Merge commit '49804dc2baec009577e6b4ee827ae562188fbc2f'
[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
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build (deprecated) [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Individual component options:
152   --disable-everything     disable all components listed below
153   --disable-encoder=NAME   disable encoder NAME
154   --enable-encoder=NAME    enable encoder NAME
155   --disable-encoders       disable all encoders
156   --disable-decoder=NAME   disable decoder NAME
157   --enable-decoder=NAME    enable decoder NAME
158   --disable-decoders       disable all decoders
159   --disable-hwaccel=NAME   disable hwaccel NAME
160   --enable-hwaccel=NAME    enable hwaccel NAME
161   --disable-hwaccels       disable all hwaccels
162   --disable-muxer=NAME     disable muxer NAME
163   --enable-muxer=NAME      enable muxer NAME
164   --disable-muxers         disable all muxers
165   --disable-demuxer=NAME   disable demuxer NAME
166   --enable-demuxer=NAME    enable demuxer NAME
167   --disable-demuxers       disable all demuxers
168   --enable-parser=NAME     enable parser NAME
169   --disable-parser=NAME    disable parser NAME
170   --disable-parsers        disable all parsers
171   --enable-bsf=NAME        enable bitstream filter NAME
172   --disable-bsf=NAME       disable bitstream filter NAME
173   --disable-bsfs           disable all bitstream filters
174   --enable-protocol=NAME   enable protocol NAME
175   --disable-protocol=NAME  disable protocol NAME
176   --disable-protocols      disable all protocols
177   --enable-indev=NAME      enable input device NAME
178   --disable-indev=NAME     disable input device NAME
179   --disable-indevs         disable input devices
180   --enable-outdev=NAME     enable output device NAME
181   --disable-outdev=NAME    disable output device NAME
182   --disable-outdevs        disable output devices
183   --disable-devices        disable all devices
184   --enable-filter=NAME     enable filter NAME
185   --disable-filter=NAME    disable filter NAME
186   --disable-filters        disable all filters
187
188 External library support:
189
190   Using any of the following switches will allow FFmpeg to link to the
191   corresponding external library. All the components depending on that library
192   will become enabled, if all their other dependencies are met and they are not
193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
194   libwavpack and allow the libwavpack encoder to be built, unless it is
195   specifically disabled with --disable-encoder=libwavpack.
196
197   Note that only the system libraries are auto-detected. All the other external
198   libraries must be explicitly enabled.
199
200   Also note that the following help text describes the purpose of the libraries
201   themselves, not all their features will necessarily be usable by FFmpeg.
202
203   --disable-alsa           disable ALSA support [autodetect]
204   --disable-appkit         disable Apple AppKit framework [autodetect]
205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
206   --enable-avisynth        enable reading of AviSynth script files [no]
207   --disable-bzlib          disable bzlib [autodetect]
208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
210   --enable-frei0r          enable frei0r video filtering [no]
211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
212                            if openssl, librtmp or gmp is not used [no]
213   --enable-gmp             enable gmp, needed for rtmp(t)e support
214                            if openssl or librtmp is not used [no]
215   --enable-gnutls          enable gnutls, needed for https support
216                            if openssl or libtls is not used [no]
217   --disable-iconv          disable iconv [autodetect]
218   --enable-jni             enable JNI support [no]
219   --enable-ladspa          enable LADSPA audio filtering [no]
220   --enable-libass          enable libass subtitles rendering,
221                            needed for subtitles and ass filter [no]
222   --enable-libbluray       enable BluRay reading using libbluray [no]
223   --enable-libbs2b         enable bs2b DSP library [no]
224   --enable-libcaca         enable textual display using libcaca [no]
225   --enable-libcelt         enable CELT decoding via libcelt [no]
226   --enable-libcdio         enable audio CD grabbing with libcdio [no]
227   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
228   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
229                            and libraw1394 [no]
230   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
231   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
232   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
233   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
234   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
235   --enable-libgme          enable Game Music Emu via libgme [no]
236   --enable-libgsm          enable GSM de/encoding via libgsm [no]
237   --enable-libiec61883     enable iec61883 via libiec61883 [no]
238   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
239   --enable-libjack         enable JACK audio sound server [no]
240   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
241   --enable-libmodplug      enable ModPlug via libmodplug [no]
242   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
243   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
244   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
245   --enable-libopencv       enable video filtering via libopencv [no]
246   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
247   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
248   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
249   --enable-libopus         enable Opus de/encoding via libopus [no]
250   --enable-libpulse        enable Pulseaudio input via libpulse [no]
251   --enable-librsvg         enable SVG rasterization via librsvg [no]
252   --enable-librubberband   enable rubberband needed for rubberband filter [no]
253   --enable-librtmp         enable RTMP[E] support via librtmp [no]
254   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
255   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
256   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
257   --enable-libsoxr         enable Include libsoxr resampling [no]
258   --enable-libspeex        enable Speex de/encoding via libspeex [no]
259   --enable-libssh          enable SFTP protocol via libssh [no]
260   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
261   --enable-libtheora       enable Theora encoding via libtheora [no]
262   --enable-libtls          enable LibreSSL (via libtls), needed for https support
263                            if openssl or gnutls is not used [no]
264   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
265   --enable-libv4l2         enable libv4l2/v4l-utils [no]
266   --enable-libvidstab      enable video stabilization using vid.stab [no]
267   --enable-libvmaf         enable vmaf filter via libvmaf [no]
268   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
269   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
270                            native implementation exists [no]
271   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
272   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
273   --enable-libwebp         enable WebP encoding via libwebp [no]
274   --enable-libx264         enable H.264 encoding via x264 [no]
275   --enable-libx265         enable HEVC encoding via x265 [no]
276   --enable-libxavs         enable AVS encoding via xavs [no]
277   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
278   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
279   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
280   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
281   --enable-libxvid         enable Xvid encoding via xvidcore,
282                            native MPEG-4/Xvid encoder exists [no]
283   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
284   --enable-libzimg         enable z.lib, needed for zscale filter [no]
285   --enable-libzmq          enable message passing via libzmq [no]
286   --enable-libzvbi         enable teletext support via libzvbi [no]
287   --enable-lv2             enable LV2 audio filtering [no]
288   --disable-lzma           disable lzma [autodetect]
289   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
290   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
291   --enable-mediacodec      enable Android MediaCodec support [no]
292   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
293   --enable-openal          enable OpenAL 1.1 capture support [no]
294   --enable-opencl          enable OpenCL processing [no]
295   --enable-opengl          enable OpenGL rendering [no]
296   --enable-openssl         enable openssl, needed for https support
297                            if gnutls or libtls is not used [no]
298   --disable-sndio          disable sndio support [autodetect]
299   --disable-schannel       disable SChannel SSP, needed for TLS support on
300                            Windows if openssl and gnutls are not used [autodetect]
301   --disable-sdl2           disable sdl2 [autodetect]
302   --disable-securetransport disable Secure Transport, needed for TLS support
303                            on OSX if openssl and gnutls are not used [autodetect]
304   --disable-xlib           disable xlib [autodetect]
305   --disable-zlib           disable zlib [autodetect]
306
307   The following libraries provide various hardware acceleration features:
308   --disable-amf            disable AMF video encoding code [autodetect]
309   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
310   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
311   --disable-cuvid          disable Nvidia CUVID support [autodetect]
312   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
313   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
314   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
315   --enable-libdrm          enable DRM code (Linux) [no]
316   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
317   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
318   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
319   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
320   --disable-nvenc          disable Nvidia video encoding code [autodetect]
321   --enable-omx             enable OpenMAX IL code [no]
322   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
323   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
324   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
325   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
326   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
327   --disable-videotoolbox   disable VideoToolbox code [autodetect]
328
329 Toolchain options:
330   --arch=ARCH              select architecture [$arch]
331   --cpu=CPU                select the minimum required CPU (affects
332                            instruction selection, may crash on older CPUs)
333   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
334   --progs-suffix=SUFFIX    program name suffix []
335   --enable-cross-compile   assume a cross-compiler is used
336   --sysroot=PATH           root of cross-build tree
337   --sysinclude=PATH        location of cross-build system headers
338   --target-os=OS           compiler targets OS [$target_os]
339   --target-exec=CMD        command to run executables on target
340   --target-path=DIR        path to view of build directory on target
341   --target-samples=DIR     path to samples directory on target
342   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
343   --toolchain=NAME         set tool defaults according to NAME
344   --nm=NM                  use nm tool NM [$nm_default]
345   --ar=AR                  use archive tool AR [$ar_default]
346   --as=AS                  use assembler AS [$as_default]
347   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
348   --strip=STRIP            use strip tool STRIP [$strip_default]
349   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
350   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
351   --cc=CC                  use C compiler CC [$cc_default]
352   --cxx=CXX                use C compiler CXX [$cxx_default]
353   --objcc=OCC              use ObjC compiler OCC [$cc_default]
354   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
355   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
356   --ld=LD                  use linker LD [$ld_default]
357   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
358   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
359   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
360   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
361   --host-cc=HOSTCC         use host C compiler HOSTCC
362   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
363   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
364   --host-ld=HOSTLD         use host linker HOSTLD
365   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
366   --host-libs=HLIBS        use libs HLIBS when linking for host
367   --host-os=OS             compiler host OS [$target_os]
368   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
369   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
370   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
371   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
372   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
373   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
374   --extra-libs=ELIBS       add ELIBS [$ELIBS]
375   --extra-version=STRING   version string suffix []
376   --optflags=OPTFLAGS      override optimization-related compiler flags
377   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
378   --build-suffix=SUFFIX    library name suffix []
379   --enable-pic             build position-independent code
380   --enable-thumb           compile for Thumb instruction set
381   --enable-lto             use link-time optimization
382   --env="ENV=override"     override the environment variables
383
384 Advanced options (experts only):
385   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
386   --custom-allocator=NAME  use a supported custom allocator
387   --disable-symver         disable symbol versioning
388   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
389   --disable-safe-bitstream-reader
390                            disable buffer boundary checking in bitreaders
391                            (faster, but may crash)
392   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
393
394 Optimization options (experts only):
395   --disable-asm            disable all assembly optimizations
396   --disable-altivec        disable AltiVec optimizations
397   --disable-vsx            disable VSX optimizations
398   --disable-power8         disable POWER8 optimizations
399   --disable-amd3dnow       disable 3DNow! optimizations
400   --disable-amd3dnowext    disable 3DNow! extended optimizations
401   --disable-mmx            disable MMX optimizations
402   --disable-mmxext         disable MMXEXT optimizations
403   --disable-sse            disable SSE optimizations
404   --disable-sse2           disable SSE2 optimizations
405   --disable-sse3           disable SSE3 optimizations
406   --disable-ssse3          disable SSSE3 optimizations
407   --disable-sse4           disable SSE4 optimizations
408   --disable-sse42          disable SSE4.2 optimizations
409   --disable-avx            disable AVX optimizations
410   --disable-xop            disable XOP optimizations
411   --disable-fma3           disable FMA3 optimizations
412   --disable-fma4           disable FMA4 optimizations
413   --disable-avx2           disable AVX2 optimizations
414   --disable-avx512         disable AVX-512 optimizations
415   --disable-aesni          disable AESNI optimizations
416   --disable-armv5te        disable armv5te optimizations
417   --disable-armv6          disable armv6 optimizations
418   --disable-armv6t2        disable armv6t2 optimizations
419   --disable-vfp            disable VFP optimizations
420   --disable-neon           disable NEON optimizations
421   --disable-inline-asm     disable use of inline assembly
422   --disable-x86asm         disable use of standalone x86 assembly
423   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
424   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
425   --disable-msa            disable MSA optimizations
426   --disable-mipsfpu        disable floating point MIPS optimizations
427   --disable-mmi            disable Loongson SIMD optimizations
428   --disable-fast-unaligned consider unaligned accesses slow
429
430 Developer options (useful when working on FFmpeg itself):
431   --disable-debug          disable debugging symbols
432   --enable-debug=LEVEL     set the debug level [$debuglevel]
433   --disable-optimizations  disable compiler optimizations
434   --enable-extra-warnings  enable more compiler warnings
435   --disable-stripping      disable stripping of executables and shared libraries
436   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
437                            2 causes a slowdown at runtime.
438   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
439   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
440                            leaks and errors, using the specified valgrind binary.
441                            Cannot be combined with --target-exec
442   --enable-ftrapv          Trap arithmetic overflows
443   --samples=PATH           location of test samples for FATE, if not set use
444                            \$FATE_SAMPLES at make invocation time.
445   --enable-neon-clobber-test check NEON registers for clobbering (should be
446                            used only for debugging purposes)
447   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
448                            should be used only for debugging purposes)
449   --enable-random          randomly enable/disable components
450   --disable-random
451   --enable-random=LIST     randomly enable/disable specific components or
452   --disable-random=LIST    component groups. LIST is a comma-separated list
453                            of NAME[:PROB] entries where NAME is a component
454                            (group) and PROB the probability associated with
455                            NAME (default 0.5).
456   --random-seed=VALUE      seed value for --enable/disable-random
457   --disable-valgrind-backtrace do not print a backtrace under Valgrind
458                            (only applies to --disable-optimizations builds)
459   --enable-osfuzz          Enable building fuzzer tool
460   --libfuzzer=PATH         path to libfuzzer
461   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
462                            in the name) of tests whose result is ignored
463   --enable-linux-perf      enable Linux Performance Monitor API
464
465 NOTE: Object files are built at the place where configure is launched.
466 EOF
467   exit 0
468 }
469
470 if test -t 1 && which tput >/dev/null 2>&1; then
471     ncolors=$(tput colors)
472     if test -n "$ncolors" && test $ncolors -ge 8; then
473         bold_color=$(tput bold)
474         warn_color=$(tput setaf 3)
475         error_color=$(tput setaf 1)
476         reset_color=$(tput sgr0)
477     fi
478     # 72 used instead of 80 since that's the default of pr
479     ncols=$(tput cols)
480 fi
481 : ${ncols:=72}
482
483 log(){
484     echo "$@" >> $logfile
485 }
486
487 log_file(){
488     log BEGIN $1
489     pr -n -t $1 >> $logfile
490     log END $1
491 }
492
493 warn(){
494     log "WARNING: $*"
495     WARNINGS="${WARNINGS}WARNING: $*\n"
496 }
497
498 die(){
499     log "$@"
500     echo "$error_color$bold_color$@$reset_color"
501     cat <<EOF
502
503 If you think configure made a mistake, make sure you are using the latest
504 version from Git.  If the latest version fails, report the problem to the
505 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
506 EOF
507     if disabled logging; then
508         cat <<EOF
509 Rerun configure with logging enabled (do not use --disable-logging), and
510 include the log this produces with your report.
511 EOF
512     else
513         cat <<EOF
514 Include the log file "$logfile" produced by configure as this will help
515 solve the problem.
516 EOF
517     fi
518     exit 1
519 }
520
521 # Avoid locale weirdness, besides we really just want to translate ASCII.
522 toupper(){
523     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
524 }
525
526 tolower(){
527     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
528 }
529
530 c_escape(){
531     echo "$*" | sed 's/["\\]/\\\0/g'
532 }
533
534 sh_quote(){
535     v=$(echo "$1" | sed "s/'/'\\\\''/g")
536     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
537     echo "$v"
538 }
539
540 cleanws(){
541     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
542 }
543
544 filter(){
545     pat=$1
546     shift
547     for v; do
548         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
549     done
550 }
551
552 filter_out(){
553     pat=$1
554     shift
555     for v; do
556         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
557     done
558 }
559
560 map(){
561     m=$1
562     shift
563     for v; do eval $m; done
564 }
565
566 add_suffix(){
567     suffix=$1
568     shift
569     for v; do echo ${v}${suffix}; done
570 }
571
572 remove_suffix(){
573     suffix=$1
574     shift
575     for v; do echo ${v%$suffix}; done
576 }
577
578 set_all(){
579     value=$1
580     shift
581     for var in $*; do
582         eval $var=$value
583     done
584 }
585
586 set_weak(){
587     value=$1
588     shift
589     for var; do
590         eval : \${$var:=$value}
591     done
592 }
593
594 sanitize_var_name(){
595     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
596 }
597
598 set_sanitized(){
599     var=$1
600     shift
601     eval $(sanitize_var_name "$var")='$*'
602 }
603
604 get_sanitized(){
605     eval echo \$$(sanitize_var_name "$1")
606 }
607
608 pushvar(){
609     for pvar in $*; do
610         eval level=\${${pvar}_level:=0}
611         eval ${pvar}_${level}="\$$pvar"
612         eval ${pvar}_level=$(($level+1))
613     done
614 }
615
616 popvar(){
617     for pvar in $*; do
618         eval level=\${${pvar}_level:-0}
619         test $level = 0 && continue
620         eval level=$(($level-1))
621         eval $pvar="\${${pvar}_${level}}"
622         eval ${pvar}_level=$level
623         eval unset ${pvar}_${level}
624     done
625 }
626
627 request(){
628     for var in $*; do
629         eval ${var}_requested=yes
630         eval $var=
631     done
632 }
633
634 enable(){
635     set_all yes $*
636 }
637
638 disable(){
639     set_all no $*
640 }
641
642 enable_weak(){
643     set_weak yes $*
644 }
645
646 disable_weak(){
647     set_weak no $*
648 }
649
650 enable_sanitized(){
651     for var; do
652         enable $(sanitize_var_name $var)
653     done
654 }
655
656 disable_sanitized(){
657     for var; do
658         disable $(sanitize_var_name $var)
659     done
660 }
661
662 do_enable_deep(){
663     for var; do
664         enabled $var && continue
665         eval sel="\$${var}_select"
666         eval sgs="\$${var}_suggest"
667         pushvar var sgs
668         enable_deep $sel
669         popvar sgs
670         enable_deep_weak $sgs
671         popvar var
672     done
673 }
674
675 enable_deep(){
676     do_enable_deep $*
677     enable $*
678 }
679
680 enable_deep_weak(){
681     for var; do
682         disabled $var && continue
683         pushvar var
684         do_enable_deep $var
685         popvar var
686         enable_weak $var
687     done
688 }
689
690 requested(){
691     test "${1#!}" = "$1" && op="=" || op="!="
692     eval test "x\$${1#!}_requested" $op "xyes"
693 }
694
695 enabled(){
696     test "${1#!}" = "$1" && op="=" || op="!="
697     eval test "x\$${1#!}" $op "xyes"
698 }
699
700 disabled(){
701     test "${1#!}" = "$1" && op="=" || op="!="
702     eval test "x\$${1#!}" $op "xno"
703 }
704
705 enabled_all(){
706     for opt; do
707         enabled $opt || return 1
708     done
709 }
710
711 disabled_all(){
712     for opt; do
713         disabled $opt || return 1
714     done
715 }
716
717 enabled_any(){
718     for opt; do
719         enabled $opt && return 0
720     done
721 }
722
723 disabled_any(){
724     for opt; do
725         disabled $opt && return 0
726     done
727     return 1
728 }
729
730 set_default(){
731     for opt; do
732         eval : \${$opt:=\$${opt}_default}
733     done
734 }
735
736 is_in(){
737     value=$1
738     shift
739     for var in $*; do
740         [ $var = $value ] && return 0
741     done
742     return 1
743 }
744
745 check_deps(){
746     for cfg; do
747         enabled ${cfg}_checking && die "Circular dependency for $cfg."
748         disabled ${cfg}_checking && continue
749         enable ${cfg}_checking
750
751         eval dep_all="\$${cfg}_deps"
752         eval dep_any="\$${cfg}_deps_any"
753         eval dep_con="\$${cfg}_conflict"
754         eval dep_sel="\$${cfg}_select"
755         eval dep_sgs="\$${cfg}_suggest"
756         eval dep_ifa="\$${cfg}_if"
757         eval dep_ifn="\$${cfg}_if_any"
758
759         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
760         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
761         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
762
763         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
764         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
765         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
766         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
767         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
768         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
769
770         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
771
772         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
773             # filter out library deps, these do not belong in extralibs
774             is_in $dep $LIBRARY_LIST && continue
775             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
776         done
777
778         disable ${cfg}_checking
779     done
780 }
781
782 print_config(){
783     pfx=$1
784     files=$2
785     shift 2
786     map 'eval echo "$v \${$v:-no}"' "$@" |
787     awk "BEGIN { split(\"$files\", files) }
788         {
789             c = \"$pfx\" toupper(\$1);
790             v = \$2;
791             sub(/yes/, 1, v);
792             sub(/no/,  0, v);
793             for (f in files) {
794                 file = files[f];
795                 if (file ~ /\\.h\$/) {
796                     printf(\"#define %s %d\\n\", c, v) >>file;
797                 } else if (file ~ /\\.asm\$/) {
798                     printf(\"%%define %s %d\\n\", c, v) >>file;
799                 } else if (file ~ /\\.mak\$/) {
800                     n = -v ? \"\" : \"!\";
801                     printf(\"%s%s=yes\\n\", n, c) >>file;
802                 } else if (file ~ /\\.texi\$/) {
803                     pre = -v ? \"\" : \"@c \";
804                     yesno = \$2;
805                     c2 = tolower(c);
806                     gsub(/_/, \"-\", c2);
807                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
808                 }
809             }
810         }"
811 }
812
813 print_enabled(){
814     suf=$1
815     shift
816     for v; do
817         enabled $v && printf "%s\n" ${v%$suf}
818     done
819 }
820
821 append(){
822     var=$1
823     shift
824     eval "$var=\"\$$var $*\""
825 }
826
827 prepend(){
828     var=$1
829     shift
830     eval "$var=\"$* \$$var\""
831 }
832
833 unique(){
834     var=$1
835     uniq_list=""
836     for tok in $(eval echo \$$var); do
837         uniq_list="$(filter_out $tok $uniq_list) $tok"
838     done
839     eval "$var=\"${uniq_list}\""
840 }
841
842 resolve(){
843     var=$1
844     tmpvar=
845     for entry in $(eval echo \$$var); do
846         tmpvar="$tmpvar $(eval echo \$${entry})"
847     done
848     eval "$var=\"${tmpvar}\""
849 }
850
851 add_cppflags(){
852     append CPPFLAGS "$@"
853 }
854
855 add_cflags(){
856     append CFLAGS $($cflags_filter "$@")
857 }
858
859 add_cflags_headers(){
860     append CFLAGS_HEADERS $($cflags_filter "$@")
861 }
862
863 add_cxxflags(){
864     append CXXFLAGS $($cflags_filter "$@")
865 }
866
867 add_asflags(){
868     append ASFLAGS $($asflags_filter "$@")
869 }
870
871 add_objcflags(){
872     append OBJCFLAGS $($objcflags_filter "$@")
873 }
874
875 add_ldflags(){
876     append LDFLAGS $($ldflags_filter "$@")
877 }
878
879 add_ldexeflags(){
880     append LDEXEFLAGS $($ldflags_filter "$@")
881 }
882
883 add_ldsoflags(){
884     append LDSOFLAGS $($ldflags_filter "$@")
885 }
886
887 add_stripflags(){
888     append ASMSTRIPFLAGS "$@"
889 }
890
891 add_extralibs(){
892     prepend extralibs $($ldflags_filter "$@")
893 }
894
895 add_host_cppflags(){
896     append host_cppflags "$@"
897 }
898
899 add_host_cflags(){
900     append host_cflags $($host_cflags_filter "$@")
901 }
902
903 add_host_ldflags(){
904     append host_ldflags $($host_ldflags_filter "$@")
905 }
906
907 add_compat(){
908     append compat_objs $1
909     shift
910     map 'add_cppflags -D$v' "$@"
911 }
912
913 test_cmd(){
914     log "$@"
915     "$@" >> $logfile 2>&1
916 }
917
918 test_stat(){
919     log test_stat "$@"
920     stat "$1" >> $logfile 2>&1
921 }
922
923 cc_o(){
924     eval printf '%s\\n' $CC_O
925 }
926
927 cc_e(){
928     eval printf '%s\\n' $CC_E
929 }
930
931 test_cc(){
932     log test_cc "$@"
933     cat > $TMPC
934     log_file $TMPC
935     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
936 }
937
938 test_cxx(){
939     log test_cxx "$@"
940     cat > $TMPCPP
941     log_file $TMPCPP
942     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
943 }
944
945 test_objcc(){
946     log test_objcc "$@"
947     cat > $TMPM
948     log_file $TMPM
949     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
950 }
951
952 test_cpp(){
953     log test_cpp "$@"
954     cat > $TMPC
955     log_file $TMPC
956     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
957 }
958
959 as_o(){
960     eval printf '%s\\n' $AS_O
961 }
962
963 test_as(){
964     log test_as "$@"
965     cat > $TMPS
966     log_file $TMPS
967     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
968 }
969
970 check_inline_asm(){
971     log check_inline_asm "$@"
972     name="$1"
973     code="$2"
974     shift 2
975     disable $name
976     test_cc "$@" <<EOF && enable $name
977 void foo(void){ __asm__ volatile($code); }
978 EOF
979 }
980
981 check_inline_asm_flags(){
982     log check_inline_asm_flags "$@"
983     name="$1"
984     code="$2"
985     flags=''
986     shift 2
987     while [ "$1" != "" ]; do
988       append flags $1
989       shift
990     done;
991     disable $name
992     cat > $TMPC <<EOF
993 void foo(void){ __asm__ volatile($code); }
994 EOF
995     log_file $TMPC
996     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
997     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
998 }
999
1000 check_insn(){
1001     log check_insn "$@"
1002     check_inline_asm ${1}_inline "$2"
1003     echo "$2" | test_as && enable ${1}_external || disable ${1}_external
1004 }
1005
1006 test_x86asm(){
1007     log test_x86asm "$@"
1008     echo "$1" > $TMPS
1009     log_file $TMPS
1010     shift 1
1011     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1012 }
1013
1014 ld_o(){
1015     eval printf '%s\\n' $LD_O
1016 }
1017
1018 test_ld(){
1019     log test_ld "$@"
1020     type=$1
1021     shift 1
1022     flags=$(filter_out '-l*|*.so' $@)
1023     libs=$(filter '-l*|*.so' $@)
1024     test_$type $($cflags_filter $flags) || return
1025     flags=$($ldflags_filter $flags)
1026     libs=$($ldflags_filter $libs)
1027     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1028 }
1029
1030 print_include(){
1031     hdr=$1
1032     test "${hdr%.h}" = "${hdr}" &&
1033         echo "#include $hdr"    ||
1034         echo "#include <$hdr>"
1035 }
1036
1037 test_code(){
1038     log test_code "$@"
1039     check=$1
1040     headers=$2
1041     code=$3
1042     shift 3
1043     {
1044         for hdr in $headers; do
1045             print_include $hdr
1046         done
1047         echo "int main(void) { $code; return 0; }"
1048     } | test_$check "$@"
1049 }
1050
1051 check_cppflags(){
1052     log check_cppflags "$@"
1053     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1054 #include <stdlib.h>
1055 EOF
1056 }
1057
1058 test_cflags(){
1059     log test_cflags "$@"
1060     set -- $($cflags_filter "$@")
1061     test_cc "$@" <<EOF
1062 int x;
1063 EOF
1064 }
1065
1066 check_cflags(){
1067     log check_cflags "$@"
1068     test_cflags "$@" && add_cflags "$@"
1069 }
1070
1071 check_cxxflags(){
1072     log check_cxxflags "$@"
1073     set -- $($cflags_filter "$@")
1074     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1075 int x;
1076 EOF
1077 }
1078
1079 test_objcflags(){
1080     log test_objcflags "$@"
1081     set -- $($objcflags_filter "$@")
1082     test_objcc "$@" <<EOF
1083 int x;
1084 EOF
1085 }
1086
1087 check_objcflags(){
1088     log check_objcflags "$@"
1089     test_objcflags "$@" && add_objcflags "$@"
1090 }
1091
1092 test_ldflags(){
1093     log test_ldflags "$@"
1094     set -- $($ldflags_filter "$@")
1095     test_ld "cc" "$@" <<EOF
1096 int main(void){ return 0; }
1097 EOF
1098 }
1099
1100 check_ldflags(){
1101     log check_ldflags "$@"
1102     test_ldflags "$@" && add_ldflags "$@"
1103 }
1104
1105 test_stripflags(){
1106     log test_stripflags "$@"
1107     # call test_cc to get a fresh TMPO
1108     test_cc <<EOF
1109 int main(void) { return 0; }
1110 EOF
1111     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1112 }
1113
1114 check_stripflags(){
1115     log check_stripflags "$@"
1116     test_stripflags "$@" && add_stripflags "$@"
1117 }
1118
1119 check_header(){
1120     log check_header "$@"
1121     headers=$1
1122     shift
1123     disable_sanitized $headers
1124     {
1125         for hdr in $headers; do
1126             print_include $hdr
1127         done
1128         echo "int x;"
1129     } | test_cpp "$@" && enable_sanitized $headers
1130 }
1131
1132 check_header_objcc(){
1133     log check_header_objcc "$@"
1134     rm -f -- "$TMPO"
1135     header=$1
1136     shift
1137     disable_sanitized $header
1138     {
1139        echo "#include <$header>"
1140        echo "int main(void) { return 0; }"
1141     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1142 }
1143
1144 check_apple_framework(){
1145     log check_apple_framework "$@"
1146     framework="$1"
1147     name="$(tolower $framework)"
1148     header="${framework}/${framework}.h"
1149     disable $name
1150     check_header_objcc $header &&
1151         enable $name && eval ${name}_extralibs='"-framework $framework"'
1152 }
1153
1154 check_func(){
1155     log check_func "$@"
1156     func=$1
1157     shift
1158     disable $func
1159     test_ld "cc" "$@" <<EOF && enable $func
1160 extern int $func();
1161 int main(void){ $func(); }
1162 EOF
1163 }
1164
1165 check_complexfunc(){
1166     log check_complexfunc "$@"
1167     func=$1
1168     narg=$2
1169     shift 2
1170     test $narg = 2 && args="f, g" || args="f * I"
1171     disable $func
1172     test_ld "cc" "$@" <<EOF && enable $func
1173 #include <complex.h>
1174 #include <math.h>
1175 float foo(complex float f, complex float g) { return $func($args); }
1176 int main(void){ return (int) foo; }
1177 EOF
1178 }
1179
1180 check_mathfunc(){
1181     log check_mathfunc "$@"
1182     func=$1
1183     narg=$2
1184     shift 2
1185     test $narg = 2 && args="f, g" || args="f"
1186     disable $func
1187     test_ld "cc" "$@" <<EOF && enable $func
1188 #include <math.h>
1189 float foo(float f, float g) { return $func($args); }
1190 int main(void){ return (int) foo; }
1191 EOF
1192 }
1193
1194 check_func_headers(){
1195     log check_func_headers "$@"
1196     headers=$1
1197     funcs=$2
1198     shift 2
1199     {
1200         for hdr in $headers; do
1201             print_include $hdr
1202         done
1203         echo "#include <stdint.h>"
1204         for func in $funcs; do
1205             echo "long check_$func(void) { return (long) $func; }"
1206         done
1207         echo "int main(void) { int ret = 0;"
1208         # LTO could optimize out the test functions without this
1209         for func in $funcs; do
1210             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1211         done
1212         echo "return ret; }"
1213     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1214 }
1215
1216 check_class_headers_cpp(){
1217     log check_class_headers_cpp "$@"
1218     headers=$1
1219     classes=$2
1220     shift 2
1221     {
1222         for hdr in $headers; do
1223             echo "#include <$hdr>"
1224         done
1225         echo "int main(void) { "
1226         i=1
1227         for class in $classes; do
1228             echo "$class obj$i;"
1229             i=$(expr $i + 1)
1230         done
1231         echo "return 0; }"
1232     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1233 }
1234
1235 test_cpp_condition(){
1236     log test_cpp_condition "$@"
1237     header=$1
1238     condition=$2
1239     shift 2
1240     test_cpp "$@" <<EOF
1241 #include <$header>
1242 #if !($condition)
1243 #error "unsatisfied condition: $condition"
1244 #endif
1245 EOF
1246 }
1247
1248 test_cflags_cc(){
1249     log test_cflags_cc "$@"
1250     flags=$1
1251     header=$2
1252     condition=$3
1253     shift 3
1254     set -- $($cflags_filter "$flags")
1255     test_cc "$@" <<EOF
1256 #include <$header>
1257 #if !($condition)
1258 #error "unsatisfied condition: $condition"
1259 #endif
1260 EOF
1261 }
1262
1263 check_lib(){
1264     log check_lib "$@"
1265     name="$1"
1266     headers="$2"
1267     funcs="$3"
1268     shift 3
1269     disable $name
1270     check_func_headers "$headers" "$funcs" "$@" &&
1271         enable $name && eval ${name}_extralibs="\$@"
1272 }
1273
1274 check_lib_cpp(){
1275     log check_lib_cpp "$@"
1276     name="$1"
1277     headers="$2"
1278     classes="$3"
1279     shift 3
1280     disable $name
1281     check_class_headers_cpp "$headers" "$classes" "$@" &&
1282         enable $name && eval ${name}_extralibs="\$@"
1283 }
1284
1285 test_pkg_config(){
1286     log test_pkg_config "$@"
1287     name="$1"
1288     pkg_version="$2"
1289     pkg="${2%% *}"
1290     headers="$3"
1291     funcs="$4"
1292     shift 4
1293     disable $name
1294     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1295     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1296     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1297     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1298         enable $name &&
1299         set_sanitized "${name}_cflags"    $pkg_cflags &&
1300         set_sanitized "${name}_extralibs" $pkg_libs
1301 }
1302
1303 check_pkg_config(){
1304     log check_pkg_config "$@"
1305     name="$1"
1306     test_pkg_config "$@" &&
1307         eval add_cflags \$${name}_cflags
1308 }
1309
1310 test_exec(){
1311     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1312 }
1313
1314 check_exec_crash(){
1315     log check_exec_crash "$@"
1316     code=$(cat)
1317
1318     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1319     # are safe but may not be available everywhere.  Thus we use
1320     # raise(SIGTERM) instead.  The check is run in a subshell so we
1321     # can redirect the "Terminated" message from the shell.  SIGBUS
1322     # is not defined by standard C so it is used conditionally.
1323
1324     (test_exec "$@") >> $logfile 2>&1 <<EOF
1325 #include <signal.h>
1326 static void sighandler(int sig){
1327     raise(SIGTERM);
1328 }
1329 int foo(void){
1330     $code
1331 }
1332 int (*func_ptr)(void) = foo;
1333 int main(void){
1334     signal(SIGILL, sighandler);
1335     signal(SIGFPE, sighandler);
1336     signal(SIGSEGV, sighandler);
1337 #ifdef SIGBUS
1338     signal(SIGBUS, sighandler);
1339 #endif
1340     return func_ptr();
1341 }
1342 EOF
1343 }
1344
1345 check_type(){
1346     log check_type "$@"
1347     headers=$1
1348     type=$2
1349     shift 2
1350     disable_sanitized "$type"
1351     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1352 }
1353
1354 check_struct(){
1355     log check_struct "$@"
1356     headers=$1
1357     struct=$2
1358     member=$3
1359     shift 3
1360     disable_sanitized "${struct}_${member}"
1361     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1362         enable_sanitized "${struct}_${member}"
1363 }
1364
1365 check_builtin(){
1366     log check_builtin "$@"
1367     name=$1
1368     headers=$2
1369     builtin=$3
1370     shift 3
1371     disable "$name"
1372     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1373 }
1374
1375 check_compile_assert(){
1376     log check_compile_assert "$@"
1377     name=$1
1378     headers=$2
1379     condition=$3
1380     shift 3
1381     disable "$name"
1382     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1383 }
1384
1385 require(){
1386     log require "$@"
1387     name_version="$1"
1388     name="${1%% *}"
1389     shift
1390     check_lib $name "$@" || die "ERROR: $name_version not found"
1391 }
1392
1393 require_cpp(){
1394     name="$1"
1395     headers="$2"
1396     classes="$3"
1397     shift 3
1398     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1399 }
1400
1401 require_header(){
1402     log require_header "$@"
1403     headers="$1"
1404     check_header "$@" || die "ERROR: $headers not found"
1405 }
1406
1407 require_cpp_condition(){
1408     log require_cpp_condition "$@"
1409     condition="$2"
1410     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1411 }
1412
1413 require_pkg_config(){
1414     log require_pkg_config "$@"
1415     pkg_version="$2"
1416     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1417 }
1418
1419 hostcc_e(){
1420     eval printf '%s\\n' $HOSTCC_E
1421 }
1422
1423 hostcc_o(){
1424     eval printf '%s\\n' $HOSTCC_O
1425 }
1426
1427 test_host_cc(){
1428     log test_host_cc "$@"
1429     cat > $TMPC
1430     log_file $TMPC
1431     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1432 }
1433
1434 test_host_cpp(){
1435     log test_host_cpp "$@"
1436     cat > $TMPC
1437     log_file $TMPC
1438     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1439 }
1440
1441 check_host_cppflags(){
1442     log check_host_cppflags "$@"
1443     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1444 #include <stdlib.h>
1445 EOF
1446 }
1447
1448 check_host_cflags(){
1449     log check_host_cflags "$@"
1450     set -- $($host_cflags_filter "$@")
1451     test_host_cc "$@" <<EOF && append host_cflags "$@"
1452 int x;
1453 EOF
1454 }
1455
1456 test_host_cpp_condition(){
1457     log test_host_cpp_condition "$@"
1458     header=$1
1459     condition=$2
1460     shift 2
1461     test_host_cpp "$@" <<EOF
1462 #include <$header>
1463 #if !($condition)
1464 #error "unsatisfied condition: $condition"
1465 #endif
1466 EOF
1467 }
1468
1469 cp_if_changed(){
1470     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1471     mkdir -p "$(dirname $2)"
1472     cp -f "$1" "$2"
1473 }
1474
1475 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1476 # system-dependent things.
1477
1478 AVCODEC_COMPONENTS="
1479     bsfs
1480     decoders
1481     encoders
1482     hwaccels
1483     parsers
1484 "
1485
1486 AVDEVICE_COMPONENTS="
1487     indevs
1488     outdevs
1489 "
1490
1491 AVFILTER_COMPONENTS="
1492     filters
1493 "
1494
1495 AVFORMAT_COMPONENTS="
1496     demuxers
1497     muxers
1498     protocols
1499 "
1500
1501 COMPONENT_LIST="
1502     $AVCODEC_COMPONENTS
1503     $AVDEVICE_COMPONENTS
1504     $AVFILTER_COMPONENTS
1505     $AVFORMAT_COMPONENTS
1506 "
1507
1508 EXAMPLE_LIST="
1509     avio_dir_cmd_example
1510     avio_reading_example
1511     decode_audio_example
1512     decode_video_example
1513     demuxing_decoding_example
1514     encode_audio_example
1515     encode_video_example
1516     extract_mvs_example
1517     filter_audio_example
1518     filtering_audio_example
1519     filtering_video_example
1520     http_multiclient_example
1521     hw_decode_example
1522     metadata_example
1523     muxing_example
1524     qsvdec_example
1525     remuxing_example
1526     resampling_audio_example
1527     scaling_video_example
1528     transcode_aac_example
1529     transcoding_example
1530     vaapi_encode_example
1531     vaapi_transcode_example
1532 "
1533
1534 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1535     alsa
1536     appkit
1537     avfoundation
1538     bzlib
1539     coreimage
1540     iconv
1541     libxcb
1542     libxcb_shm
1543     libxcb_shape
1544     libxcb_xfixes
1545     lzma
1546     schannel
1547     sdl2
1548     securetransport
1549     sndio
1550     xlib
1551     zlib
1552 "
1553
1554 EXTERNAL_LIBRARY_GPL_LIST="
1555     avisynth
1556     frei0r
1557     libcdio
1558     librubberband
1559     libvidstab
1560     libx264
1561     libx265
1562     libxavs
1563     libxvid
1564 "
1565
1566 EXTERNAL_LIBRARY_NONFREE_LIST="
1567     decklink
1568     libndi_newtek
1569     libfdk_aac
1570     openssl
1571     libtls
1572 "
1573
1574 EXTERNAL_LIBRARY_VERSION3_LIST="
1575     gmp
1576     libopencore_amrnb
1577     libopencore_amrwb
1578     libvmaf
1579     libvo_amrwbenc
1580     rkmpp
1581 "
1582
1583 EXTERNAL_LIBRARY_GPLV3_LIST="
1584     libsmbclient
1585 "
1586
1587 EXTERNAL_LIBRARY_LIST="
1588     $EXTERNAL_LIBRARY_GPL_LIST
1589     $EXTERNAL_LIBRARY_NONFREE_LIST
1590     $EXTERNAL_LIBRARY_VERSION3_LIST
1591     $EXTERNAL_LIBRARY_GPLV3_LIST
1592     chromaprint
1593     gcrypt
1594     gnutls
1595     jni
1596     ladspa
1597     libass
1598     libbluray
1599     libbs2b
1600     libcaca
1601     libcelt
1602     libcodec2
1603     libdc1394
1604     libdrm
1605     libflite
1606     libfontconfig
1607     libfreetype
1608     libfribidi
1609     libgme
1610     libgsm
1611     libiec61883
1612     libilbc
1613     libjack
1614     libkvazaar
1615     libmodplug
1616     libmp3lame
1617     libmysofa
1618     libopencv
1619     libopenh264
1620     libopenjpeg
1621     libopenmpt
1622     libopus
1623     libpulse
1624     librsvg
1625     librtmp
1626     libshine
1627     libsmbclient
1628     libsnappy
1629     libsoxr
1630     libspeex
1631     libssh
1632     libtesseract
1633     libtheora
1634     libtwolame
1635     libv4l2
1636     libvorbis
1637     libvpx
1638     libwavpack
1639     libwebp
1640     libxml2
1641     libzimg
1642     libzmq
1643     libzvbi
1644     lv2
1645     mediacodec
1646     openal
1647     opengl
1648 "
1649
1650 HWACCEL_AUTODETECT_LIBRARY_LIST="
1651     amf
1652     audiotoolbox
1653     crystalhd
1654     cuda
1655     cuvid
1656     d3d11va
1657     dxva2
1658     ffnvcodec
1659     nvdec
1660     nvenc
1661     vaapi
1662     vdpau
1663     videotoolbox
1664     v4l2_m2m
1665     xvmc
1666 "
1667
1668 # catchall list of things that require external libs to link
1669 EXTRALIBS_LIST="
1670     cpu_init
1671     cws2fws
1672 "
1673
1674 HWACCEL_LIBRARY_NONFREE_LIST="
1675     cuda_sdk
1676     libnpp
1677 "
1678
1679 HWACCEL_LIBRARY_LIST="
1680     $HWACCEL_LIBRARY_NONFREE_LIST
1681     libmfx
1682     mmal
1683     omx
1684     opencl
1685 "
1686
1687 DOCUMENT_LIST="
1688     doc
1689     htmlpages
1690     manpages
1691     podpages
1692     txtpages
1693 "
1694
1695 FEATURE_LIST="
1696     ftrapv
1697     gray
1698     hardcoded_tables
1699     omx_rpi
1700     runtime_cpudetect
1701     safe_bitstream_reader
1702     shared
1703     small
1704     static
1705     swscale_alpha
1706 "
1707
1708 LIBRARY_LIST="
1709     avcodec
1710     avdevice
1711     avfilter
1712     avformat
1713     avresample
1714     avutil
1715     postproc
1716     swresample
1717     swscale
1718 "
1719
1720 LICENSE_LIST="
1721     gpl
1722     nonfree
1723     version3
1724 "
1725
1726 PROGRAM_LIST="
1727     ffplay
1728     ffprobe
1729     ffmpeg
1730 "
1731
1732 SUBSYSTEM_LIST="
1733     dct
1734     dwt
1735     error_resilience
1736     faan
1737     fast_unaligned
1738     fft
1739     lsp
1740     lzo
1741     mdct
1742     pixelutils
1743     network
1744     rdft
1745 "
1746
1747 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1748 CONFIG_LIST="
1749     $DOCUMENT_LIST
1750     $EXAMPLE_LIST
1751     $EXTERNAL_LIBRARY_LIST
1752     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1753     $HWACCEL_LIBRARY_LIST
1754     $HWACCEL_AUTODETECT_LIBRARY_LIST
1755     $FEATURE_LIST
1756     $LICENSE_LIST
1757     $LIBRARY_LIST
1758     $PROGRAM_LIST
1759     $SUBSYSTEM_LIST
1760     autodetect
1761     fontconfig
1762     linux_perf
1763     memory_poisoning
1764     neon_clobber_test
1765     ossfuzz
1766     pic
1767     thumb
1768     valgrind_backtrace
1769     xmm_clobber_test
1770     $COMPONENT_LIST
1771 "
1772
1773 THREADS_LIST="
1774     pthreads
1775     os2threads
1776     w32threads
1777 "
1778
1779 ATOMICS_LIST="
1780     atomics_gcc
1781     atomics_suncc
1782     atomics_win32
1783 "
1784
1785 AUTODETECT_LIBS="
1786     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1787     $HWACCEL_AUTODETECT_LIBRARY_LIST
1788     $THREADS_LIST
1789 "
1790
1791 ARCH_LIST="
1792     aarch64
1793     alpha
1794     arm
1795     avr32
1796     avr32_ap
1797     avr32_uc
1798     bfin
1799     ia64
1800     m68k
1801     mips
1802     mips64
1803     parisc
1804     ppc
1805     ppc64
1806     s390
1807     sh4
1808     sparc
1809     sparc64
1810     tilegx
1811     tilepro
1812     tomi
1813     x86
1814     x86_32
1815     x86_64
1816 "
1817
1818 ARCH_EXT_LIST_ARM="
1819     armv5te
1820     armv6
1821     armv6t2
1822     armv8
1823     neon
1824     vfp
1825     vfpv3
1826     setend
1827 "
1828
1829 ARCH_EXT_LIST_MIPS="
1830     mipsfpu
1831     mips32r2
1832     mips32r5
1833     mips64r2
1834     mips32r6
1835     mips64r6
1836     mipsdsp
1837     mipsdspr2
1838     msa
1839 "
1840
1841 ARCH_EXT_LIST_LOONGSON="
1842     loongson2
1843     loongson3
1844     mmi
1845 "
1846
1847 ARCH_EXT_LIST_X86_SIMD="
1848     aesni
1849     amd3dnow
1850     amd3dnowext
1851     avx
1852     avx2
1853     avx512
1854     fma3
1855     fma4
1856     mmx
1857     mmxext
1858     sse
1859     sse2
1860     sse3
1861     sse4
1862     sse42
1863     ssse3
1864     xop
1865 "
1866
1867 ARCH_EXT_LIST_PPC="
1868     altivec
1869     dcbzl
1870     ldbrx
1871     power8
1872     ppc4xx
1873     vsx
1874 "
1875
1876 ARCH_EXT_LIST_X86="
1877     $ARCH_EXT_LIST_X86_SIMD
1878     cpunop
1879     i686
1880 "
1881
1882 ARCH_EXT_LIST="
1883     $ARCH_EXT_LIST_ARM
1884     $ARCH_EXT_LIST_PPC
1885     $ARCH_EXT_LIST_X86
1886     $ARCH_EXT_LIST_MIPS
1887     $ARCH_EXT_LIST_LOONGSON
1888 "
1889
1890 ARCH_FEATURES="
1891     aligned_stack
1892     fast_64bit
1893     fast_clz
1894     fast_cmov
1895     local_aligned
1896     simd_align_16
1897     simd_align_32
1898     simd_align_64
1899 "
1900
1901 BUILTIN_LIST="
1902     atomic_cas_ptr
1903     machine_rw_barrier
1904     MemoryBarrier
1905     mm_empty
1906     rdtsc
1907     sem_timedwait
1908     sync_val_compare_and_swap
1909 "
1910 HAVE_LIST_CMDLINE="
1911     inline_asm
1912     symver
1913     x86asm
1914 "
1915
1916 HAVE_LIST_PUB="
1917     bigendian
1918     fast_unaligned
1919 "
1920
1921 HEADERS_LIST="
1922     arpa_inet_h
1923     asm_types_h
1924     cdio_paranoia_h
1925     cdio_paranoia_paranoia_h
1926     cuda_h
1927     dispatch_dispatch_h
1928     dev_bktr_ioctl_bt848_h
1929     dev_bktr_ioctl_meteor_h
1930     dev_ic_bt8xx_h
1931     dev_video_bktr_ioctl_bt848_h
1932     dev_video_meteor_ioctl_meteor_h
1933     direct_h
1934     dirent_h
1935     dxgidebug_h
1936     dxva_h
1937     ES2_gl_h
1938     gsm_h
1939     io_h
1940     machine_ioctl_bt848_h
1941     machine_ioctl_meteor_h
1942     malloc_h
1943     opencv2_core_core_c_h
1944     OpenGL_gl3_h
1945     poll_h
1946     sys_param_h
1947     sys_resource_h
1948     sys_select_h
1949     sys_soundcard_h
1950     sys_time_h
1951     sys_un_h
1952     sys_videoio_h
1953     termios_h
1954     udplite_h
1955     unistd_h
1956     valgrind_valgrind_h
1957     windows_h
1958     winsock2_h
1959 "
1960
1961 INTRINSICS_LIST="
1962     intrinsics_neon
1963 "
1964
1965 COMPLEX_FUNCS="
1966     cabs
1967     cexp
1968 "
1969
1970 MATH_FUNCS="
1971     atanf
1972     atan2f
1973     cbrt
1974     cbrtf
1975     copysign
1976     cosf
1977     erf
1978     exp2
1979     exp2f
1980     expf
1981     hypot
1982     isfinite
1983     isinf
1984     isnan
1985     ldexpf
1986     llrint
1987     llrintf
1988     log2
1989     log2f
1990     log10f
1991     lrint
1992     lrintf
1993     powf
1994     rint
1995     round
1996     roundf
1997     sinf
1998     trunc
1999     truncf
2000 "
2001
2002 SYSTEM_FEATURES="
2003     dos_paths
2004     libc_msvcrt
2005     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2006     section_data_rel_ro
2007     threads
2008     uwp
2009     winrt
2010 "
2011
2012 SYSTEM_FUNCS="
2013     access
2014     aligned_malloc
2015     arc4random
2016     clock_gettime
2017     closesocket
2018     CommandLineToArgvW
2019     fcntl
2020     getaddrinfo
2021     gethrtime
2022     getopt
2023     GetProcessAffinityMask
2024     GetProcessMemoryInfo
2025     GetProcessTimes
2026     getrusage
2027     GetSystemTimeAsFileTime
2028     gettimeofday
2029     glob
2030     glXGetProcAddress
2031     gmtime_r
2032     inet_aton
2033     isatty
2034     kbhit
2035     localtime_r
2036     lstat
2037     lzo1x_999_compress
2038     mach_absolute_time
2039     MapViewOfFile
2040     memalign
2041     mkstemp
2042     mmap
2043     mprotect
2044     nanosleep
2045     PeekNamedPipe
2046     posix_memalign
2047     pthread_cancel
2048     sched_getaffinity
2049     SecItemImport
2050     SetConsoleTextAttribute
2051     SetConsoleCtrlHandler
2052     setmode
2053     setrlimit
2054     Sleep
2055     strerror_r
2056     sysconf
2057     sysctl
2058     usleep
2059     UTGetOSTypeFromString
2060     VirtualAlloc
2061     wglGetProcAddress
2062 "
2063
2064 SYSTEM_LIBRARIES="
2065     vaapi_drm
2066     vaapi_x11
2067     vdpau_x11
2068     wincrypt
2069 "
2070
2071 TOOLCHAIN_FEATURES="
2072     as_arch_directive
2073     as_fpu_directive
2074     as_func
2075     as_object_arch
2076     asm_mod_q
2077     blocks_extension
2078     ebp_available
2079     ebx_available
2080     gnu_as
2081     gnu_windres
2082     ibm_asm
2083     inline_asm_direct_symbol_refs
2084     inline_asm_labels
2085     inline_asm_nonlocal_labels
2086     pragma_deprecated
2087     rsync_contimeout
2088     symver_asm_label
2089     symver_gnu_asm
2090     vfp_args
2091     xform_asm
2092     xmm_clobbers
2093 "
2094
2095 TYPES_LIST="
2096     kCMVideoCodecType_HEVC
2097     socklen_t
2098     struct_addrinfo
2099     struct_group_source_req
2100     struct_ip_mreq_source
2101     struct_ipv6_mreq
2102     struct_msghdr_msg_flags
2103     struct_pollfd
2104     struct_rusage_ru_maxrss
2105     struct_sctp_event_subscribe
2106     struct_sockaddr_in6
2107     struct_sockaddr_sa_len
2108     struct_sockaddr_storage
2109     struct_stat_st_mtim_tv_nsec
2110     struct_v4l2_frmivalenum_discrete
2111 "
2112
2113 HAVE_LIST="
2114     $ARCH_EXT_LIST
2115     $(add_suffix _external $ARCH_EXT_LIST)
2116     $(add_suffix _inline   $ARCH_EXT_LIST)
2117     $ARCH_FEATURES
2118     $BUILTIN_LIST
2119     $COMPLEX_FUNCS
2120     $HAVE_LIST_CMDLINE
2121     $HAVE_LIST_PUB
2122     $HEADERS_LIST
2123     $INTRINSICS_LIST
2124     $MATH_FUNCS
2125     $SYSTEM_FEATURES
2126     $SYSTEM_FUNCS
2127     $SYSTEM_LIBRARIES
2128     $THREADS_LIST
2129     $TOOLCHAIN_FEATURES
2130     $TYPES_LIST
2131     makeinfo
2132     makeinfo_html
2133     opencl_d3d11
2134     opencl_drm_arm
2135     opencl_dxva2
2136     opencl_vaapi_beignet
2137     opencl_vaapi_intel_media
2138     perl
2139     pod2man
2140     texi2html
2141 "
2142
2143 # options emitted with CONFIG_ prefix but not available on the command line
2144 CONFIG_EXTRA="
2145     aandcttables
2146     ac3dsp
2147     adts_header
2148     audio_frame_queue
2149     audiodsp
2150     blockdsp
2151     bswapdsp
2152     cabac
2153     cbs
2154     cbs_h264
2155     cbs_h265
2156     cbs_mpeg2
2157     dirac_parse
2158     dvprofile
2159     exif
2160     faandct
2161     faanidct
2162     fdctdsp
2163     flacdsp
2164     fmtconvert
2165     frame_thread_encoder
2166     g722dsp
2167     golomb
2168     gplv3
2169     h263dsp
2170     h264chroma
2171     h264dsp
2172     h264parse
2173     h264pred
2174     h264qpel
2175     hevcparse
2176     hpeldsp
2177     huffman
2178     huffyuvdsp
2179     huffyuvencdsp
2180     idctdsp
2181     iirfilter
2182     mdct15
2183     intrax8
2184     iso_media
2185     ividsp
2186     jpegtables
2187     lgplv3
2188     libx262
2189     llauddsp
2190     llviddsp
2191     llvidencdsp
2192     lpc
2193     lzf
2194     me_cmp
2195     mpeg_er
2196     mpegaudio
2197     mpegaudiodsp
2198     mpegaudioheader
2199     mpegvideo
2200     mpegvideoenc
2201     mss34dsp
2202     pixblockdsp
2203     qpeldsp
2204     qsv
2205     qsvdec
2206     qsvenc
2207     qsvvpp
2208     rangecoder
2209     riffdec
2210     riffenc
2211     rtpdec
2212     rtpenc_chain
2213     rv34dsp
2214     sinewin
2215     snappy
2216     srtp
2217     startcode
2218     texturedsp
2219     texturedspenc
2220     tpeldsp
2221     vaapi_1
2222     vaapi_encode
2223     vc1dsp
2224     videodsp
2225     vp3dsp
2226     vp56dsp
2227     vp8dsp
2228     wma_freqs
2229     wmv2dsp
2230 "
2231
2232 CMDLINE_SELECT="
2233     $ARCH_EXT_LIST
2234     $CONFIG_LIST
2235     $HAVE_LIST_CMDLINE
2236     $THREADS_LIST
2237     asm
2238     cross_compile
2239     debug
2240     extra_warnings
2241     logging
2242     lto
2243     optimizations
2244     rpath
2245     stripping
2246 "
2247
2248 PATHS_LIST="
2249     bindir
2250     datadir
2251     docdir
2252     incdir
2253     libdir
2254     mandir
2255     pkgconfigdir
2256     prefix
2257     shlibdir
2258     install_name_dir
2259 "
2260
2261 CMDLINE_SET="
2262     $PATHS_LIST
2263     ar
2264     arch
2265     as
2266     assert_level
2267     build_suffix
2268     cc
2269     objcc
2270     cpu
2271     cross_prefix
2272     custom_allocator
2273     cxx
2274     dep_cc
2275     doxygen
2276     env
2277     extra_version
2278     gas
2279     host_cc
2280     host_cflags
2281     host_extralibs
2282     host_ld
2283     host_ldflags
2284     host_os
2285     ignore_tests
2286     install
2287     ld
2288     ln_s
2289     logfile
2290     malloc_prefix
2291     nm
2292     optflags
2293     nvccflags
2294     pkg_config
2295     pkg_config_flags
2296     progs_suffix
2297     random_seed
2298     ranlib
2299     samples
2300     strip
2301     sws_max_filter_size
2302     sysinclude
2303     sysroot
2304     target_exec
2305     target_os
2306     target_path
2307     target_samples
2308     tempprefix
2309     toolchain
2310     valgrind
2311     x86asmexe
2312 "
2313
2314 CMDLINE_APPEND="
2315     extra_cflags
2316     extra_cxxflags
2317     extra_objcflags
2318     host_cppflags
2319 "
2320
2321 # code dependency declarations
2322
2323 # architecture extensions
2324
2325 armv5te_deps="arm"
2326 armv6_deps="arm"
2327 armv6t2_deps="arm"
2328 armv8_deps="aarch64"
2329 neon_deps_any="aarch64 arm"
2330 intrinsics_neon_deps="neon"
2331 vfp_deps_any="aarch64 arm"
2332 vfpv3_deps="vfp"
2333 setend_deps="arm"
2334
2335 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2336
2337 altivec_deps="ppc"
2338 dcbzl_deps="ppc"
2339 ldbrx_deps="ppc"
2340 ppc4xx_deps="ppc"
2341 vsx_deps="altivec"
2342 power8_deps="vsx"
2343
2344 loongson2_deps="mips"
2345 loongson3_deps="mips"
2346 mips32r2_deps="mips"
2347 mips32r5_deps="mips"
2348 mips32r6_deps="mips"
2349 mips64r2_deps="mips"
2350 mips64r6_deps="mips"
2351 mipsfpu_deps="mips"
2352 mipsdsp_deps="mips"
2353 mipsdspr2_deps="mips"
2354 mmi_deps="mips"
2355 msa_deps="mipsfpu"
2356
2357 cpunop_deps="i686"
2358 x86_64_select="i686"
2359 x86_64_suggest="fast_cmov"
2360
2361 amd3dnow_deps="mmx"
2362 amd3dnowext_deps="amd3dnow"
2363 i686_deps="x86"
2364 mmx_deps="x86"
2365 mmxext_deps="mmx"
2366 sse_deps="mmxext"
2367 sse2_deps="sse"
2368 sse3_deps="sse2"
2369 ssse3_deps="sse3"
2370 sse4_deps="ssse3"
2371 sse42_deps="sse4"
2372 aesni_deps="sse42"
2373 avx_deps="sse42"
2374 xop_deps="avx"
2375 fma3_deps="avx"
2376 fma4_deps="avx"
2377 avx2_deps="avx"
2378 avx512_deps="avx2"
2379
2380 mmx_external_deps="x86asm"
2381 mmx_inline_deps="inline_asm x86"
2382 mmx_suggest="mmx_external mmx_inline"
2383
2384 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2385     eval dep=\$${ext}_deps
2386     eval ${ext}_external_deps='"${dep}_external"'
2387     eval ${ext}_inline_deps='"${dep}_inline"'
2388     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2389 done
2390
2391 aligned_stack_if_any="aarch64 ppc x86"
2392 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2393 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2394 fast_unaligned_if_any="aarch64 ppc x86"
2395 simd_align_16_if_any="altivec neon sse"
2396 simd_align_32_if_any="avx"
2397 simd_align_64_if_any="avx512"
2398
2399 # system capabilities
2400 symver_if_any="symver_asm_label symver_gnu_asm"
2401 valgrind_backtrace_conflict="optimizations"
2402 valgrind_backtrace_deps="valgrind_valgrind_h"
2403
2404 # threading support
2405 atomics_gcc_if="sync_val_compare_and_swap"
2406 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2407 atomics_win32_if="MemoryBarrier"
2408 atomics_native_if_any="$ATOMICS_LIST"
2409 w32threads_deps="atomics_native"
2410 threads_if_any="$THREADS_LIST"
2411
2412 # subsystems
2413 cbs_h264_select="cbs golomb"
2414 cbs_h265_select="cbs golomb"
2415 cbs_mpeg2_select="cbs"
2416 dct_select="rdft"
2417 dirac_parse_select="golomb"
2418 error_resilience_select="me_cmp"
2419 faandct_deps="faan"
2420 faandct_select="fdctdsp"
2421 faanidct_deps="faan"
2422 faanidct_select="idctdsp"
2423 h264dsp_select="startcode"
2424 hevcparse_select="golomb"
2425 frame_thread_encoder_deps="encoders threads"
2426 intrax8_select="blockdsp idctdsp"
2427 mdct_select="fft"
2428 mdct15_select="fft"
2429 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2430 mpeg_er_select="error_resilience"
2431 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2432 mpegaudiodsp_select="dct"
2433 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2434 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2435 vc1dsp_select="h264chroma qpeldsp startcode"
2436 rdft_select="fft"
2437
2438 # decoders / encoders
2439 aac_decoder_select="adts_header mdct15 mdct sinewin"
2440 aac_fixed_decoder_select="mdct sinewin"
2441 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2442 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2443 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2444 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2445 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2446 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2447 adpcm_g722_decoder_select="g722dsp"
2448 adpcm_g722_encoder_select="g722dsp"
2449 aic_decoder_select="golomb idctdsp"
2450 alac_encoder_select="lpc"
2451 als_decoder_select="bswapdsp"
2452 amrnb_decoder_select="lsp"
2453 amrwb_decoder_select="lsp"
2454 amv_decoder_select="sp5x_decoder exif"
2455 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2456 ape_decoder_select="bswapdsp llauddsp"
2457 apng_decoder_deps="zlib"
2458 apng_encoder_deps="zlib"
2459 apng_encoder_select="llvidencdsp"
2460 aptx_decoder_select="audio_frame_queue"
2461 aptx_encoder_select="audio_frame_queue"
2462 aptx_hd_decoder_select="audio_frame_queue"
2463 aptx_hd_encoder_select="audio_frame_queue"
2464 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2465 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2466 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2467 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2468 atrac1_decoder_select="mdct sinewin"
2469 atrac3_decoder_select="mdct"
2470 atrac3p_decoder_select="mdct sinewin"
2471 avrn_decoder_select="exif jpegtables"
2472 bink_decoder_select="blockdsp hpeldsp"
2473 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2474 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2475 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2476 clearvideo_decoder_select="idctdsp"
2477 cllc_decoder_select="bswapdsp"
2478 comfortnoise_encoder_select="lpc"
2479 cook_decoder_select="audiodsp mdct sinewin"
2480 cscd_decoder_select="lzo"
2481 cscd_decoder_suggest="zlib"
2482 dca_decoder_select="mdct"
2483 dds_decoder_select="texturedsp"
2484 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2485 dnxhd_decoder_select="blockdsp idctdsp"
2486 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2487 dolby_e_decoder_select="mdct"
2488 dvvideo_decoder_select="dvprofile idctdsp"
2489 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2490 dxa_decoder_deps="zlib"
2491 dxv_decoder_select="lzf texturedsp"
2492 eac3_decoder_select="ac3_decoder"
2493 eac3_encoder_select="ac3_encoder"
2494 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2495 eatgq_decoder_select="aandcttables"
2496 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2497 exr_decoder_deps="zlib"
2498 ffv1_decoder_select="rangecoder"
2499 ffv1_encoder_select="rangecoder"
2500 ffvhuff_decoder_select="huffyuv_decoder"
2501 ffvhuff_encoder_select="huffyuv_encoder"
2502 fic_decoder_select="golomb"
2503 flac_decoder_select="flacdsp"
2504 flac_encoder_select="bswapdsp flacdsp lpc"
2505 flashsv2_decoder_deps="zlib"
2506 flashsv2_encoder_deps="zlib"
2507 flashsv_decoder_deps="zlib"
2508 flashsv_encoder_deps="zlib"
2509 flv_decoder_select="h263_decoder"
2510 flv_encoder_select="h263_encoder"
2511 fourxm_decoder_select="blockdsp bswapdsp"
2512 fraps_decoder_select="bswapdsp huffman"
2513 g2m_decoder_deps="zlib"
2514 g2m_decoder_select="blockdsp idctdsp jpegtables"
2515 g729_decoder_select="audiodsp"
2516 h261_decoder_select="mpegvideo"
2517 h261_encoder_select="aandcttables mpegvideoenc"
2518 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2519 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2520 h263i_decoder_select="h263_decoder"
2521 h263p_decoder_select="h263_decoder"
2522 h263p_encoder_select="h263_encoder"
2523 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2524 h264_decoder_suggest="error_resilience"
2525 hap_decoder_select="snappy texturedsp"
2526 hap_encoder_deps="libsnappy"
2527 hap_encoder_select="texturedspenc"
2528 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2529 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2530 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2531 iac_decoder_select="imc_decoder"
2532 imc_decoder_select="bswapdsp fft mdct sinewin"
2533 indeo3_decoder_select="hpeldsp"
2534 indeo4_decoder_select="ividsp"
2535 indeo5_decoder_select="ividsp"
2536 interplay_video_decoder_select="hpeldsp"
2537 jpegls_decoder_select="mjpeg_decoder"
2538 jv_decoder_select="blockdsp"
2539 lagarith_decoder_select="llviddsp"
2540 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2541 magicyuv_decoder_select="llviddsp"
2542 magicyuv_encoder_select="llvidencdsp"
2543 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2544 metasound_decoder_select="lsp mdct sinewin"
2545 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2546 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2547 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2548 mjpegb_decoder_select="mjpeg_decoder"
2549 mlp_decoder_select="mlp_parser"
2550 mlp_encoder_select="lpc"
2551 motionpixels_decoder_select="bswapdsp"
2552 mp1_decoder_select="mpegaudio"
2553 mp1float_decoder_select="mpegaudio"
2554 mp2_decoder_select="mpegaudio"
2555 mp2float_decoder_select="mpegaudio"
2556 mp3_decoder_select="mpegaudio"
2557 mp3adu_decoder_select="mpegaudio"
2558 mp3adufloat_decoder_select="mpegaudio"
2559 mp3float_decoder_select="mpegaudio"
2560 mp3on4_decoder_select="mpegaudio"
2561 mp3on4float_decoder_select="mpegaudio"
2562 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2563 mpc8_decoder_select="mpegaudiodsp"
2564 mpegvideo_decoder_select="mpegvideo"
2565 mpeg1video_decoder_select="mpegvideo"
2566 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2567 mpeg2video_decoder_select="mpegvideo"
2568 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2569 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2570 mpeg4_encoder_select="h263_encoder"
2571 msa1_decoder_select="mss34dsp"
2572 mscc_decoder_deps="zlib"
2573 msmpeg4v1_decoder_select="h263_decoder"
2574 msmpeg4v2_decoder_select="h263_decoder"
2575 msmpeg4v2_encoder_select="h263_encoder"
2576 msmpeg4v3_decoder_select="h263_decoder"
2577 msmpeg4v3_encoder_select="h263_encoder"
2578 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2579 mts2_decoder_select="mss34dsp"
2580 mxpeg_decoder_select="mjpeg_decoder"
2581 nellymoser_decoder_select="mdct sinewin"
2582 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2583 nuv_decoder_select="idctdsp lzo"
2584 on2avc_decoder_select="mdct"
2585 opus_decoder_deps="swresample"
2586 opus_decoder_select="mdct15"
2587 opus_encoder_select="audio_frame_queue mdct15"
2588 png_decoder_deps="zlib"
2589 png_encoder_deps="zlib"
2590 png_encoder_select="llvidencdsp"
2591 prores_decoder_select="blockdsp idctdsp"
2592 prores_encoder_select="fdctdsp"
2593 qcelp_decoder_select="lsp"
2594 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2595 ra_144_decoder_select="audiodsp"
2596 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2597 ralf_decoder_select="golomb"
2598 rawvideo_decoder_select="bswapdsp"
2599 rscc_decoder_deps="zlib"
2600 rtjpeg_decoder_select="me_cmp"
2601 rv10_decoder_select="h263_decoder"
2602 rv10_encoder_select="h263_encoder"
2603 rv20_decoder_select="h263_decoder"
2604 rv20_encoder_select="h263_encoder"
2605 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2606 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2607 screenpresso_decoder_deps="zlib"
2608 shorten_decoder_select="bswapdsp"
2609 sipr_decoder_select="lsp"
2610 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2611 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2612 sonic_decoder_select="golomb rangecoder"
2613 sonic_encoder_select="golomb rangecoder"
2614 sonic_ls_encoder_select="golomb rangecoder"
2615 sp5x_decoder_select="mjpeg_decoder"
2616 srgc_decoder_deps="zlib"
2617 svq1_decoder_select="hpeldsp"
2618 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2619 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2620 svq3_decoder_suggest="zlib"
2621 tak_decoder_select="audiodsp"
2622 tdsc_decoder_deps="zlib"
2623 tdsc_decoder_select="mjpeg_decoder"
2624 theora_decoder_select="vp3_decoder"
2625 thp_decoder_select="mjpeg_decoder"
2626 tiff_decoder_suggest="zlib lzma"
2627 tiff_encoder_suggest="zlib"
2628 truehd_decoder_select="mlp_parser"
2629 truehd_encoder_select="lpc"
2630 truemotion2_decoder_select="bswapdsp"
2631 truespeech_decoder_select="bswapdsp"
2632 tscc_decoder_deps="zlib"
2633 twinvq_decoder_select="mdct lsp sinewin"
2634 txd_decoder_select="texturedsp"
2635 utvideo_decoder_select="bswapdsp llviddsp"
2636 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2637 vble_decoder_select="llviddsp"
2638 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2639 vc1image_decoder_select="vc1_decoder"
2640 vorbis_decoder_select="mdct"
2641 vorbis_encoder_select="audio_frame_queue mdct"
2642 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2643 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2644 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2645 vp6a_decoder_select="vp6_decoder"
2646 vp6f_decoder_select="vp6_decoder"
2647 vp7_decoder_select="h264pred videodsp vp8dsp"
2648 vp8_decoder_select="h264pred videodsp vp8dsp"
2649 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2650 webp_decoder_select="vp8_decoder exif"
2651 wmalossless_decoder_select="llauddsp"
2652 wmapro_decoder_select="mdct sinewin wma_freqs"
2653 wmav1_decoder_select="mdct sinewin wma_freqs"
2654 wmav1_encoder_select="mdct sinewin wma_freqs"
2655 wmav2_decoder_select="mdct sinewin wma_freqs"
2656 wmav2_encoder_select="mdct sinewin wma_freqs"
2657 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2658 wmv1_decoder_select="h263_decoder"
2659 wmv1_encoder_select="h263_encoder"
2660 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2661 wmv2_encoder_select="h263_encoder wmv2dsp"
2662 wmv3_decoder_select="vc1_decoder"
2663 wmv3image_decoder_select="wmv3_decoder"
2664 xma1_decoder_select="wmapro_decoder"
2665 xma2_decoder_select="wmapro_decoder"
2666 zerocodec_decoder_deps="zlib"
2667 zlib_decoder_deps="zlib"
2668 zlib_encoder_deps="zlib"
2669 zmbv_decoder_deps="zlib"
2670 zmbv_encoder_deps="zlib"
2671
2672 # hardware accelerators
2673 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2674 cuda_deps="ffnvcodec"
2675 cuvid_deps="ffnvcodec"
2676 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2677 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2678 ffnvcodec_deps_any="libdl LoadLibrary"
2679 nvdec_deps="ffnvcodec"
2680 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2681 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2682 xvmc_deps="X11_extensions_XvMClib_h"
2683
2684 h263_vaapi_hwaccel_deps="vaapi"
2685 h263_vaapi_hwaccel_select="h263_decoder"
2686 h263_videotoolbox_hwaccel_deps="videotoolbox"
2687 h263_videotoolbox_hwaccel_select="h263_decoder"
2688 h264_d3d11va_hwaccel_deps="d3d11va"
2689 h264_d3d11va_hwaccel_select="h264_decoder"
2690 h264_d3d11va2_hwaccel_deps="d3d11va"
2691 h264_d3d11va2_hwaccel_select="h264_decoder"
2692 h264_dxva2_hwaccel_deps="dxva2"
2693 h264_dxva2_hwaccel_select="h264_decoder"
2694 h264_nvdec_hwaccel_deps="nvdec"
2695 h264_nvdec_hwaccel_select="h264_decoder"
2696 h264_vaapi_hwaccel_deps="vaapi"
2697 h264_vaapi_hwaccel_select="h264_decoder"
2698 h264_vdpau_hwaccel_deps="vdpau"
2699 h264_vdpau_hwaccel_select="h264_decoder"
2700 h264_videotoolbox_hwaccel_deps="videotoolbox"
2701 h264_videotoolbox_hwaccel_select="h264_decoder"
2702 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2703 hevc_d3d11va_hwaccel_select="hevc_decoder"
2704 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2705 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2706 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2707 hevc_dxva2_hwaccel_select="hevc_decoder"
2708 hevc_nvdec_hwaccel_deps="nvdec"
2709 hevc_nvdec_hwaccel_select="hevc_decoder"
2710 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2711 hevc_vaapi_hwaccel_select="hevc_decoder"
2712 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2713 hevc_vdpau_hwaccel_select="hevc_decoder"
2714 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2715 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2716 mjpeg_nvdec_hwaccel_deps="nvdec"
2717 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2718 mjpeg_vaapi_hwaccel_deps="vaapi"
2719 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2720 mpeg_xvmc_hwaccel_deps="xvmc"
2721 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2722 mpeg1_nvdec_hwaccel_deps="nvdec"
2723 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2724 mpeg1_vdpau_hwaccel_deps="vdpau"
2725 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2726 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2727 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2728 mpeg1_xvmc_hwaccel_deps="xvmc"
2729 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2730 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2731 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2732 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2733 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2734 mpeg2_dxva2_hwaccel_deps="dxva2"
2735 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2736 mpeg2_nvdec_hwaccel_deps="nvdec"
2737 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2738 mpeg2_vaapi_hwaccel_deps="vaapi"
2739 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2740 mpeg2_vdpau_hwaccel_deps="vdpau"
2741 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2742 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2743 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2744 mpeg2_xvmc_hwaccel_deps="xvmc"
2745 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2746 mpeg4_nvdec_hwaccel_deps="nvdec"
2747 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2748 mpeg4_vaapi_hwaccel_deps="vaapi"
2749 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2750 mpeg4_vdpau_hwaccel_deps="vdpau"
2751 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2752 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2753 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2754 vc1_d3d11va_hwaccel_deps="d3d11va"
2755 vc1_d3d11va_hwaccel_select="vc1_decoder"
2756 vc1_d3d11va2_hwaccel_deps="d3d11va"
2757 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2758 vc1_dxva2_hwaccel_deps="dxva2"
2759 vc1_dxva2_hwaccel_select="vc1_decoder"
2760 vc1_nvdec_hwaccel_deps="nvdec"
2761 vc1_nvdec_hwaccel_select="vc1_decoder"
2762 vc1_vaapi_hwaccel_deps="vaapi"
2763 vc1_vaapi_hwaccel_select="vc1_decoder"
2764 vc1_vdpau_hwaccel_deps="vdpau"
2765 vc1_vdpau_hwaccel_select="vc1_decoder"
2766 vp8_nvdec_hwaccel_deps="nvdec"
2767 vp8_nvdec_hwaccel_select="vp8_decoder"
2768 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2769 vp8_vaapi_hwaccel_select="vp8_decoder"
2770 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2771 vp9_d3d11va_hwaccel_select="vp9_decoder"
2772 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2773 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2774 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2775 vp9_dxva2_hwaccel_select="vp9_decoder"
2776 vp9_nvdec_hwaccel_deps="nvdec"
2777 vp9_nvdec_hwaccel_select="vp9_decoder"
2778 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2779 vp9_vaapi_hwaccel_select="vp9_decoder"
2780 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2781 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2782 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2783 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2784 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2785 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2786
2787 # hardware-accelerated codecs
2788 omx_deps="libdl pthreads"
2789 omx_rpi_select="omx"
2790 qsv_deps="libmfx"
2791 qsvdec_select="qsv"
2792 qsvenc_select="qsv"
2793 qsvvpp_select="qsv"
2794 vaapi_encode_deps="vaapi"
2795 v4l2_m2m_deps_any="linux_videodev2_h"
2796
2797 hwupload_cuda_filter_deps="ffnvcodec"
2798 scale_npp_filter_deps="ffnvcodec libnpp"
2799 scale_cuda_filter_deps="cuda_sdk"
2800 thumbnail_cuda_filter_deps="cuda_sdk"
2801
2802 amf_deps_any="libdl LoadLibrary"
2803 nvenc_deps="ffnvcodec"
2804 nvenc_deps_any="libdl LoadLibrary"
2805 nvenc_encoder_deps="nvenc"
2806
2807 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2808 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2809 h264_amf_encoder_deps="amf"
2810 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2811 h264_cuvid_decoder_deps="cuvid"
2812 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2813 h264_mediacodec_decoder_deps="mediacodec"
2814 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2815 h264_mmal_decoder_deps="mmal"
2816 h264_nvenc_encoder_deps="nvenc"
2817 h264_omx_encoder_deps="omx"
2818 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2819 h264_qsv_encoder_select="qsvenc"
2820 h264_rkmpp_decoder_deps="rkmpp"
2821 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2822 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2823 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2824 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2825 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2826 hevc_amf_encoder_deps="amf"
2827 hevc_cuvid_decoder_deps="cuvid"
2828 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2829 hevc_mediacodec_decoder_deps="mediacodec"
2830 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2831 hevc_nvenc_encoder_deps="nvenc"
2832 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2833 hevc_qsv_encoder_select="hevcparse qsvenc"
2834 hevc_rkmpp_decoder_deps="rkmpp"
2835 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2836 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2837 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2838 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2839 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2840 mjpeg_cuvid_decoder_deps="cuvid"
2841 mjpeg_qsv_encoder_deps="libmfx"
2842 mjpeg_qsv_encoder_select="qsvenc"
2843 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2844 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2845 mpeg1_cuvid_decoder_deps="cuvid"
2846 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2847 mpeg2_crystalhd_decoder_select="crystalhd"
2848 mpeg2_cuvid_decoder_deps="cuvid"
2849 mpeg2_mmal_decoder_deps="mmal"
2850 mpeg2_mediacodec_decoder_deps="mediacodec"
2851 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2852 mpeg2_qsv_encoder_select="qsvenc"
2853 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2854 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2855 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2856 mpeg4_crystalhd_decoder_select="crystalhd"
2857 mpeg4_cuvid_decoder_deps="cuvid"
2858 mpeg4_mediacodec_decoder_deps="mediacodec"
2859 mpeg4_mmal_decoder_deps="mmal"
2860 mpeg4_omx_encoder_deps="omx"
2861 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2862 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2863 msmpeg4_crystalhd_decoder_select="crystalhd"
2864 nvenc_h264_encoder_select="h264_nvenc_encoder"
2865 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2866 vc1_crystalhd_decoder_select="crystalhd"
2867 vc1_cuvid_decoder_deps="cuvid"
2868 vc1_mmal_decoder_deps="mmal"
2869 vc1_qsv_decoder_select="qsvdec vc1_parser"
2870 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2871 vp8_cuvid_decoder_deps="cuvid"
2872 vp8_mediacodec_decoder_deps="mediacodec"
2873 vp8_qsv_decoder_select="qsvdec vp8_parser"
2874 vp8_rkmpp_decoder_deps="rkmpp"
2875 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2876 vp8_vaapi_encoder_select="vaapi_encode"
2877 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2878 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2879 vp9_cuvid_decoder_deps="cuvid"
2880 vp9_mediacodec_decoder_deps="mediacodec"
2881 vp9_rkmpp_decoder_deps="rkmpp"
2882 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2883 vp9_vaapi_encoder_select="vaapi_encode"
2884 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2885 wmv3_crystalhd_decoder_select="crystalhd"
2886
2887 # parsers
2888 aac_parser_select="adts_header"
2889 h264_parser_select="golomb h264dsp h264parse"
2890 hevc_parser_select="hevcparse"
2891 mpegaudio_parser_select="mpegaudioheader"
2892 mpegvideo_parser_select="mpegvideo"
2893 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2894 vc1_parser_select="vc1dsp"
2895
2896 # bitstream_filters
2897 aac_adtstoasc_bsf_select="adts_header"
2898 h264_metadata_bsf_select="cbs_h264"
2899 h264_redundant_pps_bsf_select="cbs_h264"
2900 hevc_metadata_bsf_select="cbs_h265"
2901 mjpeg2jpeg_bsf_select="jpegtables"
2902 mpeg2_metadata_bsf_select="cbs_mpeg2"
2903 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2904
2905 # external libraries
2906 aac_at_decoder_deps="audiotoolbox"
2907 aac_at_decoder_select="aac_adtstoasc_bsf"
2908 ac3_at_decoder_deps="audiotoolbox"
2909 ac3_at_decoder_select="ac3_parser"
2910 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2911 alac_at_decoder_deps="audiotoolbox"
2912 amr_nb_at_decoder_deps="audiotoolbox"
2913 avisynth_deps_any="libdl LoadLibrary"
2914 avisynth_demuxer_deps="avisynth"
2915 avisynth_demuxer_select="riffdec"
2916 eac3_at_decoder_deps="audiotoolbox"
2917 eac3_at_decoder_select="ac3_parser"
2918 gsm_ms_at_decoder_deps="audiotoolbox"
2919 ilbc_at_decoder_deps="audiotoolbox"
2920 mp1_at_decoder_deps="audiotoolbox"
2921 mp2_at_decoder_deps="audiotoolbox"
2922 mp3_at_decoder_deps="audiotoolbox"
2923 mp1_at_decoder_select="mpegaudioheader"
2924 mp2_at_decoder_select="mpegaudioheader"
2925 mp3_at_decoder_select="mpegaudioheader"
2926 pcm_alaw_at_decoder_deps="audiotoolbox"
2927 pcm_mulaw_at_decoder_deps="audiotoolbox"
2928 qdmc_at_decoder_deps="audiotoolbox"
2929 qdm2_at_decoder_deps="audiotoolbox"
2930 aac_at_encoder_deps="audiotoolbox"
2931 aac_at_encoder_select="audio_frame_queue"
2932 alac_at_encoder_deps="audiotoolbox"
2933 alac_at_encoder_select="audio_frame_queue"
2934 ilbc_at_encoder_deps="audiotoolbox"
2935 ilbc_at_encoder_select="audio_frame_queue"
2936 pcm_alaw_at_encoder_deps="audiotoolbox"
2937 pcm_alaw_at_encoder_select="audio_frame_queue"
2938 pcm_mulaw_at_encoder_deps="audiotoolbox"
2939 pcm_mulaw_at_encoder_select="audio_frame_queue"
2940 chromaprint_muxer_deps="chromaprint"
2941 h264_videotoolbox_encoder_deps="pthreads"
2942 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2943 hevc_videotoolbox_encoder_deps="pthreads"
2944 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2945 libcelt_decoder_deps="libcelt"
2946 libcodec2_decoder_deps="libcodec2"
2947 libcodec2_encoder_deps="libcodec2"
2948 libfdk_aac_decoder_deps="libfdk_aac"
2949 libfdk_aac_encoder_deps="libfdk_aac"
2950 libfdk_aac_encoder_select="audio_frame_queue"
2951 libgme_demuxer_deps="libgme"
2952 libgsm_decoder_deps="libgsm"
2953 libgsm_encoder_deps="libgsm"
2954 libgsm_ms_decoder_deps="libgsm"
2955 libgsm_ms_encoder_deps="libgsm"
2956 libilbc_decoder_deps="libilbc"
2957 libilbc_encoder_deps="libilbc"
2958 libkvazaar_encoder_deps="libkvazaar"
2959 libmodplug_demuxer_deps="libmodplug"
2960 libmp3lame_encoder_deps="libmp3lame"
2961 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2962 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2963 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2964 libopencore_amrnb_encoder_select="audio_frame_queue"
2965 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2966 libopenh264_decoder_deps="libopenh264"
2967 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2968 libopenh264_encoder_deps="libopenh264"
2969 libopenjpeg_decoder_deps="libopenjpeg"
2970 libopenjpeg_encoder_deps="libopenjpeg"
2971 libopenmpt_demuxer_deps="libopenmpt"
2972 libopus_decoder_deps="libopus"
2973 libopus_encoder_deps="libopus"
2974 libopus_encoder_select="audio_frame_queue"
2975 librsvg_decoder_deps="librsvg"
2976 libshine_encoder_deps="libshine"
2977 libshine_encoder_select="audio_frame_queue"
2978 libspeex_decoder_deps="libspeex"
2979 libspeex_encoder_deps="libspeex"
2980 libspeex_encoder_select="audio_frame_queue"
2981 libtheora_encoder_deps="libtheora"
2982 libtwolame_encoder_deps="libtwolame"
2983 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2984 libvorbis_decoder_deps="libvorbis"
2985 libvorbis_encoder_deps="libvorbis libvorbisenc"
2986 libvorbis_encoder_select="audio_frame_queue"
2987 libvpx_vp8_decoder_deps="libvpx"
2988 libvpx_vp8_encoder_deps="libvpx"
2989 libvpx_vp9_decoder_deps="libvpx"
2990 libvpx_vp9_encoder_deps="libvpx"
2991 libwavpack_encoder_deps="libwavpack"
2992 libwavpack_encoder_select="audio_frame_queue"
2993 libwebp_encoder_deps="libwebp"
2994 libwebp_anim_encoder_deps="libwebp"
2995 libx262_encoder_deps="libx262"
2996 libx264_encoder_deps="libx264"
2997 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2998 libx264rgb_encoder_select="libx264_encoder"
2999 libx265_encoder_deps="libx265"
3000 libxavs_encoder_deps="libxavs"
3001 libxvid_encoder_deps="libxvid"
3002 libzvbi_teletext_decoder_deps="libzvbi"
3003 videotoolbox_suggest="coreservices"
3004 videotoolbox_deps="corefoundation coremedia corevideo"
3005 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3006
3007 # demuxers / muxers
3008 ac3_demuxer_select="ac3_parser"
3009 aiff_muxer_select="iso_media"
3010 asf_demuxer_select="riffdec"
3011 asf_o_demuxer_select="riffdec"
3012 asf_muxer_select="riffenc"
3013 asf_stream_muxer_select="asf_muxer"
3014 avi_demuxer_select="iso_media riffdec exif"
3015 avi_muxer_select="riffenc"
3016 caf_demuxer_select="iso_media riffdec"
3017 caf_muxer_select="iso_media"
3018 dash_muxer_select="mp4_muxer"
3019 dash_demuxer_deps="libxml2"
3020 dirac_demuxer_select="dirac_parser"
3021 dts_demuxer_select="dca_parser"
3022 dtshd_demuxer_select="dca_parser"
3023 dv_demuxer_select="dvprofile"
3024 dv_muxer_select="dvprofile"
3025 dxa_demuxer_select="riffdec"
3026 eac3_demuxer_select="ac3_parser"
3027 f4v_muxer_select="mov_muxer"
3028 fifo_muxer_deps="threads"
3029 flac_demuxer_select="flac_parser"
3030 hds_muxer_select="flv_muxer"
3031 hls_muxer_select="mpegts_muxer"
3032 hls_muxer_suggest="gcrypt openssl"
3033 image2_alias_pix_demuxer_select="image2_demuxer"
3034 image2_brender_pix_demuxer_select="image2_demuxer"
3035 ipod_muxer_select="mov_muxer"
3036 ismv_muxer_select="mov_muxer"
3037 matroska_audio_muxer_select="matroska_muxer"
3038 matroska_demuxer_select="iso_media riffdec"
3039 matroska_demuxer_suggest="bzlib lzo zlib"
3040 matroska_muxer_select="iso_media riffenc"
3041 mmf_muxer_select="riffenc"
3042 mov_demuxer_select="iso_media riffdec"
3043 mov_demuxer_suggest="zlib"
3044 mov_muxer_select="iso_media riffenc rtpenc_chain"
3045 mp3_demuxer_select="mpegaudio_parser"
3046 mp3_muxer_select="mpegaudioheader"
3047 mp4_muxer_select="mov_muxer"
3048 mpegts_demuxer_select="iso_media"
3049 mpegts_muxer_select="adts_muxer latm_muxer"
3050 mpegtsraw_demuxer_select="mpegts_demuxer"
3051 mxf_d10_muxer_select="mxf_muxer"
3052 mxf_opatom_muxer_select="mxf_muxer"
3053 nut_muxer_select="riffenc"
3054 nuv_demuxer_select="riffdec"
3055 oga_muxer_select="ogg_muxer"
3056 ogg_demuxer_select="dirac_parse"
3057 ogv_muxer_select="ogg_muxer"
3058 opus_muxer_select="ogg_muxer"
3059 psp_muxer_select="mov_muxer"
3060 rtp_demuxer_select="sdp_demuxer"
3061 rtp_muxer_select="golomb"
3062 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3063 rtsp_demuxer_select="http_protocol rtpdec"
3064 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3065 sap_demuxer_select="sdp_demuxer"
3066 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3067 sdp_demuxer_select="rtpdec"
3068 smoothstreaming_muxer_select="ismv_muxer"
3069 spdif_demuxer_select="adts_header"
3070 spdif_muxer_select="adts_header"
3071 spx_muxer_select="ogg_muxer"
3072 swf_demuxer_suggest="zlib"
3073 tak_demuxer_select="tak_parser"
3074 tg2_muxer_select="mov_muxer"
3075 tgp_muxer_select="mov_muxer"
3076 vobsub_demuxer_select="mpegps_demuxer"
3077 w64_demuxer_select="wav_demuxer"
3078 w64_muxer_select="wav_muxer"
3079 wav_demuxer_select="riffdec"
3080 wav_muxer_select="riffenc"
3081 webm_muxer_select="iso_media riffenc"
3082 webm_dash_manifest_demuxer_select="matroska_demuxer"
3083 wtv_demuxer_select="mpegts_demuxer riffdec"
3084 wtv_muxer_select="mpegts_muxer riffenc"
3085 xmv_demuxer_select="riffdec"
3086 xwma_demuxer_select="riffdec"
3087
3088 # indevs / outdevs
3089 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3090 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3091 alsa_indev_deps="alsa"
3092 alsa_outdev_deps="alsa"
3093 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3094 avfoundation_indev_suggest="coregraphics applicationservices"
3095 avfoundation_indev_extralibs="-framework Foundation"
3096 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3097 caca_outdev_deps="libcaca"
3098 decklink_deps_any="libdl LoadLibrary"
3099 decklink_indev_deps="decklink threads"
3100 decklink_indev_extralibs="-lstdc++"
3101 decklink_outdev_deps="decklink threads"
3102 decklink_outdev_extralibs="-lstdc++"
3103 libndi_newtek_indev_deps="libndi_newtek"
3104 libndi_newtek_indev_extralibs="-lndi"
3105 libndi_newtek_outdev_deps="libndi_newtek"
3106 libndi_newtek_outdev_extralibs="-lndi"
3107 dshow_indev_deps="IBaseFilter"
3108 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3109 fbdev_indev_deps="linux_fb_h"
3110 fbdev_outdev_deps="linux_fb_h"
3111 gdigrab_indev_deps="CreateDIBSection"
3112 gdigrab_indev_extralibs="-lgdi32"
3113 gdigrab_indev_select="bmp_decoder"
3114 iec61883_indev_deps="libiec61883"
3115 jack_indev_deps="libjack"
3116 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3117 kmsgrab_indev_deps="libdrm"
3118 lavfi_indev_deps="avfilter"
3119 libcdio_indev_deps="libcdio"
3120 libdc1394_indev_deps="libdc1394"
3121 openal_indev_deps="openal"
3122 opengl_outdev_deps="opengl"
3123 oss_indev_deps_any="sys_soundcard_h"
3124 oss_outdev_deps_any="sys_soundcard_h"
3125 pulse_indev_deps="libpulse"
3126 pulse_outdev_deps="libpulse"
3127 sdl2_outdev_deps="sdl2"
3128 sndio_indev_deps="sndio"
3129 sndio_outdev_deps="sndio"
3130 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3131 v4l2_indev_suggest="libv4l2"
3132 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3133 v4l2_outdev_suggest="libv4l2"
3134 vfwcap_indev_deps="vfw32 vfwcap_defines"
3135 xcbgrab_indev_deps="libxcb"
3136 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3137 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3138 xv_outdev_extralibs="-lXv -lX11 -lXext"
3139
3140 # protocols
3141 async_protocol_deps="threads"
3142 bluray_protocol_deps="libbluray"
3143 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3144 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3145 ffrtmpcrypt_protocol_select="tcp_protocol"
3146 ffrtmphttp_protocol_conflict="librtmp_protocol"
3147 ffrtmphttp_protocol_select="http_protocol"
3148 ftp_protocol_select="tcp_protocol"
3149 gopher_protocol_select="network"
3150 http_protocol_select="tcp_protocol"
3151 http_protocol_suggest="zlib"
3152 httpproxy_protocol_select="tcp_protocol"
3153 httpproxy_protocol_suggest="zlib"
3154 https_protocol_select="tls_protocol"
3155 https_protocol_suggest="zlib"
3156 icecast_protocol_select="http_protocol"
3157 librtmp_protocol_deps="librtmp"
3158 librtmpe_protocol_deps="librtmp"
3159 librtmps_protocol_deps="librtmp"
3160 librtmpt_protocol_deps="librtmp"
3161 librtmpte_protocol_deps="librtmp"
3162 libsmbclient_protocol_deps="libsmbclient gplv3"
3163 libssh_protocol_deps="libssh"
3164 libtls_conflict="openssl gnutls"
3165 mmsh_protocol_select="http_protocol"
3166 mmst_protocol_select="network"
3167 rtmp_protocol_conflict="librtmp_protocol"
3168 rtmp_protocol_select="tcp_protocol"
3169 rtmp_protocol_suggest="zlib"
3170 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3171 rtmpe_protocol_suggest="zlib"
3172 rtmps_protocol_conflict="librtmp_protocol"
3173 rtmps_protocol_select="tls_protocol"
3174 rtmps_protocol_suggest="zlib"
3175 rtmpt_protocol_select="ffrtmphttp_protocol"
3176 rtmpt_protocol_suggest="zlib"
3177 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3178 rtmpte_protocol_suggest="zlib"
3179 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3180 rtmpts_protocol_suggest="zlib"
3181 rtp_protocol_select="udp_protocol"
3182 schannel_conflict="openssl gnutls libtls"
3183 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3184 sctp_protocol_select="network"
3185 securetransport_conflict="openssl gnutls libtls"
3186 srtp_protocol_select="rtp_protocol srtp"
3187 tcp_protocol_select="network"
3188 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3189 tls_protocol_select="tcp_protocol"
3190 udp_protocol_select="network"
3191 udplite_protocol_select="network"
3192 unix_protocol_deps="sys_un_h"
3193 unix_protocol_select="network"
3194
3195 # filters
3196 afftfilt_filter_deps="avcodec"
3197 afftfilt_filter_select="fft"
3198 afir_filter_deps="avcodec"
3199 afir_filter_select="fft"
3200 amovie_filter_deps="avcodec avformat"
3201 aresample_filter_deps="swresample"
3202 ass_filter_deps="libass"
3203 atempo_filter_deps="avcodec"
3204 atempo_filter_select="rdft"
3205 azmq_filter_deps="libzmq"
3206 blackframe_filter_deps="gpl"
3207 boxblur_filter_deps="gpl"
3208 bs2b_filter_deps="libbs2b"
3209 colormatrix_filter_deps="gpl"
3210 convolve_filter_deps="avcodec"
3211 convolve_filter_select="fft"
3212 coreimage_filter_deps="coreimage appkit"
3213 coreimage_filter_extralibs="-framework OpenGL"
3214 coreimagesrc_filter_deps="coreimage appkit"
3215 coreimagesrc_filter_extralibs="-framework OpenGL"
3216 cover_rect_filter_deps="avcodec avformat gpl"
3217 cropdetect_filter_deps="gpl"
3218 deconvolve_filter_deps="avcodec"
3219 deconvolve_filter_select="fft"
3220 deinterlace_qsv_filter_deps="libmfx"
3221 deinterlace_vaapi_filter_deps="vaapi"
3222 delogo_filter_deps="gpl"
3223 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3224 deshake_filter_select="pixelutils"
3225 drawtext_filter_deps="libfreetype"
3226 drawtext_filter_suggest="libfontconfig libfribidi"
3227 elbg_filter_deps="avcodec"
3228 eq_filter_deps="gpl"
3229 fftfilt_filter_deps="avcodec"
3230 fftfilt_filter_select="rdft"
3231 find_rect_filter_deps="avcodec avformat gpl"
3232 firequalizer_filter_deps="avcodec"
3233 firequalizer_filter_select="rdft"
3234 flite_filter_deps="libflite"
3235 framerate_filter_select="pixelutils"
3236 frei0r_filter_deps="frei0r libdl"
3237 frei0r_src_filter_deps="frei0r libdl"
3238 fspp_filter_deps="gpl"
3239 geq_filter_deps="gpl"
3240 histeq_filter_deps="gpl"
3241 hqdn3d_filter_deps="gpl"
3242 interlace_filter_deps="gpl"
3243 kerndeint_filter_deps="gpl"
3244 ladspa_filter_deps="ladspa libdl"
3245 lv2_filter_deps="lv2"
3246 mcdeint_filter_deps="avcodec gpl"
3247 movie_filter_deps="avcodec avformat"
3248 mpdecimate_filter_deps="gpl"
3249 mpdecimate_filter_select="pixelutils"
3250 mptestsrc_filter_deps="gpl"
3251 negate_filter_deps="lut_filter"
3252 nnedi_filter_deps="gpl"
3253 ocr_filter_deps="libtesseract"
3254 ocv_filter_deps="libopencv"
3255 openclsrc_filter_deps="opencl"
3256 overlay_opencl_filter_deps="opencl"
3257 overlay_qsv_filter_deps="libmfx"
3258 overlay_qsv_filter_select="qsvvpp"
3259 owdenoise_filter_deps="gpl"
3260 pan_filter_deps="swresample"
3261 perspective_filter_deps="gpl"
3262 phase_filter_deps="gpl"
3263 pp7_filter_deps="gpl"
3264 pp_filter_deps="gpl postproc"
3265 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3266 program_opencl_filter_deps="opencl"
3267 pullup_filter_deps="gpl"
3268 removelogo_filter_deps="avcodec avformat swscale"
3269 repeatfields_filter_deps="gpl"
3270 resample_filter_deps="avresample"
3271 rubberband_filter_deps="librubberband"
3272 sab_filter_deps="gpl swscale"
3273 scale2ref_filter_deps="swscale"
3274 scale_filter_deps="swscale"
3275 scale_qsv_filter_deps="libmfx"
3276 select_filter_select="pixelutils"
3277 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3278 showcqt_filter_deps="avcodec avformat swscale"
3279 showcqt_filter_suggest="libfontconfig libfreetype"
3280 showcqt_filter_select="fft"
3281 showfreqs_filter_deps="avcodec"
3282 showfreqs_filter_select="fft"
3283 showspectrum_filter_deps="avcodec"
3284 showspectrum_filter_select="fft"
3285 showspectrumpic_filter_deps="avcodec"
3286 showspectrumpic_filter_select="fft"
3287 signature_filter_deps="gpl avcodec avformat"
3288 smartblur_filter_deps="gpl swscale"
3289 sofalizer_filter_deps="libmysofa avcodec"
3290 sofalizer_filter_select="fft"
3291 spectrumsynth_filter_deps="avcodec"
3292 spectrumsynth_filter_select="fft"
3293 spp_filter_deps="gpl avcodec"
3294 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3295 stereo3d_filter_deps="gpl"
3296 subtitles_filter_deps="avformat avcodec libass"
3297 super2xsai_filter_deps="gpl"
3298 pixfmts_super2xsai_test_deps="super2xsai_filter"
3299 tinterlace_filter_deps="gpl"
3300 tinterlace_merge_test_deps="tinterlace_filter"
3301 tinterlace_pad_test_deps="tinterlace_filter"
3302 tonemap_filter_deps="const_nan"
3303 unsharp_opencl_filter_deps="opencl"
3304 uspp_filter_deps="gpl avcodec"
3305 vaguedenoiser_filter_deps="gpl"
3306 vidstabdetect_filter_deps="libvidstab"
3307 vidstabtransform_filter_deps="libvidstab"
3308 libvmaf_filter_deps="libvmaf pthreads"
3309 zmq_filter_deps="libzmq"
3310 zoompan_filter_deps="swscale"
3311 zscale_filter_deps="libzimg const_nan"
3312 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3313 vpp_qsv_filter_deps="libmfx"
3314 vpp_qsv_filter_select="qsvvpp"
3315
3316 # examples
3317 avio_dir_cmd_deps="avformat avutil"
3318 avio_reading_deps="avformat avcodec avutil"
3319 decode_audio_example_deps="avcodec avutil"
3320 decode_video_example_deps="avcodec avutil"
3321 demuxing_decoding_example_deps="avcodec avformat avutil"
3322 encode_audio_example_deps="avcodec avutil"
3323 encode_video_example_deps="avcodec avutil"
3324 extract_mvs_example_deps="avcodec avformat avutil"
3325 filter_audio_example_deps="avfilter avutil"
3326 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3327 filtering_video_example_deps="avfilter avcodec avformat avutil"
3328 http_multiclient_example_deps="avformat avutil fork"
3329 hw_decode_example_deps="avcodec avformat avutil"
3330 metadata_example_deps="avformat avutil"
3331 muxing_example_deps="avcodec avformat avutil swscale"
3332 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3333 remuxing_example_deps="avcodec avformat avutil"
3334 resampling_audio_example_deps="avutil swresample"
3335 scaling_video_example_deps="avutil swscale"
3336 transcode_aac_example_deps="avcodec avformat swresample"
3337 transcoding_example_deps="avfilter avcodec avformat avutil"
3338 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3339 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3340
3341 # EXTRALIBS_LIST
3342 cpu_init_extralibs="pthreads_extralibs"
3343 cws2fws_extralibs="zlib_extralibs"
3344
3345 # libraries, in linking order
3346 avcodec_deps="avutil"
3347 avcodec_suggest="libm"
3348 avcodec_select="null_bsf"
3349 avdevice_deps="avformat avcodec avutil"
3350 avdevice_suggest="libm"
3351 avfilter_deps="avutil"
3352 avfilter_suggest="libm"
3353 avformat_deps="avcodec avutil"
3354 avformat_suggest="libm network zlib"
3355 avresample_deps="avutil"
3356 avresample_suggest="libm"
3357 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3358 postproc_deps="avutil gpl"
3359 postproc_suggest="libm"
3360 swresample_deps="avutil"
3361 swresample_suggest="libm libsoxr"
3362 swscale_deps="avutil"
3363 swscale_suggest="libm"
3364
3365 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3366 avfilter_extralibs="pthreads_extralibs"
3367 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3368
3369 # programs
3370 ffmpeg_deps="avcodec avfilter avformat swresample"
3371 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3372                null_filter
3373                trim_filter"
3374 ffmpeg_suggest="ole32 psapi shell32"
3375 ffplay_deps="avcodec avformat swscale swresample sdl2"
3376 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3377 ffplay_suggest="shell32"
3378 ffprobe_deps="avcodec avformat"
3379 ffprobe_suggest="shell32"
3380
3381 # documentation
3382 podpages_deps="perl"
3383 manpages_deps="perl pod2man"
3384 htmlpages_deps="perl"
3385 htmlpages_deps_any="makeinfo_html texi2html"
3386 txtpages_deps="perl makeinfo"
3387 doc_deps_any="manpages htmlpages podpages txtpages"
3388
3389 # default parameters
3390
3391 logfile="ffbuild/config.log"
3392
3393 # installation paths
3394 prefix_default="/usr/local"
3395 bindir_default='${prefix}/bin'
3396 datadir_default='${prefix}/share/ffmpeg'
3397 docdir_default='${prefix}/share/doc/ffmpeg'
3398 incdir_default='${prefix}/include'
3399 libdir_default='${prefix}/lib'
3400 mandir_default='${prefix}/share/man'
3401
3402 # toolchain
3403 ar_default="ar"
3404 cc_default="gcc"
3405 cxx_default="g++"
3406 host_cc_default="gcc"
3407 doxygen_default="doxygen"
3408 install="install"
3409 ln_s_default="ln -s -f"
3410 nm_default="nm -g"
3411 pkg_config_default=pkg-config
3412 ranlib_default="ranlib"
3413 strip_default="strip"
3414 version_script='--version-script'
3415 objformat="elf32"
3416 x86asmexe_default="nasm"
3417 windres_default="windres"
3418 nvcc_default="nvcc"
3419 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3420 striptype="direct"
3421
3422 # OS
3423 target_os_default=$(tolower $(uname -s))
3424 host_os=$target_os_default
3425
3426 # machine
3427 if test "$target_os_default" = aix; then
3428     arch_default=$(uname -p)
3429     strip_default="strip -X32_64"
3430 else
3431     arch_default=$(uname -m)
3432 fi
3433 cpu="generic"
3434 intrinsics="none"
3435
3436 # configurable options
3437 enable $PROGRAM_LIST
3438 enable $DOCUMENT_LIST
3439 enable $EXAMPLE_LIST
3440 enable $(filter_out avresample $LIBRARY_LIST)
3441 enable stripping
3442
3443 enable asm
3444 enable debug
3445 enable doc
3446 enable faan faandct faanidct
3447 enable optimizations
3448 enable runtime_cpudetect
3449 enable safe_bitstream_reader
3450 enable static
3451 enable swscale_alpha
3452 enable valgrind_backtrace
3453
3454 sws_max_filter_size_default=256
3455 set_default sws_max_filter_size
3456
3457 # internal components are enabled by default
3458 enable $EXTRALIBS_LIST
3459
3460 # Avoid external, non-system, libraries getting enabled by dependency resolution
3461 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3462
3463 # build settings
3464 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3465 LIBPREF="lib"
3466 LIBSUF=".a"
3467 FULLNAME='$(NAME)$(BUILDSUF)'
3468 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3469 SLIBPREF="lib"
3470 SLIBSUF=".so"
3471 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3472 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3473 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3474 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3475 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3476 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3477 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3478
3479 asflags_filter=echo
3480 cflags_filter=echo
3481 ldflags_filter=echo
3482
3483 AS_C='-c'
3484 AS_O='-o $@'
3485 CC_C='-c'
3486 CC_E='-E -o $@'
3487 CC_O='-o $@'
3488 CXX_C='-c'
3489 CXX_O='-o $@'
3490 OBJCC_C='-c'
3491 OBJCC_E='-E -o $@'
3492 OBJCC_O='-o $@'
3493 X86ASM_O='-o $@'
3494 LD_O='-o $@'
3495 LD_LIB='-l%'
3496 LD_PATH='-L'
3497 HOSTCC_C='-c'
3498 HOSTCC_E='-E -o $@'
3499 HOSTCC_O='-o $@'
3500 HOSTLD_O='-o $@'
3501 NVCC_C='-c'
3502 NVCC_O='-o $@'
3503
3504 host_extralibs='-lm'
3505 host_cflags_filter=echo
3506 host_ldflags_filter=echo
3507
3508 target_path='$(CURDIR)'
3509
3510 # since the object filename is not given with the -MM flag, the compiler
3511 # is only able to print the basename, and we must add the path ourselves
3512 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3513 DEPFLAGS='-MM'
3514
3515 mkdir -p ffbuild
3516
3517 # find source path
3518 if test -f configure; then
3519     source_path=.
3520 else
3521     source_path=$(cd $(dirname "$0"); pwd)
3522     case "$source_path" in
3523         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3524     esac
3525     test -e "$source_path/config.h" &&
3526         die "Out of tree builds are impossible with config.h in source dir."
3527 fi
3528
3529 for v in "$@"; do
3530     r=${v#*=}
3531     l=${v%"$r"}
3532     r=$(sh_quote "$r")
3533     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3534 done
3535
3536 find_things(){
3537     thing=$1
3538     pattern=$2
3539     file=$source_path/$3
3540     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3541 }
3542
3543 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3544
3545 find_things_extern(){
3546     thing=$1
3547     pattern=$2
3548     file=$source_path/$3
3549     out=${4:-$thing}
3550     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3551 }
3552
3553 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3554 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3555 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3556 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3557 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3558 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3559 CODEC_LIST="
3560     $ENCODER_LIST
3561     $DECODER_LIST
3562 "
3563 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3564 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3565 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3566 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3567
3568 AVCODEC_COMPONENTS_LIST="
3569     $BSF_LIST
3570     $DECODER_LIST
3571     $ENCODER_LIST
3572     $HWACCEL_LIST
3573     $PARSER_LIST
3574 "
3575
3576 AVDEVICE_COMPONENTS_LIST="
3577     $INDEV_LIST
3578     $OUTDEV_LIST
3579 "
3580
3581 AVFILTER_COMPONENTS_LIST="
3582     $FILTER_LIST
3583 "
3584
3585 AVFORMAT_COMPONENTS_LIST="
3586     $DEMUXER_LIST
3587     $MUXER_LIST
3588     $PROTOCOL_LIST
3589 "
3590
3591 ALL_COMPONENTS="
3592     $AVCODEC_COMPONENTS_LIST
3593     $AVDEVICE_COMPONENTS_LIST
3594     $AVFILTER_COMPONENTS_LIST
3595     $AVFORMAT_COMPONENTS_LIST
3596 "
3597
3598 for n in $COMPONENT_LIST; do
3599     v=$(toupper ${n%s})_LIST
3600     eval enable \$$v
3601     eval ${n}_if_any="\$$v"
3602 done
3603
3604 enable $ARCH_EXT_LIST
3605
3606 die_unknown(){
3607     echo "Unknown option \"$1\"."
3608     echo "See $0 --help for available options."
3609     exit 1
3610 }
3611
3612 print_in_columns() {
3613     cols=$(expr $ncols / 24)
3614     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3615 }
3616
3617 show_list() {
3618     suffix=_$1
3619     shift
3620     echo $* | sed s/$suffix//g | print_in_columns
3621     exit 0
3622 }
3623
3624 rand_list(){
3625     IFS=', '
3626     set -- $*
3627     unset IFS
3628     for thing; do
3629         comp=${thing%:*}
3630         prob=${thing#$comp}
3631         prob=${prob#:}
3632         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3633         echo "prob ${prob:-0.5}"
3634         printf '%s\n' $comp
3635     done
3636 }
3637
3638 do_random(){
3639     action=$1
3640     shift
3641     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3642     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3643 }
3644
3645 for opt do
3646     optval="${opt#*=}"
3647     case "$opt" in
3648         --extra-ldflags=*)
3649             add_ldflags $optval
3650         ;;
3651         --extra-ldexeflags=*)
3652             add_ldexeflags $optval
3653         ;;
3654         --extra-ldsoflags=*)
3655             add_ldsoflags $optval
3656         ;;
3657         --extra-ldlibflags=*)
3658             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3659                  "removed in the future. Use --extra-ldsoflags instead."
3660             add_ldsoflags $optval
3661         ;;
3662         --extra-libs=*)
3663             add_extralibs $optval
3664         ;;
3665         --disable-devices)
3666             disable $INDEV_LIST $OUTDEV_LIST
3667         ;;
3668         --enable-debug=*)
3669             debuglevel="$optval"
3670         ;;
3671         --disable-programs)
3672             disable $PROGRAM_LIST
3673         ;;
3674         --disable-everything)
3675             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3676         ;;
3677         --disable-all)
3678             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3679             disable $LIBRARY_LIST $PROGRAM_LIST doc
3680             enable avutil
3681         ;;
3682         --enable-random|--disable-random)
3683             action=${opt%%-random}
3684             do_random ${action#--} $COMPONENT_LIST
3685         ;;
3686         --enable-random=*|--disable-random=*)
3687             action=${opt%%-random=*}
3688             do_random ${action#--} $optval
3689         ;;
3690         --enable-sdl)
3691             enable sdl2
3692         ;;
3693         --enable-*=*|--disable-*=*)
3694             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3695             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3696             eval list=\$$(toupper $thing)_LIST
3697             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3698             list=$(filter "$name" $list)
3699             [ "$list" = "" ] && warn "Option $opt did not match anything"
3700             $action $list
3701         ;;
3702         --enable-yasm|--disable-yasm)
3703             warn "The ${opt} option is only provided for compatibility and will be\n"\
3704                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3705             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3706         ;;
3707         --yasmexe=*)
3708             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3709                  "removed in the future. Use --x86asmexe instead."
3710             x86asmexe="$optval"
3711         ;;
3712         --enable-?*|--disable-?*)
3713             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3714             if is_in $option $COMPONENT_LIST; then
3715                 test $action = disable && action=unset
3716                 eval $action \$$(toupper ${option%s})_LIST
3717             elif is_in $option $CMDLINE_SELECT; then
3718                 $action $option
3719             else
3720                 die_unknown $opt
3721             fi
3722         ;;
3723         --list-*)
3724             NAME="${opt#--list-}"
3725             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3726             NAME=${NAME%s}
3727             eval show_list $NAME \$$(toupper $NAME)_LIST
3728         ;;
3729         --help|-h) show_help
3730         ;;
3731         --quiet|-q) quiet=yes
3732         ;;
3733         --fatal-warnings) enable fatal_warnings
3734         ;;
3735         --libfuzzer=*)
3736             libfuzzer_path="$optval"
3737         ;;
3738         *)
3739             optname="${opt%%=*}"
3740             optname="${optname#--}"
3741             optname=$(echo "$optname" | sed 's/-/_/g')
3742             if is_in $optname $CMDLINE_SET; then
3743                 eval $optname='$optval'
3744             elif is_in $optname $CMDLINE_APPEND; then
3745                 append $optname "$optval"
3746             else
3747                 die_unknown $opt
3748             fi
3749         ;;
3750     esac
3751 done
3752
3753 for e in $env; do
3754     eval "export $e"
3755 done
3756
3757 if disabled autodetect; then
3758
3759     # Unless iconv is explicitely disabled by the user, we still want to probe
3760     # for the iconv from the libc.
3761     disabled iconv || enable libc_iconv
3762
3763     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3764     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3765 fi
3766 # Mark specifically enabled, but normally autodetected libraries as requested.
3767 for lib in $AUTODETECT_LIBS; do
3768     enabled $lib && request $lib
3769 done
3770 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3771 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3772 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3773
3774 disabled logging && logfile=/dev/null
3775
3776 # command line configuration sanity checks
3777
3778 # we need to build at least one lib type
3779 if ! enabled_any static shared; then
3780     cat <<EOF
3781 At least one library type must be built.
3782 Specify --enable-static to build the static libraries or --enable-shared to
3783 build the shared libraries as well. To only build the shared libraries specify
3784 --disable-static in addition to --enable-shared.
3785 EOF
3786     exit 1
3787 fi
3788
3789 die_license_disabled() {
3790     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3791 }
3792
3793 die_license_disabled_gpl() {
3794     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3795 }
3796
3797 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3798 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3799
3800 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3801 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3802
3803 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3804
3805 if enabled nonfree; then
3806     license="nonfree and unredistributable"
3807 elif enabled gplv3; then
3808     license="GPL version 3 or later"
3809 elif enabled lgplv3; then
3810     license="LGPL version 3 or later"
3811 elif enabled gpl; then
3812     license="GPL version 2 or later"
3813 else
3814     license="LGPL version 2.1 or later"
3815 fi
3816
3817 enabled_all gnutls openssl &&
3818     die "GnuTLS and OpenSSL must not be enabled at the same time."
3819
3820 # Disable all the library-specific components if the library itself
3821 # is disabled, see AVCODEC_LIST and following _LIST variables.
3822
3823 disable_components(){
3824     disabled ${1} && disable $(
3825         eval components="\$$(toupper ${1})_COMPONENTS"
3826         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3827     )
3828 }
3829
3830 map 'disable_components $v' $LIBRARY_LIST
3831
3832 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3833 set >> $logfile
3834
3835 test -n "$valgrind" && toolchain="valgrind-memcheck"
3836
3837 enabled ossfuzz && {
3838     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3839     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3840 }
3841
3842 case "$toolchain" in
3843     *-asan)
3844         cc_default="${toolchain%-asan}"
3845         add_cflags  -fsanitize=address
3846         add_ldflags -fsanitize=address
3847     ;;
3848     *-msan)
3849         cc_default="${toolchain%-msan}"
3850         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3851         add_ldflags -fsanitize=memory
3852     ;;
3853     *-tsan)
3854         cc_default="${toolchain%-tsan}"
3855         add_cflags  -fsanitize=thread -fPIE
3856         add_ldflags -fsanitize=thread -pie
3857         case "$toolchain" in
3858             gcc-tsan)
3859                 add_cflags  -fPIC
3860                 add_ldflags -fPIC
3861                 ;;
3862         esac
3863     ;;
3864     *-usan)
3865         cc_default="${toolchain%-usan}"
3866         add_cflags  -fsanitize=undefined
3867         add_ldflags -fsanitize=undefined
3868     ;;
3869     valgrind-*)
3870         target_exec_default="valgrind"
3871         case "$toolchain" in
3872             valgrind-massif)
3873                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3874                 ;;
3875             valgrind-memcheck)
3876                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3877                 ;;
3878         esac
3879     ;;
3880     msvc)
3881         # Check whether the current MSVC version needs the C99 converter.
3882         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3883         # support enough of C99 to build ffmpeg. Default to the new
3884         # behaviour if the regexp was unable to match anything, since this
3885         # successfully parses the version number of existing supported
3886         # versions that require the converter (MSVC 2010 and 2012).
3887         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3888         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3889             cc_default="cl"
3890             cxx_default="cl"
3891         else
3892             cc_default="c99wrap cl"
3893             cxx_default="c99wrap cl"
3894         fi
3895         ld_default="$source_path/compat/windows/mslink"
3896         nm_default="dumpbin -symbols"
3897         ar_default="lib"
3898         case "$arch" in
3899         aarch64|arm64)
3900             as_default="armasm64"
3901             ;;
3902         arm*)
3903             as_default="armasm"
3904             ;;
3905         esac
3906         target_os_default="win32"
3907         # Use a relative path for TMPDIR. This makes sure all the
3908         # ffconf temp files are written with a relative path, avoiding
3909         # issues with msys/win32 path conversion for MSVC parameters
3910         # such as -Fo<file> or -out:<file>.
3911         TMPDIR=.
3912     ;;
3913     icl)
3914         cc_default="icl"
3915         ld_default="xilink"
3916         nm_default="dumpbin -symbols"
3917         ar_default="xilib"
3918         target_os_default="win32"
3919         TMPDIR=.
3920     ;;
3921     gcov)
3922         add_cflags  -fprofile-arcs -ftest-coverage
3923         add_ldflags -fprofile-arcs -ftest-coverage
3924     ;;
3925     llvm-cov)
3926         add_cflags -fprofile-arcs -ftest-coverage
3927         add_ldflags --coverage
3928     ;;
3929     hardened)
3930         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3931         add_cflags   -fno-strict-overflow -fstack-protector-all
3932         add_ldflags  -Wl,-z,relro -Wl,-z,now
3933         add_cflags   -fPIE
3934         add_ldexeflags -fPIE -pie
3935     ;;
3936     ?*)
3937         die "Unknown toolchain $toolchain"
3938     ;;
3939 esac
3940
3941 if test -n "$cross_prefix"; then
3942     test -n "$arch" && test -n "$target_os" ||
3943         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3944     enable cross_compile
3945 fi
3946
3947 ar_default="${cross_prefix}${ar_default}"
3948 cc_default="${cross_prefix}${cc_default}"
3949 cxx_default="${cross_prefix}${cxx_default}"
3950 nm_default="${cross_prefix}${nm_default}"
3951 pkg_config_default="${cross_prefix}${pkg_config_default}"
3952 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3953     ranlib_default="${cross_prefix}${ranlib_default} -D"
3954 else
3955     ranlib_default="${cross_prefix}${ranlib_default}"
3956 fi
3957 strip_default="${cross_prefix}${strip_default}"
3958 windres_default="${cross_prefix}${windres_default}"
3959
3960 sysinclude_default="${sysroot}/usr/include"
3961
3962 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3963     target_exec target_os x86asmexe nvcc
3964 enabled cross_compile || host_cc_default=$cc
3965 set_default host_cc
3966
3967 pkg_config_fail_message=""
3968 if ! $pkg_config --version >/dev/null 2>&1; then
3969     warn "$pkg_config not found, library detection may fail."
3970     pkg_config=false
3971 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3972     pkg_config_fail_message="
3973 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3974 fi
3975
3976 if test $doxygen != $doxygen_default && \
3977   ! $doxygen --version >/dev/null 2>&1; then
3978     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3979 fi
3980
3981 exesuf() {
3982     case $1 in
3983         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3984     esac
3985 }
3986
3987 EXESUF=$(exesuf $target_os)
3988 HOSTEXESUF=$(exesuf $host_os)
3989
3990 # set temporary file name
3991 : ${TMPDIR:=$TEMPDIR}
3992 : ${TMPDIR:=$TMP}
3993 : ${TMPDIR:=/tmp}
3994
3995 if [ -n "$tempprefix" ] ; then
3996     mktemp(){
3997         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3998         echo "$tmpname"
3999         mkdir "$tmpname"
4000     }
4001 elif ! test_cmd mktemp -u XXXXXX; then
4002     # simple replacement for missing mktemp
4003     # NOT SAFE FOR GENERAL USE
4004     mktemp(){
4005         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4006         echo "$tmpname"
4007         mkdir "$tmpname"
4008     }
4009 fi
4010
4011 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4012     die "Unable to create temporary directory in $TMPDIR."
4013
4014 tmpfile(){
4015     tmp="${FFTMPDIR}/test"$2
4016     (set -C; exec > $tmp) 2> /dev/null ||
4017         die "Unable to create temporary file in $FFTMPDIR."
4018     eval $1=$tmp
4019 }
4020
4021 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4022 trap 'exit 2' INT
4023
4024 tmpfile TMPASM .asm
4025 tmpfile TMPC   .c
4026 tmpfile TMPCPP .cpp
4027 tmpfile TMPE   $EXESUF
4028 tmpfile TMPH   .h
4029 tmpfile TMPM   .m
4030 tmpfile TMPO   .o
4031 tmpfile TMPS   .S
4032 tmpfile TMPSH  .sh
4033 tmpfile TMPV   .ver
4034
4035 unset -f mktemp
4036
4037 chmod +x $TMPE
4038
4039 # make sure we can execute files in $TMPDIR
4040 cat > $TMPSH 2>> $logfile <<EOF
4041 #! /bin/sh
4042 EOF
4043 chmod +x $TMPSH >> $logfile 2>&1
4044 if ! $TMPSH >> $logfile 2>&1; then
4045     cat <<EOF
4046 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4047 variable to another directory and make sure that it is not mounted noexec.
4048 EOF
4049     die "Sanity test failed."
4050 fi
4051
4052 armasm_flags(){
4053     for flag; do
4054         case $flag in
4055             # Filter out MSVC cl.exe options from cflags that shouldn't
4056             # be passed to gas-preprocessor
4057             -M[TD]*)                                            ;;
4058             *)                  echo $flag                      ;;
4059         esac
4060    done
4061 }
4062
4063 cparser_flags(){
4064     for flag; do
4065         case $flag in
4066             -Wno-switch)             echo -Wno-switch-enum ;;
4067             -Wno-format-zero-length) ;;
4068             -Wdisabled-optimization) ;;
4069             -Wno-pointer-sign)       echo -Wno-other ;;
4070             *)                       echo $flag ;;
4071         esac
4072     done
4073 }
4074
4075 msvc_common_flags(){
4076     for flag; do
4077         case $flag in
4078             # In addition to specifying certain flags under the compiler
4079             # specific filters, they must be specified here as well or else the
4080             # generic catch all at the bottom will print the original flag.
4081             -Wall)                ;;
4082             -Wextra)              ;;
4083             -std=c99)             ;;
4084             # Common flags
4085             -fomit-frame-pointer) ;;
4086             -g)                   echo -Z7 ;;
4087             -fno-math-errno)      ;;
4088             -fno-common)          ;;
4089             -fno-signed-zeros)    ;;
4090             -fPIC)                ;;
4091             -mthumb)              ;;
4092             -march=*)             ;;
4093             -lz)                  echo zlib.lib ;;
4094             -lx264)               echo libx264.lib ;;
4095             -lstdc++)             ;;
4096             -l*)                  echo ${flag#-l}.lib ;;
4097             -LARGEADDRESSAWARE)   echo $flag ;;
4098             -L*)                  echo -libpath:${flag#-L} ;;
4099             *)                    echo $flag ;;
4100         esac
4101     done
4102 }
4103
4104 msvc_flags(){
4105     msvc_common_flags "$@"
4106     for flag; do
4107         case $flag in
4108             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4109                                        -wd4554 ;;
4110             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4111                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4112                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4113                                        -wd4307 \
4114                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4115         esac
4116     done
4117 }
4118
4119 icl_flags(){
4120     msvc_common_flags "$@"
4121     for flag; do
4122         case $flag in
4123             # Despite what Intel's documentation says -Wall, which is supported
4124             # on Windows, does enable remarks so disable them here.
4125             -Wall)                echo $flag -Qdiag-disable:remark ;;
4126             -std=c99)             echo -Qstd=c99 ;;
4127             -flto)                echo -ipo ;;
4128         esac
4129     done
4130 }
4131
4132 icc_flags(){
4133     for flag; do
4134         case $flag in
4135             -flto)                echo -ipo ;;
4136             *)                    echo $flag ;;
4137         esac
4138     done
4139 }
4140
4141 suncc_flags(){
4142     for flag; do
4143         case $flag in
4144             -march=*|-mcpu=*)
4145                 case "${flag#*=}" in
4146                     native)                   echo -xtarget=native       ;;
4147                     v9|niagara)               echo -xarch=sparc          ;;
4148                     ultrasparc)               echo -xarch=sparcvis       ;;
4149                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4150                     i586|pentium)             echo -xchip=pentium        ;;
4151                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4152                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4153                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4154                     pentium4*)          echo -xtarget=pentium4           ;;
4155                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4156                     *-sse3)             echo -xarch=sse3                 ;;
4157                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4158                     bonnell)                   echo -xarch=ssse3         ;;
4159                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4160                     westmere)                  echo -xtarget=westmere    ;;
4161                     silvermont)                echo -xarch=sse4_2        ;;
4162                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4163                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4164                                                echo -xarch=avx           ;;
4165                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4166                     btver1)                    echo -xarch=amdsse4a      ;;
4167                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4168                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4169                     k8|opteron|athlon64|athlon-fx)
4170                                                echo -xarch=sse2a         ;;
4171                     athlon*)                   echo -xarch=pentium_proa  ;;
4172                 esac
4173                 ;;
4174             -std=c99)             echo -xc99              ;;
4175             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4176             -fPIC)                echo -KPIC -xcode=pic32 ;;
4177             -W*,*)                echo $flag              ;;
4178             -f*-*|-W*|-mimpure-text)                      ;;
4179             -shared)              echo -G                 ;;
4180             *)                    echo $flag              ;;
4181         esac
4182     done
4183 }
4184
4185 probe_cc(){
4186     pfx=$1
4187     _cc=$2
4188     first=$3
4189
4190     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4191     unset _ld_o _ldflags _ld_lib _ld_path
4192     unset _depflags _DEPCMD _DEPFLAGS
4193     _flags_filter=echo
4194
4195     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4196         true # no-op to avoid reading stdin in following checks
4197     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4198         _type=llvm_gcc
4199         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4200         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4201         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4202         _cflags_speed='-O3'
4203         _cflags_size='-Os'
4204     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4205         _type=gcc
4206         gcc_version=$($_cc --version | head -n1)
4207         gcc_basever=$($_cc -dumpversion)
4208         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4209         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4210         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4211         case $gcc_basever in
4212             2) ;;
4213             2.*) ;;
4214             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4215         esac
4216         if [ "$first" = true ]; then
4217             case $gcc_basever in
4218                 4.2*)
4219                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4220             esac
4221         fi
4222         _cflags_speed='-O3'
4223         _cflags_size='-Os'
4224     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4225         _type=icc
4226         _ident=$($_cc --version | head -n1)
4227         _depflags='-MMD'
4228         _cflags_speed='-O3'
4229         _cflags_size='-Os'
4230         _cflags_noopt='-O1'
4231         _flags_filter=icc_flags
4232     elif $_cc -v 2>&1 | grep -q xlc; then
4233         _type=xlc
4234         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4235         _cflags_speed='-O5'
4236         _cflags_size='-O5 -qcompact'
4237     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4238         test -d "$sysroot" || die "No valid sysroot specified."
4239         _type=armcc
4240         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4241         armcc_conf="$PWD/armcc.conf"
4242         $_cc --arm_linux_configure                 \
4243              --arm_linux_config_file="$armcc_conf" \
4244              --configure_sysroot="$sysroot"        \
4245              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4246              die "Error creating armcc configuration file."
4247         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4248         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4249         as_default="${cross_prefix}gcc"
4250         _depflags='-MMD'
4251         _cflags_speed='-O3'
4252         _cflags_size='-Os'
4253     elif $_cc -v 2>&1 | grep -q clang; then
4254         _type=clang
4255         _ident=$($_cc --version 2>/dev/null | head -n1)
4256         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4257         _cflags_speed='-O3'
4258         _cflags_size='-Oz'
4259     elif $_cc -V 2>&1 | grep -q Sun; then
4260         _type=suncc
4261         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4262         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4263         _DEPFLAGS='-xM1 -xc99'
4264         _ldflags='-std=c99'
4265         _cflags_speed='-O5'
4266         _cflags_size='-O5 -xspace'
4267         _flags_filter=suncc_flags
4268     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4269         _type=pathscale
4270         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4271         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4272         _cflags_speed='-O2'
4273         _cflags_size='-Os'
4274         _flags_filter='filter_out -Wdisabled-optimization'
4275     elif $_cc -v 2>&1 | grep -q Open64; then
4276         _type=open64
4277         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4278         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4279         _cflags_speed='-O2'
4280         _cflags_size='-Os'
4281         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4282     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4283         _type=armasm
4284         _ident=$($_cc | head -n1)
4285         # 4509: "This form of conditional instruction is deprecated"
4286         _flags="-nologo -ignore 4509"
4287         _flags_filter=armasm_flags
4288     elif $_cc 2>&1 | grep -q Intel; then
4289         _type=icl
4290         _ident=$($_cc 2>&1 | head -n1)
4291         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4292         # Not only is O3 broken on 13.x+ but it is slower on all previous
4293         # versions (tested) as well.
4294         _cflags_speed="-O2"
4295         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4296         if $_cc 2>&1 | grep -q Linker; then
4297             _ld_o='-out:$@'
4298         else
4299             _ld_o='-Fe$@'
4300         fi
4301         _cc_o='-Fo$@'
4302         _cc_e='-P'
4303         _flags_filter=icl_flags
4304         _ld_lib='lib%.a'
4305         _ld_path='-libpath:'
4306         # -Qdiag-error to make icl error when seeing certain unknown arguments
4307         _flags='-nologo -Qdiag-error:4044,10157'
4308         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4309         # with MSVC which enables it by default.
4310         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4311         disable stripping
4312     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4313         # lld can emulate multiple different linkers; in ms link.exe mode,
4314         # the -? parameter gives the help output which contains an identifyable
4315         # string, while it gives an error in other modes.
4316         _type=lld-link
4317         # The link.exe mode doesn't have a switch for getting the version,
4318         # but we can force it back to gnu mode and get the version from there.
4319         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4320         _ld_o='-out:$@'
4321         _flags_filter=msvc_flags
4322         _ld_lib='lib%.a'
4323         _ld_path='-libpath:'
4324     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4325         _type=msvc
4326         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4327         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4328         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4329         _cflags_speed="-O2"
4330         _cflags_size="-O1"
4331         _cflags_noopt="-O1"
4332         if $_cc -nologo- 2>&1 | grep -q Linker; then
4333             _ld_o='-out:$@'
4334         else
4335             _ld_o='-Fe$@'
4336         fi
4337         _cc_o='-Fo$@'
4338         _cc_e='-P -Fi$@'
4339         _flags_filter=msvc_flags
4340         _ld_lib='lib%.a'
4341         _ld_path='-libpath:'
4342         _flags='-nologo'
4343         disable stripping
4344     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4345         _type=cparser
4346         _ident=$($_cc --version | head -n1)
4347         _depflags='-MMD'
4348         _cflags_speed='-O4'
4349         _cflags_size='-O2'
4350         _flags_filter=cparser_flags
4351     fi
4352
4353     eval ${pfx}_type=\$_type
4354     eval ${pfx}_ident=\$_ident
4355 }
4356
4357 set_ccvars(){
4358     eval ${1}_C=\${_cc_c-\${${1}_C}}
4359     eval ${1}_E=\${_cc_e-\${${1}_E}}
4360     eval ${1}_O=\${_cc_o-\${${1}_O}}
4361
4362     if [ -n "$_depflags" ]; then
4363         eval ${1}_DEPFLAGS=\$_depflags
4364     else
4365         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4366         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4367         eval DEP${1}FLAGS=\$_flags
4368     fi
4369 }
4370
4371 probe_cc cc "$cc" "true"
4372 cflags_filter=$_flags_filter
4373 cflags_speed=$_cflags_speed
4374 cflags_size=$_cflags_size
4375 cflags_noopt=$_cflags_noopt
4376 add_cflags $_flags $_cflags
4377 cc_ldflags=$_ldflags
4378 set_ccvars CC
4379 set_ccvars CXX
4380
4381 probe_cc hostcc "$host_cc"
4382 host_cflags_filter=$_flags_filter
4383 host_cflags_speed=$_cflags_speed
4384 add_host_cflags  $_flags $_cflags
4385 set_ccvars HOSTCC
4386
4387 test -n "$cc_type" && enable $cc_type ||
4388     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4389
4390 : ${as_default:=$cc}
4391 : ${objcc_default:=$cc}
4392 : ${dep_cc_default:=$cc}
4393 : ${ld_default:=$cc}
4394 : ${host_ld_default:=$host_cc}
4395 set_default ar as objcc dep_cc ld ln_s host_ld windres
4396
4397 probe_cc as "$as"
4398 asflags_filter=$_flags_filter
4399 add_asflags $_flags $_cflags
4400 set_ccvars AS
4401
4402 probe_cc objcc "$objcc"
4403 objcflags_filter=$_flags_filter
4404 add_objcflags $_flags $_cflags
4405 set_ccvars OBJC
4406
4407 probe_cc ld "$ld"
4408 ldflags_filter=$_flags_filter
4409 add_ldflags $_flags $_ldflags
4410 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4411 LD_O=${_ld_o-$LD_O}
4412 LD_LIB=${_ld_lib-$LD_LIB}
4413 LD_PATH=${_ld_path-$LD_PATH}
4414
4415 probe_cc hostld "$host_ld"
4416 host_ldflags_filter=$_flags_filter
4417 add_host_ldflags $_flags $_ldflags
4418 HOSTLD_O=${_ld_o-$HOSTLD_O}
4419
4420 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4421     probe_cc depcc "$dep_cc"
4422     CCDEP=${_DEPCMD:-$DEPCMD}
4423     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4424     DEPCCFLAGS=$_flags
4425 fi
4426
4427 if $ar 2>&1 | grep -q Microsoft; then
4428     arflags="-nologo"
4429     ar_o='-out:$@'
4430 elif $ar 2>&1 | grep -q "\[D\] "; then
4431     arflags="rcD"
4432     ar_o='$@'
4433 else
4434     arflags="rc"
4435     ar_o='$@'
4436 fi
4437
4438 add_cflags $extra_cflags
4439 add_cxxflags $extra_cxxflags
4440 add_objcflags $extra_objcflags
4441 add_asflags $extra_cflags
4442
4443 if test -n "$sysroot"; then
4444     case "$cc_type" in
4445         gcc|llvm_gcc|clang)
4446             add_cppflags --sysroot="$sysroot"
4447             add_ldflags --sysroot="$sysroot"
4448         ;;
4449     esac
4450 fi
4451
4452 if test "$cpu" = host; then
4453     enabled cross_compile &&
4454         die "--cpu=host makes no sense when cross-compiling."
4455
4456     case "$cc_type" in
4457         gcc|llvm_gcc)
4458             check_native(){
4459                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4460                 sed -n "/cc1.*$1=/{
4461                             s/.*$1=\\([^ ]*\\).*/\\1/
4462                             p
4463                             q
4464                         }" $TMPE
4465             }
4466             cpu=$(check_native -march || check_native -mcpu)
4467         ;;
4468         clang)
4469             check_native(){
4470                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4471                 sed -n "/cc1.*-target-cpu /{
4472                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4473                             p
4474                             q
4475                         }" $TMPE
4476             }
4477             cpu=$(check_native -march)
4478         ;;
4479     esac
4480
4481     test "${cpu:-host}" = host &&
4482         die "--cpu=host not supported with compiler $cc"
4483 fi
4484
4485 # Deal with common $arch aliases
4486 case "$arch" in
4487     aarch64|arm64)
4488         arch="aarch64"
4489     ;;
4490     arm*|iPad*|iPhone*)
4491         arch="arm"
4492     ;;
4493     mips*|IP*)
4494         case "$arch" in
4495         *el)
4496             add_cppflags -EL
4497             add_ldflags -EL
4498         ;;
4499         *eb)
4500             add_cppflags -EB
4501             add_ldflags -EB
4502         ;;
4503         esac
4504         arch="mips"
4505     ;;
4506     parisc*|hppa*)
4507         arch="parisc"
4508     ;;
4509     "Power Macintosh"|ppc*|powerpc*)
4510         arch="ppc"
4511     ;;
4512     s390|s390x)
4513         arch="s390"
4514     ;;
4515     sh4|sh)
4516         arch="sh4"
4517     ;;
4518     sun4*|sparc*)
4519         arch="sparc"
4520     ;;
4521     tilegx|tile-gx)
4522         arch="tilegx"
4523     ;;
4524     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4525         arch="x86"
4526     ;;
4527 esac
4528
4529 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4530 enable $arch
4531
4532 # Add processor-specific flags
4533 if enabled aarch64; then
4534
4535     case $cpu in
4536         armv*)
4537             cpuflags="-march=$cpu"
4538         ;;
4539         *)
4540             cpuflags="-mcpu=$cpu"
4541         ;;
4542     esac
4543
4544 elif enabled alpha; then
4545
4546     cpuflags="-mcpu=$cpu"
4547
4548 elif enabled arm; then
4549
4550     check_arm_arch() {
4551         test_cpp_condition stddef.h \
4552             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4553             $cpuflags
4554     }
4555
4556     probe_arm_arch() {
4557         if   check_arm_arch 4;        then echo armv4
4558         elif check_arm_arch 4T;       then echo armv4t
4559         elif check_arm_arch 5;        then echo armv5
4560         elif check_arm_arch 5E;       then echo armv5e
4561         elif check_arm_arch 5T;       then echo armv5t
4562         elif check_arm_arch 5TE;      then echo armv5te
4563         elif check_arm_arch 5TEJ;     then echo armv5te
4564         elif check_arm_arch 6;        then echo armv6
4565         elif check_arm_arch 6J;       then echo armv6j
4566         elif check_arm_arch 6K;       then echo armv6k
4567         elif check_arm_arch 6Z;       then echo armv6z
4568         elif check_arm_arch 6KZ;      then echo armv6zk
4569         elif check_arm_arch 6ZK;      then echo armv6zk
4570         elif check_arm_arch 6T2;      then echo armv6t2
4571         elif check_arm_arch 7;        then echo armv7
4572         elif check_arm_arch 7A  7_A;  then echo armv7-a
4573         elif check_arm_arch 7S;       then echo armv7-a
4574         elif check_arm_arch 7R  7_R;  then echo armv7-r
4575         elif check_arm_arch 7M  7_M;  then echo armv7-m
4576         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4577         elif check_arm_arch 8A  8_A;  then echo armv8-a
4578         fi
4579     }
4580
4581     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4582
4583     case $cpu in
4584         armv*)
4585             cpuflags="-march=$cpu"
4586             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4587         ;;
4588         *)
4589             cpuflags="-mcpu=$cpu"
4590             case $cpu in
4591                 cortex-a*)                               subarch=armv7a  ;;
4592                 cortex-r*)                               subarch=armv7r  ;;
4593                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4594                 arm11*)                                  subarch=armv6   ;;
4595                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4596                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4597                 *)                             subarch=$(probe_arm_arch) ;;
4598             esac
4599         ;;
4600     esac
4601
4602     case "$subarch" in
4603         armv5t*)    enable fast_clz                ;;
4604         armv[6-8]*)
4605             enable fast_clz
4606             disabled fast_unaligned || enable fast_unaligned
4607             ;;
4608     esac
4609
4610 elif enabled avr32; then
4611
4612     case $cpu in
4613         ap7[02]0[0-2])
4614             subarch="avr32_ap"
4615             cpuflags="-mpart=$cpu"
4616         ;;
4617         ap)
4618             subarch="avr32_ap"
4619             cpuflags="-march=$cpu"
4620         ;;
4621         uc3[ab]*)
4622             subarch="avr32_uc"
4623             cpuflags="-mcpu=$cpu"
4624         ;;
4625         uc)
4626             subarch="avr32_uc"
4627             cpuflags="-march=$cpu"
4628         ;;
4629     esac
4630
4631 elif enabled bfin; then
4632
4633     cpuflags="-mcpu=$cpu"
4634
4635 elif enabled mips; then
4636
4637     cpuflags="-march=$cpu"
4638
4639     if [ "$cpu" != "generic" ]; then
4640         disable mips32r2
4641         disable mips32r5
4642         disable mips64r2
4643         disable mips32r6
4644         disable mips64r6
4645         disable loongson2
4646         disable loongson3
4647
4648         case $cpu in
4649             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4650                 enable mips32r2
4651                 disable msa
4652             ;;
4653             p5600|i6400|p6600)
4654                 disable mipsdsp
4655                 disable mipsdspr2
4656             ;;
4657             loongson*)
4658                 enable loongson2
4659                 enable loongson3
4660                 enable local_aligned
4661                 enable simd_align_16
4662                 enable fast_64bit
4663                 enable fast_clz
4664                 enable fast_cmov
4665                 enable fast_unaligned
4666                 disable aligned_stack
4667                 disable mipsfpu
4668                 disable mipsdsp
4669                 disable mipsdspr2
4670                 case $cpu in
4671                     loongson3*)
4672                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4673                     ;;
4674                     loongson2e)
4675                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4676                     ;;
4677                     loongson2f)
4678                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4679                     ;;
4680                 esac
4681             ;;
4682             *)
4683                 # Unknown CPU. Disable everything.
4684                 warn "unknown CPU. Disabling all MIPS optimizations."
4685                 disable mipsfpu
4686                 disable mipsdsp
4687                 disable mipsdspr2
4688                 disable msa
4689                 disable mmi
4690             ;;
4691         esac
4692
4693         case $cpu in
4694             24kc)
4695                 disable mipsfpu
4696                 disable mipsdsp
4697                 disable mipsdspr2
4698             ;;
4699             24kf*)
4700                 disable mipsdsp
4701                 disable mipsdspr2
4702             ;;
4703             24kec|34kc|1004kc)
4704                 disable mipsfpu
4705                 disable mipsdspr2
4706             ;;
4707             24kef*|34kf*|1004kf*)
4708                 disable mipsdspr2
4709             ;;
4710             74kc)
4711                 disable mipsfpu
4712             ;;
4713             p5600)
4714                 enable mips32r5
4715                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4716             ;;
4717             i6400)
4718                 enable mips64r6
4719                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4720             ;;
4721             p6600)
4722                 enable mips64r6
4723                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4724             ;;
4725         esac
4726     else
4727         # We do not disable anything. Is up to the user to disable the unwanted features.
4728         warn 'generic cpu selected'
4729     fi
4730
4731 elif enabled ppc; then
4732
4733     disable ldbrx
4734
4735     case $(tolower $cpu) in
4736         601|ppc601|powerpc601)
4737             cpuflags="-mcpu=601"
4738             disable altivec
4739         ;;
4740         603*|ppc603*|powerpc603*)
4741             cpuflags="-mcpu=603"
4742             disable altivec
4743         ;;
4744         604*|ppc604*|powerpc604*)
4745             cpuflags="-mcpu=604"
4746             disable altivec
4747         ;;
4748         g3|75*|ppc75*|powerpc75*)
4749             cpuflags="-mcpu=750"
4750             disable altivec
4751         ;;
4752         g4|745*|ppc745*|powerpc745*)
4753             cpuflags="-mcpu=7450"
4754             disable vsx
4755         ;;
4756         74*|ppc74*|powerpc74*)
4757             cpuflags="-mcpu=7400"
4758             disable vsx
4759         ;;
4760         g5|970|ppc970|powerpc970)
4761             cpuflags="-mcpu=970"
4762             disable vsx
4763         ;;
4764         power[3-6]*)
4765             cpuflags="-mcpu=$cpu"
4766             disable vsx
4767         ;;
4768         power[7-8]*)
4769             cpuflags="-mcpu=$cpu"
4770         ;;
4771         cell)
4772             cpuflags="-mcpu=cell"
4773             enable ldbrx
4774             disable vsx
4775         ;;
4776         e500mc)
4777             cpuflags="-mcpu=e500mc"
4778             disable altivec
4779         ;;
4780         e500v2)
4781             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4782             disable altivec
4783             disable dcbzl
4784         ;;
4785         e500)
4786             cpuflags="-mcpu=8540 -mhard-float"
4787             disable altivec
4788             disable dcbzl
4789         ;;
4790     esac
4791
4792 elif enabled sparc; then
4793
4794     case $cpu in
4795         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4796             cpuflags="-mcpu=$cpu"
4797         ;;
4798         ultrasparc*|niagara[234])
4799             cpuflags="-mcpu=$cpu"
4800         ;;
4801     esac
4802
4803 elif enabled x86; then
4804
4805     case $cpu in
4806         i[345]86|pentium)
4807             cpuflags="-march=$cpu"
4808             disable i686
4809             disable mmx
4810         ;;
4811         # targets that do NOT support nopl and conditional mov (cmov)
4812         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4813             cpuflags="-march=$cpu"
4814             disable i686
4815         ;;
4816         # targets that do support nopl and conditional mov (cmov)
4817         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4818         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4819         |amdfam10|barcelona|b[dt]ver*|znver*)
4820             cpuflags="-march=$cpu"
4821             enable i686
4822             enable fast_cmov
4823         ;;
4824         # targets that do support conditional mov but on which it's slow
4825         pentium4|pentium4m|prescott|nocona)
4826             cpuflags="-march=$cpu"
4827             enable i686
4828             disable fast_cmov
4829         ;;
4830     esac
4831
4832 fi
4833
4834 if [ "$cpu" != generic ]; then
4835     add_cflags  $cpuflags
4836     add_asflags $cpuflags
4837     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4838 fi
4839
4840 # compiler sanity check
4841 test_exec <<EOF
4842 int main(void){ return 0; }
4843 EOF
4844 if test "$?" != 0; then
4845     echo "$cc is unable to create an executable file."
4846     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4847         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4848         echo "Only do this if you know what cross compiling means."
4849     fi
4850     die "C compiler test failed."
4851 fi
4852
4853 add_cppflags -D_ISOC99_SOURCE
4854 add_cxxflags -D__STDC_CONSTANT_MACROS
4855 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4856
4857 # some compilers silently accept -std=c11, so we also need to check that the
4858 # version macro is defined properly
4859 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4860     add_cflags -std=c11 ||
4861     check_cflags -std=c99
4862
4863 check_cppflags -D_FILE_OFFSET_BITS=64
4864 check_cppflags -D_LARGEFILE_SOURCE
4865
4866 add_host_cppflags -D_ISOC99_SOURCE
4867 check_host_cflags -std=c99
4868 check_host_cflags -Wall
4869 check_host_cflags $host_cflags_speed
4870
4871 check_64bit(){
4872     arch32=$1
4873     arch64=$2
4874     expr=${3:-'sizeof(void *) > 4'}
4875     test_code cc "" "int test[2*($expr) - 1]" &&
4876         subarch=$arch64 || subarch=$arch32
4877     enable $subarch
4878 }
4879
4880 case "$arch" in
4881     aarch64|alpha|ia64)
4882         enabled shared && enable_weak pic
4883     ;;
4884     mips)
4885         check_64bit mips mips64 '_MIPS_SIM > 1'
4886         enabled shared && enable_weak pic
4887     ;;
4888     parisc)
4889         check_64bit parisc parisc64
4890         enabled shared && enable_weak pic
4891     ;;
4892     ppc)
4893         check_64bit ppc ppc64
4894         enabled shared && enable_weak pic
4895     ;;
4896     s390)
4897         check_64bit s390 s390x
4898         enabled shared && enable_weak pic
4899     ;;
4900     sparc)
4901         check_64bit sparc sparc64
4902         enabled shared && enable_weak pic
4903     ;;
4904     x86)
4905         check_64bit x86_32 x86_64
4906         # Treat x32 as x64 for now. Note it also needs pic if shared
4907         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
4908             subarch=x86_64 && enable x86_64 && disable x86_32
4909         if enabled x86_64; then
4910             enabled shared && enable_weak pic
4911             objformat=elf64
4912         fi
4913     ;;
4914 esac
4915
4916 # OS specific
4917 case $target_os in
4918     aix)
4919         SHFLAGS=-shared
4920         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4921         enabled shared && add_ldflags -Wl,-brtl
4922         arflags='-Xany -r -c'
4923         ;;
4924     android)
4925         disable symver
4926         enable section_data_rel_ro
4927         SLIB_INSTALL_NAME='$(SLIBNAME)'
4928         SLIB_INSTALL_LINKS=
4929         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4930         ;;
4931     haiku)
4932         prefix_default="/boot/common"
4933         network_extralibs="-lnetwork"
4934         host_extralibs=
4935         ;;
4936     sunos)
4937         SHFLAGS='-shared -Wl,-h,$$(@F)'
4938         enabled x86 && append SHFLAGS -mimpure-text
4939         network_extralibs="-lsocket -lnsl"
4940         add_cppflags -D__EXTENSIONS__
4941         # When using suncc to build, the Solaris linker will mark
4942         # an executable with each instruction set encountered by
4943         # the Solaris assembler.  As our libraries contain their own
4944         # guards for processor-specific code, instead suppress
4945         # generation of the HWCAPS ELF section on Solaris x86 only.
4946         enabled_all suncc x86 &&
4947             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4948             add_ldflags -Wl,-M,mapfile