lavu: add ff_parity()
[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-libtesseract    enable Tesseract, needed for ocr filter [no]
254   --enable-libtheora       enable Theora encoding via libtheora [no]
255   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
256   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
257   --enable-libv4l2         enable libv4l2/v4l-utils [no]
258   --enable-libvidstab      enable video stabilization using vid.stab [no]
259   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
260   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
261   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
262                            native implementation exists [no]
263   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
264   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
265   --enable-libwebp         enable WebP encoding via libwebp [no]
266   --enable-libx264         enable H.264 encoding via x264 [no]
267   --enable-libx265         enable HEVC encoding via x265 [no]
268   --enable-libxavs         enable AVS encoding via xavs [no]
269   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
270   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
271   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
272   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
273   --enable-libxvid         enable Xvid encoding via xvidcore,
274                            native MPEG-4/Xvid encoder exists [no]
275   --enable-libzimg         enable z.lib, needed for zscale filter [no]
276   --enable-libzmq          enable message passing via libzmq [no]
277   --enable-libzvbi         enable teletext support via libzvbi [no]
278   --disable-lzma           disable lzma [autodetect]
279   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
280   --enable-mmal            enable decoding via MMAL [no]
281   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
282   --enable-nvenc           enable NVIDIA NVENC support [no]
283   --enable-openal          enable OpenAL 1.1 capture support [no]
284   --enable-opencl          enable OpenCL code
285   --enable-opengl          enable OpenGL rendering [no]
286   --enable-openssl         enable openssl, needed for https support
287                            if gnutls is not used [no]
288   --disable-schannel       disable SChannel SSP, needed for TLS support on
289                            Windows if openssl and gnutls are not used [autodetect]
290   --disable-sdl            disable sdl [autodetect]
291   --disable-securetransport disable Secure Transport, needed for TLS support
292                            on OSX if openssl and gnutls are not used [autodetect]
293   --enable-x11grab         enable X11 grabbing (legacy) [no]
294   --disable-xlib           disable xlib [autodetect]
295   --disable-zlib           disable zlib [autodetect]
296
297 Toolchain options:
298   --arch=ARCH              select architecture [$arch]
299   --cpu=CPU                select the minimum required CPU (affects
300                            instruction selection, may crash on older CPUs)
301   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
302   --progs-suffix=SUFFIX    program name suffix []
303   --enable-cross-compile   assume a cross-compiler is used
304   --sysroot=PATH           root of cross-build tree
305   --sysinclude=PATH        location of cross-build system headers
306   --target-os=OS           compiler targets OS [$target_os]
307   --target-exec=CMD        command to run executables on target
308   --target-path=DIR        path to view of build directory on target
309   --target-samples=DIR     path to samples directory on target
310   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
311   --toolchain=NAME         set tool defaults according to NAME
312   --nm=NM                  use nm tool NM [$nm_default]
313   --ar=AR                  use archive tool AR [$ar_default]
314   --as=AS                  use assembler AS [$as_default]
315   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
316   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
317   --cc=CC                  use C compiler CC [$cc_default]
318   --cxx=CXX                use C compiler CXX [$cxx_default]
319   --objcc=OCC              use ObjC compiler OCC [$cc_default]
320   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
321   --ld=LD                  use linker LD [$ld_default]
322   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
323   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
324   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
325   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
326   --host-cc=HOSTCC         use host C compiler HOSTCC
327   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
328   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
329   --host-ld=HOSTLD         use host linker HOSTLD
330   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
331   --host-libs=HLIBS        use libs HLIBS when linking for host
332   --host-os=OS             compiler host OS [$target_os]
333   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
334   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
335   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
336   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
337   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
338   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
339   --extra-libs=ELIBS       add ELIBS [$ELIBS]
340   --extra-version=STRING   version string suffix []
341   --optflags=OPTFLAGS      override optimization-related compiler flags
342   --build-suffix=SUFFIX    library name suffix []
343   --enable-pic             build position-independent code
344   --enable-thumb           compile for Thumb instruction set
345   --enable-lto             use link-time optimization
346   --env="ENV=override"     override the environment variables
347
348 Advanced options (experts only):
349   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
350   --custom-allocator=NAME  use a supported custom allocator
351   --disable-symver         disable symbol versioning
352   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
353   --disable-safe-bitstream-reader
354                            disable buffer boundary checking in bitreaders
355                            (faster, but may crash)
356   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
357   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
358
359 Optimization options (experts only):
360   --disable-asm            disable all assembly optimizations
361   --disable-altivec        disable AltiVec optimizations
362   --disable-vsx            disable VSX optimizations
363   --disable-power8         disable POWER8 optimizations
364   --disable-amd3dnow       disable 3DNow! optimizations
365   --disable-amd3dnowext    disable 3DNow! extended optimizations
366   --disable-mmx            disable MMX optimizations
367   --disable-mmxext         disable MMXEXT optimizations
368   --disable-sse            disable SSE optimizations
369   --disable-sse2           disable SSE2 optimizations
370   --disable-sse3           disable SSE3 optimizations
371   --disable-ssse3          disable SSSE3 optimizations
372   --disable-sse4           disable SSE4 optimizations
373   --disable-sse42          disable SSE4.2 optimizations
374   --disable-avx            disable AVX optimizations
375   --disable-xop            disable XOP optimizations
376   --disable-fma3           disable FMA3 optimizations
377   --disable-fma4           disable FMA4 optimizations
378   --disable-avx2           disable AVX2 optimizations
379   --disable-aesni          disable AESNI optimizations
380   --disable-armv5te        disable armv5te optimizations
381   --disable-armv6          disable armv6 optimizations
382   --disable-armv6t2        disable armv6t2 optimizations
383   --disable-vfp            disable VFP optimizations
384   --disable-neon           disable NEON optimizations
385   --disable-inline-asm     disable use of inline assembly
386   --disable-yasm           disable use of nasm/yasm assembly
387   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
388   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
389   --disable-msa            disable MSA optimizations
390   --disable-mipsfpu        disable floating point MIPS optimizations
391   --disable-mmi            disable Loongson SIMD optimizations
392   --disable-fast-unaligned consider unaligned accesses slow
393
394 Developer options (useful when working on FFmpeg itself):
395   --disable-debug          disable debugging symbols
396   --enable-debug=LEVEL     set the debug level [$debuglevel]
397   --disable-optimizations  disable compiler optimizations
398   --enable-extra-warnings  enable more compiler warnings
399   --disable-stripping      disable stripping of executables and shared libraries
400   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
401                            2 causes a slowdown at runtime.
402   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
403   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
404                            leaks and errors, using the specified valgrind binary.
405                            Cannot be combined with --target-exec
406   --enable-ftrapv          Trap arithmetic overflows
407   --samples=PATH           location of test samples for FATE, if not set use
408                            \$FATE_SAMPLES at make invocation time.
409   --enable-neon-clobber-test check NEON registers for clobbering (should be
410                            used only for debugging purposes)
411   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
412                            should be used only for debugging purposes)
413   --enable-random          randomly enable/disable components
414   --disable-random
415   --enable-random=LIST     randomly enable/disable specific components or
416   --disable-random=LIST    component groups. LIST is a comma-separated list
417                            of NAME[:PROB] entries where NAME is a component
418                            (group) and PROB the probability associated with
419                            NAME (default 0.5).
420   --random-seed=VALUE      seed value for --enable/disable-random
421   --disable-valgrind-backtrace do not print a backtrace under Valgrind
422                            (only applies to --disable-optimizations builds)
423
424 NOTE: Object files are built at the place where configure is launched.
425 EOF
426   exit 0
427 }
428
429 quotes='""'
430 if test -t 1 && which tput >/dev/null 2>&1; then
431     ncolors=$(tput colors)
432     if test -n "$ncolors" && test $ncolors -ge 8; then
433         bold_color=$(tput bold)
434         warn_color=$(tput setaf 3)
435         error_color=$(tput setaf 1)
436         reset_color=$(tput sgr0)
437     fi
438     # 72 used instead of 80 since that's the default of pr
439     ncols=$(tput cols)
440 fi
441 : ${ncols:=72}
442
443 log(){
444     echo "$@" >> $logfile
445 }
446
447 log_file(){
448     log BEGIN $1
449     pr -n -t $1 >> $logfile
450     log END $1
451 }
452
453 warn(){
454     log "WARNING: $*"
455     WARNINGS="${WARNINGS}WARNING: $*\n"
456 }
457
458 die(){
459     log "$@"
460     echo "$error_color$bold_color$@$reset_color"
461     cat <<EOF
462
463 If you think configure made a mistake, make sure you are using the latest
464 version from Git.  If the latest version fails, report the problem to the
465 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
466 EOF
467     if disabled logging; then
468         cat <<EOF
469 Rerun configure with logging enabled (do not use --disable-logging), and
470 include the log this produces with your report.
471 EOF
472     else
473         cat <<EOF
474 Include the log file "$logfile" produced by configure as this will help
475 solve the problem.
476 EOF
477     fi
478     exit 1
479 }
480
481 # Avoid locale weirdness, besides we really just want to translate ASCII.
482 toupper(){
483     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
484 }
485
486 tolower(){
487     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
488 }
489
490 c_escape(){
491     echo "$*" | sed 's/["\\]/\\\0/g'
492 }
493
494 sh_quote(){
495     v=$(echo "$1" | sed "s/'/'\\\\''/g")
496     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
497     echo "$v"
498 }
499
500 cleanws(){
501     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
502 }
503
504 filter(){
505     pat=$1
506     shift
507     for v; do
508         eval "case $v in $pat) echo $v ;; esac"
509     done
510 }
511
512 filter_out(){
513     pat=$1
514     shift
515     for v; do
516         eval "case $v in $pat) ;; *) echo $v ;; esac"
517     done
518 }
519
520 map(){
521     m=$1
522     shift
523     for v; do eval $m; done
524 }
525
526 add_suffix(){
527     suffix=$1
528     shift
529     for v; do echo ${v}${suffix}; done
530 }
531
532 set_all(){
533     value=$1
534     shift
535     for var in $*; do
536         eval $var=$value
537     done
538 }
539
540 set_weak(){
541     value=$1
542     shift
543     for var; do
544         eval : \${$var:=$value}
545     done
546 }
547
548 sanitize_var_name(){
549     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
550 }
551
552 set_safe(){
553     var=$1
554     shift
555     eval $(sanitize_var_name "$var")='$*'
556 }
557
558 get_safe(){
559     eval echo \$$(sanitize_var_name "$1")
560 }
561
562 pushvar(){
563     for pvar in $*; do
564         eval level=\${${pvar}_level:=0}
565         eval ${pvar}_${level}="\$$pvar"
566         eval ${pvar}_level=$(($level+1))
567     done
568 }
569
570 popvar(){
571     for pvar in $*; do
572         eval level=\${${pvar}_level:-0}
573         test $level = 0 && continue
574         eval level=$(($level-1))
575         eval $pvar="\${${pvar}_${level}}"
576         eval ${pvar}_level=$level
577         eval unset ${pvar}_${level}
578     done
579 }
580
581 enable(){
582     set_all yes $*
583 }
584
585 disable(){
586     set_all no $*
587 }
588
589 enable_weak(){
590     set_weak yes $*
591 }
592
593 disable_weak(){
594     set_weak no $*
595 }
596
597 enable_safe(){
598     for var; do
599         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
600     done
601 }
602
603 disable_safe(){
604     for var; do
605         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
606     done
607 }
608
609 do_enable_deep(){
610     for var; do
611         enabled $var && continue
612         eval sel="\$${var}_select"
613         eval sgs="\$${var}_suggest"
614         pushvar var sgs
615         enable_deep $sel
616         popvar sgs
617         enable_deep_weak $sgs
618         popvar var
619     done
620 }
621
622 enable_deep(){
623     do_enable_deep $*
624     enable $*
625 }
626
627 enable_deep_weak(){
628     for var; do
629         disabled $var && continue
630         pushvar var
631         do_enable_deep $var
632         popvar var
633         enable_weak $var
634     done
635 }
636
637 enabled(){
638     test "${1#!}" = "$1" && op='=' || op=!=
639     eval test "x\$${1#!}" $op "xyes"
640 }
641
642 disabled(){
643     test "${1#!}" = "$1" && op='=' || op=!=
644     eval test "x\$${1#!}" $op "xno"
645 }
646
647 enabled_all(){
648     for opt; do
649         enabled $opt || return 1
650     done
651 }
652
653 disabled_all(){
654     for opt; do
655         disabled $opt || return 1
656     done
657 }
658
659 enabled_any(){
660     for opt; do
661         enabled $opt && return 0
662     done
663 }
664
665 disabled_any(){
666     for opt; do
667         disabled $opt && return 0
668     done
669     return 1
670 }
671
672 set_default(){
673     for opt; do
674         eval : \${$opt:=\$${opt}_default}
675     done
676 }
677
678 is_in(){
679     value=$1
680     shift
681     for var in $*; do
682         [ $var = $value ] && return 0
683     done
684     return 1
685 }
686
687 do_check_deps(){
688     for cfg; do
689         cfg="${cfg#!}"
690         enabled ${cfg}_checking && die "Circular dependency for $cfg."
691         disabled ${cfg}_checking && continue
692         enable ${cfg}_checking
693         append allopts $cfg
694
695         eval dep_all="\$${cfg}_deps"
696         eval dep_any="\$${cfg}_deps_any"
697         eval dep_sel="\$${cfg}_select"
698         eval dep_sgs="\$${cfg}_suggest"
699         eval dep_ifa="\$${cfg}_if"
700         eval dep_ifn="\$${cfg}_if_any"
701
702         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
703         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
704         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
705
706         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
707         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
708         enabled_all  $dep_all || disable $cfg
709         enabled_any  $dep_any || disable $cfg
710         disabled_any $dep_sel && disable $cfg
711
712         if enabled $cfg; then
713             enable_deep $dep_sel
714             enable_deep_weak $dep_sgs
715         fi
716
717         disable ${cfg}_checking
718     done
719 }
720
721 check_deps(){
722     unset allopts
723
724     do_check_deps "$@"
725
726     for cfg in $allopts; do
727         enabled $cfg || continue
728         eval dep_extralibs="\$${cfg}_extralibs"
729         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
730     done
731 }
732
733 print_config(){
734     pfx=$1
735     files=$2
736     shift 2
737     map 'eval echo "$v \${$v:-no}"' "$@" |
738     awk "BEGIN { split(\"$files\", files) }
739         {
740             c = \"$pfx\" toupper(\$1);
741             v = \$2;
742             sub(/yes/, 1, v);
743             sub(/no/,  0, v);
744             for (f in files) {
745                 file = files[f];
746                 if (file ~ /\\.h\$/) {
747                     printf(\"#define %s %d\\n\", c, v) >>file;
748                 } else if (file ~ /\\.asm\$/) {
749                     printf(\"%%define %s %d\\n\", c, v) >>file;
750                 } else if (file ~ /\\.mak\$/) {
751                     n = -v ? \"\" : \"!\";
752                     printf(\"%s%s=yes\\n\", n, c) >>file;
753                 } else if (file ~ /\\.texi\$/) {
754                     pre = -v ? \"\" : \"@c \";
755                     yesno = \$2;
756                     c2 = tolower(c);
757                     gsub(/_/, \"-\", c2);
758                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
759                 }
760             }
761         }"
762 }
763
764 print_enabled(){
765     suf=$1
766     shift
767     for v; do
768         enabled $v && printf "%s\n" ${v%$suf};
769     done
770 }
771
772 append(){
773     var=$1
774     shift
775     eval "$var=\"\$$var $*\""
776 }
777
778 prepend(){
779     var=$1
780     shift
781     eval "$var=\"$* \$$var\""
782 }
783
784 unique(){
785     var=$1
786     uniq_list=""
787     for tok in $(eval echo \$$var); do
788         uniq_list="$(filter_out $tok $uniq_list) $tok"
789     done
790     eval "$var=\"${uniq_list}\""
791 }
792
793 add_cppflags(){
794     append CPPFLAGS "$@"
795 }
796
797 add_cflags(){
798     append CFLAGS $($cflags_filter "$@")
799 }
800
801 add_cxxflags(){
802     append CXXFLAGS $($cflags_filter "$@")
803 }
804
805 add_asflags(){
806     append ASFLAGS $($asflags_filter "$@")
807 }
808
809 add_objcflags(){
810     append OBJCFLAGS $($objcflags_filter "$@")
811 }
812
813 add_ldflags(){
814     append LDFLAGS $($ldflags_filter "$@")
815 }
816
817 add_ldexeflags(){
818     append LDEXEFLAGS $($ldflags_filter "$@")
819 }
820
821 add_ldlibflags(){
822     append LDLIBFLAGS $($ldflags_filter "$@")
823 }
824
825 add_stripflags(){
826     append ASMSTRIPFLAGS "$@"
827 }
828
829 add_extralibs(){
830     prepend extralibs $($ldflags_filter "$@")
831 }
832
833 add_host_cppflags(){
834     append host_cppflags "$@"
835 }
836
837 add_host_cflags(){
838     append host_cflags $($host_cflags_filter "$@")
839 }
840
841 add_host_ldflags(){
842     append host_ldflags $($host_ldflags_filter "$@")
843 }
844
845 add_compat(){
846     append compat_objs $1
847     shift
848     map 'add_cppflags -D$v' "$@"
849 }
850
851 check_cmd(){
852     log "$@"
853     "$@" >> $logfile 2>&1
854 }
855
856 check_stat(){
857     log check_stat "$@"
858     stat "$1" >> $logfile 2>&1
859 }
860
861 cc_o(){
862     eval printf '%s\\n' $CC_O
863 }
864
865 cc_e(){
866     eval printf '%s\\n' $CC_E
867 }
868
869 check_cc(){
870     log check_cc "$@"
871     cat > $TMPC
872     log_file $TMPC
873     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
874 }
875
876 check_cxx(){
877     log check_cxx "$@"
878     cat > $TMPCPP
879     log_file $TMPCPP
880     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
881 }
882
883 check_objcc(){
884     log check_objcc "$@"
885     cat > $TMPM
886     log_file $TMPM
887     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
888 }
889
890 check_cpp(){
891     log check_cpp "$@"
892     cat > $TMPC
893     log_file $TMPC
894     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
895 }
896
897 as_o(){
898     eval printf '%s\\n' $AS_O
899 }
900
901 check_as(){
902     log check_as "$@"
903     cat > $TMPS
904     log_file $TMPS
905     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
906 }
907
908 check_inline_asm(){
909     log check_inline_asm "$@"
910     name="$1"
911     code="$2"
912     shift 2
913     disable $name
914     check_cc "$@" <<EOF && enable $name
915 void foo(void){ __asm__ volatile($code); }
916 EOF
917 }
918
919 check_insn(){
920     log check_insn "$@"
921     check_inline_asm ${1}_inline "\"$2\""
922     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
923 }
924
925 check_yasm(){
926     log check_yasm "$@"
927     echo "$1" > $TMPS
928     log_file $TMPS
929     shift 1
930     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
931 }
932
933 ld_o(){
934     eval printf '%s\\n' $LD_O
935 }
936
937 check_ld(){
938     log check_ld "$@"
939     type=$1
940     shift 1
941     flags=$(filter_out '-l*|*.so' $@)
942     libs=$(filter '-l*|*.so' $@)
943     check_$type $($cflags_filter $flags) || return
944     flags=$($ldflags_filter $flags)
945     libs=$($ldflags_filter $libs)
946     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
947 }
948
949 print_include(){
950     hdr=$1
951     test "${hdr%.h}" = "${hdr}" &&
952         echo "#include $hdr"    ||
953         echo "#include <$hdr>"
954 }
955
956 check_code(){
957     log check_code "$@"
958     check=$1
959     headers=$2
960     code=$3
961     shift 3
962     {
963         for hdr in $headers; do
964             print_include $hdr
965         done
966         echo "int main(void) { $code; return 0; }"
967     } | check_$check "$@"
968 }
969
970 check_cppflags(){
971     log check_cppflags "$@"
972     check_cc "$@" <<EOF && append CPPFLAGS "$@"
973 int x;
974 EOF
975 }
976
977 test_cflags(){
978     log test_cflags "$@"
979     set -- $($cflags_filter "$@")
980     check_cc "$@" <<EOF
981 int x;
982 EOF
983 }
984
985 check_cflags(){
986     log check_cflags "$@"
987     test_cflags "$@" && add_cflags "$@"
988 }
989
990 check_cxxflags(){
991     log check_cxxflags "$@"
992     set -- $($cflags_filter "$@")
993     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
994 int x;
995 EOF
996 }
997
998 test_objcflags(){
999     log test_cflags "$@"
1000     set -- $($cflags_filter "$@")
1001     check_objcc "$@" <<EOF
1002 int x;
1003 EOF
1004 }
1005
1006 check_objcflags(){
1007     log check_cflags "$@"
1008     test_objcflags "$@" && add_objcflags "$@"
1009 }
1010
1011 test_ldflags(){
1012     log test_ldflags "$@"
1013     check_ld "cc" "$@" <<EOF
1014 int main(void){ return 0; }
1015 EOF
1016 }
1017
1018 check_ldflags(){
1019     log check_ldflags "$@"
1020     test_ldflags "$@" && add_ldflags "$@"
1021 }
1022
1023 test_stripflags(){
1024     log test_stripflags "$@"
1025     # call check_cc to get a fresh TMPO
1026     check_cc <<EOF
1027 int main(void) { return 0; }
1028 EOF
1029     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1030 }
1031
1032 check_stripflags(){
1033     log check_stripflags "$@"
1034     test_stripflags "$@" && add_stripflags "$@"
1035 }
1036
1037 check_header(){
1038     log check_header "$@"
1039     header=$1
1040     shift
1041     disable_safe $header
1042     check_cpp "$@" <<EOF && enable_safe $header
1043 #include <$header>
1044 int x;
1045 EOF
1046 }
1047
1048 check_header_objcc(){
1049     log check_header_objcc "$@"
1050     rm -f -- "$TMPO"
1051     header=$1
1052     shift
1053     disable_safe $header
1054     {
1055        echo "#include <$header>"
1056        echo "int main(void) { return 0; }"
1057     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1058 }
1059
1060 check_func(){
1061     log check_func "$@"
1062     func=$1
1063     shift
1064     disable $func
1065     check_ld "cc" "$@" <<EOF && enable $func
1066 extern int $func();
1067 int main(void){ $func(); }
1068 EOF
1069 }
1070
1071 check_complexfunc(){
1072     log check_complexfunc "$@"
1073     func=$1
1074     narg=$2
1075     shift 2
1076     test $narg = 2 && args="f, g" || args="f * I"
1077     disable $func
1078     check_ld "cc" "$@" <<EOF && enable $func
1079 #include <complex.h>
1080 #include <math.h>
1081 float foo(complex float f, complex float g) { return $func($args); }
1082 int main(void){ return (int) foo; }
1083 EOF
1084 }
1085
1086 check_mathfunc(){
1087     log check_mathfunc "$@"
1088     func=$1
1089     narg=$2
1090     shift 2
1091     test $narg = 2 && args="f, g" || args="f"
1092     disable $func
1093     check_ld "cc" "$@" <<EOF && enable $func
1094 #include <math.h>
1095 float foo(float f, float g) { return $func($args); }
1096 int main(void){ return (int) foo; }
1097 EOF
1098 }
1099
1100 check_func_headers(){
1101     log check_func_headers "$@"
1102     headers=$1
1103     funcs=$2
1104     shift 2
1105     {
1106         for hdr in $headers; do
1107             print_include $hdr
1108         done
1109         for func in $funcs; do
1110             echo "long check_$func(void) { return (long) $func; }"
1111         done
1112         echo "int main(void) { return 0; }"
1113     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1114 }
1115
1116 check_class_headers_cpp(){
1117     log check_class_headers_cpp "$@"
1118     headers=$1
1119     classes=$2
1120     shift 2
1121     {
1122         for hdr in $headers; do
1123             echo "#include <$hdr>"
1124         done
1125         echo "int main(void) { "
1126         i=1
1127         for class in $classes; do
1128             echo "$class obj$i;"
1129             i=$(expr $i + 1)
1130         done
1131         echo "return 0; }"
1132     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1133 }
1134
1135 check_cpp_condition(){
1136     log check_cpp_condition "$@"
1137     header=$1
1138     condition=$2
1139     shift 2
1140     check_cpp "$@" <<EOF
1141 #include <$header>
1142 #if !($condition)
1143 #error "unsatisfied condition: $condition"
1144 #endif
1145 EOF
1146 }
1147
1148 check_lib(){
1149     log check_lib "$@"
1150     header="$1"
1151     func="$2"
1152     shift 2
1153     check_header $header && check_func $func "$@" && add_extralibs "$@"
1154 }
1155
1156 check_lib2(){
1157     log check_lib2 "$@"
1158     headers="$1"
1159     funcs="$2"
1160     shift 2
1161     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1162 }
1163
1164 check_lib_cpp(){
1165     log check_lib_cpp "$@"
1166     headers="$1"
1167     classes="$2"
1168     shift 2
1169     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1170 }
1171
1172 check_pkg_config(){
1173     log check_pkg_config "$@"
1174     pkgandversion="$1"
1175     pkg="${1%% *}"
1176     headers="$2"
1177     funcs="$3"
1178     shift 3
1179     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1180     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1181     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1182     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1183         set_safe "${pkg}_cflags" $pkg_cflags   &&
1184         set_safe "${pkg}_libs"   $pkg_libs
1185 }
1186
1187 check_exec(){
1188     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1189 }
1190
1191 check_exec_crash(){
1192     code=$(cat)
1193
1194     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1195     # are safe but may not be available everywhere.  Thus we use
1196     # raise(SIGTERM) instead.  The check is run in a subshell so we
1197     # can redirect the "Terminated" message from the shell.  SIGBUS
1198     # is not defined by standard C so it is used conditionally.
1199
1200     (check_exec "$@") >> $logfile 2>&1 <<EOF
1201 #include <signal.h>
1202 static void sighandler(int sig){
1203     raise(SIGTERM);
1204 }
1205 int foo(void){
1206     $code
1207 }
1208 int (*func_ptr)(void) = foo;
1209 int main(void){
1210     signal(SIGILL, sighandler);
1211     signal(SIGFPE, sighandler);
1212     signal(SIGSEGV, sighandler);
1213 #ifdef SIGBUS
1214     signal(SIGBUS, sighandler);
1215 #endif
1216     return func_ptr();
1217 }
1218 EOF
1219 }
1220
1221 check_type(){
1222     log check_type "$@"
1223     headers=$1
1224     type=$2
1225     shift 2
1226     disable_safe "$type"
1227     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1228 }
1229
1230 check_struct(){
1231     log check_struct "$@"
1232     headers=$1
1233     struct=$2
1234     member=$3
1235     shift 3
1236     disable_safe "${struct}_${member}"
1237     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1238         enable_safe "${struct}_${member}"
1239 }
1240
1241 check_builtin(){
1242     log check_builtin "$@"
1243     name=$1
1244     headers=$2
1245     builtin=$3
1246     shift 3
1247     disable "$name"
1248     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1249 }
1250
1251 check_compile_assert(){
1252     log check_compile_assert "$@"
1253     name=$1
1254     headers=$2
1255     condition=$3
1256     shift 3
1257     disable "$name"
1258     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1259 }
1260
1261 require(){
1262     name="$1"
1263     header="$2"
1264     func="$3"
1265     shift 3
1266     check_lib $header $func "$@" || die "ERROR: $name not found"
1267 }
1268
1269 require2(){
1270     name="$1"
1271     headers="$2"
1272     func="$3"
1273     shift 3
1274     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1275 }
1276
1277 require_cpp(){
1278     name="$1"
1279     headers="$2"
1280     classes="$3"
1281     shift 3
1282     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1283 }
1284
1285 use_pkg_config(){
1286     pkg="$1"
1287     check_pkg_config "$@" || return 1
1288     add_cflags    $(get_safe "${pkg}_cflags")
1289     add_extralibs $(get_safe "${pkg}_libs")
1290 }
1291
1292 require_pkg_config(){
1293     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1294 }
1295
1296 require_libfreetype(){
1297     log require_libfreetype "$@"
1298     pkg="freetype2"
1299     check_cmd $pkg_config --exists --print-errors $pkg \
1300       || die "ERROR: $pkg not found"
1301     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1302     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1303     {
1304         echo "#include <ft2build.h>"
1305         echo "#include FT_FREETYPE_H"
1306         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1307         echo "int main(void) { return 0; }"
1308     } | check_ld "cc" $pkg_cflags $pkg_libs \
1309       && set_safe "${pkg}_cflags" $pkg_cflags \
1310       && set_safe "${pkg}_libs"   $pkg_libs \
1311       || die "ERROR: $pkg not found"
1312     add_cflags    $(get_safe "${pkg}_cflags")
1313     add_extralibs $(get_safe "${pkg}_libs")
1314 }
1315
1316 hostcc_e(){
1317     eval printf '%s\\n' $HOSTCC_E
1318 }
1319
1320 hostcc_o(){
1321     eval printf '%s\\n' $HOSTCC_O
1322 }
1323
1324 check_host_cc(){
1325     log check_host_cc "$@"
1326     cat > $TMPC
1327     log_file $TMPC
1328     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1329 }
1330
1331 check_host_cpp(){
1332     log check_host_cpp "$@"
1333     cat > $TMPC
1334     log_file $TMPC
1335     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1336 }
1337
1338 check_host_cppflags(){
1339     log check_host_cppflags "$@"
1340     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1341 int x;
1342 EOF
1343 }
1344
1345 check_host_cflags(){
1346     log check_host_cflags "$@"
1347     set -- $($host_cflags_filter "$@")
1348     check_host_cc "$@" <<EOF && append host_cflags "$@"
1349 int x;
1350 EOF
1351 }
1352
1353 check_host_cpp_condition(){
1354     log check_host_cpp_condition "$@"
1355     header=$1
1356     condition=$2
1357     shift 2
1358     check_host_cpp "$@" <<EOF
1359 #include <$header>
1360 #if !($condition)
1361 #error "unsatisfied condition: $condition"
1362 #endif
1363 EOF
1364 }
1365
1366 cp_if_changed(){
1367     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1368     mkdir -p "$(dirname $2)"
1369     $cp_f "$1" "$2"
1370 }
1371
1372 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1373 # system-dependent things.
1374
1375 AVCODEC_COMPONENTS="
1376     bsfs
1377     decoders
1378     encoders
1379     hwaccels
1380     parsers
1381 "
1382
1383 AVDEVICE_COMPONENTS="
1384     indevs
1385     outdevs
1386 "
1387 AVFILTER_COMPONENTS="
1388     filters
1389 "
1390 AVFORMAT_COMPONENTS="
1391     demuxers
1392     muxers
1393     protocols
1394 "
1395
1396 AVRESAMPLE_COMPONENTS=""
1397 AVUTIL_COMPONENTS=""
1398
1399 COMPONENT_LIST="
1400     $AVCODEC_COMPONENTS
1401     $AVDEVICE_COMPONENTS
1402     $AVFILTER_COMPONENTS
1403     $AVFORMAT_COMPONENTS
1404     $AVRESAMPLE_COMPONENTS
1405     $AVUTIL_COMPONENTS
1406 "
1407
1408 EXAMPLE_LIST="
1409     avio_reading_example
1410     avio_dir_cmd_example
1411     decoding_encoding_example
1412     demuxing_decoding_example
1413     extract_mvs_example
1414     filter_audio_example
1415     filtering_audio_example
1416     filtering_video_example
1417     metadata_example
1418     muxing_example
1419     qsvdec_example
1420     remuxing_example
1421     resampling_audio_example
1422     scaling_video_example
1423     transcode_aac_example
1424     transcoding_example
1425 "
1426
1427 EXTERNAL_LIBRARY_LIST="
1428     avisynth
1429     bzlib
1430     chromaprint
1431     crystalhd
1432     decklink
1433     frei0r
1434     gcrypt
1435     gmp
1436     gnutls
1437     iconv
1438     ladspa
1439     libaacplus
1440     libass
1441     libbluray
1442     libbs2b
1443     libcaca
1444     libcdio
1445     libcelt
1446     libdc1394
1447     libdcadec
1448     libfaac
1449     libfdk_aac
1450     libflite
1451     libfontconfig
1452     libfreetype
1453     libfribidi
1454     libgme
1455     libgsm
1456     libiec61883
1457     libilbc
1458     libkvazaar
1459     libmfx
1460     libmodplug
1461     libmp3lame
1462     libnut
1463     libopencore_amrnb
1464     libopencore_amrwb
1465     libopencv
1466     libopenh264
1467     libopenjpeg
1468     libopus
1469     libpulse
1470     libquvi
1471     librtmp
1472     librubberband
1473     libschroedinger
1474     libshine
1475     libsmbclient
1476     libsnappy
1477     libsoxr
1478     libspeex
1479     libssh
1480     libtesseract
1481     libtheora
1482     libtwolame
1483     libutvideo
1484     libv4l2
1485     libvidstab
1486     libvo_aacenc
1487     libvo_amrwbenc
1488     libvorbis
1489     libvpx
1490     libwavpack
1491     libwebp
1492     libx264
1493     libx265
1494     libxavs
1495     libxcb
1496     libxcb_shm
1497     libxcb_shape
1498     libxcb_xfixes
1499     libxvid
1500     libzimg
1501     libzmq
1502     libzvbi
1503     lzma
1504     mmal
1505     netcdf
1506     nvenc
1507     openal
1508     opencl
1509     opengl
1510     openssl
1511     schannel
1512     sdl
1513     securetransport
1514     x11grab
1515     xlib
1516     zlib
1517 "
1518
1519 DOCUMENT_LIST="
1520     doc
1521     htmlpages
1522     manpages
1523     podpages
1524     txtpages
1525 "
1526
1527 FEATURE_LIST="
1528     ftrapv
1529     gray
1530     hardcoded_tables
1531     runtime_cpudetect
1532     safe_bitstream_reader
1533     shared
1534     small
1535     static
1536     swscale_alpha
1537 "
1538
1539 HWACCEL_LIST="
1540     d3d11va
1541     dxva2
1542     vaapi
1543     vda
1544     vdpau
1545     videotoolbox
1546     xvmc
1547 "
1548
1549 LIBRARY_LIST="
1550     avcodec
1551     avdevice
1552     avfilter
1553     avformat
1554     avresample
1555     avutil
1556     postproc
1557     swresample
1558     swscale
1559 "
1560
1561 LICENSE_LIST="
1562     gpl
1563     nonfree
1564     version3
1565 "
1566
1567 PROGRAM_LIST="
1568     ffplay
1569     ffprobe
1570     ffserver
1571     ffmpeg
1572 "
1573
1574 SUBSYSTEM_LIST="
1575     dct
1576     dwt
1577     error_resilience
1578     faan
1579     fast_unaligned
1580     fft
1581     lsp
1582     lzo
1583     mdct
1584     pixelutils
1585     network
1586     rdft
1587 "
1588
1589 CONFIG_LIST="
1590     $COMPONENT_LIST
1591     $DOCUMENT_LIST
1592     $EXAMPLE_LIST
1593     $EXTERNAL_LIBRARY_LIST
1594     $FEATURE_LIST
1595     $HWACCEL_LIST
1596     $LICENSE_LIST
1597     $LIBRARY_LIST
1598     $PROGRAM_LIST
1599     $SUBSYSTEM_LIST
1600     fontconfig
1601     incompatible_libav_abi
1602     memalign_hack
1603     memory_poisoning
1604     neon_clobber_test
1605     pic
1606     pod2man
1607     raise_major
1608     thumb
1609     valgrind_backtrace
1610     xmm_clobber_test
1611 "
1612
1613 THREADS_LIST="
1614     pthreads
1615     os2threads
1616     w32threads
1617 "
1618
1619 ATOMICS_LIST="
1620     atomics_gcc
1621     atomics_suncc
1622     atomics_win32
1623 "
1624
1625 ARCH_LIST="
1626     aarch64
1627     alpha
1628     arm
1629     avr32
1630     avr32_ap
1631     avr32_uc
1632     bfin
1633     ia64
1634     m68k
1635     mips
1636     mips64
1637     parisc
1638     ppc
1639     ppc64
1640     s390
1641     sh4
1642     sparc
1643     sparc64
1644     tilegx
1645     tilepro
1646     tomi
1647     x86
1648     x86_32
1649     x86_64
1650 "
1651
1652 ARCH_EXT_LIST_ARM="
1653     armv5te
1654     armv6
1655     armv6t2
1656     armv8
1657     neon
1658     vfp
1659     vfpv3
1660     setend
1661 "
1662
1663 ARCH_EXT_LIST_MIPS="
1664     mipsfpu
1665     mips32r2
1666     mips64r2
1667     mips32r6
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     parity
1740     rdtsc
1741     sarestart
1742     sync_val_compare_and_swap
1743 "
1744 HAVE_LIST_CMDLINE="
1745     inline_asm
1746     symver
1747     yasm
1748 "
1749
1750 HAVE_LIST_PUB="
1751     bigendian
1752     fast_unaligned
1753     incompatible_libav_abi
1754 "
1755
1756 HEADERS_LIST="
1757     alsa_asoundlib_h
1758     altivec_h
1759     arpa_inet_h
1760     asm_types_h
1761     cdio_paranoia_h
1762     cdio_paranoia_paranoia_h
1763     dev_bktr_ioctl_bt848_h
1764     dev_bktr_ioctl_meteor_h
1765     dev_ic_bt8xx_h
1766     dev_video_bktr_ioctl_bt848_h
1767     dev_video_meteor_ioctl_meteor_h
1768     direct_h
1769     dirent_h
1770     dlfcn_h
1771     d3d11_h
1772     dxva_h
1773     ES2_gl_h
1774     gsm_h
1775     io_h
1776     mach_mach_time_h
1777     machine_ioctl_bt848_h
1778     machine_ioctl_meteor_h
1779     malloc_h
1780     openjpeg_2_1_openjpeg_h
1781     openjpeg_2_0_openjpeg_h
1782     openjpeg_1_5_openjpeg_h
1783     OpenGL_gl3_h
1784     poll_h
1785     sndio_h
1786     soundcard_h
1787     sys_mman_h
1788     sys_param_h
1789     sys_resource_h
1790     sys_select_h
1791     sys_soundcard_h
1792     sys_time_h
1793     sys_un_h
1794     sys_videoio_h
1795     termios_h
1796     udplite_h
1797     unistd_h
1798     valgrind_valgrind_h
1799     windows_h
1800     winsock2_h
1801 "
1802
1803 INTRINSICS_LIST="
1804     intrinsics_neon
1805 "
1806
1807 COMPLEX_FUNCS="
1808     cabs
1809     cexp
1810 "
1811
1812 MATH_FUNCS="
1813     atanf
1814     atan2f
1815     cbrt
1816     cbrtf
1817     copysign
1818     cosf
1819     erf
1820     exp2
1821     exp2f
1822     expf
1823     hypot
1824     isinf
1825     isnan
1826     ldexpf
1827     llrint
1828     llrintf
1829     log2
1830     log2f
1831     log10f
1832     lrint
1833     lrintf
1834     powf
1835     rint
1836     round
1837     roundf
1838     sinf
1839     trunc
1840     truncf
1841 "
1842
1843 SYSTEM_FUNCS="
1844     access
1845     aligned_malloc
1846     arc4random
1847     clock_gettime
1848     closesocket
1849     CommandLineToArgvW
1850     CoTaskMemFree
1851     CryptGenRandom
1852     dlopen
1853     fcntl
1854     flt_lim
1855     fork
1856     getaddrinfo
1857     gethrtime
1858     getopt
1859     GetProcessAffinityMask
1860     GetProcessMemoryInfo
1861     GetProcessTimes
1862     getrusage
1863     GetSystemTimeAsFileTime
1864     gettimeofday
1865     glob
1866     glXGetProcAddress
1867     gmtime_r
1868     inet_aton
1869     isatty
1870     jack_port_get_latency_range
1871     kbhit
1872     localtime_r
1873     lstat
1874     lzo1x_999_compress
1875     mach_absolute_time
1876     MapViewOfFile
1877     memalign
1878     mkstemp
1879     mmap
1880     mprotect
1881     nanosleep
1882     PeekNamedPipe
1883     posix_memalign
1884     pthread_cancel
1885     sched_getaffinity
1886     SetConsoleTextAttribute
1887     SetConsoleCtrlHandler
1888     setmode
1889     setrlimit
1890     Sleep
1891     strerror_r
1892     sysconf
1893     sysctl
1894     usleep
1895     UTGetOSTypeFromString
1896     VirtualAlloc
1897     wglGetProcAddress
1898 "
1899
1900 TOOLCHAIN_FEATURES="
1901     as_dn_directive
1902     as_func
1903     as_object_arch
1904     asm_mod_q
1905     attribute_may_alias
1906     attribute_packed
1907     ebp_available
1908     ebx_available
1909     gnu_as
1910     gnu_windres
1911     ibm_asm
1912     inline_asm_labels
1913     inline_asm_nonlocal_labels
1914     inline_asm_direct_symbol_refs
1915     pragma_deprecated
1916     rsync_contimeout
1917     symver_asm_label
1918     symver_gnu_asm
1919     vfp_args
1920     xform_asm
1921     xmm_clobbers
1922 "
1923
1924 TYPES_LIST="
1925     CONDITION_VARIABLE_Ptr
1926     socklen_t
1927     struct_addrinfo
1928     struct_group_source_req
1929     struct_ip_mreq_source
1930     struct_ipv6_mreq
1931     struct_pollfd
1932     struct_rusage_ru_maxrss
1933     struct_sctp_event_subscribe
1934     struct_sockaddr_in6
1935     struct_sockaddr_sa_len
1936     struct_sockaddr_storage
1937     struct_stat_st_mtim_tv_nsec
1938     struct_v4l2_frmivalenum_discrete
1939 "
1940
1941 HAVE_LIST="
1942     $ARCH_EXT_LIST
1943     $(add_suffix _external $ARCH_EXT_LIST)
1944     $(add_suffix _inline   $ARCH_EXT_LIST)
1945     $ARCH_FEATURES
1946     $ATOMICS_LIST
1947     $BUILTIN_LIST
1948     $COMPLEX_FUNCS
1949     $HAVE_LIST_CMDLINE
1950     $HAVE_LIST_PUB
1951     $HEADERS_LIST
1952     $INTRINSICS_LIST
1953     $MATH_FUNCS
1954     $SYSTEM_FUNCS
1955     $THREADS_LIST
1956     $TOOLCHAIN_FEATURES
1957     $TYPES_LIST
1958     atomics_native
1959     dos_paths
1960     dxva2api_cobj
1961     dxva2_lib
1962     winrt
1963     libc_msvcrt
1964     libdc1394_1
1965     libdc1394_2
1966     makeinfo
1967     makeinfo_html
1968     perl
1969     pod2man
1970     sdl
1971     section_data_rel_ro
1972     texi2html
1973     threads
1974     vaapi_x11
1975     vdpau_x11
1976     xlib
1977 "
1978
1979 # options emitted with CONFIG_ prefix but not available on the command line
1980 CONFIG_EXTRA="
1981     aandcttables
1982     ac3dsp
1983     audio_frame_queue
1984     audiodsp
1985     blockdsp
1986     bswapdsp
1987     cabac
1988     dirac_parse
1989     dvprofile
1990     exif
1991     faandct
1992     faanidct
1993     fdctdsp
1994     flacdsp
1995     fmtconvert
1996     frame_thread_encoder
1997     g722dsp
1998     golomb
1999     gplv3
2000     h263dsp
2001     h264chroma
2002     h264dsp
2003     h264pred
2004     h264qpel
2005     hpeldsp
2006     huffman
2007     huffyuvdsp
2008     huffyuvencdsp
2009     idctdsp
2010     iirfilter
2011     imdct15
2012     intrax8
2013     ividsp
2014     jpegtables
2015     libx262
2016     lgplv3
2017     llauddsp
2018     llviddsp
2019     lpc
2020     lzf
2021     me_cmp
2022     mpeg_er
2023     mpegaudio
2024     mpegaudiodsp
2025     mpegvideo
2026     mpegvideoenc
2027     mss34dsp
2028     pixblockdsp
2029     qpeldsp
2030     qsv
2031     qsvdec
2032     qsvenc
2033     rangecoder
2034     riffdec
2035     riffenc
2036     rtpdec
2037     rtpenc_chain
2038     rv34dsp
2039     sinewin
2040     snappy
2041     startcode
2042     texturedsp
2043     texturedspenc
2044     tpeldsp
2045     videodsp
2046     vp3dsp
2047     vp56dsp
2048     vp8dsp
2049     wma_freqs
2050     wmv2dsp
2051 "
2052
2053 CMDLINE_SELECT="
2054     $ARCH_EXT_LIST
2055     $CONFIG_LIST
2056     $HAVE_LIST_CMDLINE
2057     $THREADS_LIST
2058     asm
2059     cross_compile
2060     debug
2061     extra_warnings
2062     logging
2063     lto
2064     optimizations
2065     rpath
2066     stripping
2067 "
2068
2069 PATHS_LIST="
2070     bindir
2071     datadir
2072     docdir
2073     incdir
2074     libdir
2075     mandir
2076     pkgconfigdir
2077     prefix
2078     shlibdir
2079 "
2080
2081 CMDLINE_SET="
2082     $PATHS_LIST
2083     ar
2084     arch
2085     as
2086     assert_level
2087     build_suffix
2088     cc
2089     objcc
2090     cpu
2091     cross_prefix
2092     custom_allocator
2093     cxx
2094     dep_cc
2095     doxygen
2096     env
2097     extra_version
2098     gas
2099     host_cc
2100     host_cflags
2101     host_ld
2102     host_ldflags
2103     host_libs
2104     host_os
2105     install
2106     ld
2107     logfile
2108     malloc_prefix
2109     nm
2110     optflags
2111     pkg_config
2112     pkg_config_flags
2113     progs_suffix
2114     random_seed
2115     ranlib
2116     samples
2117     strip
2118     sws_max_filter_size
2119     sysinclude
2120     sysroot
2121     target_exec
2122     target_os
2123     target_path
2124     target_samples
2125     tempprefix
2126     toolchain
2127     valgrind
2128     yasmexe
2129 "
2130
2131 CMDLINE_APPEND="
2132     extra_cflags
2133     extra_cxxflags
2134     extra_objcflags
2135     host_cppflags
2136 "
2137
2138 # code dependency declarations
2139
2140 # architecture extensions
2141
2142 armv5te_deps="arm"
2143 armv6_deps="arm"
2144 armv6t2_deps="arm"
2145 armv8_deps="aarch64"
2146 neon_deps_any="aarch64 arm"
2147 intrinsics_neon_deps="neon"
2148 vfp_deps_any="aarch64 arm"
2149 vfpv3_deps="vfp"
2150 setend_deps="arm"
2151
2152 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2153
2154 mipsfpu_deps="mips"
2155 mipsdsp_deps="mips"
2156 mipsdspr2_deps="mips"
2157 mips32r2_deps="mips"
2158 mips32r6_deps="mips"
2159 mips64r2_deps="mips"
2160 mips64r6_deps="mips"
2161 msa_deps="mips"
2162 mmi_deps="mips"
2163
2164 altivec_deps="ppc"
2165 dcbzl_deps="ppc"
2166 ldbrx_deps="ppc"
2167 ppc4xx_deps="ppc"
2168 vsx_deps="altivec"
2169 power8_deps="vsx"
2170
2171 cpunop_deps="i686"
2172 x86_64_select="i686"
2173 x86_64_suggest="fast_cmov"
2174
2175 amd3dnow_deps="mmx"
2176 amd3dnowext_deps="amd3dnow"
2177 i686_deps="x86"
2178 mmx_deps="x86"
2179 mmxext_deps="mmx"
2180 sse_deps="mmxext"
2181 sse2_deps="sse"
2182 sse3_deps="sse2"
2183 ssse3_deps="sse3"
2184 sse4_deps="ssse3"
2185 sse42_deps="sse4"
2186 aesni_deps="sse42"
2187 avx_deps="sse42"
2188 xop_deps="avx"
2189 fma3_deps="avx"
2190 fma4_deps="avx"
2191 avx2_deps="avx"
2192
2193 mmx_external_deps="yasm"
2194 mmx_inline_deps="inline_asm"
2195 mmx_suggest="mmx_external mmx_inline"
2196
2197 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2198     eval dep=\$${ext}_deps
2199     eval ${ext}_external_deps='"${dep}_external"'
2200     eval ${ext}_inline_deps='"${dep}_inline"'
2201     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2202 done
2203
2204 aligned_stack_if_any="aarch64 ppc x86"
2205 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2206 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2207 fast_unaligned_if_any="aarch64 ppc x86"
2208 simd_align_16_if_any="altivec neon sse"
2209
2210 # system capabilities
2211 symver_if_any="symver_asm_label symver_gnu_asm"
2212 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2213
2214 # threading support
2215 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2216 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2217 atomics_win32_if="MemoryBarrier"
2218 atomics_native_if_any="$ATOMICS_LIST"
2219 w32threads_deps="atomics_native"
2220 threads_if_any="$THREADS_LIST"
2221
2222 # subsystems
2223 dct_select="rdft"
2224 dirac_parse_select="golomb"
2225 error_resilience_select="me_cmp"
2226 faandct_deps="faan fdctdsp"
2227 faanidct_deps="faan idctdsp"
2228 frame_thread_encoder_deps="encoders threads"
2229 intrax8_select="error_resilience"
2230 mdct_select="fft"
2231 rdft_select="fft"
2232 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2233 mpeg_er_select="error_resilience"
2234 mpegaudio_select="mpegaudiodsp"
2235 mpegaudiodsp_select="dct"
2236 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2237 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2238 qsvdec_select="qsv"
2239 qsvenc_select="qsv"
2240
2241 # decoders / encoders
2242 aac_decoder_select="imdct15 mdct sinewin"
2243 aac_fixed_decoder_select="mdct sinewin"
2244 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2245 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2246 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2247 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2248 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2249 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2250 adpcm_g722_decoder_select="g722dsp"
2251 adpcm_g722_encoder_select="g722dsp"
2252 aic_decoder_select="golomb idctdsp"
2253 alac_encoder_select="lpc"
2254 als_decoder_select="bswapdsp"
2255 amrnb_decoder_select="lsp"
2256 amrwb_decoder_select="lsp"
2257 amv_decoder_select="sp5x_decoder exif"
2258 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2259 ape_decoder_select="bswapdsp llauddsp"
2260 apng_decoder_select="zlib"
2261 apng_encoder_select="huffyuvencdsp zlib"
2262 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2263 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2264 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2265 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2266 atrac1_decoder_select="mdct sinewin"
2267 atrac3_decoder_select="mdct"
2268 atrac3p_decoder_select="mdct sinewin"
2269 avrn_decoder_select="exif jpegtables"
2270 bink_decoder_select="blockdsp hpeldsp"
2271 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2272 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2273 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2274 cllc_decoder_select="bswapdsp"
2275 comfortnoise_encoder_select="lpc"
2276 cook_decoder_select="audiodsp mdct sinewin"
2277 cscd_decoder_select="lzo"
2278 cscd_decoder_suggest="zlib"
2279 dca_decoder_select="fmtconvert mdct"
2280 dds_decoder_select="texturedsp"
2281 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2282 dnxhd_decoder_select="blockdsp idctdsp"
2283 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2284 dvvideo_decoder_select="dvprofile idctdsp"
2285 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2286 dxa_decoder_select="zlib"
2287 dxv_decoder_select="lzf texturedsp"
2288 eac3_decoder_select="ac3_decoder"
2289 eac3_encoder_select="ac3_encoder"
2290 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2291 eatgq_decoder_select="aandcttables"
2292 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2293 exr_decoder_select="zlib"
2294 ffv1_decoder_select="golomb rangecoder"
2295 ffv1_encoder_select="rangecoder"
2296 ffvhuff_decoder_select="huffyuv_decoder"
2297 ffvhuff_encoder_select="huffyuv_encoder"
2298 fic_decoder_select="golomb"
2299 flac_decoder_select="flacdsp golomb"
2300 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2301 flashsv_decoder_select="zlib"
2302 flashsv_encoder_select="zlib"
2303 flashsv2_encoder_select="zlib"
2304 flashsv2_decoder_select="zlib"
2305 flv_decoder_select="h263_decoder"
2306 flv_encoder_select="h263_encoder"
2307 fourxm_decoder_select="blockdsp bswapdsp"
2308 fraps_decoder_select="bswapdsp huffman"
2309 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2310 g729_decoder_select="audiodsp"
2311 h261_decoder_select="mpegvideo"
2312 h261_encoder_select="aandcttables mpegvideoenc"
2313 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2314 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2315 h263i_decoder_select="h263_decoder"
2316 h263p_decoder_select="h263_decoder"
2317 h263p_encoder_select="h263_encoder"
2318 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2319 h264_decoder_suggest="error_resilience"
2320 h264_qsv_decoder_deps="libmfx"
2321 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2322 h264_qsv_encoder_deps="libmfx"
2323 h264_qsv_encoder_select="qsvenc"
2324 hap_decoder_select="snappy texturedsp"
2325 hap_encoder_deps="libsnappy"
2326 hap_encoder_select="texturedspenc"
2327 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2328 hevc_qsv_encoder_deps="libmfx"
2329 hevc_qsv_decoder_deps="libmfx"
2330 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2331 hevc_qsv_encoder_select="qsvenc"
2332 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2333 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2334 iac_decoder_select="imc_decoder"
2335 imc_decoder_select="bswapdsp fft mdct sinewin"
2336 indeo3_decoder_select="hpeldsp"
2337 indeo4_decoder_select="ividsp"
2338 indeo5_decoder_select="ividsp"
2339 interplay_video_decoder_select="hpeldsp"
2340 jpegls_decoder_select="golomb mjpeg_decoder"
2341 jpegls_encoder_select="golomb"
2342 jv_decoder_select="blockdsp"
2343 lagarith_decoder_select="huffyuvdsp"
2344 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2345 loco_decoder_select="golomb"
2346 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2347 metasound_decoder_select="lsp mdct sinewin"
2348 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2349 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2350 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2351 mjpegb_decoder_select="mjpeg_decoder"
2352 mlp_decoder_select="mlp_parser"
2353 motionpixels_decoder_select="bswapdsp"
2354 mp1_decoder_select="mpegaudio"
2355 mp1float_decoder_select="mpegaudio"
2356 mp2_decoder_select="mpegaudio"
2357 mp2float_decoder_select="mpegaudio"
2358 mp3_decoder_select="mpegaudio"
2359 mp3adu_decoder_select="mpegaudio"
2360 mp3adufloat_decoder_select="mpegaudio"
2361 mp3float_decoder_select="mpegaudio"
2362 mp3on4_decoder_select="mpegaudio"
2363 mp3on4float_decoder_select="mpegaudio"
2364 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2365 mpc8_decoder_select="mpegaudiodsp"
2366 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2367 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2368 mpegvideo_decoder_select="mpegvideo"
2369 mpeg1video_decoder_select="mpegvideo"
2370 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2371 mpeg2video_decoder_select="mpegvideo"
2372 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2373 mpeg2_qsv_decoder_deps="libmfx"
2374 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2375 mpeg2_qsv_encoder_deps="libmfx"
2376 mpeg2_qsv_encoder_select="qsvenc"
2377 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2378 mpeg4_encoder_select="h263_encoder"
2379 msa1_decoder_select="mss34dsp"
2380 msmpeg4v1_decoder_select="h263_decoder"
2381 msmpeg4v2_decoder_select="h263_decoder"
2382 msmpeg4v2_encoder_select="h263_encoder"
2383 msmpeg4v3_decoder_select="h263_decoder"
2384 msmpeg4v3_encoder_select="h263_encoder"
2385 mss2_decoder_select="vc1_decoder"
2386 mts2_decoder_select="mss34dsp"
2387 mxpeg_decoder_select="mjpeg_decoder"
2388 nellymoser_decoder_select="mdct sinewin"
2389 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2390 nuv_decoder_select="idctdsp lzo"
2391 on2avc_decoder_select="mdct"
2392 opus_decoder_deps="swresample"
2393 opus_decoder_select="imdct15"
2394 png_decoder_select="zlib"
2395 png_encoder_select="huffyuvencdsp zlib"
2396 prores_decoder_select="blockdsp idctdsp"
2397 prores_encoder_select="fdctdsp"
2398 qcelp_decoder_select="lsp"
2399 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2400 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2401 ra_144_decoder_select="audiodsp"
2402 ralf_decoder_select="golomb"
2403 rawvideo_decoder_select="bswapdsp"
2404 rscc_decoder_select="zlib"
2405 rtjpeg_decoder_select="me_cmp"
2406 rv10_decoder_select="h263_decoder"
2407 rv10_encoder_select="h263_encoder"
2408 rv20_decoder_select="h263_decoder"
2409 rv20_encoder_select="h263_encoder"
2410 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2411 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2412 screenpresso_decoder_select="zlib"
2413 shorten_decoder_select="golomb"
2414 sipr_decoder_select="lsp"
2415 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2416 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2417 sonic_decoder_select="golomb rangecoder"
2418 sonic_encoder_select="golomb rangecoder"
2419 sonic_ls_encoder_select="golomb rangecoder"
2420 sp5x_decoder_select="mjpeg_decoder"
2421 svq1_decoder_select="hpeldsp"
2422 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2423 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2424 svq3_decoder_suggest="zlib"
2425 tak_decoder_select="audiodsp"
2426 tdsc_decoder_select="zlib mjpeg_decoder"
2427 theora_decoder_select="vp3_decoder"
2428 thp_decoder_select="mjpeg_decoder"
2429 tiff_decoder_suggest="zlib lzma"
2430 tiff_encoder_suggest="zlib"
2431 truehd_decoder_select="mlp_parser"
2432 truemotion2_decoder_select="bswapdsp"
2433 truespeech_decoder_select="bswapdsp"
2434 tscc_decoder_select="zlib"
2435 twinvq_decoder_select="mdct lsp sinewin"
2436 txd_decoder_select="texturedsp"
2437 utvideo_decoder_select="bswapdsp"
2438 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2439 vble_decoder_select="huffyuvdsp"
2440 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2441 vc1image_decoder_select="vc1_decoder"
2442 vc1_qsv_decoder_deps="libmfx"
2443 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2444 vorbis_decoder_select="mdct"
2445 vorbis_encoder_select="mdct"
2446 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2447 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2448 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2449 vp6a_decoder_select="vp6_decoder"
2450 vp6f_decoder_select="vp6_decoder"
2451 vp7_decoder_select="h264pred videodsp vp8dsp"
2452 vp8_decoder_select="h264pred videodsp vp8dsp"
2453 vp9_decoder_select="videodsp vp9_parser"
2454 webp_decoder_select="vp8_decoder"
2455 wmalossless_decoder_select="llauddsp"
2456 wmapro_decoder_select="mdct sinewin wma_freqs"
2457 wmav1_decoder_select="mdct sinewin wma_freqs"
2458 wmav1_encoder_select="mdct sinewin wma_freqs"
2459 wmav2_decoder_select="mdct sinewin wma_freqs"
2460 wmav2_encoder_select="mdct sinewin wma_freqs"
2461 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2462 wmv1_decoder_select="h263_decoder"
2463 wmv1_encoder_select="h263_encoder"
2464 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2465 wmv2_encoder_select="h263_encoder wmv2dsp"
2466 wmv3_decoder_select="vc1_decoder"
2467 wmv3image_decoder_select="wmv3_decoder"
2468 zerocodec_decoder_select="zlib"
2469 zlib_decoder_select="zlib"
2470 zlib_encoder_select="zlib"
2471 zmbv_decoder_select="zlib"
2472 zmbv_encoder_select="zlib"
2473
2474 # hardware accelerators
2475 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2476 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2477 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2478 vaapi_deps="va_va_h"
2479 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2480 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2481 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2482 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2483 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2484 xvmc_deps="X11_extensions_XvMClib_h"
2485
2486 h263_vaapi_hwaccel_deps="vaapi"
2487 h263_vaapi_hwaccel_select="h263_decoder"
2488 h263_videotoolbox_hwaccel_deps="videotoolbox"
2489 h263_videotoolbox_hwaccel_select="h263_decoder"
2490 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2491 h264_d3d11va_hwaccel_deps="d3d11va"
2492 h264_d3d11va_hwaccel_select="h264_decoder"
2493 h264_dxva2_hwaccel_deps="dxva2"
2494 h264_dxva2_hwaccel_select="h264_decoder"
2495 h264_mmal_decoder_deps="mmal"
2496 h264_mmal_hwaccel_deps="mmal"
2497 h264_mmal_decoder_select="h264_decoder"
2498 h264_mmal_encoder_deps="mmal"
2499 h264_qsv_hwaccel_deps="libmfx"
2500 h264_vaapi_hwaccel_deps="vaapi"
2501 h264_vaapi_hwaccel_select="h264_decoder"
2502 h264_vda_decoder_deps="vda"
2503 h264_vda_decoder_select="h264_decoder"
2504 h264_vda_hwaccel_deps="vda"
2505 h264_vda_hwaccel_select="h264_decoder"
2506 h264_vda_old_hwaccel_deps="vda"
2507 h264_vda_old_hwaccel_select="h264_decoder"
2508 h264_vdpau_decoder_deps="vdpau"
2509 h264_vdpau_decoder_select="h264_decoder"
2510 h264_vdpau_hwaccel_deps="vdpau"
2511 h264_vdpau_hwaccel_select="h264_decoder"
2512 h264_videotoolbox_hwaccel_deps="videotoolbox"
2513 h264_videotoolbox_hwaccel_select="h264_decoder"
2514 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2515 hevc_d3d11va_hwaccel_select="hevc_decoder"
2516 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2517 hevc_dxva2_hwaccel_select="hevc_decoder"
2518 hevc_qsv_hwaccel_deps="libmfx"
2519 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2520 hevc_vaapi_hwaccel_select="hevc_decoder"
2521 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2522 hevc_vdpau_hwaccel_select="hevc_decoder"
2523 mpeg_vdpau_decoder_deps="vdpau"
2524 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2525 mpeg_xvmc_hwaccel_deps="xvmc"
2526 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2527 mpeg1_vdpau_decoder_deps="vdpau"
2528 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2529 mpeg1_vdpau_hwaccel_deps="vdpau"
2530 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2531 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2532 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2533 mpeg1_xvmc_hwaccel_deps="xvmc"
2534 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2535 mpeg2_crystalhd_decoder_select="crystalhd"
2536 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2537 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2538 mpeg2_dxva2_hwaccel_deps="dxva2"
2539 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2540 mpeg2_mmal_decoder_deps="mmal"
2541 mpeg2_mmal_hwaccel_deps="mmal"
2542 mpeg2_mmal_decoder_select="mpeg2video_decoder"
2543 mpeg2_qsv_hwaccel_deps="libmfx"
2544 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2545 mpeg2_vaapi_hwaccel_deps="vaapi"
2546 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2547 mpeg2_vdpau_hwaccel_deps="vdpau"
2548 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2549 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2550 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2551 mpeg2_xvmc_hwaccel_deps="xvmc"
2552 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2553 mpeg4_crystalhd_decoder_select="crystalhd"
2554 mpeg4_vaapi_hwaccel_deps="vaapi"
2555 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2556 mpeg4_vdpau_decoder_deps="vdpau"
2557 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2558 mpeg4_vdpau_hwaccel_deps="vdpau"
2559 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2560 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2561 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2562 msmpeg4_crystalhd_decoder_select="crystalhd"
2563 vc1_crystalhd_decoder_select="crystalhd"
2564 vc1_d3d11va_hwaccel_deps="d3d11va"
2565 vc1_d3d11va_hwaccel_select="vc1_decoder"
2566 vc1_dxva2_hwaccel_deps="dxva2"
2567 vc1_dxva2_hwaccel_select="vc1_decoder"
2568 vc1_vaapi_hwaccel_deps="vaapi"
2569 vc1_vaapi_hwaccel_select="vc1_decoder"
2570 vc1_vdpau_decoder_deps="vdpau"
2571 vc1_vdpau_decoder_select="vc1_decoder"
2572 vc1_vdpau_hwaccel_deps="vdpau"
2573 vc1_vdpau_hwaccel_select="vc1_decoder"
2574 vc1_mmal_decoder_deps="mmal"
2575 vc1_mmal_hwaccel_deps="mmal"
2576 vc1_mmal_decoder_select="vc1_decoder"
2577 vc1_qsv_hwaccel_deps="libmfx"
2578 vc1_qsv_hwaccel_select="qsvdec_vc1"
2579 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2580 vp9_d3d11va_hwaccel_select="vp9_decoder"
2581 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2582 vp9_dxva2_hwaccel_select="vp9_decoder"
2583 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2584 vp9_vaapi_hwaccel_select="vp9_decoder"
2585 wmv3_crystalhd_decoder_select="crystalhd"
2586 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2587 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2588 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2589 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2590 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2591
2592 # parsers
2593 h264_parser_select="h264_decoder"
2594 hevc_parser_select="golomb"
2595 mpegvideo_parser_select="mpegvideo"
2596 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2597 vc1_parser_select="mpegvideo startcode vc1_decoder"
2598
2599 # bitstream_filters
2600 mjpeg2jpeg_bsf_select="jpegtables"
2601
2602 # external libraries
2603 chromaprint_muxer_deps="chromaprint"
2604 libaacplus_encoder_deps="libaacplus"
2605 libcelt_decoder_deps="libcelt"
2606 libdcadec_decoder_deps="libdcadec"
2607 libfaac_encoder_deps="libfaac"
2608 libfaac_encoder_select="audio_frame_queue"
2609 libfdk_aac_decoder_deps="libfdk_aac"
2610 libfdk_aac_encoder_deps="libfdk_aac"
2611 libfdk_aac_encoder_select="audio_frame_queue"
2612 libgme_demuxer_deps="libgme"
2613 libgsm_decoder_deps="libgsm"
2614 libgsm_encoder_deps="libgsm"
2615 libgsm_ms_decoder_deps="libgsm"
2616 libgsm_ms_encoder_deps="libgsm"
2617 libilbc_decoder_deps="libilbc"
2618 libilbc_encoder_deps="libilbc"
2619 libkvazaar_encoder_deps="libkvazaar"
2620 libmodplug_demuxer_deps="libmodplug"
2621 libmp3lame_encoder_deps="libmp3lame"
2622 libmp3lame_encoder_select="audio_frame_queue"
2623 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2624 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2625 libopencore_amrnb_encoder_select="audio_frame_queue"
2626 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2627 libopenh264_encoder_deps="libopenh264"
2628 libopenjpeg_decoder_deps="libopenjpeg"
2629 libopenjpeg_encoder_deps="libopenjpeg"
2630 libopus_decoder_deps="libopus"
2631 libopus_encoder_deps="libopus"
2632 libopus_encoder_select="audio_frame_queue"
2633 libquvi_demuxer_deps="libquvi"
2634 libschroedinger_decoder_deps="libschroedinger"
2635 libschroedinger_encoder_deps="libschroedinger"
2636 libshine_encoder_deps="libshine"
2637 libshine_encoder_select="audio_frame_queue"
2638 libspeex_decoder_deps="libspeex"
2639 libspeex_encoder_deps="libspeex"
2640 libspeex_encoder_select="audio_frame_queue"
2641 libtheora_encoder_deps="libtheora"
2642 libtwolame_encoder_deps="libtwolame"
2643 libvo_aacenc_encoder_deps="libvo_aacenc"
2644 libvo_aacenc_encoder_select="audio_frame_queue"
2645 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2646 libvorbis_decoder_deps="libvorbis"
2647 libvorbis_encoder_deps="libvorbis"
2648 libvorbis_encoder_select="audio_frame_queue"
2649 libvpx_vp8_decoder_deps="libvpx"
2650 libvpx_vp8_encoder_deps="libvpx"
2651 libvpx_vp9_decoder_deps="libvpx"
2652 libvpx_vp9_encoder_deps="libvpx"
2653 libwavpack_encoder_deps="libwavpack"
2654 libwebp_encoder_deps="libwebp"
2655 libwebp_anim_encoder_deps="libwebp"
2656 libx262_encoder_deps="libx262"
2657 libx264_encoder_deps="libx264"
2658 libx264rgb_encoder_deps="libx264"
2659 libx264rgb_encoder_select="libx264_encoder"
2660 libx265_encoder_deps="libx265"
2661 libxavs_encoder_deps="libxavs"
2662 libxvid_encoder_deps="libxvid"
2663 libutvideo_decoder_deps="libutvideo"
2664 libutvideo_encoder_deps="libutvideo"
2665 libzvbi_teletext_decoder_deps="libzvbi"
2666 nvenc_encoder_deps="nvenc"
2667 nvenc_h264_encoder_deps="nvenc"
2668 nvenc_hevc_encoder_deps="nvenc"
2669
2670 # demuxers / muxers
2671 ac3_demuxer_select="ac3_parser"
2672 asf_demuxer_select="riffdec"
2673 asf_o_demuxer_select="riffdec"
2674 asf_muxer_select="riffenc"
2675 asf_stream_muxer_select="asf_muxer"
2676 avi_demuxer_select="riffdec exif"
2677 avi_muxer_select="riffenc"
2678 avisynth_demuxer_deps="avisynth"
2679 avisynth_demuxer_select="riffdec"
2680 caf_demuxer_select="riffdec"
2681 dash_muxer_select="mp4_muxer"
2682 dirac_demuxer_select="dirac_parser"
2683 dts_demuxer_select="dca_parser"
2684 dtshd_demuxer_select="dca_parser"
2685 dv_demuxer_select="dvprofile"
2686 dv_muxer_select="dvprofile"
2687 dxa_demuxer_select="riffdec"
2688 eac3_demuxer_select="ac3_parser"
2689 f4v_muxer_select="mov_muxer"
2690 flac_demuxer_select="flac_parser"
2691 hds_muxer_select="flv_muxer"
2692 hls_muxer_select="mpegts_muxer"
2693 image2_alias_pix_demuxer_select="image2_demuxer"
2694 image2_brender_pix_demuxer_select="image2_demuxer"
2695 ipod_muxer_select="mov_muxer"
2696 ismv_muxer_select="mov_muxer"
2697 libnut_demuxer_deps="libnut"
2698 libnut_muxer_deps="libnut"
2699 matroska_audio_muxer_select="matroska_muxer"
2700 matroska_demuxer_select="riffdec"
2701 matroska_demuxer_suggest="bzlib lzo zlib"
2702 matroska_muxer_select="riffenc"
2703 mmf_muxer_select="riffenc"
2704 mov_demuxer_select="riffdec"
2705 mov_demuxer_suggest="zlib"
2706 mov_muxer_select="riffenc rtpenc_chain"
2707 mp3_demuxer_select="mpegaudio_parser"
2708 mp4_muxer_select="mov_muxer"
2709 mpegts_muxer_select="adts_muxer latm_muxer"
2710 mpegtsraw_demuxer_select="mpegts_demuxer"
2711 mxf_d10_muxer_select="mxf_muxer"
2712 mxf_opatom_muxer_select="mxf_muxer"
2713 nut_muxer_select="riffenc"
2714 nuv_demuxer_select="riffdec"
2715 oga_muxer_select="ogg_muxer"
2716 ogg_demuxer_select="dirac_parse"
2717 opus_muxer_select="ogg_muxer"
2718 psp_muxer_select="mov_muxer"
2719 rtp_demuxer_select="sdp_demuxer"
2720 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2721 rtsp_demuxer_select="http_protocol rtpdec"
2722 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2723 sap_demuxer_select="sdp_demuxer"
2724 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2725 sdp_demuxer_select="rtpdec"
2726 smoothstreaming_muxer_select="ismv_muxer"
2727 spdif_muxer_select="aac_parser"
2728 spx_muxer_select="ogg_muxer"
2729 tak_demuxer_select="tak_parser"
2730 tg2_muxer_select="mov_muxer"
2731 tgp_muxer_select="mov_muxer"
2732 vobsub_demuxer_select="mpegps_demuxer"
2733 w64_demuxer_select="wav_demuxer"
2734 w64_muxer_select="wav_muxer"
2735 wav_demuxer_select="riffdec"
2736 wav_muxer_select="riffenc"
2737 webm_muxer_select="riffenc"
2738 wtv_demuxer_select="riffdec"
2739 wtv_muxer_select="riffenc"
2740 xmv_demuxer_select="riffdec"
2741 xwma_demuxer_select="riffdec"
2742
2743 # indevs / outdevs
2744 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2745 alsa_outdev_deps="alsa_asoundlib_h"
2746 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2747 avfoundation_indev_select="avfoundation"
2748 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2749 caca_outdev_deps="libcaca"
2750 decklink_outdev_deps="decklink pthreads"
2751 decklink_outdev_extralibs="-lstdc++"
2752 decklink_indev_deps="decklink pthreads"
2753 decklink_indev_extralibs="-lstdc++"
2754 dshow_indev_deps="IBaseFilter"
2755 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2756 dv1394_indev_deps="dv1394"
2757 dv1394_indev_select="dv_demuxer"
2758 fbdev_indev_deps="linux_fb_h"
2759 fbdev_outdev_deps="linux_fb_h"
2760 gdigrab_indev_deps="CreateDIBSection"
2761 gdigrab_indev_extralibs="-lgdi32"
2762 gdigrab_indev_select="bmp_decoder"
2763 iec61883_indev_deps="libiec61883"
2764 jack_indev_deps="jack_jack_h sem_timedwait"
2765 lavfi_indev_deps="avfilter"
2766 libcdio_indev_deps="libcdio"
2767 libdc1394_indev_deps="libdc1394"
2768 libv4l2_indev_deps="libv4l2"
2769 openal_indev_deps="openal"
2770 opengl_outdev_deps="opengl"
2771 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2772 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2773 pulse_indev_deps="libpulse"
2774 pulse_outdev_deps="libpulse"
2775 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2776 qtkit_indev_select="qtkit"
2777 sdl_outdev_deps="sdl"
2778 sndio_indev_deps="sndio_h"
2779 sndio_outdev_deps="sndio_h"
2780 v4l_indev_deps="linux_videodev_h"
2781 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2782 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2783 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2784 vfwcap_indev_extralibs="-lavicap32"
2785 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2786 xv_outdev_extralibs="-lXv -lX11 -lXext"
2787 x11grab_indev_deps="x11grab"
2788 x11grab_xcb_indev_deps="libxcb"
2789
2790 # protocols
2791 async_protocol_deps="threads"
2792 bluray_protocol_deps="libbluray"
2793 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2794 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2795 ffrtmpcrypt_protocol_select="tcp_protocol"
2796 ffrtmphttp_protocol_deps="!librtmp_protocol"
2797 ffrtmphttp_protocol_select="http_protocol"
2798 ftp_protocol_select="tcp_protocol"
2799 gopher_protocol_select="network"
2800 http_protocol_select="tcp_protocol"
2801 httpproxy_protocol_select="tcp_protocol"
2802 https_protocol_select="tls_protocol"
2803 icecast_protocol_select="http_protocol"
2804 librtmp_protocol_deps="librtmp"
2805 librtmpe_protocol_deps="librtmp"
2806 librtmps_protocol_deps="librtmp"
2807 librtmpt_protocol_deps="librtmp"
2808 librtmpte_protocol_deps="librtmp"
2809 libsmbclient_protocol_deps="libsmbclient gplv3"
2810 libssh_protocol_deps="libssh"
2811 mmsh_protocol_select="http_protocol"
2812 mmst_protocol_select="network"
2813 rtmp_protocol_deps="!librtmp_protocol"
2814 rtmp_protocol_select="tcp_protocol"
2815 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2816 rtmps_protocol_deps="!librtmp_protocol"
2817 rtmps_protocol_select="tls_protocol"
2818 rtmpt_protocol_select="ffrtmphttp_protocol"
2819 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2820 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2821 rtp_protocol_select="udp_protocol"
2822 sctp_protocol_deps="struct_sctp_event_subscribe"
2823 sctp_protocol_select="network"
2824 srtp_protocol_select="rtp_protocol"
2825 tcp_protocol_select="network"
2826 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2827 tls_gnutls_protocol_select="tcp_protocol"
2828 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2829 tls_openssl_protocol_select="tcp_protocol"
2830 tls_schannel_protocol_deps="schannel"
2831 tls_schannel_protocol_select="tcp_protocol"
2832 tls_securetransport_protocol_deps="securetransport"
2833 tls_securetransport_protocol_select="tcp_protocol"
2834 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2835 udp_protocol_select="network"
2836 udplite_protocol_select="network"
2837 unix_protocol_deps="sys_un_h"
2838 unix_protocol_select="network"
2839
2840 # filters
2841 amovie_filter_deps="avcodec avformat"
2842 aresample_filter_deps="swresample"
2843 ass_filter_deps="libass"
2844 asyncts_filter_deps="avresample"
2845 atempo_filter_deps="avcodec"
2846 atempo_filter_select="rdft"
2847 azmq_filter_deps="libzmq"
2848 blackframe_filter_deps="gpl"
2849 boxblur_filter_deps="gpl"
2850 bs2b_filter_deps="libbs2b"
2851 colormatrix_filter_deps="gpl"
2852 cover_rect_filter_deps="avcodec avformat gpl"
2853 cropdetect_filter_deps="gpl"
2854 delogo_filter_deps="gpl"
2855 deshake_filter_select="pixelutils"
2856 drawtext_filter_deps="libfreetype"
2857 ebur128_filter_deps="gpl"
2858 eq_filter_deps="gpl"
2859 fftfilt_filter_deps="avcodec"
2860 fftfilt_filter_select="rdft"
2861 flite_filter_deps="libflite"
2862 find_rect_filter_deps="avcodec avformat gpl"
2863 frei0r_filter_deps="frei0r dlopen"
2864 frei0r_src_filter_deps="frei0r dlopen"
2865 fspp_filter_deps="gpl"
2866 geq_filter_deps="gpl"
2867 histeq_filter_deps="gpl"
2868 hqdn3d_filter_deps="gpl"
2869 interlace_filter_deps="gpl"
2870 kerndeint_filter_deps="gpl"
2871 ladspa_filter_deps="ladspa dlopen"
2872 mcdeint_filter_deps="avcodec gpl"
2873 movie_filter_deps="avcodec avformat"
2874 mpdecimate_filter_deps="gpl"
2875 mpdecimate_filter_select="pixelutils"
2876 mptestsrc_filter_deps="gpl"
2877 negate_filter_deps="lut_filter"
2878 perspective_filter_deps="gpl"
2879 pp7_filter_deps="gpl"
2880 ocr_filter_deps="libtesseract"
2881 ocv_filter_deps="libopencv"
2882 owdenoise_filter_deps="gpl"
2883 pan_filter_deps="swresample"
2884 phase_filter_deps="gpl"
2885 pp_filter_deps="gpl postproc"
2886 pullup_filter_deps="gpl"
2887 removelogo_filter_deps="avcodec avformat swscale"
2888 repeatfields_filter_deps="gpl"
2889 resample_filter_deps="avresample"
2890 rubberband_filter_deps="librubberband"
2891 sab_filter_deps="gpl swscale"
2892 scale_filter_deps="swscale"
2893 scale2ref_filter_deps="swscale"
2894 select_filter_select="pixelutils"
2895 smartblur_filter_deps="gpl swscale"
2896 showcqt_filter_deps="avcodec avformat swscale"
2897 showcqt_filter_select="fft"
2898 showfreqs_filter_deps="avcodec"
2899 showfreqs_filter_select="fft"
2900 showspectrum_filter_deps="avcodec"
2901 showspectrum_filter_select="rdft"
2902 sofalizer_filter_deps="netcdf avcodec"
2903 sofalizer_filter_select="fft"
2904 spp_filter_deps="gpl avcodec"
2905 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2906 stereo3d_filter_deps="gpl"
2907 subtitles_filter_deps="avformat avcodec libass"
2908 super2xsai_filter_deps="gpl"
2909 tinterlace_filter_deps="gpl"
2910 vidstabdetect_filter_deps="libvidstab"
2911 vidstabtransform_filter_deps="libvidstab"
2912 pixfmts_super2xsai_test_deps="super2xsai_filter"
2913 tinterlace_merge_test_deps="tinterlace_filter"
2914 tinterlace_pad_test_deps="tinterlace_filter"
2915 uspp_filter_deps="gpl avcodec"
2916 zmq_filter_deps="libzmq"
2917 zoompan_filter_deps="swscale"
2918 zscale_filter_deps="libzimg"
2919
2920 # examples
2921 avio_reading="avformat avcodec avutil"
2922 avio_dir_cmd="avformat avutil"
2923 avcodec_example_deps="avcodec avutil"
2924 decoding_encoding_example_deps="avcodec avformat avutil"
2925 demuxing_decoding_example_deps="avcodec avformat avutil"
2926 extract_mvs_example_deps="avcodec avformat avutil"
2927 filter_audio_example_deps="avfilter avutil"
2928 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2929 filtering_video_example_deps="avfilter avcodec avformat avutil"
2930 metadata_example_deps="avformat avutil"
2931 muxing_example_deps="avcodec avformat avutil swscale"
2932 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2933 remuxing_example_deps="avcodec avformat avutil"
2934 resampling_audio_example_deps="avutil swresample"
2935 scaling_video_example_deps="avutil swscale"
2936 transcode_aac_example_deps="avcodec avformat swresample"
2937 transcoding_example_deps="avfilter avcodec avformat avutil"
2938
2939 # libraries, in linking order
2940 avcodec_deps="avutil"
2941 avdevice_deps="avformat avcodec avutil"
2942 avfilter_deps="avutil"
2943 avformat_deps="avcodec avutil"
2944 avresample_deps="avutil"
2945 postproc_deps="avutil gpl"
2946 swresample_deps="avutil"
2947 swscale_deps="avutil"
2948
2949 # programs
2950 ffmpeg_deps="avcodec avfilter avformat swresample"
2951 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2952                null_filter
2953                setpts_filter trim_filter"
2954 ffplay_deps="avcodec avformat swscale swresample sdl"
2955 ffplay_libs='$sdl_libs'
2956 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2957 ffprobe_deps="avcodec avformat"
2958 ffserver_deps="avformat fork sarestart"
2959 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2960
2961 # documentation
2962 podpages_deps="perl"
2963 manpages_deps="perl pod2man"
2964 htmlpages_deps="perl"
2965 htmlpages_deps_any="makeinfo_html texi2html"
2966 txtpages_deps="perl makeinfo"
2967 doc_deps_any="manpages htmlpages podpages txtpages"
2968
2969 # default parameters
2970
2971 logfile="config.log"
2972
2973 # installation paths
2974 prefix_default="/usr/local"
2975 bindir_default='${prefix}/bin'
2976 datadir_default='${prefix}/share/ffmpeg'
2977 docdir_default='${prefix}/share/doc/ffmpeg'
2978 incdir_default='${prefix}/include'
2979 libdir_default='${prefix}/lib'
2980 mandir_default='${prefix}/share/man'
2981
2982 # toolchain
2983 ar_default="ar"
2984 cc_default="gcc"
2985 cxx_default="g++"
2986 host_cc_default="gcc"
2987 cp_f="cp -f"
2988 doxygen_default="doxygen"
2989 install="install"
2990 ln_s="ln -s -f"
2991 nm_default="nm -g"
2992 objformat="elf"
2993 pkg_config_default=pkg-config
2994 ranlib_default="ranlib"
2995 strip_default="strip"
2996 yasmexe_default="yasm"
2997 windres_default="windres"
2998
2999 # OS
3000 target_os_default=$(tolower $(uname -s))
3001 host_os=$target_os_default
3002
3003 # machine
3004 if test "$target_os_default" = aix; then
3005     arch_default=$(uname -p)
3006     strip_default="strip -X32_64"
3007 else
3008     arch_default=$(uname -m)
3009 fi
3010 cpu="generic"
3011 intrinsics="none"
3012
3013 # configurable options
3014 enable $PROGRAM_LIST
3015 enable $DOCUMENT_LIST
3016 enable $EXAMPLE_LIST
3017 enable $(filter_out avresample $LIBRARY_LIST)
3018 enable stripping
3019
3020 enable asm
3021 enable debug
3022 enable doc
3023 enable faan faandct faanidct
3024 enable optimizations
3025 enable runtime_cpudetect
3026 enable safe_bitstream_reader
3027 enable static
3028 enable swscale_alpha
3029 enable valgrind_backtrace
3030
3031 sws_max_filter_size_default=256
3032 set_default sws_max_filter_size
3033
3034 # Enable hwaccels by default.
3035 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3036 enable xlib
3037
3038 # build settings
3039 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3040 LIBPREF="lib"
3041 LIBSUF=".a"
3042 FULLNAME='$(NAME)$(BUILDSUF)'
3043 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3044 SLIBPREF="lib"
3045 SLIBSUF=".so"
3046 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3047 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3048 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3049 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3050 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3051 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3052
3053 asflags_filter=echo
3054 cflags_filter=echo
3055 ldflags_filter=echo
3056
3057 AS_C='-c'
3058 AS_O='-o $@'
3059 CC_C='-c'
3060 CC_E='-E -o $@'
3061 CC_O='-o $@'
3062 CXX_C='-c'
3063 CXX_O='-o $@'
3064 OBJCC_C='-c'
3065 OBJCC_E='-E -o $@'
3066 OBJCC_O='-o $@'
3067 LD_O='-o $@'
3068 LD_LIB='-l%'
3069 LD_PATH='-L'
3070 HOSTCC_C='-c'
3071 HOSTCC_E='-E -o $@'
3072 HOSTCC_O='-o $@'
3073 HOSTLD_O='-o $@'
3074
3075 host_libs='-lm'
3076 host_cflags_filter=echo
3077 host_ldflags_filter=echo
3078
3079 target_path='$(CURDIR)'
3080
3081 # since the object filename is not given with the -MM flag, the compiler
3082 # is only able to print the basename, and we must add the path ourselves
3083 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3084 DEPFLAGS='-MM'
3085
3086 # find source path
3087 if test -f configure; then
3088     source_path=.
3089 else
3090     source_path=$(cd $(dirname "$0"); pwd)
3091     case "$source_path" in
3092         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3093     esac
3094     test -e "$source_path/config.h" &&
3095         die "Out of tree builds are impossible with config.h in source dir."
3096 fi
3097
3098 for v in "$@"; do
3099     r=${v#*=}
3100     l=${v%"$r"}
3101     r=$(sh_quote "$r")
3102     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3103 done
3104
3105 find_things(){
3106     thing=$1
3107     pattern=$2
3108     file=$source_path/$3
3109     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3110 }
3111
3112 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3113 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3114 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3115 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3116 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3117 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3118 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3119 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3120 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3121 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3122 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3123
3124 ALL_COMPONENTS="
3125     $BSF_LIST
3126     $DECODER_LIST
3127     $DEMUXER_LIST
3128     $ENCODER_LIST
3129     $FILTER_LIST
3130     $HWACCEL_LIST
3131     $INDEV_LIST
3132     $MUXER_LIST
3133     $OUTDEV_LIST
3134     $PARSER_LIST
3135     $PROTOCOL_LIST
3136 "
3137
3138 for n in $COMPONENT_LIST; do
3139     v=$(toupper ${n%s})_LIST
3140     eval enable \$$v
3141     eval ${n}_if_any="\$$v"
3142 done
3143
3144 enable $ARCH_EXT_LIST
3145
3146 die_unknown(){
3147     echo "Unknown option \"$1\"."
3148     echo "See $0 --help for available options."
3149     exit 1
3150 }
3151
3152 print_in_columns() {
3153     cols=$(expr $ncols / 24)
3154     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3155 }
3156
3157 show_list() {
3158     suffix=_$1
3159     shift
3160     echo $* | sed s/$suffix//g | print_in_columns
3161     exit 0
3162 }
3163
3164 rand_list(){
3165     IFS=', '
3166     set -- $*
3167     unset IFS
3168     for thing; do
3169         comp=${thing%:*}
3170         prob=${thing#$comp}
3171         prob=${prob#:}
3172         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3173         echo "prob ${prob:-0.5}"
3174         printf '%s\n' $comp
3175     done
3176 }
3177
3178 do_random(){
3179     action=$1
3180     shift
3181     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3182     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3183 }
3184
3185 for opt do
3186     optval="${opt#*=}"
3187     case "$opt" in
3188         --extra-ldflags=*)
3189             add_ldflags $optval
3190         ;;
3191         --extra-ldexeflags=*)
3192             add_ldexeflags $optval
3193         ;;
3194         --extra-ldlibflags=*)
3195             add_ldlibflags $optval
3196         ;;
3197         --extra-libs=*)
3198             add_extralibs $optval
3199         ;;
3200         --disable-devices)
3201             disable $INDEV_LIST $OUTDEV_LIST
3202         ;;
3203         --enable-debug=*)
3204             debuglevel="$optval"
3205         ;;
3206         --disable-programs)
3207             disable $PROGRAM_LIST
3208         ;;
3209         --disable-everything)
3210             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3211         ;;
3212         --disable-all)
3213             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3214             disable $LIBRARY_LIST $PROGRAM_LIST doc
3215             enable avutil
3216         ;;
3217         --enable-random|--disable-random)
3218             action=${opt%%-random}
3219             do_random ${action#--} $COMPONENT_LIST
3220         ;;
3221         --enable-random=*|--disable-random=*)
3222             action=${opt%%-random=*}
3223             do_random ${action#--} $optval
3224         ;;
3225         --enable-*=*|--disable-*=*)
3226             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3227             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3228             eval list=\$$(toupper $thing)_LIST
3229             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3230             list=$(filter "$name" $list)
3231             [ "$list" = "" ] && warn "Option $opt did not match anything"
3232             $action $list
3233         ;;
3234         --enable-?*|--disable-?*)
3235             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3236             if is_in $option $COMPONENT_LIST; then
3237                 test $action = disable && action=unset
3238                 eval $action \$$(toupper ${option%s})_LIST
3239             elif is_in $option $CMDLINE_SELECT; then
3240                 $action $option
3241             else
3242                 die_unknown $opt
3243             fi
3244         ;;
3245         --list-*)
3246             NAME="${opt#--list-}"
3247             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3248             NAME=${NAME%s}
3249             eval show_list $NAME \$$(toupper $NAME)_LIST
3250         ;;
3251         --help|-h) show_help
3252         ;;
3253         --fatal-warnings) enable fatal_warnings
3254         ;;
3255         *)
3256             optname="${opt%%=*}"
3257             optname="${optname#--}"
3258             optname=$(echo "$optname" | sed 's/-/_/g')
3259             if is_in $optname $CMDLINE_SET; then
3260                 eval $optname='$optval'
3261             elif is_in $optname $CMDLINE_APPEND; then
3262                 append $optname "$optval"
3263             else
3264                 die_unknown $opt
3265             fi
3266         ;;
3267     esac
3268 done
3269
3270 for e in $env; do
3271     eval "export $e"
3272 done
3273
3274 disabled logging && logfile=/dev/null
3275
3276 # Disable all the library-specific components if the library itself
3277 # is disabled, see AVCODEC_LIST and following _LIST variables.
3278
3279 disable_components(){
3280     disabled ${1} && disable $(
3281         eval components="\$$(toupper ${1})_COMPONENTS"
3282         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3283     )
3284 }
3285
3286 map 'disable_components $v' $LIBRARY_LIST
3287
3288 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3289 set >> $logfile
3290
3291 test -n "$valgrind" && toolchain="valgrind-memcheck"
3292
3293 case "$toolchain" in
3294     clang-asan)
3295         cc_default="clang"
3296         add_cflags  -fsanitize=address
3297         add_ldflags -fsanitize=address
3298     ;;
3299     clang-tsan)
3300         cc_default="clang"
3301         add_cflags  -fsanitize=thread -pie
3302         add_ldflags -fsanitize=thread -pie
3303     ;;
3304     clang-usan)
3305         cc_default="clang"
3306         add_cflags  -fsanitize=undefined
3307         add_ldflags -fsanitize=undefined
3308     ;;
3309     gcc-asan)
3310         cc_default="gcc"
3311         add_cflags  -fsanitize=address
3312         add_ldflags -fsanitize=address
3313     ;;
3314     gcc-tsan)
3315         cc_default="gcc"
3316         add_cflags  -fsanitize=thread -pie -fPIC
3317         add_ldflags -fsanitize=thread -pie -fPIC
3318     ;;
3319     gcc-usan)
3320         cc_default="gcc"
3321         add_cflags  -fsanitize=undefined
3322         add_ldflags -fsanitize=undefined
3323     ;;
3324     valgrind-massif)
3325         target_exec_default=${valgrind:-"valgrind"}
3326         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"
3327     ;;
3328     valgrind-memcheck)
3329         target_exec_default=${valgrind:-"valgrind"}
3330         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3331     ;;
3332     msvc)
3333         # Check whether the current MSVC version needs the C99 converter.
3334         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3335         # support enough of C99 to build ffmpeg. Default to the new
3336         # behaviour if the regexp was unable to match anything, since this
3337         # successfully parses the version number of existing supported
3338         # versions that require the converter (MSVC 2010 and 2012).
3339         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3340         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3341             cc_default="cl"
3342         else
3343             cc_default="c99wrap cl"
3344         fi
3345         ld_default="$source_path/compat/windows/mslink"
3346         nm_default="dumpbin -symbols"
3347         ar_default="lib"
3348         case "$arch" in
3349         arm*)
3350             as_default="armasm"
3351             ;;
3352         esac
3353         target_os_default="win32"
3354         # Use a relative path for TMPDIR. This makes sure all the
3355         # ffconf temp files are written with a relative path, avoiding
3356         # issues with msys/win32 path conversion for MSVC parameters
3357         # such as -Fo<file> or -out:<file>.
3358         TMPDIR=.
3359     ;;
3360     icl)
3361         cc_default="icl"
3362         ld_default="xilink"
3363         nm_default="dumpbin -symbols"
3364         ar_default="xilib"
3365         target_os_default="win32"
3366         TMPDIR=.
3367     ;;
3368     gcov)
3369         add_cflags  -fprofile-arcs -ftest-coverage
3370         add_ldflags -fprofile-arcs -ftest-coverage
3371     ;;
3372     hardened)
3373         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3374         add_cflags   -fno-strict-overflow -fstack-protector-all
3375         add_ldflags  -Wl,-z,relro -Wl,-z,now
3376     ;;
3377     ?*)
3378         die "Unknown toolchain $toolchain"
3379     ;;
3380 esac
3381
3382 test -n "$cross_prefix" && enable cross_compile
3383
3384 if enabled cross_compile; then
3385     test -n "$arch" && test -n "$target_os" ||
3386         die "Must specify target arch and OS when cross-compiling"
3387 fi
3388
3389 ar_default="${cross_prefix}${ar_default}"
3390 cc_default="${cross_prefix}${cc_default}"
3391 cxx_default="${cross_prefix}${cxx_default}"
3392 nm_default="${cross_prefix}${nm_default}"
3393 pkg_config_default="${cross_prefix}${pkg_config_default}"
3394 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3395     ranlib_default="${cross_prefix}${ranlib_default} -D"
3396 else
3397     ranlib_default="${cross_prefix}${ranlib_default}"
3398 fi
3399 strip_default="${cross_prefix}${strip_default}"
3400 windres_default="${cross_prefix}${windres_default}"
3401
3402 sysinclude_default="${sysroot}/usr/include"
3403
3404 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3405     target_exec target_os yasmexe
3406 enabled cross_compile || host_cc_default=$cc
3407 set_default host_cc
3408
3409 pkg_config_fail_message=""
3410 if ! $pkg_config --version >/dev/null 2>&1; then
3411     warn "$pkg_config not found, library detection may fail."
3412     pkg_config=false
3413 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3414     pkg_config_fail_message="
3415 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3416 fi
3417
3418 if test $doxygen != $doxygen_default && \
3419   ! $doxygen --version >/dev/null 2>&1; then
3420     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3421 fi
3422
3423 exesuf() {
3424     case $1 in
3425         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3426     esac
3427 }
3428
3429 EXESUF=$(exesuf $target_os)
3430 HOSTEXESUF=$(exesuf $host_os)
3431
3432 # set temporary file name
3433 : ${TMPDIR:=$TEMPDIR}
3434 : ${TMPDIR:=$TMP}
3435 : ${TMPDIR:=/tmp}
3436
3437 if [ -n "$tempprefix" ] ; then
3438     mktemp(){
3439         echo $tempprefix.${HOSTNAME}.${UID}
3440     }
3441 elif ! check_cmd mktemp -u XXXXXX; then
3442     # simple replacement for missing mktemp
3443     # NOT SAFE FOR GENERAL USE
3444     mktemp(){
3445         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3446     }
3447 fi
3448
3449 tmpfile(){
3450     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3451         (set -C; exec > $tmp) 2>/dev/null ||
3452         die "Unable to create temporary file in $TMPDIR."
3453     append TMPFILES $tmp
3454     eval $1=$tmp
3455 }
3456
3457 trap 'rm -f -- $TMPFILES' EXIT
3458
3459 tmpfile TMPASM .asm
3460 tmpfile TMPC   .c
3461 tmpfile TMPCPP .cpp
3462 tmpfile TMPE   $EXESUF
3463 tmpfile TMPH   .h
3464 tmpfile TMPM   .m
3465 tmpfile TMPO   .o
3466 tmpfile TMPS   .S
3467 tmpfile TMPSH  .sh
3468 tmpfile TMPV   .ver
3469
3470 unset -f mktemp
3471
3472 chmod +x $TMPE
3473
3474 # make sure we can execute files in $TMPDIR
3475 cat > $TMPSH 2>> $logfile <<EOF
3476 #! /bin/sh
3477 EOF
3478 chmod +x $TMPSH >> $logfile 2>&1
3479 if ! $TMPSH >> $logfile 2>&1; then
3480     cat <<EOF
3481 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3482 variable to another directory and make sure that it is not mounted noexec.
3483 EOF
3484     die "Sanity test failed."
3485 fi
3486
3487 armasm_flags(){
3488     for flag; do
3489         case $flag in
3490             # Filter out MSVC cl.exe options from cflags that shouldn't
3491             # be passed to gas-preprocessor
3492             -M[TD]*)                                            ;;
3493             *)                  echo $flag                      ;;
3494         esac
3495    done
3496 }
3497
3498 ccc_flags(){
3499     for flag; do
3500         case $flag in
3501             -std=c99)           echo -c99                       ;;
3502             -mcpu=*)            echo -arch ${flag#*=}           ;;
3503             -mieee)             echo -ieee                      ;;
3504             -O*|-fast)          echo $flag                      ;;
3505             -fno-math-errno)    echo -assume nomath_errno       ;;
3506             -g)                 echo -g3                        ;;
3507             -Wall)              echo -msg_enable level2         ;;
3508             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3509             -Wl,*)              echo $flag                      ;;
3510             -f*|-W*)                                            ;;
3511             *)                  echo $flag                      ;;
3512         esac
3513    done
3514 }
3515
3516 cparser_flags(){
3517     for flag; do
3518         case $flag in
3519             -Wno-switch)             echo -Wno-switch-enum ;;
3520             -Wno-format-zero-length) ;;
3521             -Wdisabled-optimization) ;;
3522             -Wno-pointer-sign)       echo -Wno-other ;;
3523             *)                       echo $flag ;;
3524         esac
3525     done
3526 }
3527
3528 msvc_common_flags(){
3529     for flag; do
3530         case $flag in
3531             # In addition to specifying certain flags under the compiler
3532             # specific filters, they must be specified here as well or else the
3533             # generic catch all at the bottom will print the original flag.
3534             -Wall)                ;;
3535             -std=c99)             ;;
3536             # Common flags
3537             -fomit-frame-pointer) ;;
3538             -g)                   echo -Z7 ;;
3539             -fno-math-errno)      ;;
3540             -fno-common)          ;;
3541             -fno-signed-zeros)    ;;
3542             -fPIC)                ;;
3543             -mthumb)              ;;
3544             -march=*)             ;;
3545             -lz)                  echo zlib.lib ;;
3546             -lavifil32)           echo vfw32.lib ;;
3547             -lavicap32)           echo vfw32.lib user32.lib ;;
3548             -l*)                  echo ${flag#-l}.lib ;;
3549             -LARGEADDRESSAWARE)   echo $flag ;;
3550             -L*)                  echo -libpath:${flag#-L} ;;
3551             *)                    echo $flag ;;
3552         esac
3553     done
3554 }
3555
3556 msvc_flags(){
3557     msvc_common_flags "$@"
3558     for flag; do
3559         case $flag in
3560             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3561                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3562                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3563                                        -wd4307 \
3564                                        -wd4273 -wd4554 -wd4701 ;;
3565         esac
3566     done
3567 }
3568
3569 icl_flags(){
3570     msvc_common_flags "$@"
3571     for flag; do
3572         case $flag in
3573             # Despite what Intel's documentation says -Wall, which is supported
3574             # on Windows, does enable remarks so disable them here.
3575             -Wall)                echo $flag -Qdiag-disable:remark ;;
3576             -std=c99)             echo -Qstd=c99 ;;
3577             -flto)                echo -ipo ;;
3578         esac
3579     done
3580 }
3581
3582 icc_flags(){
3583     for flag; do
3584         case $flag in
3585             -flto)                echo -ipo ;;
3586             *)                    echo $flag ;;
3587         esac
3588     done
3589 }
3590
3591 pgi_flags(){
3592     for flag; do
3593         case $flag in
3594             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3595             -fomit-frame-pointer) echo -Mnoframe ;;
3596             -g)                   echo -gopt ;;
3597             *)                    echo $flag ;;
3598         esac
3599     done
3600 }
3601
3602 suncc_flags(){
3603     for flag; do
3604         case $flag in
3605             -march=*|-mcpu=*)
3606                 case "${flag#*=}" in
3607                     native)                   echo -xtarget=native       ;;
3608                     v9|niagara)               echo -xarch=sparc          ;;
3609                     ultrasparc)               echo -xarch=sparcvis       ;;
3610                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3611                     i586|pentium)             echo -xchip=pentium        ;;
3612                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3613                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3614                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3615                     pentium4*)          echo -xtarget=pentium4           ;;
3616                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3617                     *-sse3)             echo -xarch=sse3                 ;;
3618                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3619                     bonnell)                   echo -xarch=ssse3         ;;
3620                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3621                     westmere)                  echo -xtarget=westmere    ;;
3622                     silvermont)                echo -xarch=sse4_2        ;;
3623                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3624                     core-avx*|ivybridge|haswell|broadwell)
3625                                                echo -xarch=avx           ;;
3626                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3627                     btver1)                    echo -xarch=amdsse4a      ;;
3628                     btver2|bdver*)             echo -xarch=avx           ;;
3629                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3630                     k8|opteron|athlon64|athlon-fx)
3631                                                echo -xarch=sse2a         ;;
3632                     athlon*)                   echo -xarch=pentium_proa  ;;
3633                 esac
3634                 ;;
3635             -std=c99)             echo -xc99              ;;
3636             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3637             -fPIC)                echo -KPIC -xcode=pic32 ;;
3638             -W*,*)                echo $flag              ;;
3639             -f*-*|-W*|-mimpure-text)                      ;;
3640             -shared)              echo -G                 ;;
3641             *)                    echo $flag              ;;
3642         esac
3643     done
3644 }
3645
3646 tms470_flags(){
3647     for flag; do
3648         case $flag in
3649             -march=*|-mcpu=*)
3650                 case "${flag#*=}" in
3651                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3652                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3653                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3654                     armv6*|arm11*)          echo -mv=6   ;;
3655                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3656                                             echo -mv=5e  ;;
3657                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3658                 esac
3659                 ;;
3660             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3661             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3662             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3663             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3664             -msoft-float)   echo --float_support=vfplib       ;;
3665             -O[0-3]|-mf=*)  echo $flag                        ;;
3666             -g)             echo -g -mn                       ;;
3667             -pds=*)         echo $flag                        ;;
3668             -D*|-I*)        echo $flag                        ;;
3669             --gcc|--abi=*)  echo $flag                        ;;
3670             -me)            echo $flag                        ;;
3671         esac
3672     done
3673 }
3674
3675 probe_cc(){
3676     pfx=$1
3677     _cc=$2
3678     first=$3
3679
3680     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3681     unset _ld_o _ldflags _ld_lib _ld_path
3682     unset _depflags _DEPCMD _DEPFLAGS
3683     _flags_filter=echo
3684
3685     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3686         true # no-op to avoid reading stdin in following checks
3687     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3688         _type=llvm_gcc
3689         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3690         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3691         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3692         _cflags_speed='-O3'
3693         _cflags_size='-Os'
3694     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3695         _type=gcc
3696         gcc_version=$($_cc --version | head -n1)
3697         gcc_basever=$($_cc -dumpversion)
3698         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3699         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3700         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3701         case $gcc_basever in
3702             2) ;;
3703             2.*) ;;
3704             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3705         esac
3706         if [ "$first" = true ]; then
3707             case $gcc_basever in
3708                 4.2*)
3709                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3710             esac
3711         fi
3712         _cflags_speed='-O3'
3713         _cflags_size='-Os'
3714     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3715         _type=icc
3716         _ident=$($_cc --version | head -n1)
3717         _depflags='-MMD'
3718         _cflags_speed='-O3'
3719         _cflags_size='-Os'
3720         _cflags_noopt='-O1'
3721         _flags_filter=icc_flags
3722     elif $_cc -v 2>&1 | grep -q xlc; then
3723         _type=xlc
3724         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3725         _cflags_speed='-O5'
3726         _cflags_size='-O5 -qcompact'
3727     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3728         _type=ccc
3729         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3730         _DEPFLAGS='-M'
3731         _cflags_speed='-fast'
3732         _cflags_size='-O1'
3733         _flags_filter=ccc_flags
3734     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3735         test -d "$sysroot" || die "No valid sysroot specified."
3736         _type=armcc
3737         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3738         armcc_conf="$PWD/armcc.conf"
3739         $_cc --arm_linux_configure                 \
3740              --arm_linux_config_file="$armcc_conf" \
3741              --configure_sysroot="$sysroot"        \
3742              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3743              die "Error creating armcc configuration file."
3744         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3745         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3746         as_default="${cross_prefix}gcc"
3747         _depflags='-MMD'
3748         _cflags_speed='-O3'
3749         _cflags_size='-Os'
3750     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3751         _type=tms470
3752         _ident=$($_cc -version | head -n1 | tr -s ' ')
3753         _flags='--gcc --abi=eabi -me'
3754         _cc_e='-ppl -fe=$@'
3755         _cc_o='-fe=$@'
3756         _depflags='-ppa -ppd=$(@:.o=.d)'
3757         _cflags_speed='-O3 -mf=5'
3758         _cflags_size='-O3 -mf=2'
3759         _flags_filter=tms470_flags
3760     elif $_cc -v 2>&1 | grep -q clang; then
3761         _type=clang
3762         _ident=$($_cc --version 2>/dev/null | head -n1)
3763         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3764         _cflags_speed='-O3'
3765         _cflags_size='-Os'
3766     elif $_cc -V 2>&1 | grep -q Sun; then
3767         _type=suncc
3768         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3769         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3770         _DEPFLAGS='-xM1 -xc99'
3771         _ldflags='-std=c99'
3772         _cflags_speed='-O5'
3773         _cflags_size='-O5 -xspace'
3774         _flags_filter=suncc_flags
3775     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3776         _type=pathscale
3777         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3778         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3779         _cflags_speed='-O2'
3780         _cflags_size='-Os'
3781         _flags_filter='filter_out -Wdisabled-optimization'
3782     elif $_cc -v 2>&1 | grep -q Open64; then
3783         _type=open64
3784         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3785         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3786         _cflags_speed='-O2'
3787         _cflags_size='-Os'
3788         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3789     elif $_cc -V 2>&1 | grep -q Portland; then
3790         _type=pgi
3791         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3792         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3793         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3794         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3795         _cflags_noopt="-O"
3796         _flags_filter=pgi_flags
3797     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3798         _type=armasm
3799         _ident=$($_cc | head -n1)
3800         # 4509: "This form of conditional instruction is deprecated"
3801         _flags="-nologo -ignore 4509"
3802         _flags_filter=armasm_flags
3803     elif $_cc 2>&1 | grep -q Intel; then
3804         _type=icl
3805         _ident=$($_cc 2>&1 | head -n1)
3806         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3807         # Not only is O3 broken on 13.x+ but it is slower on all previous
3808         # versions (tested) as well.
3809         _cflags_speed="-O2"
3810         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3811         if $_cc 2>&1 | grep -q Linker; then
3812             _ld_o='-out:$@'
3813         else
3814             _ld_o='-Fe$@'
3815         fi
3816         _cc_o='-Fo$@'
3817         _cc_e='-P'
3818         _flags_filter=icl_flags
3819         _ld_lib='lib%.a'
3820         _ld_path='-libpath:'
3821         # -Qdiag-error to make icl error when seeing certain unknown arguments
3822         _flags='-nologo -Qdiag-error:4044,10157'
3823         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3824         # with MSVC which enables it by default.
3825         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3826         disable stripping
3827     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3828         _type=msvc
3829         _ident=$($_cc 2>&1 | head -n1)
3830         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3831         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3832         _cflags_speed="-O2"
3833         _cflags_size="-O1"
3834         if $_cc -nologo- 2>&1 | grep -q Linker; then
3835             _ld_o='-out:$@'
3836         else
3837             _ld_o='-Fe$@'
3838         fi
3839         _cc_o='-Fo$@'
3840         _cc_e='-P -Fi$@'
3841         _flags_filter=msvc_flags
3842         _ld_lib='lib%.a'
3843         _ld_path='-libpath:'
3844         _flags='-nologo'
3845         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3846         disable stripping
3847     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3848         _type=cparser
3849         _ident=$($_cc --version | head -n1)
3850         _depflags='-MMD'
3851         _cflags_speed='-O4'
3852         _cflags_size='-O2'
3853         _flags_filter=cparser_flags
3854     fi
3855
3856     eval ${pfx}_type=\$_type
3857     eval ${pfx}_ident=\$_ident
3858 }
3859
3860 set_ccvars(){
3861     eval ${1}_C=\${_cc_c-\${${1}_C}}
3862     eval ${1}_E=\${_cc_e-\${${1}_E}}
3863     eval ${1}_O=\${_cc_o-\${${1}_O}}
3864
3865     if [ -n "$_depflags" ]; then
3866         eval ${1}_DEPFLAGS=\$_depflags
3867     else
3868         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3869         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3870         eval DEP${1}FLAGS=\$_flags
3871     fi
3872 }
3873
3874 probe_cc cc "$cc" "true"
3875 cflags_filter=$_flags_filter
3876 cflags_speed=$_cflags_speed
3877 cflags_size=$_cflags_size
3878 cflags_noopt=$_cflags_noopt
3879 add_cflags $_flags $_cflags
3880 cc_ldflags=$_ldflags
3881 set_ccvars CC
3882
3883 probe_cc hostcc "$host_cc"
3884 host_cflags_filter=$_flags_filter
3885 add_host_cflags  $_flags $_cflags
3886 set_ccvars HOSTCC
3887
3888 test -n "$cc_type" && enable $cc_type ||
3889     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3890
3891 : ${as_default:=$cc}
3892 : ${objcc_default:=$cc}
3893 : ${dep_cc_default:=$cc}
3894 : ${ld_default:=$cc}
3895 : ${host_ld_default:=$host_cc}
3896 set_default ar as objcc dep_cc ld host_ld windres
3897
3898 probe_cc as "$as"
3899 asflags_filter=$_flags_filter
3900 add_asflags $_flags $_cflags
3901 set_ccvars AS
3902
3903 probe_cc objcc "$objcc"
3904 objcflags_filter=$_flags_filter
3905 add_objcflags $_flags $_cflags
3906 set_ccvars OBJC
3907
3908 probe_cc ld "$ld"
3909 ldflags_filter=$_flags_filter
3910 add_ldflags $_flags $_ldflags
3911 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3912 LD_O=${_ld_o-$LD_O}
3913 LD_LIB=${_ld_lib-$LD_LIB}
3914 LD_PATH=${_ld_path-$LD_PATH}
3915
3916 probe_cc hostld "$host_ld"
3917 host_ldflags_filter=$_flags_filter
3918 add_host_ldflags $_flags $_ldflags
3919 HOSTLD_O=${_ld_o-$HOSTLD_O}
3920
3921 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3922     probe_cc depcc "$dep_cc"
3923     CCDEP=${_DEPCMD:-$DEPCMD}
3924     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3925     DEPCCFLAGS=$_flags
3926 fi
3927
3928 if $ar 2>&1 | grep -q Microsoft; then
3929     arflags="-nologo"
3930     ar_o='-out:$@'
3931 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3932     arflags="rq"
3933     ar_o='$@'
3934 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3935     arflags='-Xany -r -c'
3936     ar_o='$@'
3937 elif $ar 2>&1 | grep -q "\[D\] "; then
3938     arflags="rcD"
3939     ar_o='$@'
3940 else
3941     arflags="rc"
3942     ar_o='$@'
3943 fi
3944
3945 add_cflags $extra_cflags
3946 add_cxxflags $extra_cxxflags
3947 add_objcflags $extra_objcflags
3948 add_asflags $extra_cflags
3949
3950 if test -n "$sysroot"; then
3951     case "$cc_type" in
3952         gcc|llvm_gcc|clang)
3953             add_cppflags --sysroot="$sysroot"
3954             add_ldflags --sysroot="$sysroot"
3955 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3956             add_cppflags -isysroot "$sysroot"
3957             add_ldflags -isysroot "$sysroot"
3958         ;;
3959         tms470)
3960             add_cppflags -I"$sysinclude"
3961             add_ldflags  --sysroot="$sysroot"
3962         ;;
3963     esac
3964 fi
3965
3966 if test "$cpu" = host; then
3967     enabled cross_compile &&
3968         die "--cpu=host makes no sense when cross-compiling."
3969
3970     case "$cc_type" in
3971         gcc|llvm_gcc)
3972             check_native(){
3973                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3974                 sed -n "/cc1.*$1=/{
3975                             s/.*$1=\\([^ ]*\\).*/\\1/
3976                             p
3977                             q
3978                         }" $TMPE
3979             }
3980             cpu=$(check_native -march || check_native -mcpu)
3981         ;;
3982         clang)
3983             check_native(){
3984                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3985                 sed -n "/cc1.*-target-cpu /{
3986                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
3987                             p
3988                             q
3989                         }" $TMPE
3990             }
3991             cpu=$(check_native -march)
3992         ;;
3993     esac
3994
3995     test "${cpu:-host}" = host &&
3996         die "--cpu=host not supported with compiler $cc"
3997 fi
3998
3999 # Deal with common $arch aliases
4000 case "$arch" in
4001     aarch64|arm64)
4002         arch="aarch64"
4003     ;;
4004     arm*|iPad*|iPhone*)
4005         arch="arm"
4006     ;;
4007     mips*|IP*)
4008         arch="mips"
4009     ;;
4010     parisc*|hppa*)
4011         arch="parisc"
4012     ;;
4013     "Power Macintosh"|ppc*|powerpc*)
4014         arch="ppc"
4015     ;;
4016     s390|s390x)
4017         arch="s390"
4018     ;;
4019     sh4|sh)
4020         arch="sh4"
4021     ;;
4022     sun4u|sparc*)
4023         arch="sparc"
4024     ;;
4025     tilegx|tile-gx)
4026         arch="tilegx"
4027     ;;
4028     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4029         arch="x86"
4030     ;;
4031 esac
4032
4033 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4034 enable $arch
4035
4036 # Add processor-specific flags
4037 if enabled aarch64; then
4038
4039     case $cpu in
4040         armv*)
4041             cpuflags="-march=$cpu"
4042         ;;
4043         *)
4044             cpuflags="-mcpu=$cpu"
4045         ;;
4046     esac
4047
4048 elif enabled alpha; then
4049
4050     cpuflags="-mcpu=$cpu"
4051
4052 elif enabled arm; then
4053
4054     check_arm_arch() {
4055         check_cpp_condition stddef.h \
4056             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4057             $cpuflags
4058     }
4059
4060     probe_arm_arch() {
4061         if   check_arm_arch 4;        then echo armv4;
4062         elif check_arm_arch 4T;       then echo armv4t;
4063         elif check_arm_arch 5;        then echo armv5;
4064         elif check_arm_arch 5E;       then echo armv5e;
4065         elif check_arm_arch 5T;       then echo armv5t;
4066         elif check_arm_arch 5TE;      then echo armv5te;
4067         elif check_arm_arch 5TEJ;     then echo armv5te;
4068         elif check_arm_arch 6;        then echo armv6;
4069         elif check_arm_arch 6J;       then echo armv6j;
4070         elif check_arm_arch 6K;       then echo armv6k;
4071         elif check_arm_arch 6Z;       then echo armv6z;
4072         elif check_arm_arch 6ZK;      then echo armv6zk;
4073         elif check_arm_arch 6T2;      then echo armv6t2;
4074         elif check_arm_arch 7;        then echo armv7;
4075         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4076         elif check_arm_arch 7S;       then echo armv7-a;
4077         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4078         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4079         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4080         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4081         fi
4082     }
4083
4084     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4085
4086     case $cpu in
4087         armv*)
4088             cpuflags="-march=$cpu"
4089             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4090         ;;
4091         *)
4092             cpuflags="-mcpu=$cpu"
4093             case $cpu in
4094                 cortex-a*)                               subarch=armv7a  ;;
4095                 cortex-r*)                               subarch=armv7r  ;;
4096                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4097                 arm11*)                                  subarch=armv6   ;;
4098                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4099                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4100                 *)                             subarch=$(probe_arm_arch) ;;
4101             esac
4102         ;;
4103     esac
4104
4105     case "$subarch" in
4106         armv5t*)    enable fast_clz                ;;
4107         armv[6-8]*)
4108             enable fast_clz
4109             disabled fast_unaligned || enable fast_unaligned
4110             ;;
4111     esac
4112
4113 elif enabled avr32; then
4114
4115     case $cpu in
4116         ap7[02]0[0-2])
4117             subarch="avr32_ap"
4118             cpuflags="-mpart=$cpu"
4119         ;;
4120         ap)
4121             subarch="avr32_ap"
4122             cpuflags="-march=$cpu"
4123         ;;
4124         uc3[ab]*)
4125             subarch="avr32_uc"
4126             cpuflags="-mcpu=$cpu"
4127         ;;
4128         uc)
4129             subarch="avr32_uc"
4130             cpuflags="-march=$cpu"
4131         ;;
4132     esac
4133
4134 elif enabled bfin; then
4135
4136     cpuflags="-mcpu=$cpu"
4137
4138 elif enabled mips; then
4139
4140     cpuflags="-march=$cpu"
4141
4142     case $cpu in
4143         24kc)
4144             disable mips32r6
4145             disable mips64r2
4146             disable mips64r6
4147             disable mipsfpu
4148             disable mipsdsp
4149             disable mipsdspr2
4150             disable msa
4151         ;;
4152         24kf*)
4153             disable mips32r6
4154             disable mips64r2
4155             disable mips64r6
4156             disable mipsdsp
4157             disable mipsdspr2
4158             disable msa
4159         ;;
4160         24kec|34kc|1004kc)
4161             disable mips32r6
4162             disable mips64r2
4163             disable mips64r6
4164             disable mipsfpu
4165             disable mipsdspr2
4166             disable msa
4167         ;;
4168         24kef*|34kf*|1004kf*)
4169             disable mips32r6
4170             disable mips64r2
4171             disable mips64r6
4172             disable mipsdspr2
4173             disable msa
4174         ;;
4175         74kc)
4176             disable mips32r6
4177             disable mips64r2
4178             disable mips64r6
4179             disable mipsfpu
4180             disable msa
4181         ;;
4182         74kf)
4183             disable mips32r6
4184             disable mips64r2
4185             disable mips64r6
4186             disable msa
4187         ;;
4188         p5600)
4189             disable mips32r6
4190             disable mips64r2
4191             disable mips64r6
4192             disable mipsdsp
4193             disable mipsdspr2
4194             check_cflags "-mtune=p5600" &&
4195             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4196             add_asflags "-mfp64"
4197         ;;
4198         i6400)
4199             disable mips32r2
4200             disable mips32r6
4201             disable mips64r2
4202             disable mipsdsp
4203             disable mipsdspr2
4204             check_cflags "-mtune=i6400 -mabi=64" &&
4205             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4206             check_ldflags "-mabi=64" &&
4207             add_asflags "-mfp64"
4208         ;;
4209         loongson*)
4210             disable mips32r2
4211             disable mips32r6
4212             disable mips64r2
4213             disable mips64r6
4214             disable mipsfpu
4215             disable mipsdsp
4216             disable mipsdspr2
4217             disable msa
4218             enable local_aligned_8 local_aligned_16 local_aligned_32
4219             enable simd_align_16
4220             enable fast_64bit
4221             enable fast_clz
4222             enable fast_cmov
4223             enable fast_unaligned
4224             disable aligned_stack
4225             case $cpu in
4226                 loongson3*)
4227                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4228                 ;;
4229                 loongson2e)
4230                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4231                 ;;
4232                 loongson2f)
4233                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4234                 ;;
4235             esac
4236         ;;
4237         generic)
4238             disable mips64r6
4239             disable msa
4240         ;;
4241         *)
4242             # Unknown CPU. Disable everything.
4243             warn "unknown CPU. Disabling all MIPS optimizations."
4244             disable mipsfpu
4245             disable mips32r2
4246             disable mips32r6
4247             disable mips64r2
4248             disable mips64r6
4249             disable mipsdsp
4250             disable mipsdspr2
4251             disable msa
4252         ;;
4253     esac
4254
4255 elif enabled ppc; then
4256
4257     disable ldbrx
4258
4259     case $(tolower $cpu) in
4260         601|ppc601|powerpc601)
4261             cpuflags="-mcpu=601"
4262             disable altivec
4263         ;;
4264         603*|ppc603*|powerpc603*)
4265             cpuflags="-mcpu=603"
4266             disable altivec
4267         ;;
4268         604*|ppc604*|powerpc604*)
4269             cpuflags="-mcpu=604"
4270             disable altivec
4271         ;;
4272         g3|75*|ppc75*|powerpc75*)
4273             cpuflags="-mcpu=750"
4274             disable altivec
4275         ;;
4276         g4|745*|ppc745*|powerpc745*)
4277             cpuflags="-mcpu=7450"
4278             disable vsx
4279         ;;
4280         74*|ppc74*|powerpc74*)
4281             cpuflags="-mcpu=7400"
4282             disable vsx
4283         ;;
4284         g5|970|ppc970|powerpc970)
4285             cpuflags="-mcpu=970"
4286             disable vsx
4287         ;;
4288         power[3-6]*)
4289             cpuflags="-mcpu=$cpu"
4290             disable vsx
4291         ;;
4292         power[7-8]*)
4293             cpuflags="-mcpu=$cpu"
4294         ;;
4295         cell)
4296             cpuflags="-mcpu=cell"
4297             enable ldbrx
4298             disable vsx
4299         ;;
4300         e500mc)
4301             cpuflags="-mcpu=e500mc"
4302             disable altivec
4303         ;;
4304         e500v2)
4305             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4306             disable altivec
4307             disable dcbzl
4308         ;;
4309         e500)
4310             cpuflags="-mcpu=8540 -mhard-float"
4311             disable altivec
4312             disable dcbzl
4313         ;;
4314     esac
4315
4316 elif enabled sparc; then
4317
4318     case $cpu in
4319         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4320             cpuflags="-mcpu=$cpu"
4321         ;;
4322         ultrasparc*|niagara[234])
4323             cpuflags="-mcpu=$cpu"
4324         ;;
4325     esac
4326
4327 elif enabled x86; then
4328
4329     case $cpu in
4330         i[345]86|pentium)
4331             cpuflags="-march=$cpu"
4332             disable i686
4333             disable mmx
4334         ;;
4335         # targets that do NOT support nopl and conditional mov (cmov)
4336         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4337             cpuflags="-march=$cpu"
4338             disable i686
4339         ;;
4340         # targets that do support nopl and conditional mov (cmov)
4341         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4342         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4343             cpuflags="-march=$cpu"
4344             enable i686
4345             enable fast_cmov
4346         ;;
4347         # targets that do support conditional mov but on which it's slow
4348         pentium4|pentium4m|prescott|nocona)
4349             cpuflags="-march=$cpu"
4350             enable i686
4351             disable fast_cmov
4352         ;;
4353     esac
4354
4355 fi
4356
4357 if [ "$cpu" != generic ]; then
4358     add_cflags  $cpuflags
4359     add_asflags $cpuflags
4360     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4361 fi
4362
4363 # compiler sanity check
4364 check_exec <<EOF
4365 int main(void){ return 0; }
4366 EOF
4367 if test "$?" != 0; then
4368     echo "$cc is unable to create an executable file."
4369     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4370         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4371         echo "Only do this if you know what cross compiling means."
4372     fi
4373     die "C compiler test failed."
4374 fi
4375
4376 add_cppflags -D_ISOC99_SOURCE
4377 add_cxxflags -D__STDC_CONSTANT_MACROS
4378 check_cflags -std=c99
4379 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4380 #include <stdlib.h>
4381 EOF
4382 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4383 #include <stdlib.h>
4384 EOF
4385
4386 add_host_cppflags -D_ISOC99_SOURCE
4387 check_host_cflags -std=c99
4388 check_host_cflags -Wall
4389 check_host_cflags -O3
4390
4391 check_64bit(){
4392     arch32=$1
4393     arch64=$2
4394     expr=$3
4395     check_code cc "" "int test[2*($expr) - 1]" &&
4396         subarch=$arch64 || subarch=$arch32
4397 }
4398
4399 case "$arch" in
4400     aarch64|alpha|ia64)
4401         spic=$shared
4402     ;;
4403     mips)
4404         check_64bit mips mips64 '_MIPS_SIM > 1'
4405         spic=$shared
4406     ;;
4407     parisc)
4408         check_64bit parisc parisc64 'sizeof(void *) > 4'
4409         spic=$shared
4410     ;;
4411     ppc)
4412         check_64bit ppc ppc64 'sizeof(void *) > 4'
4413         spic=$shared
4414     ;;
4415     s390)
4416         check_64bit s390 s390x 'sizeof(void *) > 4'
4417         spic=$shared
4418     ;;
4419     sparc)
4420         check_64bit sparc sparc64 'sizeof(void *) > 4'
4421         spic=$shared
4422     ;;
4423     x86)
4424         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4425         # Treat x32 as x64 for now. Note it also needs spic=$shared
4426         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4427             subarch=x86_64
4428         if test "$subarch" = "x86_64"; then
4429             spic=$shared
4430         fi
4431     ;;
4432     ppc)
4433         check_cc <<EOF && subarch="ppc64"
4434         int test[(int)sizeof(char*) - 7];
4435 EOF
4436     ;;
4437 esac
4438
4439 enable $subarch
4440 enabled spic && enable_weak pic
4441
4442 # OS specific
4443 case $target_os in
4444     aix)
4445         SHFLAGS=-shared
4446         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4447         enabled shared && add_ldflags -Wl,-brtl
4448         ;;
4449     android)
4450         disable symver
4451         enable section_data_rel_ro
4452         SLIB_INSTALL_NAME='$(SLIBNAME)'
4453         SLIB_INSTALL_LINKS=
4454         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4455         ;;
4456     haiku)
4457         prefix_default="/boot/common"
4458         network_extralibs="-lnetwork"
4459         host_libs=
4460         ;;
4461     sunos)
4462         SHFLAGS='-shared -Wl,-h,$$(@F)'
4463         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4464         network_extralibs="-lsocket -lnsl"
4465         add_cppflags -D__EXTENSIONS__
4466         # When using suncc to build, the Solaris linker will mark
4467         # an executable with each instruction set encountered by
4468         # the Solaris assembler.  As our libraries contain their own
4469         # guards for processor-specific code, instead suppress
4470         # generation of the HWCAPS ELF section on Solaris x86 only.
4471         enabled_all suncc x86 &&
4472             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4473             add_ldflags -Wl,-M,mapfile
4474         nm_default='nm -P -g'
4475         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4476         ;;
4477     netbsd)
4478         disable symver
4479         oss_indev_extralibs="-lossaudio"
4480         oss_outdev_extralibs="-lossaudio"
4481         enabled gcc || check_ldflags -Wl,-zmuldefs
4482         ;;
4483     openbsd|bitrig)
4484         disable symver
4485         SHFLAGS='-shared'
4486         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4487         SLIB_INSTALL_LINKS=
4488         oss_indev_extralibs="-lossaudio"
4489         oss_outdev_extralibs="-lossaudio"
4490         ;;
4491     dragonfly)
4492         disable symver
4493         ;;
4494     freebsd)
4495         ;;
4496     bsd/os)
4497         add_extralibs -lpoll -lgnugetopt
4498         strip="strip -d"
4499         ;;
4500     darwin)
4501         enabled ppc && add_asflags -force_cpusubtype_ALL
4502         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4503         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4504         strip="${strip} -x"
4505         add_ldflags -Wl,-dynamic,-search_paths_first
4506         SLIBSUF=".dylib"
4507         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4508         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4509         objformat="macho"
4510         enabled x86_64 && objformat="macho64"
4511         enabled_any pic shared x86_64 ||
4512             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4513         ;;
4514     msys*)
4515         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4516         ;;
4517     mingw32*|mingw64*)
4518         if test $target_os = "mingw32ce"; then
4519             disable network
4520         else
4521             target_os=mingw32
4522         fi
4523         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4524         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4525         LIBTARGET=i386
4526         if enabled x86_64; then
4527             LIBTARGET="i386:x86-64"
4528         elif enabled arm; then
4529             LIBTARGET=arm-wince
4530         fi
4531         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4532         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4533         shlibdir_default="$bindir_default"
4534         SLIBPREF=""
4535         SLIBSUF=".dll"
4536         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4537         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4538         dlltool="${cross_prefix}dlltool"
4539         if check_cmd lib.exe -list; then
4540             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4541             if enabled x86_64; then
4542                 LIBTARGET=x64
4543             fi
4544         elif check_cmd $dlltool --version; then
4545             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4546         fi
4547         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4548         SLIB_INSTALL_LINKS=
4549         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4550         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4551         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4552         objformat="win32"
4553         ranlib=:
4554         enable dos_paths
4555         check_ldflags -Wl,--nxcompat,--dynamicbase
4556         # Lets work around some stupidity in binutils.
4557         # ld will strip relocations from executables even though we need them
4558         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4559         # however ld then forgets what the entry point should be (oops) so we
4560         # have to manually (re)set it.
4561         if enabled x86_32; then
4562             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4563         elif enabled x86_64; then
4564             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4565             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4566             # Set image base >4GB for extra entropy with HEASLR
4567             add_ldexeflags -Wl,--image-base,0x140000000
4568             append SHFLAGS -Wl,--image-base,0x180000000
4569         fi
4570         ;;
4571     win32|win64)
4572         disable symver
4573         if enabled shared; then
4574             # Link to the import library instead of the normal static library
4575             # for shared libs.
4576             LD_LIB='%.lib'
4577             # Cannot build both shared and static libs with MSVC or icl.
4578             disable static
4579         fi
4580         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4581         shlibdir_default="$bindir_default"
4582         SLIBPREF=""
4583         SLIBSUF=".dll"
4584         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4585         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4586         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4587         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4588         SLIB_INSTALL_LINKS=
4589         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4590         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4591         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4592         objformat="win32"
4593         ranlib=:
4594         enable dos_paths
4595         ;;
4596     cygwin*)
4597         target_os=cygwin
4598         shlibdir_default="$bindir_default"
4599         SLIBPREF="cyg"
4600         SLIBSUF=".dll"
4601         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4602         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4603         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4604         SLIB_INSTALL_LINKS=
4605         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4606         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4607         objformat="win32"
4608         enable dos_paths
4609         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4610         ;;
4611     *-dos|freedos|opendos)
4612         network_extralibs="-lsocket"
4613         objformat="coff"
4614         enable dos_paths
4615         add_cppflags -U__STRICT_ANSI__
4616         ;;
4617     linux)
4618         enable dv1394
4619         enable section_data_rel_ro
4620         ;;
4621     irix*)
4622         target_os=irix
4623         ranlib="echo ignoring ranlib"
4624         ;;
4625     os/2*)
4626         strip="lxlite -CS"
4627         ln_s="cp -f"
4628         objformat="aout"
4629         add_cppflags -D_GNU_SOURCE
4630         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4631         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4632         LIBSUF="_s.a"
4633         SLIBPREF=""
4634         SLIBSUF=".dll"
4635         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4636         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4637         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4638             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4639             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4640             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4641             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4642         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4643             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4644         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4645         enable dos_paths
4646         enable_weak os2threads
4647         ;;
4648     gnu/kfreebsd)
4649         add_cppflags -D_BSD_SOURCE
4650         ;;
4651     gnu)
4652         ;;
4653     qnx)
4654         add_cppflags -D_QNX_SOURCE
4655         network_extralibs="-lsocket"
4656         ;;
4657     symbian)
4658         SLIBSUF=".dll"
4659         enable dos_paths
4660         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4661         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4662         add_ldflags -Wl,--target1-abs,--no-undefined \
4663                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4664                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4665         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4666                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4667                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4668         ;;
4669     osf1)
4670         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4671         ;;
4672     minix)
4673         ;;
4674     plan9)
4675         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4676                      -D_REENTRANT_SOURCE        \
4677                      -D_RESEARCH_SOURCE         \
4678                      -DFD_SETSIZE=96            \
4679                      -DHAVE_SOCK_OPTS
4680         add_compat strtod.o strtod=avpriv_strtod
4681         network_extralibs='-lbsd'
4682         exeobjs=compat/plan9/main.o
4683         disable ffserver
4684         cp_f='cp'
4685         ;;
4686     none)
4687         ;;
4688     *)
4689         die "Unknown OS '$target_os'."
4690         ;;
4691 esac
4692
4693 # determine libc flavour
4694
4695 probe_libc(){
4696     pfx=$1
4697     pfx_no_=${pfx%_}
4698     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4699     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4700         eval ${pfx}libc_type=uclibc
4701         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4702     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4703         eval ${pfx}libc_type=glibc
4704         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4705     # MinGW headers can be installed on Cygwin, so check for newlib first.
4706     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4707         eval ${pfx}libc_type=newlib
4708         add_${pfx}cppflags -U__STRICT_ANSI__
4709     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4710     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4711         eval ${pfx}libc_type=mingw64
4712         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4713             add_compat msvcrt/snprintf.o
4714             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4715         fi
4716         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4717         eval test \$${pfx_no_}cc_type = "gcc" &&
4718             add_${pfx}cppflags -D__printf__=__gnu_printf__
4719     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4720          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4721         eval ${pfx}libc_type=mingw32
4722         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4723             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4724             die "ERROR: MinGW32 runtime version must be >= 3.15."
4725         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4726         eval test \$${pfx_no_}cc_type = "gcc" &&
4727             add_${pfx}cppflags -D__printf__=__gnu_printf__
4728     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4729         eval ${pfx}libc_type=msvcrt
4730         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4731             if [ "$pfx" = host_ ]; then
4732                 add_host_cppflags -Dsnprintf=_snprintf
4733             else
4734                 add_compat strtod.o strtod=avpriv_strtod
4735                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4736                                              _snprintf=avpriv_snprintf  \
4737                                              vsnprintf=avpriv_vsnprintf
4738             fi
4739         fi
4740         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4741         # 0x601 by default unless something else is set by the user.
4742         # This can easily lead to us detecting functions only present
4743         # in such new versions and producing binaries requiring windows 7.0.
4744         # Therefore explicitly set the default to XP unless the user has
4745         # set something else on the command line.
4746         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4747         # family. For these cases, configure is free to use any functions
4748         # found in the SDK headers by default. (Alternatively, we could force
4749         # _WIN32_WINNT to 0x0602 in that case.)
4750         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4751             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4752 #ifdef WINAPI_FAMILY
4753 #include <winapifamily.h>
4754 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4755 #error not desktop
4756 #endif
4757 #endif
4758 EOF
4759     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4760         eval ${pfx}libc_type=klibc
4761     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4762         eval ${pfx}libc_type=bionic
4763     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4764         eval ${pfx}libc_type=solaris
4765         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4766     fi
4767     check_${pfx}cc <<EOF
4768 #include <time.h>
4769 void *v = localtime_r;
4770 EOF
4771 test "$?" != 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
4772 #include <time.h>
4773 void *v = localtime_r;
4774 EOF
4775
4776 }
4777
4778 probe_libc
4779 test -n "$libc_type" && enable libc_$libc_type
4780 probe_libc host_
4781 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4782
4783 case $libc_type in
4784     bionic)
4785         add_compat strtod.o strtod=avpriv_strtod
4786         ;;
4787 esac
4788
4789 # hacks for compiler/libc/os combinations
4790
4791 if enabled_all tms470 libc_glibc; then
4792     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4793     add_cppflags -D__USER_LABEL_PREFIX__=
4794     add_cppflags -D__builtin_memset=memset
4795     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4796     add_cflags   -pds=48    # incompatible redefinition of macro
4797 fi
4798
4799 if enabled_all ccc libc_glibc; then
4800     add_ldflags -Wl,-z,now  # calls to libots crash without this
4801 fi
4802
4803 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4804     add_cppflags '-I\$(SRC_PATH)/compat/float'
4805
4806 esc(){
4807     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4808 }
4809
4810 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4811
4812 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4813
4814 set_default libdir
4815 : ${shlibdir_default:="$libdir"}
4816 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4817
4818 set_default $PATHS_LIST
4819 set_default nm
4820
4821 # we need to build at least one lib type
4822 if ! enabled_any static shared; then
4823     cat <<EOF
4824 At least one library type must be built.
4825 Specify --enable-static to build the static libraries or --enable-shared to
4826 build the shared libraries as well. To only build the shared libraries specify
4827 --disable-static in addition to --enable-shared.
4828 EOF
4829     exit 1;
4830 fi
4831
4832 die_license_disabled() {
4833     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4834 }
4835
4836 die_license_disabled_gpl() {
4837     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4838 }
4839
4840 die_license_disabled gpl frei0r
4841 die_license_disabled gpl libcdio
4842 die_license_disabled gpl librubberband
4843 die_license_disabled gpl libsmbclient
4844 die_license_disabled gpl libutvideo
4845 die_license_disabled gpl libvidstab
4846 die_license_disabled gpl libx264
4847 die_license_disabled gpl libx265
4848 die_license_disabled gpl libxavs
4849 die_license_disabled gpl libxvid
4850 die_license_disabled gpl libzvbi
4851 die_license_disabled gpl x11grab
4852
4853 die_license_disabled nonfree libaacplus
4854 die_license_disabled nonfree libfaac
4855 die_license_disabled nonfree nvenc
4856 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4857 enabled gpl && die_license_disabled_gpl nonfree openssl
4858
4859 die_license_disabled version3 gmp
4860 die_license_disabled version3 libopencore_amrnb
4861 die_license_disabled version3 libopencore_amrwb
4862 die_license_disabled version3 libsmbclient
4863 die_license_disabled version3 libvo_aacenc
4864 die_license_disabled version3 libvo_amrwbenc
4865
4866 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4867
4868 disabled optimizations || check_cflags -fomit-frame-pointer
4869
4870 enable_weak_pic() {
4871     disabled pic && return
4872     enable pic
4873     add_cppflags -DPIC
4874     case "$target_os"&nb