configure: remove libdl dependency from libndi_newtek
[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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
189
190 External library support:
191
192   Using any of the following switches will allow FFmpeg to link to the
193   corresponding external library. All the components depending on that library
194   will become enabled, if all their other dependencies are met and they are not
195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
196   libwavpack and allow the libwavpack encoder to be built, unless it is
197   specifically disabled with --disable-encoder=libwavpack.
198
199   Note that only the system libraries are auto-detected. All the other external
200   libraries must be explicitly enabled.
201
202   Also note that the following help text describes the purpose of the libraries
203   themselves, not all their features will necessarily be usable by FFmpeg.
204
205   --disable-alsa           disable ALSA support [autodetect]
206   --disable-appkit         disable Apple AppKit framework [autodetect]
207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
208   --enable-avisynth        enable reading of AviSynth script files [no]
209   --disable-bzlib          disable bzlib [autodetect]
210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
212   --enable-frei0r          enable frei0r video filtering [no]
213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
214                            if openssl, librtmp or gmp is not used [no]
215   --enable-gmp             enable gmp, needed for rtmp(t)e support
216                            if openssl or librtmp is not used [no]
217   --enable-gnutls          enable gnutls, needed for https support
218                            if openssl is not used [no]
219   --disable-iconv          disable iconv [autodetect]
220   --disable-jack           disable libjack support [autodetect]
221   --enable-jni             enable JNI support [no]
222   --enable-ladspa          enable LADSPA audio filtering [no]
223   --enable-libass          enable libass subtitles rendering,
224                            needed for subtitles and ass filter [no]
225   --enable-libbluray       enable BluRay reading using libbluray [no]
226   --enable-libbs2b         enable bs2b DSP library [no]
227   --enable-libcaca         enable textual display using libcaca [no]
228   --enable-libcelt         enable CELT decoding via libcelt [no]
229   --enable-libcdio         enable audio CD grabbing with libcdio [no]
230   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
231                            and libraw1394 [no]
232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
234   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
235   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
236   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
237   --enable-libgme          enable Game Music Emu via libgme [no]
238   --enable-libgsm          enable GSM de/encoding via libgsm [no]
239   --enable-libiec61883     enable iec61883 via libiec61883 [no]
240   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
242   --enable-libmodplug      enable ModPlug via libmodplug [no]
243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
246   --enable-libopencv       enable video filtering via libopencv [no]
247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
250   --enable-libopus         enable Opus de/encoding via libopus [no]
251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
252   --enable-librsvg         enable SVG rasterization via librsvg [no]
253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
258   --enable-libsoxr         enable Include libsoxr resampling [no]
259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
260   --enable-libssh          enable SFTP protocol via libssh [no]
261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
262   --enable-libtheora       enable Theora encoding via libtheora [no]
263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
265   --enable-libvidstab      enable video stabilization using vid.stab [no]
266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
269                            native implementation exists [no]
270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
272   --enable-libwebp         enable WebP encoding via libwebp [no]
273   --enable-libx264         enable H.264 encoding via x264 [no]
274   --enable-libx265         enable HEVC encoding via x265 [no]
275   --enable-libxavs         enable AVS encoding via xavs [no]
276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
280   --enable-libxvid         enable Xvid encoding via xvidcore,
281                            native MPEG-4/Xvid encoder exists [no]
282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
284   --enable-libzmq          enable message passing via libzmq [no]
285   --enable-libzvbi         enable teletext support via libzvbi [no]
286   --disable-lzma           disable lzma [autodetect]
287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
289   --enable-mediacodec      enable Android MediaCodec support [no]
290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
291   --enable-openal          enable OpenAL 1.1 capture support [no]
292   --enable-opencl          enable OpenCL code
293   --enable-opengl          enable OpenGL rendering [no]
294   --enable-openssl         enable openssl, needed for https support
295                            if gnutls is not used [no]
296   --disable-sndio          disable sndio support [autodetect]
297   --disable-schannel       disable SChannel SSP, needed for TLS support on
298                            Windows if openssl and gnutls are not used [autodetect]
299   --disable-sdl2           disable sdl2 [autodetect]
300   --disable-securetransport disable Secure Transport, needed for TLS support
301                            on OSX if openssl and gnutls are not used [autodetect]
302   --disable-xlib           disable xlib [autodetect]
303   --disable-zlib           disable zlib [autodetect]
304
305   The following libraries provide various hardware acceleration features:
306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
312   --enable-libdrm          enable DRM code (Linux) [no]
313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
316   --disable-nvenc          disable Nvidia video encoding code [autodetect]
317   --enable-omx             enable OpenMAX IL code [no]
318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
319   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
320   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
321   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
324
325 Toolchain options:
326   --arch=ARCH              select architecture [$arch]
327   --cpu=CPU                select the minimum required CPU (affects
328                            instruction selection, may crash on older CPUs)
329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
330   --progs-suffix=SUFFIX    program name suffix []
331   --enable-cross-compile   assume a cross-compiler is used
332   --sysroot=PATH           root of cross-build tree
333   --sysinclude=PATH        location of cross-build system headers
334   --target-os=OS           compiler targets OS [$target_os]
335   --target-exec=CMD        command to run executables on target
336   --target-path=DIR        path to view of build directory on target
337   --target-samples=DIR     path to samples directory on target
338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
339   --toolchain=NAME         set tool defaults according to NAME
340   --nm=NM                  use nm tool NM [$nm_default]
341   --ar=AR                  use archive tool AR [$ar_default]
342   --as=AS                  use assembler AS [$as_default]
343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
344   --strip=STRIP            use strip tool STRIP [$strip_default]
345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
347   --cc=CC                  use C compiler CC [$cc_default]
348   --cxx=CXX                use C compiler CXX [$cxx_default]
349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
352   --ld=LD                  use linker LD [$ld_default]
353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
357   --host-cc=HOSTCC         use host C compiler HOSTCC
358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
360   --host-ld=HOSTLD         use host linker HOSTLD
361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
362   --host-libs=HLIBS        use libs HLIBS when linking for host
363   --host-os=OS             compiler host OS [$target_os]
364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
369   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
371   --extra-version=STRING   version string suffix []
372   --optflags=OPTFLAGS      override optimization-related compiler flags
373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
374   --build-suffix=SUFFIX    library name suffix []
375   --enable-pic             build position-independent code
376   --enable-thumb           compile for Thumb instruction set
377   --enable-lto             use link-time optimization
378   --env="ENV=override"     override the environment variables
379
380 Advanced options (experts only):
381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
382   --custom-allocator=NAME  use a supported custom allocator
383   --disable-symver         disable symbol versioning
384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
385   --disable-safe-bitstream-reader
386                            disable buffer boundary checking in bitreaders
387                            (faster, but may crash)
388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
389
390 Optimization options (experts only):
391   --disable-asm            disable all assembly optimizations
392   --disable-altivec        disable AltiVec optimizations
393   --disable-vsx            disable VSX optimizations
394   --disable-power8         disable POWER8 optimizations
395   --disable-amd3dnow       disable 3DNow! optimizations
396   --disable-amd3dnowext    disable 3DNow! extended optimizations
397   --disable-mmx            disable MMX optimizations
398   --disable-mmxext         disable MMXEXT optimizations
399   --disable-sse            disable SSE optimizations
400   --disable-sse2           disable SSE2 optimizations
401   --disable-sse3           disable SSE3 optimizations
402   --disable-ssse3          disable SSSE3 optimizations
403   --disable-sse4           disable SSE4 optimizations
404   --disable-sse42          disable SSE4.2 optimizations
405   --disable-avx            disable AVX optimizations
406   --disable-xop            disable XOP optimizations
407   --disable-fma3           disable FMA3 optimizations
408   --disable-fma4           disable FMA4 optimizations
409   --disable-avx2           disable AVX2 optimizations
410   --disable-aesni          disable AESNI optimizations
411   --disable-armv5te        disable armv5te optimizations
412   --disable-armv6          disable armv6 optimizations
413   --disable-armv6t2        disable armv6t2 optimizations
414   --disable-vfp            disable VFP optimizations
415   --disable-neon           disable NEON optimizations
416   --disable-inline-asm     disable use of inline assembly
417   --disable-x86asm         disable use of standalone x86 assembly
418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
420   --disable-msa            disable MSA optimizations
421   --disable-mipsfpu        disable floating point MIPS optimizations
422   --disable-mmi            disable Loongson SIMD optimizations
423   --disable-fast-unaligned consider unaligned accesses slow
424
425 Developer options (useful when working on FFmpeg itself):
426   --disable-debug          disable debugging symbols
427   --enable-debug=LEVEL     set the debug level [$debuglevel]
428   --disable-optimizations  disable compiler optimizations
429   --enable-extra-warnings  enable more compiler warnings
430   --disable-stripping      disable stripping of executables and shared libraries
431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
432                            2 causes a slowdown at runtime.
433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
435                            leaks and errors, using the specified valgrind binary.
436                            Cannot be combined with --target-exec
437   --enable-ftrapv          Trap arithmetic overflows
438   --samples=PATH           location of test samples for FATE, if not set use
439                            \$FATE_SAMPLES at make invocation time.
440   --enable-neon-clobber-test check NEON registers for clobbering (should be
441                            used only for debugging purposes)
442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
443                            should be used only for debugging purposes)
444   --enable-random          randomly enable/disable components
445   --disable-random
446   --enable-random=LIST     randomly enable/disable specific components or
447   --disable-random=LIST    component groups. LIST is a comma-separated list
448                            of NAME[:PROB] entries where NAME is a component
449                            (group) and PROB the probability associated with
450                            NAME (default 0.5).
451   --random-seed=VALUE      seed value for --enable/disable-random
452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
453                            (only applies to --disable-optimizations builds)
454   --enable-osfuzz          Enable building fuzzer tool
455   --libfuzzer=PATH         path to libfuzzer
456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
457                            in the name) of tests whose result is ignored
458   --enable-linux-perf      enable Linux Performance Monitor API
459
460 NOTE: Object files are built at the place where configure is launched.
461 EOF
462   exit 0
463 }
464
465 quotes='""'
466 if test -t 1 && which tput >/dev/null 2>&1; then
467     ncolors=$(tput colors)
468     if test -n "$ncolors" && test $ncolors -ge 8; then
469         bold_color=$(tput bold)
470         warn_color=$(tput setaf 3)
471         error_color=$(tput setaf 1)
472         reset_color=$(tput sgr0)
473     fi
474     # 72 used instead of 80 since that's the default of pr
475     ncols=$(tput cols)
476 fi
477 : ${ncols:=72}
478
479 log(){
480     echo "$@" >> $logfile
481 }
482
483 log_file(){
484     log BEGIN $1
485     pr -n -t $1 >> $logfile
486     log END $1
487 }
488
489 warn(){
490     log "WARNING: $*"
491     WARNINGS="${WARNINGS}WARNING: $*\n"
492 }
493
494 die(){
495     log "$@"
496     echo "$error_color$bold_color$@$reset_color"
497     cat <<EOF
498
499 If you think configure made a mistake, make sure you are using the latest
500 version from Git.  If the latest version fails, report the problem to the
501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
502 EOF
503     if disabled logging; then
504         cat <<EOF
505 Rerun configure with logging enabled (do not use --disable-logging), and
506 include the log this produces with your report.
507 EOF
508     else
509         cat <<EOF
510 Include the log file "$logfile" produced by configure as this will help
511 solve the problem.
512 EOF
513     fi
514     exit 1
515 }
516
517 # Avoid locale weirdness, besides we really just want to translate ASCII.
518 toupper(){
519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
520 }
521
522 tolower(){
523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
524 }
525
526 c_escape(){
527     echo "$*" | sed 's/["\\]/\\\0/g'
528 }
529
530 sh_quote(){
531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
533     echo "$v"
534 }
535
536 cleanws(){
537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
538 }
539
540 filter(){
541     pat=$1
542     shift
543     for v; do
544         eval "case $v in $pat) printf '%s ' $v ;; esac"
545     done
546 }
547
548 filter_out(){
549     pat=$1
550     shift
551     for v; do
552         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
553     done
554 }
555
556 map(){
557     m=$1
558     shift
559     for v; do eval $m; done
560 }
561
562 add_suffix(){
563     suffix=$1
564     shift
565     for v; do echo ${v}${suffix}; done
566 }
567
568 set_all(){
569     value=$1
570     shift
571     for var in $*; do
572         eval $var=$value
573     done
574 }
575
576 set_weak(){
577     value=$1
578     shift
579     for var; do
580         eval : \${$var:=$value}
581     done
582 }
583
584 sanitize_var_name(){
585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
586 }
587
588 set_safe(){
589     var=$1
590     shift
591     eval $(sanitize_var_name "$var")='$*'
592 }
593
594 get_safe(){
595     eval echo \$$(sanitize_var_name "$1")
596 }
597
598 pushvar(){
599     for pvar in $*; do
600         eval level=\${${pvar}_level:=0}
601         eval ${pvar}_${level}="\$$pvar"
602         eval ${pvar}_level=$(($level+1))
603     done
604 }
605
606 popvar(){
607     for pvar in $*; do
608         eval level=\${${pvar}_level:-0}
609         test $level = 0 && continue
610         eval level=$(($level-1))
611         eval $pvar="\${${pvar}_${level}}"
612         eval ${pvar}_level=$level
613         eval unset ${pvar}_${level}
614     done
615 }
616
617 request(){
618     for var in $*; do
619         eval ${var}_requested=yes
620         eval $var=
621     done
622 }
623
624 enable(){
625     set_all yes $*
626 }
627
628 disable(){
629     set_all no $*
630 }
631
632 enable_weak(){
633     set_weak yes $*
634 }
635
636 disable_weak(){
637     set_weak no $*
638 }
639
640 enable_safe(){
641     for var; do
642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
643     done
644 }
645
646 disable_safe(){
647     for var; do
648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
649     done
650 }
651
652 do_enable_deep(){
653     for var; do
654         enabled $var && continue
655         eval sel="\$${var}_select"
656         eval sgs="\$${var}_suggest"
657         pushvar var sgs
658         enable_deep $sel
659         popvar sgs
660         enable_deep_weak $sgs
661         popvar var
662     done
663 }
664
665 enable_deep(){
666     do_enable_deep $*
667     enable $*
668 }
669
670 enable_deep_weak(){
671     for var; do
672         disabled $var && continue
673         pushvar var
674         do_enable_deep $var
675         popvar var
676         enable_weak $var
677     done
678 }
679
680 requested(){
681     test "${1#!}" = "$1" && op='=' || op=!=
682     eval test "x\$${1#!}_requested" $op "xyes"
683 }
684
685 enabled(){
686     test "${1#!}" = "$1" && op='=' || op=!=
687     eval test "x\$${1#!}" $op "xyes"
688 }
689
690 disabled(){
691     test "${1#!}" = "$1" && op='=' || op=!=
692     eval test "x\$${1#!}" $op "xno"
693 }
694
695 enabled_all(){
696     for opt; do
697         enabled $opt || return 1
698     done
699 }
700
701 disabled_all(){
702     for opt; do
703         disabled $opt || return 1
704     done
705 }
706
707 enabled_any(){
708     for opt; do
709         enabled $opt && return 0
710     done
711 }
712
713 disabled_any(){
714     for opt; do
715         disabled $opt && return 0
716     done
717     return 1
718 }
719
720 set_default(){
721     for opt; do
722         eval : \${$opt:=\$${opt}_default}
723     done
724 }
725
726 is_in(){
727     value=$1
728     shift
729     for var in $*; do
730         [ $var = $value ] && return 0
731     done
732     return 1
733 }
734
735 do_check_deps(){
736     for cfg; do
737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
738         disabled ${cfg}_checking && continue
739         enable ${cfg}_checking
740         append allopts $cfg
741
742         eval dep_all="\$${cfg}_deps"
743         eval dep_any="\$${cfg}_deps_any"
744         eval dep_con="\$${cfg}_conflict"
745         eval dep_sel="\$${cfg}_select"
746         eval dep_sgs="\$${cfg}_suggest"
747         eval dep_ifa="\$${cfg}_if"
748         eval dep_ifn="\$${cfg}_if_any"
749
750         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
751         do_check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
752         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
753
754         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
755         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
756         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
757         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
758         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
759         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
760
761         if enabled $cfg; then
762             enable_deep $dep_sel
763             enable_deep_weak $dep_sgs
764         fi
765
766         disable ${cfg}_checking
767     done
768 }
769
770 check_deps(){
771     unset allopts
772
773     do_check_deps "$@"
774
775     for cfg in $allopts; do
776         enabled $cfg || continue
777         eval dep_extralibs="\$${cfg}_extralibs"
778         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
779     done
780 }
781
782 print_config(){
783     pfx=$1
784     files=$2
785     shift 2
786     map 'eval echo "$v \${$v:-no}"' "$@" |
787     awk "BEGIN { split(\"$files\", files) }
788         {
789             c = \"$pfx\" toupper(\$1);
790             v = \$2;
791             sub(/yes/, 1, v);
792             sub(/no/,  0, v);
793             for (f in files) {
794                 file = files[f];
795                 if (file ~ /\\.h\$/) {
796                     printf(\"#define %s %d\\n\", c, v) >>file;
797                 } else if (file ~ /\\.asm\$/) {
798                     printf(\"%%define %s %d\\n\", c, v) >>file;
799                 } else if (file ~ /\\.mak\$/) {
800                     n = -v ? \"\" : \"!\";
801                     printf(\"%s%s=yes\\n\", n, c) >>file;
802                 } else if (file ~ /\\.texi\$/) {
803                     pre = -v ? \"\" : \"@c \";
804                     yesno = \$2;
805                     c2 = tolower(c);
806                     gsub(/_/, \"-\", c2);
807                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
808                 }
809             }
810         }"
811 }
812
813 print_enabled(){
814     suf=$1
815     shift
816     for v; do
817         enabled $v && printf "%s\n" ${v%$suf}
818     done
819 }
820
821 append(){
822     var=$1
823     shift
824     eval "$var=\"\$$var $*\""
825 }
826
827 prepend(){
828     var=$1
829     shift
830     eval "$var=\"$* \$$var\""
831 }
832
833 unique(){
834     var=$1
835     uniq_list=""
836     for tok in $(eval echo \$$var); do
837         uniq_list="$(filter_out $tok $uniq_list) $tok"
838     done
839     eval "$var=\"${uniq_list}\""
840 }
841
842 add_cppflags(){
843     append CPPFLAGS "$@"
844 }
845
846 add_cflags(){
847     append CFLAGS $($cflags_filter "$@")
848 }
849
850 add_cflags_headers(){
851     append CFLAGS_HEADERS $($cflags_filter "$@")
852 }
853
854 add_cxxflags(){
855     append CXXFLAGS $($cflags_filter "$@")
856 }
857
858 add_asflags(){
859     append ASFLAGS $($asflags_filter "$@")
860 }
861
862 add_objcflags(){
863     append OBJCFLAGS $($objcflags_filter "$@")
864 }
865
866 add_ldflags(){
867     append LDFLAGS $($ldflags_filter "$@")
868 }
869
870 add_ldexeflags(){
871     append LDEXEFLAGS $($ldflags_filter "$@")
872 }
873
874 add_ldlibflags(){
875     append LDLIBFLAGS $($ldflags_filter "$@")
876 }
877
878 add_stripflags(){
879     append ASMSTRIPFLAGS "$@"
880 }
881
882 add_extralibs(){
883     prepend extralibs $($ldflags_filter "$@")
884 }
885
886 add_host_cppflags(){
887     append host_cppflags "$@"
888 }
889
890 add_host_cflags(){
891     append host_cflags $($host_cflags_filter "$@")
892 }
893
894 add_host_ldflags(){
895     append host_ldflags $($host_ldflags_filter "$@")
896 }
897
898 add_compat(){
899     append compat_objs $1
900     shift
901     map 'add_cppflags -D$v' "$@"
902 }
903
904 check_cmd(){
905     log "$@"
906     "$@" >> $logfile 2>&1
907 }
908
909 check_stat(){
910     log check_stat "$@"
911     stat "$1" >> $logfile 2>&1
912 }
913
914 cc_o(){
915     eval printf '%s\\n' $CC_O
916 }
917
918 cc_e(){
919     eval printf '%s\\n' $CC_E
920 }
921
922 check_cc(){
923     log check_cc "$@"
924     cat > $TMPC
925     log_file $TMPC
926     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
927 }
928
929 check_cxx(){
930     log check_cxx "$@"
931     cat > $TMPCPP
932     log_file $TMPCPP
933     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
934 }
935
936 check_objcc(){
937     log check_objcc "$@"
938     cat > $TMPM
939     log_file $TMPM
940     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
941 }
942
943 check_cpp(){
944     log check_cpp "$@"
945     cat > $TMPC
946     log_file $TMPC
947     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
948 }
949
950 as_o(){
951     eval printf '%s\\n' $AS_O
952 }
953
954 check_as(){
955     log check_as "$@"
956     cat > $TMPS
957     log_file $TMPS
958     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
959 }
960
961 check_inline_asm(){
962     log check_inline_asm "$@"
963     name="$1"
964     code="$2"
965     shift 2
966     disable $name
967     check_cc "$@" <<EOF && enable $name
968 void foo(void){ __asm__ volatile($code); }
969 EOF
970 }
971
972 check_inline_asm_flags(){
973     log check_inline_asm_flags "$@"
974     name="$1"
975     code="$2"
976     flags=''
977     shift 2
978     while [ "$1" != "" ]; do
979       append flags $1
980       shift
981     done;
982     disable $name
983     cat > $TMPC <<EOF
984 void foo(void){ __asm__ volatile($code); }
985 EOF
986     log_file $TMPC
987     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
988     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
989 }
990
991 check_insn(){
992     log check_insn "$@"
993     check_inline_asm ${1}_inline "\"$2\""
994     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
995 }
996
997 check_x86asm(){
998     log check_x86asm "$@"
999     echo "$1" > $TMPS
1000     log_file $TMPS
1001     shift 1
1002     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1003 }
1004
1005 ld_o(){
1006     eval printf '%s\\n' $LD_O
1007 }
1008
1009 check_ld(){
1010     log check_ld "$@"
1011     type=$1
1012     shift 1
1013     flags=$(filter_out '-l*|*.so' $@)
1014     libs=$(filter '-l*|*.so' $@)
1015     check_$type $($cflags_filter $flags) || return
1016     flags=$($ldflags_filter $flags)
1017     libs=$($ldflags_filter $libs)
1018     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1019 }
1020
1021 print_include(){
1022     hdr=$1
1023     test "${hdr%.h}" = "${hdr}" &&
1024         echo "#include $hdr"    ||
1025         echo "#include <$hdr>"
1026 }
1027
1028 check_code(){
1029     log check_code "$@"
1030     check=$1
1031     headers=$2
1032     code=$3
1033     shift 3
1034     {
1035         for hdr in $headers; do
1036             print_include $hdr
1037         done
1038         echo "int main(void) { $code; return 0; }"
1039     } | check_$check "$@"
1040 }
1041
1042 check_cppflags(){
1043     log check_cppflags "$@"
1044     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1045 #include <stdlib.h>
1046 EOF
1047 }
1048
1049 test_cflags(){
1050     log test_cflags "$@"
1051     set -- $($cflags_filter "$@")
1052     check_cc "$@" <<EOF
1053 int x;
1054 EOF
1055 }
1056
1057 check_cflags(){
1058     log check_cflags "$@"
1059     test_cflags "$@" && add_cflags "$@"
1060 }
1061
1062 check_cxxflags(){
1063     log check_cxxflags "$@"
1064     set -- $($cflags_filter "$@")
1065     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1066 int x;
1067 EOF
1068 }
1069
1070 test_objcflags(){
1071     log test_objcflags "$@"
1072     set -- $($objcflags_filter "$@")
1073     check_objcc "$@" <<EOF
1074 int x;
1075 EOF
1076 }
1077
1078 check_objcflags(){
1079     log check_objcflags "$@"
1080     test_objcflags "$@" && add_objcflags "$@"
1081 }
1082
1083 test_ldflags(){
1084     log test_ldflags "$@"
1085     check_ld "cc" "$@" <<EOF
1086 int main(void){ return 0; }
1087 EOF
1088 }
1089
1090 check_ldflags(){
1091     log check_ldflags "$@"
1092     test_ldflags "$@" && add_ldflags "$@"
1093 }
1094
1095 test_stripflags(){
1096     log test_stripflags "$@"
1097     # call check_cc to get a fresh TMPO
1098     check_cc <<EOF
1099 int main(void) { return 0; }
1100 EOF
1101     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1102 }
1103
1104 check_stripflags(){
1105     log check_stripflags "$@"
1106     test_stripflags "$@" && add_stripflags "$@"
1107 }
1108
1109 check_header(){
1110     log check_header "$@"
1111     header=$1
1112     shift
1113     disable_safe $header
1114     check_cpp "$@" <<EOF && enable_safe $header
1115 #include <$header>
1116 int x;
1117 EOF
1118 }
1119
1120 check_header_objcc(){
1121     log check_header_objcc "$@"
1122     rm -f -- "$TMPO"
1123     header=$1
1124     shift
1125     disable_safe $header
1126     {
1127        echo "#include <$header>"
1128        echo "int main(void) { return 0; }"
1129     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1130 }
1131
1132 check_apple_framework(){
1133     log check_apple_framework "$@"
1134     framework="$1"
1135     name="$(tolower $framework)"
1136     header="${framework}/${framework}.h"
1137     disable $name
1138     check_header_objcc $header && enable $name && add_extralibs "-framework $framework"
1139 }
1140
1141 check_func(){
1142     log check_func "$@"
1143     func=$1
1144     shift
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 extern int $func();
1148 int main(void){ $func(); }
1149 EOF
1150 }
1151
1152 check_complexfunc(){
1153     log check_complexfunc "$@"
1154     func=$1
1155     narg=$2
1156     shift 2
1157     test $narg = 2 && args="f, g" || args="f * I"
1158     disable $func
1159     check_ld "cc" "$@" <<EOF && enable $func
1160 #include <complex.h>
1161 #include <math.h>
1162 float foo(complex float f, complex float g) { return $func($args); }
1163 int main(void){ return (int) foo; }
1164 EOF
1165 }
1166
1167 check_mathfunc(){
1168     log check_mathfunc "$@"
1169     func=$1
1170     narg=$2
1171     shift 2
1172     test $narg = 2 && args="f, g" || args="f"
1173     disable $func
1174     check_ld "cc" "$@" <<EOF && enable $func
1175 #include <math.h>
1176 float foo(float f, float g) { return $func($args); }
1177 int main(void){ return (int) foo; }
1178 EOF
1179 }
1180
1181 check_func_headers(){
1182     log check_func_headers "$@"
1183     headers=$1
1184     funcs=$2
1185     shift 2
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "#include <stdint.h>"
1191         for func in $funcs; do
1192             echo "long check_$func(void) { return (long) $func; }"
1193         done
1194         echo "int main(void) { int ret = 0;"
1195         # LTO could optimize out the test functions without this
1196         for func in $funcs; do
1197             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1198         done
1199         echo "return ret; }"
1200     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1201 }
1202
1203 check_class_headers_cpp(){
1204     log check_class_headers_cpp "$@"
1205     headers=$1
1206     classes=$2
1207     shift 2
1208     {
1209         for hdr in $headers; do
1210             echo "#include <$hdr>"
1211         done
1212         echo "int main(void) { "
1213         i=1
1214         for class in $classes; do
1215             echo "$class obj$i;"
1216             i=$(expr $i + 1)
1217         done
1218         echo "return 0; }"
1219     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1220 }
1221
1222 check_cpp_condition(){
1223     log check_cpp_condition "$@"
1224     header=$1
1225     condition=$2
1226     shift 2
1227     check_cpp "$@" <<EOF
1228 #include <$header>
1229 #if !($condition)
1230 #error "unsatisfied condition: $condition"
1231 #endif
1232 EOF
1233 }
1234
1235 test_cflags_cc(){
1236     log test_cflags_cc "$@"
1237     flags=$1
1238     header=$2
1239     condition=$3
1240     shift 3
1241     set -- $($cflags_filter "$flags")
1242     check_cc "$@" <<EOF
1243 #include <$header>
1244 #if !($condition)
1245 #error "unsatisfied condition: $condition"
1246 #endif
1247 EOF
1248 }
1249
1250 check_lib(){
1251     log check_lib "$@"
1252     name="$1"
1253     headers="$2"
1254     funcs="$3"
1255     shift 3
1256     disable $name
1257     check_func_headers "$headers" "$funcs" "$@" &&
1258         enable $name && add_extralibs "$@"
1259 }
1260
1261 check_lib_cpp(){
1262     log check_lib_cpp "$@"
1263     headers="$1"
1264     classes="$2"
1265     shift 2
1266     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1267 }
1268
1269 check_pkg_config(){
1270     log check_pkg_config "$@"
1271     name="$1"
1272     pkg_version="$2"
1273     pkg="${2%% *}"
1274     headers="$3"
1275     funcs="$4"
1276     shift 4
1277     disable $name
1278     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1279     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1280     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1281     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1282         enable $name &&
1283         set_safe "${pkg}_cflags"    $pkg_cflags &&
1284         set_safe "${pkg}_extralibs" $pkg_libs
1285 }
1286
1287 check_exec(){
1288     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1289 }
1290
1291 check_exec_crash(){
1292     log check_exec_crash "$@"
1293     code=$(cat)
1294
1295     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1296     # are safe but may not be available everywhere.  Thus we use
1297     # raise(SIGTERM) instead.  The check is run in a subshell so we
1298     # can redirect the "Terminated" message from the shell.  SIGBUS
1299     # is not defined by standard C so it is used conditionally.
1300
1301     (check_exec "$@") >> $logfile 2>&1 <<EOF
1302 #include <signal.h>
1303 static void sighandler(int sig){
1304     raise(SIGTERM);
1305 }
1306 int foo(void){
1307     $code
1308 }
1309 int (*func_ptr)(void) = foo;
1310 int main(void){
1311     signal(SIGILL, sighandler);
1312     signal(SIGFPE, sighandler);
1313     signal(SIGSEGV, sighandler);
1314 #ifdef SIGBUS
1315     signal(SIGBUS, sighandler);
1316 #endif
1317     return func_ptr();
1318 }
1319 EOF
1320 }
1321
1322 check_type(){
1323     log check_type "$@"
1324     headers=$1
1325     type=$2
1326     shift 2
1327     disable_safe "$type"
1328     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1329 }
1330
1331 check_struct(){
1332     log check_struct "$@"
1333     headers=$1
1334     struct=$2
1335     member=$3
1336     shift 3
1337     disable_safe "${struct}_${member}"
1338     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1339         enable_safe "${struct}_${member}"
1340 }
1341
1342 check_builtin(){
1343     log check_builtin "$@"
1344     name=$1
1345     headers=$2
1346     builtin=$3
1347     shift 3
1348     disable "$name"
1349     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1350 }
1351
1352 check_compile_assert(){
1353     log check_compile_assert "$@"
1354     name=$1
1355     headers=$2
1356     condition=$3
1357     shift 3
1358     disable "$name"
1359     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1360 }
1361
1362 require(){
1363     log require "$@"
1364     name_version="$1"
1365     name="${1%% *}"
1366     headers="$2"
1367     func="$3"
1368     shift 3
1369     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1370 }
1371
1372 require_cpp(){
1373     name="$1"
1374     headers="$2"
1375     classes="$3"
1376     shift 3
1377     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1378 }
1379
1380 require_header(){
1381     log require "$@"
1382     header="$1"
1383     shift
1384     check_header "$header" "$@" || die "ERROR: $header header not found"
1385 }
1386
1387 require_cpp_condition(){
1388     log require "$@"
1389     header="$1"
1390     condition="$2"
1391     shift 2
1392     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1393 }
1394
1395 use_pkg_config(){
1396     log use_pkg_config "$@"
1397     pkg="${2%% *}"
1398     check_pkg_config "$@" || return 1
1399     add_cflags    $(get_safe "${pkg}_cflags")
1400     add_extralibs $(get_safe "${pkg}_extralibs")
1401 }
1402
1403 require_pkg_config(){
1404     log require_pkg_config "$@"
1405     pkg_version="$2"
1406     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1407 }
1408
1409 hostcc_e(){
1410     eval printf '%s\\n' $HOSTCC_E
1411 }
1412
1413 hostcc_o(){
1414     eval printf '%s\\n' $HOSTCC_O
1415 }
1416
1417 check_host_cc(){
1418     log check_host_cc "$@"
1419     cat > $TMPC
1420     log_file $TMPC
1421     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1422 }
1423
1424 check_host_cpp(){
1425     log check_host_cpp "$@"
1426     cat > $TMPC
1427     log_file $TMPC
1428     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1429 }
1430
1431 check_host_cppflags(){
1432     log check_host_cppflags "$@"
1433     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1434 #include <stdlib.h>
1435 EOF
1436 }
1437
1438 check_host_cflags(){
1439     log check_host_cflags "$@"
1440     set -- $($host_cflags_filter "$@")
1441     check_host_cc "$@" <<EOF && append host_cflags "$@"
1442 int x;
1443 EOF
1444 }
1445
1446 check_host_cpp_condition(){
1447     log check_host_cpp_condition "$@"
1448     header=$1
1449     condition=$2
1450     shift 2
1451     check_host_cpp "$@" <<EOF
1452 #include <$header>
1453 #if !($condition)
1454 #error "unsatisfied condition: $condition"
1455 #endif
1456 EOF
1457 }
1458
1459 cp_if_changed(){
1460     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1461     mkdir -p "$(dirname $2)"
1462     cp -f "$1" "$2"
1463 }
1464
1465 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1466 # system-dependent things.
1467
1468 AVCODEC_COMPONENTS="
1469     bsfs
1470     decoders
1471     encoders
1472     hwaccels
1473     parsers
1474 "
1475
1476 AVDEVICE_COMPONENTS="
1477     indevs
1478     outdevs
1479 "
1480
1481 AVFILTER_COMPONENTS="
1482     filters
1483 "
1484
1485 AVFORMAT_COMPONENTS="
1486     demuxers
1487     muxers
1488     protocols
1489 "
1490
1491 AVRESAMPLE_COMPONENTS=""
1492
1493 AVUTIL_COMPONENTS=""
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500     $AVRESAMPLE_COMPONENTS
1501     $AVUTIL_COMPONENTS
1502 "
1503
1504 EXAMPLE_LIST="
1505     avio_dir_cmd_example
1506     avio_reading_example
1507     decode_audio_example
1508     decode_video_example
1509     demuxing_decoding_example
1510     encode_audio_example
1511     encode_video_example
1512     extract_mvs_example
1513     filter_audio_example
1514     filtering_audio_example
1515     filtering_video_example
1516     http_multiclient_example
1517     hw_decode_example
1518     metadata_example
1519     muxing_example
1520     qsvdec_example
1521     remuxing_example
1522     resampling_audio_example
1523     scaling_video_example
1524     transcode_aac_example
1525     transcoding_example
1526 "
1527
1528 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1529     alsa
1530     appkit
1531     avfoundation
1532     bzlib
1533     coreimage
1534     iconv
1535     jack
1536     libxcb
1537     libxcb_shm
1538     libxcb_shape
1539     libxcb_xfixes
1540     lzma
1541     schannel
1542     sdl2
1543     securetransport
1544     sndio
1545     xlib
1546     zlib
1547 "
1548
1549 EXTERNAL_LIBRARY_GPL_LIST="
1550     avisynth
1551     frei0r
1552     libcdio
1553     librubberband
1554     libvidstab
1555     libx264
1556     libx265
1557     libxavs
1558     libxvid
1559 "
1560
1561 EXTERNAL_LIBRARY_NONFREE_LIST="
1562     decklink
1563     libndi_newtek
1564     libfdk_aac
1565     openssl
1566 "
1567
1568 EXTERNAL_LIBRARY_VERSION3_LIST="
1569     gmp
1570     libopencore_amrnb
1571     libopencore_amrwb
1572     libvo_amrwbenc
1573     rkmpp
1574 "
1575
1576 EXTERNAL_LIBRARY_GPLV3_LIST="
1577     libsmbclient
1578 "
1579
1580 EXTERNAL_LIBRARY_LIST="
1581     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1582     $EXTERNAL_LIBRARY_GPL_LIST
1583     $EXTERNAL_LIBRARY_NONFREE_LIST
1584     $EXTERNAL_LIBRARY_VERSION3_LIST
1585     $EXTERNAL_LIBRARY_GPLV3_LIST
1586     chromaprint
1587     gcrypt
1588     gnutls
1589     jni
1590     ladspa
1591     libass
1592     libbluray
1593     libbs2b
1594     libcaca
1595     libcelt
1596     libdc1394
1597     libdrm
1598     libflite
1599     libfontconfig
1600     libfreetype
1601     libfribidi
1602     libgme
1603     libgsm
1604     libiec61883
1605     libilbc
1606     libkvazaar
1607     libmodplug
1608     libmp3lame
1609     libmysofa
1610     libopencv
1611     libopenh264
1612     libopenjpeg
1613     libopenmpt
1614     libopus
1615     libpulse
1616     librsvg
1617     librtmp
1618     libshine
1619     libsmbclient
1620     libsnappy
1621     libsoxr
1622     libspeex
1623     libssh
1624     libtesseract
1625     libtheora
1626     libtwolame
1627     libv4l2
1628     libvmaf
1629     libvorbis
1630     libvpx
1631     libwavpack
1632     libwebp
1633     libxml2
1634     libzimg
1635     libzmq
1636     libzvbi
1637     mediacodec
1638     openal
1639     opencl
1640     opengl
1641 "
1642
1643 HWACCEL_AUTODETECT_LIBRARY_LIST="
1644     audiotoolbox
1645     crystalhd
1646     cuda
1647     cuvid
1648     d3d11va
1649     dxva2
1650     nvenc
1651     vaapi
1652     vda
1653     vdpau
1654     videotoolbox
1655     v4l2_m2m
1656     xvmc
1657 "
1658
1659 HWACCEL_LIBRARY_NONFREE_LIST="
1660     cuda_sdk
1661     libnpp
1662 "
1663
1664 HWACCEL_LIBRARY_LIST="
1665     $HWACCEL_AUTODETECT_LIBRARY_LIST
1666     $HWACCEL_LIBRARY_NONFREE_LIST
1667     libmfx
1668     mmal
1669     omx
1670 "
1671
1672 DOCUMENT_LIST="
1673     doc
1674     htmlpages
1675     manpages
1676     podpages
1677     txtpages
1678 "
1679
1680 FEATURE_LIST="
1681     ftrapv
1682     gray
1683     hardcoded_tables
1684     omx_rpi
1685     runtime_cpudetect
1686     safe_bitstream_reader
1687     shared
1688     small
1689     static
1690     swscale_alpha
1691 "
1692
1693 LIBRARY_LIST="
1694     avcodec
1695     avdevice
1696     avfilter
1697     avformat
1698     avresample
1699     avutil
1700     postproc
1701     swresample
1702     swscale
1703 "
1704
1705 LICENSE_LIST="
1706     gpl
1707     nonfree
1708     version3
1709 "
1710
1711 PROGRAM_LIST="
1712     ffplay
1713     ffprobe
1714     ffserver
1715     ffmpeg
1716 "
1717
1718 SUBSYSTEM_LIST="
1719     dct
1720     dwt
1721     error_resilience
1722     faan
1723     fast_unaligned
1724     fft
1725     lsp
1726     lzo
1727     mdct
1728     pixelutils
1729     network
1730     rdft
1731 "
1732
1733 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1734 CONFIG_LIST="
1735     $DOCUMENT_LIST
1736     $EXAMPLE_LIST
1737     $EXTERNAL_LIBRARY_LIST
1738     $HWACCEL_LIBRARY_LIST
1739     $FEATURE_LIST
1740     $LICENSE_LIST
1741     $LIBRARY_LIST
1742     $PROGRAM_LIST
1743     $SUBSYSTEM_LIST
1744     autodetect
1745     fontconfig
1746     linux_perf
1747     memory_poisoning
1748     neon_clobber_test
1749     ossfuzz
1750     pic
1751     thumb
1752     valgrind_backtrace
1753     xmm_clobber_test
1754     $COMPONENT_LIST
1755 "
1756
1757 THREADS_LIST="
1758     pthreads
1759     os2threads
1760     w32threads
1761 "
1762
1763 ATOMICS_LIST="
1764     atomics_gcc
1765     atomics_suncc
1766     atomics_win32
1767 "
1768
1769 AUTODETECT_LIBS="
1770     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1771     $HWACCEL_AUTODETECT_LIBRARY_LIST
1772     $THREADS_LIST
1773 "
1774
1775 ARCH_LIST="
1776     aarch64
1777     alpha
1778     arm
1779     avr32
1780     avr32_ap
1781     avr32_uc
1782     bfin
1783     ia64
1784     m68k
1785     mips
1786     mips64
1787     parisc
1788     ppc
1789     ppc64
1790     s390
1791     sh4
1792     sparc
1793     sparc64
1794     tilegx
1795     tilepro
1796     tomi
1797     x86
1798     x86_32
1799     x86_64
1800 "
1801
1802 ARCH_EXT_LIST_ARM="
1803     armv5te
1804     armv6
1805     armv6t2
1806     armv8
1807     neon
1808     vfp
1809     vfpv3
1810     setend
1811 "
1812
1813 ARCH_EXT_LIST_MIPS="
1814     mipsfpu
1815     mips32r2
1816     mips32r5
1817     mips64r2
1818     mips32r6
1819     mips64r6
1820     mipsdsp
1821     mipsdspr2
1822     msa
1823 "
1824
1825 ARCH_EXT_LIST_LOONGSON="
1826     loongson2
1827     loongson3
1828     mmi
1829 "
1830
1831 ARCH_EXT_LIST_X86_SIMD="
1832     aesni
1833     amd3dnow
1834     amd3dnowext
1835     avx
1836     avx2
1837     fma3
1838     fma4
1839     mmx
1840     mmxext
1841     sse
1842     sse2
1843     sse3
1844     sse4
1845     sse42
1846     ssse3
1847     xop
1848 "
1849
1850 ARCH_EXT_LIST_PPC="
1851     altivec
1852     dcbzl
1853     ldbrx
1854     power8
1855     ppc4xx
1856     vsx
1857 "
1858
1859 ARCH_EXT_LIST_X86="
1860     $ARCH_EXT_LIST_X86_SIMD
1861     cpunop
1862     i686
1863 "
1864
1865 ARCH_EXT_LIST="
1866     $ARCH_EXT_LIST_ARM
1867     $ARCH_EXT_LIST_PPC
1868     $ARCH_EXT_LIST_X86
1869     $ARCH_EXT_LIST_MIPS
1870     $ARCH_EXT_LIST_LOONGSON
1871 "
1872
1873 ARCH_FEATURES="
1874     aligned_stack
1875     fast_64bit
1876     fast_clz
1877     fast_cmov
1878     local_aligned_8
1879     local_aligned_16
1880     local_aligned_32
1881     simd_align_16
1882     simd_align_32
1883 "
1884
1885 BUILTIN_LIST="
1886     atomic_cas_ptr
1887     machine_rw_barrier
1888     MemoryBarrier
1889     mm_empty
1890     rdtsc
1891     sarestart
1892     sem_timedwait
1893     sync_val_compare_and_swap
1894 "
1895 HAVE_LIST_CMDLINE="
1896     inline_asm
1897     symver
1898     x86asm
1899 "
1900
1901 HAVE_LIST_PUB="
1902     bigendian
1903     fast_unaligned
1904 "
1905
1906 HEADERS_LIST="
1907     altivec_h
1908     arpa_inet_h
1909     asm_types_h
1910     cdio_paranoia_h
1911     cdio_paranoia_paranoia_h
1912     cuda_h
1913     d3d11_h
1914     dispatch_dispatch_h
1915     dev_bktr_ioctl_bt848_h
1916     dev_bktr_ioctl_meteor_h
1917     dev_ic_bt8xx_h
1918     dev_video_bktr_ioctl_bt848_h
1919     dev_video_meteor_ioctl_meteor_h
1920     direct_h
1921     dirent_h
1922     dlfcn_h
1923     dxgidebug_h
1924     dxva_h
1925     ES2_gl_h
1926     gsm_h
1927     io_h
1928     mach_mach_time_h
1929     machine_ioctl_bt848_h
1930     machine_ioctl_meteor_h
1931     malloc_h
1932     opencv2_core_core_c_h
1933     openjpeg_2_3_openjpeg_h
1934     openjpeg_2_2_openjpeg_h
1935     openjpeg_2_1_openjpeg_h
1936     openjpeg_2_0_openjpeg_h
1937     openjpeg_1_5_openjpeg_h
1938     OpenGL_gl3_h
1939     poll_h
1940     soundcard_h
1941     stdatomic_h
1942     sys_mman_h
1943     sys_param_h
1944     sys_resource_h
1945     sys_select_h
1946     sys_soundcard_h
1947     sys_time_h
1948     sys_un_h
1949     sys_videoio_h
1950     termios_h
1951     udplite_h
1952     unistd_h
1953     valgrind_valgrind_h
1954     windows_h
1955     winsock2_h
1956 "
1957
1958 INTRINSICS_LIST="
1959     intrinsics_neon
1960 "
1961
1962 COMPLEX_FUNCS="
1963     cabs
1964     cexp
1965 "
1966
1967 MATH_FUNCS="
1968     atanf
1969     atan2f
1970     cbrt
1971     cbrtf
1972     copysign
1973     cosf
1974     erf
1975     exp2
1976     exp2f
1977     expf
1978     hypot
1979     isfinite
1980     isinf
1981     isnan
1982     ldexpf
1983     llrint
1984     llrintf
1985     log2
1986     log2f
1987     log10f
1988     lrint
1989     lrintf
1990     powf
1991     rint
1992     round
1993     roundf
1994     sinf
1995     trunc
1996     truncf
1997 "
1998
1999 SYSTEM_FUNCS="
2000     access
2001     aligned_malloc
2002     arc4random
2003     clock_gettime
2004     closesocket
2005     CommandLineToArgvW
2006     CoTaskMemFree
2007     CryptGenRandom
2008     fcntl
2009     flt_lim
2010     fork
2011     getaddrinfo
2012     gethrtime
2013     getopt
2014     GetProcessAffinityMask
2015     GetProcessMemoryInfo
2016     GetProcessTimes
2017     getrusage
2018     GetSystemTimeAsFileTime
2019     gettimeofday
2020     glob
2021     glXGetProcAddress
2022     gmtime_r
2023     inet_aton
2024     isatty
2025     jack_port_get_latency_range
2026     kbhit
2027     LoadLibrary
2028     localtime_r
2029     lstat
2030     lzo1x_999_compress
2031     mach_absolute_time
2032     MapViewOfFile
2033     memalign
2034     mkstemp
2035     mmap
2036     mprotect
2037     nanosleep
2038     PeekNamedPipe
2039     posix_memalign
2040     pthread_cancel
2041     sched_getaffinity
2042     SetConsoleTextAttribute
2043     SetConsoleCtrlHandler
2044     setmode
2045     setrlimit
2046     Sleep
2047     strerror_r
2048     sysconf
2049     sysctl
2050     usleep
2051     UTGetOSTypeFromString
2052     VirtualAlloc
2053     wglGetProcAddress
2054 "
2055
2056 TOOLCHAIN_FEATURES="
2057     as_dn_directive
2058     as_fpu_directive
2059     as_func
2060     as_object_arch
2061     asm_mod_q
2062     attribute_may_alias
2063     attribute_packed
2064     blocks_extension
2065     ebp_available
2066     ebx_available
2067     gnu_as
2068     gnu_windres
2069     ibm_asm
2070     inline_asm_direct_symbol_refs
2071     inline_asm_labels
2072     inline_asm_nonlocal_labels
2073     pragma_deprecated
2074     rsync_contimeout
2075     symver_asm_label
2076     symver_gnu_asm
2077     vfp_args
2078     xform_asm
2079     xmm_clobbers
2080 "
2081
2082 TYPES_LIST="
2083     CONDITION_VARIABLE_Ptr
2084     kCMVideoCodecType_HEVC
2085     socklen_t
2086     struct_addrinfo
2087     struct_group_source_req
2088     struct_ip_mreq_source
2089     struct_ipv6_mreq
2090     struct_msghdr_msg_flags
2091     struct_pollfd
2092     struct_rusage_ru_maxrss
2093     struct_sctp_event_subscribe
2094     struct_sockaddr_in6
2095     struct_sockaddr_sa_len
2096     struct_sockaddr_storage
2097     struct_stat_st_mtim_tv_nsec
2098     struct_v4l2_frmivalenum_discrete
2099 "
2100
2101 HAVE_LIST="
2102     $ARCH_EXT_LIST
2103     $(add_suffix _external $ARCH_EXT_LIST)
2104     $(add_suffix _inline   $ARCH_EXT_LIST)
2105     $ARCH_FEATURES
2106     $ATOMICS_LIST
2107     $BUILTIN_LIST
2108     $COMPLEX_FUNCS
2109     $HAVE_LIST_CMDLINE
2110     $HAVE_LIST_PUB
2111     $HEADERS_LIST
2112     $INTRINSICS_LIST
2113     $MATH_FUNCS
2114     $SYSTEM_FUNCS
2115     $THREADS_LIST
2116     $TOOLCHAIN_FEATURES
2117     $TYPES_LIST
2118     atomics_native
2119     dos_paths
2120     libc_msvcrt
2121     makeinfo
2122     makeinfo_html
2123     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2124     perl
2125     pod2man
2126     section_data_rel_ro
2127     texi2html
2128     threads
2129     uwp
2130     vaapi_drm
2131     vaapi_x11
2132     vdpau_x11
2133     winrt
2134 "
2135
2136 # options emitted with CONFIG_ prefix but not available on the command line
2137 CONFIG_EXTRA="
2138     aandcttables
2139     ac3dsp
2140     audio_frame_queue
2141     audiodsp
2142     blockdsp
2143     bswapdsp
2144     cabac
2145     dirac_parse
2146     dvprofile
2147     exif
2148     faandct
2149     faanidct
2150     fdctdsp
2151     flacdsp
2152     fmtconvert
2153     frame_thread_encoder
2154     g722dsp
2155     golomb
2156     gplv3
2157     h263dsp
2158     h264chroma
2159     h264dsp
2160     h264parse
2161     h264pred
2162     h264qpel
2163     hevcparse
2164     hpeldsp
2165     huffman
2166     huffyuvdsp
2167     huffyuvencdsp
2168     idctdsp
2169     iirfilter
2170     mdct15
2171     intrax8
2172     iso_media
2173     ividsp
2174     jpegtables
2175     lgplv3
2176     libx262
2177     llauddsp
2178     llviddsp
2179     llvidencdsp
2180     lpc
2181     lzf
2182     me_cmp
2183     mpeg_er
2184     mpegaudio
2185     mpegaudiodsp
2186     mpegaudioheader
2187     mpegvideo
2188     mpegvideoenc
2189     mss34dsp
2190     pixblockdsp
2191     qpeldsp
2192     qsv
2193     qsvdec
2194     qsvenc
2195     rangecoder
2196     riffdec
2197     riffenc
2198     rtpdec
2199     rtpenc_chain
2200     rv34dsp
2201     sinewin
2202     snappy
2203     srtp
2204     startcode
2205     texturedsp
2206     texturedspenc
2207     tpeldsp
2208     vaapi_1
2209     vaapi_encode
2210     vc1dsp
2211     videodsp
2212     vp3dsp
2213     vp56dsp
2214     vp8dsp
2215     wma_freqs
2216     wmv2dsp
2217 "
2218
2219 CMDLINE_SELECT="
2220     $ARCH_EXT_LIST
2221     $CONFIG_LIST
2222     $HAVE_LIST_CMDLINE
2223     $THREADS_LIST
2224     asm
2225     cross_compile
2226     debug
2227     extra_warnings
2228     logging
2229     lto
2230     optimizations
2231     rpath
2232     stripping
2233 "
2234
2235 PATHS_LIST="
2236     bindir
2237     datadir
2238     docdir
2239     incdir
2240     libdir
2241     mandir
2242     pkgconfigdir
2243     prefix
2244     shlibdir
2245     install_name_dir
2246 "
2247
2248 CMDLINE_SET="
2249     $PATHS_LIST
2250     ar
2251     arch
2252     as
2253     assert_level
2254     build_suffix
2255     cc
2256     objcc
2257     cpu
2258     cross_prefix
2259     custom_allocator
2260     cxx
2261     dep_cc
2262     doxygen
2263     env
2264     extra_version
2265     gas
2266     host_cc
2267     host_cflags
2268     host_extralibs
2269     host_ld
2270     host_ldflags
2271     host_os
2272     ignore_tests
2273     install
2274     ld
2275     ln_s
2276     logfile
2277     malloc_prefix
2278     nm
2279     optflags
2280     nvccflags
2281     pkg_config
2282     pkg_config_flags
2283     progs_suffix
2284     random_seed
2285     ranlib
2286     samples
2287     strip
2288     sws_max_filter_size
2289     sysinclude
2290     sysroot
2291     target_exec
2292     target_os
2293     target_path
2294     target_samples
2295     tempprefix
2296     toolchain
2297     valgrind
2298     x86asmexe
2299 "
2300
2301 CMDLINE_APPEND="
2302     extra_cflags
2303     extra_cxxflags
2304     extra_objcflags
2305     host_cppflags
2306 "
2307
2308 # code dependency declarations
2309
2310 # architecture extensions
2311
2312 armv5te_deps="arm"
2313 armv6_deps="arm"
2314 armv6t2_deps="arm"
2315 armv8_deps="aarch64"
2316 neon_deps_any="aarch64 arm"
2317 intrinsics_neon_deps="neon"
2318 vfp_deps_any="aarch64 arm"
2319 vfpv3_deps="vfp"
2320 setend_deps="arm"
2321
2322 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2323
2324 loongson2_deps="mips"
2325 loongson3_deps="mips"
2326 mipsfpu_deps="mips"
2327 mipsdsp_deps="mips"
2328 mipsdspr2_deps="mips"
2329 mips32r2_deps="mips"
2330 mips32r5_deps="mips"
2331 mips32r6_deps="mips"
2332 mips64r2_deps="mips"
2333 mips64r6_deps="mips"
2334 msa_deps="mipsfpu"
2335 mmi_deps="mips"
2336
2337 altivec_deps="ppc"
2338 dcbzl_deps="ppc"
2339 ldbrx_deps="ppc"
2340 ppc4xx_deps="ppc"
2341 vsx_deps="altivec"
2342 power8_deps="vsx"
2343
2344 cpunop_deps="i686"
2345 x86_64_select="i686"
2346 x86_64_suggest="fast_cmov"
2347
2348 amd3dnow_deps="mmx"
2349 amd3dnowext_deps="amd3dnow"
2350 i686_deps="x86"
2351 mmx_deps="x86"
2352 mmxext_deps="mmx"
2353 sse_deps="mmxext"
2354 sse2_deps="sse"
2355 sse3_deps="sse2"
2356 ssse3_deps="sse3"
2357 sse4_deps="ssse3"
2358 sse42_deps="sse4"
2359 aesni_deps="sse42"
2360 avx_deps="sse42"
2361 xop_deps="avx"
2362 fma3_deps="avx"
2363 fma4_deps="avx"
2364 avx2_deps="avx"
2365
2366 mmx_external_deps="x86asm"
2367 mmx_inline_deps="inline_asm"
2368 mmx_suggest="mmx_external mmx_inline"
2369
2370 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2371     eval dep=\$${ext}_deps
2372     eval ${ext}_external_deps='"${dep}_external"'
2373     eval ${ext}_inline_deps='"${dep}_inline"'
2374     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2375 done
2376
2377 aligned_stack_if_any="aarch64 ppc x86"
2378 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2379 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2380 fast_unaligned_if_any="aarch64 ppc x86"
2381 simd_align_16_if_any="altivec neon sse"
2382 simd_align_32_if_any="avx"
2383
2384 # system capabilities
2385 symver_if_any="symver_asm_label symver_gnu_asm"
2386 valgrind_backtrace_conflict="optimizations"
2387 valgrind_backtrace_deps="valgrind_valgrind_h"
2388
2389 # threading support
2390 atomics_gcc_if="sync_val_compare_and_swap"
2391 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2392 atomics_win32_if="MemoryBarrier"
2393 atomics_native_if_any="$ATOMICS_LIST"
2394 w32threads_deps="atomics_native"
2395 threads_if_any="$THREADS_LIST"
2396
2397 # subsystems
2398 dct_select="rdft"
2399 dirac_parse_select="golomb"
2400 error_resilience_select="me_cmp"
2401 faandct_deps="faan fdctdsp"
2402 faanidct_deps="faan idctdsp"
2403 h264dsp_select="startcode"
2404 hevcparse_select="golomb"
2405 frame_thread_encoder_deps="encoders threads"
2406 intrax8_select="blockdsp idctdsp"
2407 mdct_select="fft"
2408 mdct15_select="fft"
2409 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2410 mpeg_er_select="error_resilience"
2411 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2412 mpegaudiodsp_select="dct"
2413 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2414 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2415 vc1dsp_select="h264chroma qpeldsp startcode"
2416 rdft_select="fft"
2417
2418 # decoders / encoders
2419 aac_decoder_select="mdct15 mdct sinewin"
2420 aac_fixed_decoder_select="mdct sinewin"
2421 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2422 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2423 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2424 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2425 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2426 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2427 adpcm_g722_decoder_select="g722dsp"
2428 adpcm_g722_encoder_select="g722dsp"
2429 aic_decoder_select="golomb idctdsp"
2430 alac_encoder_select="lpc"
2431 als_decoder_select="bswapdsp"
2432 amrnb_decoder_select="lsp"
2433 amrwb_decoder_select="lsp"
2434 amv_decoder_select="sp5x_decoder exif"
2435 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2436 ape_decoder_select="bswapdsp llauddsp"
2437 apng_decoder_select="zlib"
2438 apng_encoder_select="llvidencdsp zlib"
2439 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2440 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2441 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2442 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2443 atrac1_decoder_select="mdct sinewin"
2444 atrac3_decoder_select="mdct"
2445 atrac3p_decoder_select="mdct sinewin"
2446 avrn_decoder_select="exif jpegtables"
2447 bink_decoder_select="blockdsp hpeldsp"
2448 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2449 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2450 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2451 clearvideo_decoder_select="idctdsp"
2452 cllc_decoder_select="bswapdsp"
2453 comfortnoise_encoder_select="lpc"
2454 cook_decoder_select="audiodsp mdct sinewin"
2455 cscd_decoder_select="lzo"
2456 cscd_decoder_suggest="zlib"
2457 dca_decoder_select="mdct"
2458 dds_decoder_select="texturedsp"
2459 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2460 dnxhd_decoder_select="blockdsp idctdsp"
2461 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2462 dolby_e_decoder_select="mdct"
2463 dvvideo_decoder_select="dvprofile idctdsp"
2464 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2465 dxa_decoder_select="zlib"
2466 dxv_decoder_select="lzf texturedsp"
2467 eac3_decoder_select="ac3_decoder"
2468 eac3_encoder_select="ac3_encoder"
2469 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2470 eatgq_decoder_select="aandcttables"
2471 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2472 exr_decoder_select="zlib"
2473 ffv1_decoder_select="rangecoder"
2474 ffv1_encoder_select="rangecoder"
2475 ffvhuff_decoder_select="huffyuv_decoder"
2476 ffvhuff_encoder_select="huffyuv_encoder"
2477 fic_decoder_select="golomb"
2478 flac_decoder_select="flacdsp"
2479 flac_encoder_select="bswapdsp flacdsp lpc"
2480 flashsv2_decoder_select="zlib"
2481 flashsv2_encoder_select="zlib"
2482 flashsv_decoder_select="zlib"
2483 flashsv_encoder_select="zlib"
2484 flv_decoder_select="h263_decoder"
2485 flv_encoder_select="h263_encoder"
2486 fourxm_decoder_select="blockdsp bswapdsp"
2487 fraps_decoder_select="bswapdsp huffman"
2488 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2489 g729_decoder_select="audiodsp"
2490 h261_decoder_select="mpegvideo"
2491 h261_encoder_select="aandcttables mpegvideoenc"
2492 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2493 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2494 h263i_decoder_select="h263_decoder"
2495 h263p_decoder_select="h263_decoder"
2496 h263p_encoder_select="h263_encoder"
2497 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2498 h264_decoder_suggest="error_resilience"
2499 hap_decoder_select="snappy texturedsp"
2500 hap_encoder_deps="libsnappy"
2501 hap_encoder_select="texturedspenc"
2502 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2503 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2504 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2505 iac_decoder_select="imc_decoder"
2506 imc_decoder_select="bswapdsp fft mdct sinewin"
2507 indeo3_decoder_select="hpeldsp"
2508 indeo4_decoder_select="ividsp"
2509 indeo5_decoder_select="ividsp"
2510 interplay_video_decoder_select="hpeldsp"
2511 jpegls_decoder_select="mjpeg_decoder"
2512 jv_decoder_select="blockdsp"
2513 lagarith_decoder_select="llviddsp"
2514 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2515 magicyuv_decoder_select="llviddsp"
2516 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2517 metasound_decoder_select="lsp mdct sinewin"
2518 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2519 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2520 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2521 mjpegb_decoder_select="mjpeg_decoder"
2522 mlp_decoder_select="mlp_parser"
2523 mlp_encoder_select="lpc"
2524 motionpixels_decoder_select="bswapdsp"
2525 mp1_decoder_select="mpegaudio"
2526 mp1float_decoder_select="mpegaudio"
2527 mp2_decoder_select="mpegaudio"
2528 mp2float_decoder_select="mpegaudio"
2529 mp3_decoder_select="mpegaudio"
2530 mp3adu_decoder_select="mpegaudio"
2531 mp3adufloat_decoder_select="mpegaudio"
2532 mp3float_decoder_select="mpegaudio"
2533 mp3on4_decoder_select="mpegaudio"
2534 mp3on4float_decoder_select="mpegaudio"
2535 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2536 mpc8_decoder_select="mpegaudiodsp"
2537 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2538 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2539 mpegvideo_decoder_select="mpegvideo"
2540 mpeg1video_decoder_select="mpegvideo"
2541 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2542 mpeg2video_decoder_select="mpegvideo"
2543 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2544 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2545 mpeg4_encoder_select="h263_encoder"
2546 msa1_decoder_select="mss34dsp"
2547 mscc_decoder_select="zlib"
2548 msmpeg4v1_decoder_select="h263_decoder"
2549 msmpeg4v2_decoder_select="h263_decoder"
2550 msmpeg4v2_encoder_select="h263_encoder"
2551 msmpeg4v3_decoder_select="h263_decoder"
2552 msmpeg4v3_encoder_select="h263_encoder"
2553 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2554 mts2_decoder_select="mss34dsp"
2555 mxpeg_decoder_select="mjpeg_decoder"
2556 nellymoser_decoder_select="mdct sinewin"
2557 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2558 nuv_decoder_select="idctdsp lzo"
2559 on2avc_decoder_select="mdct"
2560 opus_decoder_deps="swresample"
2561 opus_decoder_select="mdct15"
2562 opus_encoder_select="audio_frame_queue mdct15"
2563 png_decoder_select="zlib"
2564 png_encoder_select="llvidencdsp zlib"
2565 prores_decoder_select="blockdsp idctdsp"
2566 prores_encoder_select="fdctdsp"
2567 qcelp_decoder_select="lsp"
2568 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2569 ra_144_decoder_select="audiodsp"
2570 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2571 ralf_decoder_select="golomb"
2572 rawvideo_decoder_select="bswapdsp"
2573 rscc_decoder_select="zlib"
2574 rtjpeg_decoder_select="me_cmp"
2575 rv10_decoder_select="h263_decoder"
2576 rv10_encoder_select="h263_encoder"
2577 rv20_decoder_select="h263_decoder"
2578 rv20_encoder_select="h263_encoder"
2579 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2580 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2581 screenpresso_decoder_select="zlib"
2582 shorten_decoder_select="bswapdsp"
2583 sipr_decoder_select="lsp"
2584 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2585 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2586 sonic_decoder_select="golomb rangecoder"
2587 sonic_encoder_select="golomb rangecoder"
2588 sonic_ls_encoder_select="golomb rangecoder"
2589 sp5x_decoder_select="mjpeg_decoder"
2590 srgc_decoder_select="zlib"
2591 svq1_decoder_select="hpeldsp"
2592 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2593 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2594 svq3_decoder_suggest="zlib"
2595 tak_decoder_select="audiodsp"
2596 tdsc_decoder_select="zlib mjpeg_decoder"
2597 theora_decoder_select="vp3_decoder"
2598 thp_decoder_select="mjpeg_decoder"
2599 tiff_decoder_suggest="zlib lzma"
2600 tiff_encoder_suggest="zlib"
2601 truehd_decoder_select="mlp_parser"
2602 truehd_encoder_select="lpc"
2603 truemotion2_decoder_select="bswapdsp"
2604 truespeech_decoder_select="bswapdsp"
2605 tscc_decoder_select="zlib"
2606 twinvq_decoder_select="mdct lsp sinewin"
2607 txd_decoder_select="texturedsp"
2608 utvideo_decoder_select="bswapdsp llviddsp"
2609 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2610 vble_decoder_select="llviddsp"
2611 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2612 vc1_qsv_decoder_deps="libmfx"
2613 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2614 vc1image_decoder_select="vc1_decoder"
2615 vorbis_decoder_select="mdct"
2616 vorbis_encoder_select="mdct"
2617 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2618 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2619 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2620 vp6a_decoder_select="vp6_decoder"
2621 vp6f_decoder_select="vp6_decoder"
2622 vp7_decoder_select="h264pred videodsp vp8dsp"
2623 vp8_decoder_select="h264pred videodsp vp8dsp"
2624 vp9_decoder_select="videodsp vp9_parser"
2625 webp_decoder_select="vp8_decoder exif"
2626 wmalossless_decoder_select="llauddsp"
2627 wmapro_decoder_select="mdct sinewin wma_freqs"
2628 wmav1_decoder_select="mdct sinewin wma_freqs"
2629 wmav1_encoder_select="mdct sinewin wma_freqs"
2630 wmav2_decoder_select="mdct sinewin wma_freqs"
2631 wmav2_encoder_select="mdct sinewin wma_freqs"
2632 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2633 wmv1_decoder_select="h263_decoder"
2634 wmv1_encoder_select="h263_encoder"
2635 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2636 wmv2_encoder_select="h263_encoder wmv2dsp"
2637 wmv3_decoder_select="vc1_decoder"
2638 wmv3image_decoder_select="wmv3_decoder"
2639 xma1_decoder_select="wmapro_decoder"
2640 xma2_decoder_select="wmapro_decoder"
2641 zerocodec_decoder_select="zlib"
2642 zlib_decoder_select="zlib"
2643 zlib_encoder_select="zlib"
2644 zmbv_decoder_select="zlib"
2645 zmbv_encoder_select="zlib"
2646
2647 # hardware accelerators
2648 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2649 cuda_deps_any="libdl LoadLibrary"
2650 cuvid_deps="cuda"
2651 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2652 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2653 dxva2_extralibs="-luser32"
2654 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2655 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2656 vda_deps="vda_framework pthreads"
2657 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2658 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2659 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2660 xvmc_deps="X11_extensions_XvMClib_h"
2661
2662 h263_vaapi_hwaccel_deps="vaapi"
2663 h263_vaapi_hwaccel_select="h263_decoder"
2664 h263_videotoolbox_hwaccel_deps="videotoolbox"
2665 h263_videotoolbox_hwaccel_select="h263_decoder"
2666 h264_cuvid_hwaccel_deps="cuda cuvid"
2667 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2668 h264_d3d11va_hwaccel_deps="d3d11va"
2669 h264_d3d11va_hwaccel_select="h264_decoder"
2670 h264_d3d11va2_hwaccel_deps="d3d11va"
2671 h264_d3d11va2_hwaccel_select="h264_decoder"
2672 h264_dxva2_hwaccel_deps="dxva2"
2673 h264_dxva2_hwaccel_select="h264_decoder"
2674 h264_mediacodec_hwaccel_deps="mediacodec"
2675 h264_mmal_hwaccel_deps="mmal"
2676 h264_qsv_hwaccel_deps="libmfx"
2677 h264_vaapi_hwaccel_deps="vaapi"
2678 h264_vaapi_hwaccel_select="h264_decoder"
2679 h264_vda_hwaccel_deps="vda"
2680 h264_vda_hwaccel_select="h264_decoder"
2681 h264_vda_old_hwaccel_deps="vda"
2682 h264_vda_old_hwaccel_select="h264_decoder"
2683 h264_vdpau_hwaccel_deps="vdpau"
2684 h264_vdpau_hwaccel_select="h264_decoder"
2685 h264_videotoolbox_hwaccel_deps="videotoolbox"
2686 h264_videotoolbox_hwaccel_select="h264_decoder"
2687 hevc_cuvid_hwaccel_deps="cuda cuvid"
2688 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2689 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2690 hevc_d3d11va_hwaccel_select="hevc_decoder"
2691 hevc_mediacodec_hwaccel_deps="mediacodec"
2692 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2693 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2694 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2695 hevc_dxva2_hwaccel_select="hevc_decoder"
2696 hevc_qsv_hwaccel_deps="libmfx"
2697 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2698 hevc_vaapi_hwaccel_select="hevc_decoder"
2699 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2700 hevc_vdpau_hwaccel_select="hevc_decoder"
2701 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2702 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2703 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2704 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2705 mpeg_xvmc_hwaccel_deps="xvmc"
2706 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2707 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2708 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2709 mpeg1_vdpau_hwaccel_deps="vdpau"
2710 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2711 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2712 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2713 mpeg1_xvmc_hwaccel_deps="xvmc"
2714 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2715 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2716 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2717 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2718 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2719 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2720 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2721 mpeg2_dxva2_hwaccel_deps="dxva2"
2722 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2724 mpeg2_mmal_hwaccel_deps="mmal"
2725 mpeg2_qsv_hwaccel_deps="libmfx"
2726 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2727 mpeg2_vaapi_hwaccel_deps="vaapi"
2728 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_vdpau_hwaccel_deps="vdpau"
2730 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2732 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2733 mpeg2_xvmc_hwaccel_deps="xvmc"
2734 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2735 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2736 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2737 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2738 mpeg4_mmal_hwaccel_deps="mmal"
2739 mpeg4_vaapi_hwaccel_deps="vaapi"
2740 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2741 mpeg4_vdpau_hwaccel_deps="vdpau"
2742 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2743 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2744 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2745 vc1_cuvid_hwaccel_deps="cuda cuvid"
2746 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2747 vc1_d3d11va_hwaccel_deps="d3d11va"
2748 vc1_d3d11va_hwaccel_select="vc1_decoder"
2749 vc1_d3d11va2_hwaccel_deps="d3d11va"
2750 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2751 vc1_dxva2_hwaccel_deps="dxva2"
2752 vc1_dxva2_hwaccel_select="vc1_decoder"
2753 vc1_mmal_hwaccel_deps="mmal"
2754 vc1_qsv_hwaccel_deps="libmfx"
2755 vc1_qsv_hwaccel_select="qsvdec_vc1"
2756 vc1_vaapi_hwaccel_deps="vaapi"
2757 vc1_vaapi_hwaccel_select="vc1_decoder"
2758 vc1_vdpau_hwaccel_deps="vdpau"
2759 vc1_vdpau_hwaccel_select="vc1_decoder"
2760 vp8_cuvid_hwaccel_deps="cuda cuvid"
2761 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2762 vp9_cuvid_hwaccel_deps="cuda cuvid"
2763 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2764 vp8_mediacodec_hwaccel_deps="mediacodec"
2765 vp8_qsv_hwaccel_deps="libmfx"
2766 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2767 vp9_d3d11va_hwaccel_select="vp9_decoder"
2768 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2769 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2770 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2771 vp9_dxva2_hwaccel_select="vp9_decoder"
2772 vp9_mediacodec_hwaccel_deps="mediacodec"
2773 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2774 vp9_vaapi_hwaccel_select="vp9_decoder"
2775 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2776 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2777 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2778 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2779 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2780
2781 # hardware-accelerated codecs
2782 omx_deps="libdl pthreads"
2783 omx_rpi_select="omx"
2784 qsvdec_select="qsv"
2785 qsvenc_select="qsv"
2786 vaapi_encode_deps="vaapi"
2787 v4l2_m2m_deps_any="linux_videodev2_h"
2788
2789 hwupload_cuda_filter_deps="cuda"
2790 scale_npp_filter_deps="cuda libnpp"
2791 scale_cuda_filter_deps="cuda_sdk"
2792 thumbnail_cuda_filter_deps="cuda_sdk"
2793
2794 nvenc_deps="cuda"
2795 nvenc_deps_any="libdl LoadLibrary"
2796 nvenc_encoder_deps="nvenc"
2797
2798 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2799 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2800 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2801 h264_cuvid_decoder_deps="cuda cuvid"
2802 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2803 h264_mediacodec_decoder_deps="mediacodec"
2804 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2805 h264_mmal_decoder_deps="mmal"
2806 h264_nvenc_encoder_deps="nvenc"
2807 h264_omx_encoder_deps="omx"
2808 h264_qsv_decoder_deps="libmfx"
2809 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2810 h264_qsv_encoder_deps="libmfx"
2811 h264_qsv_encoder_select="qsvenc"
2812 h264_rkmpp_decoder_deps="rkmpp"
2813 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2814 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2815 h264_vaapi_encoder_select="vaapi_encode golomb"
2816 h264_vda_decoder_deps="vda"
2817 h264_vda_decoder_select="h264_decoder"
2818 h264_vdpau_decoder_deps="vdpau"
2819 h264_vdpau_decoder_select="h264_decoder"
2820 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2821 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2822 hevc_cuvid_decoder_deps="cuda cuvid"
2823 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2824 hevc_mediacodec_decoder_deps="mediacodec"
2825 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2826 hevc_nvenc_encoder_deps="nvenc"
2827 hevc_qsv_decoder_deps="libmfx"
2828 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2829 hevc_qsv_encoder_deps="libmfx"
2830 hevc_qsv_encoder_select="hevcparse qsvenc"
2831 hevc_rkmpp_decoder_deps="rkmpp"
2832 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2833 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2834 hevc_vaapi_encoder_select="vaapi_encode golomb"
2835 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2836 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2837 mjpeg_cuvid_decoder_deps="cuda cuvid"
2838 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2839 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2840 mpeg1_cuvid_decoder_deps="cuda cuvid"
2841 mpeg1_vdpau_decoder_deps="vdpau"
2842 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2843 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2844 mpeg2_crystalhd_decoder_select="crystalhd"
2845 mpeg2_cuvid_decoder_deps="cuda cuvid"
2846 mpeg2_mmal_decoder_deps="mmal"
2847 mpeg2_mediacodec_decoder_deps="mediacodec"
2848 mpeg2_qsv_decoder_deps="libmfx"
2849 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2850 mpeg2_qsv_encoder_deps="libmfx"
2851 mpeg2_qsv_encoder_select="qsvenc"
2852 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2853 mpeg2_vaapi_encoder_select="vaapi_encode"
2854 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2855 mpeg4_crystalhd_decoder_select="crystalhd"
2856 mpeg4_cuvid_decoder_deps="cuda cuvid"
2857 mpeg4_mediacodec_decoder_deps="mediacodec"
2858 mpeg4_mmal_decoder_deps="mmal"
2859 mpeg4_omx_encoder_deps="omx"
2860 mpeg4_vdpau_decoder_deps="vdpau"
2861 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2862 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2863 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2864 mpeg_vdpau_decoder_deps="vdpau"
2865 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2866 msmpeg4_crystalhd_decoder_select="crystalhd"
2867 nvenc_h264_encoder_select="h264_nvenc_encoder"
2868 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2869 vc1_crystalhd_decoder_select="crystalhd"
2870 vc1_cuvid_decoder_deps="cuda cuvid"
2871 vc1_mmal_decoder_deps="mmal"
2872 vc1_vdpau_decoder_deps="vdpau"
2873 vc1_vdpau_decoder_select="vc1_decoder"
2874 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2875 vp8_cuvid_decoder_deps="cuda cuvid"
2876 vp8_mediacodec_decoder_deps="mediacodec"
2877 vp8_qsv_decoder_deps="libmfx"
2878 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2879 vp8_rkmpp_decoder_deps="rkmpp"
2880 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2881 vp8_vaapi_encoder_select="vaapi_encode"
2882 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2883 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2884 vp9_cuvid_decoder_deps="cuda cuvid"
2885 vp9_mediacodec_decoder_deps="mediacodec"
2886 vp9_rkmpp_decoder_deps="rkmpp"
2887 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2888 vp9_vaapi_encoder_select="vaapi_encode"
2889 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2890 wmv3_crystalhd_decoder_select="crystalhd"
2891 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2892
2893 # parsers
2894 h264_parser_select="golomb h264dsp h264parse"
2895 hevc_parser_select="hevcparse"
2896 mpegaudio_parser_select="mpegaudioheader"
2897 mpegvideo_parser_select="mpegvideo"
2898 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2899 vc1_parser_select="vc1dsp"
2900
2901 # bitstream_filters
2902 mjpeg2jpeg_bsf_select="jpegtables"
2903
2904 # external libraries
2905 aac_at_decoder_deps="audiotoolbox"
2906 ac3_at_decoder_deps="audiotoolbox"
2907 ac3_at_decoder_select="ac3_parser"
2908 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2909 alac_at_decoder_deps="audiotoolbox"
2910 amr_nb_at_decoder_deps="audiotoolbox"
2911 avisynth_deps_any="libdl LoadLibrary"
2912 avisynth_demuxer_deps="avisynth"
2913 avisynth_demuxer_select="riffdec"
2914 eac3_at_decoder_deps="audiotoolbox"
2915 eac3_at_decoder_select="ac3_parser"
2916 gsm_ms_at_decoder_deps="audiotoolbox"
2917 ilbc_at_decoder_deps="audiotoolbox"
2918 mp1_at_decoder_deps="audiotoolbox"
2919 mp2_at_decoder_deps="audiotoolbox"
2920 mp3_at_decoder_deps="audiotoolbox"
2921 mp1_at_decoder_select="mpegaudioheader"
2922 mp2_at_decoder_select="mpegaudioheader"
2923 mp3_at_decoder_select="mpegaudioheader"
2924 pcm_alaw_at_decoder_deps="audiotoolbox"
2925 pcm_mulaw_at_decoder_deps="audiotoolbox"
2926 qdmc_at_decoder_deps="audiotoolbox"
2927 qdm2_at_decoder_deps="audiotoolbox"
2928 aac_at_encoder_deps="audiotoolbox"
2929 aac_at_encoder_select="audio_frame_queue"
2930 alac_at_encoder_deps="audiotoolbox"
2931 alac_at_encoder_select="audio_frame_queue"
2932 ilbc_at_encoder_deps="audiotoolbox"
2933 ilbc_at_encoder_select="audio_frame_queue"
2934 pcm_alaw_at_encoder_deps="audiotoolbox"
2935 pcm_alaw_at_encoder_select="audio_frame_queue"
2936 pcm_mulaw_at_encoder_deps="audiotoolbox"
2937 pcm_mulaw_at_encoder_select="audio_frame_queue"
2938 chromaprint_muxer_deps="chromaprint"
2939 h264_videotoolbox_encoder_deps="pthreads"
2940 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2941 libcelt_decoder_deps="libcelt"
2942 libfdk_aac_decoder_deps="libfdk_aac"
2943 libfdk_aac_encoder_deps="libfdk_aac"
2944 libfdk_aac_encoder_select="audio_frame_queue"
2945 libgme_demuxer_deps="libgme"
2946 libgsm_decoder_deps="libgsm"
2947 libgsm_encoder_deps="libgsm"
2948 libgsm_ms_decoder_deps="libgsm"
2949 libgsm_ms_encoder_deps="libgsm"
2950 libilbc_decoder_deps="libilbc"
2951 libilbc_encoder_deps="libilbc"
2952 libkvazaar_encoder_deps="libkvazaar"
2953 libmodplug_demuxer_deps="libmodplug"
2954 libmp3lame_encoder_deps="libmp3lame"
2955 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2956 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2957 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2958 libopencore_amrnb_encoder_select="audio_frame_queue"
2959 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2960 libopenh264_decoder_deps="libopenh264"
2961 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2962 libopenh264_encoder_deps="libopenh264"
2963 libopenjpeg_decoder_deps="libopenjpeg"
2964 libopenjpeg_encoder_deps="libopenjpeg"
2965 libopenmpt_demuxer_deps="libopenmpt"
2966 libopus_decoder_deps="libopus"
2967 libopus_encoder_deps="libopus"
2968 libopus_encoder_select="audio_frame_queue"
2969 librsvg_decoder_deps="librsvg"
2970 libshine_encoder_deps="libshine"
2971 libshine_encoder_select="audio_frame_queue"
2972 libspeex_decoder_deps="libspeex"
2973 libspeex_encoder_deps="libspeex"
2974 libspeex_encoder_select="audio_frame_queue"
2975 libtheora_encoder_deps="libtheora"
2976 libtwolame_encoder_deps="libtwolame"
2977 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2978 libvorbis_decoder_deps="libvorbis"
2979 libvorbis_encoder_deps="libvorbis"
2980 libvorbis_encoder_select="audio_frame_queue"
2981 libvpx_vp8_decoder_deps="libvpx"
2982 libvpx_vp8_encoder_deps="libvpx"
2983 libvpx_vp9_decoder_deps="libvpx"
2984 libvpx_vp9_encoder_deps="libvpx"
2985 libwavpack_encoder_deps="libwavpack"
2986 libwavpack_encoder_select="audio_frame_queue"
2987 libwebp_encoder_deps="libwebp"
2988 libwebp_anim_encoder_deps="libwebp"
2989 libx262_encoder_deps="libx262"
2990 libx264_encoder_deps="libx264"
2991 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2992 libx264rgb_encoder_select="libx264_encoder"
2993 libx265_encoder_deps="libx265"
2994 libxavs_encoder_deps="libxavs"
2995 libxvid_encoder_deps="libxvid"
2996 libzvbi_teletext_decoder_deps="libzvbi"
2997 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2998 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2999 videotoolbox_encoder_suggest="vda_framework"
3000
3001 # demuxers / muxers
3002 ac3_demuxer_select="ac3_parser"
3003 aiff_muxer_select="iso_media"
3004 asf_demuxer_select="riffdec"
3005 asf_o_demuxer_select="riffdec"
3006 asf_muxer_select="riffenc"
3007 asf_stream_muxer_select="asf_muxer"
3008 avi_demuxer_select="iso_media riffdec exif"
3009 avi_muxer_select="riffenc"
3010 caf_demuxer_select="iso_media riffdec"
3011 caf_muxer_select="iso_media"
3012 dash_muxer_select="mp4_muxer"
3013 dash_demuxer_deps="libxml2"
3014 dirac_demuxer_select="dirac_parser"
3015 dts_demuxer_select="dca_parser"
3016 dtshd_demuxer_select="dca_parser"
3017 dv_demuxer_select="dvprofile"
3018 dv_muxer_select="dvprofile"
3019 dxa_demuxer_select="riffdec"
3020 eac3_demuxer_select="ac3_parser"
3021 f4v_muxer_select="mov_muxer"
3022 fifo_muxer_deps="threads"
3023 flac_demuxer_select="flac_parser"
3024 hds_muxer_select="flv_muxer"
3025 hls_muxer_select="mpegts_muxer"
3026 image2_alias_pix_demuxer_select="image2_demuxer"
3027 image2_brender_pix_demuxer_select="image2_demuxer"
3028 ipod_muxer_select="mov_muxer"
3029 ismv_muxer_select="mov_muxer"
3030 matroska_audio_muxer_select="matroska_muxer"
3031 matroska_demuxer_select="iso_media riffdec"
3032 matroska_demuxer_suggest="bzlib lzo zlib"
3033 matroska_muxer_select="iso_media riffenc"
3034 mmf_muxer_select="riffenc"
3035 mov_demuxer_select="iso_media riffdec"
3036 mov_demuxer_suggest="zlib"
3037 mov_muxer_select="iso_media riffenc rtpenc_chain"
3038 mp3_demuxer_select="mpegaudio_parser"
3039 mp3_muxer_select="mpegaudioheader"
3040 mp4_muxer_select="mov_muxer"
3041 mpegts_demuxer_select="iso_media"
3042 mpegts_muxer_select="adts_muxer latm_muxer"
3043 mpegtsraw_demuxer_select="mpegts_demuxer"
3044 mxf_d10_muxer_select="mxf_muxer"
3045 mxf_opatom_muxer_select="mxf_muxer"
3046 nut_muxer_select="riffenc"
3047 nuv_demuxer_select="riffdec"
3048 oga_muxer_select="ogg_muxer"
3049 ogg_demuxer_select="dirac_parse"
3050 ogv_muxer_select="ogg_muxer"
3051 opus_muxer_select="ogg_muxer"
3052 psp_muxer_select="mov_muxer"
3053 rtp_demuxer_select="sdp_demuxer"
3054 rtp_muxer_select="golomb"
3055 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3056 rtsp_demuxer_select="http_protocol rtpdec"
3057 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3058 sap_demuxer_select="sdp_demuxer"
3059 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3060 sdp_demuxer_select="rtpdec"
3061 smoothstreaming_muxer_select="ismv_muxer"
3062 spdif_muxer_select="aac_parser"
3063 spx_muxer_select="ogg_muxer"
3064 swf_demuxer_suggest="zlib"
3065 tak_demuxer_select="tak_parser"
3066 tg2_muxer_select="mov_muxer"
3067 tgp_muxer_select="mov_muxer"
3068 vobsub_demuxer_select="mpegps_demuxer"
3069 w64_demuxer_select="wav_demuxer"
3070 w64_muxer_select="wav_muxer"
3071 wav_demuxer_select="riffdec"
3072 wav_muxer_select="riffenc"
3073 webm_muxer_select="iso_media riffenc"
3074 webm_dash_manifest_demuxer_select="matroska_demuxer"
3075 wtv_demuxer_select="mpegts_demuxer riffdec"
3076 wtv_muxer_select="mpegts_muxer riffenc"
3077 xmv_demuxer_select="riffdec"
3078 xwma_demuxer_select="riffdec"
3079
3080 # indevs / outdevs
3081 alsa_indev_deps="alsa"
3082 alsa_outdev_deps="alsa"
3083 avfoundation_indev_deps="avfoundation pthreads"
3084 avfoundation_indev_extralibs="-framework Foundation -framework CoreVideo -framework CoreMedia"
3085 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3086 caca_outdev_deps="libcaca"
3087 decklink_deps_any="libdl LoadLibrary"
3088 decklink_indev_deps="decklink threads"
3089 decklink_indev_extralibs="-lstdc++"
3090 decklink_outdev_deps="decklink threads"
3091 decklink_outdev_extralibs="-lstdc++"
3092 libndi_newtek_indev_deps="libndi_newtek"
3093 libndi_newtek_indev_extralibs="-lndi"
3094 libndi_newtek_outdev_deps="libndi_newtek"
3095 libndi_newtek_outdev_extralibs="-lndi"
3096 dshow_indev_deps="IBaseFilter"
3097 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3098 fbdev_indev_deps="linux_fb_h"
3099 fbdev_outdev_deps="linux_fb_h"
3100 gdigrab_indev_deps="CreateDIBSection"
3101 gdigrab_indev_extralibs="-lgdi32"
3102 gdigrab_indev_select="bmp_decoder"
3103 iec61883_indev_deps="libiec61883"
3104 jack_indev_deps="jack"
3105 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3106 kmsgrab_indev_deps="libdrm"
3107 lavfi_indev_deps="avfilter"
3108 libcdio_indev_deps="libcdio"
3109 libdc1394_indev_deps="libdc1394"
3110 libv4l2_indev_deps="libv4l2"
3111 openal_indev_deps="openal"
3112 opengl_outdev_deps="opengl"
3113 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3114 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3115 pulse_indev_deps="libpulse"
3116 pulse_outdev_deps="libpulse"
3117 sdl2_outdev_deps="sdl2"
3118 sndio_indev_deps="sndio"
3119 sndio_outdev_deps="sndio"
3120 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3121 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3122 vfwcap_indev_deps="vfw32 vfwcap_defines"
3123 xcbgrab_indev_deps="libxcb"
3124 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3125 xv_outdev_extralibs="-lXv -lX11 -lXext"
3126
3127 # protocols
3128 async_protocol_deps="threads"
3129 bluray_protocol_deps="libbluray"
3130 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3131 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3132 ffrtmpcrypt_protocol_select="tcp_protocol"
3133 ffrtmphttp_protocol_conflict="librtmp_protocol"
3134 ffrtmphttp_protocol_select="http_protocol"
3135 ftp_protocol_select="tcp_protocol"
3136 gopher_protocol_select="network"
3137 http_protocol_select="tcp_protocol"
3138 httpproxy_protocol_select="tcp_protocol"
3139 https_protocol_select="tls_protocol"
3140 icecast_protocol_select="http_protocol"
3141 librtmp_protocol_deps="librtmp"
3142 librtmpe_protocol_deps="librtmp"
3143 librtmps_protocol_deps="librtmp"
3144 librtmpt_protocol_deps="librtmp"
3145 librtmpte_protocol_deps="librtmp"
3146 libsmbclient_protocol_deps="libsmbclient gplv3"
3147 libssh_protocol_deps="libssh"
3148 mmsh_protocol_select="http_protocol"
3149 mmst_protocol_select="network"
3150 rtmp_protocol_conflict="librtmp_protocol"
3151 rtmp_protocol_select="tcp_protocol"
3152 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3153 rtmps_protocol_conflict="librtmp_protocol"
3154 rtmps_protocol_select="tls_protocol"
3155 rtmpt_protocol_select="ffrtmphttp_protocol"
3156 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3157 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3158 rtp_protocol_select="udp_protocol"
3159 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3160 sctp_protocol_select="network"
3161 srtp_protocol_select="rtp_protocol srtp"
3162 tcp_protocol_select="network"
3163 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3164 tls_gnutls_protocol_deps="gnutls"
3165 tls_gnutls_protocol_select="tcp_protocol"
3166 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3167 tls_openssl_protocol_deps="openssl"
3168 tls_openssl_protocol_select="tcp_protocol"
3169 tls_schannel_protocol_deps="schannel"
3170 tls_schannel_protocol_select="tcp_protocol"
3171 tls_securetransport_protocol_deps="securetransport"
3172 tls_securetransport_protocol_select="tcp_protocol"
3173 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3174 udp_protocol_select="network"
3175 udplite_protocol_select="network"
3176 unix_protocol_deps="sys_un_h"
3177 unix_protocol_select="network"
3178
3179 # filters
3180 afftfilt_filter_deps="avcodec"
3181 afftfilt_filter_select="fft"
3182 afir_filter_deps="avcodec"
3183 afir_filter_select="fft"
3184 amovie_filter_deps="avcodec avformat"
3185 aresample_filter_deps="swresample"
3186 ass_filter_deps="libass"
3187 atempo_filter_deps="avcodec"
3188 atempo_filter_select="rdft"
3189 azmq_filter_deps="libzmq"
3190 blackframe_filter_deps="gpl"
3191 boxblur_filter_deps="gpl"
3192 bs2b_filter_deps="libbs2b"
3193 colormatrix_filter_deps="gpl"
3194 coreimage_filter_deps="coreimage appkit"
3195 coreimage_filter_extralibs="-framework OpenGL"
3196 coreimagesrc_filter_deps="coreimage appkit"
3197 coreimagesrc_filter_extralibs="-framework OpenGL"
3198 cover_rect_filter_deps="avcodec avformat gpl"
3199 cropdetect_filter_deps="gpl"
3200 deinterlace_qsv_filter_deps="libmfx"
3201 deinterlace_vaapi_filter_deps="vaapi"
3202 delogo_filter_deps="gpl"
3203 deshake_filter_select="pixelutils"
3204 drawtext_filter_deps="libfreetype"
3205 elbg_filter_deps="avcodec"
3206 eq_filter_deps="gpl"
3207 fftfilt_filter_deps="avcodec"
3208 fftfilt_filter_select="rdft"
3209 find_rect_filter_deps="avcodec avformat gpl"
3210 firequalizer_filter_deps="avcodec"
3211 firequalizer_filter_select="rdft"
3212 flite_filter_deps="libflite"
3213 framerate_filter_select="pixelutils"
3214 frei0r_filter_deps="frei0r libdl"
3215 frei0r_src_filter_deps="frei0r libdl"
3216 fspp_filter_deps="gpl"
3217 geq_filter_deps="gpl"
3218 histeq_filter_deps="gpl"
3219 hqdn3d_filter_deps="gpl"
3220 interlace_filter_deps="gpl"
3221 kerndeint_filter_deps="gpl"
3222 ladspa_filter_deps="ladspa libdl"
3223 mcdeint_filter_deps="avcodec gpl"
3224 movie_filter_deps="avcodec avformat"
3225 mpdecimate_filter_deps="gpl"
3226 mpdecimate_filter_select="pixelutils"
3227 mptestsrc_filter_deps="gpl"
3228 negate_filter_deps="lut_filter"
3229 nnedi_filter_deps="gpl"
3230 ocr_filter_deps="libtesseract"
3231 ocv_filter_deps="libopencv"
3232 owdenoise_filter_deps="gpl"
3233 pan_filter_deps="swresample"
3234 perspective_filter_deps="gpl"
3235 phase_filter_deps="gpl"
3236 pp7_filter_deps="gpl"
3237 pp_filter_deps="gpl postproc"
3238 pullup_filter_deps="gpl"
3239 removelogo_filter_deps="avcodec avformat swscale"
3240 repeatfields_filter_deps="gpl"
3241 resample_filter_deps="avresample"
3242 rubberband_filter_deps="librubberband"
3243 sab_filter_deps="gpl swscale"
3244 scale2ref_filter_deps="swscale"
3245 scale_filter_deps="swscale"
3246 scale_qsv_filter_deps="libmfx"
3247 select_filter_select="pixelutils"
3248 showcqt_filter_deps="avcodec avformat swscale"
3249 showcqt_filter_select="fft"
3250 showfreqs_filter_deps="avcodec"
3251 showfreqs_filter_select="fft"
3252 showspectrum_filter_deps="avcodec"
3253 showspectrum_filter_select="fft"
3254 showspectrumpic_filter_deps="avcodec"
3255 showspectrumpic_filter_select="fft"
3256 signature_filter_deps="gpl avcodec avformat"
3257 smartblur_filter_deps="gpl swscale"
3258 sofalizer_filter_deps="libmysofa avcodec"
3259 sofalizer_filter_select="fft"
3260 spectrumsynth_filter_deps="avcodec"
3261 spectrumsynth_filter_select="fft"
3262 spp_filter_deps="gpl avcodec"
3263 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3264 stereo3d_filter_deps="gpl"
3265 subtitles_filter_deps="avformat avcodec libass"
3266 super2xsai_filter_deps="gpl"
3267 pixfmts_super2xsai_test_deps="super2xsai_filter"
3268 tinterlace_filter_deps="gpl"
3269 tinterlace_merge_test_deps="tinterlace_filter"
3270 tinterlace_pad_test_deps="tinterlace_filter"
3271 tonemap_filter_deps="const_nan"
3272 uspp_filter_deps="gpl avcodec"
3273 vaguedenoiser_filter_deps="gpl"
3274 vidstabdetect_filter_deps="libvidstab"
3275 vidstabtransform_filter_deps="libvidstab"
3276 libvmaf_filter_deps="libvmaf"
3277 zmq_filter_deps="libzmq"
3278 zoompan_filter_deps="swscale"
3279 zscale_filter_deps="libzimg const_nan"
3280 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3281
3282 # examples
3283 avio_dir_cmd_deps="avformat avutil"
3284 avio_reading_deps="avformat avcodec avutil"
3285 decode_audio_example_deps="avcodec avutil"
3286 decode_video_example_deps="avcodec avutil"
3287 demuxing_decoding_example_deps="avcodec avformat avutil"
3288 encode_audio_example_deps="avcodec avutil"
3289 encode_video_example_deps="avcodec avutil"
3290 extract_mvs_example_deps="avcodec avformat avutil"
3291 filter_audio_example_deps="avfilter avutil"
3292 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3293 filtering_video_example_deps="avfilter avcodec avformat avutil"
3294 http_multiclient_example_deps="avformat avutil fork"
3295 hw_decode_example_deps="avcodec avformat avutil"
3296 metadata_example_deps="avformat avutil"
3297 muxing_example_deps="avcodec avformat avutil swscale"
3298 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3299 remuxing_example_deps="avcodec avformat avutil"
3300 resampling_audio_example_deps="avutil swresample"
3301 scaling_video_example_deps="avutil swscale"
3302 transcode_aac_example_deps="avcodec avformat swresample"
3303 transcoding_example_deps="avfilter avcodec avformat avutil"
3304
3305 # libraries, in linking order
3306 avcodec_deps="avutil"
3307 avcodec_select="null_bsf"
3308 avdevice_deps="avformat avcodec avutil"
3309 avfilter_deps="avutil"
3310 avformat_deps="avcodec avutil"
3311 avformat_suggest="network"
3312 avresample_deps="avutil"
3313 postproc_deps="avutil gpl"
3314 swresample_deps="avutil"
3315 swscale_deps="avutil"
3316
3317 # programs
3318 ffmpeg_deps="avcodec avfilter avformat swresample"
3319 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3320                null_filter
3321                trim_filter"
3322 ffplay_deps="avcodec avformat swscale swresample sdl2"
3323 ffplay_extralibs='$sdl2_extralibs'
3324 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3325 ffprobe_deps="avcodec avformat"
3326 ffserver_deps="avformat fork sarestart"
3327 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3328
3329 # documentation
3330 podpages_deps="perl"
3331 manpages_deps="perl pod2man"
3332 htmlpages_deps="perl"
3333 htmlpages_deps_any="makeinfo_html texi2html"
3334 txtpages_deps="perl makeinfo"
3335 doc_deps_any="manpages htmlpages podpages txtpages"
3336
3337 # default parameters
3338
3339 logfile="ffbuild/config.log"
3340
3341 # installation paths
3342 prefix_default="/usr/local"
3343 bindir_default='${prefix}/bin'
3344 datadir_default='${prefix}/share/ffmpeg'
3345 docdir_default='${prefix}/share/doc/ffmpeg'
3346 incdir_default='${prefix}/include'
3347 libdir_default='${prefix}/lib'
3348 mandir_default='${prefix}/share/man'
3349
3350 # toolchain
3351 ar_default="ar"
3352 cc_default="gcc"
3353 cxx_default="g++"
3354 host_cc_default="gcc"
3355 doxygen_default="doxygen"
3356 install="install"
3357 ln_s_default="ln -s -f"
3358 nm_default="nm -g"
3359 pkg_config_default=pkg-config
3360 ranlib_default="ranlib"
3361 strip_default="strip"
3362 version_script='--version-script'
3363 x86asmexe_default="nasm"
3364 windres_default="windres"
3365 nvcc_default="nvcc"
3366 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3367 striptype="direct"
3368
3369 # OS
3370 target_os_default=$(tolower $(uname -s))
3371 host_os=$target_os_default
3372
3373 # machine
3374 if test "$target_os_default" = aix; then
3375     arch_default=$(uname -p)
3376     strip_default="strip -X32_64"
3377 else
3378     arch_default=$(uname -m)
3379 fi
3380 cpu="generic"
3381 intrinsics="none"
3382
3383 # configurable options
3384 enable $PROGRAM_LIST
3385 enable $DOCUMENT_LIST
3386 enable $EXAMPLE_LIST
3387 enable $(filter_out avresample $LIBRARY_LIST)
3388 enable stripping
3389
3390 enable asm
3391 enable debug
3392 enable doc
3393 enable faan faandct faanidct
3394 enable optimizations
3395 enable runtime_cpudetect
3396 enable safe_bitstream_reader
3397 enable static
3398 enable swscale_alpha
3399 enable valgrind_backtrace
3400
3401 sws_max_filter_size_default=256
3402 set_default sws_max_filter_size
3403
3404 # build settings
3405 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3406 LIBPREF="lib"
3407 LIBSUF=".a"
3408 FULLNAME='$(NAME)$(BUILDSUF)'
3409 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3410 SLIBPREF="lib"
3411 SLIBSUF=".so"
3412 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3413 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3414 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3415 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3416 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3417 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3418 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3419
3420 asflags_filter=echo
3421 cflags_filter=echo
3422 ldflags_filter=echo
3423
3424 AS_C='-c'
3425 AS_O='-o $@'
3426 CC_C='-c'
3427 CC_E='-E -o $@'
3428 CC_O='-o $@'
3429 CXX_C='-c'
3430 CXX_O='-o $@'
3431 OBJCC_C='-c'
3432 OBJCC_E='-E -o $@'
3433 OBJCC_O='-o $@'
3434 X86ASM_O='-o $@'
3435 LD_O='-o $@'
3436 LD_LIB='-l%'
3437 LD_PATH='-L'
3438 HOSTCC_C='-c'
3439 HOSTCC_E='-E -o $@'
3440 HOSTCC_O='-o $@'
3441 HOSTLD_O='-o $@'
3442 NVCC_C='-c'
3443 NVCC_O='-o $@'
3444
3445 host_extralibs='-lm'
3446 host_cflags_filter=echo
3447 host_ldflags_filter=echo
3448
3449 target_path='$(CURDIR)'
3450
3451 # since the object filename is not given with the -MM flag, the compiler
3452 # is only able to print the basename, and we must add the path ourselves
3453 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3454 DEPFLAGS='-MM'
3455
3456 mkdir -p ffbuild
3457
3458 # find source path
3459 if test -f configure; then
3460     source_path=.
3461 else
3462     source_path=$(cd $(dirname "$0"); pwd)
3463     case "$source_path" in
3464         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3465     esac
3466     test -e "$source_path/config.h" &&
3467         die "Out of tree builds are impossible with config.h in source dir."
3468 fi
3469
3470 for v in "$@"; do
3471     r=${v#*=}
3472     l=${v%"$r"}
3473     r=$(sh_quote "$r")
3474     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3475 done
3476
3477 find_things(){
3478     thing=$1
3479     pattern=$2
3480     file=$source_path/$3
3481     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3482 }
3483
3484 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3485 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3486 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3487 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3488 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3489 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3490 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3491 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3492 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3493
3494 find_things_extern(){
3495     thing=$1
3496     pattern=$2
3497     file=$source_path/$3
3498     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3499 }
3500
3501 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3502 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3503
3504 ALL_COMPONENTS="
3505     $BSF_LIST
3506     $DECODER_LIST
3507     $DEMUXER_LIST
3508     $ENCODER_LIST
3509     $FILTER_LIST
3510     $HWACCEL_LIST
3511     $INDEV_LIST
3512     $MUXER_LIST
3513     $OUTDEV_LIST
3514     $PARSER_LIST
3515     $PROTOCOL_LIST
3516 "
3517
3518 for n in $COMPONENT_LIST; do
3519     v=$(toupper ${n%s})_LIST
3520     eval enable \$$v
3521     eval ${n}_if_any="\$$v"
3522 done
3523
3524 enable $ARCH_EXT_LIST
3525
3526 die_unknown(){
3527     echo "Unknown option \"$1\"."
3528     echo "See $0 --help for available options."
3529     exit 1
3530 }
3531
3532 print_in_columns() {
3533     cols=$(expr $ncols / 24)
3534     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3535 }
3536
3537 show_list() {
3538     suffix=_$1
3539     shift
3540     echo $* | sed s/$suffix//g | print_in_columns
3541     exit 0
3542 }
3543
3544 rand_list(){
3545     IFS=', '
3546     set -- $*
3547     unset IFS
3548     for thing; do
3549         comp=${thing%:*}
3550         prob=${thing#$comp}
3551         prob=${prob#:}
3552         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3553         echo "prob ${prob:-0.5}"
3554         printf '%s\n' $comp
3555     done
3556 }
3557
3558 do_random(){
3559     action=$1
3560     shift
3561     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3562     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3563 }
3564
3565 for opt do
3566     optval="${opt#*=}"
3567     case "$opt" in
3568         --extra-ldflags=*)
3569             add_ldflags $optval
3570         ;;
3571         --extra-ldexeflags=*)
3572             add_ldexeflags $optval
3573         ;;
3574         --extra-ldlibflags=*)
3575             add_ldlibflags $optval
3576         ;;
3577         --extra-libs=*)
3578             add_extralibs $optval
3579         ;;
3580         --disable-devices)
3581             disable $INDEV_LIST $OUTDEV_LIST
3582         ;;
3583         --enable-debug=*)
3584             debuglevel="$optval"
3585         ;;
3586         --disable-programs)
3587             disable $PROGRAM_LIST
3588         ;;
3589         --disable-everything)
3590             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3591         ;;
3592         --disable-all)
3593             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3594             disable $LIBRARY_LIST $PROGRAM_LIST doc
3595             enable avutil
3596         ;;
3597         --enable-random|--disable-random)
3598             action=${opt%%-random}
3599             do_random ${action#--} $COMPONENT_LIST
3600         ;;
3601         --enable-random=*|--disable-random=*)
3602             action=${opt%%-random=*}
3603             do_random ${action#--} $optval
3604         ;;
3605         --enable-sdl)
3606             enable sdl2
3607         ;;
3608         --enable-*=*|--disable-*=*)
3609             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3610             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3611             eval list=\$$(toupper $thing)_LIST
3612             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3613             list=$(filter "$name" $list)
3614             [ "$list" = "" ] && warn "Option $opt did not match anything"
3615             $action $list
3616         ;;
3617         --enable-yasm|--disable-yasm)
3618             warn "The ${opt} option is only provided for compatibility and will be\n"\
3619                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3620             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3621         ;;
3622         --yasmexe=*)
3623             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3624                  "removed in the future. Use --x86asmexe instead."
3625             x86asmexe="$optval"
3626         ;;
3627         --enable-?*|--disable-?*)
3628             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3629             if is_in $option $COMPONENT_LIST; then
3630                 test $action = disable && action=unset
3631                 eval $action \$$(toupper ${option%s})_LIST
3632             elif is_in $option $CMDLINE_SELECT; then
3633                 $action $option
3634             else
3635                 die_unknown $opt
3636             fi
3637         ;;
3638         --list-*)
3639             NAME="${opt#--list-}"
3640             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3641             NAME=${NAME%s}
3642             eval show_list $NAME \$$(toupper $NAME)_LIST
3643         ;;
3644         --help|-h) show_help
3645         ;;
3646         --quiet|-q) quiet=yes
3647         ;;
3648         --fatal-warnings) enable fatal_warnings
3649         ;;
3650         --libfuzzer=*)
3651             libfuzzer_path="$optval"
3652         ;;
3653         *)
3654             optname="${opt%%=*}"
3655             optname="${optname#--}"
3656             optname=$(echo "$optname" | sed 's/-/_/g')
3657             if is_in $optname $CMDLINE_SET; then
3658                 eval $optname='$optval'
3659             elif is_in $optname $CMDLINE_APPEND; then
3660                 append $optname "$optval"
3661             else
3662                 die_unknown $opt
3663             fi
3664         ;;
3665     esac
3666 done
3667
3668 for e in $env; do
3669     eval "export $e"
3670 done
3671
3672 if disabled autodetect; then
3673
3674     # Unless iconv is explicitely disabled by the user, we still want to probe
3675     # for the iconv from the libc.
3676     disabled iconv || enable libc_iconv
3677
3678     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3679     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3680 fi
3681 # Mark specifically enabled, but normally autodetected libraries as requested.
3682 for lib in $AUTODETECT_LIBS; do
3683     enabled $lib && request $lib
3684 done
3685 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3686 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3687 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3688
3689 disabled logging && logfile=/dev/null
3690
3691 die_license_disabled() {
3692     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3693 }
3694
3695 die_license_disabled_gpl() {
3696     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3697 }
3698
3699 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3700 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3701
3702 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3703 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3704
3705 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3706
3707 # Disable all the library-specific components if the library itself
3708 # is disabled, see AVCODEC_LIST and following _LIST variables.
3709
3710 disable_components(){
3711     disabled ${1} && disable $(
3712         eval components="\$$(toupper ${1})_COMPONENTS"
3713         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3714     )
3715 }
3716
3717 map 'disable_components $v' $LIBRARY_LIST
3718
3719 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3720 set >> $logfile
3721
3722 test -n "$valgrind" && toolchain="valgrind-memcheck"
3723
3724 enabled ossfuzz && {
3725     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3726     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3727 }
3728
3729 case "$toolchain" in
3730     *-asan)
3731         cc_default="${toolchain%-asan}"
3732         add_cflags  -fsanitize=address
3733         add_ldflags -fsanitize=address
3734     ;;
3735     *-msan)
3736         cc_default="${toolchain%-msan}"
3737         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3738         add_ldflags -fsanitize=memory
3739     ;;
3740     *-tsan)
3741         cc_default="${toolchain%-tsan}"
3742         add_cflags  -fsanitize=thread -fPIE
3743         add_ldflags -fsanitize=thread -pie
3744         case "$toolchain" in
3745             gcc-tsan)
3746                 add_cflags  -fPIC
3747                 add_ldflags -fPIC
3748                 ;;
3749         esac
3750     ;;
3751     *-usan)
3752         cc_default="${toolchain%-usan}"
3753         add_cflags  -fsanitize=undefined
3754         add_ldflags -fsanitize=undefined
3755     ;;
3756     valgrind-*)
3757         target_exec_default="valgrind"
3758         case "$toolchain" in
3759             valgrind-massif)
3760                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3761                 ;;
3762             valgrind-memcheck)
3763                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3764                 ;;
3765         esac
3766     ;;
3767     msvc)
3768         # Check whether the current MSVC version needs the C99 converter.
3769         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3770         # support enough of C99 to build ffmpeg. Default to the new
3771         # behaviour if the regexp was unable to match anything, since this
3772         # successfully parses the version number of existing supported
3773         # versions that require the converter (MSVC 2010 and 2012).
3774         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3775         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3776             cc_default="cl"
3777             cxx_default="cl"
3778         else
3779             cc_default="c99wrap cl"
3780             cxx_default="c99wrap cl"
3781         fi
3782         ld_default="$source_path/compat/windows/mslink"
3783         nm_default="dumpbin -symbols"
3784         ar_default="lib"
3785         case "$arch" in
3786         arm*)
3787             as_default="armasm"
3788             ;;
3789         esac
3790         target_os_default="win32"
3791         # Use a relative path for TMPDIR. This makes sure all the
3792         # ffconf temp files are written with a relative path, avoiding
3793         # issues with msys/win32 path conversion for MSVC parameters
3794         # such as -Fo<file> or -out:<file>.
3795         TMPDIR=.
3796     ;;
3797     icl)
3798         cc_default="icl"
3799         ld_default="xilink"
3800         nm_default="dumpbin -symbols"
3801         ar_default="xilib"
3802         target_os_default="win32"
3803         TMPDIR=.
3804     ;;
3805     gcov)
3806         add_cflags  -fprofile-arcs -ftest-coverage
3807         add_ldflags -fprofile-arcs -ftest-coverage
3808     ;;
3809     llvm-cov)
3810         add_cflags -fprofile-arcs -ftest-coverage
3811         add_ldflags --coverage
3812     ;;
3813     hardened)
3814         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3815         add_cflags   -fno-strict-overflow -fstack-protector-all
3816         add_ldflags  -Wl,-z,relro -Wl,-z,now
3817         add_cflags   -fPIE
3818         add_ldexeflags -fPIE -pie
3819     ;;
3820     ?*)
3821         die "Unknown toolchain $toolchain"
3822     ;;
3823 esac
3824
3825 test -n "$cross_prefix" && enable cross_compile
3826
3827 if enabled cross_compile; then
3828     test -n "$arch" && test -n "$target_os" ||
3829         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3830 fi
3831
3832 ar_default="${cross_prefix}${ar_default}"
3833 cc_default="${cross_prefix}${cc_default}"
3834 cxx_default="${cross_prefix}${cxx_default}"
3835 nm_default="${cross_prefix}${nm_default}"
3836 pkg_config_default="${cross_prefix}${pkg_config_default}"
3837 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3838     ranlib_default="${cross_prefix}${ranlib_default} -D"
3839 else
3840     ranlib_default="${cross_prefix}${ranlib_default}"
3841 fi
3842 strip_default="${cross_prefix}${strip_default}"
3843 windres_default="${cross_prefix}${windres_default}"
3844
3845 sysinclude_default="${sysroot}/usr/include"
3846
3847 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3848     target_exec target_os x86asmexe nvcc
3849 enabled cross_compile || host_cc_default=$cc
3850 set_default host_cc
3851
3852 pkg_config_fail_message=""
3853 if ! $pkg_config --version >/dev/null 2>&1; then
3854     warn "$pkg_config not found, library detection may fail."
3855     pkg_config=false
3856 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3857     pkg_config_fail_message="
3858 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3859 fi
3860
3861 if test $doxygen != $doxygen_default && \
3862   ! $doxygen --version >/dev/null 2>&1; then
3863     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3864 fi
3865
3866 exesuf() {
3867     case $1 in
3868         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3869     esac
3870 }
3871
3872 EXESUF=$(exesuf $target_os)
3873 HOSTEXESUF=$(exesuf $host_os)
3874
3875 # set temporary file name
3876 : ${TMPDIR:=$TEMPDIR}
3877 : ${TMPDIR:=$TMP}
3878 : ${TMPDIR:=/tmp}
3879
3880 if [ -n "$tempprefix" ] ; then
3881     mktemp(){
3882         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3883         echo "$tmpname"
3884         mkdir "$tmpname"
3885     }
3886 elif ! check_cmd mktemp -u XXXXXX; then
3887     # simple replacement for missing mktemp
3888     # NOT SAFE FOR GENERAL USE
3889     mktemp(){
3890         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3891         echo "$tmpname"
3892         mkdir "$tmpname"
3893     }
3894 fi
3895
3896 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3897     die "Unable to create temporary directory in $TMPDIR."
3898
3899 tmpfile(){
3900     tmp="${FFTMPDIR}/test"$2
3901     (set -C; exec > $tmp) 2> /dev/null ||
3902         die "Unable to create temporary file in $FFTMPDIR."
3903     eval $1=$tmp
3904 }
3905
3906 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3907 trap 'exit 2' INT
3908
3909 tmpfile TMPASM .asm
3910 tmpfile TMPC   .c
3911 tmpfile TMPCPP .cpp
3912 tmpfile TMPE   $EXESUF
3913 tmpfile TMPH   .h
3914 tmpfile TMPM   .m
3915 tmpfile TMPO   .o
3916 tmpfile TMPS   .S
3917 tmpfile TMPSH  .sh
3918 tmpfile TMPV   .ver
3919
3920 unset -f mktemp
3921
3922 chmod +x $TMPE
3923
3924 # make sure we can execute files in $TMPDIR
3925 cat > $TMPSH 2>> $logfile <<EOF
3926 #! /bin/sh
3927 EOF
3928 chmod +x $TMPSH >> $logfile 2>&1
3929 if ! $TMPSH >> $logfile 2>&1; then
3930     cat <<EOF
3931 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3932 variable to another directory and make sure that it is not mounted noexec.
3933 EOF
3934     die "Sanity test failed."
3935 fi
3936
3937 armasm_flags(){
3938     for flag; do
3939         case $flag in
3940             # Filter out MSVC cl.exe options from cflags that shouldn't
3941             # be passed to gas-preprocessor
3942             -M[TD]*)                                            ;;
3943             *)                  echo $flag                      ;;
3944         esac
3945    done
3946 }
3947
3948 ccc_flags(){
3949     for flag; do
3950         case $flag in
3951             -std=c99)           echo -c99                       ;;
3952             -mcpu=*)            echo -arch ${flag#*=}           ;;
3953             -mieee)             echo -ieee                      ;;
3954             -O*|-fast)          echo $flag                      ;;
3955             -fno-math-errno)    echo -assume nomath_errno       ;;
3956             -g)                 echo -g3                        ;;
3957             -Wall)              echo -msg_enable level2         ;;
3958             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3959             -Wl,*)              echo $flag                      ;;
3960             -f*|-W*)                                            ;;
3961             *)                  echo $flag                      ;;
3962         esac
3963    done
3964 }
3965
3966 cparser_flags(){
3967     for flag; do
3968         case $flag in
3969             -Wno-switch)             echo -Wno-switch-enum ;;
3970             -Wno-format-zero-length) ;;
3971             -Wdisabled-optimization) ;;
3972             -Wno-pointer-sign)       echo -Wno-other ;;
3973             *)                       echo $flag ;;
3974         esac
3975     done
3976 }
3977
3978 msvc_common_flags(){
3979     for flag; do
3980         case $flag in
3981             # In addition to specifying certain flags under the compiler
3982             # specific filters, they must be specified here as well or else the
3983             # generic catch all at the bottom will print the original flag.
3984             -Wall)                ;;
3985             -Wextra)              ;;
3986             -std=c99)             ;;
3987             # Common flags
3988             -fomit-frame-pointer) ;;
3989             -g)                   echo -Z7 ;;
3990             -fno-math-errno)      ;;
3991             -fno-common)          ;;
3992             -fno-signed-zeros)    ;;
3993             -fPIC)                ;;
3994             -mthumb)              ;;
3995             -march=*)             ;;
3996             -lz)                  echo zlib.lib ;;
3997             -lx264)               echo libx264.lib ;;
3998             -lstdc++)             ;;
3999             -l*)                  echo ${flag#-l}.lib ;;
4000             -LARGEADDRESSAWARE)   echo $flag ;;
4001             -L*)                  echo -libpath:${flag#-L} ;;
4002             *)                    echo $flag ;;
4003         esac
4004     done
4005 }
4006
4007 msvc_flags(){
4008     msvc_common_flags "$@"
4009     for flag; do
4010         case $flag in
4011             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4012                                        -wd4554 ;;
4013             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4014                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4015                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4016                                        -wd4307 \
4017                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4018         esac
4019     done
4020 }
4021
4022 icl_flags(){
4023     msvc_common_flags "$@"
4024     for flag; do
4025         case $flag in
4026             # Despite what Intel's documentation says -Wall, which is supported
4027             # on Windows, does enable remarks so disable them here.
4028             -Wall)                echo $flag -Qdiag-disable:remark ;;
4029             -std=c99)             echo -Qstd=c99 ;;
4030             -flto)                echo -ipo ;;
4031         esac
4032     done
4033 }
4034
4035 icc_flags(){
4036     for flag; do
4037         case $flag in
4038             -flto)                echo -ipo ;;
4039             *)                    echo $flag ;;
4040         esac
4041     done
4042 }
4043
4044 pgi_flags(){
4045     for flag; do
4046         case $flag in
4047             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4048             -fomit-frame-pointer) echo -Mnoframe ;;
4049             -g)                   echo -gopt ;;
4050             *)                    echo $flag ;;
4051         esac
4052     done
4053 }
4054
4055 suncc_flags(){
4056     for flag; do
4057         case $flag in
4058             -march=*|-mcpu=*)
4059                 case "${flag#*=}" in
4060                     native)                   echo -xtarget=native       ;;
4061                     v9|niagara)               echo -xarch=sparc          ;;
4062                     ultrasparc)               echo -xarch=sparcvis       ;;
4063                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4064                     i586|pentium)             echo -xchip=pentium        ;;
4065                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4066                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4067                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4068                     pentium4*)          echo -xtarget=pentium4           ;;
4069                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4070                     *-sse3)             echo -xarch=sse3                 ;;
4071                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4072                     bonnell)                   echo -xarch=ssse3         ;;
4073                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4074                     westmere)                  echo -xtarget=westmere    ;;
4075                     silvermont)                echo -xarch=sse4_2        ;;
4076                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4077                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4078                                                echo -xarch=avx           ;;
4079                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4080                     btver1)                    echo -xarch=amdsse4a      ;;
4081                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4082                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4083                     k8|opteron|athlon64|athlon-fx)
4084                                                echo -xarch=sse2a         ;;
4085                     athlon*)                   echo -xarch=pentium_proa  ;;
4086                 esac
4087                 ;;
4088             -std=c99)             echo -xc99              ;;
4089             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4090             -fPIC)                echo -KPIC -xcode=pic32 ;;
4091             -W*,*)                echo $flag              ;;
4092             -f*-*|-W*|-mimpure-text)                      ;;
4093             -shared)              echo -G                 ;;
4094             *)                    echo $flag              ;;
4095         esac
4096     done
4097 }
4098
4099 tms470_flags(){
4100     for flag; do
4101         case $flag in
4102             -march=*|-mcpu=*)
4103                 case "${flag#*=}" in
4104                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4105                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4106                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4107                     armv6*|arm11*)          echo -mv=6   ;;
4108                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4109                                             echo -mv=5e  ;;
4110                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4111                 esac
4112                 ;;
4113             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4114             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4115             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4116             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4117             -msoft-float)   echo --float_support=vfplib       ;;
4118             -O[0-3]|-mf=*)  echo $flag                        ;;
4119             -g)             echo -g -mn                       ;;
4120             -pds=*)         echo $flag                        ;;
4121             -D*|-I*)        echo $flag                        ;;
4122             --gcc|--abi=*)  echo $flag                        ;;
4123             -me)            echo $flag                        ;;
4124         esac
4125     done
4126 }
4127
4128 probe_cc(){
4129     pfx=$1
4130     _cc=$2
4131     first=$3
4132
4133     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4134     unset _ld_o _ldflags _ld_lib _ld_path
4135     unset _depflags _DEPCMD _DEPFLAGS
4136     _flags_filter=echo
4137
4138     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4139         true # no-op to avoid reading stdin in following checks
4140     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4141         _type=llvm_gcc
4142         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4143         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4144         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4145         _cflags_speed='-O3'
4146         _cflags_size='-Os'
4147     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4148         _type=gcc
4149         gcc_version=$($_cc --version | head -n1)
4150         gcc_basever=$($_cc -dumpversion)
4151         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4152         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4153         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4154         case $gcc_basever in
4155             2) ;;
4156             2.*) ;;
4157             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4158         esac
4159         if [ "$first" = true ]; then
4160             case $gcc_basever in
4161                 4.2*)
4162                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4163             esac
4164         fi
4165         _cflags_speed='-O3'
4166         _cflags_size='-Os'
4167     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4168         _type=icc
4169         _ident=$($_cc --version | head -n1)
4170         _depflags='-MMD'
4171         _cflags_speed='-O3'
4172         _cflags_size='-Os'
4173         _cflags_noopt='-O1'
4174         _flags_filter=icc_flags
4175     elif $_cc -v 2>&1 | grep -q xlc; then
4176         _type=xlc
4177         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4178         _cflags_speed='-O5'
4179         _cflags_size='-O5 -qcompact'
4180     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4181         _type=ccc
4182         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4183         _DEPFLAGS='-M'
4184         _cflags_speed='-fast'
4185         _cflags_size='-O1'
4186         _flags_filter=ccc_flags
4187     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4188         test -d "$sysroot" || die "No valid sysroot specified."
4189         _type=armcc
4190         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4191         armcc_conf="$PWD/armcc.conf"
4192         $_cc --arm_linux_configure                 \
4193              --arm_linux_config_file="$armcc_conf" \
4194              --configure_sysroot="$sysroot"        \
4195              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4196              die "Error creating armcc configuration file."
4197         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4198         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4199         as_default="${cross_prefix}gcc"
4200         _depflags='-MMD'
4201         _cflags_speed='-O3'
4202         _cflags_size='-Os'
4203     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4204         _type=tms470
4205         _ident=$($_cc -version | head -n1 | tr -s ' ')
4206         _flags='--gcc --abi=eabi -me'
4207         _cc_e='-ppl -fe=$@'
4208         _cc_o='-fe=$@'
4209         _depflags='-ppa -ppd=$(@:.o=.d)'
4210         _cflags_speed='-O3 -mf=5'
4211         _cflags_size='-O3 -mf=2'
4212         _flags_filter=tms470_flags
4213     elif $_cc -v 2>&1 | grep -q clang; then
4214         _type=clang
4215         _ident=$($_cc --version 2>/dev/null | head -n1)
4216         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4217         _cflags_speed='-O3'
4218         _cflags_size='-Oz'
4219     elif $_cc -V 2>&1 | grep -q Sun; then
4220         _type=suncc
4221         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4222         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4223         _DEPFLAGS='-xM1 -xc99'
4224         _ldflags='-std=c99'
4225         _cflags_speed='-O5'
4226         _cflags_size='-O5 -xspace'
4227         _flags_filter=suncc_flags
4228     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4229         _type=pathscale
4230         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4231         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4232         _cflags_speed='-O2'
4233         _cflags_size='-Os'
4234         _flags_filter='filter_out -Wdisabled-optimization'
4235     elif $_cc -v 2>&1 | grep -q Open64; then
4236         _type=open64
4237         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4238         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4239         _cflags_speed='-O2'
4240         _cflags_size='-Os'
4241         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4242     elif $_cc -V 2>&1 | grep -q Portland; then
4243         _type=pgi
4244         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4245         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4246         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4247         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4248         _cflags_noopt="-O"
4249         _flags_filter=pgi_flags
4250     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4251         _type=armasm
4252         _ident=$($_cc | head -n1)
4253         # 4509: "This form of conditional instruction is deprecated"
4254         _flags="-nologo -ignore 4509"
4255         _flags_filter=armasm_flags
4256     elif $_cc 2>&1 | grep -q Intel; then
4257         _type=icl
4258         _ident=$($_cc 2>&1 | head -n1)
4259         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4260         # Not only is O3 broken on 13.x+ but it is slower on all previous
4261         # versions (tested) as well.
4262         _cflags_speed="-O2"
4263         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4264         if $_cc 2>&1 | grep -q Linker; then
4265             _ld_o='-out:$@'
4266         else
4267             _ld_o='-Fe$@'
4268         fi
4269         _cc_o='-Fo$@'
4270         _cc_e='-P'
4271         _flags_filter=icl_flags
4272         _ld_lib='lib%.a'
4273         _ld_path='-libpath:'
4274         # -Qdiag-error to make icl error when seeing certain unknown arguments
4275         _flags='-nologo -Qdiag-error:4044,10157'
4276         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4277         # with MSVC which enables it by default.
4278         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4279         disable stripping
4280     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4281         # lld can emulate multiple different linkers; in ms link.exe mode,
4282         # the -? parameter gives the help output which contains an identifyable
4283         # string, while it gives an error in other modes.
4284         _type=lld-link
4285         # The link.exe mode doesn't have a switch for getting the version,
4286         # but we can force it back to gnu mode and get the version from there.
4287         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4288         _ld_o='-out:$@'
4289         _flags_filter=msvc_flags
4290         _ld_lib='lib%.a'
4291         _ld_path='-libpath:'
4292     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4293         _type=msvc
4294         _ident=$($_cc 2>&1 | head -n1)
4295         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4296         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4297         _cflags_speed="-O2"
4298         _cflags_size="-O1"
4299         _cflags_noopt="-O1"
4300         if $_cc -nologo- 2>&1 | grep -q Linker; then
4301             _ld_o='-out:$@'
4302         else
4303             _ld_o='-Fe$@'
4304         fi
4305         _cc_o='-Fo$@'
4306         _cc_e='-P -Fi$@'
4307         _flags_filter=msvc_flags
4308         _ld_lib='lib%.a'
4309         _ld_path='-libpath:'
4310         _flags='-nologo'
4311         disable stripping
4312     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4313         _type=cparser
4314         _ident=$($_cc --version | head -n1)
4315         _depflags='-MMD'
4316         _cflags_speed='-O4'
4317         _cflags_size='-O2'
4318         _flags_filter=cparser_flags
4319     fi
4320
4321     eval ${pfx}_type=\$_type
4322     eval ${pfx}_ident=\$_ident
4323 }
4324
4325 set_ccvars(){
4326     eval ${1}_C=\${_cc_c-\${${1}_C}}
4327     eval ${1}_E=\${_cc_e-\${${1}_E}}
4328     eval ${1}_O=\${_cc_o-\${${1}_O}}
4329
4330     if [ -n "$_depflags" ]; then
4331         eval ${1}_DEPFLAGS=\$_depflags
4332     else
4333         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4334         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4335         eval DEP${1}FLAGS=\$_flags
4336     fi
4337 }
4338
4339 probe_cc cc "$cc" "true"
4340 cflags_filter=$_flags_filter
4341 cflags_speed=$_cflags_speed
4342 cflags_size=$_cflags_size
4343 cflags_noopt=$_cflags_noopt
4344 add_cflags $_flags $_cflags
4345 cc_ldflags=$_ldflags
4346 set_ccvars CC
4347 set_ccvars CXX
4348
4349 probe_cc hostcc "$host_cc"
4350 host_cflags_filter=$_flags_filter
4351 host_cflags_speed=$_cflags_speed
4352 add_host_cflags  $_flags $_cflags
4353 set_ccvars HOSTCC
4354
4355 test -n "$cc_type" && enable $cc_type ||
4356     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4357
4358 : ${as_default:=$cc}
4359 : ${objcc_default:=$cc}
4360 : ${dep_cc_default:=$cc}
4361 : ${ld_default:=$cc}
4362 : ${host_ld_default:=$host_cc}
4363 set_default ar as objcc dep_cc ld ln_s host_ld windres
4364
4365 probe_cc as "$as"
4366 asflags_filter=$_flags_filter
4367 add_asflags $_flags $_cflags
4368 set_ccvars AS
4369
4370 probe_cc objcc "$objcc"
4371 objcflags_filter=$_flags_filter
4372 add_objcflags $_flags $_cflags
4373 set_ccvars OBJC
4374
4375 probe_cc ld "$ld"
4376 ldflags_filter=$_flags_filter
4377 add_ldflags $_flags $_ldflags
4378 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4379 LD_O=${_ld_o-$LD_O}
4380 LD_LIB=${_ld_lib-$LD_LIB}
4381 LD_PATH=${_ld_path-$LD_PATH}
4382
4383 probe_cc hostld "$host_ld"
4384 host_ldflags_filter=$_flags_filter
4385 add_host_ldflags $_flags $_ldflags
4386 HOSTLD_O=${_ld_o-$HOSTLD_O}
4387
4388 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4389     probe_cc depcc "$dep_cc"
4390     CCDEP=${_DEPCMD:-$DEPCMD}
4391     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4392     DEPCCFLAGS=$_flags
4393 fi
4394
4395 if $ar 2>&1 | grep -q Microsoft; then
4396     arflags="-nologo"
4397     ar_o='-out:$@'
4398 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4399     arflags="rq"
4400     ar_o='$@'
4401 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4402     arflags='-Xany -r -c'
4403     ar_o='$@'
4404 elif $ar 2>&1 | grep -q "\[D\] "; then
4405     arflags="rcD"
4406     ar_o='$@'
4407 else
4408     arflags="rc"
4409     ar_o='$@'
4410 fi
4411
4412 add_cflags $extra_cflags
4413 add_cxxflags $extra_cxxflags
4414 add_objcflags $extra_objcflags
4415 add_asflags $extra_cflags
4416
4417 if test -n "$sysroot"; then
4418     case "$cc_type" in
4419         gcc|llvm_gcc|clang)
4420             add_cppflags --sysroot="$sysroot"
4421             add_ldflags --sysroot="$sysroot"
4422 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4423             add_cppflags -isysroot "$sysroot"
4424             add_ldflags -isysroot "$sysroot"
4425         ;;
4426         tms470)
4427             add_cppflags -I"$sysinclude"
4428             add_ldflags  --sysroot="$sysroot"
4429         ;;
4430     esac
4431 fi
4432
4433 if test "$cpu" = host; then
4434     enabled cross_compile &&
4435         die "--cpu=host makes no sense when cross-compiling."
4436
4437     case "$cc_type" in
4438         gcc|llvm_gcc)
4439             check_native(){
4440                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4441                 sed -n "/cc1.*$1=/{
4442                             s/.*$1=\\([^ ]*\\).*/\\1/
4443                             p
4444                             q
4445                         }" $TMPE
4446             }
4447             cpu=$(check_native -march || check_native -mcpu)
4448         ;;
4449         clang)
4450             check_native(){
4451                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4452                 sed -n "/cc1.*-target-cpu /{
4453                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4454                             p
4455                             q
4456                         }" $TMPE
4457             }
4458             cpu=$(check_native -march)
4459         ;;
4460     esac
4461
4462     test "${cpu:-host}" = host &&
4463         die "--cpu=host not supported with compiler $cc"
4464 fi
4465
4466 # Deal with common $arch aliases
4467 case "$arch" in
4468     aarch64|arm64)
4469         arch="aarch64"
4470     ;;
4471     arm*|iPad*|iPhone*)
4472         arch="arm"
4473     ;;
4474     mips*|IP*)
4475         case "$arch" in
4476         *el)
4477             add_cppflags -EL
4478             add_ldflags -EL
4479         ;;
4480         *eb)
4481             add_cppflags -EB
4482             add_ldflags -EB
4483         ;;
4484         esac
4485         arch="mips"
4486     ;;
4487     parisc*|hppa*)
4488         arch="parisc"
4489     ;;
4490     "Power Macintosh"|ppc*|powerpc*)
4491         arch="ppc"
4492     ;;
4493     s390|s390x)
4494         arch="s390"
4495     ;;
4496     sh4|sh)
4497         arch="sh4"
4498     ;;
4499     sun4*|sparc*)
4500         arch="sparc"
4501     ;;
4502     tilegx|tile-gx)
4503         arch="tilegx"
4504     ;;
4505     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4506         arch="x86"
4507     ;;
4508 esac
4509
4510 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4511 enable $arch
4512
4513 # Add processor-specific flags
4514 if enabled aarch64; then
4515
4516     case $cpu in
4517         armv*)
4518             cpuflags="-march=$cpu"
4519         ;;
4520         *)
4521             cpuflags="-mcpu=$cpu"
4522         ;;
4523     esac
4524
4525 elif enabled alpha; then
4526
4527     cpuflags="-mcpu=$cpu"
4528
4529 elif enabled arm; then
4530
4531     check_arm_arch() {
4532         check_cpp_condition stddef.h \
4533             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4534             $cpuflags
4535     }
4536
4537     probe_arm_arch() {
4538         if   check_arm_arch 4;        then echo armv4
4539         elif check_arm_arch 4T;       then echo armv4t
4540         elif check_arm_arch 5;        then echo armv5
4541         elif check_arm_arch 5E;       then echo armv5e
4542         elif check_arm_arch 5T;       then echo armv5t
4543         elif check_arm_arch 5TE;      then echo armv5te
4544         elif check_arm_arch 5TEJ;     then echo armv5te
4545         elif check_arm_arch 6;        then echo armv6
4546         elif check_arm_arch 6J;       then echo armv6j
4547         elif check_arm_arch 6K;       then echo armv6k
4548         elif check_arm_arch 6Z;       then echo armv6z
4549         elif check_arm_arch 6ZK;      then echo armv6zk
4550         elif check_arm_arch 6T2;      then echo armv6t2
4551         elif check_arm_arch 7;        then echo armv7
4552         elif check_arm_arch 7A  7_A;  then echo armv7-a
4553         elif check_arm_arch 7S;       then echo armv7-a
4554         elif check_arm_arch 7R  7_R;  then echo armv7-r
4555         elif check_arm_arch 7M  7_M;  then echo armv7-m
4556         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4557         elif check_arm_arch 8A  8_A;  then echo armv8-a
4558         fi
4559     }
4560
4561     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4562
4563     case $cpu in
4564         armv*)
4565             cpuflags="-march=$cpu"
4566             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4567         ;;
4568         *)
4569             cpuflags="-mcpu=$cpu"
4570             case $cpu in
4571                 cortex-a*)                               subarch=armv7a  ;;
4572                 cortex-r*)                               subarch=armv7r  ;;
4573                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4574                 arm11*)                                  subarch=armv6   ;;
4575                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4576                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4577                 *)                             subarch=$(probe_arm_arch) ;;
4578             esac
4579         ;;
4580     esac
4581
4582     case "$subarch" in
4583         armv5t*)    enable fast_clz                ;;
4584         armv[6-8]*)
4585             enable fast_clz
4586             disabled fast_unaligned || enable fast_unaligned
4587             ;;
4588     esac
4589
4590 elif enabled avr32; then
4591
4592     case $cpu in
4593         ap7[02]0[0-2])
4594             subarch="avr32_ap"
4595             cpuflags="-mpart=$cpu"
4596         ;;
4597         ap)
4598             subarch="avr32_ap"
4599             cpuflags="-march=$cpu"
4600         ;;
4601         uc3[ab]*)
4602             subarch="avr32_uc"
4603             cpuflags="-mcpu=$cpu"
4604         ;;
4605         uc)
4606             subarch="avr32_uc"
4607             cpuflags="-march=$cpu"
4608         ;;
4609     esac
4610
4611 elif enabled bfin; then
4612
4613     cpuflags="-mcpu=$cpu"
4614
4615 elif enabled mips; then
4616
4617     cpuflags="-march=$cpu"
4618
4619     if [ "$cpu" != "generic" ]; then
4620         disable mips32r2
4621         disable mips32r5
4622         disable mips64r2
4623         disable mips32r6
4624         disable mips64r6
4625         disable loongson2
4626         disable loongson3
4627
4628         case $cpu in
4629             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4630                 enable mips32r2
4631                 disable msa
4632             ;;
4633             p5600|i6400|p6600)
4634                 disable mipsdsp
4635                 disable mipsdspr2
4636             ;;
4637             loongson*)
4638                 enable loongson2
4639                 enable loongson3
4640                 enable local_aligned_8 local_aligned_16 local_aligned_32
4641                 enable simd_align_16
4642                 enable fast_64bit
4643                 enable fast_clz
4644                 enable fast_cmov
4645                 enable fast_unaligned
4646                 disable aligned_stack
4647                 disable mipsfpu
4648                 disable mipsdsp
4649                 disable mipsdspr2
4650                 case $cpu in
4651                     loongson3*)
4652                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4653                     ;;
4654                     loongson2e)
4655                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4656                     ;;
4657                     loongson2f)
4658                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4659                     ;;
4660                 esac
4661             ;;
4662             *)
4663                 # Unknown CPU. Disable everything.
4664                 warn "unknown CPU. Disabling all MIPS optimizations."
4665                 disable mipsfpu
4666                 disable mipsdsp
4667                 disable mipsdspr2
4668                 disable msa
4669                 disable mmi
4670             ;;
4671         esac
4672
4673         case $cpu in
4674             24kc)
4675                 disable mipsfpu
4676                 disable mipsdsp
4677                 disable mipsdspr2
4678             ;;
4679             24kf*)
4680                 disable mipsdsp
4681                 disable mipsdspr2
4682             ;;
4683             24kec|34kc|1004kc)
4684                 disable mipsfpu
4685                 disable mipsdspr2
4686             ;;
4687             24kef*|34kf*|1004kf*)
4688                 disable mipsdspr2
4689             ;;
4690             74kc)
4691                 disable mipsfpu
4692             ;;
4693             p5600)
4694                 enable mips32r5
4695                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4696             ;;
4697             i6400)
4698                 enable mips64r6
4699                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4700             ;;
4701             p6600)
4702                 enable mips64r6
4703                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4704             ;;
4705         esac
4706     else
4707         # We do not disable anything. Is up to the user to disable the unwanted features.
4708         warn 'generic cpu selected'
4709     fi
4710
4711 elif enabled ppc; then
4712
4713     disable ldbrx
4714
4715     case $(tolower $cpu) in
4716         601|ppc601|powerpc601)
4717             cpuflags="-mcpu=601"
4718             disable altivec
4719         ;;
4720         603*|ppc603*|powerpc603*)
4721             cpuflags="-mcpu=603"
4722             disable altivec
4723         ;;
4724         604*|ppc604*|powerpc604*)
4725             cpuflags="-mcpu=604"
4726             disable altivec
4727         ;;
4728         g3|75*|ppc75*|powerpc75*)
4729             cpuflags="-mcpu=750"
4730             disable altivec
4731         ;;
4732         g4|745*|ppc745*|powerpc745*)
4733             cpuflags="-mcpu=7450"
4734             disable vsx
4735         ;;
4736         74*|ppc74*|powerpc74*)
4737             cpuflags="-mcpu=7400"
4738             disable vsx
4739         ;;
4740         g5|970|ppc970|powerpc970)
4741             cpuflags="-mcpu=970"
4742             disable vsx
4743         ;;
4744         power[3-6]*)
4745             cpuflags="-mcpu=$cpu"
4746             disable vsx
4747         ;;
4748         power[7-8]*)
4749             cpuflags="-mcpu=$cpu"
4750         ;;
4751         cell)
4752             cpuflags="-mcpu=cell"
4753             enable ldbrx
4754             disable vsx
4755         ;;
4756         e500mc)
4757             cpuflags="-mcpu=e500mc"
4758             disable altivec
4759         ;;
4760         e500v2)
4761             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4762             disable altivec
4763             disable dcbzl
4764         ;;
4765         e500)
4766             cpuflags="-mcpu=8540 -mhard-float"
4767             disable altivec
4768             disable dcbzl
4769         ;;
4770     esac
4771
4772 elif enabled sparc; then
4773
4774     case $cpu in
4775         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4776             cpuflags="-mcpu=$cpu"
4777         ;;
4778         ultrasparc*|niagara[234])
4779             cpuflags="-mcpu=$cpu"
4780         ;;
4781     esac
4782
4783 elif enabled x86; then
4784
4785     case $cpu in
4786         i[345]86|pentium)
4787             cpuflags="-march=$cpu"
4788             disable i686
4789             disable mmx
4790         ;;
4791         # targets that do NOT support nopl and conditional mov (cmov)
4792         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4793             cpuflags="-march=$cpu"
4794             disable i686
4795         ;;
4796         # targets that do support nopl and conditional mov (cmov)
4797         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4798         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4799         |amdfam10|barcelona|b[dt]ver*|znver*)
4800             cpuflags="-march=$cpu"
4801             enable i686
4802             enable fast_cmov
4803         ;;
4804         # targets that do support conditional mov but on which it's slow
4805         pentium4|pentium4m|prescott|nocona)
4806             cpuflags="-march=$cpu"
4807             enable i686
4808             disable fast_cmov
4809         ;;
4810     esac
4811
4812 fi
4813
4814 if [ "$cpu" != generic ]; then
4815     add_cflags  $cpuflags
4816     add_asflags $cpuflags
4817     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4818 fi
4819
4820 # compiler sanity check
4821 check_exec <<EOF
4822 int main(void){ return 0; }
4823 EOF
4824 if test "$?" != 0; then
4825     echo "$cc is unable to create an executable file."
4826     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4827         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4828         echo "Only do this if you know what cross compiling means."
4829     fi
4830     die "C compiler test failed."
4831 fi
4832
4833 add_cppflags -D_ISOC99_SOURCE
4834 add_cxxflags -D__STDC_CONSTANT_MACROS
4835 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4836
4837 # some compilers silently accept -std=c11, so we also need to check that the
4838 # version macro is defined properly
4839 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4840     add_cflags -std=c11 ||
4841     check_cflags -std=c99
4842
4843 check_cppflags -D_FILE_OFFSET_BITS=64
4844 check_cppflags -D_LARGEFILE_SOURCE
4845
4846 add_host_cppflags -D_ISOC99_SOURCE
4847 check_host_cflags -std=c99
4848 check_host_cflags -Wall
4849 check_host_cflags $host_cflags_speed
4850
4851 check_64bit(){
4852     arch32=$1
4853     arch64=$2
4854     expr=$3
4855     check_code cc "" "int test[2*($expr) - 1]" &&
4856         subarch=$arch64 || subarch=$arch32
4857 }
4858
4859 case "$arch" in
4860     aarch64|alpha|ia64)
4861         spic=$shared
4862     ;;
4863     mips)
4864         check_64bit mips mips64 '_MIPS_SIM > 1'
4865         spic=$shared
4866     ;;
4867     parisc)
4868         check_64bit parisc parisc64 'sizeof(void *) > 4'
4869         spic=$shared
4870     ;;