configure: allow overriding ranlib
[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 "
1563
1564 BUILTIN_LIST="
1565     atomic_cas_ptr
1566     machine_rw_barrier
1567     MemoryBarrier
1568     mm_empty
1569     rdtsc
1570     sarestart
1571     sync_val_compare_and_swap
1572 "
1573 HAVE_LIST_CMDLINE="
1574     inline_asm
1575     symver
1576     yasm
1577 "
1578
1579 HAVE_LIST_PUB="
1580     bigendian
1581     fast_unaligned
1582     incompatible_libav_abi
1583 "
1584
1585 HEADERS_LIST="
1586     alsa_asoundlib_h
1587     altivec_h
1588     arpa_inet_h
1589     asm_types_h
1590     cdio_paranoia_h
1591     cdio_paranoia_paranoia_h
1592     CL_cl_h
1593     dev_bktr_ioctl_bt848_h
1594     dev_bktr_ioctl_meteor_h
1595     dev_ic_bt8xx_h
1596     dev_video_bktr_ioctl_bt848_h
1597     dev_video_meteor_ioctl_meteor_h
1598     direct_h
1599     dlfcn_h
1600     dxva_h
1601     ES2_gl_h
1602     gsm_h
1603     io_h
1604     mach_mach_time_h
1605     machine_ioctl_bt848_h
1606     machine_ioctl_meteor_h
1607     malloc_h
1608     openjpeg_1_5_openjpeg_h
1609     OpenGL_gl3_h
1610     poll_h
1611     sndio_h
1612     soundcard_h
1613     sys_mman_h
1614     sys_param_h
1615     sys_resource_h
1616     sys_select_h
1617     sys_soundcard_h
1618     sys_time_h
1619     sys_un_h
1620     sys_videoio_h
1621     termios_h
1622     unistd_h
1623     windows_h
1624     winsock2_h
1625 "
1626
1627 MATH_FUNCS="
1628     atanf
1629     atan2f
1630     cbrt
1631     cbrtf
1632     cosf
1633     exp2
1634     exp2f
1635     expf
1636     isinf
1637     isnan
1638     ldexpf
1639     llrint
1640     llrintf
1641     log2
1642     log2f
1643     log10f
1644     lrint
1645     lrintf
1646     powf
1647     rint
1648     round
1649     roundf
1650     sinf
1651     trunc
1652     truncf
1653 "
1654
1655 SYSTEM_FUNCS="
1656     access
1657     aligned_malloc
1658     clock_gettime
1659     closesocket
1660     CommandLineToArgvW
1661     CryptGenRandom
1662     dlopen
1663     fcntl
1664     flt_lim
1665     fork
1666     getaddrinfo
1667     gethrtime
1668     getopt
1669     GetProcessAffinityMask
1670     GetProcessMemoryInfo
1671     GetProcessTimes
1672     getrusage
1673     getservbyport
1674     GetSystemTimeAsFileTime
1675     gettimeofday
1676     glob
1677     glXGetProcAddress
1678     inet_aton
1679     isatty
1680     jack_port_get_latency_range
1681     kbhit
1682     localtime_r
1683     lzo1x_999_compress
1684     mach_absolute_time
1685     MapViewOfFile
1686     memalign
1687     mkstemp
1688     mmap
1689     mprotect
1690     nanosleep
1691     PeekNamedPipe
1692     posix_memalign
1693     pthread_cancel
1694     sched_getaffinity
1695     SetConsoleTextAttribute
1696     setmode
1697     setrlimit
1698     Sleep
1699     strerror_r
1700     sysconf
1701     sysctl
1702     usleep
1703     VirtualAlloc
1704     wglGetProcAddress
1705 "
1706
1707 TOOLCHAIN_FEATURES="
1708     asm_mod_q
1709     attribute_may_alias
1710     attribute_packed
1711     ebp_available
1712     ebx_available
1713     gnu_as
1714     gnu_windres
1715     ibm_asm
1716     inline_asm_labels
1717     inline_asm_nonlocal_labels
1718     inline_asm_direct_symbol_refs
1719     pragma_deprecated
1720     rsync_contimeout
1721     symver_asm_label
1722     symver_gnu_asm
1723     vfp_args
1724     xform_asm
1725     xmm_clobbers
1726 "
1727
1728 TYPES_LIST="
1729     socklen_t
1730     struct_addrinfo
1731     struct_group_source_req
1732     struct_ip_mreq_source
1733     struct_ipv6_mreq
1734     struct_pollfd
1735     struct_rusage_ru_maxrss
1736     struct_sctp_event_subscribe
1737     struct_sockaddr_in6
1738     struct_sockaddr_sa_len
1739     struct_sockaddr_storage
1740     struct_stat_st_mtim_tv_nsec
1741     struct_v4l2_frmivalenum_discrete
1742 "
1743
1744 HAVE_LIST="
1745     $ARCH_EXT_LIST
1746     $(add_suffix _external $ARCH_EXT_LIST)
1747     $(add_suffix _inline   $ARCH_EXT_LIST)
1748     $ARCH_FEATURES
1749     $ATOMICS_LIST
1750     $BUILTIN_LIST
1751     $HAVE_LIST_CMDLINE
1752     $HAVE_LIST_PUB
1753     $HEADERS_LIST
1754     $MATH_FUNCS
1755     $SYSTEM_FUNCS
1756     $THREADS_LIST
1757     $TOOLCHAIN_FEATURES
1758     $TYPES_LIST
1759     atomics_native
1760     dos_paths
1761     libc_msvcrt
1762     libdc1394_1
1763     libdc1394_2
1764     makeinfo
1765     perl
1766     pod2man
1767     sdl
1768     texi2html
1769     threads
1770     vdpau_x11
1771     xlib
1772 "
1773
1774 # options emitted with CONFIG_ prefix but not available on the command line
1775 CONFIG_EXTRA="
1776     aandcttables
1777     ac3dsp
1778     audio_frame_queue
1779     cabac
1780     dsputil
1781     exif
1782     frame_thread_encoder
1783     gcrypt
1784     golomb
1785     gplv3
1786     h263dsp
1787     h264chroma
1788     h264dsp
1789     h264pred
1790     h264qpel
1791     hpeldsp
1792     huffman
1793     intrax8
1794     lgplv3
1795     llviddsp
1796     lpc
1797     mpegaudio
1798     mpegaudiodsp
1799     mpegvideo
1800     mpegvideoenc
1801     nettle
1802     rangecoder
1803     riffdec
1804     riffenc
1805     rtpdec
1806     rtpenc_chain
1807     sinewin
1808     tpeldsp
1809     videodsp
1810     vp3dsp
1811 "
1812
1813 CMDLINE_SELECT="
1814     $ARCH_EXT_LIST
1815     $CONFIG_LIST
1816     $HAVE_LIST_CMDLINE
1817     $THREADS_LIST
1818     asm
1819     cross_compile
1820     debug
1821     extra_warnings
1822     logging
1823     lto
1824     optimizations
1825     rpath
1826     stripping
1827 "
1828
1829 PATHS_LIST="
1830     bindir
1831     datadir
1832     docdir
1833     incdir
1834     libdir
1835     mandir
1836     prefix
1837     shlibdir
1838 "
1839
1840 CMDLINE_SET="
1841     $PATHS_LIST
1842     ar
1843     arch
1844     as
1845     assert_level
1846     build_suffix
1847     cc
1848     cpu
1849     cross_prefix
1850     cxx
1851     dep_cc
1852     extra_version
1853     gas
1854     host_cc
1855     host_cflags
1856     host_ld
1857     host_ldflags
1858     host_libs
1859     host_os
1860     install
1861     ld
1862     logfile
1863     malloc_prefix
1864     nm
1865     optflags
1866     pkg_config
1867     pkg_config_flags
1868     progs_suffix
1869     random_seed
1870     ranlib
1871     samples
1872     strip
1873     sysinclude
1874     sysroot
1875     target_exec
1876     target_os
1877     target_path
1878     target_samples
1879     tempprefix
1880     toolchain
1881     valgrind
1882     yasmexe
1883 "
1884
1885 CMDLINE_APPEND="
1886     extra_cflags
1887     extra_cxxflags
1888     host_cppflags
1889 "
1890
1891 # code dependency declarations
1892
1893 # architecture extensions
1894
1895 armv5te_deps="arm"
1896 armv6_deps="arm"
1897 armv6t2_deps="arm"
1898 armv8_deps="aarch64"
1899 neon_deps_any="aarch64 arm"
1900 vfp_deps_any="aarch64 arm"
1901 vfpv3_deps="vfp"
1902
1903 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1904
1905 mipsfpu_deps="mips"
1906 mips32r2_deps="mips"
1907 mipsdspr1_deps="mips"
1908 mipsdspr2_deps="mips"
1909
1910 altivec_deps="ppc"
1911 ppc4xx_deps="ppc"
1912
1913 cpunop_deps="i686"
1914 x86_64_select="i686"
1915 x86_64_suggest="fast_cmov"
1916
1917 amd3dnow_deps="mmx"
1918 amd3dnowext_deps="amd3dnow"
1919 i686_deps="x86"
1920 mmx_deps="x86"
1921 mmxext_deps="mmx"
1922 sse_deps="mmxext"
1923 sse2_deps="sse"
1924 sse3_deps="sse2"
1925 ssse3_deps="sse3"
1926 sse4_deps="ssse3"
1927 sse42_deps="sse4"
1928 avx_deps="sse42"
1929 xop_deps="avx"
1930 fma3_deps="avx"
1931 fma4_deps="avx"
1932 avx2_deps="avx"
1933
1934 mmx_external_deps="yasm"
1935 mmx_inline_deps="inline_asm"
1936 mmx_suggest="mmx_external mmx_inline"
1937
1938 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1939     eval dep=\$${ext}_deps
1940     eval ${ext}_external_deps='"${dep}_external"'
1941     eval ${ext}_inline_deps='"${dep}_inline"'
1942     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1943 done
1944
1945 aligned_stack_if_any="aarch64 ppc x86"
1946 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1947 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1948 fast_unaligned_if_any="aarch64 ppc x86"
1949
1950 need_memalign="altivec neon sse"
1951
1952 # system capabilities
1953 log2_deps="!libc_msvcrt"
1954
1955 symver_if_any="symver_asm_label symver_gnu_asm"
1956
1957 # threading support
1958 atomics_gcc_if="sync_val_compare_and_swap"
1959 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1960 atomics_win32_if="MemoryBarrier"
1961 atomics_native_if_any="$ATOMICS_LIST"
1962 w32threads_deps="atomics_native"
1963 threads_if_any="$THREADS_LIST"
1964
1965 # subsystems
1966 dct_select="rdft"
1967 error_resilience_select="dsputil"
1968 frame_thread_encoder_deps="encoders threads"
1969 mdct_select="fft"
1970 rdft_select="fft"
1971 mpegaudio_select="mpegaudiodsp"
1972 mpegaudiodsp_select="dct"
1973 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1974 mpegvideoenc_select="dsputil mpegvideo"
1975
1976 # decoders / encoders
1977 aac_decoder_select="mdct sinewin"
1978 aac_encoder_select="audio_frame_queue mdct sinewin"
1979 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1980 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1981 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
1982 ac3_encoder_select="mdct ac3dsp dsputil"
1983 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1984 aic_decoder_select="dsputil golomb"
1985 alac_encoder_select="lpc"
1986 als_decoder_select="dsputil"
1987 amrnb_decoder_select="lsp"
1988 amrwb_decoder_select="lsp"
1989 amv_decoder_select="sp5x_decoder exif"
1990 amv_encoder_select="aandcttables"
1991 ape_decoder_select="dsputil"
1992 asv1_decoder_select="dsputil"
1993 asv1_encoder_select="dsputil"
1994 asv2_decoder_select="dsputil"
1995 asv2_encoder_select="dsputil"
1996 atrac1_decoder_select="mdct sinewin"
1997 atrac3_decoder_select="mdct"
1998 atrac3p_decoder_select="mdct sinewin"
1999 avrn_decoder_select="exif"
2000 bink_decoder_select="dsputil hpeldsp"
2001 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2002 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2003 cavs_decoder_select="dsputil golomb h264chroma videodsp"
2004 cllc_decoder_select="dsputil"
2005 comfortnoise_encoder_select="lpc"
2006 cook_decoder_select="dsputil mdct sinewin"
2007 cscd_decoder_select="lzo"
2008 cscd_decoder_suggest="zlib"
2009 dca_decoder_select="mdct"
2010 dirac_decoder_select="dsputil dwt golomb videodsp"
2011 dnxhd_decoder_select="dsputil"
2012 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2013 dvvideo_decoder_select="dsputil"
2014 dvvideo_encoder_select="dsputil"
2015 dxa_decoder_select="zlib"
2016 eac3_decoder_select="ac3_decoder"
2017 eac3_encoder_select="ac3_encoder"
2018 eamad_decoder_select="aandcttables dsputil mpegvideo"
2019 eatgq_decoder_select="aandcttables"
2020 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2021 exr_decoder_select="zlib"
2022 ffv1_decoder_select="golomb rangecoder"
2023 ffv1_encoder_select="rangecoder"
2024 ffvhuff_decoder_select="huffyuv_decoder"
2025 ffvhuff_encoder_select="huffyuv_encoder"
2026 fic_decoder_select="golomb"
2027 flac_decoder_select="golomb"
2028 flac_encoder_select="dsputil golomb lpc"
2029 flashsv_decoder_select="zlib"
2030 flashsv_encoder_select="zlib"
2031 flashsv2_encoder_select="zlib"
2032 flashsv2_decoder_select="zlib"
2033 flv_decoder_select="h263_decoder"
2034 flv_encoder_select="h263_encoder"
2035 fourxm_decoder_select="dsputil"
2036 fraps_decoder_select="dsputil huffman"
2037 g2m_decoder_select="dsputil zlib"
2038 g729_decoder_select="dsputil"
2039 h261_decoder_select="error_resilience mpegvideo"
2040 h261_encoder_select="aandcttables mpegvideoenc"
2041 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2042 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2043 h263i_decoder_select="h263_decoder"
2044 h263p_encoder_select="h263_encoder"
2045 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2046 h264_decoder_suggest="error_resilience"
2047 hevc_decoder_select="cabac dsputil golomb videodsp"
2048 huffyuv_decoder_select="dsputil llviddsp"
2049 huffyuv_encoder_select="dsputil huffman llviddsp"
2050 iac_decoder_select="imc_decoder"
2051 imc_decoder_select="dsputil fft mdct sinewin"
2052 indeo3_decoder_select="hpeldsp"
2053 interplay_video_decoder_select="hpeldsp"
2054 jpegls_decoder_select="golomb mjpeg_decoder"
2055 jpegls_encoder_select="golomb"
2056 jv_decoder_select="dsputil"
2057 lagarith_decoder_select="dsputil"
2058 ljpeg_encoder_select="aandcttables mpegvideoenc"
2059 loco_decoder_select="golomb"
2060 mdec_decoder_select="dsputil error_resilience mpegvideo"
2061 metasound_decoder_select="lsp mdct sinewin"
2062 mimic_decoder_select="dsputil hpeldsp"
2063 mjpeg_decoder_select="dsputil hpeldsp exif"
2064 mjpeg_encoder_select="aandcttables mpegvideoenc"
2065 mjpegb_decoder_select="mjpeg_decoder"
2066 mlp_decoder_select="mlp_parser"
2067 motionpixels_decoder_select="dsputil"
2068 mp1_decoder_select="mpegaudio"
2069 mp1float_decoder_select="mpegaudio"
2070 mp2_decoder_select="mpegaudio"
2071 mp2float_decoder_select="mpegaudio"
2072 mp3_decoder_select="mpegaudio"
2073 mp3adu_decoder_select="mpegaudio"
2074 mp3adufloat_decoder_select="mpegaudio"
2075 mp3float_decoder_select="mpegaudio"
2076 mp3on4_decoder_select="mpegaudio"
2077 mp3on4float_decoder_select="mpegaudio"
2078 mpc7_decoder_select="dsputil mpegaudiodsp"
2079 mpc8_decoder_select="mpegaudiodsp"
2080 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2081 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2082 mpeg1video_decoder_select="error_resilience mpegvideo"
2083 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2084 mpeg2video_decoder_select="error_resilience mpegvideo"
2085 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2086 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2087 mpeg4_encoder_select="h263_encoder"
2088 msmpeg4v1_decoder_select="h263_decoder"
2089 msmpeg4v2_decoder_select="h263_decoder"
2090 msmpeg4v2_encoder_select="h263_encoder"
2091 msmpeg4v3_decoder_select="h263_decoder"
2092 msmpeg4v3_encoder_select="h263_encoder"
2093 mss2_decoder_select="error_resilience vc1_decoder"
2094 mxpeg_decoder_select="mjpeg_decoder"
2095 nellymoser_decoder_select="mdct sinewin"
2096 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2097 nuv_decoder_select="dsputil lzo"
2098 on2avc_decoder_select="mdct"
2099 png_decoder_select="zlib"
2100 png_encoder_select="dsputil zlib"
2101 prores_decoder_select="dsputil"
2102 prores_encoder_select="dsputil"
2103 qcelp_decoder_select="lsp"
2104 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2105 ra_144_encoder_select="audio_frame_queue lpc"
2106 ralf_decoder_select="golomb"
2107 rawvideo_decoder_select="dsputil"
2108 rtjpeg_decoder_select="dsputil"
2109 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2110 rv10_encoder_select="h263_encoder"
2111 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2112 rv20_encoder_select="h263_encoder"
2113 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2114 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2115 shorten_decoder_select="golomb"
2116 sipr_decoder_select="lsp"
2117 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2118 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2119 sonic_decoder_select="golomb rangecoder"
2120 sonic_encoder_select="golomb rangecoder"
2121 sonic_ls_encoder_select="golomb"
2122 sp5x_decoder_select="mjpeg_decoder"
2123 svq1_decoder_select="hpeldsp"
2124 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2125 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2126 svq3_decoder_suggest="zlib"
2127 tak_decoder_select="dsputil"
2128 theora_decoder_select="vp3_decoder"
2129 thp_decoder_select="mjpeg_decoder"
2130 tiff_decoder_suggest="zlib"
2131 tiff_encoder_suggest="zlib"
2132 truehd_decoder_select="mlp_parser"
2133 truemotion2_decoder_select="dsputil"
2134 truespeech_decoder_select="dsputil"
2135 tscc_decoder_select="zlib"
2136 twinvq_decoder_select="mdct lsp sinewin"
2137 utvideo_decoder_select="dsputil"
2138 utvideo_encoder_select="dsputil huffman"
2139 vble_decoder_select="dsputil"
2140 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2141 vc1image_decoder_select="vc1_decoder"
2142 vorbis_decoder_select="mdct"
2143 vorbis_encoder_select="mdct"
2144 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2145 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2146 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2147 vp6a_decoder_select="vp6_decoder"
2148 vp6f_decoder_select="vp6_decoder"
2149 vp7_decoder_select="h264pred videodsp"
2150 vp8_decoder_select="h264pred videodsp"
2151 vp9_decoder_select="videodsp"
2152 webp_decoder_select="vp8_decoder"
2153 wmapro_decoder_select="mdct sinewin"
2154 wmav1_decoder_select="mdct sinewin"
2155 wmav1_encoder_select="mdct sinewin"
2156 wmav2_decoder_select="mdct sinewin"
2157 wmav2_encoder_select="mdct sinewin"
2158 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2159 wmv1_decoder_select="h263_decoder"
2160 wmv1_encoder_select="h263_encoder"
2161 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2162 wmv2_encoder_select="h263_encoder"
2163 wmv3_decoder_select="vc1_decoder"
2164 wmv3image_decoder_select="wmv3_decoder"
2165 zerocodec_decoder_select="zlib"
2166 zlib_decoder_select="zlib"
2167 zlib_encoder_select="zlib"
2168 zmbv_decoder_select="zlib"
2169 zmbv_encoder_select="zlib"
2170
2171 # hardware accelerators
2172 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2173 dxva2_deps="dxva2api_h"
2174 vaapi_deps="va_va_h"
2175 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2176 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2177 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2178 xvmc_deps="X11_extensions_XvMClib_h"
2179
2180 h263_vaapi_hwaccel_deps="vaapi"
2181 h263_vaapi_hwaccel_select="h263_decoder"
2182 h263_vdpau_hwaccel_deps="vdpau"
2183 h263_vdpau_hwaccel_select="h263_decoder"
2184 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2185 h264_dxva2_hwaccel_deps="dxva2"
2186 h264_dxva2_hwaccel_select="h264_decoder"
2187 h264_vaapi_hwaccel_deps="vaapi"
2188 h264_vaapi_hwaccel_select="h264_decoder"
2189 h264_vda_decoder_deps="vda"
2190 h264_vda_decoder_select="h264_decoder"
2191 h264_vda_hwaccel_deps="vda"
2192 h264_vda_hwaccel_select="h264_decoder"
2193 h264_vdpau_decoder_deps="vdpau"
2194 h264_vdpau_decoder_select="h264_decoder"
2195 h264_vdpau_hwaccel_deps="vdpau"
2196 h264_vdpau_hwaccel_select="h264_decoder"
2197 mpeg_vdpau_decoder_deps="vdpau"
2198 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2199 mpeg_xvmc_hwaccel_deps="xvmc"
2200 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2201 mpeg1_vdpau_decoder_deps="vdpau"
2202 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2203 mpeg1_vdpau_hwaccel_deps="vdpau"
2204 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2205 mpeg1_xvmc_hwaccel_deps="xvmc"
2206 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2207 mpeg2_crystalhd_decoder_select="crystalhd"
2208 mpeg2_dxva2_hwaccel_deps="dxva2"
2209 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2210 mpeg2_vaapi_hwaccel_deps="vaapi"
2211 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2212 mpeg2_vdpau_hwaccel_deps="vdpau"
2213 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2214 mpeg2_xvmc_hwaccel_deps="xvmc"
2215 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2216 mpeg4_crystalhd_decoder_select="crystalhd"
2217 mpeg4_vaapi_hwaccel_deps="vaapi"
2218 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2219 mpeg4_vdpau_decoder_deps="vdpau"
2220 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2221 mpeg4_vdpau_hwaccel_deps="vdpau"
2222 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2223 msmpeg4_crystalhd_decoder_select="crystalhd"
2224 vc1_crystalhd_decoder_select="crystalhd"
2225 vc1_dxva2_hwaccel_deps="dxva2"
2226 vc1_dxva2_hwaccel_select="vc1_decoder"
2227 vc1_vaapi_hwaccel_deps="vaapi"
2228 vc1_vaapi_hwaccel_select="vc1_decoder"
2229 vc1_vdpau_decoder_deps="vdpau"
2230 vc1_vdpau_decoder_select="vc1_decoder"
2231 vc1_vdpau_hwaccel_deps="vdpau"
2232 vc1_vdpau_hwaccel_select="vc1_decoder"
2233 wmv3_crystalhd_decoder_select="crystalhd"
2234 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2235 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2236 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2237 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2238
2239 # parsers
2240 h264_parser_select="h264_decoder"
2241 hevc_parser_select="hevc_decoder"
2242 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2243 mpegvideo_parser_select="error_resilience mpegvideo"
2244 vc1_parser_select="mpegvideo"
2245
2246 # external libraries
2247 libaacplus_encoder_deps="libaacplus"
2248 libcelt_decoder_deps="libcelt"
2249 libfaac_encoder_deps="libfaac"
2250 libfaac_encoder_select="audio_frame_queue"
2251 libfdk_aac_decoder_deps="libfdk_aac"
2252 libfdk_aac_encoder_deps="libfdk_aac"
2253 libfdk_aac_encoder_select="audio_frame_queue"
2254 libgme_demuxer_deps="libgme"
2255 libgsm_decoder_deps="libgsm"
2256 libgsm_encoder_deps="libgsm"
2257 libgsm_ms_decoder_deps="libgsm"
2258 libgsm_ms_encoder_deps="libgsm"
2259 libilbc_decoder_deps="libilbc"
2260 libilbc_encoder_deps="libilbc"
2261 libmodplug_demuxer_deps="libmodplug"
2262 libmp3lame_encoder_deps="libmp3lame"
2263 libmp3lame_encoder_select="audio_frame_queue"
2264 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2265 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2266 libopencore_amrnb_encoder_select="audio_frame_queue"
2267 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2268 libopenjpeg_decoder_deps="libopenjpeg"
2269 libopenjpeg_encoder_deps="libopenjpeg"
2270 libopus_decoder_deps="libopus"
2271 libopus_encoder_deps="libopus"
2272 libopus_encoder_select="audio_frame_queue"
2273 libquvi_demuxer_deps="libquvi"
2274 libschroedinger_decoder_deps="libschroedinger"
2275 libschroedinger_encoder_deps="libschroedinger"
2276 libshine_encoder_deps="libshine"
2277 libshine_encoder_select="audio_frame_queue"
2278 libspeex_decoder_deps="libspeex"
2279 libspeex_encoder_deps="libspeex"
2280 libspeex_encoder_select="audio_frame_queue"
2281 libstagefright_h264_decoder_deps="libstagefright_h264"
2282 libtheora_encoder_deps="libtheora"
2283 libtwolame_encoder_deps="libtwolame"
2284 libvo_aacenc_encoder_deps="libvo_aacenc"
2285 libvo_aacenc_encoder_select="audio_frame_queue"
2286 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2287 libvorbis_decoder_deps="libvorbis"
2288 libvorbis_encoder_deps="libvorbis"
2289 libvorbis_encoder_select="audio_frame_queue"
2290 libvpx_vp8_decoder_deps="libvpx"
2291 libvpx_vp8_encoder_deps="libvpx"
2292 libvpx_vp9_decoder_deps="libvpx"
2293 libvpx_vp9_encoder_deps="libvpx"
2294 libwavpack_encoder_deps="libwavpack"
2295 libwebp_encoder_deps="libwebp"
2296 libx264_encoder_deps="libx264"
2297 libx264rgb_encoder_deps="libx264"
2298 libx265_encoder_deps="libx265"
2299 libxavs_encoder_deps="libxavs"
2300 libxvid_encoder_deps="libxvid"
2301 libutvideo_decoder_deps="libutvideo"
2302 libutvideo_encoder_deps="libutvideo"
2303 libzvbi_teletext_decoder_deps="libzvbi"
2304
2305 # demuxers / muxers
2306 ac3_demuxer_select="ac3_parser"
2307 asf_demuxer_select="riffdec"
2308 asf_muxer_select="riffenc"
2309 asf_stream_muxer_select="asf_muxer"
2310 avi_demuxer_select="riffdec exif"
2311 avi_muxer_select="riffenc"
2312 avisynth_demuxer_deps="avisynth"
2313 avisynth_demuxer_select="riffdec"
2314 caf_demuxer_select="riffdec"
2315 dirac_demuxer_select="dirac_parser"
2316 dts_demuxer_select="dca_parser"
2317 dtshd_demuxer_select="dca_parser"
2318 dxa_demuxer_select="riffdec"
2319 eac3_demuxer_select="ac3_parser"
2320 f4v_muxer_select="mov_muxer"
2321 flac_demuxer_select="flac_parser"
2322 hds_muxer_select="flv_muxer"
2323 hls_muxer_select="mpegts_muxer"
2324 image2_alias_pix_demuxer_select="image2_demuxer"
2325 image2_brender_pix_demuxer_select="image2_demuxer"
2326 ipod_muxer_select="mov_muxer"
2327 ismv_muxer_select="mov_muxer"
2328 libnut_demuxer_deps="libnut"
2329 libnut_muxer_deps="libnut"
2330 matroska_audio_muxer_select="matroska_muxer"
2331 matroska_demuxer_select="riffdec"
2332 matroska_demuxer_suggest="bzlib lzo zlib"
2333 matroska_muxer_select="riffenc"
2334 mmf_muxer_select="riffenc"
2335 mov_demuxer_select="riffdec"
2336 mov_demuxer_suggest="zlib"
2337 mov_muxer_select="riffenc rtpenc_chain"
2338 mp3_demuxer_select="mpegaudio_parser"
2339 mp4_muxer_select="mov_muxer"
2340 mpegts_muxer_select="adts_muxer latm_muxer"
2341 mpegtsraw_demuxer_select="mpegts_demuxer"
2342 mxf_d10_muxer_select="mxf_muxer"
2343 nut_muxer_select="riffenc"
2344 nuv_demuxer_select="riffdec"
2345 ogg_demuxer_select="golomb"
2346 psp_muxer_select="mov_muxer"
2347 rtp_demuxer_select="sdp_demuxer"
2348 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2349 rtsp_demuxer_select="http_protocol rtpdec"
2350 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2351 sap_demuxer_select="sdp_demuxer"
2352 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2353 sdp_demuxer_select="rtpdec"
2354 smoothstreaming_muxer_select="ismv_muxer"
2355 spdif_muxer_select="aac_parser"
2356 tak_demuxer_select="tak_parser"
2357 tg2_muxer_select="mov_muxer"
2358 tgp_muxer_select="mov_muxer"
2359 vobsub_demuxer_select="mpegps_demuxer"
2360 w64_demuxer_select="wav_demuxer"
2361 w64_muxer_select="wav_muxer"
2362 wav_demuxer_select="riffdec"
2363 wav_muxer_select="riffenc"
2364 webm_muxer_select="riffenc"
2365 wtv_demuxer_select="riffdec"
2366 wtv_muxer_select="riffenc"
2367 xmv_demuxer_select="riffdec"
2368 xwma_demuxer_select="riffdec"
2369
2370 # indevs / outdevs
2371 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2372 alsa_outdev_deps="alsa_asoundlib_h"
2373 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2374 avfoundation_indev_select="avfoundation"
2375 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2376 caca_outdev_deps="libcaca"
2377 decklink_outdev_deps="decklink pthreads"
2378 decklink_outdev_extralibs="-lstdc++"
2379 dshow_indev_deps="IBaseFilter"
2380 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2381 dv1394_indev_deps="dv1394"
2382 dv1394_indev_select="dv_demuxer"
2383 fbdev_indev_deps="linux_fb_h"
2384 fbdev_outdev_deps="linux_fb_h"
2385 gdigrab_indev_deps="CreateDIBSection"
2386 gdigrab_indev_extralibs="-lgdi32"
2387 gdigrab_indev_select="bmp_decoder"
2388 iec61883_indev_deps="libiec61883"
2389 jack_indev_deps="jack_jack_h sem_timedwait"
2390 lavfi_indev_deps="avfilter"
2391 libcdio_indev_deps="libcdio"
2392 libdc1394_indev_deps="libdc1394"
2393 libv4l2_indev_deps="libv4l2"
2394 openal_indev_deps="openal"
2395 opengl_outdev_deps="opengl"
2396 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2397 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2398 pulse_indev_deps="libpulse"
2399 pulse_outdev_deps="libpulse"
2400 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2401 qtkit_indev_select="qtkit"
2402 sdl_outdev_deps="sdl"
2403 sndio_indev_deps="sndio_h"
2404 sndio_outdev_deps="sndio_h"
2405 v4l_indev_deps="linux_videodev_h"
2406 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2407 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2408 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2409 vfwcap_indev_extralibs="-lavicap32"
2410 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2411 xv_outdev_extralibs="-lXv -lX11 -lXext"
2412 x11grab_indev_deps="x11grab"
2413
2414 # protocols
2415 bluray_protocol_deps="libbluray"
2416 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2417 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2418 ffrtmpcrypt_protocol_select="tcp_protocol"
2419 ffrtmphttp_protocol_deps="!librtmp_protocol"
2420 ffrtmphttp_protocol_select="http_protocol"
2421 ftp_protocol_select="tcp_protocol"
2422 gopher_protocol_select="network"
2423 http_protocol_select="tcp_protocol"
2424 httpproxy_protocol_select="tcp_protocol"
2425 https_protocol_select="tls_protocol"
2426 librtmp_protocol_deps="librtmp"
2427 librtmpe_protocol_deps="librtmp"
2428 librtmps_protocol_deps="librtmp"
2429 librtmpt_protocol_deps="librtmp"
2430 librtmpte_protocol_deps="librtmp"
2431 libssh_protocol_deps="libssh"
2432 mmsh_protocol_select="http_protocol"
2433 mmst_protocol_select="network"
2434 rtmp_protocol_deps="!librtmp_protocol"
2435 rtmp_protocol_select="tcp_protocol"
2436 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2437 rtmps_protocol_deps="!librtmp_protocol"
2438 rtmps_protocol_select="tls_protocol"
2439 rtmpt_protocol_select="ffrtmphttp_protocol"
2440 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2441 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2442 rtp_protocol_select="udp_protocol"
2443 sctp_protocol_deps="struct_sctp_event_subscribe"
2444 sctp_protocol_select="network"
2445 srtp_protocol_select="rtp_protocol"
2446 tcp_protocol_select="network"
2447 tls_protocol_deps_any="openssl gnutls"
2448 tls_protocol_select="tcp_protocol"
2449 udp_protocol_select="network"
2450 unix_protocol_deps="sys_un_h"
2451 unix_protocol_select="network"
2452
2453 # filters
2454 aconvert_filter_deps="swresample"
2455 amovie_filter_deps="avcodec avformat"
2456 aresample_filter_deps="swresample"
2457 ass_filter_deps="libass"
2458 asyncts_filter_deps="avresample"
2459 atempo_filter_deps="avcodec"
2460 atempo_filter_select="rdft"
2461 azmq_filter_deps="libzmq"
2462 blackframe_filter_deps="gpl"
2463 boxblur_filter_deps="gpl"
2464 colormatrix_filter_deps="gpl"
2465 cropdetect_filter_deps="gpl"
2466 dctdnoiz_filter_deps="avcodec"
2467 dctdnoiz_filter_select="dct"
2468 delogo_filter_deps="gpl"
2469 deshake_filter_deps="avcodec"
2470 deshake_filter_select="dsputil"
2471 drawtext_filter_deps="libfreetype"
2472 ebur128_filter_deps="gpl"
2473 flite_filter_deps="libflite"
2474 frei0r_filter_deps="frei0r dlopen"
2475 frei0r_filter_extralibs='$ldl'
2476 frei0r_src_filter_deps="frei0r dlopen"
2477 frei0r_src_filter_extralibs='$ldl'
2478 geq_filter_deps="gpl"
2479 histeq_filter_deps="gpl"
2480 hqdn3d_filter_deps="gpl"
2481 interlace_filter_deps="gpl"
2482 kerndeint_filter_deps="gpl"
2483 ladspa_filter_deps="ladspa dlopen"
2484 mcdeint_filter_deps="avcodec gpl"
2485 movie_filter_deps="avcodec avformat"
2486 mp_filter_deps="gpl avcodec swscale inline_asm"
2487 mpdecimate_filter_deps="gpl avcodec"
2488 mptestsrc_filter_deps="gpl"
2489 negate_filter_deps="lut_filter"
2490 perspective_filter_deps="gpl"
2491 ocv_filter_deps="libopencv"
2492 owdenoise_filter_deps="gpl"
2493 pan_filter_deps="swresample"
2494 phase_filter_deps="gpl"
2495 pp_filter_deps="gpl postproc"
2496 pullup_filter_deps="gpl"
2497 removelogo_filter_deps="avcodec avformat swscale"
2498 resample_filter_deps="avresample"
2499 sab_filter_deps="gpl swscale"
2500 scale_filter_deps="swscale"
2501 smartblur_filter_deps="gpl swscale"
2502 showspectrum_filter_deps="avcodec"
2503 showspectrum_filter_select="rdft"
2504 spp_filter_deps="gpl avcodec"
2505 spp_filter_select="fft"
2506 stereo3d_filter_deps="gpl"
2507 subtitles_filter_deps="avformat avcodec libass"
2508 super2xsai_filter_deps="gpl"
2509 tinterlace_filter_deps="gpl"
2510 vidstabdetect_filter_deps="libvidstab"
2511 vidstabtransform_filter_deps="libvidstab"
2512 pixfmts_super2xsai_test_deps="super2xsai_filter"
2513 tinterlace_merge_test_deps="tinterlace_filter"
2514 tinterlace_pad_test_deps="tinterlace_filter"
2515 zmq_filter_deps="libzmq"
2516
2517 # examples
2518 avio_reading="avformat avcodec avutil"
2519 avcodec_example_deps="avcodec avutil"
2520 demuxing_decoding_example_deps="avcodec avformat avutil"
2521 filter_audio_example_deps="avfilter avutil"
2522 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2523 filtering_video_example_deps="avfilter avcodec avformat avutil"
2524 metadata_example_deps="avformat avutil"
2525 muxing_example_deps="avcodec avformat avutil swscale"
2526 remuxing_example_deps="avcodec avformat avutil"
2527 resampling_audio_example_deps="avutil swresample"
2528 scaling_video_example_deps="avutil swscale"
2529 transcode_aac_example_deps="avcodec avformat swresample"
2530 transcoding_example_deps="avfilter avcodec avformat avutil"
2531
2532 # libraries
2533 avcodec_deps="avutil"
2534 avdevice_deps="avutil avcodec avformat"
2535 avfilter_deps="avutil"
2536 avformat_deps="avutil avcodec"
2537 avresample_deps="avutil"
2538 postproc_deps="avutil gpl"
2539 swscale_deps="avutil"
2540
2541 # programs
2542 ffmpeg_deps="avcodec avfilter avformat swresample"
2543 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2544                null_filter
2545                setpts_filter trim_filter"
2546 ffplay_deps="avcodec avformat swscale swresample sdl"
2547 ffplay_libs='$sdl_libs'
2548 ffplay_select="rdft crop_filter"
2549 ffprobe_deps="avcodec avformat"
2550 ffserver_deps="avformat fork sarestart"
2551 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2552
2553 # documentation
2554 podpages_deps="perl"
2555 manpages_deps="perl pod2man"
2556 htmlpages_deps="perl texi2html"
2557 txtpages_deps="perl makeinfo"
2558 doc_deps_any="manpages htmlpages podpages txtpages"
2559
2560 # default parameters
2561
2562 logfile="config.log"
2563
2564 # installation paths
2565 prefix_default="/usr/local"
2566 bindir_default='${prefix}/bin'
2567 datadir_default='${prefix}/share/ffmpeg'
2568 docdir_default='${prefix}/share/doc/ffmpeg'
2569 incdir_default='${prefix}/include'
2570 libdir_default='${prefix}/lib'
2571 mandir_default='${prefix}/share/man'
2572 shlibdir_default="$libdir_default"
2573
2574 # toolchain
2575 ar_default="ar"
2576 cc_default="gcc"
2577 cxx_default="g++"
2578 host_cc_default="gcc"
2579 cp_f="cp -f"
2580 install="install"
2581 ln_s="ln -s -f"
2582 nm_default="nm -g"
2583 objformat="elf"
2584 pkg_config_default=pkg-config
2585 ranlib_default="ranlib"
2586 strip_default="strip"
2587 yasmexe_default="yasm"
2588 windres_default="windres"
2589
2590 nogas=":"
2591
2592 # OS
2593 target_os_default=$(tolower $(uname -s))
2594 host_os=$target_os_default
2595
2596 # machine
2597 if test "$target_os_default" = aix; then
2598     arch_default=$(uname -p)
2599 else
2600     arch_default=$(uname -m)
2601 fi
2602 cpu="generic"
2603
2604 # configurable options
2605 enable $PROGRAM_LIST
2606 enable $DOCUMENT_LIST
2607 enable $EXAMPLE_LIST
2608 enable $(filter_out avresample $LIBRARY_LIST)
2609 enable stripping
2610
2611 enable asm
2612 enable debug
2613 enable doc
2614 enable optimizations
2615 enable runtime_cpudetect
2616 enable safe_bitstream_reader
2617 enable static
2618 enable swscale_alpha
2619
2620 # Enable hwaccels by default.
2621 enable dxva2 vaapi vda vdpau xvmc
2622 enable xlib
2623
2624 # build settings
2625 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2626 LIBPREF="lib"
2627 LIBSUF=".a"
2628 FULLNAME='$(NAME)$(BUILDSUF)'
2629 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2630 SLIBPREF="lib"
2631 SLIBSUF=".so"
2632 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2633 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2634 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2635 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2636 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2637 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2638
2639 asflags_filter=echo
2640 cflags_filter=echo
2641 ldflags_filter=echo
2642
2643 AS_C='-c'
2644 AS_O='-o $@'
2645 CC_C='-c'
2646 CC_E='-E -o $@'
2647 CC_O='-o $@'
2648 CXX_C='-c'
2649 CXX_O='-o $@'
2650 LD_O='-o $@'
2651 LD_LIB='-l%'
2652 LD_PATH='-L'
2653 HOSTCC_C='-c'
2654 HOSTCC_E='-E -o $@'
2655 HOSTCC_O='-o $@'
2656 HOSTLD_O='-o $@'
2657
2658 host_libs='-lm'
2659 host_cflags_filter=echo
2660 host_ldflags_filter=echo
2661
2662 target_path='$(CURDIR)'
2663
2664 # since the object filename is not given with the -MM flag, the compiler
2665 # is only able to print the basename, and we must add the path ourselves
2666 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2667 DEPFLAGS='-MM'
2668
2669 # find source path
2670 if test -f configure; then
2671     source_path=.
2672 else
2673     source_path=$(cd $(dirname "$0"); pwd)
2674     echo "$source_path" | grep -q '[[:blank:]]' &&
2675         die "Out of tree builds are impossible with whitespace in source path."
2676     test -e "$source_path/config.h" &&
2677         die "Out of tree builds are impossible with config.h in source dir."
2678 fi
2679
2680 for v in "$@"; do
2681     r=${v#*=}
2682     l=${v%"$r"}
2683     r=$(sh_quote "$r")
2684     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2685 done
2686
2687 find_things(){
2688     thing=$1
2689     pattern=$2
2690     file=$source_path/$3
2691     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2692 }
2693
2694 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2695 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2696 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2697 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2698 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2699 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2700 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2701 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2702 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2703 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2704 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2705
2706 ALL_COMPONENTS="
2707     $BSF_LIST
2708     $DECODER_LIST
2709     $DEMUXER_LIST
2710     $ENCODER_LIST
2711     $FILTER_LIST
2712     $HWACCEL_LIST
2713     $INDEV_LIST
2714     $MUXER_LIST
2715     $OUTDEV_LIST
2716     $PARSER_LIST
2717     $PROTOCOL_LIST
2718 "
2719
2720 for n in $COMPONENT_LIST; do
2721     v=$(toupper ${n%s})_LIST
2722     eval enable \$$v
2723     eval ${n}_if_any="\$$v"
2724 done
2725
2726 enable $ARCH_EXT_LIST
2727
2728 die_unknown(){
2729     echo "Unknown option \"$1\"."
2730     echo "See $0 --help for available options."
2731     exit 1
2732 }
2733
2734 print_3_columns() {
2735     cat | tr ' ' '\n' | sort | pr -r -3 -t
2736 }
2737
2738 show_list() {
2739     suffix=_$1
2740     shift
2741     echo $* | sed s/$suffix//g | print_3_columns
2742     exit 0
2743 }
2744
2745 rand_list(){
2746     IFS=', '
2747     set -- $*
2748     unset IFS
2749     for thing; do
2750         comp=${thing%:*}
2751         prob=${thing#$comp}
2752         prob=${prob#:}
2753         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2754         echo "prob ${prob:-0.5}"
2755         printf '%s\n' $comp
2756     done
2757 }
2758
2759 do_random(){
2760     action=$1
2761     shift
2762     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2763     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2764 }
2765
2766 for opt do
2767     optval="${opt#*=}"
2768     case "$opt" in
2769         --extra-ldflags=*)
2770             add_ldflags $optval
2771         ;;
2772         --extra-libs=*)
2773             add_extralibs $optval
2774         ;;
2775         --disable-devices)
2776             disable $INDEV_LIST $OUTDEV_LIST
2777         ;;
2778         --enable-debug=*)
2779             debuglevel="$optval"
2780         ;;
2781         --disable-programs)
2782             disable $PROGRAM_LIST
2783         ;;
2784         --disable-everything)
2785             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2786         ;;
2787         --disable-all)
2788             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2789             disable $LIBRARY_LIST $PROGRAM_LIST doc
2790         ;;
2791         --enable-random|--disable-random)
2792             action=${opt%%-random}
2793             do_random ${action#--} $COMPONENT_LIST
2794         ;;
2795         --enable-random=*|--disable-random=*)
2796             action=${opt%%-random=*}
2797             do_random ${action#--} $optval
2798         ;;
2799         --enable-*=*|--disable-*=*)
2800             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2801             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2802             eval list=\$$(toupper $thing)_LIST
2803             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2804             list=$(filter "$name" $list)
2805             [ "$list" = "" ] && warn "Option $opt did not match anything"
2806             $action $list
2807         ;;
2808         --enable-?*|--disable-?*)
2809             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2810             if is_in $option $COMPONENT_LIST; then
2811                 test $action = disable && action=unset
2812                 eval $action \$$(toupper ${option%s})_LIST
2813             elif is_in $option $CMDLINE_SELECT; then
2814                 $action $option
2815             else
2816                 die_unknown $opt
2817             fi
2818         ;;
2819         --list-*)
2820             NAME="${opt#--list-}"
2821             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2822             NAME=${NAME%s}
2823             eval show_list $NAME \$$(toupper $NAME)_LIST
2824         ;;
2825         --help|-h) show_help
2826         ;;
2827         --fatal-warnings) enable fatal_warnings
2828         ;;
2829         *)
2830             optname="${opt%%=*}"
2831             optname="${optname#--}"
2832             optname=$(echo "$optname" | sed 's/-/_/g')
2833             if is_in $optname $CMDLINE_SET; then
2834                 eval $optname='$optval'
2835             elif is_in $optname $CMDLINE_APPEND; then
2836                 append $optname "$optval"
2837             else
2838                 die_unknown $opt
2839             fi
2840         ;;
2841     esac
2842 done
2843
2844 disabled logging && logfile=/dev/null
2845
2846 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2847 set >> $logfile
2848
2849 test -n "$cross_prefix" && enable cross_compile
2850
2851 if enabled cross_compile; then
2852     test -n "$arch" && test -n "$target_os" ||
2853         die "Must specify target arch and OS when cross-compiling"
2854 fi
2855
2856 ar_default="${cross_prefix}${ar_default}"
2857 cc_default="${cross_prefix}${cc_default}"
2858 cxx_default="${cross_prefix}${cxx_default}"
2859 nm_default="${cross_prefix}${nm_default}"
2860 pkg_config_default="${cross_prefix}${pkg_config_default}"
2861 ranlib_default="${cross_prefix}${ranlib_default}"
2862 strip_default="${cross_prefix}${strip_default}"
2863 windres_default="${cross_prefix}${windres_default}"
2864
2865 sysinclude_default="${sysroot}/usr/include"
2866
2867 test -n "$valgrind" && toolchain="valgrind-memcheck"
2868
2869 case "$toolchain" in
2870     clang-asan)
2871         cc_default="clang"
2872         add_cflags  -fsanitize=address
2873         add_ldflags -fsanitize=address
2874     ;;
2875     clang-tsan)
2876         cc_default="clang"
2877         add_cflags  -fsanitize=thread -pie
2878         add_ldflags -fsanitize=thread -pie
2879     ;;
2880     clang-usan)
2881         cc_default="clang"
2882         add_cflags  -fsanitize=undefined
2883         add_ldflags -fsanitize=undefined
2884     ;;
2885     gcc-asan)
2886         cc_default="gcc"
2887         add_cflags  -fsanitize=address
2888         add_ldflags -fsanitize=address
2889     ;;
2890     gcc-tsan)
2891         cc_default="gcc"
2892         add_cflags  -fsanitize=thread -pie -fPIC
2893         add_ldflags -fsanitize=thread -pie -fPIC
2894     ;;
2895     gcc-usan)
2896         cc_default="gcc"
2897         add_cflags  -fsanitize=undefined
2898         add_ldflags -fsanitize=undefined
2899     ;;
2900     valgrind-massif)
2901         target_exec_default=${valgrind:-"valgrind"}
2902         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"
2903     ;;
2904     valgrind-memcheck)
2905         target_exec_default=${valgrind:-"valgrind"}
2906         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2907     ;;
2908     msvc)
2909         # Check whether the current MSVC version needs the C99 converter.
2910         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2911         # support enough of C99 to build ffmpeg. Default to the new
2912         # behaviour if the regexp was unable to match anything, since this
2913         # successfully parses the version number of existing supported
2914         # versions that require the converter (MSVC 2010 and 2012).
2915         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2916         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2917             cc_default="cl"
2918         else
2919             cc_default="c99wrap cl"
2920         fi
2921         ld_default="link"
2922         nm_default="dumpbin -symbols"
2923         ar_default="lib"
2924         target_os_default="win32"
2925         # Use a relative path for TMPDIR. This makes sure all the
2926         # ffconf temp files are written with a relative path, avoiding
2927         # issues with msys/win32 path conversion for MSVC parameters
2928         # such as -Fo<file> or -out:<file>.
2929         TMPDIR=.
2930     ;;
2931     icl)
2932         cc_default="icl"
2933         ld_default="xilink"
2934         nm_default="dumpbin -symbols"
2935         ar_default="xilib"
2936         target_os_default="win32"
2937         TMPDIR=.
2938     ;;
2939     gcov)
2940         add_cflags  -fprofile-arcs -ftest-coverage
2941         add_ldflags -fprofile-arcs -ftest-coverage
2942     ;;
2943     hardened)
2944         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2945         add_ldflags -Wl,-z,relro -Wl,-z,now
2946     ;;
2947     ?*)
2948         die "Unknown toolchain $toolchain"
2949     ;;
2950 esac
2951
2952 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2953 enabled cross_compile || host_cc_default=$cc
2954 set_default host_cc
2955
2956 if ! $pkg_config --version >/dev/null 2>&1; then
2957     warn "$pkg_config not found, library detection may fail."
2958     pkg_config=false
2959 fi
2960
2961 exesuf() {
2962     case $1 in
2963         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2964     esac
2965 }
2966
2967 EXESUF=$(exesuf $target_os)
2968 HOSTEXESUF=$(exesuf $host_os)
2969
2970 # set temporary file name
2971 : ${TMPDIR:=$TEMPDIR}
2972 : ${TMPDIR:=$TMP}
2973 : ${TMPDIR:=/tmp}
2974
2975 if [ -n "$tempprefix" ] ; then
2976     mktemp(){
2977         echo $tempprefix.${HOSTNAME}.${UID}
2978     }
2979 elif ! check_cmd mktemp -u XXXXXX; then
2980     # simple replacement for missing mktemp
2981     # NOT SAFE FOR GENERAL USE
2982     mktemp(){
2983         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2984     }
2985 fi
2986
2987 tmpfile(){
2988     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2989         (set -C; exec > $tmp) 2>/dev/null ||
2990         die "Unable to create temporary file in $TMPDIR."
2991     append TMPFILES $tmp
2992     eval $1=$tmp
2993 }
2994
2995 trap 'rm -f -- $TMPFILES' EXIT
2996
2997 tmpfile TMPASM .asm
2998 tmpfile TMPC   .c
2999 tmpfile TMPCPP .cpp
3000 tmpfile TMPE   $EXESUF
3001 tmpfile TMPH   .h
3002 tmpfile TMPM   .m
3003 tmpfile TMPO   .o
3004 tmpfile TMPS   .S
3005 tmpfile TMPSH  .sh
3006 tmpfile TMPV   .ver
3007
3008 unset -f mktemp
3009
3010 chmod +x $TMPE
3011
3012 # make sure we can execute files in $TMPDIR
3013 cat > $TMPSH 2>> $logfile <<EOF
3014 #! /bin/sh
3015 EOF
3016 chmod +x $TMPSH >> $logfile 2>&1
3017 if ! $TMPSH >> $logfile 2>&1; then
3018     cat <<EOF
3019 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3020 variable to another directory and make sure that it is not mounted noexec.
3021 EOF
3022     die "Sanity test failed."
3023 fi
3024
3025 ccc_flags(){
3026     for flag; do
3027         case $flag in
3028             -std=c99)           echo -c99                       ;;
3029             -mcpu=*)            echo -arch ${flag#*=}           ;;
3030             -mieee)             echo -ieee                      ;;
3031             -O*|-fast)          echo $flag                      ;;
3032             -fno-math-errno)    echo -assume nomath_errno       ;;
3033             -g)                 echo -g3                        ;;
3034             -Wall)              echo -msg_enable level2         ;;
3035             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3036             -Wl,*)              echo $flag                      ;;
3037             -f*|-W*)                                            ;;
3038             *)                  echo $flag                      ;;
3039         esac
3040    done
3041 }
3042
3043 cparser_flags(){
3044     for flag; do
3045         case $flag in
3046             -Wno-switch)             echo -Wno-switch-enum ;;
3047             -Wno-format-zero-length) ;;
3048             -Wdisabled-optimization) ;;
3049             -Wno-pointer-sign)       echo -Wno-other ;;
3050             *)                       echo $flag ;;
3051         esac
3052     done
3053 }
3054
3055 msvc_common_flags(){
3056     for flag; do
3057         case $flag in
3058             # In addition to specifying certain flags under the compiler
3059             # specific filters, they must be specified here as well or else the
3060             # generic catch all at the bottom will print the original flag.
3061             -Wall)                ;;
3062             -std=c99)             ;;
3063             # Common flags
3064             -fomit-frame-pointer) ;;
3065             -g)                   echo -Z7 ;;
3066             -fno-math-errno)      ;;
3067             -fno-common)          ;;
3068             -fno-signed-zeros)    ;;
3069             -fPIC)                ;;
3070             -mthumb)              ;;
3071             -march=*)             ;;
3072             -lz)                  echo zlib.lib ;;
3073             -lavifil32)           echo vfw32.lib ;;
3074             -lavicap32)           echo vfw32.lib user32.lib ;;
3075             -l*)                  echo ${flag#-l}.lib ;;
3076             *)                    echo $flag ;;
3077         esac
3078     done
3079 }
3080
3081 msvc_flags(){
3082     msvc_common_flags "$@"
3083     for flag; do
3084         case $flag in
3085             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3086                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3087                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3088                                        -wd4554 \
3089                                        -wd4273 ;;
3090         esac
3091     done
3092 }
3093
3094 icl_flags(){
3095     msvc_common_flags "$@"
3096     for flag; do
3097         case $flag in
3098             # Despite what Intel's documentation says -Wall, which is supported
3099             # on Windows, does enable remarks so disable them here.
3100             -Wall)                echo $flag -Qdiag-disable:remark ;;
3101             -std=c99)             echo -Qstd=c99 ;;
3102         esac
3103     done
3104 }
3105
3106 pgi_flags(){
3107     for flag; do
3108         case $flag in
3109             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3110             -fomit-frame-pointer) echo -Mnoframe ;;
3111             -g)                   echo -gopt ;;
3112             *)                    echo $flag ;;
3113         esac
3114     done
3115 }
3116
3117 suncc_flags(){
3118     for flag; do
3119         case $flag in
3120             -march=*|-mcpu=*)
3121                 case "${flag#*=}" in
3122                     native)                   echo -xtarget=native       ;;
3123                     v9|niagara)               echo -xarch=sparc          ;;
3124                     ultrasparc)               echo -xarch=sparcvis       ;;
3125                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3126                     i586|pentium)             echo -xchip=pentium        ;;
3127                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3128                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3129                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3130                     pentium4*)          echo -xtarget=pentium4           ;;
3131                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3132                     *-sse3)             echo -xarch=sse3                 ;;
3133                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3134                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3135                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3136                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3137                     bdver*)                    echo -xarch=avx           ;;
3138                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3139                     k8|opteron|athlon64|athlon-fx)
3140                                                echo -xarch=sse2a         ;;
3141                     athlon*)                   echo -xarch=pentium_proa  ;;
3142                 esac
3143                 ;;
3144             -std=c99)             echo -xc99              ;;
3145             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3146             -fPIC)                echo -KPIC -xcode=pic32 ;;
3147             -W*,*)                echo $flag              ;;
3148             -f*-*|-W*|-mimpure-text)                      ;;
3149             -shared)              echo -G                 ;;
3150             *)                    echo $flag              ;;
3151         esac
3152     done
3153 }
3154
3155 tms470_flags(){
3156     for flag; do
3157         case $flag in
3158             -march=*|-mcpu=*)
3159                 case "${flag#*=}" in
3160                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3161                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3162                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3163                     armv6*|arm11*)          echo -mv=6   ;;
3164                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3165                                             echo -mv=5e  ;;
3166                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3167                 esac
3168                 ;;
3169             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3170             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3171             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3172             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3173             -msoft-float)   echo --float_support=vfplib       ;;
3174             -O[0-3]|-mf=*)  echo $flag                        ;;
3175             -g)             echo -g -mn                       ;;
3176             -pds=*)         echo $flag                        ;;
3177             -D*|-I*)        echo $flag                        ;;
3178             --gcc|--abi=*)  echo $flag                        ;;
3179             -me)            echo $flag                        ;;
3180         esac
3181     done
3182 }
3183
3184 probe_cc(){
3185     pfx=$1
3186     _cc=$2
3187
3188     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3189     unset _ld_o _ldflags _ld_lib _ld_path
3190     unset _depflags _DEPCMD _DEPFLAGS
3191     _flags_filter=echo
3192
3193     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3194         true # no-op to avoid reading stdin in following checks
3195     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3196         _type=llvm_gcc
3197         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3198         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3199         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3200         _cflags_speed='-O3'
3201         _cflags_size='-Os'
3202     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3203         _type=gcc
3204         gcc_version=$($_cc --version | head -n1)
3205         gcc_basever=$($_cc -dumpversion)
3206         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3207         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3208         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3209         if ! $_cc -dumpversion | grep -q '^2\.'; then
3210             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3211         fi
3212         _cflags_speed='-O3'
3213         _cflags_size='-Os'
3214     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3215         _type=icc
3216         _ident=$($_cc --version | head -n1)
3217         _depflags='-MMD'
3218         _cflags_speed='-O3'
3219         _cflags_size='-Os'
3220         _cflags_noopt='-O1'
3221     elif $_cc -v 2>&1 | grep -q xlc; then
3222         _type=xlc
3223         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3224         _cflags_speed='-O5'
3225         _cflags_size='-O5 -qcompact'
3226     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3227         _type=ccc
3228         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3229         _DEPFLAGS='-M'
3230         _cflags_speed='-fast'
3231         _cflags_size='-O1'
3232         _flags_filter=ccc_flags
3233     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3234         test -d "$sysroot" || die "No valid sysroot specified."
3235         _type=armcc
3236         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3237         armcc_conf="$PWD/armcc.conf"
3238         $_cc --arm_linux_configure                 \
3239              --arm_linux_config_file="$armcc_conf" \
3240              --configure_sysroot="$sysroot"        \
3241              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3242              die "Error creating armcc configuration file."
3243         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3244         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3245         as_default="${cross_prefix}gcc"
3246         _depflags='-MMD'
3247         _cflags_speed='-O3'
3248         _cflags_size='-Os'
3249     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3250         _type=tms470
3251         _ident=$($_cc -version | head -n1 | tr -s ' ')
3252         _flags='--gcc --abi=eabi -me'
3253         _cc_e='-ppl -fe=$@'
3254         _cc_o='-fe=$@'
3255         _depflags='-ppa -ppd=$(@:.o=.d)'
3256         _cflags_speed='-O3 -mf=5'
3257         _cflags_size='-O3 -mf=2'
3258         _flags_filter=tms470_flags
3259     elif $_cc -v 2>&1 | grep -q clang; then
3260         _type=clang
3261         _ident=$($_cc --version | head -n1)
3262         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3263         _cflags_speed='-O3'
3264         _cflags_size='-Os'
3265     elif $_cc -V 2>&1 | grep -q Sun; then
3266         _type=suncc
3267         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3268         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3269         _DEPFLAGS='-xM1 -xc99'
3270         _ldflags='-std=c99'
3271         _cflags_speed='-O5'
3272         _cflags_size='-O5 -xspace'
3273         _flags_filter=suncc_flags
3274     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3275         _type=pathscale
3276         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3277         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3278         _cflags_speed='-O2'
3279         _cflags_size='-Os'
3280         _flags_filter='filter_out -Wdisabled-optimization'
3281     elif $_cc -v 2>&1 | grep -q Open64; then
3282         _type=open64
3283         _ident=$($_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|-Wtype-limits|-fno-signed-zeros'
3288     elif $_cc -V 2>&1 | grep -q Portland; then
3289         _type=pgi
3290         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3291         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3292         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3293         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3294         _cflags_noopt="-O"
3295         _flags_filter=pgi_flags
3296     elif $_cc 2>&1 | grep -q Microsoft; then
3297         _type=msvc
3298         _ident=$($cc 2>&1 | head -n1)
3299         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3300         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3301         _cflags_speed="-O2"
3302         _cflags_size="-O1"
3303         if $_cc 2>&1 | grep -q Linker; then
3304             _ld_o='-out:$@'
3305         else
3306             _ld_o='-Fe$@'
3307         fi
3308         _cc_o='-Fo$@'
3309         _cc_e='-P -Fi$@'
3310         _flags_filter=msvc_flags
3311         _ld_lib='lib%.a'
3312         _ld_path='-libpath:'
3313         _flags='-nologo'
3314         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3315         if [ $pfx = hostcc ]; then
3316             append _cflags -Dsnprintf=_snprintf
3317         fi
3318         disable stripping
3319     elif $_cc 2>&1 | grep -q Intel; then
3320         _type=icl
3321         _ident=$($cc 2>&1 | head -n1)
3322         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3323         # Not only is O3 broken on 13.x+ but it is slower on all previous
3324         # versions (tested) as well.
3325         _cflags_speed="-O2"
3326         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3327         if $_cc 2>&1 | grep -q Linker; then
3328             _ld_o='-out:$@'
3329         else
3330             _ld_o='-Fe$@'
3331         fi
3332         _cc_o='-Fo$@'
3333         _cc_e='-P'
3334         _flags_filter=icl_flags
3335         _ld_lib='lib%.a'
3336         _ld_path='-libpath:'
3337         # -Qdiag-error to make icl error when seeing certain unknown arguments
3338         _flags='-nologo -Qdiag-error:4044,10157'
3339         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3340         # with MSVC which enables it by default.
3341         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3342         if [ $pfx = hostcc ]; then
3343             append _cflags -Dsnprintf=_snprintf
3344         fi
3345     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3346         _type=cparser
3347         _ident=$($_cc --version | head -n1)
3348         _depflags='-MMD'
3349         _cflags_speed='-O4'
3350         _cflags_size='-O2'
3351         _flags_filter=cparser_flags
3352     fi
3353
3354     eval ${pfx}_type=\$_type
3355     eval ${pfx}_ident=\$_ident
3356 }
3357
3358 set_ccvars(){
3359     eval ${1}_C=\${_cc_c-\${${1}_C}}
3360     eval ${1}_E=\${_cc_e-\${${1}_E}}
3361     eval ${1}_O=\${_cc_o-\${${1}_O}}
3362
3363     if [ -n "$_depflags" ]; then
3364         eval ${1}_DEPFLAGS=\$_depflags
3365     else
3366         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3367         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3368         eval DEP${1}FLAGS=\$_flags
3369     fi
3370 }
3371
3372 probe_cc cc "$cc"
3373 cflags_filter=$_flags_filter
3374 cflags_speed=$_cflags_speed
3375 cflags_size=$_cflags_size
3376 cflags_noopt=$_cflags_noopt
3377 add_cflags $_flags $_cflags
3378 cc_ldflags=$_ldflags
3379 set_ccvars CC
3380
3381 probe_cc hostcc "$host_cc"
3382 host_cflags_filter=$_flags_filter
3383 add_host_cflags  $_flags $_cflags
3384 set_ccvars HOSTCC
3385
3386 test -n "$cc_type" && enable $cc_type ||
3387     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3388
3389 : ${as_default:=$cc}
3390 : ${dep_cc_default:=$cc}
3391 : ${ld_default:=$cc}
3392 : ${host_ld_default:=$host_cc}
3393 set_default ar as dep_cc ld host_ld windres
3394
3395 probe_cc as "$as"
3396 asflags_filter=$_flags_filter
3397 add_asflags $_flags $_cflags
3398 set_ccvars AS
3399
3400 probe_cc ld "$ld"
3401 ldflags_filter=$_flags_filter
3402 add_ldflags $_flags $_ldflags
3403 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3404 LD_O=${_ld_o-$LD_O}
3405 LD_LIB=${_ld_lib-$LD_LIB}
3406 LD_PATH=${_ld_path-$LD_PATH}
3407
3408 probe_cc hostld "$host_ld"
3409 host_ldflags_filter=$_flags_filter
3410 add_host_ldflags $_flags $_ldflags
3411 HOSTLD_O=${_ld_o-$HOSTLD_O}
3412
3413 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3414     probe_cc depcc "$dep_cc"
3415     CCDEP=${_DEPCMD:-$DEPCMD}
3416     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3417     DEPCCFLAGS=$_flags
3418 fi
3419
3420 if $ar 2>&1 | grep -q Microsoft; then
3421     arflags="-nologo"
3422     ar_o='-out:$@'
3423 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3424     arflags="rq"
3425     ar_o='$@'
3426 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3427     arflags='-Xany -r -c'
3428     ar_o='$@'
3429 else
3430     arflags="rc"
3431     ar_o='$@'
3432 fi
3433
3434 add_cflags $extra_cflags
3435 add_cxxflags $extra_cxxflags
3436 add_asflags $extra_cflags
3437
3438 if test -n "$sysroot"; then
3439     case "$cc_type" in
3440         gcc|llvm_gcc|clang)
3441             add_cppflags --sysroot="$sysroot"
3442             add_ldflags --sysroot="$sysroot"
3443 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3444             add_cppflags -isysroot "$sysroot"
3445             add_ldflags -isysroot "$sysroot"
3446         ;;
3447         tms470)
3448             add_cppflags -I"$sysinclude"
3449             add_ldflags  --sysroot="$sysroot"
3450         ;;
3451     esac
3452 fi
3453
3454 if test "$cpu" = host; then
3455     enabled cross_compile &&
3456         die "--cpu=host makes no sense when cross-compiling."
3457
3458     case "$cc_type" in
3459         gcc|llvm_gcc)
3460             check_native(){
3461                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3462                 sed -n "/cc1.*$1=/{
3463                             s/.*$1=\\([^ ]*\\).*/\\1/
3464                             p
3465                             q
3466                         }" $TMPE
3467             }
3468             cpu=$(check_native -march || check_native -mcpu)
3469         ;;
3470     esac
3471
3472     test "${cpu:-host}" = host &&
3473         die "--cpu=host not supported with compiler $cc"
3474 fi
3475
3476 # Deal with common $arch aliases
3477 case "$arch" in
3478     aarch64|arm64)
3479         arch="aarch64"
3480     ;;
3481     arm*|iPad*|iPhone*)
3482         arch="arm"
3483     ;;
3484     mips*|IP*)
3485         arch="mips"
3486     ;;
3487     parisc*|hppa*)
3488         arch="parisc"
3489     ;;
3490     "Power Macintosh"|ppc*|powerpc*)
3491         arch="ppc"
3492     ;;
3493     s390|s390x)
3494         arch="s390"
3495     ;;
3496     sh4|sh)
3497         arch="sh4"
3498     ;;
3499     sun4u|sparc*)
3500         arch="sparc"
3501     ;;
3502     tilegx|tile-gx)
3503         arch="tilegx"
3504     ;;
3505     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3506         arch="x86"
3507     ;;
3508 esac
3509
3510 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3511 enable $arch
3512
3513 # Add processor-specific flags
3514 if enabled aarch64; then
3515
3516     case $cpu in
3517         armv*)
3518             cpuflags="-march=$cpu"
3519         ;;
3520         *)
3521             cpuflags="-mcpu=$cpu"
3522         ;;
3523     esac
3524
3525 elif enabled alpha; then
3526
3527     cpuflags="-mcpu=$cpu"
3528
3529 elif enabled arm; then
3530
3531     check_arm_arch() {
3532         check_cpp_condition stddef.h \
3533             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3534             $cpuflags
3535     }
3536
3537     probe_arm_arch() {
3538         if   check_arm_arch 4;        then echo armv4;
3539         elif check_arm_arch 4T;       then echo armv4t;
3540         elif check_arm_arch 5;        then echo armv5;
3541         elif check_arm_arch 5E;       then echo armv5e;
3542         elif check_arm_arch 5T;       then echo armv5t;
3543         elif check_arm_arch 5TE;      then echo armv5te;
3544         elif check_arm_arch 5TEJ;     then echo armv5te;
3545         elif check_arm_arch 6;        then echo armv6;
3546         elif check_arm_arch 6J;       then echo armv6j;
3547         elif check_arm_arch 6K;       then echo armv6k;
3548         elif check_arm_arch 6Z;       then echo armv6z;
3549         elif check_arm_arch 6ZK;      then echo armv6zk;
3550         elif check_arm_arch 6T2;      then echo armv6t2;
3551         elif check_arm_arch 7;        then echo armv7;
3552         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3553         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3554         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3555         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3556         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3557         fi
3558     }
3559
3560     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3561
3562     case $cpu in
3563         armv*)
3564             cpuflags="-march=$cpu"
3565             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3566         ;;
3567         *)
3568             cpuflags="-mcpu=$cpu"
3569             case $cpu in
3570                 cortex-a*)                               subarch=armv7a  ;;
3571                 cortex-r*)                               subarch=armv7r  ;;
3572                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3573                 arm11*)                                  subarch=armv6   ;;
3574                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3575                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3576                 *)                             subarch=$(probe_arm_arch) ;;
3577             esac
3578         ;;
3579     esac
3580
3581     case "$subarch" in
3582         armv5t*)    enable fast_clz                ;;
3583         armv[6-8]*) enable fast_clz fast_unaligned ;;
3584     esac
3585
3586 elif enabled avr32; then
3587
3588     case $cpu in
3589         ap7[02]0[0-2])
3590             subarch="avr32_ap"
3591             cpuflags="-mpart=$cpu"
3592         ;;
3593         ap)
3594             subarch="avr32_ap"
3595             cpuflags="-march=$cpu"
3596         ;;
3597         uc3[ab]*)
3598             subarch="avr32_uc"
3599             cpuflags="-mcpu=$cpu"
3600         ;;
3601         uc)
3602             subarch="avr32_uc"
3603             cpuflags="-march=$cpu"
3604         ;;
3605     esac
3606
3607 elif enabled bfin; then
3608
3609     cpuflags="-mcpu=$cpu"
3610
3611 elif enabled mips; then
3612
3613     cpuflags="-march=$cpu"
3614
3615     case $cpu in
3616         24kc)
3617             disable mipsfpu
3618             disable mipsdspr1
3619             disable mipsdspr2
3620         ;;
3621         24kf*)
3622             disable mipsdspr1
3623             disable mipsdspr2
3624         ;;
3625         24kec|34kc|1004kc)
3626             disable mipsfpu
3627             disable mipsdspr2
3628         ;;
3629         24kef*|34kf*|1004kf*)
3630             disable mipsdspr2
3631         ;;
3632         74kc)
3633             disable mipsfpu
3634         ;;
3635     esac
3636
3637 elif enabled ppc; then
3638
3639     disable ldbrx
3640
3641     case $(tolower $cpu) in
3642         601|ppc601|powerpc601)
3643             cpuflags="-mcpu=601"
3644             disable altivec
3645         ;;
3646         603*|ppc603*|powerpc603*)
3647             cpuflags="-mcpu=603"
3648             disable altivec
3649         ;;
3650         604*|ppc604*|powerpc604*)
3651             cpuflags="-mcpu=604"
3652             disable altivec
3653         ;;
3654         g3|75*|ppc75*|powerpc75*)
3655             cpuflags="-mcpu=750"
3656             disable altivec
3657         ;;
3658         g4|745*|ppc745*|powerpc745*)
3659             cpuflags="-mcpu=7450"
3660         ;;
3661         74*|ppc74*|powerpc74*)
3662             cpuflags="-mcpu=7400"
3663         ;;
3664         g5|970|ppc970|powerpc970)
3665             cpuflags="-mcpu=970"
3666         ;;
3667         power[3-7]*)
3668             cpuflags="-mcpu=$cpu"
3669         ;;
3670         cell)
3671             cpuflags="-mcpu=cell"
3672             enable ldbrx
3673         ;;
3674         e500mc)
3675             cpuflags="-mcpu=e500mc"
3676             disable altivec
3677         ;;
3678         e500v2)
3679             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3680             disable altivec
3681             disable dcbzl
3682         ;;
3683         e500)
3684             cpuflags="-mcpu=8540 -mhard-float"
3685             disable altivec
3686             disable dcbzl
3687         ;;
3688     esac
3689
3690 elif enabled sparc; then
3691
3692     case $cpu in
3693         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3694             cpuflags="-mcpu=$cpu"
3695         ;;
3696         ultrasparc*|niagara[234])
3697             cpuflags="-mcpu=$cpu"
3698         ;;
3699     esac
3700
3701 elif enabled x86; then
3702
3703     case $cpu in
3704         i[345]86|pentium)
3705             cpuflags="-march=$cpu"
3706             disable mmx
3707         ;;
3708         # targets that do NOT support nopl and conditional mov (cmov)
3709         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3710             cpuflags="-march=$cpu"
3711             disable i686
3712         ;;
3713         # targets that do support nopl and conditional mov (cmov)
3714         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3715             cpuflags="-march=$cpu"
3716             enable i686
3717             enable fast_cmov
3718         ;;
3719         # targets that do support conditional mov but on which it's slow
3720         pentium4|pentium4m|prescott|nocona)
3721             cpuflags="-march=$cpu"
3722             enable i686
3723             disable fast_cmov
3724         ;;
3725     esac
3726
3727 fi
3728
3729 if [ "$cpu" != generic ]; then
3730     add_cflags  $cpuflags
3731     add_asflags $cpuflags
3732 fi
3733
3734 # compiler sanity check
3735 check_exec <<EOF
3736 int main(void){ return 0; }
3737 EOF
3738 if test "$?" != 0; then
3739     echo "$cc is unable to create an executable file."
3740     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3741         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3742         echo "Only do this if you know what cross compiling means."
3743     fi
3744     die "C compiler test failed."
3745 fi
3746
3747 add_cppflags -D_ISOC99_SOURCE
3748 add_cxxflags -D__STDC_CONSTANT_MACROS
3749 check_cflags -std=c99
3750 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3751 #include <stdlib.h>
3752 EOF
3753 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3754 #include <stdlib.h>
3755 EOF
3756
3757 add_host_cppflags -D_ISOC99_SOURCE
3758 check_host_cflags -std=c99
3759 check_host_cflags -Wall
3760 check_host_cflags -O3
3761
3762 check_64bit(){
3763     arch32=$1
3764     arch64=$2
3765     expr=$3
3766     check_code cc "" "int test[2*($expr) - 1]" &&
3767         subarch=$arch64 || subarch=$arch32
3768 }
3769
3770 case "$arch" in
3771     aarch64|alpha|ia64)
3772         spic=$shared
3773     ;;
3774     mips)
3775         check_64bit mips mips64 '_MIPS_SIM > 1'
3776         spic=$shared
3777     ;;
3778     parisc)
3779         check_64bit parisc parisc64 'sizeof(void *) > 4'
3780         spic=$shared
3781     ;;
3782     ppc)
3783         check_64bit ppc ppc64 'sizeof(void *) > 4'
3784         spic=$shared
3785     ;;
3786     s390)
3787         check_64bit s390 s390x 'sizeof(void *) > 4'
3788         spic=$shared
3789     ;;
3790     sparc)
3791         check_64bit sparc sparc64 'sizeof(void *) > 4'
3792         spic=$shared
3793     ;;
3794     x86)
3795         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3796         if test "$subarch" = "x86_64"; then
3797             spic=$shared
3798         fi
3799     ;;
3800     ppc)
3801         check_cc <<EOF && subarch="ppc64"
3802         int test[(int)sizeof(char*) - 7];
3803 EOF
3804     ;;
3805 esac
3806
3807 enable $subarch
3808 enabled spic && enable_weak pic
3809
3810 # OS specific
3811 case $target_os in
3812     aix)
3813         SHFLAGS=-shared
3814         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3815         enabled shared && add_ldflags -Wl,-brtl
3816         ;;
3817     haiku)
3818         prefix_default="/boot/common"
3819         network_extralibs="-lnetwork"
3820         host_libs=
3821         ;;
3822     sunos)
3823         SHFLAGS='-shared -Wl,-h,$$(@F)'
3824         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3825         network_extralibs="-lsocket -lnsl"
3826         # When using suncc to build, the Solaris linker will mark
3827         # an executable with each instruction set encountered by
3828         # the Solaris assembler.  As our libraries contain their own
3829         # guards for processor-specific code, instead suppress
3830         # generation of the HWCAPS ELF section on Solaris x86 only.
3831         enabled_all suncc x86 &&
3832             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3833             add_ldflags -Wl,-M,mapfile
3834         nm_default='nm -P -g'
3835         ;;
3836     netbsd)
3837         disable symver
3838         oss_indev_extralibs="-lossaudio"
3839         oss_outdev_extralibs="-lossaudio"
3840         enabled gcc || check_ldflags -Wl,-zmuldefs
3841         ;;
3842     openbsd|bitrig)
3843         disable symver
3844         SHFLAGS='-shared'
3845         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3846         SLIB_INSTALL_LINKS=
3847         oss_indev_extralibs="-lossaudio"
3848         oss_outdev_extralibs="-lossaudio"
3849         ;;
3850     dragonfly)
3851         disable symver
3852         ;;
3853     freebsd)
3854         ;;
3855     bsd/os)
3856         add_extralibs -lpoll -lgnugetopt
3857         strip="strip -d"
3858         ;;
3859     darwin)
3860         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3861         enabled ppc && add_asflags -force_cpusubtype_ALL
3862         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3863         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3864         strip="${strip} -x"
3865         add_ldflags -Wl,-dynamic,-search_paths_first
3866         SLIBSUF=".dylib"
3867         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3868         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3869         objformat="macho"
3870         enabled x86_64 && objformat="macho64"
3871         enabled_any pic shared ||
3872             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3873         ;;
3874     mingw32*)
3875         if test $target_os = "mingw32ce"; then
3876             disable network
3877         else
3878             target_os=mingw32
3879         fi
3880         LIBTARGET=i386
3881         if enabled x86_64; then
3882             LIBTARGET="i386:x86-64"
3883         elif enabled arm; then
3884             LIBTARGET=arm-wince
3885         fi
3886         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3887         check_ldflags -Wl,--nxcompat
3888         check_ldflags -Wl,--dynamicbase
3889         shlibdir_default="$bindir_default"
3890         SLIBPREF=""
3891         SLIBSUF=".dll"
3892         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3893         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3894         dlltool="${cross_prefix}dlltool"
3895         if check_cmd lib.exe -list; then
3896             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3897             if enabled x86_64; then
3898                 LIBTARGET=x64
3899             fi
3900         elif check_cmd $dlltool --version; then
3901             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3902         fi
3903         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3904         SLIB_INSTALL_LINKS=
3905         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3906         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3907         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3908         objformat="win32"
3909         ranlib=:
3910         enable dos_paths
3911         ;;
3912     win32|win64)
3913         disable symver
3914         if enabled shared; then
3915             # Link to the import library instead of the normal static library
3916             # for shared libs.
3917             LD_LIB='%.lib'
3918             # Cannot build both shared and static libs with MSVC or icl.
3919             disable static
3920         fi
3921         shlibdir_default="$bindir_default"
3922         SLIBPREF=""
3923         SLIBSUF=".dll"
3924         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3925         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3926         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3927         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3928         SLIB_INSTALL_LINKS=
3929         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3930         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3931         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3932         objformat="win32"
3933         ranlib=:
3934         enable dos_paths
3935         ;;
3936     cygwin*)
3937         target_os=cygwin
3938         shlibdir_default="$bindir_default"
3939         SLIBPREF="cyg"
3940         SLIBSUF=".dll"
3941         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3942         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3943         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3944         SLIB_INSTALL_LINKS=
3945         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3946         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3947         objformat="win32"
3948         enable dos_paths
3949         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3950         ;;
3951     *-dos|freedos|opendos)
3952         network_extralibs="-lsocket"
3953         objformat="coff"
3954         enable dos_paths
3955         add_cppflags -U__STRICT_ANSI__
3956         ;;
3957     linux)
3958         enable dv1394
3959         ;;
3960     irix*)
3961         target_os=irix
3962         ranlib="echo ignoring ranlib"
3963         ;;
3964     os/2*)
3965         strip="lxlite -CS"
3966         ln_s="cp -f"
3967         objformat="aout"
3968         add_cppflags -D_GNU_SOURCE
3969         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3970         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3971         LIBSUF="_s.a"
3972         SLIBPREF=""
3973         SLIBSUF=".dll"
3974         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3975         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3976         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3977             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3978             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3979             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3980             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3981             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3982         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3983             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3984         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3985         enable dos_paths
3986         enable_weak os2threads
3987         ;;
3988     gnu/kfreebsd)
3989         add_cppflags -D_BSD_SOURCE
3990         ;;
3991     gnu)
3992         ;;
3993     qnx)
3994         add_cppflags -D_QNX_SOURCE
3995         network_extralibs="-lsocket"
3996         ;;
3997     symbian)
3998         SLIBSUF=".dll"
3999         enable dos_paths
4000         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4001         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4002         add_ldflags -Wl,--target1-abs,--no-undefined \
4003                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4004                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4005         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4006                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4007                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4008         ;;
4009     osf1)
4010         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4011         ;;
4012     minix)
4013         ;;
4014     plan9)
4015         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4016                      -D_REENTRANT_SOURCE        \
4017                      -D_RESEARCH_SOURCE         \
4018                      -DFD_SETSIZE=96            \
4019                      -DHAVE_SOCK_OPTS
4020         add_compat strtod.o strtod=avpriv_strtod
4021         network_extralibs='-lbsd'
4022         exeobjs=compat/plan9/main.o
4023         disable ffserver
4024         cp_f='cp'
4025         ;;
4026     none)
4027         ;;
4028     *)
4029         die "Unknown OS '$target_os'."
4030         ;;
4031 esac
4032
4033 # determine libc flavour
4034
4035 probe_libc(){
4036     pfx=$1
4037     pfx_no_=${pfx%_}
4038     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4039     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4040         eval ${pfx}libc_type=uclibc
4041         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4042     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4043         eval ${pfx}libc_type=glibc
4044         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4045     # MinGW headers can be installed on Cygwin, so check for newlib first.
4046     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4047         eval ${pfx}libc_type=newlib
4048         add_${pfx}cppflags -U__STRICT_ANSI__
4049     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4050     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4051         eval ${pfx}libc_type=mingw64
4052         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4053             add_compat msvcrt/snprintf.o
4054             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4055         fi
4056         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4057         eval test \$${pfx_no_}cc_type = "gcc" &&
4058             add_${pfx}cppflags -D__printf__=__gnu_printf__
4059     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4060          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4061         eval ${pfx}libc_type=mingw32
4062         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4063             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4064             die "ERROR: MinGW32 runtime version must be >= 3.15."
4065         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4066         eval test \$${pfx_no_}cc_type = "gcc" &&
4067             add_${pfx}cppflags -D__printf__=__gnu_printf__
4068     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4069         eval ${pfx}libc_type=msvcrt
4070         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4071         # 0x601 by default unless something else is set by the user.
4072         # This can easily lead to us detecting functions only present
4073         # in such new versions and producing binaries requiring windows 7.0.
4074         # Therefore explicitly set the default to XP unless the user has
4075         # set something else on the command line.
4076         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4077             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4078     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4079         eval ${pfx}libc_type=klibc
4080     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4081         eval ${pfx}libc_type=bionic
4082     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4083         eval ${pfx}libc_type=solaris
4084         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4085     fi
4086 }
4087
4088 probe_libc
4089 test -n "$libc_type" && enable libc_$libc_type
4090 probe_libc host_
4091 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4092
4093 case $libc_type in
4094     bionic)
4095         add_compat strtod.o strtod=avpriv_strtod
4096         ;;
4097     msvcrt)
4098         add_compat strtod.o strtod=avpriv_strtod
4099         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4100                                      _snprintf=avpriv_snprintf  \
4101                                      vsnprintf=avpriv_vsnprintf
4102         ;;
4103 esac
4104
4105 # hacks for compiler/libc/os combinations
4106
4107 if enabled_all tms470 libc_glibc; then
4108     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4109     add_cppflags -D__USER_LABEL_PREFIX__=
4110     add_cppflags -D__builtin_memset=memset
4111     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4112     add_cflags   -pds=48    # incompatible redefinition of macro
4113 fi
4114
4115 if enabled_all ccc libc_glibc; then
4116     add_ldflags -Wl,-z,now  # calls to libots crash without this
4117 fi
4118
4119 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4120     add_cppflags '-I\$(SRC_PATH)/compat/float'
4121
4122 esc(){
4123     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4124 }
4125
4126 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4127
4128 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4129
4130 set_default $PATHS_LIST
4131 set_default nm
4132
4133 # we need to build at least one lib type
4134 if ! enabled_any static shared; then
4135     cat <<EOF
4136 At least one library type must be built.
4137 Specify --enable-static to build the static libraries or --enable-shared to
4138 build the shared libraries as well. To only build the shared libraries specify
4139 --disable-static in addition to --enable-shared.
4140 EOF
4141     exit 1;
4142 fi
4143
4144 die_license_disabled() {
4145     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4146 }
4147
4148 die_license_disabled_gpl() {
4149     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4150 }
4151
4152 die_license_disabled gpl frei0r
4153 die_license_disabled gpl libcdio
4154 die_license_disabled gpl libutvideo
4155 die_license_disabled gpl libvidstab
4156 die_license_disabled gpl libx264
4157 die_license_disabled gpl libx265
4158 die_license_disabled gpl libxavs
4159 die_license_disabled gpl libxvid
4160 die_license_disabled gpl libzvbi
4161 die_license_disabled gpl x11grab
4162
4163 die_license_disabled nonfree libaacplus
4164 die_license_disabled nonfree libfaac
4165 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4166 enabled gpl && die_license_disabled_gpl nonfree openssl
4167
4168 die_license_disabled version3 libopencore_amrnb
4169 die_license_disabled version3 libopencore_amrwb
4170 die_license_disabled version3 libvo_aacenc
4171 die_license_disabled version3 libvo_amrwbenc
4172
4173 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4174
4175 disabled optimizations || check_cflags -fomit-frame-pointer
4176
4177 enable_weak_pic() {
4178     disabled pic && return
4179     enable pic
4180     add_cppflags -DPIC
4181     case "$target_os" in
4182     mingw*|cygwin*)
4183         ;;
4184     *)
4185         add_cflags -fPIC
4186         ;;
4187     esac
4188     add_asflags  -fPIC
4189 }
4190
4191 enabled pic && enable_weak_pic
4192
4193 check_cc <<EOF || die "Symbol mangling check failed."
4194 int ff_extern;
4195 EOF
4196 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4197 extern_prefix=${sym%%ff_extern*}
4198
4199 check_cc <<EOF && enable_weak inline_asm
4200 void foo(void) { __asm__ volatile ("" ::); }
4201 EOF
4202
4203 _restrict=
4204 for restrict_keyword in restrict __restrict__ __restrict; do
4205     check_cc <<EOF && _restrict=$restrict_keyword && break
4206 void foo(char * $restrict_keyword p);
4207 EOF
4208 done
4209
4210 check_cc <<EOF && enable pragma_deprecated
4211 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4212 EOF
4213
4214 check_cc <<EOF && enable attribute_packed
4215 struct { int x; } __attribute__((packed)) x;
4216 EOF
4217
4218 check_cc <<EOF && enable attribute_may_alias
4219 union { int x; } __attribute__((may_alias)) x;
4220 EOF
4221
4222 check_cc <<EOF || die "endian test failed"
4223 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4224 EOF
4225 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4226
4227 check_inline_asm inline_asm_labels '"1:\n"'
4228
4229 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4230
4231 if enabled aarch64; then
4232     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4233     # internal assembler in clang 3.3 does not support this instruction
4234     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4235     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4236
4237     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4238
4239 elif enabled alpha; then
4240
4241     check_cflags -mieee
4242
4243 elif enabled arm; then
4244
4245     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4246 float func(float a, float b){ return a+b; }
4247 EOF
4248
4249     enabled thumb && check_cflags -mthumb || check_cflags -marm
4250     nogas=die
4251
4252     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4253         enable vfp_args
4254     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4255         case "${cross_prefix:-$cc}" in
4256             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4257             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4258 __asm__ (".eabi_attribute 28, 1");
4259 int main(void) { return 0; }
4260 EOF
4261         esac
4262         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4263     fi
4264
4265     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4266     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4267     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4268     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4269     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4270     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4271
4272     [ $target_os = linux ] ||
4273         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4274             $ARCH_EXT_LIST_ARM
4275
4276     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4277
4278     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4279
4280 elif enabled mips; then
4281
4282     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4283     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4284      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4285     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4286      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4287     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4288      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4289     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4290      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4291
4292 elif enabled parisc; then
4293
4294     if enabled gcc; then
4295         case $($cc -dumpversion) in
4296             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4297         esac
4298     fi
4299
4300 elif enabled ppc; then
4301
4302     enable local_aligned_8 local_aligned_16
4303
4304     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4305     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4306     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4307     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4308
4309     # AltiVec flags: The FSF version of GCC differs from the Apple version
4310     if enabled altivec; then
4311         if ! enabled_any pic ppc64; then
4312             nogas=warn
4313         fi
4314         check_cflags -maltivec -mabi=altivec &&
4315         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4316         check_cflags -faltivec
4317
4318         # check if our compiler supports Motorola AltiVec C API
4319         check_cc <<EOF || disable altivec
4320 $inc_altivec_h
4321 int main(void) {
4322     vector signed int v1 = (vector signed int) { 0 };
4323     vector signed int v2 = (vector signed int) { 1 };
4324     v1 = vec_add(v1, v2);
4325     return 0;
4326 }
4327 EOF
4328
4329         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4330     fi
4331
4332 elif enabled x86; then
4333
4334     check_builtin rdtsc    intrin.h   "__rdtsc()"
4335     check_builtin mm_empty mmintrin.h "_mm_empty()"
4336
4337     enable local_aligned_8 local_aligned_16
4338
4339     # check whether EBP is available on x86
4340     # As 'i' is stored on the stack, this program will crash
4341     # if the base pointer is used to access it because the
4342     # base pointer is cleared in the inline assembly code.
4343     check_exec_crash <<EOF && enable ebp_available
4344 volatile int i=0;
4345 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4346 return i;
4347 EOF
4348
4349     # check whether EBX is available on x86
4350     check_inline_asm ebx_available '""::"b"(0)' &&
4351         check_inline_asm ebx_available '"":::"%ebx"'
4352
4353     # check whether xmm clobbers are supported
4354     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4355
4356     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4357         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4358
4359     # check whether binutils is new enough to compile SSSE3/MMXEXT
4360     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4361     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4362
4363     if ! disabled_any asm mmx yasm; then
4364         if check_cmd $yasmexe --version; then
4365             enabled x86_64 && yasm_extra="-m amd64"
4366             yasm_debug="-g dwarf2"
4367         elif check_cmd nasm -v; then
4368             yasmexe=nasm
4369             yasm_debug="-g -F dwarf"
4370             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4371         fi
4372
4373         YASMFLAGS="-f $objformat $yasm_extra"
4374         enabled pic               && append YASMFLAGS "-DPIC"
4375         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4376         case "$objformat" in
4377             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4378         esac
4379
4380         check_yasm "movbe ecx, [5]" && enable yasm ||
4381             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4382         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4383         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4384         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4385         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4386         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4387         check_yasm "CPU amdnop" || disable cpunop
4388     fi
4389
4390     case "$cpu" in
4391         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4392             disable fast_clz
4393         ;;
4394     esac
4395
4396 fi
4397
4398 if enabled asm; then
4399     as=${gas:=$as}
4400     check_as <<EOF && enable gnu_as || \
4401         $nogas "GNU assembler not found, install gas-preprocessor"
4402 .macro m n
4403 \n: .int 0
4404 .endm
4405 m x
4406 EOF
4407 fi
4408
4409 check_ldflags -Wl,--as-needed
4410
4411 if check_func dlopen; then
4412     ldl=
4413 elif check_func dlopen -ldl; then
4414     ldl=-ldl
4415 fi
4416
4417 if ! disabled network; then
4418     check_func getaddrinfo $network_extralibs
4419     check_func getservbyport $network_extralibs
4420     check_func inet_aton $network_extralibs
4421
4422     check_type netdb.h "struct addrinfo"
4423     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4424     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4425     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4426     check_type poll.h "struct pollfd"
4427     check_type netinet/sctp.h "struct sctp_event_subscribe"
4428     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4429     check_type netinet/in.h "struct sockaddr_in6"
4430     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4431     check_type "sys/types.h sys/socket.h" socklen_t
4432
4433     # Prefer arpa/inet.h over winsock2
4434     if check_header arpa/inet.h ; then
4435         check_func closesocket
4436     elif check_header winsock2.h ; then
4437         check_func_headers winsock2.h closesocket -lws2 &&
4438             network_extralibs="-lws2" ||
4439         { check_func_headers winsock2.h closesocket -lws2_32 &&
4440             network_extralibs="-lws2_32"; } || disable winsock2_h network
4441         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4442
4443         check_type ws2tcpip.h socklen_t
4444         check_type ws2tcpip.h "struct addrinfo"
4445         check_type ws2tcpip.h "struct group_source_req"
4446         check_type ws2tcpip.h "struct ip_mreq_source"
4447         check_type ws2tcpip.h "struct ipv6_mreq"
4448         check_type winsock2.h "struct pollfd"
4449         check_struct winsock2.h "struct sockaddr" sa_len
4450         check_type ws2tcpip.h "struct sockaddr_in6"
4451         check_type ws2tcpip.h "struct sockaddr_storage"
4452     else
4453         disable network
4454     fi
4455 fi
4456
4457 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4458 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4459 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4460 check_builtin sarestart signal.h "SA_RESTART"
4461 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4462
4463 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4464 check_func  ${malloc_prefix}memalign            && enable memalign
4465 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4466
4467 check_func  access
4468 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4469 check_func  fcntl
4470 check_func  fork
4471 check_func  gethrtime
4472 check_func  getopt
4473 check_func  getrusage
4474 check_func  gettimeofday
4475 check_func  isatty
4476 check_func  localtime_r
4477 check_func  mach_absolute_time
4478 check_func  mkstemp
4479 check_func  mmap
4480 check_func  mprotect
4481 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4482 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4483 check_func  sched_getaffinity
4484 check_func  setrlimit
4485 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4486 check_func  strerror_r
4487 check_func  sysconf
4488 check_func  sysctl
4489 check_func  usleep
4490
4491 check_func_headers conio.h kbhit
4492 check_func_headers io.h setmode
4493 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4494 check_func_headers stdlib.h getenv
4495
4496 check_func_headers windows.h GetProcessAffinityMask
4497 check_func_headers windows.h GetProcessTimes
4498 check_func_headers windows.h GetSystemTimeAsFileTime
4499 check_func_headers windows.h MapViewOfFile
4500 check_func_headers windows.h PeekNamedPipe
4501 check_func_headers windows.h SetConsoleTextAttribute
4502 check_func_headers windows.h Sleep
4503 check_func_headers windows.h VirtualAlloc
4504 check_func_headers glob.h glob
4505 enabled xlib &&
4506     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4507
4508 check_header cl/cl.h
4509 check_header direct.h
4510 check_header dlfcn.h
4511 check_header dxva.h
4512 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4513 check_header io.h
4514 check_header libcrystalhd/libcrystalhd_if.h
4515 check_header mach/mach_time.h
4516 check_header malloc.h
4517 check_header poll.h
4518 check_header sys/mman.h
4519 check_header sys/param.h
4520 check_header sys/resource.h
4521 check_header sys/select.h
4522 check_header sys/time.h
4523 check_header sys/un.h
4524 check_header termios.h
4525 check_header unistd.h
4526 check_header vdpau/vdpau.h
4527 check_header vdpau/vdpau_x11.h
4528 check_header VideoDecodeAcceleration/VDADecoder.h
4529 check_header windows.h
4530 check_header X11/extensions/XvMClib.h
4531 check_header asm/types.h
4532
4533 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4534 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4535 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4536
4537 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4538
4539 if ! disabled w32threads && ! enabled pthreads; then
4540     check_func_headers "windows.h process.h" _beginthreadex &&
4541         enable w32threads || disable w32threads
4542 fi
4543
4544 # check for some common methods of building with pthread support
4545 # do this before the optional library checks as some of them require pthreads
4546 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4547     enable pthreads
4548     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4549         add_cflags -pthread
4550         add_extralibs -pthread
4551     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4552         add_cflags -pthreads
4553         add_extralibs -pthreads
4554     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4555         add_extralibs -lpthreadGC2
4556     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4557         :
4558     elif ! check_func pthread_join && ! check_func pthread_create; then
4559         disable pthreads
4560     fi
4561     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4562 fi
4563
4564
4565 if enabled pthreads; then
4566   check_func pthread_cancel
4567 fi
4568
4569 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4570 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4571
4572 check_lib math.h sin -lm && LIBM="-lm"
4573 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4574
4575 atan2f_args=2
4576 ldexpf_args=2
4577 powf_args=2
4578
4579 for func in $MATH_FUNCS; do
4580     eval check_mathfunc $func \${${func}_args:-1}
4581 done
4582
4583 # these are off by default, so fail if requested and not available
4584 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4585 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4586                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4587                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4588 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4589 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4590 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4591 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4592 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4593 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4594 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4595 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4596 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4597                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4598                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4599 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4600 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4601 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4602 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"
4603 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4604 enabled fontconfig        && enable libfontconfig
4605 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4606 enabled libfreetype       && require_libfreetype
4607 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4608 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4609                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4610                                done || die "ERROR: libgsm not found"; }
4611 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4612 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4613 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4614 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4615 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4616 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4617 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4618 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4619                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4620                                die "ERROR: libopenjpeg not found"; }
4621 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4622 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4623 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4624 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4625 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4626 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4627 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4628 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4629 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4630 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4631     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4632     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4633 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4634 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4635                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4636                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4637 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4638 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4639 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4640 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4641 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4642 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4643 enabled libvpx            && {
4644     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4645                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4646     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 ||
4647                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4648     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4649     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; } }
4650 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4651 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4652 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4653                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4654                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4655 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4656                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4657                                die "ERROR: libx265 version must be >= 13."; }
4658 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4659 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4660 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4661 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4662 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4663                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4664                                die "ERROR: openal not found"; } &&
4665                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4666                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4667 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4668                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4669                                die "ERROR: opencl not found"; } &&
4670                              { ! enabled_any w32threads os2threads ||
4671                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4672                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4673                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4674                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4675 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4676                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4677                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4678                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4679                                die "ERROR: opengl not found."
4680                              }
4681 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4682                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4683                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4684                                die "ERROR: openssl not found"; }
4685 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4686
4687 if enabled gnutls; then
4688     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4689     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4690 fi
4691
4692 # libdc1394 check
4693 if enabled libdc1394; then
4694     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4695         enable libdc1394_2; } ||
4696     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4697         enable libdc1394_1; } ||
4698     die "ERROR: No version of libdc1394 found "
4699 fi
4700
4701 SDL_CONFIG="${cross_prefix}sdl-config"
4702 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4703     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4704     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4705     enable sdl
4706 else
4707   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4708     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4709     sdl_libs=$("${SDL_CONFIG}" --libs)
4710     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
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   fi
4715 fi
4716 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4717
4718 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4719 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4720 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4721 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4722 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4723
4724 check_header linux/fb.h
4725 check_header linux/videodev.h
4726 check_header linux/videodev2.h
4727 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4728
4729 check_header sys/videoio.h
4730
4731 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4732 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4733 # w32api 3.12 had it defined wrong
4734 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4735
4736 check_type "dshow.h" IBaseFilter
4737
4738 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4739 { check_header dev/bktr/ioctl_meteor.h &&
4740   check_header dev/bktr/ioctl_bt848.h; } ||
4741 { check_header machine/ioctl_meteor.h &&
4742   check_header machine/ioctl_bt848.h; } ||
4743 { check_header dev/video/meteor/ioctl_meteor.h &&
4744   check_header dev/video/bktr/ioctl_bt848.h; } ||
4745 check_header dev/ic/bt8xx.h
4746
4747 check_header sndio.h
4748 if check_struct sys/soundcard.h audio_buf_info bytes; then
4749     enable_safe sys/soundcard.h
4750 else
4751     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4752     #include <sys/soundcard.h>
4753     audio_buf_info abc;
4754 EOF
4755 fi
4756 check_header soundcard.h
4757
4758 enabled_any alsa_indev alsa_outdev &&
4759     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4760
4761 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4762     check_func jack_port_get_latency_range -ljack
4763
4764 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4765
4766 if enabled libcdio; then
4767     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4768     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4769     die "ERROR: libcdio-paranoia not found"
4770 fi
4771