doc/APIchanges: Fix lavu versions for OpenCL changes
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
189
190 External library support:
191
192   Using any of the following switches will allow FFmpeg to link to the
193   corresponding external library. All the components depending on that library
194   will become enabled, if all their other dependencies are met and they are not
195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
196   libwavpack and allow the libwavpack encoder to be built, unless it is
197   specifically disabled with --disable-encoder=libwavpack.
198
199   Note that only the system libraries are auto-detected. All the other external
200   libraries must be explicitly enabled.
201
202   Also note that the following help text describes the purpose of the libraries
203   themselves, not all their features will necessarily be usable by FFmpeg.
204
205   --disable-alsa           disable ALSA support [autodetect]
206   --disable-appkit         disable Apple AppKit framework [autodetect]
207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
208   --enable-avisynth        enable reading of AviSynth script files [no]
209   --disable-bzlib          disable bzlib [autodetect]
210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
212   --enable-frei0r          enable frei0r video filtering [no]
213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
214                            if openssl, librtmp or gmp is not used [no]
215   --enable-gmp             enable gmp, needed for rtmp(t)e support
216                            if openssl or librtmp is not used [no]
217   --enable-gnutls          enable gnutls, needed for https support
218                            if openssl is not used [no]
219   --disable-iconv          disable iconv [autodetect]
220   --enable-jni             enable JNI support [no]
221   --enable-ladspa          enable LADSPA audio filtering [no]
222   --enable-libass          enable libass subtitles rendering,
223                            needed for subtitles and ass filter [no]
224   --enable-libbluray       enable BluRay reading using libbluray [no]
225   --enable-libbs2b         enable bs2b DSP library [no]
226   --enable-libcaca         enable textual display using libcaca [no]
227   --enable-libcelt         enable CELT decoding via libcelt [no]
228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
230                            and libraw1394 [no]
231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
236   --enable-libgme          enable Game Music Emu via libgme [no]
237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
240   --enable-libjack         enable JACK audio sound server [no]
241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
242   --enable-libmodplug      enable ModPlug via libmodplug [no]
243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
246   --enable-libopencv       enable video filtering via libopencv [no]
247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
250   --enable-libopus         enable Opus de/encoding via libopus [no]
251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
252   --enable-librsvg         enable SVG rasterization via librsvg [no]
253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
258   --enable-libsoxr         enable Include libsoxr resampling [no]
259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
260   --enable-libssh          enable SFTP protocol via libssh [no]
261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
262   --enable-libtheora       enable Theora encoding via libtheora [no]
263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
265   --enable-libvidstab      enable video stabilization using vid.stab [no]
266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
269                            native implementation exists [no]
270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
272   --enable-libwebp         enable WebP encoding via libwebp [no]
273   --enable-libx264         enable H.264 encoding via x264 [no]
274   --enable-libx265         enable HEVC encoding via x265 [no]
275   --enable-libxavs         enable AVS encoding via xavs [no]
276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
280   --enable-libxvid         enable Xvid encoding via xvidcore,
281                            native MPEG-4/Xvid encoder exists [no]
282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
284   --enable-libzmq          enable message passing via libzmq [no]
285   --enable-libzvbi         enable teletext support via libzvbi [no]
286   --disable-lzma           disable lzma [autodetect]
287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
289   --enable-mediacodec      enable Android MediaCodec support [no]
290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
291   --enable-openal          enable OpenAL 1.1 capture support [no]
292   --enable-opencl          enable OpenCL processing [no]
293   --enable-opengl          enable OpenGL rendering [no]
294   --enable-openssl         enable openssl, needed for https support
295                            if gnutls is not used [no]
296   --disable-sndio          disable sndio support [autodetect]
297   --disable-schannel       disable SChannel SSP, needed for TLS support on
298                            Windows if openssl and gnutls are not used [autodetect]
299   --disable-sdl2           disable sdl2 [autodetect]
300   --disable-securetransport disable Secure Transport, needed for TLS support
301                            on OSX if openssl and gnutls are not used [autodetect]
302   --disable-xlib           disable xlib [autodetect]
303   --disable-zlib           disable zlib [autodetect]
304
305   The following libraries provide various hardware acceleration features:
306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
312   --enable-libdrm          enable DRM code (Linux) [no]
313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
316   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
318   --enable-omx             enable OpenMAX IL code [no]
319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
324
325 Toolchain options:
326   --arch=ARCH              select architecture [$arch]
327   --cpu=CPU                select the minimum required CPU (affects
328                            instruction selection, may crash on older CPUs)
329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
330   --progs-suffix=SUFFIX    program name suffix []
331   --enable-cross-compile   assume a cross-compiler is used
332   --sysroot=PATH           root of cross-build tree
333   --sysinclude=PATH        location of cross-build system headers
334   --target-os=OS           compiler targets OS [$target_os]
335   --target-exec=CMD        command to run executables on target
336   --target-path=DIR        path to view of build directory on target
337   --target-samples=DIR     path to samples directory on target
338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
339   --toolchain=NAME         set tool defaults according to NAME
340   --nm=NM                  use nm tool NM [$nm_default]
341   --ar=AR                  use archive tool AR [$ar_default]
342   --as=AS                  use assembler AS [$as_default]
343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
344   --strip=STRIP            use strip tool STRIP [$strip_default]
345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
347   --cc=CC                  use C compiler CC [$cc_default]
348   --cxx=CXX                use C compiler CXX [$cxx_default]
349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
352   --ld=LD                  use linker LD [$ld_default]
353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
357   --host-cc=HOSTCC         use host C compiler HOSTCC
358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
360   --host-ld=HOSTLD         use host linker HOSTLD
361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
362   --host-libs=HLIBS        use libs HLIBS when linking for host
363   --host-os=OS             compiler host OS [$target_os]
364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
371   --extra-version=STRING   version string suffix []
372   --optflags=OPTFLAGS      override optimization-related compiler flags
373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
374   --build-suffix=SUFFIX    library name suffix []
375   --enable-pic             build position-independent code
376   --enable-thumb           compile for Thumb instruction set
377   --enable-lto             use link-time optimization
378   --env="ENV=override"     override the environment variables
379
380 Advanced options (experts only):
381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
382   --custom-allocator=NAME  use a supported custom allocator
383   --disable-symver         disable symbol versioning
384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
385   --disable-safe-bitstream-reader
386                            disable buffer boundary checking in bitreaders
387                            (faster, but may crash)
388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
389
390 Optimization options (experts only):
391   --disable-asm            disable all assembly optimizations
392   --disable-altivec        disable AltiVec optimizations
393   --disable-vsx            disable VSX optimizations
394   --disable-power8         disable POWER8 optimizations
395   --disable-amd3dnow       disable 3DNow! optimizations
396   --disable-amd3dnowext    disable 3DNow! extended optimizations
397   --disable-mmx            disable MMX optimizations
398   --disable-mmxext         disable MMXEXT optimizations
399   --disable-sse            disable SSE optimizations
400   --disable-sse2           disable SSE2 optimizations
401   --disable-sse3           disable SSE3 optimizations
402   --disable-ssse3          disable SSSE3 optimizations
403   --disable-sse4           disable SSE4 optimizations
404   --disable-sse42          disable SSE4.2 optimizations
405   --disable-avx            disable AVX optimizations
406   --disable-xop            disable XOP optimizations
407   --disable-fma3           disable FMA3 optimizations
408   --disable-fma4           disable FMA4 optimizations
409   --disable-avx2           disable AVX2 optimizations
410   --disable-aesni          disable AESNI optimizations
411   --disable-armv5te        disable armv5te optimizations
412   --disable-armv6          disable armv6 optimizations
413   --disable-armv6t2        disable armv6t2 optimizations
414   --disable-vfp            disable VFP optimizations
415   --disable-neon           disable NEON optimizations
416   --disable-inline-asm     disable use of inline assembly
417   --disable-x86asm         disable use of standalone x86 assembly
418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
420   --disable-msa            disable MSA optimizations
421   --disable-mipsfpu        disable floating point MIPS optimizations
422   --disable-mmi            disable Loongson SIMD optimizations
423   --disable-fast-unaligned consider unaligned accesses slow
424
425 Developer options (useful when working on FFmpeg itself):
426   --disable-debug          disable debugging symbols
427   --enable-debug=LEVEL     set the debug level [$debuglevel]
428   --disable-optimizations  disable compiler optimizations
429   --enable-extra-warnings  enable more compiler warnings
430   --disable-stripping      disable stripping of executables and shared libraries
431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
432                            2 causes a slowdown at runtime.
433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
435                            leaks and errors, using the specified valgrind binary.
436                            Cannot be combined with --target-exec
437   --enable-ftrapv          Trap arithmetic overflows
438   --samples=PATH           location of test samples for FATE, if not set use
439                            \$FATE_SAMPLES at make invocation time.
440   --enable-neon-clobber-test check NEON registers for clobbering (should be
441                            used only for debugging purposes)
442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
443                            should be used only for debugging purposes)
444   --enable-random          randomly enable/disable components
445   --disable-random
446   --enable-random=LIST     randomly enable/disable specific components or
447   --disable-random=LIST    component groups. LIST is a comma-separated list
448                            of NAME[:PROB] entries where NAME is a component
449                            (group) and PROB the probability associated with
450                            NAME (default 0.5).
451   --random-seed=VALUE      seed value for --enable/disable-random
452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
453                            (only applies to --disable-optimizations builds)
454   --enable-osfuzz          Enable building fuzzer tool
455   --libfuzzer=PATH         path to libfuzzer
456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
457                            in the name) of tests whose result is ignored
458   --enable-linux-perf      enable Linux Performance Monitor API
459
460 NOTE: Object files are built at the place where configure is launched.
461 EOF
462   exit 0
463 }
464
465 if test -t 1 && which tput >/dev/null 2>&1; then
466     ncolors=$(tput colors)
467     if test -n "$ncolors" && test $ncolors -ge 8; then
468         bold_color=$(tput bold)
469         warn_color=$(tput setaf 3)
470         error_color=$(tput setaf 1)
471         reset_color=$(tput sgr0)
472     fi
473     # 72 used instead of 80 since that's the default of pr
474     ncols=$(tput cols)
475 fi
476 : ${ncols:=72}
477
478 log(){
479     echo "$@" >> $logfile
480 }
481
482 log_file(){
483     log BEGIN $1
484     pr -n -t $1 >> $logfile
485     log END $1
486 }
487
488 warn(){
489     log "WARNING: $*"
490     WARNINGS="${WARNINGS}WARNING: $*\n"
491 }
492
493 die(){
494     log "$@"
495     echo "$error_color$bold_color$@$reset_color"
496     cat <<EOF
497
498 If you think configure made a mistake, make sure you are using the latest
499 version from Git.  If the latest version fails, report the problem to the
500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
501 EOF
502     if disabled logging; then
503         cat <<EOF
504 Rerun configure with logging enabled (do not use --disable-logging), and
505 include the log this produces with your report.
506 EOF
507     else
508         cat <<EOF
509 Include the log file "$logfile" produced by configure as this will help
510 solve the problem.
511 EOF
512     fi
513     exit 1
514 }
515
516 # Avoid locale weirdness, besides we really just want to translate ASCII.
517 toupper(){
518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
519 }
520
521 tolower(){
522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
523 }
524
525 c_escape(){
526     echo "$*" | sed 's/["\\]/\\\0/g'
527 }
528
529 sh_quote(){
530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
532     echo "$v"
533 }
534
535 cleanws(){
536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
537 }
538
539 filter(){
540     pat=$1
541     shift
542     for v; do
543         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
544     done
545 }
546
547 filter_out(){
548     pat=$1
549     shift
550     for v; do
551         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
552     done
553 }
554
555 map(){
556     m=$1
557     shift
558     for v; do eval $m; done
559 }
560
561 add_suffix(){
562     suffix=$1
563     shift
564     for v; do echo ${v}${suffix}; done
565 }
566
567 set_all(){
568     value=$1
569     shift
570     for var in $*; do
571         eval $var=$value
572     done
573 }
574
575 set_weak(){
576     value=$1
577     shift
578     for var; do
579         eval : \${$var:=$value}
580     done
581 }
582
583 sanitize_var_name(){
584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
585 }
586
587 set_sanitized(){
588     var=$1
589     shift
590     eval $(sanitize_var_name "$var")='$*'
591 }
592
593 get_sanitized(){
594     eval echo \$$(sanitize_var_name "$1")
595 }
596
597 pushvar(){
598     for pvar in $*; do
599         eval level=\${${pvar}_level:=0}
600         eval ${pvar}_${level}="\$$pvar"
601         eval ${pvar}_level=$(($level+1))
602     done
603 }
604
605 popvar(){
606     for pvar in $*; do
607         eval level=\${${pvar}_level:-0}
608         test $level = 0 && continue
609         eval level=$(($level-1))
610         eval $pvar="\${${pvar}_${level}}"
611         eval ${pvar}_level=$level
612         eval unset ${pvar}_${level}
613     done
614 }
615
616 request(){
617     for var in $*; do
618         eval ${var}_requested=yes
619         eval $var=
620     done
621 }
622
623 enable(){
624     set_all yes $*
625 }
626
627 disable(){
628     set_all no $*
629 }
630
631 enable_weak(){
632     set_weak yes $*
633 }
634
635 disable_weak(){
636     set_weak no $*
637 }
638
639 enable_sanitized(){
640     for var; do
641         enable $(sanitize_var_name $var)
642     done
643 }
644
645 disable_sanitized(){
646     for var; do
647         disable $(sanitize_var_name $var)
648     done
649 }
650
651 do_enable_deep(){
652     for var; do
653         enabled $var && continue
654         eval sel="\$${var}_select"
655         eval sgs="\$${var}_suggest"
656         pushvar var sgs
657         enable_deep $sel
658         popvar sgs
659         enable_deep_weak $sgs
660         popvar var
661     done
662 }
663
664 enable_deep(){
665     do_enable_deep $*
666     enable $*
667 }
668
669 enable_deep_weak(){
670     for var; do
671         disabled $var && continue
672         pushvar var
673         do_enable_deep $var
674         popvar var
675         enable_weak $var
676     done
677 }
678
679 requested(){
680     test "${1#!}" = "$1" && op="=" || op="!="
681     eval test "x\$${1#!}_requested" $op "xyes"
682 }
683
684 enabled(){
685     test "${1#!}" = "$1" && op="=" || op="!="
686     eval test "x\$${1#!}" $op "xyes"
687 }
688
689 disabled(){
690     test "${1#!}" = "$1" && op="=" || op="!="
691     eval test "x\$${1#!}" $op "xno"
692 }
693
694 enabled_all(){
695     for opt; do
696         enabled $opt || return 1
697     done
698 }
699
700 disabled_all(){
701     for opt; do
702         disabled $opt || return 1
703     done
704 }
705
706 enabled_any(){
707     for opt; do
708         enabled $opt && return 0
709     done
710 }
711
712 disabled_any(){
713     for opt; do
714         disabled $opt && return 0
715     done
716     return 1
717 }
718
719 set_default(){
720     for opt; do
721         eval : \${$opt:=\$${opt}_default}
722     done
723 }
724
725 is_in(){
726     value=$1
727     shift
728     for var in $*; do
729         [ $var = $value ] && return 0
730     done
731     return 1
732 }
733
734 check_deps(){
735     for cfg; do
736         enabled ${cfg}_checking && die "Circular dependency for $cfg."
737         disabled ${cfg}_checking && continue
738         enable ${cfg}_checking
739
740         eval dep_all="\$${cfg}_deps"
741         eval dep_any="\$${cfg}_deps_any"
742         eval dep_con="\$${cfg}_conflict"
743         eval dep_sel="\$${cfg}_select"
744         eval dep_sgs="\$${cfg}_suggest"
745         eval dep_ifa="\$${cfg}_if"
746         eval dep_ifn="\$${cfg}_if_any"
747
748         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
749         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
750         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
751
752         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
753         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
754         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
755         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
756         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
758
759         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
760
761         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
762             # filter out library deps, these do not belong in extralibs
763             is_in $dep $LIBRARY_LIST && continue
764             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
765         done
766
767         disable ${cfg}_checking
768     done
769 }
770
771 print_config(){
772     pfx=$1
773     files=$2
774     shift 2
775     map 'eval echo "$v \${$v:-no}"' "$@" |
776     awk "BEGIN { split(\"$files\", files) }
777         {
778             c = \"$pfx\" toupper(\$1);
779             v = \$2;
780             sub(/yes/, 1, v);
781             sub(/no/,  0, v);
782             for (f in files) {
783                 file = files[f];
784                 if (file ~ /\\.h\$/) {
785                     printf(\"#define %s %d\\n\", c, v) >>file;
786                 } else if (file ~ /\\.asm\$/) {
787                     printf(\"%%define %s %d\\n\", c, v) >>file;
788                 } else if (file ~ /\\.mak\$/) {
789                     n = -v ? \"\" : \"!\";
790                     printf(\"%s%s=yes\\n\", n, c) >>file;
791                 } else if (file ~ /\\.texi\$/) {
792                     pre = -v ? \"\" : \"@c \";
793                     yesno = \$2;
794                     c2 = tolower(c);
795                     gsub(/_/, \"-\", c2);
796                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
797                 }
798             }
799         }"
800 }
801
802 print_enabled(){
803     suf=$1
804     shift
805     for v; do
806         enabled $v && printf "%s\n" ${v%$suf}
807     done
808 }
809
810 append(){
811     var=$1
812     shift
813     eval "$var=\"\$$var $*\""
814 }
815
816 prepend(){
817     var=$1
818     shift
819     eval "$var=\"$* \$$var\""
820 }
821
822 unique(){
823     var=$1
824     uniq_list=""
825     for tok in $(eval echo \$$var); do
826         uniq_list="$(filter_out $tok $uniq_list) $tok"
827     done
828     eval "$var=\"${uniq_list}\""
829 }
830
831 resolve(){
832     var=$1
833     tmpvar=
834     for entry in $(eval echo \$$var); do
835         tmpvar="$tmpvar $(eval echo \$${entry})"
836     done
837     eval "$var=\"${tmpvar}\""
838 }
839
840 add_cppflags(){
841     append CPPFLAGS "$@"
842 }
843
844 add_cflags(){
845     append CFLAGS $($cflags_filter "$@")
846 }
847
848 add_cflags_headers(){
849     append CFLAGS_HEADERS $($cflags_filter "$@")
850 }
851
852 add_cxxflags(){
853     append CXXFLAGS $($cflags_filter "$@")
854 }
855
856 add_asflags(){
857     append ASFLAGS $($asflags_filter "$@")
858 }
859
860 add_objcflags(){
861     append OBJCFLAGS $($objcflags_filter "$@")
862 }
863
864 add_ldflags(){
865     append LDFLAGS $($ldflags_filter "$@")
866 }
867
868 add_ldexeflags(){
869     append LDEXEFLAGS $($ldflags_filter "$@")
870 }
871
872 add_ldsoflags(){
873     append LDSOFLAGS $($ldflags_filter "$@")
874 }
875
876 add_stripflags(){
877     append ASMSTRIPFLAGS "$@"
878 }
879
880 add_extralibs(){
881     prepend extralibs $($ldflags_filter "$@")
882 }
883
884 add_host_cppflags(){
885     append host_cppflags "$@"
886 }
887
888 add_host_cflags(){
889     append host_cflags $($host_cflags_filter "$@")
890 }
891
892 add_host_ldflags(){
893     append host_ldflags $($host_ldflags_filter "$@")
894 }
895
896 add_compat(){
897     append compat_objs $1
898     shift
899     map 'add_cppflags -D$v' "$@"
900 }
901
902 check_cmd(){
903     log "$@"
904     "$@" >> $logfile 2>&1
905 }
906
907 check_stat(){
908     log check_stat "$@"
909     stat "$1" >> $logfile 2>&1
910 }
911
912 cc_o(){
913     eval printf '%s\\n' $CC_O
914 }
915
916 cc_e(){
917     eval printf '%s\\n' $CC_E
918 }
919
920 check_cc(){
921     log check_cc "$@"
922     cat > $TMPC
923     log_file $TMPC
924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
925 }
926
927 check_cxx(){
928     log check_cxx "$@"
929     cat > $TMPCPP
930     log_file $TMPCPP
931     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
932 }
933
934 check_objcc(){
935     log check_objcc "$@"
936     cat > $TMPM
937     log_file $TMPM
938     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
939 }
940
941 check_cpp(){
942     log check_cpp "$@"
943     cat > $TMPC
944     log_file $TMPC
945     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
946 }
947
948 as_o(){
949     eval printf '%s\\n' $AS_O
950 }
951
952 check_as(){
953     log check_as "$@"
954     cat > $TMPS
955     log_file $TMPS
956     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
957 }
958
959 check_inline_asm(){
960     log check_inline_asm "$@"
961     name="$1"
962     code="$2"
963     shift 2
964     disable $name
965     check_cc "$@" <<EOF && enable $name
966 void foo(void){ __asm__ volatile($code); }
967 EOF
968 }
969
970 check_inline_asm_flags(){
971     log check_inline_asm_flags "$@"
972     name="$1"
973     code="$2"
974     flags=''
975     shift 2
976     while [ "$1" != "" ]; do
977       append flags $1
978       shift
979     done;
980     disable $name
981     cat > $TMPC <<EOF
982 void foo(void){ __asm__ volatile($code); }
983 EOF
984     log_file $TMPC
985     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
986     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
987 }
988
989 check_insn(){
990     log check_insn "$@"
991     check_inline_asm ${1}_inline "\"$2\""
992     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
993 }
994
995 check_x86asm(){
996     log check_x86asm "$@"
997     echo "$1" > $TMPS
998     log_file $TMPS
999     shift 1
1000     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 check_ld(){
1008     log check_ld "$@"
1009     type=$1
1010     shift 1
1011     flags=$(filter_out '-l*|*.so' $@)
1012     libs=$(filter '-l*|*.so' $@)
1013     check_$type $($cflags_filter $flags) || return
1014     flags=$($ldflags_filter $flags)
1015     libs=$($ldflags_filter $libs)
1016     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1017 }
1018
1019 print_include(){
1020     hdr=$1
1021     test "${hdr%.h}" = "${hdr}" &&
1022         echo "#include $hdr"    ||
1023         echo "#include <$hdr>"
1024 }
1025
1026 check_code(){
1027     log check_code "$@"
1028     check=$1
1029     headers=$2
1030     code=$3
1031     shift 3
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         echo "int main(void) { $code; return 0; }"
1037     } | check_$check "$@"
1038 }
1039
1040 check_cppflags(){
1041     log check_cppflags "$@"
1042     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1043 #include <stdlib.h>
1044 EOF
1045 }
1046
1047 test_cflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_cflags(){
1056     log check_cflags "$@"
1057     test_cflags "$@" && add_cflags "$@"
1058 }
1059
1060 check_cxxflags(){
1061     log check_cxxflags "$@"
1062     set -- $($cflags_filter "$@")
1063     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1064 int x;
1065 EOF
1066 }
1067
1068 test_objcflags(){
1069     log test_objcflags "$@"
1070     set -- $($objcflags_filter "$@")
1071     check_objcc "$@" <<EOF
1072 int x;
1073 EOF
1074 }
1075
1076 check_objcflags(){
1077     log check_objcflags "$@"
1078     test_objcflags "$@" && add_objcflags "$@"
1079 }
1080
1081 test_ldflags(){
1082     log test_ldflags "$@"
1083     set -- $($ldflags_filter "$@")
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     headers=$1
1111     shift
1112     disable_sanitized $headers
1113     {
1114         for hdr in $headers; do
1115             print_include $hdr
1116         done
1117         echo "int x;"
1118     } | check_cpp "$@" && enable_sanitized $headers
1119 }
1120
1121 check_header_objcc(){
1122     log check_header_objcc "$@"
1123     rm -f -- "$TMPO"
1124     header=$1
1125     shift
1126     disable_sanitized $header
1127     {
1128        echo "#include <$header>"
1129        echo "int main(void) { return 0; }"
1130     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1131 }
1132
1133 check_apple_framework(){
1134     log check_apple_framework "$@"
1135     framework="$1"
1136     name="$(tolower $framework)"
1137     header="${framework}/${framework}.h"
1138     disable $name
1139     check_header_objcc $header &&
1140         enable $name && eval ${name}_extralibs='"-framework $framework"'
1141 }
1142
1143 check_func(){
1144     log check_func "$@"
1145     func=$1
1146     shift
1147     disable $func
1148     check_ld "cc" "$@" <<EOF && enable $func
1149 extern int $func();
1150 int main(void){ $func(); }
1151 EOF
1152 }
1153
1154 check_complexfunc(){
1155     log check_complexfunc "$@"
1156     func=$1
1157     narg=$2
1158     shift 2
1159     test $narg = 2 && args="f, g" || args="f * I"
1160     disable $func
1161     check_ld "cc" "$@" <<EOF && enable $func
1162 #include <complex.h>
1163 #include <math.h>
1164 float foo(complex float f, complex float g) { return $func($args); }
1165 int main(void){ return (int) foo; }
1166 EOF
1167 }
1168
1169 check_mathfunc(){
1170     log check_mathfunc "$@"
1171     func=$1
1172     narg=$2
1173     shift 2
1174     test $narg = 2 && args="f, g" || args="f"
1175     disable $func
1176     check_ld "cc" "$@" <<EOF && enable $func
1177 #include <math.h>
1178 float foo(float f, float g) { return $func($args); }
1179 int main(void){ return (int) foo; }
1180 EOF
1181 }
1182
1183 check_func_headers(){
1184     log check_func_headers "$@"
1185     headers=$1
1186     funcs=$2
1187     shift 2
1188     {
1189         for hdr in $headers; do
1190             print_include $hdr
1191         done
1192         echo "#include <stdint.h>"
1193         for func in $funcs; do
1194             echo "long check_$func(void) { return (long) $func; }"
1195         done
1196         echo "int main(void) { int ret = 0;"
1197         # LTO could optimize out the test functions without this
1198         for func in $funcs; do
1199             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1200         done
1201         echo "return ret; }"
1202     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1203 }
1204
1205 check_class_headers_cpp(){
1206     log check_class_headers_cpp "$@"
1207     headers=$1
1208     classes=$2
1209     shift 2
1210     {
1211         for hdr in $headers; do
1212             echo "#include <$hdr>"
1213         done
1214         echo "int main(void) { "
1215         i=1
1216         for class in $classes; do
1217             echo "$class obj$i;"
1218             i=$(expr $i + 1)
1219         done
1220         echo "return 0; }"
1221     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1222 }
1223
1224 check_cpp_condition(){
1225     log check_cpp_condition "$@"
1226     header=$1
1227     condition=$2
1228     shift 2
1229     check_cpp "$@" <<EOF
1230 #include <$header>
1231 #if !($condition)
1232 #error "unsatisfied condition: $condition"
1233 #endif
1234 EOF
1235 }
1236
1237 test_cflags_cc(){
1238     log test_cflags_cc "$@"
1239     flags=$1
1240     header=$2
1241     condition=$3
1242     shift 3
1243     set -- $($cflags_filter "$flags")
1244     check_cc "$@" <<EOF
1245 #include <$header>
1246 #if !($condition)
1247 #error "unsatisfied condition: $condition"
1248 #endif
1249 EOF
1250 }
1251
1252 check_lib(){
1253     log check_lib "$@"
1254     name="$1"
1255     headers="$2"
1256     funcs="$3"
1257     shift 3
1258     disable $name
1259     check_func_headers "$headers" "$funcs" "$@" &&
1260         enable $name && eval ${name}_extralibs="\$@"
1261 }
1262
1263 check_lib_cpp(){
1264     log check_lib_cpp "$@"
1265     name="$1"
1266     headers="$2"
1267     classes="$3"
1268     shift 3
1269     disable $name
1270     check_class_headers_cpp "$headers" "$classes" "$@" &&
1271         enable $name && eval ${name}_extralibs="\$@"
1272 }
1273
1274 test_pkg_config(){
1275     log test_pkg_config "$@"
1276     name="$1"
1277     pkg_version="$2"
1278     pkg="${2%% *}"
1279     headers="$3"
1280     funcs="$4"
1281     shift 4
1282     disable $name
1283     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1284     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1285     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1286     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1287         enable $name &&
1288         set_sanitized "${name}_cflags"    $pkg_cflags &&
1289         set_sanitized "${name}_extralibs" $pkg_libs
1290 }
1291
1292 check_pkg_config(){
1293     log check_pkg_config "$@"
1294     name="$1"
1295     test_pkg_config "$@" &&
1296         eval add_cflags \$${name}_cflags
1297 }
1298
1299 check_exec(){
1300     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1301 }
1302
1303 check_exec_crash(){
1304     log check_exec_crash "$@"
1305     code=$(cat)
1306
1307     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1308     # are safe but may not be available everywhere.  Thus we use
1309     # raise(SIGTERM) instead.  The check is run in a subshell so we
1310     # can redirect the "Terminated" message from the shell.  SIGBUS
1311     # is not defined by standard C so it is used conditionally.
1312
1313     (check_exec "$@") >> $logfile 2>&1 <<EOF
1314 #include <signal.h>
1315 static void sighandler(int sig){
1316     raise(SIGTERM);
1317 }
1318 int foo(void){
1319     $code
1320 }
1321 int (*func_ptr)(void) = foo;
1322 int main(void){
1323     signal(SIGILL, sighandler);
1324     signal(SIGFPE, sighandler);
1325     signal(SIGSEGV, sighandler);
1326 #ifdef SIGBUS
1327     signal(SIGBUS, sighandler);
1328 #endif
1329     return func_ptr();
1330 }
1331 EOF
1332 }
1333
1334 check_type(){
1335     log check_type "$@"
1336     headers=$1
1337     type=$2
1338     shift 2
1339     disable_sanitized "$type"
1340     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1341 }
1342
1343 check_struct(){
1344     log check_struct "$@"
1345     headers=$1
1346     struct=$2
1347     member=$3
1348     shift 3
1349     disable_sanitized "${struct}_${member}"
1350     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1351         enable_sanitized "${struct}_${member}"
1352 }
1353
1354 check_builtin(){
1355     log check_builtin "$@"
1356     name=$1
1357     headers=$2
1358     builtin=$3
1359     shift 3
1360     disable "$name"
1361     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1362 }
1363
1364 check_compile_assert(){
1365     log check_compile_assert "$@"
1366     name=$1
1367     headers=$2
1368     condition=$3
1369     shift 3
1370     disable "$name"
1371     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1372 }
1373
1374 require(){
1375     log require "$@"
1376     name_version="$1"
1377     name="${1%% *}"
1378     headers="$2"
1379     func="$3"
1380     shift 3
1381     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1382 }
1383
1384 require_cpp(){
1385     name="$1"
1386     headers="$2"
1387     classes="$3"
1388     shift 3
1389     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1390 }
1391
1392 require_header(){
1393     log require_header "$@"
1394     headers="$1"
1395     shift
1396     check_header "$headers" "$@" || die "ERROR: $headers not found"
1397 }
1398
1399 require_cpp_condition(){
1400     log require_cpp_condition "$@"
1401     header="$1"
1402     condition="$2"
1403     shift 2
1404     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1405 }
1406
1407 require_pkg_config(){
1408     log require_pkg_config "$@"
1409     pkg_version="$2"
1410     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1411 }
1412
1413 hostcc_e(){
1414     eval printf '%s\\n' $HOSTCC_E
1415 }
1416
1417 hostcc_o(){
1418     eval printf '%s\\n' $HOSTCC_O
1419 }
1420
1421 check_host_cc(){
1422     log check_host_cc "$@"
1423     cat > $TMPC
1424     log_file $TMPC
1425     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1426 }
1427
1428 check_host_cpp(){
1429     log check_host_cpp "$@"
1430     cat > $TMPC
1431     log_file $TMPC
1432     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1433 }
1434
1435 check_host_cppflags(){
1436     log check_host_cppflags "$@"
1437     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1438 #include <stdlib.h>
1439 EOF
1440 }
1441
1442 check_host_cflags(){
1443     log check_host_cflags "$@"
1444     set -- $($host_cflags_filter "$@")
1445     check_host_cc "$@" <<EOF && append host_cflags "$@"
1446 int x;
1447 EOF
1448 }
1449
1450 check_host_cpp_condition(){
1451     log check_host_cpp_condition "$@"
1452     header=$1
1453     condition=$2
1454     shift 2
1455     check_host_cpp "$@" <<EOF
1456 #include <$header>
1457 #if !($condition)
1458 #error "unsatisfied condition: $condition"
1459 #endif
1460 EOF
1461 }
1462
1463 cp_if_changed(){
1464     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1465     mkdir -p "$(dirname $2)"
1466     cp -f "$1" "$2"
1467 }
1468
1469 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1470 # system-dependent things.
1471
1472 AVCODEC_COMPONENTS="
1473     bsfs
1474     decoders
1475     encoders
1476     hwaccels
1477     parsers
1478 "
1479
1480 AVDEVICE_COMPONENTS="
1481     indevs
1482     outdevs
1483 "
1484
1485 AVFILTER_COMPONENTS="
1486     filters
1487 "
1488
1489 AVFORMAT_COMPONENTS="
1490     demuxers
1491     muxers
1492     protocols
1493 "
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500 "
1501
1502 EXAMPLE_LIST="
1503     avio_dir_cmd_example
1504     avio_reading_example
1505     decode_audio_example
1506     decode_video_example
1507     demuxing_decoding_example
1508     encode_audio_example
1509     encode_video_example
1510     extract_mvs_example
1511     filter_audio_example
1512     filtering_audio_example
1513     filtering_video_example
1514     http_multiclient_example
1515     hw_decode_example
1516     metadata_example
1517     muxing_example
1518     qsvdec_example
1519     remuxing_example
1520     resampling_audio_example
1521     scaling_video_example
1522     transcode_aac_example
1523     transcoding_example
1524 "
1525
1526 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1527     alsa
1528     appkit
1529     avfoundation
1530     bzlib
1531     coreimage
1532     iconv
1533     libxcb
1534     libxcb_shm
1535     libxcb_shape
1536     libxcb_xfixes
1537     lzma
1538     schannel
1539     sdl2
1540     securetransport
1541     sndio
1542     xlib
1543     zlib
1544 "
1545
1546 EXTERNAL_LIBRARY_GPL_LIST="
1547     avisynth
1548     frei0r
1549     libcdio
1550     librubberband
1551     libvidstab
1552     libx264
1553     libx265
1554     libxavs
1555     libxvid
1556 "
1557
1558 EXTERNAL_LIBRARY_NONFREE_LIST="
1559     decklink
1560     libndi_newtek
1561     libfdk_aac
1562     openssl
1563 "
1564
1565 EXTERNAL_LIBRARY_VERSION3_LIST="
1566     gmp
1567     libopencore_amrnb
1568     libopencore_amrwb
1569     libvmaf
1570     libvo_amrwbenc
1571     rkmpp
1572 "
1573
1574 EXTERNAL_LIBRARY_GPLV3_LIST="
1575     libsmbclient
1576 "
1577
1578 EXTERNAL_LIBRARY_LIST="
1579     $EXTERNAL_LIBRARY_GPL_LIST
1580     $EXTERNAL_LIBRARY_NONFREE_LIST
1581     $EXTERNAL_LIBRARY_VERSION3_LIST
1582     $EXTERNAL_LIBRARY_GPLV3_LIST
1583     chromaprint
1584     gcrypt
1585     gnutls
1586     jni
1587     ladspa
1588     libass
1589     libbluray
1590     libbs2b
1591     libcaca
1592     libcelt
1593     libdc1394
1594     libdrm
1595     libflite
1596     libfontconfig
1597     libfreetype
1598     libfribidi
1599     libgme
1600     libgsm
1601     libiec61883
1602     libilbc
1603     libjack
1604     libkvazaar
1605     libmodplug
1606     libmp3lame
1607     libmysofa
1608     libopencv
1609     libopenh264
1610     libopenjpeg
1611     libopenmpt
1612     libopus
1613     libpulse
1614     librsvg
1615     librtmp
1616     libshine
1617     libsmbclient
1618     libsnappy
1619     libsoxr
1620     libspeex
1621     libssh
1622     libtesseract
1623     libtheora
1624     libtwolame
1625     libv4l2
1626     libvorbis
1627     libvpx
1628     libwavpack
1629     libwebp
1630     libxml2
1631     libzimg
1632     libzmq
1633     libzvbi
1634     mediacodec
1635     openal
1636     opengl
1637 "
1638
1639 HWACCEL_AUTODETECT_LIBRARY_LIST="
1640     audiotoolbox
1641     crystalhd
1642     cuda
1643     cuvid
1644     d3d11va
1645     dxva2
1646     nvdec
1647     nvenc
1648     vaapi
1649     vdpau
1650     videotoolbox
1651     v4l2_m2m
1652     xvmc
1653 "
1654
1655 # catchall list of things that require external libs to link
1656 EXTRALIBS_LIST="
1657     cpu_init
1658     cws2fws
1659 "
1660
1661 HWACCEL_LIBRARY_NONFREE_LIST="
1662     cuda_sdk
1663     libnpp
1664 "
1665
1666 HWACCEL_LIBRARY_LIST="
1667     $HWACCEL_LIBRARY_NONFREE_LIST
1668     libmfx
1669     mmal
1670     omx
1671     opencl
1672 "
1673
1674 DOCUMENT_LIST="
1675     doc
1676     htmlpages
1677     manpages
1678     podpages
1679     txtpages
1680 "
1681
1682 FEATURE_LIST="
1683     ftrapv
1684     gray
1685     hardcoded_tables
1686     omx_rpi
1687     runtime_cpudetect
1688     safe_bitstream_reader
1689     shared
1690     small
1691     static
1692     swscale_alpha
1693 "
1694
1695 LIBRARY_LIST="
1696     avcodec
1697     avdevice
1698     avfilter
1699     avformat
1700     avresample
1701     avutil
1702     postproc
1703     swresample
1704     swscale
1705 "
1706
1707 LICENSE_LIST="
1708     gpl
1709     nonfree
1710     version3
1711 "
1712
1713 PROGRAM_LIST="
1714     ffplay
1715     ffprobe
1716     ffserver
1717     ffmpeg
1718 "
1719
1720 SUBSYSTEM_LIST="
1721     dct
1722     dwt
1723     error_resilience
1724     faan
1725     fast_unaligned
1726     fft
1727     lsp
1728     lzo
1729     mdct
1730     pixelutils
1731     network
1732     rdft
1733 "
1734
1735 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1736 CONFIG_LIST="
1737     $DOCUMENT_LIST
1738     $EXAMPLE_LIST
1739     $EXTERNAL_LIBRARY_LIST
1740     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1741     $HWACCEL_LIBRARY_LIST
1742     $HWACCEL_AUTODETECT_LIBRARY_LIST
1743     $FEATURE_LIST
1744     $LICENSE_LIST
1745     $LIBRARY_LIST
1746     $PROGRAM_LIST
1747     $SUBSYSTEM_LIST
1748     autodetect
1749     fontconfig
1750     linux_perf
1751     memory_poisoning
1752     neon_clobber_test
1753     ossfuzz
1754     pic
1755     thumb
1756     valgrind_backtrace
1757     xmm_clobber_test
1758     $COMPONENT_LIST
1759 "
1760
1761 THREADS_LIST="
1762     pthreads
1763     os2threads
1764     w32threads
1765 "
1766
1767 ATOMICS_LIST="
1768     atomics_gcc
1769     atomics_suncc
1770     atomics_win32
1771 "
1772
1773 AUTODETECT_LIBS="
1774     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1775     $HWACCEL_AUTODETECT_LIBRARY_LIST
1776     $THREADS_LIST
1777 "
1778
1779 ARCH_LIST="
1780     aarch64
1781     alpha
1782     arm
1783     avr32
1784     avr32_ap
1785     avr32_uc
1786     bfin
1787     ia64
1788     m68k
1789     mips
1790     mips64
1791     parisc
1792     ppc
1793     ppc64
1794     s390
1795     sh4
1796     sparc
1797     sparc64
1798     tilegx
1799     tilepro
1800     tomi
1801     x86
1802     x86_32
1803     x86_64
1804 "
1805
1806 ARCH_EXT_LIST_ARM="
1807     armv5te
1808     armv6
1809     armv6t2
1810     armv8
1811     neon
1812     vfp
1813     vfpv3
1814     setend
1815 "
1816
1817 ARCH_EXT_LIST_MIPS="
1818     mipsfpu
1819     mips32r2
1820     mips32r5
1821     mips64r2
1822     mips32r6
1823     mips64r6
1824     mipsdsp
1825     mipsdspr2
1826     msa
1827 "
1828
1829 ARCH_EXT_LIST_LOONGSON="
1830     loongson2
1831     loongson3
1832     mmi
1833 "
1834
1835 ARCH_EXT_LIST_X86_SIMD="
1836     aesni
1837     amd3dnow
1838     amd3dnowext
1839     avx
1840     avx2
1841     fma3
1842     fma4
1843     mmx
1844     mmxext
1845     sse
1846     sse2
1847     sse3
1848     sse4
1849     sse42
1850     ssse3
1851     xop
1852 "
1853
1854 ARCH_EXT_LIST_PPC="
1855     altivec
1856     dcbzl
1857     ldbrx
1858     power8
1859     ppc4xx
1860     vsx
1861 "
1862
1863 ARCH_EXT_LIST_X86="
1864     $ARCH_EXT_LIST_X86_SIMD
1865     cpunop
1866     i686
1867 "
1868
1869 ARCH_EXT_LIST="
1870     $ARCH_EXT_LIST_ARM
1871     $ARCH_EXT_LIST_PPC
1872     $ARCH_EXT_LIST_X86
1873     $ARCH_EXT_LIST_MIPS
1874     $ARCH_EXT_LIST_LOONGSON
1875 "
1876
1877 ARCH_FEATURES="
1878     aligned_stack
1879     fast_64bit
1880     fast_clz
1881     fast_cmov
1882     local_aligned
1883     simd_align_16
1884     simd_align_32
1885 "
1886
1887 BUILTIN_LIST="
1888     atomic_cas_ptr
1889     machine_rw_barrier
1890     MemoryBarrier
1891     mm_empty
1892     rdtsc
1893     sarestart
1894     sem_timedwait
1895     sync_val_compare_and_swap
1896 "
1897 HAVE_LIST_CMDLINE="
1898     inline_asm
1899     symver
1900     x86asm
1901 "
1902
1903 HAVE_LIST_PUB="
1904     bigendian
1905     fast_unaligned
1906 "
1907
1908 HEADERS_LIST="
1909     arpa_inet_h
1910     asm_types_h
1911     cdio_paranoia_h
1912     cdio_paranoia_paranoia_h
1913     cuda_h
1914     dispatch_dispatch_h
1915     dev_bktr_ioctl_bt848_h
1916     dev_bktr_ioctl_meteor_h
1917     dev_ic_bt8xx_h
1918     dev_video_bktr_ioctl_bt848_h
1919     dev_video_meteor_ioctl_meteor_h
1920     direct_h
1921     dirent_h
1922     dxgidebug_h
1923     dxva_h
1924     ES2_gl_h
1925     gsm_h
1926     io_h
1927     machine_ioctl_bt848_h
1928     machine_ioctl_meteor_h
1929     malloc_h
1930     opencv2_core_core_c_h
1931     OpenGL_gl3_h
1932     poll_h
1933     sys_param_h
1934     sys_resource_h
1935     sys_select_h
1936     sys_soundcard_h
1937     sys_time_h
1938     sys_un_h
1939     sys_videoio_h
1940     termios_h
1941     udplite_h
1942     unistd_h
1943     valgrind_valgrind_h
1944     windows_h
1945     winsock2_h
1946 "
1947
1948 INTRINSICS_LIST="
1949     intrinsics_neon
1950 "
1951
1952 COMPLEX_FUNCS="
1953     cabs
1954     cexp
1955 "
1956
1957 MATH_FUNCS="
1958     atanf
1959     atan2f
1960     cbrt
1961     cbrtf
1962     copysign
1963     cosf
1964     erf
1965     exp2
1966     exp2f
1967     expf
1968     hypot
1969     isfinite
1970     isinf
1971     isnan
1972     ldexpf
1973     llrint
1974     llrintf
1975     log2
1976     log2f
1977     log10f
1978     lrint
1979     lrintf
1980     powf
1981     rint
1982     round
1983     roundf
1984     sinf
1985     trunc
1986     truncf
1987 "
1988
1989 SYSTEM_FEATURES="
1990     atomics_native
1991     dos_paths
1992     libc_msvcrt
1993     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1994     section_data_rel_ro
1995     threads
1996     uwp
1997     winrt
1998 "
1999
2000 SYSTEM_FUNCS="
2001     access
2002     aligned_malloc
2003     arc4random
2004     clock_gettime
2005     closesocket
2006     CommandLineToArgvW
2007     fcntl
2008     getaddrinfo
2009     gethrtime
2010     getopt
2011     GetProcessAffinityMask
2012     GetProcessMemoryInfo
2013     GetProcessTimes
2014     getrusage
2015     GetSystemTimeAsFileTime
2016     gettimeofday
2017     glob
2018     glXGetProcAddress
2019     gmtime_r
2020     inet_aton
2021     isatty
2022     kbhit
2023     localtime_r
2024     lstat
2025     lzo1x_999_compress
2026     mach_absolute_time
2027     MapViewOfFile
2028     memalign
2029     mkstemp
2030     mmap
2031     mprotect
2032     nanosleep
2033     PeekNamedPipe
2034     posix_memalign
2035     pthread_cancel
2036     sched_getaffinity
2037     SecItemImport
2038     SetConsoleTextAttribute
2039     SetConsoleCtrlHandler
2040     setmode
2041     setrlimit
2042     Sleep
2043     strerror_r
2044     sysconf
2045     sysctl
2046     usleep
2047     UTGetOSTypeFromString
2048     VirtualAlloc
2049     wglGetProcAddress
2050 "
2051
2052 SYSTEM_LIBRARIES="
2053     vaapi_drm
2054     vaapi_x11
2055     vdpau_x11
2056     wincrypt
2057 "
2058
2059 TOOLCHAIN_FEATURES="
2060     as_arch_directive
2061     as_fpu_directive
2062     as_func
2063     as_object_arch
2064     asm_mod_q
2065     blocks_extension
2066     ebp_available
2067     ebx_available
2068     gnu_as
2069     gnu_windres
2070     ibm_asm
2071     inline_asm_direct_symbol_refs
2072     inline_asm_labels
2073     inline_asm_nonlocal_labels
2074     pragma_deprecated
2075     rsync_contimeout
2076     symver_asm_label
2077     symver_gnu_asm
2078     vfp_args
2079     xform_asm
2080     xmm_clobbers
2081 "
2082
2083 TYPES_LIST="
2084     CONDITION_VARIABLE_Ptr
2085     kCMVideoCodecType_HEVC
2086     socklen_t
2087     struct_addrinfo
2088     struct_group_source_req
2089     struct_ip_mreq_source
2090     struct_ipv6_mreq
2091     struct_msghdr_msg_flags
2092     struct_pollfd
2093     struct_rusage_ru_maxrss
2094     struct_sctp_event_subscribe
2095     struct_sockaddr_in6
2096     struct_sockaddr_sa_len
2097     struct_sockaddr_storage
2098     struct_stat_st_mtim_tv_nsec
2099     struct_v4l2_frmivalenum_discrete
2100 "
2101
2102 HAVE_LIST="
2103     $ARCH_EXT_LIST
2104     $(add_suffix _external $ARCH_EXT_LIST)
2105     $(add_suffix _inline   $ARCH_EXT_LIST)
2106     $ARCH_FEATURES
2107     $ATOMICS_LIST
2108     $BUILTIN_LIST
2109     $COMPLEX_FUNCS
2110     $HAVE_LIST_CMDLINE
2111     $HAVE_LIST_PUB
2112     $HEADERS_LIST
2113     $INTRINSICS_LIST
2114     $MATH_FUNCS
2115     $SYSTEM_FEATURES
2116     $SYSTEM_FUNCS
2117     $SYSTEM_LIBRARIES
2118     $THREADS_LIST
2119     $TOOLCHAIN_FEATURES
2120     $TYPES_LIST
2121     makeinfo
2122     makeinfo_html
2123     opencl_d3d11
2124     opencl_drm_arm
2125     opencl_dxva2
2126     opencl_vaapi_beignet
2127     opencl_vaapi_intel_media
2128     perl
2129     pod2man
2130     texi2html
2131 "
2132
2133 # options emitted with CONFIG_ prefix but not available on the command line
2134 CONFIG_EXTRA="
2135     aandcttables
2136     ac3dsp
2137     adts_header
2138     audio_frame_queue
2139     audiodsp
2140     blockdsp
2141     bswapdsp
2142     cabac
2143     cbs
2144     cbs_h264
2145     cbs_h265
2146     cbs_mpeg2
2147     dirac_parse
2148     dvprofile
2149     exif
2150     faandct
2151     faanidct
2152     fdctdsp
2153     flacdsp
2154     fmtconvert
2155     frame_thread_encoder
2156     g722dsp
2157     golomb
2158     gplv3
2159     h263dsp
2160     h264chroma
2161     h264dsp
2162     h264parse
2163     h264pred
2164     h264qpel
2165     hevcparse
2166     hpeldsp
2167     huffman
2168     huffyuvdsp
2169     huffyuvencdsp
2170     idctdsp
2171     iirfilter
2172     mdct15
2173     intrax8
2174     iso_media
2175     ividsp
2176     jpegtables
2177     lgplv3
2178     libx262
2179     llauddsp
2180     llviddsp
2181     llvidencdsp
2182     lpc
2183     lzf
2184     me_cmp
2185     mpeg_er
2186     mpegaudio
2187     mpegaudiodsp
2188     mpegaudioheader
2189     mpegvideo
2190     mpegvideoenc
2191     mss34dsp
2192     pixblockdsp
2193     qpeldsp
2194     qsv
2195     qsvdec
2196     qsvenc
2197     qsvvpp
2198     rangecoder
2199     riffdec
2200     riffenc
2201     rtpdec
2202     rtpenc_chain
2203     rv34dsp
2204     sinewin
2205     snappy
2206     srtp
2207     startcode
2208     texturedsp
2209     texturedspenc
2210     tpeldsp
2211     vaapi_1
2212     vaapi_encode
2213     vc1dsp
2214     videodsp
2215     vp3dsp
2216     vp56dsp
2217     vp8dsp
2218     wma_freqs
2219     wmv2dsp
2220 "
2221
2222 CMDLINE_SELECT="
2223     $ARCH_EXT_LIST
2224     $CONFIG_LIST
2225     $HAVE_LIST_CMDLINE
2226     $THREADS_LIST
2227     asm
2228     cross_compile
2229     debug
2230     extra_warnings
2231     logging
2232     lto
2233     optimizations
2234     rpath
2235     stripping
2236 "
2237
2238 PATHS_LIST="
2239     bindir
2240     datadir
2241     docdir
2242     incdir
2243     libdir
2244     mandir
2245     pkgconfigdir
2246     prefix
2247     shlibdir
2248     install_name_dir
2249 "
2250
2251 CMDLINE_SET="
2252     $PATHS_LIST
2253     ar
2254     arch
2255     as
2256     assert_level
2257     build_suffix
2258     cc
2259     objcc
2260     cpu
2261     cross_prefix
2262     custom_allocator
2263     cxx
2264     dep_cc
2265     doxygen
2266     env
2267     extra_version
2268     gas
2269     host_cc
2270     host_cflags
2271     host_extralibs
2272     host_ld
2273     host_ldflags
2274     host_os
2275     ignore_tests
2276     install
2277     ld
2278     ln_s
2279     logfile
2280     malloc_prefix
2281     nm
2282     optflags
2283     nvccflags
2284     pkg_config
2285     pkg_config_flags
2286     progs_suffix
2287     random_seed
2288     ranlib
2289     samples
2290     strip
2291     sws_max_filter_size
2292     sysinclude
2293     sysroot
2294     target_exec
2295     target_os
2296     target_path
2297     target_samples
2298     tempprefix
2299     toolchain
2300     valgrind
2301     x86asmexe
2302 "
2303
2304 CMDLINE_APPEND="
2305     extra_cflags
2306     extra_cxxflags
2307     extra_objcflags
2308     host_cppflags
2309 "
2310
2311 # code dependency declarations
2312
2313 # architecture extensions
2314
2315 armv5te_deps="arm"
2316 armv6_deps="arm"
2317 armv6t2_deps="arm"
2318 armv8_deps="aarch64"
2319 neon_deps_any="aarch64 arm"
2320 intrinsics_neon_deps="neon"
2321 vfp_deps_any="aarch64 arm"
2322 vfpv3_deps="vfp"
2323 setend_deps="arm"
2324
2325 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2326
2327 altivec_deps="ppc"
2328 dcbzl_deps="ppc"
2329 ldbrx_deps="ppc"
2330 ppc4xx_deps="ppc"
2331 vsx_deps="altivec"
2332 power8_deps="vsx"
2333
2334 loongson2_deps="mips"
2335 loongson3_deps="mips"
2336 mips32r2_deps="mips"
2337 mips32r5_deps="mips"
2338 mips32r6_deps="mips"
2339 mips64r2_deps="mips"
2340 mips64r6_deps="mips"
2341 mipsfpu_deps="mips"
2342 mipsdsp_deps="mips"
2343 mipsdspr2_deps="mips"
2344 mmi_deps="mips"
2345 msa_deps="mipsfpu"
2346
2347 cpunop_deps="i686"
2348 x86_64_select="i686"
2349 x86_64_suggest="fast_cmov"
2350
2351 amd3dnow_deps="mmx"
2352 amd3dnowext_deps="amd3dnow"
2353 i686_deps="x86"
2354 mmx_deps="x86"
2355 mmxext_deps="mmx"
2356 sse_deps="mmxext"
2357 sse2_deps="sse"
2358 sse3_deps="sse2"
2359 ssse3_deps="sse3"
2360 sse4_deps="ssse3"
2361 sse42_deps="sse4"
2362 aesni_deps="sse42"
2363 avx_deps="sse42"
2364 xop_deps="avx"
2365 fma3_deps="avx"
2366 fma4_deps="avx"
2367 avx2_deps="avx"
2368
2369 mmx_external_deps="x86asm"
2370 mmx_inline_deps="inline_asm x86"
2371 mmx_suggest="mmx_external mmx_inline"
2372
2373 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2374     eval dep=\$${ext}_deps
2375     eval ${ext}_external_deps='"${dep}_external"'
2376     eval ${ext}_inline_deps='"${dep}_inline"'
2377     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2378 done
2379
2380 aligned_stack_if_any="aarch64 ppc x86"
2381 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2382 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2383 fast_unaligned_if_any="aarch64 ppc x86"
2384 simd_align_16_if_any="altivec neon sse"
2385 simd_align_32_if_any="avx"
2386
2387 # system capabilities
2388 symver_if_any="symver_asm_label symver_gnu_asm"
2389 valgrind_backtrace_conflict="optimizations"
2390 valgrind_backtrace_deps="valgrind_valgrind_h"
2391
2392 # threading support
2393 atomics_gcc_if="sync_val_compare_and_swap"
2394 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2395 atomics_win32_if="MemoryBarrier"
2396 atomics_native_if_any="$ATOMICS_LIST"
2397 w32threads_deps="atomics_native"
2398 threads_if_any="$THREADS_LIST"
2399
2400 # subsystems
2401 cbs_h264_select="cbs golomb"
2402 cbs_h265_select="cbs golomb"
2403 cbs_mpeg2_select="cbs"
2404 dct_select="rdft"
2405 dirac_parse_select="golomb"
2406 error_resilience_select="me_cmp"
2407 faandct_deps="faan"
2408 faandct_select="fdctdsp"
2409 faanidct_deps="faan"
2410 faanidct_select="idctdsp"
2411 h264dsp_select="startcode"
2412 hevcparse_select="golomb"
2413 frame_thread_encoder_deps="encoders threads"
2414 intrax8_select="blockdsp idctdsp"
2415 mdct_select="fft"
2416 mdct15_select="fft"
2417 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2418 mpeg_er_select="error_resilience"
2419 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2420 mpegaudiodsp_select="dct"
2421 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2422 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2423 vc1dsp_select="h264chroma qpeldsp startcode"
2424 rdft_select="fft"
2425
2426 # decoders / encoders
2427 aac_decoder_select="adts_header mdct15 mdct sinewin"
2428 aac_fixed_decoder_select="mdct sinewin"
2429 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2430 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2431 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2432 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2433 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2434 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2435 adpcm_g722_decoder_select="g722dsp"
2436 adpcm_g722_encoder_select="g722dsp"
2437 aic_decoder_select="golomb idctdsp"
2438 alac_encoder_select="lpc"
2439 als_decoder_select="bswapdsp"
2440 amrnb_decoder_select="lsp"
2441 amrwb_decoder_select="lsp"
2442 amv_decoder_select="sp5x_decoder exif"
2443 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2444 ape_decoder_select="bswapdsp llauddsp"
2445 apng_decoder_deps="zlib"
2446 apng_encoder_deps="zlib"
2447 apng_encoder_select="llvidencdsp"
2448 aptx_decoder_select="audio_frame_queue"
2449 aptx_encoder_select="audio_frame_queue"
2450 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2451 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2452 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2453 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2454 atrac1_decoder_select="mdct sinewin"
2455 atrac3_decoder_select="mdct"
2456 atrac3p_decoder_select="mdct sinewin"
2457 avrn_decoder_select="exif jpegtables"
2458 bink_decoder_select="blockdsp hpeldsp"
2459 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2460 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2461 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2462 clearvideo_decoder_select="idctdsp"
2463 cllc_decoder_select="bswapdsp"
2464 comfortnoise_encoder_select="lpc"
2465 cook_decoder_select="audiodsp mdct sinewin"
2466 cscd_decoder_select="lzo"
2467 cscd_decoder_suggest="zlib"
2468 dca_decoder_select="mdct"
2469 dds_decoder_select="texturedsp"
2470 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2471 dnxhd_decoder_select="blockdsp idctdsp"
2472 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2473 dolby_e_decoder_select="mdct"
2474 dvvideo_decoder_select="dvprofile idctdsp"
2475 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2476 dxa_decoder_deps="zlib"
2477 dxv_decoder_select="lzf texturedsp"
2478 eac3_decoder_select="ac3_decoder"
2479 eac3_encoder_select="ac3_encoder"
2480 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2481 eatgq_decoder_select="aandcttables"
2482 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2483 exr_decoder_deps="zlib"
2484 ffv1_decoder_select="rangecoder"
2485 ffv1_encoder_select="rangecoder"
2486 ffvhuff_decoder_select="huffyuv_decoder"
2487 ffvhuff_encoder_select="huffyuv_encoder"
2488 fic_decoder_select="golomb"
2489 flac_decoder_select="flacdsp"
2490 flac_encoder_select="bswapdsp flacdsp lpc"
2491 flashsv2_decoder_deps="zlib"
2492 flashsv2_encoder_deps="zlib"
2493 flashsv_decoder_deps="zlib"
2494 flashsv_encoder_deps="zlib"
2495 flv_decoder_select="h263_decoder"
2496 flv_encoder_select="h263_encoder"
2497 fourxm_decoder_select="blockdsp bswapdsp"
2498 fraps_decoder_select="bswapdsp huffman"
2499 g2m_decoder_deps="zlib"
2500 g2m_decoder_select="blockdsp idctdsp jpegtables"
2501 g729_decoder_select="audiodsp"
2502 h261_decoder_select="mpegvideo"
2503 h261_encoder_select="aandcttables mpegvideoenc"
2504 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2505 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2506 h263i_decoder_select="h263_decoder"
2507 h263p_decoder_select="h263_decoder"
2508 h263p_encoder_select="h263_encoder"
2509 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2510 h264_decoder_suggest="error_resilience"
2511 hap_decoder_select="snappy texturedsp"
2512 hap_encoder_deps="libsnappy"
2513 hap_encoder_select="texturedspenc"
2514 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2515 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2516 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2517 iac_decoder_select="imc_decoder"
2518 imc_decoder_select="bswapdsp fft mdct sinewin"
2519 indeo3_decoder_select="hpeldsp"
2520 indeo4_decoder_select="ividsp"
2521 indeo5_decoder_select="ividsp"
2522 interplay_video_decoder_select="hpeldsp"
2523 jpegls_decoder_select="mjpeg_decoder"
2524 jv_decoder_select="blockdsp"
2525 lagarith_decoder_select="llviddsp"
2526 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2527 magicyuv_decoder_select="llviddsp"
2528 magicyuv_encoder_select="llvidencdsp"
2529 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2530 metasound_decoder_select="lsp mdct sinewin"
2531 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2532 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2533 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2534 mjpegb_decoder_select="mjpeg_decoder"
2535 mlp_decoder_select="mlp_parser"
2536 mlp_encoder_select="lpc"
2537 motionpixels_decoder_select="bswapdsp"
2538 mp1_decoder_select="mpegaudio"
2539 mp1float_decoder_select="mpegaudio"
2540 mp2_decoder_select="mpegaudio"
2541 mp2float_decoder_select="mpegaudio"
2542 mp3_decoder_select="mpegaudio"
2543 mp3adu_decoder_select="mpegaudio"
2544 mp3adufloat_decoder_select="mpegaudio"
2545 mp3float_decoder_select="mpegaudio"
2546 mp3on4_decoder_select="mpegaudio"
2547 mp3on4float_decoder_select="mpegaudio"
2548 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2549 mpc8_decoder_select="mpegaudiodsp"
2550 mpegvideo_decoder_select="mpegvideo"
2551 mpeg1video_decoder_select="mpegvideo"
2552 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2553 mpeg2video_decoder_select="mpegvideo"
2554 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2555 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2556 mpeg4_encoder_select="h263_encoder"
2557 msa1_decoder_select="mss34dsp"
2558 mscc_decoder_deps="zlib"
2559 msmpeg4v1_decoder_select="h263_decoder"
2560 msmpeg4v2_decoder_select="h263_decoder"
2561 msmpeg4v2_encoder_select="h263_encoder"
2562 msmpeg4v3_decoder_select="h263_decoder"
2563 msmpeg4v3_encoder_select="h263_encoder"
2564 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2565 mts2_decoder_select="mss34dsp"
2566 mxpeg_decoder_select="mjpeg_decoder"
2567 nellymoser_decoder_select="mdct sinewin"
2568 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2569 nuv_decoder_select="idctdsp lzo"
2570 on2avc_decoder_select="mdct"
2571 opus_decoder_deps="swresample"
2572 opus_decoder_select="mdct15"
2573 opus_encoder_select="audio_frame_queue mdct15"
2574 png_decoder_deps="zlib"
2575 png_encoder_deps="zlib"
2576 png_encoder_select="llvidencdsp"
2577 prores_decoder_select="blockdsp idctdsp"
2578 prores_encoder_select="fdctdsp"
2579 qcelp_decoder_select="lsp"
2580 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2581 ra_144_decoder_select="audiodsp"
2582 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2583 ralf_decoder_select="golomb"
2584 rawvideo_decoder_select="bswapdsp"
2585 rscc_decoder_deps="zlib"
2586 rtjpeg_decoder_select="me_cmp"
2587 rv10_decoder_select="h263_decoder"
2588 rv10_encoder_select="h263_encoder"
2589 rv20_decoder_select="h263_decoder"
2590 rv20_encoder_select="h263_encoder"
2591 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2592 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2593 screenpresso_decoder_deps="zlib"
2594 shorten_decoder_select="bswapdsp"
2595 sipr_decoder_select="lsp"
2596 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2597 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2598 sonic_decoder_select="golomb rangecoder"
2599 sonic_encoder_select="golomb rangecoder"
2600 sonic_ls_encoder_select="golomb rangecoder"
2601 sp5x_decoder_select="mjpeg_decoder"
2602 srgc_decoder_deps="zlib"
2603 svq1_decoder_select="hpeldsp"
2604 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2605 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2606 svq3_decoder_suggest="zlib"
2607 tak_decoder_select="audiodsp"
2608 tdsc_decoder_deps="zlib"
2609 tdsc_decoder_select="mjpeg_decoder"
2610 theora_decoder_select="vp3_decoder"
2611 thp_decoder_select="mjpeg_decoder"
2612 tiff_decoder_suggest="zlib lzma"
2613 tiff_encoder_suggest="zlib"
2614 truehd_decoder_select="mlp_parser"
2615 truehd_encoder_select="lpc"
2616 truemotion2_decoder_select="bswapdsp"
2617 truespeech_decoder_select="bswapdsp"
2618 tscc_decoder_deps="zlib"
2619 twinvq_decoder_select="mdct lsp sinewin"
2620 txd_decoder_select="texturedsp"
2621 utvideo_decoder_select="bswapdsp llviddsp"
2622 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2623 vble_decoder_select="llviddsp"
2624 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2625 vc1image_decoder_select="vc1_decoder"
2626 vorbis_decoder_select="mdct"
2627 vorbis_encoder_select="mdct"
2628 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2629 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2630 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2631 vp6a_decoder_select="vp6_decoder"
2632 vp6f_decoder_select="vp6_decoder"
2633 vp7_decoder_select="h264pred videodsp vp8dsp"
2634 vp8_decoder_select="h264pred videodsp vp8dsp"
2635 vp9_decoder_select="videodsp vp9_parser"
2636 webp_decoder_select="vp8_decoder exif"
2637 wmalossless_decoder_select="llauddsp"
2638 wmapro_decoder_select="mdct sinewin wma_freqs"
2639 wmav1_decoder_select="mdct sinewin wma_freqs"
2640 wmav1_encoder_select="mdct sinewin wma_freqs"
2641 wmav2_decoder_select="mdct sinewin wma_freqs"
2642 wmav2_encoder_select="mdct sinewin wma_freqs"
2643 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2644 wmv1_decoder_select="h263_decoder"
2645 wmv1_encoder_select="h263_encoder"
2646 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2647 wmv2_encoder_select="h263_encoder wmv2dsp"
2648 wmv3_decoder_select="vc1_decoder"
2649 wmv3image_decoder_select="wmv3_decoder"
2650 xma1_decoder_select="wmapro_decoder"
2651 xma2_decoder_select="wmapro_decoder"
2652 zerocodec_decoder_deps="zlib"
2653 zlib_decoder_deps="zlib"
2654 zlib_encoder_deps="zlib"
2655 zmbv_decoder_deps="zlib"
2656 zmbv_encoder_deps="zlib"
2657
2658 # hardware accelerators
2659 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2660 cuda_deps_any="libdl LoadLibrary"
2661 cuvid_deps="cuda"
2662 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2663 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2664 nvdec_deps="cuda"
2665 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2666 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2667 xvmc_deps="X11_extensions_XvMClib_h"
2668
2669 h263_vaapi_hwaccel_deps="vaapi"
2670 h263_vaapi_hwaccel_select="h263_decoder"
2671 h263_videotoolbox_hwaccel_deps="videotoolbox"
2672 h263_videotoolbox_hwaccel_select="h263_decoder"
2673 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2674 h264_d3d11va_hwaccel_deps="d3d11va"
2675 h264_d3d11va_hwaccel_select="h264_decoder"
2676 h264_d3d11va2_hwaccel_deps="d3d11va"
2677 h264_d3d11va2_hwaccel_select="h264_decoder"
2678 h264_dxva2_hwaccel_deps="dxva2"
2679 h264_dxva2_hwaccel_select="h264_decoder"
2680 h264_mediacodec_hwaccel_deps="mediacodec"
2681 h264_mmal_hwaccel_deps="mmal"
2682 h264_nvdec_hwaccel_deps="nvdec"
2683 h264_nvdec_hwaccel_select="h264_decoder"
2684 h264_qsv_hwaccel_deps="libmfx"
2685 h264_vaapi_hwaccel_deps="vaapi"
2686 h264_vaapi_hwaccel_select="h264_decoder"
2687 h264_vdpau_hwaccel_deps="vdpau"
2688 h264_vdpau_hwaccel_select="h264_decoder"
2689 h264_videotoolbox_hwaccel_deps="videotoolbox"
2690 h264_videotoolbox_hwaccel_select="h264_decoder"
2691 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2692 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2693 hevc_d3d11va_hwaccel_select="hevc_decoder"
2694 hevc_mediacodec_hwaccel_deps="mediacodec"
2695 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2696 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2697 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2698 hevc_dxva2_hwaccel_select="hevc_decoder"
2699 hevc_nvdec_hwaccel_deps="nvdec"
2700 hevc_nvdec_hwaccel_select="hevc_decoder"
2701 hevc_qsv_hwaccel_deps="libmfx"
2702 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2703 hevc_vaapi_hwaccel_select="hevc_decoder"
2704 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2705 hevc_vdpau_hwaccel_select="hevc_decoder"
2706 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2707 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2708 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2709 mpeg_xvmc_hwaccel_deps="xvmc"
2710 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2711 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2712 mpeg1_nvdec_hwaccel_deps="nvdec"
2713 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2714 mpeg1_vdpau_hwaccel_deps="vdpau"
2715 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2716 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2717 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2718 mpeg1_xvmc_hwaccel_deps="xvmc"
2719 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2720 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2721 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2722 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2724 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_dxva2_hwaccel_deps="dxva2"
2726 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2728 mpeg2_mmal_hwaccel_deps="mmal"
2729 mpeg2_nvdec_hwaccel_deps="nvdec"
2730 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_qsv_hwaccel_deps="libmfx"
2732 mpeg2_vaapi_hwaccel_deps="vaapi"
2733 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2734 mpeg2_vdpau_hwaccel_deps="vdpau"
2735 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2736 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2737 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2738 mpeg2_xvmc_hwaccel_deps="xvmc"
2739 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2740 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2741 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2742 mpeg4_mmal_hwaccel_deps="mmal"
2743 mpeg4_nvdec_hwaccel_deps="nvdec"
2744 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2745 mpeg4_vaapi_hwaccel_deps="vaapi"
2746 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2747 mpeg4_vdpau_hwaccel_deps="vdpau"
2748 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2749 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2750 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2751 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2752 vc1_d3d11va_hwaccel_deps="d3d11va"
2753 vc1_d3d11va_hwaccel_select="vc1_decoder"
2754 vc1_d3d11va2_hwaccel_deps="d3d11va"
2755 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2756 vc1_dxva2_hwaccel_deps="dxva2"
2757 vc1_dxva2_hwaccel_select="vc1_decoder"
2758 vc1_mmal_hwaccel_deps="mmal"
2759 vc1_nvdec_hwaccel_deps="nvdec"
2760 vc1_nvdec_hwaccel_select="vc1_decoder"
2761 vc1_qsv_hwaccel_deps="libmfx"
2762 vc1_vaapi_hwaccel_deps="vaapi"
2763 vc1_vaapi_hwaccel_select="vc1_decoder"
2764 vc1_vdpau_hwaccel_deps="vdpau"
2765 vc1_vdpau_hwaccel_select="vc1_decoder"
2766 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2767 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2768 vp8_mediacodec_hwaccel_deps="mediacodec"
2769 vp8_qsv_hwaccel_deps="libmfx"
2770 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2771 vp9_d3d11va_hwaccel_select="vp9_decoder"
2772 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2773 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2774 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2775 vp9_dxva2_hwaccel_select="vp9_decoder"
2776 vp9_mediacodec_hwaccel_deps="mediacodec"
2777 vp9_nvdec_hwaccel_deps="nvdec"
2778 vp9_nvdec_hwaccel_select="vp9_decoder"
2779 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2780 vp9_vaapi_hwaccel_select="vp9_decoder"
2781 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2782 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2783 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2784 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2785 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2786 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2787
2788 # hardware-accelerated codecs
2789 omx_deps="libdl pthreads"
2790 omx_rpi_select="omx"
2791 qsv_deps="libmfx"
2792 qsvdec_select="qsv"
2793 qsvenc_select="qsv"
2794 qsvvpp_select="qsv"
2795 vaapi_encode_deps="vaapi"
2796 v4l2_m2m_deps_any="linux_videodev2_h"
2797
2798 hwupload_cuda_filter_deps="cuda"
2799 scale_npp_filter_deps="cuda libnpp"
2800 scale_cuda_filter_deps="cuda_sdk"
2801 thumbnail_cuda_filter_deps="cuda_sdk"
2802
2803 nvenc_deps="cuda"
2804 nvenc_deps_any="libdl LoadLibrary"
2805 nvenc_encoder_deps="nvenc"
2806
2807 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2808 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2809 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2810 h264_cuvid_decoder_deps="cuvid"
2811 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2812 h264_mediacodec_decoder_deps="mediacodec"
2813 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2814 h264_mmal_decoder_deps="mmal"
2815 h264_nvenc_encoder_deps="nvenc"
2816 h264_omx_encoder_deps="omx"
2817 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2818 h264_qsv_encoder_select="qsvenc"
2819 h264_rkmpp_decoder_deps="rkmpp"
2820 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2821 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2822 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2823 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2824 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2825 hevc_cuvid_decoder_deps="cuvid"
2826 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2827 hevc_mediacodec_decoder_deps="mediacodec"
2828 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2829 hevc_nvenc_encoder_deps="nvenc"
2830 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2831 hevc_qsv_encoder_select="hevcparse qsvenc"
2832 hevc_rkmpp_decoder_deps="rkmpp"
2833 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2834 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2835 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2836 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2837 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2838 mjpeg_cuvid_decoder_deps="cuvid"
2839 mjpeg_qsv_encoder_deps="libmfx"
2840 mjpeg_qsv_encoder_select="qsvenc"
2841 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2842 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2843 mpeg1_cuvid_decoder_deps="cuvid"
2844 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2845 mpeg2_crystalhd_decoder_select="crystalhd"
2846 mpeg2_cuvid_decoder_deps="cuvid"
2847 mpeg2_mmal_decoder_deps="mmal"
2848 mpeg2_mediacodec_decoder_deps="mediacodec"
2849 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2850 mpeg2_qsv_encoder_select="qsvenc"
2851 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2852 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2853 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2854 mpeg4_crystalhd_decoder_select="crystalhd"
2855 mpeg4_cuvid_decoder_deps="cuvid"
2856 mpeg4_mediacodec_decoder_deps="mediacodec"
2857 mpeg4_mmal_decoder_deps="mmal"
2858 mpeg4_omx_encoder_deps="omx"
2859 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2860 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2861 msmpeg4_crystalhd_decoder_select="crystalhd"
2862 nvenc_h264_encoder_select="h264_nvenc_encoder"
2863 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2864 vc1_crystalhd_decoder_select="crystalhd"
2865 vc1_cuvid_decoder_deps="cuvid"
2866 vc1_mmal_decoder_deps="mmal"
2867 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2868 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2869 vp8_cuvid_decoder_deps="cuvid"
2870 vp8_mediacodec_decoder_deps="mediacodec"
2871 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2872 vp8_rkmpp_decoder_deps="rkmpp"
2873 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2874 vp8_vaapi_encoder_select="vaapi_encode"
2875 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2876 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2877 vp9_cuvid_decoder_deps="cuvid"
2878 vp9_mediacodec_decoder_deps="mediacodec"
2879 vp9_rkmpp_decoder_deps="rkmpp"
2880 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2881 vp9_vaapi_encoder_select="vaapi_encode"
2882 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2883 wmv3_crystalhd_decoder_select="crystalhd"
2884
2885 # parsers
2886 aac_parser_select="adts_header"
2887 h264_parser_select="golomb h264dsp h264parse"
2888 hevc_parser_select="hevcparse"
2889 mpegaudio_parser_select="mpegaudioheader"
2890 mpegvideo_parser_select="mpegvideo"
2891 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2892 vc1_parser_select="vc1dsp"
2893
2894 # bitstream_filters
2895 aac_adtstoasc_bsf_select="adts_header"
2896 h264_metadata_bsf_select="cbs_h264"
2897 h264_redundant_pps_bsf_select="cbs_h264"
2898 hevc_metadata_bsf_select="cbs_h265"
2899 mjpeg2jpeg_bsf_select="jpegtables"
2900 mpeg2_metadata_bsf_select="cbs_mpeg2"
2901 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2902
2903 # external libraries
2904 aac_at_decoder_deps="audiotoolbox"
2905 ac3_at_decoder_deps="audiotoolbox"
2906 ac3_at_decoder_select="ac3_parser"
2907 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2908 alac_at_decoder_deps="audiotoolbox"
2909 amr_nb_at_decoder_deps="audiotoolbox"
2910 avisynth_deps_any="libdl LoadLibrary"
2911 avisynth_demuxer_deps="avisynth"
2912 avisynth_demuxer_select="riffdec"
2913 eac3_at_decoder_deps="audiotoolbox"
2914 eac3_at_decoder_select="ac3_parser"
2915 gsm_ms_at_decoder_deps="audiotoolbox"
2916 ilbc_at_decoder_deps="audiotoolbox"
2917 mp1_at_decoder_deps="audiotoolbox"
2918 mp2_at_decoder_deps="audiotoolbox"
2919 mp3_at_decoder_deps="audiotoolbox"
2920 mp1_at_decoder_select="mpegaudioheader"
2921 mp2_at_decoder_select="mpegaudioheader"
2922 mp3_at_decoder_select="mpegaudioheader"
2923 pcm_alaw_at_decoder_deps="audiotoolbox"
2924 pcm_mulaw_at_decoder_deps="audiotoolbox"
2925 qdmc_at_decoder_deps="audiotoolbox"
2926 qdm2_at_decoder_deps="audiotoolbox"
2927 aac_at_encoder_deps="audiotoolbox"
2928 aac_at_encoder_select="audio_frame_queue"
2929 alac_at_encoder_deps="audiotoolbox"
2930 alac_at_encoder_select="audio_frame_queue"
2931 ilbc_at_encoder_deps="audiotoolbox"
2932 ilbc_at_encoder_select="audio_frame_queue"
2933 pcm_alaw_at_encoder_deps="audiotoolbox"
2934 pcm_alaw_at_encoder_select="audio_frame_queue"
2935 pcm_mulaw_at_encoder_deps="audiotoolbox"
2936 pcm_mulaw_at_encoder_select="audio_frame_queue"
2937 chromaprint_muxer_deps="chromaprint"
2938 h264_videotoolbox_encoder_deps="pthreads"
2939 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2940 hevc_videotoolbox_encoder_deps="pthreads"
2941 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2942 libcelt_decoder_deps="libcelt"
2943 libfdk_aac_decoder_deps="libfdk_aac"
2944 libfdk_aac_encoder_deps="libfdk_aac"
2945 libfdk_aac_encoder_select="audio_frame_queue"
2946 libgme_demuxer_deps="libgme"
2947 libgsm_decoder_deps="libgsm"
2948 libgsm_encoder_deps="libgsm"
2949 libgsm_ms_decoder_deps="libgsm"
2950 libgsm_ms_encoder_deps="libgsm"
2951 libilbc_decoder_deps="libilbc"
2952 libilbc_encoder_deps="libilbc"
2953 libkvazaar_encoder_deps="libkvazaar"
2954 libmodplug_demuxer_deps="libmodplug"
2955 libmp3lame_encoder_deps="libmp3lame"
2956 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2957 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2958 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2959 libopencore_amrnb_encoder_select="audio_frame_queue"
2960 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2961 libopenh264_decoder_deps="libopenh264"
2962 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2963 libopenh264_encoder_deps="libopenh264"
2964 libopenjpeg_decoder_deps="libopenjpeg"
2965 libopenjpeg_encoder_deps="libopenjpeg"
2966 libopenmpt_demuxer_deps="libopenmpt"
2967 libopus_decoder_deps="libopus"
2968 libopus_encoder_deps="libopus"
2969 libopus_encoder_select="audio_frame_queue"
2970 librsvg_decoder_deps="librsvg"
2971 libshine_encoder_deps="libshine"
2972 libshine_encoder_select="audio_frame_queue"
2973 libspeex_decoder_deps="libspeex"
2974 libspeex_encoder_deps="libspeex"
2975 libspeex_encoder_select="audio_frame_queue"
2976 libtheora_encoder_deps="libtheora"
2977 libtwolame_encoder_deps="libtwolame"
2978 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2979 libvorbis_decoder_deps="libvorbis"
2980 libvorbis_encoder_deps="libvorbis libvorbisenc"
2981 libvorbis_encoder_select="audio_frame_queue"
2982 libvpx_vp8_decoder_deps="libvpx"
2983 libvpx_vp8_encoder_deps="libvpx"
2984 libvpx_vp9_decoder_deps="libvpx"
2985 libvpx_vp9_encoder_deps="libvpx"
2986 libwavpack_encoder_deps="libwavpack"
2987 libwavpack_encoder_select="audio_frame_queue"
2988 libwebp_encoder_deps="libwebp"
2989 libwebp_anim_encoder_deps="libwebp"
2990 libx262_encoder_deps="libx262"
2991 libx264_encoder_deps="libx264"
2992 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2993 libx264rgb_encoder_select="libx264_encoder"
2994 libx265_encoder_deps="libx265"
2995 libxavs_encoder_deps="libxavs"
2996 libxvid_encoder_deps="libxvid"
2997 libzvbi_teletext_decoder_deps="libzvbi"
2998 videotoolbox_suggest="coreservices"
2999 videotoolbox_deps="corefoundation coremedia corevideo"
3000 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3001
3002 # demuxers / muxers
3003 ac3_demuxer_select="ac3_parser"
3004 aiff_muxer_select="iso_media"
3005 asf_demuxer_select="riffdec"
3006 asf_o_demuxer_select="riffdec"
3007 asf_muxer_select="riffenc"
3008 asf_stream_muxer_select="asf_muxer"
3009 avi_demuxer_select="iso_media riffdec exif"
3010 avi_muxer_select="riffenc"
3011 caf_demuxer_select="iso_media riffdec"
3012 caf_muxer_select="iso_media"
3013 dash_muxer_select="mp4_muxer"
3014 dash_demuxer_deps="libxml2"
3015 dirac_demuxer_select="dirac_parser"
3016 dts_demuxer_select="dca_parser"
3017 dtshd_demuxer_select="dca_parser"
3018 dv_demuxer_select="dvprofile"
3019 dv_muxer_select="dvprofile"
3020 dxa_demuxer_select="riffdec"
3021 eac3_demuxer_select="ac3_parser"
3022 f4v_muxer_select="mov_muxer"
3023 fifo_muxer_deps="threads"
3024 flac_demuxer_select="flac_parser"
3025 hds_muxer_select="flv_muxer"
3026 hls_muxer_select="mpegts_muxer"
3027 hls_muxer_suggest="gcrypt openssl"
3028 image2_alias_pix_demuxer_select="image2_demuxer"
3029 image2_brender_pix_demuxer_select="image2_demuxer"
3030 ipod_muxer_select="mov_muxer"
3031 ismv_muxer_select="mov_muxer"
3032 matroska_audio_muxer_select="matroska_muxer"
3033 matroska_demuxer_select="iso_media riffdec"
3034 matroska_demuxer_suggest="bzlib lzo zlib"
3035 matroska_muxer_select="iso_media riffenc"
3036 mmf_muxer_select="riffenc"
3037 mov_demuxer_select="iso_media riffdec"
3038 mov_demuxer_suggest="zlib"
3039 mov_muxer_select="iso_media riffenc rtpenc_chain"
3040 mp3_demuxer_select="mpegaudio_parser"
3041 mp3_muxer_select="mpegaudioheader"
3042 mp4_muxer_select="mov_muxer"
3043 mpegts_demuxer_select="iso_media"
3044 mpegts_muxer_select="adts_muxer latm_muxer"
3045 mpegtsraw_demuxer_select="mpegts_demuxer"
3046 mxf_d10_muxer_select="mxf_muxer"
3047 mxf_opatom_muxer_select="mxf_muxer"
3048 nut_muxer_select="riffenc"
3049 nuv_demuxer_select="riffdec"
3050 oga_muxer_select="ogg_muxer"
3051 ogg_demuxer_select="dirac_parse"
3052 ogv_muxer_select="ogg_muxer"
3053 opus_muxer_select="ogg_muxer"
3054 psp_muxer_select="mov_muxer"
3055 rtp_demuxer_select="sdp_demuxer"
3056 rtp_muxer_select="golomb"
3057 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3058 rtsp_demuxer_select="http_protocol rtpdec"
3059 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3060 sap_demuxer_select="sdp_demuxer"
3061 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3062 sdp_demuxer_select="rtpdec"
3063 smoothstreaming_muxer_select="ismv_muxer"
3064 spdif_demuxer_select="adts_header"
3065 spdif_muxer_select="adts_header"
3066 spx_muxer_select="ogg_muxer"
3067 swf_demuxer_suggest="zlib"
3068 tak_demuxer_select="tak_parser"
3069 tg2_muxer_select="mov_muxer"
3070 tgp_muxer_select="mov_muxer"
3071 vobsub_demuxer_select="mpegps_demuxer"
3072 w64_demuxer_select="wav_demuxer"
3073 w64_muxer_select="wav_muxer"
3074 wav_demuxer_select="riffdec"
3075 wav_muxer_select="riffenc"
3076 webm_muxer_select="iso_media riffenc"
3077 webm_dash_manifest_demuxer_select="matroska_demuxer"
3078 wtv_demuxer_select="mpegts_demuxer riffdec"
3079 wtv_muxer_select="mpegts_muxer riffenc"
3080 xmv_demuxer_select="riffdec"
3081 xwma_demuxer_select="riffdec"
3082
3083 # indevs / outdevs
3084 alsa_indev_deps="alsa"
3085 alsa_outdev_deps="alsa"
3086 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3087 avfoundation_indev_suggest="coregraphics applicationservices"
3088 avfoundation_indev_extralibs="-framework Foundation"
3089 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3090 caca_outdev_deps="libcaca"
3091 decklink_deps_any="libdl LoadLibrary"
3092 decklink_indev_deps="decklink threads"
3093 decklink_indev_extralibs="-lstdc++"
3094 decklink_outdev_deps="decklink threads"
3095 decklink_outdev_extralibs="-lstdc++"
3096 libndi_newtek_indev_deps="libndi_newtek"
3097 libndi_newtek_indev_extralibs="-lndi"
3098 libndi_newtek_outdev_deps="libndi_newtek"
3099 libndi_newtek_outdev_extralibs="-lndi"
3100 dshow_indev_deps="IBaseFilter"
3101 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3102 fbdev_indev_deps="linux_fb_h"
3103 fbdev_outdev_deps="linux_fb_h"
3104 gdigrab_indev_deps="CreateDIBSection"
3105 gdigrab_indev_extralibs="-lgdi32"
3106 gdigrab_indev_select="bmp_decoder"
3107 iec61883_indev_deps="libiec61883"
3108 jack_indev_deps="libjack"
3109 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3110 kmsgrab_indev_deps="libdrm"
3111 lavfi_indev_deps="avfilter"
3112 libcdio_indev_deps="libcdio"
3113 libdc1394_indev_deps="libdc1394"
3114 openal_indev_deps="openal"
3115 opengl_outdev_deps="opengl"
3116 oss_indev_deps_any="sys_soundcard_h"
3117 oss_outdev_deps_any="sys_soundcard_h"
3118 pulse_indev_deps="libpulse"
3119 pulse_outdev_deps="libpulse"
3120 sdl2_outdev_deps="sdl2"
3121 sndio_indev_deps="sndio"
3122 sndio_outdev_deps="sndio"
3123 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3124 v4l2_indev_suggest="libv4l2"
3125 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3126 v4l2_outdev_suggest="libv4l2"
3127 vfwcap_indev_deps="vfw32 vfwcap_defines"
3128 xcbgrab_indev_deps="libxcb"
3129 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3130 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3131 xv_outdev_extralibs="-lXv -lX11 -lXext"
3132
3133 # protocols
3134 async_protocol_deps="threads"
3135 bluray_protocol_deps="libbluray"
3136 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3137 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3138 ffrtmpcrypt_protocol_select="tcp_protocol"
3139 ffrtmphttp_protocol_conflict="librtmp_protocol"
3140 ffrtmphttp_protocol_select="http_protocol"
3141 ftp_protocol_select="tcp_protocol"
3142 gopher_protocol_select="network"
3143 http_protocol_select="tcp_protocol"
3144 http_protocol_suggest="zlib"
3145 httpproxy_protocol_select="tcp_protocol"
3146 httpproxy_protocol_suggest="zlib"
3147 https_protocol_select="tls_protocol"
3148 https_protocol_suggest="zlib"
3149 icecast_protocol_select="http_protocol"
3150 librtmp_protocol_deps="librtmp"
3151 librtmpe_protocol_deps="librtmp"
3152 librtmps_protocol_deps="librtmp"
3153 librtmpt_protocol_deps="librtmp"
3154 librtmpte_protocol_deps="librtmp"
3155 libsmbclient_protocol_deps="libsmbclient gplv3"
3156 libssh_protocol_deps="libssh"
3157 mmsh_protocol_select="http_protocol"
3158 mmst_protocol_select="network"
3159 rtmp_protocol_conflict="librtmp_protocol"
3160 rtmp_protocol_select="tcp_protocol"
3161 rtmp_protocol_suggest="zlib"
3162 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3163 rtmpe_protocol_suggest="zlib"
3164 rtmps_protocol_conflict="librtmp_protocol"
3165 rtmps_protocol_select="tls_protocol"
3166 rtmps_protocol_suggest="zlib"
3167 rtmpt_protocol_select="ffrtmphttp_protocol"
3168 rtmpt_protocol_suggest="zlib"
3169 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3170 rtmpte_protocol_suggest="zlib"
3171 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3172 rtmpts_protocol_suggest="zlib"
3173 rtp_protocol_select="udp_protocol"
3174 schannel_conflict="openssl gnutls"
3175 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3176 sctp_protocol_select="network"
3177 securetransport_conflict="openssl gnutls"
3178 srtp_protocol_select="rtp_protocol srtp"
3179 tcp_protocol_select="network"
3180 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3181 tls_protocol_select="tcp_protocol"
3182 udp_protocol_select="network"
3183 udplite_protocol_select="network"
3184 unix_protocol_deps="sys_un_h"
3185 unix_protocol_select="network"
3186
3187 # filters
3188 afftfilt_filter_deps="avcodec"
3189 afftfilt_filter_select="fft"
3190 afir_filter_deps="avcodec"
3191 afir_filter_select="fft"
3192 amovie_filter_deps="avcodec avformat"
3193 aresample_filter_deps="swresample"
3194 ass_filter_deps="libass"
3195 atempo_filter_deps="avcodec"
3196 atempo_filter_select="rdft"
3197 azmq_filter_deps="libzmq"
3198 blackframe_filter_deps="gpl"
3199 boxblur_filter_deps="gpl"
3200 bs2b_filter_deps="libbs2b"
3201 colormatrix_filter_deps="gpl"
3202 coreimage_filter_deps="coreimage appkit"
3203 coreimage_filter_extralibs="-framework OpenGL"
3204 coreimagesrc_filter_deps="coreimage appkit"
3205 coreimagesrc_filter_extralibs="-framework OpenGL"
3206 cover_rect_filter_deps="avcodec avformat gpl"
3207 cropdetect_filter_deps="gpl"
3208 deinterlace_qsv_filter_deps="libmfx"
3209 deinterlace_vaapi_filter_deps="vaapi"
3210 delogo_filter_deps="gpl"
3211 deshake_filter_select="pixelutils"
3212 drawtext_filter_deps="libfreetype"
3213 drawtext_filter_suggest="libfontconfig libfribidi"
3214 elbg_filter_deps="avcodec"
3215 eq_filter_deps="gpl"
3216 fftfilt_filter_deps="avcodec"
3217 fftfilt_filter_select="rdft"
3218 find_rect_filter_deps="avcodec avformat gpl"
3219 firequalizer_filter_deps="avcodec"
3220 firequalizer_filter_select="rdft"
3221 flite_filter_deps="libflite"
3222 framerate_filter_select="pixelutils"
3223 frei0r_filter_deps="frei0r libdl"
3224 frei0r_src_filter_deps="frei0r libdl"
3225 fspp_filter_deps="gpl"
3226 geq_filter_deps="gpl"
3227 histeq_filter_deps="gpl"
3228 hqdn3d_filter_deps="gpl"
3229 interlace_filter_deps="gpl"
3230 kerndeint_filter_deps="gpl"
3231 ladspa_filter_deps="ladspa libdl"
3232 mcdeint_filter_deps="avcodec gpl"
3233 movie_filter_deps="avcodec avformat"
3234 mpdecimate_filter_deps="gpl"
3235 mpdecimate_filter_select="pixelutils"
3236 mptestsrc_filter_deps="gpl"
3237 negate_filter_deps="lut_filter"
3238 nnedi_filter_deps="gpl"
3239 ocr_filter_deps="libtesseract"
3240 ocv_filter_deps="libopencv"
3241 overlay_opencl_filter_deps="opencl"
3242 overlay_qsv_filter_deps="libmfx"
3243 overlay_qsv_filter_select="qsvvpp"
3244 owdenoise_filter_deps="gpl"
3245 pan_filter_deps="swresample"
3246 perspective_filter_deps="gpl"
3247 phase_filter_deps="gpl"
3248 pp7_filter_deps="gpl"
3249 pp_filter_deps="gpl postproc"
3250 pullup_filter_deps="gpl"
3251 removelogo_filter_deps="avcodec avformat swscale"
3252 repeatfields_filter_deps="gpl"
3253 resample_filter_deps="avresample"
3254 rubberband_filter_deps="librubberband"
3255 sab_filter_deps="gpl swscale"
3256 scale2ref_filter_deps="swscale"
3257 scale_filter_deps="swscale"
3258 scale_qsv_filter_deps="libmfx"
3259 select_filter_select="pixelutils"
3260 showcqt_filter_deps="avcodec avformat swscale"
3261 showcqt_filter_suggest="libfontconfig libfreetype"
3262 showcqt_filter_select="fft"
3263 showfreqs_filter_deps="avcodec"
3264 showfreqs_filter_select="fft"
3265 showspectrum_filter_deps="avcodec"
3266 showspectrum_filter_select="fft"
3267 showspectrumpic_filter_deps="avcodec"
3268 showspectrumpic_filter_select="fft"
3269 signature_filter_deps="gpl avcodec avformat"
3270 smartblur_filter_deps="gpl swscale"
3271 sofalizer_filter_deps="libmysofa avcodec"
3272 sofalizer_filter_select="fft"
3273 spectrumsynth_filter_deps="avcodec"
3274 spectrumsynth_filter_select="fft"
3275 spp_filter_deps="gpl avcodec"
3276 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3277 stereo3d_filter_deps="gpl"
3278 subtitles_filter_deps="avformat avcodec libass"
3279 super2xsai_filter_deps="gpl"
3280 pixfmts_super2xsai_test_deps="super2xsai_filter"
3281 tinterlace_filter_deps="gpl"
3282 tinterlace_merge_test_deps="tinterlace_filter"
3283 tinterlace_pad_test_deps="tinterlace_filter"
3284 tonemap_filter_deps="const_nan"
3285 unsharp_opencl_filter_deps="opencl"
3286 uspp_filter_deps="gpl avcodec"
3287 vaguedenoiser_filter_deps="gpl"
3288 vidstabdetect_filter_deps="libvidstab"
3289 vidstabtransform_filter_deps="libvidstab"
3290 libvmaf_filter_deps="libvmaf"
3291 zmq_filter_deps="libzmq"
3292 zoompan_filter_deps="swscale"
3293 zscale_filter_deps="libzimg const_nan"
3294 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3295 vpp_qsv_filter_deps="libmfx"
3296 vpp_qsv_filter_select="qsvvpp"
3297
3298 # examples
3299 avio_dir_cmd_deps="avformat avutil"
3300 avio_reading_deps="avformat avcodec avutil"
3301 decode_audio_example_deps="avcodec avutil"
3302 decode_video_example_deps="avcodec avutil"
3303 demuxing_decoding_example_deps="avcodec avformat avutil"
3304 encode_audio_example_deps="avcodec avutil"
3305 encode_video_example_deps="avcodec avutil"
3306 extract_mvs_example_deps="avcodec avformat avutil"
3307 filter_audio_example_deps="avfilter avutil"
3308 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3309 filtering_video_example_deps="avfilter avcodec avformat avutil"
3310 http_multiclient_example_deps="avformat avutil fork"
3311 hw_decode_example_deps="avcodec avformat avutil"
3312 metadata_example_deps="avformat avutil"
3313 muxing_example_deps="avcodec avformat avutil swscale"
3314 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3315 remuxing_example_deps="avcodec avformat avutil"
3316 resampling_audio_example_deps="avutil swresample"
3317 scaling_video_example_deps="avutil swscale"
3318 transcode_aac_example_deps="avcodec avformat swresample"
3319 transcoding_example_deps="avfilter avcodec avformat avutil"
3320
3321 # EXTRALIBS_LIST
3322 cpu_init_extralibs="pthreads_extralibs"
3323 cws2fws_extralibs="zlib_extralibs"
3324
3325 # libraries, in linking order
3326 avcodec_deps="avutil"
3327 avcodec_suggest="libm"
3328 avcodec_select="null_bsf"
3329 avdevice_deps="avformat avcodec avutil"
3330 avdevice_suggest="libm"
3331 avfilter_deps="avutil"
3332 avfilter_suggest="libm"
3333 avformat_deps="avcodec avutil"
3334 avformat_suggest="libm network zlib"
3335 avresample_deps="avutil"
3336 avresample_suggest="libm"
3337 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3338 postproc_deps="avutil gpl"
3339 postproc_suggest="libm"
3340 swresample_deps="avutil"
3341 swresample_suggest="libm libsoxr"
3342 swscale_deps="avutil"
3343 swscale_suggest="libm"
3344
3345 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3346 avfilter_extralibs="pthreads_extralibs"
3347 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3348
3349 # programs
3350 ffmpeg_deps="avcodec avfilter avformat swresample"
3351 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3352                null_filter
3353                trim_filter"
3354 ffmpeg_suggest="ole32 psapi shell32"
3355 ffplay_deps="avcodec avformat swscale swresample sdl2"
3356 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3357 ffplay_suggest="shell32"
3358 ffprobe_deps="avcodec avformat"
3359 ffprobe_suggest="shell32"
3360 ffserver_deps="avformat fork sarestart"
3361 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3362
3363 # documentation
3364 podpages_deps="perl"
3365 manpages_deps="perl pod2man"
3366 htmlpages_deps="perl"
3367 htmlpages_deps_any="makeinfo_html texi2html"
3368 txtpages_deps="perl makeinfo"
3369 doc_deps_any="manpages htmlpages podpages txtpages"
3370
3371 # default parameters
3372
3373 logfile="ffbuild/config.log"
3374
3375 # installation paths
3376 prefix_default="/usr/local"
3377 bindir_default='${prefix}/bin'
3378 datadir_default='${prefix}/share/ffmpeg'
3379 docdir_default='${prefix}/share/doc/ffmpeg'
3380 incdir_default='${prefix}/include'
3381 libdir_default='${prefix}/lib'
3382 mandir_default='${prefix}/share/man'
3383
3384 # toolchain
3385 ar_default="ar"
3386 cc_default="gcc"
3387 cxx_default="g++"
3388 host_cc_default="gcc"
3389 doxygen_default="doxygen"
3390 install="install"
3391 ln_s_default="ln -s -f"
3392 nm_default="nm -g"
3393 pkg_config_default=pkg-config
3394 ranlib_default="ranlib"
3395 strip_default="strip"
3396 version_script='--version-script'
3397 objformat="elf32"
3398 x86asmexe_default="nasm"
3399 windres_default="windres"
3400 nvcc_default="nvcc"
3401 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3402 striptype="direct"
3403
3404 # OS
3405 target_os_default=$(tolower $(uname -s))
3406 host_os=$target_os_default
3407
3408 # machine
3409 if test "$target_os_default" = aix; then
3410     arch_default=$(uname -p)
3411     strip_default="strip -X32_64"
3412 else
3413     arch_default=$(uname -m)
3414 fi
3415 cpu="generic"
3416 intrinsics="none"
3417
3418 # configurable options
3419 enable $PROGRAM_LIST
3420 enable $DOCUMENT_LIST
3421 enable $EXAMPLE_LIST
3422 enable $(filter_out avresample $LIBRARY_LIST)
3423 enable stripping
3424
3425 enable asm
3426 enable debug
3427 enable doc
3428 enable faan faandct faanidct
3429 enable optimizations
3430 enable runtime_cpudetect
3431 enable safe_bitstream_reader
3432 enable static
3433 enable swscale_alpha
3434 enable valgrind_backtrace
3435
3436 sws_max_filter_size_default=256
3437 set_default sws_max_filter_size
3438
3439 # internal components are enabled by default
3440 enable $EXTRALIBS_LIST
3441
3442 # Avoid external, non-system, libraries getting enabled by dependency resolution
3443 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3444
3445 # build settings
3446 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3447 LIBPREF="lib"
3448 LIBSUF=".a"
3449 FULLNAME='$(NAME)$(BUILDSUF)'
3450 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3451 SLIBPREF="lib"
3452 SLIBSUF=".so"
3453 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3454 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3455 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3456 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3457 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3458 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3459 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3460
3461 asflags_filter=echo
3462 cflags_filter=echo
3463 ldflags_filter=echo
3464
3465 AS_C='-c'
3466 AS_O='-o $@'
3467 CC_C='-c'
3468 CC_E='-E -o $@'
3469 CC_O='-o $@'
3470 CXX_C='-c'
3471 CXX_O='-o $@'
3472 OBJCC_C='-c'
3473 OBJCC_E='-E -o $@'
3474 OBJCC_O='-o $@'
3475 X86ASM_O='-o $@'
3476 LD_O='-o $@'
3477 LD_LIB='-l%'
3478 LD_PATH='-L'
3479 HOSTCC_C='-c'
3480 HOSTCC_E='-E -o $@'
3481 HOSTCC_O='-o $@'
3482 HOSTLD_O='-o $@'
3483 NVCC_C='-c'
3484 NVCC_O='-o $@'
3485
3486 host_extralibs='-lm'
3487 host_cflags_filter=echo
3488 host_ldflags_filter=echo
3489
3490 target_path='$(CURDIR)'
3491
3492 # since the object filename is not given with the -MM flag, the compiler
3493 # is only able to print the basename, and we must add the path ourselves
3494 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3495 DEPFLAGS='-MM'
3496
3497 mkdir -p ffbuild
3498
3499 # find source path
3500 if test -f configure; then
3501     source_path=.
3502 else
3503     source_path=$(cd $(dirname "$0"); pwd)
3504     case "$source_path" in
3505         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3506     esac
3507     test -e "$source_path/config.h" &&
3508         die "Out of tree builds are impossible with config.h in source dir."
3509 fi
3510
3511 for v in "$@"; do
3512     r=${v#*=}
3513     l=${v%"$r"}
3514     r=$(sh_quote "$r")
3515     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3516 done
3517
3518 find_things(){
3519     thing=$1
3520     pattern=$2
3521     file=$source_path/$3
3522     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3523 }
3524
3525 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3526 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3527 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3528 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3529 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3530 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3531 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3532 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3533 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3534
3535 find_things_extern(){
3536     thing=$1
3537     pattern=$2
3538     file=$source_path/$3
3539     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3540 }
3541
3542 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3543 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3544
3545 AVCODEC_COMPONENTS_LIST="
3546     $BSF_LIST
3547     $DECODER_LIST
3548     $ENCODER_LIST
3549     $HWACCEL_LIST
3550     $PARSER_LIST
3551 "
3552
3553 AVDEVICE_COMPONENTS_LIST="
3554     $INDEV_LIST
3555     $OUTDEV_LIST
3556 "
3557
3558 AVFILTER_COMPONENTS_LIST="
3559     $FILTER_LIST
3560 "
3561
3562 AVFORMAT_COMPONENTS_LIST="
3563     $DEMUXER_LIST
3564     $MUXER_LIST
3565     $PROTOCOL_LIST
3566 "
3567
3568 ALL_COMPONENTS="
3569     $AVCODEC_COMPONENTS_LIST
3570     $AVDEVICE_COMPONENTS_LIST
3571     $AVFILTER_COMPONENTS_LIST
3572     $AVFORMAT_COMPONENTS_LIST
3573 "
3574
3575 for n in $COMPONENT_LIST; do
3576     v=$(toupper ${n%s})_LIST
3577     eval enable \$$v
3578     eval ${n}_if_any="\$$v"
3579 done
3580
3581 enable $ARCH_EXT_LIST
3582
3583 die_unknown(){
3584     echo "Unknown option \"$1\"."
3585     echo "See $0 --help for available options."
3586     exit 1
3587 }
3588
3589 print_in_columns() {
3590     cols=$(expr $ncols / 24)
3591     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3592 }
3593
3594 show_list() {
3595     suffix=_$1
3596     shift
3597     echo $* | sed s/$suffix//g | print_in_columns
3598     exit 0
3599 }
3600
3601 rand_list(){
3602     IFS=', '
3603     set -- $*
3604     unset IFS
3605     for thing; do
3606         comp=${thing%:*}
3607         prob=${thing#$comp}
3608         prob=${prob#:}
3609         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3610         echo "prob ${prob:-0.5}"
3611         printf '%s\n' $comp
3612     done
3613 }
3614
3615 do_random(){
3616     action=$1
3617     shift
3618     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3619     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3620 }
3621
3622 for opt do
3623     optval="${opt#*=}"
3624     case "$opt" in
3625         --extra-ldflags=*)
3626             add_ldflags $optval
3627         ;;
3628         --extra-ldexeflags=*)
3629             add_ldexeflags $optval
3630         ;;
3631         --extra-ldsoflags=*)
3632             add_ldsoflags $optval
3633         ;;
3634         --extra-ldlibflags=*)
3635             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3636                  "removed in the future. Use --extra-ldsoflags instead."
3637             add_ldsoflags $optval
3638         ;;
3639         --extra-libs=*)
3640             add_extralibs $optval
3641         ;;
3642         --disable-devices)
3643             disable $INDEV_LIST $OUTDEV_LIST
3644         ;;
3645         --enable-debug=*)
3646             debuglevel="$optval"
3647         ;;
3648         --disable-programs)
3649             disable $PROGRAM_LIST
3650         ;;
3651         --disable-everything)
3652             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3653         ;;
3654         --disable-all)
3655             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3656             disable $LIBRARY_LIST $PROGRAM_LIST doc
3657             enable avutil
3658         ;;
3659         --enable-random|--disable-random)
3660             action=${opt%%-random}
3661             do_random ${action#--} $COMPONENT_LIST
3662         ;;
3663         --enable-random=*|--disable-random=*)
3664             action=${opt%%-random=*}
3665             do_random ${action#--} $optval
3666         ;;
3667         --enable-sdl)
3668             enable sdl2
3669         ;;
3670         --enable-*=*|--disable-*=*)
3671             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3672             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3673             eval list=\$$(toupper $thing)_LIST
3674             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3675             list=$(filter "$name" $list)
3676             [ "$list" = "" ] && warn "Option $opt did not match anything"
3677             $action $list
3678         ;;
3679         --enable-yasm|--disable-yasm)
3680             warn "The ${opt} option is only provided for compatibility and will be\n"\
3681                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3682             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3683         ;;
3684         --yasmexe=*)
3685             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3686                  "removed in the future. Use --x86asmexe instead."
3687             x86asmexe="$optval"
3688         ;;
3689         --enable-?*|--disable-?*)
3690             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3691             if is_in $option $COMPONENT_LIST; then
3692                 test $action = disable && action=unset
3693                 eval $action \$$(toupper ${option%s})_LIST
3694             elif is_in $option $CMDLINE_SELECT; then
3695                 $action $option
3696             else
3697                 die_unknown $opt
3698             fi
3699         ;;
3700         --list-*)
3701             NAME="${opt#--list-}"
3702             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3703             NAME=${NAME%s}
3704             eval show_list $NAME \$$(toupper $NAME)_LIST
3705         ;;
3706         --help|-h) show_help
3707         ;;
3708         --quiet|-q) quiet=yes
3709         ;;
3710         --fatal-warnings) enable fatal_warnings
3711         ;;
3712         --libfuzzer=*)
3713             libfuzzer_path="$optval"
3714         ;;
3715         *)
3716             optname="${opt%%=*}"
3717             optname="${optname#--}"
3718             optname=$(echo "$optname" | sed 's/-/_/g')
3719             if is_in $optname $CMDLINE_SET; then
3720                 eval $optname='$optval'
3721             elif is_in $optname $CMDLINE_APPEND; then
3722                 append $optname "$optval"
3723             else
3724                 die_unknown $opt
3725             fi
3726         ;;
3727     esac
3728 done
3729
3730 for e in $env; do
3731     eval "export $e"
3732 done
3733
3734 if disabled autodetect; then
3735
3736     # Unless iconv is explicitely disabled by the user, we still want to probe
3737     # for the iconv from the libc.
3738     disabled iconv || enable libc_iconv
3739
3740     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3741     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3742 fi
3743 # Mark specifically enabled, but normally autodetected libraries as requested.
3744 for lib in $AUTODETECT_LIBS; do
3745     enabled $lib && request $lib
3746 done
3747 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3748 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3749 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3750
3751 disabled logging && logfile=/dev/null
3752
3753 # command line configuration sanity checks
3754
3755 # we need to build at least one lib type
3756 if ! enabled_any static shared; then
3757     cat <<EOF
3758 At least one library type must be built.
3759 Specify --enable-static to build the static libraries or --enable-shared to
3760 build the shared libraries as well. To only build the shared libraries specify
3761 --disable-static in addition to --enable-shared.
3762 EOF
3763     exit 1
3764 fi
3765
3766 die_license_disabled() {
3767     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3768 }
3769
3770 die_license_disabled_gpl() {
3771     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3772 }
3773
3774 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3775 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3776
3777 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3778 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3779
3780 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3781
3782 enabled_all gnutls openssl &&
3783     die "GnuTLS and OpenSSL must not be enabled at the same time."
3784
3785 # Disable all the library-specific components if the library itself
3786 # is disabled, see AVCODEC_LIST and following _LIST variables.
3787
3788 disable_components(){
3789     disabled ${1} && disable $(
3790         eval components="\$$(toupper ${1})_COMPONENTS"
3791         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3792     )
3793 }
3794
3795 map 'disable_components $v' $LIBRARY_LIST
3796
3797 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3798 set >> $logfile
3799
3800 test -n "$valgrind" && toolchain="valgrind-memcheck"
3801
3802 enabled ossfuzz && {
3803     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3804     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3805 }
3806
3807 case "$toolchain" in
3808     *-asan)
3809         cc_default="${toolchain%-asan}"
3810         add_cflags  -fsanitize=address
3811         add_ldflags -fsanitize=address
3812     ;;
3813     *-msan)
3814         cc_default="${toolchain%-msan}"
3815         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3816         add_ldflags -fsanitize=memory
3817     ;;
3818     *-tsan)
3819         cc_default="${toolchain%-tsan}"
3820         add_cflags  -fsanitize=thread -fPIE
3821         add_ldflags -fsanitize=thread -pie
3822         case "$toolchain" in
3823             gcc-tsan)
3824                 add_cflags  -fPIC
3825                 add_ldflags -fPIC
3826                 ;;
3827         esac
3828     ;;
3829     *-usan)
3830         cc_default="${toolchain%-usan}"
3831         add_cflags  -fsanitize=undefined
3832         add_ldflags -fsanitize=undefined
3833     ;;
3834     valgrind-*)
3835         target_exec_default="valgrind"
3836         case "$toolchain" in
3837             valgrind-massif)
3838                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3839                 ;;
3840             valgrind-memcheck)
3841                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3842                 ;;
3843         esac
3844     ;;
3845     msvc)
3846         # Check whether the current MSVC version needs the C99 converter.
3847         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3848         # support enough of C99 to build ffmpeg. Default to the new
3849         # behaviour if the regexp was unable to match anything, since this
3850         # successfully parses the version number of existing supported
3851         # versions that require the converter (MSVC 2010 and 2012).
3852         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3853         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3854             cc_default="cl"
3855             cxx_default="cl"
3856         else
3857             cc_default="c99wrap cl"
3858             cxx_default="c99wrap cl"
3859         fi
3860         ld_default="$source_path/compat/windows/mslink"
3861         nm_default="dumpbin -symbols"
3862         ar_default="lib"
3863         case "$arch" in
3864         aarch64|arm64)
3865             as_default="armasm64"
3866             ;;
3867         arm*)
3868             as_default="armasm"
3869             ;;
3870         esac
3871         target_os_default="win32"
3872         # Use a relative path for TMPDIR. This makes sure all the
3873         # ffconf temp files are written with a relative path, avoiding
3874         # issues with msys/win32 path conversion for MSVC parameters
3875         # such as -Fo<file> or -out:<file>.
3876         TMPDIR=.
3877     ;;
3878     icl)
3879         cc_default="icl"
3880         ld_default="xilink"
3881         nm_default="dumpbin -symbols"
3882         ar_default="xilib"
3883         target_os_default="win32"
3884         TMPDIR=.
3885     ;;
3886     gcov)
3887         add_cflags  -fprofile-arcs -ftest-coverage
3888         add_ldflags -fprofile-arcs -ftest-coverage
3889     ;;
3890     llvm-cov)
3891         add_cflags -fprofile-arcs -ftest-coverage
3892         add_ldflags --coverage
3893     ;;
3894     hardened)
3895         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3896         add_cflags   -fno-strict-overflow -fstack-protector-all
3897         add_ldflags  -Wl,-z,relro -Wl,-z,now
3898         add_cflags   -fPIE
3899         add_ldexeflags -fPIE -pie
3900     ;;
3901     ?*)
3902         die "Unknown toolchain $toolchain"
3903     ;;
3904 esac
3905
3906 if test -n "$cross_prefix"; then
3907     test -n "$arch" && test -n "$target_os" ||
3908         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3909     enable cross_compile
3910 fi
3911
3912 ar_default="${cross_prefix}${ar_default}"
3913 cc_default="${cross_prefix}${cc_default}"
3914 cxx_default="${cross_prefix}${cxx_default}"
3915 nm_default="${cross_prefix}${nm_default}"
3916 pkg_config_default="${cross_prefix}${pkg_config_default}"
3917 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3918     ranlib_default="${cross_prefix}${ranlib_default} -D"
3919 else
3920     ranlib_default="${cross_prefix}${ranlib_default}"
3921 fi
3922 strip_default="${cross_prefix}${strip_default}"
3923 windres_default="${cross_prefix}${windres_default}"
3924
3925 sysinclude_default="${sysroot}/usr/include"
3926
3927 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3928     target_exec target_os x86asmexe nvcc
3929 enabled cross_compile || host_cc_default=$cc
3930 set_default host_cc
3931
3932 pkg_config_fail_message=""
3933 if ! $pkg_config --version >/dev/null 2>&1; then
3934     warn "$pkg_config not found, library detection may fail."
3935     pkg_config=false
3936 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3937     pkg_config_fail_message="
3938 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3939 fi
3940
3941 if test $doxygen != $doxygen_default && \
3942   ! $doxygen --version >/dev/null 2>&1; then
3943     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3944 fi
3945
3946 exesuf() {
3947     case $1 in
3948         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3949     esac
3950 }
3951
3952 EXESUF=$(exesuf $target_os)
3953 HOSTEXESUF=$(exesuf $host_os)
3954
3955 # set temporary file name
3956 : ${TMPDIR:=$TEMPDIR}
3957 : ${TMPDIR:=$TMP}
3958 : ${TMPDIR:=/tmp}
3959
3960 if [ -n "$tempprefix" ] ; then
3961     mktemp(){
3962         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3963         echo "$tmpname"
3964         mkdir "$tmpname"
3965     }
3966 elif ! check_cmd mktemp -u XXXXXX; then
3967     # simple replacement for missing mktemp
3968     # NOT SAFE FOR GENERAL USE
3969     mktemp(){
3970         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3971         echo "$tmpname"
3972         mkdir "$tmpname"
3973     }
3974 fi
3975
3976 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3977     die "Unable to create temporary directory in $TMPDIR."
3978
3979 tmpfile(){
3980     tmp="${FFTMPDIR}/test"$2
3981     (set -C; exec > $tmp) 2> /dev/null ||
3982         die "Unable to create temporary file in $FFTMPDIR."
3983     eval $1=$tmp
3984 }
3985
3986 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3987 trap 'exit 2' INT
3988
3989 tmpfile TMPASM .asm
3990 tmpfile TMPC   .c
3991 tmpfile TMPCPP .cpp
3992 tmpfile TMPE   $EXESUF
3993 tmpfile TMPH   .h
3994 tmpfile TMPM   .m
3995 tmpfile TMPO   .o
3996 tmpfile TMPS   .S
3997 tmpfile TMPSH  .sh
3998 tmpfile TMPV   .ver
3999
4000 unset -f mktemp
4001
4002 chmod +x $TMPE
4003
4004 # make sure we can execute files in $TMPDIR
4005 cat > $TMPSH 2>> $logfile <<EOF
4006 #! /bin/sh
4007 EOF
4008 chmod +x $TMPSH >> $logfile 2>&1
4009 if ! $TMPSH >> $logfile 2>&1; then
4010     cat <<EOF
4011 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4012 variable to another directory and make sure that it is not mounted noexec.
4013 EOF
4014     die "Sanity test failed."
4015 fi
4016
4017 armasm_flags(){
4018     for flag; do
4019         case $flag in
4020             # Filter out MSVC cl.exe options from cflags that shouldn't
4021             # be passed to gas-preprocessor
4022             -M[TD]*)                                            ;;
4023             *)                  echo $flag                      ;;
4024         esac
4025    done
4026 }
4027
4028 cparser_flags(){
4029     for flag; do
4030         case $flag in
4031             -Wno-switch)             echo -Wno-switch-enum ;;
4032             -Wno-format-zero-length) ;;
4033             -Wdisabled-optimization) ;;
4034             -Wno-pointer-sign)       echo -Wno-other ;;
4035             *)                       echo $flag ;;
4036         esac
4037     done
4038 }
4039
4040 msvc_common_flags(){
4041     for flag; do
4042         case $flag in
4043             # In addition to specifying certain flags under the compiler
4044             # specific filters, they must be specified here as well or else the
4045             # generic catch all at the bottom will print the original flag.
4046             -Wall)                ;;
4047             -Wextra)              ;;
4048             -std=c99)             ;;
4049             # Common flags
4050             -fomit-frame-pointer) ;;
4051             -g)                   echo -Z7 ;;
4052             -fno-math-errno)      ;;
4053             -fno-common)          ;;
4054             -fno-signed-zeros)    ;;
4055             -fPIC)                ;;
4056             -mthumb)              ;;
4057             -march=*)             ;;
4058             -lz)                  echo zlib.lib ;;
4059             -lx264)               echo libx264.lib ;;
4060             -lstdc++)             ;;
4061             -l*)                  echo ${flag#-l}.lib ;;
4062             -LARGEADDRESSAWARE)   echo $flag ;;
4063             -L*)                  echo -libpath:${flag#-L} ;;
4064             *)                    echo $flag ;;
4065         esac
4066     done
4067 }
4068
4069 msvc_flags(){
4070     msvc_common_flags "$@"
4071     for flag; do
4072         case $flag in
4073             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4074                                        -wd4554 ;;
4075             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4076                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4077                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4078                                        -wd4307 \
4079                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4080         esac
4081     done
4082 }
4083
4084 icl_flags(){
4085     msvc_common_flags "$@"
4086     for flag; do
4087         case $flag in
4088             # Despite what Intel's documentation says -Wall, which is supported
4089             # on Windows, does enable remarks so disable them here.
4090             -Wall)                echo $flag -Qdiag-disable:remark ;;
4091             -std=c99)             echo -Qstd=c99 ;;
4092             -flto)                echo -ipo ;;
4093         esac
4094     done
4095 }
4096
4097 icc_flags(){
4098     for flag; do
4099         case $flag in
4100             -flto)                echo -ipo ;;
4101             *)                    echo $flag ;;
4102         esac
4103     done
4104 }
4105
4106 suncc_flags(){
4107     for flag; do
4108         case $flag in
4109             -march=*|-mcpu=*)
4110                 case "${flag#*=}" in
4111                     native)                   echo -xtarget=native       ;;
4112                     v9|niagara)               echo -xarch=sparc          ;;
4113                     ultrasparc)               echo -xarch=sparcvis       ;;
4114                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4115                     i586|pentium)             echo -xchip=pentium        ;;
4116                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4117                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4118                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4119                     pentium4*)          echo -xtarget=pentium4           ;;
4120                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4121                     *-sse3)             echo -xarch=sse3                 ;;
4122                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4123                     bonnell)                   echo -xarch=ssse3         ;;
4124                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4125                     westmere)                  echo -xtarget=westmere    ;;
4126                     silvermont)                echo -xarch=sse4_2        ;;
4127                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4128                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4129                                                echo -xarch=avx           ;;
4130                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4131                     btver1)                    echo -xarch=amdsse4a      ;;
4132                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4133                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4134                     k8|opteron|athlon64|athlon-fx)
4135                                                echo -xarch=sse2a         ;;
4136                     athlon*)                   echo -xarch=pentium_proa  ;;
4137                 esac
4138                 ;;
4139             -std=c99)             echo -xc99              ;;
4140             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4141             -fPIC)                echo -KPIC -xcode=pic32 ;;
4142             -W*,*)                echo $flag              ;;
4143             -f*-*|-W*|-mimpure-text)                      ;;
4144             -shared)              echo -G                 ;;
4145             *)                    echo $flag              ;;
4146         esac
4147     done
4148 }
4149
4150 probe_cc(){
4151     pfx=$1
4152     _cc=$2
4153     first=$3
4154
4155     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4156     unset _ld_o _ldflags _ld_lib _ld_path
4157     unset _depflags _DEPCMD _DEPFLAGS
4158     _flags_filter=echo
4159
4160     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4161         true # no-op to avoid reading stdin in following checks
4162     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4163         _type=llvm_gcc
4164         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4165         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4166         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4167         _cflags_speed='-O3'
4168         _cflags_size='-Os'
4169     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4170         _type=gcc
4171         gcc_version=$($_cc --version | head -n1)
4172         gcc_basever=$($_cc -dumpversion)
4173         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4174         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4175         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4176         case $gcc_basever in
4177             2) ;;
4178             2.*) ;;
4179             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4180         esac
4181         if [ "$first" = true ]; then
4182             case $gcc_basever in
4183                 4.2*)
4184                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4185             esac
4186         fi
4187         _cflags_speed='-O3'
4188         _cflags_size='-Os'
4189     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4190         _type=icc
4191         _ident=$($_cc --version | head -n1)
4192         _depflags='-MMD'
4193         _cflags_speed='-O3'
4194         _cflags_size='-Os'
4195         _cflags_noopt='-O1'
4196         _flags_filter=icc_flags
4197     elif $_cc -v 2>&1 | grep -q xlc; then
4198         _type=xlc
4199         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4200         _cflags_speed='-O5'
4201         _cflags_size='-O5 -qcompact'
4202     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4203         test -d "$sysroot" || die "No valid sysroot specified."
4204         _type=armcc
4205         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4206         armcc_conf="$PWD/armcc.conf"
4207         $_cc --arm_linux_configure                 \
4208              --arm_linux_config_file="$armcc_conf" \
4209              --configure_sysroot="$sysroot"        \
4210              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4211              die "Error creating armcc configuration file."
4212         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4213         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4214         as_default="${cross_prefix}gcc"
4215         _depflags='-MMD'
4216         _cflags_speed='-O3'
4217         _cflags_size='-Os'
4218     elif $_cc -v 2>&1 | grep -q clang; then
4219         _type=clang
4220         _ident=$($_cc --version 2>/dev/null | head -n1)
4221         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4222         _cflags_speed='-O3'
4223         _cflags_size='-Oz'
4224     elif $_cc -V 2>&1 | grep -q Sun; then
4225         _type=suncc
4226         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4227         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4228         _DEPFLAGS='-xM1 -xc99'
4229         _ldflags='-std=c99'
4230         _cflags_speed='-O5'
4231         _cflags_size='-O5 -xspace'
4232         _flags_filter=suncc_flags
4233     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4234         _type=pathscale
4235         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4236         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4237         _cflags_speed='-O2'
4238         _cflags_size='-Os'
4239         _flags_filter='filter_out -Wdisabled-optimization'
4240     elif $_cc -v 2>&1 | grep -q Open64; then
4241         _type=open64
4242         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4243         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4244         _cflags_speed='-O2'
4245         _cflags_size='-Os'
4246         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4247     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4248         _type=armasm
4249         _ident=$($_cc | head -n1)
4250         # 4509: "This form of conditional instruction is deprecated"
4251         _flags="-nologo -ignore 4509"
4252         _flags_filter=armasm_flags
4253     elif $_cc 2>&1 | grep -q Intel; then
4254         _type=icl
4255         _ident=$($_cc 2>&1 | head -n1)
4256         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4257         # Not only is O3 broken on 13.x+ but it is slower on all previous
4258         # versions (tested) as well.
4259         _cflags_speed="-O2"
4260         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4261         if $_cc 2>&1 | grep -q Linker; then
4262             _ld_o='-out:$@'
4263         else
4264             _ld_o='-Fe$@'
4265         fi
4266         _cc_o='-Fo$@'
4267         _cc_e='-P'
4268         _flags_filter=icl_flags
4269         _ld_lib='lib%.a'
4270         _ld_path='-libpath:'
4271         # -Qdiag-error to make icl error when seeing certain unknown arguments
4272         _flags='-nologo -Qdiag-error:4044,10157'
4273         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4274         # with MSVC which enables it by default.
4275         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4276         disable stripping
4277     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4278         # lld can emulate multiple different linkers; in ms link.exe mode,
4279         # the -? parameter gives the help output which contains an identifyable
4280         # string, while it gives an error in other modes.
4281         _type=lld-link
4282         # The link.exe mode doesn't have a switch for getting the version,
4283         # but we can force it back to gnu mode and get the version from there.
4284         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4285         _ld_o='-out:$@'
4286         _flags_filter=msvc_flags
4287         _ld_lib='lib%.a'
4288         _ld_path='-libpath:'
4289     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4290         _type=msvc
4291         _ident=$($_cc 2>&1 | head -n1)
4292         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4293         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4294         _cflags_speed="-O2"
4295         _cflags_size="-O1"
4296         _cflags_noopt="-O1"
4297         if $_cc -nologo- 2>&1 | grep -q Linker; then
4298             _ld_o='-out:$@'
4299         else
4300             _ld_o='-Fe$@'
4301         fi
4302         _cc_o='-Fo$@'
4303         _cc_e='-P -Fi$@'
4304         _flags_filter=msvc_flags
4305         _ld_lib='lib%.a'
4306         _ld_path='-libpath:'
4307         _flags='-nologo'
4308         disable stripping
4309     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4310         _type=cparser
4311         _ident=$($_cc --version | head -n1)
4312         _depflags='-MMD'
4313         _cflags_speed='-O4'
4314         _cflags_size='-O2'
4315         _flags_filter=cparser_flags
4316     fi
4317
4318     eval ${pfx}_type=\$_type
4319     eval ${pfx}_ident=\$_ident
4320 }
4321
4322 set_ccvars(){
4323     eval ${1}_C=\${_cc_c-\${${1}_C}}
4324     eval ${1}_E=\${_cc_e-\${${1}_E}}
4325     eval ${1}_O=\${_cc_o-\${${1}_O}}
4326
4327     if [ -n "$_depflags" ]; then
4328         eval ${1}_DEPFLAGS=\$_depflags
4329     else
4330         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4331         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4332         eval DEP${1}FLAGS=\$_flags
4333     fi
4334 }
4335
4336 probe_cc cc "$cc" "true"
4337 cflags_filter=$_flags_filter
4338 cflags_speed=$_cflags_speed
4339 cflags_size=$_cflags_size
4340 cflags_noopt=$_cflags_noopt
4341 add_cflags $_flags $_cflags
4342 cc_ldflags=$_ldflags
4343 set_ccvars CC
4344 set_ccvars CXX
4345
4346 probe_cc hostcc "$host_cc"
4347 host_cflags_filter=$_flags_filter
4348 host_cflags_speed=$_cflags_speed
4349 add_host_cflags  $_flags $_cflags
4350 set_ccvars HOSTCC
4351
4352 test -n "$cc_type" && enable $cc_type ||
4353     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4354
4355 : ${as_default:=$cc}
4356 : ${objcc_default:=$cc}
4357 : ${dep_cc_default:=$cc}
4358 : ${ld_default:=$cc}
4359 : ${host_ld_default:=$host_cc}
4360 set_default ar as objcc dep_cc ld ln_s host_ld windres
4361
4362 probe_cc as "$as"
4363 asflags_filter=$_flags_filter
4364 add_asflags $_flags $_cflags
4365 set_ccvars AS
4366
4367 probe_cc objcc "$objcc"
4368 objcflags_filter=$_flags_filter
4369 add_objcflags $_flags $_cflags
4370 set_ccvars OBJC
4371
4372 probe_cc ld "$ld"
4373 ldflags_filter=$_flags_filter
4374 add_ldflags $_flags $_ldflags
4375 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4376 LD_O=${_ld_o-$LD_O}
4377 LD_LIB=${_ld_lib-$LD_LIB}
4378 LD_PATH=${_ld_path-$LD_PATH}
4379
4380 probe_cc hostld "$host_ld"
4381 host_ldflags_filter=$_flags_filter
4382 add_host_ldflags $_flags $_ldflags
4383 HOSTLD_O=${_ld_o-$HOSTLD_O}
4384
4385 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4386     probe_cc depcc "$dep_cc"
4387     CCDEP=${_DEPCMD:-$DEPCMD}
4388     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4389     DEPCCFLAGS=$_flags
4390 fi
4391
4392 if $ar 2>&1 | grep -q Microsoft; then
4393     arflags="-nologo"
4394     ar_o='-out:$@'
4395 elif $ar 2>&1 | grep -q "\[D\] "; then
4396     arflags="rcD"
4397     ar_o='$@'
4398 else
4399     arflags="rc"
4400     ar_o='$@'
4401 fi
4402
4403 add_cflags $extra_cflags
4404 add_cxxflags $extra_cxxflags
4405 add_objcflags $extra_objcflags
4406 add_asflags $extra_cflags
4407
4408 if test -n "$sysroot"; then
4409     case "$cc_type" in
4410         gcc|llvm_gcc|clang)
4411             add_cppflags --sysroot="$sysroot"
4412             add_ldflags --sysroot="$sysroot"
4413         ;;
4414     esac
4415 fi
4416
4417 if test "$cpu" = host; then
4418     enabled cross_compile &&
4419         die "--cpu=host makes no sense when cross-compiling."
4420
4421     case "$cc_type" in
4422         gcc|llvm_gcc)
4423             check_native(){
4424                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4425                 sed -n "/cc1.*$1=/{
4426                             s/.*$1=\\([^ ]*\\).*/\\1/
4427                             p
4428                             q
4429                         }" $TMPE
4430             }
4431             cpu=$(check_native -march || check_native -mcpu)
4432         ;;
4433         clang)
4434             check_native(){
4435                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4436                 sed -n "/cc1.*-target-cpu /{
4437                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4438                             p
4439                             q
4440                         }" $TMPE
4441             }
4442             cpu=$(check_native -march)
4443         ;;
4444     esac
4445
4446     test "${cpu:-host}" = host &&
4447         die "--cpu=host not supported with compiler $cc"
4448 fi
4449
4450 # Deal with common $arch aliases
4451 case "$arch" in
4452     aarch64|arm64)
4453         arch="aarch64"
4454     ;;
4455     arm*|iPad*|iPhone*)
4456         arch="arm"
4457     ;;
4458     mips*|IP*)
4459         case "$arch" in
4460         *el)
4461             add_cppflags -EL
4462             add_ldflags -EL
4463         ;;
4464         *eb)
4465             add_cppflags -EB
4466             add_ldflags -EB
4467         ;;
4468         esac
4469         arch="mips"
4470     ;;
4471     parisc*|hppa*)
4472         arch="parisc"
4473     ;;
4474     "Power Macintosh"|ppc*|powerpc*)
4475         arch="ppc"
4476     ;;
4477     s390|s390x)
4478         arch="s390"
4479     ;;
4480     sh4|sh)
4481         arch="sh4"
4482     ;;
4483     sun4*|sparc*)
4484         arch="sparc"
4485     ;;
4486     tilegx|tile-gx)
4487         arch="tilegx"
4488     ;;
4489     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4490         arch="x86"
4491     ;;
4492 esac
4493
4494 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4495 enable $arch
4496
4497 # Add processor-specific flags
4498 if enabled aarch64; then
4499
4500     case $cpu in
4501         armv*)
4502             cpuflags="-march=$cpu"
4503         ;;
4504         *)
4505             cpuflags="-mcpu=$cpu"
4506         ;;
4507     esac
4508
4509 elif enabled alpha; then
4510
4511     cpuflags="-mcpu=$cpu"
4512
4513 elif enabled arm; then
4514
4515     check_arm_arch() {
4516         check_cpp_condition stddef.h \
4517             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4518             $cpuflags
4519     }
4520
4521     probe_arm_arch() {
4522         if   check_arm_arch 4;        then echo armv4
4523         elif check_arm_arch 4T;       then echo armv4t
4524         elif check_arm_arch 5;        then echo armv5
4525         elif check_arm_arch 5E;       then echo armv5e
4526         elif check_arm_arch 5T;       then echo armv5t
4527         elif check_arm_arch 5TE;      then echo armv5te
4528         elif check_arm_arch 5TEJ;     then echo armv5te
4529         elif check_arm_arch 6;        then echo armv6
4530         elif check_arm_arch 6J;       then echo armv6j
4531         elif check_arm_arch 6K;       then echo armv6k
4532         elif check_arm_arch 6Z;       then echo armv6z
4533         elif check_arm_arch 6ZK;      then echo armv6zk
4534         elif check_arm_arch 6T2;      then echo armv6t2
4535         elif check_arm_arch 7;        then echo armv7
4536         elif check_arm_arch 7A  7_A;  then echo armv7-a
4537         elif check_arm_arch 7S;       then echo armv7-a
4538         elif check_arm_arch 7R  7_R;  then echo armv7-r
4539         elif check_arm_arch 7M  7_M;  then echo armv7-m
4540         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4541         elif check_arm_arch 8A  8_A;  then echo armv8-a
4542         fi
4543     }
4544
4545     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4546
4547     case $cpu in
4548         armv*)
4549             cpuflags="-march=$cpu"
4550             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4551         ;;
4552         *)
4553             cpuflags="-mcpu=$cpu"
4554             case $cpu in
4555                 cortex-a*)                               subarch=armv7a  ;;
4556                 cortex-r*)                               subarch=armv7r  ;;
4557                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4558                 arm11*)                                  subarch=armv6   ;;
4559                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4560                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4561                 *)                             subarch=$(probe_arm_arch) ;;
4562             esac
4563         ;;
4564     esac
4565
4566     case "$subarch" in
4567         armv5t*)    enable fast_clz                ;;
4568         armv[6-8]*)
4569             enable fast_clz
4570             disabled fast_unaligned || enable fast_unaligned
4571             ;;
4572     esac
4573
4574 elif enabled avr32; then
4575
4576     case $cpu in
4577         ap7[02]0[0-2])
4578             subarch="avr32_ap"
4579             cpuflags="-mpart=$cpu"
4580         ;;
4581         ap)
4582             subarch="avr32_ap"
4583             cpuflags="-march=$cpu"
4584         ;;
4585         uc3[ab]*)
4586             subarch="avr32_uc"
4587             cpuflags="-mcpu=$cpu"
4588         ;;
4589         uc)
4590             subarch="avr32_uc"
4591             cpuflags="-march=$cpu"
4592         ;;
4593     esac
4594
4595 elif enabled bfin; then
4596
4597     cpuflags="-mcpu=$cpu"
4598
4599 elif enabled mips; then
4600
4601     cpuflags="-march=$cpu"
4602
4603     if [ "$cpu" != "generic" ]; then
4604         disable mips32r2
4605         disable mips32r5
4606         disable mips64r2
4607         disable mips32r6
4608         disable mips64r6
4609         disable loongson2
4610         disable loongson3
4611
4612         case $cpu in
4613             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4614                 enable mips32r2
4615                 disable msa
4616             ;;
4617             p5600|i6400|p6600)
4618                 disable mipsdsp
4619                 disable mipsdspr2
4620             ;;
4621             loongson*)
4622                 enable loongson2
4623                 enable loongson3
4624                 enable local_aligned
4625                 enable simd_align_16
4626                 enable fast_64bit
4627                 enable fast_clz
4628                 enable fast_cmov
4629                 enable fast_unaligned
4630                 disable aligned_stack
4631                 disable mipsfpu
4632                 disable mipsdsp
4633                 disable mipsdspr2
4634                 case $cpu in
4635                     loongson3*)
4636                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4637                     ;;
4638                     loongson2e)
4639                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4640                     ;;
4641                     loongson2f)
4642                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4643                     ;;
4644                 esac
4645             ;;
4646             *)
4647                 # Unknown CPU. Disable everything.
4648                 warn "unknown CPU. Disabling all MIPS optimizations."
4649                 disable mipsfpu
4650                 disable mipsdsp
4651                 disable mipsdspr2
4652                 disable msa
4653                 disable mmi
4654             ;;
4655         esac
4656
4657         case $cpu in
4658             24kc)
4659                 disable mipsfpu
4660                 disable mipsdsp
4661                 disable mipsdspr2
4662             ;;
4663             24kf*)
4664                 disable mipsdsp
4665                 disable mipsdspr2
4666             ;;
4667             24kec|34kc|1004kc)
4668                 disable mipsfpu
4669                 disable mipsdspr2
4670             ;;
4671             24kef*|34kf*|1004kf*)
4672                 disable mipsdspr2
4673             ;;
4674             74kc)
4675                 disable mipsfpu
4676             ;;
4677             p5600)
4678                 enable mips32r5
4679                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4680             ;;
4681             i6400)
4682                 enable mips64r6
4683                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4684             ;;
4685             p6600)
4686                 enable mips64r6
4687                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4688             ;;
4689         esac
4690     else
4691         # We do not disable anything. Is up to the user to disable the unwanted features.
4692         warn 'generic cpu selected'
4693     fi
4694
4695 elif enabled ppc; then
4696
4697     disable ldbrx
4698
4699     case $(tolower $cpu) in
4700         601|ppc601|powerpc601)
4701             cpuflags="-mcpu=601"
4702             disable altivec
4703         ;;
4704         603*|ppc603*|powerpc603*)
4705             cpuflags="-mcpu=603"
4706             disable altivec
4707         ;;
4708         604*|ppc604*|powerpc604*)
4709             cpuflags="-mcpu=604"
4710             disable altivec
4711         ;;
4712         g3|75*|ppc75*|powerpc75*)
4713             cpuflags="-mcpu=750"
4714             disable altivec
4715         ;;
4716         g4|745*|ppc745*|powerpc745*)
4717             cpuflags="-mcpu=7450"
4718             disable vsx
4719         ;;
4720         74*|ppc74*|powerpc74*)
4721             cpuflags="-mcpu=7400"
4722             disable vsx
4723         ;;
4724         g5|970|ppc970|powerpc970)
4725             cpuflags="-mcpu=970"
4726             disable vsx
4727         ;;
4728         power[3-6]*)
4729             cpuflags="-mcpu=$cpu"
4730             disable vsx
4731         ;;
4732         power[7-8]*)
4733             cpuflags="-mcpu=$cpu"
4734         ;;
4735         cell)
4736             cpuflags="-mcpu=cell"
4737             enable ldbrx
4738             disable vsx
4739         ;;
4740         e500mc)
4741             cpuflags="-mcpu=e500mc"
4742             disable altivec
4743         ;;
4744         e500v2)
4745             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4746             disable altivec
4747             disable dcbzl
4748         ;;
4749         e500)
4750             cpuflags="-mcpu=8540 -mhard-float"
4751             disable altivec
4752             disable dcbzl
4753         ;;
4754     esac
4755
4756 elif enabled sparc; then
4757
4758     case $cpu in
4759         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4760             cpuflags="-mcpu=$cpu"
4761         ;;
4762         ultrasparc*|niagara[234])
4763             cpuflags="-mcpu=$cpu"
4764         ;;
4765     esac
4766
4767 elif enabled x86; then
4768
4769     case $cpu in
4770         i[345]86|pentium)
4771             cpuflags="-march=$cpu"
4772             disable i686
4773             disable mmx
4774         ;;
4775         # targets that do NOT support nopl and conditional mov (cmov)
4776         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4777             cpuflags="-march=$cpu"
4778             disable i686
4779         ;;
4780         # targets that do support nopl and conditional mov (cmov)
4781         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4782         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4783         |amdfam10|barcelona|b[dt]ver*|znver*)
4784             cpuflags="-march=$cpu"
4785             enable i686
4786             enable fast_cmov
4787         ;;
4788         # targets that do support conditional mov but on which it's slow
4789         pentium4|pentium4m|prescott|nocona)
4790             cpuflags="-march=$cpu"
4791             enable i686
4792             disable fast_cmov
4793         ;;
4794     esac
4795
4796 fi
4797
4798 if [ "$cpu" != generic ]; then
4799     add_cflags  $cpuflags
4800     add_asflags $cpuflags
4801     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4802 fi
4803
4804 # compiler sanity check
4805 check_exec <<EOF
4806 int main(void){ return 0; }
4807 EOF
4808 if test "$?" != 0; then
4809     echo "$cc is unable to create an executable file."
4810     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4811         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4812         echo "Only do this if you know what cross compiling means."
4813     fi
4814     die "C compiler test failed."
4815 fi
4816
4817 add_cppflags -D_ISOC99_SOURCE
4818 add_cxxflags -D__STDC_CONSTANT_MACROS
4819 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4820
4821 # some compilers silently accept -std=c11, so we also need to check that the
4822 # version macro is defined properly
4823 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4824     add_cflags -std=c11 ||
4825     check_cflags -std=c99
4826
4827 check_cppflags -D_FILE_OFFSET_BITS=64
4828 check_cppflags -D_LARGEFILE_SOURCE
4829
4830 add_host_cppflags -D_ISOC99_SOURCE
4831 check_host_cflags -std=c99
4832 check_host_cflags -Wall
4833 check_host_cflags $host_cflags_speed
4834
4835 check_64bit(){
4836     arch32=$1
4837     arch64=$2
4838     expr=$3
4839     check_code cc "" "int test[2*($expr) - 1]" &&
4840         subarch=$arch64 || subarch=$arch32
4841     enable $subarch
4842 }
4843
4844 case "$arch" in
4845     aarch64|alpha|ia64)
4846         enabled shared && enable_weak pic
4847     ;;
4848     mips)
4849         check_64bit mips mips64 '_MIPS_SIM > 1'
4850         enabled shared && enable_weak pic
4851     ;;
4852     parisc)
4853         check_64bit parisc parisc64 'sizeof(void *) > 4'
4854         enabled shared && enable_weak pic
4855     ;;
4856     ppc)
4857         check_64bit ppc ppc64 'sizeof(void *) > 4'
4858         enabled shared && enable_weak pic
4859     ;;
4860     s390)
4861         check_64bit s390 s390x 'sizeof(void *) > 4'
4862         enabled shared && enable_weak pic
4863     ;;
4864     sparc)
4865         check_64bit sparc sparc64 'sizeof(void *) > 4'
4866         enabled shared && enable_weak pic
4867     ;;
4868     x86)
4869         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4870         # Treat x32 as x64 for now. Note it also needs pic if shared
4871         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4872             subarch=x86_64 && enable x86_64 && disable x86_32
4873         if enabled x86_64; then
4874             enabled shared && enable_weak pic
4875             objformat=elf64
4876         fi
4877     ;;
4878 esac
4879
4880 # OS specific
4881 case $target_os in
4882     aix)
4883         SHFLAGS=-shared
4884         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4885         enabled shared && add_ldflags -Wl,-brtl
4886         arflags='-Xany -r -c'
4887         ;;
4888     android)
4889         disable symver
4890         enable section_data_rel_ro
4891         SLIB_INSTALL_NAME='$(SLIBNAME)'
4892         SLIB_INSTALL_LINKS=
4893         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4894         ;;
4895     haiku)
4896         prefix_default="/boot/common"
4897         network_extralibs="-lnetwork"
4898         host_extralibs=
4899         ;;
4900     sunos)
4901         SHFLAGS='-shared -Wl,-h,$$(@F)'
4902         enabled x86 && append SHFLAGS -mimpure-text
4903         network_extralibs="-lsocket -lnsl"
4904         add_cppflags -D__EXTENSIONS__
4905         # When using suncc to build, the Solaris linker will mark
4906         # an executable with each instruction set encountered by
4907         # the Solaris assembler.  As our libraries contain their own
4908         # guards for processor-specific code, instead suppress
4909         # generation of the HWCAPS ELF section on Solaris x86 only.
4910         enabled_all suncc x86 &&
4911             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4912             add_ldflags -Wl,-M,mapfile
4913         nm_default='nm -P -g'
4914         version_script='-M'
4915         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4916         ;;
4917     netbsd)
4918         disable symver
4919         oss_indev_extralibs="-lossaudio"
4920         oss_outdev_extralibs="-lossaudio"
4921         enabled gcc || check_ldflags -Wl,-zmuldefs
4922         ;;
4923     openbsd|bitrig)
4924         disable symver
4925         SHFLAGS='-shared'
4926         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4927         SLIB_INSTALL_LINKS=
4928         oss_indev_extralibs="-lossaudio"
4929         oss_outdev_extralibs="-lossaudio"
4930         ;;
4931     dragonfly)
4932         disable symver
4933         ;;
4934     freebsd)
4935         ;;
4936     bsd/os)
4937         add_extralibs -lpoll -lgnugetopt
4938         strip="strip -d"
4939         ;;
4940     darwin)
4941         enabled ppc && add_asflags -force_cpusubtype_ALL
4942         install_name_dir_default='$(SHLIBDIR)'
4943         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4944         enabled x86_3