Improve configure help text.
[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     texi2html
1833     threads
1834     vdpau_x11
1835     xlib
1836 "
1837
1838 # options emitted with CONFIG_ prefix but not available on the command line
1839 CONFIG_EXTRA="
1840     aandcttables
1841     ac3dsp
1842     audio_frame_queue
1843     audiodsp
1844     blockdsp
1845     bswapdsp
1846     cabac
1847     dvprofile
1848     exif
1849     faandct
1850     faanidct
1851     fdctdsp
1852     frame_thread_encoder
1853     gcrypt
1854     golomb
1855     gplv3
1856     h263dsp
1857     h264chroma
1858     h264dsp
1859     h264pred
1860     h264qpel
1861     hpeldsp
1862     huffman
1863     huffyuvdsp
1864     huffyuvencdsp
1865     idctdsp
1866     iirfilter
1867     intrax8
1868     lgplv3
1869     llauddsp
1870     llviddsp
1871     lpc
1872     me_cmp
1873     mpeg_er
1874     mpegaudio
1875     mpegaudiodsp
1876     mpegvideo
1877     mpegvideoenc
1878     nettle
1879     pixblockdsp
1880     qpeldsp
1881     rangecoder
1882     riffdec
1883     riffenc
1884     rtpdec
1885     rtpenc_chain
1886     sinewin
1887     startcode
1888     tpeldsp
1889     videodsp
1890     vp3dsp
1891     wma_freqs
1892 "
1893
1894 CMDLINE_SELECT="
1895     $ARCH_EXT_LIST
1896     $CONFIG_LIST
1897     $HAVE_LIST_CMDLINE
1898     $THREADS_LIST
1899     asm
1900     cross_compile
1901     debug
1902     extra_warnings
1903     logging
1904     lto
1905     optimizations
1906     rpath
1907     stripping
1908 "
1909
1910 PATHS_LIST="
1911     bindir
1912     datadir
1913     docdir
1914     incdir
1915     libdir
1916     mandir
1917     prefix
1918     shlibdir
1919 "
1920
1921 CMDLINE_SET="
1922     $PATHS_LIST
1923     ar
1924     arch
1925     as
1926     assert_level
1927     build_suffix
1928     cc
1929     cpu
1930     cross_prefix
1931     cxx
1932     dep_cc
1933     doxygen
1934     extra_version
1935     gas
1936     host_cc
1937     host_cflags
1938     host_ld
1939     host_ldflags
1940     host_libs
1941     host_os
1942     install
1943     ld
1944     logfile
1945     malloc_prefix
1946     nm
1947     optflags
1948     pkg_config
1949     pkg_config_flags
1950     progs_suffix
1951     random_seed
1952     ranlib
1953     samples
1954     strip
1955     sws_max_filter_size
1956     sysinclude
1957     sysroot
1958     target_exec
1959     target_os
1960     target_path
1961     target_samples
1962     tempprefix
1963     toolchain
1964     valgrind
1965     yasmexe
1966 "
1967
1968 CMDLINE_APPEND="
1969     extra_cflags
1970     extra_cxxflags
1971     host_cppflags
1972 "
1973
1974 # code dependency declarations
1975
1976 # architecture extensions
1977
1978 armv5te_deps="arm"
1979 armv6_deps="arm"
1980 armv6t2_deps="arm"
1981 armv8_deps="aarch64"
1982 neon_deps_any="aarch64 arm"
1983 intrinsics_neon_deps="neon"
1984 vfp_deps_any="aarch64 arm"
1985 vfpv3_deps="vfp"
1986 setend_deps="arm"
1987
1988 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1989
1990 mipsfpu_deps="mips"
1991 mips32r2_deps="mips"
1992 mipsdspr1_deps="mips"
1993 mipsdspr2_deps="mips"
1994
1995 altivec_deps="ppc"
1996 ppc4xx_deps="ppc"
1997 vsx_deps="ppc"
1998
1999 cpunop_deps="i686"
2000 x86_64_select="i686"
2001 x86_64_suggest="fast_cmov"
2002
2003 amd3dnow_deps="mmx"
2004 amd3dnowext_deps="amd3dnow"
2005 i686_deps="x86"
2006 mmx_deps="x86"
2007 mmxext_deps="mmx"
2008 sse_deps="mmxext"
2009 sse2_deps="sse"
2010 sse3_deps="sse2"
2011 ssse3_deps="sse3"
2012 sse4_deps="ssse3"
2013 sse42_deps="sse4"
2014 avx_deps="sse42"
2015 xop_deps="avx"
2016 fma3_deps="avx"
2017 fma4_deps="avx"
2018 avx2_deps="avx"
2019
2020 mmx_external_deps="yasm"
2021 mmx_inline_deps="inline_asm"
2022 mmx_suggest="mmx_external mmx_inline"
2023
2024 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2025     eval dep=\$${ext}_deps
2026     eval ${ext}_external_deps='"${dep}_external"'
2027     eval ${ext}_inline_deps='"${dep}_inline"'
2028     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2029 done
2030
2031 aligned_stack_if_any="aarch64 ppc x86"
2032 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2033 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2034 fast_unaligned_if_any="aarch64 ppc x86"
2035 simd_align_16_if_any="altivec neon sse"
2036
2037 # system capabilities
2038
2039 symver_if_any="symver_asm_label symver_gnu_asm"
2040
2041 # threading support
2042 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2043 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2044 atomics_win32_if="MemoryBarrier"
2045 atomics_native_if_any="$ATOMICS_LIST"
2046 w32threads_deps="atomics_native"
2047 threads_if_any="$THREADS_LIST"
2048
2049 # subsystems
2050 dct_select="rdft"
2051 error_resilience_select="me_cmp"
2052 faandct_deps="faan fdctdsp"
2053 faanidct_deps="faan idctdsp"
2054 frame_thread_encoder_deps="encoders threads"
2055 intrax8_select="error_resilience"
2056 mdct_select="fft"
2057 rdft_select="fft"
2058 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2059 mpeg_er_select="error_resilience"
2060 mpegaudio_select="mpegaudiodsp"
2061 mpegaudiodsp_select="dct"
2062 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2063 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2064
2065 # decoders / encoders
2066 aac_decoder_select="mdct sinewin"
2067 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2068 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2069 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2070 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2071 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2072 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2073 aic_decoder_select="golomb idctdsp"
2074 alac_encoder_select="lpc"
2075 als_decoder_select="bswapdsp"
2076 amrnb_decoder_select="lsp"
2077 amrwb_decoder_select="lsp"
2078 amv_decoder_select="sp5x_decoder exif"
2079 amv_encoder_select="aandcttables mpegvideoenc"
2080 ape_decoder_select="bswapdsp llauddsp"
2081 apng_decoder_select="zlib"
2082 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2083 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2084 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2085 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2086 atrac1_decoder_select="mdct sinewin"
2087 atrac3_decoder_select="mdct"
2088 atrac3p_decoder_select="mdct sinewin"
2089 avrn_decoder_select="exif"
2090 bink_decoder_select="blockdsp hpeldsp"
2091 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2092 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2093 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2094 cllc_decoder_select="bswapdsp"
2095 comfortnoise_encoder_select="lpc"
2096 cook_decoder_select="audiodsp mdct sinewin"
2097 cscd_decoder_select="lzo"
2098 cscd_decoder_suggest="zlib"
2099 dca_decoder_select="mdct"
2100 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2101 dnxhd_decoder_select="blockdsp idctdsp"
2102 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2103 dvvideo_decoder_select="dvprofile idctdsp"
2104 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2105 dxa_decoder_select="zlib"
2106 eac3_decoder_select="ac3_decoder"
2107 eac3_encoder_select="ac3_encoder"
2108 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2109 eatgq_decoder_select="aandcttables"
2110 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2111 exr_decoder_select="zlib"
2112 ffv1_decoder_select="golomb rangecoder"
2113 ffv1_encoder_select="rangecoder"
2114 ffvhuff_decoder_select="huffyuv_decoder"
2115 ffvhuff_encoder_select="huffyuv_encoder"
2116 fic_decoder_select="golomb"
2117 flac_decoder_select="golomb"
2118 flac_encoder_select="bswapdsp golomb lpc"
2119 flashsv_decoder_select="zlib"
2120 flashsv_encoder_select="zlib"
2121 flashsv2_encoder_select="zlib"
2122 flashsv2_decoder_select="zlib"
2123 flv_decoder_select="h263_decoder"
2124 flv_encoder_select="h263_encoder"
2125 fourxm_decoder_select="blockdsp bswapdsp"
2126 fraps_decoder_select="bswapdsp huffman"
2127 g2m_decoder_select="blockdsp idctdsp zlib"
2128 g729_decoder_select="audiodsp"
2129 h261_decoder_select="mpeg_er mpegvideo"
2130 h261_encoder_select="aandcttables mpegvideoenc"
2131 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2132 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2133 h263i_decoder_select="h263_decoder"
2134 h263p_encoder_select="h263_encoder"
2135 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2136 h264_decoder_suggest="error_resilience"
2137 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2138 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2139 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2140 iac_decoder_select="imc_decoder"
2141 imc_decoder_select="bswapdsp fft mdct sinewin"
2142 indeo3_decoder_select="hpeldsp"
2143 interplay_video_decoder_select="hpeldsp"
2144 jpegls_decoder_select="golomb mjpeg_decoder"
2145 jpegls_encoder_select="golomb"
2146 jv_decoder_select="blockdsp"
2147 lagarith_decoder_select="huffyuvdsp"
2148 ljpeg_encoder_select="aandcttables idctdsp"
2149 loco_decoder_select="golomb"
2150 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2151 metasound_decoder_select="lsp mdct sinewin"
2152 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2153 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2154 mjpeg_encoder_select="aandcttables mpegvideoenc"
2155 mjpegb_decoder_select="mjpeg_decoder"
2156 mlp_decoder_select="mlp_parser"
2157 motionpixels_decoder_select="bswapdsp"
2158 mp1_decoder_select="mpegaudio"
2159 mp1float_decoder_select="mpegaudio"
2160 mp2_decoder_select="mpegaudio"
2161 mp2float_decoder_select="mpegaudio"
2162 mp3_decoder_select="mpegaudio"
2163 mp3adu_decoder_select="mpegaudio"
2164 mp3adufloat_decoder_select="mpegaudio"
2165 mp3float_decoder_select="mpegaudio"
2166 mp3on4_decoder_select="mpegaudio"
2167 mp3on4float_decoder_select="mpegaudio"
2168 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2169 mpc8_decoder_select="mpegaudiodsp"
2170 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2171 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2172 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2173 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2174 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2175 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2176 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2177 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2178 mpeg4_encoder_select="h263_encoder"
2179 msmpeg4v1_decoder_select="h263_decoder"
2180 msmpeg4v2_decoder_select="h263_decoder"
2181 msmpeg4v2_encoder_select="h263_encoder"
2182 msmpeg4v3_decoder_select="h263_decoder"
2183 msmpeg4v3_encoder_select="h263_encoder"
2184 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2185 mxpeg_decoder_select="mjpeg_decoder"
2186 nellymoser_decoder_select="mdct sinewin"
2187 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2188 nuv_decoder_select="idctdsp lzo"
2189 on2avc_decoder_select="mdct"
2190 opus_decoder_deps="swresample"
2191 png_decoder_select="zlib"
2192 png_encoder_select="huffyuvencdsp zlib"
2193 prores_decoder_select="blockdsp idctdsp"
2194 prores_encoder_select="fdctdsp"
2195 qcelp_decoder_select="lsp"
2196 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2197 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2198 ra_144_decoder_select="audiodsp"
2199 ralf_decoder_select="golomb"
2200 rawvideo_decoder_select="bswapdsp"
2201 rtjpeg_decoder_select="me_cmp"
2202 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2203 rv10_encoder_select="h263_encoder"
2204 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2205 rv20_encoder_select="h263_encoder"
2206 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2207 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2208 shorten_decoder_select="golomb"
2209 sipr_decoder_select="lsp"
2210 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2211 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2212 sonic_decoder_select="golomb rangecoder"
2213 sonic_encoder_select="golomb rangecoder"
2214 sonic_ls_encoder_select="golomb rangecoder"
2215 sp5x_decoder_select="mjpeg_decoder"
2216 svq1_decoder_select="hpeldsp"
2217 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2218 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2219 svq3_decoder_suggest="zlib"
2220 tak_decoder_select="audiodsp"
2221 theora_decoder_select="vp3_decoder"
2222 thp_decoder_select="mjpeg_decoder"
2223 tiff_decoder_suggest="zlib lzma"
2224 tiff_encoder_suggest="zlib"
2225 truehd_decoder_select="mlp_parser"
2226 truemotion2_decoder_select="bswapdsp"
2227 truespeech_decoder_select="bswapdsp"
2228 tscc_decoder_select="zlib"
2229 twinvq_decoder_select="mdct lsp sinewin"
2230 utvideo_decoder_select="bswapdsp"
2231 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2232 vble_decoder_select="huffyuvdsp"
2233 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2234 vc1image_decoder_select="vc1_decoder"
2235 vorbis_decoder_select="mdct"
2236 vorbis_encoder_select="mdct"
2237 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2238 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2239 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2240 vp6a_decoder_select="vp6_decoder"
2241 vp6f_decoder_select="vp6_decoder"
2242 vp7_decoder_select="h264pred videodsp"
2243 vp8_decoder_select="h264pred videodsp"
2244 vp9_decoder_select="videodsp vp9_parser"
2245 webp_decoder_select="vp8_decoder"
2246 wmalossless_decoder_select="llauddsp"
2247 wmapro_decoder_select="mdct sinewin wma_freqs"
2248 wmav1_decoder_select="mdct sinewin wma_freqs"
2249 wmav1_encoder_select="mdct sinewin wma_freqs"
2250 wmav2_decoder_select="mdct sinewin wma_freqs"
2251 wmav2_encoder_select="mdct sinewin wma_freqs"
2252 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2253 wmv1_decoder_select="h263_decoder"
2254 wmv1_encoder_select="h263_encoder"
2255 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2256 wmv2_encoder_select="h263_encoder"
2257 wmv3_decoder_select="vc1_decoder"
2258 wmv3image_decoder_select="wmv3_decoder"
2259 zerocodec_decoder_select="zlib"
2260 zlib_decoder_select="zlib"
2261 zlib_encoder_select="zlib"
2262 zmbv_decoder_select="zlib"
2263 zmbv_encoder_select="zlib"
2264
2265 # hardware accelerators
2266 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2267 dxva2_deps="dxva2api_h"
2268 vaapi_deps="va_va_h"
2269 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2270 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2271 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2272 xvmc_deps="X11_extensions_XvMClib_h"
2273
2274 h263_vaapi_hwaccel_deps="vaapi"
2275 h263_vaapi_hwaccel_select="h263_decoder"
2276 h263_vdpau_hwaccel_deps="vdpau"
2277 h263_vdpau_hwaccel_select="h263_decoder"
2278 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2279 h264_dxva2_hwaccel_deps="dxva2"
2280 h264_dxva2_hwaccel_select="h264_decoder"
2281 h264_vaapi_hwaccel_deps="vaapi"
2282 h264_vaapi_hwaccel_select="h264_decoder"
2283 h264_vda_decoder_deps="vda"
2284 h264_vda_decoder_select="h264_decoder"
2285 h264_vda_hwaccel_deps="vda"
2286 h264_vda_hwaccel_select="h264_decoder"
2287 h264_vda_old_hwaccel_deps="vda"
2288 h264_vda_old_hwaccel_select="h264_decoder"
2289 h264_vdpau_decoder_deps="vdpau"
2290 h264_vdpau_decoder_select="h264_decoder"
2291 h264_vdpau_hwaccel_deps="vdpau"
2292 h264_vdpau_hwaccel_select="h264_decoder"
2293 mpeg_vdpau_decoder_deps="vdpau"
2294 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2295 mpeg_xvmc_hwaccel_deps="xvmc"
2296 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2297 mpeg1_vdpau_decoder_deps="vdpau"
2298 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2299 mpeg1_vdpau_hwaccel_deps="vdpau"
2300 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2301 mpeg1_xvmc_hwaccel_deps="xvmc"
2302 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2303 mpeg2_crystalhd_decoder_select="crystalhd"
2304 mpeg2_dxva2_hwaccel_deps="dxva2"
2305 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2306 mpeg2_vaapi_hwaccel_deps="vaapi"
2307 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2308 mpeg2_vdpau_hwaccel_deps="vdpau"
2309 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2310 mpeg2_xvmc_hwaccel_deps="xvmc"
2311 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2312 mpeg4_crystalhd_decoder_select="crystalhd"
2313 mpeg4_vaapi_hwaccel_deps="vaapi"
2314 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2315 mpeg4_vdpau_decoder_deps="vdpau"
2316 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2317 mpeg4_vdpau_hwaccel_deps="vdpau"
2318 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2319 msmpeg4_crystalhd_decoder_select="crystalhd"
2320 vc1_crystalhd_decoder_select="crystalhd"
2321 vc1_dxva2_hwaccel_deps="dxva2"
2322 vc1_dxva2_hwaccel_select="vc1_decoder"
2323 vc1_vaapi_hwaccel_deps="vaapi"
2324 vc1_vaapi_hwaccel_select="vc1_decoder"
2325 vc1_vdpau_decoder_deps="vdpau"
2326 vc1_vdpau_decoder_select="vc1_decoder"
2327 vc1_vdpau_hwaccel_deps="vdpau"
2328 vc1_vdpau_hwaccel_select="vc1_decoder"
2329 wmv3_crystalhd_decoder_select="crystalhd"
2330 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2331 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2332 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2333 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2334
2335 # parsers
2336 h264_parser_select="h264_decoder"
2337 hevc_parser_select="hevc_decoder"
2338 mpegvideo_parser_select="mpegvideo"
2339 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2340 vc1_parser_select="mpegvideo startcode vc1_decoder"
2341
2342 # external libraries
2343 libaacplus_encoder_deps="libaacplus"
2344 libcelt_decoder_deps="libcelt"
2345 libfaac_encoder_deps="libfaac"
2346 libfaac_encoder_select="audio_frame_queue"
2347 libfdk_aac_decoder_deps="libfdk_aac"
2348 libfdk_aac_encoder_deps="libfdk_aac"
2349 libfdk_aac_encoder_select="audio_frame_queue"
2350 libgme_demuxer_deps="libgme"
2351 libgsm_decoder_deps="libgsm"
2352 libgsm_encoder_deps="libgsm"
2353 libgsm_ms_decoder_deps="libgsm"
2354 libgsm_ms_encoder_deps="libgsm"
2355 libilbc_decoder_deps="libilbc"
2356 libilbc_encoder_deps="libilbc"
2357 libmodplug_demuxer_deps="libmodplug"
2358 libmp3lame_encoder_deps="libmp3lame"
2359 libmp3lame_encoder_select="audio_frame_queue"
2360 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2361 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2362 libopencore_amrnb_encoder_select="audio_frame_queue"
2363 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2364 libopenjpeg_decoder_deps="libopenjpeg"
2365 libopenjpeg_encoder_deps="libopenjpeg"
2366 libopus_decoder_deps="libopus"
2367 libopus_encoder_deps="libopus"
2368 libopus_encoder_select="audio_frame_queue"
2369 libquvi_demuxer_deps="libquvi"
2370 libschroedinger_decoder_deps="libschroedinger"
2371 libschroedinger_encoder_deps="libschroedinger"
2372 libshine_encoder_deps="libshine"
2373 libshine_encoder_select="audio_frame_queue"
2374 libspeex_decoder_deps="libspeex"
2375 libspeex_encoder_deps="libspeex"
2376 libspeex_encoder_select="audio_frame_queue"
2377 libstagefright_h264_decoder_deps="libstagefright_h264"
2378 libtheora_encoder_deps="libtheora"
2379 libtwolame_encoder_deps="libtwolame"
2380 libvo_aacenc_encoder_deps="libvo_aacenc"
2381 libvo_aacenc_encoder_select="audio_frame_queue"
2382 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2383 libvorbis_decoder_deps="libvorbis"
2384 libvorbis_encoder_deps="libvorbis"
2385 libvorbis_encoder_select="audio_frame_queue"
2386 libvpx_vp8_decoder_deps="libvpx"
2387 libvpx_vp8_encoder_deps="libvpx"
2388 libvpx_vp9_decoder_deps="libvpx"
2389 libvpx_vp9_encoder_deps="libvpx"
2390 libwavpack_encoder_deps="libwavpack"
2391 libwebp_encoder_deps="libwebp"
2392 libx264_encoder_deps="libx264"
2393 libx264rgb_encoder_deps="libx264"
2394 libx265_encoder_deps="libx265"
2395 libxavs_encoder_deps="libxavs"
2396 libxvid_encoder_deps="libxvid"
2397 libutvideo_decoder_deps="libutvideo"
2398 libutvideo_encoder_deps="libutvideo"
2399 libzvbi_teletext_decoder_deps="libzvbi"
2400
2401 # demuxers / muxers
2402 ac3_demuxer_select="ac3_parser"
2403 asf_demuxer_select="riffdec"
2404 asf_muxer_select="riffenc"
2405 asf_stream_muxer_select="asf_muxer"
2406 avi_demuxer_select="riffdec exif"
2407 avi_muxer_select="riffenc"
2408 avisynth_demuxer_deps="avisynth"
2409 avisynth_demuxer_select="riffdec"
2410 caf_demuxer_select="riffdec"
2411 dash_muxer_select="mp4_muxer"
2412 dirac_demuxer_select="dirac_parser"
2413 dts_demuxer_select="dca_parser"
2414 dtshd_demuxer_select="dca_parser"
2415 dv_demuxer_select="dvprofile"
2416 dv_muxer_select="dvprofile"
2417 dxa_demuxer_select="riffdec"
2418 eac3_demuxer_select="ac3_parser"
2419 f4v_muxer_select="mov_muxer"
2420 flac_demuxer_select="flac_parser"
2421 hds_muxer_select="flv_muxer"
2422 hls_muxer_select="mpegts_muxer"
2423 image2_alias_pix_demuxer_select="image2_demuxer"
2424 image2_brender_pix_demuxer_select="image2_demuxer"
2425 ipod_muxer_select="mov_muxer"
2426 ismv_muxer_select="mov_muxer"
2427 libnut_demuxer_deps="libnut"
2428 libnut_muxer_deps="libnut"
2429 matroska_audio_muxer_select="matroska_muxer"
2430 matroska_demuxer_select="riffdec"
2431 matroska_demuxer_suggest="bzlib lzo zlib"
2432 matroska_muxer_select="riffenc"
2433 mmf_muxer_select="riffenc"
2434 mov_demuxer_select="riffdec"
2435 mov_demuxer_suggest="zlib"
2436 mov_muxer_select="riffenc rtpenc_chain ac3_parser"
2437 mp3_demuxer_select="mpegaudio_parser"
2438 mp4_muxer_select="mov_muxer"
2439 mpegts_muxer_select="adts_muxer latm_muxer"
2440 mpegtsraw_demuxer_select="mpegts_demuxer"
2441 mxf_d10_muxer_select="mxf_muxer"
2442 nut_muxer_select="riffenc"
2443 nuv_demuxer_select="riffdec"
2444 oga_muxer_select="ogg_muxer"
2445 ogg_demuxer_select="golomb"
2446 opus_muxer_select="ogg_muxer"
2447 psp_muxer_select="mov_muxer"
2448 rtp_demuxer_select="sdp_demuxer"
2449 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2450 rtsp_demuxer_select="http_protocol rtpdec"
2451 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2452 sap_demuxer_select="sdp_demuxer"
2453 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2454 sdp_demuxer_select="rtpdec"
2455 smoothstreaming_muxer_select="ismv_muxer"
2456 spdif_muxer_select="aac_parser"
2457 spx_muxer_select="ogg_muxer"
2458 tak_demuxer_select="tak_parser"
2459 tg2_muxer_select="mov_muxer"
2460 tgp_muxer_select="mov_muxer"
2461 vobsub_demuxer_select="mpegps_demuxer"
2462 w64_demuxer_select="wav_demuxer"
2463 w64_muxer_select="wav_muxer"
2464 wav_demuxer_select="riffdec"
2465 wav_muxer_select="riffenc"
2466 webm_muxer_select="riffenc"
2467 wtv_demuxer_select="riffdec"
2468 wtv_muxer_select="riffenc"
2469 xmv_demuxer_select="riffdec"
2470 xwma_demuxer_select="riffdec"
2471
2472 # indevs / outdevs
2473 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2474 alsa_outdev_deps="alsa_asoundlib_h"
2475 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia -framework CoreGraphics"
2476 avfoundation_indev_select="avfoundation"
2477 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2478 caca_outdev_deps="libcaca"
2479 decklink_outdev_deps="decklink pthreads"
2480 decklink_outdev_extralibs="-lstdc++"
2481 decklink_indev_deps="decklink pthreads"
2482 decklink_indev_extralibs="-lstdc++"
2483 dshow_indev_deps="IBaseFilter"
2484 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2485 dv1394_indev_deps="dv1394"
2486 dv1394_indev_select="dv_demuxer"
2487 fbdev_indev_deps="linux_fb_h"
2488 fbdev_outdev_deps="linux_fb_h"
2489 gdigrab_indev_deps="CreateDIBSection"
2490 gdigrab_indev_extralibs="-lgdi32"
2491 gdigrab_indev_select="bmp_decoder"
2492 iec61883_indev_deps="libiec61883"
2493 jack_indev_deps="jack_jack_h sem_timedwait"
2494 lavfi_indev_deps="avfilter"
2495 libcdio_indev_deps="libcdio"
2496 libdc1394_indev_deps="libdc1394"
2497 libv4l2_indev_deps="libv4l2"
2498 openal_indev_deps="openal"
2499 opengl_outdev_deps="opengl"
2500 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2501 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2502 pulse_indev_deps="libpulse"
2503 pulse_outdev_deps="libpulse"
2504 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2505 qtkit_indev_select="qtkit"
2506 sdl_outdev_deps="sdl"
2507 sndio_indev_deps="sndio_h"
2508 sndio_outdev_deps="sndio_h"
2509 v4l_indev_deps="linux_videodev_h"
2510 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2511 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2512 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2513 vfwcap_indev_extralibs="-lavicap32"
2514 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2515 xv_outdev_extralibs="-lXv -lX11 -lXext"
2516 x11grab_indev_deps="x11grab"
2517 x11grab_xcb_indev_deps="libxcb"
2518
2519 # protocols
2520 bluray_protocol_deps="libbluray"
2521 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2522 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2523 ffrtmpcrypt_protocol_select="tcp_protocol"
2524 ffrtmphttp_protocol_deps="!librtmp_protocol"
2525 ffrtmphttp_protocol_select="http_protocol"
2526 ftp_protocol_select="tcp_protocol"
2527 gopher_protocol_select="network"
2528 http_protocol_select="tcp_protocol"
2529 httpproxy_protocol_select="tcp_protocol"
2530 https_protocol_select="tls_protocol"
2531 icecast_protocol_select="http_protocol"
2532 librtmp_protocol_deps="librtmp"
2533 librtmpe_protocol_deps="librtmp"
2534 librtmps_protocol_deps="librtmp"
2535 librtmpt_protocol_deps="librtmp"
2536 librtmpte_protocol_deps="librtmp"
2537 libsmbclient_protocol_deps="libsmbclient gplv3"
2538 libssh_protocol_deps="libssh"
2539 mmsh_protocol_select="http_protocol"
2540 mmst_protocol_select="network"
2541 rtmp_protocol_deps="!librtmp_protocol"
2542 rtmp_protocol_select="tcp_protocol"
2543 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2544 rtmps_protocol_deps="!librtmp_protocol"
2545 rtmps_protocol_select="tls_protocol"
2546 rtmpt_protocol_select="ffrtmphttp_protocol"
2547 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2548 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2549 rtp_protocol_select="udp_protocol"
2550 sctp_protocol_deps="struct_sctp_event_subscribe"
2551 sctp_protocol_select="network"
2552 srtp_protocol_select="rtp_protocol"
2553 tcp_protocol_select="network"
2554 tls_protocol_deps_any="openssl gnutls"
2555 tls_protocol_select="tcp_protocol"
2556 udp_protocol_select="network"
2557 udplite_protocol_select="network"
2558 unix_protocol_deps="sys_un_h"
2559 unix_protocol_select="network"
2560
2561 # filters
2562 amovie_filter_deps="avcodec avformat"
2563 aresample_filter_deps="swresample"
2564 ass_filter_deps="libass"
2565 asyncts_filter_deps="avresample"
2566 atempo_filter_deps="avcodec"
2567 atempo_filter_select="rdft"
2568 azmq_filter_deps="libzmq"
2569 blackframe_filter_deps="gpl"
2570 boxblur_filter_deps="gpl"
2571 bs2b_filter_deps="libbs2b"
2572 colormatrix_filter_deps="gpl"
2573 cropdetect_filter_deps="gpl"
2574 delogo_filter_deps="gpl"
2575 deshake_filter_select="pixelutils"
2576 drawtext_filter_deps="libfreetype"
2577 ebur128_filter_deps="gpl"
2578 flite_filter_deps="libflite"
2579 frei0r_filter_deps="frei0r dlopen"
2580 frei0r_src_filter_deps="frei0r dlopen"
2581 geq_filter_deps="gpl"
2582 histeq_filter_deps="gpl"
2583 hqdn3d_filter_deps="gpl"
2584 interlace_filter_deps="gpl"
2585 kerndeint_filter_deps="gpl"
2586 ladspa_filter_deps="ladspa dlopen"
2587 mcdeint_filter_deps="avcodec gpl"
2588 movie_filter_deps="avcodec avformat"
2589 mp_filter_deps="gpl avcodec swscale"
2590 mpdecimate_filter_deps="gpl"
2591 mpdecimate_filter_select="pixelutils"
2592 mptestsrc_filter_deps="gpl"
2593 negate_filter_deps="lut_filter"
2594 perspective_filter_deps="gpl"
2595 ocv_filter_deps="libopencv"
2596 owdenoise_filter_deps="gpl"
2597 pan_filter_deps="swresample"
2598 phase_filter_deps="gpl"
2599 pp_filter_deps="gpl postproc"
2600 pullup_filter_deps="gpl"
2601 removelogo_filter_deps="avcodec avformat swscale"
2602 resample_filter_deps="avresample"
2603 sab_filter_deps="gpl swscale"
2604 scale_filter_deps="swscale"
2605 select_filter_select="pixelutils"
2606 smartblur_filter_deps="gpl swscale"
2607 showspectrum_filter_deps="avcodec"
2608 showspectrum_filter_select="rdft"
2609 spp_filter_deps="gpl avcodec"
2610 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2611 stereo3d_filter_deps="gpl"
2612 subtitles_filter_deps="avformat avcodec libass"
2613 super2xsai_filter_deps="gpl"
2614 tinterlace_filter_deps="gpl"
2615 vidstabdetect_filter_deps="libvidstab"
2616 vidstabtransform_filter_deps="libvidstab"
2617 pixfmts_super2xsai_test_deps="super2xsai_filter"
2618 tinterlace_merge_test_deps="tinterlace_filter"
2619 tinterlace_pad_test_deps="tinterlace_filter"
2620 zmq_filter_deps="libzmq"
2621 zoompan_filter_deps="swscale"
2622
2623 # examples
2624 avio_reading="avformat avcodec avutil"
2625 avcodec_example_deps="avcodec avutil"
2626 decoding_encoding_example_deps="avcodec avformat avutil"
2627 demuxing_decoding_example_deps="avcodec avformat avutil"
2628 extract_mvs_example_deps="avcodec avformat avutil"
2629 filter_audio_example_deps="avfilter avutil"
2630 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2631 filtering_video_example_deps="avfilter avcodec avformat avutil"
2632 metadata_example_deps="avformat avutil"
2633 muxing_example_deps="avcodec avformat avutil swscale"
2634 remuxing_example_deps="avcodec avformat avutil"
2635 resampling_audio_example_deps="avutil swresample"
2636 scaling_video_example_deps="avutil swscale"
2637 transcode_aac_example_deps="avcodec avformat swresample"
2638 transcoding_example_deps="avfilter avcodec avformat avutil"
2639
2640 # libraries, in linking order
2641 avcodec_deps="avutil"
2642 avdevice_deps="avformat avcodec avutil"
2643 avfilter_deps="avutil"
2644 avformat_deps="avcodec avutil"
2645 avresample_deps="avutil"
2646 postproc_deps="avutil gpl"
2647 swresample_deps="avutil"
2648 swscale_deps="avutil"
2649
2650 # programs
2651 ffmpeg_deps="avcodec avfilter avformat swresample"
2652 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2653                null_filter
2654                setpts_filter trim_filter"
2655 ffplay_deps="avcodec avformat swscale swresample sdl"
2656 ffplay_libs='$sdl_libs'
2657 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2658 ffprobe_deps="avcodec avformat"
2659 ffserver_deps="avformat fork sarestart"
2660 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2661
2662 # documentation
2663 podpages_deps="perl"
2664 manpages_deps="perl pod2man"
2665 htmlpages_deps="perl"
2666 htmlpages_deps_any="makeinfo_html texi2html"
2667 txtpages_deps="perl makeinfo"
2668 doc_deps_any="manpages htmlpages podpages txtpages"
2669
2670 # default parameters
2671
2672 logfile="config.log"
2673
2674 # installation paths
2675 prefix_default="/usr/local"
2676 bindir_default='${prefix}/bin'
2677 datadir_default='${prefix}/share/ffmpeg'
2678 docdir_default='${prefix}/share/doc/ffmpeg'
2679 incdir_default='${prefix}/include'
2680 libdir_default='${prefix}/lib'
2681 mandir_default='${prefix}/share/man'
2682 shlibdir_default="$libdir_default"
2683
2684 # toolchain
2685 ar_default="ar"
2686 cc_default="gcc"
2687 cxx_default="g++"
2688 host_cc_default="gcc"
2689 cp_f="cp -f"
2690 doxygen_default="doxygen"
2691 install="install"
2692 ln_s="ln -s -f"
2693 nm_default="nm -g"
2694 objformat="elf"
2695 pkg_config_default=pkg-config
2696 ranlib_default="ranlib"
2697 strip_default="strip"
2698 yasmexe_default="yasm"
2699 windres_default="windres"
2700
2701 # OS
2702 target_os_default=$(tolower $(uname -s))
2703 host_os=$target_os_default
2704
2705 # machine
2706 if test "$target_os_default" = aix; then
2707     arch_default=$(uname -p)
2708     strip_default="strip -X32_64"
2709 else
2710     arch_default=$(uname -m)
2711 fi
2712 cpu="generic"
2713 intrinsics="none"
2714
2715 # configurable options
2716 enable $PROGRAM_LIST
2717 enable $DOCUMENT_LIST
2718 enable $EXAMPLE_LIST
2719 enable $(filter_out avresample $LIBRARY_LIST)
2720 enable stripping
2721
2722 enable asm
2723 enable debug
2724 enable doc
2725 enable faan faandct faanidct
2726 enable optimizations
2727 enable runtime_cpudetect
2728 enable safe_bitstream_reader
2729 enable static
2730 enable swscale_alpha
2731
2732 sws_max_filter_size_default=256
2733 set_default sws_max_filter_size
2734
2735 # Enable hwaccels by default.
2736 enable dxva2 vaapi vda vdpau xvmc
2737 enable xlib
2738
2739 # build settings
2740 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2741 LIBPREF="lib"
2742 LIBSUF=".a"
2743 FULLNAME='$(NAME)$(BUILDSUF)'
2744 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2745 SLIBPREF="lib"
2746 SLIBSUF=".so"
2747 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2748 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2749 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2750 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2751 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2752 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2753
2754 asflags_filter=echo
2755 cflags_filter=echo
2756 ldflags_filter=echo
2757
2758 AS_C='-c'
2759 AS_O='-o $@'
2760 CC_C='-c'
2761 CC_E='-E -o $@'
2762 CC_O='-o $@'
2763 CXX_C='-c'
2764 CXX_O='-o $@'
2765 LD_O='-o $@'
2766 LD_LIB='-l%'
2767 LD_PATH='-L'
2768 HOSTCC_C='-c'
2769 HOSTCC_E='-E -o $@'
2770 HOSTCC_O='-o $@'
2771 HOSTLD_O='-o $@'
2772
2773 host_libs='-lm'
2774 host_cflags_filter=echo
2775 host_ldflags_filter=echo
2776
2777 target_path='$(CURDIR)'
2778
2779 # since the object filename is not given with the -MM flag, the compiler
2780 # is only able to print the basename, and we must add the path ourselves
2781 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2782 DEPFLAGS='-MM'
2783
2784 # find source path
2785 if test -f configure; then
2786     source_path=.
2787 else
2788     source_path=$(cd $(dirname "$0"); pwd)
2789     echo "$source_path" | grep -q '[[:blank:]]' &&
2790         die "Out of tree builds are impossible with whitespace in source path."
2791     test -e "$source_path/config.h" &&
2792         die "Out of tree builds are impossible with config.h in source dir."
2793 fi
2794
2795 for v in "$@"; do
2796     r=${v#*=}
2797     l=${v%"$r"}
2798     r=$(sh_quote "$r")
2799     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2800 done
2801
2802 find_things(){
2803     thing=$1
2804     pattern=$2
2805     file=$source_path/$3
2806     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2807 }
2808
2809 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2810 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2811 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2812 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2813 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2814 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2815 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2816 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2817 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2818 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2819 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2820
2821 ALL_COMPONENTS="
2822     $BSF_LIST
2823     $DECODER_LIST
2824     $DEMUXER_LIST
2825     $ENCODER_LIST
2826     $FILTER_LIST
2827     $HWACCEL_LIST
2828     $INDEV_LIST
2829     $MUXER_LIST
2830     $OUTDEV_LIST
2831     $PARSER_LIST
2832     $PROTOCOL_LIST
2833 "
2834
2835 for n in $COMPONENT_LIST; do
2836     v=$(toupper ${n%s})_LIST
2837     eval enable \$$v
2838     eval ${n}_if_any="\$$v"
2839 done
2840
2841 enable $ARCH_EXT_LIST
2842
2843 die_unknown(){
2844     echo "Unknown option \"$1\"."
2845     echo "See $0 --help for available options."
2846     exit 1
2847 }
2848
2849 print_3_columns() {
2850     cat | tr ' ' '\n' | sort | pr -r -3 -t
2851 }
2852
2853 show_list() {
2854     suffix=_$1
2855     shift
2856     echo $* | sed s/$suffix//g | print_3_columns
2857     exit 0
2858 }
2859
2860 rand_list(){
2861     IFS=', '
2862     set -- $*
2863     unset IFS
2864     for thing; do
2865         comp=${thing%:*}
2866         prob=${thing#$comp}
2867         prob=${prob#:}
2868         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2869         echo "prob ${prob:-0.5}"
2870         printf '%s\n' $comp
2871     done
2872 }
2873
2874 do_random(){
2875     action=$1
2876     shift
2877     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2878     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2879 }
2880
2881 for opt do
2882     optval="${opt#*=}"
2883     case "$opt" in
2884         --extra-ldflags=*)
2885             add_ldflags $optval
2886         ;;
2887         --extra-ldexeflags=*)
2888             add_ldexeflags $optval
2889         ;;
2890         --extra-libs=*)
2891             add_extralibs $optval
2892         ;;
2893         --disable-devices)
2894             disable $INDEV_LIST $OUTDEV_LIST
2895         ;;
2896         --enable-debug=*)
2897             debuglevel="$optval"
2898         ;;
2899         --disable-programs)
2900             disable $PROGRAM_LIST
2901         ;;
2902         --disable-everything)
2903             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2904         ;;
2905         --disable-all)
2906             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2907             disable $LIBRARY_LIST $PROGRAM_LIST doc
2908         ;;
2909         --enable-random|--disable-random)
2910             action=${opt%%-random}
2911             do_random ${action#--} $COMPONENT_LIST
2912         ;;
2913         --enable-random=*|--disable-random=*)
2914             action=${opt%%-random=*}
2915             do_random ${action#--} $optval
2916         ;;
2917         --enable-*=*|--disable-*=*)
2918             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2919             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2920             eval list=\$$(toupper $thing)_LIST
2921             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2922             list=$(filter "$name" $list)
2923             [ "$list" = "" ] && warn "Option $opt did not match anything"
2924             $action $list
2925         ;;
2926         --enable-?*|--disable-?*)
2927             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2928             if is_in $option $COMPONENT_LIST; then
2929                 test $action = disable && action=unset
2930                 eval $action \$$(toupper ${option%s})_LIST
2931             elif is_in $option $CMDLINE_SELECT; then
2932                 $action $option
2933             else
2934                 die_unknown $opt
2935             fi
2936         ;;
2937         --list-*)
2938             NAME="${opt#--list-}"
2939             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2940             NAME=${NAME%s}
2941             eval show_list $NAME \$$(toupper $NAME)_LIST
2942         ;;
2943         --help|-h) show_help
2944         ;;
2945         --fatal-warnings) enable fatal_warnings
2946         ;;
2947         *)
2948             optname="${opt%%=*}"
2949             optname="${optname#--}"
2950             optname=$(echo "$optname" | sed 's/-/_/g')
2951             if is_in $optname $CMDLINE_SET; then
2952                 eval $optname='$optval'
2953             elif is_in $optname $CMDLINE_APPEND; then
2954                 append $optname "$optval"
2955             else
2956                 die_unknown $opt
2957             fi
2958         ;;
2959     esac
2960 done
2961
2962 disabled logging && logfile=/dev/null
2963
2964 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2965 set >> $logfile
2966
2967 test -n "$cross_prefix" && enable cross_compile
2968
2969 if enabled cross_compile; then
2970     test -n "$arch" && test -n "$target_os" ||
2971         die "Must specify target arch and OS when cross-compiling"
2972 fi
2973
2974 ar_default="${cross_prefix}${ar_default}"
2975 cc_default="${cross_prefix}${cc_default}"
2976 cxx_default="${cross_prefix}${cxx_default}"
2977 nm_default="${cross_prefix}${nm_default}"
2978 pkg_config_default="${cross_prefix}${pkg_config_default}"
2979 ranlib_default="${cross_prefix}${ranlib_default}"
2980 strip_default="${cross_prefix}${strip_default}"
2981 windres_default="${cross_prefix}${windres_default}"
2982
2983 sysinclude_default="${sysroot}/usr/include"
2984
2985 test -n "$valgrind" && toolchain="valgrind-memcheck"
2986
2987 case "$toolchain" in
2988     clang-asan)
2989         cc_default="clang"
2990         add_cflags  -fsanitize=address
2991         add_ldflags -fsanitize=address
2992     ;;
2993     clang-tsan)
2994         cc_default="clang"
2995         add_cflags  -fsanitize=thread -pie
2996         add_ldflags -fsanitize=thread -pie
2997     ;;
2998     clang-usan)
2999         cc_default="clang"
3000         add_cflags  -fsanitize=undefined
3001         add_ldflags -fsanitize=undefined
3002     ;;
3003     gcc-asan)
3004         cc_default="gcc"
3005         add_cflags  -fsanitize=address
3006         add_ldflags -fsanitize=address
3007     ;;
3008     gcc-tsan)
3009         cc_default="gcc"
3010         add_cflags  -fsanitize=thread -pie -fPIC
3011         add_ldflags -fsanitize=thread -pie -fPIC
3012     ;;
3013     gcc-usan)
3014         cc_default="gcc"
3015         add_cflags  -fsanitize=undefined
3016         add_ldflags -fsanitize=undefined
3017     ;;
3018     valgrind-massif)
3019         target_exec_default=${valgrind:-"valgrind"}
3020         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"
3021     ;;
3022     valgrind-memcheck)
3023         target_exec_default=${valgrind:-"valgrind"}
3024         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3025     ;;
3026     msvc)
3027         # Check whether the current MSVC version needs the C99 converter.
3028         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3029         # support enough of C99 to build ffmpeg. Default to the new
3030         # behaviour if the regexp was unable to match anything, since this
3031         # successfully parses the version number of existing supported
3032         # versions that require the converter (MSVC 2010 and 2012).
3033         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3034         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3035             cc_default="cl"
3036         else
3037             cc_default="c99wrap cl"
3038         fi
3039         ld_default="link"
3040         nm_default="dumpbin -symbols"
3041         ar_default="lib"
3042         target_os_default="win32"
3043         # Use a relative path for TMPDIR. This makes sure all the
3044         # ffconf temp files are written with a relative path, avoiding
3045         # issues with msys/win32 path conversion for MSVC parameters
3046         # such as -Fo<file> or -out:<file>.
3047         TMPDIR=.
3048     ;;
3049     icl)
3050         cc_default="icl"
3051         ld_default="xilink"
3052         nm_default="dumpbin -symbols"
3053         ar_default="xilib"
3054         target_os_default="win32"
3055         TMPDIR=.
3056     ;;
3057     gcov)
3058         add_cflags  -fprofile-arcs -ftest-coverage
3059         add_ldflags -fprofile-arcs -ftest-coverage
3060     ;;
3061     hardened)
3062         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3063         add_cflags   -fno-strict-overflow -fstack-protector-all
3064         add_ldflags  -Wl,-z,relro -Wl,-z,now
3065     ;;
3066     ?*)
3067         die "Unknown toolchain $toolchain"
3068     ;;
3069 esac
3070
3071 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3072     target_exec target_os yasmexe
3073 enabled cross_compile || host_cc_default=$cc
3074 set_default host_cc
3075
3076 pkg_config_fail_message=""
3077 if ! $pkg_config --version >/dev/null 2>&1; then
3078     warn "$pkg_config not found, library detection may fail."
3079     pkg_config=false
3080 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3081     pkg_config_fail_message="
3082 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3083 fi
3084
3085 if test $doxygen != $doxygen_default && \
3086   ! $doxygen --version >/dev/null 2>&1; then
3087     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3088 fi
3089
3090 exesuf() {
3091     case $1 in
3092         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3093     esac
3094 }
3095
3096 EXESUF=$(exesuf $target_os)
3097 HOSTEXESUF=$(exesuf $host_os)
3098
3099 # set temporary file name
3100 : ${TMPDIR:=$TEMPDIR}
3101 : ${TMPDIR:=$TMP}
3102 : ${TMPDIR:=/tmp}
3103
3104 if [ -n "$tempprefix" ] ; then
3105     mktemp(){
3106         echo $tempprefix.${HOSTNAME}.${UID}
3107     }
3108 elif ! check_cmd mktemp -u XXXXXX; then
3109     # simple replacement for missing mktemp
3110     # NOT SAFE FOR GENERAL USE
3111     mktemp(){
3112         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3113     }
3114 fi
3115
3116 tmpfile(){
3117     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3118         (set -C; exec > $tmp) 2>/dev/null ||
3119         die "Unable to create temporary file in $TMPDIR."
3120     append TMPFILES $tmp
3121     eval $1=$tmp
3122 }
3123
3124 trap 'rm -f -- $TMPFILES' EXIT
3125
3126 tmpfile TMPASM .asm
3127 tmpfile TMPC   .c
3128 tmpfile TMPCPP .cpp
3129 tmpfile TMPE   $EXESUF
3130 tmpfile TMPH   .h
3131 tmpfile TMPM   .m
3132 tmpfile TMPO   .o
3133 tmpfile TMPS   .S
3134 tmpfile TMPSH  .sh
3135 tmpfile TMPV   .ver
3136
3137 unset -f mktemp
3138
3139 chmod +x $TMPE
3140
3141 # make sure we can execute files in $TMPDIR
3142 cat > $TMPSH 2>> $logfile <<EOF
3143 #! /bin/sh
3144 EOF
3145 chmod +x $TMPSH >> $logfile 2>&1
3146 if ! $TMPSH >> $logfile 2>&1; then
3147     cat <<EOF
3148 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3149 variable to another directory and make sure that it is not mounted noexec.
3150 EOF
3151     die "Sanity test failed."
3152 fi
3153
3154 armasm_flags(){
3155     for flag; do
3156         case $flag in
3157             # Filter out MSVC cl.exe options from cflags that shouldn't
3158             # be passed to gas-preprocessor
3159             -M[TD]*)                                            ;;
3160             *)                  echo $flag                      ;;
3161         esac
3162    done
3163 }
3164
3165 ccc_flags(){
3166     for flag; do
3167         case $flag in
3168             -std=c99)           echo -c99                       ;;
3169             -mcpu=*)            echo -arch ${flag#*=}           ;;
3170             -mieee)             echo -ieee                      ;;
3171             -O*|-fast)          echo $flag                      ;;
3172             -fno-math-errno)    echo -assume nomath_errno       ;;
3173             -g)                 echo -g3                        ;;
3174             -Wall)              echo -msg_enable level2         ;;
3175             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3176             -Wl,*)              echo $flag                      ;;
3177             -f*|-W*)                                            ;;
3178             *)                  echo $flag                      ;;
3179         esac
3180    done
3181 }
3182
3183 cparser_flags(){
3184     for flag; do
3185         case $flag in
3186             -Wno-switch)             echo -Wno-switch-enum ;;
3187             -Wno-format-zero-length) ;;
3188             -Wdisabled-optimization) ;;
3189             -Wno-pointer-sign)       echo -Wno-other ;;
3190             *)                       echo $flag ;;
3191         esac
3192     done
3193 }
3194
3195 msvc_common_flags(){
3196     for flag; do
3197         case $flag in
3198             # In addition to specifying certain flags under the compiler
3199             # specific filters, they must be specified here as well or else the
3200             # generic catch all at the bottom will print the original flag.
3201             -Wall)                ;;
3202             -std=c99)             ;;
3203             # Common flags
3204             -fomit-frame-pointer) ;;
3205             -g)                   echo -Z7 ;;
3206             -fno-math-errno)      ;;
3207             -fno-common)          ;;
3208             -fno-signed-zeros)    ;;
3209             -fPIC)                ;;
3210             -mthumb)              ;;
3211             -march=*)             ;;
3212             -lz)                  echo zlib.lib ;;
3213             -lavifil32)           echo vfw32.lib ;;
3214             -lavicap32)           echo vfw32.lib user32.lib ;;
3215             -l*)                  echo ${flag#-l}.lib ;;
3216             *)                    echo $flag ;;
3217         esac
3218     done
3219 }
3220
3221 msvc_flags(){
3222     msvc_common_flags "$@"
3223     for flag; do
3224         case $flag in
3225             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3226                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3227                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3228                                        -wd4554 \
3229                                        -wd4273 -wd4701 ;;
3230         esac
3231     done
3232 }
3233
3234 icl_flags(){
3235     msvc_common_flags "$@"
3236     for flag; do
3237         case $flag in
3238             # Despite what Intel's documentation says -Wall, which is supported
3239             # on Windows, does enable remarks so disable them here.
3240             -Wall)                echo $flag -Qdiag-disable:remark ;;
3241             -std=c99)             echo -Qstd=c99 ;;
3242             -flto)                echo -ipo ;;
3243         esac
3244     done
3245 }
3246
3247 icc_flags(){
3248     for flag; do
3249         case $flag in
3250             -flto)                echo -ipo ;;
3251             *)                    echo $flag ;;
3252         esac
3253     done
3254 }
3255
3256 pgi_flags(){
3257     for flag; do
3258         case $flag in
3259             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3260             -fomit-frame-pointer) echo -Mnoframe ;;
3261             -g)                   echo -gopt ;;
3262             *)                    echo $flag ;;
3263         esac
3264     done
3265 }
3266
3267 suncc_flags(){
3268     for flag; do
3269         case $flag in
3270             -march=*|-mcpu=*)
3271                 case "${flag#*=}" in
3272                     native)                   echo -xtarget=native       ;;
3273                     v9|niagara)               echo -xarch=sparc          ;;
3274                     ultrasparc)               echo -xarch=sparcvis       ;;
3275                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3276                     i586|pentium)             echo -xchip=pentium        ;;
3277                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3278                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3279                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3280                     pentium4*)          echo -xtarget=pentium4           ;;
3281                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3282                     *-sse3)             echo -xarch=sse3                 ;;
3283                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3284                     bonnell)                   echo -xarch=ssse3         ;;
3285                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3286                     westmere)                  echo -xtarget=westmere    ;;
3287                     silvermont)                echo -xarch=sse4_2        ;;
3288                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3289                     core-avx*|ivybridge|haswell|broadwell)
3290                                                echo -xarch=avx           ;;
3291                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3292                     btver1)                    echo -xarch=amdsse4a      ;;
3293                     btver2|bdver*)             echo -xarch=avx           ;;
3294                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3295                     k8|opteron|athlon64|athlon-fx)
3296                                                echo -xarch=sse2a         ;;
3297                     athlon*)                   echo -xarch=pentium_proa  ;;
3298                 esac
3299                 ;;
3300             -std=c99)             echo -xc99              ;;
3301             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3302             -fPIC)                echo -KPIC -xcode=pic32 ;;
3303             -W*,*)                echo $flag              ;;
3304             -f*-*|-W*|-mimpure-text)                      ;;
3305             -shared)              echo -G                 ;;
3306             *)                    echo $flag              ;;
3307         esac
3308     done
3309 }
3310
3311 tms470_flags(){
3312     for flag; do
3313         case $flag in
3314             -march=*|-mcpu=*)
3315                 case "${flag#*=}" in
3316                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3317                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3318                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3319                     armv6*|arm11*)          echo -mv=6   ;;
3320                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3321                                             echo -mv=5e  ;;
3322                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3323                 esac
3324                 ;;
3325             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3326             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3327             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3328             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3329             -msoft-float)   echo --float_support=vfplib       ;;
3330             -O[0-3]|-mf=*)  echo $flag                        ;;
3331             -g)             echo -g -mn                       ;;
3332             -pds=*)         echo $flag                        ;;
3333             -D*|-I*)        echo $flag                        ;;
3334             --gcc|--abi=*)  echo $flag                        ;;
3335             -me)            echo $flag                        ;;
3336         esac
3337     done
3338 }
3339
3340 probe_cc(){
3341     pfx=$1
3342     _cc=$2
3343
3344     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3345     unset _ld_o _ldflags _ld_lib _ld_path
3346     unset _depflags _DEPCMD _DEPFLAGS
3347     _flags_filter=echo
3348
3349     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3350         true # no-op to avoid reading stdin in following checks
3351     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3352         _type=llvm_gcc
3353         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3354         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3355         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3356         _cflags_speed='-O3'
3357         _cflags_size='-Os'
3358     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3359         _type=gcc
3360         gcc_version=$($_cc --version | head -n1)
3361         gcc_basever=$($_cc -dumpversion)
3362         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3363         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3364         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3365         if ! $_cc -dumpversion | grep -q '^2\.'; then
3366             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3367         fi
3368         _cflags_speed='-O3'
3369         _cflags_size='-Os'
3370     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3371         _type=icc
3372         _ident=$($_cc --version | head -n1)
3373         _depflags='-MMD'
3374         _cflags_speed='-O3'
3375         _cflags_size='-Os'
3376         _cflags_noopt='-O1'
3377         _flags_filter=icc_flags
3378     elif $_cc -v 2>&1 | grep -q xlc; then
3379         _type=xlc
3380         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3381         _cflags_speed='-O5'
3382         _cflags_size='-O5 -qcompact'
3383     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3384         _type=ccc
3385         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3386         _DEPFLAGS='-M'
3387         _cflags_speed='-fast'
3388         _cflags_size='-O1'
3389         _flags_filter=ccc_flags
3390     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3391         test -d "$sysroot" || die "No valid sysroot specified."
3392         _type=armcc
3393         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3394         armcc_conf="$PWD/armcc.conf"
3395         $_cc --arm_linux_configure                 \
3396              --arm_linux_config_file="$armcc_conf" \
3397              --configure_sysroot="$sysroot"        \
3398              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3399              die "Error creating armcc configuration file."
3400         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3401         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3402         as_default="${cross_prefix}gcc"
3403         _depflags='-MMD'
3404         _cflags_speed='-O3'
3405         _cflags_size='-Os'
3406     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3407         _type=tms470
3408         _ident=$($_cc -version | head -n1 | tr -s ' ')
3409         _flags='--gcc --abi=eabi -me'
3410         _cc_e='-ppl -fe=$@'
3411         _cc_o='-fe=$@'
3412         _depflags='-ppa -ppd=$(@:.o=.d)'
3413         _cflags_speed='-O3 -mf=5'
3414         _cflags_size='-O3 -mf=2'
3415         _flags_filter=tms470_flags
3416     elif $_cc -v 2>&1 | grep -q clang; then
3417         _type=clang
3418         _ident=$($_cc --version | head -n1)
3419         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3420         _cflags_speed='-O3'
3421         _cflags_size='-Os'
3422     elif $_cc -V 2>&1 | grep -q Sun; then
3423         _type=suncc
3424         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3425         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3426         _DEPFLAGS='-xM1 -xc99'
3427         _ldflags='-std=c99'
3428         _cflags_speed='-O5'
3429         _cflags_size='-O5 -xspace'
3430         _flags_filter=suncc_flags
3431     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3432         _type=pathscale
3433         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3434         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3435         _cflags_speed='-O2'
3436         _cflags_size='-Os'
3437         _flags_filter='filter_out -Wdisabled-optimization'
3438     elif $_cc -v 2>&1 | grep -q Open64; then
3439         _type=open64
3440         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3441         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3442         _cflags_speed='-O2'
3443         _cflags_size='-Os'
3444         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3445     elif $_cc -V 2>&1 | grep -q Portland; then
3446         _type=pgi
3447         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3448         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3449         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3450         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3451         _cflags_noopt="-O"
3452         _flags_filter=pgi_flags
3453     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3454         _type=armasm
3455         _ident=$($_cc | head -n1)
3456         # 4509: "This form of conditional instruction is deprecated"
3457         _flags="-nologo -ignore 4509"
3458         _flags_filter=armasm_flags
3459     elif $_cc 2>&1 | grep -q Intel; then
3460         _type=icl
3461         _ident=$($cc 2>&1 | head -n1)
3462         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3463         # Not only is O3 broken on 13.x+ but it is slower on all previous
3464         # versions (tested) as well.
3465         _cflags_speed="-O2"
3466         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3467         if $_cc 2>&1 | grep -q Linker; then
3468             _ld_o='-out:$@'
3469         else
3470             _ld_o='-Fe$@'
3471         fi
3472         _cc_o='-Fo$@'
3473         _cc_e='-P'
3474         _flags_filter=icl_flags
3475         _ld_lib='lib%.a'
3476         _ld_path='-libpath:'
3477         # -Qdiag-error to make icl error when seeing certain unknown arguments
3478         _flags='-nologo -Qdiag-error:4044,10157'
3479         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3480         # with MSVC which enables it by default.
3481         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3482         if [ $pfx = hostcc ]; then
3483             append _cflags -Dsnprintf=_snprintf
3484         fi
3485         disable stripping
3486     elif $_cc 2>&1 | grep -q Microsoft; then
3487         _type=msvc
3488         _ident=$($cc 2>&1 | head -n1)
3489         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3490         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3491         _cflags_speed="-O2"
3492         _cflags_size="-O1"
3493         if $_cc 2>&1 | grep -q Linker; then
3494             _ld_o='-out:$@'
3495         else
3496             _ld_o='-Fe$@'
3497         fi
3498         _cc_o='-Fo$@'
3499         _cc_e='-P -Fi$@'
3500         _flags_filter=msvc_flags
3501         _ld_lib='lib%.a'
3502         _ld_path='-libpath:'
3503         _flags='-nologo'
3504         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3505         if [ $pfx = hostcc ]; then
3506             append _cflags -Dsnprintf=_snprintf
3507         fi
3508         disable stripping
3509     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3510         _type=cparser
3511         _ident=$($_cc --version | head -n1)
3512         _depflags='-MMD'
3513         _cflags_speed='-O4'
3514         _cflags_size='-O2'
3515         _flags_filter=cparser_flags
3516     fi
3517
3518     eval ${pfx}_type=\$_type
3519     eval ${pfx}_ident=\$_ident
3520 }
3521
3522 set_ccvars(){
3523     eval ${1}_C=\${_cc_c-\${${1}_C}}
3524     eval ${1}_E=\${_cc_e-\${${1}_E}}
3525     eval ${1}_O=\${_cc_o-\${${1}_O}}
3526
3527     if [ -n "$_depflags" ]; then
3528         eval ${1}_DEPFLAGS=\$_depflags
3529     else
3530         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3531         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3532         eval DEP${1}FLAGS=\$_flags
3533     fi
3534 }
3535
3536 probe_cc cc "$cc"
3537 cflags_filter=$_flags_filter
3538 cflags_speed=$_cflags_speed
3539 cflags_size=$_cflags_size
3540 cflags_noopt=$_cflags_noopt
3541 add_cflags $_flags $_cflags
3542 cc_ldflags=$_ldflags
3543 set_ccvars CC
3544
3545 probe_cc hostcc "$host_cc"
3546 host_cflags_filter=$_flags_filter
3547 add_host_cflags  $_flags $_cflags
3548 set_ccvars HOSTCC
3549
3550 test -n "$cc_type" && enable $cc_type ||
3551     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3552
3553 : ${as_default:=$cc}
3554 : ${dep_cc_default:=$cc}
3555 : ${ld_default:=$cc}
3556 : ${host_ld_default:=$host_cc}
3557 set_default ar as dep_cc ld host_ld windres
3558
3559 probe_cc as "$as"
3560 asflags_filter=$_flags_filter
3561 add_asflags $_flags $_cflags
3562 set_ccvars AS
3563
3564 probe_cc ld "$ld"
3565 ldflags_filter=$_flags_filter
3566 add_ldflags $_flags $_ldflags
3567 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3568 LD_O=${_ld_o-$LD_O}
3569 LD_LIB=${_ld_lib-$LD_LIB}
3570 LD_PATH=${_ld_path-$LD_PATH}
3571
3572 probe_cc hostld "$host_ld"
3573 host_ldflags_filter=$_flags_filter
3574 add_host_ldflags $_flags $_ldflags
3575 HOSTLD_O=${_ld_o-$HOSTLD_O}
3576
3577 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3578     probe_cc depcc "$dep_cc"
3579     CCDEP=${_DEPCMD:-$DEPCMD}
3580     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3581     DEPCCFLAGS=$_flags
3582 fi
3583
3584 if $ar 2>&1 | grep -q Microsoft; then
3585     arflags="-nologo"
3586     ar_o='-out:$@'
3587 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3588     arflags="rq"
3589     ar_o='$@'
3590 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3591     arflags='-Xany -r -c'
3592     ar_o='$@'
3593 else
3594     arflags="rc"
3595     ar_o='$@'
3596 fi
3597
3598 add_cflags $extra_cflags
3599 add_cxxflags $extra_cxxflags
3600 add_asflags $extra_cflags
3601
3602 if test -n "$sysroot"; then
3603     case "$cc_type" in
3604         gcc|llvm_gcc|clang)
3605             add_cppflags --sysroot="$sysroot"
3606             add_ldflags --sysroot="$sysroot"
3607 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3608             add_cppflags -isysroot "$sysroot"
3609             add_ldflags -isysroot "$sysroot"
3610         ;;
3611         tms470)
3612             add_cppflags -I"$sysinclude"
3613             add_ldflags  --sysroot="$sysroot"
3614         ;;
3615     esac
3616 fi
3617
3618 if test "$cpu" = host; then
3619     enabled cross_compile &&
3620         die "--cpu=host makes no sense when cross-compiling."
3621
3622     case "$cc_type" in
3623         gcc|llvm_gcc)
3624             check_native(){
3625                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3626                 sed -n "/cc1.*$1=/{
3627                             s/.*$1=\\([^ ]*\\).*/\\1/
3628                             p
3629                             q
3630                         }" $TMPE
3631             }
3632             cpu=$(check_native -march || check_native -mcpu)
3633         ;;
3634     esac
3635
3636     test "${cpu:-host}" = host &&
3637         die "--cpu=host not supported with compiler $cc"
3638 fi
3639
3640 # Deal with common $arch aliases
3641 case "$arch" in
3642     aarch64|arm64)
3643         arch="aarch64"
3644     ;;
3645     arm*|iPad*|iPhone*)
3646         arch="arm"
3647     ;;
3648     mips*|IP*)
3649         arch="mips"
3650     ;;
3651     parisc*|hppa*)
3652         arch="parisc"
3653     ;;
3654     "Power Macintosh"|ppc*|powerpc*)
3655         arch="ppc"
3656     ;;
3657     s390|s390x)
3658         arch="s390"
3659     ;;
3660     sh4|sh)
3661         arch="sh4"
3662     ;;
3663     sun4u|sparc*)
3664         arch="sparc"
3665     ;;
3666     tilegx|tile-gx)
3667         arch="tilegx"
3668     ;;
3669     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3670         arch="x86"
3671     ;;
3672 esac
3673
3674 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3675 enable $arch
3676
3677 # Add processor-specific flags
3678 if enabled aarch64; then
3679
3680     case $cpu in
3681         armv*)
3682             cpuflags="-march=$cpu"
3683         ;;
3684         *)
3685             cpuflags="-mcpu=$cpu"
3686         ;;
3687     esac
3688
3689 elif enabled alpha; then
3690
3691     cpuflags="-mcpu=$cpu"
3692
3693 elif enabled arm; then
3694
3695     check_arm_arch() {
3696         check_cpp_condition stddef.h \
3697             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3698             $cpuflags
3699     }
3700
3701     probe_arm_arch() {
3702         if   check_arm_arch 4;        then echo armv4;
3703         elif check_arm_arch 4T;       then echo armv4t;
3704         elif check_arm_arch 5;        then echo armv5;
3705         elif check_arm_arch 5E;       then echo armv5e;
3706         elif check_arm_arch 5T;       then echo armv5t;
3707         elif check_arm_arch 5TE;      then echo armv5te;
3708         elif check_arm_arch 5TEJ;     then echo armv5te;
3709         elif check_arm_arch 6;        then echo armv6;
3710         elif check_arm_arch 6J;       then echo armv6j;
3711         elif check_arm_arch 6K;       then echo armv6k;
3712         elif check_arm_arch 6Z;       then echo armv6z;
3713         elif check_arm_arch 6ZK;      then echo armv6zk;
3714         elif check_arm_arch 6T2;      then echo armv6t2;
3715         elif check_arm_arch 7;        then echo armv7;
3716         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3717         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3718         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3719         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3720         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3721         fi
3722     }
3723
3724     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3725
3726     case $cpu in
3727         armv*)
3728             cpuflags="-march=$cpu"
3729             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3730         ;;
3731         *)
3732             cpuflags="-mcpu=$cpu"
3733             case $cpu in
3734                 cortex-a*)                               subarch=armv7a  ;;
3735                 cortex-r*)                               subarch=armv7r  ;;
3736                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3737                 arm11*)                                  subarch=armv6   ;;
3738                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3739                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3740                 *)                             subarch=$(probe_arm_arch) ;;
3741             esac
3742         ;;
3743     esac
3744
3745     case "$subarch" in
3746         armv5t*)    enable fast_clz                ;;
3747         armv[6-8]*)
3748             enable fast_clz
3749             disabled fast_unaligned || enable fast_unaligned
3750             ;;
3751     esac
3752
3753 elif enabled avr32; then
3754
3755     case $cpu in
3756         ap7[02]0[0-2])
3757             subarch="avr32_ap"
3758             cpuflags="-mpart=$cpu"
3759         ;;
3760         ap)
3761             subarch="avr32_ap"
3762             cpuflags="-march=$cpu"
3763         ;;
3764         uc3[ab]*)
3765             subarch="avr32_uc"
3766             cpuflags="-mcpu=$cpu"
3767         ;;
3768         uc)
3769             subarch="avr32_uc"
3770             cpuflags="-march=$cpu"
3771         ;;
3772     esac
3773
3774 elif enabled bfin; then
3775
3776     cpuflags="-mcpu=$cpu"
3777
3778 elif enabled mips; then
3779
3780     cpuflags="-march=$cpu"
3781
3782     case $cpu in
3783         24kc)
3784             disable mipsfpu
3785             disable mipsdspr1
3786             disable mipsdspr2
3787         ;;
3788         24kf*)
3789             disable mipsdspr1
3790             disable mipsdspr2
3791         ;;
3792         24kec|34kc|1004kc)
3793             disable mipsfpu
3794             disable mipsdspr2
3795         ;;
3796         24kef*|34kf*|1004kf*)
3797             disable mipsdspr2
3798         ;;
3799         74kc)
3800             disable mipsfpu
3801         ;;
3802     esac
3803
3804 elif enabled ppc; then
3805
3806     disable ldbrx
3807     disable vsx
3808
3809     case $(tolower $cpu) in
3810         601|ppc601|powerpc601)
3811             cpuflags="-mcpu=601"
3812             disable altivec
3813         ;;
3814         603*|ppc603*|powerpc603*)
3815             cpuflags="-mcpu=603"
3816             disable altivec
3817         ;;
3818         604*|ppc604*|powerpc604*)
3819             cpuflags="-mcpu=604"
3820             disable altivec
3821         ;;
3822         g3|75*|ppc75*|powerpc75*)
3823             cpuflags="-mcpu=750"
3824             disable altivec
3825         ;;
3826         g4|745*|ppc745*|powerpc745*)
3827             cpuflags="-mcpu=7450"
3828         ;;
3829         74*|ppc74*|powerpc74*)
3830             cpuflags="-mcpu=7400"
3831         ;;
3832         g5|970|ppc970|powerpc970)
3833             cpuflags="-mcpu=970"
3834         ;;
3835         power[3-8]*)
3836             cpuflags="-mcpu=$cpu"
3837         ;;
3838         cell)
3839             cpuflags="-mcpu=cell"
3840             enable ldbrx
3841         ;;
3842         e500mc)
3843             cpuflags="-mcpu=e500mc"
3844             disable altivec
3845         ;;
3846         e500v2)
3847             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3848             disable altivec
3849             disable dcbzl
3850         ;;
3851         e500)
3852             cpuflags="-mcpu=8540 -mhard-float"
3853             disable altivec
3854             disable dcbzl
3855         ;;
3856     esac
3857
3858 elif enabled sparc; then
3859
3860     case $cpu in
3861         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3862             cpuflags="-mcpu=$cpu"
3863         ;;
3864         ultrasparc*|niagara[234])
3865             cpuflags="-mcpu=$cpu"
3866         ;;
3867     esac
3868
3869 elif enabled x86; then
3870
3871     case $cpu in
3872         i[345]86|pentium)
3873             cpuflags="-march=$cpu"
3874             disable i686
3875             disable mmx
3876         ;;
3877         # targets that do NOT support nopl and conditional mov (cmov)
3878         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3879             cpuflags="-march=$cpu"
3880             disable i686
3881         ;;
3882         # targets that do support nopl and conditional mov (cmov)
3883         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3884         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3885             cpuflags="-march=$cpu"
3886             enable i686
3887             enable fast_cmov
3888         ;;
3889         # targets that do support conditional mov but on which it's slow
3890         pentium4|pentium4m|prescott|nocona)
3891             cpuflags="-march=$cpu"
3892             enable i686
3893             disable fast_cmov
3894         ;;
3895     esac
3896
3897 fi
3898
3899 if [ "$cpu" != generic ]; then
3900     add_cflags  $cpuflags
3901     add_asflags $cpuflags
3902 fi
3903
3904 # compiler sanity check
3905 check_exec <<EOF
3906 int main(void){ return 0; }
3907 EOF
3908 if test "$?" != 0; then
3909     echo "$cc is unable to create an executable file."
3910     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3911         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3912         echo "Only do this if you know what cross compiling means."
3913     fi
3914     die "C compiler test failed."
3915 fi
3916
3917 add_cppflags -D_ISOC99_SOURCE
3918 add_cxxflags -D__STDC_CONSTANT_MACROS
3919 check_cflags -std=c99
3920 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3921 #include <stdlib.h>
3922 EOF
3923 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3924 #include <stdlib.h>
3925 EOF
3926
3927 add_host_cppflags -D_ISOC99_SOURCE
3928 check_host_cflags -std=c99
3929 check_host_cflags -Wall
3930 check_host_cflags -O3
3931
3932 check_64bit(){
3933     arch32=$1
3934     arch64=$2
3935     expr=$3
3936     check_code cc "" "int test[2*($expr) - 1]" &&
3937         subarch=$arch64 || subarch=$arch32
3938 }
3939
3940 case "$arch" in
3941     aarch64|alpha|ia64)
3942         spic=$shared
3943     ;;
3944     mips)
3945         check_64bit mips mips64 '_MIPS_SIM > 1'
3946         spic=$shared
3947     ;;
3948     parisc)
3949         check_64bit parisc parisc64 'sizeof(void *) > 4'
3950         spic=$shared
3951     ;;
3952     ppc)
3953         check_64bit ppc ppc64 'sizeof(void *) > 4'
3954         spic=$shared
3955     ;;
3956     s390)
3957         check_64bit s390 s390x 'sizeof(void *) > 4'
3958         spic=$shared
3959     ;;
3960     sparc)
3961         check_64bit sparc sparc64 'sizeof(void *) > 4'
3962         spic=$shared
3963     ;;
3964     x86)
3965         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3966         # Treat x32 as x64 for now. Note it also needs spic=$shared
3967         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
3968             subarch=x86_64
3969         if test "$subarch" = "x86_64"; then
3970             spic=$shared
3971         fi
3972     ;;
3973     ppc)
3974         check_cc <<EOF && subarch="ppc64"
3975         int test[(int)sizeof(char*) - 7];
3976 EOF
3977     ;;
3978 esac
3979
3980 enable $subarch
3981 enabled spic && enable_weak pic
3982
3983 # OS specific
3984 case $target_os in
3985     aix)
3986         SHFLAGS=-shared
3987         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3988         enabled shared && add_ldflags -Wl,-brtl
3989         ;;
3990     android)
3991         disable symver
3992         SLIB_INSTALL_NAME='$(SLIBNAME)'
3993         SLIB_INSTALL_LINKS=
3994         # soname not set on purpose
3995         SHFLAGS=-shared
3996         ;;
3997     haiku)
3998         prefix_default="/boot/common"
3999         network_extralibs="-lnetwork"
4000         host_libs=
4001         ;;
4002     sunos)
4003         SHFLAGS='-shared -Wl,-h,$$(@F)'
4004         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4005         network_extralibs="-lsocket -lnsl"
4006         # When using suncc to build, the Solaris linker will mark
4007         # an executable with each instruction set encountered by
4008         # the Solaris assembler.  As our libraries contain their own
4009         # guards for processor-specific code, instead suppress
4010         # generation of the HWCAPS ELF section on Solaris x86 only.
4011         enabled_all suncc x86 &&
4012             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4013             add_ldflags -Wl,-M,mapfile
4014         nm_default='nm -P -g'
4015         ;;
4016     netbsd)
4017         disable symver
4018         oss_indev_extralibs="-lossaudio"
4019         oss_outdev_extralibs="-lossaudio"
4020         enabled gcc || check_ldflags -Wl,-zmuldefs
4021         ;;
4022     openbsd|bitrig)
4023         disable symver
4024         SHFLAGS='-shared'
4025         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4026         SLIB_INSTALL_LINKS=
4027         oss_indev_extralibs="-lossaudio"
4028         oss_outdev_extralibs="-lossaudio"
4029         ;;
4030     dragonfly)
4031         disable symver
4032         ;;
4033     freebsd)
4034         ;;
4035     bsd/os)
4036         add_extralibs -lpoll -lgnugetopt
4037         strip="strip -d"
4038         ;;
4039     darwin)
4040         enabled ppc && add_asflags -force_cpusubtype_ALL
4041         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4042         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4043         strip="${strip} -x"
4044         add_ldflags -Wl,-dynamic,-search_paths_first
4045         SLIBSUF=".dylib"
4046         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4047         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4048         objformat="macho"
4049         enabled x86_64 && objformat="macho64"
4050         enabled_any pic shared ||
4051             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4052         ;;
4053     mingw32*)
4054         if test $target_os = "mingw32ce"; then
4055             disable network
4056         else
4057             target_os=mingw32
4058         fi
4059         LIBTARGET=i386
4060         if enabled x86_64; then
4061             LIBTARGET="i386:x86-64"
4062         elif enabled arm; then
4063             LIBTARGET=arm-wince
4064         fi
4065         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4066         check_ldflags -Wl,--nxcompat
4067         check_ldflags -Wl,--dynamicbase
4068         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4069         shlibdir_default="$bindir_default"
4070         SLIBPREF=""
4071         SLIBSUF=".dll"
4072         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4073         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4074         dlltool="${cross_prefix}dlltool"
4075         if check_cmd lib.exe -list; then
4076             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4077             if enabled x86_64; then
4078                 LIBTARGET=x64
4079             fi
4080         elif check_cmd $dlltool --version; then
4081             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4082         fi
4083         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4084         SLIB_INSTALL_LINKS=
4085         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4086         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4087         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4088         objformat="win32"
4089         ranlib=:
4090         enable dos_paths
4091         ;;
4092     win32|win64)
4093         disable symver
4094         if enabled shared; then
4095             # Link to the import library instead of the normal static library
4096             # for shared libs.
4097             LD_LIB='%.lib'
4098             # Cannot build both shared and static libs with MSVC or icl.
4099             disable static
4100         fi
4101         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4102         shlibdir_default="$bindir_default"
4103         SLIBPREF=""
4104         SLIBSUF=".dll"
4105         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4106         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4107         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4108         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4109         SLIB_INSTALL_LINKS=
4110         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4111         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4112         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4113         objformat="win32"
4114         ranlib=:
4115         enable dos_paths
4116         ;;
4117     cygwin*)
4118         target_os=cygwin
4119         shlibdir_default="$bindir_default"
4120         SLIBPREF="cyg"
4121         SLIBSUF=".dll"
4122         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4123         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4124         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4125         SLIB_INSTALL_LINKS=
4126         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4127         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4128         objformat="win32"
4129         enable dos_paths
4130         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4131         ;;
4132     *-dos|freedos|opendos)
4133         network_extralibs="-lsocket"
4134         objformat="coff"
4135         enable dos_paths
4136         add_cppflags -U__STRICT_ANSI__
4137         ;;
4138     linux)
4139         enable dv1394
4140         ;;
4141     irix*)
4142         target_os=irix
4143         ranlib="echo ignoring ranlib"
4144         ;;
4145     os/2*)
4146         strip="lxlite -CS"
4147         ln_s="cp -f"
4148         objformat="aout"
4149         add_cppflags -D_GNU_SOURCE
4150         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4151         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4152         LIBSUF="_s.a"
4153         SLIBPREF=""
4154         SLIBSUF=".dll"
4155         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4156         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4157         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4158             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4159             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4160             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4161             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4162             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4163         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4164             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4165         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4166         enable dos_paths
4167         enable_weak os2threads
4168         ;;
4169     gnu/kfreebsd)
4170         add_cppflags -D_BSD_SOURCE
4171         ;;
4172     gnu)
4173         ;;
4174     qnx)
4175         add_cppflags -D_QNX_SOURCE
4176         network_extralibs="-lsocket"
4177         ;;
4178     symbian)
4179         SLIBSUF=".dll"
4180         enable dos_paths
4181         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4182         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4183         add_ldflags -Wl,--target1-abs,--no-undefined \
4184                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4185                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4186         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4187                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4188                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4189         ;;
4190     osf1)
4191         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4192         ;;
4193     minix)
4194         ;;
4195     plan9)
4196         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4197                      -D_REENTRANT_SOURCE        \
4198                      -D_RESEARCH_SOURCE         \
4199                      -DFD_SETSIZE=96            \
4200                      -DHAVE_SOCK_OPTS
4201         add_compat strtod.o strtod=avpriv_strtod
4202         network_extralibs='-lbsd'
4203         exeobjs=compat/plan9/main.o
4204         disable ffserver
4205         cp_f='cp'
4206         ;;
4207     none)
4208         ;;
4209     *)
4210         die "Unknown OS '$target_os'."
4211         ;;
4212 esac
4213
4214 # determine libc flavour
4215
4216 probe_libc(){
4217     pfx=$1
4218     pfx_no_=${pfx%_}
4219     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4220     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4221         eval ${pfx}libc_type=uclibc
4222         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4223     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4224         eval ${pfx}libc_type=glibc
4225         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4226     # MinGW headers can be installed on Cygwin, so check for newlib first.
4227     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4228         eval ${pfx}libc_type=newlib
4229         add_${pfx}cppflags -U__STRICT_ANSI__
4230     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4231     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4232         eval ${pfx}libc_type=mingw64
4233         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4234             add_compat msvcrt/snprintf.o
4235             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4236         fi
4237         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4238         eval test \$${pfx_no_}cc_type = "gcc" &&
4239             add_${pfx}cppflags -D__printf__=__gnu_printf__
4240     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4241          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4242         eval ${pfx}libc_type=mingw32
4243         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4244             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4245             die "ERROR: MinGW32 runtime version must be >= 3.15."
4246         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4247         eval test \$${pfx_no_}cc_type = "gcc" &&
4248             add_${pfx}cppflags -D__printf__=__gnu_printf__
4249     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4250         eval ${pfx}libc_type=msvcrt
4251         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4252         # 0x601 by default unless something else is set by the user.
4253         # This can easily lead to us detecting functions only present
4254         # in such new versions and producing binaries requiring windows 7.0.
4255         # Therefore explicitly set the default to XP unless the user has
4256         # set something else on the command line.
4257         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4258             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4259     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4260         eval ${pfx}libc_type=klibc
4261     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4262         eval ${pfx}libc_type=bionic
4263     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4264         eval ${pfx}libc_type=solaris
4265         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4266     fi
4267     check_${pfx}cc <<EOF
4268 #include <time.h>
4269 void *v = localtime_r;
4270 EOF
4271 test "$?" != 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
4272 #include <time.h>
4273 void *v = localtime_r;
4274 EOF
4275
4276 }
4277
4278 probe_libc
4279 test -n "$libc_type" && enable libc_$libc_type
4280 probe_libc host_
4281 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4282
4283 case $libc_type in
4284     bionic)
4285         add_compat strtod.o strtod=avpriv_strtod
4286         ;;
4287     msvcrt)
4288         add_compat strtod.o strtod=avpriv_strtod
4289         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4290                                      _snprintf=avpriv_snprintf  \
4291                                      vsnprintf=avpriv_vsnprintf
4292         ;;
4293 esac
4294
4295 # hacks for compiler/libc/os combinations
4296
4297 if enabled_all tms470 libc_glibc; then
4298     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4299     add_cppflags -D__USER_LABEL_PREFIX__=
4300     add_cppflags -D__builtin_memset=memset
4301     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4302     add_cflags   -pds=48    # incompatible redefinition of macro
4303 fi
4304
4305 if enabled_all ccc libc_glibc; then
4306     add_ldflags -Wl,-z,now  # calls to libots crash without this
4307 fi
4308
4309 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4310     add_cppflags '-I\$(SRC_PATH)/compat/float'
4311
4312 esc(){
4313     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4314 }
4315
4316 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4317
4318 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4319
4320 set_default $PATHS_LIST
4321 set_default nm
4322
4323 # we need to build at least one lib type
4324 if ! enabled_any static shared; then
4325     cat <<EOF
4326 At least one library type must be built.
4327 Specify --enable-static to build the static libraries or --enable-shared to
4328 build the shared libraries as well. To only build the shared libraries specify
4329 --disable-static in addition to --enable-shared.
4330 EOF
4331     exit 1;
4332 fi
4333
4334 die_license_disabled() {
4335     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4336 }
4337
4338 die_license_disabled_gpl() {
4339     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4340 }
4341
4342 die_license_disabled gpl frei0r
4343 die_license_disabled gpl libcdio
4344 die_license_disabled gpl libsmbclient
4345 die_license_disabled gpl libutvideo
4346 die_license_disabled gpl libvidstab
4347 die_license_disabled gpl libx264
4348 die_license_disabled gpl libx265
4349 die_license_disabled gpl libxavs
4350 die_license_disabled gpl libxvid
4351 die_license_disabled gpl libzvbi
4352 die_license_disabled gpl x11grab
4353
4354 die_license_disabled nonfree libaacplus
4355 die_license_disabled nonfree libfaac
4356 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4357 enabled gpl && die_license_disabled_gpl nonfree openssl
4358
4359 die_license_disabled version3 libopencore_amrnb
4360 die_license_disabled version3 libopencore_amrwb
4361 die_license_disabled version3 libsmbclient
4362 die_license_disabled version3 libvo_aacenc
4363 die_license_disabled version3 libvo_amrwbenc
4364
4365 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4366
4367 disabled optimizations || check_cflags -fomit-frame-pointer
4368
4369 enable_weak_pic() {
4370     disabled pic && return
4371     enable pic
4372     add_cppflags -DPIC
4373     case "$target_os" in
4374     mingw*|cygwin*)
4375         ;;
4376     *)
4377         add_cflags -fPIC
4378         ;;
4379     esac
4380     add_asflags  -fPIC
4381 }
4382
4383 enabled pic && enable_weak_pic
4384
4385 check_cc <<EOF || die "Symbol mangling check failed."
4386 int ff_extern;
4387 EOF
4388 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4389 extern_prefix=${sym%%ff_extern*}
4390
4391 check_cc <<EOF && enable_weak inline_asm
4392 void foo(void) { __asm__ volatile ("" ::); }
4393 EOF
4394
4395 _restrict=
4396 for restrict_keyword in restrict __restrict__ __restrict; do
4397     check_cc <<EOF && _restrict=$restrict_keyword && break
4398 void foo(char * $restrict_keyword p);
4399 EOF
4400 done
4401
4402 check_cc <<EOF && enable pragma_deprecated
4403 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4404 EOF
4405
4406 check_cc <<EOF && enable attribute_packed
4407 struct { int x; } __attribute__((packed)) x;
4408 EOF
4409
4410 check_cc <<EOF && enable attribute_may_alias
4411 union { int x; } __attribute__((may_alias)) x;
4412 EOF
4413
4414 check_cc <<EOF || die "endian test failed"
4415 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4416 EOF
4417 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4418
4419 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] ;then
4420     if ! enabled bigendian && enabled altivec ;then
4421         enable vsx
4422     fi
4423 fi
4424
4425 check_gas() {
4426     log "check_gas using '$as' as AS"
4427     # :vararg is used on aarch64, arm and ppc altivec
4428     check_as <<EOF || return 1
4429 .macro m n, y:vararg=0
4430 \n: .int \y
4431 .endm
4432 m x
4433 EOF
4434     # .altmacro is only used in arm asm
4435     ! enabled arm || check_as <<EOF || return 1
4436 .altmacro
4437 EOF
4438     enable gnu_as
4439     return 0
4440 }
4441
4442 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4443     nogas=:
4444     enabled_any arm aarch64 && nogas=die
4445     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4446     as_noop=-v
4447
4448     case $as_type in
4449         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4450         gcc)  gaspp_as_type=gas ;;
4451         *)    gaspp_as_type=$as_type ;;
4452     esac
4453
4454     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4455
4456     test "${as#*gas-preprocessor.pl}" != "$as" ||
4457     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4458         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4459
4460     if ! check_gas ; then
4461         as=${gas:=$as}
4462         check_gas || \
4463             $nogas "GNU assembler not found, install/update gas-preprocessor"
4464     fi
4465
4466     check_as <<EOF && enable as_func
4467 .func test
4468 .endfunc
4469 EOF
4470 fi
4471
4472 check_inline_asm inline_asm_labels '"1:\n"'
4473
4474 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4475
4476 if enabled aarch64; then
4477     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4478     # internal assembler in clang 3.3 does not support this instruction
4479     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4480     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4481
4482     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4483
4484 elif enabled alpha; then
4485
4486     check_cflags -mieee
4487
4488 elif enabled arm; then
4489
4490     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4491 float func(float a, float b){ return a+b; }
4492 EOF
4493
4494     enabled thumb && check_cflags -mthumb || check_cflags -marm
4495
4496     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4497         enable vfp_args
4498     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4499         case "${cross_prefix:-$cc}" in
4500             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4501             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4502 __asm__ (".eabi_attribute 28, 1");
4503 int main(void) { return 0; }
4504 EOF
4505         esac
4506         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4507     fi
4508
4509     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4510     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4511     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4512     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4513     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4514     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4515     enabled setend  && check_insn setend  'setend be'
4516
4517     [ $target_os = linux ] || [ $target_os = android ] ||
4518         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4519             $ARCH_EXT_LIST_ARM
4520
4521     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4522
4523     check_as <<EOF && enable as_dn_directive
4524 ra .dn d0.i16
4525 .unreq ra
4526 EOF
4527
4528     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4529
4530 elif enabled mips; then
4531
4532     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4533     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4534      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4535     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4536      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4537     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4538      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4539     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4540      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4541
4542 elif enabled parisc; then
4543
4544     if enabled gcc; then
4545         case $($cc -dumpversion) in
4546             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4547         esac
4548     fi
4549
4550 elif enabled ppc; then
4551
4552     enable local_aligned_8 local_aligned_16 local_aligned_32
4553
4554     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4555     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4556     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4557     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4558
4559     # AltiVec flags: The FSF version of GCC differs from the Apple version
4560     if enabled altivec; then
4561         check_cflags -maltivec -mabi=altivec &&
4562         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4563         check_cflags -faltivec
4564
4565         # check if our compiler supports Motorola AltiVec C API
4566         check_cc <<EOF || disable altivec
4567 $inc_altivec_h
4568 int main(void) {
4569     vector signed int v1 = (vector signed int) { 0 };
4570     vector signed int v2 = (vector signed int) { 1 };
4571     v1 = vec_add(v1, v2);
4572     return 0;
4573 }
4574 EOF
4575
4576         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4577     fi
4578
4579     if enabled vsx; then
4580         check_cflags -mvsx
4581     fi
4582 elif enabled x86; then
4583
4584     check_builtin rdtsc    intrin.h   "__rdtsc()"
4585     check_builtin mm_empty mmintrin.h "_mm_empty()"
4586
4587     enable local_aligned_8 local_aligned_16 local_aligned_32
4588
4589     # check whether EBP is available on x86
4590     # As 'i' is stored on the stack, this program will crash
4591     # if the base pointer is used to access it because the
4592     # base pointer is cleared in the inline assembly code.
4593     check_exec_crash <<EOF && enable ebp_available
4594 volatile int i=0;
4595 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4596 return i;
4597 EOF
4598
4599     # check whether EBX is available on x86
4600     check_inline_asm ebx_available '""::"b"(0)' &&
4601         check_inline_asm ebx_available '"":::"%ebx"'
4602
4603     # check whether xmm clobbers are supported
4604     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4605
4606     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4607         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4608
4609     # check whether binutils is new enough to compile SSSE3/MMXEXT
4610     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4611     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4612
4613     if ! disabled_any asm mmx yasm; then
4614         if check_cmd $yasmexe --version; then
4615             enabled x86_64 && yasm_extra="-m amd64"
4616             yasm_debug="-g dwarf2"
4617         elif check_cmd nasm -v; then
4618             yasmexe=nasm
4619             yasm_debug="-g -F dwarf"
4620             if enabled x86_64; then
4621                 case "$objformat" in
4622                     elf)   objformat=elf64 ;;
4623                     win32) objformat=win64 ;;
4624                 esac
4625             fi
4626         fi
4627
4628         YASMFLAGS="-f $objformat $yasm_extra"
4629         enabled pic               && append YASMFLAGS "-DPIC"
4630         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4631         case "$objformat" in
4632             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4633         esac
4634
4635         check_yasm "movbe ecx, [5]" && enable yasm ||
4636             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4637         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4638         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4639         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4640         check_yasm "CPU amdnop" || disable cpunop
4641     fi
4642
4643     case "$cpu" in
4644         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4645             disable fast_clz
4646         ;;
4647     esac
4648
4649 fi
4650
4651 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4652
4653 check_ldflags -Wl,--as-needed
4654 check_ldflags -Wl,-z,noexecstack
4655
4656 if check_func dlopen; then
4657     ldl=
4658 elif check_func dlopen -ldl; then
4659     ldl=-ldl
4660 fi
4661
4662 frei0r_filter_extralibs='$ldl'
4663 frei0r_src_filter_extralibs='$ldl'
4664 ladspa_filter_extralibs='$ldl'
4665
4666 if ! disabled network; then
4667     check_func getaddrinfo $network_extralibs
4668     check_func getservbyport $network_extralibs
4669     check_func inet_aton $network_extralibs
4670
4671     check_type netdb.h "struct addrinfo"
4672     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4673     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4674     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4675     check_type poll.h "struct pollfd"
4676     check_type netinet/sctp.h "struct sctp_event_subscribe"
4677     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4678     check_type netinet/in.h "struct sockaddr_in6"
4679     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4680     check_type "sys/types.h sys/socket.h" socklen_t
4681
4682     # Prefer arpa/inet.h over winsock2
4683     if check_header arpa/inet.h ; then
4684         check_func closesocket
4685     elif check_header winsock2.h ; then
4686         check_func_headers winsock2.h closesocket -lws2 &&
4687             network_extralibs="-lws2" ||
4688         { check_func_headers winsock2.h closesocket -lws2_32 &&
4689             network_extralibs="-lws2_32"; } || disable winsock2_h network
4690         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4691
4692         check_type ws2tcpip.h socklen_t
4693         check_type ws2tcpip.h "struct addrinfo"
4694         check_type ws2tcpip.h "struct group_source_req"
4695         check_type ws2tcpip.h "struct ip_mreq_source"
4696         check_type ws2tcpip.h "struct ipv6_mreq"
4697         check_type winsock2.h "struct pollfd"
4698         check_struct winsock2.h "struct sockaddr" sa_len
4699         check_type ws2tcpip.h "struct sockaddr_in6"
4700         check_type ws2tcpip.h "struct sockaddr_storage"
4701     else
4702         disable network
4703     fi
4704 fi
4705
4706 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4707 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4708 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4709 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4710 check_builtin sarestart signal.h "SA_RESTART"
4711 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4712
4713 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4714 check_func  ${malloc_prefix}memalign            && enable memalign
4715 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4716
4717 check_func  access
4718 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4719 check_func  fcntl
4720 check_func  fork
4721 check_func  gethrtime
4722 check_func  getopt
4723 check_func  getrusage
4724 check_func  gettimeofday
4725 check_func  gmtime_r
4726 check_func  isatty
4727 check_func  localtime_r
4728 check_func  mach_absolute_time
4729 check_func  mkstemp
4730 check_func  mmap
4731 check_func  mprotect
4732 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4733 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4734 check_func  sched_getaffinity
4735 check_func  setrlimit
4736 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4737 check_func  strerror_r
4738 check_func  sysconf
4739 check_func  sysctl
4740 check_func  usleep
4741
4742 check_func_headers conio.h kbhit
4743 check_func_headers io.h setmode
4744 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4745 check_func_headers stdlib.h getenv
4746
4747 check_func_headers windows.h CoTaskMemFree -lole32
4748 check_func_headers windows.h GetProcessAffinityMask
4749 check_func_headers windows.h GetProcessTimes
4750 check_func_headers windows.h GetSystemTimeAsFileTime
4751 check_func_headers windows.h MapViewOfFile
4752 check_func_headers windows.h MoveFileExA
4753 check_func_headers windows.h PeekNamedPipe
4754 check_func_headers windows.h SetConsoleTextAttribute
4755 check_func_headers windows.h Sleep
4756 check_func_headers windows.h VirtualAlloc
4757 check_struct windows.h "CONDITION_VARIABLE" Ptr
4758 check_func_headers glob.h glob
4759 enabled xlib &&
4760     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4761
4762 check_header cl/cl.h
4763 check_header direct.h
4764 check_header dlfcn.h
4765 check_header dxva.h
4766 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4767 check_header io.h
4768 check_header libcrystalhd/libcrystalhd_if.h
4769 check_header mach/mach_time.h
4770 check_header malloc.h
4771 check_header net/udplite.h
4772 check_header poll.h
4773 check_header sys/mman.h
4774 check_header sys/param.h
4775 check_header sys/resource.h
4776 check_header sys/select.h
4777 check_header sys/time.h
4778 check_header sys/un.h
4779 check_header termios.h
4780 check_header unistd.h
4781 check_header vdpau/vdpau.h
4782 check_header vdpau/vdpau_x11.h
4783 check_header VideoDecodeAcceleration/VDADecoder.h
4784 check_header windows.h
4785 check_header X11/extensions/XvMClib.h
4786 check_header asm/types.h
4787
4788 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4789 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4790 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4791
4792 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4793
4794 if ! disabled w32threads && ! enabled pthreads; then
4795     check_func_headers "windows.h process.h" _beginthreadex &&
4796         enable w32threads || disable w32threads
4797 fi
4798
4799 # check for some common methods of building with pthread support
4800 # do this before the optional library checks as some of them require pthreads
4801 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4802     enable pthreads
4803     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4804         add_cflags -pthread
4805         add_extralibs -pthread
4806     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4807         add_cflags -pthreads
4808         add_extralibs -pthreads
4809     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4810         add_cflags -ldl -pthread
4811         add_extralibs -ldl -pthread
4812     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4813         add_extralibs -lpthreadGC2
4814     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4815         :
4816     elif ! check_func pthread_join && ! check_func pthread_create; then
4817         disable pthreads
4818     fi
4819     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4820 fi
4821
4822
4823 if enabled pthreads; then
4824   check_func pthread_cancel
4825 fi
4826
4827 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4828 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4829 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
4830
4831 check_lib math.h sin -lm && LIBM="-lm"