Merge commit 'f43789b76e661acd93c21664678f140e53cfa1fa'
[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   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
290   --host-cc=HOSTCC         use host C compiler HOSTCC
291   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
292   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
293   --host-ld=HOSTLD         use host linker HOSTLD
294   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
295   --host-libs=HLIBS        use libs HLIBS when linking for host
296   --host-os=OS             compiler host OS [$target_os]
297   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
298   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
299   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
300   --extra-libs=ELIBS       add ELIBS [$ELIBS]
301   --extra-version=STRING   version string suffix []
302   --optflags=OPTFLAGS      override optimization-related compiler flags
303   --build-suffix=SUFFIX    library name suffix []
304   --enable-pic             build position-independent code
305   --enable-thumb           compile for Thumb instruction set
306   --enable-lto             use link-time optimization
307
308 Advanced options (experts only):
309   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
310   --disable-symver         disable symbol versioning
311   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
312   --disable-safe-bitstream-reader
313                            disable buffer boundary checking in bitreaders
314                            (faster, but may crash)
315   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
316   --enable-sram            allow use of on-chip SRAM
317   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
318
319 Optimization options (experts only):
320   --disable-asm            disable all assembly optimizations
321   --disable-altivec        disable AltiVec optimizations
322   --disable-amd3dnow       disable 3DNow! optimizations
323   --disable-amd3dnowext    disable 3DNow! extended optimizations
324   --disable-mmx            disable MMX optimizations
325   --disable-mmxext         disable MMXEXT optimizations
326   --disable-sse            disable SSE optimizations
327   --disable-sse2           disable SSE2 optimizations
328   --disable-sse3           disable SSE3 optimizations
329   --disable-ssse3          disable SSSE3 optimizations
330   --disable-sse4           disable SSE4 optimizations
331   --disable-sse42          disable SSE4.2 optimizations
332   --disable-avx            disable AVX optimizations
333   --disable-xop            disable XOP optimizations
334   --disable-fma3           disable FMA3 optimizations
335   --disable-fma4           disable FMA4 optimizations
336   --disable-avx2           disable AVX2 optimizations
337   --disable-armv5te        disable armv5te optimizations
338   --disable-armv6          disable armv6 optimizations
339   --disable-armv6t2        disable armv6t2 optimizations
340   --disable-vfp            disable VFP optimizations
341   --disable-neon           disable NEON optimizations
342   --disable-inline-asm     disable use of inline assembly
343   --disable-yasm           disable use of nasm/yasm assembly
344   --disable-mips32r2       disable MIPS32R2 optimizations
345   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
346   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
347   --disable-mipsfpu        disable floating point MIPS optimizations
348   --disable-fast-unaligned consider unaligned accesses slow
349
350 Developer options (useful when working on FFmpeg itself):
351   --disable-debug          disable debugging symbols
352   --enable-debug=LEVEL     set the debug level [$debuglevel]
353   --disable-optimizations  disable compiler optimizations
354   --enable-extra-warnings  enable more compiler warnings
355   --disable-stripping      disable stripping of executables and shared libraries
356   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
357                            2 causes a slowdown at runtime.
358   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
359   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
360                            leaks and errors, using the specified valgrind binary.
361                            Cannot be combined with --target-exec
362   --enable-ftrapv          Trap arithmetic overflows
363   --samples=PATH           location of test samples for FATE, if not set use
364                            \$FATE_SAMPLES at make invocation time.
365   --enable-neon-clobber-test check NEON registers for clobbering (should be
366                            used only for debugging purposes)
367   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
368                            should be used only for debugging purposes)
369   --enable-random          randomly enable/disable components
370   --disable-random
371   --enable-random=LIST     randomly enable/disable specific components or
372   --disable-random=LIST    component groups. LIST is a comma-separated list
373                            of NAME[:PROB] entries where NAME is a component
374                            (group) and PROB the probability associated with
375                            NAME (default 0.5).
376   --random-seed=VALUE      seed value for --enable/disable-random
377
378 NOTE: Object files are built at the place where configure is launched.
379 EOF
380   exit 0
381 }
382
383 quotes='""'
384
385 log(){
386     echo "$@" >> $logfile
387 }
388
389 log_file(){
390     log BEGIN $1
391     pr -n -t $1 >> $logfile
392     log END $1
393 }
394
395 echolog(){
396     log "$@"
397     echo "$@"
398 }
399
400 warn(){
401     log "WARNING: $*"
402     WARNINGS="${WARNINGS}WARNING: $*\n"
403 }
404
405 die(){
406     echolog "$@"
407     cat <<EOF
408
409 If you think configure made a mistake, make sure you are using the latest
410 version from Git.  If the latest version fails, report the problem to the
411 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
412 EOF
413     if disabled logging; then
414         cat <<EOF
415 Rerun configure with logging enabled (do not use --disable-logging), and
416 include the log this produces with your report.
417 EOF
418     else
419         cat <<EOF
420 Include the log file "$logfile" produced by configure as this will help
421 solve the problem.
422 EOF
423     fi
424     exit 1
425 }
426
427 # Avoid locale weirdness, besides we really just want to translate ASCII.
428 toupper(){
429     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
430 }
431
432 tolower(){
433     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
434 }
435
436 c_escape(){
437     echo "$*" | sed 's/["\\]/\\\0/g'
438 }
439
440 sh_quote(){
441     v=$(echo "$1" | sed "s/'/'\\\\''/g")
442     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
443     echo "$v"
444 }
445
446 cleanws(){
447     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
448 }
449
450 filter(){
451     pat=$1
452     shift
453     for v; do
454         eval "case $v in $pat) echo $v ;; esac"
455     done
456 }
457
458 filter_out(){
459     pat=$1
460     shift
461     for v; do
462         eval "case $v in $pat) ;; *) echo $v ;; esac"
463     done
464 }
465
466 map(){
467     m=$1
468     shift
469     for v; do eval $m; done
470 }
471
472 add_suffix(){
473     suffix=$1
474     shift
475     for v; do echo ${v}${suffix}; done
476 }
477
478 set_all(){
479     value=$1
480     shift
481     for var in $*; do
482         eval $var=$value
483     done
484 }
485
486 set_weak(){
487     value=$1
488     shift
489     for var; do
490         eval : \${$var:=$value}
491     done
492 }
493
494 sanitize_var_name(){
495     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
496 }
497
498 set_safe(){
499     var=$1
500     shift
501     eval $(sanitize_var_name "$var")='$*'
502 }
503
504 get_safe(){
505     eval echo \$$(sanitize_var_name "$1")
506 }
507
508 pushvar(){
509     for pvar in $*; do
510         eval level=\${${pvar}_level:=0}
511         eval ${pvar}_${level}="\$$pvar"
512         eval ${pvar}_level=$(($level+1))
513     done
514 }
515
516 popvar(){
517     for pvar in $*; do
518         eval level=\${${pvar}_level:-0}
519         test $level = 0 && continue
520         eval level=$(($level-1))
521         eval $pvar="\${${pvar}_${level}}"
522         eval ${pvar}_level=$level
523         eval unset ${pvar}_${level}
524     done
525 }
526
527 enable(){
528     set_all yes $*
529 }
530
531 disable(){
532     set_all no $*
533 }
534
535 enable_weak(){
536     set_weak yes $*
537 }
538
539 disable_weak(){
540     set_weak no $*
541 }
542
543 enable_safe(){
544     for var; do
545         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
546     done
547 }
548
549 disable_safe(){
550     for var; do
551         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
552     done
553 }
554
555 do_enable_deep(){
556     for var; do
557         enabled $var && continue
558         eval sel="\$${var}_select"
559         eval sgs="\$${var}_suggest"
560         pushvar var sgs
561         enable_deep $sel
562         popvar sgs
563         enable_deep_weak $sgs
564         popvar var
565     done
566 }
567
568 enable_deep(){
569     do_enable_deep $*
570     enable $*
571 }
572
573 enable_deep_weak(){
574     for var; do
575         disabled $var && continue
576         pushvar var
577         do_enable_deep $var
578         popvar var
579         enable_weak $var
580     done
581 }
582
583 enabled(){
584     test "${1#!}" = "$1" && op== || op=!=
585     eval test "x\$${1#!}" $op "xyes"
586 }
587
588 disabled(){
589     test "${1#!}" = "$1" && op== || op=!=
590     eval test "x\$${1#!}" $op "xno"
591 }
592
593 enabled_all(){
594     for opt; do
595         enabled $opt || return 1
596     done
597 }
598
599 disabled_all(){
600     for opt; do
601         disabled $opt || return 1
602     done
603 }
604
605 enabled_any(){
606     for opt; do
607         enabled $opt && return 0
608     done
609 }
610
611 disabled_any(){
612     for opt; do
613         disabled $opt && return 0
614     done
615     return 1
616 }
617
618 set_default(){
619     for opt; do
620         eval : \${$opt:=\$${opt}_default}
621     done
622 }
623
624 is_in(){
625     value=$1
626     shift
627     for var in $*; do
628         [ $var = $value ] && return 0
629     done
630     return 1
631 }
632
633 do_check_deps(){
634     for cfg; do
635         cfg="${cfg#!}"
636         enabled ${cfg}_checking && die "Circular dependency for $cfg."
637         disabled ${cfg}_checking && continue
638         enable ${cfg}_checking
639         append allopts $cfg
640
641         eval dep_all="\$${cfg}_deps"
642         eval dep_any="\$${cfg}_deps_any"
643         eval dep_sel="\$${cfg}_select"
644         eval dep_sgs="\$${cfg}_suggest"
645         eval dep_ifa="\$${cfg}_if"
646         eval dep_ifn="\$${cfg}_if_any"
647
648         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
649         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
650         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
651
652         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
653         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
654         enabled_all  $dep_all || disable $cfg
655         enabled_any  $dep_any || disable $cfg
656         disabled_any $dep_sel && disable $cfg
657
658         if enabled $cfg; then
659             enable_deep $dep_sel
660             enable_deep_weak $dep_sgs
661         fi
662
663         disable ${cfg}_checking
664     done
665 }
666
667 check_deps(){
668     unset allopts
669
670     do_check_deps "$@"
671
672     for cfg in $allopts; do
673         enabled $cfg || continue
674         eval dep_extralibs="\$${cfg}_extralibs"
675         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
676     done
677 }
678
679 print_config(){
680     pfx=$1
681     files=$2
682     shift 2
683     map 'eval echo "$v \${$v:-no}"' "$@" |
684     awk "BEGIN { split(\"$files\", files) }
685         {
686             c = \"$pfx\" toupper(\$1);
687             v = \$2;
688             sub(/yes/, 1, v);
689             sub(/no/,  0, v);
690             for (f in files) {
691                 file = files[f];
692                 if (file ~ /\\.h\$/) {
693                     printf(\"#define %s %d\\n\", c, v) >>file;
694                 } else if (file ~ /\\.asm\$/) {
695                     printf(\"%%define %s %d\\n\", c, v) >>file;
696                 } else if (file ~ /\\.mak\$/) {
697                     n = -v ? \"\" : \"!\";
698                     printf(\"%s%s=yes\\n\", n, c) >>file;
699                 } else if (file ~ /\\.texi\$/) {
700                     pre = -v ? \"\" : \"@c \";
701                     yesno = \$2;
702                     c2 = tolower(c);
703                     gsub(/_/, \"-\", c2);
704                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
705                 }
706             }
707         }"
708 }
709
710 print_enabled(){
711     suf=$1
712     shift
713     for v; do
714         enabled $v && printf "%s\n" ${v%$suf};
715     done
716 }
717
718 append(){
719     var=$1
720     shift
721     eval "$var=\"\$$var $*\""
722 }
723
724 prepend(){
725     var=$1
726     shift
727     eval "$var=\"$* \$$var\""
728 }
729
730 unique(){
731     var=$1
732     uniq_list=""
733     for tok in $(eval echo \$$var); do
734         uniq_list="$(filter_out $tok $uniq_list) $tok"
735     done
736     eval "$var=\"${uniq_list}\""
737 }
738
739 add_cppflags(){
740     append CPPFLAGS "$@"
741 }
742
743 add_cflags(){
744     append CFLAGS $($cflags_filter "$@")
745 }
746
747 add_cxxflags(){
748     append CXXFLAGS $($cflags_filter "$@")
749 }
750
751 add_asflags(){
752     append ASFLAGS $($asflags_filter "$@")
753 }
754
755 add_ldflags(){
756     append LDFLAGS $($ldflags_filter "$@")
757 }
758
759 add_stripflags(){
760     append ASMSTRIPFLAGS "$@"
761 }
762
763 add_extralibs(){
764     prepend extralibs $($ldflags_filter "$@")
765 }
766
767 add_host_cppflags(){
768     append host_cppflags "$@"
769 }
770
771 add_host_cflags(){
772     append host_cflags $($host_cflags_filter "$@")
773 }
774
775 add_host_ldflags(){
776     append host_ldflags $($host_ldflags_filter "$@")
777 }
778
779 add_compat(){
780     append compat_objs $1
781     shift
782     map 'add_cppflags -D$v' "$@"
783 }
784
785 check_cmd(){
786     log "$@"
787     "$@" >> $logfile 2>&1
788 }
789
790 check_stat(){
791     log check_stat "$@"
792     stat "$1" >> $logfile 2>&1
793 }
794
795 cc_o(){
796     eval printf '%s\\n' $CC_O
797 }
798
799 cc_e(){
800     eval printf '%s\\n' $CC_E
801 }
802
803 check_cc(){
804     log check_cc "$@"
805     cat > $TMPC
806     log_file $TMPC
807     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
808 }
809
810 check_cxx(){
811     log check_cxx "$@"
812     cat > $TMPCPP
813     log_file $TMPCPP
814     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
815 }
816
817 check_oc(){
818     log check_oc "$@"
819     cat > $TMPM
820     log_file $TMPM
821     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
822 }
823
824 check_cpp(){
825     log check_cpp "$@"
826     cat > $TMPC
827     log_file $TMPC
828     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
829 }
830
831 as_o(){
832     eval printf '%s\\n' $AS_O
833 }
834
835 check_as(){
836     log check_as "$@"
837     cat > $TMPS
838     log_file $TMPS
839     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
840 }
841
842 check_inline_asm(){
843     log check_inline_asm "$@"
844     name="$1"
845     code="$2"
846     shift 2
847     disable $name
848     check_cc "$@" <<EOF && enable $name
849 void foo(void){ __asm__ volatile($code); }
850 EOF
851 }
852
853 check_insn(){
854     log check_insn "$@"
855     check_inline_asm ${1}_inline "\"$2\""
856     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
857 }
858
859 check_yasm(){
860     log check_yasm "$@"
861     echo "$1" > $TMPS
862     log_file $TMPS
863     shift 1
864     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
865 }
866
867 ld_o(){
868     eval printf '%s\\n' $LD_O
869 }
870
871 check_ld(){
872     log check_ld "$@"
873     type=$1
874     shift 1
875     flags=$(filter_out '-l*|*.so' $@)
876     libs=$(filter '-l*|*.so' $@)
877     check_$type $($cflags_filter $flags) || return
878     flags=$($ldflags_filter $flags)
879     libs=$($ldflags_filter $libs)
880     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
881 }
882
883 print_include(){
884     hdr=$1
885     test "${hdr%.h}" = "${hdr}" &&
886         echo "#include $hdr"    ||
887         echo "#include <$hdr>"
888 }
889
890 check_code(){
891     log check_code "$@"
892     check=$1
893     headers=$2
894     code=$3
895     shift 3
896     {
897         for hdr in $headers; do
898             print_include $hdr
899         done
900         echo "int main(void) { $code; return 0; }"
901     } | check_$check "$@"
902 }
903
904 check_cppflags(){
905     log check_cppflags "$@"
906     check_cc "$@" <<EOF && append CPPFLAGS "$@"
907 int x;
908 EOF
909 }
910
911 test_cflags(){
912     log test_cflags "$@"
913     set -- $($cflags_filter "$@")
914     check_cc "$@" <<EOF
915 int x;
916 EOF
917 }
918
919 check_cflags(){
920     log check_cflags "$@"
921     test_cflags "$@" && add_cflags "$@"
922 }
923
924 check_cxxflags(){
925     log check_cxxflags "$@"
926     set -- $($cflags_filter "$@")
927     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
928 int x;
929 EOF
930 }
931
932 test_ldflags(){
933     log test_ldflags "$@"
934     check_ld "cc" "$@" <<EOF
935 int main(void){ return 0; }
936 EOF
937 }
938
939 check_ldflags(){
940     log check_ldflags "$@"
941     test_ldflags "$@" && add_ldflags "$@"
942 }
943
944 test_stripflags(){
945     log test_stripflags "$@"
946     # call check_cc to get a fresh TMPO
947     check_cc <<EOF
948 int main(void) { return 0; }
949 EOF
950     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
951 }
952
953 check_stripflags(){
954     log check_stripflags "$@"
955     test_stripflags "$@" && add_stripflags "$@"
956 }
957
958 check_header(){
959     log check_header "$@"
960     header=$1
961     shift
962     disable_safe $header
963     check_cpp "$@" <<EOF && enable_safe $header
964 #include <$header>
965 int x;
966 EOF
967 }
968
969 check_header_oc(){
970     log check_header_oc "$@"
971     rm -f -- "$TMPO"
972     header=$1
973     shift
974     disable_safe $header
975     {
976        echo "#include <$header>"
977        echo "int main(void) { return 0; }"
978     } | check_oc && check_stat "$TMPO" && enable_safe $headers
979 }
980
981 check_func(){
982     log check_func "$@"
983     func=$1
984     shift
985     disable $func
986     check_ld "cc" "$@" <<EOF && enable $func
987 extern int $func();
988 int main(void){ $func(); }
989 EOF
990 }
991
992 check_mathfunc(){
993     log check_mathfunc "$@"
994     func=$1
995     narg=$2
996     shift 2
997     test $narg = 2 && args="f, g" || args="f"
998     disable $func
999     check_ld "cc" "$@" <<EOF && enable $func
1000 #include <math.h>
1001 float foo(float f, float g) { return $func($args); }
1002 int main(void){ return (int) foo; }
1003 EOF
1004 }
1005
1006 check_func_headers(){
1007     log check_func_headers "$@"
1008     headers=$1
1009     funcs=$2
1010     shift 2
1011     {
1012         for hdr in $headers; do
1013             print_include $hdr
1014         done
1015         for func in $funcs; do
1016             echo "long check_$func(void) { return (long) $func; }"
1017         done
1018         echo "int main(void) { return 0; }"
1019     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1020 }
1021
1022 check_class_headers_cpp(){
1023     log check_class_headers_cpp "$@"
1024     headers=$1
1025     classes=$2
1026     shift 2
1027     {
1028         for hdr in $headers; do
1029             echo "#include <$hdr>"
1030         done
1031         echo "int main(void) { "
1032         i=1
1033         for class in $classes; do
1034             echo "$class obj$i;"
1035             i=$(expr $i + 1)
1036         done
1037         echo "return 0; }"
1038     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1039 }
1040
1041 check_cpp_condition(){
1042     log check_cpp_condition "$@"
1043     header=$1
1044     condition=$2
1045     shift 2
1046     check_cpp "$@" <<EOF
1047 #include <$header>
1048 #if !($condition)
1049 #error "unsatisfied condition: $condition"
1050 #endif
1051 EOF
1052 }
1053
1054 check_lib(){
1055     log check_lib "$@"
1056     header="$1"
1057     func="$2"
1058     shift 2
1059     check_header $header && check_func $func "$@" && add_extralibs "$@"
1060 }
1061
1062 check_lib2(){
1063     log check_lib2 "$@"
1064     headers="$1"
1065     funcs="$2"
1066     shift 2
1067     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1068 }
1069
1070 check_lib_cpp(){
1071     log check_lib_cpp "$@"
1072     headers="$1"
1073     classes="$2"
1074     shift 2
1075     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1076 }
1077
1078 check_pkg_config(){
1079     log check_pkg_config "$@"
1080     pkgandversion="$1"
1081     pkg="${1%% *}"
1082     headers="$2"
1083     funcs="$3"
1084     shift 3
1085     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1086     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1087     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1088     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1089         set_safe ${pkg}_cflags $pkg_cflags   &&
1090         set_safe ${pkg}_libs   $pkg_libs
1091 }
1092
1093 check_exec(){
1094     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1095 }
1096
1097 check_exec_crash(){
1098     code=$(cat)
1099
1100     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1101     # are safe but may not be available everywhere.  Thus we use
1102     # raise(SIGTERM) instead.  The check is run in a subshell so we
1103     # can redirect the "Terminated" message from the shell.  SIGBUS
1104     # is not defined by standard C so it is used conditionally.
1105
1106     (check_exec "$@") >> $logfile 2>&1 <<EOF
1107 #include <signal.h>
1108 static void sighandler(int sig){
1109     raise(SIGTERM);
1110 }
1111 int foo(void){
1112     $code
1113 }
1114 int (*func_ptr)(void) = foo;
1115 int main(void){
1116     signal(SIGILL, sighandler);
1117     signal(SIGFPE, sighandler);
1118     signal(SIGSEGV, sighandler);
1119 #ifdef SIGBUS
1120     signal(SIGBUS, sighandler);
1121 #endif
1122     return func_ptr();
1123 }
1124 EOF
1125 }
1126
1127 check_type(){
1128     log check_type "$@"
1129     headers=$1
1130     type=$2
1131     shift 2
1132     disable_safe "$type"
1133     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1134 }
1135
1136 check_struct(){
1137     log check_struct "$@"
1138     headers=$1
1139     struct=$2
1140     member=$3
1141     shift 3
1142     disable_safe "${struct}_${member}"
1143     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1144         enable_safe "${struct}_${member}"
1145 }
1146
1147 check_builtin(){
1148     log check_builtin "$@"
1149     name=$1
1150     headers=$2
1151     builtin=$3
1152     shift 3
1153     disable "$name"
1154     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1155 }
1156
1157 check_compile_assert(){
1158     log check_compile_assert "$@"
1159     name=$1
1160     headers=$2
1161     condition=$3
1162     shift 3
1163     disable "$name"
1164     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1165 }
1166
1167 require(){
1168     name="$1"
1169     header="$2"
1170     func="$3"
1171     shift 3
1172     check_lib $header $func "$@" || die "ERROR: $name not found"
1173 }
1174
1175 require2(){
1176     name="$1"
1177     headers="$2"
1178     func="$3"
1179     shift 3
1180     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1181 }
1182
1183 require_cpp(){
1184     name="$1"
1185     headers="$2"
1186     classes="$3"
1187     shift 3
1188     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1189 }
1190
1191 require_pkg_config(){
1192     pkg="$1"
1193     check_pkg_config "$@" || die "ERROR: $pkg not found"
1194     add_cflags    $(get_safe ${pkg}_cflags)
1195     add_extralibs $(get_safe ${pkg}_libs)
1196 }
1197
1198 require_libfreetype(){
1199     log require_libfreetype "$@"
1200     pkg="freetype2"
1201     check_cmd $pkg_config --exists --print-errors $pkg \
1202       || die "ERROR: $pkg not found"
1203     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1204     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1205     {
1206         echo "#include <ft2build.h>"
1207         echo "#include FT_FREETYPE_H"
1208         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1209         echo "int main(void) { return 0; }"
1210     } | check_ld "cc" $pkg_cflags $pkg_libs \
1211       && set_safe ${pkg}_cflags $pkg_cflags \
1212       && set_safe ${pkg}_libs   $pkg_libs \
1213       || die "ERROR: $pkg not found"
1214     add_cflags    $(get_safe ${pkg}_cflags)
1215     add_extralibs $(get_safe ${pkg}_libs)
1216 }
1217
1218 hostcc_e(){
1219     eval printf '%s\\n' $HOSTCC_E
1220 }
1221
1222 hostcc_o(){
1223     eval printf '%s\\n' $HOSTCC_O
1224 }
1225
1226 check_host_cc(){
1227     log check_host_cc "$@"
1228     cat > $TMPC
1229     log_file $TMPC
1230     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1231 }
1232
1233 check_host_cpp(){
1234     log check_host_cpp "$@"
1235     cat > $TMPC
1236     log_file $TMPC
1237     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1238 }
1239
1240 check_host_cppflags(){
1241     log check_host_cppflags "$@"
1242     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1243 int x;
1244 EOF
1245 }
1246
1247 check_host_cflags(){
1248     log check_host_cflags "$@"
1249     set -- $($host_cflags_filter "$@")
1250     check_host_cc "$@" <<EOF && append host_cflags "$@"
1251 int x;
1252 EOF
1253 }
1254
1255 check_host_cpp_condition(){
1256     log check_host_cpp_condition "$@"
1257     header=$1
1258     condition=$2
1259     shift 2
1260     check_host_cpp "$@" <<EOF
1261 #include <$header>
1262 #if !($condition)
1263 #error "unsatisfied condition: $condition"
1264 #endif
1265 EOF
1266 }
1267
1268 apply(){
1269     file=$1
1270     shift
1271     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1272 }
1273
1274 cp_if_changed(){
1275     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1276     mkdir -p "$(dirname $2)"
1277     $cp_f "$1" "$2"
1278 }
1279
1280 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1281 # system-dependent things.
1282
1283 COMPONENT_LIST="
1284     bsfs
1285     decoders
1286     demuxers
1287     encoders
1288     filters
1289     hwaccels
1290     indevs
1291     muxers
1292     outdevs
1293     parsers
1294     protocols
1295 "
1296
1297 EXAMPLE_LIST="
1298     avio_reading_example
1299     decoding_encoding_example
1300     demuxing_decoding_example
1301     filter_audio_example
1302     filtering_audio_example
1303     filtering_video_example
1304     metadata_example
1305     muxing_example
1306     remuxing_example
1307     resampling_audio_example
1308     scaling_video_example
1309     transcode_aac_example
1310     transcoding_example
1311 "
1312
1313 EXTERNAL_LIBRARY_LIST="
1314     avisynth
1315     bzlib
1316     crystalhd
1317     decklink
1318     frei0r
1319     gnutls
1320     iconv
1321     ladspa
1322     libaacplus
1323     libass
1324     libbluray
1325     libbs2b
1326     libcaca
1327     libcdio
1328     libcelt
1329     libdc1394
1330     libfaac
1331     libfdk_aac
1332     libflite
1333     libfontconfig
1334     libfreetype
1335     libgme
1336     libgsm
1337     libiec61883
1338     libilbc
1339     libmodplug
1340     libmp3lame
1341     libnut
1342     libopencore_amrnb
1343     libopencore_amrwb
1344     libopencv
1345     libopenjpeg
1346     libopus
1347     libpulse
1348     libquvi
1349     librtmp
1350     libschroedinger
1351     libshine
1352     libsoxr
1353     libspeex
1354     libssh
1355     libstagefright_h264
1356     libtheora
1357     libtwolame
1358     libutvideo
1359     libv4l2
1360     libvidstab
1361     libvo_aacenc
1362     libvo_amrwbenc
1363     libvorbis
1364     libvpx
1365     libwavpack
1366     libwebp
1367     libx264
1368     libx265
1369     libxavs
1370     libxvid
1371     libzmq
1372     libzvbi
1373     openal
1374     opencl
1375     opengl
1376     openssl
1377     x11grab
1378     xlib
1379     zlib
1380 "
1381
1382 DOCUMENT_LIST="
1383     doc
1384     htmlpages
1385     manpages
1386     podpages
1387     txtpages
1388 "
1389
1390 FEATURE_LIST="
1391     ftrapv
1392     gray
1393     hardcoded_tables
1394     runtime_cpudetect
1395     safe_bitstream_reader
1396     shared
1397     small
1398     sram
1399     static
1400     swscale_alpha
1401 "
1402
1403 HWACCEL_LIST="
1404     dxva2
1405     vaapi
1406     vda
1407     vdpau
1408     xvmc
1409 "
1410
1411 LIBRARY_LIST="
1412     avcodec
1413     avdevice
1414     avfilter
1415     avformat
1416     avresample
1417     avutil
1418     postproc
1419     swresample
1420     swscale
1421 "
1422
1423 LICENSE_LIST="
1424     gpl
1425     nonfree
1426     version3
1427 "
1428
1429 PROGRAM_LIST="
1430     ffplay
1431     ffprobe
1432     ffserver
1433     ffmpeg
1434 "
1435
1436 SUBSYSTEM_LIST="
1437     dct
1438     dwt
1439     error_resilience
1440     fast_unaligned
1441     fft
1442     lsp
1443     lzo
1444     mdct
1445     network
1446     rdft
1447 "
1448
1449 CONFIG_LIST="
1450     $COMPONENT_LIST
1451     $DOCUMENT_LIST
1452     $EXAMPLE_LIST
1453     $EXTERNAL_LIBRARY_LIST
1454     $FEATURE_LIST
1455     $HWACCEL_LIST
1456     $LICENSE_LIST
1457     $LIBRARY_LIST
1458     $PROGRAM_LIST
1459     $SUBSYSTEM_LIST
1460     fontconfig
1461     incompatible_libav_abi
1462     memalign_hack
1463     memory_poisoning
1464     neon_clobber_test
1465     pic
1466     pod2man
1467     raise_major
1468     thumb
1469     xmm_clobber_test
1470 "
1471
1472 THREADS_LIST="
1473     pthreads
1474     os2threads
1475     w32threads
1476 "
1477
1478 ATOMICS_LIST="
1479     atomics_gcc
1480     atomics_suncc
1481     atomics_win32
1482 "
1483
1484 ARCH_LIST="
1485     aarch64
1486     alpha
1487     arm
1488     avr32
1489     avr32_ap
1490     avr32_uc
1491     bfin
1492     ia64
1493     m68k
1494     mips
1495     mips64
1496     parisc
1497     ppc
1498     ppc64
1499     s390
1500     sh4
1501     sparc
1502     sparc64
1503     tilegx
1504     tilepro
1505     tomi
1506     x86
1507     x86_32
1508     x86_64
1509 "
1510
1511 ARCH_EXT_LIST_ARM="
1512     armv5te
1513     armv6
1514     armv6t2
1515     armv8
1516     neon
1517     vfp
1518     vfpv3
1519 "
1520
1521 ARCH_EXT_LIST_MIPS="
1522     mipsfpu
1523     mips32r2
1524     mipsdspr1
1525     mipsdspr2
1526 "
1527
1528 ARCH_EXT_LIST_X86_SIMD="
1529     amd3dnow
1530     amd3dnowext
1531     avx
1532     avx2
1533     fma3
1534     fma4
1535     mmx
1536     mmxext
1537     sse
1538     sse2
1539     sse3
1540     sse4
1541     sse42
1542     ssse3
1543     xop
1544 "
1545
1546 ARCH_EXT_LIST_PPC="
1547     altivec
1548     dcbzl
1549     ldbrx
1550     ppc4xx
1551     vsx
1552 "
1553
1554 ARCH_EXT_LIST_X86="
1555     $ARCH_EXT_LIST_X86_SIMD
1556     cpunop
1557     i686
1558 "
1559
1560 ARCH_EXT_LIST="
1561     $ARCH_EXT_LIST_ARM
1562     $ARCH_EXT_LIST_PPC
1563     $ARCH_EXT_LIST_X86
1564     $ARCH_EXT_LIST_MIPS
1565     loongson
1566 "
1567
1568 ARCH_FEATURES="
1569     aligned_stack
1570     fast_64bit
1571     fast_clz
1572     fast_cmov
1573     local_aligned_8
1574     local_aligned_16
1575     local_aligned_32
1576 "
1577
1578 BUILTIN_LIST="
1579     atomic_cas_ptr
1580     machine_rw_barrier
1581     MemoryBarrier
1582     mm_empty
1583     rdtsc
1584     sarestart
1585     sync_val_compare_and_swap
1586 "
1587 HAVE_LIST_CMDLINE="
1588     inline_asm
1589     symver
1590     yasm
1591 "
1592
1593 HAVE_LIST_PUB="
1594     bigendian
1595     fast_unaligned
1596     incompatible_libav_abi
1597 "
1598
1599 HEADERS_LIST="
1600     alsa_asoundlib_h
1601     altivec_h
1602     arpa_inet_h
1603     asm_types_h
1604     cdio_paranoia_h
1605     cdio_paranoia_paranoia_h
1606     CL_cl_h
1607     dev_bktr_ioctl_bt848_h
1608     dev_bktr_ioctl_meteor_h
1609     dev_ic_bt8xx_h
1610     dev_video_bktr_ioctl_bt848_h
1611     dev_video_meteor_ioctl_meteor_h
1612     direct_h
1613     dlfcn_h
1614     dxva_h
1615     ES2_gl_h
1616     gsm_h
1617     io_h
1618     mach_mach_time_h
1619     machine_ioctl_bt848_h
1620     machine_ioctl_meteor_h
1621     malloc_h
1622     openjpeg_1_5_openjpeg_h
1623     OpenGL_gl3_h
1624     poll_h
1625     sndio_h
1626     soundcard_h
1627     sys_mman_h
1628     sys_param_h
1629     sys_resource_h
1630     sys_select_h
1631     sys_soundcard_h
1632     sys_time_h
1633     sys_un_h
1634     sys_videoio_h
1635     termios_h
1636     unistd_h
1637     windows_h
1638     winsock2_h
1639 "
1640
1641 MATH_FUNCS="
1642     atanf
1643     atan2f
1644     cbrt
1645     cbrtf
1646     cosf
1647     exp2
1648     exp2f
1649     expf
1650     fminf
1651     isinf
1652     isnan
1653     ldexpf
1654     llrint
1655     llrintf
1656     log2
1657     log2f
1658     log10f
1659     lrint
1660     lrintf
1661     powf
1662     rint
1663     round
1664     roundf
1665     sinf
1666     trunc
1667     truncf
1668 "
1669
1670 SYSTEM_FUNCS="
1671     access
1672     aligned_malloc
1673     clock_gettime
1674     closesocket
1675     CommandLineToArgvW
1676     CoTaskMemFree
1677     CryptGenRandom
1678     dlopen
1679     fcntl
1680     flt_lim
1681     fork
1682     getaddrinfo
1683     gethrtime
1684     getopt
1685     GetProcessAffinityMask
1686     GetProcessMemoryInfo
1687     GetProcessTimes
1688     getrusage
1689     getservbyport
1690     GetSystemTimeAsFileTime
1691     gettimeofday
1692     glob
1693     glXGetProcAddress
1694     inet_aton
1695     isatty
1696     jack_port_get_latency_range
1697     kbhit
1698     localtime_r
1699     lzo1x_999_compress
1700     mach_absolute_time
1701     MapViewOfFile
1702     memalign
1703     mkstemp
1704     mmap
1705     mprotect
1706     nanosleep
1707     PeekNamedPipe
1708     posix_memalign
1709     pthread_cancel
1710     sched_getaffinity
1711     SetConsoleTextAttribute
1712     setmode
1713     setrlimit
1714     Sleep
1715     strerror_r
1716     sysconf
1717     sysctl
1718     usleep
1719     VirtualAlloc
1720     wglGetProcAddress
1721 "
1722
1723 TOOLCHAIN_FEATURES="
1724     as_dn_directive
1725     as_func
1726     asm_mod_q
1727     attribute_may_alias
1728     attribute_packed
1729     ebp_available
1730     ebx_available
1731     gnu_as
1732     gnu_windres
1733     ibm_asm
1734     inline_asm_labels
1735     inline_asm_nonlocal_labels
1736     inline_asm_direct_symbol_refs
1737     pragma_deprecated
1738     rsync_contimeout
1739     symver_asm_label
1740     symver_gnu_asm
1741     vfp_args
1742     xform_asm
1743     xmm_clobbers
1744 "
1745
1746 TYPES_LIST="
1747     socklen_t
1748     struct_addrinfo
1749     struct_group_source_req
1750     struct_ip_mreq_source
1751     struct_ipv6_mreq
1752     struct_pollfd
1753     struct_rusage_ru_maxrss
1754     struct_sctp_event_subscribe
1755     struct_sockaddr_in6
1756     struct_sockaddr_sa_len
1757     struct_sockaddr_storage
1758     struct_stat_st_mtim_tv_nsec
1759     struct_v4l2_frmivalenum_discrete
1760 "
1761
1762 HAVE_LIST="
1763     $ARCH_EXT_LIST
1764     $(add_suffix _external $ARCH_EXT_LIST)
1765     $(add_suffix _inline   $ARCH_EXT_LIST)
1766     $ARCH_FEATURES
1767     $ATOMICS_LIST
1768     $BUILTIN_LIST
1769     $HAVE_LIST_CMDLINE
1770     $HAVE_LIST_PUB
1771     $HEADERS_LIST
1772     $MATH_FUNCS
1773     $SYSTEM_FUNCS
1774     $THREADS_LIST
1775     $TOOLCHAIN_FEATURES
1776     $TYPES_LIST
1777     atomics_native
1778     dos_paths
1779     dxva2api_cobj
1780     dxva2_lib
1781     libc_msvcrt
1782     libdc1394_1
1783     libdc1394_2
1784     makeinfo
1785     perl
1786     pod2man
1787     sdl
1788     texi2html
1789     threads
1790     vdpau_x11
1791     xlib
1792 "
1793
1794 # options emitted with CONFIG_ prefix but not available on the command line
1795 CONFIG_EXTRA="
1796     aandcttables
1797     ac3dsp
1798     audio_frame_queue
1799     audiodsp
1800     blockdsp
1801     bswapdsp
1802     cabac
1803     dsputil
1804     dvprofile
1805     exif
1806     fdctdsp
1807     frame_thread_encoder
1808     gcrypt
1809     golomb
1810     gplv3
1811     h263dsp
1812     h264chroma
1813     h264dsp
1814     h264pred
1815     h264qpel
1816     hpeldsp
1817     huffman
1818     huffyuvdsp
1819     huffyuvencdsp
1820     idctdsp
1821     intrax8
1822     lgplv3
1823     llauddsp
1824     llviddsp
1825     lpc
1826     mpeg_er
1827     mpegaudio
1828     mpegaudiodsp
1829     mpegvideo
1830     mpegvideoenc
1831     nettle
1832     pixblockdsp
1833     qpeldsp
1834     rangecoder
1835     riffdec
1836     riffenc
1837     rtpdec
1838     rtpenc_chain
1839     sinewin
1840     tpeldsp
1841     videodsp
1842     vp3dsp
1843 "
1844
1845 CMDLINE_SELECT="
1846     $ARCH_EXT_LIST
1847     $CONFIG_LIST
1848     $HAVE_LIST_CMDLINE
1849     $THREADS_LIST
1850     asm
1851     cross_compile
1852     debug
1853     extra_warnings
1854     logging
1855     lto
1856     optimizations
1857     rpath
1858     stripping
1859 "
1860
1861 PATHS_LIST="
1862     bindir
1863     datadir
1864     docdir
1865     incdir
1866     libdir
1867     mandir
1868     prefix
1869     shlibdir
1870 "
1871
1872 CMDLINE_SET="
1873     $PATHS_LIST
1874     ar
1875     arch
1876     as
1877     assert_level
1878     build_suffix
1879     cc
1880     cpu
1881     cross_prefix
1882     cxx
1883     dep_cc
1884     doxygen
1885     extra_version
1886     gas
1887     host_cc
1888     host_cflags
1889     host_ld
1890     host_ldflags
1891     host_libs
1892     host_os
1893     install
1894     ld
1895     logfile
1896     malloc_prefix
1897     nm
1898     optflags
1899     pkg_config
1900     pkg_config_flags
1901     progs_suffix
1902     random_seed
1903     ranlib
1904     samples
1905     strip
1906     sws_max_filter_size
1907     sysinclude
1908     sysroot
1909     target_exec
1910     target_os
1911     target_path
1912     target_samples
1913     tempprefix
1914     toolchain
1915     valgrind
1916     yasmexe
1917 "
1918
1919 CMDLINE_APPEND="
1920     extra_cflags
1921     extra_cxxflags
1922     host_cppflags
1923 "
1924
1925 # code dependency declarations
1926
1927 # architecture extensions
1928
1929 armv5te_deps="arm"
1930 armv6_deps="arm"
1931 armv6t2_deps="arm"
1932 armv8_deps="aarch64"
1933 neon_deps_any="aarch64 arm"
1934 vfp_deps_any="aarch64 arm"
1935 vfpv3_deps="vfp"
1936
1937 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1938
1939 mipsfpu_deps="mips"
1940 mips32r2_deps="mips"
1941 mipsdspr1_deps="mips"
1942 mipsdspr2_deps="mips"
1943
1944 altivec_deps="ppc"
1945 ppc4xx_deps="ppc"
1946 vsx_deps="ppc"
1947
1948 cpunop_deps="i686"
1949 x86_64_select="i686"
1950 x86_64_suggest="fast_cmov"
1951
1952 amd3dnow_deps="mmx"
1953 amd3dnowext_deps="amd3dnow"
1954 i686_deps="x86"
1955 mmx_deps="x86"
1956 mmxext_deps="mmx"
1957 sse_deps="mmxext"
1958 sse2_deps="sse"
1959 sse3_deps="sse2"
1960 ssse3_deps="sse3"
1961 sse4_deps="ssse3"
1962 sse42_deps="sse4"
1963 avx_deps="sse42"
1964 xop_deps="avx"
1965 fma3_deps="avx"
1966 fma4_deps="avx"
1967 avx2_deps="avx"
1968
1969 mmx_external_deps="yasm"
1970 mmx_inline_deps="inline_asm"
1971 mmx_suggest="mmx_external mmx_inline"
1972
1973 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1974     eval dep=\$${ext}_deps
1975     eval ${ext}_external_deps='"${dep}_external"'
1976     eval ${ext}_inline_deps='"${dep}_inline"'
1977     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1978 done
1979
1980 aligned_stack_if_any="aarch64 ppc x86"
1981 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1982 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1983 fast_unaligned_if_any="aarch64 ppc x86"
1984
1985 need_memalign="altivec neon sse"
1986
1987 # system capabilities
1988
1989 symver_if_any="symver_asm_label symver_gnu_asm"
1990
1991 # threading support
1992 atomics_gcc_if="sync_val_compare_and_swap"
1993 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1994 atomics_win32_if="MemoryBarrier"
1995 atomics_native_if_any="$ATOMICS_LIST"
1996 w32threads_deps="atomics_native"
1997 threads_if_any="$THREADS_LIST"
1998
1999 # subsystems
2000 dct_select="rdft"
2001 dsputil_select="fdctdsp idctdsp pixblockdsp"
2002 error_resilience_select="dsputil"
2003 frame_thread_encoder_deps="encoders threads"
2004 intrax8_select="error_resilience"
2005 mdct_select="fft"
2006 rdft_select="fft"
2007 mpeg_er_select="error_resilience"
2008 mpegaudio_select="mpegaudiodsp"
2009 mpegaudiodsp_select="dct"
2010 mpegvideo_select="blockdsp dsputil h264chroma hpeldsp idctdsp videodsp"
2011 mpegvideoenc_select="dsputil mpegvideo pixblockdsp qpeldsp"
2012
2013 # decoders / encoders
2014 aac_decoder_select="mdct sinewin"
2015 aac_encoder_select="audio_frame_queue mdct sinewin"
2016 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2017 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2018 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2019 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
2020 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
2021 aic_decoder_select="golomb idctdsp"
2022 alac_encoder_select="lpc"
2023 als_decoder_select="bswapdsp"
2024 amrnb_decoder_select="lsp"
2025 amrwb_decoder_select="lsp"
2026 amv_decoder_select="sp5x_decoder exif"
2027 amv_encoder_select="aandcttables mpegvideoenc"
2028 ape_decoder_select="bswapdsp llauddsp"
2029 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2030 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2031 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2032 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2033 atrac1_decoder_select="mdct sinewin"
2034 atrac3_decoder_select="mdct"
2035 atrac3p_decoder_select="mdct sinewin"
2036 avrn_decoder_select="exif"
2037 bink_decoder_select="blockdsp hpeldsp"
2038 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2039 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2040 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2041 cllc_decoder_select="bswapdsp"
2042 comfortnoise_encoder_select="lpc"
2043 cook_decoder_select="audiodsp mdct sinewin"
2044 cscd_decoder_select="lzo"
2045 cscd_decoder_suggest="zlib"
2046 dca_decoder_select="mdct"
2047 dirac_decoder_select="dsputil dwt golomb videodsp"
2048 dnxhd_decoder_select="blockdsp idctdsp"
2049 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2050 dvvideo_decoder_select="dvprofile idctdsp"
2051 dvvideo_encoder_select="dsputil dvprofile fdctdsp pixblockdsp"
2052 dxa_decoder_select="zlib"
2053 eac3_decoder_select="ac3_decoder"
2054 eac3_encoder_select="ac3_encoder"
2055 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2056 eatgq_decoder_select="aandcttables"
2057 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2058 exr_decoder_select="zlib"
2059 ffv1_decoder_select="golomb rangecoder"
2060 ffv1_encoder_select="rangecoder"
2061 ffvhuff_decoder_select="huffyuv_decoder"
2062 ffvhuff_encoder_select="huffyuv_encoder"
2063 fic_decoder_select="golomb"
2064 flac_decoder_select="golomb"
2065 flac_encoder_select="bswapdsp golomb lpc"
2066 flashsv_decoder_select="zlib"
2067 flashsv_encoder_select="zlib"
2068 flashsv2_encoder_select="zlib"
2069 flashsv2_decoder_select="zlib"
2070 flv_decoder_select="h263_decoder"
2071 flv_encoder_select="h263_encoder"
2072 fourxm_decoder_select="blockdsp bswapdsp"
2073 fraps_decoder_select="bswapdsp huffman"
2074 g2m_decoder_select="blockdsp idctdsp zlib"
2075 g729_decoder_select="audiodsp"
2076 h261_decoder_select="mpeg_er mpegvideo"
2077 h261_encoder_select="aandcttables mpegvideoenc"
2078 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2079 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2080 h263i_decoder_select="h263_decoder"
2081 h263p_encoder_select="h263_encoder"
2082 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2083 h264_decoder_suggest="error_resilience"
2084 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2085 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2086 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2087 iac_decoder_select="imc_decoder"
2088 imc_decoder_select="bswapdsp fft mdct sinewin"
2089 indeo3_decoder_select="hpeldsp"
2090 interplay_video_decoder_select="hpeldsp"
2091 jpegls_decoder_select="golomb mjpeg_decoder"
2092 jpegls_encoder_select="golomb"
2093 jv_decoder_select="blockdsp"
2094 lagarith_decoder_select="huffyuvdsp"
2095 ljpeg_encoder_select="aandcttables idctdsp"
2096 loco_decoder_select="golomb"
2097 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2098 metasound_decoder_select="lsp mdct sinewin"
2099 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2100 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2101 mjpeg_encoder_select="aandcttables mpegvideoenc"
2102 mjpegb_decoder_select="mjpeg_decoder"
2103 mlp_decoder_select="mlp_parser"
2104 motionpixels_decoder_select="bswapdsp"
2105 mp1_decoder_select="mpegaudio"
2106 mp1float_decoder_select="mpegaudio"
2107 mp2_decoder_select="mpegaudio"
2108 mp2float_decoder_select="mpegaudio"
2109 mp3_decoder_select="mpegaudio"
2110 mp3adu_decoder_select="mpegaudio"
2111 mp3adufloat_decoder_select="mpegaudio"
2112 mp3float_decoder_select="mpegaudio"
2113 mp3on4_decoder_select="mpegaudio"
2114 mp3on4float_decoder_select="mpegaudio"
2115 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2116 mpc8_decoder_select="mpegaudiodsp"
2117 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2118 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2119 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2120 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2121 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2122 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2123 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2124 mpeg4_encoder_select="h263_encoder"
2125 msmpeg4v1_decoder_select="h263_decoder"
2126 msmpeg4v2_decoder_select="h263_decoder"
2127 msmpeg4v2_encoder_select="h263_encoder"
2128 msmpeg4v3_decoder_select="h263_decoder"
2129 msmpeg4v3_encoder_select="h263_encoder"
2130 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2131 mxpeg_decoder_select="mjpeg_decoder"
2132 nellymoser_decoder_select="mdct sinewin"
2133 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2134 nuv_decoder_select="idctdsp lzo"
2135 on2avc_decoder_select="mdct"
2136 opus_decoder_deps="swresample"
2137 png_decoder_select="zlib"
2138 png_encoder_select="huffyuvencdsp zlib"
2139 prores_decoder_select="blockdsp idctdsp"
2140 prores_encoder_select="fdctdsp"
2141 qcelp_decoder_select="lsp"
2142 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2143 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2144 ra_144_decoder_select="audiodsp"
2145 ralf_decoder_select="golomb"
2146 rawvideo_decoder_select="dsputil bswapdsp"
2147 rtjpeg_decoder_select="dsputil"
2148 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2149 rv10_encoder_select="h263_encoder"
2150 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2151 rv20_encoder_select="h263_encoder"
2152 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2153 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2154 shorten_decoder_select="golomb"
2155 sipr_decoder_select="lsp"
2156 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2157 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2158 sonic_decoder_select="golomb rangecoder"
2159 sonic_encoder_select="golomb rangecoder"
2160 sonic_ls_encoder_select="golomb rangecoder"
2161 sp5x_decoder_select="mjpeg_decoder"
2162 svq1_decoder_select="hpeldsp"
2163 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2164 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2165 svq3_decoder_suggest="zlib"
2166 tak_decoder_select="audiodsp"
2167 theora_decoder_select="vp3_decoder"
2168 thp_decoder_select="mjpeg_decoder"
2169 tiff_decoder_suggest="zlib"
2170 tiff_encoder_suggest="zlib"
2171 truehd_decoder_select="mlp_parser"
2172 truemotion2_decoder_select="bswapdsp"
2173 truespeech_decoder_select="bswapdsp"
2174 tscc_decoder_select="zlib"
2175 twinvq_decoder_select="mdct lsp sinewin"
2176 utvideo_decoder_select="bswapdsp"
2177 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2178 vble_decoder_select="huffyuvdsp"
2179 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
2180 vc1image_decoder_select="vc1_decoder"
2181 vorbis_decoder_select="mdct"
2182 vorbis_encoder_select="mdct"
2183 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2184 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2185 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2186 vp6a_decoder_select="vp6_decoder"
2187 vp6f_decoder_select="vp6_decoder"
2188 vp7_decoder_select="h264pred videodsp"
2189 vp8_decoder_select="h264pred videodsp"
2190 vp9_decoder_select="videodsp vp9_parser"
2191 webp_decoder_select="vp8_decoder"
2192 wmalossless_decoder_select="llauddsp"
2193 wmapro_decoder_select="mdct sinewin"
2194 wmav1_decoder_select="mdct sinewin"
2195 wmav1_encoder_select="mdct sinewin"
2196 wmav2_decoder_select="mdct sinewin"
2197 wmav2_encoder_select="mdct sinewin"
2198 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2199 wmv1_decoder_select="h263_decoder"
2200 wmv1_encoder_select="h263_encoder"
2201 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2202 wmv2_encoder_select="h263_encoder"
2203 wmv3_decoder_select="vc1_decoder"
2204 wmv3image_decoder_select="wmv3_decoder"
2205 zerocodec_decoder_select="zlib"
2206 zlib_decoder_select="zlib"
2207 zlib_encoder_select="zlib"
2208 zmbv_decoder_select="zlib"
2209 zmbv_encoder_select="zlib"
2210
2211 # hardware accelerators
2212 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2213 dxva2_deps="dxva2api_h"
2214 vaapi_deps="va_va_h"
2215 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2216 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2217 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2218 xvmc_deps="X11_extensions_XvMClib_h"
2219
2220 h263_vaapi_hwaccel_deps="vaapi"
2221 h263_vaapi_hwaccel_select="h263_decoder"
2222 h263_vdpau_hwaccel_deps="vdpau"
2223 h263_vdpau_hwaccel_select="h263_decoder"
2224 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2225 h264_dxva2_hwaccel_deps="dxva2"
2226 h264_dxva2_hwaccel_select="h264_decoder"
2227 h264_vaapi_hwaccel_deps="vaapi"
2228 h264_vaapi_hwaccel_select="h264_decoder"
2229 h264_vda_decoder_deps="vda"
2230 h264_vda_decoder_select="h264_decoder"
2231 h264_vda_hwaccel_deps="vda"
2232 h264_vda_hwaccel_select="h264_decoder"
2233 h264_vda_old_hwaccel_deps="vda"
2234 h264_vda_old_hwaccel_select="h264_decoder"
2235 h264_vdpau_decoder_deps="vdpau"
2236 h264_vdpau_decoder_select="h264_decoder"
2237 h264_vdpau_hwaccel_deps="vdpau"
2238 h264_vdpau_hwaccel_select="h264_decoder"
2239 mpeg_vdpau_decoder_deps="vdpau"
2240 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2241 mpeg_xvmc_hwaccel_deps="xvmc"
2242 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2243 mpeg1_vdpau_decoder_deps="vdpau"
2244 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2245 mpeg1_vdpau_hwaccel_deps="vdpau"
2246 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2247 mpeg1_xvmc_hwaccel_deps="xvmc"
2248 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2249 mpeg2_crystalhd_decoder_select="crystalhd"
2250 mpeg2_dxva2_hwaccel_deps="dxva2"
2251 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2252 mpeg2_vaapi_hwaccel_deps="vaapi"
2253 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2254 mpeg2_vdpau_hwaccel_deps="vdpau"
2255 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2256 mpeg2_xvmc_hwaccel_deps="xvmc"
2257 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2258 mpeg4_crystalhd_decoder_select="crystalhd"
2259 mpeg4_vaapi_hwaccel_deps="vaapi"
2260 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2261 mpeg4_vdpau_decoder_deps="vdpau"
2262 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2263 mpeg4_vdpau_hwaccel_deps="vdpau"
2264 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2265 msmpeg4_crystalhd_decoder_select="crystalhd"
2266 vc1_crystalhd_decoder_select="crystalhd"
2267 vc1_dxva2_hwaccel_deps="dxva2"
2268 vc1_dxva2_hwaccel_select="vc1_decoder"
2269 vc1_vaapi_hwaccel_deps="vaapi"
2270 vc1_vaapi_hwaccel_select="vc1_decoder"
2271 vc1_vdpau_decoder_deps="vdpau"
2272 vc1_vdpau_decoder_select="vc1_decoder"
2273 vc1_vdpau_hwaccel_deps="vdpau"
2274 vc1_vdpau_hwaccel_select="vc1_decoder"
2275 wmv3_crystalhd_decoder_select="crystalhd"
2276 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2277 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2278 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2279 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2280
2281 # parsers
2282 h264_parser_select="h264_decoder"
2283 hevc_parser_select="hevc_decoder"
2284 mpegvideo_parser_select="mpegvideo"
2285 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2286 vc1_parser_select="mpegvideo vc1_decoder"
2287
2288 # external libraries
2289 libaacplus_encoder_deps="libaacplus"
2290 libcelt_decoder_deps="libcelt"
2291 libfaac_encoder_deps="libfaac"
2292 libfaac_encoder_select="audio_frame_queue"
2293 libfdk_aac_decoder_deps="libfdk_aac"
2294 libfdk_aac_encoder_deps="libfdk_aac"
2295 libfdk_aac_encoder_select="audio_frame_queue"
2296 libgme_demuxer_deps="libgme"
2297 libgsm_decoder_deps="libgsm"
2298 libgsm_encoder_deps="libgsm"
2299 libgsm_ms_decoder_deps="libgsm"
2300 libgsm_ms_encoder_deps="libgsm"
2301 libilbc_decoder_deps="libilbc"
2302 libilbc_encoder_deps="libilbc"
2303 libmodplug_demuxer_deps="libmodplug"
2304 libmp3lame_encoder_deps="libmp3lame"
2305 libmp3lame_encoder_select="audio_frame_queue"
2306 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2307 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2308 libopencore_amrnb_encoder_select="audio_frame_queue"
2309 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2310 libopenjpeg_decoder_deps="libopenjpeg"
2311 libopenjpeg_encoder_deps="libopenjpeg"
2312 libopus_decoder_deps="libopus"
2313 libopus_encoder_deps="libopus"
2314 libopus_encoder_select="audio_frame_queue"
2315 libquvi_demuxer_deps="libquvi"
2316 libschroedinger_decoder_deps="libschroedinger"
2317 libschroedinger_encoder_deps="libschroedinger"
2318 libshine_encoder_deps="libshine"
2319 libshine_encoder_select="audio_frame_queue"
2320 libspeex_decoder_deps="libspeex"
2321 libspeex_encoder_deps="libspeex"
2322 libspeex_encoder_select="audio_frame_queue"
2323 libstagefright_h264_decoder_deps="libstagefright_h264"
2324 libtheora_encoder_deps="libtheora"
2325 libtwolame_encoder_deps="libtwolame"
2326 libvo_aacenc_encoder_deps="libvo_aacenc"
2327 libvo_aacenc_encoder_select="audio_frame_queue"
2328 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2329 libvorbis_decoder_deps="libvorbis"
2330 libvorbis_encoder_deps="libvorbis"
2331 libvorbis_encoder_select="audio_frame_queue"
2332 libvpx_vp8_decoder_deps="libvpx"
2333 libvpx_vp8_encoder_deps="libvpx"
2334 libvpx_vp9_decoder_deps="libvpx"
2335 libvpx_vp9_encoder_deps="libvpx"
2336 libwavpack_encoder_deps="libwavpack"
2337 libwebp_encoder_deps="libwebp"
2338 libx264_encoder_deps="libx264"
2339 libx264rgb_encoder_deps="libx264"
2340 libx265_encoder_deps="libx265"
2341 libxavs_encoder_deps="libxavs"
2342 libxvid_encoder_deps="libxvid"
2343 libutvideo_decoder_deps="libutvideo"
2344 libutvideo_encoder_deps="libutvideo"
2345 libzvbi_teletext_decoder_deps="libzvbi"
2346
2347 # demuxers / muxers
2348 ac3_demuxer_select="ac3_parser"
2349 asf_demuxer_select="riffdec"
2350 asf_muxer_select="riffenc"
2351 asf_stream_muxer_select="asf_muxer"
2352 avi_demuxer_select="riffdec exif"
2353 avi_muxer_select="riffenc"
2354 avisynth_demuxer_deps="avisynth"
2355 avisynth_demuxer_select="riffdec"
2356 caf_demuxer_select="riffdec"
2357 dirac_demuxer_select="dirac_parser"
2358 dts_demuxer_select="dca_parser"
2359 dtshd_demuxer_select="dca_parser"
2360 dv_demuxer_select="dvprofile"
2361 dv_muxer_select="dvprofile"
2362 dxa_demuxer_select="riffdec"
2363 eac3_demuxer_select="ac3_parser"
2364 f4v_muxer_select="mov_muxer"
2365 flac_demuxer_select="flac_parser"
2366 hds_muxer_select="flv_muxer"
2367 hls_muxer_select="mpegts_muxer"
2368 image2_alias_pix_demuxer_select="image2_demuxer"
2369 image2_brender_pix_demuxer_select="image2_demuxer"
2370 ipod_muxer_select="mov_muxer"
2371 ismv_muxer_select="mov_muxer"
2372 libnut_demuxer_deps="libnut"
2373 libnut_muxer_deps="libnut"
2374 matroska_audio_muxer_select="matroska_muxer"
2375 matroska_demuxer_select="riffdec"
2376 matroska_demuxer_suggest="bzlib lzo zlib"
2377 matroska_muxer_select="riffenc"
2378 mmf_muxer_select="riffenc"
2379 mov_demuxer_select="riffdec"
2380 mov_demuxer_suggest="zlib"
2381 mov_muxer_select="riffenc rtpenc_chain"
2382 mp3_demuxer_select="mpegaudio_parser"
2383 mp4_muxer_select="mov_muxer"
2384 mpegts_muxer_select="adts_muxer latm_muxer"
2385 mpegtsraw_demuxer_select="mpegts_demuxer"
2386 mxf_d10_muxer_select="mxf_muxer"
2387 nut_muxer_select="riffenc"
2388 nuv_demuxer_select="riffdec"
2389 ogg_demuxer_select="golomb"
2390 psp_muxer_select="mov_muxer"
2391 rtp_demuxer_select="sdp_demuxer"
2392 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2393 rtsp_demuxer_select="http_protocol rtpdec"
2394 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2395 sap_demuxer_select="sdp_demuxer"
2396 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2397 sdp_demuxer_select="rtpdec"
2398 smoothstreaming_muxer_select="ismv_muxer"
2399 spdif_muxer_select="aac_parser"
2400 tak_demuxer_select="tak_parser"
2401 tg2_muxer_select="mov_muxer"
2402 tgp_muxer_select="mov_muxer"
2403 vobsub_demuxer_select="mpegps_demuxer"
2404 w64_demuxer_select="wav_demuxer"
2405 w64_muxer_select="wav_muxer"
2406 wav_demuxer_select="riffdec"
2407 wav_muxer_select="riffenc"
2408 webm_muxer_select="riffenc"
2409 wtv_demuxer_select="riffdec"
2410 wtv_muxer_select="riffenc"
2411 xmv_demuxer_select="riffdec"
2412 xwma_demuxer_select="riffdec"
2413
2414 # indevs / outdevs
2415 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2416 alsa_outdev_deps="alsa_asoundlib_h"
2417 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2418 avfoundation_indev_select="avfoundation"
2419 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2420 caca_outdev_deps="libcaca"
2421 decklink_outdev_deps="decklink pthreads"
2422 decklink_outdev_extralibs="-lstdc++"
2423 dshow_indev_deps="IBaseFilter"
2424 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2425 dv1394_indev_deps="dv1394"
2426 dv1394_indev_select="dv_demuxer"
2427 fbdev_indev_deps="linux_fb_h"
2428 fbdev_outdev_deps="linux_fb_h"
2429 gdigrab_indev_deps="CreateDIBSection"
2430 gdigrab_indev_extralibs="-lgdi32"
2431 gdigrab_indev_select="bmp_decoder"
2432 iec61883_indev_deps="libiec61883"
2433 jack_indev_deps="jack_jack_h sem_timedwait"
2434 lavfi_indev_deps="avfilter"
2435 libcdio_indev_deps="libcdio"
2436 libdc1394_indev_deps="libdc1394"
2437 libv4l2_indev_deps="libv4l2"
2438 openal_indev_deps="openal"
2439 opengl_outdev_deps="opengl"
2440 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2441 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2442 pulse_indev_deps="libpulse"
2443 pulse_outdev_deps="libpulse"
2444 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2445 qtkit_indev_select="qtkit"
2446 sdl_outdev_deps="sdl"
2447 sndio_indev_deps="sndio_h"
2448 sndio_outdev_deps="sndio_h"
2449 v4l_indev_deps="linux_videodev_h"
2450 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2451 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2452 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2453 vfwcap_indev_extralibs="-lavicap32"
2454 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2455 xv_outdev_extralibs="-lXv -lX11 -lXext"
2456 x11grab_indev_deps="x11grab"
2457
2458 # protocols
2459 bluray_protocol_deps="libbluray"
2460 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2461 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2462 ffrtmpcrypt_protocol_select="tcp_protocol"
2463 ffrtmphttp_protocol_deps="!librtmp_protocol"
2464 ffrtmphttp_protocol_select="http_protocol"
2465 ftp_protocol_select="tcp_protocol"
2466 gopher_protocol_select="network"
2467 http_protocol_select="tcp_protocol"
2468 httpproxy_protocol_select="tcp_protocol"
2469 https_protocol_select="tls_protocol"
2470 librtmp_protocol_deps="librtmp"
2471 librtmpe_protocol_deps="librtmp"
2472 librtmps_protocol_deps="librtmp"
2473 librtmpt_protocol_deps="librtmp"
2474 librtmpte_protocol_deps="librtmp"
2475 libssh_protocol_deps="libssh"
2476 mmsh_protocol_select="http_protocol"
2477 mmst_protocol_select="network"
2478 rtmp_protocol_deps="!librtmp_protocol"
2479 rtmp_protocol_select="tcp_protocol"
2480 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2481 rtmps_protocol_deps="!librtmp_protocol"
2482 rtmps_protocol_select="tls_protocol"
2483 rtmpt_protocol_select="ffrtmphttp_protocol"
2484 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2485 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2486 rtp_protocol_select="udp_protocol"
2487 sctp_protocol_deps="struct_sctp_event_subscribe"
2488 sctp_protocol_select="network"
2489 srtp_protocol_select="rtp_protocol"
2490 tcp_protocol_select="network"
2491 tls_protocol_deps_any="openssl gnutls"
2492 tls_protocol_select="tcp_protocol"
2493 udp_protocol_select="network"
2494 unix_protocol_deps="sys_un_h"
2495 unix_protocol_select="network"
2496
2497 # filters
2498 aconvert_filter_deps="swresample"
2499 amovie_filter_deps="avcodec avformat"
2500 aresample_filter_deps="swresample"
2501 ass_filter_deps="libass"
2502 asyncts_filter_deps="avresample"
2503 atempo_filter_deps="avcodec"
2504 atempo_filter_select="rdft"
2505 azmq_filter_deps="libzmq"
2506 blackframe_filter_deps="gpl"
2507 boxblur_filter_deps="gpl"
2508 bs2b_filter_deps="libbs2b"
2509 colormatrix_filter_deps="gpl"
2510 cropdetect_filter_deps="gpl"
2511 dctdnoiz_filter_deps="avcodec"
2512 dctdnoiz_filter_select="dct"
2513 delogo_filter_deps="gpl"
2514 deshake_filter_deps="avcodec"
2515 deshake_filter_select="dsputil"
2516 drawtext_filter_deps="libfreetype"
2517 ebur128_filter_deps="gpl"
2518 flite_filter_deps="libflite"
2519 frei0r_filter_deps="frei0r dlopen"
2520 frei0r_filter_extralibs='$ldl'
2521 frei0r_src_filter_deps="frei0r dlopen"
2522 frei0r_src_filter_extralibs='$ldl'
2523 geq_filter_deps="gpl"
2524 histeq_filter_deps="gpl"
2525 hqdn3d_filter_deps="gpl"
2526 interlace_filter_deps="gpl"
2527 kerndeint_filter_deps="gpl"
2528 ladspa_filter_deps="ladspa dlopen"
2529 ladspa_filter_extralibs='$ldl'
2530 mcdeint_filter_deps="avcodec gpl"
2531 movie_filter_deps="avcodec avformat"
2532 mp_filter_deps="gpl avcodec swscale inline_asm"
2533 mpdecimate_filter_deps="gpl avcodec"
2534 mpdecimate_filter_select="dsputil pixblockdsp"
2535 mptestsrc_filter_deps="gpl"
2536 negate_filter_deps="lut_filter"
2537 perspective_filter_deps="gpl"
2538 ocv_filter_deps="libopencv"
2539 owdenoise_filter_deps="gpl"
2540 pan_filter_deps="swresample"
2541 phase_filter_deps="gpl"
2542 pp_filter_deps="gpl postproc"
2543 pullup_filter_deps="gpl"
2544 removelogo_filter_deps="avcodec avformat swscale"
2545 resample_filter_deps="avresample"
2546 sab_filter_deps="gpl swscale"
2547 scale_filter_deps="swscale"
2548 smartblur_filter_deps="gpl swscale"
2549 showspectrum_filter_deps="avcodec"
2550 showspectrum_filter_select="rdft"
2551 spp_filter_deps="gpl avcodec"
2552 spp_filter_select="dsputil fft idctdsp fdctdsp pixblockdsp"
2553 stereo3d_filter_deps="gpl"
2554 subtitles_filter_deps="avformat avcodec libass"
2555 super2xsai_filter_deps="gpl"
2556 tinterlace_filter_deps="gpl"
2557 vidstabdetect_filter_deps="libvidstab"
2558 vidstabtransform_filter_deps="libvidstab"
2559 pixfmts_super2xsai_test_deps="super2xsai_filter"
2560 tinterlace_merge_test_deps="tinterlace_filter"
2561 tinterlace_pad_test_deps="tinterlace_filter"
2562 zmq_filter_deps="libzmq"
2563 zoompan_filter_deps="swscale"
2564
2565 # examples
2566 avio_reading="avformat avcodec avutil"
2567 avcodec_example_deps="avcodec avutil"
2568 demuxing_decoding_example_deps="avcodec avformat avutil"
2569 filter_audio_example_deps="avfilter avutil"
2570 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2571 filtering_video_example_deps="avfilter avcodec avformat avutil"
2572 metadata_example_deps="avformat avutil"
2573 muxing_example_deps="avcodec avformat avutil swscale"
2574 remuxing_example_deps="avcodec avformat avutil"
2575 resampling_audio_example_deps="avutil swresample"
2576 scaling_video_example_deps="avutil swscale"
2577 transcode_aac_example_deps="avcodec avformat swresample"
2578 transcoding_example_deps="avfilter avcodec avformat avutil"
2579
2580 # libraries, in linking order
2581 avcodec_deps="avutil"
2582 avdevice_deps="avformat avcodec avutil"
2583 avfilter_deps="avutil"
2584 avformat_deps="avcodec avutil"
2585 avresample_deps="avutil"
2586 postproc_deps="avutil gpl"
2587 swresample_deps="avutil"
2588 swscale_deps="avutil"
2589
2590 # programs
2591 ffmpeg_deps="avcodec avfilter avformat swresample"
2592 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2593                null_filter
2594                setpts_filter trim_filter"
2595 ffplay_deps="avcodec avformat swscale swresample sdl"
2596 ffplay_libs='$sdl_libs'
2597 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2598 ffprobe_deps="avcodec avformat"
2599 ffserver_deps="avformat fork sarestart"
2600 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2601
2602 # documentation
2603 podpages_deps="perl"
2604 manpages_deps="perl pod2man"
2605 htmlpages_deps="perl texi2html"
2606 txtpages_deps="perl makeinfo"
2607 doc_deps_any="manpages htmlpages podpages txtpages"
2608
2609 # default parameters
2610
2611 logfile="config.log"
2612
2613 # installation paths
2614 prefix_default="/usr/local"
2615 bindir_default='${prefix}/bin'
2616 datadir_default='${prefix}/share/ffmpeg'
2617 docdir_default='${prefix}/share/doc/ffmpeg'
2618 incdir_default='${prefix}/include'
2619 libdir_default='${prefix}/lib'
2620 mandir_default='${prefix}/share/man'
2621 shlibdir_default="$libdir_default"
2622
2623 # toolchain
2624 ar_default="ar"
2625 cc_default="gcc"
2626 cxx_default="g++"
2627 host_cc_default="gcc"
2628 cp_f="cp -f"
2629 doxygen_default="doxygen"
2630 install="install"
2631 ln_s="ln -s -f"
2632 nm_default="nm -g"
2633 objformat="elf"
2634 pkg_config_default=pkg-config
2635 ranlib_default="ranlib"
2636 strip_default="strip"
2637 yasmexe_default="yasm"
2638 windres_default="windres"
2639
2640 nogas=":"
2641
2642 # OS
2643 target_os_default=$(tolower $(uname -s))
2644 host_os=$target_os_default
2645
2646 # machine
2647 if test "$target_os_default" = aix; then
2648     arch_default=$(uname -p)
2649     strip_default="strip -X32_64"
2650 else
2651     arch_default=$(uname -m)
2652 fi
2653 cpu="generic"
2654
2655 # configurable options
2656 enable $PROGRAM_LIST
2657 enable $DOCUMENT_LIST
2658 enable $EXAMPLE_LIST
2659 enable $(filter_out avresample $LIBRARY_LIST)
2660 enable stripping
2661
2662 enable asm
2663 enable debug
2664 enable doc
2665 enable optimizations
2666 enable runtime_cpudetect
2667 enable safe_bitstream_reader
2668 enable static
2669 enable swscale_alpha
2670
2671 sws_max_filter_size_default=256
2672 set_default sws_max_filter_size
2673
2674 # Enable hwaccels by default.
2675 enable dxva2 vaapi vda vdpau xvmc
2676 enable xlib
2677
2678 # build settings
2679 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2680 LIBPREF="lib"
2681 LIBSUF=".a"
2682 FULLNAME='$(NAME)$(BUILDSUF)'
2683 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2684 SLIBPREF="lib"
2685 SLIBSUF=".so"
2686 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2687 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2688 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2689 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2690 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2691 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2692
2693 asflags_filter=echo
2694 cflags_filter=echo
2695 ldflags_filter=echo
2696
2697 AS_C='-c'
2698 AS_O='-o $@'
2699 CC_C='-c'
2700 CC_E='-E -o $@'
2701 CC_O='-o $@'
2702 CXX_C='-c'
2703 CXX_O='-o $@'
2704 LD_O='-o $@'
2705 LD_LIB='-l%'
2706 LD_PATH='-L'
2707 HOSTCC_C='-c'
2708 HOSTCC_E='-E -o $@'
2709 HOSTCC_O='-o $@'
2710 HOSTLD_O='-o $@'
2711
2712 host_libs='-lm'
2713 host_cflags_filter=echo
2714 host_ldflags_filter=echo
2715
2716 target_path='$(CURDIR)'
2717
2718 # since the object filename is not given with the -MM flag, the compiler
2719 # is only able to print the basename, and we must add the path ourselves
2720 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2721 DEPFLAGS='-MM'
2722
2723 # find source path
2724 if test -f configure; then
2725     source_path=.
2726 else
2727     source_path=$(cd $(dirname "$0"); pwd)
2728     echo "$source_path" | grep -q '[[:blank:]]' &&
2729         die "Out of tree builds are impossible with whitespace in source path."
2730     test -e "$source_path/config.h" &&
2731         die "Out of tree builds are impossible with config.h in source dir."
2732 fi
2733
2734 for v in "$@"; do
2735     r=${v#*=}
2736     l=${v%"$r"}
2737     r=$(sh_quote "$r")
2738     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2739 done
2740
2741 find_things(){
2742     thing=$1
2743     pattern=$2
2744     file=$source_path/$3
2745     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2746 }
2747
2748 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2749 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2750 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2751 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2752 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2753 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2754 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2755 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2756 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2757 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2758 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2759
2760 ALL_COMPONENTS="
2761     $BSF_LIST
2762     $DECODER_LIST
2763     $DEMUXER_LIST
2764     $ENCODER_LIST
2765     $FILTER_LIST
2766     $HWACCEL_LIST
2767     $INDEV_LIST
2768     $MUXER_LIST
2769     $OUTDEV_LIST
2770     $PARSER_LIST
2771     $PROTOCOL_LIST
2772 "
2773
2774 for n in $COMPONENT_LIST; do
2775     v=$(toupper ${n%s})_LIST
2776     eval enable \$$v
2777     eval ${n}_if_any="\$$v"
2778 done
2779
2780 enable $ARCH_EXT_LIST
2781
2782 die_unknown(){
2783     echo "Unknown option \"$1\"."
2784     echo "See $0 --help for available options."
2785     exit 1
2786 }
2787
2788 print_3_columns() {
2789     cat | tr ' ' '\n' | sort | pr -r -3 -t
2790 }
2791
2792 show_list() {
2793     suffix=_$1
2794     shift
2795     echo $* | sed s/$suffix//g | print_3_columns
2796     exit 0
2797 }
2798
2799 rand_list(){
2800     IFS=', '
2801     set -- $*
2802     unset IFS
2803     for thing; do
2804         comp=${thing%:*}
2805         prob=${thing#$comp}
2806         prob=${prob#:}
2807         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2808         echo "prob ${prob:-0.5}"
2809         printf '%s\n' $comp
2810     done
2811 }
2812
2813 do_random(){
2814     action=$1
2815     shift
2816     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2817     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2818 }
2819
2820 for opt do
2821     optval="${opt#*=}"
2822     case "$opt" in
2823         --extra-ldflags=*)
2824             add_ldflags $optval
2825         ;;
2826         --extra-libs=*)
2827             add_extralibs $optval
2828         ;;
2829         --disable-devices)
2830             disable $INDEV_LIST $OUTDEV_LIST
2831         ;;
2832         --enable-debug=*)
2833             debuglevel="$optval"
2834         ;;
2835         --disable-programs)
2836             disable $PROGRAM_LIST
2837         ;;
2838         --disable-everything)
2839             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2840         ;;
2841         --disable-all)
2842             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2843             disable $LIBRARY_LIST $PROGRAM_LIST doc
2844         ;;
2845         --enable-random|--disable-random)
2846             action=${opt%%-random}
2847             do_random ${action#--} $COMPONENT_LIST
2848         ;;
2849         --enable-random=*|--disable-random=*)
2850             action=${opt%%-random=*}
2851             do_random ${action#--} $optval
2852         ;;
2853         --enable-*=*|--disable-*=*)
2854             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2855             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2856             eval list=\$$(toupper $thing)_LIST
2857             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2858             list=$(filter "$name" $list)
2859             [ "$list" = "" ] && warn "Option $opt did not match anything"
2860             $action $list
2861         ;;
2862         --enable-?*|--disable-?*)
2863             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2864             if is_in $option $COMPONENT_LIST; then
2865                 test $action = disable && action=unset
2866                 eval $action \$$(toupper ${option%s})_LIST
2867             elif is_in $option $CMDLINE_SELECT; then
2868                 $action $option
2869             else
2870                 die_unknown $opt
2871             fi
2872         ;;
2873         --list-*)
2874             NAME="${opt#--list-}"
2875             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2876             NAME=${NAME%s}
2877             eval show_list $NAME \$$(toupper $NAME)_LIST
2878         ;;
2879         --help|-h) show_help
2880         ;;
2881         --fatal-warnings) enable fatal_warnings
2882         ;;
2883         *)
2884             optname="${opt%%=*}"
2885             optname="${optname#--}"
2886             optname=$(echo "$optname" | sed 's/-/_/g')
2887             if is_in $optname $CMDLINE_SET; then
2888                 eval $optname='$optval'
2889             elif is_in $optname $CMDLINE_APPEND; then
2890                 append $optname "$optval"
2891             else
2892                 die_unknown $opt
2893             fi
2894         ;;
2895     esac
2896 done
2897
2898 disabled logging && logfile=/dev/null
2899
2900 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2901 set >> $logfile
2902
2903 test -n "$cross_prefix" && enable cross_compile
2904
2905 if enabled cross_compile; then
2906     test -n "$arch" && test -n "$target_os" ||
2907         die "Must specify target arch and OS when cross-compiling"
2908 fi
2909
2910 ar_default="${cross_prefix}${ar_default}"
2911 cc_default="${cross_prefix}${cc_default}"
2912 cxx_default="${cross_prefix}${cxx_default}"
2913 nm_default="${cross_prefix}${nm_default}"
2914 pkg_config_default="${cross_prefix}${pkg_config_default}"
2915 ranlib_default="${cross_prefix}${ranlib_default}"
2916 strip_default="${cross_prefix}${strip_default}"
2917 windres_default="${cross_prefix}${windres_default}"
2918
2919 sysinclude_default="${sysroot}/usr/include"
2920
2921 test -n "$valgrind" && toolchain="valgrind-memcheck"
2922
2923 case "$toolchain" in
2924     clang-asan)
2925         cc_default="clang"
2926         add_cflags  -fsanitize=address
2927         add_ldflags -fsanitize=address
2928     ;;
2929     clang-tsan)
2930         cc_default="clang"
2931         add_cflags  -fsanitize=thread -pie
2932         add_ldflags -fsanitize=thread -pie
2933     ;;
2934     clang-usan)
2935         cc_default="clang"
2936         add_cflags  -fsanitize=undefined
2937         add_ldflags -fsanitize=undefined
2938     ;;
2939     gcc-asan)
2940         cc_default="gcc"
2941         add_cflags  -fsanitize=address
2942         add_ldflags -fsanitize=address
2943     ;;
2944     gcc-tsan)
2945         cc_default="gcc"
2946         add_cflags  -fsanitize=thread -pie -fPIC
2947         add_ldflags -fsanitize=thread -pie -fPIC
2948     ;;
2949     gcc-usan)
2950         cc_default="gcc"
2951         add_cflags  -fsanitize=undefined
2952         add_ldflags -fsanitize=undefined
2953     ;;
2954     valgrind-massif)
2955         target_exec_default=${valgrind:-"valgrind"}
2956         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"
2957     ;;
2958     valgrind-memcheck)
2959         target_exec_default=${valgrind:-"valgrind"}
2960         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2961     ;;
2962     msvc)
2963         # Check whether the current MSVC version needs the C99 converter.
2964         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2965         # support enough of C99 to build ffmpeg. Default to the new
2966         # behaviour if the regexp was unable to match anything, since this
2967         # successfully parses the version number of existing supported
2968         # versions that require the converter (MSVC 2010 and 2012).
2969         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2970         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2971             cc_default="cl"
2972         else
2973             cc_default="c99wrap cl"
2974         fi
2975         ld_default="link"
2976         nm_default="dumpbin -symbols"
2977         ar_default="lib"
2978         target_os_default="win32"
2979         # Use a relative path for TMPDIR. This makes sure all the
2980         # ffconf temp files are written with a relative path, avoiding
2981         # issues with msys/win32 path conversion for MSVC parameters
2982         # such as -Fo<file> or -out:<file>.
2983         TMPDIR=.
2984     ;;
2985     icl)
2986         cc_default="icl"
2987         ld_default="xilink"
2988         nm_default="dumpbin -symbols"
2989         ar_default="xilib"
2990         target_os_default="win32"
2991         TMPDIR=.
2992     ;;
2993     gcov)
2994         add_cflags  -fprofile-arcs -ftest-coverage
2995         add_ldflags -fprofile-arcs -ftest-coverage
2996     ;;
2997     hardened)
2998         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2999         add_ldflags -Wl,-z,relro -Wl,-z,now
3000     ;;
3001     ?*)
3002         die "Unknown toolchain $toolchain"
3003     ;;
3004 esac
3005
3006 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3007     target_exec target_os yasmexe
3008 enabled cross_compile || host_cc_default=$cc
3009 set_default host_cc
3010
3011 if ! $pkg_config --version >/dev/null 2>&1; then
3012     warn "$pkg_config not found, library detection may fail."
3013     pkg_config=false
3014 fi
3015
3016 if test $doxygen != $doxygen_default && \
3017   ! $doxygen --version >/dev/null 2>&1; then
3018     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3019 fi
3020
3021 exesuf() {
3022     case $1 in
3023         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3024     esac
3025 }
3026
3027 EXESUF=$(exesuf $target_os)
3028 HOSTEXESUF=$(exesuf $host_os)
3029
3030 # set temporary file name
3031 : ${TMPDIR:=$TEMPDIR}
3032 : ${TMPDIR:=$TMP}
3033 : ${TMPDIR:=/tmp}
3034
3035 if [ -n "$tempprefix" ] ; then
3036     mktemp(){
3037         echo $tempprefix.${HOSTNAME}.${UID}
3038     }
3039 elif ! check_cmd mktemp -u XXXXXX; then
3040     # simple replacement for missing mktemp
3041     # NOT SAFE FOR GENERAL USE
3042     mktemp(){
3043         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3044     }
3045 fi
3046
3047 tmpfile(){
3048     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3049         (set -C; exec > $tmp) 2>/dev/null ||
3050         die "Unable to create temporary file in $TMPDIR."
3051     append TMPFILES $tmp
3052     eval $1=$tmp
3053 }
3054
3055 trap 'rm -f -- $TMPFILES' EXIT
3056
3057 tmpfile TMPASM .asm
3058 tmpfile TMPC   .c
3059 tmpfile TMPCPP .cpp
3060 tmpfile TMPE   $EXESUF
3061 tmpfile TMPH   .h
3062 tmpfile TMPM   .m
3063 tmpfile TMPO   .o
3064 tmpfile TMPS   .S
3065 tmpfile TMPSH  .sh
3066 tmpfile TMPV   .ver
3067
3068 unset -f mktemp
3069
3070 chmod +x $TMPE
3071
3072 # make sure we can execute files in $TMPDIR
3073 cat > $TMPSH 2>> $logfile <<EOF
3074 #! /bin/sh
3075 EOF
3076 chmod +x $TMPSH >> $logfile 2>&1
3077 if ! $TMPSH >> $logfile 2>&1; then
3078     cat <<EOF
3079 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3080 variable to another directory and make sure that it is not mounted noexec.
3081 EOF
3082     die "Sanity test failed."
3083 fi
3084
3085 ccc_flags(){
3086     for flag; do
3087         case $flag in
3088             -std=c99)           echo -c99                       ;;
3089             -mcpu=*)            echo -arch ${flag#*=}           ;;
3090             -mieee)             echo -ieee                      ;;
3091             -O*|-fast)          echo $flag                      ;;
3092             -fno-math-errno)    echo -assume nomath_errno       ;;
3093             -g)                 echo -g3                        ;;
3094             -Wall)              echo -msg_enable level2         ;;
3095             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3096             -Wl,*)              echo $flag                      ;;
3097             -f*|-W*)                                            ;;
3098             *)                  echo $flag                      ;;
3099         esac
3100    done
3101 }
3102
3103 cparser_flags(){
3104     for flag; do
3105         case $flag in
3106             -Wno-switch)             echo -Wno-switch-enum ;;
3107             -Wno-format-zero-length) ;;
3108             -Wdisabled-optimization) ;;
3109             -Wno-pointer-sign)       echo -Wno-other ;;
3110             *)                       echo $flag ;;
3111         esac
3112     done
3113 }
3114
3115 msvc_common_flags(){
3116     for flag; do
3117         case $flag in
3118             # In addition to specifying certain flags under the compiler
3119             # specific filters, they must be specified here as well or else the
3120             # generic catch all at the bottom will print the original flag.
3121             -Wall)                ;;
3122             -std=c99)             ;;
3123             # Common flags
3124             -fomit-frame-pointer) ;;
3125             -g)                   echo -Z7 ;;
3126             -fno-math-errno)      ;;
3127             -fno-common)          ;;
3128             -fno-signed-zeros)    ;;
3129             -fPIC)                ;;
3130             -mthumb)              ;;
3131             -march=*)             ;;
3132             -lz)                  echo zlib.lib ;;
3133             -lavifil32)           echo vfw32.lib ;;
3134             -lavicap32)           echo vfw32.lib user32.lib ;;
3135             -l*)                  echo ${flag#-l}.lib ;;
3136             *)                    echo $flag ;;
3137         esac
3138     done
3139 }
3140
3141 msvc_flags(){
3142     msvc_common_flags "$@"
3143     for flag; do
3144         case $flag in
3145             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3146                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3147                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3148                                        -wd4554 \
3149                                        -wd4273 ;;
3150         esac
3151     done
3152 }
3153
3154 icl_flags(){
3155     msvc_common_flags "$@"
3156     for flag; do
3157         case $flag in
3158             # Despite what Intel's documentation says -Wall, which is supported
3159             # on Windows, does enable remarks so disable them here.
3160             -Wall)                echo $flag -Qdiag-disable:remark ;;
3161             -std=c99)             echo -Qstd=c99 ;;
3162             -flto)                echo -ipo ;;
3163         esac
3164     done
3165 }
3166
3167 icc_flags(){
3168     for flag; do
3169         case $flag in
3170             -flto)                echo -ipo ;;
3171             *)                    echo $flag ;;
3172         esac
3173     done
3174 }
3175
3176 pgi_flags(){
3177     for flag; do
3178         case $flag in
3179             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3180             -fomit-frame-pointer) echo -Mnoframe ;;
3181             -g)                   echo -gopt ;;
3182             *)                    echo $flag ;;
3183         esac
3184     done
3185 }
3186
3187 suncc_flags(){
3188     for flag; do
3189         case $flag in
3190             -march=*|-mcpu=*)
3191                 case "${flag#*=}" in
3192                     native)                   echo -xtarget=native       ;;
3193                     v9|niagara)               echo -xarch=sparc          ;;
3194                     ultrasparc)               echo -xarch=sparcvis       ;;
3195                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3196                     i586|pentium)             echo -xchip=pentium        ;;
3197                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3198                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3199                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3200                     pentium4*)          echo -xtarget=pentium4           ;;
3201                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3202                     *-sse3)             echo -xarch=sse3                 ;;
3203                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3204                     bonnell)                   echo -xarch=ssse3         ;;
3205                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3206                     westmere)                  echo -xtarget=westmere    ;;
3207                     silvermont)                echo -xarch=sse4_2        ;;
3208                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3209                     core-avx*|ivybridge|haswell|broadwell)
3210                                                echo -xarch=avx           ;;
3211                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3212                     btver1)                    echo -xarch=amdsse4a      ;;
3213                     btver2|bdver*)             echo -xarch=avx           ;;
3214                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3215                     k8|opteron|athlon64|athlon-fx)
3216                                                echo -xarch=sse2a         ;;
3217                     athlon*)                   echo -xarch=pentium_proa  ;;
3218                 esac
3219                 ;;
3220             -std=c99)             echo -xc99              ;;
3221             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3222             -fPIC)                echo -KPIC -xcode=pic32 ;;
3223             -W*,*)                echo $flag              ;;
3224             -f*-*|-W*|-mimpure-text)                      ;;
3225             -shared)              echo -G                 ;;
3226             *)                    echo $flag              ;;
3227         esac
3228     done
3229 }
3230
3231 tms470_flags(){
3232     for flag; do
3233         case $flag in
3234             -march=*|-mcpu=*)
3235                 case "${flag#*=}" in
3236                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3237                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3238                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3239                     armv6*|arm11*)          echo -mv=6   ;;
3240                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3241                                             echo -mv=5e  ;;
3242                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3243                 esac
3244                 ;;
3245             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3246             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3247             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3248             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3249             -msoft-float)   echo --float_support=vfplib       ;;
3250             -O[0-3]|-mf=*)  echo $flag                        ;;
3251             -g)             echo -g -mn                       ;;
3252             -pds=*)         echo $flag                        ;;
3253             -D*|-I*)        echo $flag                        ;;
3254             --gcc|--abi=*)  echo $flag                        ;;
3255             -me)            echo $flag                        ;;
3256         esac
3257     done
3258 }
3259
3260 probe_cc(){
3261     pfx=$1
3262     _cc=$2
3263
3264     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3265     unset _ld_o _ldflags _ld_lib _ld_path
3266     unset _depflags _DEPCMD _DEPFLAGS
3267     _flags_filter=echo
3268
3269     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3270         true # no-op to avoid reading stdin in following checks
3271     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3272         _type=llvm_gcc
3273         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3274         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3275         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3276         _cflags_speed='-O3'
3277         _cflags_size='-Os'
3278     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3279         _type=gcc
3280         gcc_version=$($_cc --version | head -n1)
3281         gcc_basever=$($_cc -dumpversion)
3282         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3283         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3284         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3285         if ! $_cc -dumpversion | grep -q '^2\.'; then
3286             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3287         fi
3288         _cflags_speed='-O3'
3289         _cflags_size='-Os'
3290     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3291         _type=icc
3292         _ident=$($_cc --version | head -n1)
3293         _depflags='-MMD'
3294         _cflags_speed='-O3'
3295         _cflags_size='-Os'
3296         _cflags_noopt='-O1'
3297         _flags_filter=icc_flags
3298     elif $_cc -v 2>&1 | grep -q xlc; then
3299         _type=xlc
3300         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3301         _cflags_speed='-O5'
3302         _cflags_size='-O5 -qcompact'
3303     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3304         _type=ccc
3305         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3306         _DEPFLAGS='-M'
3307         _cflags_speed='-fast'
3308         _cflags_size='-O1'
3309         _flags_filter=ccc_flags
3310     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3311         test -d "$sysroot" || die "No valid sysroot specified."
3312         _type=armcc
3313         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3314         armcc_conf="$PWD/armcc.conf"
3315         $_cc --arm_linux_configure                 \
3316              --arm_linux_config_file="$armcc_conf" \
3317              --configure_sysroot="$sysroot"        \
3318              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3319              die "Error creating armcc configuration file."
3320         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3321         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3322         as_default="${cross_prefix}gcc"
3323         _depflags='-MMD'
3324         _cflags_speed='-O3'
3325         _cflags_size='-Os'
3326     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3327         _type=tms470
3328         _ident=$($_cc -version | head -n1 | tr -s ' ')
3329         _flags='--gcc --abi=eabi -me'
3330         _cc_e='-ppl -fe=$@'
3331         _cc_o='-fe=$@'
3332         _depflags='-ppa -ppd=$(@:.o=.d)'
3333         _cflags_speed='-O3 -mf=5'
3334         _cflags_size='-O3 -mf=2'
3335         _flags_filter=tms470_flags
3336     elif $_cc -v 2>&1 | grep -q clang; then
3337         _type=clang
3338         _ident=$($_cc --version | head -n1)
3339         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3340         _cflags_speed='-O3'
3341         _cflags_size='-Os'
3342     elif $_cc -V 2>&1 | grep -q Sun; then
3343         _type=suncc
3344         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3345         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3346         _DEPFLAGS='-xM1 -xc99'
3347         _ldflags='-std=c99'
3348         _cflags_speed='-O5'
3349         _cflags_size='-O5 -xspace'
3350         _flags_filter=suncc_flags
3351     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3352         _type=pathscale
3353         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3354         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3355         _cflags_speed='-O2'
3356         _cflags_size='-Os'
3357         _flags_filter='filter_out -Wdisabled-optimization'
3358     elif $_cc -v 2>&1 | grep -q Open64; then
3359         _type=open64
3360         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3361         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3362         _cflags_speed='-O2'
3363         _cflags_size='-Os'
3364         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3365     elif $_cc -V 2>&1 | grep -q Portland; then
3366         _type=pgi
3367         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3368         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3369         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3370         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3371         _cflags_noopt="-O"
3372         _flags_filter=pgi_flags
3373     elif $_cc 2>&1 | grep -q Microsoft; then
3374         _type=msvc
3375         _ident=$($cc 2>&1 | head -n1)
3376         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3377         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3378         _cflags_speed="-O2"
3379         _cflags_size="-O1"
3380         if $_cc 2>&1 | grep -q Linker; then
3381             _ld_o='-out:$@'
3382         else
3383             _ld_o='-Fe$@'
3384         fi
3385         _cc_o='-Fo$@'
3386         _cc_e='-P -Fi$@'
3387         _flags_filter=msvc_flags
3388         _ld_lib='lib%.a'
3389         _ld_path='-libpath:'
3390         _flags='-nologo'
3391         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3392         if [ $pfx = hostcc ]; then
3393             append _cflags -Dsnprintf=_snprintf
3394         fi
3395         disable stripping
3396     elif $_cc 2>&1 | grep -q Intel; then
3397         _type=icl
3398         _ident=$($cc 2>&1 | head -n1)
3399         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3400         # Not only is O3 broken on 13.x+ but it is slower on all previous
3401         # versions (tested) as well.
3402         _cflags_speed="-O2"
3403         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3404         if $_cc 2>&1 | grep -q Linker; then
3405             _ld_o='-out:$@'
3406         else
3407             _ld_o='-Fe$@'
3408         fi
3409         _cc_o='-Fo$@'
3410         _cc_e='-P'
3411         _flags_filter=icl_flags
3412         _ld_lib='lib%.a'
3413         _ld_path='-libpath:'
3414         # -Qdiag-error to make icl error when seeing certain unknown arguments
3415         _flags='-nologo -Qdiag-error:4044,10157'
3416         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3417         # with MSVC which enables it by default.
3418         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3419         if [ $pfx = hostcc ]; then
3420             append _cflags -Dsnprintf=_snprintf
3421         fi
3422     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3423         _type=cparser
3424         _ident=$($_cc --version | head -n1)
3425         _depflags='-MMD'
3426         _cflags_speed='-O4'
3427         _cflags_size='-O2'
3428         _flags_filter=cparser_flags
3429     fi
3430
3431     eval ${pfx}_type=\$_type
3432     eval ${pfx}_ident=\$_ident
3433 }
3434
3435 set_ccvars(){
3436     eval ${1}_C=\${_cc_c-\${${1}_C}}
3437     eval ${1}_E=\${_cc_e-\${${1}_E}}
3438     eval ${1}_O=\${_cc_o-\${${1}_O}}
3439
3440     if [ -n "$_depflags" ]; then
3441         eval ${1}_DEPFLAGS=\$_depflags
3442     else
3443         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3444         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3445         eval DEP${1}FLAGS=\$_flags
3446     fi
3447 }
3448
3449 probe_cc cc "$cc"
3450 cflags_filter=$_flags_filter
3451 cflags_speed=$_cflags_speed
3452 cflags_size=$_cflags_size
3453 cflags_noopt=$_cflags_noopt
3454 add_cflags $_flags $_cflags
3455 cc_ldflags=$_ldflags
3456 set_ccvars CC
3457
3458 probe_cc hostcc "$host_cc"
3459 host_cflags_filter=$_flags_filter
3460 add_host_cflags  $_flags $_cflags
3461 set_ccvars HOSTCC
3462
3463 test -n "$cc_type" && enable $cc_type ||
3464     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3465
3466 : ${as_default:=$cc}
3467 : ${dep_cc_default:=$cc}
3468 : ${ld_default:=$cc}
3469 : ${host_ld_default:=$host_cc}
3470 set_default ar as dep_cc ld host_ld windres
3471
3472 probe_cc as "$as"
3473 asflags_filter=$_flags_filter
3474 add_asflags $_flags $_cflags
3475 set_ccvars AS
3476
3477 probe_cc ld "$ld"
3478 ldflags_filter=$_flags_filter
3479 add_ldflags $_flags $_ldflags
3480 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3481 LD_O=${_ld_o-$LD_O}
3482 LD_LIB=${_ld_lib-$LD_LIB}
3483 LD_PATH=${_ld_path-$LD_PATH}
3484
3485 probe_cc hostld "$host_ld"
3486 host_ldflags_filter=$_flags_filter
3487 add_host_ldflags $_flags $_ldflags
3488 HOSTLD_O=${_ld_o-$HOSTLD_O}
3489
3490 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3491     probe_cc depcc "$dep_cc"
3492     CCDEP=${_DEPCMD:-$DEPCMD}
3493     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3494     DEPCCFLAGS=$_flags
3495 fi
3496
3497 if $ar 2>&1 | grep -q Microsoft; then
3498     arflags="-nologo"
3499     ar_o='-out:$@'
3500 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3501     arflags="rq"
3502     ar_o='$@'
3503 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3504     arflags='-Xany -r -c'
3505     ar_o='$@'
3506 else
3507     arflags="rc"
3508     ar_o='$@'
3509 fi
3510
3511 add_cflags $extra_cflags
3512 add_cxxflags $extra_cxxflags
3513 add_asflags $extra_cflags
3514
3515 if test -n "$sysroot"; then
3516     case "$cc_type" in
3517         gcc|llvm_gcc|clang)
3518             add_cppflags --sysroot="$sysroot"
3519             add_ldflags --sysroot="$sysroot"
3520 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3521             add_cppflags -isysroot "$sysroot"
3522             add_ldflags -isysroot "$sysroot"
3523         ;;
3524         tms470)
3525             add_cppflags -I"$sysinclude"
3526             add_ldflags  --sysroot="$sysroot"
3527         ;;
3528     esac
3529 fi
3530
3531 if test "$cpu" = host; then
3532     enabled cross_compile &&
3533         die "--cpu=host makes no sense when cross-compiling."
3534
3535     case "$cc_type" in
3536         gcc|llvm_gcc)
3537             check_native(){
3538                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3539                 sed -n "/cc1.*$1=/{
3540                             s/.*$1=\\([^ ]*\\).*/\\1/
3541                             p
3542                             q
3543                         }" $TMPE
3544             }
3545             cpu=$(check_native -march || check_native -mcpu)
3546         ;;
3547     esac
3548
3549     test "${cpu:-host}" = host &&
3550         die "--cpu=host not supported with compiler $cc"
3551 fi
3552
3553 # Deal with common $arch aliases
3554 case "$arch" in
3555     aarch64|arm64)
3556         arch="aarch64"
3557     ;;
3558     arm*|iPad*|iPhone*)
3559         arch="arm"
3560     ;;
3561     mips*|IP*)
3562         arch="mips"
3563     ;;
3564     parisc*|hppa*)
3565         arch="parisc"
3566     ;;
3567     "Power Macintosh"|ppc*|powerpc*)
3568         arch="ppc"
3569     ;;
3570     s390|s390x)
3571         arch="s390"
3572     ;;
3573     sh4|sh)
3574         arch="sh4"
3575     ;;
3576     sun4u|sparc*)
3577         arch="sparc"
3578     ;;
3579     tilegx|tile-gx)
3580         arch="tilegx"
3581     ;;
3582     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3583         arch="x86"
3584     ;;
3585 esac
3586
3587 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3588 enable $arch
3589
3590 # Add processor-specific flags
3591 if enabled aarch64; then
3592
3593     case $cpu in
3594         armv*)
3595             cpuflags="-march=$cpu"
3596         ;;
3597         *)
3598             cpuflags="-mcpu=$cpu"
3599         ;;
3600     esac
3601
3602 elif enabled alpha; then
3603
3604     cpuflags="-mcpu=$cpu"
3605
3606 elif enabled arm; then
3607
3608     check_arm_arch() {
3609         check_cpp_condition stddef.h \
3610             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3611             $cpuflags
3612     }
3613
3614     probe_arm_arch() {
3615         if   check_arm_arch 4;        then echo armv4;
3616         elif check_arm_arch 4T;       then echo armv4t;
3617         elif check_arm_arch 5;        then echo armv5;
3618         elif check_arm_arch 5E;       then echo armv5e;
3619         elif check_arm_arch 5T;       then echo armv5t;
3620         elif check_arm_arch 5TE;      then echo armv5te;
3621         elif check_arm_arch 5TEJ;     then echo armv5te;
3622         elif check_arm_arch 6;        then echo armv6;
3623         elif check_arm_arch 6J;       then echo armv6j;
3624         elif check_arm_arch 6K;       then echo armv6k;
3625         elif check_arm_arch 6Z;       then echo armv6z;
3626         elif check_arm_arch 6ZK;      then echo armv6zk;
3627         elif check_arm_arch 6T2;      then echo armv6t2;
3628         elif check_arm_arch 7;        then echo armv7;
3629         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3630         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3631         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3632         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3633         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3634         fi
3635     }
3636
3637     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3638
3639     case $cpu in
3640         armv*)
3641             cpuflags="-march=$cpu"
3642             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3643         ;;
3644         *)
3645             cpuflags="-mcpu=$cpu"
3646             case $cpu in
3647                 cortex-a*)                               subarch=armv7a  ;;
3648                 cortex-r*)                               subarch=armv7r  ;;
3649                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3650                 arm11*)                                  subarch=armv6   ;;
3651                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3652                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3653                 *)                             subarch=$(probe_arm_arch) ;;
3654             esac
3655         ;;
3656     esac
3657
3658     case "$subarch" in
3659         armv5t*)    enable fast_clz                ;;
3660         armv[6-8]*)
3661             enable fast_clz
3662             disabled fast_unaligned || enable fast_unaligned
3663             ;;
3664     esac
3665
3666 elif enabled avr32; then
3667
3668     case $cpu in
3669         ap7[02]0[0-2])
3670             subarch="avr32_ap"
3671             cpuflags="-mpart=$cpu"
3672         ;;
3673         ap)
3674             subarch="avr32_ap"
3675             cpuflags="-march=$cpu"
3676         ;;
3677         uc3[ab]*)
3678             subarch="avr32_uc"
3679             cpuflags="-mcpu=$cpu"
3680         ;;
3681         uc)
3682             subarch="avr32_uc"
3683             cpuflags="-march=$cpu"
3684         ;;
3685     esac
3686
3687 elif enabled bfin; then
3688
3689     cpuflags="-mcpu=$cpu"
3690
3691 elif enabled mips; then
3692
3693     cpuflags="-march=$cpu"
3694
3695     case $cpu in
3696         24kc)
3697             disable mipsfpu
3698             disable mipsdspr1
3699             disable mipsdspr2
3700         ;;
3701         24kf*)
3702             disable mipsdspr1
3703             disable mipsdspr2
3704         ;;
3705         24kec|34kc|1004kc)
3706             disable mipsfpu
3707             disable mipsdspr2
3708         ;;
3709         24kef*|34kf*|1004kf*)
3710             disable mipsdspr2
3711         ;;
3712         74kc)
3713             disable mipsfpu
3714         ;;
3715     esac
3716
3717 elif enabled ppc; then
3718
3719     disable ldbrx
3720     disable vsx
3721
3722     case $(tolower $cpu) in
3723         601|ppc601|powerpc601)
3724             cpuflags="-mcpu=601"
3725             disable altivec
3726         ;;
3727         603*|ppc603*|powerpc603*)
3728             cpuflags="-mcpu=603"
3729             disable altivec
3730         ;;
3731         604*|ppc604*|powerpc604*)
3732             cpuflags="-mcpu=604"
3733             disable altivec
3734         ;;
3735         g3|75*|ppc75*|powerpc75*)
3736             cpuflags="-mcpu=750"
3737             disable altivec
3738         ;;
3739         g4|745*|ppc745*|powerpc745*)
3740             cpuflags="-mcpu=7450"
3741         ;;
3742         74*|ppc74*|powerpc74*)
3743             cpuflags="-mcpu=7400"
3744         ;;
3745         g5|970|ppc970|powerpc970)
3746             cpuflags="-mcpu=970"
3747         ;;
3748         power[3-8]*)
3749             cpuflags="-mcpu=$cpu"
3750         ;;
3751         cell)
3752             cpuflags="-mcpu=cell"
3753             enable ldbrx
3754         ;;
3755         e500mc)
3756             cpuflags="-mcpu=e500mc"
3757             disable altivec
3758         ;;
3759         e500v2)
3760             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3761             disable altivec
3762             disable dcbzl
3763         ;;
3764         e500)
3765             cpuflags="-mcpu=8540 -mhard-float"
3766             disable altivec
3767             disable dcbzl
3768         ;;
3769     esac
3770
3771 elif enabled sparc; then
3772
3773     case $cpu in
3774         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3775             cpuflags="-mcpu=$cpu"
3776         ;;
3777         ultrasparc*|niagara[234])
3778             cpuflags="-mcpu=$cpu"
3779         ;;
3780     esac
3781
3782 elif enabled x86; then
3783
3784     case $cpu in
3785         i[345]86|pentium)
3786             cpuflags="-march=$cpu"
3787             disable mmx
3788         ;;
3789         # targets that do NOT support nopl and conditional mov (cmov)
3790         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3791             cpuflags="-march=$cpu"
3792             disable i686
3793         ;;
3794         # targets that do support nopl and conditional mov (cmov)
3795         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3796         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3797             cpuflags="-march=$cpu"
3798             enable i686
3799             enable fast_cmov
3800         ;;
3801         # targets that do support conditional mov but on which it's slow
3802         pentium4|pentium4m|prescott|nocona)
3803             cpuflags="-march=$cpu"
3804             enable i686
3805             disable fast_cmov
3806         ;;
3807     esac
3808
3809 fi
3810
3811 if [ "$cpu" != generic ]; then
3812     add_cflags  $cpuflags
3813     add_asflags $cpuflags
3814 fi
3815
3816 # compiler sanity check
3817 check_exec <<EOF
3818 int main(void){ return 0; }
3819 EOF
3820 if test "$?" != 0; then
3821     echo "$cc is unable to create an executable file."
3822     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3823         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3824         echo "Only do this if you know what cross compiling means."
3825     fi
3826     die "C compiler test failed."
3827 fi
3828
3829 add_cppflags -D_ISOC99_SOURCE
3830 add_cxxflags -D__STDC_CONSTANT_MACROS
3831 check_cflags -std=c99
3832 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3833 #include <stdlib.h>
3834 EOF
3835 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3836 #include <stdlib.h>
3837 EOF
3838
3839 add_host_cppflags -D_ISOC99_SOURCE
3840 check_host_cflags -std=c99
3841 check_host_cflags -Wall
3842 check_host_cflags -O3
3843
3844 check_64bit(){
3845     arch32=$1
3846     arch64=$2
3847     expr=$3
3848     check_code cc "" "int test[2*($expr) - 1]" &&
3849         subarch=$arch64 || subarch=$arch32
3850 }
3851
3852 case "$arch" in
3853     aarch64|alpha|ia64)
3854         spic=$shared
3855     ;;
3856     mips)
3857         check_64bit mips mips64 '_MIPS_SIM > 1'
3858         spic=$shared
3859     ;;
3860     parisc)
3861         check_64bit parisc parisc64 'sizeof(void *) > 4'
3862         spic=$shared
3863     ;;
3864     ppc)
3865         check_64bit ppc ppc64 'sizeof(void *) > 4'
3866         spic=$shared
3867     ;;
3868     s390)
3869         check_64bit s390 s390x 'sizeof(void *) > 4'
3870         spic=$shared
3871     ;;
3872     sparc)
3873         check_64bit sparc sparc64 'sizeof(void *) > 4'
3874         spic=$shared
3875     ;;
3876     x86)
3877         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3878         if test "$subarch" = "x86_64"; then
3879             spic=$shared
3880         fi
3881     ;;
3882     ppc)
3883         check_cc <<EOF && subarch="ppc64"
3884         int test[(int)sizeof(char*) - 7];
3885 EOF
3886     ;;
3887 esac
3888
3889 enable $subarch
3890 enabled spic && enable_weak pic
3891
3892 # OS specific
3893 case $target_os in
3894     aix)
3895         SHFLAGS=-shared
3896         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3897         enabled shared && add_ldflags -Wl,-brtl
3898         ;;
3899     android)
3900         disable symver
3901         SLIB_INSTALL_NAME='$(SLIBNAME)'
3902         SLIB_INSTALL_LINKS=
3903         # soname not set on purpose
3904         SHFLAGS=-shared
3905         ;;
3906     haiku)
3907         prefix_default="/boot/common"
3908         network_extralibs="-lnetwork"
3909         host_libs=
3910         ;;
3911     sunos)
3912         SHFLAGS='-shared -Wl,-h,$$(@F)'
3913         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3914         network_extralibs="-lsocket -lnsl"
3915         # When using suncc to build, the Solaris linker will mark
3916         # an executable with each instruction set encountered by
3917         # the Solaris assembler.  As our libraries contain their own
3918         # guards for processor-specific code, instead suppress
3919         # generation of the HWCAPS ELF section on Solaris x86 only.
3920         enabled_all suncc x86 &&
3921             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3922             add_ldflags -Wl,-M,mapfile
3923         nm_default='nm -P -g'
3924         ;;
3925     netbsd)
3926         disable symver
3927         oss_indev_extralibs="-lossaudio"
3928         oss_outdev_extralibs="-lossaudio"
3929         enabled gcc || check_ldflags -Wl,-zmuldefs
3930         ;;
3931     openbsd|bitrig)
3932         disable symver
3933         SHFLAGS='-shared'
3934         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3935         SLIB_INSTALL_LINKS=
3936         oss_indev_extralibs="-lossaudio"
3937         oss_outdev_extralibs="-lossaudio"
3938         ;;
3939     dragonfly)
3940         disable symver
3941         ;;
3942     freebsd)
3943         ;;
3944     bsd/os)
3945         add_extralibs -lpoll -lgnugetopt
3946         strip="strip -d"
3947         ;;
3948     darwin)
3949         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3950         enabled ppc && add_asflags -force_cpusubtype_ALL
3951         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3952         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3953         strip="${strip} -x"
3954         add_ldflags -Wl,-dynamic,-search_paths_first
3955         SLIBSUF=".dylib"
3956         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3957         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3958         objformat="macho"
3959         enabled x86_64 && objformat="macho64"
3960         enabled_any pic shared ||
3961             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3962         ;;
3963     mingw32*)
3964         if test $target_os = "mingw32ce"; then
3965             disable network
3966         else
3967             target_os=mingw32
3968         fi
3969         LIBTARGET=i386
3970         if enabled x86_64; then
3971             LIBTARGET="i386:x86-64"
3972         elif enabled arm; then
3973             LIBTARGET=arm-wince
3974         fi
3975         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3976         check_ldflags -Wl,--nxcompat
3977         check_ldflags -Wl,--dynamicbase
3978         shlibdir_default="$bindir_default"
3979         SLIBPREF=""
3980         SLIBSUF=".dll"
3981         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3982         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3983         dlltool="${cross_prefix}dlltool"
3984         if check_cmd lib.exe -list; then
3985             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3986             if enabled x86_64; then
3987                 LIBTARGET=x64
3988             fi
3989         elif check_cmd $dlltool --version; then
3990             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3991         fi
3992         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3993         SLIB_INSTALL_LINKS=
3994         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3995         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3996         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3997         objformat="win32"
3998         ranlib=:
3999         enable dos_paths
4000         ;;
4001     win32|win64)
4002         disable symver
4003         if enabled shared; then
4004             # Link to the import library instead of the normal static library
4005             # for shared libs.
4006             LD_LIB='%.lib'
4007             # Cannot build both shared and static libs with MSVC or icl.
4008             disable static
4009         fi
4010         shlibdir_default="$bindir_default"
4011         SLIBPREF=""
4012         SLIBSUF=".dll"
4013         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4014         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4015         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4016         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4017         SLIB_INSTALL_LINKS=
4018         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4019         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4020         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4021         objformat="win32"
4022         ranlib=:
4023         enable dos_paths
4024         ;;
4025     cygwin*)
4026         target_os=cygwin
4027         shlibdir_default="$bindir_default"
4028         SLIBPREF="cyg"
4029         SLIBSUF=".dll"
4030         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4031         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4032         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4033         SLIB_INSTALL_LINKS=
4034         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4035         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4036         objformat="win32"
4037         enable dos_paths
4038         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4039         ;;
4040     *-dos|freedos|opendos)
4041         network_extralibs="-lsocket"
4042         objformat="coff"
4043         enable dos_paths
4044         add_cppflags -U__STRICT_ANSI__
4045         ;;
4046     linux)
4047         enable dv1394
4048         ;;
4049     irix*)
4050         target_os=irix
4051         ranlib="echo ignoring ranlib"
4052         ;;
4053     os/2*)
4054         strip="lxlite -CS"
4055         ln_s="cp -f"
4056         objformat="aout"
4057         add_cppflags -D_GNU_SOURCE
4058         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4059         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4060         LIBSUF="_s.a"
4061         SLIBPREF=""
4062         SLIBSUF=".dll"
4063         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4064         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4065         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4066             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4067             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4068             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4069             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4070             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4071         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4072             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4073         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4074         enable dos_paths
4075         enable_weak os2threads
4076         ;;
4077     gnu/kfreebsd)
4078         add_cppflags -D_BSD_SOURCE
4079         ;;
4080     gnu)
4081         ;;
4082     qnx)
4083         add_cppflags -D_QNX_SOURCE
4084         network_extralibs="-lsocket"
4085         ;;
4086     symbian)
4087         SLIBSUF=".dll"
4088         enable dos_paths
4089         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4090         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4091         add_ldflags -Wl,--target1-abs,--no-undefined \
4092                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4093                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4094         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4095                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4096                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4097         ;;
4098     osf1)
4099         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4100         ;;
4101     minix)
4102         ;;
4103     plan9)
4104         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4105                      -D_REENTRANT_SOURCE        \
4106                      -D_RESEARCH_SOURCE         \
4107                      -DFD_SETSIZE=96            \
4108                      -DHAVE_SOCK_OPTS
4109         add_compat strtod.o strtod=avpriv_strtod
4110         network_extralibs='-lbsd'
4111         exeobjs=compat/plan9/main.o
4112         disable ffserver
4113         cp_f='cp'
4114         ;;
4115     none)
4116         ;;
4117     *)
4118         die "Unknown OS '$target_os'."
4119         ;;
4120 esac
4121
4122 # determine libc flavour
4123
4124 probe_libc(){
4125     pfx=$1
4126     pfx_no_=${pfx%_}
4127     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4128     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4129         eval ${pfx}libc_type=uclibc
4130         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4131     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4132         eval ${pfx}libc_type=glibc
4133         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4134     # MinGW headers can be installed on Cygwin, so check for newlib first.
4135     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4136         eval ${pfx}libc_type=newlib
4137         add_${pfx}cppflags -U__STRICT_ANSI__
4138     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4139     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4140         eval ${pfx}libc_type=mingw64
4141         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4142             add_compat msvcrt/snprintf.o
4143             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4144         fi
4145         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4146         eval test \$${pfx_no_}cc_type = "gcc" &&
4147             add_${pfx}cppflags -D__printf__=__gnu_printf__
4148     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4149          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4150         eval ${pfx}libc_type=mingw32
4151         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4152             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4153             die "ERROR: MinGW32 runtime version must be >= 3.15."
4154         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4155         eval test \$${pfx_no_}cc_type = "gcc" &&
4156             add_${pfx}cppflags -D__printf__=__gnu_printf__
4157     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4158         eval ${pfx}libc_type=msvcrt
4159         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4160         # 0x601 by default unless something else is set by the user.
4161         # This can easily lead to us detecting functions only present
4162         # in such new versions and producing binaries requiring windows 7.0.
4163         # Therefore explicitly set the default to XP unless the user has
4164         # set something else on the command line.
4165         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4166             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4167     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4168         eval ${pfx}libc_type=klibc
4169     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4170         eval ${pfx}libc_type=bionic
4171     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4172         eval ${pfx}libc_type=solaris
4173         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4174     fi
4175 }
4176
4177 probe_libc
4178 test -n "$libc_type" && enable libc_$libc_type
4179 probe_libc host_
4180 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4181
4182 case $libc_type in
4183     bionic)
4184         add_compat strtod.o strtod=avpriv_strtod
4185         ;;
4186     msvcrt)
4187         add_compat strtod.o strtod=avpriv_strtod
4188         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4189                                      _snprintf=avpriv_snprintf  \
4190                                      vsnprintf=avpriv_vsnprintf
4191         ;;
4192 esac
4193
4194 # hacks for compiler/libc/os combinations
4195
4196 if enabled_all tms470 libc_glibc; then
4197     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4198     add_cppflags -D__USER_LABEL_PREFIX__=
4199     add_cppflags -D__builtin_memset=memset
4200     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4201     add_cflags   -pds=48    # incompatible redefinition of macro
4202 fi
4203
4204 if enabled_all ccc libc_glibc; then
4205     add_ldflags -Wl,-z,now  # calls to libots crash without this
4206 fi
4207
4208 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4209     add_cppflags '-I\$(SRC_PATH)/compat/float'
4210
4211 esc(){
4212     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4213 }
4214
4215 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4216
4217 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4218
4219 set_default $PATHS_LIST
4220 set_default nm
4221
4222 # we need to build at least one lib type
4223 if ! enabled_any static shared; then
4224     cat <<EOF
4225 At least one library type must be built.
4226 Specify --enable-static to build the static libraries or --enable-shared to
4227 build the shared libraries as well. To only build the shared libraries specify
4228 --disable-static in addition to --enable-shared.
4229 EOF
4230     exit 1;
4231 fi
4232
4233 die_license_disabled() {
4234     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4235 }
4236
4237 die_license_disabled_gpl() {
4238     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4239 }
4240
4241 die_license_disabled gpl frei0r
4242 die_license_disabled gpl libcdio
4243 die_license_disabled gpl libutvideo
4244 die_license_disabled gpl libvidstab
4245 die_license_disabled gpl libx264
4246 die_license_disabled gpl libx265
4247 die_license_disabled gpl libxavs
4248 die_license_disabled gpl libxvid
4249 die_license_disabled gpl libzvbi
4250 die_license_disabled gpl x11grab
4251
4252 die_license_disabled nonfree libaacplus
4253 die_license_disabled nonfree libfaac
4254 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4255 enabled gpl && die_license_disabled_gpl nonfree openssl
4256
4257 die_license_disabled version3 libopencore_amrnb
4258 die_license_disabled version3 libopencore_amrwb
4259 die_license_disabled version3 libvo_aacenc
4260 die_license_disabled version3 libvo_amrwbenc
4261
4262 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4263
4264 disabled optimizations || check_cflags -fomit-frame-pointer
4265
4266 enable_weak_pic() {
4267     disabled pic && return
4268     enable pic
4269     add_cppflags -DPIC
4270     case "$target_os" in
4271     mingw*|cygwin*)
4272         ;;
4273     *)
4274         add_cflags -fPIC
4275         ;;
4276     esac
4277     add_asflags  -fPIC
4278 }
4279
4280 enabled pic && enable_weak_pic
4281
4282 check_cc <<EOF || die "Symbol mangling check failed."
4283 int ff_extern;
4284 EOF
4285 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4286 extern_prefix=${sym%%ff_extern*}
4287
4288 check_cc <<EOF && enable_weak inline_asm
4289 void foo(void) { __asm__ volatile ("" ::); }
4290 EOF
4291
4292 _restrict=
4293 for restrict_keyword in restrict __restrict__ __restrict; do
4294     check_cc <<EOF && _restrict=$restrict_keyword && break
4295 void foo(char * $restrict_keyword p);
4296 EOF
4297 done
4298
4299 check_cc <<EOF && enable pragma_deprecated
4300 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4301 EOF
4302
4303 check_cc <<EOF && enable attribute_packed
4304 struct { int x; } __attribute__((packed)) x;
4305 EOF
4306
4307 check_cc <<EOF && enable attribute_may_alias
4308 union { int x; } __attribute__((may_alias)) x;
4309 EOF
4310
4311 check_cc <<EOF || die "endian test failed"
4312 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4313 EOF
4314 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4315
4316 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] ;then
4317     if ! enabled bigendian ;then
4318         enable vsx
4319     fi
4320 fi
4321
4322
4323 if enabled asm; then
4324     enabled     arm         && nogas=die
4325     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4326     as=${gas:=$as}
4327     check_as <<EOF && enable gnu_as || \
4328         $nogas "GNU assembler not found, install gas-preprocessor"
4329 .macro m n
4330 \n: .int 0
4331 .endm
4332 m x
4333 EOF
4334
4335     check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
4336 .altmacro
4337 EOF
4338
4339     check_as <<EOF && enable as_func
4340 .func test
4341 .endfunc
4342 EOF
4343 fi
4344
4345 check_inline_asm inline_asm_labels '"1:\n"'
4346
4347 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4348
4349 if enabled aarch64; then
4350     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4351     # internal assembler in clang 3.3 does not support this instruction
4352     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4353     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4354
4355     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4356
4357 elif enabled alpha; then
4358
4359     check_cflags -mieee
4360
4361 elif enabled arm; then
4362
4363     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4364 float func(float a, float b){ return a+b; }
4365 EOF
4366
4367     enabled thumb && check_cflags -mthumb || check_cflags -marm
4368
4369     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4370         enable vfp_args
4371     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4372         case "${cross_prefix:-$cc}" in
4373             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4374             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4375 __asm__ (".eabi_attribute 28, 1");
4376 int main(void) { return 0; }
4377 EOF
4378         esac
4379         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4380     fi
4381
4382     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4383     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4384     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4385     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4386     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4387     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4388
4389     [ $target_os = linux ] ||
4390         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4391             $ARCH_EXT_LIST_ARM
4392
4393     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4394
4395     check_as <<EOF && enable as_dn_directive
4396 ra .dn d0.i16
4397 .unreq ra
4398 EOF
4399
4400     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4401
4402 elif enabled mips; then
4403
4404     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4405     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4406      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4407     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4408      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4409     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4410      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4411     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4412      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4413
4414 elif enabled parisc; then
4415
4416     if enabled gcc; then
4417         case $($cc -dumpversion) in
4418             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4419         esac
4420     fi
4421
4422 elif enabled ppc; then
4423
4424     enable local_aligned_8 local_aligned_16 local_aligned_32
4425
4426     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4427     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4428     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4429     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4430
4431     # AltiVec flags: The FSF version of GCC differs from the Apple version
4432     if enabled altivec; then
4433         check_cflags -maltivec -mabi=altivec &&
4434         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4435         check_cflags -faltivec
4436
4437         # check if our compiler supports Motorola AltiVec C API
4438         check_cc <<EOF || disable altivec
4439 $inc_altivec_h
4440 int main(void) {
4441     vector signed int v1 = (vector signed int) { 0 };
4442     vector signed int v2 = (vector signed int) { 1 };
4443     v1 = vec_add(v1, v2);
4444     return 0;
4445 }
4446 EOF
4447
4448         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4449     fi
4450
4451     if enabled vsx; then
4452         check_cflags -mvsx
4453     fi
4454 elif enabled x86; then
4455
4456     check_builtin rdtsc    intrin.h   "__rdtsc()"
4457     check_builtin mm_empty mmintrin.h "_mm_empty()"
4458
4459     enable local_aligned_8 local_aligned_16 local_aligned_32
4460
4461     # check whether EBP is available on x86
4462     # As 'i' is stored on the stack, this program will crash
4463     # if the base pointer is used to access it because the
4464     # base pointer is cleared in the inline assembly code.
4465     check_exec_crash <<EOF && enable ebp_available
4466 volatile int i=0;
4467 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4468 return i;
4469 EOF
4470
4471     # check whether EBX is available on x86
4472     check_inline_asm ebx_available '""::"b"(0)' &&
4473         check_inline_asm ebx_available '"":::"%ebx"'
4474
4475     # check whether xmm clobbers are supported
4476     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4477
4478     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4479         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4480
4481     # check whether binutils is new enough to compile SSSE3/MMXEXT
4482     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4483     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4484
4485     if ! disabled_any asm mmx yasm; then
4486         if check_cmd $yasmexe --version; then
4487             enabled x86_64 && yasm_extra="-m amd64"
4488             yasm_debug="-g dwarf2"
4489         elif check_cmd nasm -v; then
4490             yasmexe=nasm
4491             yasm_debug="-g -F dwarf"
4492             if enabled x86_64; then
4493                 case "$objformat" in
4494                     elf)   objformat=elf64 ;;
4495                     win32) objformat=win64 ;;
4496                 esac
4497             fi
4498         fi
4499
4500         YASMFLAGS="-f $objformat $yasm_extra"
4501         enabled pic               && append YASMFLAGS "-DPIC"
4502         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4503         case "$objformat" in
4504             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4505         esac
4506
4507         check_yasm "movbe ecx, [5]" && enable yasm ||
4508             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4509         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4510         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4511         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4512         check_yasm "CPU amdnop" || disable cpunop
4513     fi
4514
4515     case "$cpu" in
4516         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4517             disable fast_clz
4518         ;;
4519     esac
4520
4521 fi
4522
4523 check_ldflags -Wl,--as-needed
4524
4525 if check_func dlopen; then
4526     ldl=
4527 elif check_func dlopen -ldl; then
4528     ldl=-ldl
4529 fi
4530
4531 if ! disabled network; then
4532     check_func getaddrinfo $network_extralibs
4533     check_func getservbyport $network_extralibs
4534     check_func inet_aton $network_extralibs
4535
4536     check_type netdb.h "struct addrinfo"
4537     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4538     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4539     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4540     check_type poll.h "struct pollfd"
4541     check_type netinet/sctp.h "struct sctp_event_subscribe"
4542     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4543     check_type netinet/in.h "struct sockaddr_in6"
4544     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4545     check_type "sys/types.h sys/socket.h" socklen_t
4546
4547     # Prefer arpa/inet.h over winsock2
4548     if check_header arpa/inet.h ; then
4549         check_func closesocket
4550     elif check_header winsock2.h ; then
4551         check_func_headers winsock2.h closesocket -lws2 &&
4552             network_extralibs="-lws2" ||
4553         { check_func_headers winsock2.h closesocket -lws2_32 &&
4554             network_extralibs="-lws2_32"; } || disable winsock2_h network
4555         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4556
4557         check_type ws2tcpip.h socklen_t
4558         check_type ws2tcpip.h "struct addrinfo"
4559         check_type ws2tcpip.h "struct group_source_req"
4560         check_type ws2tcpip.h "struct ip_mreq_source"
4561         check_type ws2tcpip.h "struct ipv6_mreq"
4562         check_type winsock2.h "struct pollfd"
4563         check_struct winsock2.h "struct sockaddr" sa_len
4564         check_type ws2tcpip.h "struct sockaddr_in6"
4565         check_type ws2tcpip.h "struct sockaddr_storage"
4566     else
4567         disable network
4568     fi
4569 fi
4570
4571 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4572 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4573 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4574 check_builtin sarestart signal.h "SA_RESTART"
4575 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4576
4577 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4578 check_func  ${malloc_prefix}memalign            && enable memalign
4579 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4580
4581 check_func  access
4582 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4583 check_func  fcntl
4584 check_func  fork
4585 check_func  gethrtime
4586 check_func  getopt
4587 check_func  getrusage
4588 check_func  gettimeofday
4589 check_func  isatty
4590 check_func  localtime_r
4591 check_func  mach_absolute_time
4592 check_func  mkstemp
4593 check_func  mmap
4594 check_func  mprotect
4595 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4596 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4597 check_func  sched_getaffinity
4598 check_func  setrlimit
4599 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4600 check_func  strerror_r
4601 check_func  sysconf
4602 check_func  sysctl
4603 check_func  usleep
4604
4605 check_func_headers conio.h kbhit
4606 check_func_headers io.h setmode
4607 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4608 check_func_headers stdlib.h getenv
4609
4610 check_func_headers windows.h CoTaskMemFree -lole32
4611 check_func_headers windows.h GetProcessAffinityMask
4612 check_func_headers windows.h GetProcessTimes
4613 check_func_headers windows.h GetSystemTimeAsFileTime
4614 check_func_headers windows.h MapViewOfFile
4615 check_func_headers windows.h PeekNamedPipe
4616 check_func_headers windows.h SetConsoleTextAttribute
4617 check_func_headers windows.h Sleep
4618 check_func_headers windows.h VirtualAlloc
4619 check_func_headers glob.h glob
4620 enabled xlib &&
4621     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4622
4623 check_header cl/cl.h
4624 check_header direct.h
4625 check_header dlfcn.h
4626 check_header dxva.h
4627 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4628 check_header io.h
4629 check_header libcrystalhd/libcrystalhd_if.h
4630 check_header mach/mach_time.h
4631 check_header malloc.h
4632 check_header poll.h
4633 check_header sys/mman.h
4634 check_header sys/param.h
4635 check_header sys/resource.h
4636 check_header sys/select.h
4637 check_header sys/time.h
4638 check_header sys/un.h
4639 check_header termios.h
4640 check_header unistd.h
4641 check_header vdpau/vdpau.h
4642 check_header vdpau/vdpau_x11.h
4643 check_header VideoDecodeAcceleration/VDADecoder.h
4644 check_header windows.h
4645 check_header X11/extensions/XvMClib.h
4646 check_header asm/types.h
4647
4648 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4649 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4650 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4651
4652 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4653
4654 if ! disabled w32threads && ! enabled pthreads; then
4655     check_func_headers "windows.h process.h" _beginthreadex &&
4656         enable w32threads || disable w32threads
4657 fi
4658
4659 # check for some common methods of building with pthread support
4660 # do this before the optional library checks as some of them require pthreads
4661 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4662     enable pthreads
4663     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4664         add_cflags -pthread
4665         add_extralibs -pthread
4666     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4667         add_cflags -pthreads
4668         add_extralibs -pthreads
4669     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4670         add_cflags -ldl -pthread
4671         add_extralibs -ldl -pthread
4672     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4673         add_extralibs -lpthreadGC2
4674     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4675         :
4676     elif ! check_func pthread_join && ! check_func pthread_create; then
4677         disable pthreads
4678     fi
4679     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4680 fi
4681
4682
4683 if enabled pthreads; then
4684   check_func pthread_cancel
4685 fi
4686
4687 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4688 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4689
4690 check_lib math.h sin -lm && LIBM="-lm"
4691 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4692
4693 atan2f_args=2
4694 ldexpf_args=2
4695 powf_args=2
4696 fminf_args=2
4697
4698 for func in $MATH_FUNCS; do
4699     eval check_mathfunc $func \${${func}_args:-1}
4700 done
4701
4702 # these are off by default, so fail if requested and not available
4703 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4704 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4705                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4706                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4707 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4708 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4709 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4710 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4711 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4712 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4713 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4714 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4715 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4716 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4717                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4718                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4719 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4720 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4721 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4722 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"
4723 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4724 enabled fontconfig        && enable libfontconfig
4725 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4726 enabled libfreetype       && require_libfreetype
4727 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4728 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4729                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4730                                done || die "ERROR: libgsm not found"; }
4731 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4732 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4733 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4734 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4735 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4736 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4737 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4738 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4739                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4740                                die "ERROR: libopenjpeg not found"; }
4741 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4742 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4743 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4744 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4745 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4746 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4747 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4748 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4749 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4750 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4751     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4752     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4753 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4754 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4755                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4756                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4757 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4758 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4759 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4760 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4761 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4762 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4763 enabled libvpx            && {
4764     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4765                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4766     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 ||
4767                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4768     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4769     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; } }
4770 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4771 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4772 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4773                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4774                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4775 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4776                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4777                                die "ERROR: libx265 version must be >= 17."; }
4778 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4779 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4780 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4781 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4782 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4783                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4784                                die "ERROR: openal not found"; } &&
4785                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4786                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4787 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4788                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4789                                die "ERROR: opencl not found"; } &&
4790                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4791                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4792                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4793 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4794                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4795                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4796                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4797                                die "ERROR: opengl not found."
4798                              }
4799 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4800                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4801                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4802                                die "ERROR: openssl not found"; }
4803 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4804
4805 if enabled gnutls; then
4806     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4807     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4808 fi
4809
4810 # libdc1394 check
4811 if enabled libdc1394; then
4812     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4813         enable libdc1394_2; } ||
4814     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4815         enable libdc1394_1; } ||
4816