avcodec/zmbv: Check len before reading in decode_frame()
[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-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
110   --enable-raise-major     increase major version numbers in sonames [no]
111
112 Program options:
113   --disable-programs       do not build command line programs
114   --disable-ffmpeg         disable ffmpeg build
115   --disable-ffplay         disable ffplay build
116   --disable-ffprobe        disable ffprobe build
117   --disable-ffserver       disable ffserver build
118
119 Documentation options:
120   --disable-doc            do not build documentation
121   --disable-htmlpages      do not build HTML documentation pages
122   --disable-manpages       do not build man documentation pages
123   --disable-podpages       do not build POD documentation pages
124   --disable-txtpages       do not build text documentation pages
125
126 Component options:
127   --disable-avdevice       disable libavdevice build
128   --disable-avcodec        disable libavcodec build
129   --disable-avformat       disable libavformat build
130   --disable-avutil         disable libavutil build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [auto]
137   --disable-w32threads     disable Win32 threads [auto]
138   --disable-os2threads     disable OS/2 threads [auto]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148
149 Hardware accelerators:
150   --disable-dxva2          disable DXVA2 code [autodetect]
151   --disable-vaapi          disable VAAPI code [autodetect]
152   --disable-vda            disable VDA code [autodetect]
153   --disable-vdpau          disable VDPAU code [autodetect]
154
155 Individual component options:
156   --disable-everything     disable all components listed below
157   --disable-encoder=NAME   disable encoder NAME
158   --enable-encoder=NAME    enable encoder NAME
159   --disable-encoders       disable all encoders
160   --disable-decoder=NAME   disable decoder NAME
161   --enable-decoder=NAME    enable decoder NAME
162   --disable-decoders       disable all decoders
163   --disable-hwaccel=NAME   disable hwaccel NAME
164   --enable-hwaccel=NAME    enable hwaccel NAME
165   --disable-hwaccels       disable all hwaccels
166   --disable-muxer=NAME     disable muxer NAME
167   --enable-muxer=NAME      enable muxer NAME
168   --disable-muxers         disable all muxers
169   --disable-demuxer=NAME   disable demuxer NAME
170   --enable-demuxer=NAME    enable demuxer NAME
171   --disable-demuxers       disable all demuxers
172   --enable-parser=NAME     enable parser NAME
173   --disable-parser=NAME    disable parser NAME
174   --disable-parsers        disable all parsers
175   --enable-bsf=NAME        enable bitstream filter NAME
176   --disable-bsf=NAME       disable bitstream filter NAME
177   --disable-bsfs           disable all bitstream filters
178   --enable-protocol=NAME   enable protocol NAME
179   --disable-protocol=NAME  disable protocol NAME
180   --disable-protocols      disable all protocols
181   --enable-indev=NAME      enable input device NAME
182   --disable-indev=NAME     disable input device NAME
183   --disable-indevs         disable input devices
184   --enable-outdev=NAME     enable output device NAME
185   --disable-outdev=NAME    disable output device NAME
186   --disable-outdevs        disable output devices
187   --disable-devices        disable all devices
188   --enable-filter=NAME     enable filter NAME
189   --disable-filter=NAME    disable filter NAME
190   --disable-filters        disable all filters
191
192 External library support:
193   --enable-avisynth        enable reading of AviSynth script files [no]
194   --disable-bzlib          disable bzlib [autodetect]
195   --enable-fontconfig      enable fontconfig
196   --enable-frei0r          enable frei0r video filtering
197   --enable-gnutls          enable gnutls [no]
198   --disable-iconv          disable iconv [autodetect]
199   --enable-ladspa          enable LADSPA audio filtering
200   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
201   --enable-libass          enable libass subtitles rendering [no]
202   --enable-libbluray       enable BluRay reading using libbluray [no]
203   --enable-libcaca         enable textual display using libcaca
204   --enable-libcelt         enable CELT decoding via libcelt [no]
205   --enable-libcdio         enable audio CD grabbing with libcdio
206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
207                            and libraw1394 [no]
208   --enable-libfaac         enable AAC encoding via libfaac [no]
209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
211   --enable-libfreetype     enable libfreetype [no]
212   --enable-libgme          enable Game Music Emu via libgme [no]
213   --enable-libgsm          enable GSM de/encoding via libgsm [no]
214   --enable-libiec61883     enable iec61883 via libiec61883 [no]
215   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
216   --enable-libmodplug      enable ModPlug via libmodplug [no]
217   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
218   --enable-libnut          enable NUT (de)muxing via libnut,
219                            native (de)muxer exists [no]
220   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
221   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
222   --enable-libopencv       enable video filtering via libopencv [no]
223   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
224   --enable-libopus         enable Opus decoding via libopus [no]
225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
226   --enable-libquvi         enable quvi input via libquvi [no]
227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
230   --enable-libsoxr         enable Include libsoxr resampling [no]
231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
232   --enable-libssh          enable SFTP protocol via libssh [no]
233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
234   --enable-libtheora       enable Theora encoding via libtheora [no]
235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
238   --enable-libvidstab      enable video stabilization using vid.stab [no]
239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
242                            native implementation exists [no]
243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
245   --enable-libwebp         enable WebP encoding via libwebp [no]
246   --enable-libx264         enable H.264 encoding via x264 [no]
247   --enable-libx265         enable HEVC encoding via x265 [no]
248   --enable-libxavs         enable AVS encoding via xavs [no]
249   --enable-libxvid         enable Xvid encoding via xvidcore,
250                            native MPEG-4/Xvid encoder exists [no]
251   --enable-libzmq          enable message passing via libzmq [no]
252   --enable-libzvbi         enable teletext support via libzvbi [no]
253   --enable-decklink        enable Blackmagick DeckLink output [no]
254   --enable-openal          enable OpenAL 1.1 capture support [no]
255   --enable-opencl          enable OpenCL code
256   --enable-opengl          enable OpenGL rendering [no]
257   --enable-openssl         enable openssl [no]
258   --enable-x11grab         enable X11 grabbing [no]
259   --disable-zlib           disable zlib [autodetect]
260
261 Advanced options (experts only):
262   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
263   --enable-cross-compile   assume a cross-compiler is used
264   --sysroot=PATH           root of cross-build tree
265   --sysinclude=PATH        location of cross-build system headers
266   --target-os=OS           compiler targets OS [$target_os]
267   --target-exec=CMD        command to run executables on target
268   --target-path=DIR        path to view of build directory on target
269   --target-samples=DIR     path to samples directory on target
270   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
271   --toolchain=NAME         set tool defaults according to NAME
272   --nm=NM                  use nm tool NM [$nm_default]
273   --ar=AR                  use archive tool AR [$ar_default]
274   --as=AS                  use assembler AS [$as_default]
275   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
276   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
277   --cc=CC                  use C compiler CC [$cc_default]
278   --cxx=CXX                use C compiler CXX [$cxx_default]
279   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
280   --ld=LD                  use linker LD [$ld_default]
281   --host-cc=HOSTCC         use host C compiler HOSTCC
282   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
283   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
284   --host-ld=HOSTLD         use host linker HOSTLD
285   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
286   --host-libs=HLIBS        use libs HLIBS when linking for host
287   --host-os=OS             compiler host OS [$target_os]
288   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
289   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
290   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
291   --extra-libs=ELIBS       add ELIBS [$ELIBS]
292   --extra-version=STRING   version string suffix []
293   --optflags=OPTFLAGS      override optimization-related compiler flags
294   --build-suffix=SUFFIX    library name suffix []
295   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
296   --progs-suffix=SUFFIX    program name suffix []
297   --arch=ARCH              select architecture [$arch]
298   --cpu=CPU                select the minimum required CPU (affects
299                            instruction selection, may crash on older CPUs)
300   --enable-pic             build position-independent code
301   --enable-sram            allow use of on-chip SRAM
302   --enable-thumb           compile for Thumb instruction set
303   --disable-symver         disable symbol versioning
304   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
305   --disable-safe-bitstream-reader
306                            disable buffer boundary checking in bitreaders
307                            (faster, but may crash)
308   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
309   --enable-lto             use link-time optimization
310
311 Optimization options (experts only):
312   --disable-asm            disable all assembler optimizations
313   --disable-altivec        disable AltiVec optimizations
314   --disable-amd3dnow       disable 3DNow! optimizations
315   --disable-amd3dnowext    disable 3DNow! extended optimizations
316   --disable-mmx            disable MMX optimizations
317   --disable-mmxext         disable MMXEXT optimizations
318   --disable-sse            disable SSE optimizations
319   --disable-sse2           disable SSE2 optimizations
320   --disable-sse3           disable SSE3 optimizations
321   --disable-ssse3          disable SSSE3 optimizations
322   --disable-sse4           disable SSE4 optimizations
323   --disable-sse42          disable SSE4.2 optimizations
324   --disable-avx            disable AVX optimizations
325   --disable-xop            disable XOP optimizations
326   --disable-fma3           disable FMA3 optimizations
327   --disable-fma4           disable FMA4 optimizations
328   --disable-avx2           disable AVX2 optimizations
329   --disable-armv5te        disable armv5te optimizations
330   --disable-armv6          disable armv6 optimizations
331   --disable-armv6t2        disable armv6t2 optimizations
332   --disable-vfp            disable VFP optimizations
333   --disable-neon           disable NEON optimizations
334   --disable-vis            disable VIS optimizations
335   --disable-inline-asm     disable use of inline assembler
336   --disable-yasm           disable use of yasm assembler
337   --disable-mips32r2       disable MIPS32R2 optimizations
338   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
339   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
340   --disable-mipsfpu        disable floating point MIPS optimizations
341   --disable-fast-unaligned consider unaligned accesses slow
342
343 Developer options (useful when working on FFmpeg itself):
344   --disable-debug          disable debugging symbols
345   --enable-debug=LEVEL     set the debug level [$debuglevel]
346   --disable-optimizations  disable compiler optimizations
347   --enable-extra-warnings  enable more compiler warnings
348   --disable-stripping      disable stripping of executables and shared libraries
349   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
350                            2 causes a slowdown at runtime.
351   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
352   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
353                            leaks and errors, using the specified valgrind binary.
354                            Cannot be combined with --target-exec
355   --enable-ftrapv          Trap arithmetic overflows
356   --samples=PATH           location of test samples for FATE, if not set use
357                            \$FATE_SAMPLES at make invocation time.
358   --enable-neon-clobber-test check NEON registers for clobbering (should be
359                            used only for debugging purposes)
360   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
361                            should be used only for debugging purposes)
362   --enable-random          randomly enable/disable components
363   --disable-random
364   --enable-random=LIST     randomly enable/disable specific components or
365   --disable-random=LIST    component groups. LIST is a comma-separated list
366                            of NAME[:PROB] entries where NAME is a component
367                            (group) and PROB the probability associated with
368                            NAME (default 0.5).
369   --random-seed=VALUE      seed value for --enable/disable-random
370
371 NOTE: Object files are built at the place where configure is launched.
372 EOF
373   exit 0
374 }
375
376 quotes='""'
377
378 log(){
379     echo "$@" >> $logfile
380 }
381
382 log_file(){
383     log BEGIN $1
384     pr -n -t $1 >> $logfile
385     log END $1
386 }
387
388 echolog(){
389     log "$@"
390     echo "$@"
391 }
392
393 warn(){
394     log "WARNING: $*"
395     WARNINGS="${WARNINGS}WARNING: $*\n"
396 }
397
398 die(){
399     echolog "$@"
400     cat <<EOF
401
402 If you think configure made a mistake, make sure you are using the latest
403 version from Git.  If the latest version fails, report the problem to the
404 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
405 EOF
406     if disabled logging; then
407         cat <<EOF
408 Rerun configure with logging enabled (do not use --disable-logging), and
409 include the log this produces with your report.
410 EOF
411     else
412         cat <<EOF
413 Include the log file "$logfile" produced by configure as this will help
414 solving the problem.
415 EOF
416     fi
417     exit 1
418 }
419
420 # Avoid locale weirdness, besides we really just want to translate ASCII.
421 toupper(){
422     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
423 }
424
425 tolower(){
426     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
427 }
428
429 c_escape(){
430     echo "$*" | sed 's/["\\]/\\\0/g'
431 }
432
433 sh_quote(){
434     v=$(echo "$1" | sed "s/'/'\\\\''/g")
435     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
436     echo "$v"
437 }
438
439 cleanws(){
440     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
441 }
442
443 filter(){
444     pat=$1
445     shift
446     for v; do
447         eval "case $v in $pat) echo $v ;; esac"
448     done
449 }
450
451 filter_out(){
452     pat=$1
453     shift
454     for v; do
455         eval "case $v in $pat) ;; *) echo $v ;; esac"
456     done
457 }
458
459 map(){
460     m=$1
461     shift
462     for v; do eval $m; done
463 }
464
465 add_suffix(){
466     suffix=$1
467     shift
468     for v; do echo ${v}${suffix}; done
469 }
470
471 set_all(){
472     value=$1
473     shift
474     for var in $*; do
475         eval $var=$value
476     done
477 }
478
479 set_weak(){
480     value=$1
481     shift
482     for var; do
483         eval : \${$var:=$value}
484     done
485 }
486
487 sanitize_var_name(){
488     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
489 }
490
491 set_safe(){
492     var=$1
493     shift
494     eval $(sanitize_var_name "$var")='$*'
495 }
496
497 get_safe(){
498     eval echo \$$(sanitize_var_name "$1")
499 }
500
501 pushvar(){
502     for pvar in $*; do
503         eval level=\${${pvar}_level:=0}
504         eval ${pvar}_${level}="\$$pvar"
505         eval ${pvar}_level=$(($level+1))
506     done
507 }
508
509 popvar(){
510     for pvar in $*; do
511         eval level=\${${pvar}_level:-0}
512         test $level = 0 && continue
513         eval level=$(($level-1))
514         eval $pvar="\${${pvar}_${level}}"
515         eval ${pvar}_level=$level
516         eval unset ${pvar}_${level}
517     done
518 }
519
520 enable(){
521     set_all yes $*
522 }
523
524 disable(){
525     set_all no $*
526 }
527
528 enable_weak(){
529     set_weak yes $*
530 }
531
532 disable_weak(){
533     set_weak no $*
534 }
535
536 enable_safe(){
537     for var; do
538         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
539     done
540 }
541
542 disable_safe(){
543     for var; do
544         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
545     done
546 }
547
548 do_enable_deep(){
549     for var; do
550         enabled $var && continue
551         eval sel="\$${var}_select"
552         eval sgs="\$${var}_suggest"
553         pushvar var sgs
554         enable_deep $sel
555         popvar sgs
556         enable_deep_weak $sgs
557         popvar var
558     done
559 }
560
561 enable_deep(){
562     do_enable_deep $*
563     enable $*
564 }
565
566 enable_deep_weak(){
567     for var; do
568         disabled $var && continue
569         pushvar var
570         do_enable_deep $var
571         popvar var
572         enable_weak $var
573     done
574 }
575
576 enabled(){
577     test "${1#!}" = "$1" && op== || op=!=
578     eval test "x\$${1#!}" $op "xyes"
579 }
580
581 disabled(){
582     test "${1#!}" = "$1" && op== || op=!=
583     eval test "x\$${1#!}" $op "xno"
584 }
585
586 enabled_all(){
587     for opt; do
588         enabled $opt || return 1
589     done
590 }
591
592 disabled_all(){
593     for opt; do
594         disabled $opt || return 1
595     done
596 }
597
598 enabled_any(){
599     for opt; do
600         enabled $opt && return 0
601     done
602 }
603
604 disabled_any(){
605     for opt; do
606         disabled $opt && return 0
607     done
608     return 1
609 }
610
611 set_default(){
612     for opt; do
613         eval : \${$opt:=\$${opt}_default}
614     done
615 }
616
617 is_in(){
618     value=$1
619     shift
620     for var in $*; do
621         [ $var = $value ] && return 0
622     done
623     return 1
624 }
625
626 do_check_deps(){
627     for cfg; do
628         cfg="${cfg#!}"
629         enabled ${cfg}_checking && die "Circular dependency for $cfg."
630         disabled ${cfg}_checking && continue
631         enable ${cfg}_checking
632         append allopts $cfg
633
634         eval dep_all="\$${cfg}_deps"
635         eval dep_any="\$${cfg}_deps_any"
636         eval dep_sel="\$${cfg}_select"
637         eval dep_sgs="\$${cfg}_suggest"
638         eval dep_ifa="\$${cfg}_if"
639         eval dep_ifn="\$${cfg}_if_any"
640
641         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
642         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
643         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
644
645         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
646         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
647         enabled_all  $dep_all || disable $cfg
648         enabled_any  $dep_any || disable $cfg
649         disabled_any $dep_sel && disable $cfg
650
651         if enabled $cfg; then
652             enable_deep $dep_sel
653             enable_deep_weak $dep_sgs
654         fi
655
656         disable ${cfg}_checking
657     done
658 }
659
660 check_deps(){
661     unset allopts
662
663     do_check_deps "$@"
664
665     for cfg in $allopts; do
666         enabled $cfg || continue
667         eval dep_extralibs="\$${cfg}_extralibs"
668         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
669     done
670 }
671
672 print_config(){
673     pfx=$1
674     files=$2
675     shift 2
676     map 'eval echo "$v \${$v:-no}"' "$@" |
677     awk "BEGIN { split(\"$files\", files) }
678         {
679             c = \"$pfx\" toupper(\$1);
680             v = \$2;
681             sub(/yes/, 1, v);
682             sub(/no/,  0, v);
683             for (f in files) {
684                 file = files[f];
685                 if (file ~ /\\.h\$/) {
686                     printf(\"#define %s %d\\n\", c, v) >>file;
687                 } else if (file ~ /\\.asm\$/) {
688                     printf(\"%%define %s %d\\n\", c, v) >>file;
689                 } else if (file ~ /\\.mak\$/) {
690                     n = -v ? \"\" : \"!\";
691                     printf(\"%s%s=yes\\n\", n, c) >>file;
692                 } else if (file ~ /\\.texi\$/) {
693                     pre = -v ? \"\" : \"@c \";
694                     yesno = \$2;
695                     c2 = tolower(c);
696                     gsub(/_/, \"-\", c2);
697                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
698                 }
699             }
700         }"
701 }
702
703 print_enabled(){
704     suf=$1
705     shift
706     for v; do
707         enabled $v && printf "%s\n" ${v%$suf};
708     done
709 }
710
711 append(){
712     var=$1
713     shift
714     eval "$var=\"\$$var $*\""
715 }
716
717 prepend(){
718     var=$1
719     shift
720     eval "$var=\"$* \$$var\""
721 }
722
723 add_cppflags(){
724     append CPPFLAGS "$@"
725 }
726
727 add_cflags(){
728     append CFLAGS $($cflags_filter "$@")
729 }
730
731 add_cxxflags(){
732     append CXXFLAGS $($cflags_filter "$@")
733 }
734
735 add_asflags(){
736     append ASFLAGS $($asflags_filter "$@")
737 }
738
739 add_ldflags(){
740     append LDFLAGS $($ldflags_filter "$@")
741 }
742
743 add_stripflags(){
744     append ASMSTRIPFLAGS "$@"
745 }
746
747 add_extralibs(){
748     prepend extralibs $($ldflags_filter "$@")
749 }
750
751 add_host_cppflags(){
752     append host_cppflags "$@"
753 }
754
755 add_host_cflags(){
756     append host_cflags $($host_cflags_filter "$@")
757 }
758
759 add_host_ldflags(){
760     append host_ldflags $($host_ldflags_filter "$@")
761 }
762
763 add_compat(){
764     append compat_objs $1
765     shift
766     map 'add_cppflags -D$v' "$@"
767 }
768
769 check_cmd(){
770     log "$@"
771     "$@" >> $logfile 2>&1
772 }
773
774 cc_o(){
775     eval printf '%s\\n' $CC_O
776 }
777
778 cc_e(){
779     eval printf '%s\\n' $CC_E
780 }
781
782 check_cc(){
783     log check_cc "$@"
784     cat > $TMPC
785     log_file $TMPC
786     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
787 }
788
789 check_cxx(){
790     log check_cxx "$@"
791     cat > $TMPCPP
792     log_file $TMPCPP
793     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
794 }
795
796 check_cpp(){
797     log check_cpp "$@"
798     cat > $TMPC
799     log_file $TMPC
800     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
801 }
802
803 as_o(){
804     eval printf '%s\\n' $AS_O
805 }
806
807 check_as(){
808     log check_as "$@"
809     cat > $TMPS
810     log_file $TMPS
811     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
812 }
813
814 check_inline_asm(){
815     log check_inline_asm "$@"
816     name="$1"
817     code="$2"
818     shift 2
819     disable $name
820     check_cc "$@" <<EOF && enable $name
821 void foo(void){ __asm__ volatile($code); }
822 EOF
823 }
824
825 check_insn(){
826     log check_insn "$@"
827     check_inline_asm ${1}_inline "\"$2\""
828     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
829 }
830
831 check_yasm(){
832     log check_yasm "$@"
833     echo "$1" > $TMPS
834     log_file $TMPS
835     shift 1
836     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
837 }
838
839 ld_o(){
840     eval printf '%s\\n' $LD_O
841 }
842
843 check_ld(){
844     log check_ld "$@"
845     type=$1
846     shift 1
847     flags=$(filter_out '-l*|*.so' $@)
848     libs=$(filter '-l*|*.so' $@)
849     check_$type $($cflags_filter $flags) || return
850     flags=$($ldflags_filter $flags)
851     libs=$($ldflags_filter $libs)
852     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
853 }
854
855 print_include(){
856     hdr=$1
857     test "${hdr%.h}" = "${hdr}" &&
858         echo "#include $hdr"    ||
859         echo "#include <$hdr>"
860 }
861
862 check_code(){
863     log check_code "$@"
864     check=$1
865     headers=$2
866     code=$3
867     shift 3
868     {
869         for hdr in $headers; do
870             print_include $hdr
871         done
872         echo "int main(void) { $code; return 0; }"
873     } | check_$check "$@"
874 }
875
876 check_cppflags(){
877     log check_cppflags "$@"
878     check_cc "$@" <<EOF && append CPPFLAGS "$@"
879 int x;
880 EOF
881 }
882
883 test_cflags(){
884     log test_cflags "$@"
885     set -- $($cflags_filter "$@")
886     check_cc "$@" <<EOF
887 int x;
888 EOF
889 }
890
891 check_cflags(){
892     log check_cflags "$@"
893     test_cflags "$@" && add_cflags "$@"
894 }
895
896 check_cxxflags(){
897     log check_cxxflags "$@"
898     set -- $($cflags_filter "$@")
899     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
900 int x;
901 EOF
902 }
903
904 test_ldflags(){
905     log test_ldflags "$@"
906     check_ld "cc" "$@" <<EOF
907 int main(void){ return 0; }
908 EOF
909 }
910
911 check_ldflags(){
912     log check_ldflags "$@"
913     test_ldflags "$@" && add_ldflags "$@"
914 }
915
916 test_stripflags(){
917     log test_stripflags "$@"
918     # call check_cc to get a fresh TMPO
919     check_cc <<EOF
920 int main(void) { return 0; }
921 EOF
922     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
923 }
924
925 check_stripflags(){
926     log check_stripflags "$@"
927     test_stripflags "$@" && add_stripflags "$@"
928 }
929
930 check_header(){
931     log check_header "$@"
932     header=$1
933     shift
934     disable_safe $header
935     check_cpp "$@" <<EOF && enable_safe $header
936 #include <$header>
937 int x;
938 EOF
939 }
940
941 check_func(){
942     log check_func "$@"
943     func=$1
944     shift
945     disable $func
946     check_ld "cc" "$@" <<EOF && enable $func
947 extern int $func();
948 int main(void){ $func(); }
949 EOF
950 }
951
952 check_mathfunc(){
953     log check_mathfunc "$@"
954     func=$1
955     narg=$2
956     shift 2
957     test $narg = 2 && args="f, g" || args="f"
958     disable $func
959     check_ld "cc" "$@" <<EOF && enable $func
960 #include <math.h>
961 float foo(float f, float g) { return $func($args); }
962 int main(void){ return (int) foo; }
963 EOF
964 }
965
966 check_func_headers(){
967     log check_func_headers "$@"
968     headers=$1
969     funcs=$2
970     shift 2
971     {
972         for hdr in $headers; do
973             print_include $hdr
974         done
975         for func in $funcs; do
976             echo "long check_$func(void) { return (long) $func; }"
977         done
978         echo "int main(void) { return 0; }"
979     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
980 }
981
982 check_class_headers_cpp(){
983     log check_class_headers_cpp "$@"
984     headers=$1
985     classes=$2
986     shift 2
987     {
988         for hdr in $headers; do
989             echo "#include <$hdr>"
990         done
991         echo "int main(void) { "
992         i=1
993         for class in $classes; do
994             echo "$class obj$i;"
995             i=$(expr $i + 1)
996         done
997         echo "return 0; }"
998     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
999 }
1000
1001 check_cpp_condition(){
1002     log check_cpp_condition "$@"
1003     header=$1
1004     condition=$2
1005     shift 2
1006     check_cpp "$@" <<EOF
1007 #include <$header>
1008 #if !($condition)
1009 #error "unsatisfied condition: $condition"
1010 #endif
1011 EOF
1012 }
1013
1014 check_lib(){
1015     log check_lib "$@"
1016     header="$1"
1017     func="$2"
1018     shift 2
1019     check_header $header && check_func $func "$@" && add_extralibs "$@"
1020 }
1021
1022 check_lib2(){
1023     log check_lib2 "$@"
1024     headers="$1"
1025     funcs="$2"
1026     shift 2
1027     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1028 }
1029
1030 check_lib_cpp(){
1031     log check_lib_cpp "$@"
1032     headers="$1"
1033     classes="$2"
1034     shift 2
1035     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1036 }
1037
1038 check_pkg_config(){
1039     log check_pkg_config "$@"
1040     pkgandversion="$1"
1041     pkg="${1%% *}"
1042     headers="$2"
1043     funcs="$3"
1044     shift 3
1045     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1046     pkg_cflags=$($pkg_config --cflags $pkg)
1047     pkg_libs=$($pkg_config --libs $pkg)
1048     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1049         set_safe ${pkg}_cflags $pkg_cflags   &&
1050         set_safe ${pkg}_libs   $pkg_libs
1051 }
1052
1053 check_exec(){
1054     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1055 }
1056
1057 check_exec_crash(){
1058     code=$(cat)
1059
1060     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1061     # are safe but may not be available everywhere.  Thus we use
1062     # raise(SIGTERM) instead.  The check is run in a subshell so we
1063     # can redirect the "Terminated" message from the shell.  SIGBUS
1064     # is not defined by standard C so it is used conditionally.
1065
1066     (check_exec "$@") >> $logfile 2>&1 <<EOF
1067 #include <signal.h>
1068 static void sighandler(int sig){
1069     raise(SIGTERM);
1070 }
1071 int foo(void){
1072     $code
1073 }
1074 int (*func_ptr)(void) = foo;
1075 int main(void){
1076     signal(SIGILL, sighandler);
1077     signal(SIGFPE, sighandler);
1078     signal(SIGSEGV, sighandler);
1079 #ifdef SIGBUS
1080     signal(SIGBUS, sighandler);
1081 #endif
1082     return func_ptr();
1083 }
1084 EOF
1085 }
1086
1087 check_type(){
1088     log check_type "$@"
1089     headers=$1
1090     type=$2
1091     shift 2
1092     disable_safe "$type"
1093     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1094 }
1095
1096 check_struct(){
1097     log check_struct "$@"
1098     headers=$1
1099     struct=$2
1100     member=$3
1101     shift 3
1102     disable_safe "${struct}_${member}"
1103     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1104         enable_safe "${struct}_${member}"
1105 }
1106
1107 check_builtin(){
1108     log check_builtin "$@"
1109     name=$1
1110     headers=$2
1111     builtin=$3
1112     shift 3
1113     disable "$name"
1114     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1115 }
1116
1117 require(){
1118     name="$1"
1119     header="$2"
1120     func="$3"
1121     shift 3
1122     check_lib $header $func "$@" || die "ERROR: $name not found"
1123 }
1124
1125 require2(){
1126     name="$1"
1127     headers="$2"
1128     func="$3"
1129     shift 3
1130     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1131 }
1132
1133 require_cpp(){
1134     name="$1"
1135     headers="$2"
1136     classes="$3"
1137     shift 3
1138     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1139 }
1140
1141 require_pkg_config(){
1142     pkg="$1"
1143     check_pkg_config "$@" || die "ERROR: $pkg not found"
1144     add_cflags    $(get_safe ${pkg}_cflags)
1145     add_extralibs $(get_safe ${pkg}_libs)
1146 }
1147
1148 require_libfreetype(){
1149     log require_libfreetype "$@"
1150     pkg="freetype2"
1151     check_cmd $pkg_config --exists --print-errors $pkg \
1152       || die "ERROR: $pkg not found"
1153     pkg_cflags=$($pkg_config --cflags $pkg)
1154     pkg_libs=$($pkg_config --libs $pkg)
1155     {
1156         echo "#include <ft2build.h>"
1157         echo "#include FT_FREETYPE_H"
1158         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1159         echo "int main(void) { return 0; }"
1160     } | check_ld "cc" $pkg_cflags $pkg_libs \
1161       && set_safe ${pkg}_cflags $pkg_cflags \
1162       && set_safe ${pkg}_libs   $pkg_libs \
1163       || die "ERROR: $pkg not found"
1164     add_cflags    $(get_safe ${pkg}_cflags)
1165     add_extralibs $(get_safe ${pkg}_libs)
1166 }
1167
1168 hostcc_e(){
1169     eval printf '%s\\n' $HOSTCC_E
1170 }
1171
1172 hostcc_o(){
1173     eval printf '%s\\n' $HOSTCC_O
1174 }
1175
1176 check_host_cc(){
1177     log check_host_cc "$@"
1178     cat > $TMPC
1179     log_file $TMPC
1180     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1181 }
1182
1183 check_host_cpp(){
1184     log check_host_cpp "$@"
1185     cat > $TMPC
1186     log_file $TMPC
1187     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1188 }
1189
1190 check_host_cppflags(){
1191     log check_host_cppflags "$@"
1192     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1193 int x;
1194 EOF
1195 }
1196
1197 check_host_cflags(){
1198     log check_host_cflags "$@"
1199     set -- $($host_cflags_filter "$@")
1200     check_host_cc "$@" <<EOF && append host_cflags "$@"
1201 int x;
1202 EOF
1203 }
1204
1205 check_host_cpp_condition(){
1206     log check_host_cpp_condition "$@"
1207     header=$1
1208     condition=$2
1209     shift 2
1210     check_host_cpp "$@" <<EOF
1211 #include <$header>
1212 #if !($condition)
1213 #error "unsatisfied condition: $condition"
1214 #endif
1215 EOF
1216 }
1217
1218 apply(){
1219     file=$1
1220     shift
1221     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1222 }
1223
1224 cp_if_changed(){
1225     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1226     mkdir -p "$(dirname $2)"
1227     $cp_f "$1" "$2"
1228 }
1229
1230 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1231 # system-dependent things.
1232
1233 COMPONENT_LIST="
1234     bsfs
1235     decoders
1236     demuxers
1237     encoders
1238     filters
1239     hwaccels
1240     indevs
1241     muxers
1242     outdevs
1243     parsers
1244     protocols
1245 "
1246
1247 EXAMPLE_LIST="
1248     avio_reading_example
1249     avcodec_example
1250     demuxing_decoding_example
1251     filter_audio_example
1252     filtering_audio_example
1253     filtering_video_example
1254     metadata_example
1255     muxing_example
1256     remuxing_example
1257     resampling_audio_example
1258     scaling_video_example
1259     transcode_aac_example
1260 "
1261
1262 EXTERNAL_LIBRARY_LIST="
1263     avisynth
1264     bzlib
1265     crystalhd
1266     decklink
1267     fontconfig
1268     frei0r
1269     gnutls
1270     iconv
1271     ladspa
1272     libaacplus
1273     libass
1274     libbluray
1275     libcaca
1276     libcdio
1277     libcelt
1278     libdc1394
1279     libfaac
1280     libfdk_aac
1281     libflite
1282     libfreetype
1283     libgme
1284     libgsm
1285     libiec61883
1286     libilbc
1287     libmodplug
1288     libmp3lame
1289     libnut
1290     libopencore_amrnb
1291     libopencore_amrwb
1292     libopencv
1293     libopenjpeg
1294     libopus
1295     libpulse
1296     libquvi
1297     librtmp
1298     libschroedinger
1299     libshine
1300     libsoxr
1301     libspeex
1302     libssh
1303     libstagefright_h264
1304     libtheora
1305     libtwolame
1306     libutvideo
1307     libv4l2
1308     libvidstab
1309     libvo_aacenc
1310     libvo_amrwbenc
1311     libvorbis
1312     libvpx
1313     libwavpack
1314     libwebp
1315     libx264
1316     libx265
1317     libxavs
1318     libxvid
1319     libzmq
1320     libzvbi
1321     openal
1322     opencl
1323     opengl
1324     openssl
1325     x11grab
1326     zlib
1327 "
1328
1329 DOCUMENT_LIST="
1330     doc
1331     htmlpages
1332     manpages
1333     podpages
1334     txtpages
1335 "
1336
1337 HWACCEL_LIST="
1338     dxva2
1339     vaapi
1340     vda
1341     vdpau
1342     xvmc
1343 "
1344
1345 LIBRARY_LIST="
1346     avcodec
1347     avdevice
1348     avfilter
1349     avformat
1350     avresample
1351     avutil
1352     postproc
1353     swresample
1354     swscale
1355 "
1356
1357 PROGRAM_LIST="
1358     ffplay
1359     ffprobe
1360     ffserver
1361     ffmpeg
1362 "
1363
1364 CONFIG_LIST="
1365     $COMPONENT_LIST
1366     $DOCUMENT_LIST
1367     $EXAMPLE_LIST
1368     $EXTERNAL_LIBRARY_LIST
1369     $HWACCEL_LIST
1370     $LIBRARY_LIST
1371     $PROGRAM_LIST
1372     dct
1373     dwt
1374     error_resilience
1375     fast_unaligned
1376     fft
1377     ftrapv
1378     gpl
1379     gray
1380     hardcoded_tables
1381     incompatible_libav_abi
1382     incompatible_fork_abi
1383     lsp
1384     lzo
1385     mdct
1386     memalign_hack
1387     memory_poisoning
1388     neon_clobber_test
1389     network
1390     nonfree
1391     pic
1392     raise_major
1393     rdft
1394     runtime_cpudetect
1395     safe_bitstream_reader
1396     shared
1397     small
1398     sram
1399     static
1400     swscale_alpha
1401     thumb
1402     version3
1403     xmm_clobber_test
1404 "
1405
1406 THREADS_LIST='
1407     pthreads
1408     w32threads
1409     os2threads
1410 '
1411
1412 ATOMICS_LIST='
1413     atomics_gcc
1414     atomics_suncc
1415     atomics_win32
1416 '
1417
1418 ARCH_LIST='
1419     aarch64
1420     alpha
1421     arm
1422     avr32
1423     avr32_ap
1424     avr32_uc
1425     bfin
1426     ia64
1427     m68k
1428     mips
1429     mips64
1430     parisc
1431     ppc
1432     ppc64
1433     s390
1434     sh4
1435     sparc
1436     sparc64
1437     tilegx
1438     tilepro
1439     tomi
1440     x86
1441     x86_32
1442     x86_64
1443 '
1444
1445 ARCH_EXT_LIST_ARM='
1446     armv5te
1447     armv6
1448     armv6t2
1449     neon
1450     vfp
1451     vfpv3
1452 '
1453
1454 ARCH_EXT_LIST_X86='
1455     amd3dnow
1456     amd3dnowext
1457     avx
1458     avx2
1459     cpunop
1460     fma3
1461     fma4
1462     i686
1463     mmx
1464     mmxext
1465     sse
1466     sse2
1467     sse3
1468     sse4
1469     sse42
1470     ssse3
1471     xop
1472 '
1473
1474 ARCH_EXT_LIST="
1475     $ARCH_EXT_LIST_ARM
1476     $ARCH_EXT_LIST_X86
1477     altivec
1478     ppc4xx
1479     vis
1480     mipsfpu
1481     mips32r2
1482     mipsdspr1
1483     mipsdspr2
1484 "
1485
1486 HAVE_LIST_CMDLINE='
1487     inline_asm
1488     symver
1489     yasm
1490 '
1491
1492 HAVE_LIST_PUB='
1493     bigendian
1494     fast_unaligned
1495     incompatible_libav_abi
1496     incompatible_fork_abi
1497 '
1498
1499 MATH_FUNCS="
1500     atanf
1501     atan2f
1502     cbrt
1503     cbrtf
1504     cosf
1505     exp2
1506     exp2f
1507     expf
1508     isinf
1509     isnan
1510     ldexpf
1511     llrint
1512     llrintf
1513     log2
1514     log2f
1515     log10f
1516     lrint
1517     lrintf
1518     powf
1519     rint
1520     round
1521     roundf
1522     sinf
1523     trunc
1524     truncf
1525 "
1526
1527 HAVE_LIST="
1528     $ARCH_EXT_LIST
1529     $(add_suffix _external $ARCH_EXT_LIST)
1530     $(add_suffix _inline   $ARCH_EXT_LIST)
1531     $HAVE_LIST_CMDLINE
1532     $HAVE_LIST_PUB
1533     $THREADS_LIST
1534     $ATOMICS_LIST
1535     $MATH_FUNCS
1536     access
1537     aligned_malloc
1538     aligned_stack
1539     alsa_asoundlib_h
1540     altivec_h
1541     arpa_inet_h
1542     as_object_arch
1543     asm_mod_q
1544     asm_types_h
1545     atomic_cas_ptr
1546     atomics_native
1547     attribute_may_alias
1548     attribute_packed
1549     cdio_paranoia_h
1550     cdio_paranoia_paranoia_h
1551     CL_cl_h
1552     clock_gettime
1553     closesocket
1554     CommandLineToArgvW
1555     CryptGenRandom
1556     dcbzl
1557     dev_bktr_ioctl_bt848_h
1558     dev_bktr_ioctl_meteor_h
1559     dev_ic_bt8xx_h
1560     dev_video_bktr_ioctl_bt848_h
1561     dev_video_meteor_ioctl_meteor_h
1562     direct_h
1563     dlfcn_h
1564     dlopen
1565     dos_paths
1566     dxva_h
1567     ebp_available
1568     ebx_available
1569     ES2_gl_h
1570     fast_64bit
1571     fast_clz
1572     fast_cmov
1573     fcntl
1574     fork
1575     getaddrinfo
1576     gethrtime
1577     getopt
1578     GetProcessAffinityMask
1579     GetProcessMemoryInfo
1580     GetProcessTimes
1581     GetSystemTimeAsFileTime
1582     getrusage
1583     getservbyport
1584     gettimeofday
1585     glob
1586     glXGetProcAddress
1587     gnu_as
1588     gnu_windres
1589     gsm_h
1590     ibm_asm
1591     inet_aton
1592     io_h
1593     inline_asm_labels
1594     isatty
1595     jack_port_get_latency_range
1596     kbhit
1597     ldbrx
1598     libc_msvcrt
1599     libdc1394_1
1600     libdc1394_2
1601     local_aligned_16
1602     local_aligned_8
1603     localtime_r
1604     loongson
1605     lzo1x_999_compress
1606     machine_ioctl_bt848_h
1607     machine_ioctl_meteor_h
1608     machine_rw_barrier
1609     makeinfo
1610     malloc_h
1611     MapViewOfFile
1612     memalign
1613     MemoryBarrier
1614     mkstemp
1615     mm_empty
1616     mmap
1617     mprotect
1618     nanosleep
1619     openjpeg_1_5_openjpeg_h
1620     OpenGL_gl3_h
1621     PeekNamedPipe
1622     perl
1623     pod2man
1624     poll_h
1625     posix_memalign
1626     pragma_deprecated
1627     pthread_cancel
1628     rdtsc
1629     rsync_contimeout
1630     sarestart
1631     sched_getaffinity
1632     sdl
1633     SetConsoleTextAttribute
1634     setmode
1635     setrlimit
1636     Sleep
1637     sndio_h
1638     socklen_t
1639     soundcard_h
1640     strerror_r
1641     struct_addrinfo
1642     struct_group_source_req
1643     struct_ip_mreq_source
1644     struct_ipv6_mreq
1645     struct_pollfd
1646     struct_rusage_ru_maxrss
1647     struct_sctp_event_subscribe
1648     struct_sockaddr_in6
1649     struct_sockaddr_sa_len
1650     struct_sockaddr_storage
1651     struct_stat_st_mtim_tv_nsec
1652     struct_v4l2_frmivalenum_discrete
1653     symver_asm_label
1654     symver_gnu_asm
1655     sync_val_compare_and_swap
1656     sysconf
1657     sysctl
1658     sys_mman_h
1659     sys_param_h
1660     sys_resource_h
1661     sys_select_h
1662     sys_soundcard_h
1663     sys_time_h
1664     sys_un_h
1665     sys_videoio_h
1666     termios_h
1667     texi2html
1668     threads
1669     unistd_h
1670     usleep
1671     vdpau_x11
1672     vfp_args
1673     VirtualAlloc
1674     wglGetProcAddress
1675     windows_h
1676     winsock2_h
1677     xform_asm
1678     xlib
1679     xmm_clobbers
1680 "
1681
1682 # options emitted with CONFIG_ prefix but not available on the command line
1683 CONFIG_EXTRA="
1684     aandcttables
1685     ac3dsp
1686     audio_frame_queue
1687     dsputil
1688     exif
1689     frame_thread_encoder
1690     gcrypt
1691     golomb
1692     gplv3
1693     h263dsp
1694     h264chroma
1695     h264dsp
1696     h264pred
1697     h264qpel
1698     hpeldsp
1699     huffman
1700     intrax8
1701     lgplv3
1702     llviddsp
1703     lpc
1704     mpegaudio
1705     mpegaudiodsp
1706     mpegvideo
1707     mpegvideoenc
1708     nettle
1709     rangecoder
1710     riffdec
1711     riffenc
1712     rtpdec
1713     rtpenc_chain
1714     sinewin
1715     videodsp
1716     vp3dsp
1717 "
1718
1719 CMDLINE_SELECT="
1720     $ARCH_EXT_LIST
1721     $CONFIG_LIST
1722     $HAVE_LIST_CMDLINE
1723     $THREADS_LIST
1724     asm
1725     cross_compile
1726     debug
1727     extra_warnings
1728     logging
1729     lto
1730     optimizations
1731     rpath
1732     stripping
1733 "
1734
1735 PATHS_LIST='
1736     bindir
1737     datadir
1738     docdir
1739     incdir
1740     libdir
1741     mandir
1742     prefix
1743     shlibdir
1744 '
1745
1746 CMDLINE_SET="
1747     $PATHS_LIST
1748     ar
1749     arch
1750     as
1751     assert_level
1752     build_suffix
1753     cc
1754     cpu
1755     cross_prefix
1756     cxx
1757     dep_cc
1758     extra_version
1759     host_cc
1760     host_cflags
1761     host_ld
1762     host_ldflags
1763     host_libs
1764     host_os
1765     install
1766     ld
1767     logfile
1768     malloc_prefix
1769     nm
1770     optflags
1771     pkg_config
1772     progs_suffix
1773     random_seed
1774     samples
1775     strip
1776     sysinclude
1777     sysroot
1778     target_exec
1779     target_os
1780     target_path
1781     target_samples
1782     tempprefix
1783     toolchain
1784     valgrind
1785     yasmexe
1786 "
1787
1788 CMDLINE_APPEND="
1789     extra_cflags
1790     extra_cxxflags
1791     host_cppflags
1792 "
1793
1794 # code dependency declarations
1795
1796 # architecture extensions
1797
1798 armv5te_deps="arm"
1799 armv6_deps="arm"
1800 armv6t2_deps="arm"
1801 neon_deps_any="aarch64 arm"
1802 vfp_deps_any="aarch64 arm"
1803 vfpv3_deps="vfp"
1804
1805 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1806
1807 mipsfpu_deps="mips"
1808 mips32r2_deps="mips"
1809 mipsdspr1_deps="mips"
1810 mipsdspr2_deps="mips"
1811
1812 altivec_deps="ppc"
1813 ppc4xx_deps="ppc"
1814
1815 vis_deps="sparc"
1816
1817 cpunop_deps="i686"
1818 x86_64_select="i686"
1819 x86_64_suggest="fast_cmov"
1820
1821 amd3dnow_deps="mmx"
1822 amd3dnowext_deps="amd3dnow"
1823 i686_deps="x86"
1824 mmx_deps="x86"
1825 mmxext_deps="mmx"
1826 sse_deps="mmxext"
1827 sse2_deps="sse"
1828 sse3_deps="sse2"
1829 ssse3_deps="sse3"
1830 sse4_deps="ssse3"
1831 sse42_deps="sse4"
1832 avx_deps="sse42"
1833 xop_deps="avx"
1834 fma3_deps="avx"
1835 fma4_deps="avx"
1836 avx2_deps="avx"
1837
1838 mmx_external_deps="yasm"
1839 mmx_inline_deps="inline_asm"
1840 mmx_suggest="mmx_external mmx_inline"
1841
1842 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1843     eval dep=\$${ext}_deps
1844     eval ${ext}_external_deps='"${dep}_external"'
1845     eval ${ext}_inline_deps='"${dep}_inline"'
1846     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1847 done
1848
1849 aligned_stack_if_any="aarch64 ppc x86"
1850 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1851 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1852 fast_unaligned_if_any="aarch64 ppc x86"
1853
1854 need_memalign="altivec neon sse"
1855
1856 # system capabilities
1857 log2_deps="!libc_msvcrt"
1858
1859 symver_if_any="symver_asm_label symver_gnu_asm"
1860
1861 # threading support
1862 atomics_gcc_if="sync_val_compare_and_swap"
1863 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1864 atomics_win32_if="MemoryBarrier"
1865 atomics_native_if_any="$ATOMICS_LIST"
1866 w32threads_deps="atomics_native"
1867 threads_if_any="$THREADS_LIST"
1868
1869 # subsystems
1870 dct_select="rdft"
1871 error_resilience_select="dsputil"
1872 frame_thread_encoder_deps="encoders threads"
1873 lpc_select="dsputil"
1874 mdct_select="fft"
1875 rdft_select="fft"
1876 mpegaudio_select="mpegaudiodsp"
1877 mpegaudiodsp_select="dct"
1878 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1879 mpegvideoenc_select="mpegvideo"
1880
1881 # decoders / encoders
1882 aac_decoder_select="mdct sinewin"
1883 aac_encoder_select="audio_frame_queue mdct sinewin"
1884 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1885 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1886 ac3_encoder_select="mdct ac3dsp dsputil"
1887 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1888 aic_decoder_select="dsputil golomb"
1889 alac_encoder_select="lpc"
1890 als_decoder_select="dsputil"
1891 amrnb_decoder_select="lsp"
1892 amrwb_decoder_select="lsp"
1893 amv_decoder_select="dsputil hpeldsp exif"
1894 amv_encoder_select="aandcttables"
1895 ape_decoder_select="dsputil"
1896 asv1_decoder_select="dsputil"
1897 asv1_encoder_select="dsputil"
1898 asv2_decoder_select="dsputil"
1899 asv2_encoder_select="dsputil"
1900 atrac1_decoder_select="mdct sinewin"
1901 atrac3_decoder_select="mdct"
1902 atrac3p_decoder_select="mdct sinewin"
1903 avrn_decoder_select="exif"
1904 bink_decoder_select="dsputil hpeldsp"
1905 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1906 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1907 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1908 cllc_decoder_select="dsputil"
1909 comfortnoise_encoder_select="lpc"
1910 cook_decoder_select="dsputil mdct sinewin"
1911 cscd_decoder_select="lzo"
1912 cscd_decoder_suggest="zlib"
1913 dca_decoder_select="mdct"
1914 dirac_decoder_select="dsputil dwt golomb videodsp"
1915 dnxhd_decoder_select="dsputil"
1916 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1917 dvvideo_decoder_select="dsputil"
1918 dvvideo_encoder_select="dsputil"
1919 dxa_decoder_select="zlib"
1920 eac3_decoder_select="ac3_decoder"
1921 eac3_encoder_select="ac3_encoder"
1922 eamad_decoder_select="aandcttables dsputil mpegvideo"
1923 eatgq_decoder_select="aandcttables"
1924 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1925 exr_decoder_select="zlib"
1926 ffv1_decoder_select="dsputil golomb rangecoder"
1927 ffv1_encoder_select="dsputil rangecoder"
1928 ffvhuff_decoder_select="dsputil llviddsp"
1929 ffvhuff_encoder_select="dsputil huffman llviddsp"
1930 fic_decoder_select="dsputil golomb"
1931 flac_decoder_select="golomb"
1932 flac_encoder_select="dsputil golomb lpc"
1933 flashsv_decoder_select="zlib"
1934 flashsv_encoder_select="zlib"
1935 flashsv2_encoder_select="zlib"
1936 flashsv2_decoder_select="zlib"
1937 flv_decoder_select="h263_decoder"
1938 flv_encoder_select="h263_encoder"
1939 fourxm_decoder_select="dsputil"
1940 fraps_decoder_select="dsputil huffman"
1941 g2m_decoder_select="dsputil zlib"
1942 g729_decoder_select="dsputil"
1943 h261_decoder_select="error_resilience mpegvideo"
1944 h261_encoder_select="aandcttables mpegvideoenc"
1945 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1946 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1947 h263i_decoder_select="h263_decoder"
1948 h263p_encoder_select="h263_encoder"
1949 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1950 h264_decoder_suggest="error_resilience"
1951 hevc_decoder_select="dsputil golomb videodsp"
1952 huffyuv_decoder_select="dsputil llviddsp"
1953 huffyuv_encoder_select="dsputil huffman llviddsp"
1954 iac_decoder_select="dsputil fft mdct sinewin"
1955 imc_decoder_select="dsputil fft mdct sinewin"
1956 indeo3_decoder_select="hpeldsp"
1957 interplay_video_decoder_select="hpeldsp"
1958 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1959 jpegls_encoder_select="golomb"
1960 jv_decoder_select="dsputil"
1961 lagarith_decoder_select="dsputil"
1962 ljpeg_encoder_select="aandcttables mpegvideoenc"
1963 loco_decoder_select="golomb"
1964 mdec_decoder_select="dsputil error_resilience mpegvideo"
1965 metasound_decoder_select="lsp mdct sinewin"
1966 mimic_decoder_select="dsputil hpeldsp"
1967 mjpeg_decoder_select="dsputil hpeldsp exif"
1968 mjpegb_decoder_select="dsputil hpeldsp exif"
1969 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1970 mlp_decoder_select="dsputil mlp_parser"
1971 motionpixels_decoder_select="dsputil"
1972 mp1_decoder_select="mpegaudio"
1973 mp1float_decoder_select="mpegaudio"
1974 mp2_decoder_select="mpegaudio"
1975 mp2float_decoder_select="mpegaudio"
1976 mp3_decoder_select="mpegaudio"
1977 mp3adu_decoder_select="mpegaudio"
1978 mp3adufloat_decoder_select="mpegaudio"
1979 mp3float_decoder_select="mpegaudio"
1980 mp3on4_decoder_select="mpegaudio"
1981 mp3on4float_decoder_select="mpegaudio"
1982 mpc7_decoder_select="dsputil mpegaudiodsp"
1983 mpc8_decoder_select="dsputil mpegaudiodsp"
1984 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1985 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1986 mpeg1video_decoder_select="error_resilience mpegvideo"
1987 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
1988 mpeg2video_decoder_select="error_resilience mpegvideo"
1989 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
1990 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1991 mpeg4_encoder_select="h263_encoder"
1992 msmpeg4v1_decoder_select="h263_decoder"
1993 msmpeg4v2_decoder_select="h263_decoder"
1994 msmpeg4v2_encoder_select="h263_encoder"
1995 msmpeg4v3_decoder_select="h263_decoder"
1996 msmpeg4v3_encoder_select="h263_encoder"
1997 mss2_decoder_select="error_resilience vc1_decoder"
1998 mxpeg_decoder_select="dsputil hpeldsp exif"
1999 nellymoser_decoder_select="mdct sinewin"
2000 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2001 nuv_decoder_select="dsputil lzo"
2002 png_decoder_select="zlib"
2003 png_encoder_select="dsputil zlib"
2004 prores_decoder_select="dsputil"
2005 prores_encoder_select="dsputil"
2006 qcelp_decoder_select="lsp"
2007 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2008 ra_144_encoder_select="audio_frame_queue lpc"
2009 ralf_decoder_select="golomb"
2010 rtjpeg_decoder_select="dsputil"
2011 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2012 rv10_encoder_select="h263_encoder"
2013 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2014 rv20_encoder_select="h263_encoder"
2015 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2016 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2017 shorten_decoder_select="golomb"
2018 sipr_decoder_select="lsp"
2019 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2020 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2021 sonic_decoder_select="golomb rangecoder"
2022 sonic_encoder_select="golomb rangecoder"
2023 sonic_ls_encoder_select="golomb"
2024 sp5x_decoder_select="dsputil hpeldsp exif"
2025 svq1_decoder_select="hpeldsp"
2026 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2027 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
2028 svq3_decoder_suggest="error_resilience zlib"
2029 tak_decoder_select="dsputil"
2030 theora_decoder_select="vp3_decoder"
2031 tiff_decoder_suggest="zlib"
2032 tiff_encoder_suggest="zlib"
2033 thp_decoder_select="dsputil hpeldsp exif"
2034 truehd_decoder_select="mlp_parser"
2035 truemotion2_decoder_select="dsputil"
2036 truespeech_decoder_select="dsputil"
2037 tscc_decoder_select="zlib"
2038 twinvq_decoder_select="mdct lsp sinewin"
2039 utvideo_decoder_select="dsputil"
2040 utvideo_encoder_select="dsputil huffman"
2041 vble_decoder_select="dsputil"
2042 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2043 vc1image_decoder_select="vc1_decoder"
2044 vorbis_decoder_select="mdct"
2045 vorbis_encoder_select="mdct"
2046 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2047 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2048 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2049 vp6a_decoder_select="vp6_decoder"
2050 vp6f_decoder_select="vp6_decoder"
2051 vp8_decoder_select="h264pred videodsp"
2052 vp9_decoder_select="videodsp"
2053 webp_decoder_select="vp8_decoder"
2054 wmapro_decoder_select="mdct sinewin"
2055 wmav1_decoder_select="mdct sinewin"
2056 wmav1_encoder_select="mdct sinewin"
2057 wmav2_decoder_select="mdct sinewin"
2058 wmav2_encoder_select="mdct sinewin"
2059 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2060 wmv1_decoder_select="h263_decoder"
2061 wmv1_encoder_select="h263_encoder"
2062 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2063 wmv2_encoder_select="h263_encoder"
2064 wmv3_decoder_select="vc1_decoder"
2065 wmv3image_decoder_select="wmv3_decoder"
2066 zerocodec_decoder_select="zlib"
2067 zlib_decoder_select="zlib"
2068 zlib_encoder_select="zlib"
2069 zmbv_decoder_select="zlib"
2070 zmbv_encoder_select="zlib"
2071
2072 # hardware accelerators
2073 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2074 dxva2_deps="dxva2api_h"
2075 vaapi_deps="va_va_h"
2076 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2077 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2078 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2079 xvmc_deps="X11_extensions_XvMClib_h"
2080
2081 h263_vaapi_hwaccel_deps="vaapi"
2082 h263_vaapi_hwaccel_select="h263_decoder"
2083 h263_vdpau_hwaccel_deps="vdpau"
2084 h263_vdpau_hwaccel_select="h263_decoder"
2085 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2086 h264_dxva2_hwaccel_deps="dxva2"
2087 h264_dxva2_hwaccel_select="h264_decoder"
2088 h264_vaapi_hwaccel_deps="vaapi"
2089 h264_vaapi_hwaccel_select="h264_decoder"
2090 h264_vda_decoder_deps="vda"
2091 h264_vda_decoder_select="h264_decoder"
2092 h264_vda_hwaccel_deps="vda"
2093 h264_vda_hwaccel_select="h264_decoder"
2094 h264_vdpau_decoder_deps="vdpau"
2095 h264_vdpau_decoder_select="h264_decoder"
2096 h264_vdpau_hwaccel_deps="vdpau"
2097 h264_vdpau_hwaccel_select="h264_decoder"
2098 mpeg_vdpau_decoder_deps="vdpau"
2099 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2100 mpeg_xvmc_hwaccel_deps="xvmc"
2101 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2102 mpeg1_vdpau_decoder_deps="vdpau"
2103 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2104 mpeg1_vdpau_hwaccel_deps="vdpau"
2105 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2106 mpeg1_xvmc_hwaccel_deps="xvmc"
2107 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2108 mpeg2_crystalhd_decoder_select="crystalhd"
2109 mpeg2_dxva2_hwaccel_deps="dxva2"
2110 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2111 mpeg2_vaapi_hwaccel_deps="vaapi"
2112 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2113 mpeg2_vdpau_hwaccel_deps="vdpau"
2114 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2115 mpeg2_xvmc_hwaccel_deps="xvmc"
2116 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2117 mpeg4_crystalhd_decoder_select="crystalhd"
2118 mpeg4_vaapi_hwaccel_deps="vaapi"
2119 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2120 mpeg4_vdpau_decoder_deps="vdpau"
2121 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2122 mpeg4_vdpau_hwaccel_deps="vdpau"
2123 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2124 msmpeg4_crystalhd_decoder_select="crystalhd"
2125 vc1_crystalhd_decoder_select="crystalhd"
2126 vc1_dxva2_hwaccel_deps="dxva2"
2127 vc1_dxva2_hwaccel_select="vc1_decoder"
2128 vc1_vaapi_hwaccel_deps="vaapi"
2129 vc1_vaapi_hwaccel_select="vc1_decoder"
2130 vc1_vdpau_decoder_deps="vdpau"
2131 vc1_vdpau_decoder_select="vc1_decoder"
2132 vc1_vdpau_hwaccel_deps="vdpau"
2133 vc1_vdpau_hwaccel_select="vc1_decoder"
2134 wmv3_crystalhd_decoder_select="crystalhd"
2135 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2136 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2137 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2138 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2139
2140 # parsers
2141 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2142 hevc_parser_select="hevc_decoder"
2143 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2144 mpegvideo_parser_select="error_resilience mpegvideo"
2145 vc1_parser_select="mpegvideo"
2146
2147 # external libraries
2148 libaacplus_encoder_deps="libaacplus"
2149 libcelt_decoder_deps="libcelt"
2150 libfaac_encoder_deps="libfaac"
2151 libfaac_encoder_select="audio_frame_queue"
2152 libfdk_aac_decoder_deps="libfdk_aac"
2153 libfdk_aac_encoder_deps="libfdk_aac"
2154 libfdk_aac_encoder_select="audio_frame_queue"
2155 libgme_demuxer_deps="libgme"
2156 libgsm_decoder_deps="libgsm"
2157 libgsm_encoder_deps="libgsm"
2158 libgsm_ms_decoder_deps="libgsm"
2159 libgsm_ms_encoder_deps="libgsm"
2160 libilbc_decoder_deps="libilbc"
2161 libilbc_encoder_deps="libilbc"
2162 libmodplug_demuxer_deps="libmodplug"
2163 libmp3lame_encoder_deps="libmp3lame"
2164 libmp3lame_encoder_select="audio_frame_queue"
2165 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2166 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2167 libopencore_amrnb_encoder_select="audio_frame_queue"
2168 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2169 libopenjpeg_decoder_deps="libopenjpeg"
2170 libopenjpeg_encoder_deps="libopenjpeg"
2171 libopus_decoder_deps="libopus"
2172 libopus_encoder_deps="libopus"
2173 libopus_encoder_select="audio_frame_queue"
2174 libquvi_demuxer_deps="libquvi"
2175 libschroedinger_decoder_deps="libschroedinger"
2176 libschroedinger_encoder_deps="libschroedinger"
2177 libshine_encoder_deps="libshine"
2178 libshine_encoder_select="audio_frame_queue"
2179 libspeex_decoder_deps="libspeex"
2180 libspeex_encoder_deps="libspeex"
2181 libspeex_encoder_select="audio_frame_queue"
2182 libstagefright_h264_decoder_deps="libstagefright_h264"
2183 libtheora_encoder_deps="libtheora"
2184 libtwolame_encoder_deps="libtwolame"
2185 libvo_aacenc_encoder_deps="libvo_aacenc"
2186 libvo_aacenc_encoder_select="audio_frame_queue"
2187 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2188 libvorbis_decoder_deps="libvorbis"
2189 libvorbis_encoder_deps="libvorbis"
2190 libvorbis_encoder_select="audio_frame_queue"
2191 libvpx_vp8_decoder_deps="libvpx"
2192 libvpx_vp8_encoder_deps="libvpx"
2193 libvpx_vp9_decoder_deps="libvpx"
2194 libvpx_vp9_encoder_deps="libvpx"
2195 libwavpack_encoder_deps="libwavpack"
2196 libwebp_encoder_deps="libwebp"
2197 libx264_encoder_deps="libx264"
2198 libx264rgb_encoder_deps="libx264"
2199 libx265_encoder_deps="libx265"
2200 libxavs_encoder_deps="libxavs"
2201 libxvid_encoder_deps="libxvid"
2202 libutvideo_decoder_deps="libutvideo"
2203 libutvideo_encoder_deps="libutvideo"
2204 libzvbi_teletext_decoder_deps="libzvbi"
2205
2206 # demuxers / muxers
2207 ac3_demuxer_select="ac3_parser"
2208 asf_demuxer_select="riffdec"
2209 asf_muxer_select="riffenc"
2210 asf_stream_muxer_select="asf_muxer"
2211 avi_demuxer_select="riffdec"
2212 avi_muxer_select="riffenc"
2213 avisynth_demuxer_deps="avisynth"
2214 avisynth_demuxer_select="riffdec"
2215 caf_demuxer_select="riffdec"
2216 dirac_demuxer_select="dirac_parser"
2217 dts_demuxer_select="dca_parser"
2218 dtshd_demuxer_select="dca_parser"
2219 dxa_demuxer_select="riffdec"
2220 eac3_demuxer_select="ac3_parser"
2221 f4v_muxer_select="mov_muxer"
2222 flac_demuxer_select="flac_parser"
2223 hds_muxer_select="flv_muxer"
2224 hls_muxer_select="mpegts_muxer"
2225 ipod_muxer_select="mov_muxer"
2226 ismv_muxer_select="mov_muxer"
2227 libnut_demuxer_deps="libnut"
2228 libnut_muxer_deps="libnut"
2229 matroska_audio_muxer_select="matroska_muxer"
2230 matroska_demuxer_select="riffdec"
2231 matroska_demuxer_suggest="bzlib lzo zlib"
2232 matroska_muxer_select="riffenc"
2233 mmf_muxer_select="riffenc"
2234 mov_demuxer_select="riffdec"
2235 mov_demuxer_suggest="zlib"
2236 mov_muxer_select="riffenc rtpenc_chain"
2237 mp3_demuxer_select="mpegaudio_parser"
2238 mp4_muxer_select="mov_muxer"
2239 mpegts_muxer_select="adts_muxer latm_muxer"
2240 mpegtsraw_demuxer_select="mpegts_demuxer"
2241 mxf_d10_muxer_select="mxf_muxer"
2242 nut_muxer_select="riffenc"
2243 nuv_demuxer_select="riffdec"
2244 ogg_demuxer_select="golomb"
2245 psp_muxer_select="mov_muxer"
2246 rtp_demuxer_select="sdp_demuxer"
2247 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2248 rtsp_demuxer_select="http_protocol rtpdec"
2249 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2250 sap_demuxer_select="sdp_demuxer"
2251 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2252 sdp_demuxer_select="rtpdec"
2253 smoothstreaming_muxer_select="ismv_muxer"
2254 spdif_muxer_select="aac_parser"
2255 tak_demuxer_select="tak_parser"
2256 tg2_muxer_select="mov_muxer"
2257 tgp_muxer_select="mov_muxer"
2258 vobsub_demuxer_select="mpegps_demuxer"
2259 w64_demuxer_select="wav_demuxer"
2260 w64_muxer_select="wav_muxer"
2261 wav_demuxer_select="riffdec"
2262 wav_muxer_select="riffenc"
2263 webm_muxer_select="riffenc"
2264 wtv_demuxer_select="riffdec"
2265 wtv_muxer_select="riffenc"
2266 xmv_demuxer_select="riffdec"
2267 xwma_demuxer_select="riffdec"
2268
2269 # indevs / outdevs
2270 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2271 alsa_outdev_deps="alsa_asoundlib_h"
2272 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2273 caca_outdev_deps="libcaca"
2274 decklink_outdev_deps="decklink pthreads"
2275 decklink_outdev_extralibs="-lstdc++"
2276 dshow_indev_deps="IBaseFilter"
2277 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2278 dv1394_indev_deps="dv1394"
2279 dv1394_indev_select="dv_demuxer"
2280 fbdev_indev_deps="linux_fb_h"
2281 fbdev_outdev_deps="linux_fb_h"
2282 iec61883_indev_deps="libiec61883"
2283 jack_indev_deps="jack_jack_h sem_timedwait"
2284 lavfi_indev_deps="avfilter"
2285 libcdio_indev_deps="libcdio"
2286 libdc1394_indev_deps="libdc1394"
2287 libv4l2_indev_deps="libv4l2"
2288 openal_indev_deps="openal"
2289 opengl_outdev_deps="opengl"
2290 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2291 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2292 pulse_indev_deps="libpulse"
2293 pulse_outdev_deps="libpulse"
2294 sdl_outdev_deps="sdl"
2295 sndio_indev_deps="sndio_h"
2296 sndio_outdev_deps="sndio_h"
2297 v4l_indev_deps="linux_videodev_h"
2298 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2299 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2300 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2301 vfwcap_indev_extralibs="-lavicap32"
2302 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2303 xv_outdev_extralibs="-lXv -lX11 -lXext"
2304 x11grab_indev_deps="x11grab"
2305
2306 # protocols
2307 bluray_protocol_deps="libbluray"
2308 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2309 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2310 ffrtmpcrypt_protocol_select="tcp_protocol"
2311 ffrtmphttp_protocol_deps="!librtmp_protocol"
2312 ffrtmphttp_protocol_select="http_protocol"
2313 ftp_protocol_select="tcp_protocol"
2314 gopher_protocol_select="network"
2315 httpproxy_protocol_select="tcp_protocol"
2316 http_protocol_select="tcp_protocol"
2317 https_protocol_select="tls_protocol"
2318 librtmp_protocol_deps="librtmp"
2319 librtmpe_protocol_deps="librtmp"
2320 librtmps_protocol_deps="librtmp"
2321 librtmpt_protocol_deps="librtmp"
2322 librtmpte_protocol_deps="librtmp"
2323 libssh_protocol_deps="libssh"
2324 mmsh_protocol_select="http_protocol"
2325 mmst_protocol_select="network"
2326 rtmp_protocol_deps="!librtmp_protocol"
2327 rtmp_protocol_select="tcp_protocol"
2328 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2329 rtmps_protocol_deps="!librtmp_protocol"
2330 rtmps_protocol_select="tls_protocol"
2331 rtmpt_protocol_select="ffrtmphttp_protocol"
2332 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2333 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2334 rtp_protocol_select="udp_protocol"
2335 sctp_protocol_deps="struct_sctp_event_subscribe"
2336 sctp_protocol_select="network"
2337 srtp_protocol_select="rtp_protocol"
2338 tcp_protocol_select="network"
2339 tls_protocol_deps_any="openssl gnutls"
2340 tls_protocol_select="tcp_protocol"
2341 udp_protocol_select="network"
2342 unix_protocol_deps="sys_un_h"
2343 unix_protocol_select="network"
2344
2345 # filters
2346 aconvert_filter_deps="swresample"
2347 amovie_filter_deps="avcodec avformat"
2348 aresample_filter_deps="swresample"
2349 ass_filter_deps="libass"
2350 asyncts_filter_deps="avresample"
2351 atempo_filter_deps="avcodec"
2352 atempo_filter_select="rdft"
2353 azmq_filter_deps="libzmq"
2354 blackframe_filter_deps="gpl"
2355 boxblur_filter_deps="gpl"
2356 colormatrix_filter_deps="gpl"
2357 cropdetect_filter_deps="gpl"
2358 dctdnoiz_filter_deps="avcodec"
2359 dctdnoiz_filter_select="dct"
2360 delogo_filter_deps="gpl"
2361 deshake_filter_deps="avcodec"
2362 deshake_filter_select="dsputil"
2363 drawtext_filter_deps="libfreetype"
2364 ebur128_filter_deps="gpl"
2365 flite_filter_deps="libflite"
2366 frei0r_filter_deps="frei0r dlopen"
2367 frei0r_filter_extralibs='$ldl'
2368 frei0r_src_filter_deps="frei0r dlopen"
2369 frei0r_src_filter_extralibs='$ldl'
2370 geq_filter_deps="gpl"
2371 histeq_filter_deps="gpl"
2372 hqdn3d_filter_deps="gpl"
2373 interlace_filter_deps="gpl"
2374 kerndeint_filter_deps="gpl"
2375 ladspa_filter_deps="ladspa dlopen"
2376 mcdeint_filter_deps="avcodec gpl"
2377 movie_filter_deps="avcodec avformat"
2378 mp_filter_deps="gpl avcodec swscale inline_asm"
2379 mpdecimate_filter_deps="gpl avcodec"
2380 mptestsrc_filter_deps="gpl"
2381 negate_filter_deps="lut_filter"
2382 perspective_filter_deps="gpl"
2383 resample_filter_deps="avresample"
2384 ocv_filter_deps="libopencv"
2385 owdenoise_filter_deps="gpl"
2386 pan_filter_deps="swresample"
2387 phase_filter_deps="gpl"
2388 pp_filter_deps="gpl postproc"
2389 pullup_filter_deps="gpl"
2390 removelogo_filter_deps="avcodec avformat swscale"
2391 sab_filter_deps="gpl swscale"
2392 scale_filter_deps="swscale"
2393 smartblur_filter_deps="gpl swscale"
2394 showspectrum_filter_deps="avcodec"
2395 showspectrum_filter_select="rdft"
2396 spp_filter_deps="gpl avcodec"
2397 spp_filter_select="fft"
2398 stereo3d_filter_deps="gpl"
2399 subtitles_filter_deps="avformat avcodec libass"
2400 super2xsai_filter_deps="gpl"
2401 tinterlace_filter_deps="gpl"
2402 vidstabdetect_filter_deps="libvidstab"
2403 vidstabtransform_filter_deps="libvidstab"
2404 pixfmts_super2xsai_test_deps="super2xsai_filter"
2405 tinterlace_merge_test_deps="tinterlace_filter"
2406 tinterlace_pad_test_deps="tinterlace_filter"
2407 zmq_filter_deps="libzmq"
2408
2409 # examples
2410 avio_reading="avformat avcodec avutil"
2411 avcodec_example_deps="avcodec avutil"
2412 demuxing_decoding_example_deps="avcodec avformat avutil"
2413 filter_audio_example_deps="avfilter avutil"
2414 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2415 filtering_video_example_deps="avfilter avcodec avformat avutil"
2416 metadata_example_deps="avformat avutil"
2417 muxing_example_deps="avcodec avformat avutil swscale"
2418 remuxing_example_deps="avcodec avformat avutil"
2419 resampling_audio_example_deps="avutil swresample"
2420 scaling_video_example_deps="avutil swscale"
2421 transcode_aac_example_deps="avcodec avformat swresample"
2422
2423 # libraries
2424 avcodec_deps="avutil"
2425 avdevice_deps="avutil avcodec avformat"
2426 avfilter_deps="avutil"
2427 avformat_deps="avutil avcodec"
2428 avresample_deps="avutil"
2429 postproc_deps="avutil gpl"
2430 swscale_deps="avutil"
2431
2432 # programs
2433 ffmpeg_deps="avcodec avfilter avformat swresample"
2434 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2435                null_filter
2436                setpts_filter trim_filter"
2437 ffplay_deps="avcodec avformat swscale swresample sdl"
2438 ffplay_libs='$sdl_libs'
2439 ffplay_select="rdft crop_filter"
2440 ffprobe_deps="avcodec avformat"
2441 ffserver_deps="avformat fork sarestart"
2442 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2443
2444 # documentation
2445 podpages_deps="perl"
2446 manpages_deps="perl pod2man"
2447 htmlpages_deps="perl texi2html"
2448 txtpages_deps="perl makeinfo"
2449 doc_deps_any="manpages htmlpages podpages txtpages"
2450
2451 # default parameters
2452
2453 logfile="config.log"
2454
2455 # installation paths
2456 prefix_default="/usr/local"
2457 bindir_default='${prefix}/bin'
2458 datadir_default='${prefix}/share/ffmpeg'
2459 docdir_default='${prefix}/share/doc/ffmpeg'
2460 incdir_default='${prefix}/include'
2461 libdir_default='${prefix}/lib'
2462 mandir_default='${prefix}/share/man'
2463 shlibdir_default="$libdir_default"
2464
2465 # toolchain
2466 ar_default="ar"
2467 cc_default="gcc"
2468 cxx_default="g++"
2469 host_cc_default="gcc"
2470 cp_f="cp -f"
2471 install="install"
2472 ln_s="ln -s -f"
2473 nm_default="nm -g"
2474 objformat="elf"
2475 pkg_config_default=pkg-config
2476 ranlib="ranlib"
2477 strip_default="strip"
2478 yasmexe_default="yasm"
2479 windres_default="windres"
2480
2481 nogas=":"
2482
2483 # machine
2484 arch_default=$(uname -m)
2485 cpu="generic"
2486
2487 # OS
2488 target_os_default=$(tolower $(uname -s))
2489 host_os=$target_os_default
2490
2491 # configurable options
2492 enable $PROGRAM_LIST
2493 enable $DOCUMENT_LIST
2494 enable $EXAMPLE_LIST
2495 enable $(filter_out avresample $LIBRARY_LIST)
2496 enable stripping
2497
2498 enable asm
2499 enable debug
2500 enable doc
2501 enable optimizations
2502 enable runtime_cpudetect
2503 enable safe_bitstream_reader
2504 enable static
2505 enable swscale_alpha
2506
2507 # Enable hwaccels by default.
2508 enable dxva2 vaapi vda vdpau xvmc
2509
2510 # build settings
2511 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2512 LIBPREF="lib"
2513 LIBSUF=".a"
2514 FULLNAME='$(NAME)$(BUILDSUF)'
2515 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2516 SLIBPREF="lib"
2517 SLIBSUF=".so"
2518 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2519 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2520 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2521 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2522 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2523 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2524
2525 asflags_filter=echo
2526 cflags_filter=echo
2527 ldflags_filter=echo
2528
2529 AS_C='-c'
2530 AS_O='-o $@'
2531 CC_C='-c'
2532 CC_E='-E -o $@'
2533 CC_O='-o $@'
2534 CXX_C='-c'
2535 CXX_O='-o $@'
2536 LD_O='-o $@'
2537 LD_LIB='-l%'
2538 LD_PATH='-L'
2539 HOSTCC_C='-c'
2540 HOSTCC_E='-E -o $@'
2541 HOSTCC_O='-o $@'
2542 HOSTLD_O='-o $@'
2543
2544 host_libs='-lm'
2545 host_cflags_filter=echo
2546 host_ldflags_filter=echo
2547
2548 target_path='$(CURDIR)'
2549
2550 # since the object filename is not given with the -MM flag, the compiler
2551 # is only able to print the basename, and we must add the path ourselves
2552 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2553 DEPFLAGS='-MM'
2554
2555 # find source path
2556 if test -f configure; then
2557     source_path=.
2558 else
2559     source_path=$(cd $(dirname "$0"); pwd)
2560     echo "$source_path" | grep -q '[[:blank:]]' &&
2561         die "Out of tree builds are impossible with whitespace in source path."
2562     test -e "$source_path/config.h" &&
2563         die "Out of tree builds are impossible with config.h in source dir."
2564 fi
2565
2566 for v in "$@"; do
2567     r=${v#*=}
2568     l=${v%"$r"}
2569     r=$(sh_quote "$r")
2570     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2571 done
2572
2573 find_things(){
2574     thing=$1
2575     pattern=$2
2576     file=$source_path/$3
2577     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2578 }
2579
2580 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2581 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2582 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2583 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2584 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2585 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2586 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2587 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2588 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2589 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2590 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2591
2592 ALL_COMPONENTS="
2593     $BSF_LIST
2594     $DECODER_LIST
2595     $DEMUXER_LIST
2596     $ENCODER_LIST
2597     $FILTER_LIST
2598     $HWACCEL_LIST
2599     $INDEV_LIST
2600     $MUXER_LIST
2601     $OUTDEV_LIST
2602     $PARSER_LIST
2603     $PROTOCOL_LIST
2604 "
2605
2606 for n in $COMPONENT_LIST; do
2607     v=$(toupper ${n%s})_LIST
2608     eval enable \$$v
2609     eval ${n}_if_any="\$$v"
2610 done
2611
2612 enable $ARCH_EXT_LIST
2613
2614 die_unknown(){
2615     echo "Unknown option \"$1\"."
2616     echo "See $0 --help for available options."
2617     exit 1
2618 }
2619
2620 print_3_columns() {
2621     cat | tr ' ' '\n' | sort | pr -r -3 -t
2622 }
2623
2624 show_list() {
2625     suffix=_$1
2626     shift
2627     echo $* | sed s/$suffix//g | print_3_columns
2628     exit 0
2629 }
2630
2631 rand_list(){
2632     IFS=', '
2633     set -- $*
2634     unset IFS
2635     for thing; do
2636         comp=${thing%:*}
2637         prob=${thing#$comp}
2638         prob=${prob#:}
2639         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2640         echo "prob ${prob:-0.5}"
2641         printf '%s\n' $comp
2642     done
2643 }
2644
2645 do_random(){
2646     action=$1
2647     shift
2648     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2649     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2650 }
2651
2652 for opt do
2653     optval="${opt#*=}"
2654     case "$opt" in
2655         --extra-ldflags=*)
2656             add_ldflags $optval
2657         ;;
2658         --extra-libs=*)
2659             add_extralibs $optval
2660         ;;
2661         --disable-devices)
2662             disable $INDEV_LIST $OUTDEV_LIST
2663         ;;
2664         --enable-debug=*)
2665             debuglevel="$optval"
2666         ;;
2667         --disable-programs)
2668             disable $PROGRAM_LIST
2669         ;;
2670         --disable-everything)
2671             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2672         ;;
2673         --disable-all)
2674             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2675             disable $LIBRARY_LIST $PROGRAM_LIST doc
2676         ;;
2677         --enable-random|--disable-random)
2678             action=${opt%%-random}
2679             do_random ${action#--} $COMPONENT_LIST
2680         ;;
2681         --enable-random=*|--disable-random=*)
2682             action=${opt%%-random=*}
2683             do_random ${action#--} $optval
2684         ;;
2685         --enable-*=*|--disable-*=*)
2686             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2687             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2688             eval list=\$$(toupper $thing)_LIST
2689             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2690             list=$(filter "$name" $list)
2691             [ "$list" = "" ] && warn "Option $opt did not match anything"
2692             $action $list
2693         ;;
2694         --enable-?*|--disable-?*)
2695             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2696             if is_in $option $COMPONENT_LIST; then
2697                 test $action = disable && action=unset
2698                 eval $action \$$(toupper ${option%s})_LIST
2699             elif is_in $option $CMDLINE_SELECT; then
2700                 $action $option
2701             else
2702                 die_unknown $opt
2703             fi
2704         ;;
2705         --list-*)
2706             NAME="${opt#--list-}"
2707             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2708             NAME=${NAME%s}
2709             eval show_list $NAME \$$(toupper $NAME)_LIST
2710         ;;
2711         --help|-h) show_help
2712         ;;
2713         --fatal-warnings) enable fatal_warnings
2714         ;;
2715         *)
2716             optname="${opt%%=*}"
2717             optname="${optname#--}"
2718             optname=$(echo "$optname" | sed 's/-/_/g')
2719             if is_in $optname $CMDLINE_SET; then
2720                 eval $optname='$optval'
2721             elif is_in $optname $CMDLINE_APPEND; then
2722                 append $optname "$optval"
2723             else
2724                 die_unknown $opt
2725             fi
2726         ;;
2727     esac
2728 done
2729
2730 disabled logging && logfile=/dev/null
2731
2732 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2733 set >> $logfile
2734
2735 test -n "$cross_prefix" && enable cross_compile
2736
2737 if enabled cross_compile; then
2738     test -n "$arch" && test -n "$target_os" ||
2739         die "Must specify target arch and OS when cross-compiling"
2740 fi
2741
2742 ar_default="${cross_prefix}${ar_default}"
2743 cc_default="${cross_prefix}${cc_default}"
2744 cxx_default="${cross_prefix}${cxx_default}"
2745 nm_default="${cross_prefix}${nm_default}"
2746 pkg_config_default="${cross_prefix}${pkg_config_default}"
2747 ranlib="${cross_prefix}${ranlib}"
2748 strip_default="${cross_prefix}${strip_default}"
2749 windres_default="${cross_prefix}${windres_default}"
2750
2751 sysinclude_default="${sysroot}/usr/include"
2752
2753 test -n "$valgrind" && toolchain="valgrind-memcheck"
2754
2755 case "$toolchain" in
2756     clang-asan)
2757         cc_default="clang"
2758         add_cflags  -fsanitize=address
2759         add_ldflags -fsanitize=address
2760     ;;
2761     clang-tsan)
2762         cc_default="clang"
2763         add_cflags  -fsanitize=thread -pie
2764         add_ldflags -fsanitize=thread -pie
2765     ;;
2766     clang-usan)
2767         cc_default="clang"
2768         add_cflags  -fsanitize=undefined
2769         add_ldflags -fsanitize=undefined
2770     ;;
2771     gcc-asan)
2772         cc_default="gcc"
2773         add_cflags  -fsanitize=address
2774         add_ldflags -fsanitize=address
2775     ;;
2776     gcc-tsan)
2777         cc_default="gcc"
2778         add_cflags  -fsanitize=thread -pie -fPIC
2779         add_ldflags -fsanitize=thread -pie -fPIC
2780     ;;
2781     gcc-usan)
2782         cc_default="gcc"
2783         add_cflags  -fsanitize=undefined
2784         add_ldflags -fsanitize=undefined
2785     ;;
2786     valgrind-massif)
2787         target_exec_default=${valgrind:-"valgrind"}
2788         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"
2789     ;;
2790     valgrind-memcheck)
2791         target_exec_default=${valgrind:-"valgrind"}
2792         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2793     ;;
2794     msvc)
2795         # Check whether the current MSVC version needs the C99 converter.
2796         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2797         # support enough of C99 to build ffmpeg. Default to the new
2798         # behaviour if the regexp was unable to match anything, since this
2799         # successfully parses the version number of existing supported
2800         # versions that require the converter (MSVC 2010 and 2012).
2801         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2802         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2803             cc_default="cl"
2804         else
2805             cc_default="c99wrap cl"
2806         fi
2807         ld_default="link"
2808         nm_default="dumpbin -symbols"
2809         ar_default="lib"
2810         target_os_default="win32"
2811         # Use a relative path for TMPDIR. This makes sure all the
2812         # ffconf temp files are written with a relative path, avoiding
2813         # issues with msys/win32 path conversion for MSVC parameters
2814         # such as -Fo<file> or -out:<file>.
2815         TMPDIR=.
2816     ;;
2817     icl)
2818         cc_default="icl"
2819         ld_default="xilink"
2820         nm_default="dumpbin -symbols"
2821         ar_default="xilib"
2822         target_os_default="win32"
2823         TMPDIR=.
2824     ;;
2825     gcov)
2826         add_cflags  -fprofile-arcs -ftest-coverage
2827         add_ldflags -fprofile-arcs -ftest-coverage
2828     ;;
2829     hardened)
2830         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2831         add_ldflags -Wl,-z,relro -Wl,-z,now
2832     ;;
2833     ?*)
2834         die "Unknown toolchain $toolchain"
2835     ;;
2836 esac
2837
2838 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2839 enabled cross_compile || host_cc_default=$cc
2840 set_default host_cc
2841
2842 if ! $pkg_config --version >/dev/null 2>&1; then
2843     warn "$pkg_config not found, library detection may fail."
2844     pkg_config=false
2845 fi
2846
2847 exesuf() {
2848     case $1 in
2849         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2850     esac
2851 }
2852
2853 EXESUF=$(exesuf $target_os)
2854 HOSTEXESUF=$(exesuf $host_os)
2855
2856 # set temporary file name
2857 : ${TMPDIR:=$TEMPDIR}
2858 : ${TMPDIR:=$TMP}
2859 : ${TMPDIR:=/tmp}
2860
2861 if [ -n "$tempprefix" ] ; then
2862     mktemp(){
2863         echo $tempprefix.${HOSTNAME}.${UID}
2864     }
2865 elif ! check_cmd mktemp -u XXXXXX; then
2866     # simple replacement for missing mktemp
2867     # NOT SAFE FOR GENERAL USE
2868     mktemp(){
2869         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2870     }
2871 fi
2872
2873 tmpfile(){
2874     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2875         (set -C; exec > $tmp) 2>/dev/null ||
2876         die "Unable to create temporary file in $TMPDIR."
2877     append TMPFILES $tmp
2878     eval $1=$tmp
2879 }
2880
2881 trap 'rm -f -- $TMPFILES' EXIT
2882
2883 tmpfile TMPASM .asm
2884 tmpfile TMPC   .c
2885 tmpfile TMPCPP .cpp
2886 tmpfile TMPE   $EXESUF
2887 tmpfile TMPH   .h
2888 tmpfile TMPO   .o
2889 tmpfile TMPS   .S
2890 tmpfile TMPSH  .sh
2891 tmpfile TMPV   .ver
2892
2893 unset -f mktemp
2894
2895 chmod +x $TMPE
2896
2897 # make sure we can execute files in $TMPDIR
2898 cat > $TMPSH 2>> $logfile <<EOF
2899 #! /bin/sh
2900 EOF
2901 chmod +x $TMPSH >> $logfile 2>&1
2902 if ! $TMPSH >> $logfile 2>&1; then
2903     cat <<EOF
2904 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2905 variable to another directory and make sure that it is not mounted noexec.
2906 EOF
2907     die "Sanity test failed."
2908 fi
2909
2910 ccc_flags(){
2911     for flag; do
2912         case $flag in
2913             -std=c99)           echo -c99                       ;;
2914             -mcpu=*)            echo -arch ${flag#*=}           ;;
2915             -mieee)             echo -ieee                      ;;
2916             -O*|-fast)          echo $flag                      ;;
2917             -fno-math-errno)    echo -assume nomath_errno       ;;
2918             -g)                 echo -g3                        ;;
2919             -Wall)              echo -msg_enable level2         ;;
2920             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2921             -Wl,*)              echo $flag                      ;;
2922             -f*|-W*)                                            ;;
2923             *)                  echo $flag                      ;;
2924         esac
2925    done
2926 }
2927
2928 cparser_flags(){
2929     for flag; do
2930         case $flag in
2931             -Wno-switch)             echo -Wno-switch-enum ;;
2932             -Wno-format-zero-length) ;;
2933             -Wdisabled-optimization) ;;
2934             -Wno-pointer-sign)       echo -Wno-other ;;
2935             *)                       echo $flag ;;
2936         esac
2937     done
2938 }
2939
2940 msvc_common_flags(){
2941     for flag; do
2942         case $flag in
2943             # In addition to specifying certain flags under the compiler
2944             # specific filters, they must be specified here as well or else the
2945             # generic catch all at the bottom will print the original flag.
2946             -Wall)                ;;
2947             -std=c99)             ;;
2948             # Common flags
2949             -fomit-frame-pointer) ;;
2950             -g)                   echo -Z7 ;;
2951             -fno-math-errno)      ;;
2952             -fno-common)          ;;
2953             -fno-signed-zeros)    ;;
2954             -fPIC)                ;;
2955             -mthumb)              ;;
2956             -march=*)             ;;
2957             -lz)                  echo zlib.lib ;;
2958             -lavifil32)           echo vfw32.lib ;;
2959             -lavicap32)           echo vfw32.lib user32.lib ;;
2960             -l*)                  echo ${flag#-l}.lib ;;
2961             *)                    echo $flag ;;
2962         esac
2963     done
2964 }
2965
2966 msvc_flags(){
2967     msvc_common_flags "$@"
2968     for flag; do
2969         case $flag in
2970             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2971                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2972                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2973                                        -wd4554 \
2974                                        -wd4273 ;;
2975         esac
2976     done
2977 }
2978
2979 icl_flags(){
2980     msvc_common_flags "$@"
2981     for flag; do
2982         case $flag in
2983             # Despite what Intel's documentation says -Wall, which is supported
2984             # on Windows, does enable remarks so disable them here.
2985             -Wall)                echo $flag -Qdiag-disable:remark ;;
2986             -std=c99)             echo -Qstd=c99 ;;
2987         esac
2988     done
2989 }
2990
2991 pgi_flags(){
2992     for flag; do
2993         case $flag in
2994             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2995             -fomit-frame-pointer) echo -Mnoframe ;;
2996             -g)                   echo -gopt ;;
2997             *)                    echo $flag ;;
2998         esac
2999     done
3000 }
3001
3002 suncc_flags(){
3003     for flag; do
3004         case $flag in
3005             -march=*|-mcpu=*)
3006                 case "${flag#*=}" in
3007                     native)                   echo -xtarget=native       ;;
3008                     v9|niagara)               echo -xarch=sparc          ;;
3009                     ultrasparc)               echo -xarch=sparcvis       ;;
3010                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3011                     i586|pentium)             echo -xchip=pentium        ;;
3012                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3013                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3014                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3015                     pentium4*)          echo -xtarget=pentium4           ;;
3016                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3017                     *-sse3)             echo -xarch=sse3                 ;;
3018                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3019                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3020                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3021                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3022                     bdver*)                    echo -xarch=avx           ;;
3023                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3024                     k8|opteron|athlon64|athlon-fx)
3025                                                echo -xarch=sse2a         ;;
3026                     athlon*)                   echo -xarch=pentium_proa  ;;
3027                 esac
3028                 ;;
3029             -std=c99)             echo -xc99              ;;
3030             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3031             -fPIC)                echo -KPIC -xcode=pic32 ;;
3032             -W*,*)                echo $flag              ;;
3033             -f*-*|-W*|-mimpure-text)                      ;;
3034             -shared)              echo -G                 ;;
3035             *)                    echo $flag              ;;
3036         esac
3037     done
3038 }
3039
3040 tms470_flags(){
3041     for flag; do
3042         case $flag in
3043             -march=*|-mcpu=*)
3044                 case "${flag#*=}" in
3045                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3046                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3047                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3048                     armv6*|arm11*)          echo -mv=6   ;;
3049                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3050                                             echo -mv=5e  ;;
3051                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3052                 esac
3053                 ;;
3054             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3055             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3056             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3057             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3058             -msoft-float)   echo --float_support=vfplib       ;;
3059             -O[0-3]|-mf=*)  echo $flag                        ;;
3060             -g)             echo -g -mn                       ;;
3061             -pds=*)         echo $flag                        ;;
3062             -D*|-I*)        echo $flag                        ;;
3063             --gcc|--abi=*)  echo $flag                        ;;
3064             -me)            echo $flag                        ;;
3065         esac
3066     done
3067 }
3068
3069 probe_cc(){
3070     pfx=$1
3071     _cc=$2
3072
3073     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3074     unset _ld_o _ldflags _ld_lib _ld_path
3075     unset _depflags _DEPCMD _DEPFLAGS
3076     _flags_filter=echo
3077
3078     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3079         true # no-op to avoid reading stdin in following checks
3080     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3081         _type=llvm_gcc
3082         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3083         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3084         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3085         _cflags_speed='-O3'
3086         _cflags_size='-Os'
3087     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3088         _type=gcc
3089         gcc_version=$($_cc --version | head -n1)
3090         gcc_basever=$($_cc -dumpversion)
3091         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3092         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3093         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3094         if ! $_cc -dumpversion | grep -q '^2\.'; then
3095             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3096         fi
3097         _cflags_speed='-O3'
3098         _cflags_size='-Os'
3099     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3100         _type=icc
3101         _ident=$($_cc --version | head -n1)
3102         _depflags='-MMD'
3103         _cflags_speed='-O3'
3104         _cflags_size='-Os'
3105         _cflags_noopt='-O1'
3106     elif $_cc -v 2>&1 | grep -q xlc; then
3107         _type=xlc
3108         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3109         _cflags_speed='-O5'
3110         _cflags_size='-O5 -qcompact'
3111     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3112         _type=ccc
3113         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3114         _DEPFLAGS='-M'
3115         _cflags_speed='-fast'
3116         _cflags_size='-O1'
3117         _flags_filter=ccc_flags
3118     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
3119         test -d "$sysroot" || die "No valid sysroot specified."
3120         _type=armcc
3121         _ident=$($_cc --vsn | head -n1)
3122         armcc_conf="$PWD/armcc.conf"
3123         $_cc --arm_linux_configure                 \
3124              --arm_linux_config_file="$armcc_conf" \
3125              --configure_sysroot="$sysroot"        \
3126              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3127              die "Error creating armcc configuration file."
3128         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3129         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3130         as_default="${cross_prefix}gcc"
3131         _depflags='-MMD'
3132         _cflags_speed='-O3'
3133         _cflags_size='-Os'
3134     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3135         _type=tms470
3136         _ident=$($_cc -version | head -n1 | tr -s ' ')
3137         _flags='--gcc --abi=eabi -me'
3138         _cc_e='-ppl -fe=$@'
3139         _cc_o='-fe=$@'
3140         _depflags='-ppa -ppd=$(@:.o=.d)'
3141         _cflags_speed='-O3 -mf=5'
3142         _cflags_size='-O3 -mf=2'
3143         _flags_filter=tms470_flags
3144     elif $_cc -v 2>&1 | grep -q clang; then
3145         _type=clang
3146         _ident=$($_cc --version | head -n1)
3147         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3148         _cflags_speed='-O3'
3149         _cflags_size='-Os'
3150     elif $_cc -V 2>&1 | grep -q Sun; then
3151         _type=suncc
3152         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3153         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3154         _DEPFLAGS='-xM1 -xc99'
3155         _ldflags='-std=c99'
3156         _cflags_speed='-O5'
3157         _cflags_size='-O5 -xspace'
3158         _flags_filter=suncc_flags
3159     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3160         _type=pathscale
3161         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3162         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3163         _cflags_speed='-O2'
3164         _cflags_size='-Os'
3165         _flags_filter='filter_out -Wdisabled-optimization'
3166     elif $_cc -v 2>&1 | grep -q Open64; then
3167         _type=open64
3168         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3169         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3170         _cflags_speed='-O2'
3171         _cflags_size='-Os'
3172         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3173     elif $_cc -V 2>&1 | grep -q Portland; then
3174         _type=pgi
3175         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3176         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3177         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3178         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3179         _cflags_noopt="-O"
3180         _flags_filter=pgi_flags
3181     elif $_cc 2>&1 | grep -q Microsoft; then
3182         _type=msvc
3183         _ident=$($cc 2>&1 | head -n1)
3184         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3185         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3186         _cflags_speed="-O2"
3187         _cflags_size="-O1"
3188         if $_cc 2>&1 | grep -q Linker; then
3189             _ld_o='-out:$@'
3190         else
3191             _ld_o='-Fe$@'
3192         fi
3193         _cc_o='-Fo$@'
3194         _cc_e='-P -Fi$@'
3195         _flags_filter=msvc_flags
3196         _ld_lib='lib%.a'
3197         _ld_path='-libpath:'
3198         _flags='-nologo'
3199         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3200         if [ $pfx = hostcc ]; then
3201             append _cflags -Dsnprintf=_snprintf
3202         fi
3203         disable stripping
3204     elif $_cc 2>&1 | grep -q Intel; then
3205         _type=icl
3206         _ident=$($cc 2>&1 | head -n1)
3207         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3208         # Not only is O3 broken on 13.x+ but it is slower on all previous
3209         # versions (tested) as well.
3210         _cflags_speed="-O2"
3211         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3212         if $_cc 2>&1 | grep -q Linker; then
3213             _ld_o='-out:$@'
3214         else
3215             _ld_o='-Fe$@'
3216         fi
3217         _cc_o='-Fo$@'
3218         _cc_e='-P'
3219         _flags_filter=icl_flags
3220         _ld_lib='lib%.a'
3221         _ld_path='-libpath:'
3222         # -Qdiag-error to make icl error when seeing certain unknown arguments
3223         _flags='-nologo -Qdiag-error:4044,10157'
3224         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3225         # with MSVC which enables it by default.
3226         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3227         if [ $pfx = hostcc ]; then
3228             append _cflags -Dsnprintf=_snprintf
3229         fi
3230     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3231         _type=cparser
3232         _ident=$($_cc --version | head -n1)
3233         _depflags='-MMD'
3234         _cflags_speed='-O4'
3235         _cflags_size='-O2'
3236         _flags_filter=cparser_flags
3237     fi
3238
3239     eval ${pfx}_type=\$_type
3240     eval ${pfx}_ident=\$_ident
3241 }
3242
3243 set_ccvars(){
3244     eval ${1}_C=\${_cc_c-\${${1}_C}}
3245     eval ${1}_E=\${_cc_e-\${${1}_E}}
3246     eval ${1}_O=\${_cc_o-\${${1}_O}}
3247
3248     if [ -n "$_depflags" ]; then
3249         eval ${1}_DEPFLAGS=\$_depflags
3250     else
3251         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3252         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3253         eval DEP${1}FLAGS=\$_flags
3254     fi
3255 }
3256
3257 probe_cc cc "$cc"
3258 cflags_filter=$_flags_filter
3259 cflags_speed=$_cflags_speed
3260 cflags_size=$_cflags_size
3261 cflags_noopt=$_cflags_noopt
3262 add_cflags $_flags $_cflags
3263 cc_ldflags=$_ldflags
3264 set_ccvars CC
3265
3266 probe_cc hostcc "$host_cc"
3267 host_cflags_filter=$_flags_filter
3268 add_host_cflags  $_flags $_cflags
3269 set_ccvars HOSTCC
3270
3271 test -n "$cc_type" && enable $cc_type ||
3272     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3273
3274 : ${as_default:=$cc}
3275 : ${dep_cc_default:=$cc}
3276 : ${ld_default:=$cc}
3277 : ${host_ld_default:=$host_cc}
3278 set_default ar as dep_cc ld host_ld windres
3279
3280 probe_cc as "$as"
3281 asflags_filter=$_flags_filter
3282 add_asflags $_flags $_cflags
3283 set_ccvars AS
3284
3285 probe_cc ld "$ld"
3286 ldflags_filter=$_flags_filter
3287 add_ldflags $_flags $_ldflags
3288 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3289 LD_O=${_ld_o-$LD_O}
3290 LD_LIB=${_ld_lib-$LD_LIB}
3291 LD_PATH=${_ld_path-$LD_PATH}
3292
3293 probe_cc hostld "$host_ld"
3294 host_ldflags_filter=$_flags_filter
3295 add_host_ldflags $_flags $_ldflags
3296 HOSTLD_O=${_ld_o-$HOSTLD_O}
3297
3298 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3299     probe_cc depcc "$dep_cc"
3300     CCDEP=${_DEPCMD:-$DEPCMD}
3301     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3302     DEPCCFLAGS=$_flags
3303 fi
3304
3305 if $ar 2>&1 | grep -q Microsoft; then
3306     arflags="-nologo"
3307     ar_o='-out:$@'
3308 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3309     arflags="rq"
3310     ar_o='$@'
3311 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3312     arflags='-Xany -r -c'
3313     ar_o='$@'
3314 else
3315     arflags="rc"
3316     ar_o='$@'
3317 fi
3318
3319 add_cflags $extra_cflags
3320 add_cxxflags $extra_cxxflags
3321 add_asflags $extra_cflags
3322
3323 if test -n "$sysroot"; then
3324     case "$cc_type" in
3325         gcc|llvm_gcc|clang)
3326             add_cppflags --sysroot="$sysroot"
3327             add_ldflags --sysroot="$sysroot"
3328 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3329             add_cppflags -isysroot "$sysroot"
3330             add_ldflags -isysroot "$sysroot"
3331         ;;
3332         tms470)
3333             add_cppflags -I"$sysinclude"
3334             add_ldflags  --sysroot="$sysroot"
3335         ;;
3336     esac
3337 fi
3338
3339 if test "$cpu" = host; then
3340     enabled cross_compile &&
3341         die "--cpu=host makes no sense when cross-compiling."
3342
3343     case "$cc_type" in
3344         gcc|llvm_gcc)
3345             check_native(){
3346                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3347                 sed -n "/cc1.*$1=/{
3348                             s/.*$1=\\([^ ]*\\).*/\\1/
3349                             p
3350                             q
3351                         }" $TMPE
3352             }
3353             cpu=$(check_native -march || check_native -mcpu)
3354         ;;
3355     esac
3356
3357     test "${cpu:-host}" = host &&
3358         die "--cpu=host not supported with compiler $cc"
3359 fi
3360
3361 # Deal with common $arch aliases
3362 case "$arch" in
3363     aarch64|arm64)
3364         arch="aarch64"
3365     ;;
3366     arm*|iPad*|iPhone*)
3367         arch="arm"
3368     ;;
3369     mips*|IP*)
3370         arch="mips"
3371     ;;
3372     parisc*|hppa*)
3373         arch="parisc"
3374     ;;
3375     "Power Macintosh"|ppc*|powerpc*)
3376         arch="ppc"
3377     ;;
3378     s390|s390x)
3379         arch="s390"
3380     ;;
3381     sh4|sh)
3382         arch="sh4"
3383     ;;
3384     sun4u|sparc*)
3385         arch="sparc"
3386     ;;
3387     tilegx|tile-gx)
3388         arch="tilegx"
3389     ;;
3390     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3391         arch="x86"
3392     ;;
3393 esac
3394
3395 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3396 enable $arch
3397
3398 # Add processor-specific flags
3399 if enabled aarch64; then
3400
3401     case $cpu in
3402         armv*)
3403             cpuflags="-march=$cpu"
3404         ;;
3405         *)
3406             cpuflags="-mcpu=$cpu"
3407         ;;
3408     esac
3409
3410 elif enabled alpha; then
3411
3412     cpuflags="-mcpu=$cpu"
3413
3414 elif enabled arm; then
3415
3416     check_arm_arch() {
3417         check_cpp_condition stddef.h \
3418             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3419             $cpuflags
3420     }
3421
3422     probe_arm_arch() {
3423         if   check_arm_arch 4;        then echo armv4;
3424         elif check_arm_arch 4T;       then echo armv4t;
3425         elif check_arm_arch 5;        then echo armv5;
3426         elif check_arm_arch 5E;       then echo armv5e;
3427         elif check_arm_arch 5T;       then echo armv5t;
3428         elif check_arm_arch 5TE;      then echo armv5te;
3429         elif check_arm_arch 5TEJ;     then echo armv5te;
3430         elif check_arm_arch 6;        then echo armv6;
3431         elif check_arm_arch 6J;       then echo armv6j;
3432         elif check_arm_arch 6K;       then echo armv6k;
3433         elif check_arm_arch 6Z;       then echo armv6z;
3434         elif check_arm_arch 6ZK;      then echo armv6zk;
3435         elif check_arm_arch 6T2;      then echo armv6t2;
3436         elif check_arm_arch 7;        then echo armv7;
3437         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3438         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3439         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3440         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3441         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3442         fi
3443     }
3444
3445     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3446
3447     case $cpu in
3448         armv*)
3449             cpuflags="-march=$cpu"
3450             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3451         ;;
3452         *)
3453             cpuflags="-mcpu=$cpu"
3454             case $cpu in
3455                 cortex-a*)                               subarch=armv7a  ;;
3456                 cortex-r*)                               subarch=armv7r  ;;
3457                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3458                 arm11*)                                  subarch=armv6   ;;
3459                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3460                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3461                 *)                             subarch=$(probe_arm_arch) ;;
3462             esac
3463         ;;
3464     esac
3465
3466     case "$subarch" in
3467         armv5t*)    enable fast_clz                ;;
3468         armv[6-8]*) enable fast_clz fast_unaligned ;;
3469     esac
3470
3471 elif enabled avr32; then
3472
3473     case $cpu in
3474         ap7[02]0[0-2])
3475             subarch="avr32_ap"
3476             cpuflags="-mpart=$cpu"
3477         ;;
3478         ap)
3479             subarch="avr32_ap"
3480             cpuflags="-march=$cpu"
3481         ;;
3482         uc3[ab]*)
3483             subarch="avr32_uc"
3484             cpuflags="-mcpu=$cpu"
3485         ;;
3486         uc)
3487             subarch="avr32_uc"
3488             cpuflags="-march=$cpu"
3489         ;;
3490     esac
3491
3492 elif enabled bfin; then
3493
3494     cpuflags="-mcpu=$cpu"
3495
3496 elif enabled mips; then
3497
3498     cpuflags="-march=$cpu"
3499
3500     case $cpu in
3501         24kc)
3502             disable mipsfpu
3503             disable mipsdspr1
3504             disable mipsdspr2
3505         ;;
3506         24kf*)
3507             disable mipsdspr1
3508             disable mipsdspr2
3509         ;;
3510         24kec|34kc|1004kc)
3511             disable mipsfpu
3512             disable mipsdspr2
3513         ;;
3514         24kef*|34kf*|1004kf*)
3515             disable mipsdspr2
3516         ;;
3517         74kc)
3518             disable mipsfpu
3519         ;;
3520     esac
3521
3522 elif enabled ppc; then
3523
3524     case $(tolower $cpu) in
3525         601|ppc601|powerpc601)
3526             cpuflags="-mcpu=601"
3527             disable altivec
3528         ;;
3529         603*|ppc603*|powerpc603*)
3530             cpuflags="-mcpu=603"
3531             disable altivec
3532         ;;
3533         604*|ppc604*|powerpc604*)
3534             cpuflags="-mcpu=604"
3535             disable altivec
3536         ;;
3537         g3|75*|ppc75*|powerpc75*)
3538             cpuflags="-mcpu=750"
3539             disable altivec
3540         ;;
3541         g4|745*|ppc745*|powerpc745*)
3542             cpuflags="-mcpu=7450"
3543         ;;
3544         74*|ppc74*|powerpc74*)
3545             cpuflags="-mcpu=7400"
3546         ;;
3547         g5|970|ppc970|powerpc970)
3548             cpuflags="-mcpu=970"
3549         ;;
3550         power[3-7]*)
3551             cpuflags="-mcpu=$cpu"
3552         ;;
3553         cell)
3554             cpuflags="-mcpu=cell"
3555             enable ldbrx
3556         ;;
3557         e500mc)
3558             cpuflags="-mcpu=e500mc"
3559             disable altivec
3560         ;;
3561         e500v2)
3562             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3563             disable altivec
3564         ;;
3565         e500)
3566             cpuflags="-mcpu=8540 -mhard-float"
3567             disable altivec
3568         ;;
3569     esac
3570
3571 elif enabled sparc; then
3572
3573     case $cpu in
3574         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3575             cpuflags="-mcpu=$cpu"
3576             disable vis
3577         ;;
3578         ultrasparc*|niagara[234])
3579             cpuflags="-mcpu=$cpu"
3580         ;;
3581     esac
3582
3583 elif enabled x86; then
3584
3585     case $cpu in
3586         i[345]86|pentium)
3587             cpuflags="-march=$cpu"
3588             disable mmx
3589         ;;
3590         # targets that do NOT support nopl and conditional mov (cmov)
3591         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3592             cpuflags="-march=$cpu"
3593             disable i686
3594         ;;
3595         # targets that do support nopl and conditional mov (cmov)
3596         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3597             cpuflags="-march=$cpu"
3598             enable i686
3599             enable fast_cmov
3600         ;;
3601         # targets that do support conditional mov but on which it's slow
3602         pentium4|pentium4m|prescott|nocona)
3603             cpuflags="-march=$cpu"
3604             enable i686
3605             disable fast_cmov
3606         ;;
3607     esac
3608
3609 fi
3610
3611 if [ "$cpu" != generic ]; then
3612     add_cflags  $cpuflags
3613     add_asflags $cpuflags
3614 fi
3615
3616 # compiler sanity check
3617 check_exec <<EOF
3618 int main(void){ return 0; }
3619 EOF
3620 if test "$?" != 0; then
3621     echo "$cc is unable to create an executable file."
3622     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3623         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3624         echo "Only do this if you know what cross compiling means."
3625     fi
3626     die "C compiler test failed."
3627 fi
3628
3629 add_cppflags -D_ISOC99_SOURCE
3630 add_cxxflags -D__STDC_CONSTANT_MACROS
3631 check_cflags -std=c99
3632 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3633 #include <stdlib.h>
3634 EOF
3635 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3636 #include <stdlib.h>
3637 EOF
3638
3639 add_host_cppflags -D_ISOC99_SOURCE
3640 check_host_cflags -std=c99
3641 check_host_cflags -Wall
3642 check_host_cflags -O3
3643
3644 check_64bit(){
3645     arch32=$1
3646     arch64=$2
3647     expr=$3
3648     check_code cc "" "int test[2*($expr) - 1]" &&
3649         subarch=$arch64 || subarch=$arch32
3650 }
3651
3652 case "$arch" in
3653     aarch64|alpha|ia64)
3654         spic=$shared
3655     ;;
3656     mips)
3657         check_64bit mips mips64 '_MIPS_SIM > 1'
3658         spic=$shared
3659     ;;
3660     parisc)
3661         check_64bit parisc parisc64 'sizeof(void *) > 4'
3662         spic=$shared
3663     ;;
3664     ppc)
3665         check_64bit ppc ppc64 'sizeof(void *) > 4'
3666         spic=$shared
3667     ;;
3668     s390)
3669         check_64bit s390 s390x 'sizeof(void *) > 4'
3670         spic=$shared
3671     ;;
3672     sparc)
3673         check_64bit sparc sparc64 'sizeof(void *) > 4'
3674         spic=$shared
3675     ;;
3676     x86)
3677         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3678         if test "$subarch" = "x86_64"; then
3679             spic=$shared
3680         fi
3681     ;;
3682     ppc)
3683         check_cc <<EOF && subarch="ppc64"
3684         int test[(int)sizeof(char*) - 7];
3685 EOF
3686     ;;
3687 esac
3688
3689 enable $subarch
3690 enabled spic && enable_weak pic
3691
3692 # OS specific
3693 case $target_os in
3694     aix)
3695         SHFLAGS=-shared
3696         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3697         enabled shared && add_ldflags -Wl,-brtl
3698         ;;
3699     haiku)
3700         prefix_default="/boot/common"
3701         network_extralibs="-lnetwork"
3702         host_libs=
3703         ;;
3704     sunos)
3705         SHFLAGS='-shared -Wl,-h,$$(@F)'
3706         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3707         network_extralibs="-lsocket -lnsl"
3708         # When using suncc to build, the Solaris linker will mark
3709         # an executable with each instruction set encountered by
3710         # the Solaris assembler.  As our libraries contain their own
3711         # guards for processor-specific code, instead suppress
3712         # generation of the HWCAPS ELF section on Solaris x86 only.
3713         enabled_all suncc x86 &&
3714             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3715             add_ldflags -Wl,-M,mapfile
3716         nm_default='nm -P -g'
3717         ;;
3718     netbsd)
3719         disable symver
3720         oss_indev_extralibs="-lossaudio"
3721         oss_outdev_extralibs="-lossaudio"
3722         enabled gcc || check_ldflags -Wl,-zmuldefs
3723         ;;
3724     openbsd|bitrig)
3725         disable symver
3726         SHFLAGS='-shared'
3727         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3728         SLIB_INSTALL_LINKS=
3729         oss_indev_extralibs="-lossaudio"
3730         oss_outdev_extralibs="-lossaudio"
3731         ;;
3732     dragonfly)
3733         disable symver
3734         ;;
3735     freebsd)
3736         ;;
3737     bsd/os)
3738         add_extralibs -lpoll -lgnugetopt
3739         strip="strip -d"
3740         ;;
3741     darwin)
3742         gas="gas-preprocessor.pl $cc"
3743         enabled ppc && add_asflags -force_cpusubtype_ALL
3744         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3745         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3746         strip="${strip} -x"
3747         add_ldflags -Wl,-dynamic,-search_paths_first
3748         SLIBSUF=".dylib"
3749         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3750         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3751         objformat="macho"
3752         enabled x86_64 && objformat="macho64"
3753         enabled_any pic shared ||
3754             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3755         ;;
3756     mingw32*)
3757         if test $target_os = "mingw32ce"; then
3758             disable network
3759         else
3760             target_os=mingw32
3761         fi
3762         LIBTARGET=i386
3763         if enabled x86_64; then
3764             LIBTARGET="i386:x86-64"
3765         elif enabled arm; then
3766             LIBTARGET=arm-wince
3767         fi
3768         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3769         check_ldflags -Wl,--nxcompat
3770         check_ldflags -Wl,--dynamicbase
3771         shlibdir_default="$bindir_default"
3772         SLIBPREF=""
3773         SLIBSUF=".dll"
3774         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3775         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3776         dlltool="${cross_prefix}dlltool"
3777         if check_cmd lib.exe -list; then
3778             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3779             if enabled x86_64; then
3780                 LIBTARGET=x64
3781             fi
3782         elif check_cmd $dlltool --version; then
3783             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3784         fi
3785         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3786         SLIB_INSTALL_LINKS=
3787         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3788         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3789         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3790         objformat="win32"
3791         ranlib=:
3792         enable dos_paths
3793         ;;
3794     win32|win64)
3795         disable symver
3796         if enabled shared; then
3797             # Link to the import library instead of the normal static library
3798             # for shared libs.
3799             LD_LIB='%.lib'
3800             # Cannot build both shared and static libs with MSVC or icl.
3801             disable static
3802         fi
3803         shlibdir_default="$bindir_default"
3804         SLIBPREF=""
3805         SLIBSUF=".dll"
3806         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3807         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3808         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3809         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3810         SLIB_INSTALL_LINKS=
3811         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3812         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3813         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3814         objformat="win32"
3815         ranlib=:
3816         enable dos_paths
3817         ;;
3818     cygwin*)
3819         target_os=cygwin
3820         shlibdir_default="$bindir_default"
3821         SLIBPREF="cyg"
3822         SLIBSUF=".dll"
3823         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3824         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3825         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3826         SLIB_INSTALL_LINKS=
3827         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3828         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3829         objformat="win32"
3830         enable dos_paths
3831         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3832         ;;
3833     *-dos|freedos|opendos)
3834         network_extralibs="-lsocket"
3835         objformat="coff"
3836         enable dos_paths
3837         add_cppflags -U__STRICT_ANSI__
3838         ;;
3839     linux)
3840         enable dv1394
3841         ;;
3842     irix*)
3843         target_os=irix
3844         ranlib="echo ignoring ranlib"
3845         ;;
3846     os/2*)
3847         strip="lxlite -CS"
3848         ln_s="cp -f"
3849         objformat="aout"
3850         add_cppflags -D_GNU_SOURCE
3851         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3852         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3853         LIBSUF="_s.a"
3854         SLIBPREF=""
3855         SLIBSUF=".dll"
3856         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3857         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3858         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3859             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3860             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3861             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3862             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3863             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3864         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3865             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3866         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3867         enable dos_paths
3868         enable_weak os2threads
3869         ;;
3870     gnu/kfreebsd)
3871         add_cppflags -D_BSD_SOURCE
3872         ;;
3873     gnu)
3874         ;;
3875     qnx)
3876         add_cppflags -D_QNX_SOURCE
3877         network_extralibs="-lsocket"
3878         ;;
3879     symbian)
3880         SLIBSUF=".dll"
3881         enable dos_paths
3882         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3883         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3884         add_ldflags -Wl,--target1-abs,--no-undefined \
3885                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3886                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3887         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3888                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3889                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3890         ;;
3891     osf1)
3892         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3893         ;;
3894     minix)
3895         ;;
3896     plan9)
3897         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3898                      -D_REENTRANT_SOURCE        \
3899                      -D_RESEARCH_SOURCE         \
3900                      -DFD_SETSIZE=96            \
3901                      -DHAVE_SOCK_OPTS
3902         add_compat strtod.o strtod=avpriv_strtod
3903         network_extralibs='-lbsd'
3904         exeobjs=compat/plan9/main.o
3905         disable ffserver
3906         cp_f='cp'
3907         ;;
3908     none)
3909         ;;
3910     *)
3911         die "Unknown OS '$target_os'."
3912         ;;
3913 esac
3914
3915 # determine libc flavour
3916
3917 probe_libc(){
3918     pfx=$1
3919     pfx_no_=${pfx%_}
3920     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3921     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3922         eval ${pfx}libc_type=uclibc
3923         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3924     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3925         eval ${pfx}libc_type=glibc
3926         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3927     # MinGW headers can be installed on Cygwin, so check for newlib first.
3928     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3929         eval ${pfx}libc_type=newlib
3930         add_${pfx}cppflags -U__STRICT_ANSI__
3931     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3932     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3933         eval ${pfx}libc_type=mingw64
3934         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
3935             add_compat msvcrt/snprintf.o
3936             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3937         fi
3938         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3939         eval test \$${pfx_no_}cc_type = "gcc" &&
3940             add_${pfx}cppflags -D__printf__=__gnu_printf__
3941     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3942          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3943         eval ${pfx}libc_type=mingw32
3944         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3945             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3946             die "ERROR: MinGW32 runtime version must be >= 3.15."
3947         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3948         eval test \$${pfx_no_}cc_type = "gcc" &&
3949             add_${pfx}cppflags -D__printf__=__gnu_printf__
3950     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3951         eval ${pfx}libc_type=msvcrt
3952         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3953         # 0x601 by default unless something else is set by the user.
3954         # This can easily lead to us detecting functions only present
3955         # in such new versions and producing binaries requiring windows 7.0.
3956         # Therefore explicitly set the default to XP unless the user has
3957         # set something else on the command line.
3958         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3959             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3960     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3961         eval ${pfx}libc_type=klibc
3962     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3963         eval ${pfx}libc_type=bionic
3964     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3965         eval ${pfx}libc_type=solaris
3966         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3967     fi
3968 }
3969
3970 probe_libc
3971 test -n "$libc_type" && enable libc_$libc_type
3972 probe_libc host_
3973 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3974
3975 case $libc_type in
3976     bionic)
3977         add_compat strtod.o strtod=avpriv_strtod
3978         ;;
3979     msvcrt)
3980         add_compat strtod.o strtod=avpriv_strtod
3981         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3982                                      _snprintf=avpriv_snprintf  \
3983                                      vsnprintf=avpriv_vsnprintf
3984         ;;
3985 esac
3986
3987 # hacks for compiler/libc/os combinations
3988
3989 if enabled_all tms470 libc_glibc; then
3990     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3991     add_cppflags -D__USER_LABEL_PREFIX__=
3992     add_cppflags -D__builtin_memset=memset
3993     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3994     add_cflags   -pds=48    # incompatible redefinition of macro
3995 fi
3996
3997 if enabled_all ccc libc_glibc; then
3998     add_ldflags -Wl,-z,now  # calls to libots crash without this
3999 fi
4000
4001 esc(){
4002     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4003 }
4004
4005 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4006
4007 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4008
4009 set_default $PATHS_LIST
4010 set_default nm
4011
4012 # we need to build at least one lib type
4013 if ! enabled_any static shared; then
4014     cat <<EOF
4015 At least one library type must be built.
4016 Specify --enable-static to build the static libraries or --enable-shared to
4017 build the shared libraries as well. To only build the shared libraries specify
4018 --disable-static in addition to --enable-shared.
4019 EOF
4020     exit 1;
4021 fi
4022
4023 # backward compatibility layer for incompatible_libav/fork_abi
4024 enabled incompatible_fork_abi  && enable incompatible_libav_abi
4025 enabled incompatible_libav_abi && enable incompatible_fork_abi
4026
4027 die_license_disabled() {
4028     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4029 }
4030
4031 die_license_disabled_gpl() {
4032     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4033 }
4034
4035 die_license_disabled gpl frei0r
4036 die_license_disabled gpl libcdio
4037 die_license_disabled gpl libutvideo
4038 die_license_disabled gpl libvidstab
4039 die_license_disabled gpl libx264
4040 die_license_disabled gpl libx265
4041 die_license_disabled gpl libxavs
4042 die_license_disabled gpl libxvid
4043 die_license_disabled gpl libzvbi
4044 die_license_disabled gpl x11grab
4045
4046 die_license_disabled nonfree libaacplus
4047 die_license_disabled nonfree libfaac
4048 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4049 enabled gpl && die_license_disabled_gpl nonfree openssl
4050
4051 die_license_disabled version3 libopencore_amrnb
4052 die_license_disabled version3 libopencore_amrwb
4053 die_license_disabled version3 libvo_aacenc
4054 die_license_disabled version3 libvo_amrwbenc
4055
4056 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4057
4058 disabled optimizations || check_cflags -fomit-frame-pointer
4059
4060 enable_weak_pic() {
4061     disabled pic && return
4062     enable pic
4063     add_cppflags -DPIC
4064     case "$target_os" in
4065     mingw*|cygwin*)
4066         ;;
4067     *)
4068         add_cflags -fPIC
4069         ;;
4070     esac
4071     add_asflags  -fPIC
4072 }
4073
4074 enabled pic && enable_weak_pic
4075
4076 check_cc <<EOF || die "Symbol mangling check failed."
4077 int ff_extern;
4078 EOF
4079 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4080 extern_prefix=${sym%%ff_extern*}
4081
4082 check_cc <<EOF && enable_weak inline_asm
4083 void foo(void) { __asm__ volatile ("" ::); }
4084 EOF
4085
4086 _restrict=
4087 for restrict_keyword in restrict __restrict__ __restrict; do
4088     check_cc <<EOF && _restrict=$restrict_keyword && break
4089 void foo(char * $restrict_keyword p);
4090 EOF
4091 done
4092
4093 check_cc <<EOF && enable pragma_deprecated
4094 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4095 EOF
4096
4097 check_cc <<EOF && enable attribute_packed
4098 struct { int x; } __attribute__((packed)) x;
4099 EOF
4100
4101 check_cc <<EOF && enable attribute_may_alias
4102 union { int x; } __attribute__((may_alias)) x;
4103 EOF
4104
4105 check_cc <<EOF || die "endian test failed"
4106 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4107 EOF
4108 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4109
4110 check_inline_asm inline_asm_labels '"1:\n"'
4111
4112 if enabled aarch64; then
4113     # internal assembler in clang 3.3 does not support this instruction
4114     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4115     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4116
4117     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4118
4119 elif enabled alpha; then
4120
4121     check_cflags -mieee
4122
4123 elif enabled arm; then
4124
4125     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4126 float func(float a, float b){ return a+b; }
4127 EOF
4128
4129     enabled thumb && check_cflags -mthumb || check_cflags -marm
4130     nogas=die
4131
4132     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4133         enable vfp_args
4134     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4135         case "${cross_prefix:-$cc}" in
4136             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4137             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4138 __asm__ (".eabi_attribute 28, 1");
4139 int main(void) { return 0; }
4140 EOF
4141         esac
4142         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4143     fi
4144
4145     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4146     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4147     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4148     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4149     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4150     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4151
4152     [ $target_os = linux ] ||
4153         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4154             $ARCH_EXT_LIST_ARM
4155
4156     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4157
4158     # llvm's integrated assembler supports .object_arch from llvm 3.5
4159     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4160 .object_arch armv4
4161 EOF
4162
4163     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4164
4165 elif enabled mips; then
4166
4167     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4168     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4169      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4170     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4171      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4172     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4173      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4174     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4175      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4176
4177 elif enabled parisc; then
4178
4179     if enabled gcc; then
4180         case $($cc -dumpversion) in
4181             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4182         esac
4183     fi
4184
4185 elif enabled ppc; then
4186
4187     enable local_aligned_8 local_aligned_16
4188
4189     [ $cpu != e500 -a $cpu != e500v2 ] &&
4190      check_inline_asm dcbzl    '"dcbzl 0, %0" :: "r"(0)'
4191     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4192     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4193     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4194
4195     # AltiVec flags: The FSF version of GCC differs from the Apple version
4196     if enabled altivec; then
4197         if ! enabled_any pic ppc64; then
4198             nogas=warn
4199         fi
4200         check_cflags -maltivec -mabi=altivec &&
4201         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4202         check_cflags -faltivec
4203
4204         # check if our compiler supports Motorola AltiVec C API
4205         check_cc <<EOF || disable altivec
4206 $inc_altivec_h
4207 int main(void) {
4208     vector signed int v1 = (vector signed int) { 0 };
4209     vector signed int v2 = (vector signed int) { 1 };
4210     v1 = vec_add(v1, v2);
4211     return 0;
4212 }
4213 EOF
4214
4215         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4216     fi
4217
4218 elif enabled sparc; then
4219
4220     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
4221
4222 elif enabled x86; then
4223
4224     check_builtin rdtsc    intrin.h   "__rdtsc()"
4225     check_builtin mm_empty mmintrin.h "_mm_empty()"
4226
4227     enable local_aligned_8 local_aligned_16
4228
4229     # check whether EBP is available on x86
4230     # As 'i' is stored on the stack, this program will crash
4231     # if the base pointer is used to access it because the
4232     # base pointer is cleared in the inline assembly code.
4233     check_exec_crash <<EOF && enable ebp_available
4234 volatile int i=0;
4235 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4236 return i;
4237 EOF
4238
4239     # check whether EBX is available on x86
4240     check_inline_asm ebx_available '""::"b"(0)' &&
4241         check_inline_asm ebx_available '"":::"%ebx"'
4242
4243     # check whether xmm clobbers are supported
4244     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4245
4246     # check whether binutils is new enough to compile SSSE3/MMXEXT
4247     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4248     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4249
4250     if ! disabled_any asm mmx yasm; then
4251         if check_cmd $yasmexe --version; then
4252             enabled x86_64 && yasm_extra="-m amd64"
4253             yasm_debug="-g dwarf2"
4254         elif check_cmd nasm -v; then
4255             yasmexe=nasm
4256             yasm_debug="-g -F dwarf"
4257             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4258         fi
4259
4260         YASMFLAGS="-f $objformat $yasm_extra"
4261         enabled pic               && append YASMFLAGS "-DPIC"
4262         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4263         case "$objformat" in
4264             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4265         esac
4266
4267         check_yasm "movbe ecx, [5]" && enable yasm ||
4268             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4269         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4270         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4271         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4272         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4273         check_yasm "CPU amdnop" || disable cpunop
4274     fi
4275
4276     case "$cpu" in
4277         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4278             disable fast_clz
4279         ;;
4280     esac
4281
4282 fi
4283
4284 if enabled asm; then
4285     as=${gas:=$as}
4286     check_as <<EOF && enable gnu_as || \
4287         $nogas "GNU assembler not found, install gas-preprocessor"
4288 .macro m n
4289 \n: .int 0
4290 .endm
4291 m x
4292 EOF
4293 fi
4294
4295 check_ldflags -Wl,--as-needed
4296 check_ldflags -Wl,-z,noexecstack
4297
4298 if check_func dlopen; then
4299     ldl=
4300 elif check_func dlopen -ldl; then
4301     ldl=-ldl
4302 fi
4303
4304 if ! disabled network; then
4305     check_type "sys/types.h sys/socket.h" socklen_t
4306     check_type netdb.h "struct addrinfo"
4307     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4308     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4309     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4310     check_type netinet/in.h "struct sockaddr_in6"
4311     check_type poll.h "struct pollfd"
4312     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4313     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4314     check_type netinet/sctp.h "struct sctp_event_subscribe"
4315     check_func getaddrinfo $network_extralibs
4316     check_func getservbyport $network_extralibs
4317     check_func inet_aton $network_extralibs
4318     # Prefer arpa/inet.h over winsock2
4319     if check_header arpa/inet.h ; then
4320         check_func closesocket
4321     elif check_header winsock2.h ; then
4322         check_func_headers winsock2.h closesocket -lws2 &&
4323             network_extralibs="-lws2" ||
4324         { check_func_headers winsock2.h closesocket -lws2_32 &&
4325             network_extralibs="-lws2_32"; } || disable winsock2_h network
4326         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4327         check_type ws2tcpip.h socklen_t
4328         check_type ws2tcpip.h "struct addrinfo"
4329         check_type ws2tcpip.h "struct group_source_req"
4330         check_type ws2tcpip.h "struct ip_mreq_source"
4331         check_type ws2tcpip.h "struct ipv6_mreq"
4332         check_type winsock2.h "struct pollfd"
4333         check_type ws2tcpip.h "struct sockaddr_in6"
4334         check_type ws2tcpip.h "struct sockaddr_storage"
4335         check_struct winsock2.h "struct sockaddr" sa_len
4336     else
4337         disable network
4338     fi
4339 fi
4340
4341 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4342 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4343
4344 check_func  access
4345 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4346 check_func  fcntl
4347 check_func  fork
4348 check_func_headers stdlib.h getenv
4349 check_func  gethrtime
4350 check_func  getopt
4351 check_func  getrusage
4352 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4353 check_func  gettimeofday
4354 check_func  isatty
4355 check_func  localtime_r
4356 check_func  ${malloc_prefix}memalign            && enable memalign
4357 check_func  mkstemp
4358 check_func  mmap
4359 check_func  mprotect
4360 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4361 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4362 check_func  setrlimit
4363 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4364 check_func  strerror_r
4365 check_func  sched_getaffinity
4366 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4367 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4368 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4369 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4370 check_builtin sarestart signal.h "SA_RESTART"
4371 check_func  sysconf
4372 check_func  sysctl
4373 check_func  usleep
4374 check_func_headers conio.h kbhit
4375 check_func_headers windows.h PeekNamedPipe
4376 check_func_headers io.h setmode
4377 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4378 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4379 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4380 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4381 check_func_headers windows.h GetProcessAffinityMask
4382 check_func_headers windows.h GetProcessTimes
4383 check_func_headers windows.h GetSystemTimeAsFileTime
4384 check_func_headers windows.h MapViewOfFile
4385 check_func_headers windows.h SetConsoleTextAttribute
4386 check_func_headers windows.h Sleep
4387 check_func_headers windows.h VirtualAlloc
4388 check_func_headers glob.h glob
4389 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4390
4391 check_header cl/cl.h
4392 check_header direct.h
4393 check_header dlfcn.h
4394 check_header dxva.h
4395 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4396 check_header io.h
4397 check_header libcrystalhd/libcrystalhd_if.h
4398 check_header malloc.h
4399 check_header poll.h
4400 check_header sys/mman.h
4401 check_header sys/param.h
4402 check_header sys/resource.h
4403 check_header sys/select.h
4404 check_header sys/time.h
4405 check_header sys/un.h
4406 check_header termios.h
4407 check_header unistd.h
4408 check_header vdpau/vdpau.h
4409 check_header vdpau/vdpau_x11.h
4410 check_header VideoDecodeAcceleration/VDADecoder.h
4411 check_header windows.h
4412 check_header X11/extensions/XvMClib.h
4413 check_header asm/types.h
4414
4415 if ! disabled w32threads && ! enabled pthreads; then
4416     check_func_headers "windows.h process.h" _beginthreadex &&
4417         enable w32threads || disable w32threads
4418 fi
4419
4420 # check for some common methods of building with pthread support
4421 # do this before the optional library checks as some of them require pthreads
4422 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4423     enable pthreads
4424     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4425         add_cflags -pthread
4426         add_extralibs -pthread
4427     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4428         add_cflags -pthreads
4429         add_extralibs -pthreads
4430     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4431         add_extralibs -lpthreadGC2
4432     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4433         :
4434     elif ! check_func pthread_join && ! check_func pthread_create; then
4435         disable pthreads
4436     fi
4437     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4438 fi
4439
4440 for thread in $THREADS_LIST; do
4441     if enabled $thread; then
4442         test -n "$thread_type" &&
4443             die "ERROR: Only one thread type must be selected." ||
4444             thread_type="$thread"
4445     fi
4446 done
4447
4448 if enabled pthreads; then
4449   check_func pthread_cancel
4450 fi
4451
4452 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4453 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4454
4455 check_lib math.h sin -lm && LIBM="-lm"
4456 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4457
4458 atan2f_args=2
4459 ldexpf_args=2
4460 powf_args=2
4461
4462 for func in $MATH_FUNCS; do
4463     eval check_mathfunc $func \${${func}_args:-1}
4464 done
4465
4466 # these are off by default, so fail if requested and not available
4467 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4468                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4469                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4470 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4471 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4472 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4473 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4474 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4475 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4476 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4477 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4478 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4479 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4480                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4481                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4482 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4483 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4484 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4485 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"
4486 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4487 enabled libfreetype       && require_libfreetype
4488 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4489 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4490                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4491                                done || die "ERROR: libgsm not found"; }
4492 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4493 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4494 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4495 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4496 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4497 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4498 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4499 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4500                                check_lib openjpeg.h opj_version -lopenjpeg ||
4501                                die "ERROR: libopenjpeg not found"; }
4502 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4503 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4504 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4505 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4506 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4507 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4508 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4509 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4510 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4511 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4512     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4513     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4514 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4515 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4516                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4517                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4518 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4519 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4520 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4521 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4522 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4523 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4524 enabled libvpx            && {
4525     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4526                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4527     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 ||
4528                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4529     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4530     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; } }
4531 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4532 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4533 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4534                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4535                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4536 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4537                              { check_cpp_condition x265.h "X265_BUILD >= 7" ||
4538                                die "ERROR: libx265 version must be >= 7."; }
4539 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4540 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4541 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4542 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4543 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4544                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4545                                die "ERROR: openal not found"; } &&
4546                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4547                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4548 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4549                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4550                                die "ERROR: opencl not found"; } &&
4551                              { ! enabled_any w32threads os2threads ||
4552                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4553                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4554                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4555                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4556 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4557                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4558                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4559                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4560                                die "ERROR: opengl not found."
4561                              }
4562 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4563                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4564                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4565                                die "ERROR: openssl not found"; }
4566
4567 if enabled gnutls; then
4568     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4569     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4570 fi
4571
4572 # libdc1394 check
4573 if enabled libdc1394; then
4574     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4575         enable libdc1394_2; } ||
4576     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4577         enable libdc1394_1; } ||
4578     die "ERROR: No version of libdc1394 found "
4579 fi
4580
4581 SDL_CONFIG="${cross_prefix}sdl-config"
4582 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4583     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4584     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4585     enable sdl
4586 else
4587   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4588     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4589     sdl_libs=$("${SDL_CONFIG}" --libs)
4590     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4591     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4592     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4593     enable sdl
4594   fi
4595 fi
4596 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4597
4598 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4599 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4600 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4601 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4602 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4603
4604 check_header linux/fb.h
4605 check_header linux/videodev.h
4606 check_header linux/videodev2.h
4607 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4608
4609 check_header sys/videoio.h
4610
4611 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4612 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4613 # w32api 3.12 had it defined wrong
4614 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4615
4616 check_type "dshow.h" IBaseFilter
4617
4618 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4619 { check_header dev/bktr/ioctl_meteor.h &&
4620   check_header dev/bktr/ioctl_bt848.h; } ||
4621 { check_header machine/ioctl_meteor.h &&
4622   check_header machine/ioctl_bt848.h; } ||
4623 { check_header dev/video/meteor/ioctl_meteor.h &&
4624   check_header dev/video/bktr/ioctl_bt848.h; } ||
4625 check_header dev/ic/bt8xx.h
4626
4627 check_header sndio.h
4628 if check_struct sys/soundcard.h audio_buf_info bytes; then
4629     enable_safe sys/soundcard.h
4630 else
4631     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4632     #include <sys/soundcard.h>
4633     audio_buf_info abc;
4634 EOF
4635 fi
4636 check_header soundcard.h
4637
4638 enabled_any alsa_indev alsa_outdev &&
4639     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4640
4641 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4642     check_func jack_port_get_latency_range -ljack
4643
4644 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4645
4646 if enabled libcdio; then
4647     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4648     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4649     die "ERROR: No usable libcdio/cdparanoia found"
4650 fi
4651
4652 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4653
4654 enabled x11grab                                           &&
4655 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4656 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4657 { enabled xlib || die "ERROR: Xlib not found"; }
4658
4659 enabled vaapi &&
4660     check_lib va/va.h vaInitialize -lva ||
4661     disable vaapi
4662
4663 enabled vdpau &&
4664     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4665     disable vdpau
4666
4667 enabled vdpau && enabled xlib &&
4668     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4669     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
4670     enable vdpau_x11
4671
4672 # Funny iconv installations are not unusual, so check it after all flags have been set
4673 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4674
4675 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4676
4677 # add some useful compiler flags if supported
4678 check_cflags -Wdeclaration-after-statement
4679 check_cflags -Wall
4680 check_cflags -Wdisabled-optimization
4681 check_cflags -Wpointer-arith
4682 check_cflags -Wredundant-decls
4683 check_cflags -Wwrite-strings
4684 check_cflags -Wtype-limits
4685 check_cflags -Wundef
4686 check_cflags -Wmissing-prototypes
4687 check_cflags -Wno-pointer-to-int-cast
4688 check_cflags -Wstrict-prototypes
4689 enabled extra_warnings && check_cflags -Winline
4690
4691 check_disable_warning(){
4692     warning_flag=-W${1#-Wno-}
4693     test_cflags $warning_flag && add_cflags $1
4694 }
4695
4696 check_disable_warning -Wno-parentheses
4697 check_disable_warning -Wno-switch
4698 check_disable_warning -Wno-format-zero-length
4699 check_disable_warning -Wno-pointer-sign
4700
4701 # add some linker flags
4702 check_ldflags -Wl,--warn-common
4703 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4704 enabled rpath && add_ldflags -Wl,-rpath=$libdir
4705 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4706
4707 # add some strip flags
4708 # -wN '..@*' is more selective than -x, but not available everywhere.
4709 check_stripflags -wN \'..@*\' || check_stripflags -x
4710
4711 enabled neon_clobber_test &&
4712     check_ldflags -Wl,--wrap,avcodec_open2              \
4713                   -Wl,--wrap,avcodec_decode_audio4      \
4714                   -Wl,--wrap,avcodec_decode_video2      \
4715                   -Wl,--wrap,avcodec_decode_subtitle2   \
4716                   -Wl,--wrap,avcodec_encode_audio2      \
4717                   -Wl,--wrap,avcodec_encode_video2      \
4718                   -Wl,--wrap,avcodec_encode_subtitle    \
4719                   -Wl,--wrap,swr_convert                \
4720                   -Wl,--wrap,avresample_convert ||
4721     disable neon_clobber_test
4722
4723 enabled xmm_clobber_test &&
4724     check_ldflags -Wl,--wrap,avcodec_open2              \
4725                   -Wl,--wrap,avcodec_decode_audio4      \
4726                   -Wl,--wrap,avcodec_decode_video2      \
4727                   -Wl,--wrap,avcodec_decode_subtitle2   \
4728                   -Wl,--wrap,avcodec_encode_audio2      \
4729                   -Wl,--wrap,avcodec_encode_video       \
4730                   -Wl,--wrap,avcodec_encode_video2      \
4731                   -Wl,--wrap,avcodec_encode_subtitle    \
4732                   -Wl,--wrap,swr_convert                \
4733                   -Wl,--wrap,avresample_convert         \
4734                   -Wl,--wrap,sws_scale ||
4735     disable xmm_clobber_test
4736
4737 echo "X{};" > $TMPV
4738 if test_ldflags -Wl,--version-script,$TMPV; then
4739     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4740     check_cc <<EOF && enable symver_asm_label
4741 void ff_foo(void) __asm__ ("av_foo@VERSION");
4742 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4743 EOF
4744     check_cc <<EOF && enable symver_gnu_asm
4745 __asm__(".symver ff_foo,av_foo@VERSION");
4746 void ff_foo(void) {}
4747 EOF
4748 fi
4749
4750 if [ -z "$optflags" ]; then
4751     if enabled small; then
4752         optflags=$cflags_size
4753     elif enabled optimizations; then
4754         optflags=$cflags_speed
4755     else
4756         optflags=$cflags_noopt
4757     fi
4758 fi
4759
4760 check_optflags(){
4761     check_cflags "$@"
4762     enabled lto && check_ldflags "$@"
4763 }
4764
4765
4766 if enabled lto; then
4767     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4768     check_cflags  -flto
4769     check_ldflags -flto $cpuflags
4770 fi
4771
4772 check_optflags $optflags
4773 check_optflags -fno-math-errno
4774 check_optflags -fno-signed-zeros
4775
4776 enabled ftrapv && check_cflags -ftrapv
4777
4778 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4779 int x;
4780 EOF
4781
4782
4783 if enabled icc; then
4784     # Just warnings, no remarks
4785     check_cflags -w1
4786     # -wd: Disable following warnings
4787     # 144, 167, 556: -Wno-pointer-sign
4788     # 188: enumerated type mixed with another type
4789     # 1292: attribute "foo" ignored
4790     # 1419: external declaration in primary source file
4791     # 10006: ignoring unknown option -fno-signed-zeros
4792     # 10148: ignoring unknown option -Wno-parentheses
4793     # 10156: ignoring option '-W'; no argument required
4794     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4795     # 11030: Warning unknown option --as-needed
4796     # 10156: ignoring option '-export'; no argument required