vaapi_hevc: Convert to use the new VAAPI hwaccel code
[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   --install-name-dir=DIR   Darwin directory name for installed targets
95
96 Licensing options:
97   --enable-gpl             allow use of GPL code, the resulting libs
98                            and binaries will be under GPL [no]
99   --enable-version3        upgrade (L)GPL to version 3 [no]
100   --enable-nonfree         allow use of nonfree code, the resulting libs
101                            and binaries will be unredistributable [no]
102
103 Configuration options:
104   --disable-static         do not build static libraries [no]
105   --enable-shared          build shared libraries [no]
106   --enable-small           optimize for size instead of speed
107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
108   --enable-gray            enable full grayscale support (slower color)
109   --disable-swscale-alpha  disable alpha channel support in swscale
110   --disable-all            disable building components, libraries and programs
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 Individual component options:
152   --disable-everything     disable all components listed below
153   --disable-encoder=NAME   disable encoder NAME
154   --enable-encoder=NAME    enable encoder NAME
155   --disable-encoders       disable all encoders
156   --disable-decoder=NAME   disable decoder NAME
157   --enable-decoder=NAME    enable decoder NAME
158   --disable-decoders       disable all decoders
159   --disable-hwaccel=NAME   disable hwaccel NAME
160   --enable-hwaccel=NAME    enable hwaccel NAME
161   --disable-hwaccels       disable all hwaccels
162   --disable-muxer=NAME     disable muxer NAME
163   --enable-muxer=NAME      enable muxer NAME
164   --disable-muxers         disable all muxers
165   --disable-demuxer=NAME   disable demuxer NAME
166   --enable-demuxer=NAME    enable demuxer NAME
167   --disable-demuxers       disable all demuxers
168   --enable-parser=NAME     enable parser NAME
169   --disable-parser=NAME    disable parser NAME
170   --disable-parsers        disable all parsers
171   --enable-bsf=NAME        enable bitstream filter NAME
172   --disable-bsf=NAME       disable bitstream filter NAME
173   --disable-bsfs           disable all bitstream filters
174   --enable-protocol=NAME   enable protocol NAME
175   --disable-protocol=NAME  disable protocol NAME
176   --disable-protocols      disable all protocols
177   --enable-indev=NAME      enable input device NAME
178   --disable-indev=NAME     disable input device NAME
179   --disable-indevs         disable input devices
180   --enable-outdev=NAME     enable output device NAME
181   --disable-outdev=NAME    disable output device NAME
182   --disable-outdevs        disable output devices
183   --disable-devices        disable all devices
184   --enable-filter=NAME     enable filter NAME
185   --disable-filter=NAME    disable filter NAME
186   --disable-filters        disable all filters
187
188 External library support:
189
190   Using any of the following switches will allow FFmpeg to link to the
191   corresponding external library. All the components depending on that library
192   will become enabled, if all their other dependencies are met and they are not
193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
194   libwavpack and allow the libwavpack encoder to be built, unless it is
195   specifically disabled with --disable-encoder=libwavpack.
196
197   Note that only the system libraries are auto-detected. All the other external
198   libraries must be explicitly enabled.
199
200   Also note that the following help text describes the purpose of the libraries
201   themselves, not all their features will necessarily be usable by FFmpeg.
202
203   --enable-avisynth        enable reading of AviSynth script files [no]
204   --disable-bzlib          disable bzlib [autodetect]
205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
206   --enable-frei0r          enable frei0r video filtering [no]
207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
208                            if openssl, librtmp or gmp is not used [no]
209   --enable-gmp             enable gmp, needed for rtmp(t)e support
210                            if openssl or librtmp is not used [no]
211   --enable-gnutls          enable gnutls, needed for https support
212                            if openssl is not used [no]
213   --disable-iconv          disable iconv [autodetect]
214   --enable-jni             enable JNI support [no]
215   --enable-ladspa          enable LADSPA audio filtering [no]
216   --enable-libass          enable libass subtitles rendering,
217                            needed for subtitles and ass filter [no]
218   --enable-libbluray       enable BluRay reading using libbluray [no]
219   --enable-libbs2b         enable bs2b DSP library [no]
220   --enable-libcaca         enable textual display using libcaca [no]
221   --enable-libcelt         enable CELT decoding via libcelt [no]
222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
224                            and libraw1394 [no]
225   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
226   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
227   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
228   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
229   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
230   --enable-libgme          enable Game Music Emu via libgme [no]
231   --enable-libgsm          enable GSM de/encoding via libgsm [no]
232   --enable-libiec61883     enable iec61883 via libiec61883 [no]
233   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
234   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
235   --enable-libmodplug      enable ModPlug via libmodplug [no]
236   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
237   --enable-libnut          enable NUT (de)muxing via libnut,
238                            native (de)muxer exists [no]
239   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
240   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
241   --enable-libopencv       enable video filtering via libopencv [no]
242   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
243   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
244   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
245   --enable-libopus         enable Opus de/encoding via libopus [no]
246   --enable-libpulse        enable Pulseaudio input via libpulse [no]
247   --enable-librubberband   enable rubberband needed for rubberband filter [no]
248   --enable-librtmp         enable RTMP[E] support via librtmp [no]
249   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
250   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
251   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
252   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
253   --enable-libsoxr         enable Include libsoxr resampling [no]
254   --enable-libspeex        enable Speex de/encoding via libspeex [no]
255   --enable-libssh          enable SFTP protocol via libssh [no]
256   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
257   --enable-libtheora       enable Theora encoding via libtheora [no]
258   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
259   --enable-libv4l2         enable libv4l2/v4l-utils [no]
260   --enable-libvidstab      enable video stabilization using vid.stab [no]
261   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
262   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
263                            native implementation exists [no]
264   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
265   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
266   --enable-libwebp         enable WebP encoding via libwebp [no]
267   --enable-libx264         enable H.264 encoding via x264 [no]
268   --enable-libx265         enable HEVC encoding via x265 [no]
269   --enable-libxavs         enable AVS encoding via xavs [no]
270   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
271   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
272   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
273   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
274   --enable-libxvid         enable Xvid encoding via xvidcore,
275                            native MPEG-4/Xvid encoder exists [no]
276   --enable-libzimg         enable z.lib, needed for zscale filter [no]
277   --enable-libzmq          enable message passing via libzmq [no]
278   --enable-libzvbi         enable teletext support via libzvbi [no]
279   --disable-lzma           disable lzma [autodetect]
280   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
281   --enable-mediacodec      enable Android MediaCodec support [no]
282   --enable-netcdf          enable NetCDF, needed for sofalizer filter [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-sdl2           disable sdl2 [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   The following libraries provide various hardware acceleration features:
298   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
299   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
300   --disable-cuvid          disable Nvidia CUVID support [autodetect]
301   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
302   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
303   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
304   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
305   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
306   --disable-nvenc          disable Nvidia video encoding code [autodetect]
307   --enable-omx             enable OpenMAX IL code [no]
308   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
309   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
310   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
311   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
312   --disable-videotoolbox   disable VideoToolbox code [autodetect]
313
314 Toolchain options:
315   --arch=ARCH              select architecture [$arch]
316   --cpu=CPU                select the minimum required CPU (affects
317                            instruction selection, may crash on older CPUs)
318   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
319   --progs-suffix=SUFFIX    program name suffix []
320   --enable-cross-compile   assume a cross-compiler is used
321   --sysroot=PATH           root of cross-build tree
322   --sysinclude=PATH        location of cross-build system headers
323   --target-os=OS           compiler targets OS [$target_os]
324   --target-exec=CMD        command to run executables on target
325   --target-path=DIR        path to view of build directory on target
326   --target-samples=DIR     path to samples directory on target
327   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
328   --toolchain=NAME         set tool defaults according to NAME
329   --nm=NM                  use nm tool NM [$nm_default]
330   --ar=AR                  use archive tool AR [$ar_default]
331   --as=AS                  use assembler AS [$as_default]
332   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
333   --strip=STRIP            use strip tool STRIP [$strip_default]
334   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
335   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
336   --cc=CC                  use C compiler CC [$cc_default]
337   --cxx=CXX                use C compiler CXX [$cxx_default]
338   --objcc=OCC              use ObjC compiler OCC [$cc_default]
339   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
340   --ld=LD                  use linker LD [$ld_default]
341   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
342   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
343   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
344   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
345   --host-cc=HOSTCC         use host C compiler HOSTCC
346   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
347   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
348   --host-ld=HOSTLD         use host linker HOSTLD
349   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
350   --host-libs=HLIBS        use libs HLIBS when linking for host
351   --host-os=OS             compiler host OS [$target_os]
352   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
353   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
354   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
355   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
356   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
357   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
358   --extra-libs=ELIBS       add ELIBS [$ELIBS]
359   --extra-version=STRING   version string suffix []
360   --optflags=OPTFLAGS      override optimization-related compiler flags
361   --build-suffix=SUFFIX    library name suffix []
362   --enable-pic             build position-independent code
363   --enable-thumb           compile for Thumb instruction set
364   --enable-lto             use link-time optimization
365   --env="ENV=override"     override the environment variables
366
367 Advanced options (experts only):
368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
369   --custom-allocator=NAME  use a supported custom allocator
370   --disable-symver         disable symbol versioning
371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
372   --disable-safe-bitstream-reader
373                            disable buffer boundary checking in bitreaders
374                            (faster, but may crash)
375   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
376   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
377
378 Optimization options (experts only):
379   --disable-asm            disable all assembly optimizations
380   --disable-altivec        disable AltiVec optimizations
381   --disable-vsx            disable VSX optimizations
382   --disable-power8         disable POWER8 optimizations
383   --disable-amd3dnow       disable 3DNow! optimizations
384   --disable-amd3dnowext    disable 3DNow! extended optimizations
385   --disable-mmx            disable MMX optimizations
386   --disable-mmxext         disable MMXEXT optimizations
387   --disable-sse            disable SSE optimizations
388   --disable-sse2           disable SSE2 optimizations
389   --disable-sse3           disable SSE3 optimizations
390   --disable-ssse3          disable SSSE3 optimizations
391   --disable-sse4           disable SSE4 optimizations
392   --disable-sse42          disable SSE4.2 optimizations
393   --disable-avx            disable AVX optimizations
394   --disable-xop            disable XOP optimizations
395   --disable-fma3           disable FMA3 optimizations
396   --disable-fma4           disable FMA4 optimizations
397   --disable-avx2           disable AVX2 optimizations
398   --disable-aesni          disable AESNI optimizations
399   --disable-armv5te        disable armv5te optimizations
400   --disable-armv6          disable armv6 optimizations
401   --disable-armv6t2        disable armv6t2 optimizations
402   --disable-vfp            disable VFP optimizations
403   --disable-neon           disable NEON optimizations
404   --disable-inline-asm     disable use of inline assembly
405   --disable-yasm           disable use of nasm/yasm assembly
406   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
407   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
408   --disable-msa            disable MSA optimizations
409   --disable-mipsfpu        disable floating point MIPS optimizations
410   --disable-mmi            disable Loongson SIMD optimizations
411   --disable-fast-unaligned consider unaligned accesses slow
412
413 Developer options (useful when working on FFmpeg itself):
414   --disable-debug          disable debugging symbols
415   --enable-debug=LEVEL     set the debug level [$debuglevel]
416   --disable-optimizations  disable compiler optimizations
417   --enable-extra-warnings  enable more compiler warnings
418   --disable-stripping      disable stripping of executables and shared libraries
419   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
420                            2 causes a slowdown at runtime.
421   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
422   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
423                            leaks and errors, using the specified valgrind binary.
424                            Cannot be combined with --target-exec
425   --enable-ftrapv          Trap arithmetic overflows
426   --samples=PATH           location of test samples for FATE, if not set use
427                            \$FATE_SAMPLES at make invocation time.
428   --enable-neon-clobber-test check NEON registers for clobbering (should be
429                            used only for debugging purposes)
430   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
431                            should be used only for debugging purposes)
432   --enable-random          randomly enable/disable components
433   --disable-random
434   --enable-random=LIST     randomly enable/disable specific components or
435   --disable-random=LIST    component groups. LIST is a comma-separated list
436                            of NAME[:PROB] entries where NAME is a component
437                            (group) and PROB the probability associated with
438                            NAME (default 0.5).
439   --random-seed=VALUE      seed value for --enable/disable-random
440   --disable-valgrind-backtrace do not print a backtrace under Valgrind
441                            (only applies to --disable-optimizations builds)
442
443 NOTE: Object files are built at the place where configure is launched.
444 EOF
445   exit 0
446 }
447
448 quotes='""'
449 if test -t 1 && which tput >/dev/null 2>&1; then
450     ncolors=$(tput colors)
451     if test -n "$ncolors" && test $ncolors -ge 8; then
452         bold_color=$(tput bold)
453         warn_color=$(tput setaf 3)
454         error_color=$(tput setaf 1)
455         reset_color=$(tput sgr0)
456     fi
457     # 72 used instead of 80 since that's the default of pr
458     ncols=$(tput cols)
459 fi
460 : ${ncols:=72}
461
462 log(){
463     echo "$@" >> $logfile
464 }
465
466 log_file(){
467     log BEGIN $1
468     pr -n -t $1 >> $logfile
469     log END $1
470 }
471
472 warn(){
473     log "WARNING: $*"
474     WARNINGS="${WARNINGS}WARNING: $*\n"
475 }
476
477 die(){
478     log "$@"
479     echo "$error_color$bold_color$@$reset_color"
480     cat <<EOF
481
482 If you think configure made a mistake, make sure you are using the latest
483 version from Git.  If the latest version fails, report the problem to the
484 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
485 EOF
486     if disabled logging; then
487         cat <<EOF
488 Rerun configure with logging enabled (do not use --disable-logging), and
489 include the log this produces with your report.
490 EOF
491     else
492         cat <<EOF
493 Include the log file "$logfile" produced by configure as this will help
494 solve the problem.
495 EOF
496     fi
497     exit 1
498 }
499
500 # Avoid locale weirdness, besides we really just want to translate ASCII.
501 toupper(){
502     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
503 }
504
505 tolower(){
506     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
507 }
508
509 c_escape(){
510     echo "$*" | sed 's/["\\]/\\\0/g'
511 }
512
513 sh_quote(){
514     v=$(echo "$1" | sed "s/'/'\\\\''/g")
515     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
516     echo "$v"
517 }
518
519 cleanws(){
520     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
521 }
522
523 filter(){
524     pat=$1
525     shift
526     for v; do
527         eval "case $v in $pat) echo $v ;; esac"
528     done
529 }
530
531 filter_out(){
532     pat=$1
533     shift
534     for v; do
535         eval "case $v in $pat) ;; *) echo $v ;; esac"
536     done
537 }
538
539 map(){
540     m=$1
541     shift
542     for v; do eval $m; done
543 }
544
545 add_suffix(){
546     suffix=$1
547     shift
548     for v; do echo ${v}${suffix}; done
549 }
550
551 set_all(){
552     value=$1
553     shift
554     for var in $*; do
555         eval $var=$value
556     done
557 }
558
559 set_weak(){
560     value=$1
561     shift
562     for var; do
563         eval : \${$var:=$value}
564     done
565 }
566
567 sanitize_var_name(){
568     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
569 }
570
571 set_safe(){
572     var=$1
573     shift
574     eval $(sanitize_var_name "$var")='$*'
575 }
576
577 get_safe(){
578     eval echo \$$(sanitize_var_name "$1")
579 }
580
581 pushvar(){
582     for pvar in $*; do
583         eval level=\${${pvar}_level:=0}
584         eval ${pvar}_${level}="\$$pvar"
585         eval ${pvar}_level=$(($level+1))
586     done
587 }
588
589 popvar(){
590     for pvar in $*; do
591         eval level=\${${pvar}_level:-0}
592         test $level = 0 && continue
593         eval level=$(($level-1))
594         eval $pvar="\${${pvar}_${level}}"
595         eval ${pvar}_level=$level
596         eval unset ${pvar}_${level}
597     done
598 }
599
600 request(){
601     for var in $*; do
602         eval ${var}_requested=yes
603         eval $var=
604     done
605 }
606
607 enable(){
608     set_all yes $*
609 }
610
611 disable(){
612     set_all no $*
613 }
614
615 enable_weak(){
616     set_weak yes $*
617 }
618
619 disable_weak(){
620     set_weak no $*
621 }
622
623 enable_safe(){
624     for var; do
625         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
626     done
627 }
628
629 disable_safe(){
630     for var; do
631         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
632     done
633 }
634
635 do_enable_deep(){
636     for var; do
637         enabled $var && continue
638         eval sel="\$${var}_select"
639         eval sgs="\$${var}_suggest"
640         pushvar var sgs
641         enable_deep $sel
642         popvar sgs
643         enable_deep_weak $sgs
644         popvar var
645     done
646 }
647
648 enable_deep(){
649     do_enable_deep $*
650     enable $*
651 }
652
653 enable_deep_weak(){
654     for var; do
655         disabled $var && continue
656         pushvar var
657         do_enable_deep $var
658         popvar var
659         enable_weak $var
660     done
661 }
662
663 requested(){
664     test "${1#!}" = "$1" && op='=' || op=!=
665     eval test "x\$${1#!}_requested" $op "xyes"
666 }
667
668 enabled(){
669     test "${1#!}" = "$1" && op='=' || op=!=
670     eval test "x\$${1#!}" $op "xyes"
671 }
672
673 disabled(){
674     test "${1#!}" = "$1" && op='=' || op=!=
675     eval test "x\$${1#!}" $op "xno"
676 }
677
678 enabled_all(){
679     for opt; do
680         enabled $opt || return 1
681     done
682 }
683
684 disabled_all(){
685     for opt; do
686         disabled $opt || return 1
687     done
688 }
689
690 enabled_any(){
691     for opt; do
692         enabled $opt && return 0
693     done
694 }
695
696 disabled_any(){
697     for opt; do
698         disabled $opt && return 0
699     done
700     return 1
701 }
702
703 set_default(){
704     for opt; do
705         eval : \${$opt:=\$${opt}_default}
706     done
707 }
708
709 is_in(){
710     value=$1
711     shift
712     for var in $*; do
713         [ $var = $value ] && return 0
714     done
715     return 1
716 }
717
718 do_check_deps(){
719     for cfg; do
720         cfg="${cfg#!}"
721         enabled ${cfg}_checking && die "Circular dependency for $cfg."
722         disabled ${cfg}_checking && continue
723         enable ${cfg}_checking
724         append allopts $cfg
725
726         eval dep_all="\$${cfg}_deps"
727         eval dep_any="\$${cfg}_deps_any"
728         eval dep_sel="\$${cfg}_select"
729         eval dep_sgs="\$${cfg}_suggest"
730         eval dep_ifa="\$${cfg}_if"
731         eval dep_ifn="\$${cfg}_if_any"
732
733         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
734         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
735         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
736
737         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
738         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
739         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
740         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
741         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
742
743         if enabled $cfg; then
744             enable_deep $dep_sel
745             enable_deep_weak $dep_sgs
746         fi
747
748         disable ${cfg}_checking
749     done
750 }
751
752 check_deps(){
753     unset allopts
754
755     do_check_deps "$@"
756
757     for cfg in $allopts; do
758         enabled $cfg || continue
759         eval dep_extralibs="\$${cfg}_extralibs"
760         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
761     done
762 }
763
764 print_config(){
765     pfx=$1
766     files=$2
767     shift 2
768     map 'eval echo "$v \${$v:-no}"' "$@" |
769     awk "BEGIN { split(\"$files\", files) }
770         {
771             c = \"$pfx\" toupper(\$1);
772             v = \$2;
773             sub(/yes/, 1, v);
774             sub(/no/,  0, v);
775             for (f in files) {
776                 file = files[f];
777                 if (file ~ /\\.h\$/) {
778                     printf(\"#define %s %d\\n\", c, v) >>file;
779                 } else if (file ~ /\\.asm\$/) {
780                     printf(\"%%define %s %d\\n\", c, v) >>file;
781                 } else if (file ~ /\\.mak\$/) {
782                     n = -v ? \"\" : \"!\";
783                     printf(\"%s%s=yes\\n\", n, c) >>file;
784                 } else if (file ~ /\\.texi\$/) {
785                     pre = -v ? \"\" : \"@c \";
786                     yesno = \$2;
787                     c2 = tolower(c);
788                     gsub(/_/, \"-\", c2);
789                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
790                 }
791             }
792         }"
793 }
794
795 print_enabled(){
796     suf=$1
797     shift
798     for v; do
799         enabled $v && printf "%s\n" ${v%$suf}
800     done
801 }
802
803 append(){
804     var=$1
805     shift
806     eval "$var=\"\$$var $*\""
807 }
808
809 prepend(){
810     var=$1
811     shift
812     eval "$var=\"$* \$$var\""
813 }
814
815 unique(){
816     var=$1
817     uniq_list=""
818     for tok in $(eval echo \$$var); do
819         uniq_list="$(filter_out $tok $uniq_list) $tok"
820     done
821     eval "$var=\"${uniq_list}\""
822 }
823
824 add_cppflags(){
825     append CPPFLAGS "$@"
826 }
827
828 add_cflags(){
829     append CFLAGS $($cflags_filter "$@")
830 }
831
832 add_cxxflags(){
833     append CXXFLAGS $($cflags_filter "$@")
834 }
835
836 add_asflags(){
837     append ASFLAGS $($asflags_filter "$@")
838 }
839
840 add_objcflags(){
841     append OBJCFLAGS $($objcflags_filter "$@")
842 }
843
844 add_ldflags(){
845     append LDFLAGS $($ldflags_filter "$@")
846 }
847
848 add_ldexeflags(){
849     append LDEXEFLAGS $($ldflags_filter "$@")
850 }
851
852 add_ldlibflags(){
853     append LDLIBFLAGS $($ldflags_filter "$@")
854 }
855
856 add_stripflags(){
857     append ASMSTRIPFLAGS "$@"
858 }
859
860 add_extralibs(){
861     prepend extralibs $($ldflags_filter "$@")
862 }
863
864 add_host_cppflags(){
865     append host_cppflags "$@"
866 }
867
868 add_host_cflags(){
869     append host_cflags $($host_cflags_filter "$@")
870 }
871
872 add_host_ldflags(){
873     append host_ldflags $($host_ldflags_filter "$@")
874 }
875
876 add_compat(){
877     append compat_objs $1
878     shift
879     map 'add_cppflags -D$v' "$@"
880 }
881
882 check_cmd(){
883     log "$@"
884     "$@" >> $logfile 2>&1
885 }
886
887 check_stat(){
888     log check_stat "$@"
889     stat "$1" >> $logfile 2>&1
890 }
891
892 cc_o(){
893     eval printf '%s\\n' $CC_O
894 }
895
896 cc_e(){
897     eval printf '%s\\n' $CC_E
898 }
899
900 check_cc(){
901     log check_cc "$@"
902     cat > $TMPC
903     log_file $TMPC
904     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
905 }
906
907 check_cxx(){
908     log check_cxx "$@"
909     cat > $TMPCPP
910     log_file $TMPCPP
911     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
912 }
913
914 check_objcc(){
915     log check_objcc "$@"
916     cat > $TMPM
917     log_file $TMPM
918     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
919 }
920
921 check_cpp(){
922     log check_cpp "$@"
923     cat > $TMPC
924     log_file $TMPC
925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
926 }
927
928 as_o(){
929     eval printf '%s\\n' $AS_O
930 }
931
932 check_as(){
933     log check_as "$@"
934     cat > $TMPS
935     log_file $TMPS
936     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
937 }
938
939 check_inline_asm(){
940     log check_inline_asm "$@"
941     name="$1"
942     code="$2"
943     shift 2
944     disable $name
945     check_cc "$@" <<EOF && enable $name
946 void foo(void){ __asm__ volatile($code); }
947 EOF
948 }
949
950 check_inline_asm_flags(){
951     log check_inline_asm_flags "$@"
952     name="$1"
953     code="$2"
954     flags=''
955     shift 2
956     while [ "$1" != "" ]; do
957       append flags $1
958       shift
959     done;
960     disable $name
961     cat > $TMPC <<EOF
962 void foo(void){ __asm__ volatile($code); }
963 EOF
964     log_file $TMPC
965     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
966     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
967 }
968
969 check_insn(){
970     log check_insn "$@"
971     check_inline_asm ${1}_inline "\"$2\""
972     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
973 }
974
975 check_yasm(){
976     log check_yasm "$@"
977     echo "$1" > $TMPS
978     log_file $TMPS
979     shift 1
980     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
981 }
982
983 ld_o(){
984     eval printf '%s\\n' $LD_O
985 }
986
987 check_ld(){
988     log check_ld "$@"
989     type=$1
990     shift 1
991     flags=$(filter_out '-l*|*.so' $@)
992     libs=$(filter '-l*|*.so' $@)
993     check_$type $($cflags_filter $flags) || return
994     flags=$($ldflags_filter $flags)
995     libs=$($ldflags_filter $libs)
996     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
997 }
998
999 print_include(){
1000     hdr=$1
1001     test "${hdr%.h}" = "${hdr}" &&
1002         echo "#include $hdr"    ||
1003         echo "#include <$hdr>"
1004 }
1005
1006 check_code(){
1007     log check_code "$@"
1008     check=$1
1009     headers=$2
1010     code=$3
1011     shift 3
1012     {
1013         for hdr in $headers; do
1014             print_include $hdr
1015         done
1016         echo "int main(void) { $code; return 0; }"
1017     } | check_$check "$@"
1018 }
1019
1020 check_cppflags(){
1021     log check_cppflags "$@"
1022     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1023 int x;
1024 EOF
1025 }
1026
1027 test_cflags(){
1028     log test_cflags "$@"
1029     set -- $($cflags_filter "$@")
1030     check_cc "$@" <<EOF
1031 int x;
1032 EOF
1033 }
1034
1035 check_cflags(){
1036     log check_cflags "$@"
1037     test_cflags "$@" && add_cflags "$@"
1038 }
1039
1040 check_cxxflags(){
1041     log check_cxxflags "$@"
1042     set -- $($cflags_filter "$@")
1043     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1044 int x;
1045 EOF
1046 }
1047
1048 test_objcflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_objcc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_objcflags(){
1057     log check_cflags "$@"
1058     test_objcflags "$@" && add_objcflags "$@"
1059 }
1060
1061 test_ldflags(){
1062     log test_ldflags "$@"
1063     check_ld "cc" "$@" <<EOF
1064 int main(void){ return 0; }
1065 EOF
1066 }
1067
1068 check_ldflags(){
1069     log check_ldflags "$@"
1070     test_ldflags "$@" && add_ldflags "$@"
1071 }
1072
1073 test_stripflags(){
1074     log test_stripflags "$@"
1075     # call check_cc to get a fresh TMPO
1076     check_cc <<EOF
1077 int main(void) { return 0; }
1078 EOF
1079     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1080 }
1081
1082 check_stripflags(){
1083     log check_stripflags "$@"
1084     test_stripflags "$@" && add_stripflags "$@"
1085 }
1086
1087 check_header(){
1088     log check_header "$@"
1089     header=$1
1090     shift
1091     disable_safe $header
1092     check_cpp "$@" <<EOF && enable_safe $header
1093 #include <$header>
1094 int x;
1095 EOF
1096 }
1097
1098 check_header_objcc(){
1099     log check_header_objcc "$@"
1100     rm -f -- "$TMPO"
1101     header=$1
1102     shift
1103     disable_safe $header
1104     {
1105        echo "#include <$header>"
1106        echo "int main(void) { return 0; }"
1107     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1108 }
1109
1110 check_func(){
1111     log check_func "$@"
1112     func=$1
1113     shift
1114     disable $func
1115     check_ld "cc" "$@" <<EOF && enable $func
1116 extern int $func();
1117 int main(void){ $func(); }
1118 EOF
1119 }
1120
1121 check_complexfunc(){
1122     log check_complexfunc "$@"
1123     func=$1
1124     narg=$2
1125     shift 2
1126     test $narg = 2 && args="f, g" || args="f * I"
1127     disable $func
1128     check_ld "cc" "$@" <<EOF && enable $func
1129 #include <complex.h>
1130 #include <math.h>
1131 float foo(complex float f, complex float g) { return $func($args); }
1132 int main(void){ return (int) foo; }
1133 EOF
1134 }
1135
1136 check_mathfunc(){
1137     log check_mathfunc "$@"
1138     func=$1
1139     narg=$2
1140     shift 2
1141     test $narg = 2 && args="f, g" || args="f"
1142     disable $func
1143     check_ld "cc" "$@" <<EOF && enable $func
1144 #include <math.h>
1145 float foo(float f, float g) { return $func($args); }
1146 int main(void){ return (int) foo; }
1147 EOF
1148 }
1149
1150 check_func_headers(){
1151     log check_func_headers "$@"
1152     headers=$1
1153     funcs=$2
1154     shift 2
1155     {
1156         for hdr in $headers; do
1157             print_include $hdr
1158         done
1159         echo "#include <stdint.h>"
1160         for func in $funcs; do
1161             echo "long check_$func(void) { return (long) $func; }"
1162         done
1163         echo "int main(void) { int ret = 0;"
1164         # LTO could optimize out the test functions without this
1165         for func in $funcs; do
1166             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1167         done
1168         echo "return ret; }"
1169     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1170 }
1171
1172 check_class_headers_cpp(){
1173     log check_class_headers_cpp "$@"
1174     headers=$1
1175     classes=$2
1176     shift 2
1177     {
1178         for hdr in $headers; do
1179             echo "#include <$hdr>"
1180         done
1181         echo "int main(void) { "
1182         i=1
1183         for class in $classes; do
1184             echo "$class obj$i;"
1185             i=$(expr $i + 1)
1186         done
1187         echo "return 0; }"
1188     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1189 }
1190
1191 check_cpp_condition(){
1192     log check_cpp_condition "$@"
1193     header=$1
1194     condition=$2
1195     shift 2
1196     check_cpp "$@" <<EOF
1197 #include <$header>
1198 #if !($condition)
1199 #error "unsatisfied condition: $condition"
1200 #endif
1201 EOF
1202 }
1203
1204 test_cflags_cc(){
1205     log test_cflags_cc "$@"
1206     flags=$1
1207     header=$2
1208     condition=$3
1209     shift 3
1210     set -- $($cflags_filter "$flags")
1211     check_cc "$@" <<EOF
1212 #include <$header>
1213 #if !($condition)
1214 #error "unsatisfied condition: $condition"
1215 #endif
1216 EOF
1217 }
1218
1219 check_lib(){
1220     log check_lib "$@"
1221     header="$1"
1222     func="$2"
1223     shift 2
1224     check_header $header && check_func $func "$@" && add_extralibs "$@"
1225 }
1226
1227 check_lib2(){
1228     log check_lib2 "$@"
1229     headers="$1"
1230     funcs="$2"
1231     shift 2
1232     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1233 }
1234
1235 check_lib_cpp(){
1236     log check_lib_cpp "$@"
1237     headers="$1"
1238     classes="$2"
1239     shift 2
1240     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1241 }
1242
1243 check_pkg_config(){
1244     log check_pkg_config "$@"
1245     pkgandversion="$1"
1246     pkg="${1%% *}"
1247     headers="$2"
1248     funcs="$3"
1249     shift 3
1250     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1251     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1252     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1253     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1254         set_safe "${pkg}_cflags" $pkg_cflags   &&
1255         set_safe "${pkg}_libs"   $pkg_libs
1256 }
1257
1258 check_exec(){
1259     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1260 }
1261
1262 check_exec_crash(){
1263     code=$(cat)
1264
1265     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1266     # are safe but may not be available everywhere.  Thus we use
1267     # raise(SIGTERM) instead.  The check is run in a subshell so we
1268     # can redirect the "Terminated" message from the shell.  SIGBUS
1269     # is not defined by standard C so it is used conditionally.
1270
1271     (check_exec "$@") >> $logfile 2>&1 <<EOF
1272 #include <signal.h>
1273 static void sighandler(int sig){
1274     raise(SIGTERM);
1275 }
1276 int foo(void){
1277     $code
1278 }
1279 int (*func_ptr)(void) = foo;
1280 int main(void){
1281     signal(SIGILL, sighandler);
1282     signal(SIGFPE, sighandler);
1283     signal(SIGSEGV, sighandler);
1284 #ifdef SIGBUS
1285     signal(SIGBUS, sighandler);
1286 #endif
1287     return func_ptr();
1288 }
1289 EOF
1290 }
1291
1292 check_type(){
1293     log check_type "$@"
1294     headers=$1
1295     type=$2
1296     shift 2
1297     disable_safe "$type"
1298     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1299 }
1300
1301 check_struct(){
1302     log check_struct "$@"
1303     headers=$1
1304     struct=$2
1305     member=$3
1306     shift 3
1307     disable_safe "${struct}_${member}"
1308     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1309         enable_safe "${struct}_${member}"
1310 }
1311
1312 check_builtin(){
1313     log check_builtin "$@"
1314     name=$1
1315     headers=$2
1316     builtin=$3
1317     shift 3
1318     disable "$name"
1319     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1320 }
1321
1322 check_compile_assert(){
1323     log check_compile_assert "$@"
1324     name=$1
1325     headers=$2
1326     condition=$3
1327     shift 3
1328     disable "$name"
1329     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1330 }
1331
1332 require(){
1333     name="$1"
1334     header="$2"
1335     func="$3"
1336     shift 3
1337     check_lib $header $func "$@" || die "ERROR: $name not found"
1338 }
1339
1340 require2(){
1341     name="$1"
1342     headers="$2"
1343     func="$3"
1344     shift 3
1345     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1346 }
1347
1348 require_cpp(){
1349     name="$1"
1350     headers="$2"
1351     classes="$3"
1352     shift 3
1353     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1354 }
1355
1356 use_pkg_config(){
1357     pkg="$1"
1358     check_pkg_config "$@" || return 1
1359     add_cflags    $(get_safe "${pkg}_cflags")
1360     add_extralibs $(get_safe "${pkg}_libs")
1361 }
1362
1363 require_pkg_config(){
1364     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1365 }
1366
1367 require_libfreetype(){
1368     log require_libfreetype "$@"
1369     pkg="freetype2"
1370     check_cmd $pkg_config --exists --print-errors $pkg \
1371       || die "ERROR: $pkg not found"
1372     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1373     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1374     {
1375         echo "#include <ft2build.h>"
1376         echo "#include FT_FREETYPE_H"
1377         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1378         echo "int main(void) { return 0; }"
1379     } | check_ld "cc" $pkg_cflags $pkg_libs \
1380       && set_safe "${pkg}_cflags" $pkg_cflags \
1381       && set_safe "${pkg}_libs"   $pkg_libs \
1382       || die "ERROR: $pkg not found"
1383     add_cflags    $(get_safe "${pkg}_cflags")
1384     add_extralibs $(get_safe "${pkg}_libs")
1385 }
1386
1387 hostcc_e(){
1388     eval printf '%s\\n' $HOSTCC_E
1389 }
1390
1391 hostcc_o(){
1392     eval printf '%s\\n' $HOSTCC_O
1393 }
1394
1395 check_host_cc(){
1396     log check_host_cc "$@"
1397     cat > $TMPC
1398     log_file $TMPC
1399     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1400 }
1401
1402 check_host_cpp(){
1403     log check_host_cpp "$@"
1404     cat > $TMPC
1405     log_file $TMPC
1406     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1407 }
1408
1409 check_host_cppflags(){
1410     log check_host_cppflags "$@"
1411     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1412 int x;
1413 EOF
1414 }
1415
1416 check_host_cflags(){
1417     log check_host_cflags "$@"
1418     set -- $($host_cflags_filter "$@")
1419     check_host_cc "$@" <<EOF && append host_cflags "$@"
1420 int x;
1421 EOF
1422 }
1423
1424 check_host_cpp_condition(){
1425     log check_host_cpp_condition "$@"
1426     header=$1
1427     condition=$2
1428     shift 2
1429     check_host_cpp "$@" <<EOF
1430 #include <$header>
1431 #if !($condition)
1432 #error "unsatisfied condition: $condition"
1433 #endif
1434 EOF
1435 }
1436
1437 cp_if_changed(){
1438     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1439     mkdir -p "$(dirname $2)"
1440     $cp_f "$1" "$2"
1441 }
1442
1443 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1444 # system-dependent things.
1445
1446 AVCODEC_COMPONENTS="
1447     bsfs
1448     decoders
1449     encoders
1450     hwaccels
1451     parsers
1452 "
1453
1454 AVDEVICE_COMPONENTS="
1455     indevs
1456     outdevs
1457 "
1458 AVFILTER_COMPONENTS="
1459     filters
1460 "
1461 AVFORMAT_COMPONENTS="
1462     demuxers
1463     muxers
1464     protocols
1465 "
1466
1467 AVRESAMPLE_COMPONENTS=""
1468 AVUTIL_COMPONENTS=""
1469
1470 COMPONENT_LIST="
1471     $AVCODEC_COMPONENTS
1472     $AVDEVICE_COMPONENTS
1473     $AVFILTER_COMPONENTS
1474     $AVFORMAT_COMPONENTS
1475     $AVRESAMPLE_COMPONENTS
1476     $AVUTIL_COMPONENTS
1477 "
1478
1479 EXAMPLE_LIST="
1480     avio_dir_cmd_example
1481     avio_reading_example
1482     decoding_encoding_example
1483     demuxing_decoding_example
1484     extract_mvs_example
1485     filter_audio_example
1486     filtering_audio_example
1487     filtering_video_example
1488     http_multiclient_example
1489     metadata_example
1490     muxing_example
1491     qsvdec_example
1492     remuxing_example
1493     resampling_audio_example
1494     scaling_video_example
1495     transcode_aac_example
1496     transcoding_example
1497 "
1498 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1499     bzlib
1500     iconv
1501     libxcb
1502     libxcb_shm
1503     libxcb_shape
1504     libxcb_xfixes
1505     lzma
1506     schannel
1507     sdl
1508     sdl2
1509     securetransport
1510     xlib
1511     zlib
1512 "
1513
1514 EXTERNAL_LIBRARY_LIST="
1515     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1516     avisynth
1517     chromaprint
1518     crystalhd
1519     decklink
1520     frei0r
1521     gcrypt
1522     gmp
1523     gnutls
1524     jni
1525     ladspa
1526     libass
1527     libbluray
1528     libbs2b
1529     libcaca
1530     libcdio
1531     libcelt
1532     libdc1394
1533     libfdk_aac
1534     libflite
1535     libfontconfig
1536     libfreetype
1537     libfribidi
1538     libgme
1539     libgsm
1540     libiec61883
1541     libilbc
1542     libkvazaar
1543     libmodplug
1544     libmp3lame
1545     libnut
1546     libopencore_amrnb
1547     libopencore_amrwb
1548     libopencv
1549     libopenh264
1550     libopenjpeg
1551     libopenmpt
1552     libopus
1553     libpulse
1554     librtmp
1555     librubberband
1556     libschroedinger
1557     libshine
1558     libsmbclient
1559     libsnappy
1560     libsoxr
1561     libspeex
1562     libssh
1563     libtesseract
1564     libtheora
1565     libtwolame
1566     libv4l2
1567     libvidstab
1568     libvo_amrwbenc
1569     libvorbis
1570     libvpx
1571     libwavpack
1572     libwebp
1573     libx264
1574     libx265
1575     libxavs
1576     libxvid
1577     libzimg
1578     libzmq
1579     libzvbi
1580     mediacodec
1581     netcdf
1582     openal
1583     opencl
1584     opengl
1585     openssl
1586     videotoolbox
1587     x11grab
1588 "
1589 HWACCEL_AUTODETECT_LIBRARY_LIST="
1590     audiotoolbox
1591     cuda
1592     cuvid
1593     d3d11va
1594     dxva2
1595     nvenc
1596     vaapi
1597     vda
1598     vdpau
1599     videotoolbox_hwaccel
1600     xvmc
1601 "
1602
1603 HWACCEL_LIBRARY_LIST="
1604     $HWACCEL_AUTODETECT_LIBRARY_LIST
1605     libmfx
1606     libnpp
1607     mmal
1608     omx
1609 "
1610
1611 DOCUMENT_LIST="
1612     doc
1613     htmlpages
1614     manpages
1615     podpages
1616     txtpages
1617 "
1618
1619 FEATURE_LIST="
1620     ftrapv
1621     gray
1622     hardcoded_tables
1623     omx_rpi
1624     runtime_cpudetect
1625     safe_bitstream_reader
1626     shared
1627     small
1628     static
1629     swscale_alpha
1630 "
1631
1632 LIBRARY_LIST="
1633     avcodec
1634     avdevice
1635     avfilter
1636     avformat
1637     avresample
1638     avutil
1639     postproc
1640     swresample
1641     swscale
1642 "
1643
1644 LICENSE_LIST="
1645     gpl
1646     nonfree
1647     version3
1648 "
1649
1650 PROGRAM_LIST="
1651     ffplay
1652     ffprobe
1653     ffserver
1654     ffmpeg
1655 "
1656
1657 SUBSYSTEM_LIST="
1658     dct
1659     dwt
1660     error_resilience
1661     faan
1662     fast_unaligned
1663     fft
1664     lsp
1665     lzo
1666     mdct
1667     pixelutils
1668     network
1669     rdft
1670 "
1671
1672 CONFIG_LIST="
1673     $COMPONENT_LIST
1674     $DOCUMENT_LIST
1675     $EXAMPLE_LIST
1676     $EXTERNAL_LIBRARY_LIST
1677     $HWACCEL_LIBRARY_LIST
1678     $FEATURE_LIST
1679     $LICENSE_LIST
1680     $LIBRARY_LIST
1681     $PROGRAM_LIST
1682     $SUBSYSTEM_LIST
1683     fontconfig
1684     memalign_hack
1685     memory_poisoning
1686     neon_clobber_test
1687     pic
1688     pod2man
1689     raise_major
1690     thumb
1691     valgrind_backtrace
1692     xmm_clobber_test
1693 "
1694
1695 THREADS_LIST="
1696     pthreads
1697     os2threads
1698     w32threads
1699 "
1700
1701 ATOMICS_LIST="
1702     atomics_gcc
1703     atomics_suncc
1704     atomics_win32
1705 "
1706
1707 AUTODETECT_LIBS="
1708     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1709     $HWACCEL_AUTODETECT_LIBRARY_LIST
1710     $THREADS_LIST
1711 "
1712
1713 ARCH_LIST="
1714     aarch64
1715     alpha
1716     arm
1717     avr32
1718     avr32_ap
1719     avr32_uc
1720     bfin
1721     ia64
1722     m68k
1723     mips
1724     mips64
1725     parisc
1726     ppc
1727     ppc64
1728     s390
1729     sh4
1730     sparc
1731     sparc64
1732     tilegx
1733     tilepro
1734     tomi
1735     x86
1736     x86_32
1737     x86_64
1738 "
1739
1740 ARCH_EXT_LIST_ARM="
1741     armv5te
1742     armv6
1743     armv6t2
1744     armv8
1745     neon
1746     vfp
1747     vfpv3
1748     setend
1749 "
1750
1751 ARCH_EXT_LIST_MIPS="
1752     mipsfpu
1753     mips32r2
1754     mips32r5
1755     mips64r2
1756     mips32r6
1757     mips64r6
1758     mipsdsp
1759     mipsdspr2
1760     msa
1761 "
1762
1763 ARCH_EXT_LIST_LOONGSON="
1764     loongson2
1765     loongson3
1766     mmi
1767 "
1768
1769 ARCH_EXT_LIST_X86_SIMD="
1770     aesni
1771     amd3dnow
1772     amd3dnowext
1773     avx
1774     avx2
1775     fma3
1776     fma4
1777     mmx
1778     mmxext
1779     sse
1780     sse2
1781     sse3
1782     sse4
1783     sse42
1784     ssse3
1785     xop
1786 "
1787
1788 ARCH_EXT_LIST_PPC="
1789     altivec
1790     dcbzl
1791     ldbrx
1792     power8
1793     ppc4xx
1794     vsx
1795 "
1796
1797 ARCH_EXT_LIST_X86="
1798     $ARCH_EXT_LIST_X86_SIMD
1799     cpunop
1800     i686
1801 "
1802
1803 ARCH_EXT_LIST="
1804     $ARCH_EXT_LIST_ARM
1805     $ARCH_EXT_LIST_PPC
1806     $ARCH_EXT_LIST_X86
1807     $ARCH_EXT_LIST_MIPS
1808     $ARCH_EXT_LIST_LOONGSON
1809 "
1810
1811 ARCH_FEATURES="
1812     aligned_stack
1813     fast_64bit
1814     fast_clz
1815     fast_cmov
1816     local_aligned_8
1817     local_aligned_16
1818     local_aligned_32
1819     simd_align_16
1820 "
1821
1822 BUILTIN_LIST="
1823     atomic_cas_ptr
1824     atomic_compare_exchange
1825     machine_rw_barrier
1826     MemoryBarrier
1827     mm_empty
1828     rdtsc
1829     sarestart
1830     sem_timedwait
1831     sync_val_compare_and_swap
1832 "
1833 HAVE_LIST_CMDLINE="
1834     inline_asm
1835     symver
1836     yasm
1837 "
1838
1839 HAVE_LIST_PUB="
1840     bigendian
1841     fast_unaligned
1842 "
1843
1844 HEADERS_LIST="
1845     alsa_asoundlib_h
1846     altivec_h
1847     arpa_inet_h
1848     asm_types_h
1849     cdio_paranoia_h
1850     cdio_paranoia_paranoia_h
1851     cuda_h
1852     dispatch_dispatch_h
1853     dev_bktr_ioctl_bt848_h
1854     dev_bktr_ioctl_meteor_h
1855     dev_ic_bt8xx_h
1856     dev_video_bktr_ioctl_bt848_h
1857     dev_video_meteor_ioctl_meteor_h
1858     direct_h
1859     dirent_h
1860     dlfcn_h
1861     d3d11_h
1862     dxva_h
1863     ES2_gl_h
1864     gsm_h
1865     io_h
1866     mach_mach_time_h
1867     machine_ioctl_bt848_h
1868     machine_ioctl_meteor_h
1869     malloc_h
1870     opencv2_core_core_c_h
1871     openjpeg_2_1_openjpeg_h
1872     openjpeg_2_0_openjpeg_h
1873     openjpeg_1_5_openjpeg_h
1874     OpenGL_gl3_h
1875     poll_h
1876     sndio_h
1877     soundcard_h
1878     stdatomic_h
1879     sys_mman_h
1880     sys_param_h
1881     sys_resource_h
1882     sys_select_h
1883     sys_soundcard_h
1884     sys_time_h
1885     sys_un_h
1886     sys_videoio_h
1887     termios_h
1888     udplite_h
1889     unistd_h
1890     valgrind_valgrind_h
1891     windows_h
1892     winsock2_h
1893 "
1894
1895 INTRINSICS_LIST="
1896     intrinsics_neon
1897 "
1898
1899 COMPLEX_FUNCS="
1900     cabs
1901     cexp
1902 "
1903
1904 MATH_FUNCS="
1905     atanf
1906     atan2f
1907     cbrt
1908     cbrtf
1909     copysign
1910     cosf
1911     erf
1912     exp2
1913     exp2f
1914     expf
1915     hypot
1916     isfinite
1917     isinf
1918     isnan
1919     ldexpf
1920     llrint
1921     llrintf
1922     log2
1923     log2f
1924     log10f
1925     lrint
1926     lrintf
1927     powf
1928     rint
1929     round
1930     roundf
1931     sinf
1932     trunc
1933     truncf
1934 "
1935
1936 SYSTEM_FUNCS="
1937     access
1938     aligned_malloc
1939     arc4random
1940     clock_gettime
1941     closesocket
1942     CommandLineToArgvW
1943     CoTaskMemFree
1944     CryptGenRandom
1945     dlopen
1946     fcntl
1947     flt_lim
1948     fork
1949     getaddrinfo
1950     gethrtime
1951     getopt
1952     GetProcessAffinityMask
1953     GetProcessMemoryInfo
1954     GetProcessTimes
1955     getrusage
1956     GetSystemTimeAsFileTime
1957     gettimeofday
1958     glob
1959     glXGetProcAddress
1960     gmtime_r
1961     inet_aton
1962     isatty
1963     jack_port_get_latency_range
1964     kbhit
1965     LoadLibrary
1966     localtime_r
1967     lstat
1968     lzo1x_999_compress
1969     mach_absolute_time
1970     MapViewOfFile
1971     memalign
1972     mkstemp
1973     mmap
1974     mprotect
1975     nanosleep
1976     PeekNamedPipe
1977     posix_memalign
1978     pthread_cancel
1979     sched_getaffinity
1980     SetConsoleTextAttribute
1981     SetConsoleCtrlHandler
1982     setmode
1983     setrlimit
1984     Sleep
1985     strerror_r
1986     sysconf
1987     sysctl
1988     usleep
1989     UTGetOSTypeFromString
1990     VirtualAlloc
1991     wglGetProcAddress
1992 "
1993
1994 TOOLCHAIN_FEATURES="
1995     as_dn_directive
1996     as_func
1997     as_object_arch
1998     asm_mod_q
1999     attribute_may_alias
2000     attribute_packed
2001     ebp_available
2002     ebx_available
2003     gnu_as
2004     gnu_windres
2005     ibm_asm
2006     inline_asm_direct_symbol_refs
2007     inline_asm_labels
2008     inline_asm_nonlocal_labels
2009     pragma_deprecated
2010     rsync_contimeout
2011     symver_asm_label
2012     symver_gnu_asm
2013     vfp_args
2014     xform_asm
2015     xmm_clobbers
2016 "
2017
2018 TYPES_LIST="
2019     CONDITION_VARIABLE_Ptr
2020     socklen_t
2021     struct_addrinfo
2022     struct_group_source_req
2023     struct_ip_mreq_source
2024     struct_ipv6_mreq
2025     struct_msghdr_msg_flags
2026     struct_pollfd
2027     struct_rusage_ru_maxrss
2028     struct_sctp_event_subscribe
2029     struct_sockaddr_in6
2030     struct_sockaddr_sa_len
2031     struct_sockaddr_storage
2032     struct_stat_st_mtim_tv_nsec
2033     struct_v4l2_frmivalenum_discrete
2034 "
2035
2036 HAVE_LIST="
2037     $ARCH_EXT_LIST
2038     $(add_suffix _external $ARCH_EXT_LIST)
2039     $(add_suffix _inline   $ARCH_EXT_LIST)
2040     $ARCH_FEATURES
2041     $ATOMICS_LIST
2042     $BUILTIN_LIST
2043     $COMPLEX_FUNCS
2044     $HAVE_LIST_CMDLINE
2045     $HAVE_LIST_PUB
2046     $HEADERS_LIST
2047     $INTRINSICS_LIST
2048     $MATH_FUNCS
2049     $SYSTEM_FUNCS
2050     $THREADS_LIST
2051     $TOOLCHAIN_FEATURES
2052     $TYPES_LIST
2053     atomics_native
2054     dos_paths
2055     dxva2_lib
2056     dxva2api_cobj
2057     libc_msvcrt
2058     libdc1394_1
2059     libdc1394_2
2060     makeinfo
2061     makeinfo_html
2062     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2063     perl
2064     pod2man
2065     sdl2
2066     section_data_rel_ro
2067     texi2html
2068     threads
2069     vaapi_drm
2070     vaapi_x11
2071     vdpau_x11
2072     winrt
2073     xlib
2074 "
2075
2076 # options emitted with CONFIG_ prefix but not available on the command line
2077 CONFIG_EXTRA="
2078     aandcttables
2079     ac3dsp
2080     audio_frame_queue
2081     audiodsp
2082     blockdsp
2083     bswapdsp
2084     cabac
2085     dirac_parse
2086     dvprofile
2087     exif
2088     faandct
2089     faanidct
2090     fdctdsp
2091     flacdsp
2092     fmtconvert
2093     frame_thread_encoder
2094     g722dsp
2095     golomb
2096     gplv3
2097     h263dsp
2098     h264chroma
2099     h264dsp
2100     h264parse
2101     h264pred
2102     h264qpel
2103     hpeldsp
2104     huffman
2105     huffyuvdsp
2106     huffyuvencdsp
2107     idctdsp
2108     iirfilter
2109     imdct15
2110     intrax8
2111     iso_media
2112     ividsp
2113     jpegtables
2114     lgplv3
2115     libx262
2116     llauddsp
2117     llviddsp
2118     llvidencdsp
2119     lpc
2120     lzf
2121     me_cmp
2122     mpeg_er
2123     mpegaudio
2124     mpegaudiodsp
2125     mpegvideo
2126     mpegvideoenc
2127     mss34dsp
2128     pixblockdsp
2129     qpeldsp
2130     qsv
2131     qsvdec
2132     qsvenc
2133     rangecoder
2134     riffdec
2135     riffenc
2136     rtpdec
2137     rtpenc_chain
2138     rv34dsp
2139     sinewin
2140     snappy
2141     srtp
2142     startcode
2143     texturedsp
2144     texturedspenc
2145     tpeldsp
2146     vaapi_encode
2147     vc1dsp
2148     videodsp
2149     vp3dsp
2150     vp56dsp
2151     vp8dsp
2152     vt_bt2020
2153     wma_freqs
2154     wmv2dsp
2155 "
2156
2157 CMDLINE_SELECT="
2158     $ARCH_EXT_LIST
2159     $CONFIG_LIST
2160     $HAVE_LIST_CMDLINE
2161     $THREADS_LIST
2162     asm
2163     cross_compile
2164     debug
2165     extra_warnings
2166     logging
2167     lto
2168     optimizations
2169     rpath
2170     stripping
2171 "
2172
2173 PATHS_LIST="
2174     bindir
2175     datadir
2176     docdir
2177     incdir
2178     libdir
2179     mandir
2180     pkgconfigdir
2181     prefix
2182     shlibdir
2183     install_name_dir
2184 "
2185
2186 CMDLINE_SET="
2187     $PATHS_LIST
2188     ar
2189     arch
2190     as
2191     assert_level
2192     build_suffix
2193     cc
2194     objcc
2195     cpu
2196     cross_prefix
2197     custom_allocator
2198     cxx
2199     dep_cc
2200     doxygen
2201     env
2202     extra_version
2203     gas
2204     host_cc
2205     host_cflags
2206     host_ld
2207     host_ldflags
2208     host_libs
2209     host_os
2210     install
2211     ld
2212     ln_s
2213     logfile
2214     malloc_prefix
2215     nm
2216     optflags
2217     pkg_config
2218     pkg_config_flags
2219     progs_suffix
2220     random_seed
2221     ranlib
2222     samples
2223     strip
2224     sws_max_filter_size
2225     sysinclude
2226     sysroot
2227     target_exec
2228     target_os
2229     target_path
2230     target_samples
2231     tempprefix
2232     toolchain
2233     valgrind
2234     yasmexe
2235 "
2236
2237 CMDLINE_APPEND="
2238     extra_cflags
2239     extra_cxxflags
2240     extra_objcflags
2241     host_cppflags
2242 "
2243
2244 # code dependency declarations
2245
2246 # architecture extensions
2247
2248 armv5te_deps="arm"
2249 armv6_deps="arm"
2250 armv6t2_deps="arm"
2251 armv8_deps="aarch64"
2252 neon_deps_any="aarch64 arm"
2253 intrinsics_neon_deps="neon"
2254 vfp_deps_any="aarch64 arm"
2255 vfpv3_deps="vfp"
2256 setend_deps="arm"
2257
2258 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2259
2260 loongson2_deps="mips"
2261 loongson3_deps="mips"
2262 mipsfpu_deps="mips"
2263 mipsdsp_deps="mips"
2264 mipsdspr2_deps="mips"
2265 mips32r2_deps="mips"
2266 mips32r5_deps="mips"
2267 mips32r6_deps="mips"
2268 mips64r2_deps="mips"
2269 mips64r6_deps="mips"
2270 msa_deps="mipsfpu"
2271 mmi_deps="mips"
2272
2273 altivec_deps="ppc"
2274 dcbzl_deps="ppc"
2275 ldbrx_deps="ppc"
2276 ppc4xx_deps="ppc"
2277 vsx_deps="altivec"
2278 power8_deps="vsx"
2279
2280 cpunop_deps="i686"
2281 x86_64_select="i686"
2282 x86_64_suggest="fast_cmov"
2283
2284 amd3dnow_deps="mmx"
2285 amd3dnowext_deps="amd3dnow"
2286 i686_deps="x86"
2287 mmx_deps="x86"
2288 mmxext_deps="mmx"
2289 sse_deps="mmxext"
2290 sse2_deps="sse"
2291 sse3_deps="sse2"
2292 ssse3_deps="sse3"
2293 sse4_deps="ssse3"
2294 sse42_deps="sse4"
2295 aesni_deps="sse42"
2296 avx_deps="sse42"
2297 xop_deps="avx"
2298 fma3_deps="avx"
2299 fma4_deps="avx"
2300 avx2_deps="avx"
2301
2302 mmx_external_deps="yasm"
2303 mmx_inline_deps="inline_asm"
2304 mmx_suggest="mmx_external mmx_inline"
2305
2306 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2307     eval dep=\$${ext}_deps
2308     eval ${ext}_external_deps='"${dep}_external"'
2309     eval ${ext}_inline_deps='"${dep}_inline"'
2310     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2311 done
2312
2313 aligned_stack_if_any="aarch64 ppc x86"
2314 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2315 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2316 fast_unaligned_if_any="aarch64 ppc x86"
2317 simd_align_16_if_any="altivec neon sse"
2318
2319 # system capabilities
2320 symver_if_any="symver_asm_label symver_gnu_asm"
2321 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2322
2323 # threading support
2324 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2325 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2326 atomics_win32_if="MemoryBarrier"
2327 atomics_native_if_any="$ATOMICS_LIST"
2328 w32threads_deps="atomics_native"
2329 threads_if_any="$THREADS_LIST"
2330
2331 # subsystems
2332 dct_select="rdft"
2333 dirac_parse_select="golomb"
2334 error_resilience_select="me_cmp"
2335 faandct_deps="faan fdctdsp"
2336 faanidct_deps="faan idctdsp"
2337 h264dsp_select="startcode"
2338 frame_thread_encoder_deps="encoders threads"
2339 intrax8_select="blockdsp idctdsp"
2340 mdct_select="fft"
2341 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2342 mpeg_er_select="error_resilience"
2343 mpegaudio_select="mpegaudiodsp"
2344 mpegaudiodsp_select="dct"
2345 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2346 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2347 vc1dsp_select="h264chroma qpeldsp startcode"
2348 rdft_select="fft"
2349
2350 # decoders / encoders
2351 aac_decoder_select="imdct15 mdct sinewin"
2352 aac_fixed_decoder_select="mdct sinewin"
2353 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2354 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2355 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2356 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2357 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2358 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2359 adpcm_g722_decoder_select="g722dsp"
2360 adpcm_g722_encoder_select="g722dsp"
2361 aic_decoder_select="golomb idctdsp"
2362 alac_encoder_select="lpc"
2363 als_decoder_select="bswapdsp"
2364 amrnb_decoder_select="lsp"
2365 amrwb_decoder_select="lsp"
2366 amv_decoder_select="sp5x_decoder exif"
2367 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2368 ape_decoder_select="bswapdsp llauddsp"
2369 apng_decoder_select="zlib"
2370 apng_encoder_select="llvidencdsp zlib"
2371 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2372 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2373 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2374 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2375 atrac1_decoder_select="mdct sinewin"
2376 atrac3_decoder_select="mdct"
2377 atrac3p_decoder_select="mdct sinewin"
2378 avrn_decoder_select="exif jpegtables"
2379 bink_decoder_select="blockdsp hpeldsp"
2380 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2381 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2382 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2383 cllc_decoder_select="bswapdsp"
2384 comfortnoise_encoder_select="lpc"
2385 cook_decoder_select="audiodsp mdct sinewin"
2386 cscd_decoder_select="lzo"
2387 cscd_decoder_suggest="zlib"
2388 dca_decoder_select="mdct"
2389 dds_decoder_select="texturedsp"
2390 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2391 dnxhd_decoder_select="blockdsp idctdsp"
2392 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2393 dvvideo_decoder_select="dvprofile idctdsp"
2394 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2395 dxa_decoder_select="zlib"
2396 dxv_decoder_select="lzf texturedsp"
2397 eac3_decoder_select="ac3_decoder"
2398 eac3_encoder_select="ac3_encoder"
2399 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2400 eatgq_decoder_select="aandcttables"
2401 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2402 exr_decoder_select="zlib"
2403 ffv1_decoder_select="golomb rangecoder"
2404 ffv1_encoder_select="rangecoder"
2405 ffvhuff_decoder_select="huffyuv_decoder"
2406 ffvhuff_encoder_select="huffyuv_encoder"
2407 fic_decoder_select="golomb"
2408 flac_decoder_select="flacdsp golomb"
2409 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2410 flashsv2_decoder_select="zlib"
2411 flashsv2_encoder_select="zlib"
2412 flashsv_decoder_select="zlib"
2413 flashsv_encoder_select="zlib"
2414 flv_decoder_select="h263_decoder"
2415 flv_encoder_select="h263_encoder"
2416 fourxm_decoder_select="blockdsp bswapdsp"
2417 fraps_decoder_select="bswapdsp huffman"
2418 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2419 g729_decoder_select="audiodsp"
2420 h261_decoder_select="mpegvideo"
2421 h261_encoder_select="aandcttables mpegvideoenc"
2422 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2423 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2424 h263i_decoder_select="h263_decoder"
2425 h263p_decoder_select="h263_decoder"
2426 h263p_encoder_select="h263_encoder"
2427 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2428 h264_decoder_suggest="error_resilience"
2429 hap_decoder_select="snappy texturedsp"
2430 hap_encoder_deps="libsnappy"
2431 hap_encoder_select="texturedspenc"
2432 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2433 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2434 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2435 iac_decoder_select="imc_decoder"
2436 imc_decoder_select="bswapdsp fft mdct sinewin"
2437 indeo3_decoder_select="hpeldsp"
2438 indeo4_decoder_select="ividsp"
2439 indeo5_decoder_select="ividsp"
2440 interplay_video_decoder_select="hpeldsp"
2441 jpegls_decoder_select="golomb mjpeg_decoder"
2442 jpegls_encoder_select="golomb"
2443 jv_decoder_select="blockdsp"
2444 lagarith_decoder_select="llviddsp"
2445 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2446 loco_decoder_select="golomb"
2447 magicyuv_decoder_select="llviddsp"
2448 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2449 metasound_decoder_select="lsp mdct sinewin"
2450 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2451 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2452 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2453 mjpegb_decoder_select="mjpeg_decoder"
2454 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2455 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2456 mlp_decoder_select="mlp_parser"
2457 motionpixels_decoder_select="bswapdsp"
2458 mp1_decoder_select="mpegaudio"
2459 mp1float_decoder_select="mpegaudio"
2460 mp2_decoder_select="mpegaudio"
2461 mp2float_decoder_select="mpegaudio"
2462 mp3_decoder_select="mpegaudio"
2463 mp3adu_decoder_select="mpegaudio"
2464 mp3adufloat_decoder_select="mpegaudio"
2465 mp3float_decoder_select="mpegaudio"
2466 mp3on4_decoder_select="mpegaudio"
2467 mp3on4float_decoder_select="mpegaudio"
2468 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2469 mpc8_decoder_select="mpegaudiodsp"
2470 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2471 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2472 mpegvideo_decoder_select="mpegvideo"
2473 mpeg1video_decoder_select="mpegvideo"
2474 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2475 mpeg2video_decoder_select="mpegvideo"
2476 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2477 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2478 mpeg4_encoder_select="h263_encoder"
2479 msa1_decoder_select="mss34dsp"
2480 msmpeg4v1_decoder_select="h263_decoder"
2481 msmpeg4v2_decoder_select="h263_decoder"
2482 msmpeg4v2_encoder_select="h263_encoder"
2483 msmpeg4v3_decoder_select="h263_decoder"
2484 msmpeg4v3_encoder_select="h263_encoder"
2485 mss2_decoder_select="vc1_decoder mpegvideo"
2486 mts2_decoder_select="mss34dsp"
2487 mxpeg_decoder_select="mjpeg_decoder"
2488 nellymoser_decoder_select="mdct sinewin"
2489 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2490 nuv_decoder_select="idctdsp lzo"
2491 on2avc_decoder_select="mdct"
2492 opus_decoder_deps="swresample"
2493 opus_decoder_select="imdct15"
2494 png_decoder_select="zlib"
2495 png_encoder_select="llvidencdsp zlib"
2496 prores_decoder_select="blockdsp idctdsp"
2497 prores_encoder_select="fdctdsp"
2498 qcelp_decoder_select="lsp"
2499 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2500 ra_144_decoder_select="audiodsp"
2501 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2502 ralf_decoder_select="golomb"
2503 rawvideo_decoder_select="bswapdsp"
2504 rscc_decoder_select="zlib"
2505 rtjpeg_decoder_select="me_cmp"
2506 rv10_decoder_select="h263_decoder"
2507 rv10_encoder_select="h263_encoder"
2508 rv20_decoder_select="h263_decoder"
2509 rv20_encoder_select="h263_encoder"
2510 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2511 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2512 screenpresso_decoder_select="zlib"
2513 shorten_decoder_select="golomb"
2514 sipr_decoder_select="lsp"
2515 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2516 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2517 sonic_decoder_select="golomb rangecoder"
2518 sonic_encoder_select="golomb rangecoder"
2519 sonic_ls_encoder_select="golomb rangecoder"
2520 sp5x_decoder_select="mjpeg_decoder"
2521 svq1_decoder_select="hpeldsp"
2522 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2523 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2524 svq3_decoder_suggest="zlib"
2525 tak_decoder_select="audiodsp"
2526 tdsc_decoder_select="zlib mjpeg_decoder"
2527 theora_decoder_select="vp3_decoder"
2528 thp_decoder_select="mjpeg_decoder"
2529 tiff_decoder_suggest="zlib lzma"
2530 tiff_encoder_suggest="zlib"
2531 truehd_decoder_select="mlp_parser"
2532 truemotion2_decoder_select="bswapdsp"
2533 truespeech_decoder_select="bswapdsp"
2534 tscc_decoder_select="zlib"
2535 twinvq_decoder_select="mdct lsp sinewin"
2536 txd_decoder_select="texturedsp"
2537 utvideo_decoder_select="bswapdsp llviddsp"
2538 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2539 vble_decoder_select="llviddsp"
2540 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2541 vc1_qsv_decoder_deps="libmfx"
2542 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2543 vc1image_decoder_select="vc1_decoder"
2544 vorbis_decoder_select="mdct"
2545 vorbis_encoder_select="mdct"
2546 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2547 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2548 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2549 vp6a_decoder_select="vp6_decoder"
2550 vp6f_decoder_select="vp6_decoder"
2551 vp7_decoder_select="h264pred videodsp vp8dsp"
2552 vp8_decoder_select="h264pred videodsp vp8dsp"
2553 vp9_decoder_select="videodsp vp9_parser"
2554 webp_decoder_select="vp8_decoder exif"
2555 wmalossless_decoder_select="llauddsp"
2556 wmapro_decoder_select="mdct sinewin wma_freqs"
2557 wmav1_decoder_select="mdct sinewin wma_freqs"
2558 wmav1_encoder_select="mdct sinewin wma_freqs"
2559 wmav2_decoder_select="mdct sinewin wma_freqs"
2560 wmav2_encoder_select="mdct sinewin wma_freqs"
2561 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2562 wmv1_decoder_select="h263_decoder"
2563 wmv1_encoder_select="h263_encoder"
2564 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2565 wmv2_encoder_select="h263_encoder wmv2dsp"
2566 wmv3_decoder_select="vc1_decoder"
2567 wmv3image_decoder_select="wmv3_decoder"
2568 xma1_decoder_select="wmapro_decoder"
2569 xma2_decoder_select="wmapro_decoder"
2570 zerocodec_decoder_select="zlib"
2571 zlib_decoder_select="zlib"
2572 zlib_encoder_select="zlib"
2573 zmbv_decoder_select="zlib"
2574 zmbv_encoder_select="zlib"
2575
2576 # platform codecs
2577 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2578 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2579
2580 # hardware accelerators
2581 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2582 cuda_deps_any="dlopen LoadLibrary"
2583 cuvid_deps="cuda"
2584 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2585 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2586 dxva2_extralibs="-luser32"
2587 vaapi_deps="va_va_h"
2588 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2589 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2590 vda_deps="vda_framework pthreads"
2591 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2592 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2593 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2594 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2595 xvmc_deps="X11_extensions_XvMClib_h"
2596
2597 h263_vaapi_hwaccel_deps="vaapi"
2598 h263_vaapi_hwaccel_select="h263_decoder"
2599 h263_videotoolbox_hwaccel_deps="videotoolbox"
2600 h263_videotoolbox_hwaccel_select="h263_decoder"
2601 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2602 h264_cuvid_hwaccel_deps="cuda cuvid"
2603 h264_d3d11va_hwaccel_deps="d3d11va"
2604 h264_d3d11va_hwaccel_select="h264_decoder"
2605 h264_dxva2_hwaccel_deps="dxva2"
2606 h264_dxva2_hwaccel_select="h264_decoder"
2607 h264_mediacodec_decoder_deps="mediacodec"
2608 h264_mediacodec_hwaccel_deps="mediacodec"
2609 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2610 h264_mmal_decoder_deps="mmal"
2611 h264_mmal_decoder_select="mmal"
2612 h264_mmal_hwaccel_deps="mmal"
2613 h264_omx_encoder_deps="omx"
2614 h264_qsv_hwaccel_deps="libmfx"
2615 h264_vaapi_hwaccel_deps="vaapi"
2616 h264_vaapi_hwaccel_select="h264_decoder"
2617 h264_vda_decoder_deps="vda"
2618 h264_vda_decoder_select="h264_decoder"
2619 h264_vda_hwaccel_deps="vda"
2620 h264_vda_hwaccel_select="h264_decoder"
2621 h264_vda_old_hwaccel_deps="vda"
2622 h264_vda_old_hwaccel_select="h264_decoder"
2623 h264_vdpau_decoder_deps="vdpau"
2624 h264_vdpau_decoder_select="h264_decoder"
2625 h264_vdpau_hwaccel_deps="vdpau"
2626 h264_vdpau_hwaccel_select="h264_decoder"
2627 h264_videotoolbox_hwaccel_deps="videotoolbox"
2628 h264_videotoolbox_hwaccel_select="h264_decoder"
2629 hevc_cuvid_hwaccel_deps="cuda cuvid"
2630 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2631 hevc_d3d11va_hwaccel_select="hevc_decoder"
2632 hevc_mediacodec_decoder_deps="mediacodec"
2633 hevc_mediacodec_hwaccel_deps="mediacodec"
2634 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2635 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2636 hevc_dxva2_hwaccel_select="hevc_decoder"
2637 hevc_qsv_hwaccel_deps="libmfx"
2638 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2639 hevc_vaapi_hwaccel_select="hevc_decoder"
2640 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2641 hevc_vdpau_hwaccel_select="hevc_decoder"
2642 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2643 mpeg_vdpau_decoder_deps="vdpau"
2644 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2645 mpeg_xvmc_hwaccel_deps="xvmc"
2646 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2647 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2648 mpeg1_vdpau_decoder_deps="vdpau"
2649 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2650 mpeg1_vdpau_hwaccel_deps="vdpau"
2651 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2652 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2653 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2654 mpeg1_xvmc_hwaccel_deps="xvmc"
2655 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2656 mpeg2_crystalhd_decoder_select="crystalhd"
2657 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2658 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2659 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2660 mpeg2_dxva2_hwaccel_deps="dxva2"
2661 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2662 mpeg2_mmal_decoder_deps="mmal"
2663 mpeg2_mmal_decoder_select="mmal"
2664 mpeg2_mmal_hwaccel_deps="mmal"
2665 mpeg2_qsv_hwaccel_deps="libmfx"
2666 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2667 mpeg2_vaapi_hwaccel_deps="vaapi"
2668 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2669 mpeg2_vdpau_hwaccel_deps="vdpau"
2670 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2671 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2672 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2673 mpeg2_xvmc_hwaccel_deps="xvmc"
2674 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2675 mpeg4_crystalhd_decoder_select="crystalhd"
2676 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2677 mpeg4_mediacodec_decoder_deps="mediacodec"
2678 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2679 mpeg4_mmal_decoder_deps="mmal"
2680 mpeg4_mmal_decoder_select="mmal"
2681 mpeg4_mmal_hwaccel_deps="mmal"
2682 mpeg4_omx_encoder_deps="omx"
2683 mpeg4_vaapi_hwaccel_deps="vaapi"
2684 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2685 mpeg4_vdpau_decoder_deps="vdpau"
2686 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2687 mpeg4_vdpau_hwaccel_deps="vdpau"
2688 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2689 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2690 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2691 msmpeg4_crystalhd_decoder_select="crystalhd"
2692 vc1_crystalhd_decoder_select="crystalhd"
2693 vc1_cuvid_hwaccel_deps="cuda cuvid"
2694 vc1_d3d11va_hwaccel_deps="d3d11va"
2695 vc1_d3d11va_hwaccel_select="vc1_decoder"
2696 vc1_dxva2_hwaccel_deps="dxva2"
2697 vc1_dxva2_hwaccel_select="vc1_decoder"
2698 vc1_mmal_decoder_deps="mmal"
2699 vc1_mmal_decoder_select="mmal"
2700 vc1_mmal_hwaccel_deps="mmal"
2701 vc1_qsv_hwaccel_deps="libmfx"
2702 vc1_qsv_hwaccel_select="qsvdec_vc1"
2703 vc1_vaapi_hwaccel_deps="vaapi"
2704 vc1_vaapi_hwaccel_select="vc1_decoder"
2705 vc1_vdpau_decoder_deps="vdpau"
2706 vc1_vdpau_decoder_select="vc1_decoder"
2707 vc1_vdpau_hwaccel_deps="vdpau"
2708 vc1_vdpau_hwaccel_select="vc1_decoder"
2709 vp8_cuvid_hwaccel_deps="cuda cuvid"
2710 vp9_cuvid_hwaccel_deps="cuda cuvid"
2711 vp8_mediacodec_decoder_deps="mediacodec"
2712 vp8_mediacodec_hwaccel_deps="mediacodec"
2713 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2714 vp9_d3d11va_hwaccel_select="vp9_decoder"
2715 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2716 vp9_dxva2_hwaccel_select="vp9_decoder"
2717 vp9_mediacodec_decoder_deps="mediacodec"
2718 vp9_mediacodec_hwaccel_deps="mediacodec"
2719 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2720 vp9_vaapi_hwaccel_select="vp9_decoder"
2721 wmv3_crystalhd_decoder_select="crystalhd"
2722 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2723 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2724 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2725 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2726 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2727
2728 # hardware-accelerated codecs
2729 omx_deps="dlopen pthreads"
2730 omx_extralibs='$ldl'
2731 qsvdec_select="qsv"
2732 qsvenc_select="qsv"
2733 vaapi_encode_deps="vaapi"
2734
2735 hwupload_cuda_filter_deps="cuda"
2736 scale_npp_filter_deps="cuda libnpp"
2737
2738 nvenc_deps="cuda"
2739 nvenc_deps_any="dlopen LoadLibrary"
2740 nvenc_encoder_deps="nvenc"
2741 h264_cuvid_decoder_deps="cuda cuvid"
2742 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2743 h264_nvenc_encoder_deps="nvenc"
2744 h264_qsv_decoder_deps="libmfx"
2745 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2746 h264_qsv_encoder_deps="libmfx"
2747 h264_qsv_encoder_select="qsvenc"
2748 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2749 h264_vaapi_encoder_select="vaapi_encode golomb"
2750
2751 hevc_cuvid_decoder_deps="cuda cuvid"
2752 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2753 hevc_nvenc_encoder_deps="nvenc"
2754 hevc_qsv_decoder_deps="libmfx"
2755 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2756 hevc_qsv_encoder_deps="libmfx"
2757 hevc_qsv_encoder_select="qsvenc"
2758 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2759 hevc_vaapi_encoder_select="vaapi_encode golomb"
2760 mjpeg_cuvid_decoder_deps="cuda cuvid"
2761 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2762 mpeg1_cuvid_decoder_deps="cuda cuvid"
2763 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2764 mpeg2_cuvid_decoder_deps="cuda cuvid"
2765 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2766 mpeg2_qsv_decoder_deps="libmfx"
2767 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2768 mpeg2_qsv_encoder_deps="libmfx"
2769 mpeg2_qsv_encoder_select="qsvenc"
2770 mpeg4_cuvid_decoder_deps="cuda cuvid"
2771 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2772 nvenc_h264_encoder_deps="nvenc"
2773 nvenc_hevc_encoder_deps="nvenc"
2774
2775 vc1_cuvid_decoder_deps="cuda cuvid"
2776 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2777 vp8_cuvid_decoder_deps="cuda cuvid"
2778 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2779 vp9_cuvid_decoder_deps="cuda cuvid"
2780 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2781
2782 # parsers
2783 h264_parser_select="golomb h264dsp h264parse"
2784 hevc_parser_select="golomb"
2785 mpegvideo_parser_select="mpegvideo"
2786 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2787 vc1_parser_select="vc1dsp"
2788
2789 # bitstream_filters
2790 mjpeg2jpeg_bsf_select="jpegtables"
2791
2792 # external libraries
2793 aac_at_decoder_deps="audiotoolbox"
2794 ac3_at_decoder_deps="audiotoolbox"
2795 ac3_at_decoder_select="ac3_parser"
2796 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2797 alac_at_decoder_deps="audiotoolbox"
2798 amr_nb_at_decoder_deps="audiotoolbox"
2799 avisynth_deps_any="dlopen LoadLibrary"
2800 avisynth_demuxer_deps="avisynth"
2801 avisynth_demuxer_select="riffdec"
2802 eac3_at_decoder_deps="audiotoolbox"
2803 eac3_at_decoder_select="ac3_parser"
2804 gsm_ms_at_decoder_deps="audiotoolbox"
2805 ilbc_at_decoder_deps="audiotoolbox"
2806 mp1_at_decoder_deps="audiotoolbox"
2807 mp2_at_decoder_deps="audiotoolbox"
2808 mp3_at_decoder_deps="audiotoolbox"
2809 pcm_alaw_at_decoder_deps="audiotoolbox"
2810 pcm_mulaw_at_decoder_deps="audiotoolbox"
2811 qdmc_at_decoder_deps="audiotoolbox"
2812 qdm2_at_decoder_deps="audiotoolbox"
2813 aac_at_encoder_deps="audiotoolbox"
2814 aac_at_encoder_select="audio_frame_queue"
2815 alac_at_encoder_deps="audiotoolbox"
2816 alac_at_encoder_select="audio_frame_queue"
2817 ilbc_at_encoder_deps="audiotoolbox"
2818 ilbc_at_encoder_select="audio_frame_queue"
2819 pcm_alaw_at_encoder_deps="audiotoolbox"
2820 pcm_alaw_at_encoder_select="audio_frame_queue"
2821 pcm_mulaw_at_encoder_deps="audiotoolbox"
2822 pcm_mulaw_at_encoder_select="audio_frame_queue"
2823 chromaprint_muxer_deps="chromaprint"
2824 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2825 libcelt_decoder_deps="libcelt"
2826 libfdk_aac_decoder_deps="libfdk_aac"
2827 libfdk_aac_encoder_deps="libfdk_aac"
2828 libfdk_aac_encoder_select="audio_frame_queue"
2829 libgme_demuxer_deps="libgme"
2830 libgsm_decoder_deps="libgsm"
2831 libgsm_encoder_deps="libgsm"
2832 libgsm_ms_decoder_deps="libgsm"
2833 libgsm_ms_encoder_deps="libgsm"
2834 libilbc_decoder_deps="libilbc"
2835 libilbc_encoder_deps="libilbc"
2836 libkvazaar_encoder_deps="libkvazaar"
2837 libmodplug_demuxer_deps="libmodplug"
2838 libmp3lame_encoder_deps="libmp3lame"
2839 libmp3lame_encoder_select="audio_frame_queue"
2840 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2841 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2842 libopencore_amrnb_encoder_select="audio_frame_queue"
2843 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2844 libopenh264_decoder_deps="libopenh264"
2845 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2846 libopenh264_encoder_deps="libopenh264"
2847 libopenjpeg_decoder_deps="libopenjpeg"
2848 libopenjpeg_encoder_deps="libopenjpeg"
2849 libopenmpt_demuxer_deps="libopenmpt"
2850 libopus_decoder_deps="libopus"
2851 libopus_encoder_deps="libopus"
2852 libopus_encoder_select="audio_frame_queue"
2853 libschroedinger_decoder_deps="libschroedinger"
2854 libschroedinger_encoder_deps="libschroedinger"
2855 libshine_encoder_deps="libshine"
2856 libshine_encoder_select="audio_frame_queue"
2857 libspeex_decoder_deps="libspeex"
2858 libspeex_encoder_deps="libspeex"
2859 libspeex_encoder_select="audio_frame_queue"
2860 libtheora_encoder_deps="libtheora"
2861 libtwolame_encoder_deps="libtwolame"
2862 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2863 libvorbis_decoder_deps="libvorbis"
2864 libvorbis_encoder_deps="libvorbis"
2865 libvorbis_encoder_select="audio_frame_queue"
2866 libvpx_vp8_decoder_deps="libvpx"
2867 libvpx_vp8_encoder_deps="libvpx"
2868 libvpx_vp9_decoder_deps="libvpx"
2869 libvpx_vp9_encoder_deps="libvpx"
2870 libwavpack_encoder_deps="libwavpack"
2871 libwebp_encoder_deps="libwebp"
2872 libwebp_anim_encoder_deps="libwebp"
2873 libx262_encoder_deps="libx262"
2874 libx264_encoder_deps="libx264"
2875 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2876 libx264rgb_encoder_select="libx264_encoder"
2877 libx265_encoder_deps="libx265"
2878 libxavs_encoder_deps="libxavs"
2879 libxvid_encoder_deps="libxvid"
2880 libzvbi_teletext_decoder_deps="libzvbi"
2881 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2882 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2883 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2884 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2885 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2886
2887 # demuxers / muxers
2888 ac3_demuxer_select="ac3_parser"
2889 aiff_muxer_select="iso_media"
2890 asf_demuxer_select="riffdec"
2891 asf_o_demuxer_select="riffdec"
2892 asf_muxer_select="riffenc"
2893 asf_stream_muxer_select="asf_muxer"
2894 avi_demuxer_select="iso_media riffdec exif"
2895 avi_muxer_select="riffenc"
2896 caf_demuxer_select="iso_media riffdec"
2897 caf_muxer_select="iso_media"
2898 dash_muxer_select="mp4_muxer"
2899 dirac_demuxer_select="dirac_parser"
2900 dts_demuxer_select="dca_parser"
2901 dtshd_demuxer_select="dca_parser"
2902 dv_demuxer_select="dvprofile"
2903 dv_muxer_select="dvprofile"
2904 dxa_demuxer_select="riffdec"
2905 eac3_demuxer_select="ac3_parser"
2906 f4v_muxer_select="mov_muxer"
2907 fifo_muxer_deps="threads"
2908 flac_demuxer_select="flac_parser"
2909 hds_muxer_select="flv_muxer"
2910 hls_muxer_select="mpegts_muxer"
2911 image2_alias_pix_demuxer_select="image2_demuxer"
2912 image2_brender_pix_demuxer_select="image2_demuxer"
2913 ipod_muxer_select="mov_muxer"
2914 ismv_muxer_select="mov_muxer"
2915 libnut_demuxer_deps="libnut"
2916 libnut_muxer_deps="libnut"
2917 matroska_audio_muxer_select="matroska_muxer"
2918 matroska_demuxer_select="iso_media riffdec"
2919 matroska_demuxer_suggest="bzlib lzo zlib"
2920 matroska_muxer_select="iso_media riffenc"
2921 mmf_muxer_select="riffenc"
2922 mov_demuxer_select="iso_media riffdec"
2923 mov_demuxer_suggest="zlib"
2924 mov_muxer_select="iso_media riffenc rtpenc_chain"
2925 mp3_demuxer_select="mpegaudio_parser"
2926 mp4_muxer_select="mov_muxer"
2927 mpegts_demuxer_select="iso_media"
2928 mpegts_muxer_select="adts_muxer latm_muxer"
2929 mpegtsraw_demuxer_select="mpegts_demuxer"
2930 mxf_d10_muxer_select="mxf_muxer"
2931 mxf_opatom_muxer_select="mxf_muxer"
2932 nut_muxer_select="riffenc"
2933 nuv_demuxer_select="riffdec"
2934 oga_muxer_select="ogg_muxer"
2935 ogg_demuxer_select="dirac_parse"
2936 ogv_muxer_select="ogg_muxer"
2937 opus_muxer_select="ogg_muxer"
2938 psp_muxer_select="mov_muxer"
2939 rtp_demuxer_select="sdp_demuxer"
2940 rtp_muxer_select="golomb"
2941 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2942 rtsp_demuxer_select="http_protocol rtpdec"
2943 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2944 sap_demuxer_select="sdp_demuxer"
2945 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2946 sdp_demuxer_select="rtpdec"
2947 smoothstreaming_muxer_select="ismv_muxer"
2948 spdif_muxer_select="aac_parser"
2949 spx_muxer_select="ogg_muxer"
2950 swf_demuxer_suggest="zlib"
2951 tak_demuxer_select="tak_parser"
2952 tg2_muxer_select="mov_muxer"
2953 tgp_muxer_select="mov_muxer"
2954 vobsub_demuxer_select="mpegps_demuxer"
2955 w64_demuxer_select="wav_demuxer"
2956 w64_muxer_select="wav_muxer"
2957 wav_demuxer_select="riffdec"
2958 wav_muxer_select="riffenc"
2959 webm_muxer_select="iso_media riffenc"
2960 webm_dash_manifest_demuxer_select="matroska_demuxer"
2961 wtv_demuxer_select="mpegts_demuxer riffdec"
2962 wtv_muxer_select="mpegts_muxer riffenc"
2963 xmv_demuxer_select="riffdec"
2964 xwma_demuxer_select="riffdec"
2965
2966 # indevs / outdevs
2967 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2968 alsa_outdev_deps="alsa_asoundlib_h"
2969 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2970 avfoundation_indev_select="avfoundation"
2971 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2972 caca_outdev_deps="libcaca"
2973 decklink_indev_deps="decklink pthreads"
2974 decklink_indev_extralibs="-lstdc++"
2975 decklink_outdev_deps="decklink pthreads"
2976 decklink_outdev_extralibs="-lstdc++"
2977 dshow_indev_deps="IBaseFilter"
2978 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2979 dv1394_indev_deps="dv1394"
2980 dv1394_indev_select="dv_demuxer"
2981 fbdev_indev_deps="linux_fb_h"
2982 fbdev_outdev_deps="linux_fb_h"
2983 gdigrab_indev_deps="CreateDIBSection"
2984 gdigrab_indev_extralibs="-lgdi32"
2985 gdigrab_indev_select="bmp_decoder"
2986 iec61883_indev_deps="libiec61883"
2987 jack_indev_deps="jack_jack_h"
2988 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2989 lavfi_indev_deps="avfilter"
2990 libcdio_indev_deps="libcdio"
2991 libdc1394_indev_deps="libdc1394"
2992 libv4l2_indev_deps="libv4l2"
2993 openal_indev_deps="openal"
2994 opengl_outdev_deps="opengl"
2995 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2996 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2997 pulse_indev_deps="libpulse"
2998 pulse_outdev_deps="libpulse"
2999 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3000 qtkit_indev_select="qtkit"
3001 sdl2_outdev_deps="sdl2"
3002 sndio_indev_deps="sndio_h"
3003 sndio_outdev_deps="sndio_h"
3004 v4l_indev_deps="linux_videodev_h"
3005 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3006 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3007 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3008 vfwcap_indev_extralibs="-lavicap32"
3009 x11grab_indev_deps="x11grab"
3010 x11grab_xcb_indev_deps="libxcb"
3011 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3012 xv_outdev_extralibs="-lXv -lX11 -lXext"
3013
3014 # protocols
3015 async_protocol_deps="threads"
3016 bluray_protocol_deps="libbluray"
3017 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3018 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3019 ffrtmpcrypt_protocol_select="tcp_protocol"
3020 ffrtmphttp_protocol_deps="!librtmp_protocol"
3021 ffrtmphttp_protocol_select="http_protocol"
3022 ftp_protocol_select="tcp_protocol"
3023 gopher_protocol_select="network"
3024 http_protocol_select="tcp_protocol"
3025 httpproxy_protocol_select="tcp_protocol"
3026 https_protocol_select="tls_protocol"
3027 icecast_protocol_select="http_protocol"
3028 librtmp_protocol_deps="librtmp"
3029 librtmpe_protocol_deps="librtmp"
3030 librtmps_protocol_deps="librtmp"
3031 librtmpt_protocol_deps="librtmp"
3032 librtmpte_protocol_deps="librtmp"
3033 libsmbclient_protocol_deps="libsmbclient gplv3"
3034 libssh_protocol_deps="libssh"
3035 mmsh_protocol_select="http_protocol"
3036 mmst_protocol_select="network"
3037 rtmp_protocol_deps="!librtmp_protocol"
3038 rtmp_protocol_select="tcp_protocol"
3039 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3040 rtmps_protocol_deps="!librtmp_protocol"
3041 rtmps_protocol_select="tls_protocol"
3042 rtmpt_protocol_select="ffrtmphttp_protocol"
3043 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3044 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3045 rtp_protocol_select="udp_protocol"
3046 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3047 sctp_protocol_select="network"
3048 srtp_protocol_select="rtp_protocol srtp"
3049 tcp_protocol_select="network"
3050 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3051 tls_gnutls_protocol_select="tcp_protocol"
3052 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3053 tls_openssl_protocol_select="tcp_protocol"
3054 tls_schannel_protocol_deps="schannel"
3055 tls_schannel_protocol_select="tcp_protocol"
3056 tls_securetransport_protocol_deps="securetransport"
3057 tls_securetransport_protocol_select="tcp_protocol"
3058 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3059 udp_protocol_select="network"
3060 udplite_protocol_select="network"
3061 unix_protocol_deps="sys_un_h"
3062 unix_protocol_select="network"
3063
3064 # filters
3065 afftfilt_filter_deps="avcodec"
3066 afftfilt_filter_select="fft"
3067 amovie_filter_deps="avcodec avformat"
3068 aresample_filter_deps="swresample"
3069 ass_filter_deps="libass"
3070 asyncts_filter_deps="avresample"
3071 atempo_filter_deps="avcodec"
3072 atempo_filter_select="rdft"
3073 azmq_filter_deps="libzmq"
3074 blackframe_filter_deps="gpl"
3075 boxblur_filter_deps="gpl"
3076 bs2b_filter_deps="libbs2b"
3077 colormatrix_filter_deps="gpl"
3078 cover_rect_filter_deps="avcodec avformat gpl"
3079 cropdetect_filter_deps="gpl"
3080 delogo_filter_deps="gpl"
3081 deshake_filter_select="pixelutils"
3082 drawtext_filter_deps="libfreetype"
3083 eq_filter_deps="gpl"
3084 fftfilt_filter_deps="avcodec"
3085 fftfilt_filter_select="rdft"
3086 find_rect_filter_deps="avcodec avformat gpl"
3087 firequalizer_filter_deps="avcodec"
3088 firequalizer_filter_select="rdft"
3089 flite_filter_deps="libflite"
3090 framerate_filter_select="pixelutils"
3091 frei0r_filter_deps="frei0r dlopen"
3092 frei0r_src_filter_deps="frei0r dlopen"
3093 fspp_filter_deps="gpl"
3094 geq_filter_deps="gpl"
3095 histeq_filter_deps="gpl"
3096 hqdn3d_filter_deps="gpl"
3097 interlace_filter_deps="gpl"
3098 kerndeint_filter_deps="gpl"
3099 ladspa_filter_deps="ladspa dlopen"
3100 mcdeint_filter_deps="avcodec gpl"
3101 movie_filter_deps="avcodec avformat"
3102 mpdecimate_filter_deps="gpl"
3103 mpdecimate_filter_select="pixelutils"
3104 mptestsrc_filter_deps="gpl"
3105 negate_filter_deps="lut_filter"
3106 nnedi_filter_deps="gpl"
3107 ocr_filter_deps="libtesseract"
3108 ocv_filter_deps="libopencv"
3109 owdenoise_filter_deps="gpl"
3110 pan_filter_deps="swresample"
3111 perspective_filter_deps="gpl"
3112 phase_filter_deps="gpl"
3113 pp7_filter_deps="gpl"
3114 pp_filter_deps="gpl postproc"
3115 pullup_filter_deps="gpl"
3116 removelogo_filter_deps="avcodec avformat swscale"
3117 repeatfields_filter_deps="gpl"
3118 resample_filter_deps="avresample"
3119 rubberband_filter_deps="librubberband"
3120 sab_filter_deps="gpl swscale"
3121 scale2ref_filter_deps="swscale"
3122 scale_filter_deps="swscale"
3123 select_filter_select="pixelutils"
3124 showcqt_filter_deps="avcodec avformat swscale"
3125 showcqt_filter_select="fft"
3126 showfreqs_filter_deps="avcodec"
3127 showfreqs_filter_select="fft"
3128 showspectrum_filter_deps="avcodec"
3129 showspectrum_filter_select="fft"
3130 showspectrumpic_filter_deps="avcodec"
3131 showspectrumpic_filter_select="fft"
3132 smartblur_filter_deps="gpl swscale"
3133 sofalizer_filter_deps="netcdf avcodec"
3134 sofalizer_filter_select="fft"
3135 spectrumsynth_filter_deps="avcodec"
3136 spectrumsynth_filter_select="fft"
3137 spp_filter_deps="gpl avcodec"
3138 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3139 stereo3d_filter_deps="gpl"
3140 subtitles_filter_deps="avformat avcodec libass"
3141 super2xsai_filter_deps="gpl"
3142 pixfmts_super2xsai_test_deps="super2xsai_filter"
3143 tinterlace_filter_deps="gpl"
3144 tinterlace_merge_test_deps="tinterlace_filter"
3145 tinterlace_pad_test_deps="tinterlace_filter"
3146 uspp_filter_deps="gpl avcodec"
3147 vaguedenoiser_filter_deps="gpl"
3148 vidstabdetect_filter_deps="libvidstab"
3149 vidstabtransform_filter_deps="libvidstab"
3150 zmq_filter_deps="libzmq"
3151 zoompan_filter_deps="swscale"
3152 zscale_filter_deps="libzimg"
3153 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3154
3155 # examples
3156 avio_dir_cmd_deps="avformat avutil"
3157 avio_reading_deps="avformat avcodec avutil"
3158 decoding_encoding_example_deps="avcodec avformat avutil"
3159 demuxing_decoding_example_deps="avcodec avformat avutil"
3160 extract_mvs_example_deps="avcodec avformat avutil"
3161 filter_audio_example_deps="avfilter avutil"
3162 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3163 filtering_video_example_deps="avfilter avcodec avformat avutil"
3164 http_multiclient_example_deps="avformat avutil fork"
3165 metadata_example_deps="avformat avutil"
3166 muxing_example_deps="avcodec avformat avutil swscale"
3167 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3168 remuxing_example_deps="avcodec avformat avutil"
3169 resampling_audio_example_deps="avutil swresample"
3170 scaling_video_example_deps="avutil swscale"
3171 transcode_aac_example_deps="avcodec avformat swresample"
3172 transcoding_example_deps="avfilter avcodec avformat avutil"
3173
3174 # libraries, in linking order
3175 avcodec_deps="avutil"
3176 avdevice_deps="avformat avcodec avutil"
3177 avfilter_deps="avutil"
3178 avformat_deps="avcodec avutil"
3179 avresample_deps="avutil"
3180 postproc_deps="avutil gpl"
3181 swresample_deps="avutil"
3182 swscale_deps="avutil"
3183
3184 # programs
3185 ffmpeg_deps="avcodec avfilter avformat swresample"
3186 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3187                null_filter
3188                setpts_filter trim_filter"
3189 ffplay_deps="avcodec avformat swscale swresample sdl2"
3190 ffplay_libs='$sdl2_libs'
3191 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3192 ffprobe_deps="avcodec avformat"
3193 ffserver_deps="avformat fork sarestart"
3194 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3195
3196 # documentation
3197 podpages_deps="perl"
3198 manpages_deps="perl pod2man"
3199 htmlpages_deps="perl"
3200 htmlpages_deps_any="makeinfo_html texi2html"
3201 txtpages_deps="perl makeinfo"
3202 doc_deps_any="manpages htmlpages podpages txtpages"
3203
3204 # default parameters
3205
3206 logfile="config.log"
3207
3208 # installation paths
3209 prefix_default="/usr/local"
3210 bindir_default='${prefix}/bin'
3211 datadir_default='${prefix}/share/ffmpeg'
3212 docdir_default='${prefix}/share/doc/ffmpeg'
3213 incdir_default='${prefix}/include'
3214 libdir_default='${prefix}/lib'
3215 mandir_default='${prefix}/share/man'
3216
3217 # toolchain
3218 ar_default="ar"
3219 cc_default="gcc"
3220 cxx_default="g++"
3221 host_cc_default="gcc"
3222 cp_f="cp -f"
3223 doxygen_default="doxygen"
3224 install="install"
3225 ln_s_default="ln -s -f"
3226 nm_default="nm -g"
3227 objformat="elf"
3228 pkg_config_default=pkg-config
3229 ranlib_default="ranlib"
3230 strip_default="strip"
3231 version_script='--version-script'
3232 yasmexe_default="yasm"
3233 windres_default="windres"
3234
3235 # OS
3236 target_os_default=$(tolower $(uname -s))
3237 host_os=$target_os_default
3238
3239 # machine
3240 if test "$target_os_default" = aix; then
3241     arch_default=$(uname -p)
3242     strip_default="strip -X32_64"
3243 else
3244     arch_default=$(uname -m)
3245 fi
3246 cpu="generic"
3247 intrinsics="none"
3248
3249 # configurable options
3250 enable $PROGRAM_LIST
3251 enable $DOCUMENT_LIST
3252 enable $EXAMPLE_LIST
3253 enable $(filter_out avresample $LIBRARY_LIST)
3254 enable stripping
3255
3256 enable asm
3257 enable debug
3258 enable doc
3259 enable faan faandct faanidct
3260 enable optimizations
3261 enable runtime_cpudetect
3262 enable safe_bitstream_reader
3263 enable static
3264 enable swscale_alpha
3265 enable valgrind_backtrace
3266
3267 sws_max_filter_size_default=256
3268 set_default sws_max_filter_size
3269
3270 # build settings
3271 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3272 LIBPREF="lib"
3273 LIBSUF=".a"
3274 FULLNAME='$(NAME)$(BUILDSUF)'
3275 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3276 SLIBPREF="lib"
3277 SLIBSUF=".so"
3278 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3279 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3280 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3281 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3282 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3283 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3284 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3285
3286 asflags_filter=echo
3287 cflags_filter=echo
3288 ldflags_filter=echo
3289
3290 AS_C='-c'
3291 AS_O='-o $@'
3292 CC_C='-c'
3293 CC_E='-E -o $@'
3294 CC_O='-o $@'
3295 CXX_C='-c'
3296 CXX_O='-o $@'
3297 OBJCC_C='-c'
3298 OBJCC_E='-E -o $@'
3299 OBJCC_O='-o $@'
3300 LD_O='-o $@'
3301 LD_LIB='-l%'
3302 LD_PATH='-L'
3303 HOSTCC_C='-c'
3304 HOSTCC_E='-E -o $@'
3305 HOSTCC_O='-o $@'
3306 HOSTLD_O='-o $@'
3307
3308 host_libs='-lm'
3309 host_cflags_filter=echo
3310 host_ldflags_filter=echo
3311
3312 target_path='$(CURDIR)'
3313
3314 # since the object filename is not given with the -MM flag, the compiler
3315 # is only able to print the basename, and we must add the path ourselves
3316 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3317 DEPFLAGS='-MM'
3318
3319 # find source path
3320 if test -f configure; then
3321     source_path=.
3322 else
3323     source_path=$(cd $(dirname "$0"); pwd)
3324     case "$source_path" in
3325         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3326     esac
3327     test -e "$source_path/config.h" &&
3328         die "Out of tree builds are impossible with config.h in source dir."
3329 fi
3330
3331 for v in "$@"; do
3332     r=${v#*=}
3333     l=${v%"$r"}
3334     r=$(sh_quote "$r")
3335     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3336 done
3337
3338 find_things(){
3339     thing=$1
3340     pattern=$2
3341     file=$source_path/$3
3342     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3343 }
3344
3345 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3346 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3347 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3348 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3349 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3350 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3351 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3352 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3353 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3354
3355 find_things_extern(){
3356     thing=$1
3357     pattern=$2
3358     file=$source_path/$3
3359     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3360 }
3361
3362 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3363 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3364
3365 ALL_COMPONENTS="
3366     $BSF_LIST
3367     $DECODER_LIST
3368     $DEMUXER_LIST
3369     $ENCODER_LIST
3370     $FILTER_LIST
3371     $HWACCEL_LIST
3372     $INDEV_LIST
3373     $MUXER_LIST
3374     $OUTDEV_LIST
3375     $PARSER_LIST
3376     $PROTOCOL_LIST
3377 "
3378
3379 for n in $COMPONENT_LIST; do
3380     v=$(toupper ${n%s})_LIST
3381     eval enable \$$v
3382     eval ${n}_if_any="\$$v"
3383 done
3384
3385 enable $ARCH_EXT_LIST
3386
3387 die_unknown(){
3388     echo "Unknown option \"$1\"."
3389     echo "See $0 --help for available options."
3390     exit 1
3391 }
3392
3393 print_in_columns() {
3394     cols=$(expr $ncols / 24)
3395     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3396 }
3397
3398 show_list() {
3399     suffix=_$1
3400     shift
3401     echo $* | sed s/$suffix//g | print_in_columns
3402     exit 0
3403 }
3404
3405 rand_list(){
3406     IFS=', '
3407     set -- $*
3408     unset IFS
3409     for thing; do
3410         comp=${thing%:*}
3411         prob=${thing#$comp}
3412         prob=${prob#:}
3413         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3414         echo "prob ${prob:-0.5}"
3415         printf '%s\n' $comp
3416     done
3417 }
3418
3419 do_random(){
3420     action=$1
3421     shift
3422     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3423     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3424 }
3425
3426 for opt do
3427     optval="${opt#*=}"
3428     case "$opt" in
3429         --extra-ldflags=*)
3430             add_ldflags $optval
3431         ;;
3432         --extra-ldexeflags=*)
3433             add_ldexeflags $optval
3434         ;;
3435         --extra-ldlibflags=*)
3436             add_ldlibflags $optval
3437         ;;
3438         --extra-libs=*)
3439             add_extralibs $optval
3440         ;;
3441         --disable-devices)
3442             disable $INDEV_LIST $OUTDEV_LIST
3443         ;;
3444         --enable-debug=*)
3445             debuglevel="$optval"
3446         ;;
3447         --disable-programs)
3448             disable $PROGRAM_LIST
3449         ;;
3450         --disable-everything)
3451             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3452         ;;
3453         --disable-all)
3454             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3455             disable $LIBRARY_LIST $PROGRAM_LIST doc
3456             enable avutil
3457         ;;
3458         --enable-random|--disable-random)
3459             action=${opt%%-random}
3460             do_random ${action#--} $COMPONENT_LIST
3461         ;;
3462         --enable-random=*|--disable-random=*)
3463             action=${opt%%-random=*}
3464             do_random ${action#--} $optval
3465         ;;
3466         --enable-*=*|--disable-*=*)
3467             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3468             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3469             eval list=\$$(toupper $thing)_LIST
3470             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3471             list=$(filter "$name" $list)
3472             [ "$list" = "" ] && warn "Option $opt did not match anything"
3473             $action $list
3474         ;;
3475         --enable-?*|--disable-?*)
3476             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3477             if is_in $option $COMPONENT_LIST; then
3478                 test $action = disable && action=unset
3479                 eval $action \$$(toupper ${option%s})_LIST
3480             elif is_in $option $CMDLINE_SELECT; then
3481                 $action $option
3482             else
3483                 die_unknown $opt
3484             fi
3485         ;;
3486         --list-*)
3487             NAME="${opt#--list-}"
3488             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3489             NAME=${NAME%s}
3490             eval show_list $NAME \$$(toupper $NAME)_LIST
3491         ;;
3492         --help|-h) show_help
3493         ;;
3494         --fatal-warnings) enable fatal_warnings
3495         ;;
3496         *)
3497             optname="${opt%%=*}"
3498             optname="${optname#--}"
3499             optname=$(echo "$optname" | sed 's/-/_/g')
3500             if is_in $optname $CMDLINE_SET; then
3501                 eval $optname='$optval'
3502             elif is_in $optname $CMDLINE_APPEND; then
3503                 append $optname "$optval"
3504             else
3505                 die_unknown $opt
3506             fi
3507         ;;
3508     esac
3509 done
3510
3511 for e in $env; do
3512     eval "export $e"
3513 done
3514
3515 # Mark specifically enabled, but normally autodetected libraries as requested.
3516 for lib in $AUTODETECT_LIBS; do
3517     enabled $lib && request $lib
3518 done
3519
3520 # Enable platform codecs by default.
3521 enable_weak audiotoolbox
3522
3523 # Enable hwaccels by default.
3524 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3525 enable_weak xlib
3526
3527 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3528
3529 disabled logging && logfile=/dev/null
3530
3531 # Disable all the library-specific components if the library itself
3532 # is disabled, see AVCODEC_LIST and following _LIST variables.
3533
3534 disable_components(){
3535     disabled ${1} && disable $(
3536         eval components="\$$(toupper ${1})_COMPONENTS"
3537         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3538     )
3539 }
3540
3541 map 'disable_components $v' $LIBRARY_LIST
3542
3543 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3544 set >> $logfile
3545
3546 test -n "$valgrind" && toolchain="valgrind-memcheck"
3547
3548 case "$toolchain" in
3549     *-asan)
3550         cc_default="${toolchain%-asan}"
3551         add_cflags  -fsanitize=address
3552         add_ldflags -fsanitize=address
3553     ;;
3554     *-msan)
3555         cc_default="${toolchain%-msan}"
3556         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3557         add_ldflags -fsanitize=memory
3558     ;;
3559     *-tsan)
3560         cc_default="${toolchain%-tsan}"
3561         add_cflags  -fsanitize=thread -fPIE
3562         add_ldflags -fsanitize=thread -pie
3563         case "$toolchain" in
3564             gcc-tsan)
3565                 add_cflags  -fPIC
3566                 add_ldflags -fPIC
3567                 ;;
3568         esac
3569     ;;
3570     *-usan)
3571         cc_default="${toolchain%-usan}"
3572         add_cflags  -fsanitize=undefined
3573         add_ldflags -fsanitize=undefined
3574     ;;
3575     valgrind-*)
3576         target_exec_default="valgrind"
3577         case "$toolchain" in
3578             valgrind-massif)
3579                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3580                 ;;
3581             valgrind-memcheck)
3582                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3583                 ;;
3584         esac
3585     ;;
3586     msvc)
3587         # Check whether the current MSVC version needs the C99 converter.
3588         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3589         # support enough of C99 to build ffmpeg. Default to the new
3590         # behaviour if the regexp was unable to match anything, since this
3591         # successfully parses the version number of existing supported
3592         # versions that require the converter (MSVC 2010 and 2012).
3593         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3594         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3595             cc_default="cl"
3596         else
3597             cc_default="c99wrap cl"
3598         fi
3599         ld_default="$source_path/compat/windows/mslink"
3600         nm_default="dumpbin -symbols"
3601         ar_default="lib"
3602         case "$arch" in
3603         arm*)
3604             as_default="armasm"
3605             ;;
3606         esac
3607         target_os_default="win32"
3608         # Use a relative path for TMPDIR. This makes sure all the
3609         # ffconf temp files are written with a relative path, avoiding
3610         # issues with msys/win32 path conversion for MSVC parameters
3611         # such as -Fo<file> or -out:<file>.
3612         TMPDIR=.
3613     ;;
3614     icl)
3615         cc_default="icl"
3616         ld_default="xilink"
3617         nm_default="dumpbin -symbols"
3618         ar_default="xilib"
3619         target_os_default="win32"
3620         TMPDIR=.
3621     ;;
3622     gcov)
3623         add_cflags  -fprofile-arcs -ftest-coverage
3624         add_ldflags -fprofile-arcs -ftest-coverage
3625     ;;
3626     llvm-cov)
3627         add_cflags -fprofile-arcs -ftest-coverage
3628         add_ldflags --coverage
3629     ;;
3630     hardened)
3631         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3632         add_cflags   -fno-strict-overflow -fstack-protector-all
3633         add_ldflags  -Wl,-z,relro -Wl,-z,now
3634         add_cflags   -fPIE
3635         add_ldexeflags -fPIE -pie
3636     ;;
3637     ?*)
3638         die "Unknown toolchain $toolchain"
3639     ;;
3640 esac
3641
3642 test -n "$cross_prefix" && enable cross_compile
3643
3644 if enabled cross_compile; then
3645     test -n "$arch" && test -n "$target_os" ||
3646         die "Must specify target arch and OS when cross-compiling"
3647 fi
3648
3649 ar_default="${cross_prefix}${ar_default}"
3650 cc_default="${cross_prefix}${cc_default}"
3651 cxx_default="${cross_prefix}${cxx_default}"
3652 nm_default="${cross_prefix}${nm_default}"
3653 pkg_config_default="${cross_prefix}${pkg_config_default}"
3654 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3655     ranlib_default="${cross_prefix}${ranlib_default} -D"
3656 else
3657     ranlib_default="${cross_prefix}${ranlib_default}"
3658 fi
3659 strip_default="${cross_prefix}${strip_default}"
3660 windres_default="${cross_prefix}${windres_default}"
3661
3662 sysinclude_default="${sysroot}/usr/include"
3663
3664 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3665     target_exec target_os yasmexe
3666 enabled cross_compile || host_cc_default=$cc
3667 set_default host_cc
3668
3669 pkg_config_fail_message=""
3670 if ! $pkg_config --version >/dev/null 2>&1; then
3671     warn "$pkg_config not found, library detection may fail."
3672     pkg_config=false
3673 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3674     pkg_config_fail_message="
3675 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3676 fi
3677
3678 if test $doxygen != $doxygen_default && \
3679   ! $doxygen --version >/dev/null 2>&1; then
3680     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3681 fi
3682
3683 exesuf() {
3684     case $1 in
3685         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3686     esac
3687 }
3688
3689 EXESUF=$(exesuf $target_os)
3690 HOSTEXESUF=$(exesuf $host_os)
3691
3692 # set temporary file name
3693 : ${TMPDIR:=$TEMPDIR}
3694 : ${TMPDIR:=$TMP}
3695 : ${TMPDIR:=/tmp}
3696
3697 if [ -n "$tempprefix" ] ; then
3698     mktemp(){
3699         echo $tempprefix.${HOSTNAME}.${UID}
3700     }
3701 elif ! check_cmd mktemp -u XXXXXX; then
3702     # simple replacement for missing mktemp
3703     # NOT SAFE FOR GENERAL USE
3704     mktemp(){
3705         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3706     }
3707 fi
3708
3709 tmpfile(){
3710     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3711         (set -C; exec > $tmp) 2>/dev/null ||
3712         die "Unable to create temporary file in $TMPDIR."
3713     append TMPFILES $tmp
3714     eval $1=$tmp
3715 }
3716
3717 trap 'rm -f -- $TMPFILES' EXIT
3718
3719 tmpfile TMPASM .asm
3720 tmpfile TMPC   .c
3721 tmpfile TMPCPP .cpp
3722 tmpfile TMPE   $EXESUF
3723 tmpfile TMPH   .h
3724 tmpfile TMPM   .m
3725 tmpfile TMPO   .o
3726 tmpfile TMPS   .S
3727 tmpfile TMPSH  .sh
3728 tmpfile TMPV   .ver
3729
3730 unset -f mktemp
3731
3732 chmod +x $TMPE
3733
3734 # make sure we can execute files in $TMPDIR
3735 cat > $TMPSH 2>> $logfile <<EOF
3736 #! /bin/sh
3737 EOF
3738 chmod +x $TMPSH >> $logfile 2>&1
3739 if ! $TMPSH >> $logfile 2>&1; then
3740     cat <<EOF
3741 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3742 variable to another directory and make sure that it is not mounted noexec.
3743 EOF
3744     die "Sanity test failed."
3745 fi
3746
3747 armasm_flags(){
3748     for flag; do
3749         case $flag in
3750             # Filter out MSVC cl.exe options from cflags that shouldn't
3751             # be passed to gas-preprocessor
3752             -M[TD]*)                                            ;;
3753             *)                  echo $flag                      ;;
3754         esac
3755    done
3756 }
3757
3758 ccc_flags(){
3759     for flag; do
3760         case $flag in
3761             -std=c99)           echo -c99                       ;;
3762             -mcpu=*)            echo -arch ${flag#*=}           ;;
3763             -mieee)             echo -ieee                      ;;
3764             -O*|-fast)          echo $flag                      ;;
3765             -fno-math-errno)    echo -assume nomath_errno       ;;
3766             -g)                 echo -g3                        ;;
3767             -Wall)              echo -msg_enable level2         ;;
3768             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3769             -Wl,*)              echo $flag                      ;;
3770             -f*|-W*)                                            ;;
3771             *)                  echo $flag                      ;;
3772         esac
3773    done
3774 }
3775
3776 cparser_flags(){
3777     for flag; do
3778         case $flag in
3779             -Wno-switch)             echo -Wno-switch-enum ;;
3780             -Wno-format-zero-length) ;;
3781             -Wdisabled-optimization) ;;
3782             -Wno-pointer-sign)       echo -Wno-other ;;
3783             *)                       echo $flag ;;
3784         esac
3785     done
3786 }
3787
3788 msvc_common_flags(){
3789     for flag; do
3790         case $flag in
3791             # In addition to specifying certain flags under the compiler
3792             # specific filters, they must be specified here as well or else the
3793             # generic catch all at the bottom will print the original flag.
3794             -Wall)                ;;
3795             -std=c99)             ;;
3796             # Common flags
3797             -fomit-frame-pointer) ;;
3798             -g)                   echo -Z7 ;;
3799             -fno-math-errno)      ;;
3800             -fno-common)          ;;
3801             -fno-signed-zeros)    ;;
3802             -fPIC)                ;;
3803             -mthumb)              ;;
3804             -march=*)             ;;
3805             -lz)                  echo zlib.lib ;;
3806             -lavifil32)           echo vfw32.lib ;;
3807             -lavicap32)           echo vfw32.lib user32.lib ;;
3808             -lx264)               echo libx264.lib ;;
3809             -l*)                  echo ${flag#-l}.lib ;;
3810             -LARGEADDRESSAWARE)   echo $flag ;;
3811             -L*)                  echo -libpath:${flag#-L} ;;
3812             *)                    echo $flag ;;
3813         esac
3814     done
3815 }
3816
3817 msvc_flags(){
3818     msvc_common_flags "$@"
3819     for flag; do
3820         case $flag in
3821             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3822                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3823                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3824                                        -wd4307 \
3825                                        -wd4273 -wd4554 -wd4701 ;;
3826         esac
3827     done
3828 }
3829
3830 icl_flags(){
3831     msvc_common_flags "$@"
3832     for flag; do
3833         case $flag in
3834             # Despite what Intel's documentation says -Wall, which is supported
3835             # on Windows, does enable remarks so disable them here.
3836             -Wall)                echo $flag -Qdiag-disable:remark ;;
3837             -std=c99)             echo -Qstd=c99 ;;
3838             -flto)                echo -ipo ;;
3839         esac
3840     done
3841 }
3842
3843 icc_flags(){
3844     for flag; do
3845         case $flag in
3846             -flto)                echo -ipo ;;
3847             *)                    echo $flag ;;
3848         esac
3849     done
3850 }
3851
3852 pgi_flags(){
3853     for flag; do
3854         case $flag in
3855             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3856             -fomit-frame-pointer) echo -Mnoframe ;;
3857             -g)                   echo -gopt ;;
3858             *)                    echo $flag ;;
3859         esac
3860     done
3861 }
3862
3863 suncc_flags(){
3864     for flag; do
3865         case $flag in
3866             -march=*|-mcpu=*)
3867                 case "${flag#*=}" in
3868                     native)                   echo -xtarget=native       ;;
3869                     v9|niagara)               echo -xarch=sparc          ;;
3870                     ultrasparc)               echo -xarch=sparcvis       ;;
3871                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3872                     i586|pentium)             echo -xchip=pentium        ;;
3873                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3874                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3875                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3876                     pentium4*)          echo -xtarget=pentium4           ;;
3877                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3878                     *-sse3)             echo -xarch=sse3                 ;;
3879                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3880                     bonnell)                   echo -xarch=ssse3         ;;
3881                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3882                     westmere)                  echo -xtarget=westmere    ;;
3883                     silvermont)                echo -xarch=sse4_2        ;;
3884                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3885                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3886                                                echo -xarch=avx           ;;
3887                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3888                     btver1)                    echo -xarch=amdsse4a      ;;
3889                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3890                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3891                     k8|opteron|athlon64|athlon-fx)
3892                                                echo -xarch=sse2a         ;;
3893                     athlon*)                   echo -xarch=pentium_proa  ;;
3894                 esac
3895                 ;;
3896             -std=c99)             echo -xc99              ;;
3897             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3898             -fPIC)                echo -KPIC -xcode=pic32 ;;
3899             -W*,*)                echo $flag              ;;
3900             -f*-*|-W*|-mimpure-text)                      ;;
3901             -shared)              echo -G                 ;;
3902             *)                    echo $flag              ;;
3903         esac
3904     done
3905 }
3906
3907 tms470_flags(){
3908     for flag; do
3909         case $flag in
3910             -march=*|-mcpu=*)
3911                 case "${flag#*=}" in
3912                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3913                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3914                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3915                     armv6*|arm11*)          echo -mv=6   ;;
3916                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3917                                             echo -mv=5e  ;;
3918                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3919                 esac
3920                 ;;
3921             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3922             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3923             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3924             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3925             -msoft-float)   echo --float_support=vfplib       ;;
3926             -O[0-3]|-mf=*)  echo $flag                        ;;
3927             -g)             echo -g -mn                       ;;
3928             -pds=*)         echo $flag                        ;;
3929             -D*|-I*)        echo $flag                        ;;
3930             --gcc|--abi=*)  echo $flag                        ;;
3931             -me)            echo $flag                        ;;
3932         esac
3933     done
3934 }
3935
3936 probe_cc(){
3937     pfx=$1
3938     _cc=$2
3939     first=$3
3940
3941     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3942     unset _ld_o _ldflags _ld_lib _ld_path
3943     unset _depflags _DEPCMD _DEPFLAGS
3944     _flags_filter=echo
3945
3946     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3947         true # no-op to avoid reading stdin in following checks
3948     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3949         _type=llvm_gcc
3950         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3951         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3952         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3953         _cflags_speed='-O3'
3954         _cflags_size='-Os'
3955     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3956         _type=gcc
3957         gcc_version=$($_cc --version | head -n1)
3958         gcc_basever=$($_cc -dumpversion)
3959         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3960         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3961         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3962         case $gcc_basever in
3963             2) ;;
3964             2.*) ;;
3965             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3966         esac
3967         if [ "$first" = true ]; then
3968             case $gcc_basever in
3969                 4.2*)
3970                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3971             esac
3972         fi
3973         _cflags_speed='-O3'
3974         _cflags_size='-Os'
3975     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3976         _type=icc
3977         _ident=$($_cc --version | head -n1)
3978         _depflags='-MMD'
3979         _cflags_speed='-O3'
3980         _cflags_size='-Os'
3981         _cflags_noopt='-O1'
3982         _flags_filter=icc_flags
3983     elif $_cc -v 2>&1 | grep -q xlc; then
3984         _type=xlc
3985         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3986         _cflags_speed='-O5'
3987         _cflags_size='-O5 -qcompact'
3988     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3989         _type=ccc
3990         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3991         _DEPFLAGS='-M'
3992         _cflags_speed='-fast'
3993         _cflags_size='-O1'
3994         _flags_filter=ccc_flags
3995     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3996         test -d "$sysroot" || die "No valid sysroot specified."
3997         _type=armcc
3998         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3999         armcc_conf="$PWD/armcc.conf"
4000         $_cc --arm_linux_configure                 \
4001              --arm_linux_config_file="$armcc_conf" \
4002              --configure_sysroot="$sysroot"        \
4003              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4004              die "Error creating armcc configuration file."
4005         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4006         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4007         as_default="${cross_prefix}gcc"
4008         _depflags='-MMD'
4009         _cflags_speed='-O3'
4010         _cflags_size='-Os'
4011     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4012         _type=tms470
4013         _ident=$($_cc -version | head -n1 | tr -s ' ')
4014         _flags='--gcc --abi=eabi -me'
4015         _cc_e='-ppl -fe=$@'
4016         _cc_o='-fe=$@'
4017         _depflags='-ppa -ppd=$(@:.o=.d)'
4018         _cflags_speed='-O3 -mf=5'
4019         _cflags_size='-O3 -mf=2'
4020         _flags_filter=tms470_flags
4021     elif $_cc -v 2>&1 | grep -q clang; then
4022         _type=clang
4023         _ident=$($_cc --version 2>/dev/null | head -n1)
4024         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4025         _cflags_speed='-O3'
4026         _cflags_size='-Os'
4027     elif $_cc -V 2>&1 | grep -q Sun; then
4028         _type=suncc
4029         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4030         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4031         _DEPFLAGS='-xM1 -xc99'
4032         _ldflags='-std=c99'
4033         _cflags_speed='-O5'
4034         _cflags_size='-O5 -xspace'
4035         _flags_filter=suncc_flags
4036     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4037         _type=pathscale
4038         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4039         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4040         _cflags_speed='-O2'
4041         _cflags_size='-Os'
4042         _flags_filter='filter_out -Wdisabled-optimization'
4043     elif $_cc -v 2>&1 | grep -q Open64; then
4044         _type=open64
4045         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4046         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4047         _cflags_speed='-O2'
4048         _cflags_size='-Os'
4049         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4050     elif $_cc -V 2>&1 | grep -q Portland; then
4051         _type=pgi
4052         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4053         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4054         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4055         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4056         _cflags_noopt="-O"
4057         _flags_filter=pgi_flags
4058     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4059         _type=armasm
4060         _ident=$($_cc | head -n1)
4061         # 4509: "This form of conditional instruction is deprecated"
4062         _flags="-nologo -ignore 4509"
4063         _flags_filter=armasm_flags
4064     elif $_cc 2>&1 | grep -q Intel; then
4065         _type=icl
4066         _ident=$($_cc 2>&1 | head -n1)
4067         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4068         # Not only is O3 broken on 13.x+ but it is slower on all previous
4069         # versions (tested) as well.
4070         _cflags_speed="-O2"
4071         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4072         if $_cc 2>&1 | grep -q Linker; then
4073             _ld_o='-out:$@'
4074         else
4075             _ld_o='-Fe$@'
4076         fi
4077         _cc_o='-Fo$@'
4078         _cc_e='-P'
4079         _flags_filter=icl_flags
4080         _ld_lib='lib%.a'
4081         _ld_path='-libpath:'
4082         # -Qdiag-error to make icl error when seeing certain unknown arguments
4083         _flags='-nologo -Qdiag-error:4044,10157'
4084         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4085         # with MSVC which enables it by default.
4086         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4087         disable stripping
4088     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4089         _type=msvc
4090         _ident=$($_cc 2>&1 | head -n1)
4091         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4092         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4093         _cflags_speed="-O2"
4094         _cflags_size="-O1"
4095         if $_cc -nologo- 2>&1 | grep -q Linker; then
4096             _ld_o='-out:$@'
4097         else
4098             _ld_o='-Fe$@'
4099         fi
4100         _cc_o='-Fo$@'
4101         _cc_e='-P -Fi$@'
4102         _flags_filter=msvc_flags
4103         _ld_lib='lib%.a'
4104         _ld_path='-libpath:'
4105         _flags='-nologo'
4106         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4107         disable stripping
4108     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4109         _type=cparser
4110         _ident=$($_cc --version | head -n1)
4111         _depflags='-MMD'
4112         _cflags_speed='-O4'
4113         _cflags_size='-O2'
4114         _flags_filter=cparser_flags
4115     fi
4116
4117     eval ${pfx}_type=\$_type
4118     eval ${pfx}_ident=\$_ident
4119 }
4120
4121 set_ccvars(){
4122     eval ${1}_C=\${_cc_c-\${${1}_C}}
4123     eval ${1}_E=\${_cc_e-\${${1}_E}}
4124     eval ${1}_O=\${_cc_o-\${${1}_O}}
4125
4126     if [ -n "$_depflags" ]; then
4127         eval ${1}_DEPFLAGS=\$_depflags
4128     else
4129         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4130         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4131         eval DEP${1}FLAGS=\$_flags
4132     fi
4133 }
4134
4135 probe_cc cc "$cc" "true"
4136 cflags_filter=$_flags_filter
4137 cflags_speed=$_cflags_speed
4138 cflags_size=$_cflags_size
4139 cflags_noopt=$_cflags_noopt
4140 add_cflags $_flags $_cflags
4141 cc_ldflags=$_ldflags
4142 set_ccvars CC
4143
4144 probe_cc hostcc "$host_cc"
4145 host_cflags_filter=$_flags_filter
4146 add_host_cflags  $_flags $_cflags
4147 set_ccvars HOSTCC
4148
4149 test -n "$cc_type" && enable $cc_type ||
4150     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4151
4152 : ${as_default:=$cc}
4153 : ${objcc_default:=$cc}
4154 : ${dep_cc_default:=$cc}
4155 : ${ld_default:=$cc}
4156 : ${host_ld_default:=$host_cc}
4157 set_default ar as objcc dep_cc ld ln_s host_ld windres
4158
4159 probe_cc as "$as"
4160 asflags_filter=$_flags_filter
4161 add_asflags $_flags $_cflags
4162 set_ccvars AS
4163
4164 probe_cc objcc "$objcc"
4165 objcflags_filter=$_flags_filter
4166 add_objcflags $_flags $_cflags
4167 set_ccvars OBJC
4168
4169 probe_cc ld "$ld"
4170 ldflags_filter=$_flags_filter
4171 add_ldflags $_flags $_ldflags
4172 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4173 LD_O=${_ld_o-$LD_O}
4174 LD_LIB=${_ld_lib-$LD_LIB}
4175 LD_PATH=${_ld_path-$LD_PATH}
4176
4177 probe_cc hostld "$host_ld"
4178 host_ldflags_filter=$_flags_filter
4179 add_host_ldflags $_flags $_ldflags
4180 HOSTLD_O=${_ld_o-$HOSTLD_O}
4181
4182 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4183     probe_cc depcc "$dep_cc"
4184     CCDEP=${_DEPCMD:-$DEPCMD}
4185     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4186     DEPCCFLAGS=$_flags
4187 fi
4188
4189 if $ar 2>&1 | grep -q Microsoft; then
4190     arflags="-nologo"
4191     ar_o='-out:$@'
4192 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4193     arflags="rq"
4194     ar_o='$@'
4195 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4196     arflags='-Xany -r -c'
4197     ar_o='$@'
4198 elif $ar 2>&1 | grep -q "\[D\] "; then
4199     arflags="rcD"
4200     ar_o='$@'
4201 else
4202     arflags="rc"
4203     ar_o='$@'
4204 fi
4205
4206 add_cflags $extra_cflags
4207 add_cxxflags $extra_cxxflags
4208 add_objcflags $extra_objcflags
4209 add_asflags $extra_cflags
4210
4211 if test -n "$sysroot"; then
4212     case "$cc_type" in
4213         gcc|llvm_gcc|clang)
4214             add_cppflags --sysroot="$sysroot"
4215             add_ldflags --sysroot="$sysroot"
4216 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4217             add_cppflags -isysroot "$sysroot"
4218             add_ldflags -isysroot "$sysroot"
4219         ;;
4220         tms470)
4221             add_cppflags -I"$sysinclude"
4222             add_ldflags  --sysroot="$sysroot"
4223         ;;
4224     esac
4225 fi
4226
4227 if test "$cpu" = host; then
4228     enabled cross_compile &&
4229         die "--cpu=host makes no sense when cross-compiling."
4230
4231     case "$cc_type" in
4232         gcc|llvm_gcc)
4233             check_native(){
4234                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4235                 sed -n "/cc1.*$1=/{
4236                             s/.*$1=\\([^ ]*\\).*/\\1/
4237                             p
4238                             q
4239                         }" $TMPE
4240             }
4241             cpu=$(check_native -march || check_native -mcpu)
4242         ;;
4243         clang)
4244             check_native(){
4245                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4246                 sed -n "/cc1.*-target-cpu /{
4247                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4248                             p
4249                             q
4250                         }" $TMPE
4251             }
4252             cpu=$(check_native -march)
4253         ;;
4254     esac
4255
4256     test "${cpu:-host}" = host &&
4257         die "--cpu=host not supported with compiler $cc"
4258 fi
4259
4260 # Deal with common $arch aliases
4261 case "$arch" in
4262     aarch64|arm64)
4263         arch="aarch64"
4264     ;;
4265     arm*|iPad*|iPhone*)
4266         arch="arm"
4267     ;;
4268     mips*|IP*)
4269         case "$arch" in
4270         *el)
4271             add_cppflags -EL
4272             add_ldflags -EL
4273         ;;
4274         *eb)
4275             add_cppflags -EB
4276             add_ldflags -EB
4277         ;;
4278         esac
4279         arch="mips"
4280     ;;
4281     parisc*|hppa*)
4282         arch="parisc"
4283     ;;
4284     "Power Macintosh"|ppc*|powerpc*)
4285         arch="ppc"
4286     ;;
4287     s390|s390x)
4288         arch="s390"
4289     ;;
4290     sh4|sh)
4291         arch="sh4"
4292     ;;
4293     sun4*|sparc*)
4294         arch="sparc"
4295     ;;
4296     tilegx|tile-gx)
4297         arch="tilegx"
4298     ;;
4299     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4300         arch="x86"
4301     ;;
4302 esac
4303
4304 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4305 enable $arch
4306
4307 # Add processor-specific flags
4308 if enabled aarch64; then
4309
4310     case $cpu in
4311         armv*)
4312             cpuflags="-march=$cpu"
4313         ;;
4314         *)
4315             cpuflags="-mcpu=$cpu"
4316         ;;
4317     esac
4318
4319 elif enabled alpha; then
4320
4321     cpuflags="-mcpu=$cpu"
4322
4323 elif enabled arm; then
4324
4325     check_arm_arch() {
4326         check_cpp_condition stddef.h \
4327             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4328             $cpuflags
4329     }
4330
4331     probe_arm_arch() {
4332         if   check_arm_arch 4;        then echo armv4
4333         elif check_arm_arch 4T;       then echo armv4t
4334         elif check_arm_arch 5;        then echo armv5
4335         elif check_arm_arch 5E;       then echo armv5e
4336         elif check_arm_arch 5T;       then echo armv5t
4337         elif check_arm_arch 5TE;      then echo armv5te
4338         elif check_arm_arch 5TEJ;     then echo armv5te
4339         elif check_arm_arch 6;        then echo armv6
4340         elif check_arm_arch 6J;       then echo armv6j
4341         elif check_arm_arch 6K;       then echo armv6k
4342         elif check_arm_arch 6Z;       then echo armv6z
4343         elif check_arm_arch 6ZK;      then echo armv6zk
4344         elif check_arm_arch 6T2;      then echo armv6t2
4345         elif check_arm_arch 7;        then echo armv7
4346         elif check_arm_arch 7A  7_A;  then echo armv7-a
4347         elif check_arm_arch 7S;       then echo armv7-a
4348         elif check_arm_arch 7R  7_R;  then echo armv7-r
4349         elif check_arm_arch 7M  7_M;  then echo armv7-m
4350         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4351         elif check_arm_arch 8A  8_A;  then echo armv8-a
4352         fi
4353     }
4354
4355     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4356
4357     case $cpu in
4358         armv*)
4359             cpuflags="-march=$cpu"
4360             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4361         ;;
4362         *)
4363             cpuflags="-mcpu=$cpu"
4364             case $cpu in
4365                 cortex-a*)                               subarch=armv7a  ;;
4366                 cortex-r*)                               subarch=armv7r  ;;
4367                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4368                 arm11*)                                  subarch=armv6   ;;
4369                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4370                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4371                 *)                             subarch=$(probe_arm_arch) ;;
4372             esac
4373         ;;
4374     esac
4375
4376     case "$subarch" in
4377         armv5t*)    enable fast_clz                ;;
4378         armv[6-8]*)
4379             enable fast_clz
4380             disabled fast_unaligned || enable fast_unaligned
4381             ;;
4382     esac
4383
4384 elif enabled avr32; then
4385
4386     case $cpu in
4387         ap7[02]0[0-2])
4388             subarch="avr32_ap"
4389             cpuflags="-mpart=$cpu"
4390         ;;
4391         ap)
4392             subarch="avr32_ap"
4393             cpuflags="-march=$cpu"
4394         ;;
4395         uc3[ab]*)
4396             subarch="avr32_uc"
4397             cpuflags="-mcpu=$cpu"
4398         ;;
4399         uc)
4400             subarch="avr32_uc"
4401             cpuflags="-march=$cpu"
4402         ;;
4403     esac
4404
4405 elif enabled bfin; then
4406
4407     cpuflags="-mcpu=$cpu"
4408
4409 elif enabled mips; then
4410
4411     cpuflags="-march=$cpu"
4412
4413     if [ "$cpu" != "generic" ]; then
4414         disable mips32r2
4415         disable mips32r5
4416         disable mips64r2
4417         disable mips32r6
4418         disable mips64r6
4419         disable loongson2
4420         disable loongson3
4421
4422         case $cpu in
4423             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4424                 enable mips32r2
4425                 disable msa
4426             ;;
4427             p5600|i6400|p6600)
4428                 disable mipsdsp
4429                 disable mipsdspr2
4430             ;;
4431             loongson*)
4432                 enable loongson2
4433                 enable loongson3
4434                 enable local_aligned_8 local_aligned_16 local_aligned_32
4435                 enable simd_align_16
4436                 enable fast_64bit
4437                 enable fast_clz
4438                 enable fast_cmov
4439                 enable fast_unaligned
4440                 disable aligned_stack
4441                 disable mipsfpu
4442                 disable mipsdsp
4443                 disable mipsdspr2
4444                 case $cpu in
4445                     loongson3*)
4446                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4447                     ;;
4448                     loongson2e)
4449                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4450                     ;;
4451                     loongson2f)
4452                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4453                     ;;
4454                 esac
4455             ;;
4456             *)
4457                 # Unknown CPU. Disable everything.
4458                 warn "unknown CPU. Disabling all MIPS optimizations."
4459                 disable mipsfpu
4460                 disable mipsdsp
4461                 disable mipsdspr2
4462                 disable msa
4463                 disable mmi
4464             ;;
4465         esac
4466
4467         case $cpu in
4468             24kc)
4469                 disable mipsfpu
4470                 disable mipsdsp
4471                 disable mipsdspr2
4472             ;;
4473             24kf*)
4474                 disable mipsdsp
4475                 disable mipsdspr2
4476             ;;
4477             24kec|34kc|1004kc)
4478                 disable mipsfpu
4479                 disable mipsdspr2
4480             ;;
4481             24kef*|34kf*|1004kf*)
4482                 disable mipsdspr2
4483             ;;
4484             74kc)
4485                 disable mipsfpu
4486             ;;
4487             p5600)
4488                 enable mips32r5
4489                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4490             ;;
4491             i6400)
4492                 enable mips64r6
4493                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4494             ;;
4495             p6600)
4496                 enable mips64r6
4497                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4498             ;;
4499         esac
4500     else
4501         # We do not disable anything. Is up to the user to disable the unwanted features.
4502         warn 'generic cpu selected'
4503     fi
4504
4505 elif enabled ppc; then
4506
4507     disable ldbrx
4508
4509     case $(tolower $cpu) in
4510         601|ppc601|powerpc601)
4511             cpuflags="-mcpu=601"
4512             disable altivec
4513         ;;
4514         603*|ppc603*|powerpc603*)
4515             cpuflags="-mcpu=603"
4516             disable altivec
4517         ;;
4518         604*|ppc604*|powerpc604*)
4519             cpuflags="-mcpu=604"
4520             disable altivec
4521         ;;
4522         g3|75*|ppc75*|powerpc75*)
4523             cpuflags="-mcpu=750"
4524             disable altivec
4525         ;;
4526         g4|745*|ppc745*|powerpc745*)
4527             cpuflags="-mcpu=7450"
4528             disable vsx
4529         ;;
4530         74*|ppc74*|powerpc74*)
4531             cpuflags="-mcpu=7400"
4532             disable vsx
4533         ;;
4534         g5|970|ppc970|powerpc970)
4535             cpuflags="-mcpu=970"
4536             disable vsx
4537         ;;
4538         power[3-6]*)
4539             cpuflags="-mcpu=$cpu"
4540             disable vsx
4541         ;;
4542         power[7-8]*)
4543             cpuflags="-mcpu=$cpu"
4544         ;;
4545         cell)
4546             cpuflags="-mcpu=cell"
4547             enable ldbrx
4548             disable vsx
4549         ;;
4550         e500mc)
4551             cpuflags="-mcpu=e500mc"
4552             disable altivec
4553         ;;
4554         e500v2)
4555             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4556             disable altivec
4557             disable dcbzl
4558         ;;
4559         e500)
4560             cpuflags="-mcpu=8540 -mhard-float"
4561             disable altivec
4562             disable dcbzl
4563         ;;
4564     esac
4565
4566 elif enabled sparc; then
4567
4568     case $cpu in
4569         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4570             cpuflags="-mcpu=$cpu"
4571         ;;
4572         ultrasparc*|niagara[234])
4573             cpuflags="-mcpu=$cpu"
4574         ;;
4575     esac
4576
4577 elif enabled x86; then
4578
4579     case $cpu in
4580         i[345]86|pentium)
4581             cpuflags="-march=$cpu"
4582             disable i686
4583             disable mmx
4584         ;;
4585         # targets that do NOT support nopl and conditional mov (cmov)
4586         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4587             cpuflags="-march=$cpu"
4588             disable i686
4589         ;;
4590         # targets that do support nopl and conditional mov (cmov)
4591         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4592         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4593         |amdfam10|barcelona|b[dt]ver*|znver*)
4594             cpuflags="-march=$cpu"
4595             enable i686
4596             enable fast_cmov
4597         ;;
4598         # targets that do support conditional mov but on which it's slow
4599         pentium4|pentium4m|prescott|nocona)
4600             cpuflags="-march=$cpu"
4601             enable i686
4602             disable fast_cmov
4603         ;;
4604     esac
4605
4606 fi
4607
4608 if [ "$cpu" != generic ]; then
4609     add_cflags  $cpuflags
4610     add_asflags $cpuflags
4611     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4612 fi
4613
4614 # compiler sanity check
4615 check_exec <<EOF
4616 int main(void){ return 0; }
4617 EOF
4618 if test "$?" != 0; then
4619     echo "$cc is unable to create an executable file."
4620     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4621         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4622         echo "Only do this if you know what cross compiling means."
4623     fi
4624     die "C compiler test failed."
4625 fi
4626
4627 add_cppflags -D_ISOC99_SOURCE
4628 add_cxxflags -D__STDC_CONSTANT_MACROS
4629 add_cxxflags -std=c++98
4630
4631 # some compilers silently accept -std=c11, so we also need to check that the
4632 # version macro is defined properly
4633 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4634     add_cflags -std=c11
4635 else
4636     check_cflags -std=c99
4637 fi
4638
4639 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4640 #include <stdlib.h>
4641 EOF
4642 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4643 #include <stdlib.h>
4644 EOF
4645
4646 add_host_cppflags -D_ISOC99_SOURCE
4647 check_host_cflags -std=c99
4648 check_host_cflags -Wall
4649 check_host_cflags -O3
4650
4651 check_64bit(){
4652     arch32=$1
4653     arch64=$2
4654     expr=$3
4655     check_code cc "" "int test[2*($expr) - 1]" &&
4656         subarch=$arch64 || subarch=$arch32
4657 }
4658
4659 case "$arch" in
4660     aarch64|alpha|ia64)
4661         spic=$shared
4662     ;;
4663     mips)
4664         check_64bit mips mips64 '_MIPS_SIM > 1'
4665         spic=$shared
4666     ;;
4667     parisc)
4668         check_64bit parisc parisc64 'sizeof(void *) > 4'
4669         spic=$shared
4670     ;;
4671     ppc)
4672         check_64bit ppc ppc64 'sizeof(void *) > 4'
4673         spic=$shared
4674     ;;
4675     s390)
4676         check_64bit s390 s390x 'sizeof(void *) > 4'
4677         spic=$shared
4678     ;;
4679     sparc)
4680         check_64bit sparc sparc64 'sizeof(void *) > 4'
4681         spic=$shared
4682     ;;
4683     x86)
4684         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4685         # Treat x32 as x64 for now. Note it also needs spic=$shared
4686         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4687             subarch=x86_64
4688         if test "$subarch" = "x86_64"; then
4689             spic=$shared
4690         fi
4691     ;;
4692     ppc)
4693         check_cc <<EOF && subarch="ppc64"
4694         int test[(int)sizeof(char*) - 7];
4695 EOF
4696     ;;
4697 esac
4698
4699 enable $subarch
4700 enabled spic && enable_weak pic
4701
4702 # OS specific
4703 case $target_os in
4704     aix)
4705         SHFLAGS=-shared
4706         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4707         enabled shared && add_ldflags -Wl,-brtl
4708         ;;
4709     android)
4710         disable symver
4711         enable section_data_rel_ro
4712         SLIB_INSTALL_NAME='$(SLIBNAME)'
4713         SLIB_INSTALL_LINKS=
4714         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4715         ;;
4716     haiku)
4717         prefix_default="/boot/common"
4718         network_extralibs="-lnetwork"
4719         host_libs=
4720         ;;
4721     sunos)
4722         SHFLAGS='-shared -Wl,-h,$$(@F)'
4723         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4724         network_extralibs="-lsocket -lnsl"
4725         add_cppflags -D__EXTENSIONS__
4726         # When using suncc to build, the Solaris linker will mark
4727         # an executable with each instruction set encountered by
4728         # the Solaris assembler.  As our libraries contain their own
4729         # guards for processor-specific code, instead suppress
4730         # generation of the HWCAPS ELF section on Solaris x86 only.
4731         enabled_all suncc x86 &&
4732             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4733             add_ldflags -Wl,-M,mapfile
4734         nm_default='nm -P -g'
4735         version_script='-M'
4736         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4737         ;;
4738     netbsd)
4739         disable symver
4740         oss_indev_extralibs="-lossaudio"
4741         oss_outdev_extralibs="-lossaudio"
4742         enabled gcc || check_ldflags -Wl,-zmuldefs
4743         ;;
4744     openbsd|bitrig)
4745         disable symver
4746         SHFLAGS='-shared'
4747         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4748         SLIB_INSTALL_LINKS=
4749         oss_indev_extralibs="-lossaudio"
4750         oss_outdev_extralibs="-lossaudio"
4751         ;;
4752     dragonfly)
4753         disable symver
4754         ;;
4755     freebsd)
4756         ;;
4757     bsd/os)
4758         add_extralibs -lpoll -lgnugetopt
4759         strip="strip -d"
4760         ;;
4761     darwin)
4762         enabled ppc && add_asflags -force_cpusubtype_ALL
4763         install_name_dir_default='$(SHLIBDIR)'
4764         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4765         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4766         strip="${strip} -x"
4767         add_ldflags -Wl,-dynamic,-search_paths_first
4768         SLIBSUF=".dylib"
4769         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4770         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4771         objformat="macho"
4772         enabled x86_64 && objformat="macho64"
4773         enabled_any pic shared x86_64 ||
4774             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4775         check_header dispatch/dispatch.h &&
4776             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4777         version_script='-exported_symbols_list'
4778         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4779         ;;
4780     msys*)
4781         die "Native MSYS builds are discouraged, please use the MINGW environment."
4782         ;;
4783     mingw32*|mingw64*)
4784         if test $target_os = "mingw32ce"; then
4785             disable network
4786         else
4787             target_os=mingw32
4788         fi
4789         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4790         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4791         LIBTARGET=i386
4792         if enabled x86_64; then
4793             LIBTARGET="i386:x86-64"
4794         elif enabled arm; then
4795             LIBTARGET=arm-wince
4796         fi
4797         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4798         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4799         shlibdir_default="$bindir_default"
4800         SLIBPREF=""
4801         SLIBSUF=".dll"
4802         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4803         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4804         dlltool="${cross_prefix}dlltool"
4805         if check_cmd lib.exe -list; then
4806             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4807             if enabled x86_64; then
4808                 LIBTARGET=x64
4809             fi
4810         elif check_cmd $dlltool --version; then
4811             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4812         fi
4813         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4814         SLIB_INSTALL_LINKS=
4815         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4816         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4817         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4818         objformat="win32"
4819         ranlib=:
4820         enable dos_paths
4821         check_ldflags -Wl,--nxcompat,--dynamicbase
4822         # Lets work around some stupidity in binutils.
4823         # ld will strip relocations from executables even though we need them
4824         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4825         # however ld then forgets what the entry point should be (oops) so we
4826         # have to manually (re)set it.
4827         if enabled x86_32; then
4828             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4829         elif enabled x86_64; then
4830             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4831             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4832             # Set image base >4GB for extra entropy with HEASLR
4833             add_ldexeflags -Wl,--image-base,0x140000000
4834             append SHFLAGS -Wl,--image-base,0x180000000
4835         fi
4836         ;;
4837     win32|win64)
4838         disable symver
4839         if enabled shared; then
4840             # Link to the import library instead of the normal static library
4841             # for shared libs.
4842             LD_LIB='%.lib'
4843             # Cannot build both shared and static libs with MSVC or icl.
4844             disable static
4845         fi
4846         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4847         shlibdir_default="$bindir_default"
4848         SLIBPREF=""
4849         SLIBSUF=".dll"
4850         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'