lavc/utils: use AVPixFmtDescriptor to probe palette formats
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
91   --enable-rpath           use rpath to allow installing libraries in paths
92                            not part of the dynamic linker search path
93                            use rpath when linking programs [USE WITH CARE]
94
95 Licensing options:
96   --enable-gpl             allow use of GPL code, the resulting libs
97                            and binaries will be under GPL [no]
98   --enable-version3        upgrade (L)GPL to version 3 [no]
99   --enable-nonfree         allow use of nonfree code, the resulting libs
100                            and binaries will be unredistributable [no]
101
102 Configuration options:
103   --disable-static         do not build static libraries [no]
104   --enable-shared          build shared libraries [no]
105   --enable-small           optimize for size instead of speed
106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
107   --enable-gray            enable full grayscale support (slower color)
108   --disable-swscale-alpha  disable alpha channel support in swscale
109   --disable-all            disable building components, libraries and programs
110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
111   --enable-raise-major     increase major version numbers in sonames [no]
112
113 Program options:
114   --disable-programs       do not build command line programs
115   --disable-ffmpeg         disable ffmpeg build
116   --disable-ffplay         disable ffplay build
117   --disable-ffprobe        disable ffprobe build
118   --disable-ffserver       disable ffserver build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Hardware accelerators:
152   --disable-d3d11va        disable D3D11VA code [autodetect]
153   --disable-dxva2          disable DXVA2 code [autodetect]
154   --disable-vaapi          disable VAAPI code [autodetect]
155   --disable-vda            disable VDA code [autodetect]
156   --disable-vdpau          disable VDPAU code [autodetect]
157   --enable-videotoolbox    enable VideoToolbox code [autodetect]
158
159 Individual component options:
160   --disable-everything     disable all components listed below
161   --disable-encoder=NAME   disable encoder NAME
162   --enable-encoder=NAME    enable encoder NAME
163   --disable-encoders       disable all encoders
164   --disable-decoder=NAME   disable decoder NAME
165   --enable-decoder=NAME    enable decoder NAME
166   --disable-decoders       disable all decoders
167   --disable-hwaccel=NAME   disable hwaccel NAME
168   --enable-hwaccel=NAME    enable hwaccel NAME
169   --disable-hwaccels       disable all hwaccels
170   --disable-muxer=NAME     disable muxer NAME
171   --enable-muxer=NAME      enable muxer NAME
172   --disable-muxers         disable all muxers
173   --disable-demuxer=NAME   disable demuxer NAME
174   --enable-demuxer=NAME    enable demuxer NAME
175   --disable-demuxers       disable all demuxers
176   --enable-parser=NAME     enable parser NAME
177   --disable-parser=NAME    disable parser NAME
178   --disable-parsers        disable all parsers
179   --enable-bsf=NAME        enable bitstream filter NAME
180   --disable-bsf=NAME       disable bitstream filter NAME
181   --disable-bsfs           disable all bitstream filters
182   --enable-protocol=NAME   enable protocol NAME
183   --disable-protocol=NAME  disable protocol NAME
184   --disable-protocols      disable all protocols
185   --enable-indev=NAME      enable input device NAME
186   --disable-indev=NAME     disable input device NAME
187   --disable-indevs         disable input devices
188   --enable-outdev=NAME     enable output device NAME
189   --disable-outdev=NAME    disable output device NAME
190   --disable-outdevs        disable output devices
191   --disable-devices        disable all devices
192   --enable-filter=NAME     enable filter NAME
193   --disable-filter=NAME    disable filter NAME
194   --disable-filters        disable all filters
195
196 External library support:
197   --enable-avisynth        enable reading of AviSynth script files [no]
198   --disable-bzlib          disable bzlib [autodetect]
199   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
200   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
201   --enable-frei0r          enable frei0r video filtering [no]
202   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
203                            if openssl, librtmp or gmp is not used [no]
204   --enable-gmp             enable gmp, needed for rtmp(t)e support
205                            if openssl or librtmp is not used [no]
206   --enable-gnutls          enable gnutls, needed for https support
207                            if openssl is not used [no]
208   --disable-iconv          disable iconv [autodetect]
209   --enable-ladspa          enable LADSPA audio filtering [no]
210   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
211   --enable-libass          enable libass subtitles rendering,
212                            needed for subtitles and ass filter [no]
213   --enable-libbluray       enable BluRay reading using libbluray [no]
214   --enable-libbs2b         enable bs2b DSP library [no]
215   --enable-libcaca         enable textual display using libcaca [no]
216   --enable-libcelt         enable CELT decoding via libcelt [no]
217   --enable-libcdio         enable audio CD grabbing with libcdio [no]
218   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
219                            and libraw1394 [no]
220   --enable-libdcadec       enable DCA decoding via libdcadec [no]
221   --enable-libfaac         enable AAC encoding via libfaac [no]
222   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
223   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
224   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
225   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
226   --enable-libgme          enable Game Music Emu via libgme [no]
227   --enable-libgsm          enable GSM de/encoding via libgsm [no]
228   --enable-libiec61883     enable iec61883 via libiec61883 [no]
229   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
230   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
231   --enable-libmfx          enable HW acceleration through libmfx
232   --enable-libmodplug      enable ModPlug via libmodplug [no]
233   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
234   --enable-libnut          enable NUT (de)muxing via libnut,
235                            native (de)muxer exists [no]
236   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
237   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
238   --enable-libopencv       enable video filtering via libopencv [no]
239   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
240   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
241   --enable-libopus         enable Opus de/encoding via libopus [no]
242   --enable-libpulse        enable Pulseaudio input via libpulse [no]
243   --enable-librubberband   enable rubberband needed for rubberband filter [no]
244   --enable-libquvi         enable quvi input via libquvi [no]
245   --enable-librtmp         enable RTMP[E] support via librtmp [no]
246   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
247   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
248   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
249   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
250   --enable-libsoxr         enable Include libsoxr resampling [no]
251   --enable-libspeex        enable Speex de/encoding via libspeex [no]
252   --enable-libssh          enable SFTP protocol via libssh [no]
253   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
254   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
255   --enable-libtheora       enable Theora encoding via libtheora [no]
256   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
257   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
258   --enable-libv4l2         enable libv4l2/v4l-utils [no]
259   --enable-libvidstab      enable video stabilization using vid.stab [no]
260   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
261   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
262   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
263                            native implementation exists [no]
264   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
265   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
266   --enable-libwebp         enable WebP encoding via libwebp [no]
267   --enable-libx264         enable H.264 encoding via x264 [no]
268   --enable-libx265         enable HEVC encoding via x265 [no]
269   --enable-libxavs         enable AVS encoding via xavs [no]
270   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
271   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
272   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
273   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
274   --enable-libxvid         enable Xvid encoding via xvidcore,
275                            native MPEG-4/Xvid encoder exists [no]
276   --enable-libzimg         enable z.lib, needed for zscale filter [no]
277   --enable-libzmq          enable message passing via libzmq [no]
278   --enable-libzvbi         enable teletext support via libzvbi [no]
279   --disable-lzma           disable lzma [autodetect]
280   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
281   --enable-mmal            enable decoding via MMAL [no]
282   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
283   --enable-nvenc           enable NVIDIA NVENC support [no]
284   --enable-openal          enable OpenAL 1.1 capture support [no]
285   --enable-opencl          enable OpenCL code
286   --enable-opengl          enable OpenGL rendering [no]
287   --enable-openssl         enable openssl, needed for https support
288                            if gnutls is not used [no]
289   --disable-schannel       disable SChannel SSP, needed for TLS support on
290                            Windows if openssl and gnutls are not used [autodetect]
291   --disable-sdl            disable sdl [autodetect]
292   --disable-securetransport disable Secure Transport, needed for TLS support
293                            on OSX if openssl and gnutls are not used [autodetect]
294   --enable-x11grab         enable X11 grabbing (legacy) [no]
295   --disable-xlib           disable xlib [autodetect]
296   --disable-zlib           disable zlib [autodetect]
297
298 Toolchain options:
299   --arch=ARCH              select architecture [$arch]
300   --cpu=CPU                select the minimum required CPU (affects
301                            instruction selection, may crash on older CPUs)
302   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
303   --progs-suffix=SUFFIX    program name suffix []
304   --enable-cross-compile   assume a cross-compiler is used
305   --sysroot=PATH           root of cross-build tree
306   --sysinclude=PATH        location of cross-build system headers
307   --target-os=OS           compiler targets OS [$target_os]
308   --target-exec=CMD        command to run executables on target
309   --target-path=DIR        path to view of build directory on target
310   --target-samples=DIR     path to samples directory on target
311   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
312   --toolchain=NAME         set tool defaults according to NAME
313   --nm=NM                  use nm tool NM [$nm_default]
314   --ar=AR                  use archive tool AR [$ar_default]
315   --as=AS                  use assembler AS [$as_default]
316   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
317   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
318   --cc=CC                  use C compiler CC [$cc_default]
319   --cxx=CXX                use C compiler CXX [$cxx_default]
320   --objcc=OCC              use ObjC compiler OCC [$cc_default]
321   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
322   --ld=LD                  use linker LD [$ld_default]
323   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
324   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
325   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
326   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
327   --host-cc=HOSTCC         use host C compiler HOSTCC
328   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
329   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
330   --host-ld=HOSTLD         use host linker HOSTLD
331   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
332   --host-libs=HLIBS        use libs HLIBS when linking for host
333   --host-os=OS             compiler host OS [$target_os]
334   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
335   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
336   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
337   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
338   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
339   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
340   --extra-libs=ELIBS       add ELIBS [$ELIBS]
341   --extra-version=STRING   version string suffix []
342   --optflags=OPTFLAGS      override optimization-related compiler flags
343   --build-suffix=SUFFIX    library name suffix []
344   --enable-pic             build position-independent code
345   --enable-thumb           compile for Thumb instruction set
346   --enable-lto             use link-time optimization
347   --env="ENV=override"     override the environment variables
348
349 Advanced options (experts only):
350   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
351   --custom-allocator=NAME  use a supported custom allocator
352   --disable-symver         disable symbol versioning
353   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
354   --disable-safe-bitstream-reader
355                            disable buffer boundary checking in bitreaders
356                            (faster, but may crash)
357   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
358   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
359
360 Optimization options (experts only):
361   --disable-asm            disable all assembly optimizations
362   --disable-altivec        disable AltiVec optimizations
363   --disable-vsx            disable VSX optimizations
364   --disable-power8         disable POWER8 optimizations
365   --disable-amd3dnow       disable 3DNow! optimizations
366   --disable-amd3dnowext    disable 3DNow! extended optimizations
367   --disable-mmx            disable MMX optimizations
368   --disable-mmxext         disable MMXEXT optimizations
369   --disable-sse            disable SSE optimizations
370   --disable-sse2           disable SSE2 optimizations
371   --disable-sse3           disable SSE3 optimizations
372   --disable-ssse3          disable SSSE3 optimizations
373   --disable-sse4           disable SSE4 optimizations
374   --disable-sse42          disable SSE4.2 optimizations
375   --disable-avx            disable AVX optimizations
376   --disable-xop            disable XOP optimizations
377   --disable-fma3           disable FMA3 optimizations
378   --disable-fma4           disable FMA4 optimizations
379   --disable-avx2           disable AVX2 optimizations
380   --disable-aesni          disable AESNI optimizations
381   --disable-armv5te        disable armv5te optimizations
382   --disable-armv6          disable armv6 optimizations
383   --disable-armv6t2        disable armv6t2 optimizations
384   --disable-vfp            disable VFP optimizations
385   --disable-neon           disable NEON optimizations
386   --disable-inline-asm     disable use of inline assembly
387   --disable-yasm           disable use of nasm/yasm assembly
388   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
389   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
390   --disable-msa            disable MSA optimizations
391   --disable-mipsfpu        disable floating point MIPS optimizations
392   --disable-mmi            disable Loongson SIMD optimizations
393   --disable-fast-unaligned consider unaligned accesses slow
394
395 Developer options (useful when working on FFmpeg itself):
396   --disable-debug          disable debugging symbols
397   --enable-debug=LEVEL     set the debug level [$debuglevel]
398   --disable-optimizations  disable compiler optimizations
399   --enable-extra-warnings  enable more compiler warnings
400   --disable-stripping      disable stripping of executables and shared libraries
401   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
402                            2 causes a slowdown at runtime.
403   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
404   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
405                            leaks and errors, using the specified valgrind binary.
406                            Cannot be combined with --target-exec
407   --enable-ftrapv          Trap arithmetic overflows
408   --samples=PATH           location of test samples for FATE, if not set use
409                            \$FATE_SAMPLES at make invocation time.
410   --enable-neon-clobber-test check NEON registers for clobbering (should be
411                            used only for debugging purposes)
412   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
413                            should be used only for debugging purposes)
414   --enable-random          randomly enable/disable components
415   --disable-random
416   --enable-random=LIST     randomly enable/disable specific components or
417   --disable-random=LIST    component groups. LIST is a comma-separated list
418                            of NAME[:PROB] entries where NAME is a component
419                            (group) and PROB the probability associated with
420                            NAME (default 0.5).
421   --random-seed=VALUE      seed value for --enable/disable-random
422   --disable-valgrind-backtrace do not print a backtrace under Valgrind
423                            (only applies to --disable-optimizations builds)
424
425 NOTE: Object files are built at the place where configure is launched.
426 EOF
427   exit 0
428 }
429
430 quotes='""'
431 if test -t 1 && which tput >/dev/null 2>&1; then
432     ncolors=$(tput colors)
433     if test -n "$ncolors" && test $ncolors -ge 8; then
434         bold_color=$(tput bold)
435         warn_color=$(tput setaf 3)
436         error_color=$(tput setaf 1)
437         reset_color=$(tput sgr0)
438     fi
439     # 72 used instead of 80 since that's the default of pr
440     ncols=$(tput cols)
441 fi
442 : ${ncols:=72}
443
444 log(){
445     echo "$@" >> $logfile
446 }
447
448 log_file(){
449     log BEGIN $1
450     pr -n -t $1 >> $logfile
451     log END $1
452 }
453
454 warn(){
455     log "WARNING: $*"
456     WARNINGS="${WARNINGS}WARNING: $*\n"
457 }
458
459 die(){
460     log "$@"
461     echo "$error_color$bold_color$@$reset_color"
462     cat <<EOF
463
464 If you think configure made a mistake, make sure you are using the latest
465 version from Git.  If the latest version fails, report the problem to the
466 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
467 EOF
468     if disabled logging; then
469         cat <<EOF
470 Rerun configure with logging enabled (do not use --disable-logging), and
471 include the log this produces with your report.
472 EOF
473     else
474         cat <<EOF
475 Include the log file "$logfile" produced by configure as this will help
476 solve the problem.
477 EOF
478     fi
479     exit 1
480 }
481
482 # Avoid locale weirdness, besides we really just want to translate ASCII.
483 toupper(){
484     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
485 }
486
487 tolower(){
488     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
489 }
490
491 c_escape(){
492     echo "$*" | sed 's/["\\]/\\\0/g'
493 }
494
495 sh_quote(){
496     v=$(echo "$1" | sed "s/'/'\\\\''/g")
497     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
498     echo "$v"
499 }
500
501 cleanws(){
502     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
503 }
504
505 filter(){
506     pat=$1
507     shift
508     for v; do
509         eval "case $v in $pat) echo $v ;; esac"
510     done
511 }
512
513 filter_out(){
514     pat=$1
515     shift
516     for v; do
517         eval "case $v in $pat) ;; *) echo $v ;; esac"
518     done
519 }
520
521 map(){
522     m=$1
523     shift
524     for v; do eval $m; done
525 }
526
527 add_suffix(){
528     suffix=$1
529     shift
530     for v; do echo ${v}${suffix}; done
531 }
532
533 set_all(){
534     value=$1
535     shift
536     for var in $*; do
537         eval $var=$value
538     done
539 }
540
541 set_weak(){
542     value=$1
543     shift
544     for var; do
545         eval : \${$var:=$value}
546     done
547 }
548
549 sanitize_var_name(){
550     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
551 }
552
553 set_safe(){
554     var=$1
555     shift
556     eval $(sanitize_var_name "$var")='$*'
557 }
558
559 get_safe(){
560     eval echo \$$(sanitize_var_name "$1")
561 }
562
563 pushvar(){
564     for pvar in $*; do
565         eval level=\${${pvar}_level:=0}
566         eval ${pvar}_${level}="\$$pvar"
567         eval ${pvar}_level=$(($level+1))
568     done
569 }
570
571 popvar(){
572     for pvar in $*; do
573         eval level=\${${pvar}_level:-0}
574         test $level = 0 && continue
575         eval level=$(($level-1))
576         eval $pvar="\${${pvar}_${level}}"
577         eval ${pvar}_level=$level
578         eval unset ${pvar}_${level}
579     done
580 }
581
582 enable(){
583     set_all yes $*
584 }
585
586 disable(){
587     set_all no $*
588 }
589
590 enable_weak(){
591     set_weak yes $*
592 }
593
594 disable_weak(){
595     set_weak no $*
596 }
597
598 enable_safe(){
599     for var; do
600         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
601     done
602 }
603
604 disable_safe(){
605     for var; do
606         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
607     done
608 }
609
610 do_enable_deep(){
611     for var; do
612         enabled $var && continue
613         eval sel="\$${var}_select"
614         eval sgs="\$${var}_suggest"
615         pushvar var sgs
616         enable_deep $sel
617         popvar sgs
618         enable_deep_weak $sgs
619         popvar var
620     done
621 }
622
623 enable_deep(){
624     do_enable_deep $*
625     enable $*
626 }
627
628 enable_deep_weak(){
629     for var; do
630         disabled $var && continue
631         pushvar var
632         do_enable_deep $var
633         popvar var
634         enable_weak $var
635     done
636 }
637
638 enabled(){
639     test "${1#!}" = "$1" && op='=' || op=!=
640     eval test "x\$${1#!}" $op "xyes"
641 }
642
643 disabled(){
644     test "${1#!}" = "$1" && op='=' || op=!=
645     eval test "x\$${1#!}" $op "xno"
646 }
647
648 enabled_all(){
649     for opt; do
650         enabled $opt || return 1
651     done
652 }
653
654 disabled_all(){
655     for opt; do
656         disabled $opt || return 1
657     done
658 }
659
660 enabled_any(){
661     for opt; do
662         enabled $opt && return 0
663     done
664 }
665
666 disabled_any(){
667     for opt; do
668         disabled $opt && return 0
669     done
670     return 1
671 }
672
673 set_default(){
674     for opt; do
675         eval : \${$opt:=\$${opt}_default}
676     done
677 }
678
679 is_in(){
680     value=$1
681     shift
682     for var in $*; do
683         [ $var = $value ] && return 0
684     done
685     return 1
686 }
687
688 do_check_deps(){
689     for cfg; do
690         cfg="${cfg#!}"
691         enabled ${cfg}_checking && die "Circular dependency for $cfg."
692         disabled ${cfg}_checking && continue
693         enable ${cfg}_checking
694         append allopts $cfg
695
696         eval dep_all="\$${cfg}_deps"
697         eval dep_any="\$${cfg}_deps_any"
698         eval dep_sel="\$${cfg}_select"
699         eval dep_sgs="\$${cfg}_suggest"
700         eval dep_ifa="\$${cfg}_if"
701         eval dep_ifn="\$${cfg}_if_any"
702
703         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
704         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
705         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
706
707         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
708         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
709         enabled_all  $dep_all || disable $cfg
710         enabled_any  $dep_any || disable $cfg
711         disabled_any $dep_sel && disable $cfg
712
713         if enabled $cfg; then
714             enable_deep $dep_sel
715             enable_deep_weak $dep_sgs
716         fi
717
718         disable ${cfg}_checking
719     done
720 }
721
722 check_deps(){
723     unset allopts
724
725     do_check_deps "$@"
726
727     for cfg in $allopts; do
728         enabled $cfg || continue
729         eval dep_extralibs="\$${cfg}_extralibs"
730         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
731     done
732 }
733
734 print_config(){
735     pfx=$1
736     files=$2
737     shift 2
738     map 'eval echo "$v \${$v:-no}"' "$@" |
739     awk "BEGIN { split(\"$files\", files) }
740         {
741             c = \"$pfx\" toupper(\$1);
742             v = \$2;
743             sub(/yes/, 1, v);
744             sub(/no/,  0, v);
745             for (f in files) {
746                 file = files[f];
747                 if (file ~ /\\.h\$/) {
748                     printf(\"#define %s %d\\n\", c, v) >>file;
749                 } else if (file ~ /\\.asm\$/) {
750                     printf(\"%%define %s %d\\n\", c, v) >>file;
751                 } else if (file ~ /\\.mak\$/) {
752                     n = -v ? \"\" : \"!\";
753                     printf(\"%s%s=yes\\n\", n, c) >>file;
754                 } else if (file ~ /\\.texi\$/) {
755                     pre = -v ? \"\" : \"@c \";
756                     yesno = \$2;
757                     c2 = tolower(c);
758                     gsub(/_/, \"-\", c2);
759                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
760                 }
761             }
762         }"
763 }
764
765 print_enabled(){
766     suf=$1
767     shift
768     for v; do
769         enabled $v && printf "%s\n" ${v%$suf};
770     done
771 }
772
773 append(){
774     var=$1
775     shift
776     eval "$var=\"\$$var $*\""
777 }
778
779 prepend(){
780     var=$1
781     shift
782     eval "$var=\"$* \$$var\""
783 }
784
785 unique(){
786     var=$1
787     uniq_list=""
788     for tok in $(eval echo \$$var); do
789         uniq_list="$(filter_out $tok $uniq_list) $tok"
790     done
791     eval "$var=\"${uniq_list}\""
792 }
793
794 add_cppflags(){
795     append CPPFLAGS "$@"
796 }
797
798 add_cflags(){
799     append CFLAGS $($cflags_filter "$@")
800 }
801
802 add_cxxflags(){
803     append CXXFLAGS $($cflags_filter "$@")
804 }
805
806 add_asflags(){
807     append ASFLAGS $($asflags_filter "$@")
808 }
809
810 add_objcflags(){
811     append OBJCFLAGS $($objcflags_filter "$@")
812 }
813
814 add_ldflags(){
815     append LDFLAGS $($ldflags_filter "$@")
816 }
817
818 add_ldexeflags(){
819     append LDEXEFLAGS $($ldflags_filter "$@")
820 }
821
822 add_ldlibflags(){
823     append LDLIBFLAGS $($ldflags_filter "$@")
824 }
825
826 add_stripflags(){
827     append ASMSTRIPFLAGS "$@"
828 }
829
830 add_extralibs(){
831     prepend extralibs $($ldflags_filter "$@")
832 }
833
834 add_host_cppflags(){
835     append host_cppflags "$@"
836 }
837
838 add_host_cflags(){
839     append host_cflags $($host_cflags_filter "$@")
840 }
841
842 add_host_ldflags(){
843     append host_ldflags $($host_ldflags_filter "$@")
844 }
845
846 add_compat(){
847     append compat_objs $1
848     shift
849     map 'add_cppflags -D$v' "$@"
850 }
851
852 check_cmd(){
853     log "$@"
854     "$@" >> $logfile 2>&1
855 }
856
857 check_stat(){
858     log check_stat "$@"
859     stat "$1" >> $logfile 2>&1
860 }
861
862 cc_o(){
863     eval printf '%s\\n' $CC_O
864 }
865
866 cc_e(){
867     eval printf '%s\\n' $CC_E
868 }
869
870 check_cc(){
871     log check_cc "$@"
872     cat > $TMPC
873     log_file $TMPC
874     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
875 }
876
877 check_cxx(){
878     log check_cxx "$@"
879     cat > $TMPCPP
880     log_file $TMPCPP
881     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
882 }
883
884 check_objcc(){
885     log check_objcc "$@"
886     cat > $TMPM
887     log_file $TMPM
888     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
889 }
890
891 check_cpp(){
892     log check_cpp "$@"
893     cat > $TMPC
894     log_file $TMPC
895     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
896 }
897
898 as_o(){
899     eval printf '%s\\n' $AS_O
900 }
901
902 check_as(){
903     log check_as "$@"
904     cat > $TMPS
905     log_file $TMPS
906     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
907 }
908
909 check_inline_asm(){
910     log check_inline_asm "$@"
911     name="$1"
912     code="$2"
913     shift 2
914     disable $name
915     check_cc "$@" <<EOF && enable $name
916 void foo(void){ __asm__ volatile($code); }
917 EOF
918 }
919
920 check_insn(){
921     log check_insn "$@"
922     check_inline_asm ${1}_inline "\"$2\""
923     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
924 }
925
926 check_yasm(){
927     log check_yasm "$@"
928     echo "$1" > $TMPS
929     log_file $TMPS
930     shift 1
931     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
932 }
933
934 ld_o(){
935     eval printf '%s\\n' $LD_O
936 }
937
938 check_ld(){
939     log check_ld "$@"
940     type=$1
941     shift 1
942     flags=$(filter_out '-l*|*.so' $@)
943     libs=$(filter '-l*|*.so' $@)
944     check_$type $($cflags_filter $flags) || return
945     flags=$($ldflags_filter $flags)
946     libs=$($ldflags_filter $libs)
947     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
948 }
949
950 print_include(){
951     hdr=$1
952     test "${hdr%.h}" = "${hdr}" &&
953         echo "#include $hdr"    ||
954         echo "#include <$hdr>"
955 }
956
957 check_code(){
958     log check_code "$@"
959     check=$1
960     headers=$2
961     code=$3
962     shift 3
963     {
964         for hdr in $headers; do
965             print_include $hdr
966         done
967         echo "int main(void) { $code; return 0; }"
968     } | check_$check "$@"
969 }
970
971 check_cppflags(){
972     log check_cppflags "$@"
973     check_cc "$@" <<EOF && append CPPFLAGS "$@"
974 int x;
975 EOF
976 }
977
978 test_cflags(){
979     log test_cflags "$@"
980     set -- $($cflags_filter "$@")
981     check_cc "$@" <<EOF
982 int x;
983 EOF
984 }
985
986 check_cflags(){
987     log check_cflags "$@"
988     test_cflags "$@" && add_cflags "$@"
989 }
990
991 check_cxxflags(){
992     log check_cxxflags "$@"
993     set -- $($cflags_filter "$@")
994     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
995 int x;
996 EOF
997 }
998
999 test_objcflags(){
1000     log test_cflags "$@"
1001     set -- $($cflags_filter "$@")
1002     check_objcc "$@" <<EOF
1003 int x;
1004 EOF
1005 }
1006
1007 check_objcflags(){
1008     log check_cflags "$@"
1009     test_objcflags "$@" && add_objcflags "$@"
1010 }
1011
1012 test_ldflags(){
1013     log test_ldflags "$@"
1014     check_ld "cc" "$@" <<EOF
1015 int main(void){ return 0; }
1016 EOF
1017 }
1018
1019 check_ldflags(){
1020     log check_ldflags "$@"
1021     test_ldflags "$@" && add_ldflags "$@"
1022 }
1023
1024 test_stripflags(){
1025     log test_stripflags "$@"
1026     # call check_cc to get a fresh TMPO
1027     check_cc <<EOF
1028 int main(void) { return 0; }
1029 EOF
1030     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1031 }
1032
1033 check_stripflags(){
1034     log check_stripflags "$@"
1035     test_stripflags "$@" && add_stripflags "$@"
1036 }
1037
1038 check_header(){
1039     log check_header "$@"
1040     header=$1
1041     shift
1042     disable_safe $header
1043     check_cpp "$@" <<EOF && enable_safe $header
1044 #include <$header>
1045 int x;
1046 EOF
1047 }
1048
1049 check_header_objcc(){
1050     log check_header_objcc "$@"
1051     rm -f -- "$TMPO"
1052     header=$1
1053     shift
1054     disable_safe $header
1055     {
1056        echo "#include <$header>"
1057        echo "int main(void) { return 0; }"
1058     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1059 }
1060
1061 check_func(){
1062     log check_func "$@"
1063     func=$1
1064     shift
1065     disable $func
1066     check_ld "cc" "$@" <<EOF && enable $func
1067 extern int $func();
1068 int main(void){ $func(); }
1069 EOF
1070 }
1071
1072 check_complexfunc(){
1073     log check_complexfunc "$@"
1074     func=$1
1075     narg=$2
1076     shift 2
1077     test $narg = 2 && args="f, g" || args="f * I"
1078     disable $func
1079     check_ld "cc" "$@" <<EOF && enable $func
1080 #include <complex.h>
1081 #include <math.h>
1082 float foo(complex float f, complex float g) { return $func($args); }
1083 int main(void){ return (int) foo; }
1084 EOF
1085 }
1086
1087 check_mathfunc(){
1088     log check_mathfunc "$@"
1089     func=$1
1090     narg=$2
1091     shift 2
1092     test $narg = 2 && args="f, g" || args="f"
1093     disable $func
1094     check_ld "cc" "$@" <<EOF && enable $func
1095 #include <math.h>
1096 float foo(float f, float g) { return $func($args); }
1097 int main(void){ return (int) foo; }
1098 EOF
1099 }
1100
1101 check_func_headers(){
1102     log check_func_headers "$@"
1103     headers=$1
1104     funcs=$2
1105     shift 2
1106     {
1107         for hdr in $headers; do
1108             print_include $hdr
1109         done
1110         for func in $funcs; do
1111             echo "long check_$func(void) { return (long) $func; }"
1112         done
1113         echo "int main(void) { return 0; }"
1114     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1115 }
1116
1117 check_class_headers_cpp(){
1118     log check_class_headers_cpp "$@"
1119     headers=$1
1120     classes=$2
1121     shift 2
1122     {
1123         for hdr in $headers; do
1124             echo "#include <$hdr>"
1125         done
1126         echo "int main(void) { "
1127         i=1
1128         for class in $classes; do
1129             echo "$class obj$i;"
1130             i=$(expr $i + 1)
1131         done
1132         echo "return 0; }"
1133     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1134 }
1135
1136 check_cpp_condition(){
1137     log check_cpp_condition "$@"
1138     header=$1
1139     condition=$2
1140     shift 2
1141     check_cpp "$@" <<EOF
1142 #include <$header>
1143 #if !($condition)
1144 #error "unsatisfied condition: $condition"
1145 #endif
1146 EOF
1147 }
1148
1149 check_lib(){
1150     log check_lib "$@"
1151     header="$1"
1152     func="$2"
1153     shift 2
1154     check_header $header && check_func $func "$@" && add_extralibs "$@"
1155 }
1156
1157 check_lib2(){
1158     log check_lib2 "$@"
1159     headers="$1"
1160     funcs="$2"
1161     shift 2
1162     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1163 }
1164
1165 check_lib_cpp(){
1166     log check_lib_cpp "$@"
1167     headers="$1"
1168     classes="$2"
1169     shift 2
1170     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1171 }
1172
1173 check_pkg_config(){
1174     log check_pkg_config "$@"
1175     pkgandversion="$1"
1176     pkg="${1%% *}"
1177     headers="$2"
1178     funcs="$3"
1179     shift 3
1180     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1181     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1182     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1183     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1184         set_safe "${pkg}_cflags" $pkg_cflags   &&
1185         set_safe "${pkg}_libs"   $pkg_libs
1186 }
1187
1188 check_exec(){
1189     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1190 }
1191
1192 check_exec_crash(){
1193     code=$(cat)
1194
1195     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1196     # are safe but may not be available everywhere.  Thus we use
1197     # raise(SIGTERM) instead.  The check is run in a subshell so we
1198     # can redirect the "Terminated" message from the shell.  SIGBUS
1199     # is not defined by standard C so it is used conditionally.
1200
1201     (check_exec "$@") >> $logfile 2>&1 <<EOF
1202 #include <signal.h>
1203 static void sighandler(int sig){
1204     raise(SIGTERM);
1205 }
1206 int foo(void){
1207     $code
1208 }
1209 int (*func_ptr)(void) = foo;
1210 int main(void){
1211     signal(SIGILL, sighandler);
1212     signal(SIGFPE, sighandler);
1213     signal(SIGSEGV, sighandler);
1214 #ifdef SIGBUS
1215     signal(SIGBUS, sighandler);
1216 #endif
1217     return func_ptr();
1218 }
1219 EOF
1220 }
1221
1222 check_type(){
1223     log check_type "$@"
1224     headers=$1
1225     type=$2
1226     shift 2
1227     disable_safe "$type"
1228     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1229 }
1230
1231 check_struct(){
1232     log check_struct "$@"
1233     headers=$1
1234     struct=$2
1235     member=$3
1236     shift 3
1237     disable_safe "${struct}_${member}"
1238     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1239         enable_safe "${struct}_${member}"
1240 }
1241
1242 check_builtin(){
1243     log check_builtin "$@"
1244     name=$1
1245     headers=$2
1246     builtin=$3
1247     shift 3
1248     disable "$name"
1249     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1250 }
1251
1252 check_compile_assert(){
1253     log check_compile_assert "$@"
1254     name=$1
1255     headers=$2
1256     condition=$3
1257     shift 3
1258     disable "$name"
1259     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1260 }
1261
1262 require(){
1263     name="$1"
1264     header="$2"
1265     func="$3"
1266     shift 3
1267     check_lib $header $func "$@" || die "ERROR: $name not found"
1268 }
1269
1270 require2(){
1271     name="$1"
1272     headers="$2"
1273     func="$3"
1274     shift 3
1275     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1276 }
1277
1278 require_cpp(){
1279     name="$1"
1280     headers="$2"
1281     classes="$3"
1282     shift 3
1283     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1284 }
1285
1286 use_pkg_config(){
1287     pkg="$1"
1288     check_pkg_config "$@" || return 1
1289     add_cflags    $(get_safe "${pkg}_cflags")
1290     add_extralibs $(get_safe "${pkg}_libs")
1291 }
1292
1293 require_pkg_config(){
1294     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1295 }
1296
1297 require_libfreetype(){
1298     log require_libfreetype "$@"
1299     pkg="freetype2"
1300     check_cmd $pkg_config --exists --print-errors $pkg \
1301       || die "ERROR: $pkg not found"
1302     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1303     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1304     {
1305         echo "#include <ft2build.h>"
1306         echo "#include FT_FREETYPE_H"
1307         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1308         echo "int main(void) { return 0; }"
1309     } | check_ld "cc" $pkg_cflags $pkg_libs \
1310       && set_safe "${pkg}_cflags" $pkg_cflags \
1311       && set_safe "${pkg}_libs"   $pkg_libs \
1312       || die "ERROR: $pkg not found"
1313     add_cflags    $(get_safe "${pkg}_cflags")
1314     add_extralibs $(get_safe "${pkg}_libs")
1315 }
1316
1317 hostcc_e(){
1318     eval printf '%s\\n' $HOSTCC_E
1319 }
1320
1321 hostcc_o(){
1322     eval printf '%s\\n' $HOSTCC_O
1323 }
1324
1325 check_host_cc(){
1326     log check_host_cc "$@"
1327     cat > $TMPC
1328     log_file $TMPC
1329     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1330 }
1331
1332 check_host_cpp(){
1333     log check_host_cpp "$@"
1334     cat > $TMPC
1335     log_file $TMPC
1336     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1337 }
1338
1339 check_host_cppflags(){
1340     log check_host_cppflags "$@"
1341     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1342 int x;
1343 EOF
1344 }
1345
1346 check_host_cflags(){
1347     log check_host_cflags "$@"
1348     set -- $($host_cflags_filter "$@")
1349     check_host_cc "$@" <<EOF && append host_cflags "$@"
1350 int x;
1351 EOF
1352 }
1353
1354 check_host_cpp_condition(){
1355     log check_host_cpp_condition "$@"
1356     header=$1
1357     condition=$2
1358     shift 2
1359     check_host_cpp "$@" <<EOF
1360 #include <$header>
1361 #if !($condition)
1362 #error "unsatisfied condition: $condition"
1363 #endif
1364 EOF
1365 }
1366
1367 cp_if_changed(){
1368     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1369     mkdir -p "$(dirname $2)"
1370     $cp_f "$1" "$2"
1371 }
1372
1373 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1374 # system-dependent things.
1375
1376 AVCODEC_COMPONENTS="
1377     bsfs
1378     decoders
1379     encoders
1380     hwaccels
1381     parsers
1382 "
1383
1384 AVDEVICE_COMPONENTS="
1385     indevs
1386     outdevs
1387 "
1388 AVFILTER_COMPONENTS="
1389     filters
1390 "
1391 AVFORMAT_COMPONENTS="
1392     demuxers
1393     muxers
1394     protocols
1395 "
1396
1397 AVRESAMPLE_COMPONENTS=""
1398 AVUTIL_COMPONENTS=""
1399
1400 COMPONENT_LIST="
1401     $AVCODEC_COMPONENTS
1402     $AVDEVICE_COMPONENTS
1403     $AVFILTER_COMPONENTS
1404     $AVFORMAT_COMPONENTS
1405     $AVRESAMPLE_COMPONENTS
1406     $AVUTIL_COMPONENTS
1407 "
1408
1409 EXAMPLE_LIST="
1410     avio_reading_example
1411     avio_dir_cmd_example
1412     decoding_encoding_example
1413     demuxing_decoding_example
1414     extract_mvs_example
1415     filter_audio_example
1416     filtering_audio_example
1417     filtering_video_example
1418     metadata_example
1419     muxing_example
1420     qsvdec_example
1421     remuxing_example
1422     resampling_audio_example
1423     scaling_video_example
1424     transcode_aac_example
1425     transcoding_example
1426 "
1427
1428 EXTERNAL_LIBRARY_LIST="
1429     avisynth
1430     bzlib
1431     chromaprint
1432     crystalhd
1433     decklink
1434     frei0r
1435     gcrypt
1436     gmp
1437     gnutls
1438     iconv
1439     ladspa
1440     libaacplus
1441     libass
1442     libbluray
1443     libbs2b
1444     libcaca
1445     libcdio
1446     libcelt
1447     libdc1394
1448     libdcadec
1449     libfaac
1450     libfdk_aac
1451     libflite
1452     libfontconfig
1453     libfreetype
1454     libfribidi
1455     libgme
1456     libgsm
1457     libiec61883
1458     libilbc
1459     libkvazaar
1460     libmfx
1461     libmodplug
1462     libmp3lame
1463     libnut
1464     libopencore_amrnb
1465     libopencore_amrwb
1466     libopencv
1467     libopenh264
1468     libopenjpeg
1469     libopus
1470     libpulse
1471     libquvi
1472     librtmp
1473     librubberband
1474     libschroedinger
1475     libshine
1476     libsmbclient
1477     libsnappy
1478     libsoxr
1479     libspeex
1480     libssh
1481     libstagefright_h264
1482     libtesseract
1483     libtheora
1484     libtwolame
1485     libutvideo
1486     libv4l2
1487     libvidstab
1488     libvo_aacenc
1489     libvo_amrwbenc
1490     libvorbis
1491     libvpx
1492     libwavpack
1493     libwebp
1494     libx264
1495     libx265
1496     libxavs
1497     libxcb
1498     libxcb_shm
1499     libxcb_shape
1500     libxcb_xfixes
1501     libxvid
1502     libzimg
1503     libzmq
1504     libzvbi
1505     lzma
1506     mmal
1507     netcdf
1508     nvenc
1509     openal
1510     opencl
1511     opengl
1512     openssl
1513     schannel
1514     sdl
1515     securetransport
1516     x11grab
1517     xlib
1518     zlib
1519 "
1520
1521 DOCUMENT_LIST="
1522     doc
1523     htmlpages
1524     manpages
1525     podpages
1526     txtpages
1527 "
1528
1529 FEATURE_LIST="
1530     ftrapv
1531     gray
1532     hardcoded_tables
1533     runtime_cpudetect
1534     safe_bitstream_reader
1535     shared
1536     small
1537     static
1538     swscale_alpha
1539 "
1540
1541 HWACCEL_LIST="
1542     d3d11va
1543     dxva2
1544     vaapi
1545     vda
1546     vdpau
1547     videotoolbox
1548     xvmc
1549 "
1550
1551 LIBRARY_LIST="
1552     avcodec
1553     avdevice
1554     avfilter
1555     avformat
1556     avresample
1557     avutil
1558     postproc
1559     swresample
1560     swscale
1561 "
1562
1563 LICENSE_LIST="
1564     gpl
1565     nonfree
1566     version3
1567 "
1568
1569 PROGRAM_LIST="
1570     ffplay
1571     ffprobe
1572     ffserver
1573     ffmpeg
1574 "
1575
1576 SUBSYSTEM_LIST="
1577     dct
1578     dwt
1579     error_resilience
1580     faan
1581     fast_unaligned
1582     fft
1583     lsp
1584     lzo
1585     mdct
1586     pixelutils
1587     network
1588     rdft
1589 "
1590
1591 CONFIG_LIST="
1592     $COMPONENT_LIST
1593     $DOCUMENT_LIST
1594     $EXAMPLE_LIST
1595     $EXTERNAL_LIBRARY_LIST
1596     $FEATURE_LIST
1597     $HWACCEL_LIST
1598     $LICENSE_LIST
1599     $LIBRARY_LIST
1600     $PROGRAM_LIST
1601     $SUBSYSTEM_LIST
1602     fontconfig
1603     incompatible_libav_abi
1604     memalign_hack
1605     memory_poisoning
1606     neon_clobber_test
1607     pic
1608     pod2man
1609     raise_major
1610     thumb
1611     valgrind_backtrace
1612     xmm_clobber_test
1613 "
1614
1615 THREADS_LIST="
1616     pthreads
1617     os2threads
1618     w32threads
1619 "
1620
1621 ATOMICS_LIST="
1622     atomics_gcc
1623     atomics_suncc
1624     atomics_win32
1625 "
1626
1627 ARCH_LIST="
1628     aarch64
1629     alpha
1630     arm
1631     avr32
1632     avr32_ap
1633     avr32_uc
1634     bfin
1635     ia64
1636     m68k
1637     mips
1638     mips64
1639     parisc
1640     ppc
1641     ppc64
1642     s390
1643     sh4
1644     sparc
1645     sparc64
1646     tilegx
1647     tilepro
1648     tomi
1649     x86
1650     x86_32
1651     x86_64
1652 "
1653
1654 ARCH_EXT_LIST_ARM="
1655     armv5te
1656     armv6
1657     armv6t2
1658     armv8
1659     neon
1660     vfp
1661     vfpv3
1662     setend
1663 "
1664
1665 ARCH_EXT_LIST_MIPS="
1666     mipsfpu
1667     mips32r2
1668     mips64r6
1669     mipsdsp
1670     mipsdspr2
1671     msa
1672 "
1673
1674 ARCH_EXT_LIST_LOONGSON="
1675     loongson2
1676     loongson3
1677     mmi
1678 "
1679
1680 ARCH_EXT_LIST_X86_SIMD="
1681     aesni
1682     amd3dnow
1683     amd3dnowext
1684     avx
1685     avx2
1686     fma3
1687     fma4
1688     mmx
1689     mmxext
1690     sse
1691     sse2
1692     sse3
1693     sse4
1694     sse42
1695     ssse3
1696     xop
1697 "
1698
1699 ARCH_EXT_LIST_PPC="
1700     altivec
1701     dcbzl
1702     ldbrx
1703     power8
1704     ppc4xx
1705     vsx
1706 "
1707
1708 ARCH_EXT_LIST_X86="
1709     $ARCH_EXT_LIST_X86_SIMD
1710     cpunop
1711     i686
1712 "
1713
1714 ARCH_EXT_LIST="
1715     $ARCH_EXT_LIST_ARM
1716     $ARCH_EXT_LIST_PPC
1717     $ARCH_EXT_LIST_X86
1718     $ARCH_EXT_LIST_MIPS
1719     $ARCH_EXT_LIST_LOONGSON
1720 "
1721
1722 ARCH_FEATURES="
1723     aligned_stack
1724     fast_64bit
1725     fast_clz
1726     fast_cmov
1727     local_aligned_8
1728     local_aligned_16
1729     local_aligned_32
1730     simd_align_16
1731 "
1732
1733 BUILTIN_LIST="
1734     atomic_cas_ptr
1735     atomic_compare_exchange
1736     machine_rw_barrier
1737     MemoryBarrier
1738     mm_empty
1739     rdtsc
1740     sarestart
1741     sync_val_compare_and_swap
1742 "
1743 HAVE_LIST_CMDLINE="
1744     inline_asm
1745     symver
1746     yasm
1747 "
1748
1749 HAVE_LIST_PUB="
1750     bigendian
1751     fast_unaligned
1752     incompatible_libav_abi
1753 "
1754
1755 HEADERS_LIST="
1756     alsa_asoundlib_h
1757     altivec_h
1758     arpa_inet_h
1759     asm_types_h
1760     cdio_paranoia_h
1761     cdio_paranoia_paranoia_h
1762     dev_bktr_ioctl_bt848_h
1763     dev_bktr_ioctl_meteor_h
1764     dev_ic_bt8xx_h
1765     dev_video_bktr_ioctl_bt848_h
1766     dev_video_meteor_ioctl_meteor_h
1767     direct_h
1768     dirent_h
1769     dlfcn_h
1770     d3d11_h
1771     dxva_h
1772     ES2_gl_h
1773     gsm_h
1774     io_h
1775     mach_mach_time_h
1776     machine_ioctl_bt848_h
1777     machine_ioctl_meteor_h
1778     malloc_h
1779     openjpeg_1_5_openjpeg_h
1780     OpenGL_gl3_h
1781     poll_h
1782     sndio_h
1783     soundcard_h
1784     sys_mman_h
1785     sys_param_h
1786     sys_resource_h
1787     sys_select_h
1788     sys_soundcard_h
1789     sys_time_h
1790     sys_un_h
1791     sys_videoio_h
1792     termios_h
1793     udplite_h
1794     unistd_h
1795     valgrind_valgrind_h
1796     windows_h
1797     winsock2_h
1798 "
1799
1800 INTRINSICS_LIST="
1801     intrinsics_neon
1802 "
1803
1804 COMPLEX_FUNCS="
1805     cabs
1806     cexp
1807 "
1808
1809 MATH_FUNCS="
1810     atanf
1811     atan2f
1812     cbrt
1813     cbrtf
1814     copysign
1815     cosf
1816     erf
1817     exp2
1818     exp2f
1819     expf
1820     hypot
1821     isinf
1822     isnan
1823     ldexpf
1824     llrint
1825     llrintf
1826     log2
1827     log2f
1828     log10f
1829     lrint
1830     lrintf
1831     powf
1832     rint
1833     round
1834     roundf
1835     sinf
1836     trunc
1837     truncf
1838 "
1839
1840 SYSTEM_FUNCS="
1841     access
1842     aligned_malloc
1843     clock_gettime
1844     closesocket
1845     CommandLineToArgvW
1846     CoTaskMemFree
1847     CryptGenRandom
1848     dlopen
1849     fcntl
1850     flt_lim
1851     fork
1852     getaddrinfo
1853     gethrtime
1854     getopt
1855     GetProcessAffinityMask
1856     GetProcessMemoryInfo
1857     GetProcessTimes
1858     getrusage
1859     GetSystemTimeAsFileTime
1860     gettimeofday
1861     glob
1862     glXGetProcAddress
1863     gmtime_r
1864     inet_aton
1865     isatty
1866     jack_port_get_latency_range
1867     kbhit
1868     localtime_r
1869     lstat
1870     lzo1x_999_compress
1871     mach_absolute_time
1872     MapViewOfFile
1873     memalign
1874     mkstemp
1875     mmap
1876     mprotect
1877     nanosleep
1878     PeekNamedPipe
1879     posix_memalign
1880     pthread_cancel
1881     sched_getaffinity
1882     SetConsoleTextAttribute
1883     SetConsoleCtrlHandler
1884     setmode
1885     setrlimit
1886     Sleep
1887     strerror_r
1888     sysconf
1889     sysctl
1890     usleep
1891     UTGetOSTypeFromString
1892     VirtualAlloc
1893     wglGetProcAddress
1894 "
1895
1896 TOOLCHAIN_FEATURES="
1897     as_dn_directive
1898     as_func
1899     as_object_arch
1900     asm_mod_q
1901     attribute_may_alias
1902     attribute_packed
1903     ebp_available
1904     ebx_available
1905     gnu_as
1906     gnu_windres
1907     ibm_asm
1908     inline_asm_labels
1909     inline_asm_nonlocal_labels
1910     inline_asm_direct_symbol_refs
1911     pragma_deprecated
1912     rsync_contimeout
1913     symver_asm_label
1914     symver_gnu_asm
1915     vfp_args
1916     xform_asm
1917     xmm_clobbers
1918 "
1919
1920 TYPES_LIST="
1921     CONDITION_VARIABLE_Ptr
1922     socklen_t
1923     struct_addrinfo
1924     struct_group_source_req
1925     struct_ip_mreq_source
1926     struct_ipv6_mreq
1927     struct_pollfd
1928     struct_rusage_ru_maxrss
1929     struct_sctp_event_subscribe
1930     struct_sockaddr_in6
1931     struct_sockaddr_sa_len
1932     struct_sockaddr_storage
1933     struct_stat_st_mtim_tv_nsec
1934     struct_v4l2_frmivalenum_discrete
1935 "
1936
1937 HAVE_LIST="
1938     $ARCH_EXT_LIST
1939     $(add_suffix _external $ARCH_EXT_LIST)
1940     $(add_suffix _inline   $ARCH_EXT_LIST)
1941     $ARCH_FEATURES
1942     $ATOMICS_LIST
1943     $BUILTIN_LIST
1944     $COMPLEX_FUNCS
1945     $HAVE_LIST_CMDLINE
1946     $HAVE_LIST_PUB
1947     $HEADERS_LIST
1948     $INTRINSICS_LIST
1949     $MATH_FUNCS
1950     $SYSTEM_FUNCS
1951     $THREADS_LIST
1952     $TOOLCHAIN_FEATURES
1953     $TYPES_LIST
1954     atomics_native
1955     dos_paths
1956     dxva2api_cobj
1957     dxva2_lib
1958     winrt
1959     libc_msvcrt
1960     libdc1394_1
1961     libdc1394_2
1962     makeinfo
1963     makeinfo_html
1964     perl
1965     pod2man
1966     sdl
1967     section_data_rel_ro
1968     texi2html
1969     threads
1970     vaapi_x11
1971     vdpau_x11
1972     xlib
1973 "
1974
1975 # options emitted with CONFIG_ prefix but not available on the command line
1976 CONFIG_EXTRA="
1977     aandcttables
1978     ac3dsp
1979     audio_frame_queue
1980     audiodsp
1981     blockdsp
1982     bswapdsp
1983     cabac
1984     dvprofile
1985     exif
1986     faandct
1987     faanidct
1988     fdctdsp
1989     flacdsp
1990     fmtconvert
1991     frame_thread_encoder
1992     g722dsp
1993     golomb
1994     gplv3
1995     h263dsp
1996     h264chroma
1997     h264dsp
1998     h264pred
1999     h264qpel
2000     hpeldsp
2001     huffman
2002     huffyuvdsp
2003     huffyuvencdsp
2004     idctdsp
2005     iirfilter
2006     imdct15
2007     intrax8
2008     ividsp
2009     jpegtables
2010     libx262
2011     lgplv3
2012     llauddsp
2013     llviddsp
2014     lpc
2015     lzf
2016     me_cmp
2017     mpeg_er
2018     mpegaudio
2019     mpegaudiodsp
2020     mpegvideo
2021     mpegvideoenc
2022     mss34dsp
2023     pixblockdsp
2024     qpeldsp
2025     qsv
2026     qsvdec
2027     qsvenc
2028     rangecoder
2029     riffdec
2030     riffenc
2031     rtpdec
2032     rtpenc_chain
2033     rv34dsp
2034     sinewin
2035     snappy
2036     startcode
2037     texturedsp
2038     texturedspenc
2039     tpeldsp
2040     videodsp
2041     vp3dsp
2042     vp56dsp
2043     vp8dsp
2044     wma_freqs
2045     wmv2dsp
2046 "
2047
2048 CMDLINE_SELECT="
2049     $ARCH_EXT_LIST
2050     $CONFIG_LIST
2051     $HAVE_LIST_CMDLINE
2052     $THREADS_LIST
2053     asm
2054     cross_compile
2055     debug
2056     extra_warnings
2057     logging
2058     lto
2059     optimizations
2060     rpath
2061     stripping
2062 "
2063
2064 PATHS_LIST="
2065     bindir
2066     datadir
2067     docdir
2068     incdir
2069     libdir
2070     mandir
2071     pkgconfigdir
2072     prefix
2073     shlibdir
2074 "
2075
2076 CMDLINE_SET="
2077     $PATHS_LIST
2078     ar
2079     arch
2080     as
2081     assert_level
2082     build_suffix
2083     cc
2084     objcc
2085     cpu
2086     cross_prefix
2087     custom_allocator
2088     cxx
2089     dep_cc
2090     doxygen
2091     env
2092     extra_version
2093     gas
2094     host_cc
2095     host_cflags
2096     host_ld
2097     host_ldflags
2098     host_libs
2099     host_os
2100     install
2101     ld
2102     logfile
2103     malloc_prefix
2104     nm
2105     optflags
2106     pkg_config
2107     pkg_config_flags
2108     progs_suffix
2109     random_seed
2110     ranlib
2111     samples
2112     strip
2113     sws_max_filter_size
2114     sysinclude
2115     sysroot
2116     target_exec
2117     target_os
2118     target_path
2119     target_samples
2120     tempprefix
2121     toolchain
2122     valgrind
2123     yasmexe
2124 "
2125
2126 CMDLINE_APPEND="
2127     extra_cflags
2128     extra_cxxflags
2129     extra_objcflags
2130     host_cppflags
2131 "
2132
2133 # code dependency declarations
2134
2135 # architecture extensions
2136
2137 armv5te_deps="arm"
2138 armv6_deps="arm"
2139 armv6t2_deps="arm"
2140 armv8_deps="aarch64"
2141 neon_deps_any="aarch64 arm"
2142 intrinsics_neon_deps="neon"
2143 vfp_deps_any="aarch64 arm"
2144 vfpv3_deps="vfp"
2145 setend_deps="arm"
2146
2147 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2148
2149 mipsfpu_deps="mips"
2150 mipsdsp_deps="mips"
2151 mipsdspr2_deps="mips"
2152 mips32r2_deps="mips"
2153 mips64r6_deps="mips"
2154 msa_deps="mips"
2155 mmi_deps="mips"
2156
2157 altivec_deps="ppc"
2158 dcbzl_deps="ppc"
2159 ldbrx_deps="ppc"
2160 ppc4xx_deps="ppc"
2161 vsx_deps="altivec"
2162 power8_deps="vsx"
2163
2164 cpunop_deps="i686"
2165 x86_64_select="i686"
2166 x86_64_suggest="fast_cmov"
2167
2168 amd3dnow_deps="mmx"
2169 amd3dnowext_deps="amd3dnow"
2170 i686_deps="x86"
2171 mmx_deps="x86"
2172 mmxext_deps="mmx"
2173 sse_deps="mmxext"
2174 sse2_deps="sse"
2175 sse3_deps="sse2"
2176 ssse3_deps="sse3"
2177 sse4_deps="ssse3"
2178 sse42_deps="sse4"
2179 aesni_deps="sse42"
2180 avx_deps="sse42"
2181 xop_deps="avx"
2182 fma3_deps="avx"
2183 fma4_deps="avx"
2184 avx2_deps="avx"
2185
2186 mmx_external_deps="yasm"
2187 mmx_inline_deps="inline_asm"
2188 mmx_suggest="mmx_external mmx_inline"
2189
2190 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2191     eval dep=\$${ext}_deps
2192     eval ${ext}_external_deps='"${dep}_external"'
2193     eval ${ext}_inline_deps='"${dep}_inline"'
2194     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2195 done
2196
2197 aligned_stack_if_any="aarch64 ppc x86"
2198 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2199 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2200 fast_unaligned_if_any="aarch64 ppc x86"
2201 simd_align_16_if_any="altivec neon sse"
2202
2203 # system capabilities
2204 symver_if_any="symver_asm_label symver_gnu_asm"
2205 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2206
2207 # threading support
2208 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2209 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2210 atomics_win32_if="MemoryBarrier"
2211 atomics_native_if_any="$ATOMICS_LIST"
2212 w32threads_deps="atomics_native"
2213 threads_if_any="$THREADS_LIST"
2214
2215 # subsystems
2216 dct_select="rdft"
2217 error_resilience_select="me_cmp"
2218 faandct_deps="faan fdctdsp"
2219 faanidct_deps="faan idctdsp"
2220 frame_thread_encoder_deps="encoders threads"
2221 intrax8_select="error_resilience"
2222 mdct_select="fft"
2223 rdft_select="fft"
2224 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2225 mpeg_er_select="error_resilience"
2226 mpegaudio_select="mpegaudiodsp"
2227 mpegaudiodsp_select="dct"
2228 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2229 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2230 qsvdec_select="qsv"
2231 qsvenc_select="qsv"
2232
2233 # decoders / encoders
2234 aac_decoder_select="imdct15 mdct sinewin"
2235 aac_fixed_decoder_select="mdct sinewin"
2236 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2237 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2238 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2239 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2240 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2241 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2242 adpcm_g722_decoder_select="g722dsp"
2243 adpcm_g722_encoder_select="g722dsp"
2244 aic_decoder_select="golomb idctdsp"
2245 alac_encoder_select="lpc"
2246 als_decoder_select="bswapdsp"
2247 amrnb_decoder_select="lsp"
2248 amrwb_decoder_select="lsp"
2249 amv_decoder_select="sp5x_decoder exif"
2250 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2251 ape_decoder_select="bswapdsp llauddsp"
2252 apng_decoder_select="zlib"
2253 apng_encoder_select="huffyuvencdsp zlib"
2254 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2255 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2256 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2257 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2258 atrac1_decoder_select="mdct sinewin"
2259 atrac3_decoder_select="mdct"
2260 atrac3p_decoder_select="mdct sinewin"
2261 avrn_decoder_select="exif jpegtables"
2262 bink_decoder_select="blockdsp hpeldsp"
2263 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2264 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2265 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2266 cllc_decoder_select="bswapdsp"
2267 comfortnoise_encoder_select="lpc"
2268 cook_decoder_select="audiodsp mdct sinewin"
2269 cscd_decoder_select="lzo"
2270 cscd_decoder_suggest="zlib"
2271 dca_decoder_select="fmtconvert mdct"
2272 dds_decoder_select="texturedsp"
2273 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2274 dnxhd_decoder_select="blockdsp idctdsp"
2275 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2276 dvvideo_decoder_select="dvprofile idctdsp"
2277 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2278 dxa_decoder_select="zlib"
2279 dxv_decoder_select="lzf texturedsp"
2280 eac3_decoder_select="ac3_decoder"
2281 eac3_encoder_select="ac3_encoder"
2282 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2283 eatgq_decoder_select="aandcttables"
2284 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2285 exr_decoder_select="zlib"
2286 ffv1_decoder_select="golomb rangecoder"
2287 ffv1_encoder_select="rangecoder"
2288 ffvhuff_decoder_select="huffyuv_decoder"
2289 ffvhuff_encoder_select="huffyuv_encoder"
2290 fic_decoder_select="golomb"
2291 flac_decoder_select="flacdsp golomb"
2292 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2293 flashsv_decoder_select="zlib"
2294 flashsv_encoder_select="zlib"
2295 flashsv2_encoder_select="zlib"
2296 flashsv2_decoder_select="zlib"
2297 flv_decoder_select="h263_decoder"
2298 flv_encoder_select="h263_encoder"
2299 fourxm_decoder_select="blockdsp bswapdsp"
2300 fraps_decoder_select="bswapdsp huffman"
2301 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2302 g729_decoder_select="audiodsp"
2303 h261_decoder_select="mpegvideo"
2304 h261_encoder_select="aandcttables mpegvideoenc"
2305 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2306 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2307 h263i_decoder_select="h263_decoder"
2308 h263p_decoder_select="h263_decoder"
2309 h263p_encoder_select="h263_encoder"
2310 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2311 h264_decoder_suggest="error_resilience"
2312 h264_qsv_decoder_deps="libmfx"
2313 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2314 h264_qsv_encoder_deps="libmfx"
2315 h264_qsv_encoder_select="qsvenc"
2316 hap_decoder_select="snappy texturedsp"
2317 hap_encoder_deps="libsnappy"
2318 hap_encoder_select="texturedspenc"
2319 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2320 hevc_qsv_encoder_deps="libmfx"
2321 hevc_qsv_decoder_deps="libmfx"
2322 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2323 hevc_qsv_encoder_select="qsvenc"
2324 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2325 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2326 iac_decoder_select="imc_decoder"
2327 imc_decoder_select="bswapdsp fft mdct sinewin"
2328 indeo3_decoder_select="hpeldsp"
2329 indeo4_decoder_select="ividsp"
2330 indeo5_decoder_select="ividsp"
2331 interplay_video_decoder_select="hpeldsp"
2332 jpegls_decoder_select="golomb mjpeg_decoder"
2333 jpegls_encoder_select="golomb"
2334 jv_decoder_select="blockdsp"
2335 lagarith_decoder_select="huffyuvdsp"
2336 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2337 loco_decoder_select="golomb"
2338 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2339 metasound_decoder_select="lsp mdct sinewin"
2340 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2341 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2342 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2343 mjpegb_decoder_select="mjpeg_decoder"
2344 mlp_decoder_select="mlp_parser"
2345 motionpixels_decoder_select="bswapdsp"
2346 mp1_decoder_select="mpegaudio"
2347 mp1float_decoder_select="mpegaudio"
2348 mp2_decoder_select="mpegaudio"
2349 mp2float_decoder_select="mpegaudio"
2350 mp3_decoder_select="mpegaudio"
2351 mp3adu_decoder_select="mpegaudio"
2352 mp3adufloat_decoder_select="mpegaudio"
2353 mp3float_decoder_select="mpegaudio"
2354 mp3on4_decoder_select="mpegaudio"
2355 mp3on4float_decoder_select="mpegaudio"
2356 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2357 mpc8_decoder_select="mpegaudiodsp"
2358 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2359 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2360 mpegvideo_decoder_select="mpegvideo"
2361 mpeg1video_decoder_select="mpegvideo"
2362 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2363 mpeg2video_decoder_select="mpegvideo"
2364 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2365 mpeg2_qsv_decoder_deps="libmfx"
2366 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2367 mpeg2_qsv_encoder_deps="libmfx"
2368 mpeg2_qsv_encoder_select="qsvenc"
2369 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2370 mpeg4_encoder_select="h263_encoder"
2371 msa1_decoder_select="mss34dsp"
2372 msmpeg4v1_decoder_select="h263_decoder"
2373 msmpeg4v2_decoder_select="h263_decoder"
2374 msmpeg4v2_encoder_select="h263_encoder"
2375 msmpeg4v3_decoder_select="h263_decoder"
2376 msmpeg4v3_encoder_select="h263_encoder"
2377 mss2_decoder_select="vc1_decoder"
2378 mts2_decoder_select="mss34dsp"
2379 mxpeg_decoder_select="mjpeg_decoder"
2380 nellymoser_decoder_select="mdct sinewin"
2381 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2382 nuv_decoder_select="idctdsp lzo"
2383 on2avc_decoder_select="mdct"
2384 opus_decoder_deps="swresample"
2385 opus_decoder_select="imdct15"
2386 png_decoder_select="zlib"
2387 png_encoder_select="huffyuvencdsp zlib"
2388 prores_decoder_select="blockdsp idctdsp"
2389 prores_encoder_select="fdctdsp"
2390 qcelp_decoder_select="lsp"
2391 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2392 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2393 ra_144_decoder_select="audiodsp"
2394 ralf_decoder_select="golomb"
2395 rawvideo_decoder_select="bswapdsp"
2396 rscc_decoder_select="zlib"
2397 rtjpeg_decoder_select="me_cmp"
2398 rv10_decoder_select="h263_decoder"
2399 rv10_encoder_select="h263_encoder"
2400 rv20_decoder_select="h263_decoder"
2401 rv20_encoder_select="h263_encoder"
2402 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2403 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2404 screenpresso_decoder_select="zlib"
2405 shorten_decoder_select="golomb"
2406 sipr_decoder_select="lsp"
2407 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2408 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2409 sonic_decoder_select="golomb rangecoder"
2410 sonic_encoder_select="golomb rangecoder"
2411 sonic_ls_encoder_select="golomb rangecoder"
2412 sp5x_decoder_select="mjpeg_decoder"
2413 svq1_decoder_select="hpeldsp"
2414 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2415 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2416 svq3_decoder_suggest="zlib"
2417 tak_decoder_select="audiodsp"
2418 tdsc_decoder_select="zlib mjpeg_decoder"
2419 theora_decoder_select="vp3_decoder"
2420 thp_decoder_select="mjpeg_decoder"
2421 tiff_decoder_suggest="zlib lzma"
2422 tiff_encoder_suggest="zlib"
2423 truehd_decoder_select="mlp_parser"
2424 truemotion2_decoder_select="bswapdsp"
2425 truespeech_decoder_select="bswapdsp"
2426 tscc_decoder_select="zlib"
2427 twinvq_decoder_select="mdct lsp sinewin"
2428 txd_decoder_select="texturedsp"
2429 utvideo_decoder_select="bswapdsp"
2430 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2431 vble_decoder_select="huffyuvdsp"
2432 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2433 vc1image_decoder_select="vc1_decoder"
2434 vc1_qsv_decoder_deps="libmfx"
2435 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2436 vorbis_decoder_select="mdct"
2437 vorbis_encoder_select="mdct"
2438 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2439 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2440 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2441 vp6a_decoder_select="vp6_decoder"
2442 vp6f_decoder_select="vp6_decoder"
2443 vp7_decoder_select="h264pred videodsp vp8dsp"
2444 vp8_decoder_select="h264pred videodsp vp8dsp"
2445 vp9_decoder_select="videodsp vp9_parser"
2446 webp_decoder_select="vp8_decoder"
2447 wmalossless_decoder_select="llauddsp"
2448 wmapro_decoder_select="mdct sinewin wma_freqs"
2449 wmav1_decoder_select="mdct sinewin wma_freqs"
2450 wmav1_encoder_select="mdct sinewin wma_freqs"
2451 wmav2_decoder_select="mdct sinewin wma_freqs"
2452 wmav2_encoder_select="mdct sinewin wma_freqs"
2453 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2454 wmv1_decoder_select="h263_decoder"
2455 wmv1_encoder_select="h263_encoder"
2456 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2457 wmv2_encoder_select="h263_encoder wmv2dsp"
2458 wmv3_decoder_select="vc1_decoder"
2459 wmv3image_decoder_select="wmv3_decoder"
2460 zerocodec_decoder_select="zlib"
2461 zlib_decoder_select="zlib"
2462 zlib_encoder_select="zlib"
2463 zmbv_decoder_select="zlib"
2464 zmbv_encoder_select="zlib"
2465
2466 # hardware accelerators
2467 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2468 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2469 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2470 vaapi_deps="va_va_h"
2471 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2472 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2473 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2474 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2475 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2476 xvmc_deps="X11_extensions_XvMClib_h"
2477
2478 h263_vaapi_hwaccel_deps="vaapi"
2479 h263_vaapi_hwaccel_select="h263_decoder"
2480 h263_videotoolbox_hwaccel_deps="videotoolbox"
2481 h263_videotoolbox_hwaccel_select="h263_decoder"
2482 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2483 h264_d3d11va_hwaccel_deps="d3d11va"
2484 h264_d3d11va_hwaccel_select="h264_decoder"
2485 h264_dxva2_hwaccel_deps="dxva2"
2486 h264_dxva2_hwaccel_select="h264_decoder"
2487 h264_mmal_decoder_deps="mmal"
2488 h264_mmal_hwaccel_deps="mmal"
2489 h264_mmal_decoder_select="h264_decoder"
2490 h264_mmal_encoder_deps="mmal"
2491 h264_qsv_hwaccel_deps="libmfx"
2492 h264_vaapi_hwaccel_deps="vaapi"
2493 h264_vaapi_hwaccel_select="h264_decoder"
2494 h264_vda_decoder_deps="vda"
2495 h264_vda_decoder_select="h264_decoder"
2496 h264_vda_hwaccel_deps="vda"
2497 h264_vda_hwaccel_select="h264_decoder"
2498 h264_vda_old_hwaccel_deps="vda"
2499 h264_vda_old_hwaccel_select="h264_decoder"
2500 h264_vdpau_decoder_deps="vdpau"
2501 h264_vdpau_decoder_select="h264_decoder"
2502 h264_vdpau_hwaccel_deps="vdpau"
2503 h264_vdpau_hwaccel_select="h264_decoder"
2504 h264_videotoolbox_hwaccel_deps="videotoolbox"
2505 h264_videotoolbox_hwaccel_select="h264_decoder"
2506 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2507 hevc_d3d11va_hwaccel_select="hevc_decoder"
2508 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2509 hevc_dxva2_hwaccel_select="hevc_decoder"
2510 hevc_qsv_hwaccel_deps="libmfx"
2511 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2512 hevc_vaapi_hwaccel_select="hevc_decoder"
2513 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2514 hevc_vdpau_hwaccel_select="hevc_decoder"
2515 mpeg_vdpau_decoder_deps="vdpau"
2516 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2517 mpeg_xvmc_hwaccel_deps="xvmc"
2518 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2519 mpeg1_vdpau_decoder_deps="vdpau"
2520 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2521 mpeg1_vdpau_hwaccel_deps="vdpau"
2522 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2523 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2524 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2525 mpeg1_xvmc_hwaccel_deps="xvmc"
2526 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2527 mpeg2_crystalhd_decoder_select="crystalhd"
2528 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2529 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2530 mpeg2_dxva2_hwaccel_deps="dxva2"
2531 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2532 mpeg2_mmal_decoder_deps="mmal"
2533 mpeg2_mmal_hwaccel_deps="mmal"
2534 mpeg2_mmal_decoder_select="mpeg2video_decoder"
2535 mpeg2_qsv_hwaccel_deps="libmfx"
2536 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2537 mpeg2_vaapi_hwaccel_deps="vaapi"
2538 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2539 mpeg2_vdpau_hwaccel_deps="vdpau"
2540 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2541 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2542 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2543 mpeg2_xvmc_hwaccel_deps="xvmc"
2544 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2545 mpeg4_crystalhd_decoder_select="crystalhd"
2546 mpeg4_vaapi_hwaccel_deps="vaapi"
2547 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2548 mpeg4_vdpau_decoder_deps="vdpau"
2549 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2550 mpeg4_vdpau_hwaccel_deps="vdpau"
2551 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2552 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2553 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2554 msmpeg4_crystalhd_decoder_select="crystalhd"
2555 vc1_crystalhd_decoder_select="crystalhd"
2556 vc1_d3d11va_hwaccel_deps="d3d11va"
2557 vc1_d3d11va_hwaccel_select="vc1_decoder"
2558 vc1_dxva2_hwaccel_deps="dxva2"
2559 vc1_dxva2_hwaccel_select="vc1_decoder"
2560 vc1_vaapi_hwaccel_deps="vaapi"
2561 vc1_vaapi_hwaccel_select="vc1_decoder"
2562 vc1_vdpau_decoder_deps="vdpau"
2563 vc1_vdpau_decoder_select="vc1_decoder"
2564 vc1_vdpau_hwaccel_deps="vdpau"
2565 vc1_vdpau_hwaccel_select="vc1_decoder"
2566 vc1_mmal_decoder_deps="mmal"
2567 vc1_mmal_hwaccel_deps="mmal"
2568 vc1_mmal_decoder_select="vc1_decoder"
2569 vc1_qsv_hwaccel_deps="libmfx"
2570 vc1_qsv_hwaccel_select="qsvdec_vc1"
2571 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2572 vp9_d3d11va_hwaccel_select="vp9_decoder"
2573 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2574 vp9_dxva2_hwaccel_select="vp9_decoder"
2575 wmv3_crystalhd_decoder_select="crystalhd"
2576 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2577 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2578 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2579 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2580 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2581
2582 # parsers
2583 h264_parser_select="h264_decoder"
2584 hevc_parser_select="golomb"
2585 mpegvideo_parser_select="mpegvideo"
2586 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2587 vc1_parser_select="mpegvideo startcode vc1_decoder"
2588
2589 # bitstream_filters
2590 mjpeg2jpeg_bsf_select="jpegtables"
2591
2592 # external libraries
2593 chromaprint_muxer_deps="chromaprint"
2594 libaacplus_encoder_deps="libaacplus"
2595 libcelt_decoder_deps="libcelt"
2596 libdcadec_decoder_deps="libdcadec"
2597 libfaac_encoder_deps="libfaac"
2598 libfaac_encoder_select="audio_frame_queue"
2599 libfdk_aac_decoder_deps="libfdk_aac"
2600 libfdk_aac_encoder_deps="libfdk_aac"
2601 libfdk_aac_encoder_select="audio_frame_queue"
2602 libgme_demuxer_deps="libgme"
2603 libgsm_decoder_deps="libgsm"
2604 libgsm_encoder_deps="libgsm"
2605 libgsm_ms_decoder_deps="libgsm"
2606 libgsm_ms_encoder_deps="libgsm"
2607 libilbc_decoder_deps="libilbc"
2608 libilbc_encoder_deps="libilbc"
2609 libkvazaar_encoder_deps="libkvazaar"
2610 libmodplug_demuxer_deps="libmodplug"
2611 libmp3lame_encoder_deps="libmp3lame"
2612 libmp3lame_encoder_select="audio_frame_queue"
2613 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2614 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2615 libopencore_amrnb_encoder_select="audio_frame_queue"
2616 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2617 libopenh264_encoder_deps="libopenh264"
2618 libopenjpeg_decoder_deps="libopenjpeg"
2619 libopenjpeg_encoder_deps="libopenjpeg"
2620 libopus_decoder_deps="libopus"
2621 libopus_encoder_deps="libopus"
2622 libopus_encoder_select="audio_frame_queue"
2623 libquvi_demuxer_deps="libquvi"
2624 libschroedinger_decoder_deps="libschroedinger"
2625 libschroedinger_encoder_deps="libschroedinger"
2626 libshine_encoder_deps="libshine"
2627 libshine_encoder_select="audio_frame_queue"
2628 libspeex_decoder_deps="libspeex"
2629 libspeex_encoder_deps="libspeex"
2630 libspeex_encoder_select="audio_frame_queue"
2631 libstagefright_h264_decoder_deps="libstagefright_h264"
2632 libtheora_encoder_deps="libtheora"
2633 libtwolame_encoder_deps="libtwolame"
2634 libvo_aacenc_encoder_deps="libvo_aacenc"
2635 libvo_aacenc_encoder_select="audio_frame_queue"
2636 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2637 libvorbis_decoder_deps="libvorbis"
2638 libvorbis_encoder_deps="libvorbis"
2639 libvorbis_encoder_select="audio_frame_queue"
2640 libvpx_vp8_decoder_deps="libvpx"
2641 libvpx_vp8_encoder_deps="libvpx"
2642 libvpx_vp9_decoder_deps="libvpx"
2643 libvpx_vp9_encoder_deps="libvpx"
2644 libwavpack_encoder_deps="libwavpack"
2645 libwebp_encoder_deps="libwebp"
2646 libwebp_anim_encoder_deps="libwebp"
2647 libx262_encoder_deps="libx262"
2648 libx264_encoder_deps="libx264"
2649 libx264rgb_encoder_deps="libx264"
2650 libx264rgb_encoder_select="libx264_encoder"
2651 libx265_encoder_deps="libx265"
2652 libxavs_encoder_deps="libxavs"
2653 libxvid_encoder_deps="libxvid"
2654 libutvideo_decoder_deps="libutvideo"
2655 libutvideo_encoder_deps="libutvideo"
2656 libzvbi_teletext_decoder_deps="libzvbi"
2657 nvenc_encoder_deps="nvenc"
2658 nvenc_h264_encoder_deps="nvenc"
2659 nvenc_hevc_encoder_deps="nvenc"
2660
2661 # demuxers / muxers
2662 ac3_demuxer_select="ac3_parser"
2663 asf_demuxer_select="riffdec"
2664 asf_o_demuxer_select="riffdec"
2665 asf_muxer_select="riffenc"
2666 asf_stream_muxer_select="asf_muxer"
2667 avi_demuxer_select="riffdec exif"
2668 avi_muxer_select="riffenc"
2669 avisynth_demuxer_deps="avisynth"
2670 avisynth_demuxer_select="riffdec"
2671 caf_demuxer_select="riffdec"
2672 dash_muxer_select="mp4_muxer"
2673 dirac_demuxer_select="dirac_parser"
2674 dts_demuxer_select="dca_parser"
2675 dtshd_demuxer_select="dca_parser"
2676 dv_demuxer_select="dvprofile"
2677 dv_muxer_select="dvprofile"
2678 dxa_demuxer_select="riffdec"
2679 eac3_demuxer_select="ac3_parser"
2680 f4v_muxer_select="mov_muxer"
2681 flac_demuxer_select="flac_parser"
2682 hds_muxer_select="flv_muxer"
2683 hls_muxer_select="mpegts_muxer"
2684 image2_alias_pix_demuxer_select="image2_demuxer"
2685 image2_brender_pix_demuxer_select="image2_demuxer"
2686 ipod_muxer_select="mov_muxer"
2687 ismv_muxer_select="mov_muxer"
2688 libnut_demuxer_deps="libnut"
2689 libnut_muxer_deps="libnut"
2690 matroska_audio_muxer_select="matroska_muxer"
2691 matroska_demuxer_select="riffdec"
2692 matroska_demuxer_suggest="bzlib lzo zlib"
2693 matroska_muxer_select="riffenc"
2694 mmf_muxer_select="riffenc"
2695 mov_demuxer_select="riffdec"
2696 mov_demuxer_suggest="zlib"
2697 mov_muxer_select="riffenc rtpenc_chain"
2698 mp3_demuxer_select="mpegaudio_parser"
2699 mp4_muxer_select="mov_muxer"
2700 mpegts_muxer_select="adts_muxer latm_muxer"
2701 mpegtsraw_demuxer_select="mpegts_demuxer"
2702 mxf_d10_muxer_select="mxf_muxer"
2703 mxf_opatom_muxer_select="mxf_muxer"
2704 nut_muxer_select="riffenc"
2705 nuv_demuxer_select="riffdec"
2706 oga_muxer_select="ogg_muxer"
2707 ogg_demuxer_select="golomb"
2708 opus_muxer_select="ogg_muxer"
2709 psp_muxer_select="mov_muxer"
2710 rtp_demuxer_select="sdp_demuxer"
2711 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2712 rtsp_demuxer_select="http_protocol rtpdec"
2713 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2714 sap_demuxer_select="sdp_demuxer"
2715 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2716 sdp_demuxer_select="rtpdec"
2717 smoothstreaming_muxer_select="ismv_muxer"
2718 spdif_muxer_select="aac_parser"
2719 spx_muxer_select="ogg_muxer"
2720 tak_demuxer_select="tak_parser"
2721 tg2_muxer_select="mov_muxer"
2722 tgp_muxer_select="mov_muxer"
2723 vobsub_demuxer_select="mpegps_demuxer"
2724 w64_demuxer_select="wav_demuxer"
2725 w64_muxer_select="wav_muxer"
2726 wav_demuxer_select="riffdec"
2727 wav_muxer_select="riffenc"
2728 webm_muxer_select="riffenc"
2729 wtv_demuxer_select="riffdec"
2730 wtv_muxer_select="riffenc"
2731 xmv_demuxer_select="riffdec"
2732 xwma_demuxer_select="riffdec"
2733
2734 # indevs / outdevs
2735 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2736 alsa_outdev_deps="alsa_asoundlib_h"
2737 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2738 avfoundation_indev_select="avfoundation"
2739 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2740 caca_outdev_deps="libcaca"
2741 decklink_outdev_deps="decklink pthreads"
2742 decklink_outdev_extralibs="-lstdc++"
2743 decklink_indev_deps="decklink pthreads"
2744 decklink_indev_extralibs="-lstdc++"
2745 dshow_indev_deps="IBaseFilter"
2746 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2747 dv1394_indev_deps="dv1394"
2748 dv1394_indev_select="dv_demuxer"
2749 fbdev_indev_deps="linux_fb_h"
2750 fbdev_outdev_deps="linux_fb_h"
2751 gdigrab_indev_deps="CreateDIBSection"
2752 gdigrab_indev_extralibs="-lgdi32"
2753 gdigrab_indev_select="bmp_decoder"
2754 iec61883_indev_deps="libiec61883"
2755 jack_indev_deps="jack_jack_h sem_timedwait"
2756 lavfi_indev_deps="avfilter"
2757 libcdio_indev_deps="libcdio"
2758 libdc1394_indev_deps="libdc1394"
2759 libv4l2_indev_deps="libv4l2"
2760 openal_indev_deps="openal"
2761 opengl_outdev_deps="opengl"
2762 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2763 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2764 pulse_indev_deps="libpulse"
2765 pulse_outdev_deps="libpulse"
2766 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2767 qtkit_indev_select="qtkit"
2768 sdl_outdev_deps="sdl"
2769 sndio_indev_deps="sndio_h"
2770 sndio_outdev_deps="sndio_h"
2771 v4l_indev_deps="linux_videodev_h"
2772 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2773 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2774 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2775 vfwcap_indev_extralibs="-lavicap32"
2776 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2777 xv_outdev_extralibs="-lXv -lX11 -lXext"
2778 x11grab_indev_deps="x11grab"
2779 x11grab_xcb_indev_deps="libxcb"
2780
2781 # protocols
2782 async_protocol_deps="threads"
2783 bluray_protocol_deps="libbluray"
2784 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2785 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2786 ffrtmpcrypt_protocol_select="tcp_protocol"
2787 ffrtmphttp_protocol_deps="!librtmp_protocol"
2788 ffrtmphttp_protocol_select="http_protocol"
2789 ftp_protocol_select="tcp_protocol"
2790 gopher_protocol_select="network"
2791 http_protocol_select="tcp_protocol"
2792 httpproxy_protocol_select="tcp_protocol"
2793 https_protocol_select="tls_protocol"
2794 icecast_protocol_select="http_protocol"
2795 librtmp_protocol_deps="librtmp"
2796 librtmpe_protocol_deps="librtmp"
2797 librtmps_protocol_deps="librtmp"
2798 librtmpt_protocol_deps="librtmp"
2799 librtmpte_protocol_deps="librtmp"
2800 libsmbclient_protocol_deps="libsmbclient gplv3"
2801 libssh_protocol_deps="libssh"
2802 mmsh_protocol_select="http_protocol"
2803 mmst_protocol_select="network"
2804 rtmp_protocol_deps="!librtmp_protocol"
2805 rtmp_protocol_select="tcp_protocol"
2806 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2807 rtmps_protocol_deps="!librtmp_protocol"
2808 rtmps_protocol_select="tls_protocol"
2809 rtmpt_protocol_select="ffrtmphttp_protocol"
2810 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2811 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2812 rtp_protocol_select="udp_protocol"
2813 sctp_protocol_deps="struct_sctp_event_subscribe"
2814 sctp_protocol_select="network"
2815 srtp_protocol_select="rtp_protocol"
2816 tcp_protocol_select="network"
2817 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2818 tls_gnutls_protocol_select="tcp_protocol"
2819 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2820 tls_openssl_protocol_select="tcp_protocol"
2821 tls_schannel_protocol_deps="schannel"
2822 tls_schannel_protocol_select="tcp_protocol"
2823 tls_securetransport_protocol_deps="securetransport"
2824 tls_securetransport_protocol_select="tcp_protocol"
2825 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2826 udp_protocol_select="network"
2827 udplite_protocol_select="network"
2828 unix_protocol_deps="sys_un_h"
2829 unix_protocol_select="network"
2830
2831 # filters
2832 aemphasis_filter_deps="cabs cexp"
2833 amovie_filter_deps="avcodec avformat"
2834 aresample_filter_deps="swresample"
2835 ass_filter_deps="libass"
2836 asyncts_filter_deps="avresample"
2837 atempo_filter_deps="avcodec"
2838 atempo_filter_select="rdft"
2839 azmq_filter_deps="libzmq"
2840 blackframe_filter_deps="gpl"
2841 boxblur_filter_deps="gpl"
2842 bs2b_filter_deps="libbs2b"
2843 colormatrix_filter_deps="gpl"
2844 cover_rect_filter_deps="avcodec avformat gpl"
2845 cropdetect_filter_deps="gpl"
2846 delogo_filter_deps="gpl"
2847 deshake_filter_select="pixelutils"
2848 drawtext_filter_deps="libfreetype"
2849 dynaudnorm_filter_deps="copysign erf"
2850 ebur128_filter_deps="gpl"
2851 eq_filter_deps="gpl"
2852 fftfilt_filter_deps="avcodec"
2853 fftfilt_filter_select="rdft"
2854 flite_filter_deps="libflite"
2855 find_rect_filter_deps="avcodec avformat gpl"
2856 frei0r_filter_deps="frei0r dlopen"
2857 frei0r_src_filter_deps="frei0r dlopen"
2858 fspp_filter_deps="gpl"
2859 geq_filter_deps="gpl"
2860 histeq_filter_deps="gpl"
2861 hqdn3d_filter_deps="gpl"
2862 interlace_filter_deps="gpl"
2863 kerndeint_filter_deps="gpl"
2864 ladspa_filter_deps="ladspa dlopen"
2865 mcdeint_filter_deps="avcodec gpl"
2866 movie_filter_deps="avcodec avformat"
2867 mpdecimate_filter_deps="gpl"
2868 mpdecimate_filter_select="pixelutils"
2869 mptestsrc_filter_deps="gpl"
2870 negate_filter_deps="lut_filter"
2871 perspective_filter_deps="gpl"
2872 pp7_filter_deps="gpl"
2873 ocr_filter_deps="libtesseract"
2874 ocv_filter_deps="libopencv"
2875 owdenoise_filter_deps="gpl"
2876 pan_filter_deps="swresample"
2877 phase_filter_deps="gpl"
2878 pp_filter_deps="gpl postproc"
2879 pullup_filter_deps="gpl"
2880 removelogo_filter_deps="avcodec avformat swscale"
2881 repeatfields_filter_deps="gpl"
2882 resample_filter_deps="avresample"
2883 rubberband_filter_deps="librubberband"
2884 sab_filter_deps="gpl swscale"
2885 scale_filter_deps="swscale"
2886 scale2ref_filter_deps="swscale"
2887 select_filter_select="pixelutils"
2888 smartblur_filter_deps="gpl swscale"
2889 showcqt_filter_deps="avcodec avformat swscale"
2890 showcqt_filter_select="fft"
2891 showfreqs_filter_deps="avcodec"
2892 showfreqs_filter_select="fft"
2893 showspectrum_filter_deps="avcodec"
2894 showspectrum_filter_select="rdft"
2895 sofalizer_filter_deps="netcdf avcodec"
2896 sofalizer_filter_select="fft"
2897 spp_filter_deps="gpl avcodec"
2898 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2899 stereo3d_filter_deps="gpl"
2900 subtitles_filter_deps="avformat avcodec libass"
2901 super2xsai_filter_deps="gpl"
2902 tinterlace_filter_deps="gpl"
2903 vidstabdetect_filter_deps="libvidstab"
2904 vidstabtransform_filter_deps="libvidstab"
2905 pixfmts_super2xsai_test_deps="super2xsai_filter"
2906 tinterlace_merge_test_deps="tinterlace_filter"
2907 tinterlace_pad_test_deps="tinterlace_filter"
2908 uspp_filter_deps="gpl avcodec"
2909 zmq_filter_deps="libzmq"
2910 zoompan_filter_deps="swscale"
2911 zscale_filter_deps="libzimg"
2912
2913 # examples
2914 avio_reading="avformat avcodec avutil"
2915 avio_dir_cmd="avformat avutil"
2916 avcodec_example_deps="avcodec avutil"
2917 decoding_encoding_example_deps="avcodec avformat avutil"
2918 demuxing_decoding_example_deps="avcodec avformat avutil"
2919 extract_mvs_example_deps="avcodec avformat avutil"
2920 filter_audio_example_deps="avfilter avutil"
2921 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2922 filtering_video_example_deps="avfilter avcodec avformat avutil"
2923 metadata_example_deps="avformat avutil"
2924 muxing_example_deps="avcodec avformat avutil swscale"
2925 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2926 remuxing_example_deps="avcodec avformat avutil"
2927 resampling_audio_example_deps="avutil swresample"
2928 scaling_video_example_deps="avutil swscale"
2929 transcode_aac_example_deps="avcodec avformat swresample"
2930 transcoding_example_deps="avfilter avcodec avformat avutil"
2931
2932 # libraries, in linking order
2933 avcodec_deps="avutil"
2934 avdevice_deps="avformat avcodec avutil"
2935 avfilter_deps="avutil"
2936 avformat_deps="avcodec avutil"
2937 avresample_deps="avutil"
2938 postproc_deps="avutil gpl"
2939 swresample_deps="avutil"
2940 swscale_deps="avutil"
2941
2942 # programs
2943 ffmpeg_deps="avcodec avfilter avformat swresample"
2944 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2945                null_filter
2946                setpts_filter trim_filter"
2947 ffplay_deps="avcodec avformat swscale swresample sdl"
2948 ffplay_libs='$sdl_libs'
2949 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2950 ffprobe_deps="avcodec avformat"
2951 ffserver_deps="avformat fork sarestart"
2952 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2953
2954 # documentation
2955 podpages_deps="perl"
2956 manpages_deps="perl pod2man"
2957 htmlpages_deps="perl"
2958 htmlpages_deps_any="makeinfo_html texi2html"
2959 txtpages_deps="perl makeinfo"
2960 doc_deps_any="manpages htmlpages podpages txtpages"
2961
2962 # default parameters
2963
2964 logfile="config.log"
2965
2966 # installation paths
2967 prefix_default="/usr/local"
2968 bindir_default='${prefix}/bin'
2969 datadir_default='${prefix}/share/ffmpeg'
2970 docdir_default='${prefix}/share/doc/ffmpeg'
2971 incdir_default='${prefix}/include'
2972 libdir_default='${prefix}/lib'
2973 mandir_default='${prefix}/share/man'
2974
2975 # toolchain
2976 ar_default="ar"
2977 cc_default="gcc"
2978 cxx_default="g++"
2979 host_cc_default="gcc"
2980 cp_f="cp -f"
2981 doxygen_default="doxygen"
2982 install="install"
2983 ln_s="ln -s -f"
2984 nm_default="nm -g"
2985 objformat="elf"
2986 pkg_config_default=pkg-config
2987 ranlib_default="ranlib"
2988 strip_default="strip"
2989 yasmexe_default="yasm"
2990 windres_default="windres"
2991
2992 # OS
2993 target_os_default=$(tolower $(uname -s))
2994 host_os=$target_os_default
2995
2996 # machine
2997 if test "$target_os_default" = aix; then
2998     arch_default=$(uname -p)
2999     strip_default="strip -X32_64"
3000 else
3001     arch_default=$(uname -m)
3002 fi
3003 cpu="generic"
3004 intrinsics="none"
3005
3006 # configurable options
3007 enable $PROGRAM_LIST
3008 enable $DOCUMENT_LIST
3009 enable $EXAMPLE_LIST
3010 enable $(filter_out avresample $LIBRARY_LIST)
3011 enable stripping
3012
3013 enable asm
3014 enable debug
3015 enable doc
3016 enable faan faandct faanidct
3017 enable optimizations
3018 enable runtime_cpudetect
3019 enable safe_bitstream_reader
3020 enable static
3021 enable swscale_alpha
3022 enable valgrind_backtrace
3023
3024 sws_max_filter_size_default=256
3025 set_default sws_max_filter_size
3026
3027 # Enable hwaccels by default.
3028 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3029 enable xlib
3030
3031 # build settings
3032 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3033 LIBPREF="lib"
3034 LIBSUF=".a"
3035 FULLNAME='$(NAME)$(BUILDSUF)'
3036 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3037 SLIBPREF="lib"
3038 SLIBSUF=".so"
3039 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3040 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3041 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3042 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3043 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3044 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3045
3046 asflags_filter=echo
3047 cflags_filter=echo
3048 ldflags_filter=echo
3049
3050 AS_C='-c'
3051 AS_O='-o $@'
3052 CC_C='-c'
3053 CC_E='-E -o $@'
3054 CC_O='-o $@'
3055 CXX_C='-c'
3056 CXX_O='-o $@'
3057 OBJCC_C='-c'
3058 OBJCC_E='-E -o $@'
3059 OBJCC_O='-o $@'
3060 LD_O='-o $@'
3061 LD_LIB='-l%'
3062 LD_PATH='-L'
3063 HOSTCC_C='-c'
3064 HOSTCC_E='-E -o $@'
3065 HOSTCC_O='-o $@'
3066 HOSTLD_O='-o $@'
3067
3068 host_libs='-lm'
3069 host_cflags_filter=echo
3070 host_ldflags_filter=echo
3071
3072 target_path='$(CURDIR)'
3073
3074 # since the object filename is not given with the -MM flag, the compiler
3075 # is only able to print the basename, and we must add the path ourselves
3076 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3077 DEPFLAGS='-MM'
3078
3079 # find source path
3080 if test -f configure; then
3081     source_path=.
3082 else
3083     source_path=$(cd $(dirname "$0"); pwd)
3084     case "$source_path" in
3085         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3086     esac
3087     test -e "$source_path/config.h" &&
3088         die "Out of tree builds are impossible with config.h in source dir."
3089 fi
3090
3091 for v in "$@"; do
3092     r=${v#*=}
3093     l=${v%"$r"}
3094     r=$(sh_quote "$r")
3095     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3096 done
3097
3098 find_things(){
3099     thing=$1
3100     pattern=$2
3101     file=$source_path/$3
3102     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3103 }
3104
3105 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3106 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3107 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3108 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3109 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3110 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3111 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3112 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3113 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3114 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3115 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3116
3117 ALL_COMPONENTS="
3118     $BSF_LIST
3119     $DECODER_LIST
3120     $DEMUXER_LIST
3121     $ENCODER_LIST
3122     $FILTER_LIST
3123     $HWACCEL_LIST
3124     $INDEV_LIST
3125     $MUXER_LIST
3126     $OUTDEV_LIST
3127     $PARSER_LIST
3128     $PROTOCOL_LIST
3129 "
3130
3131 for n in $COMPONENT_LIST; do
3132     v=$(toupper ${n%s})_LIST
3133     eval enable \$$v
3134     eval ${n}_if_any="\$$v"
3135 done
3136
3137 enable $ARCH_EXT_LIST
3138
3139 die_unknown(){
3140     echo "Unknown option \"$1\"."
3141     echo "See $0 --help for available options."
3142     exit 1
3143 }
3144
3145 print_in_columns() {
3146     cols=$(expr $ncols / 24)
3147     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3148 }
3149
3150 show_list() {
3151     suffix=_$1
3152     shift
3153     echo $* | sed s/$suffix//g | print_in_columns
3154     exit 0
3155 }
3156
3157 rand_list(){
3158     IFS=', '
3159     set -- $*
3160     unset IFS
3161     for thing; do
3162         comp=${thing%:*}
3163         prob=${thing#$comp}
3164         prob=${prob#:}
3165         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3166         echo "prob ${prob:-0.5}"
3167         printf '%s\n' $comp
3168     done
3169 }
3170
3171 do_random(){
3172     action=$1
3173     shift
3174     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3175     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3176 }
3177
3178 for opt do
3179     optval="${opt#*=}"
3180     case "$opt" in
3181         --extra-ldflags=*)
3182             add_ldflags $optval
3183         ;;
3184         --extra-ldexeflags=*)
3185             add_ldexeflags $optval
3186         ;;
3187         --extra-ldlibflags=*)
3188             add_ldlibflags $optval
3189         ;;
3190         --extra-libs=*)
3191             add_extralibs $optval
3192         ;;
3193         --disable-devices)
3194             disable $INDEV_LIST $OUTDEV_LIST
3195         ;;
3196         --enable-debug=*)
3197             debuglevel="$optval"
3198         ;;
3199         --disable-programs)
3200             disable $PROGRAM_LIST
3201         ;;
3202         --disable-everything)
3203             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3204         ;;
3205         --disable-all)
3206             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3207             disable $LIBRARY_LIST $PROGRAM_LIST doc
3208             enable avutil
3209         ;;
3210         --enable-random|--disable-random)
3211             action=${opt%%-random}
3212             do_random ${action#--} $COMPONENT_LIST
3213         ;;
3214         --enable-random=*|--disable-random=*)
3215             action=${opt%%-random=*}
3216             do_random ${action#--} $optval
3217         ;;
3218         --enable-*=*|--disable-*=*)
3219             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3220             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3221             eval list=\$$(toupper $thing)_LIST
3222             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3223             list=$(filter "$name" $list)
3224             [ "$list" = "" ] && warn "Option $opt did not match anything"
3225             $action $list
3226         ;;
3227         --enable-?*|--disable-?*)
3228             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3229             if is_in $option $COMPONENT_LIST; then
3230                 test $action = disable && action=unset
3231                 eval $action \$$(toupper ${option%s})_LIST
3232             elif is_in $option $CMDLINE_SELECT; then
3233                 $action $option
3234             else
3235                 die_unknown $opt
3236             fi
3237         ;;
3238         --list-*)
3239             NAME="${opt#--list-}"
3240             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3241             NAME=${NAME%s}
3242             eval show_list $NAME \$$(toupper $NAME)_LIST
3243         ;;
3244         --help|-h) show_help
3245         ;;
3246         --fatal-warnings) enable fatal_warnings
3247         ;;
3248         *)
3249             optname="${opt%%=*}"
3250             optname="${optname#--}"
3251             optname=$(echo "$optname" | sed 's/-/_/g')
3252             if is_in $optname $CMDLINE_SET; then
3253                 eval $optname='$optval'
3254             elif is_in $optname $CMDLINE_APPEND; then
3255                 append $optname "$optval"
3256             else
3257                 die_unknown $opt
3258             fi
3259         ;;
3260     esac
3261 done
3262
3263 for e in $env; do
3264     eval "export $e"
3265 done
3266
3267 disabled logging && logfile=/dev/null
3268
3269 # Disable all the library-specific components if the library itself
3270 # is disabled, see AVCODEC_LIST and following _LIST variables.
3271
3272 disable_components(){
3273     disabled ${1} && disable $(
3274         eval components="\$$(toupper ${1})_COMPONENTS"
3275         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3276     )
3277 }
3278
3279 map 'disable_components $v' $LIBRARY_LIST
3280
3281 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3282 set >> $logfile
3283
3284 test -n "$valgrind" && toolchain="valgrind-memcheck"
3285
3286 case "$toolchain" in
3287     clang-asan)
3288         cc_default="clang"
3289         add_cflags  -fsanitize=address
3290         add_ldflags -fsanitize=address
3291     ;;
3292     clang-tsan)
3293         cc_default="clang"
3294         add_cflags  -fsanitize=thread -pie
3295         add_ldflags -fsanitize=thread -pie
3296     ;;
3297     clang-usan)
3298         cc_default="clang"
3299         add_cflags  -fsanitize=undefined
3300         add_ldflags -fsanitize=undefined
3301     ;;
3302     gcc-asan)
3303         cc_default="gcc"
3304         add_cflags  -fsanitize=address
3305         add_ldflags -fsanitize=address
3306     ;;
3307     gcc-tsan)
3308         cc_default="gcc"
3309         add_cflags  -fsanitize=thread -pie -fPIC
3310         add_ldflags -fsanitize=thread -pie -fPIC
3311     ;;
3312     gcc-usan)
3313         cc_default="gcc"
3314         add_cflags  -fsanitize=undefined
3315         add_ldflags -fsanitize=undefined
3316     ;;
3317     valgrind-massif)
3318         target_exec_default=${valgrind:-"valgrind"}
3319         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"
3320     ;;
3321     valgrind-memcheck)
3322         target_exec_default=${valgrind:-"valgrind"}
3323         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3324     ;;
3325     msvc)
3326         # Check whether the current MSVC version needs the C99 converter.
3327         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3328         # support enough of C99 to build ffmpeg. Default to the new
3329         # behaviour if the regexp was unable to match anything, since this
3330         # successfully parses the version number of existing supported
3331         # versions that require the converter (MSVC 2010 and 2012).
3332         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3333         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3334             cc_default="cl"
3335         else
3336             cc_default="c99wrap cl"
3337         fi
3338         ld_default="$source_path/compat/windows/mslink"
3339         nm_default="dumpbin -symbols"
3340         ar_default="lib"
3341         case "$arch" in
3342         arm*)
3343             as_default="armasm"
3344             ;;
3345         esac
3346         target_os_default="win32"
3347         # Use a relative path for TMPDIR. This makes sure all the
3348         # ffconf temp files are written with a relative path, avoiding
3349         # issues with msys/win32 path conversion for MSVC parameters
3350         # such as -Fo<file> or -out:<file>.
3351         TMPDIR=.
3352     ;;
3353     icl)
3354         cc_default="icl"
3355         ld_default="xilink"
3356         nm_default="dumpbin -symbols"
3357         ar_default="xilib"
3358         target_os_default="win32"
3359         TMPDIR=.
3360     ;;
3361     gcov)
3362         add_cflags  -fprofile-arcs -ftest-coverage
3363         add_ldflags -fprofile-arcs -ftest-coverage
3364     ;;
3365     hardened)
3366         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3367         add_cflags   -fno-strict-overflow -fstack-protector-all
3368         add_ldflags  -Wl,-z,relro -Wl,-z,now
3369     ;;
3370     ?*)
3371         die "Unknown toolchain $toolchain"
3372     ;;
3373 esac
3374
3375 test -n "$cross_prefix" && enable cross_compile
3376
3377 if enabled cross_compile; then
3378     test -n "$arch" && test -n "$target_os" ||
3379         die "Must specify target arch and OS when cross-compiling"
3380 fi
3381
3382 ar_default="${cross_prefix}${ar_default}"
3383 cc_default="${cross_prefix}${cc_default}"
3384 cxx_default="${cross_prefix}${cxx_default}"
3385 nm_default="${cross_prefix}${nm_default}"
3386 pkg_config_default="${cross_prefix}${pkg_config_default}"
3387 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3388     ranlib_default="${cross_prefix}${ranlib_default} -D"
3389 else
3390     ranlib_default="${cross_prefix}${ranlib_default}"
3391 fi
3392 strip_default="${cross_prefix}${strip_default}"
3393 windres_default="${cross_prefix}${windres_default}"
3394
3395 sysinclude_default="${sysroot}/usr/include"
3396
3397 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3398     target_exec target_os yasmexe
3399 enabled cross_compile || host_cc_default=$cc
3400 set_default host_cc
3401
3402 pkg_config_fail_message=""
3403 if ! $pkg_config --version >/dev/null 2>&1; then
3404     warn "$pkg_config not found, library detection may fail."
3405     pkg_config=false
3406 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3407     pkg_config_fail_message="
3408 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3409 fi
3410
3411 if test $doxygen != $doxygen_default && \
3412   ! $doxygen --version >/dev/null 2>&1; then
3413     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3414 fi
3415
3416 exesuf() {
3417     case $1 in
3418         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3419     esac
3420 }
3421
3422 EXESUF=$(exesuf $target_os)
3423 HOSTEXESUF=$(exesuf $host_os)
3424
3425 # set temporary file name
3426 : ${TMPDIR:=$TEMPDIR}
3427 : ${TMPDIR:=$TMP}
3428 : ${TMPDIR:=/tmp}
3429
3430 if [ -n "$tempprefix" ] ; then
3431     mktemp(){
3432         echo $tempprefix.${HOSTNAME}.${UID}
3433     }
3434 elif ! check_cmd mktemp -u XXXXXX; then
3435     # simple replacement for missing mktemp
3436     # NOT SAFE FOR GENERAL USE
3437     mktemp(){
3438         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3439     }
3440 fi
3441
3442 tmpfile(){
3443     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3444         (set -C; exec > $tmp) 2>/dev/null ||
3445         die "Unable to create temporary file in $TMPDIR."
3446     append TMPFILES $tmp
3447     eval $1=$tmp
3448 }
3449
3450 trap 'rm -f -- $TMPFILES' EXIT
3451
3452 tmpfile TMPASM .asm
3453 tmpfile TMPC   .c
3454 tmpfile TMPCPP .cpp
3455 tmpfile TMPE   $EXESUF
3456 tmpfile TMPH   .h
3457 tmpfile TMPM   .m
3458 tmpfile TMPO   .o
3459 tmpfile TMPS   .S
3460 tmpfile TMPSH  .sh
3461 tmpfile TMPV   .ver
3462
3463 unset -f mktemp
3464
3465 chmod +x $TMPE
3466
3467 # make sure we can execute files in $TMPDIR
3468 cat > $TMPSH 2>> $logfile <<EOF
3469 #! /bin/sh
3470 EOF
3471 chmod +x $TMPSH >> $logfile 2>&1
3472 if ! $TMPSH >> $logfile 2>&1; then
3473     cat <<EOF
3474 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3475 variable to another directory and make sure that it is not mounted noexec.
3476 EOF
3477     die "Sanity test failed."
3478 fi
3479
3480 armasm_flags(){
3481     for flag; do
3482         case $flag in
3483             # Filter out MSVC cl.exe options from cflags that shouldn't
3484             # be passed to gas-preprocessor
3485             -M[TD]*)                                            ;;
3486             *)                  echo $flag                      ;;
3487         esac
3488    done
3489 }
3490
3491 ccc_flags(){
3492     for flag; do
3493         case $flag in
3494             -std=c99)           echo -c99                       ;;
3495             -mcpu=*)            echo -arch ${flag#*=}           ;;
3496             -mieee)             echo -ieee                      ;;
3497             -O*|-fast)          echo $flag                      ;;
3498             -fno-math-errno)    echo -assume nomath_errno       ;;
3499             -g)                 echo -g3                        ;;
3500             -Wall)              echo -msg_enable level2         ;;
3501             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3502             -Wl,*)              echo $flag                      ;;
3503             -f*|-W*)                                            ;;
3504             *)                  echo $flag                      ;;
3505         esac
3506    done
3507 }
3508
3509 cparser_flags(){
3510     for flag; do
3511         case $flag in
3512             -Wno-switch)             echo -Wno-switch-enum ;;
3513             -Wno-format-zero-length) ;;
3514             -Wdisabled-optimization) ;;
3515             -Wno-pointer-sign)       echo -Wno-other ;;
3516             *)                       echo $flag ;;
3517         esac
3518     done
3519 }
3520
3521 msvc_common_flags(){
3522     for flag; do
3523         case $flag in
3524             # In addition to specifying certain flags under the compiler
3525             # specific filters, they must be specified here as well or else the
3526             # generic catch all at the bottom will print the original flag.
3527             -Wall)                ;;
3528             -std=c99)             ;;
3529             # Common flags
3530             -fomit-frame-pointer) ;;
3531             -g)                   echo -Z7 ;;
3532             -fno-math-errno)      ;;
3533             -fno-common)          ;;
3534             -fno-signed-zeros)    ;;
3535             -fPIC)                ;;
3536             -mthumb)              ;;
3537             -march=*)             ;;
3538             -lz)                  echo zlib.lib ;;
3539             -lavifil32)           echo vfw32.lib ;;
3540             -lavicap32)           echo vfw32.lib user32.lib ;;
3541             -l*)                  echo ${flag#-l}.lib ;;
3542             -LARGEADDRESSAWARE)   echo $flag ;;
3543             -L*)                  echo -libpath:${flag#-L} ;;
3544             *)                    echo $flag ;;
3545         esac
3546     done
3547 }
3548
3549 msvc_flags(){
3550     msvc_common_flags "$@"
3551     for flag; do
3552         case $flag in
3553             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3554                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3555                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3556                                        -wd4307 \
3557                                        -wd4273 -wd4554 -wd4701 ;;
3558         esac
3559     done
3560 }
3561
3562 icl_flags(){
3563     msvc_common_flags "$@"
3564     for flag; do
3565         case $flag in
3566             # Despite what Intel's documentation says -Wall, which is supported
3567             # on Windows, does enable remarks so disable them here.
3568             -Wall)                echo $flag -Qdiag-disable:remark ;;
3569             -std=c99)             echo -Qstd=c99 ;;
3570             -flto)                echo -ipo ;;
3571         esac
3572     done
3573 }
3574
3575 icc_flags(){
3576     for flag; do
3577         case $flag in
3578             -flto)                echo -ipo ;;
3579             *)                    echo $flag ;;
3580         esac
3581     done
3582 }
3583
3584 pgi_flags(){
3585     for flag; do
3586         case $flag in
3587             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3588             -fomit-frame-pointer) echo -Mnoframe ;;
3589             -g)                   echo -gopt ;;
3590             *)                    echo $flag ;;
3591         esac
3592     done
3593 }
3594
3595 suncc_flags(){
3596     for flag; do
3597         case $flag in
3598             -march=*|-mcpu=*)
3599                 case "${flag#*=}" in
3600                     native)                   echo -xtarget=native       ;;
3601                     v9|niagara)               echo -xarch=sparc          ;;
3602                     ultrasparc)               echo -xarch=sparcvis       ;;
3603                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3604                     i586|pentium)             echo -xchip=pentium        ;;
3605                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3606                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3607                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3608                     pentium4*)          echo -xtarget=pentium4           ;;
3609                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3610                     *-sse3)             echo -xarch=sse3                 ;;
3611                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3612                     bonnell)                   echo -xarch=ssse3         ;;
3613                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3614                     westmere)                  echo -xtarget=westmere    ;;
3615                     silvermont)                echo -xarch=sse4_2        ;;
3616                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3617                     core-avx*|ivybridge|haswell|broadwell)
3618                                                echo -xarch=avx           ;;
3619                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3620                     btver1)                    echo -xarch=amdsse4a      ;;
3621                     btver2|bdver*)             echo -xarch=avx           ;;
3622                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3623                     k8|opteron|athlon64|athlon-fx)
3624                                                echo -xarch=sse2a         ;;
3625                     athlon*)                   echo -xarch=pentium_proa  ;;
3626                 esac
3627                 ;;
3628             -std=c99)             echo -xc99              ;;
3629             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3630             -fPIC)                echo -KPIC -xcode=pic32 ;;
3631             -W*,*)                echo $flag              ;;
3632             -f*-*|-W*|-mimpure-text)                      ;;
3633             -shared)              echo -G                 ;;
3634             *)                    echo $flag              ;;
3635         esac
3636     done
3637 }
3638
3639 tms470_flags(){
3640     for flag; do
3641         case $flag in
3642             -march=*|-mcpu=*)
3643                 case "${flag#*=}" in
3644                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3645                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3646                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3647                     armv6*|arm11*)          echo -mv=6   ;;
3648                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3649                                             echo -mv=5e  ;;
3650                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3651                 esac
3652                 ;;
3653             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3654             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3655             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3656             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3657             -msoft-float)   echo --float_support=vfplib       ;;
3658             -O[0-3]|-mf=*)  echo $flag                        ;;
3659             -g)             echo -g -mn                       ;;
3660             -pds=*)         echo $flag                        ;;
3661             -D*|-I*)        echo $flag                        ;;
3662             --gcc|--abi=*)  echo $flag                        ;;
3663             -me)            echo $flag                        ;;
3664         esac
3665     done
3666 }
3667
3668 probe_cc(){
3669     pfx=$1
3670     _cc=$2
3671     first=$3
3672
3673     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3674     unset _ld_o _ldflags _ld_lib _ld_path
3675     unset _depflags _DEPCMD _DEPFLAGS
3676     _flags_filter=echo
3677
3678     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3679         true # no-op to avoid reading stdin in following checks
3680     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3681         _type=llvm_gcc
3682         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3683         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3684         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3685         _cflags_speed='-O3'
3686         _cflags_size='-Os'
3687     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3688         _type=gcc
3689         gcc_version=$($_cc --version | head -n1)
3690         gcc_basever=$($_cc -dumpversion)
3691         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3692         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3693         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3694         case $gcc_basever in
3695             2*) ;;
3696             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3697         esac
3698         if [ "$first" = true ]; then
3699             case $gcc_basever in
3700                 4.2*)
3701                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3702             esac
3703         fi
3704         _cflags_speed='-O3'
3705         _cflags_size='-Os'
3706     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3707         _type=icc
3708         _ident=$($_cc --version | head -n1)
3709         _depflags='-MMD'
3710         _cflags_speed='-O3'
3711         _cflags_size='-Os'
3712         _cflags_noopt='-O1'
3713         _flags_filter=icc_flags
3714     elif $_cc -v 2>&1 | grep -q xlc; then
3715         _type=xlc
3716         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3717         _cflags_speed='-O5'
3718         _cflags_size='-O5 -qcompact'
3719     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3720         _type=ccc
3721         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3722         _DEPFLAGS='-M'
3723         _cflags_speed='-fast'
3724         _cflags_size='-O1'
3725         _flags_filter=ccc_flags
3726     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3727         test -d "$sysroot" || die "No valid sysroot specified."
3728         _type=armcc
3729         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3730         armcc_conf="$PWD/armcc.conf"
3731         $_cc --arm_linux_configure                 \
3732              --arm_linux_config_file="$armcc_conf" \
3733              --configure_sysroot="$sysroot"        \
3734              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3735              die "Error creating armcc configuration file."
3736         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3737         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3738         as_default="${cross_prefix}gcc"
3739         _depflags='-MMD'
3740         _cflags_speed='-O3'
3741         _cflags_size='-Os'
3742     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3743         _type=tms470
3744         _ident=$($_cc -version | head -n1 | tr -s ' ')
3745         _flags='--gcc --abi=eabi -me'
3746         _cc_e='-ppl -fe=$@'
3747         _cc_o='-fe=$@'
3748         _depflags='-ppa -ppd=$(@:.o=.d)'
3749         _cflags_speed='-O3 -mf=5'
3750         _cflags_size='-O3 -mf=2'
3751         _flags_filter=tms470_flags
3752     elif $_cc -v 2>&1 | grep -q clang; then
3753         _type=clang
3754         _ident=$($_cc --version 2>/dev/null | head -n1)
3755         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3756         _cflags_speed='-O3'
3757         _cflags_size='-Os'
3758     elif $_cc -V 2>&1 | grep -q Sun; then
3759         _type=suncc
3760         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3761         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3762         _DEPFLAGS='-xM1 -xc99'
3763         _ldflags='-std=c99'
3764         _cflags_speed='-O5'
3765         _cflags_size='-O5 -xspace'
3766         _flags_filter=suncc_flags
3767     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3768         _type=pathscale
3769         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3770         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3771         _cflags_speed='-O2'
3772         _cflags_size='-Os'
3773         _flags_filter='filter_out -Wdisabled-optimization'
3774     elif $_cc -v 2>&1 | grep -q Open64; then
3775         _type=open64
3776         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3777         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3778         _cflags_speed='-O2'
3779         _cflags_size='-Os'
3780         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3781     elif $_cc -V 2>&1 | grep -q Portland; then
3782         _type=pgi
3783         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3784         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3785         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3786         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3787         _cflags_noopt="-O"
3788         _flags_filter=pgi_flags
3789     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3790         _type=armasm
3791         _ident=$($_cc | head -n1)
3792         # 4509: "This form of conditional instruction is deprecated"
3793         _flags="-nologo -ignore 4509"
3794         _flags_filter=armasm_flags
3795     elif $_cc 2>&1 | grep -q Intel; then
3796         _type=icl
3797         _ident=$($_cc 2>&1 | head -n1)
3798         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3799         # Not only is O3 broken on 13.x+ but it is slower on all previous
3800         # versions (tested) as well.
3801         _cflags_speed="-O2"
3802         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3803         if $_cc 2>&1 | grep -q Linker; then
3804             _ld_o='-out:$@'
3805         else
3806             _ld_o='-Fe$@'
3807         fi
3808         _cc_o='-Fo$@'
3809         _cc_e='-P'
3810         _flags_filter=icl_flags
3811         _ld_lib='lib%.a'
3812         _ld_path='-libpath:'
3813         # -Qdiag-error to make icl error when seeing certain unknown arguments
3814         _flags='-nologo -Qdiag-error:4044,10157'
3815         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3816         # with MSVC which enables it by default.
3817         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3818         disable stripping
3819     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3820         _type=msvc
3821         _ident=$($_cc 2>&1 | head -n1)
3822         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3823         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3824         _cflags_speed="-O2"
3825         _cflags_size="-O1"
3826         if $_cc -nologo- 2>&1 | grep -q Linker; then
3827             _ld_o='-out:$@'
3828         else
3829             _ld_o='-Fe$@'
3830         fi
3831         _cc_o='-Fo$@'
3832         _cc_e='-P -Fi$@'
3833         _flags_filter=msvc_flags
3834         _ld_lib='lib%.a'
3835         _ld_path='-libpath:'
3836         _flags='-nologo'
3837         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3838         disable stripping
3839     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3840         _type=cparser
3841         _ident=$($_cc --version | head -n1)
3842         _depflags='-MMD'
3843         _cflags_speed='-O4'
3844         _cflags_size='-O2'
3845         _flags_filter=cparser_flags
3846     fi
3847
3848     eval ${pfx}_type=\$_type
3849     eval ${pfx}_ident=\$_ident
3850 }
3851
3852 set_ccvars(){
3853     eval ${1}_C=\${_cc_c-\${${1}_C}}
3854     eval ${1}_E=\${_cc_e-\${${1}_E}}
3855     eval ${1}_O=\${_cc_o-\${${1}_O}}
3856
3857     if [ -n "$_depflags" ]; then
3858         eval ${1}_DEPFLAGS=\$_depflags
3859     else
3860         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3861         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3862         eval DEP${1}FLAGS=\$_flags
3863     fi
3864 }
3865
3866 probe_cc cc "$cc" "true"
3867 cflags_filter=$_flags_filter
3868 cflags_speed=$_cflags_speed
3869 cflags_size=$_cflags_size
3870 cflags_noopt=$_cflags_noopt
3871 add_cflags $_flags $_cflags
3872 cc_ldflags=$_ldflags
3873 set_ccvars CC
3874
3875 probe_cc hostcc "$host_cc"
3876 host_cflags_filter=$_flags_filter
3877 add_host_cflags  $_flags $_cflags
3878 set_ccvars HOSTCC
3879
3880 test -n "$cc_type" && enable $cc_type ||
3881     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3882
3883 : ${as_default:=$cc}
3884 : ${objcc_default:=$cc}
3885 : ${dep_cc_default:=$cc}
3886 : ${ld_default:=$cc}
3887 : ${host_ld_default:=$host_cc}
3888 set_default ar as objcc dep_cc ld host_ld windres
3889
3890 probe_cc as "$as"
3891 asflags_filter=$_flags_filter
3892 add_asflags $_flags $_cflags
3893 set_ccvars AS
3894
3895 probe_cc objcc "$objcc"
3896 objcflags_filter=$_flags_filter
3897 add_objcflags $_flags $_cflags
3898 set_ccvars OBJC
3899
3900 probe_cc ld "$ld"
3901 ldflags_filter=$_flags_filter
3902 add_ldflags $_flags $_ldflags
3903 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3904 LD_O=${_ld_o-$LD_O}
3905 LD_LIB=${_ld_lib-$LD_LIB}
3906 LD_PATH=${_ld_path-$LD_PATH}
3907
3908 probe_cc hostld "$host_ld"
3909 host_ldflags_filter=$_flags_filter
3910 add_host_ldflags $_flags $_ldflags
3911 HOSTLD_O=${_ld_o-$HOSTLD_O}
3912
3913 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3914     probe_cc depcc "$dep_cc"
3915     CCDEP=${_DEPCMD:-$DEPCMD}
3916     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3917     DEPCCFLAGS=$_flags
3918 fi
3919
3920 if $ar 2>&1 | grep -q Microsoft; then
3921     arflags="-nologo"
3922     ar_o='-out:$@'
3923 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3924     arflags="rq"
3925     ar_o='$@'
3926 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3927     arflags='-Xany -r -c'
3928     ar_o='$@'
3929 elif $ar 2>&1 | grep -q "\[D\] "; then
3930     arflags="rcD"
3931     ar_o='$@'
3932 else
3933     arflags="rc"
3934     ar_o='$@'
3935 fi
3936
3937 add_cflags $extra_cflags
3938 add_cxxflags $extra_cxxflags
3939 add_objcflags $extra_objcflags
3940 add_asflags $extra_cflags
3941
3942 if test -n "$sysroot"; then
3943     case "$cc_type" in
3944         gcc|llvm_gcc|clang)
3945             add_cppflags --sysroot="$sysroot"
3946             add_ldflags --sysroot="$sysroot"
3947 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3948             add_cppflags -isysroot "$sysroot"
3949             add_ldflags -isysroot "$sysroot"
3950         ;;
3951         tms470)
3952             add_cppflags -I"$sysinclude"
3953             add_ldflags  --sysroot="$sysroot"
3954         ;;
3955     esac
3956 fi
3957
3958 if test "$cpu" = host; then
3959     enabled cross_compile &&
3960         die "--cpu=host makes no sense when cross-compiling."
3961
3962     case "$cc_type" in
3963         gcc|llvm_gcc)
3964             check_native(){
3965                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3966                 sed -n "/cc1.*$1=/{
3967                             s/.*$1=\\([^ ]*\\).*/\\1/
3968                             p
3969                             q
3970                         }" $TMPE
3971             }
3972             cpu=$(check_native -march || check_native -mcpu)
3973         ;;
3974     esac
3975
3976     test "${cpu:-host}" = host &&
3977         die "--cpu=host not supported with compiler $cc"
3978 fi
3979
3980 # Deal with common $arch aliases
3981 case "$arch" in
3982     aarch64|arm64)
3983         arch="aarch64"
3984     ;;
3985     arm*|iPad*|iPhone*)
3986         arch="arm"
3987     ;;
3988     mips*|IP*)
3989         arch="mips"
3990     ;;
3991     parisc*|hppa*)
3992         arch="parisc"
3993     ;;
3994     "Power Macintosh"|ppc*|powerpc*)
3995         arch="ppc"
3996     ;;
3997     s390|s390x)
3998         arch="s390"
3999     ;;
4000     sh4|sh)
4001         arch="sh4"
4002     ;;
4003     sun4u|sparc*)
4004         arch="sparc"
4005     ;;
4006     tilegx|tile-gx)
4007         arch="tilegx"
4008     ;;
4009     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4010         arch="x86"
4011     ;;
4012 esac
4013
4014 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4015 enable $arch
4016
4017 # Add processor-specific flags
4018 if enabled aarch64; then
4019
4020     case $cpu in
4021         armv*)
4022             cpuflags="-march=$cpu"
4023         ;;
4024         *)
4025             cpuflags="-mcpu=$cpu"
4026         ;;
4027     esac
4028
4029 elif enabled alpha; then
4030
4031     cpuflags="-mcpu=$cpu"
4032
4033 elif enabled arm; then
4034
4035     check_arm_arch() {
4036         check_cpp_condition stddef.h \
4037             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4038             $cpuflags
4039     }
4040
4041     probe_arm_arch() {
4042         if   check_arm_arch 4;        then echo armv4;
4043         elif check_arm_arch 4T;       then echo armv4t;
4044         elif check_arm_arch 5;        then echo armv5;
4045         elif check_arm_arch 5E;       then echo armv5e;
4046         elif check_arm_arch 5T;       then echo armv5t;
4047         elif check_arm_arch 5TE;      then echo armv5te;
4048         elif check_arm_arch 5TEJ;     then echo armv5te;
4049         elif check_arm_arch 6;        then echo armv6;
4050         elif check_arm_arch 6J;       then echo armv6j;
4051         elif check_arm_arch 6K;       then echo armv6k;
4052         elif check_arm_arch 6Z;       then echo armv6z;
4053         elif check_arm_arch 6ZK;      then echo armv6zk;
4054         elif check_arm_arch 6T2;      then echo armv6t2;
4055         elif check_arm_arch 7;        then echo armv7;
4056         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4057         elif check_arm_arch 7S;       then echo armv7-a;
4058         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4059         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4060         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4061         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4062         fi
4063     }
4064
4065     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4066
4067     case $cpu in
4068         armv*)
4069             cpuflags="-march=$cpu"
4070             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4071         ;;
4072         *)
4073             cpuflags="-mcpu=$cpu"
4074             case $cpu in
4075                 cortex-a*)                               subarch=armv7a  ;;
4076                 cortex-r*)                               subarch=armv7r  ;;
4077                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4078                 arm11*)                                  subarch=armv6   ;;
4079                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4080                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4081                 *)                             subarch=$(probe_arm_arch) ;;
4082             esac
4083         ;;
4084     esac
4085
4086     case "$subarch" in
4087         armv5t*)    enable fast_clz                ;;
4088         armv[6-8]*)
4089             enable fast_clz
4090             disabled fast_unaligned || enable fast_unaligned
4091             ;;
4092     esac
4093
4094 elif enabled avr32; then
4095
4096     case $cpu in
4097         ap7[02]0[0-2])
4098             subarch="avr32_ap"
4099             cpuflags="-mpart=$cpu"
4100         ;;
4101         ap)
4102             subarch="avr32_ap"
4103             cpuflags="-march=$cpu"
4104         ;;
4105         uc3[ab]*)
4106             subarch="avr32_uc"
4107             cpuflags="-mcpu=$cpu"
4108         ;;
4109         uc)
4110             subarch="avr32_uc"
4111             cpuflags="-march=$cpu"
4112         ;;
4113     esac
4114
4115 elif enabled bfin; then
4116
4117     cpuflags="-mcpu=$cpu"
4118
4119 elif enabled mips; then
4120
4121     cpuflags="-march=$cpu"
4122
4123     case $cpu in
4124         24kc)
4125             disable mips64r6
4126             disable mipsfpu
4127             disable mipsdsp
4128             disable mipsdspr2
4129             disable msa
4130         ;;
4131         24kf*)
4132             disable mips64r6
4133             disable mipsdsp
4134             disable mipsdspr2
4135             disable msa
4136         ;;
4137         24kec|34kc|1004kc)
4138             disable mips64r6
4139             disable mipsfpu
4140             disable mipsdspr2
4141             disable msa
4142         ;;
4143         24kef*|34kf*|1004kf*)
4144             disable mips64r6
4145             disable mipsdspr2
4146             disable msa
4147         ;;
4148         74kc)
4149             disable mips64r6
4150             disable mipsfpu
4151             disable msa
4152         ;;
4153         74kf)
4154             disable mips64r6
4155             disable msa
4156         ;;
4157         p5600)
4158             disable mips64r6
4159             disable mipsdsp
4160             disable mipsdspr2
4161             check_cflags "-mtune=p5600" &&
4162             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4163             add_asflags "-mfp64"
4164         ;;
4165         i6400)
4166             disable mipsdsp
4167             disable mipsdspr2
4168             check_cflags "-mtune=i6400 -mabi=64" &&
4169             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4170             check_ldflags "-mabi=64" &&
4171             add_asflags "-mfp64"
4172         ;;
4173         loongson*)
4174             disable mipsfpu
4175             disable mips32r2
4176             disable mips64r6
4177             disable mipsdsp
4178             disable mipsdspr2
4179             disable msa
4180             enable local_aligned_8 local_aligned_16 local_aligned_32
4181             enable simd_align_16
4182             enable fast_64bit
4183             enable fast_clz
4184             enable fast_cmov
4185             enable fast_unaligned
4186             disable aligned_stack
4187             case $cpu in
4188                 loongson3*)
4189                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4190                 ;;
4191                 loongson2e)
4192                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4193                 ;;
4194                 loongson2f)
4195                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4196                 ;;
4197             esac
4198         ;;
4199         generic)
4200             disable mips64r6
4201             disable msa
4202         ;;
4203         *)
4204             disable mipsfpu
4205             disable mips32r2
4206             disable mips64r6
4207             disable mipsdsp
4208             disable mipsdspr2
4209             disable msa
4210         ;;
4211     esac
4212
4213 elif enabled ppc; then
4214
4215     disable ldbrx
4216
4217     case $(tolower $cpu) in
4218         601|ppc601|powerpc601)
4219             cpuflags="-mcpu=601"
4220             disable altivec
4221         ;;
4222         603*|ppc603*|powerpc603*)
4223             cpuflags="-mcpu=603"
4224             disable altivec
4225         ;;
4226         604*|ppc604*|powerpc604*)
4227             cpuflags="-mcpu=604"
4228             disable altivec
4229         ;;
4230         g3|75*|ppc75*|powerpc75*)
4231             cpuflags="-mcpu=750"
4232             disable altivec
4233         ;;
4234         g4|745*|ppc745*|powerpc745*)
4235             cpuflags="-mcpu=7450"
4236             disable vsx
4237         ;;
4238         74*|ppc74*|powerpc74*)
4239             cpuflags="-mcpu=7400"
4240             disable vsx
4241         ;;
4242         g5|970|ppc970|powerpc970)
4243             cpuflags="-mcpu=970"
4244             disable vsx
4245         ;;
4246         power[3-6]*)
4247             cpuflags="-mcpu=$cpu"
4248             disable vsx
4249         ;;
4250         power[7-8]*)
4251             cpuflags="-mcpu=$cpu"
4252         ;;
4253         cell)
4254             cpuflags="-mcpu=cell"
4255             enable ldbrx
4256             disable vsx
4257         ;;
4258         e500mc)
4259             cpuflags="-mcpu=e500mc"
4260             disable altivec
4261         ;;
4262         e500v2)
4263             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4264             disable altivec
4265             disable dcbzl
4266         ;;
4267         e500)
4268             cpuflags="-mcpu=8540 -mhard-float"
4269             disable altivec
4270             disable dcbzl
4271         ;;
4272     esac
4273
4274 elif enabled sparc; then
4275
4276     case $cpu in
4277         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4278             cpuflags="-mcpu=$cpu"
4279         ;;
4280         ultrasparc*|niagara[234])
4281             cpuflags="-mcpu=$cpu"
4282         ;;
4283     esac
4284
4285 elif enabled x86; then
4286
4287     case $cpu in
4288         i[345]86|pentium)
4289             cpuflags="-march=$cpu"
4290             disable i686
4291             disable mmx
4292         ;;
4293         # targets that do NOT support nopl and conditional mov (cmov)
4294         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4295             cpuflags="-march=$cpu"
4296             disable i686
4297         ;;
4298         # targets that do support nopl and conditional mov (cmov)
4299         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4300         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4301             cpuflags="-march=$cpu"
4302             enable i686
4303             enable fast_cmov
4304         ;;
4305         # targets that do support conditional mov but on which it's slow
4306         pentium4|pentium4m|prescott|nocona)
4307             cpuflags="-march=$cpu"
4308             enable i686
4309             disable fast_cmov
4310         ;;
4311     esac
4312
4313 fi
4314
4315 if [ "$cpu" != generic ]; then
4316     add_cflags  $cpuflags
4317     add_asflags $cpuflags
4318     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4319 fi
4320
4321 # compiler sanity check
4322 check_exec <<EOF
4323 int main(void){ return 0; }
4324 EOF
4325 if test "$?" != 0; then
4326     echo "$cc is unable to create an executable file."
4327     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4328         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4329         echo "Only do this if you know what cross compiling means."
4330     fi
4331     die "C compiler test failed."
4332 fi
4333
4334 add_cppflags -D_ISOC99_SOURCE
4335 add_cxxflags -D__STDC_CONSTANT_MACROS
4336 check_cflags -std=c99
4337 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4338 #include <stdlib.h>
4339 EOF
4340 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4341 #include <stdlib.h>
4342 EOF
4343
4344 add_host_cppflags -D_ISOC99_SOURCE
4345 check_host_cflags -std=c99
4346 check_host_cflags -Wall
4347 check_host_cflags -O3
4348
4349 check_64bit(){
4350     arch32=$1
4351     arch64=$2
4352     expr=$3
4353     check_code cc "" "int test[2*($expr) - 1]" &&
4354         subarch=$arch64 || subarch=$arch32
4355 }
4356
4357 case "$arch" in
4358     aarch64|alpha|ia64)
4359         spic=$shared
4360     ;;
4361     mips)
4362         check_64bit mips mips64 '_MIPS_SIM > 1'
4363         spic=$shared
4364     ;;
4365     parisc)
4366         check_64bit parisc parisc64 'sizeof(void *) > 4'
4367         spic=$shared
4368     ;;
4369     ppc)
4370         check_64bit ppc ppc64 'sizeof(void *) > 4'
4371         spic=$shared
4372     ;;
4373     s390)
4374         check_64bit s390 s390x 'sizeof(void *) > 4'
4375         spic=$shared
4376     ;;
4377     sparc)
4378         check_64bit sparc sparc64 'sizeof(void *) > 4'
4379         spic=$shared
4380     ;;
4381     x86)
4382         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4383         # Treat x32 as x64 for now. Note it also needs spic=$shared
4384         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4385             subarch=x86_64
4386         if test "$subarch" = "x86_64"; then
4387             spic=$shared
4388         fi
4389     ;;
4390     ppc)
4391         check_cc <<EOF && subarch="ppc64"
4392         int test[(int)sizeof(char*) - 7];
4393 EOF
4394     ;;
4395 esac
4396
4397 enable $subarch
4398 enabled spic && enable_weak pic
4399
4400 # OS specific
4401 case $target_os in
4402     aix)
4403         SHFLAGS=-shared
4404         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4405         enabled shared && add_ldflags -Wl,-brtl
4406         ;;
4407     android)
4408         disable symver
4409         enable section_data_rel_ro
4410         SLIB_INSTALL_NAME='$(SLIBNAME)'
4411         SLIB_INSTALL_LINKS=
4412         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4413         ;;
4414     haiku)
4415         prefix_default="/boot/common"
4416         network_extralibs="-lnetwork"
4417         host_libs=
4418         ;;
4419     sunos)
4420         SHFLAGS='-shared -Wl,-h,$$(@F)'
4421         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4422         network_extralibs="-lsocket -lnsl"
4423         add_cppflags -D__EXTENSIONS__
4424         # When using suncc to build, the Solaris linker will mark
4425         # an executable with each instruction set encountered by
4426         # the Solaris assembler.  As our libraries contain their own
4427         # guards for processor-specific code, instead suppress
4428         # generation of the HWCAPS ELF section on Solaris x86 only.
4429         enabled_all suncc x86 &&
4430             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4431             add_ldflags -Wl,-M,mapfile
4432         nm_default='nm -P -g'
4433         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4434         ;;
4435     netbsd)
4436         disable symver
4437         oss_indev_extralibs="-lossaudio"
4438         oss_outdev_extralibs="-lossaudio"
4439         enabled gcc || check_ldflags -Wl,-zmuldefs
4440         ;;
4441     openbsd|bitrig)
4442         disable symver
4443         SHFLAGS='-shared'
4444         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4445         SLIB_INSTALL_LINKS=
4446         oss_indev_extralibs="-lossaudio"
4447         oss_outdev_extralibs="-lossaudio"
4448         ;;
4449     dragonfly)
4450         disable symver
4451         ;;
4452     freebsd)
4453         ;;
4454     bsd/os)
4455         add_extralibs -lpoll -lgnugetopt
4456         strip="strip -d"
4457         ;;
4458     darwin)
4459         enabled ppc && add_asflags -force_cpusubtype_ALL
4460         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4461         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4462         strip="${strip} -x"
4463         add_ldflags -Wl,-dynamic,-search_paths_first
4464         SLIBSUF=".dylib"
4465         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4466         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4467         objformat="macho"
4468         enabled x86_64 && objformat="macho64"
4469         enabled_any pic shared x86_64 ||
4470             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4471         ;;
4472     msys*)
4473         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4474         ;;
4475     mingw32*|mingw64*)
4476         if test $target_os = "mingw32ce"; then
4477             disable network
4478         else
4479             target_os=mingw32
4480         fi
4481         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4482         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4483         LIBTARGET=i386
4484         if enabled x86_64; then
4485             LIBTARGET="i386:x86-64"
4486         elif enabled arm; then
4487             LIBTARGET=arm-wince
4488         fi
4489         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4490         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4491         shlibdir_default="$bindir_default"
4492         SLIBPREF=""
4493         SLIBSUF=".dll"
4494         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4495         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4496         dlltool="${cross_prefix}dlltool"
4497         if check_cmd lib.exe -list; then
4498             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4499             if enabled x86_64; then
4500                 LIBTARGET=x64
4501             fi
4502         elif check_cmd $dlltool --version; then
4503             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4504         fi
4505         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4506         SLIB_INSTALL_LINKS=
4507         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4508         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4509         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4510         objformat="win32"
4511         ranlib=:
4512         enable dos_paths
4513         check_ldflags -Wl,--nxcompat,--dynamicbase
4514         # Lets work around some stupidity in binutils.
4515         # ld will strip relocations from executables even though we need them
4516         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4517         # however ld then forgets what the entry point should be (oops) so we
4518         # have to manually (re)set it.
4519         if enabled x86_32; then
4520             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4521         elif enabled x86_64; then
4522             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4523             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4524             # Set image base >4GB for extra entropy with HEASLR
4525             add_ldexeflags -Wl,--image-base,0x140000000
4526             append SHFLAGS -Wl,--image-base,0x180000000
4527         fi
4528         ;;
4529     win32|win64)
4530         disable symver
4531         if enabled shared; then
4532             # Link to the import library instead of the normal static library
4533             # for shared libs.
4534             LD_LIB='%.lib'
4535             # Cannot build both shared and static libs with MSVC or icl.
4536             disable static
4537         fi
4538         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4539         shlibdir_default="$bindir_default"
4540         SLIBPREF=""
4541         SLIBSUF=".dll"
4542         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4543         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4544         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4545         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4546         SLIB_INSTALL_LINKS=
4547         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4548         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4549         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4550         objformat="win32"
4551         ranlib=:
4552         enable dos_paths
4553         ;;
4554     cygwin*)
4555         target_os=cygwin
4556         shlibdir_default="$bindir_default"
4557         SLIBPREF="cyg"
4558         SLIBSUF=".dll"
4559         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4560         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4561         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4562         SLIB_INSTALL_LINKS=
4563         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4564         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4565         objformat="win32"
4566         enable dos_paths
4567         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4568         ;;
4569     *-dos|freedos|opendos)
4570         network_extralibs="-lsocket"
4571         objformat="coff"
4572         enable dos_paths
4573         add_cppflags -U__STRICT_ANSI__
4574         ;;
4575     linux)
4576         enable dv1394
4577         enable section_data_rel_ro
4578         ;;
4579     irix*)
4580         target_os=irix
4581         ranlib="echo ignoring ranlib"
4582         ;;
4583     os/2*)
4584         strip="lxlite -CS"
4585         ln_s="cp -f"
4586         objformat="aout"
4587         add_cppflags -D_GNU_SOURCE
4588         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4589         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4590         LIBSUF="_s.a"
4591         SLIBPREF=""
4592         SLIBSUF=".dll"
4593         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4594         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4595         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4596             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4597             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4598             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4599             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4600         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4601             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4602         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4603         enable dos_paths
4604         enable_weak os2threads
4605         ;;
4606     gnu/kfreebsd)
4607         add_cppflags -D_BSD_SOURCE
4608         ;;
4609     gnu)
4610         ;;
4611     qnx)
4612         add_cppflags -D_QNX_SOURCE
4613         network_extralibs="-lsocket"
4614         ;;
4615     symbian)
4616         SLIBSUF=".dll"
4617         enable dos_paths
4618         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4619         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4620         add_ldflags -Wl,--target1-abs,--no-undefined \
4621                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4622                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4623         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4624                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4625                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4626         ;;
4627     osf1)
4628         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4629         ;;
4630     minix)
4631         ;;
4632     plan9)
4633         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4634                      -D_REENTRANT_SOURCE        \
4635                      -D_RESEARCH_SOURCE         \
4636                      -DFD_SETSIZE=96            \
4637                      -DHAVE_SOCK_OPTS
4638         add_compat strtod.o strtod=avpriv_strtod
4639         network_extralibs='-lbsd'
4640         exeobjs=compat/plan9/main.o
4641         disable ffserver
4642         cp_f='cp'
4643         ;;
4644     none)
4645         ;;
4646     *)
4647         die "Unknown OS '$target_os'."
4648         ;;
4649 esac
4650
4651 # determine libc flavour
4652
4653 probe_libc(){
4654     pfx=$1
4655     pfx_no_=${pfx%_}
4656     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4657     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4658         eval ${pfx}libc_type=uclibc
4659         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4660     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4661         eval ${pfx}libc_type=glibc
4662         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4663     # MinGW headers can be installed on Cygwin, so check for newlib first.
4664     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4665         eval ${pfx}libc_type=newlib
4666         add_${pfx}cppflags -U__STRICT_ANSI__
4667     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4668     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4669         eval ${pfx}libc_type=mingw64
4670         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4671             add_compat msvcrt/snprintf.o
4672             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4673         fi
4674         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4675         eval test \$${pfx_no_}cc_type = "gcc" &&
4676             add_${pfx}cppflags -D__printf__=__gnu_printf__
4677     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4678          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4679         eval ${pfx}libc_type=mingw32
4680         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4681             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4682             die "ERROR: MinGW32 runtime version must be >= 3.15."
4683         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4684         eval test \$${pfx_no_}cc_type = "gcc" &&
4685             add_${pfx}cppflags -D__printf__=__gnu_printf__
4686     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4687         eval ${pfx}libc_type=msvcrt
4688         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4689             if [ "$pfx" = host_ ]; then
4690                 add_host_cppflags -Dsnprintf=_snprintf
4691             else
4692                 add_compat strtod.o strtod=avpriv_strtod
4693                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4694                                              _snprintf=avpriv_snprintf  \
4695                                              vsnprintf=avpriv_vsnprintf
4696             fi
4697         fi
4698         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4699         # 0x601 by default unless something else is set by the user.
4700         # This can easily lead to us detecting functions only present
4701         # in such new versions and producing binaries requiring windows 7.0.
4702         # Therefore explicitly set the default to XP unless the user has
4703         # set something else on the command line.
4704         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4705         # family. For these cases, configure is free to use any functions
4706         # found in the SDK headers by default. (Alternatively, we could force
4707         # _WIN32_WINNT to 0x0602 in that case.)
4708         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4709             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4710 #ifdef WINAPI_FAMILY
4711 #include <winapifamily.h>
4712 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4713 #error not desktop
4714 #endif
4715 #endif
4716 EOF
4717     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4718         eval ${pfx}libc_type=klibc
4719     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4720         eval ${pfx}libc_type=bionic
4721     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4722         eval ${pfx}libc_type=solaris
4723         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4724     fi
4725     check_${pfx}cc <<EOF
4726 #include <time.h>
4727 void *v = localtime_r;
4728 EOF
4729 test "$?" != 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
4730 #include <time.h>
4731 void *v = localtime_r;
4732 EOF
4733
4734 }
4735
4736 probe_libc
4737 test -n "$libc_type" && enable libc_$libc_type
4738 probe_libc host_
4739 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4740
4741 case $libc_type in
4742     bionic)
4743         add_compat strtod.o strtod=avpriv_strtod
4744         ;;
4745 esac
4746
4747 # hacks for compiler/libc/os combinations
4748
4749 if enabled_all tms470 libc_glibc; then
4750     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4751     add_cppflags -D__USER_LABEL_PREFIX__=
4752     add_cppflags -D__builtin_memset=memset
4753     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4754     add_cflags   -pds=48    # incompatible redefinition of macro
4755 fi
4756
4757 if enabled_all ccc libc_glibc; then
4758     add_ldflags -Wl,-z,now  # calls to libots crash without this
4759 fi
4760
4761 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4762     add_cppflags '-I\$(SRC_PATH)/compat/float'
4763
4764 esc(){
4765     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4766 }
4767
4768 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4769
4770 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4771
4772 set_default libdir
4773 : ${shlibdir_default:="$libdir"}
4774 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4775
4776 set_default $PATHS_LIST
4777 set_default nm
4778
4779 # we need to build at least one lib type
4780 if ! enabled_any static shared; then
4781     cat <<EOF
4782 At least one library type must be built.
4783 Specify --enable-static to build the static libraries or --enable-shared to
4784 build the shared libraries as well. To only build the shared libraries specify
4785 --disable-static in addition to --enable-shared.
4786 EOF
4787     exit 1;
4788 fi
4789
4790 die_license_disabled() {
4791     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4792 }
4793
4794 die_license_disabled_gpl() {
4795     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4796 }
4797
4798 die_license_disabled gpl frei0r
4799 die_license_disabled gpl libcdio
4800 die_license_disabled gpl librubberband
4801 die_license_disabled gpl libsmbclient
4802 die_license_disabled gpl libutvideo
4803 die_license_disabled gpl libvidstab
4804 die_license_disabled gpl libx264
4805 die_license_disabled gpl libx265
4806 die_license_disabled gpl libxavs
4807 die_license_disabled gpl libxvid
4808 die_license_disabled gpl libzvbi
4809 die_license_disabled gpl x11grab
4810
4811 die_license_disabled nonfree libaacplus
4812 die_license_disabled nonfree libfaac
4813 die_license_disabled nonfree nvenc
4814 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4815 enabled gpl && die_license_disabled_gpl nonfree openssl
4816
4817 die_license_disabled version3 gmp
4818 die_license_disabled version3 libopencore_amrnb
4819 die_license_disabled version3 libopencore_amrwb
4820 die_license_disabled version3 libsmbclient
4821 die_license_disabled version3 libvo_aacenc
4822 die_license_disabled version3 libvo_amrwbenc
4823
4824 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4825
4826 disabled optimizations || check_cflags -fomit-frame-pointer
4827
4828 enable_weak_pic() {
4829     disabled pic && return
4830     enable pic
4831     add_cppflags -DPIC
4832     case "$target_os" in
4833     mingw*|cygwin*)
4834         ;;
4835     *)
4836         add_cflags -fPIC
4837         ;;
4838     esac
4839     add_asflags  -fPIC
4840 }
4841
4842 enabled pic && enable_weak_pic
4843
4844 check_cc <<EOF || die "Symbol mangling check failed."
4845 int ff_extern;
4846 EOF
4847 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4848 extern_prefix=${sym%%ff_extern*}
4849
4850 check_cc <<EOF && enable_weak inline_asm
4851 void foo(void) { __asm__ volatile ("" ::); }
4852 EOF
4853
4854 _restrict=
4855 for restrict_keyword in restrict __restrict__ __restrict; do
4856     check_cc <<EOF && _restrict=$restrict_keyword && break
4857 void foo(char * $restrict_keyword p);
4858 EOF
4859 done
4860
4861 check_cc <<EOF && enable pragma_deprecated
4862 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4863 EOF
4864
4865 check_cc <<EOF && enable attribute_packed
4866 struct { int x; } __attribute__((packed)) x;
4867 EOF
4868
4869 check_cc <<EOF && enable attribute_may_alias
4870 union { int x; } __attribute__((may_alias)) x;
4871 EOF
4872
4873 check_cc <<EOF || die "endian test failed"
4874 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4875 EOF
4876 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4877
4878 if ! enabled ppc64 || enabled bigendian; then
4879     disable vsx
4880 fi
4881
4882 check_gas() {
4883     log "check_gas using '$as' as AS"
4884     # :vararg is used on&