Merge commit '41df62fd674bd0c67f7b6952381d235a393245d6'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
189
190 External library support:
191
192   Using any of the following switches will allow FFmpeg to link to the
193   corresponding external library. All the components depending on that library
194   will become enabled, if all their other dependencies are met and they are not
195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
196   libwavpack and allow the libwavpack encoder to be built, unless it is
197   specifically disabled with --disable-encoder=libwavpack.
198
199   Note that only the system libraries are auto-detected. All the other external
200   libraries must be explicitly enabled.
201
202   Also note that the following help text describes the purpose of the libraries
203   themselves, not all their features will necessarily be usable by FFmpeg.
204
205   --disable-alsa           disable ALSA support [autodetect]
206   --disable-appkit         disable Apple AppKit framework [autodetect]
207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
208   --enable-avisynth        enable reading of AviSynth script files [no]
209   --disable-bzlib          disable bzlib [autodetect]
210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
212   --enable-frei0r          enable frei0r video filtering [no]
213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
214                            if openssl, librtmp or gmp is not used [no]
215   --enable-gmp             enable gmp, needed for rtmp(t)e support
216                            if openssl or librtmp is not used [no]
217   --enable-gnutls          enable gnutls, needed for https support
218                            if openssl is not used [no]
219   --disable-iconv          disable iconv [autodetect]
220   --enable-jni             enable JNI support [no]
221   --enable-ladspa          enable LADSPA audio filtering [no]
222   --enable-libass          enable libass subtitles rendering,
223                            needed for subtitles and ass filter [no]
224   --enable-libbluray       enable BluRay reading using libbluray [no]
225   --enable-libbs2b         enable bs2b DSP library [no]
226   --enable-libcaca         enable textual display using libcaca [no]
227   --enable-libcelt         enable CELT decoding via libcelt [no]
228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
230                            and libraw1394 [no]
231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
236   --enable-libgme          enable Game Music Emu via libgme [no]
237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
240   --enable-libjack         enable JACK audio sound server [no]
241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
242   --enable-libmodplug      enable ModPlug via libmodplug [no]
243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
246   --enable-libopencv       enable video filtering via libopencv [no]
247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
250   --enable-libopus         enable Opus de/encoding via libopus [no]
251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
252   --enable-librsvg         enable SVG rasterization via librsvg [no]
253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
258   --enable-libsoxr         enable Include libsoxr resampling [no]
259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
260   --enable-libssh          enable SFTP protocol via libssh [no]
261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
262   --enable-libtheora       enable Theora encoding via libtheora [no]
263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
265   --enable-libvidstab      enable video stabilization using vid.stab [no]
266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
269                            native implementation exists [no]
270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
272   --enable-libwebp         enable WebP encoding via libwebp [no]
273   --enable-libx264         enable H.264 encoding via x264 [no]
274   --enable-libx265         enable HEVC encoding via x265 [no]
275   --enable-libxavs         enable AVS encoding via xavs [no]
276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
280   --enable-libxvid         enable Xvid encoding via xvidcore,
281                            native MPEG-4/Xvid encoder exists [no]
282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
284   --enable-libzmq          enable message passing via libzmq [no]
285   --enable-libzvbi         enable teletext support via libzvbi [no]
286   --disable-lzma           disable lzma [autodetect]
287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
289   --enable-mediacodec      enable Android MediaCodec support [no]
290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
291   --enable-openal          enable OpenAL 1.1 capture support [no]
292   --enable-opencl          enable OpenCL code
293   --enable-opengl          enable OpenGL rendering [no]
294   --enable-openssl         enable openssl, needed for https support
295                            if gnutls is not used [no]
296   --disable-sndio          disable sndio support [autodetect]
297   --disable-schannel       disable SChannel SSP, needed for TLS support on
298                            Windows if openssl and gnutls are not used [autodetect]
299   --disable-sdl2           disable sdl2 [autodetect]
300   --disable-securetransport disable Secure Transport, needed for TLS support
301                            on OSX if openssl and gnutls are not used [autodetect]
302   --disable-xlib           disable xlib [autodetect]
303   --disable-zlib           disable zlib [autodetect]
304
305   The following libraries provide various hardware acceleration features:
306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
312   --enable-libdrm          enable DRM code (Linux) [no]
313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
316   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
318   --enable-omx             enable OpenMAX IL code [no]
319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
324
325 Toolchain options:
326   --arch=ARCH              select architecture [$arch]
327   --cpu=CPU                select the minimum required CPU (affects
328                            instruction selection, may crash on older CPUs)
329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
330   --progs-suffix=SUFFIX    program name suffix []
331   --enable-cross-compile   assume a cross-compiler is used
332   --sysroot=PATH           root of cross-build tree
333   --sysinclude=PATH        location of cross-build system headers
334   --target-os=OS           compiler targets OS [$target_os]
335   --target-exec=CMD        command to run executables on target
336   --target-path=DIR        path to view of build directory on target
337   --target-samples=DIR     path to samples directory on target
338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
339   --toolchain=NAME         set tool defaults according to NAME
340   --nm=NM                  use nm tool NM [$nm_default]
341   --ar=AR                  use archive tool AR [$ar_default]
342   --as=AS                  use assembler AS [$as_default]
343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
344   --strip=STRIP            use strip tool STRIP [$strip_default]
345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
347   --cc=CC                  use C compiler CC [$cc_default]
348   --cxx=CXX                use C compiler CXX [$cxx_default]
349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
352   --ld=LD                  use linker LD [$ld_default]
353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
357   --host-cc=HOSTCC         use host C compiler HOSTCC
358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
360   --host-ld=HOSTLD         use host linker HOSTLD
361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
362   --host-libs=HLIBS        use libs HLIBS when linking for host
363   --host-os=OS             compiler host OS [$target_os]
364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
371   --extra-version=STRING   version string suffix []
372   --optflags=OPTFLAGS      override optimization-related compiler flags
373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
374   --build-suffix=SUFFIX    library name suffix []
375   --enable-pic             build position-independent code
376   --enable-thumb           compile for Thumb instruction set
377   --enable-lto             use link-time optimization
378   --env="ENV=override"     override the environment variables
379
380 Advanced options (experts only):
381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
382   --custom-allocator=NAME  use a supported custom allocator
383   --disable-symver         disable symbol versioning
384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
385   --disable-safe-bitstream-reader
386                            disable buffer boundary checking in bitreaders
387                            (faster, but may crash)
388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
389
390 Optimization options (experts only):
391   --disable-asm            disable all assembly optimizations
392   --disable-altivec        disable AltiVec optimizations
393   --disable-vsx            disable VSX optimizations
394   --disable-power8         disable POWER8 optimizations
395   --disable-amd3dnow       disable 3DNow! optimizations
396   --disable-amd3dnowext    disable 3DNow! extended optimizations
397   --disable-mmx            disable MMX optimizations
398   --disable-mmxext         disable MMXEXT optimizations
399   --disable-sse            disable SSE optimizations
400   --disable-sse2           disable SSE2 optimizations
401   --disable-sse3           disable SSE3 optimizations
402   --disable-ssse3          disable SSSE3 optimizations
403   --disable-sse4           disable SSE4 optimizations
404   --disable-sse42          disable SSE4.2 optimizations
405   --disable-avx            disable AVX optimizations
406   --disable-xop            disable XOP optimizations
407   --disable-fma3           disable FMA3 optimizations
408   --disable-fma4           disable FMA4 optimizations
409   --disable-avx2           disable AVX2 optimizations
410   --disable-aesni          disable AESNI optimizations
411   --disable-armv5te        disable armv5te optimizations
412   --disable-armv6          disable armv6 optimizations
413   --disable-armv6t2        disable armv6t2 optimizations
414   --disable-vfp            disable VFP optimizations
415   --disable-neon           disable NEON optimizations
416   --disable-inline-asm     disable use of inline assembly
417   --disable-x86asm         disable use of standalone x86 assembly
418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
420   --disable-msa            disable MSA optimizations
421   --disable-mipsfpu        disable floating point MIPS optimizations
422   --disable-mmi            disable Loongson SIMD optimizations
423   --disable-fast-unaligned consider unaligned accesses slow
424
425 Developer options (useful when working on FFmpeg itself):
426   --disable-debug          disable debugging symbols
427   --enable-debug=LEVEL     set the debug level [$debuglevel]
428   --disable-optimizations  disable compiler optimizations
429   --enable-extra-warnings  enable more compiler warnings
430   --disable-stripping      disable stripping of executables and shared libraries
431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
432                            2 causes a slowdown at runtime.
433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
435                            leaks and errors, using the specified valgrind binary.
436                            Cannot be combined with --target-exec
437   --enable-ftrapv          Trap arithmetic overflows
438   --samples=PATH           location of test samples for FATE, if not set use
439                            \$FATE_SAMPLES at make invocation time.
440   --enable-neon-clobber-test check NEON registers for clobbering (should be
441                            used only for debugging purposes)
442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
443                            should be used only for debugging purposes)
444   --enable-random          randomly enable/disable components
445   --disable-random
446   --enable-random=LIST     randomly enable/disable specific components or
447   --disable-random=LIST    component groups. LIST is a comma-separated list
448                            of NAME[:PROB] entries where NAME is a component
449                            (group) and PROB the probability associated with
450                            NAME (default 0.5).
451   --random-seed=VALUE      seed value for --enable/disable-random
452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
453                            (only applies to --disable-optimizations builds)
454   --enable-osfuzz          Enable building fuzzer tool
455   --libfuzzer=PATH         path to libfuzzer
456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
457                            in the name) of tests whose result is ignored
458   --enable-linux-perf      enable Linux Performance Monitor API
459
460 NOTE: Object files are built at the place where configure is launched.
461 EOF
462   exit 0
463 }
464
465 quotes='""'
466 if test -t 1 && which tput >/dev/null 2>&1; then
467     ncolors=$(tput colors)
468     if test -n "$ncolors" && test $ncolors -ge 8; then
469         bold_color=$(tput bold)
470         warn_color=$(tput setaf 3)
471         error_color=$(tput setaf 1)
472         reset_color=$(tput sgr0)
473     fi
474     # 72 used instead of 80 since that's the default of pr
475     ncols=$(tput cols)
476 fi
477 : ${ncols:=72}
478
479 log(){
480     echo "$@" >> $logfile
481 }
482
483 log_file(){
484     log BEGIN $1
485     pr -n -t $1 >> $logfile
486     log END $1
487 }
488
489 warn(){
490     log "WARNING: $*"
491     WARNINGS="${WARNINGS}WARNING: $*\n"
492 }
493
494 die(){
495     log "$@"
496     echo "$error_color$bold_color$@$reset_color"
497     cat <<EOF
498
499 If you think configure made a mistake, make sure you are using the latest
500 version from Git.  If the latest version fails, report the problem to the
501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
502 EOF
503     if disabled logging; then
504         cat <<EOF
505 Rerun configure with logging enabled (do not use --disable-logging), and
506 include the log this produces with your report.
507 EOF
508     else
509         cat <<EOF
510 Include the log file "$logfile" produced by configure as this will help
511 solve the problem.
512 EOF
513     fi
514     exit 1
515 }
516
517 # Avoid locale weirdness, besides we really just want to translate ASCII.
518 toupper(){
519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
520 }
521
522 tolower(){
523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
524 }
525
526 c_escape(){
527     echo "$*" | sed 's/["\\]/\\\0/g'
528 }
529
530 sh_quote(){
531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
533     echo "$v"
534 }
535
536 cleanws(){
537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
538 }
539
540 filter(){
541     pat=$1
542     shift
543     for v; do
544         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
545     done
546 }
547
548 filter_out(){
549     pat=$1
550     shift
551     for v; do
552         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
553     done
554 }
555
556 map(){
557     m=$1
558     shift
559     for v; do eval $m; done
560 }
561
562 add_suffix(){
563     suffix=$1
564     shift
565     for v; do echo ${v}${suffix}; done
566 }
567
568 set_all(){
569     value=$1
570     shift
571     for var in $*; do
572         eval $var=$value
573     done
574 }
575
576 set_weak(){
577     value=$1
578     shift
579     for var; do
580         eval : \${$var:=$value}
581     done
582 }
583
584 sanitize_var_name(){
585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
586 }
587
588 set_sanitized(){
589     var=$1
590     shift
591     eval $(sanitize_var_name "$var")='$*'
592 }
593
594 get_sanitized(){
595     eval echo \$$(sanitize_var_name "$1")
596 }
597
598 pushvar(){
599     for pvar in $*; do
600         eval level=\${${pvar}_level:=0}
601         eval ${pvar}_${level}="\$$pvar"
602         eval ${pvar}_level=$(($level+1))
603     done
604 }
605
606 popvar(){
607     for pvar in $*; do
608         eval level=\${${pvar}_level:-0}
609         test $level = 0 && continue
610         eval level=$(($level-1))
611         eval $pvar="\${${pvar}_${level}}"
612         eval ${pvar}_level=$level
613         eval unset ${pvar}_${level}
614     done
615 }
616
617 request(){
618     for var in $*; do
619         eval ${var}_requested=yes
620         eval $var=
621     done
622 }
623
624 enable(){
625     set_all yes $*
626 }
627
628 disable(){
629     set_all no $*
630 }
631
632 enable_weak(){
633     set_weak yes $*
634 }
635
636 disable_weak(){
637     set_weak no $*
638 }
639
640 enable_sanitized(){
641     for var; do
642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
643     done
644 }
645
646 disable_sanitized(){
647     for var; do
648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
649     done
650 }
651
652 do_enable_deep(){
653     for var; do
654         enabled $var && continue
655         eval sel="\$${var}_select"
656         eval sgs="\$${var}_suggest"
657         pushvar var sgs
658         enable_deep $sel
659         popvar sgs
660         enable_deep_weak $sgs
661         popvar var
662     done
663 }
664
665 enable_deep(){
666     do_enable_deep $*
667     enable $*
668 }
669
670 enable_deep_weak(){
671     for var; do
672         disabled $var && continue
673         pushvar var
674         do_enable_deep $var
675         popvar var
676         enable_weak $var
677     done
678 }
679
680 requested(){
681     test "${1#!}" = "$1" && op='=' || op=!=
682     eval test "x\$${1#!}_requested" $op "xyes"
683 }
684
685 enabled(){
686     test "${1#!}" = "$1" && op='=' || op=!=
687     eval test "x\$${1#!}" $op "xyes"
688 }
689
690 disabled(){
691     test "${1#!}" = "$1" && op='=' || op=!=
692     eval test "x\$${1#!}" $op "xno"
693 }
694
695 enabled_all(){
696     for opt; do
697         enabled $opt || return 1
698     done
699 }
700
701 disabled_all(){
702     for opt; do
703         disabled $opt || return 1
704     done
705 }
706
707 enabled_any(){
708     for opt; do
709         enabled $opt && return 0
710     done
711 }
712
713 disabled_any(){
714     for opt; do
715         disabled $opt && return 0
716     done
717     return 1
718 }
719
720 set_default(){
721     for opt; do
722         eval : \${$opt:=\$${opt}_default}
723     done
724 }
725
726 is_in(){
727     value=$1
728     shift
729     for var in $*; do
730         [ $var = $value ] && return 0
731     done
732     return 1
733 }
734
735 check_deps(){
736     for cfg; do
737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
738         disabled ${cfg}_checking && continue
739         enable ${cfg}_checking
740
741         eval dep_all="\$${cfg}_deps"
742         eval dep_any="\$${cfg}_deps_any"
743         eval dep_con="\$${cfg}_conflict"
744         eval dep_sel="\$${cfg}_select"
745         eval dep_sgs="\$${cfg}_suggest"
746         eval dep_ifa="\$${cfg}_if"
747         eval dep_ifn="\$${cfg}_if_any"
748
749         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
752
753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
757         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
759
760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
761
762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
763             # filter out library deps, these do not belong in extralibs
764             is_in $dep $LIBRARY_LIST && continue
765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
766         done
767
768         disable ${cfg}_checking
769     done
770 }
771
772 print_config(){
773     pfx=$1
774     files=$2
775     shift 2
776     map 'eval echo "$v \${$v:-no}"' "$@" |
777     awk "BEGIN { split(\"$files\", files) }
778         {
779             c = \"$pfx\" toupper(\$1);
780             v = \$2;
781             sub(/yes/, 1, v);
782             sub(/no/,  0, v);
783             for (f in files) {
784                 file = files[f];
785                 if (file ~ /\\.h\$/) {
786                     printf(\"#define %s %d\\n\", c, v) >>file;
787                 } else if (file ~ /\\.asm\$/) {
788                     printf(\"%%define %s %d\\n\", c, v) >>file;
789                 } else if (file ~ /\\.mak\$/) {
790                     n = -v ? \"\" : \"!\";
791                     printf(\"%s%s=yes\\n\", n, c) >>file;
792                 } else if (file ~ /\\.texi\$/) {
793                     pre = -v ? \"\" : \"@c \";
794                     yesno = \$2;
795                     c2 = tolower(c);
796                     gsub(/_/, \"-\", c2);
797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
798                 }
799             }
800         }"
801 }
802
803 print_enabled(){
804     suf=$1
805     shift
806     for v; do
807         enabled $v && printf "%s\n" ${v%$suf}
808     done
809 }
810
811 append(){
812     var=$1
813     shift
814     eval "$var=\"\$$var $*\""
815 }
816
817 prepend(){
818     var=$1
819     shift
820     eval "$var=\"$* \$$var\""
821 }
822
823 unique(){
824     var=$1
825     uniq_list=""
826     for tok in $(eval echo \$$var); do
827         uniq_list="$(filter_out $tok $uniq_list) $tok"
828     done
829     eval "$var=\"${uniq_list}\""
830 }
831
832 resolve(){
833     var=$1
834     tmpvar=
835     for entry in $(eval echo \$$var); do
836         tmpvar="$tmpvar $(eval echo \$${entry})"
837     done
838     eval "$var=\"${tmpvar}\""
839 }
840
841 add_cppflags(){
842     append CPPFLAGS "$@"
843 }
844
845 add_cflags(){
846     append CFLAGS $($cflags_filter "$@")
847 }
848
849 add_cflags_headers(){
850     append CFLAGS_HEADERS $($cflags_filter "$@")
851 }
852
853 add_cxxflags(){
854     append CXXFLAGS $($cflags_filter "$@")
855 }
856
857 add_asflags(){
858     append ASFLAGS $($asflags_filter "$@")
859 }
860
861 add_objcflags(){
862     append OBJCFLAGS $($objcflags_filter "$@")
863 }
864
865 add_ldflags(){
866     append LDFLAGS $($ldflags_filter "$@")
867 }
868
869 add_ldexeflags(){
870     append LDEXEFLAGS $($ldflags_filter "$@")
871 }
872
873 add_ldsoflags(){
874     append LDSOFLAGS $($ldflags_filter "$@")
875 }
876
877 add_stripflags(){
878     append ASMSTRIPFLAGS "$@"
879 }
880
881 add_extralibs(){
882     prepend extralibs $($ldflags_filter "$@")
883 }
884
885 add_host_cppflags(){
886     append host_cppflags "$@"
887 }
888
889 add_host_cflags(){
890     append host_cflags $($host_cflags_filter "$@")
891 }
892
893 add_host_ldflags(){
894     append host_ldflags $($host_ldflags_filter "$@")
895 }
896
897 add_compat(){
898     append compat_objs $1
899     shift
900     map 'add_cppflags -D$v' "$@"
901 }
902
903 check_cmd(){
904     log "$@"
905     "$@" >> $logfile 2>&1
906 }
907
908 check_stat(){
909     log check_stat "$@"
910     stat "$1" >> $logfile 2>&1
911 }
912
913 cc_o(){
914     eval printf '%s\\n' $CC_O
915 }
916
917 cc_e(){
918     eval printf '%s\\n' $CC_E
919 }
920
921 check_cc(){
922     log check_cc "$@"
923     cat > $TMPC
924     log_file $TMPC
925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
926 }
927
928 check_cxx(){
929     log check_cxx "$@"
930     cat > $TMPCPP
931     log_file $TMPCPP
932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
933 }
934
935 check_objcc(){
936     log check_objcc "$@"
937     cat > $TMPM
938     log_file $TMPM
939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
940 }
941
942 check_cpp(){
943     log check_cpp "$@"
944     cat > $TMPC
945     log_file $TMPC
946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
947 }
948
949 as_o(){
950     eval printf '%s\\n' $AS_O
951 }
952
953 check_as(){
954     log check_as "$@"
955     cat > $TMPS
956     log_file $TMPS
957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
958 }
959
960 check_inline_asm(){
961     log check_inline_asm "$@"
962     name="$1"
963     code="$2"
964     shift 2
965     disable $name
966     check_cc "$@" <<EOF && enable $name
967 void foo(void){ __asm__ volatile($code); }
968 EOF
969 }
970
971 check_inline_asm_flags(){
972     log check_inline_asm_flags "$@"
973     name="$1"
974     code="$2"
975     flags=''
976     shift 2
977     while [ "$1" != "" ]; do
978       append flags $1
979       shift
980     done;
981     disable $name
982     cat > $TMPC <<EOF
983 void foo(void){ __asm__ volatile($code); }
984 EOF
985     log_file $TMPC
986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
988 }
989
990 check_insn(){
991     log check_insn "$@"
992     check_inline_asm ${1}_inline "\"$2\""
993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
994 }
995
996 check_x86asm(){
997     log check_x86asm "$@"
998     echo "$1" > $TMPS
999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     headers=$1
1111     shift
1112     disable_sanitized $headers
1113     {
1114         for hdr in $headers; do
1115             print_include $hdr
1116         done
1117         echo "int x;"
1118     } | check_cpp "$@" && enable_sanitized $headers
1119 }
1120
1121 check_header_objcc(){
1122     log check_header_objcc "$@"
1123     rm -f -- "$TMPO"
1124     header=$1
1125     shift
1126     disable_sanitized $header
1127     {
1128        echo "#include <$header>"
1129        echo "int main(void) { return 0; }"
1130     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1131 }
1132
1133 check_apple_framework(){
1134     log check_apple_framework "$@"
1135     framework="$1"
1136     name="$(tolower $framework)"
1137     header="${framework}/${framework}.h"
1138     disable $name
1139     check_header_objcc $header &&
1140         enable $name && eval ${name}_extralibs='"-framework $framework"'
1141 }
1142
1143 check_func(){
1144     log check_func "$@"
1145     func=$1
1146     shift
1147     disable $func
1148     check_ld "cc" "$@" <<EOF && enable $func
1149 extern int $func();
1150 int main(void){ $func(); }
1151 EOF
1152 }
1153
1154 check_complexfunc(){
1155     log check_complexfunc "$@"
1156     func=$1
1157     narg=$2
1158     shift 2
1159     test $narg = 2 && args="f, g" || args="f * I"
1160     disable $func
1161     check_ld "cc" "$@" <<EOF && enable $func
1162 #include <complex.h>
1163 #include <math.h>
1164 float foo(complex float f, complex float g) { return $func($args); }
1165 int main(void){ return (int) foo; }
1166 EOF
1167 }
1168
1169 check_mathfunc(){
1170     log check_mathfunc "$@"
1171     func=$1
1172     narg=$2
1173     shift 2
1174     test $narg = 2 && args="f, g" || args="f"
1175     disable $func
1176     check_ld "cc" "$@" <<EOF && enable $func
1177 #include <math.h>
1178 float foo(float f, float g) { return $func($args); }
1179 int main(void){ return (int) foo; }
1180 EOF
1181 }
1182
1183 check_func_headers(){
1184     log check_func_headers "$@"
1185     headers=$1
1186     funcs=$2
1187     shift 2
1188     {
1189         for hdr in $headers; do
1190             print_include $hdr
1191         done
1192         echo "#include <stdint.h>"
1193         for func in $funcs; do
1194             echo "long check_$func(void) { return (long) $func; }"
1195         done
1196         echo "int main(void) { int ret = 0;"
1197         # LTO could optimize out the test functions without this
1198         for func in $funcs; do
1199             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1200         done
1201         echo "return ret; }"
1202     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1203 }
1204
1205 check_class_headers_cpp(){
1206     log check_class_headers_cpp "$@"
1207     headers=$1
1208     classes=$2
1209     shift 2
1210     {
1211         for hdr in $headers; do
1212             echo "#include <$hdr>"
1213         done
1214         echo "int main(void) { "
1215         i=1
1216         for class in $classes; do
1217             echo "$class obj$i;"
1218             i=$(expr $i + 1)
1219         done
1220         echo "return 0; }"
1221     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1222 }
1223
1224 check_cpp_condition(){
1225     log check_cpp_condition "$@"
1226     header=$1
1227     condition=$2
1228     shift 2
1229     check_cpp "$@" <<EOF
1230 #include <$header>
1231 #if !($condition)
1232 #error "unsatisfied condition: $condition"
1233 #endif
1234 EOF
1235 }
1236
1237 test_cflags_cc(){
1238     log test_cflags_cc "$@"
1239     flags=$1
1240     header=$2
1241     condition=$3
1242     shift 3
1243     set -- $($cflags_filter "$flags")
1244     check_cc "$@" <<EOF
1245 #include <$header>
1246 #if !($condition)
1247 #error "unsatisfied condition: $condition"
1248 #endif
1249 EOF
1250 }
1251
1252 check_lib(){
1253     log check_lib "$@"
1254     name="$1"
1255     headers="$2"
1256     funcs="$3"
1257     shift 3
1258     disable $name
1259     check_func_headers "$headers" "$funcs" "$@" &&
1260         enable $name && eval ${name}_extralibs="\$@"
1261 }
1262
1263 check_lib_cpp(){
1264     log check_lib_cpp "$@"
1265     name="$1"
1266     headers="$2"
1267     classes="$3"
1268     shift 3
1269     disable $name
1270     check_class_headers_cpp "$headers" "$classes" "$@" &&
1271         enable $name && eval ${name}_extralibs="\$@"
1272 }
1273
1274 test_pkg_config(){
1275     log test_pkg_config "$@"
1276     name="$1"
1277     pkg_version="$2"
1278     pkg="${2%% *}"
1279     headers="$3"
1280     funcs="$4"
1281     shift 4
1282     disable $name
1283     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1284     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1285     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1286     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1287         enable $name &&
1288         set_sanitized "${name}_cflags"    $pkg_cflags &&
1289         set_sanitized "${name}_extralibs" $pkg_libs
1290 }
1291
1292 check_pkg_config(){
1293     log check_pkg_config "$@"
1294     name="$1"
1295     test_pkg_config "$@" &&
1296         eval add_cflags \$${name}_cflags
1297 }
1298
1299 check_exec(){
1300     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1301 }
1302
1303 check_exec_crash(){
1304     log check_exec_crash "$@"
1305     code=$(cat)
1306
1307     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1308     # are safe but may not be available everywhere.  Thus we use
1309     # raise(SIGTERM) instead.  The check is run in a subshell so we
1310     # can redirect the "Terminated" message from the shell.  SIGBUS
1311     # is not defined by standard C so it is used conditionally.
1312
1313     (check_exec "$@") >> $logfile 2>&1 <<EOF
1314 #include <signal.h>
1315 static void sighandler(int sig){
1316     raise(SIGTERM);
1317 }
1318 int foo(void){
1319     $code
1320 }
1321 int (*func_ptr)(void) = foo;
1322 int main(void){
1323     signal(SIGILL, sighandler);
1324     signal(SIGFPE, sighandler);
1325     signal(SIGSEGV, sighandler);
1326 #ifdef SIGBUS
1327     signal(SIGBUS, sighandler);
1328 #endif
1329     return func_ptr();
1330 }
1331 EOF
1332 }
1333
1334 check_type(){
1335     log check_type "$@"
1336     headers=$1
1337     type=$2
1338     shift 2
1339     disable_sanitized "$type"
1340     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1341 }
1342
1343 check_struct(){
1344     log check_struct "$@"
1345     headers=$1
1346     struct=$2
1347     member=$3
1348     shift 3
1349     disable_sanitized "${struct}_${member}"
1350     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1351         enable_sanitized "${struct}_${member}"
1352 }
1353
1354 check_builtin(){
1355     log check_builtin "$@"
1356     name=$1
1357     headers=$2
1358     builtin=$3
1359     shift 3
1360     disable "$name"
1361     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1362 }
1363
1364 check_compile_assert(){
1365     log check_compile_assert "$@"
1366     name=$1
1367     headers=$2
1368     condition=$3
1369     shift 3
1370     disable "$name"
1371     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1372 }
1373
1374 require(){
1375     log require "$@"
1376     name_version="$1"
1377     name="${1%% *}"
1378     headers="$2"
1379     func="$3"
1380     shift 3
1381     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1382 }
1383
1384 require_cpp(){
1385     name="$1"
1386     headers="$2"
1387     classes="$3"
1388     shift 3
1389     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1390 }
1391
1392 require_header(){
1393     log require "$@"
1394     headers="$1"
1395     shift
1396     check_header "$headers" "$@" || die "ERROR: $headers not found"
1397 }
1398
1399 require_cpp_condition(){
1400     log require "$@"
1401     header="$1"
1402     condition="$2"
1403     shift 2
1404     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1405 }
1406
1407 require_pkg_config(){
1408     log require_pkg_config "$@"
1409     pkg_version="$2"
1410     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1411 }
1412
1413 hostcc_e(){
1414     eval printf '%s\\n' $HOSTCC_E
1415 }
1416
1417 hostcc_o(){
1418     eval printf '%s\\n' $HOSTCC_O
1419 }
1420
1421 check_host_cc(){
1422     log check_host_cc "$@"
1423     cat > $TMPC
1424     log_file $TMPC
1425     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1426 }
1427
1428 check_host_cpp(){
1429     log check_host_cpp "$@"
1430     cat > $TMPC
1431     log_file $TMPC
1432     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1433 }
1434
1435 check_host_cppflags(){
1436     log check_host_cppflags "$@"
1437     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1438 #include <stdlib.h>
1439 EOF
1440 }
1441
1442 check_host_cflags(){
1443     log check_host_cflags "$@"
1444     set -- $($host_cflags_filter "$@")
1445     check_host_cc "$@" <<EOF && append host_cflags "$@"
1446 int x;
1447 EOF
1448 }
1449
1450 check_host_cpp_condition(){
1451     log check_host_cpp_condition "$@"
1452     header=$1
1453     condition=$2
1454     shift 2
1455     check_host_cpp "$@" <<EOF
1456 #include <$header>
1457 #if !($condition)
1458 #error "unsatisfied condition: $condition"
1459 #endif
1460 EOF
1461 }
1462
1463 cp_if_changed(){
1464     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1465     mkdir -p "$(dirname $2)"
1466     cp -f "$1" "$2"
1467 }
1468
1469 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1470 # system-dependent things.
1471
1472 AVCODEC_COMPONENTS="
1473     bsfs
1474     decoders
1475     encoders
1476     hwaccels
1477     parsers
1478 "
1479
1480 AVDEVICE_COMPONENTS="
1481     indevs
1482     outdevs
1483 "
1484
1485 AVFILTER_COMPONENTS="
1486     filters
1487 "
1488
1489 AVFORMAT_COMPONENTS="
1490     demuxers
1491     muxers
1492     protocols
1493 "
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500 "
1501
1502 EXAMPLE_LIST="
1503     avio_dir_cmd_example
1504     avio_reading_example
1505     decode_audio_example
1506     decode_video_example
1507     demuxing_decoding_example
1508     encode_audio_example
1509     encode_video_example
1510     extract_mvs_example
1511     filter_audio_example
1512     filtering_audio_example
1513     filtering_video_example
1514     http_multiclient_example
1515     hw_decode_example
1516     metadata_example
1517     muxing_example
1518     qsvdec_example
1519     remuxing_example
1520     resampling_audio_example
1521     scaling_video_example
1522     transcode_aac_example
1523     transcoding_example
1524 "
1525
1526 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1527     alsa
1528     appkit
1529     avfoundation
1530     bzlib
1531     coreimage
1532     iconv
1533     libxcb
1534     libxcb_shm
1535     libxcb_shape
1536     libxcb_xfixes
1537     lzma
1538     schannel
1539     sdl2
1540     securetransport
1541     sndio
1542     xlib
1543     zlib
1544 "
1545
1546 EXTERNAL_LIBRARY_GPL_LIST="
1547     avisynth
1548     frei0r
1549     libcdio
1550     librubberband
1551     libvidstab
1552     libx264
1553     libx265
1554     libxavs
1555     libxvid
1556 "
1557
1558 EXTERNAL_LIBRARY_NONFREE_LIST="
1559     decklink
1560     libndi_newtek
1561     libfdk_aac
1562     openssl
1563 "
1564
1565 EXTERNAL_LIBRARY_VERSION3_LIST="
1566     gmp
1567     libopencore_amrnb
1568     libopencore_amrwb
1569     libvmaf
1570     libvo_amrwbenc
1571     rkmpp
1572 "
1573
1574 EXTERNAL_LIBRARY_GPLV3_LIST="
1575     libsmbclient
1576 "
1577
1578 EXTERNAL_LIBRARY_LIST="
1579     $EXTERNAL_LIBRARY_GPL_LIST
1580     $EXTERNAL_LIBRARY_NONFREE_LIST
1581     $EXTERNAL_LIBRARY_VERSION3_LIST
1582     $EXTERNAL_LIBRARY_GPLV3_LIST
1583     chromaprint
1584     gcrypt
1585     gnutls
1586     jni
1587     ladspa
1588     libass
1589     libbluray
1590     libbs2b
1591     libcaca
1592     libcelt
1593     libdc1394
1594     libdrm
1595     libflite
1596     libfontconfig
1597     libfreetype
1598     libfribidi
1599     libgme
1600     libgsm
1601     libiec61883
1602     libilbc
1603     libjack
1604     libkvazaar
1605     libmodplug
1606     libmp3lame
1607     libmysofa
1608     libopencv
1609     libopenh264
1610     libopenjpeg
1611     libopenmpt
1612     libopus
1613     libpulse
1614     librsvg
1615     librtmp
1616     libshine
1617     libsmbclient
1618     libsnappy
1619     libsoxr
1620     libspeex
1621     libssh
1622     libtesseract
1623     libtheora
1624     libtwolame
1625     libv4l2
1626     libvorbis
1627     libvpx
1628     libwavpack
1629     libwebp
1630     libxml2
1631     libzimg
1632     libzmq
1633     libzvbi
1634     mediacodec
1635     openal
1636     opencl
1637     opengl
1638 "
1639
1640 HWACCEL_AUTODETECT_LIBRARY_LIST="
1641     audiotoolbox
1642     crystalhd
1643     cuda
1644     cuvid
1645     d3d11va
1646     dxva2
1647     nvdec
1648     nvenc
1649     vaapi
1650     vdpau
1651     videotoolbox
1652     v4l2_m2m
1653     xvmc
1654 "
1655
1656 # catchall list of things that require external libs to link
1657 EXTRALIBS_LIST="
1658     cpu_init
1659     cws2fws
1660 "
1661
1662 HWACCEL_LIBRARY_NONFREE_LIST="
1663     cuda_sdk
1664     libnpp
1665 "
1666
1667 HWACCEL_LIBRARY_LIST="
1668     $HWACCEL_LIBRARY_NONFREE_LIST
1669     libmfx
1670     mmal
1671     omx
1672 "
1673
1674 DOCUMENT_LIST="
1675     doc
1676     htmlpages
1677     manpages
1678     podpages
1679     txtpages
1680 "
1681
1682 FEATURE_LIST="
1683     ftrapv
1684     gray
1685     hardcoded_tables
1686     omx_rpi
1687     runtime_cpudetect
1688     safe_bitstream_reader
1689     shared
1690     small
1691     static
1692     swscale_alpha
1693 "
1694
1695 LIBRARY_LIST="
1696     avcodec
1697     avdevice
1698     avfilter
1699     avformat
1700     avresample
1701     avutil
1702     postproc
1703     swresample
1704     swscale
1705 "
1706
1707 LICENSE_LIST="
1708     gpl
1709     nonfree
1710     version3
1711 "
1712
1713 PROGRAM_LIST="
1714     ffplay
1715     ffprobe
1716     ffserver
1717     ffmpeg
1718 "
1719
1720 SUBSYSTEM_LIST="
1721     dct
1722     dwt
1723     error_resilience
1724     faan
1725     fast_unaligned
1726     fft
1727     lsp
1728     lzo
1729     mdct
1730     pixelutils
1731     network
1732     rdft
1733 "
1734
1735 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1736 CONFIG_LIST="
1737     $DOCUMENT_LIST
1738     $EXAMPLE_LIST
1739     $EXTERNAL_LIBRARY_LIST
1740     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1741     $HWACCEL_LIBRARY_LIST
1742     $HWACCEL_AUTODETECT_LIBRARY_LIST
1743     $FEATURE_LIST
1744     $LICENSE_LIST
1745     $LIBRARY_LIST
1746     $PROGRAM_LIST
1747     $SUBSYSTEM_LIST
1748     autodetect
1749     fontconfig
1750     linux_perf
1751     memory_poisoning
1752     neon_clobber_test
1753     ossfuzz
1754     pic
1755     thumb
1756     valgrind_backtrace
1757     xmm_clobber_test
1758     $COMPONENT_LIST
1759 "
1760
1761 THREADS_LIST="
1762     pthreads
1763     os2threads
1764     w32threads
1765 "
1766
1767 ATOMICS_LIST="
1768     atomics_gcc
1769     atomics_suncc
1770     atomics_win32
1771 "
1772
1773 AUTODETECT_LIBS="
1774     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1775     $HWACCEL_AUTODETECT_LIBRARY_LIST
1776     $THREADS_LIST
1777 "
1778
1779 ARCH_LIST="
1780     aarch64
1781     alpha
1782     arm
1783     avr32
1784     avr32_ap
1785     avr32_uc
1786     bfin
1787     ia64
1788     m68k
1789     mips
1790     mips64
1791     parisc
1792     ppc
1793     ppc64
1794     s390
1795     sh4
1796     sparc
1797     sparc64
1798     tilegx
1799     tilepro
1800     tomi
1801     x86
1802     x86_32
1803     x86_64
1804 "
1805
1806 ARCH_EXT_LIST_ARM="
1807     armv5te
1808     armv6
1809     armv6t2
1810     armv8
1811     neon
1812     vfp
1813     vfpv3
1814     setend
1815 "
1816
1817 ARCH_EXT_LIST_MIPS="
1818     mipsfpu
1819     mips32r2
1820     mips32r5
1821     mips64r2
1822     mips32r6
1823     mips64r6
1824     mipsdsp
1825     mipsdspr2
1826     msa
1827 "
1828
1829 ARCH_EXT_LIST_LOONGSON="
1830     loongson2
1831     loongson3
1832     mmi
1833 "
1834
1835 ARCH_EXT_LIST_X86_SIMD="
1836     aesni
1837     amd3dnow
1838     amd3dnowext
1839     avx
1840     avx2
1841     fma3
1842     fma4
1843     mmx
1844     mmxext
1845     sse
1846     sse2
1847     sse3
1848     sse4
1849     sse42
1850     ssse3
1851     xop
1852 "
1853
1854 ARCH_EXT_LIST_PPC="
1855     altivec
1856     dcbzl
1857     ldbrx
1858     power8
1859     ppc4xx
1860     vsx
1861 "
1862
1863 ARCH_EXT_LIST_X86="
1864     $ARCH_EXT_LIST_X86_SIMD
1865     cpunop
1866     i686
1867 "
1868
1869 ARCH_EXT_LIST="
1870     $ARCH_EXT_LIST_ARM
1871     $ARCH_EXT_LIST_PPC
1872     $ARCH_EXT_LIST_X86
1873     $ARCH_EXT_LIST_MIPS
1874     $ARCH_EXT_LIST_LOONGSON
1875 "
1876
1877 ARCH_FEATURES="
1878     aligned_stack
1879     fast_64bit
1880     fast_clz
1881     fast_cmov
1882     local_aligned
1883     simd_align_16
1884     simd_align_32
1885 "
1886
1887 BUILTIN_LIST="
1888     atomic_cas_ptr
1889     machine_rw_barrier
1890     MemoryBarrier
1891     mm_empty
1892     rdtsc
1893     sarestart
1894     sem_timedwait
1895     sync_val_compare_and_swap
1896 "
1897 HAVE_LIST_CMDLINE="
1898     inline_asm
1899     symver
1900     x86asm
1901 "
1902
1903 HAVE_LIST_PUB="
1904     bigendian
1905     fast_unaligned
1906 "
1907
1908 HEADERS_LIST="
1909     arpa_inet_h
1910     asm_types_h
1911     cdio_paranoia_h
1912     cdio_paranoia_paranoia_h
1913     cuda_h
1914     dispatch_dispatch_h
1915     dev_bktr_ioctl_bt848_h
1916     dev_bktr_ioctl_meteor_h
1917     dev_ic_bt8xx_h
1918     dev_video_bktr_ioctl_bt848_h
1919     dev_video_meteor_ioctl_meteor_h
1920     direct_h
1921     dirent_h
1922     dxgidebug_h
1923     dxva_h
1924     ES2_gl_h
1925     io_h
1926     machine_ioctl_bt848_h
1927     machine_ioctl_meteor_h
1928     malloc_h
1929     opencv2_core_core_c_h
1930     OpenGL_gl3_h
1931     poll_h
1932     sys_param_h
1933     sys_resource_h
1934     sys_select_h
1935     sys_soundcard_h
1936     sys_time_h
1937     sys_un_h
1938     sys_videoio_h
1939     termios_h
1940     udplite_h
1941     unistd_h
1942     valgrind_valgrind_h
1943     windows_h
1944     winsock2_h
1945 "
1946
1947 INTRINSICS_LIST="
1948     intrinsics_neon
1949 "
1950
1951 COMPLEX_FUNCS="
1952     cabs
1953     cexp
1954 "
1955
1956 MATH_FUNCS="
1957     atanf
1958     atan2f
1959     cbrt
1960     cbrtf
1961     copysign
1962     cosf
1963     erf
1964     exp2
1965     exp2f
1966     expf
1967     hypot
1968     isfinite
1969     isinf
1970     isnan
1971     ldexpf
1972     llrint
1973     llrintf
1974     log2
1975     log2f
1976     log10f
1977     lrint
1978     lrintf
1979     powf
1980     rint
1981     round
1982     roundf
1983     sinf
1984     trunc
1985     truncf
1986 "
1987
1988 SYSTEM_FUNCS="
1989     access
1990     aligned_malloc
1991     arc4random
1992     clock_gettime
1993     closesocket
1994     CommandLineToArgvW
1995     fcntl
1996     getaddrinfo
1997     gethrtime
1998     getopt
1999     GetProcessAffinityMask
2000     GetProcessMemoryInfo
2001     GetProcessTimes
2002     getrusage
2003     GetSystemTimeAsFileTime
2004     gettimeofday
2005     glob
2006     glXGetProcAddress
2007     gmtime_r
2008     inet_aton
2009     isatty
2010     kbhit
2011     localtime_r
2012     lstat
2013     lzo1x_999_compress
2014     mach_absolute_time
2015     MapViewOfFile
2016     memalign
2017     mkstemp
2018     mmap
2019     mprotect
2020     nanosleep
2021     PeekNamedPipe
2022     posix_memalign
2023     pthread_cancel
2024     sched_getaffinity
2025     SetConsoleTextAttribute
2026     SetConsoleCtrlHandler
2027     setmode
2028     setrlimit
2029     Sleep
2030     strerror_r
2031     sysconf
2032     sysctl
2033     usleep
2034     UTGetOSTypeFromString
2035     VirtualAlloc
2036     wglGetProcAddress
2037 "
2038
2039 TOOLCHAIN_FEATURES="
2040     as_arch_directive
2041     as_fpu_directive
2042     as_func
2043     as_object_arch
2044     asm_mod_q
2045     blocks_extension
2046     ebp_available
2047     ebx_available
2048     gnu_as
2049     gnu_windres
2050     ibm_asm
2051     inline_asm_direct_symbol_refs
2052     inline_asm_labels
2053     inline_asm_nonlocal_labels
2054     pragma_deprecated
2055     rsync_contimeout
2056     symver_asm_label
2057     symver_gnu_asm
2058     vfp_args
2059     xform_asm
2060     xmm_clobbers
2061 "
2062
2063 TYPES_LIST="
2064     CONDITION_VARIABLE_Ptr
2065     kCMVideoCodecType_HEVC
2066     socklen_t
2067     struct_addrinfo
2068     struct_group_source_req
2069     struct_ip_mreq_source
2070     struct_ipv6_mreq
2071     struct_msghdr_msg_flags
2072     struct_pollfd
2073     struct_rusage_ru_maxrss
2074     struct_sctp_event_subscribe
2075     struct_sockaddr_in6
2076     struct_sockaddr_sa_len
2077     struct_sockaddr_storage
2078     struct_stat_st_mtim_tv_nsec
2079     struct_v4l2_frmivalenum_discrete
2080 "
2081
2082 HAVE_LIST="
2083     $ARCH_EXT_LIST
2084     $(add_suffix _external $ARCH_EXT_LIST)
2085     $(add_suffix _inline   $ARCH_EXT_LIST)
2086     $ARCH_FEATURES
2087     $ATOMICS_LIST
2088     $BUILTIN_LIST
2089     $COMPLEX_FUNCS
2090     $HAVE_LIST_CMDLINE
2091     $HAVE_LIST_PUB
2092     $HEADERS_LIST
2093     $INTRINSICS_LIST
2094     $MATH_FUNCS
2095     $SYSTEM_FUNCS
2096     $THREADS_LIST
2097     $TOOLCHAIN_FEATURES
2098     $TYPES_LIST
2099     atomics_native
2100     dos_paths
2101     libc_msvcrt
2102     makeinfo
2103     makeinfo_html
2104     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2105     perl
2106     pod2man
2107     section_data_rel_ro
2108     texi2html
2109     threads
2110     uwp
2111     vaapi_drm
2112     vaapi_x11
2113     vdpau_x11
2114     winrt
2115     wincrypt
2116 "
2117
2118 # options emitted with CONFIG_ prefix but not available on the command line
2119 CONFIG_EXTRA="
2120     aandcttables
2121     ac3dsp
2122     adts_header
2123     audio_frame_queue
2124     audiodsp
2125     blockdsp
2126     bswapdsp
2127     cabac
2128     cbs
2129     cbs_h264
2130     cbs_h265
2131     cbs_mpeg2
2132     dirac_parse
2133     dvprofile
2134     exif
2135     faandct
2136     faanidct
2137     fdctdsp
2138     flacdsp
2139     fmtconvert
2140     frame_thread_encoder
2141     g722dsp
2142     golomb
2143     gplv3
2144     h263dsp
2145     h264chroma
2146     h264dsp
2147     h264parse
2148     h264pred
2149     h264qpel
2150     hevcparse
2151     hpeldsp
2152     huffman
2153     huffyuvdsp
2154     huffyuvencdsp
2155     idctdsp
2156     iirfilter
2157     mdct15
2158     intrax8
2159     iso_media
2160     ividsp
2161     jpegtables
2162     lgplv3
2163     libx262
2164     llauddsp
2165     llviddsp
2166     llvidencdsp
2167     lpc
2168     lzf
2169     me_cmp
2170     mpeg_er
2171     mpegaudio
2172     mpegaudiodsp
2173     mpegaudioheader
2174     mpegvideo
2175     mpegvideoenc
2176     mss34dsp
2177     pixblockdsp
2178     qpeldsp
2179     qsv
2180     qsvdec
2181     qsvenc
2182     qsvvpp
2183     rangecoder
2184     riffdec
2185     riffenc
2186     rtpdec
2187     rtpenc_chain
2188     rv34dsp
2189     sinewin
2190     snappy
2191     srtp
2192     startcode
2193     texturedsp
2194     texturedspenc
2195     tpeldsp
2196     vaapi_1
2197     vaapi_encode
2198     vc1dsp
2199     videodsp
2200     vp3dsp
2201     vp56dsp
2202     vp8dsp
2203     wma_freqs
2204     wmv2dsp
2205 "
2206
2207 CMDLINE_SELECT="
2208     $ARCH_EXT_LIST
2209     $CONFIG_LIST
2210     $HAVE_LIST_CMDLINE
2211     $THREADS_LIST
2212     asm
2213     cross_compile
2214     debug
2215     extra_warnings
2216     logging
2217     lto
2218     optimizations
2219     rpath
2220     stripping
2221 "
2222
2223 PATHS_LIST="
2224     bindir
2225     datadir
2226     docdir
2227     incdir
2228     libdir
2229     mandir
2230     pkgconfigdir
2231     prefix
2232     shlibdir
2233     install_name_dir
2234 "
2235
2236 CMDLINE_SET="
2237     $PATHS_LIST
2238     ar
2239     arch
2240     as
2241     assert_level
2242     build_suffix
2243     cc
2244     objcc
2245     cpu
2246     cross_prefix
2247     custom_allocator
2248     cxx
2249     dep_cc
2250     doxygen
2251     env
2252     extra_version
2253     gas
2254     host_cc
2255     host_cflags
2256     host_extralibs
2257     host_ld
2258     host_ldflags
2259     host_os
2260     ignore_tests
2261     install
2262     ld
2263     ln_s
2264     logfile
2265     malloc_prefix
2266     nm
2267     optflags
2268     nvccflags
2269     pkg_config
2270     pkg_config_flags
2271     progs_suffix
2272     random_seed
2273     ranlib
2274     samples
2275     strip
2276     sws_max_filter_size
2277     sysinclude
2278     sysroot
2279     target_exec
2280     target_os
2281     target_path
2282     target_samples
2283     tempprefix
2284     toolchain
2285     valgrind
2286     x86asmexe
2287 "
2288
2289 CMDLINE_APPEND="
2290     extra_cflags
2291     extra_cxxflags
2292     extra_objcflags
2293     host_cppflags
2294 "
2295
2296 # code dependency declarations
2297
2298 # architecture extensions
2299
2300 armv5te_deps="arm"
2301 armv6_deps="arm"
2302 armv6t2_deps="arm"
2303 armv8_deps="aarch64"
2304 neon_deps_any="aarch64 arm"
2305 intrinsics_neon_deps="neon"
2306 vfp_deps_any="aarch64 arm"
2307 vfpv3_deps="vfp"
2308 setend_deps="arm"
2309
2310 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2311
2312 altivec_deps="ppc"
2313 dcbzl_deps="ppc"
2314 ldbrx_deps="ppc"
2315 ppc4xx_deps="ppc"
2316 vsx_deps="altivec"
2317 power8_deps="vsx"
2318
2319 loongson2_deps="mips"
2320 loongson3_deps="mips"
2321 mips32r2_deps="mips"
2322 mips32r5_deps="mips"
2323 mips32r6_deps="mips"
2324 mips64r2_deps="mips"
2325 mips64r6_deps="mips"
2326 mipsfpu_deps="mips"
2327 mipsdsp_deps="mips"
2328 mipsdspr2_deps="mips"
2329 mmi_deps="mips"
2330 msa_deps="mipsfpu"
2331
2332 cpunop_deps="i686"
2333 x86_64_select="i686"
2334 x86_64_suggest="fast_cmov"
2335
2336 amd3dnow_deps="mmx"
2337 amd3dnowext_deps="amd3dnow"
2338 i686_deps="x86"
2339 mmx_deps="x86"
2340 mmxext_deps="mmx"
2341 sse_deps="mmxext"
2342 sse2_deps="sse"
2343 sse3_deps="sse2"
2344 ssse3_deps="sse3"
2345 sse4_deps="ssse3"
2346 sse42_deps="sse4"
2347 aesni_deps="sse42"
2348 avx_deps="sse42"
2349 xop_deps="avx"
2350 fma3_deps="avx"
2351 fma4_deps="avx"
2352 avx2_deps="avx"
2353
2354 mmx_external_deps="x86asm"
2355 mmx_inline_deps="inline_asm x86"
2356 mmx_suggest="mmx_external mmx_inline"
2357
2358 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2359     eval dep=\$${ext}_deps
2360     eval ${ext}_external_deps='"${dep}_external"'
2361     eval ${ext}_inline_deps='"${dep}_inline"'
2362     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2363 done
2364
2365 aligned_stack_if_any="aarch64 ppc x86"
2366 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2367 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2368 fast_unaligned_if_any="aarch64 ppc x86"
2369 simd_align_16_if_any="altivec neon sse"
2370 simd_align_32_if_any="avx"
2371
2372 # system capabilities
2373 symver_if_any="symver_asm_label symver_gnu_asm"
2374 valgrind_backtrace_conflict="optimizations"
2375 valgrind_backtrace_deps="valgrind_valgrind_h"
2376
2377 # threading support
2378 atomics_gcc_if="sync_val_compare_and_swap"
2379 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2380 atomics_win32_if="MemoryBarrier"
2381 atomics_native_if_any="$ATOMICS_LIST"
2382 w32threads_deps="atomics_native"
2383 threads_if_any="$THREADS_LIST"
2384
2385 # subsystems
2386 cbs_h264_select="cbs golomb"
2387 cbs_h265_select="cbs golomb"
2388 cbs_mpeg2_select="cbs"
2389 dct_select="rdft"
2390 dirac_parse_select="golomb"
2391 error_resilience_select="me_cmp"
2392 faandct_deps="faan"
2393 faandct_select="fdctdsp"
2394 faanidct_deps="faan"
2395 faanidct_select="idctdsp"
2396 h264dsp_select="startcode"
2397 hevcparse_select="golomb"
2398 frame_thread_encoder_deps="encoders threads"
2399 intrax8_select="blockdsp idctdsp"
2400 mdct_select="fft"
2401 mdct15_select="fft"
2402 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2403 mpeg_er_select="error_resilience"
2404 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2405 mpegaudiodsp_select="dct"
2406 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2407 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2408 vc1dsp_select="h264chroma qpeldsp startcode"
2409 rdft_select="fft"
2410
2411 # decoders / encoders
2412 aac_decoder_select="adts_header mdct15 mdct sinewin"
2413 aac_fixed_decoder_select="mdct sinewin"
2414 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2415 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2416 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2417 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2418 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2419 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2420 adpcm_g722_decoder_select="g722dsp"
2421 adpcm_g722_encoder_select="g722dsp"
2422 aic_decoder_select="golomb idctdsp"
2423 alac_encoder_select="lpc"
2424 als_decoder_select="bswapdsp"
2425 amrnb_decoder_select="lsp"
2426 amrwb_decoder_select="lsp"
2427 amv_decoder_select="sp5x_decoder exif"
2428 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2429 ape_decoder_select="bswapdsp llauddsp"
2430 apng_decoder_select="zlib"
2431 apng_encoder_select="llvidencdsp zlib"
2432 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2433 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2434 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2435 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2436 atrac1_decoder_select="mdct sinewin"
2437 atrac3_decoder_select="mdct"
2438 atrac3p_decoder_select="mdct sinewin"
2439 avrn_decoder_select="exif jpegtables"
2440 bink_decoder_select="blockdsp hpeldsp"
2441 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2442 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2443 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2444 clearvideo_decoder_select="idctdsp"
2445 cllc_decoder_select="bswapdsp"
2446 comfortnoise_encoder_select="lpc"
2447 cook_decoder_select="audiodsp mdct sinewin"
2448 cscd_decoder_select="lzo"
2449 cscd_decoder_suggest="zlib"
2450 dca_decoder_select="mdct"
2451 dds_decoder_select="texturedsp"
2452 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2453 dnxhd_decoder_select="blockdsp idctdsp"
2454 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2455 dolby_e_decoder_select="mdct"
2456 dvvideo_decoder_select="dvprofile idctdsp"
2457 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2458 dxa_decoder_select="zlib"
2459 dxv_decoder_select="lzf texturedsp"
2460 eac3_decoder_select="ac3_decoder"
2461 eac3_encoder_select="ac3_encoder"
2462 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2463 eatgq_decoder_select="aandcttables"
2464 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2465 exr_decoder_select="zlib"
2466 ffv1_decoder_select="rangecoder"
2467 ffv1_encoder_select="rangecoder"
2468 ffvhuff_decoder_select="huffyuv_decoder"
2469 ffvhuff_encoder_select="huffyuv_encoder"
2470 fic_decoder_select="golomb"
2471 flac_decoder_select="flacdsp"
2472 flac_encoder_select="bswapdsp flacdsp lpc"
2473 flashsv2_decoder_select="zlib"
2474 flashsv2_encoder_select="zlib"
2475 flashsv_decoder_select="zlib"
2476 flashsv_encoder_select="zlib"
2477 flv_decoder_select="h263_decoder"
2478 flv_encoder_select="h263_encoder"
2479 fourxm_decoder_select="blockdsp bswapdsp"
2480 fraps_decoder_select="bswapdsp huffman"
2481 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2482 g729_decoder_select="audiodsp"
2483 h261_decoder_select="mpegvideo"
2484 h261_encoder_select="aandcttables mpegvideoenc"
2485 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2486 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2487 h263i_decoder_select="h263_decoder"
2488 h263p_decoder_select="h263_decoder"
2489 h263p_encoder_select="h263_encoder"
2490 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2491 h264_decoder_suggest="error_resilience"
2492 hap_decoder_select="snappy texturedsp"
2493 hap_encoder_deps="libsnappy"
2494 hap_encoder_select="texturedspenc"
2495 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2496 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2497 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2498 iac_decoder_select="imc_decoder"
2499 imc_decoder_select="bswapdsp fft mdct sinewin"
2500 indeo3_decoder_select="hpeldsp"
2501 indeo4_decoder_select="ividsp"
2502 indeo5_decoder_select="ividsp"
2503 interplay_video_decoder_select="hpeldsp"
2504 jpegls_decoder_select="mjpeg_decoder"
2505 jv_decoder_select="blockdsp"
2506 lagarith_decoder_select="llviddsp"
2507 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2508 magicyuv_decoder_select="llviddsp"
2509 magicyuv_encoder_select="llvidencdsp"
2510 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2511 metasound_decoder_select="lsp mdct sinewin"
2512 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2513 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2514 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2515 mjpegb_decoder_select="mjpeg_decoder"
2516 mlp_decoder_select="mlp_parser"
2517 mlp_encoder_select="lpc"
2518 motionpixels_decoder_select="bswapdsp"
2519 mp1_decoder_select="mpegaudio"
2520 mp1float_decoder_select="mpegaudio"
2521 mp2_decoder_select="mpegaudio"
2522 mp2float_decoder_select="mpegaudio"
2523 mp3_decoder_select="mpegaudio"
2524 mp3adu_decoder_select="mpegaudio"
2525 mp3adufloat_decoder_select="mpegaudio"
2526 mp3float_decoder_select="mpegaudio"
2527 mp3on4_decoder_select="mpegaudio"
2528 mp3on4float_decoder_select="mpegaudio"
2529 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2530 mpc8_decoder_select="mpegaudiodsp"
2531 mpegvideo_decoder_select="mpegvideo"
2532 mpeg1video_decoder_select="mpegvideo"
2533 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2534 mpeg2video_decoder_select="mpegvideo"
2535 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2536 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2537 mpeg4_encoder_select="h263_encoder"
2538 msa1_decoder_select="mss34dsp"
2539 mscc_decoder_select="zlib"
2540 msmpeg4v1_decoder_select="h263_decoder"
2541 msmpeg4v2_decoder_select="h263_decoder"
2542 msmpeg4v2_encoder_select="h263_encoder"
2543 msmpeg4v3_decoder_select="h263_decoder"
2544 msmpeg4v3_encoder_select="h263_encoder"
2545 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2546 mts2_decoder_select="mss34dsp"
2547 mxpeg_decoder_select="mjpeg_decoder"
2548 nellymoser_decoder_select="mdct sinewin"
2549 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2550 nuv_decoder_select="idctdsp lzo"
2551 on2avc_decoder_select="mdct"
2552 opus_decoder_deps="swresample"
2553 opus_decoder_select="mdct15"
2554 opus_encoder_select="audio_frame_queue mdct15"
2555 png_decoder_select="zlib"
2556 png_encoder_select="llvidencdsp zlib"
2557 prores_decoder_select="blockdsp idctdsp"
2558 prores_encoder_select="fdctdsp"
2559 qcelp_decoder_select="lsp"
2560 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2561 ra_144_decoder_select="audiodsp"
2562 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2563 ralf_decoder_select="golomb"
2564 rawvideo_decoder_select="bswapdsp"
2565 rscc_decoder_select="zlib"
2566 rtjpeg_decoder_select="me_cmp"
2567 rv10_decoder_select="h263_decoder"
2568 rv10_encoder_select="h263_encoder"
2569 rv20_decoder_select="h263_decoder"
2570 rv20_encoder_select="h263_encoder"
2571 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2572 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2573 screenpresso_decoder_select="zlib"
2574 shorten_decoder_select="bswapdsp"
2575 sipr_decoder_select="lsp"
2576 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2577 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2578 sonic_decoder_select="golomb rangecoder"
2579 sonic_encoder_select="golomb rangecoder"
2580 sonic_ls_encoder_select="golomb rangecoder"
2581 sp5x_decoder_select="mjpeg_decoder"
2582 srgc_decoder_select="zlib"
2583 svq1_decoder_select="hpeldsp"
2584 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2585 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2586 svq3_decoder_suggest="zlib"
2587 tak_decoder_select="audiodsp"
2588 tdsc_decoder_select="zlib mjpeg_decoder"
2589 theora_decoder_select="vp3_decoder"
2590 thp_decoder_select="mjpeg_decoder"
2591 tiff_decoder_suggest="zlib lzma"
2592 tiff_encoder_suggest="zlib"
2593 truehd_decoder_select="mlp_parser"
2594 truehd_encoder_select="lpc"
2595 truemotion2_decoder_select="bswapdsp"
2596 truespeech_decoder_select="bswapdsp"
2597 tscc_decoder_select="zlib"
2598 twinvq_decoder_select="mdct lsp sinewin"
2599 txd_decoder_select="texturedsp"
2600 utvideo_decoder_select="bswapdsp llviddsp"
2601 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2602 vble_decoder_select="llviddsp"
2603 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2604 vc1image_decoder_select="vc1_decoder"
2605 vorbis_decoder_select="mdct"
2606 vorbis_encoder_select="mdct"
2607 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2608 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2609 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2610 vp6a_decoder_select="vp6_decoder"
2611 vp6f_decoder_select="vp6_decoder"
2612 vp7_decoder_select="h264pred videodsp vp8dsp"
2613 vp8_decoder_select="h264pred videodsp vp8dsp"
2614 vp9_decoder_select="videodsp vp9_parser"
2615 webp_decoder_select="vp8_decoder exif"
2616 wmalossless_decoder_select="llauddsp"
2617 wmapro_decoder_select="mdct sinewin wma_freqs"
2618 wmav1_decoder_select="mdct sinewin wma_freqs"
2619 wmav1_encoder_select="mdct sinewin wma_freqs"
2620 wmav2_decoder_select="mdct sinewin wma_freqs"
2621 wmav2_encoder_select="mdct sinewin wma_freqs"
2622 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2623 wmv1_decoder_select="h263_decoder"
2624 wmv1_encoder_select="h263_encoder"
2625 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2626 wmv2_encoder_select="h263_encoder wmv2dsp"
2627 wmv3_decoder_select="vc1_decoder"
2628 wmv3image_decoder_select="wmv3_decoder"
2629 xma1_decoder_select="wmapro_decoder"
2630 xma2_decoder_select="wmapro_decoder"
2631 zerocodec_decoder_select="zlib"
2632 zlib_decoder_select="zlib"
2633 zlib_encoder_select="zlib"
2634 zmbv_decoder_select="zlib"
2635 zmbv_encoder_select="zlib"
2636
2637 # hardware accelerators
2638 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2639 cuda_deps_any="libdl LoadLibrary"
2640 cuvid_deps="cuda"
2641 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2642 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2643 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2644 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2645 xvmc_deps="X11_extensions_XvMClib_h"
2646
2647 h263_vaapi_hwaccel_deps="vaapi"
2648 h263_vaapi_hwaccel_select="h263_decoder"
2649 h263_videotoolbox_hwaccel_deps="videotoolbox"
2650 h263_videotoolbox_hwaccel_select="h263_decoder"
2651 h264_cuvid_hwaccel_deps="cuda cuvid"
2652 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2653 h264_d3d11va_hwaccel_deps="d3d11va"
2654 h264_d3d11va_hwaccel_select="h264_decoder"
2655 h264_d3d11va2_hwaccel_deps="d3d11va"
2656 h264_d3d11va2_hwaccel_select="h264_decoder"
2657 h264_dxva2_hwaccel_deps="dxva2"
2658 h264_dxva2_hwaccel_select="h264_decoder"
2659 h264_mediacodec_hwaccel_deps="mediacodec"
2660 h264_mmal_hwaccel_deps="mmal"
2661 h264_nvdec_hwaccel_deps="cuda nvdec"
2662 h264_nvdec_hwaccel_select="h264_decoder"
2663 h264_qsv_hwaccel_deps="libmfx"
2664 h264_vaapi_hwaccel_deps="vaapi"
2665 h264_vaapi_hwaccel_select="h264_decoder"
2666 h264_vdpau_hwaccel_deps="vdpau"
2667 h264_vdpau_hwaccel_select="h264_decoder"
2668 h264_videotoolbox_hwaccel_deps="videotoolbox"
2669 h264_videotoolbox_hwaccel_select="h264_decoder"
2670 hevc_cuvid_hwaccel_deps="cuda cuvid"
2671 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2672 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2673 hevc_d3d11va_hwaccel_select="hevc_decoder"
2674 hevc_mediacodec_hwaccel_deps="mediacodec"
2675 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2676 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2677 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2678 hevc_dxva2_hwaccel_select="hevc_decoder"
2679 hevc_nvdec_hwaccel_deps="cuda nvdec"
2680 hevc_nvdec_hwaccel_select="hevc_decoder"
2681 hevc_qsv_hwaccel_deps="libmfx"
2682 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2683 hevc_vaapi_hwaccel_select="hevc_decoder"
2684 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2685 hevc_vdpau_hwaccel_select="hevc_decoder"
2686 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2687 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2688 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2689 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2690 mpeg_xvmc_hwaccel_deps="xvmc"
2691 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2692 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2693 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2694 mpeg1_vdpau_hwaccel_deps="vdpau"
2695 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2696 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2697 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2698 mpeg1_xvmc_hwaccel_deps="xvmc"
2699 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2700 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2701 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2702 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2703 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2704 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2705 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2706 mpeg2_dxva2_hwaccel_deps="dxva2"
2707 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2708 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2709 mpeg2_mmal_hwaccel_deps="mmal"
2710 mpeg2_qsv_hwaccel_deps="libmfx"
2711 mpeg2_vaapi_hwaccel_deps="vaapi"
2712 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2713 mpeg2_vdpau_hwaccel_deps="vdpau"
2714 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2715 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2716 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2717 mpeg2_xvmc_hwaccel_deps="xvmc"
2718 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2719 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2720 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2721 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2722 mpeg4_mmal_hwaccel_deps="mmal"
2723 mpeg4_vaapi_hwaccel_deps="vaapi"
2724 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2725 mpeg4_vdpau_hwaccel_deps="vdpau"
2726 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2727 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2728 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2729 vc1_cuvid_hwaccel_deps="cuda cuvid"
2730 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2731 vc1_d3d11va_hwaccel_deps="d3d11va"
2732 vc1_d3d11va_hwaccel_select="vc1_decoder"
2733 vc1_d3d11va2_hwaccel_deps="d3d11va"
2734 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2735 vc1_dxva2_hwaccel_deps="dxva2"
2736 vc1_dxva2_hwaccel_select="vc1_decoder"
2737 vc1_mmal_hwaccel_deps="mmal"
2738 vc1_qsv_hwaccel_deps="libmfx"
2739 vc1_vaapi_hwaccel_deps="vaapi"
2740 vc1_vaapi_hwaccel_select="vc1_decoder"
2741 vc1_vdpau_hwaccel_deps="vdpau"
2742 vc1_vdpau_hwaccel_select="vc1_decoder"
2743 vp8_cuvid_hwaccel_deps="cuda cuvid"
2744 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2745 vp9_cuvid_hwaccel_deps="cuda cuvid"
2746 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2747 vp8_mediacodec_hwaccel_deps="mediacodec"
2748 vp8_qsv_hwaccel_deps="libmfx"
2749 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2750 vp9_d3d11va_hwaccel_select="vp9_decoder"
2751 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2752 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2753 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2754 vp9_dxva2_hwaccel_select="vp9_decoder"
2755 vp9_mediacodec_hwaccel_deps="mediacodec"
2756 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2757 vp9_vaapi_hwaccel_select="vp9_decoder"
2758 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2759 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2760 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2761 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2762 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2763
2764 # hardware-accelerated codecs
2765 omx_deps="libdl pthreads"
2766 omx_rpi_select="omx"
2767 qsv_deps="libmfx"
2768 qsvdec_select="qsv"
2769 qsvenc_select="qsv"
2770 qsvvpp_select="qsv"
2771 vaapi_encode_deps="vaapi"
2772 v4l2_m2m_deps_any="linux_videodev2_h"
2773
2774 hwupload_cuda_filter_deps="cuda"
2775 scale_npp_filter_deps="cuda libnpp"
2776 scale_cuda_filter_deps="cuda_sdk"
2777 thumbnail_cuda_filter_deps="cuda_sdk"
2778
2779 nvenc_deps="cuda"
2780 nvenc_deps_any="libdl LoadLibrary"
2781 nvenc_encoder_deps="nvenc"
2782
2783 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2784 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2785 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2786 h264_cuvid_decoder_deps="cuda cuvid"
2787 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2788 h264_mediacodec_decoder_deps="mediacodec"
2789 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2790 h264_mmal_decoder_deps="mmal"
2791 h264_nvenc_encoder_deps="nvenc"
2792 h264_omx_encoder_deps="omx"
2793 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2794 h264_qsv_encoder_select="qsvenc"
2795 h264_rkmpp_decoder_deps="rkmpp"
2796 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2797 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2798 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2799 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2800 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2801 hevc_cuvid_decoder_deps="cuda cuvid"
2802 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2803 hevc_mediacodec_decoder_deps="mediacodec"
2804 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2805 hevc_nvenc_encoder_deps="nvenc"
2806 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2807 hevc_qsv_encoder_select="hevcparse qsvenc"
2808 hevc_rkmpp_decoder_deps="rkmpp"
2809 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2810 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2811 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2812 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2813 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2814 mjpeg_cuvid_decoder_deps="cuda cuvid"
2815 mjpeg_qsv_encoder_deps="libmfx"
2816 mjpeg_qsv_encoder_select="qsvenc"
2817 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2818 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2819 mpeg1_cuvid_decoder_deps="cuda cuvid"
2820 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2821 mpeg2_crystalhd_decoder_select="crystalhd"
2822 mpeg2_cuvid_decoder_deps="cuda cuvid"
2823 mpeg2_mmal_decoder_deps="mmal"
2824 mpeg2_mediacodec_decoder_deps="mediacodec"
2825 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2826 mpeg2_qsv_encoder_select="qsvenc"
2827 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2828 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2829 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2830 mpeg4_crystalhd_decoder_select="crystalhd"
2831 mpeg4_cuvid_decoder_deps="cuda cuvid"
2832 mpeg4_mediacodec_decoder_deps="mediacodec"
2833 mpeg4_mmal_decoder_deps="mmal"
2834 mpeg4_omx_encoder_deps="omx"
2835 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2836 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2837 msmpeg4_crystalhd_decoder_select="crystalhd"
2838 nvenc_h264_encoder_select="h264_nvenc_encoder"
2839 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2840 vc1_crystalhd_decoder_select="crystalhd"
2841 vc1_cuvid_decoder_deps="cuda cuvid"
2842 vc1_mmal_decoder_deps="mmal"
2843 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2844 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2845 vp8_cuvid_decoder_deps="cuda cuvid"
2846 vp8_mediacodec_decoder_deps="mediacodec"
2847 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2848 vp8_rkmpp_decoder_deps="rkmpp"
2849 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2850 vp8_vaapi_encoder_select="vaapi_encode"
2851 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2852 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2853 vp9_cuvid_decoder_deps="cuda cuvid"
2854 vp9_mediacodec_decoder_deps="mediacodec"
2855 vp9_rkmpp_decoder_deps="rkmpp"
2856 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2857 vp9_vaapi_encoder_select="vaapi_encode"
2858 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2859 wmv3_crystalhd_decoder_select="crystalhd"
2860
2861 # parsers
2862 aac_parser_select="adts_header"
2863 h264_parser_select="golomb h264dsp h264parse"
2864 hevc_parser_select="hevcparse"
2865 mpegaudio_parser_select="mpegaudioheader"
2866 mpegvideo_parser_select="mpegvideo"
2867 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2868 vc1_parser_select="vc1dsp"
2869
2870 # bitstream_filters
2871 aac_adtstoasc_bsf_select="adts_header"
2872 h264_metadata_bsf_select="cbs_h264"
2873 h264_redundant_pps_bsf_select="cbs_h264"
2874 hevc_metadata_bsf_select="cbs_h265"
2875 mjpeg2jpeg_bsf_select="jpegtables"
2876 mpeg2_metadata_bsf_select="cbs_mpeg2"
2877 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2878
2879 # external libraries
2880 aac_at_decoder_deps="audiotoolbox"
2881 ac3_at_decoder_deps="audiotoolbox"
2882 ac3_at_decoder_select="ac3_parser"
2883 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2884 alac_at_decoder_deps="audiotoolbox"
2885 amr_nb_at_decoder_deps="audiotoolbox"
2886 avisynth_deps_any="libdl LoadLibrary"
2887 avisynth_demuxer_deps="avisynth"
2888 avisynth_demuxer_select="riffdec"
2889 eac3_at_decoder_deps="audiotoolbox"
2890 eac3_at_decoder_select="ac3_parser"
2891 gsm_ms_at_decoder_deps="audiotoolbox"
2892 ilbc_at_decoder_deps="audiotoolbox"
2893 mp1_at_decoder_deps="audiotoolbox"
2894 mp2_at_decoder_deps="audiotoolbox"
2895 mp3_at_decoder_deps="audiotoolbox"
2896 mp1_at_decoder_select="mpegaudioheader"
2897 mp2_at_decoder_select="mpegaudioheader"
2898 mp3_at_decoder_select="mpegaudioheader"
2899 pcm_alaw_at_decoder_deps="audiotoolbox"
2900 pcm_mulaw_at_decoder_deps="audiotoolbox"
2901 qdmc_at_decoder_deps="audiotoolbox"
2902 qdm2_at_decoder_deps="audiotoolbox"
2903 aac_at_encoder_deps="audiotoolbox"
2904 aac_at_encoder_select="audio_frame_queue"
2905 alac_at_encoder_deps="audiotoolbox"
2906 alac_at_encoder_select="audio_frame_queue"
2907 ilbc_at_encoder_deps="audiotoolbox"
2908 ilbc_at_encoder_select="audio_frame_queue"
2909 pcm_alaw_at_encoder_deps="audiotoolbox"
2910 pcm_alaw_at_encoder_select="audio_frame_queue"
2911 pcm_mulaw_at_encoder_deps="audiotoolbox"
2912 pcm_mulaw_at_encoder_select="audio_frame_queue"
2913 chromaprint_muxer_deps="chromaprint"
2914 h264_videotoolbox_encoder_deps="pthreads"
2915 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2916 libcelt_decoder_deps="libcelt"
2917 libfdk_aac_decoder_deps="libfdk_aac"
2918 libfdk_aac_encoder_deps="libfdk_aac"
2919 libfdk_aac_encoder_select="audio_frame_queue"
2920 libgme_demuxer_deps="libgme"
2921 libgsm_decoder_deps="libgsm"
2922 libgsm_encoder_deps="libgsm"
2923 libgsm_ms_decoder_deps="libgsm"
2924 libgsm_ms_encoder_deps="libgsm"
2925 libilbc_decoder_deps="libilbc"
2926 libilbc_encoder_deps="libilbc"
2927 libkvazaar_encoder_deps="libkvazaar"
2928 libmodplug_demuxer_deps="libmodplug"
2929 libmp3lame_encoder_deps="libmp3lame"
2930 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2931 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2932 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2933 libopencore_amrnb_encoder_select="audio_frame_queue"
2934 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2935 libopenh264_decoder_deps="libopenh264"
2936 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2937 libopenh264_encoder_deps="libopenh264"
2938 libopenjpeg_decoder_deps="libopenjpeg"
2939 libopenjpeg_encoder_deps="libopenjpeg"
2940 libopenmpt_demuxer_deps="libopenmpt"
2941 libopus_decoder_deps="libopus"
2942 libopus_encoder_deps="libopus"
2943 libopus_encoder_select="audio_frame_queue"
2944 librsvg_decoder_deps="librsvg"
2945 libshine_encoder_deps="libshine"
2946 libshine_encoder_select="audio_frame_queue"
2947 libspeex_decoder_deps="libspeex"
2948 libspeex_encoder_deps="libspeex"
2949 libspeex_encoder_select="audio_frame_queue"
2950 libtheora_encoder_deps="libtheora"
2951 libtwolame_encoder_deps="libtwolame"
2952 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2953 libvorbis_decoder_deps="libvorbis"
2954 libvorbis_encoder_deps="libvorbis libvorbisenc"
2955 libvorbis_encoder_select="audio_frame_queue"
2956 libvpx_vp8_decoder_deps="libvpx"
2957 libvpx_vp8_encoder_deps="libvpx"
2958 libvpx_vp9_decoder_deps="libvpx"
2959 libvpx_vp9_encoder_deps="libvpx"
2960 libwavpack_encoder_deps="libwavpack"
2961 libwavpack_encoder_select="audio_frame_queue"
2962 libwebp_encoder_deps="libwebp"
2963 libwebp_anim_encoder_deps="libwebp"
2964 libx262_encoder_deps="libx262"
2965 libx264_encoder_deps="libx264"
2966 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2967 libx264rgb_encoder_select="libx264_encoder"
2968 libx265_encoder_deps="libx265"
2969 libxavs_encoder_deps="libxavs"
2970 libxvid_encoder_deps="libxvid"
2971 libzvbi_teletext_decoder_deps="libzvbi"
2972 videotoolbox_suggest="coreservices"
2973 videotoolbox_deps="corefoundation coremedia corevideo"
2974 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2975
2976 # demuxers / muxers
2977 ac3_demuxer_select="ac3_parser"
2978 aiff_muxer_select="iso_media"
2979 asf_demuxer_select="riffdec"
2980 asf_o_demuxer_select="riffdec"
2981 asf_muxer_select="riffenc"
2982 asf_stream_muxer_select="asf_muxer"
2983 avi_demuxer_select="iso_media riffdec exif"
2984 avi_muxer_select="riffenc"
2985 caf_demuxer_select="iso_media riffdec"
2986 caf_muxer_select="iso_media"
2987 dash_muxer_select="mp4_muxer"
2988 dash_demuxer_deps="libxml2"
2989 dirac_demuxer_select="dirac_parser"
2990 dts_demuxer_select="dca_parser"
2991 dtshd_demuxer_select="dca_parser"
2992 dv_demuxer_select="dvprofile"
2993 dv_muxer_select="dvprofile"
2994 dxa_demuxer_select="riffdec"
2995 eac3_demuxer_select="ac3_parser"
2996 f4v_muxer_select="mov_muxer"
2997 fifo_muxer_deps="threads"
2998 flac_demuxer_select="flac_parser"
2999 hds_muxer_select="flv_muxer"
3000 hls_muxer_select="mpegts_muxer"
3001 hls_muxer_suggest="gcrypt openssl"
3002 image2_alias_pix_demuxer_select="image2_demuxer"
3003 image2_brender_pix_demuxer_select="image2_demuxer"
3004 ipod_muxer_select="mov_muxer"
3005 ismv_muxer_select="mov_muxer"
3006 matroska_audio_muxer_select="matroska_muxer"
3007 matroska_demuxer_select="iso_media riffdec"
3008 matroska_demuxer_suggest="bzlib lzo zlib"
3009 matroska_muxer_select="iso_media riffenc"
3010 mmf_muxer_select="riffenc"
3011 mov_demuxer_select="iso_media riffdec"
3012 mov_demuxer_suggest="zlib"
3013 mov_muxer_select="iso_media riffenc rtpenc_chain"
3014 mp3_demuxer_select="mpegaudio_parser"
3015 mp3_muxer_select="mpegaudioheader"
3016 mp4_muxer_select="mov_muxer"
3017 mpegts_demuxer_select="iso_media"
3018 mpegts_muxer_select="adts_muxer latm_muxer"
3019 mpegtsraw_demuxer_select="mpegts_demuxer"
3020 mxf_d10_muxer_select="mxf_muxer"
3021 mxf_opatom_muxer_select="mxf_muxer"
3022 nut_muxer_select="riffenc"
3023 nuv_demuxer_select="riffdec"
3024 oga_muxer_select="ogg_muxer"
3025 ogg_demuxer_select="dirac_parse"
3026 ogv_muxer_select="ogg_muxer"
3027 opus_muxer_select="ogg_muxer"
3028 psp_muxer_select="mov_muxer"
3029 rtp_demuxer_select="sdp_demuxer"
3030 rtp_muxer_select="golomb"
3031 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3032 rtsp_demuxer_select="http_protocol rtpdec"
3033 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3034 sap_demuxer_select="sdp_demuxer"
3035 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3036 sdp_demuxer_select="rtpdec"
3037 smoothstreaming_muxer_select="ismv_muxer"
3038 spdif_demuxer_select="adts_header"
3039 spdif_muxer_select="adts_header"
3040 spx_muxer_select="ogg_muxer"
3041 swf_demuxer_suggest="zlib"
3042 tak_demuxer_select="tak_parser"
3043 tg2_muxer_select="mov_muxer"
3044 tgp_muxer_select="mov_muxer"
3045 vobsub_demuxer_select="mpegps_demuxer"
3046 w64_demuxer_select="wav_demuxer"
3047 w64_muxer_select="wav_muxer"
3048 wav_demuxer_select="riffdec"
3049 wav_muxer_select="riffenc"
3050 webm_muxer_select="iso_media riffenc"
3051 webm_dash_manifest_demuxer_select="matroska_demuxer"
3052 wtv_demuxer_select="mpegts_demuxer riffdec"
3053 wtv_muxer_select="mpegts_muxer riffenc"
3054 xmv_demuxer_select="riffdec"
3055 xwma_demuxer_select="riffdec"
3056
3057 # indevs / outdevs
3058 alsa_indev_deps="alsa"
3059 alsa_outdev_deps="alsa"
3060 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3061 avfoundation_indev_suggest="coregraphics applicationservices"
3062 avfoundation_indev_extralibs="-framework Foundation"
3063 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3064 caca_outdev_deps="libcaca"
3065 decklink_deps_any="libdl LoadLibrary"
3066 decklink_indev_deps="decklink threads"
3067 decklink_indev_extralibs="-lstdc++"
3068 decklink_outdev_deps="decklink threads"
3069 decklink_outdev_extralibs="-lstdc++"
3070 libndi_newtek_indev_deps="libndi_newtek"
3071 libndi_newtek_indev_extralibs="-lndi"
3072 libndi_newtek_outdev_deps="libndi_newtek"
3073 libndi_newtek_outdev_extralibs="-lndi"
3074 dshow_indev_deps="IBaseFilter"
3075 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3076 fbdev_indev_deps="linux_fb_h"
3077 fbdev_outdev_deps="linux_fb_h"
3078 gdigrab_indev_deps="CreateDIBSection"
3079 gdigrab_indev_extralibs="-lgdi32"
3080 gdigrab_indev_select="bmp_decoder"
3081 iec61883_indev_deps="libiec61883"
3082 jack_indev_deps="libjack"
3083 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3084 kmsgrab_indev_deps="libdrm"
3085 lavfi_indev_deps="avfilter"
3086 libcdio_indev_deps="libcdio"
3087 libdc1394_indev_deps="libdc1394"
3088 openal_indev_deps="openal"
3089 opengl_outdev_deps="opengl"
3090 oss_indev_deps_any="sys_soundcard_h"
3091 oss_outdev_deps_any="sys_soundcard_h"
3092 pulse_indev_deps="libpulse"
3093 pulse_outdev_deps="libpulse"
3094 sdl2_outdev_deps="sdl2"
3095 sndio_indev_deps="sndio"
3096 sndio_outdev_deps="sndio"
3097 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3098 v4l2_indev_suggest="libv4l2"
3099 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3100 v4l2_outdev_suggest="libv4l2"
3101 vfwcap_indev_deps="vfw32 vfwcap_defines"
3102 xcbgrab_indev_deps="libxcb"
3103 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3104 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3105 xv_outdev_extralibs="-lXv -lX11 -lXext"
3106
3107 # protocols
3108 async_protocol_deps="threads"
3109 bluray_protocol_deps="libbluray"
3110 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3111 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3112 ffrtmpcrypt_protocol_select="tcp_protocol"
3113 ffrtmphttp_protocol_conflict="librtmp_protocol"
3114 ffrtmphttp_protocol_select="http_protocol"
3115 ftp_protocol_select="tcp_protocol"
3116 gopher_protocol_select="network"
3117 http_protocol_select="tcp_protocol"
3118 http_protocol_suggest="zlib"
3119 httpproxy_protocol_select="tcp_protocol"
3120 httpproxy_protocol_suggest="zlib"
3121 https_protocol_select="tls_protocol"
3122 https_protocol_suggest="zlib"
3123 icecast_protocol_select="http_protocol"
3124 librtmp_protocol_deps="librtmp"
3125 librtmpe_protocol_deps="librtmp"
3126 librtmps_protocol_deps="librtmp"
3127 librtmpt_protocol_deps="librtmp"
3128 librtmpte_protocol_deps="librtmp"
3129 libsmbclient_protocol_deps="libsmbclient gplv3"
3130 libssh_protocol_deps="libssh"
3131 mmsh_protocol_select="http_protocol"
3132 mmst_protocol_select="network"
3133 rtmp_protocol_conflict="librtmp_protocol"
3134 rtmp_protocol_select="tcp_protocol"
3135 rtmp_protocol_suggest="zlib"
3136 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3137 rtmpe_protocol_suggest="zlib"
3138 rtmps_protocol_conflict="librtmp_protocol"
3139 rtmps_protocol_select="tls_protocol"
3140 rtmps_protocol_suggest="zlib"
3141 rtmpt_protocol_select="ffrtmphttp_protocol"
3142 rtmpt_protocol_suggest="zlib"
3143 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3144 rtmpte_protocol_suggest="zlib"
3145 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3146 rtmpts_protocol_suggest="zlib"
3147 rtp_protocol_select="udp_protocol"
3148 schannel_conflict="openssl gnutls"
3149 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3150 sctp_protocol_select="network"
3151 securetransport_conflict="openssl gnutls"
3152 srtp_protocol_select="rtp_protocol srtp"
3153 tcp_protocol_select="network"
3154 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3155 tls_protocol_select="tcp_protocol"
3156 udp_protocol_select="network"
3157 udplite_protocol_select="network"
3158 unix_protocol_deps="sys_un_h"
3159 unix_protocol_select="network"
3160
3161 # filters
3162 afftfilt_filter_deps="avcodec"
3163 afftfilt_filter_select="fft"
3164 afir_filter_deps="avcodec"
3165 afir_filter_select="fft"
3166 amovie_filter_deps="avcodec avformat"
3167 aresample_filter_deps="swresample"
3168 ass_filter_deps="libass"
3169 atempo_filter_deps="avcodec"
3170 atempo_filter_select="rdft"
3171 azmq_filter_deps="libzmq"
3172 blackframe_filter_deps="gpl"
3173 boxblur_filter_deps="gpl"
3174 bs2b_filter_deps="libbs2b"
3175 colormatrix_filter_deps="gpl"
3176 coreimage_filter_deps="coreimage appkit"
3177 coreimage_filter_extralibs="-framework OpenGL"
3178 coreimagesrc_filter_deps="coreimage appkit"
3179 coreimagesrc_filter_extralibs="-framework OpenGL"
3180 cover_rect_filter_deps="avcodec avformat gpl"
3181 cropdetect_filter_deps="gpl"
3182 deinterlace_qsv_filter_deps="libmfx"
3183 deinterlace_vaapi_filter_deps="vaapi"
3184 delogo_filter_deps="gpl"
3185 deshake_filter_select="pixelutils"
3186 deshake_filter_suggest="opencl"
3187 drawtext_filter_deps="libfreetype"
3188 drawtext_filter_suggest="libfontconfig libfribidi"
3189 elbg_filter_deps="avcodec"
3190 eq_filter_deps="gpl"
3191 fftfilt_filter_deps="avcodec"
3192 fftfilt_filter_select="rdft"
3193 find_rect_filter_deps="avcodec avformat gpl"
3194 firequalizer_filter_deps="avcodec"
3195 firequalizer_filter_select="rdft"
3196 flite_filter_deps="libflite"
3197 framerate_filter_select="pixelutils"
3198 frei0r_filter_deps="frei0r libdl"
3199 frei0r_src_filter_deps="frei0r libdl"
3200 fspp_filter_deps="gpl"
3201 geq_filter_deps="gpl"
3202 histeq_filter_deps="gpl"
3203 hqdn3d_filter_deps="gpl"
3204 interlace_filter_deps="gpl"
3205 kerndeint_filter_deps="gpl"
3206 ladspa_filter_deps="ladspa libdl"
3207 mcdeint_filter_deps="avcodec gpl"
3208 movie_filter_deps="avcodec avformat"
3209 mpdecimate_filter_deps="gpl"
3210 mpdecimate_filter_select="pixelutils"
3211 mptestsrc_filter_deps="gpl"
3212 negate_filter_deps="lut_filter"
3213 nnedi_filter_deps="gpl"
3214 ocr_filter_deps="libtesseract"
3215 ocv_filter_deps="libopencv"
3216 overlay_qsv_filter_deps="libmfx"
3217 overlay_qsv_filter_select="qsvvpp"
3218 owdenoise_filter_deps="gpl"
3219 pan_filter_deps="swresample"
3220 perspective_filter_deps="gpl"
3221 phase_filter_deps="gpl"
3222 pp7_filter_deps="gpl"
3223 pp_filter_deps="gpl postproc"
3224 pullup_filter_deps="gpl"
3225 removelogo_filter_deps="avcodec avformat swscale"
3226 repeatfields_filter_deps="gpl"
3227 resample_filter_deps="avresample"
3228 rubberband_filter_deps="librubberband"
3229 sab_filter_deps="gpl swscale"
3230 scale2ref_filter_deps="swscale"
3231 scale_filter_deps="swscale"
3232 scale_qsv_filter_deps="libmfx"
3233 select_filter_select="pixelutils"
3234 showcqt_filter_deps="avcodec avformat swscale"
3235 showcqt_filter_suggest="libfontconfig libfreetype"
3236 showcqt_filter_select="fft"
3237 showfreqs_filter_deps="avcodec"
3238 showfreqs_filter_select="fft"
3239 showspectrum_filter_deps="avcodec"
3240 showspectrum_filter_select="fft"
3241 showspectrumpic_filter_deps="avcodec"
3242 showspectrumpic_filter_select="fft"
3243 signature_filter_deps="gpl avcodec avformat"
3244 smartblur_filter_deps="gpl swscale"
3245 sofalizer_filter_deps="libmysofa avcodec"
3246 sofalizer_filter_select="fft"
3247 spectrumsynth_filter_deps="avcodec"
3248 spectrumsynth_filter_select="fft"
3249 spp_filter_deps="gpl avcodec"
3250 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3251 stereo3d_filter_deps="gpl"
3252 subtitles_filter_deps="avformat avcodec libass"
3253 super2xsai_filter_deps="gpl"
3254 pixfmts_super2xsai_test_deps="super2xsai_filter"
3255 tinterlace_filter_deps="gpl"
3256 tinterlace_merge_test_deps="tinterlace_filter"
3257 tinterlace_pad_test_deps="tinterlace_filter"
3258 tonemap_filter_deps="const_nan"
3259 uspp_filter_deps="gpl avcodec"
3260 unsharp_filter_suggest="opencl"
3261 vaguedenoiser_filter_deps="gpl"
3262 vidstabdetect_filter_deps="libvidstab"
3263 vidstabtransform_filter_deps="libvidstab"
3264 libvmaf_filter_deps="libvmaf"
3265 zmq_filter_deps="libzmq"
3266 zoompan_filter_deps="swscale"
3267 zscale_filter_deps="libzimg const_nan"
3268 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3269 vpp_qsv_filter_deps="libmfx"
3270 vpp_qsv_filter_select="qsvvpp"
3271
3272 # examples
3273 avio_dir_cmd_deps="avformat avutil"
3274 avio_reading_deps="avformat avcodec avutil"
3275 decode_audio_example_deps="avcodec avutil"
3276 decode_video_example_deps="avcodec avutil"
3277 demuxing_decoding_example_deps="avcodec avformat avutil"
3278 encode_audio_example_deps="avcodec avutil"
3279 encode_video_example_deps="avcodec avutil"
3280 extract_mvs_example_deps="avcodec avformat avutil"
3281 filter_audio_example_deps="avfilter avutil"
3282 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3283 filtering_video_example_deps="avfilter avcodec avformat avutil"
3284 http_multiclient_example_deps="avformat avutil fork"
3285 hw_decode_example_deps="avcodec avformat avutil"
3286 metadata_example_deps="avformat avutil"
3287 muxing_example_deps="avcodec avformat avutil swscale"
3288 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3289 remuxing_example_deps="avcodec avformat avutil"
3290 resampling_audio_example_deps="avutil swresample"
3291 scaling_video_example_deps="avutil swscale"
3292 transcode_aac_example_deps="avcodec avformat swresample"
3293 transcoding_example_deps="avfilter avcodec avformat avutil"
3294
3295 # EXTRALIBS_LIST
3296 cpu_init_extralibs="pthreads_extralibs"
3297 cws2fws_extralibs="zlib_extralibs"
3298
3299 # libraries, in linking order
3300 avcodec_deps="avutil"
3301 avcodec_suggest="libm"
3302 avcodec_select="null_bsf"
3303 avdevice_deps="avformat avcodec avutil"
3304 avdevice_suggest="libm"
3305 avfilter_deps="avutil"
3306 avfilter_suggest="libm"
3307 avformat_deps="avcodec avutil"
3308 avformat_suggest="libm network zlib"
3309 avresample_deps="avutil"
3310 avresample_suggest="libm"
3311 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3312 postproc_deps="avutil gpl"
3313 postproc_suggest="libm"
3314 swresample_deps="avutil"
3315 swresample_suggest="libm libsoxr"
3316 swscale_deps="avutil"
3317 swscale_suggest="libm"
3318
3319 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3320 avfilter_extralibs="pthreads_extralibs"
3321 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3322
3323 # programs
3324 ffmpeg_deps="avcodec avfilter avformat swresample"
3325 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3326                null_filter
3327                trim_filter"
3328 ffmpeg_suggest="ole32 psapi shell32"
3329 ffplay_deps="avcodec avformat swscale swresample sdl2"
3330 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3331 ffplay_suggest="shell32"
3332 ffprobe_deps="avcodec avformat"
3333 ffprobe_suggest="shell32"
3334 ffserver_deps="avformat fork sarestart"
3335 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3336
3337 # documentation
3338 podpages_deps="perl"
3339 manpages_deps="perl pod2man"
3340 htmlpages_deps="perl"
3341 htmlpages_deps_any="makeinfo_html texi2html"
3342 txtpages_deps="perl makeinfo"
3343 doc_deps_any="manpages htmlpages podpages txtpages"
3344
3345 # default parameters
3346
3347 logfile="ffbuild/config.log"
3348
3349 # installation paths
3350 prefix_default="/usr/local"
3351 bindir_default='${prefix}/bin'
3352 datadir_default='${prefix}/share/ffmpeg'
3353 docdir_default='${prefix}/share/doc/ffmpeg'
3354 incdir_default='${prefix}/include'
3355 libdir_default='${prefix}/lib'
3356 mandir_default='${prefix}/share/man'
3357
3358 # toolchain
3359 ar_default="ar"
3360 cc_default="gcc"
3361 cxx_default="g++"
3362 host_cc_default="gcc"
3363 doxygen_default="doxygen"
3364 install="install"
3365 ln_s_default="ln -s -f"
3366 nm_default="nm -g"
3367 pkg_config_default=pkg-config
3368 ranlib_default="ranlib"
3369 strip_default="strip"
3370 version_script='--version-script'
3371 x86asmexe_default="nasm"
3372 windres_default="windres"
3373 nvcc_default="nvcc"
3374 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3375 striptype="direct"
3376
3377 # OS
3378 target_os_default=$(tolower $(uname -s))
3379 host_os=$target_os_default
3380
3381 # machine
3382 if test "$target_os_default" = aix; then
3383     arch_default=$(uname -p)
3384     strip_default="strip -X32_64"
3385 else
3386     arch_default=$(uname -m)
3387 fi
3388 cpu="generic"
3389 intrinsics="none"
3390
3391 # configurable options
3392 enable $PROGRAM_LIST
3393 enable $DOCUMENT_LIST
3394 enable $EXAMPLE_LIST
3395 enable $(filter_out avresample $LIBRARY_LIST)
3396 enable stripping
3397
3398 enable asm
3399 enable debug
3400 enable doc
3401 enable faan faandct faanidct
3402 enable optimizations
3403 enable runtime_cpudetect
3404 enable safe_bitstream_reader
3405 enable static
3406 enable swscale_alpha
3407 enable valgrind_backtrace
3408
3409 sws_max_filter_size_default=256
3410 set_default sws_max_filter_size
3411
3412 # internal components are enabled by default
3413 enable $EXTRALIBS_LIST
3414
3415 # Avoid external, non-system, libraries getting enabled by dependency resolution
3416 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3417
3418 # build settings
3419 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3420 LIBPREF="lib"
3421 LIBSUF=".a"
3422 FULLNAME='$(NAME)$(BUILDSUF)'
3423 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3424 SLIBPREF="lib"
3425 SLIBSUF=".so"
3426 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3427 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3428 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3429 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3430 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3431 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3432 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3433
3434 asflags_filter=echo
3435 cflags_filter=echo
3436 ldflags_filter=echo
3437
3438 AS_C='-c'
3439 AS_O='-o $@'
3440 CC_C='-c'
3441 CC_E='-E -o $@'
3442 CC_O='-o $@'
3443 CXX_C='-c'
3444 CXX_O='-o $@'
3445 OBJCC_C='-c'
3446 OBJCC_E='-E -o $@'
3447 OBJCC_O='-o $@'
3448 X86ASM_O='-o $@'
3449 LD_O='-o $@'
3450 LD_LIB='-l%'
3451 LD_PATH='-L'
3452 HOSTCC_C='-c'
3453 HOSTCC_E='-E -o $@'
3454 HOSTCC_O='-o $@'
3455 HOSTLD_O='-o $@'
3456 NVCC_C='-c'
3457 NVCC_O='-o $@'
3458
3459 host_extralibs='-lm'
3460 host_cflags_filter=echo
3461 host_ldflags_filter=echo
3462
3463 target_path='$(CURDIR)'
3464
3465 # since the object filename is not given with the -MM flag, the compiler
3466 # is only able to print the basename, and we must add the path ourselves
3467 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3468 DEPFLAGS='-MM'
3469
3470 mkdir -p ffbuild
3471
3472 # find source path
3473 if test -f configure; then
3474     source_path=.
3475 else
3476     source_path=$(cd $(dirname "$0"); pwd)
3477     case "$source_path" in
3478         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3479     esac
3480     test -e "$source_path/config.h" &&
3481         die "Out of tree builds are impossible with config.h in source dir."
3482 fi
3483
3484 for v in "$@"; do
3485     r=${v#*=}
3486     l=${v%"$r"}
3487     r=$(sh_quote "$r")
3488     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3489 done
3490
3491 find_things(){
3492     thing=$1
3493     pattern=$2
3494     file=$source_path/$3
3495     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3496 }
3497
3498 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3499 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3500 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3501 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3502 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3503 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3504 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3505 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3506 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3507
3508 find_things_extern(){
3509     thing=$1
3510     pattern=$2
3511     file=$source_path/$3
3512     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3513 }
3514
3515 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3516 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3517
3518 AVCODEC_COMPONENTS_LIST="
3519     $BSF_LIST
3520     $DECODER_LIST
3521     $ENCODER_LIST
3522     $HWACCEL_LIST
3523     $PARSER_LIST
3524 "
3525
3526 AVDEVICE_COMPONENTS_LIST="
3527     $INDEV_LIST
3528     $OUTDEV_LIST
3529 "
3530
3531 AVFILTER_COMPONENTS_LIST="
3532     $FILTER_LIST
3533 "
3534
3535 AVFORMAT_COMPONENTS_LIST="
3536     $DEMUXER_LIST
3537     $MUXER_LIST
3538     $PROTOCOL_LIST
3539 "
3540
3541 ALL_COMPONENTS="
3542     $AVCODEC_COMPONENTS_LIST
3543     $AVDEVICE_COMPONENTS_LIST
3544     $AVFILTER_COMPONENTS_LIST
3545     $AVFORMAT_COMPONENTS_LIST
3546 "
3547
3548 for n in $COMPONENT_LIST; do
3549     v=$(toupper ${n%s})_LIST
3550     eval enable \$$v
3551     eval ${n}_if_any="\$$v"
3552 done
3553
3554 enable $ARCH_EXT_LIST
3555
3556 die_unknown(){
3557     echo "Unknown option \"$1\"."
3558     echo "See $0 --help for available options."
3559     exit 1
3560 }
3561
3562 print_in_columns() {
3563     cols=$(expr $ncols / 24)
3564     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3565 }
3566
3567 show_list() {
3568     suffix=_$1
3569     shift
3570     echo $* | sed s/$suffix//g | print_in_columns
3571     exit 0
3572 }
3573
3574 rand_list(){
3575     IFS=', '
3576     set -- $*
3577     unset IFS
3578     for thing; do
3579         comp=${thing%:*}
3580         prob=${thing#$comp}
3581         prob=${prob#:}
3582         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3583         echo "prob ${prob:-0.5}"
3584         printf '%s\n' $comp
3585     done
3586 }
3587
3588 do_random(){
3589     action=$1
3590     shift
3591     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3592     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3593 }
3594
3595 for opt do
3596     optval="${opt#*=}"
3597     case "$opt" in
3598         --extra-ldflags=*)
3599             add_ldflags $optval
3600         ;;
3601         --extra-ldexeflags=*)
3602             add_ldexeflags $optval
3603         ;;
3604         --extra-ldsoflags=*)
3605             add_ldsoflags $optval
3606         ;;
3607         --extra-ldlibflags=*)
3608             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3609                  "removed in the future. Use --extra-ldsoflags instead."
3610             add_ldsoflags $optval
3611         ;;
3612         --extra-libs=*)
3613             add_extralibs $optval
3614         ;;
3615         --disable-devices)
3616             disable $INDEV_LIST $OUTDEV_LIST
3617         ;;
3618         --enable-debug=*)
3619             debuglevel="$optval"
3620         ;;
3621         --disable-programs)
3622             disable $PROGRAM_LIST
3623         ;;
3624         --disable-everything)
3625             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3626         ;;
3627         --disable-all)
3628             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3629             disable $LIBRARY_LIST $PROGRAM_LIST doc
3630             enable avutil
3631         ;;
3632         --enable-random|--disable-random)
3633             action=${opt%%-random}
3634             do_random ${action#--} $COMPONENT_LIST
3635         ;;
3636         --enable-random=*|--disable-random=*)
3637             action=${opt%%-random=*}
3638             do_random ${action#--} $optval
3639         ;;
3640         --enable-sdl)
3641             enable sdl2
3642         ;;
3643         --enable-*=*|--disable-*=*)
3644             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3645             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3646             eval list=\$$(toupper $thing)_LIST
3647             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3648             list=$(filter "$name" $list)
3649             [ "$list" = "" ] && warn "Option $opt did not match anything"
3650             $action $list
3651         ;;
3652         --enable-yasm|--disable-yasm)
3653             warn "The ${opt} option is only provided for compatibility and will be\n"\
3654                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3655             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3656         ;;
3657         --yasmexe=*)
3658             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3659                  "removed in the future. Use --x86asmexe instead."
3660             x86asmexe="$optval"
3661         ;;
3662         --enable-?*|--disable-?*)
3663             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3664             if is_in $option $COMPONENT_LIST; then
3665                 test $action = disable && action=unset
3666                 eval $action \$$(toupper ${option%s})_LIST
3667             elif is_in $option $CMDLINE_SELECT; then
3668                 $action $option
3669             else
3670                 die_unknown $opt
3671             fi
3672         ;;
3673         --list-*)
3674             NAME="${opt#--list-}"
3675             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3676             NAME=${NAME%s}
3677             eval show_list $NAME \$$(toupper $NAME)_LIST
3678         ;;
3679         --help|-h) show_help
3680         ;;
3681         --quiet|-q) quiet=yes
3682         ;;
3683         --fatal-warnings) enable fatal_warnings
3684         ;;
3685         --libfuzzer=*)
3686             libfuzzer_path="$optval"
3687         ;;
3688         *)
3689             optname="${opt%%=*}"
3690             optname="${optname#--}"
3691             optname=$(echo "$optname" | sed 's/-/_/g')
3692             if is_in $optname $CMDLINE_SET; then
3693                 eval $optname='$optval'
3694             elif is_in $optname $CMDLINE_APPEND; then
3695                 append $optname "$optval"
3696             else
3697                 die_unknown $opt
3698             fi
3699         ;;
3700     esac
3701 done
3702
3703 for e in $env; do
3704     eval "export $e"
3705 done
3706
3707 if disabled autodetect; then
3708
3709     # Unless iconv is explicitely disabled by the user, we still want to probe
3710     # for the iconv from the libc.
3711     disabled iconv || enable libc_iconv
3712
3713     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3714     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3715 fi
3716 # Mark specifically enabled, but normally autodetected libraries as requested.
3717 for lib in $AUTODETECT_LIBS; do
3718     enabled $lib && request $lib
3719 done
3720 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3721 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3722 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3723
3724 disabled logging && logfile=/dev/null
3725
3726 die_license_disabled() {
3727     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3728 }
3729
3730 die_license_disabled_gpl() {
3731     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3732 }
3733
3734 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3735 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3736
3737 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3738 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3739
3740 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3741
3742 enabled_all gnutls openssl &&
3743     die "GnuTLS and OpenSSL must not be enabled at the same time."
3744
3745 # Disable all the library-specific components if the library itself
3746 # is disabled, see AVCODEC_LIST and following _LIST variables.
3747
3748 disable_components(){
3749     disabled ${1} && disable $(
3750         eval components="\$$(toupper ${1})_COMPONENTS"
3751         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3752     )
3753 }
3754
3755 map 'disable_components $v' $LIBRARY_LIST
3756
3757 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3758 set >> $logfile
3759
3760 test -n "$valgrind" && toolchain="valgrind-memcheck"
3761
3762 enabled ossfuzz && {
3763     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3764     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3765 }
3766
3767 case "$toolchain" in
3768     *-asan)
3769         cc_default="${toolchain%-asan}"
3770         add_cflags  -fsanitize=address
3771         add_ldflags -fsanitize=address
3772     ;;
3773     *-msan)
3774         cc_default="${toolchain%-msan}"
3775         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3776         add_ldflags -fsanitize=memory
3777     ;;
3778     *-tsan)
3779         cc_default="${toolchain%-tsan}"
3780         add_cflags  -fsanitize=thread -fPIE
3781         add_ldflags -fsanitize=thread -pie
3782         case "$toolchain" in
3783             gcc-tsan)
3784                 add_cflags  -fPIC
3785                 add_ldflags -fPIC
3786                 ;;
3787         esac
3788     ;;
3789     *-usan)
3790         cc_default="${toolchain%-usan}"
3791         add_cflags  -fsanitize=undefined
3792         add_ldflags -fsanitize=undefined
3793     ;;
3794     valgrind-*)
3795         target_exec_default="valgrind"
3796         case "$toolchain" in
3797             valgrind-massif)
3798                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3799                 ;;
3800             valgrind-memcheck)
3801                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3802                 ;;
3803         esac
3804     ;;
3805     msvc)
3806         # Check whether the current MSVC version needs the C99 converter.
3807         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3808         # support enough of C99 to build ffmpeg. Default to the new
3809         # behaviour if the regexp was unable to match anything, since this
3810         # successfully parses the version number of existing supported
3811         # versions that require the converter (MSVC 2010 and 2012).
3812         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3813         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3814             cc_default="cl"
3815             cxx_default="cl"
3816         else
3817             cc_default="c99wrap cl"
3818             cxx_default="c99wrap cl"
3819         fi
3820         ld_default="$source_path/compat/windows/mslink"
3821         nm_default="dumpbin -symbols"
3822         ar_default="lib"
3823         case "$arch" in
3824         aarch64|arm64)
3825             as_default="armasm64"
3826             ;;
3827         arm*)
3828             as_default="armasm"
3829             ;;
3830         esac
3831         target_os_default="win32"
3832         # Use a relative path for TMPDIR. This makes sure all the
3833         # ffconf temp files are written with a relative path, avoiding
3834         # issues with msys/win32 path conversion for MSVC parameters
3835         # such as -Fo<file> or -out:<file>.
3836         TMPDIR=.
3837     ;;
3838     icl)
3839         cc_default="icl"
3840         ld_default="xilink"
3841         nm_default="dumpbin -symbols"
3842         ar_default="xilib"
3843         target_os_default="win32"
3844         TMPDIR=.
3845     ;;
3846     gcov)
3847         add_cflags  -fprofile-arcs -ftest-coverage
3848         add_ldflags -fprofile-arcs -ftest-coverage
3849     ;;
3850     llvm-cov)
3851         add_cflags -fprofile-arcs -ftest-coverage
3852         add_ldflags --coverage
3853     ;;
3854     hardened)
3855         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3856         add_cflags   -fno-strict-overflow -fstack-protector-all
3857         add_ldflags  -Wl,-z,relro -Wl,-z,now
3858         add_cflags   -fPIE
3859         add_ldexeflags -fPIE -pie
3860     ;;
3861     ?*)
3862         die "Unknown toolchain $toolchain"
3863     ;;
3864 esac
3865
3866 test -n "$cross_prefix" && enable cross_compile
3867
3868 if enabled cross_compile; then
3869     test -n "$arch" && test -n "$target_os" ||
3870         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3871 fi
3872
3873 ar_default="${cross_prefix}${ar_default}"
3874 cc_default="${cross_prefix}${cc_default}"
3875 cxx_default="${cross_prefix}${cxx_default}"
3876 nm_default="${cross_prefix}${nm_default}"
3877 pkg_config_default="${cross_prefix}${pkg_config_default}"
3878 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3879     ranlib_default="${cross_prefix}${ranlib_default} -D"
3880 else
3881     ranlib_default="${cross_prefix}${ranlib_default}"
3882 fi
3883 strip_default="${cross_prefix}${strip_default}"
3884 windres_default="${cross_prefix}${windres_default}"
3885
3886 sysinclude_default="${sysroot}/usr/include"
3887
3888 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3889     target_exec target_os x86asmexe nvcc
3890 enabled cross_compile || host_cc_default=$cc
3891 set_default host_cc
3892
3893 pkg_config_fail_message=""
3894 if ! $pkg_config --version >/dev/null 2>&1; then
3895     warn "$pkg_config not found, library detection may fail."
3896     pkg_config=false
3897 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3898     pkg_config_fail_message="
3899 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3900 fi
3901
3902 if test $doxygen != $doxygen_default && \
3903   ! $doxygen --version >/dev/null 2>&1; then
3904     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3905 fi
3906
3907 exesuf() {
3908     case $1 in
3909         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3910     esac
3911 }
3912
3913 EXESUF=$(exesuf $target_os)
3914 HOSTEXESUF=$(exesuf $host_os)
3915
3916 # set temporary file name
3917 : ${TMPDIR:=$TEMPDIR}
3918 : ${TMPDIR:=$TMP}
3919 : ${TMPDIR:=/tmp}
3920
3921 if [ -n "$tempprefix" ] ; then
3922     mktemp(){
3923         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3924         echo "$tmpname"
3925         mkdir "$tmpname"
3926     }
3927 elif ! check_cmd mktemp -u XXXXXX; then
3928     # simple replacement for missing mktemp
3929     # NOT SAFE FOR GENERAL USE
3930     mktemp(){
3931         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3932         echo "$tmpname"
3933         mkdir "$tmpname"
3934     }
3935 fi
3936
3937 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3938     die "Unable to create temporary directory in $TMPDIR."
3939
3940 tmpfile(){
3941     tmp="${FFTMPDIR}/test"$2
3942     (set -C; exec > $tmp) 2> /dev/null ||
3943         die "Unable to create temporary file in $FFTMPDIR."
3944     eval $1=$tmp
3945 }
3946
3947 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3948 trap 'exit 2' INT
3949
3950 tmpfile TMPASM .asm
3951 tmpfile TMPC   .c
3952 tmpfile TMPCPP .cpp
3953 tmpfile TMPE   $EXESUF
3954 tmpfile TMPH   .h
3955 tmpfile TMPM   .m
3956 tmpfile TMPO   .o
3957 tmpfile TMPS   .S
3958 tmpfile TMPSH  .sh
3959 tmpfile TMPV   .ver
3960
3961 unset -f mktemp
3962
3963 chmod +x $TMPE
3964
3965 # make sure we can execute files in $TMPDIR
3966 cat > $TMPSH 2>> $logfile <<EOF
3967 #! /bin/sh
3968 EOF
3969 chmod +x $TMPSH >> $logfile 2>&1
3970 if ! $TMPSH >> $logfile 2>&1; then
3971     cat <<EOF
3972 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3973 variable to another directory and make sure that it is not mounted noexec.
3974 EOF
3975     die "Sanity test failed."
3976 fi
3977
3978 armasm_flags(){
3979     for flag; do
3980         case $flag in
3981             # Filter out MSVC cl.exe options from cflags that shouldn't
3982             # be passed to gas-preprocessor
3983             -M[TD]*)                                            ;;
3984             *)                  echo $flag                      ;;
3985         esac
3986    done
3987 }
3988
3989 cparser_flags(){
3990     for flag; do
3991         case $flag in
3992             -Wno-switch)             echo -Wno-switch-enum ;;
3993             -Wno-format-zero-length) ;;
3994             -Wdisabled-optimization) ;;
3995             -Wno-pointer-sign)       echo -Wno-other ;;
3996             *)                       echo $flag ;;
3997         esac
3998     done
3999 }
4000
4001 msvc_common_flags(){
4002     for flag; do
4003         case $flag in
4004             # In addition to specifying certain flags under the compiler
4005             # specific filters, they must be specified here as well or else the
4006             # generic catch all at the bottom will print the original flag.
4007             -Wall)                ;;
4008             -Wextra)              ;;
4009             -std=c99)             ;;
4010             # Common flags
4011             -fomit-frame-pointer) ;;
4012             -g)                   echo -Z7 ;;
4013             -fno-math-errno)      ;;
4014             -fno-common)          ;;
4015             -fno-signed-zeros)    ;;
4016             -fPIC)                ;;
4017             -mthumb)              ;;
4018             -march=*)             ;;
4019             -lz)                  echo zlib.lib ;;
4020             -lx264)               echo libx264.lib ;;
4021             -lstdc++)             ;;
4022             -l*)                  echo ${flag#-l}.lib ;;
4023             -LARGEADDRESSAWARE)   echo $flag ;;
4024             -L*)                  echo -libpath:${flag#-L} ;;
4025             *)                    echo $flag ;;
4026         esac
4027     done
4028 }
4029
4030 msvc_flags(){
4031     msvc_common_flags "$@"
4032     for flag; do
4033         case $flag in
4034             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4035                                        -wd4554 ;;
4036             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4037                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4038                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4039                                        -wd4307 \
4040                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4041         esac
4042     done
4043 }
4044
4045 icl_flags(){
4046     msvc_common_flags "$@"
4047     for flag; do
4048         case $flag in
4049             # Despite what Intel's documentation says -Wall, which is supported
4050             # on Windows, does enable remarks so disable them here.
4051             -Wall)                echo $flag -Qdiag-disable:remark ;;
4052             -std=c99)             echo -Qstd=c99 ;;
4053             -flto)                echo -ipo ;;
4054         esac
4055     done
4056 }
4057
4058 icc_flags(){
4059     for flag; do
4060         case $flag in
4061             -flto)                echo -ipo ;;
4062             *)                    echo $flag ;;
4063         esac
4064     done
4065 }
4066
4067 pgi_flags(){
4068     for flag; do
4069         case $flag in
4070             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4071             -fomit-frame-pointer) echo -Mnoframe ;;
4072             -g)                   echo -gopt ;;
4073             *)                    echo $flag ;;
4074         esac
4075     done
4076 }
4077
4078 suncc_flags(){
4079     for flag; do
4080         case $flag in
4081             -march=*|-mcpu=*)
4082                 case "${flag#*=}" in
4083                     native)                   echo -xtarget=native       ;;
4084                     v9|niagara)               echo -xarch=sparc          ;;
4085                     ultrasparc)               echo -xarch=sparcvis       ;;
4086                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4087                     i586|pentium)             echo -xchip=pentium        ;;
4088                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4089                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4090                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4091                     pentium4*)          echo -xtarget=pentium4           ;;
4092                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4093                     *-sse3)             echo -xarch=sse3                 ;;
4094                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4095                     bonnell)                   echo -xarch=ssse3         ;;
4096                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4097                     westmere)                  echo -xtarget=westmere    ;;
4098                     silvermont)                echo -xarch=sse4_2        ;;
4099                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4100                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4101                                                echo -xarch=avx           ;;
4102                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4103                     btver1)                    echo -xarch=amdsse4a      ;;
4104                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4105                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4106                     k8|opteron|athlon64|athlon-fx)
4107                                                echo -xarch=sse2a         ;;
4108                     athlon*)                   echo -xarch=pentium_proa  ;;
4109                 esac
4110                 ;;
4111             -std=c99)             echo -xc99              ;;
4112             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4113             -fPIC)                echo -KPIC -xcode=pic32 ;;
4114             -W*,*)                echo $flag              ;;
4115             -f*-*|-W*|-mimpure-text)                      ;;
4116             -shared)              echo -G                 ;;
4117             *)                    echo $flag              ;;
4118         esac
4119     done
4120 }
4121
4122 tms470_flags(){
4123     for flag; do
4124         case $flag in
4125             -march=*|-mcpu=*)
4126                 case "${flag#*=}" in
4127                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4128                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4129                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4130                     armv6*|arm11*)          echo -mv=6   ;;
4131                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4132                                             echo -mv=5e  ;;
4133                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4134                 esac
4135                 ;;
4136             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4137             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4138             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4139             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4140             -msoft-float)   echo --float_support=vfplib       ;;
4141             -O[0-3]|-mf=*)  echo $flag                        ;;
4142             -g)             echo -g -mn                       ;;
4143             -pds=*)         echo $flag                        ;;
4144             -D*|-I*)        echo $flag                        ;;
4145             --gcc|--abi=*)  echo $flag                        ;;
4146             -me)            echo $flag                        ;;
4147         esac
4148     done
4149 }
4150
4151 probe_cc(){
4152     pfx=$1
4153     _cc=$2
4154     first=$3
4155
4156     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4157     unset _ld_o _ldflags _ld_lib _ld_path
4158     unset _depflags _DEPCMD _DEPFLAGS
4159     _flags_filter=echo
4160
4161     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4162         true # no-op to avoid reading stdin in following checks
4163     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4164         _type=llvm_gcc
4165         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4166         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4167         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4168         _cflags_speed='-O3'
4169         _cflags_size='-Os'
4170     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4171         _type=gcc
4172         gcc_version=$($_cc --version | head -n1)
4173         gcc_basever=$($_cc -dumpversion)
4174         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4175         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4176         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4177         case $gcc_basever in
4178             2) ;;
4179             2.*) ;;
4180             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4181         esac
4182         if [ "$first" = true ]; then
4183             case $gcc_basever in
4184                 4.2*)
4185                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4186             esac
4187         fi
4188         _cflags_speed='-O3'
4189         _cflags_size='-Os'
4190     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4191         _type=icc
4192         _ident=$($_cc --version | head -n1)
4193         _depflags='-MMD'
4194         _cflags_speed='-O3'
4195         _cflags_size='-Os'
4196         _cflags_noopt='-O1'
4197         _flags_filter=icc_flags
4198     elif $_cc -v 2>&1 | grep -q xlc; then
4199         _type=xlc
4200         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4201         _cflags_speed='-O5'
4202         _cflags_size='-O5 -qcompact'
4203     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4204         test -d "$sysroot" || die "No valid sysroot specified."
4205         _type=armcc
4206         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4207         armcc_conf="$PWD/armcc.conf"
4208         $_cc --arm_linux_configure                 \
4209              --arm_linux_config_file="$armcc_conf" \
4210              --configure_sysroot="$sysroot"        \
4211              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4212              die "Error creating armcc configuration file."
4213         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4214         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4215         as_default="${cross_prefix}gcc"
4216         _depflags='-MMD'
4217         _cflags_speed='-O3'
4218         _cflags_size='-Os'
4219     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4220         _type=tms470
4221         _ident=$($_cc -version | head -n1 | tr -s ' ')
4222         _flags='--gcc --abi=eabi -me'
4223         _cc_e='-ppl -fe=$@'
4224         _cc_o='-fe=$@'
4225         _depflags='-ppa -ppd=$(@:.o=.d)'
4226         _cflags_speed='-O3 -mf=5'
4227         _cflags_size='-O3 -mf=2'
4228         _flags_filter=tms470_flags
4229     elif $_cc -v 2>&1 | grep -q clang; then
4230         _type=clang
4231         _ident=$($_cc --version 2>/dev/null | head -n1)
4232         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4233         _cflags_speed='-O3'
4234         _cflags_size='-Oz'
4235     elif $_cc -V 2>&1 | grep -q Sun; then
4236         _type=suncc
4237         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4238         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4239         _DEPFLAGS='-xM1 -xc99'
4240         _ldflags='-std=c99'
4241         _cflags_speed='-O5'
4242         _cflags_size='-O5 -xspace'
4243         _flags_filter=suncc_flags
4244     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4245         _type=pathscale
4246         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4247         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4248         _cflags_speed='-O2'
4249         _cflags_size='-Os'
4250         _flags_filter='filter_out -Wdisabled-optimization'
4251     elif $_cc -v 2>&1 | grep -q Open64; then
4252         _type=open64
4253         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4254         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4255         _cflags_speed='-O2'
4256         _cflags_size='-Os'
4257         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4258     elif $_cc -V 2>&1 | grep -q Portland; then
4259         _type=pgi
4260         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4261         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4262         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4263         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4264         _cflags_noopt="-O"
4265         _flags_filter=pgi_flags
4266     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4267         _type=armasm
4268         _ident=$($_cc | head -n1)
4269         # 4509: "This form of conditional instruction is deprecated"
4270         _flags="-nologo -ignore 4509"
4271         _flags_filter=armasm_flags
4272     elif $_cc 2>&1 | grep -q Intel; then
4273         _type=icl
4274         _ident=$($_cc 2>&1 | head -n1)
4275         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4276         # Not only is O3 broken on 13.x+ but it is slower on all previous
4277         # versions (tested) as well.
4278         _cflags_speed="-O2"
4279         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4280         if $_cc 2>&1 | grep -q Linker; then
4281             _ld_o='-out:$@'
4282         else
4283             _ld_o='-Fe$@'
4284         fi
4285         _cc_o='-Fo$@'
4286         _cc_e='-P'
4287         _flags_filter=icl_flags
4288         _ld_lib='lib%.a'
4289         _ld_path='-libpath:'
4290         # -Qdiag-error to make icl error when seeing certain unknown arguments
4291         _flags='-nologo -Qdiag-error:4044,10157'
4292         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4293         # with MSVC which enables it by default.
4294         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4295         disable stripping
4296     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4297         # lld can emulate multiple different linkers; in ms link.exe mode,
4298         # the -? parameter gives the help output which contains an identifyable
4299         # string, while it gives an error in other modes.
4300         _type=lld-link
4301         # The link.exe mode doesn't have a switch for getting the version,
4302         # but we can force it back to gnu mode and get the version from there.
4303         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4304         _ld_o='-out:$@'
4305         _flags_filter=msvc_flags
4306         _ld_lib='lib%.a'
4307         _ld_path='-libpath:'
4308     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4309         _type=msvc
4310         _ident=$($_cc 2>&1 | head -n1)
4311         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4312         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4313         _cflags_speed="-O2"
4314         _cflags_size="-O1"
4315         _cflags_noopt="-O1"
4316         if $_cc -nologo- 2>&1 | grep -q Linker; then
4317             _ld_o='-out:$@'
4318         else
4319             _ld_o='-Fe$@'
4320         fi
4321         _cc_o='-Fo$@'
4322         _cc_e='-P -Fi$@'
4323         _flags_filter=msvc_flags
4324         _ld_lib='lib%.a'
4325         _ld_path='-libpath:'
4326         _flags='-nologo'
4327         disable stripping
4328     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4329         _type=cparser
4330         _ident=$($_cc --version | head -n1)
4331         _depflags='-MMD'
4332         _cflags_speed='-O4'
4333         _cflags_size='-O2'
4334         _flags_filter=cparser_flags
4335     fi
4336
4337     eval ${pfx}_type=\$_type
4338     eval ${pfx}_ident=\$_ident
4339 }
4340
4341 set_ccvars(){
4342     eval ${1}_C=\${_cc_c-\${${1}_C}}
4343     eval ${1}_E=\${_cc_e-\${${1}_E}}
4344     eval ${1}_O=\${_cc_o-\${${1}_O}}
4345
4346     if [ -n "$_depflags" ]; then
4347         eval ${1}_DEPFLAGS=\$_depflags
4348     else
4349         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4350         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4351         eval DEP${1}FLAGS=\$_flags
4352     fi
4353 }
4354
4355 probe_cc cc "$cc" "true"
4356 cflags_filter=$_flags_filter
4357 cflags_speed=$_cflags_speed
4358 cflags_size=$_cflags_size
4359 cflags_noopt=$_cflags_noopt
4360 add_cflags $_flags $_cflags
4361 cc_ldflags=$_ldflags
4362 set_ccvars CC
4363 set_ccvars CXX
4364
4365 probe_cc hostcc "$host_cc"
4366 host_cflags_filter=$_flags_filter
4367 host_cflags_speed=$_cflags_speed
4368 add_host_cflags  $_flags $_cflags
4369 set_ccvars HOSTCC
4370
4371 test -n "$cc_type" && enable $cc_type ||
4372     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4373
4374 : ${as_default:=$cc}
4375 : ${objcc_default:=$cc}
4376 : ${dep_cc_default:=$cc}
4377 : ${ld_default:=$cc}
4378 : ${host_ld_default:=$host_cc}
4379 set_default ar as objcc dep_cc ld ln_s host_ld windres
4380
4381 probe_cc as "$as"
4382 asflags_filter=$_flags_filter
4383 add_asflags $_flags $_cflags
4384 set_ccvars AS
4385
4386 probe_cc objcc "$objcc"
4387 objcflags_filter=$_flags_filter
4388 add_objcflags $_flags $_cflags
4389 set_ccvars OBJC
4390
4391 probe_cc ld "$ld"
4392 ldflags_filter=$_flags_filter
4393 add_ldflags $_flags $_ldflags
4394 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4395 LD_O=${_ld_o-$LD_O}
4396 LD_LIB=${_ld_lib-$LD_LIB}
4397 LD_PATH=${_ld_path-$LD_PATH}
4398
4399 probe_cc hostld "$host_ld"
4400 host_ldflags_filter=$_flags_filter
4401 add_host_ldflags $_flags $_ldflags
4402 HOSTLD_O=${_ld_o-$HOSTLD_O}
4403
4404 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4405     probe_cc depcc "$dep_cc"
4406     CCDEP=${_DEPCMD:-$DEPCMD}
4407     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4408     DEPCCFLAGS=$_flags
4409 fi
4410
4411 if $ar 2>&1 | grep -q Microsoft; then
4412     arflags="-nologo"
4413     ar_o='-out:$@'
4414 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4415     arflags="rq"
4416     ar_o='$@'
4417 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4418     arflags='-Xany -r -c'
4419     ar_o='$@'
4420 elif $ar 2>&1 | grep -q "\[D\] "; then
4421     arflags="rcD"
4422     ar_o='$@'
4423 else
4424     arflags="rc"
4425     ar_o='$@'
4426 fi
4427
4428 add_cflags $extra_cflags
4429 add_cxxflags $extra_cxxflags
4430 add_objcflags $extra_objcflags
4431 add_asflags $extra_cflags
4432
4433 if test -n "$sysroot"; then
4434     case "$cc_type" in
4435         gcc|llvm_gcc|clang)
4436             add_cppflags --sysroot="$sysroot"
4437             add_ldflags --sysroot="$sysroot"
4438         ;;
4439         tms470)
4440             add_cppflags -I"$sysinclude"
4441             add_ldflags  --sysroot="$sysroot"
4442         ;;
4443     esac
4444 fi
4445
4446 if test "$cpu" = host; then
4447     enabled cross_compile &&
4448         die "--cpu=host makes no sense when cross-compiling."
4449
4450     case "$cc_type" in
4451         gcc|llvm_gcc)
4452             check_native(){
4453                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4454                 sed -n "/cc1.*$1=/{
4455                             s/.*$1=\\([^ ]*\\).*/\\1/
4456                             p
4457                             q
4458                         }" $TMPE
4459             }
4460             cpu=$(check_native -march || check_native -mcpu)
4461         ;;
4462         clang)
4463             check_native(){
4464                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4465                 sed -n "/cc1.*-target-cpu /{
4466                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4467                             p
4468                             q
4469                         }" $TMPE
4470             }
4471             cpu=$(check_native -march)
4472         ;;
4473     esac
4474
4475     test "${cpu:-host}" = host &&
4476         die "--cpu=host not supported with compiler $cc"
4477 fi
4478
4479 # Deal with common $arch aliases
4480 case "$arch" in
4481     aarch64|arm64)
4482         arch="aarch64"
4483     ;;
4484     arm*|iPad*|iPhone*)
4485         arch="arm"
4486     ;;
4487     mips*|IP*)
4488         case "$arch" in
4489         *el)
4490             add_cppflags -EL
4491             add_ldflags -EL
4492         ;;
4493         *eb)
4494             add_cppflags -EB
4495             add_ldflags -EB
4496         ;;
4497         esac
4498         arch="mips"
4499     ;;
4500     parisc*|hppa*)
4501         arch="parisc"
4502     ;;
4503     "Power Macintosh"|ppc*|powerpc*)
4504         arch="ppc"
4505     ;;
4506     s390|s390x)
4507         arch="s390"
4508     ;;
4509     sh4|sh)
4510         arch="sh4"
4511     ;;
4512     sun4*|sparc*)
4513         arch="sparc"
4514     ;;
4515     tilegx|tile-gx)
4516         arch="tilegx"
4517     ;;
4518     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4519         arch="x86"
4520     ;;
4521 esac
4522
4523 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4524 enable $arch
4525
4526 # Add processor-specific flags
4527 if enabled aarch64; then
4528
4529     case $cpu in
4530         armv*)
4531             cpuflags="-march=$cpu"
4532         ;;
4533         *)
4534             cpuflags="-mcpu=$cpu"
4535         ;;
4536     esac
4537
4538 elif enabled alpha; then
4539
4540     cpuflags="-mcpu=$cpu"
4541
4542 elif enabled arm; then
4543
4544     check_arm_arch() {
4545         check_cpp_condition stddef.h \
4546             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4547             $cpuflags
4548     }
4549
4550     probe_arm_arch() {
4551         if   check_arm_arch 4;        then echo armv4
4552         elif check_arm_arch 4T;       then echo armv4t
4553         elif check_arm_arch 5;        then echo armv5
4554         elif check_arm_arch 5E;       then echo armv5e
4555         elif check_arm_arch 5T;       then echo armv5t
4556         elif check_arm_arch 5TE;      then echo armv5te
4557         elif check_arm_arch 5TEJ;     then echo armv5te
4558         elif check_arm_arch 6;        then echo armv6
4559         elif check_arm_arch 6J;       then echo armv6j
4560         elif check_arm_arch 6K;       then echo armv6k
4561         elif check_arm_arch 6Z;       then echo armv6z
4562         elif check_arm_arch 6ZK;      then echo armv6zk
4563         elif check_arm_arch 6T2;      then echo armv6t2
4564         elif check_arm_arch 7;        then echo armv7
4565         elif check_arm_arch 7A  7_A;  then echo armv7-a
4566         elif check_arm_arch 7S;       then echo armv7-a
4567         elif check_arm_arch 7R  7_R;  then echo armv7-r
4568         elif check_arm_arch 7M  7_M;  then echo armv7-m
4569         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4570         elif check_arm_arch 8A  8_A;  then echo armv8-a
4571         fi
4572     }
4573
4574     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4575
4576     case $cpu in
4577         armv*)
4578             cpuflags="-march=$cpu"
4579             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4580         ;;
4581         *)
4582             cpuflags="-mcpu=$cpu"
4583             case $cpu in
4584                 cortex-a*)                               subarch=armv7a  ;;
4585                 cortex-r*)                               subarch=armv7r  ;;
4586                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4587                 arm11*)                                  subarch=armv6   ;;
4588                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4589                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4590                 *)                             subarch=$(probe_arm_arch) ;;
4591             esac
4592         ;;
4593     esac
4594
4595     case "$subarch" in
4596         armv5t*)    enable fast_clz                ;;
4597         armv[6-8]*)
4598             enable fast_clz
4599             disabled fast_unaligned || enable fast_unaligned
4600             ;;
4601     esac
4602
4603 elif enabled avr32; then
4604
4605     case $cpu in
4606         ap7[02]0[0-2])
4607             subarch="avr32_ap"
4608             cpuflags="-mpart=$cpu"
4609         ;;
4610         ap)
4611             subarch="avr32_ap"
4612             cpuflags="-march=$cpu"
4613         ;;
4614         uc3[ab]*)
4615             subarch="avr32_uc"
4616             cpuflags="-mcpu=$cpu"
4617         ;;
4618         uc)
4619             subarch="avr32_uc"
4620             cpuflags="-march=$cpu"
4621         ;;
4622     esac
4623
4624 elif enabled bfin; then
4625
4626     cpuflags="-mcpu=$cpu"
4627
4628 elif enabled mips; then
4629
4630     cpuflags="-march=$cpu"
4631
4632     if [ "$cpu" != "generic" ]; then
4633         disable mips32r2
4634         disable mips32r5
4635         disable mips64r2
4636         disable mips32r6
4637         disable mips64r6
4638         disable loongson2
4639         disable loongson3
4640
4641         case $cpu in
4642             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4643                 enable mips32r2
4644                 disable msa
4645             ;;
4646             p5600|i6400|p6600)
4647                 disable mipsdsp
4648                 disable mipsdspr2
4649             ;;
4650             loongson*)
4651                 enable loongson2
4652                 enable loongson3
4653                 enable local_aligned
4654                 enable simd_align_16
4655                 enable fast_64bit
4656                 enable fast_clz
4657                 enable fast_cmov
4658                 enable fast_unaligned
4659                 disable aligned_stack
4660                 disable mipsfpu
4661                 disable mipsdsp
4662                 disable mipsdspr2
4663                 case $cpu in
4664                     loongson3*)
4665                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4666                     ;;
4667                     loongson2e)
4668                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4669                     ;;
4670                     loongson2f)
4671                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4672                     ;;
4673                 esac
4674             ;;
4675             *)
4676                 # Unknown CPU. Disable everything.
4677                 warn "unknown CPU. Disabling all MIPS optimizations."
4678                 disable mipsfpu
4679                 disable mipsdsp
4680                 disable mipsdspr2
4681                 disable msa
4682                 disable mmi
4683             ;;
4684         esac
4685
4686         case $cpu in
4687             24kc)
4688                 disable mipsfpu
4689                 disable mipsdsp
4690                 disable mipsdspr2
4691             ;;
4692             24kf*)
4693                 disable mipsdsp
4694                 disable mipsdspr2
4695             ;;
4696             24kec|34kc|1004kc)
4697                 disable mipsfpu
4698                 disable mipsdspr2
4699             ;;
4700             24kef*|34kf*|1004kf*)
4701                 disable mipsdspr2
4702             ;;
4703             74kc)
4704                 disable mipsfpu
4705             ;;
4706             p5600)
4707                 enable mips32r5
4708                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4709             ;;
4710             i6400)
4711                 enable mips64r6
4712                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4713             ;;
4714             p6600)
4715                 enable mips64r6
4716                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4717             ;;
4718         esac
4719     else
4720         # We do not disable anything. Is up to the user to disable the unwanted features.
4721         warn 'generic cpu selected'
4722     fi
4723
4724 elif enabled ppc; then
4725
4726     disable ldbrx
4727
4728     case $(tolower $cpu) in
4729         601|ppc601|powerpc601)
4730             cpuflags="-mcpu=601"
4731             disable altivec
4732         ;;
4733         603*|ppc603*|powerpc603*)
4734             cpuflags="-mcpu=603"
4735             disable altivec
4736         ;;
4737         604*|ppc604*|powerpc604*)
4738             cpuflags="-mcpu=604"
4739             disable altivec
4740         ;;
4741         g3|75*|ppc75*|powerpc75*)
4742             cpuflags="-mcpu=750"
4743             disable altivec
4744         ;;
4745         g4|745*|ppc745*|powerpc745*)
4746             cpuflags="-mcpu=7450"
4747             disable vsx
4748         ;;
4749         74*|ppc74*|powerpc74*)
4750             cpuflags="-mcpu=7400"
4751             disable vsx
4752         ;;
4753         g5|970|ppc970|powerpc970)
4754             cpuflags="-mcpu=970"
4755             disable vsx
4756         ;;
4757         power[3-6]*)
4758             cpuflags="-mcpu=$cpu"
4759             disable vsx
4760         ;;
4761         power[7-8]*)
4762             cpuflags="-mcpu=$cpu"
4763         ;;
4764         cell)
4765             cpuflags="-mcpu=cell"
4766             enable ldbrx
4767             disable vsx
4768         ;;
4769         e500mc)
4770             cpuflags="-mcpu=e500mc"
4771             disable altivec
4772         ;;
4773         e500v2)
4774             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4775             disable altivec
4776             disable dcbzl
4777         ;;
4778         e500)
4779             cpuflags="-mcpu=8540 -mhard-float"
4780             disable altivec
4781             disable dcbzl
4782         ;;
4783     esac
4784
4785 elif enabled sparc; then
4786
4787     case $cpu in
4788         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4789             cpuflags="-mcpu=$cpu"
4790         ;;
4791         ultrasparc*|niagara[234])
4792             cpuflags="-mcpu=$cpu"
4793         ;;
4794     esac
4795
4796 elif enabled x86; then
4797
4798     case $cpu in
4799         i[345]86|pentium)
4800             cpuflags="-march=$cpu"
4801             disable i686
4802             disable mmx
4803         ;;
4804         # targets that do NOT support nopl and conditional mov (cmov)
4805         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4806             cpuflags="-march=$cpu"
4807             disable i686
4808         ;;
4809         # targets that do support nopl and conditional mov (cmov)
4810         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4811         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4812         |amdfam10|barcelona|b[dt]ver*|znver*)
4813             cpuflags="-march=$cpu"
4814             enable i686
4815             enable fast_cmov
4816         ;;
4817         # targets that do support conditional mov but on which it's slow
4818         pentium4|pentium4m|prescott|nocona)
4819             cpuflags="-march=$cpu"
4820             enable i686
4821             disable fast_cmov
4822         ;;
4823     esac
4824
4825 fi
4826
4827 if [ "$cpu" != generic ]; then
4828     add_cflags  $cpuflags
4829     add_asflags $cpuflags
4830     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4831 fi
4832
4833 # compiler sanity check
4834 check_exec <<EOF
4835 int main(void){ return 0; }
4836 EOF
4837 if test "$?" != 0; then
4838     echo "$cc is unable to create an executable file."
4839     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4840         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4841         echo "Only do this if you know what cross compiling means."
4842     fi
4843     die "C compiler test failed."
4844 fi
4845
4846 add_cppflags -D_ISOC99_SOURCE
4847 add_cxxflags -D__STDC_CONSTANT_MACROS
4848 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4849
4850 # some compilers silently accept -std=c11, so we also need to check that the
4851 # version macro is defined properly
4852 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4853     add_cflags -std=c11 ||
4854     check_cflags -std=c99
4855
4856 check_cppflags -D_FILE_OFFSET_BITS=64
4857 check_cppflags -D_LARGEFILE_SOURCE
4858
4859 add_host_cppflags -D_ISOC99_SOURCE
4860 check_host_cflags -std=c99
4861 check_host_cflags -Wall
4862 check_host_cflags $host_cflags_speed
4863
4864 check_64bit(){
4865     arch32=$1
4866     arch64=$2
4867     expr=$3
4868     check_code cc "" "int test[2*($expr) - 1]" &&
4869         subarch=$arch64 || subarch=$arch32
4870 }
4871
4872 case "$arch" in
4873     aarch64|alpha|ia64)
4874         spic=$shared
4875     ;;
4876     mips)
4877         check_64bit mips mips64 '_MIPS_SIM > 1'
4878         spic=$shared
4879     ;;
4880     parisc)
4881         check_64bit parisc parisc64 'sizeof(void *) > 4'
4882         spic=$shared
4883<