lavf/nutdec: Fix an impossible condition, regression since e0c53c34.
[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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$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   --enable-raise-major     increase major version numbers in sonames [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188
189 External library support:
190
191   Using any of the following switches will allow FFmpeg to link to the
192   corresponding external library. All the components depending on that library
193   will become enabled, if all their other dependencies are met and they are not
194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
195   libwavpack and allow the libwavpack encoder to be built, unless it is
196   specifically disabled with --disable-encoder=libwavpack.
197
198   Note that only the system libraries are auto-detected. All the other external
199   libraries must be explicitly enabled.
200
201   Also note that the following help text describes the purpose of the libraries
202   themselves, not all their features will necessarily be usable by FFmpeg.
203
204   --enable-avisynth        enable reading of AviSynth script files [no]
205   --disable-bzlib          disable bzlib [autodetect]
206   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
207   --enable-frei0r          enable frei0r video filtering [no]
208   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
209                            if openssl, librtmp or gmp is not used [no]
210   --enable-gmp             enable gmp, needed for rtmp(t)e support
211                            if openssl or librtmp is not used [no]
212   --enable-gnutls          enable gnutls, needed for https support
213                            if openssl is not used [no]
214   --disable-iconv          disable iconv [autodetect]
215   --enable-jni             enable JNI support [no]
216   --enable-ladspa          enable LADSPA audio filtering [no]
217   --enable-libass          enable libass subtitles rendering,
218                            needed for subtitles and ass filter [no]
219   --enable-libbluray       enable BluRay reading using libbluray [no]
220   --enable-libbs2b         enable bs2b DSP library [no]
221   --enable-libcaca         enable textual display using libcaca [no]
222   --enable-libcelt         enable CELT decoding via libcelt [no]
223   --enable-libcdio         enable audio CD grabbing with libcdio [no]
224   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
225                            and libraw1394 [no]
226   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
227   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
228   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
229   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
230   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
231   --enable-libgme          enable Game Music Emu via libgme [no]
232   --enable-libgsm          enable GSM de/encoding via libgsm [no]
233   --enable-libiec61883     enable iec61883 via libiec61883 [no]
234   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
235   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
236   --enable-libmodplug      enable ModPlug via libmodplug [no]
237   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
238   --enable-libnut          enable NUT (de)muxing via libnut,
239                            native (de)muxer exists [no]
240   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
241   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
242   --enable-libopencv       enable video filtering via libopencv [no]
243   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
244   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
245   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
246   --enable-libopus         enable Opus de/encoding via libopus [no]
247   --enable-libpulse        enable Pulseaudio input via libpulse [no]
248   --enable-librubberband   enable rubberband needed for rubberband filter [no]
249   --enable-librtmp         enable RTMP[E] support via librtmp [no]
250   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
251   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
252   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
253   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
254   --enable-libsoxr         enable Include libsoxr resampling [no]
255   --enable-libspeex        enable Speex de/encoding via libspeex [no]
256   --enable-libssh          enable SFTP protocol via libssh [no]
257   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
258   --enable-libtheora       enable Theora encoding via libtheora [no]
259   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
260   --enable-libv4l2         enable libv4l2/v4l-utils [no]
261   --enable-libvidstab      enable video stabilization using vid.stab [no]
262   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
263   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
264                            native implementation exists [no]
265   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
266   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
267   --enable-libwebp         enable WebP encoding via libwebp [no]
268   --enable-libx264         enable H.264 encoding via x264 [no]
269   --enable-libx265         enable HEVC encoding via x265 [no]
270   --enable-libxavs         enable AVS encoding via xavs [no]
271   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
272   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
273   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
274   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
275   --enable-libxvid         enable Xvid encoding via xvidcore,
276                            native MPEG-4/Xvid encoder exists [no]
277   --enable-libzimg         enable z.lib, needed for zscale filter [no]
278   --enable-libzmq          enable message passing via libzmq [no]
279   --enable-libzvbi         enable teletext support via libzvbi [no]
280   --disable-lzma           disable lzma [autodetect]
281   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
282   --enable-mediacodec      enable Android MediaCodec support [no]
283   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
284   --enable-openal          enable OpenAL 1.1 capture support [no]
285   --enable-opencl          enable OpenCL code
286   --enable-opengl          enable OpenGL rendering [no]
287   --enable-openssl         enable openssl, needed for https support
288                            if gnutls is not used [no]
289   --disable-schannel       disable SChannel SSP, needed for TLS support on
290                            Windows if openssl and gnutls are not used [autodetect]
291   --disable-sdl2           disable sdl2 [autodetect]
292   --disable-securetransport disable Secure Transport, needed for TLS support
293                            on OSX if openssl and gnutls are not used [autodetect]
294   --disable-xlib           disable xlib [autodetect]
295   --disable-zlib           disable zlib [autodetect]
296
297   The following libraries provide various hardware acceleration features:
298   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
299   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
300   --disable-cuvid          disable Nvidia CUVID support [autodetect]
301   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
302   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
303   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
304   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
305   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
306   --disable-nvenc          disable Nvidia video encoding code [autodetect]
307   --enable-omx             enable OpenMAX IL code [no]
308   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
309   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
310   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
311   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
312   --disable-videotoolbox   disable VideoToolbox code [autodetect]
313
314 Toolchain options:
315   --arch=ARCH              select architecture [$arch]
316   --cpu=CPU                select the minimum required CPU (affects
317                            instruction selection, may crash on older CPUs)
318   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
319   --progs-suffix=SUFFIX    program name suffix []
320   --enable-cross-compile   assume a cross-compiler is used
321   --sysroot=PATH           root of cross-build tree
322   --sysinclude=PATH        location of cross-build system headers
323   --target-os=OS           compiler targets OS [$target_os]
324   --target-exec=CMD        command to run executables on target
325   --target-path=DIR        path to view of build directory on target
326   --target-samples=DIR     path to samples directory on target
327   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
328   --toolchain=NAME         set tool defaults according to NAME
329   --nm=NM                  use nm tool NM [$nm_default]
330   --ar=AR                  use archive tool AR [$ar_default]
331   --as=AS                  use assembler AS [$as_default]
332   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
333   --strip=STRIP            use strip tool STRIP [$strip_default]
334   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
335   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
336   --cc=CC                  use C compiler CC [$cc_default]
337   --cxx=CXX                use C compiler CXX [$cxx_default]
338   --objcc=OCC              use ObjC compiler OCC [$cc_default]
339   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
340   --ld=LD                  use linker LD [$ld_default]
341   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
342   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
343   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
344   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
345   --host-cc=HOSTCC         use host C compiler HOSTCC
346   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
347   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
348   --host-ld=HOSTLD         use host linker HOSTLD
349   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
350   --host-libs=HLIBS        use libs HLIBS when linking for host
351   --host-os=OS             compiler host OS [$target_os]
352   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
353   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
354   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
355   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
356   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
357   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
358   --extra-libs=ELIBS       add ELIBS [$ELIBS]
359   --extra-version=STRING   version string suffix []
360   --optflags=OPTFLAGS      override optimization-related compiler flags
361   --build-suffix=SUFFIX    library name suffix []
362   --enable-pic             build position-independent code
363   --enable-thumb           compile for Thumb instruction set
364   --enable-lto             use link-time optimization
365   --env="ENV=override"     override the environment variables
366
367 Advanced options (experts only):
368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
369   --custom-allocator=NAME  use a supported custom allocator
370   --disable-symver         disable symbol versioning
371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
372   --disable-safe-bitstream-reader
373                            disable buffer boundary checking in bitreaders
374                            (faster, but may crash)
375   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
376
377 Optimization options (experts only):
378   --disable-asm            disable all assembly optimizations
379   --disable-altivec        disable AltiVec optimizations
380   --disable-vsx            disable VSX optimizations
381   --disable-power8         disable POWER8 optimizations
382   --disable-amd3dnow       disable 3DNow! optimizations
383   --disable-amd3dnowext    disable 3DNow! extended optimizations
384   --disable-mmx            disable MMX optimizations
385   --disable-mmxext         disable MMXEXT optimizations
386   --disable-sse            disable SSE optimizations
387   --disable-sse2           disable SSE2 optimizations
388   --disable-sse3           disable SSE3 optimizations
389   --disable-ssse3          disable SSSE3 optimizations
390   --disable-sse4           disable SSE4 optimizations
391   --disable-sse42          disable SSE4.2 optimizations
392   --disable-avx            disable AVX optimizations
393   --disable-xop            disable XOP optimizations
394   --disable-fma3           disable FMA3 optimizations
395   --disable-fma4           disable FMA4 optimizations
396   --disable-avx2           disable AVX2 optimizations
397   --disable-aesni          disable AESNI optimizations
398   --disable-armv5te        disable armv5te optimizations
399   --disable-armv6          disable armv6 optimizations
400   --disable-armv6t2        disable armv6t2 optimizations
401   --disable-vfp            disable VFP optimizations
402   --disable-neon           disable NEON optimizations
403   --disable-inline-asm     disable use of inline assembly
404   --disable-yasm           disable use of nasm/yasm assembly
405   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
406   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
407   --disable-msa            disable MSA optimizations
408   --disable-mipsfpu        disable floating point MIPS optimizations
409   --disable-mmi            disable Loongson SIMD optimizations
410   --disable-fast-unaligned consider unaligned accesses slow
411
412 Developer options (useful when working on FFmpeg itself):
413   --disable-debug          disable debugging symbols
414   --enable-debug=LEVEL     set the debug level [$debuglevel]
415   --disable-optimizations  disable compiler optimizations
416   --enable-extra-warnings  enable more compiler warnings
417   --disable-stripping      disable stripping of executables and shared libraries
418   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
419                            2 causes a slowdown at runtime.
420   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
421   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
422                            leaks and errors, using the specified valgrind binary.
423                            Cannot be combined with --target-exec
424   --enable-ftrapv          Trap arithmetic overflows
425   --samples=PATH           location of test samples for FATE, if not set use
426                            \$FATE_SAMPLES at make invocation time.
427   --enable-neon-clobber-test check NEON registers for clobbering (should be
428                            used only for debugging purposes)
429   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
430                            should be used only for debugging purposes)
431   --enable-random          randomly enable/disable components
432   --disable-random
433   --enable-random=LIST     randomly enable/disable specific components or
434   --disable-random=LIST    component groups. LIST is a comma-separated list
435                            of NAME[:PROB] entries where NAME is a component
436                            (group) and PROB the probability associated with
437                            NAME (default 0.5).
438   --random-seed=VALUE      seed value for --enable/disable-random
439   --disable-valgrind-backtrace do not print a backtrace under Valgrind
440                            (only applies to --disable-optimizations builds)
441   --enable-osfuzz          Enable building fuzzer tool
442   --libfuzzer=PATH         path to libfuzzer
443
444 NOTE: Object files are built at the place where configure is launched.
445 EOF
446   exit 0
447 }
448
449 quotes='""'
450 if test -t 1 && which tput >/dev/null 2>&1; then
451     ncolors=$(tput colors)
452     if test -n "$ncolors" && test $ncolors -ge 8; then
453         bold_color=$(tput bold)
454         warn_color=$(tput setaf 3)
455         error_color=$(tput setaf 1)
456         reset_color=$(tput sgr0)
457     fi
458     # 72 used instead of 80 since that's the default of pr
459     ncols=$(tput cols)
460 fi
461 : ${ncols:=72}
462
463 log(){
464     echo "$@" >> $logfile
465 }
466
467 log_file(){
468     log BEGIN $1
469     pr -n -t $1 >> $logfile
470     log END $1
471 }
472
473 warn(){
474     log "WARNING: $*"
475     WARNINGS="${WARNINGS}WARNING: $*\n"
476 }
477
478 die(){
479     log "$@"
480     echo "$error_color$bold_color$@$reset_color"
481     cat <<EOF
482
483 If you think configure made a mistake, make sure you are using the latest
484 version from Git.  If the latest version fails, report the problem to the
485 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
486 EOF
487     if disabled logging; then
488         cat <<EOF
489 Rerun configure with logging enabled (do not use --disable-logging), and
490 include the log this produces with your report.
491 EOF
492     else
493         cat <<EOF
494 Include the log file "$logfile" produced by configure as this will help
495 solve the problem.
496 EOF
497     fi
498     exit 1
499 }
500
501 # Avoid locale weirdness, besides we really just want to translate ASCII.
502 toupper(){
503     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
504 }
505
506 tolower(){
507     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
508 }
509
510 c_escape(){
511     echo "$*" | sed 's/["\\]/\\\0/g'
512 }
513
514 sh_quote(){
515     v=$(echo "$1" | sed "s/'/'\\\\''/g")
516     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
517     echo "$v"
518 }
519
520 cleanws(){
521     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
522 }
523
524 filter(){
525     pat=$1
526     shift
527     for v; do
528         eval "case $v in $pat) printf '%s ' $v ;; esac"
529     done
530 }
531
532 filter_out(){
533     pat=$1
534     shift
535     for v; do
536         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
537     done
538 }
539
540 map(){
541     m=$1
542     shift
543     for v; do eval $m; done
544 }
545
546 add_suffix(){
547     suffix=$1
548     shift
549     for v; do echo ${v}${suffix}; done
550 }
551
552 set_all(){
553     value=$1
554     shift
555     for var in $*; do
556         eval $var=$value
557     done
558 }
559
560 set_weak(){
561     value=$1
562     shift
563     for var; do
564         eval : \${$var:=$value}
565     done
566 }
567
568 sanitize_var_name(){
569     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
570 }
571
572 set_safe(){
573     var=$1
574     shift
575     eval $(sanitize_var_name "$var")='$*'
576 }
577
578 get_safe(){
579     eval echo \$$(sanitize_var_name "$1")
580 }
581
582 pushvar(){
583     for pvar in $*; do
584         eval level=\${${pvar}_level:=0}
585         eval ${pvar}_${level}="\$$pvar"
586         eval ${pvar}_level=$(($level+1))
587     done
588 }
589
590 popvar(){
591     for pvar in $*; do
592         eval level=\${${pvar}_level:-0}
593         test $level = 0 && continue
594         eval level=$(($level-1))
595         eval $pvar="\${${pvar}_${level}}"
596         eval ${pvar}_level=$level
597         eval unset ${pvar}_${level}
598     done
599 }
600
601 request(){
602     for var in $*; do
603         eval ${var}_requested=yes
604         eval $var=
605     done
606 }
607
608 enable(){
609     set_all yes $*
610 }
611
612 disable(){
613     set_all no $*
614 }
615
616 enable_weak(){
617     set_weak yes $*
618 }
619
620 disable_weak(){
621     set_weak no $*
622 }
623
624 enable_safe(){
625     for var; do
626         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
627     done
628 }
629
630 disable_safe(){
631     for var; do
632         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
633     done
634 }
635
636 do_enable_deep(){
637     for var; do
638         enabled $var && continue
639         eval sel="\$${var}_select"
640         eval sgs="\$${var}_suggest"
641         pushvar var sgs
642         enable_deep $sel
643         popvar sgs
644         enable_deep_weak $sgs
645         popvar var
646     done
647 }
648
649 enable_deep(){
650     do_enable_deep $*
651     enable $*
652 }
653
654 enable_deep_weak(){
655     for var; do
656         disabled $var && continue
657         pushvar var
658         do_enable_deep $var
659         popvar var
660         enable_weak $var
661     done
662 }
663
664 requested(){
665     test "${1#!}" = "$1" && op='=' || op=!=
666     eval test "x\$${1#!}_requested" $op "xyes"
667 }
668
669 enabled(){
670     test "${1#!}" = "$1" && op='=' || op=!=
671     eval test "x\$${1#!}" $op "xyes"
672 }
673
674 disabled(){
675     test "${1#!}" = "$1" && op='=' || op=!=
676     eval test "x\$${1#!}" $op "xno"
677 }
678
679 enabled_all(){
680     for opt; do
681         enabled $opt || return 1
682     done
683 }
684
685 disabled_all(){
686     for opt; do
687         disabled $opt || return 1
688     done
689 }
690
691 enabled_any(){
692     for opt; do
693         enabled $opt && return 0
694     done
695 }
696
697 disabled_any(){
698     for opt; do
699         disabled $opt && return 0
700     done
701     return 1
702 }
703
704 set_default(){
705     for opt; do
706         eval : \${$opt:=\$${opt}_default}
707     done
708 }
709
710 is_in(){
711     value=$1
712     shift
713     for var in $*; do
714         [ $var = $value ] && return 0
715     done
716     return 1
717 }
718
719 do_check_deps(){
720     for cfg; do
721         cfg="${cfg#!}"
722         enabled ${cfg}_checking && die "Circular dependency for $cfg."
723         disabled ${cfg}_checking && continue
724         enable ${cfg}_checking
725         append allopts $cfg
726
727         eval dep_all="\$${cfg}_deps"
728         eval dep_any="\$${cfg}_deps_any"
729         eval dep_sel="\$${cfg}_select"
730         eval dep_sgs="\$${cfg}_suggest"
731         eval dep_ifa="\$${cfg}_if"
732         eval dep_ifn="\$${cfg}_if_any"
733
734         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
735         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
736         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
737
738         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
739         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
740         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
741         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
742         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
743
744         if enabled $cfg; then
745             enable_deep $dep_sel
746             enable_deep_weak $dep_sgs
747         fi
748
749         disable ${cfg}_checking
750     done
751 }
752
753 check_deps(){
754     unset allopts
755
756     do_check_deps "$@"
757
758     for cfg in $allopts; do
759         enabled $cfg || continue
760         eval dep_extralibs="\$${cfg}_extralibs"
761         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
762     done
763 }
764
765 print_config(){
766     pfx=$1
767     files=$2
768     shift 2
769     map 'eval echo "$v \${$v:-no}"' "$@" |
770     awk "BEGIN { split(\"$files\", files) }
771         {
772             c = \"$pfx\" toupper(\$1);
773             v = \$2;
774             sub(/yes/, 1, v);
775             sub(/no/,  0, v);
776             for (f in files) {
777                 file = files[f];
778                 if (file ~ /\\.h\$/) {
779                     printf(\"#define %s %d\\n\", c, v) >>file;
780                 } else if (file ~ /\\.asm\$/) {
781                     printf(\"%%define %s %d\\n\", c, v) >>file;
782                 } else if (file ~ /\\.mak\$/) {
783                     n = -v ? \"\" : \"!\";
784                     printf(\"%s%s=yes\\n\", n, c) >>file;
785                 } else if (file ~ /\\.texi\$/) {
786                     pre = -v ? \"\" : \"@c \";
787                     yesno = \$2;
788                     c2 = tolower(c);
789                     gsub(/_/, \"-\", c2);
790                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
791                 }
792             }
793         }"
794 }
795
796 print_enabled(){
797     suf=$1
798     shift
799     for v; do
800         enabled $v && printf "%s\n" ${v%$suf}
801     done
802 }
803
804 append(){
805     var=$1
806     shift
807     eval "$var=\"\$$var $*\""
808 }
809
810 prepend(){
811     var=$1
812     shift
813     eval "$var=\"$* \$$var\""
814 }
815
816 unique(){
817     var=$1
818     uniq_list=""
819     for tok in $(eval echo \$$var); do
820         uniq_list="$(filter_out $tok $uniq_list) $tok"
821     done
822     eval "$var=\"${uniq_list}\""
823 }
824
825 add_cppflags(){
826     append CPPFLAGS "$@"
827 }
828
829 add_cflags(){
830     append CFLAGS $($cflags_filter "$@")
831 }
832
833 add_cflags_headers(){
834     append CFLAGS_HEADERS $($cflags_filter "$@")
835 }
836
837 add_cxxflags(){
838     append CXXFLAGS $($cflags_filter "$@")
839 }
840
841 add_asflags(){
842     append ASFLAGS $($asflags_filter "$@")
843 }
844
845 add_objcflags(){
846     append OBJCFLAGS $($objcflags_filter "$@")
847 }
848
849 add_ldflags(){
850     append LDFLAGS $($ldflags_filter "$@")
851 }
852
853 add_ldexeflags(){
854     append LDEXEFLAGS $($ldflags_filter "$@")
855 }
856
857 add_ldlibflags(){
858     append LDLIBFLAGS $($ldflags_filter "$@")
859 }
860
861 add_stripflags(){
862     append ASMSTRIPFLAGS "$@"
863 }
864
865 add_extralibs(){
866     prepend extralibs $($ldflags_filter "$@")
867 }
868
869 add_host_cppflags(){
870     append host_cppflags "$@"
871 }
872
873 add_host_cflags(){
874     append host_cflags $($host_cflags_filter "$@")
875 }
876
877 add_host_ldflags(){
878     append host_ldflags $($host_ldflags_filter "$@")
879 }
880
881 add_compat(){
882     append compat_objs $1
883     shift
884     map 'add_cppflags -D$v' "$@"
885 }
886
887 check_cmd(){
888     log "$@"
889     "$@" >> $logfile 2>&1
890 }
891
892 check_stat(){
893     log check_stat "$@"
894     stat "$1" >> $logfile 2>&1
895 }
896
897 cc_o(){
898     eval printf '%s\\n' $CC_O
899 }
900
901 cc_e(){
902     eval printf '%s\\n' $CC_E
903 }
904
905 check_cc(){
906     log check_cc "$@"
907     cat > $TMPC
908     log_file $TMPC
909     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
910 }
911
912 check_cxx(){
913     log check_cxx "$@"
914     cat > $TMPCPP
915     log_file $TMPCPP
916     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
917 }
918
919 check_objcc(){
920     log check_objcc "$@"
921     cat > $TMPM
922     log_file $TMPM
923     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
924 }
925
926 check_cpp(){
927     log check_cpp "$@"
928     cat > $TMPC
929     log_file $TMPC
930     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
931 }
932
933 as_o(){
934     eval printf '%s\\n' $AS_O
935 }
936
937 check_as(){
938     log check_as "$@"
939     cat > $TMPS
940     log_file $TMPS
941     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
942 }
943
944 check_inline_asm(){
945     log check_inline_asm "$@"
946     name="$1"
947     code="$2"
948     shift 2
949     disable $name
950     check_cc "$@" <<EOF && enable $name
951 void foo(void){ __asm__ volatile($code); }
952 EOF
953 }
954
955 check_inline_asm_flags(){
956     log check_inline_asm_flags "$@"
957     name="$1"
958     code="$2"
959     flags=''
960     shift 2
961     while [ "$1" != "" ]; do
962       append flags $1
963       shift
964     done;
965     disable $name
966     cat > $TMPC <<EOF
967 void foo(void){ __asm__ volatile($code); }
968 EOF
969     log_file $TMPC
970     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
971     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
972 }
973
974 check_insn(){
975     log check_insn "$@"
976     check_inline_asm ${1}_inline "\"$2\""
977     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
978 }
979
980 check_yasm(){
981     log check_yasm "$@"
982     echo "$1" > $TMPS
983     log_file $TMPS
984     shift 1
985     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
986 }
987
988 ld_o(){
989     eval printf '%s\\n' $LD_O
990 }
991
992 check_ld(){
993     log check_ld "$@"
994     type=$1
995     shift 1
996     flags=$(filter_out '-l*|*.so' $@)
997     libs=$(filter '-l*|*.so' $@)
998     check_$type $($cflags_filter $flags) || return
999     flags=$($ldflags_filter $flags)
1000     libs=$($ldflags_filter $libs)
1001     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1002 }
1003
1004 print_include(){
1005     hdr=$1
1006     test "${hdr%.h}" = "${hdr}" &&
1007         echo "#include $hdr"    ||
1008         echo "#include <$hdr>"
1009 }
1010
1011 check_code(){
1012     log check_code "$@"
1013     check=$1
1014     headers=$2
1015     code=$3
1016     shift 3
1017     {
1018         for hdr in $headers; do
1019             print_include $hdr
1020         done
1021         echo "int main(void) { $code; return 0; }"
1022     } | check_$check "$@"
1023 }
1024
1025 check_cppflags(){
1026     log check_cppflags "$@"
1027     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1028 int x;
1029 EOF
1030 }
1031
1032 test_cflags(){
1033     log test_cflags "$@"
1034     set -- $($cflags_filter "$@")
1035     check_cc "$@" <<EOF
1036 int x;
1037 EOF
1038 }
1039
1040 check_cflags(){
1041     log check_cflags "$@"
1042     test_cflags "$@" && add_cflags "$@"
1043 }
1044
1045 check_cxxflags(){
1046     log check_cxxflags "$@"
1047     set -- $($cflags_filter "$@")
1048     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1049 int x;
1050 EOF
1051 }
1052
1053 test_objcflags(){
1054     log test_objcflags "$@"
1055     set -- $($objcflags_filter "$@")
1056     check_objcc "$@" <<EOF
1057 int x;
1058 EOF
1059 }
1060
1061 check_objcflags(){
1062     log check_objcflags "$@"
1063     test_objcflags "$@" && add_objcflags "$@"
1064 }
1065
1066 test_ldflags(){
1067     log test_ldflags "$@"
1068     check_ld "cc" "$@" <<EOF
1069 int main(void){ return 0; }
1070 EOF
1071 }
1072
1073 check_ldflags(){
1074     log check_ldflags "$@"
1075     test_ldflags "$@" && add_ldflags "$@"
1076 }
1077
1078 test_stripflags(){
1079     log test_stripflags "$@"
1080     # call check_cc to get a fresh TMPO
1081     check_cc <<EOF
1082 int main(void) { return 0; }
1083 EOF
1084     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1085 }
1086
1087 check_stripflags(){
1088     log check_stripflags "$@"
1089     test_stripflags "$@" && add_stripflags "$@"
1090 }
1091
1092 check_header(){
1093     log check_header "$@"
1094     header=$1
1095     shift
1096     disable_safe $header
1097     check_cpp "$@" <<EOF && enable_safe $header
1098 #include <$header>
1099 int x;
1100 EOF
1101 }
1102
1103 check_header_objcc(){
1104     log check_header_objcc "$@"
1105     rm -f -- "$TMPO"
1106     header=$1
1107     shift
1108     disable_safe $header
1109     {
1110        echo "#include <$header>"
1111        echo "int main(void) { return 0; }"
1112     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1113 }
1114
1115 check_func(){
1116     log check_func "$@"
1117     func=$1
1118     shift
1119     disable $func
1120     check_ld "cc" "$@" <<EOF && enable $func
1121 extern int $func();
1122 int main(void){ $func(); }
1123 EOF
1124 }
1125
1126 check_complexfunc(){
1127     log check_complexfunc "$@"
1128     func=$1
1129     narg=$2
1130     shift 2
1131     test $narg = 2 && args="f, g" || args="f * I"
1132     disable $func
1133     check_ld "cc" "$@" <<EOF && enable $func
1134 #include <complex.h>
1135 #include <math.h>
1136 float foo(complex float f, complex float g) { return $func($args); }
1137 int main(void){ return (int) foo; }
1138 EOF
1139 }
1140
1141 check_mathfunc(){
1142     log check_mathfunc "$@"
1143     func=$1
1144     narg=$2
1145     shift 2
1146     test $narg = 2 && args="f, g" || args="f"
1147     disable $func
1148     check_ld "cc" "$@" <<EOF && enable $func
1149 #include <math.h>
1150 float foo(float f, float g) { return $func($args); }
1151 int main(void){ return (int) foo; }
1152 EOF
1153 }
1154
1155 check_func_headers(){
1156     log check_func_headers "$@"
1157     headers=$1
1158     funcs=$2
1159     shift 2
1160     {
1161         for hdr in $headers; do
1162             print_include $hdr
1163         done
1164         echo "#include <stdint.h>"
1165         for func in $funcs; do
1166             echo "long check_$func(void) { return (long) $func; }"
1167         done
1168         echo "int main(void) { int ret = 0;"
1169         # LTO could optimize out the test functions without this
1170         for func in $funcs; do
1171             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1172         done
1173         echo "return ret; }"
1174     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1175 }
1176
1177 check_class_headers_cpp(){
1178     log check_class_headers_cpp "$@"
1179     headers=$1
1180     classes=$2
1181     shift 2
1182     {
1183         for hdr in $headers; do
1184             echo "#include <$hdr>"
1185         done
1186         echo "int main(void) { "
1187         i=1
1188         for class in $classes; do
1189             echo "$class obj$i;"
1190             i=$(expr $i + 1)
1191         done
1192         echo "return 0; }"
1193     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1194 }
1195
1196 check_cpp_condition(){
1197     log check_cpp_condition "$@"
1198     header=$1
1199     condition=$2
1200     shift 2
1201     check_cpp "$@" <<EOF
1202 #include <$header>
1203 #if !($condition)
1204 #error "unsatisfied condition: $condition"
1205 #endif
1206 EOF
1207 }
1208
1209 test_cflags_cc(){
1210     log test_cflags_cc "$@"
1211     flags=$1
1212     header=$2
1213     condition=$3
1214     shift 3
1215     set -- $($cflags_filter "$flags")
1216     check_cc "$@" <<EOF
1217 #include <$header>
1218 #if !($condition)
1219 #error "unsatisfied condition: $condition"
1220 #endif
1221 EOF
1222 }
1223
1224 check_lib(){
1225     log check_lib "$@"
1226     name="$1"
1227     headers="$2"
1228     funcs="$3"
1229     shift 3
1230     disable $name
1231     check_func_headers "$headers" "$funcs" "$@" &&
1232         enable $name && add_extralibs "$@"
1233 }
1234
1235 check_lib_cpp(){
1236     log check_lib_cpp "$@"
1237     headers="$1"
1238     classes="$2"
1239     shift 2
1240     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1241 }
1242
1243 check_pkg_config(){
1244     log check_pkg_config "$@"
1245     pkg_version="$1"
1246     pkg="${1%% *}"
1247     headers="$2"
1248     funcs="$3"
1249     shift 3
1250     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1251     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1252     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1253     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1254         set_safe "${pkg}_cflags"    $pkg_cflags &&
1255         set_safe "${pkg}_extralibs" $pkg_libs
1256 }
1257
1258 check_exec(){
1259     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1260 }
1261
1262 check_exec_crash(){
1263     log check_exec_crash "$@"
1264     code=$(cat)
1265
1266     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1267     # are safe but may not be available everywhere.  Thus we use
1268     # raise(SIGTERM) instead.  The check is run in a subshell so we
1269     # can redirect the "Terminated" message from the shell.  SIGBUS
1270     # is not defined by standard C so it is used conditionally.
1271
1272     (check_exec "$@") >> $logfile 2>&1 <<EOF
1273 #include <signal.h>
1274 static void sighandler(int sig){
1275     raise(SIGTERM);
1276 }
1277 int foo(void){
1278     $code
1279 }
1280 int (*func_ptr)(void) = foo;
1281 int main(void){
1282     signal(SIGILL, sighandler);
1283     signal(SIGFPE, sighandler);
1284     signal(SIGSEGV, sighandler);
1285 #ifdef SIGBUS
1286     signal(SIGBUS, sighandler);
1287 #endif
1288     return func_ptr();
1289 }
1290 EOF
1291 }
1292
1293 check_type(){
1294     log check_type "$@"
1295     headers=$1
1296     type=$2
1297     shift 2
1298     disable_safe "$type"
1299     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1300 }
1301
1302 check_struct(){
1303     log check_struct "$@"
1304     headers=$1
1305     struct=$2
1306     member=$3
1307     shift 3
1308     disable_safe "${struct}_${member}"
1309     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1310         enable_safe "${struct}_${member}"
1311 }
1312
1313 check_builtin(){
1314     log check_builtin "$@"
1315     name=$1
1316     headers=$2
1317     builtin=$3
1318     shift 3
1319     disable "$name"
1320     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1321 }
1322
1323 check_compile_assert(){
1324     log check_compile_assert "$@"
1325     name=$1
1326     headers=$2
1327     condition=$3
1328     shift 3
1329     disable "$name"
1330     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1331 }
1332
1333 require(){
1334     log require "$@"
1335     name_version="$1"
1336     name="${1%% *}"
1337     headers="$2"
1338     func="$3"
1339     shift 3
1340     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1341 }
1342
1343 require_cpp(){
1344     name="$1"
1345     headers="$2"
1346     classes="$3"
1347     shift 3
1348     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1349 }
1350
1351 use_pkg_config(){
1352     log use_pkg_config "$@"
1353     pkg="$1"
1354     check_pkg_config "$@" || return 1
1355     add_cflags    $(get_safe "${pkg}_cflags")
1356     add_extralibs $(get_safe "${pkg}_extralibs")
1357 }
1358
1359 require_pkg_config(){
1360     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1361 }
1362
1363 hostcc_e(){
1364     eval printf '%s\\n' $HOSTCC_E
1365 }
1366
1367 hostcc_o(){
1368     eval printf '%s\\n' $HOSTCC_O
1369 }
1370
1371 check_host_cc(){
1372     log check_host_cc "$@"
1373     cat > $TMPC
1374     log_file $TMPC
1375     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1376 }
1377
1378 check_host_cpp(){
1379     log check_host_cpp "$@"
1380     cat > $TMPC
1381     log_file $TMPC
1382     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1383 }
1384
1385 check_host_cppflags(){
1386     log check_host_cppflags "$@"
1387     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1388 int x;
1389 EOF
1390 }
1391
1392 check_host_cflags(){
1393     log check_host_cflags "$@"
1394     set -- $($host_cflags_filter "$@")
1395     check_host_cc "$@" <<EOF && append host_cflags "$@"
1396 int x;
1397 EOF
1398 }
1399
1400 check_host_cpp_condition(){
1401     log check_host_cpp_condition "$@"
1402     header=$1
1403     condition=$2
1404     shift 2
1405     check_host_cpp "$@" <<EOF
1406 #include <$header>
1407 #if !($condition)
1408 #error "unsatisfied condition: $condition"
1409 #endif
1410 EOF
1411 }
1412
1413 cp_if_changed(){
1414     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1415     mkdir -p "$(dirname $2)"
1416     cp -f "$1" "$2"
1417 }
1418
1419 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1420 # system-dependent things.
1421
1422 AVCODEC_COMPONENTS="
1423     bsfs
1424     decoders
1425     encoders
1426     hwaccels
1427     parsers
1428 "
1429
1430 AVDEVICE_COMPONENTS="
1431     indevs
1432     outdevs
1433 "
1434 AVFILTER_COMPONENTS="
1435     filters
1436 "
1437 AVFORMAT_COMPONENTS="
1438     demuxers
1439     muxers
1440     protocols
1441 "
1442
1443 AVRESAMPLE_COMPONENTS=""
1444 AVUTIL_COMPONENTS=""
1445
1446 COMPONENT_LIST="
1447     $AVCODEC_COMPONENTS
1448     $AVDEVICE_COMPONENTS
1449     $AVFILTER_COMPONENTS
1450     $AVFORMAT_COMPONENTS
1451     $AVRESAMPLE_COMPONENTS
1452     $AVUTIL_COMPONENTS
1453 "
1454
1455 EXAMPLE_LIST="
1456     avio_dir_cmd_example
1457     avio_reading_example
1458     decode_audio_example
1459     decode_video_example
1460     demuxing_decoding_example
1461     encode_audio_example
1462     encode_video_example
1463     extract_mvs_example
1464     filter_audio_example
1465     filtering_audio_example
1466     filtering_video_example
1467     http_multiclient_example
1468     metadata_example
1469     muxing_example
1470     qsvdec_example
1471     remuxing_example
1472     resampling_audio_example
1473     scaling_video_example
1474     transcode_aac_example
1475     transcoding_example
1476 "
1477 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1478     bzlib
1479     iconv
1480     libxcb
1481     libxcb_shm
1482     libxcb_shape
1483     libxcb_xfixes
1484     lzma
1485     schannel
1486     sdl
1487     sdl2
1488     securetransport
1489     xlib
1490     zlib
1491 "
1492
1493 EXTERNAL_LIBRARY_GPL_LIST="
1494     avisynth
1495     frei0r
1496     libcdio
1497     librubberband
1498     libvidstab
1499     libx264
1500     libx265
1501     libxavs
1502     libxvid
1503 "
1504
1505 EXTERNAL_LIBRARY_NONFREE_LIST="
1506     decklink
1507     libfdk_aac
1508     openssl
1509 "
1510
1511 EXTERNAL_LIBRARY_VERSION3_LIST="
1512     gmp
1513     libopencore_amrnb
1514     libopencore_amrwb
1515     libvo_amrwbenc
1516 "
1517
1518 EXTERNAL_LIBRARY_GPLV3_LIST="
1519     libsmbclient
1520 "
1521
1522 EXTERNAL_LIBRARY_LIST="
1523     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1524     $EXTERNAL_LIBRARY_GPL_LIST
1525     $EXTERNAL_LIBRARY_NONFREE_LIST
1526     $EXTERNAL_LIBRARY_VERSION3_LIST
1527     $EXTERNAL_LIBRARY_GPLV3_LIST
1528     chromaprint
1529     crystalhd
1530     gcrypt
1531     gnutls
1532     jni
1533     ladspa
1534     libass
1535     libbluray
1536     libbs2b
1537     libcaca
1538     libcelt
1539     libdc1394
1540     libflite
1541     libfontconfig
1542     libfreetype
1543     libfribidi
1544     libgme
1545     libgsm
1546     libiec61883
1547     libilbc
1548     libkvazaar
1549     libmodplug
1550     libmp3lame
1551     libnut
1552     libopencv
1553     libopenh264
1554     libopenjpeg
1555     libopenmpt
1556     libopus
1557     libpulse
1558     librtmp
1559     libschroedinger
1560     libshine
1561     libsmbclient
1562     libsnappy
1563     libsoxr
1564     libspeex
1565     libssh
1566     libtesseract
1567     libtheora
1568     libtwolame
1569     libv4l2
1570     libvorbis
1571     libvpx
1572     libwavpack
1573     libwebp
1574     libzimg
1575     libzmq
1576     libzvbi
1577     mediacodec
1578     netcdf
1579     openal
1580     opencl
1581     opengl
1582     videotoolbox
1583 "
1584 HWACCEL_AUTODETECT_LIBRARY_LIST="
1585     audiotoolbox
1586     cuda
1587     cuvid
1588     d3d11va
1589     dxva2
1590     nvenc
1591     vaapi
1592     vda
1593     vdpau
1594     videotoolbox_hwaccel
1595     xvmc
1596 "
1597
1598 HWACCEL_LIBRARY_NONFREE_LIST="
1599     libnpp
1600 "
1601
1602 HWACCEL_LIBRARY_LIST="
1603     $HWACCEL_AUTODETECT_LIBRARY_LIST
1604     $HWACCEL_LIBRARY_NONFREE_LIST
1605     libmfx
1606     mmal
1607     omx
1608 "
1609
1610 DOCUMENT_LIST="
1611     doc
1612     htmlpages
1613     manpages
1614     podpages
1615     txtpages
1616 "
1617
1618 FEATURE_LIST="
1619     ftrapv
1620     gray
1621     hardcoded_tables
1622     omx_rpi
1623     runtime_cpudetect
1624     safe_bitstream_reader
1625     shared
1626     small
1627     static
1628     swscale_alpha
1629 "
1630
1631 LIBRARY_LIST="
1632     avcodec
1633     avdevice
1634     avfilter
1635     avformat
1636     avresample
1637     avutil
1638     postproc
1639     swresample
1640     swscale
1641 "
1642
1643 LICENSE_LIST="
1644     gpl
1645     nonfree
1646     version3
1647 "
1648
1649 PROGRAM_LIST="
1650     ffplay
1651     ffprobe
1652     ffserver
1653     ffmpeg
1654 "
1655
1656 SUBSYSTEM_LIST="
1657     dct
1658     dwt
1659     error_resilience
1660     faan
1661     fast_unaligned
1662     fft
1663     lsp
1664     lzo
1665     mdct
1666     pixelutils
1667     network
1668     rdft
1669 "
1670
1671 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1672 CONFIG_LIST="
1673     $DOCUMENT_LIST
1674     $EXAMPLE_LIST
1675     $EXTERNAL_LIBRARY_LIST
1676     $HWACCEL_LIBRARY_LIST
1677     $FEATURE_LIST
1678     $LICENSE_LIST
1679     $LIBRARY_LIST
1680     $PROGRAM_LIST
1681     $SUBSYSTEM_LIST
1682     fontconfig
1683     memory_poisoning
1684     neon_clobber_test
1685     ossfuzz
1686     pic
1687     raise_major
1688     thumb
1689     valgrind_backtrace
1690     xmm_clobber_test
1691     $COMPONENT_LIST
1692 "
1693
1694 THREADS_LIST="
1695     pthreads
1696     os2threads
1697     w32threads
1698 "
1699
1700 ATOMICS_LIST="
1701     atomics_gcc
1702     atomics_suncc
1703     atomics_win32
1704 "
1705
1706 AUTODETECT_LIBS="
1707     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1708     $HWACCEL_AUTODETECT_LIBRARY_LIST
1709     $THREADS_LIST
1710 "
1711
1712 ARCH_LIST="
1713     aarch64
1714     alpha
1715     arm
1716     avr32
1717     avr32_ap
1718     avr32_uc
1719     bfin
1720     ia64
1721     m68k
1722     mips
1723     mips64
1724     parisc
1725     ppc
1726     ppc64
1727     s390
1728     sh4
1729     sparc
1730     sparc64
1731     tilegx
1732     tilepro
1733     tomi
1734     x86
1735     x86_32
1736     x86_64
1737 "
1738
1739 ARCH_EXT_LIST_ARM="
1740     armv5te
1741     armv6
1742     armv6t2
1743     armv8
1744     neon
1745     vfp
1746     vfpv3
1747     setend
1748 "
1749
1750 ARCH_EXT_LIST_MIPS="
1751     mipsfpu
1752     mips32r2
1753     mips32r5
1754     mips64r2
1755     mips32r6
1756     mips64r6
1757     mipsdsp
1758     mipsdspr2
1759     msa
1760 "
1761
1762 ARCH_EXT_LIST_LOONGSON="
1763     loongson2
1764     loongson3
1765     mmi
1766 "
1767
1768 ARCH_EXT_LIST_X86_SIMD="
1769     aesni
1770     amd3dnow
1771     amd3dnowext
1772     avx
1773     avx2
1774     fma3
1775     fma4
1776     mmx
1777     mmxext
1778     sse
1779     sse2
1780     sse3
1781     sse4
1782     sse42
1783     ssse3
1784     xop
1785 "
1786
1787 ARCH_EXT_LIST_PPC="
1788     altivec
1789     dcbzl
1790     ldbrx
1791     power8
1792     ppc4xx
1793     vsx
1794 "
1795
1796 ARCH_EXT_LIST_X86="
1797     $ARCH_EXT_LIST_X86_SIMD
1798     cpunop
1799     i686
1800 "
1801
1802 ARCH_EXT_LIST="
1803     $ARCH_EXT_LIST_ARM
1804     $ARCH_EXT_LIST_PPC
1805     $ARCH_EXT_LIST_X86
1806     $ARCH_EXT_LIST_MIPS
1807     $ARCH_EXT_LIST_LOONGSON
1808 "
1809
1810 ARCH_FEATURES="
1811     aligned_stack
1812     fast_64bit
1813     fast_clz
1814     fast_cmov
1815     local_aligned_8
1816     local_aligned_16
1817     local_aligned_32
1818     simd_align_16
1819     simd_align_32
1820 "
1821
1822 BUILTIN_LIST="
1823     atomic_cas_ptr
1824     machine_rw_barrier
1825     MemoryBarrier
1826     mm_empty
1827     rdtsc
1828     sarestart
1829     sem_timedwait
1830     sync_val_compare_and_swap
1831 "
1832 HAVE_LIST_CMDLINE="
1833     inline_asm
1834     symver
1835     yasm
1836 "
1837
1838 HAVE_LIST_PUB="
1839     bigendian
1840     fast_unaligned
1841 "
1842
1843 HEADERS_LIST="
1844     alsa_asoundlib_h
1845     altivec_h
1846     arpa_inet_h
1847     asm_types_h
1848     cdio_paranoia_h
1849     cdio_paranoia_paranoia_h
1850     cuda_h
1851     d3d11_h
1852     dispatch_dispatch_h
1853     dev_bktr_ioctl_bt848_h
1854     dev_bktr_ioctl_meteor_h
1855     dev_ic_bt8xx_h
1856     dev_video_bktr_ioctl_bt848_h
1857     dev_video_meteor_ioctl_meteor_h
1858     direct_h
1859     dirent_h
1860     dlfcn_h
1861     dxva_h
1862     ES2_gl_h
1863     gsm_h
1864     io_h
1865     mach_mach_time_h
1866     machine_ioctl_bt848_h
1867     machine_ioctl_meteor_h
1868     malloc_h
1869     opencv2_core_core_c_h
1870     openjpeg_2_1_openjpeg_h
1871     openjpeg_2_0_openjpeg_h
1872     openjpeg_1_5_openjpeg_h
1873     OpenGL_gl3_h
1874     poll_h
1875     sndio_h
1876     soundcard_h
1877     stdatomic_h
1878     sys_mman_h
1879     sys_param_h
1880     sys_resource_h
1881     sys_select_h
1882     sys_soundcard_h
1883     sys_time_h
1884     sys_un_h
1885     sys_videoio_h
1886     termios_h
1887     udplite_h
1888     unistd_h
1889     valgrind_valgrind_h
1890     windows_h
1891     winsock2_h
1892 "
1893
1894 INTRINSICS_LIST="
1895     intrinsics_neon
1896 "
1897
1898 COMPLEX_FUNCS="
1899     cabs
1900     cexp
1901 "
1902
1903 MATH_FUNCS="
1904     atanf
1905     atan2f
1906     cbrt
1907     cbrtf
1908     copysign
1909     cosf
1910     erf
1911     exp2
1912     exp2f
1913     expf
1914     hypot
1915     isfinite
1916     isinf
1917     isnan
1918     ldexpf
1919     llrint
1920     llrintf
1921     log2
1922     log2f
1923     log10f
1924     lrint
1925     lrintf
1926     powf
1927     rint
1928     round
1929     roundf
1930     sinf
1931     trunc
1932     truncf
1933 "
1934
1935 SYSTEM_FUNCS="
1936     access
1937     aligned_malloc
1938     arc4random
1939     clock_gettime
1940     closesocket
1941     CommandLineToArgvW
1942     CoTaskMemFree
1943     CryptGenRandom
1944     dlopen
1945     fcntl
1946     flt_lim
1947     fork
1948     getaddrinfo
1949     gethrtime
1950     getopt
1951     GetProcessAffinityMask
1952     GetProcessMemoryInfo
1953     GetProcessTimes
1954     getrusage
1955     GetSystemTimeAsFileTime
1956     gettimeofday
1957     glob
1958     glXGetProcAddress
1959     gmtime_r
1960     inet_aton
1961     isatty
1962     jack_port_get_latency_range
1963     kbhit
1964     LoadLibrary
1965     localtime_r
1966     lstat
1967     lzo1x_999_compress
1968     mach_absolute_time
1969     MapViewOfFile
1970     memalign
1971     mkstemp
1972     mmap
1973     mprotect
1974     nanosleep
1975     PeekNamedPipe
1976     posix_memalign
1977     pthread_cancel
1978     sched_getaffinity
1979     SetConsoleTextAttribute
1980     SetConsoleCtrlHandler
1981     setmode
1982     setrlimit
1983     Sleep
1984     strerror_r
1985     sysconf
1986     sysctl
1987     usleep
1988     UTGetOSTypeFromString
1989     VirtualAlloc
1990     wglGetProcAddress
1991 "
1992
1993 TOOLCHAIN_FEATURES="
1994     as_dn_directive
1995     as_fpu_directive
1996     as_func
1997     as_object_arch
1998     asm_mod_q
1999     attribute_may_alias
2000     attribute_packed
2001     ebp_available
2002     ebx_available
2003     gnu_as
2004     gnu_windres
2005     ibm_asm
2006     inline_asm_direct_symbol_refs
2007     inline_asm_labels
2008     inline_asm_nonlocal_labels
2009     pragma_deprecated
2010     rsync_contimeout
2011     symver_asm_label
2012     symver_gnu_asm
2013     vfp_args
2014     xform_asm
2015     xmm_clobbers
2016 "
2017
2018 TYPES_LIST="
2019     CONDITION_VARIABLE_Ptr
2020     socklen_t
2021     struct_addrinfo
2022     struct_group_source_req
2023     struct_ip_mreq_source
2024     struct_ipv6_mreq
2025     struct_msghdr_msg_flags
2026     struct_pollfd
2027     struct_rusage_ru_maxrss
2028     struct_sctp_event_subscribe
2029     struct_sockaddr_in6
2030     struct_sockaddr_sa_len
2031     struct_sockaddr_storage
2032     struct_stat_st_mtim_tv_nsec
2033     struct_v4l2_frmivalenum_discrete
2034 "
2035
2036 HAVE_LIST="
2037     $ARCH_EXT_LIST
2038     $(add_suffix _external $ARCH_EXT_LIST)
2039     $(add_suffix _inline   $ARCH_EXT_LIST)
2040     $ARCH_FEATURES
2041     $ATOMICS_LIST
2042     $BUILTIN_LIST
2043     $COMPLEX_FUNCS
2044     $HAVE_LIST_CMDLINE
2045     $HAVE_LIST_PUB
2046     $HEADERS_LIST
2047     $INTRINSICS_LIST
2048     $MATH_FUNCS
2049     $SYSTEM_FUNCS
2050     $THREADS_LIST
2051     $TOOLCHAIN_FEATURES
2052     $TYPES_LIST
2053     alsa
2054     atomics_native
2055     dos_paths
2056     dxva2_lib
2057     dxva2api_cobj
2058     jack
2059     libc_msvcrt
2060     makeinfo
2061     makeinfo_html
2062     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2063     perl
2064     pod2man
2065     sdl2
2066     section_data_rel_ro
2067     sndio
2068     texi2html
2069     threads
2070     vaapi_drm
2071     vaapi_x11
2072     vdpau_x11
2073     winrt
2074 "
2075
2076 # options emitted with CONFIG_ prefix but not available on the command line
2077 CONFIG_EXTRA="
2078     aandcttables
2079     ac3dsp
2080     audio_frame_queue
2081     audiodsp
2082     blockdsp
2083     bswapdsp
2084     cabac
2085     dirac_parse
2086     dvprofile
2087     exif
2088     faandct
2089     faanidct
2090     fdctdsp
2091     flacdsp
2092     fmtconvert
2093     frame_thread_encoder
2094     g722dsp
2095     golomb
2096     gplv3
2097     h263dsp
2098     h264chroma
2099     h264dsp
2100     h264parse
2101     h264pred
2102     h264qpel
2103     hevcparse
2104     hpeldsp
2105     huffman
2106     huffyuvdsp
2107     huffyuvencdsp
2108     idctdsp
2109     iirfilter
2110     mdct15
2111     intrax8
2112     iso_media
2113     ividsp
2114     jpegtables
2115     lgplv3
2116     libx262
2117     llauddsp
2118     llviddsp
2119     llvidencdsp
2120     lpc
2121     lzf
2122     me_cmp
2123     mpeg_er
2124     mpegaudio
2125     mpegaudiodsp
2126     mpegaudioheader
2127     mpegvideo
2128     mpegvideoenc
2129     mss34dsp
2130     pixblockdsp
2131     qpeldsp
2132     qsv
2133     qsvdec
2134     qsvenc
2135     rangecoder
2136     riffdec
2137     riffenc
2138     rtpdec
2139     rtpenc_chain
2140     rv34dsp
2141     sinewin
2142     snappy
2143     srtp
2144     startcode
2145     texturedsp
2146     texturedspenc
2147     tpeldsp
2148     vaapi_encode
2149     vc1dsp
2150     videodsp
2151     vp3dsp
2152     vp56dsp
2153     vp8dsp
2154     vt_bt2020
2155     wma_freqs
2156     wmv2dsp
2157 "
2158
2159 CMDLINE_SELECT="
2160     $ARCH_EXT_LIST
2161     $CONFIG_LIST
2162     $HAVE_LIST_CMDLINE
2163     $THREADS_LIST
2164     asm
2165     cross_compile
2166     debug
2167     extra_warnings
2168     logging
2169     lto
2170     optimizations
2171     rpath
2172     stripping
2173 "
2174
2175 PATHS_LIST="
2176     bindir
2177     datadir
2178     docdir
2179     incdir
2180     libdir
2181     mandir
2182     pkgconfigdir
2183     prefix
2184     shlibdir
2185     install_name_dir
2186 "
2187
2188 CMDLINE_SET="
2189     $PATHS_LIST
2190     ar
2191     arch
2192     as
2193     assert_level
2194     build_suffix
2195     cc
2196     objcc
2197     cpu
2198     cross_prefix
2199     custom_allocator
2200     cxx
2201     dep_cc
2202     doxygen
2203     env
2204     extra_version
2205     gas
2206     host_cc
2207     host_cflags
2208     host_extralibs
2209     host_ld
2210     host_ldflags
2211     host_os
2212     install
2213     ld
2214     ln_s
2215     logfile
2216     malloc_prefix
2217     nm
2218     optflags
2219     pkg_config
2220     pkg_config_flags
2221     progs_suffix
2222     random_seed
2223     ranlib
2224     samples
2225     strip
2226     sws_max_filter_size
2227     sysinclude
2228     sysroot
2229     target_exec
2230     target_os
2231     target_path
2232     target_samples
2233     tempprefix
2234     toolchain
2235     valgrind
2236     yasmexe
2237 "
2238
2239 CMDLINE_APPEND="
2240     extra_cflags
2241     extra_cxxflags
2242     extra_objcflags
2243     host_cppflags
2244 "
2245
2246 # code dependency declarations
2247
2248 # architecture extensions
2249
2250 armv5te_deps="arm"
2251 armv6_deps="arm"
2252 armv6t2_deps="arm"
2253 armv8_deps="aarch64"
2254 neon_deps_any="aarch64 arm"
2255 intrinsics_neon_deps="neon"
2256 vfp_deps_any="aarch64 arm"
2257 vfpv3_deps="vfp"
2258 setend_deps="arm"
2259
2260 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2261
2262 loongson2_deps="mips"
2263 loongson3_deps="mips"
2264 mipsfpu_deps="mips"
2265 mipsdsp_deps="mips"
2266 mipsdspr2_deps="mips"
2267 mips32r2_deps="mips"
2268 mips32r5_deps="mips"
2269 mips32r6_deps="mips"
2270 mips64r2_deps="mips"
2271 mips64r6_deps="mips"
2272 msa_deps="mipsfpu"
2273 mmi_deps="mips"
2274
2275 altivec_deps="ppc"
2276 dcbzl_deps="ppc"
2277 ldbrx_deps="ppc"
2278 ppc4xx_deps="ppc"
2279 vsx_deps="altivec"
2280 power8_deps="vsx"
2281
2282 cpunop_deps="i686"
2283 x86_64_select="i686"
2284 x86_64_suggest="fast_cmov"
2285
2286 amd3dnow_deps="mmx"
2287 amd3dnowext_deps="amd3dnow"
2288 i686_deps="x86"
2289 mmx_deps="x86"
2290 mmxext_deps="mmx"
2291 sse_deps="mmxext"
2292 sse2_deps="sse"
2293 sse3_deps="sse2"
2294 ssse3_deps="sse3"
2295 sse4_deps="ssse3"
2296 sse42_deps="sse4"
2297 aesni_deps="sse42"
2298 avx_deps="sse42"
2299 xop_deps="avx"
2300 fma3_deps="avx"
2301 fma4_deps="avx"
2302 avx2_deps="avx"
2303
2304 mmx_external_deps="yasm"
2305 mmx_inline_deps="inline_asm"
2306 mmx_suggest="mmx_external mmx_inline"
2307
2308 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2309     eval dep=\$${ext}_deps
2310     eval ${ext}_external_deps='"${dep}_external"'
2311     eval ${ext}_inline_deps='"${dep}_inline"'
2312     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2313 done
2314
2315 aligned_stack_if_any="aarch64 ppc x86"
2316 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2317 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2318 fast_unaligned_if_any="aarch64 ppc x86"
2319 simd_align_16_if_any="altivec neon sse"
2320 simd_align_32_if_any="avx"
2321
2322 # system capabilities
2323 symver_if_any="symver_asm_label symver_gnu_asm"
2324 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2325
2326 # threading support
2327 atomics_gcc_if="sync_val_compare_and_swap"
2328 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2329 atomics_win32_if="MemoryBarrier"
2330 atomics_native_if_any="$ATOMICS_LIST"
2331 w32threads_deps="atomics_native"
2332 threads_if_any="$THREADS_LIST"
2333
2334 # subsystems
2335 dct_select="rdft"
2336 dirac_parse_select="golomb"
2337 error_resilience_select="me_cmp"
2338 faandct_deps="faan fdctdsp"
2339 faanidct_deps="faan idctdsp"
2340 h264dsp_select="startcode"
2341 hevcparse_select="golomb"
2342 frame_thread_encoder_deps="encoders threads"
2343 intrax8_select="blockdsp idctdsp"
2344 mdct_select="fft"
2345 mdct15_select="fft"
2346 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2347 mpeg_er_select="error_resilience"
2348 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2349 mpegaudiodsp_select="dct"
2350 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2351 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2352 vc1dsp_select="h264chroma qpeldsp startcode"
2353 rdft_select="fft"
2354
2355 # decoders / encoders
2356 aac_decoder_select="mdct15 mdct sinewin"
2357 aac_fixed_decoder_select="mdct sinewin"
2358 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2359 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2360 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2361 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2362 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2363 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2364 adpcm_g722_decoder_select="g722dsp"
2365 adpcm_g722_encoder_select="g722dsp"
2366 aic_decoder_select="golomb idctdsp"
2367 alac_encoder_select="lpc"
2368 als_decoder_select="bswapdsp"
2369 amrnb_decoder_select="lsp"
2370 amrwb_decoder_select="lsp"
2371 amv_decoder_select="sp5x_decoder exif"
2372 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2373 ape_decoder_select="bswapdsp llauddsp"
2374 apng_decoder_select="zlib"
2375 apng_encoder_select="llvidencdsp zlib"
2376 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2377 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2378 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2379 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2380 atrac1_decoder_select="mdct sinewin"
2381 atrac3_decoder_select="mdct"
2382 atrac3p_decoder_select="mdct sinewin"
2383 avrn_decoder_select="exif jpegtables"
2384 bink_decoder_select="blockdsp hpeldsp"
2385 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2386 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2387 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2388 cllc_decoder_select="bswapdsp"
2389 comfortnoise_encoder_select="lpc"
2390 cook_decoder_select="audiodsp mdct sinewin"
2391 cscd_decoder_select="lzo"
2392 cscd_decoder_suggest="zlib"
2393 dca_decoder_select="mdct"
2394 dds_decoder_select="texturedsp"
2395 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2396 dnxhd_decoder_select="blockdsp idctdsp"
2397 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2398 dvvideo_decoder_select="dvprofile idctdsp"
2399 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2400 dxa_decoder_select="zlib"
2401 dxv_decoder_select="lzf texturedsp"
2402 eac3_decoder_select="ac3_decoder"
2403 eac3_encoder_select="ac3_encoder"
2404 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2405 eatgq_decoder_select="aandcttables"
2406 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2407 exr_decoder_select="zlib"
2408 ffv1_decoder_select="rangecoder"
2409 ffv1_encoder_select="rangecoder"
2410 ffvhuff_decoder_select="huffyuv_decoder"
2411 ffvhuff_encoder_select="huffyuv_encoder"
2412 fic_decoder_select="golomb"
2413 flac_decoder_select="flacdsp"
2414 flac_encoder_select="bswapdsp flacdsp lpc"
2415 flashsv2_decoder_select="zlib"
2416 flashsv2_encoder_select="zlib"
2417 flashsv_decoder_select="zlib"
2418 flashsv_encoder_select="zlib"
2419 flv_decoder_select="h263_decoder"
2420 flv_encoder_select="h263_encoder"
2421 fourxm_decoder_select="blockdsp bswapdsp"
2422 fraps_decoder_select="bswapdsp huffman"
2423 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2424 g729_decoder_select="audiodsp"
2425 h261_decoder_select="mpegvideo"
2426 h261_encoder_select="aandcttables mpegvideoenc"
2427 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2428 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2429 h263i_decoder_select="h263_decoder"
2430 h263p_decoder_select="h263_decoder"
2431 h263p_encoder_select="h263_encoder"
2432 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2433 h264_decoder_suggest="error_resilience"
2434 hap_decoder_select="snappy texturedsp"
2435 hap_encoder_deps="libsnappy"
2436 hap_encoder_select="texturedspenc"
2437 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2438 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2439 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2440 iac_decoder_select="imc_decoder"
2441 imc_decoder_select="bswapdsp fft mdct sinewin"
2442 indeo3_decoder_select="hpeldsp"
2443 indeo4_decoder_select="ividsp"
2444 indeo5_decoder_select="ividsp"
2445 interplay_video_decoder_select="hpeldsp"
2446 jpegls_decoder_select="mjpeg_decoder"
2447 jv_decoder_select="blockdsp"
2448 lagarith_decoder_select="llviddsp"
2449 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2450 magicyuv_decoder_select="llviddsp"
2451 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2452 metasound_decoder_select="lsp mdct sinewin"
2453 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2454 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2455 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2456 mjpegb_decoder_select="mjpeg_decoder"
2457 mlp_decoder_select="mlp_parser"
2458 motionpixels_decoder_select="bswapdsp"
2459 mp1_decoder_select="mpegaudio"
2460 mp1float_decoder_select="mpegaudio"
2461 mp2_decoder_select="mpegaudio"
2462 mp2float_decoder_select="mpegaudio"
2463 mp3_decoder_select="mpegaudio"
2464 mp3adu_decoder_select="mpegaudio"
2465 mp3adufloat_decoder_select="mpegaudio"
2466 mp3float_decoder_select="mpegaudio"
2467 mp3on4_decoder_select="mpegaudio"
2468 mp3on4float_decoder_select="mpegaudio"
2469 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2470 mpc8_decoder_select="mpegaudiodsp"
2471 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2472 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2473 mpegvideo_decoder_select="mpegvideo"
2474 mpeg1video_decoder_select="mpegvideo"
2475 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2476 mpeg2video_decoder_select="mpegvideo"
2477 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2478 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2479 mpeg4_encoder_select="h263_encoder"
2480 msa1_decoder_select="mss34dsp"
2481 mscc_decoder_select="zlib"
2482 msmpeg4v1_decoder_select="h263_decoder"
2483 msmpeg4v2_decoder_select="h263_decoder"
2484 msmpeg4v2_encoder_select="h263_encoder"
2485 msmpeg4v3_decoder_select="h263_decoder"
2486 msmpeg4v3_encoder_select="h263_encoder"
2487 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2488 mts2_decoder_select="mss34dsp"
2489 mxpeg_decoder_select="mjpeg_decoder"
2490 nellymoser_decoder_select="mdct sinewin"
2491 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2492 nuv_decoder_select="idctdsp lzo"
2493 on2avc_decoder_select="mdct"
2494 opus_decoder_deps="swresample"
2495 opus_decoder_select="mdct15"
2496 opus_encoder_select="audio_frame_queue mdct15"
2497 png_decoder_select="zlib"
2498 png_encoder_select="llvidencdsp zlib"
2499 prores_decoder_select="blockdsp idctdsp"
2500 prores_encoder_select="fdctdsp"
2501 qcelp_decoder_select="lsp"
2502 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2503 ra_144_decoder_select="audiodsp"
2504 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2505 ralf_decoder_select="golomb"
2506 rawvideo_decoder_select="bswapdsp"
2507 rscc_decoder_select="zlib"
2508 rtjpeg_decoder_select="me_cmp"
2509 rv10_decoder_select="h263_decoder"
2510 rv10_encoder_select="h263_encoder"
2511 rv20_decoder_select="h263_decoder"
2512 rv20_encoder_select="h263_encoder"
2513 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2514 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2515 screenpresso_decoder_select="zlib"
2516 shorten_decoder_select="bswapdsp"
2517 sipr_decoder_select="lsp"
2518 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2519 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2520 sonic_decoder_select="golomb rangecoder"
2521 sonic_encoder_select="golomb rangecoder"
2522 sonic_ls_encoder_select="golomb rangecoder"
2523 sp5x_decoder_select="mjpeg_decoder"
2524 srgc_decoder_select="zlib"
2525 svq1_decoder_select="hpeldsp"
2526 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2527 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2528 svq3_decoder_suggest="zlib"
2529 tak_decoder_select="audiodsp"
2530 tdsc_decoder_select="zlib mjpeg_decoder"
2531 theora_decoder_select="vp3_decoder"
2532 thp_decoder_select="mjpeg_decoder"
2533 tiff_decoder_suggest="zlib lzma"
2534 tiff_encoder_suggest="zlib"
2535 truehd_decoder_select="mlp_parser"
2536 truemotion2_decoder_select="bswapdsp"
2537 truespeech_decoder_select="bswapdsp"
2538 tscc_decoder_select="zlib"
2539 twinvq_decoder_select="mdct lsp sinewin"
2540 txd_decoder_select="texturedsp"
2541 utvideo_decoder_select="bswapdsp llviddsp"
2542 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2543 vble_decoder_select="llviddsp"
2544 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2545 vc1_qsv_decoder_deps="libmfx"
2546 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2547 vc1image_decoder_select="vc1_decoder"
2548 vorbis_decoder_select="mdct"
2549 vorbis_encoder_select="mdct"
2550 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2551 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2552 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2553 vp6a_decoder_select="vp6_decoder"
2554 vp6f_decoder_select="vp6_decoder"
2555 vp7_decoder_select="h264pred videodsp vp8dsp"
2556 vp8_decoder_select="h264pred videodsp vp8dsp"
2557 vp9_decoder_select="videodsp vp9_parser"
2558 webp_decoder_select="vp8_decoder exif"
2559 wmalossless_decoder_select="llauddsp"
2560 wmapro_decoder_select="mdct sinewin wma_freqs"
2561 wmav1_decoder_select="mdct sinewin wma_freqs"
2562 wmav1_encoder_select="mdct sinewin wma_freqs"
2563 wmav2_decoder_select="mdct sinewin wma_freqs"
2564 wmav2_encoder_select="mdct sinewin wma_freqs"
2565 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2566 wmv1_decoder_select="h263_decoder"
2567 wmv1_encoder_select="h263_encoder"
2568 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2569 wmv2_encoder_select="h263_encoder wmv2dsp"
2570 wmv3_decoder_select="vc1_decoder"
2571 wmv3image_decoder_select="wmv3_decoder"
2572 xma1_decoder_select="wmapro_decoder"
2573 xma2_decoder_select="wmapro_decoder"
2574 zerocodec_decoder_select="zlib"
2575 zlib_decoder_select="zlib"
2576 zlib_encoder_select="zlib"
2577 zmbv_decoder_select="zlib"
2578 zmbv_encoder_select="zlib"
2579
2580 # platform codecs
2581 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2582 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2583
2584 # hardware accelerators
2585 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2586 cuda_deps_any="dlopen LoadLibrary"
2587 cuvid_deps="cuda"
2588 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2589 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2590 dxva2_extralibs="-luser32"
2591 dxva2_lib_deps="dxva2"
2592 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2593 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2594 vda_deps="vda_framework pthreads"
2595 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2596 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2597 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2598 xvmc_deps="X11_extensions_XvMClib_h"
2599
2600 h263_vaapi_hwaccel_deps="vaapi"
2601 h263_vaapi_hwaccel_select="h263_decoder"
2602 h263_videotoolbox_hwaccel_deps="videotoolbox"
2603 h263_videotoolbox_hwaccel_select="h263_decoder"
2604 h264_cuvid_hwaccel_deps="cuda cuvid"
2605 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2606 h264_d3d11va_hwaccel_deps="d3d11va"
2607 h264_d3d11va_hwaccel_select="h264_decoder"
2608 h264_dxva2_hwaccel_deps="dxva2"
2609 h264_dxva2_hwaccel_select="h264_decoder"
2610 h264_mediacodec_hwaccel_deps="mediacodec"
2611 h264_mmal_hwaccel_deps="mmal"
2612 h264_qsv_hwaccel_deps="libmfx"
2613 h264_vaapi_hwaccel_deps="vaapi"
2614 h264_vaapi_hwaccel_select="h264_decoder"
2615 h264_vda_hwaccel_deps="vda"
2616 h264_vda_hwaccel_select="h264_decoder"
2617 h264_vda_old_hwaccel_deps="vda"
2618 h264_vda_old_hwaccel_select="h264_decoder"
2619 h264_vdpau_hwaccel_deps="vdpau"
2620 h264_vdpau_hwaccel_select="h264_decoder"
2621 h264_videotoolbox_hwaccel_deps="videotoolbox"
2622 h264_videotoolbox_hwaccel_select="h264_decoder"
2623 hevc_cuvid_hwaccel_deps="cuda cuvid"
2624 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2625 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2626 hevc_d3d11va_hwaccel_select="hevc_decoder"
2627 hevc_mediacodec_hwaccel_deps="mediacodec"
2628 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2629 hevc_dxva2_hwaccel_select="hevc_decoder"
2630 hevc_qsv_hwaccel_deps="libmfx"
2631 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2632 hevc_vaapi_hwaccel_select="hevc_decoder"
2633 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2634 hevc_vdpau_hwaccel_select="hevc_decoder"
2635 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2636 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2637 mpeg_xvmc_hwaccel_deps="xvmc"
2638 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2639 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2640 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2641 mpeg1_vdpau_hwaccel_deps="vdpau"
2642 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2643 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2644 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2645 mpeg1_xvmc_hwaccel_deps="xvmc"
2646 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2647 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2648 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2649 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2650 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2651 mpeg2_dxva2_hwaccel_deps="dxva2"
2652 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2653 mpeg2_mmal_hwaccel_deps="mmal"
2654 mpeg2_qsv_hwaccel_deps="libmfx"
2655 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2656 mpeg2_vaapi_hwaccel_deps="vaapi"
2657 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2658 mpeg2_vdpau_hwaccel_deps="vdpau"
2659 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2660 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2661 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2662 mpeg2_xvmc_hwaccel_deps="xvmc"
2663 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2664 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2665 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2666 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2667 mpeg4_mmal_hwaccel_deps="mmal"
2668 mpeg4_vaapi_hwaccel_deps="vaapi"
2669 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2670 mpeg4_vdpau_hwaccel_deps="vdpau"
2671 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2672 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2673 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2674 vc1_cuvid_hwaccel_deps="cuda cuvid"
2675 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2676 vc1_d3d11va_hwaccel_deps="d3d11va"
2677 vc1_d3d11va_hwaccel_select="vc1_decoder"
2678 vc1_dxva2_hwaccel_deps="dxva2"
2679 vc1_dxva2_hwaccel_select="vc1_decoder"
2680 vc1_mmal_hwaccel_deps="mmal"
2681 vc1_qsv_hwaccel_deps="libmfx"
2682 vc1_qsv_hwaccel_select="qsvdec_vc1"
2683 vc1_vaapi_hwaccel_deps="vaapi"
2684 vc1_vaapi_hwaccel_select="vc1_decoder"
2685 vc1_vdpau_hwaccel_deps="vdpau"
2686 vc1_vdpau_hwaccel_select="vc1_decoder"
2687 vp8_cuvid_hwaccel_deps="cuda cuvid"
2688 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2689 vp9_cuvid_hwaccel_deps="cuda cuvid"
2690 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2691 vp8_mediacodec_hwaccel_deps="mediacodec"
2692 vp8_qsv_hwaccel_deps="libmfx"
2693 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2694 vp9_d3d11va_hwaccel_select="vp9_decoder"
2695 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2696 vp9_dxva2_hwaccel_select="vp9_decoder"
2697 vp9_mediacodec_hwaccel_deps="mediacodec"
2698 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2699 vp9_vaapi_hwaccel_select="vp9_decoder"
2700 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2701 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2702 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2703 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2704
2705 # hardware-accelerated codecs
2706 omx_deps="dlopen pthreads"
2707 omx_extralibs='$ldl'
2708 omx_rpi_select="omx"
2709 qsvdec_select="qsv"
2710 qsvenc_select="qsv"
2711 vaapi_encode_deps="vaapi"
2712
2713 hwupload_cuda_filter_deps="cuda"
2714 scale_npp_filter_deps="cuda libnpp"
2715
2716 nvenc_deps="cuda"
2717 nvenc_deps_any="dlopen LoadLibrary"
2718 nvenc_encoder_deps="nvenc"
2719
2720 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2721 h264_cuvid_decoder_deps="cuda cuvid"
2722 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2723 h264_mediacodec_decoder_deps="mediacodec"
2724 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2725 h264_mmal_decoder_deps="mmal"
2726 h264_nvenc_encoder_deps="nvenc"
2727 h264_omx_encoder_deps="omx"
2728 h264_qsv_decoder_deps="libmfx"
2729 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2730 h264_qsv_encoder_deps="libmfx"
2731 h264_qsv_encoder_select="qsvenc"
2732 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2733 h264_vaapi_encoder_select="vaapi_encode golomb"
2734 h264_vda_decoder_deps="vda"
2735 h264_vda_decoder_select="h264_decoder"
2736 h264_vdpau_decoder_deps="vdpau"
2737 h264_vdpau_decoder_select="h264_decoder"
2738 hevc_cuvid_decoder_deps="cuda cuvid"
2739 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2740 hevc_mediacodec_decoder_deps="mediacodec"
2741 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2742 hevc_nvenc_encoder_deps="nvenc"
2743 hevc_qsv_decoder_deps="libmfx"
2744 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2745 hevc_qsv_encoder_deps="libmfx"
2746 hevc_qsv_encoder_select="hevcparse qsvenc"
2747 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2748 hevc_vaapi_encoder_select="vaapi_encode golomb"
2749 mjpeg_cuvid_decoder_deps="cuda cuvid"
2750 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2751 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2752 mpeg1_cuvid_decoder_deps="cuda cuvid"
2753 mpeg1_vdpau_decoder_deps="vdpau"
2754 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2755 mpeg2_crystalhd_decoder_select="crystalhd"
2756 mpeg2_cuvid_decoder_deps="cuda cuvid"
2757 mpeg2_mmal_decoder_deps="mmal"
2758 mpeg2_qsv_decoder_deps="libmfx"
2759 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2760 mpeg2_qsv_encoder_deps="libmfx"
2761 mpeg2_qsv_encoder_select="qsvenc"
2762 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2763 mpeg2_vaapi_encoder_select="vaapi_encode"
2764 mpeg4_crystalhd_decoder_select="crystalhd"
2765 mpeg4_cuvid_decoder_deps="cuda cuvid"
2766 mpeg4_mediacodec_decoder_deps="mediacodec"
2767 mpeg4_mmal_decoder_deps="mmal"
2768 mpeg4_omx_encoder_deps="omx"
2769 mpeg4_vdpau_decoder_deps="vdpau"
2770 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2771 mpeg_vdpau_decoder_deps="vdpau"
2772 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2773 msmpeg4_crystalhd_decoder_select="crystalhd"
2774 nvenc_h264_encoder_select="h264_nvenc_encoder"
2775 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2776 vc1_crystalhd_decoder_select="crystalhd"
2777 vc1_cuvid_decoder_deps="cuda cuvid"
2778 vc1_mmal_decoder_deps="mmal"
2779 vc1_vdpau_decoder_deps="vdpau"
2780 vc1_vdpau_decoder_select="vc1_decoder"
2781 vp8_cuvid_decoder_deps="cuda cuvid"
2782 vp8_mediacodec_decoder_deps="mediacodec"
2783 vp8_qsv_decoder_deps="libmfx"
2784 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2785 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2786 vp8_vaapi_encoder_select="vaapi_encode"
2787 vp9_cuvid_decoder_deps="cuda cuvid"
2788 vp9_mediacodec_decoder_deps="mediacodec"
2789 wmv3_crystalhd_decoder_select="crystalhd"
2790 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2791
2792 # parsers
2793 h264_parser_select="golomb h264dsp h264parse"
2794 hevc_parser_select="hevcparse"
2795 mpegaudio_parser_select="mpegaudioheader"
2796 mpegvideo_parser_select="mpegvideo"
2797 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2798 vc1_parser_select="vc1dsp"
2799
2800 # bitstream_filters
2801 mjpeg2jpeg_bsf_select="jpegtables"
2802
2803 # external libraries
2804 aac_at_decoder_deps="audiotoolbox"
2805 ac3_at_decoder_deps="audiotoolbox"
2806 ac3_at_decoder_select="ac3_parser"
2807 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2808 alac_at_decoder_deps="audiotoolbox"
2809 amr_nb_at_decoder_deps="audiotoolbox"
2810 avisynth_deps_any="dlopen LoadLibrary"
2811 avisynth_demuxer_deps="avisynth"
2812 avisynth_demuxer_select="riffdec"
2813 eac3_at_decoder_deps="audiotoolbox"
2814 eac3_at_decoder_select="ac3_parser"
2815 gsm_ms_at_decoder_deps="audiotoolbox"
2816 ilbc_at_decoder_deps="audiotoolbox"
2817 mp1_at_decoder_deps="audiotoolbox"
2818 mp2_at_decoder_deps="audiotoolbox"
2819 mp3_at_decoder_deps="audiotoolbox"
2820 mp1_at_decoder_select="mpegaudioheader"
2821 mp2_at_decoder_select="mpegaudioheader"
2822 mp3_at_decoder_select="mpegaudioheader"
2823 pcm_alaw_at_decoder_deps="audiotoolbox"
2824 pcm_mulaw_at_decoder_deps="audiotoolbox"
2825 qdmc_at_decoder_deps="audiotoolbox"
2826 qdm2_at_decoder_deps="audiotoolbox"
2827 aac_at_encoder_deps="audiotoolbox"
2828 aac_at_encoder_select="audio_frame_queue"
2829 alac_at_encoder_deps="audiotoolbox"
2830 alac_at_encoder_select="audio_frame_queue"
2831 ilbc_at_encoder_deps="audiotoolbox"
2832 ilbc_at_encoder_select="audio_frame_queue"
2833 pcm_alaw_at_encoder_deps="audiotoolbox"
2834 pcm_alaw_at_encoder_select="audio_frame_queue"
2835 pcm_mulaw_at_encoder_deps="audiotoolbox"
2836 pcm_mulaw_at_encoder_select="audio_frame_queue"
2837 chromaprint_muxer_deps="chromaprint"
2838 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2839 libcelt_decoder_deps="libcelt"
2840 libfdk_aac_decoder_deps="libfdk_aac"
2841 libfdk_aac_encoder_deps="libfdk_aac"
2842 libfdk_aac_encoder_select="audio_frame_queue"
2843 libgme_demuxer_deps="libgme"
2844 libgsm_decoder_deps="libgsm"
2845 libgsm_encoder_deps="libgsm"
2846 libgsm_ms_decoder_deps="libgsm"
2847 libgsm_ms_encoder_deps="libgsm"
2848 libilbc_decoder_deps="libilbc"
2849 libilbc_encoder_deps="libilbc"
2850 libkvazaar_encoder_deps="libkvazaar"
2851 libmodplug_demuxer_deps="libmodplug"
2852 libmp3lame_encoder_deps="libmp3lame"
2853 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2854 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2855 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2856 libopencore_amrnb_encoder_select="audio_frame_queue"
2857 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2858 libopenh264_decoder_deps="libopenh264"
2859 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2860 libopenh264_encoder_deps="libopenh264"
2861 libopenjpeg_decoder_deps="libopenjpeg"
2862 libopenjpeg_encoder_deps="libopenjpeg"
2863 libopenmpt_demuxer_deps="libopenmpt"
2864 libopus_decoder_deps="libopus"
2865 libopus_encoder_deps="libopus"
2866 libopus_encoder_select="audio_frame_queue"
2867 libschroedinger_decoder_deps="libschroedinger"
2868 libschroedinger_encoder_deps="libschroedinger"
2869 libshine_encoder_deps="libshine"
2870 libshine_encoder_select="audio_frame_queue"
2871 libspeex_decoder_deps="libspeex"
2872 libspeex_encoder_deps="libspeex"
2873 libspeex_encoder_select="audio_frame_queue"
2874 libtheora_encoder_deps="libtheora"
2875 libtwolame_encoder_deps="libtwolame"
2876 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2877 libvorbis_decoder_deps="libvorbis"
2878 libvorbis_encoder_deps="libvorbis"
2879 libvorbis_encoder_select="audio_frame_queue"
2880 libvpx_vp8_decoder_deps="libvpx"
2881 libvpx_vp8_encoder_deps="libvpx"
2882 libvpx_vp9_decoder_deps="libvpx"
2883 libvpx_vp9_encoder_deps="libvpx"
2884 libwavpack_encoder_deps="libwavpack"
2885 libwavpack_encoder_select="audio_frame_queue"
2886 libwebp_encoder_deps="libwebp"
2887 libwebp_anim_encoder_deps="libwebp"
2888 libx262_encoder_deps="libx262"
2889 libx264_encoder_deps="libx264"
2890 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2891 libx264rgb_encoder_select="libx264_encoder"
2892 libx265_encoder_deps="libx265"
2893 libxavs_encoder_deps="libxavs"
2894 libxvid_encoder_deps="libxvid"
2895 libzvbi_teletext_decoder_deps="libzvbi"
2896 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2897 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2898 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2899 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2900 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2901
2902 # demuxers / muxers
2903 ac3_demuxer_select="ac3_parser"
2904 aiff_muxer_select="iso_media"
2905 asf_demuxer_select="riffdec"
2906 asf_o_demuxer_select="riffdec"
2907 asf_muxer_select="riffenc"
2908 asf_stream_muxer_select="asf_muxer"
2909 avi_demuxer_select="iso_media riffdec exif"
2910 avi_muxer_select="riffenc"
2911 caf_demuxer_select="iso_media riffdec"
2912 caf_muxer_select="iso_media"
2913 dash_muxer_select="mp4_muxer"
2914 dirac_demuxer_select="dirac_parser"
2915 dts_demuxer_select="dca_parser"
2916 dtshd_demuxer_select="dca_parser"
2917 dv_demuxer_select="dvprofile"
2918 dv_muxer_select="dvprofile"
2919 dxa_demuxer_select="riffdec"
2920 eac3_demuxer_select="ac3_parser"
2921 f4v_muxer_select="mov_muxer"
2922 fifo_muxer_deps="threads"
2923 flac_demuxer_select="flac_parser"
2924 hds_muxer_select="flv_muxer"
2925 hls_muxer_select="mpegts_muxer"
2926 image2_alias_pix_demuxer_select="image2_demuxer"
2927 image2_brender_pix_demuxer_select="image2_demuxer"
2928 ipod_muxer_select="mov_muxer"
2929 ismv_muxer_select="mov_muxer"
2930 libnut_demuxer_deps="libnut"
2931 libnut_muxer_deps="libnut"
2932 matroska_audio_muxer_select="matroska_muxer"
2933 matroska_demuxer_select="iso_media riffdec"
2934 matroska_demuxer_suggest="bzlib lzo zlib"
2935 matroska_muxer_select="iso_media riffenc"
2936 mmf_muxer_select="riffenc"
2937 mov_demuxer_select="iso_media riffdec"
2938 mov_demuxer_suggest="zlib"
2939 mov_muxer_select="iso_media riffenc rtpenc_chain"
2940 mp3_demuxer_select="mpegaudio_parser"
2941 mp3_muxer_select="mpegaudioheader"
2942 mp4_muxer_select="mov_muxer"
2943 mpegts_demuxer_select="iso_media"
2944 mpegts_muxer_select="adts_muxer latm_muxer"
2945 mpegtsraw_demuxer_select="mpegts_demuxer"
2946 mxf_d10_muxer_select="mxf_muxer"
2947 mxf_opatom_muxer_select="mxf_muxer"
2948 nut_muxer_select="riffenc"
2949 nuv_demuxer_select="riffdec"
2950 oga_muxer_select="ogg_muxer"
2951 ogg_demuxer_select="dirac_parse"
2952 ogv_muxer_select="ogg_muxer"
2953 opus_muxer_select="ogg_muxer"
2954 psp_muxer_select="mov_muxer"
2955 rtp_demuxer_select="sdp_demuxer"
2956 rtp_muxer_select="golomb"
2957 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2958 rtsp_demuxer_select="http_protocol rtpdec"
2959 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2960 sap_demuxer_select="sdp_demuxer"
2961 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2962 sdp_demuxer_select="rtpdec"
2963 smoothstreaming_muxer_select="ismv_muxer"
2964 spdif_muxer_select="aac_parser"
2965 spx_muxer_select="ogg_muxer"
2966 swf_demuxer_suggest="zlib"
2967 tak_demuxer_select="tak_parser"
2968 tg2_muxer_select="mov_muxer"
2969 tgp_muxer_select="mov_muxer"
2970 vobsub_demuxer_select="mpegps_demuxer"
2971 w64_demuxer_select="wav_demuxer"
2972 w64_muxer_select="wav_muxer"
2973 wav_demuxer_select="riffdec"
2974 wav_muxer_select="riffenc"
2975 webm_muxer_select="iso_media riffenc"
2976 webm_dash_manifest_demuxer_select="matroska_demuxer"
2977 wtv_demuxer_select="mpegts_demuxer riffdec"
2978 wtv_muxer_select="mpegts_muxer riffenc"
2979 xmv_demuxer_select="riffdec"
2980 xwma_demuxer_select="riffdec"
2981
2982 # indevs / outdevs
2983 alsa_indev_deps="alsa"
2984 alsa_outdev_deps="alsa"
2985 avfoundation_indev_deps="pthreads"
2986 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2987 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2988 caca_outdev_deps="libcaca"
2989 decklink_indev_deps="decklink threads"
2990 decklink_indev_extralibs="-lstdc++"
2991 decklink_outdev_deps="decklink threads"
2992 decklink_outdev_extralibs="-lstdc++"
2993 dshow_indev_deps="IBaseFilter"
2994 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2995 dv1394_indev_deps="dv1394"
2996 dv1394_indev_select="dv_demuxer"
2997 fbdev_indev_deps="linux_fb_h"
2998 fbdev_outdev_deps="linux_fb_h"
2999 gdigrab_indev_deps="CreateDIBSection"
3000 gdigrab_indev_extralibs="-lgdi32"
3001 gdigrab_indev_select="bmp_decoder"
3002 iec61883_indev_deps="libiec61883"
3003 jack_indev_deps="jack"
3004 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3005 lavfi_indev_deps="avfilter"
3006 libcdio_indev_deps="libcdio"
3007 libdc1394_indev_deps="libdc1394"
3008 libv4l2_indev_deps="libv4l2"
3009 openal_indev_deps="openal"
3010 opengl_outdev_deps="opengl"
3011 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3012 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3013 pulse_indev_deps="libpulse"
3014 pulse_outdev_deps="libpulse"
3015 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3016 qtkit_indev_select="qtkit"
3017 sdl2_outdev_deps="sdl2"
3018 sndio_indev_deps="sndio"
3019 sndio_outdev_deps="sndio"
3020 v4l_indev_deps="linux_videodev_h"
3021 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3022 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3023 vfwcap_indev_deps="vfw32 vfwcap_defines"
3024 xcbgrab_indev_deps="libxcb"
3025 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3026 xv_outdev_extralibs="-lXv -lX11 -lXext"
3027
3028 # protocols
3029 async_protocol_deps="threads"
3030 bluray_protocol_deps="libbluray"
3031 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3032 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3033 ffrtmpcrypt_protocol_select="tcp_protocol"
3034 ffrtmphttp_protocol_deps="!librtmp_protocol"
3035 ffrtmphttp_protocol_select="http_protocol"
3036 ftp_protocol_select="tcp_protocol"
3037 gopher_protocol_select="network"
3038 http_protocol_select="tcp_protocol"
3039 httpproxy_protocol_select="tcp_protocol"
3040 https_protocol_select="tls_protocol"
3041 icecast_protocol_select="http_protocol"
3042 librtmp_protocol_deps="librtmp"
3043 librtmpe_protocol_deps="librtmp"
3044 librtmps_protocol_deps="librtmp"
3045 librtmpt_protocol_deps="librtmp"
3046 librtmpte_protocol_deps="librtmp"
3047 libsmbclient_protocol_deps="libsmbclient gplv3"
3048 libssh_protocol_deps="libssh"
3049 mmsh_protocol_select="http_protocol"
3050 mmst_protocol_select="network"
3051 rtmp_protocol_deps="!librtmp_protocol"
3052 rtmp_protocol_select="tcp_protocol"
3053 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3054 rtmps_protocol_deps="!librtmp_protocol"
3055 rtmps_protocol_select="tls_protocol"
3056 rtmpt_protocol_select="ffrtmphttp_protocol"
3057 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3058 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3059 rtp_protocol_select="udp_protocol"
3060 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3061 sctp_protocol_select="network"
3062 srtp_protocol_select="rtp_protocol srtp"
3063 tcp_protocol_select="network"
3064 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3065 tls_gnutls_protocol_select="tcp_protocol"
3066 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3067 tls_openssl_protocol_select="tcp_protocol"
3068 tls_schannel_protocol_deps="schannel"
3069 tls_schannel_protocol_select="tcp_protocol"
3070 tls_securetransport_protocol_deps="securetransport"
3071 tls_securetransport_protocol_select="tcp_protocol"
3072 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3073 udp_protocol_select="network"
3074 udplite_protocol_select="network"
3075 unix_protocol_deps="sys_un_h"
3076 unix_protocol_select="network"
3077
3078 # filters
3079 afftfilt_filter_deps="avcodec"
3080 afftfilt_filter_select="fft"
3081 amovie_filter_deps="avcodec avformat"
3082 aresample_filter_deps="swresample"
3083 ass_filter_deps="libass"
3084 atempo_filter_deps="avcodec"
3085 atempo_filter_select="rdft"
3086 azmq_filter_deps="libzmq"
3087 blackframe_filter_deps="gpl"
3088 boxblur_filter_deps="gpl"
3089 bs2b_filter_deps="libbs2b"
3090 colormatrix_filter_deps="gpl"
3091 cover_rect_filter_deps="avcodec avformat gpl"
3092 cropdetect_filter_deps="gpl"
3093 deinterlace_qsv_filter_deps="libmfx"
3094 deinterlace_vaapi_filter_deps="vaapi"
3095 delogo_filter_deps="gpl"
3096 deshake_filter_select="pixelutils"
3097 drawtext_filter_deps="libfreetype"
3098 eq_filter_deps="gpl"
3099 fftfilt_filter_deps="avcodec"
3100 fftfilt_filter_select="rdft"
3101 find_rect_filter_deps="avcodec avformat gpl"
3102 firequalizer_filter_deps="avcodec"
3103 firequalizer_filter_select="rdft"
3104 flite_filter_deps="libflite"
3105 framerate_filter_select="pixelutils"
3106 frei0r_filter_deps="frei0r dlopen"
3107 frei0r_src_filter_deps="frei0r dlopen"
3108 fspp_filter_deps="gpl"
3109 geq_filter_deps="gpl"
3110 histeq_filter_deps="gpl"
3111 hqdn3d_filter_deps="gpl"
3112 interlace_filter_deps="gpl"
3113 kerndeint_filter_deps="gpl"
3114 ladspa_filter_deps="ladspa dlopen"
3115 mcdeint_filter_deps="avcodec gpl"
3116 movie_filter_deps="avcodec avformat"
3117 mpdecimate_filter_deps="gpl"
3118 mpdecimate_filter_select="pixelutils"
3119 mptestsrc_filter_deps="gpl"
3120 negate_filter_deps="lut_filter"
3121 nnedi_filter_deps="gpl"
3122 ocr_filter_deps="libtesseract"
3123 ocv_filter_deps="libopencv"
3124 owdenoise_filter_deps="gpl"
3125 pan_filter_deps="swresample"
3126 perspective_filter_deps="gpl"
3127 phase_filter_deps="gpl"
3128 pp7_filter_deps="gpl"
3129 pp_filter_deps="gpl postproc"
3130 pullup_filter_deps="gpl"
3131 removelogo_filter_deps="avcodec avformat swscale"
3132 repeatfields_filter_deps="gpl"
3133 resample_filter_deps="avresample"
3134 rubberband_filter_deps="librubberband"
3135 sab_filter_deps="gpl swscale"
3136 scale2ref_filter_deps="swscale"
3137 scale_filter_deps="swscale"
3138 scale_qsv_filter_deps="libmfx"
3139 select_filter_select="pixelutils"
3140 showcqt_filter_deps="avcodec avformat swscale"
3141 showcqt_filter_select="fft"
3142 showfreqs_filter_deps="avcodec"
3143 showfreqs_filter_select="fft"
3144 showspectrum_filter_deps="avcodec"
3145 showspectrum_filter_select="fft"
3146 showspectrumpic_filter_deps="avcodec"
3147 showspectrumpic_filter_select="fft"
3148 signature_filter_deps="gpl avcodec avformat"
3149 smartblur_filter_deps="gpl swscale"
3150 sofalizer_filter_deps="netcdf avcodec"
3151 sofalizer_filter_select="fft"
3152 spectrumsynth_filter_deps="avcodec"
3153 spectrumsynth_filter_select="fft"
3154 spp_filter_deps="gpl avcodec"
3155 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3156 stereo3d_filter_deps="gpl"
3157 subtitles_filter_deps="avformat avcodec libass"
3158 super2xsai_filter_deps="gpl"
3159 pixfmts_super2xsai_test_deps="super2xsai_filter"
3160 tinterlace_filter_deps="gpl"
3161 tinterlace_merge_test_deps="tinterlace_filter"
3162 tinterlace_pad_test_deps="tinterlace_filter"
3163 uspp_filter_deps="gpl avcodec"
3164 vaguedenoiser_filter_deps="gpl"
3165 vidstabdetect_filter_deps="libvidstab"
3166 vidstabtransform_filter_deps="libvidstab"
3167 zmq_filter_deps="libzmq"
3168 zoompan_filter_deps="swscale"
3169 zscale_filter_deps="libzimg"
3170 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3171
3172 # examples
3173 avio_dir_cmd_deps="avformat avutil"
3174 avio_reading_deps="avformat avcodec avutil"
3175 decode_audio_example_deps="avcodec avutil"
3176 decode_video_example_deps="avcodec avutil"
3177 demuxing_decoding_example_deps="avcodec avformat avutil"
3178 encode_audio_example_deps="avcodec avutil"
3179 encode_video_example_deps="avcodec avutil"
3180 extract_mvs_example_deps="avcodec avformat avutil"
3181 filter_audio_example_deps="avfilter avutil"
3182 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3183 filtering_video_example_deps="avfilter avcodec avformat avutil"
3184 http_multiclient_example_deps="avformat avutil fork"
3185 metadata_example_deps="avformat avutil"
3186 muxing_example_deps="avcodec avformat avutil swscale"
3187 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3188 remuxing_example_deps="avcodec avformat avutil"
3189 resampling_audio_example_deps="avutil swresample"
3190 scaling_video_example_deps="avutil swscale"
3191 transcode_aac_example_deps="avcodec avformat swresample"
3192 transcoding_example_deps="avfilter avcodec avformat avutil"
3193
3194 # libraries, in linking order
3195 avcodec_deps="avutil"
3196 avcodec_select="null_bsf"
3197 avdevice_deps="avformat avcodec avutil"
3198 avfilter_deps="avutil"
3199 avformat_deps="avcodec avutil"
3200 avresample_deps="avutil"
3201 postproc_deps="avutil gpl"
3202 swresample_deps="avutil"
3203 swscale_deps="avutil"
3204
3205 # programs
3206 ffmpeg_deps="avcodec avfilter avformat swresample"
3207 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3208                null_filter
3209                trim_filter"
3210 ffplay_deps="avcodec avformat swscale swresample sdl2"
3211 ffplay_extralibs='$sdl2_extralibs'
3212 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3213 ffprobe_deps="avcodec avformat"
3214 ffserver_deps="avformat fork sarestart"
3215 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3216
3217 # documentation
3218 podpages_deps="perl"
3219 manpages_deps="perl pod2man"
3220 htmlpages_deps="perl"
3221 htmlpages_deps_any="makeinfo_html texi2html"
3222 txtpages_deps="perl makeinfo"
3223 doc_deps_any="manpages htmlpages podpages txtpages"
3224
3225 # default parameters
3226
3227 logfile="config.log"
3228
3229 # installation paths
3230 prefix_default="/usr/local"
3231 bindir_default='${prefix}/bin'
3232 datadir_default='${prefix}/share/ffmpeg'
3233 docdir_default='${prefix}/share/doc/ffmpeg'
3234 incdir_default='${prefix}/include'
3235 libdir_default='${prefix}/lib'
3236 mandir_default='${prefix}/share/man'
3237
3238 # toolchain
3239 ar_default="ar"
3240 cc_default="gcc"
3241 cxx_default="g++"
3242 host_cc_default="gcc"
3243 doxygen_default="doxygen"
3244 install="install"
3245 ln_s_default="ln -s -f"
3246 nm_default="nm -g"
3247 objformat="elf"
3248 pkg_config_default=pkg-config
3249 ranlib_default="ranlib"
3250 strip_default="strip"
3251 version_script='--version-script'
3252 yasmexe_default="yasm"
3253 windres_default="windres"
3254
3255 # OS
3256 target_os_default=$(tolower $(uname -s))
3257 host_os=$target_os_default
3258
3259 # machine
3260 if test "$target_os_default" = aix; then
3261     arch_default=$(uname -p)
3262     strip_default="strip -X32_64"
3263 else
3264     arch_default=$(uname -m)
3265 fi
3266 cpu="generic"
3267 intrinsics="none"
3268
3269 # configurable options
3270 enable $PROGRAM_LIST
3271 enable $DOCUMENT_LIST
3272 enable $EXAMPLE_LIST
3273 enable $(filter_out avresample $LIBRARY_LIST)
3274 enable stripping
3275
3276 enable asm
3277 enable debug
3278 enable doc
3279 enable faan faandct faanidct
3280 enable optimizations
3281 enable runtime_cpudetect
3282 enable safe_bitstream_reader
3283 enable static
3284 enable swscale_alpha
3285 enable valgrind_backtrace
3286
3287 sws_max_filter_size_default=256
3288 set_default sws_max_filter_size
3289
3290 # build settings
3291 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3292 LIBPREF="lib"
3293 LIBSUF=".a"
3294 FULLNAME='$(NAME)$(BUILDSUF)'
3295 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3296 SLIBPREF="lib"
3297 SLIBSUF=".so"
3298 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3299 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3300 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3301 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3302 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3303 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3304 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3305
3306 asflags_filter=echo
3307 cflags_filter=echo
3308 ldflags_filter=echo
3309
3310 AS_C='-c'
3311 AS_O='-o $@'
3312 CC_C='-c'
3313 CC_E='-E -o $@'
3314 CC_O='-o $@'
3315 CXX_C='-c'
3316 CXX_O='-o $@'
3317 OBJCC_C='-c'
3318 OBJCC_E='-E -o $@'
3319 OBJCC_O='-o $@'
3320 LD_O='-o $@'
3321 LD_LIB='-l%'
3322 LD_PATH='-L'
3323 HOSTCC_C='-c'
3324 HOSTCC_E='-E -o $@'
3325 HOSTCC_O='-o $@'
3326 HOSTLD_O='-o $@'
3327
3328 host_extralibs='-lm'
3329 host_cflags_filter=echo
3330 host_ldflags_filter=echo
3331
3332 target_path='$(CURDIR)'
3333
3334 # since the object filename is not given with the -MM flag, the compiler
3335 # is only able to print the basename, and we must add the path ourselves
3336 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3337 DEPFLAGS='-MM'
3338
3339 # find source path
3340 if test -f configure; then
3341     source_path=.
3342 else
3343     source_path=$(cd $(dirname "$0"); pwd)
3344     case "$source_path" in
3345         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3346     esac
3347     test -e "$source_path/config.h" &&
3348         die "Out of tree builds are impossible with config.h in source dir."
3349 fi
3350
3351 for v in "$@"; do
3352     r=${v#*=}
3353     l=${v%"$r"}
3354     r=$(sh_quote "$r")
3355     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3356 done
3357
3358 find_things(){
3359     thing=$1
3360     pattern=$2
3361     file=$source_path/$3
3362     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3363 }
3364
3365 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3366 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3367 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3368 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3369 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3370 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3371 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3372 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3373 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3374
3375 find_things_extern(){
3376     thing=$1
3377     pattern=$2
3378     file=$source_path/$3
3379     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3380 }
3381
3382 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3383 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3384
3385 ALL_COMPONENTS="
3386     $BSF_LIST
3387     $DECODER_LIST
3388     $DEMUXER_LIST
3389     $ENCODER_LIST
3390     $FILTER_LIST
3391     $HWACCEL_LIST
3392     $INDEV_LIST
3393     $MUXER_LIST
3394     $OUTDEV_LIST
3395     $PARSER_LIST
3396     $PROTOCOL_LIST
3397 "
3398
3399 for n in $COMPONENT_LIST; do
3400     v=$(toupper ${n%s})_LIST
3401     eval enable \$$v
3402     eval ${n}_if_any="\$$v"
3403 done
3404
3405 enable $ARCH_EXT_LIST
3406
3407 die_unknown(){
3408     echo "Unknown option \"$1\"."
3409     echo "See $0 --help for available options."
3410     exit 1
3411 }
3412
3413 print_in_columns() {
3414     cols=$(expr $ncols / 24)
3415     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3416 }
3417
3418 show_list() {
3419     suffix=_$1
3420     shift
3421     echo $* | sed s/$suffix//g | print_in_columns
3422     exit 0
3423 }
3424
3425 rand_list(){
3426     IFS=', '
3427     set -- $*
3428     unset IFS
3429     for thing; do
3430         comp=${thing%:*}
3431         prob=${thing#$comp}
3432         prob=${prob#:}
3433         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3434         echo "prob ${prob:-0.5}"
3435         printf '%s\n' $comp
3436     done
3437 }
3438
3439 do_random(){
3440     action=$1
3441     shift
3442     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3443     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3444 }
3445
3446 for opt do
3447     optval="${opt#*=}"
3448     case "$opt" in
3449         --extra-ldflags=*)
3450             add_ldflags $optval
3451         ;;
3452         --extra-ldexeflags=*)
3453             add_ldexeflags $optval
3454         ;;
3455         --extra-ldlibflags=*)
3456             add_ldlibflags $optval
3457         ;;
3458         --extra-libs=*)
3459             add_extralibs $optval
3460         ;;
3461         --disable-devices)
3462             disable $INDEV_LIST $OUTDEV_LIST
3463         ;;
3464         --enable-debug=*)
3465             debuglevel="$optval"
3466         ;;
3467         --disable-programs)
3468             disable $PROGRAM_LIST
3469         ;;
3470         --disable-everything)
3471             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3472         ;;
3473         --disable-all)
3474             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3475             disable $LIBRARY_LIST $PROGRAM_LIST doc
3476             enable avutil
3477         ;;
3478         --enable-random|--disable-random)
3479             action=${opt%%-random}
3480             do_random ${action#--} $COMPONENT_LIST
3481         ;;
3482         --enable-random=*|--disable-random=*)
3483             action=${opt%%-random=*}
3484             do_random ${action#--} $optval
3485         ;;
3486         --enable-*=*|--disable-*=*)
3487             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3488             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3489             eval list=\$$(toupper $thing)_LIST
3490             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3491             list=$(filter "$name" $list)
3492             [ "$list" = "" ] && warn "Option $opt did not match anything"
3493             $action $list
3494         ;;
3495         --enable-?*|--disable-?*)
3496             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3497             if is_in $option $COMPONENT_LIST; then
3498                 test $action = disable && action=unset
3499                 eval $action \$$(toupper ${option%s})_LIST
3500             elif is_in $option $CMDLINE_SELECT; then
3501                 $action $option
3502             else
3503                 die_unknown $opt
3504             fi
3505         ;;
3506         --list-*)
3507             NAME="${opt#--list-}"
3508             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3509             NAME=${NAME%s}
3510             eval show_list $NAME \$$(toupper $NAME)_LIST
3511         ;;
3512         --help|-h) show_help
3513         ;;
3514         --quiet|-q) quiet=yes
3515         ;;
3516         --fatal-warnings) enable fatal_warnings
3517         ;;
3518         --libfuzzer=*)
3519             libfuzzer_path="$optval"
3520         ;;
3521         *)
3522             optname="${opt%%=*}"
3523             optname="${optname#--}"
3524             optname=$(echo "$optname" | sed 's/-/_/g')
3525             if is_in $optname $CMDLINE_SET; then
3526                 eval $optname='$optval'
3527             elif is_in $optname $CMDLINE_APPEND; then
3528                 append $optname "$optval"
3529             else
3530                 die_unknown $opt
3531             fi
3532         ;;
3533     esac
3534 done
3535
3536 for e in $env; do
3537     eval "export $e"
3538 done
3539
3540 # Mark specifically enabled, but normally autodetected libraries as requested.
3541 for lib in $AUTODETECT_LIBS; do
3542     enabled $lib && request $lib
3543 done
3544
3545 # Enable platform codecs by default.
3546 enable_weak audiotoolbox
3547
3548 # Enable hwaccels by default.
3549 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3550 enable_weak xlib
3551
3552 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3553
3554 disabled logging && logfile=/dev/null
3555
3556 die_license_disabled() {
3557     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3558 }
3559
3560 die_license_disabled_gpl() {
3561     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3562 }
3563
3564 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3565 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3566
3567 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3568 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3569
3570 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3571
3572 # Disable all the library-specific components if the library itself
3573 # is disabled, see AVCODEC_LIST and following _LIST variables.
3574
3575 disable_components(){
3576     disabled ${1} && disable $(
3577         eval components="\$$(toupper ${1})_COMPONENTS"
3578         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3579     )
3580 }
3581
3582 map 'disable_components $v' $LIBRARY_LIST
3583
3584 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3585 set >> $logfile
3586
3587 test -n "$valgrind" && toolchain="valgrind-memcheck"
3588
3589 enabled ossfuzz && {
3590     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3591     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3592 }
3593
3594 case "$toolchain" in
3595     *-asan)
3596         cc_default="${toolchain%-asan}"
3597         add_cflags  -fsanitize=address
3598         add_ldflags -fsanitize=address
3599     ;;
3600     *-msan)
3601         cc_default="${toolchain%-msan}"
3602         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3603         add_ldflags -fsanitize=memory
3604     ;;
3605     *-tsan)
3606         cc_default="${toolchain%-tsan}"
3607         add_cflags  -fsanitize=thread -fPIE
3608         add_ldflags -fsanitize=thread -pie
3609         case "$toolchain" in
3610             gcc-tsan)
3611                 add_cflags  -fPIC
3612                 add_ldflags -fPIC
3613                 ;;
3614         esac
3615     ;;
3616     *-usan)
3617         cc_default="${toolchain%-usan}"
3618         add_cflags  -fsanitize=undefined
3619         add_ldflags -fsanitize=undefined
3620     ;;
3621     valgrind-*)
3622         target_exec_default="valgrind"
3623         case "$toolchain" in
3624             valgrind-massif)
3625                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3626                 ;;
3627             valgrind-memcheck)
3628                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3629                 ;;
3630         esac
3631     ;;
3632     msvc)
3633         # Check whether the current MSVC version needs the C99 converter.
3634         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3635         # support enough of C99 to build ffmpeg. Default to the new
3636         # behaviour if the regexp was unable to match anything, since this
3637         # successfully parses the version number of existing supported
3638         # versions that require the converter (MSVC 2010 and 2012).
3639         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3640         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3641             cc_default="cl"
3642             cxx_default="cl"
3643         else
3644             cc_default="c99wrap cl"
3645             cxx_default="c99wrap cl"
3646         fi
3647         ld_default="$source_path/compat/windows/mslink"
3648         nm_default="dumpbin -symbols"
3649         ar_default="lib"
3650         case "$arch" in
3651         arm*)
3652             as_default="armasm"
3653             ;;
3654         esac
3655         target_os_default="win32"
3656         # Use a relative path for TMPDIR. This makes sure all the
3657         # ffconf temp files are written with a relative path, avoiding
3658         # issues with msys/win32 path conversion for MSVC parameters
3659         # such as -Fo<file> or -out:<file>.
3660         TMPDIR=.
3661     ;;
3662     icl)
3663         cc_default="icl"
3664         ld_default="xilink"
3665         nm_default="dumpbin -symbols"
3666         ar_default="xilib"
3667         target_os_default="win32"
3668         TMPDIR=.
3669     ;;
3670     gcov)
3671         add_cflags  -fprofile-arcs -ftest-coverage
3672         add_ldflags -fprofile-arcs -ftest-coverage
3673     ;;
3674     llvm-cov)
3675         add_cflags -fprofile-arcs -ftest-coverage
3676         add_ldflags --coverage
3677     ;;
3678     hardened)
3679         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3680         add_cflags   -fno-strict-overflow -fstack-protector-all
3681         add_ldflags  -Wl,-z,relro -Wl,-z,now
3682         add_cflags   -fPIE
3683         add_ldexeflags -fPIE -pie
3684     ;;
3685     ?*)
3686         die "Unknown toolchain $toolchain"
3687     ;;
3688 esac
3689
3690 test -n "$cross_prefix" && enable cross_compile
3691
3692 if enabled cross_compile; then
3693     test -n "$arch" && test -n "$target_os" ||
3694         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3695 fi
3696
3697 ar_default="${cross_prefix}${ar_default}"
3698 cc_default="${cross_prefix}${cc_default}"
3699 cxx_default="${cross_prefix}${cxx_default}"
3700 nm_default="${cross_prefix}${nm_default}"
3701 pkg_config_default="${cross_prefix}${pkg_config_default}"
3702 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3703     ranlib_default="${cross_prefix}${ranlib_default} -D"
3704 else
3705     ranlib_default="${cross_prefix}${ranlib_default}"
3706 fi
3707 strip_default="${cross_prefix}${strip_default}"
3708 windres_default="${cross_prefix}${windres_default}"
3709
3710 sysinclude_default="${sysroot}/usr/include"
3711
3712 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3713     target_exec target_os yasmexe
3714 enabled cross_compile || host_cc_default=$cc
3715 set_default host_cc
3716
3717 pkg_config_fail_message=""
3718 if ! $pkg_config --version >/dev/null 2>&1; then
3719     warn "$pkg_config not found, library detection may fail."
3720     pkg_config=false
3721 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3722     pkg_config_fail_message="
3723 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3724 fi
3725
3726 if test $doxygen != $doxygen_default && \
3727   ! $doxygen --version >/dev/null 2>&1; then
3728     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3729 fi
3730
3731 exesuf() {
3732     case $1 in
3733         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3734     esac
3735 }
3736
3737 EXESUF=$(exesuf $target_os)
3738 HOSTEXESUF=$(exesuf $host_os)
3739
3740 # set temporary file name
3741 : ${TMPDIR:=$TEMPDIR}
3742 : ${TMPDIR:=$TMP}
3743 : ${TMPDIR:=/tmp}
3744
3745 if [ -n "$tempprefix" ] ; then
3746     mktemp(){
3747         echo $tempprefix.${HOSTNAME}.${UID}
3748     }
3749 elif ! check_cmd mktemp -u XXXXXX; then
3750     # simple replacement for missing mktemp
3751     # NOT SAFE FOR GENERAL USE
3752     mktemp(){
3753         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3754     }
3755 fi
3756
3757 tmpfile(){
3758     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3759         (set -C; exec > $tmp) 2>/dev/null ||
3760         die "Unable to create temporary file in $TMPDIR."
3761     append TMPFILES $tmp
3762     eval $1=$tmp
3763 }
3764
3765 trap 'rm -f -- $TMPFILES' EXIT
3766
3767 tmpfile TMPASM .asm
3768 tmpfile TMPC   .c
3769 tmpfile TMPCPP .cpp
3770 tmpfile TMPE   $EXESUF
3771 tmpfile TMPH   .h
3772 tmpfile TMPM   .m
3773 tmpfile TMPO   .o
3774 tmpfile TMPS   .S
3775 tmpfile TMPSH  .sh
3776 tmpfile TMPV   .ver
3777
3778 unset -f mktemp
3779
3780 chmod +x $TMPE
3781
3782 # make sure we can execute files in $TMPDIR
3783 cat > $TMPSH 2>> $logfile <<EOF
3784 #! /bin/sh
3785 EOF
3786 chmod +x $TMPSH >> $logfile 2>&1
3787 if ! $TMPSH >> $logfile 2>&1; then
3788     cat <<EOF
3789 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3790 variable to another directory and make sure that it is not mounted noexec.
3791 EOF
3792     die "Sanity test failed."
3793 fi
3794
3795 armasm_flags(){
3796     for flag; do
3797         case $flag in
3798             # Filter out MSVC cl.exe options from cflags that shouldn't
3799             # be passed to gas-preprocessor
3800             -M[TD]*)                                            ;;
3801             *)                  echo $flag                      ;;
3802         esac
3803    done
3804 }
3805
3806 ccc_flags(){
3807     for flag; do
3808         case $flag in
3809             -std=c99)           echo -c99                       ;;
3810             -mcpu=*)            echo -arch ${flag#*=}           ;;
3811             -mieee)             echo -ieee                      ;;
3812             -O*|-fast)          echo $flag                      ;;
3813             -fno-math-errno)    echo -assume nomath_errno       ;;
3814             -g)                 echo -g3                        ;;
3815             -Wall)              echo -msg_enable level2         ;;
3816             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3817             -Wl,*)              echo $flag                      ;;
3818             -f*|-W*)                                            ;;
3819             *)                  echo $flag                      ;;
3820         esac
3821    done
3822 }
3823
3824 cparser_flags(){
3825     for flag; do
3826         case $flag in
3827             -Wno-switch)             echo -Wno-switch-enum ;;
3828             -Wno-format-zero-length) ;;
3829             -Wdisabled-optimization) ;;
3830             -Wno-pointer-sign)       echo -Wno-other ;;
3831             *)                       echo $flag ;;
3832         esac
3833     done
3834 }
3835
3836 msvc_common_flags(){
3837     for flag; do
3838         case $flag in
3839             # In addition to specifying certain flags under the compiler
3840             # specific filters, they must be specified here as well or else the
3841             # generic catch all at the bottom will print the original flag.
3842             -Wall)                ;;
3843             -std=c99)             ;;
3844             # Common flags
3845             -fomit-frame-pointer) ;;
3846             -g)                   echo -Z7 ;;
3847             -fno-math-errno)      ;;
3848             -fno-common)          ;;
3849             -fno-signed-zeros)    ;;
3850             -fPIC)                ;;
3851             -mthumb)              ;;
3852             -march=*)             ;;
3853             -lz)                  echo zlib.lib ;;
3854             -lx264)               echo libx264.lib ;;
3855             -lstdc++)             ;;
3856             -l*)                  echo ${flag#-l}.lib ;;
3857             -LARGEADDRESSAWARE)   echo $flag ;;
3858             -L*)                  echo -libpath:${flag#-L} ;;
3859             *)                    echo $flag ;;
3860         esac
3861     done
3862 }
3863
3864 msvc_flags(){
3865     msvc_common_flags "$@"
3866     for flag; do
3867         case $flag in
3868             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3869                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3870                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3871                                        -wd4307 \
3872                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3873         esac
3874     done
3875 }
3876
3877 icl_flags(){
3878     msvc_common_flags "$@"
3879     for flag; do
3880         case $flag in
3881             # Despite what Intel's documentation says -Wall, which is supported
3882             # on Windows, does enable remarks so disable them here.
3883             -Wall)                echo $flag -Qdiag-disable:remark ;;
3884             -std=c99)             echo -Qstd=c99 ;;
3885             -flto)                echo -ipo ;;
3886         esac
3887     done
3888 }
3889
3890 icc_flags(){
3891     for flag; do
3892         case $flag in
3893             -flto)                echo -ipo ;;
3894             *)                    echo $flag ;;
3895         esac
3896     done
3897 }
3898
3899 pgi_flags(){
3900     for flag; do
3901         case $flag in
3902             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3903             -fomit-frame-pointer) echo -Mnoframe ;;
3904             -g)                   echo -gopt ;;
3905             *)                    echo $flag ;;
3906         esac
3907     done
3908 }
3909
3910 suncc_flags(){
3911     for flag; do
3912         case $flag in
3913             -march=*|-mcpu=*)
3914                 case "${flag#*=}" in
3915                     native)                   echo -xtarget=native       ;;
3916                     v9|niagara)               echo -xarch=sparc          ;;
3917                     ultrasparc)               echo -xarch=sparcvis       ;;
3918                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3919                     i586|pentium)             echo -xchip=pentium        ;;
3920                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3921                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3922                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3923                     pentium4*)          echo -xtarget=pentium4           ;;
3924                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3925                     *-sse3)             echo -xarch=sse3                 ;;
3926                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3927                     bonnell)                   echo -xarch=ssse3         ;;
3928                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3929                     westmere)                  echo -xtarget=westmere    ;;
3930                     silvermont)                echo -xarch=sse4_2        ;;
3931                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3932                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3933                                                echo -xarch=avx           ;;
3934                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3935                     btver1)                    echo -xarch=amdsse4a      ;;
3936                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3937                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3938                     k8|opteron|athlon64|athlon-fx)
3939                                                echo -xarch=sse2a         ;;
3940                     athlon*)                   echo -xarch=pentium_proa  ;;
3941                 esac
3942                 ;;
3943             -std=c99)             echo -xc99              ;;
3944             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3945             -fPIC)                echo -KPIC -xcode=pic32 ;;
3946             -W*,*)                echo $flag              ;;
3947             -f*-*|-W*|-mimpure-text)                      ;;
3948             -shared)              echo -G                 ;;
3949             *)                    echo $flag              ;;
3950         esac
3951     done
3952 }
3953
3954 tms470_flags(){
3955     for flag; do
3956         case $flag in
3957             -march=*|-mcpu=*)
3958                 case "${flag#*=}" in
3959                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3960                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3961                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3962                     armv6*|arm11*)          echo -mv=6   ;;
3963                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3964                                             echo -mv=5e  ;;
3965                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3966                 esac
3967                 ;;
3968             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3969             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3970             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3971             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3972             -msoft-float)   echo --float_support=vfplib       ;;
3973             -O[0-3]|-mf=*)  echo $flag                        ;;
3974             -g)             echo -g -mn                       ;;
3975             -pds=*)         echo $flag                        ;;
3976             -D*|-I*)        echo $flag                        ;;
3977             --gcc|--abi=*)  echo $flag                        ;;
3978             -me)            echo $flag                        ;;
3979         esac
3980     done
3981 }
3982
3983 probe_cc(){
3984     pfx=$1
3985     _cc=$2
3986     first=$3
3987
3988     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3989     unset _ld_o _ldflags _ld_lib _ld_path
3990     unset _depflags _DEPCMD _DEPFLAGS
3991     _flags_filter=echo
3992
3993     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3994         true # no-op to avoid reading stdin in following checks
3995     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3996         _type=llvm_gcc
3997         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3998         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3999         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4000         _cflags_speed='-O3'
4001         _cflags_size='-Os'
4002     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4003         _type=gcc
4004         gcc_version=$($_cc --version | head -n1)
4005         gcc_basever=$($_cc -dumpversion)
4006         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4007         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4008         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4009         case $gcc_basever in
4010             2) ;;
4011             2.*) ;;
4012             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4013         esac
4014         if [ "$first" = true ]; then
4015             case $gcc_basever in
4016                 4.2*)
4017                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4018             esac
4019         fi
4020         _cflags_speed='-O3'
4021         _cflags_size='-Os'
4022     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4023         _type=icc
4024         _ident=$($_cc --version | head -n1)
4025         _depflags='-MMD'
4026         _cflags_speed='-O3'
4027         _cflags_size='-Os'
4028         _cflags_noopt='-O1'
4029         _flags_filter=icc_flags
4030     elif $_cc -v 2>&1 | grep -q xlc; then
4031         _type=xlc
4032         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4033         _cflags_speed='-O5'
4034         _cflags_size='-O5 -qcompact'
4035     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4036         _type=ccc
4037         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4038         _DEPFLAGS='-M'
4039         _cflags_speed='-fast'
4040         _cflags_size='-O1'
4041         _flags_filter=ccc_flags
4042     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4043         test -d "$sysroot" || die "No valid sysroot specified."
4044         _type=armcc
4045         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4046         armcc_conf="$PWD/armcc.conf"
4047         $_cc --arm_linux_configure                 \
4048              --arm_linux_config_file="$armcc_conf" \
4049              --configure_sysroot="$sysroot"        \
4050              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4051              die "Error creating armcc configuration file."
4052         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4053         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4054         as_default="${cross_prefix}gcc"
4055         _depflags='-MMD'
4056         _cflags_speed='-O3'
4057         _cflags_size='-Os'
4058     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4059         _type=tms470
4060         _ident=$($_cc -version | head -n1 | tr -s ' ')
4061         _flags='--gcc --abi=eabi -me'
4062         _cc_e='-ppl -fe=$@'
4063         _cc_o='-fe=$@'
4064         _depflags='-ppa -ppd=$(@:.o=.d)'
4065         _cflags_speed='-O3 -mf=5'
4066         _cflags_size='-O3 -mf=2'
4067         _flags_filter=tms470_flags
4068     elif $_cc -v 2>&1 | grep -q clang; then
4069         _type=clang
4070         _ident=$($_cc --version 2>/dev/null | head -n1)
4071         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4072         _cflags_speed='-O3'
4073         _cflags_size='-Oz'
4074     elif $_cc -V 2>&1 | grep -q Sun; then
4075         _type=suncc
4076         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4077         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4078         _DEPFLAGS='-xM1 -xc99'
4079         _ldflags='-std=c99'
4080         _cflags_speed='-O5'
4081         _cflags_size='-O5 -xspace'
4082         _flags_filter=suncc_flags
4083     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4084         _type=pathscale
4085         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4086         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4087         _cflags_speed='-O2'
4088         _cflags_size='-Os'
4089         _flags_filter='filter_out -Wdisabled-optimization'
4090     elif $_cc -v 2>&1 | grep -q Open64; then
4091         _type=open64
4092         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4093         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4094         _cflags_speed='-O2'
4095         _cflags_size='-Os'
4096         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4097     elif $_cc -V 2>&1 | grep -q Portland; then
4098         _type=pgi
4099         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4100         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4101         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4102         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4103         _cflags_noopt="-O"
4104         _flags_filter=pgi_flags
4105     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4106         _type=armasm
4107         _ident=$($_cc | head -n1)
4108         # 4509: "This form of conditional instruction is deprecated"
4109         _flags="-nologo -ignore 4509"
4110         _flags_filter=armasm_flags
4111     elif $_cc 2>&1 | grep -q Intel; then
4112         _type=icl
4113         _ident=$($_cc 2>&1 | head -n1)
4114         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4115         # Not only is O3 broken on 13.x+ but it is slower on all previous
4116         # versions (tested) as well.
4117         _cflags_speed="-O2"
4118         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4119         if $_cc 2>&1 | grep -q Linker; then
4120             _ld_o='-out:$@'
4121         else
4122             _ld_o='-Fe$@'
4123         fi
4124         _cc_o='-Fo$@'
4125         _cc_e='-P'
4126         _flags_filter=icl_flags
4127         _ld_lib='lib%.a'
4128         _ld_path='-libpath:'
4129         # -Qdiag-error to make icl error when seeing certain unknown arguments
4130         _flags='-nologo -Qdiag-error:4044,10157'
4131         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4132         # with MSVC which enables it by default.
4133         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4134         disable stripping
4135     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4136         # lld can emulate multiple different linkers; in ms link.exe mode,
4137         # the -? parameter gives the help output which contains an identifyable
4138         # string, while it gives an error in other modes.
4139         _type=lld-link
4140         # The link.exe mode doesn't have a switch for getting the version,
4141         # but we can force it back to gnu mode and get the version from there.
4142         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4143         _ld_o='-out:$@'
4144         _flags_filter=msvc_flags
4145         _ld_lib='lib%.a'
4146         _ld_path='-libpath:'
4147     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4148         _type=msvc
4149         _ident=$($_cc 2>&1 | head -n1)
4150         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4151         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4152         _cflags_speed="-O2"
4153         _cflags_size="-O1"
4154         _cflags_noopt="-O1"
4155         if $_cc -nologo- 2>&1 | grep -q Linker; then
4156             _ld_o='-out:$@'
4157         else
4158             _ld_o='-Fe$@'
4159         fi
4160         _cc_o='-Fo$@'
4161         _cc_e='-P -Fi$@'
4162         _flags_filter=msvc_flags
4163         _ld_lib='lib%.a'
4164         _ld_path='-libpath:'
4165         _flags='-nologo'
4166         disable stripping
4167     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4168         _type=cparser
4169         _ident=$($_cc --version | head -n1)
4170         _depflags='-MMD'
4171         _cflags_speed='-O4'
4172         _cflags_size='-O2'
4173         _flags_filter=cparser_flags
4174     fi
4175
4176     eval ${pfx}_type=\$_type
4177     eval ${pfx}_ident=\$_ident
4178 }
4179
4180 set_ccvars(){
4181     eval ${1}_C=\${_cc_c-\${${1}_C}}
4182     eval ${1}_E=\${_cc_e-\${${1}_E}}
4183     eval ${1}_O=\${_cc_o-\${${1}_O}}
4184
4185     if [ -n "$_depflags" ]; then
4186         eval ${1}_DEPFLAGS=\$_depflags
4187     else
4188         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4189         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4190         eval DEP${1}FLAGS=\$_flags
4191     fi
4192 }
4193
4194 probe_cc cc "$cc" "true"
4195 cflags_filter=$_flags_filter
4196 cflags_speed=$_cflags_speed
4197 cflags_size=$_cflags_size
4198 cflags_noopt=$_cflags_noopt
4199 add_cflags $_flags $_cflags
4200 cc_ldflags=$_ldflags
4201 set_ccvars CC
4202 set_ccvars CXX
4203
4204 probe_cc hostcc "$host_cc"
4205 host_cflags_filter=$_flags_filter
4206 add_host_cflags  $_flags $_cflags
4207 set_ccvars HOSTCC
4208
4209 test -n "$cc_type" && enable $cc_type ||
4210     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4211
4212 : ${as_default:=$cc}
4213 : ${objcc_default:=$cc}
4214 : ${dep_cc_default:=$cc}
4215 : ${ld_default:=$cc}
4216 : ${host_ld_default:=$host_cc}
4217 set_default ar as objcc dep_cc ld ln_s host_ld windres
4218
4219 probe_cc as "$as"
4220 asflags_filter=$_flags_filter
4221 add_asflags $_flags $_cflags
4222 set_ccvars AS
4223
4224 probe_cc objcc "$objcc"
4225 objcflags_filter=$_flags_filter
4226 add_objcflags $_flags $_cflags
4227 set_ccvars OBJC
4228
4229 probe_cc ld "$ld"
4230 ldflags_filter=$_flags_filter
4231 add_ldflags $_flags $_ldflags
4232 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4233 LD_O=${_ld_o-$LD_O}
4234 LD_LIB=${_ld_lib-$LD_LIB}
4235 LD_PATH=${_ld_path-$LD_PATH}
4236
4237 probe_cc hostld "$host_ld"
4238 host_ldflags_filter=$_flags_filter
4239 add_host_ldflags $_flags $_ldflags
4240 HOSTLD_O=${_ld_o-$HOSTLD_O}
4241
4242 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4243     probe_cc depcc "$dep_cc"
4244     CCDEP=${_DEPCMD:-$DEPCMD}
4245     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4246     DEPCCFLAGS=$_flags
4247 fi
4248
4249 if $ar 2>&1 | grep -q Microsoft; then
4250     arflags="-nologo"
4251     ar_o='-out:$@'
4252 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4253     arflags="rq"
4254     ar_o='$@'
4255 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4256     arflags='-Xany -r -c'
4257     ar_o='$@'
4258 elif $ar 2>&1 | grep -q "\[D\] "; then
4259     arflags="rcD"
4260     ar_o='$@'
4261 else
4262     arflags="rc"
4263     ar_o='$@'
4264 fi
4265
4266 add_cflags $extra_cflags
4267 add_cxxflags $extra_cxxflags
4268 add_objcflags $extra_objcflags
4269 add_asflags $extra_cflags
4270
4271 if test -n "$sysroot"; then
4272     case "$cc_type" in
4273         gcc|llvm_gcc|clang)
4274             add_cppflags --sysroot="$sysroot"
4275             add_ldflags --sysroot="$sysroot"
4276 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4277             add_cppflags -isysroot "$sysroot"
4278             add_ldflags -isysroot "$sysroot"
4279         ;;
4280         tms470)
4281             add_cppflags -I"$sysinclude"
4282             add_ldflags  --sysroot="$sysroot"
4283         ;;
4284     esac
4285 fi
4286
4287 if test "$cpu" = host; then
4288     enabled cross_compile &&
4289         die "--cpu=host makes no sense when cross-compiling."
4290
4291     case "$cc_type" in
4292         gcc|llvm_gcc)
4293             check_native(){
4294                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4295                 sed -n "/cc1.*$1=/{
4296                             s/.*$1=\\([^ ]*\\).*/\\1/
4297                             p
4298                             q
4299                         }" $TMPE
4300             }
4301             cpu=$(check_native -march || check_native -mcpu)
4302         ;;
4303         clang)
4304             check_native(){
4305                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4306                 sed -n "/cc1.*-target-cpu /{
4307                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4308                             p
4309                             q
4310                         }" $TMPE
4311             }
4312             cpu=$(check_native -march)
4313         ;;
4314     esac
4315
4316     test "${cpu:-host}" = host &&
4317         die "--cpu=host not supported with compiler $cc"
4318 fi
4319
4320 # Deal with common $arch aliases
4321 case "$arch" in
4322     aarch64|arm64)
4323         arch="aarch64"
4324     ;;
4325     arm*|iPad*|iPhone*)
4326         arch="arm"
4327     ;;
4328     mips*|IP*)
4329         case "$arch" in
4330         *el)
4331             add_cppflags -EL
4332             add_ldflags -EL
4333         ;;
4334         *eb)
4335             add_cppflags -EB
4336             add_ldflags -EB
4337         ;;
4338         esac
4339         arch="mips"
4340     ;;
4341     parisc*|hppa*)
4342         arch="parisc"
4343     ;;
4344     "Power Macintosh"|ppc*|powerpc*)
4345         arch="ppc"
4346     ;;
4347     s390|s390x)
4348         arch="s390"
4349     ;;
4350     sh4|sh)
4351         arch="sh4"
4352     ;;
4353     sun4*|sparc*)
4354         arch="sparc"
4355     ;;
4356     tilegx|tile-gx)
4357         arch="tilegx"
4358     ;;
4359     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4360         arch="x86"
4361     ;;
4362 esac
4363
4364 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4365 enable $arch
4366
4367 # Add processor-specific flags
4368 if enabled aarch64; then
4369
4370     case $cpu in
4371         armv*)
4372             cpuflags="-march=$cpu"
4373         ;;
4374         *)
4375             cpuflags="-mcpu=$cpu"
4376         ;;
4377     esac
4378
4379 elif enabled alpha; then
4380
4381     cpuflags="-mcpu=$cpu"
4382
4383 elif enabled arm; then
4384
4385     check_arm_arch() {
4386         check_cpp_condition stddef.h \
4387             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4388             $cpuflags
4389     }
4390
4391     probe_arm_arch() {
4392         if   check_arm_arch 4;        then echo armv4
4393         elif check_arm_arch 4T;       then echo armv4t
4394         elif check_arm_arch 5;        then echo armv5
4395         elif check_arm_arch 5E;       then echo armv5e
4396         elif check_arm_arch 5T;       then echo armv5t
4397         elif check_arm_arch 5TE;      then echo armv5te
4398         elif check_arm_arch 5TEJ;     then echo armv5te
4399         elif check_arm_arch 6;        then echo armv6
4400         elif check_arm_arch 6J;       then echo armv6j
4401         elif check_arm_arch 6K;       then echo armv6k
4402         elif check_arm_arch 6Z;       then echo armv6z
4403         elif check_arm_arch 6ZK;      then echo armv6zk
4404         elif check_arm_arch 6T2;      then echo armv6t2
4405         elif check_arm_arch 7;        then echo armv7
4406         elif check_arm_arch 7A  7_A;  then echo armv7-a
4407         elif check_arm_arch 7S;       then echo armv7-a
4408         elif check_arm_arch 7R  7_R;  then echo armv7-r
4409         elif check_arm_arch 7M  7_M;  then echo armv7-m
4410         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4411         elif check_arm_arch 8A  8_A;  then echo armv8-a
4412         fi
4413     }
4414
4415     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4416
4417     case $cpu in
4418         armv*)
4419             cpuflags="-march=$cpu"
4420             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4421         ;;
4422         *)
4423             cpuflags="-mcpu=$cpu"
4424             case $cpu in
4425                 cortex-a*)                               subarch=armv7a  ;;
4426                 cortex-r*)                               subarch=armv7r  ;;
4427                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4428                 arm11*)                                  subarch=armv6   ;;
4429                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4430                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4431                 *)                             subarch=$(probe_arm_arch) ;;
4432             esac
4433         ;;
4434     esac
4435
4436     case "$subarch" in
4437         armv5t*)    enable fast_clz                ;;
4438         armv[6-8]*)
4439             enable fast_clz
4440             disabled fast_unaligned || enable fast_unaligned
4441             ;;
4442     esac
4443
4444 elif enabled avr32; then
4445
4446     case $cpu in
4447         ap7[02]0[0-2])
4448             subarch="avr32_ap"
4449             cpuflags="-mpart=$cpu"
4450         ;;
4451         ap)
4452             subarch="avr32_ap"
4453             cpuflags="-march=$cpu"
4454         ;;
4455         uc3[ab]*)
4456             subarch="avr32_uc"
4457             cpuflags="-mcpu=$cpu"
4458         ;;
4459         uc)
4460             subarch="avr32_uc"
4461             cpuflags="-march=$cpu"
4462         ;;
4463     esac
4464
4465 elif enabled bfin; then
4466
4467     cpuflags="-mcpu=$cpu"
4468
4469 elif enabled mips; then
4470
4471     cpuflags="-march=$cpu"
4472
4473     if [ "$cpu" != "generic" ]; then
4474         disable mips32r2
4475         disable mips32r5
4476         disable mips64r2
4477         disable mips32r6
4478         disable mips64r6
4479         disable loongson2
4480         disable loongson3
4481
4482         case $cpu in
4483             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4484                 enable mips32r2
4485                 disable msa
4486             ;;
4487             p5600|i6400|p6600)
4488                 disable mipsdsp
4489                 disable mipsdspr2
4490             ;;
4491             loongson*)
4492                 enable loongson2
4493                 enable loongson3
4494                 enable local_aligned_8 local_aligned_16 local_aligned_32
4495                 enable simd_align_16
4496                 enable fast_64bit
4497                 enable fast_clz
4498                 enable fast_cmov
4499                 enable fast_unaligned
4500                 disable aligned_stack
4501                 disable mipsfpu
4502                 disable mipsdsp
4503                 disable mipsdspr2
4504                 case $cpu in
4505                     loongson3*)
4506                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4507                     ;;
4508                     loongson2e)
4509                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4510                     ;;
4511                     loongson2f)
4512                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4513                     ;;
4514                 esac
4515             ;;
4516             *)
4517                 # Unknown CPU. Disable everything.
4518                 warn "unknown CPU. Disabling all MIPS optimizations."
4519                 disable mipsfpu
4520                 disable mipsdsp
4521                 disable mipsdspr2
4522                 disable msa
4523                 disable mmi
4524             ;;
4525         esac
4526
4527         case $cpu in
4528             24kc)
4529                 disable mipsfpu
4530                 disable mipsdsp
4531                 disable mipsdspr2
4532             ;;
4533             24kf*)
4534                 disable mipsdsp
4535                 disable mipsdspr2
4536             ;;
4537             24kec|34kc|1004kc)
4538                 disable mipsfpu
4539                 disable mipsdspr2
4540             ;;
4541             24kef*|34kf*|1004kf*)
4542                 disable mipsdspr2
4543             ;;
4544             74kc)
4545                 disable mipsfpu
4546             ;;
4547             p5600)
4548                 enable mips32r5
4549                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4550             ;;
4551             i6400)
4552                 enable mips64r6
4553                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4554             ;;
4555             p6600)
4556                 enable mips64r6
4557                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4558             ;;
4559         esac
4560     else
4561         # We do not disable anything. Is up to the user to disable the unwanted features.
4562         warn 'generic cpu selected'
4563     fi
4564
4565 elif enabled ppc; then
4566
4567     disable ldbrx
4568
4569     case $(tolower $cpu) in
4570         601|ppc601|powerpc601)
4571             cpuflags="-mcpu=601"
4572             disable altivec
4573         ;;
4574         603*|ppc603*|powerpc603*)
4575             cpuflags="-mcpu=603"
4576             disable altivec
4577         ;;
4578         604*|ppc604*|powerpc604*)
4579             cpuflags="-mcpu=604"
4580             disable altivec
4581         ;;
4582         g3|75*|ppc75*|powerpc75*)
4583             cpuflags="-mcpu=750"
4584             disable altivec
4585         ;;
4586         g4|745*|ppc745*|powerpc745*)
4587             cpuflags="-mcpu=7450"
4588             disable vsx
4589         ;;
4590         74*|ppc74*|powerpc74*)
4591             cpuflags="-mcpu=7400"
4592             disable vsx
4593         ;;
4594         g5|970|ppc970|powerpc970)
4595             cpuflags="-mcpu=970"
4596             disable vsx
4597         ;;
4598         power[3-6]*)
4599             cpuflags="-mcpu=$cpu"
4600             disable vsx
4601         ;;
4602         power[7-8]*)
4603             cpuflags="-mcpu=$cpu"
4604         ;;
4605         cell)
4606             cpuflags="-mcpu=cell"
4607             enable ldbrx
4608             disable vsx
4609         ;;
4610         e500mc)
4611             cpuflags="-mcpu=e500mc"
4612             disable altivec
4613         ;;
4614         e500v2)
4615             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4616             disable altivec
4617             disable dcbzl
4618         ;;
4619         e500)
4620             cpuflags="-mcpu=8540 -mhard-float"
4621             disable altivec
4622             disable dcbzl
4623         ;;
4624     esac
4625
4626 elif enabled sparc; then
4627
4628     case $cpu in
4629         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4630             cpuflags="-mcpu=$cpu"
4631         ;;
4632         ultrasparc*|niagara[234])
4633             cpuflags="-mcpu=$cpu"
4634         ;;
4635     esac
4636
4637 elif enabled x86; then
4638
4639     case $cpu in
4640         i[345]86|pentium)
4641             cpuflags="-march=$cpu"
4642             disable i686
4643             disable mmx
4644         ;;
4645         # targets that do NOT support nopl and conditional mov (cmov)
4646         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4647             cpuflags="-march=$cpu"
4648             disable i686
4649         ;;
4650         # targets that do support nopl and conditional mov (cmov)
4651         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4652         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4653         |amdfam10|barcelona|b[dt]ver*|znver*)
4654             cpuflags="-march=$cpu"
4655             enable i686
4656             enable fast_cmov
4657         ;;
4658         # targets that do support conditional mov but on which it's slow
4659         pentium4|pentium4m|prescott|nocona)
4660             cpuflags="-march=$cpu"
4661             enable i686
4662             disable fast_cmov
4663         ;;
4664     esac
4665
4666 fi
4667
4668 if [ "$cpu" != generic ]; then
4669     add_cflags  $cpuflags
4670     add_asflags $cpuflags
4671     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4672 fi
4673
4674 # compiler sanity check
4675 check_exec <<EOF
4676 int main(void){ return 0; }
4677 EOF
4678 if test "$?" != 0; then
4679     echo "$cc is unable to create an executable file."
4680     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4681         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4682         echo "Only do this if you know what cross compiling means."
4683     fi
4684     die "C compiler test failed."
4685 fi
4686
4687 add_cppflags -D_ISOC99_SOURCE
4688 add_cxxflags -D__STDC_CONSTANT_MACROS
4689 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4690
4691 # some compilers silently accept -std=c11, so we also need to check that the
4692 # version macro is defined properly
4693 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4694     add_cflags -std=c11
4695 else
4696     check_cflags -std=c99
4697 fi
4698
4699 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4700 #include <stdlib.h>
4701 EOF
4702 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4703 #include <stdlib.h>
4704 EOF
4705
4706 add_host_cppflags -D_ISOC99_SOURCE
4707 check_host_cflags -std=c99
4708 check_host_cflags -Wall
4709 check_host_cflags -O3
4710
4711 check_64bit(){
4712     arch32=$1
4713     arch64=$2
4714     expr=$3
4715     check_code cc "" "int test[2*($expr) - 1]" &&
4716         subarch=$arch64 || subarch=$arch32
4717 }
4718
4719 case "$arch" in
4720     aarch64|alpha|ia64)
4721         spic=$shared
4722     ;;
4723     mips)
4724         check_64bit mips mips64 '_MIPS_SIM > 1'
4725         spic=$shared
4726     ;;
4727     parisc)
4728         check_64bit parisc parisc64 'sizeof(void *) > 4'
4729         spic=$shared
4730     ;;
4731     ppc)
4732         check_64bit ppc ppc64 'sizeof(void *) > 4'
4733         spic=$shared
4734     ;;
4735     s390)
4736         check_64bit s390 s390x 'sizeof(void *) > 4'
4737         spic=$shared
4738     ;;
4739     sparc)
4740         check_64bit sparc sparc64 'sizeof(void *) > 4'
4741         spic=$shared
4742     ;;
4743     x86)
4744         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4745         # Treat x32 as x64 for now. Note it also needs spic=$shared
4746         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4747             subarch=x86_64
4748         if test "$subarch" = "x86_64"; then
4749             spic=$shared
4750         fi
4751     ;;
4752     ppc)
4753         check_cc <<EOF && subarch="ppc64"
4754         int test[(int)sizeof(char*) - 7];
4755 EOF
4756     ;;
4757 esac
4758
4759 enable $subarch
4760 enabled spic && enable_weak pic
4761
4762 # OS specific
4763 case $target_os in
4764     aix)
4765         SHFLAGS=-shared
4766         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4767         enabled shared && add_ldflags -Wl,-brtl
4768         ;;
4769     android)
4770         disable symver
4771         enable section_data_rel_ro
4772         SLIB_INSTALL_NAME='$(SLIBNAME)'
4773         SLIB_INSTALL_LINKS=
4774         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4775         ;;
4776     haiku)
4777         prefix_default="/boot/common"
4778         network_extralibs="-lnetwork"
4779         host_extralibs=
4780         ;;
4781     sunos)
4782         SHFLAGS='-shared -Wl,-h,$$(@F)'
4783         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4784         network_extralibs="-lsocket -lnsl"
4785         add_cppflags -D__EXTENSIONS__
4786         # When using suncc to build, the Solaris linker will mark
4787         # an executable with each instruction set encountered by
4788         # the Solaris assembler.  As our libraries contain their own
4789         # guards for processor-specific code, instead suppress
4790         # generation of the HWCAPS ELF section on Solaris x86 only.
4791         enabled_all suncc x86 &&
4792             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4793             add_ldflags -Wl,-M,mapfile
4794         nm_default='nm -P -g'
4795         version_script='-M'
4796         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4797         ;;
4798     netbsd)
4799         disable symver
4800         oss_indev_extralibs="-lossaudio"
4801         oss_outdev_extralibs="-lossaudio"
4802         enabled gcc || check_ldflags -Wl,-zmuldefs
4803         ;;
4804     openbsd|bitrig)
4805         disable symver
4806         SHFLAGS='-shared'
4807         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4808         SLIB_INSTALL_LINKS=
4809         oss_indev_extralibs="-lossaudio"
4810         oss_outdev_extralibs="-lossaudio"
4811         ;;
4812     dragonfly)
4813         disable symver
4814         ;;
4815     freebsd)
4816         ;;
4817     bsd/os)
4818         add_extralibs -lpoll -lgnugetopt
4819         strip="strip -d"
4820         ;;
4821     darwin)
4822         enabled ppc && add_asflags -force_cpusubtype_ALL
4823         install_name_dir_default='$(SHLIBDIR)'
4824         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4825         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4826         strip="${strip} -x"
4827         add_ldflags -Wl,-dynamic,-search_paths_first
4828         SLIBSUF=".dylib"
4829         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4830         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4831         objformat="macho"
4832         enabled x86_64 && objformat="macho64"
4833         enabled_any pic shared x86_64 ||
4834             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4835         check_header dispatch/dispatch.h &&
4836             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4837         version_script='-exported_symbols_list'
4838         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4839         ;;
4840     msys*)
4841         die "Native MSYS builds are discouraged, please use the MINGW environment."
4842         ;;
4843     mingw32*|mingw64*)
4844         if test $target_os = "mingw32ce"; then
4845             disable network
4846         else
4847             target_os=mingw32
4848         fi
4849         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4850         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4851         LIBTARGET=i386
4852         if enabled x86_64; then
4853             LIBTARGET="i386:x86-64"
4854         elif enabled arm; then
4855             LIBTARGET=arm-wince
4856         fi
4857         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4858         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4859         shlibdir_default="$bindir_default"
4860         SLIBPREF=""
4861         SLIBSUF=".dll"
4862         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4863         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4864         dlltool="${cross_prefix}dlltool"
4865         if check_cmd lib.exe -list; then
4866             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4867             if enabled x86_64; then
4868                 LIBTARGET=x64
4869             fi
4870         elif check_cmd $dlltool --version; then
4871             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4872         fi
4873         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4874         SLIB_INSTALL_LINKS=
4875         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4876         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4877         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4878         objformat="win32"
4879         ranlib=:
4880         enable dos_paths
4881         check_ldflags -Wl,--nxcompat,--dynamicbase
4882         # Lets work around some stupidity in binutils.
4883         # ld will strip relocations from executables even though we need them
4884         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4885         # however ld then forgets what the entry point should be (oops) so we
4886         # have to manually (re)set it.
4887         if enabled x86_32; then
4888             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4889         elif enabled x86_64; then
4890             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4891             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4892             # Set image base >4GB for extra entropy with HEASLR
4893             add_ldexeflags -Wl,--image-base,0x140000000
4894             append SHFLAGS -Wl,--image-base,0x180000000
4895         fi
4896         ;;
4897     win32|win64)
4898         disable symver
4899         if enabled shared; then
4900   &nb