configure: remove libtls fallback check
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188
189 External library support:
190
191   Using any of the following switches will allow FFmpeg to link to the
192   corresponding external library. All the components depending on that library
193   will become enabled, if all their other dependencies are met and they are not
194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
195   libwavpack and allow the libwavpack encoder to be built, unless it is
196   specifically disabled with --disable-encoder=libwavpack.
197
198   Note that only the system libraries are auto-detected. All the other external
199   libraries must be explicitly enabled.
200
201   Also note that the following help text describes the purpose of the libraries
202   themselves, not all their features will necessarily be usable by FFmpeg.
203
204   --disable-alsa           disable ALSA support [autodetect]
205   --disable-appkit         disable Apple AppKit framework [autodetect]
206   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
207   --enable-avisynth        enable reading of AviSynth script files [no]
208   --disable-bzlib          disable bzlib [autodetect]
209   --disable-coreimage      disable Apple CoreImage framework [autodetect]
210   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
211   --enable-frei0r          enable frei0r video filtering [no]
212   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
213                            if openssl, librtmp or gmp is not used [no]
214   --enable-gmp             enable gmp, needed for rtmp(t)e support
215                            if openssl or librtmp is not used [no]
216   --enable-gnutls          enable gnutls, needed for https support
217                            if openssl or libtls is not used [no]
218   --disable-iconv          disable iconv [autodetect]
219   --enable-jni             enable JNI support [no]
220   --enable-ladspa          enable LADSPA audio filtering [no]
221   --enable-libass          enable libass subtitles rendering,
222                            needed for subtitles and ass filter [no]
223   --enable-libbluray       enable BluRay reading using libbluray [no]
224   --enable-libbs2b         enable bs2b DSP library [no]
225   --enable-libcaca         enable textual display using libcaca [no]
226   --enable-libcelt         enable CELT decoding via libcelt [no]
227   --enable-libcdio         enable audio CD grabbing with libcdio [no]
228   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
229                            and libraw1394 [no]
230   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
231   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
232   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
233   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
234   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
235   --enable-libgme          enable Game Music Emu via libgme [no]
236   --enable-libgsm          enable GSM de/encoding via libgsm [no]
237   --enable-libiec61883     enable iec61883 via libiec61883 [no]
238   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
239   --enable-libjack         enable JACK audio sound server [no]
240   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
241   --enable-libmodplug      enable ModPlug via libmodplug [no]
242   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
243   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
244   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
245   --enable-libopencv       enable video filtering via libopencv [no]
246   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
247   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
248   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
249   --enable-libopus         enable Opus de/encoding via libopus [no]
250   --enable-libpulse        enable Pulseaudio input via libpulse [no]
251   --enable-librsvg         enable SVG rasterization via librsvg [no]
252   --enable-librubberband   enable rubberband needed for rubberband filter [no]
253   --enable-librtmp         enable RTMP[E] support via librtmp [no]
254   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
255   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
256   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
257   --enable-libsoxr         enable Include libsoxr resampling [no]
258   --enable-libspeex        enable Speex de/encoding via libspeex [no]
259   --enable-libssh          enable SFTP protocol via libssh [no]
260   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
261   --enable-libtheora       enable Theora encoding via libtheora [no]
262   --enable-libtls          enable LibreSSL (via libtls), needed for https support
263                            if openssl or gnutls is not used [no]
264   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
265   --enable-libv4l2         enable libv4l2/v4l-utils [no]
266   --enable-libvidstab      enable video stabilization using vid.stab [no]
267   --enable-libvmaf         enable vmaf filter via libvmaf [no]
268   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
269   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
270                            native implementation exists [no]
271   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
272   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
273   --enable-libwebp         enable WebP encoding via libwebp [no]
274   --enable-libx264         enable H.264 encoding via x264 [no]
275   --enable-libx265         enable HEVC encoding via x265 [no]
276   --enable-libxavs         enable AVS encoding via xavs [no]
277   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
278   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
279   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
280   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
281   --enable-libxvid         enable Xvid encoding via xvidcore,
282                            native MPEG-4/Xvid encoder exists [no]
283   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
284   --enable-libzimg         enable z.lib, needed for zscale filter [no]
285   --enable-libzmq          enable message passing via libzmq [no]
286   --enable-libzvbi         enable teletext support via libzvbi [no]
287   --enable-lv2             enable LV2 audio filtering [no]
288   --disable-lzma           disable lzma [autodetect]
289   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
290   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
291   --enable-mediacodec      enable Android MediaCodec support [no]
292   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
293   --enable-openal          enable OpenAL 1.1 capture support [no]
294   --enable-opencl          enable OpenCL processing [no]
295   --enable-opengl          enable OpenGL rendering [no]
296   --enable-openssl         enable openssl, needed for https support
297                            if gnutls or libtls is not used [no]
298   --disable-sndio          disable sndio support [autodetect]
299   --disable-schannel       disable SChannel SSP, needed for TLS support on
300                            Windows if openssl and gnutls are not used [autodetect]
301   --disable-sdl2           disable sdl2 [autodetect]
302   --disable-securetransport disable Secure Transport, needed for TLS support
303                            on OSX if openssl and gnutls are not used [autodetect]
304   --disable-xlib           disable xlib [autodetect]
305   --disable-zlib           disable zlib [autodetect]
306
307   The following libraries provide various hardware acceleration features:
308   --disable-amf            disable AMF video encoding code [autodetect]
309   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
310   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
311   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
312   --disable-cuvid          disable Nvidia CUVID support [autodetect]
313   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
314   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
315   --enable-libdrm          enable DRM code (Linux) [no]
316   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
317   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
318   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
319   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
320   --disable-nvenc          disable Nvidia video encoding code [autodetect]
321   --enable-omx             enable OpenMAX IL code [no]
322   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
323   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
324   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
325   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
326   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
327   --disable-videotoolbox   disable VideoToolbox code [autodetect]
328
329 Toolchain options:
330   --arch=ARCH              select architecture [$arch]
331   --cpu=CPU                select the minimum required CPU (affects
332                            instruction selection, may crash on older CPUs)
333   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
334   --progs-suffix=SUFFIX    program name suffix []
335   --enable-cross-compile   assume a cross-compiler is used
336   --sysroot=PATH           root of cross-build tree
337   --sysinclude=PATH        location of cross-build system headers
338   --target-os=OS           compiler targets OS [$target_os]
339   --target-exec=CMD        command to run executables on target
340   --target-path=DIR        path to view of build directory on target
341   --target-samples=DIR     path to samples directory on target
342   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
343   --toolchain=NAME         set tool defaults according to NAME
344   --nm=NM                  use nm tool NM [$nm_default]
345   --ar=AR                  use archive tool AR [$ar_default]
346   --as=AS                  use assembler AS [$as_default]
347   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
348   --strip=STRIP            use strip tool STRIP [$strip_default]
349   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
350   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
351   --cc=CC                  use C compiler CC [$cc_default]
352   --cxx=CXX                use C compiler CXX [$cxx_default]
353   --objcc=OCC              use ObjC compiler OCC [$cc_default]
354   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
355   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
356   --ld=LD                  use linker LD [$ld_default]
357   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
358   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
359   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
360   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
361   --host-cc=HOSTCC         use host C compiler HOSTCC
362   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
363   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
364   --host-ld=HOSTLD         use host linker HOSTLD
365   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
366   --host-libs=HLIBS        use libs HLIBS when linking for host
367   --host-os=OS             compiler host OS [$target_os]
368   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
369   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
370   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
371   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
372   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
373   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
374   --extra-libs=ELIBS       add ELIBS [$ELIBS]
375   --extra-version=STRING   version string suffix []
376   --optflags=OPTFLAGS      override optimization-related compiler flags
377   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
378   --build-suffix=SUFFIX    library name suffix []
379   --enable-pic             build position-independent code
380   --enable-thumb           compile for Thumb instruction set
381   --enable-lto             use link-time optimization
382   --env="ENV=override"     override the environment variables
383
384 Advanced options (experts only):
385   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
386   --custom-allocator=NAME  use a supported custom allocator
387   --disable-symver         disable symbol versioning
388   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
389   --disable-safe-bitstream-reader
390                            disable buffer boundary checking in bitreaders
391                            (faster, but may crash)
392   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
393
394 Optimization options (experts only):
395   --disable-asm            disable all assembly optimizations
396   --disable-altivec        disable AltiVec optimizations
397   --disable-vsx            disable VSX optimizations
398   --disable-power8         disable POWER8 optimizations
399   --disable-amd3dnow       disable 3DNow! optimizations
400   --disable-amd3dnowext    disable 3DNow! extended optimizations
401   --disable-mmx            disable MMX optimizations
402   --disable-mmxext         disable MMXEXT optimizations
403   --disable-sse            disable SSE optimizations
404   --disable-sse2           disable SSE2 optimizations
405   --disable-sse3           disable SSE3 optimizations
406   --disable-ssse3          disable SSSE3 optimizations
407   --disable-sse4           disable SSE4 optimizations
408   --disable-sse42          disable SSE4.2 optimizations
409   --disable-avx            disable AVX optimizations
410   --disable-xop            disable XOP optimizations
411   --disable-fma3           disable FMA3 optimizations
412   --disable-fma4           disable FMA4 optimizations
413   --disable-avx2           disable AVX2 optimizations
414   --disable-aesni          disable AESNI optimizations
415   --disable-armv5te        disable armv5te optimizations
416   --disable-armv6          disable armv6 optimizations
417   --disable-armv6t2        disable armv6t2 optimizations
418   --disable-vfp            disable VFP optimizations
419   --disable-neon           disable NEON optimizations
420   --disable-inline-asm     disable use of inline assembly
421   --disable-x86asm         disable use of standalone x86 assembly
422   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
423   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
424   --disable-msa            disable MSA optimizations
425   --disable-mipsfpu        disable floating point MIPS optimizations
426   --disable-mmi            disable Loongson SIMD optimizations
427   --disable-fast-unaligned consider unaligned accesses slow
428
429 Developer options (useful when working on FFmpeg itself):
430   --disable-debug          disable debugging symbols
431   --enable-debug=LEVEL     set the debug level [$debuglevel]
432   --disable-optimizations  disable compiler optimizations
433   --enable-extra-warnings  enable more compiler warnings
434   --disable-stripping      disable stripping of executables and shared libraries
435   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
436                            2 causes a slowdown at runtime.
437   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
438   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
439                            leaks and errors, using the specified valgrind binary.
440                            Cannot be combined with --target-exec
441   --enable-ftrapv          Trap arithmetic overflows
442   --samples=PATH           location of test samples for FATE, if not set use
443                            \$FATE_SAMPLES at make invocation time.
444   --enable-neon-clobber-test check NEON registers for clobbering (should be
445                            used only for debugging purposes)
446   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
447                            should be used only for debugging purposes)
448   --enable-random          randomly enable/disable components
449   --disable-random
450   --enable-random=LIST     randomly enable/disable specific components or
451   --disable-random=LIST    component groups. LIST is a comma-separated list
452                            of NAME[:PROB] entries where NAME is a component
453                            (group) and PROB the probability associated with
454                            NAME (default 0.5).
455   --random-seed=VALUE      seed value for --enable/disable-random
456   --disable-valgrind-backtrace do not print a backtrace under Valgrind
457                            (only applies to --disable-optimizations builds)
458   --enable-osfuzz          Enable building fuzzer tool
459   --libfuzzer=PATH         path to libfuzzer
460   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
461                            in the name) of tests whose result is ignored
462   --enable-linux-perf      enable Linux Performance Monitor API
463
464 NOTE: Object files are built at the place where configure is launched.
465 EOF
466   exit 0
467 }
468
469 if test -t 1 && which tput >/dev/null 2>&1; then
470     ncolors=$(tput colors)
471     if test -n "$ncolors" && test $ncolors -ge 8; then
472         bold_color=$(tput bold)
473         warn_color=$(tput setaf 3)
474         error_color=$(tput setaf 1)
475         reset_color=$(tput sgr0)
476     fi
477     # 72 used instead of 80 since that's the default of pr
478     ncols=$(tput cols)
479 fi
480 : ${ncols:=72}
481
482 log(){
483     echo "$@" >> $logfile
484 }
485
486 log_file(){
487     log BEGIN $1
488     pr -n -t $1 >> $logfile
489     log END $1
490 }
491
492 warn(){
493     log "WARNING: $*"
494     WARNINGS="${WARNINGS}WARNING: $*\n"
495 }
496
497 die(){
498     log "$@"
499     echo "$error_color$bold_color$@$reset_color"
500     cat <<EOF
501
502 If you think configure made a mistake, make sure you are using the latest
503 version from Git.  If the latest version fails, report the problem to the
504 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
505 EOF
506     if disabled logging; then
507         cat <<EOF
508 Rerun configure with logging enabled (do not use --disable-logging), and
509 include the log this produces with your report.
510 EOF
511     else
512         cat <<EOF
513 Include the log file "$logfile" produced by configure as this will help
514 solve the problem.
515 EOF
516     fi
517     exit 1
518 }
519
520 # Avoid locale weirdness, besides we really just want to translate ASCII.
521 toupper(){
522     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
523 }
524
525 tolower(){
526     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
527 }
528
529 c_escape(){
530     echo "$*" | sed 's/["\\]/\\\0/g'
531 }
532
533 sh_quote(){
534     v=$(echo "$1" | sed "s/'/'\\\\''/g")
535     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
536     echo "$v"
537 }
538
539 cleanws(){
540     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
541 }
542
543 filter(){
544     pat=$1
545     shift
546     for v; do
547         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
548     done
549 }
550
551 filter_out(){
552     pat=$1
553     shift
554     for v; do
555         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
556     done
557 }
558
559 map(){
560     m=$1
561     shift
562     for v; do eval $m; done
563 }
564
565 add_suffix(){
566     suffix=$1
567     shift
568     for v; do echo ${v}${suffix}; done
569 }
570
571 set_all(){
572     value=$1
573     shift
574     for var in $*; do
575         eval $var=$value
576     done
577 }
578
579 set_weak(){
580     value=$1
581     shift
582     for var; do
583         eval : \${$var:=$value}
584     done
585 }
586
587 sanitize_var_name(){
588     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
589 }
590
591 set_sanitized(){
592     var=$1
593     shift
594     eval $(sanitize_var_name "$var")='$*'
595 }
596
597 get_sanitized(){
598     eval echo \$$(sanitize_var_name "$1")
599 }
600
601 pushvar(){
602     for pvar in $*; do
603         eval level=\${${pvar}_level:=0}
604         eval ${pvar}_${level}="\$$pvar"
605         eval ${pvar}_level=$(($level+1))
606     done
607 }
608
609 popvar(){
610     for pvar in $*; do
611         eval level=\${${pvar}_level:-0}
612         test $level = 0 && continue
613         eval level=$(($level-1))
614         eval $pvar="\${${pvar}_${level}}"
615         eval ${pvar}_level=$level
616         eval unset ${pvar}_${level}
617     done
618 }
619
620 request(){
621     for var in $*; do
622         eval ${var}_requested=yes
623         eval $var=
624     done
625 }
626
627 enable(){
628     set_all yes $*
629 }
630
631 disable(){
632     set_all no $*
633 }
634
635 enable_weak(){
636     set_weak yes $*
637 }
638
639 disable_weak(){
640     set_weak no $*
641 }
642
643 enable_sanitized(){
644     for var; do
645         enable $(sanitize_var_name $var)
646     done
647 }
648
649 disable_sanitized(){
650     for var; do
651         disable $(sanitize_var_name $var)
652     done
653 }
654
655 do_enable_deep(){
656     for var; do
657         enabled $var && continue
658         eval sel="\$${var}_select"
659         eval sgs="\$${var}_suggest"
660         pushvar var sgs
661         enable_deep $sel
662         popvar sgs
663         enable_deep_weak $sgs
664         popvar var
665     done
666 }
667
668 enable_deep(){
669     do_enable_deep $*
670     enable $*
671 }
672
673 enable_deep_weak(){
674     for var; do
675         disabled $var && continue
676         pushvar var
677         do_enable_deep $var
678         popvar var
679         enable_weak $var
680     done
681 }
682
683 requested(){
684     test "${1#!}" = "$1" && op="=" || op="!="
685     eval test "x\$${1#!}_requested" $op "xyes"
686 }
687
688 enabled(){
689     test "${1#!}" = "$1" && op="=" || op="!="
690     eval test "x\$${1#!}" $op "xyes"
691 }
692
693 disabled(){
694     test "${1#!}" = "$1" && op="=" || op="!="
695     eval test "x\$${1#!}" $op "xno"
696 }
697
698 enabled_all(){
699     for opt; do
700         enabled $opt || return 1
701     done
702 }
703
704 disabled_all(){
705     for opt; do
706         disabled $opt || return 1
707     done
708 }
709
710 enabled_any(){
711     for opt; do
712         enabled $opt && return 0
713     done
714 }
715
716 disabled_any(){
717     for opt; do
718         disabled $opt && return 0
719     done
720     return 1
721 }
722
723 set_default(){
724     for opt; do
725         eval : \${$opt:=\$${opt}_default}
726     done
727 }
728
729 is_in(){
730     value=$1
731     shift
732     for var in $*; do
733         [ $var = $value ] && return 0
734     done
735     return 1
736 }
737
738 check_deps(){
739     for cfg; do
740         enabled ${cfg}_checking && die "Circular dependency for $cfg."
741         disabled ${cfg}_checking && continue
742         enable ${cfg}_checking
743
744         eval dep_all="\$${cfg}_deps"
745         eval dep_any="\$${cfg}_deps_any"
746         eval dep_con="\$${cfg}_conflict"
747         eval dep_sel="\$${cfg}_select"
748         eval dep_sgs="\$${cfg}_suggest"
749         eval dep_ifa="\$${cfg}_if"
750         eval dep_ifn="\$${cfg}_if_any"
751
752         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
753         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
754         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
755
756         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
757         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
758         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
759         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
760         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
761         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
762
763         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
764
765         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
766             # filter out library deps, these do not belong in extralibs
767             is_in $dep $LIBRARY_LIST && continue
768             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
769         done
770
771         disable ${cfg}_checking
772     done
773 }
774
775 print_config(){
776     pfx=$1
777     files=$2
778     shift 2
779     map 'eval echo "$v \${$v:-no}"' "$@" |
780     awk "BEGIN { split(\"$files\", files) }
781         {
782             c = \"$pfx\" toupper(\$1);
783             v = \$2;
784             sub(/yes/, 1, v);
785             sub(/no/,  0, v);
786             for (f in files) {
787                 file = files[f];
788                 if (file ~ /\\.h\$/) {
789                     printf(\"#define %s %d\\n\", c, v) >>file;
790                 } else if (file ~ /\\.asm\$/) {
791                     printf(\"%%define %s %d\\n\", c, v) >>file;
792                 } else if (file ~ /\\.mak\$/) {
793                     n = -v ? \"\" : \"!\";
794                     printf(\"%s%s=yes\\n\", n, c) >>file;
795                 } else if (file ~ /\\.texi\$/) {
796                     pre = -v ? \"\" : \"@c \";
797                     yesno = \$2;
798                     c2 = tolower(c);
799                     gsub(/_/, \"-\", c2);
800                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
801                 }
802             }
803         }"
804 }
805
806 print_enabled(){
807     suf=$1
808     shift
809     for v; do
810         enabled $v && printf "%s\n" ${v%$suf}
811     done
812 }
813
814 append(){
815     var=$1
816     shift
817     eval "$var=\"\$$var $*\""
818 }
819
820 prepend(){
821     var=$1
822     shift
823     eval "$var=\"$* \$$var\""
824 }
825
826 unique(){
827     var=$1
828     uniq_list=""
829     for tok in $(eval echo \$$var); do
830         uniq_list="$(filter_out $tok $uniq_list) $tok"
831     done
832     eval "$var=\"${uniq_list}\""
833 }
834
835 resolve(){
836     var=$1
837     tmpvar=
838     for entry in $(eval echo \$$var); do
839         tmpvar="$tmpvar $(eval echo \$${entry})"
840     done
841     eval "$var=\"${tmpvar}\""
842 }
843
844 add_cppflags(){
845     append CPPFLAGS "$@"
846 }
847
848 add_cflags(){
849     append CFLAGS $($cflags_filter "$@")
850 }
851
852 add_cflags_headers(){
853     append CFLAGS_HEADERS $($cflags_filter "$@")
854 }
855
856 add_cxxflags(){
857     append CXXFLAGS $($cflags_filter "$@")
858 }
859
860 add_asflags(){
861     append ASFLAGS $($asflags_filter "$@")
862 }
863
864 add_objcflags(){
865     append OBJCFLAGS $($objcflags_filter "$@")
866 }
867
868 add_ldflags(){
869     append LDFLAGS $($ldflags_filter "$@")
870 }
871
872 add_ldexeflags(){
873     append LDEXEFLAGS $($ldflags_filter "$@")
874 }
875
876 add_ldsoflags(){
877     append LDSOFLAGS $($ldflags_filter "$@")
878 }
879
880 add_stripflags(){
881     append ASMSTRIPFLAGS "$@"
882 }
883
884 add_extralibs(){
885     prepend extralibs $($ldflags_filter "$@")
886 }
887
888 add_host_cppflags(){
889     append host_cppflags "$@"
890 }
891
892 add_host_cflags(){
893     append host_cflags $($host_cflags_filter "$@")
894 }
895
896 add_host_ldflags(){
897     append host_ldflags $($host_ldflags_filter "$@")
898 }
899
900 add_compat(){
901     append compat_objs $1
902     shift
903     map 'add_cppflags -D$v' "$@"
904 }
905
906 check_cmd(){
907     log "$@"
908     "$@" >> $logfile 2>&1
909 }
910
911 check_stat(){
912     log check_stat "$@"
913     stat "$1" >> $logfile 2>&1
914 }
915
916 cc_o(){
917     eval printf '%s\\n' $CC_O
918 }
919
920 cc_e(){
921     eval printf '%s\\n' $CC_E
922 }
923
924 check_cc(){
925     log check_cc "$@"
926     cat > $TMPC
927     log_file $TMPC
928     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
929 }
930
931 check_cxx(){
932     log check_cxx "$@"
933     cat > $TMPCPP
934     log_file $TMPCPP
935     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
936 }
937
938 check_objcc(){
939     log check_objcc "$@"
940     cat > $TMPM
941     log_file $TMPM
942     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
943 }
944
945 check_cpp(){
946     log check_cpp "$@"
947     cat > $TMPC
948     log_file $TMPC
949     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
950 }
951
952 as_o(){
953     eval printf '%s\\n' $AS_O
954 }
955
956 check_as(){
957     log check_as "$@"
958     cat > $TMPS
959     log_file $TMPS
960     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
961 }
962
963 check_inline_asm(){
964     log check_inline_asm "$@"
965     name="$1"
966     code="$2"
967     shift 2
968     disable $name
969     check_cc "$@" <<EOF && enable $name
970 void foo(void){ __asm__ volatile($code); }
971 EOF
972 }
973
974 check_inline_asm_flags(){
975     log check_inline_asm_flags "$@"
976     name="$1"
977     code="$2"
978     flags=''
979     shift 2
980     while [ "$1" != "" ]; do
981       append flags $1
982       shift
983     done;
984     disable $name
985     cat > $TMPC <<EOF
986 void foo(void){ __asm__ volatile($code); }
987 EOF
988     log_file $TMPC
989     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
990     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
991 }
992
993 check_insn(){
994     log check_insn "$@"
995     check_inline_asm ${1}_inline "\"$2\""
996     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
997 }
998
999 check_x86asm(){
1000     log check_x86asm "$@"
1001     echo "$1" > $TMPS
1002     log_file $TMPS
1003     shift 1
1004     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1005 }
1006
1007 ld_o(){
1008     eval printf '%s\\n' $LD_O
1009 }
1010
1011 check_ld(){
1012     log check_ld "$@"
1013     type=$1
1014     shift 1
1015     flags=$(filter_out '-l*|*.so' $@)
1016     libs=$(filter '-l*|*.so' $@)
1017     check_$type $($cflags_filter $flags) || return
1018     flags=$($ldflags_filter $flags)
1019     libs=$($ldflags_filter $libs)
1020     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1021 }
1022
1023 print_include(){
1024     hdr=$1
1025     test "${hdr%.h}" = "${hdr}" &&
1026         echo "#include $hdr"    ||
1027         echo "#include <$hdr>"
1028 }
1029
1030 check_code(){
1031     log check_code "$@"
1032     check=$1
1033     headers=$2
1034     code=$3
1035     shift 3
1036     {
1037         for hdr in $headers; do
1038             print_include $hdr
1039         done
1040         echo "int main(void) { $code; return 0; }"
1041     } | check_$check "$@"
1042 }
1043
1044 check_cppflags(){
1045     log check_cppflags "$@"
1046     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1047 #include <stdlib.h>
1048 EOF
1049 }
1050
1051 test_cflags(){
1052     log test_cflags "$@"
1053     set -- $($cflags_filter "$@")
1054     check_cc "$@" <<EOF
1055 int x;
1056 EOF
1057 }
1058
1059 check_cflags(){
1060     log check_cflags "$@"
1061     test_cflags "$@" && add_cflags "$@"
1062 }
1063
1064 check_cxxflags(){
1065     log check_cxxflags "$@"
1066     set -- $($cflags_filter "$@")
1067     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1068 int x;
1069 EOF
1070 }
1071
1072 test_objcflags(){
1073     log test_objcflags "$@"
1074     set -- $($objcflags_filter "$@")
1075     check_objcc "$@" <<EOF
1076 int x;
1077 EOF
1078 }
1079
1080 check_objcflags(){
1081     log check_objcflags "$@"
1082     test_objcflags "$@" && add_objcflags "$@"
1083 }
1084
1085 test_ldflags(){
1086     log test_ldflags "$@"
1087     set -- $($ldflags_filter "$@")
1088     check_ld "cc" "$@" <<EOF
1089 int main(void){ return 0; }
1090 EOF
1091 }
1092
1093 check_ldflags(){
1094     log check_ldflags "$@"
1095     test_ldflags "$@" && add_ldflags "$@"
1096 }
1097
1098 test_stripflags(){
1099     log test_stripflags "$@"
1100     # call check_cc to get a fresh TMPO
1101     check_cc <<EOF
1102 int main(void) { return 0; }
1103 EOF
1104     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1105 }
1106
1107 check_stripflags(){
1108     log check_stripflags "$@"
1109     test_stripflags "$@" && add_stripflags "$@"
1110 }
1111
1112 check_header(){
1113     log check_header "$@"
1114     headers=$1
1115     shift
1116     disable_sanitized $headers
1117     {
1118         for hdr in $headers; do
1119             print_include $hdr
1120         done
1121         echo "int x;"
1122     } | check_cpp "$@" && enable_sanitized $headers
1123 }
1124
1125 check_header_objcc(){
1126     log check_header_objcc "$@"
1127     rm -f -- "$TMPO"
1128     header=$1
1129     shift
1130     disable_sanitized $header
1131     {
1132        echo "#include <$header>"
1133        echo "int main(void) { return 0; }"
1134     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1135 }
1136
1137 check_apple_framework(){
1138     log check_apple_framework "$@"
1139     framework="$1"
1140     name="$(tolower $framework)"
1141     header="${framework}/${framework}.h"
1142     disable $name
1143     check_header_objcc $header &&
1144         enable $name && eval ${name}_extralibs='"-framework $framework"'
1145 }
1146
1147 check_func(){
1148     log check_func "$@"
1149     func=$1
1150     shift
1151     disable $func
1152     check_ld "cc" "$@" <<EOF && enable $func
1153 extern int $func();
1154 int main(void){ $func(); }
1155 EOF
1156 }
1157
1158 check_complexfunc(){
1159     log check_complexfunc "$@"
1160     func=$1
1161     narg=$2
1162     shift 2
1163     test $narg = 2 && args="f, g" || args="f * I"
1164     disable $func
1165     check_ld "cc" "$@" <<EOF && enable $func
1166 #include <complex.h>
1167 #include <math.h>
1168 float foo(complex float f, complex float g) { return $func($args); }
1169 int main(void){ return (int) foo; }
1170 EOF
1171 }
1172
1173 check_mathfunc(){
1174     log check_mathfunc "$@"
1175     func=$1
1176     narg=$2
1177     shift 2
1178     test $narg = 2 && args="f, g" || args="f"
1179     disable $func
1180     check_ld "cc" "$@" <<EOF && enable $func
1181 #include <math.h>
1182 float foo(float f, float g) { return $func($args); }
1183 int main(void){ return (int) foo; }
1184 EOF
1185 }
1186
1187 check_func_headers(){
1188     log check_func_headers "$@"
1189     headers=$1
1190     funcs=$2
1191     shift 2
1192     {
1193         for hdr in $headers; do
1194             print_include $hdr
1195         done
1196         echo "#include <stdint.h>"
1197         for func in $funcs; do
1198             echo "long check_$func(void) { return (long) $func; }"
1199         done
1200         echo "int main(void) { int ret = 0;"
1201         # LTO could optimize out the test functions without this
1202         for func in $funcs; do
1203             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1204         done
1205         echo "return ret; }"
1206     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1207 }
1208
1209 check_class_headers_cpp(){
1210     log check_class_headers_cpp "$@"
1211     headers=$1
1212     classes=$2
1213     shift 2
1214     {
1215         for hdr in $headers; do
1216             echo "#include <$hdr>"
1217         done
1218         echo "int main(void) { "
1219         i=1
1220         for class in $classes; do
1221             echo "$class obj$i;"
1222             i=$(expr $i + 1)
1223         done
1224         echo "return 0; }"
1225     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1226 }
1227
1228 check_cpp_condition(){
1229     log check_cpp_condition "$@"
1230     header=$1
1231     condition=$2
1232     shift 2
1233     check_cpp "$@" <<EOF
1234 #include <$header>
1235 #if !($condition)
1236 #error "unsatisfied condition: $condition"
1237 #endif
1238 EOF
1239 }
1240
1241 test_cflags_cc(){
1242     log test_cflags_cc "$@"
1243     flags=$1
1244     header=$2
1245     condition=$3
1246     shift 3
1247     set -- $($cflags_filter "$flags")
1248     check_cc "$@" <<EOF
1249 #include <$header>
1250 #if !($condition)
1251 #error "unsatisfied condition: $condition"
1252 #endif
1253 EOF
1254 }
1255
1256 check_lib(){
1257     log check_lib "$@"
1258     name="$1"
1259     headers="$2"
1260     funcs="$3"
1261     shift 3
1262     disable $name
1263     check_func_headers "$headers" "$funcs" "$@" &&
1264         enable $name && eval ${name}_extralibs="\$@"
1265 }
1266
1267 check_lib_cpp(){
1268     log check_lib_cpp "$@"
1269     name="$1"
1270     headers="$2"
1271     classes="$3"
1272     shift 3
1273     disable $name
1274     check_class_headers_cpp "$headers" "$classes" "$@" &&
1275         enable $name && eval ${name}_extralibs="\$@"
1276 }
1277
1278 test_pkg_config(){
1279     log test_pkg_config "$@"
1280     name="$1"
1281     pkg_version="$2"
1282     pkg="${2%% *}"
1283     headers="$3"
1284     funcs="$4"
1285     shift 4
1286     disable $name
1287     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1288     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1289     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1290     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1291         enable $name &&
1292         set_sanitized "${name}_cflags"    $pkg_cflags &&
1293         set_sanitized "${name}_extralibs" $pkg_libs
1294 }
1295
1296 check_pkg_config(){
1297     log check_pkg_config "$@"
1298     name="$1"
1299     test_pkg_config "$@" &&
1300         eval add_cflags \$${name}_cflags
1301 }
1302
1303 check_exec(){
1304     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1305 }
1306
1307 check_exec_crash(){
1308     log check_exec_crash "$@"
1309     code=$(cat)
1310
1311     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1312     # are safe but may not be available everywhere.  Thus we use
1313     # raise(SIGTERM) instead.  The check is run in a subshell so we
1314     # can redirect the "Terminated" message from the shell.  SIGBUS
1315     # is not defined by standard C so it is used conditionally.
1316
1317     (check_exec "$@") >> $logfile 2>&1 <<EOF
1318 #include <signal.h>
1319 static void sighandler(int sig){
1320     raise(SIGTERM);
1321 }
1322 int foo(void){
1323     $code
1324 }
1325 int (*func_ptr)(void) = foo;
1326 int main(void){
1327     signal(SIGILL, sighandler);
1328     signal(SIGFPE, sighandler);
1329     signal(SIGSEGV, sighandler);
1330 #ifdef SIGBUS
1331     signal(SIGBUS, sighandler);
1332 #endif
1333     return func_ptr();
1334 }
1335 EOF
1336 }
1337
1338 check_type(){
1339     log check_type "$@"
1340     headers=$1
1341     type=$2
1342     shift 2
1343     disable_sanitized "$type"
1344     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1345 }
1346
1347 check_struct(){
1348     log check_struct "$@"
1349     headers=$1
1350     struct=$2
1351     member=$3
1352     shift 3
1353     disable_sanitized "${struct}_${member}"
1354     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1355         enable_sanitized "${struct}_${member}"
1356 }
1357
1358 check_builtin(){
1359     log check_builtin "$@"
1360     name=$1
1361     headers=$2
1362     builtin=$3
1363     shift 3
1364     disable "$name"
1365     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1366 }
1367
1368 check_compile_assert(){
1369     log check_compile_assert "$@"
1370     name=$1
1371     headers=$2
1372     condition=$3
1373     shift 3
1374     disable "$name"
1375     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1376 }
1377
1378 require(){
1379     log require "$@"
1380     name_version="$1"
1381     name="${1%% *}"
1382     headers="$2"
1383     func="$3"
1384     shift 3
1385     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1386 }
1387
1388 require_cpp(){
1389     name="$1"
1390     headers="$2"
1391     classes="$3"
1392     shift 3
1393     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1394 }
1395
1396 require_header(){
1397     log require_header "$@"
1398     headers="$1"
1399     shift
1400     check_header "$headers" "$@" || die "ERROR: $headers not found"
1401 }
1402
1403 require_cpp_condition(){
1404     log require_cpp_condition "$@"
1405     header="$1"
1406     condition="$2"
1407     shift 2
1408     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1409 }
1410
1411 require_pkg_config(){
1412     log require_pkg_config "$@"
1413     pkg_version="$2"
1414     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1415 }
1416
1417 hostcc_e(){
1418     eval printf '%s\\n' $HOSTCC_E
1419 }
1420
1421 hostcc_o(){
1422     eval printf '%s\\n' $HOSTCC_O
1423 }
1424
1425 check_host_cc(){
1426     log check_host_cc "$@"
1427     cat > $TMPC
1428     log_file $TMPC
1429     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1430 }
1431
1432 check_host_cpp(){
1433     log check_host_cpp "$@"
1434     cat > $TMPC
1435     log_file $TMPC
1436     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1437 }
1438
1439 check_host_cppflags(){
1440     log check_host_cppflags "$@"
1441     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1442 #include <stdlib.h>
1443 EOF
1444 }
1445
1446 check_host_cflags(){
1447     log check_host_cflags "$@"
1448     set -- $($host_cflags_filter "$@")
1449     check_host_cc "$@" <<EOF && append host_cflags "$@"
1450 int x;
1451 EOF
1452 }
1453
1454 check_host_cpp_condition(){
1455     log check_host_cpp_condition "$@"
1456     header=$1
1457     condition=$2
1458     shift 2
1459     check_host_cpp "$@" <<EOF
1460 #include <$header>
1461 #if !($condition)
1462 #error "unsatisfied condition: $condition"
1463 #endif
1464 EOF
1465 }
1466
1467 cp_if_changed(){
1468     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1469     mkdir -p "$(dirname $2)"
1470     cp -f "$1" "$2"
1471 }
1472
1473 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1474 # system-dependent things.
1475
1476 AVCODEC_COMPONENTS="
1477     bsfs
1478     decoders
1479     encoders
1480     hwaccels
1481     parsers
1482 "
1483
1484 AVDEVICE_COMPONENTS="
1485     indevs
1486     outdevs
1487 "
1488
1489 AVFILTER_COMPONENTS="
1490     filters
1491 "
1492
1493 AVFORMAT_COMPONENTS="
1494     demuxers
1495     muxers
1496     protocols
1497 "
1498
1499 COMPONENT_LIST="
1500     $AVCODEC_COMPONENTS
1501     $AVDEVICE_COMPONENTS
1502     $AVFILTER_COMPONENTS
1503     $AVFORMAT_COMPONENTS
1504 "
1505
1506 EXAMPLE_LIST="
1507     avio_dir_cmd_example
1508     avio_reading_example
1509     decode_audio_example
1510     decode_video_example
1511     demuxing_decoding_example
1512     encode_audio_example
1513     encode_video_example
1514     extract_mvs_example
1515     filter_audio_example
1516     filtering_audio_example
1517     filtering_video_example
1518     http_multiclient_example
1519     hw_decode_example
1520     metadata_example
1521     muxing_example
1522     qsvdec_example
1523     remuxing_example
1524     resampling_audio_example
1525     scaling_video_example
1526     transcode_aac_example
1527     transcoding_example
1528     vaapi_encode_example
1529 "
1530
1531 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1532     alsa
1533     appkit
1534     avfoundation
1535     bzlib
1536     coreimage
1537     iconv
1538     libxcb
1539     libxcb_shm
1540     libxcb_shape
1541     libxcb_xfixes
1542     lzma
1543     schannel
1544     sdl2
1545     securetransport
1546     sndio
1547     xlib
1548     zlib
1549 "
1550
1551 EXTERNAL_LIBRARY_GPL_LIST="
1552     avisynth
1553     frei0r
1554     libcdio
1555     librubberband
1556     libvidstab
1557     libx264
1558     libx265
1559     libxavs
1560     libxvid
1561 "
1562
1563 EXTERNAL_LIBRARY_NONFREE_LIST="
1564     decklink
1565     libndi_newtek
1566     libfdk_aac
1567     openssl
1568     libtls
1569 "
1570
1571 EXTERNAL_LIBRARY_VERSION3_LIST="
1572     gmp
1573     libopencore_amrnb
1574     libopencore_amrwb
1575     libvmaf
1576     libvo_amrwbenc
1577     rkmpp
1578 "
1579
1580 EXTERNAL_LIBRARY_GPLV3_LIST="
1581     libsmbclient
1582 "
1583
1584 EXTERNAL_LIBRARY_LIST="
1585     $EXTERNAL_LIBRARY_GPL_LIST
1586     $EXTERNAL_LIBRARY_NONFREE_LIST
1587     $EXTERNAL_LIBRARY_VERSION3_LIST
1588     $EXTERNAL_LIBRARY_GPLV3_LIST
1589     chromaprint
1590     gcrypt
1591     gnutls
1592     jni
1593     ladspa
1594     libass
1595     libbluray
1596     libbs2b
1597     libcaca
1598     libcelt
1599     libdc1394
1600     libdrm
1601     libflite
1602     libfontconfig
1603     libfreetype
1604     libfribidi
1605     libgme
1606     libgsm
1607     libiec61883
1608     libilbc
1609     libjack
1610     libkvazaar
1611     libmodplug
1612     libmp3lame
1613     libmysofa
1614     libopencv
1615     libopenh264
1616     libopenjpeg
1617     libopenmpt
1618     libopus
1619     libpulse
1620     librsvg
1621     librtmp
1622     libshine
1623     libsmbclient
1624     libsnappy
1625     libsoxr
1626     libspeex
1627     libssh
1628     libtesseract
1629     libtheora
1630     libtwolame
1631     libv4l2
1632     libvorbis
1633     libvpx
1634     libwavpack
1635     libwebp
1636     libxml2
1637     libzimg
1638     libzmq
1639     libzvbi
1640     lv2
1641     mediacodec
1642     openal
1643     opengl
1644 "
1645
1646 HWACCEL_AUTODETECT_LIBRARY_LIST="
1647     amf
1648     audiotoolbox
1649     crystalhd
1650     cuda
1651     cuvid
1652     d3d11va
1653     dxva2
1654     nvdec
1655     nvenc
1656     vaapi
1657     vdpau
1658     videotoolbox
1659     v4l2_m2m
1660     xvmc
1661 "
1662
1663 # catchall list of things that require external libs to link
1664 EXTRALIBS_LIST="
1665     cpu_init
1666     cws2fws
1667 "
1668
1669 HWACCEL_LIBRARY_NONFREE_LIST="
1670     cuda_sdk
1671     libnpp
1672 "
1673
1674 HWACCEL_LIBRARY_LIST="
1675     $HWACCEL_LIBRARY_NONFREE_LIST
1676     libmfx
1677     mmal
1678     omx
1679     opencl
1680 "
1681
1682 DOCUMENT_LIST="
1683     doc
1684     htmlpages
1685     manpages
1686     podpages
1687     txtpages
1688 "
1689
1690 FEATURE_LIST="
1691     ftrapv
1692     gray
1693     hardcoded_tables
1694     omx_rpi
1695     runtime_cpudetect
1696     safe_bitstream_reader
1697     shared
1698     small
1699     static
1700     swscale_alpha
1701 "
1702
1703 LIBRARY_LIST="
1704     avcodec
1705     avdevice
1706     avfilter
1707     avformat
1708     avresample
1709     avutil
1710     postproc
1711     swresample
1712     swscale
1713 "
1714
1715 LICENSE_LIST="
1716     gpl
1717     nonfree
1718     version3
1719 "
1720
1721 PROGRAM_LIST="
1722     ffplay
1723     ffprobe
1724     ffserver
1725     ffmpeg
1726 "
1727
1728 SUBSYSTEM_LIST="
1729     dct
1730     dwt
1731     error_resilience
1732     faan
1733     fast_unaligned
1734     fft
1735     lsp
1736     lzo
1737     mdct
1738     pixelutils
1739     network
1740     rdft
1741 "
1742
1743 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1744 CONFIG_LIST="
1745     $DOCUMENT_LIST
1746     $EXAMPLE_LIST
1747     $EXTERNAL_LIBRARY_LIST
1748     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1749     $HWACCEL_LIBRARY_LIST
1750     $HWACCEL_AUTODETECT_LIBRARY_LIST
1751     $FEATURE_LIST
1752     $LICENSE_LIST
1753     $LIBRARY_LIST
1754     $PROGRAM_LIST
1755     $SUBSYSTEM_LIST
1756     autodetect
1757     fontconfig
1758     linux_perf
1759     memory_poisoning
1760     neon_clobber_test
1761     ossfuzz
1762     pic
1763     thumb
1764     valgrind_backtrace
1765     xmm_clobber_test
1766     $COMPONENT_LIST
1767 "
1768
1769 THREADS_LIST="
1770     pthreads
1771     os2threads
1772     w32threads
1773 "
1774
1775 ATOMICS_LIST="
1776     atomics_gcc
1777     atomics_suncc
1778     atomics_win32
1779 "
1780
1781 AUTODETECT_LIBS="
1782     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1783     $HWACCEL_AUTODETECT_LIBRARY_LIST
1784     $THREADS_LIST
1785 "
1786
1787 ARCH_LIST="
1788     aarch64
1789     alpha
1790     arm
1791     avr32
1792     avr32_ap
1793     avr32_uc
1794     bfin
1795     ia64
1796     m68k
1797     mips
1798     mips64
1799     parisc
1800     ppc
1801     ppc64
1802     s390
1803     sh4
1804     sparc
1805     sparc64
1806     tilegx
1807     tilepro
1808     tomi
1809     x86
1810     x86_32
1811     x86_64
1812 "
1813
1814 ARCH_EXT_LIST_ARM="
1815     armv5te
1816     armv6
1817     armv6t2
1818     armv8
1819     neon
1820     vfp
1821     vfpv3
1822     setend
1823 "
1824
1825 ARCH_EXT_LIST_MIPS="
1826     mipsfpu
1827     mips32r2
1828     mips32r5
1829     mips64r2
1830     mips32r6
1831     mips64r6
1832     mipsdsp
1833     mipsdspr2
1834     msa
1835 "
1836
1837 ARCH_EXT_LIST_LOONGSON="
1838     loongson2
1839     loongson3
1840     mmi
1841 "
1842
1843 ARCH_EXT_LIST_X86_SIMD="
1844     aesni
1845     amd3dnow
1846     amd3dnowext
1847     avx
1848     avx2
1849     fma3
1850     fma4
1851     mmx
1852     mmxext
1853     sse
1854     sse2
1855     sse3
1856     sse4
1857     sse42
1858     ssse3
1859     xop
1860 "
1861
1862 ARCH_EXT_LIST_PPC="
1863     altivec
1864     dcbzl
1865     ldbrx
1866     power8
1867     ppc4xx
1868     vsx
1869 "
1870
1871 ARCH_EXT_LIST_X86="
1872     $ARCH_EXT_LIST_X86_SIMD
1873     cpunop
1874     i686
1875 "
1876
1877 ARCH_EXT_LIST="
1878     $ARCH_EXT_LIST_ARM
1879     $ARCH_EXT_LIST_PPC
1880     $ARCH_EXT_LIST_X86
1881     $ARCH_EXT_LIST_MIPS
1882     $ARCH_EXT_LIST_LOONGSON
1883 "
1884
1885 ARCH_FEATURES="
1886     aligned_stack
1887     fast_64bit
1888     fast_clz
1889     fast_cmov
1890     local_aligned
1891     simd_align_16
1892     simd_align_32
1893 "
1894
1895 BUILTIN_LIST="
1896     atomic_cas_ptr
1897     machine_rw_barrier
1898     MemoryBarrier
1899     mm_empty
1900     rdtsc
1901     sarestart
1902     sem_timedwait
1903     sync_val_compare_and_swap
1904 "
1905 HAVE_LIST_CMDLINE="
1906     inline_asm
1907     symver
1908     x86asm
1909 "
1910
1911 HAVE_LIST_PUB="
1912     bigendian
1913     fast_unaligned
1914 "
1915
1916 HEADERS_LIST="
1917     arpa_inet_h
1918     asm_types_h
1919     cdio_paranoia_h
1920     cdio_paranoia_paranoia_h
1921     cuda_h
1922     dispatch_dispatch_h
1923     dev_bktr_ioctl_bt848_h
1924     dev_bktr_ioctl_meteor_h
1925     dev_ic_bt8xx_h
1926     dev_video_bktr_ioctl_bt848_h
1927     dev_video_meteor_ioctl_meteor_h
1928     direct_h
1929     dirent_h
1930     dxgidebug_h
1931     dxva_h
1932     ES2_gl_h
1933     gsm_h
1934     io_h
1935     machine_ioctl_bt848_h
1936     machine_ioctl_meteor_h
1937     malloc_h
1938     opencv2_core_core_c_h
1939     OpenGL_gl3_h
1940     poll_h
1941     sys_param_h
1942     sys_resource_h
1943     sys_select_h
1944     sys_soundcard_h
1945     sys_time_h
1946     sys_un_h
1947     sys_videoio_h
1948     termios_h
1949     udplite_h
1950     unistd_h
1951     valgrind_valgrind_h
1952     windows_h
1953     winsock2_h
1954 "
1955
1956 INTRINSICS_LIST="
1957     intrinsics_neon
1958 "
1959
1960 COMPLEX_FUNCS="
1961     cabs
1962     cexp
1963 "
1964
1965 MATH_FUNCS="
1966     atanf
1967     atan2f
1968     cbrt
1969     cbrtf
1970     copysign
1971     cosf
1972     erf
1973     exp2
1974     exp2f
1975     expf
1976     hypot
1977     isfinite
1978     isinf
1979     isnan
1980     ldexpf
1981     llrint
1982     llrintf
1983     log2
1984     log2f
1985     log10f
1986     lrint
1987     lrintf
1988     powf
1989     rint
1990     round
1991     roundf
1992     sinf
1993     trunc
1994     truncf
1995 "
1996
1997 SYSTEM_FEATURES="
1998     atomics_native
1999     dos_paths
2000     libc_msvcrt
2001     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2002     section_data_rel_ro
2003     threads
2004     uwp
2005     winrt
2006 "
2007
2008 SYSTEM_FUNCS="
2009     access
2010     aligned_malloc
2011     arc4random
2012     clock_gettime
2013     closesocket
2014     CommandLineToArgvW
2015     fcntl
2016     getaddrinfo
2017     gethrtime
2018     getopt
2019     GetProcessAffinityMask
2020     GetProcessMemoryInfo
2021     GetProcessTimes
2022     getrusage
2023     GetSystemTimeAsFileTime
2024     gettimeofday
2025     glob
2026     glXGetProcAddress
2027     gmtime_r
2028     inet_aton
2029     isatty
2030     kbhit
2031     localtime_r
2032     lstat
2033     lzo1x_999_compress
2034     mach_absolute_time
2035     MapViewOfFile
2036     memalign
2037     mkstemp
2038     mmap
2039     mprotect
2040     nanosleep
2041     PeekNamedPipe
2042     posix_memalign
2043     pthread_cancel
2044     sched_getaffinity
2045     SecItemImport
2046     SetConsoleTextAttribute
2047     SetConsoleCtrlHandler
2048     setmode
2049     setrlimit
2050     Sleep
2051     strerror_r
2052     sysconf
2053     sysctl
2054     usleep
2055     UTGetOSTypeFromString
2056     VirtualAlloc
2057     wglGetProcAddress
2058 "
2059
2060 SYSTEM_LIBRARIES="
2061     vaapi_drm
2062     vaapi_x11
2063     vdpau_x11
2064     wincrypt
2065 "
2066
2067 TOOLCHAIN_FEATURES="
2068     as_arch_directive
2069     as_fpu_directive
2070     as_func
2071     as_object_arch
2072     asm_mod_q
2073     blocks_extension
2074     ebp_available
2075     ebx_available
2076     gnu_as
2077     gnu_windres
2078     ibm_asm
2079     inline_asm_direct_symbol_refs
2080     inline_asm_labels
2081     inline_asm_nonlocal_labels
2082     pragma_deprecated
2083     rsync_contimeout
2084     symver_asm_label
2085     symver_gnu_asm
2086     vfp_args
2087     xform_asm
2088     xmm_clobbers
2089 "
2090
2091 TYPES_LIST="
2092     CONDITION_VARIABLE_Ptr
2093     kCMVideoCodecType_HEVC
2094     socklen_t
2095     struct_addrinfo
2096     struct_group_source_req
2097     struct_ip_mreq_source
2098     struct_ipv6_mreq
2099     struct_msghdr_msg_flags
2100     struct_pollfd
2101     struct_rusage_ru_maxrss
2102     struct_sctp_event_subscribe
2103     struct_sockaddr_in6
2104     struct_sockaddr_sa_len
2105     struct_sockaddr_storage
2106     struct_stat_st_mtim_tv_nsec
2107     struct_v4l2_frmivalenum_discrete
2108 "
2109
2110 HAVE_LIST="
2111     $ARCH_EXT_LIST
2112     $(add_suffix _external $ARCH_EXT_LIST)
2113     $(add_suffix _inline   $ARCH_EXT_LIST)
2114     $ARCH_FEATURES
2115     $ATOMICS_LIST
2116     $BUILTIN_LIST
2117     $COMPLEX_FUNCS
2118     $HAVE_LIST_CMDLINE
2119     $HAVE_LIST_PUB
2120     $HEADERS_LIST
2121     $INTRINSICS_LIST
2122     $MATH_FUNCS
2123     $SYSTEM_FEATURES
2124     $SYSTEM_FUNCS
2125     $SYSTEM_LIBRARIES
2126     $THREADS_LIST
2127     $TOOLCHAIN_FEATURES
2128     $TYPES_LIST
2129     makeinfo
2130     makeinfo_html
2131     opencl_d3d11
2132     opencl_drm_arm
2133     opencl_dxva2
2134     opencl_vaapi_beignet
2135     opencl_vaapi_intel_media
2136     perl
2137     pod2man
2138     texi2html
2139 "
2140
2141 # options emitted with CONFIG_ prefix but not available on the command line
2142 CONFIG_EXTRA="
2143     aandcttables
2144     ac3dsp
2145     adts_header
2146     audio_frame_queue
2147     audiodsp
2148     blockdsp
2149     bswapdsp
2150     cabac
2151     cbs
2152     cbs_h264
2153     cbs_h265
2154     cbs_mpeg2
2155     dirac_parse
2156     dvprofile
2157     exif
2158     faandct
2159     faanidct
2160     fdctdsp
2161     flacdsp
2162     fmtconvert
2163     frame_thread_encoder
2164     g722dsp
2165     golomb
2166     gplv3
2167     h263dsp
2168     h264chroma
2169     h264dsp
2170     h264parse
2171     h264pred
2172     h264qpel
2173     hevcparse
2174     hpeldsp
2175     huffman
2176     huffyuvdsp
2177     huffyuvencdsp
2178     idctdsp
2179     iirfilter
2180     mdct15
2181     intrax8
2182     iso_media
2183     ividsp
2184     jpegtables
2185     lgplv3
2186     libx262
2187     llauddsp
2188     llviddsp
2189     llvidencdsp
2190     lpc
2191     lzf
2192     me_cmp
2193     mpeg_er
2194     mpegaudio
2195     mpegaudiodsp
2196     mpegaudioheader
2197     mpegvideo
2198     mpegvideoenc
2199     mss34dsp
2200     pixblockdsp
2201     qpeldsp
2202     qsv
2203     qsvdec
2204     qsvenc
2205     qsvvpp
2206     rangecoder
2207     riffdec
2208     riffenc
2209     rtpdec
2210     rtpenc_chain
2211     rv34dsp
2212     sinewin
2213     snappy
2214     srtp
2215     startcode
2216     texturedsp
2217     texturedspenc
2218     tpeldsp
2219     vaapi_1
2220     vaapi_encode
2221     vc1dsp
2222     videodsp
2223     vp3dsp
2224     vp56dsp
2225     vp8dsp
2226     wma_freqs
2227     wmv2dsp
2228 "
2229
2230 CMDLINE_SELECT="
2231     $ARCH_EXT_LIST
2232     $CONFIG_LIST
2233     $HAVE_LIST_CMDLINE
2234     $THREADS_LIST
2235     asm
2236     cross_compile
2237     debug
2238     extra_warnings
2239     logging
2240     lto
2241     optimizations
2242     rpath
2243     stripping
2244 "
2245
2246 PATHS_LIST="
2247     bindir
2248     datadir
2249     docdir
2250     incdir
2251     libdir
2252     mandir
2253     pkgconfigdir
2254     prefix
2255     shlibdir
2256     install_name_dir
2257 "
2258
2259 CMDLINE_SET="
2260     $PATHS_LIST
2261     ar
2262     arch
2263     as
2264     assert_level
2265     build_suffix
2266     cc
2267     objcc
2268     cpu
2269     cross_prefix
2270     custom_allocator
2271     cxx
2272     dep_cc
2273     doxygen
2274     env
2275     extra_version
2276     gas
2277     host_cc
2278     host_cflags
2279     host_extralibs
2280     host_ld
2281     host_ldflags
2282     host_os
2283     ignore_tests
2284     install
2285     ld
2286     ln_s
2287     logfile
2288     malloc_prefix
2289     nm
2290     optflags
2291     nvccflags
2292     pkg_config
2293     pkg_config_flags
2294     progs_suffix
2295     random_seed
2296     ranlib
2297     samples
2298     strip
2299     sws_max_filter_size
2300     sysinclude
2301     sysroot
2302     target_exec
2303     target_os
2304     target_path
2305     target_samples
2306     tempprefix
2307     toolchain
2308     valgrind
2309     x86asmexe
2310 "
2311
2312 CMDLINE_APPEND="
2313     extra_cflags
2314     extra_cxxflags
2315     extra_objcflags
2316     host_cppflags
2317 "
2318
2319 # code dependency declarations
2320
2321 # architecture extensions
2322
2323 armv5te_deps="arm"
2324 armv6_deps="arm"
2325 armv6t2_deps="arm"
2326 armv8_deps="aarch64"
2327 neon_deps_any="aarch64 arm"
2328 intrinsics_neon_deps="neon"
2329 vfp_deps_any="aarch64 arm"
2330 vfpv3_deps="vfp"
2331 setend_deps="arm"
2332
2333 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2334
2335 altivec_deps="ppc"
2336 dcbzl_deps="ppc"
2337 ldbrx_deps="ppc"
2338 ppc4xx_deps="ppc"
2339 vsx_deps="altivec"
2340 power8_deps="vsx"
2341
2342 loongson2_deps="mips"
2343 loongson3_deps="mips"
2344 mips32r2_deps="mips"
2345 mips32r5_deps="mips"
2346 mips32r6_deps="mips"
2347 mips64r2_deps="mips"
2348 mips64r6_deps="mips"
2349 mipsfpu_deps="mips"
2350 mipsdsp_deps="mips"
2351 mipsdspr2_deps="mips"
2352 mmi_deps="mips"
2353 msa_deps="mipsfpu"
2354
2355 cpunop_deps="i686"
2356 x86_64_select="i686"
2357 x86_64_suggest="fast_cmov"
2358
2359 amd3dnow_deps="mmx"
2360 amd3dnowext_deps="amd3dnow"
2361 i686_deps="x86"
2362 mmx_deps="x86"
2363 mmxext_deps="mmx"
2364 sse_deps="mmxext"
2365 sse2_deps="sse"
2366 sse3_deps="sse2"
2367 ssse3_deps="sse3"
2368 sse4_deps="ssse3"
2369 sse42_deps="sse4"
2370 aesni_deps="sse42"
2371 avx_deps="sse42"
2372 xop_deps="avx"
2373 fma3_deps="avx"
2374 fma4_deps="avx"
2375 avx2_deps="avx"
2376
2377 mmx_external_deps="x86asm"
2378 mmx_inline_deps="inline_asm x86"
2379 mmx_suggest="mmx_external mmx_inline"
2380
2381 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2382     eval dep=\$${ext}_deps
2383     eval ${ext}_external_deps='"${dep}_external"'
2384     eval ${ext}_inline_deps='"${dep}_inline"'
2385     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2386 done
2387
2388 aligned_stack_if_any="aarch64 ppc x86"
2389 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2390 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2391 fast_unaligned_if_any="aarch64 ppc x86"
2392 simd_align_16_if_any="altivec neon sse"
2393 simd_align_32_if_any="avx"
2394
2395 # system capabilities
2396 symver_if_any="symver_asm_label symver_gnu_asm"
2397 valgrind_backtrace_conflict="optimizations"
2398 valgrind_backtrace_deps="valgrind_valgrind_h"
2399
2400 # threading support
2401 atomics_gcc_if="sync_val_compare_and_swap"
2402 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2403 atomics_win32_if="MemoryBarrier"
2404 atomics_native_if_any="$ATOMICS_LIST"
2405 w32threads_deps="atomics_native"
2406 threads_if_any="$THREADS_LIST"
2407
2408 # subsystems
2409 cbs_h264_select="cbs golomb"
2410 cbs_h265_select="cbs golomb"
2411 cbs_mpeg2_select="cbs"
2412 dct_select="rdft"
2413 dirac_parse_select="golomb"
2414 error_resilience_select="me_cmp"
2415 faandct_deps="faan"
2416 faandct_select="fdctdsp"
2417 faanidct_deps="faan"
2418 faanidct_select="idctdsp"
2419 h264dsp_select="startcode"
2420 hevcparse_select="golomb"
2421 frame_thread_encoder_deps="encoders threads"
2422 intrax8_select="blockdsp idctdsp"
2423 mdct_select="fft"
2424 mdct15_select="fft"
2425 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2426 mpeg_er_select="error_resilience"
2427 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2428 mpegaudiodsp_select="dct"
2429 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2430 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2431 vc1dsp_select="h264chroma qpeldsp startcode"
2432 rdft_select="fft"
2433
2434 # decoders / encoders
2435 aac_decoder_select="adts_header mdct15 mdct sinewin"
2436 aac_fixed_decoder_select="mdct sinewin"
2437 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2438 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2439 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2440 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2441 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2442 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2443 adpcm_g722_decoder_select="g722dsp"
2444 adpcm_g722_encoder_select="g722dsp"
2445 aic_decoder_select="golomb idctdsp"
2446 alac_encoder_select="lpc"
2447 als_decoder_select="bswapdsp"
2448 amrnb_decoder_select="lsp"
2449 amrwb_decoder_select="lsp"
2450 amv_decoder_select="sp5x_decoder exif"
2451 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2452 ape_decoder_select="bswapdsp llauddsp"
2453 apng_decoder_deps="zlib"
2454 apng_encoder_deps="zlib"
2455 apng_encoder_select="llvidencdsp"
2456 aptx_decoder_select="audio_frame_queue"
2457 aptx_encoder_select="audio_frame_queue"
2458 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2459 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2460 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2461 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2462 atrac1_decoder_select="mdct sinewin"
2463 atrac3_decoder_select="mdct"
2464 atrac3p_decoder_select="mdct sinewin"
2465 avrn_decoder_select="exif jpegtables"
2466 bink_decoder_select="blockdsp hpeldsp"
2467 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2468 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2469 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2470 clearvideo_decoder_select="idctdsp"
2471 cllc_decoder_select="bswapdsp"
2472 comfortnoise_encoder_select="lpc"
2473 cook_decoder_select="audiodsp mdct sinewin"
2474 cscd_decoder_select="lzo"
2475 cscd_decoder_suggest="zlib"
2476 dca_decoder_select="mdct"
2477 dds_decoder_select="texturedsp"
2478 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2479 dnxhd_decoder_select="blockdsp idctdsp"
2480 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2481 dolby_e_decoder_select="mdct"
2482 dvvideo_decoder_select="dvprofile idctdsp"
2483 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2484 dxa_decoder_deps="zlib"
2485 dxv_decoder_select="lzf texturedsp"
2486 eac3_decoder_select="ac3_decoder"
2487 eac3_encoder_select="ac3_encoder"
2488 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2489 eatgq_decoder_select="aandcttables"
2490 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2491 exr_decoder_deps="zlib"
2492 ffv1_decoder_select="rangecoder"
2493 ffv1_encoder_select="rangecoder"
2494 ffvhuff_decoder_select="huffyuv_decoder"
2495 ffvhuff_encoder_select="huffyuv_encoder"
2496 fic_decoder_select="golomb"
2497 flac_decoder_select="flacdsp"
2498 flac_encoder_select="bswapdsp flacdsp lpc"
2499 flashsv2_decoder_deps="zlib"
2500 flashsv2_encoder_deps="zlib"
2501 flashsv_decoder_deps="zlib"
2502 flashsv_encoder_deps="zlib"
2503 flv_decoder_select="h263_decoder"
2504 flv_encoder_select="h263_encoder"
2505 fourxm_decoder_select="blockdsp bswapdsp"
2506 fraps_decoder_select="bswapdsp huffman"
2507 g2m_decoder_deps="zlib"
2508 g2m_decoder_select="blockdsp idctdsp jpegtables"
2509 g729_decoder_select="audiodsp"
2510 h261_decoder_select="mpegvideo"
2511 h261_encoder_select="aandcttables mpegvideoenc"
2512 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2513 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2514 h263i_decoder_select="h263_decoder"
2515 h263p_decoder_select="h263_decoder"
2516 h263p_encoder_select="h263_encoder"
2517 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2518 h264_decoder_suggest="error_resilience"
2519 hap_decoder_select="snappy texturedsp"
2520 hap_encoder_deps="libsnappy"
2521 hap_encoder_select="texturedspenc"
2522 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2523 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2524 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2525 iac_decoder_select="imc_decoder"
2526 imc_decoder_select="bswapdsp fft mdct sinewin"
2527 indeo3_decoder_select="hpeldsp"
2528 indeo4_decoder_select="ividsp"
2529 indeo5_decoder_select="ividsp"
2530 interplay_video_decoder_select="hpeldsp"
2531 jpegls_decoder_select="mjpeg_decoder"
2532 jv_decoder_select="blockdsp"
2533 lagarith_decoder_select="llviddsp"
2534 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2535 magicyuv_decoder_select="llviddsp"
2536 magicyuv_encoder_select="llvidencdsp"
2537 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2538 metasound_decoder_select="lsp mdct sinewin"
2539 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2540 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2541 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2542 mjpegb_decoder_select="mjpeg_decoder"
2543 mlp_decoder_select="mlp_parser"
2544 mlp_encoder_select="lpc"
2545 motionpixels_decoder_select="bswapdsp"
2546 mp1_decoder_select="mpegaudio"
2547 mp1float_decoder_select="mpegaudio"
2548 mp2_decoder_select="mpegaudio"
2549 mp2float_decoder_select="mpegaudio"
2550 mp3_decoder_select="mpegaudio"
2551 mp3adu_decoder_select="mpegaudio"
2552 mp3adufloat_decoder_select="mpegaudio"
2553 mp3float_decoder_select="mpegaudio"
2554 mp3on4_decoder_select="mpegaudio"
2555 mp3on4float_decoder_select="mpegaudio"
2556 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2557 mpc8_decoder_select="mpegaudiodsp"
2558 mpegvideo_decoder_select="mpegvideo"
2559 mpeg1video_decoder_select="mpegvideo"
2560 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2561 mpeg2video_decoder_select="mpegvideo"
2562 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2563 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2564 mpeg4_encoder_select="h263_encoder"
2565 msa1_decoder_select="mss34dsp"
2566 mscc_decoder_deps="zlib"
2567 msmpeg4v1_decoder_select="h263_decoder"
2568 msmpeg4v2_decoder_select="h263_decoder"
2569 msmpeg4v2_encoder_select="h263_encoder"
2570 msmpeg4v3_decoder_select="h263_decoder"
2571 msmpeg4v3_encoder_select="h263_encoder"
2572 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2573 mts2_decoder_select="mss34dsp"
2574 mxpeg_decoder_select="mjpeg_decoder"
2575 nellymoser_decoder_select="mdct sinewin"
2576 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2577 nuv_decoder_select="idctdsp lzo"
2578 on2avc_decoder_select="mdct"
2579 opus_decoder_deps="swresample"
2580 opus_decoder_select="mdct15"
2581 opus_encoder_select="audio_frame_queue mdct15"
2582 png_decoder_deps="zlib"
2583 png_encoder_deps="zlib"
2584 png_encoder_select="llvidencdsp"
2585 prores_decoder_select="blockdsp idctdsp"
2586 prores_encoder_select="fdctdsp"
2587 qcelp_decoder_select="lsp"
2588 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2589 ra_144_decoder_select="audiodsp"
2590 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2591 ralf_decoder_select="golomb"
2592 rawvideo_decoder_select="bswapdsp"
2593 rscc_decoder_deps="zlib"
2594 rtjpeg_decoder_select="me_cmp"
2595 rv10_decoder_select="h263_decoder"
2596 rv10_encoder_select="h263_encoder"
2597 rv20_decoder_select="h263_decoder"
2598 rv20_encoder_select="h263_encoder"
2599 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2600 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2601 screenpresso_decoder_deps="zlib"
2602 shorten_decoder_select="bswapdsp"
2603 sipr_decoder_select="lsp"
2604 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2605 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2606 sonic_decoder_select="golomb rangecoder"
2607 sonic_encoder_select="golomb rangecoder"
2608 sonic_ls_encoder_select="golomb rangecoder"
2609 sp5x_decoder_select="mjpeg_decoder"
2610 srgc_decoder_deps="zlib"
2611 svq1_decoder_select="hpeldsp"
2612 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2613 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2614 svq3_decoder_suggest="zlib"
2615 tak_decoder_select="audiodsp"
2616 tdsc_decoder_deps="zlib"
2617 tdsc_decoder_select="mjpeg_decoder"
2618 theora_decoder_select="vp3_decoder"
2619 thp_decoder_select="mjpeg_decoder"
2620 tiff_decoder_suggest="zlib lzma"
2621 tiff_encoder_suggest="zlib"
2622 truehd_decoder_select="mlp_parser"
2623 truehd_encoder_select="lpc"
2624 truemotion2_decoder_select="bswapdsp"
2625 truespeech_decoder_select="bswapdsp"
2626 tscc_decoder_deps="zlib"
2627 twinvq_decoder_select="mdct lsp sinewin"
2628 txd_decoder_select="texturedsp"
2629 utvideo_decoder_select="bswapdsp llviddsp"
2630 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2631 vble_decoder_select="llviddsp"
2632 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2633 vc1image_decoder_select="vc1_decoder"
2634 vorbis_decoder_select="mdct"
2635 vorbis_encoder_select="mdct"
2636 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2637 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2638 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2639 vp6a_decoder_select="vp6_decoder"
2640 vp6f_decoder_select="vp6_decoder"
2641 vp7_decoder_select="h264pred videodsp vp8dsp"
2642 vp8_decoder_select="h264pred videodsp vp8dsp"
2643 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2644 webp_decoder_select="vp8_decoder exif"
2645 wmalossless_decoder_select="llauddsp"
2646 wmapro_decoder_select="mdct sinewin wma_freqs"
2647 wmav1_decoder_select="mdct sinewin wma_freqs"
2648 wmav1_encoder_select="mdct sinewin wma_freqs"
2649 wmav2_decoder_select="mdct sinewin wma_freqs"
2650 wmav2_encoder_select="mdct sinewin wma_freqs"
2651 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2652 wmv1_decoder_select="h263_decoder"
2653 wmv1_encoder_select="h263_encoder"
2654 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2655 wmv2_encoder_select="h263_encoder wmv2dsp"
2656 wmv3_decoder_select="vc1_decoder"
2657 wmv3image_decoder_select="wmv3_decoder"
2658 xma1_decoder_select="wmapro_decoder"
2659 xma2_decoder_select="wmapro_decoder"
2660 zerocodec_decoder_deps="zlib"
2661 zlib_decoder_deps="zlib"
2662 zlib_encoder_deps="zlib"
2663 zmbv_decoder_deps="zlib"
2664 zmbv_encoder_deps="zlib"
2665
2666 # hardware accelerators
2667 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2668 cuda_deps_any="libdl LoadLibrary"
2669 cuvid_deps="cuda"
2670 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2671 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2672 nvdec_deps="cuda"
2673 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2674 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2675 xvmc_deps="X11_extensions_XvMClib_h"
2676
2677 h263_vaapi_hwaccel_deps="vaapi"
2678 h263_vaapi_hwaccel_select="h263_decoder"
2679 h263_videotoolbox_hwaccel_deps="videotoolbox"
2680 h263_videotoolbox_hwaccel_select="h263_decoder"
2681 h264_d3d11va_hwaccel_deps="d3d11va"
2682 h264_d3d11va_hwaccel_select="h264_decoder"
2683 h264_d3d11va2_hwaccel_deps="d3d11va"
2684 h264_d3d11va2_hwaccel_select="h264_decoder"
2685 h264_dxva2_hwaccel_deps="dxva2"
2686 h264_dxva2_hwaccel_select="h264_decoder"
2687 h264_nvdec_hwaccel_deps="nvdec"
2688 h264_nvdec_hwaccel_select="h264_decoder"
2689 h264_vaapi_hwaccel_deps="vaapi"
2690 h264_vaapi_hwaccel_select="h264_decoder"
2691 h264_vdpau_hwaccel_deps="vdpau"
2692 h264_vdpau_hwaccel_select="h264_decoder"
2693 h264_videotoolbox_hwaccel_deps="videotoolbox"
2694 h264_videotoolbox_hwaccel_select="h264_decoder"
2695 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2696 hevc_d3d11va_hwaccel_select="hevc_decoder"
2697 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2698 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2699 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2700 hevc_dxva2_hwaccel_select="hevc_decoder"
2701 hevc_nvdec_hwaccel_deps="nvdec"
2702 hevc_nvdec_hwaccel_select="hevc_decoder"
2703 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2704 hevc_vaapi_hwaccel_select="hevc_decoder"
2705 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2706 hevc_vdpau_hwaccel_select="hevc_decoder"
2707 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2708 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2709 mpeg_xvmc_hwaccel_deps="xvmc"
2710 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2711 mpeg1_nvdec_hwaccel_deps="nvdec"
2712 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2713 mpeg1_vdpau_hwaccel_deps="vdpau"
2714 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2715 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2716 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2717 mpeg1_xvmc_hwaccel_deps="xvmc"
2718 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2719 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2720 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2721 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2722 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_dxva2_hwaccel_deps="dxva2"
2724 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_nvdec_hwaccel_deps="nvdec"
2726 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_vaapi_hwaccel_deps="vaapi"
2728 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_vdpau_hwaccel_deps="vdpau"
2730 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2732 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2733 mpeg2_xvmc_hwaccel_deps="xvmc"
2734 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2735 mpeg4_nvdec_hwaccel_deps="nvdec"
2736 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2737 mpeg4_vaapi_hwaccel_deps="vaapi"
2738 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2739 mpeg4_vdpau_hwaccel_deps="vdpau"
2740 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2741 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2742 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2743 vc1_d3d11va_hwaccel_deps="d3d11va"
2744 vc1_d3d11va_hwaccel_select="vc1_decoder"
2745 vc1_d3d11va2_hwaccel_deps="d3d11va"
2746 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2747 vc1_dxva2_hwaccel_deps="dxva2"
2748 vc1_dxva2_hwaccel_select="vc1_decoder"
2749 vc1_nvdec_hwaccel_deps="nvdec"
2750 vc1_nvdec_hwaccel_select="vc1_decoder"
2751 vc1_vaapi_hwaccel_deps="vaapi"
2752 vc1_vaapi_hwaccel_select="vc1_decoder"
2753 vc1_vdpau_hwaccel_deps="vdpau"
2754 vc1_vdpau_hwaccel_select="vc1_decoder"
2755 vp8_nvdec_hwaccel_deps="nvdec"
2756 vp8_nvdec_hwaccel_select="vp8_decoder"
2757 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2758 vp8_vaapi_hwaccel_select="vp8_decoder"
2759 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2760 vp9_d3d11va_hwaccel_select="vp9_decoder"
2761 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2762 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2763 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2764 vp9_dxva2_hwaccel_select="vp9_decoder"
2765 vp9_nvdec_hwaccel_deps="nvdec"
2766 vp9_nvdec_hwaccel_select="vp9_decoder"
2767 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2768 vp9_vaapi_hwaccel_select="vp9_decoder"
2769 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2770 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2771 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2772 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2773 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2774 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2775
2776 # hardware-accelerated codecs
2777 omx_deps="libdl pthreads"
2778 omx_rpi_select="omx"
2779 qsv_deps="libmfx"
2780 qsvdec_select="qsv"
2781 qsvenc_select="qsv"
2782 qsvvpp_select="qsv"
2783 vaapi_encode_deps="vaapi"
2784 v4l2_m2m_deps_any="linux_videodev2_h"
2785
2786 hwupload_cuda_filter_deps="cuda"
2787 scale_npp_filter_deps="cuda libnpp"
2788 scale_cuda_filter_deps="cuda_sdk"
2789 thumbnail_cuda_filter_deps="cuda_sdk"
2790
2791 amf_deps_any="libdl LoadLibrary"
2792 nvenc_deps="cuda"
2793 nvenc_deps_any="libdl LoadLibrary"
2794 nvenc_encoder_deps="nvenc"
2795
2796 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2797 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2798 h264_amf_encoder_deps="amf"
2799 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2800 h264_cuvid_decoder_deps="cuvid"
2801 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2802 h264_mediacodec_decoder_deps="mediacodec"
2803 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2804 h264_mmal_decoder_deps="mmal"
2805 h264_nvenc_encoder_deps="nvenc"
2806 h264_omx_encoder_deps="omx"
2807 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2808 h264_qsv_encoder_select="qsvenc"
2809 h264_rkmpp_decoder_deps="rkmpp"
2810 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2811 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2812 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2813 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2814 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2815 hevc_amf_encoder_deps="amf"
2816 hevc_cuvid_decoder_deps="cuvid"
2817 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2818 hevc_mediacodec_decoder_deps="mediacodec"
2819 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2820 hevc_nvenc_encoder_deps="nvenc"
2821 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2822 hevc_qsv_encoder_select="hevcparse qsvenc"
2823 hevc_rkmpp_decoder_deps="rkmpp"
2824 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2825 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2826 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2827 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2828 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2829 mjpeg_cuvid_decoder_deps="cuvid"
2830 mjpeg_qsv_encoder_deps="libmfx"
2831 mjpeg_qsv_encoder_select="qsvenc"
2832 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2833 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2834 mpeg1_cuvid_decoder_deps="cuvid"
2835 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2836 mpeg2_crystalhd_decoder_select="crystalhd"
2837 mpeg2_cuvid_decoder_deps="cuvid"
2838 mpeg2_mmal_decoder_deps="mmal"
2839 mpeg2_mediacodec_decoder_deps="mediacodec"
2840 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2841 mpeg2_qsv_encoder_select="qsvenc"
2842 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2843 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2844 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2845 mpeg4_crystalhd_decoder_select="crystalhd"
2846 mpeg4_cuvid_decoder_deps="cuvid"
2847 mpeg4_mediacodec_decoder_deps="mediacodec"
2848 mpeg4_mmal_decoder_deps="mmal"
2849 mpeg4_omx_encoder_deps="omx"
2850 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2851 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2852 msmpeg4_crystalhd_decoder_select="crystalhd"
2853 nvenc_h264_encoder_select="h264_nvenc_encoder"
2854 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2855 vc1_crystalhd_decoder_select="crystalhd"
2856 vc1_cuvid_decoder_deps="cuvid"
2857 vc1_mmal_decoder_deps="mmal"
2858 vc1_qsv_decoder_select="qsvdec vc1_parser"
2859 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2860 vp8_cuvid_decoder_deps="cuvid"
2861 vp8_mediacodec_decoder_deps="mediacodec"
2862 vp8_qsv_decoder_select="qsvdec vp8_parser"
2863 vp8_rkmpp_decoder_deps="rkmpp"
2864 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2865 vp8_vaapi_encoder_select="vaapi_encode"
2866 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2867 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2868 vp9_cuvid_decoder_deps="cuvid"
2869 vp9_mediacodec_decoder_deps="mediacodec"
2870 vp9_rkmpp_decoder_deps="rkmpp"
2871 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2872 vp9_vaapi_encoder_select="vaapi_encode"
2873 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2874 wmv3_crystalhd_decoder_select="crystalhd"
2875
2876 # parsers
2877 aac_parser_select="adts_header"
2878 h264_parser_select="golomb h264dsp h264parse"
2879 hevc_parser_select="hevcparse"
2880 mpegaudio_parser_select="mpegaudioheader"
2881 mpegvideo_parser_select="mpegvideo"
2882 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2883 vc1_parser_select="vc1dsp"
2884
2885 # bitstream_filters
2886 aac_adtstoasc_bsf_select="adts_header"
2887 h264_metadata_bsf_select="cbs_h264"
2888 h264_redundant_pps_bsf_select="cbs_h264"
2889 hevc_metadata_bsf_select="cbs_h265"
2890 mjpeg2jpeg_bsf_select="jpegtables"
2891 mpeg2_metadata_bsf_select="cbs_mpeg2"
2892 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2893
2894 # external libraries
2895 aac_at_decoder_deps="audiotoolbox"
2896 aac_at_decoder_select="aac_adtstoasc_bsf"
2897 ac3_at_decoder_deps="audiotoolbox"
2898 ac3_at_decoder_select="ac3_parser"
2899 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2900 alac_at_decoder_deps="audiotoolbox"
2901 amr_nb_at_decoder_deps="audiotoolbox"
2902 avisynth_deps_any="libdl LoadLibrary"
2903 avisynth_demuxer_deps="avisynth"
2904 avisynth_demuxer_select="riffdec"
2905 eac3_at_decoder_deps="audiotoolbox"
2906 eac3_at_decoder_select="ac3_parser"
2907 gsm_ms_at_decoder_deps="audiotoolbox"
2908 ilbc_at_decoder_deps="audiotoolbox"
2909 mp1_at_decoder_deps="audiotoolbox"
2910 mp2_at_decoder_deps="audiotoolbox"
2911 mp3_at_decoder_deps="audiotoolbox"
2912 mp1_at_decoder_select="mpegaudioheader"
2913 mp2_at_decoder_select="mpegaudioheader"
2914 mp3_at_decoder_select="mpegaudioheader"
2915 pcm_alaw_at_decoder_deps="audiotoolbox"
2916 pcm_mulaw_at_decoder_deps="audiotoolbox"
2917 qdmc_at_decoder_deps="audiotoolbox"
2918 qdm2_at_decoder_deps="audiotoolbox"
2919 aac_at_encoder_deps="audiotoolbox"
2920 aac_at_encoder_select="audio_frame_queue"
2921 alac_at_encoder_deps="audiotoolbox"
2922 alac_at_encoder_select="audio_frame_queue"
2923 ilbc_at_encoder_deps="audiotoolbox"
2924 ilbc_at_encoder_select="audio_frame_queue"
2925 pcm_alaw_at_encoder_deps="audiotoolbox"
2926 pcm_alaw_at_encoder_select="audio_frame_queue"
2927 pcm_mulaw_at_encoder_deps="audiotoolbox"
2928 pcm_mulaw_at_encoder_select="audio_frame_queue"
2929 chromaprint_muxer_deps="chromaprint"
2930 h264_videotoolbox_encoder_deps="pthreads"
2931 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2932 hevc_videotoolbox_encoder_deps="pthreads"
2933 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2934 libcelt_decoder_deps="libcelt"
2935 libfdk_aac_decoder_deps="libfdk_aac"
2936 libfdk_aac_encoder_deps="libfdk_aac"
2937 libfdk_aac_encoder_select="audio_frame_queue"
2938 libgme_demuxer_deps="libgme"
2939 libgsm_decoder_deps="libgsm"
2940 libgsm_encoder_deps="libgsm"
2941 libgsm_ms_decoder_deps="libgsm"
2942 libgsm_ms_encoder_deps="libgsm"
2943 libilbc_decoder_deps="libilbc"
2944 libilbc_encoder_deps="libilbc"
2945 libkvazaar_encoder_deps="libkvazaar"
2946 libmodplug_demuxer_deps="libmodplug"
2947 libmp3lame_encoder_deps="libmp3lame"
2948 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2949 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2950 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2951 libopencore_amrnb_encoder_select="audio_frame_queue"
2952 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2953 libopenh264_decoder_deps="libopenh264"
2954 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2955 libopenh264_encoder_deps="libopenh264"
2956 libopenjpeg_decoder_deps="libopenjpeg"
2957 libopenjpeg_encoder_deps="libopenjpeg"
2958 libopenmpt_demuxer_deps="libopenmpt"
2959 libopus_decoder_deps="libopus"
2960 libopus_encoder_deps="libopus"
2961 libopus_encoder_select="audio_frame_queue"
2962 librsvg_decoder_deps="librsvg"
2963 libshine_encoder_deps="libshine"
2964 libshine_encoder_select="audio_frame_queue"
2965 libspeex_decoder_deps="libspeex"
2966 libspeex_encoder_deps="libspeex"
2967 libspeex_encoder_select="audio_frame_queue"
2968 libtheora_encoder_deps="libtheora"
2969 libtwolame_encoder_deps="libtwolame"
2970 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2971 libvorbis_decoder_deps="libvorbis"
2972 libvorbis_encoder_deps="libvorbis libvorbisenc"
2973 libvorbis_encoder_select="audio_frame_queue"
2974 libvpx_vp8_decoder_deps="libvpx"
2975 libvpx_vp8_encoder_deps="libvpx"
2976 libvpx_vp9_decoder_deps="libvpx"
2977 libvpx_vp9_encoder_deps="libvpx"
2978 libwavpack_encoder_deps="libwavpack"
2979 libwavpack_encoder_select="audio_frame_queue"
2980 libwebp_encoder_deps="libwebp"
2981 libwebp_anim_encoder_deps="libwebp"
2982 libx262_encoder_deps="libx262"
2983 libx264_encoder_deps="libx264"
2984 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2985 libx264rgb_encoder_select="libx264_encoder"
2986 libx265_encoder_deps="libx265"
2987 libxavs_encoder_deps="libxavs"
2988 libxvid_encoder_deps="libxvid"
2989 libzvbi_teletext_decoder_deps="libzvbi"
2990 videotoolbox_suggest="coreservices"
2991 videotoolbox_deps="corefoundation coremedia corevideo"
2992 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2993
2994 # demuxers / muxers
2995 ac3_demuxer_select="ac3_parser"
2996 aiff_muxer_select="iso_media"
2997 asf_demuxer_select="riffdec"
2998 asf_o_demuxer_select="riffdec"
2999 asf_muxer_select="riffenc"
3000 asf_stream_muxer_select="asf_muxer"
3001 avi_demuxer_select="iso_media riffdec exif"
3002 avi_muxer_select="riffenc"
3003 caf_demuxer_select="iso_media riffdec"
3004 caf_muxer_select="iso_media"
3005 dash_muxer_select="mp4_muxer"
3006 dash_demuxer_deps="libxml2"
3007 dirac_demuxer_select="dirac_parser"
3008 dts_demuxer_select="dca_parser"
3009 dtshd_demuxer_select="dca_parser"
3010 dv_demuxer_select="dvprofile"
3011 dv_muxer_select="dvprofile"
3012 dxa_demuxer_select="riffdec"
3013 eac3_demuxer_select="ac3_parser"
3014 f4v_muxer_select="mov_muxer"
3015 fifo_muxer_deps="threads"
3016 flac_demuxer_select="flac_parser"
3017 hds_muxer_select="flv_muxer"
3018 hls_muxer_select="mpegts_muxer"
3019 hls_muxer_suggest="gcrypt openssl"
3020 image2_alias_pix_demuxer_select="image2_demuxer"
3021 image2_brender_pix_demuxer_select="image2_demuxer"
3022 ipod_muxer_select="mov_muxer"
3023 ismv_muxer_select="mov_muxer"
3024 matroska_audio_muxer_select="matroska_muxer"
3025 matroska_demuxer_select="iso_media riffdec"
3026 matroska_demuxer_suggest="bzlib lzo zlib"
3027 matroska_muxer_select="iso_media riffenc"
3028 mmf_muxer_select="riffenc"
3029 mov_demuxer_select="iso_media riffdec"
3030 mov_demuxer_suggest="zlib"
3031 mov_muxer_select="iso_media riffenc rtpenc_chain"
3032 mp3_demuxer_select="mpegaudio_parser"
3033 mp3_muxer_select="mpegaudioheader"
3034 mp4_muxer_select="mov_muxer"
3035 mpegts_demuxer_select="iso_media"
3036 mpegts_muxer_select="adts_muxer latm_muxer"
3037 mpegtsraw_demuxer_select="mpegts_demuxer"
3038 mxf_d10_muxer_select="mxf_muxer"
3039 mxf_opatom_muxer_select="mxf_muxer"
3040 nut_muxer_select="riffenc"
3041 nuv_demuxer_select="riffdec"
3042 oga_muxer_select="ogg_muxer"
3043 ogg_demuxer_select="dirac_parse"
3044 ogv_muxer_select="ogg_muxer"
3045 opus_muxer_select="ogg_muxer"
3046 psp_muxer_select="mov_muxer"
3047 rtp_demuxer_select="sdp_demuxer"
3048 rtp_muxer_select="golomb"
3049 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3050 rtsp_demuxer_select="http_protocol rtpdec"
3051 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3052 sap_demuxer_select="sdp_demuxer"
3053 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3054 sdp_demuxer_select="rtpdec"
3055 smoothstreaming_muxer_select="ismv_muxer"
3056 spdif_demuxer_select="adts_header"
3057 spdif_muxer_select="adts_header"
3058 spx_muxer_select="ogg_muxer"
3059 swf_demuxer_suggest="zlib"
3060 tak_demuxer_select="tak_parser"
3061 tg2_muxer_select="mov_muxer"
3062 tgp_muxer_select="mov_muxer"
3063 vobsub_demuxer_select="mpegps_demuxer"
3064 w64_demuxer_select="wav_demuxer"
3065 w64_muxer_select="wav_muxer"
3066 wav_demuxer_select="riffdec"
3067 wav_muxer_select="riffenc"
3068 webm_muxer_select="iso_media riffenc"
3069 webm_dash_manifest_demuxer_select="matroska_demuxer"
3070 wtv_demuxer_select="mpegts_demuxer riffdec"
3071 wtv_muxer_select="mpegts_muxer riffenc"
3072 xmv_demuxer_select="riffdec"
3073 xwma_demuxer_select="riffdec"
3074
3075 # indevs / outdevs
3076 alsa_indev_deps="alsa"
3077 alsa_outdev_deps="alsa"
3078 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3079 avfoundation_indev_suggest="coregraphics applicationservices"
3080 avfoundation_indev_extralibs="-framework Foundation"
3081 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3082 caca_outdev_deps="libcaca"
3083 decklink_deps_any="libdl LoadLibrary"
3084 decklink_indev_deps="decklink threads"
3085 decklink_indev_extralibs="-lstdc++"
3086 decklink_outdev_deps="decklink threads"
3087 decklink_outdev_extralibs="-lstdc++"
3088 libndi_newtek_indev_deps="libndi_newtek"
3089 libndi_newtek_indev_extralibs="-lndi"
3090 libndi_newtek_outdev_deps="libndi_newtek"
3091 libndi_newtek_outdev_extralibs="-lndi"
3092 dshow_indev_deps="IBaseFilter"
3093 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3094 fbdev_indev_deps="linux_fb_h"
3095 fbdev_outdev_deps="linux_fb_h"
3096 gdigrab_indev_deps="CreateDIBSection"
3097 gdigrab_indev_extralibs="-lgdi32"
3098 gdigrab_indev_select="bmp_decoder"
3099 iec61883_indev_deps="libiec61883"
3100 jack_indev_deps="libjack"
3101 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3102 kmsgrab_indev_deps="libdrm"
3103 lavfi_indev_deps="avfilter"
3104 libcdio_indev_deps="libcdio"
3105 libdc1394_indev_deps="libdc1394"
3106 openal_indev_deps="openal"
3107 opengl_outdev_deps="opengl"
3108 oss_indev_deps_any="sys_soundcard_h"
3109 oss_outdev_deps_any="sys_soundcard_h"
3110 pulse_indev_deps="libpulse"
3111 pulse_outdev_deps="libpulse"
3112 sdl2_outdev_deps="sdl2"
3113 sndio_indev_deps="sndio"
3114 sndio_outdev_deps="sndio"
3115 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3116 v4l2_indev_suggest="libv4l2"
3117 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3118 v4l2_outdev_suggest="libv4l2"
3119 vfwcap_indev_deps="vfw32 vfwcap_defines"
3120 xcbgrab_indev_deps="libxcb"
3121 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3122 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3123 xv_outdev_extralibs="-lXv -lX11 -lXext"
3124
3125 # protocols
3126 async_protocol_deps="threads"
3127 bluray_protocol_deps="libbluray"
3128 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3129 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3130 ffrtmpcrypt_protocol_select="tcp_protocol"
3131 ffrtmphttp_protocol_conflict="librtmp_protocol"
3132 ffrtmphttp_protocol_select="http_protocol"
3133 ftp_protocol_select="tcp_protocol"
3134 gopher_protocol_select="network"
3135 http_protocol_select="tcp_protocol"
3136 http_protocol_suggest="zlib"
3137 httpproxy_protocol_select="tcp_protocol"
3138 httpproxy_protocol_suggest="zlib"
3139 https_protocol_select="tls_protocol"
3140 https_protocol_suggest="zlib"
3141 icecast_protocol_select="http_protocol"
3142 librtmp_protocol_deps="librtmp"
3143 librtmpe_protocol_deps="librtmp"
3144 librtmps_protocol_deps="librtmp"
3145 librtmpt_protocol_deps="librtmp"
3146 librtmpte_protocol_deps="librtmp"
3147 libsmbclient_protocol_deps="libsmbclient gplv3"
3148 libssh_protocol_deps="libssh"
3149 libtls_conflict="openssl gnutls"
3150 mmsh_protocol_select="http_protocol"
3151 mmst_protocol_select="network"
3152 rtmp_protocol_conflict="librtmp_protocol"
3153 rtmp_protocol_select="tcp_protocol"
3154 rtmp_protocol_suggest="zlib"
3155 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3156 rtmpe_protocol_suggest="zlib"
3157 rtmps_protocol_conflict="librtmp_protocol"
3158 rtmps_protocol_select="tls_protocol"
3159 rtmps_protocol_suggest="zlib"
3160 rtmpt_protocol_select="ffrtmphttp_protocol"
3161 rtmpt_protocol_suggest="zlib"
3162 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3163 rtmpte_protocol_suggest="zlib"
3164 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3165 rtmpts_protocol_suggest="zlib"
3166 rtp_protocol_select="udp_protocol"
3167 schannel_conflict="openssl gnutls libtls"
3168 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3169 sctp_protocol_select="network"
3170 securetransport_conflict="openssl gnutls libtls"
3171 srtp_protocol_select="rtp_protocol srtp"
3172 tcp_protocol_select="network"
3173 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3174 tls_protocol_select="tcp_protocol"
3175 udp_protocol_select="network"
3176 udplite_protocol_select="network"
3177 unix_protocol_deps="sys_un_h"
3178 unix_protocol_select="network"
3179
3180 # filters
3181 afftfilt_filter_deps="avcodec"
3182 afftfilt_filter_select="fft"
3183 afir_filter_deps="avcodec"
3184 afir_filter_select="fft"
3185 amovie_filter_deps="avcodec avformat"
3186 aresample_filter_deps="swresample"
3187 ass_filter_deps="libass"
3188 atempo_filter_deps="avcodec"
3189 atempo_filter_select="rdft"
3190 azmq_filter_deps="libzmq"
3191 blackframe_filter_deps="gpl"
3192 boxblur_filter_deps="gpl"
3193 bs2b_filter_deps="libbs2b"
3194 colormatrix_filter_deps="gpl"
3195 coreimage_filter_deps="coreimage appkit"
3196 coreimage_filter_extralibs="-framework OpenGL"
3197 coreimagesrc_filter_deps="coreimage appkit"
3198 coreimagesrc_filter_extralibs="-framework OpenGL"
3199 cover_rect_filter_deps="avcodec avformat gpl"
3200 cropdetect_filter_deps="gpl"
3201 deinterlace_qsv_filter_deps="libmfx"
3202 deinterlace_vaapi_filter_deps="vaapi"
3203 delogo_filter_deps="gpl"
3204 deshake_filter_select="pixelutils"
3205 drawtext_filter_deps="libfreetype"
3206 drawtext_filter_suggest="libfontconfig libfribidi"
3207 elbg_filter_deps="avcodec"
3208 eq_filter_deps="gpl"
3209 fftfilt_filter_deps="avcodec"
3210 fftfilt_filter_select="rdft"
3211 find_rect_filter_deps="avcodec avformat gpl"
3212 firequalizer_filter_deps="avcodec"
3213 firequalizer_filter_select="rdft"
3214 flite_filter_deps="libflite"
3215 framerate_filter_select="pixelutils"
3216 frei0r_filter_deps="frei0r libdl"
3217 frei0r_src_filter_deps="frei0r libdl"
3218 fspp_filter_deps="gpl"
3219 geq_filter_deps="gpl"
3220 histeq_filter_deps="gpl"
3221 hqdn3d_filter_deps="gpl"
3222 interlace_filter_deps="gpl"
3223 kerndeint_filter_deps="gpl"
3224 ladspa_filter_deps="ladspa libdl"
3225 lv2_filter_deps="lv2"
3226 mcdeint_filter_deps="avcodec gpl"
3227 movie_filter_deps="avcodec avformat"
3228 mpdecimate_filter_deps="gpl"
3229 mpdecimate_filter_select="pixelutils"
3230 mptestsrc_filter_deps="gpl"
3231 negate_filter_deps="lut_filter"
3232 nnedi_filter_deps="gpl"
3233 ocr_filter_deps="libtesseract"
3234 ocv_filter_deps="libopencv"
3235 overlay_opencl_filter_deps="opencl"
3236 overlay_qsv_filter_deps="libmfx"
3237 overlay_qsv_filter_select="qsvvpp"
3238 owdenoise_filter_deps="gpl"
3239 pan_filter_deps="swresample"
3240 perspective_filter_deps="gpl"
3241 phase_filter_deps="gpl"
3242 pp7_filter_deps="gpl"
3243 pp_filter_deps="gpl postproc"
3244 pullup_filter_deps="gpl"
3245 removelogo_filter_deps="avcodec avformat swscale"
3246 repeatfields_filter_deps="gpl"
3247 resample_filter_deps="avresample"
3248 rubberband_filter_deps="librubberband"
3249 sab_filter_deps="gpl swscale"
3250 scale2ref_filter_deps="swscale"
3251 scale_filter_deps="swscale"
3252 scale_qsv_filter_deps="libmfx"
3253 select_filter_select="pixelutils"
3254 showcqt_filter_deps="avcodec avformat swscale"
3255 showcqt_filter_suggest="libfontconfig libfreetype"
3256 showcqt_filter_select="fft"
3257 showfreqs_filter_deps="avcodec"
3258 showfreqs_filter_select="fft"
3259 showspectrum_filter_deps="avcodec"
3260 showspectrum_filter_select="fft"
3261 showspectrumpic_filter_deps="avcodec"
3262 showspectrumpic_filter_select="fft"
3263 signature_filter_deps="gpl avcodec avformat"
3264 smartblur_filter_deps="gpl swscale"
3265 sofalizer_filter_deps="libmysofa avcodec"
3266 sofalizer_filter_select="fft"
3267 spectrumsynth_filter_deps="avcodec"
3268 spectrumsynth_filter_select="fft"
3269 spp_filter_deps="gpl avcodec"
3270 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3271 stereo3d_filter_deps="gpl"
3272 subtitles_filter_deps="avformat avcodec libass"
3273 super2xsai_filter_deps="gpl"
3274 pixfmts_super2xsai_test_deps="super2xsai_filter"
3275 tinterlace_filter_deps="gpl"
3276 tinterlace_merge_test_deps="tinterlace_filter"
3277 tinterlace_pad_test_deps="tinterlace_filter"
3278 tonemap_filter_deps="const_nan"
3279 unsharp_opencl_filter_deps="opencl"
3280 uspp_filter_deps="gpl avcodec"
3281 vaguedenoiser_filter_deps="gpl"
3282 vidstabdetect_filter_deps="libvidstab"
3283 vidstabtransform_filter_deps="libvidstab"
3284 libvmaf_filter_deps="libvmaf"
3285 zmq_filter_deps="libzmq"
3286 zoompan_filter_deps="swscale"
3287 zscale_filter_deps="libzimg const_nan"
3288 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3289 vpp_qsv_filter_deps="libmfx"
3290 vpp_qsv_filter_select="qsvvpp"
3291
3292 # examples
3293 avio_dir_cmd_deps="avformat avutil"
3294 avio_reading_deps="avformat avcodec avutil"
3295 decode_audio_example_deps="avcodec avutil"
3296 decode_video_example_deps="avcodec avutil"
3297 demuxing_decoding_example_deps="avcodec avformat avutil"
3298 encode_audio_example_deps="avcodec avutil"
3299 encode_video_example_deps="avcodec avutil"
3300 extract_mvs_example_deps="avcodec avformat avutil"
3301 filter_audio_example_deps="avfilter avutil"
3302 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3303 filtering_video_example_deps="avfilter avcodec avformat avutil"
3304 http_multiclient_example_deps="avformat avutil fork"
3305 hw_decode_example_deps="avcodec avformat avutil"
3306 metadata_example_deps="avformat avutil"
3307 muxing_example_deps="avcodec avformat avutil swscale"
3308 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3309 remuxing_example_deps="avcodec avformat avutil"
3310 resampling_audio_example_deps="avutil swresample"
3311 scaling_video_example_deps="avutil swscale"
3312 transcode_aac_example_deps="avcodec avformat swresample"
3313 transcoding_example_deps="avfilter avcodec avformat avutil"
3314 vaapi_encode_example_deps="avcodec avutil"
3315
3316 # EXTRALIBS_LIST
3317 cpu_init_extralibs="pthreads_extralibs"
3318 cws2fws_extralibs="zlib_extralibs"
3319
3320 # libraries, in linking order
3321 avcodec_deps="avutil"
3322 avcodec_suggest="libm"
3323 avcodec_select="null_bsf"
3324 avdevice_deps="avformat avcodec avutil"
3325 avdevice_suggest="libm"
3326 avfilter_deps="avutil"
3327 avfilter_suggest="libm"
3328 avformat_deps="avcodec avutil"
3329 avformat_suggest="libm network zlib"
3330 avresample_deps="avutil"
3331 avresample_suggest="libm"
3332 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3333 postproc_deps="avutil gpl"
3334 postproc_suggest="libm"
3335 swresample_deps="avutil"
3336 swresample_suggest="libm libsoxr"
3337 swscale_deps="avutil"
3338 swscale_suggest="libm"
3339
3340 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3341 avfilter_extralibs="pthreads_extralibs"
3342 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3343
3344 # programs
3345 ffmpeg_deps="avcodec avfilter avformat swresample"
3346 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3347                null_filter
3348                trim_filter"
3349 ffmpeg_suggest="ole32 psapi shell32"
3350 ffplay_deps="avcodec avformat swscale swresample sdl2"
3351 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3352 ffplay_suggest="shell32"
3353 ffprobe_deps="avcodec avformat"
3354 ffprobe_suggest="shell32"
3355 ffserver_deps="avformat fork sarestart"
3356 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3357
3358 # documentation
3359 podpages_deps="perl"
3360 manpages_deps="perl pod2man"
3361 htmlpages_deps="perl"
3362 htmlpages_deps_any="makeinfo_html texi2html"
3363 txtpages_deps="perl makeinfo"
3364 doc_deps_any="manpages htmlpages podpages txtpages"
3365
3366 # default parameters
3367
3368 logfile="ffbuild/config.log"
3369
3370 # installation paths
3371 prefix_default="/usr/local"
3372 bindir_default='${prefix}/bin'
3373 datadir_default='${prefix}/share/ffmpeg'
3374 docdir_default='${prefix}/share/doc/ffmpeg'
3375 incdir_default='${prefix}/include'
3376 libdir_default='${prefix}/lib'
3377 mandir_default='${prefix}/share/man'
3378
3379 # toolchain
3380 ar_default="ar"
3381 cc_default="gcc"
3382 cxx_default="g++"
3383 host_cc_default="gcc"
3384 doxygen_default="doxygen"
3385 install="install"
3386 ln_s_default="ln -s -f"
3387 nm_default="nm -g"
3388 pkg_config_default=pkg-config
3389 ranlib_default="ranlib"
3390 strip_default="strip"
3391 version_script='--version-script'
3392 objformat="elf32"
3393 x86asmexe_default="nasm"
3394 windres_default="windres"
3395 nvcc_default="nvcc"
3396 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3397 striptype="direct"
3398
3399 # OS
3400 target_os_default=$(tolower $(uname -s))
3401 host_os=$target_os_default
3402
3403 # machine
3404 if test "$target_os_default" = aix; then
3405     arch_default=$(uname -p)
3406     strip_default="strip -X32_64"
3407 else
3408     arch_default=$(uname -m)
3409 fi
3410 cpu="generic"
3411 intrinsics="none"
3412
3413 # configurable options
3414 enable $PROGRAM_LIST
3415 enable $DOCUMENT_LIST
3416 enable $EXAMPLE_LIST
3417 enable $(filter_out avresample $LIBRARY_LIST)
3418 enable stripping
3419
3420 enable asm
3421 enable debug
3422 enable doc
3423 enable faan faandct faanidct
3424 enable optimizations
3425 enable runtime_cpudetect
3426 enable safe_bitstream_reader
3427 enable static
3428 enable swscale_alpha
3429 enable valgrind_backtrace
3430
3431 sws_max_filter_size_default=256
3432 set_default sws_max_filter_size
3433
3434 # internal components are enabled by default
3435 enable $EXTRALIBS_LIST
3436
3437 # Avoid external, non-system, libraries getting enabled by dependency resolution
3438 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3439
3440 # build settings
3441 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3442 LIBPREF="lib"
3443 LIBSUF=".a"
3444 FULLNAME='$(NAME)$(BUILDSUF)'
3445 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3446 SLIBPREF="lib"
3447 SLIBSUF=".so"
3448 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3449 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3450 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3451 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3452 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3453 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3454 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3455
3456 asflags_filter=echo
3457 cflags_filter=echo
3458 ldflags_filter=echo
3459
3460 AS_C='-c'
3461 AS_O='-o $@'
3462 CC_C='-c'
3463 CC_E='-E -o $@'
3464 CC_O='-o $@'
3465 CXX_C='-c'
3466 CXX_O='-o $@'
3467 OBJCC_C='-c'
3468 OBJCC_E='-E -o $@'
3469 OBJCC_O='-o $@'
3470 X86ASM_O='-o $@'
3471 LD_O='-o $@'
3472 LD_LIB='-l%'
3473 LD_PATH='-L'
3474 HOSTCC_C='-c'
3475 HOSTCC_E='-E -o $@'
3476 HOSTCC_O='-o $@'
3477 HOSTLD_O='-o $@'
3478 NVCC_C='-c'
3479 NVCC_O='-o $@'
3480
3481 host_extralibs='-lm'
3482 host_cflags_filter=echo
3483 host_ldflags_filter=echo
3484
3485 target_path='$(CURDIR)'
3486
3487 # since the object filename is not given with the -MM flag, the compiler
3488 # is only able to print the basename, and we must add the path ourselves
3489 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3490 DEPFLAGS='-MM'
3491
3492 mkdir -p ffbuild
3493
3494 # find source path
3495 if test -f configure; then
3496     source_path=.
3497 else
3498     source_path=$(cd $(dirname "$0"); pwd)
3499     case "$source_path" in
3500         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3501     esac
3502     test -e "$source_path/config.h" &&
3503         die "Out of tree builds are impossible with config.h in source dir."
3504 fi
3505
3506 for v in "$@"; do
3507     r=${v#*=}
3508     l=${v%"$r"}
3509     r=$(sh_quote "$r")
3510     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3511 done
3512
3513 find_things(){
3514     thing=$1
3515     pattern=$2
3516     file=$source_path/$3
3517     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3518 }
3519
3520 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3521 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3522 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3523 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3524 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3525 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3526 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3527 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3528
3529 find_things_extern(){
3530     thing=$1
3531     pattern=$2
3532     file=$source_path/$3
3533     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3534 }
3535
3536 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3537 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3538 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3539
3540 AVCODEC_COMPONENTS_LIST="
3541     $BSF_LIST
3542     $DECODER_LIST
3543     $ENCODER_LIST
3544     $HWACCEL_LIST
3545     $PARSER_LIST
3546 "
3547
3548 AVDEVICE_COMPONENTS_LIST="
3549     $INDEV_LIST
3550     $OUTDEV_LIST
3551 "
3552
3553 AVFILTER_COMPONENTS_LIST="
3554     $FILTER_LIST
3555 "
3556
3557 AVFORMAT_COMPONENTS_LIST="
3558     $DEMUXER_LIST
3559     $MUXER_LIST
3560     $PROTOCOL_LIST
3561 "
3562
3563 ALL_COMPONENTS="
3564     $AVCODEC_COMPONENTS_LIST
3565     $AVDEVICE_COMPONENTS_LIST
3566     $AVFILTER_COMPONENTS_LIST
3567     $AVFORMAT_COMPONENTS_LIST
3568 "
3569
3570 for n in $COMPONENT_LIST; do
3571     v=$(toupper ${n%s})_LIST
3572     eval enable \$$v
3573     eval ${n}_if_any="\$$v"
3574 done
3575
3576 enable $ARCH_EXT_LIST
3577
3578 die_unknown(){
3579     echo "Unknown option \"$1\"."
3580     echo "See $0 --help for available options."
3581     exit 1
3582 }
3583
3584 print_in_columns() {
3585     cols=$(expr $ncols / 24)
3586     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3587 }
3588
3589 show_list() {
3590     suffix=_$1
3591     shift
3592     echo $* | sed s/$suffix//g | print_in_columns
3593     exit 0
3594 }
3595
3596 rand_list(){
3597     IFS=', '
3598     set -- $*
3599     unset IFS
3600     for thing; do
3601         comp=${thing%:*}
3602         prob=${thing#$comp}
3603         prob=${prob#:}
3604         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3605         echo "prob ${prob:-0.5}"
3606         printf '%s\n' $comp
3607     done
3608 }
3609
3610 do_random(){
3611     action=$1
3612     shift
3613     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3614     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3615 }
3616
3617 for opt do
3618     optval="${opt#*=}"
3619     case "$opt" in
3620         --extra-ldflags=*)
3621             add_ldflags $optval
3622         ;;
3623         --extra-ldexeflags=*)
3624             add_ldexeflags $optval
3625         ;;
3626         --extra-ldsoflags=*)
3627             add_ldsoflags $optval
3628         ;;
3629         --extra-ldlibflags=*)
3630             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3631                  "removed in the future. Use --extra-ldsoflags instead."
3632             add_ldsoflags $optval
3633         ;;
3634         --extra-libs=*)
3635             add_extralibs $optval
3636         ;;
3637         --disable-devices)
3638             disable $INDEV_LIST $OUTDEV_LIST
3639         ;;
3640         --enable-debug=*)
3641             debuglevel="$optval"
3642         ;;
3643         --disable-programs)
3644             disable $PROGRAM_LIST
3645         ;;
3646         --disable-everything)
3647             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3648         ;;
3649         --disable-all)
3650             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3651             disable $LIBRARY_LIST $PROGRAM_LIST doc
3652             enable avutil
3653         ;;
3654         --enable-random|--disable-random)
3655             action=${opt%%-random}
3656             do_random ${action#--} $COMPONENT_LIST
3657         ;;
3658         --enable-random=*|--disable-random=*)
3659             action=${opt%%-random=*}
3660             do_random ${action#--} $optval
3661         ;;
3662         --enable-sdl)
3663             enable sdl2
3664         ;;
3665         --enable-*=*|--disable-*=*)
3666             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3667             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3668             eval list=\$$(toupper $thing)_LIST
3669             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3670             list=$(filter "$name" $list)
3671             [ "$list" = "" ] && warn "Option $opt did not match anything"
3672             $action $list
3673         ;;
3674         --enable-yasm|--disable-yasm)
3675             warn "The ${opt} option is only provided for compatibility and will be\n"\
3676                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3677             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3678         ;;
3679         --yasmexe=*)
3680             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3681                  "removed in the future. Use --x86asmexe instead."
3682             x86asmexe="$optval"
3683         ;;
3684         --enable-?*|--disable-?*)
3685             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3686             if is_in $option $COMPONENT_LIST; then
3687                 test $action = disable && action=unset
3688                 eval $action \$$(toupper ${option%s})_LIST
3689             elif is_in $option $CMDLINE_SELECT; then
3690                 $action $option
3691             else
3692                 die_unknown $opt
3693             fi
3694         ;;
3695         --list-*)
3696             NAME="${opt#--list-}"
3697             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3698             NAME=${NAME%s}
3699             eval show_list $NAME \$$(toupper $NAME)_LIST
3700         ;;
3701         --help|-h) show_help
3702         ;;
3703         --quiet|-q) quiet=yes
3704         ;;
3705         --fatal-warnings) enable fatal_warnings
3706         ;;
3707         --libfuzzer=*)
3708             libfuzzer_path="$optval"
3709         ;;
3710         *)
3711             optname="${opt%%=*}"
3712             optname="${optname#--}"
3713             optname=$(echo "$optname" | sed 's/-/_/g')
3714             if is_in $optname $CMDLINE_SET; then
3715                 eval $optname='$optval'
3716             elif is_in $optname $CMDLINE_APPEND; then
3717                 append $optname "$optval"
3718             else
3719                 die_unknown $opt
3720             fi
3721         ;;
3722     esac
3723 done
3724
3725 for e in $env; do
3726     eval "export $e"
3727 done
3728
3729 if disabled autodetect; then
3730
3731     # Unless iconv is explicitely disabled by the user, we still want to probe
3732     # for the iconv from the libc.
3733     disabled iconv || enable libc_iconv
3734
3735     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3736     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3737 fi
3738 # Mark specifically enabled, but normally autodetected libraries as requested.
3739 for lib in $AUTODETECT_LIBS; do
3740     enabled $lib && request $lib
3741 done
3742 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3743 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3744 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3745
3746 disabled logging && logfile=/dev/null
3747
3748 # command line configuration sanity checks
3749
3750 # we need to build at least one lib type
3751 if ! enabled_any static shared; then
3752     cat <<EOF
3753 At least one library type must be built.
3754 Specify --enable-static to build the static libraries or --enable-shared to
3755 build the shared libraries as well. To only build the shared libraries specify
3756 --disable-static in addition to --enable-shared.
3757 EOF
3758     exit 1
3759 fi
3760
3761 die_license_disabled() {
3762     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3763 }
3764
3765 die_license_disabled_gpl() {
3766     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3767 }
3768
3769 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3770 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3771
3772 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3773 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3774
3775 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3776
3777 enabled_all gnutls openssl &&
3778     die "GnuTLS and OpenSSL must not be enabled at the same time."
3779
3780 # Disable all the library-specific components if the library itself
3781 # is disabled, see AVCODEC_LIST and following _LIST variables.
3782
3783 disable_components(){
3784     disabled ${1} && disable $(
3785         eval components="\$$(toupper ${1})_COMPONENTS"
3786         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3787     )
3788 }
3789
3790 map 'disable_components $v' $LIBRARY_LIST
3791
3792 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3793 set >> $logfile
3794
3795 test -n "$valgrind" && toolchain="valgrind-memcheck"
3796
3797 enabled ossfuzz && {
3798     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3799     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3800 }
3801
3802 case "$toolchain" in
3803     *-asan)
3804         cc_default="${toolchain%-asan}"
3805         add_cflags  -fsanitize=address
3806         add_ldflags -fsanitize=address
3807     ;;
3808     *-msan)
3809         cc_default="${toolchain%-msan}"
3810         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3811         add_ldflags -fsanitize=memory
3812     ;;
3813     *-tsan)
3814         cc_default="${toolchain%-tsan}"
3815         add_cflags  -fsanitize=thread -fPIE
3816         add_ldflags -fsanitize=thread -pie
3817         case "$toolchain" in
3818             gcc-tsan)
3819                 add_cflags  -fPIC
3820                 add_ldflags -fPIC
3821                 ;;
3822         esac
3823     ;;
3824     *-usan)
3825         cc_default="${toolchain%-usan}"
3826         add_cflags  -fsanitize=undefined
3827         add_ldflags -fsanitize=undefined
3828     ;;
3829     valgrind-*)
3830         target_exec_default="valgrind"
3831         case "$toolchain" in
3832             valgrind-massif)
3833                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3834                 ;;
3835             valgrind-memcheck)
3836                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3837                 ;;
3838         esac
3839     ;;
3840     msvc)
3841         # Check whether the current MSVC version needs the C99 converter.
3842         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3843         # support enough of C99 to build ffmpeg. Default to the new
3844         # behaviour if the regexp was unable to match anything, since this
3845         # successfully parses the version number of existing supported
3846         # versions that require the converter (MSVC 2010 and 2012).
3847         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3848         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3849             cc_default="cl"
3850             cxx_default="cl"
3851         else
3852             cc_default="c99wrap cl"
3853             cxx_default="c99wrap cl"
3854         fi
3855         ld_default="$source_path/compat/windows/mslink"
3856         nm_default="dumpbin -symbols"
3857         ar_default="lib"
3858         case "$arch" in
3859         aarch64|arm64)
3860             as_default="armasm64"
3861             ;;
3862         arm*)
3863             as_default="armasm"
3864             ;;
3865         esac
3866         target_os_default="win32"
3867         # Use a relative path for TMPDIR. This makes sure all the
3868         # ffconf temp files are written with a relative path, avoiding
3869         # issues with msys/win32 path conversion for MSVC parameters
3870         # such as -Fo<file> or -out:<file>.
3871         TMPDIR=.
3872     ;;
3873     icl)
3874         cc_default="icl"
3875         ld_default="xilink"
3876         nm_default="dumpbin -symbols"
3877         ar_default="xilib"
3878         target_os_default="win32"
3879         TMPDIR=.
3880     ;;
3881     gcov)
3882         add_cflags  -fprofile-arcs -ftest-coverage
3883         add_ldflags -fprofile-arcs -ftest-coverage
3884     ;;
3885     llvm-cov)
3886         add_cflags -fprofile-arcs -ftest-coverage
3887         add_ldflags --coverage
3888     ;;
3889     hardened)
3890         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3891         add_cflags   -fno-strict-overflow -fstack-protector-all
3892         add_ldflags  -Wl,-z,relro -Wl,-z,now
3893         add_cflags   -fPIE
3894         add_ldexeflags -fPIE -pie
3895     ;;
3896     ?*)
3897         die "Unknown toolchain $toolchain"
3898     ;;
3899 esac
3900
3901 if test -n "$cross_prefix"; then
3902     test -n "$arch" && test -n "$target_os" ||
3903         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3904     enable cross_compile
3905 fi
3906
3907 ar_default="${cross_prefix}${ar_default}"
3908 cc_default="${cross_prefix}${cc_default}"
3909 cxx_default="${cross_prefix}${cxx_default}"
3910 nm_default="${cross_prefix}${nm_default}"
3911 pkg_config_default="${cross_prefix}${pkg_config_default}"
3912 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3913     ranlib_default="${cross_prefix}${ranlib_default} -D"
3914 else
3915     ranlib_default="${cross_prefix}${ranlib_default}"
3916 fi
3917 strip_default="${cross_prefix}${strip_default}"
3918 windres_default="${cross_prefix}${windres_default}"
3919
3920 sysinclude_default="${sysroot}/usr/include"
3921
3922 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3923     target_exec target_os x86asmexe nvcc
3924 enabled cross_compile || host_cc_default=$cc
3925 set_default host_cc
3926
3927 pkg_config_fail_message=""
3928 if ! $pkg_config --version >/dev/null 2>&1; then
3929     warn "$pkg_config not found, library detection may fail."
3930     pkg_config=false
3931 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3932     pkg_config_fail_message="
3933 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3934 fi
3935
3936 if test $doxygen != $doxygen_default && \
3937   ! $doxygen --version >/dev/null 2>&1; then
3938     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3939 fi
3940
3941 exesuf() {
3942     case $1 in
3943         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3944     esac
3945 }
3946
3947 EXESUF=$(exesuf $target_os)
3948 HOSTEXESUF=$(exesuf $host_os)
3949
3950 # set temporary file name
3951 : ${TMPDIR:=$TEMPDIR}
3952 : ${TMPDIR:=$TMP}
3953 : ${TMPDIR:=/tmp}
3954
3955 if [ -n "$tempprefix" ] ; then
3956     mktemp(){
3957         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3958         echo "$tmpname"
3959         mkdir "$tmpname"
3960     }
3961 elif ! check_cmd mktemp -u XXXXXX; then
3962     # simple replacement for missing mktemp
3963     # NOT SAFE FOR GENERAL USE
3964     mktemp(){
3965         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3966         echo "$tmpname"
3967         mkdir "$tmpname"
3968     }
3969 fi
3970
3971 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3972     die "Unable to create temporary directory in $TMPDIR."
3973
3974 tmpfile(){
3975     tmp="${FFTMPDIR}/test"$2
3976     (set -C; exec > $tmp) 2> /dev/null ||
3977         die "Unable to create temporary file in $FFTMPDIR."
3978     eval $1=$tmp
3979 }
3980
3981 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3982 trap 'exit 2' INT
3983
3984 tmpfile TMPASM .asm
3985 tmpfile TMPC   .c
3986 tmpfile TMPCPP .cpp
3987 tmpfile TMPE   $EXESUF
3988 tmpfile TMPH   .h
3989 tmpfile TMPM   .m
3990 tmpfile TMPO   .o
3991 tmpfile TMPS   .S
3992 tmpfile TMPSH  .sh
3993 tmpfile TMPV   .ver
3994
3995 unset -f mktemp
3996
3997 chmod +x $TMPE
3998
3999 # make sure we can execute files in $TMPDIR
4000 cat > $TMPSH 2>> $logfile <<EOF
4001 #! /bin/sh
4002 EOF
4003 chmod +x $TMPSH >> $logfile 2>&1
4004 if ! $TMPSH >> $logfile 2>&1; then
4005     cat <<EOF
4006 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4007 variable to another directory and make sure that it is not mounted noexec.
4008 EOF
4009     die "Sanity test failed."
4010 fi
4011
4012 armasm_flags(){
4013     for flag; do
4014         case $flag in
4015             # Filter out MSVC cl.exe options from cflags that shouldn't
4016             # be passed to gas-preprocessor
4017             -M[TD]*)                                            ;;
4018             *)                  echo $flag                      ;;
4019         esac
4020    done
4021 }
4022
4023 cparser_flags(){
4024     for flag; do
4025         case $flag in
4026             -Wno-switch)             echo -Wno-switch-enum ;;
4027             -Wno-format-zero-length) ;;
4028             -Wdisabled-optimization) ;;
4029             -Wno-pointer-sign)       echo -Wno-other ;;
4030             *)                       echo $flag ;;
4031         esac
4032     done
4033 }
4034
4035 msvc_common_flags(){
4036     for flag; do
4037         case $flag in
4038             # In addition to specifying certain flags under the compiler
4039             # specific filters, they must be specified here as well or else the
4040             # generic catch all at the bottom will print the original flag.
4041             -Wall)                ;;
4042             -Wextra)              ;;
4043             -std=c99)             ;;
4044             # Common flags
4045             -fomit-frame-pointer) ;;
4046             -g)                   echo -Z7 ;;
4047             -fno-math-errno)      ;;
4048             -fno-common)          ;;
4049             -fno-signed-zeros)    ;;
4050             -fPIC)                ;;
4051             -mthumb)              ;;
4052             -march=*)             ;;
4053             -lz)                  echo zlib.lib ;;
4054             -lx264)               echo libx264.lib ;;
4055             -lstdc++)             ;;
4056             -l*)                  echo ${flag#-l}.lib ;;
4057             -LARGEADDRESSAWARE)   echo $flag ;;
4058             -L*)                  echo -libpath:${flag#-L} ;;
4059             *)                    echo $flag ;;
4060         esac
4061     done
4062 }
4063
4064 msvc_flags(){
4065     msvc_common_flags "$@"
4066     for flag; do
4067         case $flag in
4068             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4069                                        -wd4554 ;;
4070             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4071                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4072                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4073                                        -wd4307 \
4074                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4075         esac
4076     done
4077 }
4078
4079 icl_flags(){
4080     msvc_common_flags "$@"
4081     for flag; do
4082         case $flag in
4083             # Despite what Intel's documentation says -Wall, which is supported
4084             # on Windows, does enable remarks so disable them here.
4085             -Wall)                echo $flag -Qdiag-disable:remark ;;
4086             -std=c99)             echo -Qstd=c99 ;;
4087             -flto)                echo -ipo ;;
4088         esac
4089     done
4090 }
4091
4092 icc_flags(){
4093     for flag; do
4094         case $flag in
4095             -flto)                echo -ipo ;;
4096             *)                    echo $flag ;;
4097         esac
4098     done
4099 }
4100
4101 suncc_flags(){
4102     for flag; do
4103         case $flag in
4104             -march=*|-mcpu=*)
4105                 case "${flag#*=}" in
4106                     native)                   echo -xtarget=native       ;;
4107                     v9|niagara)               echo -xarch=sparc          ;;
4108                     ultrasparc)               echo -xarch=sparcvis       ;;
4109                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4110                     i586|pentium)             echo -xchip=pentium        ;;
4111                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4112                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4113                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4114                     pentium4*)          echo -xtarget=pentium4           ;;
4115                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4116                     *-sse3)             echo -xarch=sse3                 ;;
4117                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4118                     bonnell)                   echo -xarch=ssse3         ;;
4119                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4120                     westmere)                  echo -xtarget=westmere    ;;
4121                     silvermont)                echo -xarch=sse4_2        ;;
4122                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4123                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4124                                                echo -xarch=avx           ;;
4125                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4126                     btver1)                    echo -xarch=amdsse4a      ;;
4127                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4128                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4129                     k8|opteron|athlon64|athlon-fx)
4130                                                echo -xarch=sse2a         ;;
4131                     athlon*)                   echo -xarch=pentium_proa  ;;
4132                 esac
4133                 ;;
4134             -std=c99)             echo -xc99              ;;
4135             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4136             -fPIC)                echo -KPIC -xcode=pic32 ;;
4137             -W*,*)                echo $flag              ;;
4138             -f*-*|-W*|-mimpure-text)                      ;;
4139             -shared)              echo -G                 ;;
4140             *)                    echo $flag              ;;
4141         esac
4142     done
4143 }
4144
4145 probe_cc(){
4146     pfx=$1
4147     _cc=$2
4148     first=$3
4149
4150     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4151     unset _ld_o _ldflags _ld_lib _ld_path
4152     unset _depflags _DEPCMD _DEPFLAGS
4153     _flags_filter=echo
4154
4155     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4156         true # no-op to avoid reading stdin in following checks
4157     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4158         _type=llvm_gcc
4159         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4160         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4161         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4162         _cflags_speed='-O3'
4163         _cflags_size='-Os'
4164     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4165         _type=gcc
4166         gcc_version=$($_cc --version | head -n1)
4167         gcc_basever=$($_cc -dumpversion)
4168         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4169         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4170         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4171         case $gcc_basever in
4172             2) ;;
4173             2.*) ;;
4174             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4175         esac
4176         if [ "$first" = true ]; then
4177             case $gcc_basever in
4178                 4.2*)
4179                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4180             esac
4181         fi
4182         _cflags_speed='-O3'
4183         _cflags_size='-Os'
4184     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4185         _type=icc
4186         _ident=$($_cc --version | head -n1)
4187         _depflags='-MMD'
4188         _cflags_speed='-O3'
4189         _cflags_size='-Os'
4190         _cflags_noopt='-O1'
4191         _flags_filter=icc_flags
4192     elif $_cc -v 2>&1 | grep -q xlc; then
4193         _type=xlc
4194         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4195         _cflags_speed='-O5'
4196         _cflags_size='-O5 -qcompact'
4197     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4198         test -d "$sysroot" || die "No valid sysroot specified."
4199         _type=armcc
4200         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4201         armcc_conf="$PWD/armcc.conf"
4202         $_cc --arm_linux_configure                 \
4203              --arm_linux_config_file="$armcc_conf" \
4204              --configure_sysroot="$sysroot"        \
4205              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4206              die "Error creating armcc configuration file."
4207         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4208         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4209         as_default="${cross_prefix}gcc"
4210         _depflags='-MMD'
4211         _cflags_speed='-O3'
4212         _cflags_size='-Os'
4213     elif $_cc -v 2>&1 | grep -q clang; then
4214         _type=clang
4215         _ident=$($_cc --version 2>/dev/null | head -n1)
4216         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4217         _cflags_speed='-O3'
4218         _cflags_size='-Oz'
4219     elif $_cc -V 2>&1 | grep -q Sun; then
4220         _type=suncc
4221         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4222         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4223         _DEPFLAGS='-xM1 -xc99'
4224         _ldflags='-std=c99'
4225         _cflags_speed='-O5'
4226         _cflags_size='-O5 -xspace'
4227         _flags_filter=suncc_flags
4228     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4229         _type=pathscale
4230         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4231         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4232         _cflags_speed='-O2'
4233         _cflags_size='-Os'
4234         _flags_filter='filter_out -Wdisabled-optimization'
4235     elif $_cc -v 2>&1 | grep -q Open64; then
4236         _type=open64
4237         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4238         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4239         _cflags_speed='-O2'
4240         _cflags_size='-Os'
4241         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4242     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4243         _type=armasm
4244         _ident=$($_cc | head -n1)
4245         # 4509: "This form of conditional instruction is deprecated"
4246         _flags="-nologo -ignore 4509"
4247         _flags_filter=armasm_flags
4248     elif $_cc 2>&1 | grep -q Intel; then
4249         _type=icl
4250         _ident=$($_cc 2>&1 | head -n1)
4251         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4252         # Not only is O3 broken on 13.x+ but it is slower on all previous
4253         # versions (tested) as well.
4254         _cflags_speed="-O2"
4255         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4256         if $_cc 2>&1 | grep -q Linker; then
4257             _ld_o='-out:$@'
4258         else
4259             _ld_o='-Fe$@'
4260         fi
4261         _cc_o='-Fo$@'
4262         _cc_e='-P'
4263         _flags_filter=icl_flags
4264         _ld_lib='lib%.a'
4265         _ld_path='-libpath:'
4266         # -Qdiag-error to make icl error when seeing certain unknown arguments
4267         _flags='-nologo -Qdiag-error:4044,10157'
4268         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4269         # with MSVC which enables it by default.
4270         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4271         disable stripping
4272     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4273         # lld can emulate multiple different linkers; in ms link.exe mode,
4274         # the -? parameter gives the help output which contains an identifyable
4275         # string, while it gives an error in other modes.
4276         _type=lld-link
4277         # The link.exe mode doesn't have a switch for getting the version,
4278         # but we can force it back to gnu mode and get the version from there.
4279         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4280         _ld_o='-out:$@'
4281         _flags_filter=msvc_flags
4282         _ld_lib='lib%.a'
4283         _ld_path='-libpath:'
4284     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4285         _type=msvc
4286         _ident=$($_cc 2>&1 | head -n1)
4287         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4288         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4289         _cflags_speed="-O2"
4290         _cflags_size="-O1"
4291         _cflags_noopt="-O1"
4292         if $_cc -nologo- 2>&1 | grep -q Linker; then
4293             _ld_o='-out:$@'
4294         else
4295             _ld_o='-Fe$@'
4296         fi
4297         _cc_o='-Fo$@'
4298         _cc_e='-P -Fi$@'
4299         _flags_filter=msvc_flags
4300         _ld_lib='lib%.a'
4301         _ld_path='-libpath:'
4302         _flags='-nologo'
4303         disable stripping
4304     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4305         _type=cparser
4306         _ident=$($_cc --version | head -n1)
4307         _depflags='-MMD'
4308         _cflags_speed='-O4'
4309         _cflags_size='-O2'
4310         _flags_filter=cparser_flags
4311     fi
4312
4313     eval ${pfx}_type=\$_type
4314     eval ${pfx}_ident=\$_ident
4315 }
4316
4317 set_ccvars(){
4318     eval ${1}_C=\${_cc_c-\${${1}_C}}
4319     eval ${1}_E=\${_cc_e-\${${1}_E}}
4320     eval ${1}_O=\${_cc_o-\${${1}_O}}
4321
4322     if [ -n "$_depflags" ]; then
4323         eval ${1}_DEPFLAGS=\$_depflags
4324     else
4325         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4326         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4327         eval DEP${1}FLAGS=\$_flags
4328     fi
4329 }
4330
4331 probe_cc cc "$cc" "true"
4332 cflags_filter=$_flags_filter
4333 cflags_speed=$_cflags_speed
4334 cflags_size=$_cflags_size
4335 cflags_noopt=$_cflags_noopt
4336 add_cflags $_flags $_cflags
4337 cc_ldflags=$_ldflags
4338 set_ccvars CC
4339 set_ccvars CXX
4340
4341 probe_cc hostcc "$host_cc"
4342 host_cflags_filter=$_flags_filter
4343 host_cflags_speed=$_cflags_speed
4344 add_host_cflags  $_flags $_cflags
4345 set_ccvars HOSTCC
4346
4347 test -n "$cc_type" && enable $cc_type ||
4348     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4349
4350 : ${as_default:=$cc}
4351 : ${objcc_default:=$cc}
4352 : ${dep_cc_default:=$cc}
4353 : ${ld_default:=$cc}
4354 : ${host_ld_default:=$host_cc}
4355 set_default ar as objcc dep_cc ld ln_s host_ld windres
4356
4357 probe_cc as "$as"
4358 asflags_filter=$_flags_filter
4359 add_asflags $_flags $_cflags
4360 set_ccvars AS
4361
4362 probe_cc objcc "$objcc"
4363 objcflags_filter=$_flags_filter
4364 add_objcflags $_flags $_cflags
4365 set_ccvars OBJC
4366
4367 probe_cc ld "$ld"
4368 ldflags_filter=$_flags_filter
4369 add_ldflags $_flags $_ldflags
4370 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4371 LD_O=${_ld_o-$LD_O}
4372 LD_LIB=${_ld_lib-$LD_LIB}
4373 LD_PATH=${_ld_path-$LD_PATH}
4374
4375 probe_cc hostld "$host_ld"
4376 host_ldflags_filter=$_flags_filter
4377 add_host_ldflags $_flags $_ldflags
4378 HOSTLD_O=${_ld_o-$HOSTLD_O}
4379
4380 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4381     probe_cc depcc "$dep_cc"
4382     CCDEP=${_DEPCMD:-$DEPCMD}
4383     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4384     DEPCCFLAGS=$_flags
4385 fi
4386
4387 if $ar 2>&1 | grep -q Microsoft; then
4388     arflags="-nologo"
4389     ar_o='-out:$@'
4390 elif $ar 2>&1 | grep -q "\[D\] "; then
4391     arflags="rcD"
4392     ar_o='$@'
4393 else
4394     arflags="rc"
4395     ar_o='$@'
4396 fi
4397
4398 add_cflags $extra_cflags
4399 add_cxxflags $extra_cxxflags
4400 add_objcflags $extra_objcflags
4401 add_asflags $extra_cflags
4402
4403 if test -n "$sysroot"; then
4404     case "$cc_type" in
4405         gcc|llvm_gcc|clang)
4406             add_cppflags --sysroot="$sysroot"
4407             add_ldflags --sysroot="$sysroot"
4408         ;;
4409     esac
4410 fi
4411
4412 if test "$cpu" = host; then
4413     enabled cross_compile &&
4414         die "--cpu=host makes no sense when cross-compiling."
4415
4416     case "$cc_type" in
4417         gcc|llvm_gcc)
4418             check_native(){
4419                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4420                 sed -n "/cc1.*$1=/{
4421                             s/.*$1=\\([^ ]*\\).*/\\1/
4422                             p
4423                             q
4424                         }" $TMPE
4425             }
4426             cpu=$(check_native -march || check_native -mcpu)
4427         ;;
4428         clang)
4429             check_native(){
4430                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4431                 sed -n "/cc1.*-target-cpu /{
4432                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4433                             p
4434                             q
4435                         }" $TMPE
4436             }
4437             cpu=$(check_native -march)
4438         ;;
4439     esac
4440
4441     test "${cpu:-host}" = host &&
4442         die "--cpu=host not supported with compiler $cc"
4443 fi
4444
4445 # Deal with common $arch aliases
4446 case "$arch" in
4447     aarch64|arm64)
4448         arch="aarch64"
4449     ;;
4450     arm*|iPad*|iPhone*)
4451         arch="arm"
4452     ;;
4453     mips*|IP*)
4454         case "$arch" in
4455         *el)
4456             add_cppflags -EL
4457             add_ldflags -EL
4458         ;;
4459         *eb)
4460             add_cppflags -EB
4461             add_ldflags -EB
4462         ;;
4463         esac
4464         arch="mips"
4465     ;;
4466     parisc*|hppa*)
4467         arch="parisc"
4468     ;;
4469     "Power Macintosh"|ppc*|powerpc*)
4470         arch="ppc"
4471     ;;
4472     s390|s390x)
4473         arch="s390"
4474     ;;
4475     sh4|sh)
4476         arch="sh4"
4477     ;;
4478     sun4*|sparc*)
4479         arch="sparc"
4480     ;;
4481     tilegx|tile-gx)
4482         arch="tilegx"
4483     ;;
4484     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4485         arch="x86"
4486     ;;
4487 esac
4488
4489 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4490 enable $arch
4491
4492 # Add processor-specific flags
4493 if enabled aarch64; then
4494
4495     case $cpu in
4496         armv*)
4497             cpuflags="-march=$cpu"
4498         ;;
4499         *)
4500             cpuflags="-mcpu=$cpu"
4501         ;;
4502     esac
4503
4504 elif enabled alpha; then
4505
4506     cpuflags="-mcpu=$cpu"
4507
4508 elif enabled arm; then
4509
4510     check_arm_arch() {
4511         check_cpp_condition stddef.h \
4512             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4513             $cpuflags
4514     }
4515
4516     probe_arm_arch() {
4517         if   check_arm_arch 4;        then echo armv4
4518         elif check_arm_arch 4T;       then echo armv4t
4519         elif check_arm_arch 5;        then echo armv5
4520         elif check_arm_arch 5E;       then echo armv5e
4521         elif check_arm_arch 5T;       then echo armv5t
4522         elif check_arm_arch 5TE;      then echo armv5te
4523         elif check_arm_arch 5TEJ;     then echo armv5te
4524         elif check_arm_arch 6;        then echo armv6
4525         elif check_arm_arch 6J;       then echo armv6j
4526         elif check_arm_arch 6K;       then echo armv6k
4527         elif check_arm_arch 6Z;       then echo armv6z
4528         elif check_arm_arch 6KZ;      then echo armv6zk
4529         elif check_arm_arch 6ZK;      then echo armv6zk
4530         elif check_arm_arch 6T2;      then echo armv6t2
4531         elif check_arm_arch 7;        then echo armv7
4532         elif check_arm_arch 7A  7_A;  then echo armv7-a
4533         elif check_arm_arch 7S;       then echo armv7-a
4534         elif check_arm_arch 7R  7_R;  then echo armv7-r
4535         elif check_arm_arch 7M  7_M;  then echo armv7-m
4536         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4537         elif check_arm_arch 8A  8_A;  then echo armv8-a
4538         fi
4539     }
4540
4541     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4542
4543     case $cpu in
4544         armv*)
4545             cpuflags="-march=$cpu"
4546             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4547         ;;
4548         *)
4549             cpuflags="-mcpu=$cpu"
4550             case $cpu in
4551                 cortex-a*)                               subarch=armv7a  ;;
4552                 cortex-r*)                               subarch=armv7r  ;;
4553                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4554                 arm11*)                                  subarch=armv6   ;;
4555                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4556                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4557                 *)                             subarch=$(probe_arm_arch) ;;
4558             esac
4559         ;;
4560     esac
4561
4562     case "$subarch" in
4563         armv5t*)    enable fast_clz                ;;
4564         armv[6-8]*)
4565             enable fast_clz
4566             disabled fast_unaligned || enable fast_unaligned
4567             ;;
4568     esac
4569
4570 elif enabled avr32; then
4571
4572     case $cpu in
4573         ap7[02]0[0-2])
4574             subarch="avr32_ap"
4575             cpuflags="-mpart=$cpu"
4576         ;;
4577         ap)
4578             subarch="avr32_ap"
4579             cpuflags="-march=$cpu"
4580         ;;
4581         uc3[ab]*)
4582             subarch="avr32_uc"
4583             cpuflags="-mcpu=$cpu"
4584         ;;
4585         uc)
4586             subarch="avr32_uc"
4587             cpuflags="-march=$cpu"
4588         ;;
4589     esac
4590
4591 elif enabled bfin; then
4592
4593     cpuflags="-mcpu=$cpu"
4594
4595 elif enabled mips; then
4596
4597     cpuflags="-march=$cpu"
4598
4599     if [ "$cpu" != "generic" ]; then
4600         disable mips32r2
4601         disable mips32r5
4602         disable mips64r2
4603         disable mips32r6
4604         disable mips64r6
4605         disable loongson2
4606         disable loongson3
4607
4608         case $cpu in
4609             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4610                 enable mips32r2
4611                 disable msa
4612             ;;
4613             p5600|i6400|p6600)
4614                 disable mipsdsp
4615                 disable mipsdspr2
4616             ;;
4617             loongson*)
4618                 enable loongson2
4619                 enable loongson3
4620                 enable local_aligned
4621                 enable simd_align_16
4622                 enable fast_64bit
4623                 enable fast_clz
4624                 enable fast_cmov
4625                 enable fast_unaligned
4626                 disable aligned_stack
4627                 disable mipsfpu
4628                 disable mipsdsp
4629                 disable mipsdspr2
4630                 case $cpu in
4631                     loongson3*)
4632                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4633                     ;;
4634                     loongson2e)
4635                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4636                     ;;
4637                     loongson2f)
4638                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4639                     ;;
4640                 esac
4641             ;;
4642             *)
4643                 # Unknown CPU. Disable everything.
4644                 warn "unknown CPU. Disabling all MIPS optimizations."
4645                 disable mipsfpu
4646                 disable mipsdsp
4647                 disable mipsdspr2
4648                 disable msa
4649                 disable mmi
4650             ;;
4651         esac
4652
4653         case $cpu in
4654             24kc)
4655                 disable mipsfpu
4656                 disable mipsdsp
4657                 disable mipsdspr2
4658             ;;
4659             24kf*)
4660                 disable mipsdsp
4661                 disable mipsdspr2
4662             ;;
4663             24kec|34kc|1004kc)
4664                 disable mipsfpu
4665                 disable mipsdspr2
4666             ;;
4667             24kef*|34kf*|1004kf*)
4668                 disable mipsdspr2
4669             ;;
4670             74kc)
4671                 disable mipsfpu
4672             ;;
4673             p5600)
4674                 enable mips32r5
4675                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4676             ;;
4677             i6400)
4678                 enable mips64r6
4679                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4680             ;;
4681             p6600)
4682                 enable mips64r6
4683                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4684             ;;
4685         esac
4686     else
4687         # We do not disable anything. Is up to the user to disable the unwanted features.
4688         warn 'generic cpu selected'
4689     fi
4690
4691 elif enabled ppc; then
4692
4693     disable ldbrx
4694
4695     case $(tolower $cpu) in
4696         601|ppc601|powerpc601)
4697             cpuflags="-mcpu=601"
4698             disable altivec
4699         ;;
4700         603*|ppc603*|powerpc603*)
4701             cpuflags="-mcpu=603"
4702             disable altivec
4703         ;;
4704         604*|ppc604*|powerpc604*)
4705             cpuflags="-mcpu=604"
4706             disable altivec
4707         ;;
4708         g3|75*|ppc75*|powerpc75*)
4709             cpuflags="-mcpu=750"
4710             disable altivec
4711         ;;
4712         g4|745*|ppc745*|powerpc745*)
4713             cpuflags="-mcpu=7450"
4714             disable vsx
4715         ;;
4716         74*|ppc74*|powerpc74*)
4717             cpuflags="-mcpu=7400"
4718             disable vsx
4719         ;;
4720         g5|970|ppc970|powerpc970)
4721             cpuflags="-mcpu=970"
4722             disable vsx
4723         ;;
4724         power[3-6]*)
4725             cpuflags="-mcpu=$cpu"
4726             disable vsx
4727         ;;
4728         power[7-8]*)
4729             cpuflags="-mcpu=$cpu"
4730         ;;
4731         cell)
4732             cpuflags="-mcpu=cell"
4733             enable ldbrx
4734             disable vsx
4735         ;;
4736         e500mc)
4737             cpuflags="-mcpu=e500mc"
4738             disable altivec
4739         ;;
4740         e500v2)
4741             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4742             disable altivec
4743             disable dcbzl
4744         ;;
4745         e500)
4746             cpuflags="-mcpu=8540 -mhard-float"
4747             disable altivec
4748             disable dcbzl
4749         ;;
4750     esac
4751
4752 elif enabled sparc; then
4753
4754     case $cpu in
4755         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4756             cpuflags="-mcpu=$cpu"
4757         ;;
4758         ultrasparc*|niagara[234])
4759             cpuflags="-mcpu=$cpu"
4760         ;;
4761     esac
4762
4763 elif enabled x86; then
4764
4765     case $cpu in
4766         i[345]86|pentium)
4767             cpuflags="-march=$cpu"
4768             disable i686
4769             disable mmx
4770         ;;
4771         # targets that do NOT support nopl and conditional mov (cmov)
4772         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4773             cpuflags="-march=$cpu"
4774             disable i686
4775         ;;
4776         # targets that do support nopl and conditional mov (cmov)
4777         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4778         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4779         |amdfam10|barcelona|b[dt]ver*|znver*)
4780             cpuflags="-march=$cpu"
4781             enable i686
4782             enable fast_cmov
4783         ;;
4784         # targets that do support conditional mov but on which it's slow
4785         pentium4|pentium4m|prescott|nocona)
4786             cpuflags="-march=$cpu"
4787             enable i686
4788             disable fast_cmov
4789         ;;
4790     esac
4791
4792 fi
4793
4794 if [ "$cpu" != generic ]; then
4795     add_cflags  $cpuflags
4796     add_asflags $cpuflags
4797     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4798 fi
4799
4800 # compiler sanity check
4801 check_exec <<EOF
4802 int main(void){ return 0; }
4803 EOF
4804 if test "$?" != 0; then
4805     echo "$cc is unable to create an executable file."
4806     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4807         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4808         echo "Only do this if you know what cross compiling means."
4809     fi
4810     die "C compiler test failed."
4811 fi
4812
4813 add_cppflags -D_ISOC99_SOURCE
4814 add_cxxflags -D__STDC_CONSTANT_MACROS
4815 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4816
4817 # some compilers silently accept -std=c11, so we also need to check that the
4818 # version macro is defined properly
4819 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4820     add_cflags -std=c11 ||
4821     check_cflags -std=c99
4822
4823 check_cppflags -D_FILE_OFFSET_BITS=64
4824 check_cppflags -D_LARGEFILE_SOURCE
4825
4826 add_host_cppflags -D_ISOC99_SOURCE
4827 check_host_cflags -std=c99
4828 check_host_cflags -Wall
4829 check_host_cflags $host_cflags_speed
4830
4831 check_64bit(){
4832     arch32=$1
4833     arch64=$2
4834     expr=$3
4835     check_code cc "" "int test[2*($expr) - 1]" &&
4836         subarch=$arch64 || subarch=$arch32
4837     enable $subarch
4838 }
4839
4840 case "$arch" in
4841     aarch64|alpha|ia64)
4842         enabled shared && enable_weak pic
4843     ;;
4844     mips)
4845         check_64bit mips mips64 '_MIPS_SIM > 1'
4846         enabled shared && enable_weak pic
4847     ;;
4848     parisc)
4849         check_64bit parisc parisc64 'sizeof(void *) > 4'
4850         enabled shared && enable_weak pic
4851     ;;
4852     ppc)
4853         check_64bit ppc ppc64 'sizeof(void *) > 4'
4854         enabled shared && enable_weak pic
4855     ;;
4856     s390)
4857         check_64bit s390 s390x 'sizeof(void *) > 4'
4858         enabled shared && enable_weak pic
4859     ;;
4860     sparc)
4861         check_64bit sparc sparc64 'sizeof(void *) > 4'
4862         enabled shared && enable_weak pic
4863     ;;
4864     x86)
4865         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4866         # Treat x32 as x64 for now. Note it also needs pic if shared
4867         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4868             subarch=x86_64 && enable x86_64 && disable x86_32
4869         if enabled x86_64; then
4870             enabled shared && enable_weak pic
4871             objformat=elf64
4872         fi
4873     ;;
4874 esac
4875
4876 # OS specific
4877 case $target_os in
4878     aix)
4879         SHFLAGS=-shared
4880         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4881         enabled shared && add_ldflags -Wl,-brtl
4882         arflags='-Xany -r -c'
4883         ;;
4884     android)
4885         disable symver
4886         enable section_data_rel_ro
4887         SLIB_INSTALL_NAME='$(SLIBNAME)'
4888         SLIB_INSTALL_LINKS=
4889         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4890         ;;
4891     haiku)
4892         prefix_default="/boot/common"
4893         network_extralibs="-lnetwork"
4894         host_extralibs=
4895         ;;
4896     sunos)
4897         SHFLAGS='-shared -Wl,-h,$$(@F)'
4898         enabled x86 && append SHFLAGS -mimpure-text
4899         network_extralibs="-lsocket -lnsl"
4900         add_cppflags