avcodec/huffyuvdec: Check input buffer size
[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 remove_suffix(){
572     suffix=$1
573     shift
574     for v; do echo ${v%$suffix}; done
575 }
576
577 set_all(){
578     value=$1
579     shift
580     for var in $*; do
581         eval $var=$value
582     done
583 }
584
585 set_weak(){
586     value=$1
587     shift
588     for var; do
589         eval : \${$var:=$value}
590     done
591 }
592
593 sanitize_var_name(){
594     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
595 }
596
597 set_sanitized(){
598     var=$1
599     shift
600     eval $(sanitize_var_name "$var")='$*'
601 }
602
603 get_sanitized(){
604     eval echo \$$(sanitize_var_name "$1")
605 }
606
607 pushvar(){
608     for pvar in $*; do
609         eval level=\${${pvar}_level:=0}
610         eval ${pvar}_${level}="\$$pvar"
611         eval ${pvar}_level=$(($level+1))
612     done
613 }
614
615 popvar(){
616     for pvar in $*; do
617         eval level=\${${pvar}_level:-0}
618         test $level = 0 && continue
619         eval level=$(($level-1))
620         eval $pvar="\${${pvar}_${level}}"
621         eval ${pvar}_level=$level
622         eval unset ${pvar}_${level}
623     done
624 }
625
626 request(){
627     for var in $*; do
628         eval ${var}_requested=yes
629         eval $var=
630     done
631 }
632
633 enable(){
634     set_all yes $*
635 }
636
637 disable(){
638     set_all no $*
639 }
640
641 enable_weak(){
642     set_weak yes $*
643 }
644
645 disable_weak(){
646     set_weak no $*
647 }
648
649 enable_sanitized(){
650     for var; do
651         enable $(sanitize_var_name $var)
652     done
653 }
654
655 disable_sanitized(){
656     for var; do
657         disable $(sanitize_var_name $var)
658     done
659 }
660
661 do_enable_deep(){
662     for var; do
663         enabled $var && continue
664         eval sel="\$${var}_select"
665         eval sgs="\$${var}_suggest"
666         pushvar var sgs
667         enable_deep $sel
668         popvar sgs
669         enable_deep_weak $sgs
670         popvar var
671     done
672 }
673
674 enable_deep(){
675     do_enable_deep $*
676     enable $*
677 }
678
679 enable_deep_weak(){
680     for var; do
681         disabled $var && continue
682         pushvar var
683         do_enable_deep $var
684         popvar var
685         enable_weak $var
686     done
687 }
688
689 requested(){
690     test "${1#!}" = "$1" && op="=" || op="!="
691     eval test "x\$${1#!}_requested" $op "xyes"
692 }
693
694 enabled(){
695     test "${1#!}" = "$1" && op="=" || op="!="
696     eval test "x\$${1#!}" $op "xyes"
697 }
698
699 disabled(){
700     test "${1#!}" = "$1" && op="=" || op="!="
701     eval test "x\$${1#!}" $op "xno"
702 }
703
704 enabled_all(){
705     for opt; do
706         enabled $opt || return 1
707     done
708 }
709
710 disabled_all(){
711     for opt; do
712         disabled $opt || return 1
713     done
714 }
715
716 enabled_any(){
717     for opt; do
718         enabled $opt && return 0
719     done
720 }
721
722 disabled_any(){
723     for opt; do
724         disabled $opt && return 0
725     done
726     return 1
727 }
728
729 set_default(){
730     for opt; do
731         eval : \${$opt:=\$${opt}_default}
732     done
733 }
734
735 is_in(){
736     value=$1
737     shift
738     for var in $*; do
739         [ $var = $value ] && return 0
740     done
741     return 1
742 }
743
744 check_deps(){
745     for cfg; do
746         enabled ${cfg}_checking && die "Circular dependency for $cfg."
747         disabled ${cfg}_checking && continue
748         enable ${cfg}_checking
749
750         eval dep_all="\$${cfg}_deps"
751         eval dep_any="\$${cfg}_deps_any"
752         eval dep_con="\$${cfg}_conflict"
753         eval dep_sel="\$${cfg}_select"
754         eval dep_sgs="\$${cfg}_suggest"
755         eval dep_ifa="\$${cfg}_if"
756         eval dep_ifn="\$${cfg}_if_any"
757
758         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
759         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
760         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
761
762         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
763         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
764         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
765         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
766         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
767         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
768
769         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
770
771         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
772             # filter out library deps, these do not belong in extralibs
773             is_in $dep $LIBRARY_LIST && continue
774             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
775         done
776
777         disable ${cfg}_checking
778     done
779 }
780
781 print_config(){
782     pfx=$1
783     files=$2
784     shift 2
785     map 'eval echo "$v \${$v:-no}"' "$@" |
786     awk "BEGIN { split(\"$files\", files) }
787         {
788             c = \"$pfx\" toupper(\$1);
789             v = \$2;
790             sub(/yes/, 1, v);
791             sub(/no/,  0, v);
792             for (f in files) {
793                 file = files[f];
794                 if (file ~ /\\.h\$/) {
795                     printf(\"#define %s %d\\n\", c, v) >>file;
796                 } else if (file ~ /\\.asm\$/) {
797                     printf(\"%%define %s %d\\n\", c, v) >>file;
798                 } else if (file ~ /\\.mak\$/) {
799                     n = -v ? \"\" : \"!\";
800                     printf(\"%s%s=yes\\n\", n, c) >>file;
801                 } else if (file ~ /\\.texi\$/) {
802                     pre = -v ? \"\" : \"@c \";
803                     yesno = \$2;
804                     c2 = tolower(c);
805                     gsub(/_/, \"-\", c2);
806                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
807                 }
808             }
809         }"
810 }
811
812 print_enabled(){
813     suf=$1
814     shift
815     for v; do
816         enabled $v && printf "%s\n" ${v%$suf}
817     done
818 }
819
820 append(){
821     var=$1
822     shift
823     eval "$var=\"\$$var $*\""
824 }
825
826 prepend(){
827     var=$1
828     shift
829     eval "$var=\"$* \$$var\""
830 }
831
832 unique(){
833     var=$1
834     uniq_list=""
835     for tok in $(eval echo \$$var); do
836         uniq_list="$(filter_out $tok $uniq_list) $tok"
837     done
838     eval "$var=\"${uniq_list}\""
839 }
840
841 resolve(){
842     var=$1
843     tmpvar=
844     for entry in $(eval echo \$$var); do
845         tmpvar="$tmpvar $(eval echo \$${entry})"
846     done
847     eval "$var=\"${tmpvar}\""
848 }
849
850 add_cppflags(){
851     append CPPFLAGS "$@"
852 }
853
854 add_cflags(){
855     append CFLAGS $($cflags_filter "$@")
856 }
857
858 add_cflags_headers(){
859     append CFLAGS_HEADERS $($cflags_filter "$@")
860 }
861
862 add_cxxflags(){
863     append CXXFLAGS $($cflags_filter "$@")
864 }
865
866 add_asflags(){
867     append ASFLAGS $($asflags_filter "$@")
868 }
869
870 add_objcflags(){
871     append OBJCFLAGS $($objcflags_filter "$@")
872 }
873
874 add_ldflags(){
875     append LDFLAGS $($ldflags_filter "$@")
876 }
877
878 add_ldexeflags(){
879     append LDEXEFLAGS $($ldflags_filter "$@")
880 }
881
882 add_ldsoflags(){
883     append LDSOFLAGS $($ldflags_filter "$@")
884 }
885
886 add_stripflags(){
887     append ASMSTRIPFLAGS "$@"
888 }
889
890 add_extralibs(){
891     prepend extralibs $($ldflags_filter "$@")
892 }
893
894 add_host_cppflags(){
895     append host_cppflags "$@"
896 }
897
898 add_host_cflags(){
899     append host_cflags $($host_cflags_filter "$@")
900 }
901
902 add_host_ldflags(){
903     append host_ldflags $($host_ldflags_filter "$@")
904 }
905
906 add_compat(){
907     append compat_objs $1
908     shift
909     map 'add_cppflags -D$v' "$@"
910 }
911
912 check_cmd(){
913     log "$@"
914     "$@" >> $logfile 2>&1
915 }
916
917 check_stat(){
918     log check_stat "$@"
919     stat "$1" >> $logfile 2>&1
920 }
921
922 cc_o(){
923     eval printf '%s\\n' $CC_O
924 }
925
926 cc_e(){
927     eval printf '%s\\n' $CC_E
928 }
929
930 check_cc(){
931     log check_cc "$@"
932     cat > $TMPC
933     log_file $TMPC
934     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
935 }
936
937 check_cxx(){
938     log check_cxx "$@"
939     cat > $TMPCPP
940     log_file $TMPCPP
941     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
942 }
943
944 check_objcc(){
945     log check_objcc "$@"
946     cat > $TMPM
947     log_file $TMPM
948     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
949 }
950
951 check_cpp(){
952     log check_cpp "$@"
953     cat > $TMPC
954     log_file $TMPC
955     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
956 }
957
958 as_o(){
959     eval printf '%s\\n' $AS_O
960 }
961
962 check_as(){
963     log check_as "$@"
964     cat > $TMPS
965     log_file $TMPS
966     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
967 }
968
969 check_inline_asm(){
970     log check_inline_asm "$@"
971     name="$1"
972     code="$2"
973     shift 2
974     disable $name
975     check_cc "$@" <<EOF && enable $name
976 void foo(void){ __asm__ volatile($code); }
977 EOF
978 }
979
980 check_inline_asm_flags(){
981     log check_inline_asm_flags "$@"
982     name="$1"
983     code="$2"
984     flags=''
985     shift 2
986     while [ "$1" != "" ]; do
987       append flags $1
988       shift
989     done;
990     disable $name
991     cat > $TMPC <<EOF
992 void foo(void){ __asm__ volatile($code); }
993 EOF
994     log_file $TMPC
995     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
996     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
997 }
998
999 check_insn(){
1000     log check_insn "$@"
1001     check_inline_asm ${1}_inline "\"$2\""
1002     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
1003 }
1004
1005 check_x86asm(){
1006     log check_x86asm "$@"
1007     echo "$1" > $TMPS
1008     log_file $TMPS
1009     shift 1
1010     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1011 }
1012
1013 ld_o(){
1014     eval printf '%s\\n' $LD_O
1015 }
1016
1017 check_ld(){
1018     log check_ld "$@"
1019     type=$1
1020     shift 1
1021     flags=$(filter_out '-l*|*.so' $@)
1022     libs=$(filter '-l*|*.so' $@)
1023     check_$type $($cflags_filter $flags) || return
1024     flags=$($ldflags_filter $flags)
1025     libs=$($ldflags_filter $libs)
1026     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1027 }
1028
1029 print_include(){
1030     hdr=$1
1031     test "${hdr%.h}" = "${hdr}" &&
1032         echo "#include $hdr"    ||
1033         echo "#include <$hdr>"
1034 }
1035
1036 check_code(){
1037     log check_code "$@"
1038     check=$1
1039     headers=$2
1040     code=$3
1041     shift 3
1042     {
1043         for hdr in $headers; do
1044             print_include $hdr
1045         done
1046         echo "int main(void) { $code; return 0; }"
1047     } | check_$check "$@"
1048 }
1049
1050 check_cppflags(){
1051     log check_cppflags "$@"
1052     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1053 #include <stdlib.h>
1054 EOF
1055 }
1056
1057 test_cflags(){
1058     log test_cflags "$@"
1059     set -- $($cflags_filter "$@")
1060     check_cc "$@" <<EOF
1061 int x;
1062 EOF
1063 }
1064
1065 check_cflags(){
1066     log check_cflags "$@"
1067     test_cflags "$@" && add_cflags "$@"
1068 }
1069
1070 check_cxxflags(){
1071     log check_cxxflags "$@"
1072     set -- $($cflags_filter "$@")
1073     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1074 int x;
1075 EOF
1076 }
1077
1078 test_objcflags(){
1079     log test_objcflags "$@"
1080     set -- $($objcflags_filter "$@")
1081     check_objcc "$@" <<EOF
1082 int x;
1083 EOF
1084 }
1085
1086 check_objcflags(){
1087     log check_objcflags "$@"
1088     test_objcflags "$@" && add_objcflags "$@"
1089 }
1090
1091 test_ldflags(){
1092     log test_ldflags "$@"
1093     set -- $($ldflags_filter "$@")
1094     check_ld "cc" "$@" <<EOF
1095 int main(void){ return 0; }
1096 EOF
1097 }
1098
1099 check_ldflags(){
1100     log check_ldflags "$@"
1101     test_ldflags "$@" && add_ldflags "$@"
1102 }
1103
1104 test_stripflags(){
1105     log test_stripflags "$@"
1106     # call check_cc to get a fresh TMPO
1107     check_cc <<EOF
1108 int main(void) { return 0; }
1109 EOF
1110     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1111 }
1112
1113 check_stripflags(){
1114     log check_stripflags "$@"
1115     test_stripflags "$@" && add_stripflags "$@"
1116 }
1117
1118 check_header(){
1119     log check_header "$@"
1120     headers=$1
1121     shift
1122     disable_sanitized $headers
1123     {
1124         for hdr in $headers; do
1125             print_include $hdr
1126         done
1127         echo "int x;"
1128     } | check_cpp "$@" && enable_sanitized $headers
1129 }
1130
1131 check_header_objcc(){
1132     log check_header_objcc "$@"
1133     rm -f -- "$TMPO"
1134     header=$1
1135     shift
1136     disable_sanitized $header
1137     {
1138        echo "#include <$header>"
1139        echo "int main(void) { return 0; }"
1140     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1141 }
1142
1143 check_apple_framework(){
1144     log check_apple_framework "$@"
1145     framework="$1"
1146     name="$(tolower $framework)"
1147     header="${framework}/${framework}.h"
1148     disable $name
1149     check_header_objcc $header &&
1150         enable $name && eval ${name}_extralibs='"-framework $framework"'
1151 }
1152
1153 check_func(){
1154     log check_func "$@"
1155     func=$1
1156     shift
1157     disable $func
1158     check_ld "cc" "$@" <<EOF && enable $func
1159 extern int $func();
1160 int main(void){ $func(); }
1161 EOF
1162 }
1163
1164 check_complexfunc(){
1165     log check_complexfunc "$@"
1166     func=$1
1167     narg=$2
1168     shift 2
1169     test $narg = 2 && args="f, g" || args="f * I"
1170     disable $func
1171     check_ld "cc" "$@" <<EOF && enable $func
1172 #include <complex.h>
1173 #include <math.h>
1174 float foo(complex float f, complex float g) { return $func($args); }
1175 int main(void){ return (int) foo; }
1176 EOF
1177 }
1178
1179 check_mathfunc(){
1180     log check_mathfunc "$@"
1181     func=$1
1182     narg=$2
1183     shift 2
1184     test $narg = 2 && args="f, g" || args="f"
1185     disable $func
1186     check_ld "cc" "$@" <<EOF && enable $func
1187 #include <math.h>
1188 float foo(float f, float g) { return $func($args); }
1189 int main(void){ return (int) foo; }
1190 EOF
1191 }
1192
1193 check_func_headers(){
1194     log check_func_headers "$@"
1195     headers=$1
1196     funcs=$2
1197     shift 2
1198     {
1199         for hdr in $headers; do
1200             print_include $hdr
1201         done
1202         echo "#include <stdint.h>"
1203         for func in $funcs; do
1204             echo "long check_$func(void) { return (long) $func; }"
1205         done
1206         echo "int main(void) { int ret = 0;"
1207         # LTO could optimize out the test functions without this
1208         for func in $funcs; do
1209             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1210         done
1211         echo "return ret; }"
1212     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1213 }
1214
1215 check_class_headers_cpp(){
1216     log check_class_headers_cpp "$@"
1217     headers=$1
1218     classes=$2
1219     shift 2
1220     {
1221         for hdr in $headers; do
1222             echo "#include <$hdr>"
1223         done
1224         echo "int main(void) { "
1225         i=1
1226         for class in $classes; do
1227             echo "$class obj$i;"
1228             i=$(expr $i + 1)
1229         done
1230         echo "return 0; }"
1231     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1232 }
1233
1234 check_cpp_condition(){
1235     log check_cpp_condition "$@"
1236     header=$1
1237     condition=$2
1238     shift 2
1239     check_cpp "$@" <<EOF
1240 #include <$header>
1241 #if !($condition)
1242 #error "unsatisfied condition: $condition"
1243 #endif
1244 EOF
1245 }
1246
1247 test_cflags_cc(){
1248     log test_cflags_cc "$@"
1249     flags=$1
1250     header=$2
1251     condition=$3
1252     shift 3
1253     set -- $($cflags_filter "$flags")
1254     check_cc "$@" <<EOF
1255 #include <$header>
1256 #if !($condition)
1257 #error "unsatisfied condition: $condition"
1258 #endif
1259 EOF
1260 }
1261
1262 check_lib(){
1263     log check_lib "$@"
1264     name="$1"
1265     headers="$2"
1266     funcs="$3"
1267     shift 3
1268     disable $name
1269     check_func_headers "$headers" "$funcs" "$@" &&
1270         enable $name && eval ${name}_extralibs="\$@"
1271 }
1272
1273 check_lib_cpp(){
1274     log check_lib_cpp "$@"
1275     name="$1"
1276     headers="$2"
1277     classes="$3"
1278     shift 3
1279     disable $name
1280     check_class_headers_cpp "$headers" "$classes" "$@" &&
1281         enable $name && eval ${name}_extralibs="\$@"
1282 }
1283
1284 test_pkg_config(){
1285     log test_pkg_config "$@"
1286     name="$1"
1287     pkg_version="$2"
1288     pkg="${2%% *}"
1289     headers="$3"
1290     funcs="$4"
1291     shift 4
1292     disable $name
1293     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1294     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1295     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1296     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1297         enable $name &&
1298         set_sanitized "${name}_cflags"    $pkg_cflags &&
1299         set_sanitized "${name}_extralibs" $pkg_libs
1300 }
1301
1302 check_pkg_config(){
1303     log check_pkg_config "$@"
1304     name="$1"
1305     test_pkg_config "$@" &&
1306         eval add_cflags \$${name}_cflags
1307 }
1308
1309 check_exec(){
1310     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1311 }
1312
1313 check_exec_crash(){
1314     log check_exec_crash "$@"
1315     code=$(cat)
1316
1317     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1318     # are safe but may not be available everywhere.  Thus we use
1319     # raise(SIGTERM) instead.  The check is run in a subshell so we
1320     # can redirect the "Terminated" message from the shell.  SIGBUS
1321     # is not defined by standard C so it is used conditionally.
1322
1323     (check_exec "$@") >> $logfile 2>&1 <<EOF
1324 #include <signal.h>
1325 static void sighandler(int sig){
1326     raise(SIGTERM);
1327 }
1328 int foo(void){
1329     $code
1330 }
1331 int (*func_ptr)(void) = foo;
1332 int main(void){
1333     signal(SIGILL, sighandler);
1334     signal(SIGFPE, sighandler);
1335     signal(SIGSEGV, sighandler);
1336 #ifdef SIGBUS
1337     signal(SIGBUS, sighandler);
1338 #endif
1339     return func_ptr();
1340 }
1341 EOF
1342 }
1343
1344 check_type(){
1345     log check_type "$@"
1346     headers=$1
1347     type=$2
1348     shift 2
1349     disable_sanitized "$type"
1350     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1351 }
1352
1353 check_struct(){
1354     log check_struct "$@"
1355     headers=$1
1356     struct=$2
1357     member=$3
1358     shift 3
1359     disable_sanitized "${struct}_${member}"
1360     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1361         enable_sanitized "${struct}_${member}"
1362 }
1363
1364 check_builtin(){
1365     log check_builtin "$@"
1366     name=$1
1367     headers=$2
1368     builtin=$3
1369     shift 3
1370     disable "$name"
1371     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1372 }
1373
1374 check_compile_assert(){
1375     log check_compile_assert "$@"
1376     name=$1
1377     headers=$2
1378     condition=$3
1379     shift 3
1380     disable "$name"
1381     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1382 }
1383
1384 require(){
1385     log require "$@"
1386     name_version="$1"
1387     name="${1%% *}"
1388     headers="$2"
1389     func="$3"
1390     shift 3
1391     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1392 }
1393
1394 require_cpp(){
1395     name="$1"
1396     headers="$2"
1397     classes="$3"
1398     shift 3
1399     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1400 }
1401
1402 require_header(){
1403     log require_header "$@"
1404     headers="$1"
1405     shift
1406     check_header "$headers" "$@" || die "ERROR: $headers not found"
1407 }
1408
1409 require_cpp_condition(){
1410     log require_cpp_condition "$@"
1411     header="$1"
1412     condition="$2"
1413     shift 2
1414     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1415 }
1416
1417 require_pkg_config(){
1418     log require_pkg_config "$@"
1419     pkg_version="$2"
1420     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1421 }
1422
1423 hostcc_e(){
1424     eval printf '%s\\n' $HOSTCC_E
1425 }
1426
1427 hostcc_o(){
1428     eval printf '%s\\n' $HOSTCC_O
1429 }
1430
1431 check_host_cc(){
1432     log check_host_cc "$@"
1433     cat > $TMPC
1434     log_file $TMPC
1435     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1436 }
1437
1438 check_host_cpp(){
1439     log check_host_cpp "$@"
1440     cat > $TMPC
1441     log_file $TMPC
1442     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1443 }
1444
1445 check_host_cppflags(){
1446     log check_host_cppflags "$@"
1447     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1448 #include <stdlib.h>
1449 EOF
1450 }
1451
1452 check_host_cflags(){
1453     log check_host_cflags "$@"
1454     set -- $($host_cflags_filter "$@")
1455     check_host_cc "$@" <<EOF && append host_cflags "$@"
1456 int x;
1457 EOF
1458 }
1459
1460 check_host_cpp_condition(){
1461     log check_host_cpp_condition "$@"
1462     header=$1
1463     condition=$2
1464     shift 2
1465     check_host_cpp "$@" <<EOF
1466 #include <$header>
1467 #if !($condition)
1468 #error "unsatisfied condition: $condition"
1469 #endif
1470 EOF
1471 }
1472
1473 cp_if_changed(){
1474     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1475     mkdir -p "$(dirname $2)"
1476     cp -f "$1" "$2"
1477 }
1478
1479 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1480 # system-dependent things.
1481
1482 AVCODEC_COMPONENTS="
1483     bsfs
1484     decoders
1485     encoders
1486     hwaccels
1487     parsers
1488 "
1489
1490 AVDEVICE_COMPONENTS="
1491     indevs
1492     outdevs
1493 "
1494
1495 AVFILTER_COMPONENTS="
1496     filters
1497 "
1498
1499 AVFORMAT_COMPONENTS="
1500     demuxers
1501     muxers
1502     protocols
1503 "
1504
1505 COMPONENT_LIST="
1506     $AVCODEC_COMPONENTS
1507     $AVDEVICE_COMPONENTS
1508     $AVFILTER_COMPONENTS
1509     $AVFORMAT_COMPONENTS
1510 "
1511
1512 EXAMPLE_LIST="
1513     avio_dir_cmd_example
1514     avio_reading_example
1515     decode_audio_example
1516     decode_video_example
1517     demuxing_decoding_example
1518     encode_audio_example
1519     encode_video_example
1520     extract_mvs_example
1521     filter_audio_example
1522     filtering_audio_example
1523     filtering_video_example
1524     http_multiclient_example
1525     hw_decode_example
1526     metadata_example
1527     muxing_example
1528     qsvdec_example
1529     remuxing_example
1530     resampling_audio_example
1531     scaling_video_example
1532     transcode_aac_example
1533     transcoding_example
1534     vaapi_encode_example
1535     vaapi_transcode_example
1536 "
1537
1538 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1539     alsa
1540     appkit
1541     avfoundation
1542     bzlib
1543     coreimage
1544     iconv
1545     libxcb
1546     libxcb_shm
1547     libxcb_shape
1548     libxcb_xfixes
1549     lzma
1550     schannel
1551     sdl2
1552     securetransport
1553     sndio
1554     xlib
1555     zlib
1556 "
1557
1558 EXTERNAL_LIBRARY_GPL_LIST="
1559     avisynth
1560     frei0r
1561     libcdio
1562     librubberband
1563     libvidstab
1564     libx264
1565     libx265
1566     libxavs
1567     libxvid
1568 "
1569
1570 EXTERNAL_LIBRARY_NONFREE_LIST="
1571     decklink
1572     libndi_newtek
1573     libfdk_aac
1574     openssl
1575     libtls
1576 "
1577
1578 EXTERNAL_LIBRARY_VERSION3_LIST="
1579     gmp
1580     libopencore_amrnb
1581     libopencore_amrwb
1582     libvmaf
1583     libvo_amrwbenc
1584     rkmpp
1585 "
1586
1587 EXTERNAL_LIBRARY_GPLV3_LIST="
1588     libsmbclient
1589 "
1590
1591 EXTERNAL_LIBRARY_LIST="
1592     $EXTERNAL_LIBRARY_GPL_LIST
1593     $EXTERNAL_LIBRARY_NONFREE_LIST
1594     $EXTERNAL_LIBRARY_VERSION3_LIST
1595     $EXTERNAL_LIBRARY_GPLV3_LIST
1596     chromaprint
1597     gcrypt
1598     gnutls
1599     jni
1600     ladspa
1601     libass
1602     libbluray
1603     libbs2b
1604     libcaca
1605     libcelt
1606     libdc1394
1607     libdrm
1608     libflite
1609     libfontconfig
1610     libfreetype
1611     libfribidi
1612     libgme
1613     libgsm
1614     libiec61883
1615     libilbc
1616     libjack
1617     libkvazaar
1618     libmodplug
1619     libmp3lame
1620     libmysofa
1621     libopencv
1622     libopenh264
1623     libopenjpeg
1624     libopenmpt
1625     libopus
1626     libpulse
1627     librsvg
1628     librtmp
1629     libshine
1630     libsmbclient
1631     libsnappy
1632     libsoxr
1633     libspeex
1634     libssh
1635     libtesseract
1636     libtheora
1637     libtwolame
1638     libv4l2
1639     libvorbis
1640     libvpx
1641     libwavpack
1642     libwebp
1643     libxml2
1644     libzimg
1645     libzmq
1646     libzvbi
1647     lv2
1648     mediacodec
1649     openal
1650     opengl
1651 "
1652
1653 HWACCEL_AUTODETECT_LIBRARY_LIST="
1654     amf
1655     audiotoolbox
1656     crystalhd
1657     cuda
1658     cuvid
1659     d3d11va
1660     dxva2
1661     nvdec
1662     nvenc
1663     vaapi
1664     vdpau
1665     videotoolbox
1666     v4l2_m2m
1667     xvmc
1668 "
1669
1670 # catchall list of things that require external libs to link
1671 EXTRALIBS_LIST="
1672     cpu_init
1673     cws2fws
1674 "
1675
1676 HWACCEL_LIBRARY_NONFREE_LIST="
1677     cuda_sdk
1678     libnpp
1679 "
1680
1681 HWACCEL_LIBRARY_LIST="
1682     $HWACCEL_LIBRARY_NONFREE_LIST
1683     libmfx
1684     mmal
1685     omx
1686     opencl
1687 "
1688
1689 DOCUMENT_LIST="
1690     doc
1691     htmlpages
1692     manpages
1693     podpages
1694     txtpages
1695 "
1696
1697 FEATURE_LIST="
1698     ftrapv
1699     gray
1700     hardcoded_tables
1701     omx_rpi
1702     runtime_cpudetect
1703     safe_bitstream_reader
1704     shared
1705     small
1706     static
1707     swscale_alpha
1708 "
1709
1710 LIBRARY_LIST="
1711     avcodec
1712     avdevice
1713     avfilter
1714     avformat
1715     avresample
1716     avutil
1717     postproc
1718     swresample
1719     swscale
1720 "
1721
1722 LICENSE_LIST="
1723     gpl
1724     nonfree
1725     version3
1726 "
1727
1728 PROGRAM_LIST="
1729     ffplay
1730     ffprobe
1731     ffmpeg
1732 "
1733
1734 SUBSYSTEM_LIST="
1735     dct
1736     dwt
1737     error_resilience
1738     faan
1739     fast_unaligned
1740     fft
1741     lsp
1742     lzo
1743     mdct
1744     pixelutils
1745     network
1746     rdft
1747 "
1748
1749 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1750 CONFIG_LIST="
1751     $DOCUMENT_LIST
1752     $EXAMPLE_LIST
1753     $EXTERNAL_LIBRARY_LIST
1754     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1755     $HWACCEL_LIBRARY_LIST
1756     $HWACCEL_AUTODETECT_LIBRARY_LIST
1757     $FEATURE_LIST
1758     $LICENSE_LIST
1759     $LIBRARY_LIST
1760     $PROGRAM_LIST
1761     $SUBSYSTEM_LIST
1762     autodetect
1763     fontconfig
1764     linux_perf
1765     memory_poisoning
1766     neon_clobber_test
1767     ossfuzz
1768     pic
1769     thumb
1770     valgrind_backtrace
1771     xmm_clobber_test
1772     $COMPONENT_LIST
1773 "
1774
1775 THREADS_LIST="
1776     pthreads
1777     os2threads
1778     w32threads
1779 "
1780
1781 ATOMICS_LIST="
1782     atomics_gcc
1783     atomics_suncc
1784     atomics_win32
1785 "
1786
1787 AUTODETECT_LIBS="
1788     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1789     $HWACCEL_AUTODETECT_LIBRARY_LIST
1790     $THREADS_LIST
1791 "
1792
1793 ARCH_LIST="
1794     aarch64
1795     alpha
1796     arm
1797     avr32
1798     avr32_ap
1799     avr32_uc
1800     bfin
1801     ia64
1802     m68k
1803     mips
1804     mips64
1805     parisc
1806     ppc
1807     ppc64
1808     s390
1809     sh4
1810     sparc
1811     sparc64
1812     tilegx
1813     tilepro
1814     tomi
1815     x86
1816     x86_32
1817     x86_64
1818 "
1819
1820 ARCH_EXT_LIST_ARM="
1821     armv5te
1822     armv6
1823     armv6t2
1824     armv8
1825     neon
1826     vfp
1827     vfpv3
1828     setend
1829 "
1830
1831 ARCH_EXT_LIST_MIPS="
1832     mipsfpu
1833     mips32r2
1834     mips32r5
1835     mips64r2
1836     mips32r6
1837     mips64r6
1838     mipsdsp
1839     mipsdspr2
1840     msa
1841 "
1842
1843 ARCH_EXT_LIST_LOONGSON="
1844     loongson2
1845     loongson3
1846     mmi
1847 "
1848
1849 ARCH_EXT_LIST_X86_SIMD="
1850     aesni
1851     amd3dnow
1852     amd3dnowext
1853     avx
1854     avx2
1855     avx512
1856     fma3
1857     fma4
1858     mmx
1859     mmxext
1860     sse
1861     sse2
1862     sse3
1863     sse4
1864     sse42
1865     ssse3
1866     xop
1867 "
1868
1869 ARCH_EXT_LIST_PPC="
1870     altivec
1871     dcbzl
1872     ldbrx
1873     power8
1874     ppc4xx
1875     vsx
1876 "
1877
1878 ARCH_EXT_LIST_X86="
1879     $ARCH_EXT_LIST_X86_SIMD
1880     cpunop
1881     i686
1882 "
1883
1884 ARCH_EXT_LIST="
1885     $ARCH_EXT_LIST_ARM
1886     $ARCH_EXT_LIST_PPC
1887     $ARCH_EXT_LIST_X86
1888     $ARCH_EXT_LIST_MIPS
1889     $ARCH_EXT_LIST_LOONGSON
1890 "
1891
1892 ARCH_FEATURES="
1893     aligned_stack
1894     fast_64bit
1895     fast_clz
1896     fast_cmov
1897     local_aligned
1898     simd_align_16
1899     simd_align_32
1900     simd_align_64
1901 "
1902
1903 BUILTIN_LIST="
1904     atomic_cas_ptr
1905     machine_rw_barrier
1906     MemoryBarrier
1907     mm_empty
1908     rdtsc
1909     sem_timedwait
1910     sync_val_compare_and_swap
1911 "
1912 HAVE_LIST_CMDLINE="
1913     inline_asm
1914     symver
1915     x86asm
1916 "
1917
1918 HAVE_LIST_PUB="
1919     bigendian
1920     fast_unaligned
1921 "
1922
1923 HEADERS_LIST="
1924     arpa_inet_h
1925     asm_types_h
1926     cdio_paranoia_h
1927     cdio_paranoia_paranoia_h
1928     cuda_h
1929     dispatch_dispatch_h
1930     dev_bktr_ioctl_bt848_h
1931     dev_bktr_ioctl_meteor_h
1932     dev_ic_bt8xx_h
1933     dev_video_bktr_ioctl_bt848_h
1934     dev_video_meteor_ioctl_meteor_h
1935     direct_h
1936     dirent_h
1937     dxgidebug_h
1938     dxva_h
1939     ES2_gl_h
1940     gsm_h
1941     io_h
1942     machine_ioctl_bt848_h
1943     machine_ioctl_meteor_h
1944     malloc_h
1945     opencv2_core_core_c_h
1946     OpenGL_gl3_h
1947     poll_h
1948     sys_param_h
1949     sys_resource_h
1950     sys_select_h
1951     sys_soundcard_h
1952     sys_time_h
1953     sys_un_h
1954     sys_videoio_h
1955     termios_h
1956     udplite_h
1957     unistd_h
1958     valgrind_valgrind_h
1959     windows_h
1960     winsock2_h
1961 "
1962
1963 INTRINSICS_LIST="
1964     intrinsics_neon
1965 "
1966
1967 COMPLEX_FUNCS="
1968     cabs
1969     cexp
1970 "
1971
1972 MATH_FUNCS="
1973     atanf
1974     atan2f
1975     cbrt
1976     cbrtf
1977     copysign
1978     cosf
1979     erf
1980     exp2
1981     exp2f
1982     expf
1983     hypot
1984     isfinite
1985     isinf
1986     isnan
1987     ldexpf
1988     llrint
1989     llrintf
1990     log2
1991     log2f
1992     log10f
1993     lrint
1994     lrintf
1995     powf
1996     rint
1997     round
1998     roundf
1999     sinf
2000     trunc
2001     truncf
2002 "
2003
2004 SYSTEM_FEATURES="
2005     dos_paths
2006     libc_msvcrt
2007     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2008     section_data_rel_ro
2009     threads
2010     uwp
2011     winrt
2012 "
2013
2014 SYSTEM_FUNCS="
2015     access
2016     aligned_malloc
2017     arc4random
2018     clock_gettime
2019     closesocket
2020     CommandLineToArgvW
2021     fcntl
2022     getaddrinfo
2023     gethrtime
2024     getopt
2025     GetProcessAffinityMask
2026     GetProcessMemoryInfo
2027     GetProcessTimes
2028     getrusage
2029     GetSystemTimeAsFileTime
2030     gettimeofday
2031     glob
2032     glXGetProcAddress
2033     gmtime_r
2034     inet_aton
2035     isatty
2036     kbhit
2037     localtime_r
2038     lstat
2039     lzo1x_999_compress
2040     mach_absolute_time
2041     MapViewOfFile
2042     memalign
2043     mkstemp
2044     mmap
2045     mprotect
2046     nanosleep
2047     PeekNamedPipe
2048     posix_memalign
2049     pthread_cancel
2050     sched_getaffinity
2051     SecItemImport
2052     SetConsoleTextAttribute
2053     SetConsoleCtrlHandler
2054     setmode
2055     setrlimit
2056     Sleep
2057     strerror_r
2058     sysconf
2059     sysctl
2060     usleep
2061     UTGetOSTypeFromString
2062     VirtualAlloc
2063     wglGetProcAddress
2064 "
2065
2066 SYSTEM_LIBRARIES="
2067     vaapi_drm
2068     vaapi_x11
2069     vdpau_x11
2070     wincrypt
2071 "
2072
2073 TOOLCHAIN_FEATURES="
2074     as_arch_directive
2075     as_fpu_directive
2076     as_func
2077     as_object_arch
2078     asm_mod_q
2079     blocks_extension
2080     ebp_available
2081     ebx_available
2082     gnu_as
2083     gnu_windres
2084     ibm_asm
2085     inline_asm_direct_symbol_refs
2086     inline_asm_labels
2087     inline_asm_nonlocal_labels
2088     pragma_deprecated
2089     rsync_contimeout
2090     symver_asm_label
2091     symver_gnu_asm
2092     vfp_args
2093     xform_asm
2094     xmm_clobbers
2095 "
2096
2097 TYPES_LIST="
2098     kCMVideoCodecType_HEVC
2099     socklen_t
2100     struct_addrinfo
2101     struct_group_source_req
2102     struct_ip_mreq_source
2103     struct_ipv6_mreq
2104     struct_msghdr_msg_flags
2105     struct_pollfd
2106     struct_rusage_ru_maxrss
2107     struct_sctp_event_subscribe
2108     struct_sockaddr_in6
2109     struct_sockaddr_sa_len
2110     struct_sockaddr_storage
2111     struct_stat_st_mtim_tv_nsec
2112     struct_v4l2_frmivalenum_discrete
2113 "
2114
2115 HAVE_LIST="
2116     $ARCH_EXT_LIST
2117     $(add_suffix _external $ARCH_EXT_LIST)
2118     $(add_suffix _inline   $ARCH_EXT_LIST)
2119     $ARCH_FEATURES
2120     $BUILTIN_LIST
2121     $COMPLEX_FUNCS
2122     $HAVE_LIST_CMDLINE
2123     $HAVE_LIST_PUB
2124     $HEADERS_LIST
2125     $INTRINSICS_LIST
2126     $MATH_FUNCS
2127     $SYSTEM_FEATURES
2128     $SYSTEM_FUNCS
2129     $SYSTEM_LIBRARIES
2130     $THREADS_LIST
2131     $TOOLCHAIN_FEATURES
2132     $TYPES_LIST
2133     makeinfo
2134     makeinfo_html
2135     opencl_d3d11
2136     opencl_drm_arm
2137     opencl_dxva2
2138     opencl_vaapi_beignet
2139     opencl_vaapi_intel_media
2140     perl
2141     pod2man
2142     texi2html
2143 "
2144
2145 # options emitted with CONFIG_ prefix but not available on the command line
2146 CONFIG_EXTRA="
2147     aandcttables
2148     ac3dsp
2149     adts_header
2150     audio_frame_queue
2151     audiodsp
2152     blockdsp
2153     bswapdsp
2154     cabac
2155     cbs
2156     cbs_h264
2157     cbs_h265
2158     cbs_mpeg2
2159     dirac_parse
2160     dvprofile
2161     exif
2162     faandct
2163     faanidct
2164     fdctdsp
2165     flacdsp
2166     fmtconvert
2167     frame_thread_encoder
2168     g722dsp
2169     golomb
2170     gplv3
2171     h263dsp
2172     h264chroma
2173     h264dsp
2174     h264parse
2175     h264pred
2176     h264qpel
2177     hevcparse
2178     hpeldsp
2179     huffman
2180     huffyuvdsp
2181     huffyuvencdsp
2182     idctdsp
2183     iirfilter
2184     mdct15
2185     intrax8
2186     iso_media
2187     ividsp
2188     jpegtables
2189     lgplv3
2190     libx262
2191     llauddsp
2192     llviddsp
2193     llvidencdsp
2194     lpc
2195     lzf
2196     me_cmp
2197     mpeg_er
2198     mpegaudio
2199     mpegaudiodsp
2200     mpegaudioheader
2201     mpegvideo
2202     mpegvideoenc
2203     mss34dsp
2204     pixblockdsp
2205     qpeldsp
2206     qsv
2207     qsvdec
2208     qsvenc
2209     qsvvpp
2210     rangecoder
2211     riffdec
2212     riffenc
2213     rtpdec
2214     rtpenc_chain
2215     rv34dsp
2216     sinewin
2217     snappy
2218     srtp
2219     startcode
2220     texturedsp
2221     texturedspenc
2222     tpeldsp
2223     vaapi_1
2224     vaapi_encode
2225     vc1dsp
2226     videodsp
2227     vp3dsp
2228     vp56dsp
2229     vp8dsp
2230     wma_freqs
2231     wmv2dsp
2232 "
2233
2234 CMDLINE_SELECT="
2235     $ARCH_EXT_LIST
2236     $CONFIG_LIST
2237     $HAVE_LIST_CMDLINE
2238     $THREADS_LIST
2239     asm
2240     cross_compile
2241     debug
2242     extra_warnings
2243     logging
2244     lto
2245     optimizations
2246     rpath
2247     stripping
2248 "
2249
2250 PATHS_LIST="
2251     bindir
2252     datadir
2253     docdir
2254     incdir
2255     libdir
2256     mandir
2257     pkgconfigdir
2258     prefix
2259     shlibdir
2260     install_name_dir
2261 "
2262
2263 CMDLINE_SET="
2264     $PATHS_LIST
2265     ar
2266     arch
2267     as
2268     assert_level
2269     build_suffix
2270     cc
2271     objcc
2272     cpu
2273     cross_prefix
2274     custom_allocator
2275     cxx
2276     dep_cc
2277     doxygen
2278     env
2279     extra_version
2280     gas
2281     host_cc
2282     host_cflags
2283     host_extralibs
2284     host_ld
2285     host_ldflags
2286     host_os
2287     ignore_tests
2288     install
2289     ld
2290     ln_s
2291     logfile
2292     malloc_prefix
2293     nm
2294     optflags
2295     nvccflags
2296     pkg_config
2297     pkg_config_flags
2298     progs_suffix
2299     random_seed
2300     ranlib
2301     samples
2302     strip
2303     sws_max_filter_size
2304     sysinclude
2305     sysroot
2306     target_exec
2307     target_os
2308     target_path
2309     target_samples
2310     tempprefix
2311     toolchain
2312     valgrind
2313     x86asmexe
2314 "
2315
2316 CMDLINE_APPEND="
2317     extra_cflags
2318     extra_cxxflags
2319     extra_objcflags
2320     host_cppflags
2321 "
2322
2323 # code dependency declarations
2324
2325 # architecture extensions
2326
2327 armv5te_deps="arm"
2328 armv6_deps="arm"
2329 armv6t2_deps="arm"
2330 armv8_deps="aarch64"
2331 neon_deps_any="aarch64 arm"
2332 intrinsics_neon_deps="neon"
2333 vfp_deps_any="aarch64 arm"
2334 vfpv3_deps="vfp"
2335 setend_deps="arm"
2336
2337 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2338
2339 altivec_deps="ppc"
2340 dcbzl_deps="ppc"
2341 ldbrx_deps="ppc"
2342 ppc4xx_deps="ppc"
2343 vsx_deps="altivec"
2344 power8_deps="vsx"
2345
2346 loongson2_deps="mips"
2347 loongson3_deps="mips"
2348 mips32r2_deps="mips"
2349 mips32r5_deps="mips"
2350 mips32r6_deps="mips"
2351 mips64r2_deps="mips"
2352 mips64r6_deps="mips"
2353 mipsfpu_deps="mips"
2354 mipsdsp_deps="mips"
2355 mipsdspr2_deps="mips"
2356 mmi_deps="mips"
2357 msa_deps="mipsfpu"
2358
2359 cpunop_deps="i686"
2360 x86_64_select="i686"
2361 x86_64_suggest="fast_cmov"
2362
2363 amd3dnow_deps="mmx"
2364 amd3dnowext_deps="amd3dnow"
2365 i686_deps="x86"
2366 mmx_deps="x86"
2367 mmxext_deps="mmx"
2368 sse_deps="mmxext"
2369 sse2_deps="sse"
2370 sse3_deps="sse2"
2371 ssse3_deps="sse3"
2372 sse4_deps="ssse3"
2373 sse42_deps="sse4"
2374 aesni_deps="sse42"
2375 avx_deps="sse42"
2376 xop_deps="avx"
2377 fma3_deps="avx"
2378 fma4_deps="avx"
2379 avx2_deps="avx"
2380 avx512_deps="avx2"
2381
2382 mmx_external_deps="x86asm"
2383 mmx_inline_deps="inline_asm x86"
2384 mmx_suggest="mmx_external mmx_inline"
2385
2386 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2387     eval dep=\$${ext}_deps
2388     eval ${ext}_external_deps='"${dep}_external"'
2389     eval ${ext}_inline_deps='"${dep}_inline"'
2390     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2391 done
2392
2393 aligned_stack_if_any="aarch64 ppc x86"
2394 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2395 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2396 fast_unaligned_if_any="aarch64 ppc x86"
2397 simd_align_16_if_any="altivec neon sse"
2398 simd_align_32_if_any="avx"
2399 simd_align_64_if_any="avx512"
2400
2401 # system capabilities
2402 symver_if_any="symver_asm_label symver_gnu_asm"
2403 valgrind_backtrace_conflict="optimizations"
2404 valgrind_backtrace_deps="valgrind_valgrind_h"
2405
2406 # threading support
2407 atomics_gcc_if="sync_val_compare_and_swap"
2408 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2409 atomics_win32_if="MemoryBarrier"
2410 atomics_native_if_any="$ATOMICS_LIST"
2411 w32threads_deps="atomics_native"
2412 threads_if_any="$THREADS_LIST"
2413
2414 # subsystems
2415 cbs_h264_select="cbs golomb"
2416 cbs_h265_select="cbs golomb"
2417 cbs_mpeg2_select="cbs"
2418 dct_select="rdft"
2419 dirac_parse_select="golomb"
2420 error_resilience_select="me_cmp"
2421 faandct_deps="faan"
2422 faandct_select="fdctdsp"
2423 faanidct_deps="faan"
2424 faanidct_select="idctdsp"
2425 h264dsp_select="startcode"
2426 hevcparse_select="golomb"
2427 frame_thread_encoder_deps="encoders threads"
2428 intrax8_select="blockdsp idctdsp"
2429 mdct_select="fft"
2430 mdct15_select="fft"
2431 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2432 mpeg_er_select="error_resilience"
2433 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2434 mpegaudiodsp_select="dct"
2435 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2436 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2437 vc1dsp_select="h264chroma qpeldsp startcode"
2438 rdft_select="fft"
2439
2440 # decoders / encoders
2441 aac_decoder_select="adts_header mdct15 mdct sinewin"
2442 aac_fixed_decoder_select="mdct sinewin"
2443 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2444 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2445 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2446 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2447 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2448 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2449 adpcm_g722_decoder_select="g722dsp"
2450 adpcm_g722_encoder_select="g722dsp"
2451 aic_decoder_select="golomb idctdsp"
2452 alac_encoder_select="lpc"
2453 als_decoder_select="bswapdsp"
2454 amrnb_decoder_select="lsp"
2455 amrwb_decoder_select="lsp"
2456 amv_decoder_select="sp5x_decoder exif"
2457 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2458 ape_decoder_select="bswapdsp llauddsp"
2459 apng_decoder_deps="zlib"
2460 apng_encoder_deps="zlib"
2461 apng_encoder_select="llvidencdsp"
2462 aptx_decoder_select="audio_frame_queue"
2463 aptx_encoder_select="audio_frame_queue"
2464 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2465 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2466 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2467 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2468 atrac1_decoder_select="mdct sinewin"
2469 atrac3_decoder_select="mdct"
2470 atrac3p_decoder_select="mdct sinewin"
2471 avrn_decoder_select="exif jpegtables"
2472 bink_decoder_select="blockdsp hpeldsp"
2473 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2474 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2475 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2476 clearvideo_decoder_select="idctdsp"
2477 cllc_decoder_select="bswapdsp"
2478 comfortnoise_encoder_select="lpc"
2479 cook_decoder_select="audiodsp mdct sinewin"
2480 cscd_decoder_select="lzo"
2481 cscd_decoder_suggest="zlib"
2482 dca_decoder_select="mdct"
2483 dds_decoder_select="texturedsp"
2484 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2485 dnxhd_decoder_select="blockdsp idctdsp"
2486 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2487 dolby_e_decoder_select="mdct"
2488 dvvideo_decoder_select="dvprofile idctdsp"
2489 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2490 dxa_decoder_deps="zlib"
2491 dxv_decoder_select="lzf texturedsp"
2492 eac3_decoder_select="ac3_decoder"
2493 eac3_encoder_select="ac3_encoder"
2494 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2495 eatgq_decoder_select="aandcttables"
2496 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2497 exr_decoder_deps="zlib"
2498 ffv1_decoder_select="rangecoder"
2499 ffv1_encoder_select="rangecoder"
2500 ffvhuff_decoder_select="huffyuv_decoder"
2501 ffvhuff_encoder_select="huffyuv_encoder"
2502 fic_decoder_select="golomb"
2503 flac_decoder_select="flacdsp"
2504 flac_encoder_select="bswapdsp flacdsp lpc"
2505 flashsv2_decoder_deps="zlib"
2506 flashsv2_encoder_deps="zlib"
2507 flashsv_decoder_deps="zlib"
2508 flashsv_encoder_deps="zlib"
2509 flv_decoder_select="h263_decoder"
2510 flv_encoder_select="h263_encoder"
2511 fourxm_decoder_select="blockdsp bswapdsp"
2512 fraps_decoder_select="bswapdsp huffman"
2513 g2m_decoder_deps="zlib"
2514 g2m_decoder_select="blockdsp idctdsp jpegtables"
2515 g729_decoder_select="audiodsp"
2516 h261_decoder_select="mpegvideo"
2517 h261_encoder_select="aandcttables mpegvideoenc"
2518 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2519 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2520 h263i_decoder_select="h263_decoder"
2521 h263p_decoder_select="h263_decoder"
2522 h263p_encoder_select="h263_encoder"
2523 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2524 h264_decoder_suggest="error_resilience"
2525 hap_decoder_select="snappy texturedsp"
2526 hap_encoder_deps="libsnappy"
2527 hap_encoder_select="texturedspenc"
2528 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2529 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2530 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2531 iac_decoder_select="imc_decoder"
2532 imc_decoder_select="bswapdsp fft mdct sinewin"
2533 indeo3_decoder_select="hpeldsp"
2534 indeo4_decoder_select="ividsp"
2535 indeo5_decoder_select="ividsp"
2536 interplay_video_decoder_select="hpeldsp"
2537 jpegls_decoder_select="mjpeg_decoder"
2538 jv_decoder_select="blockdsp"
2539 lagarith_decoder_select="llviddsp"
2540 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2541 magicyuv_decoder_select="llviddsp"
2542 magicyuv_encoder_select="llvidencdsp"
2543 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2544 metasound_decoder_select="lsp mdct sinewin"
2545 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2546 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2547 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2548 mjpegb_decoder_select="mjpeg_decoder"
2549 mlp_decoder_select="mlp_parser"
2550 mlp_encoder_select="lpc"
2551 motionpixels_decoder_select="bswapdsp"
2552 mp1_decoder_select="mpegaudio"
2553 mp1float_decoder_select="mpegaudio"
2554 mp2_decoder_select="mpegaudio"
2555 mp2float_decoder_select="mpegaudio"
2556 mp3_decoder_select="mpegaudio"
2557 mp3adu_decoder_select="mpegaudio"
2558 mp3adufloat_decoder_select="mpegaudio"
2559 mp3float_decoder_select="mpegaudio"
2560 mp3on4_decoder_select="mpegaudio"
2561 mp3on4float_decoder_select="mpegaudio"
2562 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2563 mpc8_decoder_select="mpegaudiodsp"
2564 mpegvideo_decoder_select="mpegvideo"
2565 mpeg1video_decoder_select="mpegvideo"
2566 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2567 mpeg2video_decoder_select="mpegvideo"
2568 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2569 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2570 mpeg4_encoder_select="h263_encoder"
2571 msa1_decoder_select="mss34dsp"
2572 mscc_decoder_deps="zlib"
2573 msmpeg4v1_decoder_select="h263_decoder"
2574 msmpeg4v2_decoder_select="h263_decoder"
2575 msmpeg4v2_encoder_select="h263_encoder"
2576 msmpeg4v3_decoder_select="h263_decoder"
2577 msmpeg4v3_encoder_select="h263_encoder"
2578 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2579 mts2_decoder_select="mss34dsp"
2580 mxpeg_decoder_select="mjpeg_decoder"
2581 nellymoser_decoder_select="mdct sinewin"
2582 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2583 nuv_decoder_select="idctdsp lzo"
2584 on2avc_decoder_select="mdct"
2585 opus_decoder_deps="swresample"
2586 opus_decoder_select="mdct15"
2587 opus_encoder_select="audio_frame_queue mdct15"
2588 png_decoder_deps="zlib"
2589 png_encoder_deps="zlib"
2590 png_encoder_select="llvidencdsp"
2591 prores_decoder_select="blockdsp idctdsp"
2592 prores_encoder_select="fdctdsp"
2593 qcelp_decoder_select="lsp"
2594 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2595 ra_144_decoder_select="audiodsp"
2596 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2597 ralf_decoder_select="golomb"
2598 rawvideo_decoder_select="bswapdsp"
2599 rscc_decoder_deps="zlib"
2600 rtjpeg_decoder_select="me_cmp"
2601 rv10_decoder_select="h263_decoder"
2602 rv10_encoder_select="h263_encoder"
2603 rv20_decoder_select="h263_decoder"
2604 rv20_encoder_select="h263_encoder"
2605 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2606 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2607 screenpresso_decoder_deps="zlib"
2608 shorten_decoder_select="bswapdsp"
2609 sipr_decoder_select="lsp"
2610 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2611 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2612 sonic_decoder_select="golomb rangecoder"
2613 sonic_encoder_select="golomb rangecoder"
2614 sonic_ls_encoder_select="golomb rangecoder"
2615 sp5x_decoder_select="mjpeg_decoder"
2616 srgc_decoder_deps="zlib"
2617 svq1_decoder_select="hpeldsp"
2618 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2619 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2620 svq3_decoder_suggest="zlib"
2621 tak_decoder_select="audiodsp"
2622 tdsc_decoder_deps="zlib"
2623 tdsc_decoder_select="mjpeg_decoder"
2624 theora_decoder_select="vp3_decoder"
2625 thp_decoder_select="mjpeg_decoder"
2626 tiff_decoder_suggest="zlib lzma"
2627 tiff_encoder_suggest="zlib"
2628 truehd_decoder_select="mlp_parser"
2629 truehd_encoder_select="lpc"
2630 truemotion2_decoder_select="bswapdsp"
2631 truespeech_decoder_select="bswapdsp"
2632 tscc_decoder_deps="zlib"
2633 twinvq_decoder_select="mdct lsp sinewin"
2634 txd_decoder_select="texturedsp"
2635 utvideo_decoder_select="bswapdsp llviddsp"
2636 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2637 vble_decoder_select="llviddsp"
2638 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2639 vc1image_decoder_select="vc1_decoder"
2640 vorbis_decoder_select="mdct"
2641 vorbis_encoder_select="mdct"
2642 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2643 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2644 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2645 vp6a_decoder_select="vp6_decoder"
2646 vp6f_decoder_select="vp6_decoder"
2647 vp7_decoder_select="h264pred videodsp vp8dsp"
2648 vp8_decoder_select="h264pred videodsp vp8dsp"
2649 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2650 webp_decoder_select="vp8_decoder exif"
2651 wmalossless_decoder_select="llauddsp"
2652 wmapro_decoder_select="mdct sinewin wma_freqs"
2653 wmav1_decoder_select="mdct sinewin wma_freqs"
2654 wmav1_encoder_select="mdct sinewin wma_freqs"
2655 wmav2_decoder_select="mdct sinewin wma_freqs"
2656 wmav2_encoder_select="mdct sinewin wma_freqs"
2657 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2658 wmv1_decoder_select="h263_decoder"
2659 wmv1_encoder_select="h263_encoder"
2660 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2661 wmv2_encoder_select="h263_encoder wmv2dsp"
2662 wmv3_decoder_select="vc1_decoder"
2663 wmv3image_decoder_select="wmv3_decoder"
2664 xma1_decoder_select="wmapro_decoder"
2665 xma2_decoder_select="wmapro_decoder"
2666 zerocodec_decoder_deps="zlib"
2667 zlib_decoder_deps="zlib"
2668 zlib_encoder_deps="zlib"
2669 zmbv_decoder_deps="zlib"
2670 zmbv_encoder_deps="zlib"
2671
2672 # hardware accelerators
2673 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2674 cuda_deps_any="libdl LoadLibrary"
2675 cuvid_deps="cuda"
2676 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2677 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2678 nvdec_deps="cuda"
2679 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2680 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2681 xvmc_deps="X11_extensions_XvMClib_h"
2682
2683 h263_vaapi_hwaccel_deps="vaapi"
2684 h263_vaapi_hwaccel_select="h263_decoder"
2685 h263_videotoolbox_hwaccel_deps="videotoolbox"
2686 h263_videotoolbox_hwaccel_select="h263_decoder"
2687 h264_d3d11va_hwaccel_deps="d3d11va"
2688 h264_d3d11va_hwaccel_select="h264_decoder"
2689 h264_d3d11va2_hwaccel_deps="d3d11va"
2690 h264_d3d11va2_hwaccel_select="h264_decoder"
2691 h264_dxva2_hwaccel_deps="dxva2"
2692 h264_dxva2_hwaccel_select="h264_decoder"
2693 h264_nvdec_hwaccel_deps="nvdec"
2694 h264_nvdec_hwaccel_select="h264_decoder"
2695 h264_vaapi_hwaccel_deps="vaapi"
2696 h264_vaapi_hwaccel_select="h264_decoder"
2697 h264_vdpau_hwaccel_deps="vdpau"
2698 h264_vdpau_hwaccel_select="h264_decoder"
2699 h264_videotoolbox_hwaccel_deps="videotoolbox"
2700 h264_videotoolbox_hwaccel_select="h264_decoder"
2701 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2702 hevc_d3d11va_hwaccel_select="hevc_decoder"
2703 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2704 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2705 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2706 hevc_dxva2_hwaccel_select="hevc_decoder"
2707 hevc_nvdec_hwaccel_deps="nvdec"
2708 hevc_nvdec_hwaccel_select="hevc_decoder"
2709 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2710 hevc_vaapi_hwaccel_select="hevc_decoder"
2711 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2712 hevc_vdpau_hwaccel_select="hevc_decoder"
2713 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2714 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2715 mpeg_xvmc_hwaccel_deps="xvmc"
2716 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2717 mpeg1_nvdec_hwaccel_deps="nvdec"
2718 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2719 mpeg1_vdpau_hwaccel_deps="vdpau"
2720 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2721 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2722 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2723 mpeg1_xvmc_hwaccel_deps="xvmc"
2724 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2725 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2726 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2728 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_dxva2_hwaccel_deps="dxva2"
2730 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_nvdec_hwaccel_deps="nvdec"
2732 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2733 mpeg2_vaapi_hwaccel_deps="vaapi"
2734 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2735 mpeg2_vdpau_hwaccel_deps="vdpau"
2736 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2737 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2738 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2739 mpeg2_xvmc_hwaccel_deps="xvmc"
2740 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2741 mpeg4_nvdec_hwaccel_deps="nvdec"
2742 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2743 mpeg4_vaapi_hwaccel_deps="vaapi"
2744 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2745 mpeg4_vdpau_hwaccel_deps="vdpau"
2746 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2747 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2748 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2749 vc1_d3d11va_hwaccel_deps="d3d11va"
2750 vc1_d3d11va_hwaccel_select="vc1_decoder"
2751 vc1_d3d11va2_hwaccel_deps="d3d11va"
2752 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2753 vc1_dxva2_hwaccel_deps="dxva2"
2754 vc1_dxva2_hwaccel_select="vc1_decoder"
2755 vc1_nvdec_hwaccel_deps="nvdec"
2756 vc1_nvdec_hwaccel_select="vc1_decoder"
2757 vc1_vaapi_hwaccel_deps="vaapi"
2758 vc1_vaapi_hwaccel_select="vc1_decoder"
2759 vc1_vdpau_hwaccel_deps="vdpau"
2760 vc1_vdpau_hwaccel_select="vc1_decoder"
2761 vp8_nvdec_hwaccel_deps="nvdec"
2762 vp8_nvdec_hwaccel_select="vp8_decoder"
2763 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2764 vp8_vaapi_hwaccel_select="vp8_decoder"
2765 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2766 vp9_d3d11va_hwaccel_select="vp9_decoder"
2767 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2768 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2769 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2770 vp9_dxva2_hwaccel_select="vp9_decoder"
2771 vp9_nvdec_hwaccel_deps="nvdec"
2772 vp9_nvdec_hwaccel_select="vp9_decoder"
2773 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2774 vp9_vaapi_hwaccel_select="vp9_decoder"
2775 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2776 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2777 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2778 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2779 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2780 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2781
2782 # hardware-accelerated codecs
2783 omx_deps="libdl pthreads"
2784 omx_rpi_select="omx"
2785 qsv_deps="libmfx"
2786 qsvdec_select="qsv"
2787 qsvenc_select="qsv"
2788 qsvvpp_select="qsv"
2789 vaapi_encode_deps="vaapi"
2790 v4l2_m2m_deps_any="linux_videodev2_h"
2791
2792 hwupload_cuda_filter_deps="cuda"
2793 scale_npp_filter_deps="cuda libnpp"
2794 scale_cuda_filter_deps="cuda_sdk"
2795 thumbnail_cuda_filter_deps="cuda_sdk"
2796
2797 amf_deps_any="libdl LoadLibrary"
2798 nvenc_deps="cuda"
2799 nvenc_deps_any="libdl LoadLibrary"
2800 nvenc_encoder_deps="nvenc"
2801
2802 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2803 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2804 h264_amf_encoder_deps="amf"
2805 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2806 h264_cuvid_decoder_deps="cuvid"
2807 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2808 h264_mediacodec_decoder_deps="mediacodec"
2809 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2810 h264_mmal_decoder_deps="mmal"
2811 h264_nvenc_encoder_deps="nvenc"
2812 h264_omx_encoder_deps="omx"
2813 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2814 h264_qsv_encoder_select="qsvenc"
2815 h264_rkmpp_decoder_deps="rkmpp"
2816 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2817 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2818 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2819 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2820 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2821 hevc_amf_encoder_deps="amf"
2822 hevc_cuvid_decoder_deps="cuvid"
2823 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2824 hevc_mediacodec_decoder_deps="mediacodec"
2825 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2826 hevc_nvenc_encoder_deps="nvenc"
2827 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2828 hevc_qsv_encoder_select="hevcparse qsvenc"
2829 hevc_rkmpp_decoder_deps="rkmpp"
2830 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2831 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2832 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2833 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2834 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2835 mjpeg_cuvid_decoder_deps="cuvid"
2836 mjpeg_qsv_encoder_deps="libmfx"
2837 mjpeg_qsv_encoder_select="qsvenc"
2838 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2839 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2840 mpeg1_cuvid_decoder_deps="cuvid"
2841 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2842 mpeg2_crystalhd_decoder_select="crystalhd"
2843 mpeg2_cuvid_decoder_deps="cuvid"
2844 mpeg2_mmal_decoder_deps="mmal"
2845 mpeg2_mediacodec_decoder_deps="mediacodec"
2846 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2847 mpeg2_qsv_encoder_select="qsvenc"
2848 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2849 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2850 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2851 mpeg4_crystalhd_decoder_select="crystalhd"
2852 mpeg4_cuvid_decoder_deps="cuvid"
2853 mpeg4_mediacodec_decoder_deps="mediacodec"
2854 mpeg4_mmal_decoder_deps="mmal"
2855 mpeg4_omx_encoder_deps="omx"
2856 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2857 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2858 msmpeg4_crystalhd_decoder_select="crystalhd"
2859 nvenc_h264_encoder_select="h264_nvenc_encoder"
2860 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2861 vc1_crystalhd_decoder_select="crystalhd"
2862 vc1_cuvid_decoder_deps="cuvid"
2863 vc1_mmal_decoder_deps="mmal"
2864 vc1_qsv_decoder_select="qsvdec vc1_parser"
2865 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2866 vp8_cuvid_decoder_deps="cuvid"
2867 vp8_mediacodec_decoder_deps="mediacodec"
2868 vp8_qsv_decoder_select="qsvdec vp8_parser"
2869 vp8_rkmpp_decoder_deps="rkmpp"
2870 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2871 vp8_vaapi_encoder_select="vaapi_encode"
2872 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2873 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2874 vp9_cuvid_decoder_deps="cuvid"
2875 vp9_mediacodec_decoder_deps="mediacodec"
2876 vp9_rkmpp_decoder_deps="rkmpp"
2877 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2878 vp9_vaapi_encoder_select="vaapi_encode"
2879 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2880 wmv3_crystalhd_decoder_select="crystalhd"
2881
2882 # parsers
2883 aac_parser_select="adts_header"
2884 h264_parser_select="golomb h264dsp h264parse"
2885 hevc_parser_select="hevcparse"
2886 mpegaudio_parser_select="mpegaudioheader"
2887 mpegvideo_parser_select="mpegvideo"
2888 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2889 vc1_parser_select="vc1dsp"
2890
2891 # bitstream_filters
2892 aac_adtstoasc_bsf_select="adts_header"
2893 h264_metadata_bsf_select="cbs_h264"
2894 h264_redundant_pps_bsf_select="cbs_h264"
2895 hevc_metadata_bsf_select="cbs_h265"
2896 mjpeg2jpeg_bsf_select="jpegtables"
2897 mpeg2_metadata_bsf_select="cbs_mpeg2"
2898 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2899
2900 # external libraries
2901 aac_at_decoder_deps="audiotoolbox"
2902 aac_at_decoder_select="aac_adtstoasc_bsf"
2903 ac3_at_decoder_deps="audiotoolbox"
2904 ac3_at_decoder_select="ac3_parser"
2905 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2906 alac_at_decoder_deps="audiotoolbox"
2907 amr_nb_at_decoder_deps="audiotoolbox"
2908 avisynth_deps_any="libdl LoadLibrary"
2909 avisynth_demuxer_deps="avisynth"
2910 avisynth_demuxer_select="riffdec"
2911 eac3_at_decoder_deps="audiotoolbox"
2912 eac3_at_decoder_select="ac3_parser"
2913 gsm_ms_at_decoder_deps="audiotoolbox"
2914 ilbc_at_decoder_deps="audiotoolbox"
2915 mp1_at_decoder_deps="audiotoolbox"
2916 mp2_at_decoder_deps="audiotoolbox"
2917 mp3_at_decoder_deps="audiotoolbox"
2918 mp1_at_decoder_select="mpegaudioheader"
2919 mp2_at_decoder_select="mpegaudioheader"
2920 mp3_at_decoder_select="mpegaudioheader"
2921 pcm_alaw_at_decoder_deps="audiotoolbox"
2922 pcm_mulaw_at_decoder_deps="audiotoolbox"
2923 qdmc_at_decoder_deps="audiotoolbox"
2924 qdm2_at_decoder_deps="audiotoolbox"
2925 aac_at_encoder_deps="audiotoolbox"
2926 aac_at_encoder_select="audio_frame_queue"
2927 alac_at_encoder_deps="audiotoolbox"
2928 alac_at_encoder_select="audio_frame_queue"
2929 ilbc_at_encoder_deps="audiotoolbox"
2930 ilbc_at_encoder_select="audio_frame_queue"
2931 pcm_alaw_at_encoder_deps="audiotoolbox"
2932 pcm_alaw_at_encoder_select="audio_frame_queue"
2933 pcm_mulaw_at_encoder_deps="audiotoolbox"
2934 pcm_mulaw_at_encoder_select="audio_frame_queue"
2935 chromaprint_muxer_deps="chromaprint"
2936 h264_videotoolbox_encoder_deps="pthreads"
2937 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2938 hevc_videotoolbox_encoder_deps="pthreads"
2939 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2940 libcelt_decoder_deps="libcelt"
2941 libfdk_aac_decoder_deps="libfdk_aac"
2942 libfdk_aac_encoder_deps="libfdk_aac"
2943 libfdk_aac_encoder_select="audio_frame_queue"
2944 libgme_demuxer_deps="libgme"
2945 libgsm_decoder_deps="libgsm"
2946 libgsm_encoder_deps="libgsm"
2947 libgsm_ms_decoder_deps="libgsm"
2948 libgsm_ms_encoder_deps="libgsm"
2949 libilbc_decoder_deps="libilbc"
2950 libilbc_encoder_deps="libilbc"
2951 libkvazaar_encoder_deps="libkvazaar"
2952 libmodplug_demuxer_deps="libmodplug"
2953 libmp3lame_encoder_deps="libmp3lame"
2954 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2955 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2956 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2957 libopencore_amrnb_encoder_select="audio_frame_queue"
2958 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2959 libopenh264_decoder_deps="libopenh264"
2960 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2961 libopenh264_encoder_deps="libopenh264"
2962 libopenjpeg_decoder_deps="libopenjpeg"
2963 libopenjpeg_encoder_deps="libopenjpeg"
2964 libopenmpt_demuxer_deps="libopenmpt"
2965 libopus_decoder_deps="libopus"
2966 libopus_encoder_deps="libopus"
2967 libopus_encoder_select="audio_frame_queue"
2968 librsvg_decoder_deps="librsvg"
2969 libshine_encoder_deps="libshine"
2970 libshine_encoder_select="audio_frame_queue"
2971 libspeex_decoder_deps="libspeex"
2972 libspeex_encoder_deps="libspeex"
2973 libspeex_encoder_select="audio_frame_queue"
2974 libtheora_encoder_deps="libtheora"
2975 libtwolame_encoder_deps="libtwolame"
2976 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2977 libvorbis_decoder_deps="libvorbis"
2978 libvorbis_encoder_deps="libvorbis libvorbisenc"
2979 libvorbis_encoder_select="audio_frame_queue"
2980 libvpx_vp8_decoder_deps="libvpx"
2981 libvpx_vp8_encoder_deps="libvpx"
2982 libvpx_vp9_decoder_deps="libvpx"
2983 libvpx_vp9_encoder_deps="libvpx"
2984 libwavpack_encoder_deps="libwavpack"
2985 libwavpack_encoder_select="audio_frame_queue"
2986 libwebp_encoder_deps="libwebp"
2987 libwebp_anim_encoder_deps="libwebp"
2988 libx262_encoder_deps="libx262"
2989 libx264_encoder_deps="libx264"
2990 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2991 libx264rgb_encoder_select="libx264_encoder"
2992 libx265_encoder_deps="libx265"
2993 libxavs_encoder_deps="libxavs"
2994 libxvid_encoder_deps="libxvid"
2995 libzvbi_teletext_decoder_deps="libzvbi"
2996 videotoolbox_suggest="coreservices"
2997 videotoolbox_deps="corefoundation coremedia corevideo"
2998 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2999
3000 # demuxers / muxers
3001 ac3_demuxer_select="ac3_parser"
3002 aiff_muxer_select="iso_media"
3003 asf_demuxer_select="riffdec"
3004 asf_o_demuxer_select="riffdec"
3005 asf_muxer_select="riffenc"
3006 asf_stream_muxer_select="asf_muxer"
3007 avi_demuxer_select="iso_media riffdec exif"
3008 avi_muxer_select="riffenc"
3009 caf_demuxer_select="iso_media riffdec"
3010 caf_muxer_select="iso_media"
3011 dash_muxer_select="mp4_muxer"
3012 dash_demuxer_deps="libxml2"
3013 dirac_demuxer_select="dirac_parser"
3014 dts_demuxer_select="dca_parser"
3015 dtshd_demuxer_select="dca_parser"
3016 dv_demuxer_select="dvprofile"
3017 dv_muxer_select="dvprofile"
3018 dxa_demuxer_select="riffdec"
3019 eac3_demuxer_select="ac3_parser"
3020 f4v_muxer_select="mov_muxer"
3021 fifo_muxer_deps="threads"
3022 flac_demuxer_select="flac_parser"
3023 hds_muxer_select="flv_muxer"
3024 hls_muxer_select="mpegts_muxer"
3025 hls_muxer_suggest="gcrypt openssl"
3026 image2_alias_pix_demuxer_select="image2_demuxer"
3027 image2_brender_pix_demuxer_select="image2_demuxer"
3028 ipod_muxer_select="mov_muxer"
3029 ismv_muxer_select="mov_muxer"
3030 matroska_audio_muxer_select="matroska_muxer"
3031 matroska_demuxer_select="iso_media riffdec"
3032 matroska_demuxer_suggest="bzlib lzo zlib"
3033 matroska_muxer_select="iso_media riffenc"
3034 mmf_muxer_select="riffenc"
3035 mov_demuxer_select="iso_media riffdec"
3036 mov_demuxer_suggest="zlib"
3037 mov_muxer_select="iso_media riffenc rtpenc_chain"
3038 mp3_demuxer_select="mpegaudio_parser"
3039 mp3_muxer_select="mpegaudioheader"
3040 mp4_muxer_select="mov_muxer"
3041 mpegts_demuxer_select="iso_media"
3042 mpegts_muxer_select="adts_muxer latm_muxer"
3043 mpegtsraw_demuxer_select="mpegts_demuxer"
3044 mxf_d10_muxer_select="mxf_muxer"
3045 mxf_opatom_muxer_select="mxf_muxer"
3046 nut_muxer_select="riffenc"
3047 nuv_demuxer_select="riffdec"
3048 oga_muxer_select="ogg_muxer"
3049 ogg_demuxer_select="dirac_parse"
3050 ogv_muxer_select="ogg_muxer"
3051 opus_muxer_select="ogg_muxer"
3052 psp_muxer_select="mov_muxer"
3053 rtp_demuxer_select="sdp_demuxer"
3054 rtp_muxer_select="golomb"
3055 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3056 rtsp_demuxer_select="http_protocol rtpdec"
3057 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3058 sap_demuxer_select="sdp_demuxer"
3059 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3060 sdp_demuxer_select="rtpdec"
3061 smoothstreaming_muxer_select="ismv_muxer"
3062 spdif_demuxer_select="adts_header"
3063 spdif_muxer_select="adts_header"
3064 spx_muxer_select="ogg_muxer"
3065 swf_demuxer_suggest="zlib"
3066 tak_demuxer_select="tak_parser"
3067 tg2_muxer_select="mov_muxer"
3068 tgp_muxer_select="mov_muxer"
3069 vobsub_demuxer_select="mpegps_demuxer"
3070 w64_demuxer_select="wav_demuxer"
3071 w64_muxer_select="wav_muxer"
3072 wav_demuxer_select="riffdec"
3073 wav_muxer_select="riffenc"
3074 webm_muxer_select="iso_media riffenc"
3075 webm_dash_manifest_demuxer_select="matroska_demuxer"
3076 wtv_demuxer_select="mpegts_demuxer riffdec"
3077 wtv_muxer_select="mpegts_muxer riffenc"
3078 xmv_demuxer_select="riffdec"
3079 xwma_demuxer_select="riffdec"
3080
3081 # indevs / outdevs
3082 alsa_indev_deps="alsa"
3083 alsa_outdev_deps="alsa"
3084 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3085 avfoundation_indev_suggest="coregraphics applicationservices"
3086 avfoundation_indev_extralibs="-framework Foundation"
3087 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3088 caca_outdev_deps="libcaca"
3089 decklink_deps_any="libdl LoadLibrary"
3090 decklink_indev_deps="decklink threads"
3091 decklink_indev_extralibs="-lstdc++"
3092 decklink_outdev_deps="decklink threads"
3093 decklink_outdev_extralibs="-lstdc++"
3094 libndi_newtek_indev_deps="libndi_newtek"
3095 libndi_newtek_indev_extralibs="-lndi"
3096 libndi_newtek_outdev_deps="libndi_newtek"
3097 libndi_newtek_outdev_extralibs="-lndi"
3098 dshow_indev_deps="IBaseFilter"
3099 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3100 fbdev_indev_deps="linux_fb_h"
3101 fbdev_outdev_deps="linux_fb_h"
3102 gdigrab_indev_deps="CreateDIBSection"
3103 gdigrab_indev_extralibs="-lgdi32"
3104 gdigrab_indev_select="bmp_decoder"
3105 iec61883_indev_deps="libiec61883"
3106 jack_indev_deps="libjack"
3107 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3108 kmsgrab_indev_deps="libdrm"
3109 lavfi_indev_deps="avfilter"
3110 libcdio_indev_deps="libcdio"
3111 libdc1394_indev_deps="libdc1394"
3112 openal_indev_deps="openal"
3113 opengl_outdev_deps="opengl"
3114 oss_indev_deps_any="sys_soundcard_h"
3115 oss_outdev_deps_any="sys_soundcard_h"
3116 pulse_indev_deps="libpulse"
3117 pulse_outdev_deps="libpulse"
3118 sdl2_outdev_deps="sdl2"
3119 sndio_indev_deps="sndio"
3120 sndio_outdev_deps="sndio"
3121 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3122 v4l2_indev_suggest="libv4l2"
3123 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3124 v4l2_outdev_suggest="libv4l2"
3125 vfwcap_indev_deps="vfw32 vfwcap_defines"
3126 xcbgrab_indev_deps="libxcb"
3127 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3128 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3129 xv_outdev_extralibs="-lXv -lX11 -lXext"
3130
3131 # protocols
3132 async_protocol_deps="threads"
3133 bluray_protocol_deps="libbluray"
3134 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3135 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3136 ffrtmpcrypt_protocol_select="tcp_protocol"
3137 ffrtmphttp_protocol_conflict="librtmp_protocol"
3138 ffrtmphttp_protocol_select="http_protocol"
3139 ftp_protocol_select="tcp_protocol"
3140 gopher_protocol_select="network"
3141 http_protocol_select="tcp_protocol"
3142 http_protocol_suggest="zlib"
3143 httpproxy_protocol_select="tcp_protocol"
3144 httpproxy_protocol_suggest="zlib"
3145 https_protocol_select="tls_protocol"
3146 https_protocol_suggest="zlib"
3147 icecast_protocol_select="http_protocol"
3148 librtmp_protocol_deps="librtmp"
3149 librtmpe_protocol_deps="librtmp"
3150 librtmps_protocol_deps="librtmp"
3151 librtmpt_protocol_deps="librtmp"
3152 librtmpte_protocol_deps="librtmp"
3153 libsmbclient_protocol_deps="libsmbclient gplv3"
3154 libssh_protocol_deps="libssh"
3155 libtls_conflict="openssl gnutls"
3156 mmsh_protocol_select="http_protocol"
3157 mmst_protocol_select="network"
3158 rtmp_protocol_conflict="librtmp_protocol"
3159 rtmp_protocol_select="tcp_protocol"
3160 rtmp_protocol_suggest="zlib"
3161 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3162 rtmpe_protocol_suggest="zlib"
3163 rtmps_protocol_conflict="librtmp_protocol"
3164 rtmps_protocol_select="tls_protocol"
3165 rtmps_protocol_suggest="zlib"
3166 rtmpt_protocol_select="ffrtmphttp_protocol"
3167 rtmpt_protocol_suggest="zlib"
3168 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3169 rtmpte_protocol_suggest="zlib"
3170 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3171 rtmpts_protocol_suggest="zlib"
3172 rtp_protocol_select="udp_protocol"
3173 schannel_conflict="openssl gnutls libtls"
3174 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3175 sctp_protocol_select="network"
3176 securetransport_conflict="openssl gnutls libtls"
3177 srtp_protocol_select="rtp_protocol srtp"
3178 tcp_protocol_select="network"
3179 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3180 tls_protocol_select="tcp_protocol"
3181 udp_protocol_select="network"
3182 udplite_protocol_select="network"
3183 unix_protocol_deps="sys_un_h"
3184 unix_protocol_select="network"
3185
3186 # filters
3187 afftfilt_filter_deps="avcodec"
3188 afftfilt_filter_select="fft"
3189 afir_filter_deps="avcodec"
3190 afir_filter_select="fft"
3191 amovie_filter_deps="avcodec avformat"
3192 aresample_filter_deps="swresample"
3193 ass_filter_deps="libass"
3194 atempo_filter_deps="avcodec"
3195 atempo_filter_select="rdft"
3196 azmq_filter_deps="libzmq"
3197 blackframe_filter_deps="gpl"
3198 boxblur_filter_deps="gpl"
3199 bs2b_filter_deps="libbs2b"
3200 colormatrix_filter_deps="gpl"
3201 convolve_filter_deps="avcodec"
3202 convolve_filter_select="fft"
3203 coreimage_filter_deps="coreimage appkit"
3204 coreimage_filter_extralibs="-framework OpenGL"
3205 coreimagesrc_filter_deps="coreimage appkit"
3206 coreimagesrc_filter_extralibs="-framework OpenGL"
3207 cover_rect_filter_deps="avcodec avformat gpl"
3208 cropdetect_filter_deps="gpl"
3209 deconvolve_filter_deps="avcodec"
3210 deconvolve_filter_select="fft"
3211 deinterlace_qsv_filter_deps="libmfx"
3212 deinterlace_vaapi_filter_deps="vaapi"
3213 delogo_filter_deps="gpl"
3214 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3215 deshake_filter_select="pixelutils"
3216 drawtext_filter_deps="libfreetype"
3217 drawtext_filter_suggest="libfontconfig libfribidi"
3218 elbg_filter_deps="avcodec"
3219 eq_filter_deps="gpl"
3220 fftfilt_filter_deps="avcodec"
3221 fftfilt_filter_select="rdft"
3222 find_rect_filter_deps="avcodec avformat gpl"
3223 firequalizer_filter_deps="avcodec"
3224 firequalizer_filter_select="rdft"
3225 flite_filter_deps="libflite"
3226 framerate_filter_select="pixelutils"
3227 frei0r_filter_deps="frei0r libdl"
3228 frei0r_src_filter_deps="frei0r libdl"
3229 fspp_filter_deps="gpl"
3230 geq_filter_deps="gpl"
3231 histeq_filter_deps="gpl"
3232 hqdn3d_filter_deps="gpl"
3233 interlace_filter_deps="gpl"
3234 kerndeint_filter_deps="gpl"
3235 ladspa_filter_deps="ladspa libdl"
3236 lv2_filter_deps="lv2"
3237 mcdeint_filter_deps="avcodec gpl"
3238 movie_filter_deps="avcodec avformat"
3239 mpdecimate_filter_deps="gpl"
3240 mpdecimate_filter_select="pixelutils"
3241 mptestsrc_filter_deps="gpl"
3242 negate_filter_deps="lut_filter"
3243 nnedi_filter_deps="gpl"
3244 ocr_filter_deps="libtesseract"
3245 ocv_filter_deps="libopencv"
3246 openclsrc_filter_deps="opencl"
3247 overlay_opencl_filter_deps="opencl"
3248 overlay_qsv_filter_deps="libmfx"
3249 overlay_qsv_filter_select="qsvvpp"
3250 owdenoise_filter_deps="gpl"
3251 pan_filter_deps="swresample"
3252 perspective_filter_deps="gpl"
3253 phase_filter_deps="gpl"
3254 pp7_filter_deps="gpl"
3255 pp_filter_deps="gpl postproc"
3256 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3257 program_opencl_filter_deps="opencl"
3258 pullup_filter_deps="gpl"
3259 removelogo_filter_deps="avcodec avformat swscale"
3260 repeatfields_filter_deps="gpl"
3261 resample_filter_deps="avresample"
3262 rubberband_filter_deps="librubberband"
3263 sab_filter_deps="gpl swscale"
3264 scale2ref_filter_deps="swscale"
3265 scale_filter_deps="swscale"
3266 scale_qsv_filter_deps="libmfx"
3267 select_filter_select="pixelutils"
3268 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3269 showcqt_filter_deps="avcodec avformat swscale"
3270 showcqt_filter_suggest="libfontconfig libfreetype"
3271 showcqt_filter_select="fft"
3272 showfreqs_filter_deps="avcodec"
3273 showfreqs_filter_select="fft"
3274 showspectrum_filter_deps="avcodec"
3275 showspectrum_filter_select="fft"
3276 showspectrumpic_filter_deps="avcodec"
3277 showspectrumpic_filter_select="fft"
3278 signature_filter_deps="gpl avcodec avformat"
3279 smartblur_filter_deps="gpl swscale"
3280 sofalizer_filter_deps="libmysofa avcodec"
3281 sofalizer_filter_select="fft"
3282 spectrumsynth_filter_deps="avcodec"
3283 spectrumsynth_filter_select="fft"
3284 spp_filter_deps="gpl avcodec"
3285 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3286 stereo3d_filter_deps="gpl"
3287 subtitles_filter_deps="avformat avcodec libass"
3288 super2xsai_filter_deps="gpl"
3289 pixfmts_super2xsai_test_deps="super2xsai_filter"
3290 tinterlace_filter_deps="gpl"
3291 tinterlace_merge_test_deps="tinterlace_filter"
3292 tinterlace_pad_test_deps="tinterlace_filter"
3293 tonemap_filter_deps="const_nan"
3294 unsharp_opencl_filter_deps="opencl"
3295 uspp_filter_deps="gpl avcodec"
3296 vaguedenoiser_filter_deps="gpl"
3297 vidstabdetect_filter_deps="libvidstab"
3298 vidstabtransform_filter_deps="libvidstab"
3299 libvmaf_filter_deps="libvmaf pthreads"
3300 zmq_filter_deps="libzmq"
3301 zoompan_filter_deps="swscale"
3302 zscale_filter_deps="libzimg const_nan"
3303 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3304 vpp_qsv_filter_deps="libmfx"
3305 vpp_qsv_filter_select="qsvvpp"
3306
3307 # examples
3308 avio_dir_cmd_deps="avformat avutil"
3309 avio_reading_deps="avformat avcodec avutil"
3310 decode_audio_example_deps="avcodec avutil"
3311 decode_video_example_deps="avcodec avutil"
3312 demuxing_decoding_example_deps="avcodec avformat avutil"
3313 encode_audio_example_deps="avcodec avutil"
3314 encode_video_example_deps="avcodec avutil"
3315 extract_mvs_example_deps="avcodec avformat avutil"
3316 filter_audio_example_deps="avfilter avutil"
3317 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3318 filtering_video_example_deps="avfilter avcodec avformat avutil"
3319 http_multiclient_example_deps="avformat avutil fork"
3320 hw_decode_example_deps="avcodec avformat avutil"
3321 metadata_example_deps="avformat avutil"
3322 muxing_example_deps="avcodec avformat avutil swscale"
3323 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3324 remuxing_example_deps="avcodec avformat avutil"
3325 resampling_audio_example_deps="avutil swresample"
3326 scaling_video_example_deps="avutil swscale"
3327 transcode_aac_example_deps="avcodec avformat swresample"
3328 transcoding_example_deps="avfilter avcodec avformat avutil"
3329 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3330 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3331
3332 # EXTRALIBS_LIST
3333 cpu_init_extralibs="pthreads_extralibs"
3334 cws2fws_extralibs="zlib_extralibs"
3335
3336 # libraries, in linking order
3337 avcodec_deps="avutil"
3338 avcodec_suggest="libm"
3339 avcodec_select="null_bsf"
3340 avdevice_deps="avformat avcodec avutil"
3341 avdevice_suggest="libm"
3342 avfilter_deps="avutil"
3343 avfilter_suggest="libm"
3344 avformat_deps="avcodec avutil"
3345 avformat_suggest="libm network zlib"
3346 avresample_deps="avutil"
3347 avresample_suggest="libm"
3348 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3349 postproc_deps="avutil gpl"
3350 postproc_suggest="libm"
3351 swresample_deps="avutil"
3352 swresample_suggest="libm libsoxr"
3353 swscale_deps="avutil"
3354 swscale_suggest="libm"
3355
3356 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3357 avfilter_extralibs="pthreads_extralibs"
3358 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3359
3360 # programs
3361 ffmpeg_deps="avcodec avfilter avformat swresample"
3362 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3363                null_filter
3364                trim_filter"
3365 ffmpeg_suggest="ole32 psapi shell32"
3366 ffplay_deps="avcodec avformat swscale swresample sdl2"
3367 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3368 ffplay_suggest="shell32"
3369 ffprobe_deps="avcodec avformat"
3370 ffprobe_suggest="shell32"
3371
3372 # documentation
3373 podpages_deps="perl"
3374 manpages_deps="perl pod2man"
3375 htmlpages_deps="perl"
3376 htmlpages_deps_any="makeinfo_html texi2html"
3377 txtpages_deps="perl makeinfo"
3378 doc_deps_any="manpages htmlpages podpages txtpages"
3379
3380 # default parameters
3381
3382 logfile="ffbuild/config.log"
3383
3384 # installation paths
3385 prefix_default="/usr/local"
3386 bindir_default='${prefix}/bin'
3387 datadir_default='${prefix}/share/ffmpeg'
3388 docdir_default='${prefix}/share/doc/ffmpeg'
3389 incdir_default='${prefix}/include'
3390 libdir_default='${prefix}/lib'
3391 mandir_default='${prefix}/share/man'
3392
3393 # toolchain
3394 ar_default="ar"
3395 cc_default="gcc"
3396 cxx_default="g++"
3397 host_cc_default="gcc"
3398 doxygen_default="doxygen"
3399 install="install"
3400 ln_s_default="ln -s -f"
3401 nm_default="nm -g"
3402 pkg_config_default=pkg-config
3403 ranlib_default="ranlib"
3404 strip_default="strip"
3405 version_script='--version-script'
3406 objformat="elf32"
3407 x86asmexe_default="nasm"
3408 windres_default="windres"
3409 nvcc_default="nvcc"
3410 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3411 striptype="direct"
3412
3413 # OS
3414 target_os_default=$(tolower $(uname -s))
3415 host_os=$target_os_default
3416
3417 # machine
3418 if test "$target_os_default" = aix; then
3419     arch_default=$(uname -p)
3420     strip_default="strip -X32_64"
3421 else
3422     arch_default=$(uname -m)
3423 fi
3424 cpu="generic"
3425 intrinsics="none"
3426
3427 # configurable options
3428 enable $PROGRAM_LIST
3429 enable $DOCUMENT_LIST
3430 enable $EXAMPLE_LIST
3431 enable $(filter_out avresample $LIBRARY_LIST)
3432 enable stripping
3433
3434 enable asm
3435 enable debug
3436 enable doc
3437 enable faan faandct faanidct
3438 enable optimizations
3439 enable runtime_cpudetect
3440 enable safe_bitstream_reader
3441 enable static
3442 enable swscale_alpha
3443 enable valgrind_backtrace
3444
3445 sws_max_filter_size_default=256
3446 set_default sws_max_filter_size
3447
3448 # internal components are enabled by default
3449 enable $EXTRALIBS_LIST
3450
3451 # Avoid external, non-system, libraries getting enabled by dependency resolution
3452 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3453
3454 # build settings
3455 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3456 LIBPREF="lib"
3457 LIBSUF=".a"
3458 FULLNAME='$(NAME)$(BUILDSUF)'
3459 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3460 SLIBPREF="lib"
3461 SLIBSUF=".so"
3462 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3463 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3464 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3465 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3466 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3467 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3468 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3469
3470 asflags_filter=echo
3471 cflags_filter=echo
3472 ldflags_filter=echo
3473
3474 AS_C='-c'
3475 AS_O='-o $@'
3476 CC_C='-c'
3477 CC_E='-E -o $@'
3478 CC_O='-o $@'
3479 CXX_C='-c'
3480 CXX_O='-o $@'
3481 OBJCC_C='-c'
3482 OBJCC_E='-E -o $@'
3483 OBJCC_O='-o $@'
3484 X86ASM_O='-o $@'
3485 LD_O='-o $@'
3486 LD_LIB='-l%'
3487 LD_PATH='-L'
3488 HOSTCC_C='-c'
3489 HOSTCC_E='-E -o $@'
3490 HOSTCC_O='-o $@'
3491 HOSTLD_O='-o $@'
3492 NVCC_C='-c'
3493 NVCC_O='-o $@'
3494
3495 host_extralibs='-lm'
3496 host_cflags_filter=echo
3497 host_ldflags_filter=echo
3498
3499 target_path='$(CURDIR)'
3500
3501 # since the object filename is not given with the -MM flag, the compiler
3502 # is only able to print the basename, and we must add the path ourselves
3503 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3504 DEPFLAGS='-MM'
3505
3506 mkdir -p ffbuild
3507
3508 # find source path
3509 if test -f configure; then
3510     source_path=.
3511 else
3512     source_path=$(cd $(dirname "$0"); pwd)
3513     case "$source_path" in
3514         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3515     esac
3516     test -e "$source_path/config.h" &&
3517         die "Out of tree builds are impossible with config.h in source dir."
3518 fi
3519
3520 for v in "$@"; do
3521     r=${v#*=}
3522     l=${v%"$r"}
3523     r=$(sh_quote "$r")
3524     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3525 done
3526
3527 find_things(){
3528     thing=$1
3529     pattern=$2
3530     file=$source_path/$3
3531     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3532 }
3533
3534 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3535
3536 find_things_extern(){
3537     thing=$1
3538     pattern=$2
3539     file=$source_path/$3
3540     out=${4:-$thing}
3541     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3542 }
3543
3544 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3545 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3546 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3547 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3548 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3549 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3550 CODEC_LIST="
3551     $ENCODER_LIST
3552     $DECODER_LIST
3553 "
3554 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3555 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3556 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3557 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3558
3559 AVCODEC_COMPONENTS_LIST="
3560     $BSF_LIST
3561     $DECODER_LIST
3562     $ENCODER_LIST
3563     $HWACCEL_LIST
3564     $PARSER_LIST
3565 "
3566
3567 AVDEVICE_COMPONENTS_LIST="
3568     $INDEV_LIST
3569     $OUTDEV_LIST
3570 "
3571
3572 AVFILTER_COMPONENTS_LIST="
3573     $FILTER_LIST
3574 "
3575
3576 AVFORMAT_COMPONENTS_LIST="
3577     $DEMUXER_LIST
3578     $MUXER_LIST
3579     $PROTOCOL_LIST
3580 "
3581
3582 ALL_COMPONENTS="
3583     $AVCODEC_COMPONENTS_LIST
3584     $AVDEVICE_COMPONENTS_LIST
3585     $AVFILTER_COMPONENTS_LIST
3586     $AVFORMAT_COMPONENTS_LIST
3587 "
3588
3589 for n in $COMPONENT_LIST; do
3590     v=$(toupper ${n%s})_LIST
3591     eval enable \$$v
3592     eval ${n}_if_any="\$$v"
3593 done
3594
3595 enable $ARCH_EXT_LIST
3596
3597 die_unknown(){
3598     echo "Unknown option \"$1\"."
3599     echo "See $0 --help for available options."
3600     exit 1
3601 }
3602
3603 print_in_columns() {
3604     cols=$(expr $ncols / 24)
3605     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3606 }
3607
3608 show_list() {
3609     suffix=_$1
3610     shift
3611     echo $* | sed s/$suffix//g | print_in_columns
3612     exit 0
3613 }
3614
3615 rand_list(){
3616     IFS=', '
3617     set -- $*
3618     unset IFS
3619     for thing; do
3620         comp=${thing%:*}
3621         prob=${thing#$comp}
3622         prob=${prob#:}
3623         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3624         echo "prob ${prob:-0.5}"
3625         printf '%s\n' $comp
3626     done
3627 }
3628
3629 do_random(){
3630     action=$1
3631     shift
3632     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3633     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3634 }
3635
3636 for opt do
3637     optval="${opt#*=}"
3638     case "$opt" in
3639         --extra-ldflags=*)
3640             add_ldflags $optval
3641         ;;
3642         --extra-ldexeflags=*)
3643             add_ldexeflags $optval
3644         ;;
3645         --extra-ldsoflags=*)
3646             add_ldsoflags $optval
3647         ;;
3648         --extra-ldlibflags=*)
3649             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3650                  "removed in the future. Use --extra-ldsoflags instead."
3651             add_ldsoflags $optval
3652         ;;
3653         --extra-libs=*)
3654             add_extralibs $optval
3655         ;;
3656         --disable-devices)
3657             disable $INDEV_LIST $OUTDEV_LIST
3658         ;;
3659         --enable-debug=*)
3660             debuglevel="$optval"
3661         ;;
3662         --disable-programs)
3663             disable $PROGRAM_LIST
3664         ;;
3665         --disable-everything)
3666             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3667         ;;
3668         --disable-all)
3669             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3670             disable $LIBRARY_LIST $PROGRAM_LIST doc
3671             enable avutil
3672         ;;
3673         --enable-random|--disable-random)
3674             action=${opt%%-random}
3675             do_random ${action#--} $COMPONENT_LIST
3676         ;;
3677         --enable-random=*|--disable-random=*)
3678             action=${opt%%-random=*}
3679             do_random ${action#--} $optval
3680         ;;
3681         --enable-sdl)
3682             enable sdl2
3683         ;;
3684         --enable-*=*|--disable-*=*)
3685             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3686             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3687             eval list=\$$(toupper $thing)_LIST
3688             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3689             list=$(filter "$name" $list)
3690             [ "$list" = "" ] && warn "Option $opt did not match anything"
3691             $action $list
3692         ;;
3693         --enable-yasm|--disable-yasm)
3694             warn "The ${opt} option is only provided for compatibility and will be\n"\
3695                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3696             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3697         ;;
3698         --yasmexe=*)
3699             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3700                  "removed in the future. Use --x86asmexe instead."
3701             x86asmexe="$optval"
3702         ;;
3703         --enable-?*|--disable-?*)
3704             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3705             if is_in $option $COMPONENT_LIST; then
3706                 test $action = disable && action=unset
3707                 eval $action \$$(toupper ${option%s})_LIST
3708             elif is_in $option $CMDLINE_SELECT; then
3709                 $action $option
3710             else
3711                 die_unknown $opt
3712             fi
3713         ;;
3714         --list-*)
3715             NAME="${opt#--list-}"
3716             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3717             NAME=${NAME%s}
3718             eval show_list $NAME \$$(toupper $NAME)_LIST
3719         ;;
3720         --help|-h) show_help
3721         ;;
3722         --quiet|-q) quiet=yes
3723         ;;
3724         --fatal-warnings) enable fatal_warnings
3725         ;;
3726         --libfuzzer=*)
3727             libfuzzer_path="$optval"
3728         ;;
3729         *)
3730             optname="${opt%%=*}"
3731             optname="${optname#--}"
3732             optname=$(echo "$optname" | sed 's/-/_/g')
3733             if is_in $optname $CMDLINE_SET; then
3734                 eval $optname='$optval'
3735             elif is_in $optname $CMDLINE_APPEND; then
3736                 append $optname "$optval"
3737             else
3738                 die_unknown $opt
3739             fi
3740         ;;
3741     esac
3742 done
3743
3744 for e in $env; do
3745     eval "export $e"
3746 done
3747
3748 if disabled autodetect; then
3749
3750     # Unless iconv is explicitely disabled by the user, we still want to probe
3751     # for the iconv from the libc.
3752     disabled iconv || enable libc_iconv
3753
3754     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3755     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3756 fi
3757 # Mark specifically enabled, but normally autodetected libraries as requested.
3758 for lib in $AUTODETECT_LIBS; do
3759     enabled $lib && request $lib
3760 done
3761 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3762 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3763 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3764
3765 disabled logging && logfile=/dev/null
3766
3767 # command line configuration sanity checks
3768
3769 # we need to build at least one lib type
3770 if ! enabled_any static shared; then
3771     cat <<EOF
3772 At least one library type must be built.
3773 Specify --enable-static to build the static libraries or --enable-shared to
3774 build the shared libraries as well. To only build the shared libraries specify
3775 --disable-static in addition to --enable-shared.
3776 EOF
3777     exit 1
3778 fi
3779
3780 die_license_disabled() {
3781     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3782 }
3783
3784 die_license_disabled_gpl() {
3785     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3786 }
3787
3788 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3789 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3790
3791 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3792 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3793
3794 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3795
3796 enabled_all gnutls openssl &&
3797     die "GnuTLS and OpenSSL must not be enabled at the same time."
3798
3799 # Disable all the library-specific components if the library itself
3800 # is disabled, see AVCODEC_LIST and following _LIST variables.
3801
3802 disable_components(){
3803     disabled ${1} && disable $(
3804         eval components="\$$(toupper ${1})_COMPONENTS"
3805         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3806     )
3807 }
3808
3809 map 'disable_components $v' $LIBRARY_LIST
3810
3811 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3812 set >> $logfile
3813
3814 test -n "$valgrind" && toolchain="valgrind-memcheck"
3815
3816 enabled ossfuzz && {
3817     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3818     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3819 }
3820
3821 case "$toolchain" in
3822     *-asan)
3823         cc_default="${toolchain%-asan}"
3824         add_cflags  -fsanitize=address
3825         add_ldflags -fsanitize=address
3826     ;;
3827     *-msan)
3828         cc_default="${toolchain%-msan}"
3829         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3830         add_ldflags -fsanitize=memory
3831     ;;
3832     *-tsan)
3833         cc_default="${toolchain%-tsan}"
3834         add_cflags  -fsanitize=thread -fPIE
3835         add_ldflags -fsanitize=thread -pie
3836         case "$toolchain" in
3837             gcc-tsan)
3838                 add_cflags  -fPIC
3839                 add_ldflags -fPIC
3840                 ;;
3841         esac
3842     ;;
3843     *-usan)
3844         cc_default="${toolchain%-usan}"
3845         add_cflags  -fsanitize=undefined
3846         add_ldflags -fsanitize=undefined
3847     ;;
3848     valgrind-*)
3849         target_exec_default="valgrind"
3850         case "$toolchain" in
3851             valgrind-massif)
3852                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3853                 ;;
3854             valgrind-memcheck)
3855                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3856                 ;;
3857         esac
3858     ;;
3859     msvc)
3860         # Check whether the current MSVC version needs the C99 converter.
3861         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3862         # support enough of C99 to build ffmpeg. Default to the new
3863         # behaviour if the regexp was unable to match anything, since this
3864         # successfully parses the version number of existing supported
3865         # versions that require the converter (MSVC 2010 and 2012).
3866         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3867         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3868             cc_default="cl"
3869             cxx_default="cl"
3870         else
3871             cc_default="c99wrap cl"
3872             cxx_default="c99wrap cl"
3873         fi
3874         ld_default="$source_path/compat/windows/mslink"
3875         nm_default="dumpbin -symbols"
3876         ar_default="lib"
3877         case "$arch" in
3878         aarch64|arm64)
3879             as_default="armasm64"
3880             ;;
3881         arm*)
3882             as_default="armasm"
3883             ;;
3884         esac
3885         target_os_default="win32"
3886         # Use a relative path for TMPDIR. This makes sure all the
3887         # ffconf temp files are written with a relative path, avoiding
3888         # issues with msys/win32 path conversion for MSVC parameters
3889         # such as -Fo<file> or -out:<file>.
3890         TMPDIR=.
3891     ;;
3892     icl)
3893         cc_default="icl"
3894         ld_default="xilink"
3895         nm_default="dumpbin -symbols"
3896         ar_default="xilib"
3897         target_os_default="win32"
3898         TMPDIR=.
3899     ;;
3900     gcov)
3901         add_cflags  -fprofile-arcs -ftest-coverage
3902         add_ldflags -fprofile-arcs -ftest-coverage
3903     ;;
3904     llvm-cov)
3905         add_cflags -fprofile-arcs -ftest-coverage
3906         add_ldflags --coverage
3907     ;;
3908     hardened)
3909         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3910         add_cflags   -fno-strict-overflow -fstack-protector-all
3911         add_ldflags  -Wl,-z,relro -Wl,-z,now
3912         add_cflags   -fPIE
3913         add_ldexeflags -fPIE -pie
3914     ;;
3915     ?*)
3916         die "Unknown toolchain $toolchain"
3917     ;;
3918 esac
3919
3920 if test -n "$cross_prefix"; then
3921     test -n "$arch" && test -n "$target_os" ||
3922         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3923     enable cross_compile
3924 fi
3925
3926 ar_default="${cross_prefix}${ar_default}"
3927 cc_default="${cross_prefix}${cc_default}"
3928 cxx_default="${cross_prefix}${cxx_default}"
3929 nm_default="${cross_prefix}${nm_default}"
3930 pkg_config_default="${cross_prefix}${pkg_config_default}"
3931 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3932     ranlib_default="${cross_prefix}${ranlib_default} -D"
3933 else
3934     ranlib_default="${cross_prefix}${ranlib_default}"
3935 fi
3936 strip_default="${cross_prefix}${strip_default}"
3937 windres_default="${cross_prefix}${windres_default}"
3938
3939 sysinclude_default="${sysroot}/usr/include"
3940
3941 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3942     target_exec target_os x86asmexe nvcc
3943 enabled cross_compile || host_cc_default=$cc
3944 set_default host_cc
3945
3946 pkg_config_fail_message=""
3947 if ! $pkg_config --version >/dev/null 2>&1; then
3948     warn "$pkg_config not found, library detection may fail."
3949     pkg_config=false
3950 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3951     pkg_config_fail_message="
3952 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3953 fi
3954
3955 if test $doxygen != $doxygen_default && \
3956   ! $doxygen --version >/dev/null 2>&1; then
3957     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3958 fi
3959
3960 exesuf() {
3961     case $1 in
3962         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3963     esac
3964 }
3965
3966 EXESUF=$(exesuf $target_os)
3967 HOSTEXESUF=$(exesuf $host_os)
3968
3969 # set temporary file name
3970 : ${TMPDIR:=$TEMPDIR}
3971 : ${TMPDIR:=$TMP}
3972 : ${TMPDIR:=/tmp}
3973
3974 if [ -n "$tempprefix" ] ; then
3975     mktemp(){
3976         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3977         echo "$tmpname"
3978         mkdir "$tmpname"
3979     }
3980 elif ! check_cmd mktemp -u XXXXXX; then
3981     # simple replacement for missing mktemp
3982     # NOT SAFE FOR GENERAL USE
3983     mktemp(){
3984         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3985         echo "$tmpname"
3986         mkdir "$tmpname"
3987     }
3988 fi
3989
3990 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3991     die "Unable to create temporary directory in $TMPDIR."
3992
3993 tmpfile(){
3994     tmp="${FFTMPDIR}/test"$2
3995     (set -C; exec > $tmp) 2> /dev/null ||
3996         die "Unable to create temporary file in $FFTMPDIR."
3997     eval $1=$tmp
3998 }
3999
4000 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4001 trap 'exit 2' INT
4002
4003 tmpfile TMPASM .asm
4004 tmpfile TMPC   .c
4005 tmpfile TMPCPP .cpp
4006 tmpfile TMPE   $EXESUF
4007 tmpfile TMPH   .h
4008 tmpfile TMPM   .m
4009 tmpfile TMPO   .o
4010 tmpfile TMPS   .S
4011 tmpfile TMPSH  .sh
4012 tmpfile TMPV   .ver
4013
4014 unset -f mktemp
4015
4016 chmod +x $TMPE
4017
4018 # make sure we can execute files in $TMPDIR
4019 cat > $TMPSH 2>> $logfile <<EOF
4020 #! /bin/sh
4021 EOF
4022 chmod +x $TMPSH >> $logfile 2>&1
4023 if ! $TMPSH >> $logfile 2>&1; then
4024     cat <<EOF
4025 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4026 variable to another directory and make sure that it is not mounted noexec.
4027 EOF
4028     die "Sanity test failed."
4029 fi
4030
4031 armasm_flags(){
4032     for flag; do
4033         case $flag in
4034             # Filter out MSVC cl.exe options from cflags that shouldn't
4035             # be passed to gas-preprocessor
4036             -M[TD]*)                                            ;;
4037             *)                  echo $flag                      ;;
4038         esac
4039    done
4040 }
4041
4042 cparser_flags(){
4043     for flag; do
4044         case $flag in
4045             -Wno-switch)             echo -Wno-switch-enum ;;
4046             -Wno-format-zero-length) ;;
4047             -Wdisabled-optimization) ;;
4048             -Wno-pointer-sign)       echo -Wno-other ;;
4049             *)                       echo $flag ;;
4050         esac
4051     done
4052 }
4053
4054 msvc_common_flags(){
4055     for flag; do
4056         case $flag in
4057             # In addition to specifying certain flags under the compiler
4058             # specific filters, they must be specified here as well or else the
4059             # generic catch all at the bottom will print the original flag.
4060             -Wall)                ;;
4061             -Wextra)              ;;
4062             -std=c99)             ;;
4063             # Common flags
4064             -fomit-frame-pointer) ;;
4065             -g)                   echo -Z7 ;;
4066             -fno-math-errno)      ;;
4067             -fno-common)          ;;
4068             -fno-signed-zeros)    ;;
4069             -fPIC)                ;;
4070             -mthumb)              ;;
4071             -march=*)             ;;
4072             -lz)                  echo zlib.lib ;;
4073             -lx264)               echo libx264.lib ;;
4074             -lstdc++)             ;;
4075             -l*)                  echo ${flag#-l}.lib ;;
4076             -LARGEADDRESSAWARE)   echo $flag ;;
4077             -L*)                  echo -libpath:${flag#-L} ;;
4078             *)                    echo $flag ;;
4079         esac
4080     done
4081 }
4082
4083 msvc_flags(){
4084     msvc_common_flags "$@"
4085     for flag; do
4086         case $flag in
4087             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4088                                        -wd4554 ;;
4089             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4090                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4091                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4092                                        -wd4307 \
4093                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4094         esac
4095     done
4096 }
4097
4098 icl_flags(){
4099     msvc_common_flags "$@"
4100     for flag; do
4101         case $flag in
4102             # Despite what Intel's documentation says -Wall, which is supported
4103             # on Windows, does enable remarks so disable them here.
4104             -Wall)                echo $flag -Qdiag-disable:remark ;;
4105             -std=c99)             echo -Qstd=c99 ;;
4106             -flto)                echo -ipo ;;
4107         esac
4108     done
4109 }
4110
4111 icc_flags(){
4112     for flag; do
4113         case $flag in
4114             -flto)                echo -ipo ;;
4115             *)                    echo $flag ;;
4116         esac
4117     done
4118 }
4119
4120 suncc_flags(){
4121     for flag; do
4122         case $flag in
4123             -march=*|-mcpu=*)
4124                 case "${flag#*=}" in
4125                     native)                   echo -xtarget=native       ;;
4126                     v9|niagara)               echo -xarch=sparc          ;;
4127                     ultrasparc)               echo -xarch=sparcvis       ;;
4128                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4129                     i586|pentium)             echo -xchip=pentium        ;;
4130                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4131                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4132                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4133                     pentium4*)          echo -xtarget=pentium4           ;;
4134                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4135                     *-sse3)             echo -xarch=sse3                 ;;
4136                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4137                     bonnell)                   echo -xarch=ssse3         ;;
4138                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4139                     westmere)                  echo -xtarget=westmere    ;;
4140                     silvermont)                echo -xarch=sse4_2        ;;
4141                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4142                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4143                                                echo -xarch=avx           ;;
4144                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4145                     btver1)                    echo -xarch=amdsse4a      ;;
4146                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4147                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4148                     k8|opteron|athlon64|athlon-fx)
4149                                                echo -xarch=sse2a         ;;
4150                     athlon*)                   echo -xarch=pentium_proa  ;;
4151                 esac
4152                 ;;
4153             -std=c99)             echo -xc99              ;;
4154             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4155             -fPIC)                echo -KPIC -xcode=pic32 ;;
4156             -W*,*)                echo $flag              ;;
4157             -f*-*|-W*|-mimpure-text)                      ;;
4158             -shared)              echo -G                 ;;
4159             *)                    echo $flag              ;;
4160         esac
4161     done
4162 }
4163
4164 probe_cc(){
4165     pfx=$1
4166     _cc=$2
4167     first=$3
4168
4169     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4170     unset _ld_o _ldflags _ld_lib _ld_path
4171     unset _depflags _DEPCMD _DEPFLAGS
4172     _flags_filter=echo
4173
4174     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4175         true # no-op to avoid reading stdin in following checks
4176     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4177         _type=llvm_gcc
4178         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4179         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4180         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4181         _cflags_speed='-O3'
4182         _cflags_size='-Os'
4183     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4184         _type=gcc
4185         gcc_version=$($_cc --version | head -n1)
4186         gcc_basever=$($_cc -dumpversion)
4187         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4188         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4189         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4190         case $gcc_basever in
4191             2) ;;
4192             2.*) ;;
4193             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4194         esac
4195         if [ "$first" = true ]; then
4196             case $gcc_basever in
4197                 4.2*)
4198                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4199             esac
4200         fi
4201         _cflags_speed='-O3'
4202         _cflags_size='-Os'
4203     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4204         _type=icc
4205         _ident=$($_cc --version | head -n1)
4206         _depflags='-MMD'
4207         _cflags_speed='-O3'
4208         _cflags_size='-Os'
4209         _cflags_noopt='-O1'
4210         _flags_filter=icc_flags
4211     elif $_cc -v 2>&1 | grep -q xlc; then
4212         _type=xlc
4213         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4214         _cflags_speed='-O5'
4215         _cflags_size='-O5 -qcompact'
4216     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4217         test -d "$sysroot" || die "No valid sysroot specified."
4218         _type=armcc
4219         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4220         armcc_conf="$PWD/armcc.conf"
4221         $_cc --arm_linux_configure                 \
4222              --arm_linux_config_file="$armcc_conf" \
4223              --configure_sysroot="$sysroot"        \
4224              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4225              die "Error creating armcc configuration file."
4226         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4227         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4228         as_default="${cross_prefix}gcc"
4229         _depflags='-MMD'
4230         _cflags_speed='-O3'
4231         _cflags_size='-Os'
4232     elif $_cc -v 2>&1 | grep -q clang; then
4233         _type=clang
4234         _ident=$($_cc --version 2>/dev/null | head -n1)
4235         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4236         _cflags_speed='-O3'
4237         _cflags_size='-Oz'
4238     elif $_cc -V 2>&1 | grep -q Sun; then
4239         _type=suncc
4240         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4241         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4242         _DEPFLAGS='-xM1 -xc99'
4243         _ldflags='-std=c99'
4244         _cflags_speed='-O5'
4245         _cflags_size='-O5 -xspace'
4246         _flags_filter=suncc_flags
4247     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4248         _type=pathscale
4249         _ident=$($_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'
4254     elif $_cc -v 2>&1 | grep -q Open64; then
4255         _type=open64
4256         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4257         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4258         _cflags_speed='-O2'
4259         _cflags_size='-Os'
4260         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4261     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4262         _type=armasm
4263         _ident=$($_cc | head -n1)
4264         # 4509: "This form of conditional instruction is deprecated"
4265         _flags="-nologo -ignore 4509"
4266         _flags_filter=armasm_flags
4267     elif $_cc 2>&1 | grep -q Intel; then
4268         _type=icl
4269         _ident=$($_cc 2>&1 | head -n1)
4270         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4271         # Not only is O3 broken on 13.x+ but it is slower on all previous
4272         # versions (tested) as well.
4273         _cflags_speed="-O2"
4274         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4275         if $_cc 2>&1 | grep -q Linker; then
4276             _ld_o='-out:$@'
4277         else
4278             _ld_o='-Fe$@'
4279         fi
4280         _cc_o='-Fo$@'
4281         _cc_e='-P'
4282         _flags_filter=icl_flags
4283         _ld_lib='lib%.a'
4284         _ld_path='-libpath:'
4285         # -Qdiag-error to make icl error when seeing certain unknown arguments
4286         _flags='-nologo -Qdiag-error:4044,10157'
4287         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4288         # with MSVC which enables it by default.
4289         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4290         disable stripping
4291     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4292         # lld can emulate multiple different linkers; in ms link.exe mode,
4293         # the -? parameter gives the help output which contains an identifyable
4294         # string, while it gives an error in other modes.
4295         _type=lld-link
4296         # The link.exe mode doesn't have a switch for getting the version,
4297         # but we can force it back to gnu mode and get the version from there.
4298         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4299         _ld_o='-out:$@'
4300         _flags_filter=msvc_flags
4301         _ld_lib='lib%.a'
4302         _ld_path='-libpath:'
4303     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4304         _type=msvc
4305         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4306         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4307         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4308         _cflags_speed="-O2"
4309         _cflags_size="-O1"
4310         _cflags_noopt="-O1"
4311         if $_cc -nologo- 2>&1 | grep -q Linker; then
4312             _ld_o='-out:$@'
4313         else
4314             _ld_o='-Fe$@'
4315         fi
4316         _cc_o='-Fo$@'
4317         _cc_e='-P -Fi$@'
4318         _flags_filter=msvc_flags
4319         _ld_lib='lib%.a'
4320         _ld_path='-libpath:'
4321         _flags='-nologo'
4322         disable stripping
4323     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4324         _type=cparser
4325         _ident=$($_cc --version | head -n1)
4326         _depflags='-MMD'
4327         _cflags_speed='-O4'
4328         _cflags_size='-O2'
4329         _flags_filter=cparser_flags
4330     fi
4331
4332     eval ${pfx}_type=\$_type
4333     eval ${pfx}_ident=\$_ident
4334 }
4335
4336 set_ccvars(){
4337     eval ${1}_C=\${_cc_c-\${${1}_C}}
4338     eval ${1}_E=\${_cc_e-\${${1}_E}}
4339     eval ${1}_O=\${_cc_o-\${${1}_O}}
4340
4341     if [ -n "$_depflags" ]; then
4342         eval ${1}_DEPFLAGS=\$_depflags
4343     else
4344         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4345         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4346         eval DEP${1}FLAGS=\$_flags
4347     fi
4348 }
4349
4350 probe_cc cc "$cc" "true"
4351 cflags_filter=$_flags_filter
4352 cflags_speed=$_cflags_speed
4353 cflags_size=$_cflags_size
4354 cflags_noopt=$_cflags_noopt
4355 add_cflags $_flags $_cflags
4356 cc_ldflags=$_ldflags
4357 set_ccvars CC
4358 set_ccvars CXX
4359
4360 probe_cc hostcc "$host_cc"
4361 host_cflags_filter=$_flags_filter
4362 host_cflags_speed=$_cflags_speed
4363 add_host_cflags  $_flags $_cflags
4364 set_ccvars HOSTCC
4365
4366 test -n "$cc_type" && enable $cc_type ||
4367     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4368
4369 : ${as_default:=$cc}
4370 : ${objcc_default:=$cc}
4371 : ${dep_cc_default:=$cc}
4372 : ${ld_default:=$cc}
4373 : ${host_ld_default:=$host_cc}
4374 set_default ar as objcc dep_cc ld ln_s host_ld windres
4375
4376 probe_cc as "$as"
4377 asflags_filter=$_flags_filter
4378 add_asflags $_flags $_cflags
4379 set_ccvars AS
4380
4381 probe_cc objcc "$objcc"
4382 objcflags_filter=$_flags_filter
4383 add_objcflags $_flags $_cflags
4384 set_ccvars OBJC
4385
4386 probe_cc ld "$ld"
4387 ldflags_filter=$_flags_filter
4388 add_ldflags $_flags $_ldflags
4389 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4390 LD_O=${_ld_o-$LD_O}
4391 LD_LIB=${_ld_lib-$LD_LIB}
4392 LD_PATH=${_ld_path-$LD_PATH}
4393
4394 probe_cc hostld "$host_ld"
4395 host_ldflags_filter=$_flags_filter
4396 add_host_ldflags $_flags $_ldflags
4397 HOSTLD_O=${_ld_o-$HOSTLD_O}
4398
4399 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4400     probe_cc depcc "$dep_cc"
4401     CCDEP=${_DEPCMD:-$DEPCMD}
4402     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4403     DEPCCFLAGS=$_flags
4404 fi
4405
4406 if $ar 2>&1 | grep -q Microsoft; then
4407     arflags="-nologo"
4408     ar_o='-out:$@'
4409 elif $ar 2>&1 | grep -q "\[D\] "; then
4410     arflags="rcD"
4411     ar_o='$@'
4412 else
4413     arflags="rc"
4414     ar_o='$@'
4415 fi
4416
4417 add_cflags $extra_cflags
4418 add_cxxflags $extra_cxxflags
4419 add_objcflags $extra_objcflags
4420 add_asflags $extra_cflags
4421
4422 if test -n "$sysroot"; then
4423     case "$cc_type" in
4424         gcc|llvm_gcc|clang)
4425             add_cppflags --sysroot="$sysroot"
4426             add_ldflags --sysroot="$sysroot"
4427         ;;
4428     esac
4429 fi
4430
4431 if test "$cpu" = host; then
4432     enabled cross_compile &&
4433         die "--cpu=host makes no sense when cross-compiling."
4434
4435     case "$cc_type" in
4436         gcc|llvm_gcc)
4437             check_native(){
4438                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4439                 sed -n "/cc1.*$1=/{
4440                             s/.*$1=\\([^ ]*\\).*/\\1/
4441                             p
4442                             q
4443                         }" $TMPE
4444             }
4445             cpu=$(check_native -march || check_native -mcpu)
4446         ;;
4447         clang)
4448             check_native(){
4449                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4450                 sed -n "/cc1.*-target-cpu /{
4451                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4452                             p
4453                             q
4454                         }" $TMPE
4455             }
4456             cpu=$(check_native -march)
4457         ;;
4458     esac
4459
4460     test "${cpu:-host}" = host &&
4461         die "--cpu=host not supported with compiler $cc"
4462 fi
4463
4464 # Deal with common $arch aliases
4465 case "$arch" in
4466     aarch64|arm64)
4467         arch="aarch64"
4468     ;;
4469     arm*|iPad*|iPhone*)
4470         arch="arm"
4471     ;;
4472     mips*|IP*)
4473         case "$arch" in
4474         *el)
4475             add_cppflags -EL
4476             add_ldflags -EL
4477         ;;
4478         *eb)
4479             add_cppflags -EB
4480             add_ldflags -EB
4481         ;;
4482         esac
4483         arch="mips"
4484     ;;
4485     parisc*|hppa*)
4486         arch="parisc"
4487     ;;
4488     "Power Macintosh"|ppc*|powerpc*)
4489         arch="ppc"
4490     ;;
4491     s390|s390x)
4492         arch="s390"
4493     ;;
4494     sh4|sh)
4495         arch="sh4"
4496     ;;
4497     sun4*|sparc*)
4498         arch="sparc"
4499     ;;
4500     tilegx|tile-gx)
4501         arch="tilegx"
4502     ;;
4503     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4504         arch="x86"
4505     ;;
4506 esac
4507
4508 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4509 enable $arch
4510
4511 # Add processor-specific flags
4512 if enabled aarch64; then
4513
4514     case $cpu in
4515         armv*)
4516             cpuflags="-march=$cpu"
4517         ;;
4518         *)
4519             cpuflags="-mcpu=$cpu"
4520         ;;
4521     esac
4522
4523 elif enabled alpha; then
4524
4525     cpuflags="-mcpu=$cpu"
4526
4527 elif enabled arm; then
4528
4529     check_arm_arch() {
4530         check_cpp_condition stddef.h \
4531             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4532             $cpuflags
4533     }
4534
4535     probe_arm_arch() {
4536         if   check_arm_arch 4;        then echo armv4
4537         elif check_arm_arch 4T;       then echo armv4t
4538         elif check_arm_arch 5;        then echo armv5
4539         elif check_arm_arch 5E;       then echo armv5e
4540         elif check_arm_arch 5T;       then echo armv5t
4541         elif check_arm_arch 5TE;      then echo armv5te
4542         elif check_arm_arch 5TEJ;     then echo armv5te
4543         elif check_arm_arch 6;        then echo armv6
4544         elif check_arm_arch 6J;       then echo armv6j
4545         elif check_arm_arch 6K;       then echo armv6k
4546         elif check_arm_arch 6Z;       then echo armv6z
4547         elif check_arm_arch 6KZ;      then echo armv6zk
4548         elif check_arm_arch 6ZK;      then echo armv6zk
4549         elif check_arm_arch 6T2;      then echo armv6t2
4550         elif check_arm_arch 7;        then echo armv7
4551         elif check_arm_arch 7A  7_A;  then echo armv7-a
4552         elif check_arm_arch 7S;       then echo armv7-a
4553         elif check_arm_arch 7R  7_R;  then echo armv7-r
4554         elif check_arm_arch 7M  7_M;  then echo armv7-m
4555         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4556         elif check_arm_arch 8A  8_A;  then echo armv8-a
4557         fi
4558     }
4559
4560     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4561
4562     case $cpu in
4563         armv*)
4564             cpuflags="-march=$cpu"
4565             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4566         ;;
4567         *)
4568             cpuflags="-mcpu=$cpu"
4569             case $cpu in
4570                 cortex-a*)                               subarch=armv7a  ;;
4571                 cortex-r*)                               subarch=armv7r  ;;
4572                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4573                 arm11*)                                  subarch=armv6   ;;
4574                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4575                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4576                 *)                             subarch=$(probe_arm_arch) ;;
4577             esac
4578         ;;
4579     esac
4580
4581     case "$subarch" in
4582         armv5t*)    enable fast_clz                ;;
4583         armv[6-8]*)
4584             enable fast_clz
4585             disabled fast_unaligned || enable fast_unaligned
4586             ;;
4587     esac
4588
4589 elif enabled avr32; then
4590
4591     case $cpu in
4592         ap7[02]0[0-2])
4593             subarch="avr32_ap"
4594             cpuflags="-mpart=$cpu"
4595         ;;
4596         ap)
4597             subarch="avr32_ap"
4598             cpuflags="-march=$cpu"
4599         ;;
4600         uc3[ab]*)
4601             subarch="avr32_uc"
4602             cpuflags="-mcpu=$cpu"
4603         ;;
4604         uc)
4605             subarch="avr32_uc"
4606             cpuflags="-march=$cpu"
4607         ;;
4608     esac
4609
4610 elif enabled bfin; then
4611
4612     cpuflags="-mcpu=$cpu"
4613
4614 elif enabled mips; then
4615
4616     cpuflags="-march=$cpu"
4617
4618     if [ "$cpu" != "generic" ]; then
4619         disable mips32r2
4620         disable mips32r5
4621         disable mips64r2
4622         disable mips32r6
4623         disable mips64r6
4624         disable loongson2
4625         disable loongson3
4626
4627         case $cpu in
4628             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4629                 enable mips32r2
4630                 disable msa
4631             ;;
4632             p5600|i6400|p6600)
4633                 disable mipsdsp
4634                 disable mipsdspr2
4635             ;;
4636             loongson*)
4637                 enable loongson2
4638                 enable loongson3
4639                 enable local_aligned
4640                 enable simd_align_16
4641                 enable fast_64bit
4642                 enable fast_clz
4643                 enable fast_cmov
4644                 enable fast_unaligned
4645                 disable aligned_stack
4646                 disable mipsfpu
4647                 disable mipsdsp
4648                 disable mipsdspr2
4649                 case $cpu in
4650                     loongson3*)
4651                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4652                     ;;
4653                     loongson2e)
4654                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4655                     ;;
4656                     loongson2f)
4657                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4658                     ;;
4659                 esac
4660             ;;
4661             *)
4662                 # Unknown CPU. Disable everything.
4663                 warn "unknown CPU. Disabling all MIPS optimizations."
4664                 disable mipsfpu
4665                 disable mipsdsp
4666                 disable mipsdspr2
4667                 disable msa
4668                 disable mmi
4669             ;;
4670         esac
4671
4672         case $cpu in
4673             24kc)
4674                 disable mipsfpu
4675                 disable mipsdsp
4676                 disable mipsdspr2
4677             ;;
4678             24kf*)
4679                 disable mipsdsp
4680                 disable mipsdspr2
4681             ;;
4682             24kec|34kc|1004kc)
4683                 disable mipsfpu
4684                 disable mipsdspr2
4685             ;;
4686             24kef*|34kf*|1004kf*)
4687                 disable mipsdspr2
4688             ;;
4689             74kc)
4690                 disable mipsfpu
4691             ;;
4692             p5600)
4693                 enable mips32r5
4694                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4695             ;;
4696             i6400)
4697                 enable mips64r6
4698                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4699             ;;
4700             p6600)
4701                 enable mips64r6
4702                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4703             ;;
4704         esac
4705     else
4706         # We do not disable anything. Is up to the user to disable the unwanted features.
4707         warn 'generic cpu selected'
4708     fi
4709
4710 elif enabled ppc; then
4711
4712     disable ldbrx
4713
4714     case $(tolower $cpu) in
4715         601|ppc601|powerpc601)
4716             cpuflags="-mcpu=601"
4717             disable altivec
4718         ;;
4719         603*|ppc603*|powerpc603*)
4720             cpuflags="-mcpu=603"
4721             disable altivec
4722         ;;
4723         604*|ppc604*|powerpc604*)
4724             cpuflags="-mcpu=604"
4725             disable altivec
4726         ;;
4727         g3|75*|ppc75*|powerpc75*)
4728             cpuflags="-mcpu=750"
4729             disable altivec
4730         ;;
4731         g4|745*|ppc745*|powerpc745*)
4732             cpuflags="-mcpu=7450"
4733             disable vsx
4734         ;;
4735         74*|ppc74*|powerpc74*)
4736             cpuflags="-mcpu=7400"
4737             disable vsx
4738         ;;
4739         g5|970|ppc970|powerpc970)
4740             cpuflags="-mcpu=970"
4741             disable vsx
4742         ;;
4743         power[3-6]*)
4744             cpuflags="-mcpu=$cpu"
4745             disable vsx
4746         ;;
4747         power[7-8]*)
4748             cpuflags="-mcpu=$cpu"
4749         ;;
4750         cell)
4751             cpuflags="-mcpu=cell"
4752             enable ldbrx
4753             disable vsx
4754         ;;
4755         e500mc)
4756             cpuflags="-mcpu=e500mc"
4757             disable altivec
4758         ;;
4759         e500v2)
4760             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4761             disable altivec
4762             disable dcbzl
4763         ;;
4764         e500)
4765             cpuflags="-mcpu=8540 -mhard-float"
4766             disable altivec
4767             disable dcbzl
4768         ;;
4769     esac
4770
4771 elif enabled sparc; then
4772
4773     case $cpu in
4774         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4775             cpuflags="-mcpu=$cpu"
4776         ;;
4777         ultrasparc*|niagara[234])
4778             cpuflags="-mcpu=$cpu"
4779         ;;
4780     esac
4781
4782 elif enabled x86; then
4783
4784     case $cpu in
4785         i[345]86|pentium)
4786             cpuflags="-march=$cpu"
4787             disable i686
4788             disable mmx
4789         ;;
4790         # targets that do NOT support nopl and conditional mov (cmov)
4791         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4792             cpuflags="-march=$cpu"
4793             disable i686
4794         ;;
4795         # targets that do support nopl and conditional mov (cmov)
4796         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4797         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4798         |amdfam10|barcelona|b[dt]ver*|znver*)
4799             cpuflags="-march=$cpu"
4800             enable i686
4801             enable fast_cmov
4802         ;;
4803         # targets that do support conditional mov but on which it's slow
4804         pentium4|pentium4m|prescott|nocona)
4805             cpuflags="-march=$cpu"
4806             enable i686
4807             disable fast_cmov
4808         ;;
4809     esac
4810
4811 fi
4812
4813 if [ "$cpu" != generic ]; then
4814     add_cflags  $cpuflags
4815     add_asflags $cpuflags
4816     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4817 fi
4818
4819 # compiler sanity check
4820 check_exec <<EOF
4821 int main(void){ return 0; }
4822 EOF
4823 if test "$?" != 0; then
4824     echo "$cc is unable to create an executable file."
4825     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4826         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4827         echo "Only do this if you know what cross compiling means."
4828     fi
4829     die "C compiler test failed."
4830 fi
4831
4832 add_cppflags -D_ISOC99_SOURCE
4833 add_cxxflags -D__STDC_CONSTANT_MACROS
4834 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4835
4836 # some compilers silently accept -std=c11, so we also need to check that the
4837 # version macro is defined properly
4838 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4839     add_cflags -std=c11 ||
4840     check_cflags -std=c99
4841
4842 check_cppflags -D_FILE_OFFSET_BITS=64
4843 check_cppflags -D_LARGEFILE_SOURCE
4844
4845 add_host_cppflags -D_ISOC99_SOURCE
4846 check_host_cflags -std=c99
4847 check_host_cflags -Wall
4848 check_host_cflags $host_cflags_speed
4849
4850 check_64bit(){
4851     arch32=$1
4852     arch64=$2
4853     expr=$3
4854     check_code cc "" "int test[2*($expr) - 1]" &&
4855         subarch=$arch64 || subarch=$arch32
4856     enable $subarch
4857 }
4858
4859 case "$arch" in
4860     aarch64|alpha|ia64)
4861         enabled shared && enable_weak pic
4862     ;;
4863     mips)
4864         check_64bit mips mips64 '_MIPS_SIM > 1'
4865         enabled shared && enable_weak pic
4866     ;;
4867     parisc)
4868         check_64bit parisc parisc64 'sizeof(void *) > 4'
4869         enabled shared && enable_weak pic
4870     ;;
4871     ppc)
4872         check_64bit ppc ppc64 'sizeof(void *) > 4'
4873         enabled shared && enable_weak pic
4874     ;;
4875     s390)
4876         check_64bit s390 s390x 'sizeof(void *) > 4'
4877         enabled shared && enable_weak pic
4878     ;;
4879     sparc)
4880         check_64bit sparc sparc64 'sizeof(void *) > 4'
4881         enabled shared && enable_weak pic
4882     ;;
4883     x86)
4884         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4885         # Treat x32 as x64 for now. Note it also needs pic if shared
4886         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4887             subarch=x86_64 && enable x86_64 && disable x86_32
4888         if enabled x86_64; then
4889             enabled shared && enable_weak pic
4890             objformat=elf64
4891         fi
4892     ;;
4893 esac
4894
4895 # OS specific
4896 case $target_os in
4897     aix)
4898         SHFLAGS=-shared
4899         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4900         enabled shared && add_ldflags -Wl,-brtl
4901         arflags='-Xany -r -c'
4902         ;;
4903     android)
4904         disable symver
4905         enable section_data_rel_ro
4906         SLIB_INSTALL_NAME='$(SLIBNAME)'
4907         SLIB_INSTALL_LINKS=
4908         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4909         ;;
4910     haiku)
4911         prefix_default="/boot/common"
4912         network_extralibs="-lnetwork"
4913         host_extralibs=
4914         ;;
4915     sunos)
4916         SHFLAGS='-shared -Wl,-h,$$(@F)'
4917         enabled x86 && append SHFLAGS -mimpure-text
4918         network_extralibs="-lsocket -lnsl"
4919         add_cppflags -D__EXTENSIONS__
4920         # When using suncc to build, the Solaris linker will mark
4921         # an executable with each instruction set encountered by
4922         # the Solaris assembler.  As our libraries contain their own
4923         # guards for processor-specific code, instead suppress
4924         # generation of the HWCAPS ELF section on Solaris x86 only.
4925         enabled_all suncc x86 &&
4926             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4927             add_ldflags -Wl,-M,mapfile
4928         nm_default='nm -P -g'
4929         version_script='-M'
4930         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4931         ;;
4932     netbsd)
4933         disable symver
4934         oss_indev_extralibs="-lossaudio"
4935         oss_outdev_extralibs="-lossaudio"
4936         enabled gcc || check_ldflags -Wl,-zmuldefs
4937         ;;
4938     openbsd|bitrig)
4939         disable symver
4940         SHFLAGS='-shared'
4941         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4942         SLIB_INSTALL_LINKS=
4943         oss_indev_extralibs="-lossaudio"
4944         oss_outdev_extralibs="-lossaudio"