86c74d7c2c151b4ad9b809f797f6c78e73f88a58
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build (deprecated) [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Individual component options:
152   --disable-everything     disable all components listed below
153   --disable-encoder=NAME   disable encoder NAME
154   --enable-encoder=NAME    enable encoder NAME
155   --disable-encoders       disable all encoders
156   --disable-decoder=NAME   disable decoder NAME
157   --enable-decoder=NAME    enable decoder NAME
158   --disable-decoders       disable all decoders
159   --disable-hwaccel=NAME   disable hwaccel NAME
160   --enable-hwaccel=NAME    enable hwaccel NAME
161   --disable-hwaccels       disable all hwaccels
162   --disable-muxer=NAME     disable muxer NAME
163   --enable-muxer=NAME      enable muxer NAME
164   --disable-muxers         disable all muxers
165   --disable-demuxer=NAME   disable demuxer NAME
166   --enable-demuxer=NAME    enable demuxer NAME
167   --disable-demuxers       disable all demuxers
168   --enable-parser=NAME     enable parser NAME
169   --disable-parser=NAME    disable parser NAME
170   --disable-parsers        disable all parsers
171   --enable-bsf=NAME        enable bitstream filter NAME
172   --disable-bsf=NAME       disable bitstream filter NAME
173   --disable-bsfs           disable all bitstream filters
174   --enable-protocol=NAME   enable protocol NAME
175   --disable-protocol=NAME  disable protocol NAME
176   --disable-protocols      disable all protocols
177   --enable-indev=NAME      enable input device NAME
178   --disable-indev=NAME     disable input device NAME
179   --disable-indevs         disable input devices
180   --enable-outdev=NAME     enable output device NAME
181   --disable-outdev=NAME    disable output device NAME
182   --disable-outdevs        disable output devices
183   --disable-devices        disable all devices
184   --enable-filter=NAME     enable filter NAME
185   --disable-filter=NAME    disable filter NAME
186   --disable-filters        disable all filters
187
188 External library support:
189
190   Using any of the following switches will allow FFmpeg to link to the
191   corresponding external library. All the components depending on that library
192   will become enabled, if all their other dependencies are met and they are not
193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
194   libwavpack and allow the libwavpack encoder to be built, unless it is
195   specifically disabled with --disable-encoder=libwavpack.
196
197   Note that only the system libraries are auto-detected. All the other external
198   libraries must be explicitly enabled.
199
200   Also note that the following help text describes the purpose of the libraries
201   themselves, not all their features will necessarily be usable by FFmpeg.
202
203   --disable-alsa           disable ALSA support [autodetect]
204   --disable-appkit         disable Apple AppKit framework [autodetect]
205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
206   --enable-avisynth        enable reading of AviSynth script files [no]
207   --disable-bzlib          disable bzlib [autodetect]
208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
210   --enable-frei0r          enable frei0r video filtering [no]
211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
212                            if openssl, librtmp or gmp is not used [no]
213   --enable-gmp             enable gmp, needed for rtmp(t)e support
214                            if openssl or librtmp is not used [no]
215   --enable-gnutls          enable gnutls, needed for https support
216                            if openssl or libtls is not used [no]
217   --disable-iconv          disable iconv [autodetect]
218   --enable-jni             enable JNI support [no]
219   --enable-ladspa          enable LADSPA audio filtering [no]
220   --enable-libass          enable libass subtitles rendering,
221                            needed for subtitles and ass filter [no]
222   --enable-libbluray       enable BluRay reading using libbluray [no]
223   --enable-libbs2b         enable bs2b DSP library [no]
224   --enable-libcaca         enable textual display using libcaca [no]
225   --enable-libcelt         enable CELT decoding via libcelt [no]
226   --enable-libcdio         enable audio CD grabbing with libcdio [no]
227   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
228                            and libraw1394 [no]
229   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
230   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
231   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
232   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
233   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
234   --enable-libgme          enable Game Music Emu via libgme [no]
235   --enable-libgsm          enable GSM de/encoding via libgsm [no]
236   --enable-libiec61883     enable iec61883 via libiec61883 [no]
237   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
238   --enable-libjack         enable JACK audio sound server [no]
239   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
240   --enable-libmodplug      enable ModPlug via libmodplug [no]
241   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
242   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
243   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
244   --enable-libopencv       enable video filtering via libopencv [no]
245   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
246   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
247   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
248   --enable-libopus         enable Opus de/encoding via libopus [no]
249   --enable-libpulse        enable Pulseaudio input via libpulse [no]
250   --enable-librsvg         enable SVG rasterization via librsvg [no]
251   --enable-librubberband   enable rubberband needed for rubberband filter [no]
252   --enable-librtmp         enable RTMP[E] support via librtmp [no]
253   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
254   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
255   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
256   --enable-libsoxr         enable Include libsoxr resampling [no]
257   --enable-libspeex        enable Speex de/encoding via libspeex [no]
258   --enable-libssh          enable SFTP protocol via libssh [no]
259   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
260   --enable-libtheora       enable Theora encoding via libtheora [no]
261   --enable-libtls          enable LibreSSL (via libtls), needed for https support
262                            if openssl or gnutls is not used [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   --enable-lv2             enable LV2 audio filtering [no]
287   --disable-lzma           disable lzma [autodetect]
288   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
289   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
290   --enable-mediacodec      enable Android MediaCodec support [no]
291   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
292   --enable-openal          enable OpenAL 1.1 capture support [no]
293   --enable-opencl          enable OpenCL processing [no]
294   --enable-opengl          enable OpenGL rendering [no]
295   --enable-openssl         enable openssl, needed for https support
296                            if gnutls or libtls is not used [no]
297   --disable-sndio          disable sndio support [autodetect]
298   --disable-schannel       disable SChannel SSP, needed for TLS support on
299                            Windows if openssl and gnutls are not used [autodetect]
300   --disable-sdl2           disable sdl2 [autodetect]
301   --disable-securetransport disable Secure Transport, needed for TLS support
302                            on OSX if openssl and gnutls are not used [autodetect]
303   --disable-xlib           disable xlib [autodetect]
304   --disable-zlib           disable zlib [autodetect]
305
306   The following libraries provide various hardware acceleration features:
307   --disable-amf            disable AMF video encoding code [autodetect]
308   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
309   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
310   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
311   --disable-cuvid          disable Nvidia CUVID support [autodetect]
312   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
313   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
314   --enable-libdrm          enable DRM code (Linux) [no]
315   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
316   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
317   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
318   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
319   --disable-nvenc          disable Nvidia video encoding code [autodetect]
320   --enable-omx             enable OpenMAX IL code [no]
321   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
322   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
323   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
324   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
325   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
326   --disable-videotoolbox   disable VideoToolbox code [autodetect]
327
328 Toolchain options:
329   --arch=ARCH              select architecture [$arch]
330   --cpu=CPU                select the minimum required CPU (affects
331                            instruction selection, may crash on older CPUs)
332   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
333   --progs-suffix=SUFFIX    program name suffix []
334   --enable-cross-compile   assume a cross-compiler is used
335   --sysroot=PATH           root of cross-build tree
336   --sysinclude=PATH        location of cross-build system headers
337   --target-os=OS           compiler targets OS [$target_os]
338   --target-exec=CMD        command to run executables on target
339   --target-path=DIR        path to view of build directory on target
340   --target-samples=DIR     path to samples directory on target
341   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
342   --toolchain=NAME         set tool defaults according to NAME
343   --nm=NM                  use nm tool NM [$nm_default]
344   --ar=AR                  use archive tool AR [$ar_default]
345   --as=AS                  use assembler AS [$as_default]
346   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
347   --strip=STRIP            use strip tool STRIP [$strip_default]
348   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
349   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
350   --cc=CC                  use C compiler CC [$cc_default]
351   --cxx=CXX                use C compiler CXX [$cxx_default]
352   --objcc=OCC              use ObjC compiler OCC [$cc_default]
353   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
354   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
355   --ld=LD                  use linker LD [$ld_default]
356   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
357   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
358   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
359   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
360   --host-cc=HOSTCC         use host C compiler HOSTCC
361   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
362   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
363   --host-ld=HOSTLD         use host linker HOSTLD
364   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
365   --host-libs=HLIBS        use libs HLIBS when linking for host
366   --host-os=OS             compiler host OS [$target_os]
367   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
368   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
369   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
370   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
371   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
372   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
373   --extra-libs=ELIBS       add ELIBS [$ELIBS]
374   --extra-version=STRING   version string suffix []
375   --optflags=OPTFLAGS      override optimization-related compiler flags
376   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
377   --build-suffix=SUFFIX    library name suffix []
378   --enable-pic             build position-independent code
379   --enable-thumb           compile for Thumb instruction set
380   --enable-lto             use link-time optimization
381   --env="ENV=override"     override the environment variables
382
383 Advanced options (experts only):
384   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
385   --custom-allocator=NAME  use a supported custom allocator
386   --disable-symver         disable symbol versioning
387   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
388   --disable-safe-bitstream-reader
389                            disable buffer boundary checking in bitreaders
390                            (faster, but may crash)
391   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
392
393 Optimization options (experts only):
394   --disable-asm            disable all assembly optimizations
395   --disable-altivec        disable AltiVec optimizations
396   --disable-vsx            disable VSX optimizations
397   --disable-power8         disable POWER8 optimizations
398   --disable-amd3dnow       disable 3DNow! optimizations
399   --disable-amd3dnowext    disable 3DNow! extended optimizations
400   --disable-mmx            disable MMX optimizations
401   --disable-mmxext         disable MMXEXT optimizations
402   --disable-sse            disable SSE optimizations
403   --disable-sse2           disable SSE2 optimizations
404   --disable-sse3           disable SSE3 optimizations
405   --disable-ssse3          disable SSSE3 optimizations
406   --disable-sse4           disable SSE4 optimizations
407   --disable-sse42          disable SSE4.2 optimizations
408   --disable-avx            disable AVX optimizations
409   --disable-xop            disable XOP optimizations
410   --disable-fma3           disable FMA3 optimizations
411   --disable-fma4           disable FMA4 optimizations
412   --disable-avx2           disable AVX2 optimizations
413   --disable-avx512         disable AVX-512 optimizations
414   --disable-aesni          disable AESNI optimizations
415   --disable-armv5te        disable armv5te optimizations
416   --disable-armv6          disable armv6 optimizations
417   --disable-armv6t2        disable armv6t2 optimizations
418   --disable-vfp            disable VFP optimizations
419   --disable-neon           disable NEON optimizations
420   --disable-inline-asm     disable use of inline assembly
421   --disable-x86asm         disable use of standalone x86 assembly
422   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
423   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
424   --disable-msa            disable MSA optimizations
425   --disable-mipsfpu        disable floating point MIPS optimizations
426   --disable-mmi            disable Loongson SIMD optimizations
427   --disable-fast-unaligned consider unaligned accesses slow
428
429 Developer options (useful when working on FFmpeg itself):
430   --disable-debug          disable debugging symbols
431   --enable-debug=LEVEL     set the debug level [$debuglevel]
432   --disable-optimizations  disable compiler optimizations
433   --enable-extra-warnings  enable more compiler warnings
434   --disable-stripping      disable stripping of executables and shared libraries
435   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
436                            2 causes a slowdown at runtime.
437   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
438   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
439                            leaks and errors, using the specified valgrind binary.
440                            Cannot be combined with --target-exec
441   --enable-ftrapv          Trap arithmetic overflows
442   --samples=PATH           location of test samples for FATE, if not set use
443                            \$FATE_SAMPLES at make invocation time.
444   --enable-neon-clobber-test check NEON registers for clobbering (should be
445                            used only for debugging purposes)
446   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
447                            should be used only for debugging purposes)
448   --enable-random          randomly enable/disable components
449   --disable-random
450   --enable-random=LIST     randomly enable/disable specific components or
451   --disable-random=LIST    component groups. LIST is a comma-separated list
452                            of NAME[:PROB] entries where NAME is a component
453                            (group) and PROB the probability associated with
454                            NAME (default 0.5).
455   --random-seed=VALUE      seed value for --enable/disable-random
456   --disable-valgrind-backtrace do not print a backtrace under Valgrind
457                            (only applies to --disable-optimizations builds)
458   --enable-osfuzz          Enable building fuzzer tool
459   --libfuzzer=PATH         path to libfuzzer
460   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
461                            in the name) of tests whose result is ignored
462   --enable-linux-perf      enable Linux Performance Monitor API
463
464 NOTE: Object files are built at the place where configure is launched.
465 EOF
466   exit 0
467 }
468
469 if test -t 1 && which tput >/dev/null 2>&1; then
470     ncolors=$(tput colors)
471     if test -n "$ncolors" && test $ncolors -ge 8; then
472         bold_color=$(tput bold)
473         warn_color=$(tput setaf 3)
474         error_color=$(tput setaf 1)
475         reset_color=$(tput sgr0)
476     fi
477     # 72 used instead of 80 since that's the default of pr
478     ncols=$(tput cols)
479 fi
480 : ${ncols:=72}
481
482 log(){
483     echo "$@" >> $logfile
484 }
485
486 log_file(){
487     log BEGIN $1
488     pr -n -t $1 >> $logfile
489     log END $1
490 }
491
492 warn(){
493     log "WARNING: $*"
494     WARNINGS="${WARNINGS}WARNING: $*\n"
495 }
496
497 die(){
498     log "$@"
499     echo "$error_color$bold_color$@$reset_color"
500     cat <<EOF
501
502 If you think configure made a mistake, make sure you are using the latest
503 version from Git.  If the latest version fails, report the problem to the
504 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
505 EOF
506     if disabled logging; then
507         cat <<EOF
508 Rerun configure with logging enabled (do not use --disable-logging), and
509 include the log this produces with your report.
510 EOF
511     else
512         cat <<EOF
513 Include the log file "$logfile" produced by configure as this will help
514 solve the problem.
515 EOF
516     fi
517     exit 1
518 }
519
520 # Avoid locale weirdness, besides we really just want to translate ASCII.
521 toupper(){
522     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
523 }
524
525 tolower(){
526     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
527 }
528
529 c_escape(){
530     echo "$*" | sed 's/["\\]/\\\0/g'
531 }
532
533 sh_quote(){
534     v=$(echo "$1" | sed "s/'/'\\\\''/g")
535     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
536     echo "$v"
537 }
538
539 cleanws(){
540     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
541 }
542
543 filter(){
544     pat=$1
545     shift
546     for v; do
547         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
548     done
549 }
550
551 filter_out(){
552     pat=$1
553     shift
554     for v; do
555         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
556     done
557 }
558
559 map(){
560     m=$1
561     shift
562     for v; do eval $m; done
563 }
564
565 add_suffix(){
566     suffix=$1
567     shift
568     for v; do echo ${v}${suffix}; done
569 }
570
571 set_all(){
572     value=$1
573     shift
574     for var in $*; do
575         eval $var=$value
576     done
577 }
578
579 set_weak(){
580     value=$1
581     shift
582     for var; do
583         eval : \${$var:=$value}
584     done
585 }
586
587 sanitize_var_name(){
588     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
589 }
590
591 set_sanitized(){
592     var=$1
593     shift
594     eval $(sanitize_var_name "$var")='$*'
595 }
596
597 get_sanitized(){
598     eval echo \$$(sanitize_var_name "$1")
599 }
600
601 pushvar(){
602     for pvar in $*; do
603         eval level=\${${pvar}_level:=0}
604         eval ${pvar}_${level}="\$$pvar"
605         eval ${pvar}_level=$(($level+1))
606     done
607 }
608
609 popvar(){
610     for pvar in $*; do
611         eval level=\${${pvar}_level:-0}
612         test $level = 0 && continue
613         eval level=$(($level-1))
614         eval $pvar="\${${pvar}_${level}}"
615         eval ${pvar}_level=$level
616         eval unset ${pvar}_${level}
617     done
618 }
619
620 request(){
621     for var in $*; do
622         eval ${var}_requested=yes
623         eval $var=
624     done
625 }
626
627 enable(){
628     set_all yes $*
629 }
630
631 disable(){
632     set_all no $*
633 }
634
635 enable_weak(){
636     set_weak yes $*
637 }
638
639 disable_weak(){
640     set_weak no $*
641 }
642
643 enable_sanitized(){
644     for var; do
645         enable $(sanitize_var_name $var)
646     done
647 }
648
649 disable_sanitized(){
650     for var; do
651         disable $(sanitize_var_name $var)
652     done
653 }
654
655 do_enable_deep(){
656     for var; do
657         enabled $var && continue
658         eval sel="\$${var}_select"
659         eval sgs="\$${var}_suggest"
660         pushvar var sgs
661         enable_deep $sel
662         popvar sgs
663         enable_deep_weak $sgs
664         popvar var
665     done
666 }
667
668 enable_deep(){
669     do_enable_deep $*
670     enable $*
671 }
672
673 enable_deep_weak(){
674     for var; do
675         disabled $var && continue
676         pushvar var
677         do_enable_deep $var
678         popvar var
679         enable_weak $var
680     done
681 }
682
683 requested(){
684     test "${1#!}" = "$1" && op="=" || op="!="
685     eval test "x\$${1#!}_requested" $op "xyes"
686 }
687
688 enabled(){
689     test "${1#!}" = "$1" && op="=" || op="!="
690     eval test "x\$${1#!}" $op "xyes"
691 }
692
693 disabled(){
694     test "${1#!}" = "$1" && op="=" || op="!="
695     eval test "x\$${1#!}" $op "xno"
696 }
697
698 enabled_all(){
699     for opt; do
700         enabled $opt || return 1
701     done
702 }
703
704 disabled_all(){
705     for opt; do
706         disabled $opt || return 1
707     done
708 }
709
710 enabled_any(){
711     for opt; do
712         enabled $opt && return 0
713     done
714 }
715
716 disabled_any(){
717     for opt; do
718         disabled $opt && return 0
719     done
720     return 1
721 }
722
723 set_default(){
724     for opt; do
725         eval : \${$opt:=\$${opt}_default}
726     done
727 }
728
729 is_in(){
730     value=$1
731     shift
732     for var in $*; do
733         [ $var = $value ] && return 0
734     done
735     return 1
736 }
737
738 check_deps(){
739     for cfg; do
740         enabled ${cfg}_checking && die "Circular dependency for $cfg."
741         disabled ${cfg}_checking && continue
742         enable ${cfg}_checking
743
744         eval dep_all="\$${cfg}_deps"
745         eval dep_any="\$${cfg}_deps_any"
746         eval dep_con="\$${cfg}_conflict"
747         eval dep_sel="\$${cfg}_select"
748         eval dep_sgs="\$${cfg}_suggest"
749         eval dep_ifa="\$${cfg}_if"
750         eval dep_ifn="\$${cfg}_if_any"
751
752         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
753         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
754         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
755
756         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
757         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
758         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
759         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
760         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
761         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
762
763         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
764
765         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
766             # filter out library deps, these do not belong in extralibs
767             is_in $dep $LIBRARY_LIST && continue
768             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
769         done
770
771         disable ${cfg}_checking
772     done
773 }
774
775 print_config(){
776     pfx=$1
777     files=$2
778     shift 2
779     map 'eval echo "$v \${$v:-no}"' "$@" |
780     awk "BEGIN { split(\"$files\", files) }
781         {
782             c = \"$pfx\" toupper(\$1);
783             v = \$2;
784             sub(/yes/, 1, v);
785             sub(/no/,  0, v);
786             for (f in files) {
787                 file = files[f];
788                 if (file ~ /\\.h\$/) {
789                     printf(\"#define %s %d\\n\", c, v) >>file;
790                 } else if (file ~ /\\.asm\$/) {
791                     printf(\"%%define %s %d\\n\", c, v) >>file;
792                 } else if (file ~ /\\.mak\$/) {
793                     n = -v ? \"\" : \"!\";
794                     printf(\"%s%s=yes\\n\", n, c) >>file;
795                 } else if (file ~ /\\.texi\$/) {
796                     pre = -v ? \"\" : \"@c \";
797                     yesno = \$2;
798                     c2 = tolower(c);
799                     gsub(/_/, \"-\", c2);
800                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
801                 }
802             }
803         }"
804 }
805
806 print_enabled(){
807     suf=$1
808     shift
809     for v; do
810         enabled $v && printf "%s\n" ${v%$suf}
811     done
812 }
813
814 append(){
815     var=$1
816     shift
817     eval "$var=\"\$$var $*\""
818 }
819
820 prepend(){
821     var=$1
822     shift
823     eval "$var=\"$* \$$var\""
824 }
825
826 unique(){
827     var=$1
828     uniq_list=""
829     for tok in $(eval echo \$$var); do
830         uniq_list="$(filter_out $tok $uniq_list) $tok"
831     done
832     eval "$var=\"${uniq_list}\""
833 }
834
835 resolve(){
836     var=$1
837     tmpvar=
838     for entry in $(eval echo \$$var); do
839         tmpvar="$tmpvar $(eval echo \$${entry})"
840     done
841     eval "$var=\"${tmpvar}\""
842 }
843
844 add_cppflags(){
845     append CPPFLAGS "$@"
846 }
847
848 add_cflags(){
849     append CFLAGS $($cflags_filter "$@")
850 }
851
852 add_cflags_headers(){
853     append CFLAGS_HEADERS $($cflags_filter "$@")
854 }
855
856 add_cxxflags(){
857     append CXXFLAGS $($cflags_filter "$@")
858 }
859
860 add_asflags(){
861     append ASFLAGS $($asflags_filter "$@")
862 }
863
864 add_objcflags(){
865     append OBJCFLAGS $($objcflags_filter "$@")
866 }
867
868 add_ldflags(){
869     append LDFLAGS $($ldflags_filter "$@")
870 }
871
872 add_ldexeflags(){
873     append LDEXEFLAGS $($ldflags_filter "$@")
874 }
875
876 add_ldsoflags(){
877     append LDSOFLAGS $($ldflags_filter "$@")
878 }
879
880 add_stripflags(){
881     append ASMSTRIPFLAGS "$@"
882 }
883
884 add_extralibs(){
885     prepend extralibs $($ldflags_filter "$@")
886 }
887
888 add_host_cppflags(){
889     append host_cppflags "$@"
890 }
891
892 add_host_cflags(){
893     append host_cflags $($host_cflags_filter "$@")
894 }
895
896 add_host_ldflags(){
897     append host_ldflags $($host_ldflags_filter "$@")
898 }
899
900 add_compat(){
901     append compat_objs $1
902     shift
903     map 'add_cppflags -D$v' "$@"
904 }
905
906 check_cmd(){
907     log "$@"
908     "$@" >> $logfile 2>&1
909 }
910
911 check_stat(){
912     log check_stat "$@"
913     stat "$1" >> $logfile 2>&1
914 }
915
916 cc_o(){
917     eval printf '%s\\n' $CC_O
918 }
919
920 cc_e(){
921     eval printf '%s\\n' $CC_E
922 }
923
924 check_cc(){
925     log check_cc "$@"
926     cat > $TMPC
927     log_file $TMPC
928     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
929 }
930
931 check_cxx(){
932     log check_cxx "$@"
933     cat > $TMPCPP
934     log_file $TMPCPP
935     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
936 }
937
938 check_objcc(){
939     log check_objcc "$@"
940     cat > $TMPM
941     log_file $TMPM
942     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
943 }
944
945 check_cpp(){
946     log check_cpp "$@"
947     cat > $TMPC
948     log_file $TMPC
949     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
950 }
951
952 as_o(){
953     eval printf '%s\\n' $AS_O
954 }
955
956 check_as(){
957     log check_as "$@"
958     cat > $TMPS
959     log_file $TMPS
960     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
961 }
962
963 check_inline_asm(){
964     log check_inline_asm "$@"
965     name="$1"
966     code="$2"
967     shift 2
968     disable $name
969     check_cc "$@" <<EOF && enable $name
970 void foo(void){ __asm__ volatile($code); }
971 EOF
972 }
973
974 check_inline_asm_flags(){
975     log check_inline_asm_flags "$@"
976     name="$1"
977     code="$2"
978     flags=''
979     shift 2
980     while [ "$1" != "" ]; do
981       append flags $1
982       shift
983     done;
984     disable $name
985     cat > $TMPC <<EOF
986 void foo(void){ __asm__ volatile($code); }
987 EOF
988     log_file $TMPC
989     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
990     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
991 }
992
993 check_insn(){
994     log check_insn "$@"
995     check_inline_asm ${1}_inline "\"$2\""
996     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
997 }
998
999 check_x86asm(){
1000     log check_x86asm "$@"
1001     echo "$1" > $TMPS
1002     log_file $TMPS
1003     shift 1
1004     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1005 }
1006
1007 ld_o(){
1008     eval printf '%s\\n' $LD_O
1009 }
1010
1011 check_ld(){
1012     log check_ld "$@"
1013     type=$1
1014     shift 1
1015     flags=$(filter_out '-l*|*.so' $@)
1016     libs=$(filter '-l*|*.so' $@)
1017     check_$type $($cflags_filter $flags) || return
1018     flags=$($ldflags_filter $flags)
1019     libs=$($ldflags_filter $libs)
1020     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1021 }
1022
1023 print_include(){
1024     hdr=$1
1025     test "${hdr%.h}" = "${hdr}" &&
1026         echo "#include $hdr"    ||
1027         echo "#include <$hdr>"
1028 }
1029
1030 check_code(){
1031     log check_code "$@"
1032     check=$1
1033     headers=$2
1034     code=$3
1035     shift 3
1036     {
1037         for hdr in $headers; do
1038             print_include $hdr
1039         done
1040         echo "int main(void) { $code; return 0; }"
1041     } | check_$check "$@"
1042 }
1043
1044 check_cppflags(){
1045     log check_cppflags "$@"
1046     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1047 #include <stdlib.h>
1048 EOF
1049 }
1050
1051 test_cflags(){
1052     log test_cflags "$@"
1053     set -- $($cflags_filter "$@")
1054     check_cc "$@" <<EOF
1055 int x;
1056 EOF
1057 }
1058
1059 check_cflags(){
1060     log check_cflags "$@"
1061     test_cflags "$@" && add_cflags "$@"
1062 }
1063
1064 check_cxxflags(){
1065     log check_cxxflags "$@"
1066     set -- $($cflags_filter "$@")
1067     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1068 int x;
1069 EOF
1070 }
1071
1072 test_objcflags(){
1073     log test_objcflags "$@"
1074     set -- $($objcflags_filter "$@")
1075     check_objcc "$@" <<EOF
1076 int x;
1077 EOF
1078 }
1079
1080 check_objcflags(){
1081     log check_objcflags "$@"
1082     test_objcflags "$@" && add_objcflags "$@"
1083 }
1084
1085 test_ldflags(){
1086     log test_ldflags "$@"
1087     set -- $($ldflags_filter "$@")
1088     check_ld "cc" "$@" <<EOF
1089 int main(void){ return 0; }
1090 EOF
1091 }
1092
1093 check_ldflags(){
1094     log check_ldflags "$@"
1095     test_ldflags "$@" && add_ldflags "$@"
1096 }
1097
1098 test_stripflags(){
1099     log test_stripflags "$@"
1100     # call check_cc to get a fresh TMPO
1101     check_cc <<EOF
1102 int main(void) { return 0; }
1103 EOF
1104     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1105 }
1106
1107 check_stripflags(){
1108     log check_stripflags "$@"
1109     test_stripflags "$@" && add_stripflags "$@"
1110 }
1111
1112 check_header(){
1113     log check_header "$@"
1114     headers=$1
1115     shift
1116     disable_sanitized $headers
1117     {
1118         for hdr in $headers; do
1119             print_include $hdr
1120         done
1121         echo "int x;"
1122     } | check_cpp "$@" && enable_sanitized $headers
1123 }
1124
1125 check_header_objcc(){
1126     log check_header_objcc "$@"
1127     rm -f -- "$TMPO"
1128     header=$1
1129     shift
1130     disable_sanitized $header
1131     {
1132        echo "#include <$header>"
1133        echo "int main(void) { return 0; }"
1134     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1135 }
1136
1137 check_apple_framework(){
1138     log check_apple_framework "$@"
1139     framework="$1"
1140     name="$(tolower $framework)"
1141     header="${framework}/${framework}.h"
1142     disable $name
1143     check_header_objcc $header &&
1144         enable $name && eval ${name}_extralibs='"-framework $framework"'
1145 }
1146
1147 check_func(){
1148     log check_func "$@"
1149     func=$1
1150     shift
1151     disable $func
1152     check_ld "cc" "$@" <<EOF && enable $func
1153 extern int $func();
1154 int main(void){ $func(); }
1155 EOF
1156 }
1157
1158 check_complexfunc(){
1159     log check_complexfunc "$@"
1160     func=$1
1161     narg=$2
1162     shift 2
1163     test $narg = 2 && args="f, g" || args="f * I"
1164     disable $func
1165     check_ld "cc" "$@" <<EOF && enable $func
1166 #include <complex.h>
1167 #include <math.h>
1168 float foo(complex float f, complex float g) { return $func($args); }
1169 int main(void){ return (int) foo; }
1170 EOF
1171 }
1172
1173 check_mathfunc(){
1174     log check_mathfunc "$@"
1175     func=$1
1176     narg=$2
1177     shift 2
1178     test $narg = 2 && args="f, g" || args="f"
1179     disable $func
1180     check_ld "cc" "$@" <<EOF && enable $func
1181 #include <math.h>
1182 float foo(float f, float g) { return $func($args); }
1183 int main(void){ return (int) foo; }
1184 EOF
1185 }
1186
1187 check_func_headers(){
1188     log check_func_headers "$@"
1189     headers=$1
1190     funcs=$2
1191     shift 2
1192     {
1193         for hdr in $headers; do
1194             print_include $hdr
1195         done
1196         echo "#include <stdint.h>"
1197         for func in $funcs; do
1198             echo "long check_$func(void) { return (long) $func; }"
1199         done
1200         echo "int main(void) { int ret = 0;"
1201         # LTO could optimize out the test functions without this
1202         for func in $funcs; do
1203             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1204         done
1205         echo "return ret; }"
1206     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1207 }
1208
1209 check_class_headers_cpp(){
1210     log check_class_headers_cpp "$@"
1211     headers=$1
1212     classes=$2
1213     shift 2
1214     {
1215         for hdr in $headers; do
1216             echo "#include <$hdr>"
1217         done
1218         echo "int main(void) { "
1219         i=1
1220         for class in $classes; do
1221             echo "$class obj$i;"
1222             i=$(expr $i + 1)
1223         done
1224         echo "return 0; }"
1225     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1226 }
1227
1228 check_cpp_condition(){
1229     log check_cpp_condition "$@"
1230     header=$1
1231     condition=$2
1232     shift 2
1233     check_cpp "$@" <<EOF
1234 #include <$header>
1235 #if !($condition)
1236 #error "unsatisfied condition: $condition"
1237 #endif
1238 EOF
1239 }
1240
1241 test_cflags_cc(){
1242     log test_cflags_cc "$@"
1243     flags=$1
1244     header=$2
1245     condition=$3
1246     shift 3
1247     set -- $($cflags_filter "$flags")
1248     check_cc "$@" <<EOF
1249 #include <$header>
1250 #if !($condition)
1251 #error "unsatisfied condition: $condition"
1252 #endif
1253 EOF
1254 }
1255
1256 check_lib(){
1257     log check_lib "$@"
1258     name="$1"
1259     headers="$2"
1260     funcs="$3"
1261     shift 3
1262     disable $name
1263     check_func_headers "$headers" "$funcs" "$@" &&
1264         enable $name && eval ${name}_extralibs="\$@"
1265 }
1266
1267 check_lib_cpp(){
1268     log check_lib_cpp "$@"
1269     name="$1"
1270     headers="$2"
1271     classes="$3"
1272     shift 3
1273     disable $name
1274     check_class_headers_cpp "$headers" "$classes" "$@" &&
1275         enable $name && eval ${name}_extralibs="\$@"
1276 }
1277
1278 test_pkg_config(){
1279     log test_pkg_config "$@"
1280     name="$1"
1281     pkg_version="$2"
1282     pkg="${2%% *}"
1283     headers="$3"
1284     funcs="$4"
1285     shift 4
1286     disable $name
1287     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1288     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1289     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1290     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1291         enable $name &&
1292         set_sanitized "${name}_cflags"    $pkg_cflags &&
1293         set_sanitized "${name}_extralibs" $pkg_libs
1294 }
1295
1296 check_pkg_config(){
1297     log check_pkg_config "$@"
1298     name="$1"
1299     test_pkg_config "$@" &&
1300         eval add_cflags \$${name}_cflags
1301 }
1302
1303 check_exec(){
1304     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1305 }
1306
1307 check_exec_crash(){
1308     log check_exec_crash "$@"
1309     code=$(cat)
1310
1311     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1312     # are safe but may not be available everywhere.  Thus we use
1313     # raise(SIGTERM) instead.  The check is run in a subshell so we
1314     # can redirect the "Terminated" message from the shell.  SIGBUS
1315     # is not defined by standard C so it is used conditionally.
1316
1317     (check_exec "$@") >> $logfile 2>&1 <<EOF
1318 #include <signal.h>
1319 static void sighandler(int sig){
1320     raise(SIGTERM);
1321 }
1322 int foo(void){
1323     $code
1324 }
1325 int (*func_ptr)(void) = foo;
1326 int main(void){
1327     signal(SIGILL, sighandler);
1328     signal(SIGFPE, sighandler);
1329     signal(SIGSEGV, sighandler);
1330 #ifdef SIGBUS
1331     signal(SIGBUS, sighandler);
1332 #endif
1333     return func_ptr();
1334 }
1335 EOF
1336 }
1337
1338 check_type(){
1339     log check_type "$@"
1340     headers=$1
1341     type=$2
1342     shift 2
1343     disable_sanitized "$type"
1344     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1345 }
1346
1347 check_struct(){
1348     log check_struct "$@"
1349     headers=$1
1350     struct=$2
1351     member=$3
1352     shift 3
1353     disable_sanitized "${struct}_${member}"
1354     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1355         enable_sanitized "${struct}_${member}"
1356 }
1357
1358 check_builtin(){
1359     log check_builtin "$@"
1360     name=$1
1361     headers=$2
1362     builtin=$3
1363     shift 3
1364     disable "$name"
1365     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1366 }
1367
1368 check_compile_assert(){
1369     log check_compile_assert "$@"
1370     name=$1
1371     headers=$2
1372     condition=$3
1373     shift 3
1374     disable "$name"
1375     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1376 }
1377
1378 require(){
1379     log require "$@"
1380     name_version="$1"
1381     name="${1%% *}"
1382     headers="$2"
1383     func="$3"
1384     shift 3
1385     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1386 }
1387
1388 require_cpp(){
1389     name="$1"
1390     headers="$2"
1391     classes="$3"
1392     shift 3
1393     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1394 }
1395
1396 require_header(){
1397     log require_header "$@"
1398     headers="$1"
1399     shift
1400     check_header "$headers" "$@" || die "ERROR: $headers not found"
1401 }
1402
1403 require_cpp_condition(){
1404     log require_cpp_condition "$@"
1405     header="$1"
1406     condition="$2"
1407     shift 2
1408     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1409 }
1410
1411 require_pkg_config(){
1412     log require_pkg_config "$@"
1413     pkg_version="$2"
1414     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1415 }
1416
1417 hostcc_e(){
1418     eval printf '%s\\n' $HOSTCC_E
1419 }
1420
1421 hostcc_o(){
1422     eval printf '%s\\n' $HOSTCC_O
1423 }
1424
1425 check_host_cc(){
1426     log check_host_cc "$@"
1427     cat > $TMPC
1428     log_file $TMPC
1429     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1430 }
1431
1432 check_host_cpp(){
1433     log check_host_cpp "$@"
1434     cat > $TMPC
1435     log_file $TMPC
1436     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1437 }
1438
1439 check_host_cppflags(){
1440     log check_host_cppflags "$@"
1441     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1442 #include <stdlib.h>
1443 EOF
1444 }
1445
1446 check_host_cflags(){
1447     log check_host_cflags "$@"
1448     set -- $($host_cflags_filter "$@")
1449     check_host_cc "$@" <<EOF && append host_cflags "$@"
1450 int x;
1451 EOF
1452 }
1453
1454 check_host_cpp_condition(){
1455     log check_host_cpp_condition "$@"
1456     header=$1
1457     condition=$2
1458     shift 2
1459     check_host_cpp "$@" <<EOF
1460 #include <$header>
1461 #if !($condition)
1462 #error "unsatisfied condition: $condition"
1463 #endif
1464 EOF
1465 }
1466
1467 cp_if_changed(){
1468     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1469     mkdir -p "$(dirname $2)"
1470     cp -f "$1" "$2"
1471 }
1472
1473 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1474 # system-dependent things.
1475
1476 AVCODEC_COMPONENTS="
1477     bsfs
1478     decoders
1479     encoders
1480     hwaccels
1481     parsers
1482 "
1483
1484 AVDEVICE_COMPONENTS="
1485     indevs
1486     outdevs
1487 "
1488
1489 AVFILTER_COMPONENTS="
1490     filters
1491 "
1492
1493 AVFORMAT_COMPONENTS="
1494     demuxers
1495     muxers
1496     protocols
1497 "
1498
1499 COMPONENT_LIST="
1500     $AVCODEC_COMPONENTS
1501     $AVDEVICE_COMPONENTS
1502     $AVFILTER_COMPONENTS
1503     $AVFORMAT_COMPONENTS
1504 "
1505
1506 EXAMPLE_LIST="
1507     avio_dir_cmd_example
1508     avio_reading_example
1509     decode_audio_example
1510     decode_video_example
1511     demuxing_decoding_example
1512     encode_audio_example
1513     encode_video_example
1514     extract_mvs_example
1515     filter_audio_example
1516     filtering_audio_example
1517     filtering_video_example
1518     http_multiclient_example
1519     hw_decode_example
1520     metadata_example
1521     muxing_example
1522     qsvdec_example
1523     remuxing_example
1524     resampling_audio_example
1525     scaling_video_example
1526     transcode_aac_example
1527     transcoding_example
1528     vaapi_encode_example
1529     vaapi_transcode_example
1530 "
1531
1532 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1533     alsa
1534     appkit
1535     avfoundation
1536     bzlib
1537     coreimage
1538     iconv
1539     libxcb
1540     libxcb_shm
1541     libxcb_shape
1542     libxcb_xfixes
1543     lzma
1544     schannel
1545     sdl2
1546     securetransport
1547     sndio
1548     xlib
1549     zlib
1550 "
1551
1552 EXTERNAL_LIBRARY_GPL_LIST="
1553     avisynth
1554     frei0r
1555     libcdio
1556     librubberband
1557     libvidstab
1558     libx264
1559     libx265
1560     libxavs
1561     libxvid
1562 "
1563
1564 EXTERNAL_LIBRARY_NONFREE_LIST="
1565     decklink
1566     libndi_newtek
1567     libfdk_aac
1568     openssl
1569     libtls
1570 "
1571
1572 EXTERNAL_LIBRARY_VERSION3_LIST="
1573     gmp
1574     libopencore_amrnb
1575     libopencore_amrwb
1576     libvmaf
1577     libvo_amrwbenc
1578     rkmpp
1579 "
1580
1581 EXTERNAL_LIBRARY_GPLV3_LIST="
1582     libsmbclient
1583 "
1584
1585 EXTERNAL_LIBRARY_LIST="
1586     $EXTERNAL_LIBRARY_GPL_LIST
1587     $EXTERNAL_LIBRARY_NONFREE_LIST
1588     $EXTERNAL_LIBRARY_VERSION3_LIST
1589     $EXTERNAL_LIBRARY_GPLV3_LIST
1590     chromaprint
1591     gcrypt
1592     gnutls
1593     jni
1594     ladspa
1595     libass
1596     libbluray
1597     libbs2b
1598     libcaca
1599     libcelt
1600     libdc1394
1601     libdrm
1602     libflite
1603     libfontconfig
1604     libfreetype
1605     libfribidi
1606     libgme
1607     libgsm
1608     libiec61883
1609     libilbc
1610     libjack
1611     libkvazaar
1612     libmodplug
1613     libmp3lame
1614     libmysofa
1615     libopencv
1616     libopenh264
1617     libopenjpeg
1618     libopenmpt
1619     libopus
1620     libpulse
1621     librsvg
1622     librtmp
1623     libshine
1624     libsmbclient
1625     libsnappy
1626     libsoxr
1627     libspeex
1628     libssh
1629     libtesseract
1630     libtheora
1631     libtwolame
1632     libv4l2
1633     libvorbis
1634     libvpx
1635     libwavpack
1636     libwebp
1637     libxml2
1638     libzimg
1639     libzmq
1640     libzvbi
1641     lv2
1642     mediacodec
1643     openal
1644     opengl
1645 "
1646
1647 HWACCEL_AUTODETECT_LIBRARY_LIST="
1648     amf
1649     audiotoolbox
1650     crystalhd
1651     cuda
1652     cuvid
1653     d3d11va
1654     dxva2
1655     nvdec
1656     nvenc
1657     vaapi
1658     vdpau
1659     videotoolbox
1660     v4l2_m2m
1661     xvmc
1662 "
1663
1664 # catchall list of things that require external libs to link
1665 EXTRALIBS_LIST="
1666     cpu_init
1667     cws2fws
1668 "
1669
1670 HWACCEL_LIBRARY_NONFREE_LIST="
1671     cuda_sdk
1672     libnpp
1673 "
1674
1675 HWACCEL_LIBRARY_LIST="
1676     $HWACCEL_LIBRARY_NONFREE_LIST
1677     libmfx
1678     mmal
1679     omx
1680     opencl
1681 "
1682
1683 DOCUMENT_LIST="
1684     doc
1685     htmlpages
1686     manpages
1687     podpages
1688     txtpages
1689 "
1690
1691 FEATURE_LIST="
1692     ftrapv
1693     gray
1694     hardcoded_tables
1695     omx_rpi
1696     runtime_cpudetect
1697     safe_bitstream_reader
1698     shared
1699     small
1700     static
1701     swscale_alpha
1702 "
1703
1704 LIBRARY_LIST="
1705     avcodec
1706     avdevice
1707     avfilter
1708     avformat
1709     avresample
1710     avutil
1711     postproc
1712     swresample
1713     swscale
1714 "
1715
1716 LICENSE_LIST="
1717     gpl
1718     nonfree
1719     version3
1720 "
1721
1722 PROGRAM_LIST="
1723     ffplay
1724     ffprobe
1725     ffmpeg
1726 "
1727
1728 SUBSYSTEM_LIST="
1729     dct
1730     dwt
1731     error_resilience
1732     faan
1733     fast_unaligned
1734     fft
1735     lsp
1736     lzo
1737     mdct
1738     pixelutils
1739     network
1740     rdft
1741 "
1742
1743 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1744 CONFIG_LIST="
1745     $DOCUMENT_LIST
1746     $EXAMPLE_LIST
1747     $EXTERNAL_LIBRARY_LIST
1748     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1749     $HWACCEL_LIBRARY_LIST
1750     $HWACCEL_AUTODETECT_LIBRARY_LIST
1751     $FEATURE_LIST
1752     $LICENSE_LIST
1753     $LIBRARY_LIST
1754     $PROGRAM_LIST
1755     $SUBSYSTEM_LIST
1756     autodetect
1757     fontconfig
1758     linux_perf
1759     memory_poisoning
1760     neon_clobber_test
1761     ossfuzz
1762     pic
1763     thumb
1764     valgrind_backtrace
1765     xmm_clobber_test
1766     $COMPONENT_LIST
1767 "
1768
1769 THREADS_LIST="
1770     pthreads
1771     os2threads
1772     w32threads
1773 "
1774
1775 ATOMICS_LIST="
1776     atomics_gcc
1777     atomics_suncc
1778     atomics_win32
1779 "
1780
1781 AUTODETECT_LIBS="
1782     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1783     $HWACCEL_AUTODETECT_LIBRARY_LIST
1784     $THREADS_LIST
1785 "
1786
1787 ARCH_LIST="
1788     aarch64
1789     alpha
1790     arm
1791     avr32
1792     avr32_ap
1793     avr32_uc
1794     bfin
1795     ia64
1796     m68k
1797     mips
1798     mips64
1799     parisc
1800     ppc
1801     ppc64
1802     s390
1803     sh4
1804     sparc
1805     sparc64
1806     tilegx
1807     tilepro
1808     tomi
1809     x86
1810     x86_32
1811     x86_64
1812 "
1813
1814 ARCH_EXT_LIST_ARM="
1815     armv5te
1816     armv6
1817     armv6t2
1818     armv8
1819     neon
1820     vfp
1821     vfpv3
1822     setend
1823 "
1824
1825 ARCH_EXT_LIST_MIPS="
1826     mipsfpu
1827     mips32r2
1828     mips32r5
1829     mips64r2
1830     mips32r6
1831     mips64r6
1832     mipsdsp
1833     mipsdspr2
1834     msa
1835 "
1836
1837 ARCH_EXT_LIST_LOONGSON="
1838     loongson2
1839     loongson3
1840     mmi
1841 "
1842
1843 ARCH_EXT_LIST_X86_SIMD="
1844     aesni
1845     amd3dnow
1846     amd3dnowext
1847     avx
1848     avx2
1849     avx512
1850     fma3
1851     fma4
1852     mmx
1853     mmxext
1854     sse
1855     sse2
1856     sse3
1857     sse4
1858     sse42
1859     ssse3
1860     xop
1861 "
1862
1863 ARCH_EXT_LIST_PPC="
1864     altivec
1865     dcbzl
1866     ldbrx
1867     power8
1868     ppc4xx
1869     vsx
1870 "
1871
1872 ARCH_EXT_LIST_X86="
1873     $ARCH_EXT_LIST_X86_SIMD
1874     cpunop
1875     i686
1876 "
1877
1878 ARCH_EXT_LIST="
1879     $ARCH_EXT_LIST_ARM
1880     $ARCH_EXT_LIST_PPC
1881     $ARCH_EXT_LIST_X86
1882     $ARCH_EXT_LIST_MIPS
1883     $ARCH_EXT_LIST_LOONGSON
1884 "
1885
1886 ARCH_FEATURES="
1887     aligned_stack
1888     fast_64bit
1889     fast_clz
1890     fast_cmov
1891     local_aligned
1892     simd_align_16
1893     simd_align_32
1894     simd_align_64
1895 "
1896
1897 BUILTIN_LIST="
1898     atomic_cas_ptr
1899     machine_rw_barrier
1900     MemoryBarrier
1901     mm_empty
1902     rdtsc
1903     sem_timedwait
1904     sync_val_compare_and_swap
1905 "
1906 HAVE_LIST_CMDLINE="
1907     inline_asm
1908     symver
1909     x86asm
1910 "
1911
1912 HAVE_LIST_PUB="
1913     bigendian
1914     fast_unaligned
1915 "
1916
1917 HEADERS_LIST="
1918     arpa_inet_h
1919     asm_types_h
1920     cdio_paranoia_h
1921     cdio_paranoia_paranoia_h
1922     cuda_h
1923     dispatch_dispatch_h
1924     dev_bktr_ioctl_bt848_h
1925     dev_bktr_ioctl_meteor_h
1926     dev_ic_bt8xx_h
1927     dev_video_bktr_ioctl_bt848_h
1928     dev_video_meteor_ioctl_meteor_h
1929     direct_h
1930     dirent_h
1931     dxgidebug_h
1932     dxva_h
1933     ES2_gl_h
1934     gsm_h
1935     io_h
1936     machine_ioctl_bt848_h
1937     machine_ioctl_meteor_h
1938     malloc_h
1939     opencv2_core_core_c_h
1940     OpenGL_gl3_h
1941     poll_h
1942     sys_param_h
1943     sys_resource_h
1944     sys_select_h
1945     sys_soundcard_h
1946     sys_time_h
1947     sys_un_h
1948     sys_videoio_h
1949     termios_h
1950     udplite_h
1951     unistd_h
1952     valgrind_valgrind_h
1953     windows_h
1954     winsock2_h
1955 "
1956
1957 INTRINSICS_LIST="
1958     intrinsics_neon
1959 "
1960
1961 COMPLEX_FUNCS="
1962     cabs
1963     cexp
1964 "
1965
1966 MATH_FUNCS="
1967     atanf
1968     atan2f
1969     cbrt
1970     cbrtf
1971     copysign
1972     cosf
1973     erf
1974     exp2
1975     exp2f
1976     expf
1977     hypot
1978     isfinite
1979     isinf
1980     isnan
1981     ldexpf
1982     llrint
1983     llrintf
1984     log2
1985     log2f
1986     log10f
1987     lrint
1988     lrintf
1989     powf
1990     rint
1991     round
1992     roundf
1993     sinf
1994     trunc
1995     truncf
1996 "
1997
1998 SYSTEM_FEATURES="
1999     dos_paths
2000     libc_msvcrt
2001     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2002     section_data_rel_ro
2003     threads
2004     uwp
2005     winrt
2006 "
2007
2008 SYSTEM_FUNCS="
2009     access
2010     aligned_malloc
2011     arc4random
2012     clock_gettime
2013     closesocket
2014     CommandLineToArgvW
2015     fcntl
2016     getaddrinfo
2017     gethrtime
2018     getopt
2019     GetProcessAffinityMask
2020     GetProcessMemoryInfo
2021     GetProcessTimes
2022     getrusage
2023     GetSystemTimeAsFileTime
2024     gettimeofday
2025     glob
2026     glXGetProcAddress
2027     gmtime_r
2028     inet_aton
2029     isatty
2030     kbhit
2031     localtime_r
2032     lstat
2033     lzo1x_999_compress
2034     mach_absolute_time
2035     MapViewOfFile
2036     memalign
2037     mkstemp
2038     mmap
2039     mprotect
2040     nanosleep
2041     PeekNamedPipe
2042     posix_memalign
2043     pthread_cancel
2044     sched_getaffinity
2045     SecItemImport
2046     SetConsoleTextAttribute
2047     SetConsoleCtrlHandler
2048     setmode
2049     setrlimit
2050     Sleep
2051     strerror_r
2052     sysconf
2053     sysctl
2054     usleep
2055     UTGetOSTypeFromString
2056     VirtualAlloc
2057     wglGetProcAddress
2058 "
2059
2060 SYSTEM_LIBRARIES="
2061     vaapi_drm
2062     vaapi_x11
2063     vdpau_x11
2064     wincrypt
2065 "
2066
2067 TOOLCHAIN_FEATURES="
2068     as_arch_directive
2069     as_fpu_directive
2070     as_func
2071     as_object_arch
2072     asm_mod_q
2073     blocks_extension
2074     ebp_available
2075     ebx_available
2076     gnu_as
2077     gnu_windres
2078     ibm_asm
2079     inline_asm_direct_symbol_refs
2080     inline_asm_labels
2081     inline_asm_nonlocal_labels
2082     pragma_deprecated
2083     rsync_contimeout
2084     symver_asm_label
2085     symver_gnu_asm
2086     vfp_args
2087     xform_asm
2088     xmm_clobbers
2089 "
2090
2091 TYPES_LIST="
2092     kCMVideoCodecType_HEVC
2093     socklen_t
2094     struct_addrinfo
2095     struct_group_source_req
2096     struct_ip_mreq_source
2097     struct_ipv6_mreq
2098     struct_msghdr_msg_flags
2099     struct_pollfd
2100     struct_rusage_ru_maxrss
2101     struct_sctp_event_subscribe
2102     struct_sockaddr_in6
2103     struct_sockaddr_sa_len
2104     struct_sockaddr_storage
2105     struct_stat_st_mtim_tv_nsec
2106     struct_v4l2_frmivalenum_discrete
2107 "
2108
2109 HAVE_LIST="
2110     $ARCH_EXT_LIST
2111     $(add_suffix _external $ARCH_EXT_LIST)
2112     $(add_suffix _inline   $ARCH_EXT_LIST)
2113     $ARCH_FEATURES
2114     $BUILTIN_LIST
2115     $COMPLEX_FUNCS
2116     $HAVE_LIST_CMDLINE
2117     $HAVE_LIST_PUB
2118     $HEADERS_LIST
2119     $INTRINSICS_LIST
2120     $MATH_FUNCS
2121     $SYSTEM_FEATURES
2122     $SYSTEM_FUNCS
2123     $SYSTEM_LIBRARIES
2124     $THREADS_LIST
2125     $TOOLCHAIN_FEATURES
2126     $TYPES_LIST
2127     makeinfo
2128     makeinfo_html
2129     opencl_d3d11
2130     opencl_drm_arm
2131     opencl_dxva2
2132     opencl_vaapi_beignet
2133     opencl_vaapi_intel_media
2134     perl
2135     pod2man
2136     texi2html
2137 "
2138
2139 # options emitted with CONFIG_ prefix but not available on the command line
2140 CONFIG_EXTRA="
2141     aandcttables
2142     ac3dsp
2143     adts_header
2144     audio_frame_queue
2145     audiodsp
2146     blockdsp
2147     bswapdsp
2148     cabac
2149     cbs
2150     cbs_h264
2151     cbs_h265
2152     cbs_mpeg2
2153     dirac_parse
2154     dvprofile
2155     exif
2156     faandct
2157     faanidct
2158     fdctdsp
2159     flacdsp
2160     fmtconvert
2161     frame_thread_encoder
2162     g722dsp
2163     golomb
2164     gplv3
2165     h263dsp
2166     h264chroma
2167     h264dsp
2168     h264parse
2169     h264pred
2170     h264qpel
2171     hevcparse
2172     hpeldsp
2173     huffman
2174     huffyuvdsp
2175     huffyuvencdsp
2176     idctdsp
2177     iirfilter
2178     mdct15
2179     intrax8
2180     iso_media
2181     ividsp
2182     jpegtables
2183     lgplv3
2184     libx262
2185     llauddsp
2186     llviddsp
2187     llvidencdsp
2188     lpc
2189     lzf
2190     me_cmp
2191     mpeg_er
2192     mpegaudio
2193     mpegaudiodsp
2194     mpegaudioheader
2195     mpegvideo
2196     mpegvideoenc
2197     mss34dsp
2198     pixblockdsp
2199     qpeldsp
2200     qsv
2201     qsvdec
2202     qsvenc
2203     qsvvpp
2204     rangecoder
2205     riffdec
2206     riffenc
2207     rtpdec
2208     rtpenc_chain
2209     rv34dsp
2210     sinewin
2211     snappy
2212     srtp
2213     startcode
2214     texturedsp
2215     texturedspenc
2216     tpeldsp
2217     vaapi_1
2218     vaapi_encode
2219     vc1dsp
2220     videodsp
2221     vp3dsp
2222     vp56dsp
2223     vp8dsp
2224     wma_freqs
2225     wmv2dsp
2226 "
2227
2228 CMDLINE_SELECT="
2229     $ARCH_EXT_LIST
2230     $CONFIG_LIST
2231     $HAVE_LIST_CMDLINE
2232     $THREADS_LIST
2233     asm
2234     cross_compile
2235     debug
2236     extra_warnings
2237     logging
2238     lto
2239     optimizations
2240     rpath
2241     stripping
2242 "
2243
2244 PATHS_LIST="
2245     bindir
2246     datadir
2247     docdir
2248     incdir
2249     libdir
2250     mandir
2251     pkgconfigdir
2252     prefix
2253     shlibdir
2254     install_name_dir
2255 "
2256
2257 CMDLINE_SET="
2258     $PATHS_LIST
2259     ar
2260     arch
2261     as
2262     assert_level
2263     build_suffix
2264     cc
2265     objcc
2266     cpu
2267     cross_prefix
2268     custom_allocator
2269     cxx
2270     dep_cc
2271     doxygen
2272     env
2273     extra_version
2274     gas
2275     host_cc
2276     host_cflags
2277     host_extralibs
2278     host_ld
2279     host_ldflags
2280     host_os
2281     ignore_tests
2282     install
2283     ld
2284     ln_s
2285     logfile
2286     malloc_prefix
2287     nm
2288     optflags
2289     nvccflags
2290     pkg_config
2291     pkg_config_flags
2292     progs_suffix
2293     random_seed
2294     ranlib
2295     samples
2296     strip
2297     sws_max_filter_size
2298     sysinclude
2299     sysroot
2300     target_exec
2301     target_os
2302     target_path
2303     target_samples
2304     tempprefix
2305     toolchain
2306     valgrind
2307     x86asmexe
2308 "
2309
2310 CMDLINE_APPEND="
2311     extra_cflags
2312     extra_cxxflags
2313     extra_objcflags
2314     host_cppflags
2315 "
2316
2317 # code dependency declarations
2318
2319 # architecture extensions
2320
2321 armv5te_deps="arm"
2322 armv6_deps="arm"
2323 armv6t2_deps="arm"
2324 armv8_deps="aarch64"
2325 neon_deps_any="aarch64 arm"
2326 intrinsics_neon_deps="neon"
2327 vfp_deps_any="aarch64 arm"
2328 vfpv3_deps="vfp"
2329 setend_deps="arm"
2330
2331 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2332
2333 altivec_deps="ppc"
2334 dcbzl_deps="ppc"
2335 ldbrx_deps="ppc"
2336 ppc4xx_deps="ppc"
2337 vsx_deps="altivec"
2338 power8_deps="vsx"
2339
2340 loongson2_deps="mips"
2341 loongson3_deps="mips"
2342 mips32r2_deps="mips"
2343 mips32r5_deps="mips"
2344 mips32r6_deps="mips"
2345 mips64r2_deps="mips"
2346 mips64r6_deps="mips"
2347 mipsfpu_deps="mips"
2348 mipsdsp_deps="mips"
2349 mipsdspr2_deps="mips"
2350 mmi_deps="mips"
2351 msa_deps="mipsfpu"
2352
2353 cpunop_deps="i686"
2354 x86_64_select="i686"
2355 x86_64_suggest="fast_cmov"
2356
2357 amd3dnow_deps="mmx"
2358 amd3dnowext_deps="amd3dnow"
2359 i686_deps="x86"
2360 mmx_deps="x86"
2361 mmxext_deps="mmx"
2362 sse_deps="mmxext"
2363 sse2_deps="sse"
2364 sse3_deps="sse2"
2365 ssse3_deps="sse3"
2366 sse4_deps="ssse3"
2367 sse42_deps="sse4"
2368 aesni_deps="sse42"
2369 avx_deps="sse42"
2370 xop_deps="avx"
2371 fma3_deps="avx"
2372 fma4_deps="avx"
2373 avx2_deps="avx"
2374 avx512_deps="avx2"
2375
2376 mmx_external_deps="x86asm"
2377 mmx_inline_deps="inline_asm x86"
2378 mmx_suggest="mmx_external mmx_inline"
2379
2380 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2381     eval dep=\$${ext}_deps
2382     eval ${ext}_external_deps='"${dep}_external"'
2383     eval ${ext}_inline_deps='"${dep}_inline"'
2384     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2385 done
2386
2387 aligned_stack_if_any="aarch64 ppc x86"
2388 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2389 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2390 fast_unaligned_if_any="aarch64 ppc x86"
2391 simd_align_16_if_any="altivec neon sse"
2392 simd_align_32_if_any="avx"
2393 simd_align_64_if_any="avx512"
2394
2395 # system capabilities
2396 symver_if_any="symver_asm_label symver_gnu_asm"
2397 valgrind_backtrace_conflict="optimizations"
2398 valgrind_backtrace_deps="valgrind_valgrind_h"
2399
2400 # threading support
2401 atomics_gcc_if="sync_val_compare_and_swap"
2402 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2403 atomics_win32_if="MemoryBarrier"
2404 atomics_native_if_any="$ATOMICS_LIST"
2405 w32threads_deps="atomics_native"
2406 threads_if_any="$THREADS_LIST"
2407
2408 # subsystems
2409 cbs_h264_select="cbs golomb"
2410 cbs_h265_select="cbs golomb"
2411 cbs_mpeg2_select="cbs"
2412 dct_select="rdft"
2413 dirac_parse_select="golomb"
2414 error_resilience_select="me_cmp"
2415 faandct_deps="faan"
2416 faandct_select="fdctdsp"
2417 faanidct_deps="faan"
2418 faanidct_select="idctdsp"
2419 h264dsp_select="startcode"
2420 hevcparse_select="golomb"
2421 frame_thread_encoder_deps="encoders threads"
2422 intrax8_select="blockdsp idctdsp"
2423 mdct_select="fft"
2424 mdct15_select="fft"
2425 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2426 mpeg_er_select="error_resilience"
2427 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2428 mpegaudiodsp_select="dct"
2429 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2430 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2431 vc1dsp_select="h264chroma qpeldsp startcode"
2432 rdft_select="fft"
2433
2434 # decoders / encoders
2435 aac_decoder_select="adts_header mdct15 mdct sinewin"
2436 aac_fixed_decoder_select="mdct sinewin"
2437 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2438 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2439 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2440 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2441 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2442 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2443 adpcm_g722_decoder_select="g722dsp"
2444 adpcm_g722_encoder_select="g722dsp"
2445 aic_decoder_select="golomb idctdsp"
2446 alac_encoder_select="lpc"
2447 als_decoder_select="bswapdsp"
2448 amrnb_decoder_select="lsp"
2449 amrwb_decoder_select="lsp"
2450 amv_decoder_select="sp5x_decoder exif"
2451 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2452 ape_decoder_select="bswapdsp llauddsp"
2453 apng_decoder_deps="zlib"
2454 apng_encoder_deps="zlib"
2455 apng_encoder_select="llvidencdsp"
2456 aptx_decoder_select="audio_frame_queue"
2457 aptx_encoder_select="audio_frame_queue"
2458 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2459 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2460 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2461 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2462 atrac1_decoder_select="mdct sinewin"
2463 atrac3_decoder_select="mdct"
2464 atrac3p_decoder_select="mdct sinewin"
2465 avrn_decoder_select="exif jpegtables"
2466 bink_decoder_select="blockdsp hpeldsp"
2467 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2468 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2469 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2470 clearvideo_decoder_select="idctdsp"
2471 cllc_decoder_select="bswapdsp"
2472 comfortnoise_encoder_select="lpc"
2473 cook_decoder_select="audiodsp mdct sinewin"
2474 cscd_decoder_select="lzo"
2475 cscd_decoder_suggest="zlib"
2476 dca_decoder_select="mdct"
2477 dds_decoder_select="texturedsp"
2478 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2479 dnxhd_decoder_select="blockdsp idctdsp"
2480 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2481 dolby_e_decoder_select="mdct"
2482 dvvideo_decoder_select="dvprofile idctdsp"
2483 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2484 dxa_decoder_deps="zlib"
2485 dxv_decoder_select="lzf texturedsp"
2486 eac3_decoder_select="ac3_decoder"
2487 eac3_encoder_select="ac3_encoder"
2488 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2489 eatgq_decoder_select="aandcttables"
2490 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2491 exr_decoder_deps="zlib"
2492 ffv1_decoder_select="rangecoder"
2493 ffv1_encoder_select="rangecoder"
2494 ffvhuff_decoder_select="huffyuv_decoder"
2495 ffvhuff_encoder_select="huffyuv_encoder"
2496 fic_decoder_select="golomb"
2497 flac_decoder_select="flacdsp"
2498 flac_encoder_select="bswapdsp flacdsp lpc"
2499 flashsv2_decoder_deps="zlib"
2500 flashsv2_encoder_deps="zlib"
2501 flashsv_decoder_deps="zlib"
2502 flashsv_encoder_deps="zlib"
2503 flv_decoder_select="h263_decoder"
2504 flv_encoder_select="h263_encoder"
2505 fourxm_decoder_select="blockdsp bswapdsp"
2506 fraps_decoder_select="bswapdsp huffman"
2507 g2m_decoder_deps="zlib"
2508 g2m_decoder_select="blockdsp idctdsp jpegtables"
2509 g729_decoder_select="audiodsp"
2510 h261_decoder_select="mpegvideo"
2511 h261_encoder_select="aandcttables mpegvideoenc"
2512 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2513 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2514 h263i_decoder_select="h263_decoder"
2515 h263p_decoder_select="h263_decoder"
2516 h263p_encoder_select="h263_encoder"
2517 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2518 h264_decoder_suggest="error_resilience"
2519 hap_decoder_select="snappy texturedsp"
2520 hap_encoder_deps="libsnappy"
2521 hap_encoder_select="texturedspenc"
2522 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2523 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2524 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2525 iac_decoder_select="imc_decoder"
2526 imc_decoder_select="bswapdsp fft mdct sinewin"
2527 indeo3_decoder_select="hpeldsp"
2528 indeo4_decoder_select="ividsp"
2529 indeo5_decoder_select="ividsp"
2530 interplay_video_decoder_select="hpeldsp"
2531 jpegls_decoder_select="mjpeg_decoder"
2532 jv_decoder_select="blockdsp"
2533 lagarith_decoder_select="llviddsp"
2534 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2535 magicyuv_decoder_select="llviddsp"
2536 magicyuv_encoder_select="llvidencdsp"
2537 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2538 metasound_decoder_select="lsp mdct sinewin"
2539 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2540 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2541 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2542 mjpegb_decoder_select="mjpeg_decoder"
2543 mlp_decoder_select="mlp_parser"
2544 mlp_encoder_select="lpc"
2545 motionpixels_decoder_select="bswapdsp"
2546 mp1_decoder_select="mpegaudio"
2547 mp1float_decoder_select="mpegaudio"
2548 mp2_decoder_select="mpegaudio"
2549 mp2float_decoder_select="mpegaudio"
2550 mp3_decoder_select="mpegaudio"
2551 mp3adu_decoder_select="mpegaudio"
2552 mp3adufloat_decoder_select="mpegaudio"
2553 mp3float_decoder_select="mpegaudio"
2554 mp3on4_decoder_select="mpegaudio"
2555 mp3on4float_decoder_select="mpegaudio"
2556 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2557 mpc8_decoder_select="mpegaudiodsp"
2558 mpegvideo_decoder_select="mpegvideo"
2559 mpeg1video_decoder_select="mpegvideo"
2560 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2561 mpeg2video_decoder_select="mpegvideo"
2562 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2563 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2564 mpeg4_encoder_select="h263_encoder"
2565 msa1_decoder_select="mss34dsp"
2566 mscc_decoder_deps="zlib"
2567 msmpeg4v1_decoder_select="h263_decoder"
2568 msmpeg4v2_decoder_select="h263_decoder"
2569 msmpeg4v2_encoder_select="h263_encoder"
2570 msmpeg4v3_decoder_select="h263_decoder"
2571 msmpeg4v3_encoder_select="h263_encoder"
2572 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2573 mts2_decoder_select="mss34dsp"
2574 mxpeg_decoder_select="mjpeg_decoder"
2575 nellymoser_decoder_select="mdct sinewin"
2576 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2577 nuv_decoder_select="idctdsp lzo"
2578 on2avc_decoder_select="mdct"
2579 opus_decoder_deps="swresample"
2580 opus_decoder_select="mdct15"
2581 opus_encoder_select="audio_frame_queue mdct15"
2582 png_decoder_deps="zlib"
2583 png_encoder_deps="zlib"
2584 png_encoder_select="llvidencdsp"
2585 prores_decoder_select="blockdsp idctdsp"
2586 prores_encoder_select="fdctdsp"
2587 qcelp_decoder_select="lsp"
2588 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2589 ra_144_decoder_select="audiodsp"
2590 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2591 ralf_decoder_select="golomb"
2592 rawvideo_decoder_select="bswapdsp"
2593 rscc_decoder_deps="zlib"
2594 rtjpeg_decoder_select="me_cmp"
2595 rv10_decoder_select="h263_decoder"
2596 rv10_encoder_select="h263_encoder"
2597 rv20_decoder_select="h263_decoder"
2598 rv20_encoder_select="h263_encoder"
2599 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2600 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2601 screenpresso_decoder_deps="zlib"
2602 shorten_decoder_select="bswapdsp"
2603 sipr_decoder_select="lsp"
2604 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2605 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2606 sonic_decoder_select="golomb rangecoder"
2607 sonic_encoder_select="golomb rangecoder"
2608 sonic_ls_encoder_select="golomb rangecoder"
2609 sp5x_decoder_select="mjpeg_decoder"
2610 srgc_decoder_deps="zlib"
2611 svq1_decoder_select="hpeldsp"
2612 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2613 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2614 svq3_decoder_suggest="zlib"
2615 tak_decoder_select="audiodsp"
2616 tdsc_decoder_deps="zlib"
2617 tdsc_decoder_select="mjpeg_decoder"
2618 theora_decoder_select="vp3_decoder"
2619 thp_decoder_select="mjpeg_decoder"
2620 tiff_decoder_suggest="zlib lzma"
2621 tiff_encoder_suggest="zlib"
2622 truehd_decoder_select="mlp_parser"
2623 truehd_encoder_select="lpc"
2624 truemotion2_decoder_select="bswapdsp"
2625 truespeech_decoder_select="bswapdsp"
2626 tscc_decoder_deps="zlib"
2627 twinvq_decoder_select="mdct lsp sinewin"
2628 txd_decoder_select="texturedsp"
2629 utvideo_decoder_select="bswapdsp llviddsp"
2630 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2631 vble_decoder_select="llviddsp"
2632 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2633 vc1image_decoder_select="vc1_decoder"
2634 vorbis_decoder_select="mdct"
2635 vorbis_encoder_select="mdct"
2636 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2637 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2638 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2639 vp6a_decoder_select="vp6_decoder"
2640 vp6f_decoder_select="vp6_decoder"
2641 vp7_decoder_select="h264pred videodsp vp8dsp"
2642 vp8_decoder_select="h264pred videodsp vp8dsp"
2643 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2644 webp_decoder_select="vp8_decoder exif"
2645 wmalossless_decoder_select="llauddsp"
2646 wmapro_decoder_select="mdct sinewin wma_freqs"
2647 wmav1_decoder_select="mdct sinewin wma_freqs"
2648 wmav1_encoder_select="mdct sinewin wma_freqs"
2649 wmav2_decoder_select="mdct sinewin wma_freqs"
2650 wmav2_encoder_select="mdct sinewin wma_freqs"
2651 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2652 wmv1_decoder_select="h263_decoder"
2653 wmv1_encoder_select="h263_encoder"
2654 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2655 wmv2_encoder_select="h263_encoder wmv2dsp"
2656 wmv3_decoder_select="vc1_decoder"
2657 wmv3image_decoder_select="wmv3_decoder"
2658 xma1_decoder_select="wmapro_decoder"
2659 xma2_decoder_select="wmapro_decoder"
2660 zerocodec_decoder_deps="zlib"
2661 zlib_decoder_deps="zlib"
2662 zlib_encoder_deps="zlib"
2663 zmbv_decoder_deps="zlib"
2664 zmbv_encoder_deps="zlib"
2665
2666 # hardware accelerators
2667 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2668 cuda_deps_any="libdl LoadLibrary"
2669 cuvid_deps="cuda"
2670 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2671 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2672 nvdec_deps="cuda"
2673 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2674 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2675 xvmc_deps="X11_extensions_XvMClib_h"
2676
2677 h263_vaapi_hwaccel_deps="vaapi"
2678 h263_vaapi_hwaccel_select="h263_decoder"
2679 h263_videotoolbox_hwaccel_deps="videotoolbox"
2680 h263_videotoolbox_hwaccel_select="h263_decoder"
2681 h264_d3d11va_hwaccel_deps="d3d11va"
2682 h264_d3d11va_hwaccel_select="h264_decoder"
2683 h264_d3d11va2_hwaccel_deps="d3d11va"
2684 h264_d3d11va2_hwaccel_select="h264_decoder"
2685 h264_dxva2_hwaccel_deps="dxva2"
2686 h264_dxva2_hwaccel_select="h264_decoder"
2687 h264_nvdec_hwaccel_deps="nvdec"
2688 h264_nvdec_hwaccel_select="h264_decoder"
2689 h264_vaapi_hwaccel_deps="vaapi"
2690 h264_vaapi_hwaccel_select="h264_decoder"
2691 h264_vdpau_hwaccel_deps="vdpau"
2692 h264_vdpau_hwaccel_select="h264_decoder"
2693 h264_videotoolbox_hwaccel_deps="videotoolbox"
2694 h264_videotoolbox_hwaccel_select="h264_decoder"
2695 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2696 hevc_d3d11va_hwaccel_select="hevc_decoder"
2697 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2698 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2699 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2700 hevc_dxva2_hwaccel_select="hevc_decoder"
2701 hevc_nvdec_hwaccel_deps="nvdec"
2702 hevc_nvdec_hwaccel_select="hevc_decoder"
2703 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2704 hevc_vaapi_hwaccel_select="hevc_decoder"
2705 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2706 hevc_vdpau_hwaccel_select="hevc_decoder"
2707 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2708 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2709 mpeg_xvmc_hwaccel_deps="xvmc"
2710 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2711 mpeg1_nvdec_hwaccel_deps="nvdec"
2712 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2713 mpeg1_vdpau_hwaccel_deps="vdpau"
2714 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2715 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2716 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2717 mpeg1_xvmc_hwaccel_deps="xvmc"
2718 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2719 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2720 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2721 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2722 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_dxva2_hwaccel_deps="dxva2"
2724 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_nvdec_hwaccel_deps="nvdec"
2726 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_vaapi_hwaccel_deps="vaapi"
2728 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_vdpau_hwaccel_deps="vdpau"
2730 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2732 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2733 mpeg2_xvmc_hwaccel_deps="xvmc"
2734 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2735 mpeg4_nvdec_hwaccel_deps="nvdec"
2736 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2737 mpeg4_vaapi_hwaccel_deps="vaapi"
2738 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2739 mpeg4_vdpau_hwaccel_deps="vdpau"
2740 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2741 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2742 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2743 vc1_d3d11va_hwaccel_deps="d3d11va"
2744 vc1_d3d11va_hwaccel_select="vc1_decoder"
2745 vc1_d3d11va2_hwaccel_deps="d3d11va"
2746 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2747 vc1_dxva2_hwaccel_deps="dxva2"
2748 vc1_dxva2_hwaccel_select="vc1_decoder"
2749 vc1_nvdec_hwaccel_deps="nvdec"
2750 vc1_nvdec_hwaccel_select="vc1_decoder"
2751 vc1_vaapi_hwaccel_deps="vaapi"
2752 vc1_vaapi_hwaccel_select="vc1_decoder"
2753 vc1_vdpau_hwaccel_deps="vdpau"
2754 vc1_vdpau_hwaccel_select="vc1_decoder"
2755 vp8_nvdec_hwaccel_deps="nvdec"
2756 vp8_nvdec_hwaccel_select="vp8_decoder"
2757 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2758 vp8_vaapi_hwaccel_select="vp8_decoder"
2759 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2760 vp9_d3d11va_hwaccel_select="vp9_decoder"
2761 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2762 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2763 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2764 vp9_dxva2_hwaccel_select="vp9_decoder"
2765 vp9_nvdec_hwaccel_deps="nvdec"
2766 vp9_nvdec_hwaccel_select="vp9_decoder"
2767 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2768 vp9_vaapi_hwaccel_select="vp9_decoder"
2769 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2770 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2771 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2772 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2773 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2774 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2775
2776 # hardware-accelerated codecs
2777 omx_deps="libdl pthreads"
2778 omx_rpi_select="omx"
2779 qsv_deps="libmfx"
2780 qsvdec_select="qsv"
2781 qsvenc_select="qsv"
2782 qsvvpp_select="qsv"
2783 vaapi_encode_deps="vaapi"
2784 v4l2_m2m_deps_any="linux_videodev2_h"
2785
2786 hwupload_cuda_filter_deps="cuda"
2787 scale_npp_filter_deps="cuda libnpp"
2788 scale_cuda_filter_deps="cuda_sdk"
2789 thumbnail_cuda_filter_deps="cuda_sdk"
2790
2791 amf_deps_any="libdl LoadLibrary"
2792 nvenc_deps="cuda"
2793 nvenc_deps_any="libdl LoadLibrary"
2794 nvenc_encoder_deps="nvenc"
2795
2796 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2797 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2798 h264_amf_encoder_deps="amf"
2799 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2800 h264_cuvid_decoder_deps="cuvid"
2801 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2802 h264_mediacodec_decoder_deps="mediacodec"
2803 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2804 h264_mmal_decoder_deps="mmal"
2805 h264_nvenc_encoder_deps="nvenc"
2806 h264_omx_encoder_deps="omx"
2807 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2808 h264_qsv_encoder_select="qsvenc"
2809 h264_rkmpp_decoder_deps="rkmpp"
2810 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2811 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2812 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2813 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2814 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2815 hevc_amf_encoder_deps="amf"
2816 hevc_cuvid_decoder_deps="cuvid"
2817 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2818 hevc_mediacodec_decoder_deps="mediacodec"
2819 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2820 hevc_nvenc_encoder_deps="nvenc"
2821 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2822 hevc_qsv_encoder_select="hevcparse qsvenc"
2823 hevc_rkmpp_decoder_deps="rkmpp"
2824 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2825 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2826 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2827 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2828 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2829 mjpeg_cuvid_decoder_deps="cuvid"
2830 mjpeg_qsv_encoder_deps="libmfx"
2831 mjpeg_qsv_encoder_select="qsvenc"
2832 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2833 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2834 mpeg1_cuvid_decoder_deps="cuvid"
2835 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2836 mpeg2_crystalhd_decoder_select="crystalhd"
2837 mpeg2_cuvid_decoder_deps="cuvid"
2838 mpeg2_mmal_decoder_deps="mmal"
2839 mpeg2_mediacodec_decoder_deps="mediacodec"
2840 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2841 mpeg2_qsv_encoder_select="qsvenc"
2842 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2843 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2844 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2845 mpeg4_crystalhd_decoder_select="crystalhd"
2846 mpeg4_cuvid_decoder_deps="cuvid"
2847 mpeg4_mediacodec_decoder_deps="mediacodec"
2848 mpeg4_mmal_decoder_deps="mmal"
2849 mpeg4_omx_encoder_deps="omx"
2850 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2851 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2852 msmpeg4_crystalhd_decoder_select="crystalhd"
2853 nvenc_h264_encoder_select="h264_nvenc_encoder"
2854 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2855 vc1_crystalhd_decoder_select="crystalhd"
2856 vc1_cuvid_decoder_deps="cuvid"
2857 vc1_mmal_decoder_deps="mmal"
2858 vc1_qsv_decoder_select="qsvdec vc1_parser"
2859 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2860 vp8_cuvid_decoder_deps="cuvid"
2861 vp8_mediacodec_decoder_deps="mediacodec"
2862 vp8_qsv_decoder_select="qsvdec vp8_parser"
2863 vp8_rkmpp_decoder_deps="rkmpp"
2864 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2865 vp8_vaapi_encoder_select="vaapi_encode"
2866 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2867 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2868 vp9_cuvid_decoder_deps="cuvid"
2869 vp9_mediacodec_decoder_deps="mediacodec"
2870 vp9_rkmpp_decoder_deps="rkmpp"
2871 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2872 vp9_vaapi_encoder_select="vaapi_encode"
2873 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2874 wmv3_crystalhd_decoder_select="crystalhd"
2875
2876 # parsers
2877 aac_parser_select="adts_header"
2878 h264_parser_select="golomb h264dsp h264parse"
2879 hevc_parser_select="hevcparse"
2880 mpegaudio_parser_select="mpegaudioheader"
2881 mpegvideo_parser_select="mpegvideo"
2882 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2883 vc1_parser_select="vc1dsp"
2884
2885 # bitstream_filters
2886 aac_adtstoasc_bsf_select="adts_header"
2887 h264_metadata_bsf_select="cbs_h264"
2888 h264_redundant_pps_bsf_select="cbs_h264"
2889 hevc_metadata_bsf_select="cbs_h265"
2890 mjpeg2jpeg_bsf_select="jpegtables"
2891 mpeg2_metadata_bsf_select="cbs_mpeg2"
2892 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2893
2894 # external libraries
2895 aac_at_decoder_deps="audiotoolbox"
2896 aac_at_decoder_select="aac_adtstoasc_bsf"
2897 ac3_at_decoder_deps="audiotoolbox"
2898 ac3_at_decoder_select="ac3_parser"
2899 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2900 alac_at_decoder_deps="audiotoolbox"
2901 amr_nb_at_decoder_deps="audiotoolbox"
2902 avisynth_deps_any="libdl LoadLibrary"
2903 avisynth_demuxer_deps="avisynth"
2904 avisynth_demuxer_select="riffdec"
2905 eac3_at_decoder_deps="audiotoolbox"
2906 eac3_at_decoder_select="ac3_parser"
2907 gsm_ms_at_decoder_deps="audiotoolbox"
2908 ilbc_at_decoder_deps="audiotoolbox"
2909 mp1_at_decoder_deps="audiotoolbox"
2910 mp2_at_decoder_deps="audiotoolbox"
2911 mp3_at_decoder_deps="audiotoolbox"
2912 mp1_at_decoder_select="mpegaudioheader"
2913 mp2_at_decoder_select="mpegaudioheader"
2914 mp3_at_decoder_select="mpegaudioheader"
2915 pcm_alaw_at_decoder_deps="audiotoolbox"
2916 pcm_mulaw_at_decoder_deps="audiotoolbox"
2917 qdmc_at_decoder_deps="audiotoolbox"
2918 qdm2_at_decoder_deps="audiotoolbox"
2919 aac_at_encoder_deps="audiotoolbox"
2920 aac_at_encoder_select="audio_frame_queue"
2921 alac_at_encoder_deps="audiotoolbox"
2922 alac_at_encoder_select="audio_frame_queue"
2923 ilbc_at_encoder_deps="audiotoolbox"
2924 ilbc_at_encoder_select="audio_frame_queue"
2925 pcm_alaw_at_encoder_deps="audiotoolbox"
2926 pcm_alaw_at_encoder_select="audio_frame_queue"
2927 pcm_mulaw_at_encoder_deps="audiotoolbox"
2928 pcm_mulaw_at_encoder_select="audio_frame_queue"
2929 chromaprint_muxer_deps="chromaprint"
2930 h264_videotoolbox_encoder_deps="pthreads"
2931 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2932 hevc_videotoolbox_encoder_deps="pthreads"
2933 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2934 libcelt_decoder_deps="libcelt"
2935 libfdk_aac_decoder_deps="libfdk_aac"
2936 libfdk_aac_encoder_deps="libfdk_aac"
2937 libfdk_aac_encoder_select="audio_frame_queue"
2938 libgme_demuxer_deps="libgme"
2939 libgsm_decoder_deps="libgsm"
2940 libgsm_encoder_deps="libgsm"
2941 libgsm_ms_decoder_deps="libgsm"
2942 libgsm_ms_encoder_deps="libgsm"
2943 libilbc_decoder_deps="libilbc"
2944 libilbc_encoder_deps="libilbc"
2945 libkvazaar_encoder_deps="libkvazaar"
2946 libmodplug_demuxer_deps="libmodplug"
2947 libmp3lame_encoder_deps="libmp3lame"
2948 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2949 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2950 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2951 libopencore_amrnb_encoder_select="audio_frame_queue"
2952 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2953 libopenh264_decoder_deps="libopenh264"
2954 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2955 libopenh264_encoder_deps="libopenh264"
2956 libopenjpeg_decoder_deps="libopenjpeg"
2957 libopenjpeg_encoder_deps="libopenjpeg"
2958 libopenmpt_demuxer_deps="libopenmpt"
2959 libopus_decoder_deps="libopus"
2960 libopus_encoder_deps="libopus"
2961 libopus_encoder_select="audio_frame_queue"
2962 librsvg_decoder_deps="librsvg"
2963 libshine_encoder_deps="libshine"
2964 libshine_encoder_select="audio_frame_queue"
2965 libspeex_decoder_deps="libspeex"
2966 libspeex_encoder_deps="libspeex"
2967 libspeex_encoder_select="audio_frame_queue"
2968 libtheora_encoder_deps="libtheora"
2969 libtwolame_encoder_deps="libtwolame"
2970 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2971 libvorbis_decoder_deps="libvorbis"
2972 libvorbis_encoder_deps="libvorbis libvorbisenc"
2973 libvorbis_encoder_select="audio_frame_queue"
2974 libvpx_vp8_decoder_deps="libvpx"
2975 libvpx_vp8_encoder_deps="libvpx"
2976 libvpx_vp9_decoder_deps="libvpx"
2977 libvpx_vp9_encoder_deps="libvpx"
2978 libwavpack_encoder_deps="libwavpack"
2979 libwavpack_encoder_select="audio_frame_queue"
2980 libwebp_encoder_deps="libwebp"
2981 libwebp_anim_encoder_deps="libwebp"
2982 libx262_encoder_deps="libx262"
2983 libx264_encoder_deps="libx264"
2984 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2985 libx264rgb_encoder_select="libx264_encoder"
2986 libx265_encoder_deps="libx265"
2987 libxavs_encoder_deps="libxavs"
2988 libxvid_encoder_deps="libxvid"
2989 libzvbi_teletext_decoder_deps="libzvbi"
2990 videotoolbox_suggest="coreservices"
2991 videotoolbox_deps="corefoundation coremedia corevideo"
2992 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2993
2994 # demuxers / muxers
2995 ac3_demuxer_select="ac3_parser"
2996 aiff_muxer_select="iso_media"
2997 asf_demuxer_select="riffdec"
2998 asf_o_demuxer_select="riffdec"
2999 asf_muxer_select="riffenc"
3000 asf_stream_muxer_select="asf_muxer"
3001 avi_demuxer_select="iso_media riffdec exif"
3002 avi_muxer_select="riffenc"
3003 caf_demuxer_select="iso_media riffdec"
3004 caf_muxer_select="iso_media"
3005 dash_muxer_select="mp4_muxer"
3006 dash_demuxer_deps="libxml2"
3007 dirac_demuxer_select="dirac_parser"
3008 dts_demuxer_select="dca_parser"
3009 dtshd_demuxer_select="dca_parser"
3010 dv_demuxer_select="dvprofile"
3011 dv_muxer_select="dvprofile"
3012 dxa_demuxer_select="riffdec"
3013 eac3_demuxer_select="ac3_parser"
3014 f4v_muxer_select="mov_muxer"
3015 fifo_muxer_deps="threads"
3016 flac_demuxer_select="flac_parser"
3017 hds_muxer_select="flv_muxer"
3018 hls_muxer_select="mpegts_muxer"
3019 hls_muxer_suggest="gcrypt openssl"
3020 image2_alias_pix_demuxer_select="image2_demuxer"
3021 image2_brender_pix_demuxer_select="image2_demuxer"
3022 ipod_muxer_select="mov_muxer"
3023 ismv_muxer_select="mov_muxer"
3024 matroska_audio_muxer_select="matroska_muxer"
3025 matroska_demuxer_select="iso_media riffdec"
3026 matroska_demuxer_suggest="bzlib lzo zlib"
3027 matroska_muxer_select="iso_media riffenc"
3028 mmf_muxer_select="riffenc"
3029 mov_demuxer_select="iso_media riffdec"
3030 mov_demuxer_suggest="zlib"
3031 mov_muxer_select="iso_media riffenc rtpenc_chain"
3032 mp3_demuxer_select="mpegaudio_parser"
3033 mp3_muxer_select="mpegaudioheader"
3034 mp4_muxer_select="mov_muxer"
3035 mpegts_demuxer_select="iso_media"
3036 mpegts_muxer_select="adts_muxer latm_muxer"
3037 mpegtsraw_demuxer_select="mpegts_demuxer"
3038 mxf_d10_muxer_select="mxf_muxer"
3039 mxf_opatom_muxer_select="mxf_muxer"
3040 nut_muxer_select="riffenc"
3041 nuv_demuxer_select="riffdec"
3042 oga_muxer_select="ogg_muxer"
3043 ogg_demuxer_select="dirac_parse"
3044 ogv_muxer_select="ogg_muxer"
3045 opus_muxer_select="ogg_muxer"
3046 psp_muxer_select="mov_muxer"
3047 rtp_demuxer_select="sdp_demuxer"
3048 rtp_muxer_select="golomb"
3049 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3050 rtsp_demuxer_select="http_protocol rtpdec"
3051 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3052 sap_demuxer_select="sdp_demuxer"
3053 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3054 sdp_demuxer_select="rtpdec"
3055 smoothstreaming_muxer_select="ismv_muxer"
3056 spdif_demuxer_select="adts_header"
3057 spdif_muxer_select="adts_header"
3058 spx_muxer_select="ogg_muxer"
3059 swf_demuxer_suggest="zlib"
3060 tak_demuxer_select="tak_parser"
3061 tg2_muxer_select="mov_muxer"
3062 tgp_muxer_select="mov_muxer"
3063 vobsub_demuxer_select="mpegps_demuxer"
3064 w64_demuxer_select="wav_demuxer"
3065 w64_muxer_select="wav_muxer"
3066 wav_demuxer_select="riffdec"
3067 wav_muxer_select="riffenc"
3068 webm_muxer_select="iso_media riffenc"
3069 webm_dash_manifest_demuxer_select="matroska_demuxer"
3070 wtv_demuxer_select="mpegts_demuxer riffdec"
3071 wtv_muxer_select="mpegts_muxer riffenc"
3072 xmv_demuxer_select="riffdec"
3073 xwma_demuxer_select="riffdec"
3074
3075 # indevs / outdevs
3076 alsa_indev_deps="alsa"
3077 alsa_outdev_deps="alsa"
3078 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3079 avfoundation_indev_suggest="coregraphics applicationservices"
3080 avfoundation_indev_extralibs="-framework Foundation"
3081 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3082 caca_outdev_deps="libcaca"
3083 decklink_deps_any="libdl LoadLibrary"
3084 decklink_indev_deps="decklink threads"
3085 decklink_indev_extralibs="-lstdc++"
3086 decklink_outdev_deps="decklink threads"
3087 decklink_outdev_extralibs="-lstdc++"
3088 libndi_newtek_indev_deps="libndi_newtek"
3089 libndi_newtek_indev_extralibs="-lndi"
3090 libndi_newtek_outdev_deps="libndi_newtek"
3091 libndi_newtek_outdev_extralibs="-lndi"
3092 dshow_indev_deps="IBaseFilter"
3093 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3094 fbdev_indev_deps="linux_fb_h"
3095 fbdev_outdev_deps="linux_fb_h"
3096 gdigrab_indev_deps="CreateDIBSection"
3097 gdigrab_indev_extralibs="-lgdi32"
3098 gdigrab_indev_select="bmp_decoder"
3099 iec61883_indev_deps="libiec61883"
3100 jack_indev_deps="libjack"
3101 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3102 kmsgrab_indev_deps="libdrm"
3103 lavfi_indev_deps="avfilter"
3104 libcdio_indev_deps="libcdio"
3105 libdc1394_indev_deps="libdc1394"
3106 openal_indev_deps="openal"
3107 opengl_outdev_deps="opengl"
3108 oss_indev_deps_any="sys_soundcard_h"
3109 oss_outdev_deps_any="sys_soundcard_h"
3110 pulse_indev_deps="libpulse"
3111 pulse_outdev_deps="libpulse"
3112 sdl2_outdev_deps="sdl2"
3113 sndio_indev_deps="sndio"
3114 sndio_outdev_deps="sndio"
3115 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3116 v4l2_indev_suggest="libv4l2"
3117 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3118 v4l2_outdev_suggest="libv4l2"
3119 vfwcap_indev_deps="vfw32 vfwcap_defines"
3120 xcbgrab_indev_deps="libxcb"
3121 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3122 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3123 xv_outdev_extralibs="-lXv -lX11 -lXext"
3124
3125 # protocols
3126 async_protocol_deps="threads"
3127 bluray_protocol_deps="libbluray"
3128 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3129 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3130 ffrtmpcrypt_protocol_select="tcp_protocol"
3131 ffrtmphttp_protocol_conflict="librtmp_protocol"
3132 ffrtmphttp_protocol_select="http_protocol"
3133 ftp_protocol_select="tcp_protocol"
3134 gopher_protocol_select="network"
3135 http_protocol_select="tcp_protocol"
3136 http_protocol_suggest="zlib"
3137 httpproxy_protocol_select="tcp_protocol"
3138 httpproxy_protocol_suggest="zlib"
3139 https_protocol_select="tls_protocol"
3140 https_protocol_suggest="zlib"
3141 icecast_protocol_select="http_protocol"
3142 librtmp_protocol_deps="librtmp"
3143 librtmpe_protocol_deps="librtmp"
3144 librtmps_protocol_deps="librtmp"
3145 librtmpt_protocol_deps="librtmp"
3146 librtmpte_protocol_deps="librtmp"
3147 libsmbclient_protocol_deps="libsmbclient gplv3"
3148 libssh_protocol_deps="libssh"
3149 libtls_conflict="openssl gnutls"
3150 mmsh_protocol_select="http_protocol"
3151 mmst_protocol_select="network"
3152 rtmp_protocol_conflict="librtmp_protocol"
3153 rtmp_protocol_select="tcp_protocol"
3154 rtmp_protocol_suggest="zlib"
3155 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3156 rtmpe_protocol_suggest="zlib"
3157 rtmps_protocol_conflict="librtmp_protocol"
3158 rtmps_protocol_select="tls_protocol"
3159 rtmps_protocol_suggest="zlib"
3160 rtmpt_protocol_select="ffrtmphttp_protocol"
3161 rtmpt_protocol_suggest="zlib"
3162 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3163 rtmpte_protocol_suggest="zlib"
3164 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3165 rtmpts_protocol_suggest="zlib"
3166 rtp_protocol_select="udp_protocol"
3167 schannel_conflict="openssl gnutls libtls"
3168 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3169 sctp_protocol_select="network"
3170 securetransport_conflict="openssl gnutls libtls"
3171 srtp_protocol_select="rtp_protocol srtp"
3172 tcp_protocol_select="network"
3173 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3174 tls_protocol_select="tcp_protocol"
3175 udp_protocol_select="network"
3176 udplite_protocol_select="network"
3177 unix_protocol_deps="sys_un_h"
3178 unix_protocol_select="network"
3179
3180 # filters
3181 afftfilt_filter_deps="avcodec"
3182 afftfilt_filter_select="fft"
3183 afir_filter_deps="avcodec"
3184 afir_filter_select="fft"
3185 amovie_filter_deps="avcodec avformat"
3186 aresample_filter_deps="swresample"
3187 ass_filter_deps="libass"
3188 atempo_filter_deps="avcodec"
3189 atempo_filter_select="rdft"
3190 azmq_filter_deps="libzmq"
3191 blackframe_filter_deps="gpl"
3192 boxblur_filter_deps="gpl"
3193 bs2b_filter_deps="libbs2b"
3194 colormatrix_filter_deps="gpl"
3195 convolve_filter_deps="avcodec"
3196 convolve_filter_select="fft"
3197 coreimage_filter_deps="coreimage appkit"
3198 coreimage_filter_extralibs="-framework OpenGL"
3199 coreimagesrc_filter_deps="coreimage appkit"
3200 coreimagesrc_filter_extralibs="-framework OpenGL"
3201 cover_rect_filter_deps="avcodec avformat gpl"
3202 cropdetect_filter_deps="gpl"
3203 deconvolve_filter_deps="avcodec"
3204 deconvolve_filter_select="fft"
3205 deinterlace_qsv_filter_deps="libmfx"
3206 deinterlace_vaapi_filter_deps="vaapi"
3207 delogo_filter_deps="gpl"
3208 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3209 deshake_filter_select="pixelutils"
3210 drawtext_filter_deps="libfreetype"
3211 drawtext_filter_suggest="libfontconfig libfribidi"
3212 elbg_filter_deps="avcodec"
3213 eq_filter_deps="gpl"
3214 fftfilt_filter_deps="avcodec"
3215 fftfilt_filter_select="rdft"
3216 find_rect_filter_deps="avcodec avformat gpl"
3217 firequalizer_filter_deps="avcodec"
3218 firequalizer_filter_select="rdft"
3219 flite_filter_deps="libflite"
3220 framerate_filter_select="pixelutils"
3221 frei0r_filter_deps="frei0r libdl"
3222 frei0r_src_filter_deps="frei0r libdl"
3223 fspp_filter_deps="gpl"
3224 geq_filter_deps="gpl"
3225 histeq_filter_deps="gpl"
3226 hqdn3d_filter_deps="gpl"
3227 interlace_filter_deps="gpl"
3228 kerndeint_filter_deps="gpl"
3229 ladspa_filter_deps="ladspa libdl"
3230 lv2_filter_deps="lv2"
3231 mcdeint_filter_deps="avcodec gpl"
3232 movie_filter_deps="avcodec avformat"
3233 mpdecimate_filter_deps="gpl"
3234 mpdecimate_filter_select="pixelutils"
3235 mptestsrc_filter_deps="gpl"
3236 negate_filter_deps="lut_filter"
3237 nnedi_filter_deps="gpl"
3238 ocr_filter_deps="libtesseract"
3239 ocv_filter_deps="libopencv"
3240 openclsrc_filter_deps="opencl"
3241 overlay_opencl_filter_deps="opencl"
3242 overlay_qsv_filter_deps="libmfx"
3243 overlay_qsv_filter_select="qsvvpp"
3244 owdenoise_filter_deps="gpl"
3245 pan_filter_deps="swresample"
3246 perspective_filter_deps="gpl"
3247 phase_filter_deps="gpl"
3248 pp7_filter_deps="gpl"
3249 pp_filter_deps="gpl postproc"
3250 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3251 program_opencl_filter_deps="opencl"
3252 pullup_filter_deps="gpl"
3253 removelogo_filter_deps="avcodec avformat swscale"
3254 repeatfields_filter_deps="gpl"
3255 resample_filter_deps="avresample"
3256 rubberband_filter_deps="librubberband"
3257 sab_filter_deps="gpl swscale"
3258 scale2ref_filter_deps="swscale"
3259 scale_filter_deps="swscale"
3260 scale_qsv_filter_deps="libmfx"
3261 select_filter_select="pixelutils"
3262 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3263 showcqt_filter_deps="avcodec avformat swscale"
3264 showcqt_filter_suggest="libfontconfig libfreetype"
3265 showcqt_filter_select="fft"
3266 showfreqs_filter_deps="avcodec"
3267 showfreqs_filter_select="fft"
3268 showspectrum_filter_deps="avcodec"
3269 showspectrum_filter_select="fft"
3270 showspectrumpic_filter_deps="avcodec"
3271 showspectrumpic_filter_select="fft"
3272 signature_filter_deps="gpl avcodec avformat"
3273 smartblur_filter_deps="gpl swscale"
3274 sofalizer_filter_deps="libmysofa avcodec"
3275 sofalizer_filter_select="fft"
3276 spectrumsynth_filter_deps="avcodec"
3277 spectrumsynth_filter_select="fft"
3278 spp_filter_deps="gpl avcodec"
3279 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3280 stereo3d_filter_deps="gpl"
3281 subtitles_filter_deps="avformat avcodec libass"
3282 super2xsai_filter_deps="gpl"
3283 pixfmts_super2xsai_test_deps="super2xsai_filter"
3284 tinterlace_filter_deps="gpl"
3285 tinterlace_merge_test_deps="tinterlace_filter"
3286 tinterlace_pad_test_deps="tinterlace_filter"
3287 tonemap_filter_deps="const_nan"
3288 unsharp_opencl_filter_deps="opencl"
3289 uspp_filter_deps="gpl avcodec"
3290 vaguedenoiser_filter_deps="gpl"
3291 vidstabdetect_filter_deps="libvidstab"
3292 vidstabtransform_filter_deps="libvidstab"
3293 libvmaf_filter_deps="libvmaf pthreads"
3294 zmq_filter_deps="libzmq"
3295 zoompan_filter_deps="swscale"
3296 zscale_filter_deps="libzimg const_nan"
3297 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3298 vpp_qsv_filter_deps="libmfx"
3299 vpp_qsv_filter_select="qsvvpp"
3300
3301 # examples
3302 avio_dir_cmd_deps="avformat avutil"
3303 avio_reading_deps="avformat avcodec avutil"
3304 decode_audio_example_deps="avcodec avutil"
3305 decode_video_example_deps="avcodec avutil"
3306 demuxing_decoding_example_deps="avcodec avformat avutil"
3307 encode_audio_example_deps="avcodec avutil"
3308 encode_video_example_deps="avcodec avutil"
3309 extract_mvs_example_deps="avcodec avformat avutil"
3310 filter_audio_example_deps="avfilter avutil"
3311 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3312 filtering_video_example_deps="avfilter avcodec avformat avutil"
3313 http_multiclient_example_deps="avformat avutil fork"
3314 hw_decode_example_deps="avcodec avformat avutil"
3315 metadata_example_deps="avformat avutil"
3316 muxing_example_deps="avcodec avformat avutil swscale"
3317 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3318 remuxing_example_deps="avcodec avformat avutil"
3319 resampling_audio_example_deps="avutil swresample"
3320 scaling_video_example_deps="avutil swscale"
3321 transcode_aac_example_deps="avcodec avformat swresample"
3322 transcoding_example_deps="avfilter avcodec avformat avutil"
3323 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3324 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3325
3326 # EXTRALIBS_LIST
3327 cpu_init_extralibs="pthreads_extralibs"
3328 cws2fws_extralibs="zlib_extralibs"
3329
3330 # libraries, in linking order
3331 avcodec_deps="avutil"
3332 avcodec_suggest="libm"
3333 avcodec_select="null_bsf"
3334 avdevice_deps="avformat avcodec avutil"
3335 avdevice_suggest="libm"
3336 avfilter_deps="avutil"
3337 avfilter_suggest="libm"
3338 avformat_deps="avcodec avutil"
3339 avformat_suggest="libm network zlib"
3340 avresample_deps="avutil"
3341 avresample_suggest="libm"
3342 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3343 postproc_deps="avutil gpl"
3344 postproc_suggest="libm"
3345 swresample_deps="avutil"
3346 swresample_suggest="libm libsoxr"
3347 swscale_deps="avutil"
3348 swscale_suggest="libm"
3349
3350 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3351 avfilter_extralibs="pthreads_extralibs"
3352 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3353
3354 # programs
3355 ffmpeg_deps="avcodec avfilter avformat swresample"
3356 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3357                null_filter
3358                trim_filter"
3359 ffmpeg_suggest="ole32 psapi shell32"
3360 ffplay_deps="avcodec avformat swscale swresample sdl2"
3361 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3362 ffplay_suggest="shell32"
3363 ffprobe_deps="avcodec avformat"
3364 ffprobe_suggest="shell32"
3365
3366 # documentation
3367 podpages_deps="perl"
3368 manpages_deps="perl pod2man"
3369 htmlpages_deps="perl"
3370 htmlpages_deps_any="makeinfo_html texi2html"
3371 txtpages_deps="perl makeinfo"
3372 doc_deps_any="manpages htmlpages podpages txtpages"
3373
3374 # default parameters
3375
3376 logfile="ffbuild/config.log"
3377
3378 # installation paths
3379 prefix_default="/usr/local"
3380 bindir_default='${prefix}/bin'
3381 datadir_default='${prefix}/share/ffmpeg'
3382 docdir_default='${prefix}/share/doc/ffmpeg'
3383 incdir_default='${prefix}/include'
3384 libdir_default='${prefix}/lib'
3385 mandir_default='${prefix}/share/man'
3386
3387 # toolchain
3388 ar_default="ar"
3389 cc_default="gcc"
3390 cxx_default="g++"
3391 host_cc_default="gcc"
3392 doxygen_default="doxygen"
3393 install="install"
3394 ln_s_default="ln -s -f"
3395 nm_default="nm -g"
3396 pkg_config_default=pkg-config
3397 ranlib_default="ranlib"
3398 strip_default="strip"
3399 version_script='--version-script'
3400 objformat="elf32"
3401 x86asmexe_default="nasm"
3402 windres_default="windres"
3403 nvcc_default="nvcc"
3404 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3405 striptype="direct"
3406
3407 # OS
3408 target_os_default=$(tolower $(uname -s))
3409 host_os=$target_os_default
3410
3411 # machine
3412 if test "$target_os_default" = aix; then
3413     arch_default=$(uname -p)
3414     strip_default="strip -X32_64"
3415 else
3416     arch_default=$(uname -m)
3417 fi
3418 cpu="generic"
3419 intrinsics="none"
3420
3421 # configurable options
3422 enable $PROGRAM_LIST
3423 enable $DOCUMENT_LIST
3424 enable $EXAMPLE_LIST
3425 enable $(filter_out avresample $LIBRARY_LIST)
3426 enable stripping
3427
3428 enable asm
3429 enable debug
3430 enable doc
3431 enable faan faandct faanidct
3432 enable optimizations
3433 enable runtime_cpudetect
3434 enable safe_bitstream_reader
3435 enable static
3436 enable swscale_alpha
3437 enable valgrind_backtrace
3438
3439 sws_max_filter_size_default=256
3440 set_default sws_max_filter_size
3441
3442 # internal components are enabled by default
3443 enable $EXTRALIBS_LIST
3444
3445 # Avoid external, non-system, libraries getting enabled by dependency resolution
3446 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3447
3448 # build settings
3449 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3450 LIBPREF="lib"
3451 LIBSUF=".a"
3452 FULLNAME='$(NAME)$(BUILDSUF)'
3453 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3454 SLIBPREF="lib"
3455 SLIBSUF=".so"
3456 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3457 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3458 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3459 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3460 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3461 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3462 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3463
3464 asflags_filter=echo
3465 cflags_filter=echo
3466 ldflags_filter=echo
3467
3468 AS_C='-c'
3469 AS_O='-o $@'
3470 CC_C='-c'
3471 CC_E='-E -o $@'
3472 CC_O='-o $@'
3473 CXX_C='-c'
3474 CXX_O='-o $@'
3475 OBJCC_C='-c'
3476 OBJCC_E='-E -o $@'
3477 OBJCC_O='-o $@'
3478 X86ASM_O='-o $@'
3479 LD_O='-o $@'
3480 LD_LIB='-l%'
3481 LD_PATH='-L'
3482 HOSTCC_C='-c'
3483 HOSTCC_E='-E -o $@'
3484 HOSTCC_O='-o $@'
3485 HOSTLD_O='-o $@'
3486 NVCC_C='-c'
3487 NVCC_O='-o $@'
3488
3489 host_extralibs='-lm'
3490 host_cflags_filter=echo
3491 host_ldflags_filter=echo
3492
3493 target_path='$(CURDIR)'
3494
3495 # since the object filename is not given with the -MM flag, the compiler
3496 # is only able to print the basename, and we must add the path ourselves
3497 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3498 DEPFLAGS='-MM'
3499
3500 mkdir -p ffbuild
3501
3502 # find source path
3503 if test -f configure; then
3504     source_path=.
3505 else
3506     source_path=$(cd $(dirname "$0"); pwd)
3507     case "$source_path" in
3508         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3509     esac
3510     test -e "$source_path/config.h" &&
3511         die "Out of tree builds are impossible with config.h in source dir."
3512 fi
3513
3514 for v in "$@"; do
3515     r=${v#*=}
3516     l=${v%"$r"}
3517     r=$(sh_quote "$r")
3518     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3519 done
3520
3521 find_things(){
3522     thing=$1
3523     pattern=$2
3524     file=$source_path/$3
3525     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3526 }
3527
3528 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3529 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3530 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3531 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3532 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3533
3534 find_things_extern(){
3535     thing=$1
3536     pattern=$2
3537     file=$source_path/$3
3538     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3539 }
3540
3541 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3542 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3543 CODEC_LIST="
3544     $ENCODER_LIST
3545     $DECODER_LIST
3546 "
3547 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3548 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3549 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3550 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3551
3552 AVCODEC_COMPONENTS_LIST="
3553     $BSF_LIST
3554     $DECODER_LIST
3555     $ENCODER_LIST
3556     $HWACCEL_LIST
3557     $PARSER_LIST
3558 "
3559
3560 AVDEVICE_COMPONENTS_LIST="
3561     $INDEV_LIST
3562     $OUTDEV_LIST
3563 "
3564
3565 AVFILTER_COMPONENTS_LIST="
3566     $FILTER_LIST
3567 "
3568
3569 AVFORMAT_COMPONENTS_LIST="
3570     $DEMUXER_LIST
3571     $MUXER_LIST
3572     $PROTOCOL_LIST
3573 "
3574
3575 ALL_COMPONENTS="
3576     $AVCODEC_COMPONENTS_LIST
3577     $AVDEVICE_COMPONENTS_LIST
3578     $AVFILTER_COMPONENTS_LIST
3579     $AVFORMAT_COMPONENTS_LIST
3580 "
3581
3582 for n in $COMPONENT_LIST; do
3583     v=$(toupper ${n%s})_LIST
3584     eval enable \$$v
3585     eval ${n}_if_any="\$$v"
3586 done
3587
3588 enable $ARCH_EXT_LIST
3589
3590 die_unknown(){
3591     echo "Unknown option \"$1\"."
3592     echo "See $0 --help for available options."
3593     exit 1
3594 }
3595
3596 print_in_columns() {
3597     cols=$(expr $ncols / 24)
3598     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3599 }
3600
3601 show_list() {
3602     suffix=_$1
3603     shift
3604     echo $* | sed s/$suffix//g | print_in_columns
3605     exit 0
3606 }
3607
3608 rand_list(){
3609     IFS=', '
3610     set -- $*
3611     unset IFS
3612     for thing; do
3613         comp=${thing%:*}
3614         prob=${thing#$comp}
3615         prob=${prob#:}
3616         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3617         echo "prob ${prob:-0.5}"
3618         printf '%s\n' $comp
3619     done
3620 }
3621
3622 do_random(){
3623     action=$1
3624     shift
3625     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3626     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3627 }
3628
3629 for opt do
3630     optval="${opt#*=}"
3631     case "$opt" in
3632         --extra-ldflags=*)
3633             add_ldflags $optval
3634         ;;
3635         --extra-ldexeflags=*)
3636             add_ldexeflags $optval
3637         ;;
3638         --extra-ldsoflags=*)
3639             add_ldsoflags $optval
3640         ;;
3641         --extra-ldlibflags=*)
3642             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3643                  "removed in the future. Use --extra-ldsoflags instead."
3644             add_ldsoflags $optval
3645         ;;
3646         --extra-libs=*)
3647             add_extralibs $optval
3648         ;;
3649         --disable-devices)
3650             disable $INDEV_LIST $OUTDEV_LIST
3651         ;;
3652         --enable-debug=*)
3653             debuglevel="$optval"
3654         ;;
3655         --disable-programs)
3656             disable $PROGRAM_LIST
3657         ;;
3658         --disable-everything)
3659             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3660         ;;
3661         --disable-all)
3662             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3663             disable $LIBRARY_LIST $PROGRAM_LIST doc
3664             enable avutil
3665         ;;
3666         --enable-random|--disable-random)
3667             action=${opt%%-random}
3668             do_random ${action#--} $COMPONENT_LIST
3669         ;;
3670         --enable-random=*|--disable-random=*)
3671             action=${opt%%-random=*}
3672             do_random ${action#--} $optval
3673         ;;
3674         --enable-sdl)
3675             enable sdl2
3676         ;;
3677         --enable-*=*|--disable-*=*)
3678             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3679             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3680             eval list=\$$(toupper $thing)_LIST
3681             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3682             list=$(filter "$name" $list)
3683             [ "$list" = "" ] && warn "Option $opt did not match anything"
3684             $action $list
3685         ;;
3686         --enable-yasm|--disable-yasm)
3687             warn "The ${opt} option is only provided for compatibility and will be\n"\
3688                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3689             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3690         ;;
3691         --yasmexe=*)
3692             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3693                  "removed in the future. Use --x86asmexe instead."
3694             x86asmexe="$optval"
3695         ;;
3696         --enable-?*|--disable-?*)
3697             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3698             if is_in $option $COMPONENT_LIST; then
3699                 test $action = disable && action=unset
3700                 eval $action \$$(toupper ${option%s})_LIST
3701             elif is_in $option $CMDLINE_SELECT; then
3702                 $action $option
3703             else
3704                 die_unknown $opt
3705             fi
3706         ;;
3707         --list-*)
3708             NAME="${opt#--list-}"
3709             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3710             NAME=${NAME%s}
3711             eval show_list $NAME \$$(toupper $NAME)_LIST
3712         ;;
3713         --help|-h) show_help
3714         ;;
3715         --quiet|-q) quiet=yes
3716         ;;
3717         --fatal-warnings) enable fatal_warnings
3718         ;;
3719         --libfuzzer=*)
3720             libfuzzer_path="$optval"
3721         ;;
3722         *)
3723             optname="${opt%%=*}"
3724             optname="${optname#--}"
3725             optname=$(echo "$optname" | sed 's/-/_/g')
3726             if is_in $optname $CMDLINE_SET; then
3727                 eval $optname='$optval'
3728             elif is_in $optname $CMDLINE_APPEND; then
3729                 append $optname "$optval"
3730             else
3731                 die_unknown $opt
3732             fi
3733         ;;
3734     esac
3735 done
3736
3737 for e in $env; do
3738     eval "export $e"
3739 done
3740
3741 if disabled autodetect; then
3742
3743     # Unless iconv is explicitely disabled by the user, we still want to probe
3744     # for the iconv from the libc.
3745     disabled iconv || enable libc_iconv
3746
3747     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3748     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3749 fi
3750 # Mark specifically enabled, but normally autodetected libraries as requested.
3751 for lib in $AUTODETECT_LIBS; do
3752     enabled $lib && request $lib
3753 done
3754 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3755 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3756 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3757
3758 disabled logging && logfile=/dev/null
3759
3760 # command line configuration sanity checks
3761
3762 # we need to build at least one lib type
3763 if ! enabled_any static shared; then
3764     cat <<EOF
3765 At least one library type must be built.
3766 Specify --enable-static to build the static libraries or --enable-shared to
3767 build the shared libraries as well. To only build the shared libraries specify
3768 --disable-static in addition to --enable-shared.
3769 EOF
3770     exit 1
3771 fi
3772
3773 die_license_disabled() {
3774     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3775 }
3776
3777 die_license_disabled_gpl() {
3778     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3779 }
3780
3781 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3782 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3783
3784 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3785 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3786
3787 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3788
3789 enabled_all gnutls openssl &&
3790     die "GnuTLS and OpenSSL must not be enabled at the same time."
3791
3792 # Disable all the library-specific components if the library itself
3793 # is disabled, see AVCODEC_LIST and following _LIST variables.
3794
3795 disable_components(){
3796     disabled ${1} && disable $(
3797         eval components="\$$(toupper ${1})_COMPONENTS"
3798         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3799     )
3800 }
3801
3802 map 'disable_components $v' $LIBRARY_LIST
3803
3804 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3805 set >> $logfile
3806
3807 test -n "$valgrind" && toolchain="valgrind-memcheck"
3808
3809 enabled ossfuzz && {
3810     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3811     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3812 }
3813
3814 case "$toolchain" in
3815     *-asan)
3816         cc_default="${toolchain%-asan}"
3817         add_cflags  -fsanitize=address
3818         add_ldflags -fsanitize=address
3819     ;;
3820     *-msan)
3821         cc_default="${toolchain%-msan}"
3822         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3823         add_ldflags -fsanitize=memory
3824     ;;
3825     *-tsan)
3826         cc_default="${toolchain%-tsan}"
3827         add_cflags  -fsanitize=thread -fPIE
3828         add_ldflags -fsanitize=thread -pie
3829         case "$toolchain" in
3830             gcc-tsan)
3831                 add_cflags  -fPIC
3832                 add_ldflags -fPIC
3833                 ;;
3834         esac
3835     ;;
3836     *-usan)
3837         cc_default="${toolchain%-usan}"
3838         add_cflags  -fsanitize=undefined
3839         add_ldflags -fsanitize=undefined
3840     ;;
3841     valgrind-*)
3842         target_exec_default="valgrind"
3843         case "$toolchain" in
3844             valgrind-massif)
3845                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3846                 ;;
3847             valgrind-memcheck)
3848                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3849                 ;;
3850         esac
3851     ;;
3852     msvc)
3853         # Check whether the current MSVC version needs the C99 converter.
3854         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3855         # support enough of C99 to build ffmpeg. Default to the new
3856         # behaviour if the regexp was unable to match anything, since this
3857         # successfully parses the version number of existing supported
3858         # versions that require the converter (MSVC 2010 and 2012).
3859         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3860         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3861             cc_default="cl"
3862             cxx_default="cl"
3863         else
3864             cc_default="c99wrap cl"
3865             cxx_default="c99wrap cl"
3866         fi
3867         ld_default="$source_path/compat/windows/mslink"
3868         nm_default="dumpbin -symbols"
3869         ar_default="lib"
3870         case "$arch" in
3871         aarch64|arm64)
3872             as_default="armasm64"
3873             ;;
3874         arm*)
3875             as_default="armasm"
3876             ;;
3877         esac
3878         target_os_default="win32"
3879         # Use a relative path for TMPDIR. This makes sure all the
3880         # ffconf temp files are written with a relative path, avoiding
3881         # issues with msys/win32 path conversion for MSVC parameters
3882         # such as -Fo<file> or -out:<file>.
3883         TMPDIR=.
3884     ;;
3885     icl)
3886         cc_default="icl"
3887         ld_default="xilink"
3888         nm_default="dumpbin -symbols"
3889         ar_default="xilib"
3890         target_os_default="win32"
3891         TMPDIR=.
3892     ;;
3893     gcov)
3894         add_cflags  -fprofile-arcs -ftest-coverage
3895         add_ldflags -fprofile-arcs -ftest-coverage
3896     ;;
3897     llvm-cov)
3898         add_cflags -fprofile-arcs -ftest-coverage
3899         add_ldflags --coverage
3900     ;;
3901     hardened)
3902         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3903         add_cflags   -fno-strict-overflow -fstack-protector-all
3904         add_ldflags  -Wl,-z,relro -Wl,-z,now
3905         add_cflags   -fPIE
3906         add_ldexeflags -fPIE -pie
3907     ;;
3908     ?*)
3909         die "Unknown toolchain $toolchain"
3910     ;;
3911 esac
3912
3913 if test -n "$cross_prefix"; then
3914     test -n "$arch" && test -n "$target_os" ||
3915         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3916     enable cross_compile
3917 fi
3918
3919 ar_default="${cross_prefix}${ar_default}"
3920 cc_default="${cross_prefix}${cc_default}"
3921 cxx_default="${cross_prefix}${cxx_default}"
3922 nm_default="${cross_prefix}${nm_default}"
3923 pkg_config_default="${cross_prefix}${pkg_config_default}"
3924 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3925     ranlib_default="${cross_prefix}${ranlib_default} -D"
3926 else
3927     ranlib_default="${cross_prefix}${ranlib_default}"
3928 fi
3929 strip_default="${cross_prefix}${strip_default}"
3930 windres_default="${cross_prefix}${windres_default}"
3931
3932 sysinclude_default="${sysroot}/usr/include"
3933
3934 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3935     target_exec target_os x86asmexe nvcc
3936 enabled cross_compile || host_cc_default=$cc
3937 set_default host_cc
3938
3939 pkg_config_fail_message=""
3940 if ! $pkg_config --version >/dev/null 2>&1; then
3941     warn "$pkg_config not found, library detection may fail."
3942     pkg_config=false
3943 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3944     pkg_config_fail_message="
3945 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3946 fi
3947
3948 if test $doxygen != $doxygen_default && \
3949   ! $doxygen --version >/dev/null 2>&1; then
3950     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3951 fi
3952
3953 exesuf() {
3954     case $1 in
3955         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3956     esac
3957 }
3958
3959 EXESUF=$(exesuf $target_os)
3960 HOSTEXESUF=$(exesuf $host_os)
3961
3962 # set temporary file name
3963 : ${TMPDIR:=$TEMPDIR}
3964 : ${TMPDIR:=$TMP}
3965 : ${TMPDIR:=/tmp}
3966
3967 if [ -n "$tempprefix" ] ; then
3968     mktemp(){
3969         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3970         echo "$tmpname"
3971         mkdir "$tmpname"
3972     }
3973 elif ! check_cmd mktemp -u XXXXXX; then
3974     # simple replacement for missing mktemp
3975     # NOT SAFE FOR GENERAL USE
3976     mktemp(){
3977         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3978         echo "$tmpname"
3979         mkdir "$tmpname"
3980     }
3981 fi
3982
3983 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3984     die "Unable to create temporary directory in $TMPDIR."
3985
3986 tmpfile(){
3987     tmp="${FFTMPDIR}/test"$2
3988     (set -C; exec > $tmp) 2> /dev/null ||
3989         die "Unable to create temporary file in $FFTMPDIR."
3990     eval $1=$tmp
3991 }
3992
3993 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3994 trap 'exit 2' INT
3995
3996 tmpfile TMPASM .asm
3997 tmpfile TMPC   .c
3998 tmpfile TMPCPP .cpp
3999 tmpfile TMPE   $EXESUF
4000 tmpfile TMPH   .h
4001 tmpfile TMPM   .m
4002 tmpfile TMPO   .o
4003 tmpfile TMPS   .S
4004 tmpfile TMPSH  .sh
4005 tmpfile TMPV   .ver
4006
4007 unset -f mktemp
4008
4009 chmod +x $TMPE
4010
4011 # make sure we can execute files in $TMPDIR
4012 cat > $TMPSH 2>> $logfile <<EOF
4013 #! /bin/sh
4014 EOF
4015 chmod +x $TMPSH >> $logfile 2>&1
4016 if ! $TMPSH >> $logfile 2>&1; then
4017     cat <<EOF
4018 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4019 variable to another directory and make sure that it is not mounted noexec.
4020 EOF
4021     die "Sanity test failed."
4022 fi
4023
4024 armasm_flags(){
4025     for flag; do
4026         case $flag in
4027             # Filter out MSVC cl.exe options from cflags that shouldn't
4028             # be passed to gas-preprocessor
4029             -M[TD]*)                                            ;;
4030             *)                  echo $flag                      ;;
4031         esac
4032    done
4033 }
4034
4035 cparser_flags(){
4036     for flag; do
4037         case $flag in
4038             -Wno-switch)             echo -Wno-switch-enum ;;
4039             -Wno-format-zero-length) ;;
4040             -Wdisabled-optimization) ;;
4041             -Wno-pointer-sign)       echo -Wno-other ;;
4042             *)                       echo $flag ;;
4043         esac
4044     done
4045 }
4046
4047 msvc_common_flags(){
4048     for flag; do
4049         case $flag in
4050             # In addition to specifying certain flags under the compiler
4051             # specific filters, they must be specified here as well or else the
4052             # generic catch all at the bottom will print the original flag.
4053             -Wall)                ;;
4054             -Wextra)              ;;
4055             -std=c99)             ;;
4056             # Common flags
4057             -fomit-frame-pointer) ;;
4058             -g)                   echo -Z7 ;;
4059             -fno-math-errno)      ;;
4060             -fno-common)          ;;
4061             -fno-signed-zeros)    ;;
4062             -fPIC)                ;;
4063             -mthumb)              ;;
4064             -march=*)             ;;
4065             -lz)                  echo zlib.lib ;;
4066             -lx264)               echo libx264.lib ;;
4067             -lstdc++)             ;;
4068             -l*)                  echo ${flag#-l}.lib ;;
4069             -LARGEADDRESSAWARE)   echo $flag ;;
4070             -L*)                  echo -libpath:${flag#-L} ;;
4071             *)                    echo $flag ;;
4072         esac
4073     done
4074 }
4075
4076 msvc_flags(){
4077     msvc_common_flags "$@"
4078     for flag; do
4079         case $flag in
4080             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4081                                        -wd4554 ;;
4082             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4083                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4084                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4085                                        -wd4307 \
4086                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4087         esac
4088     done
4089 }
4090
4091 icl_flags(){
4092     msvc_common_flags "$@"
4093     for flag; do
4094         case $flag in
4095             # Despite what Intel's documentation says -Wall, which is supported
4096             # on Windows, does enable remarks so disable them here.
4097             -Wall)                echo $flag -Qdiag-disable:remark ;;
4098             -std=c99)             echo -Qstd=c99 ;;
4099             -flto)                echo -ipo ;;
4100         esac
4101     done
4102 }
4103
4104 icc_flags(){
4105     for flag; do
4106         case $flag in
4107             -flto)                echo -ipo ;;
4108             *)                    echo $flag ;;
4109         esac
4110     done
4111 }
4112
4113 suncc_flags(){
4114     for flag; do
4115         case $flag in
4116             -march=*|-mcpu=*)
4117                 case "${flag#*=}" in
4118                     native)                   echo -xtarget=native       ;;
4119                     v9|niagara)               echo -xarch=sparc          ;;
4120                     ultrasparc)               echo -xarch=sparcvis       ;;
4121                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4122                     i586|pentium)             echo -xchip=pentium        ;;
4123                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4124                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4125                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4126                     pentium4*)          echo -xtarget=pentium4           ;;
4127                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4128                     *-sse3)             echo -xarch=sse3                 ;;
4129                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4130                     bonnell)                   echo -xarch=ssse3         ;;
4131                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4132                     westmere)                  echo -xtarget=westmere    ;;
4133                     silvermont)                echo -xarch=sse4_2        ;;
4134                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4135                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4136                                                echo -xarch=avx           ;;
4137                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4138                     btver1)                    echo -xarch=amdsse4a      ;;
4139                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4140                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4141                     k8|opteron|athlon64|athlon-fx)
4142                                                echo -xarch=sse2a         ;;
4143                     athlon*)                   echo -xarch=pentium_proa  ;;
4144                 esac
4145                 ;;
4146             -std=c99)             echo -xc99              ;;
4147             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4148             -fPIC)                echo -KPIC -xcode=pic32 ;;
4149             -W*,*)                echo $flag              ;;
4150             -f*-*|-W*|-mimpure-text)                      ;;
4151             -shared)              echo -G                 ;;
4152             *)                    echo $flag              ;;
4153         esac
4154     done
4155 }
4156
4157 probe_cc(){
4158     pfx=$1
4159     _cc=$2
4160     first=$3
4161
4162     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4163     unset _ld_o _ldflags _ld_lib _ld_path
4164     unset _depflags _DEPCMD _DEPFLAGS
4165     _flags_filter=echo
4166
4167     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4168         true # no-op to avoid reading stdin in following checks
4169     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4170         _type=llvm_gcc
4171         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4172         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4173         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4174         _cflags_speed='-O3'
4175         _cflags_size='-Os'
4176     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4177         _type=gcc
4178         gcc_version=$($_cc --version | head -n1)
4179         gcc_basever=$($_cc -dumpversion)
4180         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4181         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4182         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4183         case $gcc_basever in
4184             2) ;;
4185             2.*) ;;
4186             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4187         esac
4188         if [ "$first" = true ]; then
4189             case $gcc_basever in
4190                 4.2*)
4191                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4192             esac
4193         fi
4194         _cflags_speed='-O3'
4195         _cflags_size='-Os'
4196     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4197         _type=icc
4198         _ident=$($_cc --version | head -n1)
4199         _depflags='-MMD'
4200         _cflags_speed='-O3'
4201         _cflags_size='-Os'
4202         _cflags_noopt='-O1'
4203         _flags_filter=icc_flags
4204     elif $_cc -v 2>&1 | grep -q xlc; then
4205         _type=xlc
4206         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4207         _cflags_speed='-O5'
4208         _cflags_size='-O5 -qcompact'
4209     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4210         test -d "$sysroot" || die "No valid sysroot specified."
4211         _type=armcc
4212         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4213         armcc_conf="$PWD/armcc.conf"
4214         $_cc --arm_linux_configure                 \
4215              --arm_linux_config_file="$armcc_conf" \
4216              --configure_sysroot="$sysroot"        \
4217              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4218              die "Error creating armcc configuration file."
4219         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4220         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4221         as_default="${cross_prefix}gcc"
4222         _depflags='-MMD'
4223         _cflags_speed='-O3'
4224         _cflags_size='-Os'
4225     elif $_cc -v 2>&1 | grep -q clang; then
4226         _type=clang
4227         _ident=$($_cc --version 2>/dev/null | head -n1)
4228         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4229         _cflags_speed='-O3'
4230         _cflags_size='-Oz'
4231     elif $_cc -V 2>&1 | grep -q Sun; then
4232         _type=suncc
4233         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4234         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4235         _DEPFLAGS='-xM1 -xc99'
4236         _ldflags='-std=c99'
4237         _cflags_speed='-O5'
4238         _cflags_size='-O5 -xspace'
4239         _flags_filter=suncc_flags
4240     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4241         _type=pathscale
4242         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4243         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4244         _cflags_speed='-O2'
4245         _cflags_size='-Os'
4246         _flags_filter='filter_out -Wdisabled-optimization'
4247     elif $_cc -v 2>&1 | grep -q Open64; then
4248         _type=open64
4249         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4250         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4251         _cflags_speed='-O2'
4252         _cflags_size='-Os'
4253         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4254     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4255         _type=armasm
4256         _ident=$($_cc | head -n1)
4257         # 4509: "This form of conditional instruction is deprecated"
4258         _flags="-nologo -ignore 4509"
4259         _flags_filter=armasm_flags
4260     elif $_cc 2>&1 | grep -q Intel; then
4261         _type=icl
4262         _ident=$($_cc 2>&1 | head -n1)
4263         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4264         # Not only is O3 broken on 13.x+ but it is slower on all previous
4265         # versions (tested) as well.
4266         _cflags_speed="-O2"
4267         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4268         if $_cc 2>&1 | grep -q Linker; then
4269             _ld_o='-out:$@'
4270         else
4271             _ld_o='-Fe$@'
4272         fi
4273         _cc_o='-Fo$@'
4274         _cc_e='-P'
4275         _flags_filter=icl_flags
4276         _ld_lib='lib%.a'
4277         _ld_path='-libpath:'
4278         # -Qdiag-error to make icl error when seeing certain unknown arguments
4279         _flags='-nologo -Qdiag-error:4044,10157'
4280         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4281         # with MSVC which enables it by default.
4282         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4283         disable stripping
4284     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4285         # lld can emulate multiple different linkers; in ms link.exe mode,
4286         # the -? parameter gives the help output which contains an identifyable
4287         # string, while it gives an error in other modes.
4288         _type=lld-link
4289         # The link.exe mode doesn't have a switch for getting the version,
4290         # but we can force it back to gnu mode and get the version from there.
4291         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4292         _ld_o='-out:$@'
4293         _flags_filter=msvc_flags
4294         _ld_lib='lib%.a'
4295         _ld_path='-libpath:'
4296     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4297         _type=msvc
4298         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4299         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4300         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4301         _cflags_speed="-O2"
4302         _cflags_size="-O1"
4303         _cflags_noopt="-O1"
4304         if $_cc -nologo- 2>&1 | grep -q Linker; then
4305             _ld_o='-out:$@'
4306         else
4307             _ld_o='-Fe$@'
4308         fi
4309         _cc_o='-Fo$@'
4310         _cc_e='-P -Fi$@'
4311         _flags_filter=msvc_flags
4312         _ld_lib='lib%.a'
4313         _ld_path='-libpath:'
4314         _flags='-nologo'
4315         disable stripping
4316     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4317         _type=cparser
4318         _ident=$($_cc --version | head -n1)
4319         _depflags='-MMD'
4320         _cflags_speed='-O4'
4321         _cflags_size='-O2'
4322         _flags_filter=cparser_flags
4323     fi
4324
4325     eval ${pfx}_type=\$_type
4326     eval ${pfx}_ident=\$_ident
4327 }
4328
4329 set_ccvars(){
4330     eval ${1}_C=\${_cc_c-\${${1}_C}}
4331     eval ${1}_E=\${_cc_e-\${${1}_E}}
4332     eval ${1}_O=\${_cc_o-\${${1}_O}}
4333
4334     if [ -n "$_depflags" ]; then
4335         eval ${1}_DEPFLAGS=\$_depflags
4336     else
4337         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4338         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4339         eval DEP${1}FLAGS=\$_flags
4340     fi
4341 }
4342
4343 probe_cc cc "$cc" "true"
4344 cflags_filter=$_flags_filter
4345 cflags_speed=$_cflags_speed
4346 cflags_size=$_cflags_size
4347 cflags_noopt=$_cflags_noopt
4348 add_cflags $_flags $_cflags
4349 cc_ldflags=$_ldflags
4350 set_ccvars CC
4351 set_ccvars CXX
4352
4353 probe_cc hostcc "$host_cc"
4354 host_cflags_filter=$_flags_filter
4355 host_cflags_speed=$_cflags_speed
4356 add_host_cflags  $_flags $_cflags
4357 set_ccvars HOSTCC
4358
4359 test -n "$cc_type" && enable $cc_type ||
4360     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4361
4362 : ${as_default:=$cc}
4363 : ${objcc_default:=$cc}
4364 : ${dep_cc_default:=$cc}
4365 : ${ld_default:=$cc}
4366 : ${host_ld_default:=$host_cc}
4367 set_default ar as objcc dep_cc ld ln_s host_ld windres
4368
4369 probe_cc as "$as"
4370 asflags_filter=$_flags_filter
4371 add_asflags $_flags $_cflags
4372 set_ccvars AS
4373
4374 probe_cc objcc "$objcc"
4375 objcflags_filter=$_flags_filter
4376 add_objcflags $_flags $_cflags
4377 set_ccvars OBJC
4378
4379 probe_cc ld "$ld"
4380 ldflags_filter=$_flags_filter
4381 add_ldflags $_flags $_ldflags
4382 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4383 LD_O=${_ld_o-$LD_O}
4384 LD_LIB=${_ld_lib-$LD_LIB}
4385 LD_PATH=${_ld_path-$LD_PATH}
4386
4387 probe_cc hostld "$host_ld"
4388 host_ldflags_filter=$_flags_filter
4389 add_host_ldflags $_flags $_ldflags
4390 HOSTLD_O=${_ld_o-$HOSTLD_O}
4391
4392 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4393     probe_cc depcc "$dep_cc"
4394     CCDEP=${_DEPCMD:-$DEPCMD}
4395     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4396     DEPCCFLAGS=$_flags
4397 fi
4398
4399 if $ar 2>&1 | grep -q Microsoft; then
4400     arflags="-nologo"
4401     ar_o='-out:$@'
4402 elif $ar 2>&1 | grep -q "\[D\] "; then
4403     arflags="rcD"
4404     ar_o='$@'
4405 else
4406     arflags="rc"
4407     ar_o='$@'
4408 fi
4409
4410 add_cflags $extra_cflags
4411 add_cxxflags $extra_cxxflags
4412 add_objcflags $extra_objcflags
4413 add_asflags $extra_cflags
4414
4415 if test -n "$sysroot"; then
4416     case "$cc_type" in
4417         gcc|llvm_gcc|clang)
4418             add_cppflags --sysroot="$sysroot"
4419             add_ldflags --sysroot="$sysroot"
4420         ;;
4421     esac
4422 fi
4423
4424 if test "$cpu" = host; then
4425     enabled cross_compile &&
4426         die "--cpu=host makes no sense when cross-compiling."
4427
4428     case "$cc_type" in
4429         gcc|llvm_gcc)
4430             check_native(){
4431                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4432                 sed -n "/cc1.*$1=/{
4433                             s/.*$1=\\([^ ]*\\).*/\\1/
4434                             p
4435                             q
4436                         }" $TMPE
4437             }
4438             cpu=$(check_native -march || check_native -mcpu)
4439         ;;
4440         clang)
4441             check_native(){
4442                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4443                 sed -n "/cc1.*-target-cpu /{
4444                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4445                             p
4446                             q
4447                         }" $TMPE
4448             }
4449             cpu=$(check_native -march)
4450         ;;
4451     esac
4452
4453     test "${cpu:-host}" = host &&
4454         die "--cpu=host not supported with compiler $cc"
4455 fi
4456
4457 # Deal with common $arch aliases
4458 case "$arch" in
4459     aarch64|arm64)
4460         arch="aarch64"
4461     ;;
4462     arm*|iPad*|iPhone*)
4463         arch="arm"
4464     ;;
4465     mips*|IP*)
4466         case "$arch" in
4467         *el)
4468             add_cppflags -EL
4469             add_ldflags -EL
4470         ;;
4471         *eb)
4472             add_cppflags -EB
4473             add_ldflags -EB
4474         ;;
4475         esac
4476         arch="mips"
4477     ;;
4478     parisc*|hppa*)
4479         arch="parisc"
4480     ;;
4481     "Power Macintosh"|ppc*|powerpc*)
4482         arch="ppc"
4483     ;;
4484     s390|s390x)
4485         arch="s390"
4486     ;;
4487     sh4|sh)
4488         arch="sh4"
4489     ;;
4490     sun4*|sparc*)
4491         arch="sparc"
4492     ;;
4493     tilegx|tile-gx)
4494         arch="tilegx"
4495     ;;
4496     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4497         arch="x86"
4498     ;;
4499 esac
4500
4501 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4502 enable $arch
4503
4504 # Add processor-specific flags
4505 if enabled aarch64; then
4506
4507     case $cpu in
4508         armv*)
4509             cpuflags="-march=$cpu"
4510         ;;
4511         *)
4512             cpuflags="-mcpu=$cpu"
4513         ;;
4514     esac
4515
4516 elif enabled alpha; then
4517
4518     cpuflags="-mcpu=$cpu"
4519
4520 elif enabled arm; then
4521
4522     check_arm_arch() {
4523         check_cpp_condition stddef.h \
4524             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4525             $cpuflags
4526     }
4527
4528     probe_arm_arch() {
4529         if   check_arm_arch 4;        then echo armv4
4530         elif check_arm_arch 4T;       then echo armv4t
4531         elif check_arm_arch 5;        then echo armv5
4532         elif check_arm_arch 5E;       then echo armv5e
4533         elif check_arm_arch 5T;       then echo armv5t
4534         elif check_arm_arch 5TE;      then echo armv5te
4535         elif check_arm_arch 5TEJ;     then echo armv5te
4536         elif check_arm_arch 6;        then echo armv6
4537         elif check_arm_arch 6J;       then echo armv6j
4538         elif check_arm_arch 6K;       then echo armv6k
4539         elif check_arm_arch 6Z;       then echo armv6z
4540         elif check_arm_arch 6KZ;      then echo armv6zk
4541         elif check_arm_arch 6ZK;      then echo armv6zk
4542         elif check_arm_arch 6T2;      then echo armv6t2
4543         elif check_arm_arch 7;        then echo armv7
4544         elif check_arm_arch 7A  7_A;  then echo armv7-a
4545         elif check_arm_arch 7S;       then echo armv7-a
4546         elif check_arm_arch 7R  7_R;  then echo armv7-r
4547         elif check_arm_arch 7M  7_M;  then echo armv7-m
4548         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4549         elif check_arm_arch 8A  8_A;  then echo armv8-a
4550         fi
4551     }
4552
4553     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4554
4555     case $cpu in
4556         armv*)
4557             cpuflags="-march=$cpu"
4558             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4559         ;;
4560         *)
4561             cpuflags="-mcpu=$cpu"
4562             case $cpu in
4563                 cortex-a*)                               subarch=armv7a  ;;
4564                 cortex-r*)                               subarch=armv7r  ;;
4565                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4566                 arm11*)                                  subarch=armv6   ;;
4567                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4568                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4569                 *)                             subarch=$(probe_arm_arch) ;;
4570             esac
4571         ;;
4572     esac
4573
4574     case "$subarch" in
4575         armv5t*)    enable fast_clz                ;;
4576         armv[6-8]*)
4577             enable fast_clz
4578             disabled fast_unaligned || enable fast_unaligned
4579             ;;
4580     esac
4581
4582 elif enabled avr32; then
4583
4584     case $cpu in
4585         ap7[02]0[0-2])
4586             subarch="avr32_ap"
4587             cpuflags="-mpart=$cpu"
4588         ;;
4589         ap)
4590             subarch="avr32_ap"
4591             cpuflags="-march=$cpu"
4592         ;;
4593         uc3[ab]*)
4594             subarch="avr32_uc"
4595             cpuflags="-mcpu=$cpu"
4596         ;;
4597         uc)
4598             subarch="avr32_uc"
4599             cpuflags="-march=$cpu"
4600         ;;
4601     esac
4602
4603 elif enabled bfin; then
4604
4605     cpuflags="-mcpu=$cpu"
4606
4607 elif enabled mips; then
4608
4609     cpuflags="-march=$cpu"
4610
4611     if [ "$cpu" != "generic" ]; then
4612         disable mips32r2
4613         disable mips32r5
4614         disable mips64r2
4615         disable mips32r6
4616         disable mips64r6
4617         disable loongson2
4618         disable loongson3
4619
4620         case $cpu in
4621             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4622                 enable mips32r2
4623                 disable msa
4624             ;;
4625             p5600|i6400|p6600)
4626                 disable mipsdsp
4627                 disable mipsdspr2
4628             ;;
4629             loongson*)
4630                 enable loongson2
4631                 enable loongson3
4632                 enable local_aligned
4633                 enable simd_align_16
4634                 enable fast_64bit
4635                 enable fast_clz
4636                 enable fast_cmov
4637                 enable fast_unaligned
4638                 disable aligned_stack
4639                 disable mipsfpu
4640                 disable mipsdsp
4641                 disable mipsdspr2
4642                 case $cpu in
4643                     loongson3*)
4644                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4645                     ;;
4646                     loongson2e)
4647                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4648                     ;;
4649                     loongson2f)
4650                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4651                     ;;
4652                 esac
4653             ;;
4654             *)
4655                 # Unknown CPU. Disable everything.
4656                 warn "unknown CPU. Disabling all MIPS optimizations."
4657                 disable mipsfpu
4658                 disable mipsdsp
4659                 disable mipsdspr2
4660                 disable msa
4661                 disable mmi
4662             ;;
4663         esac
4664
4665         case $cpu in
4666             24kc)
4667                 disable mipsfpu
4668                 disable mipsdsp
4669                 disable mipsdspr2
4670             ;;
4671             24kf*)
4672                 disable mipsdsp
4673                 disable mipsdspr2
4674             ;;
4675             24kec|34kc|1004kc)
4676                 disable mipsfpu
4677                 disable mipsdspr2
4678             ;;
4679             24kef*|34kf*|1004kf*)
4680                 disable mipsdspr2
4681             ;;
4682             74kc)
4683                 disable mipsfpu
4684             ;;
4685             p5600)
4686                 enable mips32r5
4687                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4688             ;;
4689             i6400)
4690                 enable mips64r6
4691                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4692             ;;
4693             p6600)
4694                 enable mips64r6
4695                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4696             ;;
4697         esac
4698     else
4699         # We do not disable anything. Is up to the user to disable the unwanted features.
4700         warn 'generic cpu selected'
4701     fi
4702
4703 elif enabled ppc; then
4704
4705     disable ldbrx
4706
4707     case $(tolower $cpu) in
4708         601|ppc601|powerpc601)
4709             cpuflags="-mcpu=601"
4710             disable altivec
4711         ;;
4712         603*|ppc603*|powerpc603*)
4713             cpuflags="-mcpu=603"
4714             disable altivec
4715         ;;
4716         604*|ppc604*|powerpc604*)
4717             cpuflags="-mcpu=604"
4718             disable altivec
4719         ;;
4720         g3|75*|ppc75*|powerpc75*)
4721             cpuflags="-mcpu=750"
4722             disable altivec
4723         ;;
4724         g4|745*|ppc745*|powerpc745*)
4725             cpuflags="-mcpu=7450"
4726             disable vsx
4727         ;;
4728         74*|ppc74*|powerpc74*)
4729             cpuflags="-mcpu=7400"
4730             disable vsx
4731         ;;
4732         g5|970|ppc970|powerpc970)
4733             cpuflags="-mcpu=970"
4734             disable vsx
4735         ;;
4736         power[3-6]*)
4737             cpuflags="-mcpu=$cpu"
4738             disable vsx
4739         ;;
4740         power[7-8]*)
4741             cpuflags="-mcpu=$cpu"
4742         ;;
4743         cell)
4744             cpuflags="-mcpu=cell"
4745             enable ldbrx
4746             disable vsx
4747         ;;
4748         e500mc)
4749             cpuflags="-mcpu=e500mc"
4750             disable altivec
4751         ;;
4752         e500v2)
4753             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4754             disable altivec
4755             disable dcbzl
4756         ;;
4757         e500)
4758             cpuflags="-mcpu=8540 -mhard-float"
4759             disable altivec
4760             disable dcbzl
4761         ;;
4762     esac
4763
4764 elif enabled sparc; then
4765
4766     case $cpu in
4767         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4768             cpuflags="-mcpu=$cpu"
4769         ;;
4770         ultrasparc*|niagara[234])
4771             cpuflags="-mcpu=$cpu"
4772         ;;
4773     esac
4774
4775 elif enabled x86; then
4776
4777     case $cpu in
4778         i[345]86|pentium)
4779             cpuflags="-march=$cpu"
4780             disable i686
4781             disable mmx
4782         ;;
4783         # targets that do NOT support nopl and conditional mov (cmov)
4784         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4785             cpuflags="-march=$cpu"
4786             disable i686
4787         ;;
4788         # targets that do support nopl and conditional mov (cmov)
4789         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4790         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4791         |amdfam10|barcelona|b[dt]ver*|znver*)
4792             cpuflags="-march=$cpu"
4793             enable i686
4794             enable fast_cmov
4795         ;;
4796         # targets that do support conditional mov but on which it's slow
4797         pentium4|pentium4m|prescott|nocona)
4798             cpuflags="-march=$cpu"
4799             enable i686
4800             disable fast_cmov
4801         ;;
4802     esac
4803
4804 fi
4805
4806 if [ "$cpu" != generic ]; then
4807     add_cflags  $cpuflags
4808     add_asflags $cpuflags
4809     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4810 fi
4811
4812 # compiler sanity check
4813 check_exec <<EOF
4814 int main(void){ return 0; }
4815 EOF
4816 if test "$?" != 0; then
4817     echo "$cc is unable to create an executable file."
4818     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4819         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4820         echo "Only do this if you know what cross compiling means."
4821     fi
4822     die "C compiler test failed."
4823 fi
4824
4825 add_cppflags -D_ISOC99_SOURCE
4826 add_cxxflags -D__STDC_CONSTANT_MACROS
4827 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4828
4829 # some compilers silently accept -std=c11, so we also need to check that the
4830 # version macro is defined properly
4831 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4832     add_cflags -std=c11 ||
4833     check_cflags -std=c99
4834
4835 check_cppflags -D_FILE_OFFSET_BITS=64
4836 check_cppflags -D_LARGEFILE_SOURCE
4837
4838 add_host_cppflags -D_ISOC99_SOURCE
4839 check_host_cflags -std=c99
4840 check_host_cflags -Wall
4841 check_host_cflags $host_cflags_speed
4842
4843 check_64bit(){
4844     arch32=$1
4845     arch64=$2
4846     expr=$3
4847     check_code cc "" "int test[2*($expr) - 1]" &&
4848         subarch=$arch64 || subarch=$arch32
4849     enable $subarch
4850 }
4851
4852 case "$arch" in
4853     aarch64|alpha|ia64)
4854         enabled shared && enable_weak pic
4855     ;;
4856     mips)
4857         check_64bit mips mips64 '_MIPS_SIM > 1'
4858         enabled shared && enable_weak pic
4859     ;;
4860     parisc)
4861         check_64bit parisc parisc64 'sizeof(void *) > 4'
4862         enabled shared && enable_weak pic
4863     ;;
4864     ppc)
4865         check_64bit ppc ppc64 'sizeof(void *) > 4'
4866         enabled shared && enable_weak pic
4867     ;;
4868     s390)
4869         check_64bit s390 s390x 'sizeof(void *) > 4'
4870         enabled shared && enable_weak pic
4871     ;;
4872     sparc)
4873         check_64bit sparc sparc64 'sizeof(void *) > 4'
4874         enabled shared && enable_weak pic
4875     ;;
4876     x86)
4877         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4878         # Treat x32 as x64 for now. Note it also needs pic if shared
4879         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4880             subarch=x86_64 && enable x86_64 && disable x86_32
4881         if enabled x86_64; then
4882             enabled shared && enable_weak pic
4883             objformat=elf64
4884         fi
4885     ;;
4886 esac
4887
4888 # OS specific
4889 case $target_os in
4890     aix)
4891         SHFLAGS=-shared
4892         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4893         enabled shared && add_ldflags -Wl,-brtl
4894         arflags='-Xany -r -c'
4895         ;;
4896     android)
4897         disable symver
4898         enable section_data_rel_ro
4899         SLIB_INSTALL_NAME='$(SLIBNAME)'
4900         SLIB_INSTALL_LINKS=
4901         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4902         ;;
4903     haiku)
4904         prefix_default="/boot/common"
4905         network_extralibs="-lnetwork"
4906         host_extralibs=
4907         ;;
4908     sunos)
4909         SHFLAGS='-shared -Wl,-h,$$(@F)'
4910         enabled x86 && append SHFLAGS -mimpure-text
4911         network_extralibs="-lsocket -lnsl"
4912         add_cppflags -D__EXTENSIONS__
4913         # When using suncc to build, the Solaris linker will mark
4914         # an executable with each instruction set encountered by
4915         # the Solaris assembler.  As our libraries contain their own
4916         # guards for processor-specific code, instead suppress
4917         # generation of the HWCAPS ELF section on Solaris x86 only.
4918         enabled_all suncc x86 &&
4919             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4920             add_ldflags -Wl,-M,mapfile
4921         nm_default='nm -P -g'
4922         version_script='-M'
4923         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4924         ;;