Merge commit '0d439fbede03854eac8a978cccf21a3425a3c82d'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92
93 Licensing options:
94   --enable-gpl             allow use of GPL code, the resulting libs
95                            and binaries will be under GPL [no]
96   --enable-version3        upgrade (L)GPL to version 3 [no]
97   --enable-nonfree         allow use of nonfree code, the resulting libs
98                            and binaries will be unredistributable [no]
99
100 Configuration options:
101   --disable-static         do not build static libraries [no]
102   --enable-shared          build shared libraries [no]
103   --enable-small           optimize for size instead of speed
104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
105   --enable-gray            enable full grayscale support (slower color)
106   --disable-swscale-alpha  disable alpha channel support in swscale
107   --disable-all            disable building components, libraries and programs
108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
109   --enable-raise-major     increase major version numbers in sonames [no]
110
111 Program options:
112   --disable-programs       do not build command line programs
113   --disable-ffmpeg         disable ffmpeg build
114   --disable-ffplay         disable ffplay build
115   --disable-ffprobe        disable ffprobe build
116   --disable-ffserver       disable ffserver build
117
118 Documentation options:
119   --disable-doc            do not build documentation
120   --disable-htmlpages      do not build HTML documentation pages
121   --disable-manpages       do not build man documentation pages
122   --disable-podpages       do not build POD documentation pages
123   --disable-txtpages       do not build text documentation pages
124
125 Component options:
126   --disable-avdevice       disable libavdevice build
127   --disable-avcodec        disable libavcodec build
128   --disable-avformat       disable libavformat build
129   --disable-avutil         disable libavutil build
130   --disable-swresample     disable libswresample build
131   --disable-swscale        disable libswscale build
132   --disable-postproc       disable libpostproc build
133   --disable-avfilter       disable libavfilter build
134   --enable-avresample      enable libavresample build [no]
135   --disable-pthreads       disable pthreads [auto]
136   --disable-w32threads     disable Win32 threads [auto]
137   --disable-os2threads     disable OS/2 threads [auto]
138   --disable-network        disable network support [no]
139   --disable-dct            disable DCT code
140   --disable-dwt            disable DWT code
141   --disable-error-resilience disable error resilience code
142   --disable-lsp            disable LSP code
143   --disable-lzo            disable LZO decoder code
144   --disable-mdct           disable MDCT code
145   --disable-rdft           disable RDFT code
146   --disable-fft            disable FFT code
147
148 Hardware accelerators:
149   --disable-dxva2          disable DXVA2 code [autodetect]
150   --disable-vaapi          disable VAAPI code [autodetect]
151   --disable-vda            disable VDA code [autodetect]
152   --disable-vdpau          disable VDPAU code [autodetect]
153
154 Individual component options:
155   --disable-everything     disable all components listed below
156   --disable-encoder=NAME   disable encoder NAME
157   --enable-encoder=NAME    enable encoder NAME
158   --disable-encoders       disable all encoders
159   --disable-decoder=NAME   disable decoder NAME
160   --enable-decoder=NAME    enable decoder NAME
161   --disable-decoders       disable all decoders
162   --disable-hwaccel=NAME   disable hwaccel NAME
163   --enable-hwaccel=NAME    enable hwaccel NAME
164   --disable-hwaccels       disable all hwaccels
165   --disable-muxer=NAME     disable muxer NAME
166   --enable-muxer=NAME      enable muxer NAME
167   --disable-muxers         disable all muxers
168   --disable-demuxer=NAME   disable demuxer NAME
169   --enable-demuxer=NAME    enable demuxer NAME
170   --disable-demuxers       disable all demuxers
171   --enable-parser=NAME     enable parser NAME
172   --disable-parser=NAME    disable parser NAME
173   --disable-parsers        disable all parsers
174   --enable-bsf=NAME        enable bitstream filter NAME
175   --disable-bsf=NAME       disable bitstream filter NAME
176   --disable-bsfs           disable all bitstream filters
177   --enable-protocol=NAME   enable protocol NAME
178   --disable-protocol=NAME  disable protocol NAME
179   --disable-protocols      disable all protocols
180   --enable-indev=NAME      enable input device NAME
181   --disable-indev=NAME     disable input device NAME
182   --disable-indevs         disable input devices
183   --enable-outdev=NAME     enable output device NAME
184   --disable-outdev=NAME    disable output device NAME
185   --disable-outdevs        disable output devices
186   --disable-devices        disable all devices
187   --enable-filter=NAME     enable filter NAME
188   --disable-filter=NAME    disable filter NAME
189   --disable-filters        disable all filters
190
191 External library support:
192   --enable-avisynth        enable reading of AviSynth script files [no]
193   --disable-bzlib          disable bzlib [autodetect]
194   --enable-fontconfig      enable fontconfig
195   --enable-frei0r          enable frei0r video filtering
196   --enable-gnutls          enable gnutls [no]
197   --disable-iconv          disable iconv [autodetect]
198   --enable-ladspa          enable LADSPA audio filtering
199   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
200   --enable-libass          enable libass subtitles rendering [no]
201   --enable-libbluray       enable BluRay reading using libbluray [no]
202   --enable-libbs2b         enable bs2b DSP library [no]
203   --enable-libcaca         enable textual display using libcaca
204   --enable-libcelt         enable CELT decoding via libcelt [no]
205   --enable-libcdio         enable audio CD grabbing with libcdio
206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
207                            and libraw1394 [no]
208   --enable-libfaac         enable AAC encoding via libfaac [no]
209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
211   --enable-libfreetype     enable libfreetype [no]
212   --enable-libgme          enable Game Music Emu via libgme [no]
213   --enable-libgsm          enable GSM de/encoding via libgsm [no]
214   --enable-libiec61883     enable iec61883 via libiec61883 [no]
215   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
216   --enable-libmodplug      enable ModPlug via libmodplug [no]
217   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
218   --enable-libnut          enable NUT (de)muxing via libnut,
219                            native (de)muxer exists [no]
220   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
221   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
222   --enable-libopencv       enable video filtering via libopencv [no]
223   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
224   --enable-libopus         enable Opus de/encoding via libopus [no]
225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
226   --enable-libquvi         enable quvi input via libquvi [no]
227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
230   --enable-libsoxr         enable Include libsoxr resampling [no]
231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
232   --enable-libssh          enable SFTP protocol via libssh [no]
233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
234   --enable-libtheora       enable Theora encoding via libtheora [no]
235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
238   --enable-libvidstab      enable video stabilization using vid.stab [no]
239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
242                            native implementation exists [no]
243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
245   --enable-libwebp         enable WebP encoding via libwebp [no]
246   --enable-libx264         enable H.264 encoding via x264 [no]
247   --enable-libx265         enable HEVC encoding via x265 [no]
248   --enable-libxavs         enable AVS encoding via xavs [no]
249   --enable-libxvid         enable Xvid encoding via xvidcore,
250                            native MPEG-4/Xvid encoder exists [no]
251   --enable-libzmq          enable message passing via libzmq [no]
252   --enable-libzvbi         enable teletext support via libzvbi [no]
253   --enable-decklink        enable Blackmagick DeckLink output [no]
254   --enable-openal          enable OpenAL 1.1 capture support [no]
255   --enable-opencl          enable OpenCL code
256   --enable-opengl          enable OpenGL rendering [no]
257   --enable-openssl         enable openssl [no]
258   --enable-x11grab         enable X11 grabbing [no]
259   --disable-xlib           disable xlib [autodetect]
260   --disable-zlib           disable zlib [autodetect]
261
262 Toolchain options:
263   --arch=ARCH              select architecture [$arch]
264   --cpu=CPU                select the minimum required CPU (affects
265                            instruction selection, may crash on older CPUs)
266   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
267   --progs-suffix=SUFFIX    program name suffix []
268   --enable-cross-compile   assume a cross-compiler is used
269   --sysroot=PATH           root of cross-build tree
270   --sysinclude=PATH        location of cross-build system headers
271   --target-os=OS           compiler targets OS [$target_os]
272   --target-exec=CMD        command to run executables on target
273   --target-path=DIR        path to view of build directory on target
274   --target-samples=DIR     path to samples directory on target
275   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
276   --toolchain=NAME         set tool defaults according to NAME
277   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
278   --nm=NM                  use nm tool NM [$nm_default]
279   --ar=AR                  use archive tool AR [$ar_default]
280   --as=AS                  use assembler AS [$as_default]
281   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
282   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
283   --cc=CC                  use C compiler CC [$cc_default]
284   --cxx=CXX                use C compiler CXX [$cxx_default]
285   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
286   --ld=LD                  use linker LD [$ld_default]
287   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
288   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
289   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
290   --host-cc=HOSTCC         use host C compiler HOSTCC
291   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
292   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
293   --host-ld=HOSTLD         use host linker HOSTLD
294   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
295   --host-libs=HLIBS        use libs HLIBS when linking for host
296   --host-os=OS             compiler host OS [$target_os]
297   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
298   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
299   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
300   --extra-libs=ELIBS       add ELIBS [$ELIBS]
301   --extra-version=STRING   version string suffix []
302   --optflags=OPTFLAGS      override optimization-related compiler flags
303   --build-suffix=SUFFIX    library name suffix []
304   --enable-pic             build position-independent code
305   --enable-thumb           compile for Thumb instruction set
306   --enable-lto             use link-time optimization
307
308 Advanced options (experts only):
309   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
310   --disable-symver         disable symbol versioning
311   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
312   --disable-safe-bitstream-reader
313                            disable buffer boundary checking in bitreaders
314                            (faster, but may crash)
315   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
316   --enable-sram            allow use of on-chip SRAM
317
318 Optimization options (experts only):
319   --disable-asm            disable all assembler optimizations
320   --disable-altivec        disable AltiVec optimizations
321   --disable-amd3dnow       disable 3DNow! optimizations
322   --disable-amd3dnowext    disable 3DNow! extended optimizations
323   --disable-mmx            disable MMX optimizations
324   --disable-mmxext         disable MMXEXT optimizations
325   --disable-sse            disable SSE optimizations
326   --disable-sse2           disable SSE2 optimizations
327   --disable-sse3           disable SSE3 optimizations
328   --disable-ssse3          disable SSSE3 optimizations
329   --disable-sse4           disable SSE4 optimizations
330   --disable-sse42          disable SSE4.2 optimizations
331   --disable-avx            disable AVX optimizations
332   --disable-xop            disable XOP optimizations
333   --disable-fma3           disable FMA3 optimizations
334   --disable-fma4           disable FMA4 optimizations
335   --disable-avx2           disable AVX2 optimizations
336   --disable-armv5te        disable armv5te optimizations
337   --disable-armv6          disable armv6 optimizations
338   --disable-armv6t2        disable armv6t2 optimizations
339   --disable-vfp            disable VFP optimizations
340   --disable-neon           disable NEON optimizations
341   --disable-inline-asm     disable use of inline assembler
342   --disable-yasm           disable use of yasm assembler
343   --disable-mips32r2       disable MIPS32R2 optimizations
344   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
345   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
346   --disable-mipsfpu        disable floating point MIPS optimizations
347   --disable-fast-unaligned consider unaligned accesses slow
348
349 Developer options (useful when working on FFmpeg itself):
350   --disable-debug          disable debugging symbols
351   --enable-debug=LEVEL     set the debug level [$debuglevel]
352   --disable-optimizations  disable compiler optimizations
353   --enable-extra-warnings  enable more compiler warnings
354   --disable-stripping      disable stripping of executables and shared libraries
355   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
356                            2 causes a slowdown at runtime.
357   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
358   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
359                            leaks and errors, using the specified valgrind binary.
360                            Cannot be combined with --target-exec
361   --enable-ftrapv          Trap arithmetic overflows
362   --samples=PATH           location of test samples for FATE, if not set use
363                            \$FATE_SAMPLES at make invocation time.
364   --enable-neon-clobber-test check NEON registers for clobbering (should be
365                            used only for debugging purposes)
366   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
367                            should be used only for debugging purposes)
368   --enable-random          randomly enable/disable components
369   --disable-random
370   --enable-random=LIST     randomly enable/disable specific components or
371   --disable-random=LIST    component groups. LIST is a comma-separated list
372                            of NAME[:PROB] entries where NAME is a component
373                            (group) and PROB the probability associated with
374                            NAME (default 0.5).
375   --random-seed=VALUE      seed value for --enable/disable-random
376
377 NOTE: Object files are built at the place where configure is launched.
378 EOF
379   exit 0
380 }
381
382 quotes='""'
383
384 log(){
385     echo "$@" >> $logfile
386 }
387
388 log_file(){
389     log BEGIN $1
390     pr -n -t $1 >> $logfile
391     log END $1
392 }
393
394 echolog(){
395     log "$@"
396     echo "$@"
397 }
398
399 warn(){
400     log "WARNING: $*"
401     WARNINGS="${WARNINGS}WARNING: $*\n"
402 }
403
404 die(){
405     echolog "$@"
406     cat <<EOF
407
408 If you think configure made a mistake, make sure you are using the latest
409 version from Git.  If the latest version fails, report the problem to the
410 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
411 EOF
412     if disabled logging; then
413         cat <<EOF
414 Rerun configure with logging enabled (do not use --disable-logging), and
415 include the log this produces with your report.
416 EOF
417     else
418         cat <<EOF
419 Include the log file "$logfile" produced by configure as this will help
420 solve the problem.
421 EOF
422     fi
423     exit 1
424 }
425
426 # Avoid locale weirdness, besides we really just want to translate ASCII.
427 toupper(){
428     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
429 }
430
431 tolower(){
432     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
433 }
434
435 c_escape(){
436     echo "$*" | sed 's/["\\]/\\\0/g'
437 }
438
439 sh_quote(){
440     v=$(echo "$1" | sed "s/'/'\\\\''/g")
441     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
442     echo "$v"
443 }
444
445 cleanws(){
446     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
447 }
448
449 filter(){
450     pat=$1
451     shift
452     for v; do
453         eval "case $v in $pat) echo $v ;; esac"
454     done
455 }
456
457 filter_out(){
458     pat=$1
459     shift
460     for v; do
461         eval "case $v in $pat) ;; *) echo $v ;; esac"
462     done
463 }
464
465 map(){
466     m=$1
467     shift
468     for v; do eval $m; done
469 }
470
471 add_suffix(){
472     suffix=$1
473     shift
474     for v; do echo ${v}${suffix}; done
475 }
476
477 set_all(){
478     value=$1
479     shift
480     for var in $*; do
481         eval $var=$value
482     done
483 }
484
485 set_weak(){
486     value=$1
487     shift
488     for var; do
489         eval : \${$var:=$value}
490     done
491 }
492
493 sanitize_var_name(){
494     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
495 }
496
497 set_safe(){
498     var=$1
499     shift
500     eval $(sanitize_var_name "$var")='$*'
501 }
502
503 get_safe(){
504     eval echo \$$(sanitize_var_name "$1")
505 }
506
507 pushvar(){
508     for pvar in $*; do
509         eval level=\${${pvar}_level:=0}
510         eval ${pvar}_${level}="\$$pvar"
511         eval ${pvar}_level=$(($level+1))
512     done
513 }
514
515 popvar(){
516     for pvar in $*; do
517         eval level=\${${pvar}_level:-0}
518         test $level = 0 && continue
519         eval level=$(($level-1))
520         eval $pvar="\${${pvar}_${level}}"
521         eval ${pvar}_level=$level
522         eval unset ${pvar}_${level}
523     done
524 }
525
526 enable(){
527     set_all yes $*
528 }
529
530 disable(){
531     set_all no $*
532 }
533
534 enable_weak(){
535     set_weak yes $*
536 }
537
538 disable_weak(){
539     set_weak no $*
540 }
541
542 enable_safe(){
543     for var; do
544         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
545     done
546 }
547
548 disable_safe(){
549     for var; do
550         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
551     done
552 }
553
554 do_enable_deep(){
555     for var; do
556         enabled $var && continue
557         eval sel="\$${var}_select"
558         eval sgs="\$${var}_suggest"
559         pushvar var sgs
560         enable_deep $sel
561         popvar sgs
562         enable_deep_weak $sgs
563         popvar var
564     done
565 }
566
567 enable_deep(){
568     do_enable_deep $*
569     enable $*
570 }
571
572 enable_deep_weak(){
573     for var; do
574         disabled $var && continue
575         pushvar var
576         do_enable_deep $var
577         popvar var
578         enable_weak $var
579     done
580 }
581
582 enabled(){
583     test "${1#!}" = "$1" && op== || op=!=
584     eval test "x\$${1#!}" $op "xyes"
585 }
586
587 disabled(){
588     test "${1#!}" = "$1" && op== || op=!=
589     eval test "x\$${1#!}" $op "xno"
590 }
591
592 enabled_all(){
593     for opt; do
594         enabled $opt || return 1
595     done
596 }
597
598 disabled_all(){
599     for opt; do
600         disabled $opt || return 1
601     done
602 }
603
604 enabled_any(){
605     for opt; do
606         enabled $opt && return 0
607     done
608 }
609
610 disabled_any(){
611     for opt; do
612         disabled $opt && return 0
613     done
614     return 1
615 }
616
617 set_default(){
618     for opt; do
619         eval : \${$opt:=\$${opt}_default}
620     done
621 }
622
623 is_in(){
624     value=$1
625     shift
626     for var in $*; do
627         [ $var = $value ] && return 0
628     done
629     return 1
630 }
631
632 do_check_deps(){
633     for cfg; do
634         cfg="${cfg#!}"
635         enabled ${cfg}_checking && die "Circular dependency for $cfg."
636         disabled ${cfg}_checking && continue
637         enable ${cfg}_checking
638         append allopts $cfg
639
640         eval dep_all="\$${cfg}_deps"
641         eval dep_any="\$${cfg}_deps_any"
642         eval dep_sel="\$${cfg}_select"
643         eval dep_sgs="\$${cfg}_suggest"
644         eval dep_ifa="\$${cfg}_if"
645         eval dep_ifn="\$${cfg}_if_any"
646
647         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
648         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
649         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
650
651         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
652         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
653         enabled_all  $dep_all || disable $cfg
654         enabled_any  $dep_any || disable $cfg
655         disabled_any $dep_sel && disable $cfg
656
657         if enabled $cfg; then
658             enable_deep $dep_sel
659             enable_deep_weak $dep_sgs
660         fi
661
662         disable ${cfg}_checking
663     done
664 }
665
666 check_deps(){
667     unset allopts
668
669     do_check_deps "$@"
670
671     for cfg in $allopts; do
672         enabled $cfg || continue
673         eval dep_extralibs="\$${cfg}_extralibs"
674         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
675     done
676 }
677
678 print_config(){
679     pfx=$1
680     files=$2
681     shift 2
682     map 'eval echo "$v \${$v:-no}"' "$@" |
683     awk "BEGIN { split(\"$files\", files) }
684         {
685             c = \"$pfx\" toupper(\$1);
686             v = \$2;
687             sub(/yes/, 1, v);
688             sub(/no/,  0, v);
689             for (f in files) {
690                 file = files[f];
691                 if (file ~ /\\.h\$/) {
692                     printf(\"#define %s %d\\n\", c, v) >>file;
693                 } else if (file ~ /\\.asm\$/) {
694                     printf(\"%%define %s %d\\n\", c, v) >>file;
695                 } else if (file ~ /\\.mak\$/) {
696                     n = -v ? \"\" : \"!\";
697                     printf(\"%s%s=yes\\n\", n, c) >>file;
698                 } else if (file ~ /\\.texi\$/) {
699                     pre = -v ? \"\" : \"@c \";
700                     yesno = \$2;
701                     c2 = tolower(c);
702                     gsub(/_/, \"-\", c2);
703                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
704                 }
705             }
706         }"
707 }
708
709 print_enabled(){
710     suf=$1
711     shift
712     for v; do
713         enabled $v && printf "%s\n" ${v%$suf};
714     done
715 }
716
717 append(){
718     var=$1
719     shift
720     eval "$var=\"\$$var $*\""
721 }
722
723 prepend(){
724     var=$1
725     shift
726     eval "$var=\"$* \$$var\""
727 }
728
729 unique(){
730     var=$1
731     uniq_list=""
732     for tok in $(eval echo \$$var); do
733         uniq_list="$(filter_out $tok $uniq_list) $tok"
734     done
735     eval "$var=\"${uniq_list}\""
736 }
737
738 add_cppflags(){
739     append CPPFLAGS "$@"
740 }
741
742 add_cflags(){
743     append CFLAGS $($cflags_filter "$@")
744 }
745
746 add_cxxflags(){
747     append CXXFLAGS $($cflags_filter "$@")
748 }
749
750 add_asflags(){
751     append ASFLAGS $($asflags_filter "$@")
752 }
753
754 add_ldflags(){
755     append LDFLAGS $($ldflags_filter "$@")
756 }
757
758 add_stripflags(){
759     append ASMSTRIPFLAGS "$@"
760 }
761
762 add_extralibs(){
763     prepend extralibs $($ldflags_filter "$@")
764 }
765
766 add_host_cppflags(){
767     append host_cppflags "$@"
768 }
769
770 add_host_cflags(){
771     append host_cflags $($host_cflags_filter "$@")
772 }
773
774 add_host_ldflags(){
775     append host_ldflags $($host_ldflags_filter "$@")
776 }
777
778 add_compat(){
779     append compat_objs $1
780     shift
781     map 'add_cppflags -D$v' "$@"
782 }
783
784 check_cmd(){
785     log "$@"
786     "$@" >> $logfile 2>&1
787 }
788
789 check_stat(){
790     log check_stat "$@"
791     stat "$1" >> $logfile 2>&1
792 }
793
794 cc_o(){
795     eval printf '%s\\n' $CC_O
796 }
797
798 cc_e(){
799     eval printf '%s\\n' $CC_E
800 }
801
802 check_cc(){
803     log check_cc "$@"
804     cat > $TMPC
805     log_file $TMPC
806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
807 }
808
809 check_cxx(){
810     log check_cxx "$@"
811     cat > $TMPCPP
812     log_file $TMPCPP
813     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
814 }
815
816 check_oc(){
817     log check_oc "$@"
818     cat > $TMPM
819     log_file $TMPM
820     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
821 }
822
823 check_cpp(){
824     log check_cpp "$@"
825     cat > $TMPC
826     log_file $TMPC
827     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
828 }
829
830 as_o(){
831     eval printf '%s\\n' $AS_O
832 }
833
834 check_as(){
835     log check_as "$@"
836     cat > $TMPS
837     log_file $TMPS
838     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
839 }
840
841 check_inline_asm(){
842     log check_inline_asm "$@"
843     name="$1"
844     code="$2"
845     shift 2
846     disable $name
847     check_cc "$@" <<EOF && enable $name
848 void foo(void){ __asm__ volatile($code); }
849 EOF
850 }
851
852 check_insn(){
853     log check_insn "$@"
854     check_inline_asm ${1}_inline "\"$2\""
855     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
856 }
857
858 check_yasm(){
859     log check_yasm "$@"
860     echo "$1" > $TMPS
861     log_file $TMPS
862     shift 1
863     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
864 }
865
866 ld_o(){
867     eval printf '%s\\n' $LD_O
868 }
869
870 check_ld(){
871     log check_ld "$@"
872     type=$1
873     shift 1
874     flags=$(filter_out '-l*|*.so' $@)
875     libs=$(filter '-l*|*.so' $@)
876     check_$type $($cflags_filter $flags) || return
877     flags=$($ldflags_filter $flags)
878     libs=$($ldflags_filter $libs)
879     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
880 }
881
882 print_include(){
883     hdr=$1
884     test "${hdr%.h}" = "${hdr}" &&
885         echo "#include $hdr"    ||
886         echo "#include <$hdr>"
887 }
888
889 check_code(){
890     log check_code "$@"
891     check=$1
892     headers=$2
893     code=$3
894     shift 3
895     {
896         for hdr in $headers; do
897             print_include $hdr
898         done
899         echo "int main(void) { $code; return 0; }"
900     } | check_$check "$@"
901 }
902
903 check_cppflags(){
904     log check_cppflags "$@"
905     check_cc "$@" <<EOF && append CPPFLAGS "$@"
906 int x;
907 EOF
908 }
909
910 test_cflags(){
911     log test_cflags "$@"
912     set -- $($cflags_filter "$@")
913     check_cc "$@" <<EOF
914 int x;
915 EOF
916 }
917
918 check_cflags(){
919     log check_cflags "$@"
920     test_cflags "$@" && add_cflags "$@"
921 }
922
923 check_cxxflags(){
924     log check_cxxflags "$@"
925     set -- $($cflags_filter "$@")
926     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
927 int x;
928 EOF
929 }
930
931 test_ldflags(){
932     log test_ldflags "$@"
933     check_ld "cc" "$@" <<EOF
934 int main(void){ return 0; }
935 EOF
936 }
937
938 check_ldflags(){
939     log check_ldflags "$@"
940     test_ldflags "$@" && add_ldflags "$@"
941 }
942
943 test_stripflags(){
944     log test_stripflags "$@"
945     # call check_cc to get a fresh TMPO
946     check_cc <<EOF
947 int main(void) { return 0; }
948 EOF
949     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
950 }
951
952 check_stripflags(){
953     log check_stripflags "$@"
954     test_stripflags "$@" && add_stripflags "$@"
955 }
956
957 check_header(){
958     log check_header "$@"
959     header=$1
960     shift
961     disable_safe $header
962     check_cpp "$@" <<EOF && enable_safe $header
963 #include <$header>
964 int x;
965 EOF
966 }
967
968 check_header_oc(){
969     log check_header_oc "$@"
970     rm -f -- "$TMPO"
971     header=$1
972     shift
973     disable_safe $header
974     {
975        echo "#include <$header>"
976        echo "int main(void) { return 0; }"
977     } | check_oc && check_stat "$TMPO" && enable_safe $headers
978 }
979
980 check_func(){
981     log check_func "$@"
982     func=$1
983     shift
984     disable $func
985     check_ld "cc" "$@" <<EOF && enable $func
986 extern int $func();
987 int main(void){ $func(); }
988 EOF
989 }
990
991 check_mathfunc(){
992     log check_mathfunc "$@"
993     func=$1
994     narg=$2
995     shift 2
996     test $narg = 2 && args="f, g" || args="f"
997     disable $func
998     check_ld "cc" "$@" <<EOF && enable $func
999 #include <math.h>
1000 float foo(float f, float g) { return $func($args); }
1001 int main(void){ return (int) foo; }
1002 EOF
1003 }
1004
1005 check_func_headers(){
1006     log check_func_headers "$@"
1007     headers=$1
1008     funcs=$2
1009     shift 2
1010     {
1011         for hdr in $headers; do
1012             print_include $hdr
1013         done
1014         for func in $funcs; do
1015             echo "long check_$func(void) { return (long) $func; }"
1016         done
1017         echo "int main(void) { return 0; }"
1018     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1019 }
1020
1021 check_class_headers_cpp(){
1022     log check_class_headers_cpp "$@"
1023     headers=$1
1024     classes=$2
1025     shift 2
1026     {
1027         for hdr in $headers; do
1028             echo "#include <$hdr>"
1029         done
1030         echo "int main(void) { "
1031         i=1
1032         for class in $classes; do
1033             echo "$class obj$i;"
1034             i=$(expr $i + 1)
1035         done
1036         echo "return 0; }"
1037     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1038 }
1039
1040 check_cpp_condition(){
1041     log check_cpp_condition "$@"
1042     header=$1
1043     condition=$2
1044     shift 2
1045     check_cpp "$@" <<EOF
1046 #include <$header>
1047 #if !($condition)
1048 #error "unsatisfied condition: $condition"
1049 #endif
1050 EOF
1051 }
1052
1053 check_lib(){
1054     log check_lib "$@"
1055     header="$1"
1056     func="$2"
1057     shift 2
1058     check_header $header && check_func $func "$@" && add_extralibs "$@"
1059 }
1060
1061 check_lib2(){
1062     log check_lib2 "$@"
1063     headers="$1"
1064     funcs="$2"
1065     shift 2
1066     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1067 }
1068
1069 check_lib_cpp(){
1070     log check_lib_cpp "$@"
1071     headers="$1"
1072     classes="$2"
1073     shift 2
1074     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1075 }
1076
1077 check_pkg_config(){
1078     log check_pkg_config "$@"
1079     pkgandversion="$1"
1080     pkg="${1%% *}"
1081     headers="$2"
1082     funcs="$3"
1083     shift 3
1084     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1085     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1086     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1087     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1088         set_safe ${pkg}_cflags $pkg_cflags   &&
1089         set_safe ${pkg}_libs   $pkg_libs
1090 }
1091
1092 check_exec(){
1093     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1094 }
1095
1096 check_exec_crash(){
1097     code=$(cat)
1098
1099     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1100     # are safe but may not be available everywhere.  Thus we use
1101     # raise(SIGTERM) instead.  The check is run in a subshell so we
1102     # can redirect the "Terminated" message from the shell.  SIGBUS
1103     # is not defined by standard C so it is used conditionally.
1104
1105     (check_exec "$@") >> $logfile 2>&1 <<EOF
1106 #include <signal.h>
1107 static void sighandler(int sig){
1108     raise(SIGTERM);
1109 }
1110 int foo(void){
1111     $code
1112 }
1113 int (*func_ptr)(void) = foo;
1114 int main(void){
1115     signal(SIGILL, sighandler);
1116     signal(SIGFPE, sighandler);
1117     signal(SIGSEGV, sighandler);
1118 #ifdef SIGBUS
1119     signal(SIGBUS, sighandler);
1120 #endif
1121     return func_ptr();
1122 }
1123 EOF
1124 }
1125
1126 check_type(){
1127     log check_type "$@"
1128     headers=$1
1129     type=$2
1130     shift 2
1131     disable_safe "$type"
1132     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1133 }
1134
1135 check_struct(){
1136     log check_struct "$@"
1137     headers=$1
1138     struct=$2
1139     member=$3
1140     shift 3
1141     disable_safe "${struct}_${member}"
1142     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1143         enable_safe "${struct}_${member}"
1144 }
1145
1146 check_builtin(){
1147     log check_builtin "$@"
1148     name=$1
1149     headers=$2
1150     builtin=$3
1151     shift 3
1152     disable "$name"
1153     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1154 }
1155
1156 check_compile_assert(){
1157     log check_compile_assert "$@"
1158     name=$1
1159     headers=$2
1160     condition=$3
1161     shift 3
1162     disable "$name"
1163     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1164 }
1165
1166 require(){
1167     name="$1"
1168     header="$2"
1169     func="$3"
1170     shift 3
1171     check_lib $header $func "$@" || die "ERROR: $name not found"
1172 }
1173
1174 require2(){
1175     name="$1"
1176     headers="$2"
1177     func="$3"
1178     shift 3
1179     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1180 }
1181
1182 require_cpp(){
1183     name="$1"
1184     headers="$2"
1185     classes="$3"
1186     shift 3
1187     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require_pkg_config(){
1191     pkg="$1"
1192     check_pkg_config "$@" || die "ERROR: $pkg not found"
1193     add_cflags    $(get_safe ${pkg}_cflags)
1194     add_extralibs $(get_safe ${pkg}_libs)
1195 }
1196
1197 require_libfreetype(){
1198     log require_libfreetype "$@"
1199     pkg="freetype2"
1200     check_cmd $pkg_config --exists --print-errors $pkg \
1201       || die "ERROR: $pkg not found"
1202     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1203     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1204     {
1205         echo "#include <ft2build.h>"
1206         echo "#include FT_FREETYPE_H"
1207         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1208         echo "int main(void) { return 0; }"
1209     } | check_ld "cc" $pkg_cflags $pkg_libs \
1210       && set_safe ${pkg}_cflags $pkg_cflags \
1211       && set_safe ${pkg}_libs   $pkg_libs \
1212       || die "ERROR: $pkg not found"
1213     add_cflags    $(get_safe ${pkg}_cflags)
1214     add_extralibs $(get_safe ${pkg}_libs)
1215 }
1216
1217 hostcc_e(){
1218     eval printf '%s\\n' $HOSTCC_E
1219 }
1220
1221 hostcc_o(){
1222     eval printf '%s\\n' $HOSTCC_O
1223 }
1224
1225 check_host_cc(){
1226     log check_host_cc "$@"
1227     cat > $TMPC
1228     log_file $TMPC
1229     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1230 }
1231
1232 check_host_cpp(){
1233     log check_host_cpp "$@"
1234     cat > $TMPC
1235     log_file $TMPC
1236     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1237 }
1238
1239 check_host_cppflags(){
1240     log check_host_cppflags "$@"
1241     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1242 int x;
1243 EOF
1244 }
1245
1246 check_host_cflags(){
1247     log check_host_cflags "$@"
1248     set -- $($host_cflags_filter "$@")
1249     check_host_cc "$@" <<EOF && append host_cflags "$@"
1250 int x;
1251 EOF
1252 }
1253
1254 check_host_cpp_condition(){
1255     log check_host_cpp_condition "$@"
1256     header=$1
1257     condition=$2
1258     shift 2
1259     check_host_cpp "$@" <<EOF
1260 #include <$header>
1261 #if !($condition)
1262 #error "unsatisfied condition: $condition"
1263 #endif
1264 EOF
1265 }
1266
1267 apply(){
1268     file=$1
1269     shift
1270     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1271 }
1272
1273 cp_if_changed(){
1274     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1275     mkdir -p "$(dirname $2)"
1276     $cp_f "$1" "$2"
1277 }
1278
1279 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1280 # system-dependent things.
1281
1282 COMPONENT_LIST="
1283     bsfs
1284     decoders
1285     demuxers
1286     encoders
1287     filters
1288     hwaccels
1289     indevs
1290     muxers
1291     outdevs
1292     parsers
1293     protocols
1294 "
1295
1296 EXAMPLE_LIST="
1297     avio_reading_example
1298     decoding_encoding_example
1299     demuxing_decoding_example
1300     filter_audio_example
1301     filtering_audio_example
1302     filtering_video_example
1303     metadata_example
1304     muxing_example
1305     remuxing_example
1306     resampling_audio_example
1307     scaling_video_example
1308     transcode_aac_example
1309     transcoding_example
1310 "
1311
1312 EXTERNAL_LIBRARY_LIST="
1313     avisynth
1314     bzlib
1315     crystalhd
1316     decklink
1317     frei0r
1318     gnutls
1319     iconv
1320     ladspa
1321     libaacplus
1322     libass
1323     libbluray
1324     libbs2b
1325     libcaca
1326     libcdio
1327     libcelt
1328     libdc1394
1329     libfaac
1330     libfdk_aac
1331     libflite
1332     libfontconfig
1333     libfreetype
1334     libgme
1335     libgsm
1336     libiec61883
1337     libilbc
1338     libmodplug
1339     libmp3lame
1340     libnut
1341     libopencore_amrnb
1342     libopencore_amrwb
1343     libopencv
1344     libopenjpeg
1345     libopus
1346     libpulse
1347     libquvi
1348     librtmp
1349     libschroedinger
1350     libshine
1351     libsoxr
1352     libspeex
1353     libssh
1354     libstagefright_h264
1355     libtheora
1356     libtwolame
1357     libutvideo
1358     libv4l2
1359     libvidstab
1360     libvo_aacenc
1361     libvo_amrwbenc
1362     libvorbis
1363     libvpx
1364     libwavpack
1365     libwebp
1366     libx264
1367     libx265
1368     libxavs
1369     libxvid
1370     libzmq
1371     libzvbi
1372     openal
1373     opencl
1374     opengl
1375     openssl
1376     x11grab
1377     xlib
1378     zlib
1379 "
1380
1381 DOCUMENT_LIST="
1382     doc
1383     htmlpages
1384     manpages
1385     podpages
1386     txtpages
1387 "
1388
1389 FEATURE_LIST="
1390     ftrapv
1391     gray
1392     hardcoded_tables
1393     runtime_cpudetect
1394     safe_bitstream_reader
1395     shared
1396     small
1397     sram
1398     static
1399     swscale_alpha
1400 "
1401
1402 HWACCEL_LIST="
1403     dxva2
1404     vaapi
1405     vda
1406     vdpau
1407     xvmc
1408 "
1409
1410 LIBRARY_LIST="
1411     avcodec
1412     avdevice
1413     avfilter
1414     avformat
1415     avresample
1416     avutil
1417     postproc
1418     swresample
1419     swscale
1420 "
1421
1422 LICENSE_LIST="
1423     gpl
1424     nonfree
1425     version3
1426 "
1427
1428 PROGRAM_LIST="
1429     ffplay
1430     ffprobe
1431     ffserver
1432     ffmpeg
1433 "
1434
1435 SUBSYSTEM_LIST="
1436     dct
1437     dwt
1438     error_resilience
1439     fast_unaligned
1440     fft
1441     lsp
1442     lzo
1443     mdct
1444     network
1445     rdft
1446 "
1447
1448 CONFIG_LIST="
1449     $COMPONENT_LIST
1450     $DOCUMENT_LIST
1451     $EXAMPLE_LIST
1452     $EXTERNAL_LIBRARY_LIST
1453     $FEATURE_LIST
1454     $HWACCEL_LIST
1455     $LICENSE_LIST
1456     $LIBRARY_LIST
1457     $PROGRAM_LIST
1458     $SUBSYSTEM_LIST
1459     fontconfig
1460     incompatible_libav_abi
1461     memalign_hack
1462     memory_poisoning
1463     neon_clobber_test
1464     pic
1465     pod2man
1466     raise_major
1467     thumb
1468     xmm_clobber_test
1469 "
1470
1471 THREADS_LIST="
1472     pthreads
1473     os2threads
1474     w32threads
1475 "
1476
1477 ATOMICS_LIST="
1478     atomics_gcc
1479     atomics_suncc
1480     atomics_win32
1481 "
1482
1483 ARCH_LIST="
1484     aarch64
1485     alpha
1486     arm
1487     avr32
1488     avr32_ap
1489     avr32_uc
1490     bfin
1491     ia64
1492     m68k
1493     mips
1494     mips64
1495     parisc
1496     ppc
1497     ppc64
1498     s390
1499     sh4
1500     sparc
1501     sparc64
1502     tilegx
1503     tilepro
1504     tomi
1505     x86
1506     x86_32
1507     x86_64
1508 "
1509
1510 ARCH_EXT_LIST_ARM="
1511     armv5te
1512     armv6
1513     armv6t2
1514     armv8
1515     neon
1516     vfp
1517     vfpv3
1518 "
1519
1520 ARCH_EXT_LIST_MIPS="
1521     mipsfpu
1522     mips32r2
1523     mipsdspr1
1524     mipsdspr2
1525 "
1526
1527 ARCH_EXT_LIST_X86_SIMD="
1528     amd3dnow
1529     amd3dnowext
1530     avx
1531     avx2
1532     fma3
1533     fma4
1534     mmx
1535     mmxext
1536     sse
1537     sse2
1538     sse3
1539     sse4
1540     sse42
1541     ssse3
1542     xop
1543 "
1544
1545 ARCH_EXT_LIST_PPC="
1546     altivec
1547     dcbzl
1548     ldbrx
1549     ppc4xx
1550 "
1551
1552 ARCH_EXT_LIST_X86="
1553     $ARCH_EXT_LIST_X86_SIMD
1554     cpunop
1555     i686
1556 "
1557
1558 ARCH_EXT_LIST="
1559     $ARCH_EXT_LIST_ARM
1560     $ARCH_EXT_LIST_PPC
1561     $ARCH_EXT_LIST_X86
1562     $ARCH_EXT_LIST_MIPS
1563     loongson
1564 "
1565
1566 ARCH_FEATURES="
1567     aligned_stack
1568     fast_64bit
1569     fast_clz
1570     fast_cmov
1571     local_aligned_8
1572     local_aligned_16
1573     local_aligned_32
1574 "
1575
1576 BUILTIN_LIST="
1577     atomic_cas_ptr
1578     machine_rw_barrier
1579     MemoryBarrier
1580     mm_empty
1581     rdtsc
1582     sarestart
1583     sync_val_compare_and_swap
1584 "
1585 HAVE_LIST_CMDLINE="
1586     inline_asm
1587     symver
1588     yasm
1589 "
1590
1591 HAVE_LIST_PUB="
1592     bigendian
1593     fast_unaligned
1594     incompatible_libav_abi
1595 "
1596
1597 HEADERS_LIST="
1598     alsa_asoundlib_h
1599     altivec_h
1600     arpa_inet_h
1601     asm_types_h
1602     cdio_paranoia_h
1603     cdio_paranoia_paranoia_h
1604     CL_cl_h
1605     dev_bktr_ioctl_bt848_h
1606     dev_bktr_ioctl_meteor_h
1607     dev_ic_bt8xx_h
1608     dev_video_bktr_ioctl_bt848_h
1609     dev_video_meteor_ioctl_meteor_h
1610     direct_h
1611     dlfcn_h
1612     dxva_h
1613     ES2_gl_h
1614     gsm_h
1615     io_h
1616     mach_mach_time_h
1617     machine_ioctl_bt848_h
1618     machine_ioctl_meteor_h
1619     malloc_h
1620     openjpeg_1_5_openjpeg_h
1621     OpenGL_gl3_h
1622     poll_h
1623     sndio_h
1624     soundcard_h
1625     sys_mman_h
1626     sys_param_h
1627     sys_resource_h
1628     sys_select_h
1629     sys_soundcard_h
1630     sys_time_h
1631     sys_un_h
1632     sys_videoio_h
1633     termios_h
1634     unistd_h
1635     windows_h
1636     winsock2_h
1637 "
1638
1639 MATH_FUNCS="
1640     atanf
1641     atan2f
1642     cbrt
1643     cbrtf
1644     cosf
1645     exp2
1646     exp2f
1647     expf
1648     isinf
1649     isnan
1650     ldexpf
1651     llrint
1652     llrintf
1653     log2
1654     log2f
1655     log10f
1656     lrint
1657     lrintf
1658     powf
1659     rint
1660     round
1661     roundf
1662     sinf
1663     trunc
1664     truncf
1665 "
1666
1667 SYSTEM_FUNCS="
1668     access
1669     aligned_malloc
1670     clock_gettime
1671     closesocket
1672     CommandLineToArgvW
1673     CoTaskMemFree
1674     CryptGenRandom
1675     dlopen
1676     fcntl
1677     flt_lim
1678     fork
1679     getaddrinfo
1680     gethrtime
1681     getopt
1682     GetProcessAffinityMask
1683     GetProcessMemoryInfo
1684     GetProcessTimes
1685     getrusage
1686     getservbyport
1687     GetSystemTimeAsFileTime
1688     gettimeofday
1689     glob
1690     glXGetProcAddress
1691     inet_aton
1692     isatty
1693     jack_port_get_latency_range
1694     kbhit
1695     localtime_r
1696     lzo1x_999_compress
1697     mach_absolute_time
1698     MapViewOfFile
1699     memalign
1700     mkstemp
1701     mmap
1702     mprotect
1703     nanosleep
1704     PeekNamedPipe
1705     posix_memalign
1706     pthread_cancel
1707     sched_getaffinity
1708     SetConsoleTextAttribute
1709     setmode
1710     setrlimit
1711     Sleep
1712     strerror_r
1713     sysconf
1714     sysctl
1715     usleep
1716     VirtualAlloc
1717     wglGetProcAddress
1718 "
1719
1720 TOOLCHAIN_FEATURES="
1721     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     huffyuvdsp
1809     intrax8
1810     lgplv3
1811     llviddsp
1812     lpc
1813     mpegaudio
1814     mpegaudiodsp
1815     mpegvideo
1816     mpegvideoenc
1817     nettle
1818     rangecoder
1819     riffdec
1820     riffenc
1821     rtpdec
1822     rtpenc_chain
1823     sinewin
1824     tpeldsp
1825     videodsp
1826     vp3dsp
1827 "
1828
1829 CMDLINE_SELECT="
1830     $ARCH_EXT_LIST
1831     $CONFIG_LIST
1832     $HAVE_LIST_CMDLINE
1833     $THREADS_LIST
1834     asm
1835     cross_compile
1836     debug
1837     extra_warnings
1838     logging
1839     lto
1840     optimizations
1841     rpath
1842     stripping
1843 "
1844
1845 PATHS_LIST="
1846     bindir
1847     datadir
1848     docdir
1849     incdir
1850     libdir
1851     mandir
1852     prefix
1853     shlibdir
1854 "
1855
1856 CMDLINE_SET="
1857     $PATHS_LIST
1858     ar
1859     arch
1860     as
1861     assert_level
1862     build_suffix
1863     cc
1864     cpu
1865     cross_prefix
1866     cxx
1867     dep_cc
1868     extra_version
1869     gas
1870     host_cc
1871     host_cflags
1872     host_ld
1873     host_ldflags
1874     host_libs
1875     host_os
1876     install
1877     ld
1878     logfile
1879     malloc_prefix
1880     nm
1881     optflags
1882     pkg_config
1883     pkg_config_flags
1884     progs_suffix
1885     random_seed
1886     ranlib
1887     samples
1888     strip
1889     sysinclude
1890     sysroot
1891     target_exec
1892     target_os
1893     target_path
1894     target_samples
1895     tempprefix
1896     toolchain
1897     valgrind
1898     yasmexe
1899 "
1900
1901 CMDLINE_APPEND="
1902     extra_cflags
1903     extra_cxxflags
1904     host_cppflags
1905 "
1906
1907 # code dependency declarations
1908
1909 # architecture extensions
1910
1911 armv5te_deps="arm"
1912 armv6_deps="arm"
1913 armv6t2_deps="arm"
1914 armv8_deps="aarch64"
1915 neon_deps_any="aarch64 arm"
1916 vfp_deps_any="aarch64 arm"
1917 vfpv3_deps="vfp"
1918
1919 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1920
1921 mipsfpu_deps="mips"
1922 mips32r2_deps="mips"
1923 mipsdspr1_deps="mips"
1924 mipsdspr2_deps="mips"
1925
1926 altivec_deps="ppc"
1927 ppc4xx_deps="ppc"
1928
1929 cpunop_deps="i686"
1930 x86_64_select="i686"
1931 x86_64_suggest="fast_cmov"
1932
1933 amd3dnow_deps="mmx"
1934 amd3dnowext_deps="amd3dnow"
1935 i686_deps="x86"
1936 mmx_deps="x86"
1937 mmxext_deps="mmx"
1938 sse_deps="mmxext"
1939 sse2_deps="sse"
1940 sse3_deps="sse2"
1941 ssse3_deps="sse3"
1942 sse4_deps="ssse3"
1943 sse42_deps="sse4"
1944 avx_deps="sse42"
1945 xop_deps="avx"
1946 fma3_deps="avx"
1947 fma4_deps="avx"
1948 avx2_deps="avx"
1949
1950 mmx_external_deps="yasm"
1951 mmx_inline_deps="inline_asm"
1952 mmx_suggest="mmx_external mmx_inline"
1953
1954 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1955     eval dep=\$${ext}_deps
1956     eval ${ext}_external_deps='"${dep}_external"'
1957     eval ${ext}_inline_deps='"${dep}_inline"'
1958     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1959 done
1960
1961 aligned_stack_if_any="aarch64 ppc x86"
1962 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1963 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1964 fast_unaligned_if_any="aarch64 ppc x86"
1965
1966 need_memalign="altivec neon sse"
1967
1968 # system capabilities
1969
1970 symver_if_any="symver_asm_label symver_gnu_asm"
1971
1972 # threading support
1973 atomics_gcc_if="sync_val_compare_and_swap"
1974 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1975 atomics_win32_if="MemoryBarrier"
1976 atomics_native_if_any="$ATOMICS_LIST"
1977 w32threads_deps="atomics_native"
1978 threads_if_any="$THREADS_LIST"
1979
1980 # subsystems
1981 dct_select="rdft"
1982 error_resilience_select="dsputil"
1983 frame_thread_encoder_deps="encoders threads"
1984 mdct_select="fft"
1985 rdft_select="fft"
1986 mpegaudio_select="mpegaudiodsp"
1987 mpegaudiodsp_select="dct"
1988 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1989 mpegvideoenc_select="dsputil mpegvideo"
1990
1991 # decoders / encoders
1992 aac_decoder_select="mdct sinewin"
1993 aac_encoder_select="audio_frame_queue mdct sinewin"
1994 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1995 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1996 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
1997 ac3_encoder_select="mdct ac3dsp dsputil"
1998 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1999 aic_decoder_select="dsputil golomb"
2000 alac_encoder_select="lpc"
2001 als_decoder_select="dsputil"
2002 amrnb_decoder_select="lsp"
2003 amrwb_decoder_select="lsp"
2004 amv_decoder_select="sp5x_decoder exif"
2005 amv_encoder_select="aandcttables"
2006 ape_decoder_select="dsputil"
2007 asv1_decoder_select="dsputil"
2008 asv1_encoder_select="dsputil"
2009 asv2_decoder_select="dsputil"
2010 asv2_encoder_select="dsputil"
2011 atrac1_decoder_select="mdct sinewin"
2012 atrac3_decoder_select="mdct"
2013 atrac3p_decoder_select="mdct sinewin"
2014 avrn_decoder_select="exif"
2015 bink_decoder_select="dsputil hpeldsp"
2016 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2017 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2018 cavs_decoder_select="dsputil golomb h264chroma videodsp"
2019 cllc_decoder_select="dsputil"
2020 comfortnoise_encoder_select="lpc"
2021 cook_decoder_select="dsputil mdct sinewin"
2022 cscd_decoder_select="lzo"
2023 cscd_decoder_suggest="zlib"
2024 dca_decoder_select="mdct"
2025 dirac_decoder_select="dsputil dwt golomb videodsp"
2026 dnxhd_decoder_select="dsputil"
2027 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2028 dvvideo_decoder_select="dsputil"
2029 dvvideo_encoder_select="dsputil"
2030 dxa_decoder_select="zlib"
2031 eac3_decoder_select="ac3_decoder"
2032 eac3_encoder_select="ac3_encoder"
2033 eamad_decoder_select="aandcttables dsputil mpegvideo"
2034 eatgq_decoder_select="aandcttables"
2035 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2036 exr_decoder_select="zlib"
2037 ffv1_decoder_select="golomb rangecoder"
2038 ffv1_encoder_select="rangecoder"
2039 ffvhuff_decoder_select="huffyuv_decoder"
2040 ffvhuff_encoder_select="huffyuv_encoder"
2041 fic_decoder_select="golomb"
2042 flac_decoder_select="golomb"
2043 flac_encoder_select="dsputil golomb lpc"
2044 flashsv_decoder_select="zlib"
2045 flashsv_encoder_select="zlib"
2046 flashsv2_encoder_select="zlib"
2047 flashsv2_decoder_select="zlib"
2048 flv_decoder_select="h263_decoder"
2049 flv_encoder_select="h263_encoder"
2050 fourxm_decoder_select="dsputil"
2051 fraps_decoder_select="dsputil huffman"
2052 g2m_decoder_select="dsputil zlib"
2053 g729_decoder_select="dsputil"
2054 h261_decoder_select="error_resilience mpegvideo"
2055 h261_encoder_select="aandcttables mpegvideoenc"
2056 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2057 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2058 h263i_decoder_select="h263_decoder"
2059 h263p_encoder_select="h263_encoder"
2060 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2061 h264_decoder_suggest="error_resilience"
2062 hevc_decoder_select="cabac dsputil golomb videodsp"
2063 huffyuv_decoder_select="dsputil huffyuvdsp llviddsp"
2064 huffyuv_encoder_select="dsputil huffman llviddsp"
2065 iac_decoder_select="imc_decoder"
2066 imc_decoder_select="dsputil fft mdct sinewin"
2067 indeo3_decoder_select="hpeldsp"
2068 interplay_video_decoder_select="hpeldsp"
2069 jpegls_decoder_select="golomb mjpeg_decoder"
2070 jpegls_encoder_select="golomb"
2071 jv_decoder_select="dsputil"
2072 lagarith_decoder_select="huffyuvdsp"
2073 ljpeg_encoder_select="aandcttables mpegvideoenc"
2074 loco_decoder_select="golomb"
2075 mdec_decoder_select="dsputil error_resilience mpegvideo"
2076 metasound_decoder_select="lsp mdct sinewin"
2077 mimic_decoder_select="dsputil hpeldsp"
2078 mjpeg_decoder_select="dsputil hpeldsp exif"
2079 mjpeg_encoder_select="aandcttables mpegvideoenc"
2080 mjpegb_decoder_select="mjpeg_decoder"
2081 mlp_decoder_select="mlp_parser"
2082 motionpixels_decoder_select="dsputil"
2083 mp1_decoder_select="mpegaudio"
2084 mp1float_decoder_select="mpegaudio"
2085 mp2_decoder_select="mpegaudio"
2086 mp2float_decoder_select="mpegaudio"
2087 mp3_decoder_select="mpegaudio"
2088 mp3adu_decoder_select="mpegaudio"
2089 mp3adufloat_decoder_select="mpegaudio"
2090 mp3float_decoder_select="mpegaudio"
2091 mp3on4_decoder_select="mpegaudio"
2092 mp3on4float_decoder_select="mpegaudio"
2093 mpc7_decoder_select="dsputil mpegaudiodsp"
2094 mpc8_decoder_select="mpegaudiodsp"
2095 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2096 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2097 mpeg1video_decoder_select="error_resilience mpegvideo"
2098 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2099 mpeg2video_decoder_select="error_resilience mpegvideo"
2100 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2101 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2102 mpeg4_encoder_select="h263_encoder"
2103 msmpeg4v1_decoder_select="h263_decoder"
2104 msmpeg4v2_decoder_select="h263_decoder"
2105 msmpeg4v2_encoder_select="h263_encoder"
2106 msmpeg4v3_decoder_select="h263_decoder"
2107 msmpeg4v3_encoder_select="h263_encoder"
2108 mss2_decoder_select="error_resilience vc1_decoder"
2109 mxpeg_decoder_select="mjpeg_decoder"
2110 nellymoser_decoder_select="mdct sinewin"
2111 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2112 nuv_decoder_select="dsputil lzo"
2113 on2avc_decoder_select="mdct"
2114 opus_decoder_deps="swresample"
2115 png_decoder_select="zlib"
2116 png_encoder_select="dsputil zlib"
2117 prores_decoder_select="dsputil"
2118 prores_encoder_select="dsputil"
2119 qcelp_decoder_select="lsp"
2120 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2121 ra_144_encoder_select="audio_frame_queue lpc"
2122 ralf_decoder_select="golomb"
2123 rawvideo_decoder_select="dsputil"
2124 rtjpeg_decoder_select="dsputil"
2125 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2126 rv10_encoder_select="h263_encoder"
2127 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2128 rv20_encoder_select="h263_encoder"
2129 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2130 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2131 shorten_decoder_select="golomb"
2132 sipr_decoder_select="lsp"
2133 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2134 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2135 sonic_decoder_select="golomb rangecoder"
2136 sonic_encoder_select="golomb rangecoder"
2137 sonic_ls_encoder_select="golomb rangecoder"
2138 sp5x_decoder_select="mjpeg_decoder"
2139 svq1_decoder_select="hpeldsp"
2140 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2141 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2142 svq3_decoder_suggest="zlib"
2143 tak_decoder_select="dsputil"
2144 theora_decoder_select="vp3_decoder"
2145 thp_decoder_select="mjpeg_decoder"
2146 tiff_decoder_suggest="zlib"
2147 tiff_encoder_suggest="zlib"
2148 truehd_decoder_select="mlp_parser"
2149 truemotion2_decoder_select="dsputil"
2150 truespeech_decoder_select="dsputil"
2151 tscc_decoder_select="zlib"
2152 twinvq_decoder_select="mdct lsp sinewin"
2153 utvideo_decoder_select="dsputil"
2154 utvideo_encoder_select="dsputil huffman"
2155 vble_decoder_select="huffyuvdsp"
2156 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2157 vc1image_decoder_select="vc1_decoder"
2158 vorbis_decoder_select="mdct"
2159 vorbis_encoder_select="mdct"
2160 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2161 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2162 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2163 vp6a_decoder_select="vp6_decoder"
2164 vp6f_decoder_select="vp6_decoder"
2165 vp7_decoder_select="h264pred videodsp"
2166 vp8_decoder_select="h264pred videodsp"
2167 vp9_decoder_select="videodsp vp9_parser"
2168 webp_decoder_select="vp8_decoder"
2169 wmapro_decoder_select="mdct sinewin"
2170 wmav1_decoder_select="mdct sinewin"
2171 wmav1_encoder_select="mdct sinewin"
2172 wmav2_decoder_select="mdct sinewin"
2173 wmav2_encoder_select="mdct sinewin"
2174 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2175 wmv1_decoder_select="h263_decoder"
2176 wmv1_encoder_select="h263_encoder"
2177 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2178 wmv2_encoder_select="h263_encoder"
2179 wmv3_decoder_select="vc1_decoder"
2180 wmv3image_decoder_select="wmv3_decoder"
2181 zerocodec_decoder_select="zlib"
2182 zlib_decoder_select="zlib"
2183 zlib_encoder_select="zlib"
2184 zmbv_decoder_select="zlib"
2185 zmbv_encoder_select="zlib"
2186
2187 # hardware accelerators
2188 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2189 dxva2_deps="dxva2api_h"
2190 vaapi_deps="va_va_h"
2191 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2192 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2193 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2194 xvmc_deps="X11_extensions_XvMClib_h"
2195
2196 h263_vaapi_hwaccel_deps="vaapi"
2197 h263_vaapi_hwaccel_select="h263_decoder"
2198 h263_vdpau_hwaccel_deps="vdpau"
2199 h263_vdpau_hwaccel_select="h263_decoder"
2200 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2201 h264_dxva2_hwaccel_deps="dxva2"
2202 h264_dxva2_hwaccel_select="h264_decoder"
2203 h264_vaapi_hwaccel_deps="vaapi"
2204 h264_vaapi_hwaccel_select="h264_decoder"
2205 h264_vda_decoder_deps="vda"
2206 h264_vda_decoder_select="h264_decoder"
2207 h264_vda_hwaccel_deps="vda"
2208 h264_vda_hwaccel_select="h264_decoder"
2209 h264_vda_old_hwaccel_deps="vda"
2210 h264_vda_old_hwaccel_select="h264_decoder"
2211 h264_vdpau_decoder_deps="vdpau"
2212 h264_vdpau_decoder_select="h264_decoder"
2213 h264_vdpau_hwaccel_deps="vdpau"
2214 h264_vdpau_hwaccel_select="h264_decoder"
2215 mpeg_vdpau_decoder_deps="vdpau"
2216 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2217 mpeg_xvmc_hwaccel_deps="xvmc"
2218 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2219 mpeg1_vdpau_decoder_deps="vdpau"
2220 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2221 mpeg1_vdpau_hwaccel_deps="vdpau"
2222 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2223 mpeg1_xvmc_hwaccel_deps="xvmc"
2224 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2225 mpeg2_crystalhd_decoder_select="crystalhd"
2226 mpeg2_dxva2_hwaccel_deps="dxva2"
2227 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2228 mpeg2_vaapi_hwaccel_deps="vaapi"
2229 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2230 mpeg2_vdpau_hwaccel_deps="vdpau"
2231 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2232 mpeg2_xvmc_hwaccel_deps="xvmc"
2233 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2234 mpeg4_crystalhd_decoder_select="crystalhd"
2235 mpeg4_vaapi_hwaccel_deps="vaapi"
2236 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2237 mpeg4_vdpau_decoder_deps="vdpau"
2238 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2239 mpeg4_vdpau_hwaccel_deps="vdpau"
2240 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2241 msmpeg4_crystalhd_decoder_select="crystalhd"
2242 vc1_crystalhd_decoder_select="crystalhd"
2243 vc1_dxva2_hwaccel_deps="dxva2"
2244 vc1_dxva2_hwaccel_select="vc1_decoder"
2245 vc1_vaapi_hwaccel_deps="vaapi"
2246 vc1_vaapi_hwaccel_select="vc1_decoder"
2247 vc1_vdpau_decoder_deps="vdpau"
2248 vc1_vdpau_decoder_select="vc1_decoder"
2249 vc1_vdpau_hwaccel_deps="vdpau"
2250 vc1_vdpau_hwaccel_select="vc1_decoder"
2251 wmv3_crystalhd_decoder_select="crystalhd"
2252 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2253 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2254 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2255 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2256
2257 # parsers
2258 h264_parser_select="h264_decoder"
2259 hevc_parser_select="hevc_decoder"
2260 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2261 mpegvideo_parser_select="error_resilience mpegvideo"
2262 vc1_parser_select="mpegvideo"
2263
2264 # external libraries
2265 libaacplus_encoder_deps="libaacplus"
2266 libcelt_decoder_deps="libcelt"
2267 libfaac_encoder_deps="libfaac"
2268 libfaac_encoder_select="audio_frame_queue"
2269 libfdk_aac_decoder_deps="libfdk_aac"
2270 libfdk_aac_encoder_deps="libfdk_aac"
2271 libfdk_aac_encoder_select="audio_frame_queue"
2272 libgme_demuxer_deps="libgme"
2273 libgsm_decoder_deps="libgsm"
2274 libgsm_encoder_deps="libgsm"
2275 libgsm_ms_decoder_deps="libgsm"
2276 libgsm_ms_encoder_deps="libgsm"
2277 libilbc_decoder_deps="libilbc"
2278 libilbc_encoder_deps="libilbc"
2279 libmodplug_demuxer_deps="libmodplug"
2280 libmp3lame_encoder_deps="libmp3lame"
2281 libmp3lame_encoder_select="audio_frame_queue"
2282 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2283 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2284 libopencore_amrnb_encoder_select="audio_frame_queue"
2285 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2286 libopenjpeg_decoder_deps="libopenjpeg"
2287 libopenjpeg_encoder_deps="libopenjpeg"
2288 libopus_decoder_deps="libopus"
2289 libopus_encoder_deps="libopus"
2290 libopus_encoder_select="audio_frame_queue"
2291 libquvi_demuxer_deps="libquvi"
2292 libschroedinger_decoder_deps="libschroedinger"
2293 libschroedinger_encoder_deps="libschroedinger"
2294 libshine_encoder_deps="libshine"
2295 libshine_encoder_select="audio_frame_queue"
2296 libspeex_decoder_deps="libspeex"
2297 libspeex_encoder_deps="libspeex"
2298 libspeex_encoder_select="audio_frame_queue"
2299 libstagefright_h264_decoder_deps="libstagefright_h264"
2300 libtheora_encoder_deps="libtheora"
2301 libtwolame_encoder_deps="libtwolame"
2302 libvo_aacenc_encoder_deps="libvo_aacenc"
2303 libvo_aacenc_encoder_select="audio_frame_queue"
2304 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2305 libvorbis_decoder_deps="libvorbis"
2306 libvorbis_encoder_deps="libvorbis"
2307 libvorbis_encoder_select="audio_frame_queue"
2308 libvpx_vp8_decoder_deps="libvpx"
2309 libvpx_vp8_encoder_deps="libvpx"
2310 libvpx_vp9_decoder_deps="libvpx"
2311 libvpx_vp9_encoder_deps="libvpx"
2312 libwavpack_encoder_deps="libwavpack"
2313 libwebp_encoder_deps="libwebp"
2314 libx264_encoder_deps="libx264"
2315 libx264rgb_encoder_deps="libx264"
2316 libx265_encoder_deps="libx265"
2317 libxavs_encoder_deps="libxavs"
2318 libxvid_encoder_deps="libxvid"
2319 libutvideo_decoder_deps="libutvideo"
2320 libutvideo_encoder_deps="libutvideo"
2321 libzvbi_teletext_decoder_deps="libzvbi"
2322
2323 # demuxers / muxers
2324 ac3_demuxer_select="ac3_parser"
2325 asf_demuxer_select="riffdec"
2326 asf_muxer_select="riffenc"
2327 asf_stream_muxer_select="asf_muxer"
2328 avi_demuxer_select="riffdec exif"
2329 avi_muxer_select="riffenc"
2330 avisynth_demuxer_deps="avisynth"
2331 avisynth_demuxer_select="riffdec"
2332 caf_demuxer_select="riffdec"
2333 dirac_demuxer_select="dirac_parser"
2334 dts_demuxer_select="dca_parser"
2335 dtshd_demuxer_select="dca_parser"
2336 dxa_demuxer_select="riffdec"
2337 eac3_demuxer_select="ac3_parser"
2338 f4v_muxer_select="mov_muxer"
2339 flac_demuxer_select="flac_parser"
2340 hds_muxer_select="flv_muxer"
2341 hls_muxer_select="mpegts_muxer"
2342 image2_alias_pix_demuxer_select="image2_demuxer"
2343 image2_brender_pix_demuxer_select="image2_demuxer"
2344 ipod_muxer_select="mov_muxer"
2345 ismv_muxer_select="mov_muxer"
2346 libnut_demuxer_deps="libnut"
2347 libnut_muxer_deps="libnut"
2348 matroska_audio_muxer_select="matroska_muxer"
2349 matroska_demuxer_select="riffdec"
2350 matroska_demuxer_suggest="bzlib lzo zlib"
2351 matroska_muxer_select="riffenc"
2352 mmf_muxer_select="riffenc"
2353 mov_demuxer_select="riffdec"
2354 mov_demuxer_suggest="zlib"
2355 mov_muxer_select="riffenc rtpenc_chain"
2356 mp3_demuxer_select="mpegaudio_parser"
2357 mp4_muxer_select="mov_muxer"
2358 mpegts_muxer_select="adts_muxer latm_muxer"
2359 mpegtsraw_demuxer_select="mpegts_demuxer"
2360 mxf_d10_muxer_select="mxf_muxer"
2361 nut_muxer_select="riffenc"
2362 nuv_demuxer_select="riffdec"
2363 ogg_demuxer_select="golomb"
2364 psp_muxer_select="mov_muxer"
2365 rtp_demuxer_select="sdp_demuxer"
2366 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2367 rtsp_demuxer_select="http_protocol rtpdec"
2368 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2369 sap_demuxer_select="sdp_demuxer"
2370 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2371 sdp_demuxer_select="rtpdec"
2372 smoothstreaming_muxer_select="ismv_muxer"
2373 spdif_muxer_select="aac_parser"
2374 tak_demuxer_select="tak_parser"
2375 tg2_muxer_select="mov_muxer"
2376 tgp_muxer_select="mov_muxer"
2377 vobsub_demuxer_select="mpegps_demuxer"
2378 w64_demuxer_select="wav_demuxer"
2379 w64_muxer_select="wav_muxer"
2380 wav_demuxer_select="riffdec"
2381 wav_muxer_select="riffenc"
2382 webm_muxer_select="riffenc"
2383 wtv_demuxer_select="riffdec"
2384 wtv_muxer_select="riffenc"
2385 xmv_demuxer_select="riffdec"
2386 xwma_demuxer_select="riffdec"
2387
2388 # indevs / outdevs
2389 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2390 alsa_outdev_deps="alsa_asoundlib_h"
2391 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2392 avfoundation_indev_select="avfoundation"
2393 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2394 caca_outdev_deps="libcaca"
2395 decklink_outdev_deps="decklink pthreads"
2396 decklink_outdev_extralibs="-lstdc++"
2397 dshow_indev_deps="IBaseFilter"
2398 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2399 dv1394_indev_deps="dv1394"
2400 dv1394_indev_select="dv_demuxer"
2401 fbdev_indev_deps="linux_fb_h"
2402 fbdev_outdev_deps="linux_fb_h"
2403 gdigrab_indev_deps="CreateDIBSection"
2404 gdigrab_indev_extralibs="-lgdi32"
2405 gdigrab_indev_select="bmp_decoder"
2406 iec61883_indev_deps="libiec61883"
2407 jack_indev_deps="jack_jack_h sem_timedwait"
2408 lavfi_indev_deps="avfilter"
2409 libcdio_indev_deps="libcdio"
2410 libdc1394_indev_deps="libdc1394"
2411 libv4l2_indev_deps="libv4l2"
2412 openal_indev_deps="openal"
2413 opengl_outdev_deps="opengl"
2414 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2415 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2416 pulse_indev_deps="libpulse"
2417 pulse_outdev_deps="libpulse"
2418 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2419 qtkit_indev_select="qtkit"
2420 sdl_outdev_deps="sdl"
2421 sndio_indev_deps="sndio_h"
2422 sndio_outdev_deps="sndio_h"
2423 v4l_indev_deps="linux_videodev_h"
2424 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2425 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2426 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2427 vfwcap_indev_extralibs="-lavicap32"
2428 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2429 xv_outdev_extralibs="-lXv -lX11 -lXext"
2430 x11grab_indev_deps="x11grab"
2431
2432 # protocols
2433 bluray_protocol_deps="libbluray"
2434 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2435 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2436 ffrtmpcrypt_protocol_select="tcp_protocol"
2437 ffrtmphttp_protocol_deps="!librtmp_protocol"
2438 ffrtmphttp_protocol_select="http_protocol"
2439 ftp_protocol_select="tcp_protocol"
2440 gopher_protocol_select="network"
2441 http_protocol_select="tcp_protocol"
2442 httpproxy_protocol_select="tcp_protocol"
2443 https_protocol_select="tls_protocol"
2444 librtmp_protocol_deps="librtmp"
2445 librtmpe_protocol_deps="librtmp"
2446 librtmps_protocol_deps="librtmp"
2447 librtmpt_protocol_deps="librtmp"
2448 librtmpte_protocol_deps="librtmp"
2449 libssh_protocol_deps="libssh"
2450 mmsh_protocol_select="http_protocol"
2451 mmst_protocol_select="network"
2452 rtmp_protocol_deps="!librtmp_protocol"
2453 rtmp_protocol_select="tcp_protocol"
2454 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2455 rtmps_protocol_deps="!librtmp_protocol"
2456 rtmps_protocol_select="tls_protocol"
2457 rtmpt_protocol_select="ffrtmphttp_protocol"
2458 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2459 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2460 rtp_protocol_select="udp_protocol"
2461 sctp_protocol_deps="struct_sctp_event_subscribe"
2462 sctp_protocol_select="network"
2463 srtp_protocol_select="rtp_protocol"
2464 tcp_protocol_select="network"
2465 tls_protocol_deps_any="openssl gnutls"
2466 tls_protocol_select="tcp_protocol"
2467 udp_protocol_select="network"
2468 unix_protocol_deps="sys_un_h"
2469 unix_protocol_select="network"
2470
2471 # filters
2472 aconvert_filter_deps="swresample"
2473 amovie_filter_deps="avcodec avformat"
2474 aresample_filter_deps="swresample"
2475 ass_filter_deps="libass"
2476 asyncts_filter_deps="avresample"
2477 atempo_filter_deps="avcodec"
2478 atempo_filter_select="rdft"
2479 azmq_filter_deps="libzmq"
2480 blackframe_filter_deps="gpl"
2481 boxblur_filter_deps="gpl"
2482 bs2b_filter_deps="libbs2b"
2483 colormatrix_filter_deps="gpl"
2484 cropdetect_filter_deps="gpl"
2485 dctdnoiz_filter_deps="avcodec"
2486 dctdnoiz_filter_select="dct"
2487 delogo_filter_deps="gpl"
2488 deshake_filter_deps="avcodec"
2489 deshake_filter_select="dsputil"
2490 drawtext_filter_deps="libfreetype"
2491 ebur128_filter_deps="gpl"
2492 flite_filter_deps="libflite"
2493 frei0r_filter_deps="frei0r dlopen"
2494 frei0r_filter_extralibs='$ldl'
2495 frei0r_src_filter_deps="frei0r dlopen"
2496 frei0r_src_filter_extralibs='$ldl'
2497 geq_filter_deps="gpl"
2498 histeq_filter_deps="gpl"
2499 hqdn3d_filter_deps="gpl"
2500 interlace_filter_deps="gpl"
2501 kerndeint_filter_deps="gpl"
2502 ladspa_filter_deps="ladspa dlopen"
2503 ladspa_filter_extralibs='$ldl'
2504 mcdeint_filter_deps="avcodec gpl"
2505 movie_filter_deps="avcodec avformat"
2506 mp_filter_deps="gpl avcodec swscale inline_asm"
2507 mpdecimate_filter_deps="gpl avcodec"
2508 mptestsrc_filter_deps="gpl"
2509 negate_filter_deps="lut_filter"
2510 perspective_filter_deps="gpl"
2511 ocv_filter_deps="libopencv"
2512 owdenoise_filter_deps="gpl"
2513 pan_filter_deps="swresample"
2514 phase_filter_deps="gpl"
2515 pp_filter_deps="gpl postproc"
2516 pullup_filter_deps="gpl"
2517 removelogo_filter_deps="avcodec avformat swscale"
2518 resample_filter_deps="avresample"
2519 sab_filter_deps="gpl swscale"
2520 scale_filter_deps="swscale"
2521 smartblur_filter_deps="gpl swscale"
2522 showspectrum_filter_deps="avcodec"
2523 showspectrum_filter_select="rdft"
2524 spp_filter_deps="gpl avcodec"
2525 spp_filter_select="fft"
2526 stereo3d_filter_deps="gpl"
2527 subtitles_filter_deps="avformat avcodec libass"
2528 super2xsai_filter_deps="gpl"
2529 tinterlace_filter_deps="gpl"
2530 vidstabdetect_filter_deps="libvidstab"
2531 vidstabtransform_filter_deps="libvidstab"
2532 pixfmts_super2xsai_test_deps="super2xsai_filter"
2533 tinterlace_merge_test_deps="tinterlace_filter"
2534 tinterlace_pad_test_deps="tinterlace_filter"
2535 zmq_filter_deps="libzmq"
2536
2537 # examples
2538 avio_reading="avformat avcodec avutil"
2539 avcodec_example_deps="avcodec avutil"
2540 demuxing_decoding_example_deps="avcodec avformat avutil"
2541 filter_audio_example_deps="avfilter avutil"
2542 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2543 filtering_video_example_deps="avfilter avcodec avformat avutil"
2544 metadata_example_deps="avformat avutil"
2545 muxing_example_deps="avcodec avformat avutil swscale"
2546 remuxing_example_deps="avcodec avformat avutil"
2547 resampling_audio_example_deps="avutil swresample"
2548 scaling_video_example_deps="avutil swscale"
2549 transcode_aac_example_deps="avcodec avformat swresample"
2550 transcoding_example_deps="avfilter avcodec avformat avutil"
2551
2552 # libraries, in linking order
2553 avcodec_deps="avutil"
2554 avdevice_deps="avformat avcodec avutil"
2555 avfilter_deps="avutil"
2556 avformat_deps="avcodec avutil"
2557 avresample_deps="avutil"
2558 postproc_deps="avutil gpl"
2559 swresample_deps="avutil"
2560 swscale_deps="avutil"
2561
2562 # programs
2563 ffmpeg_deps="avcodec avfilter avformat swresample"
2564 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2565                null_filter
2566                setpts_filter trim_filter"
2567 ffplay_deps="avcodec avformat swscale swresample sdl"
2568 ffplay_libs='$sdl_libs'
2569 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2570 ffprobe_deps="avcodec avformat"
2571 ffserver_deps="avformat fork sarestart"
2572 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2573
2574 # documentation
2575 podpages_deps="perl"
2576 manpages_deps="perl pod2man"
2577 htmlpages_deps="perl texi2html"
2578 txtpages_deps="perl makeinfo"
2579 doc_deps_any="manpages htmlpages podpages txtpages"
2580
2581 # default parameters
2582
2583 logfile="config.log"
2584
2585 # installation paths
2586 prefix_default="/usr/local"
2587 bindir_default='${prefix}/bin'
2588 datadir_default='${prefix}/share/ffmpeg'
2589 docdir_default='${prefix}/share/doc/ffmpeg'
2590 incdir_default='${prefix}/include'
2591 libdir_default='${prefix}/lib'
2592 mandir_default='${prefix}/share/man'
2593 shlibdir_default="$libdir_default"
2594
2595 # toolchain
2596 ar_default="ar"
2597 cc_default="gcc"
2598 cxx_default="g++"
2599 host_cc_default="gcc"
2600 cp_f="cp -f"
2601 install="install"
2602 ln_s="ln -s -f"
2603 nm_default="nm -g"
2604 objformat="elf"
2605 pkg_config_default=pkg-config
2606 ranlib_default="ranlib"
2607 strip_default="strip"
2608 yasmexe_default="yasm"
2609 windres_default="windres"
2610
2611 nogas=":"
2612
2613 # OS
2614 target_os_default=$(tolower $(uname -s))
2615 host_os=$target_os_default
2616
2617 # machine
2618 if test "$target_os_default" = aix; then
2619     arch_default=$(uname -p)
2620 else
2621     arch_default=$(uname -m)
2622 fi
2623 cpu="generic"
2624
2625 # configurable options
2626 enable $PROGRAM_LIST
2627 enable $DOCUMENT_LIST
2628 enable $EXAMPLE_LIST
2629 enable $(filter_out avresample $LIBRARY_LIST)
2630 enable stripping
2631
2632 enable asm
2633 enable debug
2634 enable doc
2635 enable optimizations
2636 enable runtime_cpudetect
2637 enable safe_bitstream_reader
2638 enable static
2639 enable swscale_alpha
2640
2641 # Enable hwaccels by default.
2642 enable dxva2 vaapi vda vdpau xvmc
2643 enable xlib
2644
2645 # build settings
2646 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2647 LIBPREF="lib"
2648 LIBSUF=".a"
2649 FULLNAME='$(NAME)$(BUILDSUF)'
2650 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2651 SLIBPREF="lib"
2652 SLIBSUF=".so"
2653 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2654 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2655 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2656 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2657 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2658 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2659
2660 asflags_filter=echo
2661 cflags_filter=echo
2662 ldflags_filter=echo
2663
2664 AS_C='-c'
2665 AS_O='-o $@'
2666 CC_C='-c'
2667 CC_E='-E -o $@'
2668 CC_O='-o $@'
2669 CXX_C='-c'
2670 CXX_O='-o $@'
2671 LD_O='-o $@'
2672 LD_LIB='-l%'
2673 LD_PATH='-L'
2674 HOSTCC_C='-c'
2675 HOSTCC_E='-E -o $@'
2676 HOSTCC_O='-o $@'
2677 HOSTLD_O='-o $@'
2678
2679 host_libs='-lm'
2680 host_cflags_filter=echo
2681 host_ldflags_filter=echo
2682
2683 target_path='$(CURDIR)'
2684
2685 # since the object filename is not given with the -MM flag, the compiler
2686 # is only able to print the basename, and we must add the path ourselves
2687 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2688 DEPFLAGS='-MM'
2689
2690 # find source path
2691 if test -f configure; then
2692     source_path=.
2693 else
2694     source_path=$(cd $(dirname "$0"); pwd)
2695     echo "$source_path" | grep -q '[[:blank:]]' &&
2696         die "Out of tree builds are impossible with whitespace in source path."
2697     test -e "$source_path/config.h" &&
2698         die "Out of tree builds are impossible with config.h in source dir."
2699 fi
2700
2701 for v in "$@"; do
2702     r=${v#*=}
2703     l=${v%"$r"}
2704     r=$(sh_quote "$r")
2705     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2706 done
2707
2708 find_things(){
2709     thing=$1
2710     pattern=$2
2711     file=$source_path/$3
2712     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2713 }
2714
2715 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2716 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2717 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2718 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2719 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2720 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2721 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2722 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2723 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2724 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2725 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2726
2727 ALL_COMPONENTS="
2728     $BSF_LIST
2729     $DECODER_LIST
2730     $DEMUXER_LIST
2731     $ENCODER_LIST
2732     $FILTER_LIST
2733     $HWACCEL_LIST
2734     $INDEV_LIST
2735     $MUXER_LIST
2736     $OUTDEV_LIST
2737     $PARSER_LIST
2738     $PROTOCOL_LIST
2739 "
2740
2741 for n in $COMPONENT_LIST; do
2742     v=$(toupper ${n%s})_LIST
2743     eval enable \$$v
2744     eval ${n}_if_any="\$$v"
2745 done
2746
2747 enable $ARCH_EXT_LIST
2748
2749 die_unknown(){
2750     echo "Unknown option \"$1\"."
2751     echo "See $0 --help for available options."
2752     exit 1
2753 }
2754
2755 print_3_columns() {
2756     cat | tr ' ' '\n' | sort | pr -r -3 -t
2757 }
2758
2759 show_list() {
2760     suffix=_$1
2761     shift
2762     echo $* | sed s/$suffix//g | print_3_columns
2763     exit 0
2764 }
2765
2766 rand_list(){
2767     IFS=', '
2768     set -- $*
2769     unset IFS
2770     for thing; do
2771         comp=${thing%:*}
2772         prob=${thing#$comp}
2773         prob=${prob#:}
2774         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2775         echo "prob ${prob:-0.5}"
2776         printf '%s\n' $comp
2777     done
2778 }
2779
2780 do_random(){
2781     action=$1
2782     shift
2783     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2784     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2785 }
2786
2787 for opt do
2788     optval="${opt#*=}"
2789     case "$opt" in
2790         --extra-ldflags=*)
2791             add_ldflags $optval
2792         ;;
2793         --extra-libs=*)
2794             add_extralibs $optval
2795         ;;
2796         --disable-devices)
2797             disable $INDEV_LIST $OUTDEV_LIST
2798         ;;
2799         --enable-debug=*)
2800             debuglevel="$optval"
2801         ;;
2802         --disable-programs)
2803             disable $PROGRAM_LIST
2804         ;;
2805         --disable-everything)
2806             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2807         ;;
2808         --disable-all)
2809             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2810             disable $LIBRARY_LIST $PROGRAM_LIST doc
2811         ;;
2812         --enable-random|--disable-random)
2813             action=${opt%%-random}
2814             do_random ${action#--} $COMPONENT_LIST
2815         ;;
2816         --enable-random=*|--disable-random=*)
2817             action=${opt%%-random=*}
2818             do_random ${action#--} $optval
2819         ;;
2820         --enable-*=*|--disable-*=*)
2821             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2822             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2823             eval list=\$$(toupper $thing)_LIST
2824             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2825             list=$(filter "$name" $list)
2826             [ "$list" = "" ] && warn "Option $opt did not match anything"
2827             $action $list
2828         ;;
2829         --enable-?*|--disable-?*)
2830             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2831             if is_in $option $COMPONENT_LIST; then
2832                 test $action = disable && action=unset
2833                 eval $action \$$(toupper ${option%s})_LIST
2834             elif is_in $option $CMDLINE_SELECT; then
2835                 $action $option
2836             else
2837                 die_unknown $opt
2838             fi
2839         ;;
2840         --list-*)
2841             NAME="${opt#--list-}"
2842             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2843             NAME=${NAME%s}
2844             eval show_list $NAME \$$(toupper $NAME)_LIST
2845         ;;
2846         --help|-h) show_help
2847         ;;
2848         --fatal-warnings) enable fatal_warnings
2849         ;;
2850         *)
2851             optname="${opt%%=*}"
2852             optname="${optname#--}"
2853             optname=$(echo "$optname" | sed 's/-/_/g')
2854             if is_in $optname $CMDLINE_SET; then
2855                 eval $optname='$optval'
2856             elif is_in $optname $CMDLINE_APPEND; then
2857                 append $optname "$optval"
2858             else
2859                 die_unknown $opt
2860             fi
2861         ;;
2862     esac
2863 done
2864
2865 disabled logging && logfile=/dev/null
2866
2867 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2868 set >> $logfile
2869
2870 test -n "$cross_prefix" && enable cross_compile
2871
2872 if enabled cross_compile; then
2873     test -n "$arch" && test -n "$target_os" ||
2874         die "Must specify target arch and OS when cross-compiling"
2875 fi
2876
2877 ar_default="${cross_prefix}${ar_default}"
2878 cc_default="${cross_prefix}${cc_default}"
2879 cxx_default="${cross_prefix}${cxx_default}"
2880 nm_default="${cross_prefix}${nm_default}"
2881 pkg_config_default="${cross_prefix}${pkg_config_default}"
2882 ranlib_default="${cross_prefix}${ranlib_default}"
2883 strip_default="${cross_prefix}${strip_default}"
2884 windres_default="${cross_prefix}${windres_default}"
2885
2886 sysinclude_default="${sysroot}/usr/include"
2887
2888 test -n "$valgrind" && toolchain="valgrind-memcheck"
2889
2890 case "$toolchain" in
2891     clang-asan)
2892         cc_default="clang"
2893         add_cflags  -fsanitize=address
2894         add_ldflags -fsanitize=address
2895     ;;
2896     clang-tsan)
2897         cc_default="clang"
2898         add_cflags  -fsanitize=thread -pie
2899         add_ldflags -fsanitize=thread -pie
2900     ;;
2901     clang-usan)
2902         cc_default="clang"
2903         add_cflags  -fsanitize=undefined
2904         add_ldflags -fsanitize=undefined
2905     ;;
2906     gcc-asan)
2907         cc_default="gcc"
2908         add_cflags  -fsanitize=address
2909         add_ldflags -fsanitize=address
2910     ;;
2911     gcc-tsan)
2912         cc_default="gcc"
2913         add_cflags  -fsanitize=thread -pie -fPIC
2914         add_ldflags -fsanitize=thread -pie -fPIC
2915     ;;
2916     gcc-usan)
2917         cc_default="gcc"
2918         add_cflags  -fsanitize=undefined
2919         add_ldflags -fsanitize=undefined
2920     ;;
2921     valgrind-massif)
2922         target_exec_default=${valgrind:-"valgrind"}
2923         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"
2924     ;;
2925     valgrind-memcheck)
2926         target_exec_default=${valgrind:-"valgrind"}
2927         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2928     ;;
2929     msvc)
2930         # Check whether the current MSVC version needs the C99 converter.
2931         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2932         # support enough of C99 to build ffmpeg. Default to the new
2933         # behaviour if the regexp was unable to match anything, since this
2934         # successfully parses the version number of existing supported
2935         # versions that require the converter (MSVC 2010 and 2012).
2936         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2937         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2938             cc_default="cl"
2939         else
2940             cc_default="c99wrap cl"
2941         fi
2942         ld_default="link"
2943         nm_default="dumpbin -symbols"
2944         ar_default="lib"
2945         target_os_default="win32"
2946         # Use a relative path for TMPDIR. This makes sure all the
2947         # ffconf temp files are written with a relative path, avoiding
2948         # issues with msys/win32 path conversion for MSVC parameters
2949         # such as -Fo<file> or -out:<file>.
2950         TMPDIR=.
2951     ;;
2952     icl)
2953         cc_default="icl"
2954         ld_default="xilink"
2955         nm_default="dumpbin -symbols"
2956         ar_default="xilib"
2957         target_os_default="win32"
2958         TMPDIR=.
2959     ;;
2960     gcov)
2961         add_cflags  -fprofile-arcs -ftest-coverage
2962         add_ldflags -fprofile-arcs -ftest-coverage
2963     ;;
2964     hardened)
2965         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2966         add_ldflags -Wl,-z,relro -Wl,-z,now
2967     ;;
2968     ?*)
2969         die "Unknown toolchain $toolchain"
2970     ;;
2971 esac
2972
2973 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2974 enabled cross_compile || host_cc_default=$cc
2975 set_default host_cc
2976
2977 if ! $pkg_config --version >/dev/null 2>&1; then
2978     warn "$pkg_config not found, library detection may fail."
2979     pkg_config=false
2980 fi
2981
2982 exesuf() {
2983     case $1 in
2984         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2985     esac
2986 }
2987
2988 EXESUF=$(exesuf $target_os)
2989 HOSTEXESUF=$(exesuf $host_os)
2990
2991 # set temporary file name
2992 : ${TMPDIR:=$TEMPDIR}
2993 : ${TMPDIR:=$TMP}
2994 : ${TMPDIR:=/tmp}
2995
2996 if [ -n "$tempprefix" ] ; then
2997     mktemp(){
2998         echo $tempprefix.${HOSTNAME}.${UID}
2999     }
3000 elif ! check_cmd mktemp -u XXXXXX; then
3001     # simple replacement for missing mktemp
3002     # NOT SAFE FOR GENERAL USE
3003     mktemp(){
3004         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3005     }
3006 fi
3007
3008 tmpfile(){
3009     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3010         (set -C; exec > $tmp) 2>/dev/null ||
3011         die "Unable to create temporary file in $TMPDIR."
3012     append TMPFILES $tmp
3013     eval $1=$tmp
3014 }
3015
3016 trap 'rm -f -- $TMPFILES' EXIT
3017
3018 tmpfile TMPASM .asm
3019 tmpfile TMPC   .c
3020 tmpfile TMPCPP .cpp
3021 tmpfile TMPE   $EXESUF
3022 tmpfile TMPH   .h
3023 tmpfile TMPM   .m
3024 tmpfile TMPO   .o
3025 tmpfile TMPS   .S
3026 tmpfile TMPSH  .sh
3027 tmpfile TMPV   .ver
3028
3029 unset -f mktemp
3030
3031 chmod +x $TMPE
3032
3033 # make sure we can execute files in $TMPDIR
3034 cat > $TMPSH 2>> $logfile <<EOF
3035 #! /bin/sh
3036 EOF
3037 chmod +x $TMPSH >> $logfile 2>&1
3038 if ! $TMPSH >> $logfile 2>&1; then
3039     cat <<EOF
3040 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3041 variable to another directory and make sure that it is not mounted noexec.
3042 EOF
3043     die "Sanity test failed."
3044 fi
3045
3046 ccc_flags(){
3047     for flag; do
3048         case $flag in
3049             -std=c99)           echo -c99                       ;;
3050             -mcpu=*)            echo -arch ${flag#*=}           ;;
3051             -mieee)             echo -ieee                      ;;
3052             -O*|-fast)          echo $flag                      ;;
3053             -fno-math-errno)    echo -assume nomath_errno       ;;
3054             -g)                 echo -g3                        ;;
3055             -Wall)              echo -msg_enable level2         ;;
3056             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3057             -Wl,*)              echo $flag                      ;;
3058             -f*|-W*)                                            ;;
3059             *)                  echo $flag                      ;;
3060         esac
3061    done
3062 }
3063
3064 cparser_flags(){
3065     for flag; do
3066         case $flag in
3067             -Wno-switch)             echo -Wno-switch-enum ;;
3068             -Wno-format-zero-length) ;;
3069             -Wdisabled-optimization) ;;
3070             -Wno-pointer-sign)       echo -Wno-other ;;
3071             *)                       echo $flag ;;
3072         esac
3073     done
3074 }
3075
3076 msvc_common_flags(){
3077     for flag; do
3078         case $flag in
3079             # In addition to specifying certain flags under the compiler
3080             # specific filters, they must be specified here as well or else the
3081             # generic catch all at the bottom will print the original flag.
3082             -Wall)                ;;
3083             -std=c99)             ;;
3084             # Common flags
3085             -fomit-frame-pointer) ;;
3086             -g)                   echo -Z7 ;;
3087             -fno-math-errno)      ;;
3088             -fno-common)          ;;
3089             -fno-signed-zeros)    ;;
3090             -fPIC)                ;;
3091             -mthumb)              ;;
3092             -march=*)             ;;
3093             -lz)                  echo zlib.lib ;;
3094             -lavifil32)           echo vfw32.lib ;;
3095             -lavicap32)           echo vfw32.lib user32.lib ;;
3096             -l*)                  echo ${flag#-l}.lib ;;
3097             *)                    echo $flag ;;
3098         esac
3099     done
3100 }
3101
3102 msvc_flags(){
3103     msvc_common_flags "$@"
3104     for flag; do
3105         case $flag in
3106             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3107                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3108                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3109                                        -wd4554 \
3110                                        -wd4273 ;;
3111         esac
3112     done
3113 }
3114
3115 icl_flags(){
3116     msvc_common_flags "$@"
3117     for flag; do
3118         case $flag in
3119             # Despite what Intel's documentation says -Wall, which is supported
3120             # on Windows, does enable remarks so disable them here.
3121             -Wall)                echo $flag -Qdiag-disable:remark ;;
3122             -std=c99)             echo -Qstd=c99 ;;
3123         esac
3124     done
3125 }
3126
3127 icc_flags(){
3128     for flag; do
3129         case $flag in
3130             -flto)                echo -ipo ;;
3131             *)                    echo $flag ;;
3132         esac
3133     done
3134 }
3135
3136 pgi_flags(){
3137     for flag; do
3138         case $flag in
3139             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3140             -fomit-frame-pointer) echo -Mnoframe ;;
3141             -g)                   echo -gopt ;;
3142             *)                    echo $flag ;;
3143         esac
3144     done
3145 }
3146
3147 suncc_flags(){
3148     for flag; do
3149         case $flag in
3150             -march=*|-mcpu=*)
3151                 case "${flag#*=}" in
3152                     native)                   echo -xtarget=native       ;;
3153                     v9|niagara)               echo -xarch=sparc          ;;
3154                     ultrasparc)               echo -xarch=sparcvis       ;;
3155                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3156                     i586|pentium)             echo -xchip=pentium        ;;
3157                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3158                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3159                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3160                     pentium4*)          echo -xtarget=pentium4           ;;
3161                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3162                     *-sse3)             echo -xarch=sse3                 ;;
3163                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3164                     bonnell)                   echo -xarch=ssse3         ;;
3165                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3166                     westmere)                  echo -xtarget=westmere    ;;
3167                     silvermont)                echo -xarch=sse4_2        ;;
3168                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3169                     core-avx*|ivybridge|haswell|broadwell)
3170                                                echo -xarch=avx           ;;
3171                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3172                     btver1)                    echo -xarch=amdsse4a      ;;
3173                     btver2|bdver*)             echo -xarch=avx           ;;
3174                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3175                     k8|opteron|athlon64|athlon-fx)
3176                                                echo -xarch=sse2a         ;;
3177                     athlon*)                   echo -xarch=pentium_proa  ;;
3178                 esac
3179                 ;;
3180             -std=c99)             echo -xc99              ;;
3181             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3182             -fPIC)                echo -KPIC -xcode=pic32 ;;
3183             -W*,*)                echo $flag              ;;
3184             -f*-*|-W*|-mimpure-text)                      ;;
3185             -shared)              echo -G                 ;;
3186             *)                    echo $flag              ;;
3187         esac
3188     done
3189 }
3190
3191 tms470_flags(){
3192     for flag; do
3193         case $flag in
3194             -march=*|-mcpu=*)
3195                 case "${flag#*=}" in
3196                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3197                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3198                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3199                     armv6*|arm11*)          echo -mv=6   ;;
3200                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3201                                             echo -mv=5e  ;;
3202                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3203                 esac
3204                 ;;
3205             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3206             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3207             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3208             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3209             -msoft-float)   echo --float_support=vfplib       ;;
3210             -O[0-3]|-mf=*)  echo $flag                        ;;
3211             -g)             echo -g -mn                       ;;
3212             -pds=*)         echo $flag                        ;;
3213             -D*|-I*)        echo $flag                        ;;
3214             --gcc|--abi=*)  echo $flag                        ;;
3215             -me)            echo $flag                        ;;
3216         esac
3217     done
3218 }
3219
3220 probe_cc(){
3221     pfx=$1
3222     _cc=$2
3223
3224     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3225     unset _ld_o _ldflags _ld_lib _ld_path
3226     unset _depflags _DEPCMD _DEPFLAGS
3227     _flags_filter=echo
3228
3229     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3230         true # no-op to avoid reading stdin in following checks
3231     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3232         _type=llvm_gcc
3233         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3234         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3235         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3236         _cflags_speed='-O3'
3237         _cflags_size='-Os'
3238     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3239         _type=gcc
3240         gcc_version=$($_cc --version | head -n1)
3241         gcc_basever=$($_cc -dumpversion)
3242         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3243         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3244         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3245         if ! $_cc -dumpversion | grep -q '^2\.'; then
3246             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3247         fi
3248         _cflags_speed='-O3'
3249         _cflags_size='-Os'
3250     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3251         _type=icc
3252         _ident=$($_cc --version | head -n1)
3253         _depflags='-MMD'
3254         _cflags_speed='-O3'
3255         _cflags_size='-Os'
3256         _cflags_noopt='-O1'
3257         _flags_filter=icc_flags
3258     elif $_cc -v 2>&1 | grep -q xlc; then
3259         _type=xlc
3260         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3261         _cflags_speed='-O5'
3262         _cflags_size='-O5 -qcompact'
3263     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3264         _type=ccc
3265         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3266         _DEPFLAGS='-M'
3267         _cflags_speed='-fast'
3268         _cflags_size='-O1'
3269         _flags_filter=ccc_flags
3270     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3271         test -d "$sysroot" || die "No valid sysroot specified."
3272         _type=armcc
3273         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3274         armcc_conf="$PWD/armcc.conf"
3275         $_cc --arm_linux_configure                 \
3276              --arm_linux_config_file="$armcc_conf" \
3277              --configure_sysroot="$sysroot"        \
3278              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3279              die "Error creating armcc configuration file."
3280         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3281         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3282         as_default="${cross_prefix}gcc"
3283         _depflags='-MMD'
3284         _cflags_speed='-O3'
3285         _cflags_size='-Os'
3286     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3287         _type=tms470
3288         _ident=$($_cc -version | head -n1 | tr -s ' ')
3289         _flags='--gcc --abi=eabi -me'
3290         _cc_e='-ppl -fe=$@'
3291         _cc_o='-fe=$@'
3292         _depflags='-ppa -ppd=$(@:.o=.d)'
3293         _cflags_speed='-O3 -mf=5'
3294         _cflags_size='-O3 -mf=2'
3295         _flags_filter=tms470_flags
3296     elif $_cc -v 2>&1 | grep -q clang; then
3297         _type=clang
3298         _ident=$($_cc --version | head -n1)
3299         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3300         _cflags_speed='-O3'
3301         _cflags_size='-Os'
3302     elif $_cc -V 2>&1 | grep -q Sun; then
3303         _type=suncc
3304         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3305         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3306         _DEPFLAGS='-xM1 -xc99'
3307         _ldflags='-std=c99'
3308         _cflags_speed='-O5'
3309         _cflags_size='-O5 -xspace'
3310         _flags_filter=suncc_flags
3311     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3312         _type=pathscale
3313         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3314         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3315         _cflags_speed='-O2'
3316         _cflags_size='-Os'
3317         _flags_filter='filter_out -Wdisabled-optimization'
3318     elif $_cc -v 2>&1 | grep -q Open64; then
3319         _type=open64
3320         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3321         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3322         _cflags_speed='-O2'
3323         _cflags_size='-Os'
3324         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3325     elif $_cc -V 2>&1 | grep -q Portland; then
3326         _type=pgi
3327         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3328         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3329         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3330         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3331         _cflags_noopt="-O"
3332         _flags_filter=pgi_flags
3333     elif $_cc 2>&1 | grep -q Microsoft; then
3334         _type=msvc
3335         _ident=$($cc 2>&1 | head -n1)
3336         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3337         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3338         _cflags_speed="-O2"
3339         _cflags_size="-O1"
3340         if $_cc 2>&1 | grep -q Linker; then
3341             _ld_o='-out:$@'
3342         else
3343             _ld_o='-Fe$@'
3344         fi
3345         _cc_o='-Fo$@'
3346         _cc_e='-P -Fi$@'
3347         _flags_filter=msvc_flags
3348         _ld_lib='lib%.a'
3349         _ld_path='-libpath:'
3350         _flags='-nologo'
3351         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3352         if [ $pfx = hostcc ]; then
3353             append _cflags -Dsnprintf=_snprintf
3354         fi
3355         disable stripping
3356     elif $_cc 2>&1 | grep -q Intel; then
3357         _type=icl
3358         _ident=$($cc 2>&1 | head -n1)
3359         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3360         # Not only is O3 broken on 13.x+ but it is slower on all previous
3361         # versions (tested) as well.
3362         _cflags_speed="-O2"
3363         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3364         if $_cc 2>&1 | grep -q Linker; then
3365             _ld_o='-out:$@'
3366         else
3367             _ld_o='-Fe$@'
3368         fi
3369         _cc_o='-Fo$@'
3370         _cc_e='-P'
3371         _flags_filter=icl_flags
3372         _ld_lib='lib%.a'
3373         _ld_path='-libpath:'
3374         # -Qdiag-error to make icl error when seeing certain unknown arguments
3375         _flags='-nologo -Qdiag-error:4044,10157'
3376         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3377         # with MSVC which enables it by default.
3378         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3379         if [ $pfx = hostcc ]; then
3380             append _cflags -Dsnprintf=_snprintf
3381         fi
3382     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3383         _type=cparser
3384         _ident=$($_cc --version | head -n1)
3385         _depflags='-MMD'
3386         _cflags_speed='-O4'
3387         _cflags_size='-O2'
3388         _flags_filter=cparser_flags
3389     fi
3390
3391     eval ${pfx}_type=\$_type
3392     eval ${pfx}_ident=\$_ident
3393 }
3394
3395 set_ccvars(){
3396     eval ${1}_C=\${_cc_c-\${${1}_C}}
3397     eval ${1}_E=\${_cc_e-\${${1}_E}}
3398     eval ${1}_O=\${_cc_o-\${${1}_O}}
3399
3400     if [ -n "$_depflags" ]; then
3401         eval ${1}_DEPFLAGS=\$_depflags
3402     else
3403         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3404         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3405         eval DEP${1}FLAGS=\$_flags
3406     fi
3407 }
3408
3409 probe_cc cc "$cc"
3410 cflags_filter=$_flags_filter
3411 cflags_speed=$_cflags_speed
3412 cflags_size=$_cflags_size
3413 cflags_noopt=$_cflags_noopt
3414 add_cflags $_flags $_cflags
3415 cc_ldflags=$_ldflags
3416 set_ccvars CC
3417
3418 probe_cc hostcc "$host_cc"
3419 host_cflags_filter=$_flags_filter
3420 add_host_cflags  $_flags $_cflags
3421 set_ccvars HOSTCC
3422
3423 test -n "$cc_type" && enable $cc_type ||
3424     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3425
3426 : ${as_default:=$cc}
3427 : ${dep_cc_default:=$cc}
3428 : ${ld_default:=$cc}
3429 : ${host_ld_default:=$host_cc}
3430 set_default ar as dep_cc ld host_ld windres
3431
3432 probe_cc as "$as"
3433 asflags_filter=$_flags_filter
3434 add_asflags $_flags $_cflags
3435 set_ccvars AS
3436
3437 probe_cc ld "$ld"
3438 ldflags_filter=$_flags_filter
3439 add_ldflags $_flags $_ldflags
3440 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3441 LD_O=${_ld_o-$LD_O}
3442 LD_LIB=${_ld_lib-$LD_LIB}
3443 LD_PATH=${_ld_path-$LD_PATH}
3444
3445 probe_cc hostld "$host_ld"
3446 host_ldflags_filter=$_flags_filter
3447 add_host_ldflags $_flags $_ldflags
3448 HOSTLD_O=${_ld_o-$HOSTLD_O}
3449
3450 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3451     probe_cc depcc "$dep_cc"
3452     CCDEP=${_DEPCMD:-$DEPCMD}
3453     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3454     DEPCCFLAGS=$_flags
3455 fi
3456
3457 if $ar 2>&1 | grep -q Microsoft; then
3458     arflags="-nologo"
3459     ar_o='-out:$@'
3460 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3461     arflags="rq"
3462     ar_o='$@'
3463 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3464     arflags='-Xany -r -c'
3465     ar_o='$@'
3466 else
3467     arflags="rc"
3468     ar_o='$@'
3469 fi
3470
3471 add_cflags $extra_cflags
3472 add_cxxflags $extra_cxxflags
3473 add_asflags $extra_cflags
3474
3475 if test -n "$sysroot"; then
3476     case "$cc_type" in
3477         gcc|llvm_gcc|clang)
3478             add_cppflags --sysroot="$sysroot"
3479             add_ldflags --sysroot="$sysroot"
3480 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3481             add_cppflags -isysroot "$sysroot"
3482             add_ldflags -isysroot "$sysroot"
3483         ;;
3484         tms470)
3485             add_cppflags -I"$sysinclude"
3486             add_ldflags  --sysroot="$sysroot"
3487         ;;
3488     esac
3489 fi
3490
3491 if test "$cpu" = host; then
3492     enabled cross_compile &&
3493         die "--cpu=host makes no sense when cross-compiling."
3494
3495     case "$cc_type" in
3496         gcc|llvm_gcc)
3497             check_native(){
3498                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3499                 sed -n "/cc1.*$1=/{
3500                             s/.*$1=\\([^ ]*\\).*/\\1/
3501                             p
3502                             q
3503                         }" $TMPE
3504             }
3505             cpu=$(check_native -march || check_native -mcpu)
3506         ;;
3507     esac
3508
3509     test "${cpu:-host}" = host &&
3510         die "--cpu=host not supported with compiler $cc"
3511 fi
3512
3513 # Deal with common $arch aliases
3514 case "$arch" in
3515     aarch64|arm64)
3516         arch="aarch64"
3517     ;;
3518     arm*|iPad*|iPhone*)
3519         arch="arm"
3520     ;;
3521     mips*|IP*)
3522         arch="mips"
3523     ;;
3524     parisc*|hppa*)
3525         arch="parisc"
3526     ;;
3527     "Power Macintosh"|ppc*|powerpc*)
3528         arch="ppc"
3529     ;;
3530     s390|s390x)
3531         arch="s390"
3532     ;;
3533     sh4|sh)
3534         arch="sh4"
3535     ;;
3536     sun4u|sparc*)
3537         arch="sparc"
3538     ;;
3539     tilegx|tile-gx)
3540         arch="tilegx"
3541     ;;
3542     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3543         arch="x86"
3544     ;;
3545 esac
3546
3547 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3548 enable $arch
3549
3550 # Add processor-specific flags
3551 if enabled aarch64; then
3552
3553     case $cpu in
3554         armv*)
3555             cpuflags="-march=$cpu"
3556         ;;
3557         *)
3558             cpuflags="-mcpu=$cpu"
3559         ;;
3560     esac
3561
3562 elif enabled alpha; then
3563
3564     cpuflags="-mcpu=$cpu"
3565
3566 elif enabled arm; then
3567
3568     check_arm_arch() {
3569         check_cpp_condition stddef.h \
3570             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3571             $cpuflags
3572     }
3573
3574     probe_arm_arch() {
3575         if   check_arm_arch 4;        then echo armv4;
3576         elif check_arm_arch 4T;       then echo armv4t;
3577         elif check_arm_arch 5;        then echo armv5;
3578         elif check_arm_arch 5E;       then echo armv5e;
3579         elif check_arm_arch 5T;       then echo armv5t;
3580         elif check_arm_arch 5TE;      then echo armv5te;
3581         elif check_arm_arch 5TEJ;     then echo armv5te;
3582         elif check_arm_arch 6;        then echo armv6;
3583         elif check_arm_arch 6J;       then echo armv6j;
3584         elif check_arm_arch 6K;       then echo armv6k;
3585         elif check_arm_arch 6Z;       then echo armv6z;
3586         elif check_arm_arch 6ZK;      then echo armv6zk;
3587         elif check_arm_arch 6T2;      then echo armv6t2;
3588         elif check_arm_arch 7;        then echo armv7;
3589         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3590         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3591         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3592         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3593         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3594         fi
3595     }
3596
3597     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3598
3599     case $cpu in
3600         armv*)
3601             cpuflags="-march=$cpu"
3602             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3603         ;;
3604         *)
3605             cpuflags="-mcpu=$cpu"
3606             case $cpu in
3607                 cortex-a*)                               subarch=armv7a  ;;
3608                 cortex-r*)                               subarch=armv7r  ;;
3609                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3610                 arm11*)                                  subarch=armv6   ;;
3611                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3612                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3613                 *)                             subarch=$(probe_arm_arch) ;;
3614             esac
3615         ;;
3616     esac
3617
3618     case "$subarch" in
3619         armv5t*)    enable fast_clz                ;;
3620         armv[6-8]*)
3621             enable fast_clz
3622             disabled fast_unaligned || enable fast_unaligned
3623             ;;
3624     esac
3625
3626 elif enabled avr32; then
3627
3628     case $cpu in
3629         ap7[02]0[0-2])
3630             subarch="avr32_ap"
3631             cpuflags="-mpart=$cpu"
3632         ;;
3633         ap)
3634             subarch="avr32_ap"
3635             cpuflags="-march=$cpu"
3636         ;;
3637         uc3[ab]*)
3638             subarch="avr32_uc"
3639             cpuflags="-mcpu=$cpu"
3640         ;;
3641         uc)
3642             subarch="avr32_uc"
3643             cpuflags="-march=$cpu"
3644         ;;
3645     esac
3646
3647 elif enabled bfin; then
3648
3649     cpuflags="-mcpu=$cpu"
3650
3651 elif enabled mips; then
3652
3653     cpuflags="-march=$cpu"
3654
3655     case $cpu in
3656         24kc)
3657             disable mipsfpu
3658             disable mipsdspr1
3659             disable mipsdspr2
3660         ;;
3661         24kf*)
3662             disable mipsdspr1
3663             disable mipsdspr2
3664         ;;
3665         24kec|34kc|1004kc)
3666             disable mipsfpu
3667             disable mipsdspr2
3668         ;;
3669         24kef*|34kf*|1004kf*)
3670             disable mipsdspr2
3671         ;;
3672         74kc)
3673             disable mipsfpu
3674         ;;
3675     esac
3676
3677 elif enabled ppc; then
3678
3679     disable ldbrx
3680
3681     case $(tolower $cpu) in
3682         601|ppc601|powerpc601)
3683             cpuflags="-mcpu=601"
3684             disable altivec
3685         ;;
3686         603*|ppc603*|powerpc603*)
3687             cpuflags="-mcpu=603"
3688             disable altivec
3689         ;;
3690         604*|ppc604*|powerpc604*)
3691             cpuflags="-mcpu=604"
3692             disable altivec
3693         ;;
3694         g3|75*|ppc75*|powerpc75*)
3695             cpuflags="-mcpu=750"
3696             disable altivec
3697         ;;
3698         g4|745*|ppc745*|powerpc745*)
3699             cpuflags="-mcpu=7450"
3700         ;;
3701         74*|ppc74*|powerpc74*)
3702             cpuflags="-mcpu=7400"
3703         ;;
3704         g5|970|ppc970|powerpc970)
3705             cpuflags="-mcpu=970"
3706         ;;
3707         power[3-7]*)
3708             cpuflags="-mcpu=$cpu"
3709         ;;
3710         cell)
3711             cpuflags="-mcpu=cell"
3712             enable ldbrx
3713         ;;
3714         e500mc)
3715             cpuflags="-mcpu=e500mc"
3716             disable altivec
3717         ;;
3718         e500v2)
3719             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3720             disable altivec
3721             disable dcbzl
3722         ;;
3723         e500)
3724             cpuflags="-mcpu=8540 -mhard-float"
3725             disable altivec
3726             disable dcbzl
3727         ;;
3728     esac
3729
3730 elif enabled sparc; then
3731
3732     case $cpu in
3733         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3734             cpuflags="-mcpu=$cpu"
3735         ;;
3736         ultrasparc*|niagara[234])
3737             cpuflags="-mcpu=$cpu"
3738         ;;
3739     esac
3740
3741 elif enabled x86; then
3742
3743     case $cpu in
3744         i[345]86|pentium)
3745             cpuflags="-march=$cpu"
3746             disable mmx
3747         ;;
3748         # targets that do NOT support nopl and conditional mov (cmov)
3749         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3750             cpuflags="-march=$cpu"
3751             disable i686
3752         ;;
3753         # targets that do support nopl and conditional mov (cmov)
3754         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3755         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3756             cpuflags="-march=$cpu"
3757             enable i686
3758             enable fast_cmov
3759         ;;
3760         # targets that do support conditional mov but on which it's slow
3761         pentium4|pentium4m|prescott|nocona)
3762             cpuflags="-march=$cpu"
3763             enable i686
3764             disable fast_cmov
3765         ;;
3766     esac
3767
3768 fi
3769
3770 if [ "$cpu" != generic ]; then
3771     add_cflags  $cpuflags
3772     add_asflags $cpuflags
3773 fi
3774
3775 # compiler sanity check
3776 check_exec <<EOF
3777 int main(void){ return 0; }
3778 EOF
3779 if test "$?" != 0; then
3780     echo "$cc is unable to create an executable file."
3781     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3782         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3783         echo "Only do this if you know what cross compiling means."
3784     fi
3785     die "C compiler test failed."
3786 fi
3787
3788 add_cppflags -D_ISOC99_SOURCE
3789 add_cxxflags -D__STDC_CONSTANT_MACROS
3790 check_cflags -std=c99
3791 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3792 #include <stdlib.h>
3793 EOF
3794 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3795 #include <stdlib.h>
3796 EOF
3797
3798 add_host_cppflags -D_ISOC99_SOURCE
3799 check_host_cflags -std=c99
3800 check_host_cflags -Wall
3801 check_host_cflags -O3
3802
3803 check_64bit(){
3804     arch32=$1
3805     arch64=$2
3806     expr=$3
3807     check_code cc "" "int test[2*($expr) - 1]" &&
3808         subarch=$arch64 || subarch=$arch32
3809 }
3810
3811 case "$arch" in
3812     aarch64|alpha|ia64)
3813         spic=$shared
3814     ;;
3815     mips)
3816         check_64bit mips mips64 '_MIPS_SIM > 1'
3817         spic=$shared
3818     ;;
3819     parisc)
3820         check_64bit parisc parisc64 'sizeof(void *) > 4'
3821         spic=$shared
3822     ;;
3823     ppc)
3824         check_64bit ppc ppc64 'sizeof(void *) > 4'
3825         spic=$shared
3826     ;;
3827     s390)
3828         check_64bit s390 s390x 'sizeof(void *) > 4'
3829         spic=$shared
3830     ;;
3831     sparc)
3832         check_64bit sparc sparc64 'sizeof(void *) > 4'
3833         spic=$shared
3834     ;;
3835     x86)
3836         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3837         if test "$subarch" = "x86_64"; then
3838             spic=$shared
3839         fi
3840     ;;
3841     ppc)
3842         check_cc <<EOF && subarch="ppc64"
3843         int test[(int)sizeof(char*) - 7];
3844 EOF
3845     ;;
3846 esac
3847
3848 enable $subarch
3849 enabled spic && enable_weak pic
3850
3851 # OS specific
3852 case $target_os in
3853     aix)
3854         SHFLAGS=-shared
3855         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3856         enabled shared && add_ldflags -Wl,-brtl
3857         ;;
3858     haiku)
3859         prefix_default="/boot/common"
3860         network_extralibs="-lnetwork"
3861         host_libs=
3862         ;;
3863     sunos)
3864         SHFLAGS='-shared -Wl,-h,$$(@F)'
3865         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3866         network_extralibs="-lsocket -lnsl"
3867         # When using suncc to build, the Solaris linker will mark
3868         # an executable with each instruction set encountered by
3869         # the Solaris assembler.  As our libraries contain their own
3870         # guards for processor-specific code, instead suppress
3871         # generation of the HWCAPS ELF section on Solaris x86 only.
3872         enabled_all suncc x86 &&
3873             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3874             add_ldflags -Wl,-M,mapfile
3875         nm_default='nm -P -g'
3876         ;;
3877     netbsd)
3878         disable symver
3879         oss_indev_extralibs="-lossaudio"
3880         oss_outdev_extralibs="-lossaudio"
3881         enabled gcc || check_ldflags -Wl,-zmuldefs
3882         ;;
3883     openbsd|bitrig)
3884         disable symver
3885         SHFLAGS='-shared'
3886         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3887         SLIB_INSTALL_LINKS=
3888         oss_indev_extralibs="-lossaudio"
3889         oss_outdev_extralibs="-lossaudio"
3890         ;;
3891     dragonfly)
3892         disable symver
3893         ;;
3894     freebsd)
3895         ;;
3896     bsd/os)
3897         add_extralibs -lpoll -lgnugetopt
3898         strip="strip -d"
3899         ;;
3900     darwin)
3901         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3902         enabled ppc && add_asflags -force_cpusubtype_ALL
3903         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3904         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3905         strip="${strip} -x"
3906         add_ldflags -Wl,-dynamic,-search_paths_first
3907         SLIBSUF=".dylib"
3908         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3909         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3910         objformat="macho"
3911         enabled x86_64 && objformat="macho64"
3912         enabled_any pic shared ||
3913             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3914         ;;
3915     mingw32*)
3916         if test $target_os = "mingw32ce"; then
3917             disable network
3918         else
3919             target_os=mingw32
3920         fi
3921         LIBTARGET=i386
3922         if enabled x86_64; then
3923             LIBTARGET="i386:x86-64"
3924         elif enabled arm; then
3925             LIBTARGET=arm-wince
3926         fi
3927         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3928         check_ldflags -Wl,--nxcompat
3929         check_ldflags -Wl,--dynamicbase
3930         shlibdir_default="$bindir_default"
3931         SLIBPREF=""
3932         SLIBSUF=".dll"
3933         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3934         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3935         dlltool="${cross_prefix}dlltool"
3936         if check_cmd lib.exe -list; then
3937             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3938             if enabled x86_64; then
3939                 LIBTARGET=x64
3940             fi
3941         elif check_cmd $dlltool --version; then
3942             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3943         fi
3944         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3945         SLIB_INSTALL_LINKS=
3946         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3947         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3948         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3949         objformat="win32"
3950         ranlib=:
3951         enable dos_paths
3952         ;;
3953     win32|win64)
3954         disable symver
3955         if enabled shared; then
3956             # Link to the import library instead of the normal static library
3957             # for shared libs.
3958             LD_LIB='%.lib'
3959             # Cannot build both shared and static libs with MSVC or icl.
3960             disable static
3961         fi
3962         shlibdir_default="$bindir_default"
3963         SLIBPREF=""
3964         SLIBSUF=".dll"
3965         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3966         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3967         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3968         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3969         SLIB_INSTALL_LINKS=
3970         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3971         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3972         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3973         objformat="win32"
3974         ranlib=:
3975         enable dos_paths
3976         ;;
3977     cygwin*)
3978         target_os=cygwin
3979         shlibdir_default="$bindir_default"
3980         SLIBPREF="cyg"
3981         SLIBSUF=".dll"
3982         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3983         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3984         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3985         SLIB_INSTALL_LINKS=
3986         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3987         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3988         objformat="win32"
3989         enable dos_paths
3990         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3991         ;;
3992     *-dos|freedos|opendos)
3993         network_extralibs="-lsocket"
3994         objformat="coff"
3995         enable dos_paths
3996         add_cppflags -U__STRICT_ANSI__
3997         ;;
3998     linux)
3999         enable dv1394
4000         ;;
4001     irix*)
4002         target_os=irix
4003         ranlib="echo ignoring ranlib"
4004         ;;
4005     os/2*)
4006         strip="lxlite -CS"
4007         ln_s="cp -f"
4008         objformat="aout"
4009         add_cppflags -D_GNU_SOURCE
4010         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4011         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4012         LIBSUF="_s.a"
4013         SLIBPREF=""
4014         SLIBSUF=".dll"
4015         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4016         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4017         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4018             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4019             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4020             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4021             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4022             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4023         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4024             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4025         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4026         enable dos_paths
4027         enable_weak os2threads
4028         ;;
4029     gnu/kfreebsd)
4030         add_cppflags -D_BSD_SOURCE
4031         ;;
4032     gnu)
4033         ;;
4034     qnx)
4035         add_cppflags -D_QNX_SOURCE
4036         network_extralibs="-lsocket"
4037         ;;
4038     symbian)
4039         SLIBSUF=".dll"
4040         enable dos_paths
4041         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4042         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4043         add_ldflags -Wl,--target1-abs,--no-undefined \
4044                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4045                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4046         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4047                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4048                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4049         ;;
4050     osf1)
4051         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4052         ;;
4053     minix)
4054         ;;
4055     plan9)
4056         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4057                      -D_REENTRANT_SOURCE        \
4058                      -D_RESEARCH_SOURCE         \
4059                      -DFD_SETSIZE=96            \
4060                      -DHAVE_SOCK_OPTS
4061         add_compat strtod.o strtod=avpriv_strtod
4062         network_extralibs='-lbsd'
4063         exeobjs=compat/plan9/main.o
4064         disable ffserver
4065         cp_f='cp'
4066         ;;
4067     none)
4068         ;;
4069     *)
4070         die "Unknown OS '$target_os'."
4071         ;;
4072 esac
4073
4074 # determine libc flavour
4075
4076 probe_libc(){
4077     pfx=$1
4078     pfx_no_=${pfx%_}
4079     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4080     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4081         eval ${pfx}libc_type=uclibc
4082         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4083     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4084         eval ${pfx}libc_type=glibc
4085         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4086     # MinGW headers can be installed on Cygwin, so check for newlib first.
4087     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4088         eval ${pfx}libc_type=newlib
4089         add_${pfx}cppflags -U__STRICT_ANSI__
4090     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4091     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4092         eval ${pfx}libc_type=mingw64
4093         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4094             add_compat msvcrt/snprintf.o
4095             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4096         fi
4097         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4098         eval test \$${pfx_no_}cc_type = "gcc" &&
4099             add_${pfx}cppflags -D__printf__=__gnu_printf__
4100     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4101          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4102         eval ${pfx}libc_type=mingw32
4103         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4104             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4105             die "ERROR: MinGW32 runtime version must be >= 3.15."
4106         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4107         eval test \$${pfx_no_}cc_type = "gcc" &&
4108             add_${pfx}cppflags -D__printf__=__gnu_printf__
4109     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4110         eval ${pfx}libc_type=msvcrt
4111         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4112         # 0x601 by default unless something else is set by the user.
4113         # This can easily lead to us detecting functions only present
4114         # in such new versions and producing binaries requiring windows 7.0.
4115         # Therefore explicitly set the default to XP unless the user has
4116         # set something else on the command line.
4117         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4118             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4119     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4120         eval ${pfx}libc_type=klibc
4121     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4122         eval ${pfx}libc_type=bionic
4123     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4124         eval ${pfx}libc_type=solaris
4125         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4126     fi
4127 }
4128
4129 probe_libc
4130 test -n "$libc_type" && enable libc_$libc_type
4131 probe_libc host_
4132 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4133
4134 case $libc_type in
4135     bionic)
4136         add_compat strtod.o strtod=avpriv_strtod
4137         ;;
4138     msvcrt)
4139         add_compat strtod.o strtod=avpriv_strtod
4140         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4141                                      _snprintf=avpriv_snprintf  \
4142                                      vsnprintf=avpriv_vsnprintf
4143         ;;
4144 esac
4145
4146 # hacks for compiler/libc/os combinations
4147
4148 if enabled_all tms470 libc_glibc; then
4149     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4150     add_cppflags -D__USER_LABEL_PREFIX__=
4151     add_cppflags -D__builtin_memset=memset
4152     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4153     add_cflags   -pds=48    # incompatible redefinition of macro
4154 fi
4155
4156 if enabled_all ccc libc_glibc; then
4157     add_ldflags -Wl,-z,now  # calls to libots crash without this
4158 fi
4159
4160 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4161     add_cppflags '-I\$(SRC_PATH)/compat/float'
4162
4163 esc(){
4164     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4165 }
4166
4167 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4168
4169 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4170
4171 set_default $PATHS_LIST
4172 set_default nm
4173
4174 # we need to build at least one lib type
4175 if ! enabled_any static shared; then
4176     cat <<EOF
4177 At least one library type must be built.
4178 Specify --enable-static to build the static libraries or --enable-shared to
4179 build the shared libraries as well. To only build the shared libraries specify
4180 --disable-static in addition to --enable-shared.
4181 EOF
4182     exit 1;
4183 fi
4184
4185 die_license_disabled() {
4186     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4187 }
4188
4189 die_license_disabled_gpl() {
4190     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4191 }
4192
4193 die_license_disabled gpl frei0r
4194 die_license_disabled gpl libcdio
4195 die_license_disabled gpl libutvideo
4196 die_license_disabled gpl libvidstab
4197 die_license_disabled gpl libx264
4198 die_license_disabled gpl libx265
4199 die_license_disabled gpl libxavs
4200 die_license_disabled gpl libxvid
4201 die_license_disabled gpl libzvbi
4202 die_license_disabled gpl x11grab
4203
4204 die_license_disabled nonfree libaacplus
4205 die_license_disabled nonfree libfaac
4206 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4207 enabled gpl && die_license_disabled_gpl nonfree openssl
4208
4209 die_license_disabled version3 libopencore_amrnb
4210 die_license_disabled version3 libopencore_amrwb
4211 die_license_disabled version3 libvo_aacenc
4212 die_license_disabled version3 libvo_amrwbenc
4213
4214 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4215
4216 disabled optimizations || check_cflags -fomit-frame-pointer
4217
4218 enable_weak_pic() {
4219     disabled pic && return
4220     enable pic
4221     add_cppflags -DPIC
4222     case "$target_os" in
4223     mingw*|cygwin*)
4224         ;;
4225     *)
4226         add_cflags -fPIC
4227         ;;
4228     esac
4229     add_asflags  -fPIC
4230 }
4231
4232 enabled pic && enable_weak_pic
4233
4234 check_cc <<EOF || die "Symbol mangling check failed."
4235 int ff_extern;
4236 EOF
4237 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4238 extern_prefix=${sym%%ff_extern*}
4239
4240 check_cc <<EOF && enable_weak inline_asm
4241 void foo(void) { __asm__ volatile ("" ::); }
4242 EOF
4243
4244 _restrict=
4245 for restrict_keyword in restrict __restrict__ __restrict; do
4246     check_cc <<EOF && _restrict=$restrict_keyword && break
4247 void foo(char * $restrict_keyword p);
4248 EOF
4249 done
4250
4251 check_cc <<EOF && enable pragma_deprecated
4252 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4253 EOF
4254
4255 check_cc <<EOF && enable attribute_packed
4256 struct { int x; } __attribute__((packed)) x;
4257 EOF
4258
4259 check_cc <<EOF && enable attribute_may_alias
4260 union { int x; } __attribute__((may_alias)) x;
4261 EOF
4262
4263 check_cc <<EOF || die "endian test failed"
4264 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4265 EOF
4266 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4267
4268 check_inline_asm inline_asm_labels '"1:\n"'
4269
4270 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4271
4272 if enabled aarch64; then
4273     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4274     # internal assembler in clang 3.3 does not support this instruction
4275     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4276     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4277
4278     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4279
4280 elif enabled alpha; then
4281
4282     check_cflags -mieee
4283
4284 elif enabled arm; then
4285
4286     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4287 float func(float a, float b){ return a+b; }
4288 EOF
4289
4290     enabled thumb && check_cflags -mthumb || check_cflags -marm
4291     nogas=die
4292
4293     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4294         enable vfp_args
4295     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4296         case "${cross_prefix:-$cc}" in
4297             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4298             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4299 __asm__ (".eabi_attribute 28, 1");
4300 int main(void) { return 0; }
4301 EOF
4302         esac
4303         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4304     fi
4305
4306     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4307     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4308     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4309     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4310     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4311     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4312
4313     [ $target_os = linux ] ||
4314         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4315             $ARCH_EXT_LIST_ARM
4316
4317     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4318
4319     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4320
4321 elif enabled mips; then
4322
4323     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4324     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4325      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4326     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4327      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4328     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4329      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4330     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4331      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4332
4333 elif enabled parisc; then
4334
4335     if enabled gcc; then
4336         case $($cc -dumpversion) in
4337             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4338         esac
4339     fi
4340
4341 elif enabled ppc; then
4342
4343     enable local_aligned_8 local_aligned_16 local_aligned_32
4344
4345     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4346     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4347     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4348     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4349
4350     # AltiVec flags: The FSF version of GCC differs from the Apple version
4351     if enabled altivec; then
4352         if ! enabled_any pic ppc64; then
4353             nogas=warn
4354         fi
4355         check_cflags -maltivec -mabi=altivec &&
4356         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4357         check_cflags -faltivec
4358
4359         # check if our compiler supports Motorola AltiVec C API
4360         check_cc <<EOF || disable altivec
4361 $inc_altivec_h
4362 int main(void) {
4363     vector signed int v1 = (vector signed int) { 0 };
4364     vector signed int v2 = (vector signed int) { 1 };
4365     v1 = vec_add(v1, v2);
4366     return 0;
4367 }
4368 EOF
4369
4370         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4371     fi
4372
4373 elif enabled x86; then
4374
4375     check_builtin rdtsc    intrin.h   "__rdtsc()"
4376     check_builtin mm_empty mmintrin.h "_mm_empty()"
4377
4378     enable local_aligned_8 local_aligned_16 local_aligned_32
4379
4380     # check whether EBP is available on x86
4381     # As 'i' is stored on the stack, this program will crash
4382     # if the base pointer is used to access it because the
4383     # base pointer is cleared in the inline assembly code.
4384     check_exec_crash <<EOF && enable ebp_available
4385 volatile int i=0;
4386 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4387 return i;
4388 EOF
4389
4390     # check whether EBX is available on x86
4391     check_inline_asm ebx_available '""::"b"(0)' &&
4392         check_inline_asm ebx_available '"":::"%ebx"'
4393
4394     # check whether xmm clobbers are supported
4395     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4396
4397     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4398         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4399
4400     # check whether binutils is new enough to compile AVX/SSSE3/MMXEXT
4401     enabled avx    && check_inline_asm avx_inline    '"vextractf128 $1, %ymm0, %xmm1"'
4402     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4403     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4404
4405     if ! disabled_any asm mmx yasm; then
4406         if check_cmd $yasmexe --version; then
4407             enabled x86_64 && yasm_extra="-m amd64"
4408             yasm_debug="-g dwarf2"
4409         elif check_cmd nasm -v; then
4410             yasmexe=nasm
4411             yasm_debug="-g -F dwarf"
4412             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4413         fi
4414
4415         YASMFLAGS="-f $objformat $yasm_extra"
4416         enabled pic               && append YASMFLAGS "-DPIC"
4417         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4418         case "$objformat" in
4419             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4420         esac
4421
4422         check_yasm "movbe ecx, [5]" && enable yasm ||
4423             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4424         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4425         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4426         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4427         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4428         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4429         check_yasm "CPU amdnop" || disable cpunop
4430     fi
4431
4432     case "$cpu" in
4433         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4434             disable fast_clz
4435         ;;
4436     esac
4437
4438 fi
4439
4440 if enabled asm; then
4441     as=${gas:=$as}
4442     check_as <<EOF && enable gnu_as || \
4443         $nogas "GNU assembler not found, install gas-preprocessor"
4444 .macro m n
4445 \n: .int 0
4446 .endm
4447 m x
4448 EOF
4449 fi
4450
4451 check_ldflags -Wl,--as-needed
4452
4453 if check_func dlopen; then
4454     ldl=
4455 elif check_func dlopen -ldl; then
4456     ldl=-ldl
4457 fi
4458
4459 if ! disabled network; then
4460     check_func getaddrinfo $network_extralibs
4461     check_func getservbyport $network_extralibs
4462     check_func inet_aton $network_extralibs
4463
4464     check_type netdb.h "struct addrinfo"
4465     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4466     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4467     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4468     check_type poll.h "struct pollfd"
4469     check_type netinet/sctp.h "struct sctp_event_subscribe"
4470     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4471     check_type netinet/in.h "struct sockaddr_in6"
4472     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4473     check_type "sys/types.h sys/socket.h" socklen_t
4474
4475     # Prefer arpa/inet.h over winsock2
4476     if check_header arpa/inet.h ; then
4477         check_func closesocket
4478     elif check_header winsock2.h ; then
4479         check_func_headers winsock2.h closesocket -lws2 &&
4480             network_extralibs="-lws2" ||
4481         { check_func_headers winsock2.h closesocket -lws2_32 &&
4482             network_extralibs="-lws2_32"; } || disable winsock2_h network
4483         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4484
4485         check_type ws2tcpip.h socklen_t
4486         check_type ws2tcpip.h "struct addrinfo"
4487         check_type ws2tcpip.h "struct group_source_req"
4488         check_type ws2tcpip.h "struct ip_mreq_source"
4489         check_type ws2tcpip.h "struct ipv6_mreq"
4490         check_type winsock2.h "struct pollfd"
4491         check_struct winsock2.h "struct sockaddr" sa_len
4492         check_type ws2tcpip.h "struct sockaddr_in6"
4493         check_type ws2tcpip.h "struct sockaddr_storage"
4494     else
4495         disable network
4496     fi
4497 fi
4498
4499 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4500 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4501 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4502 check_builtin sarestart signal.h "SA_RESTART"
4503 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4504
4505 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4506 check_func  ${malloc_prefix}memalign            && enable memalign
4507 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4508
4509 check_func  access
4510 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4511 check_func  fcntl
4512 check_func  fork
4513 check_func  gethrtime
4514 check_func  getopt
4515 check_func  getrusage
4516 check_func  gettimeofday
4517 check_func  isatty
4518 check_func  localtime_r
4519 check_func  mach_absolute_time
4520 check_func  mkstemp
4521 check_func  mmap
4522 check_func  mprotect
4523 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4524 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4525 check_func  sched_getaffinity
4526 check_func  setrlimit
4527 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4528 check_func  strerror_r
4529 check_func  sysconf
4530 check_func  sysctl
4531 check_func  usleep
4532
4533 check_func_headers conio.h kbhit
4534 check_func_headers io.h setmode
4535 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4536 check_func_headers stdlib.h getenv
4537
4538 check_func_headers windows.h CoTaskMemFree -lole32
4539 check_func_headers windows.h GetProcessAffinityMask
4540 check_func_headers windows.h GetProcessTimes
4541 check_func_headers windows.h GetSystemTimeAsFileTime
4542 check_func_headers windows.h MapViewOfFile
4543 check_func_headers windows.h PeekNamedPipe
4544 check_func_headers windows.h SetConsoleTextAttribute
4545 check_func_headers windows.h Sleep
4546 check_func_headers windows.h VirtualAlloc
4547 check_func_headers glob.h glob
4548 enabled xlib &&
4549     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4550
4551 check_header cl/cl.h
4552 check_header direct.h
4553 check_header dlfcn.h
4554 check_header dxva.h
4555 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4556 check_header io.h
4557 check_header libcrystalhd/libcrystalhd_if.h
4558 check_header mach/mach_time.h
4559 check_header malloc.h
4560 check_header poll.h
4561 check_header sys/mman.h
4562 check_header sys/param.h
4563 check_header sys/resource.h
4564 check_header sys/select.h
4565 check_header sys/time.h
4566 check_header sys/un.h
4567 check_header termios.h
4568 check_header unistd.h
4569 check_header vdpau/vdpau.h
4570 check_header vdpau/vdpau_x11.h
4571 check_header VideoDecodeAcceleration/VDADecoder.h
4572 check_header windows.h
4573 check_header X11/extensions/XvMClib.h
4574 check_header asm/types.h
4575
4576 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4577 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4578 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4579
4580 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4581
4582 if ! disabled w32threads && ! enabled pthreads; then
4583     check_func_headers "windows.h process.h" _beginthreadex &&
4584         enable w32threads || disable w32threads
4585 fi
4586
4587 # check for some common methods of building with pthread support
4588 # do this before the optional library checks as some of them require pthreads
4589 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4590     enable pthreads
4591     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4592         add_cflags -pthread
4593         add_extralibs -pthread
4594     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4595         add_cflags -pthreads
4596         add_extralibs -pthreads
4597     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4598         add_cflags -ldl -pthread
4599         add_extralibs -ldl -pthread
4600     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4601         add_extralibs -lpthreadGC2
4602     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4603         :
4604     elif ! check_func pthread_join && ! check_func pthread_create; then
4605         disable pthreads
4606     fi
4607     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4608 fi
4609
4610
4611 if enabled pthreads; then
4612   check_func pthread_cancel
4613 fi
4614
4615 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4616 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4617
4618 check_lib math.h sin -lm && LIBM="-lm"
4619 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4620
4621 atan2f_args=2
4622 ldexpf_args=2
4623 powf_args=2
4624
4625 for func in $MATH_FUNCS; do
4626     eval check_mathfunc $func \${${func}_args:-1}
4627 done
4628
4629 # these are off by default, so fail if requested and not available
4630 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4631 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4632                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4633                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4634 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4635 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4636 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4637 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4638 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4639 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4640 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4641 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4642 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4643 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4644                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4645                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4646 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4647 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4648 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4649 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"
4650 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4651 enabled fontconfig        && enable libfontconfig
4652 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4653 enabled libfreetype       && require_libfreetype
4654 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4655 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4656                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4657                                done || die "ERROR: libgsm not found"; }
4658 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4659 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4660 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4661 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4662 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4663 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4664 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4665 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4666                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4667                                die "ERROR: libopenjpeg not found"; }
4668 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4669 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4670 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4671 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4672 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4673 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4674 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4675 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4676 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4677 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4678     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4679     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4680 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4681 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4682                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4683                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4684 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4685 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4686 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4687 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4688 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4689 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4690 enabled libvpx            && {
4691     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4692                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4693     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 ||
4694                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4695     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4696     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; } }
4697 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4698 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4699 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4700                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4701                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4702 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4703                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4704                                die "ERROR: libx265 version must be >= 13."; }
4705 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4706 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4707 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4708 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4709 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4710                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4711                                die "ERROR: openal not found"; } &&
4712                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4713                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4714 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4715                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4716                                die "ERROR: opencl not found"; } &&
4717                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4718                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4719                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4720 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4721                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4722                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4723                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4724                                die "ERROR: opengl not found."
4725                              }
4726 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4727                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4728                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4729                                die "ERROR: openssl not found"; }
4730 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4731
4732 if enabled gnutls; then
4733     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4734     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4735 fi
4736
4737 # libdc1394 check
4738 if enabled libdc1394; then
4739     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4740         enable libdc1394_2; } ||
4741     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4742         enable libdc1394_1; } ||
4743     die "ERROR: No version of libdc1394 found "
4744 fi
4745
4746 SDL_CONFIG="${cross_prefix}sdl-config"
4747 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4748     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4749     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4750     enable sdl
4751 else
4752   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4753     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4754     sdl_libs=$("${SDL_CONFIG}" --libs)
4755     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4756     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4757     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4758     enable sdl
4759   fi
4760 fi
4761 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4762
4763 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4764 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4765 perl -v            > /dev/null 2>&1 && enable perl      || disable perl