configure: try to fix the disappearing "r" bug in fate
[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 "$logfile" produced by configure as this will help
420 solving the problem.
421 EOF
422     fi
423     exit 1
424 }
425
426 # Avoid locale weirdness, besides we really just want to translate ASCII.
427 toupper(){
428     echo "$@" | 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     asm_mod_q
1722     attribute_may_alias
1723     attribute_packed
1724     ebp_available
1725     ebx_available
1726     gnu_as
1727     gnu_windres
1728     ibm_asm
1729     inline_asm_labels
1730     inline_asm_nonlocal_labels
1731     inline_asm_direct_symbol_refs
1732     pragma_deprecated
1733     rsync_contimeout
1734     symver_asm_label
1735     symver_gnu_asm
1736     vfp_args
1737     xform_asm
1738     xmm_clobbers
1739 "
1740
1741 TYPES_LIST="
1742     socklen_t
1743     struct_addrinfo
1744     struct_group_source_req
1745     struct_ip_mreq_source
1746     struct_ipv6_mreq
1747     struct_pollfd
1748     struct_rusage_ru_maxrss
1749     struct_sctp_event_subscribe
1750     struct_sockaddr_in6
1751     struct_sockaddr_sa_len
1752     struct_sockaddr_storage
1753     struct_stat_st_mtim_tv_nsec
1754     struct_v4l2_frmivalenum_discrete
1755 "
1756
1757 HAVE_LIST="
1758     $ARCH_EXT_LIST
1759     $(add_suffix _external $ARCH_EXT_LIST)
1760     $(add_suffix _inline   $ARCH_EXT_LIST)
1761     $ARCH_FEATURES
1762     $ATOMICS_LIST
1763     $BUILTIN_LIST
1764     $HAVE_LIST_CMDLINE
1765     $HAVE_LIST_PUB
1766     $HEADERS_LIST
1767     $MATH_FUNCS
1768     $SYSTEM_FUNCS
1769     $THREADS_LIST
1770     $TOOLCHAIN_FEATURES
1771     $TYPES_LIST
1772     atomics_native
1773     dos_paths
1774     dxva2api_cobj
1775     dxva2_lib
1776     libc_msvcrt
1777     libdc1394_1
1778     libdc1394_2
1779     makeinfo
1780     perl
1781     pod2man
1782     sdl
1783     texi2html
1784     threads
1785     vdpau_x11
1786     xlib
1787 "
1788
1789 # options emitted with CONFIG_ prefix but not available on the command line
1790 CONFIG_EXTRA="
1791     aandcttables
1792     ac3dsp
1793     audio_frame_queue
1794     cabac
1795     dsputil
1796     exif
1797     frame_thread_encoder
1798     gcrypt
1799     golomb
1800     gplv3
1801     h263dsp
1802     h264chroma
1803     h264dsp
1804     h264pred
1805     h264qpel
1806     hpeldsp
1807     huffman
1808     intrax8
1809     lgplv3
1810     llviddsp
1811     lpc
1812     mpegaudio
1813     mpegaudiodsp
1814     mpegvideo
1815     mpegvideoenc
1816     nettle
1817     rangecoder
1818     riffdec
1819     riffenc
1820     rtpdec
1821     rtpenc_chain
1822     sinewin
1823     tpeldsp
1824     videodsp
1825     vp3dsp
1826 "
1827
1828 CMDLINE_SELECT="
1829     $ARCH_EXT_LIST
1830     $CONFIG_LIST
1831     $HAVE_LIST_CMDLINE
1832     $THREADS_LIST
1833     asm
1834     cross_compile
1835     debug
1836     extra_warnings
1837     logging
1838     lto
1839     optimizations
1840     rpath
1841     stripping
1842 "
1843
1844 PATHS_LIST="
1845     bindir
1846     datadir
1847     docdir
1848     incdir
1849     libdir
1850     mandir
1851     prefix
1852     shlibdir
1853 "
1854
1855 CMDLINE_SET="
1856     $PATHS_LIST
1857     ar
1858     arch
1859     as
1860     assert_level
1861     build_suffix
1862     cc
1863     cpu
1864     cross_prefix
1865     cxx
1866     dep_cc
1867     extra_version
1868     gas
1869     host_cc
1870     host_cflags
1871     host_ld
1872     host_ldflags
1873     host_libs
1874     host_os
1875     install
1876     ld
1877     logfile
1878     malloc_prefix
1879     nm
1880     optflags
1881     pkg_config
1882     pkg_config_flags
1883     progs_suffix
1884     random_seed
1885     ranlib
1886     samples
1887     strip
1888     sysinclude
1889     sysroot
1890     target_exec
1891     target_os
1892     target_path
1893     target_samples
1894     tempprefix
1895     toolchain
1896     valgrind
1897     yasmexe
1898 "
1899
1900 CMDLINE_APPEND="
1901     extra_cflags
1902     extra_cxxflags
1903     host_cppflags
1904 "
1905
1906 # code dependency declarations
1907
1908 # architecture extensions
1909
1910 armv5te_deps="arm"
1911 armv6_deps="arm"
1912 armv6t2_deps="arm"
1913 armv8_deps="aarch64"
1914 neon_deps_any="aarch64 arm"
1915 vfp_deps_any="aarch64 arm"
1916 vfpv3_deps="vfp"
1917
1918 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1919
1920 mipsfpu_deps="mips"
1921 mips32r2_deps="mips"
1922 mipsdspr1_deps="mips"
1923 mipsdspr2_deps="mips"
1924
1925 altivec_deps="ppc"
1926 ppc4xx_deps="ppc"
1927
1928 cpunop_deps="i686"
1929 x86_64_select="i686"
1930 x86_64_suggest="fast_cmov"
1931
1932 amd3dnow_deps="mmx"
1933 amd3dnowext_deps="amd3dnow"
1934 i686_deps="x86"
1935 mmx_deps="x86"
1936 mmxext_deps="mmx"
1937 sse_deps="mmxext"
1938 sse2_deps="sse"
1939 sse3_deps="sse2"
1940 ssse3_deps="sse3"
1941 sse4_deps="ssse3"
1942 sse42_deps="sse4"
1943 avx_deps="sse42"
1944 xop_deps="avx"
1945 fma3_deps="avx"
1946 fma4_deps="avx"
1947 avx2_deps="avx"
1948
1949 mmx_external_deps="yasm"
1950 mmx_inline_deps="inline_asm"
1951 mmx_suggest="mmx_external mmx_inline"
1952
1953 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1954     eval dep=\$${ext}_deps
1955     eval ${ext}_external_deps='"${dep}_external"'
1956     eval ${ext}_inline_deps='"${dep}_inline"'
1957     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1958 done
1959
1960 aligned_stack_if_any="aarch64 ppc x86"
1961 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1962 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1963 fast_unaligned_if_any="aarch64 ppc x86"
1964
1965 need_memalign="altivec neon sse"
1966
1967 # system capabilities
1968
1969 symver_if_any="symver_asm_label symver_gnu_asm"
1970
1971 # threading support
1972 atomics_gcc_if="sync_val_compare_and_swap"
1973 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1974 atomics_win32_if="MemoryBarrier"
1975 atomics_native_if_any="$ATOMICS_LIST"
1976 w32threads_deps="atomics_native"
1977 threads_if_any="$THREADS_LIST"
1978
1979 # subsystems
1980 dct_select="rdft"
1981 error_resilience_select="dsputil"
1982 frame_thread_encoder_deps="encoders threads"
1983 mdct_select="fft"
1984 rdft_select="fft"
1985 mpegaudio_select="mpegaudiodsp"
1986 mpegaudiodsp_select="dct"
1987 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1988 mpegvideoenc_select="dsputil mpegvideo"
1989
1990 # decoders / encoders
1991 aac_decoder_select="mdct sinewin"
1992 aac_encoder_select="audio_frame_queue mdct sinewin"
1993 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1994 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1995 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
1996 ac3_encoder_select="mdct ac3dsp dsputil"
1997 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1998 aic_decoder_select="dsputil golomb"
1999 alac_encoder_select="lpc"
2000 als_decoder_select="dsputil"
2001 amrnb_decoder_select="lsp"
2002 amrwb_decoder_select="lsp"
2003 amv_decoder_select="sp5x_decoder exif"
2004 amv_encoder_select="aandcttables"
2005 ape_decoder_select="dsputil"
2006 asv1_decoder_select="dsputil"
2007 asv1_encoder_select="dsputil"
2008 asv2_decoder_select="dsputil"
2009 asv2_encoder_select="dsputil"
2010 atrac1_decoder_select="mdct sinewin"
2011 atrac3_decoder_select="mdct"
2012 atrac3p_decoder_select="mdct sinewin"
2013 avrn_decoder_select="exif"
2014 bink_decoder_select="dsputil hpeldsp"
2015 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2016 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2017 cavs_decoder_select="dsputil golomb h264chroma videodsp"
2018 cllc_decoder_select="dsputil"
2019 comfortnoise_encoder_select="lpc"
2020 cook_decoder_select="dsputil mdct sinewin"
2021 cscd_decoder_select="lzo"
2022 cscd_decoder_suggest="zlib"
2023 dca_decoder_select="mdct"
2024 dirac_decoder_select="dsputil dwt golomb videodsp"
2025 dnxhd_decoder_select="dsputil"
2026 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2027 dvvideo_decoder_select="dsputil"
2028 dvvideo_encoder_select="dsputil"
2029 dxa_decoder_select="zlib"
2030 eac3_decoder_select="ac3_decoder"
2031 eac3_encoder_select="ac3_encoder"
2032 eamad_decoder_select="aandcttables dsputil mpegvideo"
2033 eatgq_decoder_select="aandcttables"
2034 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2035 exr_decoder_select="zlib"
2036 ffv1_decoder_select="golomb rangecoder"
2037 ffv1_encoder_select="rangecoder"
2038 ffvhuff_decoder_select="huffyuv_decoder"
2039 ffvhuff_encoder_select="huffyuv_encoder"
2040 fic_decoder_select="golomb"
2041 flac_decoder_select="golomb"
2042 flac_encoder_select="dsputil golomb lpc"
2043 flashsv_decoder_select="zlib"
2044 flashsv_encoder_select="zlib"
2045 flashsv2_encoder_select="zlib"
2046 flashsv2_decoder_select="zlib"
2047 flv_decoder_select="h263_decoder"
2048 flv_encoder_select="h263_encoder"
2049 fourxm_decoder_select="dsputil"
2050 fraps_decoder_select="dsputil huffman"
2051 g2m_decoder_select="dsputil zlib"
2052 g729_decoder_select="dsputil"
2053 h261_decoder_select="error_resilience mpegvideo"
2054 h261_encoder_select="aandcttables mpegvideoenc"
2055 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2056 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2057 h263i_decoder_select="h263_decoder"
2058 h263p_encoder_select="h263_encoder"
2059 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2060 h264_decoder_suggest="error_resilience"
2061 hevc_decoder_select="cabac dsputil golomb videodsp"
2062 huffyuv_decoder_select="dsputil llviddsp"
2063 huffyuv_encoder_select="dsputil huffman llviddsp"
2064 iac_decoder_select="imc_decoder"
2065 imc_decoder_select="dsputil fft mdct sinewin"
2066 indeo3_decoder_select="hpeldsp"
2067 interplay_video_decoder_select="hpeldsp"
2068 jpegls_decoder_select="golomb mjpeg_decoder"
2069 jpegls_encoder_select="golomb"
2070 jv_decoder_select="dsputil"
2071 lagarith_decoder_select="dsputil"
2072 ljpeg_encoder_select="aandcttables mpegvideoenc"
2073 loco_decoder_select="golomb"
2074 mdec_decoder_select="dsputil error_resilience mpegvideo"
2075 metasound_decoder_select="lsp mdct sinewin"
2076 mimic_decoder_select="dsputil hpeldsp"
2077 mjpeg_decoder_select="dsputil hpeldsp exif"
2078 mjpeg_encoder_select="aandcttables mpegvideoenc"
2079 mjpegb_decoder_select="mjpeg_decoder"
2080 mlp_decoder_select="mlp_parser"
2081 motionpixels_decoder_select="dsputil"
2082 mp1_decoder_select="mpegaudio"
2083 mp1float_decoder_select="mpegaudio"
2084 mp2_decoder_select="mpegaudio"
2085 mp2float_decoder_select="mpegaudio"
2086 mp3_decoder_select="mpegaudio"
2087 mp3adu_decoder_select="mpegaudio"
2088 mp3adufloat_decoder_select="mpegaudio"
2089 mp3float_decoder_select="mpegaudio"
2090 mp3on4_decoder_select="mpegaudio"
2091 mp3on4float_decoder_select="mpegaudio"
2092 mpc7_decoder_select="dsputil mpegaudiodsp"
2093 mpc8_decoder_select="mpegaudiodsp"
2094 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2095 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2096 mpeg1video_decoder_select="error_resilience mpegvideo"
2097 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2098 mpeg2video_decoder_select="error_resilience mpegvideo"
2099 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2100 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2101 mpeg4_encoder_select="h263_encoder"
2102 msmpeg4v1_decoder_select="h263_decoder"
2103 msmpeg4v2_decoder_select="h263_decoder"
2104 msmpeg4v2_encoder_select="h263_encoder"
2105 msmpeg4v3_decoder_select="h263_decoder"
2106 msmpeg4v3_encoder_select="h263_encoder"
2107 mss2_decoder_select="error_resilience vc1_decoder"
2108 mxpeg_decoder_select="mjpeg_decoder"
2109 nellymoser_decoder_select="mdct sinewin"
2110 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2111 nuv_decoder_select="dsputil lzo"
2112 on2avc_decoder_select="mdct"
2113 opus_decoder_deps="swresample"
2114 png_decoder_select="zlib"
2115 png_encoder_select="dsputil zlib"
2116 prores_decoder_select="dsputil"
2117 prores_encoder_select="dsputil"
2118 qcelp_decoder_select="lsp"
2119 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2120 ra_144_encoder_select="audio_frame_queue lpc"
2121 ralf_decoder_select="golomb"
2122 rawvideo_decoder_select="dsputil"
2123 rtjpeg_decoder_select="dsputil"
2124 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2125 rv10_encoder_select="h263_encoder"
2126 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2127 rv20_encoder_select="h263_encoder"
2128 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2129 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2130 shorten_decoder_select="golomb"
2131 sipr_decoder_select="lsp"
2132 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2133 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2134 sonic_decoder_select="golomb rangecoder"
2135 sonic_encoder_select="golomb rangecoder"
2136 sonic_ls_encoder_select="golomb rangecoder"
2137 sp5x_decoder_select="mjpeg_decoder"
2138 svq1_decoder_select="hpeldsp"
2139 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2140 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2141 svq3_decoder_suggest="zlib"
2142 tak_decoder_select="dsputil"
2143 theora_decoder_select="vp3_decoder"
2144 thp_decoder_select="mjpeg_decoder"
2145 tiff_decoder_suggest="zlib"
2146 tiff_encoder_suggest="zlib"
2147 truehd_decoder_select="mlp_parser"
2148 truemotion2_decoder_select="dsputil"
2149 truespeech_decoder_select="dsputil"
2150 tscc_decoder_select="zlib"
2151 twinvq_decoder_select="mdct lsp sinewin"
2152 utvideo_decoder_select="dsputil"
2153 utvideo_encoder_select="dsputil huffman"
2154 vble_decoder_select="dsputil"
2155 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2156 vc1image_decoder_select="vc1_decoder"
2157 vorbis_decoder_select="mdct"
2158 vorbis_encoder_select="mdct"
2159 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2160 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2161 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2162 vp6a_decoder_select="vp6_decoder"
2163 vp6f_decoder_select="vp6_decoder"
2164 vp7_decoder_select="h264pred videodsp"
2165 vp8_decoder_select="h264pred videodsp"
2166 vp9_decoder_select="videodsp vp9_parser"
2167 webp_decoder_select="vp8_decoder"
2168 wmapro_decoder_select="mdct sinewin"
2169 wmav1_decoder_select="mdct sinewin"
2170 wmav1_encoder_select="mdct sinewin"
2171 wmav2_decoder_select="mdct sinewin"
2172 wmav2_encoder_select="mdct sinewin"
2173 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2174 wmv1_decoder_select="h263_decoder"
2175 wmv1_encoder_select="h263_encoder"
2176 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2177 wmv2_encoder_select="h263_encoder"
2178 wmv3_decoder_select="vc1_decoder"
2179 wmv3image_decoder_select="wmv3_decoder"
2180 zerocodec_decoder_select="zlib"
2181 zlib_decoder_select="zlib"
2182 zlib_encoder_select="zlib"
2183 zmbv_decoder_select="zlib"
2184 zmbv_encoder_select="zlib"
2185
2186 # hardware accelerators
2187 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2188 dxva2_deps="dxva2api_h"
2189 vaapi_deps="va_va_h"
2190 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2191 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2192 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2193 xvmc_deps="X11_extensions_XvMClib_h"
2194
2195 h263_vaapi_hwaccel_deps="vaapi"
2196 h263_vaapi_hwaccel_select="h263_decoder"
2197 h263_vdpau_hwaccel_deps="vdpau"
2198 h263_vdpau_hwaccel_select="h263_decoder"
2199 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2200 h264_dxva2_hwaccel_deps="dxva2"
2201 h264_dxva2_hwaccel_select="h264_decoder"
2202 h264_vaapi_hwaccel_deps="vaapi"
2203 h264_vaapi_hwaccel_select="h264_decoder"
2204 h264_vda_decoder_deps="vda"
2205 h264_vda_decoder_select="h264_decoder"
2206 h264_vda_hwaccel_deps="vda"
2207 h264_vda_hwaccel_select="h264_decoder"
2208 h264_vda_old_hwaccel_deps="vda"
2209 h264_vda_old_hwaccel_select="h264_decoder"
2210 h264_vdpau_decoder_deps="vdpau"
2211 h264_vdpau_decoder_select="h264_decoder"
2212 h264_vdpau_hwaccel_deps="vdpau"
2213 h264_vdpau_hwaccel_select="h264_decoder"
2214 mpeg_vdpau_decoder_deps="vdpau"
2215 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2216 mpeg_xvmc_hwaccel_deps="xvmc"
2217 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2218 mpeg1_vdpau_decoder_deps="vdpau"
2219 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2220 mpeg1_vdpau_hwaccel_deps="vdpau"
2221 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2222 mpeg1_xvmc_hwaccel_deps="xvmc"
2223 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2224 mpeg2_crystalhd_decoder_select="crystalhd"
2225 mpeg2_dxva2_hwaccel_deps="dxva2"
2226 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2227 mpeg2_vaapi_hwaccel_deps="vaapi"
2228 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2229 mpeg2_vdpau_hwaccel_deps="vdpau"
2230 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2231 mpeg2_xvmc_hwaccel_deps="xvmc"
2232 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2233 mpeg4_crystalhd_decoder_select="crystalhd"
2234 mpeg4_vaapi_hwaccel_deps="vaapi"
2235 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2236 mpeg4_vdpau_decoder_deps="vdpau"
2237 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2238 mpeg4_vdpau_hwaccel_deps="vdpau"
2239 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2240 msmpeg4_crystalhd_decoder_select="crystalhd"
2241 vc1_crystalhd_decoder_select="crystalhd"
2242 vc1_dxva2_hwaccel_deps="dxva2"
2243 vc1_dxva2_hwaccel_select="vc1_decoder"
2244 vc1_vaapi_hwaccel_deps="vaapi"
2245 vc1_vaapi_hwaccel_select="vc1_decoder"
2246 vc1_vdpau_decoder_deps="vdpau"
2247 vc1_vdpau_decoder_select="vc1_decoder"
2248 vc1_vdpau_hwaccel_deps="vdpau"
2249 vc1_vdpau_hwaccel_select="vc1_decoder"
2250 wmv3_crystalhd_decoder_select="crystalhd"
2251 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2252 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2253 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2254 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2255
2256 # parsers
2257 h264_parser_select="h264_decoder"
2258 hevc_parser_select="hevc_decoder"
2259 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2260 mpegvideo_parser_select="error_resilience mpegvideo"
2261 vc1_parser_select="mpegvideo"
2262
2263 # external libraries
2264 libaacplus_encoder_deps="libaacplus"
2265 libcelt_decoder_deps="libcelt"
2266 libfaac_encoder_deps="libfaac"
2267 libfaac_encoder_select="audio_frame_queue"
2268 libfdk_aac_decoder_deps="libfdk_aac"
2269 libfdk_aac_encoder_deps="libfdk_aac"
2270 libfdk_aac_encoder_select="audio_frame_queue"
2271 libgme_demuxer_deps="libgme"
2272 libgsm_decoder_deps="libgsm"
2273 libgsm_encoder_deps="libgsm"
2274 libgsm_ms_decoder_deps="libgsm"
2275 libgsm_ms_encoder_deps="libgsm"
2276 libilbc_decoder_deps="libilbc"
2277 libilbc_encoder_deps="libilbc"
2278 libmodplug_demuxer_deps="libmodplug"
2279 libmp3lame_encoder_deps="libmp3lame"
2280 libmp3lame_encoder_select="audio_frame_queue"
2281 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2282 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2283 libopencore_amrnb_encoder_select="audio_frame_queue"
2284 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2285 libopenjpeg_decoder_deps="libopenjpeg"
2286 libopenjpeg_encoder_deps="libopenjpeg"
2287 libopus_decoder_deps="libopus"
2288 libopus_encoder_deps="libopus"
2289 libopus_encoder_select="audio_frame_queue"
2290 libquvi_demuxer_deps="libquvi"
2291 libschroedinger_decoder_deps="libschroedinger"
2292 libschroedinger_encoder_deps="libschroedinger"
2293 libshine_encoder_deps="libshine"
2294 libshine_encoder_select="audio_frame_queue"
2295 libspeex_decoder_deps="libspeex"
2296 libspeex_encoder_deps="libspeex"
2297 libspeex_encoder_select="audio_frame_queue"
2298 libstagefright_h264_decoder_deps="libstagefright_h264"
2299 libtheora_encoder_deps="libtheora"
2300 libtwolame_encoder_deps="libtwolame"
2301 libvo_aacenc_encoder_deps="libvo_aacenc"
2302 libvo_aacenc_encoder_select="audio_frame_queue"
2303 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2304 libvorbis_decoder_deps="libvorbis"
2305 libvorbis_encoder_deps="libvorbis"
2306 libvorbis_encoder_select="audio_frame_queue"
2307 libvpx_vp8_decoder_deps="libvpx"
2308 libvpx_vp8_encoder_deps="libvpx"
2309 libvpx_vp9_decoder_deps="libvpx"
2310 libvpx_vp9_encoder_deps="libvpx"
2311 libwavpack_encoder_deps="libwavpack"
2312 libwebp_encoder_deps="libwebp"
2313 libx264_encoder_deps="libx264"
2314 libx264rgb_encoder_deps="libx264"
2315 libx265_encoder_deps="libx265"
2316 libxavs_encoder_deps="libxavs"
2317 libxvid_encoder_deps="libxvid"
2318 libutvideo_decoder_deps="libutvideo"
2319 libutvideo_encoder_deps="libutvideo"
2320 libzvbi_teletext_decoder_deps="libzvbi"
2321
2322 # demuxers / muxers
2323 ac3_demuxer_select="ac3_parser"
2324 asf_demuxer_select="riffdec"
2325 asf_muxer_select="riffenc"
2326 asf_stream_muxer_select="asf_muxer"
2327 avi_demuxer_select="riffdec exif"
2328 avi_muxer_select="riffenc"
2329 avisynth_demuxer_deps="avisynth"
2330 avisynth_demuxer_select="riffdec"
2331 caf_demuxer_select="riffdec"
2332 dirac_demuxer_select="dirac_parser"
2333 dts_demuxer_select="dca_parser"
2334 dtshd_demuxer_select="dca_parser"
2335 dxa_demuxer_select="riffdec"
2336 eac3_demuxer_select="ac3_parser"
2337 f4v_muxer_select="mov_muxer"
2338 flac_demuxer_select="flac_parser"
2339 hds_muxer_select="flv_muxer"
2340 hls_muxer_select="mpegts_muxer"
2341 image2_alias_pix_demuxer_select="image2_demuxer"
2342 image2_brender_pix_demuxer_select="image2_demuxer"
2343 ipod_muxer_select="mov_muxer"
2344 ismv_muxer_select="mov_muxer"
2345 libnut_demuxer_deps="libnut"
2346 libnut_muxer_deps="libnut"
2347 matroska_audio_muxer_select="matroska_muxer"
2348 matroska_demuxer_select="riffdec"
2349 matroska_demuxer_suggest="bzlib lzo zlib"
2350 matroska_muxer_select="riffenc"
2351 mmf_muxer_select="riffenc"
2352 mov_demuxer_select="riffdec"
2353 mov_demuxer_suggest="zlib"
2354 mov_muxer_select="riffenc rtpenc_chain"
2355 mp3_demuxer_select="mpegaudio_parser"
2356 mp4_muxer_select="mov_muxer"
2357 mpegts_muxer_select="adts_muxer latm_muxer"
2358 mpegtsraw_demuxer_select="mpegts_demuxer"
2359 mxf_d10_muxer_select="mxf_muxer"
2360 nut_muxer_select="riffenc"
2361 nuv_demuxer_select="riffdec"
2362 ogg_demuxer_select="golomb"
2363 psp_muxer_select="mov_muxer"
2364 rtp_demuxer_select="sdp_demuxer"
2365 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2366 rtsp_demuxer_select="http_protocol rtpdec"
2367 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2368 sap_demuxer_select="sdp_demuxer"
2369 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2370 sdp_demuxer_select="rtpdec"
2371 smoothstreaming_muxer_select="ismv_muxer"
2372 spdif_muxer_select="aac_parser"
2373 tak_demuxer_select="tak_parser"
2374 tg2_muxer_select="mov_muxer"
2375 tgp_muxer_select="mov_muxer"
2376 vobsub_demuxer_select="mpegps_demuxer"
2377 w64_demuxer_select="wav_demuxer"
2378 w64_muxer_select="wav_muxer"
2379 wav_demuxer_select="riffdec"
2380 wav_muxer_select="riffenc"
2381 webm_muxer_select="riffenc"
2382 wtv_demuxer_select="riffdec"
2383 wtv_muxer_select="riffenc"
2384 xmv_demuxer_select="riffdec"
2385 xwma_demuxer_select="riffdec"
2386
2387 # indevs / outdevs
2388 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2389 alsa_outdev_deps="alsa_asoundlib_h"
2390 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2391 avfoundation_indev_select="avfoundation"
2392 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2393 caca_outdev_deps="libcaca"
2394 decklink_outdev_deps="decklink pthreads"
2395 decklink_outdev_extralibs="-lstdc++"
2396 dshow_indev_deps="IBaseFilter"
2397 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2398 dv1394_indev_deps="dv1394"
2399 dv1394_indev_select="dv_demuxer"
2400 fbdev_indev_deps="linux_fb_h"
2401 fbdev_outdev_deps="linux_fb_h"
2402 gdigrab_indev_deps="CreateDIBSection"
2403 gdigrab_indev_extralibs="-lgdi32"
2404 gdigrab_indev_select="bmp_decoder"
2405 iec61883_indev_deps="libiec61883"
2406 jack_indev_deps="jack_jack_h sem_timedwait"
2407 lavfi_indev_deps="avfilter"
2408 libcdio_indev_deps="libcdio"
2409 libdc1394_indev_deps="libdc1394"
2410 libv4l2_indev_deps="libv4l2"
2411 openal_indev_deps="openal"
2412 opengl_outdev_deps="opengl"
2413 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2414 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2415 pulse_indev_deps="libpulse"
2416 pulse_outdev_deps="libpulse"
2417 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2418 qtkit_indev_select="qtkit"
2419 sdl_outdev_deps="sdl"
2420 sndio_indev_deps="sndio_h"
2421 sndio_outdev_deps="sndio_h"
2422 v4l_indev_deps="linux_videodev_h"
2423 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2424 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2425 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2426 vfwcap_indev_extralibs="-lavicap32"
2427 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2428 xv_outdev_extralibs="-lXv -lX11 -lXext"
2429 x11grab_indev_deps="x11grab"
2430
2431 # protocols
2432 bluray_protocol_deps="libbluray"
2433 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2434 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2435 ffrtmpcrypt_protocol_select="tcp_protocol"
2436 ffrtmphttp_protocol_deps="!librtmp_protocol"
2437 ffrtmphttp_protocol_select="http_protocol"
2438 ftp_protocol_select="tcp_protocol"
2439 gopher_protocol_select="network"
2440 http_protocol_select="tcp_protocol"
2441 httpproxy_protocol_select="tcp_protocol"
2442 https_protocol_select="tls_protocol"
2443 librtmp_protocol_deps="librtmp"
2444 librtmpe_protocol_deps="librtmp"
2445 librtmps_protocol_deps="librtmp"
2446 librtmpt_protocol_deps="librtmp"
2447 librtmpte_protocol_deps="librtmp"
2448 libssh_protocol_deps="libssh"
2449 mmsh_protocol_select="http_protocol"
2450 mmst_protocol_select="network"
2451 rtmp_protocol_deps="!librtmp_protocol"
2452 rtmp_protocol_select="tcp_protocol"
2453 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2454 rtmps_protocol_deps="!librtmp_protocol"
2455 rtmps_protocol_select="tls_protocol"
2456 rtmpt_protocol_select="ffrtmphttp_protocol"
2457 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2458 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2459 rtp_protocol_select="udp_protocol"
2460 sctp_protocol_deps="struct_sctp_event_subscribe"
2461 sctp_protocol_select="network"
2462 srtp_protocol_select="rtp_protocol"
2463 tcp_protocol_select="network"
2464 tls_protocol_deps_any="openssl gnutls"
2465 tls_protocol_select="tcp_protocol"
2466 udp_protocol_select="network"
2467 unix_protocol_deps="sys_un_h"
2468 unix_protocol_select="network"
2469
2470 # filters
2471 aconvert_filter_deps="swresample"
2472 amovie_filter_deps="avcodec avformat"
2473 aresample_filter_deps="swresample"
2474 ass_filter_deps="libass"
2475 asyncts_filter_deps="avresample"
2476 atempo_filter_deps="avcodec"
2477 atempo_filter_select="rdft"
2478 azmq_filter_deps="libzmq"
2479 blackframe_filter_deps="gpl"
2480 boxblur_filter_deps="gpl"
2481 bs2b_filter_deps="libbs2b"
2482 colormatrix_filter_deps="gpl"
2483 cropdetect_filter_deps="gpl"
2484 dctdnoiz_filter_deps="avcodec"
2485 dctdnoiz_filter_select="dct"
2486 delogo_filter_deps="gpl"
2487 deshake_filter_deps="avcodec"
2488 deshake_filter_select="dsputil"
2489 drawtext_filter_deps="libfreetype"
2490 ebur128_filter_deps="gpl"
2491 flite_filter_deps="libflite"
2492 frei0r_filter_deps="frei0r dlopen"
2493 frei0r_filter_extralibs='$ldl'
2494 frei0r_src_filter_deps="frei0r dlopen"
2495 frei0r_src_filter_extralibs='$ldl'
2496 geq_filter_deps="gpl"
2497 histeq_filter_deps="gpl"
2498 hqdn3d_filter_deps="gpl"
2499 interlace_filter_deps="gpl"
2500 kerndeint_filter_deps="gpl"
2501 ladspa_filter_deps="ladspa dlopen"
2502 ladspa_filter_extralibs='$ldl'
2503 mcdeint_filter_deps="avcodec gpl"
2504 movie_filter_deps="avcodec avformat"
2505 mp_filter_deps="gpl avcodec swscale inline_asm"
2506 mpdecimate_filter_deps="gpl avcodec"
2507 mptestsrc_filter_deps="gpl"
2508 negate_filter_deps="lut_filter"
2509 perspective_filter_deps="gpl"
2510 ocv_filter_deps="libopencv"
2511 owdenoise_filter_deps="gpl"
2512 pan_filter_deps="swresample"
2513 phase_filter_deps="gpl"
2514 pp_filter_deps="gpl postproc"
2515 pullup_filter_deps="gpl"
2516 removelogo_filter_deps="avcodec avformat swscale"
2517 resample_filter_deps="avresample"
2518 sab_filter_deps="gpl swscale"
2519 scale_filter_deps="swscale"
2520 smartblur_filter_deps="gpl swscale"
2521 showspectrum_filter_deps="avcodec"
2522 showspectrum_filter_select="rdft"
2523 spp_filter_deps="gpl avcodec"
2524 spp_filter_select="fft"
2525 stereo3d_filter_deps="gpl"
2526 subtitles_filter_deps="avformat avcodec libass"
2527 super2xsai_filter_deps="gpl"
2528 tinterlace_filter_deps="gpl"
2529 vidstabdetect_filter_deps="libvidstab"
2530 vidstabtransform_filter_deps="libvidstab"
2531 pixfmts_super2xsai_test_deps="super2xsai_filter"
2532 tinterlace_merge_test_deps="tinterlace_filter"
2533 tinterlace_pad_test_deps="tinterlace_filter"
2534 zmq_filter_deps="libzmq"
2535
2536 # examples
2537 avio_reading="avformat avcodec avutil"
2538 avcodec_example_deps="avcodec avutil"
2539 demuxing_decoding_example_deps="avcodec avformat avutil"
2540 filter_audio_example_deps="avfilter avutil"
2541 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2542 filtering_video_example_deps="avfilter avcodec avformat avutil"
2543 metadata_example_deps="avformat avutil"
2544 muxing_example_deps="avcodec avformat avutil swscale"
2545 remuxing_example_deps="avcodec avformat avutil"
2546 resampling_audio_example_deps="avutil swresample"
2547 scaling_video_example_deps="avutil swscale"
2548 transcode_aac_example_deps="avcodec avformat swresample"
2549 transcoding_example_deps="avfilter avcodec avformat avutil"
2550
2551 # libraries, in linking order
2552 avcodec_deps="avutil"
2553 avdevice_deps="avformat avcodec avutil"
2554 avfilter_deps="avutil"
2555 avformat_deps="avcodec avutil"
2556 avresample_deps="avutil"
2557 postproc_deps="avutil gpl"
2558 swresample_deps="avutil"
2559 swscale_deps="avutil"
2560
2561 # programs
2562 ffmpeg_deps="avcodec avfilter avformat swresample"
2563 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2564                null_filter
2565                setpts_filter trim_filter"
2566 ffplay_deps="avcodec avformat swscale swresample sdl"
2567 ffplay_libs='$sdl_libs'
2568 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2569 ffprobe_deps="avcodec avformat"
2570 ffserver_deps="avformat fork sarestart"
2571 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2572
2573 # documentation
2574 podpages_deps="perl"
2575 manpages_deps="perl pod2man"
2576 htmlpages_deps="perl texi2html"
2577 txtpages_deps="perl makeinfo"
2578 doc_deps_any="manpages htmlpages podpages txtpages"
2579
2580 # default parameters
2581
2582 logfile="config.log"
2583
2584 # installation paths
2585 prefix_default="/usr/local"
2586 bindir_default='${prefix}/bin'
2587 datadir_default='${prefix}/share/ffmpeg'
2588 docdir_default='${prefix}/share/doc/ffmpeg'
2589 incdir_default='${prefix}/include'
2590 libdir_default='${prefix}/lib'
2591 mandir_default='${prefix}/share/man'
2592 shlibdir_default="$libdir_default"
2593
2594 # toolchain
2595 ar_default="ar"
2596 cc_default="gcc"
2597 cxx_default="g++"
2598 host_cc_default="gcc"
2599 cp_f="cp -f"
2600 install="install"
2601 ln_s="ln -s -f"
2602 nm_default="nm -g"
2603 objformat="elf"
2604 pkg_config_default=pkg-config
2605 ranlib_default="ranlib"
2606 strip_default="strip"
2607 yasmexe_default="yasm"
2608 windres_default="windres"
2609
2610 nogas=":"
2611
2612 # OS
2613 target_os_default=$(tolower $(uname -s))
2614 host_os=$target_os_default
2615
2616 # machine
2617 if test "$target_os_default" = aix; then
2618     arch_default=$(uname -p)
2619 else
2620     arch_default=$(uname -m)
2621 fi
2622 cpu="generic"
2623
2624 # configurable options
2625 enable $PROGRAM_LIST
2626 enable $DOCUMENT_LIST
2627 enable $EXAMPLE_LIST
2628 enable $(filter_out avresample $LIBRARY_LIST)
2629 enable stripping
2630
2631 enable asm
2632 enable debug
2633 enable doc
2634 enable optimizations
2635 enable runtime_cpudetect
2636 enable safe_bitstream_reader
2637 enable static
2638 enable swscale_alpha
2639
2640 # Enable hwaccels by default.
2641 enable dxva2 vaapi vda vdpau xvmc
2642 enable xlib
2643
2644 # build settings
2645 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2646 LIBPREF="lib"
2647 LIBSUF=".a"
2648 FULLNAME='$(NAME)$(BUILDSUF)'
2649 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2650 SLIBPREF="lib"
2651 SLIBSUF=".so"
2652 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2653 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2654 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2655 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2656 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2657 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2658
2659 asflags_filter=echo
2660 cflags_filter=echo
2661 ldflags_filter=echo
2662
2663 AS_C='-c'
2664 AS_O='-o $@'
2665 CC_C='-c'
2666 CC_E='-E -o $@'
2667 CC_O='-o $@'
2668 CXX_C='-c'
2669 CXX_O='-o $@'
2670 LD_O='-o $@'
2671 LD_LIB='-l%'
2672 LD_PATH='-L'
2673 HOSTCC_C='-c'
2674 HOSTCC_E='-E -o $@'
2675 HOSTCC_O='-o $@'
2676 HOSTLD_O='-o $@'
2677
2678 host_libs='-lm'
2679 host_cflags_filter=echo
2680 host_ldflags_filter=echo
2681
2682 target_path='$(CURDIR)'
2683
2684 # since the object filename is not given with the -MM flag, the compiler
2685 # is only able to print the basename, and we must add the path ourselves
2686 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2687 DEPFLAGS='-MM'
2688
2689 # find source path
2690 if test -f configure; then
2691     source_path=.
2692 else
2693     source_path=$(cd $(dirname "$0"); pwd)
2694     echo "$source_path" | grep -q '[[:blank:]]' &&
2695         die "Out of tree builds are impossible with whitespace in source path."
2696     test -e "$source_path/config.h" &&
2697         die "Out of tree builds are impossible with config.h in source dir."
2698 fi
2699
2700 for v in "$@"; do
2701     r=${v#*=}
2702     l=${v%"$r"}
2703     r=$(sh_quote "$r")
2704     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2705 done
2706
2707 find_things(){
2708     thing=$1
2709     pattern=$2
2710     file=$source_path/$3
2711     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2712 }
2713
2714 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2715 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2716 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2717 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2718 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2719 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2720 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2721 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2722 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2723 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2724 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2725
2726 ALL_COMPONENTS="
2727     $BSF_LIST
2728     $DECODER_LIST
2729     $DEMUXER_LIST
2730     $ENCODER_LIST
2731     $FILTER_LIST
2732     $HWACCEL_LIST
2733     $INDEV_LIST
2734     $MUXER_LIST
2735     $OUTDEV_LIST
2736     $PARSER_LIST
2737     $PROTOCOL_LIST
2738 "
2739
2740 for n in $COMPONENT_LIST; do
2741     v=$(toupper ${n%s})_LIST
2742     eval enable \$$v
2743     eval ${n}_if_any="\$$v"
2744 done
2745
2746 enable $ARCH_EXT_LIST
2747
2748 die_unknown(){
2749     echo "Unknown option \"$1\"."
2750     echo "See $0 --help for available options."
2751     exit 1
2752 }
2753
2754 print_3_columns() {
2755     cat | tr ' ' '\n' | sort | pr -r -3 -t
2756 }
2757
2758 show_list() {
2759     suffix=_$1
2760     shift
2761     echo $* | sed s/$suffix//g | print_3_columns
2762     exit 0
2763 }
2764
2765 rand_list(){
2766     IFS=', '
2767     set -- $*
2768     unset IFS
2769     for thing; do
2770         comp=${thing%:*}
2771         prob=${thing#$comp}
2772         prob=${prob#:}
2773         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2774         echo "prob ${prob:-0.5}"
2775         printf '%s\n' $comp
2776     done
2777 }
2778
2779 do_random(){
2780     action=$1
2781     shift
2782     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2783     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2784 }
2785
2786 for opt do
2787     optval="${opt#*=}"
2788     case "$opt" in
2789         --extra-ldflags=*)
2790             add_ldflags $optval
2791         ;;
2792         --extra-libs=*)
2793             add_extralibs $optval
2794         ;;
2795         --disable-devices)
2796             disable $INDEV_LIST $OUTDEV_LIST
2797         ;;
2798         --enable-debug=*)
2799             debuglevel="$optval"
2800         ;;
2801         --disable-programs)
2802             disable $PROGRAM_LIST
2803         ;;
2804         --disable-everything)
2805             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2806         ;;
2807         --disable-all)
2808             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2809             disable $LIBRARY_LIST $PROGRAM_LIST doc
2810         ;;
2811         --enable-random|--disable-random)
2812             action=${opt%%-random}
2813             do_random ${action#--} $COMPONENT_LIST
2814         ;;
2815         --enable-random=*|--disable-random=*)
2816             action=${opt%%-random=*}
2817             do_random ${action#--} $optval
2818         ;;
2819         --enable-*=*|--disable-*=*)
2820             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2821             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2822             eval list=\$$(toupper $thing)_LIST
2823             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2824             list=$(filter "$name" $list)
2825             [ "$list" = "" ] && warn "Option $opt did not match anything"
2826             $action $list
2827         ;;
2828         --enable-?*|--disable-?*)
2829             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2830             if is_in $option $COMPONENT_LIST; then
2831                 test $action = disable && action=unset
2832                 eval $action \$$(toupper ${option%s})_LIST
2833             elif is_in $option $CMDLINE_SELECT; then
2834                 $action $option
2835             else
2836                 die_unknown $opt
2837             fi
2838         ;;
2839         --list-*)
2840             NAME="${opt#--list-}"
2841             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2842             NAME=${NAME%s}
2843             eval show_list $NAME \$$(toupper $NAME)_LIST
2844         ;;
2845         --help|-h) show_help
2846         ;;
2847         --fatal-warnings) enable fatal_warnings
2848         ;;
2849         *)
2850             optname="${opt%%=*}"
2851             optname="${optname#--}"
2852             optname=$(echo "$optname" | sed 's/-/_/g')
2853             if is_in $optname $CMDLINE_SET; then
2854                 eval $optname='$optval'
2855             elif is_in $optname $CMDLINE_APPEND; then
2856                 append $optname "$optval"
2857             else
2858                 die_unknown $opt
2859             fi
2860         ;;
2861     esac
2862 done
2863
2864 disabled logging && logfile=/dev/null
2865
2866 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2867 set >> $logfile
2868
2869 test -n "$cross_prefix" && enable cross_compile
2870
2871 if enabled cross_compile; then
2872     test -n "$arch" && test -n "$target_os" ||
2873         die "Must specify target arch and OS when cross-compiling"
2874 fi
2875
2876 ar_default="${cross_prefix}${ar_default}"
2877 cc_default="${cross_prefix}${cc_default}"
2878 cxx_default="${cross_prefix}${cxx_default}"
2879 nm_default="${cross_prefix}${nm_default}"
2880 pkg_config_default="${cross_prefix}${pkg_config_default}"
2881 ranlib_default="${cross_prefix}${ranlib_default}"
2882 strip_default="${cross_prefix}${strip_default}"
2883 windres_default="${cross_prefix}${windres_default}"
2884
2885 sysinclude_default="${sysroot}/usr/include"
2886
2887 test -n "$valgrind" && toolchain="valgrind-memcheck"
2888
2889 case "$toolchain" in
2890     clang-asan)
2891         cc_default="clang"
2892         add_cflags  -fsanitize=address
2893         add_ldflags -fsanitize=address
2894     ;;
2895     clang-tsan)
2896         cc_default="clang"
2897         add_cflags  -fsanitize=thread -pie
2898         add_ldflags -fsanitize=thread -pie
2899     ;;
2900     clang-usan)
2901         cc_default="clang"
2902         add_cflags  -fsanitize=undefined
2903         add_ldflags -fsanitize=undefined
2904     ;;
2905     gcc-asan)
2906         cc_default="gcc"
2907         add_cflags  -fsanitize=address
2908         add_ldflags -fsanitize=address
2909     ;;
2910     gcc-tsan)
2911         cc_default="gcc"
2912         add_cflags  -fsanitize=thread -pie -fPIC
2913         add_ldflags -fsanitize=thread -pie -fPIC
2914     ;;
2915     gcc-usan)
2916         cc_default="gcc"
2917         add_cflags  -fsanitize=undefined
2918         add_ldflags -fsanitize=undefined
2919     ;;
2920     valgrind-massif)
2921         target_exec_default=${valgrind:-"valgrind"}
2922         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"
2923     ;;
2924     valgrind-memcheck)
2925         target_exec_default=${valgrind:-"valgrind"}
2926         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2927     ;;
2928     msvc)
2929         # Check whether the current MSVC version needs the C99 converter.
2930         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2931         # support enough of C99 to build ffmpeg. Default to the new
2932         # behaviour if the regexp was unable to match anything, since this
2933         # successfully parses the version number of existing supported
2934         # versions that require the converter (MSVC 2010 and 2012).
2935         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2936         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2937             cc_default="cl"
2938         else
2939             cc_default="c99wrap cl"
2940         fi
2941         ld_default="link"
2942         nm_default="dumpbin -symbols"
2943         ar_default="lib"
2944         target_os_default="win32"
2945         # Use a relative path for TMPDIR. This makes sure all the
2946         # ffconf temp files are written with a relative path, avoiding
2947         # issues with msys/win32 path conversion for MSVC parameters
2948         # such as -Fo<file> or -out:<file>.
2949         TMPDIR=.
2950     ;;
2951     icl)
2952         cc_default="icl"
2953         ld_default="xilink"
2954         nm_default="dumpbin -symbols"
2955         ar_default="xilib"
2956         target_os_default="win32"
2957         TMPDIR=.
2958     ;;
2959     gcov)
2960         add_cflags  -fprofile-arcs -ftest-coverage
2961         add_ldflags -fprofile-arcs -ftest-coverage
2962     ;;
2963     hardened)
2964         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2965         add_ldflags -Wl,-z,relro -Wl,-z,now
2966     ;;
2967     ?*)
2968         die "Unknown toolchain $toolchain"
2969     ;;
2970 esac
2971
2972 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2973 enabled cross_compile || host_cc_default=$cc
2974 set_default host_cc
2975
2976 if ! $pkg_config --version >/dev/null 2>&1; then
2977     warn "$pkg_config not found, library detection may fail."
2978     pkg_config=false
2979 fi
2980
2981 exesuf() {
2982     case $1 in
2983         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2984     esac
2985 }
2986
2987 EXESUF=$(exesuf $target_os)
2988 HOSTEXESUF=$(exesuf $host_os)
2989
2990 # set temporary file name
2991 : ${TMPDIR:=$TEMPDIR}
2992 : ${TMPDIR:=$TMP}
2993 : ${TMPDIR:=/tmp}
2994
2995 if [ -n "$tempprefix" ] ; then
2996     mktemp(){
2997         echo $tempprefix.${HOSTNAME}.${UID}
2998     }
2999 elif ! check_cmd mktemp -u XXXXXX; then
3000     # simple replacement for missing mktemp
3001     # NOT SAFE FOR GENERAL USE
3002     mktemp(){
3003         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3004     }
3005 fi
3006
3007 tmpfile(){
3008     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3009         (set -C; exec > $tmp) 2>/dev/null ||
3010         die "Unable to create temporary file in $TMPDIR."
3011     append TMPFILES $tmp
3012     eval $1=$tmp
3013 }
3014
3015 trap 'rm -f -- $TMPFILES' EXIT
3016
3017 tmpfile TMPASM .asm
3018 tmpfile TMPC   .c
3019 tmpfile TMPCPP .cpp
3020 tmpfile TMPE   $EXESUF
3021 tmpfile TMPH   .h
3022 tmpfile TMPM   .m
3023 tmpfile TMPO   .o
3024 tmpfile TMPS   .S
3025 tmpfile TMPSH  .sh
3026 tmpfile TMPV   .ver
3027
3028 unset -f mktemp
3029
3030 chmod +x $TMPE
3031
3032 # make sure we can execute files in $TMPDIR
3033 cat > $TMPSH 2>> $logfile <<EOF
3034 #! /bin/sh
3035 EOF
3036 chmod +x $TMPSH >> $logfile 2>&1
3037 if ! $TMPSH >> $logfile 2>&1; then
3038     cat <<EOF
3039 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3040 variable to another directory and make sure that it is not mounted noexec.
3041 EOF
3042     die "Sanity test failed."
3043 fi
3044
3045 ccc_flags(){
3046     for flag; do
3047         case $flag in
3048             -std=c99)           echo -c99                       ;;
3049             -mcpu=*)            echo -arch ${flag#*=}           ;;
3050             -mieee)             echo -ieee                      ;;
3051             -O*|-fast)          echo $flag                      ;;
3052             -fno-math-errno)    echo -assume nomath_errno       ;;
3053             -g)                 echo -g3                        ;;
3054             -Wall)              echo -msg_enable level2         ;;
3055             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3056             -Wl,*)              echo $flag                      ;;
3057             -f*|-W*)                                            ;;
3058             *)                  echo $flag                      ;;
3059         esac
3060    done
3061 }
3062
3063 cparser_flags(){
3064     for flag; do
3065         case $flag in
3066             -Wno-switch)             echo -Wno-switch-enum ;;
3067             -Wno-format-zero-length) ;;
3068             -Wdisabled-optimization) ;;
3069             -Wno-pointer-sign)       echo -Wno-other ;;
3070             *)                       echo $flag ;;
3071         esac
3072     done
3073 }
3074
3075 msvc_common_flags(){
3076     for flag; do
3077         case $flag in
3078             # In addition to specifying certain flags under the compiler
3079             # specific filters, they must be specified here as well or else the
3080             # generic catch all at the bottom will print the original flag.
3081             -Wall)                ;;
3082             -std=c99)             ;;
3083             # Common flags
3084             -fomit-frame-pointer) ;;
3085             -g)                   echo -Z7 ;;
3086             -fno-math-errno)      ;;
3087             -fno-common)          ;;
3088             -fno-signed-zeros)    ;;
3089             -fPIC)                ;;
3090             -mthumb)              ;;
3091             -march=*)             ;;
3092             -lz)                  echo zlib.lib ;;
3093             -lavifil32)           echo vfw32.lib ;;
3094             -lavicap32)           echo vfw32.lib user32.lib ;;
3095             -l*)                  echo ${flag#-l}.lib ;;
3096             *)                    echo $flag ;;
3097         esac
3098     done
3099 }
3100
3101 msvc_flags(){
3102     msvc_common_flags "$@"
3103     for flag; do
3104         case $flag in
3105             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3106                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3107                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3108                                        -wd4554 \
3109                                        -wd4273 ;;
3110         esac
3111     done
3112 }
3113
3114 icl_flags(){
3115     msvc_common_flags "$@"
3116     for flag; do
3117         case $flag in
3118             # Despite what Intel's documentation says -Wall, which is supported
3119             # on Windows, does enable remarks so disable them here.
3120             -Wall)                echo $flag -Qdiag-disable:remark ;;
3121             -std=c99)             echo -Qstd=c99 ;;
3122         esac
3123     done
3124 }
3125
3126 icc_flags(){
3127     for flag; do
3128         case $flag in
3129             -flto)                echo -ipo ;;
3130             *)                    echo $flag ;;
3131         esac
3132     done
3133 }
3134
3135 pgi_flags(){
3136     for flag; do
3137         case $flag in
3138             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3139             -fomit-frame-pointer) echo -Mnoframe ;;
3140             -g)                   echo -gopt ;;
3141             *)                    echo $flag ;;
3142         esac
3143     done
3144 }
3145
3146 suncc_flags(){
3147     for flag; do
3148         case $flag in
3149             -march=*|-mcpu=*)
3150                 case "${flag#*=}" in
3151                     native)                   echo -xtarget=native       ;;
3152                     v9|niagara)               echo -xarch=sparc          ;;
3153                     ultrasparc)               echo -xarch=sparcvis       ;;
3154                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3155                     i586|pentium)             echo -xchip=pentium        ;;
3156                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3157                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3158                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3159                     pentium4*)          echo -xtarget=pentium4           ;;
3160                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3161                     *-sse3)             echo -xarch=sse3                 ;;
3162                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3163                     bonnell)                   echo -xarch=ssse3         ;;
3164                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3165                     westmere)                  echo -xtarget=westmere    ;;
3166                     silvermont)                echo -xarch=sse4_2        ;;
3167                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3168                     core-avx*|ivybridge|haswell|broadwell)
3169                                                echo -xarch=avx           ;;
3170                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3171                     btver1)                    echo -xarch=amdsse4a      ;;
3172                     btver2|bdver*)             echo -xarch=avx           ;;
3173                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3174                     k8|opteron|athlon64|athlon-fx)
3175                                                echo -xarch=sse2a         ;;
3176                     athlon*)                   echo -xarch=pentium_proa  ;;
3177                 esac
3178                 ;;
3179             -std=c99)             echo -xc99              ;;
3180             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3181             -fPIC)                echo -KPIC -xcode=pic32 ;;
3182             -W*,*)                echo $flag              ;;
3183             -f*-*|-W*|-mimpure-text)                      ;;
3184             -shared)              echo -G                 ;;
3185             *)                    echo $flag              ;;
3186         esac
3187     done
3188 }
3189
3190 tms470_flags(){
3191     for flag; do
3192         case $flag in
3193             -march=*|-mcpu=*)
3194                 case "${flag#*=}" in
3195                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3196                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3197                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3198                     armv6*|arm11*)          echo -mv=6   ;;
3199                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3200                                             echo -mv=5e  ;;
3201                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3202                 esac
3203                 ;;
3204             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3205             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3206             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3207             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3208             -msoft-float)   echo --float_support=vfplib       ;;
3209             -O[0-3]|-mf=*)  echo $flag                        ;;
3210             -g)             echo -g -mn                       ;;
3211             -pds=*)         echo $flag                        ;;
3212             -D*|-I*)        echo $flag                        ;;
3213             --gcc|--abi=*)  echo $flag                        ;;
3214             -me)            echo $flag                        ;;
3215         esac
3216     done
3217 }
3218
3219 probe_cc(){
3220     pfx=$1
3221     _cc=$2
3222
3223     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3224     unset _ld_o _ldflags _ld_lib _ld_path
3225     unset _depflags _DEPCMD _DEPFLAGS
3226     _flags_filter=echo
3227
3228     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3229         true # no-op to avoid reading stdin in following checks
3230     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3231         _type=llvm_gcc
3232         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3233         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3234         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3235         _cflags_speed='-O3'
3236         _cflags_size='-Os'
3237     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3238         _type=gcc
3239         gcc_version=$($_cc --version | head -n1)
3240         gcc_basever=$($_cc -dumpversion)
3241         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3242         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3243         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3244         if ! $_cc -dumpversion | grep -q '^2\.'; then
3245             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3246         fi
3247         _cflags_speed='-O3'
3248         _cflags_size='-Os'
3249     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3250         _type=icc
3251         _ident=$($_cc --version | head -n1)
3252         _depflags='-MMD'
3253         _cflags_speed='-O3'
3254         _cflags_size='-Os'
3255         _cflags_noopt='-O1'
3256         _flags_filter=icc_flags
3257     elif $_cc -v 2>&1 | grep -q xlc; then
3258         _type=xlc
3259         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3260         _cflags_speed='-O5'
3261         _cflags_size='-O5 -qcompact'
3262     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3263         _type=ccc
3264         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3265         _DEPFLAGS='-M'
3266         _cflags_speed='-fast'
3267         _cflags_size='-O1'
3268         _flags_filter=ccc_flags
3269     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3270         test -d "$sysroot" || die "No valid sysroot specified."
3271         _type=armcc
3272         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3273         armcc_conf="$PWD/armcc.conf"
3274         $_cc --arm_linux_configure                 \
3275              --arm_linux_config_file="$armcc_conf" \
3276              --configure_sysroot="$sysroot"        \
3277              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3278              die "Error creating armcc configuration file."
3279         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3280         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3281         as_default="${cross_prefix}gcc"
3282         _depflags='-MMD'
3283         _cflags_speed='-O3'
3284         _cflags_size='-Os'
3285     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3286         _type=tms470
3287         _ident=$($_cc -version | head -n1 | tr -s ' ')
3288         _flags='--gcc --abi=eabi -me'
3289         _cc_e='-ppl -fe=$@'
3290         _cc_o='-fe=$@'
3291         _depflags='-ppa -ppd=$(@:.o=.d)'
3292         _cflags_speed='-O3 -mf=5'
3293         _cflags_size='-O3 -mf=2'
3294         _flags_filter=tms470_flags
3295     elif $_cc -v 2>&1 | grep -q clang; then
3296         _type=clang
3297         _ident=$($_cc --version | head -n1)
3298         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3299         _cflags_speed='-O3'
3300         _cflags_size='-Os'
3301     elif $_cc -V 2>&1 | grep -q Sun; then
3302         _type=suncc
3303         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3304         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3305         _DEPFLAGS='-xM1 -xc99'
3306         _ldflags='-std=c99'
3307         _cflags_speed='-O5'
3308         _cflags_size='-O5 -xspace'
3309         _flags_filter=suncc_flags
3310     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3311         _type=pathscale
3312         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3313         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3314         _cflags_speed='-O2'
3315         _cflags_size='-Os'
3316         _flags_filter='filter_out -Wdisabled-optimization'
3317     elif $_cc -v 2>&1 | grep -q Open64; then
3318         _type=open64
3319         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3320         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3321         _cflags_speed='-O2'
3322         _cflags_size='-Os'
3323         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3324     elif $_cc -V 2>&1 | grep -q Portland; then
3325         _type=pgi
3326         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3327         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3328         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3329         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3330         _cflags_noopt="-O"
3331         _flags_filter=pgi_flags
3332     elif $_cc 2>&1 | grep -q Microsoft; then
3333         _type=msvc
3334         _ident=$($cc 2>&1 | head -n1)
3335         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3336         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3337         _cflags_speed="-O2"
3338         _cflags_size="-O1"
3339         if $_cc 2>&1 | grep -q Linker; then
3340             _ld_o='-out:$@'
3341         else
3342             _ld_o='-Fe$@'
3343         fi
3344         _cc_o='-Fo$@'
3345         _cc_e='-P -Fi$@'
3346         _flags_filter=msvc_flags
3347         _ld_lib='lib%.a'
3348         _ld_path='-libpath:'
3349         _flags='-nologo'
3350         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3351         if [ $pfx = hostcc ]; then
3352             append _cflags -Dsnprintf=_snprintf
3353         fi
3354         disable stripping
3355     elif $_cc 2>&1 | grep -q Intel; then
3356         _type=icl
3357         _ident=$($cc 2>&1 | head -n1)
3358         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3359         # Not only is O3 broken on 13.x+ but it is slower on all previous
3360         # versions (tested) as well.
3361         _cflags_speed="-O2"
3362         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3363         if $_cc 2>&1 | grep -q Linker; then
3364             _ld_o='-out:$@'
3365         else
3366             _ld_o='-Fe$@'
3367         fi
3368         _cc_o='-Fo$@'
3369         _cc_e='-P'
3370         _flags_filter=icl_flags
3371         _ld_lib='lib%.a'
3372         _ld_path='-libpath:'
3373         # -Qdiag-error to make icl error when seeing certain unknown arguments
3374         _flags='-nologo -Qdiag-error:4044,10157'
3375         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3376         # with MSVC which enables it by default.
3377         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3378         if [ $pfx = hostcc ]; then
3379             append _cflags -Dsnprintf=_snprintf
3380         fi
3381     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3382         _type=cparser
3383         _ident=$($_cc --version | head -n1)
3384         _depflags='-MMD'
3385         _cflags_speed='-O4'
3386         _cflags_size='-O2'
3387         _flags_filter=cparser_flags
3388     fi
3389
3390     eval ${pfx}_type=\$_type
3391     eval ${pfx}_ident=\$_ident
3392 }
3393
3394 set_ccvars(){
3395     eval ${1}_C=\${_cc_c-\${${1}_C}}
3396     eval ${1}_E=\${_cc_e-\${${1}_E}}
3397     eval ${1}_O=\${_cc_o-\${${1}_O}}
3398
3399     if [ -n "$_depflags" ]; then
3400         eval ${1}_DEPFLAGS=\$_depflags
3401     else
3402         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3403         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3404         eval DEP${1}FLAGS=\$_flags
3405     fi
3406 }
3407
3408 probe_cc cc "$cc"
3409 cflags_filter=$_flags_filter
3410 cflags_speed=$_cflags_speed
3411 cflags_size=$_cflags_size
3412 cflags_noopt=$_cflags_noopt
3413 add_cflags $_flags $_cflags
3414 cc_ldflags=$_ldflags
3415 set_ccvars CC
3416
3417 probe_cc hostcc "$host_cc"
3418 host_cflags_filter=$_flags_filter
3419 add_host_cflags  $_flags $_cflags
3420 set_ccvars HOSTCC
3421
3422 test -n "$cc_type" && enable $cc_type ||
3423     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3424
3425 : ${as_default:=$cc}
3426 : ${dep_cc_default:=$cc}
3427 : ${ld_default:=$cc}
3428 : ${host_ld_default:=$host_cc}
3429 set_default ar as dep_cc ld host_ld windres
3430
3431 probe_cc as "$as"
3432 asflags_filter=$_flags_filter
3433 add_asflags $_flags $_cflags
3434 set_ccvars AS
3435
3436 probe_cc ld "$ld"
3437 ldflags_filter=$_flags_filter
3438 add_ldflags $_flags $_ldflags
3439 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3440 LD_O=${_ld_o-$LD_O}
3441 LD_LIB=${_ld_lib-$LD_LIB}
3442 LD_PATH=${_ld_path-$LD_PATH}
3443
3444 probe_cc hostld "$host_ld"
3445 host_ldflags_filter=$_flags_filter
3446 add_host_ldflags $_flags $_ldflags
3447 HOSTLD_O=${_ld_o-$HOSTLD_O}
3448
3449 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3450     probe_cc depcc "$dep_cc"
3451     CCDEP=${_DEPCMD:-$DEPCMD}
3452     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3453     DEPCCFLAGS=$_flags
3454 fi
3455
3456 if $ar 2>&1 | grep -q Microsoft; then
3457     arflags="-nologo"
3458     ar_o='-out:$@'
3459 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3460     arflags="rq"
3461     ar_o='$@'
3462 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3463     arflags='-Xany -r -c'
3464     ar_o='$@'
3465 else
3466     arflags="rc"
3467     ar_o='$@'
3468 fi
3469
3470 add_cflags $extra_cflags
3471 add_cxxflags $extra_cxxflags
3472 add_asflags $extra_cflags
3473
3474 if test -n "$sysroot"; then
3475     case "$cc_type" in
3476         gcc|llvm_gcc|clang)
3477             add_cppflags --sysroot="$sysroot"
3478             add_ldflags --sysroot="$sysroot"
3479 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3480             add_cppflags -isysroot "$sysroot"
3481             add_ldflags -isysroot "$sysroot"
3482         ;;
3483         tms470)
3484             add_cppflags -I"$sysinclude"
3485             add_ldflags  --sysroot="$sysroot"
3486         ;;
3487     esac
3488 fi
3489
3490 if test "$cpu" = host; then
3491     enabled cross_compile &&
3492         die "--cpu=host makes no sense when cross-compiling."
3493
3494     case "$cc_type" in
3495         gcc|llvm_gcc)
3496             check_native(){
3497                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3498                 sed -n "/cc1.*$1=/{
3499                             s/.*$1=\\([^ ]*\\).*/\\1/
3500                             p
3501                             q
3502                         }" $TMPE
3503             }
3504             cpu=$(check_native -march || check_native -mcpu)
3505         ;;
3506     esac
3507
3508     test "${cpu:-host}" = host &&
3509         die "--cpu=host not supported with compiler $cc"
3510 fi
3511
3512 # Deal with common $arch aliases
3513 case "$arch" in
3514     aarch64|arm64)
3515         arch="aarch64"
3516     ;;
3517     arm*|iPad*|iPhone*)
3518         arch="arm"
3519     ;;
3520     mips*|IP*)
3521         arch="mips"
3522     ;;
3523     parisc*|hppa*)
3524         arch="parisc"
3525     ;;
3526     "Power Macintosh"|ppc*|powerpc*)
3527         arch="ppc"
3528     ;;
3529     s390|s390x)
3530         arch="s390"
3531     ;;
3532     sh4|sh)
3533         arch="sh4"
3534     ;;
3535     sun4u|sparc*)
3536         arch="sparc"
3537     ;;
3538     tilegx|tile-gx)
3539         arch="tilegx"
3540     ;;
3541     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3542         arch="x86"
3543     ;;
3544 esac
3545
3546 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3547 enable $arch
3548
3549 # Add processor-specific flags
3550 if enabled aarch64; then
3551
3552     case $cpu in
3553         armv*)
3554             cpuflags="-march=$cpu"
3555         ;;
3556         *)
3557             cpuflags="-mcpu=$cpu"
3558         ;;
3559     esac
3560
3561 elif enabled alpha; then
3562
3563     cpuflags="-mcpu=$cpu"
3564
3565 elif enabled arm; then
3566
3567     check_arm_arch() {
3568         check_cpp_condition stddef.h \
3569             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3570             $cpuflags
3571     }
3572
3573     probe_arm_arch() {
3574         if   check_arm_arch 4;        then echo armv4;
3575         elif check_arm_arch 4T;       then echo armv4t;
3576         elif check_arm_arch 5;        then echo armv5;
3577         elif check_arm_arch 5E;       then echo armv5e;
3578         elif check_arm_arch 5T;       then echo armv5t;
3579         elif check_arm_arch 5TE;      then echo armv5te;
3580         elif check_arm_arch 5TEJ;     then echo armv5te;
3581         elif check_arm_arch 6;        then echo armv6;
3582         elif check_arm_arch 6J;       then echo armv6j;
3583         elif check_arm_arch 6K;       then echo armv6k;
3584         elif check_arm_arch 6Z;       then echo armv6z;
3585         elif check_arm_arch 6ZK;      then echo armv6zk;
3586         elif check_arm_arch 6T2;      then echo armv6t2;
3587         elif check_arm_arch 7;        then echo armv7;
3588         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3589         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3590         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3591         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3592         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3593         fi
3594     }
3595
3596     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3597
3598     case $cpu in
3599         armv*)
3600             cpuflags="-march=$cpu"
3601             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3602         ;;
3603         *)
3604             cpuflags="-mcpu=$cpu"
3605             case $cpu in
3606                 cortex-a*)                               subarch=armv7a  ;;
3607                 cortex-r*)                               subarch=armv7r  ;;
3608                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3609                 arm11*)                                  subarch=armv6   ;;
3610                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3611                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3612                 *)                             subarch=$(probe_arm_arch) ;;
3613             esac
3614         ;;
3615     esac
3616
3617     case "$subarch" in
3618         armv5t*)    enable fast_clz                ;;
3619         armv[6-8]*)
3620             enable fast_clz
3621             disabled fast_unaligned || enable fast_unaligned
3622             ;;
3623     esac
3624
3625 elif enabled avr32; then
3626
3627     case $cpu in
3628         ap7[02]0[0-2])
3629             subarch="avr32_ap"
3630             cpuflags="-mpart=$cpu"
3631         ;;
3632         ap)
3633             subarch="avr32_ap"
3634             cpuflags="-march=$cpu"
3635         ;;
3636         uc3[ab]*)
3637             subarch="avr32_uc"
3638             cpuflags="-mcpu=$cpu"
3639         ;;
3640         uc)
3641             subarch="avr32_uc"
3642             cpuflags="-march=$cpu"
3643         ;;
3644     esac
3645
3646 elif enabled bfin; then
3647
3648     cpuflags="-mcpu=$cpu"
3649
3650 elif enabled mips; then
3651
3652     cpuflags="-march=$cpu"
3653
3654     case $cpu in
3655         24kc)
3656             disable mipsfpu
3657             disable mipsdspr1
3658             disable mipsdspr2
3659         ;;
3660         24kf*)
3661             disable mipsdspr1
3662             disable mipsdspr2
3663         ;;
3664         24kec|34kc|1004kc)
3665             disable mipsfpu
3666             disable mipsdspr2
3667         ;;
3668         24kef*|34kf*|1004kf*)
3669             disable mipsdspr2
3670         ;;
3671         74kc)
3672             disable mipsfpu
3673         ;;
3674     esac
3675
3676 elif enabled ppc; then
3677
3678     disable ldbrx
3679
3680     case $(tolower $cpu) in
3681         601|ppc601|powerpc601)
3682             cpuflags="-mcpu=601"
3683             disable altivec
3684         ;;
3685         603*|ppc603*|powerpc603*)
3686             cpuflags="-mcpu=603"
3687             disable altivec
3688         ;;
3689         604*|ppc604*|powerpc604*)
3690             cpuflags="-mcpu=604"
3691             disable altivec
3692         ;;
3693         g3|75*|ppc75*|powerpc75*)
3694             cpuflags="-mcpu=750"
3695             disable altivec
3696         ;;
3697         g4|745*|ppc745*|powerpc745*)
3698             cpuflags="-mcpu=7450"
3699         ;;
3700         74*|ppc74*|powerpc74*)
3701             cpuflags="-mcpu=7400"
3702         ;;
3703         g5|970|ppc970|powerpc970)
3704             cpuflags="-mcpu=970"
3705         ;;
3706         power[3-7]*)
3707             cpuflags="-mcpu=$cpu"
3708         ;;
3709         cell)
3710             cpuflags="-mcpu=cell"
3711             enable ldbrx
3712         ;;
3713         e500mc)
3714             cpuflags="-mcpu=e500mc"
3715             disable altivec
3716         ;;
3717         e500v2)
3718             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3719             disable altivec
3720             disable dcbzl
3721         ;;
3722         e500)
3723             cpuflags="-mcpu=8540 -mhard-float"
3724             disable altivec
3725             disable dcbzl
3726         ;;
3727     esac
3728
3729 elif enabled sparc; then
3730
3731     case $cpu in
3732         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3733             cpuflags="-mcpu=$cpu"
3734         ;;
3735         ultrasparc*|niagara[234])
3736             cpuflags="-mcpu=$cpu"
3737         ;;
3738     esac
3739
3740 elif enabled x86; then
3741
3742     case $cpu in
3743         i[345]86|pentium)
3744             cpuflags="-march=$cpu"
3745             disable mmx
3746         ;;
3747         # targets that do NOT support nopl and conditional mov (cmov)
3748         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3749             cpuflags="-march=$cpu"
3750             disable i686
3751         ;;
3752         # targets that do support nopl and conditional mov (cmov)
3753         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3754         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3755             cpuflags="-march=$cpu"
3756             enable i686
3757             enable fast_cmov
3758         ;;
3759         # targets that do support conditional mov but on which it's slow
3760         pentium4|pentium4m|prescott|nocona)
3761             cpuflags="-march=$cpu"
3762             enable i686
3763             disable fast_cmov
3764         ;;
3765     esac
3766
3767 fi
3768
3769 if [ "$cpu" != generic ]; then
3770     add_cflags  $cpuflags
3771     add_asflags $cpuflags
3772 fi
3773
3774 # compiler sanity check
3775 check_exec <<EOF
3776 int main(void){ return 0; }
3777 EOF
3778 if test "$?" != 0; then
3779     echo "$cc is unable to create an executable file."
3780     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3781         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3782         echo "Only do this if you know what cross compiling means."
3783     fi
3784     die "C compiler test failed."
3785 fi
3786
3787 add_cppflags -D_ISOC99_SOURCE
3788 add_cxxflags -D__STDC_CONSTANT_MACROS
3789 check_cflags -std=c99
3790 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3791 #include <stdlib.h>
3792 EOF
3793 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3794 #include <stdlib.h>
3795 EOF
3796
3797 add_host_cppflags -D_ISOC99_SOURCE
3798 check_host_cflags -std=c99
3799 check_host_cflags -Wall
3800 check_host_cflags -O3
3801
3802 check_64bit(){
3803     arch32=$1
3804     arch64=$2
3805     expr=$3
3806     check_code cc "" "int test[2*($expr) - 1]" &&
3807         subarch=$arch64 || subarch=$arch32
3808 }
3809
3810 case "$arch" in
3811     aarch64|alpha|ia64)
3812         spic=$shared
3813     ;;
3814     mips)
3815         check_64bit mips mips64 '_MIPS_SIM > 1'
3816         spic=$shared
3817     ;;
3818     parisc)
3819         check_64bit parisc parisc64 'sizeof(void *) > 4'
3820         spic=$shared
3821     ;;
3822     ppc)
3823         check_64bit ppc ppc64 'sizeof(void *) > 4'
3824         spic=$shared
3825     ;;
3826     s390)
3827         check_64bit s390 s390x 'sizeof(void *) > 4'
3828         spic=$shared
3829     ;;
3830     sparc)
3831         check_64bit sparc sparc64 'sizeof(void *) > 4'
3832         spic=$shared
3833     ;;
3834     x86)
3835         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3836         if test "$subarch" = "x86_64"; then
3837             spic=$shared
3838         fi
3839     ;;
3840     ppc)
3841         check_cc <<EOF && subarch="ppc64"
3842         int test[(int)sizeof(char*) - 7];
3843 EOF
3844     ;;
3845 esac
3846
3847 enable $subarch
3848 enabled spic && enable_weak pic
3849
3850 # OS specific
3851 case $target_os in
3852     aix)
3853         SHFLAGS=-shared
3854         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3855         enabled shared && add_ldflags -Wl,-brtl
3856         ;;
3857     haiku)
3858         prefix_default="/boot/common"
3859         network_extralibs="-lnetwork"
3860         host_libs=
3861         ;;
3862     sunos)
3863         SHFLAGS='-shared -Wl,-h,$$(@F)'
3864         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3865         network_extralibs="-lsocket -lnsl"
3866         # When using suncc to build, the Solaris linker will mark
3867         # an executable with each instruction set encountered by
3868         # the Solaris assembler.  As our libraries contain their own
3869         # guards for processor-specific code, instead suppress
3870         # generation of the HWCAPS ELF section on Solaris x86 only.
3871         enabled_all suncc x86 &&
3872             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3873             add_ldflags -Wl,-M,mapfile
3874         nm_default='nm -P -g'
3875         ;;
3876     netbsd)
3877         disable symver
3878         oss_indev_extralibs="-lossaudio"
3879         oss_outdev_extralibs="-lossaudio"
3880         enabled gcc || check_ldflags -Wl,-zmuldefs
3881         ;;
3882     openbsd|bitrig)
3883         disable symver
3884         SHFLAGS='-shared'
3885         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3886         SLIB_INSTALL_LINKS=
3887         oss_indev_extralibs="-lossaudio"
3888         oss_outdev_extralibs="-lossaudio"
3889         ;;
3890     dragonfly)
3891         disable symver
3892         ;;
3893     freebsd)
3894         ;;
3895     bsd/os)
3896         add_extralibs -lpoll -lgnugetopt
3897         strip="strip -d"
3898         ;;
3899     darwin)
3900         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3901         enabled ppc && add_asflags -force_cpusubtype_ALL
3902         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3903         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3904         strip="${strip} -x"
3905         add_ldflags -Wl,-dynamic,-search_paths_first
3906         SLIBSUF=".dylib"
3907         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3908         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3909         objformat="macho"
3910         enabled x86_64 && objformat="macho64"
3911         enabled_any pic shared ||
3912             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3913         ;;
3914     mingw32*)
3915         if test $target_os = "mingw32ce"; then
3916             disable network
3917         else
3918             target_os=mingw32
3919         fi
3920         LIBTARGET=i386
3921         if enabled x86_64; then
3922             LIBTARGET="i386:x86-64"
3923         elif enabled arm; then
3924             LIBTARGET=arm-wince
3925         fi
3926         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3927         check_ldflags -Wl,--nxcompat
3928         check_ldflags -Wl,--dynamicbase
3929         shlibdir_default="$bindir_default"
3930         SLIBPREF=""
3931         SLIBSUF=".dll"
3932         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3933         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3934         dlltool="${cross_prefix}dlltool"
3935         if check_cmd lib.exe -list; then
3936             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3937             if enabled x86_64; then
3938                 LIBTARGET=x64
3939             fi
3940         elif check_cmd $dlltool --version; then
3941             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3942         fi
3943         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3944         SLIB_INSTALL_LINKS=
3945         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3946         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3947         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3948         objformat="win32"
3949         ranlib=:
3950         enable dos_paths
3951         ;;
3952     win32|win64)
3953         disable symver
3954         if enabled shared; then
3955             # Link to the import library instead of the normal static library
3956             # for shared libs.
3957             LD_LIB='%.lib'
3958             # Cannot build both shared and static libs with MSVC or icl.
3959             disable static
3960         fi
3961         shlibdir_default="$bindir_default"
3962         SLIBPREF=""
3963         SLIBSUF=".dll"
3964         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3965         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3966         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3967         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3968         SLIB_INSTALL_LINKS=
3969         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3970         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3971         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3972         objformat="win32"
3973         ranlib=:
3974         enable dos_paths
3975         ;;
3976     cygwin*)
3977         target_os=cygwin
3978         shlibdir_default="$bindir_default"
3979         SLIBPREF="cyg"
3980         SLIBSUF=".dll"
3981         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3982         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3983         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3984         SLIB_INSTALL_LINKS=
3985         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3986         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3987         objformat="win32"
3988         enable dos_paths
3989         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3990         ;;
3991     *-dos|freedos|opendos)
3992         network_extralibs="-lsocket"
3993         objformat="coff"
3994         enable dos_paths
3995         add_cppflags -U__STRICT_ANSI__
3996         ;;
3997     linux)
3998         enable dv1394
3999         ;;
4000     irix*)
4001         target_os=irix
4002         ranlib="echo ignoring ranlib"
4003         ;;
4004     os/2*)
4005         strip="lxlite -CS"
4006         ln_s="cp -f"
4007         objformat="aout"
4008         add_cppflags -D_GNU_SOURCE
4009         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4010         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4011         LIBSUF="_s.a"
4012         SLIBPREF=""
4013         SLIBSUF=".dll"
4014         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4015         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4016         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4017             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4018             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4019             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4020             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4021             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4022         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4023             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4024         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4025         enable dos_paths
4026         enable_weak os2threads
4027         ;;
4028     gnu/kfreebsd)
4029         add_cppflags -D_BSD_SOURCE
4030         ;;
4031     gnu)
4032         ;;
4033     qnx)
4034         add_cppflags -D_QNX_SOURCE
4035         network_extralibs="-lsocket"
4036         ;;
4037     symbian)
4038         SLIBSUF=".dll"
4039         enable dos_paths
4040         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4041         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4042         add_ldflags -Wl,--target1-abs,--no-undefined \
4043                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4044                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4045         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4046                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4047                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4048         ;;
4049     osf1)
4050         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4051         ;;
4052     minix)
4053         ;;
4054     plan9)
4055         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4056                      -D_REENTRANT_SOURCE        \
4057                      -D_RESEARCH_SOURCE         \
4058                      -DFD_SETSIZE=96            \
4059                      -DHAVE_SOCK_OPTS
4060         add_compat strtod.o strtod=avpriv_strtod
4061         network_extralibs='-lbsd'
4062         exeobjs=compat/plan9/main.o
4063         disable ffserver
4064         cp_f='cp'
4065         ;;
4066     none)
4067         ;;
4068     *)
4069         die "Unknown OS '$target_os'."
4070         ;;
4071 esac
4072
4073 # determine libc flavour
4074
4075 probe_libc(){
4076     pfx=$1
4077     pfx_no_=${pfx%_}
4078     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4079     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4080         eval ${pfx}libc_type=uclibc
4081         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4082     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4083         eval ${pfx}libc_type=glibc
4084         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4085     # MinGW headers can be installed on Cygwin, so check for newlib first.
4086     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4087         eval ${pfx}libc_type=newlib
4088         add_${pfx}cppflags -U__STRICT_ANSI__
4089     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4090     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4091         eval ${pfx}libc_type=mingw64
4092         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4093             add_compat msvcrt/snprintf.o
4094             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4095         fi
4096         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4097         eval test \$${pfx_no_}cc_type = "gcc" &&
4098             add_${pfx}cppflags -D__printf__=__gnu_printf__
4099     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4100          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4101         eval ${pfx}libc_type=mingw32
4102         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4103             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4104             die "ERROR: MinGW32 runtime version must be >= 3.15."
4105         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4106         eval test \$${pfx_no_}cc_type = "gcc" &&
4107             add_${pfx}cppflags -D__printf__=__gnu_printf__
4108     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4109         eval ${pfx}libc_type=msvcrt
4110         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4111         # 0x601 by default unless something else is set by the user.
4112         # This can easily lead to us detecting functions only present
4113         # in such new versions and producing binaries requiring windows 7.0.
4114         # Therefore explicitly set the default to XP unless the user has
4115         # set something else on the command line.
4116         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4117             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4118     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4119         eval ${pfx}libc_type=klibc
4120     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4121         eval ${pfx}libc_type=bionic
4122     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4123         eval ${pfx}libc_type=solaris
4124         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4125     fi
4126 }
4127
4128 probe_libc
4129 test -n "$libc_type" && enable libc_$libc_type
4130 probe_libc host_
4131 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4132
4133 case $libc_type in
4134     bionic)
4135         add_compat strtod.o strtod=avpriv_strtod
4136         ;;
4137     msvcrt)
4138         add_compat strtod.o strtod=avpriv_strtod
4139         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4140                                      _snprintf=avpriv_snprintf  \
4141                                      vsnprintf=avpriv_vsnprintf
4142         ;;
4143 esac
4144
4145 # hacks for compiler/libc/os combinations
4146
4147 if enabled_all tms470 libc_glibc; then
4148     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4149     add_cppflags -D__USER_LABEL_PREFIX__=
4150     add_cppflags -D__builtin_memset=memset
4151     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4152     add_cflags   -pds=48    # incompatible redefinition of macro
4153 fi
4154
4155 if enabled_all ccc libc_glibc; then
4156     add_ldflags -Wl,-z,now  # calls to libots crash without this
4157 fi
4158
4159 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4160     add_cppflags '-I\$(SRC_PATH)/compat/float'
4161
4162 esc(){
4163     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4164 }
4165
4166 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4167
4168 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4169
4170 set_default $PATHS_LIST
4171 set_default nm
4172
4173 # we need to build at least one lib type
4174 if ! enabled_any static shared; then
4175     cat <<EOF
4176 At least one library type must be built.
4177 Specify --enable-static to build the static libraries or --enable-shared to
4178 build the shared libraries as well. To only build the shared libraries specify
4179 --disable-static in addition to --enable-shared.
4180 EOF
4181     exit 1;
4182 fi
4183
4184 die_license_disabled() {
4185     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4186 }
4187
4188 die_license_disabled_gpl() {
4189     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4190 }
4191
4192 die_license_disabled gpl frei0r
4193 die_license_disabled gpl libcdio
4194 die_license_disabled gpl libutvideo
4195 die_license_disabled gpl libvidstab
4196 die_license_disabled gpl libx264
4197 die_license_disabled gpl libx265
4198 die_license_disabled gpl libxavs
4199 die_license_disabled gpl libxvid
4200 die_license_disabled gpl libzvbi
4201 die_license_disabled gpl x11grab
4202
4203 die_license_disabled nonfree libaacplus
4204 die_license_disabled nonfree libfaac
4205 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4206 enabled gpl && die_license_disabled_gpl nonfree openssl
4207
4208 die_license_disabled version3 libopencore_amrnb
4209 die_license_disabled version3 libopencore_amrwb
4210 die_license_disabled version3 libvo_aacenc
4211 die_license_disabled version3 libvo_amrwbenc
4212
4213 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4214
4215 disabled optimizations || check_cflags -fomit-frame-pointer
4216
4217 enable_weak_pic() {
4218     disabled pic && return
4219     enable pic
4220     add_cppflags -DPIC
4221     case "$target_os" in
4222     mingw*|cygwin*)
4223         ;;
4224     *)
4225         add_cflags -fPIC
4226         ;;
4227     esac
4228     add_asflags  -fPIC
4229 }
4230
4231 enabled pic && enable_weak_pic
4232
4233 check_cc <<EOF || die "Symbol mangling check failed."
4234 int ff_extern;
4235 EOF
4236 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4237 extern_prefix=${sym%%ff_extern*}
4238
4239 check_cc <<EOF && enable_weak inline_asm
4240 void foo(void) { __asm__ volatile ("" ::); }
4241 EOF
4242
4243 _restrict=
4244 for restrict_keyword in restrict __restrict__ __restrict; do
4245     check_cc <<EOF && _restrict=$restrict_keyword && break
4246 void foo(char * $restrict_keyword p);
4247 EOF
4248 done
4249
4250 check_cc <<EOF && enable pragma_deprecated
4251 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4252 EOF
4253
4254 check_cc <<EOF && enable attribute_packed
4255 struct { int x; } __attribute__((packed)) x;
4256 EOF
4257
4258 check_cc <<EOF && enable attribute_may_alias
4259 union { int x; } __attribute__((may_alias)) x;
4260 EOF
4261
4262 check_cc <<EOF || die "endian test failed"
4263 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4264 EOF
4265 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4266
4267 check_inline_asm inline_asm_labels '"1:\n"'
4268
4269 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4270
4271 if enabled aarch64; then
4272     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4273     # internal assembler in clang 3.3 does not support this instruction
4274     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4275     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4276
4277     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4278
4279 elif enabled alpha; then
4280
4281     check_cflags -mieee
4282
4283 elif enabled arm; then
4284
4285     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4286 float func(float a, float b){ return a+b; }
4287 EOF
4288
4289     enabled thumb && check_cflags -mthumb || check_cflags -marm
4290     nogas=die
4291
4292     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4293         enable vfp_args
4294     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4295         case "${cross_prefix:-$cc}" in
4296             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4297             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4298 __asm__ (".eabi_attribute 28, 1");
4299 int main(void) { return 0; }
4300 EOF
4301         esac
4302         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4303     fi
4304
4305     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4306     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4307     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4308     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4309     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4310     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4311
4312     [ $target_os = linux ] ||
4313         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4314             $ARCH_EXT_LIST_ARM
4315
4316     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4317
4318     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4319
4320 elif enabled mips; then
4321
4322     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4323     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4324      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4325     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4326      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4327     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4328      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4329     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4330      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4331
4332 elif enabled parisc; then
4333
4334     if enabled gcc; then
4335         case $($cc -dumpversion) in
4336             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4337         esac
4338     fi
4339
4340 elif enabled ppc; then
4341
4342     enable local_aligned_8 local_aligned_16 local_aligned_32
4343
4344     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4345     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4346     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4347     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4348
4349     # AltiVec flags: The FSF version of GCC differs from the Apple version
4350     if enabled altivec; then
4351         if ! enabled_any pic ppc64; then
4352             nogas=warn
4353         fi
4354         check_cflags -maltivec -mabi=altivec &&
4355         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4356         check_cflags -faltivec
4357
4358         # check if our compiler supports Motorola AltiVec C API
4359         check_cc <<EOF || disable altivec
4360 $inc_altivec_h
4361 int main(void) {
4362     vector signed int v1 = (vector signed int) { 0 };
4363     vector signed int v2 = (vector signed int) { 1 };
4364     v1 = vec_add(v1, v2);
4365     return 0;
4366 }
4367 EOF
4368
4369         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4370     fi
4371
4372 elif enabled x86; then
4373
4374     check_builtin rdtsc    intrin.h   "__rdtsc()"
4375     check_builtin mm_empty mmintrin.h "_mm_empty()"
4376
4377     enable local_aligned_8 local_aligned_16 local_aligned_32
4378
4379     # check whether EBP is available on x86
4380     # As 'i' is stored on the stack, this program will crash
4381     # if the base pointer is used to access it because the
4382     # base pointer is cleared in the inline assembly code.
4383     check_exec_crash <<EOF && enable ebp_available
4384 volatile int i=0;
4385 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4386 return i;
4387 EOF
4388
4389     # check whether EBX is available on x86
4390     check_inline_asm ebx_available '""::"b"(0)' &&
4391         check_inline_asm ebx_available '"":::"%ebx"'
4392
4393     # check whether xmm clobbers are supported
4394     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4395
4396     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4397         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4398
4399     # check whether binutils is new enough to compile AVX/SSSE3/MMXEXT
4400     enabled avx    && check_inline_asm avx_inline    '"vextractf128 $1, %ymm0, %xmm1"'
4401     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4402     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4403
4404     if ! disabled_any asm mmx yasm; then
4405         if check_cmd $yasmexe --version; then
4406             enabled x86_64 && yasm_extra="-m amd64"
4407             yasm_debug="-g dwarf2"
4408         elif check_cmd nasm -v; then
4409             yasmexe=nasm
4410             yasm_debug="-g -F dwarf"
4411             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4412         fi
4413
4414         YASMFLAGS="-f $objformat $yasm_extra"
4415         enabled pic               && append YASMFLAGS "-DPIC"
4416         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4417         case "$objformat" in
4418             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4419         esac
4420
4421         check_yasm "movbe ecx, [5]" && enable yasm ||
4422             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4423         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4424         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4425         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4426         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4427         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4428         check_yasm "CPU amdnop" || disable cpunop
4429     fi
4430
4431     case "$cpu" in
4432         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4433             disable fast_clz
4434         ;;
4435     esac
4436
4437 fi
4438
4439 if enabled asm; then
4440     as=${gas:=$as}
4441     check_as <<EOF && enable gnu_as || \
4442         $nogas "GNU assembler not found, install gas-preprocessor"
4443 .macro m n
4444 \n: .int 0
4445 .endm
4446 m x
4447 EOF
4448 fi
4449
4450 check_ldflags -Wl,--as-needed
4451
4452 if check_func dlopen; then
4453     ldl=
4454 elif check_func dlopen -ldl; then
4455     ldl=-ldl
4456 fi
4457
4458 if ! disabled network; then
4459     check_func getaddrinfo $network_extralibs
4460     check_func getservbyport $network_extralibs
4461     check_func inet_aton $network_extralibs
4462
4463     check_type netdb.h "struct addrinfo"
4464     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4465     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4466     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4467     check_type poll.h "struct pollfd"
4468     check_type netinet/sctp.h "struct sctp_event_subscribe"
4469     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4470     check_type netinet/in.h "struct sockaddr_in6"
4471     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4472     check_type "sys/types.h sys/socket.h" socklen_t
4473
4474     # Prefer arpa/inet.h over winsock2
4475     if check_header arpa/inet.h ; then
4476         check_func closesocket
4477     elif check_header winsock2.h ; then
4478         check_func_headers winsock2.h closesocket -lws2 &&
4479             network_extralibs="-lws2" ||
4480         { check_func_headers winsock2.h closesocket -lws2_32 &&
4481             network_extralibs="-lws2_32"; } || disable winsock2_h network
4482         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4483
4484         check_type ws2tcpip.h socklen_t
4485         check_type ws2tcpip.h "struct addrinfo"
4486         check_type ws2tcpip.h "struct group_source_req"
4487         check_type ws2tcpip.h "struct ip_mreq_source"
4488         check_type ws2tcpip.h "struct ipv6_mreq"
4489         check_type winsock2.h "struct pollfd"
4490         check_struct winsock2.h "struct sockaddr" sa_len
4491         check_type ws2tcpip.h "struct sockaddr_in6"
4492         check_type ws2tcpip.h "struct sockaddr_storage"
4493     else
4494         disable network
4495     fi
4496 fi
4497
4498 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4499 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4500 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4501 check_builtin sarestart signal.h "SA_RESTART"
4502 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4503
4504 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4505 check_func  ${malloc_prefix}memalign            && enable memalign
4506 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4507
4508 check_func  access
4509 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4510 check_func  fcntl
4511 check_func  fork
4512 check_func  gethrtime
4513 check_func  getopt
4514 check_func  getrusage
4515 check_func  gettimeofday
4516 check_func  isatty
4517 check_func  localtime_r
4518 check_func  mach_absolute_time
4519 check_func  mkstemp
4520 check_func  mmap
4521 check_func  mprotect
4522 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4523 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4524 check_func  sched_getaffinity
4525 check_func  setrlimit
4526 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4527 check_func  strerror_r
4528 check_func  sysconf
4529 check_func  sysctl
4530 check_func  usleep
4531
4532 check_func_headers conio.h kbhit
4533 check_func_headers io.h setmode
4534 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4535 check_func_headers stdlib.h getenv
4536
4537 check_func_headers windows.h CoTaskMemFree -lole32
4538 check_func_headers windows.h GetProcessAffinityMask
4539 check_func_headers windows.h GetProcessTimes
4540 check_func_headers windows.h GetSystemTimeAsFileTime
4541 check_func_headers windows.h MapViewOfFile
4542 check_func_headers windows.h PeekNamedPipe
4543 check_func_headers windows.h SetConsoleTextAttribute
4544 check_func_headers windows.h Sleep
4545 check_func_headers windows.h VirtualAlloc
4546 check_func_headers glob.h glob
4547 enabled xlib &&
4548     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4549
4550 check_header cl/cl.h
4551 check_header direct.h
4552 check_header dlfcn.h
4553 check_header dxva.h
4554 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4555 check_header io.h
4556 check_header libcrystalhd/libcrystalhd_if.h
4557 check_header mach/mach_time.h
4558 check_header malloc.h
4559 check_header poll.h
4560 check_header sys/mman.h
4561 check_header sys/param.h
4562 check_header sys/resource.h
4563 check_header sys/select.h
4564 check_header sys/time.h
4565 check_header sys/un.h
4566 check_header termios.h
4567 check_header unistd.h
4568 check_header vdpau/vdpau.h
4569 check_header vdpau/vdpau_x11.h
4570 check_header VideoDecodeAcceleration/VDADecoder.h
4571 check_header windows.h
4572 check_header X11/extensions/XvMClib.h
4573 check_header asm/types.h
4574
4575 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4576 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4577 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4578
4579 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4580
4581 if ! disabled w32threads && ! enabled pthreads; then
4582     check_func_headers "windows.h process.h" _beginthreadex &&
4583         enable w32threads || disable w32threads
4584 fi
4585
4586 # check for some common methods of building with pthread support
4587 # do this before the optional library checks as some of them require pthreads
4588 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4589     enable pthreads
4590     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4591         add_cflags -pthread
4592         add_extralibs -pthread
4593     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4594         add_cflags -pthreads
4595         add_extralibs -pthreads
4596     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4597         add_extralibs -lpthreadGC2
4598     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4599         :
4600     elif ! check_func pthread_join && ! check_func pthread_create; then
4601         disable pthreads
4602     fi
4603     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4604 fi
4605
4606
4607 if enabled pthreads; then
4608   check_func pthread_cancel
4609 fi
4610
4611 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4612 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4613
4614 check_lib math.h sin -lm && LIBM="-lm"
4615 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4616
4617 atan2f_args=2
4618 ldexpf_args=2
4619 powf_args=2
4620
4621 for func in $MATH_FUNCS; do
4622     eval check_mathfunc $func \${${func}_args:-1}
4623 done
4624
4625 # these are off by default, so fail if requested and not available
4626 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4627 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4628                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4629                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4630 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4631 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4632 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4633 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4634 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4635 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4636 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4637 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4638 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4639 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4640                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4641                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4642 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4643 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4644 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4645 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"
4646 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4647 enabled fontconfig        && enable libfontconfig
4648 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4649 enabled libfreetype       && require_libfreetype
4650 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4651 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4652                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4653                                done || die "ERROR: libgsm not found"; }
4654 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4655 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4656 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4657 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4658 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4659 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4660 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4661 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4662                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4663                                die "ERROR: libopenjpeg not found"; }
4664 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4665 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4666 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4667 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4668 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4669 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4670 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4671 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4672 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4673 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4674     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4675     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4676 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4677 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4678                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4679                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4680 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4681 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4682 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4683 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4684 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4685 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4686 enabled libvpx            && {
4687     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4688                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4689     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 ||
4690                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4691     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4692     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; } }
4693 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4694 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4695 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4696                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4697                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4698 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4699                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4700                                die "ERROR: libx265 version must be >= 13."; }
4701 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4702 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4703 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4704 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4705 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4706                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4707                                die "ERROR: openal not found"; } &&
4708                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4709                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4710 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4711                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4712                                die "ERROR: opencl not found"; } &&
4713                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4714                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4715                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4716 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4717                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4718                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4719                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4720                                die "ERROR: opengl not found."
4721                              }
4722 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4723                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4724                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4725                                die "ERROR: openssl not found"; }
4726 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4727
4728 if enabled gnutls; then
4729     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4730     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4731 fi
4732
4733 # libdc1394 check
4734 if enabled libdc1394; then
4735     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4736         enable libdc1394_2; } ||
4737     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4738         enable libdc1394_1; } ||
4739     die "ERROR: No version of libdc1394 found "
4740 fi
4741
4742 SDL_CONFIG="${cross_prefix}sdl-config"
4743 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4744     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4745     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4746     enable sdl
4747 else
4748   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4749     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4750     sdl_libs=$("${SDL_CONFIG}" --libs)
4751     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4752     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4753     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4754     enable sdl
4755   fi
4756 fi
4757 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4758
4759 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4760 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4761 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4762 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4763 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4764
4765 check_header linux/fb.h