configure: fix g729 decoder dependencies
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92
93 Licensing options:
94   --enable-gpl             allow use of GPL code, the resulting libs
95                            and binaries will be under GPL [no]
96   --enable-version3        upgrade (L)GPL to version 3 [no]
97   --enable-nonfree         allow use of nonfree code, the resulting libs
98                            and binaries will be unredistributable [no]
99
100 Configuration options:
101   --disable-static         do not build static libraries [no]
102   --enable-shared          build shared libraries [no]
103   --enable-small           optimize for size instead of speed
104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
105   --enable-gray            enable full grayscale support (slower color)
106   --disable-swscale-alpha  disable alpha channel support in swscale
107   --disable-all            disable building components, libraries and programs
108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
109   --enable-raise-major     increase major version numbers in sonames [no]
110
111 Program options:
112   --disable-programs       do not build command line programs
113   --disable-ffmpeg         disable ffmpeg build
114   --disable-ffplay         disable ffplay build
115   --disable-ffprobe        disable ffprobe build
116   --disable-ffserver       disable ffserver build
117
118 Documentation options:
119   --disable-doc            do not build documentation
120   --disable-htmlpages      do not build HTML documentation pages
121   --disable-manpages       do not build man documentation pages
122   --disable-podpages       do not build POD documentation pages
123   --disable-txtpages       do not build text documentation pages
124
125 Component options:
126   --disable-avdevice       disable libavdevice build
127   --disable-avcodec        disable libavcodec build
128   --disable-avformat       disable libavformat build
129   --disable-avutil         disable libavutil build
130   --disable-swresample     disable libswresample build
131   --disable-swscale        disable libswscale build
132   --disable-postproc       disable libpostproc build
133   --disable-avfilter       disable libavfilter build
134   --enable-avresample      enable libavresample build [no]
135   --disable-pthreads       disable pthreads [auto]
136   --disable-w32threads     disable Win32 threads [auto]
137   --disable-os2threads     disable OS/2 threads [auto]
138   --disable-network        disable network support [no]
139   --disable-dct            disable DCT code
140   --disable-dwt            disable DWT code
141   --disable-error-resilience disable error resilience code
142   --disable-lsp            disable LSP code
143   --disable-lzo            disable LZO decoder code
144   --disable-mdct           disable MDCT code
145   --disable-rdft           disable RDFT code
146   --disable-fft            disable FFT code
147
148 Hardware accelerators:
149   --disable-dxva2          disable DXVA2 code [autodetect]
150   --disable-vaapi          disable VAAPI code [autodetect]
151   --disable-vda            disable VDA code [autodetect]
152   --disable-vdpau          disable VDPAU code [autodetect]
153
154 Individual component options:
155   --disable-everything     disable all components listed below
156   --disable-encoder=NAME   disable encoder NAME
157   --enable-encoder=NAME    enable encoder NAME
158   --disable-encoders       disable all encoders
159   --disable-decoder=NAME   disable decoder NAME
160   --enable-decoder=NAME    enable decoder NAME
161   --disable-decoders       disable all decoders
162   --disable-hwaccel=NAME   disable hwaccel NAME
163   --enable-hwaccel=NAME    enable hwaccel NAME
164   --disable-hwaccels       disable all hwaccels
165   --disable-muxer=NAME     disable muxer NAME
166   --enable-muxer=NAME      enable muxer NAME
167   --disable-muxers         disable all muxers
168   --disable-demuxer=NAME   disable demuxer NAME
169   --enable-demuxer=NAME    enable demuxer NAME
170   --disable-demuxers       disable all demuxers
171   --enable-parser=NAME     enable parser NAME
172   --disable-parser=NAME    disable parser NAME
173   --disable-parsers        disable all parsers
174   --enable-bsf=NAME        enable bitstream filter NAME
175   --disable-bsf=NAME       disable bitstream filter NAME
176   --disable-bsfs           disable all bitstream filters
177   --enable-protocol=NAME   enable protocol NAME
178   --disable-protocol=NAME  disable protocol NAME
179   --disable-protocols      disable all protocols
180   --enable-indev=NAME      enable input device NAME
181   --disable-indev=NAME     disable input device NAME
182   --disable-indevs         disable input devices
183   --enable-outdev=NAME     enable output device NAME
184   --disable-outdev=NAME    disable output device NAME
185   --disable-outdevs        disable output devices
186   --disable-devices        disable all devices
187   --enable-filter=NAME     enable filter NAME
188   --disable-filter=NAME    disable filter NAME
189   --disable-filters        disable all filters
190
191 External library support:
192   --enable-avisynth        enable reading of AviSynth script files [no]
193   --disable-bzlib          disable bzlib [autodetect]
194   --enable-fontconfig      enable fontconfig
195   --enable-frei0r          enable frei0r video filtering
196   --enable-gnutls          enable gnutls [no]
197   --disable-iconv          disable iconv [autodetect]
198   --enable-ladspa          enable LADSPA audio filtering
199   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
200   --enable-libass          enable libass subtitles rendering [no]
201   --enable-libbluray       enable BluRay reading using libbluray [no]
202   --enable-libbs2b         enable bs2b DSP library [no]
203   --enable-libcaca         enable textual display using libcaca
204   --enable-libcelt         enable CELT decoding via libcelt [no]
205   --enable-libcdio         enable audio CD grabbing with libcdio
206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
207                            and libraw1394 [no]
208   --enable-libfaac         enable AAC encoding via libfaac [no]
209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
211   --enable-libfreetype     enable libfreetype [no]
212   --enable-libgme          enable Game Music Emu via libgme [no]
213   --enable-libgsm          enable GSM de/encoding via libgsm [no]
214   --enable-libiec61883     enable iec61883 via libiec61883 [no]
215   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
216   --enable-libmodplug      enable ModPlug via libmodplug [no]
217   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
218   --enable-libnut          enable NUT (de)muxing via libnut,
219                            native (de)muxer exists [no]
220   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
221   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
222   --enable-libopencv       enable video filtering via libopencv [no]
223   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
224   --enable-libopus         enable Opus de/encoding via libopus [no]
225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
226   --enable-libquvi         enable quvi input via libquvi [no]
227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
230   --enable-libsoxr         enable Include libsoxr resampling [no]
231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
232   --enable-libssh          enable SFTP protocol via libssh [no]
233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
234   --enable-libtheora       enable Theora encoding via libtheora [no]
235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
238   --enable-libvidstab      enable video stabilization using vid.stab [no]
239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
242                            native implementation exists [no]
243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
245   --enable-libwebp         enable WebP encoding via libwebp [no]
246   --enable-libx264         enable H.264 encoding via x264 [no]
247   --enable-libx265         enable HEVC encoding via x265 [no]
248   --enable-libxavs         enable AVS encoding via xavs [no]
249   --enable-libxvid         enable Xvid encoding via xvidcore,
250                            native MPEG-4/Xvid encoder exists [no]
251   --enable-libzmq          enable message passing via libzmq [no]
252   --enable-libzvbi         enable teletext support via libzvbi [no]
253   --enable-decklink        enable Blackmagick DeckLink output [no]
254   --enable-openal          enable OpenAL 1.1 capture support [no]
255   --enable-opencl          enable OpenCL code
256   --enable-opengl          enable OpenGL rendering [no]
257   --enable-openssl         enable openssl [no]
258   --enable-x11grab         enable X11 grabbing [no]
259   --disable-xlib           disable xlib [autodetect]
260   --disable-zlib           disable zlib [autodetect]
261
262 Toolchain options:
263   --arch=ARCH              select architecture [$arch]
264   --cpu=CPU                select the minimum required CPU (affects
265                            instruction selection, may crash on older CPUs)
266   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
267   --progs-suffix=SUFFIX    program name suffix []
268   --enable-cross-compile   assume a cross-compiler is used
269   --sysroot=PATH           root of cross-build tree
270   --sysinclude=PATH        location of cross-build system headers
271   --target-os=OS           compiler targets OS [$target_os]
272   --target-exec=CMD        command to run executables on target
273   --target-path=DIR        path to view of build directory on target
274   --target-samples=DIR     path to samples directory on target
275   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
276   --toolchain=NAME         set tool defaults according to NAME
277   --nm=NM                  use nm tool NM [$nm_default]
278   --ar=AR                  use archive tool AR [$ar_default]
279   --as=AS                  use assembler AS [$as_default]
280   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
281   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
282   --cc=CC                  use C compiler CC [$cc_default]
283   --cxx=CXX                use C compiler CXX [$cxx_default]
284   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
285   --ld=LD                  use linker LD [$ld_default]
286   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
287   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
288   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
289   --host-cc=HOSTCC         use host C compiler HOSTCC
290   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
291   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
292   --host-ld=HOSTLD         use host linker HOSTLD
293   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
294   --host-libs=HLIBS        use libs HLIBS when linking for host
295   --host-os=OS             compiler host OS [$target_os]
296   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
297   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
298   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
299   --extra-libs=ELIBS       add ELIBS [$ELIBS]
300   --extra-version=STRING   version string suffix []
301   --optflags=OPTFLAGS      override optimization-related compiler flags
302   --build-suffix=SUFFIX    library name suffix []
303   --enable-pic             build position-independent code
304   --enable-thumb           compile for Thumb instruction set
305   --enable-lto             use link-time optimization
306
307 Advanced options (experts only):
308   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
309   --disable-symver         disable symbol versioning
310   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
311   --disable-safe-bitstream-reader
312                            disable buffer boundary checking in bitreaders
313                            (faster, but may crash)
314   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
315   --enable-sram            allow use of on-chip SRAM
316   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
317
318 Optimization options (experts only):
319   --disable-asm            disable all assembly optimizations
320   --disable-altivec        disable AltiVec optimizations
321   --disable-amd3dnow       disable 3DNow! optimizations
322   --disable-amd3dnowext    disable 3DNow! extended optimizations
323   --disable-mmx            disable MMX optimizations
324   --disable-mmxext         disable MMXEXT optimizations
325   --disable-sse            disable SSE optimizations
326   --disable-sse2           disable SSE2 optimizations
327   --disable-sse3           disable SSE3 optimizations
328   --disable-ssse3          disable SSSE3 optimizations
329   --disable-sse4           disable SSE4 optimizations
330   --disable-sse42          disable SSE4.2 optimizations
331   --disable-avx            disable AVX optimizations
332   --disable-xop            disable XOP optimizations
333   --disable-fma3           disable FMA3 optimizations
334   --disable-fma4           disable FMA4 optimizations
335   --disable-avx2           disable AVX2 optimizations
336   --disable-armv5te        disable armv5te optimizations
337   --disable-armv6          disable armv6 optimizations
338   --disable-armv6t2        disable armv6t2 optimizations
339   --disable-vfp            disable VFP optimizations
340   --disable-neon           disable NEON optimizations
341   --disable-inline-asm     disable use of inline assembly
342   --disable-yasm           disable use of nasm/yasm assembly
343   --disable-mips32r2       disable MIPS32R2 optimizations
344   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
345   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
346   --disable-mipsfpu        disable floating point MIPS optimizations
347   --disable-fast-unaligned consider unaligned accesses slow
348
349 Developer options (useful when working on FFmpeg itself):
350   --disable-debug          disable debugging symbols
351   --enable-debug=LEVEL     set the debug level [$debuglevel]
352   --disable-optimizations  disable compiler optimizations
353   --enable-extra-warnings  enable more compiler warnings
354   --disable-stripping      disable stripping of executables and shared libraries
355   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
356                            2 causes a slowdown at runtime.
357   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
358   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
359                            leaks and errors, using the specified valgrind binary.
360                            Cannot be combined with --target-exec
361   --enable-ftrapv          Trap arithmetic overflows
362   --samples=PATH           location of test samples for FATE, if not set use
363                            \$FATE_SAMPLES at make invocation time.
364   --enable-neon-clobber-test check NEON registers for clobbering (should be
365                            used only for debugging purposes)
366   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
367                            should be used only for debugging purposes)
368   --enable-random          randomly enable/disable components
369   --disable-random
370   --enable-random=LIST     randomly enable/disable specific components or
371   --disable-random=LIST    component groups. LIST is a comma-separated list
372                            of NAME[:PROB] entries where NAME is a component
373                            (group) and PROB the probability associated with
374                            NAME (default 0.5).
375   --random-seed=VALUE      seed value for --enable/disable-random
376
377 NOTE: Object files are built at the place where configure is launched.
378 EOF
379   exit 0
380 }
381
382 quotes='""'
383
384 log(){
385     echo "$@" >> $logfile
386 }
387
388 log_file(){
389     log BEGIN $1
390     pr -n -t $1 >> $logfile
391     log END $1
392 }
393
394 echolog(){
395     log "$@"
396     echo "$@"
397 }
398
399 warn(){
400     log "WARNING: $*"
401     WARNINGS="${WARNINGS}WARNING: $*\n"
402 }
403
404 die(){
405     echolog "$@"
406     cat <<EOF
407
408 If you think configure made a mistake, make sure you are using the latest
409 version from Git.  If the latest version fails, report the problem to the
410 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
411 EOF
412     if disabled logging; then
413         cat <<EOF
414 Rerun configure with logging enabled (do not use --disable-logging), and
415 include the log this produces with your report.
416 EOF
417     else
418         cat <<EOF
419 Include the log file "$logfile" produced by configure as this will help
420 solve the problem.
421 EOF
422     fi
423     exit 1
424 }
425
426 # Avoid locale weirdness, besides we really just want to translate ASCII.
427 toupper(){
428     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
429 }
430
431 tolower(){
432     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
433 }
434
435 c_escape(){
436     echo "$*" | sed 's/["\\]/\\\0/g'
437 }
438
439 sh_quote(){
440     v=$(echo "$1" | sed "s/'/'\\\\''/g")
441     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
442     echo "$v"
443 }
444
445 cleanws(){
446     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
447 }
448
449 filter(){
450     pat=$1
451     shift
452     for v; do
453         eval "case $v in $pat) echo $v ;; esac"
454     done
455 }
456
457 filter_out(){
458     pat=$1
459     shift
460     for v; do
461         eval "case $v in $pat) ;; *) echo $v ;; esac"
462     done
463 }
464
465 map(){
466     m=$1
467     shift
468     for v; do eval $m; done
469 }
470
471 add_suffix(){
472     suffix=$1
473     shift
474     for v; do echo ${v}${suffix}; done
475 }
476
477 set_all(){
478     value=$1
479     shift
480     for var in $*; do
481         eval $var=$value
482     done
483 }
484
485 set_weak(){
486     value=$1
487     shift
488     for var; do
489         eval : \${$var:=$value}
490     done
491 }
492
493 sanitize_var_name(){
494     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
495 }
496
497 set_safe(){
498     var=$1
499     shift
500     eval $(sanitize_var_name "$var")='$*'
501 }
502
503 get_safe(){
504     eval echo \$$(sanitize_var_name "$1")
505 }
506
507 pushvar(){
508     for pvar in $*; do
509         eval level=\${${pvar}_level:=0}
510         eval ${pvar}_${level}="\$$pvar"
511         eval ${pvar}_level=$(($level+1))
512     done
513 }
514
515 popvar(){
516     for pvar in $*; do
517         eval level=\${${pvar}_level:-0}
518         test $level = 0 && continue
519         eval level=$(($level-1))
520         eval $pvar="\${${pvar}_${level}}"
521         eval ${pvar}_level=$level
522         eval unset ${pvar}_${level}
523     done
524 }
525
526 enable(){
527     set_all yes $*
528 }
529
530 disable(){
531     set_all no $*
532 }
533
534 enable_weak(){
535     set_weak yes $*
536 }
537
538 disable_weak(){
539     set_weak no $*
540 }
541
542 enable_safe(){
543     for var; do
544         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
545     done
546 }
547
548 disable_safe(){
549     for var; do
550         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
551     done
552 }
553
554 do_enable_deep(){
555     for var; do
556         enabled $var && continue
557         eval sel="\$${var}_select"
558         eval sgs="\$${var}_suggest"
559         pushvar var sgs
560         enable_deep $sel
561         popvar sgs
562         enable_deep_weak $sgs
563         popvar var
564     done
565 }
566
567 enable_deep(){
568     do_enable_deep $*
569     enable $*
570 }
571
572 enable_deep_weak(){
573     for var; do
574         disabled $var && continue
575         pushvar var
576         do_enable_deep $var
577         popvar var
578         enable_weak $var
579     done
580 }
581
582 enabled(){
583     test "${1#!}" = "$1" && op== || op=!=
584     eval test "x\$${1#!}" $op "xyes"
585 }
586
587 disabled(){
588     test "${1#!}" = "$1" && op== || op=!=
589     eval test "x\$${1#!}" $op "xno"
590 }
591
592 enabled_all(){
593     for opt; do
594         enabled $opt || return 1
595     done
596 }
597
598 disabled_all(){
599     for opt; do
600         disabled $opt || return 1
601     done
602 }
603
604 enabled_any(){
605     for opt; do
606         enabled $opt && return 0
607     done
608 }
609
610 disabled_any(){
611     for opt; do
612         disabled $opt && return 0
613     done
614     return 1
615 }
616
617 set_default(){
618     for opt; do
619         eval : \${$opt:=\$${opt}_default}
620     done
621 }
622
623 is_in(){
624     value=$1
625     shift
626     for var in $*; do
627         [ $var = $value ] && return 0
628     done
629     return 1
630 }
631
632 do_check_deps(){
633     for cfg; do
634         cfg="${cfg#!}"
635         enabled ${cfg}_checking && die "Circular dependency for $cfg."
636         disabled ${cfg}_checking && continue
637         enable ${cfg}_checking
638         append allopts $cfg
639
640         eval dep_all="\$${cfg}_deps"
641         eval dep_any="\$${cfg}_deps_any"
642         eval dep_sel="\$${cfg}_select"
643         eval dep_sgs="\$${cfg}_suggest"
644         eval dep_ifa="\$${cfg}_if"
645         eval dep_ifn="\$${cfg}_if_any"
646
647         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
648         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
649         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
650
651         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
652         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
653         enabled_all  $dep_all || disable $cfg
654         enabled_any  $dep_any || disable $cfg
655         disabled_any $dep_sel && disable $cfg
656
657         if enabled $cfg; then
658             enable_deep $dep_sel
659             enable_deep_weak $dep_sgs
660         fi
661
662         disable ${cfg}_checking
663     done
664 }
665
666 check_deps(){
667     unset allopts
668
669     do_check_deps "$@"
670
671     for cfg in $allopts; do
672         enabled $cfg || continue
673         eval dep_extralibs="\$${cfg}_extralibs"
674         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
675     done
676 }
677
678 print_config(){
679     pfx=$1
680     files=$2
681     shift 2
682     map 'eval echo "$v \${$v:-no}"' "$@" |
683     awk "BEGIN { split(\"$files\", files) }
684         {
685             c = \"$pfx\" toupper(\$1);
686             v = \$2;
687             sub(/yes/, 1, v);
688             sub(/no/,  0, v);
689             for (f in files) {
690                 file = files[f];
691                 if (file ~ /\\.h\$/) {
692                     printf(\"#define %s %d\\n\", c, v) >>file;
693                 } else if (file ~ /\\.asm\$/) {
694                     printf(\"%%define %s %d\\n\", c, v) >>file;
695                 } else if (file ~ /\\.mak\$/) {
696                     n = -v ? \"\" : \"!\";
697                     printf(\"%s%s=yes\\n\", n, c) >>file;
698                 } else if (file ~ /\\.texi\$/) {
699                     pre = -v ? \"\" : \"@c \";
700                     yesno = \$2;
701                     c2 = tolower(c);
702                     gsub(/_/, \"-\", c2);
703                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
704                 }
705             }
706         }"
707 }
708
709 print_enabled(){
710     suf=$1
711     shift
712     for v; do
713         enabled $v && printf "%s\n" ${v%$suf};
714     done
715 }
716
717 append(){
718     var=$1
719     shift
720     eval "$var=\"\$$var $*\""
721 }
722
723 prepend(){
724     var=$1
725     shift
726     eval "$var=\"$* \$$var\""
727 }
728
729 unique(){
730     var=$1
731     uniq_list=""
732     for tok in $(eval echo \$$var); do
733         uniq_list="$(filter_out $tok $uniq_list) $tok"
734     done
735     eval "$var=\"${uniq_list}\""
736 }
737
738 add_cppflags(){
739     append CPPFLAGS "$@"
740 }
741
742 add_cflags(){
743     append CFLAGS $($cflags_filter "$@")
744 }
745
746 add_cxxflags(){
747     append CXXFLAGS $($cflags_filter "$@")
748 }
749
750 add_asflags(){
751     append ASFLAGS $($asflags_filter "$@")
752 }
753
754 add_ldflags(){
755     append LDFLAGS $($ldflags_filter "$@")
756 }
757
758 add_stripflags(){
759     append ASMSTRIPFLAGS "$@"
760 }
761
762 add_extralibs(){
763     prepend extralibs $($ldflags_filter "$@")
764 }
765
766 add_host_cppflags(){
767     append host_cppflags "$@"
768 }
769
770 add_host_cflags(){
771     append host_cflags $($host_cflags_filter "$@")
772 }
773
774 add_host_ldflags(){
775     append host_ldflags $($host_ldflags_filter "$@")
776 }
777
778 add_compat(){
779     append compat_objs $1
780     shift
781     map 'add_cppflags -D$v' "$@"
782 }
783
784 check_cmd(){
785     log "$@"
786     "$@" >> $logfile 2>&1
787 }
788
789 check_stat(){
790     log check_stat "$@"
791     stat "$1" >> $logfile 2>&1
792 }
793
794 cc_o(){
795     eval printf '%s\\n' $CC_O
796 }
797
798 cc_e(){
799     eval printf '%s\\n' $CC_E
800 }
801
802 check_cc(){
803     log check_cc "$@"
804     cat > $TMPC
805     log_file $TMPC
806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
807 }
808
809 check_cxx(){
810     log check_cxx "$@"
811     cat > $TMPCPP
812     log_file $TMPCPP
813     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
814 }
815
816 check_oc(){
817     log check_oc "$@"
818     cat > $TMPM
819     log_file $TMPM
820     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
821 }
822
823 check_cpp(){
824     log check_cpp "$@"
825     cat > $TMPC
826     log_file $TMPC
827     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
828 }
829
830 as_o(){
831     eval printf '%s\\n' $AS_O
832 }
833
834 check_as(){
835     log check_as "$@"
836     cat > $TMPS
837     log_file $TMPS
838     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
839 }
840
841 check_inline_asm(){
842     log check_inline_asm "$@"
843     name="$1"
844     code="$2"
845     shift 2
846     disable $name
847     check_cc "$@" <<EOF && enable $name
848 void foo(void){ __asm__ volatile($code); }
849 EOF
850 }
851
852 check_insn(){
853     log check_insn "$@"
854     check_inline_asm ${1}_inline "\"$2\""
855     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
856 }
857
858 check_yasm(){
859     log check_yasm "$@"
860     echo "$1" > $TMPS
861     log_file $TMPS
862     shift 1
863     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
864 }
865
866 ld_o(){
867     eval printf '%s\\n' $LD_O
868 }
869
870 check_ld(){
871     log check_ld "$@"
872     type=$1
873     shift 1
874     flags=$(filter_out '-l*|*.so' $@)
875     libs=$(filter '-l*|*.so' $@)
876     check_$type $($cflags_filter $flags) || return
877     flags=$($ldflags_filter $flags)
878     libs=$($ldflags_filter $libs)
879     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
880 }
881
882 print_include(){
883     hdr=$1
884     test "${hdr%.h}" = "${hdr}" &&
885         echo "#include $hdr"    ||
886         echo "#include <$hdr>"
887 }
888
889 check_code(){
890     log check_code "$@"
891     check=$1
892     headers=$2
893     code=$3
894     shift 3
895     {
896         for hdr in $headers; do
897             print_include $hdr
898         done
899         echo "int main(void) { $code; return 0; }"
900     } | check_$check "$@"
901 }
902
903 check_cppflags(){
904     log check_cppflags "$@"
905     check_cc "$@" <<EOF && append CPPFLAGS "$@"
906 int x;
907 EOF
908 }
909
910 test_cflags(){
911     log test_cflags "$@"
912     set -- $($cflags_filter "$@")
913     check_cc "$@" <<EOF
914 int x;
915 EOF
916 }
917
918 check_cflags(){
919     log check_cflags "$@"
920     test_cflags "$@" && add_cflags "$@"
921 }
922
923 check_cxxflags(){
924     log check_cxxflags "$@"
925     set -- $($cflags_filter "$@")
926     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
927 int x;
928 EOF
929 }
930
931 test_ldflags(){
932     log test_ldflags "$@"
933     check_ld "cc" "$@" <<EOF
934 int main(void){ return 0; }
935 EOF
936 }
937
938 check_ldflags(){
939     log check_ldflags "$@"
940     test_ldflags "$@" && add_ldflags "$@"
941 }
942
943 test_stripflags(){
944     log test_stripflags "$@"
945     # call check_cc to get a fresh TMPO
946     check_cc <<EOF
947 int main(void) { return 0; }
948 EOF
949     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
950 }
951
952 check_stripflags(){
953     log check_stripflags "$@"
954     test_stripflags "$@" && add_stripflags "$@"
955 }
956
957 check_header(){
958     log check_header "$@"
959     header=$1
960     shift
961     disable_safe $header
962     check_cpp "$@" <<EOF && enable_safe $header
963 #include <$header>
964 int x;
965 EOF
966 }
967
968 check_header_oc(){
969     log check_header_oc "$@"
970     rm -f -- "$TMPO"
971     header=$1
972     shift
973     disable_safe $header
974     {
975        echo "#include <$header>"
976        echo "int main(void) { return 0; }"
977     } | check_oc && check_stat "$TMPO" && enable_safe $headers
978 }
979
980 check_func(){
981     log check_func "$@"
982     func=$1
983     shift
984     disable $func
985     check_ld "cc" "$@" <<EOF && enable $func
986 extern int $func();
987 int main(void){ $func(); }
988 EOF
989 }
990
991 check_mathfunc(){
992     log check_mathfunc "$@"
993     func=$1
994     narg=$2
995     shift 2
996     test $narg = 2 && args="f, g" || args="f"
997     disable $func
998     check_ld "cc" "$@" <<EOF && enable $func
999 #include <math.h>
1000 float foo(float f, float g) { return $func($args); }
1001 int main(void){ return (int) foo; }
1002 EOF
1003 }
1004
1005 check_func_headers(){
1006     log check_func_headers "$@"
1007     headers=$1
1008     funcs=$2
1009     shift 2
1010     {
1011         for hdr in $headers; do
1012             print_include $hdr
1013         done
1014         for func in $funcs; do
1015             echo "long check_$func(void) { return (long) $func; }"
1016         done
1017         echo "int main(void) { return 0; }"
1018     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1019 }
1020
1021 check_class_headers_cpp(){
1022     log check_class_headers_cpp "$@"
1023     headers=$1
1024     classes=$2
1025     shift 2
1026     {
1027         for hdr in $headers; do
1028             echo "#include <$hdr>"
1029         done
1030         echo "int main(void) { "
1031         i=1
1032         for class in $classes; do
1033             echo "$class obj$i;"
1034             i=$(expr $i + 1)
1035         done
1036         echo "return 0; }"
1037     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1038 }
1039
1040 check_cpp_condition(){
1041     log check_cpp_condition "$@"
1042     header=$1
1043     condition=$2
1044     shift 2
1045     check_cpp "$@" <<EOF
1046 #include <$header>
1047 #if !($condition)
1048 #error "unsatisfied condition: $condition"
1049 #endif
1050 EOF
1051 }
1052
1053 check_lib(){
1054     log check_lib "$@"
1055     header="$1"
1056     func="$2"
1057     shift 2
1058     check_header $header && check_func $func "$@" && add_extralibs "$@"
1059 }
1060
1061 check_lib2(){
1062     log check_lib2 "$@"
1063     headers="$1"
1064     funcs="$2"
1065     shift 2
1066     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1067 }
1068
1069 check_lib_cpp(){
1070     log check_lib_cpp "$@"
1071     headers="$1"
1072     classes="$2"
1073     shift 2
1074     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1075 }
1076
1077 check_pkg_config(){
1078     log check_pkg_config "$@"
1079     pkgandversion="$1"
1080     pkg="${1%% *}"
1081     headers="$2"
1082     funcs="$3"
1083     shift 3
1084     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1085     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1086     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1087     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1088         set_safe ${pkg}_cflags $pkg_cflags   &&
1089         set_safe ${pkg}_libs   $pkg_libs
1090 }
1091
1092 check_exec(){
1093     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1094 }
1095
1096 check_exec_crash(){
1097     code=$(cat)
1098
1099     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1100     # are safe but may not be available everywhere.  Thus we use
1101     # raise(SIGTERM) instead.  The check is run in a subshell so we
1102     # can redirect the "Terminated" message from the shell.  SIGBUS
1103     # is not defined by standard C so it is used conditionally.
1104
1105     (check_exec "$@") >> $logfile 2>&1 <<EOF
1106 #include <signal.h>
1107 static void sighandler(int sig){
1108     raise(SIGTERM);
1109 }
1110 int foo(void){
1111     $code
1112 }
1113 int (*func_ptr)(void) = foo;
1114 int main(void){
1115     signal(SIGILL, sighandler);
1116     signal(SIGFPE, sighandler);
1117     signal(SIGSEGV, sighandler);
1118 #ifdef SIGBUS
1119     signal(SIGBUS, sighandler);
1120 #endif
1121     return func_ptr();
1122 }
1123 EOF
1124 }
1125
1126 check_type(){
1127     log check_type "$@"
1128     headers=$1
1129     type=$2
1130     shift 2
1131     disable_safe "$type"
1132     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1133 }
1134
1135 check_struct(){
1136     log check_struct "$@"
1137     headers=$1
1138     struct=$2
1139     member=$3
1140     shift 3
1141     disable_safe "${struct}_${member}"
1142     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1143         enable_safe "${struct}_${member}"
1144 }
1145
1146 check_builtin(){
1147     log check_builtin "$@"
1148     name=$1
1149     headers=$2
1150     builtin=$3
1151     shift 3
1152     disable "$name"
1153     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1154 }
1155
1156 check_compile_assert(){
1157     log check_compile_assert "$@"
1158     name=$1
1159     headers=$2
1160     condition=$3
1161     shift 3
1162     disable "$name"
1163     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1164 }
1165
1166 require(){
1167     name="$1"
1168     header="$2"
1169     func="$3"
1170     shift 3
1171     check_lib $header $func "$@" || die "ERROR: $name not found"
1172 }
1173
1174 require2(){
1175     name="$1"
1176     headers="$2"
1177     func="$3"
1178     shift 3
1179     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1180 }
1181
1182 require_cpp(){
1183     name="$1"
1184     headers="$2"
1185     classes="$3"
1186     shift 3
1187     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require_pkg_config(){
1191     pkg="$1"
1192     check_pkg_config "$@" || die "ERROR: $pkg not found"
1193     add_cflags    $(get_safe ${pkg}_cflags)
1194     add_extralibs $(get_safe ${pkg}_libs)
1195 }
1196
1197 require_libfreetype(){
1198     log require_libfreetype "$@"
1199     pkg="freetype2"
1200     check_cmd $pkg_config --exists --print-errors $pkg \
1201       || die "ERROR: $pkg not found"
1202     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1203     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1204     {
1205         echo "#include <ft2build.h>"
1206         echo "#include FT_FREETYPE_H"
1207         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1208         echo "int main(void) { return 0; }"
1209     } | check_ld "cc" $pkg_cflags $pkg_libs \
1210       && set_safe ${pkg}_cflags $pkg_cflags \
1211       && set_safe ${pkg}_libs   $pkg_libs \
1212       || die "ERROR: $pkg not found"
1213     add_cflags    $(get_safe ${pkg}_cflags)
1214     add_extralibs $(get_safe ${pkg}_libs)
1215 }
1216
1217 hostcc_e(){
1218     eval printf '%s\\n' $HOSTCC_E
1219 }
1220
1221 hostcc_o(){
1222     eval printf '%s\\n' $HOSTCC_O
1223 }
1224
1225 check_host_cc(){
1226     log check_host_cc "$@"
1227     cat > $TMPC
1228     log_file $TMPC
1229     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1230 }
1231
1232 check_host_cpp(){
1233     log check_host_cpp "$@"
1234     cat > $TMPC
1235     log_file $TMPC
1236     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1237 }
1238
1239 check_host_cppflags(){
1240     log check_host_cppflags "$@"
1241     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1242 int x;
1243 EOF
1244 }
1245
1246 check_host_cflags(){
1247     log check_host_cflags "$@"
1248     set -- $($host_cflags_filter "$@")
1249     check_host_cc "$@" <<EOF && append host_cflags "$@"
1250 int x;
1251 EOF
1252 }
1253
1254 check_host_cpp_condition(){
1255     log check_host_cpp_condition "$@"
1256     header=$1
1257     condition=$2
1258     shift 2
1259     check_host_cpp "$@" <<EOF
1260 #include <$header>
1261 #if !($condition)
1262 #error "unsatisfied condition: $condition"
1263 #endif
1264 EOF
1265 }
1266
1267 apply(){
1268     file=$1
1269     shift
1270     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1271 }
1272
1273 cp_if_changed(){
1274     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1275     mkdir -p "$(dirname $2)"
1276     $cp_f "$1" "$2"
1277 }
1278
1279 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1280 # system-dependent things.
1281
1282 COMPONENT_LIST="
1283     bsfs
1284     decoders
1285     demuxers
1286     encoders
1287     filters
1288     hwaccels
1289     indevs
1290     muxers
1291     outdevs
1292     parsers
1293     protocols
1294 "
1295
1296 EXAMPLE_LIST="
1297     avio_reading_example
1298     decoding_encoding_example
1299     demuxing_decoding_example
1300     filter_audio_example
1301     filtering_audio_example
1302     filtering_video_example
1303     metadata_example
1304     muxing_example
1305     remuxing_example
1306     resampling_audio_example
1307     scaling_video_example
1308     transcode_aac_example
1309     transcoding_example
1310 "
1311
1312 EXTERNAL_LIBRARY_LIST="
1313     avisynth
1314     bzlib
1315     crystalhd
1316     decklink
1317     frei0r
1318     gnutls
1319     iconv
1320     ladspa
1321     libaacplus
1322     libass
1323     libbluray
1324     libbs2b
1325     libcaca
1326     libcdio
1327     libcelt
1328     libdc1394
1329     libfaac
1330     libfdk_aac
1331     libflite
1332     libfontconfig
1333     libfreetype
1334     libgme
1335     libgsm
1336     libiec61883
1337     libilbc
1338     libmodplug
1339     libmp3lame
1340     libnut
1341     libopencore_amrnb
1342     libopencore_amrwb
1343     libopencv
1344     libopenjpeg
1345     libopus
1346     libpulse
1347     libquvi
1348     librtmp
1349     libschroedinger
1350     libshine
1351     libsoxr
1352     libspeex
1353     libssh
1354     libstagefright_h264
1355     libtheora
1356     libtwolame
1357     libutvideo
1358     libv4l2
1359     libvidstab
1360     libvo_aacenc
1361     libvo_amrwbenc
1362     libvorbis
1363     libvpx
1364     libwavpack
1365     libwebp
1366     libx264
1367     libx265
1368     libxavs
1369     libxvid
1370     libzmq
1371     libzvbi
1372     openal
1373     opencl
1374     opengl
1375     openssl
1376     x11grab
1377     xlib
1378     zlib
1379 "
1380
1381 DOCUMENT_LIST="
1382     doc
1383     htmlpages
1384     manpages
1385     podpages
1386     txtpages
1387 "
1388
1389 FEATURE_LIST="
1390     ftrapv
1391     gray
1392     hardcoded_tables
1393     runtime_cpudetect
1394     safe_bitstream_reader
1395     shared
1396     small
1397     sram
1398     static
1399     swscale_alpha
1400 "
1401
1402 HWACCEL_LIST="
1403     dxva2
1404     vaapi
1405     vda
1406     vdpau
1407     xvmc
1408 "
1409
1410 LIBRARY_LIST="
1411     avcodec
1412     avdevice
1413     avfilter
1414     avformat
1415     avresample
1416     avutil
1417     postproc
1418     swresample
1419     swscale
1420 "
1421
1422 LICENSE_LIST="
1423     gpl
1424     nonfree
1425     version3
1426 "
1427
1428 PROGRAM_LIST="
1429     ffplay
1430     ffprobe
1431     ffserver
1432     ffmpeg
1433 "
1434
1435 SUBSYSTEM_LIST="
1436     dct
1437     dwt
1438     error_resilience
1439     fast_unaligned
1440     fft
1441     lsp
1442     lzo
1443     mdct
1444     network
1445     rdft
1446 "
1447
1448 CONFIG_LIST="
1449     $COMPONENT_LIST
1450     $DOCUMENT_LIST
1451     $EXAMPLE_LIST
1452     $EXTERNAL_LIBRARY_LIST
1453     $FEATURE_LIST
1454     $HWACCEL_LIST
1455     $LICENSE_LIST
1456     $LIBRARY_LIST
1457     $PROGRAM_LIST
1458     $SUBSYSTEM_LIST
1459     fontconfig
1460     incompatible_libav_abi
1461     memalign_hack
1462     memory_poisoning
1463     neon_clobber_test
1464     pic
1465     pod2man
1466     raise_major
1467     thumb
1468     xmm_clobber_test
1469 "
1470
1471 THREADS_LIST="
1472     pthreads
1473     os2threads
1474     w32threads
1475 "
1476
1477 ATOMICS_LIST="
1478     atomics_gcc
1479     atomics_suncc
1480     atomics_win32
1481 "
1482
1483 ARCH_LIST="
1484     aarch64
1485     alpha
1486     arm
1487     avr32
1488     avr32_ap
1489     avr32_uc
1490     bfin
1491     ia64
1492     m68k
1493     mips
1494     mips64
1495     parisc
1496     ppc
1497     ppc64
1498     s390
1499     sh4
1500     sparc
1501     sparc64
1502     tilegx
1503     tilepro
1504     tomi
1505     x86
1506     x86_32
1507     x86_64
1508 "
1509
1510 ARCH_EXT_LIST_ARM="
1511     armv5te
1512     armv6
1513     armv6t2
1514     armv8
1515     neon
1516     vfp
1517     vfpv3
1518 "
1519
1520 ARCH_EXT_LIST_MIPS="
1521     mipsfpu
1522     mips32r2
1523     mipsdspr1
1524     mipsdspr2
1525 "
1526
1527 ARCH_EXT_LIST_X86_SIMD="
1528     amd3dnow
1529     amd3dnowext
1530     avx
1531     avx2
1532     fma3
1533     fma4
1534     mmx
1535     mmxext
1536     sse
1537     sse2
1538     sse3
1539     sse4
1540     sse42
1541     ssse3
1542     xop
1543 "
1544
1545 ARCH_EXT_LIST_PPC="
1546     altivec
1547     dcbzl
1548     ldbrx
1549     ppc4xx
1550     vsx
1551 "
1552
1553 ARCH_EXT_LIST_X86="
1554     $ARCH_EXT_LIST_X86_SIMD
1555     cpunop
1556     i686
1557 "
1558
1559 ARCH_EXT_LIST="
1560     $ARCH_EXT_LIST_ARM
1561     $ARCH_EXT_LIST_PPC
1562     $ARCH_EXT_LIST_X86
1563     $ARCH_EXT_LIST_MIPS
1564     loongson
1565 "
1566
1567 ARCH_FEATURES="
1568     aligned_stack
1569     fast_64bit
1570     fast_clz
1571     fast_cmov
1572     local_aligned_8
1573     local_aligned_16
1574     local_aligned_32
1575 "
1576
1577 BUILTIN_LIST="
1578     atomic_cas_ptr
1579     machine_rw_barrier
1580     MemoryBarrier
1581     mm_empty
1582     rdtsc
1583     sarestart
1584     sync_val_compare_and_swap
1585 "
1586 HAVE_LIST_CMDLINE="
1587     inline_asm
1588     symver
1589     yasm
1590 "
1591
1592 HAVE_LIST_PUB="
1593     bigendian
1594     fast_unaligned
1595     incompatible_libav_abi
1596 "
1597
1598 HEADERS_LIST="
1599     alsa_asoundlib_h
1600     altivec_h
1601     arpa_inet_h
1602     asm_types_h
1603     cdio_paranoia_h
1604     cdio_paranoia_paranoia_h
1605     CL_cl_h
1606     dev_bktr_ioctl_bt848_h
1607     dev_bktr_ioctl_meteor_h
1608     dev_ic_bt8xx_h
1609     dev_video_bktr_ioctl_bt848_h
1610     dev_video_meteor_ioctl_meteor_h
1611     direct_h
1612     dlfcn_h
1613     dxva_h
1614     ES2_gl_h
1615     gsm_h
1616     io_h
1617     mach_mach_time_h
1618     machine_ioctl_bt848_h
1619     machine_ioctl_meteor_h
1620     malloc_h
1621     openjpeg_1_5_openjpeg_h
1622     OpenGL_gl3_h
1623     poll_h
1624     sndio_h
1625     soundcard_h
1626     sys_mman_h
1627     sys_param_h
1628     sys_resource_h
1629     sys_select_h
1630     sys_soundcard_h
1631     sys_time_h
1632     sys_un_h
1633     sys_videoio_h
1634     termios_h
1635     unistd_h
1636     windows_h
1637     winsock2_h
1638 "
1639
1640 MATH_FUNCS="
1641     atanf
1642     atan2f
1643     cbrt
1644     cbrtf
1645     cosf
1646     exp2
1647     exp2f
1648     expf
1649     fminf
1650     isinf
1651     isnan
1652     ldexpf
1653     llrint
1654     llrintf
1655     log2
1656     log2f
1657     log10f
1658     lrint
1659     lrintf
1660     powf
1661     rint
1662     round
1663     roundf
1664     sinf
1665     trunc
1666     truncf
1667 "
1668
1669 SYSTEM_FUNCS="
1670     access
1671     aligned_malloc
1672     clock_gettime
1673     closesocket
1674     CommandLineToArgvW
1675     CoTaskMemFree
1676     CryptGenRandom
1677     dlopen
1678     fcntl
1679     flt_lim
1680     fork
1681     getaddrinfo
1682     gethrtime
1683     getopt
1684     GetProcessAffinityMask
1685     GetProcessMemoryInfo
1686     GetProcessTimes
1687     getrusage
1688     getservbyport
1689     GetSystemTimeAsFileTime
1690     gettimeofday
1691     glob
1692     glXGetProcAddress
1693     inet_aton
1694     isatty
1695     jack_port_get_latency_range
1696     kbhit
1697     localtime_r
1698     lzo1x_999_compress
1699     mach_absolute_time
1700     MapViewOfFile
1701     memalign
1702     mkstemp
1703     mmap
1704     mprotect
1705     nanosleep
1706     PeekNamedPipe
1707     posix_memalign
1708     pthread_cancel
1709     sched_getaffinity
1710     SetConsoleTextAttribute
1711     setmode
1712     setrlimit
1713     Sleep
1714     strerror_r
1715     sysconf
1716     sysctl
1717     usleep
1718     VirtualAlloc
1719     wglGetProcAddress
1720 "
1721
1722 TOOLCHAIN_FEATURES="
1723     as_dn_directive
1724     as_func
1725     asm_mod_q
1726     attribute_may_alias
1727     attribute_packed
1728     ebp_available
1729     ebx_available
1730     gnu_as
1731     gnu_windres
1732     ibm_asm
1733     inline_asm_labels
1734     inline_asm_nonlocal_labels
1735     inline_asm_direct_symbol_refs
1736     pragma_deprecated
1737     rsync_contimeout
1738     symver_asm_label
1739     symver_gnu_asm
1740     vfp_args
1741     xform_asm
1742     xmm_clobbers
1743 "
1744
1745 TYPES_LIST="
1746     socklen_t
1747     struct_addrinfo
1748     struct_group_source_req
1749     struct_ip_mreq_source
1750     struct_ipv6_mreq
1751     struct_pollfd
1752     struct_rusage_ru_maxrss
1753     struct_sctp_event_subscribe
1754     struct_sockaddr_in6
1755     struct_sockaddr_sa_len
1756     struct_sockaddr_storage
1757     struct_stat_st_mtim_tv_nsec
1758     struct_v4l2_frmivalenum_discrete
1759 "
1760
1761 HAVE_LIST="
1762     $ARCH_EXT_LIST
1763     $(add_suffix _external $ARCH_EXT_LIST)
1764     $(add_suffix _inline   $ARCH_EXT_LIST)
1765     $ARCH_FEATURES
1766     $ATOMICS_LIST
1767     $BUILTIN_LIST
1768     $HAVE_LIST_CMDLINE
1769     $HAVE_LIST_PUB
1770     $HEADERS_LIST
1771     $MATH_FUNCS
1772     $SYSTEM_FUNCS
1773     $THREADS_LIST
1774     $TOOLCHAIN_FEATURES
1775     $TYPES_LIST
1776     atomics_native
1777     dos_paths
1778     dxva2api_cobj
1779     dxva2_lib
1780     libc_msvcrt
1781     libdc1394_1
1782     libdc1394_2
1783     makeinfo
1784     perl
1785     pod2man
1786     sdl
1787     texi2html
1788     threads
1789     vdpau_x11
1790     xlib
1791 "
1792
1793 # options emitted with CONFIG_ prefix but not available on the command line
1794 CONFIG_EXTRA="
1795     aandcttables
1796     ac3dsp
1797     audio_frame_queue
1798     audiodsp
1799     blockdsp
1800     bswapdsp
1801     cabac
1802     dsputil
1803     exif
1804     frame_thread_encoder
1805     gcrypt
1806     golomb
1807     gplv3
1808     h263dsp
1809     h264chroma
1810     h264dsp
1811     h264pred
1812     h264qpel
1813     hpeldsp
1814     huffman
1815     huffyuvdsp
1816     huffyuvencdsp
1817     intrax8
1818     lgplv3
1819     llauddsp
1820     llviddsp
1821     lpc
1822     mpeg_er
1823     mpegaudio
1824     mpegaudiodsp
1825     mpegvideo
1826     mpegvideoenc
1827     nettle
1828     qpeldsp
1829     rangecoder
1830     riffdec
1831     riffenc
1832     rtpdec
1833     rtpenc_chain
1834     sinewin
1835     tpeldsp
1836     videodsp
1837     vp3dsp
1838 "
1839
1840 CMDLINE_SELECT="
1841     $ARCH_EXT_LIST
1842     $CONFIG_LIST
1843     $HAVE_LIST_CMDLINE
1844     $THREADS_LIST
1845     asm
1846     cross_compile
1847     debug
1848     extra_warnings
1849     logging
1850     lto
1851     optimizations
1852     rpath
1853     stripping
1854 "
1855
1856 PATHS_LIST="
1857     bindir
1858     datadir
1859     docdir
1860     incdir
1861     libdir
1862     mandir
1863     prefix
1864     shlibdir
1865 "
1866
1867 CMDLINE_SET="
1868     $PATHS_LIST
1869     ar
1870     arch
1871     as
1872     assert_level
1873     build_suffix
1874     cc
1875     cpu
1876     cross_prefix
1877     cxx
1878     dep_cc
1879     extra_version
1880     gas
1881     host_cc
1882     host_cflags
1883     host_ld
1884     host_ldflags
1885     host_libs
1886     host_os
1887     install
1888     ld
1889     logfile
1890     malloc_prefix
1891     nm
1892     optflags
1893     pkg_config
1894     pkg_config_flags
1895     progs_suffix
1896     random_seed
1897     ranlib
1898     samples
1899     strip
1900     sws_max_filter_size
1901     sysinclude
1902     sysroot
1903     target_exec
1904     target_os
1905     target_path
1906     target_samples
1907     tempprefix
1908     toolchain
1909     valgrind
1910     yasmexe
1911 "
1912
1913 CMDLINE_APPEND="
1914     extra_cflags
1915     extra_cxxflags
1916     host_cppflags
1917 "
1918
1919 # code dependency declarations
1920
1921 # architecture extensions
1922
1923 armv5te_deps="arm"
1924 armv6_deps="arm"
1925 armv6t2_deps="arm"
1926 armv8_deps="aarch64"
1927 neon_deps_any="aarch64 arm"
1928 vfp_deps_any="aarch64 arm"
1929 vfpv3_deps="vfp"
1930
1931 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1932
1933 mipsfpu_deps="mips"
1934 mips32r2_deps="mips"
1935 mipsdspr1_deps="mips"
1936 mipsdspr2_deps="mips"
1937
1938 altivec_deps="ppc"
1939 ppc4xx_deps="ppc"
1940 vsx_deps="ppc"
1941
1942 cpunop_deps="i686"
1943 x86_64_select="i686"
1944 x86_64_suggest="fast_cmov"
1945
1946 amd3dnow_deps="mmx"
1947 amd3dnowext_deps="amd3dnow"
1948 i686_deps="x86"
1949 mmx_deps="x86"
1950 mmxext_deps="mmx"
1951 sse_deps="mmxext"
1952 sse2_deps="sse"
1953 sse3_deps="sse2"
1954 ssse3_deps="sse3"
1955 sse4_deps="ssse3"
1956 sse42_deps="sse4"
1957 avx_deps="sse42"
1958 xop_deps="avx"
1959 fma3_deps="avx"
1960 fma4_deps="avx"
1961 avx2_deps="avx"
1962
1963 mmx_external_deps="yasm"
1964 mmx_inline_deps="inline_asm"
1965 mmx_suggest="mmx_external mmx_inline"
1966
1967 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1968     eval dep=\$${ext}_deps
1969     eval ${ext}_external_deps='"${dep}_external"'
1970     eval ${ext}_inline_deps='"${dep}_inline"'
1971     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1972 done
1973
1974 aligned_stack_if_any="aarch64 ppc x86"
1975 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1976 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1977 fast_unaligned_if_any="aarch64 ppc x86"
1978
1979 need_memalign="altivec neon sse"
1980
1981 # system capabilities
1982
1983 symver_if_any="symver_asm_label symver_gnu_asm"
1984
1985 # threading support
1986 atomics_gcc_if="sync_val_compare_and_swap"
1987 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1988 atomics_win32_if="MemoryBarrier"
1989 atomics_native_if_any="$ATOMICS_LIST"
1990 w32threads_deps="atomics_native"
1991 threads_if_any="$THREADS_LIST"
1992
1993 # subsystems
1994 dct_select="rdft"
1995 error_resilience_select="dsputil"
1996 frame_thread_encoder_deps="encoders threads"
1997 intrax8_select="error_resilience"
1998 mdct_select="fft"
1999 rdft_select="fft"
2000 mpeg_er_select="error_resilience"
2001 mpegaudio_select="mpegaudiodsp"
2002 mpegaudiodsp_select="dct"
2003 mpegvideo_select="blockdsp dsputil h264chroma hpeldsp videodsp"
2004 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
2005
2006 # decoders / encoders
2007 aac_decoder_select="mdct sinewin"
2008 aac_encoder_select="audio_frame_queue mdct sinewin"
2009 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2010 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2011 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2012 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
2013 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
2014 aic_decoder_select="dsputil golomb"
2015 alac_encoder_select="lpc"
2016 als_decoder_select="bswapdsp"
2017 amrnb_decoder_select="lsp"
2018 amrwb_decoder_select="lsp"
2019 amv_decoder_select="sp5x_decoder exif"
2020 amv_encoder_select="aandcttables"
2021 ape_decoder_select="bswapdsp llauddsp"
2022 asv1_decoder_select="blockdsp bswapdsp dsputil"
2023 asv1_encoder_select="bswapdsp dsputil"
2024 asv2_decoder_select="blockdsp bswapdsp dsputil"
2025 asv2_encoder_select="bswapdsp dsputil"
2026 atrac1_decoder_select="mdct sinewin"
2027 atrac3_decoder_select="mdct"
2028 atrac3p_decoder_select="mdct sinewin"
2029 avrn_decoder_select="exif"
2030 bink_decoder_select="blockdsp hpeldsp"
2031 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2032 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2033 cavs_decoder_select="blockdsp dsputil golomb h264chroma qpeldsp videodsp"
2034 cllc_decoder_select="bswapdsp"
2035 comfortnoise_encoder_select="lpc"
2036 cook_decoder_select="audiodsp mdct sinewin"
2037 cscd_decoder_select="lzo"
2038 cscd_decoder_suggest="zlib"
2039 dca_decoder_select="mdct"
2040 dirac_decoder_select="dsputil dwt golomb videodsp"
2041 dnxhd_decoder_select="blockdsp dsputil"
2042 dnxhd_encoder_select="aandcttables blockdsp dsputil mpegvideoenc"
2043 dvvideo_decoder_select="dsputil"
2044 dvvideo_encoder_select="dsputil"
2045 dxa_decoder_select="zlib"
2046 eac3_decoder_select="ac3_decoder"
2047 eac3_encoder_select="ac3_encoder"
2048 eamad_decoder_select="aandcttables blockdsp bswapdsp dsputil mpegvideo"
2049 eatgq_decoder_select="aandcttables"
2050 eatqi_decoder_select="aandcttables blockdsp bswapdsp dsputil mpeg1video_decoder"
2051 exr_decoder_select="zlib"
2052 ffv1_decoder_select="golomb rangecoder"
2053 ffv1_encoder_select="rangecoder"
2054 ffvhuff_decoder_select="huffyuv_decoder"
2055 ffvhuff_encoder_select="huffyuv_encoder"
2056 fic_decoder_select="golomb"
2057 flac_decoder_select="golomb"
2058 flac_encoder_select="bswapdsp golomb lpc"
2059 flashsv_decoder_select="zlib"
2060 flashsv_encoder_select="zlib"
2061 flashsv2_encoder_select="zlib"
2062 flashsv2_decoder_select="zlib"
2063 flv_decoder_select="h263_decoder"
2064 flv_encoder_select="h263_encoder"
2065 fourxm_decoder_select="blockdsp bswapdsp"
2066 fraps_decoder_select="bswapdsp huffman"
2067 g2m_decoder_select="blockdsp dsputil zlib"
2068 g729_decoder_select="audiodsp"
2069 h261_decoder_select="mpeg_er mpegvideo"
2070 h261_encoder_select="aandcttables mpegvideoenc"
2071 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2072 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2073 h263i_decoder_select="h263_decoder"
2074 h263p_encoder_select="h263_encoder"
2075 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2076 h264_decoder_suggest="error_resilience"
2077 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2078 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2079 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2080 iac_decoder_select="imc_decoder"
2081 imc_decoder_select="bswapdsp fft mdct sinewin"
2082 indeo3_decoder_select="hpeldsp"
2083 interplay_video_decoder_select="hpeldsp"
2084 jpegls_decoder_select="golomb mjpeg_decoder"
2085 jpegls_encoder_select="golomb"
2086 jv_decoder_select="blockdsp"
2087 lagarith_decoder_select="huffyuvdsp"
2088 ljpeg_encoder_select="aandcttables mpegvideoenc"
2089 loco_decoder_select="golomb"
2090 mdec_decoder_select="blockdsp dsputil mpegvideo"
2091 metasound_decoder_select="lsp mdct sinewin"
2092 mimic_decoder_select="blockdsp bswapdsp dsputil hpeldsp"
2093 mjpeg_decoder_select="blockdsp dsputil hpeldsp exif"
2094 mjpeg_encoder_select="aandcttables mpegvideoenc"
2095 mjpegb_decoder_select="mjpeg_decoder"
2096 mlp_decoder_select="mlp_parser"
2097 motionpixels_decoder_select="bswapdsp"
2098 mp1_decoder_select="mpegaudio"
2099 mp1float_decoder_select="mpegaudio"
2100 mp2_decoder_select="mpegaudio"
2101 mp2float_decoder_select="mpegaudio"
2102 mp3_decoder_select="mpegaudio"
2103 mp3adu_decoder_select="mpegaudio"
2104 mp3adufloat_decoder_select="mpegaudio"
2105 mp3float_decoder_select="mpegaudio"
2106 mp3on4_decoder_select="mpegaudio"
2107 mp3on4float_decoder_select="mpegaudio"
2108 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2109 mpc8_decoder_select="mpegaudiodsp"
2110 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2111 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2112 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2113 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2114 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2115 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2116 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2117 mpeg4_encoder_select="h263_encoder"
2118 msmpeg4v1_decoder_select="h263_decoder"
2119 msmpeg4v2_decoder_select="h263_decoder"
2120 msmpeg4v2_encoder_select="h263_encoder"
2121 msmpeg4v3_decoder_select="h263_decoder"
2122 msmpeg4v3_encoder_select="h263_encoder"
2123 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2124 mxpeg_decoder_select="mjpeg_decoder"
2125 nellymoser_decoder_select="mdct sinewin"
2126 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2127 nuv_decoder_select="dsputil lzo"
2128 on2avc_decoder_select="mdct"
2129 opus_decoder_deps="swresample"
2130 png_decoder_select="zlib"
2131 png_encoder_select="huffyuvencdsp zlib"
2132 prores_decoder_select="blockdsp dsputil"
2133 prores_encoder_select="dsputil"
2134 qcelp_decoder_select="lsp"
2135 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2136 ra_144_encoder_select="audio_frame_queue lpc"
2137 ralf_decoder_select="golomb"
2138 rawvideo_decoder_select="dsputil"
2139 rtjpeg_decoder_select="dsputil"
2140 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2141 rv10_encoder_select="h263_encoder"
2142 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2143 rv20_encoder_select="h263_encoder"
2144 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2145 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2146 shorten_decoder_select="golomb"
2147 sipr_decoder_select="lsp"
2148 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2149 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2150 sonic_decoder_select="golomb rangecoder"
2151 sonic_encoder_select="golomb rangecoder"
2152 sonic_ls_encoder_select="golomb rangecoder"
2153 sp5x_decoder_select="mjpeg_decoder"
2154 svq1_decoder_select="hpeldsp"
2155 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2156 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2157 svq3_decoder_suggest="zlib"
2158 tak_decoder_select="audiodsp"
2159 theora_decoder_select="vp3_decoder"
2160 thp_decoder_select="mjpeg_decoder"
2161 tiff_decoder_suggest="zlib"
2162 tiff_encoder_suggest="zlib"
2163 truehd_decoder_select="mlp_parser"
2164 truemotion2_decoder_select="bswapdsp"
2165 truespeech_decoder_select="bswapdsp"
2166 tscc_decoder_select="zlib"
2167 twinvq_decoder_select="mdct lsp sinewin"
2168 utvideo_decoder_select="bswapdsp"
2169 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2170 vble_decoder_select="huffyuvdsp"
2171 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
2172 vc1image_decoder_select="vc1_decoder"
2173 vorbis_decoder_select="mdct"
2174 vorbis_encoder_select="mdct"
2175 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2176 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2177 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2178 vp6a_decoder_select="vp6_decoder"
2179 vp6f_decoder_select="vp6_decoder"
2180 vp7_decoder_select="h264pred videodsp"
2181 vp8_decoder_select="h264pred videodsp"
2182 vp9_decoder_select="videodsp vp9_parser"
2183 webp_decoder_select="vp8_decoder"
2184 wmalossless_decoder_select="llauddsp"
2185 wmapro_decoder_select="mdct sinewin"
2186 wmav1_decoder_select="mdct sinewin"
2187 wmav1_encoder_select="mdct sinewin"
2188 wmav2_decoder_select="mdct sinewin"
2189 wmav2_encoder_select="mdct sinewin"
2190 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2191 wmv1_decoder_select="h263_decoder"
2192 wmv1_encoder_select="h263_encoder"
2193 wmv2_decoder_select="blockdsp h263_decoder intrax8 videodsp"
2194 wmv2_encoder_select="h263_encoder"
2195 wmv3_decoder_select="vc1_decoder"
2196 wmv3image_decoder_select="wmv3_decoder"
2197 zerocodec_decoder_select="zlib"
2198 zlib_decoder_select="zlib"
2199 zlib_encoder_select="zlib"
2200 zmbv_decoder_select="zlib"
2201 zmbv_encoder_select="zlib"
2202
2203 # hardware accelerators
2204 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2205 dxva2_deps="dxva2api_h"
2206 vaapi_deps="va_va_h"
2207 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2208 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2209 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2210 xvmc_deps="X11_extensions_XvMClib_h"
2211
2212 h263_vaapi_hwaccel_deps="vaapi"
2213 h263_vaapi_hwaccel_select="h263_decoder"
2214 h263_vdpau_hwaccel_deps="vdpau"
2215 h263_vdpau_hwaccel_select="h263_decoder"
2216 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2217 h264_dxva2_hwaccel_deps="dxva2"
2218 h264_dxva2_hwaccel_select="h264_decoder"
2219 h264_vaapi_hwaccel_deps="vaapi"
2220 h264_vaapi_hwaccel_select="h264_decoder"
2221 h264_vda_decoder_deps="vda"
2222 h264_vda_decoder_select="h264_decoder"
2223 h264_vda_hwaccel_deps="vda"
2224 h264_vda_hwaccel_select="h264_decoder"
2225 h264_vda_old_hwaccel_deps="vda"
2226 h264_vda_old_hwaccel_select="h264_decoder"
2227 h264_vdpau_decoder_deps="vdpau"
2228 h264_vdpau_decoder_select="h264_decoder"
2229 h264_vdpau_hwaccel_deps="vdpau"
2230 h264_vdpau_hwaccel_select="h264_decoder"
2231 mpeg_vdpau_decoder_deps="vdpau"
2232 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2233 mpeg_xvmc_hwaccel_deps="xvmc"
2234 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2235 mpeg1_vdpau_decoder_deps="vdpau"
2236 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2237 mpeg1_vdpau_hwaccel_deps="vdpau"
2238 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2239 mpeg1_xvmc_hwaccel_deps="xvmc"
2240 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2241 mpeg2_crystalhd_decoder_select="crystalhd"
2242 mpeg2_dxva2_hwaccel_deps="dxva2"
2243 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2244 mpeg2_vaapi_hwaccel_deps="vaapi"
2245 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2246 mpeg2_vdpau_hwaccel_deps="vdpau"
2247 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2248 mpeg2_xvmc_hwaccel_deps="xvmc"
2249 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2250 mpeg4_crystalhd_decoder_select="crystalhd"
2251 mpeg4_vaapi_hwaccel_deps="vaapi"
2252 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2253 mpeg4_vdpau_decoder_deps="vdpau"
2254 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2255 mpeg4_vdpau_hwaccel_deps="vdpau"
2256 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2257 msmpeg4_crystalhd_decoder_select="crystalhd"
2258 vc1_crystalhd_decoder_select="crystalhd"
2259 vc1_dxva2_hwaccel_deps="dxva2"
2260 vc1_dxva2_hwaccel_select="vc1_decoder"
2261 vc1_vaapi_hwaccel_deps="vaapi"
2262 vc1_vaapi_hwaccel_select="vc1_decoder"
2263 vc1_vdpau_decoder_deps="vdpau"
2264 vc1_vdpau_decoder_select="vc1_decoder"
2265 vc1_vdpau_hwaccel_deps="vdpau"
2266 vc1_vdpau_hwaccel_select="vc1_decoder"
2267 wmv3_crystalhd_decoder_select="crystalhd"
2268 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2269 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2270 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2271 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2272
2273 # parsers
2274 h264_parser_select="h264_decoder"
2275 hevc_parser_select="hevc_decoder"
2276 mpegvideo_parser_select="mpegvideo"
2277 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2278 vc1_parser_select="mpegvideo vc1_decoder"
2279
2280 # external libraries
2281 libaacplus_encoder_deps="libaacplus"
2282 libcelt_decoder_deps="libcelt"
2283 libfaac_encoder_deps="libfaac"
2284 libfaac_encoder_select="audio_frame_queue"
2285 libfdk_aac_decoder_deps="libfdk_aac"
2286 libfdk_aac_encoder_deps="libfdk_aac"
2287 libfdk_aac_encoder_select="audio_frame_queue"
2288 libgme_demuxer_deps="libgme"
2289 libgsm_decoder_deps="libgsm"
2290 libgsm_encoder_deps="libgsm"
2291 libgsm_ms_decoder_deps="libgsm"
2292 libgsm_ms_encoder_deps="libgsm"
2293 libilbc_decoder_deps="libilbc"
2294 libilbc_encoder_deps="libilbc"
2295 libmodplug_demuxer_deps="libmodplug"
2296 libmp3lame_encoder_deps="libmp3lame"
2297 libmp3lame_encoder_select="audio_frame_queue"
2298 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2299 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2300 libopencore_amrnb_encoder_select="audio_frame_queue"
2301 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2302 libopenjpeg_decoder_deps="libopenjpeg"
2303 libopenjpeg_encoder_deps="libopenjpeg"
2304 libopus_decoder_deps="libopus"
2305 libopus_encoder_deps="libopus"
2306 libopus_encoder_select="audio_frame_queue"
2307 libquvi_demuxer_deps="libquvi"
2308 libschroedinger_decoder_deps="libschroedinger"
2309 libschroedinger_encoder_deps="libschroedinger"
2310 libshine_encoder_deps="libshine"
2311 libshine_encoder_select="audio_frame_queue"
2312 libspeex_decoder_deps="libspeex"
2313 libspeex_encoder_deps="libspeex"
2314 libspeex_encoder_select="audio_frame_queue"
2315 libstagefright_h264_decoder_deps="libstagefright_h264"
2316 libtheora_encoder_deps="libtheora"
2317 libtwolame_encoder_deps="libtwolame"
2318 libvo_aacenc_encoder_deps="libvo_aacenc"
2319 libvo_aacenc_encoder_select="audio_frame_queue"
2320 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2321 libvorbis_decoder_deps="libvorbis"
2322 libvorbis_encoder_deps="libvorbis"
2323 libvorbis_encoder_select="audio_frame_queue"
2324 libvpx_vp8_decoder_deps="libvpx"
2325 libvpx_vp8_encoder_deps="libvpx"
2326 libvpx_vp9_decoder_deps="libvpx"
2327 libvpx_vp9_encoder_deps="libvpx"
2328 libwavpack_encoder_deps="libwavpack"
2329 libwebp_encoder_deps="libwebp"
2330 libx264_encoder_deps="libx264"
2331 libx264rgb_encoder_deps="libx264"
2332 libx265_encoder_deps="libx265"
2333 libxavs_encoder_deps="libxavs"
2334 libxvid_encoder_deps="libxvid"
2335 libutvideo_decoder_deps="libutvideo"
2336 libutvideo_encoder_deps="libutvideo"
2337 libzvbi_teletext_decoder_deps="libzvbi"
2338
2339 # demuxers / muxers
2340 ac3_demuxer_select="ac3_parser"
2341 asf_demuxer_select="riffdec"
2342 asf_muxer_select="riffenc"
2343 asf_stream_muxer_select="asf_muxer"
2344 avi_demuxer_select="riffdec exif"
2345 avi_muxer_select="riffenc"
2346 avisynth_demuxer_deps="avisynth"
2347 avisynth_demuxer_select="riffdec"
2348 caf_demuxer_select="riffdec"
2349 dirac_demuxer_select="dirac_parser"
2350 dts_demuxer_select="dca_parser"
2351 dtshd_demuxer_select="dca_parser"
2352 dxa_demuxer_select="riffdec"
2353 eac3_demuxer_select="ac3_parser"
2354 f4v_muxer_select="mov_muxer"
2355 flac_demuxer_select="flac_parser"
2356 hds_muxer_select="flv_muxer"
2357 hls_muxer_select="mpegts_muxer"
2358 image2_alias_pix_demuxer_select="image2_demuxer"
2359 image2_brender_pix_demuxer_select="image2_demuxer"
2360 ipod_muxer_select="mov_muxer"
2361 ismv_muxer_select="mov_muxer"
2362 libnut_demuxer_deps="libnut"
2363 libnut_muxer_deps="libnut"
2364 matroska_audio_muxer_select="matroska_muxer"
2365 matroska_demuxer_select="riffdec"
2366 matroska_demuxer_suggest="bzlib lzo zlib"
2367 matroska_muxer_select="riffenc"
2368 mmf_muxer_select="riffenc"
2369 mov_demuxer_select="riffdec"
2370 mov_demuxer_suggest="zlib"
2371 mov_muxer_select="riffenc rtpenc_chain"
2372 mp3_demuxer_select="mpegaudio_parser"
2373 mp4_muxer_select="mov_muxer"
2374 mpegts_muxer_select="adts_muxer latm_muxer"
2375 mpegtsraw_demuxer_select="mpegts_demuxer"
2376 mxf_d10_muxer_select="mxf_muxer"
2377 nut_muxer_select="riffenc"
2378 nuv_demuxer_select="riffdec"
2379 ogg_demuxer_select="golomb"
2380 psp_muxer_select="mov_muxer"
2381 rtp_demuxer_select="sdp_demuxer"
2382 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2383 rtsp_demuxer_select="http_protocol rtpdec"
2384 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2385 sap_demuxer_select="sdp_demuxer"
2386 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2387 sdp_demuxer_select="rtpdec"
2388 smoothstreaming_muxer_select="ismv_muxer"
2389 spdif_muxer_select="aac_parser"
2390 tak_demuxer_select="tak_parser"
2391 tg2_muxer_select="mov_muxer"
2392 tgp_muxer_select="mov_muxer"
2393 vobsub_demuxer_select="mpegps_demuxer"
2394 w64_demuxer_select="wav_demuxer"
2395 w64_muxer_select="wav_muxer"
2396 wav_demuxer_select="riffdec"
2397 wav_muxer_select="riffenc"
2398 webm_muxer_select="riffenc"
2399 wtv_demuxer_select="riffdec"
2400 wtv_muxer_select="riffenc"
2401 xmv_demuxer_select="riffdec"
2402 xwma_demuxer_select="riffdec"
2403
2404 # indevs / outdevs
2405 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2406 alsa_outdev_deps="alsa_asoundlib_h"
2407 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2408 avfoundation_indev_select="avfoundation"
2409 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2410 caca_outdev_deps="libcaca"
2411 decklink_outdev_deps="decklink pthreads"
2412 decklink_outdev_extralibs="-lstdc++"
2413 dshow_indev_deps="IBaseFilter"
2414 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2415 dv1394_indev_deps="dv1394"
2416 dv1394_indev_select="dv_demuxer"
2417 fbdev_indev_deps="linux_fb_h"
2418 fbdev_outdev_deps="linux_fb_h"
2419 gdigrab_indev_deps="CreateDIBSection"
2420 gdigrab_indev_extralibs="-lgdi32"
2421 gdigrab_indev_select="bmp_decoder"
2422 iec61883_indev_deps="libiec61883"
2423 jack_indev_deps="jack_jack_h sem_timedwait"
2424 lavfi_indev_deps="avfilter"
2425 libcdio_indev_deps="libcdio"
2426 libdc1394_indev_deps="libdc1394"
2427 libv4l2_indev_deps="libv4l2"
2428 openal_indev_deps="openal"
2429 opengl_outdev_deps="opengl"
2430 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2431 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2432 pulse_indev_deps="libpulse"
2433 pulse_outdev_deps="libpulse"
2434 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2435 qtkit_indev_select="qtkit"
2436 sdl_outdev_deps="sdl"
2437 sndio_indev_deps="sndio_h"
2438 sndio_outdev_deps="sndio_h"
2439 v4l_indev_deps="linux_videodev_h"
2440 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2441 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2442 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2443 vfwcap_indev_extralibs="-lavicap32"
2444 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2445 xv_outdev_extralibs="-lXv -lX11 -lXext"
2446 x11grab_indev_deps="x11grab"
2447
2448 # protocols
2449 bluray_protocol_deps="libbluray"
2450 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2451 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2452 ffrtmpcrypt_protocol_select="tcp_protocol"
2453 ffrtmphttp_protocol_deps="!librtmp_protocol"
2454 ffrtmphttp_protocol_select="http_protocol"
2455 ftp_protocol_select="tcp_protocol"
2456 gopher_protocol_select="network"
2457 http_protocol_select="tcp_protocol"
2458 httpproxy_protocol_select="tcp_protocol"
2459 https_protocol_select="tls_protocol"
2460 librtmp_protocol_deps="librtmp"
2461 librtmpe_protocol_deps="librtmp"
2462 librtmps_protocol_deps="librtmp"
2463 librtmpt_protocol_deps="librtmp"
2464 librtmpte_protocol_deps="librtmp"
2465 libssh_protocol_deps="libssh"
2466 mmsh_protocol_select="http_protocol"
2467 mmst_protocol_select="network"
2468 rtmp_protocol_deps="!librtmp_protocol"
2469 rtmp_protocol_select="tcp_protocol"
2470 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2471 rtmps_protocol_deps="!librtmp_protocol"
2472 rtmps_protocol_select="tls_protocol"
2473 rtmpt_protocol_select="ffrtmphttp_protocol"
2474 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2475 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2476 rtp_protocol_select="udp_protocol"
2477 sctp_protocol_deps="struct_sctp_event_subscribe"
2478 sctp_protocol_select="network"
2479 srtp_protocol_select="rtp_protocol"
2480 tcp_protocol_select="network"
2481 tls_protocol_deps_any="openssl gnutls"
2482 tls_protocol_select="tcp_protocol"
2483 udp_protocol_select="network"
2484 unix_protocol_deps="sys_un_h"
2485 unix_protocol_select="network"
2486
2487 # filters
2488 aconvert_filter_deps="swresample"
2489 amovie_filter_deps="avcodec avformat"
2490 aresample_filter_deps="swresample"
2491 ass_filter_deps="libass"
2492 asyncts_filter_deps="avresample"
2493 atempo_filter_deps="avcodec"
2494 atempo_filter_select="rdft"
2495 azmq_filter_deps="libzmq"
2496 blackframe_filter_deps="gpl"
2497 boxblur_filter_deps="gpl"
2498 bs2b_filter_deps="libbs2b"
2499 colormatrix_filter_deps="gpl"
2500 cropdetect_filter_deps="gpl"
2501 dctdnoiz_filter_deps="avcodec"
2502 dctdnoiz_filter_select="dct"
2503 delogo_filter_deps="gpl"
2504 deshake_filter_deps="avcodec"
2505 deshake_filter_select="dsputil"
2506 drawtext_filter_deps="libfreetype"
2507 ebur128_filter_deps="gpl"
2508 flite_filter_deps="libflite"
2509 frei0r_filter_deps="frei0r dlopen"
2510 frei0r_filter_extralibs='$ldl'
2511 frei0r_src_filter_deps="frei0r dlopen"
2512 frei0r_src_filter_extralibs='$ldl'
2513 geq_filter_deps="gpl"
2514 histeq_filter_deps="gpl"
2515 hqdn3d_filter_deps="gpl"
2516 interlace_filter_deps="gpl"
2517 kerndeint_filter_deps="gpl"
2518 ladspa_filter_deps="ladspa dlopen"
2519 ladspa_filter_extralibs='$ldl'
2520 mcdeint_filter_deps="avcodec gpl"
2521 movie_filter_deps="avcodec avformat"
2522 mp_filter_deps="gpl avcodec swscale inline_asm"
2523 mpdecimate_filter_deps="gpl avcodec"
2524 mptestsrc_filter_deps="gpl"
2525 negate_filter_deps="lut_filter"
2526 perspective_filter_deps="gpl"
2527 ocv_filter_deps="libopencv"
2528 owdenoise_filter_deps="gpl"
2529 pan_filter_deps="swresample"
2530 phase_filter_deps="gpl"
2531 pp_filter_deps="gpl postproc"
2532 pullup_filter_deps="gpl"
2533 removelogo_filter_deps="avcodec avformat swscale"
2534 resample_filter_deps="avresample"
2535 sab_filter_deps="gpl swscale"
2536 scale_filter_deps="swscale"
2537 smartblur_filter_deps="gpl swscale"
2538 showspectrum_filter_deps="avcodec"
2539 showspectrum_filter_select="rdft"
2540 spp_filter_deps="gpl avcodec"
2541 spp_filter_select="fft"
2542 stereo3d_filter_deps="gpl"
2543 subtitles_filter_deps="avformat avcodec libass"
2544 super2xsai_filter_deps="gpl"
2545 tinterlace_filter_deps="gpl"
2546 vidstabdetect_filter_deps="libvidstab"
2547 vidstabtransform_filter_deps="libvidstab"
2548 pixfmts_super2xsai_test_deps="super2xsai_filter"
2549 tinterlace_merge_test_deps="tinterlace_filter"
2550 tinterlace_pad_test_deps="tinterlace_filter"
2551 zmq_filter_deps="libzmq"
2552 zoompan_filter_deps="swscale"
2553
2554 # examples
2555 avio_reading="avformat avcodec avutil"
2556 avcodec_example_deps="avcodec avutil"
2557 demuxing_decoding_example_deps="avcodec avformat avutil"
2558 filter_audio_example_deps="avfilter avutil"
2559 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2560 filtering_video_example_deps="avfilter avcodec avformat avutil"
2561 metadata_example_deps="avformat avutil"
2562 muxing_example_deps="avcodec avformat avutil swscale"
2563 remuxing_example_deps="avcodec avformat avutil"
2564 resampling_audio_example_deps="avutil swresample"
2565 scaling_video_example_deps="avutil swscale"
2566 transcode_aac_example_deps="avcodec avformat swresample"
2567 transcoding_example_deps="avfilter avcodec avformat avutil"
2568
2569 # libraries, in linking order
2570 avcodec_deps="avutil"
2571 avdevice_deps="avformat avcodec avutil"
2572 avfilter_deps="avutil"
2573 avformat_deps="avcodec avutil"
2574 avresample_deps="avutil"
2575 postproc_deps="avutil gpl"
2576 swresample_deps="avutil"
2577 swscale_deps="avutil"
2578
2579 # programs
2580 ffmpeg_deps="avcodec avfilter avformat swresample"
2581 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2582                null_filter
2583                setpts_filter trim_filter"
2584 ffplay_deps="avcodec avformat swscale swresample sdl"
2585 ffplay_libs='$sdl_libs'
2586 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2587 ffprobe_deps="avcodec avformat"
2588 ffserver_deps="avformat fork sarestart"
2589 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2590
2591 # documentation
2592 podpages_deps="perl"
2593 manpages_deps="perl pod2man"
2594 htmlpages_deps="perl texi2html"
2595 txtpages_deps="perl makeinfo"
2596 doc_deps_any="manpages htmlpages podpages txtpages"
2597
2598 # default parameters
2599
2600 logfile="config.log"
2601
2602 # installation paths
2603 prefix_default="/usr/local"
2604 bindir_default='${prefix}/bin'
2605 datadir_default='${prefix}/share/ffmpeg'
2606 docdir_default='${prefix}/share/doc/ffmpeg'
2607 incdir_default='${prefix}/include'
2608 libdir_default='${prefix}/lib'
2609 mandir_default='${prefix}/share/man'
2610 shlibdir_default="$libdir_default"
2611
2612 # toolchain
2613 ar_default="ar"
2614 cc_default="gcc"
2615 cxx_default="g++"
2616 host_cc_default="gcc"
2617 cp_f="cp -f"
2618 install="install"
2619 ln_s="ln -s -f"
2620 nm_default="nm -g"
2621 objformat="elf"
2622 pkg_config_default=pkg-config
2623 ranlib_default="ranlib"
2624 strip_default="strip"
2625 yasmexe_default="yasm"
2626 windres_default="windres"
2627
2628 nogas=":"
2629
2630 # OS
2631 target_os_default=$(tolower $(uname -s))
2632 host_os=$target_os_default
2633
2634 # machine
2635 if test "$target_os_default" = aix; then
2636     arch_default=$(uname -p)
2637     strip_default="strip -X32_64"
2638 else
2639     arch_default=$(uname -m)
2640 fi
2641 cpu="generic"
2642
2643 # configurable options
2644 enable $PROGRAM_LIST
2645 enable $DOCUMENT_LIST
2646 enable $EXAMPLE_LIST
2647 enable $(filter_out avresample $LIBRARY_LIST)
2648 enable stripping
2649
2650 enable asm
2651 enable debug
2652 enable doc
2653 enable optimizations
2654 enable runtime_cpudetect
2655 enable safe_bitstream_reader
2656 enable static
2657 enable swscale_alpha
2658
2659 sws_max_filter_size_default=256
2660 set_default sws_max_filter_size
2661
2662 # Enable hwaccels by default.
2663 enable dxva2 vaapi vda vdpau xvmc
2664 enable xlib
2665
2666 # build settings
2667 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2668 LIBPREF="lib"
2669 LIBSUF=".a"
2670 FULLNAME='$(NAME)$(BUILDSUF)'
2671 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2672 SLIBPREF="lib"
2673 SLIBSUF=".so"
2674 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2675 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2676 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2677 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2678 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2679 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2680
2681 asflags_filter=echo
2682 cflags_filter=echo
2683 ldflags_filter=echo
2684
2685 AS_C='-c'
2686 AS_O='-o $@'
2687 CC_C='-c'
2688 CC_E='-E -o $@'
2689 CC_O='-o $@'
2690 CXX_C='-c'
2691 CXX_O='-o $@'
2692 LD_O='-o $@'
2693 LD_LIB='-l%'
2694 LD_PATH='-L'
2695 HOSTCC_C='-c'
2696 HOSTCC_E='-E -o $@'
2697 HOSTCC_O='-o $@'
2698 HOSTLD_O='-o $@'
2699
2700 host_libs='-lm'
2701 host_cflags_filter=echo
2702 host_ldflags_filter=echo
2703
2704 target_path='$(CURDIR)'
2705
2706 # since the object filename is not given with the -MM flag, the compiler
2707 # is only able to print the basename, and we must add the path ourselves
2708 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2709 DEPFLAGS='-MM'
2710
2711 # find source path
2712 if test -f configure; then
2713     source_path=.
2714 else
2715     source_path=$(cd $(dirname "$0"); pwd)
2716     echo "$source_path" | grep -q '[[:blank:]]' &&
2717         die "Out of tree builds are impossible with whitespace in source path."
2718     test -e "$source_path/config.h" &&
2719         die "Out of tree builds are impossible with config.h in source dir."
2720 fi
2721
2722 for v in "$@"; do
2723     r=${v#*=}
2724     l=${v%"$r"}
2725     r=$(sh_quote "$r")
2726     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2727 done
2728
2729 find_things(){
2730     thing=$1
2731     pattern=$2
2732     file=$source_path/$3
2733     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2734 }
2735
2736 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2737 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2738 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2739 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2740 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2741 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2742 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2743 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2744 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2745 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2746 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2747
2748 ALL_COMPONENTS="
2749     $BSF_LIST
2750     $DECODER_LIST
2751     $DEMUXER_LIST
2752     $ENCODER_LIST
2753     $FILTER_LIST
2754     $HWACCEL_LIST
2755     $INDEV_LIST
2756     $MUXER_LIST
2757     $OUTDEV_LIST
2758     $PARSER_LIST
2759     $PROTOCOL_LIST
2760 "
2761
2762 for n in $COMPONENT_LIST; do
2763     v=$(toupper ${n%s})_LIST
2764     eval enable \$$v
2765     eval ${n}_if_any="\$$v"
2766 done
2767
2768 enable $ARCH_EXT_LIST
2769
2770 die_unknown(){
2771     echo "Unknown option \"$1\"."
2772     echo "See $0 --help for available options."
2773     exit 1
2774 }
2775
2776 print_3_columns() {
2777     cat | tr ' ' '\n' | sort | pr -r -3 -t
2778 }
2779
2780 show_list() {
2781     suffix=_$1
2782     shift
2783     echo $* | sed s/$suffix//g | print_3_columns
2784     exit 0
2785 }
2786
2787 rand_list(){
2788     IFS=', '
2789     set -- $*
2790     unset IFS
2791     for thing; do
2792         comp=${thing%:*}
2793         prob=${thing#$comp}
2794         prob=${prob#:}
2795         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2796         echo "prob ${prob:-0.5}"
2797         printf '%s\n' $comp
2798     done
2799 }
2800
2801 do_random(){
2802     action=$1
2803     shift
2804     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2805     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2806 }
2807
2808 for opt do
2809     optval="${opt#*=}"
2810     case "$opt" in
2811         --extra-ldflags=*)
2812             add_ldflags $optval
2813         ;;
2814         --extra-libs=*)
2815             add_extralibs $optval
2816         ;;
2817         --disable-devices)
2818             disable $INDEV_LIST $OUTDEV_LIST
2819         ;;
2820         --enable-debug=*)
2821             debuglevel="$optval"
2822         ;;
2823         --disable-programs)
2824             disable $PROGRAM_LIST
2825         ;;
2826         --disable-everything)
2827             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2828         ;;
2829         --disable-all)
2830             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2831             disable $LIBRARY_LIST $PROGRAM_LIST doc
2832         ;;
2833         --enable-random|--disable-random)
2834             action=${opt%%-random}
2835             do_random ${action#--} $COMPONENT_LIST
2836         ;;
2837         --enable-random=*|--disable-random=*)
2838             action=${opt%%-random=*}
2839             do_random ${action#--} $optval
2840         ;;
2841         --enable-*=*|--disable-*=*)
2842             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2843             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2844             eval list=\$$(toupper $thing)_LIST
2845             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2846             list=$(filter "$name" $list)
2847             [ "$list" = "" ] && warn "Option $opt did not match anything"
2848             $action $list
2849         ;;
2850         --enable-?*|--disable-?*)
2851             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2852             if is_in $option $COMPONENT_LIST; then
2853                 test $action = disable && action=unset
2854                 eval $action \$$(toupper ${option%s})_LIST
2855             elif is_in $option $CMDLINE_SELECT; then
2856                 $action $option
2857             else
2858                 die_unknown $opt
2859             fi
2860         ;;
2861         --list-*)
2862             NAME="${opt#--list-}"
2863             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2864             NAME=${NAME%s}
2865             eval show_list $NAME \$$(toupper $NAME)_LIST
2866         ;;
2867         --help|-h) show_help
2868         ;;
2869         --fatal-warnings) enable fatal_warnings
2870         ;;
2871         *)
2872             optname="${opt%%=*}"
2873             optname="${optname#--}"
2874             optname=$(echo "$optname" | sed 's/-/_/g')
2875             if is_in $optname $CMDLINE_SET; then
2876                 eval $optname='$optval'
2877             elif is_in $optname $CMDLINE_APPEND; then
2878                 append $optname "$optval"
2879             else
2880                 die_unknown $opt
2881             fi
2882         ;;
2883     esac
2884 done
2885
2886 disabled logging && logfile=/dev/null
2887
2888 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2889 set >> $logfile
2890
2891 test -n "$cross_prefix" && enable cross_compile
2892
2893 if enabled cross_compile; then
2894     test -n "$arch" && test -n "$target_os" ||
2895         die "Must specify target arch and OS when cross-compiling"
2896 fi
2897
2898 ar_default="${cross_prefix}${ar_default}"
2899 cc_default="${cross_prefix}${cc_default}"
2900 cxx_default="${cross_prefix}${cxx_default}"
2901 nm_default="${cross_prefix}${nm_default}"
2902 pkg_config_default="${cross_prefix}${pkg_config_default}"
2903 ranlib_default="${cross_prefix}${ranlib_default}"
2904 strip_default="${cross_prefix}${strip_default}"
2905 windres_default="${cross_prefix}${windres_default}"
2906
2907 sysinclude_default="${sysroot}/usr/include"
2908
2909 test -n "$valgrind" && toolchain="valgrind-memcheck"
2910
2911 case "$toolchain" in
2912     clang-asan)
2913         cc_default="clang"
2914         add_cflags  -fsanitize=address
2915         add_ldflags -fsanitize=address
2916     ;;
2917     clang-tsan)
2918         cc_default="clang"
2919         add_cflags  -fsanitize=thread -pie
2920         add_ldflags -fsanitize=thread -pie
2921     ;;
2922     clang-usan)
2923         cc_default="clang"
2924         add_cflags  -fsanitize=undefined
2925         add_ldflags -fsanitize=undefined
2926     ;;
2927     gcc-asan)
2928         cc_default="gcc"
2929         add_cflags  -fsanitize=address
2930         add_ldflags -fsanitize=address
2931     ;;
2932     gcc-tsan)
2933         cc_default="gcc"
2934         add_cflags  -fsanitize=thread -pie -fPIC
2935         add_ldflags -fsanitize=thread -pie -fPIC
2936     ;;
2937     gcc-usan)
2938         cc_default="gcc"
2939         add_cflags  -fsanitize=undefined
2940         add_ldflags -fsanitize=undefined
2941     ;;
2942     valgrind-massif)
2943         target_exec_default=${valgrind:-"valgrind"}
2944         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"
2945     ;;
2946     valgrind-memcheck)
2947         target_exec_default=${valgrind:-"valgrind"}
2948         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2949     ;;
2950     msvc)
2951         # Check whether the current MSVC version needs the C99 converter.
2952         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2953         # support enough of C99 to build ffmpeg. Default to the new
2954         # behaviour if the regexp was unable to match anything, since this
2955         # successfully parses the version number of existing supported
2956         # versions that require the converter (MSVC 2010 and 2012).
2957         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2958         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2959             cc_default="cl"
2960         else
2961             cc_default="c99wrap cl"
2962         fi
2963         ld_default="link"
2964         nm_default="dumpbin -symbols"
2965         ar_default="lib"
2966         target_os_default="win32"
2967         # Use a relative path for TMPDIR. This makes sure all the
2968         # ffconf temp files are written with a relative path, avoiding
2969         # issues with msys/win32 path conversion for MSVC parameters
2970         # such as -Fo<file> or -out:<file>.
2971         TMPDIR=.
2972     ;;
2973     icl)
2974         cc_default="icl"
2975         ld_default="xilink"
2976         nm_default="dumpbin -symbols"
2977         ar_default="xilib"
2978         target_os_default="win32"
2979         TMPDIR=.
2980     ;;
2981     gcov)
2982         add_cflags  -fprofile-arcs -ftest-coverage
2983         add_ldflags -fprofile-arcs -ftest-coverage
2984     ;;
2985     hardened)
2986         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2987         add_ldflags -Wl,-z,relro -Wl,-z,now
2988     ;;
2989     ?*)
2990         die "Unknown toolchain $toolchain"
2991     ;;
2992 esac
2993
2994 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2995 enabled cross_compile || host_cc_default=$cc
2996 set_default host_cc
2997
2998 if ! $pkg_config --version >/dev/null 2>&1; then
2999     warn "$pkg_config not found, library detection may fail."
3000     pkg_config=false
3001 fi
3002
3003 exesuf() {
3004     case $1 in
3005         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3006     esac
3007 }
3008
3009 EXESUF=$(exesuf $target_os)
3010 HOSTEXESUF=$(exesuf $host_os)
3011
3012 # set temporary file name
3013 : ${TMPDIR:=$TEMPDIR}
3014 : ${TMPDIR:=$TMP}
3015 : ${TMPDIR:=/tmp}
3016
3017 if [ -n "$tempprefix" ] ; then
3018     mktemp(){
3019         echo $tempprefix.${HOSTNAME}.${UID}
3020     }
3021 elif ! check_cmd mktemp -u XXXXXX; then
3022     # simple replacement for missing mktemp
3023     # NOT SAFE FOR GENERAL USE
3024     mktemp(){
3025         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3026     }
3027 fi
3028
3029 tmpfile(){
3030     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3031         (set -C; exec > $tmp) 2>/dev/null ||
3032         die "Unable to create temporary file in $TMPDIR."
3033     append TMPFILES $tmp
3034     eval $1=$tmp
3035 }
3036
3037 trap 'rm -f -- $TMPFILES' EXIT
3038
3039 tmpfile TMPASM .asm
3040 tmpfile TMPC   .c
3041 tmpfile TMPCPP .cpp
3042 tmpfile TMPE   $EXESUF
3043 tmpfile TMPH   .h
3044 tmpfile TMPM   .m
3045 tmpfile TMPO   .o
3046 tmpfile TMPS   .S
3047 tmpfile TMPSH  .sh
3048 tmpfile TMPV   .ver
3049
3050 unset -f mktemp
3051
3052 chmod +x $TMPE
3053
3054 # make sure we can execute files in $TMPDIR
3055 cat > $TMPSH 2>> $logfile <<EOF
3056 #! /bin/sh
3057 EOF
3058 chmod +x $TMPSH >> $logfile 2>&1
3059 if ! $TMPSH >> $logfile 2>&1; then
3060     cat <<EOF
3061 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3062 variable to another directory and make sure that it is not mounted noexec.
3063 EOF
3064     die "Sanity test failed."
3065 fi
3066
3067 ccc_flags(){
3068     for flag; do
3069         case $flag in
3070             -std=c99)           echo -c99                       ;;
3071             -mcpu=*)            echo -arch ${flag#*=}           ;;
3072             -mieee)             echo -ieee                      ;;
3073             -O*|-fast)          echo $flag                      ;;
3074             -fno-math-errno)    echo -assume nomath_errno       ;;
3075             -g)                 echo -g3                        ;;
3076             -Wall)              echo -msg_enable level2         ;;
3077             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3078             -Wl,*)              echo $flag                      ;;
3079             -f*|-W*)                                            ;;
3080             *)                  echo $flag                      ;;
3081         esac
3082    done
3083 }
3084
3085 cparser_flags(){
3086     for flag; do
3087         case $flag in
3088             -Wno-switch)             echo -Wno-switch-enum ;;
3089             -Wno-format-zero-length) ;;
3090             -Wdisabled-optimization) ;;
3091             -Wno-pointer-sign)       echo -Wno-other ;;
3092             *)                       echo $flag ;;
3093         esac
3094     done
3095 }
3096
3097 msvc_common_flags(){
3098     for flag; do
3099         case $flag in
3100             # In addition to specifying certain flags under the compiler
3101             # specific filters, they must be specified here as well or else the
3102             # generic catch all at the bottom will print the original flag.
3103             -Wall)                ;;
3104             -std=c99)             ;;
3105             # Common flags
3106             -fomit-frame-pointer) ;;
3107             -g)                   echo -Z7 ;;
3108             -fno-math-errno)      ;;
3109             -fno-common)          ;;
3110             -fno-signed-zeros)    ;;
3111             -fPIC)                ;;
3112             -mthumb)              ;;
3113             -march=*)             ;;
3114             -lz)                  echo zlib.lib ;;
3115             -lavifil32)           echo vfw32.lib ;;
3116             -lavicap32)           echo vfw32.lib user32.lib ;;
3117             -l*)                  echo ${flag#-l}.lib ;;
3118             *)                    echo $flag ;;
3119         esac
3120     done
3121 }
3122
3123 msvc_flags(){
3124     msvc_common_flags "$@"
3125     for flag; do
3126         case $flag in
3127             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3128                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3129                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3130                                        -wd4554 \
3131                                        -wd4273 ;;
3132         esac
3133     done
3134 }
3135
3136 icl_flags(){
3137     msvc_common_flags "$@"
3138     for flag; do
3139         case $flag in
3140             # Despite what Intel's documentation says -Wall, which is supported
3141             # on Windows, does enable remarks so disable them here.
3142             -Wall)                echo $flag -Qdiag-disable:remark ;;
3143             -std=c99)             echo -Qstd=c99 ;;
3144         esac
3145     done
3146 }
3147
3148 icc_flags(){
3149     for flag; do
3150         case $flag in
3151             -flto)                echo -ipo ;;
3152             *)                    echo $flag ;;
3153         esac
3154     done
3155 }
3156
3157 pgi_flags(){
3158     for flag; do
3159         case $flag in
3160             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3161             -fomit-frame-pointer) echo -Mnoframe ;;
3162             -g)                   echo -gopt ;;
3163             *)                    echo $flag ;;
3164         esac
3165     done
3166 }
3167
3168 suncc_flags(){
3169     for flag; do
3170         case $flag in
3171             -march=*|-mcpu=*)
3172                 case "${flag#*=}" in
3173                     native)                   echo -xtarget=native       ;;
3174                     v9|niagara)               echo -xarch=sparc          ;;
3175                     ultrasparc)               echo -xarch=sparcvis       ;;
3176                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3177                     i586|pentium)             echo -xchip=pentium        ;;
3178                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3179                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3180                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3181                     pentium4*)          echo -xtarget=pentium4           ;;
3182                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3183                     *-sse3)             echo -xarch=sse3                 ;;
3184                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3185                     bonnell)                   echo -xarch=ssse3         ;;
3186                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3187                     westmere)                  echo -xtarget=westmere    ;;
3188                     silvermont)                echo -xarch=sse4_2        ;;
3189                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3190                     core-avx*|ivybridge|haswell|broadwell)
3191                                                echo -xarch=avx           ;;
3192                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3193                     btver1)                    echo -xarch=amdsse4a      ;;
3194                     btver2|bdver*)             echo -xarch=avx           ;;
3195                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3196                     k8|opteron|athlon64|athlon-fx)
3197                                                echo -xarch=sse2a         ;;
3198                     athlon*)                   echo -xarch=pentium_proa  ;;
3199                 esac
3200                 ;;
3201             -std=c99)             echo -xc99              ;;
3202             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3203             -fPIC)                echo -KPIC -xcode=pic32 ;;
3204             -W*,*)                echo $flag              ;;
3205             -f*-*|-W*|-mimpure-text)                      ;;
3206             -shared)              echo -G                 ;;
3207             *)                    echo $flag              ;;
3208         esac
3209     done
3210 }
3211
3212 tms470_flags(){
3213     for flag; do
3214         case $flag in
3215             -march=*|-mcpu=*)
3216                 case "${flag#*=}" in
3217                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3218                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3219                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3220                     armv6*|arm11*)          echo -mv=6   ;;
3221                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3222                                             echo -mv=5e  ;;
3223                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3224                 esac
3225                 ;;
3226             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3227             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3228             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3229             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3230             -msoft-float)   echo --float_support=vfplib       ;;
3231             -O[0-3]|-mf=*)  echo $flag                        ;;
3232             -g)             echo -g -mn                       ;;
3233             -pds=*)         echo $flag                        ;;
3234             -D*|-I*)        echo $flag                        ;;
3235             --gcc|--abi=*)  echo $flag                        ;;
3236             -me)            echo $flag                        ;;
3237         esac
3238     done
3239 }
3240
3241 probe_cc(){
3242     pfx=$1
3243     _cc=$2
3244
3245     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3246     unset _ld_o _ldflags _ld_lib _ld_path
3247     unset _depflags _DEPCMD _DEPFLAGS
3248     _flags_filter=echo
3249
3250     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3251         true # no-op to avoid reading stdin in following checks
3252     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3253         _type=llvm_gcc
3254         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3255         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3256         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3257         _cflags_speed='-O3'
3258         _cflags_size='-Os'
3259     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3260         _type=gcc
3261         gcc_version=$($_cc --version | head -n1)
3262         gcc_basever=$($_cc -dumpversion)
3263         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3264         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3265         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3266         if ! $_cc -dumpversion | grep -q '^2\.'; then
3267             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3268         fi
3269         _cflags_speed='-O3'
3270         _cflags_size='-Os'
3271     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3272         _type=icc
3273         _ident=$($_cc --version | head -n1)
3274         _depflags='-MMD'
3275         _cflags_speed='-O3'
3276         _cflags_size='-Os'
3277         _cflags_noopt='-O1'
3278         _flags_filter=icc_flags
3279     elif $_cc -v 2>&1 | grep -q xlc; then
3280         _type=xlc
3281         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3282         _cflags_speed='-O5'
3283         _cflags_size='-O5 -qcompact'
3284     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3285         _type=ccc
3286         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3287         _DEPFLAGS='-M'
3288         _cflags_speed='-fast'
3289         _cflags_size='-O1'
3290         _flags_filter=ccc_flags
3291     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3292         test -d "$sysroot" || die "No valid sysroot specified."
3293         _type=armcc
3294         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3295         armcc_conf="$PWD/armcc.conf"
3296         $_cc --arm_linux_configure                 \
3297              --arm_linux_config_file="$armcc_conf" \
3298              --configure_sysroot="$sysroot"        \
3299              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3300              die "Error creating armcc configuration file."
3301         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3302         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3303         as_default="${cross_prefix}gcc"
3304         _depflags='-MMD'
3305         _cflags_speed='-O3'
3306         _cflags_size='-Os'
3307     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3308         _type=tms470
3309         _ident=$($_cc -version | head -n1 | tr -s ' ')
3310         _flags='--gcc --abi=eabi -me'
3311         _cc_e='-ppl -fe=$@'
3312         _cc_o='-fe=$@'
3313         _depflags='-ppa -ppd=$(@:.o=.d)'
3314         _cflags_speed='-O3 -mf=5'
3315         _cflags_size='-O3 -mf=2'
3316         _flags_filter=tms470_flags
3317     elif $_cc -v 2>&1 | grep -q clang; then
3318         _type=clang
3319         _ident=$($_cc --version | head -n1)
3320         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3321         _cflags_speed='-O3'
3322         _cflags_size='-Os'
3323     elif $_cc -V 2>&1 | grep -q Sun; then
3324         _type=suncc
3325         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3326         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3327         _DEPFLAGS='-xM1 -xc99'
3328         _ldflags='-std=c99'
3329         _cflags_speed='-O5'
3330         _cflags_size='-O5 -xspace'
3331         _flags_filter=suncc_flags
3332     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3333         _type=pathscale
3334         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3335         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3336         _cflags_speed='-O2'
3337         _cflags_size='-Os'
3338         _flags_filter='filter_out -Wdisabled-optimization'
3339     elif $_cc -v 2>&1 | grep -q Open64; then
3340         _type=open64
3341         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3342         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3343         _cflags_speed='-O2'
3344         _cflags_size='-Os'
3345         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3346     elif $_cc -V 2>&1 | grep -q Portland; then
3347         _type=pgi
3348         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3349         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3350         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3351         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3352         _cflags_noopt="-O"
3353         _flags_filter=pgi_flags
3354     elif $_cc 2>&1 | grep -q Microsoft; then
3355         _type=msvc
3356         _ident=$($cc 2>&1 | head -n1)
3357         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3358         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3359         _cflags_speed="-O2"
3360         _cflags_size="-O1"
3361         if $_cc 2>&1 | grep -q Linker; then
3362             _ld_o='-out:$@'
3363         else
3364             _ld_o='-Fe$@'
3365         fi
3366         _cc_o='-Fo$@'
3367         _cc_e='-P -Fi$@'
3368         _flags_filter=msvc_flags
3369         _ld_lib='lib%.a'
3370         _ld_path='-libpath:'
3371         _flags='-nologo'
3372         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3373         if [ $pfx = hostcc ]; then
3374             append _cflags -Dsnprintf=_snprintf
3375         fi
3376         disable stripping
3377     elif $_cc 2>&1 | grep -q Intel; then
3378         _type=icl
3379         _ident=$($cc 2>&1 | head -n1)
3380         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3381         # Not only is O3 broken on 13.x+ but it is slower on all previous
3382         # versions (tested) as well.
3383         _cflags_speed="-O2"
3384         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3385         if $_cc 2>&1 | grep -q Linker; then
3386             _ld_o='-out:$@'
3387         else
3388             _ld_o='-Fe$@'
3389         fi
3390         _cc_o='-Fo$@'
3391         _cc_e='-P'
3392         _flags_filter=icl_flags
3393         _ld_lib='lib%.a'
3394         _ld_path='-libpath:'
3395         # -Qdiag-error to make icl error when seeing certain unknown arguments
3396         _flags='-nologo -Qdiag-error:4044,10157'
3397         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3398         # with MSVC which enables it by default.
3399         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3400         if [ $pfx = hostcc ]; then
3401             append _cflags -Dsnprintf=_snprintf
3402         fi
3403     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3404         _type=cparser
3405         _ident=$($_cc --version | head -n1)
3406         _depflags='-MMD'
3407         _cflags_speed='-O4'
3408         _cflags_size='-O2'
3409         _flags_filter=cparser_flags
3410     fi
3411
3412     eval ${pfx}_type=\$_type
3413     eval ${pfx}_ident=\$_ident
3414 }
3415
3416 set_ccvars(){
3417     eval ${1}_C=\${_cc_c-\${${1}_C}}
3418     eval ${1}_E=\${_cc_e-\${${1}_E}}
3419     eval ${1}_O=\${_cc_o-\${${1}_O}}
3420
3421     if [ -n "$_depflags" ]; then
3422         eval ${1}_DEPFLAGS=\$_depflags
3423     else
3424         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3425         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3426         eval DEP${1}FLAGS=\$_flags
3427     fi
3428 }
3429
3430 probe_cc cc "$cc"
3431 cflags_filter=$_flags_filter
3432 cflags_speed=$_cflags_speed
3433 cflags_size=$_cflags_size
3434 cflags_noopt=$_cflags_noopt
3435 add_cflags $_flags $_cflags
3436 cc_ldflags=$_ldflags
3437 set_ccvars CC
3438
3439 probe_cc hostcc "$host_cc"
3440 host_cflags_filter=$_flags_filter
3441 add_host_cflags  $_flags $_cflags
3442 set_ccvars HOSTCC
3443
3444 test -n "$cc_type" && enable $cc_type ||
3445     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3446
3447 : ${as_default:=$cc}
3448 : ${dep_cc_default:=$cc}
3449 : ${ld_default:=$cc}
3450 : ${host_ld_default:=$host_cc}
3451 set_default ar as dep_cc ld host_ld windres
3452
3453 probe_cc as "$as"
3454 asflags_filter=$_flags_filter
3455 add_asflags $_flags $_cflags
3456 set_ccvars AS
3457
3458 probe_cc ld "$ld"
3459 ldflags_filter=$_flags_filter
3460 add_ldflags $_flags $_ldflags
3461 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3462 LD_O=${_ld_o-$LD_O}
3463 LD_LIB=${_ld_lib-$LD_LIB}
3464 LD_PATH=${_ld_path-$LD_PATH}
3465
3466 probe_cc hostld "$host_ld"
3467 host_ldflags_filter=$_flags_filter
3468 add_host_ldflags $_flags $_ldflags
3469 HOSTLD_O=${_ld_o-$HOSTLD_O}
3470
3471 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3472     probe_cc depcc "$dep_cc"
3473     CCDEP=${_DEPCMD:-$DEPCMD}
3474     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3475     DEPCCFLAGS=$_flags
3476 fi
3477
3478 if $ar 2>&1 | grep -q Microsoft; then
3479     arflags="-nologo"
3480     ar_o='-out:$@'
3481 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3482     arflags="rq"
3483     ar_o='$@'
3484 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3485     arflags='-Xany -r -c'
3486     ar_o='$@'
3487 else
3488     arflags="rc"
3489     ar_o='$@'
3490 fi
3491
3492 add_cflags $extra_cflags
3493 add_cxxflags $extra_cxxflags
3494 add_asflags $extra_cflags
3495
3496 if test -n "$sysroot"; then
3497     case "$cc_type" in
3498         gcc|llvm_gcc|clang)
3499             add_cppflags --sysroot="$sysroot"
3500             add_ldflags --sysroot="$sysroot"
3501 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3502             add_cppflags -isysroot "$sysroot"
3503             add_ldflags -isysroot "$sysroot"
3504         ;;
3505         tms470)
3506             add_cppflags -I"$sysinclude"
3507             add_ldflags  --sysroot="$sysroot"
3508         ;;
3509     esac
3510 fi
3511
3512 if test "$cpu" = host; then
3513     enabled cross_compile &&
3514         die "--cpu=host makes no sense when cross-compiling."
3515
3516     case "$cc_type" in
3517         gcc|llvm_gcc)
3518             check_native(){
3519                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3520                 sed -n "/cc1.*$1=/{
3521                             s/.*$1=\\([^ ]*\\).*/\\1/
3522                             p
3523                             q
3524                         }" $TMPE
3525             }
3526             cpu=$(check_native -march || check_native -mcpu)
3527         ;;
3528     esac
3529
3530     test "${cpu:-host}" = host &&
3531         die "--cpu=host not supported with compiler $cc"
3532 fi
3533
3534 # Deal with common $arch aliases
3535 case "$arch" in
3536     aarch64|arm64)
3537         arch="aarch64"
3538     ;;
3539     arm*|iPad*|iPhone*)
3540         arch="arm"
3541     ;;
3542     mips*|IP*)
3543         arch="mips"
3544     ;;
3545     parisc*|hppa*)
3546         arch="parisc"
3547     ;;
3548     "Power Macintosh"|ppc*|powerpc*)
3549         arch="ppc"
3550     ;;
3551     s390|s390x)
3552         arch="s390"
3553     ;;
3554     sh4|sh)
3555         arch="sh4"
3556     ;;
3557     sun4u|sparc*)
3558         arch="sparc"
3559     ;;
3560     tilegx|tile-gx)
3561         arch="tilegx"
3562     ;;
3563     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3564         arch="x86"
3565     ;;
3566 esac
3567
3568 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3569 enable $arch
3570
3571 # Add processor-specific flags
3572 if enabled aarch64; then
3573
3574     case $cpu in
3575         armv*)
3576             cpuflags="-march=$cpu"
3577         ;;
3578         *)
3579             cpuflags="-mcpu=$cpu"
3580         ;;
3581     esac
3582
3583 elif enabled alpha; then
3584
3585     cpuflags="-mcpu=$cpu"
3586
3587 elif enabled arm; then
3588
3589     check_arm_arch() {
3590         check_cpp_condition stddef.h \
3591             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3592             $cpuflags
3593     }
3594
3595     probe_arm_arch() {
3596         if   check_arm_arch 4;        then echo armv4;
3597         elif check_arm_arch 4T;       then echo armv4t;
3598         elif check_arm_arch 5;        then echo armv5;
3599         elif check_arm_arch 5E;       then echo armv5e;
3600         elif check_arm_arch 5T;       then echo armv5t;
3601         elif check_arm_arch 5TE;      then echo armv5te;
3602         elif check_arm_arch 5TEJ;     then echo armv5te;
3603         elif check_arm_arch 6;        then echo armv6;
3604         elif check_arm_arch 6J;       then echo armv6j;
3605         elif check_arm_arch 6K;       then echo armv6k;
3606         elif check_arm_arch 6Z;       then echo armv6z;
3607         elif check_arm_arch 6ZK;      then echo armv6zk;
3608         elif check_arm_arch 6T2;      then echo armv6t2;
3609         elif check_arm_arch 7;        then echo armv7;
3610         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3611         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3612         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3613         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3614         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3615         fi
3616     }
3617
3618     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3619
3620     case $cpu in
3621         armv*)
3622             cpuflags="-march=$cpu"
3623             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3624         ;;
3625         *)
3626             cpuflags="-mcpu=$cpu"
3627             case $cpu in
3628                 cortex-a*)                               subarch=armv7a  ;;
3629                 cortex-r*)                               subarch=armv7r  ;;
3630                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3631                 arm11*)                                  subarch=armv6   ;;
3632                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3633                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3634                 *)                             subarch=$(probe_arm_arch) ;;
3635             esac
3636         ;;
3637     esac
3638
3639     case "$subarch" in
3640         armv5t*)    enable fast_clz                ;;
3641         armv[6-8]*)
3642             enable fast_clz
3643             disabled fast_unaligned || enable fast_unaligned
3644             ;;
3645     esac
3646
3647 elif enabled avr32; then
3648
3649     case $cpu in
3650         ap7[02]0[0-2])
3651             subarch="avr32_ap"
3652             cpuflags="-mpart=$cpu"
3653         ;;
3654         ap)
3655             subarch="avr32_ap"
3656             cpuflags="-march=$cpu"
3657         ;;
3658         uc3[ab]*)
3659             subarch="avr32_uc"
3660             cpuflags="-mcpu=$cpu"
3661         ;;
3662         uc)
3663             subarch="avr32_uc"
3664             cpuflags="-march=$cpu"
3665         ;;
3666     esac
3667
3668 elif enabled bfin; then
3669
3670     cpuflags="-mcpu=$cpu"
3671
3672 elif enabled mips; then
3673
3674     cpuflags="-march=$cpu"
3675
3676     case $cpu in
3677         24kc)
3678             disable mipsfpu
3679             disable mipsdspr1
3680             disable mipsdspr2
3681         ;;
3682         24kf*)
3683             disable mipsdspr1
3684             disable mipsdspr2
3685         ;;
3686         24kec|34kc|1004kc)
3687             disable mipsfpu
3688             disable mipsdspr2
3689         ;;
3690         24kef*|34kf*|1004kf*)
3691             disable mipsdspr2
3692         ;;
3693         74kc)
3694             disable mipsfpu
3695         ;;
3696     esac
3697
3698 elif enabled ppc; then
3699
3700     disable ldbrx
3701     disable vsx
3702
3703     case $(tolower $cpu) in
3704         601|ppc601|powerpc601)
3705             cpuflags="-mcpu=601"
3706             disable altivec
3707         ;;
3708         603*|ppc603*|powerpc603*)
3709             cpuflags="-mcpu=603"
3710             disable altivec
3711         ;;
3712         604*|ppc604*|powerpc604*)
3713             cpuflags="-mcpu=604"
3714             disable altivec
3715         ;;
3716         g3|75*|ppc75*|powerpc75*)
3717             cpuflags="-mcpu=750"
3718             disable altivec
3719         ;;
3720         g4|745*|ppc745*|powerpc745*)
3721             cpuflags="-mcpu=7450"
3722         ;;
3723         74*|ppc74*|powerpc74*)
3724             cpuflags="-mcpu=7400"
3725         ;;
3726         g5|970|ppc970|powerpc970)
3727             cpuflags="-mcpu=970"
3728         ;;
3729         power[3-8]*)
3730             cpuflags="-mcpu=$cpu"
3731         ;;
3732         cell)
3733             cpuflags="-mcpu=cell"
3734             enable ldbrx
3735         ;;
3736         e500mc)
3737             cpuflags="-mcpu=e500mc"
3738             disable altivec
3739         ;;
3740         e500v2)
3741             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3742             disable altivec
3743             disable dcbzl
3744         ;;
3745         e500)
3746             cpuflags="-mcpu=8540 -mhard-float"
3747             disable altivec
3748             disable dcbzl
3749         ;;
3750     esac
3751
3752 elif enabled sparc; then
3753
3754     case $cpu in
3755         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3756             cpuflags="-mcpu=$cpu"
3757         ;;
3758         ultrasparc*|niagara[234])
3759             cpuflags="-mcpu=$cpu"
3760         ;;
3761     esac
3762
3763 elif enabled x86; then
3764
3765     case $cpu in
3766         i[345]86|pentium)
3767             cpuflags="-march=$cpu"
3768             disable mmx
3769         ;;
3770         # targets that do NOT support nopl and conditional mov (cmov)
3771         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3772             cpuflags="-march=$cpu"
3773             disable i686
3774         ;;
3775         # targets that do support nopl and conditional mov (cmov)
3776         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3777         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3778             cpuflags="-march=$cpu"
3779             enable i686
3780             enable fast_cmov
3781         ;;
3782         # targets that do support conditional mov but on which it's slow
3783         pentium4|pentium4m|prescott|nocona)
3784             cpuflags="-march=$cpu"
3785             enable i686
3786             disable fast_cmov
3787         ;;
3788     esac
3789
3790 fi
3791
3792 if [ "$cpu" != generic ]; then
3793     add_cflags  $cpuflags
3794     add_asflags $cpuflags
3795 fi
3796
3797 # compiler sanity check
3798 check_exec <<EOF
3799 int main(void){ return 0; }
3800 EOF
3801 if test "$?" != 0; then
3802     echo "$cc is unable to create an executable file."
3803     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3804         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3805         echo "Only do this if you know what cross compiling means."
3806     fi
3807     die "C compiler test failed."
3808 fi
3809
3810 add_cppflags -D_ISOC99_SOURCE
3811 add_cxxflags -D__STDC_CONSTANT_MACROS
3812 check_cflags -std=c99
3813 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3814 #include <stdlib.h>
3815 EOF
3816 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3817 #include <stdlib.h>
3818 EOF
3819
3820 add_host_cppflags -D_ISOC99_SOURCE
3821 check_host_cflags -std=c99
3822 check_host_cflags -Wall
3823 check_host_cflags -O3
3824
3825 check_64bit(){
3826     arch32=$1
3827     arch64=$2
3828     expr=$3
3829     check_code cc "" "int test[2*($expr) - 1]" &&
3830         subarch=$arch64 || subarch=$arch32
3831 }
3832
3833 case "$arch" in
3834     aarch64|alpha|ia64)
3835         spic=$shared
3836     ;;
3837     mips)
3838         check_64bit mips mips64 '_MIPS_SIM > 1'
3839         spic=$shared
3840     ;;
3841     parisc)
3842         check_64bit parisc parisc64 'sizeof(void *) > 4'
3843         spic=$shared
3844     ;;
3845     ppc)
3846         check_64bit ppc ppc64 'sizeof(void *) > 4'
3847         spic=$shared
3848     ;;
3849     s390)
3850         check_64bit s390 s390x 'sizeof(void *) > 4'
3851         spic=$shared
3852     ;;
3853     sparc)
3854         check_64bit sparc sparc64 'sizeof(void *) > 4'
3855         spic=$shared
3856     ;;
3857     x86)
3858         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3859         if test "$subarch" = "x86_64"; then
3860             spic=$shared
3861         fi
3862     ;;
3863     ppc)
3864         check_cc <<EOF && subarch="ppc64"
3865         int test[(int)sizeof(char*) - 7];
3866 EOF
3867     ;;
3868 esac
3869
3870 enable $subarch
3871 enabled spic && enable_weak pic
3872
3873 # OS specific
3874 case $target_os in
3875     aix)
3876         SHFLAGS=-shared
3877         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3878         enabled shared && add_ldflags -Wl,-brtl
3879         ;;
3880     android)
3881         disable symver
3882         SLIB_INSTALL_NAME='$(SLIBNAME)'
3883         SLIB_INSTALL_LINKS=
3884         # soname not set on purpose
3885         SHFLAGS=-shared
3886         ;;
3887     haiku)
3888         prefix_default="/boot/common"
3889         network_extralibs="-lnetwork"
3890         host_libs=
3891         ;;
3892     sunos)
3893         SHFLAGS='-shared -Wl,-h,$$(@F)'
3894         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3895         network_extralibs="-lsocket -lnsl"
3896         # When using suncc to build, the Solaris linker will mark
3897         # an executable with each instruction set encountered by
3898         # the Solaris assembler.  As our libraries contain their own
3899         # guards for processor-specific code, instead suppress
3900         # generation of the HWCAPS ELF section on Solaris x86 only.
3901         enabled_all suncc x86 &&
3902             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3903             add_ldflags -Wl,-M,mapfile
3904         nm_default='nm -P -g'
3905         ;;
3906     netbsd)
3907         disable symver
3908         oss_indev_extralibs="-lossaudio"
3909         oss_outdev_extralibs="-lossaudio"
3910         enabled gcc || check_ldflags -Wl,-zmuldefs
3911         ;;
3912     openbsd|bitrig)
3913         disable symver
3914         SHFLAGS='-shared'
3915         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3916         SLIB_INSTALL_LINKS=
3917         oss_indev_extralibs="-lossaudio"
3918         oss_outdev_extralibs="-lossaudio"
3919         ;;
3920     dragonfly)
3921         disable symver
3922         ;;
3923     freebsd)
3924         ;;
3925     bsd/os)
3926         add_extralibs -lpoll -lgnugetopt
3927         strip="strip -d"
3928         ;;
3929     darwin)
3930         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3931         enabled ppc && add_asflags -force_cpusubtype_ALL
3932         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3933         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3934         strip="${strip} -x"
3935         add_ldflags -Wl,-dynamic,-search_paths_first
3936         SLIBSUF=".dylib"
3937         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3938         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3939         objformat="macho"
3940         enabled x86_64 && objformat="macho64"
3941         enabled_any pic shared ||
3942             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3943         ;;
3944     mingw32*)
3945         if test $target_os = "mingw32ce"; then
3946             disable network
3947         else
3948             target_os=mingw32
3949         fi
3950         LIBTARGET=i386
3951         if enabled x86_64; then
3952             LIBTARGET="i386:x86-64"
3953         elif enabled arm; then
3954             LIBTARGET=arm-wince
3955         fi
3956         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3957         check_ldflags -Wl,--nxcompat
3958         check_ldflags -Wl,--dynamicbase
3959         shlibdir_default="$bindir_default"
3960         SLIBPREF=""
3961         SLIBSUF=".dll"
3962         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3963         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3964         dlltool="${cross_prefix}dlltool"
3965         if check_cmd lib.exe -list; then
3966             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3967             if enabled x86_64; then
3968                 LIBTARGET=x64
3969             fi
3970         elif check_cmd $dlltool --version; then
3971             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3972         fi
3973         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3974         SLIB_INSTALL_LINKS=
3975         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3976         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3977         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3978         objformat="win32"
3979         ranlib=:
3980         enable dos_paths
3981         ;;
3982     win32|win64)
3983         disable symver
3984         if enabled shared; then
3985             # Link to the import library instead of the normal static library
3986             # for shared libs.
3987             LD_LIB='%.lib'
3988             # Cannot build both shared and static libs with MSVC or icl.
3989             disable static
3990         fi
3991         shlibdir_default="$bindir_default"
3992         SLIBPREF=""
3993         SLIBSUF=".dll"
3994         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3995         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3996         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3997         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3998         SLIB_INSTALL_LINKS=
3999         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4000         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4001         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4002         objformat="win32"
4003         ranlib=:
4004         enable dos_paths
4005         ;;
4006     cygwin*)
4007         target_os=cygwin
4008         shlibdir_default="$bindir_default"
4009         SLIBPREF="cyg"
4010         SLIBSUF=".dll"
4011         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4012         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4013         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4014         SLIB_INSTALL_LINKS=
4015         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4016         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4017         objformat="win32"
4018         enable dos_paths
4019         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4020         ;;
4021     *-dos|freedos|opendos)
4022         network_extralibs="-lsocket"
4023         objformat="coff"
4024         enable dos_paths
4025         add_cppflags -U__STRICT_ANSI__
4026         ;;
4027     linux)
4028         enable dv1394
4029         ;;
4030     irix*)
4031         target_os=irix
4032         ranlib="echo ignoring ranlib"
4033         ;;
4034     os/2*)
4035         strip="lxlite -CS"
4036         ln_s="cp -f"
4037         objformat="aout"
4038         add_cppflags -D_GNU_SOURCE
4039         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4040         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4041         LIBSUF="_s.a"
4042         SLIBPREF=""
4043         SLIBSUF=".dll"
4044         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4045         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4046         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4047             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4048             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4049             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4050             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4051             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4052         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4053             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4054         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4055         enable dos_paths
4056         enable_weak os2threads
4057         ;;
4058     gnu/kfreebsd)
4059         add_cppflags -D_BSD_SOURCE
4060         ;;
4061     gnu)
4062         ;;
4063     qnx)
4064         add_cppflags -D_QNX_SOURCE
4065         network_extralibs="-lsocket"
4066         ;;
4067     symbian)
4068         SLIBSUF=".dll"
4069         enable dos_paths
4070         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4071         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4072         add_ldflags -Wl,--target1-abs,--no-undefined \
4073                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4074                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4075         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4076                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4077                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4078         ;;
4079     osf1)
4080         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4081         ;;
4082     minix)
4083         ;;
4084     plan9)
4085         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4086                      -D_REENTRANT_SOURCE        \
4087                      -D_RESEARCH_SOURCE         \
4088                      -DFD_SETSIZE=96            \
4089                      -DHAVE_SOCK_OPTS
4090         add_compat strtod.o strtod=avpriv_strtod
4091         network_extralibs='-lbsd'
4092         exeobjs=compat/plan9/main.o
4093         disable ffserver
4094         cp_f='cp'
4095         ;;
4096     none)
4097         ;;
4098     *)
4099         die "Unknown OS '$target_os'."
4100         ;;
4101 esac
4102
4103 # determine libc flavour
4104
4105 probe_libc(){
4106     pfx=$1
4107     pfx_no_=${pfx%_}
4108     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4109     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4110         eval ${pfx}libc_type=uclibc
4111         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4112     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4113         eval ${pfx}libc_type=glibc
4114         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4115     # MinGW headers can be installed on Cygwin, so check for newlib first.
4116     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4117         eval ${pfx}libc_type=newlib
4118         add_${pfx}cppflags -U__STRICT_ANSI__
4119     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4120     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4121         eval ${pfx}libc_type=mingw64
4122         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4123             add_compat msvcrt/snprintf.o
4124             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4125         fi
4126         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4127         eval test \$${pfx_no_}cc_type = "gcc" &&
4128             add_${pfx}cppflags -D__printf__=__gnu_printf__
4129     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4130          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4131         eval ${pfx}libc_type=mingw32
4132         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4133             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4134             die "ERROR: MinGW32 runtime version must be >= 3.15."
4135         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4136         eval test \$${pfx_no_}cc_type = "gcc" &&
4137             add_${pfx}cppflags -D__printf__=__gnu_printf__
4138     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4139         eval ${pfx}libc_type=msvcrt
4140         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4141         # 0x601 by default unless something else is set by the user.
4142         # This can easily lead to us detecting functions only present
4143         # in such new versions and producing binaries requiring windows 7.0.
4144         # Therefore explicitly set the default to XP unless the user has
4145         # set something else on the command line.
4146         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4147             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4148     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4149         eval ${pfx}libc_type=klibc
4150     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4151         eval ${pfx}libc_type=bionic
4152     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4153         eval ${pfx}libc_type=solaris
4154         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4155     fi
4156 }
4157
4158 probe_libc
4159 test -n "$libc_type" && enable libc_$libc_type
4160 probe_libc host_
4161 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4162
4163 case $libc_type in
4164     bionic)
4165         add_compat strtod.o strtod=avpriv_strtod
4166         ;;
4167     msvcrt)
4168         add_compat strtod.o strtod=avpriv_strtod
4169         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4170                                      _snprintf=avpriv_snprintf  \
4171                                      vsnprintf=avpriv_vsnprintf
4172         ;;
4173 esac
4174
4175 # hacks for compiler/libc/os combinations
4176
4177 if enabled_all tms470 libc_glibc; then
4178     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4179     add_cppflags -D__USER_LABEL_PREFIX__=
4180     add_cppflags -D__builtin_memset=memset
4181     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4182     add_cflags   -pds=48    # incompatible redefinition of macro
4183 fi
4184
4185 if enabled_all ccc libc_glibc; then
4186     add_ldflags -Wl,-z,now  # calls to libots crash without this
4187 fi
4188
4189 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4190     add_cppflags '-I\$(SRC_PATH)/compat/float'
4191
4192 esc(){
4193     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4194 }
4195
4196 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4197
4198 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4199
4200 set_default $PATHS_LIST
4201 set_default nm
4202
4203 # we need to build at least one lib type
4204 if ! enabled_any static shared; then
4205     cat <<EOF
4206 At least one library type must be built.
4207 Specify --enable-static to build the static libraries or --enable-shared to
4208 build the shared libraries as well. To only build the shared libraries specify
4209 --disable-static in addition to --enable-shared.
4210 EOF
4211     exit 1;
4212 fi
4213
4214 die_license_disabled() {
4215     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4216 }
4217
4218 die_license_disabled_gpl() {
4219     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4220 }
4221
4222 die_license_disabled gpl frei0r
4223 die_license_disabled gpl libcdio
4224 die_license_disabled gpl libutvideo
4225 die_license_disabled gpl libvidstab
4226 die_license_disabled gpl libx264
4227 die_license_disabled gpl libx265
4228 die_license_disabled gpl libxavs
4229 die_license_disabled gpl libxvid
4230 die_license_disabled gpl libzvbi
4231 die_license_disabled gpl x11grab
4232
4233 die_license_disabled nonfree libaacplus
4234 die_license_disabled nonfree libfaac
4235 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4236 enabled gpl && die_license_disabled_gpl nonfree openssl
4237
4238 die_license_disabled version3 libopencore_amrnb
4239 die_license_disabled version3 libopencore_amrwb
4240 die_license_disabled version3 libvo_aacenc
4241 die_license_disabled version3 libvo_amrwbenc
4242
4243 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4244
4245 disabled optimizations || check_cflags -fomit-frame-pointer
4246
4247 enable_weak_pic() {
4248     disabled pic && return
4249     enable pic
4250     add_cppflags -DPIC
4251     case "$target_os" in
4252     mingw*|cygwin*)
4253         ;;
4254     *)
4255         add_cflags -fPIC
4256         ;;
4257     esac
4258     add_asflags  -fPIC
4259 }
4260
4261 enabled pic && enable_weak_pic
4262
4263 check_cc <<EOF || die "Symbol mangling check failed."
4264 int ff_extern;
4265 EOF
4266 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4267 extern_prefix=${sym%%ff_extern*}
4268
4269 check_cc <<EOF && enable_weak inline_asm
4270 void foo(void) { __asm__ volatile ("" ::); }
4271 EOF
4272
4273 _restrict=
4274 for restrict_keyword in restrict __restrict__ __restrict; do
4275     check_cc <<EOF && _restrict=$restrict_keyword && break
4276 void foo(char * $restrict_keyword p);
4277 EOF
4278 done
4279
4280 check_cc <<EOF && enable pragma_deprecated
4281 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4282 EOF
4283
4284 check_cc <<EOF && enable attribute_packed
4285 struct { int x; } __attribute__((packed)) x;
4286 EOF
4287
4288 check_cc <<EOF && enable attribute_may_alias
4289 union { int x; } __attribute__((may_alias)) x;
4290 EOF
4291
4292 check_cc <<EOF || die "endian test failed"
4293 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4294 EOF
4295 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4296
4297 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] ;then
4298     if ! enabled bigendian ;then
4299         enable vsx
4300     fi
4301 fi
4302
4303
4304 if enabled asm; then
4305     enabled     arm         && nogas=die
4306     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4307     as=${gas:=$as}
4308     check_as <<EOF && enable gnu_as || \
4309         $nogas "GNU assembler not found, install gas-preprocessor"
4310 .macro m n
4311 \n: .int 0
4312 .endm
4313 m x
4314 EOF
4315
4316     check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
4317 .altmacro
4318 EOF
4319
4320     check_as <<EOF && enable as_func
4321 .func test
4322 .endfunc
4323 EOF
4324 fi
4325
4326 check_inline_asm inline_asm_labels '"1:\n"'
4327
4328 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4329
4330 if enabled aarch64; then
4331     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4332     # internal assembler in clang 3.3 does not support this instruction
4333     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4334     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4335
4336     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4337
4338 elif enabled alpha; then
4339
4340     check_cflags -mieee
4341
4342 elif enabled arm; then
4343
4344     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4345 float func(float a, float b){ return a+b; }
4346 EOF
4347
4348     enabled thumb && check_cflags -mthumb || check_cflags -marm
4349
4350     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4351         enable vfp_args
4352     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4353         case "${cross_prefix:-$cc}" in
4354             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4355             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4356 __asm__ (".eabi_attribute 28, 1");
4357 int main(void) { return 0; }
4358 EOF
4359         esac
4360         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4361     fi
4362
4363     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4364     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4365     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4366     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4367     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4368     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4369
4370     [ $target_os = linux ] ||
4371         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4372             $ARCH_EXT_LIST_ARM
4373
4374     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4375
4376     check_as <<EOF && enable as_dn_directive
4377 ra .dn d0.i16
4378 .unreq ra
4379 EOF
4380
4381     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4382
4383 elif enabled mips; then
4384
4385     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4386     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4387      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4388     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4389      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4390     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4391      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4392     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4393      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4394
4395 elif enabled parisc; then
4396
4397     if enabled gcc; then
4398         case $($cc -dumpversion) in
4399             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4400         esac
4401     fi
4402
4403 elif enabled ppc; then
4404
4405     enable local_aligned_8 local_aligned_16 local_aligned_32
4406
4407     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4408     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4409     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4410     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4411
4412     # AltiVec flags: The FSF version of GCC differs from the Apple version
4413     if enabled altivec; then
4414         check_cflags -maltivec -mabi=altivec &&
4415         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4416         check_cflags -faltivec
4417
4418         # check if our compiler supports Motorola AltiVec C API
4419         check_cc <<EOF || disable altivec
4420 $inc_altivec_h
4421 int main(void) {
4422     vector signed int v1 = (vector signed int) { 0 };
4423     vector signed int v2 = (vector signed int) { 1 };
4424     v1 = vec_add(v1, v2);
4425     return 0;
4426 }
4427 EOF
4428
4429         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4430     fi
4431
4432     if enabled vsx; then
4433         check_cflags -mvsx
4434     fi
4435 elif enabled x86; then
4436
4437     check_builtin rdtsc    intrin.h   "__rdtsc()"
4438     check_builtin mm_empty mmintrin.h "_mm_empty()"
4439
4440     enable local_aligned_8 local_aligned_16 local_aligned_32
4441
4442     # check whether EBP is available on x86
4443     # As 'i' is stored on the stack, this program will crash
4444     # if the base pointer is used to access it because the
4445     # base pointer is cleared in the inline assembly code.
4446     check_exec_crash <<EOF && enable ebp_available
4447 volatile int i=0;
4448 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4449 return i;
4450 EOF
4451
4452     # check whether EBX is available on x86
4453     check_inline_asm ebx_available '""::"b"(0)' &&
4454         check_inline_asm ebx_available '"":::"%ebx"'
4455
4456     # check whether xmm clobbers are supported
4457     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4458
4459     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4460         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4461
4462     # check whether binutils is new enough to compile AVX/SSSE3/MMXEXT
4463     enabled avx    && check_inline_asm avx_inline    '"vextractf128 $1, %ymm0, %xmm1"'
4464     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4465     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4466
4467     if ! disabled_any asm mmx yasm; then
4468         if check_cmd $yasmexe --version; then
4469             enabled x86_64 && yasm_extra="-m amd64"
4470             yasm_debug="-g dwarf2"
4471         elif check_cmd nasm -v; then
4472             yasmexe=nasm
4473             yasm_debug="-g -F dwarf"
4474             if enabled x86_64; then
4475                 case "$objformat" in
4476                     elf)   objformat=elf64 ;;
4477                     win32) objformat=win64 ;;
4478                 esac
4479             fi
4480         fi
4481
4482         YASMFLAGS="-f $objformat $yasm_extra"
4483         enabled pic               && append YASMFLAGS "-DPIC"
4484         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4485         case "$objformat" in
4486             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4487         esac
4488
4489         check_yasm "movbe ecx, [5]" && enable yasm ||
4490             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4491         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4492         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4493         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4494         check_yasm "CPU amdnop" || disable cpunop
4495     fi
4496
4497     case "$cpu" in
4498         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4499             disable fast_clz
4500         ;;
4501     esac
4502
4503 fi
4504
4505 check_ldflags -Wl,--as-needed
4506
4507 if check_func dlopen; then
4508     ldl=
4509 elif check_func dlopen -ldl; then
4510     ldl=-ldl
4511 fi
4512
4513 if ! disabled network; then
4514     check_func getaddrinfo $network_extralibs
4515     check_func getservbyport $network_extralibs
4516     check_func inet_aton $network_extralibs
4517
4518     check_type netdb.h "struct addrinfo"
4519     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4520     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4521     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4522     check_type poll.h "struct pollfd"
4523     check_type netinet/sctp.h "struct sctp_event_subscribe"
4524     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4525     check_type netinet/in.h "struct sockaddr_in6"
4526     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4527     check_type "sys/types.h sys/socket.h" socklen_t
4528
4529     # Prefer arpa/inet.h over winsock2
4530     if check_header arpa/inet.h ; then
4531         check_func closesocket
4532     elif check_header winsock2.h ; then
4533         check_func_headers winsock2.h closesocket -lws2 &&
4534             network_extralibs="-lws2" ||
4535         { check_func_headers winsock2.h closesocket -lws2_32 &&
4536             network_extralibs="-lws2_32"; } || disable winsock2_h network
4537         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4538
4539         check_type ws2tcpip.h socklen_t
4540         check_type ws2tcpip.h "struct addrinfo"
4541         check_type ws2tcpip.h "struct group_source_req"
4542         check_type ws2tcpip.h "struct ip_mreq_source"
4543         check_type ws2tcpip.h "struct ipv6_mreq"
4544         check_type winsock2.h "struct pollfd"
4545         check_struct winsock2.h "struct sockaddr" sa_len
4546         check_type ws2tcpip.h "struct sockaddr_in6"
4547         check_type ws2tcpip.h "struct sockaddr_storage"
4548     else
4549         disable network
4550     fi
4551 fi
4552
4553 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4554 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4555 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4556 check_builtin sarestart signal.h "SA_RESTART"
4557 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4558
4559 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4560 check_func  ${malloc_prefix}memalign            && enable memalign
4561 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4562
4563 check_func  access
4564 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4565 check_func  fcntl
4566 check_func  fork
4567 check_func  gethrtime
4568 check_func  getopt
4569 check_func  getrusage
4570 check_func  gettimeofday
4571 check_func  isatty
4572 check_func  localtime_r
4573 check_func  mach_absolute_time
4574 check_func  mkstemp
4575 check_func  mmap
4576 check_func  mprotect
4577 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4578 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4579 check_func  sched_getaffinity
4580 check_func  setrlimit
4581 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4582 check_func  strerror_r
4583 check_func  sysconf
4584 check_func  sysctl
4585 check_func  usleep
4586
4587 check_func_headers conio.h kbhit
4588 check_func_headers io.h setmode
4589 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4590 check_func_headers stdlib.h getenv
4591
4592 check_func_headers windows.h CoTaskMemFree -lole32
4593 check_func_headers windows.h GetProcessAffinityMask
4594 check_func_headers windows.h GetProcessTimes
4595 check_func_headers windows.h GetSystemTimeAsFileTime
4596 check_func_headers windows.h MapViewOfFile
4597 check_func_headers windows.h PeekNamedPipe
4598 check_func_headers windows.h SetConsoleTextAttribute
4599 check_func_headers windows.h Sleep
4600 check_func_headers windows.h VirtualAlloc
4601 check_func_headers glob.h glob
4602 enabled xlib &&
4603     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4604
4605 check_header cl/cl.h
4606 check_header direct.h
4607 check_header dlfcn.h
4608 check_header dxva.h
4609 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4610 check_header io.h
4611 check_header libcrystalhd/libcrystalhd_if.h
4612 check_header mach/mach_time.h
4613 check_header malloc.h
4614 check_header poll.h
4615 check_header sys/mman.h
4616 check_header sys/param.h
4617 check_header sys/resource.h
4618 check_header sys/select.h
4619 check_header sys/time.h
4620 check_header sys/un.h
4621 check_header termios.h
4622 check_header unistd.h
4623 check_header vdpau/vdpau.h
4624 check_header vdpau/vdpau_x11.h
4625 check_header VideoDecodeAcceleration/VDADecoder.h
4626 check_header windows.h
4627 check_header X11/extensions/XvMClib.h
4628 check_header asm/types.h
4629
4630 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4631 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4632 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4633
4634 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4635
4636 if ! disabled w32threads && ! enabled pthreads; then
4637     check_func_headers "windows.h process.h" _beginthreadex &&
4638         enable w32threads || disable w32threads
4639 fi
4640
4641 # check for some common methods of building with pthread support
4642 # do this before the optional library checks as some of them require pthreads
4643 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4644     enable pthreads
4645     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4646         add_cflags -pthread
4647         add_extralibs -pthread
4648     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4649         add_cflags -pthreads
4650         add_extralibs -pthreads
4651     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4652         add_cflags -ldl -pthread
4653         add_extralibs -ldl -pthread
4654     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4655         add_extralibs -lpthreadGC2
4656     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4657         :
4658     elif ! check_func pthread_join && ! check_func pthread_create; then
4659         disable pthreads
4660     fi
4661     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4662 fi
4663
4664
4665 if enabled pthreads; then
4666   check_func pthread_cancel
4667 fi
4668
4669 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4670 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4671
4672 check_lib math.h sin -lm && LIBM="-lm"
4673 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4674
4675 atan2f_args=2
4676 ldexpf_args=2
4677 powf_args=2
4678 fminf_args=2
4679
4680 for func in $MATH_FUNCS; do
4681     eval check_mathfunc $func \${${func}_args:-1}
4682 done
4683
4684 # these are off by default, so fail if requested and not available
4685 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4686 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4687                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4688                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4689 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4690 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4691 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4692 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4693 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4694 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4695 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4696 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4697 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4698 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4699                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4700                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4701 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4702 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4703 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4704 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"
4705 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4706 enabled fontconfig        && enable libfontconfig
4707 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4708 enabled libfreetype       && require_libfreetype
4709 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4710 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4711                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4712                                done || die "ERROR: libgsm not found"; }
4713 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4714 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4715 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4716 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4717 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4718 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4719 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4720 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4721                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4722                                die "ERROR: libopenjpeg not found"; }
4723 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4724 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4725 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4726 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4727 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4728 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4729 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4730 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4731 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4732 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4733     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4734     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4735 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4736 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4737                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4738                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4739 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4740 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4741 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4742 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4743 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4744 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4745 enabled libvpx            && {
4746     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4747                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4748     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 ||
4749                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4750     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4751     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; } }
4752 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4753 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4754 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4755                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4756                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4757 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4758                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4759                                die "ERROR: libx265 version must be >= 17."; }
4760 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4761 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4762 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4763 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4764 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4765                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4766                                die "ERROR: openal not found"; } &&
4767                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4768                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4769 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4770                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4771                                die "ERROR: opencl not found"; } &&
4772                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4773                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4774                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4775 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4776                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4777                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4778