Merge commit 'd5a55981986ac5d1a31aef3a8d16eaff8534a412'
[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-libbs2b         enable bs2b DSP library [no]
203   --enable-libcaca         enable textual display using libcaca
204   --enable-libcelt         enable CELT decoding via libcelt [no]
205   --enable-libcdio         enable audio CD grabbing with libcdio
206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
207                            and libraw1394 [no]
208   --enable-libfaac         enable AAC encoding via libfaac [no]
209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
211   --enable-libfreetype     enable libfreetype [no]
212   --enable-libgme          enable Game Music Emu via libgme [no]
213   --enable-libgsm          enable GSM de/encoding via libgsm [no]
214   --enable-libiec61883     enable iec61883 via libiec61883 [no]
215   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
216   --enable-libmodplug      enable ModPlug via libmodplug [no]
217   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
218   --enable-libnut          enable NUT (de)muxing via libnut,
219                            native (de)muxer exists [no]
220   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
221   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
222   --enable-libopencv       enable video filtering via libopencv [no]
223   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
224   --enable-libopus         enable Opus de/encoding via libopus [no]
225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
226   --enable-libquvi         enable quvi input via libquvi [no]
227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
230   --enable-libsoxr         enable Include libsoxr resampling [no]
231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
232   --enable-libssh          enable SFTP protocol via libssh [no]
233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
234   --enable-libtheora       enable Theora encoding via libtheora [no]
235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
238   --enable-libvidstab      enable video stabilization using vid.stab [no]
239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
242                            native implementation exists [no]
243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
245   --enable-libwebp         enable WebP encoding via libwebp [no]
246   --enable-libx264         enable H.264 encoding via x264 [no]
247   --enable-libx265         enable HEVC encoding via x265 [no]
248   --enable-libxavs         enable AVS encoding via xavs [no]
249   --enable-libxvid         enable Xvid encoding via xvidcore,
250                            native MPEG-4/Xvid encoder exists [no]
251   --enable-libzmq          enable message passing via libzmq [no]
252   --enable-libzvbi         enable teletext support via libzvbi [no]
253   --enable-decklink        enable Blackmagick DeckLink output [no]
254   --enable-openal          enable OpenAL 1.1 capture support [no]
255   --enable-opencl          enable OpenCL code
256   --enable-opengl          enable OpenGL rendering [no]
257   --enable-openssl         enable openssl [no]
258   --enable-x11grab         enable X11 grabbing [no]
259   --disable-xlib           disable xlib [autodetect]
260   --disable-zlib           disable zlib [autodetect]
261
262 Toolchain options:
263   --arch=ARCH              select architecture [$arch]
264   --cpu=CPU                select the minimum required CPU (affects
265                            instruction selection, may crash on older CPUs)
266   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
267   --progs-suffix=SUFFIX    program name suffix []
268   --enable-cross-compile   assume a cross-compiler is used
269   --sysroot=PATH           root of cross-build tree
270   --sysinclude=PATH        location of cross-build system headers
271   --target-os=OS           compiler targets OS [$target_os]
272   --target-exec=CMD        command to run executables on target
273   --target-path=DIR        path to view of build directory on target
274   --target-samples=DIR     path to samples directory on target
275   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
276   --toolchain=NAME         set tool defaults according to NAME
277   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
278   --nm=NM                  use nm tool NM [$nm_default]
279   --ar=AR                  use archive tool AR [$ar_default]
280   --as=AS                  use assembler AS [$as_default]
281   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
282   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
283   --cc=CC                  use C compiler CC [$cc_default]
284   --cxx=CXX                use C compiler CXX [$cxx_default]
285   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
286   --ld=LD                  use linker LD [$ld_default]
287   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
288   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
289   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
290   --host-cc=HOSTCC         use host C compiler HOSTCC
291   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
292   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
293   --host-ld=HOSTLD         use host linker HOSTLD
294   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
295   --host-libs=HLIBS        use libs HLIBS when linking for host
296   --host-os=OS             compiler host OS [$target_os]
297   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
298   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
299   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
300   --extra-libs=ELIBS       add ELIBS [$ELIBS]
301   --extra-version=STRING   version string suffix []
302   --optflags=OPTFLAGS      override optimization-related compiler flags
303   --build-suffix=SUFFIX    library name suffix []
304   --enable-pic             build position-independent code
305   --enable-thumb           compile for Thumb instruction set
306   --enable-lto             use link-time optimization
307
308 Advanced options (experts only):
309   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
310   --disable-symver         disable symbol versioning
311   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
312   --disable-safe-bitstream-reader
313                            disable buffer boundary checking in bitreaders
314                            (faster, but may crash)
315   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
316   --enable-sram            allow use of on-chip SRAM
317
318 Optimization options (experts only):
319   --disable-asm            disable all assembler optimizations
320   --disable-altivec        disable AltiVec optimizations
321   --disable-amd3dnow       disable 3DNow! optimizations
322   --disable-amd3dnowext    disable 3DNow! extended optimizations
323   --disable-mmx            disable MMX optimizations
324   --disable-mmxext         disable MMXEXT optimizations
325   --disable-sse            disable SSE optimizations
326   --disable-sse2           disable SSE2 optimizations
327   --disable-sse3           disable SSE3 optimizations
328   --disable-ssse3          disable SSSE3 optimizations
329   --disable-sse4           disable SSE4 optimizations
330   --disable-sse42          disable SSE4.2 optimizations
331   --disable-avx            disable AVX optimizations
332   --disable-xop            disable XOP optimizations
333   --disable-fma3           disable FMA3 optimizations
334   --disable-fma4           disable FMA4 optimizations
335   --disable-avx2           disable AVX2 optimizations
336   --disable-armv5te        disable armv5te optimizations
337   --disable-armv6          disable armv6 optimizations
338   --disable-armv6t2        disable armv6t2 optimizations
339   --disable-vfp            disable VFP optimizations
340   --disable-neon           disable NEON optimizations
341   --disable-inline-asm     disable use of inline assembler
342   --disable-yasm           disable use of yasm assembler
343   --disable-mips32r2       disable MIPS32R2 optimizations
344   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
345   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
346   --disable-mipsfpu        disable floating point MIPS optimizations
347   --disable-fast-unaligned consider unaligned accesses slow
348
349 Developer options (useful when working on FFmpeg itself):
350   --disable-debug          disable debugging symbols
351   --enable-debug=LEVEL     set the debug level [$debuglevel]
352   --disable-optimizations  disable compiler optimizations
353   --enable-extra-warnings  enable more compiler warnings
354   --disable-stripping      disable stripping of executables and shared libraries
355   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
356                            2 causes a slowdown at runtime.
357   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
358   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
359                            leaks and errors, using the specified valgrind binary.
360                            Cannot be combined with --target-exec
361   --enable-ftrapv          Trap arithmetic overflows
362   --samples=PATH           location of test samples for FATE, if not set use
363                            \$FATE_SAMPLES at make invocation time.
364   --enable-neon-clobber-test check NEON registers for clobbering (should be
365                            used only for debugging purposes)
366   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
367                            should be used only for debugging purposes)
368   --enable-random          randomly enable/disable components
369   --disable-random
370   --enable-random=LIST     randomly enable/disable specific components or
371   --disable-random=LIST    component groups. LIST is a comma-separated list
372                            of NAME[:PROB] entries where NAME is a component
373                            (group) and PROB the probability associated with
374                            NAME (default 0.5).
375   --random-seed=VALUE      seed value for --enable/disable-random
376
377 NOTE: Object files are built at the place where configure is launched.
378 EOF
379   exit 0
380 }
381
382 quotes='""'
383
384 log(){
385     echo "$@" >> $logfile
386 }
387
388 log_file(){
389     log BEGIN $1
390     pr -n -t $1 >> $logfile
391     log END $1
392 }
393
394 echolog(){
395     log "$@"
396     echo "$@"
397 }
398
399 warn(){
400     log "WARNING: $*"
401     WARNINGS="${WARNINGS}WARNING: $*\n"
402 }
403
404 die(){
405     echolog "$@"
406     cat <<EOF
407
408 If you think configure made a mistake, make sure you are using the latest
409 version from Git.  If the latest version fails, report the problem to the
410 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
411 EOF
412     if disabled logging; then
413         cat <<EOF
414 Rerun configure with logging enabled (do not use --disable-logging), and
415 include the log this produces with your report.
416 EOF
417     else
418         cat <<EOF
419 Include the log file "$logfile" produced by configure as this will help
420 solve the problem.
421 EOF
422     fi
423     exit 1
424 }
425
426 # Avoid locale weirdness, besides we really just want to translate ASCII.
427 toupper(){
428     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
429 }
430
431 tolower(){
432     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
433 }
434
435 c_escape(){
436     echo "$*" | sed 's/["\\]/\\\0/g'
437 }
438
439 sh_quote(){
440     v=$(echo "$1" | sed "s/'/'\\\\''/g")
441     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
442     echo "$v"
443 }
444
445 cleanws(){
446     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
447 }
448
449 filter(){
450     pat=$1
451     shift
452     for v; do
453         eval "case $v in $pat) echo $v ;; esac"
454     done
455 }
456
457 filter_out(){
458     pat=$1
459     shift
460     for v; do
461         eval "case $v in $pat) ;; *) echo $v ;; esac"
462     done
463 }
464
465 map(){
466     m=$1
467     shift
468     for v; do eval $m; done
469 }
470
471 add_suffix(){
472     suffix=$1
473     shift
474     for v; do echo ${v}${suffix}; done
475 }
476
477 set_all(){
478     value=$1
479     shift
480     for var in $*; do
481         eval $var=$value
482     done
483 }
484
485 set_weak(){
486     value=$1
487     shift
488     for var; do
489         eval : \${$var:=$value}
490     done
491 }
492
493 sanitize_var_name(){
494     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
495 }
496
497 set_safe(){
498     var=$1
499     shift
500     eval $(sanitize_var_name "$var")='$*'
501 }
502
503 get_safe(){
504     eval echo \$$(sanitize_var_name "$1")
505 }
506
507 pushvar(){
508     for pvar in $*; do
509         eval level=\${${pvar}_level:=0}
510         eval ${pvar}_${level}="\$$pvar"
511         eval ${pvar}_level=$(($level+1))
512     done
513 }
514
515 popvar(){
516     for pvar in $*; do
517         eval level=\${${pvar}_level:-0}
518         test $level = 0 && continue
519         eval level=$(($level-1))
520         eval $pvar="\${${pvar}_${level}}"
521         eval ${pvar}_level=$level
522         eval unset ${pvar}_${level}
523     done
524 }
525
526 enable(){
527     set_all yes $*
528 }
529
530 disable(){
531     set_all no $*
532 }
533
534 enable_weak(){
535     set_weak yes $*
536 }
537
538 disable_weak(){
539     set_weak no $*
540 }
541
542 enable_safe(){
543     for var; do
544         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
545     done
546 }
547
548 disable_safe(){
549     for var; do
550         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
551     done
552 }
553
554 do_enable_deep(){
555     for var; do
556         enabled $var && continue
557         eval sel="\$${var}_select"
558         eval sgs="\$${var}_suggest"
559         pushvar var sgs
560         enable_deep $sel
561         popvar sgs
562         enable_deep_weak $sgs
563         popvar var
564     done
565 }
566
567 enable_deep(){
568     do_enable_deep $*
569     enable $*
570 }
571
572 enable_deep_weak(){
573     for var; do
574         disabled $var && continue
575         pushvar var
576         do_enable_deep $var
577         popvar var
578         enable_weak $var
579     done
580 }
581
582 enabled(){
583     test "${1#!}" = "$1" && op== || op=!=
584     eval test "x\$${1#!}" $op "xyes"
585 }
586
587 disabled(){
588     test "${1#!}" = "$1" && op== || op=!=
589     eval test "x\$${1#!}" $op "xno"
590 }
591
592 enabled_all(){
593     for opt; do
594         enabled $opt || return 1
595     done
596 }
597
598 disabled_all(){
599     for opt; do
600         disabled $opt || return 1
601     done
602 }
603
604 enabled_any(){
605     for opt; do
606         enabled $opt && return 0
607     done
608 }
609
610 disabled_any(){
611     for opt; do
612         disabled $opt && return 0
613     done
614     return 1
615 }
616
617 set_default(){
618     for opt; do
619         eval : \${$opt:=\$${opt}_default}
620     done
621 }
622
623 is_in(){
624     value=$1
625     shift
626     for var in $*; do
627         [ $var = $value ] && return 0
628     done
629     return 1
630 }
631
632 do_check_deps(){
633     for cfg; do
634         cfg="${cfg#!}"
635         enabled ${cfg}_checking && die "Circular dependency for $cfg."
636         disabled ${cfg}_checking && continue
637         enable ${cfg}_checking
638         append allopts $cfg
639
640         eval dep_all="\$${cfg}_deps"
641         eval dep_any="\$${cfg}_deps_any"
642         eval dep_sel="\$${cfg}_select"
643         eval dep_sgs="\$${cfg}_suggest"
644         eval dep_ifa="\$${cfg}_if"
645         eval dep_ifn="\$${cfg}_if_any"
646
647         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
648         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
649         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
650
651         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
652         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
653         enabled_all  $dep_all || disable $cfg
654         enabled_any  $dep_any || disable $cfg
655         disabled_any $dep_sel && disable $cfg
656
657         if enabled $cfg; then
658             enable_deep $dep_sel
659             enable_deep_weak $dep_sgs
660         fi
661
662         disable ${cfg}_checking
663     done
664 }
665
666 check_deps(){
667     unset allopts
668
669     do_check_deps "$@"
670
671     for cfg in $allopts; do
672         enabled $cfg || continue
673         eval dep_extralibs="\$${cfg}_extralibs"
674         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
675     done
676 }
677
678 print_config(){
679     pfx=$1
680     files=$2
681     shift 2
682     map 'eval echo "$v \${$v:-no}"' "$@" |
683     awk "BEGIN { split(\"$files\", files) }
684         {
685             c = \"$pfx\" toupper(\$1);
686             v = \$2;
687             sub(/yes/, 1, v);
688             sub(/no/,  0, v);
689             for (f in files) {
690                 file = files[f];
691                 if (file ~ /\\.h\$/) {
692                     printf(\"#define %s %d\\n\", c, v) >>file;
693                 } else if (file ~ /\\.asm\$/) {
694                     printf(\"%%define %s %d\\n\", c, v) >>file;
695                 } else if (file ~ /\\.mak\$/) {
696                     n = -v ? \"\" : \"!\";
697                     printf(\"%s%s=yes\\n\", n, c) >>file;
698                 } else if (file ~ /\\.texi\$/) {
699                     pre = -v ? \"\" : \"@c \";
700                     yesno = \$2;
701                     c2 = tolower(c);
702                     gsub(/_/, \"-\", c2);
703                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
704                 }
705             }
706         }"
707 }
708
709 print_enabled(){
710     suf=$1
711     shift
712     for v; do
713         enabled $v && printf "%s\n" ${v%$suf};
714     done
715 }
716
717 append(){
718     var=$1
719     shift
720     eval "$var=\"\$$var $*\""
721 }
722
723 prepend(){
724     var=$1
725     shift
726     eval "$var=\"$* \$$var\""
727 }
728
729 unique(){
730     var=$1
731     uniq_list=""
732     for tok in $(eval echo \$$var); do
733         uniq_list="$(filter_out $tok $uniq_list) $tok"
734     done
735     eval "$var=\"${uniq_list}\""
736 }
737
738 add_cppflags(){
739     append CPPFLAGS "$@"
740 }
741
742 add_cflags(){
743     append CFLAGS $($cflags_filter "$@")
744 }
745
746 add_cxxflags(){
747     append CXXFLAGS $($cflags_filter "$@")
748 }
749
750 add_asflags(){
751     append ASFLAGS $($asflags_filter "$@")
752 }
753
754 add_ldflags(){
755     append LDFLAGS $($ldflags_filter "$@")
756 }
757
758 add_stripflags(){
759     append ASMSTRIPFLAGS "$@"
760 }
761
762 add_extralibs(){
763     prepend extralibs $($ldflags_filter "$@")
764 }
765
766 add_host_cppflags(){
767     append host_cppflags "$@"
768 }
769
770 add_host_cflags(){
771     append host_cflags $($host_cflags_filter "$@")
772 }
773
774 add_host_ldflags(){
775     append host_ldflags $($host_ldflags_filter "$@")
776 }
777
778 add_compat(){
779     append compat_objs $1
780     shift
781     map 'add_cppflags -D$v' "$@"
782 }
783
784 check_cmd(){
785     log "$@"
786     "$@" >> $logfile 2>&1
787 }
788
789 check_stat(){
790     log check_stat "$@"
791     stat "$1" >> $logfile 2>&1
792 }
793
794 cc_o(){
795     eval printf '%s\\n' $CC_O
796 }
797
798 cc_e(){
799     eval printf '%s\\n' $CC_E
800 }
801
802 check_cc(){
803     log check_cc "$@"
804     cat > $TMPC
805     log_file $TMPC
806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
807 }
808
809 check_cxx(){
810     log check_cxx "$@"
811     cat > $TMPCPP
812     log_file $TMPCPP
813     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
814 }
815
816 check_oc(){
817     log check_oc "$@"
818     cat > $TMPM
819     log_file $TMPM
820     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
821 }
822
823 check_cpp(){
824     log check_cpp "$@"
825     cat > $TMPC
826     log_file $TMPC
827     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
828 }
829
830 as_o(){
831     eval printf '%s\\n' $AS_O
832 }
833
834 check_as(){
835     log check_as "$@"
836     cat > $TMPS
837     log_file $TMPS
838     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
839 }
840
841 check_inline_asm(){
842     log check_inline_asm "$@"
843     name="$1"
844     code="$2"
845     shift 2
846     disable $name
847     check_cc "$@" <<EOF && enable $name
848 void foo(void){ __asm__ volatile($code); }
849 EOF
850 }
851
852 check_insn(){
853     log check_insn "$@"
854     check_inline_asm ${1}_inline "\"$2\""
855     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
856 }
857
858 check_yasm(){
859     log check_yasm "$@"
860     echo "$1" > $TMPS
861     log_file $TMPS
862     shift 1
863     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
864 }
865
866 ld_o(){
867     eval printf '%s\\n' $LD_O
868 }
869
870 check_ld(){
871     log check_ld "$@"
872     type=$1
873     shift 1
874     flags=$(filter_out '-l*|*.so' $@)
875     libs=$(filter '-l*|*.so' $@)
876     check_$type $($cflags_filter $flags) || return
877     flags=$($ldflags_filter $flags)
878     libs=$($ldflags_filter $libs)
879     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
880 }
881
882 print_include(){
883     hdr=$1
884     test "${hdr%.h}" = "${hdr}" &&
885         echo "#include $hdr"    ||
886         echo "#include <$hdr>"
887 }
888
889 check_code(){
890     log check_code "$@"
891     check=$1
892     headers=$2
893     code=$3
894     shift 3
895     {
896         for hdr in $headers; do
897             print_include $hdr
898         done
899         echo "int main(void) { $code; return 0; }"
900     } | check_$check "$@"
901 }
902
903 check_cppflags(){
904     log check_cppflags "$@"
905     check_cc "$@" <<EOF && append CPPFLAGS "$@"
906 int x;
907 EOF
908 }
909
910 test_cflags(){
911     log test_cflags "$@"
912     set -- $($cflags_filter "$@")
913     check_cc "$@" <<EOF
914 int x;
915 EOF
916 }
917
918 check_cflags(){
919     log check_cflags "$@"
920     test_cflags "$@" && add_cflags "$@"
921 }
922
923 check_cxxflags(){
924     log check_cxxflags "$@"
925     set -- $($cflags_filter "$@")
926     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
927 int x;
928 EOF
929 }
930
931 test_ldflags(){
932     log test_ldflags "$@"
933     check_ld "cc" "$@" <<EOF
934 int main(void){ return 0; }
935 EOF
936 }
937
938 check_ldflags(){
939     log check_ldflags "$@"
940     test_ldflags "$@" && add_ldflags "$@"
941 }
942
943 test_stripflags(){
944     log test_stripflags "$@"
945     # call check_cc to get a fresh TMPO
946     check_cc <<EOF
947 int main(void) { return 0; }
948 EOF
949     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
950 }
951
952 check_stripflags(){
953     log check_stripflags "$@"
954     test_stripflags "$@" && add_stripflags "$@"
955 }
956
957 check_header(){
958     log check_header "$@"
959     header=$1
960     shift
961     disable_safe $header
962     check_cpp "$@" <<EOF && enable_safe $header
963 #include <$header>
964 int x;
965 EOF
966 }
967
968 check_header_oc(){
969     log check_header_oc "$@"
970     rm -f -- "$TMPO"
971     header=$1
972     shift
973     disable_safe $header
974     {
975        echo "#include <$header>"
976        echo "int main(void) { return 0; }"
977     } | check_oc && check_stat "$TMPO" && enable_safe $headers
978 }
979
980 check_func(){
981     log check_func "$@"
982     func=$1
983     shift
984     disable $func
985     check_ld "cc" "$@" <<EOF && enable $func
986 extern int $func();
987 int main(void){ $func(); }
988 EOF
989 }
990
991 check_mathfunc(){
992     log check_mathfunc "$@"
993     func=$1
994     narg=$2
995     shift 2
996     test $narg = 2 && args="f, g" || args="f"
997     disable $func
998     check_ld "cc" "$@" <<EOF && enable $func
999 #include <math.h>
1000 float foo(float f, float g) { return $func($args); }
1001 int main(void){ return (int) foo; }
1002 EOF
1003 }
1004
1005 check_func_headers(){
1006     log check_func_headers "$@"
1007     headers=$1
1008     funcs=$2
1009     shift 2
1010     {
1011         for hdr in $headers; do
1012             print_include $hdr
1013         done
1014         for func in $funcs; do
1015             echo "long check_$func(void) { return (long) $func; }"
1016         done
1017         echo "int main(void) { return 0; }"
1018     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1019 }
1020
1021 check_class_headers_cpp(){
1022     log check_class_headers_cpp "$@"
1023     headers=$1
1024     classes=$2
1025     shift 2
1026     {
1027         for hdr in $headers; do
1028             echo "#include <$hdr>"
1029         done
1030         echo "int main(void) { "
1031         i=1
1032         for class in $classes; do
1033             echo "$class obj$i;"
1034             i=$(expr $i + 1)
1035         done
1036         echo "return 0; }"
1037     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1038 }
1039
1040 check_cpp_condition(){
1041     log check_cpp_condition "$@"
1042     header=$1
1043     condition=$2
1044     shift 2
1045     check_cpp "$@" <<EOF
1046 #include <$header>
1047 #if !($condition)
1048 #error "unsatisfied condition: $condition"
1049 #endif
1050 EOF
1051 }
1052
1053 check_lib(){
1054     log check_lib "$@"
1055     header="$1"
1056     func="$2"
1057     shift 2
1058     check_header $header && check_func $func "$@" && add_extralibs "$@"
1059 }
1060
1061 check_lib2(){
1062     log check_lib2 "$@"
1063     headers="$1"
1064     funcs="$2"
1065     shift 2
1066     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1067 }
1068
1069 check_lib_cpp(){
1070     log check_lib_cpp "$@"
1071     headers="$1"
1072     classes="$2"
1073     shift 2
1074     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1075 }
1076
1077 check_pkg_config(){
1078     log check_pkg_config "$@"
1079     pkgandversion="$1"
1080     pkg="${1%% *}"
1081     headers="$2"
1082     funcs="$3"
1083     shift 3
1084     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1085     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1086     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1087     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1088         set_safe ${pkg}_cflags $pkg_cflags   &&
1089         set_safe ${pkg}_libs   $pkg_libs
1090 }
1091
1092 check_exec(){
1093     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1094 }
1095
1096 check_exec_crash(){
1097     code=$(cat)
1098
1099     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1100     # are safe but may not be available everywhere.  Thus we use
1101     # raise(SIGTERM) instead.  The check is run in a subshell so we
1102     # can redirect the "Terminated" message from the shell.  SIGBUS
1103     # is not defined by standard C so it is used conditionally.
1104
1105     (check_exec "$@") >> $logfile 2>&1 <<EOF
1106 #include <signal.h>
1107 static void sighandler(int sig){
1108     raise(SIGTERM);
1109 }
1110 int foo(void){
1111     $code
1112 }
1113 int (*func_ptr)(void) = foo;
1114 int main(void){
1115     signal(SIGILL, sighandler);
1116     signal(SIGFPE, sighandler);
1117     signal(SIGSEGV, sighandler);
1118 #ifdef SIGBUS
1119     signal(SIGBUS, sighandler);
1120 #endif
1121     return func_ptr();
1122 }
1123 EOF
1124 }
1125
1126 check_type(){
1127     log check_type "$@"
1128     headers=$1
1129     type=$2
1130     shift 2
1131     disable_safe "$type"
1132     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1133 }
1134
1135 check_struct(){
1136     log check_struct "$@"
1137     headers=$1
1138     struct=$2
1139     member=$3
1140     shift 3
1141     disable_safe "${struct}_${member}"
1142     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1143         enable_safe "${struct}_${member}"
1144 }
1145
1146 check_builtin(){
1147     log check_builtin "$@"
1148     name=$1
1149     headers=$2
1150     builtin=$3
1151     shift 3
1152     disable "$name"
1153     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1154 }
1155
1156 check_compile_assert(){
1157     log check_compile_assert "$@"
1158     name=$1
1159     headers=$2
1160     condition=$3
1161     shift 3
1162     disable "$name"
1163     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1164 }
1165
1166 require(){
1167     name="$1"
1168     header="$2"
1169     func="$3"
1170     shift 3
1171     check_lib $header $func "$@" || die "ERROR: $name not found"
1172 }
1173
1174 require2(){
1175     name="$1"
1176     headers="$2"
1177     func="$3"
1178     shift 3
1179     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1180 }
1181
1182 require_cpp(){
1183     name="$1"
1184     headers="$2"
1185     classes="$3"
1186     shift 3
1187     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require_pkg_config(){
1191     pkg="$1"
1192     check_pkg_config "$@" || die "ERROR: $pkg not found"
1193     add_cflags    $(get_safe ${pkg}_cflags)
1194     add_extralibs $(get_safe ${pkg}_libs)
1195 }
1196
1197 require_libfreetype(){
1198     log require_libfreetype "$@"
1199     pkg="freetype2"
1200     check_cmd $pkg_config --exists --print-errors $pkg \
1201       || die "ERROR: $pkg not found"
1202     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1203     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1204     {
1205         echo "#include <ft2build.h>"
1206         echo "#include FT_FREETYPE_H"
1207         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1208         echo "int main(void) { return 0; }"
1209     } | check_ld "cc" $pkg_cflags $pkg_libs \
1210       && set_safe ${pkg}_cflags $pkg_cflags \
1211       && set_safe ${pkg}_libs   $pkg_libs \
1212       || die "ERROR: $pkg not found"
1213     add_cflags    $(get_safe ${pkg}_cflags)
1214     add_extralibs $(get_safe ${pkg}_libs)
1215 }
1216
1217 hostcc_e(){
1218     eval printf '%s\\n' $HOSTCC_E
1219 }
1220
1221 hostcc_o(){
1222     eval printf '%s\\n' $HOSTCC_O
1223 }
1224
1225 check_host_cc(){
1226     log check_host_cc "$@"
1227     cat > $TMPC
1228     log_file $TMPC
1229     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1230 }
1231
1232 check_host_cpp(){
1233     log check_host_cpp "$@"
1234     cat > $TMPC
1235     log_file $TMPC
1236     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1237 }
1238
1239 check_host_cppflags(){
1240     log check_host_cppflags "$@"
1241     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1242 int x;
1243 EOF
1244 }
1245
1246 check_host_cflags(){
1247     log check_host_cflags "$@"
1248     set -- $($host_cflags_filter "$@")
1249     check_host_cc "$@" <<EOF && append host_cflags "$@"
1250 int x;
1251 EOF
1252 }
1253
1254 check_host_cpp_condition(){
1255     log check_host_cpp_condition "$@"
1256     header=$1
1257     condition=$2
1258     shift 2
1259     check_host_cpp "$@" <<EOF
1260 #include <$header>
1261 #if !($condition)
1262 #error "unsatisfied condition: $condition"
1263 #endif
1264 EOF
1265 }
1266
1267 apply(){
1268     file=$1
1269     shift
1270     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1271 }
1272
1273 cp_if_changed(){
1274     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1275     mkdir -p "$(dirname $2)"
1276     $cp_f "$1" "$2"
1277 }
1278
1279 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1280 # system-dependent things.
1281
1282 COMPONENT_LIST="
1283     bsfs
1284     decoders
1285     demuxers
1286     encoders
1287     filters
1288     hwaccels
1289     indevs
1290     muxers
1291     outdevs
1292     parsers
1293     protocols
1294 "
1295
1296 EXAMPLE_LIST="
1297     avio_reading_example
1298     decoding_encoding_example
1299     demuxing_decoding_example
1300     filter_audio_example
1301     filtering_audio_example
1302     filtering_video_example
1303     metadata_example
1304     muxing_example
1305     remuxing_example
1306     resampling_audio_example
1307     scaling_video_example
1308     transcode_aac_example
1309     transcoding_example
1310 "
1311
1312 EXTERNAL_LIBRARY_LIST="
1313     avisynth
1314     bzlib
1315     crystalhd
1316     decklink
1317     frei0r
1318     gnutls
1319     iconv
1320     ladspa
1321     libaacplus
1322     libass
1323     libbluray
1324     libbs2b
1325     libcaca
1326     libcdio
1327     libcelt
1328     libdc1394
1329     libfaac
1330     libfdk_aac
1331     libflite
1332     libfontconfig
1333     libfreetype
1334     libgme
1335     libgsm
1336     libiec61883
1337     libilbc
1338     libmodplug
1339     libmp3lame
1340     libnut
1341     libopencore_amrnb
1342     libopencore_amrwb
1343     libopencv
1344     libopenjpeg
1345     libopus
1346     libpulse
1347     libquvi
1348     librtmp
1349     libschroedinger
1350     libshine
1351     libsoxr
1352     libspeex
1353     libssh
1354     libstagefright_h264
1355     libtheora
1356     libtwolame
1357     libutvideo
1358     libv4l2
1359     libvidstab
1360     libvo_aacenc
1361     libvo_amrwbenc
1362     libvorbis
1363     libvpx
1364     libwavpack
1365     libwebp
1366     libx264
1367     libx265
1368     libxavs
1369     libxvid
1370     libzmq
1371     libzvbi
1372     openal
1373     opencl
1374     opengl
1375     openssl
1376     x11grab
1377     xlib
1378     zlib
1379 "
1380
1381 DOCUMENT_LIST="
1382     doc
1383     htmlpages
1384     manpages
1385     podpages
1386     txtpages
1387 "
1388
1389 FEATURE_LIST="
1390     ftrapv
1391     gray
1392     hardcoded_tables
1393     runtime_cpudetect
1394     safe_bitstream_reader
1395     shared
1396     small
1397     sram
1398     static
1399     swscale_alpha
1400 "
1401
1402 HWACCEL_LIST="
1403     dxva2
1404     vaapi
1405     vda
1406     vdpau
1407     xvmc
1408 "
1409
1410 LIBRARY_LIST="
1411     avcodec
1412     avdevice
1413     avfilter
1414     avformat
1415     avresample
1416     avutil
1417     postproc
1418     swresample
1419     swscale
1420 "
1421
1422 LICENSE_LIST="
1423     gpl
1424     nonfree
1425     version3
1426 "
1427
1428 PROGRAM_LIST="
1429     ffplay
1430     ffprobe
1431     ffserver
1432     ffmpeg
1433 "
1434
1435 SUBSYSTEM_LIST="
1436     dct
1437     dwt
1438     error_resilience
1439     fast_unaligned
1440     fft
1441     lsp
1442     lzo
1443     mdct
1444     network
1445     rdft
1446 "
1447
1448 CONFIG_LIST="
1449     $COMPONENT_LIST
1450     $DOCUMENT_LIST
1451     $EXAMPLE_LIST
1452     $EXTERNAL_LIBRARY_LIST
1453     $FEATURE_LIST
1454     $HWACCEL_LIST
1455     $LICENSE_LIST
1456     $LIBRARY_LIST
1457     $PROGRAM_LIST
1458     $SUBSYSTEM_LIST
1459     fontconfig
1460     incompatible_libav_abi
1461     memalign_hack
1462     memory_poisoning
1463     neon_clobber_test
1464     pic
1465     pod2man
1466     raise_major
1467     thumb
1468     xmm_clobber_test
1469 "
1470
1471 THREADS_LIST="
1472     pthreads
1473     os2threads
1474     w32threads
1475 "
1476
1477 ATOMICS_LIST="
1478     atomics_gcc
1479     atomics_suncc
1480     atomics_win32
1481 "
1482
1483 ARCH_LIST="
1484     aarch64
1485     alpha
1486     arm
1487     avr32
1488     avr32_ap
1489     avr32_uc
1490     bfin
1491     ia64
1492     m68k
1493     mips
1494     mips64
1495     parisc
1496     ppc
1497     ppc64
1498     s390
1499     sh4
1500     sparc
1501     sparc64
1502     tilegx
1503     tilepro
1504     tomi
1505     x86
1506     x86_32
1507     x86_64
1508 "
1509
1510 ARCH_EXT_LIST_ARM="
1511     armv5te
1512     armv6
1513     armv6t2
1514     armv8
1515     neon
1516     vfp
1517     vfpv3
1518 "
1519
1520 ARCH_EXT_LIST_MIPS="
1521     mipsfpu
1522     mips32r2
1523     mipsdspr1
1524     mipsdspr2
1525 "
1526
1527 ARCH_EXT_LIST_X86_SIMD="
1528     amd3dnow
1529     amd3dnowext
1530     avx
1531     avx2
1532     fma3
1533     fma4
1534     mmx
1535     mmxext
1536     sse
1537     sse2
1538     sse3
1539     sse4
1540     sse42
1541     ssse3
1542     xop
1543 "
1544
1545 ARCH_EXT_LIST_PPC="
1546     altivec
1547     dcbzl
1548     ldbrx
1549     ppc4xx
1550 "
1551
1552 ARCH_EXT_LIST_X86="
1553     $ARCH_EXT_LIST_X86_SIMD
1554     cpunop
1555     i686
1556 "
1557
1558 ARCH_EXT_LIST="
1559     $ARCH_EXT_LIST_ARM
1560     $ARCH_EXT_LIST_PPC
1561     $ARCH_EXT_LIST_X86
1562     $ARCH_EXT_LIST_MIPS
1563     loongson
1564 "
1565
1566 ARCH_FEATURES="
1567     aligned_stack
1568     fast_64bit
1569     fast_clz
1570     fast_cmov
1571     local_aligned_8
1572     local_aligned_16
1573     local_aligned_32
1574 "
1575
1576 BUILTIN_LIST="
1577     atomic_cas_ptr
1578     machine_rw_barrier
1579     MemoryBarrier
1580     mm_empty
1581     rdtsc
1582     sarestart
1583     sync_val_compare_and_swap
1584 "
1585 HAVE_LIST_CMDLINE="
1586     inline_asm
1587     symver
1588     yasm
1589 "
1590
1591 HAVE_LIST_PUB="
1592     bigendian
1593     fast_unaligned
1594     incompatible_libav_abi
1595 "
1596
1597 HEADERS_LIST="
1598     alsa_asoundlib_h
1599     altivec_h
1600     arpa_inet_h
1601     asm_types_h
1602     cdio_paranoia_h
1603     cdio_paranoia_paranoia_h
1604     CL_cl_h
1605     dev_bktr_ioctl_bt848_h
1606     dev_bktr_ioctl_meteor_h
1607     dev_ic_bt8xx_h
1608     dev_video_bktr_ioctl_bt848_h
1609     dev_video_meteor_ioctl_meteor_h
1610     direct_h
1611     dlfcn_h
1612     dxva_h
1613     ES2_gl_h
1614     gsm_h
1615     io_h
1616     mach_mach_time_h
1617     machine_ioctl_bt848_h
1618     machine_ioctl_meteor_h
1619     malloc_h
1620     openjpeg_1_5_openjpeg_h
1621     OpenGL_gl3_h
1622     poll_h
1623     sndio_h
1624     soundcard_h
1625     sys_mman_h
1626     sys_param_h
1627     sys_resource_h
1628     sys_select_h
1629     sys_soundcard_h
1630     sys_time_h
1631     sys_un_h
1632     sys_videoio_h
1633     termios_h
1634     unistd_h
1635     windows_h
1636     winsock2_h
1637 "
1638
1639 MATH_FUNCS="
1640     atanf
1641     atan2f
1642     cbrt
1643     cbrtf
1644     cosf
1645     exp2
1646     exp2f
1647     expf
1648     isinf
1649     isnan
1650     ldexpf
1651     llrint
1652     llrintf
1653     log2
1654     log2f
1655     log10f
1656     lrint
1657     lrintf
1658     powf
1659     rint
1660     round
1661     roundf
1662     sinf
1663     trunc
1664     truncf
1665 "
1666
1667 SYSTEM_FUNCS="
1668     access
1669     aligned_malloc
1670     clock_gettime
1671     closesocket
1672     CommandLineToArgvW
1673     CoTaskMemFree
1674     CryptGenRandom
1675     dlopen
1676     fcntl
1677     flt_lim
1678     fork
1679     getaddrinfo
1680     gethrtime
1681     getopt
1682     GetProcessAffinityMask
1683     GetProcessMemoryInfo
1684     GetProcessTimes
1685     getrusage
1686     getservbyport
1687     GetSystemTimeAsFileTime
1688     gettimeofday
1689     glob
1690     glXGetProcAddress
1691     inet_aton
1692     isatty
1693     jack_port_get_latency_range
1694     kbhit
1695     localtime_r
1696     lzo1x_999_compress
1697     mach_absolute_time
1698     MapViewOfFile
1699     memalign
1700     mkstemp
1701     mmap
1702     mprotect
1703     nanosleep
1704     PeekNamedPipe
1705     posix_memalign
1706     pthread_cancel
1707     sched_getaffinity
1708     SetConsoleTextAttribute
1709     setmode
1710     setrlimit
1711     Sleep
1712     strerror_r
1713     sysconf
1714     sysctl
1715     usleep
1716     VirtualAlloc
1717     wglGetProcAddress
1718 "
1719
1720 TOOLCHAIN_FEATURES="
1721     as_dn_directive
1722     as_func
1723     asm_mod_q
1724     attribute_may_alias
1725     attribute_packed
1726     ebp_available
1727     ebx_available
1728     gnu_as
1729     gnu_windres
1730     ibm_asm
1731     inline_asm_labels
1732     inline_asm_nonlocal_labels
1733     inline_asm_direct_symbol_refs
1734     pragma_deprecated
1735     rsync_contimeout
1736     symver_asm_label
1737     symver_gnu_asm
1738     vfp_args
1739     xform_asm
1740     xmm_clobbers
1741 "
1742
1743 TYPES_LIST="
1744     socklen_t
1745     struct_addrinfo
1746     struct_group_source_req
1747     struct_ip_mreq_source
1748     struct_ipv6_mreq
1749     struct_pollfd
1750     struct_rusage_ru_maxrss
1751     struct_sctp_event_subscribe
1752     struct_sockaddr_in6
1753     struct_sockaddr_sa_len
1754     struct_sockaddr_storage
1755     struct_stat_st_mtim_tv_nsec
1756     struct_v4l2_frmivalenum_discrete
1757 "
1758
1759 HAVE_LIST="
1760     $ARCH_EXT_LIST
1761     $(add_suffix _external $ARCH_EXT_LIST)
1762     $(add_suffix _inline   $ARCH_EXT_LIST)
1763     $ARCH_FEATURES
1764     $ATOMICS_LIST
1765     $BUILTIN_LIST
1766     $HAVE_LIST_CMDLINE
1767     $HAVE_LIST_PUB
1768     $HEADERS_LIST
1769     $MATH_FUNCS
1770     $SYSTEM_FUNCS
1771     $THREADS_LIST
1772     $TOOLCHAIN_FEATURES
1773     $TYPES_LIST
1774     atomics_native
1775     dos_paths
1776     dxva2api_cobj
1777     dxva2_lib
1778     libc_msvcrt
1779     libdc1394_1
1780     libdc1394_2
1781     makeinfo
1782     perl
1783     pod2man
1784     sdl
1785     texi2html
1786     threads
1787     vdpau_x11
1788     xlib
1789 "
1790
1791 # options emitted with CONFIG_ prefix but not available on the command line
1792 CONFIG_EXTRA="
1793     aandcttables
1794     ac3dsp
1795     audio_frame_queue
1796     cabac
1797     dsputil
1798     exif
1799     frame_thread_encoder
1800     gcrypt
1801     golomb
1802     gplv3
1803     h263dsp
1804     h264chroma
1805     h264dsp
1806     h264pred
1807     h264qpel
1808     hpeldsp
1809     huffman
1810     huffyuvdsp
1811     huffyuvencdsp
1812     intrax8
1813     lgplv3
1814     llviddsp
1815     lpc
1816     mpegaudio
1817     mpegaudiodsp
1818     mpegvideo
1819     mpegvideoenc
1820     nettle
1821     qpeldsp
1822     rangecoder
1823     riffdec
1824     riffenc
1825     rtpdec
1826     rtpenc_chain
1827     sinewin
1828     tpeldsp
1829     videodsp
1830     vp3dsp
1831 "
1832
1833 CMDLINE_SELECT="
1834     $ARCH_EXT_LIST
1835     $CONFIG_LIST
1836     $HAVE_LIST_CMDLINE
1837     $THREADS_LIST
1838     asm
1839     cross_compile
1840     debug
1841     extra_warnings
1842     logging
1843     lto
1844     optimizations
1845     rpath
1846     stripping
1847 "
1848
1849 PATHS_LIST="
1850     bindir
1851     datadir
1852     docdir
1853     incdir
1854     libdir
1855     mandir
1856     prefix
1857     shlibdir
1858 "
1859
1860 CMDLINE_SET="
1861     $PATHS_LIST
1862     ar
1863     arch
1864     as
1865     assert_level
1866     build_suffix
1867     cc
1868     cpu
1869     cross_prefix
1870     cxx
1871     dep_cc
1872     extra_version
1873     gas
1874     host_cc
1875     host_cflags
1876     host_ld
1877     host_ldflags
1878     host_libs
1879     host_os
1880     install
1881     ld
1882     logfile
1883     malloc_prefix
1884     nm
1885     optflags
1886     pkg_config
1887     pkg_config_flags
1888     progs_suffix
1889     random_seed
1890     ranlib
1891     samples
1892     strip
1893     sysinclude
1894     sysroot
1895     target_exec
1896     target_os
1897     target_path
1898     target_samples
1899     tempprefix
1900     toolchain
1901     valgrind
1902     yasmexe
1903 "
1904
1905 CMDLINE_APPEND="
1906     extra_cflags
1907     extra_cxxflags
1908     host_cppflags
1909 "
1910
1911 # code dependency declarations
1912
1913 # architecture extensions
1914
1915 armv5te_deps="arm"
1916 armv6_deps="arm"
1917 armv6t2_deps="arm"
1918 armv8_deps="aarch64"
1919 neon_deps_any="aarch64 arm"
1920 vfp_deps_any="aarch64 arm"
1921 vfpv3_deps="vfp"
1922
1923 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1924
1925 mipsfpu_deps="mips"
1926 mips32r2_deps="mips"
1927 mipsdspr1_deps="mips"
1928 mipsdspr2_deps="mips"
1929
1930 altivec_deps="ppc"
1931 ppc4xx_deps="ppc"
1932
1933 cpunop_deps="i686"
1934 x86_64_select="i686"
1935 x86_64_suggest="fast_cmov"
1936
1937 amd3dnow_deps="mmx"
1938 amd3dnowext_deps="amd3dnow"
1939 i686_deps="x86"
1940 mmx_deps="x86"
1941 mmxext_deps="mmx"
1942 sse_deps="mmxext"
1943 sse2_deps="sse"
1944 sse3_deps="sse2"
1945 ssse3_deps="sse3"
1946 sse4_deps="ssse3"
1947 sse42_deps="sse4"
1948 avx_deps="sse42"
1949 xop_deps="avx"
1950 fma3_deps="avx"
1951 fma4_deps="avx"
1952 avx2_deps="avx"
1953
1954 mmx_external_deps="yasm"
1955 mmx_inline_deps="inline_asm"
1956 mmx_suggest="mmx_external mmx_inline"
1957
1958 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1959     eval dep=\$${ext}_deps
1960     eval ${ext}_external_deps='"${dep}_external"'
1961     eval ${ext}_inline_deps='"${dep}_inline"'
1962     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1963 done
1964
1965 aligned_stack_if_any="aarch64 ppc x86"
1966 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1967 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1968 fast_unaligned_if_any="aarch64 ppc x86"
1969
1970 need_memalign="altivec neon sse"
1971
1972 # system capabilities
1973
1974 symver_if_any="symver_asm_label symver_gnu_asm"
1975
1976 # threading support
1977 atomics_gcc_if="sync_val_compare_and_swap"
1978 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1979 atomics_win32_if="MemoryBarrier"
1980 atomics_native_if_any="$ATOMICS_LIST"
1981 w32threads_deps="atomics_native"
1982 threads_if_any="$THREADS_LIST"
1983
1984 # subsystems
1985 dct_select="rdft"
1986 error_resilience_select="dsputil"
1987 frame_thread_encoder_deps="encoders threads"
1988 mdct_select="fft"
1989 rdft_select="fft"
1990 mpegaudio_select="mpegaudiodsp"
1991 mpegaudiodsp_select="dct"
1992 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1993 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
1994
1995 # decoders / encoders
1996 aac_decoder_select="mdct sinewin"
1997 aac_encoder_select="audio_frame_queue mdct sinewin"
1998 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1999 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
2000 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
2001 ac3_encoder_select="mdct ac3dsp dsputil"
2002 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
2003 aic_decoder_select="dsputil golomb"
2004 alac_encoder_select="lpc"
2005 als_decoder_select="dsputil"
2006 amrnb_decoder_select="lsp"
2007 amrwb_decoder_select="lsp"
2008 amv_decoder_select="sp5x_decoder exif"
2009 amv_encoder_select="aandcttables"
2010 ape_decoder_select="dsputil"
2011 asv1_decoder_select="dsputil"
2012 asv1_encoder_select="dsputil"
2013 asv2_decoder_select="dsputil"
2014 asv2_encoder_select="dsputil"
2015 atrac1_decoder_select="mdct sinewin"
2016 atrac3_decoder_select="mdct"
2017 atrac3p_decoder_select="mdct sinewin"
2018 avrn_decoder_select="exif"
2019 bink_decoder_select="dsputil hpeldsp"
2020 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2021 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2022 cavs_decoder_select="dsputil golomb h264chroma qpeldsp videodsp"
2023 cllc_decoder_select="dsputil"
2024 comfortnoise_encoder_select="lpc"
2025 cook_decoder_select="dsputil mdct sinewin"
2026 cscd_decoder_select="lzo"
2027 cscd_decoder_suggest="zlib"
2028 dca_decoder_select="mdct"
2029 dirac_decoder_select="dsputil dwt golomb videodsp"
2030 dnxhd_decoder_select="dsputil"
2031 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2032 dvvideo_decoder_select="dsputil"
2033 dvvideo_encoder_select="dsputil"
2034 dxa_decoder_select="zlib"
2035 eac3_decoder_select="ac3_decoder"
2036 eac3_encoder_select="ac3_encoder"
2037 eamad_decoder_select="aandcttables dsputil mpegvideo"
2038 eatgq_decoder_select="aandcttables"
2039 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2040 exr_decoder_select="zlib"
2041 ffv1_decoder_select="golomb rangecoder"
2042 ffv1_encoder_select="rangecoder"
2043 ffvhuff_decoder_select="huffyuv_decoder"
2044 ffvhuff_encoder_select="huffyuv_encoder"
2045 fic_decoder_select="golomb"
2046 flac_decoder_select="golomb"
2047 flac_encoder_select="dsputil golomb lpc"
2048 flashsv_decoder_select="zlib"
2049 flashsv_encoder_select="zlib"
2050 flashsv2_encoder_select="zlib"
2051 flashsv2_decoder_select="zlib"
2052 flv_decoder_select="h263_decoder"
2053 flv_encoder_select="h263_encoder"
2054 fourxm_decoder_select="dsputil"
2055 fraps_decoder_select="dsputil huffman"
2056 g2m_decoder_select="dsputil zlib"
2057 g729_decoder_select="dsputil"
2058 h261_decoder_select="error_resilience mpegvideo"
2059 h261_encoder_select="aandcttables mpegvideoenc"
2060 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo qpeldsp"
2061 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2062 h263i_decoder_select="h263_decoder"
2063 h263p_encoder_select="h263_encoder"
2064 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2065 h264_decoder_suggest="error_resilience"
2066 hevc_decoder_select="cabac dsputil golomb videodsp"
2067 huffyuv_decoder_select="dsputil huffyuvdsp llviddsp"
2068 huffyuv_encoder_select="dsputil huffman huffyuvencdsp llviddsp"
2069 iac_decoder_select="imc_decoder"
2070 imc_decoder_select="dsputil fft mdct sinewin"
2071 indeo3_decoder_select="hpeldsp"
2072 interplay_video_decoder_select="hpeldsp"
2073 jpegls_decoder_select="golomb mjpeg_decoder"
2074 jpegls_encoder_select="golomb"
2075 jv_decoder_select="dsputil"
2076 lagarith_decoder_select="huffyuvdsp"
2077 ljpeg_encoder_select="aandcttables mpegvideoenc"
2078 loco_decoder_select="golomb"
2079 mdec_decoder_select="dsputil error_resilience mpegvideo"
2080 metasound_decoder_select="lsp mdct sinewin"
2081 mimic_decoder_select="dsputil hpeldsp"
2082 mjpeg_decoder_select="dsputil hpeldsp exif"
2083 mjpeg_encoder_select="aandcttables mpegvideoenc"
2084 mjpegb_decoder_select="mjpeg_decoder"
2085 mlp_decoder_select="mlp_parser"
2086 motionpixels_decoder_select="dsputil"
2087 mp1_decoder_select="mpegaudio"
2088 mp1float_decoder_select="mpegaudio"
2089 mp2_decoder_select="mpegaudio"
2090 mp2float_decoder_select="mpegaudio"
2091 mp3_decoder_select="mpegaudio"
2092 mp3adu_decoder_select="mpegaudio"
2093 mp3adufloat_decoder_select="mpegaudio"
2094 mp3float_decoder_select="mpegaudio"
2095 mp3on4_decoder_select="mpegaudio"
2096 mp3on4float_decoder_select="mpegaudio"
2097 mpc7_decoder_select="dsputil mpegaudiodsp"
2098 mpc8_decoder_select="mpegaudiodsp"
2099 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2100 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2101 mpeg1video_decoder_select="error_resilience mpegvideo"
2102 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2103 mpeg2video_decoder_select="error_resilience mpegvideo"
2104 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2105 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2106 mpeg4_encoder_select="h263_encoder"
2107 msmpeg4v1_decoder_select="h263_decoder"
2108 msmpeg4v2_decoder_select="h263_decoder"
2109 msmpeg4v2_encoder_select="h263_encoder"
2110 msmpeg4v3_decoder_select="h263_decoder"
2111 msmpeg4v3_encoder_select="h263_encoder"
2112 mss2_decoder_select="error_resilience qpeldsp vc1_decoder"
2113 mxpeg_decoder_select="mjpeg_decoder"
2114 nellymoser_decoder_select="mdct sinewin"
2115 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2116 nuv_decoder_select="dsputil lzo"
2117 on2avc_decoder_select="mdct"
2118 opus_decoder_deps="swresample"
2119 png_decoder_select="zlib"
2120 png_encoder_select="huffyuvencdsp zlib"
2121 prores_decoder_select="dsputil"
2122 prores_encoder_select="dsputil"
2123 qcelp_decoder_select="lsp"
2124 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2125 ra_144_encoder_select="audio_frame_queue lpc"
2126 ralf_decoder_select="golomb"
2127 rawvideo_decoder_select="dsputil"
2128 rtjpeg_decoder_select="dsputil"
2129 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2130 rv10_encoder_select="h263_encoder"
2131 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2132 rv20_encoder_select="h263_encoder"
2133 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2134 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2135 shorten_decoder_select="golomb"
2136 sipr_decoder_select="lsp"
2137 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2138 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2139 sonic_decoder_select="golomb rangecoder"
2140 sonic_encoder_select="golomb rangecoder"
2141 sonic_ls_encoder_select="golomb rangecoder"
2142 sp5x_decoder_select="mjpeg_decoder"
2143 svq1_decoder_select="hpeldsp"
2144 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2145 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2146 svq3_decoder_suggest="zlib"
2147 tak_decoder_select="dsputil"
2148 theora_decoder_select="vp3_decoder"
2149 thp_decoder_select="mjpeg_decoder"
2150 tiff_decoder_suggest="zlib"
2151 tiff_encoder_suggest="zlib"
2152 truehd_decoder_select="mlp_parser"
2153 truemotion2_decoder_select="dsputil"
2154 truespeech_decoder_select="dsputil"
2155 tscc_decoder_select="zlib"
2156 twinvq_decoder_select="mdct lsp sinewin"
2157 utvideo_decoder_select="dsputil"
2158 utvideo_encoder_select="dsputil huffman huffyuvencdsp"
2159 vble_decoder_select="huffyuvdsp"
2160 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8 qpeldsp"
2161 vc1image_decoder_select="vc1_decoder"
2162 vorbis_decoder_select="mdct"
2163 vorbis_encoder_select="mdct"
2164 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2165 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2166 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2167 vp6a_decoder_select="vp6_decoder"
2168 vp6f_decoder_select="vp6_decoder"
2169 vp7_decoder_select="h264pred videodsp"
2170 vp8_decoder_select="h264pred videodsp"
2171 vp9_decoder_select="videodsp vp9_parser"
2172 webp_decoder_select="vp8_decoder"
2173 wmapro_decoder_select="mdct sinewin"
2174 wmav1_decoder_select="mdct sinewin"
2175 wmav1_encoder_select="mdct sinewin"
2176 wmav2_decoder_select="mdct sinewin"
2177 wmav2_encoder_select="mdct sinewin"
2178 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2179 wmv1_decoder_select="h263_decoder"
2180 wmv1_encoder_select="h263_encoder"
2181 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2182 wmv2_encoder_select="h263_encoder"
2183 wmv3_decoder_select="vc1_decoder"
2184 wmv3image_decoder_select="wmv3_decoder"
2185 zerocodec_decoder_select="zlib"
2186 zlib_decoder_select="zlib"
2187 zlib_encoder_select="zlib"
2188 zmbv_decoder_select="zlib"
2189 zmbv_encoder_select="zlib"
2190
2191 # hardware accelerators
2192 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2193 dxva2_deps="dxva2api_h"
2194 vaapi_deps="va_va_h"
2195 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2196 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2197 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2198 xvmc_deps="X11_extensions_XvMClib_h"
2199
2200 h263_vaapi_hwaccel_deps="vaapi"
2201 h263_vaapi_hwaccel_select="h263_decoder"
2202 h263_vdpau_hwaccel_deps="vdpau"
2203 h263_vdpau_hwaccel_select="h263_decoder"
2204 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2205 h264_dxva2_hwaccel_deps="dxva2"
2206 h264_dxva2_hwaccel_select="h264_decoder"
2207 h264_vaapi_hwaccel_deps="vaapi"
2208 h264_vaapi_hwaccel_select="h264_decoder"
2209 h264_vda_decoder_deps="vda"
2210 h264_vda_decoder_select="h264_decoder"
2211 h264_vda_hwaccel_deps="vda"
2212 h264_vda_hwaccel_select="h264_decoder"
2213 h264_vda_old_hwaccel_deps="vda"
2214 h264_vda_old_hwaccel_select="h264_decoder"
2215 h264_vdpau_decoder_deps="vdpau"
2216 h264_vdpau_decoder_select="h264_decoder"
2217 h264_vdpau_hwaccel_deps="vdpau"
2218 h264_vdpau_hwaccel_select="h264_decoder"
2219 mpeg_vdpau_decoder_deps="vdpau"
2220 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2221 mpeg_xvmc_hwaccel_deps="xvmc"
2222 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2223 mpeg1_vdpau_decoder_deps="vdpau"
2224 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2225 mpeg1_vdpau_hwaccel_deps="vdpau"
2226 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2227 mpeg1_xvmc_hwaccel_deps="xvmc"
2228 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2229 mpeg2_crystalhd_decoder_select="crystalhd"
2230 mpeg2_dxva2_hwaccel_deps="dxva2"
2231 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2232 mpeg2_vaapi_hwaccel_deps="vaapi"
2233 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2234 mpeg2_vdpau_hwaccel_deps="vdpau"
2235 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2236 mpeg2_xvmc_hwaccel_deps="xvmc"
2237 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2238 mpeg4_crystalhd_decoder_select="crystalhd"
2239 mpeg4_vaapi_hwaccel_deps="vaapi"
2240 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2241 mpeg4_vdpau_decoder_deps="vdpau"
2242 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2243 mpeg4_vdpau_hwaccel_deps="vdpau"
2244 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2245 msmpeg4_crystalhd_decoder_select="crystalhd"
2246 vc1_crystalhd_decoder_select="crystalhd"
2247 vc1_dxva2_hwaccel_deps="dxva2"
2248 vc1_dxva2_hwaccel_select="vc1_decoder"
2249 vc1_vaapi_hwaccel_deps="vaapi"
2250 vc1_vaapi_hwaccel_select="vc1_decoder"
2251 vc1_vdpau_decoder_deps="vdpau"
2252 vc1_vdpau_decoder_select="vc1_decoder"
2253 vc1_vdpau_hwaccel_deps="vdpau"
2254 vc1_vdpau_hwaccel_select="vc1_decoder"
2255 wmv3_crystalhd_decoder_select="crystalhd"
2256 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2257 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2258 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2259 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2260
2261 # parsers
2262 h264_parser_select="h264_decoder"
2263 hevc_parser_select="hevc_decoder"
2264 mpegvideo_parser_select="error_resilience mpegvideo"
2265 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2266 vc1_parser_select="mpegvideo"
2267
2268 # external libraries
2269 libaacplus_encoder_deps="libaacplus"
2270 libcelt_decoder_deps="libcelt"
2271 libfaac_encoder_deps="libfaac"
2272 libfaac_encoder_select="audio_frame_queue"
2273 libfdk_aac_decoder_deps="libfdk_aac"
2274 libfdk_aac_encoder_deps="libfdk_aac"
2275 libfdk_aac_encoder_select="audio_frame_queue"
2276 libgme_demuxer_deps="libgme"
2277 libgsm_decoder_deps="libgsm"
2278 libgsm_encoder_deps="libgsm"
2279 libgsm_ms_decoder_deps="libgsm"
2280 libgsm_ms_encoder_deps="libgsm"
2281 libilbc_decoder_deps="libilbc"
2282 libilbc_encoder_deps="libilbc"
2283 libmodplug_demuxer_deps="libmodplug"
2284 libmp3lame_encoder_deps="libmp3lame"
2285 libmp3lame_encoder_select="audio_frame_queue"
2286 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2287 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2288 libopencore_amrnb_encoder_select="audio_frame_queue"
2289 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2290 libopenjpeg_decoder_deps="libopenjpeg"
2291 libopenjpeg_encoder_deps="libopenjpeg"
2292 libopus_decoder_deps="libopus"
2293 libopus_encoder_deps="libopus"
2294 libopus_encoder_select="audio_frame_queue"
2295 libquvi_demuxer_deps="libquvi"
2296 libschroedinger_decoder_deps="libschroedinger"
2297 libschroedinger_encoder_deps="libschroedinger"
2298 libshine_encoder_deps="libshine"
2299 libshine_encoder_select="audio_frame_queue"
2300 libspeex_decoder_deps="libspeex"
2301 libspeex_encoder_deps="libspeex"
2302 libspeex_encoder_select="audio_frame_queue"
2303 libstagefright_h264_decoder_deps="libstagefright_h264"
2304 libtheora_encoder_deps="libtheora"
2305 libtwolame_encoder_deps="libtwolame"
2306 libvo_aacenc_encoder_deps="libvo_aacenc"
2307 libvo_aacenc_encoder_select="audio_frame_queue"
2308 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2309 libvorbis_decoder_deps="libvorbis"
2310 libvorbis_encoder_deps="libvorbis"
2311 libvorbis_encoder_select="audio_frame_queue"
2312 libvpx_vp8_decoder_deps="libvpx"
2313 libvpx_vp8_encoder_deps="libvpx"
2314 libvpx_vp9_decoder_deps="libvpx"
2315 libvpx_vp9_encoder_deps="libvpx"
2316 libwavpack_encoder_deps="libwavpack"
2317 libwebp_encoder_deps="libwebp"
2318 libx264_encoder_deps="libx264"
2319 libx264rgb_encoder_deps="libx264"
2320 libx265_encoder_deps="libx265"
2321 libxavs_encoder_deps="libxavs"
2322 libxvid_encoder_deps="libxvid"
2323 libutvideo_decoder_deps="libutvideo"
2324 libutvideo_encoder_deps="libutvideo"
2325 libzvbi_teletext_decoder_deps="libzvbi"
2326
2327 # demuxers / muxers
2328 ac3_demuxer_select="ac3_parser"
2329 asf_demuxer_select="riffdec"
2330 asf_muxer_select="riffenc"
2331 asf_stream_muxer_select="asf_muxer"
2332 avi_demuxer_select="riffdec exif"
2333 avi_muxer_select="riffenc"
2334 avisynth_demuxer_deps="avisynth"
2335 avisynth_demuxer_select="riffdec"
2336 caf_demuxer_select="riffdec"
2337 dirac_demuxer_select="dirac_parser"
2338 dts_demuxer_select="dca_parser"
2339 dtshd_demuxer_select="dca_parser"
2340 dxa_demuxer_select="riffdec"
2341 eac3_demuxer_select="ac3_parser"
2342 f4v_muxer_select="mov_muxer"
2343 flac_demuxer_select="flac_parser"
2344 hds_muxer_select="flv_muxer"
2345 hls_muxer_select="mpegts_muxer"
2346 image2_alias_pix_demuxer_select="image2_demuxer"
2347 image2_brender_pix_demuxer_select="image2_demuxer"
2348 ipod_muxer_select="mov_muxer"
2349 ismv_muxer_select="mov_muxer"
2350 libnut_demuxer_deps="libnut"
2351 libnut_muxer_deps="libnut"
2352 matroska_audio_muxer_select="matroska_muxer"
2353 matroska_demuxer_select="riffdec"
2354 matroska_demuxer_suggest="bzlib lzo zlib"
2355 matroska_muxer_select="riffenc"
2356 mmf_muxer_select="riffenc"
2357 mov_demuxer_select="riffdec"
2358 mov_demuxer_suggest="zlib"
2359 mov_muxer_select="riffenc rtpenc_chain"
2360 mp3_demuxer_select="mpegaudio_parser"
2361 mp4_muxer_select="mov_muxer"
2362 mpegts_muxer_select="adts_muxer latm_muxer"
2363 mpegtsraw_demuxer_select="mpegts_demuxer"
2364 mxf_d10_muxer_select="mxf_muxer"
2365 nut_muxer_select="riffenc"
2366 nuv_demuxer_select="riffdec"
2367 ogg_demuxer_select="golomb"
2368 psp_muxer_select="mov_muxer"
2369 rtp_demuxer_select="sdp_demuxer"
2370 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2371 rtsp_demuxer_select="http_protocol rtpdec"
2372 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2373 sap_demuxer_select="sdp_demuxer"
2374 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2375 sdp_demuxer_select="rtpdec"
2376 smoothstreaming_muxer_select="ismv_muxer"
2377 spdif_muxer_select="aac_parser"
2378 tak_demuxer_select="tak_parser"
2379 tg2_muxer_select="mov_muxer"
2380 tgp_muxer_select="mov_muxer"
2381 vobsub_demuxer_select="mpegps_demuxer"
2382 w64_demuxer_select="wav_demuxer"
2383 w64_muxer_select="wav_muxer"
2384 wav_demuxer_select="riffdec"
2385 wav_muxer_select="riffenc"
2386 webm_muxer_select="riffenc"
2387 wtv_demuxer_select="riffdec"
2388 wtv_muxer_select="riffenc"
2389 xmv_demuxer_select="riffdec"
2390 xwma_demuxer_select="riffdec"
2391
2392 # indevs / outdevs
2393 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2394 alsa_outdev_deps="alsa_asoundlib_h"
2395 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2396 avfoundation_indev_select="avfoundation"
2397 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2398 caca_outdev_deps="libcaca"
2399 decklink_outdev_deps="decklink pthreads"
2400 decklink_outdev_extralibs="-lstdc++"
2401 dshow_indev_deps="IBaseFilter"
2402 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2403 dv1394_indev_deps="dv1394"
2404 dv1394_indev_select="dv_demuxer"
2405 fbdev_indev_deps="linux_fb_h"
2406 fbdev_outdev_deps="linux_fb_h"
2407 gdigrab_indev_deps="CreateDIBSection"
2408 gdigrab_indev_extralibs="-lgdi32"
2409 gdigrab_indev_select="bmp_decoder"
2410 iec61883_indev_deps="libiec61883"
2411 jack_indev_deps="jack_jack_h sem_timedwait"
2412 lavfi_indev_deps="avfilter"
2413 libcdio_indev_deps="libcdio"
2414 libdc1394_indev_deps="libdc1394"
2415 libv4l2_indev_deps="libv4l2"
2416 openal_indev_deps="openal"
2417 opengl_outdev_deps="opengl"
2418 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2419 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2420 pulse_indev_deps="libpulse"
2421 pulse_outdev_deps="libpulse"
2422 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2423 qtkit_indev_select="qtkit"
2424 sdl_outdev_deps="sdl"
2425 sndio_indev_deps="sndio_h"
2426 sndio_outdev_deps="sndio_h"
2427 v4l_indev_deps="linux_videodev_h"
2428 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2429 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2430 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2431 vfwcap_indev_extralibs="-lavicap32"
2432 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2433 xv_outdev_extralibs="-lXv -lX11 -lXext"
2434 x11grab_indev_deps="x11grab"
2435
2436 # protocols
2437 bluray_protocol_deps="libbluray"
2438 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2439 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2440 ffrtmpcrypt_protocol_select="tcp_protocol"
2441 ffrtmphttp_protocol_deps="!librtmp_protocol"
2442 ffrtmphttp_protocol_select="http_protocol"
2443 ftp_protocol_select="tcp_protocol"
2444 gopher_protocol_select="network"
2445 http_protocol_select="tcp_protocol"
2446 httpproxy_protocol_select="tcp_protocol"
2447 https_protocol_select="tls_protocol"
2448 librtmp_protocol_deps="librtmp"
2449 librtmpe_protocol_deps="librtmp"
2450 librtmps_protocol_deps="librtmp"
2451 librtmpt_protocol_deps="librtmp"
2452 librtmpte_protocol_deps="librtmp"
2453 libssh_protocol_deps="libssh"
2454 mmsh_protocol_select="http_protocol"
2455 mmst_protocol_select="network"
2456 rtmp_protocol_deps="!librtmp_protocol"
2457 rtmp_protocol_select="tcp_protocol"
2458 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2459 rtmps_protocol_deps="!librtmp_protocol"
2460 rtmps_protocol_select="tls_protocol"
2461 rtmpt_protocol_select="ffrtmphttp_protocol"
2462 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2463 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2464 rtp_protocol_select="udp_protocol"
2465 sctp_protocol_deps="struct_sctp_event_subscribe"
2466 sctp_protocol_select="network"
2467 srtp_protocol_select="rtp_protocol"
2468 tcp_protocol_select="network"
2469 tls_protocol_deps_any="openssl gnutls"
2470 tls_protocol_select="tcp_protocol"
2471 udp_protocol_select="network"
2472 unix_protocol_deps="sys_un_h"
2473 unix_protocol_select="network"
2474
2475 # filters
2476 aconvert_filter_deps="swresample"
2477 amovie_filter_deps="avcodec avformat"
2478 aresample_filter_deps="swresample"
2479 ass_filter_deps="libass"
2480 asyncts_filter_deps="avresample"
2481 atempo_filter_deps="avcodec"
2482 atempo_filter_select="rdft"
2483 azmq_filter_deps="libzmq"
2484 blackframe_filter_deps="gpl"
2485 boxblur_filter_deps="gpl"
2486 bs2b_filter_deps="libbs2b"
2487 colormatrix_filter_deps="gpl"
2488 cropdetect_filter_deps="gpl"
2489 dctdnoiz_filter_deps="avcodec"
2490 dctdnoiz_filter_select="dct"
2491 delogo_filter_deps="gpl"
2492 deshake_filter_deps="avcodec"
2493 deshake_filter_select="dsputil"
2494 drawtext_filter_deps="libfreetype"
2495 ebur128_filter_deps="gpl"
2496 flite_filter_deps="libflite"
2497 frei0r_filter_deps="frei0r dlopen"
2498 frei0r_filter_extralibs='$ldl'
2499 frei0r_src_filter_deps="frei0r dlopen"
2500 frei0r_src_filter_extralibs='$ldl'
2501 geq_filter_deps="gpl"
2502 histeq_filter_deps="gpl"
2503 hqdn3d_filter_deps="gpl"
2504 interlace_filter_deps="gpl"
2505 kerndeint_filter_deps="gpl"
2506 ladspa_filter_deps="ladspa dlopen"
2507 ladspa_filter_extralibs='$ldl'
2508 mcdeint_filter_deps="avcodec gpl"
2509 movie_filter_deps="avcodec avformat"
2510 mp_filter_deps="gpl avcodec swscale inline_asm"
2511 mpdecimate_filter_deps="gpl avcodec"
2512 mptestsrc_filter_deps="gpl"
2513 negate_filter_deps="lut_filter"
2514 perspective_filter_deps="gpl"
2515 ocv_filter_deps="libopencv"
2516 owdenoise_filter_deps="gpl"
2517 pan_filter_deps="swresample"
2518 phase_filter_deps="gpl"
2519 pp_filter_deps="gpl postproc"
2520 pullup_filter_deps="gpl"
2521 removelogo_filter_deps="avcodec avformat swscale"
2522 resample_filter_deps="avresample"
2523 sab_filter_deps="gpl swscale"
2524 scale_filter_deps="swscale"
2525 smartblur_filter_deps="gpl swscale"
2526 showspectrum_filter_deps="avcodec"
2527 showspectrum_filter_select="rdft"
2528 spp_filter_deps="gpl avcodec"
2529 spp_filter_select="fft"
2530 stereo3d_filter_deps="gpl"
2531 subtitles_filter_deps="avformat avcodec libass"
2532 super2xsai_filter_deps="gpl"
2533 tinterlace_filter_deps="gpl"
2534 vidstabdetect_filter_deps="libvidstab"
2535 vidstabtransform_filter_deps="libvidstab"
2536 pixfmts_super2xsai_test_deps="super2xsai_filter"
2537 tinterlace_merge_test_deps="tinterlace_filter"
2538 tinterlace_pad_test_deps="tinterlace_filter"
2539 zmq_filter_deps="libzmq"
2540
2541 # examples
2542 avio_reading="avformat avcodec avutil"
2543 avcodec_example_deps="avcodec avutil"
2544 demuxing_decoding_example_deps="avcodec avformat avutil"
2545 filter_audio_example_deps="avfilter avutil"
2546 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2547 filtering_video_example_deps="avfilter avcodec avformat avutil"
2548 metadata_example_deps="avformat avutil"
2549 muxing_example_deps="avcodec avformat avutil swscale"
2550 remuxing_example_deps="avcodec avformat avutil"
2551 resampling_audio_example_deps="avutil swresample"
2552 scaling_video_example_deps="avutil swscale"
2553 transcode_aac_example_deps="avcodec avformat swresample"
2554 transcoding_example_deps="avfilter avcodec avformat avutil"
2555
2556 # libraries, in linking order
2557 avcodec_deps="avutil"
2558 avdevice_deps="avformat avcodec avutil"
2559 avfilter_deps="avutil"
2560 avformat_deps="avcodec avutil"
2561 avresample_deps="avutil"
2562 postproc_deps="avutil gpl"
2563 swresample_deps="avutil"
2564 swscale_deps="avutil"
2565
2566 # programs
2567 ffmpeg_deps="avcodec avfilter avformat swresample"
2568 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2569                null_filter
2570                setpts_filter trim_filter"
2571 ffplay_deps="avcodec avformat swscale swresample sdl"
2572 ffplay_libs='$sdl_libs'
2573 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2574 ffprobe_deps="avcodec avformat"
2575 ffserver_deps="avformat fork sarestart"
2576 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2577
2578 # documentation
2579 podpages_deps="perl"
2580 manpages_deps="perl pod2man"
2581 htmlpages_deps="perl texi2html"
2582 txtpages_deps="perl makeinfo"
2583 doc_deps_any="manpages htmlpages podpages txtpages"
2584
2585 # default parameters
2586
2587 logfile="config.log"
2588
2589 # installation paths
2590 prefix_default="/usr/local"
2591 bindir_default='${prefix}/bin'
2592 datadir_default='${prefix}/share/ffmpeg'
2593 docdir_default='${prefix}/share/doc/ffmpeg'
2594 incdir_default='${prefix}/include'
2595 libdir_default='${prefix}/lib'
2596 mandir_default='${prefix}/share/man'
2597 shlibdir_default="$libdir_default"
2598
2599 # toolchain
2600 ar_default="ar"
2601 cc_default="gcc"
2602 cxx_default="g++"
2603 host_cc_default="gcc"
2604 cp_f="cp -f"
2605 install="install"
2606 ln_s="ln -s -f"
2607 nm_default="nm -g"
2608 objformat="elf"
2609 pkg_config_default=pkg-config
2610 ranlib_default="ranlib"
2611 strip_default="strip"
2612 yasmexe_default="yasm"
2613 windres_default="windres"
2614
2615 nogas=":"
2616
2617 # OS
2618 target_os_default=$(tolower $(uname -s))
2619 host_os=$target_os_default
2620
2621 # machine
2622 if test "$target_os_default" = aix; then
2623     arch_default=$(uname -p)
2624 else
2625     arch_default=$(uname -m)
2626 fi
2627 cpu="generic"
2628
2629 # configurable options
2630 enable $PROGRAM_LIST
2631 enable $DOCUMENT_LIST
2632 enable $EXAMPLE_LIST
2633 enable $(filter_out avresample $LIBRARY_LIST)
2634 enable stripping
2635
2636 enable asm
2637 enable debug
2638 enable doc
2639 enable optimizations
2640 enable runtime_cpudetect
2641 enable safe_bitstream_reader
2642 enable static
2643 enable swscale_alpha
2644
2645 # Enable hwaccels by default.
2646 enable dxva2 vaapi vda vdpau xvmc
2647 enable xlib
2648
2649 # build settings
2650 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2651 LIBPREF="lib"
2652 LIBSUF=".a"
2653 FULLNAME='$(NAME)$(BUILDSUF)'
2654 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2655 SLIBPREF="lib"
2656 SLIBSUF=".so"
2657 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2658 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2659 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2660 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2661 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2662 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2663
2664 asflags_filter=echo
2665 cflags_filter=echo
2666 ldflags_filter=echo
2667
2668 AS_C='-c'
2669 AS_O='-o $@'
2670 CC_C='-c'
2671 CC_E='-E -o $@'
2672 CC_O='-o $@'
2673 CXX_C='-c'
2674 CXX_O='-o $@'
2675 LD_O='-o $@'
2676 LD_LIB='-l%'
2677 LD_PATH='-L'
2678 HOSTCC_C='-c'
2679 HOSTCC_E='-E -o $@'
2680 HOSTCC_O='-o $@'
2681 HOSTLD_O='-o $@'
2682
2683 host_libs='-lm'
2684 host_cflags_filter=echo
2685 host_ldflags_filter=echo
2686
2687 target_path='$(CURDIR)'
2688
2689 # since the object filename is not given with the -MM flag, the compiler
2690 # is only able to print the basename, and we must add the path ourselves
2691 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2692 DEPFLAGS='-MM'
2693
2694 # find source path
2695 if test -f configure; then
2696     source_path=.
2697 else
2698     source_path=$(cd $(dirname "$0"); pwd)
2699     echo "$source_path" | grep -q '[[:blank:]]' &&
2700         die "Out of tree builds are impossible with whitespace in source path."
2701     test -e "$source_path/config.h" &&
2702         die "Out of tree builds are impossible with config.h in source dir."
2703 fi
2704
2705 for v in "$@"; do
2706     r=${v#*=}
2707     l=${v%"$r"}
2708     r=$(sh_quote "$r")
2709     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2710 done
2711
2712 find_things(){
2713     thing=$1
2714     pattern=$2
2715     file=$source_path/$3
2716     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2717 }
2718
2719 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2720 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2721 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2722 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2723 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2724 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2725 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2726 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2727 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2728 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2729 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2730
2731 ALL_COMPONENTS="
2732     $BSF_LIST
2733     $DECODER_LIST
2734     $DEMUXER_LIST
2735     $ENCODER_LIST
2736     $FILTER_LIST
2737     $HWACCEL_LIST
2738     $INDEV_LIST
2739     $MUXER_LIST
2740     $OUTDEV_LIST
2741     $PARSER_LIST
2742     $PROTOCOL_LIST
2743 "
2744
2745 for n in $COMPONENT_LIST; do
2746     v=$(toupper ${n%s})_LIST
2747     eval enable \$$v
2748     eval ${n}_if_any="\$$v"
2749 done
2750
2751 enable $ARCH_EXT_LIST
2752
2753 die_unknown(){
2754     echo "Unknown option \"$1\"."
2755     echo "See $0 --help for available options."
2756     exit 1
2757 }
2758
2759 print_3_columns() {
2760     cat | tr ' ' '\n' | sort | pr -r -3 -t
2761 }
2762
2763 show_list() {
2764     suffix=_$1
2765     shift
2766     echo $* | sed s/$suffix//g | print_3_columns
2767     exit 0
2768 }
2769
2770 rand_list(){
2771     IFS=', '
2772     set -- $*
2773     unset IFS
2774     for thing; do
2775         comp=${thing%:*}
2776         prob=${thing#$comp}
2777         prob=${prob#:}
2778         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2779         echo "prob ${prob:-0.5}"
2780         printf '%s\n' $comp
2781     done
2782 }
2783
2784 do_random(){
2785     action=$1
2786     shift
2787     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2788     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2789 }
2790
2791 for opt do
2792     optval="${opt#*=}"
2793     case "$opt" in
2794         --extra-ldflags=*)
2795             add_ldflags $optval
2796         ;;
2797         --extra-libs=*)
2798             add_extralibs $optval
2799         ;;
2800         --disable-devices)
2801             disable $INDEV_LIST $OUTDEV_LIST
2802         ;;
2803         --enable-debug=*)
2804             debuglevel="$optval"
2805         ;;
2806         --disable-programs)
2807             disable $PROGRAM_LIST
2808         ;;
2809         --disable-everything)
2810             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2811         ;;
2812         --disable-all)
2813             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2814             disable $LIBRARY_LIST $PROGRAM_LIST doc
2815         ;;
2816         --enable-random|--disable-random)
2817             action=${opt%%-random}
2818             do_random ${action#--} $COMPONENT_LIST
2819         ;;
2820         --enable-random=*|--disable-random=*)
2821             action=${opt%%-random=*}
2822             do_random ${action#--} $optval
2823         ;;
2824         --enable-*=*|--disable-*=*)
2825             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2826             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2827             eval list=\$$(toupper $thing)_LIST
2828             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2829             list=$(filter "$name" $list)
2830             [ "$list" = "" ] && warn "Option $opt did not match anything"
2831             $action $list
2832         ;;
2833         --enable-?*|--disable-?*)
2834             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2835             if is_in $option $COMPONENT_LIST; then
2836                 test $action = disable && action=unset
2837                 eval $action \$$(toupper ${option%s})_LIST
2838             elif is_in $option $CMDLINE_SELECT; then
2839                 $action $option
2840             else
2841                 die_unknown $opt
2842             fi
2843         ;;
2844         --list-*)
2845             NAME="${opt#--list-}"
2846             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2847             NAME=${NAME%s}
2848             eval show_list $NAME \$$(toupper $NAME)_LIST
2849         ;;
2850         --help|-h) show_help
2851         ;;
2852         --fatal-warnings) enable fatal_warnings
2853         ;;
2854         *)
2855             optname="${opt%%=*}"
2856             optname="${optname#--}"
2857             optname=$(echo "$optname" | sed 's/-/_/g')
2858             if is_in $optname $CMDLINE_SET; then
2859                 eval $optname='$optval'
2860             elif is_in $optname $CMDLINE_APPEND; then
2861                 append $optname "$optval"
2862             else
2863                 die_unknown $opt
2864             fi
2865         ;;
2866     esac
2867 done
2868
2869 disabled logging && logfile=/dev/null
2870
2871 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2872 set >> $logfile
2873
2874 test -n "$cross_prefix" && enable cross_compile
2875
2876 if enabled cross_compile; then
2877     test -n "$arch" && test -n "$target_os" ||
2878         die "Must specify target arch and OS when cross-compiling"
2879 fi
2880
2881 ar_default="${cross_prefix}${ar_default}"
2882 cc_default="${cross_prefix}${cc_default}"
2883 cxx_default="${cross_prefix}${cxx_default}"
2884 nm_default="${cross_prefix}${nm_default}"
2885 pkg_config_default="${cross_prefix}${pkg_config_default}"
2886 ranlib_default="${cross_prefix}${ranlib_default}"
2887 strip_default="${cross_prefix}${strip_default}"
2888 windres_default="${cross_prefix}${windres_default}"
2889
2890 sysinclude_default="${sysroot}/usr/include"
2891
2892 test -n "$valgrind" && toolchain="valgrind-memcheck"
2893
2894 case "$toolchain" in
2895     clang-asan)
2896         cc_default="clang"
2897         add_cflags  -fsanitize=address
2898         add_ldflags -fsanitize=address
2899     ;;
2900     clang-tsan)
2901         cc_default="clang"
2902         add_cflags  -fsanitize=thread -pie
2903         add_ldflags -fsanitize=thread -pie
2904     ;;
2905     clang-usan)
2906         cc_default="clang"
2907         add_cflags  -fsanitize=undefined
2908         add_ldflags -fsanitize=undefined
2909     ;;
2910     gcc-asan)
2911         cc_default="gcc"
2912         add_cflags  -fsanitize=address
2913         add_ldflags -fsanitize=address
2914     ;;
2915     gcc-tsan)
2916         cc_default="gcc"
2917         add_cflags  -fsanitize=thread -pie -fPIC
2918         add_ldflags -fsanitize=thread -pie -fPIC
2919     ;;
2920     gcc-usan)
2921         cc_default="gcc"
2922         add_cflags  -fsanitize=undefined
2923         add_ldflags -fsanitize=undefined
2924     ;;
2925     valgrind-massif)
2926         target_exec_default=${valgrind:-"valgrind"}
2927         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"
2928     ;;
2929     valgrind-memcheck)
2930         target_exec_default=${valgrind:-"valgrind"}
2931         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2932     ;;
2933     msvc)
2934         # Check whether the current MSVC version needs the C99 converter.
2935         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2936         # support enough of C99 to build ffmpeg. Default to the new
2937         # behaviour if the regexp was unable to match anything, since this
2938         # successfully parses the version number of existing supported
2939         # versions that require the converter (MSVC 2010 and 2012).
2940         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2941         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2942             cc_default="cl"
2943         else
2944             cc_default="c99wrap cl"
2945         fi
2946         ld_default="link"
2947         nm_default="dumpbin -symbols"
2948         ar_default="lib"
2949         target_os_default="win32"
2950         # Use a relative path for TMPDIR. This makes sure all the
2951         # ffconf temp files are written with a relative path, avoiding
2952         # issues with msys/win32 path conversion for MSVC parameters
2953         # such as -Fo<file> or -out:<file>.
2954         TMPDIR=.
2955     ;;
2956     icl)
2957         cc_default="icl"
2958         ld_default="xilink"
2959         nm_default="dumpbin -symbols"
2960         ar_default="xilib"
2961         target_os_default="win32"
2962         TMPDIR=.
2963     ;;
2964     gcov)
2965         add_cflags  -fprofile-arcs -ftest-coverage
2966         add_ldflags -fprofile-arcs -ftest-coverage
2967     ;;
2968     hardened)
2969         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2970         add_ldflags -Wl,-z,relro -Wl,-z,now
2971     ;;
2972     ?*)
2973         die "Unknown toolchain $toolchain"
2974     ;;
2975 esac
2976
2977 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2978 enabled cross_compile || host_cc_default=$cc
2979 set_default host_cc
2980
2981 if ! $pkg_config --version >/dev/null 2>&1; then
2982     warn "$pkg_config not found, library detection may fail."
2983     pkg_config=false
2984 fi
2985
2986 exesuf() {
2987     case $1 in
2988         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2989     esac
2990 }
2991
2992 EXESUF=$(exesuf $target_os)
2993 HOSTEXESUF=$(exesuf $host_os)
2994
2995 # set temporary file name
2996 : ${TMPDIR:=$TEMPDIR}
2997 : ${TMPDIR:=$TMP}
2998 : ${TMPDIR:=/tmp}
2999
3000 if [ -n "$tempprefix" ] ; then
3001     mktemp(){
3002         echo $tempprefix.${HOSTNAME}.${UID}
3003     }
3004 elif ! check_cmd mktemp -u XXXXXX; then
3005     # simple replacement for missing mktemp
3006     # NOT SAFE FOR GENERAL USE
3007     mktemp(){
3008         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3009     }
3010 fi
3011
3012 tmpfile(){
3013     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3014         (set -C; exec > $tmp) 2>/dev/null ||
3015         die "Unable to create temporary file in $TMPDIR."
3016     append TMPFILES $tmp
3017     eval $1=$tmp
3018 }
3019
3020 trap 'rm -f -- $TMPFILES' EXIT
3021
3022 tmpfile TMPASM .asm
3023 tmpfile TMPC   .c
3024 tmpfile TMPCPP .cpp
3025 tmpfile TMPE   $EXESUF
3026 tmpfile TMPH   .h
3027 tmpfile TMPM   .m
3028 tmpfile TMPO   .o
3029 tmpfile TMPS   .S
3030 tmpfile TMPSH  .sh
3031 tmpfile TMPV   .ver
3032
3033 unset -f mktemp
3034
3035 chmod +x $TMPE
3036
3037 # make sure we can execute files in $TMPDIR
3038 cat > $TMPSH 2>> $logfile <<EOF
3039 #! /bin/sh
3040 EOF
3041 chmod +x $TMPSH >> $logfile 2>&1
3042 if ! $TMPSH >> $logfile 2>&1; then
3043     cat <<EOF
3044 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3045 variable to another directory and make sure that it is not mounted noexec.
3046 EOF
3047     die "Sanity test failed."
3048 fi
3049
3050 ccc_flags(){
3051     for flag; do
3052         case $flag in
3053             -std=c99)           echo -c99                       ;;
3054             -mcpu=*)            echo -arch ${flag#*=}           ;;
3055             -mieee)             echo -ieee                      ;;
3056             -O*|-fast)          echo $flag                      ;;
3057             -fno-math-errno)    echo -assume nomath_errno       ;;
3058             -g)                 echo -g3                        ;;
3059             -Wall)              echo -msg_enable level2         ;;
3060             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3061             -Wl,*)              echo $flag                      ;;
3062             -f*|-W*)                                            ;;
3063             *)                  echo $flag                      ;;
3064         esac
3065    done
3066 }
3067
3068 cparser_flags(){
3069     for flag; do
3070         case $flag in
3071             -Wno-switch)             echo -Wno-switch-enum ;;
3072             -Wno-format-zero-length) ;;
3073             -Wdisabled-optimization) ;;
3074             -Wno-pointer-sign)       echo -Wno-other ;;
3075             *)                       echo $flag ;;
3076         esac
3077     done
3078 }
3079
3080 msvc_common_flags(){
3081     for flag; do
3082         case $flag in
3083             # In addition to specifying certain flags under the compiler
3084             # specific filters, they must be specified here as well or else the
3085             # generic catch all at the bottom will print the original flag.
3086             -Wall)                ;;
3087             -std=c99)             ;;
3088             # Common flags
3089             -fomit-frame-pointer) ;;
3090             -g)                   echo -Z7 ;;
3091             -fno-math-errno)      ;;
3092             -fno-common)          ;;
3093             -fno-signed-zeros)    ;;
3094             -fPIC)                ;;
3095             -mthumb)              ;;
3096             -march=*)             ;;
3097             -lz)                  echo zlib.lib ;;
3098             -lavifil32)           echo vfw32.lib ;;
3099             -lavicap32)           echo vfw32.lib user32.lib ;;
3100             -l*)                  echo ${flag#-l}.lib ;;
3101             *)                    echo $flag ;;
3102         esac
3103     done
3104 }
3105
3106 msvc_flags(){
3107     msvc_common_flags "$@"
3108     for flag; do
3109         case $flag in
3110             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3111                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3112                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3113                                        -wd4554 \
3114                                        -wd4273 ;;
3115         esac
3116     done
3117 }
3118
3119 icl_flags(){
3120     msvc_common_flags "$@"
3121     for flag; do
3122         case $flag in
3123             # Despite what Intel's documentation says -Wall, which is supported
3124             # on Windows, does enable remarks so disable them here.
3125             -Wall)                echo $flag -Qdiag-disable:remark ;;
3126             -std=c99)             echo -Qstd=c99 ;;
3127         esac
3128     done
3129 }
3130
3131 icc_flags(){
3132     for flag; do
3133         case $flag in
3134             -flto)                echo -ipo ;;
3135             *)                    echo $flag ;;
3136         esac
3137     done
3138 }
3139
3140 pgi_flags(){
3141     for flag; do
3142         case $flag in
3143             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3144             -fomit-frame-pointer) echo -Mnoframe ;;
3145             -g)                   echo -gopt ;;
3146             *)                    echo $flag ;;
3147         esac
3148     done
3149 }
3150
3151 suncc_flags(){
3152     for flag; do
3153         case $flag in
3154             -march=*|-mcpu=*)
3155                 case "${flag#*=}" in
3156                     native)                   echo -xtarget=native       ;;
3157                     v9|niagara)               echo -xarch=sparc          ;;
3158                     ultrasparc)               echo -xarch=sparcvis       ;;
3159                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3160                     i586|pentium)             echo -xchip=pentium        ;;
3161                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3162                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3163                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3164                     pentium4*)          echo -xtarget=pentium4           ;;
3165                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3166                     *-sse3)             echo -xarch=sse3                 ;;
3167                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3168                     bonnell)                   echo -xarch=ssse3         ;;
3169                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3170                     westmere)                  echo -xtarget=westmere    ;;
3171                     silvermont)                echo -xarch=sse4_2        ;;
3172                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3173                     core-avx*|ivybridge|haswell|broadwell)
3174                                                echo -xarch=avx           ;;
3175                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3176                     btver1)                    echo -xarch=amdsse4a      ;;
3177                     btver2|bdver*)             echo -xarch=avx           ;;
3178                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3179                     k8|opteron|athlon64|athlon-fx)
3180                                                echo -xarch=sse2a         ;;
3181                     athlon*)                   echo -xarch=pentium_proa  ;;
3182                 esac
3183                 ;;
3184             -std=c99)             echo -xc99              ;;
3185             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3186             -fPIC)                echo -KPIC -xcode=pic32 ;;
3187             -W*,*)                echo $flag              ;;
3188             -f*-*|-W*|-mimpure-text)                      ;;
3189             -shared)              echo -G                 ;;
3190             *)                    echo $flag              ;;
3191         esac
3192     done
3193 }
3194
3195 tms470_flags(){
3196     for flag; do
3197         case $flag in
3198             -march=*|-mcpu=*)
3199                 case "${flag#*=}" in
3200                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3201                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3202                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3203                     armv6*|arm11*)          echo -mv=6   ;;
3204                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3205                                             echo -mv=5e  ;;
3206                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3207                 esac
3208                 ;;
3209             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3210             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3211             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3212             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3213             -msoft-float)   echo --float_support=vfplib       ;;
3214             -O[0-3]|-mf=*)  echo $flag                        ;;
3215             -g)             echo -g -mn                       ;;
3216             -pds=*)         echo $flag                        ;;
3217             -D*|-I*)        echo $flag                        ;;
3218             --gcc|--abi=*)  echo $flag                        ;;
3219             -me)            echo $flag                        ;;
3220         esac
3221     done
3222 }
3223
3224 probe_cc(){
3225     pfx=$1
3226     _cc=$2
3227
3228     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3229     unset _ld_o _ldflags _ld_lib _ld_path
3230     unset _depflags _DEPCMD _DEPFLAGS
3231     _flags_filter=echo
3232
3233     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3234         true # no-op to avoid reading stdin in following checks
3235     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3236         _type=llvm_gcc
3237         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3238         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3239         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3240         _cflags_speed='-O3'
3241         _cflags_size='-Os'
3242     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3243         _type=gcc
3244         gcc_version=$($_cc --version | head -n1)
3245         gcc_basever=$($_cc -dumpversion)
3246         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3247         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3248         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3249         if ! $_cc -dumpversion | grep -q '^2\.'; then
3250             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3251         fi
3252         _cflags_speed='-O3'
3253         _cflags_size='-Os'
3254     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3255         _type=icc
3256         _ident=$($_cc --version | head -n1)
3257         _depflags='-MMD'
3258         _cflags_speed='-O3'
3259         _cflags_size='-Os'
3260         _cflags_noopt='-O1'
3261         _flags_filter=icc_flags
3262     elif $_cc -v 2>&1 | grep -q xlc; then
3263         _type=xlc
3264         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3265         _cflags_speed='-O5'
3266         _cflags_size='-O5 -qcompact'
3267     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3268         _type=ccc
3269         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3270         _DEPFLAGS='-M'
3271         _cflags_speed='-fast'
3272         _cflags_size='-O1'
3273         _flags_filter=ccc_flags
3274     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3275         test -d "$sysroot" || die "No valid sysroot specified."
3276         _type=armcc
3277         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3278         armcc_conf="$PWD/armcc.conf"
3279         $_cc --arm_linux_configure                 \
3280              --arm_linux_config_file="$armcc_conf" \
3281              --configure_sysroot="$sysroot"        \
3282              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3283              die "Error creating armcc configuration file."
3284         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3285         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3286         as_default="${cross_prefix}gcc"
3287         _depflags='-MMD'
3288         _cflags_speed='-O3'
3289         _cflags_size='-Os'
3290     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3291         _type=tms470
3292         _ident=$($_cc -version | head -n1 | tr -s ' ')
3293         _flags='--gcc --abi=eabi -me'
3294         _cc_e='-ppl -fe=$@'
3295         _cc_o='-fe=$@'
3296         _depflags='-ppa -ppd=$(@:.o=.d)'
3297         _cflags_speed='-O3 -mf=5'
3298         _cflags_size='-O3 -mf=2'
3299         _flags_filter=tms470_flags
3300     elif $_cc -v 2>&1 | grep -q clang; then
3301         _type=clang
3302         _ident=$($_cc --version | head -n1)
3303         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3304         _cflags_speed='-O3'
3305         _cflags_size='-Os'
3306     elif $_cc -V 2>&1 | grep -q Sun; then
3307         _type=suncc
3308         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3309         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3310         _DEPFLAGS='-xM1 -xc99'
3311         _ldflags='-std=c99'
3312         _cflags_speed='-O5'
3313         _cflags_size='-O5 -xspace'
3314         _flags_filter=suncc_flags
3315     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3316         _type=pathscale
3317         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3318         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3319         _cflags_speed='-O2'
3320         _cflags_size='-Os'
3321         _flags_filter='filter_out -Wdisabled-optimization'
3322     elif $_cc -v 2>&1 | grep -q Open64; then
3323         _type=open64
3324         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3325         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3326         _cflags_speed='-O2'
3327         _cflags_size='-Os'
3328         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3329     elif $_cc -V 2>&1 | grep -q Portland; then
3330         _type=pgi
3331         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3332         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3333         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3334         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3335         _cflags_noopt="-O"
3336         _flags_filter=pgi_flags
3337     elif $_cc 2>&1 | grep -q Microsoft; then
3338         _type=msvc
3339         _ident=$($cc 2>&1 | head -n1)
3340         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3341         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3342         _cflags_speed="-O2"
3343         _cflags_size="-O1"
3344         if $_cc 2>&1 | grep -q Linker; then
3345             _ld_o='-out:$@'
3346         else
3347             _ld_o='-Fe$@'
3348         fi
3349         _cc_o='-Fo$@'
3350         _cc_e='-P -Fi$@'
3351         _flags_filter=msvc_flags
3352         _ld_lib='lib%.a'
3353         _ld_path='-libpath:'
3354         _flags='-nologo'
3355         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3356         if [ $pfx = hostcc ]; then
3357             append _cflags -Dsnprintf=_snprintf
3358         fi
3359         disable stripping
3360     elif $_cc 2>&1 | grep -q Intel; then
3361         _type=icl
3362         _ident=$($cc 2>&1 | head -n1)
3363         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3364         # Not only is O3 broken on 13.x+ but it is slower on all previous
3365         # versions (tested) as well.
3366         _cflags_speed="-O2"
3367         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3368         if $_cc 2>&1 | grep -q Linker; then
3369             _ld_o='-out:$@'
3370         else
3371             _ld_o='-Fe$@'
3372         fi
3373         _cc_o='-Fo$@'
3374         _cc_e='-P'
3375         _flags_filter=icl_flags
3376         _ld_lib='lib%.a'
3377         _ld_path='-libpath:'
3378         # -Qdiag-error to make icl error when seeing certain unknown arguments
3379         _flags='-nologo -Qdiag-error:4044,10157'
3380         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3381         # with MSVC which enables it by default.
3382         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3383         if [ $pfx = hostcc ]; then
3384             append _cflags -Dsnprintf=_snprintf
3385         fi
3386     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3387         _type=cparser
3388         _ident=$($_cc --version | head -n1)
3389         _depflags='-MMD'
3390         _cflags_speed='-O4'
3391         _cflags_size='-O2'
3392         _flags_filter=cparser_flags
3393     fi
3394
3395     eval ${pfx}_type=\$_type
3396     eval ${pfx}_ident=\$_ident
3397 }
3398
3399 set_ccvars(){
3400     eval ${1}_C=\${_cc_c-\${${1}_C}}
3401     eval ${1}_E=\${_cc_e-\${${1}_E}}
3402     eval ${1}_O=\${_cc_o-\${${1}_O}}
3403
3404     if [ -n "$_depflags" ]; then
3405         eval ${1}_DEPFLAGS=\$_depflags
3406     else
3407         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3408         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3409         eval DEP${1}FLAGS=\$_flags
3410     fi
3411 }
3412
3413 probe_cc cc "$cc"
3414 cflags_filter=$_flags_filter
3415 cflags_speed=$_cflags_speed
3416 cflags_size=$_cflags_size
3417 cflags_noopt=$_cflags_noopt
3418 add_cflags $_flags $_cflags
3419 cc_ldflags=$_ldflags
3420 set_ccvars CC
3421
3422 probe_cc hostcc "$host_cc"
3423 host_cflags_filter=$_flags_filter
3424 add_host_cflags  $_flags $_cflags
3425 set_ccvars HOSTCC
3426
3427 test -n "$cc_type" && enable $cc_type ||
3428     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3429
3430 : ${as_default:=$cc}
3431 : ${dep_cc_default:=$cc}
3432 : ${ld_default:=$cc}
3433 : ${host_ld_default:=$host_cc}
3434 set_default ar as dep_cc ld host_ld windres
3435
3436 probe_cc as "$as"
3437 asflags_filter=$_flags_filter
3438 add_asflags $_flags $_cflags
3439 set_ccvars AS
3440
3441 probe_cc ld "$ld"
3442 ldflags_filter=$_flags_filter
3443 add_ldflags $_flags $_ldflags
3444 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3445 LD_O=${_ld_o-$LD_O}
3446 LD_LIB=${_ld_lib-$LD_LIB}
3447 LD_PATH=${_ld_path-$LD_PATH}
3448
3449 probe_cc hostld "$host_ld"
3450 host_ldflags_filter=$_flags_filter
3451 add_host_ldflags $_flags $_ldflags
3452 HOSTLD_O=${_ld_o-$HOSTLD_O}
3453
3454 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3455     probe_cc depcc "$dep_cc"
3456     CCDEP=${_DEPCMD:-$DEPCMD}
3457     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3458     DEPCCFLAGS=$_flags
3459 fi
3460
3461 if $ar 2>&1 | grep -q Microsoft; then
3462     arflags="-nologo"
3463     ar_o='-out:$@'
3464 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3465     arflags="rq"
3466     ar_o='$@'
3467 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3468     arflags='-Xany -r -c'
3469     ar_o='$@'
3470 else
3471     arflags="rc"
3472     ar_o='$@'
3473 fi
3474
3475 add_cflags $extra_cflags
3476 add_cxxflags $extra_cxxflags
3477 add_asflags $extra_cflags
3478
3479 if test -n "$sysroot"; then
3480     case "$cc_type" in
3481         gcc|llvm_gcc|clang)
3482             add_cppflags --sysroot="$sysroot"
3483             add_ldflags --sysroot="$sysroot"
3484 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3485             add_cppflags -isysroot "$sysroot"
3486             add_ldflags -isysroot "$sysroot"
3487         ;;
3488         tms470)
3489             add_cppflags -I"$sysinclude"
3490             add_ldflags  --sysroot="$sysroot"
3491         ;;
3492     esac
3493 fi
3494
3495 if test "$cpu" = host; then
3496     enabled cross_compile &&
3497         die "--cpu=host makes no sense when cross-compiling."
3498
3499     case "$cc_type" in
3500         gcc|llvm_gcc)
3501             check_native(){
3502                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3503                 sed -n "/cc1.*$1=/{
3504                             s/.*$1=\\([^ ]*\\).*/\\1/
3505                             p
3506                             q
3507                         }" $TMPE
3508             }
3509             cpu=$(check_native -march || check_native -mcpu)
3510         ;;
3511     esac
3512
3513     test "${cpu:-host}" = host &&
3514         die "--cpu=host not supported with compiler $cc"
3515 fi
3516
3517 # Deal with common $arch aliases
3518 case "$arch" in
3519     aarch64|arm64)
3520         arch="aarch64"
3521     ;;
3522     arm*|iPad*|iPhone*)
3523         arch="arm"
3524     ;;
3525     mips*|IP*)
3526         arch="mips"
3527     ;;
3528     parisc*|hppa*)
3529         arch="parisc"
3530     ;;
3531     "Power Macintosh"|ppc*|powerpc*)
3532         arch="ppc"
3533     ;;
3534     s390|s390x)
3535         arch="s390"
3536     ;;
3537     sh4|sh)
3538         arch="sh4"
3539     ;;
3540     sun4u|sparc*)
3541         arch="sparc"
3542     ;;
3543     tilegx|tile-gx)
3544         arch="tilegx"
3545     ;;
3546     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3547         arch="x86"
3548     ;;
3549 esac
3550
3551 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3552 enable $arch
3553
3554 # Add processor-specific flags
3555 if enabled aarch64; then
3556
3557     case $cpu in
3558         armv*)
3559             cpuflags="-march=$cpu"
3560         ;;
3561         *)
3562             cpuflags="-mcpu=$cpu"
3563         ;;
3564     esac
3565
3566 elif enabled alpha; then
3567
3568     cpuflags="-mcpu=$cpu"
3569
3570 elif enabled arm; then
3571
3572     check_arm_arch() {
3573         check_cpp_condition stddef.h \
3574             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3575             $cpuflags
3576     }
3577
3578     probe_arm_arch() {
3579         if   check_arm_arch 4;        then echo armv4;
3580         elif check_arm_arch 4T;       then echo armv4t;
3581         elif check_arm_arch 5;        then echo armv5;
3582         elif check_arm_arch 5E;       then echo armv5e;
3583         elif check_arm_arch 5T;       then echo armv5t;
3584         elif check_arm_arch 5TE;      then echo armv5te;
3585         elif check_arm_arch 5TEJ;     then echo armv5te;
3586         elif check_arm_arch 6;        then echo armv6;
3587         elif check_arm_arch 6J;       then echo armv6j;
3588         elif check_arm_arch 6K;       then echo armv6k;
3589         elif check_arm_arch 6Z;       then echo armv6z;
3590         elif check_arm_arch 6ZK;      then echo armv6zk;
3591         elif check_arm_arch 6T2;      then echo armv6t2;
3592         elif check_arm_arch 7;        then echo armv7;
3593         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3594         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3595         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3596         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3597         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3598         fi
3599     }
3600
3601     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3602
3603     case $cpu in
3604         armv*)
3605             cpuflags="-march=$cpu"
3606             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3607         ;;
3608         *)
3609             cpuflags="-mcpu=$cpu"
3610             case $cpu in
3611                 cortex-a*)                               subarch=armv7a  ;;
3612                 cortex-r*)                               subarch=armv7r  ;;
3613                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3614                 arm11*)                                  subarch=armv6   ;;
3615                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3616                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3617                 *)                             subarch=$(probe_arm_arch) ;;
3618             esac
3619         ;;
3620     esac
3621
3622     case "$subarch" in
3623         armv5t*)    enable fast_clz                ;;
3624         armv[6-8]*)
3625             enable fast_clz
3626             disabled fast_unaligned || enable fast_unaligned
3627             ;;
3628     esac
3629
3630 elif enabled avr32; then
3631
3632     case $cpu in
3633         ap7[02]0[0-2])
3634             subarch="avr32_ap"
3635             cpuflags="-mpart=$cpu"
3636         ;;
3637         ap)
3638             subarch="avr32_ap"
3639             cpuflags="-march=$cpu"
3640         ;;
3641         uc3[ab]*)
3642             subarch="avr32_uc"
3643             cpuflags="-mcpu=$cpu"
3644         ;;
3645         uc)
3646             subarch="avr32_uc"
3647             cpuflags="-march=$cpu"
3648         ;;
3649     esac
3650
3651 elif enabled bfin; then
3652
3653     cpuflags="-mcpu=$cpu"
3654
3655 elif enabled mips; then
3656
3657     cpuflags="-march=$cpu"
3658
3659     case $cpu in
3660         24kc)
3661             disable mipsfpu
3662             disable mipsdspr1
3663             disable mipsdspr2
3664         ;;
3665         24kf*)
3666             disable mipsdspr1
3667             disable mipsdspr2
3668         ;;
3669         24kec|34kc|1004kc)
3670             disable mipsfpu
3671             disable mipsdspr2
3672         ;;
3673         24kef*|34kf*|1004kf*)
3674             disable mipsdspr2
3675         ;;
3676         74kc)
3677             disable mipsfpu
3678         ;;
3679     esac
3680
3681 elif enabled ppc; then
3682
3683     disable ldbrx
3684
3685     case $(tolower $cpu) in
3686         601|ppc601|powerpc601)
3687             cpuflags="-mcpu=601"
3688             disable altivec
3689         ;;
3690         603*|ppc603*|powerpc603*)
3691             cpuflags="-mcpu=603"
3692             disable altivec
3693         ;;
3694         604*|ppc604*|powerpc604*)
3695             cpuflags="-mcpu=604"
3696             disable altivec
3697         ;;
3698         g3|75*|ppc75*|powerpc75*)
3699             cpuflags="-mcpu=750"
3700             disable altivec
3701         ;;
3702         g4|745*|ppc745*|powerpc745*)
3703             cpuflags="-mcpu=7450"
3704         ;;
3705         74*|ppc74*|powerpc74*)
3706             cpuflags="-mcpu=7400"
3707         ;;
3708         g5|970|ppc970|powerpc970)
3709             cpuflags="-mcpu=970"
3710         ;;
3711         power[3-7]*)
3712             cpuflags="-mcpu=$cpu"
3713         ;;
3714         cell)
3715             cpuflags="-mcpu=cell"
3716             enable ldbrx
3717         ;;
3718         e500mc)
3719             cpuflags="-mcpu=e500mc"
3720             disable altivec
3721         ;;
3722         e500v2)
3723             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3724             disable altivec
3725             disable dcbzl
3726         ;;
3727         e500)
3728             cpuflags="-mcpu=8540 -mhard-float"
3729             disable altivec
3730             disable dcbzl
3731         ;;
3732     esac
3733
3734 elif enabled sparc; then
3735
3736     case $cpu in
3737         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3738             cpuflags="-mcpu=$cpu"
3739         ;;
3740         ultrasparc*|niagara[234])
3741             cpuflags="-mcpu=$cpu"
3742         ;;
3743     esac
3744
3745 elif enabled x86; then
3746
3747     case $cpu in
3748         i[345]86|pentium)
3749             cpuflags="-march=$cpu"
3750             disable mmx
3751         ;;
3752         # targets that do NOT support nopl and conditional mov (cmov)
3753         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3754             cpuflags="-march=$cpu"
3755             disable i686
3756         ;;
3757         # targets that do support nopl and conditional mov (cmov)
3758         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3759         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3760             cpuflags="-march=$cpu"
3761             enable i686
3762             enable fast_cmov
3763         ;;
3764         # targets that do support conditional mov but on which it's slow
3765         pentium4|pentium4m|prescott|nocona)
3766             cpuflags="-march=$cpu"
3767             enable i686
3768             disable fast_cmov
3769         ;;
3770     esac
3771
3772 fi
3773
3774 if [ "$cpu" != generic ]; then
3775     add_cflags  $cpuflags
3776     add_asflags $cpuflags
3777 fi
3778
3779 # compiler sanity check
3780 check_exec <<EOF
3781 int main(void){ return 0; }
3782 EOF
3783 if test "$?" != 0; then
3784     echo "$cc is unable to create an executable file."
3785     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3786         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3787         echo "Only do this if you know what cross compiling means."
3788     fi
3789     die "C compiler test failed."
3790 fi
3791
3792 add_cppflags -D_ISOC99_SOURCE
3793 add_cxxflags -D__STDC_CONSTANT_MACROS
3794 check_cflags -std=c99
3795 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3796 #include <stdlib.h>
3797 EOF
3798 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3799 #include <stdlib.h>
3800 EOF
3801
3802 add_host_cppflags -D_ISOC99_SOURCE
3803 check_host_cflags -std=c99
3804 check_host_cflags -Wall
3805 check_host_cflags -O3
3806
3807 check_64bit(){
3808     arch32=$1
3809     arch64=$2
3810     expr=$3
3811     check_code cc "" "int test[2*($expr) - 1]" &&
3812         subarch=$arch64 || subarch=$arch32
3813 }
3814
3815 case "$arch" in
3816     aarch64|alpha|ia64)
3817         spic=$shared
3818     ;;
3819     mips)
3820         check_64bit mips mips64 '_MIPS_SIM > 1'
3821         spic=$shared
3822     ;;
3823     parisc)
3824         check_64bit parisc parisc64 'sizeof(void *) > 4'
3825         spic=$shared
3826     ;;
3827     ppc)
3828         check_64bit ppc ppc64 'sizeof(void *) > 4'
3829         spic=$shared
3830     ;;
3831     s390)
3832         check_64bit s390 s390x 'sizeof(void *) > 4'
3833         spic=$shared
3834     ;;
3835     sparc)
3836         check_64bit sparc sparc64 'sizeof(void *) > 4'
3837         spic=$shared
3838     ;;
3839     x86)
3840         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3841         if test "$subarch" = "x86_64"; then
3842             spic=$shared
3843         fi
3844     ;;
3845     ppc)
3846         check_cc <<EOF && subarch="ppc64"
3847         int test[(int)sizeof(char*) - 7];
3848 EOF
3849     ;;
3850 esac
3851
3852 enable $subarch
3853 enabled spic && enable_weak pic
3854
3855 # OS specific
3856 case $target_os in
3857     aix)
3858         SHFLAGS=-shared
3859         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3860         enabled shared && add_ldflags -Wl,-brtl
3861         ;;
3862     haiku)
3863         prefix_default="/boot/common"
3864         network_extralibs="-lnetwork"
3865         host_libs=
3866         ;;
3867     sunos)
3868         SHFLAGS='-shared -Wl,-h,$$(@F)'
3869         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3870         network_extralibs="-lsocket -lnsl"
3871         # When using suncc to build, the Solaris linker will mark
3872         # an executable with each instruction set encountered by
3873         # the Solaris assembler.  As our libraries contain their own
3874         # guards for processor-specific code, instead suppress
3875         # generation of the HWCAPS ELF section on Solaris x86 only.
3876         enabled_all suncc x86 &&
3877             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3878             add_ldflags -Wl,-M,mapfile
3879         nm_default='nm -P -g'
3880         ;;
3881     netbsd)
3882         disable symver
3883         oss_indev_extralibs="-lossaudio"
3884         oss_outdev_extralibs="-lossaudio"
3885         enabled gcc || check_ldflags -Wl,-zmuldefs
3886         ;;
3887     openbsd|bitrig)
3888         disable symver
3889         SHFLAGS='-shared'
3890         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3891         SLIB_INSTALL_LINKS=
3892         oss_indev_extralibs="-lossaudio"
3893         oss_outdev_extralibs="-lossaudio"
3894         ;;
3895     dragonfly)
3896         disable symver
3897         ;;
3898     freebsd)
3899         ;;
3900     bsd/os)
3901         add_extralibs -lpoll -lgnugetopt
3902         strip="strip -d"
3903         ;;
3904     darwin)
3905         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3906         enabled ppc && add_asflags -force_cpusubtype_ALL
3907         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3908         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3909         strip="${strip} -x"
3910         add_ldflags -Wl,-dynamic,-search_paths_first
3911         SLIBSUF=".dylib"
3912         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3913         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3914         objformat="macho"
3915         enabled x86_64 && objformat="macho64"
3916         enabled_any pic shared ||
3917             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3918         ;;
3919     mingw32*)
3920         if test $target_os = "mingw32ce"; then
3921             disable network
3922         else
3923             target_os=mingw32
3924         fi
3925         LIBTARGET=i386
3926         if enabled x86_64; then
3927             LIBTARGET="i386:x86-64"
3928         elif enabled arm; then
3929             LIBTARGET=arm-wince
3930         fi
3931         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3932         check_ldflags -Wl,--nxcompat
3933         check_ldflags -Wl,--dynamicbase
3934         shlibdir_default="$bindir_default"
3935         SLIBPREF=""
3936         SLIBSUF=".dll"
3937         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3938         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3939         dlltool="${cross_prefix}dlltool"
3940         if check_cmd lib.exe -list; then
3941             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3942             if enabled x86_64; then
3943                 LIBTARGET=x64
3944             fi
3945         elif check_cmd $dlltool --version; then
3946             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3947         fi
3948         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3949         SLIB_INSTALL_LINKS=
3950         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3951         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3952         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3953         objformat="win32"
3954         ranlib=:
3955         enable dos_paths
3956         ;;
3957     win32|win64)
3958         disable symver
3959         if enabled shared; then
3960             # Link to the import library instead of the normal static library
3961             # for shared libs.
3962             LD_LIB='%.lib'
3963             # Cannot build both shared and static libs with MSVC or icl.
3964             disable static
3965         fi
3966         shlibdir_default="$bindir_default"
3967         SLIBPREF=""
3968         SLIBSUF=".dll"
3969         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3970         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3971         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3972         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3973         SLIB_INSTALL_LINKS=
3974         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3975         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3976         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3977         objformat="win32"
3978         ranlib=:
3979         enable dos_paths
3980         ;;
3981     cygwin*)
3982         target_os=cygwin
3983         shlibdir_default="$bindir_default"
3984         SLIBPREF="cyg"
3985         SLIBSUF=".dll"
3986         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3987         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3988         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3989         SLIB_INSTALL_LINKS=
3990         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3991         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3992         objformat="win32"
3993         enable dos_paths
3994         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3995         ;;
3996     *-dos|freedos|opendos)
3997         network_extralibs="-lsocket"
3998         objformat="coff"
3999         enable dos_paths
4000         add_cppflags -U__STRICT_ANSI__
4001         ;;
4002     linux)
4003         enable dv1394
4004         ;;
4005     irix*)
4006         target_os=irix
4007         ranlib="echo ignoring ranlib"
4008         ;;
4009     os/2*)
4010         strip="lxlite -CS"
4011         ln_s="cp -f"
4012         objformat="aout"
4013         add_cppflags -D_GNU_SOURCE
4014         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4015         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4016         LIBSUF="_s.a"
4017         SLIBPREF=""
4018         SLIBSUF=".dll"
4019         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4020         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4021         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4022             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4023             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4024             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4025             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4026             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4027         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4028             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4029         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4030         enable dos_paths
4031         enable_weak os2threads
4032         ;;
4033     gnu/kfreebsd)
4034         add_cppflags -D_BSD_SOURCE
4035         ;;
4036     gnu)
4037         ;;
4038     qnx)
4039         add_cppflags -D_QNX_SOURCE
4040         network_extralibs="-lsocket"
4041         ;;
4042     symbian)
4043         SLIBSUF=".dll"
4044         enable dos_paths
4045         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4046         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4047         add_ldflags -Wl,--target1-abs,--no-undefined \
4048                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4049                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4050         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4051                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4052                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4053         ;;
4054     osf1)
4055         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4056         ;;
4057     minix)
4058         ;;
4059     plan9)
4060         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4061                      -D_REENTRANT_SOURCE        \
4062                      -D_RESEARCH_SOURCE         \
4063                      -DFD_SETSIZE=96            \
4064                      -DHAVE_SOCK_OPTS
4065         add_compat strtod.o strtod=avpriv_strtod
4066         network_extralibs='-lbsd'
4067         exeobjs=compat/plan9/main.o
4068         disable ffserver
4069         cp_f='cp'
4070         ;;
4071     none)
4072         ;;
4073     *)
4074         die "Unknown OS '$target_os'."
4075         ;;
4076 esac
4077
4078 # determine libc flavour
4079
4080 probe_libc(){
4081     pfx=$1
4082     pfx_no_=${pfx%_}
4083     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4084     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4085         eval ${pfx}libc_type=uclibc
4086         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4087     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4088         eval ${pfx}libc_type=glibc
4089         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4090     # MinGW headers can be installed on Cygwin, so check for newlib first.
4091     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4092         eval ${pfx}libc_type=newlib
4093         add_${pfx}cppflags -U__STRICT_ANSI__
4094     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4095     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4096         eval ${pfx}libc_type=mingw64
4097         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4098             add_compat msvcrt/snprintf.o
4099             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4100         fi
4101         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4102         eval test \$${pfx_no_}cc_type = "gcc" &&
4103             add_${pfx}cppflags -D__printf__=__gnu_printf__
4104     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4105          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4106         eval ${pfx}libc_type=mingw32
4107         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4108             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4109             die "ERROR: MinGW32 runtime version must be >= 3.15."
4110         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4111         eval test \$${pfx_no_}cc_type = "gcc" &&
4112             add_${pfx}cppflags -D__printf__=__gnu_printf__
4113     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4114         eval ${pfx}libc_type=msvcrt
4115         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4116         # 0x601 by default unless something else is set by the user.
4117         # This can easily lead to us detecting functions only present
4118         # in such new versions and producing binaries requiring windows 7.0.
4119         # Therefore explicitly set the default to XP unless the user has
4120         # set something else on the command line.
4121         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4122             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4123     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4124         eval ${pfx}libc_type=klibc
4125     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4126         eval ${pfx}libc_type=bionic
4127     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4128         eval ${pfx}libc_type=solaris
4129         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4130     fi
4131 }
4132
4133 probe_libc
4134 test -n "$libc_type" && enable libc_$libc_type
4135 probe_libc host_
4136 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4137
4138 case $libc_type in
4139     bionic)
4140         add_compat strtod.o strtod=avpriv_strtod
4141         ;;
4142     msvcrt)
4143         add_compat strtod.o strtod=avpriv_strtod
4144         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4145                                      _snprintf=avpriv_snprintf  \
4146                                      vsnprintf=avpriv_vsnprintf
4147         ;;
4148 esac
4149
4150 # hacks for compiler/libc/os combinations
4151
4152 if enabled_all tms470 libc_glibc; then
4153     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4154     add_cppflags -D__USER_LABEL_PREFIX__=
4155     add_cppflags -D__builtin_memset=memset
4156     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4157     add_cflags   -pds=48    # incompatible redefinition of macro
4158 fi
4159
4160 if enabled_all ccc libc_glibc; then
4161     add_ldflags -Wl,-z,now  # calls to libots crash without this
4162 fi
4163
4164 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4165     add_cppflags '-I\$(SRC_PATH)/compat/float'
4166
4167 esc(){
4168     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4169 }
4170
4171 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4172
4173 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4174
4175 set_default $PATHS_LIST
4176 set_default nm
4177
4178 # we need to build at least one lib type
4179 if ! enabled_any static shared; then
4180     cat <<EOF
4181 At least one library type must be built.
4182 Specify --enable-static to build the static libraries or --enable-shared to
4183 build the shared libraries as well. To only build the shared libraries specify
4184 --disable-static in addition to --enable-shared.
4185 EOF
4186     exit 1;
4187 fi
4188
4189 die_license_disabled() {
4190     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4191 }
4192
4193 die_license_disabled_gpl() {
4194     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4195 }
4196
4197 die_license_disabled gpl frei0r
4198 die_license_disabled gpl libcdio
4199 die_license_disabled gpl libutvideo
4200 die_license_disabled gpl libvidstab
4201 die_license_disabled gpl libx264
4202 die_license_disabled gpl libx265
4203 die_license_disabled gpl libxavs
4204 die_license_disabled gpl libxvid
4205 die_license_disabled gpl libzvbi
4206 die_license_disabled gpl x11grab
4207
4208 die_license_disabled nonfree libaacplus
4209 die_license_disabled nonfree libfaac
4210 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4211 enabled gpl && die_license_disabled_gpl nonfree openssl
4212
4213 die_license_disabled version3 libopencore_amrnb
4214 die_license_disabled version3 libopencore_amrwb
4215 die_license_disabled version3 libvo_aacenc
4216 die_license_disabled version3 libvo_amrwbenc
4217
4218 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4219
4220 disabled optimizations || check_cflags -fomit-frame-pointer
4221
4222 enable_weak_pic() {
4223     disabled pic && return
4224     enable pic
4225     add_cppflags -DPIC
4226     case "$target_os" in
4227     mingw*|cygwin*)
4228         ;;
4229     *)
4230         add_cflags -fPIC
4231         ;;
4232     esac
4233     add_asflags  -fPIC
4234 }
4235
4236 enabled pic && enable_weak_pic
4237
4238 check_cc <<EOF || die "Symbol mangling check failed."
4239 int ff_extern;
4240 EOF
4241 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4242 extern_prefix=${sym%%ff_extern*}
4243
4244 check_cc <<EOF && enable_weak inline_asm
4245 void foo(void) { __asm__ volatile ("" ::); }
4246 EOF
4247
4248 _restrict=
4249 for restrict_keyword in restrict __restrict__ __restrict; do
4250     check_cc <<EOF && _restrict=$restrict_keyword && break
4251 void foo(char * $restrict_keyword p);
4252 EOF
4253 done
4254
4255 check_cc <<EOF && enable pragma_deprecated
4256 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4257 EOF
4258
4259 check_cc <<EOF && enable attribute_packed
4260 struct { int x; } __attribute__((packed)) x;
4261 EOF
4262
4263 check_cc <<EOF && enable attribute_may_alias
4264 union { int x; } __attribute__((may_alias)) x;
4265 EOF
4266
4267 check_cc <<EOF || die "endian test failed"
4268 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4269 EOF
4270 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4271
4272
4273 if enabled asm; then
4274     enabled     arm         && nogas=die
4275     enabled_all ppc altivec && nogas=warn
4276     as=${gas:=$as}
4277     check_as <<EOF && enable gnu_as || \
4278         $nogas "GNU assembler not found, install gas-preprocessor"
4279 .macro m n
4280 \n: .int 0
4281 .endm
4282 m x
4283 EOF
4284
4285     check_as <<EOF && enable as_func
4286 .func test
4287 .endfunc
4288 EOF
4289 fi
4290
4291 check_inline_asm inline_asm_labels '"1:\n"'
4292
4293 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4294
4295 if enabled aarch64; then
4296     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4297     # internal assembler in clang 3.3 does not support this instruction
4298     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4299     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4300
4301     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4302
4303 elif enabled alpha; then
4304
4305     check_cflags -mieee
4306
4307 elif enabled arm; then
4308
4309     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4310 float func(float a, float b){ return a+b; }
4311 EOF
4312
4313     enabled thumb && check_cflags -mthumb || check_cflags -marm
4314
4315     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4316         enable vfp_args
4317     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4318         case "${cross_prefix:-$cc}" in
4319             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4320             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4321 __asm__ (".eabi_attribute 28, 1");
4322 int main(void) { return 0; }
4323 EOF
4324         esac
4325         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4326     fi
4327
4328     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4329     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4330     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4331     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4332     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4333     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4334
4335     [ $target_os = linux ] ||
4336         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4337             $ARCH_EXT_LIST_ARM
4338
4339     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4340
4341     check_as <<EOF && enable as_dn_directive
4342 ra .dn d0.i16
4343 .unreq ra
4344 EOF
4345
4346     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4347
4348 elif enabled mips; then
4349
4350     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4351     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4352      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4353     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4354      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4355     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4356      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4357     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4358      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4359
4360 elif enabled parisc; then
4361
4362     if enabled gcc; then
4363         case $($cc -dumpversion) in
4364             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4365         esac
4366     fi
4367
4368 elif enabled ppc; then
4369
4370     enable local_aligned_8 local_aligned_16 local_aligned_32
4371
4372     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4373     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4374     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4375     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4376
4377     # AltiVec flags: The FSF version of GCC differs from the Apple version
4378     if enabled altivec; then
4379         check_cflags -maltivec -mabi=altivec &&
4380         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4381         check_cflags -faltivec
4382
4383         # check if our compiler supports Motorola AltiVec C API
4384         check_cc <<EOF || disable altivec
4385 $inc_altivec_h
4386 int main(void) {
4387     vector signed int v1 = (vector signed int) { 0 };
4388     vector signed int v2 = (vector signed int) { 1 };
4389     v1 = vec_add(v1, v2);
4390     return 0;
4391 }
4392 EOF
4393
4394         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4395     fi
4396
4397 elif enabled x86; then
4398
4399     check_builtin rdtsc    intrin.h   "__rdtsc()"
4400     check_builtin mm_empty mmintrin.h "_mm_empty()"
4401
4402     enable local_aligned_8 local_aligned_16 local_aligned_32
4403
4404     # check whether EBP is available on x86
4405     # As 'i' is stored on the stack, this program will crash
4406     # if the base pointer is used to access it because the
4407     # base pointer is cleared in the inline assembly code.
4408     check_exec_crash <<EOF && enable ebp_available
4409 volatile int i=0;
4410 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4411 return i;
4412 EOF
4413
4414     # check whether EBX is available on x86
4415     check_inline_asm ebx_available '""::"b"(0)' &&
4416         check_inline_asm ebx_available '"":::"%ebx"'
4417
4418     # check whether xmm clobbers are supported
4419     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4420
4421     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4422         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4423
4424     # check whether binutils is new enough to compile AVX/SSSE3/MMXEXT
4425     enabled avx    && check_inline_asm avx_inline    '"vextractf128 $1, %ymm0, %xmm1"'
4426     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4427     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4428
4429     if ! disabled_any asm mmx yasm; then
4430         if check_cmd $yasmexe --version; then
4431             enabled x86_64 && yasm_extra="-m amd64"
4432             yasm_debug="-g dwarf2"
4433         elif check_cmd nasm -v; then
4434             yasmexe=nasm
4435             yasm_debug="-g -F dwarf"
4436             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4437         fi
4438
4439         YASMFLAGS="-f $objformat $yasm_extra"
4440         enabled pic               && append YASMFLAGS "-DPIC"
4441         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4442         case "$objformat" in
4443             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4444         esac
4445
4446         check_yasm "movbe ecx, [5]" && enable yasm ||
4447             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4448         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4449         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4450         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4451         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4452         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4453         check_yasm "CPU amdnop" || disable cpunop
4454     fi
4455
4456     case "$cpu" in
4457         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4458             disable fast_clz
4459         ;;
4460     esac
4461
4462 fi
4463
4464 check_ldflags -Wl,--as-needed
4465
4466 if check_func dlopen; then
4467     ldl=
4468 elif check_func dlopen -ldl; then
4469     ldl=-ldl
4470 fi
4471
4472 if ! disabled network; then
4473     check_func getaddrinfo $network_extralibs
4474     check_func getservbyport $network_extralibs
4475     check_func inet_aton $network_extralibs
4476
4477     check_type netdb.h "struct addrinfo"
4478     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4479     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4480     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4481     check_type poll.h "struct pollfd"
4482     check_type netinet/sctp.h "struct sctp_event_subscribe"
4483     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4484     check_type netinet/in.h "struct sockaddr_in6"
4485     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4486     check_type "sys/types.h sys/socket.h" socklen_t
4487
4488     # Prefer arpa/inet.h over winsock2
4489     if check_header arpa/inet.h ; then
4490         check_func closesocket
4491     elif check_header winsock2.h ; then
4492         check_func_headers winsock2.h closesocket -lws2 &&
4493             network_extralibs="-lws2" ||
4494         { check_func_headers winsock2.h closesocket -lws2_32 &&
4495             network_extralibs="-lws2_32"; } || disable winsock2_h network
4496         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4497
4498         check_type ws2tcpip.h socklen_t
4499         check_type ws2tcpip.h "struct addrinfo"
4500         check_type ws2tcpip.h "struct group_source_req"
4501         check_type ws2tcpip.h "struct ip_mreq_source"
4502         check_type ws2tcpip.h "struct ipv6_mreq"
4503         check_type winsock2.h "struct pollfd"
4504         check_struct winsock2.h "struct sockaddr" sa_len
4505         check_type ws2tcpip.h "struct sockaddr_in6"
4506         check_type ws2tcpip.h "struct sockaddr_storage"
4507     else
4508         disable network
4509     fi
4510 fi
4511
4512 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4513 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4514 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4515 check_builtin sarestart signal.h "SA_RESTART"
4516 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4517
4518 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4519 check_func  ${malloc_prefix}memalign            && enable memalign
4520 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4521
4522 check_func  access
4523 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4524 check_func  fcntl
4525 check_func  fork
4526 check_func  gethrtime
4527 check_func  getopt
4528 check_func  getrusage
4529 check_func  gettimeofday
4530 check_func  isatty
4531 check_func  localtime_r
4532 check_func  mach_absolute_time
4533 check_func  mkstemp
4534 check_func  mmap
4535 check_func  mprotect
4536 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4537 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4538 check_func  sched_getaffinity
4539 check_func  setrlimit
4540 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4541 check_func  strerror_r
4542 check_func  sysconf
4543 check_func  sysctl
4544 check_func  usleep
4545
4546 check_func_headers conio.h kbhit
4547 check_func_headers io.h setmode
4548 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4549 check_func_headers stdlib.h getenv
4550
4551 check_func_headers windows.h CoTaskMemFree -lole32
4552 check_func_headers windows.h GetProcessAffinityMask
4553 check_func_headers windows.h GetProcessTimes
4554 check_func_headers windows.h GetSystemTimeAsFileTime
4555 check_func_headers windows.h MapViewOfFile
4556 check_func_headers windows.h PeekNamedPipe
4557 check_func_headers windows.h SetConsoleTextAttribute
4558 check_func_headers windows.h Sleep
4559 check_func_headers windows.h VirtualAlloc
4560 check_func_headers glob.h glob
4561 enabled xlib &&
4562     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4563
4564 check_header cl/cl.h
4565 check_header direct.h
4566 check_header dlfcn.h
4567 check_header dxva.h
4568 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4569 check_header io.h
4570 check_header libcrystalhd/libcrystalhd_if.h
4571 check_header mach/mach_time.h
4572 check_header malloc.h
4573 check_header poll.h
4574 check_header sys/mman.h
4575 check_header sys/param.h
4576 check_header sys/resource.h
4577 check_header sys/select.h
4578 check_header sys/time.h
4579 check_header sys/un.h
4580 check_header termios.h
4581 check_header unistd.h
4582 check_header vdpau/vdpau.h
4583 check_header vdpau/vdpau_x11.h
4584 check_header VideoDecodeAcceleration/VDADecoder.h
4585 check_header windows.h
4586 check_header X11/extensions/XvMClib.h
4587 check_header asm/types.h
4588
4589 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4590 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4591 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4592
4593 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4594
4595 if ! disabled w32threads && ! enabled pthreads; then
4596     check_func_headers "windows.h process.h" _beginthreadex &&
4597         enable w32threads || disable w32threads
4598 fi
4599
4600 # check for some common methods of building with pthread support
4601 # do this before the optional library checks as some of them require pthreads
4602 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4603     enable pthreads
4604     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4605         add_cflags -pthread
4606         add_extralibs -pthread
4607     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4608         add_cflags -pthreads
4609         add_extralibs -pthreads
4610     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4611         add_cflags -ldl -pthread
4612         add_extralibs -ldl -pthread
4613     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4614         add_extralibs -lpthreadGC2
4615     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4616         :
4617     elif ! check_func pthread_join && ! check_func pthread_create; then
4618         disable pthreads
4619     fi
4620     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4621 fi
4622
4623
4624 if enabled pthreads; then
4625   check_func pthread_cancel
4626 fi
4627
4628 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4629 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4630
4631 check_lib math.h sin -lm && LIBM="-lm"
4632 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4633
4634 atan2f_args=2
4635 ldexpf_args=2
4636 powf_args=2
4637
4638 for func in $MATH_FUNCS; do
4639     eval check_mathfunc $func \${${func}_args:-1}
4640 done
4641
4642 # these are off by default, so fail if requested and not available
4643 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4644 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4645                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4646                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4647 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4648 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4649 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4650 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4651 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4652 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4653 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4654 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4655 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4656 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4657                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4658                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4659 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4660 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4661 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4662 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"
4663 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4664 enabled fontconfig        && enable libfontconfig
4665 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4666 enabled libfreetype       && require_libfreetype
4667 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4668 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4669                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4670                                done || die "ERROR: libgsm not found"; }
4671 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4672 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4673 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4674 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4675 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4676 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4677 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4678 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4679                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4680                                die "ERROR: libopenjpeg not found"; }
4681 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4682 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4683 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4684 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4685 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4686 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4687 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4688 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4689 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4690 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4691     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4692     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4693 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4694 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4695                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4696                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4697 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4698 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4699 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4700 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4701 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4702 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4703 enabled libvpx            && {
4704     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4705                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4706     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 ||
4707                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4708     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4709     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; } }
4710 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4711 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4712 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4713                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4714                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4715 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4716                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4717                                die "ERROR: libx265 version must be >= 13."; }
4718 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4719 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4720 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4721 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4722 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4723                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4724                                die "ERROR: openal not found"; } &&
4725                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4726                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4727 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4728                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4729                                die "ERROR: opencl not found"; } &&
4730                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4731                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4732                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4733 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4734                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4735                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4736                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4737                                die "ERROR: opengl not found."
4738                              }
4739 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4740                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4741                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4742                                die "ERROR: openssl not found"; }
4743 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4744
4745 if enabled gnutls; then
4746     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4747     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4748 fi
4749
4750 # libdc1394 check
4751 if enabled libdc1394; then
4752     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4753         enable libdc1394_2; } ||
4754     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4755         enable libdc1394_1; } ||
4756     die "ERROR: No version of libdc1394 found "
4757 fi
4758
4759 SDL_CONFIG="${cross_prefix}sdl-config"
4760 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4761     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4762     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4763     enable sdl
4764 else
4765   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4766     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4767     sdl_libs=$("${SDL_CONFIG}" --libs)
4768     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4769     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4770     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4771     enable sdl
4772   fi
4773 fi
4774 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4775
4776 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4777 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4778 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4779 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4780 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4781
4782 check_header linux/fb.h
4783 check_header linux/videodev.h
4784 check_header linux/videodev2.h
4785 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4786
4787 check_header sys/videoio.h
4788
4789 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4790 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4791 # w32api 3.12 had it defined wrong
4792 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4793
4794 check_type "dshow.h" IBaseFilter
4795
4796 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4797 { check_header dev/bktr/ioctl_meteor.h &&
4798   check_header dev/bktr/ioctl_bt848.h; } ||
4799 { check_header machine/ioctl_meteor.h &&
4800   check_header machine/ioctl_bt848.h; } ||
4801 { check_header dev/video/meteor/ioctl_meteor.h &&
4802   check_header dev/video/bktr/ioctl_bt848.h; } ||
4803 check_header dev/ic/bt8xx.h
4804
4805 check_header sndio.h
4806 if check_struct sys/soundcard.h audio_buf_info bytes; then
4807     enable_safe sys/soundcard.h
4808 else
4809     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4810     #include <sys/soundcard.h>
4811     audio_buf_i