Revert "lavu/atomic: add support for the new memory model aware gcc built-ins"
[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     machine_rw_barrier
1825     MemoryBarrier
1826     mm_empty
1827     rdtsc
1828     sarestart
1829     sem_timedwait
1830     sync_val_compare_and_swap
1831 "
1832 HAVE_LIST_CMDLINE="
1833     inline_asm
1834     symver
1835     yasm
1836 "
1837
1838 HAVE_LIST_PUB="
1839     bigendian
1840     fast_unaligned
1841 "
1842
1843 HEADERS_LIST="
1844     alsa_asoundlib_h
1845     altivec_h
1846     arpa_inet_h
1847     asm_types_h
1848     cdio_paranoia_h
1849     cdio_paranoia_paranoia_h
1850     cuda_h
1851     dispatch_dispatch_h
1852     dev_bktr_ioctl_bt848_h
1853     dev_bktr_ioctl_meteor_h
1854     dev_ic_bt8xx_h
1855     dev_video_bktr_ioctl_bt848_h
1856     dev_video_meteor_ioctl_meteor_h
1857     direct_h
1858     dirent_h
1859     dlfcn_h
1860     d3d11_h
1861     dxva_h
1862     ES2_gl_h
1863     gsm_h
1864     io_h
1865     mach_mach_time_h
1866     machine_ioctl_bt848_h
1867     machine_ioctl_meteor_h
1868     malloc_h
1869     opencv2_core_core_c_h
1870     openjpeg_2_1_openjpeg_h
1871     openjpeg_2_0_openjpeg_h
1872     openjpeg_1_5_openjpeg_h
1873     OpenGL_gl3_h
1874     poll_h
1875     sndio_h
1876     soundcard_h
1877     stdatomic_h
1878     sys_mman_h
1879     sys_param_h
1880     sys_resource_h
1881     sys_select_h
1882     sys_soundcard_h
1883     sys_time_h
1884     sys_un_h
1885     sys_videoio_h
1886     termios_h
1887     udplite_h
1888     unistd_h
1889     valgrind_valgrind_h
1890     windows_h
1891     winsock2_h
1892 "
1893
1894 INTRINSICS_LIST="
1895     intrinsics_neon
1896 "
1897
1898 COMPLEX_FUNCS="
1899     cabs
1900     cexp
1901 "
1902
1903 MATH_FUNCS="
1904     atanf
1905     atan2f
1906     cbrt
1907     cbrtf
1908     copysign
1909     cosf
1910     erf
1911     exp2
1912     exp2f
1913     expf
1914     hypot
1915     isfinite
1916     isinf
1917     isnan
1918     ldexpf
1919     llrint
1920     llrintf
1921     log2
1922     log2f
1923     log10f
1924     lrint
1925     lrintf
1926     powf
1927     rint
1928     round
1929     roundf
1930     sinf
1931     trunc
1932     truncf
1933 "
1934
1935 SYSTEM_FUNCS="
1936     access
1937     aligned_malloc
1938     arc4random
1939     clock_gettime
1940     closesocket
1941     CommandLineToArgvW
1942     CoTaskMemFree
1943     CryptGenRandom
1944     dlopen
1945     fcntl
1946     flt_lim
1947     fork
1948     getaddrinfo
1949     gethrtime
1950     getopt
1951     GetProcessAffinityMask
1952     GetProcessMemoryInfo
1953     GetProcessTimes
1954     getrusage
1955     GetSystemTimeAsFileTime
1956     gettimeofday
1957     glob
1958     glXGetProcAddress
1959     gmtime_r
1960     inet_aton
1961     isatty
1962     jack_port_get_latency_range
1963     kbhit
1964     LoadLibrary
1965     localtime_r
1966     lstat
1967     lzo1x_999_compress
1968     mach_absolute_time
1969     MapViewOfFile
1970     memalign
1971     mkstemp
1972     mmap
1973     mprotect
1974     nanosleep
1975     PeekNamedPipe
1976     posix_memalign
1977     pthread_cancel
1978     sched_getaffinity
1979     SetConsoleTextAttribute
1980     SetConsoleCtrlHandler
1981     setmode
1982     setrlimit
1983     Sleep
1984     strerror_r
1985     sysconf
1986     sysctl
1987     usleep
1988     UTGetOSTypeFromString
1989     VirtualAlloc
1990     wglGetProcAddress
1991 "
1992
1993 TOOLCHAIN_FEATURES="
1994     as_dn_directive
1995     as_fpu_directive
1996     as_func
1997     as_object_arch
1998     asm_mod_q
1999     attribute_may_alias
2000     attribute_packed
2001     ebp_available
2002     ebx_available
2003     gnu_as
2004     gnu_windres
2005     ibm_asm
2006     inline_asm_direct_symbol_refs
2007     inline_asm_labels
2008     inline_asm_nonlocal_labels
2009     pragma_deprecated
2010     rsync_contimeout
2011     symver_asm_label
2012     symver_gnu_asm
2013     vfp_args
2014     xform_asm
2015     xmm_clobbers
2016 "
2017
2018 TYPES_LIST="
2019     CONDITION_VARIABLE_Ptr
2020     socklen_t
2021     struct_addrinfo
2022     struct_group_source_req
2023     struct_ip_mreq_source
2024     struct_ipv6_mreq
2025     struct_msghdr_msg_flags
2026     struct_pollfd
2027     struct_rusage_ru_maxrss
2028     struct_sctp_event_subscribe
2029     struct_sockaddr_in6
2030     struct_sockaddr_sa_len
2031     struct_sockaddr_storage
2032     struct_stat_st_mtim_tv_nsec
2033     struct_v4l2_frmivalenum_discrete
2034 "
2035
2036 HAVE_LIST="
2037     $ARCH_EXT_LIST
2038     $(add_suffix _external $ARCH_EXT_LIST)
2039     $(add_suffix _inline   $ARCH_EXT_LIST)
2040     $ARCH_FEATURES
2041     $ATOMICS_LIST
2042     $BUILTIN_LIST
2043     $COMPLEX_FUNCS
2044     $HAVE_LIST_CMDLINE
2045     $HAVE_LIST_PUB
2046     $HEADERS_LIST
2047     $INTRINSICS_LIST
2048     $MATH_FUNCS
2049     $SYSTEM_FUNCS
2050     $THREADS_LIST
2051     $TOOLCHAIN_FEATURES
2052     $TYPES_LIST
2053     atomics_native
2054     dos_paths
2055     dxva2_lib
2056     dxva2api_cobj
2057     libc_msvcrt
2058     libdc1394_1
2059     libdc1394_2
2060     makeinfo
2061     makeinfo_html
2062     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2063     perl
2064     pod2man
2065     sdl2
2066     section_data_rel_ro
2067     texi2html
2068     threads
2069     vaapi_drm
2070     vaapi_x11
2071     vdpau_x11
2072     winrt
2073     xlib
2074 "
2075
2076 # options emitted with CONFIG_ prefix but not available on the command line
2077 CONFIG_EXTRA="
2078     aandcttables
2079     ac3dsp
2080     audio_frame_queue
2081     audiodsp
2082     blockdsp
2083     bswapdsp
2084     cabac
2085     dirac_parse
2086     dvprofile
2087     exif
2088     faandct
2089     faanidct
2090     fdctdsp
2091     flacdsp
2092     fmtconvert
2093     frame_thread_encoder
2094     g722dsp
2095     golomb
2096     gplv3
2097     h263dsp
2098     h264chroma
2099     h264dsp
2100     h264parse
2101     h264pred
2102     h264qpel
2103     hpeldsp
2104     huffman
2105     huffyuvdsp
2106     huffyuvencdsp
2107     idctdsp
2108     iirfilter
2109     mdct15
2110     intrax8
2111     iso_media
2112     ividsp
2113     jpegtables
2114     lgplv3
2115     libx262
2116     llauddsp
2117     llviddsp
2118     llvidencdsp
2119     lpc
2120     lzf
2121     me_cmp
2122     mpeg_er
2123     mpegaudio
2124     mpegaudiodsp
2125     mpegvideo
2126     mpegvideoenc
2127     mss34dsp
2128     pixblockdsp
2129     qpeldsp
2130     qsv
2131     qsvdec
2132     qsvenc
2133     rangecoder
2134     riffdec
2135     riffenc
2136     rtpdec
2137     rtpenc_chain
2138     rv34dsp
2139     sinewin
2140     snappy
2141     srtp
2142     startcode
2143     texturedsp
2144     texturedspenc
2145     tpeldsp
2146     vaapi_encode
2147     vc1dsp
2148     videodsp
2149     vp3dsp
2150     vp56dsp
2151     vp8dsp
2152     vt_bt2020
2153     wma_freqs
2154     wmv2dsp
2155 "
2156
2157 CMDLINE_SELECT="
2158     $ARCH_EXT_LIST
2159     $CONFIG_LIST
2160     $HAVE_LIST_CMDLINE
2161     $THREADS_LIST
2162     asm
2163     cross_compile
2164     debug
2165     extra_warnings
2166     logging
2167     lto
2168     optimizations
2169     rpath
2170     stripping
2171 "
2172
2173 PATHS_LIST="
2174     bindir
2175     datadir
2176     docdir
2177     incdir
2178     libdir
2179     mandir
2180     pkgconfigdir
2181     prefix
2182     shlibdir
2183     install_name_dir
2184 "
2185
2186 CMDLINE_SET="
2187     $PATHS_LIST
2188     ar
2189     arch
2190     as
2191     assert_level
2192     build_suffix
2193     cc
2194     objcc
2195     cpu
2196     cross_prefix
2197     custom_allocator
2198     cxx
2199     dep_cc
2200     doxygen
2201     env
2202     extra_version
2203     gas
2204     host_cc
2205     host_cflags
2206     host_ld
2207     host_ldflags
2208     host_libs
2209     host_os
2210     install
2211     ld
2212     ln_s
2213     logfile
2214     malloc_prefix
2215     nm
2216     optflags
2217     pkg_config
2218     pkg_config_flags
2219     progs_suffix
2220     random_seed
2221     ranlib
2222     samples
2223     strip
2224     sws_max_filter_size
2225     sysinclude
2226     sysroot
2227     target_exec
2228     target_os
2229     target_path
2230     target_samples
2231     tempprefix
2232     toolchain
2233     valgrind
2234     yasmexe
2235 "
2236
2237 CMDLINE_APPEND="
2238     extra_cflags
2239     extra_cxxflags
2240     extra_objcflags
2241     host_cppflags
2242 "
2243
2244 # code dependency declarations
2245
2246 # architecture extensions
2247
2248 armv5te_deps="arm"
2249 armv6_deps="arm"
2250 armv6t2_deps="arm"
2251 armv8_deps="aarch64"
2252 neon_deps_any="aarch64 arm"
2253 intrinsics_neon_deps="neon"
2254 vfp_deps_any="aarch64 arm"
2255 vfpv3_deps="vfp"
2256 setend_deps="arm"
2257
2258 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2259
2260 loongson2_deps="mips"
2261 loongson3_deps="mips"
2262 mipsfpu_deps="mips"
2263 mipsdsp_deps="mips"
2264 mipsdspr2_deps="mips"
2265 mips32r2_deps="mips"
2266 mips32r5_deps="mips"
2267 mips32r6_deps="mips"
2268 mips64r2_deps="mips"
2269 mips64r6_deps="mips"
2270 msa_deps="mipsfpu"
2271 mmi_deps="mips"
2272
2273 altivec_deps="ppc"
2274 dcbzl_deps="ppc"
2275 ldbrx_deps="ppc"
2276 ppc4xx_deps="ppc"
2277 vsx_deps="altivec"
2278 power8_deps="vsx"
2279
2280 cpunop_deps="i686"
2281 x86_64_select="i686"
2282 x86_64_suggest="fast_cmov"
2283
2284 amd3dnow_deps="mmx"
2285 amd3dnowext_deps="amd3dnow"
2286 i686_deps="x86"
2287 mmx_deps="x86"
2288 mmxext_deps="mmx"
2289 sse_deps="mmxext"
2290 sse2_deps="sse"
2291 sse3_deps="sse2"
2292 ssse3_deps="sse3"
2293 sse4_deps="ssse3"
2294 sse42_deps="sse4"
2295 aesni_deps="sse42"
2296 avx_deps="sse42"
2297 xop_deps="avx"
2298 fma3_deps="avx"
2299 fma4_deps="avx"
2300 avx2_deps="avx"
2301
2302 mmx_external_deps="yasm"
2303 mmx_inline_deps="inline_asm"
2304 mmx_suggest="mmx_external mmx_inline"
2305
2306 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2307     eval dep=\$${ext}_deps
2308     eval ${ext}_external_deps='"${dep}_external"'
2309     eval ${ext}_inline_deps='"${dep}_inline"'
2310     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2311 done
2312
2313 aligned_stack_if_any="aarch64 ppc x86"
2314 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2315 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2316 fast_unaligned_if_any="aarch64 ppc x86"
2317 simd_align_16_if_any="altivec neon sse"
2318
2319 # system capabilities
2320 symver_if_any="symver_asm_label symver_gnu_asm"
2321 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2322
2323 # threading support
2324 atomics_gcc_if="sync_val_compare_and_swap"
2325 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2326 atomics_win32_if="MemoryBarrier"
2327 atomics_native_if_any="$ATOMICS_LIST"
2328 w32threads_deps="atomics_native"
2329 threads_if_any="$THREADS_LIST"
2330
2331 # subsystems
2332 dct_select="rdft"
2333 dirac_parse_select="golomb"
2334 error_resilience_select="me_cmp"
2335 faandct_deps="faan fdctdsp"
2336 faanidct_deps="faan idctdsp"
2337 h264dsp_select="startcode"
2338 frame_thread_encoder_deps="encoders threads"
2339 intrax8_select="blockdsp idctdsp"
2340 mdct_select="fft"
2341 mdct15_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="mdct15 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="mdct15"
2495 opus_encoder_select="audio_frame_queue mdct15"
2496 png_decoder_select="zlib"
2497 png_encoder_select="llvidencdsp zlib"
2498 prores_decoder_select="blockdsp idctdsp"
2499 prores_encoder_select="fdctdsp"
2500 qcelp_decoder_select="lsp"
2501 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2502 ra_144_decoder_select="audiodsp"
2503 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2504 ralf_decoder_select="golomb"
2505 rawvideo_decoder_select="bswapdsp"
2506 rscc_decoder_select="zlib"
2507 rtjpeg_decoder_select="me_cmp"
2508 rv10_decoder_select="h263_decoder"
2509 rv10_encoder_select="h263_encoder"
2510 rv20_decoder_select="h263_decoder"
2511 rv20_encoder_select="h263_encoder"
2512 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2513 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2514 screenpresso_decoder_select="zlib"
2515 shorten_decoder_select="golomb bswapdsp"
2516 sipr_decoder_select="lsp"
2517 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2518 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2519 sonic_decoder_select="golomb rangecoder"
2520 sonic_encoder_select="golomb rangecoder"
2521 sonic_ls_encoder_select="golomb rangecoder"
2522 sp5x_decoder_select="mjpeg_decoder"
2523 svq1_decoder_select="hpeldsp"
2524 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2525 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2526 svq3_decoder_suggest="zlib"
2527 tak_decoder_select="audiodsp"
2528 tdsc_decoder_select="zlib mjpeg_decoder"
2529 theora_decoder_select="vp3_decoder"
2530 thp_decoder_select="mjpeg_decoder"
2531 tiff_decoder_suggest="zlib lzma"
2532 tiff_encoder_suggest="zlib"
2533 truehd_decoder_select="mlp_parser"
2534 truemotion2_decoder_select="bswapdsp"
2535 truespeech_decoder_select="bswapdsp"
2536 tscc_decoder_select="zlib"
2537 twinvq_decoder_select="mdct lsp sinewin"
2538 txd_decoder_select="texturedsp"
2539 utvideo_decoder_select="bswapdsp llviddsp"
2540 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2541 vble_decoder_select="llviddsp"
2542 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2543 vc1_qsv_decoder_deps="libmfx"
2544 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2545 vc1image_decoder_select="vc1_decoder"
2546 vorbis_decoder_select="mdct"
2547 vorbis_encoder_select="mdct"
2548 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2549 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2550 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2551 vp6a_decoder_select="vp6_decoder"
2552 vp6f_decoder_select="vp6_decoder"
2553 vp7_decoder_select="h264pred videodsp vp8dsp"
2554 vp8_decoder_select="h264pred videodsp vp8dsp"
2555 vp9_decoder_select="videodsp vp9_parser"
2556 webp_decoder_select="vp8_decoder exif"
2557 wmalossless_decoder_select="llauddsp"
2558 wmapro_decoder_select="mdct sinewin wma_freqs"
2559 wmav1_decoder_select="mdct sinewin wma_freqs"
2560 wmav1_encoder_select="mdct sinewin wma_freqs"
2561 wmav2_decoder_select="mdct sinewin wma_freqs"
2562 wmav2_encoder_select="mdct sinewin wma_freqs"
2563 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2564 wmv1_decoder_select="h263_decoder"
2565 wmv1_encoder_select="h263_encoder"
2566 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2567 wmv2_encoder_select="h263_encoder wmv2dsp"
2568 wmv3_decoder_select="vc1_decoder"
2569 wmv3image_decoder_select="wmv3_decoder"
2570 xma1_decoder_select="wmapro_decoder"
2571 xma2_decoder_select="wmapro_decoder"
2572 zerocodec_decoder_select="zlib"
2573 zlib_decoder_select="zlib"
2574 zlib_encoder_select="zlib"
2575 zmbv_decoder_select="zlib"
2576 zmbv_encoder_select="zlib"
2577
2578 # platform codecs
2579 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2580 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2581
2582 # hardware accelerators
2583 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2584 cuda_deps_any="dlopen LoadLibrary"
2585 cuvid_deps="cuda"
2586 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2587 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2588 dxva2_extralibs="-luser32"
2589 vaapi_deps="va_va_h"
2590 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2591 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2592 vda_deps="vda_framework pthreads"
2593 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2594 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2595 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2596 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2597 xvmc_deps="X11_extensions_XvMClib_h"
2598
2599 h263_vaapi_hwaccel_deps="vaapi"
2600 h263_vaapi_hwaccel_select="h263_decoder"
2601 h263_videotoolbox_hwaccel_deps="videotoolbox"
2602 h263_videotoolbox_hwaccel_select="h263_decoder"
2603 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2604 h264_cuvid_hwaccel_deps="cuda cuvid"
2605 h264_d3d11va_hwaccel_deps="d3d11va"
2606 h264_d3d11va_hwaccel_select="h264_decoder"
2607 h264_dxva2_hwaccel_deps="dxva2"
2608 h264_dxva2_hwaccel_select="h264_decoder"
2609 h264_mediacodec_decoder_deps="mediacodec"
2610 h264_mediacodec_hwaccel_deps="mediacodec"
2611 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2612 h264_mmal_decoder_deps="mmal"
2613 h264_mmal_decoder_select="mmal"
2614 h264_mmal_hwaccel_deps="mmal"
2615 h264_omx_encoder_deps="omx"
2616 h264_qsv_hwaccel_deps="libmfx"
2617 h264_vaapi_hwaccel_deps="vaapi"
2618 h264_vaapi_hwaccel_select="h264_decoder"
2619 h264_vda_decoder_deps="vda"
2620 h264_vda_decoder_select="h264_decoder"
2621 h264_vda_hwaccel_deps="vda"
2622 h264_vda_hwaccel_select="h264_decoder"
2623 h264_vda_old_hwaccel_deps="vda"
2624 h264_vda_old_hwaccel_select="h264_decoder"
2625 h264_vdpau_decoder_deps="vdpau"
2626 h264_vdpau_decoder_select="h264_decoder"
2627 h264_vdpau_hwaccel_deps="vdpau"
2628 h264_vdpau_hwaccel_select="h264_decoder"
2629 h264_videotoolbox_hwaccel_deps="videotoolbox"
2630 h264_videotoolbox_hwaccel_select="h264_decoder"
2631 hevc_cuvid_hwaccel_deps="cuda cuvid"
2632 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2633 hevc_d3d11va_hwaccel_select="hevc_decoder"
2634 hevc_mediacodec_decoder_deps="mediacodec"
2635 hevc_mediacodec_hwaccel_deps="mediacodec"
2636 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2637 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2638 hevc_dxva2_hwaccel_select="hevc_decoder"
2639 hevc_qsv_hwaccel_deps="libmfx"
2640 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2641 hevc_vaapi_hwaccel_select="hevc_decoder"
2642 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2643 hevc_vdpau_hwaccel_select="hevc_decoder"
2644 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2645 mpeg_vdpau_decoder_deps="vdpau"
2646 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2647 mpeg_xvmc_hwaccel_deps="xvmc"
2648 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2649 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2650 mpeg1_vdpau_decoder_deps="vdpau"
2651 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2652 mpeg1_vdpau_hwaccel_deps="vdpau"
2653 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2654 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2655 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2656 mpeg1_xvmc_hwaccel_deps="xvmc"
2657 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2658 mpeg2_crystalhd_decoder_select="crystalhd"
2659 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2660 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2661 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2662 mpeg2_dxva2_hwaccel_deps="dxva2"
2663 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2664 mpeg2_mmal_decoder_deps="mmal"
2665 mpeg2_mmal_decoder_select="mmal"
2666 mpeg2_mmal_hwaccel_deps="mmal"
2667 mpeg2_qsv_hwaccel_deps="libmfx"
2668 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2669 mpeg2_vaapi_hwaccel_deps="vaapi"
2670 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2671 mpeg2_vdpau_hwaccel_deps="vdpau"
2672 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2673 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2674 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2675 mpeg2_xvmc_hwaccel_deps="xvmc"
2676 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2677 mpeg4_crystalhd_decoder_select="crystalhd"
2678 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2679 mpeg4_mediacodec_decoder_deps="mediacodec"
2680 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2681 mpeg4_mmal_decoder_deps="mmal"
2682 mpeg4_mmal_decoder_select="mmal"
2683 mpeg4_mmal_hwaccel_deps="mmal"
2684 mpeg4_omx_encoder_deps="omx"
2685 mpeg4_vaapi_hwaccel_deps="vaapi"
2686 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2687 mpeg4_vdpau_decoder_deps="vdpau"
2688 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2689 mpeg4_vdpau_hwaccel_deps="vdpau"
2690 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2691 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2692 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2693 msmpeg4_crystalhd_decoder_select="crystalhd"
2694 vc1_crystalhd_decoder_select="crystalhd"
2695 vc1_cuvid_hwaccel_deps="cuda cuvid"
2696 vc1_d3d11va_hwaccel_deps="d3d11va"
2697 vc1_d3d11va_hwaccel_select="vc1_decoder"
2698 vc1_dxva2_hwaccel_deps="dxva2"
2699 vc1_dxva2_hwaccel_select="vc1_decoder"
2700 vc1_mmal_decoder_deps="mmal"
2701 vc1_mmal_decoder_select="mmal"
2702 vc1_mmal_hwaccel_deps="mmal"
2703 vc1_qsv_hwaccel_deps="libmfx"
2704 vc1_qsv_hwaccel_select="qsvdec_vc1"
2705 vc1_vaapi_hwaccel_deps="vaapi"
2706 vc1_vaapi_hwaccel_select="vc1_decoder"
2707 vc1_vdpau_decoder_deps="vdpau"
2708 vc1_vdpau_decoder_select="vc1_decoder"
2709 vc1_vdpau_hwaccel_deps="vdpau"
2710 vc1_vdpau_hwaccel_select="vc1_decoder"
2711 vp8_cuvid_hwaccel_deps="cuda cuvid"
2712 vp9_cuvid_hwaccel_deps="cuda cuvid"
2713 vp8_mediacodec_decoder_deps="mediacodec"
2714 vp8_mediacodec_hwaccel_deps="mediacodec"
2715 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2716 vp9_d3d11va_hwaccel_select="vp9_decoder"
2717 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2718 vp9_dxva2_hwaccel_select="vp9_decoder"
2719 vp9_mediacodec_decoder_deps="mediacodec"
2720 vp9_mediacodec_hwaccel_deps="mediacodec"
2721 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2722 vp9_vaapi_hwaccel_select="vp9_decoder"
2723 wmv3_crystalhd_decoder_select="crystalhd"
2724 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2725 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2726 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2727 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2728 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2729
2730 # hardware-accelerated codecs
2731 omx_deps="dlopen pthreads"
2732 omx_extralibs='$ldl'
2733 qsvdec_select="qsv"
2734 qsvenc_select="qsv"
2735 vaapi_encode_deps="vaapi"
2736
2737 hwupload_cuda_filter_deps="cuda"
2738 scale_npp_filter_deps="cuda libnpp"
2739
2740 nvenc_deps="cuda"
2741 nvenc_deps_any="dlopen LoadLibrary"
2742 nvenc_encoder_deps="nvenc"
2743 h264_cuvid_decoder_deps="cuda cuvid"
2744 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2745 h264_nvenc_encoder_deps="nvenc"
2746 h264_qsv_decoder_deps="libmfx"
2747 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2748 h264_qsv_encoder_deps="libmfx"
2749 h264_qsv_encoder_select="qsvenc"
2750 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2751 h264_vaapi_encoder_select="vaapi_encode golomb"
2752
2753 hevc_cuvid_decoder_deps="cuda cuvid"
2754 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2755 hevc_nvenc_encoder_deps="nvenc"
2756 hevc_qsv_decoder_deps="libmfx"
2757 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2758 hevc_qsv_encoder_deps="libmfx"
2759 hevc_qsv_encoder_select="qsvenc"
2760 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2761 hevc_vaapi_encoder_select="vaapi_encode golomb"
2762 mjpeg_cuvid_decoder_deps="cuda cuvid"
2763 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2764 mpeg1_cuvid_decoder_deps="cuda cuvid"
2765 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2766 mpeg2_cuvid_decoder_deps="cuda cuvid"
2767 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2768 mpeg2_qsv_decoder_deps="libmfx"
2769 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2770 mpeg2_qsv_encoder_deps="libmfx"
2771 mpeg2_qsv_encoder_select="qsvenc"
2772 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2773 mpeg2_vaapi_encoder_select="vaapi_encode"
2774 mpeg4_cuvid_decoder_deps="cuda cuvid"
2775 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2776 nvenc_h264_encoder_deps="nvenc"
2777 nvenc_hevc_encoder_deps="nvenc"
2778
2779 vc1_cuvid_decoder_deps="cuda cuvid"
2780 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2781 vp8_cuvid_decoder_deps="cuda cuvid"
2782 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2783 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2784 vp8_vaapi_encoder_select="vaapi_encode"
2785 vp9_cuvid_decoder_deps="cuda cuvid"
2786 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2787
2788 # parsers
2789 h264_parser_select="golomb h264dsp h264parse"
2790 hevc_parser_select="golomb"
2791 mpegvideo_parser_select="mpegvideo"
2792 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2793 vc1_parser_select="vc1dsp"
2794
2795 # bitstream_filters
2796 mjpeg2jpeg_bsf_select="jpegtables"
2797
2798 # external libraries
2799 aac_at_decoder_deps="audiotoolbox"
2800 ac3_at_decoder_deps="audiotoolbox"
2801 ac3_at_decoder_select="ac3_parser"
2802 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2803 alac_at_decoder_deps="audiotoolbox"
2804 amr_nb_at_decoder_deps="audiotoolbox"
2805 avisynth_deps_any="dlopen LoadLibrary"
2806 avisynth_demuxer_deps="avisynth"
2807 avisynth_demuxer_select="riffdec"
2808 eac3_at_decoder_deps="audiotoolbox"
2809 eac3_at_decoder_select="ac3_parser"
2810 gsm_ms_at_decoder_deps="audiotoolbox"
2811 ilbc_at_decoder_deps="audiotoolbox"
2812 mp1_at_decoder_deps="audiotoolbox"
2813 mp2_at_decoder_deps="audiotoolbox"
2814 mp3_at_decoder_deps="audiotoolbox"
2815 pcm_alaw_at_decoder_deps="audiotoolbox"
2816 pcm_mulaw_at_decoder_deps="audiotoolbox"
2817 qdmc_at_decoder_deps="audiotoolbox"
2818 qdm2_at_decoder_deps="audiotoolbox"
2819 aac_at_encoder_deps="audiotoolbox"
2820 aac_at_encoder_select="audio_frame_queue"
2821 alac_at_encoder_deps="audiotoolbox"
2822 alac_at_encoder_select="audio_frame_queue"
2823 ilbc_at_encoder_deps="audiotoolbox"
2824 ilbc_at_encoder_select="audio_frame_queue"
2825 pcm_alaw_at_encoder_deps="audiotoolbox"
2826 pcm_alaw_at_encoder_select="audio_frame_queue"
2827 pcm_mulaw_at_encoder_deps="audiotoolbox"
2828 pcm_mulaw_at_encoder_select="audio_frame_queue"
2829 chromaprint_muxer_deps="chromaprint"
2830 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2831 libcelt_decoder_deps="libcelt"
2832 libfdk_aac_decoder_deps="libfdk_aac"
2833 libfdk_aac_encoder_deps="libfdk_aac"
2834 libfdk_aac_encoder_select="audio_frame_queue"
2835 libgme_demuxer_deps="libgme"
2836 libgsm_decoder_deps="libgsm"
2837 libgsm_encoder_deps="libgsm"
2838 libgsm_ms_decoder_deps="libgsm"
2839 libgsm_ms_encoder_deps="libgsm"
2840 libilbc_decoder_deps="libilbc"
2841 libilbc_encoder_deps="libilbc"
2842 libkvazaar_encoder_deps="libkvazaar"
2843 libmodplug_demuxer_deps="libmodplug"
2844 libmp3lame_encoder_deps="libmp3lame"
2845 libmp3lame_encoder_select="audio_frame_queue"
2846 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2847 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2848 libopencore_amrnb_encoder_select="audio_frame_queue"
2849 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2850 libopenh264_decoder_deps="libopenh264"
2851 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2852 libopenh264_encoder_deps="libopenh264"
2853 libopenjpeg_decoder_deps="libopenjpeg"
2854 libopenjpeg_encoder_deps="libopenjpeg"
2855 libopenmpt_demuxer_deps="libopenmpt"
2856 libopus_decoder_deps="libopus"
2857 libopus_encoder_deps="libopus"
2858 libopus_encoder_select="audio_frame_queue"
2859 libschroedinger_decoder_deps="libschroedinger"
2860 libschroedinger_encoder_deps="libschroedinger"
2861 libshine_encoder_deps="libshine"
2862 libshine_encoder_select="audio_frame_queue"
2863 libspeex_decoder_deps="libspeex"
2864 libspeex_encoder_deps="libspeex"
2865 libspeex_encoder_select="audio_frame_queue"
2866 libtheora_encoder_deps="libtheora"
2867 libtwolame_encoder_deps="libtwolame"
2868 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2869 libvorbis_decoder_deps="libvorbis"
2870 libvorbis_encoder_deps="libvorbis"
2871 libvorbis_encoder_select="audio_frame_queue"
2872 libvpx_vp8_decoder_deps="libvpx"
2873 libvpx_vp8_encoder_deps="libvpx"
2874 libvpx_vp9_decoder_deps="libvpx"
2875 libvpx_vp9_encoder_deps="libvpx"
2876 libwavpack_encoder_deps="libwavpack"
2877 libwebp_encoder_deps="libwebp"
2878 libwebp_anim_encoder_deps="libwebp"
2879 libx262_encoder_deps="libx262"
2880 libx264_encoder_deps="libx264"
2881 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2882 libx264rgb_encoder_select="libx264_encoder"
2883 libx265_encoder_deps="libx265"
2884 libxavs_encoder_deps="libxavs"
2885 libxvid_encoder_deps="libxvid"
2886 libzvbi_teletext_decoder_deps="libzvbi"
2887 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2888 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2889 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2890 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2891 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2892
2893 # demuxers / muxers
2894 ac3_demuxer_select="ac3_parser"
2895 aiff_muxer_select="iso_media"
2896 asf_demuxer_select="riffdec"
2897 asf_o_demuxer_select="riffdec"
2898 asf_muxer_select="riffenc"
2899 asf_stream_muxer_select="asf_muxer"
2900 avi_demuxer_select="iso_media riffdec exif"
2901 avi_muxer_select="riffenc"
2902 caf_demuxer_select="iso_media riffdec"
2903 caf_muxer_select="iso_media"
2904 dash_muxer_select="mp4_muxer"
2905 dirac_demuxer_select="dirac_parser"
2906 dts_demuxer_select="dca_parser"
2907 dtshd_demuxer_select="dca_parser"
2908 dv_demuxer_select="dvprofile"
2909 dv_muxer_select="dvprofile"
2910 dxa_demuxer_select="riffdec"
2911 eac3_demuxer_select="ac3_parser"
2912 f4v_muxer_select="mov_muxer"
2913 fifo_muxer_deps="threads"
2914 flac_demuxer_select="flac_parser"
2915 hds_muxer_select="flv_muxer"
2916 hls_muxer_select="mpegts_muxer"
2917 image2_alias_pix_demuxer_select="image2_demuxer"
2918 image2_brender_pix_demuxer_select="image2_demuxer"
2919 ipod_muxer_select="mov_muxer"
2920 ismv_muxer_select="mov_muxer"
2921 libnut_demuxer_deps="libnut"
2922 libnut_muxer_deps="libnut"
2923 matroska_audio_muxer_select="matroska_muxer"
2924 matroska_demuxer_select="iso_media riffdec"
2925 matroska_demuxer_suggest="bzlib lzo zlib"
2926 matroska_muxer_select="iso_media riffenc"
2927 mmf_muxer_select="riffenc"
2928 mov_demuxer_select="iso_media riffdec"
2929 mov_demuxer_suggest="zlib"
2930 mov_muxer_select="iso_media riffenc rtpenc_chain"
2931 mp3_demuxer_select="mpegaudio_parser"
2932 mp4_muxer_select="mov_muxer"
2933 mpegts_demuxer_select="iso_media"
2934 mpegts_muxer_select="adts_muxer latm_muxer"
2935 mpegtsraw_demuxer_select="mpegts_demuxer"
2936 mxf_d10_muxer_select="mxf_muxer"
2937 mxf_opatom_muxer_select="mxf_muxer"
2938 nut_muxer_select="riffenc"
2939 nuv_demuxer_select="riffdec"
2940 oga_muxer_select="ogg_muxer"
2941 ogg_demuxer_select="dirac_parse"
2942 ogv_muxer_select="ogg_muxer"
2943 opus_muxer_select="ogg_muxer"
2944 psp_muxer_select="mov_muxer"
2945 rtp_demuxer_select="sdp_demuxer"
2946 rtp_muxer_select="golomb"
2947 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2948 rtsp_demuxer_select="http_protocol rtpdec"
2949 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2950 sap_demuxer_select="sdp_demuxer"
2951 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2952 sdp_demuxer_select="rtpdec"
2953 smoothstreaming_muxer_select="ismv_muxer"
2954 spdif_muxer_select="aac_parser"
2955 spx_muxer_select="ogg_muxer"
2956 swf_demuxer_suggest="zlib"
2957 tak_demuxer_select="tak_parser"
2958 tg2_muxer_select="mov_muxer"
2959 tgp_muxer_select="mov_muxer"
2960 vobsub_demuxer_select="mpegps_demuxer"
2961 w64_demuxer_select="wav_demuxer"
2962 w64_muxer_select="wav_muxer"
2963 wav_demuxer_select="riffdec"
2964 wav_muxer_select="riffenc"
2965 webm_muxer_select="iso_media riffenc"
2966 webm_dash_manifest_demuxer_select="matroska_demuxer"
2967 wtv_demuxer_select="mpegts_demuxer riffdec"
2968 wtv_muxer_select="mpegts_muxer riffenc"
2969 xmv_demuxer_select="riffdec"
2970 xwma_demuxer_select="riffdec"
2971
2972 # indevs / outdevs
2973 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2974 alsa_outdev_deps="alsa_asoundlib_h"
2975 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2976 avfoundation_indev_select="avfoundation"
2977 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2978 caca_outdev_deps="libcaca"
2979 decklink_indev_deps="decklink pthreads"
2980 decklink_indev_extralibs="-lstdc++"
2981 decklink_outdev_deps="decklink pthreads"
2982 decklink_outdev_extralibs="-lstdc++"
2983 dshow_indev_deps="IBaseFilter"
2984 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2985 dv1394_indev_deps="dv1394"
2986 dv1394_indev_select="dv_demuxer"
2987 fbdev_indev_deps="linux_fb_h"
2988 fbdev_outdev_deps="linux_fb_h"
2989 gdigrab_indev_deps="CreateDIBSection"
2990 gdigrab_indev_extralibs="-lgdi32"
2991 gdigrab_indev_select="bmp_decoder"
2992 iec61883_indev_deps="libiec61883"
2993 jack_indev_deps="jack_jack_h"
2994 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2995 lavfi_indev_deps="avfilter"
2996 libcdio_indev_deps="libcdio"
2997 libdc1394_indev_deps="libdc1394"
2998 libv4l2_indev_deps="libv4l2"
2999 openal_indev_deps="openal"
3000 opengl_outdev_deps="opengl"
3001 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3002 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3003 pulse_indev_deps="libpulse"
3004 pulse_outdev_deps="libpulse"
3005 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3006 qtkit_indev_select="qtkit"
3007 sdl2_outdev_deps="sdl2"
3008 sndio_indev_deps="sndio_h"
3009 sndio_outdev_deps="sndio_h"
3010 v4l_indev_deps="linux_videodev_h"
3011 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3012 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3013 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3014 vfwcap_indev_extralibs="-lavicap32"
3015 x11grab_indev_deps="x11grab"
3016 x11grab_xcb_indev_deps="libxcb"
3017 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3018 xv_outdev_extralibs="-lXv -lX11 -lXext"
3019
3020 # protocols
3021 async_protocol_deps="threads"
3022 bluray_protocol_deps="libbluray"
3023 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3024 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3025 ffrtmpcrypt_protocol_select="tcp_protocol"
3026 ffrtmphttp_protocol_deps="!librtmp_protocol"
3027 ffrtmphttp_protocol_select="http_protocol"
3028 ftp_protocol_select="tcp_protocol"
3029 gopher_protocol_select="network"
3030 http_protocol_select="tcp_protocol"
3031 httpproxy_protocol_select="tcp_protocol"
3032 https_protocol_select="tls_protocol"
3033 icecast_protocol_select="http_protocol"
3034 librtmp_protocol_deps="librtmp"
3035 librtmpe_protocol_deps="librtmp"
3036 librtmps_protocol_deps="librtmp"
3037 librtmpt_protocol_deps="librtmp"
3038 librtmpte_protocol_deps="librtmp"
3039 libsmbclient_protocol_deps="libsmbclient gplv3"
3040 libssh_protocol_deps="libssh"
3041 mmsh_protocol_select="http_protocol"
3042 mmst_protocol_select="network"
3043 rtmp_protocol_deps="!librtmp_protocol"
3044 rtmp_protocol_select="tcp_protocol"
3045 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3046 rtmps_protocol_deps="!librtmp_protocol"
3047 rtmps_protocol_select="tls_protocol"
3048 rtmpt_protocol_select="ffrtmphttp_protocol"
3049 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3050 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3051 rtp_protocol_select="udp_protocol"
3052 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3053 sctp_protocol_select="network"
3054 srtp_protocol_select="rtp_protocol srtp"
3055 tcp_protocol_select="network"
3056 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3057 tls_gnutls_protocol_select="tcp_protocol"
3058 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3059 tls_openssl_protocol_select="tcp_protocol"
3060 tls_schannel_protocol_deps="schannel"
3061 tls_schannel_protocol_select="tcp_protocol"
3062 tls_securetransport_protocol_deps="securetransport"
3063 tls_securetransport_protocol_select="tcp_protocol"
3064 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3065 udp_protocol_select="network"
3066 udplite_protocol_select="network"
3067 unix_protocol_deps="sys_un_h"
3068 unix_protocol_select="network"
3069
3070 # filters
3071 afftfilt_filter_deps="avcodec"
3072 afftfilt_filter_select="fft"
3073 amovie_filter_deps="avcodec avformat"
3074 aresample_filter_deps="swresample"
3075 ass_filter_deps="libass"
3076 asyncts_filter_deps="avresample"
3077 atempo_filter_deps="avcodec"
3078 atempo_filter_select="rdft"
3079 azmq_filter_deps="libzmq"
3080 blackframe_filter_deps="gpl"
3081 boxblur_filter_deps="gpl"
3082 bs2b_filter_deps="libbs2b"
3083 colormatrix_filter_deps="gpl"
3084 cover_rect_filter_deps="avcodec avformat gpl"
3085 cropdetect_filter_deps="gpl"
3086 deinterlace_vaapi_filter_deps="vaapi"
3087 delogo_filter_deps="gpl"
3088 deshake_filter_select="pixelutils"
3089 drawtext_filter_deps="libfreetype"
3090 eq_filter_deps="gpl"
3091 fftfilt_filter_deps="avcodec"
3092 fftfilt_filter_select="rdft"
3093 find_rect_filter_deps="avcodec avformat gpl"
3094 firequalizer_filter_deps="avcodec"
3095 firequalizer_filter_select="rdft"
3096 flite_filter_deps="libflite"
3097 framerate_filter_select="pixelutils"
3098 frei0r_filter_deps="frei0r dlopen"
3099 frei0r_src_filter_deps="frei0r dlopen"
3100 fspp_filter_deps="gpl"
3101 geq_filter_deps="gpl"
3102 histeq_filter_deps="gpl"
3103 hqdn3d_filter_deps="gpl"
3104 interlace_filter_deps="gpl"
3105 kerndeint_filter_deps="gpl"
3106 ladspa_filter_deps="ladspa dlopen"
3107 mcdeint_filter_deps="avcodec gpl"
3108 movie_filter_deps="avcodec avformat"
3109 mpdecimate_filter_deps="gpl"
3110 mpdecimate_filter_select="pixelutils"
3111 mptestsrc_filter_deps="gpl"
3112 negate_filter_deps="lut_filter"
3113 nnedi_filter_deps="gpl"
3114 ocr_filter_deps="libtesseract"
3115 ocv_filter_deps="libopencv"
3116 owdenoise_filter_deps="gpl"
3117 pan_filter_deps="swresample"
3118 perspective_filter_deps="gpl"
3119 phase_filter_deps="gpl"
3120 pp7_filter_deps="gpl"
3121 pp_filter_deps="gpl postproc"
3122 pullup_filter_deps="gpl"
3123 removelogo_filter_deps="avcodec avformat swscale"
3124 repeatfields_filter_deps="gpl"
3125 resample_filter_deps="avresample"
3126 rubberband_filter_deps="librubberband"
3127 sab_filter_deps="gpl swscale"
3128 scale2ref_filter_deps="swscale"
3129 scale_filter_deps="swscale"
3130 select_filter_select="pixelutils"
3131 showcqt_filter_deps="avcodec avformat swscale"
3132 showcqt_filter_select="fft"
3133 showfreqs_filter_deps="avcodec"
3134 showfreqs_filter_select="fft"
3135 showspectrum_filter_deps="avcodec"
3136 showspectrum_filter_select="fft"
3137 showspectrumpic_filter_deps="avcodec"
3138 showspectrumpic_filter_select="fft"
3139 smartblur_filter_deps="gpl swscale"
3140 sofalizer_filter_deps="netcdf avcodec"
3141 sofalizer_filter_select="fft"
3142 spectrumsynth_filter_deps="avcodec"
3143 spectrumsynth_filter_select="fft"
3144 spp_filter_deps="gpl avcodec"
3145 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3146 stereo3d_filter_deps="gpl"
3147 subtitles_filter_deps="avformat avcodec libass"
3148 super2xsai_filter_deps="gpl"
3149 pixfmts_super2xsai_test_deps="super2xsai_filter"
3150 tinterlace_filter_deps="gpl"
3151 tinterlace_merge_test_deps="tinterlace_filter"
3152 tinterlace_pad_test_deps="tinterlace_filter"
3153 uspp_filter_deps="gpl avcodec"
3154 vaguedenoiser_filter_deps="gpl"
3155 vidstabdetect_filter_deps="libvidstab"
3156 vidstabtransform_filter_deps="libvidstab"
3157 zmq_filter_deps="libzmq"
3158 zoompan_filter_deps="swscale"
3159 zscale_filter_deps="libzimg"
3160 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3161
3162 # examples
3163 avio_dir_cmd_deps="avformat avutil"
3164 avio_reading_deps="avformat avcodec avutil"
3165 decoding_encoding_example_deps="avcodec avformat avutil"
3166 demuxing_decoding_example_deps="avcodec avformat avutil"
3167 extract_mvs_example_deps="avcodec avformat avutil"
3168 filter_audio_example_deps="avfilter avutil"
3169 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3170 filtering_video_example_deps="avfilter avcodec avformat avutil"
3171 http_multiclient_example_deps="avformat avutil fork"
3172 metadata_example_deps="avformat avutil"
3173 muxing_example_deps="avcodec avformat avutil swscale"
3174 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3175 remuxing_example_deps="avcodec avformat avutil"
3176 resampling_audio_example_deps="avutil swresample"
3177 scaling_video_example_deps="avutil swscale"
3178 transcode_aac_example_deps="avcodec avformat swresample"
3179 transcoding_example_deps="avfilter avcodec avformat avutil"
3180
3181 # libraries, in linking order
3182 avcodec_deps="avutil"
3183 avdevice_deps="avformat avcodec avutil"
3184 avfilter_deps="avutil"
3185 avformat_deps="avcodec avutil"
3186 avresample_deps="avutil"
3187 postproc_deps="avutil gpl"
3188 swresample_deps="avutil"
3189 swscale_deps="avutil"
3190
3191 # programs
3192 ffmpeg_deps="avcodec avfilter avformat swresample"
3193 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3194                null_filter
3195                setpts_filter trim_filter"
3196 ffplay_deps="avcodec avformat swscale swresample sdl2"
3197 ffplay_libs='$sdl2_libs'
3198 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3199 ffprobe_deps="avcodec avformat"
3200 ffserver_deps="avformat fork sarestart"
3201 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3202
3203 # documentation
3204 podpages_deps="perl"
3205 manpages_deps="perl pod2man"
3206 htmlpages_deps="perl"
3207 htmlpages_deps_any="makeinfo_html texi2html"
3208 txtpages_deps="perl makeinfo"
3209 doc_deps_any="manpages htmlpages podpages txtpages"
3210
3211 # default parameters
3212
3213 logfile="config.log"
3214
3215 # installation paths
3216 prefix_default="/usr/local"
3217 bindir_default='${prefix}/bin'
3218 datadir_default='${prefix}/share/ffmpeg'
3219 docdir_default='${prefix}/share/doc/ffmpeg'
3220 incdir_default='${prefix}/include'
3221 libdir_default='${prefix}/lib'
3222 mandir_default='${prefix}/share/man'
3223
3224 # toolchain
3225 ar_default="ar"
3226 cc_default="gcc"
3227 cxx_default="g++"
3228 host_cc_default="gcc"
3229 cp_f="cp -f"
3230 doxygen_default="doxygen"
3231 install="install"
3232 ln_s_default="ln -s -f"
3233 nm_default="nm -g"
3234 objformat="elf"
3235 pkg_config_default=pkg-config
3236 ranlib_default="ranlib"
3237 strip_default="strip"
3238 version_script='--version-script'
3239 yasmexe_default="yasm"
3240 windres_default="windres"
3241
3242 # OS
3243 target_os_default=$(tolower $(uname -s))
3244 host_os=$target_os_default
3245
3246 # machine
3247 if test "$target_os_default" = aix; then
3248     arch_default=$(uname -p)
3249     strip_default="strip -X32_64"
3250 else
3251     arch_default=$(uname -m)
3252 fi
3253 cpu="generic"
3254 intrinsics="none"
3255
3256 # configurable options
3257 enable $PROGRAM_LIST
3258 enable $DOCUMENT_LIST
3259 enable $EXAMPLE_LIST
3260 enable $(filter_out avresample $LIBRARY_LIST)
3261 enable stripping
3262
3263 enable asm
3264 enable debug
3265 enable doc
3266 enable faan faandct faanidct
3267 enable optimizations
3268 enable runtime_cpudetect
3269 enable safe_bitstream_reader
3270 enable static
3271 enable swscale_alpha
3272 enable valgrind_backtrace
3273
3274 sws_max_filter_size_default=256
3275 set_default sws_max_filter_size
3276
3277 # build settings
3278 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3279 LIBPREF="lib"
3280 LIBSUF=".a"
3281 FULLNAME='$(NAME)$(BUILDSUF)'
3282 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3283 SLIBPREF="lib"
3284 SLIBSUF=".so"
3285 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3286 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3287 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3288 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3289 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3290 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3291 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3292
3293 asflags_filter=echo
3294 cflags_filter=echo
3295 ldflags_filter=echo
3296
3297 AS_C='-c'
3298 AS_O='-o $@'
3299 CC_C='-c'
3300 CC_E='-E -o $@'
3301 CC_O='-o $@'
3302 CXX_C='-c'
3303 CXX_O='-o $@'
3304 OBJCC_C='-c'
3305 OBJCC_E='-E -o $@'
3306 OBJCC_O='-o $@'
3307 LD_O='-o $@'
3308 LD_LIB='-l%'
3309 LD_PATH='-L'
3310 HOSTCC_C='-c'
3311 HOSTCC_E='-E -o $@'
3312 HOSTCC_O='-o $@'
3313 HOSTLD_O='-o $@'
3314
3315 host_libs='-lm'
3316 host_cflags_filter=echo
3317 host_ldflags_filter=echo
3318
3319 target_path='$(CURDIR)'
3320
3321 # since the object filename is not given with the -MM flag, the compiler
3322 # is only able to print the basename, and we must add the path ourselves
3323 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3324 DEPFLAGS='-MM'
3325
3326 # find source path
3327 if test -f configure; then
3328     source_path=.
3329 else
3330     source_path=$(cd $(dirname "$0"); pwd)
3331     case "$source_path" in
3332         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3333     esac
3334     test -e "$source_path/config.h" &&
3335         die "Out of tree builds are impossible with config.h in source dir."
3336 fi
3337
3338 for v in "$@"; do
3339     r=${v#*=}
3340     l=${v%"$r"}
3341     r=$(sh_quote "$r")
3342     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3343 done
3344
3345 find_things(){
3346     thing=$1
3347     pattern=$2
3348     file=$source_path/$3
3349     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3350 }
3351
3352 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3353 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3354 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3355 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3356 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3357 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3358 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3359 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3360 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3361
3362 find_things_extern(){
3363     thing=$1
3364     pattern=$2
3365     file=$source_path/$3
3366     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3367 }
3368
3369 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3370 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3371
3372 ALL_COMPONENTS="
3373     $BSF_LIST
3374     $DECODER_LIST
3375     $DEMUXER_LIST
3376     $ENCODER_LIST
3377     $FILTER_LIST
3378     $HWACCEL_LIST
3379     $INDEV_LIST
3380     $MUXER_LIST
3381     $OUTDEV_LIST
3382     $PARSER_LIST
3383     $PROTOCOL_LIST
3384 "
3385
3386 for n in $COMPONENT_LIST; do
3387     v=$(toupper ${n%s})_LIST
3388     eval enable \$$v
3389     eval ${n}_if_any="\$$v"
3390 done
3391
3392 enable $ARCH_EXT_LIST
3393
3394 die_unknown(){
3395     echo "Unknown option \"$1\"."
3396     echo "See $0 --help for available options."
3397     exit 1
3398 }
3399
3400 print_in_columns() {
3401     cols=$(expr $ncols / 24)
3402     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3403 }
3404
3405 show_list() {
3406     suffix=_$1
3407     shift
3408     echo $* | sed s/$suffix//g | print_in_columns
3409     exit 0
3410 }
3411
3412 rand_list(){
3413     IFS=', '
3414     set -- $*
3415     unset IFS
3416     for thing; do
3417         comp=${thing%:*}
3418         prob=${thing#$comp}
3419         prob=${prob#:}
3420         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3421         echo "prob ${prob:-0.5}"
3422         printf '%s\n' $comp
3423     done
3424 }
3425
3426 do_random(){
3427     action=$1
3428     shift
3429     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3430     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3431 }
3432
3433 for opt do
3434     optval="${opt#*=}"
3435     case "$opt" in
3436         --extra-ldflags=*)
3437             add_ldflags $optval
3438         ;;
3439         --extra-ldexeflags=*)
3440             add_ldexeflags $optval
3441         ;;
3442         --extra-ldlibflags=*)
3443             add_ldlibflags $optval
3444         ;;
3445         --extra-libs=*)
3446             add_extralibs $optval
3447         ;;
3448         --disable-devices)
3449             disable $INDEV_LIST $OUTDEV_LIST
3450         ;;
3451         --enable-debug=*)
3452             debuglevel="$optval"
3453         ;;
3454         --disable-programs)
3455             disable $PROGRAM_LIST
3456         ;;
3457         --disable-everything)
3458             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3459         ;;
3460         --disable-all)
3461             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3462             disable $LIBRARY_LIST $PROGRAM_LIST doc
3463             enable avutil
3464         ;;
3465         --enable-random|--disable-random)
3466             action=${opt%%-random}
3467             do_random ${action#--} $COMPONENT_LIST
3468         ;;
3469         --enable-random=*|--disable-random=*)
3470             action=${opt%%-random=*}
3471             do_random ${action#--} $optval
3472         ;;
3473         --enable-*=*|--disable-*=*)
3474             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3475             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3476             eval list=\$$(toupper $thing)_LIST
3477             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3478             list=$(filter "$name" $list)
3479             [ "$list" = "" ] && warn "Option $opt did not match anything"
3480             $action $list
3481         ;;
3482         --enable-?*|--disable-?*)
3483             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3484             if is_in $option $COMPONENT_LIST; then
3485                 test $action = disable && action=unset
3486                 eval $action \$$(toupper ${option%s})_LIST
3487             elif is_in $option $CMDLINE_SELECT; then
3488                 $action $option
3489             else
3490                 die_unknown $opt
3491             fi
3492         ;;
3493         --list-*)
3494             NAME="${opt#--list-}"
3495             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3496             NAME=${NAME%s}
3497             eval show_list $NAME \$$(toupper $NAME)_LIST
3498         ;;
3499         --help|-h) show_help
3500         ;;
3501         --fatal-warnings) enable fatal_warnings
3502         ;;
3503         *)
3504             optname="${opt%%=*}"
3505             optname="${optname#--}"
3506             optname=$(echo "$optname" | sed 's/-/_/g')
3507             if is_in $optname $CMDLINE_SET; then
3508                 eval $optname='$optval'
3509             elif is_in $optname $CMDLINE_APPEND; then
3510                 append $optname "$optval"
3511             else
3512                 die_unknown $opt
3513             fi
3514         ;;
3515     esac
3516 done
3517
3518 for e in $env; do
3519     eval "export $e"
3520 done
3521
3522 # Mark specifically enabled, but normally autodetected libraries as requested.
3523 for lib in $AUTODETECT_LIBS; do
3524     enabled $lib && request $lib
3525 done
3526
3527 # Enable platform codecs by default.
3528 enable_weak audiotoolbox
3529
3530 # Enable hwaccels by default.
3531 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3532 enable_weak xlib
3533
3534 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3535
3536 disabled logging && logfile=/dev/null
3537
3538 # Disable all the library-specific components if the library itself
3539 # is disabled, see AVCODEC_LIST and following _LIST variables.
3540
3541 disable_components(){
3542     disabled ${1} && disable $(
3543         eval components="\$$(toupper ${1})_COMPONENTS"
3544         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3545     )
3546 }
3547
3548 map 'disable_components $v' $LIBRARY_LIST
3549
3550 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3551 set >> $logfile
3552
3553 test -n "$valgrind" && toolchain="valgrind-memcheck"
3554
3555 case "$toolchain" in
3556     *-asan)
3557         cc_default="${toolchain%-asan}"
3558         add_cflags  -fsanitize=address
3559         add_ldflags -fsanitize=address
3560     ;;
3561     *-msan)
3562         cc_default="${toolchain%-msan}"
3563         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3564         add_ldflags -fsanitize=memory
3565     ;;
3566     *-tsan)
3567         cc_default="${toolchain%-tsan}"
3568         add_cflags  -fsanitize=thread -fPIE
3569         add_ldflags -fsanitize=thread -pie
3570         case "$toolchain" in
3571             gcc-tsan)
3572                 add_cflags  -fPIC
3573                 add_ldflags -fPIC
3574                 ;;
3575         esac
3576     ;;
3577     *-usan)
3578         cc_default="${toolchain%-usan}"
3579         add_cflags  -fsanitize=undefined
3580         add_ldflags -fsanitize=undefined
3581     ;;
3582     valgrind-*)
3583         target_exec_default="valgrind"
3584         case "$toolchain" in
3585             valgrind-massif)
3586                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3587                 ;;
3588             valgrind-memcheck)
3589                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3590                 ;;
3591         esac
3592     ;;
3593     msvc)
3594         # Check whether the current MSVC version needs the C99 converter.
3595         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3596         # support enough of C99 to build ffmpeg. Default to the new
3597         # behaviour if the regexp was unable to match anything, since this
3598         # successfully parses the version number of existing supported
3599         # versions that require the converter (MSVC 2010 and 2012).
3600         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3601         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3602             cc_default="cl"
3603         else
3604             cc_default="c99wrap cl"
3605         fi
3606         ld_default="$source_path/compat/windows/mslink"
3607         nm_default="dumpbin -symbols"
3608         ar_default="lib"
3609         case "$arch" in
3610         arm*)
3611             as_default="armasm"
3612             ;;
3613         esac
3614         target_os_default="win32"
3615         # Use a relative path for TMPDIR. This makes sure all the
3616         # ffconf temp files are written with a relative path, avoiding
3617         # issues with msys/win32 path conversion for MSVC parameters
3618         # such as -Fo<file> or -out:<file>.
3619         TMPDIR=.
3620     ;;
3621     icl)
3622         cc_default="icl"
3623         ld_default="xilink"
3624         nm_default="dumpbin -symbols"
3625         ar_default="xilib"
3626         target_os_default="win32"
3627         TMPDIR=.
3628     ;;
3629     gcov)
3630         add_cflags  -fprofile-arcs -ftest-coverage
3631         add_ldflags -fprofile-arcs -ftest-coverage
3632     ;;
3633     llvm-cov)
3634         add_cflags -fprofile-arcs -ftest-coverage
3635         add_ldflags --coverage
3636     ;;
3637     hardened)
3638         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3639         add_cflags   -fno-strict-overflow -fstack-protector-all
3640         add_ldflags  -Wl,-z,relro -Wl,-z,now
3641         add_cflags   -fPIE
3642         add_ldexeflags -fPIE -pie
3643     ;;
3644     ?*)
3645         die "Unknown toolchain $toolchain"
3646     ;;
3647 esac
3648
3649 test -n "$cross_prefix" && enable cross_compile
3650
3651 if enabled cross_compile; then
3652     test -n "$arch" && test -n "$target_os" ||
3653         die "Must specify target arch and OS when cross-compiling"
3654 fi
3655
3656 ar_default="${cross_prefix}${ar_default}"
3657 cc_default="${cross_prefix}${cc_default}"
3658 cxx_default="${cross_prefix}${cxx_default}"
3659 nm_default="${cross_prefix}${nm_default}"
3660 pkg_config_default="${cross_prefix}${pkg_config_default}"
3661 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3662     ranlib_default="${cross_prefix}${ranlib_default} -D"
3663 else
3664     ranlib_default="${cross_prefix}${ranlib_default}"
3665 fi
3666 strip_default="${cross_prefix}${strip_default}"
3667 windres_default="${cross_prefix}${windres_default}"
3668
3669 sysinclude_default="${sysroot}/usr/include"
3670
3671 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3672     target_exec target_os yasmexe
3673 enabled cross_compile || host_cc_default=$cc
3674 set_default host_cc
3675
3676 pkg_config_fail_message=""
3677 if ! $pkg_config --version >/dev/null 2>&1; then
3678     warn "$pkg_config not found, library detection may fail."
3679     pkg_config=false
3680 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3681     pkg_config_fail_message="
3682 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3683 fi
3684
3685 if test $doxygen != $doxygen_default && \
3686   ! $doxygen --version >/dev/null 2>&1; then
3687     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3688 fi
3689
3690 exesuf() {
3691     case $1 in
3692         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3693     esac
3694 }
3695
3696 EXESUF=$(exesuf $target_os)
3697 HOSTEXESUF=$(exesuf $host_os)
3698
3699 # set temporary file name
3700 : ${TMPDIR:=$TEMPDIR}
3701 : ${TMPDIR:=$TMP}
3702 : ${TMPDIR:=/tmp}
3703
3704 if [ -n "$tempprefix" ] ; then
3705     mktemp(){
3706         echo $tempprefix.${HOSTNAME}.${UID}
3707     }
3708 elif ! check_cmd mktemp -u XXXXXX; then
3709     # simple replacement for missing mktemp
3710     # NOT SAFE FOR GENERAL USE
3711     mktemp(){
3712         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3713     }
3714 fi
3715
3716 tmpfile(){
3717     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3718         (set -C; exec > $tmp) 2>/dev/null ||
3719         die "Unable to create temporary file in $TMPDIR."
3720     append TMPFILES $tmp
3721     eval $1=$tmp
3722 }
3723
3724 trap 'rm -f -- $TMPFILES' EXIT
3725
3726 tmpfile TMPASM .asm
3727 tmpfile TMPC   .c
3728 tmpfile TMPCPP .cpp
3729 tmpfile TMPE   $EXESUF
3730 tmpfile TMPH   .h
3731 tmpfile TMPM   .m
3732 tmpfile TMPO   .o
3733 tmpfile TMPS   .S
3734 tmpfile TMPSH  .sh
3735 tmpfile TMPV   .ver
3736
3737 unset -f mktemp
3738
3739 chmod +x $TMPE
3740
3741 # make sure we can execute files in $TMPDIR
3742 cat > $TMPSH 2>> $logfile <<EOF
3743 #! /bin/sh
3744 EOF
3745 chmod +x $TMPSH >> $logfile 2>&1
3746 if ! $TMPSH >> $logfile 2>&1; then
3747     cat <<EOF
3748 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3749 variable to another directory and make sure that it is not mounted noexec.
3750 EOF
3751     die "Sanity test failed."
3752 fi
3753
3754 armasm_flags(){
3755     for flag; do
3756         case $flag in
3757             # Filter out MSVC cl.exe options from cflags that shouldn't
3758             # be passed to gas-preprocessor
3759             -M[TD]*)                                            ;;
3760             *)                  echo $flag                      ;;
3761         esac
3762    done
3763 }
3764
3765 ccc_flags(){
3766     for flag; do
3767         case $flag in
3768             -std=c99)           echo -c99                       ;;
3769             -mcpu=*)            echo -arch ${flag#*=}           ;;
3770             -mieee)             echo -ieee                      ;;
3771             -O*|-fast)          echo $flag                      ;;
3772             -fno-math-errno)    echo -assume nomath_errno       ;;
3773             -g)                 echo -g3                        ;;
3774             -Wall)              echo -msg_enable level2         ;;
3775             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3776             -Wl,*)              echo $flag                      ;;
3777             -f*|-W*)                                            ;;
3778             *)                  echo $flag                      ;;
3779         esac
3780    done
3781 }
3782
3783 cparser_flags(){
3784     for flag; do
3785         case $flag in
3786             -Wno-switch)             echo -Wno-switch-enum ;;
3787             -Wno-format-zero-length) ;;
3788             -Wdisabled-optimization) ;;
3789             -Wno-pointer-sign)       echo -Wno-other ;;
3790             *)                       echo $flag ;;
3791         esac
3792     done
3793 }
3794
3795 msvc_common_flags(){
3796     for flag; do
3797         case $flag in
3798             # In addition to specifying certain flags under the compiler
3799             # specific filters, they must be specified here as well or else the
3800             # generic catch all at the bottom will print the original flag.
3801             -Wall)                ;;
3802             -std=c99)             ;;
3803             # Common flags
3804             -fomit-frame-pointer) ;;
3805             -g)                   echo -Z7 ;;
3806             -fno-math-errno)      ;;
3807             -fno-common)          ;;
3808             -fno-signed-zeros)    ;;
3809             -fPIC)                ;;
3810             -mthumb)              ;;
3811             -march=*)             ;;
3812             -lz)                  echo zlib.lib ;;
3813             -lavifil32)           echo vfw32.lib ;;
3814             -lavicap32)           echo vfw32.lib user32.lib ;;
3815             -lx264)               echo libx264.lib ;;
3816             -l*)                  echo ${flag#-l}.lib ;;
3817             -LARGEADDRESSAWARE)   echo $flag ;;
3818             -L*)                  echo -libpath:${flag#-L} ;;
3819             *)                    echo $flag ;;
3820         esac
3821     done
3822 }
3823
3824 msvc_flags(){
3825     msvc_common_flags "$@"
3826     for flag; do
3827         case $flag in
3828             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3829                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3830                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3831                                        -wd4307 \
3832                                        -wd4273 -wd4554 -wd4701 ;;
3833         esac
3834     done
3835 }
3836
3837 icl_flags(){
3838     msvc_common_flags "$@"
3839     for flag; do
3840         case $flag in
3841             # Despite what Intel's documentation says -Wall, which is supported
3842             # on Windows, does enable remarks so disable them here.
3843             -Wall)                echo $flag -Qdiag-disable:remark ;;
3844             -std=c99)             echo -Qstd=c99 ;;
3845             -flto)                echo -ipo ;;
3846         esac
3847     done
3848 }
3849
3850 icc_flags(){
3851     for flag; do
3852         case $flag in
3853             -flto)                echo -ipo ;;
3854             *)                    echo $flag ;;
3855         esac
3856     done
3857 }
3858
3859 pgi_flags(){
3860     for flag; do
3861         case $flag in
3862             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3863             -fomit-frame-pointer) echo -Mnoframe ;;
3864             -g)                   echo -gopt ;;
3865             *)                    echo $flag ;;
3866         esac
3867     done
3868 }
3869
3870 suncc_flags(){
3871     for flag; do
3872         case $flag in
3873             -march=*|-mcpu=*)
3874                 case "${flag#*=}" in
3875                     native)                   echo -xtarget=native       ;;
3876                     v9|niagara)               echo -xarch=sparc          ;;
3877                     ultrasparc)               echo -xarch=sparcvis       ;;
3878                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3879                     i586|pentium)             echo -xchip=pentium        ;;
3880                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3881                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3882                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3883                     pentium4*)          echo -xtarget=pentium4           ;;
3884                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3885                     *-sse3)             echo -xarch=sse3                 ;;
3886                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3887                     bonnell)                   echo -xarch=ssse3         ;;
3888                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3889                     westmere)                  echo -xtarget=westmere    ;;
3890                     silvermont)                echo -xarch=sse4_2        ;;
3891                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3892                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3893                                                echo -xarch=avx           ;;
3894                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3895                     btver1)                    echo -xarch=amdsse4a      ;;
3896                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3897                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3898                     k8|opteron|athlon64|athlon-fx)
3899                                                echo -xarch=sse2a         ;;
3900                     athlon*)                   echo -xarch=pentium_proa  ;;
3901                 esac
3902                 ;;
3903             -std=c99)             echo -xc99              ;;
3904             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3905             -fPIC)                echo -KPIC -xcode=pic32 ;;
3906             -W*,*)                echo $flag              ;;
3907             -f*-*|-W*|-mimpure-text)                      ;;
3908             -shared)              echo -G                 ;;
3909             *)                    echo $flag              ;;
3910         esac
3911     done
3912 }
3913
3914 tms470_flags(){
3915     for flag; do
3916         case $flag in
3917             -march=*|-mcpu=*)
3918                 case "${flag#*=}" in
3919                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3920                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3921                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3922                     armv6*|arm11*)          echo -mv=6   ;;
3923                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3924                                             echo -mv=5e  ;;
3925                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3926                 esac
3927                 ;;
3928             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3929             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3930             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3931             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3932             -msoft-float)   echo --float_support=vfplib       ;;
3933             -O[0-3]|-mf=*)  echo $flag                        ;;
3934             -g)             echo -g -mn                       ;;
3935             -pds=*)         echo $flag                        ;;
3936             -D*|-I*)        echo $flag                        ;;
3937             --gcc|--abi=*)  echo $flag                        ;;
3938             -me)            echo $flag                        ;;
3939         esac
3940     done
3941 }
3942
3943 probe_cc(){
3944     pfx=$1
3945     _cc=$2
3946     first=$3
3947
3948     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3949     unset _ld_o _ldflags _ld_lib _ld_path
3950     unset _depflags _DEPCMD _DEPFLAGS
3951     _flags_filter=echo
3952
3953     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3954         true # no-op to avoid reading stdin in following checks
3955     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3956         _type=llvm_gcc
3957         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3958         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3959         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3960         _cflags_speed='-O3'
3961         _cflags_size='-Os'
3962     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3963         _type=gcc
3964         gcc_version=$($_cc --version | head -n1)
3965         gcc_basever=$($_cc -dumpversion)
3966         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3967         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3968         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3969         case $gcc_basever in
3970             2) ;;
3971             2.*) ;;
3972             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3973         esac
3974         if [ "$first" = true ]; then
3975             case $gcc_basever in
3976                 4.2*)
3977                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3978             esac
3979         fi
3980         _cflags_speed='-O3'
3981         _cflags_size='-Os'
3982     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3983         _type=icc
3984         _ident=$($_cc --version | head -n1)
3985         _depflags='-MMD'
3986         _cflags_speed='-O3'
3987         _cflags_size='-Os'
3988         _cflags_noopt='-O1'
3989         _flags_filter=icc_flags
3990     elif $_cc -v 2>&1 | grep -q xlc; then
3991         _type=xlc
3992         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3993         _cflags_speed='-O5'
3994         _cflags_size='-O5 -qcompact'
3995     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3996         _type=ccc
3997         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3998         _DEPFLAGS='-M'
3999         _cflags_speed='-fast'
4000         _cflags_size='-O1'
4001         _flags_filter=ccc_flags
4002     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4003         test -d "$sysroot" || die "No valid sysroot specified."
4004         _type=armcc
4005         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4006         armcc_conf="$PWD/armcc.conf"
4007         $_cc --arm_linux_configure                 \
4008              --arm_linux_config_file="$armcc_conf" \
4009              --configure_sysroot="$sysroot"        \
4010              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4011              die "Error creating armcc configuration file."
4012         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4013         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4014         as_default="${cross_prefix}gcc"
4015         _depflags='-MMD'
4016         _cflags_speed='-O3'
4017         _cflags_size='-Os'
4018     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4019         _type=tms470
4020         _ident=$($_cc -version | head -n1 | tr -s ' ')
4021         _flags='--gcc --abi=eabi -me'
4022         _cc_e='-ppl -fe=$@'
4023         _cc_o='-fe=$@'
4024         _depflags='-ppa -ppd=$(@:.o=.d)'
4025         _cflags_speed='-O3 -mf=5'
4026         _cflags_size='-O3 -mf=2'
4027         _flags_filter=tms470_flags
4028     elif $_cc -v 2>&1 | grep -q clang; then
4029         _type=clang
4030         _ident=$($_cc --version 2>/dev/null | head -n1)
4031         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4032         _cflags_speed='-O3'
4033         _cflags_size='-Os'
4034     elif $_cc -V 2>&1 | grep -q Sun; then
4035         _type=suncc
4036         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4037         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4038         _DEPFLAGS='-xM1 -xc99'
4039         _ldflags='-std=c99'
4040         _cflags_speed='-O5'
4041         _cflags_size='-O5 -xspace'
4042         _flags_filter=suncc_flags
4043     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4044         _type=pathscale
4045         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4046         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4047         _cflags_speed='-O2'
4048         _cflags_size='-Os'
4049         _flags_filter='filter_out -Wdisabled-optimization'
4050     elif $_cc -v 2>&1 | grep -q Open64; then
4051         _type=open64
4052         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4053         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4054         _cflags_speed='-O2'
4055         _cflags_size='-Os'
4056         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4057     elif $_cc -V 2>&1 | grep -q Portland; then
4058         _type=pgi
4059         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4060         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4061         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4062         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4063         _cflags_noopt="-O"
4064         _flags_filter=pgi_flags
4065     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4066         _type=armasm
4067         _ident=$($_cc | head -n1)
4068         # 4509: "This form of conditional instruction is deprecated"
4069         _flags="-nologo -ignore 4509"
4070         _flags_filter=armasm_flags
4071     elif $_cc 2>&1 | grep -q Intel; then
4072         _type=icl
4073         _ident=$($_cc 2>&1 | head -n1)
4074         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4075         # Not only is O3 broken on 13.x+ but it is slower on all previous
4076         # versions (tested) as well.
4077         _cflags_speed="-O2"
4078         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4079         if $_cc 2>&1 | grep -q Linker; then
4080             _ld_o='-out:$@'
4081         else
4082             _ld_o='-Fe$@'
4083         fi
4084         _cc_o='-Fo$@'
4085         _cc_e='-P'
4086         _flags_filter=icl_flags
4087         _ld_lib='lib%.a'
4088         _ld_path='-libpath:'
4089         # -Qdiag-error to make icl error when seeing certain unknown arguments
4090         _flags='-nologo -Qdiag-error:4044,10157'
4091         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4092         # with MSVC which enables it by default.
4093         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4094         disable stripping
4095     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4096         _type=msvc
4097         _ident=$($_cc 2>&1 | head -n1)
4098         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4099         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4100         _cflags_speed="-O2"
4101         _cflags_size="-O1"
4102         if $_cc -nologo- 2>&1 | grep -q Linker; then
4103             _ld_o='-out:$@'
4104         else
4105             _ld_o='-Fe$@'
4106         fi
4107         _cc_o='-Fo$@'
4108         _cc_e='-P -Fi$@'
4109         _flags_filter=msvc_flags
4110         _ld_lib='lib%.a'
4111         _ld_path='-libpath:'
4112         _flags='-nologo'
4113         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4114         disable stripping
4115     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4116         _type=cparser
4117         _ident=$($_cc --version | head -n1)
4118         _depflags='-MMD'
4119         _cflags_speed='-O4'
4120         _cflags_size='-O2'
4121         _flags_filter=cparser_flags
4122     fi
4123
4124     eval ${pfx}_type=\$_type
4125     eval ${pfx}_ident=\$_ident
4126 }
4127
4128 set_ccvars(){
4129     eval ${1}_C=\${_cc_c-\${${1}_C}}
4130     eval ${1}_E=\${_cc_e-\${${1}_E}}
4131     eval ${1}_O=\${_cc_o-\${${1}_O}}
4132
4133     if [ -n "$_depflags" ]; then
4134         eval ${1}_DEPFLAGS=\$_depflags
4135     else
4136         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4137         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4138         eval DEP${1}FLAGS=\$_flags
4139     fi
4140 }
4141
4142 probe_cc cc "$cc" "true"
4143 cflags_filter=$_flags_filter
4144 cflags_speed=$_cflags_speed
4145 cflags_size=$_cflags_size
4146 cflags_noopt=$_cflags_noopt
4147 add_cflags $_flags $_cflags
4148 cc_ldflags=$_ldflags
4149 set_ccvars CC
4150
4151 probe_cc hostcc "$host_cc"
4152 host_cflags_filter=$_flags_filter
4153 add_host_cflags  $_flags $_cflags
4154 set_ccvars HOSTCC
4155
4156 test -n "$cc_type" && enable $cc_type ||
4157     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4158
4159 : ${as_default:=$cc}
4160 : ${objcc_default:=$cc}
4161 : ${dep_cc_default:=$cc}
4162 : ${ld_default:=$cc}
4163 : ${host_ld_default:=$host_cc}
4164 set_default ar as objcc dep_cc ld ln_s host_ld windres
4165
4166 probe_cc as "$as"
4167 asflags_filter=$_flags_filter
4168 add_asflags $_flags $_cflags
4169 set_ccvars AS
4170
4171 probe_cc objcc "$objcc"
4172 objcflags_filter=$_flags_filter
4173 add_objcflags $_flags $_cflags
4174 set_ccvars OBJC
4175
4176 probe_cc ld "$ld"
4177 ldflags_filter=$_flags_filter
4178 add_ldflags $_flags $_ldflags
4179 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4180 LD_O=${_ld_o-$LD_O}
4181 LD_LIB=${_ld_lib-$LD_LIB}
4182 LD_PATH=${_ld_path-$LD_PATH}
4183
4184 probe_cc hostld "$host_ld"
4185 host_ldflags_filter=$_flags_filter
4186 add_host_ldflags $_flags $_ldflags
4187 HOSTLD_O=${_ld_o-$HOSTLD_O}
4188
4189 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4190     probe_cc depcc "$dep_cc"
4191     CCDEP=${_DEPCMD:-$DEPCMD}
4192     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4193     DEPCCFLAGS=$_flags
4194 fi
4195
4196 if $ar 2>&1 | grep -q Microsoft; then
4197     arflags="-nologo"
4198     ar_o='-out:$@'
4199 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4200     arflags="rq"
4201     ar_o='$@'
4202 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4203     arflags='-Xany -r -c'
4204     ar_o='$@'
4205 elif $ar 2>&1 | grep -q "\[D\] "; then
4206     arflags="rcD"
4207     ar_o='$@'
4208 else
4209     arflags="rc"
4210     ar_o='$@'
4211 fi
4212
4213 add_cflags $extra_cflags
4214 add_cxxflags $extra_cxxflags
4215 add_objcflags $extra_objcflags
4216 add_asflags $extra_cflags
4217
4218 if test -n "$sysroot"; then
4219     case "$cc_type" in
4220         gcc|llvm_gcc|clang)
4221             add_cppflags --sysroot="$sysroot"
4222             add_ldflags --sysroot="$sysroot"
4223 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4224             add_cppflags -isysroot "$sysroot"
4225             add_ldflags -isysroot "$sysroot"
4226         ;;
4227         tms470)
4228             add_cppflags -I"$sysinclude"
4229             add_ldflags  --sysroot="$sysroot"
4230         ;;
4231     esac
4232 fi
4233
4234 if test "$cpu" = host; then
4235     enabled cross_compile &&
4236         die "--cpu=host makes no sense when cross-compiling."
4237
4238     case "$cc_type" in
4239         gcc|llvm_gcc)
4240             check_native(){
4241                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4242                 sed -n "/cc1.*$1=/{
4243                             s/.*$1=\\([^ ]*\\).*/\\1/
4244                             p
4245                             q
4246                         }" $TMPE
4247             }
4248             cpu=$(check_native -march || check_native -mcpu)
4249         ;;
4250         clang)
4251             check_native(){
4252                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4253                 sed -n "/cc1.*-target-cpu /{
4254                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4255                             p
4256                             q
4257                         }" $TMPE
4258             }
4259             cpu=$(check_native -march)
4260         ;;
4261     esac
4262
4263     test "${cpu:-host}" = host &&
4264         die "--cpu=host not supported with compiler $cc"
4265 fi
4266
4267 # Deal with common $arch aliases
4268 case "$arch" in
4269     aarch64|arm64)
4270         arch="aarch64"
4271     ;;
4272     arm*|iPad*|iPhone*)
4273         arch="arm"
4274     ;;
4275     mips*|IP*)
4276         case "$arch" in
4277         *el)
4278             add_cppflags -EL
4279             add_ldflags -EL
4280         ;;
4281         *eb)
4282             add_cppflags -EB
4283             add_ldflags -EB
4284         ;;
4285         esac
4286         arch="mips"
4287     ;;
4288     parisc*|hppa*)
4289         arch="parisc"
4290     ;;
4291     "Power Macintosh"|ppc*|powerpc*)
4292         arch="ppc"
4293     ;;
4294     s390|s390x)
4295         arch="s390"
4296     ;;
4297     sh4|sh)
4298         arch="sh4"
4299     ;;
4300     sun4*|sparc*)
4301         arch="sparc"
4302     ;;
4303     tilegx|tile-gx)
4304         arch="tilegx"
4305     ;;
4306     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4307         arch="x86"
4308     ;;
4309 esac
4310
4311 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4312 enable $arch
4313
4314 # Add processor-specific flags
4315 if enabled aarch64; then
4316
4317     case $cpu in
4318         armv*)
4319             cpuflags="-march=$cpu"
4320         ;;
4321         *)
4322             cpuflags="-mcpu=$cpu"
4323         ;;
4324     esac
4325
4326 elif enabled alpha; then
4327
4328     cpuflags="-mcpu=$cpu"
4329
4330 elif enabled arm; then
4331
4332     check_arm_arch() {
4333         check_cpp_condition stddef.h \
4334             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4335             $cpuflags
4336     }
4337
4338     probe_arm_arch() {
4339         if   check_arm_arch 4;        then echo armv4
4340         elif check_arm_arch 4T;       then echo armv4t
4341         elif check_arm_arch 5;        then echo armv5
4342         elif check_arm_arch 5E;       then echo armv5e
4343         elif check_arm_arch 5T;       then echo armv5t
4344         elif check_arm_arch 5TE;      then echo armv5te
4345         elif check_arm_arch 5TEJ;     then echo armv5te
4346         elif check_arm_arch 6;        then echo armv6
4347         elif check_arm_arch 6J;       then echo armv6j
4348         elif check_arm_arch 6K;       then echo armv6k
4349         elif check_arm_arch 6Z;       then echo armv6z
4350         elif check_arm_arch 6ZK;      then echo armv6zk
4351         elif check_arm_arch 6T2;      then echo armv6t2
4352         elif check_arm_arch 7;        then echo armv7
4353         elif check_arm_arch 7A  7_A;  then echo armv7-a
4354         elif check_arm_arch 7S;       then echo armv7-a
4355         elif check_arm_arch 7R  7_R;  then echo armv7-r
4356         elif check_arm_arch 7M  7_M;  then echo armv7-m
4357         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4358         elif check_arm_arch 8A  8_A;  then echo armv8-a
4359         fi
4360     }
4361
4362     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4363
4364     case $cpu in
4365         armv*)
4366             cpuflags="-march=$cpu"
4367             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4368         ;;
4369         *)
4370             cpuflags="-mcpu=$cpu"
4371             case $cpu in
4372                 cortex-a*)                               subarch=armv7a  ;;
4373                 cortex-r*)                               subarch=armv7r  ;;
4374                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4375                 arm11*)                                  subarch=armv6   ;;
4376                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4377                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4378                 *)                             subarch=$(probe_arm_arch) ;;
4379             esac
4380         ;;
4381     esac
4382
4383     case "$subarch" in
4384         armv5t*)    enable fast_clz                ;;
4385         armv[6-8]*)
4386             enable fast_clz
4387             disabled fast_unaligned || enable fast_unaligned
4388             ;;
4389     esac
4390
4391 elif enabled avr32; then
4392
4393     case $cpu in
4394         ap7[02]0[0-2])
4395             subarch="avr32_ap"
4396             cpuflags="-mpart=$cpu"
4397         ;;
4398         ap)
4399             subarch="avr32_ap"
4400             cpuflags="-march=$cpu"
4401         ;;
4402         uc3[ab]*)
4403             subarch="avr32_uc"
4404             cpuflags="-mcpu=$cpu"
4405         ;;
4406         uc)
4407             subarch="avr32_uc"
4408             cpuflags="-march=$cpu"
4409         ;;
4410     esac
4411
4412 elif enabled bfin; then
4413
4414     cpuflags="-mcpu=$cpu"
4415
4416 elif enabled mips; then
4417
4418     cpuflags="-march=$cpu"
4419
4420     if [ "$cpu" != "generic" ]; then
4421         disable mips32r2
4422         disable mips32r5
4423         disable mips64r2
4424         disable mips32r6
4425         disable mips64r6
4426         disable loongson2
4427         disable loongson3
4428
4429         case $cpu in
4430             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4431                 enable mips32r2
4432                 disable msa
4433             ;;
4434             p5600|i6400|p6600)
4435                 disable mipsdsp
4436                 disable mipsdspr2
4437             ;;
4438             loongson*)
4439                 enable loongson2
4440                 enable loongson3
4441                 enable local_aligned_8 local_aligned_16 local_aligned_32
4442                 enable simd_align_16
4443                 enable fast_64bit
4444                 enable fast_clz
4445                 enable fast_cmov
4446                 enable fast_unaligned
4447                 disable aligned_stack
4448                 disable mipsfpu
4449                 disable mipsdsp
4450                 disable mipsdspr2
4451                 case $cpu in
4452                     loongson3*)
4453                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4454                     ;;
4455                     loongson2e)
4456                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4457                     ;;
4458                     loongson2f)
4459                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4460                     ;;
4461                 esac
4462             ;;
4463             *)
4464                 # Unknown CPU. Disable everything.
4465                 warn "unknown CPU. Disabling all MIPS optimizations."
4466                 disable mipsfpu
4467                 disable mipsdsp
4468                 disable mipsdspr2
4469                 disable msa
4470                 disable mmi
4471             ;;
4472         esac
4473
4474         case $cpu in
4475             24kc)
4476                 disable mipsfpu
4477                 disable mipsdsp
4478                 disable mipsdspr2
4479             ;;
4480             24kf*)
4481                 disable mipsdsp
4482                 disable mipsdspr2
4483             ;;
4484             24kec|34kc|1004kc)
4485                 disable mipsfpu
4486                 disable mipsdspr2
4487             ;;
4488             24kef*|34kf*|1004kf*)
4489                 disable mipsdspr2
4490             ;;
4491             74kc)
4492                 disable mipsfpu
4493             ;;
4494             p5600)
4495                 enable mips32r5
4496                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4497             ;;
4498             i6400)
4499                 enable mips64r6
4500                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4501             ;;
4502             p6600)
4503                 enable mips64r6
4504                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4505             ;;
4506         esac
4507     else
4508         # We do not disable anything. Is up to the user to disable the unwanted features.
4509         warn 'generic cpu selected'
4510     fi
4511
4512 elif enabled ppc; then
4513
4514     disable ldbrx
4515
4516     case $(tolower $cpu) in
4517         601|ppc601|powerpc601)
4518             cpuflags="-mcpu=601"
4519             disable altivec
4520         ;;
4521         603*|ppc603*|powerpc603*)
4522             cpuflags="-mcpu=603"
4523             disable altivec
4524         ;;
4525         604*|ppc604*|powerpc604*)
4526             cpuflags="-mcpu=604"
4527             disable altivec
4528         ;;
4529         g3|75*|ppc75*|powerpc75*)
4530             cpuflags="-mcpu=750"
4531             disable altivec
4532         ;;
4533         g4|745*|ppc745*|powerpc745*)
4534             cpuflags="-mcpu=7450"
4535             disable vsx
4536         ;;
4537         74*|ppc74*|powerpc74*)
4538             cpuflags="-mcpu=7400"
4539             disable vsx
4540         ;;
4541         g5|970|ppc970|powerpc970)
4542             cpuflags="-mcpu=970"
4543             disable vsx
4544         ;;
4545         power[3-6]*)
4546             cpuflags="-mcpu=$cpu"
4547             disable vsx
4548         ;;
4549         power[7-8]*)
4550             cpuflags="-mcpu=$cpu"
4551         ;;
4552         cell)
4553             cpuflags="-mcpu=cell"
4554             enable ldbrx
4555             disable vsx
4556         ;;
4557         e500mc)
4558             cpuflags="-mcpu=e500mc"
4559             disable altivec
4560         ;;
4561         e500v2)
4562             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4563             disable altivec
4564             disable dcbzl
4565         ;;
4566         e500)
4567             cpuflags="-mcpu=8540 -mhard-float"
4568             disable altivec
4569             disable dcbzl
4570         ;;
4571     esac
4572
4573 elif enabled sparc; then
4574
4575     case $cpu in
4576         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4577             cpuflags="-mcpu=$cpu"
4578         ;;
4579         ultrasparc*|niagara[234])
4580             cpuflags="-mcpu=$cpu"
4581         ;;
4582     esac
4583
4584 elif enabled x86; then
4585
4586     case $cpu in
4587         i[345]86|pentium)
4588             cpuflags="-march=$cpu"
4589             disable i686
4590             disable mmx
4591         ;;
4592         # targets that do NOT support nopl and conditional mov (cmov)
4593         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4594             cpuflags="-march=$cpu"
4595             disable i686
4596         ;;
4597         # targets that do support nopl and conditional mov (cmov)
4598         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4599         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4600         |amdfam10|barcelona|b[dt]ver*|znver*)
4601             cpuflags="-march=$cpu"
4602             enable i686
4603             enable fast_cmov
4604         ;;
4605         # targets that do support conditional mov but on which it's slow
4606         pentium4|pentium4m|prescott|nocona)
4607             cpuflags="-march=$cpu"
4608             enable i686
4609             disable fast_cmov
4610         ;;
4611     esac
4612
4613 fi
4614
4615 if [ "$cpu" != generic ]; then
4616     add_cflags  $cpuflags
4617     add_asflags $cpuflags
4618     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4619 fi
4620
4621 # compiler sanity check
4622 check_exec <<EOF
4623 int main(void){ return 0; }
4624 EOF
4625 if test "$?" != 0; then
4626     echo "$cc is unable to create an executable file."
4627     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4628         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4629         echo "Only do this if you know what cross compiling means."
4630     fi
4631     die "C compiler test failed."
4632 fi
4633
4634 add_cppflags -D_ISOC99_SOURCE
4635 add_cxxflags -D__STDC_CONSTANT_MACROS
4636 add_cxxflags -std=c++98
4637
4638 # some compilers silently accept -std=c11, so we also need to check that the
4639 # version macro is defined properly
4640 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4641     add_cflags -std=c11
4642 else
4643     check_cflags -std=c99
4644 fi
4645
4646 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4647 #include <stdlib.h>
4648 EOF
4649 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4650 #include <stdlib.h>
4651 EOF
4652
4653 add_host_cppflags -D_ISOC99_SOURCE
4654 check_host_cflags -std=c99
4655 check_host_cflags -Wall
4656 check_host_cflags -O3
4657
4658 check_64bit(){
4659     arch32=$1
4660     arch64=$2
4661     expr=$3
4662     check_code cc "" "int test[2*($expr) - 1]" &&
4663         subarch=$arch64 || subarch=$arch32
4664 }
4665
4666 case "$arch" in
4667     aarch64|alpha|ia64)
4668         spic=$shared
4669     ;;
4670     mips)
4671         check_64bit mips mips64 '_MIPS_SIM > 1'
4672         spic=$shared
4673     ;;
4674     parisc)
4675         check_64bit parisc parisc64 'sizeof(void *) > 4'
4676         spic=$shared
4677     ;;
4678     ppc)
4679         check_64bit ppc ppc64 'sizeof(void *) > 4'
4680         spic=$shared
4681     ;;
4682     s390)
4683         check_64bit s390 s390x 'sizeof(void *) > 4'
4684         spic=$shared
4685     ;;
4686     sparc)
4687         check_64bit sparc sparc64 'sizeof(void *) > 4'
4688         spic=$shared
4689     ;;
4690     x86)
4691         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4692         # Treat x32 as x64 for now. Note it also needs spic=$shared
4693         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4694             subarch=x86_64
4695         if test "$subarch" = "x86_64"; then
4696             spic=$shared
4697         fi
4698     ;;
4699     ppc)
4700         check_cc <<EOF && subarch="ppc64"
4701         int test[(int)sizeof(char*) - 7];
4702 EOF
4703     ;;
4704 esac
4705
4706 enable $subarch
4707 enabled spic && enable_weak pic
4708
4709 # OS specific
4710 case $target_os in
4711     aix)
4712         SHFLAGS=-shared
4713         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4714         enabled shared && add_ldflags -Wl,-brtl
4715         ;;
4716     android)
4717         disable symver
4718         enable section_data_rel_ro
4719         SLIB_INSTALL_NAME='$(SLIBNAME)'
4720         SLIB_INSTALL_LINKS=
4721         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4722         ;;
4723     haiku)
4724         prefix_default="/boot/common"
4725         network_extralibs="-lnetwork"
4726         host_libs=
4727         ;;
4728     sunos)
4729         SHFLAGS='-shared -Wl,-h,$$(@F)'
4730         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4731         network_extralibs="-lsocket -lnsl"
4732         add_cppflags -D__EXTENSIONS__
4733         # When using suncc to build, the Solaris linker will mark
4734         # an executable with each instruction set encountered by
4735         # the Solaris assembler.  As our libraries contain their own
4736         # guards for processor-specific code, instead suppress
4737         # generation of the HWCAPS ELF section on Solaris x86 only.
4738         enabled_all suncc x86 &&
4739             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4740             add_ldflags -Wl,-M,mapfile
4741         nm_default='nm -P -g'
4742         version_script='-M'
4743         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4744         ;;
4745     netbsd)
4746         disable symver
4747         oss_indev_extralibs="-lossaudio"
4748         oss_outdev_extralibs="-lossaudio"
4749         enabled gcc || check_ldflags -Wl,-zmuldefs
4750         ;;
4751     openbsd|bitrig)
4752         disable symver
4753         SHFLAGS='-shared'
4754         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4755         SLIB_INSTALL_LINKS=
4756         oss_indev_extralibs="-lossaudio"
4757         oss_outdev_extralibs="-lossaudio"
4758         ;;
4759     dragonfly)
4760         disable symver
4761         ;;
4762     freebsd)
4763         ;;
4764     bsd/os)
4765         add_extralibs -lpoll -lgnugetopt
4766         strip="strip -d"
4767         ;;
4768     darwin)
4769         enabled ppc && add_asflags -force_cpusubtype_ALL
4770         install_name_dir_default='$(SHLIBDIR)'
4771         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4772         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4773         strip="${strip} -x"
4774         add_ldflags -Wl,-dynamic,-search_paths_first
4775         SLIBSUF=".dylib"
4776         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4777         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4778         objformat="macho"
4779         enabled x86_64 && objformat="macho64"
4780         enabled_any pic shared x86_64 ||
4781             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4782         check_header dispatch/dispatch.h &&
4783             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4784         version_script='-exported_symbols_list'
4785         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4786         ;;
4787     msys*)
4788         die "Native MSYS builds are discouraged, please use the MINGW environment."
4789         ;;
4790     mingw32*|mingw64*)
4791         if test $target_os = "mingw32ce"; then
4792             disable network
4793         else
4794             target_os=mingw32
4795         fi
4796         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4797         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4798         LIBTARGET=i386
4799         if enabled x86_64; then
4800             LIBTARGET="i386:x86-64"
4801         elif enabled arm; then
4802             LIBTARGET=arm-wince
4803         fi
4804         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4805         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4806         shlibdir_default="$bindir_default"
4807         SLIBPREF=""
4808         SLIBSUF=".dll"
4809         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4810         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4811         dlltool="${cross_prefix}dlltool"
4812         if check_cmd lib.exe -list; then
4813             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4814             if enabled x86_64; then
4815                 LIBTARGET=x64
4816             fi
4817         elif check_cmd $dlltool --version; then
4818             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4819         fi
4820         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4821         SLIB_INSTALL_LINKS=
4822         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4823         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4824         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4825         objformat="win32"
4826         ranlib=:
4827         enable dos_paths
4828         check_ldflags -Wl,--nxcompat,--dynamicbase
4829         # Lets work around some stupidity in binutils.
4830         # ld will strip relocations from executables even though we need them
4831         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4832         # however ld then forgets what the entry point should be (oops) so we
4833         # have to manually (re)set it.
4834         if enabled x86_32; then
4835             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4836         elif enabled x86_64; then
4837             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4838             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4839             # Set image base >4GB for extra entropy with HEASLR
4840             add_ldexeflags -Wl,--image-base,0x140000000
4841             append SHFLAGS -Wl,--image-base,0x180000000
4842         fi
4843         ;;
4844     win32|win64)
4845         disable symver
4846         if enabled shared; then
4847             # Link to the import library instead of the normal static library
4848             # for shared libs.
4849             LD_LIB='%.lib'
4850             # Cannot build both shared and static libs with MSVC or icl.
4851             disable static