Merge commit '35177ba77ff60a8b8839783f57e44bcc4214507a'
[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
93 Licensing options:
94   --enable-gpl             allow use of GPL code, the resulting libs
95                            and binaries will be under GPL [no]
96   --enable-version3        upgrade (L)GPL to version 3 [no]
97   --enable-nonfree         allow use of nonfree code, the resulting libs
98                            and binaries will be unredistributable [no]
99
100 Configuration options:
101   --disable-static         do not build static libraries [no]
102   --enable-shared          build shared libraries [no]
103   --enable-small           optimize for size instead of speed
104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
105   --enable-gray            enable full grayscale support (slower color)
106   --disable-swscale-alpha  disable alpha channel support in swscale
107   --disable-all            disable building components, libraries and programs
108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
109   --enable-raise-major     increase major version numbers in sonames [no]
110
111 Program options:
112   --disable-programs       do not build command line programs
113   --disable-ffmpeg         disable ffmpeg build
114   --disable-ffplay         disable ffplay build
115   --disable-ffprobe        disable ffprobe build
116   --disable-ffserver       disable ffserver build
117
118 Documentation options:
119   --disable-doc            do not build documentation
120   --disable-htmlpages      do not build HTML documentation pages
121   --disable-manpages       do not build man documentation pages
122   --disable-podpages       do not build POD documentation pages
123   --disable-txtpages       do not build text documentation pages
124
125 Component options:
126   --disable-avdevice       disable libavdevice build
127   --disable-avcodec        disable libavcodec build
128   --disable-avformat       disable libavformat build
129   --disable-avutil         disable libavutil build
130   --disable-swresample     disable libswresample build
131   --disable-swscale        disable libswscale build
132   --disable-postproc       disable libpostproc build
133   --disable-avfilter       disable libavfilter build
134   --enable-avresample      enable libavresample build [no]
135   --disable-pthreads       disable pthreads [auto]
136   --disable-w32threads     disable Win32 threads [auto]
137   --disable-os2threads     disable OS/2 threads [auto]
138   --disable-network        disable network support [no]
139   --disable-dct            disable DCT code
140   --disable-dwt            disable DWT code
141   --disable-error-resilience disable error resilience code
142   --disable-lsp            disable LSP code
143   --disable-lzo            disable LZO decoder code
144   --disable-mdct           disable MDCT code
145   --disable-rdft           disable RDFT code
146   --disable-fft            disable FFT code
147
148 Hardware accelerators:
149   --disable-dxva2          disable DXVA2 code [autodetect]
150   --disable-vaapi          disable VAAPI code [autodetect]
151   --disable-vda            disable VDA code [autodetect]
152   --disable-vdpau          disable VDPAU code [autodetect]
153
154 Individual component options:
155   --disable-everything     disable all components listed below
156   --disable-encoder=NAME   disable encoder NAME
157   --enable-encoder=NAME    enable encoder NAME
158   --disable-encoders       disable all encoders
159   --disable-decoder=NAME   disable decoder NAME
160   --enable-decoder=NAME    enable decoder NAME
161   --disable-decoders       disable all decoders
162   --disable-hwaccel=NAME   disable hwaccel NAME
163   --enable-hwaccel=NAME    enable hwaccel NAME
164   --disable-hwaccels       disable all hwaccels
165   --disable-muxer=NAME     disable muxer NAME
166   --enable-muxer=NAME      enable muxer NAME
167   --disable-muxers         disable all muxers
168   --disable-demuxer=NAME   disable demuxer NAME
169   --enable-demuxer=NAME    enable demuxer NAME
170   --disable-demuxers       disable all demuxers
171   --enable-parser=NAME     enable parser NAME
172   --disable-parser=NAME    disable parser NAME
173   --disable-parsers        disable all parsers
174   --enable-bsf=NAME        enable bitstream filter NAME
175   --disable-bsf=NAME       disable bitstream filter NAME
176   --disable-bsfs           disable all bitstream filters
177   --enable-protocol=NAME   enable protocol NAME
178   --disable-protocol=NAME  disable protocol NAME
179   --disable-protocols      disable all protocols
180   --enable-indev=NAME      enable input device NAME
181   --disable-indev=NAME     disable input device NAME
182   --disable-indevs         disable input devices
183   --enable-outdev=NAME     enable output device NAME
184   --disable-outdev=NAME    disable output device NAME
185   --disable-outdevs        disable output devices
186   --disable-devices        disable all devices
187   --enable-filter=NAME     enable filter NAME
188   --disable-filter=NAME    disable filter NAME
189   --disable-filters        disable all filters
190
191 External library support:
192   --enable-avisynth        enable reading of AviSynth script files [no]
193   --disable-bzlib          disable bzlib [autodetect]
194   --enable-fontconfig      enable fontconfig
195   --enable-frei0r          enable frei0r video filtering
196   --enable-gnutls          enable gnutls [no]
197   --disable-iconv          disable iconv [autodetect]
198   --enable-ladspa          enable LADSPA audio filtering
199   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
200   --enable-libass          enable libass subtitles rendering [no]
201   --enable-libbluray       enable BluRay reading using libbluray [no]
202   --enable-libcaca         enable textual display using libcaca
203   --enable-libcelt         enable CELT decoding via libcelt [no]
204   --enable-libcdio         enable audio CD grabbing with libcdio
205   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
206                            and libraw1394 [no]
207   --enable-libfaac         enable AAC encoding via libfaac [no]
208   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
209   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
210   --enable-libfreetype     enable libfreetype [no]
211   --enable-libgme          enable Game Music Emu via libgme [no]
212   --enable-libgsm          enable GSM de/encoding via libgsm [no]
213   --enable-libiec61883     enable iec61883 via libiec61883 [no]
214   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
215   --enable-libmodplug      enable ModPlug via libmodplug [no]
216   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
217   --enable-libnut          enable NUT (de)muxing via libnut,
218                            native (de)muxer exists [no]
219   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
220   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
221   --enable-libopencv       enable video filtering via libopencv [no]
222   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
223   --enable-libopus         enable Opus decoding via libopus [no]
224   --enable-libpulse        enable Pulseaudio input via libpulse [no]
225   --enable-libquvi         enable quvi input via libquvi [no]
226   --enable-librtmp         enable RTMP[E] support via librtmp [no]
227   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
228   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
229   --enable-libsoxr         enable Include libsoxr resampling [no]
230   --enable-libspeex        enable Speex de/encoding via libspeex [no]
231   --enable-libssh          enable SFTP protocol via libssh [no]
232   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
233   --enable-libtheora       enable Theora encoding via libtheora [no]
234   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
235   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
236   --enable-libv4l2         enable libv4l2/v4l-utils [no]
237   --enable-libvidstab      enable video stabilization using vid.stab [no]
238   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
239   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
240   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
241                            native implementation exists [no]
242   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
243   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
244   --enable-libwebp         enable WebP encoding via libwebp [no]
245   --enable-libx264         enable H.264 encoding via x264 [no]
246   --enable-libx265         enable HEVC encoding via x265 [no]
247   --enable-libxavs         enable AVS encoding via xavs [no]
248   --enable-libxvid         enable Xvid encoding via xvidcore,
249                            native MPEG-4/Xvid encoder exists [no]
250   --enable-libzmq          enable message passing via libzmq [no]
251   --enable-libzvbi         enable teletext support via libzvbi [no]
252   --enable-decklink        enable Blackmagick DeckLink output [no]
253   --enable-openal          enable OpenAL 1.1 capture support [no]
254   --enable-opencl          enable OpenCL code
255   --enable-opengl          enable OpenGL rendering [no]
256   --enable-openssl         enable openssl [no]
257   --enable-x11grab         enable X11 grabbing [no]
258   --disable-xlib           disable xlib [autodetect]
259   --disable-zlib           disable zlib [autodetect]
260
261 Toolchain options:
262   --arch=ARCH              select architecture [$arch]
263   --cpu=CPU                select the minimum required CPU (affects
264                            instruction selection, may crash on older CPUs)
265   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
266   --progs-suffix=SUFFIX    program name suffix []
267   --enable-cross-compile   assume a cross-compiler is used
268   --sysroot=PATH           root of cross-build tree
269   --sysinclude=PATH        location of cross-build system headers
270   --target-os=OS           compiler targets OS [$target_os]
271   --target-exec=CMD        command to run executables on target
272   --target-path=DIR        path to view of build directory on target
273   --target-samples=DIR     path to samples directory on target
274   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
275   --toolchain=NAME         set tool defaults according to NAME
276   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
277   --nm=NM                  use nm tool NM [$nm_default]
278   --ar=AR                  use archive tool AR [$ar_default]
279   --as=AS                  use assembler AS [$as_default]
280   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
281   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
282   --cc=CC                  use C compiler CC [$cc_default]
283   --cxx=CXX                use C compiler CXX [$cxx_default]
284   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
285   --ld=LD                  use linker LD [$ld_default]
286   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
287   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
288   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
289   --host-cc=HOSTCC         use host C compiler HOSTCC
290   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
291   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
292   --host-ld=HOSTLD         use host linker HOSTLD
293   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
294   --host-libs=HLIBS        use libs HLIBS when linking for host
295   --host-os=OS             compiler host OS [$target_os]
296   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
297   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
298   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
299   --extra-libs=ELIBS       add ELIBS [$ELIBS]
300   --extra-version=STRING   version string suffix []
301   --optflags=OPTFLAGS      override optimization-related compiler flags
302   --build-suffix=SUFFIX    library name suffix []
303   --enable-pic             build position-independent code
304   --enable-thumb           compile for Thumb instruction set
305   --enable-lto             use link-time optimization
306
307 Advanced options (experts only):
308   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
309   --disable-symver         disable symbol versioning
310   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
311   --disable-safe-bitstream-reader
312                            disable buffer boundary checking in bitreaders
313                            (faster, but may crash)
314   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
315   --enable-sram            allow use of on-chip SRAM
316
317 Optimization options (experts only):
318   --disable-asm            disable all assembler optimizations
319   --disable-altivec        disable AltiVec optimizations
320   --disable-amd3dnow       disable 3DNow! optimizations
321   --disable-amd3dnowext    disable 3DNow! extended optimizations
322   --disable-mmx            disable MMX optimizations
323   --disable-mmxext         disable MMXEXT optimizations
324   --disable-sse            disable SSE optimizations
325   --disable-sse2           disable SSE2 optimizations
326   --disable-sse3           disable SSE3 optimizations
327   --disable-ssse3          disable SSSE3 optimizations
328   --disable-sse4           disable SSE4 optimizations
329   --disable-sse42          disable SSE4.2 optimizations
330   --disable-avx            disable AVX optimizations
331   --disable-xop            disable XOP optimizations
332   --disable-fma3           disable FMA3 optimizations
333   --disable-fma4           disable FMA4 optimizations
334   --disable-avx2           disable AVX2 optimizations
335   --disable-armv5te        disable armv5te optimizations
336   --disable-armv6          disable armv6 optimizations
337   --disable-armv6t2        disable armv6t2 optimizations
338   --disable-vfp            disable VFP optimizations
339   --disable-neon           disable NEON optimizations
340   --disable-inline-asm     disable use of inline assembler
341   --disable-yasm           disable use of yasm assembler
342   --disable-mips32r2       disable MIPS32R2 optimizations
343   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
344   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
345   --disable-mipsfpu        disable floating point MIPS optimizations
346   --disable-fast-unaligned consider unaligned accesses slow
347
348 Developer options (useful when working on FFmpeg itself):
349   --disable-debug          disable debugging symbols
350   --enable-debug=LEVEL     set the debug level [$debuglevel]
351   --disable-optimizations  disable compiler optimizations
352   --enable-extra-warnings  enable more compiler warnings
353   --disable-stripping      disable stripping of executables and shared libraries
354   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
355                            2 causes a slowdown at runtime.
356   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
357   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
358                            leaks and errors, using the specified valgrind binary.
359                            Cannot be combined with --target-exec
360   --enable-ftrapv          Trap arithmetic overflows
361   --samples=PATH           location of test samples for FATE, if not set use
362                            \$FATE_SAMPLES at make invocation time.
363   --enable-neon-clobber-test check NEON registers for clobbering (should be
364                            used only for debugging purposes)
365   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
366                            should be used only for debugging purposes)
367   --enable-random          randomly enable/disable components
368   --disable-random
369   --enable-random=LIST     randomly enable/disable specific components or
370   --disable-random=LIST    component groups. LIST is a comma-separated list
371                            of NAME[:PROB] entries where NAME is a component
372                            (group) and PROB the probability associated with
373                            NAME (default 0.5).
374   --random-seed=VALUE      seed value for --enable/disable-random
375
376 NOTE: Object files are built at the place where configure is launched.
377 EOF
378   exit 0
379 }
380
381 quotes='""'
382
383 log(){
384     echo "$@" >> $logfile
385 }
386
387 log_file(){
388     log BEGIN $1
389     pr -n -t $1 >> $logfile
390     log END $1
391 }
392
393 echolog(){
394     log "$@"
395     echo "$@"
396 }
397
398 warn(){
399     log "WARNING: $*"
400     WARNINGS="${WARNINGS}WARNING: $*\n"
401 }
402
403 die(){
404     echolog "$@"
405     cat <<EOF
406
407 If you think configure made a mistake, make sure you are using the latest
408 version from Git.  If the latest version fails, report the problem to the
409 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
410 EOF
411     if disabled logging; then
412         cat <<EOF
413 Rerun configure with logging enabled (do not use --disable-logging), and
414 include the log this produces with your report.
415 EOF
416     else
417         cat <<EOF
418 Include the log file "$logfile" produced by configure as this will help
419 solving the problem.
420 EOF
421     fi
422     exit 1
423 }
424
425 # Avoid locale weirdness, besides we really just want to translate ASCII.
426 toupper(){
427     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
428 }
429
430 tolower(){
431     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
432 }
433
434 c_escape(){
435     echo "$*" | sed 's/["\\]/\\\0/g'
436 }
437
438 sh_quote(){
439     v=$(echo "$1" | sed "s/'/'\\\\''/g")
440     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
441     echo "$v"
442 }
443
444 cleanws(){
445     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
446 }
447
448 filter(){
449     pat=$1
450     shift
451     for v; do
452         eval "case $v in $pat) echo $v ;; esac"
453     done
454 }
455
456 filter_out(){
457     pat=$1
458     shift
459     for v; do
460         eval "case $v in $pat) ;; *) echo $v ;; esac"
461     done
462 }
463
464 map(){
465     m=$1
466     shift
467     for v; do eval $m; done
468 }
469
470 add_suffix(){
471     suffix=$1
472     shift
473     for v; do echo ${v}${suffix}; done
474 }
475
476 set_all(){
477     value=$1
478     shift
479     for var in $*; do
480         eval $var=$value
481     done
482 }
483
484 set_weak(){
485     value=$1
486     shift
487     for var; do
488         eval : \${$var:=$value}
489     done
490 }
491
492 sanitize_var_name(){
493     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
494 }
495
496 set_safe(){
497     var=$1
498     shift
499     eval $(sanitize_var_name "$var")='$*'
500 }
501
502 get_safe(){
503     eval echo \$$(sanitize_var_name "$1")
504 }
505
506 pushvar(){
507     for pvar in $*; do
508         eval level=\${${pvar}_level:=0}
509         eval ${pvar}_${level}="\$$pvar"
510         eval ${pvar}_level=$(($level+1))
511     done
512 }
513
514 popvar(){
515     for pvar in $*; do
516         eval level=\${${pvar}_level:-0}
517         test $level = 0 && continue
518         eval level=$(($level-1))
519         eval $pvar="\${${pvar}_${level}}"
520         eval ${pvar}_level=$level
521         eval unset ${pvar}_${level}
522     done
523 }
524
525 enable(){
526     set_all yes $*
527 }
528
529 disable(){
530     set_all no $*
531 }
532
533 enable_weak(){
534     set_weak yes $*
535 }
536
537 disable_weak(){
538     set_weak no $*
539 }
540
541 enable_safe(){
542     for var; do
543         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
544     done
545 }
546
547 disable_safe(){
548     for var; do
549         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
550     done
551 }
552
553 do_enable_deep(){
554     for var; do
555         enabled $var && continue
556         eval sel="\$${var}_select"
557         eval sgs="\$${var}_suggest"
558         pushvar var sgs
559         enable_deep $sel
560         popvar sgs
561         enable_deep_weak $sgs
562         popvar var
563     done
564 }
565
566 enable_deep(){
567     do_enable_deep $*
568     enable $*
569 }
570
571 enable_deep_weak(){
572     for var; do
573         disabled $var && continue
574         pushvar var
575         do_enable_deep $var
576         popvar var
577         enable_weak $var
578     done
579 }
580
581 enabled(){
582     test "${1#!}" = "$1" && op== || op=!=
583     eval test "x\$${1#!}" $op "xyes"
584 }
585
586 disabled(){
587     test "${1#!}" = "$1" && op== || op=!=
588     eval test "x\$${1#!}" $op "xno"
589 }
590
591 enabled_all(){
592     for opt; do
593         enabled $opt || return 1
594     done
595 }
596
597 disabled_all(){
598     for opt; do
599         disabled $opt || return 1
600     done
601 }
602
603 enabled_any(){
604     for opt; do
605         enabled $opt && return 0
606     done
607 }
608
609 disabled_any(){
610     for opt; do
611         disabled $opt && return 0
612     done
613     return 1
614 }
615
616 set_default(){
617     for opt; do
618         eval : \${$opt:=\$${opt}_default}
619     done
620 }
621
622 is_in(){
623     value=$1
624     shift
625     for var in $*; do
626         [ $var = $value ] && return 0
627     done
628     return 1
629 }
630
631 do_check_deps(){
632     for cfg; do
633         cfg="${cfg#!}"
634         enabled ${cfg}_checking && die "Circular dependency for $cfg."
635         disabled ${cfg}_checking && continue
636         enable ${cfg}_checking
637         append allopts $cfg
638
639         eval dep_all="\$${cfg}_deps"
640         eval dep_any="\$${cfg}_deps_any"
641         eval dep_sel="\$${cfg}_select"
642         eval dep_sgs="\$${cfg}_suggest"
643         eval dep_ifa="\$${cfg}_if"
644         eval dep_ifn="\$${cfg}_if_any"
645
646         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
647         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
648         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
649
650         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
651         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
652         enabled_all  $dep_all || disable $cfg
653         enabled_any  $dep_any || disable $cfg
654         disabled_any $dep_sel && disable $cfg
655
656         if enabled $cfg; then
657             enable_deep $dep_sel
658             enable_deep_weak $dep_sgs
659         fi
660
661         disable ${cfg}_checking
662     done
663 }
664
665 check_deps(){
666     unset allopts
667
668     do_check_deps "$@"
669
670     for cfg in $allopts; do
671         enabled $cfg || continue
672         eval dep_extralibs="\$${cfg}_extralibs"
673         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
674     done
675 }
676
677 print_config(){
678     pfx=$1
679     files=$2
680     shift 2
681     map 'eval echo "$v \${$v:-no}"' "$@" |
682     awk "BEGIN { split(\"$files\", files) }
683         {
684             c = \"$pfx\" toupper(\$1);
685             v = \$2;
686             sub(/yes/, 1, v);
687             sub(/no/,  0, v);
688             for (f in files) {
689                 file = files[f];
690                 if (file ~ /\\.h\$/) {
691                     printf(\"#define %s %d\\n\", c, v) >>file;
692                 } else if (file ~ /\\.asm\$/) {
693                     printf(\"%%define %s %d\\n\", c, v) >>file;
694                 } else if (file ~ /\\.mak\$/) {
695                     n = -v ? \"\" : \"!\";
696                     printf(\"%s%s=yes\\n\", n, c) >>file;
697                 } else if (file ~ /\\.texi\$/) {
698                     pre = -v ? \"\" : \"@c \";
699                     yesno = \$2;
700                     c2 = tolower(c);
701                     gsub(/_/, \"-\", c2);
702                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
703                 }
704             }
705         }"
706 }
707
708 print_enabled(){
709     suf=$1
710     shift
711     for v; do
712         enabled $v && printf "%s\n" ${v%$suf};
713     done
714 }
715
716 append(){
717     var=$1
718     shift
719     eval "$var=\"\$$var $*\""
720 }
721
722 prepend(){
723     var=$1
724     shift
725     eval "$var=\"$* \$$var\""
726 }
727
728 add_cppflags(){
729     append CPPFLAGS "$@"
730 }
731
732 add_cflags(){
733     append CFLAGS $($cflags_filter "$@")
734 }
735
736 add_cxxflags(){
737     append CXXFLAGS $($cflags_filter "$@")
738 }
739
740 add_asflags(){
741     append ASFLAGS $($asflags_filter "$@")
742 }
743
744 add_ldflags(){
745     append LDFLAGS $($ldflags_filter "$@")
746 }
747
748 add_stripflags(){
749     append ASMSTRIPFLAGS "$@"
750 }
751
752 add_extralibs(){
753     prepend extralibs $($ldflags_filter "$@")
754 }
755
756 add_host_cppflags(){
757     append host_cppflags "$@"
758 }
759
760 add_host_cflags(){
761     append host_cflags $($host_cflags_filter "$@")
762 }
763
764 add_host_ldflags(){
765     append host_ldflags $($host_ldflags_filter "$@")
766 }
767
768 add_compat(){
769     append compat_objs $1
770     shift
771     map 'add_cppflags -D$v' "$@"
772 }
773
774 check_cmd(){
775     log "$@"
776     "$@" >> $logfile 2>&1
777 }
778
779 check_stat(){
780     log check_stat "$@"
781     stat "$1" >> $logfile 2>&1
782 }
783
784 cc_o(){
785     eval printf '%s\\n' $CC_O
786 }
787
788 cc_e(){
789     eval printf '%s\\n' $CC_E
790 }
791
792 check_cc(){
793     log check_cc "$@"
794     cat > $TMPC
795     log_file $TMPC
796     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
797 }
798
799 check_cxx(){
800     log check_cxx "$@"
801     cat > $TMPCPP
802     log_file $TMPCPP
803     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
804 }
805
806 check_oc(){
807     log check_oc "$@"
808     cat > $TMPM
809     log_file $TMPM
810     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
811 }
812
813 check_cpp(){
814     log check_cpp "$@"
815     cat > $TMPC
816     log_file $TMPC
817     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
818 }
819
820 as_o(){
821     eval printf '%s\\n' $AS_O
822 }
823
824 check_as(){
825     log check_as "$@"
826     cat > $TMPS
827     log_file $TMPS
828     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
829 }
830
831 check_inline_asm(){
832     log check_inline_asm "$@"
833     name="$1"
834     code="$2"
835     shift 2
836     disable $name
837     check_cc "$@" <<EOF && enable $name
838 void foo(void){ __asm__ volatile($code); }
839 EOF
840 }
841
842 check_insn(){
843     log check_insn "$@"
844     check_inline_asm ${1}_inline "\"$2\""
845     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
846 }
847
848 check_yasm(){
849     log check_yasm "$@"
850     echo "$1" > $TMPS
851     log_file $TMPS
852     shift 1
853     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
854 }
855
856 ld_o(){
857     eval printf '%s\\n' $LD_O
858 }
859
860 check_ld(){
861     log check_ld "$@"
862     type=$1
863     shift 1
864     flags=$(filter_out '-l*|*.so' $@)
865     libs=$(filter '-l*|*.so' $@)
866     check_$type $($cflags_filter $flags) || return
867     flags=$($ldflags_filter $flags)
868     libs=$($ldflags_filter $libs)
869     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
870 }
871
872 print_include(){
873     hdr=$1
874     test "${hdr%.h}" = "${hdr}" &&
875         echo "#include $hdr"    ||
876         echo "#include <$hdr>"
877 }
878
879 check_code(){
880     log check_code "$@"
881     check=$1
882     headers=$2
883     code=$3
884     shift 3
885     {
886         for hdr in $headers; do
887             print_include $hdr
888         done
889         echo "int main(void) { $code; return 0; }"
890     } | check_$check "$@"
891 }
892
893 check_cppflags(){
894     log check_cppflags "$@"
895     check_cc "$@" <<EOF && append CPPFLAGS "$@"
896 int x;
897 EOF
898 }
899
900 test_cflags(){
901     log test_cflags "$@"
902     set -- $($cflags_filter "$@")
903     check_cc "$@" <<EOF
904 int x;
905 EOF
906 }
907
908 check_cflags(){
909     log check_cflags "$@"
910     test_cflags "$@" && add_cflags "$@"
911 }
912
913 check_cxxflags(){
914     log check_cxxflags "$@"
915     set -- $($cflags_filter "$@")
916     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
917 int x;
918 EOF
919 }
920
921 test_ldflags(){
922     log test_ldflags "$@"
923     check_ld "cc" "$@" <<EOF
924 int main(void){ return 0; }
925 EOF
926 }
927
928 check_ldflags(){
929     log check_ldflags "$@"
930     test_ldflags "$@" && add_ldflags "$@"
931 }
932
933 test_stripflags(){
934     log test_stripflags "$@"
935     # call check_cc to get a fresh TMPO
936     check_cc <<EOF
937 int main(void) { return 0; }
938 EOF
939     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
940 }
941
942 check_stripflags(){
943     log check_stripflags "$@"
944     test_stripflags "$@" && add_stripflags "$@"
945 }
946
947 check_header(){
948     log check_header "$@"
949     header=$1
950     shift
951     disable_safe $header
952     check_cpp "$@" <<EOF && enable_safe $header
953 #include <$header>
954 int x;
955 EOF
956 }
957
958 check_header_oc(){
959     log check_header_oc "$@"
960     rm -f -- "$TMPO"
961     header=$1
962     shift
963     disable_safe $header
964     {
965        echo "#include <$header>"
966        echo "int main(void) { return 0; }"
967     } | check_oc && check_stat "$TMPO" && enable_safe $headers
968 }
969
970 check_func(){
971     log check_func "$@"
972     func=$1
973     shift
974     disable $func
975     check_ld "cc" "$@" <<EOF && enable $func
976 extern int $func();
977 int main(void){ $func(); }
978 EOF
979 }
980
981 check_mathfunc(){
982     log check_mathfunc "$@"
983     func=$1
984     narg=$2
985     shift 2
986     test $narg = 2 && args="f, g" || args="f"
987     disable $func
988     check_ld "cc" "$@" <<EOF && enable $func
989 #include <math.h>
990 float foo(float f, float g) { return $func($args); }
991 int main(void){ return (int) foo; }
992 EOF
993 }
994
995 check_func_headers(){
996     log check_func_headers "$@"
997     headers=$1
998     funcs=$2
999     shift 2
1000     {
1001         for hdr in $headers; do
1002             print_include $hdr
1003         done
1004         for func in $funcs; do
1005             echo "long check_$func(void) { return (long) $func; }"
1006         done
1007         echo "int main(void) { return 0; }"
1008     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1009 }
1010
1011 check_class_headers_cpp(){
1012     log check_class_headers_cpp "$@"
1013     headers=$1
1014     classes=$2
1015     shift 2
1016     {
1017         for hdr in $headers; do
1018             echo "#include <$hdr>"
1019         done
1020         echo "int main(void) { "
1021         i=1
1022         for class in $classes; do
1023             echo "$class obj$i;"
1024             i=$(expr $i + 1)
1025         done
1026         echo "return 0; }"
1027     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1028 }
1029
1030 check_cpp_condition(){
1031     log check_cpp_condition "$@"
1032     header=$1
1033     condition=$2
1034     shift 2
1035     check_cpp "$@" <<EOF
1036 #include <$header>
1037 #if !($condition)
1038 #error "unsatisfied condition: $condition"
1039 #endif
1040 EOF
1041 }
1042
1043 check_lib(){
1044     log check_lib "$@"
1045     header="$1"
1046     func="$2"
1047     shift 2
1048     check_header $header && check_func $func "$@" && add_extralibs "$@"
1049 }
1050
1051 check_lib2(){
1052     log check_lib2 "$@"
1053     headers="$1"
1054     funcs="$2"
1055     shift 2
1056     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1057 }
1058
1059 check_lib_cpp(){
1060     log check_lib_cpp "$@"
1061     headers="$1"
1062     classes="$2"
1063     shift 2
1064     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1065 }
1066
1067 check_pkg_config(){
1068     log check_pkg_config "$@"
1069     pkgandversion="$1"
1070     pkg="${1%% *}"
1071     headers="$2"
1072     funcs="$3"
1073     shift 3
1074     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1075     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1076     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1077     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1078         set_safe ${pkg}_cflags $pkg_cflags   &&
1079         set_safe ${pkg}_libs   $pkg_libs
1080 }
1081
1082 check_exec(){
1083     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1084 }
1085
1086 check_exec_crash(){
1087     code=$(cat)
1088
1089     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1090     # are safe but may not be available everywhere.  Thus we use
1091     # raise(SIGTERM) instead.  The check is run in a subshell so we
1092     # can redirect the "Terminated" message from the shell.  SIGBUS
1093     # is not defined by standard C so it is used conditionally.
1094
1095     (check_exec "$@") >> $logfile 2>&1 <<EOF
1096 #include <signal.h>
1097 static void sighandler(int sig){
1098     raise(SIGTERM);
1099 }
1100 int foo(void){
1101     $code
1102 }
1103 int (*func_ptr)(void) = foo;
1104 int main(void){
1105     signal(SIGILL, sighandler);
1106     signal(SIGFPE, sighandler);
1107     signal(SIGSEGV, sighandler);
1108 #ifdef SIGBUS
1109     signal(SIGBUS, sighandler);
1110 #endif
1111     return func_ptr();
1112 }
1113 EOF
1114 }
1115
1116 check_type(){
1117     log check_type "$@"
1118     headers=$1
1119     type=$2
1120     shift 2
1121     disable_safe "$type"
1122     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1123 }
1124
1125 check_struct(){
1126     log check_struct "$@"
1127     headers=$1
1128     struct=$2
1129     member=$3
1130     shift 3
1131     disable_safe "${struct}_${member}"
1132     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1133         enable_safe "${struct}_${member}"
1134 }
1135
1136 check_builtin(){
1137     log check_builtin "$@"
1138     name=$1
1139     headers=$2
1140     builtin=$3
1141     shift 3
1142     disable "$name"
1143     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1144 }
1145
1146 check_compile_assert(){
1147     log check_compile_assert "$@"
1148     name=$1
1149     headers=$2
1150     condition=$3
1151     shift 3
1152     disable "$name"
1153     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1154 }
1155
1156 require(){
1157     name="$1"
1158     header="$2"
1159     func="$3"
1160     shift 3
1161     check_lib $header $func "$@" || die "ERROR: $name not found"
1162 }
1163
1164 require2(){
1165     name="$1"
1166     headers="$2"
1167     func="$3"
1168     shift 3
1169     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1170 }
1171
1172 require_cpp(){
1173     name="$1"
1174     headers="$2"
1175     classes="$3"
1176     shift 3
1177     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1178 }
1179
1180 require_pkg_config(){
1181     pkg="$1"
1182     check_pkg_config "$@" || die "ERROR: $pkg not found"
1183     add_cflags    $(get_safe ${pkg}_cflags)
1184     add_extralibs $(get_safe ${pkg}_libs)
1185 }
1186
1187 require_libfreetype(){
1188     log require_libfreetype "$@"
1189     pkg="freetype2"
1190     check_cmd $pkg_config --exists --print-errors $pkg \
1191       || die "ERROR: $pkg not found"
1192     pkg_cflags=$($pkg_config --cflags $pkg)
1193     pkg_libs=$($pkg_config --libs $pkg)
1194     {
1195         echo "#include <ft2build.h>"
1196         echo "#include FT_FREETYPE_H"
1197         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1198         echo "int main(void) { return 0; }"
1199     } | check_ld "cc" $pkg_cflags $pkg_libs \
1200       && set_safe ${pkg}_cflags $pkg_cflags \
1201       && set_safe ${pkg}_libs   $pkg_libs \
1202       || die "ERROR: $pkg not found"
1203     add_cflags    $(get_safe ${pkg}_cflags)
1204     add_extralibs $(get_safe ${pkg}_libs)
1205 }
1206
1207 hostcc_e(){
1208     eval printf '%s\\n' $HOSTCC_E
1209 }
1210
1211 hostcc_o(){
1212     eval printf '%s\\n' $HOSTCC_O
1213 }
1214
1215 check_host_cc(){
1216     log check_host_cc "$@"
1217     cat > $TMPC
1218     log_file $TMPC
1219     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1220 }
1221
1222 check_host_cpp(){
1223     log check_host_cpp "$@"
1224     cat > $TMPC
1225     log_file $TMPC
1226     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1227 }
1228
1229 check_host_cppflags(){
1230     log check_host_cppflags "$@"
1231     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1232 int x;
1233 EOF
1234 }
1235
1236 check_host_cflags(){
1237     log check_host_cflags "$@"
1238     set -- $($host_cflags_filter "$@")
1239     check_host_cc "$@" <<EOF && append host_cflags "$@"
1240 int x;
1241 EOF
1242 }
1243
1244 check_host_cpp_condition(){
1245     log check_host_cpp_condition "$@"
1246     header=$1
1247     condition=$2
1248     shift 2
1249     check_host_cpp "$@" <<EOF
1250 #include <$header>
1251 #if !($condition)
1252 #error "unsatisfied condition: $condition"
1253 #endif
1254 EOF
1255 }
1256
1257 apply(){
1258     file=$1
1259     shift
1260     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1261 }
1262
1263 cp_if_changed(){
1264     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1265     mkdir -p "$(dirname $2)"
1266     $cp_f "$1" "$2"
1267 }
1268
1269 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1270 # system-dependent things.
1271
1272 COMPONENT_LIST="
1273     bsfs
1274     decoders
1275     demuxers
1276     encoders
1277     filters
1278     hwaccels
1279     indevs
1280     muxers
1281     outdevs
1282     parsers
1283     protocols
1284 "
1285
1286 EXAMPLE_LIST="
1287     avio_reading_example
1288     decoding_encoding_example
1289     demuxing_decoding_example
1290     filter_audio_example
1291     filtering_audio_example
1292     filtering_video_example
1293     metadata_example
1294     muxing_example
1295     remuxing_example
1296     resampling_audio_example
1297     scaling_video_example
1298     transcode_aac_example
1299     transcoding_example
1300 "
1301
1302 EXTERNAL_LIBRARY_LIST="
1303     avisynth
1304     bzlib
1305     crystalhd
1306     decklink
1307     frei0r
1308     gnutls
1309     iconv
1310     ladspa
1311     libaacplus
1312     libass
1313     libbluray
1314     libcaca
1315     libcdio
1316     libcelt
1317     libdc1394
1318     libfaac
1319     libfdk_aac
1320     libflite
1321     libfontconfig
1322     libfreetype
1323     libgme
1324     libgsm
1325     libiec61883
1326     libilbc
1327     libmodplug
1328     libmp3lame
1329     libnut
1330     libopencore_amrnb
1331     libopencore_amrwb
1332     libopencv
1333     libopenjpeg
1334     libopus
1335     libpulse
1336     libquvi
1337     librtmp
1338     libschroedinger
1339     libshine
1340     libsoxr
1341     libspeex
1342     libssh
1343     libstagefright_h264
1344     libtheora
1345     libtwolame
1346     libutvideo
1347     libv4l2
1348     libvidstab
1349     libvo_aacenc
1350     libvo_amrwbenc
1351     libvorbis
1352     libvpx
1353     libwavpack
1354     libwebp
1355     libx264
1356     libx265
1357     libxavs
1358     libxvid
1359     libzmq
1360     libzvbi
1361     openal
1362     opencl
1363     opengl
1364     openssl
1365     x11grab
1366     xlib
1367     zlib
1368 "
1369
1370 DOCUMENT_LIST="
1371     doc
1372     htmlpages
1373     manpages
1374     podpages
1375     txtpages
1376 "
1377
1378 FEATURE_LIST="
1379     ftrapv
1380     gray
1381     hardcoded_tables
1382     runtime_cpudetect
1383     safe_bitstream_reader
1384     shared
1385     small
1386     sram
1387     static
1388     swscale_alpha
1389 "
1390
1391 HWACCEL_LIST="
1392     dxva2
1393     vaapi
1394     vda
1395     vdpau
1396     xvmc
1397 "
1398
1399 LIBRARY_LIST="
1400     avcodec
1401     avdevice
1402     avfilter
1403     avformat
1404     avresample
1405     avutil
1406     postproc
1407     swresample
1408     swscale
1409 "
1410
1411 LICENSE_LIST="
1412     gpl
1413     nonfree
1414     version3
1415 "
1416
1417 PROGRAM_LIST="
1418     ffplay
1419     ffprobe
1420     ffserver
1421     ffmpeg
1422 "
1423
1424 SUBSYSTEM_LIST="
1425     dct
1426     dwt
1427     error_resilience
1428     fast_unaligned
1429     fft
1430     lsp
1431     lzo
1432     mdct
1433     network
1434     rdft
1435 "
1436
1437 CONFIG_LIST="
1438     $COMPONENT_LIST
1439     $DOCUMENT_LIST
1440     $EXAMPLE_LIST
1441     $EXTERNAL_LIBRARY_LIST
1442     $FEATURE_LIST
1443     $HWACCEL_LIST
1444     $LICENSE_LIST
1445     $LIBRARY_LIST
1446     $PROGRAM_LIST
1447     $SUBSYSTEM_LIST
1448     fontconfig
1449     incompatible_libav_abi
1450     memalign_hack
1451     memory_poisoning
1452     neon_clobber_test
1453     pic
1454     pod2man
1455     raise_major
1456     thumb
1457     xmm_clobber_test
1458 "
1459
1460 THREADS_LIST="
1461     pthreads
1462     os2threads
1463     w32threads
1464 "
1465
1466 ATOMICS_LIST="
1467     atomics_gcc
1468     atomics_suncc
1469     atomics_win32
1470 "
1471
1472 ARCH_LIST="
1473     aarch64
1474     alpha
1475     arm
1476     avr32
1477     avr32_ap
1478     avr32_uc
1479     bfin
1480     ia64
1481     m68k
1482     mips
1483     mips64
1484     parisc
1485     ppc
1486     ppc64
1487     s390
1488     sh4
1489     sparc
1490     sparc64
1491     tilegx
1492     tilepro
1493     tomi
1494     x86
1495     x86_32
1496     x86_64
1497 "
1498
1499 ARCH_EXT_LIST_ARM="
1500     armv5te
1501     armv6
1502     armv6t2
1503     armv8
1504     neon
1505     vfp
1506     vfpv3
1507 "
1508
1509 ARCH_EXT_LIST_MIPS="
1510     mipsfpu
1511     mips32r2
1512     mipsdspr1
1513     mipsdspr2
1514 "
1515
1516 ARCH_EXT_LIST_X86_SIMD="
1517     amd3dnow
1518     amd3dnowext
1519     avx
1520     avx2
1521     fma3
1522     fma4
1523     mmx
1524     mmxext
1525     sse
1526     sse2
1527     sse3
1528     sse4
1529     sse42
1530     ssse3
1531     xop
1532 "
1533
1534 ARCH_EXT_LIST_PPC="
1535     altivec
1536     dcbzl
1537     ldbrx
1538     ppc4xx
1539 "
1540
1541 ARCH_EXT_LIST_X86="
1542     $ARCH_EXT_LIST_X86_SIMD
1543     cpunop
1544     i686
1545 "
1546
1547 ARCH_EXT_LIST="
1548     $ARCH_EXT_LIST_ARM
1549     $ARCH_EXT_LIST_PPC
1550     $ARCH_EXT_LIST_X86
1551     $ARCH_EXT_LIST_MIPS
1552     loongson
1553 "
1554
1555 ARCH_FEATURES="
1556     aligned_stack
1557     fast_64bit
1558     fast_clz
1559     fast_cmov
1560     local_aligned_8
1561     local_aligned_16
1562     local_aligned_32
1563 "
1564
1565 BUILTIN_LIST="
1566     atomic_cas_ptr
1567     machine_rw_barrier
1568     MemoryBarrier
1569     mm_empty
1570     rdtsc
1571     sarestart
1572     sync_val_compare_and_swap
1573 "
1574 HAVE_LIST_CMDLINE="
1575     inline_asm
1576     symver
1577     yasm
1578 "
1579
1580 HAVE_LIST_PUB="
1581     bigendian
1582     fast_unaligned
1583     incompatible_libav_abi
1584 "
1585
1586 HEADERS_LIST="
1587     alsa_asoundlib_h
1588     altivec_h
1589     arpa_inet_h
1590     asm_types_h
1591     cdio_paranoia_h
1592     cdio_paranoia_paranoia_h
1593     CL_cl_h
1594     dev_bktr_ioctl_bt848_h
1595     dev_bktr_ioctl_meteor_h
1596     dev_ic_bt8xx_h
1597     dev_video_bktr_ioctl_bt848_h
1598     dev_video_meteor_ioctl_meteor_h
1599     direct_h
1600     dlfcn_h
1601     dxva_h
1602     ES2_gl_h
1603     gsm_h
1604     io_h
1605     mach_mach_time_h
1606     machine_ioctl_bt848_h
1607     machine_ioctl_meteor_h
1608     malloc_h
1609     openjpeg_1_5_openjpeg_h
1610     OpenGL_gl3_h
1611     poll_h
1612     sndio_h
1613     soundcard_h
1614     sys_mman_h
1615     sys_param_h
1616     sys_resource_h
1617     sys_select_h
1618     sys_soundcard_h
1619     sys_time_h
1620     sys_un_h
1621     sys_videoio_h
1622     termios_h
1623     unistd_h
1624     windows_h
1625     winsock2_h
1626 "
1627
1628 MATH_FUNCS="
1629     atanf
1630     atan2f
1631     cbrt
1632     cbrtf
1633     cosf
1634     exp2
1635     exp2f
1636     expf
1637     isinf
1638     isnan
1639     ldexpf
1640     llrint
1641     llrintf
1642     log2
1643     log2f
1644     log10f
1645     lrint
1646     lrintf
1647     powf
1648     rint
1649     round
1650     roundf
1651     sinf
1652     trunc
1653     truncf
1654 "
1655
1656 SYSTEM_FUNCS="
1657     access
1658     aligned_malloc
1659     clock_gettime
1660     closesocket
1661     CommandLineToArgvW
1662     CryptGenRandom
1663     dlopen
1664     fcntl
1665     flt_lim
1666     fork
1667     getaddrinfo
1668     gethrtime
1669     getopt
1670     GetProcessAffinityMask
1671     GetProcessMemoryInfo
1672     GetProcessTimes
1673     getrusage
1674     getservbyport
1675     GetSystemTimeAsFileTime
1676     gettimeofday
1677     glob
1678     glXGetProcAddress
1679     inet_aton
1680     isatty
1681     jack_port_get_latency_range
1682     kbhit
1683     localtime_r
1684     lzo1x_999_compress
1685     mach_absolute_time
1686     MapViewOfFile
1687     memalign
1688     mkstemp
1689     mmap
1690     mprotect
1691     nanosleep
1692     PeekNamedPipe
1693     posix_memalign
1694     pthread_cancel
1695     sched_getaffinity
1696     SetConsoleTextAttribute
1697     setmode
1698     setrlimit
1699     Sleep
1700     strerror_r
1701     sysconf
1702     sysctl
1703     usleep
1704     VirtualAlloc
1705     wglGetProcAddress
1706 "
1707
1708 TOOLCHAIN_FEATURES="
1709     asm_mod_q
1710     attribute_may_alias
1711     attribute_packed
1712     ebp_available
1713     ebx_available
1714     gnu_as
1715     gnu_windres
1716     ibm_asm
1717     inline_asm_labels
1718     inline_asm_nonlocal_labels
1719     inline_asm_direct_symbol_refs
1720     pragma_deprecated
1721     rsync_contimeout
1722     symver_asm_label
1723     symver_gnu_asm
1724     vfp_args
1725     xform_asm
1726     xmm_clobbers
1727 "
1728
1729 TYPES_LIST="
1730     socklen_t
1731     struct_addrinfo
1732     struct_group_source_req
1733     struct_ip_mreq_source
1734     struct_ipv6_mreq
1735     struct_pollfd
1736     struct_rusage_ru_maxrss
1737     struct_sctp_event_subscribe
1738     struct_sockaddr_in6
1739     struct_sockaddr_sa_len
1740     struct_sockaddr_storage
1741     struct_stat_st_mtim_tv_nsec
1742     struct_v4l2_frmivalenum_discrete
1743 "
1744
1745 HAVE_LIST="
1746     $ARCH_EXT_LIST
1747     $(add_suffix _external $ARCH_EXT_LIST)
1748     $(add_suffix _inline   $ARCH_EXT_LIST)
1749     $ARCH_FEATURES
1750     $ATOMICS_LIST
1751     $BUILTIN_LIST
1752     $HAVE_LIST_CMDLINE
1753     $HAVE_LIST_PUB
1754     $HEADERS_LIST
1755     $MATH_FUNCS
1756     $SYSTEM_FUNCS
1757     $THREADS_LIST
1758     $TOOLCHAIN_FEATURES
1759     $TYPES_LIST
1760     atomics_native
1761     dos_paths
1762     libc_msvcrt
1763     libdc1394_1
1764     libdc1394_2
1765     makeinfo
1766     perl
1767     pod2man
1768     sdl
1769     texi2html
1770     threads
1771     vdpau_x11
1772     xlib
1773 "
1774
1775 # options emitted with CONFIG_ prefix but not available on the command line
1776 CONFIG_EXTRA="
1777     aandcttables
1778     ac3dsp
1779     audio_frame_queue
1780     cabac
1781     dsputil
1782     exif
1783     frame_thread_encoder
1784     gcrypt
1785     golomb
1786     gplv3
1787     h263dsp
1788     h264chroma
1789     h264dsp
1790     h264pred
1791     h264qpel
1792     hpeldsp
1793     huffman
1794     intrax8
1795     lgplv3
1796     llviddsp
1797     lpc
1798     mpegaudio
1799     mpegaudiodsp
1800     mpegvideo
1801     mpegvideoenc
1802     nettle
1803     rangecoder
1804     riffdec
1805     riffenc
1806     rtpdec
1807     rtpenc_chain
1808     sinewin
1809     tpeldsp
1810     videodsp
1811     vp3dsp
1812 "
1813
1814 CMDLINE_SELECT="
1815     $ARCH_EXT_LIST
1816     $CONFIG_LIST
1817     $HAVE_LIST_CMDLINE
1818     $THREADS_LIST
1819     asm
1820     cross_compile
1821     debug
1822     extra_warnings
1823     logging
1824     lto
1825     optimizations
1826     rpath
1827     stripping
1828 "
1829
1830 PATHS_LIST="
1831     bindir
1832     datadir
1833     docdir
1834     incdir
1835     libdir
1836     mandir
1837     prefix
1838     shlibdir
1839 "
1840
1841 CMDLINE_SET="
1842     $PATHS_LIST
1843     ar
1844     arch
1845     as
1846     assert_level
1847     build_suffix
1848     cc
1849     cpu
1850     cross_prefix
1851     cxx
1852     dep_cc
1853     extra_version
1854     gas
1855     host_cc
1856     host_cflags
1857     host_ld
1858     host_ldflags
1859     host_libs
1860     host_os
1861     install
1862     ld
1863     logfile
1864     malloc_prefix
1865     nm
1866     optflags
1867     pkg_config
1868     pkg_config_flags
1869     progs_suffix
1870     random_seed
1871     ranlib
1872     samples
1873     strip
1874     sysinclude
1875     sysroot
1876     target_exec
1877     target_os
1878     target_path
1879     target_samples
1880     tempprefix
1881     toolchain
1882     valgrind
1883     yasmexe
1884 "
1885
1886 CMDLINE_APPEND="
1887     extra_cflags
1888     extra_cxxflags
1889     host_cppflags
1890 "
1891
1892 # code dependency declarations
1893
1894 # architecture extensions
1895
1896 armv5te_deps="arm"
1897 armv6_deps="arm"
1898 armv6t2_deps="arm"
1899 armv8_deps="aarch64"
1900 neon_deps_any="aarch64 arm"
1901 vfp_deps_any="aarch64 arm"
1902 vfpv3_deps="vfp"
1903
1904 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1905
1906 mipsfpu_deps="mips"
1907 mips32r2_deps="mips"
1908 mipsdspr1_deps="mips"
1909 mipsdspr2_deps="mips"
1910
1911 altivec_deps="ppc"
1912 ppc4xx_deps="ppc"
1913
1914 cpunop_deps="i686"
1915 x86_64_select="i686"
1916 x86_64_suggest="fast_cmov"
1917
1918 amd3dnow_deps="mmx"
1919 amd3dnowext_deps="amd3dnow"
1920 i686_deps="x86"
1921 mmx_deps="x86"
1922 mmxext_deps="mmx"
1923 sse_deps="mmxext"
1924 sse2_deps="sse"
1925 sse3_deps="sse2"
1926 ssse3_deps="sse3"
1927 sse4_deps="ssse3"
1928 sse42_deps="sse4"
1929 avx_deps="sse42"
1930 xop_deps="avx"
1931 fma3_deps="avx"
1932 fma4_deps="avx"
1933 avx2_deps="avx"
1934
1935 mmx_external_deps="yasm"
1936 mmx_inline_deps="inline_asm"
1937 mmx_suggest="mmx_external mmx_inline"
1938
1939 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1940     eval dep=\$${ext}_deps
1941     eval ${ext}_external_deps='"${dep}_external"'
1942     eval ${ext}_inline_deps='"${dep}_inline"'
1943     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1944 done
1945
1946 aligned_stack_if_any="aarch64 ppc x86"
1947 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1948 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1949 fast_unaligned_if_any="aarch64 ppc x86"
1950
1951 need_memalign="altivec neon sse"
1952
1953 # system capabilities
1954 log2_deps="!libc_msvcrt"
1955
1956 symver_if_any="symver_asm_label symver_gnu_asm"
1957
1958 # threading support
1959 atomics_gcc_if="sync_val_compare_and_swap"
1960 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1961 atomics_win32_if="MemoryBarrier"
1962 atomics_native_if_any="$ATOMICS_LIST"
1963 w32threads_deps="atomics_native"
1964 threads_if_any="$THREADS_LIST"
1965
1966 # subsystems
1967 dct_select="rdft"
1968 error_resilience_select="dsputil"
1969 frame_thread_encoder_deps="encoders threads"
1970 mdct_select="fft"
1971 rdft_select="fft"
1972 mpegaudio_select="mpegaudiodsp"
1973 mpegaudiodsp_select="dct"
1974 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1975 mpegvideoenc_select="dsputil mpegvideo"
1976
1977 # decoders / encoders
1978 aac_decoder_select="mdct sinewin"
1979 aac_encoder_select="audio_frame_queue mdct sinewin"
1980 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1981 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1982 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
1983 ac3_encoder_select="mdct ac3dsp dsputil"
1984 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1985 aic_decoder_select="dsputil golomb"
1986 alac_encoder_select="lpc"
1987 als_decoder_select="dsputil"
1988 amrnb_decoder_select="lsp"
1989 amrwb_decoder_select="lsp"
1990 amv_decoder_select="sp5x_decoder exif"
1991 amv_encoder_select="aandcttables"
1992 ape_decoder_select="dsputil"
1993 asv1_decoder_select="dsputil"
1994 asv1_encoder_select="dsputil"
1995 asv2_decoder_select="dsputil"
1996 asv2_encoder_select="dsputil"
1997 atrac1_decoder_select="mdct sinewin"
1998 atrac3_decoder_select="mdct"
1999 atrac3p_decoder_select="mdct sinewin"
2000 avrn_decoder_select="exif"
2001 bink_decoder_select="dsputil hpeldsp"
2002 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2003 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2004 cavs_decoder_select="dsputil golomb h264chroma videodsp"
2005 cllc_decoder_select="dsputil"
2006 comfortnoise_encoder_select="lpc"
2007 cook_decoder_select="dsputil mdct sinewin"
2008 cscd_decoder_select="lzo"
2009 cscd_decoder_suggest="zlib"
2010 dca_decoder_select="mdct"
2011 dirac_decoder_select="dsputil dwt golomb videodsp"
2012 dnxhd_decoder_select="dsputil"
2013 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2014 dvvideo_decoder_select="dsputil"
2015 dvvideo_encoder_select="dsputil"
2016 dxa_decoder_select="zlib"
2017 eac3_decoder_select="ac3_decoder"
2018 eac3_encoder_select="ac3_encoder"
2019 eamad_decoder_select="aandcttables dsputil mpegvideo"
2020 eatgq_decoder_select="aandcttables"
2021 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2022 exr_decoder_select="zlib"
2023 ffv1_decoder_select="golomb rangecoder"
2024 ffv1_encoder_select="rangecoder"
2025 ffvhuff_decoder_select="huffyuv_decoder"
2026 ffvhuff_encoder_select="huffyuv_encoder"
2027 fic_decoder_select="golomb"
2028 flac_decoder_select="golomb"
2029 flac_encoder_select="dsputil golomb lpc"
2030 flashsv_decoder_select="zlib"
2031 flashsv_encoder_select="zlib"
2032 flashsv2_encoder_select="zlib"
2033 flashsv2_decoder_select="zlib"
2034 flv_decoder_select="h263_decoder"
2035 flv_encoder_select="h263_encoder"
2036 fourxm_decoder_select="dsputil"
2037 fraps_decoder_select="dsputil huffman"
2038 g2m_decoder_select="dsputil zlib"
2039 g729_decoder_select="dsputil"
2040 h261_decoder_select="error_resilience mpegvideo"
2041 h261_encoder_select="aandcttables mpegvideoenc"
2042 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2043 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2044 h263i_decoder_select="h263_decoder"
2045 h263p_encoder_select="h263_encoder"
2046 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2047 h264_decoder_suggest="error_resilience"
2048 hevc_decoder_select="cabac dsputil golomb videodsp"
2049 huffyuv_decoder_select="dsputil llviddsp"
2050 huffyuv_encoder_select="dsputil huffman llviddsp"
2051 iac_decoder_select="imc_decoder"
2052 imc_decoder_select="dsputil fft mdct sinewin"
2053 indeo3_decoder_select="hpeldsp"
2054 interplay_video_decoder_select="hpeldsp"
2055 jpegls_decoder_select="golomb mjpeg_decoder"
2056 jpegls_encoder_select="golomb"
2057 jv_decoder_select="dsputil"
2058 lagarith_decoder_select="dsputil"
2059 ljpeg_encoder_select="aandcttables mpegvideoenc"
2060 loco_decoder_select="golomb"
2061 mdec_decoder_select="dsputil error_resilience mpegvideo"
2062 metasound_decoder_select="lsp mdct sinewin"
2063 mimic_decoder_select="dsputil hpeldsp"
2064 mjpeg_decoder_select="dsputil hpeldsp exif"
2065 mjpeg_encoder_select="aandcttables mpegvideoenc"
2066 mjpegb_decoder_select="mjpeg_decoder"
2067 mlp_decoder_select="mlp_parser"
2068 motionpixels_decoder_select="dsputil"
2069 mp1_decoder_select="mpegaudio"
2070 mp1float_decoder_select="mpegaudio"
2071 mp2_decoder_select="mpegaudio"
2072 mp2float_decoder_select="mpegaudio"
2073 mp3_decoder_select="mpegaudio"
2074 mp3adu_decoder_select="mpegaudio"
2075 mp3adufloat_decoder_select="mpegaudio"
2076 mp3float_decoder_select="mpegaudio"
2077 mp3on4_decoder_select="mpegaudio"
2078 mp3on4float_decoder_select="mpegaudio"
2079 mpc7_decoder_select="dsputil mpegaudiodsp"
2080 mpc8_decoder_select="mpegaudiodsp"
2081 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2082 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2083 mpeg1video_decoder_select="error_resilience mpegvideo"
2084 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2085 mpeg2video_decoder_select="error_resilience mpegvideo"
2086 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2087 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2088 mpeg4_encoder_select="h263_encoder"
2089 msmpeg4v1_decoder_select="h263_decoder"
2090 msmpeg4v2_decoder_select="h263_decoder"
2091 msmpeg4v2_encoder_select="h263_encoder"
2092 msmpeg4v3_decoder_select="h263_decoder"
2093 msmpeg4v3_encoder_select="h263_encoder"
2094 mss2_decoder_select="error_resilience vc1_decoder"
2095 mxpeg_decoder_select="mjpeg_decoder"
2096 nellymoser_decoder_select="mdct sinewin"
2097 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2098 nuv_decoder_select="dsputil lzo"
2099 on2avc_decoder_select="mdct"
2100 png_decoder_select="zlib"
2101 png_encoder_select="dsputil zlib"
2102 prores_decoder_select="dsputil"
2103 prores_encoder_select="dsputil"
2104 qcelp_decoder_select="lsp"
2105 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2106 ra_144_encoder_select="audio_frame_queue lpc"
2107 ralf_decoder_select="golomb"
2108 rawvideo_decoder_select="dsputil"
2109 rtjpeg_decoder_select="dsputil"
2110 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2111 rv10_encoder_select="h263_encoder"
2112 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2113 rv20_encoder_select="h263_encoder"
2114 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2115 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2116 shorten_decoder_select="golomb"
2117 sipr_decoder_select="lsp"
2118 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2119 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2120 sonic_decoder_select="golomb rangecoder"
2121 sonic_encoder_select="golomb rangecoder"
2122 sonic_ls_encoder_select="golomb"
2123 sp5x_decoder_select="mjpeg_decoder"
2124 svq1_decoder_select="hpeldsp"
2125 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2126 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2127 svq3_decoder_suggest="zlib"
2128 tak_decoder_select="dsputil"
2129 theora_decoder_select="vp3_decoder"
2130 thp_decoder_select="mjpeg_decoder"
2131 tiff_decoder_suggest="zlib"
2132 tiff_encoder_suggest="zlib"
2133 truehd_decoder_select="mlp_parser"
2134 truemotion2_decoder_select="dsputil"
2135 truespeech_decoder_select="dsputil"
2136 tscc_decoder_select="zlib"
2137 twinvq_decoder_select="mdct lsp sinewin"
2138 utvideo_decoder_select="dsputil"
2139 utvideo_encoder_select="dsputil huffman"
2140 vble_decoder_select="dsputil"
2141 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2142 vc1image_decoder_select="vc1_decoder"
2143 vorbis_decoder_select="mdct"
2144 vorbis_encoder_select="mdct"
2145 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2146 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2147 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2148 vp6a_decoder_select="vp6_decoder"
2149 vp6f_decoder_select="vp6_decoder"
2150 vp7_decoder_select="h264pred videodsp"
2151 vp8_decoder_select="h264pred videodsp"
2152 vp9_decoder_select="videodsp"
2153 webp_decoder_select="vp8_decoder"
2154 wmapro_decoder_select="mdct sinewin"
2155 wmav1_decoder_select="mdct sinewin"
2156 wmav1_encoder_select="mdct sinewin"
2157 wmav2_decoder_select="mdct sinewin"
2158 wmav2_encoder_select="mdct sinewin"
2159 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2160 wmv1_decoder_select="h263_decoder"
2161 wmv1_encoder_select="h263_encoder"
2162 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2163 wmv2_encoder_select="h263_encoder"
2164 wmv3_decoder_select="vc1_decoder"
2165 wmv3image_decoder_select="wmv3_decoder"
2166 zerocodec_decoder_select="zlib"
2167 zlib_decoder_select="zlib"
2168 zlib_encoder_select="zlib"
2169 zmbv_decoder_select="zlib"
2170 zmbv_encoder_select="zlib"
2171
2172 # hardware accelerators
2173 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2174 dxva2_deps="dxva2api_h"
2175 vaapi_deps="va_va_h"
2176 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2177 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2178 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2179 xvmc_deps="X11_extensions_XvMClib_h"
2180
2181 h263_vaapi_hwaccel_deps="vaapi"
2182 h263_vaapi_hwaccel_select="h263_decoder"
2183 h263_vdpau_hwaccel_deps="vdpau"
2184 h263_vdpau_hwaccel_select="h263_decoder"
2185 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2186 h264_dxva2_hwaccel_deps="dxva2"
2187 h264_dxva2_hwaccel_select="h264_decoder"
2188 h264_vaapi_hwaccel_deps="vaapi"
2189 h264_vaapi_hwaccel_select="h264_decoder"
2190 h264_vda_decoder_deps="vda"
2191 h264_vda_decoder_select="h264_decoder"
2192 h264_vda_hwaccel_deps="vda"
2193 h264_vda_hwaccel_select="h264_decoder"
2194 h264_vdpau_decoder_deps="vdpau"
2195 h264_vdpau_decoder_select="h264_decoder"
2196 h264_vdpau_hwaccel_deps="vdpau"
2197 h264_vdpau_hwaccel_select="h264_decoder"
2198 mpeg_vdpau_decoder_deps="vdpau"
2199 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2200 mpeg_xvmc_hwaccel_deps="xvmc"
2201 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2202 mpeg1_vdpau_decoder_deps="vdpau"
2203 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2204 mpeg1_vdpau_hwaccel_deps="vdpau"
2205 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2206 mpeg1_xvmc_hwaccel_deps="xvmc"
2207 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2208 mpeg2_crystalhd_decoder_select="crystalhd"
2209 mpeg2_dxva2_hwaccel_deps="dxva2"
2210 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2211 mpeg2_vaapi_hwaccel_deps="vaapi"
2212 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2213 mpeg2_vdpau_hwaccel_deps="vdpau"
2214 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2215 mpeg2_xvmc_hwaccel_deps="xvmc"
2216 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2217 mpeg4_crystalhd_decoder_select="crystalhd"
2218 mpeg4_vaapi_hwaccel_deps="vaapi"
2219 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2220 mpeg4_vdpau_decoder_deps="vdpau"
2221 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2222 mpeg4_vdpau_hwaccel_deps="vdpau"
2223 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2224 msmpeg4_crystalhd_decoder_select="crystalhd"
2225 vc1_crystalhd_decoder_select="crystalhd"
2226 vc1_dxva2_hwaccel_deps="dxva2"
2227 vc1_dxva2_hwaccel_select="vc1_decoder"
2228 vc1_vaapi_hwaccel_deps="vaapi"
2229 vc1_vaapi_hwaccel_select="vc1_decoder"
2230 vc1_vdpau_decoder_deps="vdpau"
2231 vc1_vdpau_decoder_select="vc1_decoder"
2232 vc1_vdpau_hwaccel_deps="vdpau"
2233 vc1_vdpau_hwaccel_select="vc1_decoder"
2234 wmv3_crystalhd_decoder_select="crystalhd"
2235 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2236 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2237 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2238 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2239
2240 # parsers
2241 h264_parser_select="h264_decoder"
2242 hevc_parser_select="hevc_decoder"
2243 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2244 mpegvideo_parser_select="error_resilience mpegvideo"
2245 vc1_parser_select="mpegvideo"
2246
2247 # external libraries
2248 libaacplus_encoder_deps="libaacplus"
2249 libcelt_decoder_deps="libcelt"
2250 libfaac_encoder_deps="libfaac"
2251 libfaac_encoder_select="audio_frame_queue"
2252 libfdk_aac_decoder_deps="libfdk_aac"
2253 libfdk_aac_encoder_deps="libfdk_aac"
2254 libfdk_aac_encoder_select="audio_frame_queue"
2255 libgme_demuxer_deps="libgme"
2256 libgsm_decoder_deps="libgsm"
2257 libgsm_encoder_deps="libgsm"
2258 libgsm_ms_decoder_deps="libgsm"
2259 libgsm_ms_encoder_deps="libgsm"
2260 libilbc_decoder_deps="libilbc"
2261 libilbc_encoder_deps="libilbc"
2262 libmodplug_demuxer_deps="libmodplug"
2263 libmp3lame_encoder_deps="libmp3lame"
2264 libmp3lame_encoder_select="audio_frame_queue"
2265 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2266 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2267 libopencore_amrnb_encoder_select="audio_frame_queue"
2268 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2269 libopenjpeg_decoder_deps="libopenjpeg"
2270 libopenjpeg_encoder_deps="libopenjpeg"
2271 libopus_decoder_deps="libopus"
2272 libopus_encoder_deps="libopus"
2273 libopus_encoder_select="audio_frame_queue"
2274 libquvi_demuxer_deps="libquvi"
2275 libschroedinger_decoder_deps="libschroedinger"
2276 libschroedinger_encoder_deps="libschroedinger"
2277 libshine_encoder_deps="libshine"
2278 libshine_encoder_select="audio_frame_queue"
2279 libspeex_decoder_deps="libspeex"
2280 libspeex_encoder_deps="libspeex"
2281 libspeex_encoder_select="audio_frame_queue"
2282 libstagefright_h264_decoder_deps="libstagefright_h264"
2283 libtheora_encoder_deps="libtheora"
2284 libtwolame_encoder_deps="libtwolame"
2285 libvo_aacenc_encoder_deps="libvo_aacenc"
2286 libvo_aacenc_encoder_select="audio_frame_queue"
2287 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2288 libvorbis_decoder_deps="libvorbis"
2289 libvorbis_encoder_deps="libvorbis"
2290 libvorbis_encoder_select="audio_frame_queue"
2291 libvpx_vp8_decoder_deps="libvpx"
2292 libvpx_vp8_encoder_deps="libvpx"
2293 libvpx_vp9_decoder_deps="libvpx"
2294 libvpx_vp9_encoder_deps="libvpx"
2295 libwavpack_encoder_deps="libwavpack"
2296 libwebp_encoder_deps="libwebp"
2297 libx264_encoder_deps="libx264"
2298 libx264rgb_encoder_deps="libx264"
2299 libx265_encoder_deps="libx265"
2300 libxavs_encoder_deps="libxavs"
2301 libxvid_encoder_deps="libxvid"
2302 libutvideo_decoder_deps="libutvideo"
2303 libutvideo_encoder_deps="libutvideo"
2304 libzvbi_teletext_decoder_deps="libzvbi"
2305
2306 # demuxers / muxers
2307 ac3_demuxer_select="ac3_parser"
2308 asf_demuxer_select="riffdec"
2309 asf_muxer_select="riffenc"
2310 asf_stream_muxer_select="asf_muxer"
2311 avi_demuxer_select="riffdec exif"
2312 avi_muxer_select="riffenc"
2313 avisynth_demuxer_deps="avisynth"
2314 avisynth_demuxer_select="riffdec"
2315 caf_demuxer_select="riffdec"
2316 dirac_demuxer_select="dirac_parser"
2317 dts_demuxer_select="dca_parser"
2318 dtshd_demuxer_select="dca_parser"
2319 dxa_demuxer_select="riffdec"
2320 eac3_demuxer_select="ac3_parser"
2321 f4v_muxer_select="mov_muxer"
2322 flac_demuxer_select="flac_parser"
2323 hds_muxer_select="flv_muxer"
2324 hls_muxer_select="mpegts_muxer"
2325 image2_alias_pix_demuxer_select="image2_demuxer"
2326 image2_brender_pix_demuxer_select="image2_demuxer"
2327 ipod_muxer_select="mov_muxer"
2328 ismv_muxer_select="mov_muxer"
2329 libnut_demuxer_deps="libnut"
2330 libnut_muxer_deps="libnut"
2331 matroska_audio_muxer_select="matroska_muxer"
2332 matroska_demuxer_select="riffdec"
2333 matroska_demuxer_suggest="bzlib lzo zlib"
2334 matroska_muxer_select="riffenc"
2335 mmf_muxer_select="riffenc"
2336 mov_demuxer_select="riffdec"
2337 mov_demuxer_suggest="zlib"
2338 mov_muxer_select="riffenc rtpenc_chain"
2339 mp3_demuxer_select="mpegaudio_parser"
2340 mp4_muxer_select="mov_muxer"
2341 mpegts_muxer_select="adts_muxer latm_muxer"
2342 mpegtsraw_demuxer_select="mpegts_demuxer"
2343 mxf_d10_muxer_select="mxf_muxer"
2344 nut_muxer_select="riffenc"
2345 nuv_demuxer_select="riffdec"
2346 ogg_demuxer_select="golomb"
2347 psp_muxer_select="mov_muxer"
2348 rtp_demuxer_select="sdp_demuxer"
2349 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2350 rtsp_demuxer_select="http_protocol rtpdec"
2351 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2352 sap_demuxer_select="sdp_demuxer"
2353 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2354 sdp_demuxer_select="rtpdec"
2355 smoothstreaming_muxer_select="ismv_muxer"
2356 spdif_muxer_select="aac_parser"
2357 tak_demuxer_select="tak_parser"
2358 tg2_muxer_select="mov_muxer"
2359 tgp_muxer_select="mov_muxer"
2360 vobsub_demuxer_select="mpegps_demuxer"
2361 w64_demuxer_select="wav_demuxer"
2362 w64_muxer_select="wav_muxer"
2363 wav_demuxer_select="riffdec"
2364 wav_muxer_select="riffenc"
2365 webm_muxer_select="riffenc"
2366 wtv_demuxer_select="riffdec"
2367 wtv_muxer_select="riffenc"
2368 xmv_demuxer_select="riffdec"
2369 xwma_demuxer_select="riffdec"
2370
2371 # indevs / outdevs
2372 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2373 alsa_outdev_deps="alsa_asoundlib_h"
2374 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2375 avfoundation_indev_select="avfoundation"
2376 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2377 caca_outdev_deps="libcaca"
2378 decklink_outdev_deps="decklink pthreads"
2379 decklink_outdev_extralibs="-lstdc++"
2380 dshow_indev_deps="IBaseFilter"
2381 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2382 dv1394_indev_deps="dv1394"
2383 dv1394_indev_select="dv_demuxer"
2384 fbdev_indev_deps="linux_fb_h"
2385 fbdev_outdev_deps="linux_fb_h"
2386 gdigrab_indev_deps="CreateDIBSection"
2387 gdigrab_indev_extralibs="-lgdi32"
2388 gdigrab_indev_select="bmp_decoder"
2389 iec61883_indev_deps="libiec61883"
2390 jack_indev_deps="jack_jack_h sem_timedwait"
2391 lavfi_indev_deps="avfilter"
2392 libcdio_indev_deps="libcdio"
2393 libdc1394_indev_deps="libdc1394"
2394 libv4l2_indev_deps="libv4l2"
2395 openal_indev_deps="openal"
2396 opengl_outdev_deps="opengl"
2397 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2398 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2399 pulse_indev_deps="libpulse"
2400 pulse_outdev_deps="libpulse"
2401 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2402 qtkit_indev_select="qtkit"
2403 sdl_outdev_deps="sdl"
2404 sndio_indev_deps="sndio_h"
2405 sndio_outdev_deps="sndio_h"
2406 v4l_indev_deps="linux_videodev_h"
2407 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2408 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2409 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2410 vfwcap_indev_extralibs="-lavicap32"
2411 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2412 xv_outdev_extralibs="-lXv -lX11 -lXext"
2413 x11grab_indev_deps="x11grab"
2414
2415 # protocols
2416 bluray_protocol_deps="libbluray"
2417 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2418 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2419 ffrtmpcrypt_protocol_select="tcp_protocol"
2420 ffrtmphttp_protocol_deps="!librtmp_protocol"
2421 ffrtmphttp_protocol_select="http_protocol"
2422 ftp_protocol_select="tcp_protocol"
2423 gopher_protocol_select="network"
2424 http_protocol_select="tcp_protocol"
2425 httpproxy_protocol_select="tcp_protocol"
2426 https_protocol_select="tls_protocol"
2427 librtmp_protocol_deps="librtmp"
2428 librtmpe_protocol_deps="librtmp"
2429 librtmps_protocol_deps="librtmp"
2430 librtmpt_protocol_deps="librtmp"
2431 librtmpte_protocol_deps="librtmp"
2432 libssh_protocol_deps="libssh"
2433 mmsh_protocol_select="http_protocol"
2434 mmst_protocol_select="network"
2435 rtmp_protocol_deps="!librtmp_protocol"
2436 rtmp_protocol_select="tcp_protocol"
2437 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2438 rtmps_protocol_deps="!librtmp_protocol"
2439 rtmps_protocol_select="tls_protocol"
2440 rtmpt_protocol_select="ffrtmphttp_protocol"
2441 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2442 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2443 rtp_protocol_select="udp_protocol"
2444 sctp_protocol_deps="struct_sctp_event_subscribe"
2445 sctp_protocol_select="network"
2446 srtp_protocol_select="rtp_protocol"
2447 tcp_protocol_select="network"
2448 tls_protocol_deps_any="openssl gnutls"
2449 tls_protocol_select="tcp_protocol"
2450 udp_protocol_select="network"
2451 unix_protocol_deps="sys_un_h"
2452 unix_protocol_select="network"
2453
2454 # filters
2455 aconvert_filter_deps="swresample"
2456 amovie_filter_deps="avcodec avformat"
2457 aresample_filter_deps="swresample"
2458 ass_filter_deps="libass"
2459 asyncts_filter_deps="avresample"
2460 atempo_filter_deps="avcodec"
2461 atempo_filter_select="rdft"
2462 azmq_filter_deps="libzmq"
2463 blackframe_filter_deps="gpl"
2464 boxblur_filter_deps="gpl"
2465 colormatrix_filter_deps="gpl"
2466 cropdetect_filter_deps="gpl"
2467 dctdnoiz_filter_deps="avcodec"
2468 dctdnoiz_filter_select="dct"
2469 delogo_filter_deps="gpl"
2470 deshake_filter_deps="avcodec"
2471 deshake_filter_select="dsputil"
2472 drawtext_filter_deps="libfreetype"
2473 ebur128_filter_deps="gpl"
2474 flite_filter_deps="libflite"
2475 frei0r_filter_deps="frei0r dlopen"
2476 frei0r_filter_extralibs='$ldl'
2477 frei0r_src_filter_deps="frei0r dlopen"
2478 frei0r_src_filter_extralibs='$ldl'
2479 geq_filter_deps="gpl"
2480 histeq_filter_deps="gpl"
2481 hqdn3d_filter_deps="gpl"
2482 interlace_filter_deps="gpl"
2483 kerndeint_filter_deps="gpl"
2484 ladspa_filter_deps="ladspa dlopen"
2485 mcdeint_filter_deps="avcodec gpl"
2486 movie_filter_deps="avcodec avformat"
2487 mp_filter_deps="gpl avcodec swscale inline_asm"
2488 mpdecimate_filter_deps="gpl avcodec"
2489 mptestsrc_filter_deps="gpl"
2490 negate_filter_deps="lut_filter"
2491 perspective_filter_deps="gpl"
2492 ocv_filter_deps="libopencv"
2493 owdenoise_filter_deps="gpl"
2494 pan_filter_deps="swresample"
2495 phase_filter_deps="gpl"
2496 pp_filter_deps="gpl postproc"
2497 pullup_filter_deps="gpl"
2498 removelogo_filter_deps="avcodec avformat swscale"
2499 resample_filter_deps="avresample"
2500 sab_filter_deps="gpl swscale"
2501 scale_filter_deps="swscale"
2502 smartblur_filter_deps="gpl swscale"
2503 showspectrum_filter_deps="avcodec"
2504 showspectrum_filter_select="rdft"
2505 spp_filter_deps="gpl avcodec"
2506 spp_filter_select="fft"
2507 stereo3d_filter_deps="gpl"
2508 subtitles_filter_deps="avformat avcodec libass"
2509 super2xsai_filter_deps="gpl"
2510 tinterlace_filter_deps="gpl"
2511 vidstabdetect_filter_deps="libvidstab"
2512 vidstabtransform_filter_deps="libvidstab"
2513 pixfmts_super2xsai_test_deps="super2xsai_filter"
2514 tinterlace_merge_test_deps="tinterlace_filter"
2515 tinterlace_pad_test_deps="tinterlace_filter"
2516 zmq_filter_deps="libzmq"
2517
2518 # examples
2519 avio_reading="avformat avcodec avutil"
2520 avcodec_example_deps="avcodec avutil"
2521 demuxing_decoding_example_deps="avcodec avformat avutil"
2522 filter_audio_example_deps="avfilter avutil"
2523 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2524 filtering_video_example_deps="avfilter avcodec avformat avutil"
2525 metadata_example_deps="avformat avutil"
2526 muxing_example_deps="avcodec avformat avutil swscale"
2527 remuxing_example_deps="avcodec avformat avutil"
2528 resampling_audio_example_deps="avutil swresample"
2529 scaling_video_example_deps="avutil swscale"
2530 transcode_aac_example_deps="avcodec avformat swresample"
2531 transcoding_example_deps="avfilter avcodec avformat avutil"
2532
2533 # libraries
2534 avcodec_deps="avutil"
2535 avdevice_deps="avutil avcodec avformat"
2536 avfilter_deps="avutil"
2537 avformat_deps="avutil avcodec"
2538 avresample_deps="avutil"
2539 postproc_deps="avutil gpl"
2540 swscale_deps="avutil"
2541
2542 # programs
2543 ffmpeg_deps="avcodec avfilter avformat swresample"
2544 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2545                null_filter
2546                setpts_filter trim_filter"
2547 ffplay_deps="avcodec avformat swscale swresample sdl"
2548 ffplay_libs='$sdl_libs'
2549 ffplay_select="rdft crop_filter"
2550 ffprobe_deps="avcodec avformat"
2551 ffserver_deps="avformat fork sarestart"
2552 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2553
2554 # documentation
2555 podpages_deps="perl"
2556 manpages_deps="perl pod2man"
2557 htmlpages_deps="perl texi2html"
2558 txtpages_deps="perl makeinfo"
2559 doc_deps_any="manpages htmlpages podpages txtpages"
2560
2561 # default parameters
2562
2563 logfile="config.log"
2564
2565 # installation paths
2566 prefix_default="/usr/local"
2567 bindir_default='${prefix}/bin'
2568 datadir_default='${prefix}/share/ffmpeg'
2569 docdir_default='${prefix}/share/doc/ffmpeg'
2570 incdir_default='${prefix}/include'
2571 libdir_default='${prefix}/lib'
2572 mandir_default='${prefix}/share/man'
2573 shlibdir_default="$libdir_default"
2574
2575 # toolchain
2576 ar_default="ar"
2577 cc_default="gcc"
2578 cxx_default="g++"
2579 host_cc_default="gcc"
2580 cp_f="cp -f"
2581 install="install"
2582 ln_s="ln -s -f"
2583 nm_default="nm -g"
2584 objformat="elf"
2585 pkg_config_default=pkg-config
2586 ranlib_default="ranlib"
2587 strip_default="strip"
2588 yasmexe_default="yasm"
2589 windres_default="windres"
2590
2591 nogas=":"
2592
2593 # OS
2594 target_os_default=$(tolower $(uname -s))
2595 host_os=$target_os_default
2596
2597 # machine
2598 if test "$target_os_default" = aix; then
2599     arch_default=$(uname -p)
2600 else
2601     arch_default=$(uname -m)
2602 fi
2603 cpu="generic"
2604
2605 # configurable options
2606 enable $PROGRAM_LIST
2607 enable $DOCUMENT_LIST
2608 enable $EXAMPLE_LIST
2609 enable $(filter_out avresample $LIBRARY_LIST)
2610 enable stripping
2611
2612 enable asm
2613 enable debug
2614 enable doc
2615 enable optimizations
2616 enable runtime_cpudetect
2617 enable safe_bitstream_reader
2618 enable static
2619 enable swscale_alpha
2620
2621 # Enable hwaccels by default.
2622 enable dxva2 vaapi vda vdpau xvmc
2623 enable xlib
2624
2625 # build settings
2626 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2627 LIBPREF="lib"
2628 LIBSUF=".a"
2629 FULLNAME='$(NAME)$(BUILDSUF)'
2630 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2631 SLIBPREF="lib"
2632 SLIBSUF=".so"
2633 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2634 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2635 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2636 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2637 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2638 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2639
2640 asflags_filter=echo
2641 cflags_filter=echo
2642 ldflags_filter=echo
2643
2644 AS_C='-c'
2645 AS_O='-o $@'
2646 CC_C='-c'
2647 CC_E='-E -o $@'
2648 CC_O='-o $@'
2649 CXX_C='-c'
2650 CXX_O='-o $@'
2651 LD_O='-o $@'
2652 LD_LIB='-l%'
2653 LD_PATH='-L'
2654 HOSTCC_C='-c'
2655 HOSTCC_E='-E -o $@'
2656 HOSTCC_O='-o $@'
2657 HOSTLD_O='-o $@'
2658
2659 host_libs='-lm'
2660 host_cflags_filter=echo
2661 host_ldflags_filter=echo
2662
2663 target_path='$(CURDIR)'
2664
2665 # since the object filename is not given with the -MM flag, the compiler
2666 # is only able to print the basename, and we must add the path ourselves
2667 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2668 DEPFLAGS='-MM'
2669
2670 # find source path
2671 if test -f configure; then
2672     source_path=.
2673 else
2674     source_path=$(cd $(dirname "$0"); pwd)
2675     echo "$source_path" | grep -q '[[:blank:]]' &&
2676         die "Out of tree builds are impossible with whitespace in source path."
2677     test -e "$source_path/config.h" &&
2678         die "Out of tree builds are impossible with config.h in source dir."
2679 fi
2680
2681 for v in "$@"; do
2682     r=${v#*=}
2683     l=${v%"$r"}
2684     r=$(sh_quote "$r")
2685     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2686 done
2687
2688 find_things(){
2689     thing=$1
2690     pattern=$2
2691     file=$source_path/$3
2692     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2693 }
2694
2695 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2696 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2697 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2698 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2699 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2700 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2701 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2702 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2703 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2704 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2705 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2706
2707 ALL_COMPONENTS="
2708     $BSF_LIST
2709     $DECODER_LIST
2710     $DEMUXER_LIST
2711     $ENCODER_LIST
2712     $FILTER_LIST
2713     $HWACCEL_LIST
2714     $INDEV_LIST
2715     $MUXER_LIST
2716     $OUTDEV_LIST
2717     $PARSER_LIST
2718     $PROTOCOL_LIST
2719 "
2720
2721 for n in $COMPONENT_LIST; do
2722     v=$(toupper ${n%s})_LIST
2723     eval enable \$$v
2724     eval ${n}_if_any="\$$v"
2725 done
2726
2727 enable $ARCH_EXT_LIST
2728
2729 die_unknown(){
2730     echo "Unknown option \"$1\"."
2731     echo "See $0 --help for available options."
2732     exit 1
2733 }
2734
2735 print_3_columns() {
2736     cat | tr ' ' '\n' | sort | pr -r -3 -t
2737 }
2738
2739 show_list() {
2740     suffix=_$1
2741     shift
2742     echo $* | sed s/$suffix//g | print_3_columns
2743     exit 0
2744 }
2745
2746 rand_list(){
2747     IFS=', '
2748     set -- $*
2749     unset IFS
2750     for thing; do
2751         comp=${thing%:*}
2752         prob=${thing#$comp}
2753         prob=${prob#:}
2754         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2755         echo "prob ${prob:-0.5}"
2756         printf '%s\n' $comp
2757     done
2758 }
2759
2760 do_random(){
2761     action=$1
2762     shift
2763     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2764     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2765 }
2766
2767 for opt do
2768     optval="${opt#*=}"
2769     case "$opt" in
2770         --extra-ldflags=*)
2771             add_ldflags $optval
2772         ;;
2773         --extra-libs=*)
2774             add_extralibs $optval
2775         ;;
2776         --disable-devices)
2777             disable $INDEV_LIST $OUTDEV_LIST
2778         ;;
2779         --enable-debug=*)
2780             debuglevel="$optval"
2781         ;;
2782         --disable-programs)
2783             disable $PROGRAM_LIST
2784         ;;
2785         --disable-everything)
2786             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2787         ;;
2788         --disable-all)
2789             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2790             disable $LIBRARY_LIST $PROGRAM_LIST doc
2791         ;;
2792         --enable-random|--disable-random)
2793             action=${opt%%-random}
2794             do_random ${action#--} $COMPONENT_LIST
2795         ;;
2796         --enable-random=*|--disable-random=*)
2797             action=${opt%%-random=*}
2798             do_random ${action#--} $optval
2799         ;;
2800         --enable-*=*|--disable-*=*)
2801             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2802             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2803             eval list=\$$(toupper $thing)_LIST
2804             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2805             list=$(filter "$name" $list)
2806             [ "$list" = "" ] && warn "Option $opt did not match anything"
2807             $action $list
2808         ;;
2809         --enable-?*|--disable-?*)
2810             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2811             if is_in $option $COMPONENT_LIST; then
2812                 test $action = disable && action=unset
2813                 eval $action \$$(toupper ${option%s})_LIST
2814             elif is_in $option $CMDLINE_SELECT; then
2815                 $action $option
2816             else
2817                 die_unknown $opt
2818             fi
2819         ;;
2820         --list-*)
2821             NAME="${opt#--list-}"
2822             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2823             NAME=${NAME%s}
2824             eval show_list $NAME \$$(toupper $NAME)_LIST
2825         ;;
2826         --help|-h) show_help
2827         ;;
2828         --fatal-warnings) enable fatal_warnings
2829         ;;
2830         *)
2831             optname="${opt%%=*}"
2832             optname="${optname#--}"
2833             optname=$(echo "$optname" | sed 's/-/_/g')
2834             if is_in $optname $CMDLINE_SET; then
2835                 eval $optname='$optval'
2836             elif is_in $optname $CMDLINE_APPEND; then
2837                 append $optname "$optval"
2838             else
2839                 die_unknown $opt
2840             fi
2841         ;;
2842     esac
2843 done
2844
2845 disabled logging && logfile=/dev/null
2846
2847 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2848 set >> $logfile
2849
2850 test -n "$cross_prefix" && enable cross_compile
2851
2852 if enabled cross_compile; then
2853     test -n "$arch" && test -n "$target_os" ||
2854         die "Must specify target arch and OS when cross-compiling"
2855 fi
2856
2857 ar_default="${cross_prefix}${ar_default}"
2858 cc_default="${cross_prefix}${cc_default}"
2859 cxx_default="${cross_prefix}${cxx_default}"
2860 nm_default="${cross_prefix}${nm_default}"
2861 pkg_config_default="${cross_prefix}${pkg_config_default}"
2862 ranlib_default="${cross_prefix}${ranlib_default}"
2863 strip_default="${cross_prefix}${strip_default}"
2864 windres_default="${cross_prefix}${windres_default}"
2865
2866 sysinclude_default="${sysroot}/usr/include"
2867
2868 test -n "$valgrind" && toolchain="valgrind-memcheck"
2869
2870 case "$toolchain" in
2871     clang-asan)
2872         cc_default="clang"
2873         add_cflags  -fsanitize=address
2874         add_ldflags -fsanitize=address
2875     ;;
2876     clang-tsan)
2877         cc_default="clang"
2878         add_cflags  -fsanitize=thread -pie
2879         add_ldflags -fsanitize=thread -pie
2880     ;;
2881     clang-usan)
2882         cc_default="clang"
2883         add_cflags  -fsanitize=undefined
2884         add_ldflags -fsanitize=undefined
2885     ;;
2886     gcc-asan)
2887         cc_default="gcc"
2888         add_cflags  -fsanitize=address
2889         add_ldflags -fsanitize=address
2890     ;;
2891     gcc-tsan)
2892         cc_default="gcc"
2893         add_cflags  -fsanitize=thread -pie -fPIC
2894         add_ldflags -fsanitize=thread -pie -fPIC
2895     ;;
2896     gcc-usan)
2897         cc_default="gcc"
2898         add_cflags  -fsanitize=undefined
2899         add_ldflags -fsanitize=undefined
2900     ;;
2901     valgrind-massif)
2902         target_exec_default=${valgrind:-"valgrind"}
2903         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"
2904     ;;
2905     valgrind-memcheck)
2906         target_exec_default=${valgrind:-"valgrind"}
2907         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2908     ;;
2909     msvc)
2910         # Check whether the current MSVC version needs the C99 converter.
2911         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2912         # support enough of C99 to build ffmpeg. Default to the new
2913         # behaviour if the regexp was unable to match anything, since this
2914         # successfully parses the version number of existing supported
2915         # versions that require the converter (MSVC 2010 and 2012).
2916         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2917         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2918             cc_default="cl"
2919         else
2920             cc_default="c99wrap cl"
2921         fi
2922         ld_default="link"
2923         nm_default="dumpbin -symbols"
2924         ar_default="lib"
2925         target_os_default="win32"
2926         # Use a relative path for TMPDIR. This makes sure all the
2927         # ffconf temp files are written with a relative path, avoiding
2928         # issues with msys/win32 path conversion for MSVC parameters
2929         # such as -Fo<file> or -out:<file>.
2930         TMPDIR=.
2931     ;;
2932     icl)
2933         cc_default="icl"
2934         ld_default="xilink"
2935         nm_default="dumpbin -symbols"
2936         ar_default="xilib"
2937         target_os_default="win32"
2938         TMPDIR=.
2939     ;;
2940     gcov)
2941         add_cflags  -fprofile-arcs -ftest-coverage
2942         add_ldflags -fprofile-arcs -ftest-coverage
2943     ;;
2944     hardened)
2945         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2946         add_ldflags -Wl,-z,relro -Wl,-z,now
2947     ;;
2948     ?*)
2949         die "Unknown toolchain $toolchain"
2950     ;;
2951 esac
2952
2953 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2954 enabled cross_compile || host_cc_default=$cc
2955 set_default host_cc
2956
2957 if ! $pkg_config --version >/dev/null 2>&1; then
2958     warn "$pkg_config not found, library detection may fail."
2959     pkg_config=false
2960 fi
2961
2962 exesuf() {
2963     case $1 in
2964         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2965     esac
2966 }
2967
2968 EXESUF=$(exesuf $target_os)
2969 HOSTEXESUF=$(exesuf $host_os)
2970
2971 # set temporary file name
2972 : ${TMPDIR:=$TEMPDIR}
2973 : ${TMPDIR:=$TMP}
2974 : ${TMPDIR:=/tmp}
2975
2976 if [ -n "$tempprefix" ] ; then
2977     mktemp(){
2978         echo $tempprefix.${HOSTNAME}.${UID}
2979     }
2980 elif ! check_cmd mktemp -u XXXXXX; then
2981     # simple replacement for missing mktemp
2982     # NOT SAFE FOR GENERAL USE
2983     mktemp(){
2984         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2985     }
2986 fi
2987
2988 tmpfile(){
2989     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2990         (set -C; exec > $tmp) 2>/dev/null ||
2991         die "Unable to create temporary file in $TMPDIR."
2992     append TMPFILES $tmp
2993     eval $1=$tmp
2994 }
2995
2996 trap 'rm -f -- $TMPFILES' EXIT
2997
2998 tmpfile TMPASM .asm
2999 tmpfile TMPC   .c
3000 tmpfile TMPCPP .cpp
3001 tmpfile TMPE   $EXESUF
3002 tmpfile TMPH   .h
3003 tmpfile TMPM   .m
3004 tmpfile TMPO   .o
3005 tmpfile TMPS   .S
3006 tmpfile TMPSH  .sh
3007 tmpfile TMPV   .ver
3008
3009 unset -f mktemp
3010
3011 chmod +x $TMPE
3012
3013 # make sure we can execute files in $TMPDIR
3014 cat > $TMPSH 2>> $logfile <<EOF
3015 #! /bin/sh
3016 EOF
3017 chmod +x $TMPSH >> $logfile 2>&1
3018 if ! $TMPSH >> $logfile 2>&1; then
3019     cat <<EOF
3020 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3021 variable to another directory and make sure that it is not mounted noexec.
3022 EOF
3023     die "Sanity test failed."
3024 fi
3025
3026 ccc_flags(){
3027     for flag; do
3028         case $flag in
3029             -std=c99)           echo -c99                       ;;
3030             -mcpu=*)            echo -arch ${flag#*=}           ;;
3031             -mieee)             echo -ieee                      ;;
3032             -O*|-fast)          echo $flag                      ;;
3033             -fno-math-errno)    echo -assume nomath_errno       ;;
3034             -g)                 echo -g3                        ;;
3035             -Wall)              echo -msg_enable level2         ;;
3036             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3037             -Wl,*)              echo $flag                      ;;
3038             -f*|-W*)                                            ;;
3039             *)                  echo $flag                      ;;
3040         esac
3041    done
3042 }
3043
3044 cparser_flags(){
3045     for flag; do
3046         case $flag in
3047             -Wno-switch)             echo -Wno-switch-enum ;;
3048             -Wno-format-zero-length) ;;
3049             -Wdisabled-optimization) ;;
3050             -Wno-pointer-sign)       echo -Wno-other ;;
3051             *)                       echo $flag ;;
3052         esac
3053     done
3054 }
3055
3056 msvc_common_flags(){
3057     for flag; do
3058         case $flag in
3059             # In addition to specifying certain flags under the compiler
3060             # specific filters, they must be specified here as well or else the
3061             # generic catch all at the bottom will print the original flag.
3062             -Wall)                ;;
3063             -std=c99)             ;;
3064             # Common flags
3065             -fomit-frame-pointer) ;;
3066             -g)                   echo -Z7 ;;
3067             -fno-math-errno)      ;;
3068             -fno-common)          ;;
3069             -fno-signed-zeros)    ;;
3070             -fPIC)                ;;
3071             -mthumb)              ;;
3072             -march=*)             ;;
3073             -lz)                  echo zlib.lib ;;
3074             -lavifil32)           echo vfw32.lib ;;
3075             -lavicap32)           echo vfw32.lib user32.lib ;;
3076             -l*)                  echo ${flag#-l}.lib ;;
3077             *)                    echo $flag ;;
3078         esac
3079     done
3080 }
3081
3082 msvc_flags(){
3083     msvc_common_flags "$@"
3084     for flag; do
3085         case $flag in
3086             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3087                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3088                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3089                                        -wd4554 \
3090                                        -wd4273 ;;
3091         esac
3092     done
3093 }
3094
3095 icl_flags(){
3096     msvc_common_flags "$@"
3097     for flag; do
3098         case $flag in
3099             # Despite what Intel's documentation says -Wall, which is supported
3100             # on Windows, does enable remarks so disable them here.
3101             -Wall)                echo $flag -Qdiag-disable:remark ;;
3102             -std=c99)             echo -Qstd=c99 ;;
3103         esac
3104     done
3105 }
3106
3107 pgi_flags(){
3108     for flag; do
3109         case $flag in
3110             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3111             -fomit-frame-pointer) echo -Mnoframe ;;
3112             -g)                   echo -gopt ;;
3113             *)                    echo $flag ;;
3114         esac
3115     done
3116 }
3117
3118 suncc_flags(){
3119     for flag; do
3120         case $flag in
3121             -march=*|-mcpu=*)
3122                 case "${flag#*=}" in
3123                     native)                   echo -xtarget=native       ;;
3124                     v9|niagara)               echo -xarch=sparc          ;;
3125                     ultrasparc)               echo -xarch=sparcvis       ;;
3126                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3127                     i586|pentium)             echo -xchip=pentium        ;;
3128                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3129                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3130                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3131                     pentium4*)          echo -xtarget=pentium4           ;;
3132                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3133                     *-sse3)             echo -xarch=sse3                 ;;
3134                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3135                     bonnell)                   echo -xarch=ssse3         ;;
3136                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3137                     westmere)                  echo -xtarget=westmere    ;;
3138                     silvermont)                echo -xarch=sse4_2        ;;
3139                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3140                     core-avx*|ivybridge|haswell|broadwell)
3141                                                echo -xarch=avx           ;;
3142                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3143                     btver1)                    echo -xarch=amdsse4a      ;;
3144                     btver2|bdver*)             echo -xarch=avx           ;;
3145                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3146                     k8|opteron|athlon64|athlon-fx)
3147                                                echo -xarch=sse2a         ;;
3148                     athlon*)                   echo -xarch=pentium_proa  ;;
3149                 esac
3150                 ;;
3151             -std=c99)             echo -xc99              ;;
3152             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3153             -fPIC)                echo -KPIC -xcode=pic32 ;;
3154             -W*,*)                echo $flag              ;;
3155             -f*-*|-W*|-mimpure-text)                      ;;
3156             -shared)              echo -G                 ;;
3157             *)                    echo $flag              ;;
3158         esac
3159     done
3160 }
3161
3162 tms470_flags(){
3163     for flag; do
3164         case $flag in
3165             -march=*|-mcpu=*)
3166                 case "${flag#*=}" in
3167                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3168                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3169                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3170                     armv6*|arm11*)          echo -mv=6   ;;
3171                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3172                                             echo -mv=5e  ;;
3173                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3174                 esac
3175                 ;;
3176             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3177             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3178             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3179             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3180             -msoft-float)   echo --float_support=vfplib       ;;
3181             -O[0-3]|-mf=*)  echo $flag                        ;;
3182             -g)             echo -g -mn                       ;;
3183             -pds=*)         echo $flag                        ;;
3184             -D*|-I*)        echo $flag                        ;;
3185             --gcc|--abi=*)  echo $flag                        ;;
3186             -me)            echo $flag                        ;;
3187         esac
3188     done
3189 }
3190
3191 probe_cc(){
3192     pfx=$1
3193     _cc=$2
3194
3195     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3196     unset _ld_o _ldflags _ld_lib _ld_path
3197     unset _depflags _DEPCMD _DEPFLAGS
3198     _flags_filter=echo
3199
3200     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3201         true # no-op to avoid reading stdin in following checks
3202     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3203         _type=llvm_gcc
3204         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3205         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3206         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3207         _cflags_speed='-O3'
3208         _cflags_size='-Os'
3209     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3210         _type=gcc
3211         gcc_version=$($_cc --version | head -n1)
3212         gcc_basever=$($_cc -dumpversion)
3213         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3214         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3215         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3216         if ! $_cc -dumpversion | grep -q '^2\.'; then
3217             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3218         fi
3219         _cflags_speed='-O3'
3220         _cflags_size='-Os'
3221     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3222         _type=icc
3223         _ident=$($_cc --version | head -n1)
3224         _depflags='-MMD'
3225         _cflags_speed='-O3'
3226         _cflags_size='-Os'
3227         _cflags_noopt='-O1'
3228     elif $_cc -v 2>&1 | grep -q xlc; then
3229         _type=xlc
3230         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3231         _cflags_speed='-O5'
3232         _cflags_size='-O5 -qcompact'
3233     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3234         _type=ccc
3235         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3236         _DEPFLAGS='-M'
3237         _cflags_speed='-fast'
3238         _cflags_size='-O1'
3239         _flags_filter=ccc_flags
3240     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3241         test -d "$sysroot" || die "No valid sysroot specified."
3242         _type=armcc
3243         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3244         armcc_conf="$PWD/armcc.conf"
3245         $_cc --arm_linux_configure                 \
3246              --arm_linux_config_file="$armcc_conf" \
3247              --configure_sysroot="$sysroot"        \
3248              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3249              die "Error creating armcc configuration file."
3250         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3251         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3252         as_default="${cross_prefix}gcc"
3253         _depflags='-MMD'
3254         _cflags_speed='-O3'
3255         _cflags_size='-Os'
3256     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3257         _type=tms470
3258         _ident=$($_cc -version | head -n1 | tr -s ' ')
3259         _flags='--gcc --abi=eabi -me'
3260         _cc_e='-ppl -fe=$@'
3261         _cc_o='-fe=$@'
3262         _depflags='-ppa -ppd=$(@:.o=.d)'
3263         _cflags_speed='-O3 -mf=5'
3264         _cflags_size='-O3 -mf=2'
3265         _flags_filter=tms470_flags
3266     elif $_cc -v 2>&1 | grep -q clang; then
3267         _type=clang
3268         _ident=$($_cc --version | head -n1)
3269         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3270         _cflags_speed='-O3'
3271         _cflags_size='-Os'
3272     elif $_cc -V 2>&1 | grep -q Sun; then
3273         _type=suncc
3274         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3275         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3276         _DEPFLAGS='-xM1 -xc99'
3277         _ldflags='-std=c99'
3278         _cflags_speed='-O5'
3279         _cflags_size='-O5 -xspace'
3280         _flags_filter=suncc_flags
3281     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3282         _type=pathscale
3283         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3284         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3285         _cflags_speed='-O2'
3286         _cflags_size='-Os'
3287         _flags_filter='filter_out -Wdisabled-optimization'
3288     elif $_cc -v 2>&1 | grep -q Open64; then
3289         _type=open64
3290         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3291         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3292         _cflags_speed='-O2'
3293         _cflags_size='-Os'
3294         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3295     elif $_cc -V 2>&1 | grep -q Portland; then
3296         _type=pgi
3297         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3298         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3299         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3300         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3301         _cflags_noopt="-O"
3302         _flags_filter=pgi_flags
3303     elif $_cc 2>&1 | grep -q Microsoft; then
3304         _type=msvc
3305         _ident=$($cc 2>&1 | head -n1)
3306         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3307         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3308         _cflags_speed="-O2"
3309         _cflags_size="-O1"
3310         if $_cc 2>&1 | grep -q Linker; then
3311             _ld_o='-out:$@'
3312         else
3313             _ld_o='-Fe$@'
3314         fi
3315         _cc_o='-Fo$@'
3316         _cc_e='-P -Fi$@'
3317         _flags_filter=msvc_flags
3318         _ld_lib='lib%.a'
3319         _ld_path='-libpath:'
3320         _flags='-nologo'
3321         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3322         if [ $pfx = hostcc ]; then
3323             append _cflags -Dsnprintf=_snprintf
3324         fi
3325         disable stripping
3326     elif $_cc 2>&1 | grep -q Intel; then
3327         _type=icl
3328         _ident=$($cc 2>&1 | head -n1)
3329         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3330         # Not only is O3 broken on 13.x+ but it is slower on all previous
3331         # versions (tested) as well.
3332         _cflags_speed="-O2"
3333         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3334         if $_cc 2>&1 | grep -q Linker; then
3335             _ld_o='-out:$@'
3336         else
3337             _ld_o='-Fe$@'
3338         fi
3339         _cc_o='-Fo$@'
3340         _cc_e='-P'
3341         _flags_filter=icl_flags
3342         _ld_lib='lib%.a'
3343         _ld_path='-libpath:'
3344         # -Qdiag-error to make icl error when seeing certain unknown arguments
3345         _flags='-nologo -Qdiag-error:4044,10157'
3346         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3347         # with MSVC which enables it by default.
3348         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3349         if [ $pfx = hostcc ]; then
3350             append _cflags -Dsnprintf=_snprintf
3351         fi
3352     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3353         _type=cparser
3354         _ident=$($_cc --version | head -n1)
3355         _depflags='-MMD'
3356         _cflags_speed='-O4'
3357         _cflags_size='-O2'
3358         _flags_filter=cparser_flags
3359     fi
3360
3361     eval ${pfx}_type=\$_type
3362     eval ${pfx}_ident=\$_ident
3363 }
3364
3365 set_ccvars(){
3366     eval ${1}_C=\${_cc_c-\${${1}_C}}
3367     eval ${1}_E=\${_cc_e-\${${1}_E}}
3368     eval ${1}_O=\${_cc_o-\${${1}_O}}
3369
3370     if [ -n "$_depflags" ]; then
3371         eval ${1}_DEPFLAGS=\$_depflags
3372     else
3373         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3374         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3375         eval DEP${1}FLAGS=\$_flags
3376     fi
3377 }
3378
3379 probe_cc cc "$cc"
3380 cflags_filter=$_flags_filter
3381 cflags_speed=$_cflags_speed
3382 cflags_size=$_cflags_size
3383 cflags_noopt=$_cflags_noopt
3384 add_cflags $_flags $_cflags
3385 cc_ldflags=$_ldflags
3386 set_ccvars CC
3387
3388 probe_cc hostcc "$host_cc"
3389 host_cflags_filter=$_flags_filter
3390 add_host_cflags  $_flags $_cflags
3391 set_ccvars HOSTCC
3392
3393 test -n "$cc_type" && enable $cc_type ||
3394     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3395
3396 : ${as_default:=$cc}
3397 : ${dep_cc_default:=$cc}
3398 : ${ld_default:=$cc}
3399 : ${host_ld_default:=$host_cc}
3400 set_default ar as dep_cc ld host_ld windres
3401
3402 probe_cc as "$as"
3403 asflags_filter=$_flags_filter
3404 add_asflags $_flags $_cflags
3405 set_ccvars AS
3406
3407 probe_cc ld "$ld"
3408 ldflags_filter=$_flags_filter
3409 add_ldflags $_flags $_ldflags
3410 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3411 LD_O=${_ld_o-$LD_O}
3412 LD_LIB=${_ld_lib-$LD_LIB}
3413 LD_PATH=${_ld_path-$LD_PATH}
3414
3415 probe_cc hostld "$host_ld"
3416 host_ldflags_filter=$_flags_filter
3417 add_host_ldflags $_flags $_ldflags
3418 HOSTLD_O=${_ld_o-$HOSTLD_O}
3419
3420 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3421     probe_cc depcc "$dep_cc"
3422     CCDEP=${_DEPCMD:-$DEPCMD}
3423     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3424     DEPCCFLAGS=$_flags
3425 fi
3426
3427 if $ar 2>&1 | grep -q Microsoft; then
3428     arflags="-nologo"
3429     ar_o='-out:$@'
3430 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3431     arflags="rq"
3432     ar_o='$@'
3433 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3434     arflags='-Xany -r -c'
3435     ar_o='$@'
3436 else
3437     arflags="rc"
3438     ar_o='$@'
3439 fi
3440
3441 add_cflags $extra_cflags
3442 add_cxxflags $extra_cxxflags
3443 add_asflags $extra_cflags
3444
3445 if test -n "$sysroot"; then
3446     case "$cc_type" in
3447         gcc|llvm_gcc|clang)
3448             add_cppflags --sysroot="$sysroot"
3449             add_ldflags --sysroot="$sysroot"
3450 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3451             add_cppflags -isysroot "$sysroot"
3452             add_ldflags -isysroot "$sysroot"
3453         ;;
3454         tms470)
3455             add_cppflags -I"$sysinclude"
3456             add_ldflags  --sysroot="$sysroot"
3457         ;;
3458     esac
3459 fi
3460
3461 if test "$cpu" = host; then
3462     enabled cross_compile &&
3463         die "--cpu=host makes no sense when cross-compiling."
3464
3465     case "$cc_type" in
3466         gcc|llvm_gcc)
3467             check_native(){
3468                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3469                 sed -n "/cc1.*$1=/{
3470                             s/.*$1=\\([^ ]*\\).*/\\1/
3471                             p
3472                             q
3473                         }" $TMPE
3474             }
3475             cpu=$(check_native -march || check_native -mcpu)
3476         ;;
3477     esac
3478
3479     test "${cpu:-host}" = host &&
3480         die "--cpu=host not supported with compiler $cc"
3481 fi
3482
3483 # Deal with common $arch aliases
3484 case "$arch" in
3485     aarch64|arm64)
3486         arch="aarch64"
3487     ;;
3488     arm*|iPad*|iPhone*)
3489         arch="arm"
3490     ;;
3491     mips*|IP*)
3492         arch="mips"
3493     ;;
3494     parisc*|hppa*)
3495         arch="parisc"
3496     ;;
3497     "Power Macintosh"|ppc*|powerpc*)
3498         arch="ppc"
3499     ;;
3500     s390|s390x)
3501         arch="s390"
3502     ;;
3503     sh4|sh)
3504         arch="sh4"
3505     ;;
3506     sun4u|sparc*)
3507         arch="sparc"
3508     ;;
3509     tilegx|tile-gx)
3510         arch="tilegx"
3511     ;;
3512     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3513         arch="x86"
3514     ;;
3515 esac
3516
3517 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3518 enable $arch
3519
3520 # Add processor-specific flags
3521 if enabled aarch64; then
3522
3523     case $cpu in
3524         armv*)
3525             cpuflags="-march=$cpu"
3526         ;;
3527         *)
3528             cpuflags="-mcpu=$cpu"
3529         ;;
3530     esac
3531
3532 elif enabled alpha; then
3533
3534     cpuflags="-mcpu=$cpu"
3535
3536 elif enabled arm; then
3537
3538     check_arm_arch() {
3539         check_cpp_condition stddef.h \
3540             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3541             $cpuflags
3542     }
3543
3544     probe_arm_arch() {
3545         if   check_arm_arch 4;        then echo armv4;
3546         elif check_arm_arch 4T;       then echo armv4t;
3547         elif check_arm_arch 5;        then echo armv5;
3548         elif check_arm_arch 5E;       then echo armv5e;
3549         elif check_arm_arch 5T;       then echo armv5t;
3550         elif check_arm_arch 5TE;      then echo armv5te;
3551         elif check_arm_arch 5TEJ;     then echo armv5te;
3552         elif check_arm_arch 6;        then echo armv6;
3553         elif check_arm_arch 6J;       then echo armv6j;
3554         elif check_arm_arch 6K;       then echo armv6k;
3555         elif check_arm_arch 6Z;       then echo armv6z;
3556         elif check_arm_arch 6ZK;      then echo armv6zk;
3557         elif check_arm_arch 6T2;      then echo armv6t2;
3558         elif check_arm_arch 7;        then echo armv7;
3559         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3560         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3561         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3562         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3563         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3564         fi
3565     }
3566
3567     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3568
3569     case $cpu in
3570         armv*)
3571             cpuflags="-march=$cpu"
3572             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3573         ;;
3574         *)
3575             cpuflags="-mcpu=$cpu"
3576             case $cpu in
3577                 cortex-a*)                               subarch=armv7a  ;;
3578                 cortex-r*)                               subarch=armv7r  ;;
3579                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3580                 arm11*)                                  subarch=armv6   ;;
3581                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3582                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3583                 *)                             subarch=$(probe_arm_arch) ;;
3584             esac
3585         ;;
3586     esac
3587
3588     case "$subarch" in
3589         armv5t*)    enable fast_clz                ;;
3590         armv[6-8]*) enable fast_clz fast_unaligned ;;
3591     esac
3592
3593 elif enabled avr32; then
3594
3595     case $cpu in
3596         ap7[02]0[0-2])
3597             subarch="avr32_ap"
3598             cpuflags="-mpart=$cpu"
3599         ;;
3600         ap)
3601             subarch="avr32_ap"
3602             cpuflags="-march=$cpu"
3603         ;;
3604         uc3[ab]*)
3605             subarch="avr32_uc"
3606             cpuflags="-mcpu=$cpu"
3607         ;;
3608         uc)
3609             subarch="avr32_uc"
3610             cpuflags="-march=$cpu"
3611         ;;
3612     esac
3613
3614 elif enabled bfin; then
3615
3616     cpuflags="-mcpu=$cpu"
3617
3618 elif enabled mips; then
3619
3620     cpuflags="-march=$cpu"
3621
3622     case $cpu in
3623         24kc)
3624             disable mipsfpu
3625             disable mipsdspr1
3626             disable mipsdspr2
3627         ;;
3628         24kf*)
3629             disable mipsdspr1
3630             disable mipsdspr2
3631         ;;
3632         24kec|34kc|1004kc)
3633             disable mipsfpu
3634             disable mipsdspr2
3635         ;;
3636         24kef*|34kf*|1004kf*)
3637             disable mipsdspr2
3638         ;;
3639         74kc)
3640             disable mipsfpu
3641         ;;
3642     esac
3643
3644 elif enabled ppc; then
3645
3646     disable ldbrx
3647
3648     case $(tolower $cpu) in
3649         601|ppc601|powerpc601)
3650             cpuflags="-mcpu=601"
3651             disable altivec
3652         ;;
3653         603*|ppc603*|powerpc603*)
3654             cpuflags="-mcpu=603"
3655             disable altivec
3656         ;;
3657         604*|ppc604*|powerpc604*)
3658             cpuflags="-mcpu=604"
3659             disable altivec
3660         ;;
3661         g3|75*|ppc75*|powerpc75*)
3662             cpuflags="-mcpu=750"
3663             disable altivec
3664         ;;
3665         g4|745*|ppc745*|powerpc745*)
3666             cpuflags="-mcpu=7450"
3667         ;;
3668         74*|ppc74*|powerpc74*)
3669             cpuflags="-mcpu=7400"
3670         ;;
3671         g5|970|ppc970|powerpc970)
3672             cpuflags="-mcpu=970"
3673         ;;
3674         power[3-7]*)
3675             cpuflags="-mcpu=$cpu"
3676         ;;
3677         cell)
3678             cpuflags="-mcpu=cell"
3679             enable ldbrx
3680         ;;
3681         e500mc)
3682             cpuflags="-mcpu=e500mc"
3683             disable altivec
3684         ;;
3685         e500v2)
3686             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3687             disable altivec
3688             disable dcbzl
3689         ;;
3690         e500)
3691             cpuflags="-mcpu=8540 -mhard-float"
3692             disable altivec
3693             disable dcbzl
3694         ;;
3695     esac
3696
3697 elif enabled sparc; then
3698
3699     case $cpu in
3700         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3701             cpuflags="-mcpu=$cpu"
3702         ;;
3703         ultrasparc*|niagara[234])
3704             cpuflags="-mcpu=$cpu"
3705         ;;
3706     esac
3707
3708 elif enabled x86; then
3709
3710     case $cpu in
3711         i[345]86|pentium)
3712             cpuflags="-march=$cpu"
3713             disable mmx
3714         ;;
3715         # targets that do NOT support nopl and conditional mov (cmov)
3716         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3717             cpuflags="-march=$cpu"
3718             disable i686
3719         ;;
3720         # targets that do support nopl and conditional mov (cmov)
3721         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3722         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3723             cpuflags="-march=$cpu"
3724             enable i686
3725             enable fast_cmov
3726         ;;
3727         # targets that do support conditional mov but on which it's slow
3728         pentium4|pentium4m|prescott|nocona)
3729             cpuflags="-march=$cpu"
3730             enable i686
3731             disable fast_cmov
3732         ;;
3733     esac
3734
3735 fi
3736
3737 if [ "$cpu" != generic ]; then
3738     add_cflags  $cpuflags
3739     add_asflags $cpuflags
3740 fi
3741
3742 # compiler sanity check
3743 check_exec <<EOF
3744 int main(void){ return 0; }
3745 EOF
3746 if test "$?" != 0; then
3747     echo "$cc is unable to create an executable file."
3748     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3749         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3750         echo "Only do this if you know what cross compiling means."
3751     fi
3752     die "C compiler test failed."
3753 fi
3754
3755 add_cppflags -D_ISOC99_SOURCE
3756 add_cxxflags -D__STDC_CONSTANT_MACROS
3757 check_cflags -std=c99
3758 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3759 #include <stdlib.h>
3760 EOF
3761 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3762 #include <stdlib.h>
3763 EOF
3764
3765 add_host_cppflags -D_ISOC99_SOURCE
3766 check_host_cflags -std=c99
3767 check_host_cflags -Wall
3768 check_host_cflags -O3
3769
3770 check_64bit(){
3771     arch32=$1
3772     arch64=$2
3773     expr=$3
3774     check_code cc "" "int test[2*($expr) - 1]" &&
3775         subarch=$arch64 || subarch=$arch32
3776 }
3777
3778 case "$arch" in
3779     aarch64|alpha|ia64)
3780         spic=$shared
3781     ;;
3782     mips)
3783         check_64bit mips mips64 '_MIPS_SIM > 1'
3784         spic=$shared
3785     ;;
3786     parisc)
3787         check_64bit parisc parisc64 'sizeof(void *) > 4'
3788         spic=$shared
3789     ;;
3790     ppc)
3791         check_64bit ppc ppc64 'sizeof(void *) > 4'
3792         spic=$shared
3793     ;;
3794     s390)
3795         check_64bit s390 s390x 'sizeof(void *) > 4'
3796         spic=$shared
3797     ;;
3798     sparc)
3799         check_64bit sparc sparc64 'sizeof(void *) > 4'
3800         spic=$shared
3801     ;;
3802     x86)
3803         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3804         if test "$subarch" = "x86_64"; then
3805             spic=$shared
3806         fi
3807     ;;
3808     ppc)
3809         check_cc <<EOF && subarch="ppc64"
3810         int test[(int)sizeof(char*) - 7];
3811 EOF
3812     ;;
3813 esac
3814
3815 enable $subarch
3816 enabled spic && enable_weak pic
3817
3818 # OS specific
3819 case $target_os in
3820     aix)
3821         SHFLAGS=-shared
3822         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3823         enabled shared && add_ldflags -Wl,-brtl
3824         ;;
3825     haiku)
3826         prefix_default="/boot/common"
3827         network_extralibs="-lnetwork"
3828         host_libs=
3829         ;;
3830     sunos)
3831         SHFLAGS='-shared -Wl,-h,$$(@F)'
3832         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3833         network_extralibs="-lsocket -lnsl"
3834         # When using suncc to build, the Solaris linker will mark
3835         # an executable with each instruction set encountered by
3836         # the Solaris assembler.  As our libraries contain their own
3837         # guards for processor-specific code, instead suppress
3838         # generation of the HWCAPS ELF section on Solaris x86 only.
3839         enabled_all suncc x86 &&
3840             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3841             add_ldflags -Wl,-M,mapfile
3842         nm_default='nm -P -g'
3843         ;;
3844     netbsd)
3845         disable symver
3846         oss_indev_extralibs="-lossaudio"
3847         oss_outdev_extralibs="-lossaudio"
3848         enabled gcc || check_ldflags -Wl,-zmuldefs
3849         ;;
3850     openbsd|bitrig)
3851         disable symver
3852         SHFLAGS='-shared'
3853         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3854         SLIB_INSTALL_LINKS=
3855         oss_indev_extralibs="-lossaudio"
3856         oss_outdev_extralibs="-lossaudio"
3857         ;;
3858     dragonfly)
3859         disable symver
3860         ;;
3861     freebsd)
3862         ;;
3863     bsd/os)
3864         add_extralibs -lpoll -lgnugetopt
3865         strip="strip -d"
3866         ;;
3867     darwin)
3868         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3869         enabled ppc && add_asflags -force_cpusubtype_ALL
3870         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3871         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3872         strip="${strip} -x"
3873         add_ldflags -Wl,-dynamic,-search_paths_first
3874         SLIBSUF=".dylib"
3875         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3876         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3877         objformat="macho"
3878         enabled x86_64 && objformat="macho64"
3879         enabled_any pic shared ||
3880             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3881         ;;
3882     mingw32*)
3883         if test $target_os = "mingw32ce"; then
3884             disable network
3885         else
3886             target_os=mingw32
3887         fi
3888         LIBTARGET=i386
3889         if enabled x86_64; then
3890             LIBTARGET="i386:x86-64"
3891         elif enabled arm; then
3892             LIBTARGET=arm-wince
3893         fi
3894         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3895         check_ldflags -Wl,--nxcompat
3896         check_ldflags -Wl,--dynamicbase
3897         shlibdir_default="$bindir_default"
3898         SLIBPREF=""
3899         SLIBSUF=".dll"
3900         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3901         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3902         dlltool="${cross_prefix}dlltool"
3903         if check_cmd lib.exe -list; then
3904             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3905             if enabled x86_64; then
3906                 LIBTARGET=x64
3907             fi
3908         elif check_cmd $dlltool --version; then
3909             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3910         fi
3911         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3912         SLIB_INSTALL_LINKS=
3913         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3914         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3915         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3916         objformat="win32"
3917         ranlib=:
3918         enable dos_paths
3919         ;;
3920     win32|win64)
3921         disable symver
3922         if enabled shared; then
3923             # Link to the import library instead of the normal static library
3924             # for shared libs.
3925             LD_LIB='%.lib'
3926             # Cannot build both shared and static libs with MSVC or icl.
3927             disable static
3928         fi
3929         shlibdir_default="$bindir_default"
3930         SLIBPREF=""
3931         SLIBSUF=".dll"
3932         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3933         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3934         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3935         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3936         SLIB_INSTALL_LINKS=
3937         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3938         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3939         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3940         objformat="win32"
3941         ranlib=:
3942         enable dos_paths
3943         ;;
3944     cygwin*)
3945         target_os=cygwin
3946         shlibdir_default="$bindir_default"
3947         SLIBPREF="cyg"
3948         SLIBSUF=".dll"
3949         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3950         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3951         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3952         SLIB_INSTALL_LINKS=
3953         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3954         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3955         objformat="win32"
3956         enable dos_paths
3957         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3958         ;;
3959     *-dos|freedos|opendos)
3960         network_extralibs="-lsocket"
3961         objformat="coff"
3962         enable dos_paths
3963         add_cppflags -U__STRICT_ANSI__
3964         ;;
3965     linux)
3966         enable dv1394
3967         ;;
3968     irix*)
3969         target_os=irix
3970         ranlib="echo ignoring ranlib"
3971         ;;
3972     os/2*)
3973         strip="lxlite -CS"
3974         ln_s="cp -f"
3975         objformat="aout"
3976         add_cppflags -D_GNU_SOURCE
3977         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3978         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3979         LIBSUF="_s.a"
3980         SLIBPREF=""
3981         SLIBSUF=".dll"
3982         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3983         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3984         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3985             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3986             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3987             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3988             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3989             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3990         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3991             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3992         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3993         enable dos_paths
3994         enable_weak os2threads
3995         ;;
3996     gnu/kfreebsd)
3997         add_cppflags -D_BSD_SOURCE
3998         ;;
3999     gnu)
4000         ;;
4001     qnx)
4002         add_cppflags -D_QNX_SOURCE
4003         network_extralibs="-lsocket"
4004         ;;
4005     symbian)
4006         SLIBSUF=".dll"
4007         enable dos_paths
4008         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4009         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4010         add_ldflags -Wl,--target1-abs,--no-undefined \
4011                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4012                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4013         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4014                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4015                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4016         ;;
4017     osf1)
4018         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4019         ;;
4020     minix)
4021         ;;
4022     plan9)
4023         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4024                      -D_REENTRANT_SOURCE        \
4025                      -D_RESEARCH_SOURCE         \
4026                      -DFD_SETSIZE=96            \
4027                      -DHAVE_SOCK_OPTS
4028         add_compat strtod.o strtod=avpriv_strtod
4029         network_extralibs='-lbsd'
4030         exeobjs=compat/plan9/main.o
4031         disable ffserver
4032         cp_f='cp'
4033         ;;
4034     none)
4035         ;;
4036     *)
4037         die "Unknown OS '$target_os'."
4038         ;;
4039 esac
4040
4041 # determine libc flavour
4042
4043 probe_libc(){
4044     pfx=$1
4045     pfx_no_=${pfx%_}
4046     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4047     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4048         eval ${pfx}libc_type=uclibc
4049         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4050     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4051         eval ${pfx}libc_type=glibc
4052         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4053     # MinGW headers can be installed on Cygwin, so check for newlib first.
4054     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4055         eval ${pfx}libc_type=newlib
4056         add_${pfx}cppflags -U__STRICT_ANSI__
4057     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4058     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4059         eval ${pfx}libc_type=mingw64
4060         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4061             add_compat msvcrt/snprintf.o
4062             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4063         fi
4064         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4065         eval test \$${pfx_no_}cc_type = "gcc" &&
4066             add_${pfx}cppflags -D__printf__=__gnu_printf__
4067     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4068          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4069         eval ${pfx}libc_type=mingw32
4070         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4071             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4072             die "ERROR: MinGW32 runtime version must be >= 3.15."
4073         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4074         eval test \$${pfx_no_}cc_type = "gcc" &&
4075             add_${pfx}cppflags -D__printf__=__gnu_printf__
4076     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4077         eval ${pfx}libc_type=msvcrt
4078         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4079         # 0x601 by default unless something else is set by the user.
4080         # This can easily lead to us detecting functions only present
4081         # in such new versions and producing binaries requiring windows 7.0.
4082         # Therefore explicitly set the default to XP unless the user has
4083         # set something else on the command line.
4084         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4085             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4086     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4087         eval ${pfx}libc_type=klibc
4088     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4089         eval ${pfx}libc_type=bionic
4090     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4091         eval ${pfx}libc_type=solaris
4092         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4093     fi
4094 }
4095
4096 probe_libc
4097 test -n "$libc_type" && enable libc_$libc_type
4098 probe_libc host_
4099 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4100
4101 case $libc_type in
4102     bionic)
4103         add_compat strtod.o strtod=avpriv_strtod
4104         ;;
4105     msvcrt)
4106         add_compat strtod.o strtod=avpriv_strtod
4107         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4108                                      _snprintf=avpriv_snprintf  \
4109                                      vsnprintf=avpriv_vsnprintf
4110         ;;
4111 esac
4112
4113 # hacks for compiler/libc/os combinations
4114
4115 if enabled_all tms470 libc_glibc; then
4116     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4117     add_cppflags -D__USER_LABEL_PREFIX__=
4118     add_cppflags -D__builtin_memset=memset
4119     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4120     add_cflags   -pds=48    # incompatible redefinition of macro
4121 fi
4122
4123 if enabled_all ccc libc_glibc; then
4124     add_ldflags -Wl,-z,now  # calls to libots crash without this
4125 fi
4126
4127 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4128     add_cppflags '-I\$(SRC_PATH)/compat/float'
4129
4130 esc(){
4131     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4132 }
4133
4134 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4135
4136 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4137
4138 set_default $PATHS_LIST
4139 set_default nm
4140
4141 # we need to build at least one lib type
4142 if ! enabled_any static shared; then
4143     cat <<EOF
4144 At least one library type must be built.
4145 Specify --enable-static to build the static libraries or --enable-shared to
4146 build the shared libraries as well. To only build the shared libraries specify
4147 --disable-static in addition to --enable-shared.
4148 EOF
4149     exit 1;
4150 fi
4151
4152 die_license_disabled() {
4153     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4154 }
4155
4156 die_license_disabled_gpl() {
4157     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4158 }
4159
4160 die_license_disabled gpl frei0r
4161 die_license_disabled gpl libcdio
4162 die_license_disabled gpl libutvideo
4163 die_license_disabled gpl libvidstab
4164 die_license_disabled gpl libx264
4165 die_license_disabled gpl libx265
4166 die_license_disabled gpl libxavs
4167 die_license_disabled gpl libxvid
4168 die_license_disabled gpl libzvbi
4169 die_license_disabled gpl x11grab
4170
4171 die_license_disabled nonfree libaacplus
4172 die_license_disabled nonfree libfaac
4173 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4174 enabled gpl && die_license_disabled_gpl nonfree openssl
4175
4176 die_license_disabled version3 libopencore_amrnb
4177 die_license_disabled version3 libopencore_amrwb
4178 die_license_disabled version3 libvo_aacenc
4179 die_license_disabled version3 libvo_amrwbenc
4180
4181 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4182
4183 disabled optimizations || check_cflags -fomit-frame-pointer
4184
4185 enable_weak_pic() {
4186     disabled pic && return
4187     enable pic
4188     add_cppflags -DPIC
4189     case "$target_os" in
4190     mingw*|cygwin*)
4191         ;;
4192     *)
4193         add_cflags -fPIC
4194         ;;
4195     esac
4196     add_asflags  -fPIC
4197 }
4198
4199 enabled pic && enable_weak_pic
4200
4201 check_cc <<EOF || die "Symbol mangling check failed."
4202 int ff_extern;
4203 EOF
4204 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4205 extern_prefix=${sym%%ff_extern*}
4206
4207 check_cc <<EOF && enable_weak inline_asm
4208 void foo(void) { __asm__ volatile ("" ::); }
4209 EOF
4210
4211 _restrict=
4212 for restrict_keyword in restrict __restrict__ __restrict; do
4213     check_cc <<EOF && _restrict=$restrict_keyword && break
4214 void foo(char * $restrict_keyword p);
4215 EOF
4216 done
4217
4218 check_cc <<EOF && enable pragma_deprecated
4219 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4220 EOF
4221
4222 check_cc <<EOF && enable attribute_packed
4223 struct { int x; } __attribute__((packed)) x;
4224 EOF
4225
4226 check_cc <<EOF && enable attribute_may_alias
4227 union { int x; } __attribute__((may_alias)) x;
4228 EOF
4229
4230 check_cc <<EOF || die "endian test failed"
4231 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4232 EOF
4233 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4234
4235 check_inline_asm inline_asm_labels '"1:\n"'
4236
4237 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4238
4239 if enabled aarch64; then
4240     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4241     # internal assembler in clang 3.3 does not support this instruction
4242     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4243     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4244
4245     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4246
4247 elif enabled alpha; then
4248
4249     check_cflags -mieee
4250
4251 elif enabled arm; then
4252
4253     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4254 float func(float a, float b){ return a+b; }
4255 EOF
4256
4257     enabled thumb && check_cflags -mthumb || check_cflags -marm
4258     nogas=die
4259
4260     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4261         enable vfp_args
4262     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4263         case "${cross_prefix:-$cc}" in
4264             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4265             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4266 __asm__ (".eabi_attribute 28, 1");
4267 int main(void) { return 0; }
4268 EOF
4269         esac
4270         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4271     fi
4272
4273     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4274     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4275     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4276     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4277     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4278     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4279
4280     [ $target_os = linux ] ||
4281         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4282             $ARCH_EXT_LIST_ARM
4283
4284     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4285
4286     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4287
4288 elif enabled mips; then
4289
4290     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4291     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4292      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4293     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4294      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4295     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4296      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4297     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4298      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4299
4300 elif enabled parisc; then
4301
4302     if enabled gcc; then
4303         case $($cc -dumpversion) in
4304             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4305         esac
4306     fi
4307
4308 elif enabled ppc; then
4309
4310     enable local_aligned_8 local_aligned_16 local_aligned_32
4311
4312     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4313     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4314     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4315     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4316
4317     # AltiVec flags: The FSF version of GCC differs from the Apple version
4318     if enabled altivec; then
4319         if ! enabled_any pic ppc64; then
4320             nogas=warn
4321         fi
4322         check_cflags -maltivec -mabi=altivec &&
4323         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4324         check_cflags -faltivec
4325
4326         # check if our compiler supports Motorola AltiVec C API
4327         check_cc <<EOF || disable altivec
4328 $inc_altivec_h
4329 int main(void) {
4330     vector signed int v1 = (vector signed int) { 0 };
4331     vector signed int v2 = (vector signed int) { 1 };
4332     v1 = vec_add(v1, v2);
4333     return 0;
4334 }
4335 EOF
4336
4337         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4338     fi
4339
4340 elif enabled x86; then
4341
4342     check_builtin rdtsc    intrin.h   "__rdtsc()"
4343     check_builtin mm_empty mmintrin.h "_mm_empty()"
4344
4345     enable local_aligned_8 local_aligned_16 local_aligned_32
4346
4347     # check whether EBP is available on x86
4348     # As 'i' is stored on the stack, this program will crash
4349     # if the base pointer is used to access it because the
4350     # base pointer is cleared in the inline assembly code.
4351     check_exec_crash <<EOF && enable ebp_available
4352 volatile int i=0;
4353 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4354 return i;
4355 EOF
4356
4357     # check whether EBX is available on x86
4358     check_inline_asm ebx_available '""::"b"(0)' &&
4359         check_inline_asm ebx_available '"":::"%ebx"'
4360
4361     # check whether xmm clobbers are supported
4362     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4363
4364     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4365         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4366
4367     # check whether binutils is new enough to compile SSSE3/MMXEXT
4368     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4369     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4370
4371     if ! disabled_any asm mmx yasm; then
4372         if check_cmd $yasmexe --version; then
4373             enabled x86_64 && yasm_extra="-m amd64"
4374             yasm_debug="-g dwarf2"
4375         elif check_cmd nasm -v; then
4376             yasmexe=nasm
4377             yasm_debug="-g -F dwarf"
4378             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4379         fi
4380
4381         YASMFLAGS="-f $objformat $yasm_extra"
4382         enabled pic               && append YASMFLAGS "-DPIC"
4383         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4384         case "$objformat" in
4385             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4386         esac
4387
4388         check_yasm "movbe ecx, [5]" && enable yasm ||
4389             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4390         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4391         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4392         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4393         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4394         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4395         check_yasm "CPU amdnop" || disable cpunop
4396     fi
4397
4398     case "$cpu" in
4399         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4400             disable fast_clz
4401         ;;
4402     esac
4403
4404 fi
4405
4406 if enabled asm; then
4407     as=${gas:=$as}
4408     check_as <<EOF && enable gnu_as || \
4409         $nogas "GNU assembler not found, install gas-preprocessor"
4410 .macro m n
4411 \n: .int 0
4412 .endm
4413 m x
4414 EOF
4415 fi
4416
4417 check_ldflags -Wl,--as-needed
4418
4419 if check_func dlopen; then
4420     ldl=
4421 elif check_func dlopen -ldl; then
4422     ldl=-ldl
4423 fi
4424
4425 if ! disabled network; then
4426     check_func getaddrinfo $network_extralibs
4427     check_func getservbyport $network_extralibs
4428     check_func inet_aton $network_extralibs
4429
4430     check_type netdb.h "struct addrinfo"
4431     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4432     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4433     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4434     check_type poll.h "struct pollfd"
4435     check_type netinet/sctp.h "struct sctp_event_subscribe"
4436     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4437     check_type netinet/in.h "struct sockaddr_in6"
4438     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4439     check_type "sys/types.h sys/socket.h" socklen_t
4440
4441     # Prefer arpa/inet.h over winsock2
4442     if check_header arpa/inet.h ; then
4443         check_func closesocket
4444     elif check_header winsock2.h ; then
4445         check_func_headers winsock2.h closesocket -lws2 &&
4446             network_extralibs="-lws2" ||
4447         { check_func_headers winsock2.h closesocket -lws2_32 &&
4448             network_extralibs="-lws2_32"; } || disable winsock2_h network
4449         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4450
4451         check_type ws2tcpip.h socklen_t
4452         check_type ws2tcpip.h "struct addrinfo"
4453         check_type ws2tcpip.h "struct group_source_req"
4454         check_type ws2tcpip.h "struct ip_mreq_source"
4455         check_type ws2tcpip.h "struct ipv6_mreq"
4456         check_type winsock2.h "struct pollfd"
4457         check_struct winsock2.h "struct sockaddr" sa_len
4458         check_type ws2tcpip.h "struct sockaddr_in6"
4459         check_type ws2tcpip.h "struct sockaddr_storage"
4460     else
4461         disable network
4462     fi
4463 fi
4464
4465 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4466 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4467 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4468 check_builtin sarestart signal.h "SA_RESTART"
4469 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4470
4471 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4472 check_func  ${malloc_prefix}memalign            && enable memalign
4473 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4474
4475 check_func  access
4476 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4477 check_func  fcntl
4478 check_func  fork
4479 check_func  gethrtime
4480 check_func  getopt
4481 check_func  getrusage
4482 check_func  gettimeofday
4483 check_func  isatty
4484 check_func  localtime_r
4485 check_func  mach_absolute_time
4486 check_func  mkstemp
4487 check_func  mmap
4488 check_func  mprotect
4489 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4490 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4491 check_func  sched_getaffinity
4492 check_func  setrlimit
4493 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4494 check_func  strerror_r
4495 check_func  sysconf
4496 check_func  sysctl
4497 check_func  usleep
4498
4499 check_func_headers conio.h kbhit
4500 check_func_headers io.h setmode
4501 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4502 check_func_headers stdlib.h getenv
4503
4504 check_func_headers windows.h GetProcessAffinityMask
4505 check_func_headers windows.h GetProcessTimes
4506 check_func_headers windows.h GetSystemTimeAsFileTime
4507 check_func_headers windows.h MapViewOfFile
4508 check_func_headers windows.h PeekNamedPipe
4509 check_func_headers windows.h SetConsoleTextAttribute
4510 check_func_headers windows.h Sleep
4511 check_func_headers windows.h VirtualAlloc
4512 check_func_headers glob.h glob
4513 enabled xlib &&
4514     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4515
4516 check_header cl/cl.h
4517 check_header direct.h
4518 check_header dlfcn.h
4519 check_header dxva.h
4520 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4521 check_header io.h
4522 check_header libcrystalhd/libcrystalhd_if.h
4523 check_header mach/mach_time.h
4524 check_header malloc.h
4525 check_header poll.h
4526 check_header sys/mman.h
4527 check_header sys/param.h
4528 check_header sys/resource.h
4529 check_header sys/select.h
4530 check_header sys/time.h
4531 check_header sys/un.h
4532 check_header termios.h
4533 check_header unistd.h
4534 check_header vdpau/vdpau.h
4535 check_header vdpau/vdpau_x11.h
4536 check_header VideoDecodeAcceleration/VDADecoder.h
4537 check_header windows.h
4538 check_header X11/extensions/XvMClib.h
4539 check_header asm/types.h
4540
4541 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4542 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4543 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4544
4545 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4546
4547 if ! disabled w32threads && ! enabled pthreads; then
4548     check_func_headers "windows.h process.h" _beginthreadex &&
4549         enable w32threads || disable w32threads
4550 fi
4551
4552 # check for some common methods of building with pthread support
4553 # do this before the optional library checks as some of them require pthreads
4554 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4555     enable pthreads
4556     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4557         add_cflags -pthread
4558         add_extralibs -pthread
4559     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4560         add_cflags -pthreads
4561         add_extralibs -pthreads
4562     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4563         add_extralibs -lpthreadGC2
4564     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4565         :
4566     elif ! check_func pthread_join && ! check_func pthread_create; then
4567         disable pthreads
4568     fi
4569     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4570 fi
4571
4572
4573 if enabled pthreads; then
4574   check_func pthread_cancel
4575 fi
4576
4577 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4578 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4579
4580 check_lib math.h sin -lm && LIBM="-lm"
4581 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4582
4583 atan2f_args=2
4584 ldexpf_args=2
4585 powf_args=2
4586
4587 for func in $MATH_FUNCS; do
4588     eval check_mathfunc $func \${${func}_args:-1}
4589 done
4590
4591 # these are off by default, so fail if requested and not available
4592 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4593 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4594                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4595                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4596 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4597 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4598 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4599 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4600 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4601 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4602 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4603 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4604 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4605                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4606                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4607 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4608 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4609 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4610 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
4611 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4612 enabled fontconfig        && enable libfontconfig
4613 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4614 enabled libfreetype       && require_libfreetype
4615 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4616 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4617                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4618                                done || die "ERROR: libgsm not found"; }
4619 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4620 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4621 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4622 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4623 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4624 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4625 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4626 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4627                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4628                                die "ERROR: libopenjpeg not found"; }
4629 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4630 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4631 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4632 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4633 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4634 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4635 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4636 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4637 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4638 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4639     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4640     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4641 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4642 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4643                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4644                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4645 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4646 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4647 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4648 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4649 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4650 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4651 enabled libvpx            && {
4652     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4653                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4654     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
4655                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4656     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4657     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_SVC" -lvpx || disable libvpx_vp9_encoder; } }
4658 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4659 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4660 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4661                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4662                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4663 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4664                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4665                                die "ERROR: libx265 version must be >= 13."; }
4666 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4667 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4668 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4669 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4670 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4671                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4672                                die "ERROR: openal not found"; } &&
4673                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4674                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4675 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4676                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4677                                die "ERROR: opencl not found"; } &&
4678                              { ! enabled_any w32threads os2threads ||
4679                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4680                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4681                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4682                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4683 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4684                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4685                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4686                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4687                                die "ERROR: opengl not found."
4688                              }
4689 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4690                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4691                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4692                                die "ERROR: openssl not found"; }
4693 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4694
4695 if enabled gnutls; then
4696     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4697     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4698 fi
4699
4700 # libdc1394 check
4701 if enabled libdc1394; then
4702     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4703         enable libdc1394_2; } ||
4704     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4705         enable libdc1394_1; } ||
4706     die "ERROR: No version of libdc1394 found "
4707 fi
4708
4709 SDL_CONFIG="${cross_prefix}sdl-config"
4710 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4711     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4712     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4713     enable sdl
4714 else
4715   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4716     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4717     sdl_libs=$("${SDL_CONFIG}" --libs)
4718     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4719     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4720     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4721     enable sdl
4722   fi
4723 fi
4724 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4725
4726 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4727 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4728 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4729 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4730 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4731
4732 check_header linux/fb.h
4733 check_header linux/videodev.h
4734 check_header linux/videodev2.h
4735 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4736
4737 check_header sys/videoio.h
4738
4739 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4740 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4741 # w32api 3.12 had it defined wrong
4742 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4743
4744 check_type "dshow.h" IBaseFilter
4745
4746 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4747 { check_header dev/bktr/ioctl_meteor.h &&
4748   check_header dev/bktr/ioctl_bt848.h; } ||
4749 { check_header machine/ioctl_meteor.h &&
4750   check_header machine/ioctl_bt848.h; } ||
4751 { check_header dev/video/meteor/ioctl_meteor.h &&
4752   check_header dev/video/bktr/ioctl_bt848.h; } ||
4753 check_header dev/ic/bt8xx.h
4754
4755 check_header sndio.h
4756 if check_struct sys/soundcard.h audio_buf_info bytes; then
4757     enable_safe sys/soundcard.h
4758 else
4759     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4760     #include <sys/soundcard.h>
4761     audio_buf_info abc;
4762 EOF
4763 fi
4764 check_header soundcard.h
4765