Merge commit '21f7cd4acd8dc4b4796b55966dd015cb037164d8'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
91   --enable-rpath           use rpath to allow installing libraries in paths
92                            not part of the dynamic linker search path
93                            use rpath when linking programs [USE WITH CARE]
94
95 Licensing options:
96   --enable-gpl             allow use of GPL code, the resulting libs
97                            and binaries will be under GPL [no]
98   --enable-version3        upgrade (L)GPL to version 3 [no]
99   --enable-nonfree         allow use of nonfree code, the resulting libs
100                            and binaries will be unredistributable [no]
101
102 Configuration options:
103   --disable-static         do not build static libraries [no]
104   --enable-shared          build shared libraries [no]
105   --enable-small           optimize for size instead of speed
106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
107   --enable-gray            enable full grayscale support (slower color)
108   --disable-swscale-alpha  disable alpha channel support in swscale
109   --disable-all            disable building components, libraries and programs
110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
111   --enable-raise-major     increase major version numbers in sonames [no]
112
113 Program options:
114   --disable-programs       do not build command line programs
115   --disable-ffmpeg         disable ffmpeg build
116   --disable-ffplay         disable ffplay build
117   --disable-ffprobe        disable ffprobe build
118   --disable-ffserver       disable ffserver build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Hardware accelerators:
152   --disable-d3d11va        disable D3D11VA code [autodetect]
153   --disable-dxva2          disable DXVA2 code [autodetect]
154   --disable-vaapi          disable VAAPI code [autodetect]
155   --disable-vda            disable VDA code [autodetect]
156   --disable-vdpau          disable VDPAU code [autodetect]
157   --enable-videotoolbox    enable VideoToolbox code [autodetect]
158
159 Individual component options:
160   --disable-everything     disable all components listed below
161   --disable-encoder=NAME   disable encoder NAME
162   --enable-encoder=NAME    enable encoder NAME
163   --disable-encoders       disable all encoders
164   --disable-decoder=NAME   disable decoder NAME
165   --enable-decoder=NAME    enable decoder NAME
166   --disable-decoders       disable all decoders
167   --disable-hwaccel=NAME   disable hwaccel NAME
168   --enable-hwaccel=NAME    enable hwaccel NAME
169   --disable-hwaccels       disable all hwaccels
170   --disable-muxer=NAME     disable muxer NAME
171   --enable-muxer=NAME      enable muxer NAME
172   --disable-muxers         disable all muxers
173   --disable-demuxer=NAME   disable demuxer NAME
174   --enable-demuxer=NAME    enable demuxer NAME
175   --disable-demuxers       disable all demuxers
176   --enable-parser=NAME     enable parser NAME
177   --disable-parser=NAME    disable parser NAME
178   --disable-parsers        disable all parsers
179   --enable-bsf=NAME        enable bitstream filter NAME
180   --disable-bsf=NAME       disable bitstream filter NAME
181   --disable-bsfs           disable all bitstream filters
182   --enable-protocol=NAME   enable protocol NAME
183   --disable-protocol=NAME  disable protocol NAME
184   --disable-protocols      disable all protocols
185   --enable-indev=NAME      enable input device NAME
186   --disable-indev=NAME     disable input device NAME
187   --disable-indevs         disable input devices
188   --enable-outdev=NAME     enable output device NAME
189   --disable-outdev=NAME    disable output device NAME
190   --disable-outdevs        disable output devices
191   --disable-devices        disable all devices
192   --enable-filter=NAME     enable filter NAME
193   --disable-filter=NAME    disable filter NAME
194   --disable-filters        disable all filters
195
196 External library support:
197   --enable-avisynth        enable reading of AviSynth script files [no]
198   --disable-bzlib          disable bzlib [autodetect]
199   --enable-cuda            enable dynamically linked CUDA [no]
200   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
201   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
202   --enable-frei0r          enable frei0r video filtering [no]
203   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
204                            if openssl, librtmp or gmp is not used [no]
205   --enable-gmp             enable gmp, needed for rtmp(t)e support
206                            if openssl or librtmp is not used [no]
207   --enable-gnutls          enable gnutls, needed for https support
208                            if openssl is not used [no]
209   --disable-iconv          disable iconv [autodetect]
210   --enable-ladspa          enable LADSPA audio filtering [no]
211   --enable-libass          enable libass subtitles rendering,
212                            needed for subtitles and ass filter [no]
213   --enable-libbluray       enable BluRay reading using libbluray [no]
214   --enable-libbs2b         enable bs2b DSP library [no]
215   --enable-libcaca         enable textual display using libcaca [no]
216   --enable-libcelt         enable CELT decoding via libcelt [no]
217   --enable-libcdio         enable audio CD grabbing with libcdio [no]
218   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
219                            and libraw1394 [no]
220   --enable-libdcadec       enable DCA decoding via libdcadec [no]
221   --enable-libfaac         enable AAC encoding via libfaac [no]
222   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
223   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
224   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
225   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
226   --enable-libgme          enable Game Music Emu via libgme [no]
227   --enable-libgsm          enable GSM de/encoding via libgsm [no]
228   --enable-libiec61883     enable iec61883 via libiec61883 [no]
229   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
230   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
231   --enable-libmfx          enable HW acceleration through libmfx
232   --enable-libmodplug      enable ModPlug via libmodplug [no]
233   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
234   --enable-libnut          enable NUT (de)muxing via libnut,
235                            native (de)muxer exists [no]
236   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
237   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
238   --enable-libopencv       enable video filtering via libopencv [no]
239   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
240   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
241   --enable-libopus         enable Opus de/encoding via libopus [no]
242   --enable-libpulse        enable Pulseaudio input via libpulse [no]
243   --enable-librubberband   enable rubberband needed for rubberband filter [no]
244   --enable-librtmp         enable RTMP[E] support via librtmp [no]
245   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
246   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
247   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
248   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
249   --enable-libsoxr         enable Include libsoxr resampling [no]
250   --enable-libspeex        enable Speex de/encoding via libspeex [no]
251   --enable-libssh          enable SFTP protocol via libssh [no]
252   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
253   --enable-libtheora       enable Theora encoding via libtheora [no]
254   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
255   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
256   --enable-libv4l2         enable libv4l2/v4l-utils [no]
257   --enable-libvidstab      enable video stabilization using vid.stab [no]
258   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
259   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
260                            native implementation exists [no]
261   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
262   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
263   --enable-libwebp         enable WebP encoding via libwebp [no]
264   --enable-libx264         enable H.264 encoding via x264 [no]
265   --enable-libx265         enable HEVC encoding via x265 [no]
266   --enable-libxavs         enable AVS encoding via xavs [no]
267   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
268   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
269   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
270   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
271   --enable-libxvid         enable Xvid encoding via xvidcore,
272                            native MPEG-4/Xvid encoder exists [no]
273   --enable-libzimg         enable z.lib, needed for zscale filter [no]
274   --enable-libzmq          enable message passing via libzmq [no]
275   --enable-libzvbi         enable teletext support via libzvbi [no]
276   --disable-lzma           disable lzma [autodetect]
277   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
278   --enable-mmal            enable decoding via MMAL [no]
279   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
280   --enable-nvenc           enable NVIDIA NVENC support [no]
281   --enable-openal          enable OpenAL 1.1 capture support [no]
282   --enable-opencl          enable OpenCL code
283   --enable-opengl          enable OpenGL rendering [no]
284   --enable-openssl         enable openssl, needed for https support
285                            if gnutls is not used [no]
286   --disable-schannel       disable SChannel SSP, needed for TLS support on
287                            Windows if openssl and gnutls are not used [autodetect]
288   --disable-sdl            disable sdl [autodetect]
289   --disable-securetransport disable Secure Transport, needed for TLS support
290                            on OSX if openssl and gnutls are not used [autodetect]
291   --enable-x11grab         enable X11 grabbing (legacy) [no]
292   --disable-xlib           disable xlib [autodetect]
293   --disable-zlib           disable zlib [autodetect]
294
295 Toolchain options:
296   --arch=ARCH              select architecture [$arch]
297   --cpu=CPU                select the minimum required CPU (affects
298                            instruction selection, may crash on older CPUs)
299   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
300   --progs-suffix=SUFFIX    program name suffix []
301   --enable-cross-compile   assume a cross-compiler is used
302   --sysroot=PATH           root of cross-build tree
303   --sysinclude=PATH        location of cross-build system headers
304   --target-os=OS           compiler targets OS [$target_os]
305   --target-exec=CMD        command to run executables on target
306   --target-path=DIR        path to view of build directory on target
307   --target-samples=DIR     path to samples directory on target
308   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
309   --toolchain=NAME         set tool defaults according to NAME
310   --nm=NM                  use nm tool NM [$nm_default]
311   --ar=AR                  use archive tool AR [$ar_default]
312   --as=AS                  use assembler AS [$as_default]
313   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
314   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
315   --cc=CC                  use C compiler CC [$cc_default]
316   --cxx=CXX                use C compiler CXX [$cxx_default]
317   --objcc=OCC              use ObjC compiler OCC [$cc_default]
318   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
319   --ld=LD                  use linker LD [$ld_default]
320   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
321   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
322   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
323   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
324   --host-cc=HOSTCC         use host C compiler HOSTCC
325   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
326   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
327   --host-ld=HOSTLD         use host linker HOSTLD
328   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
329   --host-libs=HLIBS        use libs HLIBS when linking for host
330   --host-os=OS             compiler host OS [$target_os]
331   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
332   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
333   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
334   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
335   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
336   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
337   --extra-libs=ELIBS       add ELIBS [$ELIBS]
338   --extra-version=STRING   version string suffix []
339   --optflags=OPTFLAGS      override optimization-related compiler flags
340   --build-suffix=SUFFIX    library name suffix []
341   --enable-pic             build position-independent code
342   --enable-thumb           compile for Thumb instruction set
343   --enable-lto             use link-time optimization
344   --env="ENV=override"     override the environment variables
345
346 Advanced options (experts only):
347   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
348   --custom-allocator=NAME  use a supported custom allocator
349   --disable-symver         disable symbol versioning
350   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
351   --disable-safe-bitstream-reader
352                            disable buffer boundary checking in bitreaders
353                            (faster, but may crash)
354   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
355   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
356
357 Optimization options (experts only):
358   --disable-asm            disable all assembly optimizations
359   --disable-altivec        disable AltiVec optimizations
360   --disable-vsx            disable VSX optimizations
361   --disable-power8         disable POWER8 optimizations
362   --disable-amd3dnow       disable 3DNow! optimizations
363   --disable-amd3dnowext    disable 3DNow! extended optimizations
364   --disable-mmx            disable MMX optimizations
365   --disable-mmxext         disable MMXEXT optimizations
366   --disable-sse            disable SSE optimizations
367   --disable-sse2           disable SSE2 optimizations
368   --disable-sse3           disable SSE3 optimizations
369   --disable-ssse3          disable SSSE3 optimizations
370   --disable-sse4           disable SSE4 optimizations
371   --disable-sse42          disable SSE4.2 optimizations
372   --disable-avx            disable AVX optimizations
373   --disable-xop            disable XOP optimizations
374   --disable-fma3           disable FMA3 optimizations
375   --disable-fma4           disable FMA4 optimizations
376   --disable-avx2           disable AVX2 optimizations
377   --disable-aesni          disable AESNI optimizations
378   --disable-armv5te        disable armv5te optimizations
379   --disable-armv6          disable armv6 optimizations
380   --disable-armv6t2        disable armv6t2 optimizations
381   --disable-vfp            disable VFP optimizations
382   --disable-neon           disable NEON optimizations
383   --disable-inline-asm     disable use of inline assembly
384   --disable-yasm           disable use of nasm/yasm assembly
385   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
386   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
387   --disable-msa            disable MSA optimizations
388   --disable-mipsfpu        disable floating point MIPS optimizations
389   --disable-mmi            disable Loongson SIMD optimizations
390   --disable-fast-unaligned consider unaligned accesses slow
391
392 Developer options (useful when working on FFmpeg itself):
393   --disable-debug          disable debugging symbols
394   --enable-debug=LEVEL     set the debug level [$debuglevel]
395   --disable-optimizations  disable compiler optimizations
396   --enable-extra-warnings  enable more compiler warnings
397   --disable-stripping      disable stripping of executables and shared libraries
398   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
399                            2 causes a slowdown at runtime.
400   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
401   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
402                            leaks and errors, using the specified valgrind binary.
403                            Cannot be combined with --target-exec
404   --enable-ftrapv          Trap arithmetic overflows
405   --samples=PATH           location of test samples for FATE, if not set use
406                            \$FATE_SAMPLES at make invocation time.
407   --enable-neon-clobber-test check NEON registers for clobbering (should be
408                            used only for debugging purposes)
409   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
410                            should be used only for debugging purposes)
411   --enable-random          randomly enable/disable components
412   --disable-random
413   --enable-random=LIST     randomly enable/disable specific components or
414   --disable-random=LIST    component groups. LIST is a comma-separated list
415                            of NAME[:PROB] entries where NAME is a component
416                            (group) and PROB the probability associated with
417                            NAME (default 0.5).
418   --random-seed=VALUE      seed value for --enable/disable-random
419   --disable-valgrind-backtrace do not print a backtrace under Valgrind
420                            (only applies to --disable-optimizations builds)
421
422 NOTE: Object files are built at the place where configure is launched.
423 EOF
424   exit 0
425 }
426
427 quotes='""'
428 if test -t 1 && which tput >/dev/null 2>&1; then
429     ncolors=$(tput colors)
430     if test -n "$ncolors" && test $ncolors -ge 8; then
431         bold_color=$(tput bold)
432         warn_color=$(tput setaf 3)
433         error_color=$(tput setaf 1)
434         reset_color=$(tput sgr0)
435     fi
436     # 72 used instead of 80 since that's the default of pr
437     ncols=$(tput cols)
438 fi
439 : ${ncols:=72}
440
441 log(){
442     echo "$@" >> $logfile
443 }
444
445 log_file(){
446     log BEGIN $1
447     pr -n -t $1 >> $logfile
448     log END $1
449 }
450
451 warn(){
452     log "WARNING: $*"
453     WARNINGS="${WARNINGS}WARNING: $*\n"
454 }
455
456 die(){
457     log "$@"
458     echo "$error_color$bold_color$@$reset_color"
459     cat <<EOF
460
461 If you think configure made a mistake, make sure you are using the latest
462 version from Git.  If the latest version fails, report the problem to the
463 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
464 EOF
465     if disabled logging; then
466         cat <<EOF
467 Rerun configure with logging enabled (do not use --disable-logging), and
468 include the log this produces with your report.
469 EOF
470     else
471         cat <<EOF
472 Include the log file "$logfile" produced by configure as this will help
473 solve the problem.
474 EOF
475     fi
476     exit 1
477 }
478
479 # Avoid locale weirdness, besides we really just want to translate ASCII.
480 toupper(){
481     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
482 }
483
484 tolower(){
485     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
486 }
487
488 c_escape(){
489     echo "$*" | sed 's/["\\]/\\\0/g'
490 }
491
492 sh_quote(){
493     v=$(echo "$1" | sed "s/'/'\\\\''/g")
494     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
495     echo "$v"
496 }
497
498 cleanws(){
499     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
500 }
501
502 filter(){
503     pat=$1
504     shift
505     for v; do
506         eval "case $v in $pat) echo $v ;; esac"
507     done
508 }
509
510 filter_out(){
511     pat=$1
512     shift
513     for v; do
514         eval "case $v in $pat) ;; *) echo $v ;; esac"
515     done
516 }
517
518 map(){
519     m=$1
520     shift
521     for v; do eval $m; done
522 }
523
524 add_suffix(){
525     suffix=$1
526     shift
527     for v; do echo ${v}${suffix}; done
528 }
529
530 set_all(){
531     value=$1
532     shift
533     for var in $*; do
534         eval $var=$value
535     done
536 }
537
538 set_weak(){
539     value=$1
540     shift
541     for var; do
542         eval : \${$var:=$value}
543     done
544 }
545
546 sanitize_var_name(){
547     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
548 }
549
550 set_safe(){
551     var=$1
552     shift
553     eval $(sanitize_var_name "$var")='$*'
554 }
555
556 get_safe(){
557     eval echo \$$(sanitize_var_name "$1")
558 }
559
560 pushvar(){
561     for pvar in $*; do
562         eval level=\${${pvar}_level:=0}
563         eval ${pvar}_${level}="\$$pvar"
564         eval ${pvar}_level=$(($level+1))
565     done
566 }
567
568 popvar(){
569     for pvar in $*; do
570         eval level=\${${pvar}_level:-0}
571         test $level = 0 && continue
572         eval level=$(($level-1))
573         eval $pvar="\${${pvar}_${level}}"
574         eval ${pvar}_level=$level
575         eval unset ${pvar}_${level}
576     done
577 }
578
579 enable(){
580     set_all yes $*
581 }
582
583 disable(){
584     set_all no $*
585 }
586
587 enable_weak(){
588     set_weak yes $*
589 }
590
591 disable_weak(){
592     set_weak no $*
593 }
594
595 enable_safe(){
596     for var; do
597         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
598     done
599 }
600
601 disable_safe(){
602     for var; do
603         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
604     done
605 }
606
607 do_enable_deep(){
608     for var; do
609         enabled $var && continue
610         eval sel="\$${var}_select"
611         eval sgs="\$${var}_suggest"
612         pushvar var sgs
613         enable_deep $sel
614         popvar sgs
615         enable_deep_weak $sgs
616         popvar var
617     done
618 }
619
620 enable_deep(){
621     do_enable_deep $*
622     enable $*
623 }
624
625 enable_deep_weak(){
626     for var; do
627         disabled $var && continue
628         pushvar var
629         do_enable_deep $var
630         popvar var
631         enable_weak $var
632     done
633 }
634
635 enabled(){
636     test "${1#!}" = "$1" && op='=' || op=!=
637     eval test "x\$${1#!}" $op "xyes"
638 }
639
640 disabled(){
641     test "${1#!}" = "$1" && op='=' || op=!=
642     eval test "x\$${1#!}" $op "xno"
643 }
644
645 enabled_all(){
646     for opt; do
647         enabled $opt || return 1
648     done
649 }
650
651 disabled_all(){
652     for opt; do
653         disabled $opt || return 1
654     done
655 }
656
657 enabled_any(){
658     for opt; do
659         enabled $opt && return 0
660     done
661 }
662
663 disabled_any(){
664     for opt; do
665         disabled $opt && return 0
666     done
667     return 1
668 }
669
670 set_default(){
671     for opt; do
672         eval : \${$opt:=\$${opt}_default}
673     done
674 }
675
676 is_in(){
677     value=$1
678     shift
679     for var in $*; do
680         [ $var = $value ] && return 0
681     done
682     return 1
683 }
684
685 do_check_deps(){
686     for cfg; do
687         cfg="${cfg#!}"
688         enabled ${cfg}_checking && die "Circular dependency for $cfg."
689         disabled ${cfg}_checking && continue
690         enable ${cfg}_checking
691         append allopts $cfg
692
693         eval dep_all="\$${cfg}_deps"
694         eval dep_any="\$${cfg}_deps_any"
695         eval dep_sel="\$${cfg}_select"
696         eval dep_sgs="\$${cfg}_suggest"
697         eval dep_ifa="\$${cfg}_if"
698         eval dep_ifn="\$${cfg}_if_any"
699
700         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
701         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
702         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
703
704         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
705         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
706         enabled_all  $dep_all || disable $cfg
707         enabled_any  $dep_any || disable $cfg
708         disabled_any $dep_sel && disable $cfg
709
710         if enabled $cfg; then
711             enable_deep $dep_sel
712             enable_deep_weak $dep_sgs
713         fi
714
715         disable ${cfg}_checking
716     done
717 }
718
719 check_deps(){
720     unset allopts
721
722     do_check_deps "$@"
723
724     for cfg in $allopts; do
725         enabled $cfg || continue
726         eval dep_extralibs="\$${cfg}_extralibs"
727         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
728     done
729 }
730
731 print_config(){
732     pfx=$1
733     files=$2
734     shift 2
735     map 'eval echo "$v \${$v:-no}"' "$@" |
736     awk "BEGIN { split(\"$files\", files) }
737         {
738             c = \"$pfx\" toupper(\$1);
739             v = \$2;
740             sub(/yes/, 1, v);
741             sub(/no/,  0, v);
742             for (f in files) {
743                 file = files[f];
744                 if (file ~ /\\.h\$/) {
745                     printf(\"#define %s %d\\n\", c, v) >>file;
746                 } else if (file ~ /\\.asm\$/) {
747                     printf(\"%%define %s %d\\n\", c, v) >>file;
748                 } else if (file ~ /\\.mak\$/) {
749                     n = -v ? \"\" : \"!\";
750                     printf(\"%s%s=yes\\n\", n, c) >>file;
751                 } else if (file ~ /\\.texi\$/) {
752                     pre = -v ? \"\" : \"@c \";
753                     yesno = \$2;
754                     c2 = tolower(c);
755                     gsub(/_/, \"-\", c2);
756                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
757                 }
758             }
759         }"
760 }
761
762 print_enabled(){
763     suf=$1
764     shift
765     for v; do
766         enabled $v && printf "%s\n" ${v%$suf};
767     done
768 }
769
770 append(){
771     var=$1
772     shift
773     eval "$var=\"\$$var $*\""
774 }
775
776 prepend(){
777     var=$1
778     shift
779     eval "$var=\"$* \$$var\""
780 }
781
782 unique(){
783     var=$1
784     uniq_list=""
785     for tok in $(eval echo \$$var); do
786         uniq_list="$(filter_out $tok $uniq_list) $tok"
787     done
788     eval "$var=\"${uniq_list}\""
789 }
790
791 add_cppflags(){
792     append CPPFLAGS "$@"
793 }
794
795 add_cflags(){
796     append CFLAGS $($cflags_filter "$@")
797 }
798
799 add_cxxflags(){
800     append CXXFLAGS $($cflags_filter "$@")
801 }
802
803 add_asflags(){
804     append ASFLAGS $($asflags_filter "$@")
805 }
806
807 add_objcflags(){
808     append OBJCFLAGS $($objcflags_filter "$@")
809 }
810
811 add_ldflags(){
812     append LDFLAGS $($ldflags_filter "$@")
813 }
814
815 add_ldexeflags(){
816     append LDEXEFLAGS $($ldflags_filter "$@")
817 }
818
819 add_ldlibflags(){
820     append LDLIBFLAGS $($ldflags_filter "$@")
821 }
822
823 add_stripflags(){
824     append ASMSTRIPFLAGS "$@"
825 }
826
827 add_extralibs(){
828     prepend extralibs $($ldflags_filter "$@")
829 }
830
831 add_host_cppflags(){
832     append host_cppflags "$@"
833 }
834
835 add_host_cflags(){
836     append host_cflags $($host_cflags_filter "$@")
837 }
838
839 add_host_ldflags(){
840     append host_ldflags $($host_ldflags_filter "$@")
841 }
842
843 add_compat(){
844     append compat_objs $1
845     shift
846     map 'add_cppflags -D$v' "$@"
847 }
848
849 check_cmd(){
850     log "$@"
851     "$@" >> $logfile 2>&1
852 }
853
854 check_stat(){
855     log check_stat "$@"
856     stat "$1" >> $logfile 2>&1
857 }
858
859 cc_o(){
860     eval printf '%s\\n' $CC_O
861 }
862
863 cc_e(){
864     eval printf '%s\\n' $CC_E
865 }
866
867 check_cc(){
868     log check_cc "$@"
869     cat > $TMPC
870     log_file $TMPC
871     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
872 }
873
874 check_cxx(){
875     log check_cxx "$@"
876     cat > $TMPCPP
877     log_file $TMPCPP
878     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
879 }
880
881 check_objcc(){
882     log check_objcc "$@"
883     cat > $TMPM
884     log_file $TMPM
885     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
886 }
887
888 check_cpp(){
889     log check_cpp "$@"
890     cat > $TMPC
891     log_file $TMPC
892     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
893 }
894
895 as_o(){
896     eval printf '%s\\n' $AS_O
897 }
898
899 check_as(){
900     log check_as "$@"
901     cat > $TMPS
902     log_file $TMPS
903     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
904 }
905
906 check_inline_asm(){
907     log check_inline_asm "$@"
908     name="$1"
909     code="$2"
910     shift 2
911     disable $name
912     check_cc "$@" <<EOF && enable $name
913 void foo(void){ __asm__ volatile($code); }
914 EOF
915 }
916
917 check_insn(){
918     log check_insn "$@"
919     check_inline_asm ${1}_inline "\"$2\""
920     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
921 }
922
923 check_yasm(){
924     log check_yasm "$@"
925     echo "$1" > $TMPS
926     log_file $TMPS
927     shift 1
928     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
929 }
930
931 ld_o(){
932     eval printf '%s\\n' $LD_O
933 }
934
935 check_ld(){
936     log check_ld "$@"
937     type=$1
938     shift 1
939     flags=$(filter_out '-l*|*.so' $@)
940     libs=$(filter '-l*|*.so' $@)
941     check_$type $($cflags_filter $flags) || return
942     flags=$($ldflags_filter $flags)
943     libs=$($ldflags_filter $libs)
944     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
945 }
946
947 print_include(){
948     hdr=$1
949     test "${hdr%.h}" = "${hdr}" &&
950         echo "#include $hdr"    ||
951         echo "#include <$hdr>"
952 }
953
954 check_code(){
955     log check_code "$@"
956     check=$1
957     headers=$2
958     code=$3
959     shift 3
960     {
961         for hdr in $headers; do
962             print_include $hdr
963         done
964         echo "int main(void) { $code; return 0; }"
965     } | check_$check "$@"
966 }
967
968 check_cppflags(){
969     log check_cppflags "$@"
970     check_cc "$@" <<EOF && append CPPFLAGS "$@"
971 int x;
972 EOF
973 }
974
975 test_cflags(){
976     log test_cflags "$@"
977     set -- $($cflags_filter "$@")
978     check_cc "$@" <<EOF
979 int x;
980 EOF
981 }
982
983 check_cflags(){
984     log check_cflags "$@"
985     test_cflags "$@" && add_cflags "$@"
986 }
987
988 check_cxxflags(){
989     log check_cxxflags "$@"
990     set -- $($cflags_filter "$@")
991     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
992 int x;
993 EOF
994 }
995
996 test_objcflags(){
997     log test_cflags "$@"
998     set -- $($cflags_filter "$@")
999     check_objcc "$@" <<EOF
1000 int x;
1001 EOF
1002 }
1003
1004 check_objcflags(){
1005     log check_cflags "$@"
1006     test_objcflags "$@" && add_objcflags "$@"
1007 }
1008
1009 test_ldflags(){
1010     log test_ldflags "$@"
1011     check_ld "cc" "$@" <<EOF
1012 int main(void){ return 0; }
1013 EOF
1014 }
1015
1016 check_ldflags(){
1017     log check_ldflags "$@"
1018     test_ldflags "$@" && add_ldflags "$@"
1019 }
1020
1021 test_stripflags(){
1022     log test_stripflags "$@"
1023     # call check_cc to get a fresh TMPO
1024     check_cc <<EOF
1025 int main(void) { return 0; }
1026 EOF
1027     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1028 }
1029
1030 check_stripflags(){
1031     log check_stripflags "$@"
1032     test_stripflags "$@" && add_stripflags "$@"
1033 }
1034
1035 check_header(){
1036     log check_header "$@"
1037     header=$1
1038     shift
1039     disable_safe $header
1040     check_cpp "$@" <<EOF && enable_safe $header
1041 #include <$header>
1042 int x;
1043 EOF
1044 }
1045
1046 check_header_objcc(){
1047     log check_header_objcc "$@"
1048     rm -f -- "$TMPO"
1049     header=$1
1050     shift
1051     disable_safe $header
1052     {
1053        echo "#include <$header>"
1054        echo "int main(void) { return 0; }"
1055     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1056 }
1057
1058 check_func(){
1059     log check_func "$@"
1060     func=$1
1061     shift
1062     disable $func
1063     check_ld "cc" "$@" <<EOF && enable $func
1064 extern int $func();
1065 int main(void){ $func(); }
1066 EOF
1067 }
1068
1069 check_complexfunc(){
1070     log check_complexfunc "$@"
1071     func=$1
1072     narg=$2
1073     shift 2
1074     test $narg = 2 && args="f, g" || args="f * I"
1075     disable $func
1076     check_ld "cc" "$@" <<EOF && enable $func
1077 #include <complex.h>
1078 #include <math.h>
1079 float foo(complex float f, complex float g) { return $func($args); }
1080 int main(void){ return (int) foo; }
1081 EOF
1082 }
1083
1084 check_mathfunc(){
1085     log check_mathfunc "$@"
1086     func=$1
1087     narg=$2
1088     shift 2
1089     test $narg = 2 && args="f, g" || args="f"
1090     disable $func
1091     check_ld "cc" "$@" <<EOF && enable $func
1092 #include <math.h>
1093 float foo(float f, float g) { return $func($args); }
1094 int main(void){ return (int) foo; }
1095 EOF
1096 }
1097
1098 check_func_headers(){
1099     log check_func_headers "$@"
1100     headers=$1
1101     funcs=$2
1102     shift 2
1103     {
1104         for hdr in $headers; do
1105             print_include $hdr
1106         done
1107         for func in $funcs; do
1108             echo "long check_$func(void) { return (long) $func; }"
1109         done
1110         echo "int main(void) { return 0; }"
1111     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1112 }
1113
1114 check_class_headers_cpp(){
1115     log check_class_headers_cpp "$@"
1116     headers=$1
1117     classes=$2
1118     shift 2
1119     {
1120         for hdr in $headers; do
1121             echo "#include <$hdr>"
1122         done
1123         echo "int main(void) { "
1124         i=1
1125         for class in $classes; do
1126             echo "$class obj$i;"
1127             i=$(expr $i + 1)
1128         done
1129         echo "return 0; }"
1130     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1131 }
1132
1133 check_cpp_condition(){
1134     log check_cpp_condition "$@"
1135     header=$1
1136     condition=$2
1137     shift 2
1138     check_cpp "$@" <<EOF
1139 #include <$header>
1140 #if !($condition)
1141 #error "unsatisfied condition: $condition"
1142 #endif
1143 EOF
1144 }
1145
1146 check_lib(){
1147     log check_lib "$@"
1148     header="$1"
1149     func="$2"
1150     shift 2
1151     check_header $header && check_func $func "$@" && add_extralibs "$@"
1152 }
1153
1154 check_lib2(){
1155     log check_lib2 "$@"
1156     headers="$1"
1157     funcs="$2"
1158     shift 2
1159     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1160 }
1161
1162 check_lib_cpp(){
1163     log check_lib_cpp "$@"
1164     headers="$1"
1165     classes="$2"
1166     shift 2
1167     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1168 }
1169
1170 check_pkg_config(){
1171     log check_pkg_config "$@"
1172     pkgandversion="$1"
1173     pkg="${1%% *}"
1174     headers="$2"
1175     funcs="$3"
1176     shift 3
1177     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1178     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1179     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1180     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1181         set_safe "${pkg}_cflags" $pkg_cflags   &&
1182         set_safe "${pkg}_libs"   $pkg_libs
1183 }
1184
1185 check_exec(){
1186     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1187 }
1188
1189 check_exec_crash(){
1190     code=$(cat)
1191
1192     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1193     # are safe but may not be available everywhere.  Thus we use
1194     # raise(SIGTERM) instead.  The check is run in a subshell so we
1195     # can redirect the "Terminated" message from the shell.  SIGBUS
1196     # is not defined by standard C so it is used conditionally.
1197
1198     (check_exec "$@") >> $logfile 2>&1 <<EOF
1199 #include <signal.h>
1200 static void sighandler(int sig){
1201     raise(SIGTERM);
1202 }
1203 int foo(void){
1204     $code
1205 }
1206 int (*func_ptr)(void) = foo;
1207 int main(void){
1208     signal(SIGILL, sighandler);
1209     signal(SIGFPE, sighandler);
1210     signal(SIGSEGV, sighandler);
1211 #ifdef SIGBUS
1212     signal(SIGBUS, sighandler);
1213 #endif
1214     return func_ptr();
1215 }
1216 EOF
1217 }
1218
1219 check_type(){
1220     log check_type "$@"
1221     headers=$1
1222     type=$2
1223     shift 2
1224     disable_safe "$type"
1225     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1226 }
1227
1228 check_struct(){
1229     log check_struct "$@"
1230     headers=$1
1231     struct=$2
1232     member=$3
1233     shift 3
1234     disable_safe "${struct}_${member}"
1235     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1236         enable_safe "${struct}_${member}"
1237 }
1238
1239 check_builtin(){
1240     log check_builtin "$@"
1241     name=$1
1242     headers=$2
1243     builtin=$3
1244     shift 3
1245     disable "$name"
1246     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1247 }
1248
1249 check_compile_assert(){
1250     log check_compile_assert "$@"
1251     name=$1
1252     headers=$2
1253     condition=$3
1254     shift 3
1255     disable "$name"
1256     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1257 }
1258
1259 require(){
1260     name="$1"
1261     header="$2"
1262     func="$3"
1263     shift 3
1264     check_lib $header $func "$@" || die "ERROR: $name not found"
1265 }
1266
1267 require2(){
1268     name="$1"
1269     headers="$2"
1270     func="$3"
1271     shift 3
1272     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1273 }
1274
1275 require_cpp(){
1276     name="$1"
1277     headers="$2"
1278     classes="$3"
1279     shift 3
1280     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1281 }
1282
1283 use_pkg_config(){
1284     pkg="$1"
1285     check_pkg_config "$@" || return 1
1286     add_cflags    $(get_safe "${pkg}_cflags")
1287     add_extralibs $(get_safe "${pkg}_libs")
1288 }
1289
1290 require_pkg_config(){
1291     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1292 }
1293
1294 require_libfreetype(){
1295     log require_libfreetype "$@"
1296     pkg="freetype2"
1297     check_cmd $pkg_config --exists --print-errors $pkg \
1298       || die "ERROR: $pkg not found"
1299     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1300     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1301     {
1302         echo "#include <ft2build.h>"
1303         echo "#include FT_FREETYPE_H"
1304         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1305         echo "int main(void) { return 0; }"
1306     } | check_ld "cc" $pkg_cflags $pkg_libs \
1307       && set_safe "${pkg}_cflags" $pkg_cflags \
1308       && set_safe "${pkg}_libs"   $pkg_libs \
1309       || die "ERROR: $pkg not found"
1310     add_cflags    $(get_safe "${pkg}_cflags")
1311     add_extralibs $(get_safe "${pkg}_libs")
1312 }
1313
1314 hostcc_e(){
1315     eval printf '%s\\n' $HOSTCC_E
1316 }
1317
1318 hostcc_o(){
1319     eval printf '%s\\n' $HOSTCC_O
1320 }
1321
1322 check_host_cc(){
1323     log check_host_cc "$@"
1324     cat > $TMPC
1325     log_file $TMPC
1326     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1327 }
1328
1329 check_host_cpp(){
1330     log check_host_cpp "$@"
1331     cat > $TMPC
1332     log_file $TMPC
1333     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1334 }
1335
1336 check_host_cppflags(){
1337     log check_host_cppflags "$@"
1338     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1339 int x;
1340 EOF
1341 }
1342
1343 check_host_cflags(){
1344     log check_host_cflags "$@"
1345     set -- $($host_cflags_filter "$@")
1346     check_host_cc "$@" <<EOF && append host_cflags "$@"
1347 int x;
1348 EOF
1349 }
1350
1351 check_host_cpp_condition(){
1352     log check_host_cpp_condition "$@"
1353     header=$1
1354     condition=$2
1355     shift 2
1356     check_host_cpp "$@" <<EOF
1357 #include <$header>
1358 #if !($condition)
1359 #error "unsatisfied condition: $condition"
1360 #endif
1361 EOF
1362 }
1363
1364 cp_if_changed(){
1365     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1366     mkdir -p "$(dirname $2)"
1367     $cp_f "$1" "$2"
1368 }
1369
1370 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1371 # system-dependent things.
1372
1373 AVCODEC_COMPONENTS="
1374     bsfs
1375     decoders
1376     encoders
1377     hwaccels
1378     parsers
1379 "
1380
1381 AVDEVICE_COMPONENTS="
1382     indevs
1383     outdevs
1384 "
1385 AVFILTER_COMPONENTS="
1386     filters
1387 "
1388 AVFORMAT_COMPONENTS="
1389     demuxers
1390     muxers
1391     protocols
1392 "
1393
1394 AVRESAMPLE_COMPONENTS=""
1395 AVUTIL_COMPONENTS=""
1396
1397 COMPONENT_LIST="
1398     $AVCODEC_COMPONENTS
1399     $AVDEVICE_COMPONENTS
1400     $AVFILTER_COMPONENTS
1401     $AVFORMAT_COMPONENTS
1402     $AVRESAMPLE_COMPONENTS
1403     $AVUTIL_COMPONENTS
1404 "
1405
1406 EXAMPLE_LIST="
1407     avio_reading_example
1408     avio_dir_cmd_example
1409     decoding_encoding_example
1410     demuxing_decoding_example
1411     extract_mvs_example
1412     filter_audio_example
1413     filtering_audio_example
1414     filtering_video_example
1415     metadata_example
1416     muxing_example
1417     qsvdec_example
1418     remuxing_example
1419     resampling_audio_example
1420     scaling_video_example
1421     transcode_aac_example
1422     transcoding_example
1423 "
1424
1425 EXTERNAL_LIBRARY_LIST="
1426     avisynth
1427     bzlib
1428     chromaprint
1429     crystalhd
1430     cuda
1431     decklink
1432     frei0r
1433     gcrypt
1434     gmp
1435     gnutls
1436     iconv
1437     ladspa
1438     libass
1439     libbluray
1440     libbs2b
1441     libcaca
1442     libcdio
1443     libcelt
1444     libdc1394
1445     libdcadec
1446     libfaac
1447     libfdk_aac
1448     libflite
1449     libfontconfig
1450     libfreetype
1451     libfribidi
1452     libgme
1453     libgsm
1454     libiec61883
1455     libilbc
1456     libkvazaar
1457     libmfx
1458     libmodplug
1459     libmp3lame
1460     libnut
1461     libopencore_amrnb
1462     libopencore_amrwb
1463     libopencv
1464     libopenh264
1465     libopenjpeg
1466     libopus
1467     libpulse
1468     librtmp
1469     librubberband
1470     libschroedinger
1471     libshine
1472     libsmbclient
1473     libsnappy
1474     libsoxr
1475     libspeex
1476     libssh
1477     libtesseract
1478     libtheora
1479     libtwolame
1480     libutvideo
1481     libv4l2
1482     libvidstab
1483     libvo_amrwbenc
1484     libvorbis
1485     libvpx
1486     libwavpack
1487     libwebp
1488     libx264
1489     libx265
1490     libxavs
1491     libxcb
1492     libxcb_shm
1493     libxcb_shape
1494     libxcb_xfixes
1495     libxvid
1496     libzimg
1497     libzmq
1498     libzvbi
1499     lzma
1500     mmal
1501     netcdf
1502     nvenc
1503     openal
1504     opencl
1505     opengl
1506     openssl
1507     schannel
1508     sdl
1509     securetransport
1510     x11grab
1511     xlib
1512     zlib
1513 "
1514
1515 DOCUMENT_LIST="
1516     doc
1517     htmlpages
1518     manpages
1519     podpages
1520     txtpages
1521 "
1522
1523 FEATURE_LIST="
1524     ftrapv
1525     gray
1526     hardcoded_tables
1527     runtime_cpudetect
1528     safe_bitstream_reader
1529     shared
1530     small
1531     static
1532     swscale_alpha
1533 "
1534
1535 HWACCEL_LIST="
1536     d3d11va
1537     dxva2
1538     vaapi
1539     vda
1540     vdpau
1541     videotoolbox
1542     xvmc
1543 "
1544
1545 LIBRARY_LIST="
1546     avcodec
1547     avdevice
1548     avfilter
1549     avformat
1550     avresample
1551     avutil
1552     postproc
1553     swresample
1554     swscale
1555 "
1556
1557 LICENSE_LIST="
1558     gpl
1559     nonfree
1560     version3
1561 "
1562
1563 PROGRAM_LIST="
1564     ffplay
1565     ffprobe
1566     ffserver
1567     ffmpeg
1568 "
1569
1570 SUBSYSTEM_LIST="
1571     dct
1572     dwt
1573     error_resilience
1574     faan
1575     fast_unaligned
1576     fft
1577     lsp
1578     lzo
1579     mdct
1580     pixelutils
1581     network
1582     rdft
1583 "
1584
1585 CONFIG_LIST="
1586     $COMPONENT_LIST
1587     $DOCUMENT_LIST
1588     $EXAMPLE_LIST
1589     $EXTERNAL_LIBRARY_LIST
1590     $FEATURE_LIST
1591     $HWACCEL_LIST
1592     $LICENSE_LIST
1593     $LIBRARY_LIST
1594     $PROGRAM_LIST
1595     $SUBSYSTEM_LIST
1596     fontconfig
1597     incompatible_libav_abi
1598     memalign_hack
1599     memory_poisoning
1600     neon_clobber_test
1601     pic
1602     pod2man
1603     raise_major
1604     thumb
1605     valgrind_backtrace
1606     xmm_clobber_test
1607 "
1608
1609 THREADS_LIST="
1610     pthreads
1611     os2threads
1612     w32threads
1613 "
1614
1615 ATOMICS_LIST="
1616     atomics_gcc
1617     atomics_suncc
1618     atomics_win32
1619 "
1620
1621 ARCH_LIST="
1622     aarch64
1623     alpha
1624     arm
1625     avr32
1626     avr32_ap
1627     avr32_uc
1628     bfin
1629     ia64
1630     m68k
1631     mips
1632     mips64
1633     parisc
1634     ppc
1635     ppc64
1636     s390
1637     sh4
1638     sparc
1639     sparc64
1640     tilegx
1641     tilepro
1642     tomi
1643     x86
1644     x86_32
1645     x86_64
1646 "
1647
1648 ARCH_EXT_LIST_ARM="
1649     armv5te
1650     armv6
1651     armv6t2
1652     armv8
1653     neon
1654     vfp
1655     vfpv3
1656     setend
1657 "
1658
1659 ARCH_EXT_LIST_MIPS="
1660     mipsfpu
1661     mips32r2
1662     mips64r2
1663     mips32r6
1664     mips64r6
1665     mipsdsp
1666     mipsdspr2
1667     msa
1668 "
1669
1670 ARCH_EXT_LIST_LOONGSON="
1671     loongson2
1672     loongson3
1673     mmi
1674 "
1675
1676 ARCH_EXT_LIST_X86_SIMD="
1677     aesni
1678     amd3dnow
1679     amd3dnowext
1680     avx
1681     avx2
1682     fma3
1683     fma4
1684     mmx
1685     mmxext
1686     sse
1687     sse2
1688     sse3
1689     sse4
1690     sse42
1691     ssse3
1692     xop
1693 "
1694
1695 ARCH_EXT_LIST_PPC="
1696     altivec
1697     dcbzl
1698     ldbrx
1699     power8
1700     ppc4xx
1701     vsx
1702 "
1703
1704 ARCH_EXT_LIST_X86="
1705     $ARCH_EXT_LIST_X86_SIMD
1706     cpunop
1707     i686
1708 "
1709
1710 ARCH_EXT_LIST="
1711     $ARCH_EXT_LIST_ARM
1712     $ARCH_EXT_LIST_PPC
1713     $ARCH_EXT_LIST_X86
1714     $ARCH_EXT_LIST_MIPS
1715     $ARCH_EXT_LIST_LOONGSON
1716 "
1717
1718 ARCH_FEATURES="
1719     aligned_stack
1720     fast_64bit
1721     fast_clz
1722     fast_cmov
1723     local_aligned_8
1724     local_aligned_16
1725     local_aligned_32
1726     simd_align_16
1727 "
1728
1729 BUILTIN_LIST="
1730     atomic_cas_ptr
1731     atomic_compare_exchange
1732     machine_rw_barrier
1733     MemoryBarrier
1734     mm_empty
1735     rdtsc
1736     sarestart
1737     sem_timedwait
1738     sync_val_compare_and_swap
1739 "
1740 HAVE_LIST_CMDLINE="
1741     inline_asm
1742     symver
1743     yasm
1744 "
1745
1746 HAVE_LIST_PUB="
1747     bigendian
1748     fast_unaligned
1749     incompatible_libav_abi
1750 "
1751
1752 HEADERS_LIST="
1753     alsa_asoundlib_h
1754     altivec_h
1755     arpa_inet_h
1756     asm_types_h
1757     cdio_paranoia_h
1758     cdio_paranoia_paranoia_h
1759     dispatch_dispatch_h
1760     dev_bktr_ioctl_bt848_h
1761     dev_bktr_ioctl_meteor_h
1762     dev_ic_bt8xx_h
1763     dev_video_bktr_ioctl_bt848_h
1764     dev_video_meteor_ioctl_meteor_h
1765     direct_h
1766     dirent_h
1767     dlfcn_h
1768     d3d11_h
1769     dxva_h
1770     ES2_gl_h
1771     gsm_h
1772     io_h
1773     mach_mach_time_h
1774     machine_ioctl_bt848_h
1775     machine_ioctl_meteor_h
1776     malloc_h
1777     opencv2_core_core_c_h
1778     openjpeg_2_1_openjpeg_h
1779     openjpeg_2_0_openjpeg_h
1780     openjpeg_1_5_openjpeg_h
1781     OpenGL_gl3_h
1782     poll_h
1783     sndio_h
1784     soundcard_h
1785     sys_mman_h
1786     sys_param_h
1787     sys_resource_h
1788     sys_select_h
1789     sys_soundcard_h
1790     sys_time_h
1791     sys_un_h
1792     sys_videoio_h
1793     termios_h
1794     udplite_h
1795     unistd_h
1796     valgrind_valgrind_h
1797     windows_h
1798     winsock2_h
1799 "
1800
1801 INTRINSICS_LIST="
1802     intrinsics_neon
1803 "
1804
1805 COMPLEX_FUNCS="
1806     cabs
1807     cexp
1808 "
1809
1810 MATH_FUNCS="
1811     atanf
1812     atan2f
1813     cbrt
1814     cbrtf
1815     copysign
1816     cosf
1817     erf
1818     exp2
1819     exp2f
1820     expf
1821     hypot
1822     isfinite
1823     isinf
1824     isnan
1825     ldexpf
1826     llrint
1827     llrintf
1828     log2
1829     log2f
1830     log10f
1831     lrint
1832     lrintf
1833     powf
1834     rint
1835     round
1836     roundf
1837     sinf
1838     trunc
1839     truncf
1840 "
1841
1842 SYSTEM_FUNCS="
1843     access
1844     aligned_malloc
1845     arc4random
1846     clock_gettime
1847     closesocket
1848     CommandLineToArgvW
1849     CoTaskMemFree
1850     CryptGenRandom
1851     dlopen
1852     fcntl
1853     flt_lim
1854     fork
1855     getaddrinfo
1856     gethrtime
1857     getopt
1858     GetProcessAffinityMask
1859     GetProcessMemoryInfo
1860     GetProcessTimes
1861     getrusage
1862     GetSystemTimeAsFileTime
1863     gettimeofday
1864     glob
1865     glXGetProcAddress
1866     gmtime_r
1867     inet_aton
1868     isatty
1869     jack_port_get_latency_range
1870     kbhit
1871     localtime_r
1872     lstat
1873     lzo1x_999_compress
1874     mach_absolute_time
1875     MapViewOfFile
1876     memalign
1877     mkstemp
1878     mmap
1879     mprotect
1880     nanosleep
1881     PeekNamedPipe
1882     posix_memalign
1883     pthread_cancel
1884     sched_getaffinity
1885     SetConsoleTextAttribute
1886     SetConsoleCtrlHandler
1887     setmode
1888     setrlimit
1889     Sleep
1890     strerror_r
1891     sysconf
1892     sysctl
1893     usleep
1894     UTGetOSTypeFromString
1895     VirtualAlloc
1896     wglGetProcAddress
1897 "
1898
1899 TOOLCHAIN_FEATURES="
1900     as_dn_directive
1901     as_func
1902     as_object_arch
1903     asm_mod_q
1904     attribute_may_alias
1905     attribute_packed
1906     ebp_available
1907     ebx_available
1908     gnu_as
1909     gnu_windres
1910     ibm_asm
1911     inline_asm_direct_symbol_refs
1912     inline_asm_labels
1913     inline_asm_nonlocal_labels
1914     pragma_deprecated
1915     rsync_contimeout
1916     symver_asm_label
1917     symver_gnu_asm
1918     vfp_args
1919     xform_asm
1920     xmm_clobbers
1921 "
1922
1923 TYPES_LIST="
1924     CONDITION_VARIABLE_Ptr
1925     socklen_t
1926     struct_addrinfo
1927     struct_group_source_req
1928     struct_ip_mreq_source
1929     struct_ipv6_mreq
1930     struct_pollfd
1931     struct_rusage_ru_maxrss
1932     struct_sctp_event_subscribe
1933     struct_sockaddr_in6
1934     struct_sockaddr_sa_len
1935     struct_sockaddr_storage
1936     struct_stat_st_mtim_tv_nsec
1937     struct_v4l2_frmivalenum_discrete
1938 "
1939
1940 HAVE_LIST="
1941     $ARCH_EXT_LIST
1942     $(add_suffix _external $ARCH_EXT_LIST)
1943     $(add_suffix _inline   $ARCH_EXT_LIST)
1944     $ARCH_FEATURES
1945     $ATOMICS_LIST
1946     $BUILTIN_LIST
1947     $COMPLEX_FUNCS
1948     $HAVE_LIST_CMDLINE
1949     $HAVE_LIST_PUB
1950     $HEADERS_LIST
1951     $INTRINSICS_LIST
1952     $MATH_FUNCS
1953     $SYSTEM_FUNCS
1954     $THREADS_LIST
1955     $TOOLCHAIN_FEATURES
1956     $TYPES_LIST
1957     atomics_native
1958     dos_paths
1959     dxva2_lib
1960     dxva2api_cobj
1961     libc_msvcrt
1962     libdc1394_1
1963     libdc1394_2
1964     makeinfo
1965     makeinfo_html
1966     perl
1967     pod2man
1968     sdl
1969     section_data_rel_ro
1970     texi2html
1971     threads
1972     vaapi_x11
1973     vdpau_x11
1974     winrt
1975     xlib
1976 "
1977
1978 # options emitted with CONFIG_ prefix but not available on the command line
1979 CONFIG_EXTRA="
1980     aandcttables
1981     ac3dsp
1982     audio_frame_queue
1983     audiodsp
1984     blockdsp
1985     bswapdsp
1986     cabac
1987     dirac_parse
1988     dvprofile
1989     exif
1990     faandct
1991     faanidct
1992     fdctdsp
1993     flacdsp
1994     fmtconvert
1995     frame_thread_encoder
1996     g722dsp
1997     golomb
1998     gplv3
1999     h263dsp
2000     h264chroma
2001     h264dsp
2002     h264pred
2003     h264qpel
2004     hpeldsp
2005     huffman
2006     huffyuvdsp
2007     huffyuvencdsp
2008     idctdsp
2009     iirfilter
2010     imdct15
2011     intrax8
2012     ividsp
2013     jpegtables
2014     lgplv3
2015     libx262
2016     llauddsp
2017     llviddsp
2018     lpc
2019     lzf
2020     me_cmp
2021     mpeg_er
2022     mpegaudio
2023     mpegaudiodsp
2024     mpegvideo
2025     mpegvideoenc
2026     mss34dsp
2027     pixblockdsp
2028     qpeldsp
2029     qsv
2030     qsvdec
2031     qsvenc
2032     rangecoder
2033     riffdec
2034     riffenc
2035     rtpdec
2036     rtpenc_chain
2037     rv34dsp
2038     sinewin
2039     snappy
2040     startcode
2041     texturedsp
2042     texturedspenc
2043     tpeldsp
2044     videodsp
2045     vp3dsp
2046     vp56dsp
2047     vp8dsp
2048     wma_freqs
2049     wmv2dsp
2050 "
2051
2052 CMDLINE_SELECT="
2053     $ARCH_EXT_LIST
2054     $CONFIG_LIST
2055     $HAVE_LIST_CMDLINE
2056     $THREADS_LIST
2057     asm
2058     cross_compile
2059     debug
2060     extra_warnings
2061     logging
2062     lto
2063     optimizations
2064     rpath
2065     stripping
2066 "
2067
2068 PATHS_LIST="
2069     bindir
2070     datadir
2071     docdir
2072     incdir
2073     libdir
2074     mandir
2075     pkgconfigdir
2076     prefix
2077     shlibdir
2078 "
2079
2080 CMDLINE_SET="
2081     $PATHS_LIST
2082     ar
2083     arch
2084     as
2085     assert_level
2086     build_suffix
2087     cc
2088     objcc
2089     cpu
2090     cross_prefix
2091     custom_allocator
2092     cxx
2093     dep_cc
2094     doxygen
2095     env
2096     extra_version
2097     gas
2098     host_cc
2099     host_cflags
2100     host_ld
2101     host_ldflags
2102     host_libs
2103     host_os
2104     install
2105     ld
2106     logfile
2107     malloc_prefix
2108     nm
2109     optflags
2110     pkg_config
2111     pkg_config_flags
2112     progs_suffix
2113     random_seed
2114     ranlib
2115     samples
2116     strip
2117     sws_max_filter_size
2118     sysinclude
2119     sysroot
2120     target_exec
2121     target_os
2122     target_path
2123     target_samples
2124     tempprefix
2125     toolchain
2126     valgrind
2127     yasmexe
2128 "
2129
2130 CMDLINE_APPEND="
2131     extra_cflags
2132     extra_cxxflags
2133     extra_objcflags
2134     host_cppflags
2135 "
2136
2137 # code dependency declarations
2138
2139 # architecture extensions
2140
2141 armv5te_deps="arm"
2142 armv6_deps="arm"
2143 armv6t2_deps="arm"
2144 armv8_deps="aarch64"
2145 neon_deps_any="aarch64 arm"
2146 intrinsics_neon_deps="neon"
2147 vfp_deps_any="aarch64 arm"
2148 vfpv3_deps="vfp"
2149 setend_deps="arm"
2150
2151 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2152
2153 mipsfpu_deps="mips"
2154 mipsdsp_deps="mips"
2155 mipsdspr2_deps="mips"
2156 mips32r2_deps="mips"
2157 mips32r6_deps="mips"
2158 mips64r2_deps="mips"
2159 mips64r6_deps="mips"
2160 msa_deps="mips"
2161 mmi_deps="mips"
2162
2163 altivec_deps="ppc"
2164 dcbzl_deps="ppc"
2165 ldbrx_deps="ppc"
2166 ppc4xx_deps="ppc"
2167 vsx_deps="altivec"
2168 power8_deps="vsx"
2169
2170 cpunop_deps="i686"
2171 x86_64_select="i686"
2172 x86_64_suggest="fast_cmov"
2173
2174 amd3dnow_deps="mmx"
2175 amd3dnowext_deps="amd3dnow"
2176 i686_deps="x86"
2177 mmx_deps="x86"
2178 mmxext_deps="mmx"
2179 sse_deps="mmxext"
2180 sse2_deps="sse"
2181 sse3_deps="sse2"
2182 ssse3_deps="sse3"
2183 sse4_deps="ssse3"
2184 sse42_deps="sse4"
2185 aesni_deps="sse42"
2186 avx_deps="sse42"
2187 xop_deps="avx"
2188 fma3_deps="avx"
2189 fma4_deps="avx"
2190 avx2_deps="avx"
2191
2192 mmx_external_deps="yasm"
2193 mmx_inline_deps="inline_asm"
2194 mmx_suggest="mmx_external mmx_inline"
2195
2196 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2197     eval dep=\$${ext}_deps
2198     eval ${ext}_external_deps='"${dep}_external"'
2199     eval ${ext}_inline_deps='"${dep}_inline"'
2200     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2201 done
2202
2203 aligned_stack_if_any="aarch64 ppc x86"
2204 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2205 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2206 fast_unaligned_if_any="aarch64 ppc x86"
2207 simd_align_16_if_any="altivec neon sse"
2208
2209 # system capabilities
2210 symver_if_any="symver_asm_label symver_gnu_asm"
2211 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2212
2213 # threading support
2214 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2215 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2216 atomics_win32_if="MemoryBarrier"
2217 atomics_native_if_any="$ATOMICS_LIST"
2218 w32threads_deps="atomics_native"
2219 threads_if_any="$THREADS_LIST"
2220
2221 # subsystems
2222 dct_select="rdft"
2223 dirac_parse_select="golomb"
2224 error_resilience_select="me_cmp"
2225 faandct_deps="faan fdctdsp"
2226 faanidct_deps="faan idctdsp"
2227 frame_thread_encoder_deps="encoders threads"
2228 intrax8_select="error_resilience"
2229 mdct_select="fft"
2230 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2231 mpeg_er_select="error_resilience"
2232 mpegaudio_select="mpegaudiodsp"
2233 mpegaudiodsp_select="dct"
2234 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2235 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2236 qsvdec_select="qsv"
2237 qsvenc_select="qsv"
2238 rdft_select="fft"
2239
2240 # decoders / encoders
2241 aac_decoder_select="imdct15 mdct sinewin"
2242 aac_fixed_decoder_select="mdct sinewin"
2243 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2244 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2245 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2246 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2247 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2248 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2249 adpcm_g722_decoder_select="g722dsp"
2250 adpcm_g722_encoder_select="g722dsp"
2251 aic_decoder_select="golomb idctdsp"
2252 alac_encoder_select="lpc"
2253 als_decoder_select="bswapdsp"
2254 amrnb_decoder_select="lsp"
2255 amrwb_decoder_select="lsp"
2256 amv_decoder_select="sp5x_decoder exif"
2257 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2258 ape_decoder_select="bswapdsp llauddsp"
2259 apng_decoder_select="zlib"
2260 apng_encoder_select="huffyuvencdsp zlib"
2261 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2262 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2263 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2264 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2265 atrac1_decoder_select="mdct sinewin"
2266 atrac3_decoder_select="mdct"
2267 atrac3p_decoder_select="mdct sinewin"
2268 avrn_decoder_select="exif jpegtables"
2269 bink_decoder_select="blockdsp hpeldsp"
2270 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2271 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2272 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2273 cllc_decoder_select="bswapdsp"
2274 comfortnoise_encoder_select="lpc"
2275 cook_decoder_select="audiodsp mdct sinewin"
2276 cscd_decoder_select="lzo"
2277 cscd_decoder_suggest="zlib"
2278 dca_decoder_select="mdct"
2279 dds_decoder_select="texturedsp"
2280 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2281 dnxhd_decoder_select="blockdsp idctdsp"
2282 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2283 dvvideo_decoder_select="dvprofile idctdsp"
2284 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2285 dxa_decoder_select="zlib"
2286 dxv_decoder_select="lzf texturedsp"
2287 eac3_decoder_select="ac3_decoder"
2288 eac3_encoder_select="ac3_encoder"
2289 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2290 eatgq_decoder_select="aandcttables"
2291 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2292 exr_decoder_select="zlib"
2293 ffv1_decoder_select="golomb rangecoder"
2294 ffv1_encoder_select="rangecoder"
2295 ffvhuff_decoder_select="huffyuv_decoder"
2296 ffvhuff_encoder_select="huffyuv_encoder"
2297 fic_decoder_select="golomb"
2298 flac_decoder_select="flacdsp golomb"
2299 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2300 flashsv2_decoder_select="zlib"
2301 flashsv2_encoder_select="zlib"
2302 flashsv_decoder_select="zlib"
2303 flashsv_encoder_select="zlib"
2304 flv_decoder_select="h263_decoder"
2305 flv_encoder_select="h263_encoder"
2306 fourxm_decoder_select="blockdsp bswapdsp"
2307 fraps_decoder_select="bswapdsp huffman"
2308 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2309 g729_decoder_select="audiodsp"
2310 h261_decoder_select="mpegvideo"
2311 h261_encoder_select="aandcttables mpegvideoenc"
2312 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2313 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2314 h263i_decoder_select="h263_decoder"
2315 h263p_decoder_select="h263_decoder"
2316 h263p_encoder_select="h263_encoder"
2317 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2318 h264_decoder_suggest="error_resilience"
2319 h264_qsv_decoder_deps="libmfx"
2320 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2321 h264_qsv_encoder_deps="libmfx"
2322 h264_qsv_encoder_select="qsvenc"
2323 hap_decoder_select="snappy texturedsp"
2324 hap_encoder_deps="libsnappy"
2325 hap_encoder_select="texturedspenc"
2326 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2327 hevc_qsv_decoder_deps="libmfx"
2328 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2329 hevc_qsv_encoder_deps="libmfx"
2330 hevc_qsv_encoder_select="qsvenc"
2331 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2332 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2333 iac_decoder_select="imc_decoder"
2334 imc_decoder_select="bswapdsp fft mdct sinewin"
2335 indeo3_decoder_select="hpeldsp"
2336 indeo4_decoder_select="ividsp"
2337 indeo5_decoder_select="ividsp"
2338 interplay_video_decoder_select="hpeldsp"
2339 jpegls_decoder_select="golomb mjpeg_decoder"
2340 jpegls_encoder_select="golomb"
2341 jv_decoder_select="blockdsp"
2342 lagarith_decoder_select="huffyuvdsp"
2343 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2344 loco_decoder_select="golomb"
2345 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2346 metasound_decoder_select="lsp mdct sinewin"
2347 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2348 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2349 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2350 mjpegb_decoder_select="mjpeg_decoder"
2351 mlp_decoder_select="mlp_parser"
2352 motionpixels_decoder_select="bswapdsp"
2353 mp1_decoder_select="mpegaudio"
2354 mp1float_decoder_select="mpegaudio"
2355 mp2_decoder_select="mpegaudio"
2356 mp2float_decoder_select="mpegaudio"
2357 mp3_decoder_select="mpegaudio"
2358 mp3adu_decoder_select="mpegaudio"
2359 mp3adufloat_decoder_select="mpegaudio"
2360 mp3float_decoder_select="mpegaudio"
2361 mp3on4_decoder_select="mpegaudio"
2362 mp3on4float_decoder_select="mpegaudio"
2363 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2364 mpc8_decoder_select="mpegaudiodsp"
2365 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2366 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2367 mpegvideo_decoder_select="mpegvideo"
2368 mpeg1video_decoder_select="mpegvideo"
2369 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2370 mpeg2video_decoder_select="mpegvideo"
2371 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2372 mpeg2_qsv_decoder_deps="libmfx"
2373 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2374 mpeg2_qsv_encoder_deps="libmfx"
2375 mpeg2_qsv_encoder_select="qsvenc"
2376 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2377 mpeg4_encoder_select="h263_encoder"
2378 msa1_decoder_select="mss34dsp"
2379 msmpeg4v1_decoder_select="h263_decoder"
2380 msmpeg4v2_decoder_select="h263_decoder"
2381 msmpeg4v2_encoder_select="h263_encoder"
2382 msmpeg4v3_decoder_select="h263_decoder"
2383 msmpeg4v3_encoder_select="h263_encoder"
2384 mss2_decoder_select="vc1_decoder"
2385 mts2_decoder_select="mss34dsp"
2386 mxpeg_decoder_select="mjpeg_decoder"
2387 nellymoser_decoder_select="mdct sinewin"
2388 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2389 nuv_decoder_select="idctdsp lzo"
2390 on2avc_decoder_select="mdct"
2391 opus_decoder_deps="swresample"
2392 opus_decoder_select="imdct15"
2393 png_decoder_select="zlib"
2394 png_encoder_select="huffyuvencdsp zlib"
2395 prores_decoder_select="blockdsp idctdsp"
2396 prores_encoder_select="fdctdsp"
2397 qcelp_decoder_select="lsp"
2398 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2399 ra_144_decoder_select="audiodsp"
2400 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2401 ralf_decoder_select="golomb"
2402 rawvideo_decoder_select="bswapdsp"
2403 rscc_decoder_select="zlib"
2404 rtjpeg_decoder_select="me_cmp"
2405 rv10_decoder_select="h263_decoder"
2406 rv10_encoder_select="h263_encoder"
2407 rv20_decoder_select="h263_decoder"
2408 rv20_encoder_select="h263_encoder"
2409 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2410 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2411 screenpresso_decoder_select="zlib"
2412 shorten_decoder_select="golomb"
2413 sipr_decoder_select="lsp"
2414 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2415 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2416 sonic_decoder_select="golomb rangecoder"
2417 sonic_encoder_select="golomb rangecoder"
2418 sonic_ls_encoder_select="golomb rangecoder"
2419 sp5x_decoder_select="mjpeg_decoder"
2420 svq1_decoder_select="hpeldsp"
2421 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2422 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2423 svq3_decoder_suggest="zlib"
2424 tak_decoder_select="audiodsp"
2425 tdsc_decoder_select="zlib mjpeg_decoder"
2426 theora_decoder_select="vp3_decoder"
2427 thp_decoder_select="mjpeg_decoder"
2428 tiff_decoder_suggest="zlib lzma"
2429 tiff_encoder_suggest="zlib"
2430 truehd_decoder_select="mlp_parser"
2431 truemotion2_decoder_select="bswapdsp"
2432 truespeech_decoder_select="bswapdsp"
2433 tscc_decoder_select="zlib"
2434 twinvq_decoder_select="mdct lsp sinewin"
2435 txd_decoder_select="texturedsp"
2436 utvideo_decoder_select="bswapdsp"
2437 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2438 vble_decoder_select="huffyuvdsp"
2439 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2440 vc1_qsv_decoder_deps="libmfx"
2441 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2442 vc1image_decoder_select="vc1_decoder"
2443 vorbis_decoder_select="mdct"
2444 vorbis_encoder_select="mdct"
2445 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2446 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2447 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2448 vp6a_decoder_select="vp6_decoder"
2449 vp6f_decoder_select="vp6_decoder"
2450 vp7_decoder_select="h264pred videodsp vp8dsp"
2451 vp8_decoder_select="h264pred videodsp vp8dsp"
2452 vp9_decoder_select="videodsp vp9_parser"
2453 webp_decoder_select="vp8_decoder exif"
2454 wmalossless_decoder_select="llauddsp"
2455 wmapro_decoder_select="mdct sinewin wma_freqs"
2456 wmav1_decoder_select="mdct sinewin wma_freqs"
2457 wmav1_encoder_select="mdct sinewin wma_freqs"
2458 wmav2_decoder_select="mdct sinewin wma_freqs"
2459 wmav2_encoder_select="mdct sinewin wma_freqs"
2460 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2461 wmv1_decoder_select="h263_decoder"
2462 wmv1_encoder_select="h263_encoder"
2463 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2464 wmv2_encoder_select="h263_encoder wmv2dsp"
2465 wmv3_decoder_select="vc1_decoder"
2466 wmv3image_decoder_select="wmv3_decoder"
2467 xma1_decoder_select="wmapro_decoder"
2468 xma2_decoder_select="wmapro_decoder"
2469 zerocodec_decoder_select="zlib"
2470 zlib_decoder_select="zlib"
2471 zlib_encoder_select="zlib"
2472 zmbv_decoder_select="zlib"
2473 zmbv_encoder_select="zlib"
2474
2475 # hardware accelerators
2476 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2477 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2478 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2479 vaapi_deps="va_va_h"
2480 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2481 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2482 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2483 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2484 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2485 xvmc_deps="X11_extensions_XvMClib_h"
2486
2487 h263_vaapi_hwaccel_deps="vaapi"
2488 h263_vaapi_hwaccel_select="h263_decoder"
2489 h263_videotoolbox_hwaccel_deps="videotoolbox"
2490 h263_videotoolbox_hwaccel_select="h263_decoder"
2491 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2492 h264_d3d11va_hwaccel_deps="d3d11va"
2493 h264_d3d11va_hwaccel_select="h264_decoder"
2494 h264_dxva2_hwaccel_deps="dxva2"
2495 h264_dxva2_hwaccel_select="h264_decoder"
2496 h264_mmal_decoder_deps="mmal"
2497 h264_mmal_decoder_select="mmal"
2498 h264_mmal_hwaccel_deps="mmal"
2499 h264_qsv_hwaccel_deps="libmfx"
2500 h264_vaapi_hwaccel_deps="vaapi"
2501 h264_vaapi_hwaccel_select="h264_decoder"
2502 h264_vda_decoder_deps="vda"
2503 h264_vda_decoder_select="h264_decoder"
2504 h264_vda_hwaccel_deps="vda"
2505 h264_vda_hwaccel_select="h264_decoder"
2506 h264_vda_old_hwaccel_deps="vda"
2507 h264_vda_old_hwaccel_select="h264_decoder"
2508 h264_vdpau_decoder_deps="vdpau"
2509 h264_vdpau_decoder_select="h264_decoder"
2510 h264_vdpau_hwaccel_deps="vdpau"
2511 h264_vdpau_hwaccel_select="h264_decoder"
2512 h264_videotoolbox_hwaccel_deps="videotoolbox"
2513 h264_videotoolbox_hwaccel_select="h264_decoder"
2514 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2515 hevc_d3d11va_hwaccel_select="hevc_decoder"
2516 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2517 hevc_dxva2_hwaccel_select="hevc_decoder"
2518 hevc_qsv_hwaccel_deps="libmfx"
2519 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2520 hevc_vaapi_hwaccel_select="hevc_decoder"
2521 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2522 hevc_vdpau_hwaccel_select="hevc_decoder"
2523 mpeg_vdpau_decoder_deps="vdpau"
2524 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2525 mpeg_xvmc_hwaccel_deps="xvmc"
2526 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2527 mpeg1_vdpau_decoder_deps="vdpau"
2528 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2529 mpeg1_vdpau_hwaccel_deps="vdpau"
2530 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2531 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2532 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2533 mpeg1_xvmc_hwaccel_deps="xvmc"
2534 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2535 mpeg2_crystalhd_decoder_select="crystalhd"
2536 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2537 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2538 mpeg2_dxva2_hwaccel_deps="dxva2"
2539 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2540 mpeg2_mmal_decoder_deps="mmal"
2541 mpeg2_mmal_decoder_select="mmal"
2542 mpeg2_mmal_hwaccel_deps="mmal"
2543 mpeg2_qsv_hwaccel_deps="libmfx"
2544 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2545 mpeg2_vaapi_hwaccel_deps="vaapi"
2546 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2547 mpeg2_vdpau_hwaccel_deps="vdpau"
2548 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2549 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2550 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2551 mpeg2_xvmc_hwaccel_deps="xvmc"
2552 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2553 mpeg4_crystalhd_decoder_select="crystalhd"
2554 mpeg4_mmal_decoder_deps="mmal"
2555 mpeg4_mmal_decoder_select="mmal"
2556 mpeg4_mmal_hwaccel_deps="mmal"
2557 mpeg4_vaapi_hwaccel_deps="vaapi"
2558 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2559 mpeg4_vdpau_decoder_deps="vdpau"
2560 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2561 mpeg4_vdpau_hwaccel_deps="vdpau"
2562 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2563 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2564 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2565 msmpeg4_crystalhd_decoder_select="crystalhd"
2566 vc1_crystalhd_decoder_select="crystalhd"
2567 vc1_d3d11va_hwaccel_deps="d3d11va"
2568 vc1_d3d11va_hwaccel_select="vc1_decoder"
2569 vc1_dxva2_hwaccel_deps="dxva2"
2570 vc1_dxva2_hwaccel_select="vc1_decoder"
2571 vc1_mmal_decoder_deps="mmal"
2572 vc1_mmal_decoder_select="mmal"
2573 vc1_mmal_hwaccel_deps="mmal"
2574 vc1_qsv_hwaccel_deps="libmfx"
2575 vc1_qsv_hwaccel_select="qsvdec_vc1"
2576 vc1_vaapi_hwaccel_deps="vaapi"
2577 vc1_vaapi_hwaccel_select="vc1_decoder"
2578 vc1_vdpau_decoder_deps="vdpau"
2579 vc1_vdpau_decoder_select="vc1_decoder"
2580 vc1_vdpau_hwaccel_deps="vdpau"
2581 vc1_vdpau_hwaccel_select="vc1_decoder"
2582 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2583 vp9_d3d11va_hwaccel_select="vp9_decoder"
2584 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2585 vp9_dxva2_hwaccel_select="vp9_decoder"
2586 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2587 vp9_vaapi_hwaccel_select="vp9_decoder"
2588 wmv3_crystalhd_decoder_select="crystalhd"
2589 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2590 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2591 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2592 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2593 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2594
2595 # parsers
2596 h264_parser_select="h264_decoder"
2597 hevc_parser_select="golomb"
2598 mpegvideo_parser_select="mpegvideo"
2599 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2600 vc1_parser_select="mpegvideo startcode vc1_decoder"
2601
2602 # bitstream_filters
2603 mjpeg2jpeg_bsf_select="jpegtables"
2604
2605 # external libraries
2606 chromaprint_muxer_deps="chromaprint"
2607 libcelt_decoder_deps="libcelt"
2608 libdcadec_decoder_deps="libdcadec"
2609 libfaac_encoder_deps="libfaac"
2610 libfaac_encoder_select="audio_frame_queue"
2611 libfdk_aac_decoder_deps="libfdk_aac"
2612 libfdk_aac_encoder_deps="libfdk_aac"
2613 libfdk_aac_encoder_select="audio_frame_queue"
2614 libgme_demuxer_deps="libgme"
2615 libgsm_decoder_deps="libgsm"
2616 libgsm_encoder_deps="libgsm"
2617 libgsm_ms_decoder_deps="libgsm"
2618 libgsm_ms_encoder_deps="libgsm"
2619 libilbc_decoder_deps="libilbc"
2620 libilbc_encoder_deps="libilbc"
2621 libkvazaar_encoder_deps="libkvazaar"
2622 libmodplug_demuxer_deps="libmodplug"
2623 libmp3lame_encoder_deps="libmp3lame"
2624 libmp3lame_encoder_select="audio_frame_queue"
2625 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2626 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2627 libopencore_amrnb_encoder_select="audio_frame_queue"
2628 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2629 libopenh264_encoder_deps="libopenh264"
2630 libopenjpeg_decoder_deps="libopenjpeg"
2631 libopenjpeg_encoder_deps="libopenjpeg"
2632 libopus_decoder_deps="libopus"
2633 libopus_encoder_deps="libopus"
2634 libopus_encoder_select="audio_frame_queue"
2635 libschroedinger_decoder_deps="libschroedinger"
2636 libschroedinger_encoder_deps="libschroedinger"
2637 libshine_encoder_deps="libshine"
2638 libshine_encoder_select="audio_frame_queue"
2639 libspeex_decoder_deps="libspeex"
2640 libspeex_encoder_deps="libspeex"
2641 libspeex_encoder_select="audio_frame_queue"
2642 libtheora_encoder_deps="libtheora"
2643 libtwolame_encoder_deps="libtwolame"
2644 libutvideo_decoder_deps="libutvideo"
2645 libutvideo_encoder_deps="libutvideo"
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 webm_dash_manifest_demuxer_select="matroska_demuxer"
2739 wtv_demuxer_select="riffdec"
2740 wtv_muxer_select="riffenc"
2741 xmv_demuxer_select="riffdec"
2742 xwma_demuxer_select="riffdec"
2743
2744 # indevs / outdevs
2745 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2746 alsa_outdev_deps="alsa_asoundlib_h"
2747 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2748 avfoundation_indev_select="avfoundation"
2749 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2750 caca_outdev_deps="libcaca"
2751 decklink_indev_deps="decklink pthreads"
2752 decklink_indev_extralibs="-lstdc++"
2753 decklink_outdev_deps="decklink pthreads"
2754 decklink_outdev_extralibs="-lstdc++"
2755 dshow_indev_deps="IBaseFilter"
2756 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2757 dv1394_indev_deps="dv1394"
2758 dv1394_indev_select="dv_demuxer"
2759 fbdev_indev_deps="linux_fb_h"
2760 fbdev_outdev_deps="linux_fb_h"
2761 gdigrab_indev_deps="CreateDIBSection"
2762 gdigrab_indev_extralibs="-lgdi32"
2763 gdigrab_indev_select="bmp_decoder"
2764 iec61883_indev_deps="libiec61883"
2765 jack_indev_deps="jack_jack_h"
2766 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2767 lavfi_indev_deps="avfilter"
2768 libcdio_indev_deps="libcdio"
2769 libdc1394_indev_deps="libdc1394"
2770 libv4l2_indev_deps="libv4l2"
2771 openal_indev_deps="openal"
2772 opengl_outdev_deps="opengl"
2773 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2774 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2775 pulse_indev_deps="libpulse"
2776 pulse_outdev_deps="libpulse"
2777 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2778 qtkit_indev_select="qtkit"
2779 sdl_outdev_deps="sdl"
2780 sndio_indev_deps="sndio_h"
2781 sndio_outdev_deps="sndio_h"
2782 v4l_indev_deps="linux_videodev_h"
2783 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2784 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2785 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2786 vfwcap_indev_extralibs="-lavicap32"
2787 x11grab_indev_deps="x11grab"
2788 x11grab_xcb_indev_deps="libxcb"
2789 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2790 xv_outdev_extralibs="-lXv -lX11 -lXext"
2791
2792 # protocols
2793 async_protocol_deps="threads"
2794 bluray_protocol_deps="libbluray"
2795 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2796 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2797 ffrtmpcrypt_protocol_select="tcp_protocol"
2798 ffrtmphttp_protocol_deps="!librtmp_protocol"
2799 ffrtmphttp_protocol_select="http_protocol"
2800 ftp_protocol_select="tcp_protocol"
2801 gopher_protocol_select="network"
2802 http_protocol_select="tcp_protocol"
2803 httpproxy_protocol_select="tcp_protocol"
2804 https_protocol_select="tls_protocol"
2805 icecast_protocol_select="http_protocol"
2806 librtmp_protocol_deps="librtmp"
2807 librtmpe_protocol_deps="librtmp"
2808 librtmps_protocol_deps="librtmp"
2809 librtmpt_protocol_deps="librtmp"
2810 librtmpte_protocol_deps="librtmp"
2811 libsmbclient_protocol_deps="libsmbclient gplv3"
2812 libssh_protocol_deps="libssh"
2813 mmsh_protocol_select="http_protocol"
2814 mmst_protocol_select="network"
2815 rtmp_protocol_deps="!librtmp_protocol"
2816 rtmp_protocol_select="tcp_protocol"
2817 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2818 rtmps_protocol_deps="!librtmp_protocol"
2819 rtmps_protocol_select="tls_protocol"
2820 rtmpt_protocol_select="ffrtmphttp_protocol"
2821 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2822 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2823 rtp_protocol_select="udp_protocol"
2824 sctp_protocol_deps="struct_sctp_event_subscribe"
2825 sctp_protocol_select="network"
2826 srtp_protocol_select="rtp_protocol"
2827 tcp_protocol_select="network"
2828 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2829 tls_gnutls_protocol_select="tcp_protocol"
2830 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2831 tls_openssl_protocol_select="tcp_protocol"
2832 tls_schannel_protocol_deps="schannel"
2833 tls_schannel_protocol_select="tcp_protocol"
2834 tls_securetransport_protocol_deps="securetransport"
2835 tls_securetransport_protocol_select="tcp_protocol"
2836 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2837 udp_protocol_select="network"
2838 udplite_protocol_select="network"
2839 unix_protocol_deps="sys_un_h"
2840 unix_protocol_select="network"
2841
2842 # filters
2843 afftfilt_filter_deps="avcodec"
2844 afftfilt_filter_select="fft"
2845 amovie_filter_deps="avcodec avformat"
2846 aresample_filter_deps="swresample"
2847 ass_filter_deps="libass"
2848 asyncts_filter_deps="avresample"
2849 atempo_filter_deps="avcodec"
2850 atempo_filter_select="rdft"
2851 azmq_filter_deps="libzmq"
2852 blackframe_filter_deps="gpl"
2853 boxblur_filter_deps="gpl"
2854 bs2b_filter_deps="libbs2b"
2855 colormatrix_filter_deps="gpl"
2856 cover_rect_filter_deps="avcodec avformat gpl"
2857 cropdetect_filter_deps="gpl"
2858 delogo_filter_deps="gpl"
2859 deshake_filter_select="pixelutils"
2860 drawtext_filter_deps="libfreetype"
2861 ebur128_filter_deps="gpl"
2862 eq_filter_deps="gpl"
2863 fftfilt_filter_deps="avcodec"
2864 fftfilt_filter_select="rdft"
2865 find_rect_filter_deps="avcodec avformat gpl"
2866 firequalizer_filter_deps="avcodec"
2867 firequalizer_filter_select="rdft"
2868 flite_filter_deps="libflite"
2869 frei0r_filter_deps="frei0r dlopen"
2870 frei0r_src_filter_deps="frei0r dlopen"
2871 fspp_filter_deps="gpl"
2872 geq_filter_deps="gpl"
2873 histeq_filter_deps="gpl"
2874 hqdn3d_filter_deps="gpl"
2875 hwupload_cuda_filter_deps="cuda"
2876 interlace_filter_deps="gpl"
2877 kerndeint_filter_deps="gpl"
2878 ladspa_filter_deps="ladspa dlopen"
2879 mcdeint_filter_deps="avcodec gpl"
2880 movie_filter_deps="avcodec avformat"
2881 mpdecimate_filter_deps="gpl"
2882 mpdecimate_filter_select="pixelutils"
2883 mptestsrc_filter_deps="gpl"
2884 negate_filter_deps="lut_filter"
2885 nnedi_filter_deps="gpl"
2886 ocr_filter_deps="libtesseract"
2887 ocv_filter_deps="libopencv"
2888 owdenoise_filter_deps="gpl"
2889 pan_filter_deps="swresample"
2890 perspective_filter_deps="gpl"
2891 phase_filter_deps="gpl"
2892 pp7_filter_deps="gpl"
2893 pp_filter_deps="gpl postproc"
2894 pullup_filter_deps="gpl"
2895 removelogo_filter_deps="avcodec avformat swscale"
2896 repeatfields_filter_deps="gpl"
2897 resample_filter_deps="avresample"
2898 rubberband_filter_deps="librubberband"
2899 sab_filter_deps="gpl swscale"
2900 scale2ref_filter_deps="swscale"
2901 scale_filter_deps="swscale"
2902 select_filter_select="pixelutils"
2903 showcqt_filter_deps="avcodec avformat swscale"
2904 showcqt_filter_select="fft"
2905 showfreqs_filter_deps="avcodec"
2906 showfreqs_filter_select="fft"
2907 showspectrum_filter_deps="avcodec"
2908 showspectrum_filter_select="fft"
2909 showspectrumpic_filter_deps="avcodec"
2910 showspectrumpic_filter_select="fft"
2911 smartblur_filter_deps="gpl swscale"
2912 sofalizer_filter_deps="netcdf avcodec"
2913 sofalizer_filter_select="fft"
2914 spectrumsynth_filter_deps="avcodec"
2915 spectrumsynth_filter_select="fft"
2916 spp_filter_deps="gpl avcodec"
2917 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2918 stereo3d_filter_deps="gpl"
2919 subtitles_filter_deps="avformat avcodec libass"
2920 super2xsai_filter_deps="gpl"
2921 pixfmts_super2xsai_test_deps="super2xsai_filter"
2922 tinterlace_filter_deps="gpl"
2923 tinterlace_merge_test_deps="tinterlace_filter"
2924 tinterlace_pad_test_deps="tinterlace_filter"
2925 uspp_filter_deps="gpl avcodec"
2926 vidstabdetect_filter_deps="libvidstab"
2927 vidstabtransform_filter_deps="libvidstab"
2928 zmq_filter_deps="libzmq"
2929 zoompan_filter_deps="swscale"
2930 zscale_filter_deps="libzimg"
2931
2932 # examples
2933 avcodec_example_deps="avcodec avutil"
2934 avio_dir_cmd="avformat avutil"
2935 avio_reading="avformat avcodec avutil"
2936 decoding_encoding_example_deps="avcodec avformat avutil"
2937 demuxing_decoding_example_deps="avcodec avformat avutil"
2938 extract_mvs_example_deps="avcodec avformat avutil"
2939 filter_audio_example_deps="avfilter avutil"
2940 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2941 filtering_video_example_deps="avfilter avcodec avformat avutil"
2942 metadata_example_deps="avformat avutil"
2943 muxing_example_deps="avcodec avformat avutil swscale"
2944 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2945 remuxing_example_deps="avcodec avformat avutil"
2946 resampling_audio_example_deps="avutil swresample"
2947 scaling_video_example_deps="avutil swscale"
2948 transcode_aac_example_deps="avcodec avformat swresample"
2949 transcoding_example_deps="avfilter avcodec avformat avutil"
2950
2951 # libraries, in linking order
2952 avcodec_deps="avutil"
2953 avdevice_deps="avformat avcodec avutil"
2954 avfilter_deps="avutil"
2955 avformat_deps="avcodec avutil"
2956 avresample_deps="avutil"
2957 postproc_deps="avutil gpl"
2958 swresample_deps="avutil"
2959 swscale_deps="avutil"
2960
2961 # programs
2962 ffmpeg_deps="avcodec avfilter avformat swresample"
2963 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2964                null_filter
2965                setpts_filter trim_filter"
2966 ffplay_deps="avcodec avformat swscale swresample sdl"
2967 ffplay_libs='$sdl_libs'
2968 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2969 ffprobe_deps="avcodec avformat"
2970 ffserver_deps="avformat fork sarestart"
2971 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2972
2973 # documentation
2974 podpages_deps="perl"
2975 manpages_deps="perl pod2man"
2976 htmlpages_deps="perl"
2977 htmlpages_deps_any="makeinfo_html texi2html"
2978 txtpages_deps="perl makeinfo"
2979 doc_deps_any="manpages htmlpages podpages txtpages"
2980
2981 # default parameters
2982
2983 logfile="config.log"
2984
2985 # installation paths
2986 prefix_default="/usr/local"
2987 bindir_default='${prefix}/bin'
2988 datadir_default='${prefix}/share/ffmpeg'
2989 docdir_default='${prefix}/share/doc/ffmpeg'
2990 incdir_default='${prefix}/include'
2991 libdir_default='${prefix}/lib'
2992 mandir_default='${prefix}/share/man'
2993
2994 # toolchain
2995 ar_default="ar"
2996 cc_default="gcc"
2997 cxx_default="g++"
2998 host_cc_default="gcc"
2999 cp_f="cp -f"
3000 doxygen_default="doxygen"
3001 install="install"
3002 ln_s="ln -s -f"
3003 nm_default="nm -g"
3004 objformat="elf"
3005 pkg_config_default=pkg-config
3006 ranlib_default="ranlib"
3007 strip_default="strip"
3008 yasmexe_default="yasm"
3009 windres_default="windres"
3010
3011 # OS
3012 target_os_default=$(tolower $(uname -s))
3013 host_os=$target_os_default
3014
3015 # machine
3016 if test "$target_os_default" = aix; then
3017     arch_default=$(uname -p)
3018     strip_default="strip -X32_64"
3019 else
3020     arch_default=$(uname -m)
3021 fi
3022 cpu="generic"
3023 intrinsics="none"
3024
3025 # configurable options
3026 enable $PROGRAM_LIST
3027 enable $DOCUMENT_LIST
3028 enable $EXAMPLE_LIST
3029 enable $(filter_out avresample $LIBRARY_LIST)
3030 enable stripping
3031
3032 enable asm
3033 enable debug
3034 enable doc
3035 enable faan faandct faanidct
3036 enable optimizations
3037 enable runtime_cpudetect
3038 enable safe_bitstream_reader
3039 enable static
3040 enable swscale_alpha
3041 enable valgrind_backtrace
3042
3043 sws_max_filter_size_default=256
3044 set_default sws_max_filter_size
3045
3046 # Enable hwaccels by default.
3047 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3048 enable xlib
3049
3050 # build settings
3051 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3052 LIBPREF="lib"
3053 LIBSUF=".a"
3054 FULLNAME='$(NAME)$(BUILDSUF)'
3055 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3056 SLIBPREF="lib"
3057 SLIBSUF=".so"
3058 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3059 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3060 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3061 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3062 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3063 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3064
3065 asflags_filter=echo
3066 cflags_filter=echo
3067 ldflags_filter=echo
3068
3069 AS_C='-c'
3070 AS_O='-o $@'
3071 CC_C='-c'
3072 CC_E='-E -o $@'
3073 CC_O='-o $@'
3074 CXX_C='-c'
3075 CXX_O='-o $@'
3076 OBJCC_C='-c'
3077 OBJCC_E='-E -o $@'
3078 OBJCC_O='-o $@'
3079 LD_O='-o $@'
3080 LD_LIB='-l%'
3081 LD_PATH='-L'
3082 HOSTCC_C='-c'
3083 HOSTCC_E='-E -o $@'
3084 HOSTCC_O='-o $@'
3085 HOSTLD_O='-o $@'
3086
3087 host_libs='-lm'
3088 host_cflags_filter=echo
3089 host_ldflags_filter=echo
3090
3091 target_path='$(CURDIR)'
3092
3093 # since the object filename is not given with the -MM flag, the compiler
3094 # is only able to print the basename, and we must add the path ourselves
3095 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3096 DEPFLAGS='-MM'
3097
3098 # find source path
3099 if test -f configure; then
3100     source_path=.
3101 else
3102     source_path=$(cd $(dirname "$0"); pwd)
3103     case "$source_path" in
3104         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3105     esac
3106     test -e "$source_path/config.h" &&
3107         die "Out of tree builds are impossible with config.h in source dir."
3108 fi
3109
3110 for v in "$@"; do
3111     r=${v#*=}
3112     l=${v%"$r"}
3113     r=$(sh_quote "$r")
3114     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3115 done
3116
3117 find_things(){
3118     thing=$1
3119     pattern=$2
3120     file=$source_path/$3
3121     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3122 }
3123
3124 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3125 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3126 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3127 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3128 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3129 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3130 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3131 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3132 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3133 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3134 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3135
3136 ALL_COMPONENTS="
3137     $BSF_LIST
3138     $DECODER_LIST
3139     $DEMUXER_LIST
3140     $ENCODER_LIST
3141     $FILTER_LIST
3142     $HWACCEL_LIST
3143     $INDEV_LIST
3144     $MUXER_LIST
3145     $OUTDEV_LIST
3146     $PARSER_LIST
3147     $PROTOCOL_LIST
3148 "
3149
3150 for n in $COMPONENT_LIST; do
3151     v=$(toupper ${n%s})_LIST
3152     eval enable \$$v
3153     eval ${n}_if_any="\$$v"
3154 done
3155
3156 enable $ARCH_EXT_LIST
3157
3158 die_unknown(){
3159     echo "Unknown option \"$1\"."
3160     echo "See $0 --help for available options."
3161     exit 1
3162 }
3163
3164 print_in_columns() {
3165     cols=$(expr $ncols / 24)
3166     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3167 }
3168
3169 show_list() {
3170     suffix=_$1
3171     shift
3172     echo $* | sed s/$suffix//g | print_in_columns
3173     exit 0
3174 }
3175
3176 rand_list(){
3177     IFS=', '
3178     set -- $*
3179     unset IFS
3180     for thing; do
3181         comp=${thing%:*}
3182         prob=${thing#$comp}
3183         prob=${prob#:}
3184         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3185         echo "prob ${prob:-0.5}"
3186         printf '%s\n' $comp
3187     done
3188 }
3189
3190 do_random(){
3191     action=$1
3192     shift
3193     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3194     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3195 }
3196
3197 for opt do
3198     optval="${opt#*=}"
3199     case "$opt" in
3200         --extra-ldflags=*)
3201             add_ldflags $optval
3202         ;;
3203         --extra-ldexeflags=*)
3204             add_ldexeflags $optval
3205         ;;
3206         --extra-ldlibflags=*)
3207             add_ldlibflags $optval
3208         ;;
3209         --extra-libs=*)
3210             add_extralibs $optval
3211         ;;
3212         --disable-devices)
3213             disable $INDEV_LIST $OUTDEV_LIST
3214         ;;
3215         --enable-debug=*)
3216             debuglevel="$optval"
3217         ;;
3218         --disable-programs)
3219             disable $PROGRAM_LIST
3220         ;;
3221         --disable-everything)
3222             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3223         ;;
3224         --disable-all)
3225             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3226             disable $LIBRARY_LIST $PROGRAM_LIST doc
3227             enable avutil
3228         ;;
3229         --enable-random|--disable-random)
3230             action=${opt%%-random}
3231             do_random ${action#--} $COMPONENT_LIST
3232         ;;
3233         --enable-random=*|--disable-random=*)
3234             action=${opt%%-random=*}
3235             do_random ${action#--} $optval
3236         ;;
3237         --enable-*=*|--disable-*=*)
3238             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3239             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3240             eval list=\$$(toupper $thing)_LIST
3241             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3242             list=$(filter "$name" $list)
3243             [ "$list" = "" ] && warn "Option $opt did not match anything"
3244             $action $list
3245         ;;
3246         --enable-?*|--disable-?*)
3247             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3248             if is_in $option $COMPONENT_LIST; then
3249                 test $action = disable && action=unset
3250                 eval $action \$$(toupper ${option%s})_LIST
3251             elif is_in $option $CMDLINE_SELECT; then
3252                 $action $option
3253             else
3254                 die_unknown $opt
3255             fi
3256         ;;
3257         --list-*)
3258             NAME="${opt#--list-}"
3259             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3260             NAME=${NAME%s}
3261             eval show_list $NAME \$$(toupper $NAME)_LIST
3262         ;;
3263         --help|-h) show_help
3264         ;;
3265         --fatal-warnings) enable fatal_warnings
3266         ;;
3267         *)
3268             optname="${opt%%=*}"
3269             optname="${optname#--}"
3270             optname=$(echo "$optname" | sed 's/-/_/g')
3271             if is_in $optname $CMDLINE_SET; then
3272                 eval $optname='$optval'
3273             elif is_in $optname $CMDLINE_APPEND; then
3274                 append $optname "$optval"
3275             else
3276                 die_unknown $opt
3277             fi
3278         ;;
3279     esac
3280 done
3281
3282 for e in $env; do
3283     eval "export $e"
3284 done
3285
3286 disabled logging && logfile=/dev/null
3287
3288 # Disable all the library-specific components if the library itself
3289 # is disabled, see AVCODEC_LIST and following _LIST variables.
3290
3291 disable_components(){
3292     disabled ${1} && disable $(
3293         eval components="\$$(toupper ${1})_COMPONENTS"
3294         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3295     )
3296 }
3297
3298 map 'disable_components $v' $LIBRARY_LIST
3299
3300 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3301 set >> $logfile
3302
3303 test -n "$valgrind" && toolchain="valgrind-memcheck"
3304
3305 case "$toolchain" in
3306     *-asan)
3307         cc_default="${toolchain%-asan}"
3308         add_cflags  -fsanitize=address
3309         add_ldflags -fsanitize=address
3310     ;;
3311     *-tsan)
3312         cc_default="${toolchain%-tsan}"
3313         add_cflags  -fsanitize=thread -pie
3314         add_ldflags -fsanitize=thread -pie
3315         case "$toolchain" in
3316             gcc-tsan)
3317                 add_cflags  -fPIC
3318                 add_ldflags -fPIC
3319                 ;;
3320         esac
3321     ;;
3322     *-usan)
3323         cc_default="${toolchain%-usan}"
3324         add_cflags  -fsanitize=undefined
3325         add_ldflags -fsanitize=undefined
3326     ;;
3327     valgrind-*)
3328         target_exec_default="valgrind"
3329         case "$toolchain" in
3330             valgrind-massif)
3331                 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"
3332                 ;;
3333             valgrind-memcheck)
3334                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3335                 ;;
3336         esac
3337     ;;
3338     msvc)
3339         # Check whether the current MSVC version needs the C99 converter.
3340         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3341         # support enough of C99 to build ffmpeg. Default to the new
3342         # behaviour if the regexp was unable to match anything, since this
3343         # successfully parses the version number of existing supported
3344         # versions that require the converter (MSVC 2010 and 2012).
3345         cl_major_ver=$(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             -lx264)               echo libx264.lib ;;
3555             -l*)                  echo ${flag#-l}.lib ;;
3556             -LARGEADDRESSAWARE)   echo $flag ;;
3557             -L*)                  echo -libpath:${flag#-L} ;;
3558             *)                    echo $flag ;;
3559         esac
3560     done
3561 }
3562
3563 msvc_flags(){
3564     msvc_common_flags "$@"
3565     for flag; do
3566         case $flag in
3567             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3568                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3569                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3570                                        -wd4307 \
3571                                        -wd4273 -wd4554 -wd4701 ;;
3572         esac
3573     done
3574 }
3575
3576 icl_flags(){
3577     msvc_common_flags "$@"
3578     for flag; do
3579         case $flag in
3580             # Despite what Intel's documentation says -Wall, which is supported
3581             # on Windows, does enable remarks so disable them here.
3582             -Wall)                echo $flag -Qdiag-disable:remark ;;
3583             -std=c99)             echo -Qstd=c99 ;;
3584             -flto)                echo -ipo ;;
3585         esac
3586     done
3587 }
3588
3589 icc_flags(){
3590     for flag; do
3591         case $flag in
3592             -flto)                echo -ipo ;;
3593             *)                    echo $flag ;;
3594         esac
3595     done
3596 }
3597
3598 pgi_flags(){
3599     for flag; do
3600         case $flag in
3601             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3602             -fomit-frame-pointer) echo -Mnoframe ;;
3603             -g)                   echo -gopt ;;
3604             *)                    echo $flag ;;
3605         esac
3606     done
3607 }
3608
3609 suncc_flags(){
3610     for flag; do
3611         case $flag in
3612             -march=*|-mcpu=*)
3613                 case "${flag#*=}" in
3614                     native)                   echo -xtarget=native       ;;
3615                     v9|niagara)               echo -xarch=sparc          ;;
3616                     ultrasparc)               echo -xarch=sparcvis       ;;
3617                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3618                     i586|pentium)             echo -xchip=pentium        ;;
3619                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3620                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3621                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3622                     pentium4*)          echo -xtarget=pentium4           ;;
3623                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3624                     *-sse3)             echo -xarch=sse3                 ;;
3625                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3626                     bonnell)                   echo -xarch=ssse3         ;;
3627                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3628                     westmere)                  echo -xtarget=westmere    ;;
3629                     silvermont)                echo -xarch=sse4_2        ;;
3630                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3631                     core-avx*|ivybridge|haswell|broadwell)
3632                                                echo -xarch=avx           ;;
3633                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3634                     btver1)                    echo -xarch=amdsse4a      ;;
3635                     btver2|bdver*)             echo -xarch=avx           ;;
3636                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3637                     k8|opteron|athlon64|athlon-fx)
3638                                                echo -xarch=sse2a         ;;
3639                     athlon*)                   echo -xarch=pentium_proa  ;;
3640                 esac
3641                 ;;
3642             -std=c99)             echo -xc99              ;;
3643             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3644             -fPIC)                echo -KPIC -xcode=pic32 ;;
3645             -W*,*)                echo $flag              ;;
3646             -f*-*|-W*|-mimpure-text)                      ;;
3647             -shared)              echo -G                 ;;
3648             *)                    echo $flag              ;;
3649         esac
3650     done
3651 }
3652
3653 tms470_flags(){
3654     for flag; do
3655         case $flag in
3656             -march=*|-mcpu=*)
3657                 case "${flag#*=}" in
3658                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3659                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3660                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3661                     armv6*|arm11*)          echo -mv=6   ;;
3662                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3663                                             echo -mv=5e  ;;
3664                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3665                 esac
3666                 ;;
3667             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3668             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3669             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3670             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3671             -msoft-float)   echo --float_support=vfplib       ;;
3672             -O[0-3]|-mf=*)  echo $flag                        ;;
3673             -g)             echo -g -mn                       ;;
3674             -pds=*)         echo $flag                        ;;
3675             -D*|-I*)        echo $flag                        ;;
3676             --gcc|--abi=*)  echo $flag                        ;;
3677             -me)            echo $flag                        ;;
3678         esac
3679     done
3680 }
3681
3682 probe_cc(){
3683     pfx=$1
3684     _cc=$2
3685     first=$3
3686
3687     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3688     unset _ld_o _ldflags _ld_lib _ld_path
3689     unset _depflags _DEPCMD _DEPFLAGS
3690     _flags_filter=echo
3691
3692     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3693         true # no-op to avoid reading stdin in following checks
3694     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3695         _type=llvm_gcc
3696         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3697         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3698         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3699         _cflags_speed='-O3'
3700         _cflags_size='-Os'
3701     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3702         _type=gcc
3703         gcc_version=$($_cc --version | head -n1)
3704         gcc_basever=$($_cc -dumpversion)
3705         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3706         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3707         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3708         case $gcc_basever in
3709             2) ;;
3710             2.*) ;;
3711             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3712         esac
3713         if [ "$first" = true ]; then
3714             case $gcc_basever in
3715                 4.2*)
3716                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3717             esac
3718         fi
3719         _cflags_speed='-O3'
3720         _cflags_size='-Os'
3721     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3722         _type=icc
3723         _ident=$($_cc --version | head -n1)
3724         _depflags='-MMD'
3725         _cflags_speed='-O3'
3726         _cflags_size='-Os'
3727         _cflags_noopt='-O1'
3728         _flags_filter=icc_flags
3729     elif $_cc -v 2>&1 | grep -q xlc; then
3730         _type=xlc
3731         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3732         _cflags_speed='-O5'
3733         _cflags_size='-O5 -qcompact'
3734     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3735         _type=ccc
3736         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3737         _DEPFLAGS='-M'
3738         _cflags_speed='-fast'
3739         _cflags_size='-O1'
3740         _flags_filter=ccc_flags
3741     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3742         test -d "$sysroot" || die "No valid sysroot specified."
3743         _type=armcc
3744         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3745         armcc_conf="$PWD/armcc.conf"
3746         $_cc --arm_linux_configure                 \
3747              --arm_linux_config_file="$armcc_conf" \
3748              --configure_sysroot="$sysroot"        \
3749              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3750              die "Error creating armcc configuration file."
3751         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3752         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3753         as_default="${cross_prefix}gcc"
3754         _depflags='-MMD'
3755         _cflags_speed='-O3'
3756         _cflags_size='-Os'
3757     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3758         _type=tms470
3759         _ident=$($_cc -version | head -n1 | tr -s ' ')
3760         _flags='--gcc --abi=eabi -me'
3761         _cc_e='-ppl -fe=$@'
3762         _cc_o='-fe=$@'
3763         _depflags='-ppa -ppd=$(@:.o=.d)'
3764         _cflags_speed='-O3 -mf=5'
3765         _cflags_size='-O3 -mf=2'
3766         _flags_filter=tms470_flags
3767     elif $_cc -v 2>&1 | grep -q clang; then
3768         _type=clang
3769         _ident=$($_cc --version 2>/dev/null | head -n1)
3770         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3771         _cflags_speed='-O3'
3772         _cflags_size='-Os'
3773     elif $_cc -V 2>&1 | grep -q Sun; then
3774         _type=suncc
3775         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3776         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3777         _DEPFLAGS='-xM1 -xc99'
3778         _ldflags='-std=c99'
3779         _cflags_speed='-O5'
3780         _cflags_size='-O5 -xspace'
3781         _flags_filter=suncc_flags
3782     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3783         _type=pathscale
3784         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3785         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3786         _cflags_speed='-O2'
3787         _cflags_size='-Os'
3788         _flags_filter='filter_out -Wdisabled-optimization'
3789     elif $_cc -v 2>&1 | grep -q Open64; then
3790         _type=open64
3791         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3792         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3793         _cflags_speed='-O2'
3794         _cflags_size='-Os'
3795         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3796     elif $_cc -V 2>&1 | grep -q Portland; then
3797         _type=pgi
3798         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3799         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3800         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3801         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3802         _cflags_noopt="-O"
3803         _flags_filter=pgi_flags
3804     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3805         _type=armasm
3806         _ident=$($_cc | head -n1)
3807         # 4509: "This form of conditional instruction is deprecated"
3808         _flags="-nologo -ignore 4509"
3809         _flags_filter=armasm_flags
3810     elif $_cc 2>&1 | grep -q Intel; then
3811         _type=icl
3812         _ident=$($_cc 2>&1 | head -n1)
3813         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3814         # Not only is O3 broken on 13.x+ but it is slower on all previous
3815         # versions (tested) as well.
3816         _cflags_speed="-O2"
3817         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3818         if $_cc 2>&1 | grep -q Linker; then
3819             _ld_o='-out:$@'
3820         else
3821             _ld_o='-Fe$@'
3822         fi
3823         _cc_o='-Fo$@'
3824         _cc_e='-P'
3825         _flags_filter=icl_flags
3826         _ld_lib='lib%.a'
3827         _ld_path='-libpath:'
3828         # -Qdiag-error to make icl error when seeing certain unknown arguments
3829         _flags='-nologo -Qdiag-error:4044,10157'
3830         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3831         # with MSVC which enables it by default.
3832         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3833         disable stripping
3834     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3835         _type=msvc
3836         _ident=$($_cc 2>&1 | head -n1)
3837         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3838         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3839         _cflags_speed="-O2"
3840         _cflags_size="-O1"
3841         if $_cc -nologo- 2>&1 | grep -q Linker; then
3842             _ld_o='-out:$@'
3843         else
3844             _ld_o='-Fe$@'
3845         fi
3846         _cc_o='-Fo$@'
3847         _cc_e='-P -Fi$@'
3848         _flags_filter=msvc_flags
3849         _ld_lib='lib%.a'
3850         _ld_path='-libpath:'
3851         _flags='-nologo'
3852         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3853         disable stripping
3854     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3855         _type=cparser
3856         _ident=$($_cc --version | head -n1)
3857         _depflags='-MMD'
3858         _cflags_speed='-O4'
3859         _cflags_size='-O2'
3860         _flags_filter=cparser_flags
3861     fi
3862
3863     eval ${pfx}_type=\$_type
3864     eval ${pfx}_ident=\$_ident
3865 }
3866
3867 set_ccvars(){
3868     eval ${1}_C=\${_cc_c-\${${1}_C}}
3869     eval ${1}_E=\${_cc_e-\${${1}_E}}
3870     eval ${1}_O=\${_cc_o-\${${1}_O}}
3871
3872     if [ -n "$_depflags" ]; then
3873         eval ${1}_DEPFLAGS=\$_depflags
3874     else
3875         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3876         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3877         eval DEP${1}FLAGS=\$_flags
3878     fi
3879 }
3880
3881 probe_cc cc "$cc" "true"
3882 cflags_filter=$_flags_filter
3883 cflags_speed=$_cflags_speed
3884 cflags_size=$_cflags_size
3885 cflags_noopt=$_cflags_noopt
3886 add_cflags $_flags $_cflags
3887 cc_ldflags=$_ldflags
3888 set_ccvars CC
3889
3890 probe_cc hostcc "$host_cc"
3891 host_cflags_filter=$_flags_filter
3892 add_host_cflags  $_flags $_cflags
3893 set_ccvars HOSTCC
3894
3895 test -n "$cc_type" && enable $cc_type ||
3896     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3897
3898 : ${as_default:=$cc}
3899 : ${objcc_default:=$cc}
3900 : ${dep_cc_default:=$cc}
3901 : ${ld_default:=$cc}
3902 : ${host_ld_default:=$host_cc}
3903 set_default ar as objcc dep_cc ld host_ld windres
3904
3905 probe_cc as "$as"
3906 asflags_filter=$_flags_filter
3907 add_asflags $_flags $_cflags
3908 set_ccvars AS
3909
3910 probe_cc objcc "$objcc"
3911 objcflags_filter=$_flags_filter
3912 add_objcflags $_flags $_cflags
3913 set_ccvars OBJC
3914
3915 probe_cc ld "$ld"
3916 ldflags_filter=$_flags_filter
3917 add_ldflags $_flags $_ldflags
3918 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3919 LD_O=${_ld_o-$LD_O}
3920 LD_LIB=${_ld_lib-$LD_LIB}
3921 LD_PATH=${_ld_path-$LD_PATH}
3922
3923 probe_cc hostld "$host_ld"
3924 host_ldflags_filter=$_flags_filter
3925 add_host_ldflags $_flags $_ldflags
3926 HOSTLD_O=${_ld_o-$HOSTLD_O}
3927
3928 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3929     probe_cc depcc "$dep_cc"
3930     CCDEP=${_DEPCMD:-$DEPCMD}
3931     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3932     DEPCCFLAGS=$_flags
3933 fi
3934
3935 if $ar 2>&1 | grep -q Microsoft; then
3936     arflags="-nologo"
3937     ar_o='-out:$@'
3938 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3939     arflags="rq"
3940     ar_o='$@'
3941 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3942     arflags='-Xany -r -c'
3943     ar_o='$@'
3944 elif $ar 2>&1 | grep -q "\[D\] "; then
3945     arflags="rcD"
3946     ar_o='$@'
3947 else
3948     arflags="rc"
3949     ar_o='$@'
3950 fi
3951
3952 add_cflags $extra_cflags
3953 add_cxxflags $extra_cxxflags
3954 add_objcflags $extra_objcflags
3955 add_asflags $extra_cflags
3956
3957 if test -n "$sysroot"; then
3958     case "$cc_type" in
3959         gcc|llvm_gcc|clang)
3960             add_cppflags --sysroot="$sysroot"
3961             add_ldflags --sysroot="$sysroot"
3962 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3963             add_cppflags -isysroot "$sysroot"
3964             add_ldflags -isysroot "$sysroot"
3965         ;;
3966         tms470)
3967             add_cppflags -I"$sysinclude"
3968             add_ldflags  --sysroot="$sysroot"
3969         ;;
3970     esac
3971 fi
3972
3973 if test "$cpu" = host; then
3974     enabled cross_compile &&
3975         die "--cpu=host makes no sense when cross-compiling."
3976
3977     case "$cc_type" in
3978         gcc|llvm_gcc)
3979             check_native(){
3980                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3981                 sed -n "/cc1.*$1=/{
3982                             s/.*$1=\\([^ ]*\\).*/\\1/
3983                             p
3984                             q
3985                         }" $TMPE
3986             }
3987             cpu=$(check_native -march || check_native -mcpu)
3988         ;;
3989         clang)
3990             check_native(){
3991                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3992                 sed -n "/cc1.*-target-cpu /{
3993                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
3994                             p
3995                             q
3996                         }" $TMPE
3997             }
3998             cpu=$(check_native -march)
3999         ;;
4000     esac
4001
4002     test "${cpu:-host}" = host &&
4003         die "--cpu=host not supported with compiler $cc"
4004 fi
4005
4006 # Deal with common $arch aliases
4007 case "$arch" in
4008     aarch64|arm64)
4009         arch="aarch64"
4010     ;;
4011     arm*|iPad*|iPhone*)
4012         arch="arm"
4013     ;;
4014     mips*|IP*)
4015         case "$arch" in
4016         *el)
4017             add_cppflags -EL
4018             add_ldflags -EL
4019         ;;
4020         *eb)
4021             add_cppflags -EB
4022             add_ldflags -EB
4023         ;;
4024         esac
4025         arch="mips"
4026     ;;
4027     parisc*|hppa*)
4028         arch="parisc"
4029     ;;
4030     "Power Macintosh"|ppc*|powerpc*)
4031         arch="ppc"
4032     ;;
4033     s390|s390x)
4034         arch="s390"
4035     ;;
4036     sh4|sh)
4037         arch="sh4"
4038     ;;
4039     sun4u|sparc*)
4040         arch="sparc"
4041     ;;
4042     tilegx|tile-gx)
4043         arch="tilegx"
4044     ;;
4045     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4046         arch="x86"
4047     ;;
4048 esac
4049
4050 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4051 enable $arch
4052
4053 # Add processor-specific flags
4054 if enabled aarch64; then
4055
4056     case $cpu in
4057         armv*)
4058             cpuflags="-march=$cpu"
4059         ;;
4060         *)
4061             cpuflags="-mcpu=$cpu"
4062         ;;
4063     esac
4064
4065 elif enabled alpha; then
4066
4067     cpuflags="-mcpu=$cpu"
4068
4069 elif enabled arm; then
4070
4071     check_arm_arch() {
4072         check_cpp_condition stddef.h \
4073             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4074             $cpuflags
4075     }
4076
4077     probe_arm_arch() {
4078         if   check_arm_arch 4;        then echo armv4;
4079         elif check_arm_arch 4T;       then echo armv4t;
4080         elif check_arm_arch 5;        then echo armv5;
4081         elif check_arm_arch 5E;       then echo armv5e;
4082         elif check_arm_arch 5T;       then echo armv5t;
4083         elif check_arm_arch 5TE;      then echo armv5te;
4084         elif check_arm_arch 5TEJ;     then echo armv5te;
4085         elif check_arm_arch 6;        then echo armv6;
4086         elif check_arm_arch 6J;       then echo armv6j;
4087         elif check_arm_arch 6K;       then echo armv6k;
4088         elif check_arm_arch 6Z;       then echo armv6z;
4089         elif check_arm_arch 6ZK;      then echo armv6zk;
4090         elif check_arm_arch 6T2;      then echo armv6t2;
4091         elif check_arm_arch 7;        then echo armv7;
4092         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4093         elif check_arm_arch 7S;       then echo armv7-a;
4094         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4095         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4096         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4097         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4098         fi
4099     }
4100
4101     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4102
4103     case $cpu in
4104         armv*)
4105             cpuflags="-march=$cpu"
4106             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4107         ;;
4108         *)
4109             cpuflags="-mcpu=$cpu"
4110             case $cpu in
4111                 cortex-a*)                               subarch=armv7a  ;;
4112                 cortex-r*)                               subarch=armv7r  ;;
4113                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4114                 arm11*)                                  subarch=armv6   ;;
4115                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4116                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4117                 *)                             subarch=$(probe_arm_arch) ;;
4118             esac
4119         ;;
4120     esac
4121
4122     case "$subarch" in
4123         armv5t*)    enable fast_clz                ;;
4124         armv[6-8]*)
4125             enable fast_clz
4126             disabled fast_unaligned || enable fast_unaligned
4127             ;;
4128     esac
4129
4130 elif enabled avr32; then
4131
4132     case $cpu in
4133         ap7[02]0[0-2])
4134             subarch="avr32_ap"
4135             cpuflags="-mpart=$cpu"
4136         ;;
4137         ap)
4138             subarch="avr32_ap"
4139             cpuflags="-march=$cpu"
4140         ;;
4141         uc3[ab]*)
4142             subarch="avr32_uc"
4143             cpuflags="-mcpu=$cpu"
4144         ;;
4145         uc)
4146             subarch="avr32_uc"
4147             cpuflags="-march=$cpu"
4148         ;;
4149     esac
4150
4151 elif enabled bfin; then
4152
4153     cpuflags="-mcpu=$cpu"
4154
4155 elif enabled mips; then
4156
4157     cpuflags="-march=$cpu"
4158
4159     case $cpu in
4160         24kc)
4161             disable mips32r6
4162             disable mips64r2
4163             disable mips64r6
4164             disable mipsfpu
4165             disable mipsdsp
4166             disable mipsdspr2
4167             disable msa
4168         ;;
4169         24kf*)
4170             disable mips32r6
4171             disable mips64r2
4172             disable mips64r6
4173             disable mipsdsp
4174             disable mipsdspr2
4175             disable msa
4176         ;;
4177         24kec|34kc|1004kc)
4178             disable mips32r6
4179             disable mips64r2
4180             disable mips64r6
4181             disable mipsfpu
4182             disable mipsdspr2
4183             disable msa
4184         ;;
4185         24kef*|34kf*|1004kf*)
4186             disable mips32r6
4187             disable mips64r2
4188             disable mips64r6
4189             disable mipsdspr2
4190             disable msa
4191         ;;
4192         74kc)
4193             disable mips32r6
4194             disable mips64r2
4195             disable mips64r6
4196             disable mipsfpu
4197             disable msa
4198         ;;
4199         74kf)
4200             disable mips32r6
4201             disable mips64r2
4202             disable mips64r6
4203             disable msa
4204         ;;
4205         p5600)
4206             disable mips32r6
4207             disable mips64r2
4208             disable mips64r6
4209             disable mipsdsp
4210             disable mipsdspr2
4211             check_cflags "-mtune=p5600" &&
4212             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4213             add_asflags "-mfp64"
4214         ;;
4215         i6400)
4216             disable mips32r2
4217             disable mips32r6
4218             disable mips64r2
4219             disable mipsdsp
4220             disable mipsdspr2
4221             check_cflags "-mtune=i6400 -mabi=64" &&
4222             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4223             check_ldflags "-mabi=64" &&
4224             add_asflags "-mfp64"
4225         ;;
4226         loongson*)
4227             disable mips32r2
4228             disable mips32r6
4229             disable mips64r2
4230             disable mips64r6
4231             disable mipsfpu
4232             disable mipsdsp
4233             disable mipsdspr2
4234             disable msa
4235             enable local_aligned_8 local_aligned_16 local_aligned_32
4236             enable simd_align_16
4237             enable fast_64bit
4238             enable fast_clz
4239             enable fast_cmov
4240             enable fast_unaligned
4241             disable aligned_stack
4242             case $cpu in
4243                 loongson3*)
4244                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4245                 ;;
4246                 loongson2e)
4247                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4248                 ;;
4249                 loongson2f)
4250                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4251                 ;;
4252             esac
4253         ;;
4254         generic)
4255             disable mips64r6
4256             disable msa
4257         ;;
4258         *)
4259             # Unknown CPU. Disable everything.
4260             warn "unknown CPU. Disabling all MIPS optimizations."
4261             disable mipsfpu
4262             disable mips32r2
4263             disable mips32r6
4264             disable mips64r2
4265             disable mips64r6
4266             disable mipsdsp
4267             disable mipsdspr2
4268             disable msa
4269         ;;
4270     esac
4271
4272 elif enabled ppc; then
4273
4274     disable ldbrx
4275
4276     case $(tolower $cpu) in
4277         601|ppc601|powerpc601)
4278             cpuflags="-mcpu=601"
4279             disable altivec
4280         ;;
4281         603*|ppc603*|powerpc603*)
4282             cpuflags="-mcpu=603"
4283             disable altivec
4284         ;;
4285         604*|ppc604*|powerpc604*)
4286             cpuflags="-mcpu=604"
4287             disable altivec
4288         ;;
4289         g3|75*|ppc75*|powerpc75*)
4290             cpuflags="-mcpu=750"
4291             disable altivec
4292         ;;
4293         g4|745*|ppc745*|powerpc745*)
4294             cpuflags="-mcpu=7450"
4295             disable vsx
4296         ;;
4297         74*|ppc74*|powerpc74*)
4298             cpuflags="-mcpu=7400"
4299             disable vsx
4300         ;;
4301         g5|970|ppc970|powerpc970)
4302             cpuflags="-mcpu=970"
4303             disable vsx
4304         ;;
4305         power[3-6]*)
4306             cpuflags="-mcpu=$cpu"
4307             disable vsx
4308         ;;
4309         power[7-8]*)
4310             cpuflags="-mcpu=$cpu"
4311         ;;
4312         cell)
4313             cpuflags="-mcpu=cell"
4314             enable ldbrx
4315             disable vsx
4316         ;;
4317         e500mc)
4318             cpuflags="-mcpu=e500mc"
4319             disable altivec
4320         ;;
4321         e500v2)
4322             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4323             disable altivec
4324             disable dcbzl
4325         ;;
4326         e500)
4327             cpuflags="-mcpu=8540 -mhard-float"
4328             disable altivec
4329             disable dcbzl
4330         ;;
4331     esac
4332
4333 elif enabled sparc; then
4334
4335     case $cpu in
4336         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4337             cpuflags="-mcpu=$cpu"
4338         ;;
4339         ultrasparc*|niagara[234])
4340             cpuflags="-mcpu=$cpu"
4341         ;;
4342     esac
4343
4344 elif enabled x86; then
4345
4346     case $cpu in
4347         i[345]86|pentium)
4348             cpuflags="-march=$cpu"
4349             disable i686
4350             disable mmx
4351         ;;
4352         # targets that do NOT support nopl and conditional mov (cmov)
4353         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4354             cpuflags="-march=$cpu"
4355             disable i686
4356         ;;
4357         # targets that do support nopl and conditional mov (cmov)
4358         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4359         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4360             cpuflags="-march=$cpu"
4361             enable i686
4362             enable fast_cmov
4363         ;;
4364         # targets that do support conditional mov but on which it's slow
4365         pentium4|pentium4m|prescott|nocona)
4366             cpuflags="-march=$cpu"
4367             enable i686
4368             disable fast_cmov
4369         ;;
4370     esac
4371
4372 fi
4373
4374 if [ "$cpu" != generic ]; then
4375     add_cflags  $cpuflags
4376     add_asflags $cpuflags
4377     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4378 fi
4379
4380 # compiler sanity check
4381 check_exec <<EOF
4382 int main(void){ return 0; }
4383 EOF
4384 if test "$?" != 0; then
4385     echo "$cc is unable to create an executable file."
4386     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4387         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4388         echo "Only do this if you know what cross compiling means."
4389     fi
4390     die "C compiler test failed."
4391 fi
4392
4393 add_cppflags -D_ISOC99_SOURCE
4394 add_cxxflags -D__STDC_CONSTANT_MACROS
4395 check_cflags -std=c99
4396 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4397 #include <stdlib.h>
4398 EOF
4399 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4400 #include <stdlib.h>
4401 EOF
4402
4403 add_host_cppflags -D_ISOC99_SOURCE
4404 check_host_cflags -std=c99
4405 check_host_cflags -Wall
4406 check_host_cflags -O3
4407
4408 check_64bit(){
4409     arch32=$1
4410     arch64=$2
4411     expr=$3
4412     check_code cc "" "int test[2*($expr) - 1]" &&
4413         subarch=$arch64 || subarch=$arch32
4414 }
4415
4416 case "$arch" in
4417     aarch64|alpha|ia64)
4418         spic=$shared
4419     ;;
4420     mips)
4421         check_64bit mips mips64 '_MIPS_SIM > 1'
4422         spic=$shared
4423     ;;
4424     parisc)
4425         check_64bit parisc parisc64 'sizeof(void *) > 4'
4426         spic=$shared
4427     ;;
4428     ppc)
4429         check_64bit ppc ppc64 'sizeof(void *) > 4'
4430         spic=$shared
4431     ;;
4432     s390)
4433         check_64bit s390 s390x 'sizeof(void *) > 4'
4434         spic=$shared
4435     ;;
4436     sparc)
4437         check_64bit sparc sparc64 'sizeof(void *) > 4'
4438         spic=$shared
4439     ;;
4440     x86)
4441         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4442         # Treat x32 as x64 for now. Note it also needs spic=$shared
4443         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4444             subarch=x86_64
4445         if test "$subarch" = "x86_64"; then
4446             spic=$shared
4447         fi
4448     ;;
4449     ppc)
4450         check_cc <<EOF && subarch="ppc64"
4451         int test[(int)sizeof(char*) - 7];
4452 EOF
4453     ;;
4454 esac
4455
4456 enable $subarch
4457 enabled spic && enable_weak pic
4458
4459 # OS specific
4460 case $target_os in
4461     aix)
4462         SHFLAGS=-shared
4463         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4464         enabled shared && add_ldflags -Wl,-brtl
4465         ;;
4466     android)
4467         disable symver
4468         enable section_data_rel_ro
4469         SLIB_INSTALL_NAME='$(SLIBNAME)'
4470         SLIB_INSTALL_LINKS=
4471         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4472         ;;
4473     haiku)
4474         prefix_default="/boot/common"
4475         network_extralibs="-lnetwork"
4476         host_libs=
4477         ;;
4478     sunos)
4479         SHFLAGS='-shared -Wl,-h,$$(@F)'
4480         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4481         network_extralibs="-lsocket -lnsl"
4482         add_cppflags -D__EXTENSIONS__
4483         # When using suncc to build, the Solaris linker will mark
4484         # an executable with each instruction set encountered by
4485         # the Solaris assembler.  As our libraries contain their own
4486         # guards for processor-specific code, instead suppress
4487         # generation of the HWCAPS ELF section on Solaris x86 only.
4488         enabled_all suncc x86 &&
4489             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4490             add_ldflags -Wl,-M,mapfile
4491         nm_default='nm -P -g'
4492         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4493         ;;
4494     netbsd)
4495         disable symver
4496         oss_indev_extralibs="-lossaudio"
4497         oss_outdev_extralibs="-lossaudio"
4498         enabled gcc || check_ldflags -Wl,-zmuldefs
4499         ;;
4500     openbsd|bitrig)
4501         disable symver
4502         SHFLAGS='-shared'
4503         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4504         SLIB_INSTALL_LINKS=
4505         oss_indev_extralibs="-lossaudio"
4506         oss_outdev_extralibs="-lossaudio"
4507         ;;
4508     dragonfly)
4509         disable symver
4510         ;;
4511     freebsd)
4512         ;;
4513     bsd/os)
4514         add_extralibs -lpoll -lgnugetopt
4515         strip="strip -d"
4516         ;;
4517     darwin)
4518         enabled ppc && add_asflags -force_cpusubtype_ALL
4519         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4520         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4521         strip="${strip} -x"
4522         add_ldflags -Wl,-dynamic,-search_paths_first
4523         SLIBSUF=".dylib"
4524         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4525         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4526         objformat="macho"
4527         enabled x86_64 && objformat="macho64"
4528         enabled_any pic shared x86_64 ||
4529             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4530         ;;
4531     msys*)
4532         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4533         ;;
4534     mingw32*|mingw64*)
4535         if test $target_os = "mingw32ce"; then
4536             disable network
4537         else
4538             target_os=mingw32
4539         fi
4540         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4541         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4542         LIBTARGET=i386
4543         if enabled x86_64; then
4544             LIBTARGET="i386:x86-64"
4545         elif enabled arm; then
4546             LIBTARGET=arm-wince
4547         fi
4548         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4549         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4550         shlibdir_default="$bindir_default"
4551         SLIBPREF=""
4552         SLIBSUF=".dll"
4553         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4554         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4555         dlltool="${cross_prefix}dlltool"
4556         if check_cmd lib.exe -list; then
4557             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4558             if enabled x86_64; then
4559                 LIBTARGET=x64
4560             fi
4561         elif check_cmd $dlltool --version; then
4562             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4563         fi
4564         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4565         SLIB_INSTALL_LINKS=
4566         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4567         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4568         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4569         objformat="win32"
4570         ranlib=:
4571         enable dos_paths
4572         check_ldflags -Wl,--nxcompat,--dynamicbase
4573         # Lets work around some stupidity in binutils.
4574         # ld will strip relocations from executables even though we need them
4575         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4576         # however ld then forgets what the entry point should be (oops) so we
4577         # have to manually (re)set it.
4578         if enabled x86_32; then
4579             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4580         elif enabled x86_64; then
4581             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4582             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4583             # Set image base >4GB for extra entropy with HEASLR
4584             add_ldexeflags -Wl,--image-base,0x140000000
4585             append SHFLAGS -Wl,--image-base,0x180000000
4586         fi
4587         ;;
4588     win32|win64)
4589         disable symver
4590         if enabled shared; then
4591             # Link to the import library instead of the normal static library
4592             # for shared libs.
4593             LD_LIB='%.lib'
4594             # Cannot build both shared and static libs with MSVC or icl.
4595             disable static
4596         fi
4597         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4598         shlibdir_default="$bindir_default"
4599         SLIBPREF=""
4600         SLIBSUF=".dll"
4601         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4602         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4603         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4604         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4605         SLIB_INSTALL_LINKS=
4606         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4607         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4608         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4609         objformat="win32"
4610         ranlib=:
4611         enable dos_paths
4612         ;;
4613     cygwin*)
4614         target_os=cygwin
4615         shlibdir_default="$bindir_default"
4616         SLIBPREF="cyg"
4617         SLIBSUF=".dll"
4618         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4619         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4620         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4621         SLIB_INSTALL_LINKS=
4622         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4623         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4624         objformat="win32"
4625         enable dos_paths
4626         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4627         ;;
4628     *-dos|freedos|opendos)
4629         network_extralibs="-lsocket"
4630         objformat="coff"
4631         enable dos_paths
4632         add_cppflags -U__STRICT_ANSI__
4633         ;;
4634     linux)
4635         enable dv1394
4636         enable section_data_rel_ro
4637         ;;
4638     irix*)
4639         target_os=irix
4640         ranlib="echo ignoring ranlib"
4641         ;;
4642     os/2*)
4643         strip="lxlite -CS"
4644         ln_s="cp -f"
4645         objformat="aout"
4646         add_cppflags -D_GNU_SOURCE
4647         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4648         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4649         LIBSUF="_s.a"
4650         SLIBPREF=""
4651         SLIBSUF=".dll"
4652         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4653         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4654         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4655             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4656             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4657             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4658             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4659         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4660             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4661         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4662         enable dos_paths
4663         enable_weak os2threads
4664         ;;
4665     gnu/kfreebsd)
4666         add_cppflags -D_BSD_SOURCE
4667         ;;
4668     gnu)
4669         ;;
4670     qnx)
4671         add_cppflags -D_QNX_SOURCE
4672         network_extralibs="-lsocket"
4673         ;;
4674     symbian)
4675         SLIBSUF=".dll"
4676         enable dos_paths
4677         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4678         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4679         add_ldflags -Wl,--target1-abs,--no-undefined \
4680                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4681                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4682         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4683                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4684                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4685         ;;
4686     osf1)
4687         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4688         ;;
4689     minix)
4690         ;;
4691     plan9)
4692         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4693                      -D_REENTRANT_SOURCE        \
4694                      -D_RESEARCH_SOURCE         \
4695                      -DFD_SETSIZE=96            \
4696                      -DHAVE_SOCK_OPTS
4697         add_compat strtod.o strtod=avpriv_strtod
4698         network_extralibs='-lbsd'
4699         exeobjs=compat/plan9/main.o
4700         disable ffserver
4701         cp_f='cp'
4702         ;;
4703     none)
4704         ;;
4705     *)
4706         die "Unknown OS '$target_os'."
4707         ;;
4708 esac
4709
4710 # test if creating links works
4711 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4712 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4713 mkdir "$link_dest"
4714 $ln_s "$link_dest" "$link_name"
4715 touch "$link_dest/test_file"
4716 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4717     # create link to source path
4718     [ -e src ] && rm src
4719     $ln_s "$source_path" src
4720     source_link=src
4721 else
4722     # creating directory links doesn't work
4723     # fall back to using the full source path
4724     source_link="$source_path"
4725 fi
4726 # cleanup
4727 rm -r "$link_dest"
4728 rm -r "$link_name"
4729
4730 # determine libc flavour
4731
4732 probe_libc(){
4733     pfx=$1
4734     pfx_no_=${pfx%_}
4735     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4736     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4737         eval ${pfx}libc_type=uclibc
4738         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4739     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4740         eval ${pfx}libc_type=glibc
4741         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4742     # MinGW headers can be installed on Cygwin, so check for newlib first.
4743     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4744         eval ${pfx}libc_type=newlib
4745         add_${pfx}cppflags -U__STRICT_ANSI__
4746     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4747     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4748         eval ${pfx}libc_type=mingw64
4749         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4750             add_compat msvcrt/snprintf.o
4751             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4752         fi
4753         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4754         eval test \$${pfx_no_}cc_type = "gcc" &&
4755             add_${pfx}cppflags -D__printf__=__gnu_printf__
4756     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4757          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4758         eval ${pfx}libc_type=mingw32
4759         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4760             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4761             die "ERROR: MinGW32 runtime version must be >= 3.15."
4762         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4763         eval test \$${pfx_no_}cc_type = "gcc" &&
4764             add_${pfx}cppflags -D__printf__=__gnu_printf__
4765     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4766         eval ${pfx}libc_type=msvcrt
4767         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4768             if [ "$pfx" = host_ ]; then
4769                 add_host_cppflags -Dsnprintf=_snprintf
4770             else
4771                 add_compat strtod.o strtod=avpriv_strtod
4772                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4773                                              _snprintf=avpriv_snprintf  \
4774                                              vsnprintf=avpriv_vsnprintf
4775             fi
4776         fi
4777         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4778         # 0x601 by default unless something else is set by the user.
4779         # This can easily lead to us detecting functions only present
4780         # in such new versions and producing binaries requiring windows 7.0.
4781         # Therefore explicitly set the default to XP unless the user has
4782         # set something else on the command line.
4783         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4784         # family. For these cases, configure is free to use any functions
4785         # found in the SDK headers by default. (Alternatively, we could force
4786         # _WIN32_WINNT to 0x0602 in that case.)
4787         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4788             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4789 #ifdef WINAPI_FAMILY
4790 #include <winapifamily.h>
4791 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4792 #error not desktop
4793 #endif
4794 #endif
4795 EOF
4796     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4797         eval ${pfx}libc_type=klibc
4798     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4799         eval ${pfx}libc_type=bionic
4800     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4801         eval ${pfx}libc_type=solaris
4802         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4803     fi
4804     check_${pfx}cc <<EOF
4805 #include <time.h>
4806 void *v = localtime_r;
4807 EOF
4808 test "$?" != 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
4809 #include <time.h>
4810 void *v = localtime_r;
4811 EOF
4812
4813 }
4814
4815 probe_libc
4816 test -n "$libc_type" && enable libc_$libc_type
4817 probe_libc host_
4818 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4819
4820 case $libc_type in
4821     bionic)
4822         add_compat strtod.o strtod=avpriv_strtod
4823         ;;
4824 esac
4825
4826 # hacks for compiler/libc/os combinations
4827
4828 if enabled_all tms470 libc_glibc; then
4829     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4830     add_cppflags -D__USER_LABEL_PREFIX__=
4831     add_cppflags -D__builtin_memset=memset
4832     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4833     add_cflags   -pds=48    # incompatible redefinition of macro
4834 fi
4835
4836 if enabled_all ccc libc_glibc; then
4837     add_ldflags -Wl,-z,now  # calls to libots crash without this
4838 fi
4839
4840 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4841     add_cppflags '-I\$(SRC_PATH)/compat/float'
4842
4843 esc(){
4844     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4845 }
4846
4847 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4848
4849 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4850
4851 set_default libdir
4852 : ${shlibdir_default:="$libdir"}
4853 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4854
4855 set_default $PATHS_LIST
4856 set_default nm
4857
4858 # we need to build at least one lib type
4859 if ! enabled_any static shared; then
4860     cat <<EOF
4861 At least one library type must be built.
4862 Specify --enable-static to build the static libraries or --enable-shared to
4863 build the shared libraries as well. To only build the shared libraries specify
4864 --disable-static in addition to --enable-shared.
4865 EOF
4866     exit 1;
4867 fi
4868
4869 die_license_disabled() {
4870     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }