vaapi_encode: Add VP8 support
[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_fpu_directive
1997     as_func
1998     as_object_arch
1999     asm_mod_q
2000     attribute_may_alias
2001     attribute_packed
2002     ebp_available
2003     ebx_available
2004     gnu_as
2005     gnu_windres
2006     ibm_asm
2007     inline_asm_direct_symbol_refs
2008     inline_asm_labels
2009     inline_asm_nonlocal_labels
2010     pragma_deprecated
2011     rsync_contimeout
2012     symver_asm_label
2013     symver_gnu_asm
2014     vfp_args
2015     xform_asm
2016     xmm_clobbers
2017 "
2018
2019 TYPES_LIST="
2020     CONDITION_VARIABLE_Ptr
2021     socklen_t
2022     struct_addrinfo
2023     struct_group_source_req
2024     struct_ip_mreq_source
2025     struct_ipv6_mreq
2026     struct_msghdr_msg_flags
2027     struct_pollfd
2028     struct_rusage_ru_maxrss
2029     struct_sctp_event_subscribe
2030     struct_sockaddr_in6
2031     struct_sockaddr_sa_len
2032     struct_sockaddr_storage
2033     struct_stat_st_mtim_tv_nsec
2034     struct_v4l2_frmivalenum_discrete
2035 "
2036
2037 HAVE_LIST="
2038     $ARCH_EXT_LIST
2039     $(add_suffix _external $ARCH_EXT_LIST)
2040     $(add_suffix _inline   $ARCH_EXT_LIST)
2041     $ARCH_FEATURES
2042     $ATOMICS_LIST
2043     $BUILTIN_LIST
2044     $COMPLEX_FUNCS
2045     $HAVE_LIST_CMDLINE
2046     $HAVE_LIST_PUB
2047     $HEADERS_LIST
2048     $INTRINSICS_LIST
2049     $MATH_FUNCS
2050     $SYSTEM_FUNCS
2051     $THREADS_LIST
2052     $TOOLCHAIN_FEATURES
2053     $TYPES_LIST
2054     atomics_native
2055     dos_paths
2056     dxva2_lib
2057     dxva2api_cobj
2058     libc_msvcrt
2059     libdc1394_1
2060     libdc1394_2
2061     makeinfo
2062     makeinfo_html
2063     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2064     perl
2065     pod2man
2066     sdl2
2067     section_data_rel_ro
2068     texi2html
2069     threads
2070     vaapi_drm
2071     vaapi_x11
2072     vdpau_x11
2073     winrt
2074     xlib
2075 "
2076
2077 # options emitted with CONFIG_ prefix but not available on the command line
2078 CONFIG_EXTRA="
2079     aandcttables
2080     ac3dsp
2081     audio_frame_queue
2082     audiodsp
2083     blockdsp
2084     bswapdsp
2085     cabac
2086     dirac_parse
2087     dvprofile
2088     exif
2089     faandct
2090     faanidct
2091     fdctdsp
2092     flacdsp
2093     fmtconvert
2094     frame_thread_encoder
2095     g722dsp
2096     golomb
2097     gplv3
2098     h263dsp
2099     h264chroma
2100     h264dsp
2101     h264parse
2102     h264pred
2103     h264qpel
2104     hpeldsp
2105     huffman
2106     huffyuvdsp
2107     huffyuvencdsp
2108     idctdsp
2109     iirfilter
2110     imdct15
2111     intrax8
2112     iso_media
2113     ividsp
2114     jpegtables
2115     lgplv3
2116     libx262
2117     llauddsp
2118     llviddsp
2119     llvidencdsp
2120     lpc
2121     lzf
2122     me_cmp
2123     mpeg_er
2124     mpegaudio
2125     mpegaudiodsp
2126     mpegvideo
2127     mpegvideoenc
2128     mss34dsp
2129     pixblockdsp
2130     qpeldsp
2131     qsv
2132     qsvdec
2133     qsvenc
2134     rangecoder
2135     riffdec
2136     riffenc
2137     rtpdec
2138     rtpenc_chain
2139     rv34dsp
2140     sinewin
2141     snappy
2142     srtp
2143     startcode
2144     texturedsp
2145     texturedspenc
2146     tpeldsp
2147     vaapi_encode
2148     vc1dsp
2149     videodsp
2150     vp3dsp
2151     vp56dsp
2152     vp8dsp
2153     vt_bt2020
2154     wma_freqs
2155     wmv2dsp
2156 "
2157
2158 CMDLINE_SELECT="
2159     $ARCH_EXT_LIST
2160     $CONFIG_LIST
2161     $HAVE_LIST_CMDLINE
2162     $THREADS_LIST
2163     asm
2164     cross_compile
2165     debug
2166     extra_warnings
2167     logging
2168     lto
2169     optimizations
2170     rpath
2171     stripping
2172 "
2173
2174 PATHS_LIST="
2175     bindir
2176     datadir
2177     docdir
2178     incdir
2179     libdir
2180     mandir
2181     pkgconfigdir
2182     prefix
2183     shlibdir
2184     install_name_dir
2185 "
2186
2187 CMDLINE_SET="
2188     $PATHS_LIST
2189     ar
2190     arch
2191     as
2192     assert_level
2193     build_suffix
2194     cc
2195     objcc
2196     cpu
2197     cross_prefix
2198     custom_allocator
2199     cxx
2200     dep_cc
2201     doxygen
2202     env
2203     extra_version
2204     gas
2205     host_cc
2206     host_cflags
2207     host_ld
2208     host_ldflags
2209     host_libs
2210     host_os
2211     install
2212     ld
2213     ln_s
2214     logfile
2215     malloc_prefix
2216     nm
2217     optflags
2218     pkg_config
2219     pkg_config_flags
2220     progs_suffix
2221     random_seed
2222     ranlib
2223     samples
2224     strip
2225     sws_max_filter_size
2226     sysinclude
2227     sysroot
2228     target_exec
2229     target_os
2230     target_path
2231     target_samples
2232     tempprefix
2233     toolchain
2234     valgrind
2235     yasmexe
2236 "
2237
2238 CMDLINE_APPEND="
2239     extra_cflags
2240     extra_cxxflags
2241     extra_objcflags
2242     host_cppflags
2243 "
2244
2245 # code dependency declarations
2246
2247 # architecture extensions
2248
2249 armv5te_deps="arm"
2250 armv6_deps="arm"
2251 armv6t2_deps="arm"
2252 armv8_deps="aarch64"
2253 neon_deps_any="aarch64 arm"
2254 intrinsics_neon_deps="neon"
2255 vfp_deps_any="aarch64 arm"
2256 vfpv3_deps="vfp"
2257 setend_deps="arm"
2258
2259 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2260
2261 loongson2_deps="mips"
2262 loongson3_deps="mips"
2263 mipsfpu_deps="mips"
2264 mipsdsp_deps="mips"
2265 mipsdspr2_deps="mips"
2266 mips32r2_deps="mips"
2267 mips32r5_deps="mips"
2268 mips32r6_deps="mips"
2269 mips64r2_deps="mips"
2270 mips64r6_deps="mips"
2271 msa_deps="mipsfpu"
2272 mmi_deps="mips"
2273
2274 altivec_deps="ppc"
2275 dcbzl_deps="ppc"
2276 ldbrx_deps="ppc"
2277 ppc4xx_deps="ppc"
2278 vsx_deps="altivec"
2279 power8_deps="vsx"
2280
2281 cpunop_deps="i686"
2282 x86_64_select="i686"
2283 x86_64_suggest="fast_cmov"
2284
2285 amd3dnow_deps="mmx"
2286 amd3dnowext_deps="amd3dnow"
2287 i686_deps="x86"
2288 mmx_deps="x86"
2289 mmxext_deps="mmx"
2290 sse_deps="mmxext"
2291 sse2_deps="sse"
2292 sse3_deps="sse2"
2293 ssse3_deps="sse3"
2294 sse4_deps="ssse3"
2295 sse42_deps="sse4"
2296 aesni_deps="sse42"
2297 avx_deps="sse42"
2298 xop_deps="avx"
2299 fma3_deps="avx"
2300 fma4_deps="avx"
2301 avx2_deps="avx"
2302
2303 mmx_external_deps="yasm"
2304 mmx_inline_deps="inline_asm"
2305 mmx_suggest="mmx_external mmx_inline"
2306
2307 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2308     eval dep=\$${ext}_deps
2309     eval ${ext}_external_deps='"${dep}_external"'
2310     eval ${ext}_inline_deps='"${dep}_inline"'
2311     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2312 done
2313
2314 aligned_stack_if_any="aarch64 ppc x86"
2315 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2316 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2317 fast_unaligned_if_any="aarch64 ppc x86"
2318 simd_align_16_if_any="altivec neon sse"
2319
2320 # system capabilities
2321 symver_if_any="symver_asm_label symver_gnu_asm"
2322 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2323
2324 # threading support
2325 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2326 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2327 atomics_win32_if="MemoryBarrier"
2328 atomics_native_if_any="$ATOMICS_LIST"
2329 w32threads_deps="atomics_native"
2330 threads_if_any="$THREADS_LIST"
2331
2332 # subsystems
2333 dct_select="rdft"
2334 dirac_parse_select="golomb"
2335 error_resilience_select="me_cmp"
2336 faandct_deps="faan fdctdsp"
2337 faanidct_deps="faan idctdsp"
2338 h264dsp_select="startcode"
2339 frame_thread_encoder_deps="encoders threads"
2340 intrax8_select="blockdsp idctdsp"
2341 mdct_select="fft"
2342 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2343 mpeg_er_select="error_resilience"
2344 mpegaudio_select="mpegaudiodsp"
2345 mpegaudiodsp_select="dct"
2346 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2347 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2348 vc1dsp_select="h264chroma qpeldsp startcode"
2349 rdft_select="fft"
2350
2351 # decoders / encoders
2352 aac_decoder_select="imdct15 mdct sinewin"
2353 aac_fixed_decoder_select="mdct sinewin"
2354 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2355 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2356 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2357 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2358 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2359 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2360 adpcm_g722_decoder_select="g722dsp"
2361 adpcm_g722_encoder_select="g722dsp"
2362 aic_decoder_select="golomb idctdsp"
2363 alac_encoder_select="lpc"
2364 als_decoder_select="bswapdsp"
2365 amrnb_decoder_select="lsp"
2366 amrwb_decoder_select="lsp"
2367 amv_decoder_select="sp5x_decoder exif"
2368 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2369 ape_decoder_select="bswapdsp llauddsp"
2370 apng_decoder_select="zlib"
2371 apng_encoder_select="llvidencdsp zlib"
2372 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2373 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2374 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2375 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2376 atrac1_decoder_select="mdct sinewin"
2377 atrac3_decoder_select="mdct"
2378 atrac3p_decoder_select="mdct sinewin"
2379 avrn_decoder_select="exif jpegtables"
2380 bink_decoder_select="blockdsp hpeldsp"
2381 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2382 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2383 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2384 cllc_decoder_select="bswapdsp"
2385 comfortnoise_encoder_select="lpc"
2386 cook_decoder_select="audiodsp mdct sinewin"
2387 cscd_decoder_select="lzo"
2388 cscd_decoder_suggest="zlib"
2389 dca_decoder_select="mdct"
2390 dds_decoder_select="texturedsp"
2391 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2392 dnxhd_decoder_select="blockdsp idctdsp"
2393 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2394 dvvideo_decoder_select="dvprofile idctdsp"
2395 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2396 dxa_decoder_select="zlib"
2397 dxv_decoder_select="lzf texturedsp"
2398 eac3_decoder_select="ac3_decoder"
2399 eac3_encoder_select="ac3_encoder"
2400 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2401 eatgq_decoder_select="aandcttables"
2402 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2403 exr_decoder_select="zlib"
2404 ffv1_decoder_select="golomb rangecoder"
2405 ffv1_encoder_select="rangecoder"
2406 ffvhuff_decoder_select="huffyuv_decoder"
2407 ffvhuff_encoder_select="huffyuv_encoder"
2408 fic_decoder_select="golomb"
2409 flac_decoder_select="flacdsp golomb"
2410 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2411 flashsv2_decoder_select="zlib"
2412 flashsv2_encoder_select="zlib"
2413 flashsv_decoder_select="zlib"
2414 flashsv_encoder_select="zlib"
2415 flv_decoder_select="h263_decoder"
2416 flv_encoder_select="h263_encoder"
2417 fourxm_decoder_select="blockdsp bswapdsp"
2418 fraps_decoder_select="bswapdsp huffman"
2419 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2420 g729_decoder_select="audiodsp"
2421 h261_decoder_select="mpegvideo"
2422 h261_encoder_select="aandcttables mpegvideoenc"
2423 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2424 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2425 h263i_decoder_select="h263_decoder"
2426 h263p_decoder_select="h263_decoder"
2427 h263p_encoder_select="h263_encoder"
2428 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2429 h264_decoder_suggest="error_resilience"
2430 hap_decoder_select="snappy texturedsp"
2431 hap_encoder_deps="libsnappy"
2432 hap_encoder_select="texturedspenc"
2433 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2434 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2435 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2436 iac_decoder_select="imc_decoder"
2437 imc_decoder_select="bswapdsp fft mdct sinewin"
2438 indeo3_decoder_select="hpeldsp"
2439 indeo4_decoder_select="ividsp"
2440 indeo5_decoder_select="ividsp"
2441 interplay_video_decoder_select="hpeldsp"
2442 jpegls_decoder_select="golomb mjpeg_decoder"
2443 jpegls_encoder_select="golomb"
2444 jv_decoder_select="blockdsp"
2445 lagarith_decoder_select="llviddsp"
2446 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2447 loco_decoder_select="golomb"
2448 magicyuv_decoder_select="llviddsp"
2449 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2450 metasound_decoder_select="lsp mdct sinewin"
2451 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2452 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2453 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2454 mjpegb_decoder_select="mjpeg_decoder"
2455 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2456 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2457 mlp_decoder_select="mlp_parser"
2458 motionpixels_decoder_select="bswapdsp"
2459 mp1_decoder_select="mpegaudio"
2460 mp1float_decoder_select="mpegaudio"
2461 mp2_decoder_select="mpegaudio"
2462 mp2float_decoder_select="mpegaudio"
2463 mp3_decoder_select="mpegaudio"
2464 mp3adu_decoder_select="mpegaudio"
2465 mp3adufloat_decoder_select="mpegaudio"
2466 mp3float_decoder_select="mpegaudio"
2467 mp3on4_decoder_select="mpegaudio"
2468 mp3on4float_decoder_select="mpegaudio"
2469 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2470 mpc8_decoder_select="mpegaudiodsp"
2471 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2472 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2473 mpegvideo_decoder_select="mpegvideo"
2474 mpeg1video_decoder_select="mpegvideo"
2475 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2476 mpeg2video_decoder_select="mpegvideo"
2477 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2478 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2479 mpeg4_encoder_select="h263_encoder"
2480 msa1_decoder_select="mss34dsp"
2481 msmpeg4v1_decoder_select="h263_decoder"
2482 msmpeg4v2_decoder_select="h263_decoder"
2483 msmpeg4v2_encoder_select="h263_encoder"
2484 msmpeg4v3_decoder_select="h263_decoder"
2485 msmpeg4v3_encoder_select="h263_encoder"
2486 mss2_decoder_select="vc1_decoder mpegvideo"
2487 mts2_decoder_select="mss34dsp"
2488 mxpeg_decoder_select="mjpeg_decoder"
2489 nellymoser_decoder_select="mdct sinewin"
2490 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2491 nuv_decoder_select="idctdsp lzo"
2492 on2avc_decoder_select="mdct"
2493 opus_decoder_deps="swresample"
2494 opus_decoder_select="imdct15"
2495 png_decoder_select="zlib"
2496 png_encoder_select="llvidencdsp zlib"
2497 prores_decoder_select="blockdsp idctdsp"
2498 prores_encoder_select="fdctdsp"
2499 qcelp_decoder_select="lsp"
2500 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2501 ra_144_decoder_select="audiodsp"
2502 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2503 ralf_decoder_select="golomb"
2504 rawvideo_decoder_select="bswapdsp"
2505 rscc_decoder_select="zlib"
2506 rtjpeg_decoder_select="me_cmp"
2507 rv10_decoder_select="h263_decoder"
2508 rv10_encoder_select="h263_encoder"
2509 rv20_decoder_select="h263_decoder"
2510 rv20_encoder_select="h263_encoder"
2511 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2512 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2513 screenpresso_decoder_select="zlib"
2514 shorten_decoder_select="golomb"
2515 sipr_decoder_select="lsp"
2516 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2517 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2518 sonic_decoder_select="golomb rangecoder"
2519 sonic_encoder_select="golomb rangecoder"
2520 sonic_ls_encoder_select="golomb rangecoder"
2521 sp5x_decoder_select="mjpeg_decoder"
2522 svq1_decoder_select="hpeldsp"
2523 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2524 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2525 svq3_decoder_suggest="zlib"
2526 tak_decoder_select="audiodsp"
2527 tdsc_decoder_select="zlib mjpeg_decoder"
2528 theora_decoder_select="vp3_decoder"
2529 thp_decoder_select="mjpeg_decoder"
2530 tiff_decoder_suggest="zlib lzma"
2531 tiff_encoder_suggest="zlib"
2532 truehd_decoder_select="mlp_parser"
2533 truemotion2_decoder_select="bswapdsp"
2534 truespeech_decoder_select="bswapdsp"
2535 tscc_decoder_select="zlib"
2536 twinvq_decoder_select="mdct lsp sinewin"
2537 txd_decoder_select="texturedsp"
2538 utvideo_decoder_select="bswapdsp llviddsp"
2539 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2540 vble_decoder_select="llviddsp"
2541 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2542 vc1_qsv_decoder_deps="libmfx"
2543 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2544 vc1image_decoder_select="vc1_decoder"
2545 vorbis_decoder_select="mdct"
2546 vorbis_encoder_select="mdct"
2547 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2548 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2549 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2550 vp6a_decoder_select="vp6_decoder"
2551 vp6f_decoder_select="vp6_decoder"
2552 vp7_decoder_select="h264pred videodsp vp8dsp"
2553 vp8_decoder_select="h264pred videodsp vp8dsp"
2554 vp9_decoder_select="videodsp vp9_parser"
2555 webp_decoder_select="vp8_decoder exif"
2556 wmalossless_decoder_select="llauddsp"
2557 wmapro_decoder_select="mdct sinewin wma_freqs"
2558 wmav1_decoder_select="mdct sinewin wma_freqs"
2559 wmav1_encoder_select="mdct sinewin wma_freqs"
2560 wmav2_decoder_select="mdct sinewin wma_freqs"
2561 wmav2_encoder_select="mdct sinewin wma_freqs"
2562 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2563 wmv1_decoder_select="h263_decoder"
2564 wmv1_encoder_select="h263_encoder"
2565 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2566 wmv2_encoder_select="h263_encoder wmv2dsp"
2567 wmv3_decoder_select="vc1_decoder"
2568 wmv3image_decoder_select="wmv3_decoder"
2569 xma1_decoder_select="wmapro_decoder"
2570 xma2_decoder_select="wmapro_decoder"
2571 zerocodec_decoder_select="zlib"
2572 zlib_decoder_select="zlib"
2573 zlib_encoder_select="zlib"
2574 zmbv_decoder_select="zlib"
2575 zmbv_encoder_select="zlib"
2576
2577 # platform codecs
2578 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2579 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2580
2581 # hardware accelerators
2582 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2583 cuda_deps_any="dlopen LoadLibrary"
2584 cuvid_deps="cuda"
2585 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2586 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2587 dxva2_extralibs="-luser32"
2588 vaapi_deps="va_va_h"
2589 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2590 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2591 vda_deps="vda_framework pthreads"
2592 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2593 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2594 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2595 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2596 xvmc_deps="X11_extensions_XvMClib_h"
2597
2598 h263_vaapi_hwaccel_deps="vaapi"
2599 h263_vaapi_hwaccel_select="h263_decoder"
2600 h263_videotoolbox_hwaccel_deps="videotoolbox"
2601 h263_videotoolbox_hwaccel_select="h263_decoder"
2602 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2603 h264_cuvid_hwaccel_deps="cuda cuvid"
2604 h264_d3d11va_hwaccel_deps="d3d11va"
2605 h264_d3d11va_hwaccel_select="h264_decoder"
2606 h264_dxva2_hwaccel_deps="dxva2"
2607 h264_dxva2_hwaccel_select="h264_decoder"
2608 h264_mediacodec_decoder_deps="mediacodec"
2609 h264_mediacodec_hwaccel_deps="mediacodec"
2610 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2611 h264_mmal_decoder_deps="mmal"
2612 h264_mmal_decoder_select="mmal"
2613 h264_mmal_hwaccel_deps="mmal"
2614 h264_omx_encoder_deps="omx"
2615 h264_qsv_hwaccel_deps="libmfx"
2616 h264_vaapi_hwaccel_deps="vaapi"
2617 h264_vaapi_hwaccel_select="h264_decoder"
2618 h264_vda_decoder_deps="vda"
2619 h264_vda_decoder_select="h264_decoder"
2620 h264_vda_hwaccel_deps="vda"
2621 h264_vda_hwaccel_select="h264_decoder"
2622 h264_vda_old_hwaccel_deps="vda"
2623 h264_vda_old_hwaccel_select="h264_decoder"
2624 h264_vdpau_decoder_deps="vdpau"
2625 h264_vdpau_decoder_select="h264_decoder"
2626 h264_vdpau_hwaccel_deps="vdpau"
2627 h264_vdpau_hwaccel_select="h264_decoder"
2628 h264_videotoolbox_hwaccel_deps="videotoolbox"
2629 h264_videotoolbox_hwaccel_select="h264_decoder"
2630 hevc_cuvid_hwaccel_deps="cuda cuvid"
2631 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2632 hevc_d3d11va_hwaccel_select="hevc_decoder"
2633 hevc_mediacodec_decoder_deps="mediacodec"
2634 hevc_mediacodec_hwaccel_deps="mediacodec"
2635 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2636 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2637 hevc_dxva2_hwaccel_select="hevc_decoder"
2638 hevc_qsv_hwaccel_deps="libmfx"
2639 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2640 hevc_vaapi_hwaccel_select="hevc_decoder"
2641 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2642 hevc_vdpau_hwaccel_select="hevc_decoder"
2643 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2644 mpeg_vdpau_decoder_deps="vdpau"
2645 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2646 mpeg_xvmc_hwaccel_deps="xvmc"
2647 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2648 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2649 mpeg1_vdpau_decoder_deps="vdpau"
2650 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2651 mpeg1_vdpau_hwaccel_deps="vdpau"
2652 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2653 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2654 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2655 mpeg1_xvmc_hwaccel_deps="xvmc"
2656 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2657 mpeg2_crystalhd_decoder_select="crystalhd"
2658 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2659 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2660 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2661 mpeg2_dxva2_hwaccel_deps="dxva2"
2662 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2663 mpeg2_mmal_decoder_deps="mmal"
2664 mpeg2_mmal_decoder_select="mmal"
2665 mpeg2_mmal_hwaccel_deps="mmal"
2666 mpeg2_qsv_hwaccel_deps="libmfx"
2667 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2668 mpeg2_vaapi_hwaccel_deps="vaapi"
2669 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2670 mpeg2_vdpau_hwaccel_deps="vdpau"
2671 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2672 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2673 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2674 mpeg2_xvmc_hwaccel_deps="xvmc"
2675 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2676 mpeg4_crystalhd_decoder_select="crystalhd"
2677 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2678 mpeg4_mediacodec_decoder_deps="mediacodec"
2679 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2680 mpeg4_mmal_decoder_deps="mmal"
2681 mpeg4_mmal_decoder_select="mmal"
2682 mpeg4_mmal_hwaccel_deps="mmal"
2683 mpeg4_omx_encoder_deps="omx"
2684 mpeg4_vaapi_hwaccel_deps="vaapi"
2685 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2686 mpeg4_vdpau_decoder_deps="vdpau"
2687 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2688 mpeg4_vdpau_hwaccel_deps="vdpau"
2689 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2690 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2691 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2692 msmpeg4_crystalhd_decoder_select="crystalhd"
2693 vc1_crystalhd_decoder_select="crystalhd"
2694 vc1_cuvid_hwaccel_deps="cuda cuvid"
2695 vc1_d3d11va_hwaccel_deps="d3d11va"
2696 vc1_d3d11va_hwaccel_select="vc1_decoder"
2697 vc1_dxva2_hwaccel_deps="dxva2"
2698 vc1_dxva2_hwaccel_select="vc1_decoder"
2699 vc1_mmal_decoder_deps="mmal"
2700 vc1_mmal_decoder_select="mmal"
2701 vc1_mmal_hwaccel_deps="mmal"
2702 vc1_qsv_hwaccel_deps="libmfx"
2703 vc1_qsv_hwaccel_select="qsvdec_vc1"
2704 vc1_vaapi_hwaccel_deps="vaapi"
2705 vc1_vaapi_hwaccel_select="vc1_decoder"
2706 vc1_vdpau_decoder_deps="vdpau"
2707 vc1_vdpau_decoder_select="vc1_decoder"
2708 vc1_vdpau_hwaccel_deps="vdpau"
2709 vc1_vdpau_hwaccel_select="vc1_decoder"
2710 vp8_cuvid_hwaccel_deps="cuda cuvid"
2711 vp9_cuvid_hwaccel_deps="cuda cuvid"
2712 vp8_mediacodec_decoder_deps="mediacodec"
2713 vp8_mediacodec_hwaccel_deps="mediacodec"
2714 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2715 vp9_d3d11va_hwaccel_select="vp9_decoder"
2716 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2717 vp9_dxva2_hwaccel_select="vp9_decoder"
2718 vp9_mediacodec_decoder_deps="mediacodec"
2719 vp9_mediacodec_hwaccel_deps="mediacodec"
2720 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2721 vp9_vaapi_hwaccel_select="vp9_decoder"
2722 wmv3_crystalhd_decoder_select="crystalhd"
2723 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2724 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2725 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2726 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2727 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2728
2729 # hardware-accelerated codecs
2730 omx_deps="dlopen pthreads"
2731 omx_extralibs='$ldl'
2732 qsvdec_select="qsv"
2733 qsvenc_select="qsv"
2734 vaapi_encode_deps="vaapi"
2735
2736 hwupload_cuda_filter_deps="cuda"
2737 scale_npp_filter_deps="cuda libnpp"
2738
2739 nvenc_deps="cuda"
2740 nvenc_deps_any="dlopen LoadLibrary"
2741 nvenc_encoder_deps="nvenc"
2742 h264_cuvid_decoder_deps="cuda cuvid"
2743 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2744 h264_nvenc_encoder_deps="nvenc"
2745 h264_qsv_decoder_deps="libmfx"
2746 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2747 h264_qsv_encoder_deps="libmfx"
2748 h264_qsv_encoder_select="qsvenc"
2749 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2750 h264_vaapi_encoder_select="vaapi_encode golomb"
2751
2752 hevc_cuvid_decoder_deps="cuda cuvid"
2753 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2754 hevc_nvenc_encoder_deps="nvenc"
2755 hevc_qsv_decoder_deps="libmfx"
2756 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2757 hevc_qsv_encoder_deps="libmfx"
2758 hevc_qsv_encoder_select="qsvenc"
2759 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2760 hevc_vaapi_encoder_select="vaapi_encode golomb"
2761 mjpeg_cuvid_decoder_deps="cuda cuvid"
2762 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2763 mpeg1_cuvid_decoder_deps="cuda cuvid"
2764 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2765 mpeg2_cuvid_decoder_deps="cuda cuvid"
2766 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2767 mpeg2_qsv_decoder_deps="libmfx"
2768 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2769 mpeg2_qsv_encoder_deps="libmfx"
2770 mpeg2_qsv_encoder_select="qsvenc"
2771 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2772 mpeg2_vaapi_encoder_select="vaapi_encode"
2773 mpeg4_cuvid_decoder_deps="cuda cuvid"
2774 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2775 nvenc_h264_encoder_deps="nvenc"
2776 nvenc_hevc_encoder_deps="nvenc"
2777
2778 vc1_cuvid_decoder_deps="cuda cuvid"
2779 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2780 vp8_cuvid_decoder_deps="cuda cuvid"
2781 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2782 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2783 vp8_vaapi_encoder_select="vaapi_encode"
2784 vp9_cuvid_decoder_deps="cuda cuvid"
2785 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2786
2787 # parsers
2788 h264_parser_select="golomb h264dsp h264parse"
2789 hevc_parser_select="golomb"
2790 mpegvideo_parser_select="mpegvideo"
2791 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2792 vc1_parser_select="vc1dsp"
2793
2794 # bitstream_filters
2795 mjpeg2jpeg_bsf_select="jpegtables"
2796
2797 # external libraries
2798 aac_at_decoder_deps="audiotoolbox"
2799 ac3_at_decoder_deps="audiotoolbox"
2800 ac3_at_decoder_select="ac3_parser"
2801 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2802 alac_at_decoder_deps="audiotoolbox"
2803 amr_nb_at_decoder_deps="audiotoolbox"
2804 avisynth_deps_any="dlopen LoadLibrary"
2805 avisynth_demuxer_deps="avisynth"
2806 avisynth_demuxer_select="riffdec"
2807 eac3_at_decoder_deps="audiotoolbox"
2808 eac3_at_decoder_select="ac3_parser"
2809 gsm_ms_at_decoder_deps="audiotoolbox"
2810 ilbc_at_decoder_deps="audiotoolbox"
2811 mp1_at_decoder_deps="audiotoolbox"
2812 mp2_at_decoder_deps="audiotoolbox"
2813 mp3_at_decoder_deps="audiotoolbox"
2814 pcm_alaw_at_decoder_deps="audiotoolbox"
2815 pcm_mulaw_at_decoder_deps="audiotoolbox"
2816 qdmc_at_decoder_deps="audiotoolbox"
2817 qdm2_at_decoder_deps="audiotoolbox"
2818 aac_at_encoder_deps="audiotoolbox"
2819 aac_at_encoder_select="audio_frame_queue"
2820 alac_at_encoder_deps="audiotoolbox"
2821 alac_at_encoder_select="audio_frame_queue"
2822 ilbc_at_encoder_deps="audiotoolbox"
2823 ilbc_at_encoder_select="audio_frame_queue"
2824 pcm_alaw_at_encoder_deps="audiotoolbox"
2825 pcm_alaw_at_encoder_select="audio_frame_queue"
2826 pcm_mulaw_at_encoder_deps="audiotoolbox"
2827 pcm_mulaw_at_encoder_select="audio_frame_queue"
2828 chromaprint_muxer_deps="chromaprint"
2829 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2830 libcelt_decoder_deps="libcelt"
2831 libfdk_aac_decoder_deps="libfdk_aac"
2832 libfdk_aac_encoder_deps="libfdk_aac"
2833 libfdk_aac_encoder_select="audio_frame_queue"
2834 libgme_demuxer_deps="libgme"
2835 libgsm_decoder_deps="libgsm"
2836 libgsm_encoder_deps="libgsm"
2837 libgsm_ms_decoder_deps="libgsm"
2838 libgsm_ms_encoder_deps="libgsm"
2839 libilbc_decoder_deps="libilbc"
2840 libilbc_encoder_deps="libilbc"
2841 libkvazaar_encoder_deps="libkvazaar"
2842 libmodplug_demuxer_deps="libmodplug"
2843 libmp3lame_encoder_deps="libmp3lame"
2844 libmp3lame_encoder_select="audio_frame_queue"
2845 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2846 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2847 libopencore_amrnb_encoder_select="audio_frame_queue"
2848 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2849 libopenh264_decoder_deps="libopenh264"
2850 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2851 libopenh264_encoder_deps="libopenh264"
2852 libopenjpeg_decoder_deps="libopenjpeg"
2853 libopenjpeg_encoder_deps="libopenjpeg"
2854 libopenmpt_demuxer_deps="libopenmpt"
2855 libopus_decoder_deps="libopus"
2856 libopus_encoder_deps="libopus"
2857 libopus_encoder_select="audio_frame_queue"
2858 libschroedinger_decoder_deps="libschroedinger"
2859 libschroedinger_encoder_deps="libschroedinger"
2860 libshine_encoder_deps="libshine"
2861 libshine_encoder_select="audio_frame_queue"
2862 libspeex_decoder_deps="libspeex"
2863 libspeex_encoder_deps="libspeex"
2864 libspeex_encoder_select="audio_frame_queue"
2865 libtheora_encoder_deps="libtheora"
2866 libtwolame_encoder_deps="libtwolame"
2867 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2868 libvorbis_decoder_deps="libvorbis"
2869 libvorbis_encoder_deps="libvorbis"
2870 libvorbis_encoder_select="audio_frame_queue"
2871 libvpx_vp8_decoder_deps="libvpx"
2872 libvpx_vp8_encoder_deps="libvpx"
2873 libvpx_vp9_decoder_deps="libvpx"
2874 libvpx_vp9_encoder_deps="libvpx"
2875 libwavpack_encoder_deps="libwavpack"
2876 libwebp_encoder_deps="libwebp"
2877 libwebp_anim_encoder_deps="libwebp"
2878 libx262_encoder_deps="libx262"
2879 libx264_encoder_deps="libx264"
2880 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2881 libx264rgb_encoder_select="libx264_encoder"
2882 libx265_encoder_deps="libx265"
2883 libxavs_encoder_deps="libxavs"
2884 libxvid_encoder_deps="libxvid"
2885 libzvbi_teletext_decoder_deps="libzvbi"
2886 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2887 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2888 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2889 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2890 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2891
2892 # demuxers / muxers
2893 ac3_demuxer_select="ac3_parser"
2894 aiff_muxer_select="iso_media"
2895 asf_demuxer_select="riffdec"
2896 asf_o_demuxer_select="riffdec"
2897 asf_muxer_select="riffenc"
2898 asf_stream_muxer_select="asf_muxer"
2899 avi_demuxer_select="iso_media riffdec exif"
2900 avi_muxer_select="riffenc"
2901 caf_demuxer_select="iso_media riffdec"
2902 caf_muxer_select="iso_media"
2903 dash_muxer_select="mp4_muxer"
2904 dirac_demuxer_select="dirac_parser"
2905 dts_demuxer_select="dca_parser"
2906 dtshd_demuxer_select="dca_parser"
2907 dv_demuxer_select="dvprofile"
2908 dv_muxer_select="dvprofile"
2909 dxa_demuxer_select="riffdec"
2910 eac3_demuxer_select="ac3_parser"
2911 f4v_muxer_select="mov_muxer"
2912 fifo_muxer_deps="threads"
2913 flac_demuxer_select="flac_parser"
2914 hds_muxer_select="flv_muxer"
2915 hls_muxer_select="mpegts_muxer"
2916 image2_alias_pix_demuxer_select="image2_demuxer"
2917 image2_brender_pix_demuxer_select="image2_demuxer"
2918 ipod_muxer_select="mov_muxer"
2919 ismv_muxer_select="mov_muxer"
2920 libnut_demuxer_deps="libnut"
2921 libnut_muxer_deps="libnut"
2922 matroska_audio_muxer_select="matroska_muxer"
2923 matroska_demuxer_select="iso_media riffdec"
2924 matroska_demuxer_suggest="bzlib lzo zlib"
2925 matroska_muxer_select="iso_media riffenc"
2926 mmf_muxer_select="riffenc"
2927 mov_demuxer_select="iso_media riffdec"
2928 mov_demuxer_suggest="zlib"
2929 mov_muxer_select="iso_media riffenc rtpenc_chain"
2930 mp3_demuxer_select="mpegaudio_parser"
2931 mp4_muxer_select="mov_muxer"
2932 mpegts_demuxer_select="iso_media"
2933 mpegts_muxer_select="adts_muxer latm_muxer"
2934 mpegtsraw_demuxer_select="mpegts_demuxer"
2935 mxf_d10_muxer_select="mxf_muxer"
2936 mxf_opatom_muxer_select="mxf_muxer"
2937 nut_muxer_select="riffenc"
2938 nuv_demuxer_select="riffdec"
2939 oga_muxer_select="ogg_muxer"
2940 ogg_demuxer_select="dirac_parse"
2941 ogv_muxer_select="ogg_muxer"
2942 opus_muxer_select="ogg_muxer"
2943 psp_muxer_select="mov_muxer"
2944 rtp_demuxer_select="sdp_demuxer"
2945 rtp_muxer_select="golomb"
2946 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2947 rtsp_demuxer_select="http_protocol rtpdec"
2948 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2949 sap_demuxer_select="sdp_demuxer"
2950 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2951 sdp_demuxer_select="rtpdec"
2952 smoothstreaming_muxer_select="ismv_muxer"
2953 spdif_muxer_select="aac_parser"
2954 spx_muxer_select="ogg_muxer"
2955 swf_demuxer_suggest="zlib"
2956 tak_demuxer_select="tak_parser"
2957 tg2_muxer_select="mov_muxer"
2958 tgp_muxer_select="mov_muxer"
2959 vobsub_demuxer_select="mpegps_demuxer"
2960 w64_demuxer_select="wav_demuxer"
2961 w64_muxer_select="wav_muxer"
2962 wav_demuxer_select="riffdec"
2963 wav_muxer_select="riffenc"
2964 webm_muxer_select="iso_media riffenc"
2965 webm_dash_manifest_demuxer_select="matroska_demuxer"
2966 wtv_demuxer_select="mpegts_demuxer riffdec"
2967 wtv_muxer_select="mpegts_muxer riffenc"
2968 xmv_demuxer_select="riffdec"
2969 xwma_demuxer_select="riffdec"
2970
2971 # indevs / outdevs
2972 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2973 alsa_outdev_deps="alsa_asoundlib_h"
2974 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2975 avfoundation_indev_select="avfoundation"
2976 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2977 caca_outdev_deps="libcaca"
2978 decklink_indev_deps="decklink pthreads"
2979 decklink_indev_extralibs="-lstdc++"
2980 decklink_outdev_deps="decklink pthreads"
2981 decklink_outdev_extralibs="-lstdc++"
2982 dshow_indev_deps="IBaseFilter"
2983 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2984 dv1394_indev_deps="dv1394"
2985 dv1394_indev_select="dv_demuxer"
2986 fbdev_indev_deps="linux_fb_h"
2987 fbdev_outdev_deps="linux_fb_h"
2988 gdigrab_indev_deps="CreateDIBSection"
2989 gdigrab_indev_extralibs="-lgdi32"
2990 gdigrab_indev_select="bmp_decoder"
2991 iec61883_indev_deps="libiec61883"
2992 jack_indev_deps="jack_jack_h"
2993 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2994 lavfi_indev_deps="avfilter"
2995 libcdio_indev_deps="libcdio"
2996 libdc1394_indev_deps="libdc1394"
2997 libv4l2_indev_deps="libv4l2"
2998 openal_indev_deps="openal"
2999 opengl_outdev_deps="opengl"
3000 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3001 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3002 pulse_indev_deps="libpulse"
3003 pulse_outdev_deps="libpulse"
3004 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3005 qtkit_indev_select="qtkit"
3006 sdl2_outdev_deps="sdl2"
3007 sndio_indev_deps="sndio_h"
3008 sndio_outdev_deps="sndio_h"
3009 v4l_indev_deps="linux_videodev_h"
3010 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3011 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3012 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3013 vfwcap_indev_extralibs="-lavicap32"
3014 x11grab_indev_deps="x11grab"
3015 x11grab_xcb_indev_deps="libxcb"
3016 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3017 xv_outdev_extralibs="-lXv -lX11 -lXext"
3018
3019 # protocols
3020 async_protocol_deps="threads"
3021 bluray_protocol_deps="libbluray"
3022 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3023 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3024 ffrtmpcrypt_protocol_select="tcp_protocol"
3025 ffrtmphttp_protocol_deps="!librtmp_protocol"
3026 ffrtmphttp_protocol_select="http_protocol"
3027 ftp_protocol_select="tcp_protocol"
3028 gopher_protocol_select="network"
3029 http_protocol_select="tcp_protocol"
3030 httpproxy_protocol_select="tcp_protocol"
3031 https_protocol_select="tls_protocol"
3032 icecast_protocol_select="http_protocol"
3033 librtmp_protocol_deps="librtmp"
3034 librtmpe_protocol_deps="librtmp"
3035 librtmps_protocol_deps="librtmp"
3036 librtmpt_protocol_deps="librtmp"
3037 librtmpte_protocol_deps="librtmp"
3038 libsmbclient_protocol_deps="libsmbclient gplv3"
3039 libssh_protocol_deps="libssh"
3040 mmsh_protocol_select="http_protocol"
3041 mmst_protocol_select="network"
3042 rtmp_protocol_deps="!librtmp_protocol"
3043 rtmp_protocol_select="tcp_protocol"
3044 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3045 rtmps_protocol_deps="!librtmp_protocol"
3046 rtmps_protocol_select="tls_protocol"
3047 rtmpt_protocol_select="ffrtmphttp_protocol"
3048 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3049 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3050 rtp_protocol_select="udp_protocol"
3051 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3052 sctp_protocol_select="network"
3053 srtp_protocol_select="rtp_protocol srtp"
3054 tcp_protocol_select="network"
3055 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3056 tls_gnutls_protocol_select="tcp_protocol"
3057 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3058 tls_openssl_protocol_select="tcp_protocol"
3059 tls_schannel_protocol_deps="schannel"
3060 tls_schannel_protocol_select="tcp_protocol"
3061 tls_securetransport_protocol_deps="securetransport"
3062 tls_securetransport_protocol_select="tcp_protocol"
3063 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3064 udp_protocol_select="network"
3065 udplite_protocol_select="network"
3066 unix_protocol_deps="sys_un_h"
3067 unix_protocol_select="network"
3068
3069 # filters
3070 afftfilt_filter_deps="avcodec"
3071 afftfilt_filter_select="fft"
3072 amovie_filter_deps="avcodec avformat"
3073 aresample_filter_deps="swresample"
3074 ass_filter_deps="libass"
3075 asyncts_filter_deps="avresample"
3076 atempo_filter_deps="avcodec"
3077 atempo_filter_select="rdft"
3078 azmq_filter_deps="libzmq"
3079 blackframe_filter_deps="gpl"
3080 boxblur_filter_deps="gpl"
3081 bs2b_filter_deps="libbs2b"
3082 colormatrix_filter_deps="gpl"
3083 cover_rect_filter_deps="avcodec avformat gpl"
3084 cropdetect_filter_deps="gpl"
3085 delogo_filter_deps="gpl"
3086 deshake_filter_select="pixelutils"
3087 drawtext_filter_deps="libfreetype"
3088 eq_filter_deps="gpl"
3089 fftfilt_filter_deps="avcodec"
3090 fftfilt_filter_select="rdft"
3091 find_rect_filter_deps="avcodec avformat gpl"
3092 firequalizer_filter_deps="avcodec"
3093 firequalizer_filter_select="rdft"
3094 flite_filter_deps="libflite"
3095 framerate_filter_select="pixelutils"
3096 frei0r_filter_deps="frei0r dlopen"
3097 frei0r_src_filter_deps="frei0r dlopen"
3098 fspp_filter_deps="gpl"
3099 geq_filter_deps="gpl"
3100 histeq_filter_deps="gpl"
3101 hqdn3d_filter_deps="gpl"
3102 interlace_filter_deps="gpl"
3103 kerndeint_filter_deps="gpl"
3104 ladspa_filter_deps="ladspa dlopen"
3105 mcdeint_filter_deps="avcodec gpl"
3106 movie_filter_deps="avcodec avformat"
3107 mpdecimate_filter_deps="gpl"
3108 mpdecimate_filter_select="pixelutils"
3109 mptestsrc_filter_deps="gpl"
3110 negate_filter_deps="lut_filter"
3111 nnedi_filter_deps="gpl"
3112 ocr_filter_deps="libtesseract"
3113 ocv_filter_deps="libopencv"
3114 owdenoise_filter_deps="gpl"
3115 pan_filter_deps="swresample"
3116 perspective_filter_deps="gpl"
3117 phase_filter_deps="gpl"
3118 pp7_filter_deps="gpl"
3119 pp_filter_deps="gpl postproc"
3120 pullup_filter_deps="gpl"
3121 removelogo_filter_deps="avcodec avformat swscale"
3122 repeatfields_filter_deps="gpl"
3123 resample_filter_deps="avresample"
3124 rubberband_filter_deps="librubberband"
3125 sab_filter_deps="gpl swscale"
3126 scale2ref_filter_deps="swscale"
3127 scale_filter_deps="swscale"
3128 select_filter_select="pixelutils"
3129 showcqt_filter_deps="avcodec avformat swscale"
3130 showcqt_filter_select="fft"
3131 showfreqs_filter_deps="avcodec"
3132 showfreqs_filter_select="fft"
3133 showspectrum_filter_deps="avcodec"
3134 showspectrum_filter_select="fft"
3135 showspectrumpic_filter_deps="avcodec"
3136 showspectrumpic_filter_select="fft"
3137 smartblur_filter_deps="gpl swscale"
3138 sofalizer_filter_deps="netcdf avcodec"
3139 sofalizer_filter_select="fft"
3140 spectrumsynth_filter_deps="avcodec"
3141 spectrumsynth_filter_select="fft"
3142 spp_filter_deps="gpl avcodec"
3143 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3144 stereo3d_filter_deps="gpl"
3145 subtitles_filter_deps="avformat avcodec libass"
3146 super2xsai_filter_deps="gpl"
3147 pixfmts_super2xsai_test_deps="super2xsai_filter"
3148 tinterlace_filter_deps="gpl"
3149 tinterlace_merge_test_deps="tinterlace_filter"
3150 tinterlace_pad_test_deps="tinterlace_filter"
3151 uspp_filter_deps="gpl avcodec"
3152 vaguedenoiser_filter_deps="gpl"
3153 vidstabdetect_filter_deps="libvidstab"
3154 vidstabtransform_filter_deps="libvidstab"
3155 zmq_filter_deps="libzmq"
3156 zoompan_filter_deps="swscale"
3157 zscale_filter_deps="libzimg"
3158 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3159
3160 # examples
3161 avio_dir_cmd_deps="avformat avutil"
3162 avio_reading_deps="avformat avcodec avutil"
3163 decoding_encoding_example_deps="avcodec avformat avutil"
3164 demuxing_decoding_example_deps="avcodec avformat avutil"
3165 extract_mvs_example_deps="avcodec avformat avutil"
3166 filter_audio_example_deps="avfilter avutil"
3167 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3168 filtering_video_example_deps="avfilter avcodec avformat avutil"
3169 http_multiclient_example_deps="avformat avutil fork"
3170 metadata_example_deps="avformat avutil"
3171 muxing_example_deps="avcodec avformat avutil swscale"
3172 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3173 remuxing_example_deps="avcodec avformat avutil"
3174 resampling_audio_example_deps="avutil swresample"
3175 scaling_video_example_deps="avutil swscale"
3176 transcode_aac_example_deps="avcodec avformat swresample"
3177 transcoding_example_deps="avfilter avcodec avformat avutil"
3178
3179 # libraries, in linking order
3180 avcodec_deps="avutil"
3181 avdevice_deps="avformat avcodec avutil"
3182 avfilter_deps="avutil"
3183 avformat_deps="avcodec avutil"
3184 avresample_deps="avutil"
3185 postproc_deps="avutil gpl"
3186 swresample_deps="avutil"
3187 swscale_deps="avutil"
3188
3189 # programs
3190 ffmpeg_deps="avcodec avfilter avformat swresample"
3191 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3192                null_filter
3193                setpts_filter trim_filter"
3194 ffplay_deps="avcodec avformat swscale swresample sdl2"
3195 ffplay_libs='$sdl2_libs'
3196 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3197 ffprobe_deps="avcodec avformat"
3198 ffserver_deps="avformat fork sarestart"
3199 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3200
3201 # documentation
3202 podpages_deps="perl"
3203 manpages_deps="perl pod2man"
3204 htmlpages_deps="perl"
3205 htmlpages_deps_any="makeinfo_html texi2html"
3206 txtpages_deps="perl makeinfo"
3207 doc_deps_any="manpages htmlpages podpages txtpages"
3208
3209 # default parameters
3210
3211 logfile="config.log"
3212
3213 # installation paths
3214 prefix_default="/usr/local"
3215 bindir_default='${prefix}/bin'
3216 datadir_default='${prefix}/share/ffmpeg'
3217 docdir_default='${prefix}/share/doc/ffmpeg'
3218 incdir_default='${prefix}/include'
3219 libdir_default='${prefix}/lib'
3220 mandir_default='${prefix}/share/man'
3221
3222 # toolchain
3223 ar_default="ar"
3224 cc_default="gcc"
3225 cxx_default="g++"
3226 host_cc_default="gcc"
3227 cp_f="cp -f"
3228 doxygen_default="doxygen"
3229 install="install"
3230 ln_s_default="ln -s -f"
3231 nm_default="nm -g"
3232 objformat="elf"
3233 pkg_config_default=pkg-config
3234 ranlib_default="ranlib"
3235 strip_default="strip"
3236 version_script='--version-script'
3237 yasmexe_default="yasm"
3238 windres_default="windres"
3239
3240 # OS
3241 target_os_default=$(tolower $(uname -s))
3242 host_os=$target_os_default
3243
3244 # machine
3245 if test "$target_os_default" = aix; then
3246     arch_default=$(uname -p)
3247     strip_default="strip -X32_64"
3248 else
3249     arch_default=$(uname -m)
3250 fi
3251 cpu="generic"
3252 intrinsics="none"
3253
3254 # configurable options
3255 enable $PROGRAM_LIST
3256 enable $DOCUMENT_LIST
3257 enable $EXAMPLE_LIST
3258 enable $(filter_out avresample $LIBRARY_LIST)
3259 enable stripping
3260
3261 enable asm
3262 enable debug
3263 enable doc
3264 enable faan faandct faanidct
3265 enable optimizations
3266 enable runtime_cpudetect
3267 enable safe_bitstream_reader
3268 enable static
3269 enable swscale_alpha
3270 enable valgrind_backtrace
3271
3272 sws_max_filter_size_default=256
3273 set_default sws_max_filter_size
3274
3275 # build settings
3276 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3277 LIBPREF="lib"
3278 LIBSUF=".a"
3279 FULLNAME='$(NAME)$(BUILDSUF)'
3280 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3281 SLIBPREF="lib"
3282 SLIBSUF=".so"
3283 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3284 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3285 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3286 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3287 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3288 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3289 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3290
3291 asflags_filter=echo
3292 cflags_filter=echo
3293 ldflags_filter=echo
3294
3295 AS_C='-c'
3296 AS_O='-o $@'
3297 CC_C='-c'
3298 CC_E='-E -o $@'
3299 CC_O='-o $@'
3300 CXX_C='-c'
3301 CXX_O='-o $@'
3302 OBJCC_C='-c'
3303 OBJCC_E='-E -o $@'
3304 OBJCC_O='-o $@'
3305 LD_O='-o $@'
3306 LD_LIB='-l%'
3307 LD_PATH='-L'
3308 HOSTCC_C='-c'
3309 HOSTCC_E='-E -o $@'
3310 HOSTCC_O='-o $@'
3311 HOSTLD_O='-o $@'
3312
3313 host_libs='-lm'
3314 host_cflags_filter=echo
3315 host_ldflags_filter=echo
3316
3317 target_path='$(CURDIR)'
3318
3319 # since the object filename is not given with the -MM flag, the compiler
3320 # is only able to print the basename, and we must add the path ourselves
3321 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3322 DEPFLAGS='-MM'
3323
3324 # find source path
3325 if test -f configure; then
3326     source_path=.
3327 else
3328     source_path=$(cd $(dirname "$0"); pwd)
3329     case "$source_path" in
3330         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3331     esac
3332     test -e "$source_path/config.h" &&
3333         die "Out of tree builds are impossible with config.h in source dir."
3334 fi
3335
3336 for v in "$@"; do
3337     r=${v#*=}
3338     l=${v%"$r"}
3339     r=$(sh_quote "$r")
3340     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3341 done
3342
3343 find_things(){
3344     thing=$1
3345     pattern=$2
3346     file=$source_path/$3
3347     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3348 }
3349
3350 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3351 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3352 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3353 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3354 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3355 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3356 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3357 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3358 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3359
3360 find_things_extern(){
3361     thing=$1
3362     pattern=$2
3363     file=$source_path/$3
3364     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3365 }
3366
3367 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3368 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3369
3370 ALL_COMPONENTS="
3371     $BSF_LIST
3372     $DECODER_LIST
3373     $DEMUXER_LIST
3374     $ENCODER_LIST
3375     $FILTER_LIST
3376     $HWACCEL_LIST
3377     $INDEV_LIST
3378     $MUXER_LIST
3379     $OUTDEV_LIST
3380     $PARSER_LIST
3381     $PROTOCOL_LIST
3382 "
3383
3384 for n in $COMPONENT_LIST; do
3385     v=$(toupper ${n%s})_LIST
3386     eval enable \$$v
3387     eval ${n}_if_any="\$$v"
3388 done
3389
3390 enable $ARCH_EXT_LIST
3391
3392 die_unknown(){
3393     echo "Unknown option \"$1\"."
3394     echo "See $0 --help for available options."
3395     exit 1
3396 }
3397
3398 print_in_columns() {
3399     cols=$(expr $ncols / 24)
3400     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3401 }
3402
3403 show_list() {
3404     suffix=_$1
3405     shift
3406     echo $* | sed s/$suffix//g | print_in_columns
3407     exit 0
3408 }
3409
3410 rand_list(){
3411     IFS=', '
3412     set -- $*
3413     unset IFS
3414     for thing; do
3415         comp=${thing%:*}
3416         prob=${thing#$comp}
3417         prob=${prob#:}
3418         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3419         echo "prob ${prob:-0.5}"
3420         printf '%s\n' $comp
3421     done
3422 }
3423
3424 do_random(){
3425     action=$1
3426     shift
3427     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3428     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3429 }
3430
3431 for opt do
3432     optval="${opt#*=}"
3433     case "$opt" in
3434         --extra-ldflags=*)
3435             add_ldflags $optval
3436         ;;
3437         --extra-ldexeflags=*)
3438             add_ldexeflags $optval
3439         ;;
3440         --extra-ldlibflags=*)
3441             add_ldlibflags $optval
3442         ;;
3443         --extra-libs=*)
3444             add_extralibs $optval
3445         ;;
3446         --disable-devices)
3447             disable $INDEV_LIST $OUTDEV_LIST
3448         ;;
3449         --enable-debug=*)
3450             debuglevel="$optval"
3451         ;;
3452         --disable-programs)
3453             disable $PROGRAM_LIST
3454         ;;
3455         --disable-everything)
3456             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3457         ;;
3458         --disable-all)
3459             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3460             disable $LIBRARY_LIST $PROGRAM_LIST doc
3461             enable avutil
3462         ;;
3463         --enable-random|--disable-random)
3464             action=${opt%%-random}
3465             do_random ${action#--} $COMPONENT_LIST
3466         ;;
3467         --enable-random=*|--disable-random=*)
3468             action=${opt%%-random=*}
3469             do_random ${action#--} $optval
3470         ;;
3471         --enable-*=*|--disable-*=*)
3472             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3473             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3474             eval list=\$$(toupper $thing)_LIST
3475             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3476             list=$(filter "$name" $list)
3477             [ "$list" = "" ] && warn "Option $opt did not match anything"
3478             $action $list
3479         ;;
3480         --enable-?*|--disable-?*)
3481             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3482             if is_in $option $COMPONENT_LIST; then
3483                 test $action = disable && action=unset
3484                 eval $action \$$(toupper ${option%s})_LIST
3485             elif is_in $option $CMDLINE_SELECT; then
3486                 $action $option
3487             else
3488                 die_unknown $opt
3489             fi
3490         ;;
3491         --list-*)
3492             NAME="${opt#--list-}"
3493             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3494             NAME=${NAME%s}
3495             eval show_list $NAME \$$(toupper $NAME)_LIST
3496         ;;
3497         --help|-h) show_help
3498         ;;
3499         --fatal-warnings) enable fatal_warnings
3500         ;;
3501         *)
3502             optname="${opt%%=*}"
3503             optname="${optname#--}"
3504             optname=$(echo "$optname" | sed 's/-/_/g')
3505             if is_in $optname $CMDLINE_SET; then
3506                 eval $optname='$optval'
3507             elif is_in $optname $CMDLINE_APPEND; then
3508                 append $optname "$optval"
3509             else
3510                 die_unknown $opt
3511             fi
3512         ;;
3513     esac
3514 done
3515
3516 for e in $env; do
3517     eval "export $e"
3518 done
3519
3520 # Mark specifically enabled, but normally autodetected libraries as requested.
3521 for lib in $AUTODETECT_LIBS; do
3522     enabled $lib && request $lib
3523 done
3524
3525 # Enable platform codecs by default.
3526 enable_weak audiotoolbox
3527
3528 # Enable hwaccels by default.
3529 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3530 enable_weak xlib
3531
3532 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3533
3534 disabled logging && logfile=/dev/null
3535
3536 # Disable all the library-specific components if the library itself
3537 # is disabled, see AVCODEC_LIST and following _LIST variables.
3538
3539 disable_components(){
3540     disabled ${1} && disable $(
3541         eval components="\$$(toupper ${1})_COMPONENTS"
3542         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3543     )
3544 }
3545
3546 map 'disable_components $v' $LIBRARY_LIST
3547
3548 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3549 set >> $logfile
3550
3551 test -n "$valgrind" && toolchain="valgrind-memcheck"
3552
3553 case "$toolchain" in
3554     *-asan)
3555         cc_default="${toolchain%-asan}"
3556         add_cflags  -fsanitize=address
3557         add_ldflags -fsanitize=address
3558     ;;
3559     *-msan)
3560         cc_default="${toolchain%-msan}"
3561         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3562         add_ldflags -fsanitize=memory
3563     ;;
3564     *-tsan)
3565         cc_default="${toolchain%-tsan}"
3566         add_cflags  -fsanitize=thread -fPIE
3567         add_ldflags -fsanitize=thread -pie
3568         case "$toolchain" in
3569             gcc-tsan)
3570                 add_cflags  -fPIC
3571                 add_ldflags -fPIC
3572                 ;;
3573         esac
3574     ;;
3575     *-usan)
3576         cc_default="${toolchain%-usan}"
3577         add_cflags  -fsanitize=undefined
3578         add_ldflags -fsanitize=undefined
3579     ;;
3580     valgrind-*)
3581         target_exec_default="valgrind"
3582         case "$toolchain" in
3583             valgrind-massif)
3584                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3585                 ;;
3586             valgrind-memcheck)
3587                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3588                 ;;
3589         esac
3590     ;;
3591     msvc)
3592         # Check whether the current MSVC version needs the C99 converter.
3593         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3594         # support enough of C99 to build ffmpeg. Default to the new
3595         # behaviour if the regexp was unable to match anything, since this
3596         # successfully parses the version number of existing supported
3597         # versions that require the converter (MSVC 2010 and 2012).
3598         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3599         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3600             cc_default="cl"
3601         else
3602             cc_default="c99wrap cl"
3603         fi
3604         ld_default="$source_path/compat/windows/mslink"
3605         nm_default="dumpbin -symbols"
3606         ar_default="lib"
3607         case "$arch" in
3608         arm*)
3609             as_default="armasm"
3610             ;;
3611         esac
3612         target_os_default="win32"
3613         # Use a relative path for TMPDIR. This makes sure all the
3614         # ffconf temp files are written with a relative path, avoiding
3615         # issues with msys/win32 path conversion for MSVC parameters
3616         # such as -Fo<file> or -out:<file>.
3617         TMPDIR=.
3618     ;;
3619     icl)
3620         cc_default="icl"
3621         ld_default="xilink"
3622         nm_default="dumpbin -symbols"
3623         ar_default="xilib"
3624         target_os_default="win32"
3625         TMPDIR=.
3626     ;;
3627     gcov)
3628         add_cflags  -fprofile-arcs -ftest-coverage
3629         add_ldflags -fprofile-arcs -ftest-coverage
3630     ;;
3631     llvm-cov)
3632         add_cflags -fprofile-arcs -ftest-coverage
3633         add_ldflags --coverage
3634     ;;
3635     hardened)
3636         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3637         add_cflags   -fno-strict-overflow -fstack-protector-all
3638         add_ldflags  -Wl,-z,relro -Wl,-z,now
3639         add_cflags   -fPIE
3640         add_ldexeflags -fPIE -pie
3641     ;;
3642     ?*)
3643         die "Unknown toolchain $toolchain"
3644     ;;
3645 esac
3646
3647 test -n "$cross_prefix" && enable cross_compile
3648
3649 if enabled cross_compile; then
3650     test -n "$arch" && test -n "$target_os" ||
3651         die "Must specify target arch and OS when cross-compiling"
3652 fi
3653
3654 ar_default="${cross_prefix}${ar_default}"
3655 cc_default="${cross_prefix}${cc_default}"
3656 cxx_default="${cross_prefix}${cxx_default}"
3657 nm_default="${cross_prefix}${nm_default}"
3658 pkg_config_default="${cross_prefix}${pkg_config_default}"
3659 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3660     ranlib_default="${cross_prefix}${ranlib_default} -D"
3661 else
3662     ranlib_default="${cross_prefix}${ranlib_default}"
3663 fi
3664 strip_default="${cross_prefix}${strip_default}"
3665 windres_default="${cross_prefix}${windres_default}"
3666
3667 sysinclude_default="${sysroot}/usr/include"
3668
3669 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3670     target_exec target_os yasmexe
3671 enabled cross_compile || host_cc_default=$cc
3672 set_default host_cc
3673
3674 pkg_config_fail_message=""
3675 if ! $pkg_config --version >/dev/null 2>&1; then
3676     warn "$pkg_config not found, library detection may fail."
3677     pkg_config=false
3678 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3679     pkg_config_fail_message="
3680 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3681 fi
3682
3683 if test $doxygen != $doxygen_default && \
3684   ! $doxygen --version >/dev/null 2>&1; then
3685     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3686 fi
3687
3688 exesuf() {
3689     case $1 in
3690         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3691     esac
3692 }
3693
3694 EXESUF=$(exesuf $target_os)
3695 HOSTEXESUF=$(exesuf $host_os)
3696
3697 # set temporary file name
3698 : ${TMPDIR:=$TEMPDIR}
3699 : ${TMPDIR:=$TMP}
3700 : ${TMPDIR:=/tmp}
3701
3702 if [ -n "$tempprefix" ] ; then
3703     mktemp(){
3704         echo $tempprefix.${HOSTNAME}.${UID}
3705     }
3706 elif ! check_cmd mktemp -u XXXXXX; then
3707     # simple replacement for missing mktemp
3708     # NOT SAFE FOR GENERAL USE
3709     mktemp(){
3710         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3711     }
3712 fi
3713
3714 tmpfile(){
3715     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3716         (set -C; exec > $tmp) 2>/dev/null ||
3717         die "Unable to create temporary file in $TMPDIR."
3718     append TMPFILES $tmp
3719     eval $1=$tmp
3720 }
3721
3722 trap 'rm -f -- $TMPFILES' EXIT
3723
3724 tmpfile TMPASM .asm
3725 tmpfile TMPC   .c
3726 tmpfile TMPCPP .cpp
3727 tmpfile TMPE   $EXESUF
3728 tmpfile TMPH   .h
3729 tmpfile TMPM   .m
3730 tmpfile TMPO   .o
3731 tmpfile TMPS   .S
3732 tmpfile TMPSH  .sh
3733 tmpfile TMPV   .ver
3734
3735 unset -f mktemp
3736
3737 chmod +x $TMPE
3738
3739 # make sure we can execute files in $TMPDIR
3740 cat > $TMPSH 2>> $logfile <<EOF
3741 #! /bin/sh
3742 EOF
3743 chmod +x $TMPSH >> $logfile 2>&1
3744 if ! $TMPSH >> $logfile 2>&1; then
3745     cat <<EOF
3746 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3747 variable to another directory and make sure that it is not mounted noexec.
3748 EOF
3749     die "Sanity test failed."
3750 fi
3751
3752 armasm_flags(){
3753     for flag; do
3754         case $flag in
3755             # Filter out MSVC cl.exe options from cflags that shouldn't
3756             # be passed to gas-preprocessor
3757             -M[TD]*)                                            ;;
3758             *)                  echo $flag                      ;;
3759         esac
3760    done
3761 }
3762
3763 ccc_flags(){
3764     for flag; do
3765         case $flag in
3766             -std=c99)           echo -c99                       ;;
3767             -mcpu=*)            echo -arch ${flag#*=}           ;;
3768             -mieee)             echo -ieee                      ;;
3769             -O*|-fast)          echo $flag                      ;;
3770             -fno-math-errno)    echo -assume nomath_errno       ;;
3771             -g)                 echo -g3                        ;;
3772             -Wall)              echo -msg_enable level2         ;;
3773             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3774             -Wl,*)              echo $flag                      ;;
3775             -f*|-W*)                                            ;;
3776             *)                  echo $flag                      ;;
3777         esac
3778    done
3779 }
3780
3781 cparser_flags(){
3782     for flag; do
3783         case $flag in
3784             -Wno-switch)             echo -Wno-switch-enum ;;
3785             -Wno-format-zero-length) ;;
3786             -Wdisabled-optimization) ;;
3787             -Wno-pointer-sign)       echo -Wno-other ;;
3788             *)                       echo $flag ;;
3789         esac
3790     done
3791 }
3792
3793 msvc_common_flags(){
3794     for flag; do
3795         case $flag in
3796             # In addition to specifying certain flags under the compiler
3797             # specific filters, they must be specified here as well or else the
3798             # generic catch all at the bottom will print the original flag.
3799             -Wall)                ;;
3800             -std=c99)             ;;
3801             # Common flags
3802             -fomit-frame-pointer) ;;
3803             -g)                   echo -Z7 ;;
3804             -fno-math-errno)      ;;
3805             -fno-common)          ;;
3806             -fno-signed-zeros)    ;;
3807             -fPIC)                ;;
3808             -mthumb)              ;;
3809             -march=*)             ;;
3810             -lz)                  echo zlib.lib ;;
3811             -lavifil32)           echo vfw32.lib ;;
3812             -lavicap32)           echo vfw32.lib user32.lib ;;
3813             -lx264)               echo libx264.lib ;;
3814             -l*)                  echo ${flag#-l}.lib ;;
3815             -LARGEADDRESSAWARE)   echo $flag ;;
3816             -L*)                  echo -libpath:${flag#-L} ;;
3817             *)                    echo $flag ;;
3818         esac
3819     done
3820 }
3821
3822 msvc_flags(){
3823     msvc_common_flags "$@"
3824     for flag; do
3825         case $flag in
3826             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3827                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3828                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3829                                        -wd4307 \
3830                                        -wd4273 -wd4554 -wd4701 ;;
3831         esac
3832     done
3833 }
3834
3835 icl_flags(){
3836     msvc_common_flags "$@"
3837     for flag; do
3838         case $flag in
3839             # Despite what Intel's documentation says -Wall, which is supported
3840             # on Windows, does enable remarks so disable them here.
3841             -Wall)                echo $flag -Qdiag-disable:remark ;;
3842             -std=c99)             echo -Qstd=c99 ;;
3843             -flto)                echo -ipo ;;
3844         esac
3845     done
3846 }
3847
3848 icc_flags(){
3849     for flag; do
3850         case $flag in
3851             -flto)                echo -ipo ;;
3852             *)                    echo $flag ;;
3853         esac
3854     done
3855 }
3856
3857 pgi_flags(){
3858     for flag; do
3859         case $flag in
3860             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3861             -fomit-frame-pointer) echo -Mnoframe ;;
3862             -g)                   echo -gopt ;;
3863             *)                    echo $flag ;;
3864         esac
3865     done
3866 }
3867
3868 suncc_flags(){
3869     for flag; do
3870         case $flag in
3871             -march=*|-mcpu=*)
3872                 case "${flag#*=}" in
3873                     native)                   echo -xtarget=native       ;;
3874                     v9|niagara)               echo -xarch=sparc          ;;
3875                     ultrasparc)               echo -xarch=sparcvis       ;;
3876                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3877                     i586|pentium)             echo -xchip=pentium        ;;
3878                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3879                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3880                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3881                     pentium4*)          echo -xtarget=pentium4           ;;
3882                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3883                     *-sse3)             echo -xarch=sse3                 ;;
3884                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3885                     bonnell)                   echo -xarch=ssse3         ;;
3886                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3887                     westmere)                  echo -xtarget=westmere    ;;
3888                     silvermont)                echo -xarch=sse4_2        ;;
3889                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3890                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3891                                                echo -xarch=avx           ;;
3892                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3893                     btver1)                    echo -xarch=amdsse4a      ;;
3894                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3895                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3896                     k8|opteron|athlon64|athlon-fx)
3897                                                echo -xarch=sse2a         ;;
3898                     athlon*)                   echo -xarch=pentium_proa  ;;
3899                 esac
3900                 ;;
3901             -std=c99)             echo -xc99              ;;
3902             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3903             -fPIC)                echo -KPIC -xcode=pic32 ;;
3904             -W*,*)                echo $flag              ;;
3905             -f*-*|-W*|-mimpure-text)                      ;;
3906             -shared)              echo -G                 ;;
3907             *)                    echo $flag              ;;
3908         esac
3909     done
3910 }
3911
3912 tms470_flags(){
3913     for flag; do
3914         case $flag in
3915             -march=*|-mcpu=*)
3916                 case "${flag#*=}" in
3917                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3918                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3919                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3920                     armv6*|arm11*)          echo -mv=6   ;;
3921                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3922                                             echo -mv=5e  ;;
3923                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3924                 esac
3925                 ;;
3926             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3927             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3928             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3929             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3930             -msoft-float)   echo --float_support=vfplib       ;;
3931             -O[0-3]|-mf=*)  echo $flag                        ;;
3932             -g)             echo -g -mn                       ;;
3933             -pds=*)         echo $flag                        ;;
3934             -D*|-I*)        echo $flag                        ;;
3935             --gcc|--abi=*)  echo $flag                        ;;
3936             -me)            echo $flag                        ;;
3937         esac
3938     done
3939 }
3940
3941 probe_cc(){
3942     pfx=$1
3943     _cc=$2
3944     first=$3
3945
3946     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3947     unset _ld_o _ldflags _ld_lib _ld_path
3948     unset _depflags _DEPCMD _DEPFLAGS
3949     _flags_filter=echo
3950
3951     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3952         true # no-op to avoid reading stdin in following checks
3953     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3954         _type=llvm_gcc
3955         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3956         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3957         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3958         _cflags_speed='-O3'
3959         _cflags_size='-Os'
3960     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3961         _type=gcc
3962         gcc_version=$($_cc --version | head -n1)
3963         gcc_basever=$($_cc -dumpversion)
3964         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3965         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3966         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3967         case $gcc_basever in
3968             2) ;;
3969             2.*) ;;
3970             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3971         esac
3972         if [ "$first" = true ]; then
3973             case $gcc_basever in
3974                 4.2*)
3975                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3976             esac
3977         fi
3978         _cflags_speed='-O3'
3979         _cflags_size='-Os'
3980     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3981         _type=icc
3982         _ident=$($_cc --version | head -n1)
3983         _depflags='-MMD'
3984         _cflags_speed='-O3'
3985         _cflags_size='-Os'
3986         _cflags_noopt='-O1'
3987         _flags_filter=icc_flags
3988     elif $_cc -v 2>&1 | grep -q xlc; then
3989         _type=xlc
3990         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3991         _cflags_speed='-O5'
3992         _cflags_size='-O5 -qcompact'
3993     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3994         _type=ccc
3995         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3996         _DEPFLAGS='-M'
3997         _cflags_speed='-fast'
3998         _cflags_size='-O1'
3999         _flags_filter=ccc_flags
4000     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4001         test -d "$sysroot" || die "No valid sysroot specified."
4002         _type=armcc
4003         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4004         armcc_conf="$PWD/armcc.conf"
4005         $_cc --arm_linux_configure                 \
4006              --arm_linux_config_file="$armcc_conf" \
4007              --configure_sysroot="$sysroot"        \
4008              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4009              die "Error creating armcc configuration file."
4010         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4011         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4012         as_default="${cross_prefix}gcc"
4013         _depflags='-MMD'
4014         _cflags_speed='-O3'
4015         _cflags_size='-Os'
4016     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4017         _type=tms470
4018         _ident=$($_cc -version | head -n1 | tr -s ' ')
4019         _flags='--gcc --abi=eabi -me'
4020         _cc_e='-ppl -fe=$@'
4021         _cc_o='-fe=$@'
4022         _depflags='-ppa -ppd=$(@:.o=.d)'
4023         _cflags_speed='-O3 -mf=5'
4024         _cflags_size='-O3 -mf=2'
4025         _flags_filter=tms470_flags
4026     elif $_cc -v 2>&1 | grep -q clang; then
4027         _type=clang
4028         _ident=$($_cc --version 2>/dev/null | head -n1)
4029         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4030         _cflags_speed='-O3'
4031         _cflags_size='-Os'
4032     elif $_cc -V 2>&1 | grep -q Sun; then
4033         _type=suncc
4034         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4035         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4036         _DEPFLAGS='-xM1 -xc99'
4037         _ldflags='-std=c99'
4038         _cflags_speed='-O5'
4039         _cflags_size='-O5 -xspace'
4040         _flags_filter=suncc_flags
4041     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4042         _type=pathscale
4043         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4044         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4045         _cflags_speed='-O2'
4046         _cflags_size='-Os'
4047         _flags_filter='filter_out -Wdisabled-optimization'
4048     elif $_cc -v 2>&1 | grep -q Open64; then
4049         _type=open64
4050         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4051         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4052         _cflags_speed='-O2'
4053         _cflags_size='-Os'
4054         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4055     elif $_cc -V 2>&1 | grep -q Portland; then
4056         _type=pgi
4057         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4058         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4059         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4060         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4061         _cflags_noopt="-O"
4062         _flags_filter=pgi_flags
4063     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4064         _type=armasm
4065         _ident=$($_cc | head -n1)
4066         # 4509: "This form of conditional instruction is deprecated"
4067         _flags="-nologo -ignore 4509"
4068         _flags_filter=armasm_flags
4069     elif $_cc 2>&1 | grep -q Intel; then
4070         _type=icl
4071         _ident=$($_cc 2>&1 | head -n1)
4072         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4073         # Not only is O3 broken on 13.x+ but it is slower on all previous
4074         # versions (tested) as well.
4075         _cflags_speed="-O2"
4076         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4077         if $_cc 2>&1 | grep -q Linker; then
4078             _ld_o='-out:$@'
4079         else
4080             _ld_o='-Fe$@'
4081         fi
4082         _cc_o='-Fo$@'
4083         _cc_e='-P'
4084         _flags_filter=icl_flags
4085         _ld_lib='lib%.a'
4086         _ld_path='-libpath:'
4087         # -Qdiag-error to make icl error when seeing certain unknown arguments
4088         _flags='-nologo -Qdiag-error:4044,10157'
4089         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4090         # with MSVC which enables it by default.
4091         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4092         disable stripping
4093     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4094         _type=msvc
4095         _ident=$($_cc 2>&1 | head -n1)
4096         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4097         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4098         _cflags_speed="-O2"
4099         _cflags_size="-O1"
4100         if $_cc -nologo- 2>&1 | grep -q Linker; then
4101             _ld_o='-out:$@'
4102         else
4103             _ld_o='-Fe$@'
4104         fi
4105         _cc_o='-Fo$@'
4106         _cc_e='-P -Fi$@'
4107         _flags_filter=msvc_flags
4108         _ld_lib='lib%.a'
4109         _ld_path='-libpath:'
4110         _flags='-nologo'
4111         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4112         disable stripping
4113     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4114         _type=cparser
4115         _ident=$($_cc --version | head -n1)
4116         _depflags='-MMD'
4117         _cflags_speed='-O4'
4118         _cflags_size='-O2'
4119         _flags_filter=cparser_flags
4120     fi
4121
4122     eval ${pfx}_type=\$_type
4123     eval ${pfx}_ident=\$_ident
4124 }
4125
4126 set_ccvars(){
4127     eval ${1}_C=\${_cc_c-\${${1}_C}}
4128     eval ${1}_E=\${_cc_e-\${${1}_E}}
4129     eval ${1}_O=\${_cc_o-\${${1}_O}}
4130
4131     if [ -n "$_depflags" ]; then
4132         eval ${1}_DEPFLAGS=\$_depflags
4133     else
4134         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4135         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4136         eval DEP${1}FLAGS=\$_flags
4137     fi
4138 }
4139
4140 probe_cc cc "$cc" "true"
4141 cflags_filter=$_flags_filter
4142 cflags_speed=$_cflags_speed
4143 cflags_size=$_cflags_size
4144 cflags_noopt=$_cflags_noopt
4145 add_cflags $_flags $_cflags
4146 cc_ldflags=$_ldflags
4147 set_ccvars CC
4148
4149 probe_cc hostcc "$host_cc"
4150 host_cflags_filter=$_flags_filter
4151 add_host_cflags  $_flags $_cflags
4152 set_ccvars HOSTCC
4153
4154 test -n "$cc_type" && enable $cc_type ||
4155     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4156
4157 : ${as_default:=$cc}
4158 : ${objcc_default:=$cc}
4159 : ${dep_cc_default:=$cc}
4160 : ${ld_default:=$cc}
4161 : ${host_ld_default:=$host_cc}
4162 set_default ar as objcc dep_cc ld ln_s host_ld windres
4163
4164 probe_cc as "$as"
4165 asflags_filter=$_flags_filter
4166 add_asflags $_flags $_cflags
4167 set_ccvars AS
4168
4169 probe_cc objcc "$objcc"
4170 objcflags_filter=$_flags_filter
4171 add_objcflags $_flags $_cflags
4172 set_ccvars OBJC
4173
4174 probe_cc ld "$ld"
4175 ldflags_filter=$_flags_filter
4176 add_ldflags $_flags $_ldflags
4177 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4178 LD_O=${_ld_o-$LD_O}
4179 LD_LIB=${_ld_lib-$LD_LIB}
4180 LD_PATH=${_ld_path-$LD_PATH}
4181
4182 probe_cc hostld "$host_ld"
4183 host_ldflags_filter=$_flags_filter
4184 add_host_ldflags $_flags $_ldflags
4185 HOSTLD_O=${_ld_o-$HOSTLD_O}
4186
4187 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4188     probe_cc depcc "$dep_cc"
4189     CCDEP=${_DEPCMD:-$DEPCMD}
4190     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4191     DEPCCFLAGS=$_flags
4192 fi
4193
4194 if $ar 2>&1 | grep -q Microsoft; then
4195     arflags="-nologo"
4196     ar_o='-out:$@'
4197 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4198     arflags="rq"
4199     ar_o='$@'
4200 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4201     arflags='-Xany -r -c'
4202     ar_o='$@'
4203 elif $ar 2>&1 | grep -q "\[D\] "; then
4204     arflags="rcD"
4205     ar_o='$@'
4206 else
4207     arflags="rc"
4208     ar_o='$@'
4209 fi
4210
4211 add_cflags $extra_cflags
4212 add_cxxflags $extra_cxxflags
4213 add_objcflags $extra_objcflags
4214 add_asflags $extra_cflags
4215
4216 if test -n "$sysroot"; then
4217     case "$cc_type" in
4218         gcc|llvm_gcc|clang)
4219             add_cppflags --sysroot="$sysroot"
4220             add_ldflags --sysroot="$sysroot"
4221 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4222             add_cppflags -isysroot "$sysroot"
4223             add_ldflags -isysroot "$sysroot"
4224         ;;
4225         tms470)
4226             add_cppflags -I"$sysinclude"
4227             add_ldflags  --sysroot="$sysroot"
4228         ;;
4229     esac
4230 fi
4231
4232 if test "$cpu" = host; then
4233     enabled cross_compile &&
4234         die "--cpu=host makes no sense when cross-compiling."
4235
4236     case "$cc_type" in
4237         gcc|llvm_gcc)
4238             check_native(){
4239                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4240                 sed -n "/cc1.*$1=/{
4241                             s/.*$1=\\([^ ]*\\).*/\\1/
4242                             p
4243                             q
4244                         }" $TMPE
4245             }
4246             cpu=$(check_native -march || check_native -mcpu)
4247         ;;
4248         clang)
4249             check_native(){
4250                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4251                 sed -n "/cc1.*-target-cpu /{
4252                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4253                             p
4254                             q
4255                         }" $TMPE
4256             }
4257             cpu=$(check_native -march)
4258         ;;
4259     esac
4260
4261     test "${cpu:-host}" = host &&
4262         die "--cpu=host not supported with compiler $cc"
4263 fi
4264
4265 # Deal with common $arch aliases
4266 case "$arch" in
4267     aarch64|arm64)
4268         arch="aarch64"
4269     ;;
4270     arm*|iPad*|iPhone*)
4271         arch="arm"
4272     ;;
4273     mips*|IP*)
4274         case "$arch" in
4275         *el)
4276             add_cppflags -EL
4277             add_ldflags -EL
4278         ;;
4279         *eb)
4280             add_cppflags -EB
4281             add_ldflags -EB
4282         ;;
4283         esac
4284         arch="mips"
4285     ;;
4286     parisc*|hppa*)
4287         arch="parisc"
4288     ;;
4289     "Power Macintosh"|ppc*|powerpc*)
4290         arch="ppc"
4291     ;;
4292     s390|s390x)
4293         arch="s390"
4294     ;;
4295     sh4|sh)
4296         arch="sh4"
4297     ;;
4298     sun4*|sparc*)
4299         arch="sparc"
4300     ;;
4301     tilegx|tile-gx)
4302         arch="tilegx"
4303     ;;
4304     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4305         arch="x86"
4306     ;;
4307 esac
4308
4309 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4310 enable $arch
4311
4312 # Add processor-specific flags
4313 if enabled aarch64; then
4314
4315     case $cpu in
4316         armv*)
4317             cpuflags="-march=$cpu"
4318         ;;
4319         *)
4320             cpuflags="-mcpu=$cpu"
4321         ;;
4322     esac
4323
4324 elif enabled alpha; then
4325
4326     cpuflags="-mcpu=$cpu"
4327
4328 elif enabled arm; then
4329
4330     check_arm_arch() {
4331         check_cpp_condition stddef.h \
4332             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4333             $cpuflags
4334     }
4335
4336     probe_arm_arch() {
4337         if   check_arm_arch 4;        then echo armv4
4338         elif check_arm_arch 4T;       then echo armv4t
4339         elif check_arm_arch 5;        then echo armv5
4340         elif check_arm_arch 5E;       then echo armv5e
4341         elif check_arm_arch 5T;       then echo armv5t
4342         elif check_arm_arch 5TE;      then echo armv5te
4343         elif check_arm_arch 5TEJ;     then echo armv5te
4344         elif check_arm_arch 6;        then echo armv6
4345         elif check_arm_arch 6J;       then echo armv6j
4346         elif check_arm_arch 6K;       then echo armv6k
4347         elif check_arm_arch 6Z;       then echo armv6z
4348         elif check_arm_arch 6ZK;      then echo armv6zk
4349         elif check_arm_arch 6T2;      then echo armv6t2
4350         elif check_arm_arch 7;        then echo armv7
4351         elif check_arm_arch 7A  7_A;  then echo armv7-a
4352         elif check_arm_arch 7S;       then echo armv7-a
4353         elif check_arm_arch 7R  7_R;  then echo armv7-r
4354         elif check_arm_arch 7M  7_M;  then echo armv7-m
4355         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4356         elif check_arm_arch 8A  8_A;  then echo armv8-a
4357         fi
4358     }
4359
4360     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4361
4362     case $cpu in
4363         armv*)
4364             cpuflags="-march=$cpu"
4365             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4366         ;;
4367         *)
4368             cpuflags="-mcpu=$cpu"
4369             case $cpu in
4370                 cortex-a*)                               subarch=armv7a  ;;
4371                 cortex-r*)                               subarch=armv7r  ;;
4372                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4373                 arm11*)                                  subarch=armv6   ;;
4374                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4375                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4376                 *)                             subarch=$(probe_arm_arch) ;;
4377             esac
4378         ;;
4379     esac
4380
4381     case "$subarch" in
4382         armv5t*)    enable fast_clz                ;;
4383         armv[6-8]*)
4384             enable fast_clz
4385             disabled fast_unaligned || enable fast_unaligned
4386             ;;
4387     esac
4388
4389 elif enabled avr32; then
4390
4391     case $cpu in
4392         ap7[02]0[0-2])
4393             subarch="avr32_ap"
4394             cpuflags="-mpart=$cpu"
4395         ;;
4396         ap)
4397             subarch="avr32_ap"
4398             cpuflags="-march=$cpu"
4399         ;;
4400         uc3[ab]*)
4401             subarch="avr32_uc"
4402             cpuflags="-mcpu=$cpu"
4403         ;;
4404         uc)
4405             subarch="avr32_uc"
4406             cpuflags="-march=$cpu"
4407         ;;
4408     esac
4409
4410 elif enabled bfin; then
4411
4412     cpuflags="-mcpu=$cpu"
4413
4414 elif enabled mips; then
4415
4416     cpuflags="-march=$cpu"
4417
4418     if [ "$cpu" != "generic" ]; then
4419         disable mips32r2
4420         disable mips32r5
4421         disable mips64r2
4422         disable mips32r6
4423         disable mips64r6
4424         disable loongson2
4425         disable loongson3
4426
4427         case $cpu in
4428             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4429                 enable mips32r2
4430                 disable msa
4431             ;;
4432             p5600|i6400|p6600)
4433                 disable mipsdsp
4434                 disable mipsdspr2
4435             ;;
4436             loongson*)
4437                 enable loongson2
4438                 enable loongson3
4439                 enable local_aligned_8 local_aligned_16 local_aligned_32
4440                 enable simd_align_16
4441                 enable fast_64bit
4442                 enable fast_clz
4443                 enable fast_cmov
4444                 enable fast_unaligned
4445                 disable aligned_stack
4446                 disable mipsfpu
4447                 disable mipsdsp
4448                 disable mipsdspr2
4449                 case $cpu in
4450                     loongson3*)
4451                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4452                     ;;
4453                     loongson2e)
4454                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4455                     ;;
4456                     loongson2f)
4457                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4458                     ;;
4459                 esac
4460             ;;
4461             *)
4462                 # Unknown CPU. Disable everything.
4463                 warn "unknown CPU. Disabling all MIPS optimizations."
4464                 disable mipsfpu
4465                 disable mipsdsp
4466                 disable mipsdspr2
4467                 disable msa
4468                 disable mmi
4469             ;;
4470         esac
4471
4472         case $cpu in
4473             24kc)
4474                 disable mipsfpu
4475                 disable mipsdsp
4476                 disable mipsdspr2
4477             ;;
4478             24kf*)
4479                 disable mipsdsp
4480                 disable mipsdspr2
4481             ;;
4482             24kec|34kc|1004kc)
4483                 disable mipsfpu
4484                 disable mipsdspr2
4485             ;;
4486             24kef*|34kf*|1004kf*)
4487                 disable mipsdspr2
4488             ;;
4489             74kc)
4490                 disable mipsfpu
4491             ;;
4492             p5600)
4493                 enable mips32r5
4494                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4495             ;;
4496             i6400)
4497                 enable mips64r6
4498                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4499             ;;
4500             p6600)
4501                 enable mips64r6
4502                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4503             ;;
4504         esac
4505     else
4506         # We do not disable anything. Is up to the user to disable the unwanted features.
4507         warn 'generic cpu selected'
4508     fi
4509
4510 elif enabled ppc; then
4511
4512     disable ldbrx
4513
4514     case $(tolower $cpu) in
4515         601|ppc601|powerpc601)
4516             cpuflags="-mcpu=601"
4517             disable altivec
4518         ;;
4519         603*|ppc603*|powerpc603*)
4520             cpuflags="-mcpu=603"
4521             disable altivec
4522         ;;
4523         604*|ppc604*|powerpc604*)
4524             cpuflags="-mcpu=604"
4525             disable altivec
4526         ;;
4527         g3|75*|ppc75*|powerpc75*)
4528             cpuflags="-mcpu=750"
4529             disable altivec
4530         ;;
4531         g4|745*|ppc745*|powerpc745*)
4532             cpuflags="-mcpu=7450"
4533             disable vsx
4534         ;;
4535         74*|ppc74*|powerpc74*)
4536             cpuflags="-mcpu=7400"
4537             disable vsx
4538         ;;
4539         g5|970|ppc970|powerpc970)
4540             cpuflags="-mcpu=970"
4541             disable vsx
4542         ;;
4543         power[3-6]*)
4544             cpuflags="-mcpu=$cpu"
4545             disable vsx
4546         ;;
4547         power[7-8]*)
4548             cpuflags="-mcpu=$cpu"
4549         ;;
4550         cell)
4551             cpuflags="-mcpu=cell"
4552             enable ldbrx
4553             disable vsx
4554         ;;
4555         e500mc)
4556             cpuflags="-mcpu=e500mc"
4557             disable altivec
4558         ;;
4559         e500v2)
4560             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4561             disable altivec
4562             disable dcbzl
4563         ;;
4564         e500)
4565             cpuflags="-mcpu=8540 -mhard-float"
4566             disable altivec
4567             disable dcbzl
4568         ;;
4569     esac
4570
4571 elif enabled sparc; then
4572
4573     case $cpu in
4574         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4575             cpuflags="-mcpu=$cpu"
4576         ;;
4577         ultrasparc*|niagara[234])
4578             cpuflags="-mcpu=$cpu"
4579         ;;
4580     esac
4581
4582 elif enabled x86; then
4583
4584     case $cpu in
4585         i[345]86|pentium)
4586             cpuflags="-march=$cpu"
4587             disable i686
4588             disable mmx
4589         ;;
4590         # targets that do NOT support nopl and conditional mov (cmov)
4591         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4592             cpuflags="-march=$cpu"
4593             disable i686
4594         ;;
4595         # targets that do support nopl and conditional mov (cmov)
4596         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4597         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4598         |amdfam10|barcelona|b[dt]ver*|znver*)
4599             cpuflags="-march=$cpu"
4600             enable i686
4601             enable fast_cmov
4602         ;;
4603         # targets that do support conditional mov but on which it's slow
4604         pentium4|pentium4m|prescott|nocona)
4605             cpuflags="-march=$cpu"
4606             enable i686
4607             disable fast_cmov
4608         ;;
4609     esac
4610
4611 fi
4612
4613 if [ "$cpu" != generic ]; then
4614     add_cflags  $cpuflags
4615     add_asflags $cpuflags
4616     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4617 fi
4618
4619 # compiler sanity check
4620 check_exec <<EOF
4621 int main(void){ return 0; }
4622 EOF
4623 if test "$?" != 0; then
4624     echo "$cc is unable to create an executable file."
4625     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4626         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4627         echo "Only do this if you know what cross compiling means."
4628     fi
4629     die "C compiler test failed."
4630 fi
4631
4632 add_cppflags -D_ISOC99_SOURCE
4633 add_cxxflags -D__STDC_CONSTANT_MACROS
4634 add_cxxflags -std=c++98
4635
4636 # some compilers silently accept -std=c11, so we also need to check that the
4637 # version macro is defined properly
4638 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4639     add_cflags -std=c11
4640 else
4641     check_cflags -std=c99
4642 fi
4643
4644 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4645 #include <stdlib.h>
4646 EOF
4647 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4648 #include <stdlib.h>
4649 EOF
4650
4651 add_host_cppflags -D_ISOC99_SOURCE
4652 check_host_cflags -std=c99
4653 check_host_cflags -Wall
4654 check_host_cflags -O3
4655
4656 check_64bit(){
4657     arch32=$1
4658     arch64=$2
4659     expr=$3
4660     check_code cc "" "int test[2*($expr) - 1]" &&
4661         subarch=$arch64 || subarch=$arch32
4662 }
4663
4664 case "$arch" in
4665     aarch64|alpha|ia64)
4666         spic=$shared
4667     ;;
4668     mips)
4669         check_64bit mips mips64 '_MIPS_SIM > 1'
4670         spic=$shared
4671     ;;
4672     parisc)
4673         check_64bit parisc parisc64 'sizeof(void *) > 4'
4674         spic=$shared
4675     ;;
4676     ppc)
4677         check_64bit ppc ppc64 'sizeof(void *) > 4'
4678         spic=$shared
4679     ;;
4680     s390)
4681         check_64bit s390 s390x 'sizeof(void *) > 4'
4682         spic=$shared
4683     ;;
4684     sparc)
4685         check_64bit sparc sparc64 'sizeof(void *) > 4'
4686         spic=$shared
4687     ;;
4688     x86)
4689         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4690         # Treat x32 as x64 for now. Note it also needs spic=$shared
4691         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4692             subarch=x86_64
4693         if test "$subarch" = "x86_64"; then
4694             spic=$shared
4695         fi
4696     ;;
4697     ppc)
4698         check_cc <<EOF && subarch="ppc64"
4699         int test[(int)sizeof(char*) - 7];
4700 EOF
4701     ;;
4702 esac
4703
4704 enable $subarch
4705 enabled spic && enable_weak pic
4706
4707 # OS specific
4708 case $target_os in
4709     aix)
4710         SHFLAGS=-shared
4711         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4712         enabled shared && add_ldflags -Wl,-brtl
4713         ;;
4714     android)
4715         disable symver
4716         enable section_data_rel_ro
4717         SLIB_INSTALL_NAME='$(SLIBNAME)'
4718         SLIB_INSTALL_LINKS=
4719         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4720         ;;
4721     haiku)
4722         prefix_default="/boot/common"
4723         network_extralibs="-lnetwork"
4724         host_libs=
4725         ;;
4726     sunos)
4727         SHFLAGS='-shared -Wl,-h,$$(@F)'
4728         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4729         network_extralibs="-lsocket -lnsl"
4730         add_cppflags -D__EXTENSIONS__
4731         # When using suncc to build, the Solaris linker will mark
4732         # an executable with each instruction set encountered by
4733         # the Solaris assembler.  As our libraries contain their own
4734         # guards for processor-specific code, instead suppress
4735         # generation of the HWCAPS ELF section on Solaris x86 only.
4736         enabled_all suncc x86 &&
4737             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4738             add_ldflags -Wl,-M,mapfile
4739         nm_default='nm -P -g'
4740         version_script='-M'
4741         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4742         ;;
4743     netbsd)
4744         disable symver
4745         oss_indev_extralibs="-lossaudio"
4746         oss_outdev_extralibs="-lossaudio"
4747         enabled gcc || check_ldflags -Wl,-zmuldefs
4748         ;;
4749     openbsd|bitrig)
4750         disable symver
4751         SHFLAGS='-shared'
4752         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4753         SLIB_INSTALL_LINKS=
4754         oss_indev_extralibs="-lossaudio"
4755         oss_outdev_extralibs="-lossaudio"
4756         ;;
4757     dragonfly)
4758         disable symver
4759         ;;
4760     freebsd)
4761         ;;
4762     bsd/os)
4763         add_extralibs -lpoll -lgnugetopt
4764         strip="strip -d"
4765         ;;
4766     darwin)
4767         enabled ppc && add_asflags -force_cpusubtype_ALL
4768         install_name_dir_default='$(SHLIBDIR)'
4769         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4770         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4771         strip="${strip} -x"
4772         add_ldflags -Wl,-dynamic,-search_paths_first
4773         SLIBSUF=".dylib"
4774         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4775         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4776         objformat="macho"
4777         enabled x86_64 && objformat="macho64"
4778         enabled_any pic shared x86_64 ||
4779             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4780         check_header dispatch/dispatch.h &&
4781             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4782         version_script='-exported_symbols_list'
4783         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4784         ;;
4785     msys*)
4786         die "Native MSYS builds are discouraged, please use the MINGW environment."
4787         ;;
4788     mingw32*|mingw64*)
4789         if test $target_os = "mingw32ce"; then
4790             disable network
4791         else
4792             target_os=mingw32
4793         fi
4794         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4795         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4796         LIBTARGET=i386
4797         if enabled x86_64; then
4798             LIBTARGET="i386:x86-64"
4799         elif enabled arm; then
4800             LIBTARGET=arm-wince
4801         fi
4802         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4803         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4804         shlibdir_default="$bindir_default"
4805         SLIBPREF=""
4806         SLIBSUF=".dll"
4807         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4808         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4809         dlltool="${cross_prefix}dlltool"
4810         if check_cmd lib.exe -list; then
4811             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4812             if enabled x86_64; then
4813                 LIBTARGET=x64
4814             fi
4815         elif check_cmd $dlltool --version; then
4816             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4817         fi
4818         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4819         SLIB_INSTALL_LINKS=
4820         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4821         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4822         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4823         objformat="win32"
4824         ranlib=:
4825         enable dos_paths
4826         check_ldflags -Wl,--nxcompat,--dynamicbase
4827         # Lets work around some stupidity in binutils.
4828         # ld will strip relocations from executables even though we need them
4829         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4830         # however ld then forgets what the entry point should be (oops) so we
4831         # have to manually (re)set it.
4832         if enabled x86_32; then
4833             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4834         elif enabled x86_64; then
4835             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4836             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4837             # Set image base >4GB for extra entropy with HEASLR
4838             add_ldexeflags -Wl,--image-base,0x140000000
4839             append SHFLAGS -Wl,--image-base,0x180000000
4840         fi
4841         ;;
4842     win32|win64)
4843         disable symver
4844         if enabled shared; then
4845             # Link to the import library instead of the normal static library
4846             # for shared libs.
4847             LD_LIB='%.lib'
4848             # Cannot build both shared and static libs with MSVC or icl.
4849             disable static
4850         fi
4851         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE