lavc: Add support for RockChip Media Process Platform
[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 = $value ] && return 0
731     done
732     return 1
733 }
734
735 do_check_deps(){
736     for cfg; do
737         cfg="${cfg#!}"
738         enabled ${cfg}_checking && die "Circular dependency for $cfg."
739         disabled ${cfg}_checking && continue
740         enable ${cfg}_checking
741         append allopts $cfg
742
743         eval dep_all="\$${cfg}_deps"
744         eval dep_any="\$${cfg}_deps_any"
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_sel dep_sgs dep_ifa dep_ifn
751         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
752         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
753
754         [ -n "$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_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
759
760         if enabled $cfg; then
761             enable_deep $dep_sel
762             enable_deep_weak $dep_sgs
763         fi
764
765         disable ${cfg}_checking
766     done
767 }
768
769 check_deps(){
770     unset allopts
771
772     do_check_deps "$@"
773
774     for cfg in $allopts; do
775         enabled $cfg || continue
776         eval dep_extralibs="\$${cfg}_extralibs"
777         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
778     done
779 }
780
781 print_config(){
782     pfx=$1
783     files=$2
784     shift 2
785     map 'eval echo "$v \${$v:-no}"' "$@" |
786     awk "BEGIN { split(\"$files\", files) }
787         {
788             c = \"$pfx\" toupper(\$1);
789             v = \$2;
790             sub(/yes/, 1, v);
791             sub(/no/,  0, v);
792             for (f in files) {
793                 file = files[f];
794                 if (file ~ /\\.h\$/) {
795                     printf(\"#define %s %d\\n\", c, v) >>file;
796                 } else if (file ~ /\\.asm\$/) {
797                     printf(\"%%define %s %d\\n\", c, v) >>file;
798                 } else if (file ~ /\\.mak\$/) {
799                     n = -v ? \"\" : \"!\";
800                     printf(\"%s%s=yes\\n\", n, c) >>file;
801                 } else if (file ~ /\\.texi\$/) {
802                     pre = -v ? \"\" : \"@c \";
803                     yesno = \$2;
804                     c2 = tolower(c);
805                     gsub(/_/, \"-\", c2);
806                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
807                 }
808             }
809         }"
810 }
811
812 print_enabled(){
813     suf=$1
814     shift
815     for v; do
816         enabled $v && printf "%s\n" ${v%$suf}
817     done
818 }
819
820 append(){
821     var=$1
822     shift
823     eval "$var=\"\$$var $*\""
824 }
825
826 prepend(){
827     var=$1
828     shift
829     eval "$var=\"$* \$$var\""
830 }
831
832 unique(){
833     var=$1
834     uniq_list=""
835     for tok in $(eval echo \$$var); do
836         uniq_list="$(filter_out $tok $uniq_list) $tok"
837     done
838     eval "$var=\"${uniq_list}\""
839 }
840
841 add_cppflags(){
842     append CPPFLAGS "$@"
843 }
844
845 add_cflags(){
846     append CFLAGS $($cflags_filter "$@")
847 }
848
849 add_cflags_headers(){
850     append CFLAGS_HEADERS $($cflags_filter "$@")
851 }
852
853 add_cxxflags(){
854     append CXXFLAGS $($cflags_filter "$@")
855 }
856
857 add_asflags(){
858     append ASFLAGS $($asflags_filter "$@")
859 }
860
861 add_objcflags(){
862     append OBJCFLAGS $($objcflags_filter "$@")
863 }
864
865 add_ldflags(){
866     append LDFLAGS $($ldflags_filter "$@")
867 }
868
869 add_ldexeflags(){
870     append LDEXEFLAGS $($ldflags_filter "$@")
871 }
872
873 add_ldlibflags(){
874     append LDLIBFLAGS $($ldflags_filter "$@")
875 }
876
877 add_stripflags(){
878     append ASMSTRIPFLAGS "$@"
879 }
880
881 add_extralibs(){
882     prepend extralibs $($ldflags_filter "$@")
883 }
884
885 add_host_cppflags(){
886     append host_cppflags "$@"
887 }
888
889 add_host_cflags(){
890     append host_cflags $($host_cflags_filter "$@")
891 }
892
893 add_host_ldflags(){
894     append host_ldflags $($host_ldflags_filter "$@")
895 }
896
897 add_compat(){
898     append compat_objs $1
899     shift
900     map 'add_cppflags -D$v' "$@"
901 }
902
903 check_cmd(){
904     log "$@"
905     "$@" >> $logfile 2>&1
906 }
907
908 check_stat(){
909     log check_stat "$@"
910     stat "$1" >> $logfile 2>&1
911 }
912
913 cc_o(){
914     eval printf '%s\\n' $CC_O
915 }
916
917 cc_e(){
918     eval printf '%s\\n' $CC_E
919 }
920
921 check_cc(){
922     log check_cc "$@"
923     cat > $TMPC
924     log_file $TMPC
925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
926 }
927
928 check_cxx(){
929     log check_cxx "$@"
930     cat > $TMPCPP
931     log_file $TMPCPP
932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
933 }
934
935 check_objcc(){
936     log check_objcc "$@"
937     cat > $TMPM
938     log_file $TMPM
939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
940 }
941
942 check_cpp(){
943     log check_cpp "$@"
944     cat > $TMPC
945     log_file $TMPC
946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
947 }
948
949 as_o(){
950     eval printf '%s\\n' $AS_O
951 }
952
953 check_as(){
954     log check_as "$@"
955     cat > $TMPS
956     log_file $TMPS
957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
958 }
959
960 check_inline_asm(){
961     log check_inline_asm "$@"
962     name="$1"
963     code="$2"
964     shift 2
965     disable $name
966     check_cc "$@" <<EOF && enable $name
967 void foo(void){ __asm__ volatile($code); }
968 EOF
969 }
970
971 check_inline_asm_flags(){
972     log check_inline_asm_flags "$@"
973     name="$1"
974     code="$2"
975     flags=''
976     shift 2
977     while [ "$1" != "" ]; do
978       append flags $1
979       shift
980     done;
981     disable $name
982     cat > $TMPC <<EOF
983 void foo(void){ __asm__ volatile($code); }
984 EOF
985     log_file $TMPC
986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
988 }
989
990 check_insn(){
991     log check_insn "$@"
992     check_inline_asm ${1}_inline "\"$2\""
993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
994 }
995
996 check_x86asm(){
997     log check_x86asm "$@"
998     echo "$1" > $TMPS
999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     header=$1
1111     shift
1112     disable_safe $header
1113     check_cpp "$@" <<EOF && enable_safe $header
1114 #include <$header>
1115 int x;
1116 EOF
1117 }
1118
1119 check_header_objcc(){
1120     log check_header_objcc "$@"
1121     rm -f -- "$TMPO"
1122     header=$1
1123     shift
1124     disable_safe $header
1125     {
1126        echo "#include <$header>"
1127        echo "int main(void) { return 0; }"
1128     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1129 }
1130
1131 check_apple_framework(){
1132     log check_apple_framework "$@"
1133     framework="$1"
1134     name="$(tolower $framework)"
1135     header="${framework}/${framework}.h"
1136     disable $name
1137     check_header_objcc $header && enable $name && add_extralibs "-framework $framework"
1138 }
1139
1140 check_func(){
1141     log check_func "$@"
1142     func=$1
1143     shift
1144     disable $func
1145     check_ld "cc" "$@" <<EOF && enable $func
1146 extern int $func();
1147 int main(void){ $func(); }
1148 EOF
1149 }
1150
1151 check_complexfunc(){
1152     log check_complexfunc "$@"
1153     func=$1
1154     narg=$2
1155     shift 2
1156     test $narg = 2 && args="f, g" || args="f * I"
1157     disable $func
1158     check_ld "cc" "$@" <<EOF && enable $func
1159 #include <complex.h>
1160 #include <math.h>
1161 float foo(complex float f, complex float g) { return $func($args); }
1162 int main(void){ return (int) foo; }
1163 EOF
1164 }
1165
1166 check_mathfunc(){
1167     log check_mathfunc "$@"
1168     func=$1
1169     narg=$2
1170     shift 2
1171     test $narg = 2 && args="f, g" || args="f"
1172     disable $func
1173     check_ld "cc" "$@" <<EOF && enable $func
1174 #include <math.h>
1175 float foo(float f, float g) { return $func($args); }
1176 int main(void){ return (int) foo; }
1177 EOF
1178 }
1179
1180 check_func_headers(){
1181     log check_func_headers "$@"
1182     headers=$1
1183     funcs=$2
1184     shift 2
1185     {
1186         for hdr in $headers; do
1187             print_include $hdr
1188         done
1189         echo "#include <stdint.h>"
1190         for func in $funcs; do
1191             echo "long check_$func(void) { return (long) $func; }"
1192         done
1193         echo "int main(void) { int ret = 0;"
1194         # LTO could optimize out the test functions without this
1195         for func in $funcs; do
1196             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1197         done
1198         echo "return ret; }"
1199     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1200 }
1201
1202 check_class_headers_cpp(){
1203     log check_class_headers_cpp "$@"
1204     headers=$1
1205     classes=$2
1206     shift 2
1207     {
1208         for hdr in $headers; do
1209             echo "#include <$hdr>"
1210         done
1211         echo "int main(void) { "
1212         i=1
1213         for class in $classes; do
1214             echo "$class obj$i;"
1215             i=$(expr $i + 1)
1216         done
1217         echo "return 0; }"
1218     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1219 }
1220
1221 check_cpp_condition(){
1222     log check_cpp_condition "$@"
1223     header=$1
1224     condition=$2
1225     shift 2
1226     check_cpp "$@" <<EOF
1227 #include <$header>
1228 #if !($condition)
1229 #error "unsatisfied condition: $condition"
1230 #endif
1231 EOF
1232 }
1233
1234 test_cflags_cc(){
1235     log test_cflags_cc "$@"
1236     flags=$1
1237     header=$2
1238     condition=$3
1239     shift 3
1240     set -- $($cflags_filter "$flags")
1241     check_cc "$@" <<EOF
1242 #include <$header>
1243 #if !($condition)
1244 #error "unsatisfied condition: $condition"
1245 #endif
1246 EOF
1247 }
1248
1249 check_lib(){
1250     log check_lib "$@"
1251     name="$1"
1252     headers="$2"
1253     funcs="$3"
1254     shift 3
1255     disable $name
1256     check_func_headers "$headers" "$funcs" "$@" &&
1257         enable $name && add_extralibs "$@"
1258 }
1259
1260 check_lib_cpp(){
1261     log check_lib_cpp "$@"
1262     headers="$1"
1263     classes="$2"
1264     shift 2
1265     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1266 }
1267
1268 check_pkg_config(){
1269     log check_pkg_config "$@"
1270     pkg_version="$1"
1271     pkg="${1%% *}"
1272     headers="$2"
1273     funcs="$3"
1274     shift 3
1275     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1276     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1277     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1278     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1279         set_safe "${pkg}_cflags"    $pkg_cflags &&
1280         set_safe "${pkg}_extralibs" $pkg_libs
1281 }
1282
1283 check_exec(){
1284     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1285 }
1286
1287 check_exec_crash(){
1288     log check_exec_crash "$@"
1289     code=$(cat)
1290
1291     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1292     # are safe but may not be available everywhere.  Thus we use
1293     # raise(SIGTERM) instead.  The check is run in a subshell so we
1294     # can redirect the "Terminated" message from the shell.  SIGBUS
1295     # is not defined by standard C so it is used conditionally.
1296
1297     (check_exec "$@") >> $logfile 2>&1 <<EOF
1298 #include <signal.h>
1299 static void sighandler(int sig){
1300     raise(SIGTERM);
1301 }
1302 int foo(void){
1303     $code
1304 }
1305 int (*func_ptr)(void) = foo;
1306 int main(void){
1307     signal(SIGILL, sighandler);
1308     signal(SIGFPE, sighandler);
1309     signal(SIGSEGV, sighandler);
1310 #ifdef SIGBUS
1311     signal(SIGBUS, sighandler);
1312 #endif
1313     return func_ptr();
1314 }
1315 EOF
1316 }
1317
1318 check_type(){
1319     log check_type "$@"
1320     headers=$1
1321     type=$2
1322     shift 2
1323     disable_safe "$type"
1324     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1325 }
1326
1327 check_struct(){
1328     log check_struct "$@"
1329     headers=$1
1330     struct=$2
1331     member=$3
1332     shift 3
1333     disable_safe "${struct}_${member}"
1334     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1335         enable_safe "${struct}_${member}"
1336 }
1337
1338 check_builtin(){
1339     log check_builtin "$@"
1340     name=$1
1341     headers=$2
1342     builtin=$3
1343     shift 3
1344     disable "$name"
1345     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1346 }
1347
1348 check_compile_assert(){
1349     log check_compile_assert "$@"
1350     name=$1
1351     headers=$2
1352     condition=$3
1353     shift 3
1354     disable "$name"
1355     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1356 }
1357
1358 require(){
1359     log require "$@"
1360     name_version="$1"
1361     name="${1%% *}"
1362     headers="$2"
1363     func="$3"
1364     shift 3
1365     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1366 }
1367
1368 require_cpp(){
1369     name="$1"
1370     headers="$2"
1371     classes="$3"
1372     shift 3
1373     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1374 }
1375
1376 require_header(){
1377     log require "$@"
1378     header="$1"
1379     shift
1380     check_header "$header" "$@" || die "ERROR: $header header not found"
1381 }
1382
1383 require_cpp_condition(){
1384     log require "$@"
1385     header="$1"
1386     condition="$2"
1387     shift 2
1388     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1389 }
1390
1391 use_pkg_config(){
1392     log use_pkg_config "$@"
1393     name="$1"
1394     shift
1395     pkg_version="$1"
1396     pkg="${1%% *}"
1397     test "$name" = "" && name=$pkg
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     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1405 }
1406
1407 hostcc_e(){
1408     eval printf '%s\\n' $HOSTCC_E
1409 }
1410
1411 hostcc_o(){
1412     eval printf '%s\\n' $HOSTCC_O
1413 }
1414
1415 check_host_cc(){
1416     log check_host_cc "$@"
1417     cat > $TMPC
1418     log_file $TMPC
1419     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1420 }
1421
1422 check_host_cpp(){
1423     log check_host_cpp "$@"
1424     cat > $TMPC
1425     log_file $TMPC
1426     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1427 }
1428
1429 check_host_cppflags(){
1430     log check_host_cppflags "$@"
1431     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1432 #include <stdlib.h>
1433 EOF
1434 }
1435
1436 check_host_cflags(){
1437     log check_host_cflags "$@"
1438     set -- $($host_cflags_filter "$@")
1439     check_host_cc "$@" <<EOF && append host_cflags "$@"
1440 int x;
1441 EOF
1442 }
1443
1444 check_host_cpp_condition(){
1445     log check_host_cpp_condition "$@"
1446     header=$1
1447     condition=$2
1448     shift 2
1449     check_host_cpp "$@" <<EOF
1450 #include <$header>
1451 #if !($condition)
1452 #error "unsatisfied condition: $condition"
1453 #endif
1454 EOF
1455 }
1456
1457 cp_if_changed(){
1458     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1459     mkdir -p "$(dirname $2)"
1460     cp -f "$1" "$2"
1461 }
1462
1463 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1464 # system-dependent things.
1465
1466 AVCODEC_COMPONENTS="
1467     bsfs
1468     decoders
1469     encoders
1470     hwaccels
1471     parsers
1472 "
1473
1474 AVDEVICE_COMPONENTS="
1475     indevs
1476     outdevs
1477 "
1478
1479 AVFILTER_COMPONENTS="
1480     filters
1481 "
1482
1483 AVFORMAT_COMPONENTS="
1484     demuxers
1485     muxers
1486     protocols
1487 "
1488
1489 AVRESAMPLE_COMPONENTS=""
1490
1491 AVUTIL_COMPONENTS=""
1492
1493 COMPONENT_LIST="
1494     $AVCODEC_COMPONENTS
1495     $AVDEVICE_COMPONENTS
1496     $AVFILTER_COMPONENTS
1497     $AVFORMAT_COMPONENTS
1498     $AVRESAMPLE_COMPONENTS
1499     $AVUTIL_COMPONENTS
1500 "
1501
1502 EXAMPLE_LIST="
1503     avio_dir_cmd_example
1504     avio_reading_example
1505     decode_audio_example
1506     decode_video_example
1507     demuxing_decoding_example
1508     encode_audio_example
1509     encode_video_example
1510     extract_mvs_example
1511     filter_audio_example
1512     filtering_audio_example
1513     filtering_video_example
1514     http_multiclient_example
1515     hw_decode_example
1516     metadata_example
1517     muxing_example
1518     qsvdec_example
1519     remuxing_example
1520     resampling_audio_example
1521     scaling_video_example
1522     transcode_aac_example
1523     transcoding_example
1524 "
1525
1526 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1527     alsa
1528     appkit
1529     avfoundation
1530     bzlib
1531     coreimage
1532     iconv
1533     jack
1534     libxcb
1535     libxcb_shm
1536     libxcb_shape
1537     libxcb_xfixes
1538     lzma
1539     schannel
1540     sdl2
1541     securetransport
1542     sndio
1543     xlib
1544     zlib
1545 "
1546
1547 EXTERNAL_LIBRARY_GPL_LIST="
1548     avisynth
1549     frei0r
1550     libcdio
1551     librubberband
1552     libvidstab
1553     libx264
1554     libx265
1555     libxavs
1556     libxvid
1557 "
1558
1559 EXTERNAL_LIBRARY_NONFREE_LIST="
1560     decklink
1561     libndi_newtek
1562     libfdk_aac
1563     openssl
1564 "
1565
1566 EXTERNAL_LIBRARY_VERSION3_LIST="
1567     gmp
1568     libopencore_amrnb
1569     libopencore_amrwb
1570     libvo_amrwbenc
1571     rkmpp
1572 "
1573
1574 EXTERNAL_LIBRARY_GPLV3_LIST="
1575     libsmbclient
1576 "
1577
1578 EXTERNAL_LIBRARY_LIST="
1579     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1580     $EXTERNAL_LIBRARY_GPL_LIST
1581     $EXTERNAL_LIBRARY_NONFREE_LIST
1582     $EXTERNAL_LIBRARY_VERSION3_LIST
1583     $EXTERNAL_LIBRARY_GPLV3_LIST
1584     chromaprint
1585     gcrypt
1586     gnutls
1587     jni
1588     ladspa
1589     libass
1590     libbluray
1591     libbs2b
1592     libcaca
1593     libcelt
1594     libdc1394
1595     libdrm
1596     libflite
1597     libfontconfig
1598     libfreetype
1599     libfribidi
1600     libgme
1601     libgsm
1602     libiec61883
1603     libilbc
1604     libkvazaar
1605     libmodplug
1606     libmp3lame
1607     libmysofa
1608     libopencv
1609     libopenh264
1610     libopenjpeg
1611     libopenmpt
1612     libopus
1613     libpulse
1614     librsvg
1615     librtmp
1616     libshine
1617     libsmbclient
1618     libsnappy
1619     libsoxr
1620     libspeex
1621     libssh
1622     libtesseract
1623     libtheora
1624     libtwolame
1625     libv4l2
1626     libvmaf
1627     libvorbis
1628     libvpx
1629     libwavpack
1630     libwebp
1631     libxml2
1632     libzimg
1633     libzmq
1634     libzvbi
1635     mediacodec
1636     openal
1637     opencl
1638     opengl
1639 "
1640
1641 HWACCEL_AUTODETECT_LIBRARY_LIST="
1642     audiotoolbox
1643     crystalhd
1644     cuda
1645     cuvid
1646     d3d11va
1647     dxva2
1648     nvenc
1649     vaapi
1650     vda
1651     vdpau
1652     videotoolbox
1653     v4l2_m2m
1654     xvmc
1655 "
1656
1657 HWACCEL_LIBRARY_NONFREE_LIST="
1658     cuda_sdk
1659     libnpp
1660 "
1661
1662 HWACCEL_LIBRARY_LIST="
1663     $HWACCEL_AUTODETECT_LIBRARY_LIST
1664     $HWACCEL_LIBRARY_NONFREE_LIST
1665     libmfx
1666     mmal
1667     omx
1668 "
1669
1670 DOCUMENT_LIST="
1671     doc
1672     htmlpages
1673     manpages
1674     podpages
1675     txtpages
1676 "
1677
1678 FEATURE_LIST="
1679     ftrapv
1680     gray
1681     hardcoded_tables
1682     omx_rpi
1683     runtime_cpudetect
1684     safe_bitstream_reader
1685     shared
1686     small
1687     static
1688     swscale_alpha
1689 "
1690
1691 LIBRARY_LIST="
1692     avcodec
1693     avdevice
1694     avfilter
1695     avformat
1696     avresample
1697     avutil
1698     postproc
1699     swresample
1700     swscale
1701 "
1702
1703 LICENSE_LIST="
1704     gpl
1705     nonfree
1706     version3
1707 "
1708
1709 PROGRAM_LIST="
1710     ffplay
1711     ffprobe
1712     ffserver
1713     ffmpeg
1714 "
1715
1716 SUBSYSTEM_LIST="
1717     dct
1718     dwt
1719     error_resilience
1720     faan
1721     fast_unaligned
1722     fft
1723     lsp
1724     lzo
1725     mdct
1726     pixelutils
1727     network
1728     rdft
1729 "
1730
1731 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1732 CONFIG_LIST="
1733     $DOCUMENT_LIST
1734     $EXAMPLE_LIST
1735     $EXTERNAL_LIBRARY_LIST
1736     $HWACCEL_LIBRARY_LIST
1737     $FEATURE_LIST
1738     $LICENSE_LIST
1739     $LIBRARY_LIST
1740     $PROGRAM_LIST
1741     $SUBSYSTEM_LIST
1742     autodetect
1743     fontconfig
1744     linux_perf
1745     memory_poisoning
1746     neon_clobber_test
1747     ossfuzz
1748     pic
1749     thumb
1750     valgrind_backtrace
1751     xmm_clobber_test
1752     $COMPONENT_LIST
1753 "
1754
1755 THREADS_LIST="
1756     pthreads
1757     os2threads
1758     w32threads
1759 "
1760
1761 ATOMICS_LIST="
1762     atomics_gcc
1763     atomics_suncc
1764     atomics_win32
1765 "
1766
1767 AUTODETECT_LIBS="
1768     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1769     $HWACCEL_AUTODETECT_LIBRARY_LIST
1770     $THREADS_LIST
1771 "
1772
1773 ARCH_LIST="
1774     aarch64
1775     alpha
1776     arm
1777     avr32
1778     avr32_ap
1779     avr32_uc
1780     bfin
1781     ia64
1782     m68k
1783     mips
1784     mips64
1785     parisc
1786     ppc
1787     ppc64
1788     s390
1789     sh4
1790     sparc
1791     sparc64
1792     tilegx
1793     tilepro
1794     tomi
1795     x86
1796     x86_32
1797     x86_64
1798 "
1799
1800 ARCH_EXT_LIST_ARM="
1801     armv5te
1802     armv6
1803     armv6t2
1804     armv8
1805     neon
1806     vfp
1807     vfpv3
1808     setend
1809 "
1810
1811 ARCH_EXT_LIST_MIPS="
1812     mipsfpu
1813     mips32r2
1814     mips32r5
1815     mips64r2
1816     mips32r6
1817     mips64r6
1818     mipsdsp
1819     mipsdspr2
1820     msa
1821 "
1822
1823 ARCH_EXT_LIST_LOONGSON="
1824     loongson2
1825     loongson3
1826     mmi
1827 "
1828
1829 ARCH_EXT_LIST_X86_SIMD="
1830     aesni
1831     amd3dnow
1832     amd3dnowext
1833     avx
1834     avx2
1835     fma3
1836     fma4
1837     mmx
1838     mmxext
1839     sse
1840     sse2
1841     sse3
1842     sse4
1843     sse42
1844     ssse3
1845     xop
1846 "
1847
1848 ARCH_EXT_LIST_PPC="
1849     altivec
1850     dcbzl
1851     ldbrx
1852     power8
1853     ppc4xx
1854     vsx
1855 "
1856
1857 ARCH_EXT_LIST_X86="
1858     $ARCH_EXT_LIST_X86_SIMD
1859     cpunop
1860     i686
1861 "
1862
1863 ARCH_EXT_LIST="
1864     $ARCH_EXT_LIST_ARM
1865     $ARCH_EXT_LIST_PPC
1866     $ARCH_EXT_LIST_X86
1867     $ARCH_EXT_LIST_MIPS
1868     $ARCH_EXT_LIST_LOONGSON
1869 "
1870
1871 ARCH_FEATURES="
1872     aligned_stack
1873     fast_64bit
1874     fast_clz
1875     fast_cmov
1876     local_aligned_8
1877     local_aligned_16
1878     local_aligned_32
1879     simd_align_16
1880     simd_align_32
1881 "
1882
1883 BUILTIN_LIST="
1884     atomic_cas_ptr
1885     machine_rw_barrier
1886     MemoryBarrier
1887     mm_empty
1888     rdtsc
1889     sarestart
1890     sem_timedwait
1891     sync_val_compare_and_swap
1892 "
1893 HAVE_LIST_CMDLINE="
1894     inline_asm
1895     symver
1896     x86asm
1897 "
1898
1899 HAVE_LIST_PUB="
1900     bigendian
1901     fast_unaligned
1902 "
1903
1904 HEADERS_LIST="
1905     altivec_h
1906     arpa_inet_h
1907     asm_types_h
1908     cdio_paranoia_h
1909     cdio_paranoia_paranoia_h
1910     cuda_h
1911     d3d11_h
1912     dispatch_dispatch_h
1913     dev_bktr_ioctl_bt848_h
1914     dev_bktr_ioctl_meteor_h
1915     dev_ic_bt8xx_h
1916     dev_video_bktr_ioctl_bt848_h
1917     dev_video_meteor_ioctl_meteor_h
1918     direct_h
1919     dirent_h
1920     dlfcn_h
1921     dxgidebug_h
1922     dxva_h
1923     ES2_gl_h
1924     gsm_h
1925     io_h
1926     mach_mach_time_h
1927     machine_ioctl_bt848_h
1928     machine_ioctl_meteor_h
1929     malloc_h
1930     opencv2_core_core_c_h
1931     openjpeg_2_2_openjpeg_h
1932     openjpeg_2_1_openjpeg_h
1933     openjpeg_2_0_openjpeg_h
1934     openjpeg_1_5_openjpeg_h
1935     OpenGL_gl3_h
1936     poll_h
1937     soundcard_h
1938     stdatomic_h
1939     sys_mman_h
1940     sys_param_h
1941     sys_resource_h
1942     sys_select_h
1943     sys_soundcard_h
1944     sys_time_h
1945     sys_un_h
1946     sys_videoio_h
1947     termios_h
1948     udplite_h
1949     unistd_h
1950     valgrind_valgrind_h
1951     windows_h
1952     winsock2_h
1953 "
1954
1955 INTRINSICS_LIST="
1956     intrinsics_neon
1957 "
1958
1959 COMPLEX_FUNCS="
1960     cabs
1961     cexp
1962 "
1963
1964 MATH_FUNCS="
1965     atanf
1966     atan2f
1967     cbrt
1968     cbrtf
1969     copysign
1970     cosf
1971     erf
1972     exp2
1973     exp2f
1974     expf
1975     hypot
1976     isfinite
1977     isinf
1978     isnan
1979     ldexpf
1980     llrint
1981     llrintf
1982     log2
1983     log2f
1984     log10f
1985     lrint
1986     lrintf
1987     powf
1988     rint
1989     round
1990     roundf
1991     sinf
1992     trunc
1993     truncf
1994 "
1995
1996 SYSTEM_FUNCS="
1997     access
1998     aligned_malloc
1999     arc4random
2000     clock_gettime
2001     closesocket
2002     CommandLineToArgvW
2003     CoTaskMemFree
2004     CryptGenRandom
2005     dlopen
2006     fcntl
2007     flt_lim
2008     fork
2009     getaddrinfo
2010     gethrtime
2011     getopt
2012     GetProcessAffinityMask
2013     GetProcessMemoryInfo
2014     GetProcessTimes
2015     getrusage
2016     GetSystemTimeAsFileTime
2017     gettimeofday
2018     glob
2019     glXGetProcAddress
2020     gmtime_r
2021     inet_aton
2022     isatty
2023     jack_port_get_latency_range
2024     kbhit
2025     LoadLibrary
2026     localtime_r
2027     lstat
2028     lzo1x_999_compress
2029     mach_absolute_time
2030     MapViewOfFile
2031     memalign
2032     mkstemp
2033     mmap
2034     mprotect
2035     nanosleep
2036     PeekNamedPipe
2037     posix_memalign
2038     pthread_cancel
2039     sched_getaffinity
2040     SetConsoleTextAttribute
2041     SetConsoleCtrlHandler
2042     setmode
2043     setrlimit
2044     Sleep
2045     strerror_r
2046     sysconf
2047     sysctl
2048     usleep
2049     UTGetOSTypeFromString
2050     VirtualAlloc
2051     wglGetProcAddress
2052 "
2053
2054 TOOLCHAIN_FEATURES="
2055     as_dn_directive
2056     as_fpu_directive
2057     as_func
2058     as_object_arch
2059     asm_mod_q
2060     attribute_may_alias
2061     attribute_packed
2062     blocks_extension
2063     ebp_available
2064     ebx_available
2065     gnu_as
2066     gnu_windres
2067     ibm_asm
2068     inline_asm_direct_symbol_refs
2069     inline_asm_labels
2070     inline_asm_nonlocal_labels
2071     pragma_deprecated
2072     rsync_contimeout
2073     symver_asm_label
2074     symver_gnu_asm
2075     vfp_args
2076     xform_asm
2077     xmm_clobbers
2078 "
2079
2080 TYPES_LIST="
2081     CONDITION_VARIABLE_Ptr
2082     socklen_t
2083     struct_addrinfo
2084     struct_group_source_req
2085     struct_ip_mreq_source
2086     struct_ipv6_mreq
2087     struct_msghdr_msg_flags
2088     struct_pollfd
2089     struct_rusage_ru_maxrss
2090     struct_sctp_event_subscribe
2091     struct_sockaddr_in6
2092     struct_sockaddr_sa_len
2093     struct_sockaddr_storage
2094     struct_stat_st_mtim_tv_nsec
2095     struct_v4l2_frmivalenum_discrete
2096 "
2097
2098 HAVE_LIST="
2099     $ARCH_EXT_LIST
2100     $(add_suffix _external $ARCH_EXT_LIST)
2101     $(add_suffix _inline   $ARCH_EXT_LIST)
2102     $ARCH_FEATURES
2103     $ATOMICS_LIST
2104     $BUILTIN_LIST
2105     $COMPLEX_FUNCS
2106     $HAVE_LIST_CMDLINE
2107     $HAVE_LIST_PUB
2108     $HEADERS_LIST
2109     $INTRINSICS_LIST
2110     $MATH_FUNCS
2111     $SYSTEM_FUNCS
2112     $THREADS_LIST
2113     $TOOLCHAIN_FEATURES
2114     $TYPES_LIST
2115     atomics_native
2116     dos_paths
2117     libc_msvcrt
2118     makeinfo
2119     makeinfo_html
2120     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2121     perl
2122     pod2man
2123     section_data_rel_ro
2124     texi2html
2125     threads
2126     uwp
2127     vaapi_drm
2128     vaapi_x11
2129     vdpau_x11
2130     winrt
2131 "
2132
2133 # options emitted with CONFIG_ prefix but not available on the command line
2134 CONFIG_EXTRA="
2135     aandcttables
2136     ac3dsp
2137     audio_frame_queue
2138     audiodsp
2139     blockdsp
2140     bswapdsp
2141     cabac
2142     dirac_parse
2143     dvprofile
2144     exif
2145     faandct
2146     faanidct
2147     fdctdsp
2148     flacdsp
2149     fmtconvert
2150     frame_thread_encoder
2151     g722dsp
2152     golomb
2153     gplv3
2154     h263dsp
2155     h264chroma
2156     h264dsp
2157     h264parse
2158     h264pred
2159     h264qpel
2160     hevcparse
2161     hpeldsp
2162     huffman
2163     huffyuvdsp
2164     huffyuvencdsp
2165     idctdsp
2166     iirfilter
2167     mdct15
2168     intrax8
2169     iso_media
2170     ividsp
2171     jpegtables
2172     lgplv3
2173     libx262
2174     llauddsp
2175     llviddsp
2176     llvidencdsp
2177     lpc
2178     lzf
2179     me_cmp
2180     mpeg_er
2181     mpegaudio
2182     mpegaudiodsp
2183     mpegaudioheader
2184     mpegvideo
2185     mpegvideoenc
2186     mss34dsp
2187     pixblockdsp
2188     qpeldsp
2189     qsv
2190     qsvdec
2191     qsvenc
2192     rangecoder
2193     riffdec
2194     riffenc
2195     rtpdec
2196     rtpenc_chain
2197     rv34dsp
2198     sinewin
2199     snappy
2200     srtp
2201     startcode
2202     texturedsp
2203     texturedspenc
2204     tpeldsp
2205     vaapi_encode
2206     vc1dsp
2207     videodsp
2208     vp3dsp
2209     vp56dsp
2210     vp8dsp
2211     wma_freqs
2212     wmv2dsp
2213 "
2214
2215 CMDLINE_SELECT="
2216     $ARCH_EXT_LIST
2217     $CONFIG_LIST
2218     $HAVE_LIST_CMDLINE
2219     $THREADS_LIST
2220     asm
2221     cross_compile
2222     debug
2223     extra_warnings
2224     logging
2225     lto
2226     optimizations
2227     rpath
2228     stripping
2229 "
2230
2231 PATHS_LIST="
2232     bindir
2233     datadir
2234     docdir
2235     incdir
2236     libdir
2237     mandir
2238     pkgconfigdir
2239     prefix
2240     shlibdir
2241     install_name_dir
2242 "
2243
2244 CMDLINE_SET="
2245     $PATHS_LIST
2246     ar
2247     arch
2248     as
2249     assert_level
2250     build_suffix
2251     cc
2252     objcc
2253     cpu
2254     cross_prefix
2255     custom_allocator
2256     cxx
2257     dep_cc
2258     doxygen
2259     env
2260     extra_version
2261     gas
2262     host_cc
2263     host_cflags
2264     host_extralibs
2265     host_ld
2266     host_ldflags
2267     host_os
2268     ignore_tests
2269     install
2270     ld
2271     ln_s
2272     logfile
2273     malloc_prefix
2274     nm
2275     optflags
2276     nvccflags
2277     pkg_config
2278     pkg_config_flags
2279     progs_suffix
2280     random_seed
2281     ranlib
2282     samples
2283     strip
2284     sws_max_filter_size
2285     sysinclude
2286     sysroot
2287     target_exec
2288     target_os
2289     target_path
2290     target_samples
2291     tempprefix
2292     toolchain
2293     valgrind
2294     x86asmexe
2295 "
2296
2297 CMDLINE_APPEND="
2298     extra_cflags
2299     extra_cxxflags
2300     extra_objcflags
2301     host_cppflags
2302 "
2303
2304 # code dependency declarations
2305
2306 # architecture extensions
2307
2308 armv5te_deps="arm"
2309 armv6_deps="arm"
2310 armv6t2_deps="arm"
2311 armv8_deps="aarch64"
2312 neon_deps_any="aarch64 arm"
2313 intrinsics_neon_deps="neon"
2314 vfp_deps_any="aarch64 arm"
2315 vfpv3_deps="vfp"
2316 setend_deps="arm"
2317
2318 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2319
2320 loongson2_deps="mips"
2321 loongson3_deps="mips"
2322 mipsfpu_deps="mips"
2323 mipsdsp_deps="mips"
2324 mipsdspr2_deps="mips"
2325 mips32r2_deps="mips"
2326 mips32r5_deps="mips"
2327 mips32r6_deps="mips"
2328 mips64r2_deps="mips"
2329 mips64r6_deps="mips"
2330 msa_deps="mipsfpu"
2331 mmi_deps="mips"
2332
2333 altivec_deps="ppc"
2334 dcbzl_deps="ppc"
2335 ldbrx_deps="ppc"
2336 ppc4xx_deps="ppc"
2337 vsx_deps="altivec"
2338 power8_deps="vsx"
2339
2340 cpunop_deps="i686"
2341 x86_64_select="i686"
2342 x86_64_suggest="fast_cmov"
2343
2344 amd3dnow_deps="mmx"
2345 amd3dnowext_deps="amd3dnow"
2346 i686_deps="x86"
2347 mmx_deps="x86"
2348 mmxext_deps="mmx"
2349 sse_deps="mmxext"
2350 sse2_deps="sse"
2351 sse3_deps="sse2"
2352 ssse3_deps="sse3"
2353 sse4_deps="ssse3"
2354 sse42_deps="sse4"
2355 aesni_deps="sse42"
2356 avx_deps="sse42"
2357 xop_deps="avx"
2358 fma3_deps="avx"
2359 fma4_deps="avx"
2360 avx2_deps="avx"
2361
2362 mmx_external_deps="x86asm"
2363 mmx_inline_deps="inline_asm"
2364 mmx_suggest="mmx_external mmx_inline"
2365
2366 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2367     eval dep=\$${ext}_deps
2368     eval ${ext}_external_deps='"${dep}_external"'
2369     eval ${ext}_inline_deps='"${dep}_inline"'
2370     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2371 done
2372
2373 aligned_stack_if_any="aarch64 ppc x86"
2374 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2375 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2376 fast_unaligned_if_any="aarch64 ppc x86"
2377 simd_align_16_if_any="altivec neon sse"
2378 simd_align_32_if_any="avx"
2379
2380 # system capabilities
2381 symver_if_any="symver_asm_label symver_gnu_asm"
2382 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2383
2384 # threading support
2385 atomics_gcc_if="sync_val_compare_and_swap"
2386 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2387 atomics_win32_if="MemoryBarrier"
2388 atomics_native_if_any="$ATOMICS_LIST"
2389 w32threads_deps="atomics_native"
2390 threads_if_any="$THREADS_LIST"
2391
2392 # subsystems
2393 dct_select="rdft"
2394 dirac_parse_select="golomb"
2395 error_resilience_select="me_cmp"
2396 faandct_deps="faan fdctdsp"
2397 faanidct_deps="faan idctdsp"
2398 h264dsp_select="startcode"
2399 hevcparse_select="golomb"
2400 frame_thread_encoder_deps="encoders threads"
2401 intrax8_select="blockdsp idctdsp"
2402 mdct_select="fft"
2403 mdct15_select="fft"
2404 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2405 mpeg_er_select="error_resilience"
2406 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2407 mpegaudiodsp_select="dct"
2408 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2409 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2410 vc1dsp_select="h264chroma qpeldsp startcode"
2411 rdft_select="fft"
2412
2413 # decoders / encoders
2414 aac_decoder_select="mdct15 mdct sinewin"
2415 aac_fixed_decoder_select="mdct sinewin"
2416 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2417 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2418 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2419 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2420 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2421 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2422 adpcm_g722_decoder_select="g722dsp"
2423 adpcm_g722_encoder_select="g722dsp"
2424 aic_decoder_select="golomb idctdsp"
2425 alac_encoder_select="lpc"
2426 als_decoder_select="bswapdsp"
2427 amrnb_decoder_select="lsp"
2428 amrwb_decoder_select="lsp"
2429 amv_decoder_select="sp5x_decoder exif"
2430 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2431 ape_decoder_select="bswapdsp llauddsp"
2432 apng_decoder_select="zlib"
2433 apng_encoder_select="llvidencdsp zlib"
2434 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2435 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2436 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2437 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2438 atrac1_decoder_select="mdct sinewin"
2439 atrac3_decoder_select="mdct"
2440 atrac3p_decoder_select="mdct sinewin"
2441 avrn_decoder_select="exif jpegtables"
2442 bink_decoder_select="blockdsp hpeldsp"
2443 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2444 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2445 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2446 clearvideo_decoder_select="idctdsp"
2447 cllc_decoder_select="bswapdsp"
2448 comfortnoise_encoder_select="lpc"
2449 cook_decoder_select="audiodsp mdct sinewin"
2450 cscd_decoder_select="lzo"
2451 cscd_decoder_suggest="zlib"
2452 dca_decoder_select="mdct"
2453 dds_decoder_select="texturedsp"
2454 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2455 dnxhd_decoder_select="blockdsp idctdsp"
2456 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2457 dolby_e_decoder_select="mdct"
2458 dvvideo_decoder_select="dvprofile idctdsp"
2459 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2460 dxa_decoder_select="zlib"
2461 dxv_decoder_select="lzf texturedsp"
2462 eac3_decoder_select="ac3_decoder"
2463 eac3_encoder_select="ac3_encoder"
2464 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2465 eatgq_decoder_select="aandcttables"
2466 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2467 exr_decoder_select="zlib"
2468 ffv1_decoder_select="rangecoder"
2469 ffv1_encoder_select="rangecoder"
2470 ffvhuff_decoder_select="huffyuv_decoder"
2471 ffvhuff_encoder_select="huffyuv_encoder"
2472 fic_decoder_select="golomb"
2473 flac_decoder_select="flacdsp"
2474 flac_encoder_select="bswapdsp flacdsp lpc"
2475 flashsv2_decoder_select="zlib"
2476 flashsv2_encoder_select="zlib"
2477 flashsv_decoder_select="zlib"
2478 flashsv_encoder_select="zlib"
2479 flv_decoder_select="h263_decoder"
2480 flv_encoder_select="h263_encoder"
2481 fourxm_decoder_select="blockdsp bswapdsp"
2482 fraps_decoder_select="bswapdsp huffman"
2483 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2484 g729_decoder_select="audiodsp"
2485 h261_decoder_select="mpegvideo"
2486 h261_encoder_select="aandcttables mpegvideoenc"
2487 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2488 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2489 h263i_decoder_select="h263_decoder"
2490 h263p_decoder_select="h263_decoder"
2491 h263p_encoder_select="h263_encoder"
2492 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2493 h264_decoder_suggest="error_resilience"
2494 hap_decoder_select="snappy texturedsp"
2495 hap_encoder_deps="libsnappy"
2496 hap_encoder_select="texturedspenc"
2497 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2498 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2499 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2500 iac_decoder_select="imc_decoder"
2501 imc_decoder_select="bswapdsp fft mdct sinewin"
2502 indeo3_decoder_select="hpeldsp"
2503 indeo4_decoder_select="ividsp"
2504 indeo5_decoder_select="ividsp"
2505 interplay_video_decoder_select="hpeldsp"
2506 jpegls_decoder_select="mjpeg_decoder"
2507 jv_decoder_select="blockdsp"
2508 lagarith_decoder_select="llviddsp"
2509 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2510 magicyuv_decoder_select="llviddsp"
2511 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2512 metasound_decoder_select="lsp mdct sinewin"
2513 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2514 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2515 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2516 mjpegb_decoder_select="mjpeg_decoder"
2517 mlp_decoder_select="mlp_parser"
2518 mlp_encoder_select="lpc"
2519 motionpixels_decoder_select="bswapdsp"
2520 mp1_decoder_select="mpegaudio"
2521 mp1float_decoder_select="mpegaudio"
2522 mp2_decoder_select="mpegaudio"
2523 mp2float_decoder_select="mpegaudio"
2524 mp3_decoder_select="mpegaudio"
2525 mp3adu_decoder_select="mpegaudio"
2526 mp3adufloat_decoder_select="mpegaudio"
2527 mp3float_decoder_select="mpegaudio"
2528 mp3on4_decoder_select="mpegaudio"
2529 mp3on4float_decoder_select="mpegaudio"
2530 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2531 mpc8_decoder_select="mpegaudiodsp"
2532 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2533 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2534 mpegvideo_decoder_select="mpegvideo"
2535 mpeg1video_decoder_select="mpegvideo"
2536 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2537 mpeg2video_decoder_select="mpegvideo"
2538 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2539 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2540 mpeg4_encoder_select="h263_encoder"
2541 msa1_decoder_select="mss34dsp"
2542 mscc_decoder_select="zlib"
2543 msmpeg4v1_decoder_select="h263_decoder"
2544 msmpeg4v2_decoder_select="h263_decoder"
2545 msmpeg4v2_encoder_select="h263_encoder"
2546 msmpeg4v3_decoder_select="h263_decoder"
2547 msmpeg4v3_encoder_select="h263_encoder"
2548 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2549 mts2_decoder_select="mss34dsp"
2550 mxpeg_decoder_select="mjpeg_decoder"
2551 nellymoser_decoder_select="mdct sinewin"
2552 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2553 nuv_decoder_select="idctdsp lzo"
2554 on2avc_decoder_select="mdct"
2555 opus_decoder_deps="swresample"
2556 opus_decoder_select="mdct15"
2557 opus_encoder_select="audio_frame_queue mdct15"
2558 png_decoder_select="zlib"
2559 png_encoder_select="llvidencdsp zlib"
2560 prores_decoder_select="blockdsp idctdsp"
2561 prores_encoder_select="fdctdsp"
2562 qcelp_decoder_select="lsp"
2563 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2564 ra_144_decoder_select="audiodsp"
2565 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2566 ralf_decoder_select="golomb"
2567 rawvideo_decoder_select="bswapdsp"
2568 rscc_decoder_select="zlib"
2569 rtjpeg_decoder_select="me_cmp"
2570 rv10_decoder_select="h263_decoder"
2571 rv10_encoder_select="h263_encoder"
2572 rv20_decoder_select="h263_decoder"
2573 rv20_encoder_select="h263_encoder"
2574 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2575 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2576 screenpresso_decoder_select="zlib"
2577 shorten_decoder_select="bswapdsp"
2578 sipr_decoder_select="lsp"
2579 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2580 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2581 sonic_decoder_select="golomb rangecoder"
2582 sonic_encoder_select="golomb rangecoder"
2583 sonic_ls_encoder_select="golomb rangecoder"
2584 sp5x_decoder_select="mjpeg_decoder"
2585 srgc_decoder_select="zlib"
2586 svq1_decoder_select="hpeldsp"
2587 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2588 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2589 svq3_decoder_suggest="zlib"
2590 tak_decoder_select="audiodsp"
2591 tdsc_decoder_select="zlib mjpeg_decoder"
2592 theora_decoder_select="vp3_decoder"
2593 thp_decoder_select="mjpeg_decoder"
2594 tiff_decoder_suggest="zlib lzma"
2595 tiff_encoder_suggest="zlib"
2596 truehd_decoder_select="mlp_parser"
2597 truehd_encoder_select="lpc"
2598 truemotion2_decoder_select="bswapdsp"
2599 truespeech_decoder_select="bswapdsp"
2600 tscc_decoder_select="zlib"
2601 twinvq_decoder_select="mdct lsp sinewin"
2602 txd_decoder_select="texturedsp"
2603 utvideo_decoder_select="bswapdsp llviddsp"
2604 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2605 vble_decoder_select="llviddsp"
2606 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2607 vc1_qsv_decoder_deps="libmfx"
2608 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2609 vc1image_decoder_select="vc1_decoder"
2610 vorbis_decoder_select="mdct"
2611 vorbis_encoder_select="mdct"
2612 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2613 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2614 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2615 vp6a_decoder_select="vp6_decoder"
2616 vp6f_decoder_select="vp6_decoder"
2617 vp7_decoder_select="h264pred videodsp vp8dsp"
2618 vp8_decoder_select="h264pred videodsp vp8dsp"
2619 vp9_decoder_select="videodsp vp9_parser"
2620 webp_decoder_select="vp8_decoder exif"
2621 wmalossless_decoder_select="llauddsp"
2622 wmapro_decoder_select="mdct sinewin wma_freqs"
2623 wmav1_decoder_select="mdct sinewin wma_freqs"
2624 wmav1_encoder_select="mdct sinewin wma_freqs"
2625 wmav2_decoder_select="mdct sinewin wma_freqs"
2626 wmav2_encoder_select="mdct sinewin wma_freqs"
2627 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2628 wmv1_decoder_select="h263_decoder"
2629 wmv1_encoder_select="h263_encoder"
2630 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2631 wmv2_encoder_select="h263_encoder wmv2dsp"
2632 wmv3_decoder_select="vc1_decoder"
2633 wmv3image_decoder_select="wmv3_decoder"
2634 xma1_decoder_select="wmapro_decoder"
2635 xma2_decoder_select="wmapro_decoder"
2636 zerocodec_decoder_select="zlib"
2637 zlib_decoder_select="zlib"
2638 zlib_encoder_select="zlib"
2639 zmbv_decoder_select="zlib"
2640 zmbv_encoder_select="zlib"
2641
2642 # hardware accelerators
2643 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2644 cuda_deps_any="dlopen LoadLibrary"
2645 cuvid_deps="cuda"
2646 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2647 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2648 dxva2_extralibs="-luser32"
2649 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2650 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2651 vda_deps="vda_framework pthreads"
2652 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2653 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2654 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2655 xvmc_deps="X11_extensions_XvMClib_h"
2656
2657 h263_vaapi_hwaccel_deps="vaapi"
2658 h263_vaapi_hwaccel_select="h263_decoder"
2659 h263_videotoolbox_hwaccel_deps="videotoolbox"
2660 h263_videotoolbox_hwaccel_select="h263_decoder"
2661 h264_cuvid_hwaccel_deps="cuda cuvid"
2662 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2663 h264_d3d11va_hwaccel_deps="d3d11va"
2664 h264_d3d11va_hwaccel_select="h264_decoder"
2665 h264_d3d11va2_hwaccel_deps="d3d11va"
2666 h264_d3d11va2_hwaccel_select="h264_decoder"
2667 h264_dxva2_hwaccel_deps="dxva2"
2668 h264_dxva2_hwaccel_select="h264_decoder"
2669 h264_mediacodec_hwaccel_deps="mediacodec"
2670 h264_mmal_hwaccel_deps="mmal"
2671 h264_qsv_hwaccel_deps="libmfx"
2672 h264_vaapi_hwaccel_deps="vaapi"
2673 h264_vaapi_hwaccel_select="h264_decoder"
2674 h264_vda_hwaccel_deps="vda"
2675 h264_vda_hwaccel_select="h264_decoder"
2676 h264_vda_old_hwaccel_deps="vda"
2677 h264_vda_old_hwaccel_select="h264_decoder"
2678 h264_vdpau_hwaccel_deps="vdpau"
2679 h264_vdpau_hwaccel_select="h264_decoder"
2680 h264_videotoolbox_hwaccel_deps="videotoolbox"
2681 h264_videotoolbox_hwaccel_select="h264_decoder"
2682 hevc_cuvid_hwaccel_deps="cuda cuvid"
2683 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2684 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2685 hevc_d3d11va_hwaccel_select="hevc_decoder"
2686 hevc_mediacodec_hwaccel_deps="mediacodec"
2687 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2688 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2689 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2690 hevc_dxva2_hwaccel_select="hevc_decoder"
2691 hevc_qsv_hwaccel_deps="libmfx"
2692 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2693 hevc_vaapi_hwaccel_select="hevc_decoder"
2694 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2695 hevc_vdpau_hwaccel_select="hevc_decoder"
2696 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2697 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2698 mpeg_xvmc_hwaccel_deps="xvmc"
2699 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2700 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2701 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2702 mpeg1_vdpau_hwaccel_deps="vdpau"
2703 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2704 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2705 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2706 mpeg1_xvmc_hwaccel_deps="xvmc"
2707 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2708 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2709 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2710 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2711 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2712 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2713 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2714 mpeg2_dxva2_hwaccel_deps="dxva2"
2715 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2716 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2717 mpeg2_mmal_hwaccel_deps="mmal"
2718 mpeg2_qsv_hwaccel_deps="libmfx"
2719 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2720 mpeg2_vaapi_hwaccel_deps="vaapi"
2721 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2722 mpeg2_vdpau_hwaccel_deps="vdpau"
2723 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2724 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2725 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_xvmc_hwaccel_deps="xvmc"
2727 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2728 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2729 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2730 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2731 mpeg4_mmal_hwaccel_deps="mmal"
2732 mpeg4_vaapi_hwaccel_deps="vaapi"
2733 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2734 mpeg4_vdpau_hwaccel_deps="vdpau"
2735 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2736 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2737 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2738 vc1_cuvid_hwaccel_deps="cuda cuvid"
2739 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2740 vc1_d3d11va_hwaccel_deps="d3d11va"
2741 vc1_d3d11va_hwaccel_select="vc1_decoder"
2742 vc1_d3d11va2_hwaccel_deps="d3d11va"
2743 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2744 vc1_dxva2_hwaccel_deps="dxva2"
2745 vc1_dxva2_hwaccel_select="vc1_decoder"
2746 vc1_mmal_hwaccel_deps="mmal"
2747 vc1_qsv_hwaccel_deps="libmfx"
2748 vc1_qsv_hwaccel_select="qsvdec_vc1"
2749 vc1_vaapi_hwaccel_deps="vaapi"
2750 vc1_vaapi_hwaccel_select="vc1_decoder"
2751 vc1_vdpau_hwaccel_deps="vdpau"
2752 vc1_vdpau_hwaccel_select="vc1_decoder"
2753 vp8_cuvid_hwaccel_deps="cuda cuvid"
2754 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2755 vp9_cuvid_hwaccel_deps="cuda cuvid"
2756 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2757 vp8_mediacodec_hwaccel_deps="mediacodec"
2758 vp8_qsv_hwaccel_deps="libmfx"
2759 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2760 vp9_d3d11va_hwaccel_select="vp9_decoder"
2761 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2762 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2763 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2764 vp9_dxva2_hwaccel_select="vp9_decoder"
2765 vp9_mediacodec_hwaccel_deps="mediacodec"
2766 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2767 vp9_vaapi_hwaccel_select="vp9_decoder"
2768 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2769 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2770 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2771 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2772 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2773
2774 # hardware-accelerated codecs
2775 omx_deps="dlopen pthreads"
2776 omx_extralibs='$ldl'
2777 omx_rpi_select="omx"
2778 qsvdec_select="qsv"
2779 qsvenc_select="qsv"
2780 vaapi_encode_deps="vaapi"
2781 v4l2_m2m_deps_any="linux_videodev2_h"
2782
2783 hwupload_cuda_filter_deps="cuda"
2784 scale_npp_filter_deps="cuda libnpp"
2785 scale_cuda_filter_deps="cuda_sdk"
2786 thumbnail_cuda_filter_deps="cuda_sdk"
2787
2788 nvenc_deps="cuda"
2789 nvenc_deps_any="dlopen LoadLibrary"
2790 nvenc_encoder_deps="nvenc"
2791
2792 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2793 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2794 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2795 h264_cuvid_decoder_deps="cuda cuvid"
2796 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2797 h264_mediacodec_decoder_deps="mediacodec"
2798 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2799 h264_mmal_decoder_deps="mmal"
2800 h264_nvenc_encoder_deps="nvenc"
2801 h264_omx_encoder_deps="omx"
2802 h264_qsv_decoder_deps="libmfx"
2803 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2804 h264_qsv_encoder_deps="libmfx"
2805 h264_qsv_encoder_select="qsvenc"
2806 h264_rkmpp_decoder_deps="rkmpp"
2807 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2808 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2809 h264_vaapi_encoder_select="vaapi_encode golomb"
2810 h264_vda_decoder_deps="vda"
2811 h264_vda_decoder_select="h264_decoder"
2812 h264_vdpau_decoder_deps="vdpau"
2813 h264_vdpau_decoder_select="h264_decoder"
2814 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2815 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2816 hevc_cuvid_decoder_deps="cuda cuvid"
2817 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2818 hevc_mediacodec_decoder_deps="mediacodec"
2819 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2820 hevc_nvenc_encoder_deps="nvenc"
2821 hevc_qsv_decoder_deps="libmfx"
2822 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2823 hevc_qsv_encoder_deps="libmfx"
2824 hevc_qsv_encoder_select="hevcparse qsvenc"
2825 hevc_rkmpp_decoder_deps="rkmpp"
2826 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2827 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2828 hevc_vaapi_encoder_select="vaapi_encode golomb"
2829 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2830 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2831 mjpeg_cuvid_decoder_deps="cuda cuvid"
2832 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2833 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2834 mpeg1_cuvid_decoder_deps="cuda cuvid"
2835 mpeg1_vdpau_decoder_deps="vdpau"
2836 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2837 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2838 mpeg2_crystalhd_decoder_select="crystalhd"
2839 mpeg2_cuvid_decoder_deps="cuda cuvid"
2840 mpeg2_mmal_decoder_deps="mmal"
2841 mpeg2_mediacodec_decoder_deps="mediacodec"
2842 mpeg2_qsv_decoder_deps="libmfx"
2843 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2844 mpeg2_qsv_encoder_deps="libmfx"
2845 mpeg2_qsv_encoder_select="qsvenc"
2846 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2847 mpeg2_vaapi_encoder_select="vaapi_encode"
2848 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2849 mpeg4_crystalhd_decoder_select="crystalhd"
2850 mpeg4_cuvid_decoder_deps="cuda cuvid"
2851 mpeg4_mediacodec_decoder_deps="mediacodec"
2852 mpeg4_mmal_decoder_deps="mmal"
2853 mpeg4_omx_encoder_deps="omx"
2854 mpeg4_vdpau_decoder_deps="vdpau"
2855 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2856 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2857 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2858 mpeg_vdpau_decoder_deps="vdpau"
2859 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2860 msmpeg4_crystalhd_decoder_select="crystalhd"
2861 nvenc_h264_encoder_select="h264_nvenc_encoder"
2862 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2863 vc1_crystalhd_decoder_select="crystalhd"
2864 vc1_cuvid_decoder_deps="cuda cuvid"
2865 vc1_mmal_decoder_deps="mmal"
2866 vc1_vdpau_decoder_deps="vdpau"
2867 vc1_vdpau_decoder_select="vc1_decoder"
2868 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2869 vp8_cuvid_decoder_deps="cuda cuvid"
2870 vp8_mediacodec_decoder_deps="mediacodec"
2871 vp8_qsv_decoder_deps="libmfx"
2872 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2873 vp8_rkmpp_decoder_deps="rkmpp"
2874 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2875 vp8_vaapi_encoder_select="vaapi_encode"
2876 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2877 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2878 vp9_cuvid_decoder_deps="cuda cuvid"
2879 vp9_mediacodec_decoder_deps="mediacodec"
2880 vp9_rkmpp_decoder_deps="rkmpp"
2881 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2882 vp9_vaapi_encoder_select="vaapi_encode"
2883 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2884 wmv3_crystalhd_decoder_select="crystalhd"
2885 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2886
2887 # parsers
2888 h264_parser_select="golomb h264dsp h264parse"
2889 hevc_parser_select="hevcparse"
2890 mpegaudio_parser_select="mpegaudioheader"
2891 mpegvideo_parser_select="mpegvideo"
2892 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2893 vc1_parser_select="vc1dsp"
2894
2895 # bitstream_filters
2896 mjpeg2jpeg_bsf_select="jpegtables"
2897
2898 # external libraries
2899 aac_at_decoder_deps="audiotoolbox"
2900 ac3_at_decoder_deps="audiotoolbox"
2901 ac3_at_decoder_select="ac3_parser"
2902 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2903 alac_at_decoder_deps="audiotoolbox"
2904 amr_nb_at_decoder_deps="audiotoolbox"
2905 avisynth_deps_any="dlopen LoadLibrary"
2906 avisynth_demuxer_deps="avisynth"
2907 avisynth_demuxer_select="riffdec"
2908 eac3_at_decoder_deps="audiotoolbox"
2909 eac3_at_decoder_select="ac3_parser"
2910 gsm_ms_at_decoder_deps="audiotoolbox"
2911 ilbc_at_decoder_deps="audiotoolbox"
2912 mp1_at_decoder_deps="audiotoolbox"
2913 mp2_at_decoder_deps="audiotoolbox"
2914 mp3_at_decoder_deps="audiotoolbox"
2915 mp1_at_decoder_select="mpegaudioheader"
2916 mp2_at_decoder_select="mpegaudioheader"
2917 mp3_at_decoder_select="mpegaudioheader"
2918 pcm_alaw_at_decoder_deps="audiotoolbox"
2919 pcm_mulaw_at_decoder_deps="audiotoolbox"
2920 qdmc_at_decoder_deps="audiotoolbox"
2921 qdm2_at_decoder_deps="audiotoolbox"
2922 aac_at_encoder_deps="audiotoolbox"
2923 aac_at_encoder_select="audio_frame_queue"
2924 alac_at_encoder_deps="audiotoolbox"
2925 alac_at_encoder_select="audio_frame_queue"
2926 ilbc_at_encoder_deps="audiotoolbox"
2927 ilbc_at_encoder_select="audio_frame_queue"
2928 pcm_alaw_at_encoder_deps="audiotoolbox"
2929 pcm_alaw_at_encoder_select="audio_frame_queue"
2930 pcm_mulaw_at_encoder_deps="audiotoolbox"
2931 pcm_mulaw_at_encoder_select="audio_frame_queue"
2932 chromaprint_muxer_deps="chromaprint"
2933 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2934 libcelt_decoder_deps="libcelt"
2935 libfdk_aac_decoder_deps="libfdk_aac"
2936 libfdk_aac_encoder_deps="libfdk_aac"
2937 libfdk_aac_encoder_select="audio_frame_queue"
2938 libgme_demuxer_deps="libgme"
2939 libgsm_decoder_deps="libgsm"
2940 libgsm_encoder_deps="libgsm"
2941 libgsm_ms_decoder_deps="libgsm"
2942 libgsm_ms_encoder_deps="libgsm"
2943 libilbc_decoder_deps="libilbc"
2944 libilbc_encoder_deps="libilbc"
2945 libkvazaar_encoder_deps="libkvazaar"
2946 libmodplug_demuxer_deps="libmodplug"
2947 libmp3lame_encoder_deps="libmp3lame"
2948 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2949 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2950 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2951 libopencore_amrnb_encoder_select="audio_frame_queue"
2952 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2953 libopenh264_decoder_deps="libopenh264"
2954 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2955 libopenh264_encoder_deps="libopenh264"
2956 libopenjpeg_decoder_deps="libopenjpeg"
2957 libopenjpeg_encoder_deps="libopenjpeg"
2958 libopenmpt_demuxer_deps="libopenmpt"
2959 libopus_decoder_deps="libopus"
2960 libopus_encoder_deps="libopus"
2961 libopus_encoder_select="audio_frame_queue"
2962 librsvg_decoder_deps="librsvg"
2963 libshine_encoder_deps="libshine"
2964 libshine_encoder_select="audio_frame_queue"
2965 libspeex_decoder_deps="libspeex"
2966 libspeex_encoder_deps="libspeex"
2967 libspeex_encoder_select="audio_frame_queue"
2968 libtheora_encoder_deps="libtheora"
2969 libtwolame_encoder_deps="libtwolame"
2970 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2971 libvorbis_decoder_deps="libvorbis"
2972 libvorbis_encoder_deps="libvorbis"
2973 libvorbis_encoder_select="audio_frame_queue"
2974 libvpx_vp8_decoder_deps="libvpx"
2975 libvpx_vp8_encoder_deps="libvpx"
2976 libvpx_vp9_decoder_deps="libvpx"
2977 libvpx_vp9_encoder_deps="libvpx"
2978 libwavpack_encoder_deps="libwavpack"
2979 libwavpack_encoder_select="audio_frame_queue"
2980 libwebp_encoder_deps="libwebp"
2981 libwebp_anim_encoder_deps="libwebp"
2982 libx262_encoder_deps="libx262"
2983 libx264_encoder_deps="libx264"
2984 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2985 libx264rgb_encoder_select="libx264_encoder"
2986 libx265_encoder_deps="libx265"
2987 libxavs_encoder_deps="libxavs"
2988 libxvid_encoder_deps="libxvid"
2989 libzvbi_teletext_decoder_deps="libzvbi"
2990 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2991 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2992 videotoolbox_encoder_suggest="vda_framework"
2993
2994 # demuxers / muxers
2995 ac3_demuxer_select="ac3_parser"
2996 aiff_muxer_select="iso_media"
2997 asf_demuxer_select="riffdec"
2998 asf_o_demuxer_select="riffdec"
2999 asf_muxer_select="riffenc"
3000 asf_stream_muxer_select="asf_muxer"
3001 avi_demuxer_select="iso_media riffdec exif"
3002 avi_muxer_select="riffenc"
3003 caf_demuxer_select="iso_media riffdec"
3004 caf_muxer_select="iso_media"
3005 dash_muxer_select="mp4_muxer"
3006 dash_demuxer_deps="libxml2"
3007 dirac_demuxer_select="dirac_parser"
3008 dts_demuxer_select="dca_parser"
3009 dtshd_demuxer_select="dca_parser"
3010 dv_demuxer_select="dvprofile"
3011 dv_muxer_select="dvprofile"
3012 dxa_demuxer_select="riffdec"
3013 eac3_demuxer_select="ac3_parser"
3014 f4v_muxer_select="mov_muxer"
3015 fifo_muxer_deps="threads"
3016 flac_demuxer_select="flac_parser"
3017 hds_muxer_select="flv_muxer"
3018 hls_muxer_select="mpegts_muxer"
3019 image2_alias_pix_demuxer_select="image2_demuxer"
3020 image2_brender_pix_demuxer_select="image2_demuxer"
3021 ipod_muxer_select="mov_muxer"
3022 ismv_muxer_select="mov_muxer"
3023 matroska_audio_muxer_select="matroska_muxer"
3024 matroska_demuxer_select="iso_media riffdec"
3025 matroska_demuxer_suggest="bzlib lzo zlib"
3026 matroska_muxer_select="iso_media riffenc"
3027 mmf_muxer_select="riffenc"
3028 mov_demuxer_select="iso_media riffdec"
3029 mov_demuxer_suggest="zlib"
3030 mov_muxer_select="iso_media riffenc rtpenc_chain"
3031 mp3_demuxer_select="mpegaudio_parser"
3032 mp3_muxer_select="mpegaudioheader"
3033 mp4_muxer_select="mov_muxer"
3034 mpegts_demuxer_select="iso_media"
3035 mpegts_muxer_select="adts_muxer latm_muxer"
3036 mpegtsraw_demuxer_select="mpegts_demuxer"
3037 mxf_d10_muxer_select="mxf_muxer"
3038 mxf_opatom_muxer_select="mxf_muxer"
3039 nut_muxer_select="riffenc"
3040 nuv_demuxer_select="riffdec"
3041 oga_muxer_select="ogg_muxer"
3042 ogg_demuxer_select="dirac_parse"
3043 ogv_muxer_select="ogg_muxer"
3044 opus_muxer_select="ogg_muxer"
3045 psp_muxer_select="mov_muxer"
3046 rtp_demuxer_select="sdp_demuxer"
3047 rtp_muxer_select="golomb"
3048 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3049 rtsp_demuxer_select="http_protocol rtpdec"
3050 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3051 sap_demuxer_select="sdp_demuxer"
3052 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3053 sdp_demuxer_select="rtpdec"
3054 smoothstreaming_muxer_select="ismv_muxer"
3055 spdif_muxer_select="aac_parser"
3056 spx_muxer_select="ogg_muxer"
3057 swf_demuxer_suggest="zlib"
3058 tak_demuxer_select="tak_parser"
3059 tg2_muxer_select="mov_muxer"
3060 tgp_muxer_select="mov_muxer"
3061 vobsub_demuxer_select="mpegps_demuxer"
3062 w64_demuxer_select="wav_demuxer"
3063 w64_muxer_select="wav_muxer"
3064 wav_demuxer_select="riffdec"
3065 wav_muxer_select="riffenc"
3066 webm_muxer_select="iso_media riffenc"
3067 webm_dash_manifest_demuxer_select="matroska_demuxer"
3068 wtv_demuxer_select="mpegts_demuxer riffdec"
3069 wtv_muxer_select="mpegts_muxer riffenc"
3070 xmv_demuxer_select="riffdec"
3071 xwma_demuxer_select="riffdec"
3072
3073 # indevs / outdevs
3074 alsa_indev_deps="alsa"
3075 alsa_outdev_deps="alsa"
3076 avfoundation_indev_deps="avfoundation pthreads"
3077 avfoundation_indev_extralibs="-framework Foundation -framework CoreVideo -framework CoreMedia"
3078 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3079 caca_outdev_deps="libcaca"
3080 decklink_indev_deps="decklink threads"
3081 decklink_indev_extralibs="-lstdc++"
3082 decklink_outdev_deps="decklink threads"
3083 decklink_outdev_extralibs="-lstdc++"
3084 libndi_newtek_indev_deps="libndi_newtek"
3085 libndi_newtek_indev_extralibs="-lndi"
3086 libndi_newtek_outdev_deps="libndi_newtek"
3087 libndi_newtek_outdev_extralibs="-lndi"
3088 dshow_indev_deps="IBaseFilter"
3089 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3090 fbdev_indev_deps="linux_fb_h"
3091 fbdev_outdev_deps="linux_fb_h"
3092 gdigrab_indev_deps="CreateDIBSection"
3093 gdigrab_indev_extralibs="-lgdi32"
3094 gdigrab_indev_select="bmp_decoder"
3095 iec61883_indev_deps="libiec61883"
3096 jack_indev_deps="jack"
3097 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3098 kmsgrab_indev_deps="libdrm"
3099 lavfi_indev_deps="avfilter"
3100 libcdio_indev_deps="libcdio"
3101 libdc1394_indev_deps="libdc1394"
3102 libv4l2_indev_deps="libv4l2"
3103 openal_indev_deps="openal"
3104 opengl_outdev_deps="opengl"
3105 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3106 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3107 pulse_indev_deps="libpulse"
3108 pulse_outdev_deps="libpulse"
3109 sdl2_outdev_deps="sdl2"
3110 sndio_indev_deps="sndio"
3111 sndio_outdev_deps="sndio"
3112 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3113 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3114 vfwcap_indev_deps="vfw32 vfwcap_defines"
3115 xcbgrab_indev_deps="libxcb"
3116 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3117 xv_outdev_extralibs="-lXv -lX11 -lXext"
3118
3119 # protocols
3120 async_protocol_deps="threads"
3121 bluray_protocol_deps="libbluray"
3122 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3123 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3124 ffrtmpcrypt_protocol_select="tcp_protocol"
3125 ffrtmphttp_protocol_deps="!librtmp_protocol"
3126 ffrtmphttp_protocol_select="http_protocol"
3127 ftp_protocol_select="tcp_protocol"
3128 gopher_protocol_select="network"
3129 http_protocol_select="tcp_protocol"
3130 httpproxy_protocol_select="tcp_protocol"
3131 https_protocol_select="tls_protocol"
3132 icecast_protocol_select="http_protocol"
3133 librtmp_protocol_deps="librtmp"
3134 librtmpe_protocol_deps="librtmp"
3135 librtmps_protocol_deps="librtmp"
3136 librtmpt_protocol_deps="librtmp"
3137 librtmpte_protocol_deps="librtmp"
3138 libsmbclient_protocol_deps="libsmbclient gplv3"
3139 libssh_protocol_deps="libssh"
3140 mmsh_protocol_select="http_protocol"
3141 mmst_protocol_select="network"
3142 rtmp_protocol_deps="!librtmp_protocol"
3143 rtmp_protocol_select="tcp_protocol"
3144 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3145 rtmps_protocol_deps="!librtmp_protocol"
3146 rtmps_protocol_select="tls_protocol"
3147 rtmpt_protocol_select="ffrtmphttp_protocol"
3148 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3149 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3150 rtp_protocol_select="udp_protocol"
3151 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3152 sctp_protocol_select="network"
3153 srtp_protocol_select="rtp_protocol srtp"
3154 tcp_protocol_select="network"
3155 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3156 tls_gnutls_protocol_select="tcp_protocol"
3157 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3158 tls_openssl_protocol_select="tcp_protocol"
3159 tls_schannel_protocol_deps="schannel"
3160 tls_schannel_protocol_select="tcp_protocol"
3161 tls_securetransport_protocol_deps="securetransport"
3162 tls_securetransport_protocol_select="tcp_protocol"
3163 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3164 udp_protocol_select="network"
3165 udplite_protocol_select="network"
3166 unix_protocol_deps="sys_un_h"
3167 unix_protocol_select="network"
3168
3169 # filters
3170 afftfilt_filter_deps="avcodec"
3171 afftfilt_filter_select="fft"
3172 afir_filter_deps="avcodec"
3173 afir_filter_select="fft"
3174 amovie_filter_deps="avcodec avformat"
3175 aresample_filter_deps="swresample"
3176 ass_filter_deps="libass"
3177 atempo_filter_deps="avcodec"
3178 atempo_filter_select="rdft"
3179 azmq_filter_deps="libzmq"
3180 blackframe_filter_deps="gpl"
3181 boxblur_filter_deps="gpl"
3182 bs2b_filter_deps="libbs2b"
3183 colormatrix_filter_deps="gpl"
3184 coreimage_filter_deps="coreimage appkit"
3185 coreimage_filter_extralibs="-framework OpenGL"
3186 coreimagesrc_filter_deps="coreimage appkit"
3187 coreimagesrc_filter_extralibs="-framework OpenGL"
3188 cover_rect_filter_deps="avcodec avformat gpl"
3189 cropdetect_filter_deps="gpl"
3190 deinterlace_qsv_filter_deps="libmfx"
3191 deinterlace_vaapi_filter_deps="vaapi"
3192 delogo_filter_deps="gpl"
3193 deshake_filter_select="pixelutils"
3194 drawtext_filter_deps="libfreetype"
3195 elbg_filter_deps="avcodec"
3196 eq_filter_deps="gpl"
3197 fftfilt_filter_deps="avcodec"
3198 fftfilt_filter_select="rdft"
3199 find_rect_filter_deps="avcodec avformat gpl"
3200 firequalizer_filter_deps="avcodec"
3201 firequalizer_filter_select="rdft"
3202 flite_filter_deps="libflite"
3203 framerate_filter_select="pixelutils"
3204 frei0r_filter_deps="frei0r dlopen"
3205 frei0r_src_filter_deps="frei0r dlopen"
3206 fspp_filter_deps="gpl"
3207 geq_filter_deps="gpl"
3208 histeq_filter_deps="gpl"
3209 hqdn3d_filter_deps="gpl"
3210 interlace_filter_deps="gpl"
3211 kerndeint_filter_deps="gpl"
3212 ladspa_filter_deps="ladspa dlopen"
3213 mcdeint_filter_deps="avcodec gpl"
3214 movie_filter_deps="avcodec avformat"
3215 mpdecimate_filter_deps="gpl"
3216 mpdecimate_filter_select="pixelutils"
3217 mptestsrc_filter_deps="gpl"
3218 negate_filter_deps="lut_filter"
3219 nnedi_filter_deps="gpl"
3220 ocr_filter_deps="libtesseract"
3221 ocv_filter_deps="libopencv"
3222 owdenoise_filter_deps="gpl"
3223 pan_filter_deps="swresample"
3224 perspective_filter_deps="gpl"
3225 phase_filter_deps="gpl"
3226 pp7_filter_deps="gpl"
3227 pp_filter_deps="gpl postproc"
3228 pullup_filter_deps="gpl"
3229 removelogo_filter_deps="avcodec avformat swscale"
3230 repeatfields_filter_deps="gpl"
3231 resample_filter_deps="avresample"
3232 rubberband_filter_deps="librubberband"
3233 sab_filter_deps="gpl swscale"
3234 scale2ref_filter_deps="swscale"
3235 scale_filter_deps="swscale"
3236 scale_qsv_filter_deps="libmfx"
3237 select_filter_select="pixelutils"
3238 showcqt_filter_deps="avcodec avformat swscale"
3239 showcqt_filter_select="fft"
3240 showfreqs_filter_deps="avcodec"
3241 showfreqs_filter_select="fft"
3242 showspectrum_filter_deps="avcodec"
3243 showspectrum_filter_select="fft"
3244 showspectrumpic_filter_deps="avcodec"
3245 showspectrumpic_filter_select="fft"
3246 signature_filter_deps="gpl avcodec avformat"
3247 smartblur_filter_deps="gpl swscale"
3248 sofalizer_filter_deps="libmysofa avcodec"
3249 sofalizer_filter_select="fft"
3250 spectrumsynth_filter_deps="avcodec"
3251 spectrumsynth_filter_select="fft"
3252 spp_filter_deps="gpl avcodec"
3253 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3254 stereo3d_filter_deps="gpl"
3255 subtitles_filter_deps="avformat avcodec libass"
3256 super2xsai_filter_deps="gpl"
3257 pixfmts_super2xsai_test_deps="super2xsai_filter"
3258 tinterlace_filter_deps="gpl"
3259 tinterlace_merge_test_deps="tinterlace_filter"
3260 tinterlace_pad_test_deps="tinterlace_filter"
3261 tonemap_filter_deps="const_nan"
3262 uspp_filter_deps="gpl avcodec"
3263 vaguedenoiser_filter_deps="gpl"
3264 vidstabdetect_filter_deps="libvidstab"
3265 vidstabtransform_filter_deps="libvidstab"
3266 libvmaf_filter_deps="libvmaf"
3267 zmq_filter_deps="libzmq"
3268 zoompan_filter_deps="swscale"
3269 zscale_filter_deps="libzimg const_nan"
3270 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3271
3272 # examples
3273 avio_dir_cmd_deps="avformat avutil"
3274 avio_reading_deps="avformat avcodec avutil"
3275 decode_audio_example_deps="avcodec avutil"
3276 decode_video_example_deps="avcodec avutil"
3277 demuxing_decoding_example_deps="avcodec avformat avutil"
3278 encode_audio_example_deps="avcodec avutil"
3279 encode_video_example_deps="avcodec avutil"
3280 extract_mvs_example_deps="avcodec avformat avutil"
3281 filter_audio_example_deps="avfilter avutil"
3282 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3283 filtering_video_example_deps="avfilter avcodec avformat avutil"
3284 http_multiclient_example_deps="avformat avutil fork"
3285 hw_decode_example_deps="avcodec avformat avutil"
3286 metadata_example_deps="avformat avutil"
3287 muxing_example_deps="avcodec avformat avutil swscale"
3288 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3289 remuxing_example_deps="avcodec avformat avutil"
3290 resampling_audio_example_deps="avutil swresample"
3291 scaling_video_example_deps="avutil swscale"
3292 transcode_aac_example_deps="avcodec avformat swresample"
3293 transcoding_example_deps="avfilter avcodec avformat avutil"
3294
3295 # libraries, in linking order
3296 avcodec_deps="avutil"
3297 avcodec_select="null_bsf"
3298 avdevice_deps="avformat avcodec avutil"
3299 avfilter_deps="avutil"
3300 avformat_deps="avcodec avutil"
3301 avformat_suggest="network"
3302 avresample_deps="avutil"
3303 postproc_deps="avutil gpl"
3304 swresample_deps="avutil"
3305 swscale_deps="avutil"
3306
3307 # programs
3308 ffmpeg_deps="avcodec avfilter avformat swresample"
3309 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3310                null_filter
3311                trim_filter"
3312 ffplay_deps="avcodec avformat swscale swresample sdl2"
3313 ffplay_extralibs='$sdl2_extralibs'
3314 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3315 ffprobe_deps="avcodec avformat"
3316 ffserver_deps="avformat fork sarestart"
3317 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3318
3319 # documentation
3320 podpages_deps="perl"
3321 manpages_deps="perl pod2man"
3322 htmlpages_deps="perl"
3323 htmlpages_deps_any="makeinfo_html texi2html"
3324 txtpages_deps="perl makeinfo"
3325 doc_deps_any="manpages htmlpages podpages txtpages"
3326
3327 # default parameters
3328
3329 logfile="ffbuild/config.log"
3330
3331 # installation paths
3332 prefix_default="/usr/local"
3333 bindir_default='${prefix}/bin'
3334 datadir_default='${prefix}/share/ffmpeg'
3335 docdir_default='${prefix}/share/doc/ffmpeg'
3336 incdir_default='${prefix}/include'
3337 libdir_default='${prefix}/lib'
3338 mandir_default='${prefix}/share/man'
3339
3340 # toolchain
3341 ar_default="ar"
3342 cc_default="gcc"
3343 cxx_default="g++"
3344 host_cc_default="gcc"
3345 doxygen_default="doxygen"
3346 install="install"
3347 ln_s_default="ln -s -f"
3348 nm_default="nm -g"
3349 pkg_config_default=pkg-config
3350 ranlib_default="ranlib"
3351 strip_default="strip"
3352 version_script='--version-script'
3353 x86asmexe_default="nasm"
3354 windres_default="windres"
3355 nvcc_default="nvcc"
3356 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3357
3358 # OS
3359 target_os_default=$(tolower $(uname -s))
3360 host_os=$target_os_default
3361
3362 # machine
3363 if test "$target_os_default" = aix; then
3364     arch_default=$(uname -p)
3365     strip_default="strip -X32_64"
3366 else
3367     arch_default=$(uname -m)
3368 fi
3369 cpu="generic"
3370 intrinsics="none"
3371
3372 # configurable options
3373 enable $PROGRAM_LIST
3374 enable $DOCUMENT_LIST
3375 enable $EXAMPLE_LIST
3376 enable $(filter_out avresample $LIBRARY_LIST)
3377 enable stripping
3378
3379 enable asm
3380 enable debug
3381 enable doc
3382 enable faan faandct faanidct
3383 enable optimizations
3384 enable runtime_cpudetect
3385 enable safe_bitstream_reader
3386 enable static
3387 enable swscale_alpha
3388 enable valgrind_backtrace
3389
3390 sws_max_filter_size_default=256
3391 set_default sws_max_filter_size
3392
3393 # build settings
3394 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3395 LIBPREF="lib"
3396 LIBSUF=".a"
3397 FULLNAME='$(NAME)$(BUILDSUF)'
3398 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3399 SLIBPREF="lib"
3400 SLIBSUF=".so"
3401 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3402 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3403 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3404 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3405 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3406 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3407 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3408
3409 asflags_filter=echo
3410 cflags_filter=echo
3411 ldflags_filter=echo
3412
3413 AS_C='-c'
3414 AS_O='-o $@'
3415 CC_C='-c'
3416 CC_E='-E -o $@'
3417 CC_O='-o $@'
3418 CXX_C='-c'
3419 CXX_O='-o $@'
3420 OBJCC_C='-c'
3421 OBJCC_E='-E -o $@'
3422 OBJCC_O='-o $@'
3423 X86ASM_O='-o $@'
3424 LD_O='-o $@'
3425 LD_LIB='-l%'
3426 LD_PATH='-L'
3427 HOSTCC_C='-c'
3428 HOSTCC_E='-E -o $@'
3429 HOSTCC_O='-o $@'
3430 HOSTLD_O='-o $@'
3431 NVCC_C='-c'
3432 NVCC_O='-o $@'
3433
3434 host_extralibs='-lm'
3435 host_cflags_filter=echo
3436 host_ldflags_filter=echo
3437
3438 target_path='$(CURDIR)'
3439
3440 # since the object filename is not given with the -MM flag, the compiler
3441 # is only able to print the basename, and we must add the path ourselves
3442 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3443 DEPFLAGS='-MM'
3444
3445 mkdir -p ffbuild
3446
3447 # find source path
3448 if test -f configure; then
3449     source_path=.
3450 else
3451     source_path=$(cd $(dirname "$0"); pwd)
3452     case "$source_path" in
3453         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3454     esac
3455     test -e "$source_path/config.h" &&
3456         die "Out of tree builds are impossible with config.h in source dir."
3457 fi
3458
3459 for v in "$@"; do
3460     r=${v#*=}
3461     l=${v%"$r"}
3462     r=$(sh_quote "$r")
3463     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3464 done
3465
3466 find_things(){
3467     thing=$1
3468     pattern=$2
3469     file=$source_path/$3
3470     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3471 }
3472
3473 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3474 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3475 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3476 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3477 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3478 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3479 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3480 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3481 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3482
3483 find_things_extern(){
3484     thing=$1
3485     pattern=$2
3486     file=$source_path/$3
3487     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3488 }
3489
3490 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3491 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3492
3493 ALL_COMPONENTS="
3494     $BSF_LIST
3495     $DECODER_LIST
3496     $DEMUXER_LIST
3497     $ENCODER_LIST
3498     $FILTER_LIST
3499     $HWACCEL_LIST
3500     $INDEV_LIST
3501     $MUXER_LIST
3502     $OUTDEV_LIST
3503     $PARSER_LIST
3504     $PROTOCOL_LIST
3505 "
3506
3507 for n in $COMPONENT_LIST; do
3508     v=$(toupper ${n%s})_LIST
3509     eval enable \$$v
3510     eval ${n}_if_any="\$$v"
3511 done
3512
3513 enable $ARCH_EXT_LIST
3514
3515 die_unknown(){
3516     echo "Unknown option \"$1\"."
3517     echo "See $0 --help for available options."
3518     exit 1
3519 }
3520
3521 print_in_columns() {
3522     cols=$(expr $ncols / 24)
3523     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3524 }
3525
3526 show_list() {
3527     suffix=_$1
3528     shift
3529     echo $* | sed s/$suffix//g | print_in_columns
3530     exit 0
3531 }
3532
3533 rand_list(){
3534     IFS=', '
3535     set -- $*
3536     unset IFS
3537     for thing; do
3538         comp=${thing%:*}
3539         prob=${thing#$comp}
3540         prob=${prob#:}
3541         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3542         echo "prob ${prob:-0.5}"
3543         printf '%s\n' $comp
3544     done
3545 }
3546
3547 do_random(){
3548     action=$1
3549     shift
3550     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3551     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3552 }
3553
3554 for opt do
3555     optval="${opt#*=}"
3556     case "$opt" in
3557         --extra-ldflags=*)
3558             add_ldflags $optval
3559         ;;
3560         --extra-ldexeflags=*)
3561             add_ldexeflags $optval
3562         ;;
3563         --extra-ldlibflags=*)
3564             add_ldlibflags $optval
3565         ;;
3566         --extra-libs=*)
3567             add_extralibs $optval
3568         ;;
3569         --disable-devices)
3570             disable $INDEV_LIST $OUTDEV_LIST
3571         ;;
3572         --enable-debug=*)
3573             debuglevel="$optval"
3574         ;;
3575         --disable-programs)
3576             disable $PROGRAM_LIST
3577         ;;
3578         --disable-everything)
3579             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3580         ;;
3581         --disable-all)
3582             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3583             disable $LIBRARY_LIST $PROGRAM_LIST doc
3584             enable avutil
3585         ;;
3586         --enable-random|--disable-random)
3587             action=${opt%%-random}
3588             do_random ${action#--} $COMPONENT_LIST
3589         ;;
3590         --enable-random=*|--disable-random=*)
3591             action=${opt%%-random=*}
3592             do_random ${action#--} $optval
3593         ;;
3594         --enable-sdl)
3595             enable sdl2
3596         ;;
3597         --enable-*=*|--disable-*=*)
3598             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3599             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3600             eval list=\$$(toupper $thing)_LIST
3601             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3602             list=$(filter "$name" $list)
3603             [ "$list" = "" ] && warn "Option $opt did not match anything"
3604             $action $list
3605         ;;
3606         --enable-yasm|--disable-yasm)
3607             warn "The ${opt} option is only provided for compatibility and will be\n"\
3608                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3609             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3610         ;;
3611         --yasmexe=*)
3612             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3613                  "removed in the future. Use --x86asmexe instead."
3614             x86asmexe="$optval"
3615         ;;
3616         --enable-?*|--disable-?*)
3617             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3618             if is_in $option $COMPONENT_LIST; then
3619                 test $action = disable && action=unset
3620                 eval $action \$$(toupper ${option%s})_LIST
3621             elif is_in $option $CMDLINE_SELECT; then
3622                 $action $option
3623             else
3624                 die_unknown $opt
3625             fi
3626         ;;
3627         --list-*)
3628             NAME="${opt#--list-}"
3629             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3630             NAME=${NAME%s}
3631             eval show_list $NAME \$$(toupper $NAME)_LIST
3632         ;;
3633         --help|-h) show_help
3634         ;;
3635         --quiet|-q) quiet=yes
3636         ;;
3637         --fatal-warnings) enable fatal_warnings
3638         ;;
3639         --libfuzzer=*)
3640             libfuzzer_path="$optval"
3641         ;;
3642         *)
3643             optname="${opt%%=*}"
3644             optname="${optname#--}"
3645             optname=$(echo "$optname" | sed 's/-/_/g')
3646             if is_in $optname $CMDLINE_SET; then
3647                 eval $optname='$optval'
3648             elif is_in $optname $CMDLINE_APPEND; then
3649                 append $optname "$optval"
3650             else
3651                 die_unknown $opt
3652             fi
3653         ;;
3654     esac
3655 done
3656
3657 for e in $env; do
3658     eval "export $e"
3659 done
3660
3661 if disabled autodetect; then
3662
3663     # Unless iconv is explicitely disabled by the user, we still want to probe
3664     # for the iconv from the libc.
3665     disabled iconv || enable libc_iconv
3666
3667     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3668     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3669 fi
3670 # Mark specifically enabled, but normally autodetected libraries as requested.
3671 for lib in $AUTODETECT_LIBS; do
3672     enabled $lib && request $lib
3673 done
3674 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3675 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3676 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3677
3678 disabled logging && logfile=/dev/null
3679
3680 die_license_disabled() {
3681     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3682 }
3683
3684 die_license_disabled_gpl() {
3685     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3686 }
3687
3688 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3689 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3690
3691 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3692 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3693
3694 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3695
3696 # Disable all the library-specific components if the library itself
3697 # is disabled, see AVCODEC_LIST and following _LIST variables.
3698
3699 disable_components(){
3700     disabled ${1} && disable $(
3701         eval components="\$$(toupper ${1})_COMPONENTS"
3702         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3703     )
3704 }
3705
3706 map 'disable_components $v' $LIBRARY_LIST
3707
3708 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3709 set >> $logfile
3710
3711 test -n "$valgrind" && toolchain="valgrind-memcheck"
3712
3713 enabled ossfuzz && {
3714     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3715     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3716 }
3717
3718 case "$toolchain" in
3719     *-asan)
3720         cc_default="${toolchain%-asan}"
3721         add_cflags  -fsanitize=address
3722         add_ldflags -fsanitize=address
3723     ;;
3724     *-msan)
3725         cc_default="${toolchain%-msan}"
3726         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3727         add_ldflags -fsanitize=memory
3728     ;;
3729     *-tsan)
3730         cc_default="${toolchain%-tsan}"
3731         add_cflags  -fsanitize=thread -fPIE
3732         add_ldflags -fsanitize=thread -pie
3733         case "$toolchain" in
3734             gcc-tsan)
3735                 add_cflags  -fPIC
3736                 add_ldflags -fPIC
3737                 ;;
3738         esac
3739     ;;
3740     *-usan)
3741         cc_default="${toolchain%-usan}"
3742         add_cflags  -fsanitize=undefined
3743         add_ldflags -fsanitize=undefined
3744     ;;
3745     valgrind-*)
3746         target_exec_default="valgrind"
3747         case "$toolchain" in
3748             valgrind-massif)
3749                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3750                 ;;
3751             valgrind-memcheck)
3752                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3753                 ;;
3754         esac
3755     ;;
3756     msvc)
3757         # Check whether the current MSVC version needs the C99 converter.
3758         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3759         # support enough of C99 to build ffmpeg. Default to the new
3760         # behaviour if the regexp was unable to match anything, since this
3761         # successfully parses the version number of existing supported
3762         # versions that require the converter (MSVC 2010 and 2012).
3763         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3764         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3765             cc_default="cl"
3766             cxx_default="cl"
3767         else
3768             cc_default="c99wrap cl"
3769             cxx_default="c99wrap cl"
3770         fi
3771         ld_default="$source_path/compat/windows/mslink"
3772         nm_default="dumpbin -symbols"
3773         ar_default="lib"
3774         case "$arch" in
3775         arm*)
3776             as_default="armasm"
3777             ;;
3778         esac
3779         target_os_default="win32"
3780         # Use a relative path for TMPDIR. This makes sure all the
3781         # ffconf temp files are written with a relative path, avoiding
3782         # issues with msys/win32 path conversion for MSVC parameters
3783         # such as -Fo<file> or -out:<file>.
3784         TMPDIR=.
3785     ;;
3786     icl)
3787         cc_default="icl"
3788         ld_default="xilink"
3789         nm_default="dumpbin -symbols"
3790         ar_default="xilib"
3791         target_os_default="win32"
3792         TMPDIR=.
3793     ;;
3794     gcov)
3795         add_cflags  -fprofile-arcs -ftest-coverage
3796         add_ldflags -fprofile-arcs -ftest-coverage
3797     ;;
3798     llvm-cov)
3799         add_cflags -fprofile-arcs -ftest-coverage
3800         add_ldflags --coverage
3801     ;;
3802     hardened)
3803         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3804         add_cflags   -fno-strict-overflow -fstack-protector-all
3805         add_ldflags  -Wl,-z,relro -Wl,-z,now
3806         add_cflags   -fPIE
3807         add_ldexeflags -fPIE -pie
3808     ;;
3809     ?*)
3810         die "Unknown toolchain $toolchain"
3811     ;;
3812 esac
3813
3814 test -n "$cross_prefix" && enable cross_compile
3815
3816 if enabled cross_compile; then
3817     test -n "$arch" && test -n "$target_os" ||
3818         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3819 fi
3820
3821 ar_default="${cross_prefix}${ar_default}"
3822 cc_default="${cross_prefix}${cc_default}"
3823 cxx_default="${cross_prefix}${cxx_default}"
3824 nm_default="${cross_prefix}${nm_default}"
3825 pkg_config_default="${cross_prefix}${pkg_config_default}"
3826 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3827     ranlib_default="${cross_prefix}${ranlib_default} -D"
3828 else
3829     ranlib_default="${cross_prefix}${ranlib_default}"
3830 fi
3831 strip_default="${cross_prefix}${strip_default}"
3832 windres_default="${cross_prefix}${windres_default}"
3833
3834 sysinclude_default="${sysroot}/usr/include"
3835
3836 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3837     target_exec target_os x86asmexe nvcc
3838 enabled cross_compile || host_cc_default=$cc
3839 set_default host_cc
3840
3841 pkg_config_fail_message=""
3842 if ! $pkg_config --version >/dev/null 2>&1; then
3843     warn "$pkg_config not found, library detection may fail."
3844     pkg_config=false
3845 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3846     pkg_config_fail_message="
3847 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3848 fi
3849
3850 if test $doxygen != $doxygen_default && \
3851   ! $doxygen --version >/dev/null 2>&1; then
3852     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3853 fi
3854
3855 exesuf() {
3856     case $1 in
3857         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3858     esac
3859 }
3860
3861 EXESUF=$(exesuf $target_os)
3862 HOSTEXESUF=$(exesuf $host_os)
3863
3864 # set temporary file name
3865 : ${TMPDIR:=$TEMPDIR}
3866 : ${TMPDIR:=$TMP}
3867 : ${TMPDIR:=/tmp}
3868
3869 if [ -n "$tempprefix" ] ; then
3870     mktemp(){
3871         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3872         echo "$tmpname"
3873         mkdir "$tmpname"
3874     }
3875 elif ! check_cmd mktemp -u XXXXXX; then
3876     # simple replacement for missing mktemp
3877     # NOT SAFE FOR GENERAL USE
3878     mktemp(){
3879         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3880         echo "$tmpname"
3881         mkdir "$tmpname"
3882     }
3883 fi
3884
3885 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3886     die "Unable to create temporary directory in $TMPDIR."
3887
3888 tmpfile(){
3889     tmp="${FFTMPDIR}/test"$2
3890     (set -C; exec > $tmp) 2> /dev/null ||
3891         die "Unable to create temporary file in $FFTMPDIR."
3892     eval $1=$tmp
3893 }
3894
3895 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3896 trap 'exit 2' INT
3897
3898 tmpfile TMPASM .asm
3899 tmpfile TMPC   .c
3900 tmpfile TMPCPP .cpp
3901 tmpfile TMPE   $EXESUF
3902 tmpfile TMPH   .h
3903 tmpfile TMPM   .m
3904 tmpfile TMPO   .o
3905 tmpfile TMPS   .S
3906 tmpfile TMPSH  .sh
3907 tmpfile TMPV   .ver
3908
3909 unset -f mktemp
3910
3911 chmod +x $TMPE
3912
3913 # make sure we can execute files in $TMPDIR
3914 cat > $TMPSH 2>> $logfile <<EOF
3915 #! /bin/sh
3916 EOF
3917 chmod +x $TMPSH >> $logfile 2>&1
3918 if ! $TMPSH >> $logfile 2>&1; then
3919     cat <<EOF
3920 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3921 variable to another directory and make sure that it is not mounted noexec.
3922 EOF
3923     die "Sanity test failed."
3924 fi
3925
3926 armasm_flags(){
3927     for flag; do
3928         case $flag in
3929             # Filter out MSVC cl.exe options from cflags that shouldn't
3930             # be passed to gas-preprocessor
3931             -M[TD]*)                                            ;;
3932             *)                  echo $flag                      ;;
3933         esac
3934    done
3935 }
3936
3937 ccc_flags(){
3938     for flag; do
3939         case $flag in
3940             -std=c99)           echo -c99                       ;;
3941             -mcpu=*)            echo -arch ${flag#*=}           ;;
3942             -mieee)             echo -ieee                      ;;
3943             -O*|-fast)          echo $flag                      ;;
3944             -fno-math-errno)    echo -assume nomath_errno       ;;
3945             -g)                 echo -g3                        ;;
3946             -Wall)              echo -msg_enable level2         ;;
3947             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3948             -Wl,*)              echo $flag                      ;;
3949             -f*|-W*)                                            ;;
3950             *)                  echo $flag                      ;;
3951         esac
3952    done
3953 }
3954
3955 cparser_flags(){
3956     for flag; do
3957         case $flag in
3958             -Wno-switch)             echo -Wno-switch-enum ;;
3959             -Wno-format-zero-length) ;;
3960             -Wdisabled-optimization) ;;
3961             -Wno-pointer-sign)       echo -Wno-other ;;
3962             *)                       echo $flag ;;
3963         esac
3964     done
3965 }
3966
3967 msvc_common_flags(){
3968     for flag; do
3969         case $flag in
3970             # In addition to specifying certain flags under the compiler
3971             # specific filters, they must be specified here as well or else the
3972             # generic catch all at the bottom will print the original flag.
3973             -Wall)                ;;
3974             -Wextra)              ;;
3975             -std=c99)             ;;
3976             # Common flags
3977             -fomit-frame-pointer) ;;
3978             -g)                   echo -Z7 ;;
3979             -fno-math-errno)      ;;
3980             -fno-common)          ;;
3981             -fno-signed-zeros)    ;;
3982             -fPIC)                ;;
3983             -mthumb)              ;;
3984             -march=*)             ;;
3985             -lz)                  echo zlib.lib ;;
3986             -lx264)               echo libx264.lib ;;
3987             -lstdc++)             ;;
3988             -l*)                  echo ${flag#-l}.lib ;;
3989             -LARGEADDRESSAWARE)   echo $flag ;;
3990             -L*)                  echo -libpath:${flag#-L} ;;
3991             *)                    echo $flag ;;
3992         esac
3993     done
3994 }
3995
3996 msvc_flags(){
3997     msvc_common_flags "$@"
3998     for flag; do
3999         case $flag in
4000             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4001                                        -wd4554 ;;
4002             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4003                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4004                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4005                                        -wd4307 \
4006                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4007         esac
4008     done
4009 }
4010
4011 icl_flags(){
4012     msvc_common_flags "$@"
4013     for flag; do
4014         case $flag in
4015             # Despite what Intel's documentation says -Wall, which is supported
4016             # on Windows, does enable remarks so disable them here.
4017             -Wall)                echo $flag -Qdiag-disable:remark ;;
4018             -std=c99)             echo -Qstd=c99 ;;
4019             -flto)                echo -ipo ;;
4020         esac
4021     done
4022 }
4023
4024 icc_flags(){
4025     for flag; do
4026         case $flag in
4027             -flto)                echo -ipo ;;
4028             *)                    echo $flag ;;
4029         esac
4030     done
4031 }
4032
4033 pgi_flags(){
4034     for flag; do
4035         case $flag in
4036             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4037             -fomit-frame-pointer) echo -Mnoframe ;;
4038             -g)                   echo -gopt ;;
4039             *)                    echo $flag ;;
4040         esac
4041     done
4042 }
4043
4044 suncc_flags(){
4045     for flag; do
4046         case $flag in
4047             -march=*|-mcpu=*)
4048                 case "${flag#*=}" in
4049                     native)                   echo -xtarget=native       ;;
4050                     v9|niagara)               echo -xarch=sparc          ;;
4051                     ultrasparc)               echo -xarch=sparcvis       ;;
4052                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4053                     i586|pentium)             echo -xchip=pentium        ;;
4054                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4055                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4056                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4057                     pentium4*)          echo -xtarget=pentium4           ;;
4058                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4059                     *-sse3)             echo -xarch=sse3                 ;;
4060                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4061                     bonnell)                   echo -xarch=ssse3         ;;
4062                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4063                     westmere)                  echo -xtarget=westmere    ;;
4064                     silvermont)                echo -xarch=sse4_2        ;;
4065                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4066                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4067                                                echo -xarch=avx           ;;
4068                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4069                     btver1)                    echo -xarch=amdsse4a      ;;
4070                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4071                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4072                     k8|opteron|athlon64|athlon-fx)
4073                                                echo -xarch=sse2a         ;;
4074                     athlon*)                   echo -xarch=pentium_proa  ;;
4075                 esac
4076                 ;;
4077             -std=c99)             echo -xc99              ;;
4078             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4079             -fPIC)                echo -KPIC -xcode=pic32 ;;
4080             -W*,*)                echo $flag              ;;
4081             -f*-*|-W*|-mimpure-text)                      ;;
4082             -shared)              echo -G                 ;;
4083             *)                    echo $flag              ;;
4084         esac
4085     done
4086 }
4087
4088 tms470_flags(){
4089     for flag; do
4090         case $flag in
4091             -march=*|-mcpu=*)
4092                 case "${flag#*=}" in
4093                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4094                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4095                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4096                     armv6*|arm11*)          echo -mv=6   ;;
4097                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4098                                             echo -mv=5e  ;;
4099                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4100                 esac
4101                 ;;
4102             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4103             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4104             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4105             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4106             -msoft-float)   echo --float_support=vfplib       ;;
4107             -O[0-3]|-mf=*)  echo $flag                        ;;
4108             -g)             echo -g -mn                       ;;
4109             -pds=*)         echo $flag                        ;;
4110             -D*|-I*)        echo $flag                        ;;
4111             --gcc|--abi=*)  echo $flag                        ;;
4112             -me)            echo $flag                        ;;
4113         esac
4114     done
4115 }
4116
4117 probe_cc(){
4118     pfx=$1
4119     _cc=$2
4120     first=$3
4121
4122     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4123     unset _ld_o _ldflags _ld_lib _ld_path
4124     unset _depflags _DEPCMD _DEPFLAGS
4125     _flags_filter=echo
4126
4127     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4128         true # no-op to avoid reading stdin in following checks
4129     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4130         _type=llvm_gcc
4131         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4132         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4133         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4134         _cflags_speed='-O3'
4135         _cflags_size='-Os'
4136     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4137         _type=gcc
4138         gcc_version=$($_cc --version | head -n1)
4139         gcc_basever=$($_cc -dumpversion)
4140         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4141         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4142         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4143         case $gcc_basever in
4144             2) ;;
4145             2.*) ;;
4146             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4147         esac
4148         if [ "$first" = true ]; then
4149             case $gcc_basever in
4150                 4.2*)
4151                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4152             esac
4153         fi
4154         _cflags_speed='-O3'
4155         _cflags_size='-Os'
4156     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4157         _type=icc
4158         _ident=$($_cc --version | head -n1)
4159         _depflags='-MMD'
4160         _cflags_speed='-O3'
4161         _cflags_size='-Os'
4162         _cflags_noopt='-O1'
4163         _flags_filter=icc_flags
4164     elif $_cc -v 2>&1 | grep -q xlc; then
4165         _type=xlc
4166         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4167         _cflags_speed='-O5'
4168         _cflags_size='-O5 -qcompact'
4169     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4170         _type=ccc
4171         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4172         _DEPFLAGS='-M'
4173         _cflags_speed='-fast'
4174         _cflags_size='-O1'
4175         _flags_filter=ccc_flags
4176     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4177         test -d "$sysroot" || die "No valid sysroot specified."
4178         _type=armcc
4179         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4180         armcc_conf="$PWD/armcc.conf"
4181         $_cc --arm_linux_configure                 \
4182              --arm_linux_config_file="$armcc_conf" \
4183              --configure_sysroot="$sysroot"        \
4184              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4185              die "Error creating armcc configuration file."
4186         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4187         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4188         as_default="${cross_prefix}gcc"
4189         _depflags='-MMD'
4190         _cflags_speed='-O3'
4191         _cflags_size='-Os'
4192     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4193         _type=tms470
4194         _ident=$($_cc -version | head -n1 | tr -s ' ')
4195         _flags='--gcc --abi=eabi -me'
4196         _cc_e='-ppl -fe=$@'
4197         _cc_o='-fe=$@'
4198         _depflags='-ppa -ppd=$(@:.o=.d)'
4199         _cflags_speed='-O3 -mf=5'
4200         _cflags_size='-O3 -mf=2'
4201         _flags_filter=tms470_flags
4202     elif $_cc -v 2>&1 | grep -q clang; then
4203         _type=clang
4204         _ident=$($_cc --version 2>/dev/null | head -n1)
4205         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4206         _cflags_speed='-O3'
4207         _cflags_size='-Oz'
4208     elif $_cc -V 2>&1 | grep -q Sun; then
4209         _type=suncc
4210         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4211         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4212         _DEPFLAGS='-xM1 -xc99'
4213         _ldflags='-std=c99'
4214         _cflags_speed='-O5'
4215         _cflags_size='-O5 -xspace'
4216         _flags_filter=suncc_flags
4217     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4218         _type=pathscale
4219         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4220         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4221         _cflags_speed='-O2'
4222         _cflags_size='-Os'
4223         _flags_filter='filter_out -Wdisabled-optimization'
4224     elif $_cc -v 2>&1 | grep -q Open64; then
4225         _type=open64
4226         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4227         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4228         _cflags_speed='-O2'
4229         _cflags_size='-Os'
4230         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4231     elif $_cc -V 2>&1 | grep -q Portland; then
4232         _type=pgi
4233         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4234         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4235         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4236         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4237         _cflags_noopt="-O"
4238         _flags_filter=pgi_flags
4239     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4240         _type=armasm
4241         _ident=$($_cc | head -n1)
4242         # 4509: "This form of conditional instruction is deprecated"
4243         _flags="-nologo -ignore 4509"
4244         _flags_filter=armasm_flags
4245     elif $_cc 2>&1 | grep -q Intel; then
4246         _type=icl
4247         _ident=$($_cc 2>&1 | head -n1)
4248         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4249         # Not only is O3 broken on 13.x+ but it is slower on all previous
4250         # versions (tested) as well.
4251         _cflags_speed="-O2"
4252         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4253         if $_cc 2>&1 | grep -q Linker; then
4254             _ld_o='-out:$@'
4255         else
4256             _ld_o='-Fe$@'
4257         fi
4258         _cc_o='-Fo$@'
4259         _cc_e='-P'
4260         _flags_filter=icl_flags
4261         _ld_lib='lib%.a'
4262         _ld_path='-libpath:'
4263         # -Qdiag-error to make icl error when seeing certain unknown arguments
4264         _flags='-nologo -Qdiag-error:4044,10157'
4265         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4266         # with MSVC which enables it by default.
4267         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4268         disable stripping
4269     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4270         # lld can emulate multiple different linkers; in ms link.exe mode,
4271         # the -? parameter gives the help output which contains an identifyable
4272         # string, while it gives an error in other modes.
4273         _type=lld-link
4274         # The link.exe mode doesn't have a switch for getting the version,
4275         # but we can force it back to gnu mode and get the version from there.
4276         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4277         _ld_o='-out:$@'
4278         _flags_filter=msvc_flags
4279         _ld_lib='lib%.a'
4280         _ld_path='-libpath:'
4281     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4282         _type=msvc
4283         _ident=$($_cc 2>&1 | head -n1)
4284         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4285         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4286         _cflags_speed="-O2"
4287         _cflags_size="-O1"
4288         _cflags_noopt="-O1"
4289         if $_cc -nologo- 2>&1 | grep -q Linker; then
4290             _ld_o='-out:$@'
4291         else
4292             _ld_o='-Fe$@'
4293         fi
4294         _cc_o='-Fo$@'
4295         _cc_e='-P -Fi$@'
4296         _flags_filter=msvc_flags
4297         _ld_lib='lib%.a'
4298         _ld_path='-libpath:'
4299         _flags='-nologo'
4300         disable stripping
4301     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4302         _type=cparser
4303         _ident=$($_cc --version | head -n1)
4304         _depflags='-MMD'
4305         _cflags_speed='-O4'
4306         _cflags_size='-O2'
4307         _flags_filter=cparser_flags
4308     fi
4309
4310     eval ${pfx}_type=\$_type
4311     eval ${pfx}_ident=\$_ident
4312 }
4313
4314 set_ccvars(){
4315     eval ${1}_C=\${_cc_c-\${${1}_C}}
4316     eval ${1}_E=\${_cc_e-\${${1}_E}}
4317     eval ${1}_O=\${_cc_o-\${${1}_O}}
4318
4319     if [ -n "$_depflags" ]; then
4320         eval ${1}_DEPFLAGS=\$_depflags
4321     else
4322         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4323         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4324         eval DEP${1}FLAGS=\$_flags
4325     fi
4326 }
4327
4328 probe_cc cc "$cc" "true"
4329 cflags_filter=$_flags_filter
4330 cflags_speed=$_cflags_speed
4331 cflags_size=$_cflags_size
4332 cflags_noopt=$_cflags_noopt
4333 add_cflags $_flags $_cflags
4334 cc_ldflags=$_ldflags
4335 set_ccvars CC
4336 set_ccvars CXX
4337
4338 probe_cc hostcc "$host_cc"
4339 host_cflags_filter=$_flags_filter
4340 host_cflags_speed=$_cflags_speed
4341 add_host_cflags  $_flags $_cflags
4342 set_ccvars HOSTCC
4343
4344 test -n "$cc_type" && enable $cc_type ||
4345     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4346
4347 : ${as_default:=$cc}
4348 : ${objcc_default:=$cc}
4349 : ${dep_cc_default:=$cc}
4350 : ${ld_default:=$cc}
4351 : ${host_ld_default:=$host_cc}
4352 set_default ar as objcc dep_cc ld ln_s host_ld windres
4353
4354 probe_cc as "$as"
4355 asflags_filter=$_flags_filter
4356 add_asflags $_flags $_cflags
4357 set_ccvars AS
4358
4359 probe_cc objcc "$objcc"
4360 objcflags_filter=$_flags_filter
4361 add_objcflags $_flags $_cflags
4362 set_ccvars OBJC
4363
4364 probe_cc ld "$ld"
4365 ldflags_filter=$_flags_filter
4366 add_ldflags $_flags $_ldflags
4367 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4368 LD_O=${_ld_o-$LD_O}
4369 LD_LIB=${_ld_lib-$LD_LIB}
4370 LD_PATH=${_ld_path-$LD_PATH}
4371
4372 probe_cc hostld "$host_ld"
4373 host_ldflags_filter=$_flags_filter
4374 add_host_ldflags $_flags $_ldflags
4375 HOSTLD_O=${_ld_o-$HOSTLD_O}
4376
4377 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4378     probe_cc depcc "$dep_cc"
4379     CCDEP=${_DEPCMD:-$DEPCMD}
4380     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4381     DEPCCFLAGS=$_flags
4382 fi
4383
4384 if $ar 2>&1 | grep -q Microsoft; then
4385     arflags="-nologo"
4386     ar_o='-out:$@'
4387 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4388     arflags="rq"
4389     ar_o='$@'
4390 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4391     arflags='-Xany -r -c'
4392     ar_o='$@'
4393 elif $ar 2>&1 | grep -q "\[D\] "; then
4394     arflags="rcD"
4395     ar_o='$@'
4396 else
4397     arflags="rc"
4398     ar_o='$@'
4399 fi
4400
4401 add_cflags $extra_cflags
4402 add_cxxflags $extra_cxxflags
4403 add_objcflags $extra_objcflags
4404 add_asflags $extra_cflags
4405
4406 if test -n "$sysroot"; then
4407     case "$cc_type" in
4408         gcc|llvm_gcc|clang)
4409             add_cppflags --sysroot="$sysroot"
4410             add_ldflags --sysroot="$sysroot"
4411 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4412             add_cppflags -isysroot "$sysroot"
4413             add_ldflags -isysroot "$sysroot"
4414         ;;
4415         tms470)
4416             add_cppflags -I"$sysinclude"
4417             add_ldflags  --sysroot="$sysroot"
4418         ;;
4419     esac
4420 fi
4421
4422 if test "$cpu" = host; then
4423     enabled cross_compile &&
4424         die "--cpu=host makes no sense when cross-compiling."
4425
4426     case "$cc_type" in
4427         gcc|llvm_gcc)
4428             check_native(){
4429                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4430                 sed -n "/cc1.*$1=/{
4431                             s/.*$1=\\([^ ]*\\).*/\\1/
4432                             p
4433                             q
4434                         }" $TMPE
4435             }
4436             cpu=$(check_native -march || check_native -mcpu)
4437         ;;
4438         clang)
4439             check_native(){
4440                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4441                 sed -n "/cc1.*-target-cpu /{
4442                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4443                             p
4444                             q
4445                         }" $TMPE
4446             }
4447             cpu=$(check_native -march)
4448         ;;
4449     esac
4450
4451     test "${cpu:-host}" = host &&
4452         die "--cpu=host not supported with compiler $cc"
4453 fi
4454
4455 # Deal with common $arch aliases
4456 case "$arch" in
4457     aarch64|arm64)
4458         arch="aarch64"
4459     ;;
4460     arm*|iPad*|iPhone*)
4461         arch="arm"
4462     ;;
4463     mips*|IP*)
4464         case "$arch" in
4465         *el)
4466             add_cppflags -EL
4467             add_ldflags -EL
4468         ;;
4469         *eb)
4470             add_cppflags -EB
4471             add_ldflags -EB
4472         ;;
4473         esac
4474         arch="mips"
4475     ;;
4476     parisc*|hppa*)
4477         arch="parisc"
4478     ;;
4479     "Power Macintosh"|ppc*|powerpc*)
4480         arch="ppc"
4481     ;;
4482     s390|s390x)
4483         arch="s390"
4484     ;;
4485     sh4|sh)
4486         arch="sh4"
4487     ;;
4488     sun4*|sparc*)
4489         arch="sparc"
4490     ;;
4491     tilegx|tile-gx)
4492         arch="tilegx"
4493     ;;
4494     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4495         arch="x86"
4496     ;;
4497 esac
4498
4499 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4500 enable $arch
4501
4502 # Add processor-specific flags
4503 if enabled aarch64; then
4504
4505     case $cpu in
4506         armv*)
4507             cpuflags="-march=$cpu"
4508         ;;
4509         *)
4510             cpuflags="-mcpu=$cpu"
4511         ;;
4512     esac
4513
4514 elif enabled alpha; then
4515
4516     cpuflags="-mcpu=$cpu"
4517
4518 elif enabled arm; then
4519
4520     check_arm_arch() {
4521         check_cpp_condition stddef.h \
4522             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4523             $cpuflags
4524     }
4525
4526     probe_arm_arch() {
4527         if   check_arm_arch 4;        then echo armv4
4528         elif check_arm_arch 4T;       then echo armv4t
4529         elif check_arm_arch 5;        then echo armv5
4530         elif check_arm_arch 5E;       then echo armv5e
4531         elif check_arm_arch 5T;       then echo armv5t
4532         elif check_arm_arch 5TE;      then echo armv5te
4533         elif check_arm_arch 5TEJ;     then echo armv5te
4534         elif check_arm_arch 6;        then echo armv6
4535         elif check_arm_arch 6J;       then echo armv6j
4536         elif check_arm_arch 6K;       then echo armv6k
4537         elif check_arm_arch 6Z;       then echo armv6z
4538         elif check_arm_arch 6ZK;      then echo armv6zk
4539         elif check_arm_arch 6T2;      then echo armv6t2
4540         elif check_arm_arch 7;        then echo armv7
4541         elif check_arm_arch 7A  7_A;  then echo armv7-a
4542         elif check_arm_arch 7S;       then echo armv7-a
4543         elif check_arm_arch 7R  7_R;  then echo armv7-r
4544         elif check_arm_arch 7M  7_M;  then echo armv7-m
4545         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4546         elif check_arm_arch 8A  8_A;  then echo armv8-a
4547         fi
4548     }
4549
4550     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4551
4552     case $cpu in
4553         armv*)
4554             cpuflags="-march=$cpu"
4555             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4556         ;;
4557         *)
4558             cpuflags="-mcpu=$cpu"
4559             case $cpu in
4560                 cortex-a*)                               subarch=armv7a  ;;
4561                 cortex-r*)                               subarch=armv7r  ;;
4562                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4563                 arm11*)                                  subarch=armv6   ;;
4564                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4565                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4566                 *)                             subarch=$(probe_arm_arch) ;;
4567             esac
4568         ;;
4569     esac
4570
4571     case "$subarch" in
4572         armv5t*)    enable fast_clz                ;;
4573         armv[6-8]*)
4574             enable fast_clz
4575             disabled fast_unaligned || enable fast_unaligned
4576             ;;
4577     esac
4578
4579 elif enabled avr32; then
4580
4581     case $cpu in
4582         ap7[02]0[0-2])
4583             subarch="avr32_ap"
4584             cpuflags="-mpart=$cpu"
4585         ;;
4586         ap)
4587             subarch="avr32_ap"
4588             cpuflags="-march=$cpu"
4589         ;;
4590         uc3[ab]*)
4591             subarch="avr32_uc"
4592             cpuflags="-mcpu=$cpu"
4593         ;;
4594         uc)
4595             subarch="avr32_uc"
4596             cpuflags="-march=$cpu"
4597         ;;
4598     esac
4599
4600 elif enabled bfin; then
4601
4602     cpuflags="-mcpu=$cpu"
4603
4604 elif enabled mips; then
4605
4606     cpuflags="-march=$cpu"
4607
4608     if [ "$cpu" != "generic" ]; then
4609         disable mips32r2
4610         disable mips32r5
4611         disable mips64r2
4612         disable mips32r6
4613         disable mips64r6
4614         disable loongson2
4615         disable loongson3
4616
4617         case $cpu in
4618             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4619                 enable mips32r2
4620                 disable msa
4621             ;;
4622             p5600|i6400|p6600)
4623                 disable mipsdsp
4624                 disable mipsdspr2
4625             ;;
4626             loongson*)
4627                 enable loongson2
4628                 enable loongson3
4629                 enable local_aligned_8 local_aligned_16 local_aligned_32
4630                 enable simd_align_16
4631                 enable fast_64bit
4632                 enable fast_clz
4633                 enable fast_cmov
4634                 enable fast_unaligned
4635                 disable aligned_stack
4636                 disable mipsfpu
4637                 disable mipsdsp
4638                 disable mipsdspr2
4639                 case $cpu in
4640                     loongson3*)
4641                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4642                     ;;
4643                     loongson2e)
4644                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4645                     ;;
4646                     loongson2f)
4647                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4648                     ;;
4649                 esac
4650             ;;
4651             *)
4652                 # Unknown CPU. Disable everything.
4653                 warn "unknown CPU. Disabling all MIPS optimizations."
4654                 disable mipsfpu
4655                 disable mipsdsp
4656                 disable mipsdspr2
4657                 disable msa
4658                 disable mmi
4659             ;;
4660         esac
4661
4662         case $cpu in
4663             24kc)
4664                 disable mipsfpu
4665                 disable mipsdsp
4666                 disable mipsdspr2
4667             ;;
4668             24kf*)
4669                 disable mipsdsp
4670                 disable mipsdspr2
4671             ;;
4672             24kec|34kc|1004kc)
4673                 disable mipsfpu
4674                 disable mipsdspr2
4675             ;;
4676             24kef*|34kf*|1004kf*)
4677                 disable mipsdspr2
4678             ;;
4679             74kc)
4680                 disable mipsfpu
4681             ;;
4682             p5600)
4683                 enable mips32r5
4684                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4685             ;;
4686             i6400)
4687                 enable mips64r6
4688                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4689             ;;
4690             p6600)
4691                 enable mips64r6
4692                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4693             ;;
4694         esac
4695     else
4696         # We do not disable anything. Is up to the user to disable the unwanted features.
4697         warn 'generic cpu selected'
4698     fi
4699
4700 elif enabled ppc; then
4701
4702     disable ldbrx
4703
4704     case $(tolower $cpu) in
4705         601|ppc601|powerpc601)
4706             cpuflags="-mcpu=601"
4707             disable altivec
4708         ;;
4709         603*|ppc603*|powerpc603*)
4710             cpuflags="-mcpu=603"
4711             disable altivec
4712         ;;
4713         604*|ppc604*|powerpc604*)
4714             cpuflags="-mcpu=604"
4715             disable altivec
4716         ;;
4717         g3|75*|ppc75*|powerpc75*)
4718             cpuflags="-mcpu=750"
4719             disable altivec
4720         ;;
4721         g4|745*|ppc745*|powerpc745*)
4722             cpuflags="-mcpu=7450"
4723             disable vsx
4724         ;;
4725         74*|ppc74*|powerpc74*)
4726             cpuflags="-mcpu=7400"
4727             disable vsx
4728         ;;
4729         g5|970|ppc970|powerpc970)
4730             cpuflags="-mcpu=970"
4731             disable vsx
4732         ;;
4733         power[3-6]*)
4734             cpuflags="-mcpu=$cpu"
4735             disable vsx
4736         ;;
4737         power[7-8]*)
4738             cpuflags="-mcpu=$cpu"
4739         ;;
4740         cell)
4741             cpuflags="-mcpu=cell"
4742             enable ldbrx
4743             disable vsx
4744         ;;
4745         e500mc)
4746             cpuflags="-mcpu=e500mc"
4747             disable altivec
4748         ;;
4749         e500v2)
4750             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4751             disable altivec
4752             disable dcbzl
4753         ;;
4754         e500)
4755             cpuflags="-mcpu=8540 -mhard-float"
4756             disable altivec
4757             disable dcbzl
4758         ;;
4759     esac
4760
4761 elif enabled sparc; then
4762
4763     case $cpu in
4764         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4765             cpuflags="-mcpu=$cpu"
4766         ;;
4767         ultrasparc*|niagara[234])
4768             cpuflags="-mcpu=$cpu"
4769         ;;
4770     esac
4771
4772 elif enabled x86; then
4773
4774     case $cpu in
4775         i[345]86|pentium)
4776             cpuflags="-march=$cpu"
4777             disable i686
4778             disable mmx
4779         ;;
4780         # targets that do NOT support nopl and conditional mov (cmov)
4781         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4782             cpuflags="-march=$cpu"
4783             disable i686
4784         ;;
4785         # targets that do support nopl and conditional mov (cmov)
4786         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4787         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4788         |amdfam10|barcelona|b[dt]ver*|znver*)
4789             cpuflags="-march=$cpu"
4790             enable i686
4791             enable fast_cmov
4792         ;;
4793         # targets that do support conditional mov but on which it's slow
4794         pentium4|pentium4m|prescott|nocona)
4795             cpuflags="-march=$cpu"
4796             enable i686
4797             disable fast_cmov
4798         ;;
4799     esac
4800
4801 fi
4802
4803 if [ "$cpu" != generic ]; then
4804     add_cflags  $cpuflags
4805     add_asflags $cpuflags
4806     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4807 fi
4808
4809 # compiler sanity check
4810 check_exec <<EOF
4811 int main(void){ return 0; }
4812 EOF
4813 if test "$?" != 0; then
4814     echo "$cc is unable to create an executable file."
4815     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4816         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4817         echo "Only do this if you know what cross compiling means."
4818     fi
4819     die "C compiler test failed."
4820 fi
4821
4822 add_cppflags -D_ISOC99_SOURCE
4823 add_cxxflags -D__STDC_CONSTANT_MACROS
4824 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4825
4826 # some compilers silently accept -std=c11, so we also need to check that the
4827 # version macro is defined properly
4828 check_cpp_condition ctype.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
4829     add_cflags -std=c11 ||
4830     check_cflags -std=c99
4831
4832 check_cppflags -D_FILE_OFFSET_BITS=64
4833 check_cppflags -D_LARGEFILE_SOURCE
4834
4835 add_host_cppflags -D_ISOC99_SOURCE
4836 check_host_cflags -std=c99
4837 check_host_cflags -Wall
4838 check_host_cflags $host_cflags_speed
4839
4840 check_64bit(){
4841     arch32=$1
4842     arch64=$2
4843     expr=$3
4844     check_code cc "" "int test[2*($expr) - 1]" &&
4845         subarch=$arch64 || subarch=$arch32
4846 }
4847
4848 case "$arch" in
4849     aarch64|alpha|ia64)
4850         spic=$shared
4851     ;;
4852     mips)
4853         check_64bit mips mips64 '_MIPS_SIM > 1'
4854         spic=$shared
4855     ;;
4856     parisc)
4857         check_64bit parisc parisc64 'sizeof(void *) > 4'
4858         spic=$shared
4859     ;;
4860     ppc)
4861         check_64bit ppc ppc64 'sizeof(void *) > 4'
4862         spic=$shared
4863     ;;
4864     s390)
4865         check_64bit s390 s390x 'sizeof(void *) > 4'
4866         spic=$shared
4867     ;;
4868     sparc)
4869         check_64bit sparc sparc64 'sizeof(void *) > 4'
4870         spic=$shared
4871     ;;