well. To only build the shared libraries specify
4863 --disable-static in addition to --enable-shared.
4864 EOF
4865     exit 1;
4866 fi
4867
4868 die_license_disabled() {
4869     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4870 }
4871
4872 die_license_disabled_gpl() {
4873     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified.&qu