Merge commit '463a7cde563fd805864c48a76dd1b03fc24671ed'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92
93 Licensing options:
94   --enable-gpl             allow use of GPL code, the resulting libs
95                            and binaries will be under GPL [no]
96   --enable-version3        upgrade (L)GPL to version 3 [no]
97   --enable-nonfree         allow use of nonfree code, the resulting libs
98                            and binaries will be unredistributable [no]
99
100 Configuration options:
101   --disable-static         do not build static libraries [no]
102   --enable-shared          build shared libraries [no]
103   --enable-small           optimize for size instead of speed
104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
105   --enable-gray            enable full grayscale support (slower color)
106   --disable-swscale-alpha  disable alpha channel support in swscale
107   --disable-all            disable building components, libraries and programs
108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
109   --enable-raise-major     increase major version numbers in sonames [no]
110
111 Program options:
112   --disable-programs       do not build command line programs
113   --disable-ffmpeg         disable ffmpeg build
114   --disable-ffplay         disable ffplay build
115   --disable-ffprobe        disable ffprobe build
116   --disable-ffserver       disable ffserver build
117
118 Documentation options:
119   --disable-doc            do not build documentation
120   --disable-htmlpages      do not build HTML documentation pages
121   --disable-manpages       do not build man documentation pages
122   --disable-podpages       do not build POD documentation pages
123   --disable-txtpages       do not build text documentation pages
124
125 Component options:
126   --disable-avdevice       disable libavdevice build
127   --disable-avcodec        disable libavcodec build
128   --disable-avformat       disable libavformat build
129   --disable-avutil         disable libavutil build
130   --disable-swresample     disable libswresample build
131   --disable-swscale        disable libswscale build
132   --disable-postproc       disable libpostproc build
133   --disable-avfilter       disable libavfilter build
134   --enable-avresample      enable libavresample build [no]
135   --disable-pthreads       disable pthreads [auto]
136   --disable-w32threads     disable Win32 threads [auto]
137   --disable-os2threads     disable OS/2 threads [auto]
138   --disable-network        disable network support [no]
139   --disable-dct            disable DCT code
140   --disable-dwt            disable DWT code
141   --disable-error-resilience disable error resilience code
142   --disable-lsp            disable LSP code
143   --disable-lzo            disable LZO decoder code
144   --disable-mdct           disable MDCT code
145   --disable-rdft           disable RDFT code
146   --disable-fft            disable FFT code
147
148 Hardware accelerators:
149   --disable-dxva2          disable DXVA2 code [autodetect]
150   --disable-vaapi          disable VAAPI code [autodetect]
151   --disable-vda            disable VDA code [autodetect]
152   --disable-vdpau          disable VDPAU code [autodetect]
153
154 Individual component options:
155   --disable-everything     disable all components listed below
156   --disable-encoder=NAME   disable encoder NAME
157   --enable-encoder=NAME    enable encoder NAME
158   --disable-encoders       disable all encoders
159   --disable-decoder=NAME   disable decoder NAME
160   --enable-decoder=NAME    enable decoder NAME
161   --disable-decoders       disable all decoders
162   --disable-hwaccel=NAME   disable hwaccel NAME
163   --enable-hwaccel=NAME    enable hwaccel NAME
164   --disable-hwaccels       disable all hwaccels
165   --disable-muxer=NAME     disable muxer NAME
166   --enable-muxer=NAME      enable muxer NAME
167   --disable-muxers         disable all muxers
168   --disable-demuxer=NAME   disable demuxer NAME
169   --enable-demuxer=NAME    enable demuxer NAME
170   --disable-demuxers       disable all demuxers
171   --enable-parser=NAME     enable parser NAME
172   --disable-parser=NAME    disable parser NAME
173   --disable-parsers        disable all parsers
174   --enable-bsf=NAME        enable bitstream filter NAME
175   --disable-bsf=NAME       disable bitstream filter NAME
176   --disable-bsfs           disable all bitstream filters
177   --enable-protocol=NAME   enable protocol NAME
178   --disable-protocol=NAME  disable protocol NAME
179   --disable-protocols      disable all protocols
180   --enable-indev=NAME      enable input device NAME
181   --disable-indev=NAME     disable input device NAME
182   --disable-indevs         disable input devices
183   --enable-outdev=NAME     enable output device NAME
184   --disable-outdev=NAME    disable output device NAME
185   --disable-outdevs        disable output devices
186   --disable-devices        disable all devices
187   --enable-filter=NAME     enable filter NAME
188   --disable-filter=NAME    disable filter NAME
189   --disable-filters        disable all filters
190
191 External library support:
192   --enable-avisynth        enable reading of AviSynth script files [no]
193   --disable-bzlib          disable bzlib [autodetect]
194   --enable-fontconfig      enable fontconfig
195   --enable-frei0r          enable frei0r video filtering
196   --enable-gnutls          enable gnutls [no]
197   --disable-iconv          disable iconv [autodetect]
198   --enable-ladspa          enable LADSPA audio filtering
199   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
200   --enable-libass          enable libass subtitles rendering [no]
201   --enable-libbluray       enable BluRay reading using libbluray [no]
202   --enable-libbs2b         enable bs2b DSP library [no]
203   --enable-libcaca         enable textual display using libcaca
204   --enable-libcelt         enable CELT decoding via libcelt [no]
205   --enable-libcdio         enable audio CD grabbing with libcdio
206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
207                            and libraw1394 [no]
208   --enable-libfaac         enable AAC encoding via libfaac [no]
209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
211   --enable-libfreetype     enable libfreetype [no]
212   --enable-libgme          enable Game Music Emu via libgme [no]
213   --enable-libgsm          enable GSM de/encoding via libgsm [no]
214   --enable-libiec61883     enable iec61883 via libiec61883 [no]
215   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
216   --enable-libmodplug      enable ModPlug via libmodplug [no]
217   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
218   --enable-libnut          enable NUT (de)muxing via libnut,
219                            native (de)muxer exists [no]
220   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
221   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
222   --enable-libopencv       enable video filtering via libopencv [no]
223   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
224   --enable-libopus         enable Opus de/encoding via libopus [no]
225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
226   --enable-libquvi         enable quvi input via libquvi [no]
227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
230   --enable-libsoxr         enable Include libsoxr resampling [no]
231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
232   --enable-libssh          enable SFTP protocol via libssh [no]
233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
234   --enable-libtheora       enable Theora encoding via libtheora [no]
235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
238   --enable-libvidstab      enable video stabilization using vid.stab [no]
239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
242                            native implementation exists [no]
243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
245   --enable-libwebp         enable WebP encoding via libwebp [no]
246   --enable-libx264         enable H.264 encoding via x264 [no]
247   --enable-libx265         enable HEVC encoding via x265 [no]
248   --enable-libxavs         enable AVS encoding via xavs [no]
249   --enable-libxvid         enable Xvid encoding via xvidcore,
250                            native MPEG-4/Xvid encoder exists [no]
251   --enable-libzmq          enable message passing via libzmq [no]
252   --enable-libzvbi         enable teletext support via libzvbi [no]
253   --enable-decklink        enable Blackmagick DeckLink output [no]
254   --enable-openal          enable OpenAL 1.1 capture support [no]
255   --enable-opencl          enable OpenCL code
256   --enable-opengl          enable OpenGL rendering [no]
257   --enable-openssl         enable openssl [no]
258   --enable-x11grab         enable X11 grabbing [no]
259   --disable-xlib           disable xlib [autodetect]
260   --disable-zlib           disable zlib [autodetect]
261
262 Toolchain options:
263   --arch=ARCH              select architecture [$arch]
264   --cpu=CPU                select the minimum required CPU (affects
265                            instruction selection, may crash on older CPUs)
266   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
267   --progs-suffix=SUFFIX    program name suffix []
268   --enable-cross-compile   assume a cross-compiler is used
269   --sysroot=PATH           root of cross-build tree
270   --sysinclude=PATH        location of cross-build system headers
271   --target-os=OS           compiler targets OS [$target_os]
272   --target-exec=CMD        command to run executables on target
273   --target-path=DIR        path to view of build directory on target
274   --target-samples=DIR     path to samples directory on target
275   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
276   --toolchain=NAME         set tool defaults according to NAME
277   --nm=NM                  use nm tool NM [$nm_default]
278   --ar=AR                  use archive tool AR [$ar_default]
279   --as=AS                  use assembler AS [$as_default]
280   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
281   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
282   --cc=CC                  use C compiler CC [$cc_default]
283   --cxx=CXX                use C compiler CXX [$cxx_default]
284   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
285   --ld=LD                  use linker LD [$ld_default]
286   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
287   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
288   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
289   --host-cc=HOSTCC         use host C compiler HOSTCC
290   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
291   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
292   --host-ld=HOSTLD         use host linker HOSTLD
293   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
294   --host-libs=HLIBS        use libs HLIBS when linking for host
295   --host-os=OS             compiler host OS [$target_os]
296   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
297   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
298   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
299   --extra-libs=ELIBS       add ELIBS [$ELIBS]
300   --extra-version=STRING   version string suffix []
301   --optflags=OPTFLAGS      override optimization-related compiler flags
302   --build-suffix=SUFFIX    library name suffix []
303   --enable-pic             build position-independent code
304   --enable-thumb           compile for Thumb instruction set
305   --enable-lto             use link-time optimization
306
307 Advanced options (experts only):
308   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
309   --disable-symver         disable symbol versioning
310   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
311   --disable-safe-bitstream-reader
312                            disable buffer boundary checking in bitreaders
313                            (faster, but may crash)
314   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
315   --enable-sram            allow use of on-chip SRAM
316   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
317
318 Optimization options (experts only):
319   --disable-asm            disable all assembly 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 assembly
342   --disable-yasm           disable use of nasm/yasm assembly
343   --disable-mips32r2       disable MIPS32R2 optimizations
344   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
345   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
346   --disable-mipsfpu        disable floating point MIPS optimizations
347   --disable-fast-unaligned consider unaligned accesses slow
348
349 Developer options (useful when working on FFmpeg itself):
350   --disable-debug          disable debugging symbols
351   --enable-debug=LEVEL     set the debug level [$debuglevel]
352   --disable-optimizations  disable compiler optimizations
353   --enable-extra-warnings  enable more compiler warnings
354   --disable-stripping      disable stripping of executables and shared libraries
355   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
356                            2 causes a slowdown at runtime.
357   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
358   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
359                            leaks and errors, using the specified valgrind binary.
360                            Cannot be combined with --target-exec
361   --enable-ftrapv          Trap arithmetic overflows
362   --samples=PATH           location of test samples for FATE, if not set use
363                            \$FATE_SAMPLES at make invocation time.
364   --enable-neon-clobber-test check NEON registers for clobbering (should be
365                            used only for debugging purposes)
366   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
367                            should be used only for debugging purposes)
368   --enable-random          randomly enable/disable components
369   --disable-random
370   --enable-random=LIST     randomly enable/disable specific components or
371   --disable-random=LIST    component groups. LIST is a comma-separated list
372                            of NAME[:PROB] entries where NAME is a component
373                            (group) and PROB the probability associated with
374                            NAME (default 0.5).
375   --random-seed=VALUE      seed value for --enable/disable-random
376
377 NOTE: Object files are built at the place where configure is launched.
378 EOF
379   exit 0
380 }
381
382 quotes='""'
383
384 log(){
385     echo "$@" >> $logfile
386 }
387
388 log_file(){
389     log BEGIN $1
390     pr -n -t $1 >> $logfile
391     log END $1
392 }
393
394 echolog(){
395     log "$@"
396     echo "$@"
397 }
398
399 warn(){
400     log "WARNING: $*"
401     WARNINGS="${WARNINGS}WARNING: $*\n"
402 }
403
404 die(){
405     echolog "$@"
406     cat <<EOF
407
408 If you think configure made a mistake, make sure you are using the latest
409 version from Git.  If the latest version fails, report the problem to the
410 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
411 EOF
412     if disabled logging; then
413         cat <<EOF
414 Rerun configure with logging enabled (do not use --disable-logging), and
415 include the log this produces with your report.
416 EOF
417     else
418         cat <<EOF
419 Include the log file "$logfile" produced by configure as this will help
420 solve the problem.
421 EOF
422     fi
423     exit 1
424 }
425
426 # Avoid locale weirdness, besides we really just want to translate ASCII.
427 toupper(){
428     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
429 }
430
431 tolower(){
432     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
433 }
434
435 c_escape(){
436     echo "$*" | sed 's/["\\]/\\\0/g'
437 }
438
439 sh_quote(){
440     v=$(echo "$1" | sed "s/'/'\\\\''/g")
441     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
442     echo "$v"
443 }
444
445 cleanws(){
446     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
447 }
448
449 filter(){
450     pat=$1
451     shift
452     for v; do
453         eval "case $v in $pat) echo $v ;; esac"
454     done
455 }
456
457 filter_out(){
458     pat=$1
459     shift
460     for v; do
461         eval "case $v in $pat) ;; *) echo $v ;; esac"
462     done
463 }
464
465 map(){
466     m=$1
467     shift
468     for v; do eval $m; done
469 }
470
471 add_suffix(){
472     suffix=$1
473     shift
474     for v; do echo ${v}${suffix}; done
475 }
476
477 set_all(){
478     value=$1
479     shift
480     for var in $*; do
481         eval $var=$value
482     done
483 }
484
485 set_weak(){
486     value=$1
487     shift
488     for var; do
489         eval : \${$var:=$value}
490     done
491 }
492
493 sanitize_var_name(){
494     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
495 }
496
497 set_safe(){
498     var=$1
499     shift
500     eval $(sanitize_var_name "$var")='$*'
501 }
502
503 get_safe(){
504     eval echo \$$(sanitize_var_name "$1")
505 }
506
507 pushvar(){
508     for pvar in $*; do
509         eval level=\${${pvar}_level:=0}
510         eval ${pvar}_${level}="\$$pvar"
511         eval ${pvar}_level=$(($level+1))
512     done
513 }
514
515 popvar(){
516     for pvar in $*; do
517         eval level=\${${pvar}_level:-0}
518         test $level = 0 && continue
519         eval level=$(($level-1))
520         eval $pvar="\${${pvar}_${level}}"
521         eval ${pvar}_level=$level
522         eval unset ${pvar}_${level}
523     done
524 }
525
526 enable(){
527     set_all yes $*
528 }
529
530 disable(){
531     set_all no $*
532 }
533
534 enable_weak(){
535     set_weak yes $*
536 }
537
538 disable_weak(){
539     set_weak no $*
540 }
541
542 enable_safe(){
543     for var; do
544         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
545     done
546 }
547
548 disable_safe(){
549     for var; do
550         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
551     done
552 }
553
554 do_enable_deep(){
555     for var; do
556         enabled $var && continue
557         eval sel="\$${var}_select"
558         eval sgs="\$${var}_suggest"
559         pushvar var sgs
560         enable_deep $sel
561         popvar sgs
562         enable_deep_weak $sgs
563         popvar var
564     done
565 }
566
567 enable_deep(){
568     do_enable_deep $*
569     enable $*
570 }
571
572 enable_deep_weak(){
573     for var; do
574         disabled $var && continue
575         pushvar var
576         do_enable_deep $var
577         popvar var
578         enable_weak $var
579     done
580 }
581
582 enabled(){
583     test "${1#!}" = "$1" && op== || op=!=
584     eval test "x\$${1#!}" $op "xyes"
585 }
586
587 disabled(){
588     test "${1#!}" = "$1" && op== || op=!=
589     eval test "x\$${1#!}" $op "xno"
590 }
591
592 enabled_all(){
593     for opt; do
594         enabled $opt || return 1
595     done
596 }
597
598 disabled_all(){
599     for opt; do
600         disabled $opt || return 1
601     done
602 }
603
604 enabled_any(){
605     for opt; do
606         enabled $opt && return 0
607     done
608 }
609
610 disabled_any(){
611     for opt; do
612         disabled $opt && return 0
613     done
614     return 1
615 }
616
617 set_default(){
618     for opt; do
619         eval : \${$opt:=\$${opt}_default}
620     done
621 }
622
623 is_in(){
624     value=$1
625     shift
626     for var in $*; do
627         [ $var = $value ] && return 0
628     done
629     return 1
630 }
631
632 do_check_deps(){
633     for cfg; do
634         cfg="${cfg#!}"
635         enabled ${cfg}_checking && die "Circular dependency for $cfg."
636         disabled ${cfg}_checking && continue
637         enable ${cfg}_checking
638         append allopts $cfg
639
640         eval dep_all="\$${cfg}_deps"
641         eval dep_any="\$${cfg}_deps_any"
642         eval dep_sel="\$${cfg}_select"
643         eval dep_sgs="\$${cfg}_suggest"
644         eval dep_ifa="\$${cfg}_if"
645         eval dep_ifn="\$${cfg}_if_any"
646
647         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
648         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
649         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
650
651         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
652         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
653         enabled_all  $dep_all || disable $cfg
654         enabled_any  $dep_any || disable $cfg
655         disabled_any $dep_sel && disable $cfg
656
657         if enabled $cfg; then
658             enable_deep $dep_sel
659             enable_deep_weak $dep_sgs
660         fi
661
662         disable ${cfg}_checking
663     done
664 }
665
666 check_deps(){
667     unset allopts
668
669     do_check_deps "$@"
670
671     for cfg in $allopts; do
672         enabled $cfg || continue
673         eval dep_extralibs="\$${cfg}_extralibs"
674         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
675     done
676 }
677
678 print_config(){
679     pfx=$1
680     files=$2
681     shift 2
682     map 'eval echo "$v \${$v:-no}"' "$@" |
683     awk "BEGIN { split(\"$files\", files) }
684         {
685             c = \"$pfx\" toupper(\$1);
686             v = \$2;
687             sub(/yes/, 1, v);
688             sub(/no/,  0, v);
689             for (f in files) {
690                 file = files[f];
691                 if (file ~ /\\.h\$/) {
692                     printf(\"#define %s %d\\n\", c, v) >>file;
693                 } else if (file ~ /\\.asm\$/) {
694                     printf(\"%%define %s %d\\n\", c, v) >>file;
695                 } else if (file ~ /\\.mak\$/) {
696                     n = -v ? \"\" : \"!\";
697                     printf(\"%s%s=yes\\n\", n, c) >>file;
698                 } else if (file ~ /\\.texi\$/) {
699                     pre = -v ? \"\" : \"@c \";
700                     yesno = \$2;
701                     c2 = tolower(c);
702                     gsub(/_/, \"-\", c2);
703                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
704                 }
705             }
706         }"
707 }
708
709 print_enabled(){
710     suf=$1
711     shift
712     for v; do
713         enabled $v && printf "%s\n" ${v%$suf};
714     done
715 }
716
717 append(){
718     var=$1
719     shift
720     eval "$var=\"\$$var $*\""
721 }
722
723 prepend(){
724     var=$1
725     shift
726     eval "$var=\"$* \$$var\""
727 }
728
729 unique(){
730     var=$1
731     uniq_list=""
732     for tok in $(eval echo \$$var); do
733         uniq_list="$(filter_out $tok $uniq_list) $tok"
734     done
735     eval "$var=\"${uniq_list}\""
736 }
737
738 add_cppflags(){
739     append CPPFLAGS "$@"
740 }
741
742 add_cflags(){
743     append CFLAGS $($cflags_filter "$@")
744 }
745
746 add_cxxflags(){
747     append CXXFLAGS $($cflags_filter "$@")
748 }
749
750 add_asflags(){
751     append ASFLAGS $($asflags_filter "$@")
752 }
753
754 add_ldflags(){
755     append LDFLAGS $($ldflags_filter "$@")
756 }
757
758 add_stripflags(){
759     append ASMSTRIPFLAGS "$@"
760 }
761
762 add_extralibs(){
763     prepend extralibs $($ldflags_filter "$@")
764 }
765
766 add_host_cppflags(){
767     append host_cppflags "$@"
768 }
769
770 add_host_cflags(){
771     append host_cflags $($host_cflags_filter "$@")
772 }
773
774 add_host_ldflags(){
775     append host_ldflags $($host_ldflags_filter "$@")
776 }
777
778 add_compat(){
779     append compat_objs $1
780     shift
781     map 'add_cppflags -D$v' "$@"
782 }
783
784 check_cmd(){
785     log "$@"
786     "$@" >> $logfile 2>&1
787 }
788
789 check_stat(){
790     log check_stat "$@"
791     stat "$1" >> $logfile 2>&1
792 }
793
794 cc_o(){
795     eval printf '%s\\n' $CC_O
796 }
797
798 cc_e(){
799     eval printf '%s\\n' $CC_E
800 }
801
802 check_cc(){
803     log check_cc "$@"
804     cat > $TMPC
805     log_file $TMPC
806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
807 }
808
809 check_cxx(){
810     log check_cxx "$@"
811     cat > $TMPCPP
812     log_file $TMPCPP
813     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
814 }
815
816 check_oc(){
817     log check_oc "$@"
818     cat > $TMPM
819     log_file $TMPM
820     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
821 }
822
823 check_cpp(){
824     log check_cpp "$@"
825     cat > $TMPC
826     log_file $TMPC
827     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
828 }
829
830 as_o(){
831     eval printf '%s\\n' $AS_O
832 }
833
834 check_as(){
835     log check_as "$@"
836     cat > $TMPS
837     log_file $TMPS
838     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
839 }
840
841 check_inline_asm(){
842     log check_inline_asm "$@"
843     name="$1"
844     code="$2"
845     shift 2
846     disable $name
847     check_cc "$@" <<EOF && enable $name
848 void foo(void){ __asm__ volatile($code); }
849 EOF
850 }
851
852 check_insn(){
853     log check_insn "$@"
854     check_inline_asm ${1}_inline "\"$2\""
855     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
856 }
857
858 check_yasm(){
859     log check_yasm "$@"
860     echo "$1" > $TMPS
861     log_file $TMPS
862     shift 1
863     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
864 }
865
866 ld_o(){
867     eval printf '%s\\n' $LD_O
868 }
869
870 check_ld(){
871     log check_ld "$@"
872     type=$1
873     shift 1
874     flags=$(filter_out '-l*|*.so' $@)
875     libs=$(filter '-l*|*.so' $@)
876     check_$type $($cflags_filter $flags) || return
877     flags=$($ldflags_filter $flags)
878     libs=$($ldflags_filter $libs)
879     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
880 }
881
882 print_include(){
883     hdr=$1
884     test "${hdr%.h}" = "${hdr}" &&
885         echo "#include $hdr"    ||
886         echo "#include <$hdr>"
887 }
888
889 check_code(){
890     log check_code "$@"
891     check=$1
892     headers=$2
893     code=$3
894     shift 3
895     {
896         for hdr in $headers; do
897             print_include $hdr
898         done
899         echo "int main(void) { $code; return 0; }"
900     } | check_$check "$@"
901 }
902
903 check_cppflags(){
904     log check_cppflags "$@"
905     check_cc "$@" <<EOF && append CPPFLAGS "$@"
906 int x;
907 EOF
908 }
909
910 test_cflags(){
911     log test_cflags "$@"
912     set -- $($cflags_filter "$@")
913     check_cc "$@" <<EOF
914 int x;
915 EOF
916 }
917
918 check_cflags(){
919     log check_cflags "$@"
920     test_cflags "$@" && add_cflags "$@"
921 }
922
923 check_cxxflags(){
924     log check_cxxflags "$@"
925     set -- $($cflags_filter "$@")
926     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
927 int x;
928 EOF
929 }
930
931 test_ldflags(){
932     log test_ldflags "$@"
933     check_ld "cc" "$@" <<EOF
934 int main(void){ return 0; }
935 EOF
936 }
937
938 check_ldflags(){
939     log check_ldflags "$@"
940     test_ldflags "$@" && add_ldflags "$@"
941 }
942
943 test_stripflags(){
944     log test_stripflags "$@"
945     # call check_cc to get a fresh TMPO
946     check_cc <<EOF
947 int main(void) { return 0; }
948 EOF
949     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
950 }
951
952 check_stripflags(){
953     log check_stripflags "$@"
954     test_stripflags "$@" && add_stripflags "$@"
955 }
956
957 check_header(){
958     log check_header "$@"
959     header=$1
960     shift
961     disable_safe $header
962     check_cpp "$@" <<EOF && enable_safe $header
963 #include <$header>
964 int x;
965 EOF
966 }
967
968 check_header_oc(){
969     log check_header_oc "$@"
970     rm -f -- "$TMPO"
971     header=$1
972     shift
973     disable_safe $header
974     {
975        echo "#include <$header>"
976        echo "int main(void) { return 0; }"
977     } | check_oc && check_stat "$TMPO" && enable_safe $headers
978 }
979
980 check_func(){
981     log check_func "$@"
982     func=$1
983     shift
984     disable $func
985     check_ld "cc" "$@" <<EOF && enable $func
986 extern int $func();
987 int main(void){ $func(); }
988 EOF
989 }
990
991 check_mathfunc(){
992     log check_mathfunc "$@"
993     func=$1
994     narg=$2
995     shift 2
996     test $narg = 2 && args="f, g" || args="f"
997     disable $func
998     check_ld "cc" "$@" <<EOF && enable $func
999 #include <math.h>
1000 float foo(float f, float g) { return $func($args); }
1001 int main(void){ return (int) foo; }
1002 EOF
1003 }
1004
1005 check_func_headers(){
1006     log check_func_headers "$@"
1007     headers=$1
1008     funcs=$2
1009     shift 2
1010     {
1011         for hdr in $headers; do
1012             print_include $hdr
1013         done
1014         for func in $funcs; do
1015             echo "long check_$func(void) { return (long) $func; }"
1016         done
1017         echo "int main(void) { return 0; }"
1018     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1019 }
1020
1021 check_class_headers_cpp(){
1022     log check_class_headers_cpp "$@"
1023     headers=$1
1024     classes=$2
1025     shift 2
1026     {
1027         for hdr in $headers; do
1028             echo "#include <$hdr>"
1029         done
1030         echo "int main(void) { "
1031         i=1
1032         for class in $classes; do
1033             echo "$class obj$i;"
1034             i=$(expr $i + 1)
1035         done
1036         echo "return 0; }"
1037     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1038 }
1039
1040 check_cpp_condition(){
1041     log check_cpp_condition "$@"
1042     header=$1
1043     condition=$2
1044     shift 2
1045     check_cpp "$@" <<EOF
1046 #include <$header>
1047 #if !($condition)
1048 #error "unsatisfied condition: $condition"
1049 #endif
1050 EOF
1051 }
1052
1053 check_lib(){
1054     log check_lib "$@"
1055     header="$1"
1056     func="$2"
1057     shift 2
1058     check_header $header && check_func $func "$@" && add_extralibs "$@"
1059 }
1060
1061 check_lib2(){
1062     log check_lib2 "$@"
1063     headers="$1"
1064     funcs="$2"
1065     shift 2
1066     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1067 }
1068
1069 check_lib_cpp(){
1070     log check_lib_cpp "$@"
1071     headers="$1"
1072     classes="$2"
1073     shift 2
1074     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1075 }
1076
1077 check_pkg_config(){
1078     log check_pkg_config "$@"
1079     pkgandversion="$1"
1080     pkg="${1%% *}"
1081     headers="$2"
1082     funcs="$3"
1083     shift 3
1084     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1085     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1086     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1087     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1088         set_safe ${pkg}_cflags $pkg_cflags   &&
1089         set_safe ${pkg}_libs   $pkg_libs
1090 }
1091
1092 check_exec(){
1093     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1094 }
1095
1096 check_exec_crash(){
1097     code=$(cat)
1098
1099     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1100     # are safe but may not be available everywhere.  Thus we use
1101     # raise(SIGTERM) instead.  The check is run in a subshell so we
1102     # can redirect the "Terminated" message from the shell.  SIGBUS
1103     # is not defined by standard C so it is used conditionally.
1104
1105     (check_exec "$@") >> $logfile 2>&1 <<EOF
1106 #include <signal.h>
1107 static void sighandler(int sig){
1108     raise(SIGTERM);
1109 }
1110 int foo(void){
1111     $code
1112 }
1113 int (*func_ptr)(void) = foo;
1114 int main(void){
1115     signal(SIGILL, sighandler);
1116     signal(SIGFPE, sighandler);
1117     signal(SIGSEGV, sighandler);
1118 #ifdef SIGBUS
1119     signal(SIGBUS, sighandler);
1120 #endif
1121     return func_ptr();
1122 }
1123 EOF
1124 }
1125
1126 check_type(){
1127     log check_type "$@"
1128     headers=$1
1129     type=$2
1130     shift 2
1131     disable_safe "$type"
1132     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1133 }
1134
1135 check_struct(){
1136     log check_struct "$@"
1137     headers=$1
1138     struct=$2
1139     member=$3
1140     shift 3
1141     disable_safe "${struct}_${member}"
1142     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1143         enable_safe "${struct}_${member}"
1144 }
1145
1146 check_builtin(){
1147     log check_builtin "$@"
1148     name=$1
1149     headers=$2
1150     builtin=$3
1151     shift 3
1152     disable "$name"
1153     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1154 }
1155
1156 check_compile_assert(){
1157     log check_compile_assert "$@"
1158     name=$1
1159     headers=$2
1160     condition=$3
1161     shift 3
1162     disable "$name"
1163     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1164 }
1165
1166 require(){
1167     name="$1"
1168     header="$2"
1169     func="$3"
1170     shift 3
1171     check_lib $header $func "$@" || die "ERROR: $name not found"
1172 }
1173
1174 require2(){
1175     name="$1"
1176     headers="$2"
1177     func="$3"
1178     shift 3
1179     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1180 }
1181
1182 require_cpp(){
1183     name="$1"
1184     headers="$2"
1185     classes="$3"
1186     shift 3
1187     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require_pkg_config(){
1191     pkg="$1"
1192     check_pkg_config "$@" || die "ERROR: $pkg not found"
1193     add_cflags    $(get_safe ${pkg}_cflags)
1194     add_extralibs $(get_safe ${pkg}_libs)
1195 }
1196
1197 require_libfreetype(){
1198     log require_libfreetype "$@"
1199     pkg="freetype2"
1200     check_cmd $pkg_config --exists --print-errors $pkg \
1201       || die "ERROR: $pkg not found"
1202     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1203     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1204     {
1205         echo "#include <ft2build.h>"
1206         echo "#include FT_FREETYPE_H"
1207         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1208         echo "int main(void) { return 0; }"
1209     } | check_ld "cc" $pkg_cflags $pkg_libs \
1210       && set_safe ${pkg}_cflags $pkg_cflags \
1211       && set_safe ${pkg}_libs   $pkg_libs \
1212       || die "ERROR: $pkg not found"
1213     add_cflags    $(get_safe ${pkg}_cflags)
1214     add_extralibs $(get_safe ${pkg}_libs)
1215 }
1216
1217 hostcc_e(){
1218     eval printf '%s\\n' $HOSTCC_E
1219 }
1220
1221 hostcc_o(){
1222     eval printf '%s\\n' $HOSTCC_O
1223 }
1224
1225 check_host_cc(){
1226     log check_host_cc "$@"
1227     cat > $TMPC
1228     log_file $TMPC
1229     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1230 }
1231
1232 check_host_cpp(){
1233     log check_host_cpp "$@"
1234     cat > $TMPC
1235     log_file $TMPC
1236     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1237 }
1238
1239 check_host_cppflags(){
1240     log check_host_cppflags "$@"
1241     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1242 int x;
1243 EOF
1244 }
1245
1246 check_host_cflags(){
1247     log check_host_cflags "$@"
1248     set -- $($host_cflags_filter "$@")
1249     check_host_cc "$@" <<EOF && append host_cflags "$@"
1250 int x;
1251 EOF
1252 }
1253
1254 check_host_cpp_condition(){
1255     log check_host_cpp_condition "$@"
1256     header=$1
1257     condition=$2
1258     shift 2
1259     check_host_cpp "$@" <<EOF
1260 #include <$header>
1261 #if !($condition)
1262 #error "unsatisfied condition: $condition"
1263 #endif
1264 EOF
1265 }
1266
1267 apply(){
1268     file=$1
1269     shift
1270     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1271 }
1272
1273 cp_if_changed(){
1274     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1275     mkdir -p "$(dirname $2)"
1276     $cp_f "$1" "$2"
1277 }
1278
1279 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1280 # system-dependent things.
1281
1282 COMPONENT_LIST="
1283     bsfs
1284     decoders
1285     demuxers
1286     encoders
1287     filters
1288     hwaccels
1289     indevs
1290     muxers
1291     outdevs
1292     parsers
1293     protocols
1294 "
1295
1296 EXAMPLE_LIST="
1297     avio_reading_example
1298     decoding_encoding_example
1299     demuxing_decoding_example
1300     filter_audio_example
1301     filtering_audio_example
1302     filtering_video_example
1303     metadata_example
1304     muxing_example
1305     remuxing_example
1306     resampling_audio_example
1307     scaling_video_example
1308     transcode_aac_example
1309     transcoding_example
1310 "
1311
1312 EXTERNAL_LIBRARY_LIST="
1313     avisynth
1314     bzlib
1315     crystalhd
1316     decklink
1317     frei0r
1318     gnutls
1319     iconv
1320     ladspa
1321     libaacplus
1322     libass
1323     libbluray
1324     libbs2b
1325     libcaca
1326     libcdio
1327     libcelt
1328     libdc1394
1329     libfaac
1330     libfdk_aac
1331     libflite
1332     libfontconfig
1333     libfreetype
1334     libgme
1335     libgsm
1336     libiec61883
1337     libilbc
1338     libmodplug
1339     libmp3lame
1340     libnut
1341     libopencore_amrnb
1342     libopencore_amrwb
1343     libopencv
1344     libopenjpeg
1345     libopus
1346     libpulse
1347     libquvi
1348     librtmp
1349     libschroedinger
1350     libshine
1351     libsoxr
1352     libspeex
1353     libssh
1354     libstagefright_h264
1355     libtheora
1356     libtwolame
1357     libutvideo
1358     libv4l2
1359     libvidstab
1360     libvo_aacenc
1361     libvo_amrwbenc
1362     libvorbis
1363     libvpx
1364     libwavpack
1365     libwebp
1366     libx264
1367     libx265
1368     libxavs
1369     libxvid
1370     libzmq
1371     libzvbi
1372     openal
1373     opencl
1374     opengl
1375     openssl
1376     x11grab
1377     xlib
1378     zlib
1379 "
1380
1381 DOCUMENT_LIST="
1382     doc
1383     htmlpages
1384     manpages
1385     podpages
1386     txtpages
1387 "
1388
1389 FEATURE_LIST="
1390     ftrapv
1391     gray
1392     hardcoded_tables
1393     runtime_cpudetect
1394     safe_bitstream_reader
1395     shared
1396     small
1397     sram
1398     static
1399     swscale_alpha
1400 "
1401
1402 HWACCEL_LIST="
1403     dxva2
1404     vaapi
1405     vda
1406     vdpau
1407     xvmc
1408 "
1409
1410 LIBRARY_LIST="
1411     avcodec
1412     avdevice
1413     avfilter
1414     avformat
1415     avresample
1416     avutil
1417     postproc
1418     swresample
1419     swscale
1420 "
1421
1422 LICENSE_LIST="
1423     gpl
1424     nonfree
1425     version3
1426 "
1427
1428 PROGRAM_LIST="
1429     ffplay
1430     ffprobe
1431     ffserver
1432     ffmpeg
1433 "
1434
1435 SUBSYSTEM_LIST="
1436     dct
1437     dwt
1438     error_resilience
1439     fast_unaligned
1440     fft
1441     lsp
1442     lzo
1443     mdct
1444     network
1445     rdft
1446 "
1447
1448 CONFIG_LIST="
1449     $COMPONENT_LIST
1450     $DOCUMENT_LIST
1451     $EXAMPLE_LIST
1452     $EXTERNAL_LIBRARY_LIST
1453     $FEATURE_LIST
1454     $HWACCEL_LIST
1455     $LICENSE_LIST
1456     $LIBRARY_LIST
1457     $PROGRAM_LIST
1458     $SUBSYSTEM_LIST
1459     fontconfig
1460     incompatible_libav_abi
1461     memalign_hack
1462     memory_poisoning
1463     neon_clobber_test
1464     pic
1465     pod2man
1466     raise_major
1467     thumb
1468     xmm_clobber_test
1469 "
1470
1471 THREADS_LIST="
1472     pthreads
1473     os2threads
1474     w32threads
1475 "
1476
1477 ATOMICS_LIST="
1478     atomics_gcc
1479     atomics_suncc
1480     atomics_win32
1481 "
1482
1483 ARCH_LIST="
1484     aarch64
1485     alpha
1486     arm
1487     avr32
1488     avr32_ap
1489     avr32_uc
1490     bfin
1491     ia64
1492     m68k
1493     mips
1494     mips64
1495     parisc
1496     ppc
1497     ppc64
1498     s390
1499     sh4
1500     sparc
1501     sparc64
1502     tilegx
1503     tilepro
1504     tomi
1505     x86
1506     x86_32
1507     x86_64
1508 "
1509
1510 ARCH_EXT_LIST_ARM="
1511     armv5te
1512     armv6
1513     armv6t2
1514     armv8
1515     neon
1516     vfp
1517     vfpv3
1518 "
1519
1520 ARCH_EXT_LIST_MIPS="
1521     mipsfpu
1522     mips32r2
1523     mipsdspr1
1524     mipsdspr2
1525 "
1526
1527 ARCH_EXT_LIST_X86_SIMD="
1528     amd3dnow
1529     amd3dnowext
1530     avx
1531     avx2
1532     fma3
1533     fma4
1534     mmx
1535     mmxext
1536     sse
1537     sse2
1538     sse3
1539     sse4
1540     sse42
1541     ssse3
1542     xop
1543 "
1544
1545 ARCH_EXT_LIST_PPC="
1546     altivec
1547     dcbzl
1548     ldbrx
1549     ppc4xx
1550     vsx
1551 "
1552
1553 ARCH_EXT_LIST_X86="
1554     $ARCH_EXT_LIST_X86_SIMD
1555     cpunop
1556     i686
1557 "
1558
1559 ARCH_EXT_LIST="
1560     $ARCH_EXT_LIST_ARM
1561     $ARCH_EXT_LIST_PPC
1562     $ARCH_EXT_LIST_X86
1563     $ARCH_EXT_LIST_MIPS
1564     loongson
1565 "
1566
1567 ARCH_FEATURES="
1568     aligned_stack
1569     fast_64bit
1570     fast_clz
1571     fast_cmov
1572     local_aligned_8
1573     local_aligned_16
1574     local_aligned_32
1575 "
1576
1577 BUILTIN_LIST="
1578     atomic_cas_ptr
1579     machine_rw_barrier
1580     MemoryBarrier
1581     mm_empty
1582     rdtsc
1583     sarestart
1584     sync_val_compare_and_swap
1585 "
1586 HAVE_LIST_CMDLINE="
1587     inline_asm
1588     symver
1589     yasm
1590 "
1591
1592 HAVE_LIST_PUB="
1593     bigendian
1594     fast_unaligned
1595     incompatible_libav_abi
1596 "
1597
1598 HEADERS_LIST="
1599     alsa_asoundlib_h
1600     altivec_h
1601     arpa_inet_h
1602     asm_types_h
1603     cdio_paranoia_h
1604     cdio_paranoia_paranoia_h
1605     CL_cl_h
1606     dev_bktr_ioctl_bt848_h
1607     dev_bktr_ioctl_meteor_h
1608     dev_ic_bt8xx_h
1609     dev_video_bktr_ioctl_bt848_h
1610     dev_video_meteor_ioctl_meteor_h
1611     direct_h
1612     dlfcn_h
1613     dxva_h
1614     ES2_gl_h
1615     gsm_h
1616     io_h
1617     mach_mach_time_h
1618     machine_ioctl_bt848_h
1619     machine_ioctl_meteor_h
1620     malloc_h
1621     openjpeg_1_5_openjpeg_h
1622     OpenGL_gl3_h
1623     poll_h
1624     sndio_h
1625     soundcard_h
1626     sys_mman_h
1627     sys_param_h
1628     sys_resource_h
1629     sys_select_h
1630     sys_soundcard_h
1631     sys_time_h
1632     sys_un_h
1633     sys_videoio_h
1634     termios_h
1635     unistd_h
1636     windows_h
1637     winsock2_h
1638 "
1639
1640 MATH_FUNCS="
1641     atanf
1642     atan2f
1643     cbrt
1644     cbrtf
1645     cosf
1646     exp2
1647     exp2f
1648     expf
1649     fminf
1650     isinf
1651     isnan
1652     ldexpf
1653     llrint
1654     llrintf
1655     log2
1656     log2f
1657     log10f
1658     lrint
1659     lrintf
1660     powf
1661     rint
1662     round
1663     roundf
1664     sinf
1665     trunc
1666     truncf
1667 "
1668
1669 SYSTEM_FUNCS="
1670     access
1671     aligned_malloc
1672     clock_gettime
1673     closesocket
1674     CommandLineToArgvW
1675     CoTaskMemFree
1676     CryptGenRandom
1677     dlopen
1678     fcntl
1679     flt_lim
1680     fork
1681     getaddrinfo
1682     gethrtime
1683     getopt
1684     GetProcessAffinityMask
1685     GetProcessMemoryInfo
1686     GetProcessTimes
1687     getrusage
1688     getservbyport
1689     GetSystemTimeAsFileTime
1690     gettimeofday
1691     glob
1692     glXGetProcAddress
1693     inet_aton
1694     isatty
1695     jack_port_get_latency_range
1696     kbhit
1697     localtime_r
1698     lzo1x_999_compress
1699     mach_absolute_time
1700     MapViewOfFile
1701     memalign
1702     mkstemp
1703     mmap
1704     mprotect
1705     nanosleep
1706     PeekNamedPipe
1707     posix_memalign
1708     pthread_cancel
1709     sched_getaffinity
1710     SetConsoleTextAttribute
1711     setmode
1712     setrlimit
1713     Sleep
1714     strerror_r
1715     sysconf
1716     sysctl
1717     usleep
1718     VirtualAlloc
1719     wglGetProcAddress
1720 "
1721
1722 TOOLCHAIN_FEATURES="
1723     as_dn_directive
1724     as_func
1725     asm_mod_q
1726     attribute_may_alias
1727     attribute_packed
1728     ebp_available
1729     ebx_available
1730     gnu_as
1731     gnu_windres
1732     ibm_asm
1733     inline_asm_labels
1734     inline_asm_nonlocal_labels
1735     inline_asm_direct_symbol_refs
1736     pragma_deprecated
1737     rsync_contimeout
1738     symver_asm_label
1739     symver_gnu_asm
1740     vfp_args
1741     xform_asm
1742     xmm_clobbers
1743 "
1744
1745 TYPES_LIST="
1746     socklen_t
1747     struct_addrinfo
1748     struct_group_source_req
1749     struct_ip_mreq_source
1750     struct_ipv6_mreq
1751     struct_pollfd
1752     struct_rusage_ru_maxrss
1753     struct_sctp_event_subscribe
1754     struct_sockaddr_in6
1755     struct_sockaddr_sa_len
1756     struct_sockaddr_storage
1757     struct_stat_st_mtim_tv_nsec
1758     struct_v4l2_frmivalenum_discrete
1759 "
1760
1761 HAVE_LIST="
1762     $ARCH_EXT_LIST
1763     $(add_suffix _external $ARCH_EXT_LIST)
1764     $(add_suffix _inline   $ARCH_EXT_LIST)
1765     $ARCH_FEATURES
1766     $ATOMICS_LIST
1767     $BUILTIN_LIST
1768     $HAVE_LIST_CMDLINE
1769     $HAVE_LIST_PUB
1770     $HEADERS_LIST
1771     $MATH_FUNCS
1772     $SYSTEM_FUNCS
1773     $THREADS_LIST
1774     $TOOLCHAIN_FEATURES
1775     $TYPES_LIST
1776     atomics_native
1777     dos_paths
1778     dxva2api_cobj
1779     dxva2_lib
1780     libc_msvcrt
1781     libdc1394_1
1782     libdc1394_2
1783     makeinfo
1784     perl
1785     pod2man
1786     sdl
1787     texi2html
1788     threads
1789     vdpau_x11
1790     xlib
1791 "
1792
1793 # options emitted with CONFIG_ prefix but not available on the command line
1794 CONFIG_EXTRA="
1795     aandcttables
1796     ac3dsp
1797     audio_frame_queue
1798     audiodsp
1799     blockdsp
1800     cabac
1801     dsputil
1802     exif
1803     frame_thread_encoder
1804     gcrypt
1805     golomb
1806     gplv3
1807     h263dsp
1808     h264chroma
1809     h264dsp
1810     h264pred
1811     h264qpel
1812     hpeldsp
1813     huffman
1814     huffyuvdsp
1815     huffyuvencdsp
1816     intrax8
1817     lgplv3
1818     llauddsp
1819     llviddsp
1820     lpc
1821     mpegaudio
1822     mpegaudiodsp
1823     mpegvideo
1824     mpegvideoenc
1825     nettle
1826     qpeldsp
1827     rangecoder
1828     riffdec
1829     riffenc
1830     rtpdec
1831     rtpenc_chain
1832     sinewin
1833     tpeldsp
1834     videodsp
1835     vp3dsp
1836 "
1837
1838 CMDLINE_SELECT="
1839     $ARCH_EXT_LIST
1840     $CONFIG_LIST
1841     $HAVE_LIST_CMDLINE
1842     $THREADS_LIST
1843     asm
1844     cross_compile
1845     debug
1846     extra_warnings
1847     logging
1848     lto
1849     optimizations
1850     rpath
1851     stripping
1852 "
1853
1854 PATHS_LIST="
1855     bindir
1856     datadir
1857     docdir
1858     incdir
1859     libdir
1860     mandir
1861     prefix
1862     shlibdir
1863 "
1864
1865 CMDLINE_SET="
1866     $PATHS_LIST
1867     ar
1868     arch
1869     as
1870     assert_level
1871     build_suffix
1872     cc
1873     cpu
1874     cross_prefix
1875     cxx
1876     dep_cc
1877     extra_version
1878     gas
1879     host_cc
1880     host_cflags
1881     host_ld
1882     host_ldflags
1883     host_libs
1884     host_os
1885     install
1886     ld
1887     logfile
1888     malloc_prefix
1889     nm
1890     optflags
1891     pkg_config
1892     pkg_config_flags
1893     progs_suffix
1894     random_seed
1895     ranlib
1896     samples
1897     strip
1898     sws_max_filter_size
1899     sysinclude
1900     sysroot
1901     target_exec
1902     target_os
1903     target_path
1904     target_samples
1905     tempprefix
1906     toolchain
1907     valgrind
1908     yasmexe
1909 "
1910
1911 CMDLINE_APPEND="
1912     extra_cflags
1913     extra_cxxflags
1914     host_cppflags
1915 "
1916
1917 # code dependency declarations
1918
1919 # architecture extensions
1920
1921 armv5te_deps="arm"
1922 armv6_deps="arm"
1923 armv6t2_deps="arm"
1924 armv8_deps="aarch64"
1925 neon_deps_any="aarch64 arm"
1926 vfp_deps_any="aarch64 arm"
1927 vfpv3_deps="vfp"
1928
1929 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1930
1931 mipsfpu_deps="mips"
1932 mips32r2_deps="mips"
1933 mipsdspr1_deps="mips"
1934 mipsdspr2_deps="mips"
1935
1936 altivec_deps="ppc"
1937 ppc4xx_deps="ppc"
1938 vsx_deps="ppc"
1939
1940 cpunop_deps="i686"
1941 x86_64_select="i686"
1942 x86_64_suggest="fast_cmov"
1943
1944 amd3dnow_deps="mmx"
1945 amd3dnowext_deps="amd3dnow"
1946 i686_deps="x86"
1947 mmx_deps="x86"
1948 mmxext_deps="mmx"
1949 sse_deps="mmxext"
1950 sse2_deps="sse"
1951 sse3_deps="sse2"
1952 ssse3_deps="sse3"
1953 sse4_deps="ssse3"
1954 sse42_deps="sse4"
1955 avx_deps="sse42"
1956 xop_deps="avx"
1957 fma3_deps="avx"
1958 fma4_deps="avx"
1959 avx2_deps="avx"
1960
1961 mmx_external_deps="yasm"
1962 mmx_inline_deps="inline_asm"
1963 mmx_suggest="mmx_external mmx_inline"
1964
1965 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1966     eval dep=\$${ext}_deps
1967     eval ${ext}_external_deps='"${dep}_external"'
1968     eval ${ext}_inline_deps='"${dep}_inline"'
1969     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1970 done
1971
1972 aligned_stack_if_any="aarch64 ppc x86"
1973 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1974 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1975 fast_unaligned_if_any="aarch64 ppc x86"
1976
1977 need_memalign="altivec neon sse"
1978
1979 # system capabilities
1980
1981 symver_if_any="symver_asm_label symver_gnu_asm"
1982
1983 # threading support
1984 atomics_gcc_if="sync_val_compare_and_swap"
1985 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1986 atomics_win32_if="MemoryBarrier"
1987 atomics_native_if_any="$ATOMICS_LIST"
1988 w32threads_deps="atomics_native"
1989 threads_if_any="$THREADS_LIST"
1990
1991 # subsystems
1992 dct_select="rdft"
1993 error_resilience_select="dsputil"
1994 frame_thread_encoder_deps="encoders threads"
1995 intrax8_select="error_resilience"
1996 mdct_select="fft"
1997 rdft_select="fft"
1998 mpegaudio_select="mpegaudiodsp"
1999 mpegaudiodsp_select="dct"
2000 mpegvideo_select="blockdsp dsputil h264chroma hpeldsp videodsp"
2001 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
2002
2003 # decoders / encoders
2004 aac_decoder_select="mdct sinewin"
2005 aac_encoder_select="audio_frame_queue mdct sinewin"
2006 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2007 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
2008 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
2009 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
2010 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
2011 aic_decoder_select="dsputil golomb"
2012 alac_encoder_select="lpc"
2013 als_decoder_select="dsputil"
2014 amrnb_decoder_select="lsp"
2015 amrwb_decoder_select="lsp"
2016 amv_decoder_select="sp5x_decoder exif"
2017 amv_encoder_select="aandcttables"
2018 ape_decoder_select="dsputil llauddsp"
2019 asv1_decoder_select="blockdsp dsputil"
2020 asv1_encoder_select="dsputil"
2021 asv2_decoder_select="blockdsp dsputil"
2022 asv2_encoder_select="dsputil"
2023 atrac1_decoder_select="mdct sinewin"
2024 atrac3_decoder_select="mdct"
2025 atrac3p_decoder_select="mdct sinewin"
2026 avrn_decoder_select="exif"
2027 bink_decoder_select="blockdsp hpeldsp"
2028 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2029 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2030 cavs_decoder_select="blockdsp dsputil golomb h264chroma qpeldsp videodsp"
2031 cllc_decoder_select="dsputil"
2032 comfortnoise_encoder_select="lpc"
2033 cook_decoder_select="audiodsp mdct sinewin"
2034 cscd_decoder_select="lzo"
2035 cscd_decoder_suggest="zlib"
2036 dca_decoder_select="mdct"
2037 dirac_decoder_select="dsputil dwt golomb videodsp"
2038 dnxhd_decoder_select="blockdsp dsputil"
2039 dnxhd_encoder_select="aandcttables blockdsp dsputil mpegvideoenc"
2040 dvvideo_decoder_select="dsputil"
2041 dvvideo_encoder_select="dsputil"
2042 dxa_decoder_select="zlib"
2043 eac3_decoder_select="ac3_decoder"
2044 eac3_encoder_select="ac3_encoder"
2045 eamad_decoder_select="aandcttables blockdsp dsputil mpegvideo"
2046 eatgq_decoder_select="aandcttables"
2047 eatqi_decoder_select="aandcttables blockdsp dsputil mpeg1video_decoder"
2048 exr_decoder_select="zlib"
2049 ffv1_decoder_select="golomb rangecoder"
2050 ffv1_encoder_select="rangecoder"
2051 ffvhuff_decoder_select="huffyuv_decoder"
2052 ffvhuff_encoder_select="huffyuv_encoder"
2053 fic_decoder_select="golomb"
2054 flac_decoder_select="golomb"
2055 flac_encoder_select="dsputil golomb lpc"
2056 flashsv_decoder_select="zlib"
2057 flashsv_encoder_select="zlib"
2058 flashsv2_encoder_select="zlib"
2059 flashsv2_decoder_select="zlib"
2060 flv_decoder_select="h263_decoder"
2061 flv_encoder_select="h263_encoder"
2062 fourxm_decoder_select="blockdsp dsputil"
2063 fraps_decoder_select="dsputil huffman"
2064 g2m_decoder_select="blockdsp dsputil zlib"
2065 g729_decoder_select="dsputil"
2066 h261_decoder_select="error_resilience mpegvideo"
2067 h261_encoder_select="aandcttables mpegvideoenc"
2068 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo qpeldsp"
2069 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2070 h263i_decoder_select="h263_decoder"
2071 h263p_encoder_select="h263_encoder"
2072 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2073 h264_decoder_suggest="error_resilience"
2074 hevc_decoder_select="cabac dsputil golomb videodsp"
2075 huffyuv_decoder_select="dsputil huffyuvdsp llviddsp"
2076 huffyuv_encoder_select="dsputil huffman huffyuvencdsp llviddsp"
2077 iac_decoder_select="imc_decoder"
2078 imc_decoder_select="dsputil fft mdct sinewin"
2079 indeo3_decoder_select="hpeldsp"
2080 interplay_video_decoder_select="hpeldsp"
2081 jpegls_decoder_select="golomb mjpeg_decoder"
2082 jpegls_encoder_select="golomb"
2083 jv_decoder_select="blockdsp"
2084 lagarith_decoder_select="huffyuvdsp"
2085 ljpeg_encoder_select="aandcttables mpegvideoenc"
2086 loco_decoder_select="golomb"
2087 mdec_decoder_select="blockdsp dsputil mpegvideo"
2088 metasound_decoder_select="lsp mdct sinewin"
2089 mimic_decoder_select="blockdsp dsputil hpeldsp"
2090 mjpeg_decoder_select="blockdsp dsputil hpeldsp exif"
2091 mjpeg_encoder_select="aandcttables mpegvideoenc"
2092 mjpegb_decoder_select="mjpeg_decoder"
2093 mlp_decoder_select="mlp_parser"
2094 motionpixels_decoder_select="dsputil"
2095 mp1_decoder_select="mpegaudio"
2096 mp1float_decoder_select="mpegaudio"
2097 mp2_decoder_select="mpegaudio"
2098 mp2float_decoder_select="mpegaudio"
2099 mp3_decoder_select="mpegaudio"
2100 mp3adu_decoder_select="mpegaudio"
2101 mp3adufloat_decoder_select="mpegaudio"
2102 mp3float_decoder_select="mpegaudio"
2103 mp3on4_decoder_select="mpegaudio"
2104 mp3on4float_decoder_select="mpegaudio"
2105 mpc7_decoder_select="dsputil mpegaudiodsp"
2106 mpc8_decoder_select="mpegaudiodsp"
2107 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2108 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2109 mpeg1video_decoder_select="error_resilience mpegvideo"
2110 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2111 mpeg2video_decoder_select="error_resilience mpegvideo"
2112 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2113 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2114 mpeg4_encoder_select="h263_encoder"
2115 msmpeg4v1_decoder_select="h263_decoder"
2116 msmpeg4v2_decoder_select="h263_decoder"
2117 msmpeg4v2_encoder_select="h263_encoder"
2118 msmpeg4v3_decoder_select="h263_decoder"
2119 msmpeg4v3_encoder_select="h263_encoder"
2120 mss2_decoder_select="error_resilience qpeldsp vc1_decoder"
2121 mxpeg_decoder_select="mjpeg_decoder"
2122 nellymoser_decoder_select="mdct sinewin"
2123 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2124 nuv_decoder_select="dsputil lzo"
2125 on2avc_decoder_select="mdct"
2126 opus_decoder_deps="swresample"
2127 png_decoder_select="zlib"
2128 png_encoder_select="huffyuvencdsp zlib"
2129 prores_decoder_select="blockdsp dsputil"
2130 prores_encoder_select="dsputil"
2131 qcelp_decoder_select="lsp"
2132 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2133 ra_144_encoder_select="audio_frame_queue lpc"
2134 ralf_decoder_select="golomb"
2135 rawvideo_decoder_select="dsputil"
2136 rtjpeg_decoder_select="dsputil"
2137 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2138 rv10_encoder_select="h263_encoder"
2139 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2140 rv20_encoder_select="h263_encoder"
2141 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2142 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2143 shorten_decoder_select="golomb"
2144 sipr_decoder_select="lsp"
2145 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2146 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2147 sonic_decoder_select="golomb rangecoder"
2148 sonic_encoder_select="golomb rangecoder"
2149 sonic_ls_encoder_select="golomb rangecoder"
2150 sp5x_decoder_select="mjpeg_decoder"
2151 svq1_decoder_select="hpeldsp"
2152 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2153 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2154 svq3_decoder_suggest="zlib"
2155 tak_decoder_select="audiodsp"
2156 theora_decoder_select="vp3_decoder"
2157 thp_decoder_select="mjpeg_decoder"
2158 tiff_decoder_suggest="zlib"
2159 tiff_encoder_suggest="zlib"
2160 truehd_decoder_select="mlp_parser"
2161 truemotion2_decoder_select="dsputil"
2162 truespeech_decoder_select="dsputil"
2163 tscc_decoder_select="zlib"
2164 twinvq_decoder_select="mdct lsp sinewin"
2165 utvideo_decoder_select="dsputil"
2166 utvideo_encoder_select="dsputil huffman huffyuvencdsp"
2167 vble_decoder_select="huffyuvdsp"
2168 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 qpeldsp"
2169 vc1image_decoder_select="vc1_decoder"
2170 vorbis_decoder_select="mdct"
2171 vorbis_encoder_select="mdct"
2172 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2173 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2174 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2175 vp6a_decoder_select="vp6_decoder"
2176 vp6f_decoder_select="vp6_decoder"
2177 vp7_decoder_select="h264pred videodsp"
2178 vp8_decoder_select="h264pred videodsp"
2179 vp9_decoder_select="videodsp vp9_parser"
2180 webp_decoder_select="vp8_decoder"
2181 wmalossless_decoder_select="llauddsp"
2182 wmapro_decoder_select="mdct sinewin"
2183 wmav1_decoder_select="mdct sinewin"
2184 wmav1_encoder_select="mdct sinewin"
2185 wmav2_decoder_select="mdct sinewin"
2186 wmav2_encoder_select="mdct sinewin"
2187 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2188 wmv1_decoder_select="h263_decoder"
2189 wmv1_encoder_select="h263_encoder"
2190 wmv2_decoder_select="blockdsp h263_decoder intrax8 videodsp"
2191 wmv2_encoder_select="h263_encoder"
2192 wmv3_decoder_select="vc1_decoder"
2193 wmv3image_decoder_select="wmv3_decoder"
2194 zerocodec_decoder_select="zlib"
2195 zlib_decoder_select="zlib"
2196 zlib_encoder_select="zlib"
2197 zmbv_decoder_select="zlib"
2198 zmbv_encoder_select="zlib"
2199
2200 # hardware accelerators
2201 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2202 dxva2_deps="dxva2api_h"
2203 vaapi_deps="va_va_h"
2204 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2205 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2206 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2207 xvmc_deps="X11_extensions_XvMClib_h"
2208
2209 h263_vaapi_hwaccel_deps="vaapi"
2210 h263_vaapi_hwaccel_select="h263_decoder"
2211 h263_vdpau_hwaccel_deps="vdpau"
2212 h263_vdpau_hwaccel_select="h263_decoder"
2213 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2214 h264_dxva2_hwaccel_deps="dxva2"
2215 h264_dxva2_hwaccel_select="h264_decoder"
2216 h264_vaapi_hwaccel_deps="vaapi"
2217 h264_vaapi_hwaccel_select="h264_decoder"
2218 h264_vda_decoder_deps="vda"
2219 h264_vda_decoder_select="h264_decoder"
2220 h264_vda_hwaccel_deps="vda"
2221 h264_vda_hwaccel_select="h264_decoder"
2222 h264_vda_old_hwaccel_deps="vda"
2223 h264_vda_old_hwaccel_select="h264_decoder"
2224 h264_vdpau_decoder_deps="vdpau"
2225 h264_vdpau_decoder_select="h264_decoder"
2226 h264_vdpau_hwaccel_deps="vdpau"
2227 h264_vdpau_hwaccel_select="h264_decoder"
2228 mpeg_vdpau_decoder_deps="vdpau"
2229 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2230 mpeg_xvmc_hwaccel_deps="xvmc"
2231 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2232 mpeg1_vdpau_decoder_deps="vdpau"
2233 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2234 mpeg1_vdpau_hwaccel_deps="vdpau"
2235 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2236 mpeg1_xvmc_hwaccel_deps="xvmc"
2237 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2238 mpeg2_crystalhd_decoder_select="crystalhd"
2239 mpeg2_dxva2_hwaccel_deps="dxva2"
2240 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2241 mpeg2_vaapi_hwaccel_deps="vaapi"
2242 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2243 mpeg2_vdpau_hwaccel_deps="vdpau"
2244 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2245 mpeg2_xvmc_hwaccel_deps="xvmc"
2246 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2247 mpeg4_crystalhd_decoder_select="crystalhd"
2248 mpeg4_vaapi_hwaccel_deps="vaapi"
2249 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2250 mpeg4_vdpau_decoder_deps="vdpau"
2251 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2252 mpeg4_vdpau_hwaccel_deps="vdpau"
2253 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2254 msmpeg4_crystalhd_decoder_select="crystalhd"
2255 vc1_crystalhd_decoder_select="crystalhd"
2256 vc1_dxva2_hwaccel_deps="dxva2"
2257 vc1_dxva2_hwaccel_select="vc1_decoder"
2258 vc1_vaapi_hwaccel_deps="vaapi"
2259 vc1_vaapi_hwaccel_select="vc1_decoder"
2260 vc1_vdpau_decoder_deps="vdpau"
2261 vc1_vdpau_decoder_select="vc1_decoder"
2262 vc1_vdpau_hwaccel_deps="vdpau"
2263 vc1_vdpau_hwaccel_select="vc1_decoder"
2264 wmv3_crystalhd_decoder_select="crystalhd"
2265 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2266 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2267 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2268 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2269
2270 # parsers
2271 h264_parser_select="h264_decoder"
2272 hevc_parser_select="hevc_decoder"
2273 mpegvideo_parser_select="mpegvideo"
2274 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2275 vc1_parser_select="mpegvideo vc1_decoder"
2276
2277 # external libraries
2278 libaacplus_encoder_deps="libaacplus"
2279 libcelt_decoder_deps="libcelt"
2280 libfaac_encoder_deps="libfaac"
2281 libfaac_encoder_select="audio_frame_queue"
2282 libfdk_aac_decoder_deps="libfdk_aac"
2283 libfdk_aac_encoder_deps="libfdk_aac"
2284 libfdk_aac_encoder_select="audio_frame_queue"
2285 libgme_demuxer_deps="libgme"
2286 libgsm_decoder_deps="libgsm"
2287 libgsm_encoder_deps="libgsm"
2288 libgsm_ms_decoder_deps="libgsm"
2289 libgsm_ms_encoder_deps="libgsm"
2290 libilbc_decoder_deps="libilbc"
2291 libilbc_encoder_deps="libilbc"
2292 libmodplug_demuxer_deps="libmodplug"
2293 libmp3lame_encoder_deps="libmp3lame"
2294 libmp3lame_encoder_select="audio_frame_queue"
2295 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2296 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2297 libopencore_amrnb_encoder_select="audio_frame_queue"
2298 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2299 libopenjpeg_decoder_deps="libopenjpeg"
2300 libopenjpeg_encoder_deps="libopenjpeg"
2301 libopus_decoder_deps="libopus"
2302 libopus_encoder_deps="libopus"
2303 libopus_encoder_select="audio_frame_queue"
2304 libquvi_demuxer_deps="libquvi"
2305 libschroedinger_decoder_deps="libschroedinger"
2306 libschroedinger_encoder_deps="libschroedinger"
2307 libshine_encoder_deps="libshine"
2308 libshine_encoder_select="audio_frame_queue"
2309 libspeex_decoder_deps="libspeex"
2310 libspeex_encoder_deps="libspeex"
2311 libspeex_encoder_select="audio_frame_queue"
2312 libstagefright_h264_decoder_deps="libstagefright_h264"
2313 libtheora_encoder_deps="libtheora"
2314 libtwolame_encoder_deps="libtwolame"
2315 libvo_aacenc_encoder_deps="libvo_aacenc"
2316 libvo_aacenc_encoder_select="audio_frame_queue"
2317 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2318 libvorbis_decoder_deps="libvorbis"
2319 libvorbis_encoder_deps="libvorbis"
2320 libvorbis_encoder_select="audio_frame_queue"
2321 libvpx_vp8_decoder_deps="libvpx"
2322 libvpx_vp8_encoder_deps="libvpx"
2323 libvpx_vp9_decoder_deps="libvpx"
2324 libvpx_vp9_encoder_deps="libvpx"
2325 libwavpack_encoder_deps="libwavpack"
2326 libwebp_encoder_deps="libwebp"
2327 libx264_encoder_deps="libx264"
2328 libx264rgb_encoder_deps="libx264"
2329 libx265_encoder_deps="libx265"
2330 libxavs_encoder_deps="libxavs"
2331 libxvid_encoder_deps="libxvid"
2332 libutvideo_decoder_deps="libutvideo"
2333 libutvideo_encoder_deps="libutvideo"
2334 libzvbi_teletext_decoder_deps="libzvbi"
2335
2336 # demuxers / muxers
2337 ac3_demuxer_select="ac3_parser"
2338 asf_demuxer_select="riffdec"
2339 asf_muxer_select="riffenc"
2340 asf_stream_muxer_select="asf_muxer"
2341 avi_demuxer_select="riffdec exif"
2342 avi_muxer_select="riffenc"
2343 avisynth_demuxer_deps="avisynth"
2344 avisynth_demuxer_select="riffdec"
2345 caf_demuxer_select="riffdec"
2346 dirac_demuxer_select="dirac_parser"
2347 dts_demuxer_select="dca_parser"
2348 dtshd_demuxer_select="dca_parser"
2349 dxa_demuxer_select="riffdec"
2350 eac3_demuxer_select="ac3_parser"
2351 f4v_muxer_select="mov_muxer"
2352 flac_demuxer_select="flac_parser"
2353 hds_muxer_select="flv_muxer"
2354 hls_muxer_select="mpegts_muxer"
2355 image2_alias_pix_demuxer_select="image2_demuxer"
2356 image2_brender_pix_demuxer_select="image2_demuxer"
2357 ipod_muxer_select="mov_muxer"
2358 ismv_muxer_select="mov_muxer"
2359 libnut_demuxer_deps="libnut"
2360 libnut_muxer_deps="libnut"
2361 matroska_audio_muxer_select="matroska_muxer"
2362 matroska_demuxer_select="riffdec"
2363 matroska_demuxer_suggest="bzlib lzo zlib"
2364 matroska_muxer_select="riffenc"
2365 mmf_muxer_select="riffenc"
2366 mov_demuxer_select="riffdec"
2367 mov_demuxer_suggest="zlib"
2368 mov_muxer_select="riffenc rtpenc_chain"
2369 mp3_demuxer_select="mpegaudio_parser"
2370 mp4_muxer_select="mov_muxer"
2371 mpegts_muxer_select="adts_muxer latm_muxer"
2372 mpegtsraw_demuxer_select="mpegts_demuxer"
2373 mxf_d10_muxer_select="mxf_muxer"
2374 nut_muxer_select="riffenc"
2375 nuv_demuxer_select="riffdec"
2376 ogg_demuxer_select="golomb"
2377 psp_muxer_select="mov_muxer"
2378 rtp_demuxer_select="sdp_demuxer"
2379 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2380 rtsp_demuxer_select="http_protocol rtpdec"
2381 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2382 sap_demuxer_select="sdp_demuxer"
2383 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2384 sdp_demuxer_select="rtpdec"
2385 smoothstreaming_muxer_select="ismv_muxer"
2386 spdif_muxer_select="aac_parser"
2387 tak_demuxer_select="tak_parser"
2388 tg2_muxer_select="mov_muxer"
2389 tgp_muxer_select="mov_muxer"
2390 vobsub_demuxer_select="mpegps_demuxer"
2391 w64_demuxer_select="wav_demuxer"
2392 w64_muxer_select="wav_muxer"
2393 wav_demuxer_select="riffdec"
2394 wav_muxer_select="riffenc"
2395 webm_muxer_select="riffenc"
2396 wtv_demuxer_select="riffdec"
2397 wtv_muxer_select="riffenc"
2398 xmv_demuxer_select="riffdec"
2399 xwma_demuxer_select="riffdec"
2400
2401 # indevs / outdevs
2402 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2403 alsa_outdev_deps="alsa_asoundlib_h"
2404 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2405 avfoundation_indev_select="avfoundation"
2406 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2407 caca_outdev_deps="libcaca"
2408 decklink_outdev_deps="decklink pthreads"
2409 decklink_outdev_extralibs="-lstdc++"
2410 dshow_indev_deps="IBaseFilter"
2411 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2412 dv1394_indev_deps="dv1394"
2413 dv1394_indev_select="dv_demuxer"
2414 fbdev_indev_deps="linux_fb_h"
2415 fbdev_outdev_deps="linux_fb_h"
2416 gdigrab_indev_deps="CreateDIBSection"
2417 gdigrab_indev_extralibs="-lgdi32"
2418 gdigrab_indev_select="bmp_decoder"
2419 iec61883_indev_deps="libiec61883"
2420 jack_indev_deps="jack_jack_h sem_timedwait"
2421 lavfi_indev_deps="avfilter"
2422 libcdio_indev_deps="libcdio"
2423 libdc1394_indev_deps="libdc1394"
2424 libv4l2_indev_deps="libv4l2"
2425 openal_indev_deps="openal"
2426 opengl_outdev_deps="opengl"
2427 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2428 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2429 pulse_indev_deps="libpulse"
2430 pulse_outdev_deps="libpulse"
2431 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2432 qtkit_indev_select="qtkit"
2433 sdl_outdev_deps="sdl"
2434 sndio_indev_deps="sndio_h"
2435 sndio_outdev_deps="sndio_h"
2436 v4l_indev_deps="linux_videodev_h"
2437 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2438 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2439 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2440 vfwcap_indev_extralibs="-lavicap32"
2441 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2442 xv_outdev_extralibs="-lXv -lX11 -lXext"
2443 x11grab_indev_deps="x11grab"
2444
2445 # protocols
2446 bluray_protocol_deps="libbluray"
2447 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2448 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2449 ffrtmpcrypt_protocol_select="tcp_protocol"
2450 ffrtmphttp_protocol_deps="!librtmp_protocol"
2451 ffrtmphttp_protocol_select="http_protocol"
2452 ftp_protocol_select="tcp_protocol"
2453 gopher_protocol_select="network"
2454 http_protocol_select="tcp_protocol"
2455 httpproxy_protocol_select="tcp_protocol"
2456 https_protocol_select="tls_protocol"
2457 librtmp_protocol_deps="librtmp"
2458 librtmpe_protocol_deps="librtmp"
2459 librtmps_protocol_deps="librtmp"
2460 librtmpt_protocol_deps="librtmp"
2461 librtmpte_protocol_deps="librtmp"
2462 libssh_protocol_deps="libssh"
2463 mmsh_protocol_select="http_protocol"
2464 mmst_protocol_select="network"
2465 rtmp_protocol_deps="!librtmp_protocol"
2466 rtmp_protocol_select="tcp_protocol"
2467 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2468 rtmps_protocol_deps="!librtmp_protocol"
2469 rtmps_protocol_select="tls_protocol"
2470 rtmpt_protocol_select="ffrtmphttp_protocol"
2471 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2472 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2473 rtp_protocol_select="udp_protocol"
2474 sctp_protocol_deps="struct_sctp_event_subscribe"
2475 sctp_protocol_select="network"
2476 srtp_protocol_select="rtp_protocol"
2477 tcp_protocol_select="network"
2478 tls_protocol_deps_any="openssl gnutls"
2479 tls_protocol_select="tcp_protocol"
2480 udp_protocol_select="network"
2481 unix_protocol_deps="sys_un_h"
2482 unix_protocol_select="network"
2483
2484 # filters
2485 aconvert_filter_deps="swresample"
2486 amovie_filter_deps="avcodec avformat"
2487 aresample_filter_deps="swresample"
2488 ass_filter_deps="libass"
2489 asyncts_filter_deps="avresample"
2490 atempo_filter_deps="avcodec"
2491 atempo_filter_select="rdft"
2492 azmq_filter_deps="libzmq"
2493 blackframe_filter_deps="gpl"
2494 boxblur_filter_deps="gpl"
2495 bs2b_filter_deps="libbs2b"
2496 colormatrix_filter_deps="gpl"
2497 cropdetect_filter_deps="gpl"
2498 dctdnoiz_filter_deps="avcodec"
2499 dctdnoiz_filter_select="dct"
2500 delogo_filter_deps="gpl"
2501 deshake_filter_deps="avcodec"
2502 deshake_filter_select="dsputil"
2503 drawtext_filter_deps="libfreetype"
2504 ebur128_filter_deps="gpl"
2505 flite_filter_deps="libflite"
2506 frei0r_filter_deps="frei0r dlopen"
2507 frei0r_filter_extralibs='$ldl'
2508 frei0r_src_filter_deps="frei0r dlopen"
2509 frei0r_src_filter_extralibs='$ldl'
2510 geq_filter_deps="gpl"
2511 histeq_filter_deps="gpl"
2512 hqdn3d_filter_deps="gpl"
2513 interlace_filter_deps="gpl"
2514 kerndeint_filter_deps="gpl"
2515 ladspa_filter_deps="ladspa dlopen"
2516 ladspa_filter_extralibs='$ldl'
2517 mcdeint_filter_deps="avcodec gpl"
2518 movie_filter_deps="avcodec avformat"
2519 mp_filter_deps="gpl avcodec swscale inline_asm"
2520 mpdecimate_filter_deps="gpl avcodec"
2521 mptestsrc_filter_deps="gpl"
2522 negate_filter_deps="lut_filter"
2523 perspective_filter_deps="gpl"
2524 ocv_filter_deps="libopencv"
2525 owdenoise_filter_deps="gpl"
2526 pan_filter_deps="swresample"
2527 phase_filter_deps="gpl"
2528 pp_filter_deps="gpl postproc"
2529 pullup_filter_deps="gpl"
2530 removelogo_filter_deps="avcodec avformat swscale"
2531 resample_filter_deps="avresample"
2532 sab_filter_deps="gpl swscale"
2533 scale_filter_deps="swscale"
2534 smartblur_filter_deps="gpl swscale"
2535 showspectrum_filter_deps="avcodec"
2536 showspectrum_filter_select="rdft"
2537 spp_filter_deps="gpl avcodec"
2538 spp_filter_select="fft"
2539 stereo3d_filter_deps="gpl"
2540 subtitles_filter_deps="avformat avcodec libass"
2541 super2xsai_filter_deps="gpl"
2542 tinterlace_filter_deps="gpl"
2543 vidstabdetect_filter_deps="libvidstab"
2544 vidstabtransform_filter_deps="libvidstab"
2545 pixfmts_super2xsai_test_deps="super2xsai_filter"
2546 tinterlace_merge_test_deps="tinterlace_filter"
2547 tinterlace_pad_test_deps="tinterlace_filter"
2548 zmq_filter_deps="libzmq"
2549 zoompan_filter_deps="swscale"
2550
2551 # examples
2552 avio_reading="avformat avcodec avutil"
2553 avcodec_example_deps="avcodec avutil"
2554 demuxing_decoding_example_deps="avcodec avformat avutil"
2555 filter_audio_example_deps="avfilter avutil"
2556 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2557 filtering_video_example_deps="avfilter avcodec avformat avutil"
2558 metadata_example_deps="avformat avutil"
2559 muxing_example_deps="avcodec avformat avutil swscale"
2560 remuxing_example_deps="avcodec avformat avutil"
2561 resampling_audio_example_deps="avutil swresample"
2562 scaling_video_example_deps="avutil swscale"
2563 transcode_aac_example_deps="avcodec avformat swresample"
2564 transcoding_example_deps="avfilter avcodec avformat avutil"
2565
2566 # libraries, in linking order
2567 avcodec_deps="avutil"
2568 avdevice_deps="avformat avcodec avutil"
2569 avfilter_deps="avutil"
2570 avformat_deps="avcodec avutil"
2571 avresample_deps="avutil"
2572 postproc_deps="avutil gpl"
2573 swresample_deps="avutil"
2574 swscale_deps="avutil"
2575
2576 # programs
2577 ffmpeg_deps="avcodec avfilter avformat swresample"
2578 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2579                null_filter
2580                setpts_filter trim_filter"
2581 ffplay_deps="avcodec avformat swscale swresample sdl"
2582 ffplay_libs='$sdl_libs'
2583 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2584 ffprobe_deps="avcodec avformat"
2585 ffserver_deps="avformat fork sarestart"
2586 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2587
2588 # documentation
2589 podpages_deps="perl"
2590 manpages_deps="perl pod2man"
2591 htmlpages_deps="perl texi2html"
2592 txtpages_deps="perl makeinfo"
2593 doc_deps_any="manpages htmlpages podpages txtpages"
2594
2595 # default parameters
2596
2597 logfile="config.log"
2598
2599 # installation paths
2600 prefix_default="/usr/local"
2601 bindir_default='${prefix}/bin'
2602 datadir_default='${prefix}/share/ffmpeg'
2603 docdir_default='${prefix}/share/doc/ffmpeg'
2604 incdir_default='${prefix}/include'
2605 libdir_default='${prefix}/lib'
2606 mandir_default='${prefix}/share/man'
2607 shlibdir_default="$libdir_default"
2608
2609 # toolchain
2610 ar_default="ar"
2611 cc_default="gcc"
2612 cxx_default="g++"
2613 host_cc_default="gcc"
2614 cp_f="cp -f"
2615 install="install"
2616 ln_s="ln -s -f"
2617 nm_default="nm -g"
2618 objformat="elf"
2619 pkg_config_default=pkg-config
2620 ranlib_default="ranlib"
2621 strip_default="strip"
2622 yasmexe_default="yasm"
2623 windres_default="windres"
2624
2625 nogas=":"
2626
2627 # OS
2628 target_os_default=$(tolower $(uname -s))
2629 host_os=$target_os_default
2630
2631 # machine
2632 if test "$target_os_default" = aix; then
2633     arch_default=$(uname -p)
2634     strip_default="strip -X32_64"
2635 else
2636     arch_default=$(uname -m)
2637 fi
2638 cpu="generic"
2639
2640 # configurable options
2641 enable $PROGRAM_LIST
2642 enable $DOCUMENT_LIST
2643 enable $EXAMPLE_LIST
2644 enable $(filter_out avresample $LIBRARY_LIST)
2645 enable stripping
2646
2647 enable asm
2648 enable debug
2649 enable doc
2650 enable optimizations
2651 enable runtime_cpudetect
2652 enable safe_bitstream_reader
2653 enable static
2654 enable swscale_alpha
2655
2656 sws_max_filter_size_default=256
2657 set_default sws_max_filter_size
2658
2659 # Enable hwaccels by default.
2660 enable dxva2 vaapi vda vdpau xvmc
2661 enable xlib
2662
2663 # build settings
2664 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2665 LIBPREF="lib"
2666 LIBSUF=".a"
2667 FULLNAME='$(NAME)$(BUILDSUF)'
2668 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2669 SLIBPREF="lib"
2670 SLIBSUF=".so"
2671 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2672 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2673 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2674 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2675 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2676 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2677
2678 asflags_filter=echo
2679 cflags_filter=echo
2680 ldflags_filter=echo
2681
2682 AS_C='-c'
2683 AS_O='-o $@'
2684 CC_C='-c'
2685 CC_E='-E -o $@'
2686 CC_O='-o $@'
2687 CXX_C='-c'
2688 CXX_O='-o $@'
2689 LD_O='-o $@'
2690 LD_LIB='-l%'
2691 LD_PATH='-L'
2692 HOSTCC_C='-c'
2693 HOSTCC_E='-E -o $@'
2694 HOSTCC_O='-o $@'
2695 HOSTLD_O='-o $@'
2696
2697 host_libs='-lm'
2698 host_cflags_filter=echo
2699 host_ldflags_filter=echo
2700
2701 target_path='$(CURDIR)'
2702
2703 # since the object filename is not given with the -MM flag, the compiler
2704 # is only able to print the basename, and we must add the path ourselves
2705 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2706 DEPFLAGS='-MM'
2707
2708 # find source path
2709 if test -f configure; then
2710     source_path=.
2711 else
2712     source_path=$(cd $(dirname "$0"); pwd)
2713     echo "$source_path" | grep -q '[[:blank:]]' &&
2714         die "Out of tree builds are impossible with whitespace in source path."
2715     test -e "$source_path/config.h" &&
2716         die "Out of tree builds are impossible with config.h in source dir."
2717 fi
2718
2719 for v in "$@"; do
2720     r=${v#*=}
2721     l=${v%"$r"}
2722     r=$(sh_quote "$r")
2723     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2724 done
2725
2726 find_things(){
2727     thing=$1
2728     pattern=$2
2729     file=$source_path/$3
2730     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2731 }
2732
2733 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2734 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2735 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2736 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2737 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2738 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2739 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2740 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2741 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2742 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2743 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2744
2745 ALL_COMPONENTS="
2746     $BSF_LIST
2747     $DECODER_LIST
2748     $DEMUXER_LIST
2749     $ENCODER_LIST
2750     $FILTER_LIST
2751     $HWACCEL_LIST
2752     $INDEV_LIST
2753     $MUXER_LIST
2754     $OUTDEV_LIST
2755     $PARSER_LIST
2756     $PROTOCOL_LIST
2757 "
2758
2759 for n in $COMPONENT_LIST; do
2760     v=$(toupper ${n%s})_LIST
2761     eval enable \$$v
2762     eval ${n}_if_any="\$$v"
2763 done
2764
2765 enable $ARCH_EXT_LIST
2766
2767 die_unknown(){
2768     echo "Unknown option \"$1\"."
2769     echo "See $0 --help for available options."
2770     exit 1
2771 }
2772
2773 print_3_columns() {
2774     cat | tr ' ' '\n' | sort | pr -r -3 -t
2775 }
2776
2777 show_list() {
2778     suffix=_$1
2779     shift
2780     echo $* | sed s/$suffix//g | print_3_columns
2781     exit 0
2782 }
2783
2784 rand_list(){
2785     IFS=', '
2786     set -- $*
2787     unset IFS
2788     for thing; do
2789         comp=${thing%:*}
2790         prob=${thing#$comp}
2791         prob=${prob#:}
2792         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2793         echo "prob ${prob:-0.5}"
2794         printf '%s\n' $comp
2795     done
2796 }
2797
2798 do_random(){
2799     action=$1
2800     shift
2801     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2802     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2803 }
2804
2805 for opt do
2806     optval="${opt#*=}"
2807     case "$opt" in
2808         --extra-ldflags=*)
2809             add_ldflags $optval
2810         ;;
2811         --extra-libs=*)
2812             add_extralibs $optval
2813         ;;
2814         --disable-devices)
2815             disable $INDEV_LIST $OUTDEV_LIST
2816         ;;
2817         --enable-debug=*)
2818             debuglevel="$optval"
2819         ;;
2820         --disable-programs)
2821             disable $PROGRAM_LIST
2822         ;;
2823         --disable-everything)
2824             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2825         ;;
2826         --disable-all)
2827             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2828             disable $LIBRARY_LIST $PROGRAM_LIST doc
2829         ;;
2830         --enable-random|--disable-random)
2831             action=${opt%%-random}
2832             do_random ${action#--} $COMPONENT_LIST
2833         ;;
2834         --enable-random=*|--disable-random=*)
2835             action=${opt%%-random=*}
2836             do_random ${action#--} $optval
2837         ;;
2838         --enable-*=*|--disable-*=*)
2839             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2840             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2841             eval list=\$$(toupper $thing)_LIST
2842             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2843             list=$(filter "$name" $list)
2844             [ "$list" = "" ] && warn "Option $opt did not match anything"
2845             $action $list
2846         ;;
2847         --enable-?*|--disable-?*)
2848             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2849             if is_in $option $COMPONENT_LIST; then
2850                 test $action = disable && action=unset
2851                 eval $action \$$(toupper ${option%s})_LIST
2852             elif is_in $option $CMDLINE_SELECT; then
2853                 $action $option
2854             else
2855                 die_unknown $opt
2856             fi
2857         ;;
2858         --list-*)
2859             NAME="${opt#--list-}"
2860             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2861             NAME=${NAME%s}
2862             eval show_list $NAME \$$(toupper $NAME)_LIST
2863         ;;
2864         --help|-h) show_help
2865         ;;
2866         --fatal-warnings) enable fatal_warnings
2867         ;;
2868         *)
2869             optname="${opt%%=*}"
2870             optname="${optname#--}"
2871             optname=$(echo "$optname" | sed 's/-/_/g')
2872             if is_in $optname $CMDLINE_SET; then
2873                 eval $optname='$optval'
2874             elif is_in $optname $CMDLINE_APPEND; then
2875                 append $optname "$optval"
2876             else
2877                 die_unknown $opt
2878             fi
2879         ;;
2880     esac
2881 done
2882
2883 disabled logging && logfile=/dev/null
2884
2885 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2886 set >> $logfile
2887
2888 test -n "$cross_prefix" && enable cross_compile
2889
2890 if enabled cross_compile; then
2891     test -n "$arch" && test -n "$target_os" ||
2892         die "Must specify target arch and OS when cross-compiling"
2893 fi
2894
2895 ar_default="${cross_prefix}${ar_default}"
2896 cc_default="${cross_prefix}${cc_default}"
2897 cxx_default="${cross_prefix}${cxx_default}"
2898 nm_default="${cross_prefix}${nm_default}"
2899 pkg_config_default="${cross_prefix}${pkg_config_default}"
2900 ranlib_default="${cross_prefix}${ranlib_default}"
2901 strip_default="${cross_prefix}${strip_default}"
2902 windres_default="${cross_prefix}${windres_default}"
2903
2904 sysinclude_default="${sysroot}/usr/include"
2905
2906 test -n "$valgrind" && toolchain="valgrind-memcheck"
2907
2908 case "$toolchain" in
2909     clang-asan)
2910         cc_default="clang"
2911         add_cflags  -fsanitize=address
2912         add_ldflags -fsanitize=address
2913     ;;
2914     clang-tsan)
2915         cc_default="clang"
2916         add_cflags  -fsanitize=thread -pie
2917         add_ldflags -fsanitize=thread -pie
2918     ;;
2919     clang-usan)
2920         cc_default="clang"
2921         add_cflags  -fsanitize=undefined
2922         add_ldflags -fsanitize=undefined
2923     ;;
2924     gcc-asan)
2925         cc_default="gcc"
2926         add_cflags  -fsanitize=address
2927         add_ldflags -fsanitize=address
2928     ;;
2929     gcc-tsan)
2930         cc_default="gcc"
2931         add_cflags  -fsanitize=thread -pie -fPIC
2932         add_ldflags -fsanitize=thread -pie -fPIC
2933     ;;
2934     gcc-usan)
2935         cc_default="gcc"
2936         add_cflags  -fsanitize=undefined
2937         add_ldflags -fsanitize=undefined
2938     ;;
2939     valgrind-massif)
2940         target_exec_default=${valgrind:-"valgrind"}
2941         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"
2942     ;;
2943     valgrind-memcheck)
2944         target_exec_default=${valgrind:-"valgrind"}
2945         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2946     ;;
2947     msvc)
2948         # Check whether the current MSVC version needs the C99 converter.
2949         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2950         # support enough of C99 to build ffmpeg. Default to the new
2951         # behaviour if the regexp was unable to match anything, since this
2952         # successfully parses the version number of existing supported
2953         # versions that require the converter (MSVC 2010 and 2012).
2954         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2955         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2956             cc_default="cl"
2957         else
2958             cc_default="c99wrap cl"
2959         fi
2960         ld_default="link"
2961         nm_default="dumpbin -symbols"
2962         ar_default="lib"
2963         target_os_default="win32"
2964         # Use a relative path for TMPDIR. This makes sure all the
2965         # ffconf temp files are written with a relative path, avoiding
2966         # issues with msys/win32 path conversion for MSVC parameters
2967         # such as -Fo<file> or -out:<file>.
2968         TMPDIR=.
2969     ;;
2970     icl)
2971         cc_default="icl"
2972         ld_default="xilink"
2973         nm_default="dumpbin -symbols"
2974         ar_default="xilib"
2975         target_os_default="win32"
2976         TMPDIR=.
2977     ;;
2978     gcov)
2979         add_cflags  -fprofile-arcs -ftest-coverage
2980         add_ldflags -fprofile-arcs -ftest-coverage
2981     ;;
2982     hardened)
2983         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2984         add_ldflags -Wl,-z,relro -Wl,-z,now
2985     ;;
2986     ?*)
2987         die "Unknown toolchain $toolchain"
2988     ;;
2989 esac
2990
2991 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2992 enabled cross_compile || host_cc_default=$cc
2993 set_default host_cc
2994
2995 if ! $pkg_config --version >/dev/null 2>&1; then
2996     warn "$pkg_config not found, library detection may fail."
2997     pkg_config=false
2998 fi
2999
3000 exesuf() {
3001     case $1 in
3002         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3003     esac
3004 }
3005
3006 EXESUF=$(exesuf $target_os)
3007 HOSTEXESUF=$(exesuf $host_os)
3008
3009 # set temporary file name
3010 : ${TMPDIR:=$TEMPDIR}
3011 : ${TMPDIR:=$TMP}
3012 : ${TMPDIR:=/tmp}
3013
3014 if [ -n "$tempprefix" ] ; then
3015     mktemp(){
3016         echo $tempprefix.${HOSTNAME}.${UID}
3017     }
3018 elif ! check_cmd mktemp -u XXXXXX; then
3019     # simple replacement for missing mktemp
3020     # NOT SAFE FOR GENERAL USE
3021     mktemp(){
3022         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3023     }
3024 fi
3025
3026 tmpfile(){
3027     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3028         (set -C; exec > $tmp) 2>/dev/null ||
3029         die "Unable to create temporary file in $TMPDIR."
3030     append TMPFILES $tmp
3031     eval $1=$tmp
3032 }
3033
3034 trap 'rm -f -- $TMPFILES' EXIT
3035
3036 tmpfile TMPASM .asm
3037 tmpfile TMPC   .c
3038 tmpfile TMPCPP .cpp
3039 tmpfile TMPE   $EXESUF
3040 tmpfile TMPH   .h
3041 tmpfile TMPM   .m
3042 tmpfile TMPO   .o
3043 tmpfile TMPS   .S
3044 tmpfile TMPSH  .sh
3045 tmpfile TMPV   .ver
3046
3047 unset -f mktemp
3048
3049 chmod +x $TMPE
3050
3051 # make sure we can execute files in $TMPDIR
3052 cat > $TMPSH 2>> $logfile <<EOF
3053 #! /bin/sh
3054 EOF
3055 chmod +x $TMPSH >> $logfile 2>&1
3056 if ! $TMPSH >> $logfile 2>&1; then
3057     cat <<EOF
3058 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3059 variable to another directory and make sure that it is not mounted noexec.
3060 EOF
3061     die "Sanity test failed."
3062 fi
3063
3064 ccc_flags(){
3065     for flag; do
3066         case $flag in
3067             -std=c99)           echo -c99                       ;;
3068             -mcpu=*)            echo -arch ${flag#*=}           ;;
3069             -mieee)             echo -ieee                      ;;
3070             -O*|-fast)          echo $flag                      ;;
3071             -fno-math-errno)    echo -assume nomath_errno       ;;
3072             -g)                 echo -g3                        ;;
3073             -Wall)              echo -msg_enable level2         ;;
3074             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3075             -Wl,*)              echo $flag                      ;;
3076             -f*|-W*)                                            ;;
3077             *)                  echo $flag                      ;;
3078         esac
3079    done
3080 }
3081
3082 cparser_flags(){
3083     for flag; do
3084         case $flag in
3085             -Wno-switch)             echo -Wno-switch-enum ;;
3086             -Wno-format-zero-length) ;;
3087             -Wdisabled-optimization) ;;
3088             -Wno-pointer-sign)       echo -Wno-other ;;
3089             *)                       echo $flag ;;
3090         esac
3091     done
3092 }
3093
3094 msvc_common_flags(){
3095     for flag; do
3096         case $flag in
3097             # In addition to specifying certain flags under the compiler
3098             # specific filters, they must be specified here as well or else the
3099             # generic catch all at the bottom will print the original flag.
3100             -Wall)                ;;
3101             -std=c99)             ;;
3102             # Common flags
3103             -fomit-frame-pointer) ;;
3104             -g)                   echo -Z7 ;;
3105             -fno-math-errno)      ;;
3106             -fno-common)          ;;
3107             -fno-signed-zeros)    ;;
3108             -fPIC)                ;;
3109             -mthumb)              ;;
3110             -march=*)             ;;
3111             -lz)                  echo zlib.lib ;;
3112             -lavifil32)           echo vfw32.lib ;;
3113             -lavicap32)           echo vfw32.lib user32.lib ;;
3114             -l*)                  echo ${flag#-l}.lib ;;
3115             *)                    echo $flag ;;
3116         esac
3117     done
3118 }
3119
3120 msvc_flags(){
3121     msvc_common_flags "$@"
3122     for flag; do
3123         case $flag in
3124             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3125                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3126                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3127                                        -wd4554 \
3128                                        -wd4273 ;;
3129         esac
3130     done
3131 }
3132
3133 icl_flags(){
3134     msvc_common_flags "$@"
3135     for flag; do
3136         case $flag in
3137             # Despite what Intel's documentation says -Wall, which is supported
3138             # on Windows, does enable remarks so disable them here.
3139             -Wall)                echo $flag -Qdiag-disable:remark ;;
3140             -std=c99)             echo -Qstd=c99 ;;
3141         esac
3142     done
3143 }
3144
3145 icc_flags(){
3146     for flag; do
3147         case $flag in
3148             -flto)                echo -ipo ;;
3149             *)                    echo $flag ;;
3150         esac
3151     done
3152 }
3153
3154 pgi_flags(){
3155     for flag; do
3156         case $flag in
3157             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3158             -fomit-frame-pointer) echo -Mnoframe ;;
3159             -g)                   echo -gopt ;;
3160             *)                    echo $flag ;;
3161         esac
3162     done
3163 }
3164
3165 suncc_flags(){
3166     for flag; do
3167         case $flag in
3168             -march=*|-mcpu=*)
3169                 case "${flag#*=}" in
3170                     native)                   echo -xtarget=native       ;;
3171                     v9|niagara)               echo -xarch=sparc          ;;
3172                     ultrasparc)               echo -xarch=sparcvis       ;;
3173                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3174                     i586|pentium)             echo -xchip=pentium        ;;
3175                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3176                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3177                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3178                     pentium4*)          echo -xtarget=pentium4           ;;
3179                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3180                     *-sse3)             echo -xarch=sse3                 ;;
3181                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3182                     bonnell)                   echo -xarch=ssse3         ;;
3183                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3184                     westmere)                  echo -xtarget=westmere    ;;
3185                     silvermont)                echo -xarch=sse4_2        ;;
3186                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3187                     core-avx*|ivybridge|haswell|broadwell)
3188                                                echo -xarch=avx           ;;
3189                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3190                     btver1)                    echo -xarch=amdsse4a      ;;
3191                     btver2|bdver*)             echo -xarch=avx           ;;
3192                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3193                     k8|opteron|athlon64|athlon-fx)
3194                                                echo -xarch=sse2a         ;;
3195                     athlon*)                   echo -xarch=pentium_proa  ;;
3196                 esac
3197                 ;;
3198             -std=c99)             echo -xc99              ;;
3199             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3200             -fPIC)                echo -KPIC -xcode=pic32 ;;
3201             -W*,*)                echo $flag              ;;
3202             -f*-*|-W*|-mimpure-text)                      ;;
3203             -shared)              echo -G                 ;;
3204             *)                    echo $flag              ;;
3205         esac
3206     done
3207 }
3208
3209 tms470_flags(){
3210     for flag; do
3211         case $flag in
3212             -march=*|-mcpu=*)
3213                 case "${flag#*=}" in
3214                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3215                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3216                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3217                     armv6*|arm11*)          echo -mv=6   ;;
3218                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3219                                             echo -mv=5e  ;;
3220                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3221                 esac
3222                 ;;
3223             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3224             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3225             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3226             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3227             -msoft-float)   echo --float_support=vfplib       ;;
3228             -O[0-3]|-mf=*)  echo $flag                        ;;
3229             -g)             echo -g -mn                       ;;
3230             -pds=*)         echo $flag                        ;;
3231             -D*|-I*)        echo $flag                        ;;
3232             --gcc|--abi=*)  echo $flag                        ;;
3233             -me)            echo $flag                        ;;
3234         esac
3235     done
3236 }
3237
3238 probe_cc(){
3239     pfx=$1
3240     _cc=$2
3241
3242     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3243     unset _ld_o _ldflags _ld_lib _ld_path
3244     unset _depflags _DEPCMD _DEPFLAGS
3245     _flags_filter=echo
3246
3247     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3248         true # no-op to avoid reading stdin in following checks
3249     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3250         _type=llvm_gcc
3251         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3252         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3253         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3254         _cflags_speed='-O3'
3255         _cflags_size='-Os'
3256     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3257         _type=gcc
3258         gcc_version=$($_cc --version | head -n1)
3259         gcc_basever=$($_cc -dumpversion)
3260         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3261         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3262         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3263         if ! $_cc -dumpversion | grep -q '^2\.'; then
3264             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3265         fi
3266         _cflags_speed='-O3'
3267         _cflags_size='-Os'
3268     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3269         _type=icc
3270         _ident=$($_cc --version | head -n1)
3271         _depflags='-MMD'
3272         _cflags_speed='-O3'
3273         _cflags_size='-Os'
3274         _cflags_noopt='-O1'
3275         _flags_filter=icc_flags
3276     elif $_cc -v 2>&1 | grep -q xlc; then
3277         _type=xlc
3278         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3279         _cflags_speed='-O5'
3280         _cflags_size='-O5 -qcompact'
3281     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3282         _type=ccc
3283         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3284         _DEPFLAGS='-M'
3285         _cflags_speed='-fast'
3286         _cflags_size='-O1'
3287         _flags_filter=ccc_flags
3288     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3289         test -d "$sysroot" || die "No valid sysroot specified."
3290         _type=armcc
3291         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3292         armcc_conf="$PWD/armcc.conf"
3293         $_cc --arm_linux_configure                 \
3294              --arm_linux_config_file="$armcc_conf" \
3295              --configure_sysroot="$sysroot"        \
3296              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3297              die "Error creating armcc configuration file."
3298         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3299         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3300         as_default="${cross_prefix}gcc"
3301         _depflags='-MMD'
3302         _cflags_speed='-O3'
3303         _cflags_size='-Os'
3304     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3305         _type=tms470
3306         _ident=$($_cc -version | head -n1 | tr -s ' ')
3307         _flags='--gcc --abi=eabi -me'
3308         _cc_e='-ppl -fe=$@'
3309         _cc_o='-fe=$@'
3310         _depflags='-ppa -ppd=$(@:.o=.d)'
3311         _cflags_speed='-O3 -mf=5'
3312         _cflags_size='-O3 -mf=2'
3313         _flags_filter=tms470_flags
3314     elif $_cc -v 2>&1 | grep -q clang; then
3315         _type=clang
3316         _ident=$($_cc --version | head -n1)
3317         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3318         _cflags_speed='-O3'
3319         _cflags_size='-Os'
3320     elif $_cc -V 2>&1 | grep -q Sun; then
3321         _type=suncc
3322         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3323         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3324         _DEPFLAGS='-xM1 -xc99'
3325         _ldflags='-std=c99'
3326         _cflags_speed='-O5'
3327         _cflags_size='-O5 -xspace'
3328         _flags_filter=suncc_flags
3329     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3330         _type=pathscale
3331         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3332         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3333         _cflags_speed='-O2'
3334         _cflags_size='-Os'
3335         _flags_filter='filter_out -Wdisabled-optimization'
3336     elif $_cc -v 2>&1 | grep -q Open64; then
3337         _type=open64
3338         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3339         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3340         _cflags_speed='-O2'
3341         _cflags_size='-Os'
3342         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3343     elif $_cc -V 2>&1 | grep -q Portland; then
3344         _type=pgi
3345         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3346         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3347         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3348         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3349         _cflags_noopt="-O"
3350         _flags_filter=pgi_flags
3351     elif $_cc 2>&1 | grep -q Microsoft; then
3352         _type=msvc
3353         _ident=$($cc 2>&1 | head -n1)
3354         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3355         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3356         _cflags_speed="-O2"
3357         _cflags_size="-O1"
3358         if $_cc 2>&1 | grep -q Linker; then
3359             _ld_o='-out:$@'
3360         else
3361             _ld_o='-Fe$@'
3362         fi
3363         _cc_o='-Fo$@'
3364         _cc_e='-P -Fi$@'
3365         _flags_filter=msvc_flags
3366         _ld_lib='lib%.a'
3367         _ld_path='-libpath:'
3368         _flags='-nologo'
3369         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3370         if [ $pfx = hostcc ]; then
3371             append _cflags -Dsnprintf=_snprintf
3372         fi
3373         disable stripping
3374     elif $_cc 2>&1 | grep -q Intel; then
3375         _type=icl
3376         _ident=$($cc 2>&1 | head -n1)
3377         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3378         # Not only is O3 broken on 13.x+ but it is slower on all previous
3379         # versions (tested) as well.
3380         _cflags_speed="-O2"
3381         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3382         if $_cc 2>&1 | grep -q Linker; then
3383             _ld_o='-out:$@'
3384         else
3385             _ld_o='-Fe$@'
3386         fi
3387         _cc_o='-Fo$@'
3388         _cc_e='-P'
3389         _flags_filter=icl_flags
3390         _ld_lib='lib%.a'
3391         _ld_path='-libpath:'
3392         # -Qdiag-error to make icl error when seeing certain unknown arguments
3393         _flags='-nologo -Qdiag-error:4044,10157'
3394         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3395         # with MSVC which enables it by default.
3396         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3397         if [ $pfx = hostcc ]; then
3398             append _cflags -Dsnprintf=_snprintf
3399         fi
3400     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3401         _type=cparser
3402         _ident=$($_cc --version | head -n1)
3403         _depflags='-MMD'
3404         _cflags_speed='-O4'
3405         _cflags_size='-O2'
3406         _flags_filter=cparser_flags
3407     fi
3408
3409     eval ${pfx}_type=\$_type
3410     eval ${pfx}_ident=\$_ident
3411 }
3412
3413 set_ccvars(){
3414     eval ${1}_C=\${_cc_c-\${${1}_C}}
3415     eval ${1}_E=\${_cc_e-\${${1}_E}}
3416     eval ${1}_O=\${_cc_o-\${${1}_O}}
3417
3418     if [ -n "$_depflags" ]; then
3419         eval ${1}_DEPFLAGS=\$_depflags
3420     else
3421         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3422         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3423         eval DEP${1}FLAGS=\$_flags
3424     fi
3425 }
3426
3427 probe_cc cc "$cc"
3428 cflags_filter=$_flags_filter
3429 cflags_speed=$_cflags_speed
3430 cflags_size=$_cflags_size
3431 cflags_noopt=$_cflags_noopt
3432 add_cflags $_flags $_cflags
3433 cc_ldflags=$_ldflags
3434 set_ccvars CC
3435
3436 probe_cc hostcc "$host_cc"
3437 host_cflags_filter=$_flags_filter
3438 add_host_cflags  $_flags $_cflags
3439 set_ccvars HOSTCC
3440
3441 test -n "$cc_type" && enable $cc_type ||
3442     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3443
3444 : ${as_default:=$cc}
3445 : ${dep_cc_default:=$cc}
3446 : ${ld_default:=$cc}
3447 : ${host_ld_default:=$host_cc}
3448 set_default ar as dep_cc ld host_ld windres
3449
3450 probe_cc as "$as"
3451 asflags_filter=$_flags_filter
3452 add_asflags $_flags $_cflags
3453 set_ccvars AS
3454
3455 probe_cc ld "$ld"
3456 ldflags_filter=$_flags_filter
3457 add_ldflags $_flags $_ldflags
3458 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3459 LD_O=${_ld_o-$LD_O}
3460 LD_LIB=${_ld_lib-$LD_LIB}
3461 LD_PATH=${_ld_path-$LD_PATH}
3462
3463 probe_cc hostld "$host_ld"
3464 host_ldflags_filter=$_flags_filter
3465 add_host_ldflags $_flags $_ldflags
3466 HOSTLD_O=${_ld_o-$HOSTLD_O}
3467
3468 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3469     probe_cc depcc "$dep_cc"
3470     CCDEP=${_DEPCMD:-$DEPCMD}
3471     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3472     DEPCCFLAGS=$_flags
3473 fi
3474
3475 if $ar 2>&1 | grep -q Microsoft; then
3476     arflags="-nologo"
3477     ar_o='-out:$@'
3478 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3479     arflags="rq"
3480     ar_o='$@'
3481 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3482     arflags='-Xany -r -c'
3483     ar_o='$@'
3484 else
3485     arflags="rc"
3486     ar_o='$@'
3487 fi
3488
3489 add_cflags $extra_cflags
3490 add_cxxflags $extra_cxxflags
3491 add_asflags $extra_cflags
3492
3493 if test -n "$sysroot"; then
3494     case "$cc_type" in
3495         gcc|llvm_gcc|clang)
3496             add_cppflags --sysroot="$sysroot"
3497             add_ldflags --sysroot="$sysroot"
3498 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3499             add_cppflags -isysroot "$sysroot"
3500             add_ldflags -isysroot "$sysroot"
3501         ;;
3502         tms470)
3503             add_cppflags -I"$sysinclude"
3504             add_ldflags  --sysroot="$sysroot"
3505         ;;
3506     esac
3507 fi
3508
3509 if test "$cpu" = host; then
3510     enabled cross_compile &&
3511         die "--cpu=host makes no sense when cross-compiling."
3512
3513     case "$cc_type" in
3514         gcc|llvm_gcc)
3515             check_native(){
3516                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3517                 sed -n "/cc1.*$1=/{
3518                             s/.*$1=\\([^ ]*\\).*/\\1/
3519                             p
3520                             q
3521                         }" $TMPE
3522             }
3523             cpu=$(check_native -march || check_native -mcpu)
3524         ;;
3525     esac
3526
3527     test "${cpu:-host}" = host &&
3528         die "--cpu=host not supported with compiler $cc"
3529 fi
3530
3531 # Deal with common $arch aliases
3532 case "$arch" in
3533     aarch64|arm64)
3534         arch="aarch64"
3535     ;;
3536     arm*|iPad*|iPhone*)
3537         arch="arm"
3538     ;;
3539     mips*|IP*)
3540         arch="mips"
3541     ;;
3542     parisc*|hppa*)
3543         arch="parisc"
3544     ;;
3545     "Power Macintosh"|ppc*|powerpc*)
3546         arch="ppc"
3547     ;;
3548     s390|s390x)
3549         arch="s390"
3550     ;;
3551     sh4|sh)
3552         arch="sh4"
3553     ;;
3554     sun4u|sparc*)
3555         arch="sparc"
3556     ;;
3557     tilegx|tile-gx)
3558         arch="tilegx"
3559     ;;
3560     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3561         arch="x86"
3562     ;;
3563 esac
3564
3565 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3566 enable $arch
3567
3568 # Add processor-specific flags
3569 if enabled aarch64; then
3570
3571     case $cpu in
3572         armv*)
3573             cpuflags="-march=$cpu"
3574         ;;
3575         *)
3576             cpuflags="-mcpu=$cpu"
3577         ;;
3578     esac
3579
3580 elif enabled alpha; then
3581
3582     cpuflags="-mcpu=$cpu"
3583
3584 elif enabled arm; then
3585
3586     check_arm_arch() {
3587         check_cpp_condition stddef.h \
3588             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3589             $cpuflags
3590     }
3591
3592     probe_arm_arch() {
3593         if   check_arm_arch 4;        then echo armv4;
3594         elif check_arm_arch 4T;       then echo armv4t;
3595         elif check_arm_arch 5;        then echo armv5;
3596         elif check_arm_arch 5E;       then echo armv5e;
3597         elif check_arm_arch 5T;       then echo armv5t;
3598         elif check_arm_arch 5TE;      then echo armv5te;
3599         elif check_arm_arch 5TEJ;     then echo armv5te;
3600         elif check_arm_arch 6;        then echo armv6;
3601         elif check_arm_arch 6J;       then echo armv6j;
3602         elif check_arm_arch 6K;       then echo armv6k;
3603         elif check_arm_arch 6Z;       then echo armv6z;
3604         elif check_arm_arch 6ZK;      then echo armv6zk;
3605         elif check_arm_arch 6T2;      then echo armv6t2;
3606         elif check_arm_arch 7;        then echo armv7;
3607         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3608         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3609         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3610         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3611         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3612         fi
3613     }
3614
3615     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3616
3617     case $cpu in
3618         armv*)
3619             cpuflags="-march=$cpu"
3620             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3621         ;;
3622         *)
3623             cpuflags="-mcpu=$cpu"
3624             case $cpu in
3625                 cortex-a*)                               subarch=armv7a  ;;
3626                 cortex-r*)                               subarch=armv7r  ;;
3627                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3628                 arm11*)                                  subarch=armv6   ;;
3629                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3630                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3631                 *)                             subarch=$(probe_arm_arch) ;;
3632             esac
3633         ;;
3634     esac
3635
3636     case "$subarch" in
3637         armv5t*)    enable fast_clz                ;;
3638         armv[6-8]*)
3639             enable fast_clz
3640             disabled fast_unaligned || enable fast_unaligned
3641             ;;
3642     esac
3643
3644 elif enabled avr32; then
3645
3646     case $cpu in
3647         ap7[02]0[0-2])
3648             subarch="avr32_ap"
3649             cpuflags="-mpart=$cpu"
3650         ;;
3651         ap)
3652             subarch="avr32_ap"
3653             cpuflags="-march=$cpu"
3654         ;;
3655         uc3[ab]*)
3656             subarch="avr32_uc"
3657             cpuflags="-mcpu=$cpu"
3658         ;;
3659         uc)
3660             subarch="avr32_uc"
3661             cpuflags="-march=$cpu"
3662         ;;
3663     esac
3664
3665 elif enabled bfin; then
3666
3667     cpuflags="-mcpu=$cpu"
3668
3669 elif enabled mips; then
3670
3671     cpuflags="-march=$cpu"
3672
3673     case $cpu in
3674         24kc)
3675             disable mipsfpu
3676             disable mipsdspr1
3677             disable mipsdspr2
3678         ;;
3679         24kf*)
3680             disable mipsdspr1
3681             disable mipsdspr2
3682         ;;
3683         24kec|34kc|1004kc)
3684             disable mipsfpu
3685             disable mipsdspr2
3686         ;;
3687         24kef*|34kf*|1004kf*)
3688             disable mipsdspr2
3689         ;;
3690         74kc)
3691             disable mipsfpu
3692         ;;
3693     esac
3694
3695 elif enabled ppc; then
3696
3697     disable ldbrx
3698     disable vsx
3699
3700     case $(tolower $cpu) in
3701         601|ppc601|powerpc601)
3702             cpuflags="-mcpu=601"
3703             disable altivec
3704         ;;
3705         603*|ppc603*|powerpc603*)
3706             cpuflags="-mcpu=603"
3707             disable altivec
3708         ;;
3709         604*|ppc604*|powerpc604*)
3710             cpuflags="-mcpu=604"
3711             disable altivec
3712         ;;
3713         g3|75*|ppc75*|powerpc75*)
3714             cpuflags="-mcpu=750"
3715             disable altivec
3716         ;;
3717         g4|745*|ppc745*|powerpc745*)
3718             cpuflags="-mcpu=7450"
3719         ;;
3720         74*|ppc74*|powerpc74*)
3721             cpuflags="-mcpu=7400"
3722         ;;
3723         g5|970|ppc970|powerpc970)
3724             cpuflags="-mcpu=970"
3725         ;;
3726         power[3-8]*)
3727             cpuflags="-mcpu=$cpu"
3728         ;;
3729         cell)
3730             cpuflags="-mcpu=cell"
3731             enable ldbrx
3732         ;;
3733         e500mc)
3734             cpuflags="-mcpu=e500mc"
3735             disable altivec
3736         ;;
3737         e500v2)
3738             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3739             disable altivec
3740             disable dcbzl
3741         ;;
3742         e500)
3743             cpuflags="-mcpu=8540 -mhard-float"
3744             disable altivec
3745             disable dcbzl
3746         ;;
3747     esac
3748
3749 elif enabled sparc; then
3750
3751     case $cpu in
3752         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3753             cpuflags="-mcpu=$cpu"
3754         ;;
3755         ultrasparc*|niagara[234])
3756             cpuflags="-mcpu=$cpu"
3757         ;;
3758     esac
3759
3760 elif enabled x86; then
3761
3762     case $cpu in
3763         i[345]86|pentium)
3764             cpuflags="-march=$cpu"
3765             disable mmx
3766         ;;
3767         # targets that do NOT support nopl and conditional mov (cmov)
3768         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3769             cpuflags="-march=$cpu"
3770             disable i686
3771         ;;
3772         # targets that do support nopl and conditional mov (cmov)
3773         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3774         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3775             cpuflags="-march=$cpu"
3776             enable i686
3777             enable fast_cmov
3778         ;;
3779         # targets that do support conditional mov but on which it's slow
3780         pentium4|pentium4m|prescott|nocona)
3781             cpuflags="-march=$cpu"
3782             enable i686
3783             disable fast_cmov
3784         ;;
3785     esac
3786
3787 fi
3788
3789 if [ "$cpu" != generic ]; then
3790     add_cflags  $cpuflags
3791     add_asflags $cpuflags
3792 fi
3793
3794 # compiler sanity check
3795 check_exec <<EOF
3796 int main(void){ return 0; }
3797 EOF
3798 if test "$?" != 0; then
3799     echo "$cc is unable to create an executable file."
3800     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3801         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3802         echo "Only do this if you know what cross compiling means."
3803     fi
3804     die "C compiler test failed."
3805 fi
3806
3807 add_cppflags -D_ISOC99_SOURCE
3808 add_cxxflags -D__STDC_CONSTANT_MACROS
3809 check_cflags -std=c99
3810 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3811 #include <stdlib.h>
3812 EOF
3813 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3814 #include <stdlib.h>
3815 EOF
3816
3817 add_host_cppflags -D_ISOC99_SOURCE
3818 check_host_cflags -std=c99
3819 check_host_cflags -Wall
3820 check_host_cflags -O3
3821
3822 check_64bit(){
3823     arch32=$1
3824     arch64=$2
3825     expr=$3
3826     check_code cc "" "int test[2*($expr) - 1]" &&
3827         subarch=$arch64 || subarch=$arch32
3828 }
3829
3830 case "$arch" in
3831     aarch64|alpha|ia64)
3832         spic=$shared
3833     ;;
3834     mips)
3835         check_64bit mips mips64 '_MIPS_SIM > 1'
3836         spic=$shared
3837     ;;
3838     parisc)
3839         check_64bit parisc parisc64 'sizeof(void *) > 4'
3840         spic=$shared
3841     ;;
3842     ppc)
3843         check_64bit ppc ppc64 'sizeof(void *) > 4'
3844         spic=$shared
3845     ;;
3846     s390)
3847         check_64bit s390 s390x 'sizeof(void *) > 4'
3848         spic=$shared
3849     ;;
3850     sparc)
3851         check_64bit sparc sparc64 'sizeof(void *) > 4'
3852         spic=$shared
3853     ;;
3854     x86)
3855         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3856         if test "$subarch" = "x86_64"; then
3857             spic=$shared
3858         fi
3859     ;;
3860     ppc)
3861         check_cc <<EOF && subarch="ppc64"
3862         int test[(int)sizeof(char*) - 7];
3863 EOF
3864     ;;
3865 esac
3866
3867 enable $subarch
3868 enabled spic && enable_weak pic
3869
3870 # OS specific
3871 case $target_os in
3872     aix)
3873         SHFLAGS=-shared
3874         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3875         enabled shared && add_ldflags -Wl,-brtl
3876         ;;
3877     android)
3878         disable symver
3879         SLIB_INSTALL_NAME='$(SLIBNAME)'
3880         SLIB_INSTALL_LINKS=
3881         # soname not set on purpose
3882         SHFLAGS=-shared
3883         ;;
3884     haiku)
3885         prefix_default="/boot/common"
3886         network_extralibs="-lnetwork"
3887         host_libs=
3888         ;;
3889     sunos)
3890         SHFLAGS='-shared -Wl,-h,$$(@F)'
3891         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3892         network_extralibs="-lsocket -lnsl"
3893         # When using suncc to build, the Solaris linker will mark
3894         # an executable with each instruction set encountered by
3895         # the Solaris assembler.  As our libraries contain their own
3896         # guards for processor-specific code, instead suppress
3897         # generation of the HWCAPS ELF section on Solaris x86 only.
3898         enabled_all suncc x86 &&
3899             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3900             add_ldflags -Wl,-M,mapfile
3901         nm_default='nm -P -g'
3902         ;;
3903     netbsd)
3904         disable symver
3905         oss_indev_extralibs="-lossaudio"
3906         oss_outdev_extralibs="-lossaudio"
3907         enabled gcc || check_ldflags -Wl,-zmuldefs
3908         ;;
3909     openbsd|bitrig)
3910         disable symver
3911         SHFLAGS='-shared'
3912         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3913         SLIB_INSTALL_LINKS=
3914         oss_indev_extralibs="-lossaudio"
3915         oss_outdev_extralibs="-lossaudio"
3916         ;;
3917     dragonfly)
3918         disable symver
3919         ;;
3920     freebsd)
3921         ;;
3922     bsd/os)
3923         add_extralibs -lpoll -lgnugetopt
3924         strip="strip -d"
3925         ;;
3926     darwin)
3927         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3928         enabled ppc && add_asflags -force_cpusubtype_ALL
3929         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3930         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3931         strip="${strip} -x"
3932         add_ldflags -Wl,-dynamic,-search_paths_first
3933         SLIBSUF=".dylib"
3934         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3935         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3936         objformat="macho"
3937         enabled x86_64 && objformat="macho64"
3938         enabled_any pic shared ||
3939             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3940         ;;
3941     mingw32*)
3942         if test $target_os = "mingw32ce"; then
3943             disable network
3944         else
3945             target_os=mingw32
3946         fi
3947         LIBTARGET=i386
3948         if enabled x86_64; then
3949             LIBTARGET="i386:x86-64"
3950         elif enabled arm; then
3951             LIBTARGET=arm-wince
3952         fi
3953         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3954         check_ldflags -Wl,--nxcompat
3955         check_ldflags -Wl,--dynamicbase
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         dlltool="${cross_prefix}dlltool"
3962         if check_cmd lib.exe -list; then
3963             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3964             if enabled x86_64; then
3965                 LIBTARGET=x64
3966             fi
3967         elif check_cmd $dlltool --version; then
3968             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3969         fi
3970         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3971         SLIB_INSTALL_LINKS=
3972         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3973         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3974         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3975         objformat="win32"
3976         ranlib=:
3977         enable dos_paths
3978         ;;
3979     win32|win64)
3980         disable symver
3981         if enabled shared; then
3982             # Link to the import library instead of the normal static library
3983             # for shared libs.
3984             LD_LIB='%.lib'
3985             # Cannot build both shared and static libs with MSVC or icl.
3986             disable static
3987         fi
3988         shlibdir_default="$bindir_default"
3989         SLIBPREF=""
3990         SLIBSUF=".dll"
3991         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3992         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3993         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3994         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3995         SLIB_INSTALL_LINKS=
3996         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3997         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3998         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3999         objformat="win32"
4000         ranlib=:
4001         enable dos_paths
4002         ;;
4003     cygwin*)
4004         target_os=cygwin
4005         shlibdir_default="$bindir_default"
4006         SLIBPREF="cyg"
4007         SLIBSUF=".dll"
4008         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4009         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4010         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4011         SLIB_INSTALL_LINKS=
4012         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4013         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4014         objformat="win32"
4015         enable dos_paths
4016         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4017         ;;
4018     *-dos|freedos|opendos)
4019         network_extralibs="-lsocket"
4020         objformat="coff"
4021         enable dos_paths
4022         add_cppflags -U__STRICT_ANSI__
4023         ;;
4024     linux)
4025         enable dv1394
4026         ;;
4027     irix*)
4028         target_os=irix
4029         ranlib="echo ignoring ranlib"
4030         ;;
4031     os/2*)
4032         strip="lxlite -CS"
4033         ln_s="cp -f"
4034         objformat="aout"
4035         add_cppflags -D_GNU_SOURCE
4036         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4037         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4038         LIBSUF="_s.a"
4039         SLIBPREF=""
4040         SLIBSUF=".dll"
4041         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4042         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4043         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4044             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4045             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4046             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4047             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4048             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4049         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4050             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4051         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4052         enable dos_paths
4053         enable_weak os2threads
4054         ;;
4055     gnu/kfreebsd)
4056         add_cppflags -D_BSD_SOURCE
4057         ;;
4058     gnu)
4059         ;;
4060     qnx)
4061         add_cppflags -D_QNX_SOURCE
4062         network_extralibs="-lsocket"
4063         ;;
4064     symbian)
4065         SLIBSUF=".dll"
4066         enable dos_paths
4067         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4068         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4069         add_ldflags -Wl,--target1-abs,--no-undefined \
4070                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4071                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4072         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4073                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4074                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4075         ;;
4076     osf1)
4077         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4078         ;;
4079     minix)
4080         ;;
4081     plan9)
4082         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4083                      -D_REENTRANT_SOURCE        \
4084                      -D_RESEARCH_SOURCE         \
4085                      -DFD_SETSIZE=96            \
4086                      -DHAVE_SOCK_OPTS
4087         add_compat strtod.o strtod=avpriv_strtod
4088         network_extralibs='-lbsd'
4089         exeobjs=compat/plan9/main.o
4090         disable ffserver
4091         cp_f='cp'
4092         ;;
4093     none)
4094         ;;
4095     *)
4096         die "Unknown OS '$target_os'."
4097         ;;
4098 esac
4099
4100 # determine libc flavour
4101
4102 probe_libc(){
4103     pfx=$1
4104     pfx_no_=${pfx%_}
4105     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4106     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4107         eval ${pfx}libc_type=uclibc
4108         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4109     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4110         eval ${pfx}libc_type=glibc
4111         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4112     # MinGW headers can be installed on Cygwin, so check for newlib first.
4113     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4114         eval ${pfx}libc_type=newlib
4115         add_${pfx}cppflags -U__STRICT_ANSI__
4116     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4117     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4118         eval ${pfx}libc_type=mingw64
4119         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4120             add_compat msvcrt/snprintf.o
4121             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4122         fi
4123         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4124         eval test \$${pfx_no_}cc_type = "gcc" &&
4125             add_${pfx}cppflags -D__printf__=__gnu_printf__
4126     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4127          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4128         eval ${pfx}libc_type=mingw32
4129         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4130             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4131             die "ERROR: MinGW32 runtime version must be >= 3.15."
4132         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4133         eval test \$${pfx_no_}cc_type = "gcc" &&
4134             add_${pfx}cppflags -D__printf__=__gnu_printf__
4135     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4136         eval ${pfx}libc_type=msvcrt
4137         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4138         # 0x601 by default unless something else is set by the user.
4139         # This can easily lead to us detecting functions only present
4140         # in such new versions and producing binaries requiring windows 7.0.
4141         # Therefore explicitly set the default to XP unless the user has
4142         # set something else on the command line.
4143         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4144             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4145     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4146         eval ${pfx}libc_type=klibc
4147     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4148         eval ${pfx}libc_type=bionic
4149     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4150         eval ${pfx}libc_type=solaris
4151         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4152     fi
4153 }
4154
4155 probe_libc
4156 test -n "$libc_type" && enable libc_$libc_type
4157 probe_libc host_
4158 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4159
4160 case $libc_type in
4161     bionic)
4162         add_compat strtod.o strtod=avpriv_strtod
4163         ;;
4164     msvcrt)
4165         add_compat strtod.o strtod=avpriv_strtod
4166         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4167                                      _snprintf=avpriv_snprintf  \
4168                                      vsnprintf=avpriv_vsnprintf
4169         ;;
4170 esac
4171
4172 # hacks for compiler/libc/os combinations
4173
4174 if enabled_all tms470 libc_glibc; then
4175     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4176     add_cppflags -D__USER_LABEL_PREFIX__=
4177     add_cppflags -D__builtin_memset=memset
4178     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4179     add_cflags   -pds=48    # incompatible redefinition of macro
4180 fi
4181
4182 if enabled_all ccc libc_glibc; then
4183     add_ldflags -Wl,-z,now  # calls to libots crash without this
4184 fi
4185
4186 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4187     add_cppflags '-I\$(SRC_PATH)/compat/float'
4188
4189 esc(){
4190     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4191 }
4192
4193 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4194
4195 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4196
4197 set_default $PATHS_LIST
4198 set_default nm
4199
4200 # we need to build at least one lib type
4201 if ! enabled_any static shared; then
4202     cat <<EOF
4203 At least one library type must be built.
4204 Specify --enable-static to build the static libraries or --enable-shared to
4205 build the shared libraries as well. To only build the shared libraries specify
4206 --disable-static in addition to --enable-shared.
4207 EOF
4208     exit 1;
4209 fi
4210
4211 die_license_disabled() {
4212     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4213 }
4214
4215 die_license_disabled_gpl() {
4216     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4217 }
4218
4219 die_license_disabled gpl frei0r
4220 die_license_disabled gpl libcdio
4221 die_license_disabled gpl libutvideo
4222 die_license_disabled gpl libvidstab
4223 die_license_disabled gpl libx264
4224 die_license_disabled gpl libx265
4225 die_license_disabled gpl libxavs
4226 die_license_disabled gpl libxvid
4227 die_license_disabled gpl libzvbi
4228 die_license_disabled gpl x11grab
4229
4230 die_license_disabled nonfree libaacplus
4231 die_license_disabled nonfree libfaac
4232 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4233 enabled gpl && die_license_disabled_gpl nonfree openssl
4234
4235 die_license_disabled version3 libopencore_amrnb
4236 die_license_disabled version3 libopencore_amrwb
4237 die_license_disabled version3 libvo_aacenc
4238 die_license_disabled version3 libvo_amrwbenc
4239
4240 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4241
4242 disabled optimizations || check_cflags -fomit-frame-pointer
4243
4244 enable_weak_pic() {
4245     disabled pic && return
4246     enable pic
4247     add_cppflags -DPIC
4248     case "$target_os" in
4249     mingw*|cygwin*)
4250         ;;
4251     *)
4252         add_cflags -fPIC
4253         ;;
4254     esac
4255     add_asflags  -fPIC
4256 }
4257
4258 enabled pic && enable_weak_pic
4259
4260 check_cc <<EOF || die "Symbol mangling check failed."
4261 int ff_extern;
4262 EOF
4263 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4264 extern_prefix=${sym%%ff_extern*}
4265
4266 check_cc <<EOF && enable_weak inline_asm
4267 void foo(void) { __asm__ volatile ("" ::); }
4268 EOF
4269
4270 _restrict=
4271 for restrict_keyword in restrict __restrict__ __restrict; do
4272     check_cc <<EOF && _restrict=$restrict_keyword && break
4273 void foo(char * $restrict_keyword p);
4274 EOF
4275 done
4276
4277 check_cc <<EOF && enable pragma_deprecated
4278 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4279 EOF
4280
4281 check_cc <<EOF && enable attribute_packed
4282 struct { int x; } __attribute__((packed)) x;
4283 EOF
4284
4285 check_cc <<EOF && enable attribute_may_alias
4286 union { int x; } __attribute__((may_alias)) x;
4287 EOF
4288
4289 check_cc <<EOF || die "endian test failed"
4290 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4291 EOF
4292 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4293
4294 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] ;then
4295     if ! enabled bigendian ;then
4296         enable vsx
4297     fi
4298 fi
4299
4300
4301 if enabled asm; then
4302     enabled     arm         && nogas=die
4303     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4304     as=${gas:=$as}
4305     check_as <<EOF && enable gnu_as || \
4306         $nogas "GNU assembler not found, install gas-preprocessor"
4307 .macro m n
4308 \n: .int 0
4309 .endm
4310 m x
4311 EOF
4312
4313     check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
4314 .altmacro
4315 EOF
4316
4317     check_as <<EOF && enable as_func
4318 .func test
4319 .endfunc
4320 EOF
4321 fi
4322
4323 check_inline_asm inline_asm_labels '"1:\n"'
4324
4325 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4326
4327 if enabled aarch64; then
4328     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4329     # internal assembler in clang 3.3 does not support this instruction
4330     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4331     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4332
4333     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4334
4335 elif enabled alpha; then
4336
4337     check_cflags -mieee
4338
4339 elif enabled arm; then
4340
4341     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4342 float func(float a, float b){ return a+b; }
4343 EOF
4344
4345     enabled thumb && check_cflags -mthumb || check_cflags -marm
4346
4347     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4348         enable vfp_args
4349     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4350         case "${cross_prefix:-$cc}" in
4351             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4352             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4353 __asm__ (".eabi_attribute 28, 1");
4354 int main(void) { return 0; }
4355 EOF
4356         esac
4357         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4358     fi
4359
4360     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4361     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4362     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4363     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4364     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4365     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4366
4367     [ $target_os = linux ] ||
4368         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4369             $ARCH_EXT_LIST_ARM
4370
4371     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4372
4373     check_as <<EOF && enable as_dn_directive
4374 ra .dn d0.i16
4375 .unreq ra
4376 EOF
4377
4378     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4379
4380 elif enabled mips; then
4381
4382     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4383     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4384      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4385     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4386      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4387     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4388      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4389     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4390      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4391
4392 elif enabled parisc; then
4393
4394     if enabled gcc; then
4395         case $($cc -dumpversion) in
4396             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4397         esac
4398     fi
4399
4400 elif enabled ppc; then
4401
4402     enable local_aligned_8 local_aligned_16 local_aligned_32
4403
4404     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4405     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4406     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4407     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4408
4409     # AltiVec flags: The FSF version of GCC differs from the Apple version
4410     if enabled altivec; then
4411         check_cflags -maltivec -mabi=altivec &&
4412         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4413         check_cflags -faltivec
4414
4415         # check if our compiler supports Motorola AltiVec C API
4416         check_cc <<EOF || disable altivec
4417 $inc_altivec_h
4418 int main(void) {
4419     vector signed int v1 = (vector signed int) { 0 };
4420     vector signed int v2 = (vector signed int) { 1 };
4421     v1 = vec_add(v1, v2);
4422     return 0;
4423 }
4424 EOF
4425
4426         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4427     fi
4428
4429     if enabled vsx; then
4430         check_cflags -mvsx
4431     fi
4432 elif enabled x86; then
4433
4434     check_builtin rdtsc    intrin.h   "__rdtsc()"
4435     check_builtin mm_empty mmintrin.h "_mm_empty()"
4436
4437     enable local_aligned_8 local_aligned_16 local_aligned_32
4438
4439     # check whether EBP is available on x86
4440     # As 'i' is stored on the stack, this program will crash
4441     # if the base pointer is used to access it because the
4442     # base pointer is cleared in the inline assembly code.
4443     check_exec_crash <<EOF && enable ebp_available
4444 volatile int i=0;
4445 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4446 return i;
4447 EOF
4448
4449     # check whether EBX is available on x86
4450     check_inline_asm ebx_available '""::"b"(0)' &&
4451         check_inline_asm ebx_available '"":::"%ebx"'
4452
4453     # check whether xmm clobbers are supported
4454     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4455
4456     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4457         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4458
4459     # check whether binutils is new enough to compile AVX/SSSE3/MMXEXT
4460     enabled avx    && check_inline_asm avx_inline    '"vextractf128 $1, %ymm0, %xmm1"'
4461     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4462     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4463
4464     if ! disabled_any asm mmx yasm; then
4465         if check_cmd $yasmexe --version; then
4466             enabled x86_64 && yasm_extra="-m amd64"
4467             yasm_debug="-g dwarf2"
4468         elif check_cmd nasm -v; then
4469             yasmexe=nasm
4470             yasm_debug="-g -F dwarf"
4471             if enabled x86_64; then
4472                 case "$objformat" in
4473                     elf)   objformat=elf64 ;;
4474                     win32) objformat=win64 ;;
4475                 esac
4476             fi
4477         fi
4478
4479         YASMFLAGS="-f $objformat $yasm_extra"
4480         enabled pic               && append YASMFLAGS "-DPIC"
4481         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4482         case "$objformat" in
4483             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4484         esac
4485
4486         check_yasm "movbe ecx, [5]" && enable yasm ||
4487             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4488         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4489         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4490         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4491         check_yasm "CPU amdnop" || disable cpunop
4492     fi
4493
4494     case "$cpu" in
4495         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4496             disable fast_clz
4497         ;;
4498     esac
4499
4500 fi
4501
4502 check_ldflags -Wl,--as-needed
4503
4504 if check_func dlopen; then
4505     ldl=
4506 elif check_func dlopen -ldl; then
4507     ldl=-ldl
4508 fi
4509
4510 if ! disabled network; then
4511     check_func getaddrinfo $network_extralibs
4512     check_func getservbyport $network_extralibs
4513     check_func inet_aton $network_extralibs
4514
4515     check_type netdb.h "struct addrinfo"
4516     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4517     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4518     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4519     check_type poll.h "struct pollfd"
4520     check_type netinet/sctp.h "struct sctp_event_subscribe"
4521     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4522     check_type netinet/in.h "struct sockaddr_in6"
4523     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4524     check_type "sys/types.h sys/socket.h" socklen_t
4525
4526     # Prefer arpa/inet.h over winsock2
4527     if check_header arpa/inet.h ; then
4528         check_func closesocket
4529     elif check_header winsock2.h ; then
4530         check_func_headers winsock2.h closesocket -lws2 &&
4531             network_extralibs="-lws2" ||
4532         { check_func_headers winsock2.h closesocket -lws2_32 &&
4533             network_extralibs="-lws2_32"; } || disable winsock2_h network
4534         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4535
4536         check_type ws2tcpip.h socklen_t
4537         check_type ws2tcpip.h "struct addrinfo"
4538         check_type ws2tcpip.h "struct group_source_req"
4539         check_type ws2tcpip.h "struct ip_mreq_source"
4540         check_type ws2tcpip.h "struct ipv6_mreq"
4541         check_type winsock2.h "struct pollfd"
4542         check_struct winsock2.h "struct sockaddr" sa_len
4543         check_type ws2tcpip.h "struct sockaddr_in6"
4544         check_type ws2tcpip.h "struct sockaddr_storage"
4545     else
4546         disable network
4547     fi
4548 fi
4549
4550 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4551 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4552 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4553 check_builtin sarestart signal.h "SA_RESTART"
4554 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4555
4556 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4557 check_func  ${malloc_prefix}memalign            && enable memalign
4558 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4559
4560 check_func  access
4561 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4562 check_func  fcntl
4563 check_func  fork
4564 check_func  gethrtime
4565 check_func  getopt
4566 check_func  getrusage
4567 check_func  gettimeofday
4568 check_func  isatty
4569 check_func  localtime_r
4570 check_func  mach_absolute_time
4571 check_func  mkstemp
4572 check_func  mmap
4573 check_func  mprotect
4574 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4575 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4576 check_func  sched_getaffinity
4577 check_func  setrlimit
4578 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4579 check_func  strerror_r
4580 check_func  sysconf
4581 check_func  sysctl
4582 check_func  usleep
4583
4584 check_func_headers conio.h kbhit
4585 check_func_headers io.h setmode
4586 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4587 check_func_headers stdlib.h getenv
4588
4589 check_func_headers windows.h CoTaskMemFree -lole32
4590 check_func_headers windows.h GetProcessAffinityMask
4591 check_func_headers windows.h GetProcessTimes
4592 check_func_headers windows.h GetSystemTimeAsFileTime
4593 check_func_headers windows.h MapViewOfFile
4594 check_func_headers windows.h PeekNamedPipe
4595 check_func_headers windows.h SetConsoleTextAttribute
4596 check_func_headers windows.h Sleep
4597 check_func_headers windows.h VirtualAlloc
4598 check_func_headers glob.h glob
4599 enabled xlib &&
4600     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4601
4602 check_header cl/cl.h
4603 check_header direct.h
4604 check_header dlfcn.h
4605 check_header dxva.h
4606 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4607 check_header io.h
4608 check_header libcrystalhd/libcrystalhd_if.h
4609 check_header mach/mach_time.h
4610 check_header malloc.h
4611 check_header poll.h
4612 check_header sys/mman.h
4613 check_header sys/param.h
4614 check_header sys/resource.h
4615 check_header sys/select.h
4616 check_header sys/time.h
4617 check_header sys/un.h
4618 check_header termios.h
4619 check_header unistd.h
4620 check_header vdpau/vdpau.h
4621 check_header vdpau/vdpau_x11.h
4622 check_header VideoDecodeAcceleration/VDADecoder.h
4623 check_header windows.h
4624 check_header X11/extensions/XvMClib.h
4625 check_header asm/types.h
4626
4627 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4628 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4629 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4630
4631 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4632
4633 if ! disabled w32threads && ! enabled pthreads; then
4634     check_func_headers "windows.h process.h" _beginthreadex &&
4635         enable w32threads || disable w32threads
4636 fi
4637
4638 # check for some common methods of building with pthread support
4639 # do this before the optional library checks as some of them require pthreads
4640 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4641     enable pthreads
4642     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4643         add_cflags -pthread
4644         add_extralibs -pthread
4645     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4646         add_cflags -pthreads
4647         add_extralibs -pthreads
4648     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4649         add_cflags -ldl -pthread
4650         add_extralibs -ldl -pthread
4651     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4652         add_extralibs -lpthreadGC2
4653     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4654         :
4655     elif ! check_func pthread_join && ! check_func pthread_create; then
4656         disable pthreads
4657     fi
4658     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4659 fi
4660
4661
4662 if enabled pthreads; then
4663   check_func pthread_cancel
4664 fi
4665
4666 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4667 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4668
4669 check_lib math.h sin -lm && LIBM="-lm"
4670 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4671
4672 atan2f_args=2
4673 ldexpf_args=2
4674 powf_args=2
4675 fminf_args=2
4676
4677 for func in $MATH_FUNCS; do
4678     eval check_mathfunc $func \${${func}_args:-1}
4679 done
4680
4681 # these are off by default, so fail if requested and not available
4682 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4683 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4684                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4685                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4686 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4687 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4688 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4689 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4690 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4691 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4692 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4693 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4694 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4695 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4696                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4697                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4698 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4699 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4700 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4701 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"
4702 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4703 enabled fontconfig        && enable libfontconfig
4704 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4705 enabled libfreetype       && require_libfreetype
4706 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4707 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4708                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4709                                done || die "ERROR: libgsm not found"; }
4710 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4711 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4712 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4713 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4714 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4715 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4716 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4717 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4718                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4719                                die "ERROR: libopenjpeg not found"; }
4720 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4721 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4722 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4723 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4724 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4725 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4726 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4727 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4728 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4729 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4730     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4731     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4732 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4733 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4734                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4735                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4736 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4737 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4738 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4739 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4740 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4741 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4742 enabled libvpx            && {
4743     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4744                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4745     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 ||
4746                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4747     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4748     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; } }
4749 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4750 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4751 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4752                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4753                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4754 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4755                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4756                                die "ERROR: libx265 version must be >= 17."; }
4757 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4758 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4759 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4760 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4761 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4762                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4763                                die "ERROR: openal not found"; } &&
4764                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4765                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4766 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4767                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4768                                die "ERROR: opencl not found"; } &&
4769                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4770                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4771                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4772 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4773                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4774                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4775                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4776                                die "ERROR: opengl not found."
4777