build: move ebur128 swr dep to configure.
[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 decoding via libopus [no]
225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
226   --enable-libquvi         enable quvi input via libquvi [no]
227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
230   --enable-libsoxr         enable Include libsoxr resampling [no]
231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
232   --enable-libssh          enable SFTP protocol via libssh [no]
233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
234   --enable-libtheora       enable Theora encoding via libtheora [no]
235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
238   --enable-libvidstab      enable video stabilization using vid.stab [no]
239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
242                            native implementation exists [no]
243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
245   --enable-libwebp         enable WebP encoding via libwebp [no]
246   --enable-libx264         enable H.264 encoding via x264 [no]
247   --enable-libx265         enable HEVC encoding via x265 [no]
248   --enable-libxavs         enable AVS encoding via xavs [no]
249   --enable-libxvid         enable Xvid encoding via xvidcore,
250                            native MPEG-4/Xvid encoder exists [no]
251   --enable-libzmq          enable message passing via libzmq [no]
252   --enable-libzvbi         enable teletext support via libzvbi [no]
253   --enable-decklink        enable Blackmagick DeckLink output [no]
254   --enable-openal          enable OpenAL 1.1 capture support [no]
255   --enable-opencl          enable OpenCL code
256   --enable-opengl          enable OpenGL rendering [no]
257   --enable-openssl         enable openssl [no]
258   --enable-x11grab         enable X11 grabbing [no]
259   --disable-xlib           disable xlib [autodetect]
260   --disable-zlib           disable zlib [autodetect]
261
262 Toolchain options:
263   --arch=ARCH              select architecture [$arch]
264   --cpu=CPU                select the minimum required CPU (affects
265                            instruction selection, may crash on older CPUs)
266   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
267   --progs-suffix=SUFFIX    program name suffix []
268   --enable-cross-compile   assume a cross-compiler is used
269   --sysroot=PATH           root of cross-build tree
270   --sysinclude=PATH        location of cross-build system headers
271   --target-os=OS           compiler targets OS [$target_os]
272   --target-exec=CMD        command to run executables on target
273   --target-path=DIR        path to view of build directory on target
274   --target-samples=DIR     path to samples directory on target
275   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
276   --toolchain=NAME         set tool defaults according to NAME
277   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
278   --nm=NM                  use nm tool NM [$nm_default]
279   --ar=AR                  use archive tool AR [$ar_default]
280   --as=AS                  use assembler AS [$as_default]
281   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
282   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
283   --cc=CC                  use C compiler CC [$cc_default]
284   --cxx=CXX                use C compiler CXX [$cxx_default]
285   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
286   --ld=LD                  use linker LD [$ld_default]
287   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
288   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
289   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
290   --host-cc=HOSTCC         use host C compiler HOSTCC
291   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
292   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
293   --host-ld=HOSTLD         use host linker HOSTLD
294   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
295   --host-libs=HLIBS        use libs HLIBS when linking for host
296   --host-os=OS             compiler host OS [$target_os]
297   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
298   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
299   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
300   --extra-libs=ELIBS       add ELIBS [$ELIBS]
301   --extra-version=STRING   version string suffix []
302   --optflags=OPTFLAGS      override optimization-related compiler flags
303   --build-suffix=SUFFIX    library name suffix []
304   --enable-pic             build position-independent code
305   --enable-thumb           compile for Thumb instruction set
306   --enable-lto             use link-time optimization
307
308 Advanced options (experts only):
309   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
310   --disable-symver         disable symbol versioning
311   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
312   --disable-safe-bitstream-reader
313                            disable buffer boundary checking in bitreaders
314                            (faster, but may crash)
315   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
316   --enable-sram            allow use of on-chip SRAM
317
318 Optimization options (experts only):
319   --disable-asm            disable all assembler optimizations
320   --disable-altivec        disable AltiVec optimizations
321   --disable-amd3dnow       disable 3DNow! optimizations
322   --disable-amd3dnowext    disable 3DNow! extended optimizations
323   --disable-mmx            disable MMX optimizations
324   --disable-mmxext         disable MMXEXT optimizations
325   --disable-sse            disable SSE optimizations
326   --disable-sse2           disable SSE2 optimizations
327   --disable-sse3           disable SSE3 optimizations
328   --disable-ssse3          disable SSSE3 optimizations
329   --disable-sse4           disable SSE4 optimizations
330   --disable-sse42          disable SSE4.2 optimizations
331   --disable-avx            disable AVX optimizations
332   --disable-xop            disable XOP optimizations
333   --disable-fma3           disable FMA3 optimizations
334   --disable-fma4           disable FMA4 optimizations
335   --disable-avx2           disable AVX2 optimizations
336   --disable-armv5te        disable armv5te optimizations
337   --disable-armv6          disable armv6 optimizations
338   --disable-armv6t2        disable armv6t2 optimizations
339   --disable-vfp            disable VFP optimizations
340   --disable-neon           disable NEON optimizations
341   --disable-inline-asm     disable use of inline assembler
342   --disable-yasm           disable use of yasm assembler
343   --disable-mips32r2       disable MIPS32R2 optimizations
344   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
345   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
346   --disable-mipsfpu        disable floating point MIPS optimizations
347   --disable-fast-unaligned consider unaligned accesses slow
348
349 Developer options (useful when working on FFmpeg itself):
350   --disable-debug          disable debugging symbols
351   --enable-debug=LEVEL     set the debug level [$debuglevel]
352   --disable-optimizations  disable compiler optimizations
353   --enable-extra-warnings  enable more compiler warnings
354   --disable-stripping      disable stripping of executables and shared libraries
355   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
356                            2 causes a slowdown at runtime.
357   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
358   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
359                            leaks and errors, using the specified valgrind binary.
360                            Cannot be combined with --target-exec
361   --enable-ftrapv          Trap arithmetic overflows
362   --samples=PATH           location of test samples for FATE, if not set use
363                            \$FATE_SAMPLES at make invocation time.
364   --enable-neon-clobber-test check NEON registers for clobbering (should be
365                            used only for debugging purposes)
366   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
367                            should be used only for debugging purposes)
368   --enable-random          randomly enable/disable components
369   --disable-random
370   --enable-random=LIST     randomly enable/disable specific components or
371   --disable-random=LIST    component groups. LIST is a comma-separated list
372                            of NAME[:PROB] entries where NAME is a component
373                            (group) and PROB the probability associated with
374                            NAME (default 0.5).
375   --random-seed=VALUE      seed value for --enable/disable-random
376
377 NOTE: Object files are built at the place where configure is launched.
378 EOF
379   exit 0
380 }
381
382 quotes='""'
383
384 log(){
385     echo "$@" >> $logfile
386 }
387
388 log_file(){
389     log BEGIN $1
390     pr -n -t $1 >> $logfile
391     log END $1
392 }
393
394 echolog(){
395     log "$@"
396     echo "$@"
397 }
398
399 warn(){
400     log "WARNING: $*"
401     WARNINGS="${WARNINGS}WARNING: $*\n"
402 }
403
404 die(){
405     echolog "$@"
406     cat <<EOF
407
408 If you think configure made a mistake, make sure you are using the latest
409 version from Git.  If the latest version fails, report the problem to the
410 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
411 EOF
412     if disabled logging; then
413         cat <<EOF
414 Rerun configure with logging enabled (do not use --disable-logging), and
415 include the log this produces with your report.
416 EOF
417     else
418         cat <<EOF
419 Include the log file "$logfile" produced by configure as this will help
420 solving the problem.
421 EOF
422     fi
423     exit 1
424 }
425
426 # Avoid locale weirdness, besides we really just want to translate ASCII.
427 toupper(){
428     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
429 }
430
431 tolower(){
432     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
433 }
434
435 c_escape(){
436     echo "$*" | sed 's/["\\]/\\\0/g'
437 }
438
439 sh_quote(){
440     v=$(echo "$1" | sed "s/'/'\\\\''/g")
441     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
442     echo "$v"
443 }
444
445 cleanws(){
446     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
447 }
448
449 filter(){
450     pat=$1
451     shift
452     for v; do
453         eval "case $v in $pat) echo $v ;; esac"
454     done
455 }
456
457 filter_out(){
458     pat=$1
459     shift
460     for v; do
461         eval "case $v in $pat) ;; *) echo $v ;; esac"
462     done
463 }
464
465 map(){
466     m=$1
467     shift
468     for v; do eval $m; done
469 }
470
471 add_suffix(){
472     suffix=$1
473     shift
474     for v; do echo ${v}${suffix}; done
475 }
476
477 set_all(){
478     value=$1
479     shift
480     for var in $*; do
481         eval $var=$value
482     done
483 }
484
485 set_weak(){
486     value=$1
487     shift
488     for var; do
489         eval : \${$var:=$value}
490     done
491 }
492
493 sanitize_var_name(){
494     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
495 }
496
497 set_safe(){
498     var=$1
499     shift
500     eval $(sanitize_var_name "$var")='$*'
501 }
502
503 get_safe(){
504     eval echo \$$(sanitize_var_name "$1")
505 }
506
507 pushvar(){
508     for pvar in $*; do
509         eval level=\${${pvar}_level:=0}
510         eval ${pvar}_${level}="\$$pvar"
511         eval ${pvar}_level=$(($level+1))
512     done
513 }
514
515 popvar(){
516     for pvar in $*; do
517         eval level=\${${pvar}_level:-0}
518         test $level = 0 && continue
519         eval level=$(($level-1))
520         eval $pvar="\${${pvar}_${level}}"
521         eval ${pvar}_level=$level
522         eval unset ${pvar}_${level}
523     done
524 }
525
526 enable(){
527     set_all yes $*
528 }
529
530 disable(){
531     set_all no $*
532 }
533
534 enable_weak(){
535     set_weak yes $*
536 }
537
538 disable_weak(){
539     set_weak no $*
540 }
541
542 enable_safe(){
543     for var; do
544         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
545     done
546 }
547
548 disable_safe(){
549     for var; do
550         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
551     done
552 }
553
554 do_enable_deep(){
555     for var; do
556         enabled $var && continue
557         eval sel="\$${var}_select"
558         eval sgs="\$${var}_suggest"
559         pushvar var sgs
560         enable_deep $sel
561         popvar sgs
562         enable_deep_weak $sgs
563         popvar var
564     done
565 }
566
567 enable_deep(){
568     do_enable_deep $*
569     enable $*
570 }
571
572 enable_deep_weak(){
573     for var; do
574         disabled $var && continue
575         pushvar var
576         do_enable_deep $var
577         popvar var
578         enable_weak $var
579     done
580 }
581
582 enabled(){
583     test "${1#!}" = "$1" && op== || op=!=
584     eval test "x\$${1#!}" $op "xyes"
585 }
586
587 disabled(){
588     test "${1#!}" = "$1" && op== || op=!=
589     eval test "x\$${1#!}" $op "xno"
590 }
591
592 enabled_all(){
593     for opt; do
594         enabled $opt || return 1
595     done
596 }
597
598 disabled_all(){
599     for opt; do
600         disabled $opt || return 1
601     done
602 }
603
604 enabled_any(){
605     for opt; do
606         enabled $opt && return 0
607     done
608 }
609
610 disabled_any(){
611     for opt; do
612         disabled $opt && return 0
613     done
614     return 1
615 }
616
617 set_default(){
618     for opt; do
619         eval : \${$opt:=\$${opt}_default}
620     done
621 }
622
623 is_in(){
624     value=$1
625     shift
626     for var in $*; do
627         [ $var = $value ] && return 0
628     done
629     return 1
630 }
631
632 do_check_deps(){
633     for cfg; do
634         cfg="${cfg#!}"
635         enabled ${cfg}_checking && die "Circular dependency for $cfg."
636         disabled ${cfg}_checking && continue
637         enable ${cfg}_checking
638         append allopts $cfg
639
640         eval dep_all="\$${cfg}_deps"
641         eval dep_any="\$${cfg}_deps_any"
642         eval dep_sel="\$${cfg}_select"
643         eval dep_sgs="\$${cfg}_suggest"
644         eval dep_ifa="\$${cfg}_if"
645         eval dep_ifn="\$${cfg}_if_any"
646
647         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
648         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
649         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
650
651         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
652         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
653         enabled_all  $dep_all || disable $cfg
654         enabled_any  $dep_any || disable $cfg
655         disabled_any $dep_sel && disable $cfg
656
657         if enabled $cfg; then
658             enable_deep $dep_sel
659             enable_deep_weak $dep_sgs
660         fi
661
662         disable ${cfg}_checking
663     done
664 }
665
666 check_deps(){
667     unset allopts
668
669     do_check_deps "$@"
670
671     for cfg in $allopts; do
672         enabled $cfg || continue
673         eval dep_extralibs="\$${cfg}_extralibs"
674         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
675     done
676 }
677
678 print_config(){
679     pfx=$1
680     files=$2
681     shift 2
682     map 'eval echo "$v \${$v:-no}"' "$@" |
683     awk "BEGIN { split(\"$files\", files) }
684         {
685             c = \"$pfx\" toupper(\$1);
686             v = \$2;
687             sub(/yes/, 1, v);
688             sub(/no/,  0, v);
689             for (f in files) {
690                 file = files[f];
691                 if (file ~ /\\.h\$/) {
692                     printf(\"#define %s %d\\n\", c, v) >>file;
693                 } else if (file ~ /\\.asm\$/) {
694                     printf(\"%%define %s %d\\n\", c, v) >>file;
695                 } else if (file ~ /\\.mak\$/) {
696                     n = -v ? \"\" : \"!\";
697                     printf(\"%s%s=yes\\n\", n, c) >>file;
698                 } else if (file ~ /\\.texi\$/) {
699                     pre = -v ? \"\" : \"@c \";
700                     yesno = \$2;
701                     c2 = tolower(c);
702                     gsub(/_/, \"-\", c2);
703                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
704                 }
705             }
706         }"
707 }
708
709 print_enabled(){
710     suf=$1
711     shift
712     for v; do
713         enabled $v && printf "%s\n" ${v%$suf};
714     done
715 }
716
717 append(){
718     var=$1
719     shift
720     eval "$var=\"\$$var $*\""
721 }
722
723 prepend(){
724     var=$1
725     shift
726     eval "$var=\"$* \$$var\""
727 }
728
729 unique(){
730     var=$1
731     uniq_list=""
732     for tok in $(eval echo \$$var); do
733         uniq_list="$(filter_out $tok $uniq_list) $tok"
734     done
735     eval "$var=\"${uniq_list}\""
736 }
737
738 add_cppflags(){
739     append CPPFLAGS "$@"
740 }
741
742 add_cflags(){
743     append CFLAGS $($cflags_filter "$@")
744 }
745
746 add_cxxflags(){
747     append CXXFLAGS $($cflags_filter "$@")
748 }
749
750 add_asflags(){
751     append ASFLAGS $($asflags_filter "$@")
752 }
753
754 add_ldflags(){
755     append LDFLAGS $($ldflags_filter "$@")
756 }
757
758 add_stripflags(){
759     append ASMSTRIPFLAGS "$@"
760 }
761
762 add_extralibs(){
763     prepend extralibs $($ldflags_filter "$@")
764 }
765
766 add_host_cppflags(){
767     append host_cppflags "$@"
768 }
769
770 add_host_cflags(){
771     append host_cflags $($host_cflags_filter "$@")
772 }
773
774 add_host_ldflags(){
775     append host_ldflags $($host_ldflags_filter "$@")
776 }
777
778 add_compat(){
779     append compat_objs $1
780     shift
781     map 'add_cppflags -D$v' "$@"
782 }
783
784 check_cmd(){
785     log "$@"
786     "$@" >> $logfile 2>&1
787 }
788
789 check_stat(){
790     log check_stat "$@"
791     stat "$1" >> $logfile 2>&1
792 }
793
794 cc_o(){
795     eval printf '%s\\n' $CC_O
796 }
797
798 cc_e(){
799     eval printf '%s\\n' $CC_E
800 }
801
802 check_cc(){
803     log check_cc "$@"
804     cat > $TMPC
805     log_file $TMPC
806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
807 }
808
809 check_cxx(){
810     log check_cxx "$@"
811     cat > $TMPCPP
812     log_file $TMPCPP
813     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
814 }
815
816 check_oc(){
817     log check_oc "$@"
818     cat > $TMPM
819     log_file $TMPM
820     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
821 }
822
823 check_cpp(){
824     log check_cpp "$@"
825     cat > $TMPC
826     log_file $TMPC
827     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
828 }
829
830 as_o(){
831     eval printf '%s\\n' $AS_O
832 }
833
834 check_as(){
835     log check_as "$@"
836     cat > $TMPS
837     log_file $TMPS
838     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
839 }
840
841 check_inline_asm(){
842     log check_inline_asm "$@"
843     name="$1"
844     code="$2"
845     shift 2
846     disable $name
847     check_cc "$@" <<EOF && enable $name
848 void foo(void){ __asm__ volatile($code); }
849 EOF
850 }
851
852 check_insn(){
853     log check_insn "$@"
854     check_inline_asm ${1}_inline "\"$2\""
855     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
856 }
857
858 check_yasm(){
859     log check_yasm "$@"
860     echo "$1" > $TMPS
861     log_file $TMPS
862     shift 1
863     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
864 }
865
866 ld_o(){
867     eval printf '%s\\n' $LD_O
868 }
869
870 check_ld(){
871     log check_ld "$@"
872     type=$1
873     shift 1
874     flags=$(filter_out '-l*|*.so' $@)
875     libs=$(filter '-l*|*.so' $@)
876     check_$type $($cflags_filter $flags) || return
877     flags=$($ldflags_filter $flags)
878     libs=$($ldflags_filter $libs)
879     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
880 }
881
882 print_include(){
883     hdr=$1
884     test "${hdr%.h}" = "${hdr}" &&
885         echo "#include $hdr"    ||
886         echo "#include <$hdr>"
887 }
888
889 check_code(){
890     log check_code "$@"
891     check=$1
892     headers=$2
893     code=$3
894     shift 3
895     {
896         for hdr in $headers; do
897             print_include $hdr
898         done
899         echo "int main(void) { $code; return 0; }"
900     } | check_$check "$@"
901 }
902
903 check_cppflags(){
904     log check_cppflags "$@"
905     check_cc "$@" <<EOF && append CPPFLAGS "$@"
906 int x;
907 EOF
908 }
909
910 test_cflags(){
911     log test_cflags "$@"
912     set -- $($cflags_filter "$@")
913     check_cc "$@" <<EOF
914 int x;
915 EOF
916 }
917
918 check_cflags(){
919     log check_cflags "$@"
920     test_cflags "$@" && add_cflags "$@"
921 }
922
923 check_cxxflags(){
924     log check_cxxflags "$@"
925     set -- $($cflags_filter "$@")
926     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
927 int x;
928 EOF
929 }
930
931 test_ldflags(){
932     log test_ldflags "$@"
933     check_ld "cc" "$@" <<EOF
934 int main(void){ return 0; }
935 EOF
936 }
937
938 check_ldflags(){
939     log check_ldflags "$@"
940     test_ldflags "$@" && add_ldflags "$@"
941 }
942
943 test_stripflags(){
944     log test_stripflags "$@"
945     # call check_cc to get a fresh TMPO
946     check_cc <<EOF
947 int main(void) { return 0; }
948 EOF
949     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
950 }
951
952 check_stripflags(){
953     log check_stripflags "$@"
954     test_stripflags "$@" && add_stripflags "$@"
955 }
956
957 check_header(){
958     log check_header "$@"
959     header=$1
960     shift
961     disable_safe $header
962     check_cpp "$@" <<EOF && enable_safe $header
963 #include <$header>
964 int x;
965 EOF
966 }
967
968 check_header_oc(){
969     log check_header_oc "$@"
970     rm -f -- "$TMPO"
971     header=$1
972     shift
973     disable_safe $header
974     {
975        echo "#include <$header>"
976        echo "int main(void) { return 0; }"
977     } | check_oc && check_stat "$TMPO" && enable_safe $headers
978 }
979
980 check_func(){
981     log check_func "$@"
982     func=$1
983     shift
984     disable $func
985     check_ld "cc" "$@" <<EOF && enable $func
986 extern int $func();
987 int main(void){ $func(); }
988 EOF
989 }
990
991 check_mathfunc(){
992     log check_mathfunc "$@"
993     func=$1
994     narg=$2
995     shift 2
996     test $narg = 2 && args="f, g" || args="f"
997     disable $func
998     check_ld "cc" "$@" <<EOF && enable $func
999 #include <math.h>
1000 float foo(float f, float g) { return $func($args); }
1001 int main(void){ return (int) foo; }
1002 EOF
1003 }
1004
1005 check_func_headers(){
1006     log check_func_headers "$@"
1007     headers=$1
1008     funcs=$2
1009     shift 2
1010     {
1011         for hdr in $headers; do
1012             print_include $hdr
1013         done
1014         for func in $funcs; do
1015             echo "long check_$func(void) { return (long) $func; }"
1016         done
1017         echo "int main(void) { return 0; }"
1018     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1019 }
1020
1021 check_class_headers_cpp(){
1022     log check_class_headers_cpp "$@"
1023     headers=$1
1024     classes=$2
1025     shift 2
1026     {
1027         for hdr in $headers; do
1028             echo "#include <$hdr>"
1029         done
1030         echo "int main(void) { "
1031         i=1
1032         for class in $classes; do
1033             echo "$class obj$i;"
1034             i=$(expr $i + 1)
1035         done
1036         echo "return 0; }"
1037     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1038 }
1039
1040 check_cpp_condition(){
1041     log check_cpp_condition "$@"
1042     header=$1
1043     condition=$2
1044     shift 2
1045     check_cpp "$@" <<EOF
1046 #include <$header>
1047 #if !($condition)
1048 #error "unsatisfied condition: $condition"
1049 #endif
1050 EOF
1051 }
1052
1053 check_lib(){
1054     log check_lib "$@"
1055     header="$1"
1056     func="$2"
1057     shift 2
1058     check_header $header && check_func $func "$@" && add_extralibs "$@"
1059 }
1060
1061 check_lib2(){
1062     log check_lib2 "$@"
1063     headers="$1"
1064     funcs="$2"
1065     shift 2
1066     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1067 }
1068
1069 check_lib_cpp(){
1070     log check_lib_cpp "$@"
1071     headers="$1"
1072     classes="$2"
1073     shift 2
1074     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1075 }
1076
1077 check_pkg_config(){
1078     log check_pkg_config "$@"
1079     pkgandversion="$1"
1080     pkg="${1%% *}"
1081     headers="$2"
1082     funcs="$3"
1083     shift 3
1084     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1085     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1086     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1087     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1088         set_safe ${pkg}_cflags $pkg_cflags   &&
1089         set_safe ${pkg}_libs   $pkg_libs
1090 }
1091
1092 check_exec(){
1093     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1094 }
1095
1096 check_exec_crash(){
1097     code=$(cat)
1098
1099     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1100     # are safe but may not be available everywhere.  Thus we use
1101     # raise(SIGTERM) instead.  The check is run in a subshell so we
1102     # can redirect the "Terminated" message from the shell.  SIGBUS
1103     # is not defined by standard C so it is used conditionally.
1104
1105     (check_exec "$@") >> $logfile 2>&1 <<EOF
1106 #include <signal.h>
1107 static void sighandler(int sig){
1108     raise(SIGTERM);
1109 }
1110 int foo(void){
1111     $code
1112 }
1113 int (*func_ptr)(void) = foo;
1114 int main(void){
1115     signal(SIGILL, sighandler);
1116     signal(SIGFPE, sighandler);
1117     signal(SIGSEGV, sighandler);
1118 #ifdef SIGBUS
1119     signal(SIGBUS, sighandler);
1120 #endif
1121     return func_ptr();
1122 }
1123 EOF
1124 }
1125
1126 check_type(){
1127     log check_type "$@"
1128     headers=$1
1129     type=$2
1130     shift 2
1131     disable_safe "$type"
1132     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1133 }
1134
1135 check_struct(){
1136     log check_struct "$@"
1137     headers=$1
1138     struct=$2
1139     member=$3
1140     shift 3
1141     disable_safe "${struct}_${member}"
1142     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1143         enable_safe "${struct}_${member}"
1144 }
1145
1146 check_builtin(){
1147     log check_builtin "$@"
1148     name=$1
1149     headers=$2
1150     builtin=$3
1151     shift 3
1152     disable "$name"
1153     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1154 }
1155
1156 check_compile_assert(){
1157     log check_compile_assert "$@"
1158     name=$1
1159     headers=$2
1160     condition=$3
1161     shift 3
1162     disable "$name"
1163     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1164 }
1165
1166 require(){
1167     name="$1"
1168     header="$2"
1169     func="$3"
1170     shift 3
1171     check_lib $header $func "$@" || die "ERROR: $name not found"
1172 }
1173
1174 require2(){
1175     name="$1"
1176     headers="$2"
1177     func="$3"
1178     shift 3
1179     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1180 }
1181
1182 require_cpp(){
1183     name="$1"
1184     headers="$2"
1185     classes="$3"
1186     shift 3
1187     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require_pkg_config(){
1191     pkg="$1"
1192     check_pkg_config "$@" || die "ERROR: $pkg not found"
1193     add_cflags    $(get_safe ${pkg}_cflags)
1194     add_extralibs $(get_safe ${pkg}_libs)
1195 }
1196
1197 require_libfreetype(){
1198     log require_libfreetype "$@"
1199     pkg="freetype2"
1200     check_cmd $pkg_config --exists --print-errors $pkg \
1201       || die "ERROR: $pkg not found"
1202     pkg_cflags=$($pkg_config --cflags $pkg)
1203     pkg_libs=$($pkg_config --libs $pkg)
1204     {
1205         echo "#include <ft2build.h>"
1206         echo "#include FT_FREETYPE_H"
1207         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1208         echo "int main(void) { return 0; }"
1209     } | check_ld "cc" $pkg_cflags $pkg_libs \
1210       && set_safe ${pkg}_cflags $pkg_cflags \
1211       && set_safe ${pkg}_libs   $pkg_libs \
1212       || die "ERROR: $pkg not found"
1213     add_cflags    $(get_safe ${pkg}_cflags)
1214     add_extralibs $(get_safe ${pkg}_libs)
1215 }
1216
1217 hostcc_e(){
1218     eval printf '%s\\n' $HOSTCC_E
1219 }
1220
1221 hostcc_o(){
1222     eval printf '%s\\n' $HOSTCC_O
1223 }
1224
1225 check_host_cc(){
1226     log check_host_cc "$@"
1227     cat > $TMPC
1228     log_file $TMPC
1229     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1230 }
1231
1232 check_host_cpp(){
1233     log check_host_cpp "$@"
1234     cat > $TMPC
1235     log_file $TMPC
1236     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1237 }
1238
1239 check_host_cppflags(){
1240     log check_host_cppflags "$@"
1241     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1242 int x;
1243 EOF
1244 }
1245
1246 check_host_cflags(){
1247     log check_host_cflags "$@"
1248     set -- $($host_cflags_filter "$@")
1249     check_host_cc "$@" <<EOF && append host_cflags "$@"
1250 int x;
1251 EOF
1252 }
1253
1254 check_host_cpp_condition(){
1255     log check_host_cpp_condition "$@"
1256     header=$1
1257     condition=$2
1258     shift 2
1259     check_host_cpp "$@" <<EOF
1260 #include <$header>
1261 #if !($condition)
1262 #error "unsatisfied condition: $condition"
1263 #endif
1264 EOF
1265 }
1266
1267 apply(){
1268     file=$1
1269     shift
1270     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1271 }
1272
1273 cp_if_changed(){
1274     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1275     mkdir -p "$(dirname $2)"
1276     $cp_f "$1" "$2"
1277 }
1278
1279 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1280 # system-dependent things.
1281
1282 COMPONENT_LIST="
1283     bsfs
1284     decoders
1285     demuxers
1286     encoders
1287     filters
1288     hwaccels
1289     indevs
1290     muxers
1291     outdevs
1292     parsers
1293     protocols
1294 "
1295
1296 EXAMPLE_LIST="
1297     avio_reading_example
1298     decoding_encoding_example
1299     demuxing_decoding_example
1300     filter_audio_example
1301     filtering_audio_example
1302     filtering_video_example
1303     metadata_example
1304     muxing_example
1305     remuxing_example
1306     resampling_audio_example
1307     scaling_video_example
1308     transcode_aac_example
1309     transcoding_example
1310 "
1311
1312 EXTERNAL_LIBRARY_LIST="
1313     avisynth
1314     bzlib
1315     crystalhd
1316     decklink
1317     frei0r
1318     gnutls
1319     iconv
1320     ladspa
1321     libaacplus
1322     libass
1323     libbluray
1324     libbs2b
1325     libcaca
1326     libcdio
1327     libcelt
1328     libdc1394
1329     libfaac
1330     libfdk_aac
1331     libflite
1332     libfontconfig
1333     libfreetype
1334     libgme
1335     libgsm
1336     libiec61883
1337     libilbc
1338     libmodplug
1339     libmp3lame
1340     libnut
1341     libopencore_amrnb
1342     libopencore_amrwb
1343     libopencv
1344     libopenjpeg
1345     libopus
1346     libpulse
1347     libquvi
1348     librtmp
1349     libschroedinger
1350     libshine
1351     libsoxr
1352     libspeex
1353     libssh
1354     libstagefright_h264
1355     libtheora
1356     libtwolame
1357     libutvideo
1358     libv4l2
1359     libvidstab
1360     libvo_aacenc
1361     libvo_amrwbenc
1362     libvorbis
1363     libvpx
1364     libwavpack
1365     libwebp
1366     libx264
1367     libx265
1368     libxavs
1369     libxvid
1370     libzmq
1371     libzvbi
1372     openal
1373     opencl
1374     opengl
1375     openssl
1376     x11grab
1377     xlib
1378     zlib
1379 "
1380
1381 DOCUMENT_LIST="
1382     doc
1383     htmlpages
1384     manpages
1385     podpages
1386     txtpages
1387 "
1388
1389 FEATURE_LIST="
1390     ftrapv
1391     gray
1392     hardcoded_tables
1393     runtime_cpudetect
1394     safe_bitstream_reader
1395     shared
1396     small
1397     sram
1398     static
1399     swscale_alpha
1400 "
1401
1402 HWACCEL_LIST="
1403     dxva2
1404     vaapi
1405     vda
1406     vdpau
1407     xvmc
1408 "
1409
1410 LIBRARY_LIST="
1411     avcodec
1412     avdevice
1413     avfilter
1414     avformat
1415     avresample
1416     avutil
1417     postproc
1418     swresample
1419     swscale
1420 "
1421
1422 LICENSE_LIST="
1423     gpl
1424     nonfree
1425     version3
1426 "
1427
1428 PROGRAM_LIST="
1429     ffplay
1430     ffprobe
1431     ffserver
1432     ffmpeg
1433 "
1434
1435 SUBSYSTEM_LIST="
1436     dct
1437     dwt
1438     error_resilience
1439     fast_unaligned
1440     fft
1441     lsp
1442     lzo
1443     mdct
1444     network
1445     rdft
1446 "
1447
1448 CONFIG_LIST="
1449     $COMPONENT_LIST
1450     $DOCUMENT_LIST
1451     $EXAMPLE_LIST
1452     $EXTERNAL_LIBRARY_LIST
1453     $FEATURE_LIST
1454     $HWACCEL_LIST
1455     $LICENSE_LIST
1456     $LIBRARY_LIST
1457     $PROGRAM_LIST
1458     $SUBSYSTEM_LIST
1459     fontconfig
1460     incompatible_libav_abi
1461     memalign_hack
1462     memory_poisoning
1463     neon_clobber_test
1464     pic
1465     pod2man
1466     raise_major
1467     thumb
1468     xmm_clobber_test
1469 "
1470
1471 THREADS_LIST="
1472     pthreads
1473     os2threads
1474     w32threads
1475 "
1476
1477 ATOMICS_LIST="
1478     atomics_gcc
1479     atomics_suncc
1480     atomics_win32
1481 "
1482
1483 ARCH_LIST="
1484     aarch64
1485     alpha
1486     arm
1487     avr32
1488     avr32_ap
1489     avr32_uc
1490     bfin
1491     ia64
1492     m68k
1493     mips
1494     mips64
1495     parisc
1496     ppc
1497     ppc64
1498     s390
1499     sh4
1500     sparc
1501     sparc64
1502     tilegx
1503     tilepro
1504     tomi
1505     x86
1506     x86_32
1507     x86_64
1508 "
1509
1510 ARCH_EXT_LIST_ARM="
1511     armv5te
1512     armv6
1513     armv6t2
1514     armv8
1515     neon
1516     vfp
1517     vfpv3
1518 "
1519
1520 ARCH_EXT_LIST_MIPS="
1521     mipsfpu
1522     mips32r2
1523     mipsdspr1
1524     mipsdspr2
1525 "
1526
1527 ARCH_EXT_LIST_X86_SIMD="
1528     amd3dnow
1529     amd3dnowext
1530     avx
1531     avx2
1532     fma3
1533     fma4
1534     mmx
1535     mmxext
1536     sse
1537     sse2
1538     sse3
1539     sse4
1540     sse42
1541     ssse3
1542     xop
1543 "
1544
1545 ARCH_EXT_LIST_PPC="
1546     altivec
1547     dcbzl
1548     ldbrx
1549     ppc4xx
1550 "
1551
1552 ARCH_EXT_LIST_X86="
1553     $ARCH_EXT_LIST_X86_SIMD
1554     cpunop
1555     i686
1556 "
1557
1558 ARCH_EXT_LIST="
1559     $ARCH_EXT_LIST_ARM
1560     $ARCH_EXT_LIST_PPC
1561     $ARCH_EXT_LIST_X86
1562     $ARCH_EXT_LIST_MIPS
1563     loongson
1564 "
1565
1566 ARCH_FEATURES="
1567     aligned_stack
1568     fast_64bit
1569     fast_clz
1570     fast_cmov
1571     local_aligned_8
1572     local_aligned_16
1573     local_aligned_32
1574 "
1575
1576 BUILTIN_LIST="
1577     atomic_cas_ptr
1578     machine_rw_barrier
1579     MemoryBarrier
1580     mm_empty
1581     rdtsc
1582     sarestart
1583     sync_val_compare_and_swap
1584 "
1585 HAVE_LIST_CMDLINE="
1586     inline_asm
1587     symver
1588     yasm
1589 "
1590
1591 HAVE_LIST_PUB="
1592     bigendian
1593     fast_unaligned
1594     incompatible_libav_abi
1595 "
1596
1597 HEADERS_LIST="
1598     alsa_asoundlib_h
1599     altivec_h
1600     arpa_inet_h
1601     asm_types_h
1602     cdio_paranoia_h
1603     cdio_paranoia_paranoia_h
1604     CL_cl_h
1605     dev_bktr_ioctl_bt848_h
1606     dev_bktr_ioctl_meteor_h
1607     dev_ic_bt8xx_h
1608     dev_video_bktr_ioctl_bt848_h
1609     dev_video_meteor_ioctl_meteor_h
1610     direct_h
1611     dlfcn_h
1612     dxva_h
1613     ES2_gl_h
1614     gsm_h
1615     io_h
1616     mach_mach_time_h
1617     machine_ioctl_bt848_h
1618     machine_ioctl_meteor_h
1619     malloc_h
1620     openjpeg_1_5_openjpeg_h
1621     OpenGL_gl3_h
1622     poll_h
1623     sndio_h
1624     soundcard_h
1625     sys_mman_h
1626     sys_param_h
1627     sys_resource_h
1628     sys_select_h
1629     sys_soundcard_h
1630     sys_time_h
1631     sys_un_h
1632     sys_videoio_h
1633     termios_h
1634     unistd_h
1635     windows_h
1636     winsock2_h
1637 "
1638
1639 MATH_FUNCS="
1640     atanf
1641     atan2f
1642     cbrt
1643     cbrtf
1644     cosf
1645     exp2
1646     exp2f
1647     expf
1648     isinf
1649     isnan
1650     ldexpf
1651     llrint
1652     llrintf
1653     log2
1654     log2f
1655     log10f
1656     lrint
1657     lrintf
1658     powf
1659     rint
1660     round
1661     roundf
1662     sinf
1663     trunc
1664     truncf
1665 "
1666
1667 SYSTEM_FUNCS="
1668     access
1669     aligned_malloc
1670     clock_gettime
1671     closesocket
1672     CommandLineToArgvW
1673     CoTaskMemFree
1674     CryptGenRandom
1675     dlopen
1676     fcntl
1677     flt_lim
1678     fork
1679     getaddrinfo
1680     gethrtime
1681     getopt
1682     GetProcessAffinityMask
1683     GetProcessMemoryInfo
1684     GetProcessTimes
1685     getrusage
1686     getservbyport
1687     GetSystemTimeAsFileTime
1688     gettimeofday
1689     glob
1690     glXGetProcAddress
1691     inet_aton
1692     isatty
1693     jack_port_get_latency_range
1694     kbhit
1695     localtime_r
1696     lzo1x_999_compress
1697     mach_absolute_time
1698     MapViewOfFile
1699     memalign
1700     mkstemp
1701     mmap
1702     mprotect
1703     nanosleep
1704     PeekNamedPipe
1705     posix_memalign
1706     pthread_cancel
1707     sched_getaffinity
1708     SetConsoleTextAttribute
1709     setmode
1710     setrlimit
1711     Sleep
1712     strerror_r
1713     sysconf
1714     sysctl
1715     usleep
1716     VirtualAlloc
1717     wglGetProcAddress
1718 "
1719
1720 TOOLCHAIN_FEATURES="
1721     asm_mod_q
1722     attribute_may_alias
1723     attribute_packed
1724     ebp_available
1725     ebx_available
1726     gnu_as
1727     gnu_windres
1728     ibm_asm
1729     inline_asm_labels
1730     inline_asm_nonlocal_labels
1731     inline_asm_direct_symbol_refs
1732     pragma_deprecated
1733     rsync_contimeout
1734     symver_asm_label
1735     symver_gnu_asm
1736     vfp_args
1737     xform_asm
1738     xmm_clobbers
1739 "
1740
1741 TYPES_LIST="
1742     socklen_t
1743     struct_addrinfo
1744     struct_group_source_req
1745     struct_ip_mreq_source
1746     struct_ipv6_mreq
1747     struct_pollfd
1748     struct_rusage_ru_maxrss
1749     struct_sctp_event_subscribe
1750     struct_sockaddr_in6
1751     struct_sockaddr_sa_len
1752     struct_sockaddr_storage
1753     struct_stat_st_mtim_tv_nsec
1754     struct_v4l2_frmivalenum_discrete
1755 "
1756
1757 HAVE_LIST="
1758     $ARCH_EXT_LIST
1759     $(add_suffix _external $ARCH_EXT_LIST)
1760     $(add_suffix _inline   $ARCH_EXT_LIST)
1761     $ARCH_FEATURES
1762     $ATOMICS_LIST
1763     $BUILTIN_LIST
1764     $HAVE_LIST_CMDLINE
1765     $HAVE_LIST_PUB
1766     $HEADERS_LIST
1767     $MATH_FUNCS
1768     $SYSTEM_FUNCS
1769     $THREADS_LIST
1770     $TOOLCHAIN_FEATURES
1771     $TYPES_LIST
1772     atomics_native
1773     dos_paths
1774     dxva2api_cobj
1775     dxva2_lib
1776     libc_msvcrt
1777     libdc1394_1
1778     libdc1394_2
1779     makeinfo
1780     perl
1781     pod2man
1782     sdl
1783     texi2html
1784     threads
1785     vdpau_x11
1786     xlib
1787 "
1788
1789 # options emitted with CONFIG_ prefix but not available on the command line
1790 CONFIG_EXTRA="
1791     aandcttables
1792     ac3dsp
1793     audio_frame_queue
1794     cabac
1795     dsputil
1796     exif
1797     frame_thread_encoder
1798     gcrypt
1799     golomb
1800     gplv3
1801     h263dsp
1802     h264chroma
1803     h264dsp
1804     h264pred
1805     h264qpel
1806     hpeldsp
1807     huffman
1808     intrax8
1809     lgplv3
1810     llviddsp
1811     lpc
1812     mpegaudio
1813     mpegaudiodsp
1814     mpegvideo
1815     mpegvideoenc
1816     nettle
1817     rangecoder
1818     riffdec
1819     riffenc
1820     rtpdec
1821     rtpenc_chain
1822     sinewin
1823     tpeldsp
1824     videodsp
1825     vp3dsp
1826 "
1827
1828 CMDLINE_SELECT="
1829     $ARCH_EXT_LIST
1830     $CONFIG_LIST
1831     $HAVE_LIST_CMDLINE
1832     $THREADS_LIST
1833     asm
1834     cross_compile
1835     debug
1836     extra_warnings
1837     logging
1838     lto
1839     optimizations
1840     rpath
1841     stripping
1842 "
1843
1844 PATHS_LIST="
1845     bindir
1846     datadir
1847     docdir
1848     incdir
1849     libdir
1850     mandir
1851     prefix
1852     shlibdir
1853 "
1854
1855 CMDLINE_SET="
1856     $PATHS_LIST
1857     ar
1858     arch
1859     as
1860     assert_level
1861     build_suffix
1862     cc
1863     cpu
1864     cross_prefix
1865     cxx
1866     dep_cc
1867     extra_version
1868     gas
1869     host_cc
1870     host_cflags
1871     host_ld
1872     host_ldflags
1873     host_libs
1874     host_os
1875     install
1876     ld
1877     logfile
1878     malloc_prefix
1879     nm
1880     optflags
1881     pkg_config
1882     pkg_config_flags
1883     progs_suffix
1884     random_seed
1885     ranlib
1886     samples
1887     strip
1888     sysinclude
1889     sysroot
1890     target_exec
1891     target_os
1892     target_path
1893     target_samples
1894     tempprefix
1895     toolchain
1896     valgrind
1897     yasmexe
1898 "
1899
1900 CMDLINE_APPEND="
1901     extra_cflags
1902     extra_cxxflags
1903     host_cppflags
1904 "
1905
1906 # code dependency declarations
1907
1908 # architecture extensions
1909
1910 armv5te_deps="arm"
1911 armv6_deps="arm"
1912 armv6t2_deps="arm"
1913 armv8_deps="aarch64"
1914 neon_deps_any="aarch64 arm"
1915 vfp_deps_any="aarch64 arm"
1916 vfpv3_deps="vfp"
1917
1918 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1919
1920 mipsfpu_deps="mips"
1921 mips32r2_deps="mips"
1922 mipsdspr1_deps="mips"
1923 mipsdspr2_deps="mips"
1924
1925 altivec_deps="ppc"
1926 ppc4xx_deps="ppc"
1927
1928 cpunop_deps="i686"
1929 x86_64_select="i686"
1930 x86_64_suggest="fast_cmov"
1931
1932 amd3dnow_deps="mmx"
1933 amd3dnowext_deps="amd3dnow"
1934 i686_deps="x86"
1935 mmx_deps="x86"
1936 mmxext_deps="mmx"
1937 sse_deps="mmxext"
1938 sse2_deps="sse"
1939 sse3_deps="sse2"
1940 ssse3_deps="sse3"
1941 sse4_deps="ssse3"
1942 sse42_deps="sse4"
1943 avx_deps="sse42"
1944 xop_deps="avx"
1945 fma3_deps="avx"
1946 fma4_deps="avx"
1947 avx2_deps="avx"
1948
1949 mmx_external_deps="yasm"
1950 mmx_inline_deps="inline_asm"
1951 mmx_suggest="mmx_external mmx_inline"
1952
1953 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1954     eval dep=\$${ext}_deps
1955     eval ${ext}_external_deps='"${dep}_external"'
1956     eval ${ext}_inline_deps='"${dep}_inline"'
1957     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1958 done
1959
1960 aligned_stack_if_any="aarch64 ppc x86"
1961 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1962 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1963 fast_unaligned_if_any="aarch64 ppc x86"
1964
1965 need_memalign="altivec neon sse"
1966
1967 # system capabilities
1968
1969 symver_if_any="symver_asm_label symver_gnu_asm"
1970
1971 # threading support
1972 atomics_gcc_if="sync_val_compare_and_swap"
1973 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1974 atomics_win32_if="MemoryBarrier"
1975 atomics_native_if_any="$ATOMICS_LIST"
1976 w32threads_deps="atomics_native"
1977 threads_if_any="$THREADS_LIST"
1978
1979 # subsystems
1980 dct_select="rdft"
1981 error_resilience_select="dsputil"
1982 frame_thread_encoder_deps="encoders threads"
1983 mdct_select="fft"
1984 rdft_select="fft"
1985 mpegaudio_select="mpegaudiodsp"
1986 mpegaudiodsp_select="dct"
1987 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1988 mpegvideoenc_select="dsputil mpegvideo"
1989
1990 # decoders / encoders
1991 aac_decoder_select="mdct sinewin"
1992 aac_encoder_select="audio_frame_queue mdct sinewin"
1993 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1994 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1995 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
1996 ac3_encoder_select="mdct ac3dsp dsputil"
1997 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1998 aic_decoder_select="dsputil golomb"
1999 alac_encoder_select="lpc"
2000 als_decoder_select="dsputil"
2001 amrnb_decoder_select="lsp"
2002 amrwb_decoder_select="lsp"
2003 amv_decoder_select="sp5x_decoder exif"
2004 amv_encoder_select="aandcttables"
2005 ape_decoder_select="dsputil"
2006 asv1_decoder_select="dsputil"
2007 asv1_encoder_select="dsputil"
2008 asv2_decoder_select="dsputil"
2009 asv2_encoder_select="dsputil"
2010 atrac1_decoder_select="mdct sinewin"
2011 atrac3_decoder_select="mdct"
2012 atrac3p_decoder_select="mdct sinewin"
2013 avrn_decoder_select="exif"
2014 bink_decoder_select="dsputil hpeldsp"
2015 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2016 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2017 cavs_decoder_select="dsputil golomb h264chroma videodsp"
2018 cllc_decoder_select="dsputil"
2019 comfortnoise_encoder_select="lpc"
2020 cook_decoder_select="dsputil mdct sinewin"
2021 cscd_decoder_select="lzo"
2022 cscd_decoder_suggest="zlib"
2023 dca_decoder_select="mdct"
2024 dirac_decoder_select="dsputil dwt golomb videodsp"
2025 dnxhd_decoder_select="dsputil"
2026 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2027 dvvideo_decoder_select="dsputil"
2028 dvvideo_encoder_select="dsputil"
2029 dxa_decoder_select="zlib"
2030 eac3_decoder_select="ac3_decoder"
2031 eac3_encoder_select="ac3_encoder"
2032 eamad_decoder_select="aandcttables dsputil mpegvideo"
2033 eatgq_decoder_select="aandcttables"
2034 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2035 exr_decoder_select="zlib"
2036 ffv1_decoder_select="golomb rangecoder"
2037 ffv1_encoder_select="rangecoder"
2038 ffvhuff_decoder_select="huffyuv_decoder"
2039 ffvhuff_encoder_select="huffyuv_encoder"
2040 fic_decoder_select="golomb"
2041 flac_decoder_select="golomb"
2042 flac_encoder_select="dsputil golomb lpc"
2043 flashsv_decoder_select="zlib"
2044 flashsv_encoder_select="zlib"
2045 flashsv2_encoder_select="zlib"
2046 flashsv2_decoder_select="zlib"
2047 flv_decoder_select="h263_decoder"
2048 flv_encoder_select="h263_encoder"
2049 fourxm_decoder_select="dsputil"
2050 fraps_decoder_select="dsputil huffman"
2051 g2m_decoder_select="dsputil zlib"
2052 g729_decoder_select="dsputil"
2053 h261_decoder_select="error_resilience mpegvideo"
2054 h261_encoder_select="aandcttables mpegvideoenc"
2055 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2056 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2057 h263i_decoder_select="h263_decoder"
2058 h263p_encoder_select="h263_encoder"
2059 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2060 h264_decoder_suggest="error_resilience"
2061 hevc_decoder_select="cabac dsputil golomb videodsp"
2062 huffyuv_decoder_select="dsputil llviddsp"
2063 huffyuv_encoder_select="dsputil huffman llviddsp"
2064 iac_decoder_select="imc_decoder"
2065 imc_decoder_select="dsputil fft mdct sinewin"
2066 indeo3_decoder_select="hpeldsp"
2067 interplay_video_decoder_select="hpeldsp"
2068 jpegls_decoder_select="golomb mjpeg_decoder"
2069 jpegls_encoder_select="golomb"
2070 jv_decoder_select="dsputil"
2071 lagarith_decoder_select="dsputil"
2072 ljpeg_encoder_select="aandcttables mpegvideoenc"
2073 loco_decoder_select="golomb"
2074 mdec_decoder_select="dsputil error_resilience mpegvideo"
2075 metasound_decoder_select="lsp mdct sinewin"
2076 mimic_decoder_select="dsputil hpeldsp"
2077 mjpeg_decoder_select="dsputil hpeldsp exif"
2078 mjpeg_encoder_select="aandcttables mpegvideoenc"
2079 mjpegb_decoder_select="mjpeg_decoder"
2080 mlp_decoder_select="mlp_parser"
2081 motionpixels_decoder_select="dsputil"
2082 mp1_decoder_select="mpegaudio"
2083 mp1float_decoder_select="mpegaudio"
2084 mp2_decoder_select="mpegaudio"
2085 mp2float_decoder_select="mpegaudio"
2086 mp3_decoder_select="mpegaudio"
2087 mp3adu_decoder_select="mpegaudio"
2088 mp3adufloat_decoder_select="mpegaudio"
2089 mp3float_decoder_select="mpegaudio"
2090 mp3on4_decoder_select="mpegaudio"
2091 mp3on4float_decoder_select="mpegaudio"
2092 mpc7_decoder_select="dsputil mpegaudiodsp"
2093 mpc8_decoder_select="mpegaudiodsp"
2094 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2095 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2096 mpeg1video_decoder_select="error_resilience mpegvideo"
2097 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2098 mpeg2video_decoder_select="error_resilience mpegvideo"
2099 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2100 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2101 mpeg4_encoder_select="h263_encoder"
2102 msmpeg4v1_decoder_select="h263_decoder"
2103 msmpeg4v2_decoder_select="h263_decoder"
2104 msmpeg4v2_encoder_select="h263_encoder"
2105 msmpeg4v3_decoder_select="h263_decoder"
2106 msmpeg4v3_encoder_select="h263_encoder"
2107 mss2_decoder_select="error_resilience vc1_decoder"
2108 mxpeg_decoder_select="mjpeg_decoder"
2109 nellymoser_decoder_select="mdct sinewin"
2110 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2111 nuv_decoder_select="dsputil lzo"
2112 on2avc_decoder_select="mdct"
2113 png_decoder_select="zlib"
2114 png_encoder_select="dsputil zlib"
2115 prores_decoder_select="dsputil"
2116 prores_encoder_select="dsputil"
2117 qcelp_decoder_select="lsp"
2118 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2119 ra_144_encoder_select="audio_frame_queue lpc"
2120 ralf_decoder_select="golomb"
2121 rawvideo_decoder_select="dsputil"
2122 rtjpeg_decoder_select="dsputil"
2123 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2124 rv10_encoder_select="h263_encoder"
2125 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2126 rv20_encoder_select="h263_encoder"
2127 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2128 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2129 shorten_decoder_select="golomb"
2130 sipr_decoder_select="lsp"
2131 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2132 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2133 sonic_decoder_select="golomb rangecoder"
2134 sonic_encoder_select="golomb rangecoder"
2135 sonic_ls_encoder_select="golomb rangecoder"
2136 sp5x_decoder_select="mjpeg_decoder"
2137 svq1_decoder_select="hpeldsp"
2138 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2139 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2140 svq3_decoder_suggest="zlib"
2141 tak_decoder_select="dsputil"
2142 theora_decoder_select="vp3_decoder"
2143 thp_decoder_select="mjpeg_decoder"
2144 tiff_decoder_suggest="zlib"
2145 tiff_encoder_suggest="zlib"
2146 truehd_decoder_select="mlp_parser"
2147 truemotion2_decoder_select="dsputil"
2148 truespeech_decoder_select="dsputil"
2149 tscc_decoder_select="zlib"
2150 twinvq_decoder_select="mdct lsp sinewin"
2151 utvideo_decoder_select="dsputil"
2152 utvideo_encoder_select="dsputil huffman"
2153 vble_decoder_select="dsputil"
2154 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2155 vc1image_decoder_select="vc1_decoder"
2156 vorbis_decoder_select="mdct"
2157 vorbis_encoder_select="mdct"
2158 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2159 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2160 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2161 vp6a_decoder_select="vp6_decoder"
2162 vp6f_decoder_select="vp6_decoder"
2163 vp7_decoder_select="h264pred videodsp"
2164 vp8_decoder_select="h264pred videodsp"
2165 vp9_decoder_select="videodsp"
2166 webp_decoder_select="vp8_decoder"
2167 wmapro_decoder_select="mdct sinewin"
2168 wmav1_decoder_select="mdct sinewin"
2169 wmav1_encoder_select="mdct sinewin"
2170 wmav2_decoder_select="mdct sinewin"
2171 wmav2_encoder_select="mdct sinewin"
2172 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2173 wmv1_decoder_select="h263_decoder"
2174 wmv1_encoder_select="h263_encoder"
2175 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2176 wmv2_encoder_select="h263_encoder"
2177 wmv3_decoder_select="vc1_decoder"
2178 wmv3image_decoder_select="wmv3_decoder"
2179 zerocodec_decoder_select="zlib"
2180 zlib_decoder_select="zlib"
2181 zlib_encoder_select="zlib"
2182 zmbv_decoder_select="zlib"
2183 zmbv_encoder_select="zlib"
2184
2185 # hardware accelerators
2186 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2187 dxva2_deps="dxva2api_h"
2188 vaapi_deps="va_va_h"
2189 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2190 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2191 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2192 xvmc_deps="X11_extensions_XvMClib_h"
2193
2194 h263_vaapi_hwaccel_deps="vaapi"
2195 h263_vaapi_hwaccel_select="h263_decoder"
2196 h263_vdpau_hwaccel_deps="vdpau"
2197 h263_vdpau_hwaccel_select="h263_decoder"
2198 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2199 h264_dxva2_hwaccel_deps="dxva2"
2200 h264_dxva2_hwaccel_select="h264_decoder"
2201 h264_vaapi_hwaccel_deps="vaapi"
2202 h264_vaapi_hwaccel_select="h264_decoder"
2203 h264_vda_decoder_deps="vda"
2204 h264_vda_decoder_select="h264_decoder"
2205 h264_vda_hwaccel_deps="vda"
2206 h264_vda_hwaccel_select="h264_decoder"
2207 h264_vda_old_hwaccel_deps="vda"
2208 h264_vda_old_hwaccel_select="h264_decoder"
2209 h264_vdpau_decoder_deps="vdpau"
2210 h264_vdpau_decoder_select="h264_decoder"
2211 h264_vdpau_hwaccel_deps="vdpau"
2212 h264_vdpau_hwaccel_select="h264_decoder"
2213 mpeg_vdpau_decoder_deps="vdpau"
2214 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2215 mpeg_xvmc_hwaccel_deps="xvmc"
2216 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2217 mpeg1_vdpau_decoder_deps="vdpau"
2218 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2219 mpeg1_vdpau_hwaccel_deps="vdpau"
2220 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2221 mpeg1_xvmc_hwaccel_deps="xvmc"
2222 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2223 mpeg2_crystalhd_decoder_select="crystalhd"
2224 mpeg2_dxva2_hwaccel_deps="dxva2"
2225 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2226 mpeg2_vaapi_hwaccel_deps="vaapi"
2227 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2228 mpeg2_vdpau_hwaccel_deps="vdpau"
2229 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2230 mpeg2_xvmc_hwaccel_deps="xvmc"
2231 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2232 mpeg4_crystalhd_decoder_select="crystalhd"
2233 mpeg4_vaapi_hwaccel_deps="vaapi"
2234 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2235 mpeg4_vdpau_decoder_deps="vdpau"
2236 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2237 mpeg4_vdpau_hwaccel_deps="vdpau"
2238 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2239 msmpeg4_crystalhd_decoder_select="crystalhd"
2240 vc1_crystalhd_decoder_select="crystalhd"
2241 vc1_dxva2_hwaccel_deps="dxva2"
2242 vc1_dxva2_hwaccel_select="vc1_decoder"
2243 vc1_vaapi_hwaccel_deps="vaapi"
2244 vc1_vaapi_hwaccel_select="vc1_decoder"
2245 vc1_vdpau_decoder_deps="vdpau"
2246 vc1_vdpau_decoder_select="vc1_decoder"
2247 vc1_vdpau_hwaccel_deps="vdpau"
2248 vc1_vdpau_hwaccel_select="vc1_decoder"
2249 wmv3_crystalhd_decoder_select="crystalhd"
2250 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2251 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2252 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2253 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2254
2255 # parsers
2256 h264_parser_select="h264_decoder"
2257 hevc_parser_select="hevc_decoder"
2258 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2259 mpegvideo_parser_select="error_resilience mpegvideo"
2260 vc1_parser_select="mpegvideo"
2261
2262 # external libraries
2263 libaacplus_encoder_deps="libaacplus"
2264 libcelt_decoder_deps="libcelt"
2265 libfaac_encoder_deps="libfaac"
2266 libfaac_encoder_select="audio_frame_queue"
2267 libfdk_aac_decoder_deps="libfdk_aac"
2268 libfdk_aac_encoder_deps="libfdk_aac"
2269 libfdk_aac_encoder_select="audio_frame_queue"
2270 libgme_demuxer_deps="libgme"
2271 libgsm_decoder_deps="libgsm"
2272 libgsm_encoder_deps="libgsm"
2273 libgsm_ms_decoder_deps="libgsm"
2274 libgsm_ms_encoder_deps="libgsm"
2275 libilbc_decoder_deps="libilbc"
2276 libilbc_encoder_deps="libilbc"
2277 libmodplug_demuxer_deps="libmodplug"
2278 libmp3lame_encoder_deps="libmp3lame"
2279 libmp3lame_encoder_select="audio_frame_queue"
2280 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2281 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2282 libopencore_amrnb_encoder_select="audio_frame_queue"
2283 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2284 libopenjpeg_decoder_deps="libopenjpeg"
2285 libopenjpeg_encoder_deps="libopenjpeg"
2286 libopus_decoder_deps="libopus"
2287 libopus_encoder_deps="libopus"
2288 libopus_encoder_select="audio_frame_queue"
2289 libquvi_demuxer_deps="libquvi"
2290 libschroedinger_decoder_deps="libschroedinger"
2291 libschroedinger_encoder_deps="libschroedinger"
2292 libshine_encoder_deps="libshine"
2293 libshine_encoder_select="audio_frame_queue"
2294 libspeex_decoder_deps="libspeex"
2295 libspeex_encoder_deps="libspeex"
2296 libspeex_encoder_select="audio_frame_queue"
2297 libstagefright_h264_decoder_deps="libstagefright_h264"
2298 libtheora_encoder_deps="libtheora"
2299 libtwolame_encoder_deps="libtwolame"
2300 libvo_aacenc_encoder_deps="libvo_aacenc"
2301 libvo_aacenc_encoder_select="audio_frame_queue"
2302 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2303 libvorbis_decoder_deps="libvorbis"
2304 libvorbis_encoder_deps="libvorbis"
2305 libvorbis_encoder_select="audio_frame_queue"
2306 libvpx_vp8_decoder_deps="libvpx"
2307 libvpx_vp8_encoder_deps="libvpx"
2308 libvpx_vp9_decoder_deps="libvpx"
2309 libvpx_vp9_encoder_deps="libvpx"
2310 libwavpack_encoder_deps="libwavpack"
2311 libwebp_encoder_deps="libwebp"
2312 libx264_encoder_deps="libx264"
2313 libx264rgb_encoder_deps="libx264"
2314 libx265_encoder_deps="libx265"
2315 libxavs_encoder_deps="libxavs"
2316 libxvid_encoder_deps="libxvid"
2317 libutvideo_decoder_deps="libutvideo"
2318 libutvideo_encoder_deps="libutvideo"
2319 libzvbi_teletext_decoder_deps="libzvbi"
2320
2321 # demuxers / muxers
2322 ac3_demuxer_select="ac3_parser"
2323 asf_demuxer_select="riffdec"
2324 asf_muxer_select="riffenc"
2325 asf_stream_muxer_select="asf_muxer"
2326 avi_demuxer_select="riffdec exif"
2327 avi_muxer_select="riffenc"
2328 avisynth_demuxer_deps="avisynth"
2329 avisynth_demuxer_select="riffdec"
2330 caf_demuxer_select="riffdec"
2331 dirac_demuxer_select="dirac_parser"
2332 dts_demuxer_select="dca_parser"
2333 dtshd_demuxer_select="dca_parser"
2334 dxa_demuxer_select="riffdec"
2335 eac3_demuxer_select="ac3_parser"
2336 f4v_muxer_select="mov_muxer"
2337 flac_demuxer_select="flac_parser"
2338 hds_muxer_select="flv_muxer"
2339 hls_muxer_select="mpegts_muxer"
2340 image2_alias_pix_demuxer_select="image2_demuxer"
2341 image2_brender_pix_demuxer_select="image2_demuxer"
2342 ipod_muxer_select="mov_muxer"
2343 ismv_muxer_select="mov_muxer"
2344 libnut_demuxer_deps="libnut"
2345 libnut_muxer_deps="libnut"
2346 matroska_audio_muxer_select="matroska_muxer"
2347 matroska_demuxer_select="riffdec"
2348 matroska_demuxer_suggest="bzlib lzo zlib"
2349 matroska_muxer_select="riffenc"
2350 mmf_muxer_select="riffenc"
2351 mov_demuxer_select="riffdec"
2352 mov_demuxer_suggest="zlib"
2353 mov_muxer_select="riffenc rtpenc_chain"
2354 mp3_demuxer_select="mpegaudio_parser"
2355 mp4_muxer_select="mov_muxer"
2356 mpegts_muxer_select="adts_muxer latm_muxer"
2357 mpegtsraw_demuxer_select="mpegts_demuxer"
2358 mxf_d10_muxer_select="mxf_muxer"
2359 nut_muxer_select="riffenc"
2360 nuv_demuxer_select="riffdec"
2361 ogg_demuxer_select="golomb"
2362 psp_muxer_select="mov_muxer"
2363 rtp_demuxer_select="sdp_demuxer"
2364 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2365 rtsp_demuxer_select="http_protocol rtpdec"
2366 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2367 sap_demuxer_select="sdp_demuxer"
2368 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2369 sdp_demuxer_select="rtpdec"
2370 smoothstreaming_muxer_select="ismv_muxer"
2371 spdif_muxer_select="aac_parser"
2372 tak_demuxer_select="tak_parser"
2373 tg2_muxer_select="mov_muxer"
2374 tgp_muxer_select="mov_muxer"
2375 vobsub_demuxer_select="mpegps_demuxer"
2376 w64_demuxer_select="wav_demuxer"
2377 w64_muxer_select="wav_muxer"
2378 wav_demuxer_select="riffdec"
2379 wav_muxer_select="riffenc"
2380 webm_muxer_select="riffenc"
2381 wtv_demuxer_select="riffdec"
2382 wtv_muxer_select="riffenc"
2383 xmv_demuxer_select="riffdec"
2384 xwma_demuxer_select="riffdec"
2385
2386 # indevs / outdevs
2387 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2388 alsa_outdev_deps="alsa_asoundlib_h"
2389 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2390 avfoundation_indev_select="avfoundation"
2391 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2392 caca_outdev_deps="libcaca"
2393 decklink_outdev_deps="decklink pthreads"
2394 decklink_outdev_extralibs="-lstdc++"
2395 dshow_indev_deps="IBaseFilter"
2396 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2397 dv1394_indev_deps="dv1394"
2398 dv1394_indev_select="dv_demuxer"
2399 fbdev_indev_deps="linux_fb_h"
2400 fbdev_outdev_deps="linux_fb_h"
2401 gdigrab_indev_deps="CreateDIBSection"
2402 gdigrab_indev_extralibs="-lgdi32"
2403 gdigrab_indev_select="bmp_decoder"
2404 iec61883_indev_deps="libiec61883"
2405 jack_indev_deps="jack_jack_h sem_timedwait"
2406 lavfi_indev_deps="avfilter"
2407 libcdio_indev_deps="libcdio"
2408 libdc1394_indev_deps="libdc1394"
2409 libv4l2_indev_deps="libv4l2"
2410 openal_indev_deps="openal"
2411 opengl_outdev_deps="opengl"
2412 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2413 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2414 pulse_indev_deps="libpulse"
2415 pulse_outdev_deps="libpulse"
2416 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2417 qtkit_indev_select="qtkit"
2418 sdl_outdev_deps="sdl"
2419 sndio_indev_deps="sndio_h"
2420 sndio_outdev_deps="sndio_h"
2421 v4l_indev_deps="linux_videodev_h"
2422 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2423 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2424 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2425 vfwcap_indev_extralibs="-lavicap32"
2426 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2427 xv_outdev_extralibs="-lXv -lX11 -lXext"
2428 x11grab_indev_deps="x11grab"
2429
2430 # protocols
2431 bluray_protocol_deps="libbluray"
2432 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2433 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2434 ffrtmpcrypt_protocol_select="tcp_protocol"
2435 ffrtmphttp_protocol_deps="!librtmp_protocol"
2436 ffrtmphttp_protocol_select="http_protocol"
2437 ftp_protocol_select="tcp_protocol"
2438 gopher_protocol_select="network"
2439 http_protocol_select="tcp_protocol"
2440 httpproxy_protocol_select="tcp_protocol"
2441 https_protocol_select="tls_protocol"
2442 librtmp_protocol_deps="librtmp"
2443 librtmpe_protocol_deps="librtmp"
2444 librtmps_protocol_deps="librtmp"
2445 librtmpt_protocol_deps="librtmp"
2446 librtmpte_protocol_deps="librtmp"
2447 libssh_protocol_deps="libssh"
2448 mmsh_protocol_select="http_protocol"
2449 mmst_protocol_select="network"
2450 rtmp_protocol_deps="!librtmp_protocol"
2451 rtmp_protocol_select="tcp_protocol"
2452 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2453 rtmps_protocol_deps="!librtmp_protocol"
2454 rtmps_protocol_select="tls_protocol"
2455 rtmpt_protocol_select="ffrtmphttp_protocol"
2456 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2457 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2458 rtp_protocol_select="udp_protocol"
2459 sctp_protocol_deps="struct_sctp_event_subscribe"
2460 sctp_protocol_select="network"
2461 srtp_protocol_select="rtp_protocol"
2462 tcp_protocol_select="network"
2463 tls_protocol_deps_any="openssl gnutls"
2464 tls_protocol_select="tcp_protocol"
2465 udp_protocol_select="network"
2466 unix_protocol_deps="sys_un_h"
2467 unix_protocol_select="network"
2468
2469 # filters
2470 aconvert_filter_deps="swresample"
2471 amovie_filter_deps="avcodec avformat"
2472 aresample_filter_deps="swresample"
2473 ass_filter_deps="libass"
2474 asyncts_filter_deps="avresample"
2475 atempo_filter_deps="avcodec"
2476 atempo_filter_select="rdft"
2477 azmq_filter_deps="libzmq"
2478 blackframe_filter_deps="gpl"
2479 boxblur_filter_deps="gpl"
2480 bs2b_filter_deps="libbs2b"
2481 colormatrix_filter_deps="gpl"
2482 cropdetect_filter_deps="gpl"
2483 dctdnoiz_filter_deps="avcodec"
2484 dctdnoiz_filter_select="dct"
2485 delogo_filter_deps="gpl"
2486 deshake_filter_deps="avcodec"
2487 deshake_filter_select="dsputil"
2488 drawtext_filter_deps="libfreetype"
2489 ebur128_filter_deps="gpl"
2490 flite_filter_deps="libflite"
2491 frei0r_filter_deps="frei0r dlopen"
2492 frei0r_filter_extralibs='$ldl'
2493 frei0r_src_filter_deps="frei0r dlopen"
2494 frei0r_src_filter_extralibs='$ldl'
2495 geq_filter_deps="gpl"
2496 histeq_filter_deps="gpl"
2497 hqdn3d_filter_deps="gpl"
2498 interlace_filter_deps="gpl"
2499 kerndeint_filter_deps="gpl"
2500 ladspa_filter_deps="ladspa dlopen"
2501 mcdeint_filter_deps="avcodec gpl"
2502 movie_filter_deps="avcodec avformat"
2503 mp_filter_deps="gpl avcodec swscale inline_asm"
2504 mpdecimate_filter_deps="gpl avcodec"
2505 mptestsrc_filter_deps="gpl"
2506 negate_filter_deps="lut_filter"
2507 perspective_filter_deps="gpl"
2508 ocv_filter_deps="libopencv"
2509 owdenoise_filter_deps="gpl"
2510 pan_filter_deps="swresample"
2511 phase_filter_deps="gpl"
2512 pp_filter_deps="gpl postproc"
2513 pullup_filter_deps="gpl"
2514 removelogo_filter_deps="avcodec avformat swscale"
2515 resample_filter_deps="avresample"
2516 sab_filter_deps="gpl swscale"
2517 scale_filter_deps="swscale"
2518 smartblur_filter_deps="gpl swscale"
2519 showspectrum_filter_deps="avcodec"
2520 showspectrum_filter_select="rdft"
2521 spp_filter_deps="gpl avcodec"
2522 spp_filter_select="fft"
2523 stereo3d_filter_deps="gpl"
2524 subtitles_filter_deps="avformat avcodec libass"
2525 super2xsai_filter_deps="gpl"
2526 tinterlace_filter_deps="gpl"
2527 vidstabdetect_filter_deps="libvidstab"
2528 vidstabtransform_filter_deps="libvidstab"
2529 pixfmts_super2xsai_test_deps="super2xsai_filter"
2530 tinterlace_merge_test_deps="tinterlace_filter"
2531 tinterlace_pad_test_deps="tinterlace_filter"
2532 zmq_filter_deps="libzmq"
2533
2534 # examples
2535 avio_reading="avformat avcodec avutil"
2536 avcodec_example_deps="avcodec avutil"
2537 demuxing_decoding_example_deps="avcodec avformat avutil"
2538 filter_audio_example_deps="avfilter avutil"
2539 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2540 filtering_video_example_deps="avfilter avcodec avformat avutil"
2541 metadata_example_deps="avformat avutil"
2542 muxing_example_deps="avcodec avformat avutil swscale"
2543 remuxing_example_deps="avcodec avformat avutil"
2544 resampling_audio_example_deps="avutil swresample"
2545 scaling_video_example_deps="avutil swscale"
2546 transcode_aac_example_deps="avcodec avformat swresample"
2547 transcoding_example_deps="avfilter avcodec avformat avutil"
2548
2549 # libraries, in linking order
2550 avcodec_deps="avutil"
2551 avdevice_deps="avformat avcodec avutil"
2552 avfilter_deps="avutil"
2553 avformat_deps="avcodec avutil"
2554 avresample_deps="avutil"
2555 postproc_deps="avutil gpl"
2556 swresample_deps="avutil"
2557 swscale_deps="avutil"
2558
2559 # programs
2560 ffmpeg_deps="avcodec avfilter avformat swresample"
2561 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2562                null_filter
2563                setpts_filter trim_filter"
2564 ffplay_deps="avcodec avformat swscale swresample sdl"
2565 ffplay_libs='$sdl_libs'
2566 ffplay_select="rdft crop_filter"
2567 ffprobe_deps="avcodec avformat"
2568 ffserver_deps="avformat fork sarestart"
2569 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2570
2571 # documentation
2572 podpages_deps="perl"
2573 manpages_deps="perl pod2man"
2574 htmlpages_deps="perl texi2html"
2575 txtpages_deps="perl makeinfo"
2576 doc_deps_any="manpages htmlpages podpages txtpages"
2577
2578 # default parameters
2579
2580 logfile="config.log"
2581
2582 # installation paths
2583 prefix_default="/usr/local"
2584 bindir_default='${prefix}/bin'
2585 datadir_default='${prefix}/share/ffmpeg'
2586 docdir_default='${prefix}/share/doc/ffmpeg'
2587 incdir_default='${prefix}/include'
2588 libdir_default='${prefix}/lib'
2589 mandir_default='${prefix}/share/man'
2590 shlibdir_default="$libdir_default"
2591
2592 # toolchain
2593 ar_default="ar"
2594 cc_default="gcc"
2595 cxx_default="g++"
2596 host_cc_default="gcc"
2597 cp_f="cp -f"
2598 install="install"
2599 ln_s="ln -s -f"
2600 nm_default="nm -g"
2601 objformat="elf"
2602 pkg_config_default=pkg-config
2603 ranlib_default="ranlib"
2604 strip_default="strip"
2605 yasmexe_default="yasm"
2606 windres_default="windres"
2607
2608 nogas=":"
2609
2610 # OS
2611 target_os_default=$(tolower $(uname -s))
2612 host_os=$target_os_default
2613
2614 # machine
2615 if test "$target_os_default" = aix; then
2616     arch_default=$(uname -p)
2617 else
2618     arch_default=$(uname -m)
2619 fi
2620 cpu="generic"
2621
2622 # configurable options
2623 enable $PROGRAM_LIST
2624 enable $DOCUMENT_LIST
2625 enable $EXAMPLE_LIST
2626 enable $(filter_out avresample $LIBRARY_LIST)
2627 enable stripping
2628
2629 enable asm
2630 enable debug
2631 enable doc
2632 enable optimizations
2633 enable runtime_cpudetect
2634 enable safe_bitstream_reader
2635 enable static
2636 enable swscale_alpha
2637
2638 # Enable hwaccels by default.
2639 enable dxva2 vaapi vda vdpau xvmc
2640 enable xlib
2641
2642 # build settings
2643 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2644 LIBPREF="lib"
2645 LIBSUF=".a"
2646 FULLNAME='$(NAME)$(BUILDSUF)'
2647 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2648 SLIBPREF="lib"
2649 SLIBSUF=".so"
2650 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2651 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2652 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2653 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2654 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2655 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2656
2657 asflags_filter=echo
2658 cflags_filter=echo
2659 ldflags_filter=echo
2660
2661 AS_C='-c'
2662 AS_O='-o $@'
2663 CC_C='-c'
2664 CC_E='-E -o $@'
2665 CC_O='-o $@'
2666 CXX_C='-c'
2667 CXX_O='-o $@'
2668 LD_O='-o $@'
2669 LD_LIB='-l%'
2670 LD_PATH='-L'
2671 HOSTCC_C='-c'
2672 HOSTCC_E='-E -o $@'
2673 HOSTCC_O='-o $@'
2674 HOSTLD_O='-o $@'
2675
2676 host_libs='-lm'
2677 host_cflags_filter=echo
2678 host_ldflags_filter=echo
2679
2680 target_path='$(CURDIR)'
2681
2682 # since the object filename is not given with the -MM flag, the compiler
2683 # is only able to print the basename, and we must add the path ourselves
2684 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2685 DEPFLAGS='-MM'
2686
2687 # find source path
2688 if test -f configure; then
2689     source_path=.
2690 else
2691     source_path=$(cd $(dirname "$0"); pwd)
2692     echo "$source_path" | grep -q '[[:blank:]]' &&
2693         die "Out of tree builds are impossible with whitespace in source path."
2694     test -e "$source_path/config.h" &&
2695         die "Out of tree builds are impossible with config.h in source dir."
2696 fi
2697
2698 for v in "$@"; do
2699     r=${v#*=}
2700     l=${v%"$r"}
2701     r=$(sh_quote "$r")
2702     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2703 done
2704
2705 find_things(){
2706     thing=$1
2707     pattern=$2
2708     file=$source_path/$3
2709     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2710 }
2711
2712 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2713 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2714 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2715 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2716 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2717 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2718 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2719 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2720 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2721 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2722 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2723
2724 ALL_COMPONENTS="
2725     $BSF_LIST
2726     $DECODER_LIST
2727     $DEMUXER_LIST
2728     $ENCODER_LIST
2729     $FILTER_LIST
2730     $HWACCEL_LIST
2731     $INDEV_LIST
2732     $MUXER_LIST
2733     $OUTDEV_LIST
2734     $PARSER_LIST
2735     $PROTOCOL_LIST
2736 "
2737
2738 for n in $COMPONENT_LIST; do
2739     v=$(toupper ${n%s})_LIST
2740     eval enable \$$v
2741     eval ${n}_if_any="\$$v"
2742 done
2743
2744 enable $ARCH_EXT_LIST
2745
2746 die_unknown(){
2747     echo "Unknown option \"$1\"."
2748     echo "See $0 --help for available options."
2749     exit 1
2750 }
2751
2752 print_3_columns() {
2753     cat | tr ' ' '\n' | sort | pr -r -3 -t
2754 }
2755
2756 show_list() {
2757     suffix=_$1
2758     shift
2759     echo $* | sed s/$suffix//g | print_3_columns
2760     exit 0
2761 }
2762
2763 rand_list(){
2764     IFS=', '
2765     set -- $*
2766     unset IFS
2767     for thing; do
2768         comp=${thing%:*}
2769         prob=${thing#$comp}
2770         prob=${prob#:}
2771         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2772         echo "prob ${prob:-0.5}"
2773         printf '%s\n' $comp
2774     done
2775 }
2776
2777 do_random(){
2778     action=$1
2779     shift
2780     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2781     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2782 }
2783
2784 for opt do
2785     optval="${opt#*=}"
2786     case "$opt" in
2787         --extra-ldflags=*)
2788             add_ldflags $optval
2789         ;;
2790         --extra-libs=*)
2791             add_extralibs $optval
2792         ;;
2793         --disable-devices)
2794             disable $INDEV_LIST $OUTDEV_LIST
2795         ;;
2796         --enable-debug=*)
2797             debuglevel="$optval"
2798         ;;
2799         --disable-programs)
2800             disable $PROGRAM_LIST
2801         ;;
2802         --disable-everything)
2803             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2804         ;;
2805         --disable-all)
2806             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2807             disable $LIBRARY_LIST $PROGRAM_LIST doc
2808         ;;
2809         --enable-random|--disable-random)
2810             action=${opt%%-random}
2811             do_random ${action#--} $COMPONENT_LIST
2812         ;;
2813         --enable-random=*|--disable-random=*)
2814             action=${opt%%-random=*}
2815             do_random ${action#--} $optval
2816         ;;
2817         --enable-*=*|--disable-*=*)
2818             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2819             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2820             eval list=\$$(toupper $thing)_LIST
2821             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2822             list=$(filter "$name" $list)
2823             [ "$list" = "" ] && warn "Option $opt did not match anything"
2824             $action $list
2825         ;;
2826         --enable-?*|--disable-?*)
2827             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2828             if is_in $option $COMPONENT_LIST; then
2829                 test $action = disable && action=unset
2830                 eval $action \$$(toupper ${option%s})_LIST
2831             elif is_in $option $CMDLINE_SELECT; then
2832                 $action $option
2833             else
2834                 die_unknown $opt
2835             fi
2836         ;;
2837         --list-*)
2838             NAME="${opt#--list-}"
2839             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2840             NAME=${NAME%s}
2841             eval show_list $NAME \$$(toupper $NAME)_LIST
2842         ;;
2843         --help|-h) show_help
2844         ;;
2845         --fatal-warnings) enable fatal_warnings
2846         ;;
2847         *)
2848             optname="${opt%%=*}"
2849             optname="${optname#--}"
2850             optname=$(echo "$optname" | sed 's/-/_/g')
2851             if is_in $optname $CMDLINE_SET; then
2852                 eval $optname='$optval'
2853             elif is_in $optname $CMDLINE_APPEND; then
2854                 append $optname "$optval"
2855             else
2856                 die_unknown $opt
2857             fi
2858         ;;
2859     esac
2860 done
2861
2862 disabled logging && logfile=/dev/null
2863
2864 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2865 set >> $logfile
2866
2867 test -n "$cross_prefix" && enable cross_compile
2868
2869 if enabled cross_compile; then
2870     test -n "$arch" && test -n "$target_os" ||
2871         die "Must specify target arch and OS when cross-compiling"
2872 fi
2873
2874 ar_default="${cross_prefix}${ar_default}"
2875 cc_default="${cross_prefix}${cc_default}"
2876 cxx_default="${cross_prefix}${cxx_default}"
2877 nm_default="${cross_prefix}${nm_default}"
2878 pkg_config_default="${cross_prefix}${pkg_config_default}"
2879 ranlib_default="${cross_prefix}${ranlib_default}"
2880 strip_default="${cross_prefix}${strip_default}"
2881 windres_default="${cross_prefix}${windres_default}"
2882
2883 sysinclude_default="${sysroot}/usr/include"
2884
2885 test -n "$valgrind" && toolchain="valgrind-memcheck"
2886
2887 case "$toolchain" in
2888     clang-asan)
2889         cc_default="clang"
2890         add_cflags  -fsanitize=address
2891         add_ldflags -fsanitize=address
2892     ;;
2893     clang-tsan)
2894         cc_default="clang"
2895         add_cflags  -fsanitize=thread -pie
2896         add_ldflags -fsanitize=thread -pie
2897     ;;
2898     clang-usan)
2899         cc_default="clang"
2900         add_cflags  -fsanitize=undefined
2901         add_ldflags -fsanitize=undefined
2902     ;;
2903     gcc-asan)
2904         cc_default="gcc"
2905         add_cflags  -fsanitize=address
2906         add_ldflags -fsanitize=address
2907     ;;
2908     gcc-tsan)
2909         cc_default="gcc"
2910         add_cflags  -fsanitize=thread -pie -fPIC
2911         add_ldflags -fsanitize=thread -pie -fPIC
2912     ;;
2913     gcc-usan)
2914         cc_default="gcc"
2915         add_cflags  -fsanitize=undefined
2916         add_ldflags -fsanitize=undefined
2917     ;;
2918     valgrind-massif)
2919         target_exec_default=${valgrind:-"valgrind"}
2920         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"
2921     ;;
2922     valgrind-memcheck)
2923         target_exec_default=${valgrind:-"valgrind"}
2924         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2925     ;;
2926     msvc)
2927         # Check whether the current MSVC version needs the C99 converter.
2928         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2929         # support enough of C99 to build ffmpeg. Default to the new
2930         # behaviour if the regexp was unable to match anything, since this
2931         # successfully parses the version number of existing supported
2932         # versions that require the converter (MSVC 2010 and 2012).
2933         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2934         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2935             cc_default="cl"
2936         else
2937             cc_default="c99wrap cl"
2938         fi
2939         ld_default="link"
2940         nm_default="dumpbin -symbols"
2941         ar_default="lib"
2942         target_os_default="win32"
2943         # Use a relative path for TMPDIR. This makes sure all the
2944         # ffconf temp files are written with a relative path, avoiding
2945         # issues with msys/win32 path conversion for MSVC parameters
2946         # such as -Fo<file> or -out:<file>.
2947         TMPDIR=.
2948     ;;
2949     icl)
2950         cc_default="icl"
2951         ld_default="xilink"
2952         nm_default="dumpbin -symbols"
2953         ar_default="xilib"
2954         target_os_default="win32"
2955         TMPDIR=.
2956     ;;
2957     gcov)
2958         add_cflags  -fprofile-arcs -ftest-coverage
2959         add_ldflags -fprofile-arcs -ftest-coverage
2960     ;;
2961     hardened)
2962         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2963         add_ldflags -Wl,-z,relro -Wl,-z,now
2964     ;;
2965     ?*)
2966         die "Unknown toolchain $toolchain"
2967     ;;
2968 esac
2969
2970 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2971 enabled cross_compile || host_cc_default=$cc
2972 set_default host_cc
2973
2974 if ! $pkg_config --version >/dev/null 2>&1; then
2975     warn "$pkg_config not found, library detection may fail."
2976     pkg_config=false
2977 fi
2978
2979 exesuf() {
2980     case $1 in
2981         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2982     esac
2983 }
2984
2985 EXESUF=$(exesuf $target_os)
2986 HOSTEXESUF=$(exesuf $host_os)
2987
2988 # set temporary file name
2989 : ${TMPDIR:=$TEMPDIR}
2990 : ${TMPDIR:=$TMP}
2991 : ${TMPDIR:=/tmp}
2992
2993 if [ -n "$tempprefix" ] ; then
2994     mktemp(){
2995         echo $tempprefix.${HOSTNAME}.${UID}
2996     }
2997 elif ! check_cmd mktemp -u XXXXXX; then
2998     # simple replacement for missing mktemp
2999     # NOT SAFE FOR GENERAL USE
3000     mktemp(){
3001         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3002     }
3003 fi
3004
3005 tmpfile(){
3006     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3007         (set -C; exec > $tmp) 2>/dev/null ||
3008         die "Unable to create temporary file in $TMPDIR."
3009     append TMPFILES $tmp
3010     eval $1=$tmp
3011 }
3012
3013 trap 'rm -f -- $TMPFILES' EXIT
3014
3015 tmpfile TMPASM .asm
3016 tmpfile TMPC   .c
3017 tmpfile TMPCPP .cpp
3018 tmpfile TMPE   $EXESUF
3019 tmpfile TMPH   .h
3020 tmpfile TMPM   .m
3021 tmpfile TMPO   .o
3022 tmpfile TMPS   .S
3023 tmpfile TMPSH  .sh
3024 tmpfile TMPV   .ver
3025
3026 unset -f mktemp
3027
3028 chmod +x $TMPE
3029
3030 # make sure we can execute files in $TMPDIR
3031 cat > $TMPSH 2>> $logfile <<EOF
3032 #! /bin/sh
3033 EOF
3034 chmod +x $TMPSH >> $logfile 2>&1
3035 if ! $TMPSH >> $logfile 2>&1; then
3036     cat <<EOF
3037 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3038 variable to another directory and make sure that it is not mounted noexec.
3039 EOF
3040     die "Sanity test failed."
3041 fi
3042
3043 ccc_flags(){
3044     for flag; do
3045         case $flag in
3046             -std=c99)           echo -c99                       ;;
3047             -mcpu=*)            echo -arch ${flag#*=}           ;;
3048             -mieee)             echo -ieee                      ;;
3049             -O*|-fast)          echo $flag                      ;;
3050             -fno-math-errno)    echo -assume nomath_errno       ;;
3051             -g)                 echo -g3                        ;;
3052             -Wall)              echo -msg_enable level2         ;;
3053             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3054             -Wl,*)              echo $flag                      ;;
3055             -f*|-W*)                                            ;;
3056             *)                  echo $flag                      ;;
3057         esac
3058    done
3059 }
3060
3061 cparser_flags(){
3062     for flag; do
3063         case $flag in
3064             -Wno-switch)             echo -Wno-switch-enum ;;
3065             -Wno-format-zero-length) ;;
3066             -Wdisabled-optimization) ;;
3067             -Wno-pointer-sign)       echo -Wno-other ;;
3068             *)                       echo $flag ;;
3069         esac
3070     done
3071 }
3072
3073 msvc_common_flags(){
3074     for flag; do
3075         case $flag in
3076             # In addition to specifying certain flags under the compiler
3077             # specific filters, they must be specified here as well or else the
3078             # generic catch all at the bottom will print the original flag.
3079             -Wall)                ;;
3080             -std=c99)             ;;
3081             # Common flags
3082             -fomit-frame-pointer) ;;
3083             -g)                   echo -Z7 ;;
3084             -fno-math-errno)      ;;
3085             -fno-common)          ;;
3086             -fno-signed-zeros)    ;;
3087             -fPIC)                ;;
3088             -mthumb)              ;;
3089             -march=*)             ;;
3090             -lz)                  echo zlib.lib ;;
3091             -lavifil32)           echo vfw32.lib ;;
3092             -lavicap32)           echo vfw32.lib user32.lib ;;
3093             -l*)                  echo ${flag#-l}.lib ;;
3094             *)                    echo $flag ;;
3095         esac
3096     done
3097 }
3098
3099 msvc_flags(){
3100     msvc_common_flags "$@"
3101     for flag; do
3102         case $flag in
3103             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3104                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3105                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3106                                        -wd4554 \
3107                                        -wd4273 ;;
3108         esac
3109     done
3110 }
3111
3112 icl_flags(){
3113     msvc_common_flags "$@"
3114     for flag; do
3115         case $flag in
3116             # Despite what Intel's documentation says -Wall, which is supported
3117             # on Windows, does enable remarks so disable them here.
3118             -Wall)                echo $flag -Qdiag-disable:remark ;;
3119             -std=c99)             echo -Qstd=c99 ;;
3120         esac
3121     done
3122 }
3123
3124 icc_flags(){
3125     for flag; do
3126         case $flag in
3127             -flto)                echo -ipo ;;
3128             *)                    echo $flag ;;
3129         esac
3130     done
3131 }
3132
3133 pgi_flags(){
3134     for flag; do
3135         case $flag in
3136             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3137             -fomit-frame-pointer) echo -Mnoframe ;;
3138             -g)                   echo -gopt ;;
3139             *)                    echo $flag ;;
3140         esac
3141     done
3142 }
3143
3144 suncc_flags(){
3145     for flag; do
3146         case $flag in
3147             -march=*|-mcpu=*)
3148                 case "${flag#*=}" in
3149                     native)                   echo -xtarget=native       ;;
3150                     v9|niagara)               echo -xarch=sparc          ;;
3151                     ultrasparc)               echo -xarch=sparcvis       ;;
3152                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3153                     i586|pentium)             echo -xchip=pentium        ;;
3154                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3155                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3156                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3157                     pentium4*)          echo -xtarget=pentium4           ;;
3158                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3159                     *-sse3)             echo -xarch=sse3                 ;;
3160                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3161                     bonnell)                   echo -xarch=ssse3         ;;
3162                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3163                     westmere)                  echo -xtarget=westmere    ;;
3164                     silvermont)                echo -xarch=sse4_2        ;;
3165                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3166                     core-avx*|ivybridge|haswell|broadwell)
3167                                                echo -xarch=avx           ;;
3168                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3169                     btver1)                    echo -xarch=amdsse4a      ;;
3170                     btver2|bdver*)             echo -xarch=avx           ;;
3171                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3172                     k8|opteron|athlon64|athlon-fx)
3173                                                echo -xarch=sse2a         ;;
3174                     athlon*)                   echo -xarch=pentium_proa  ;;
3175                 esac
3176                 ;;
3177             -std=c99)             echo -xc99              ;;
3178             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3179             -fPIC)                echo -KPIC -xcode=pic32 ;;
3180             -W*,*)                echo $flag              ;;
3181             -f*-*|-W*|-mimpure-text)                      ;;
3182             -shared)              echo -G                 ;;
3183             *)                    echo $flag              ;;
3184         esac
3185     done
3186 }
3187
3188 tms470_flags(){
3189     for flag; do
3190         case $flag in
3191             -march=*|-mcpu=*)
3192                 case "${flag#*=}" in
3193                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3194                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3195                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3196                     armv6*|arm11*)          echo -mv=6   ;;
3197                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3198                                             echo -mv=5e  ;;
3199                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3200                 esac
3201                 ;;
3202             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3203             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3204             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3205             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3206             -msoft-float)   echo --float_support=vfplib       ;;
3207             -O[0-3]|-mf=*)  echo $flag                        ;;
3208             -g)             echo -g -mn                       ;;
3209             -pds=*)         echo $flag                        ;;
3210             -D*|-I*)        echo $flag                        ;;
3211             --gcc|--abi=*)  echo $flag                        ;;
3212             -me)            echo $flag                        ;;
3213         esac
3214     done
3215 }
3216
3217 probe_cc(){
3218     pfx=$1
3219     _cc=$2
3220
3221     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3222     unset _ld_o _ldflags _ld_lib _ld_path
3223     unset _depflags _DEPCMD _DEPFLAGS
3224     _flags_filter=echo
3225
3226     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3227         true # no-op to avoid reading stdin in following checks
3228     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3229         _type=llvm_gcc
3230         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3231         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3232         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3233         _cflags_speed='-O3'
3234         _cflags_size='-Os'
3235     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3236         _type=gcc
3237         gcc_version=$($_cc --version | head -n1)
3238         gcc_basever=$($_cc -dumpversion)
3239         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3240         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3241         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3242         if ! $_cc -dumpversion | grep -q '^2\.'; then
3243             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3244         fi
3245         _cflags_speed='-O3'
3246         _cflags_size='-Os'
3247     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3248         _type=icc
3249         _ident=$($_cc --version | head -n1)
3250         _depflags='-MMD'
3251         _cflags_speed='-O3'
3252         _cflags_size='-Os'
3253         _cflags_noopt='-O1'
3254         _flags_filter=icc_flags
3255     elif $_cc -v 2>&1 | grep -q xlc; then
3256         _type=xlc
3257         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3258         _cflags_speed='-O5'
3259         _cflags_size='-O5 -qcompact'
3260     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3261         _type=ccc
3262         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3263         _DEPFLAGS='-M'
3264         _cflags_speed='-fast'
3265         _cflags_size='-O1'
3266         _flags_filter=ccc_flags
3267     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3268         test -d "$sysroot" || die "No valid sysroot specified."
3269         _type=armcc
3270         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3271         armcc_conf="$PWD/armcc.conf"
3272         $_cc --arm_linux_configure                 \
3273              --arm_linux_config_file="$armcc_conf" \
3274              --configure_sysroot="$sysroot"        \
3275              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3276              die "Error creating armcc configuration file."
3277         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3278         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3279         as_default="${cross_prefix}gcc"
3280         _depflags='-MMD'
3281         _cflags_speed='-O3'
3282         _cflags_size='-Os'
3283     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3284         _type=tms470
3285         _ident=$($_cc -version | head -n1 | tr -s ' ')
3286         _flags='--gcc --abi=eabi -me'
3287         _cc_e='-ppl -fe=$@'
3288         _cc_o='-fe=$@'
3289         _depflags='-ppa -ppd=$(@:.o=.d)'
3290         _cflags_speed='-O3 -mf=5'
3291         _cflags_size='-O3 -mf=2'
3292         _flags_filter=tms470_flags
3293     elif $_cc -v 2>&1 | grep -q clang; then
3294         _type=clang
3295         _ident=$($_cc --version | head -n1)
3296         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3297         _cflags_speed='-O3'
3298         _cflags_size='-Os'
3299     elif $_cc -V 2>&1 | grep -q Sun; then
3300         _type=suncc
3301         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3302         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3303         _DEPFLAGS='-xM1 -xc99'
3304         _ldflags='-std=c99'
3305         _cflags_speed='-O5'
3306         _cflags_size='-O5 -xspace'
3307         _flags_filter=suncc_flags
3308     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3309         _type=pathscale
3310         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3311         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3312         _cflags_speed='-O2'
3313         _cflags_size='-Os'
3314         _flags_filter='filter_out -Wdisabled-optimization'
3315     elif $_cc -v 2>&1 | grep -q Open64; then
3316         _type=open64
3317         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3318         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3319         _cflags_speed='-O2'
3320         _cflags_size='-Os'
3321         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3322     elif $_cc -V 2>&1 | grep -q Portland; then
3323         _type=pgi
3324         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3325         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3326         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3327         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3328         _cflags_noopt="-O"
3329         _flags_filter=pgi_flags
3330     elif $_cc 2>&1 | grep -q Microsoft; then
3331         _type=msvc
3332         _ident=$($cc 2>&1 | head -n1)
3333         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3334         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3335         _cflags_speed="-O2"
3336         _cflags_size="-O1"
3337         if $_cc 2>&1 | grep -q Linker; then
3338             _ld_o='-out:$@'
3339         else
3340             _ld_o='-Fe$@'
3341         fi
3342         _cc_o='-Fo$@'
3343         _cc_e='-P -Fi$@'
3344         _flags_filter=msvc_flags
3345         _ld_lib='lib%.a'
3346         _ld_path='-libpath:'
3347         _flags='-nologo'
3348         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3349         if [ $pfx = hostcc ]; then
3350             append _cflags -Dsnprintf=_snprintf
3351         fi
3352         disable stripping
3353     elif $_cc 2>&1 | grep -q Intel; then
3354         _type=icl
3355         _ident=$($cc 2>&1 | head -n1)
3356         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3357         # Not only is O3 broken on 13.x+ but it is slower on all previous
3358         # versions (tested) as well.
3359         _cflags_speed="-O2"
3360         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3361         if $_cc 2>&1 | grep -q Linker; then
3362             _ld_o='-out:$@'
3363         else
3364             _ld_o='-Fe$@'
3365         fi
3366         _cc_o='-Fo$@'
3367         _cc_e='-P'
3368         _flags_filter=icl_flags
3369         _ld_lib='lib%.a'
3370         _ld_path='-libpath:'
3371         # -Qdiag-error to make icl error when seeing certain unknown arguments
3372         _flags='-nologo -Qdiag-error:4044,10157'
3373         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3374         # with MSVC which enables it by default.
3375         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3376         if [ $pfx = hostcc ]; then
3377             append _cflags -Dsnprintf=_snprintf
3378         fi
3379     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3380         _type=cparser
3381         _ident=$($_cc --version | head -n1)
3382         _depflags='-MMD'
3383         _cflags_speed='-O4'
3384         _cflags_size='-O2'
3385         _flags_filter=cparser_flags
3386     fi
3387
3388     eval ${pfx}_type=\$_type
3389     eval ${pfx}_ident=\$_ident
3390 }
3391
3392 set_ccvars(){
3393     eval ${1}_C=\${_cc_c-\${${1}_C}}
3394     eval ${1}_E=\${_cc_e-\${${1}_E}}
3395     eval ${1}_O=\${_cc_o-\${${1}_O}}
3396
3397     if [ -n "$_depflags" ]; then
3398         eval ${1}_DEPFLAGS=\$_depflags
3399     else
3400         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3401         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3402         eval DEP${1}FLAGS=\$_flags
3403     fi
3404 }
3405
3406 probe_cc cc "$cc"
3407 cflags_filter=$_flags_filter
3408 cflags_speed=$_cflags_speed
3409 cflags_size=$_cflags_size
3410 cflags_noopt=$_cflags_noopt
3411 add_cflags $_flags $_cflags
3412 cc_ldflags=$_ldflags
3413 set_ccvars CC
3414
3415 probe_cc hostcc "$host_cc"
3416 host_cflags_filter=$_flags_filter
3417 add_host_cflags  $_flags $_cflags
3418 set_ccvars HOSTCC
3419
3420 test -n "$cc_type" && enable $cc_type ||
3421     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3422
3423 : ${as_default:=$cc}
3424 : ${dep_cc_default:=$cc}
3425 : ${ld_default:=$cc}
3426 : ${host_ld_default:=$host_cc}
3427 set_default ar as dep_cc ld host_ld windres
3428
3429 probe_cc as "$as"
3430 asflags_filter=$_flags_filter
3431 add_asflags $_flags $_cflags
3432 set_ccvars AS
3433
3434 probe_cc ld "$ld"
3435 ldflags_filter=$_flags_filter
3436 add_ldflags $_flags $_ldflags
3437 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3438 LD_O=${_ld_o-$LD_O}
3439 LD_LIB=${_ld_lib-$LD_LIB}
3440 LD_PATH=${_ld_path-$LD_PATH}
3441
3442 probe_cc hostld "$host_ld"
3443 host_ldflags_filter=$_flags_filter
3444 add_host_ldflags $_flags $_ldflags
3445 HOSTLD_O=${_ld_o-$HOSTLD_O}
3446
3447 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3448     probe_cc depcc "$dep_cc"
3449     CCDEP=${_DEPCMD:-$DEPCMD}
3450     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3451     DEPCCFLAGS=$_flags
3452 fi
3453
3454 if $ar 2>&1 | grep -q Microsoft; then
3455     arflags="-nologo"
3456     ar_o='-out:$@'
3457 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3458     arflags="rq"
3459     ar_o='$@'
3460 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3461     arflags='-Xany -r -c'
3462     ar_o='$@'
3463 else
3464     arflags="rc"
3465     ar_o='$@'
3466 fi
3467
3468 add_cflags $extra_cflags
3469 add_cxxflags $extra_cxxflags
3470 add_asflags $extra_cflags
3471
3472 if test -n "$sysroot"; then
3473     case "$cc_type" in
3474         gcc|llvm_gcc|clang)
3475             add_cppflags --sysroot="$sysroot"
3476             add_ldflags --sysroot="$sysroot"
3477 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3478             add_cppflags -isysroot "$sysroot"
3479             add_ldflags -isysroot "$sysroot"
3480         ;;
3481         tms470)
3482             add_cppflags -I"$sysinclude"
3483             add_ldflags  --sysroot="$sysroot"
3484         ;;
3485     esac
3486 fi
3487
3488 if test "$cpu" = host; then
3489     enabled cross_compile &&
3490         die "--cpu=host makes no sense when cross-compiling."
3491
3492     case "$cc_type" in
3493         gcc|llvm_gcc)
3494             check_native(){
3495                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3496                 sed -n "/cc1.*$1=/{
3497                             s/.*$1=\\([^ ]*\\).*/\\1/
3498                             p
3499                             q
3500                         }" $TMPE
3501             }
3502             cpu=$(check_native -march || check_native -mcpu)
3503         ;;
3504     esac
3505
3506     test "${cpu:-host}" = host &&
3507         die "--cpu=host not supported with compiler $cc"
3508 fi
3509
3510 # Deal with common $arch aliases
3511 case "$arch" in
3512     aarch64|arm64)
3513         arch="aarch64"
3514     ;;
3515     arm*|iPad*|iPhone*)
3516         arch="arm"
3517     ;;
3518     mips*|IP*)
3519         arch="mips"
3520     ;;
3521     parisc*|hppa*)
3522         arch="parisc"
3523     ;;
3524     "Power Macintosh"|ppc*|powerpc*)
3525         arch="ppc"
3526     ;;
3527     s390|s390x)
3528         arch="s390"
3529     ;;
3530     sh4|sh)
3531         arch="sh4"
3532     ;;
3533     sun4u|sparc*)
3534         arch="sparc"
3535     ;;
3536     tilegx|tile-gx)
3537         arch="tilegx"
3538     ;;
3539     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3540         arch="x86"
3541     ;;
3542 esac
3543
3544 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3545 enable $arch
3546
3547 # Add processor-specific flags
3548 if enabled aarch64; then
3549
3550     case $cpu in
3551         armv*)
3552             cpuflags="-march=$cpu"
3553         ;;
3554         *)
3555             cpuflags="-mcpu=$cpu"
3556         ;;
3557     esac
3558
3559 elif enabled alpha; then
3560
3561     cpuflags="-mcpu=$cpu"
3562
3563 elif enabled arm; then
3564
3565     check_arm_arch() {
3566         check_cpp_condition stddef.h \
3567             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3568             $cpuflags
3569     }
3570
3571     probe_arm_arch() {
3572         if   check_arm_arch 4;        then echo armv4;
3573         elif check_arm_arch 4T;       then echo armv4t;
3574         elif check_arm_arch 5;        then echo armv5;
3575         elif check_arm_arch 5E;       then echo armv5e;
3576         elif check_arm_arch 5T;       then echo armv5t;
3577         elif check_arm_arch 5TE;      then echo armv5te;
3578         elif check_arm_arch 5TEJ;     then echo armv5te;
3579         elif check_arm_arch 6;        then echo armv6;
3580         elif check_arm_arch 6J;       then echo armv6j;
3581         elif check_arm_arch 6K;       then echo armv6k;
3582         elif check_arm_arch 6Z;       then echo armv6z;
3583         elif check_arm_arch 6ZK;      then echo armv6zk;
3584         elif check_arm_arch 6T2;      then echo armv6t2;
3585         elif check_arm_arch 7;        then echo armv7;
3586         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3587         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3588         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3589         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3590         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3591         fi
3592     }
3593
3594     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3595
3596     case $cpu in
3597         armv*)
3598             cpuflags="-march=$cpu"
3599             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3600         ;;
3601         *)
3602             cpuflags="-mcpu=$cpu"
3603             case $cpu in
3604                 cortex-a*)                               subarch=armv7a  ;;
3605                 cortex-r*)                               subarch=armv7r  ;;
3606                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3607                 arm11*)                                  subarch=armv6   ;;
3608                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3609                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3610                 *)                             subarch=$(probe_arm_arch) ;;
3611             esac
3612         ;;
3613     esac
3614
3615     case "$subarch" in
3616         armv5t*)    enable fast_clz                ;;
3617         armv[6-8]*) enable fast_clz fast_unaligned ;;
3618     esac
3619
3620 elif enabled avr32; then
3621
3622     case $cpu in
3623         ap7[02]0[0-2])
3624             subarch="avr32_ap"
3625             cpuflags="-mpart=$cpu"
3626         ;;
3627         ap)
3628             subarch="avr32_ap"
3629             cpuflags="-march=$cpu"
3630         ;;
3631         uc3[ab]*)
3632             subarch="avr32_uc"
3633             cpuflags="-mcpu=$cpu"
3634         ;;
3635         uc)
3636             subarch="avr32_uc"
3637             cpuflags="-march=$cpu"
3638         ;;
3639     esac
3640
3641 elif enabled bfin; then
3642
3643     cpuflags="-mcpu=$cpu"
3644
3645 elif enabled mips; then
3646
3647     cpuflags="-march=$cpu"
3648
3649     case $cpu in
3650         24kc)
3651             disable mipsfpu
3652             disable mipsdspr1
3653             disable mipsdspr2
3654         ;;
3655         24kf*)
3656             disable mipsdspr1
3657             disable mipsdspr2
3658         ;;
3659         24kec|34kc|1004kc)
3660             disable mipsfpu
3661             disable mipsdspr2
3662         ;;
3663         24kef*|34kf*|1004kf*)
3664             disable mipsdspr2
3665         ;;
3666         74kc)
3667             disable mipsfpu
3668         ;;
3669     esac
3670
3671 elif enabled ppc; then
3672
3673     disable ldbrx
3674
3675     case $(tolower $cpu) in
3676         601|ppc601|powerpc601)
3677             cpuflags="-mcpu=601"
3678             disable altivec
3679         ;;
3680         603*|ppc603*|powerpc603*)
3681             cpuflags="-mcpu=603"
3682             disable altivec
3683         ;;
3684         604*|ppc604*|powerpc604*)
3685             cpuflags="-mcpu=604"
3686             disable altivec
3687         ;;
3688         g3|75*|ppc75*|powerpc75*)
3689             cpuflags="-mcpu=750"
3690             disable altivec
3691         ;;
3692         g4|745*|ppc745*|powerpc745*)
3693             cpuflags="-mcpu=7450"
3694         ;;
3695         74*|ppc74*|powerpc74*)
3696             cpuflags="-mcpu=7400"
3697         ;;
3698         g5|970|ppc970|powerpc970)
3699             cpuflags="-mcpu=970"
3700         ;;
3701         power[3-7]*)
3702             cpuflags="-mcpu=$cpu"
3703         ;;
3704         cell)
3705             cpuflags="-mcpu=cell"
3706             enable ldbrx
3707         ;;
3708         e500mc)
3709             cpuflags="-mcpu=e500mc"
3710             disable altivec
3711         ;;
3712         e500v2)
3713             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3714             disable altivec
3715             disable dcbzl
3716         ;;
3717         e500)
3718             cpuflags="-mcpu=8540 -mhard-float"
3719             disable altivec
3720             disable dcbzl
3721         ;;
3722     esac
3723
3724 elif enabled sparc; then
3725
3726     case $cpu in
3727         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3728             cpuflags="-mcpu=$cpu"
3729         ;;
3730         ultrasparc*|niagara[234])
3731             cpuflags="-mcpu=$cpu"
3732         ;;
3733     esac
3734
3735 elif enabled x86; then
3736
3737     case $cpu in
3738         i[345]86|pentium)
3739             cpuflags="-march=$cpu"
3740             disable mmx
3741         ;;
3742         # targets that do NOT support nopl and conditional mov (cmov)
3743         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3744             cpuflags="-march=$cpu"
3745             disable i686
3746         ;;
3747         # targets that do support nopl and conditional mov (cmov)
3748         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3749         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3750             cpuflags="-march=$cpu"
3751             enable i686
3752             enable fast_cmov
3753         ;;
3754         # targets that do support conditional mov but on which it's slow
3755         pentium4|pentium4m|prescott|nocona)
3756             cpuflags="-march=$cpu"
3757             enable i686
3758             disable fast_cmov
3759         ;;
3760     esac
3761
3762 fi
3763
3764 if [ "$cpu" != generic ]; then
3765     add_cflags  $cpuflags
3766     add_asflags $cpuflags
3767 fi
3768
3769 # compiler sanity check
3770 check_exec <<EOF
3771 int main(void){ return 0; }
3772 EOF
3773 if test "$?" != 0; then
3774     echo "$cc is unable to create an executable file."
3775     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3776         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3777         echo "Only do this if you know what cross compiling means."
3778     fi
3779     die "C compiler test failed."
3780 fi
3781
3782 add_cppflags -D_ISOC99_SOURCE
3783 add_cxxflags -D__STDC_CONSTANT_MACROS
3784 check_cflags -std=c99
3785 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3786 #include <stdlib.h>
3787 EOF
3788 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3789 #include <stdlib.h>
3790 EOF
3791
3792 add_host_cppflags -D_ISOC99_SOURCE
3793 check_host_cflags -std=c99
3794 check_host_cflags -Wall
3795 check_host_cflags -O3
3796
3797 check_64bit(){
3798     arch32=$1
3799     arch64=$2
3800     expr=$3
3801     check_code cc "" "int test[2*($expr) - 1]" &&
3802         subarch=$arch64 || subarch=$arch32
3803 }
3804
3805 case "$arch" in
3806     aarch64|alpha|ia64)
3807         spic=$shared
3808     ;;
3809     mips)
3810         check_64bit mips mips64 '_MIPS_SIM > 1'
3811         spic=$shared
3812     ;;
3813     parisc)
3814         check_64bit parisc parisc64 'sizeof(void *) > 4'
3815         spic=$shared
3816     ;;
3817     ppc)
3818         check_64bit ppc ppc64 'sizeof(void *) > 4'
3819         spic=$shared
3820     ;;
3821     s390)
3822         check_64bit s390 s390x 'sizeof(void *) > 4'
3823         spic=$shared
3824     ;;
3825     sparc)
3826         check_64bit sparc sparc64 'sizeof(void *) > 4'
3827         spic=$shared
3828     ;;
3829     x86)
3830         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3831         if test "$subarch" = "x86_64"; then
3832             spic=$shared
3833         fi
3834     ;;
3835     ppc)
3836         check_cc <<EOF && subarch="ppc64"
3837         int test[(int)sizeof(char*) - 7];
3838 EOF
3839     ;;
3840 esac
3841
3842 enable $subarch
3843 enabled spic && enable_weak pic
3844
3845 # OS specific
3846 case $target_os in
3847     aix)
3848         SHFLAGS=-shared
3849         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3850         enabled shared && add_ldflags -Wl,-brtl
3851         ;;
3852     haiku)
3853         prefix_default="/boot/common"
3854         network_extralibs="-lnetwork"
3855         host_libs=
3856         ;;
3857     sunos)
3858         SHFLAGS='-shared -Wl,-h,$$(@F)'
3859         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3860         network_extralibs="-lsocket -lnsl"
3861         # When using suncc to build, the Solaris linker will mark
3862         # an executable with each instruction set encountered by
3863         # the Solaris assembler.  As our libraries contain their own
3864         # guards for processor-specific code, instead suppress
3865         # generation of the HWCAPS ELF section on Solaris x86 only.
3866         enabled_all suncc x86 &&
3867             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3868             add_ldflags -Wl,-M,mapfile
3869         nm_default='nm -P -g'
3870         ;;
3871     netbsd)
3872         disable symver
3873         oss_indev_extralibs="-lossaudio"
3874         oss_outdev_extralibs="-lossaudio"
3875         enabled gcc || check_ldflags -Wl,-zmuldefs
3876         ;;
3877     openbsd|bitrig)
3878         disable symver
3879         SHFLAGS='-shared'
3880         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3881         SLIB_INSTALL_LINKS=
3882         oss_indev_extralibs="-lossaudio"
3883         oss_outdev_extralibs="-lossaudio"
3884         ;;
3885     dragonfly)
3886         disable symver
3887         ;;
3888     freebsd)
3889         ;;
3890     bsd/os)
3891         add_extralibs -lpoll -lgnugetopt
3892         strip="strip -d"
3893         ;;
3894     darwin)
3895         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3896         enabled ppc && add_asflags -force_cpusubtype_ALL
3897         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3898         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3899         strip="${strip} -x"
3900         add_ldflags -Wl,-dynamic,-search_paths_first
3901         SLIBSUF=".dylib"
3902         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3903         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3904         objformat="macho"
3905         enabled x86_64 && objformat="macho64"
3906         enabled_any pic shared ||
3907             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3908         ;;
3909     mingw32*)
3910         if test $target_os = "mingw32ce"; then
3911             disable network
3912         else
3913             target_os=mingw32
3914         fi
3915         LIBTARGET=i386
3916         if enabled x86_64; then
3917             LIBTARGET="i386:x86-64"
3918         elif enabled arm; then
3919             LIBTARGET=arm-wince
3920         fi
3921         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3922         check_ldflags -Wl,--nxcompat
3923         check_ldflags -Wl,--dynamicbase
3924         shlibdir_default="$bindir_default"
3925         SLIBPREF=""
3926         SLIBSUF=".dll"
3927         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3928         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3929         dlltool="${cross_prefix}dlltool"
3930         if check_cmd lib.exe -list; then
3931             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3932             if enabled x86_64; then
3933                 LIBTARGET=x64
3934             fi
3935         elif check_cmd $dlltool --version; then
3936             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3937         fi
3938         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3939         SLIB_INSTALL_LINKS=
3940         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3941         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3942         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3943         objformat="win32"
3944         ranlib=:
3945         enable dos_paths
3946         ;;
3947     win32|win64)
3948         disable symver
3949         if enabled shared; then
3950             # Link to the import library instead of the normal static library
3951             # for shared libs.
3952             LD_LIB='%.lib'
3953             # Cannot build both shared and static libs with MSVC or icl.
3954             disable static
3955         fi
3956         shlibdir_default="$bindir_default"
3957         SLIBPREF=""
3958         SLIBSUF=".dll"
3959         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3960         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3961         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3962         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3963         SLIB_INSTALL_LINKS=
3964         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3965         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3966         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3967         objformat="win32"
3968         ranlib=:
3969         enable dos_paths
3970         ;;
3971     cygwin*)
3972         target_os=cygwin
3973         shlibdir_default="$bindir_default"
3974         SLIBPREF="cyg"
3975         SLIBSUF=".dll"
3976         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3977         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3978         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3979         SLIB_INSTALL_LINKS=
3980         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3981         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3982         objformat="win32"
3983         enable dos_paths
3984         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3985         ;;
3986     *-dos|freedos|opendos)
3987         network_extralibs="-lsocket"
3988         objformat="coff"
3989         enable dos_paths
3990         add_cppflags -U__STRICT_ANSI__
3991         ;;
3992     linux)
3993         enable dv1394
3994         ;;
3995     irix*)
3996         target_os=irix
3997         ranlib="echo ignoring ranlib"
3998         ;;
3999     os/2*)
4000         strip="lxlite -CS"
4001         ln_s="cp -f"
4002         objformat="aout"
4003         add_cppflags -D_GNU_SOURCE
4004         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4005         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4006         LIBSUF="_s.a"
4007         SLIBPREF=""
4008         SLIBSUF=".dll"
4009         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4010         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4011         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4012             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4013             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4014             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4015             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4016             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4017         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4018             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4019         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4020         enable dos_paths
4021         enable_weak os2threads
4022         ;;
4023     gnu/kfreebsd)
4024         add_cppflags -D_BSD_SOURCE
4025         ;;
4026     gnu)
4027         ;;
4028     qnx)
4029         add_cppflags -D_QNX_SOURCE
4030         network_extralibs="-lsocket"
4031         ;;
4032     symbian)
4033         SLIBSUF=".dll"
4034         enable dos_paths
4035         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4036         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4037         add_ldflags -Wl,--target1-abs,--no-undefined \
4038                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4039                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4040         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4041                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4042                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4043         ;;
4044     osf1)
4045         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4046         ;;
4047     minix)
4048         ;;
4049     plan9)
4050         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4051                      -D_REENTRANT_SOURCE        \
4052                      -D_RESEARCH_SOURCE         \
4053                      -DFD_SETSIZE=96            \
4054                      -DHAVE_SOCK_OPTS
4055         add_compat strtod.o strtod=avpriv_strtod
4056         network_extralibs='-lbsd'
4057         exeobjs=compat/plan9/main.o
4058         disable ffserver
4059         cp_f='cp'
4060         ;;
4061     none)
4062         ;;
4063     *)
4064         die "Unknown OS '$target_os'."
4065         ;;
4066 esac
4067
4068 # determine libc flavour
4069
4070 probe_libc(){
4071     pfx=$1
4072     pfx_no_=${pfx%_}
4073     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4074     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4075         eval ${pfx}libc_type=uclibc
4076         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4077     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4078         eval ${pfx}libc_type=glibc
4079         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4080     # MinGW headers can be installed on Cygwin, so check for newlib first.
4081     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4082         eval ${pfx}libc_type=newlib
4083         add_${pfx}cppflags -U__STRICT_ANSI__
4084     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4085     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4086         eval ${pfx}libc_type=mingw64
4087         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4088             add_compat msvcrt/snprintf.o
4089             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4090         fi
4091         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4092         eval test \$${pfx_no_}cc_type = "gcc" &&
4093             add_${pfx}cppflags -D__printf__=__gnu_printf__
4094     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4095          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4096         eval ${pfx}libc_type=mingw32
4097         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4098             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4099             die "ERROR: MinGW32 runtime version must be >= 3.15."
4100         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4101         eval test \$${pfx_no_}cc_type = "gcc" &&
4102             add_${pfx}cppflags -D__printf__=__gnu_printf__
4103     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4104         eval ${pfx}libc_type=msvcrt
4105         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4106         # 0x601 by default unless something else is set by the user.
4107         # This can easily lead to us detecting functions only present
4108         # in such new versions and producing binaries requiring windows 7.0.
4109         # Therefore explicitly set the default to XP unless the user has
4110         # set something else on the command line.
4111         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4112             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4113     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4114         eval ${pfx}libc_type=klibc
4115     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4116         eval ${pfx}libc_type=bionic
4117     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4118         eval ${pfx}libc_type=solaris
4119         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4120     fi
4121 }
4122
4123 probe_libc
4124 test -n "$libc_type" && enable libc_$libc_type
4125 probe_libc host_
4126 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4127
4128 case $libc_type in
4129     bionic)
4130         add_compat strtod.o strtod=avpriv_strtod
4131         ;;
4132     msvcrt)
4133         add_compat strtod.o strtod=avpriv_strtod
4134         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4135                                      _snprintf=avpriv_snprintf  \
4136                                      vsnprintf=avpriv_vsnprintf
4137         ;;
4138 esac
4139
4140 # hacks for compiler/libc/os combinations
4141
4142 if enabled_all tms470 libc_glibc; then
4143     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4144     add_cppflags -D__USER_LABEL_PREFIX__=
4145     add_cppflags -D__builtin_memset=memset
4146     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4147     add_cflags   -pds=48    # incompatible redefinition of macro
4148 fi
4149
4150 if enabled_all ccc libc_glibc; then
4151     add_ldflags -Wl,-z,now  # calls to libots crash without this
4152 fi
4153
4154 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4155     add_cppflags '-I\$(SRC_PATH)/compat/float'
4156
4157 esc(){
4158     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4159 }
4160
4161 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4162
4163 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4164
4165 set_default $PATHS_LIST
4166 set_default nm
4167
4168 # we need to build at least one lib type
4169 if ! enabled_any static shared; then
4170     cat <<EOF
4171 At least one library type must be built.
4172 Specify --enable-static to build the static libraries or --enable-shared to
4173 build the shared libraries as well. To only build the shared libraries specify
4174 --disable-static in addition to --enable-shared.
4175 EOF
4176     exit 1;
4177 fi
4178
4179 die_license_disabled() {
4180     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4181 }
4182
4183 die_license_disabled_gpl() {
4184     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4185 }
4186
4187 die_license_disabled gpl frei0r
4188 die_license_disabled gpl libcdio
4189 die_license_disabled gpl libutvideo
4190 die_license_disabled gpl libvidstab
4191 die_license_disabled gpl libx264
4192 die_license_disabled gpl libx265
4193 die_license_disabled gpl libxavs
4194 die_license_disabled gpl libxvid
4195 die_license_disabled gpl libzvbi
4196 die_license_disabled gpl x11grab
4197
4198 die_license_disabled nonfree libaacplus
4199 die_license_disabled nonfree libfaac
4200 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4201 enabled gpl && die_license_disabled_gpl nonfree openssl
4202
4203 die_license_disabled version3 libopencore_amrnb
4204 die_license_disabled version3 libopencore_amrwb
4205 die_license_disabled version3 libvo_aacenc
4206 die_license_disabled version3 libvo_amrwbenc
4207
4208 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4209
4210 disabled optimizations || check_cflags -fomit-frame-pointer
4211
4212 enable_weak_pic() {
4213     disabled pic && return
4214     enable pic
4215     add_cppflags -DPIC
4216     case "$target_os" in
4217     mingw*|cygwin*)
4218         ;;
4219     *)
4220         add_cflags -fPIC
4221         ;;
4222     esac
4223     add_asflags  -fPIC
4224 }
4225
4226 enabled pic && enable_weak_pic
4227
4228 check_cc <<EOF || die "Symbol mangling check failed."
4229 int ff_extern;
4230 EOF
4231 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4232 extern_prefix=${sym%%ff_extern*}
4233
4234 check_cc <<EOF && enable_weak inline_asm
4235 void foo(void) { __asm__ volatile ("" ::); }
4236 EOF
4237
4238 _restrict=
4239 for restrict_keyword in restrict __restrict__ __restrict; do
4240     check_cc <<EOF && _restrict=$restrict_keyword && break
4241 void foo(char * $restrict_keyword p);
4242 EOF
4243 done
4244
4245 check_cc <<EOF && enable pragma_deprecated
4246 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4247 EOF
4248
4249 check_cc <<EOF && enable attribute_packed
4250 struct { int x; } __attribute__((packed)) x;
4251 EOF
4252
4253 check_cc <<EOF && enable attribute_may_alias
4254 union { int x; } __attribute__((may_alias)) x;
4255 EOF
4256
4257 check_cc <<EOF || die "endian test failed"
4258 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4259 EOF
4260 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4261
4262 check_inline_asm inline_asm_labels '"1:\n"'
4263
4264 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4265
4266 if enabled aarch64; then
4267     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4268     # internal assembler in clang 3.3 does not support this instruction
4269     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4270     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4271
4272     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4273
4274 elif enabled alpha; then
4275
4276     check_cflags -mieee
4277
4278 elif enabled arm; then
4279
4280     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4281 float func(float a, float b){ return a+b; }
4282 EOF
4283
4284     enabled thumb && check_cflags -mthumb || check_cflags -marm
4285     nogas=die
4286
4287     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4288         enable vfp_args
4289     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4290         case "${cross_prefix:-$cc}" in
4291             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4292             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4293 __asm__ (".eabi_attribute 28, 1");
4294 int main(void) { return 0; }
4295 EOF
4296         esac
4297         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4298     fi
4299
4300     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4301     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4302     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4303     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4304     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4305     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4306
4307     [ $target_os = linux ] ||
4308         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4309             $ARCH_EXT_LIST_ARM
4310
4311     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4312
4313     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4314
4315 elif enabled mips; then
4316
4317     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4318     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4319      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4320     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4321      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4322     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4323      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4324     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4325      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4326
4327 elif enabled parisc; then
4328
4329     if enabled gcc; then
4330         case $($cc -dumpversion) in
4331             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4332         esac
4333     fi
4334
4335 elif enabled ppc; then
4336
4337     enable local_aligned_8 local_aligned_16 local_aligned_32
4338
4339     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4340     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4341     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4342     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4343
4344     # AltiVec flags: The FSF version of GCC differs from the Apple version
4345     if enabled altivec; then
4346         if ! enabled_any pic ppc64; then
4347             nogas=warn
4348         fi
4349         check_cflags -maltivec -mabi=altivec &&
4350         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4351         check_cflags -faltivec
4352
4353         # check if our compiler supports Motorola AltiVec C API
4354         check_cc <<EOF || disable altivec
4355 $inc_altivec_h
4356 int main(void) {
4357     vector signed int v1 = (vector signed int) { 0 };
4358     vector signed int v2 = (vector signed int) { 1 };
4359     v1 = vec_add(v1, v2);
4360     return 0;
4361 }
4362 EOF
4363
4364         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4365     fi
4366
4367 elif enabled x86; then
4368
4369     check_builtin rdtsc    intrin.h   "__rdtsc()"
4370     check_builtin mm_empty mmintrin.h "_mm_empty()"
4371
4372     enable local_aligned_8 local_aligned_16 local_aligned_32
4373
4374     # check whether EBP is available on x86
4375     # As 'i' is stored on the stack, this program will crash
4376     # if the base pointer is used to access it because the
4377     # base pointer is cleared in the inline assembly code.
4378     check_exec_crash <<EOF && enable ebp_available
4379 volatile int i=0;
4380 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4381 return i;
4382 EOF
4383
4384     # check whether EBX is available on x86
4385     check_inline_asm ebx_available '""::"b"(0)' &&
4386         check_inline_asm ebx_available '"":::"%ebx"'
4387
4388     # check whether xmm clobbers are supported
4389     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4390
4391     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4392         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4393
4394     # check whether binutils is new enough to compile SSSE3/MMXEXT
4395     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4396     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4397
4398     if ! disabled_any asm mmx yasm; then
4399         if check_cmd $yasmexe --version; then
4400             enabled x86_64 && yasm_extra="-m amd64"
4401             yasm_debug="-g dwarf2"
4402         elif check_cmd nasm -v; then
4403             yasmexe=nasm
4404             yasm_debug="-g -F dwarf"
4405             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4406         fi
4407
4408         YASMFLAGS="-f $objformat $yasm_extra"
4409         enabled pic               && append YASMFLAGS "-DPIC"
4410         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4411         case "$objformat" in
4412             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4413         esac
4414
4415         check_yasm "movbe ecx, [5]" && enable yasm ||
4416             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4417         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4418         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4419         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4420         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4421         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4422         check_yasm "CPU amdnop" || disable cpunop
4423     fi
4424
4425     case "$cpu" in
4426         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4427             disable fast_clz
4428         ;;
4429     esac
4430
4431 fi
4432
4433 if enabled asm; then
4434     as=${gas:=$as}
4435     check_as <<EOF && enable gnu_as || \
4436         $nogas "GNU assembler not found, install gas-preprocessor"
4437 .macro m n
4438 \n: .int 0
4439 .endm
4440 m x
4441 EOF
4442 fi
4443
4444 check_ldflags -Wl,--as-needed
4445
4446 if check_func dlopen; then
4447     ldl=
4448 elif check_func dlopen -ldl; then
4449     ldl=-ldl
4450 fi
4451
4452 if ! disabled network; then
4453     check_func getaddrinfo $network_extralibs
4454     check_func getservbyport $network_extralibs
4455     check_func inet_aton $network_extralibs
4456
4457     check_type netdb.h "struct addrinfo"
4458     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4459     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4460     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4461     check_type poll.h "struct pollfd"
4462     check_type netinet/sctp.h "struct sctp_event_subscribe"
4463     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4464     check_type netinet/in.h "struct sockaddr_in6"
4465     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4466     check_type "sys/types.h sys/socket.h" socklen_t
4467
4468     # Prefer arpa/inet.h over winsock2
4469     if check_header arpa/inet.h ; then
4470         check_func closesocket
4471     elif check_header winsock2.h ; then
4472         check_func_headers winsock2.h closesocket -lws2 &&
4473             network_extralibs="-lws2" ||
4474         { check_func_headers winsock2.h closesocket -lws2_32 &&
4475             network_extralibs="-lws2_32"; } || disable winsock2_h network
4476         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4477
4478         check_type ws2tcpip.h socklen_t
4479         check_type ws2tcpip.h "struct addrinfo"
4480         check_type ws2tcpip.h "struct group_source_req"
4481         check_type ws2tcpip.h "struct ip_mreq_source"
4482         check_type ws2tcpip.h "struct ipv6_mreq"
4483         check_type winsock2.h "struct pollfd"
4484         check_struct winsock2.h "struct sockaddr" sa_len
4485         check_type ws2tcpip.h "struct sockaddr_in6"
4486         check_type ws2tcpip.h "struct sockaddr_storage"
4487     else
4488         disable network
4489     fi
4490 fi
4491
4492 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4493 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4494 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4495 check_builtin sarestart signal.h "SA_RESTART"
4496 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4497
4498 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4499 check_func  ${malloc_prefix}memalign            && enable memalign
4500 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4501
4502 check_func  access
4503 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4504 check_func  fcntl
4505 check_func  fork
4506 check_func  gethrtime
4507 check_func  getopt
4508 check_func  getrusage
4509 check_func  gettimeofday
4510 check_func  isatty
4511 check_func  localtime_r
4512 check_func  mach_absolute_time
4513 check_func  mkstemp
4514 check_func  mmap
4515 check_func  mprotect
4516 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4517 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4518 check_func  sched_getaffinity
4519 check_func  setrlimit
4520 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4521 check_func  strerror_r
4522 check_func  sysconf
4523 check_func  sysctl
4524 check_func  usleep
4525
4526 check_func_headers conio.h kbhit
4527 check_func_headers io.h setmode
4528 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4529 check_func_headers stdlib.h getenv
4530
4531 check_func_headers windows.h CoTaskMemFree -lole32
4532 check_func_headers windows.h GetProcessAffinityMask
4533 check_func_headers windows.h GetProcessTimes
4534 check_func_headers windows.h GetSystemTimeAsFileTime
4535 check_func_headers windows.h MapViewOfFile
4536 check_func_headers windows.h PeekNamedPipe
4537 check_func_headers windows.h SetConsoleTextAttribute
4538 check_func_headers windows.h Sleep
4539 check_func_headers windows.h VirtualAlloc
4540 check_func_headers glob.h glob
4541 enabled xlib &&
4542     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4543
4544 check_header cl/cl.h
4545 check_header direct.h
4546 check_header dlfcn.h
4547 check_header dxva.h
4548 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4549 check_header io.h
4550 check_header libcrystalhd/libcrystalhd_if.h
4551 check_header mach/mach_time.h
4552 check_header malloc.h
4553 check_header poll.h
4554 check_header sys/mman.h
4555 check_header sys/param.h
4556 check_header sys/resource.h
4557 check_header sys/select.h
4558 check_header sys/time.h
4559 check_header sys/un.h
4560 check_header termios.h
4561 check_header unistd.h
4562 check_header vdpau/vdpau.h
4563 check_header vdpau/vdpau_x11.h
4564 check_header VideoDecodeAcceleration/VDADecoder.h
4565 check_header windows.h
4566 check_header X11/extensions/XvMClib.h
4567 check_header asm/types.h
4568
4569 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4570 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4571 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4572
4573 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4574
4575 if ! disabled w32threads && ! enabled pthreads; then
4576     check_func_headers "windows.h process.h" _beginthreadex &&
4577         enable w32threads || disable w32threads
4578 fi
4579
4580 # check for some common methods of building with pthread support
4581 # do this before the optional library checks as some of them require pthreads
4582 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4583     enable pthreads
4584     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4585         add_cflags -pthread
4586         add_extralibs -pthread
4587     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4588         add_cflags -pthreads
4589         add_extralibs -pthreads
4590     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4591         add_extralibs -lpthreadGC2
4592     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4593         :
4594     elif ! check_func pthread_join && ! check_func pthread_create; then
4595         disable pthreads
4596     fi
4597     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4598 fi
4599
4600
4601 if enabled pthreads; then
4602   check_func pthread_cancel
4603 fi
4604
4605 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4606 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4607
4608 check_lib math.h sin -lm && LIBM="-lm"
4609 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4610
4611 atan2f_args=2
4612 ldexpf_args=2
4613 powf_args=2
4614
4615 for func in $MATH_FUNCS; do
4616     eval check_mathfunc $func \${${func}_args:-1}
4617 done
4618
4619 # these are off by default, so fail if requested and not available
4620 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4621 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4622                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4623                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4624 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4625 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4626 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4627 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4628 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4629 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4630 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4631 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4632 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4633 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4634                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4635                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4636 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4637 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4638 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4639 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"
4640 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4641 enabled fontconfig        && enable libfontconfig
4642 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4643 enabled libfreetype       && require_libfreetype
4644 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4645 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4646                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4647                                done || die "ERROR: libgsm not found"; }
4648 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4649 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4650 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4651 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4652 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4653 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4654 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4655 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4656                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4657                                die "ERROR: libopenjpeg not found"; }
4658 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4659 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4660 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4661 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4662 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4663 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4664 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4665 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4666 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4667 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4668     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4669     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4670 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4671 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4672                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4673                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4674 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4675 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4676 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4677 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4678 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4679 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4680 enabled libvpx            && {
4681     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4682                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4683     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 ||
4684                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4685     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4686     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; } }
4687 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4688 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4689 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4690                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4691                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4692 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4693                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4694                                die "ERROR: libx265 version must be >= 13."; }
4695 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4696 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4697 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4698 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4699 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4700                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4701                                die "ERROR: openal not found"; } &&
4702                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4703                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4704 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4705                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4706                                die "ERROR: opencl not found"; } &&
4707                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4708                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4709                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4710 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4711                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4712                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4713                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4714                                die "ERROR: opengl not found."
4715                              }
4716 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4717                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4718                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4719                                die "ERROR: openssl not found"; }
4720 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4721
4722 if enabled gnutls; then
4723     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4724     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4725 fi
4726
4727 # libdc1394 check
4728 if enabled libdc1394; then
4729     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4730         enable libdc1394_2; } ||
4731     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4732         enable libdc1394_1; } ||
4733     die "ERROR: No version of libdc1394 found "
4734 fi
4735
4736 SDL_CONFIG="${cross_prefix}sdl-config"
4737 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4738     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4739     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4740     enable sdl
4741 else
4742   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4743     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4744     sdl_libs=$("${SDL_CONFIG}" --libs)
4745     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4746     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4747     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4748     enable sdl
4749   fi
4750 fi
4751 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4752
4753 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4754 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4755 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4756 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4757 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4758
4759 check_header linux/fb.h
4760 check_header linux/videodev.h
4761 check_header linux/videodev2.h
4762 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4763
4764 check_header sys/videoio.h
4765
4766 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4767 # che