c510ee4921d0ee176a21f2152f2e108aa85051af
[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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92                            use rpath when linking programs [USE WITH CARE]
93
94 Licensing options:
95   --enable-gpl             allow use of GPL code, the resulting libs
96                            and binaries will be under GPL [no]
97   --enable-version3        upgrade (L)GPL to version 3 [no]
98   --enable-nonfree         allow use of nonfree code, the resulting libs
99                            and binaries will be unredistributable [no]
100
101 Configuration options:
102   --disable-static         do not build static libraries [no]
103   --enable-shared          build shared libraries [no]
104   --enable-small           optimize for size instead of speed
105   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
106   --enable-gray            enable full grayscale support (slower color)
107   --disable-swscale-alpha  disable alpha channel support in swscale
108   --disable-all            disable building components, libraries and programs
109   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
110   --enable-raise-major     increase major version numbers in sonames [no]
111
112 Program options:
113   --disable-programs       do not build command line programs
114   --disable-ffmpeg         disable ffmpeg build
115   --disable-ffplay         disable ffplay build
116   --disable-ffprobe        disable ffprobe build
117   --disable-ffserver       disable ffserver build
118
119 Documentation options:
120   --disable-doc            do not build documentation
121   --disable-htmlpages      do not build HTML documentation pages
122   --disable-manpages       do not build man documentation pages
123   --disable-podpages       do not build POD documentation pages
124   --disable-txtpages       do not build text documentation pages
125
126 Component options:
127   --disable-avdevice       disable libavdevice build
128   --disable-avcodec        disable libavcodec build
129   --disable-avformat       disable libavformat build
130   --disable-avutil         disable libavutil build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [auto]
137   --disable-w32threads     disable Win32 threads [auto]
138   --disable-os2threads     disable OS/2 threads [auto]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Hardware accelerators:
152   --disable-dxva2          disable DXVA2 code [autodetect]
153   --disable-vaapi          disable VAAPI code [autodetect]
154   --disable-vda            disable VDA code [autodetect]
155   --disable-vdpau          disable VDPAU code [autodetect]
156
157 Individual component options:
158   --disable-everything     disable all components listed below
159   --disable-encoder=NAME   disable encoder NAME
160   --enable-encoder=NAME    enable encoder NAME
161   --disable-encoders       disable all encoders
162   --disable-decoder=NAME   disable decoder NAME
163   --enable-decoder=NAME    enable decoder NAME
164   --disable-decoders       disable all decoders
165   --disable-hwaccel=NAME   disable hwaccel NAME
166   --enable-hwaccel=NAME    enable hwaccel NAME
167   --disable-hwaccels       disable all hwaccels
168   --disable-muxer=NAME     disable muxer NAME
169   --enable-muxer=NAME      enable muxer NAME
170   --disable-muxers         disable all muxers
171   --disable-demuxer=NAME   disable demuxer NAME
172   --enable-demuxer=NAME    enable demuxer NAME
173   --disable-demuxers       disable all demuxers
174   --enable-parser=NAME     enable parser NAME
175   --disable-parser=NAME    disable parser NAME
176   --disable-parsers        disable all parsers
177   --enable-bsf=NAME        enable bitstream filter NAME
178   --disable-bsf=NAME       disable bitstream filter NAME
179   --disable-bsfs           disable all bitstream filters
180   --enable-protocol=NAME   enable protocol NAME
181   --disable-protocol=NAME  disable protocol NAME
182   --disable-protocols      disable all protocols
183   --enable-indev=NAME      enable input device NAME
184   --disable-indev=NAME     disable input device NAME
185   --disable-indevs         disable input devices
186   --enable-outdev=NAME     enable output device NAME
187   --disable-outdev=NAME    disable output device NAME
188   --disable-outdevs        disable output devices
189   --disable-devices        disable all devices
190   --enable-filter=NAME     enable filter NAME
191   --disable-filter=NAME    disable filter NAME
192   --disable-filters        disable all filters
193
194 External library support:
195   --enable-avisynth        enable reading of AviSynth script files [no]
196   --disable-bzlib          disable bzlib [autodetect]
197   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
198   --enable-frei0r          enable frei0r video filtering [no]
199   --enable-gnutls          enable gnutls, needed for https support
200                            if openssl is not used [no]
201   --disable-iconv          disable iconv [autodetect]
202   --enable-ladspa          enable LADSPA audio filtering [no]
203   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
204   --enable-libass          enable libass subtitles rendering,
205                            needed for subtitles and ass filter [no]
206   --enable-libbluray       enable BluRay reading using libbluray [no]
207   --enable-libbs2b         enable bs2b DSP library [no]
208   --enable-libcaca         enable textual display using libcaca [no]
209   --enable-libcelt         enable CELT decoding via libcelt [no]
210   --enable-libcdio         enable audio CD grabbing with libcdio [no]
211   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
212                            and libraw1394 [no]
213   --enable-libfaac         enable AAC encoding via libfaac [no]
214   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
215   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
216   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
217   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
218   --enable-libgme          enable Game Music Emu via libgme [no]
219   --enable-libgsm          enable GSM de/encoding via libgsm [no]
220   --enable-libiec61883     enable iec61883 via libiec61883 [no]
221   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
222   --enable-libmodplug      enable ModPlug via libmodplug [no]
223   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
224   --enable-libnut          enable NUT (de)muxing via libnut,
225                            native (de)muxer exists [no]
226   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
227   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
228   --enable-libopencv       enable video filtering via libopencv [no]
229   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
230   --enable-libopus         enable Opus de/encoding via libopus [no]
231   --enable-libpulse        enable Pulseaudio input via libpulse [no]
232   --enable-libquvi         enable quvi input via libquvi [no]
233   --enable-librtmp         enable RTMP[E] support via librtmp [no]
234   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
235   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
236   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
237   --enable-libsoxr         enable Include libsoxr resampling [no]
238   --enable-libspeex        enable Speex de/encoding via libspeex [no]
239   --enable-libssh          enable SFTP protocol via libssh [no]
240   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
241   --enable-libtheora       enable Theora encoding via libtheora [no]
242   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
243   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
244   --enable-libv4l2         enable libv4l2/v4l-utils [no]
245   --enable-libvidstab      enable video stabilization using vid.stab [no]
246   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
247   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
248   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
249                            native implementation exists [no]
250   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
251   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
252   --enable-libwebp         enable WebP encoding via libwebp [no]
253   --enable-libx264         enable H.264 encoding via x264 [no]
254   --enable-libx265         enable HEVC encoding via x265 [no]
255   --enable-libxavs         enable AVS encoding via xavs [no]
256   --enable-libxcb          enable X11 grabbing using XCB [auto]
257   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
258   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
259   --enable-libxcb-shape    enable X11 grabbing shape rendering [auto]
260   --enable-libxvid         enable Xvid encoding via xvidcore,
261                            native MPEG-4/Xvid encoder exists [no]
262   --enable-libzmq          enable message passing via libzmq [no]
263   --enable-libzvbi         enable teletext support via libzvbi [no]
264   --disable-lzma           disable lzma [autodetect]
265   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
266   --enable-openal          enable OpenAL 1.1 capture support [no]
267   --enable-opencl          enable OpenCL code
268   --enable-opengl          enable OpenGL rendering [no]
269   --enable-openssl         enable openssl, needed for https support
270                            if gnutls is not used [no]
271   --disable-sdl            disable sdl [autodetect]
272   --enable-x11grab         enable X11 grabbing (legacy) [no]
273   --disable-xlib           disable xlib [autodetect]
274   --disable-zlib           disable zlib [autodetect]
275
276 Toolchain options:
277   --arch=ARCH              select architecture [$arch]
278   --cpu=CPU                select the minimum required CPU (affects
279                            instruction selection, may crash on older CPUs)
280   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
281   --progs-suffix=SUFFIX    program name suffix []
282   --enable-cross-compile   assume a cross-compiler is used
283   --sysroot=PATH           root of cross-build tree
284   --sysinclude=PATH        location of cross-build system headers
285   --target-os=OS           compiler targets OS [$target_os]
286   --target-exec=CMD        command to run executables on target
287   --target-path=DIR        path to view of build directory on target
288   --target-samples=DIR     path to samples directory on target
289   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
290   --toolchain=NAME         set tool defaults according to NAME
291   --nm=NM                  use nm tool NM [$nm_default]
292   --ar=AR                  use archive tool AR [$ar_default]
293   --as=AS                  use assembler AS [$as_default]
294   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
295   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
296   --cc=CC                  use C compiler CC [$cc_default]
297   --cxx=CXX                use C compiler CXX [$cxx_default]
298   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
299   --ld=LD                  use linker LD [$ld_default]
300   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
301   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
302   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
303   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
304   --host-cc=HOSTCC         use host C compiler HOSTCC
305   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
306   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
307   --host-ld=HOSTLD         use host linker HOSTLD
308   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
309   --host-libs=HLIBS        use libs HLIBS when linking for host
310   --host-os=OS             compiler host OS [$target_os]
311   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
312   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
313   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
314   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
315   --extra-libs=ELIBS       add ELIBS [$ELIBS]
316   --extra-version=STRING   version string suffix []
317   --optflags=OPTFLAGS      override optimization-related compiler flags
318   --build-suffix=SUFFIX    library name suffix []
319   --enable-pic             build position-independent code
320   --enable-thumb           compile for Thumb instruction set
321   --enable-lto             use link-time optimization
322
323 Advanced options (experts only):
324   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
325   --disable-symver         disable symbol versioning
326   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
327   --disable-safe-bitstream-reader
328                            disable buffer boundary checking in bitreaders
329                            (faster, but may crash)
330   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
331   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
332
333 Optimization options (experts only):
334   --disable-asm            disable all assembly optimizations
335   --disable-altivec        disable AltiVec optimizations
336   --disable-amd3dnow       disable 3DNow! optimizations
337   --disable-amd3dnowext    disable 3DNow! extended optimizations
338   --disable-mmx            disable MMX optimizations
339   --disable-mmxext         disable MMXEXT optimizations
340   --disable-sse            disable SSE optimizations
341   --disable-sse2           disable SSE2 optimizations
342   --disable-sse3           disable SSE3 optimizations
343   --disable-ssse3          disable SSSE3 optimizations
344   --disable-sse4           disable SSE4 optimizations
345   --disable-sse42          disable SSE4.2 optimizations
346   --disable-avx            disable AVX optimizations
347   --disable-xop            disable XOP optimizations
348   --disable-fma3           disable FMA3 optimizations
349   --disable-fma4           disable FMA4 optimizations
350   --disable-avx2           disable AVX2 optimizations
351   --disable-armv5te        disable armv5te optimizations
352   --disable-armv6          disable armv6 optimizations
353   --disable-armv6t2        disable armv6t2 optimizations
354   --disable-vfp            disable VFP optimizations
355   --disable-neon           disable NEON optimizations
356   --disable-inline-asm     disable use of inline assembly
357   --disable-yasm           disable use of nasm/yasm assembly
358   --disable-mips32r2       disable MIPS32R2 optimizations
359   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
360   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
361   --disable-mipsfpu        disable floating point MIPS optimizations
362   --disable-fast-unaligned consider unaligned accesses slow
363
364 Developer options (useful when working on FFmpeg itself):
365   --disable-debug          disable debugging symbols
366   --enable-debug=LEVEL     set the debug level [$debuglevel]
367   --disable-optimizations  disable compiler optimizations
368   --enable-extra-warnings  enable more compiler warnings
369   --disable-stripping      disable stripping of executables and shared libraries
370   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
371                            2 causes a slowdown at runtime.
372   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
373   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
374                            leaks and errors, using the specified valgrind binary.
375                            Cannot be combined with --target-exec
376   --enable-ftrapv          Trap arithmetic overflows
377   --samples=PATH           location of test samples for FATE, if not set use
378                            \$FATE_SAMPLES at make invocation time.
379   --enable-neon-clobber-test check NEON registers for clobbering (should be
380                            used only for debugging purposes)
381   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
382                            should be used only for debugging purposes)
383   --enable-random          randomly enable/disable components
384   --disable-random
385   --enable-random=LIST     randomly enable/disable specific components or
386   --disable-random=LIST    component groups. LIST is a comma-separated list
387                            of NAME[:PROB] entries where NAME is a component
388                            (group) and PROB the probability associated with
389                            NAME (default 0.5).
390   --random-seed=VALUE      seed value for --enable/disable-random
391
392 NOTE: Object files are built at the place where configure is launched.
393 EOF
394   exit 0
395 }
396
397 quotes='""'
398
399 log(){
400     echo "$@" >> $logfile
401 }
402
403 log_file(){
404     log BEGIN $1
405     pr -n -t $1 >> $logfile
406     log END $1
407 }
408
409 echolog(){
410     log "$@"
411     echo "$@"
412 }
413
414 warn(){
415     log "WARNING: $*"
416     WARNINGS="${WARNINGS}WARNING: $*\n"
417 }
418
419 die(){
420     echolog "$@"
421     cat <<EOF
422
423 If you think configure made a mistake, make sure you are using the latest
424 version from Git.  If the latest version fails, report the problem to the
425 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
426 EOF
427     if disabled logging; then
428         cat <<EOF
429 Rerun configure with logging enabled (do not use --disable-logging), and
430 include the log this produces with your report.
431 EOF
432     else
433         cat <<EOF
434 Include the log file "$logfile" produced by configure as this will help
435 solve the problem.
436 EOF
437     fi
438     exit 1
439 }
440
441 # Avoid locale weirdness, besides we really just want to translate ASCII.
442 toupper(){
443     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
444 }
445
446 tolower(){
447     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
448 }
449
450 c_escape(){
451     echo "$*" | sed 's/["\\]/\\\0/g'
452 }
453
454 sh_quote(){
455     v=$(echo "$1" | sed "s/'/'\\\\''/g")
456     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
457     echo "$v"
458 }
459
460 cleanws(){
461     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
462 }
463
464 filter(){
465     pat=$1
466     shift
467     for v; do
468         eval "case $v in $pat) echo $v ;; esac"
469     done
470 }
471
472 filter_out(){
473     pat=$1
474     shift
475     for v; do
476         eval "case $v in $pat) ;; *) echo $v ;; esac"
477     done
478 }
479
480 map(){
481     m=$1
482     shift
483     for v; do eval $m; done
484 }
485
486 add_suffix(){
487     suffix=$1
488     shift
489     for v; do echo ${v}${suffix}; done
490 }
491
492 set_all(){
493     value=$1
494     shift
495     for var in $*; do
496         eval $var=$value
497     done
498 }
499
500 set_weak(){
501     value=$1
502     shift
503     for var; do
504         eval : \${$var:=$value}
505     done
506 }
507
508 sanitize_var_name(){
509     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
510 }
511
512 set_safe(){
513     var=$1
514     shift
515     eval $(sanitize_var_name "$var")='$*'
516 }
517
518 get_safe(){
519     eval echo \$$(sanitize_var_name "$1")
520 }
521
522 pushvar(){
523     for pvar in $*; do
524         eval level=\${${pvar}_level:=0}
525         eval ${pvar}_${level}="\$$pvar"
526         eval ${pvar}_level=$(($level+1))
527     done
528 }
529
530 popvar(){
531     for pvar in $*; do
532         eval level=\${${pvar}_level:-0}
533         test $level = 0 && continue
534         eval level=$(($level-1))
535         eval $pvar="\${${pvar}_${level}}"
536         eval ${pvar}_level=$level
537         eval unset ${pvar}_${level}
538     done
539 }
540
541 enable(){
542     set_all yes $*
543 }
544
545 disable(){
546     set_all no $*
547 }
548
549 enable_weak(){
550     set_weak yes $*
551 }
552
553 disable_weak(){
554     set_weak no $*
555 }
556
557 enable_safe(){
558     for var; do
559         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
560     done
561 }
562
563 disable_safe(){
564     for var; do
565         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
566     done
567 }
568
569 do_enable_deep(){
570     for var; do
571         enabled $var && continue
572         eval sel="\$${var}_select"
573         eval sgs="\$${var}_suggest"
574         pushvar var sgs
575         enable_deep $sel
576         popvar sgs
577         enable_deep_weak $sgs
578         popvar var
579     done
580 }
581
582 enable_deep(){
583     do_enable_deep $*
584     enable $*
585 }
586
587 enable_deep_weak(){
588     for var; do
589         disabled $var && continue
590         pushvar var
591         do_enable_deep $var
592         popvar var
593         enable_weak $var
594     done
595 }
596
597 enabled(){
598     test "${1#!}" = "$1" && op== || op=!=
599     eval test "x\$${1#!}" $op "xyes"
600 }
601
602 disabled(){
603     test "${1#!}" = "$1" && op== || op=!=
604     eval test "x\$${1#!}" $op "xno"
605 }
606
607 enabled_all(){
608     for opt; do
609         enabled $opt || return 1
610     done
611 }
612
613 disabled_all(){
614     for opt; do
615         disabled $opt || return 1
616     done
617 }
618
619 enabled_any(){
620     for opt; do
621         enabled $opt && return 0
622     done
623 }
624
625 disabled_any(){
626     for opt; do
627         disabled $opt && return 0
628     done
629     return 1
630 }
631
632 set_default(){
633     for opt; do
634         eval : \${$opt:=\$${opt}_default}
635     done
636 }
637
638 is_in(){
639     value=$1
640     shift
641     for var in $*; do
642         [ $var = $value ] && return 0
643     done
644     return 1
645 }
646
647 do_check_deps(){
648     for cfg; do
649         cfg="${cfg#!}"
650         enabled ${cfg}_checking && die "Circular dependency for $cfg."
651         disabled ${cfg}_checking && continue
652         enable ${cfg}_checking
653         append allopts $cfg
654
655         eval dep_all="\$${cfg}_deps"
656         eval dep_any="\$${cfg}_deps_any"
657         eval dep_sel="\$${cfg}_select"
658         eval dep_sgs="\$${cfg}_suggest"
659         eval dep_ifa="\$${cfg}_if"
660         eval dep_ifn="\$${cfg}_if_any"
661
662         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
663         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
664         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
665
666         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
667         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
668         enabled_all  $dep_all || disable $cfg
669         enabled_any  $dep_any || disable $cfg
670         disabled_any $dep_sel && disable $cfg
671
672         if enabled $cfg; then
673             enable_deep $dep_sel
674             enable_deep_weak $dep_sgs
675         fi
676
677         disable ${cfg}_checking
678     done
679 }
680
681 check_deps(){
682     unset allopts
683
684     do_check_deps "$@"
685
686     for cfg in $allopts; do
687         enabled $cfg || continue
688         eval dep_extralibs="\$${cfg}_extralibs"
689         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
690     done
691 }
692
693 print_config(){
694     pfx=$1
695     files=$2
696     shift 2
697     map 'eval echo "$v \${$v:-no}"' "$@" |
698     awk "BEGIN { split(\"$files\", files) }
699         {
700             c = \"$pfx\" toupper(\$1);
701             v = \$2;
702             sub(/yes/, 1, v);
703             sub(/no/,  0, v);
704             for (f in files) {
705                 file = files[f];
706                 if (file ~ /\\.h\$/) {
707                     printf(\"#define %s %d\\n\", c, v) >>file;
708                 } else if (file ~ /\\.asm\$/) {
709                     printf(\"%%define %s %d\\n\", c, v) >>file;
710                 } else if (file ~ /\\.mak\$/) {
711                     n = -v ? \"\" : \"!\";
712                     printf(\"%s%s=yes\\n\", n, c) >>file;
713                 } else if (file ~ /\\.texi\$/) {
714                     pre = -v ? \"\" : \"@c \";
715                     yesno = \$2;
716                     c2 = tolower(c);
717                     gsub(/_/, \"-\", c2);
718                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
719                 }
720             }
721         }"
722 }
723
724 print_enabled(){
725     suf=$1
726     shift
727     for v; do
728         enabled $v && printf "%s\n" ${v%$suf};
729     done
730 }
731
732 append(){
733     var=$1
734     shift
735     eval "$var=\"\$$var $*\""
736 }
737
738 prepend(){
739     var=$1
740     shift
741     eval "$var=\"$* \$$var\""
742 }
743
744 unique(){
745     var=$1
746     uniq_list=""
747     for tok in $(eval echo \$$var); do
748         uniq_list="$(filter_out $tok $uniq_list) $tok"
749     done
750     eval "$var=\"${uniq_list}\""
751 }
752
753 add_cppflags(){
754     append CPPFLAGS "$@"
755 }
756
757 add_cflags(){
758     append CFLAGS $($cflags_filter "$@")
759 }
760
761 add_cxxflags(){
762     append CXXFLAGS $($cflags_filter "$@")
763 }
764
765 add_asflags(){
766     append ASFLAGS $($asflags_filter "$@")
767 }
768
769 add_ldflags(){
770     append LDFLAGS $($ldflags_filter "$@")
771 }
772
773 add_ldexeflags(){
774     append LDEXEFLAGS $($ldflags_filter "$@")
775 }
776
777 add_stripflags(){
778     append ASMSTRIPFLAGS "$@"
779 }
780
781 add_extralibs(){
782     prepend extralibs $($ldflags_filter "$@")
783 }
784
785 add_host_cppflags(){
786     append host_cppflags "$@"
787 }
788
789 add_host_cflags(){
790     append host_cflags $($host_cflags_filter "$@")
791 }
792
793 add_host_ldflags(){
794     append host_ldflags $($host_ldflags_filter "$@")
795 }
796
797 add_compat(){
798     append compat_objs $1
799     shift
800     map 'add_cppflags -D$v' "$@"
801 }
802
803 check_cmd(){
804     log "$@"
805     "$@" >> $logfile 2>&1
806 }
807
808 check_stat(){
809     log check_stat "$@"
810     stat "$1" >> $logfile 2>&1
811 }
812
813 cc_o(){
814     eval printf '%s\\n' $CC_O
815 }
816
817 cc_e(){
818     eval printf '%s\\n' $CC_E
819 }
820
821 check_cc(){
822     log check_cc "$@"
823     cat > $TMPC
824     log_file $TMPC
825     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
826 }
827
828 check_cxx(){
829     log check_cxx "$@"
830     cat > $TMPCPP
831     log_file $TMPCPP
832     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
833 }
834
835 check_oc(){
836     log check_oc "$@"
837     cat > $TMPM
838     log_file $TMPM
839     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
840 }
841
842 check_cpp(){
843     log check_cpp "$@"
844     cat > $TMPC
845     log_file $TMPC
846     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
847 }
848
849 as_o(){
850     eval printf '%s\\n' $AS_O
851 }
852
853 check_as(){
854     log check_as "$@"
855     cat > $TMPS
856     log_file $TMPS
857     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
858 }
859
860 check_inline_asm(){
861     log check_inline_asm "$@"
862     name="$1"
863     code="$2"
864     shift 2
865     disable $name
866     check_cc "$@" <<EOF && enable $name
867 void foo(void){ __asm__ volatile($code); }
868 EOF
869 }
870
871 check_insn(){
872     log check_insn "$@"
873     check_inline_asm ${1}_inline "\"$2\""
874     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
875 }
876
877 check_yasm(){
878     log check_yasm "$@"
879     echo "$1" > $TMPS
880     log_file $TMPS
881     shift 1
882     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
883 }
884
885 ld_o(){
886     eval printf '%s\\n' $LD_O
887 }
888
889 check_ld(){
890     log check_ld "$@"
891     type=$1
892     shift 1
893     flags=$(filter_out '-l*|*.so' $@)
894     libs=$(filter '-l*|*.so' $@)
895     check_$type $($cflags_filter $flags) || return
896     flags=$($ldflags_filter $flags)
897     libs=$($ldflags_filter $libs)
898     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
899 }
900
901 print_include(){
902     hdr=$1
903     test "${hdr%.h}" = "${hdr}" &&
904         echo "#include $hdr"    ||
905         echo "#include <$hdr>"
906 }
907
908 check_code(){
909     log check_code "$@"
910     check=$1
911     headers=$2
912     code=$3
913     shift 3
914     {
915         for hdr in $headers; do
916             print_include $hdr
917         done
918         echo "int main(void) { $code; return 0; }"
919     } | check_$check "$@"
920 }
921
922 check_cppflags(){
923     log check_cppflags "$@"
924     check_cc "$@" <<EOF && append CPPFLAGS "$@"
925 int x;
926 EOF
927 }
928
929 test_cflags(){
930     log test_cflags "$@"
931     set -- $($cflags_filter "$@")
932     check_cc "$@" <<EOF
933 int x;
934 EOF
935 }
936
937 check_cflags(){
938     log check_cflags "$@"
939     test_cflags "$@" && add_cflags "$@"
940 }
941
942 check_cxxflags(){
943     log check_cxxflags "$@"
944     set -- $($cflags_filter "$@")
945     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
946 int x;
947 EOF
948 }
949
950 test_ldflags(){
951     log test_ldflags "$@"
952     check_ld "cc" "$@" <<EOF
953 int main(void){ return 0; }
954 EOF
955 }
956
957 check_ldflags(){
958     log check_ldflags "$@"
959     test_ldflags "$@" && add_ldflags "$@"
960 }
961
962 test_stripflags(){
963     log test_stripflags "$@"
964     # call check_cc to get a fresh TMPO
965     check_cc <<EOF
966 int main(void) { return 0; }
967 EOF
968     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
969 }
970
971 check_stripflags(){
972     log check_stripflags "$@"
973     test_stripflags "$@" && add_stripflags "$@"
974 }
975
976 check_header(){
977     log check_header "$@"
978     header=$1
979     shift
980     disable_safe $header
981     check_cpp "$@" <<EOF && enable_safe $header
982 #include <$header>
983 int x;
984 EOF
985 }
986
987 check_header_oc(){
988     log check_header_oc "$@"
989     rm -f -- "$TMPO"
990     header=$1
991     shift
992     disable_safe $header
993     {
994        echo "#include <$header>"
995        echo "int main(void) { return 0; }"
996     } | check_oc && check_stat "$TMPO" && enable_safe $headers
997 }
998
999 check_func(){
1000     log check_func "$@"
1001     func=$1
1002     shift
1003     disable $func
1004     check_ld "cc" "$@" <<EOF && enable $func
1005 extern int $func();
1006 int main(void){ $func(); }
1007 EOF
1008 }
1009
1010 check_mathfunc(){
1011     log check_mathfunc "$@"
1012     func=$1
1013     narg=$2
1014     shift 2
1015     test $narg = 2 && args="f, g" || args="f"
1016     disable $func
1017     check_ld "cc" "$@" <<EOF && enable $func
1018 #include <math.h>
1019 float foo(float f, float g) { return $func($args); }
1020 int main(void){ return (int) foo; }
1021 EOF
1022 }
1023
1024 check_func_headers(){
1025     log check_func_headers "$@"
1026     headers=$1
1027     funcs=$2
1028     shift 2
1029     {
1030         for hdr in $headers; do
1031             print_include $hdr
1032         done
1033         for func in $funcs; do
1034             echo "long check_$func(void) { return (long) $func; }"
1035         done
1036         echo "int main(void) { return 0; }"
1037     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1038 }
1039
1040 check_class_headers_cpp(){
1041     log check_class_headers_cpp "$@"
1042     headers=$1
1043     classes=$2
1044     shift 2
1045     {
1046         for hdr in $headers; do
1047             echo "#include <$hdr>"
1048         done
1049         echo "int main(void) { "
1050         i=1
1051         for class in $classes; do
1052             echo "$class obj$i;"
1053             i=$(expr $i + 1)
1054         done
1055         echo "return 0; }"
1056     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1057 }
1058
1059 check_cpp_condition(){
1060     log check_cpp_condition "$@"
1061     header=$1
1062     condition=$2
1063     shift 2
1064     check_cpp "$@" <<EOF
1065 #include <$header>
1066 #if !($condition)
1067 #error "unsatisfied condition: $condition"
1068 #endif
1069 EOF
1070 }
1071
1072 check_lib(){
1073     log check_lib "$@"
1074     header="$1"
1075     func="$2"
1076     shift 2
1077     check_header $header && check_func $func "$@" && add_extralibs "$@"
1078 }
1079
1080 check_lib2(){
1081     log check_lib2 "$@"
1082     headers="$1"
1083     funcs="$2"
1084     shift 2
1085     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1086 }
1087
1088 check_lib_cpp(){
1089     log check_lib_cpp "$@"
1090     headers="$1"
1091     classes="$2"
1092     shift 2
1093     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1094 }
1095
1096 check_pkg_config(){
1097     log check_pkg_config "$@"
1098     pkgandversion="$1"
1099     pkg="${1%% *}"
1100     headers="$2"
1101     funcs="$3"
1102     shift 3
1103     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1104     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1105     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1106     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1107         set_safe ${pkg}_cflags $pkg_cflags   &&
1108         set_safe ${pkg}_libs   $pkg_libs
1109 }
1110
1111 check_exec(){
1112     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1113 }
1114
1115 check_exec_crash(){
1116     code=$(cat)
1117
1118     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1119     # are safe but may not be available everywhere.  Thus we use
1120     # raise(SIGTERM) instead.  The check is run in a subshell so we
1121     # can redirect the "Terminated" message from the shell.  SIGBUS
1122     # is not defined by standard C so it is used conditionally.
1123
1124     (check_exec "$@") >> $logfile 2>&1 <<EOF
1125 #include <signal.h>
1126 static void sighandler(int sig){
1127     raise(SIGTERM);
1128 }
1129 int foo(void){
1130     $code
1131 }
1132 int (*func_ptr)(void) = foo;
1133 int main(void){
1134     signal(SIGILL, sighandler);
1135     signal(SIGFPE, sighandler);
1136     signal(SIGSEGV, sighandler);
1137 #ifdef SIGBUS
1138     signal(SIGBUS, sighandler);
1139 #endif
1140     return func_ptr();
1141 }
1142 EOF
1143 }
1144
1145 check_type(){
1146     log check_type "$@"
1147     headers=$1
1148     type=$2
1149     shift 2
1150     disable_safe "$type"
1151     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1152 }
1153
1154 check_struct(){
1155     log check_struct "$@"
1156     headers=$1
1157     struct=$2
1158     member=$3
1159     shift 3
1160     disable_safe "${struct}_${member}"
1161     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1162         enable_safe "${struct}_${member}"
1163 }
1164
1165 check_builtin(){
1166     log check_builtin "$@"
1167     name=$1
1168     headers=$2
1169     builtin=$3
1170     shift 3
1171     disable "$name"
1172     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1173 }
1174
1175 check_compile_assert(){
1176     log check_compile_assert "$@"
1177     name=$1
1178     headers=$2
1179     condition=$3
1180     shift 3
1181     disable "$name"
1182     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1183 }
1184
1185 require(){
1186     name="$1"
1187     header="$2"
1188     func="$3"
1189     shift 3
1190     check_lib $header $func "$@" || die "ERROR: $name not found"
1191 }
1192
1193 require2(){
1194     name="$1"
1195     headers="$2"
1196     func="$3"
1197     shift 3
1198     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1199 }
1200
1201 require_cpp(){
1202     name="$1"
1203     headers="$2"
1204     classes="$3"
1205     shift 3
1206     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1207 }
1208
1209 use_pkg_config(){
1210     pkg="$1"
1211     check_pkg_config "$@" || return 1
1212     add_cflags    $(get_safe ${pkg}_cflags)
1213     add_extralibs $(get_safe ${pkg}_libs)
1214 }
1215
1216 require_pkg_config(){
1217     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1218 }
1219
1220 require_libfreetype(){
1221     log require_libfreetype "$@"
1222     pkg="freetype2"
1223     check_cmd $pkg_config --exists --print-errors $pkg \
1224       || die "ERROR: $pkg not found"
1225     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1226     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1227     {
1228         echo "#include <ft2build.h>"
1229         echo "#include FT_FREETYPE_H"
1230         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1231         echo "int main(void) { return 0; }"
1232     } | check_ld "cc" $pkg_cflags $pkg_libs \
1233       && set_safe ${pkg}_cflags $pkg_cflags \
1234       && set_safe ${pkg}_libs   $pkg_libs \
1235       || die "ERROR: $pkg not found"
1236     add_cflags    $(get_safe ${pkg}_cflags)
1237     add_extralibs $(get_safe ${pkg}_libs)
1238 }
1239
1240 hostcc_e(){
1241     eval printf '%s\\n' $HOSTCC_E
1242 }
1243
1244 hostcc_o(){
1245     eval printf '%s\\n' $HOSTCC_O
1246 }
1247
1248 check_host_cc(){
1249     log check_host_cc "$@"
1250     cat > $TMPC
1251     log_file $TMPC
1252     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1253 }
1254
1255 check_host_cpp(){
1256     log check_host_cpp "$@"
1257     cat > $TMPC
1258     log_file $TMPC
1259     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1260 }
1261
1262 check_host_cppflags(){
1263     log check_host_cppflags "$@"
1264     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1265 int x;
1266 EOF
1267 }
1268
1269 check_host_cflags(){
1270     log check_host_cflags "$@"
1271     set -- $($host_cflags_filter "$@")
1272     check_host_cc "$@" <<EOF && append host_cflags "$@"
1273 int x;
1274 EOF
1275 }
1276
1277 check_host_cpp_condition(){
1278     log check_host_cpp_condition "$@"
1279     header=$1
1280     condition=$2
1281     shift 2
1282     check_host_cpp "$@" <<EOF
1283 #include <$header>
1284 #if !($condition)
1285 #error "unsatisfied condition: $condition"
1286 #endif
1287 EOF
1288 }
1289
1290 apply(){
1291     file=$1
1292     shift
1293     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1294 }
1295
1296 cp_if_changed(){
1297     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1298     mkdir -p "$(dirname $2)"
1299     $cp_f "$1" "$2"
1300 }
1301
1302 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1303 # system-dependent things.
1304
1305 COMPONENT_LIST="
1306     bsfs
1307     decoders
1308     demuxers
1309     encoders
1310     filters
1311     hwaccels
1312     indevs
1313     muxers
1314     outdevs
1315     parsers
1316     protocols
1317 "
1318
1319 EXAMPLE_LIST="
1320     avio_reading_example
1321     decoding_encoding_example
1322     demuxing_decoding_example
1323     extract_mvs_example
1324     filter_audio_example
1325     filtering_audio_example
1326     filtering_video_example
1327     metadata_example
1328     muxing_example
1329     remuxing_example
1330     resampling_audio_example
1331     scaling_video_example
1332     transcode_aac_example
1333     transcoding_example
1334 "
1335
1336 EXTERNAL_LIBRARY_LIST="
1337     avisynth
1338     bzlib
1339     crystalhd
1340     decklink
1341     frei0r
1342     gnutls
1343     iconv
1344     ladspa
1345     libaacplus
1346     libass
1347     libbluray
1348     libbs2b
1349     libcaca
1350     libcdio
1351     libcelt
1352     libdc1394
1353     libfaac
1354     libfdk_aac
1355     libflite
1356     libfontconfig
1357     libfreetype
1358     libfribidi
1359     libgme
1360     libgsm
1361     libiec61883
1362     libilbc
1363     libmodplug
1364     libmp3lame
1365     libnut
1366     libopencore_amrnb
1367     libopencore_amrwb
1368     libopencv
1369     libopenjpeg
1370     libopus
1371     libpulse
1372     libquvi
1373     librtmp
1374     libschroedinger
1375     libshine
1376     libsmbclient
1377     libsoxr
1378     libspeex
1379     libssh
1380     libstagefright_h264
1381     libtheora
1382     libtwolame
1383     libutvideo
1384     libv4l2
1385     libvidstab
1386     libvo_aacenc
1387     libvo_amrwbenc
1388     libvorbis
1389     libvpx
1390     libwavpack
1391     libwebp
1392     libx264
1393     libx265
1394     libxavs
1395     libxcb
1396     libxcb_shm
1397     libxcb_shape
1398     libxcb_xfixes
1399     libxvid
1400     libzmq
1401     libzvbi
1402     lzma
1403     openal
1404     opencl
1405     opengl
1406     openssl
1407     sdl
1408     x11grab
1409     xlib
1410     zlib
1411 "
1412
1413 DOCUMENT_LIST="
1414     doc
1415     htmlpages
1416     manpages
1417     podpages
1418     txtpages
1419 "
1420
1421 FEATURE_LIST="
1422     ftrapv
1423     gray
1424     hardcoded_tables
1425     runtime_cpudetect
1426     safe_bitstream_reader
1427     shared
1428     small
1429     static
1430     swscale_alpha
1431 "
1432
1433 HWACCEL_LIST="
1434     dxva2
1435     vaapi
1436     vda
1437     vdpau
1438     xvmc
1439 "
1440
1441 LIBRARY_LIST="
1442     avcodec
1443     avdevice
1444     avfilter
1445     avformat
1446     avresample
1447     avutil
1448     postproc
1449     swresample
1450     swscale
1451 "
1452
1453 LICENSE_LIST="
1454     gpl
1455     nonfree
1456     version3
1457 "
1458
1459 PROGRAM_LIST="
1460     ffplay
1461     ffprobe
1462     ffserver
1463     ffmpeg
1464 "
1465
1466 SUBSYSTEM_LIST="
1467     dct
1468     dwt
1469     error_resilience
1470     faan
1471     fast_unaligned
1472     fft
1473     lsp
1474     lzo
1475     mdct
1476     pixelutils
1477     network
1478     rdft
1479 "
1480
1481 CONFIG_LIST="
1482     $COMPONENT_LIST
1483     $DOCUMENT_LIST
1484     $EXAMPLE_LIST
1485     $EXTERNAL_LIBRARY_LIST
1486     $FEATURE_LIST
1487     $HWACCEL_LIST
1488     $LICENSE_LIST
1489     $LIBRARY_LIST
1490     $PROGRAM_LIST
1491     $SUBSYSTEM_LIST
1492     fontconfig
1493     incompatible_libav_abi
1494     memalign_hack
1495     memory_poisoning
1496     neon_clobber_test
1497     pic
1498     pod2man
1499     raise_major
1500     thumb
1501     xmm_clobber_test
1502 "
1503
1504 THREADS_LIST="
1505     pthreads
1506     os2threads
1507     w32threads
1508 "
1509
1510 ATOMICS_LIST="
1511     atomics_gcc
1512     atomics_suncc
1513     atomics_win32
1514 "
1515
1516 ARCH_LIST="
1517     aarch64
1518     alpha
1519     arm
1520     avr32
1521     avr32_ap
1522     avr32_uc
1523     bfin
1524     ia64
1525     m68k
1526     mips
1527     mips64
1528     parisc
1529     ppc
1530     ppc64
1531     s390
1532     sh4
1533     sparc
1534     sparc64
1535     tilegx
1536     tilepro
1537     tomi
1538     x86
1539     x86_32
1540     x86_64
1541 "
1542
1543 ARCH_EXT_LIST_ARM="
1544     armv5te
1545     armv6
1546     armv6t2
1547     armv8
1548     neon
1549     vfp
1550     vfpv3
1551     setend
1552 "
1553
1554 ARCH_EXT_LIST_MIPS="
1555     mipsfpu
1556     mips32r2
1557     mipsdspr1
1558     mipsdspr2
1559 "
1560
1561 ARCH_EXT_LIST_X86_SIMD="
1562     amd3dnow
1563     amd3dnowext
1564     avx
1565     avx2
1566     fma3
1567     fma4
1568     mmx
1569     mmxext
1570     sse
1571     sse2
1572     sse3
1573     sse4
1574     sse42
1575     ssse3
1576     xop
1577 "
1578
1579 ARCH_EXT_LIST_PPC="
1580     altivec
1581     dcbzl
1582     ldbrx
1583     ppc4xx
1584     vsx
1585 "
1586
1587 ARCH_EXT_LIST_X86="
1588     $ARCH_EXT_LIST_X86_SIMD
1589     cpunop
1590     i686
1591 "
1592
1593 ARCH_EXT_LIST="
1594     $ARCH_EXT_LIST_ARM
1595     $ARCH_EXT_LIST_PPC
1596     $ARCH_EXT_LIST_X86
1597     $ARCH_EXT_LIST_MIPS
1598     loongson
1599 "
1600
1601 ARCH_FEATURES="
1602     aligned_stack
1603     fast_64bit
1604     fast_clz
1605     fast_cmov
1606     local_aligned_8
1607     local_aligned_16
1608     local_aligned_32
1609     simd_align_16
1610 "
1611
1612 BUILTIN_LIST="
1613     atomic_cas_ptr
1614     atomic_compare_exchange
1615     machine_rw_barrier
1616     MemoryBarrier
1617     mm_empty
1618     rdtsc
1619     sarestart
1620     sync_val_compare_and_swap
1621 "
1622 HAVE_LIST_CMDLINE="
1623     inline_asm
1624     symver
1625     yasm
1626 "
1627
1628 HAVE_LIST_PUB="
1629     bigendian
1630     fast_unaligned
1631     incompatible_libav_abi
1632 "
1633
1634 HEADERS_LIST="
1635     alsa_asoundlib_h
1636     altivec_h
1637     arpa_inet_h
1638     asm_types_h
1639     cdio_paranoia_h
1640     cdio_paranoia_paranoia_h
1641     CL_cl_h
1642     dev_bktr_ioctl_bt848_h
1643     dev_bktr_ioctl_meteor_h
1644     dev_ic_bt8xx_h
1645     dev_video_bktr_ioctl_bt848_h
1646     dev_video_meteor_ioctl_meteor_h
1647     direct_h
1648     dlfcn_h
1649     dxva_h
1650     ES2_gl_h
1651     gsm_h
1652     io_h
1653     mach_mach_time_h
1654     machine_ioctl_bt848_h
1655     machine_ioctl_meteor_h
1656     malloc_h
1657     openjpeg_1_5_openjpeg_h
1658     OpenGL_gl3_h
1659     poll_h
1660     sndio_h
1661     soundcard_h
1662     sys_mman_h
1663     sys_param_h
1664     sys_resource_h
1665     sys_select_h
1666     sys_soundcard_h
1667     sys_time_h
1668     sys_un_h
1669     sys_videoio_h
1670     termios_h
1671     udplite_h
1672     unistd_h
1673     windows_h
1674     winsock2_h
1675 "
1676
1677 INTRINSICS_LIST="
1678     intrinsics_neon
1679 "
1680
1681 MATH_FUNCS="
1682     atanf
1683     atan2f
1684     cbrt
1685     cbrtf
1686     cosf
1687     exp2
1688     exp2f
1689     expf
1690     isinf
1691     isnan
1692     ldexpf
1693     llrint
1694     llrintf
1695     log2
1696     log2f
1697     log10f
1698     lrint
1699     lrintf
1700     powf
1701     rint
1702     round
1703     roundf
1704     sinf
1705     trunc
1706     truncf
1707 "
1708
1709 SYSTEM_FUNCS="
1710     access
1711     aligned_malloc
1712     clock_gettime
1713     closesocket
1714     CommandLineToArgvW
1715     CoTaskMemFree
1716     CryptGenRandom
1717     dlopen
1718     fcntl
1719     flt_lim
1720     fork
1721     getaddrinfo
1722     gethrtime
1723     getopt
1724     GetProcessAffinityMask
1725     GetProcessMemoryInfo
1726     GetProcessTimes
1727     getrusage
1728     getservbyport
1729     GetSystemTimeAsFileTime
1730     gettimeofday
1731     glob
1732     glXGetProcAddress
1733     gmtime_r
1734     inet_aton
1735     isatty
1736     jack_port_get_latency_range
1737     kbhit
1738     localtime_r
1739     lzo1x_999_compress
1740     mach_absolute_time
1741     MapViewOfFile
1742     MoveFileExA
1743     memalign
1744     mkstemp
1745     mmap
1746     mprotect
1747     nanosleep
1748     PeekNamedPipe
1749     posix_memalign
1750     pthread_cancel
1751     sched_getaffinity
1752     SetConsoleTextAttribute
1753     setmode
1754     setrlimit
1755     Sleep
1756     strerror_r
1757     sysconf
1758     sysctl
1759     usleep
1760     VirtualAlloc
1761     wglGetProcAddress
1762 "
1763
1764 TOOLCHAIN_FEATURES="
1765     as_dn_directive
1766     as_func
1767     asm_mod_q
1768     attribute_may_alias
1769     attribute_packed
1770     ebp_available
1771     ebx_available
1772     gnu_as
1773     gnu_windres
1774     ibm_asm
1775     inline_asm_labels
1776     inline_asm_nonlocal_labels
1777     inline_asm_direct_symbol_refs
1778     pragma_deprecated
1779     rsync_contimeout
1780     symver_asm_label
1781     symver_gnu_asm
1782     vfp_args
1783     xform_asm
1784     xmm_clobbers
1785 "
1786
1787 TYPES_LIST="
1788     CONDITION_VARIABLE_Ptr
1789     socklen_t
1790     struct_addrinfo
1791     struct_group_source_req
1792     struct_ip_mreq_source
1793     struct_ipv6_mreq
1794     struct_pollfd
1795     struct_rusage_ru_maxrss
1796     struct_sctp_event_subscribe
1797     struct_sockaddr_in6
1798     struct_sockaddr_sa_len
1799     struct_sockaddr_storage
1800     struct_stat_st_mtim_tv_nsec
1801     struct_v4l2_frmivalenum_discrete
1802 "
1803
1804 HAVE_LIST="
1805     $ARCH_EXT_LIST
1806     $(add_suffix _external $ARCH_EXT_LIST)
1807     $(add_suffix _inline   $ARCH_EXT_LIST)
1808     $ARCH_FEATURES
1809     $ATOMICS_LIST
1810     $BUILTIN_LIST
1811     $HAVE_LIST_CMDLINE
1812     $HAVE_LIST_PUB
1813     $HEADERS_LIST
1814     $INTRINSICS_LIST
1815     $MATH_FUNCS
1816     $SYSTEM_FUNCS
1817     $THREADS_LIST
1818     $TOOLCHAIN_FEATURES
1819     $TYPES_LIST
1820     atomics_native
1821     dos_paths
1822     dxva2api_cobj
1823     dxva2_lib
1824     libc_msvcrt
1825     libdc1394_1
1826     libdc1394_2
1827     makeinfo
1828     makeinfo_html
1829     perl
1830     pod2man
1831     sdl
1832     section_data_rel_ro
1833     texi2html
1834     threads
1835     vdpau_x11
1836     xlib
1837 "
1838
1839 # options emitted with CONFIG_ prefix but not available on the command line
1840 CONFIG_EXTRA="
1841     aandcttables
1842     ac3dsp
1843     audio_frame_queue
1844     audiodsp
1845     blockdsp
1846     bswapdsp
1847     cabac
1848     dvprofile
1849     exif
1850     faandct
1851     faanidct
1852     fdctdsp
1853     frame_thread_encoder
1854     gcrypt
1855     golomb
1856     gplv3
1857     h263dsp
1858     h264chroma
1859     h264dsp
1860     h264pred
1861     h264qpel
1862     hpeldsp
1863     huffman
1864     huffyuvdsp
1865     huffyuvencdsp
1866     idctdsp
1867     iirfilter
1868     intrax8
1869     lgplv3
1870     llauddsp
1871     llviddsp
1872     lpc
1873     me_cmp
1874     mpeg_er
1875     mpegaudio
1876     mpegaudiodsp
1877     mpegvideo
1878     mpegvideoenc
1879     nettle
1880     pixblockdsp
1881     qpeldsp
1882     rangecoder
1883     riffdec
1884     riffenc
1885     rtpdec
1886     rtpenc_chain
1887     sinewin
1888     startcode
1889     tpeldsp
1890     videodsp
1891     vp3dsp
1892     wma_freqs
1893 "
1894
1895 CMDLINE_SELECT="
1896     $ARCH_EXT_LIST
1897     $CONFIG_LIST
1898     $HAVE_LIST_CMDLINE
1899     $THREADS_LIST
1900     asm
1901     cross_compile
1902     debug
1903     extra_warnings
1904     logging
1905     lto
1906     optimizations
1907     rpath
1908     stripping
1909 "
1910
1911 PATHS_LIST="
1912     bindir
1913     datadir
1914     docdir
1915     incdir
1916     libdir
1917     mandir
1918     prefix
1919     shlibdir
1920 "
1921
1922 CMDLINE_SET="
1923     $PATHS_LIST
1924     ar
1925     arch
1926     as
1927     assert_level
1928     build_suffix
1929     cc
1930     cpu
1931     cross_prefix
1932     cxx
1933     dep_cc
1934     doxygen
1935     extra_version
1936     gas
1937     host_cc
1938     host_cflags
1939     host_ld
1940     host_ldflags
1941     host_libs
1942     host_os
1943     install
1944     ld
1945     logfile
1946     malloc_prefix
1947     nm
1948     optflags
1949     pkg_config
1950     pkg_config_flags
1951     progs_suffix
1952     random_seed
1953     ranlib
1954     samples
1955     strip
1956     sws_max_filter_size
1957     sysinclude
1958     sysroot
1959     target_exec
1960     target_os
1961     target_path
1962     target_samples
1963     tempprefix
1964     toolchain
1965     valgrind
1966     yasmexe
1967 "
1968
1969 CMDLINE_APPEND="
1970     extra_cflags
1971     extra_cxxflags
1972     host_cppflags
1973 "
1974
1975 # code dependency declarations
1976
1977 # architecture extensions
1978
1979 armv5te_deps="arm"
1980 armv6_deps="arm"
1981 armv6t2_deps="arm"
1982 armv8_deps="aarch64"
1983 neon_deps_any="aarch64 arm"
1984 intrinsics_neon_deps="neon"
1985 vfp_deps_any="aarch64 arm"
1986 vfpv3_deps="vfp"
1987 setend_deps="arm"
1988
1989 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1990
1991 mipsfpu_deps="mips"
1992 mips32r2_deps="mips"
1993 mipsdspr1_deps="mips"
1994 mipsdspr2_deps="mips"
1995
1996 altivec_deps="ppc"
1997 ppc4xx_deps="ppc"
1998 vsx_deps="ppc"
1999
2000 cpunop_deps="i686"
2001 x86_64_select="i686"
2002 x86_64_suggest="fast_cmov"
2003
2004 amd3dnow_deps="mmx"
2005 amd3dnowext_deps="amd3dnow"
2006 i686_deps="x86"
2007 mmx_deps="x86"
2008 mmxext_deps="mmx"
2009 sse_deps="mmxext"
2010 sse2_deps="sse"
2011 sse3_deps="sse2"
2012 ssse3_deps="sse3"
2013 sse4_deps="ssse3"
2014 sse42_deps="sse4"
2015 avx_deps="sse42"
2016 xop_deps="avx"
2017 fma3_deps="avx"
2018 fma4_deps="avx"
2019 avx2_deps="avx"
2020
2021 mmx_external_deps="yasm"
2022 mmx_inline_deps="inline_asm"
2023 mmx_suggest="mmx_external mmx_inline"
2024
2025 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2026     eval dep=\$${ext}_deps
2027     eval ${ext}_external_deps='"${dep}_external"'
2028     eval ${ext}_inline_deps='"${dep}_inline"'
2029     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2030 done
2031
2032 aligned_stack_if_any="aarch64 ppc x86"
2033 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2034 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2035 fast_unaligned_if_any="aarch64 ppc x86"
2036 simd_align_16_if_any="altivec neon sse"
2037
2038 # system capabilities
2039
2040 symver_if_any="symver_asm_label symver_gnu_asm"
2041
2042 # threading support
2043 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2044 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2045 atomics_win32_if="MemoryBarrier"
2046 atomics_native_if_any="$ATOMICS_LIST"
2047 w32threads_deps="atomics_native"
2048 threads_if_any="$THREADS_LIST"
2049
2050 # subsystems
2051 dct_select="rdft"
2052 error_resilience_select="me_cmp"
2053 faandct_deps="faan fdctdsp"
2054 faanidct_deps="faan idctdsp"
2055 frame_thread_encoder_deps="encoders threads"
2056 intrax8_select="error_resilience"
2057 mdct_select="fft"
2058 rdft_select="fft"
2059 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2060 mpeg_er_select="error_resilience"
2061 mpegaudio_select="mpegaudiodsp"
2062 mpegaudiodsp_select="dct"
2063 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2064 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2065
2066 # decoders / encoders
2067 aac_decoder_select="mdct sinewin"
2068 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2069 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2070 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2071 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2072 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2073 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2074 aic_decoder_select="golomb idctdsp"
2075 alac_encoder_select="lpc"
2076 als_decoder_select="bswapdsp"
2077 amrnb_decoder_select="lsp"
2078 amrwb_decoder_select="lsp"
2079 amv_decoder_select="sp5x_decoder exif"
2080 amv_encoder_select="aandcttables mpegvideoenc"
2081 ape_decoder_select="bswapdsp llauddsp"
2082 apng_decoder_select="zlib"
2083 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2084 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2085 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2086 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2087 atrac1_decoder_select="mdct sinewin"
2088 atrac3_decoder_select="mdct"
2089 atrac3p_decoder_select="mdct sinewin"
2090 avrn_decoder_select="exif"
2091 bink_decoder_select="blockdsp hpeldsp"
2092 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2093 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2094 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2095 cllc_decoder_select="bswapdsp"
2096 comfortnoise_encoder_select="lpc"
2097 cook_decoder_select="audiodsp mdct sinewin"
2098 cscd_decoder_select="lzo"
2099 cscd_decoder_suggest="zlib"
2100 dca_decoder_select="mdct"
2101 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2102 dnxhd_decoder_select="blockdsp idctdsp"
2103 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2104 dvvideo_decoder_select="dvprofile idctdsp"
2105 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2106 dxa_decoder_select="zlib"
2107 eac3_decoder_select="ac3_decoder"
2108 eac3_encoder_select="ac3_encoder"
2109 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2110 eatgq_decoder_select="aandcttables"
2111 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2112 exr_decoder_select="zlib"
2113 ffv1_decoder_select="golomb rangecoder"
2114 ffv1_encoder_select="rangecoder"
2115 ffvhuff_decoder_select="huffyuv_decoder"
2116 ffvhuff_encoder_select="huffyuv_encoder"
2117 fic_decoder_select="golomb"
2118 flac_decoder_select="golomb"
2119 flac_encoder_select="bswapdsp golomb lpc"
2120 flashsv_decoder_select="zlib"
2121 flashsv_encoder_select="zlib"
2122 flashsv2_encoder_select="zlib"
2123 flashsv2_decoder_select="zlib"
2124 flv_decoder_select="h263_decoder"
2125 flv_encoder_select="h263_encoder"
2126 fourxm_decoder_select="blockdsp bswapdsp"
2127 fraps_decoder_select="bswapdsp huffman"
2128 g2m_decoder_select="blockdsp idctdsp zlib"
2129 g729_decoder_select="audiodsp"
2130 h261_decoder_select="mpeg_er mpegvideo"
2131 h261_encoder_select="aandcttables mpegvideoenc"
2132 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2133 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2134 h263i_decoder_select="h263_decoder"
2135 h263p_encoder_select="h263_encoder"
2136 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2137 h264_decoder_suggest="error_resilience"
2138 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2139 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2140 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2141 iac_decoder_select="imc_decoder"
2142 imc_decoder_select="bswapdsp fft mdct sinewin"
2143 indeo3_decoder_select="hpeldsp"
2144 interplay_video_decoder_select="hpeldsp"
2145 jpegls_decoder_select="golomb mjpeg_decoder"
2146 jpegls_encoder_select="golomb"
2147 jv_decoder_select="blockdsp"
2148 lagarith_decoder_select="huffyuvdsp"
2149 ljpeg_encoder_select="aandcttables idctdsp"
2150 loco_decoder_select="golomb"
2151 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2152 metasound_decoder_select="lsp mdct sinewin"
2153 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2154 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2155 mjpeg_encoder_select="aandcttables mpegvideoenc"
2156 mjpegb_decoder_select="mjpeg_decoder"
2157 mlp_decoder_select="mlp_parser"
2158 motionpixels_decoder_select="bswapdsp"
2159 mp1_decoder_select="mpegaudio"
2160 mp1float_decoder_select="mpegaudio"
2161 mp2_decoder_select="mpegaudio"
2162 mp2float_decoder_select="mpegaudio"
2163 mp3_decoder_select="mpegaudio"
2164 mp3adu_decoder_select="mpegaudio"
2165 mp3adufloat_decoder_select="mpegaudio"
2166 mp3float_decoder_select="mpegaudio"
2167 mp3on4_decoder_select="mpegaudio"
2168 mp3on4float_decoder_select="mpegaudio"
2169 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2170 mpc8_decoder_select="mpegaudiodsp"
2171 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2172 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2173 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2174 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2175 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2176 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2177 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2178 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2179 mpeg4_encoder_select="h263_encoder"
2180 msmpeg4v1_decoder_select="h263_decoder"
2181 msmpeg4v2_decoder_select="h263_decoder"
2182 msmpeg4v2_encoder_select="h263_encoder"
2183 msmpeg4v3_decoder_select="h263_decoder"
2184 msmpeg4v3_encoder_select="h263_encoder"
2185 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2186 mxpeg_decoder_select="mjpeg_decoder"
2187 nellymoser_decoder_select="mdct sinewin"
2188 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2189 nuv_decoder_select="idctdsp lzo"
2190 on2avc_decoder_select="mdct"
2191 opus_decoder_deps="swresample"
2192 png_decoder_select="zlib"
2193 png_encoder_select="huffyuvencdsp zlib"
2194 prores_decoder_select="blockdsp idctdsp"
2195 prores_encoder_select="fdctdsp"
2196 qcelp_decoder_select="lsp"
2197 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2198 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2199 ra_144_decoder_select="audiodsp"
2200 ralf_decoder_select="golomb"
2201 rawvideo_decoder_select="bswapdsp"
2202 rtjpeg_decoder_select="me_cmp"
2203 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2204 rv10_encoder_select="h263_encoder"
2205 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2206 rv20_encoder_select="h263_encoder"
2207 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2208 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2209 shorten_decoder_select="golomb"
2210 sipr_decoder_select="lsp"
2211 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2212 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2213 sonic_decoder_select="golomb rangecoder"
2214 sonic_encoder_select="golomb rangecoder"
2215 sonic_ls_encoder_select="golomb rangecoder"
2216 sp5x_decoder_select="mjpeg_decoder"
2217 svq1_decoder_select="hpeldsp"
2218 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2219 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2220 svq3_decoder_suggest="zlib"
2221 tak_decoder_select="audiodsp"
2222 theora_decoder_select="vp3_decoder"
2223 thp_decoder_select="mjpeg_decoder"
2224 tiff_decoder_suggest="zlib lzma"
2225 tiff_encoder_suggest="zlib"
2226 truehd_decoder_select="mlp_parser"
2227 truemotion2_decoder_select="bswapdsp"
2228 truespeech_decoder_select="bswapdsp"
2229 tscc_decoder_select="zlib"
2230 twinvq_decoder_select="mdct lsp sinewin"
2231 utvideo_decoder_select="bswapdsp"
2232 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2233 vble_decoder_select="huffyuvdsp"
2234 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2235 vc1image_decoder_select="vc1_decoder"
2236 vorbis_decoder_select="mdct"
2237 vorbis_encoder_select="mdct"
2238 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2239 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2240 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2241 vp6a_decoder_select="vp6_decoder"
2242 vp6f_decoder_select="vp6_decoder"
2243 vp7_decoder_select="h264pred videodsp"
2244 vp8_decoder_select="h264pred videodsp"
2245 vp9_decoder_select="videodsp vp9_parser"
2246 webp_decoder_select="vp8_decoder"
2247 wmalossless_decoder_select="llauddsp"
2248 wmapro_decoder_select="mdct sinewin wma_freqs"
2249 wmav1_decoder_select="mdct sinewin wma_freqs"
2250 wmav1_encoder_select="mdct sinewin wma_freqs"
2251 wmav2_decoder_select="mdct sinewin wma_freqs"
2252 wmav2_encoder_select="mdct sinewin wma_freqs"
2253 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2254 wmv1_decoder_select="h263_decoder"
2255 wmv1_encoder_select="h263_encoder"
2256 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2257 wmv2_encoder_select="h263_encoder"
2258 wmv3_decoder_select="vc1_decoder"
2259 wmv3image_decoder_select="wmv3_decoder"
2260 zerocodec_decoder_select="zlib"
2261 zlib_decoder_select="zlib"
2262 zlib_encoder_select="zlib"
2263 zmbv_decoder_select="zlib"
2264 zmbv_encoder_select="zlib"
2265
2266 # hardware accelerators
2267 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2268 dxva2_deps="dxva2api_h"
2269 vaapi_deps="va_va_h"
2270 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2271 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2272 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2273 xvmc_deps="X11_extensions_XvMClib_h"
2274
2275 h263_vaapi_hwaccel_deps="vaapi"
2276 h263_vaapi_hwaccel_select="h263_decoder"
2277 h263_vdpau_hwaccel_deps="vdpau"
2278 h263_vdpau_hwaccel_select="h263_decoder"
2279 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2280 h264_dxva2_hwaccel_deps="dxva2"
2281 h264_dxva2_hwaccel_select="h264_decoder"
2282 h264_vaapi_hwaccel_deps="vaapi"
2283 h264_vaapi_hwaccel_select="h264_decoder"
2284 h264_vda_decoder_deps="vda"
2285 h264_vda_decoder_select="h264_decoder"
2286 h264_vda_hwaccel_deps="vda"
2287 h264_vda_hwaccel_select="h264_decoder"
2288 h264_vda_old_hwaccel_deps="vda"
2289 h264_vda_old_hwaccel_select="h264_decoder"
2290 h264_vdpau_decoder_deps="vdpau"
2291 h264_vdpau_decoder_select="h264_decoder"
2292 h264_vdpau_hwaccel_deps="vdpau"
2293 h264_vdpau_hwaccel_select="h264_decoder"
2294 mpeg_vdpau_decoder_deps="vdpau"
2295 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2296 mpeg_xvmc_hwaccel_deps="xvmc"
2297 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2298 mpeg1_vdpau_decoder_deps="vdpau"
2299 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2300 mpeg1_vdpau_hwaccel_deps="vdpau"
2301 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2302 mpeg1_xvmc_hwaccel_deps="xvmc"
2303 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2304 mpeg2_crystalhd_decoder_select="crystalhd"
2305 mpeg2_dxva2_hwaccel_deps="dxva2"
2306 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2307 mpeg2_vaapi_hwaccel_deps="vaapi"
2308 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2309 mpeg2_vdpau_hwaccel_deps="vdpau"
2310 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2311 mpeg2_xvmc_hwaccel_deps="xvmc"
2312 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2313 mpeg4_crystalhd_decoder_select="crystalhd"
2314 mpeg4_vaapi_hwaccel_deps="vaapi"
2315 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2316 mpeg4_vdpau_decoder_deps="vdpau"
2317 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2318 mpeg4_vdpau_hwaccel_deps="vdpau"
2319 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2320 msmpeg4_crystalhd_decoder_select="crystalhd"
2321 vc1_crystalhd_decoder_select="crystalhd"
2322 vc1_dxva2_hwaccel_deps="dxva2"
2323 vc1_dxva2_hwaccel_select="vc1_decoder"
2324 vc1_vaapi_hwaccel_deps="vaapi"
2325 vc1_vaapi_hwaccel_select="vc1_decoder"
2326 vc1_vdpau_decoder_deps="vdpau"
2327 vc1_vdpau_decoder_select="vc1_decoder"
2328 vc1_vdpau_hwaccel_deps="vdpau"
2329 vc1_vdpau_hwaccel_select="vc1_decoder"
2330 wmv3_crystalhd_decoder_select="crystalhd"
2331 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2332 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2333 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2334 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2335
2336 # parsers
2337 h264_parser_select="h264_decoder"
2338 hevc_parser_select="hevc_decoder"
2339 mpegvideo_parser_select="mpegvideo"
2340 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2341 vc1_parser_select="mpegvideo startcode vc1_decoder"
2342
2343 # external libraries
2344 libaacplus_encoder_deps="libaacplus"
2345 libcelt_decoder_deps="libcelt"
2346 libfaac_encoder_deps="libfaac"
2347 libfaac_encoder_select="audio_frame_queue"
2348 libfdk_aac_decoder_deps="libfdk_aac"
2349 libfdk_aac_encoder_deps="libfdk_aac"
2350 libfdk_aac_encoder_select="audio_frame_queue"
2351 libgme_demuxer_deps="libgme"
2352 libgsm_decoder_deps="libgsm"
2353 libgsm_encoder_deps="libgsm"
2354 libgsm_ms_decoder_deps="libgsm"
2355 libgsm_ms_encoder_deps="libgsm"
2356 libilbc_decoder_deps="libilbc"
2357 libilbc_encoder_deps="libilbc"
2358 libmodplug_demuxer_deps="libmodplug"
2359 libmp3lame_encoder_deps="libmp3lame"
2360 libmp3lame_encoder_select="audio_frame_queue"
2361 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2362 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2363 libopencore_amrnb_encoder_select="audio_frame_queue"
2364 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2365 libopenjpeg_decoder_deps="libopenjpeg"
2366 libopenjpeg_encoder_deps="libopenjpeg"
2367 libopus_decoder_deps="libopus"
2368 libopus_encoder_deps="libopus"
2369 libopus_encoder_select="audio_frame_queue"
2370 libquvi_demuxer_deps="libquvi"
2371 libschroedinger_decoder_deps="libschroedinger"
2372 libschroedinger_encoder_deps="libschroedinger"
2373 libshine_encoder_deps="libshine"
2374 libshine_encoder_select="audio_frame_queue"
2375 libspeex_decoder_deps="libspeex"
2376 libspeex_encoder_deps="libspeex"
2377 libspeex_encoder_select="audio_frame_queue"
2378 libstagefright_h264_decoder_deps="libstagefright_h264"
2379 libtheora_encoder_deps="libtheora"
2380 libtwolame_encoder_deps="libtwolame"
2381 libvo_aacenc_encoder_deps="libvo_aacenc"
2382 libvo_aacenc_encoder_select="audio_frame_queue"
2383 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2384 libvorbis_decoder_deps="libvorbis"
2385 libvorbis_encoder_deps="libvorbis"
2386 libvorbis_encoder_select="audio_frame_queue"
2387 libvpx_vp8_decoder_deps="libvpx"
2388 libvpx_vp8_encoder_deps="libvpx"
2389 libvpx_vp9_decoder_deps="libvpx"
2390 libvpx_vp9_encoder_deps="libvpx"
2391 libwavpack_encoder_deps="libwavpack"
2392 libwebp_encoder_deps="libwebp"
2393 libx264_encoder_deps="libx264"
2394 libx264rgb_encoder_deps="libx264"
2395 libx264rgb_encoder_select="libx264_encoder"
2396 libx265_encoder_deps="libx265"
2397 libxavs_encoder_deps="libxavs"
2398 libxvid_encoder_deps="libxvid"
2399 libutvideo_decoder_deps="libutvideo"
2400 libutvideo_encoder_deps="libutvideo"
2401 libzvbi_teletext_decoder_deps="libzvbi"
2402
2403 # demuxers / muxers
2404 ac3_demuxer_select="ac3_parser"
2405 asf_demuxer_select="riffdec"
2406 asf_muxer_select="riffenc"
2407 asf_stream_muxer_select="asf_muxer"
2408 avi_demuxer_select="riffdec exif"
2409 avi_muxer_select="riffenc"
2410 avisynth_demuxer_deps="avisynth"
2411 avisynth_demuxer_select="riffdec"
2412 caf_demuxer_select="riffdec"
2413 dash_muxer_select="mp4_muxer"
2414 dirac_demuxer_select="dirac_parser"
2415 dts_demuxer_select="dca_parser"
2416 dtshd_demuxer_select="dca_parser"
2417 dv_demuxer_select="dvprofile"
2418 dv_muxer_select="dvprofile"
2419 dxa_demuxer_select="riffdec"
2420 eac3_demuxer_select="ac3_parser"
2421 f4v_muxer_select="mov_muxer"
2422 flac_demuxer_select="flac_parser"
2423 hds_muxer_select="flv_muxer"
2424 hls_muxer_select="mpegts_muxer"
2425 image2_alias_pix_demuxer_select="image2_demuxer"
2426 image2_brender_pix_demuxer_select="image2_demuxer"
2427 ipod_muxer_select="mov_muxer"
2428 ismv_muxer_select="mov_muxer"
2429 libnut_demuxer_deps="libnut"
2430 libnut_muxer_deps="libnut"
2431 matroska_audio_muxer_select="matroska_muxer"
2432 matroska_demuxer_select="riffdec"
2433 matroska_demuxer_suggest="bzlib lzo zlib"
2434 matroska_muxer_select="riffenc"
2435 mmf_muxer_select="riffenc"
2436 mov_demuxer_select="riffdec"
2437 mov_demuxer_suggest="zlib"
2438 mov_muxer_select="riffenc rtpenc_chain"
2439 mp3_demuxer_select="mpegaudio_parser"
2440 mp4_muxer_select="mov_muxer"
2441 mpegts_muxer_select="adts_muxer latm_muxer"
2442 mpegtsraw_demuxer_select="mpegts_demuxer"
2443 mxf_d10_muxer_select="mxf_muxer"
2444 nut_muxer_select="riffenc"
2445 nuv_demuxer_select="riffdec"
2446 oga_muxer_select="ogg_muxer"
2447 ogg_demuxer_select="golomb"
2448 opus_muxer_select="ogg_muxer"
2449 psp_muxer_select="mov_muxer"
2450 rtp_demuxer_select="sdp_demuxer"
2451 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2452 rtsp_demuxer_select="http_protocol rtpdec"
2453 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2454 sap_demuxer_select="sdp_demuxer"
2455 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2456 sdp_demuxer_select="rtpdec"
2457 smoothstreaming_muxer_select="ismv_muxer"
2458 spdif_muxer_select="aac_parser"
2459 spx_muxer_select="ogg_muxer"
2460 tak_demuxer_select="tak_parser"
2461 tg2_muxer_select="mov_muxer"
2462 tgp_muxer_select="mov_muxer"
2463 vobsub_demuxer_select="mpegps_demuxer"
2464 w64_demuxer_select="wav_demuxer"
2465 w64_muxer_select="wav_muxer"
2466 wav_demuxer_select="riffdec"
2467 wav_muxer_select="riffenc"
2468 webm_muxer_select="riffenc"
2469 wtv_demuxer_select="riffdec"
2470 wtv_muxer_select="riffenc"
2471 xmv_demuxer_select="riffdec"
2472 xwma_demuxer_select="riffdec"
2473
2474 # indevs / outdevs
2475 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2476 alsa_outdev_deps="alsa_asoundlib_h"
2477 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia -framework CoreGraphics"
2478 avfoundation_indev_select="avfoundation"
2479 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2480 caca_outdev_deps="libcaca"
2481 decklink_outdev_deps="decklink pthreads"
2482 decklink_outdev_extralibs="-lstdc++"
2483 decklink_indev_deps="decklink pthreads"
2484 decklink_indev_extralibs="-lstdc++"
2485 dshow_indev_deps="IBaseFilter"
2486 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2487 dv1394_indev_deps="dv1394"
2488 dv1394_indev_select="dv_demuxer"
2489 fbdev_indev_deps="linux_fb_h"
2490 fbdev_outdev_deps="linux_fb_h"
2491 gdigrab_indev_deps="CreateDIBSection"
2492 gdigrab_indev_extralibs="-lgdi32"
2493 gdigrab_indev_select="bmp_decoder"
2494 iec61883_indev_deps="libiec61883"
2495 jack_indev_deps="jack_jack_h sem_timedwait"
2496 lavfi_indev_deps="avfilter"
2497 libcdio_indev_deps="libcdio"
2498 libdc1394_indev_deps="libdc1394"
2499 libv4l2_indev_deps="libv4l2"
2500 openal_indev_deps="openal"
2501 opengl_outdev_deps="opengl"
2502 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2503 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2504 pulse_indev_deps="libpulse"
2505 pulse_outdev_deps="libpulse"
2506 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2507 qtkit_indev_select="qtkit"
2508 sdl_outdev_deps="sdl"
2509 sndio_indev_deps="sndio_h"
2510 sndio_outdev_deps="sndio_h"
2511 v4l_indev_deps="linux_videodev_h"
2512 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2513 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2514 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2515 vfwcap_indev_extralibs="-lavicap32"
2516 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2517 xv_outdev_extralibs="-lXv -lX11 -lXext"
2518 x11grab_indev_deps="x11grab"
2519 x11grab_xcb_indev_deps="libxcb"
2520
2521 # protocols
2522 bluray_protocol_deps="libbluray"
2523 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2524 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2525 ffrtmpcrypt_protocol_select="tcp_protocol"
2526 ffrtmphttp_protocol_deps="!librtmp_protocol"
2527 ffrtmphttp_protocol_select="http_protocol"
2528 ftp_protocol_select="tcp_protocol"
2529 gopher_protocol_select="network"
2530 http_protocol_select="tcp_protocol"
2531 httpproxy_protocol_select="tcp_protocol"
2532 https_protocol_select="tls_protocol"
2533 icecast_protocol_select="http_protocol"
2534 librtmp_protocol_deps="librtmp"
2535 librtmpe_protocol_deps="librtmp"
2536 librtmps_protocol_deps="librtmp"
2537 librtmpt_protocol_deps="librtmp"
2538 librtmpte_protocol_deps="librtmp"
2539 libsmbclient_protocol_deps="libsmbclient gplv3"
2540 libssh_protocol_deps="libssh"
2541 mmsh_protocol_select="http_protocol"
2542 mmst_protocol_select="network"
2543 rtmp_protocol_deps="!librtmp_protocol"
2544 rtmp_protocol_select="tcp_protocol"
2545 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2546 rtmps_protocol_deps="!librtmp_protocol"
2547 rtmps_protocol_select="tls_protocol"
2548 rtmpt_protocol_select="ffrtmphttp_protocol"
2549 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2550 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2551 rtp_protocol_select="udp_protocol"
2552 sctp_protocol_deps="struct_sctp_event_subscribe"
2553 sctp_protocol_select="network"
2554 srtp_protocol_select="rtp_protocol"
2555 tcp_protocol_select="network"
2556 tls_protocol_deps_any="openssl gnutls"
2557 tls_protocol_select="tcp_protocol"
2558 udp_protocol_select="network"
2559 udplite_protocol_select="network"
2560 unix_protocol_deps="sys_un_h"
2561 unix_protocol_select="network"
2562
2563 # filters
2564 amovie_filter_deps="avcodec avformat"
2565 aresample_filter_deps="swresample"
2566 ass_filter_deps="libass"
2567 asyncts_filter_deps="avresample"
2568 atempo_filter_deps="avcodec"
2569 atempo_filter_select="rdft"
2570 azmq_filter_deps="libzmq"
2571 blackframe_filter_deps="gpl"
2572 boxblur_filter_deps="gpl"
2573 bs2b_filter_deps="libbs2b"
2574 colormatrix_filter_deps="gpl"
2575 cropdetect_filter_deps="gpl"
2576 delogo_filter_deps="gpl"
2577 deshake_filter_select="pixelutils"
2578 drawtext_filter_deps="libfreetype"
2579 ebur128_filter_deps="gpl"
2580 flite_filter_deps="libflite"
2581 frei0r_filter_deps="frei0r dlopen"
2582 frei0r_src_filter_deps="frei0r dlopen"
2583 geq_filter_deps="gpl"
2584 histeq_filter_deps="gpl"
2585 hqdn3d_filter_deps="gpl"
2586 interlace_filter_deps="gpl"
2587 kerndeint_filter_deps="gpl"
2588 ladspa_filter_deps="ladspa dlopen"
2589 mcdeint_filter_deps="avcodec gpl"
2590 movie_filter_deps="avcodec avformat"
2591 mp_filter_deps="gpl avcodec swscale"
2592 mpdecimate_filter_deps="gpl"
2593 mpdecimate_filter_select="pixelutils"
2594 mptestsrc_filter_deps="gpl"
2595 negate_filter_deps="lut_filter"
2596 perspective_filter_deps="gpl"
2597 ocv_filter_deps="libopencv"
2598 owdenoise_filter_deps="gpl"
2599 pan_filter_deps="swresample"
2600 phase_filter_deps="gpl"
2601 pp_filter_deps="gpl postproc"
2602 pullup_filter_deps="gpl"
2603 removelogo_filter_deps="avcodec avformat swscale"
2604 resample_filter_deps="avresample"
2605 sab_filter_deps="gpl swscale"
2606 scale_filter_deps="swscale"
2607 select_filter_select="pixelutils"
2608 smartblur_filter_deps="gpl swscale"
2609 showspectrum_filter_deps="avcodec"
2610 showspectrum_filter_select="rdft"
2611 spp_filter_deps="gpl avcodec"
2612 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2613 stereo3d_filter_deps="gpl"
2614 subtitles_filter_deps="avformat avcodec libass"
2615 super2xsai_filter_deps="gpl"
2616 tinterlace_filter_deps="gpl"
2617 vidstabdetect_filter_deps="libvidstab"
2618 vidstabtransform_filter_deps="libvidstab"
2619 pixfmts_super2xsai_test_deps="super2xsai_filter"
2620 tinterlace_merge_test_deps="tinterlace_filter"
2621 tinterlace_pad_test_deps="tinterlace_filter"
2622 zmq_filter_deps="libzmq"
2623 zoompan_filter_deps="swscale"
2624
2625 # examples
2626 avio_reading="avformat avcodec avutil"
2627 avcodec_example_deps="avcodec avutil"
2628 decoding_encoding_example_deps="avcodec avformat avutil"
2629 demuxing_decoding_example_deps="avcodec avformat avutil"
2630 extract_mvs_example_deps="avcodec avformat avutil"
2631 filter_audio_example_deps="avfilter avutil"
2632 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2633 filtering_video_example_deps="avfilter avcodec avformat avutil"
2634 metadata_example_deps="avformat avutil"
2635 muxing_example_deps="avcodec avformat avutil swscale"
2636 remuxing_example_deps="avcodec avformat avutil"
2637 resampling_audio_example_deps="avutil swresample"
2638 scaling_video_example_deps="avutil swscale"
2639 transcode_aac_example_deps="avcodec avformat swresample"
2640 transcoding_example_deps="avfilter avcodec avformat avutil"
2641
2642 # libraries, in linking order
2643 avcodec_deps="avutil"
2644 avdevice_deps="avformat avcodec avutil"
2645 avfilter_deps="avutil"
2646 avformat_deps="avcodec avutil"
2647 avresample_deps="avutil"
2648 postproc_deps="avutil gpl"
2649 swresample_deps="avutil"
2650 swscale_deps="avutil"
2651
2652 # programs
2653 ffmpeg_deps="avcodec avfilter avformat swresample"
2654 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2655                null_filter
2656                setpts_filter trim_filter"
2657 ffplay_deps="avcodec avformat swscale swresample sdl"
2658 ffplay_libs='$sdl_libs'
2659 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2660 ffprobe_deps="avcodec avformat"
2661 ffserver_deps="avformat fork sarestart"
2662 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2663
2664 # documentation
2665 podpages_deps="perl"
2666 manpages_deps="perl pod2man"
2667 htmlpages_deps="perl"
2668 htmlpages_deps_any="makeinfo_html texi2html"
2669 txtpages_deps="perl makeinfo"
2670 doc_deps_any="manpages htmlpages podpages txtpages"
2671
2672 # default parameters
2673
2674 logfile="config.log"
2675
2676 # installation paths
2677 prefix_default="/usr/local"
2678 bindir_default='${prefix}/bin'
2679 datadir_default='${prefix}/share/ffmpeg'
2680 docdir_default='${prefix}/share/doc/ffmpeg'
2681 incdir_default='${prefix}/include'
2682 libdir_default='${prefix}/lib'
2683 mandir_default='${prefix}/share/man'
2684 shlibdir_default="$libdir_default"
2685
2686 # toolchain
2687 ar_default="ar"
2688 cc_default="gcc"
2689 cxx_default="g++"
2690 host_cc_default="gcc"
2691 cp_f="cp -f"
2692 doxygen_default="doxygen"
2693 install="install"
2694 ln_s="ln -s -f"
2695 nm_default="nm -g"
2696 objformat="elf"
2697 pkg_config_default=pkg-config
2698 ranlib_default="ranlib"
2699 strip_default="strip"
2700 yasmexe_default="yasm"
2701 windres_default="windres"
2702
2703 # OS
2704 target_os_default=$(tolower $(uname -s))
2705 host_os=$target_os_default
2706
2707 # machine
2708 if test "$target_os_default" = aix; then
2709     arch_default=$(uname -p)
2710     strip_default="strip -X32_64"
2711 else
2712     arch_default=$(uname -m)
2713 fi
2714 cpu="generic"
2715 intrinsics="none"
2716
2717 # configurable options
2718 enable $PROGRAM_LIST
2719 enable $DOCUMENT_LIST
2720 enable $EXAMPLE_LIST
2721 enable $(filter_out avresample $LIBRARY_LIST)
2722 enable stripping
2723
2724 enable asm
2725 enable debug
2726 enable doc
2727 enable faan faandct faanidct
2728 enable optimizations
2729 enable runtime_cpudetect
2730 enable safe_bitstream_reader
2731 enable static
2732 enable swscale_alpha
2733
2734 sws_max_filter_size_default=256
2735 set_default sws_max_filter_size
2736
2737 # Enable hwaccels by default.
2738 enable dxva2 vaapi vda vdpau xvmc
2739 enable xlib
2740
2741 # build settings
2742 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2743 LIBPREF="lib"
2744 LIBSUF=".a"
2745 FULLNAME='$(NAME)$(BUILDSUF)'
2746 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2747 SLIBPREF="lib"
2748 SLIBSUF=".so"
2749 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2750 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2751 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2752 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2753 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2754 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2755
2756 asflags_filter=echo
2757 cflags_filter=echo
2758 ldflags_filter=echo
2759
2760 AS_C='-c'
2761 AS_O='-o $@'
2762 CC_C='-c'
2763 CC_E='-E -o $@'
2764 CC_O='-o $@'
2765 CXX_C='-c'
2766 CXX_O='-o $@'
2767 LD_O='-o $@'
2768 LD_LIB='-l%'
2769 LD_PATH='-L'
2770 HOSTCC_C='-c'
2771 HOSTCC_E='-E -o $@'
2772 HOSTCC_O='-o $@'
2773 HOSTLD_O='-o $@'
2774
2775 host_libs='-lm'
2776 host_cflags_filter=echo
2777 host_ldflags_filter=echo
2778
2779 target_path='$(CURDIR)'
2780
2781 # since the object filename is not given with the -MM flag, the compiler
2782 # is only able to print the basename, and we must add the path ourselves
2783 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2784 DEPFLAGS='-MM'
2785
2786 # find source path
2787 if test -f configure; then
2788     source_path=.
2789 else
2790     source_path=$(cd $(dirname "$0"); pwd)
2791     echo "$source_path" | grep -q '[[:blank:]]' &&
2792         die "Out of tree builds are impossible with whitespace in source path."
2793     test -e "$source_path/config.h" &&
2794         die "Out of tree builds are impossible with config.h in source dir."
2795 fi
2796
2797 for v in "$@"; do
2798     r=${v#*=}
2799     l=${v%"$r"}
2800     r=$(sh_quote "$r")
2801     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2802 done
2803
2804 find_things(){
2805     thing=$1
2806     pattern=$2
2807     file=$source_path/$3
2808     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2809 }
2810
2811 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2812 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2813 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2814 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2815 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2816 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2817 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2818 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2819 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2820 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2821 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2822
2823 ALL_COMPONENTS="
2824     $BSF_LIST
2825     $DECODER_LIST
2826     $DEMUXER_LIST
2827     $ENCODER_LIST
2828     $FILTER_LIST
2829     $HWACCEL_LIST
2830     $INDEV_LIST
2831     $MUXER_LIST
2832     $OUTDEV_LIST
2833     $PARSER_LIST
2834     $PROTOCOL_LIST
2835 "
2836
2837 for n in $COMPONENT_LIST; do
2838     v=$(toupper ${n%s})_LIST
2839     eval enable \$$v
2840     eval ${n}_if_any="\$$v"
2841 done
2842
2843 enable $ARCH_EXT_LIST
2844
2845 die_unknown(){
2846     echo "Unknown option \"$1\"."
2847     echo "See $0 --help for available options."
2848     exit 1
2849 }
2850
2851 print_3_columns() {
2852     cat | tr ' ' '\n' | sort | pr -r -3 -t
2853 }
2854
2855 show_list() {
2856     suffix=_$1
2857     shift
2858     echo $* | sed s/$suffix//g | print_3_columns
2859     exit 0
2860 }
2861
2862 rand_list(){
2863     IFS=', '
2864     set -- $*
2865     unset IFS
2866     for thing; do
2867         comp=${thing%:*}
2868         prob=${thing#$comp}
2869         prob=${prob#:}
2870         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2871         echo "prob ${prob:-0.5}"
2872         printf '%s\n' $comp
2873     done
2874 }
2875
2876 do_random(){
2877     action=$1
2878     shift
2879     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2880     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2881 }
2882
2883 for opt do
2884     optval="${opt#*=}"
2885     case "$opt" in
2886         --extra-ldflags=*)
2887             add_ldflags $optval
2888         ;;
2889         --extra-ldexeflags=*)
2890             add_ldexeflags $optval
2891         ;;
2892         --extra-libs=*)
2893             add_extralibs $optval
2894         ;;
2895         --disable-devices)
2896             disable $INDEV_LIST $OUTDEV_LIST
2897         ;;
2898         --enable-debug=*)
2899             debuglevel="$optval"
2900         ;;
2901         --disable-programs)
2902             disable $PROGRAM_LIST
2903         ;;
2904         --disable-everything)
2905             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2906         ;;
2907         --disable-all)
2908             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2909             disable $LIBRARY_LIST $PROGRAM_LIST doc
2910         ;;
2911         --enable-random|--disable-random)
2912             action=${opt%%-random}
2913             do_random ${action#--} $COMPONENT_LIST
2914         ;;
2915         --enable-random=*|--disable-random=*)
2916             action=${opt%%-random=*}
2917             do_random ${action#--} $optval
2918         ;;
2919         --enable-*=*|--disable-*=*)
2920             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2921             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2922             eval list=\$$(toupper $thing)_LIST
2923             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2924             list=$(filter "$name" $list)
2925             [ "$list" = "" ] && warn "Option $opt did not match anything"
2926             $action $list
2927         ;;
2928         --enable-?*|--disable-?*)
2929             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2930             if is_in $option $COMPONENT_LIST; then
2931                 test $action = disable && action=unset
2932                 eval $action \$$(toupper ${option%s})_LIST
2933             elif is_in $option $CMDLINE_SELECT; then
2934                 $action $option
2935             else
2936                 die_unknown $opt
2937             fi
2938         ;;
2939         --list-*)
2940             NAME="${opt#--list-}"
2941             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2942             NAME=${NAME%s}
2943             eval show_list $NAME \$$(toupper $NAME)_LIST
2944         ;;
2945         --help|-h) show_help
2946         ;;
2947         --fatal-warnings) enable fatal_warnings
2948         ;;
2949         *)
2950             optname="${opt%%=*}"
2951             optname="${optname#--}"
2952             optname=$(echo "$optname" | sed 's/-/_/g')
2953             if is_in $optname $CMDLINE_SET; then
2954                 eval $optname='$optval'
2955             elif is_in $optname $CMDLINE_APPEND; then
2956                 append $optname "$optval"
2957             else
2958                 die_unknown $opt
2959             fi
2960         ;;
2961     esac
2962 done
2963
2964 disabled logging && logfile=/dev/null
2965
2966 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2967 set >> $logfile
2968
2969 test -n "$cross_prefix" && enable cross_compile
2970
2971 if enabled cross_compile; then
2972     test -n "$arch" && test -n "$target_os" ||
2973         die "Must specify target arch and OS when cross-compiling"
2974 fi
2975
2976 ar_default="${cross_prefix}${ar_default}"
2977 cc_default="${cross_prefix}${cc_default}"
2978 cxx_default="${cross_prefix}${cxx_default}"
2979 nm_default="${cross_prefix}${nm_default}"
2980 pkg_config_default="${cross_prefix}${pkg_config_default}"
2981 ranlib_default="${cross_prefix}${ranlib_default}"
2982 strip_default="${cross_prefix}${strip_default}"
2983 windres_default="${cross_prefix}${windres_default}"
2984
2985 sysinclude_default="${sysroot}/usr/include"
2986
2987 test -n "$valgrind" && toolchain="valgrind-memcheck"
2988
2989 case "$toolchain" in
2990     clang-asan)
2991         cc_default="clang"
2992         add_cflags  -fsanitize=address
2993         add_ldflags -fsanitize=address
2994     ;;
2995     clang-tsan)
2996         cc_default="clang"
2997         add_cflags  -fsanitize=thread -pie
2998         add_ldflags -fsanitize=thread -pie
2999     ;;
3000     clang-usan)
3001         cc_default="clang"
3002         add_cflags  -fsanitize=undefined
3003         add_ldflags -fsanitize=undefined
3004     ;;
3005     gcc-asan)
3006         cc_default="gcc"
3007         add_cflags  -fsanitize=address
3008         add_ldflags -fsanitize=address
3009     ;;
3010     gcc-tsan)
3011         cc_default="gcc"
3012         add_cflags  -fsanitize=thread -pie -fPIC
3013         add_ldflags -fsanitize=thread -pie -fPIC
3014     ;;
3015     gcc-usan)
3016         cc_default="gcc"
3017         add_cflags  -fsanitize=undefined
3018         add_ldflags -fsanitize=undefined
3019     ;;
3020     valgrind-massif)
3021         target_exec_default=${valgrind:-"valgrind"}
3022         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"
3023     ;;
3024     valgrind-memcheck)
3025         target_exec_default=${valgrind:-"valgrind"}
3026         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3027     ;;
3028     msvc)
3029         # Check whether the current MSVC version needs the C99 converter.
3030         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3031         # support enough of C99 to build ffmpeg. Default to the new
3032         # behaviour if the regexp was unable to match anything, since this
3033         # successfully parses the version number of existing supported
3034         # versions that require the converter (MSVC 2010 and 2012).
3035         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3036         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3037             cc_default="cl"
3038         else
3039             cc_default="c99wrap cl"
3040         fi
3041         ld_default="link"
3042         nm_default="dumpbin -symbols"
3043         ar_default="lib"
3044         target_os_default="win32"
3045         # Use a relative path for TMPDIR. This makes sure all the
3046         # ffconf temp files are written with a relative path, avoiding
3047         # issues with msys/win32 path conversion for MSVC parameters
3048         # such as -Fo<file> or -out:<file>.
3049         TMPDIR=.
3050     ;;
3051     icl)
3052         cc_default="icl"
3053         ld_default="xilink"
3054         nm_default="dumpbin -symbols"
3055         ar_default="xilib"
3056         target_os_default="win32"
3057         TMPDIR=.
3058     ;;
3059     gcov)
3060         add_cflags  -fprofile-arcs -ftest-coverage
3061         add_ldflags -fprofile-arcs -ftest-coverage
3062     ;;
3063     hardened)
3064         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3065         add_cflags   -fno-strict-overflow -fstack-protector-all
3066         add_ldflags  -Wl,-z,relro -Wl,-z,now
3067     ;;
3068     ?*)
3069         die "Unknown toolchain $toolchain"
3070     ;;
3071 esac
3072
3073 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3074     target_exec target_os yasmexe
3075 enabled cross_compile || host_cc_default=$cc
3076 set_default host_cc
3077
3078 pkg_config_fail_message=""
3079 if ! $pkg_config --version >/dev/null 2>&1; then
3080     warn "$pkg_config not found, library detection may fail."
3081     pkg_config=false
3082 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3083     pkg_config_fail_message="
3084 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3085 fi
3086
3087 if test $doxygen != $doxygen_default && \
3088   ! $doxygen --version >/dev/null 2>&1; then
3089     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3090 fi
3091
3092 exesuf() {
3093     case $1 in
3094         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3095     esac
3096 }
3097
3098 EXESUF=$(exesuf $target_os)
3099 HOSTEXESUF=$(exesuf $host_os)
3100
3101 # set temporary file name
3102 : ${TMPDIR:=$TEMPDIR}
3103 : ${TMPDIR:=$TMP}
3104 : ${TMPDIR:=/tmp}
3105
3106 if [ -n "$tempprefix" ] ; then
3107     mktemp(){
3108         echo $tempprefix.${HOSTNAME}.${UID}
3109     }
3110 elif ! check_cmd mktemp -u XXXXXX; then
3111     # simple replacement for missing mktemp
3112     # NOT SAFE FOR GENERAL USE
3113     mktemp(){
3114         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3115     }
3116 fi
3117
3118 tmpfile(){
3119     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3120         (set -C; exec > $tmp) 2>/dev/null ||
3121         die "Unable to create temporary file in $TMPDIR."
3122     append TMPFILES $tmp
3123     eval $1=$tmp
3124 }
3125
3126 trap 'rm -f -- $TMPFILES' EXIT
3127
3128 tmpfile TMPASM .asm
3129 tmpfile TMPC   .c
3130 tmpfile TMPCPP .cpp
3131 tmpfile TMPE   $EXESUF
3132 tmpfile TMPH   .h
3133 tmpfile TMPM   .m
3134 tmpfile TMPO   .o
3135 tmpfile TMPS   .S
3136 tmpfile TMPSH  .sh
3137 tmpfile TMPV   .ver
3138
3139 unset -f mktemp
3140
3141 chmod +x $TMPE
3142
3143 # make sure we can execute files in $TMPDIR
3144 cat > $TMPSH 2>> $logfile <<EOF
3145 #! /bin/sh
3146 EOF
3147 chmod +x $TMPSH >> $logfile 2>&1
3148 if ! $TMPSH >> $logfile 2>&1; then
3149     cat <<EOF
3150 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3151 variable to another directory and make sure that it is not mounted noexec.
3152 EOF
3153     die "Sanity test failed."
3154 fi
3155
3156 armasm_flags(){
3157     for flag; do
3158         case $flag in
3159             # Filter out MSVC cl.exe options from cflags that shouldn't
3160             # be passed to gas-preprocessor
3161             -M[TD]*)                                            ;;
3162             *)                  echo $flag                      ;;
3163         esac
3164    done
3165 }
3166
3167 ccc_flags(){
3168     for flag; do
3169         case $flag in
3170             -std=c99)           echo -c99                       ;;
3171             -mcpu=*)            echo -arch ${flag#*=}           ;;
3172             -mieee)             echo -ieee                      ;;
3173             -O*|-fast)          echo $flag                      ;;
3174             -fno-math-errno)    echo -assume nomath_errno       ;;
3175             -g)                 echo -g3                        ;;
3176             -Wall)              echo -msg_enable level2         ;;
3177             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3178             -Wl,*)              echo $flag                      ;;
3179             -f*|-W*)                                            ;;
3180             *)                  echo $flag                      ;;
3181         esac
3182    done
3183 }
3184
3185 cparser_flags(){
3186     for flag; do
3187         case $flag in
3188             -Wno-switch)             echo -Wno-switch-enum ;;
3189             -Wno-format-zero-length) ;;
3190             -Wdisabled-optimization) ;;
3191             -Wno-pointer-sign)       echo -Wno-other ;;
3192             *)                       echo $flag ;;
3193         esac
3194     done
3195 }
3196
3197 msvc_common_flags(){
3198     for flag; do
3199         case $flag in
3200             # In addition to specifying certain flags under the compiler
3201             # specific filters, they must be specified here as well or else the
3202             # generic catch all at the bottom will print the original flag.
3203             -Wall)                ;;
3204             -std=c99)             ;;
3205             # Common flags
3206             -fomit-frame-pointer) ;;
3207             -g)                   echo -Z7 ;;
3208             -fno-math-errno)      ;;
3209             -fno-common)          ;;
3210             -fno-signed-zeros)    ;;
3211             -fPIC)                ;;
3212             -mthumb)              ;;
3213             -march=*)             ;;
3214             -lz)                  echo zlib.lib ;;
3215             -lavifil32)           echo vfw32.lib ;;
3216             -lavicap32)           echo vfw32.lib user32.lib ;;
3217             -l*)                  echo ${flag#-l}.lib ;;
3218             *)                    echo $flag ;;
3219         esac
3220     done
3221 }
3222
3223 msvc_flags(){
3224     msvc_common_flags "$@"
3225     for flag; do
3226         case $flag in
3227             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3228                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3229                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3230                                        -wd4554 \
3231                                        -wd4273 -wd4701 ;;
3232         esac
3233     done
3234 }
3235
3236 icl_flags(){
3237     msvc_common_flags "$@"
3238     for flag; do
3239         case $flag in
3240             # Despite what Intel's documentation says -Wall, which is supported
3241             # on Windows, does enable remarks so disable them here.
3242             -Wall)                echo $flag -Qdiag-disable:remark ;;
3243             -std=c99)             echo -Qstd=c99 ;;
3244             -flto)                echo -ipo ;;
3245         esac
3246     done
3247 }
3248
3249 icc_flags(){
3250     for flag; do
3251         case $flag in
3252             -flto)                echo -ipo ;;
3253             *)                    echo $flag ;;
3254         esac
3255     done
3256 }
3257
3258 pgi_flags(){
3259     for flag; do
3260         case $flag in
3261             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3262             -fomit-frame-pointer) echo -Mnoframe ;;
3263             -g)                   echo -gopt ;;
3264             *)                    echo $flag ;;
3265         esac
3266     done
3267 }
3268
3269 suncc_flags(){
3270     for flag; do
3271         case $flag in
3272             -march=*|-mcpu=*)
3273                 case "${flag#*=}" in
3274                     native)                   echo -xtarget=native       ;;
3275                     v9|niagara)               echo -xarch=sparc          ;;
3276                     ultrasparc)               echo -xarch=sparcvis       ;;
3277                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3278                     i586|pentium)             echo -xchip=pentium        ;;
3279                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3280                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3281                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3282                     pentium4*)          echo -xtarget=pentium4           ;;
3283                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3284                     *-sse3)             echo -xarch=sse3                 ;;
3285                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3286                     bonnell)                   echo -xarch=ssse3         ;;
3287                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3288                     westmere)                  echo -xtarget=westmere    ;;
3289                     silvermont)                echo -xarch=sse4_2        ;;
3290                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3291                     core-avx*|ivybridge|haswell|broadwell)
3292                                                echo -xarch=avx           ;;
3293                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3294                     btver1)                    echo -xarch=amdsse4a      ;;
3295                     btver2|bdver*)             echo -xarch=avx           ;;
3296                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3297                     k8|opteron|athlon64|athlon-fx)
3298                                                echo -xarch=sse2a         ;;
3299                     athlon*)                   echo -xarch=pentium_proa  ;;
3300                 esac
3301                 ;;
3302             -std=c99)             echo -xc99              ;;
3303             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3304             -fPIC)                echo -KPIC -xcode=pic32 ;;
3305             -W*,*)                echo $flag              ;;
3306             -f*-*|-W*|-mimpure-text)                      ;;
3307             -shared)              echo -G                 ;;
3308             *)                    echo $flag              ;;
3309         esac
3310     done
3311 }
3312
3313 tms470_flags(){
3314     for flag; do
3315         case $flag in
3316             -march=*|-mcpu=*)
3317                 case "${flag#*=}" in
3318                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3319                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3320                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3321                     armv6*|arm11*)          echo -mv=6   ;;
3322                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3323                                             echo -mv=5e  ;;
3324                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3325                 esac
3326                 ;;
3327             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3328             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3329             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3330             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3331             -msoft-float)   echo --float_support=vfplib       ;;
3332             -O[0-3]|-mf=*)  echo $flag                        ;;
3333             -g)             echo -g -mn                       ;;
3334             -pds=*)         echo $flag                        ;;
3335             -D*|-I*)        echo $flag                        ;;
3336             --gcc|--abi=*)  echo $flag                        ;;
3337             -me)            echo $flag                        ;;
3338         esac
3339     done
3340 }
3341
3342 probe_cc(){
3343     pfx=$1
3344     _cc=$2
3345
3346     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3347     unset _ld_o _ldflags _ld_lib _ld_path
3348     unset _depflags _DEPCMD _DEPFLAGS
3349     _flags_filter=echo
3350
3351     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3352         true # no-op to avoid reading stdin in following checks
3353     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3354         _type=llvm_gcc
3355         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3356         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3357         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3358         _cflags_speed='-O3'
3359         _cflags_size='-Os'
3360     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3361         _type=gcc
3362         gcc_version=$($_cc --version | head -n1)
3363         gcc_basever=$($_cc -dumpversion)
3364         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3365         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3366         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3367         if ! $_cc -dumpversion | grep -q '^2\.'; then
3368             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3369         fi
3370         _cflags_speed='-O3'
3371         _cflags_size='-Os'
3372     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3373         _type=icc
3374         _ident=$($_cc --version | head -n1)
3375         _depflags='-MMD'
3376         _cflags_speed='-O3'
3377         _cflags_size='-Os'
3378         _cflags_noopt='-O1'
3379         _flags_filter=icc_flags
3380     elif $_cc -v 2>&1 | grep -q xlc; then
3381         _type=xlc
3382         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3383         _cflags_speed='-O5'
3384         _cflags_size='-O5 -qcompact'
3385     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3386         _type=ccc
3387         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3388         _DEPFLAGS='-M'
3389         _cflags_speed='-fast'
3390         _cflags_size='-O1'
3391         _flags_filter=ccc_flags
3392     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3393         test -d "$sysroot" || die "No valid sysroot specified."
3394         _type=armcc
3395         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3396         armcc_conf="$PWD/armcc.conf"
3397         $_cc --arm_linux_configure                 \
3398              --arm_linux_config_file="$armcc_conf" \
3399              --configure_sysroot="$sysroot"        \
3400              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3401              die "Error creating armcc configuration file."
3402         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3403         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3404         as_default="${cross_prefix}gcc"
3405         _depflags='-MMD'
3406         _cflags_speed='-O3'
3407         _cflags_size='-Os'
3408     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3409         _type=tms470
3410         _ident=$($_cc -version | head -n1 | tr -s ' ')
3411         _flags='--gcc --abi=eabi -me'
3412         _cc_e='-ppl -fe=$@'
3413         _cc_o='-fe=$@'
3414         _depflags='-ppa -ppd=$(@:.o=.d)'
3415         _cflags_speed='-O3 -mf=5'
3416         _cflags_size='-O3 -mf=2'
3417         _flags_filter=tms470_flags
3418     elif $_cc -v 2>&1 | grep -q clang; then
3419         _type=clang
3420         _ident=$($_cc --version | head -n1)
3421         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3422         _cflags_speed='-O3'
3423         _cflags_size='-Os'
3424     elif $_cc -V 2>&1 | grep -q Sun; then
3425         _type=suncc
3426         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3427         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3428         _DEPFLAGS='-xM1 -xc99'
3429         _ldflags='-std=c99'
3430         _cflags_speed='-O5'
3431         _cflags_size='-O5 -xspace'
3432         _flags_filter=suncc_flags
3433     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3434         _type=pathscale
3435         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3436         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3437         _cflags_speed='-O2'
3438         _cflags_size='-Os'
3439         _flags_filter='filter_out -Wdisabled-optimization'
3440     elif $_cc -v 2>&1 | grep -q Open64; then
3441         _type=open64
3442         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3443         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3444         _cflags_speed='-O2'
3445         _cflags_size='-Os'
3446         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3447     elif $_cc -V 2>&1 | grep -q Portland; then
3448         _type=pgi
3449         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3450         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3451         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3452         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3453         _cflags_noopt="-O"
3454         _flags_filter=pgi_flags
3455     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3456         _type=armasm
3457         _ident=$($_cc | head -n1)
3458         # 4509: "This form of conditional instruction is deprecated"
3459         _flags="-nologo -ignore 4509"
3460         _flags_filter=armasm_flags
3461     elif $_cc 2>&1 | grep -q Intel; then
3462         _type=icl
3463         _ident=$($cc 2>&1 | head -n1)
3464         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3465         # Not only is O3 broken on 13.x+ but it is slower on all previous
3466         # versions (tested) as well.
3467         _cflags_speed="-O2"
3468         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3469         if $_cc 2>&1 | grep -q Linker; then
3470             _ld_o='-out:$@'
3471         else
3472             _ld_o='-Fe$@'
3473         fi
3474         _cc_o='-Fo$@'
3475         _cc_e='-P'
3476         _flags_filter=icl_flags
3477         _ld_lib='lib%.a'
3478         _ld_path='-libpath:'
3479         # -Qdiag-error to make icl error when seeing certain unknown arguments
3480         _flags='-nologo -Qdiag-error:4044,10157'
3481         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3482         # with MSVC which enables it by default.
3483         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3484         if [ $pfx = hostcc ]; then
3485             append _cflags -Dsnprintf=_snprintf
3486         fi
3487         disable stripping
3488     elif $_cc 2>&1 | grep -q Microsoft; then
3489         _type=msvc
3490         _ident=$($cc 2>&1 | head -n1)
3491         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3492         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3493         _cflags_speed="-O2"
3494         _cflags_size="-O1"
3495         if $_cc 2>&1 | grep -q Linker; then
3496             _ld_o='-out:$@'
3497         else
3498             _ld_o='-Fe$@'
3499         fi
3500         _cc_o='-Fo$@'
3501         _cc_e='-P -Fi$@'
3502         _flags_filter=msvc_flags
3503         _ld_lib='lib%.a'
3504         _ld_path='-libpath:'
3505         _flags='-nologo'
3506         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3507         if [ $pfx = hostcc ]; then
3508             append _cflags -Dsnprintf=_snprintf
3509         fi
3510         disable stripping
3511     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3512         _type=cparser
3513         _ident=$($_cc --version | head -n1)
3514         _depflags='-MMD'
3515         _cflags_speed='-O4'
3516         _cflags_size='-O2'
3517         _flags_filter=cparser_flags
3518     fi
3519
3520     eval ${pfx}_type=\$_type
3521     eval ${pfx}_ident=\$_ident
3522 }
3523
3524 set_ccvars(){
3525     eval ${1}_C=\${_cc_c-\${${1}_C}}
3526     eval ${1}_E=\${_cc_e-\${${1}_E}}
3527     eval ${1}_O=\${_cc_o-\${${1}_O}}
3528
3529     if [ -n "$_depflags" ]; then
3530         eval ${1}_DEPFLAGS=\$_depflags
3531     else
3532         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3533         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3534         eval DEP${1}FLAGS=\$_flags
3535     fi
3536 }
3537
3538 probe_cc cc "$cc"
3539 cflags_filter=$_flags_filter
3540 cflags_speed=$_cflags_speed
3541 cflags_size=$_cflags_size
3542 cflags_noopt=$_cflags_noopt
3543 add_cflags $_flags $_cflags
3544 cc_ldflags=$_ldflags
3545 set_ccvars CC
3546
3547 probe_cc hostcc "$host_cc"
3548 host_cflags_filter=$_flags_filter
3549 add_host_cflags  $_flags $_cflags
3550 set_ccvars HOSTCC
3551
3552 test -n "$cc_type" && enable $cc_type ||
3553     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3554
3555 : ${as_default:=$cc}
3556 : ${dep_cc_default:=$cc}
3557 : ${ld_default:=$cc}
3558 : ${host_ld_default:=$host_cc}
3559 set_default ar as dep_cc ld host_ld windres
3560
3561 probe_cc as "$as"
3562 asflags_filter=$_flags_filter
3563 add_asflags $_flags $_cflags
3564 set_ccvars AS
3565
3566 probe_cc ld "$ld"
3567 ldflags_filter=$_flags_filter
3568 add_ldflags $_flags $_ldflags
3569 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3570 LD_O=${_ld_o-$LD_O}
3571 LD_LIB=${_ld_lib-$LD_LIB}
3572 LD_PATH=${_ld_path-$LD_PATH}
3573
3574 probe_cc hostld "$host_ld"
3575 host_ldflags_filter=$_flags_filter
3576 add_host_ldflags $_flags $_ldflags
3577 HOSTLD_O=${_ld_o-$HOSTLD_O}
3578
3579 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3580     probe_cc depcc "$dep_cc"
3581     CCDEP=${_DEPCMD:-$DEPCMD}
3582     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3583     DEPCCFLAGS=$_flags
3584 fi
3585
3586 if $ar 2>&1 | grep -q Microsoft; then
3587     arflags="-nologo"
3588     ar_o='-out:$@'
3589 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3590     arflags="rq"
3591     ar_o='$@'
3592 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3593     arflags='-Xany -r -c'
3594     ar_o='$@'
3595 else
3596     arflags="rc"
3597     ar_o='$@'
3598 fi
3599
3600 add_cflags $extra_cflags
3601 add_cxxflags $extra_cxxflags
3602 add_asflags $extra_cflags
3603
3604 if test -n "$sysroot"; then
3605     case "$cc_type" in
3606         gcc|llvm_gcc|clang)
3607             add_cppflags --sysroot="$sysroot"
3608             add_ldflags --sysroot="$sysroot"
3609 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3610             add_cppflags -isysroot "$sysroot"
3611             add_ldflags -isysroot "$sysroot"
3612         ;;
3613         tms470)
3614             add_cppflags -I"$sysinclude"
3615             add_ldflags  --sysroot="$sysroot"
3616         ;;
3617     esac
3618 fi
3619
3620 if test "$cpu" = host; then
3621     enabled cross_compile &&
3622         die "--cpu=host makes no sense when cross-compiling."
3623
3624     case "$cc_type" in
3625         gcc|llvm_gcc)
3626             check_native(){
3627                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3628                 sed -n "/cc1.*$1=/{
3629                             s/.*$1=\\([^ ]*\\).*/\\1/
3630                             p
3631                             q
3632                         }" $TMPE
3633             }
3634             cpu=$(check_native -march || check_native -mcpu)
3635         ;;
3636     esac
3637
3638     test "${cpu:-host}" = host &&
3639         die "--cpu=host not supported with compiler $cc"
3640 fi
3641
3642 # Deal with common $arch aliases
3643 case "$arch" in
3644     aarch64|arm64)
3645         arch="aarch64"
3646     ;;
3647     arm*|iPad*|iPhone*)
3648         arch="arm"
3649     ;;
3650     mips*|IP*)
3651         arch="mips"
3652     ;;
3653     parisc*|hppa*)
3654         arch="parisc"
3655     ;;
3656     "Power Macintosh"|ppc*|powerpc*)
3657         arch="ppc"
3658     ;;
3659     s390|s390x)
3660         arch="s390"
3661     ;;
3662     sh4|sh)
3663         arch="sh4"
3664     ;;
3665     sun4u|sparc*)
3666         arch="sparc"
3667     ;;
3668     tilegx|tile-gx)
3669         arch="tilegx"
3670     ;;
3671     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3672         arch="x86"
3673     ;;
3674 esac
3675
3676 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3677 enable $arch
3678
3679 # Add processor-specific flags
3680 if enabled aarch64; then
3681
3682     case $cpu in
3683         armv*)
3684             cpuflags="-march=$cpu"
3685         ;;
3686         *)
3687             cpuflags="-mcpu=$cpu"
3688         ;;
3689     esac
3690
3691 elif enabled alpha; then
3692
3693     cpuflags="-mcpu=$cpu"
3694
3695 elif enabled arm; then
3696
3697     check_arm_arch() {
3698         check_cpp_condition stddef.h \
3699             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3700             $cpuflags
3701     }
3702
3703     probe_arm_arch() {
3704         if   check_arm_arch 4;        then echo armv4;
3705         elif check_arm_arch 4T;       then echo armv4t;
3706         elif check_arm_arch 5;        then echo armv5;
3707         elif check_arm_arch 5E;       then echo armv5e;
3708         elif check_arm_arch 5T;       then echo armv5t;
3709         elif check_arm_arch 5TE;      then echo armv5te;
3710         elif check_arm_arch 5TEJ;     then echo armv5te;
3711         elif check_arm_arch 6;        then echo armv6;
3712         elif check_arm_arch 6J;       then echo armv6j;
3713         elif check_arm_arch 6K;       then echo armv6k;
3714         elif check_arm_arch 6Z;       then echo armv6z;
3715         elif check_arm_arch 6ZK;      then echo armv6zk;
3716         elif check_arm_arch 6T2;      then echo armv6t2;
3717         elif check_arm_arch 7;        then echo armv7;
3718         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3719         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3720         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3721         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3722         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3723         fi
3724     }
3725
3726     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3727
3728     case $cpu in
3729         armv*)
3730             cpuflags="-march=$cpu"
3731             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3732         ;;
3733         *)
3734             cpuflags="-mcpu=$cpu"
3735             case $cpu in
3736                 cortex-a*)                               subarch=armv7a  ;;
3737                 cortex-r*)                               subarch=armv7r  ;;
3738                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3739                 arm11*)                                  subarch=armv6   ;;
3740                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3741                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3742                 *)                             subarch=$(probe_arm_arch) ;;
3743             esac
3744         ;;
3745     esac
3746
3747     case "$subarch" in
3748         armv5t*)    enable fast_clz                ;;
3749         armv[6-8]*)
3750             enable fast_clz
3751             disabled fast_unaligned || enable fast_unaligned
3752             ;;
3753     esac
3754
3755 elif enabled avr32; then
3756
3757     case $cpu in
3758         ap7[02]0[0-2])
3759             subarch="avr32_ap"
3760             cpuflags="-mpart=$cpu"
3761         ;;
3762         ap)
3763             subarch="avr32_ap"
3764             cpuflags="-march=$cpu"
3765         ;;
3766         uc3[ab]*)
3767             subarch="avr32_uc"
3768             cpuflags="-mcpu=$cpu"
3769         ;;
3770         uc)
3771             subarch="avr32_uc"
3772             cpuflags="-march=$cpu"
3773         ;;
3774     esac
3775
3776 elif enabled bfin; then
3777
3778     cpuflags="-mcpu=$cpu"
3779
3780 elif enabled mips; then
3781
3782     cpuflags="-march=$cpu"
3783
3784     case $cpu in
3785         24kc)
3786             disable mipsfpu
3787             disable mipsdspr1
3788             disable mipsdspr2
3789         ;;
3790         24kf*)
3791             disable mipsdspr1
3792             disable mipsdspr2
3793         ;;
3794         24kec|34kc|1004kc)
3795             disable mipsfpu
3796             disable mipsdspr2
3797         ;;
3798         24kef*|34kf*|1004kf*)
3799             disable mipsdspr2
3800         ;;
3801         74kc)
3802             disable mipsfpu
3803         ;;
3804     esac
3805
3806 elif enabled ppc; then
3807
3808     disable ldbrx
3809     disable vsx
3810
3811     case $(tolower $cpu) in
3812         601|ppc601|powerpc601)
3813             cpuflags="-mcpu=601"
3814             disable altivec
3815         ;;
3816         603*|ppc603*|powerpc603*)
3817             cpuflags="-mcpu=603"
3818             disable altivec
3819         ;;
3820         604*|ppc604*|powerpc604*)
3821             cpuflags="-mcpu=604"
3822             disable altivec
3823         ;;
3824         g3|75*|ppc75*|powerpc75*)
3825             cpuflags="-mcpu=750"
3826             disable altivec
3827         ;;
3828         g4|745*|ppc745*|powerpc745*)
3829             cpuflags="-mcpu=7450"
3830         ;;
3831         74*|ppc74*|powerpc74*)
3832             cpuflags="-mcpu=7400"
3833         ;;
3834         g5|970|ppc970|powerpc970)
3835             cpuflags="-mcpu=970"
3836         ;;
3837         power[3-8]*)
3838             cpuflags="-mcpu=$cpu"
3839         ;;
3840         cell)
3841             cpuflags="-mcpu=cell"
3842             enable ldbrx
3843         ;;
3844         e500mc)
3845             cpuflags="-mcpu=e500mc"
3846             disable altivec
3847         ;;
3848         e500v2)
3849             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3850             disable altivec
3851             disable dcbzl
3852         ;;
3853         e500)
3854             cpuflags="-mcpu=8540 -mhard-float"
3855             disable altivec
3856             disable dcbzl
3857         ;;
3858     esac
3859
3860 elif enabled sparc; then
3861
3862     case $cpu in
3863         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3864             cpuflags="-mcpu=$cpu"
3865         ;;
3866         ultrasparc*|niagara[234])
3867             cpuflags="-mcpu=$cpu"
3868         ;;
3869     esac
3870
3871 elif enabled x86; then
3872
3873     case $cpu in
3874         i[345]86|pentium)
3875             cpuflags="-march=$cpu"
3876             disable i686
3877             disable mmx
3878         ;;
3879         # targets that do NOT support nopl and conditional mov (cmov)
3880         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3881             cpuflags="-march=$cpu"
3882             disable i686
3883         ;;
3884         # targets that do support nopl and conditional mov (cmov)
3885         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3886         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3887             cpuflags="-march=$cpu"
3888             enable i686
3889             enable fast_cmov
3890         ;;
3891         # targets that do support conditional mov but on which it's slow
3892         pentium4|pentium4m|prescott|nocona)
3893             cpuflags="-march=$cpu"
3894             enable i686
3895             disable fast_cmov
3896         ;;
3897     esac
3898
3899 fi
3900
3901 if [ "$cpu" != generic ]; then
3902     add_cflags  $cpuflags
3903     add_asflags $cpuflags
3904 fi
3905
3906 # compiler sanity check
3907 check_exec <<EOF
3908 int main(void){ return 0; }
3909 EOF
3910 if test "$?" != 0; then
3911     echo "$cc is unable to create an executable file."
3912     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3913         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3914         echo "Only do this if you know what cross compiling means."
3915     fi
3916     die "C compiler test failed."
3917 fi
3918
3919 add_cppflags -D_ISOC99_SOURCE
3920 add_cxxflags -D__STDC_CONSTANT_MACROS
3921 check_cflags -std=c99
3922 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3923 #include <stdlib.h>
3924 EOF
3925 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3926 #include <stdlib.h>
3927 EOF
3928
3929 add_host_cppflags -D_ISOC99_SOURCE
3930 check_host_cflags -std=c99
3931 check_host_cflags -Wall
3932 check_host_cflags -O3
3933
3934 check_64bit(){
3935     arch32=$1
3936     arch64=$2
3937     expr=$3
3938     check_code cc "" "int test[2*($expr) - 1]" &&
3939         subarch=$arch64 || subarch=$arch32
3940 }
3941
3942 case "$arch" in
3943     aarch64|alpha|ia64)
3944         spic=$shared
3945     ;;
3946     mips)
3947         check_64bit mips mips64 '_MIPS_SIM > 1'
3948         spic=$shared
3949     ;;
3950     parisc)
3951         check_64bit parisc parisc64 'sizeof(void *) > 4'
3952         spic=$shared
3953     ;;
3954     ppc)
3955         check_64bit ppc ppc64 'sizeof(void *) > 4'
3956         spic=$shared
3957     ;;
3958     s390)
3959         check_64bit s390 s390x 'sizeof(void *) > 4'
3960         spic=$shared
3961     ;;
3962     sparc)
3963         check_64bit sparc sparc64 'sizeof(void *) > 4'
3964         spic=$shared
3965     ;;
3966     x86)
3967         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3968         # Treat x32 as x64 for now. Note it also needs spic=$shared
3969         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
3970             subarch=x86_64
3971         if test "$subarch" = "x86_64"; then
3972             spic=$shared
3973         fi
3974     ;;
3975     ppc)
3976         check_cc <<EOF && subarch="ppc64"
3977         int test[(int)sizeof(char*) - 7];
3978 EOF
3979     ;;
3980 esac
3981
3982 enable $subarch
3983 enabled spic && enable_weak pic
3984
3985 # OS specific
3986 case $target_os in
3987     aix)
3988         SHFLAGS=-shared
3989         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3990         enabled shared && add_ldflags -Wl,-brtl
3991         ;;
3992     android)
3993         disable symver
3994         enable section_data_rel_ro
3995         SLIB_INSTALL_NAME='$(SLIBNAME)'
3996         SLIB_INSTALL_LINKS=
3997         # soname not set on purpose
3998         SHFLAGS=-shared
3999         ;;
4000     haiku)
4001         prefix_default="/boot/common"
4002         network_extralibs="-lnetwork"
4003         host_libs=
4004         ;;
4005     sunos)
4006         SHFLAGS='-shared -Wl,-h,$$(@F)'
4007         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4008         network_extralibs="-lsocket -lnsl"
4009         # When using suncc to build, the Solaris linker will mark
4010         # an executable with each instruction set encountered by
4011         # the Solaris assembler.  As our libraries contain their own
4012         # guards for processor-specific code, instead suppress
4013         # generation of the HWCAPS ELF section on Solaris x86 only.
4014         enabled_all suncc x86 &&
4015             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4016             add_ldflags -Wl,-M,mapfile
4017         nm_default='nm -P -g'
4018         ;;
4019     netbsd)
4020         disable symver
4021         oss_indev_extralibs="-lossaudio"
4022         oss_outdev_extralibs="-lossaudio"
4023         enabled gcc || check_ldflags -Wl,-zmuldefs
4024         ;;
4025     openbsd|bitrig)
4026         disable symver
4027         SHFLAGS='-shared'
4028         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4029         SLIB_INSTALL_LINKS=
4030         oss_indev_extralibs="-lossaudio"
4031         oss_outdev_extralibs="-lossaudio"
4032         ;;
4033     dragonfly)
4034         disable symver
4035         ;;
4036     freebsd)
4037         ;;
4038     bsd/os)
4039         add_extralibs -lpoll -lgnugetopt
4040         strip="strip -d"
4041         ;;
4042     darwin)
4043         enabled ppc && add_asflags -force_cpusubtype_ALL
4044         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4045         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4046         strip="${strip} -x"
4047         add_ldflags -Wl,-dynamic,-search_paths_first
4048         SLIBSUF=".dylib"
4049         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4050         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4051         objformat="macho"
4052         enabled x86_64 && objformat="macho64"
4053         enabled_any pic shared ||
4054             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4055         ;;
4056     mingw32*)
4057         if test $target_os = "mingw32ce"; then
4058             disable network
4059         else
4060             target_os=mingw32
4061         fi
4062         LIBTARGET=i386
4063         if enabled x86_64; then
4064             LIBTARGET="i386:x86-64"
4065         elif enabled arm; then
4066             LIBTARGET=arm-wince
4067         fi
4068         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4069         check_ldflags -Wl,--nxcompat
4070         check_ldflags -Wl,--dynamicbase
4071         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4072         shlibdir_default="$bindir_default"
4073         SLIBPREF=""
4074         SLIBSUF=".dll"
4075         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4076         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4077         dlltool="${cross_prefix}dlltool"
4078         if check_cmd lib.exe -list; then
4079             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4080             if enabled x86_64; then
4081                 LIBTARGET=x64
4082             fi
4083         elif check_cmd $dlltool --version; then
4084             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4085         fi
4086         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4087         SLIB_INSTALL_LINKS=
4088         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4089         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4090         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4091         objformat="win32"
4092         ranlib=:
4093         enable dos_paths
4094         ;;
4095     win32|win64)
4096         disable symver
4097         if enabled shared; then
4098             # Link to the import library instead of the normal static library
4099             # for shared libs.
4100             LD_LIB='%.lib'
4101             # Cannot build both shared and static libs with MSVC or icl.
4102             disable static
4103         fi
4104         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4105         shlibdir_default="$bindir_default"
4106         SLIBPREF=""
4107         SLIBSUF=".dll"
4108         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4109         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4110         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4111         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4112         SLIB_INSTALL_LINKS=
4113         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4114         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4115         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4116         objformat="win32"
4117         ranlib=:
4118         enable dos_paths
4119         ;;
4120     cygwin*)
4121         target_os=cygwin
4122         shlibdir_default="$bindir_default"
4123         SLIBPREF="cyg"
4124         SLIBSUF=".dll"
4125         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4126         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4127         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4128         SLIB_INSTALL_LINKS=
4129         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4130         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4131         objformat="win32"
4132         enable dos_paths
4133         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4134         ;;
4135     *-dos|freedos|opendos)
4136         network_extralibs="-lsocket"
4137         objformat="coff"
4138         enable dos_paths
4139         add_cppflags -U__STRICT_ANSI__
4140         ;;
4141     linux)
4142         enable dv1394
4143         enable section_data_rel_ro
4144         ;;
4145     irix*)
4146         target_os=irix
4147         ranlib="echo ignoring ranlib"
4148         ;;
4149     os/2*)
4150         strip="lxlite -CS"
4151         ln_s="cp -f"
4152         objformat="aout"
4153         add_cppflags -D_GNU_SOURCE
4154         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4155         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4156         LIBSUF="_s.a"
4157         SLIBPREF=""
4158         SLIBSUF=".dll"
4159         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4160         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4161         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4162             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4163             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4164             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4165             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4166             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4167         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4168             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4169         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4170         enable dos_paths
4171         enable_weak os2threads
4172         ;;
4173     gnu/kfreebsd)
4174         add_cppflags -D_BSD_SOURCE
4175         ;;
4176     gnu)
4177         ;;
4178     qnx)
4179         add_cppflags -D_QNX_SOURCE
4180         network_extralibs="-lsocket"
4181         ;;
4182     symbian)
4183         SLIBSUF=".dll"
4184         enable dos_paths
4185         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4186         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4187         add_ldflags -Wl,--target1-abs,--no-undefined \
4188                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4189                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4190         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4191                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4192                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4193         ;;
4194     osf1)
4195         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4196         ;;
4197     minix)
4198         ;;
4199     plan9)
4200         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4201                      -D_REENTRANT_SOURCE        \
4202                      -D_RESEARCH_SOURCE         \
4203                      -DFD_SETSIZE=96            \
4204                      -DHAVE_SOCK_OPTS
4205         add_compat strtod.o strtod=avpriv_strtod
4206         network_extralibs='-lbsd'
4207         exeobjs=compat/plan9/main.o
4208         disable ffserver
4209         cp_f='cp'
4210         ;;
4211     none)
4212         ;;
4213     *)
4214         die "Unknown OS '$target_os'."
4215         ;;
4216 esac
4217
4218 # determine libc flavour
4219
4220 probe_libc(){
4221     pfx=$1
4222     pfx_no_=${pfx%_}
4223     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4224     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4225         eval ${pfx}libc_type=uclibc
4226         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4227     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4228         eval ${pfx}libc_type=glibc
4229         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4230     # MinGW headers can be installed on Cygwin, so check for newlib first.
4231     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4232         eval ${pfx}libc_type=newlib
4233         add_${pfx}cppflags -U__STRICT_ANSI__
4234     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4235     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4236         eval ${pfx}libc_type=mingw64
4237         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4238             add_compat msvcrt/snprintf.o
4239             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4240         fi
4241         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4242         eval test \$${pfx_no_}cc_type = "gcc" &&
4243             add_${pfx}cppflags -D__printf__=__gnu_printf__
4244     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4245          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4246         eval ${pfx}libc_type=mingw32
4247         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4248             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4249             die "ERROR: MinGW32 runtime version must be >= 3.15."
4250         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4251         eval test \$${pfx_no_}cc_type = "gcc" &&
4252             add_${pfx}cppflags -D__printf__=__gnu_printf__
4253     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4254         eval ${pfx}libc_type=msvcrt
4255         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4256         # 0x601 by default unless something else is set by the user.
4257         # This can easily lead to us detecting functions only present
4258         # in such new versions and producing binaries requiring windows 7.0.
4259         # Therefore explicitly set the default to XP unless the user has
4260         # set something else on the command line.
4261         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4262             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4263     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4264         eval ${pfx}libc_type=klibc
4265     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4266         eval ${pfx}libc_type=bionic
4267     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4268         eval ${pfx}libc_type=solaris
4269         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4270     fi
4271     check_${pfx}cc <<EOF
4272 #include <time.h>
4273 void *v = localtime_r;
4274 EOF
4275 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4276 #include <time.h>
4277 void *v = localtime_r;
4278 EOF
4279
4280 }
4281
4282 probe_libc
4283 test -n "$libc_type" && enable libc_$libc_type
4284 probe_libc host_
4285 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4286
4287 case $libc_type in
4288     bionic)
4289         add_compat strtod.o strtod=avpriv_strtod
4290         ;;
4291     msvcrt)
4292         add_compat strtod.o strtod=avpriv_strtod
4293         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4294                                      _snprintf=avpriv_snprintf  \
4295                                      vsnprintf=avpriv_vsnprintf
4296         ;;
4297 esac
4298
4299 # hacks for compiler/libc/os combinations
4300
4301 if enabled_all tms470 libc_glibc; then
4302     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4303     add_cppflags -D__USER_LABEL_PREFIX__=
4304     add_cppflags -D__builtin_memset=memset
4305     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4306     add_cflags   -pds=48    # incompatible redefinition of macro
4307 fi
4308
4309 if enabled_all ccc libc_glibc; then
4310     add_ldflags -Wl,-z,now  # calls to libots crash without this
4311 fi
4312
4313 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4314     add_cppflags '-I\$(SRC_PATH)/compat/float'
4315
4316 esc(){
4317     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4318 }
4319
4320 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4321
4322 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4323
4324 set_default $PATHS_LIST
4325 set_default nm
4326
4327 # we need to build at least one lib type
4328 if ! enabled_any static shared; then
4329     cat <<EOF
4330 At least one library type must be built.
4331 Specify --enable-static to build the static libraries or --enable-shared to
4332 build the shared libraries as well. To only build the shared libraries specify
4333 --disable-static in addition to --enable-shared.
4334 EOF
4335     exit 1;
4336 fi
4337
4338 die_license_disabled() {
4339     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4340 }
4341
4342 die_license_disabled_gpl() {
4343     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4344 }
4345
4346 die_license_disabled gpl frei0r
4347 die_license_disabled gpl libcdio
4348 die_license_disabled gpl libsmbclient
4349 die_license_disabled gpl libutvideo
4350 die_license_disabled gpl libvidstab
4351 die_license_disabled gpl libx264
4352 die_license_disabled gpl libx265
4353 die_license_disabled gpl libxavs
4354 die_license_disabled gpl libxvid
4355 die_license_disabled gpl libzvbi
4356 die_license_disabled gpl x11grab
4357
4358 die_license_disabled nonfree libaacplus
4359 die_license_disabled nonfree libfaac
4360 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4361 enabled gpl && die_license_disabled_gpl nonfree openssl
4362
4363 die_license_disabled version3 libopencore_amrnb
4364 die_license_disabled version3 libopencore_amrwb
4365 die_license_disabled version3 libsmbclient
4366 die_license_disabled version3 libvo_aacenc
4367 die_license_disabled version3 libvo_amrwbenc
4368
4369 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4370
4371 disabled optimizations || check_cflags -fomit-frame-pointer
4372
4373 enable_weak_pic() {
4374     disabled pic && return
4375     enable pic
4376     add_cppflags -DPIC
4377     case "$target_os" in
4378     mingw*|cygwin*)
4379         ;;
4380     *)
4381         add_cflags -fPIC
4382         ;;
4383     esac
4384     add_asflags  -fPIC
4385 }
4386
4387 enabled pic && enable_weak_pic
4388
4389 check_cc <<EOF || die "Symbol mangling check failed."
4390 int ff_extern;
4391 EOF
4392 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4393 extern_prefix=${sym%%ff_extern*}
4394
4395 check_cc <<EOF && enable_weak inline_asm
4396 void foo(void) { __asm__ volatile ("" ::); }
4397 EOF
4398
4399 _restrict=
4400 for restrict_keyword in restrict __restrict__ __restrict; do
4401     check_cc <<EOF && _restrict=$restrict_keyword && break
4402 void foo(char * $restrict_keyword p);
4403 EOF
4404 done
4405
4406 check_cc <<EOF && enable pragma_deprecated
4407 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4408 EOF
4409
4410 check_cc <<EOF && enable attribute_packed
4411 struct { int x; } __attribute__((packed)) x;
4412 EOF
4413
4414 check_cc <<EOF && enable attribute_may_alias
4415 union { int x; } __attribute__((may_alias)) x;
4416 EOF
4417
4418 check_cc <<EOF || die "endian test failed"
4419 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4420 EOF
4421 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4422