Merge commit '9a9e2f1c8aa4539a261625145e5c1f46a8106ac2'
[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 assembler optimizations
320   --disable-altivec        disable AltiVec optimizations
321   --disable-amd3dnow       disable 3DNow! optimizations
322   --disable-amd3dnowext    disable 3DNow! extended optimizations
323   --disable-mmx            disable MMX optimizations
324   --disable-mmxext         disable MMXEXT optimizations
325   --disable-sse            disable SSE optimizations
326   --disable-sse2           disable SSE2 optimizations
327   --disable-sse3           disable SSE3 optimizations
328   --disable-ssse3          disable SSSE3 optimizations
329   --disable-sse4           disable SSE4 optimizations
330   --disable-sse42          disable SSE4.2 optimizations
331   --disable-avx            disable AVX optimizations
332   --disable-xop            disable XOP optimizations
333   --disable-fma3           disable FMA3 optimizations
334   --disable-fma4           disable FMA4 optimizations
335   --disable-avx2           disable AVX2 optimizations
336   --disable-armv5te        disable armv5te optimizations
337   --disable-armv6          disable armv6 optimizations
338   --disable-armv6t2        disable armv6t2 optimizations
339   --disable-vfp            disable VFP optimizations
340   --disable-neon           disable NEON optimizations
341   --disable-inline-asm     disable use of inline assembler
342   --disable-yasm           disable use of yasm assembler
343   --disable-mips32r2       disable MIPS32R2 optimizations
344   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
345   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
346   --disable-mipsfpu        disable floating point MIPS optimizations
347   --disable-fast-unaligned consider unaligned accesses slow
348
349 Developer options (useful when working on FFmpeg itself):
350   --disable-debug          disable debugging symbols
351   --enable-debug=LEVEL     set the debug level [$debuglevel]
352   --disable-optimizations  disable compiler optimizations
353   --enable-extra-warnings  enable more compiler warnings
354   --disable-stripping      disable stripping of executables and shared libraries
355   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
356                            2 causes a slowdown at runtime.
357   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
358   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
359                            leaks and errors, using the specified valgrind binary.
360                            Cannot be combined with --target-exec
361   --enable-ftrapv          Trap arithmetic overflows
362   --samples=PATH           location of test samples for FATE, if not set use
363                            \$FATE_SAMPLES at make invocation time.
364   --enable-neon-clobber-test check NEON registers for clobbering (should be
365                            used only for debugging purposes)
366   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
367                            should be used only for debugging purposes)
368   --enable-random          randomly enable/disable components
369   --disable-random
370   --enable-random=LIST     randomly enable/disable specific components or
371   --disable-random=LIST    component groups. LIST is a comma-separated list
372                            of NAME[:PROB] entries where NAME is a component
373                            (group) and PROB the probability associated with
374                            NAME (default 0.5).
375   --random-seed=VALUE      seed value for --enable/disable-random
376
377 NOTE: Object files are built at the place where configure is launched.
378 EOF
379   exit 0
380 }
381
382 quotes='""'
383
384 log(){
385     echo "$@" >> $logfile
386 }
387
388 log_file(){
389     log BEGIN $1
390     pr -n -t $1 >> $logfile
391     log END $1
392 }
393
394 echolog(){
395     log "$@"
396     echo "$@"
397 }
398
399 warn(){
400     log "WARNING: $*"
401     WARNINGS="${WARNINGS}WARNING: $*\n"
402 }
403
404 die(){
405     echolog "$@"
406     cat <<EOF
407
408 If you think configure made a mistake, make sure you are using the latest
409 version from Git.  If the latest version fails, report the problem to the
410 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
411 EOF
412     if disabled logging; then
413         cat <<EOF
414 Rerun configure with logging enabled (do not use --disable-logging), and
415 include the log this produces with your report.
416 EOF
417     else
418         cat <<EOF
419 Include the log file "$logfile" produced by configure as this will help
420 solve the problem.
421 EOF
422     fi
423     exit 1
424 }
425
426 # Avoid locale weirdness, besides we really just want to translate ASCII.
427 toupper(){
428     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
429 }
430
431 tolower(){
432     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
433 }
434
435 c_escape(){
436     echo "$*" | sed 's/["\\]/\\\0/g'
437 }
438
439 sh_quote(){
440     v=$(echo "$1" | sed "s/'/'\\\\''/g")
441     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
442     echo "$v"
443 }
444
445 cleanws(){
446     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
447 }
448
449 filter(){
450     pat=$1
451     shift
452     for v; do
453         eval "case $v in $pat) echo $v ;; esac"
454     done
455 }
456
457 filter_out(){
458     pat=$1
459     shift
460     for v; do
461         eval "case $v in $pat) ;; *) echo $v ;; esac"
462     done
463 }
464
465 map(){
466     m=$1
467     shift
468     for v; do eval $m; done
469 }
470
471 add_suffix(){
472     suffix=$1
473     shift
474     for v; do echo ${v}${suffix}; done
475 }
476
477 set_all(){
478     value=$1
479     shift
480     for var in $*; do
481         eval $var=$value
482     done
483 }
484
485 set_weak(){
486     value=$1
487     shift
488     for var; do
489         eval : \${$var:=$value}
490     done
491 }
492
493 sanitize_var_name(){
494     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
495 }
496
497 set_safe(){
498     var=$1
499     shift
500     eval $(sanitize_var_name "$var")='$*'
501 }
502
503 get_safe(){
504     eval echo \$$(sanitize_var_name "$1")
505 }
506
507 pushvar(){
508     for pvar in $*; do
509         eval level=\${${pvar}_level:=0}
510         eval ${pvar}_${level}="\$$pvar"
511         eval ${pvar}_level=$(($level+1))
512     done
513 }
514
515 popvar(){
516     for pvar in $*; do
517         eval level=\${${pvar}_level:-0}
518         test $level = 0 && continue
519         eval level=$(($level-1))
520         eval $pvar="\${${pvar}_${level}}"
521         eval ${pvar}_level=$level
522         eval unset ${pvar}_${level}
523     done
524 }
525
526 enable(){
527     set_all yes $*
528 }
529
530 disable(){
531     set_all no $*
532 }
533
534 enable_weak(){
535     set_weak yes $*
536 }
537
538 disable_weak(){
539     set_weak no $*
540 }
541
542 enable_safe(){
543     for var; do
544         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
545     done
546 }
547
548 disable_safe(){
549     for var; do
550         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
551     done
552 }
553
554 do_enable_deep(){
555     for var; do
556         enabled $var && continue
557         eval sel="\$${var}_select"
558         eval sgs="\$${var}_suggest"
559         pushvar var sgs
560         enable_deep $sel
561         popvar sgs
562         enable_deep_weak $sgs
563         popvar var
564     done
565 }
566
567 enable_deep(){
568     do_enable_deep $*
569     enable $*
570 }
571
572 enable_deep_weak(){
573     for var; do
574         disabled $var && continue
575         pushvar var
576         do_enable_deep $var
577         popvar var
578         enable_weak $var
579     done
580 }
581
582 enabled(){
583     test "${1#!}" = "$1" && op== || op=!=
584     eval test "x\$${1#!}" $op "xyes"
585 }
586
587 disabled(){
588     test "${1#!}" = "$1" && op== || op=!=
589     eval test "x\$${1#!}" $op "xno"
590 }
591
592 enabled_all(){
593     for opt; do
594         enabled $opt || return 1
595     done
596 }
597
598 disabled_all(){
599     for opt; do
600         disabled $opt || return 1
601     done
602 }
603
604 enabled_any(){
605     for opt; do
606         enabled $opt && return 0
607     done
608 }
609
610 disabled_any(){
611     for opt; do
612         disabled $opt && return 0
613     done
614     return 1
615 }
616
617 set_default(){
618     for opt; do
619         eval : \${$opt:=\$${opt}_default}
620     done
621 }
622
623 is_in(){
624     value=$1
625     shift
626     for var in $*; do
627         [ $var = $value ] && return 0
628     done
629     return 1
630 }
631
632 do_check_deps(){
633     for cfg; do
634         cfg="${cfg#!}"
635         enabled ${cfg}_checking && die "Circular dependency for $cfg."
636         disabled ${cfg}_checking && continue
637         enable ${cfg}_checking
638         append allopts $cfg
639
640         eval dep_all="\$${cfg}_deps"
641         eval dep_any="\$${cfg}_deps_any"
642         eval dep_sel="\$${cfg}_select"
643         eval dep_sgs="\$${cfg}_suggest"
644         eval dep_ifa="\$${cfg}_if"
645         eval dep_ifn="\$${cfg}_if_any"
646
647         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
648         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
649         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
650
651         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
652         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
653         enabled_all  $dep_all || disable $cfg
654         enabled_any  $dep_any || disable $cfg
655         disabled_any $dep_sel && disable $cfg
656
657         if enabled $cfg; then
658             enable_deep $dep_sel
659             enable_deep_weak $dep_sgs
660         fi
661
662         disable ${cfg}_checking
663     done
664 }
665
666 check_deps(){
667     unset allopts
668
669     do_check_deps "$@"
670
671     for cfg in $allopts; do
672         enabled $cfg || continue
673         eval dep_extralibs="\$${cfg}_extralibs"
674         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
675     done
676 }
677
678 print_config(){
679     pfx=$1
680     files=$2
681     shift 2
682     map 'eval echo "$v \${$v:-no}"' "$@" |
683     awk "BEGIN { split(\"$files\", files) }
684         {
685             c = \"$pfx\" toupper(\$1);
686             v = \$2;
687             sub(/yes/, 1, v);
688             sub(/no/,  0, v);
689             for (f in files) {
690                 file = files[f];
691                 if (file ~ /\\.h\$/) {
692                     printf(\"#define %s %d\\n\", c, v) >>file;
693                 } else if (file ~ /\\.asm\$/) {
694                     printf(\"%%define %s %d\\n\", c, v) >>file;
695                 } else if (file ~ /\\.mak\$/) {
696                     n = -v ? \"\" : \"!\";
697                     printf(\"%s%s=yes\\n\", n, c) >>file;
698                 } else if (file ~ /\\.texi\$/) {
699                     pre = -v ? \"\" : \"@c \";
700                     yesno = \$2;
701                     c2 = tolower(c);
702                     gsub(/_/, \"-\", c2);
703                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
704                 }
705             }
706         }"
707 }
708
709 print_enabled(){
710     suf=$1
711     shift
712     for v; do
713         enabled $v && printf "%s\n" ${v%$suf};
714     done
715 }
716
717 append(){
718     var=$1
719     shift
720     eval "$var=\"\$$var $*\""
721 }
722
723 prepend(){
724     var=$1
725     shift
726     eval "$var=\"$* \$$var\""
727 }
728
729 unique(){
730     var=$1
731     uniq_list=""
732     for tok in $(eval echo \$$var); do
733         uniq_list="$(filter_out $tok $uniq_list) $tok"
734     done
735     eval "$var=\"${uniq_list}\""
736 }
737
738 add_cppflags(){
739     append CPPFLAGS "$@"
740 }
741
742 add_cflags(){
743     append CFLAGS $($cflags_filter "$@")
744 }
745
746 add_cxxflags(){
747     append CXXFLAGS $($cflags_filter "$@")
748 }
749
750 add_asflags(){
751     append ASFLAGS $($asflags_filter "$@")
752 }
753
754 add_ldflags(){
755     append LDFLAGS $($ldflags_filter "$@")
756 }
757
758 add_stripflags(){
759     append ASMSTRIPFLAGS "$@"
760 }
761
762 add_extralibs(){
763     prepend extralibs $($ldflags_filter "$@")
764 }
765
766 add_host_cppflags(){
767     append host_cppflags "$@"
768 }
769
770 add_host_cflags(){
771     append host_cflags $($host_cflags_filter "$@")
772 }
773
774 add_host_ldflags(){
775     append host_ldflags $($host_ldflags_filter "$@")
776 }
777
778 add_compat(){
779     append compat_objs $1
780     shift
781     map 'add_cppflags -D$v' "$@"
782 }
783
784 check_cmd(){
785     log "$@"
786     "$@" >> $logfile 2>&1
787 }
788
789 check_stat(){
790     log check_stat "$@"
791     stat "$1" >> $logfile 2>&1
792 }
793
794 cc_o(){
795     eval printf '%s\\n' $CC_O
796 }
797
798 cc_e(){
799     eval printf '%s\\n' $CC_E
800 }
801
802 check_cc(){
803     log check_cc "$@"
804     cat > $TMPC
805     log_file $TMPC
806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
807 }
808
809 check_cxx(){
810     log check_cxx "$@"
811     cat > $TMPCPP
812     log_file $TMPCPP
813     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
814 }
815
816 check_oc(){
817     log check_oc "$@"
818     cat > $TMPM
819     log_file $TMPM
820     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
821 }
822
823 check_cpp(){
824     log check_cpp "$@"
825     cat > $TMPC
826     log_file $TMPC
827     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
828 }
829
830 as_o(){
831     eval printf '%s\\n' $AS_O
832 }
833
834 check_as(){
835     log check_as "$@"
836     cat > $TMPS
837     log_file $TMPS
838     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
839 }
840
841 check_inline_asm(){
842     log check_inline_asm "$@"
843     name="$1"
844     code="$2"
845     shift 2
846     disable $name
847     check_cc "$@" <<EOF && enable $name
848 void foo(void){ __asm__ volatile($code); }
849 EOF
850 }
851
852 check_insn(){
853     log check_insn "$@"
854     check_inline_asm ${1}_inline "\"$2\""
855     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
856 }
857
858 check_yasm(){
859     log check_yasm "$@"
860     echo "$1" > $TMPS
861     log_file $TMPS
862     shift 1
863     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
864 }
865
866 ld_o(){
867     eval printf '%s\\n' $LD_O
868 }
869
870 check_ld(){
871     log check_ld "$@"
872     type=$1
873     shift 1
874     flags=$(filter_out '-l*|*.so' $@)
875     libs=$(filter '-l*|*.so' $@)
876     check_$type $($cflags_filter $flags) || return
877     flags=$($ldflags_filter $flags)
878     libs=$($ldflags_filter $libs)
879     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
880 }
881
882 print_include(){
883     hdr=$1
884     test "${hdr%.h}" = "${hdr}" &&
885         echo "#include $hdr"    ||
886         echo "#include <$hdr>"
887 }
888
889 check_code(){
890     log check_code "$@"
891     check=$1
892     headers=$2
893     code=$3
894     shift 3
895     {
896         for hdr in $headers; do
897             print_include $hdr
898         done
899         echo "int main(void) { $code; return 0; }"
900     } | check_$check "$@"
901 }
902
903 check_cppflags(){
904     log check_cppflags "$@"
905     check_cc "$@" <<EOF && append CPPFLAGS "$@"
906 int x;
907 EOF
908 }
909
910 test_cflags(){
911     log test_cflags "$@"
912     set -- $($cflags_filter "$@")
913     check_cc "$@" <<EOF
914 int x;
915 EOF
916 }
917
918 check_cflags(){
919     log check_cflags "$@"
920     test_cflags "$@" && add_cflags "$@"
921 }
922
923 check_cxxflags(){
924     log check_cxxflags "$@"
925     set -- $($cflags_filter "$@")
926     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
927 int x;
928 EOF
929 }
930
931 test_ldflags(){
932     log test_ldflags "$@"
933     check_ld "cc" "$@" <<EOF
934 int main(void){ return 0; }
935 EOF
936 }
937
938 check_ldflags(){
939     log check_ldflags "$@"
940     test_ldflags "$@" && add_ldflags "$@"
941 }
942
943 test_stripflags(){
944     log test_stripflags "$@"
945     # call check_cc to get a fresh TMPO
946     check_cc <<EOF
947 int main(void) { return 0; }
948 EOF
949     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
950 }
951
952 check_stripflags(){
953     log check_stripflags "$@"
954     test_stripflags "$@" && add_stripflags "$@"
955 }
956
957 check_header(){
958     log check_header "$@"
959     header=$1
960     shift
961     disable_safe $header
962     check_cpp "$@" <<EOF && enable_safe $header
963 #include <$header>
964 int x;
965 EOF
966 }
967
968 check_header_oc(){
969     log check_header_oc "$@"
970     rm -f -- "$TMPO"
971     header=$1
972     shift
973     disable_safe $header
974     {
975        echo "#include <$header>"
976        echo "int main(void) { return 0; }"
977     } | check_oc && check_stat "$TMPO" && enable_safe $headers
978 }
979
980 check_func(){
981     log check_func "$@"
982     func=$1
983     shift
984     disable $func
985     check_ld "cc" "$@" <<EOF && enable $func
986 extern int $func();
987 int main(void){ $func(); }
988 EOF
989 }
990
991 check_mathfunc(){
992     log check_mathfunc "$@"
993     func=$1
994     narg=$2
995     shift 2
996     test $narg = 2 && args="f, g" || args="f"
997     disable $func
998     check_ld "cc" "$@" <<EOF && enable $func
999 #include <math.h>
1000 float foo(float f, float g) { return $func($args); }
1001 int main(void){ return (int) foo; }
1002 EOF
1003 }
1004
1005 check_func_headers(){
1006     log check_func_headers "$@"
1007     headers=$1
1008     funcs=$2
1009     shift 2
1010     {
1011         for hdr in $headers; do
1012             print_include $hdr
1013         done
1014         for func in $funcs; do
1015             echo "long check_$func(void) { return (long) $func; }"
1016         done
1017         echo "int main(void) { return 0; }"
1018     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1019 }
1020
1021 check_class_headers_cpp(){
1022     log check_class_headers_cpp "$@"
1023     headers=$1
1024     classes=$2
1025     shift 2
1026     {
1027         for hdr in $headers; do
1028             echo "#include <$hdr>"
1029         done
1030         echo "int main(void) { "
1031         i=1
1032         for class in $classes; do
1033             echo "$class obj$i;"
1034             i=$(expr $i + 1)
1035         done
1036         echo "return 0; }"
1037     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1038 }
1039
1040 check_cpp_condition(){
1041     log check_cpp_condition "$@"
1042     header=$1
1043     condition=$2
1044     shift 2
1045     check_cpp "$@" <<EOF
1046 #include <$header>
1047 #if !($condition)
1048 #error "unsatisfied condition: $condition"
1049 #endif
1050 EOF
1051 }
1052
1053 check_lib(){
1054     log check_lib "$@"
1055     header="$1"
1056     func="$2"
1057     shift 2
1058     check_header $header && check_func $func "$@" && add_extralibs "$@"
1059 }
1060
1061 check_lib2(){
1062     log check_lib2 "$@"
1063     headers="$1"
1064     funcs="$2"
1065     shift 2
1066     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1067 }
1068
1069 check_lib_cpp(){
1070     log check_lib_cpp "$@"
1071     headers="$1"
1072     classes="$2"
1073     shift 2
1074     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1075 }
1076
1077 check_pkg_config(){
1078     log check_pkg_config "$@"
1079     pkgandversion="$1"
1080     pkg="${1%% *}"
1081     headers="$2"
1082     funcs="$3"
1083     shift 3
1084     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1085     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1086     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1087     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1088         set_safe ${pkg}_cflags $pkg_cflags   &&
1089         set_safe ${pkg}_libs   $pkg_libs
1090 }
1091
1092 check_exec(){
1093     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1094 }
1095
1096 check_exec_crash(){
1097     code=$(cat)
1098
1099     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1100     # are safe but may not be available everywhere.  Thus we use
1101     # raise(SIGTERM) instead.  The check is run in a subshell so we
1102     # can redirect the "Terminated" message from the shell.  SIGBUS
1103     # is not defined by standard C so it is used conditionally.
1104
1105     (check_exec "$@") >> $logfile 2>&1 <<EOF
1106 #include <signal.h>
1107 static void sighandler(int sig){
1108     raise(SIGTERM);
1109 }
1110 int foo(void){
1111     $code
1112 }
1113 int (*func_ptr)(void) = foo;
1114 int main(void){
1115     signal(SIGILL, sighandler);
1116     signal(SIGFPE, sighandler);
1117     signal(SIGSEGV, sighandler);
1118 #ifdef SIGBUS
1119     signal(SIGBUS, sighandler);
1120 #endif
1121     return func_ptr();
1122 }
1123 EOF
1124 }
1125
1126 check_type(){
1127     log check_type "$@"
1128     headers=$1
1129     type=$2
1130     shift 2
1131     disable_safe "$type"
1132     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1133 }
1134
1135 check_struct(){
1136     log check_struct "$@"
1137     headers=$1
1138     struct=$2
1139     member=$3
1140     shift 3
1141     disable_safe "${struct}_${member}"
1142     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1143         enable_safe "${struct}_${member}"
1144 }
1145
1146 check_builtin(){
1147     log check_builtin "$@"
1148     name=$1
1149     headers=$2
1150     builtin=$3
1151     shift 3
1152     disable "$name"
1153     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1154 }
1155
1156 check_compile_assert(){
1157     log check_compile_assert "$@"
1158     name=$1
1159     headers=$2
1160     condition=$3
1161     shift 3
1162     disable "$name"
1163     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1164 }
1165
1166 require(){
1167     name="$1"
1168     header="$2"
1169     func="$3"
1170     shift 3
1171     check_lib $header $func "$@" || die "ERROR: $name not found"
1172 }
1173
1174 require2(){
1175     name="$1"
1176     headers="$2"
1177     func="$3"
1178     shift 3
1179     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1180 }
1181
1182 require_cpp(){
1183     name="$1"
1184     headers="$2"
1185     classes="$3"
1186     shift 3
1187     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require_pkg_config(){
1191     pkg="$1"
1192     check_pkg_config "$@" || die "ERROR: $pkg not found"
1193     add_cflags    $(get_safe ${pkg}_cflags)
1194     add_extralibs $(get_safe ${pkg}_libs)
1195 }
1196
1197 require_libfreetype(){
1198     log require_libfreetype "$@"
1199     pkg="freetype2"
1200     check_cmd $pkg_config --exists --print-errors $pkg \
1201       || die "ERROR: $pkg not found"
1202     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1203     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1204     {
1205         echo "#include <ft2build.h>"
1206         echo "#include FT_FREETYPE_H"
1207         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1208         echo "int main(void) { return 0; }"
1209     } | check_ld "cc" $pkg_cflags $pkg_libs \
1210       && set_safe ${pkg}_cflags $pkg_cflags \
1211       && set_safe ${pkg}_libs   $pkg_libs \
1212       || die "ERROR: $pkg not found"
1213     add_cflags    $(get_safe ${pkg}_cflags)
1214     add_extralibs $(get_safe ${pkg}_libs)
1215 }
1216
1217 hostcc_e(){
1218     eval printf '%s\\n' $HOSTCC_E
1219 }
1220
1221 hostcc_o(){
1222     eval printf '%s\\n' $HOSTCC_O
1223 }
1224
1225 check_host_cc(){
1226     log check_host_cc "$@"
1227     cat > $TMPC
1228     log_file $TMPC
1229     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1230 }
1231
1232 check_host_cpp(){
1233     log check_host_cpp "$@"
1234     cat > $TMPC
1235     log_file $TMPC
1236     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1237 }
1238
1239 check_host_cppflags(){
1240     log check_host_cppflags "$@"
1241     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1242 int x;
1243 EOF
1244 }
1245
1246 check_host_cflags(){
1247     log check_host_cflags "$@"
1248     set -- $($host_cflags_filter "$@")
1249     check_host_cc "$@" <<EOF && append host_cflags "$@"
1250 int x;
1251 EOF
1252 }
1253
1254 check_host_cpp_condition(){
1255     log check_host_cpp_condition "$@"
1256     header=$1
1257     condition=$2
1258     shift 2
1259     check_host_cpp "$@" <<EOF
1260 #include <$header>
1261 #if !($condition)
1262 #error "unsatisfied condition: $condition"
1263 #endif
1264 EOF
1265 }
1266
1267 apply(){
1268     file=$1
1269     shift
1270     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1271 }
1272
1273 cp_if_changed(){
1274     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1275     mkdir -p "$(dirname $2)"
1276     $cp_f "$1" "$2"
1277 }
1278
1279 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1280 # system-dependent things.
1281
1282 COMPONENT_LIST="
1283     bsfs
1284     decoders
1285     demuxers
1286     encoders
1287     filters
1288     hwaccels
1289     indevs
1290     muxers
1291     outdevs
1292     parsers
1293     protocols
1294 "
1295
1296 EXAMPLE_LIST="
1297     avio_reading_example
1298     decoding_encoding_example
1299     demuxing_decoding_example
1300     filter_audio_example
1301     filtering_audio_example
1302     filtering_video_example
1303     metadata_example
1304     muxing_example
1305     remuxing_example
1306     resampling_audio_example
1307     scaling_video_example
1308     transcode_aac_example
1309     transcoding_example
1310 "
1311
1312 EXTERNAL_LIBRARY_LIST="
1313     avisynth
1314     bzlib
1315     crystalhd
1316     decklink
1317     frei0r
1318     gnutls
1319     iconv
1320     ladspa
1321     libaacplus
1322     libass
1323     libbluray
1324     libbs2b
1325     libcaca
1326     libcdio
1327     libcelt
1328     libdc1394
1329     libfaac
1330     libfdk_aac
1331     libflite
1332     libfontconfig
1333     libfreetype
1334     libgme
1335     libgsm
1336     libiec61883
1337     libilbc
1338     libmodplug
1339     libmp3lame
1340     libnut
1341     libopencore_amrnb
1342     libopencore_amrwb
1343     libopencv
1344     libopenjpeg
1345     libopus
1346     libpulse
1347     libquvi
1348     librtmp
1349     libschroedinger
1350     libshine
1351     libsoxr
1352     libspeex
1353     libssh
1354     libstagefright_h264
1355     libtheora
1356     libtwolame
1357     libutvideo
1358     libv4l2
1359     libvidstab
1360     libvo_aacenc
1361     libvo_amrwbenc
1362     libvorbis
1363     libvpx
1364     libwavpack
1365     libwebp
1366     libx264
1367     libx265
1368     libxavs
1369     libxvid
1370     libzmq
1371     libzvbi
1372     openal
1373     opencl
1374     opengl
1375     openssl
1376     x11grab
1377     xlib
1378     zlib
1379 "
1380
1381 DOCUMENT_LIST="
1382     doc
1383     htmlpages
1384     manpages
1385     podpages
1386     txtpages
1387 "
1388
1389 FEATURE_LIST="
1390     ftrapv
1391     gray
1392     hardcoded_tables
1393     runtime_cpudetect
1394     safe_bitstream_reader
1395     shared
1396     small
1397     sram
1398     static
1399     swscale_alpha
1400 "
1401
1402 HWACCEL_LIST="
1403     dxva2
1404     vaapi
1405     vda
1406     vdpau
1407     xvmc
1408 "
1409
1410 LIBRARY_LIST="
1411     avcodec
1412     avdevice
1413     avfilter
1414     avformat
1415     avresample
1416     avutil
1417     postproc
1418     swresample
1419     swscale
1420 "
1421
1422 LICENSE_LIST="
1423     gpl
1424     nonfree
1425     version3
1426 "
1427
1428 PROGRAM_LIST="
1429     ffplay
1430     ffprobe
1431     ffserver
1432     ffmpeg
1433 "
1434
1435 SUBSYSTEM_LIST="
1436     dct
1437     dwt
1438     error_resilience
1439     fast_unaligned
1440     fft
1441     lsp
1442     lzo
1443     mdct
1444     network
1445     rdft
1446 "
1447
1448 CONFIG_LIST="
1449     $COMPONENT_LIST
1450     $DOCUMENT_LIST
1451     $EXAMPLE_LIST
1452     $EXTERNAL_LIBRARY_LIST
1453     $FEATURE_LIST
1454     $HWACCEL_LIST
1455     $LICENSE_LIST
1456     $LIBRARY_LIST
1457     $PROGRAM_LIST
1458     $SUBSYSTEM_LIST
1459     fontconfig
1460     incompatible_libav_abi
1461     memalign_hack
1462     memory_poisoning
1463     neon_clobber_test
1464     pic
1465     pod2man
1466     raise_major
1467     thumb
1468     xmm_clobber_test
1469 "
1470
1471 THREADS_LIST="
1472     pthreads
1473     os2threads
1474     w32threads
1475 "
1476
1477 ATOMICS_LIST="
1478     atomics_gcc
1479     atomics_suncc
1480     atomics_win32
1481 "
1482
1483 ARCH_LIST="
1484     aarch64
1485     alpha
1486     arm
1487     avr32
1488     avr32_ap
1489     avr32_uc
1490     bfin
1491     ia64
1492     m68k
1493     mips
1494     mips64
1495     parisc
1496     ppc
1497     ppc64
1498     s390
1499     sh4
1500     sparc
1501     sparc64
1502     tilegx
1503     tilepro
1504     tomi
1505     x86
1506     x86_32
1507     x86_64
1508 "
1509
1510 ARCH_EXT_LIST_ARM="
1511     armv5te
1512     armv6
1513     armv6t2
1514     armv8
1515     neon
1516     vfp
1517     vfpv3
1518 "
1519
1520 ARCH_EXT_LIST_MIPS="
1521     mipsfpu
1522     mips32r2
1523     mipsdspr1
1524     mipsdspr2
1525 "
1526
1527 ARCH_EXT_LIST_X86_SIMD="
1528     amd3dnow
1529     amd3dnowext
1530     avx
1531     avx2
1532     fma3
1533     fma4
1534     mmx
1535     mmxext
1536     sse
1537     sse2
1538     sse3
1539     sse4
1540     sse42
1541     ssse3
1542     xop
1543 "
1544
1545 ARCH_EXT_LIST_PPC="
1546     altivec
1547     dcbzl
1548     ldbrx
1549     ppc4xx
1550     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 mdct_select="fft"
1996 rdft_select="fft"
1997 mpegaudio_select="mpegaudiodsp"
1998 mpegaudiodsp_select="dct"
1999 mpegvideo_select="blockdsp dsputil h264chroma hpeldsp videodsp"
2000 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
2001
2002 # decoders / encoders
2003 aac_decoder_select="mdct sinewin"
2004 aac_encoder_select="audio_frame_queue mdct sinewin"
2005 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2006 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
2007 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
2008 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
2009 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
2010 aic_decoder_select="dsputil golomb"
2011 alac_encoder_select="lpc"
2012 als_decoder_select="dsputil"
2013 amrnb_decoder_select="lsp"
2014 amrwb_decoder_select="lsp"
2015 amv_decoder_select="sp5x_decoder exif"
2016 amv_encoder_select="aandcttables"
2017 ape_decoder_select="dsputil llauddsp"
2018 asv1_decoder_select="blockdsp dsputil"
2019 asv1_encoder_select="dsputil"
2020 asv2_decoder_select="blockdsp dsputil"
2021 asv2_encoder_select="dsputil"
2022 atrac1_decoder_select="mdct sinewin"
2023 atrac3_decoder_select="mdct"
2024 atrac3p_decoder_select="mdct sinewin"
2025 avrn_decoder_select="exif"
2026 bink_decoder_select="blockdsp hpeldsp"
2027 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2028 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2029 cavs_decoder_select="blockdsp dsputil golomb h264chroma qpeldsp videodsp"
2030 cllc_decoder_select="dsputil"
2031 comfortnoise_encoder_select="lpc"
2032 cook_decoder_select="audiodsp mdct sinewin"
2033 cscd_decoder_select="lzo"
2034 cscd_decoder_suggest="zlib"
2035 dca_decoder_select="mdct"
2036 dirac_decoder_select="dsputil dwt golomb videodsp"
2037 dnxhd_decoder_select="blockdsp dsputil"
2038 dnxhd_encoder_select="aandcttables blockdsp dsputil mpegvideoenc"
2039 dvvideo_decoder_select="dsputil"
2040 dvvideo_encoder_select="dsputil"
2041 dxa_decoder_select="zlib"
2042 eac3_decoder_select="ac3_decoder"
2043 eac3_encoder_select="ac3_encoder"
2044 eamad_decoder_select="aandcttables blockdsp dsputil mpegvideo"
2045 eatgq_decoder_select="aandcttables"
2046 eatqi_decoder_select="aandcttables blockdsp dsputil error_resilience mpegvideo"
2047 exr_decoder_select="zlib"
2048 ffv1_decoder_select="golomb rangecoder"
2049 ffv1_encoder_select="rangecoder"
2050 ffvhuff_decoder_select="huffyuv_decoder"
2051 ffvhuff_encoder_select="huffyuv_encoder"
2052 fic_decoder_select="golomb"
2053 flac_decoder_select="golomb"
2054 flac_encoder_select="dsputil golomb lpc"
2055 flashsv_decoder_select="zlib"
2056 flashsv_encoder_select="zlib"
2057 flashsv2_encoder_select="zlib"
2058 flashsv2_decoder_select="zlib"
2059 flv_decoder_select="h263_decoder"
2060 flv_encoder_select="h263_encoder"
2061 fourxm_decoder_select="blockdsp dsputil"
2062 fraps_decoder_select="dsputil huffman"
2063 g2m_decoder_select="blockdsp dsputil zlib"
2064 g729_decoder_select="dsputil"
2065 h261_decoder_select="error_resilience mpegvideo"
2066 h261_encoder_select="aandcttables mpegvideoenc"
2067 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo qpeldsp"
2068 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2069 h263i_decoder_select="h263_decoder"
2070 h263p_encoder_select="h263_encoder"
2071 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2072 h264_decoder_suggest="error_resilience"
2073 hevc_decoder_select="cabac dsputil golomb videodsp"
2074 huffyuv_decoder_select="dsputil huffyuvdsp llviddsp"
2075 huffyuv_encoder_select="dsputil huffman huffyuvencdsp llviddsp"
2076 iac_decoder_select="imc_decoder"
2077 imc_decoder_select="dsputil fft mdct sinewin"
2078 indeo3_decoder_select="hpeldsp"
2079 interplay_video_decoder_select="hpeldsp"
2080 jpegls_decoder_select="golomb mjpeg_decoder"
2081 jpegls_encoder_select="golomb"
2082 jv_decoder_select="blockdsp"
2083 lagarith_decoder_select="huffyuvdsp"
2084 ljpeg_encoder_select="aandcttables mpegvideoenc"
2085 loco_decoder_select="golomb"
2086 mdec_decoder_select="blockdsp dsputil error_resilience mpegvideo"
2087 metasound_decoder_select="lsp mdct sinewin"
2088 mimic_decoder_select="blockdsp dsputil hpeldsp"
2089 mjpeg_decoder_select="blockdsp dsputil hpeldsp exif"
2090 mjpeg_encoder_select="aandcttables mpegvideoenc"
2091 mjpegb_decoder_select="mjpeg_decoder"
2092 mlp_decoder_select="mlp_parser"
2093 motionpixels_decoder_select="dsputil"
2094 mp1_decoder_select="mpegaudio"
2095 mp1float_decoder_select="mpegaudio"
2096 mp2_decoder_select="mpegaudio"
2097 mp2float_decoder_select="mpegaudio"
2098 mp3_decoder_select="mpegaudio"
2099 mp3adu_decoder_select="mpegaudio"
2100 mp3adufloat_decoder_select="mpegaudio"
2101 mp3float_decoder_select="mpegaudio"
2102 mp3on4_decoder_select="mpegaudio"
2103 mp3on4float_decoder_select="mpegaudio"
2104 mpc7_decoder_select="dsputil mpegaudiodsp"
2105 mpc8_decoder_select="mpegaudiodsp"
2106 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2107 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2108 mpeg1video_decoder_select="error_resilience mpegvideo"
2109 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2110 mpeg2video_decoder_select="error_resilience mpegvideo"
2111 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2112 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2113 mpeg4_encoder_select="h263_encoder"
2114 msmpeg4v1_decoder_select="h263_decoder"
2115 msmpeg4v2_decoder_select="h263_decoder"
2116 msmpeg4v2_encoder_select="h263_encoder"
2117 msmpeg4v3_decoder_select="h263_decoder"
2118 msmpeg4v3_encoder_select="h263_encoder"
2119 mss2_decoder_select="error_resilience qpeldsp vc1_decoder"
2120 mxpeg_decoder_select="mjpeg_decoder"
2121 nellymoser_decoder_select="mdct sinewin"
2122 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2123 nuv_decoder_select="dsputil lzo"
2124 on2avc_decoder_select="mdct"
2125 opus_decoder_deps="swresample"
2126 png_decoder_select="zlib"
2127 png_encoder_select="huffyuvencdsp zlib"
2128 prores_decoder_select="blockdsp dsputil"
2129 prores_encoder_select="dsputil"
2130 qcelp_decoder_select="lsp"
2131 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2132 ra_144_encoder_select="audio_frame_queue lpc"
2133 ralf_decoder_select="golomb"
2134 rawvideo_decoder_select="dsputil"
2135 rtjpeg_decoder_select="dsputil"
2136 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2137 rv10_encoder_select="h263_encoder"
2138 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2139 rv20_encoder_select="h263_encoder"
2140 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2141 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2142 shorten_decoder_select="golomb"
2143 sipr_decoder_select="lsp"
2144 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2145 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2146 sonic_decoder_select="golomb rangecoder"
2147 sonic_encoder_select="golomb rangecoder"
2148 sonic_ls_encoder_select="golomb rangecoder"
2149 sp5x_decoder_select="mjpeg_decoder"
2150 svq1_decoder_select="hpeldsp"
2151 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2152 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2153 svq3_decoder_suggest="zlib"
2154 tak_decoder_select="audiodsp"
2155 theora_decoder_select="vp3_decoder"
2156 thp_decoder_select="mjpeg_decoder"
2157 tiff_decoder_suggest="zlib"
2158 tiff_encoder_suggest="zlib"
2159 truehd_decoder_select="mlp_parser"
2160 truemotion2_decoder_select="dsputil"
2161 truespeech_decoder_select="dsputil"
2162 tscc_decoder_select="zlib"
2163 twinvq_decoder_select="mdct lsp sinewin"
2164 utvideo_decoder_select="dsputil"
2165 utvideo_encoder_select="dsputil huffman huffyuvencdsp"
2166 vble_decoder_select="huffyuvdsp"
2167 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 qpeldsp"
2168 vc1image_decoder_select="vc1_decoder"
2169 vorbis_decoder_select="mdct"
2170 vorbis_encoder_select="mdct"
2171 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2172 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2173 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2174 vp6a_decoder_select="vp6_decoder"
2175 vp6f_decoder_select="vp6_decoder"
2176 vp7_decoder_select="h264pred videodsp"
2177 vp8_decoder_select="h264pred videodsp"
2178 vp9_decoder_select="videodsp vp9_parser"
2179 webp_decoder_select="vp8_decoder"
2180 wmalossless_decoder_select="llauddsp"
2181 wmapro_decoder_select="mdct sinewin"
2182 wmav1_decoder_select="mdct sinewin"
2183 wmav1_encoder_select="mdct sinewin"
2184 wmav2_decoder_select="mdct sinewin"
2185 wmav2_encoder_select="mdct sinewin"
2186 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2187 wmv1_decoder_select="h263_decoder"
2188 wmv1_encoder_select="h263_encoder"
2189 wmv2_decoder_select="blockdsp h263_decoder intrax8 videodsp"
2190 wmv2_encoder_select="h263_encoder"
2191 wmv3_decoder_select="vc1_decoder"
2192 wmv3image_decoder_select="wmv3_decoder"
2193 zerocodec_decoder_select="zlib"
2194 zlib_decoder_select="zlib"
2195 zlib_encoder_select="zlib"
2196 zmbv_decoder_select="zlib"
2197 zmbv_encoder_select="zlib"
2198
2199 # hardware accelerators
2200 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2201 dxva2_deps="dxva2api_h"
2202 vaapi_deps="va_va_h"
2203 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2204 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2205 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2206 xvmc_deps="X11_extensions_XvMClib_h"
2207
2208 h263_vaapi_hwaccel_deps="vaapi"
2209 h263_vaapi_hwaccel_select="h263_decoder"
2210 h263_vdpau_hwaccel_deps="vdpau"
2211 h263_vdpau_hwaccel_select="h263_decoder"
2212 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2213 h264_dxva2_hwaccel_deps="dxva2"
2214 h264_dxva2_hwaccel_select="h264_decoder"
2215 h264_vaapi_hwaccel_deps="vaapi"
2216 h264_vaapi_hwaccel_select="h264_decoder"
2217 h264_vda_decoder_deps="vda"
2218 h264_vda_decoder_select="h264_decoder"
2219 h264_vda_hwaccel_deps="vda"
2220 h264_vda_hwaccel_select="h264_decoder"
2221 h264_vda_old_hwaccel_deps="vda"
2222 h264_vda_old_hwaccel_select="h264_decoder"
2223 h264_vdpau_decoder_deps="vdpau"
2224 h264_vdpau_decoder_select="h264_decoder"
2225 h264_vdpau_hwaccel_deps="vdpau"
2226 h264_vdpau_hwaccel_select="h264_decoder"
2227 mpeg_vdpau_decoder_deps="vdpau"
2228 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2229 mpeg_xvmc_hwaccel_deps="xvmc"
2230 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2231 mpeg1_vdpau_decoder_deps="vdpau"
2232 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2233 mpeg1_vdpau_hwaccel_deps="vdpau"
2234 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2235 mpeg1_xvmc_hwaccel_deps="xvmc"
2236 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2237 mpeg2_crystalhd_decoder_select="crystalhd"
2238 mpeg2_dxva2_hwaccel_deps="dxva2"
2239 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2240 mpeg2_vaapi_hwaccel_deps="vaapi"
2241 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2242 mpeg2_vdpau_hwaccel_deps="vdpau"
2243 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2244 mpeg2_xvmc_hwaccel_deps="xvmc"
2245 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2246 mpeg4_crystalhd_decoder_select="crystalhd"
2247 mpeg4_vaapi_hwaccel_deps="vaapi"
2248 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2249 mpeg4_vdpau_decoder_deps="vdpau"
2250 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2251 mpeg4_vdpau_hwaccel_deps="vdpau"
2252 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2253 msmpeg4_crystalhd_decoder_select="crystalhd"
2254 vc1_crystalhd_decoder_select="crystalhd"
2255 vc1_dxva2_hwaccel_deps="dxva2"
2256 vc1_dxva2_hwaccel_select="vc1_decoder"
2257 vc1_vaapi_hwaccel_deps="vaapi"
2258 vc1_vaapi_hwaccel_select="vc1_decoder"
2259 vc1_vdpau_decoder_deps="vdpau"
2260 vc1_vdpau_decoder_select="vc1_decoder"
2261 vc1_vdpau_hwaccel_deps="vdpau"
2262 vc1_vdpau_hwaccel_select="vc1_decoder"
2263 wmv3_crystalhd_decoder_select="crystalhd"
2264 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2265 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2266 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2267 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2268
2269 # parsers
2270 h264_parser_select="h264_decoder"
2271 hevc_parser_select="hevc_decoder"
2272 mpegvideo_parser_select="error_resilience mpegvideo"
2273 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2274 vc1_parser_select="mpegvideo vc1_decoder"
2275
2276 # external libraries
2277 libaacplus_encoder_deps="libaacplus"
2278 libcelt_decoder_deps="libcelt"
2279 libfaac_encoder_deps="libfaac"
2280 libfaac_encoder_select="audio_frame_queue"
2281 libfdk_aac_decoder_deps="libfdk_aac"
2282 libfdk_aac_encoder_deps="libfdk_aac"
2283 libfdk_aac_encoder_select="audio_frame_queue"
2284 libgme_demuxer_deps="libgme"
2285 libgsm_decoder_deps="libgsm"
2286 libgsm_encoder_deps="libgsm"
2287 libgsm_ms_decoder_deps="libgsm"
2288 libgsm_ms_encoder_deps="libgsm"
2289 libilbc_decoder_deps="libilbc"
2290 libilbc_encoder_deps="libilbc"
2291 libmodplug_demuxer_deps="libmodplug"
2292 libmp3lame_encoder_deps="libmp3lame"
2293 libmp3lame_encoder_select="audio_frame_queue"
2294 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2295 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2296 libopencore_amrnb_encoder_select="audio_frame_queue"
2297 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2298 libopenjpeg_decoder_deps="libopenjpeg"
2299 libopenjpeg_encoder_deps="libopenjpeg"
2300 libopus_decoder_deps="libopus"
2301 libopus_encoder_deps="libopus"
2302 libopus_encoder_select="audio_frame_queue"
2303 libquvi_demuxer_deps="libquvi"
2304 libschroedinger_decoder_deps="libschroedinger"
2305 libschroedinger_encoder_deps="libschroedinger"
2306 libshine_encoder_deps="libshine"
2307 libshine_encoder_select="audio_frame_queue"
2308 libspeex_decoder_deps="libspeex"
2309 libspeex_encoder_deps="libspeex"
2310 libspeex_encoder_select="audio_frame_queue"
2311 libstagefright_h264_decoder_deps="libstagefright_h264"
2312 libtheora_encoder_deps="libtheora"
2313 libtwolame_encoder_deps="libtwolame"
2314 libvo_aacenc_encoder_deps="libvo_aacenc"
2315 libvo_aacenc_encoder_select="audio_frame_queue"
2316 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2317 libvorbis_decoder_deps="libvorbis"
2318 libvorbis_encoder_deps="libvorbis"
2319 libvorbis_encoder_select="audio_frame_queue"
2320 libvpx_vp8_decoder_deps="libvpx"
2321 libvpx_vp8_encoder_deps="libvpx"
2322 libvpx_vp9_decoder_deps="libvpx"
2323 libvpx_vp9_encoder_deps="libvpx"
2324 libwavpack_encoder_deps="libwavpack"
2325 libwebp_encoder_deps="libwebp"
2326 libx264_encoder_deps="libx264"
2327 libx264rgb_encoder_deps="libx264"
2328 libx265_encoder_deps="libx265"
2329 libxavs_encoder_deps="libxavs"
2330 libxvid_encoder_deps="libxvid"
2331 libutvideo_decoder_deps="libutvideo"
2332 libutvideo_encoder_deps="libutvideo"
2333 libzvbi_teletext_decoder_deps="libzvbi"
2334
2335 # demuxers / muxers
2336 ac3_demuxer_select="ac3_parser"
2337 asf_demuxer_select="riffdec"
2338 asf_muxer_select="riffenc"
2339 asf_stream_muxer_select="asf_muxer"
2340 avi_demuxer_select="riffdec exif"
2341 avi_muxer_select="riffenc"
2342 avisynth_demuxer_deps="avisynth"
2343 avisynth_demuxer_select="riffdec"
2344 caf_demuxer_select="riffdec"
2345 dirac_demuxer_select="dirac_parser"
2346 dts_demuxer_select="dca_parser"
2347 dtshd_demuxer_select="dca_parser"
2348 dxa_demuxer_select="riffdec"
2349 eac3_demuxer_select="ac3_parser"
2350 f4v_muxer_select="mov_muxer"
2351 flac_demuxer_select="flac_parser"
2352 hds_muxer_select="flv_muxer"
2353 hls_muxer_select="mpegts_muxer"
2354 image2_alias_pix_demuxer_select="image2_demuxer"
2355 image2_brender_pix_demuxer_select="image2_demuxer"
2356 ipod_muxer_select="mov_muxer"
2357 ismv_muxer_select="mov_muxer"
2358 libnut_demuxer_deps="libnut"
2359 libnut_muxer_deps="libnut"
2360 matroska_audio_muxer_select="matroska_muxer"
2361 matroska_demuxer_select="riffdec"
2362 matroska_demuxer_suggest="bzlib lzo zlib"
2363 matroska_muxer_select="riffenc"
2364 mmf_muxer_select="riffenc"
2365 mov_demuxer_select="riffdec"
2366 mov_demuxer_suggest="zlib"
2367 mov_muxer_select="riffenc rtpenc_chain"
2368 mp3_demuxer_select="mpegaudio_parser"
2369 mp4_muxer_select="mov_muxer"
2370 mpegts_muxer_select="adts_muxer latm_muxer"
2371 mpegtsraw_demuxer_select="mpegts_demuxer"
2372 mxf_d10_muxer_select="mxf_muxer"
2373 nut_muxer_select="riffenc"
2374 nuv_demuxer_select="riffdec"
2375 ogg_demuxer_select="golomb"
2376 psp_muxer_select="mov_muxer"
2377 rtp_demuxer_select="sdp_demuxer"
2378 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2379 rtsp_demuxer_select="http_protocol rtpdec"
2380 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2381 sap_demuxer_select="sdp_demuxer"
2382 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2383 sdp_demuxer_select="rtpdec"
2384 smoothstreaming_muxer_select="ismv_muxer"
2385 spdif_muxer_select="aac_parser"
2386 tak_demuxer_select="tak_parser"
2387 tg2_muxer_select="mov_muxer"
2388 tgp_muxer_select="mov_muxer"
2389 vobsub_demuxer_select="mpegps_demuxer"
2390 w64_demuxer_select="wav_demuxer"
2391 w64_muxer_select="wav_muxer"
2392 wav_demuxer_select="riffdec"
2393 wav_muxer_select="riffenc"
2394 webm_muxer_select="riffenc"
2395 wtv_demuxer_select="riffdec"
2396 wtv_muxer_select="riffenc"
2397 xmv_demuxer_select="riffdec"
2398 xwma_demuxer_select="riffdec"
2399
2400 # indevs / outdevs
2401 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2402 alsa_outdev_deps="alsa_asoundlib_h"
2403 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2404 avfoundation_indev_select="avfoundation"
2405 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2406 caca_outdev_deps="libcaca"
2407 decklink_outdev_deps="decklink pthreads"
2408 decklink_outdev_extralibs="-lstdc++"
2409 dshow_indev_deps="IBaseFilter"
2410 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2411 dv1394_indev_deps="dv1394"
2412 dv1394_indev_select="dv_demuxer"
2413 fbdev_indev_deps="linux_fb_h"
2414 fbdev_outdev_deps="linux_fb_h"
2415 gdigrab_indev_deps="CreateDIBSection"
2416 gdigrab_indev_extralibs="-lgdi32"
2417 gdigrab_indev_select="bmp_decoder"
2418 iec61883_indev_deps="libiec61883"
2419 jack_indev_deps="jack_jack_h sem_timedwait"
2420 lavfi_indev_deps="avfilter"
2421 libcdio_indev_deps="libcdio"
2422 libdc1394_indev_deps="libdc1394"
2423 libv4l2_indev_deps="libv4l2"
2424 openal_indev_deps="openal"
2425 opengl_outdev_deps="opengl"
2426 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2427 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2428 pulse_indev_deps="libpulse"
2429 pulse_outdev_deps="libpulse"
2430 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2431 qtkit_indev_select="qtkit"
2432 sdl_outdev_deps="sdl"
2433 sndio_indev_deps="sndio_h"
2434 sndio_outdev_deps="sndio_h"
2435 v4l_indev_deps="linux_videodev_h"
2436 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2437 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2438 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2439 vfwcap_indev_extralibs="-lavicap32"
2440 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2441 xv_outdev_extralibs="-lXv -lX11 -lXext"
2442 x11grab_indev_deps="x11grab"
2443
2444 # protocols
2445 bluray_protocol_deps="libbluray"
2446 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2447 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2448 ffrtmpcrypt_protocol_select="tcp_protocol"
2449 ffrtmphttp_protocol_deps="!librtmp_protocol"
2450 ffrtmphttp_protocol_select="http_protocol"
2451 ftp_protocol_select="tcp_protocol"
2452 gopher_protocol_select="network"
2453 http_protocol_select="tcp_protocol"
2454 httpproxy_protocol_select="tcp_protocol"
2455 https_protocol_select="tls_protocol"
2456 librtmp_protocol_deps="librtmp"
2457 librtmpe_protocol_deps="librtmp"
2458 librtmps_protocol_deps="librtmp"
2459 librtmpt_protocol_deps="librtmp"
2460 librtmpte_protocol_deps="librtmp"
2461 libssh_protocol_deps="libssh"
2462 mmsh_protocol_select="http_protocol"
2463 mmst_protocol_select="network"
2464 rtmp_protocol_deps="!librtmp_protocol"
2465 rtmp_protocol_select="tcp_protocol"
2466 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2467 rtmps_protocol_deps="!librtmp_protocol"
2468 rtmps_protocol_select="tls_protocol"
2469 rtmpt_protocol_select="ffrtmphttp_protocol"
2470 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2471 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2472 rtp_protocol_select="udp_protocol"
2473 sctp_protocol_deps="struct_sctp_event_subscribe"
2474 sctp_protocol_select="network"
2475 srtp_protocol_select="rtp_protocol"
2476 tcp_protocol_select="network"
2477 tls_protocol_deps_any="openssl gnutls"
2478 tls_protocol_select="tcp_protocol"
2479 udp_protocol_select="network"
2480 unix_protocol_deps="sys_un_h"
2481 unix_protocol_select="network"
2482
2483 # filters
2484 aconvert_filter_deps="swresample"
2485 amovie_filter_deps="avcodec avformat"
2486 aresample_filter_deps="swresample"
2487 ass_filter_deps="libass"
2488 asyncts_filter_deps="avresample"
2489 atempo_filter_deps="avcodec"
2490 atempo_filter_select="rdft"
2491 azmq_filter_deps="libzmq"
2492 blackframe_filter_deps="gpl"
2493 boxblur_filter_deps="gpl"
2494 bs2b_filter_deps="libbs2b"
2495 colormatrix_filter_deps="gpl"
2496 cropdetect_filter_deps="gpl"
2497 dctdnoiz_filter_deps="avcodec"
2498 dctdnoiz_filter_select="dct"
2499 delogo_filter_deps="gpl"
2500 deshake_filter_deps="avcodec"
2501 deshake_filter_select="dsputil"
2502 drawtext_filter_deps="libfreetype"
2503 ebur128_filter_deps="gpl"
2504 flite_filter_deps="libflite"
2505 frei0r_filter_deps="frei0r dlopen"
2506 frei0r_filter_extralibs='$ldl'
2507 frei0r_src_filter_deps="frei0r dlopen"
2508 frei0r_src_filter_extralibs='$ldl'
2509 geq_filter_deps="gpl"
2510 histeq_filter_deps="gpl"
2511 hqdn3d_filter_deps="gpl"
2512 interlace_filter_deps="gpl"
2513 kerndeint_filter_deps="gpl"
2514 ladspa_filter_deps="ladspa dlopen"
2515 ladspa_filter_extralibs='$ldl'
2516 mcdeint_filter_deps="avcodec gpl"
2517 movie_filter_deps="avcodec avformat"
2518 mp_filter_deps="gpl avcodec swscale inline_asm"
2519 mpdecimate_filter_deps="gpl avcodec"
2520 mptestsrc_filter_deps="gpl"
2521 negate_filter_deps="lut_filter"
2522 perspective_filter_deps="gpl"
2523 ocv_filter_deps="libopencv"
2524 owdenoise_filter_deps="gpl"
2525 pan_filter_deps="swresample"
2526 phase_filter_deps="gpl"
2527 pp_filter_deps="gpl postproc"
2528 pullup_filter_deps="gpl"
2529 removelogo_filter_deps="avcodec avformat swscale"
2530 resample_filter_deps="avresample"
2531 sab_filter_deps="gpl swscale"
2532 scale_filter_deps="swscale"
2533 smartblur_filter_deps="gpl swscale"
2534 showspectrum_filter_deps="avcodec"
2535 showspectrum_filter_select="rdft"
2536 spp_filter_deps="gpl avcodec"
2537 spp_filter_select="fft"
2538 stereo3d_filter_deps="gpl"
2539 subtitles_filter_deps="avformat avcodec libass"
2540 super2xsai_filter_deps="gpl"
2541 tinterlace_filter_deps="gpl"
2542 vidstabdetect_filter_deps="libvidstab"
2543 vidstabtransform_filter_deps="libvidstab"
2544 pixfmts_super2xsai_test_deps="super2xsai_filter"
2545 tinterlace_merge_test_deps="tinterlace_filter"
2546 tinterlace_pad_test_deps="tinterlace_filter"
2547 zmq_filter_deps="libzmq"
2548 zoompan_filter_deps="swscale"
2549
2550 # examples
2551 avio_reading="avformat avcodec avutil"
2552 avcodec_example_deps="avcodec avutil"
2553 demuxing_decoding_example_deps="avcodec avformat avutil"
2554 filter_audio_example_deps="avfilter avutil"
2555 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2556 filtering_video_example_deps="avfilter avcodec avformat avutil"
2557 metadata_example_deps="avformat avutil"
2558 muxing_example_deps="avcodec avformat avutil swscale"
2559 remuxing_example_deps="avcodec avformat avutil"
2560 resampling_audio_example_deps="avutil swresample"
2561 scaling_video_example_deps="avutil swscale"
2562 transcode_aac_example_deps="avcodec avformat swresample"
2563 transcoding_example_deps="avfilter avcodec avformat avutil"
2564
2565 # libraries, in linking order
2566 avcodec_deps="avutil"
2567 avdevice_deps="avformat avcodec avutil"
2568 avfilter_deps="avutil"
2569 avformat_deps="avcodec avutil"
2570 avresample_deps="avutil"
2571 postproc_deps="avutil gpl"
2572 swresample_deps="avutil"
2573 swscale_deps="avutil"
2574
2575 # programs
2576 ffmpeg_deps="avcodec avfilter avformat swresample"
2577 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2578                null_filter
2579                setpts_filter trim_filter"
2580 ffplay_deps="avcodec avformat swscale swresample sdl"
2581 ffplay_libs='$sdl_libs'
2582 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2583 ffprobe_deps="avcodec avformat"
2584 ffserver_deps="avformat fork sarestart"
2585 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2586
2587 # documentation
2588 podpages_deps="perl"
2589 manpages_deps="perl pod2man"
2590 htmlpages_deps="perl texi2html"
2591 txtpages_deps="perl makeinfo"
2592 doc_deps_any="manpages htmlpages podpages txtpages"
2593
2594 # default parameters
2595
2596 logfile="config.log"
2597
2598 # installation paths
2599 prefix_default="/usr/local"
2600 bindir_default='${prefix}/bin'
2601 datadir_default='${prefix}/share/ffmpeg'
2602 docdir_default='${prefix}/share/doc/ffmpeg'
2603 incdir_default='${prefix}/include'
2604 libdir_default='${prefix}/lib'
2605 mandir_default='${prefix}/share/man'
2606 shlibdir_default="$libdir_default"
2607
2608 # toolchain
2609 ar_default="ar"
2610 cc_default="gcc"
2611 cxx_default="g++"
2612 host_cc_default="gcc"
2613 cp_f="cp -f"
2614 install="install"
2615 ln_s="ln -s -f"
2616 nm_default="nm -g"
2617 objformat="elf"
2618 pkg_config_default=pkg-config
2619 ranlib_default="ranlib"
2620 strip_default="strip"
2621 yasmexe_default="yasm"
2622 windres_default="windres"
2623
2624 nogas=":"
2625
2626 # OS
2627 target_os_default=$(tolower $(uname -s))
2628 host_os=$target_os_default
2629
2630 # machine
2631 if test "$target_os_default" = aix; then
2632     arch_default=$(uname -p)
2633     strip_default="strip -X32_64"
2634 else
2635     arch_default=$(uname -m)
2636 fi
2637 cpu="generic"
2638
2639 # configurable options
2640 enable $PROGRAM_LIST
2641 enable $DOCUMENT_LIST
2642 enable $EXAMPLE_LIST
2643 enable $(filter_out avresample $LIBRARY_LIST)
2644 enable stripping
2645
2646 enable asm
2647 enable debug
2648 enable doc
2649 enable optimizations
2650 enable runtime_cpudetect
2651 enable safe_bitstream_reader
2652 enable static
2653 enable swscale_alpha
2654
2655 sws_max_filter_size_default=256
2656 set_default sws_max_filter_size
2657
2658 # Enable hwaccels by default.
2659 enable dxva2 vaapi vda vdpau xvmc
2660 enable xlib
2661
2662 # build settings
2663 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2664 LIBPREF="lib"
2665 LIBSUF=".a"
2666 FULLNAME='$(NAME)$(BUILDSUF)'
2667 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2668 SLIBPREF="lib"
2669 SLIBSUF=".so"
2670 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2671 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2672 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2673 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2674 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2675 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2676
2677 asflags_filter=echo
2678 cflags_filter=echo
2679 ldflags_filter=echo
2680
2681 AS_C='-c'
2682 AS_O='-o $@'
2683 CC_C='-c'
2684 CC_E='-E -o $@'
2685 CC_O='-o $@'
2686 CXX_C='-c'
2687 CXX_O='-o $@'
2688 LD_O='-o $@'
2689 LD_LIB='-l%'
2690 LD_PATH='-L'
2691 HOSTCC_C='-c'
2692 HOSTCC_E='-E -o $@'
2693 HOSTCC_O='-o $@'
2694 HOSTLD_O='-o $@'
2695
2696 host_libs='-lm'
2697 host_cflags_filter=echo
2698 host_ldflags_filter=echo
2699
2700 target_path='$(CURDIR)'
2701
2702 # since the object filename is not given with the -MM flag, the compiler
2703 # is only able to print the basename, and we must add the path ourselves
2704 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2705 DEPFLAGS='-MM'
2706
2707 # find source path
2708 if test -f configure; then
2709     source_path=.
2710 else
2711     source_path=$(cd $(dirname "$0"); pwd)
2712     echo "$source_path" | grep -q '[[:blank:]]' &&
2713         die "Out of tree builds are impossible with whitespace in source path."
2714     test -e "$source_path/config.h" &&
2715         die "Out of tree builds are impossible with config.h in source dir."
2716 fi
2717
2718 for v in "$@"; do
2719     r=${v#*=}
2720     l=${v%"$r"}
2721     r=$(sh_quote "$r")
2722     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2723 done
2724
2725 find_things(){
2726     thing=$1
2727     pattern=$2
2728     file=$source_path/$3
2729     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2730 }
2731
2732 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2733 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2734 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2735 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2736 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2737 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2738 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2739 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2740 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2741 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2742 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2743
2744 ALL_COMPONENTS="
2745     $BSF_LIST
2746     $DECODER_LIST
2747     $DEMUXER_LIST
2748     $ENCODER_LIST
2749     $FILTER_LIST
2750     $HWACCEL_LIST
2751     $INDEV_LIST
2752     $MUXER_LIST
2753     $OUTDEV_LIST
2754     $PARSER_LIST
2755     $PROTOCOL_LIST
2756 "
2757
2758 for n in $COMPONENT_LIST; do
2759     v=$(toupper ${n%s})_LIST
2760     eval enable \$$v
2761     eval ${n}_if_any="\$$v"
2762 done
2763
2764 enable $ARCH_EXT_LIST
2765
2766 die_unknown(){
2767     echo "Unknown option \"$1\"."
2768     echo "See $0 --help for available options."
2769     exit 1
2770 }
2771
2772 print_3_columns() {
2773     cat | tr ' ' '\n' | sort | pr -r -3 -t
2774 }
2775
2776 show_list() {
2777     suffix=_$1
2778     shift
2779     echo $* | sed s/$suffix//g | print_3_columns
2780     exit 0
2781 }
2782
2783 rand_list(){
2784     IFS=', '
2785     set -- $*
2786     unset IFS
2787     for thing; do
2788         comp=${thing%:*}
2789         prob=${thing#$comp}
2790         prob=${prob#:}
2791         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2792         echo "prob ${prob:-0.5}"
2793         printf '%s\n' $comp
2794     done
2795 }
2796
2797 do_random(){
2798     action=$1
2799     shift
2800     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2801     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2802 }
2803
2804 for opt do
2805     optval="${opt#*=}"
2806     case "$opt" in
2807         --extra-ldflags=*)
2808             add_ldflags $optval
2809         ;;
2810         --extra-libs=*)
2811             add_extralibs $optval
2812         ;;
2813         --disable-devices)
2814             disable $INDEV_LIST $OUTDEV_LIST
2815         ;;
2816         --enable-debug=*)
2817             debuglevel="$optval"
2818         ;;
2819         --disable-programs)
2820             disable $PROGRAM_LIST
2821         ;;
2822         --disable-everything)
2823             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2824         ;;
2825         --disable-all)
2826             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2827             disable $LIBRARY_LIST $PROGRAM_LIST doc
2828         ;;
2829         --enable-random|--disable-random)
2830             action=${opt%%-random}
2831             do_random ${action#--} $COMPONENT_LIST
2832         ;;
2833         --enable-random=*|--disable-random=*)
2834             action=${opt%%-random=*}
2835             do_random ${action#--} $optval
2836         ;;
2837         --enable-*=*|--disable-*=*)
2838             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2839             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2840             eval list=\$$(toupper $thing)_LIST
2841             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2842             list=$(filter "$name" $list)
2843             [ "$list" = "" ] && warn "Option $opt did not match anything"
2844             $action $list
2845         ;;
2846         --enable-?*|--disable-?*)
2847             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2848             if is_in $option $COMPONENT_LIST; then
2849                 test $action = disable && action=unset
2850                 eval $action \$$(toupper ${option%s})_LIST
2851             elif is_in $option $CMDLINE_SELECT; then
2852                 $action $option
2853             else
2854                 die_unknown $opt
2855             fi
2856         ;;
2857         --list-*)
2858             NAME="${opt#--list-}"
2859             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2860             NAME=${NAME%s}
2861             eval show_list $NAME \$$(toupper $NAME)_LIST
2862         ;;
2863         --help|-h) show_help
2864         ;;
2865         --fatal-warnings) enable fatal_warnings
2866         ;;
2867         *)
2868             optname="${opt%%=*}"
2869             optname="${optname#--}"
2870             optname=$(echo "$optname" | sed 's/-/_/g')
2871             if is_in $optname $CMDLINE_SET; then
2872                 eval $optname='$optval'
2873             elif is_in $optname $CMDLINE_APPEND; then
2874                 append $optname "$optval"
2875             else
2876                 die_unknown $opt
2877             fi
2878         ;;
2879     esac
2880 done
2881
2882 disabled logging && logfile=/dev/null
2883
2884 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2885 set >> $logfile
2886
2887 test -n "$cross_prefix" && enable cross_compile
2888
2889 if enabled cross_compile; then
2890     test -n "$arch" && test -n "$target_os" ||
2891         die "Must specify target arch and OS when cross-compiling"
2892 fi
2893
2894 ar_default="${cross_prefix}${ar_default}"
2895 cc_default="${cross_prefix}${cc_default}"
2896 cxx_default="${cross_prefix}${cxx_default}"
2897 nm_default="${cross_prefix}${nm_default}"
2898 pkg_config_default="${cross_prefix}${pkg_config_default}"
2899 ranlib_default="${cross_prefix}${ranlib_default}"
2900 strip_default="${cross_prefix}${strip_default}"
2901 windres_default="${cross_prefix}${windres_default}"
2902
2903 sysinclude_default="${sysroot}/usr/include"
2904
2905 test -n "$valgrind" && toolchain="valgrind-memcheck"
2906
2907 case "$toolchain" in
2908     clang-asan)
2909         cc_default="clang"
2910         add_cflags  -fsanitize=address
2911         add_ldflags -fsanitize=address
2912     ;;
2913     clang-tsan)
2914         cc_default="clang"
2915         add_cflags  -fsanitize=thread -pie
2916         add_ldflags -fsanitize=thread -pie
2917     ;;
2918     clang-usan)
2919         cc_default="clang"
2920         add_cflags  -fsanitize=undefined
2921         add_ldflags -fsanitize=undefined
2922     ;;
2923     gcc-asan)
2924         cc_default="gcc"
2925         add_cflags  -fsanitize=address
2926         add_ldflags -fsanitize=address
2927     ;;
2928     gcc-tsan)
2929         cc_default="gcc"
2930         add_cflags  -fsanitize=thread -pie -fPIC
2931         add_ldflags -fsanitize=thread -pie -fPIC
2932     ;;
2933     gcc-usan)
2934         cc_default="gcc"
2935         add_cflags  -fsanitize=undefined
2936         add_ldflags -fsanitize=undefined
2937     ;;
2938     valgrind-massif)
2939         target_exec_default=${valgrind:-"valgrind"}
2940         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"
2941     ;;
2942     valgrind-memcheck)
2943         target_exec_default=${valgrind:-"valgrind"}
2944         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2945     ;;
2946     msvc)
2947         # Check whether the current MSVC version needs the C99 converter.
2948         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2949         # support enough of C99 to build ffmpeg. Default to the new
2950         # behaviour if the regexp was unable to match anything, since this
2951         # successfully parses the version number of existing supported
2952         # versions that require the converter (MSVC 2010 and 2012).
2953         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2954         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2955             cc_default="cl"
2956         else
2957             cc_default="c99wrap cl"
2958         fi
2959         ld_default="link"
2960         nm_default="dumpbin -symbols"
2961         ar_default="lib"
2962         target_os_default="win32"
2963         # Use a relative path for TMPDIR. This makes sure all the
2964         # ffconf temp files are written with a relative path, avoiding
2965         # issues with msys/win32 path conversion for MSVC parameters
2966         # such as -Fo<file> or -out:<file>.
2967         TMPDIR=.
2968     ;;
2969     icl)
2970         cc_default="icl"
2971         ld_default="xilink"
2972         nm_default="dumpbin -symbols"
2973         ar_default="xilib"
2974         target_os_default="win32"
2975         TMPDIR=.
2976     ;;
2977     gcov)
2978         add_cflags  -fprofile-arcs -ftest-coverage
2979         add_ldflags -fprofile-arcs -ftest-coverage
2980     ;;
2981     hardened)
2982         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2983         add_ldflags -Wl,-z,relro -Wl,-z,now
2984     ;;
2985     ?*)
2986         die "Unknown toolchain $toolchain"
2987     ;;
2988 esac
2989
2990 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2991 enabled cross_compile || host_cc_default=$cc
2992 set_default host_cc
2993
2994 if ! $pkg_config --version >/dev/null 2>&1; then
2995     warn "$pkg_config not found, library detection may fail."
2996     pkg_config=false
2997 fi
2998
2999 exesuf() {
3000     case $1 in
3001         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3002     esac
3003 }
3004
3005 EXESUF=$(exesuf $target_os)
3006 HOSTEXESUF=$(exesuf $host_os)
3007
3008 # set temporary file name
3009 : ${TMPDIR:=$TEMPDIR}
3010 : ${TMPDIR:=$TMP}
3011 : ${TMPDIR:=/tmp}
3012
3013 if [ -n "$tempprefix" ] ; then
3014     mktemp(){
3015         echo $tempprefix.${HOSTNAME}.${UID}
3016     }
3017 elif ! check_cmd mktemp -u XXXXXX; then
3018     # simple replacement for missing mktemp
3019     # NOT SAFE FOR GENERAL USE
3020     mktemp(){
3021         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3022     }
3023 fi
3024
3025 tmpfile(){
3026     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3027         (set -C; exec > $tmp) 2>/dev/null ||
3028         die "Unable to create temporary file in $TMPDIR."
3029     append TMPFILES $tmp
3030     eval $1=$tmp
3031 }
3032
3033 trap 'rm -f -- $TMPFILES' EXIT
3034
3035 tmpfile TMPASM .asm
3036 tmpfile TMPC   .c
3037 tmpfile TMPCPP .cpp
3038 tmpfile TMPE   $EXESUF
3039 tmpfile TMPH   .h
3040 tmpfile TMPM   .m
3041 tmpfile TMPO   .o
3042 tmpfile TMPS   .S
3043 tmpfile TMPSH  .sh
3044 tmpfile TMPV   .ver
3045
3046 unset -f mktemp
3047
3048 chmod +x $TMPE
3049
3050 # make sure we can execute files in $TMPDIR
3051 cat > $TMPSH 2>> $logfile <<EOF
3052 #! /bin/sh
3053 EOF
3054 chmod +x $TMPSH >> $logfile 2>&1
3055 if ! $TMPSH >> $logfile 2>&1; then
3056     cat <<EOF
3057 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3058 variable to another directory and make sure that it is not mounted noexec.
3059 EOF
3060     die "Sanity test failed."
3061 fi
3062
3063 ccc_flags(){
3064     for flag; do
3065         case $flag in
3066             -std=c99)           echo -c99                       ;;
3067             -mcpu=*)            echo -arch ${flag#*=}           ;;
3068             -mieee)             echo -ieee                      ;;
3069             -O*|-fast)          echo $flag                      ;;
3070             -fno-math-errno)    echo -assume nomath_errno       ;;
3071             -g)                 echo -g3                        ;;
3072             -Wall)              echo -msg_enable level2         ;;
3073             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3074             -Wl,*)              echo $flag                      ;;
3075             -f*|-W*)                                            ;;
3076             *)                  echo $flag                      ;;
3077         esac
3078    done
3079 }
3080
3081 cparser_flags(){
3082     for flag; do
3083         case $flag in
3084             -Wno-switch)             echo -Wno-switch-enum ;;
3085             -Wno-format-zero-length) ;;
3086             -Wdisabled-optimization) ;;
3087             -Wno-pointer-sign)       echo -Wno-other ;;
3088             *)                       echo $flag ;;
3089         esac
3090     done
3091 }
3092
3093 msvc_common_flags(){
3094     for flag; do
3095         case $flag in
3096             # In addition to specifying certain flags under the compiler
3097             # specific filters, they must be specified here as well or else the
3098             # generic catch all at the bottom will print the original flag.
3099             -Wall)                ;;
3100             -std=c99)             ;;
3101             # Common flags
3102             -fomit-frame-pointer) ;;
3103             -g)                   echo -Z7 ;;
3104             -fno-math-errno)      ;;
3105             -fno-common)          ;;
3106             -fno-signed-zeros)    ;;
3107             -fPIC)                ;;
3108             -mthumb)              ;;
3109             -march=*)             ;;
3110             -lz)                  echo zlib.lib ;;
3111             -lavifil32)           echo vfw32.lib ;;
3112             -lavicap32)           echo vfw32.lib user32.lib ;;
3113             -l*)                  echo ${flag#-l}.lib ;;
3114             *)                    echo $flag ;;
3115         esac
3116     done
3117 }
3118
3119 msvc_flags(){
3120     msvc_common_flags "$@"
3121     for flag; do
3122         case $flag in
3123             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3124                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3125                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3126                                        -wd4554 \
3127                                        -wd4273 ;;
3128         esac
3129     done
3130 }
3131
3132 icl_flags(){
3133     msvc_common_flags "$@"
3134     for flag; do
3135         case $flag in
3136             # Despite what Intel's documentation says -Wall, which is supported
3137             # on Windows, does enable remarks so disable them here.
3138             -Wall)                echo $flag -Qdiag-disable:remark ;;
3139             -std=c99)             echo -Qstd=c99 ;;
3140         esac
3141     done
3142 }
3143
3144 icc_flags(){
3145     for flag; do
3146         case $flag in
3147             -flto)                echo -ipo ;;
3148             *)                    echo $flag ;;
3149         esac
3150     done
3151 }
3152
3153 pgi_flags(){
3154     for flag; do
3155         case $flag in
3156             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3157             -fomit-frame-pointer) echo -Mnoframe ;;
3158             -g)                   echo -gopt ;;
3159             *)                    echo $flag ;;
3160         esac
3161     done
3162 }
3163
3164 suncc_flags(){
3165     for flag; do
3166         case $flag in
3167             -march=*|-mcpu=*)
3168                 case "${flag#*=}" in
3169                     native)                   echo -xtarget=native       ;;
3170                     v9|niagara)               echo -xarch=sparc          ;;
3171                     ultrasparc)               echo -xarch=sparcvis       ;;
3172                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3173                     i586|pentium)             echo -xchip=pentium        ;;
3174                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3175                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3176                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3177                     pentium4*)          echo -xtarget=pentium4           ;;
3178                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3179                     *-sse3)             echo -xarch=sse3                 ;;
3180                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3181                     bonnell)                   echo -xarch=ssse3         ;;
3182                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3183                     westmere)                  echo -xtarget=westmere    ;;
3184                     silvermont)                echo -xarch=sse4_2        ;;
3185                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3186                     core-avx*|ivybridge|haswell|broadwell)
3187                                                echo -xarch=avx           ;;
3188                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3189                     btver1)                    echo -xarch=amdsse4a      ;;
3190                     btver2|bdver*)             echo -xarch=avx           ;;
3191                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3192                     k8|opteron|athlon64|athlon-fx)
3193                                                echo -xarch=sse2a         ;;
3194                     athlon*)                   echo -xarch=pentium_proa  ;;
3195                 esac
3196                 ;;
3197             -std=c99)             echo -xc99              ;;
3198             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3199             -fPIC)                echo -KPIC -xcode=pic32 ;;
3200             -W*,*)                echo $flag              ;;
3201             -f*-*|-W*|-mimpure-text)                      ;;
3202             -shared)              echo -G                 ;;
3203             *)                    echo $flag              ;;
3204         esac
3205     done
3206 }
3207
3208 tms470_flags(){
3209     for flag; do
3210         case $flag in
3211             -march=*|-mcpu=*)
3212                 case "${flag#*=}" in
3213                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3214                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3215                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3216                     armv6*|arm11*)          echo -mv=6   ;;
3217                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3218                                             echo -mv=5e  ;;
3219                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3220                 esac
3221                 ;;
3222             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3223             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3224             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3225             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3226             -msoft-float)   echo --float_support=vfplib       ;;
3227             -O[0-3]|-mf=*)  echo $flag                        ;;
3228             -g)             echo -g -mn                       ;;
3229             -pds=*)         echo $flag                        ;;
3230             -D*|-I*)        echo $flag                        ;;
3231             --gcc|--abi=*)  echo $flag                        ;;
3232             -me)            echo $flag                        ;;
3233         esac
3234     done
3235 }
3236
3237 probe_cc(){
3238     pfx=$1
3239     _cc=$2
3240
3241     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3242     unset _ld_o _ldflags _ld_lib _ld_path
3243     unset _depflags _DEPCMD _DEPFLAGS
3244     _flags_filter=echo
3245
3246     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3247         true # no-op to avoid reading stdin in following checks
3248     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3249         _type=llvm_gcc
3250         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3251         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3252         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3253         _cflags_speed='-O3'
3254         _cflags_size='-Os'
3255     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3256         _type=gcc
3257         gcc_version=$($_cc --version | head -n1)
3258         gcc_basever=$($_cc -dumpversion)
3259         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3260         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3261         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3262         if ! $_cc -dumpversion | grep -q '^2\.'; then
3263             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3264         fi
3265         _cflags_speed='-O3'
3266         _cflags_size='-Os'
3267     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3268         _type=icc
3269         _ident=$($_cc --version | head -n1)
3270         _depflags='-MMD'
3271         _cflags_speed='-O3'
3272         _cflags_size='-Os'
3273         _cflags_noopt='-O1'
3274         _flags_filter=icc_flags
3275     elif $_cc -v 2>&1 | grep -q xlc; then
3276         _type=xlc
3277         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3278         _cflags_speed='-O5'
3279         _cflags_size='-O5 -qcompact'
3280     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3281         _type=ccc
3282         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3283         _DEPFLAGS='-M'
3284         _cflags_speed='-fast'
3285         _cflags_size='-O1'
3286         _flags_filter=ccc_flags
3287     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3288         test -d "$sysroot" || die "No valid sysroot specified."
3289         _type=armcc
3290         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3291         armcc_conf="$PWD/armcc.conf"
3292         $_cc --arm_linux_configure                 \
3293              --arm_linux_config_file="$armcc_conf" \
3294              --configure_sysroot="$sysroot"        \
3295              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3296              die "Error creating armcc configuration file."
3297         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3298         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3299         as_default="${cross_prefix}gcc"
3300         _depflags='-MMD'
3301         _cflags_speed='-O3'
3302         _cflags_size='-Os'
3303     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3304         _type=tms470
3305         _ident=$($_cc -version | head -n1 | tr -s ' ')
3306         _flags='--gcc --abi=eabi -me'
3307         _cc_e='-ppl -fe=$@'
3308         _cc_o='-fe=$@'
3309         _depflags='-ppa -ppd=$(@:.o=.d)'
3310         _cflags_speed='-O3 -mf=5'
3311         _cflags_size='-O3 -mf=2'
3312         _flags_filter=tms470_flags
3313     elif $_cc -v 2>&1 | grep -q clang; then
3314         _type=clang
3315         _ident=$($_cc --version | head -n1)
3316         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3317         _cflags_speed='-O3'
3318         _cflags_size='-Os'
3319     elif $_cc -V 2>&1 | grep -q Sun; then
3320         _type=suncc
3321         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3322         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3323         _DEPFLAGS='-xM1 -xc99'
3324         _ldflags='-std=c99'
3325         _cflags_speed='-O5'
3326         _cflags_size='-O5 -xspace'
3327         _flags_filter=suncc_flags
3328     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3329         _type=pathscale
3330         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3331         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3332         _cflags_speed='-O2'
3333         _cflags_size='-Os'
3334         _flags_filter='filter_out -Wdisabled-optimization'
3335     elif $_cc -v 2>&1 | grep -q Open64; then
3336         _type=open64
3337         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3338         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3339         _cflags_speed='-O2'
3340         _cflags_size='-Os'
3341         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3342     elif $_cc -V 2>&1 | grep -q Portland; then
3343         _type=pgi
3344         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3345         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3346         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3347         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3348         _cflags_noopt="-O"
3349         _flags_filter=pgi_flags
3350     elif $_cc 2>&1 | grep -q Microsoft; then
3351         _type=msvc
3352         _ident=$($cc 2>&1 | head -n1)
3353         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3354         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3355         _cflags_speed="-O2"
3356         _cflags_size="-O1"
3357         if $_cc 2>&1 | grep -q Linker; then
3358             _ld_o='-out:$@'
3359         else
3360             _ld_o='-Fe$@'
3361         fi
3362         _cc_o='-Fo$@'
3363         _cc_e='-P -Fi$@'
3364         _flags_filter=msvc_flags
3365         _ld_lib='lib%.a'
3366         _ld_path='-libpath:'
3367         _flags='-nologo'
3368         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3369         if [ $pfx = hostcc ]; then
3370             append _cflags -Dsnprintf=_snprintf
3371         fi
3372         disable stripping
3373     elif $_cc 2>&1 | grep -q Intel; then
3374         _type=icl
3375         _ident=$($cc 2>&1 | head -n1)
3376         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3377         # Not only is O3 broken on 13.x+ but it is slower on all previous
3378         # versions (tested) as well.
3379         _cflags_speed="-O2"
3380         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3381         if $_cc 2>&1 | grep -q Linker; then
3382             _ld_o='-out:$@'
3383         else
3384             _ld_o='-Fe$@'
3385         fi
3386         _cc_o='-Fo$@'
3387         _cc_e='-P'
3388         _flags_filter=icl_flags
3389         _ld_lib='lib%.a'
3390         _ld_path='-libpath:'
3391         # -Qdiag-error to make icl error when seeing certain unknown arguments
3392         _flags='-nologo -Qdiag-error:4044,10157'
3393         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3394         # with MSVC which enables it by default.
3395         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3396         if [ $pfx = hostcc ]; then
3397             append _cflags -Dsnprintf=_snprintf
3398         fi
3399     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3400         _type=cparser
3401         _ident=$($_cc --version | head -n1)
3402         _depflags='-MMD'
3403         _cflags_speed='-O4'
3404         _cflags_size='-O2'
3405         _flags_filter=cparser_flags
3406     fi
3407
3408     eval ${pfx}_type=\$_type
3409     eval ${pfx}_ident=\$_ident
3410 }
3411
3412 set_ccvars(){
3413     eval ${1}_C=\${_cc_c-\${${1}_C}}
3414     eval ${1}_E=\${_cc_e-\${${1}_E}}
3415     eval ${1}_O=\${_cc_o-\${${1}_O}}
3416
3417     if [ -n "$_depflags" ]; then
3418         eval ${1}_DEPFLAGS=\$_depflags
3419     else
3420         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3421         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3422         eval DEP${1}FLAGS=\$_flags
3423     fi
3424 }
3425
3426 probe_cc cc "$cc"
3427 cflags_filter=$_flags_filter
3428 cflags_speed=$_cflags_speed
3429 cflags_size=$_cflags_size
3430 cflags_noopt=$_cflags_noopt
3431 add_cflags $_flags $_cflags
3432 cc_ldflags=$_ldflags
3433 set_ccvars CC
3434
3435 probe_cc hostcc "$host_cc"
3436 host_cflags_filter=$_flags_filter
3437 add_host_cflags  $_flags $_cflags
3438 set_ccvars HOSTCC
3439
3440 test -n "$cc_type" && enable $cc_type ||
3441     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3442
3443 : ${as_default:=$cc}
3444 : ${dep_cc_default:=$cc}
3445 : ${ld_default:=$cc}
3446 : ${host_ld_default:=$host_cc}
3447 set_default ar as dep_cc ld host_ld windres
3448
3449 probe_cc as "$as"
3450 asflags_filter=$_flags_filter
3451 add_asflags $_flags $_cflags
3452 set_ccvars AS
3453
3454 probe_cc ld "$ld"
3455 ldflags_filter=$_flags_filter
3456 add_ldflags $_flags $_ldflags
3457 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3458 LD_O=${_ld_o-$LD_O}
3459 LD_LIB=${_ld_lib-$LD_LIB}
3460 LD_PATH=${_ld_path-$LD_PATH}
3461
3462 probe_cc hostld "$host_ld"
3463 host_ldflags_filter=$_flags_filter
3464 add_host_ldflags $_flags $_ldflags
3465 HOSTLD_O=${_ld_o-$HOSTLD_O}
3466
3467 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3468     probe_cc depcc "$dep_cc"
3469     CCDEP=${_DEPCMD:-$DEPCMD}
3470     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3471     DEPCCFLAGS=$_flags
3472 fi
3473
3474 if $ar 2>&1 | grep -q Microsoft; then
3475     arflags="-nologo"
3476     ar_o='-out:$@'
3477 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3478     arflags="rq"
3479     ar_o='$@'
3480 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3481     arflags='-Xany -r -c'
3482     ar_o='$@'
3483 else
3484     arflags="rc"
3485     ar_o='$@'
3486 fi
3487
3488 add_cflags $extra_cflags
3489 add_cxxflags $extra_cxxflags
3490 add_asflags $extra_cflags
3491
3492 if test -n "$sysroot"; then
3493     case "$cc_type" in
3494         gcc|llvm_gcc|clang)
3495             add_cppflags --sysroot="$sysroot"
3496             add_ldflags --sysroot="$sysroot"
3497 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3498             add_cppflags -isysroot "$sysroot"
3499             add_ldflags -isysroot "$sysroot"
3500         ;;
3501         tms470)
3502             add_cppflags -I"$sysinclude"
3503             add_ldflags  --sysroot="$sysroot"
3504         ;;
3505     esac
3506 fi
3507
3508 if test "$cpu" = host; then
3509     enabled cross_compile &&
3510         die "--cpu=host makes no sense when cross-compiling."
3511
3512     case "$cc_type" in
3513         gcc|llvm_gcc)
3514             check_native(){
3515                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3516                 sed -n "/cc1.*$1=/{
3517                             s/.*$1=\\([^ ]*\\).*/\\1/
3518                             p
3519                             q
3520                         }" $TMPE
3521             }
3522             cpu=$(check_native -march || check_native -mcpu)
3523         ;;
3524     esac
3525
3526     test "${cpu:-host}" = host &&
3527         die "--cpu=host not supported with compiler $cc"
3528 fi
3529
3530 # Deal with common $arch aliases
3531 case "$arch" in
3532     aarch64|arm64)
3533         arch="aarch64"
3534     ;;
3535     arm*|iPad*|iPhone*)
3536         arch="arm"
3537     ;;
3538     mips*|IP*)
3539         arch="mips"
3540     ;;
3541     parisc*|hppa*)
3542         arch="parisc"
3543     ;;
3544     "Power Macintosh"|ppc*|powerpc*)
3545         arch="ppc"
3546     ;;
3547     s390|s390x)
3548         arch="s390"
3549     ;;
3550     sh4|sh)
3551         arch="sh4"
3552     ;;
3553     sun4u|sparc*)
3554         arch="sparc"
3555     ;;
3556     tilegx|tile-gx)
3557         arch="tilegx"
3558     ;;
3559     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3560         arch="x86"
3561     ;;
3562 esac
3563
3564 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3565 enable $arch
3566
3567 # Add processor-specific flags
3568 if enabled aarch64; then
3569
3570     case $cpu in
3571         armv*)
3572             cpuflags="-march=$cpu"
3573         ;;
3574         *)
3575             cpuflags="-mcpu=$cpu"
3576         ;;
3577     esac
3578
3579 elif enabled alpha; then
3580
3581     cpuflags="-mcpu=$cpu"
3582
3583 elif enabled arm; then
3584
3585     check_arm_arch() {
3586         check_cpp_condition stddef.h \
3587             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3588             $cpuflags
3589     }
3590
3591     probe_arm_arch() {
3592         if   check_arm_arch 4;        then echo armv4;
3593         elif check_arm_arch 4T;       then echo armv4t;
3594         elif check_arm_arch 5;        then echo armv5;
3595         elif check_arm_arch 5E;       then echo armv5e;
3596         elif check_arm_arch 5T;       then echo armv5t;
3597         elif check_arm_arch 5TE;      then echo armv5te;
3598         elif check_arm_arch 5TEJ;     then echo armv5te;
3599         elif check_arm_arch 6;        then echo armv6;
3600         elif check_arm_arch 6J;       then echo armv6j;
3601         elif check_arm_arch 6K;       then echo armv6k;
3602         elif check_arm_arch 6Z;       then echo armv6z;
3603         elif check_arm_arch 6ZK;      then echo armv6zk;
3604         elif check_arm_arch 6T2;      then echo armv6t2;
3605         elif check_arm_arch 7;        then echo armv7;
3606         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3607         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3608         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3609         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3610         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3611         fi
3612     }
3613
3614     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3615
3616     case $cpu in
3617         armv*)
3618             cpuflags="-march=$cpu"
3619             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3620         ;;
3621         *)
3622             cpuflags="-mcpu=$cpu"
3623             case $cpu in
3624                 cortex-a*)                               subarch=armv7a  ;;
3625                 cortex-r*)                               subarch=armv7r  ;;
3626                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3627                 arm11*)                                  subarch=armv6   ;;
3628                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3629                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3630                 *)                             subarch=$(probe_arm_arch) ;;
3631             esac
3632         ;;
3633     esac
3634
3635     case "$subarch" in
3636         armv5t*)    enable fast_clz                ;;
3637         armv[6-8]*)
3638             enable fast_clz
3639             disabled fast_unaligned || enable fast_unaligned
3640             ;;
3641     esac
3642
3643 elif enabled avr32; then
3644
3645     case $cpu in
3646         ap7[02]0[0-2])
3647             subarch="avr32_ap"
3648             cpuflags="-mpart=$cpu"
3649         ;;
3650         ap)
3651             subarch="avr32_ap"
3652             cpuflags="-march=$cpu"
3653         ;;
3654         uc3[ab]*)
3655             subarch="avr32_uc"
3656             cpuflags="-mcpu=$cpu"
3657         ;;
3658         uc)
3659             subarch="avr32_uc"
3660             cpuflags="-march=$cpu"
3661         ;;
3662     esac
3663
3664 elif enabled bfin; then
3665
3666     cpuflags="-mcpu=$cpu"
3667
3668 elif enabled mips; then
3669
3670     cpuflags="-march=$cpu"
3671
3672     case $cpu in
3673         24kc)
3674             disable mipsfpu
3675             disable mipsdspr1
3676             disable mipsdspr2
3677         ;;
3678         24kf*)
3679             disable mipsdspr1
3680             disable mipsdspr2
3681         ;;
3682         24kec|34kc|1004kc)
3683             disable mipsfpu
3684             disable mipsdspr2
3685         ;;
3686         24kef*|34kf*|1004kf*)
3687             disable mipsdspr2
3688         ;;
3689         74kc)
3690             disable mipsfpu
3691         ;;
3692     esac
3693
3694 elif enabled ppc; then
3695
3696     disable ldbrx
3697     disable vsx
3698
3699     case $(tolower $cpu) in
3700         601|ppc601|powerpc601)
3701             cpuflags="-mcpu=601"
3702             disable altivec
3703         ;;
3704         603*|ppc603*|powerpc603*)
3705             cpuflags="-mcpu=603"
3706             disable altivec
3707         ;;
3708         604*|ppc604*|powerpc604*)
3709             cpuflags="-mcpu=604"
3710             disable altivec
3711         ;;
3712         g3|75*|ppc75*|powerpc75*)
3713             cpuflags="-mcpu=750"
3714             disable altivec
3715         ;;
3716         g4|745*|ppc745*|powerpc745*)
3717             cpuflags="-mcpu=7450"
3718         ;;
3719         74*|ppc74*|powerpc74*)
3720             cpuflags="-mcpu=7400"
3721         ;;
3722         g5|970|ppc970|powerpc970)
3723             cpuflags="-mcpu=970"
3724         ;;
3725         power[3-8]*)
3726             cpuflags="-mcpu=$cpu"
3727         ;;
3728         cell)
3729             cpuflags="-mcpu=cell"
3730             enable ldbrx
3731         ;;
3732         e500mc)
3733             cpuflags="-mcpu=e500mc"
3734             disable altivec
3735         ;;
3736         e500v2)
3737             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3738             disable altivec
3739             disable dcbzl
3740         ;;
3741         e500)
3742             cpuflags="-mcpu=8540 -mhard-float"
3743             disable altivec
3744             disable dcbzl
3745         ;;
3746     esac
3747
3748 elif enabled sparc; then
3749
3750     case $cpu in
3751         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3752             cpuflags="-mcpu=$cpu"
3753         ;;
3754         ultrasparc*|niagara[234])
3755             cpuflags="-mcpu=$cpu"
3756         ;;
3757     esac
3758
3759 elif enabled x86; then
3760
3761     case $cpu in
3762         i[345]86|pentium)
3763             cpuflags="-march=$cpu"
3764             disable mmx
3765         ;;
3766         # targets that do NOT support nopl and conditional mov (cmov)
3767         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3768             cpuflags="-march=$cpu"
3769             disable i686
3770         ;;
3771         # targets that do support nopl and conditional mov (cmov)
3772         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3773         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3774             cpuflags="-march=$cpu"
3775             enable i686
3776             enable fast_cmov
3777         ;;
3778         # targets that do support conditional mov but on which it's slow
3779         pentium4|pentium4m|prescott|nocona)
3780             cpuflags="-march=$cpu"
3781             enable i686
3782             disable fast_cmov
3783         ;;
3784     esac
3785
3786 fi
3787
3788 if [ "$cpu" != generic ]; then
3789     add_cflags  $cpuflags
3790     add_asflags $cpuflags
3791 fi
3792
3793 # compiler sanity check
3794 check_exec <<EOF
3795 int main(void){ return 0; }
3796 EOF
3797 if test "$?" != 0; then
3798     echo "$cc is unable to create an executable file."
3799     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3800         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3801         echo "Only do this if you know what cross compiling means."
3802     fi
3803     die "C compiler test failed."
3804 fi
3805
3806 add_cppflags -D_ISOC99_SOURCE
3807 add_cxxflags -D__STDC_CONSTANT_MACROS
3808 check_cflags -std=c99
3809 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3810 #include <stdlib.h>
3811 EOF
3812 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3813 #include <stdlib.h>
3814 EOF
3815
3816 add_host_cppflags -D_ISOC99_SOURCE
3817 check_host_cflags -std=c99
3818 check_host_cflags -Wall
3819 check_host_cflags -O3
3820
3821 check_64bit(){
3822     arch32=$1
3823     arch64=$2
3824     expr=$3
3825     check_code cc "" "int test[2*($expr) - 1]" &&
3826         subarch=$arch64 || subarch=$arch32
3827 }
3828
3829 case "$arch" in
3830     aarch64|alpha|ia64)
3831         spic=$shared
3832     ;;
3833     mips)
3834         check_64bit mips mips64 '_MIPS_SIM > 1'
3835         spic=$shared
3836     ;;
3837     parisc)
3838         check_64bit parisc parisc64 'sizeof(void *) > 4'
3839         spic=$shared
3840     ;;
3841     ppc)
3842         check_64bit ppc ppc64 'sizeof(void *) > 4'
3843         spic=$shared
3844     ;;
3845     s390)
3846         check_64bit s390 s390x 'sizeof(void *) > 4'
3847         spic=$shared
3848     ;;
3849     sparc)
3850         check_64bit sparc sparc64 'sizeof(void *) > 4'
3851         spic=$shared
3852     ;;
3853     x86)
3854         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3855         if test "$subarch" = "x86_64"; then
3856             spic=$shared
3857         fi
3858     ;;
3859     ppc)
3860         check_cc <<EOF && subarch="ppc64"
3861         int test[(int)sizeof(char*) - 7];
3862 EOF
3863     ;;
3864 esac
3865
3866 enable $subarch
3867 enabled spic && enable_weak pic
3868
3869 # OS specific
3870 case $target_os in
3871     aix)
3872         SHFLAGS=-shared
3873         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3874         enabled shared && add_ldflags -Wl,-brtl
3875         ;;
3876     android)
3877         disable symver
3878         SLIB_INSTALL_NAME='$(SLIBNAME)'
3879         SLIB_INSTALL_LINKS=
3880         # soname not set on purpose
3881         SHFLAGS=-shared
3882         ;;
3883     haiku)
3884         prefix_default="/boot/common"
3885         network_extralibs="-lnetwork"
3886         host_libs=
3887         ;;
3888     sunos)
3889         SHFLAGS='-shared -Wl,-h,$$(@F)'
3890         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3891         network_extralibs="-lsocket -lnsl"
3892         # When using suncc to build, the Solaris linker will mark
3893         # an executable with each instruction set encountered by
3894         # the Solaris assembler.  As our libraries contain their own
3895         # guards for processor-specific code, instead suppress
3896         # generation of the HWCAPS ELF section on Solaris x86 only.
3897         enabled_all suncc x86 &&
3898             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3899             add_ldflags -Wl,-M,mapfile
3900         nm_default='nm -P -g'
3901         ;;
3902     netbsd)
3903         disable symver
3904         oss_indev_extralibs="-lossaudio"
3905         oss_outdev_extralibs="-lossaudio"
3906         enabled gcc || check_ldflags -Wl,-zmuldefs
3907         ;;
3908     openbsd|bitrig)
3909         disable symver
3910         SHFLAGS='-shared'
3911         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3912         SLIB_INSTALL_LINKS=
3913         oss_indev_extralibs="-lossaudio"
3914         oss_outdev_extralibs="-lossaudio"
3915         ;;
3916     dragonfly)
3917         disable symver
3918         ;;
3919     freebsd)
3920         ;;
3921     bsd/os)
3922         add_extralibs -lpoll -lgnugetopt
3923         strip="strip -d"
3924         ;;
3925     darwin)
3926         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3927         enabled ppc && add_asflags -force_cpusubtype_ALL
3928         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3929         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3930         strip="${strip} -x"
3931         add_ldflags -Wl,-dynamic,-search_paths_first
3932         SLIBSUF=".dylib"
3933         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3934         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3935         objformat="macho"
3936         enabled x86_64 && objformat="macho64"
3937         enabled_any pic shared ||
3938             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3939         ;;
3940     mingw32*)
3941         if test $target_os = "mingw32ce"; then
3942             disable network
3943         else
3944             target_os=mingw32
3945         fi
3946         LIBTARGET=i386
3947         if enabled x86_64; then
3948             LIBTARGET="i386:x86-64"
3949         elif enabled arm; then
3950             LIBTARGET=arm-wince
3951         fi
3952         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3953         check_ldflags -Wl,--nxcompat
3954         check_ldflags -Wl,--dynamicbase
3955         shlibdir_default="$bindir_default"
3956         SLIBPREF=""
3957         SLIBSUF=".dll"
3958         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3959         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3960         dlltool="${cross_prefix}dlltool"
3961         if check_cmd lib.exe -list; then
3962             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3963             if enabled x86_64; then
3964                 LIBTARGET=x64
3965             fi
3966         elif check_cmd $dlltool --version; then
3967             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3968         fi
3969         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3970         SLIB_INSTALL_LINKS=
3971         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3972         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3973         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3974         objformat="win32"
3975         ranlib=:
3976         enable dos_paths
3977         ;;
3978     win32|win64)
3979         disable symver
3980         if enabled shared; then
3981             # Link to the import library instead of the normal static library
3982             # for shared libs.
3983             LD_LIB='%.lib'
3984             # Cannot build both shared and static libs with MSVC or icl.
3985             disable static
3986         fi
3987         shlibdir_default="$bindir_default"
3988         SLIBPREF=""
3989         SLIBSUF=".dll"
3990         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3991         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3992         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3993         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3994         SLIB_INSTALL_LINKS=
3995         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3996         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3997         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3998         objformat="win32"
3999         ranlib=:
4000         enable dos_paths
4001         ;;
4002     cygwin*)
4003         target_os=cygwin
4004         shlibdir_default="$bindir_default"
4005         SLIBPREF="cyg"
4006         SLIBSUF=".dll"
4007         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4008         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4009         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4010         SLIB_INSTALL_LINKS=
4011         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4012         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4013         objformat="win32"
4014         enable dos_paths
4015         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4016         ;;
4017     *-dos|freedos|opendos)
4018         network_extralibs="-lsocket"
4019         objformat="coff"
4020         enable dos_paths
4021         add_cppflags -U__STRICT_ANSI__
4022         ;;
4023     linux)
4024         enable dv1394
4025         ;;
4026     irix*)
4027         target_os=irix
4028         ranlib="echo ignoring ranlib"
4029         ;;
4030     os/2*)
4031         strip="lxlite -CS"
4032         ln_s="cp -f"
4033         objformat="aout"
4034         add_cppflags -D_GNU_SOURCE
4035         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4036         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4037         LIBSUF="_s.a"
4038         SLIBPREF=""
4039         SLIBSUF=".dll"
4040         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4041         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4042         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4043             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4044             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4045             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4046             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4047             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4048         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4049             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4050         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4051         enable dos_paths
4052         enable_weak os2threads
4053         ;;
4054     gnu/kfreebsd)
4055         add_cppflags -D_BSD_SOURCE
4056         ;;
4057     gnu)
4058         ;;
4059     qnx)
4060         add_cppflags -D_QNX_SOURCE
4061         network_extralibs="-lsocket"
4062         ;;
4063     symbian)
4064         SLIBSUF=".dll"
4065         enable dos_paths
4066         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4067         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4068         add_ldflags -Wl,--target1-abs,--no-undefined \
4069                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4070                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4071         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4072                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4073                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4074         ;;
4075     osf1)
4076         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4077         ;;
4078     minix)
4079         ;;
4080     plan9)
4081         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4082                      -D_REENTRANT_SOURCE        \
4083                      -D_RESEARCH_SOURCE         \
4084                      -DFD_SETSIZE=96            \
4085                      -DHAVE_SOCK_OPTS
4086         add_compat strtod.o strtod=avpriv_strtod
4087         network_extralibs='-lbsd'
4088         exeobjs=compat/plan9/main.o
4089         disable ffserver
4090         cp_f='cp'
4091         ;;
4092     none)
4093         ;;
4094     *)
4095         die "Unknown OS '$target_os'."
4096         ;;
4097 esac
4098
4099 # determine libc flavour
4100
4101 probe_libc(){
4102     pfx=$1
4103     pfx_no_=${pfx%_}
4104     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4105     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4106         eval ${pfx}libc_type=uclibc
4107         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4108     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4109         eval ${pfx}libc_type=glibc
4110         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4111     # MinGW headers can be installed on Cygwin, so check for newlib first.
4112     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4113         eval ${pfx}libc_type=newlib
4114         add_${pfx}cppflags -U__STRICT_ANSI__
4115     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4116     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4117         eval ${pfx}libc_type=mingw64
4118         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4119             add_compat msvcrt/snprintf.o
4120             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4121         fi
4122         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4123         eval test \$${pfx_no_}cc_type = "gcc" &&
4124             add_${pfx}cppflags -D__printf__=__gnu_printf__
4125     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4126          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4127         eval ${pfx}libc_type=mingw32
4128         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4129             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4130             die "ERROR: MinGW32 runtime version must be >= 3.15."
4131         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4132         eval test \$${pfx_no_}cc_type = "gcc" &&
4133             add_${pfx}cppflags -D__printf__=__gnu_printf__
4134     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4135         eval ${pfx}libc_type=msvcrt
4136         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4137         # 0x601 by default unless something else is set by the user.
4138         # This can easily lead to us detecting functions only present
4139         # in such new versions and producing binaries requiring windows 7.0.
4140         # Therefore explicitly set the default to XP unless the user has
4141         # set something else on the command line.
4142         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4143             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4144     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4145         eval ${pfx}libc_type=klibc
4146     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4147         eval ${pfx}libc_type=bionic
4148     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4149         eval ${pfx}libc_type=solaris
4150         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4151     fi
4152 }
4153
4154 probe_libc
4155 test -n "$libc_type" && enable libc_$libc_type
4156 probe_libc host_
4157 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4158
4159 case $libc_type in
4160     bionic)
4161         add_compat strtod.o strtod=avpriv_strtod
4162         ;;
4163     msvcrt)
4164         add_compat strtod.o strtod=avpriv_strtod
4165         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4166                                      _snprintf=avpriv_snprintf  \
4167                                      vsnprintf=avpriv_vsnprintf
4168         ;;
4169 esac
4170
4171 # hacks for compiler/libc/os combinations
4172
4173 if enabled_all tms470 libc_glibc; then
4174     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4175     add_cppflags -D__USER_LABEL_PREFIX__=
4176     add_cppflags -D__builtin_memset=memset
4177     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4178     add_cflags   -pds=48    # incompatible redefinition of macro
4179 fi
4180
4181 if enabled_all ccc libc_glibc; then
4182     add_ldflags -Wl,-z,now  # calls to libots crash without this
4183 fi
4184
4185 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4186     add_cppflags '-I\$(SRC_PATH)/compat/float'
4187
4188 esc(){
4189     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4190 }
4191
4192 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4193
4194 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4195
4196 set_default $PATHS_LIST
4197 set_default nm
4198
4199 # we need to build at least one lib type
4200 if ! enabled_any static shared; then
4201     cat <<EOF
4202 At least one library type must be built.
4203 Specify --enable-static to build the static libraries or --enable-shared to
4204 build the shared libraries as well. To only build the shared libraries specify
4205 --disable-static in addition to --enable-shared.
4206 EOF
4207     exit 1;
4208 fi
4209
4210 die_license_disabled() {
4211     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4212 }
4213
4214 die_license_disabled_gpl() {
4215     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4216 }
4217
4218 die_license_disabled gpl frei0r
4219 die_license_disabled gpl libcdio
4220 die_license_disabled gpl libutvideo
4221 die_license_disabled gpl libvidstab
4222 die_license_disabled gpl libx264
4223 die_license_disabled gpl libx265
4224 die_license_disabled gpl libxavs
4225 die_license_disabled gpl libxvid
4226 die_license_disabled gpl libzvbi
4227 die_license_disabled gpl x11grab
4228
4229 die_license_disabled nonfree libaacplus
4230 die_license_disabled nonfree libfaac
4231 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4232 enabled gpl && die_license_disabled_gpl nonfree openssl
4233
4234 die_license_disabled version3 libopencore_amrnb
4235 die_license_disabled version3 libopencore_amrwb
4236 die_license_disabled version3 libvo_aacenc
4237 die_license_disabled version3 libvo_amrwbenc
4238
4239 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4240
4241 disabled optimizations || check_cflags -fomit-frame-pointer
4242
4243 enable_weak_pic() {
4244     disabled pic && return
4245     enable pic
4246     add_cppflags -DPIC
4247     case "$target_os" in
4248     mingw*|cygwin*)
4249         ;;
4250     *)
4251         add_cflags -fPIC
4252         ;;
4253     esac
4254     add_asflags  -fPIC
4255 }
4256
4257 enabled pic && enable_weak_pic
4258
4259 check_cc <<EOF || die "Symbol mangling check failed."
4260 int ff_extern;
4261 EOF
4262 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4263 extern_prefix=${sym%%ff_extern*}
4264
4265 check_cc <<EOF && enable_weak inline_asm
4266 void foo(void) { __asm__ volatile ("" ::); }
4267 EOF
4268
4269 _restrict=
4270 for restrict_keyword in restrict __restrict__ __restrict; do
4271     check_cc <<EOF && _restrict=$restrict_keyword && break
4272 void foo(char * $restrict_keyword p);
4273 EOF
4274 done
4275
4276 check_cc <<EOF && enable pragma_deprecated
4277 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4278 EOF
4279
4280 check_cc <<EOF && enable attribute_packed
4281 struct { int x; } __attribute__((packed)) x;
4282 EOF
4283
4284 check_cc <<EOF && enable attribute_may_alias
4285 union { int x; } __attribute__((may_alias)) x;
4286 EOF
4287
4288 check_cc <<EOF || die "endian test failed"
4289 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4290 EOF
4291 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4292
4293 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] ;then
4294     if ! enabled bigendian ;then
4295         enable vsx
4296     fi
4297 fi
4298
4299
4300 if enabled asm; then
4301     enabled     arm         && nogas=die
4302     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4303     as=${gas:=$as}
4304     check_as <<EOF && enable gnu_as || \
4305         $nogas "GNU assembler not found, install gas-preprocessor"
4306 .macro m n
4307 \n: .int 0
4308 .endm
4309 m x
4310 EOF
4311
4312     check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
4313 .altmacro
4314 EOF
4315
4316     check_as <<EOF && enable as_func
4317 .func test
4318 .endfunc
4319 EOF
4320 fi
4321
4322 check_inline_asm inline_asm_labels '"1:\n"'
4323
4324 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4325
4326 if enabled aarch64; then
4327     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4328     # internal assembler in clang 3.3 does not support this instruction
4329     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4330     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4331
4332     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4333
4334 elif enabled alpha; then
4335
4336     check_cflags -mieee
4337
4338 elif enabled arm; then
4339
4340     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4341 float func(float a, float b){ return a+b; }
4342 EOF
4343
4344     enabled thumb && check_cflags -mthumb || check_cflags -marm
4345
4346     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4347         enable vfp_args
4348     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4349         case "${cross_prefix:-$cc}" in
4350             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4351             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4352 __asm__ (".eabi_attribute 28, 1");
4353 int main(void) { return 0; }
4354 EOF
4355         esac
4356         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4357     fi
4358
4359     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4360     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4361     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4362     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4363     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4364     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4365
4366     [ $target_os = linux ] ||
4367         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4368             $ARCH_EXT_LIST_ARM
4369
4370     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4371
4372     check_as <<EOF && enable as_dn_directive
4373 ra .dn d0.i16
4374 .unreq ra
4375 EOF
4376
4377     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4378
4379 elif enabled mips; then
4380
4381     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4382     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4383      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4384     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4385      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4386     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4387      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4388     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4389      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4390
4391 elif enabled parisc; then
4392
4393     if enabled gcc; then
4394         case $($cc -dumpversion) in
4395             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4396         esac
4397     fi
4398
4399 elif enabled ppc; then
4400
4401     enable local_aligned_8 local_aligned_16 local_aligned_32
4402
4403     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4404     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4405     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4406     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4407
4408     # AltiVec flags: The FSF version of GCC differs from the Apple version
4409     if enabled altivec; then
4410         check_cflags -maltivec -mabi=altivec &&
4411         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4412         check_cflags -faltivec
4413
4414         # check if our compiler supports Motorola AltiVec C API
4415         check_cc <<EOF || disable altivec
4416 $inc_altivec_h
4417 int main(void) {
4418     vector signed int v1 = (vector signed int) { 0 };
4419     vector signed int v2 = (vector signed int) { 1 };
4420     v1 = vec_add(v1, v2);
4421     return 0;
4422 }
4423 EOF
4424
4425         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4426     fi
4427
4428     if enabled vsx; then
4429         check_cflags -mvsx
4430     fi
4431 elif enabled x86; then
4432
4433     check_builtin rdtsc    intrin.h   "__rdtsc()"
4434     check_builtin mm_empty mmintrin.h "_mm_empty()"
4435
4436     enable local_aligned_8 local_aligned_16 local_aligned_32
4437
4438     # check whether EBP is available on x86
4439     # As 'i' is stored on the stack, this program will crash
4440     # if the base pointer is used to access it because the
4441     # base pointer is cleared in the inline assembly code.
4442     check_exec_crash <<EOF && enable ebp_available
4443 volatile int i=0;
4444 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4445 return i;
4446 EOF
4447
4448     # check whether EBX is available on x86
4449     check_inline_asm ebx_available '""::"b"(0)' &&
4450         check_inline_asm ebx_available '"":::"%ebx"'
4451
4452     # check whether xmm clobbers are supported
4453     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4454
4455     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4456         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4457
4458     # check whether binutils is new enough to compile AVX/SSSE3/MMXEXT
4459     enabled avx    && check_inline_asm avx_inline    '"vextractf128 $1, %ymm0, %xmm1"'
4460     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4461     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4462
4463     if ! disabled_any asm mmx yasm; then
4464         if check_cmd $yasmexe --version; then
4465             enabled x86_64 && yasm_extra="-m amd64"
4466             yasm_debug="-g dwarf2"
4467         elif check_cmd nasm -v; then
4468             yasmexe=nasm
4469             yasm_debug="-g -F dwarf"
4470             if enabled x86_64; then
4471                 case "$objformat" in
4472                     elf)   objformat=elf64 ;;
4473                     win32) objformat=win64 ;;
4474                 esac
4475             fi
4476         fi
4477
4478         YASMFLAGS="-f $objformat $yasm_extra"
4479         enabled pic               && append YASMFLAGS "-DPIC"
4480         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4481         case "$objformat" in
4482             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4483         esac
4484
4485         check_yasm "movbe ecx, [5]" && enable yasm ||
4486             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4487         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4488         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4489         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4490         check_yasm "CPU amdnop" || disable cpunop
4491     fi
4492
4493     case "$cpu" in
4494         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4495             disable fast_clz
4496         ;;
4497     esac
4498
4499 fi
4500
4501 check_ldflags -Wl,--as-needed
4502
4503 if check_func dlopen; then
4504     ldl=
4505 elif check_func dlopen -ldl; then
4506     ldl=-ldl
4507 fi
4508
4509 if ! disabled network; then
4510     check_func getaddrinfo $network_extralibs
4511     check_func getservbyport $network_extralibs
4512     check_func inet_aton $network_extralibs
4513
4514     check_type netdb.h "struct addrinfo"
4515     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4516     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4517     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4518     check_type poll.h "struct pollfd"
4519     check_type netinet/sctp.h "struct sctp_event_subscribe"
4520     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4521     check_type netinet/in.h "struct sockaddr_in6"
4522     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4523     check_type "sys/types.h sys/socket.h" socklen_t
4524
4525     # Prefer arpa/inet.h over winsock2
4526     if check_header arpa/inet.h ; then
4527         check_func closesocket
4528     elif check_header winsock2.h ; then
4529         check_func_headers winsock2.h closesocket -lws2 &&
4530             network_extralibs="-lws2" ||
4531         { check_func_headers winsock2.h closesocket -lws2_32 &&
4532             network_extralibs="-lws2_32"; } || disable winsock2_h network
4533         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4534
4535         check_type ws2tcpip.h socklen_t
4536         check_type ws2tcpip.h "struct addrinfo"
4537         check_type ws2tcpip.h "struct group_source_req"
4538         check_type ws2tcpip.h "struct ip_mreq_source"
4539         check_type ws2tcpip.h "struct ipv6_mreq"
4540         check_type winsock2.h "struct pollfd"
4541         check_struct winsock2.h "struct sockaddr" sa_len
4542         check_type ws2tcpip.h "struct sockaddr_in6"
4543         check_type ws2tcpip.h "struct sockaddr_storage"
4544     else
4545         disable network
4546     fi
4547 fi
4548
4549 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4550 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4551 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4552 check_builtin sarestart signal.h "SA_RESTART"
4553 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4554
4555 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4556 check_func  ${malloc_prefix}memalign            && enable memalign
4557 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4558
4559 check_func  access
4560 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4561 check_func  fcntl
4562 check_func  fork
4563 check_func  gethrtime
4564 check_func  getopt
4565 check_func  getrusage
4566 check_func  gettimeofday
4567 check_func  isatty
4568 check_func  localtime_r
4569 check_func  mach_absolute_time
4570 check_func  mkstemp
4571 check_func  mmap
4572 check_func  mprotect
4573 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4574 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4575 check_func  sched_getaffinity
4576 check_func  setrlimit
4577 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4578 check_func  strerror_r
4579 check_func  sysconf
4580 check_func  sysctl
4581 check_func  usleep
4582
4583 check_func_headers conio.h kbhit
4584 check_func_headers io.h setmode
4585 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4586 check_func_headers stdlib.h getenv
4587
4588 check_func_headers windows.h CoTaskMemFree -lole32
4589 check_func_headers windows.h GetProcessAffinityMask
4590 check_func_headers windows.h GetProcessTimes
4591 check_func_headers windows.h GetSystemTimeAsFileTime
4592 check_func_headers windows.h MapViewOfFile
4593 check_func_headers windows.h PeekNamedPipe
4594 check_func_headers windows.h SetConsoleTextAttribute
4595 check_func_headers windows.h Sleep
4596 check_func_headers windows.h VirtualAlloc
4597 check_func_headers glob.h glob
4598 enabled xlib &&
4599     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4600
4601 check_header cl/cl.h
4602 check_header direct.h
4603 check_header dlfcn.h
4604 check_header dxva.h
4605 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4606 check_header io.h
4607 check_header libcrystalhd/libcrystalhd_if.h
4608 check_header mach/mach_time.h
4609 check_header malloc.h
4610 check_header poll.h
4611 check_header sys/mman.h
4612 check_header sys/param.h
4613 check_header sys/resource.h
4614 check_header sys/select.h
4615 check_header sys/time.h
4616 check_header sys/un.h
4617 check_header termios.h
4618 check_header unistd.h
4619 check_header vdpau/vdpau.h
4620 check_header vdpau/vdpau_x11.h
4621 check_header VideoDecodeAcceleration/VDADecoder.h
4622 check_header windows.h
4623 check_header X11/extensions/XvMClib.h
4624 check_header asm/types.h
4625
4626 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4627 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4628 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4629
4630 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4631
4632 if ! disabled w32threads && ! enabled pthreads; then
4633     check_func_headers "windows.h process.h" _beginthreadex &&
4634         enable w32threads || disable w32threads
4635 fi
4636
4637 # check for some common methods of building with pthread support
4638 # do this before the optional library checks as some of them require pthreads
4639 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4640     enable pthreads
4641     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4642         add_cflags -pthread
4643         add_extralibs -pthread
4644     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4645         add_cflags -pthreads
4646         add_extralibs -pthreads
4647     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4648         add_cflags -ldl -pthread
4649         add_extralibs -ldl -pthread
4650     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4651         add_extralibs -lpthreadGC2
4652     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4653         :
4654     elif ! check_func pthread_join && ! check_func pthread_create; then
4655         disable pthreads
4656     fi
4657     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4658 fi
4659
4660
4661 if enabled pthreads; then
4662   check_func pthread_cancel
4663 fi
4664
4665 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4666 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4667
4668 check_lib math.h sin -lm && LIBM="-lm"
4669 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4670
4671 atan2f_args=2
4672 ldexpf_args=2
4673 powf_args=2
4674 fminf_args=2
4675
4676 for func in $MATH_FUNCS; do
4677     eval check_mathfunc $func \${${func}_args:-1}
4678 done
4679
4680 # these are off by default, so fail if requested and not available
4681 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4682 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4683                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4684                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4685 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4686 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4687 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4688 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4689 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4690 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4691 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4692 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4693 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4694 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4695                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4696                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4697 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4698 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4699 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4700 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"
4701 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4702 enabled fontconfig        && enable libfontconfig
4703 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4704 enabled libfreetype       && require_libfreetype
4705 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4706 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4707                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4708                                done || die "ERROR: libgsm not found"; }
4709 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4710 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4711 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4712 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4713 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4714 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4715 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4716 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4717                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4718                                die "ERROR: libopenjpeg not found"; }
4719 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4720 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4721 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4722 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4723 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4724 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4725 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4726 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4727 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4728 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4729     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4730     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4731 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4732 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4733                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4734                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4735 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4736 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4737 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4738 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4739 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4740 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4741 enabled libvpx            && {
4742     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4743                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4744     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 ||
4745                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4746     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4747     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; } }
4748 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4749 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4750 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4751                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4752                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4753 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4754                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4755                                die "ERROR: libx265 version must be >= 17."; }
4756 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4757 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4758 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4759 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4760 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4761                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4762                                die "ERROR: openal not found"; } &&
4763                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4764                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4765 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4766                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4767                                die "ERROR: opencl not found"; } &&
4768                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4769                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4770                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4771 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4772                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4773                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4774                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4775                                die "ERROR: opengl not found."
4776                              }