x86: add detection for FMA3 instruction set
[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   --enable-vda             enable VDA code
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     filtering_audio_example
1252     filtering_video_example
1253     metadata_example
1254     muxing_example
1255     remuxing_example
1256     resampling_audio_example
1257     scaling_video_example
1258     transcode_aac_example
1259 "
1260
1261 EXTERNAL_LIBRARY_LIST="
1262     avisynth
1263     bzlib
1264     crystalhd
1265     decklink
1266     fontconfig
1267     frei0r
1268     gnutls
1269     iconv
1270     ladspa
1271     libaacplus
1272     libass
1273     libbluray
1274     libcaca
1275     libcdio
1276     libcelt
1277     libdc1394
1278     libfaac
1279     libfdk_aac
1280     libflite
1281     libfreetype
1282     libgme
1283     libgsm
1284     libiec61883
1285     libilbc
1286     libmodplug
1287     libmp3lame
1288     libnut
1289     libopencore_amrnb
1290     libopencore_amrwb
1291     libopencv
1292     libopenjpeg
1293     libopus
1294     libpulse
1295     libquvi
1296     librtmp
1297     libschroedinger
1298     libshine
1299     libsoxr
1300     libspeex
1301     libssh
1302     libstagefright_h264
1303     libtheora
1304     libtwolame
1305     libutvideo
1306     libv4l2
1307     libvidstab
1308     libvo_aacenc
1309     libvo_amrwbenc
1310     libvorbis
1311     libvpx
1312     libwavpack
1313     libwebp
1314     libx264
1315     libx265
1316     libxavs
1317     libxvid
1318     libzmq
1319     libzvbi
1320     openal
1321     opencl
1322     opengl
1323     openssl
1324     x11grab
1325     zlib
1326 "
1327
1328 DOCUMENT_LIST="
1329     doc
1330     htmlpages
1331     manpages
1332     podpages
1333     txtpages
1334 "
1335
1336 HWACCEL_LIST="
1337     dxva2
1338     vaapi
1339     vda
1340     vdpau
1341     xvmc
1342 "
1343
1344 LIBRARY_LIST="
1345     avcodec
1346     avdevice
1347     avfilter
1348     avformat
1349     avresample
1350     avutil
1351     postproc
1352     swresample
1353     swscale
1354 "
1355
1356 PROGRAM_LIST="
1357     ffplay
1358     ffprobe
1359     ffserver
1360     ffmpeg
1361 "
1362
1363 CONFIG_LIST="
1364     $COMPONENT_LIST
1365     $DOCUMENT_LIST
1366     $EXAMPLE_LIST
1367     $EXTERNAL_LIBRARY_LIST
1368     $HWACCEL_LIST
1369     $LIBRARY_LIST
1370     $PROGRAM_LIST
1371     dct
1372     dwt
1373     error_resilience
1374     fast_unaligned
1375     fft
1376     ftrapv
1377     gpl
1378     gray
1379     hardcoded_tables
1380     incompatible_libav_abi
1381     incompatible_fork_abi
1382     lsp
1383     lzo
1384     mdct
1385     memalign_hack
1386     memory_poisoning
1387     neon_clobber_test
1388     network
1389     nonfree
1390     pic
1391     raise_major
1392     rdft
1393     runtime_cpudetect
1394     safe_bitstream_reader
1395     shared
1396     small
1397     sram
1398     static
1399     swscale_alpha
1400     thumb
1401     version3
1402     xmm_clobber_test
1403 "
1404
1405 THREADS_LIST='
1406     pthreads
1407     w32threads
1408     os2threads
1409 '
1410
1411 ATOMICS_LIST='
1412     atomics_gcc
1413     atomics_suncc
1414     atomics_win32
1415 '
1416
1417 ARCH_LIST='
1418     aarch64
1419     alpha
1420     arm
1421     avr32
1422     avr32_ap
1423     avr32_uc
1424     bfin
1425     ia64
1426     m68k
1427     mips
1428     mips64
1429     parisc
1430     ppc
1431     ppc64
1432     s390
1433     sh4
1434     sparc
1435     sparc64
1436     tilegx
1437     tilepro
1438     tomi
1439     x86
1440     x86_32
1441     x86_64
1442 '
1443
1444 ARCH_EXT_LIST_ARM='
1445     armv5te
1446     armv6
1447     armv6t2
1448     neon
1449     vfp
1450     vfpv3
1451 '
1452
1453 ARCH_EXT_LIST_X86='
1454     amd3dnow
1455     amd3dnowext
1456     avx
1457     avx2
1458     cpunop
1459     fma3
1460     fma4
1461     i686
1462     mmx
1463     mmxext
1464     sse
1465     sse2
1466     sse3
1467     sse4
1468     sse42
1469     ssse3
1470     xop
1471 '
1472
1473 ARCH_EXT_LIST="
1474     $ARCH_EXT_LIST_ARM
1475     $ARCH_EXT_LIST_X86
1476     altivec
1477     ppc4xx
1478     vis
1479     mipsfpu
1480     mips32r2
1481     mipsdspr1
1482     mipsdspr2
1483 "
1484
1485 HAVE_LIST_CMDLINE='
1486     inline_asm
1487     symver
1488     yasm
1489 '
1490
1491 HAVE_LIST_PUB='
1492     bigendian
1493     fast_unaligned
1494     incompatible_libav_abi
1495     incompatible_fork_abi
1496 '
1497
1498 MATH_FUNCS="
1499     atanf
1500     atan2f
1501     cbrt
1502     cbrtf
1503     cosf
1504     exp2
1505     exp2f
1506     expf
1507     isinf
1508     isnan
1509     ldexpf
1510     llrint
1511     llrintf
1512     log2
1513     log2f
1514     log10f
1515     lrint
1516     lrintf
1517     powf
1518     rint
1519     round
1520     roundf
1521     sinf
1522     trunc
1523     truncf
1524 "
1525
1526 HAVE_LIST="
1527     $ARCH_EXT_LIST
1528     $(add_suffix _external $ARCH_EXT_LIST)
1529     $(add_suffix _inline   $ARCH_EXT_LIST)
1530     $HAVE_LIST_CMDLINE
1531     $HAVE_LIST_PUB
1532     $THREADS_LIST
1533     $ATOMICS_LIST
1534     $MATH_FUNCS
1535     access
1536     aligned_malloc
1537     aligned_stack
1538     alsa_asoundlib_h
1539     altivec_h
1540     arpa_inet_h
1541     asm_mod_q
1542     asm_mod_y
1543     asm_types_h
1544     atomic_cas_ptr
1545     atomics_native
1546     attribute_may_alias
1547     attribute_packed
1548     cdio_paranoia_h
1549     cdio_paranoia_paranoia_h
1550     CL_cl_h
1551     clock_gettime
1552     closesocket
1553     CommandLineToArgvW
1554     CryptGenRandom
1555     dcbzl
1556     dev_bktr_ioctl_bt848_h
1557     dev_bktr_ioctl_meteor_h
1558     dev_ic_bt8xx_h
1559     dev_video_bktr_ioctl_bt848_h
1560     dev_video_meteor_ioctl_meteor_h
1561     direct_h
1562     dlfcn_h
1563     dlopen
1564     dos_paths
1565     dxva_h
1566     ebp_available
1567     ebx_available
1568     ES2_gl_h
1569     fast_64bit
1570     fast_clz
1571     fast_cmov
1572     fcntl
1573     fork
1574     getaddrinfo
1575     gethrtime
1576     getopt
1577     GetProcessAffinityMask
1578     GetProcessMemoryInfo
1579     GetProcessTimes
1580     GetSystemTimeAsFileTime
1581     getrusage
1582     getservbyport
1583     gettimeofday
1584     glob
1585     glXGetProcAddress
1586     gnu_as
1587     gnu_windres
1588     gsm_h
1589     ibm_asm
1590     inet_aton
1591     io_h
1592     inline_asm_labels
1593     isatty
1594     jack_port_get_latency_range
1595     kbhit
1596     ldbrx
1597     libc_msvcrt
1598     libdc1394_1
1599     libdc1394_2
1600     local_aligned_16
1601     local_aligned_8
1602     localtime_r
1603     loongson
1604     lzo1x_999_compress
1605     machine_ioctl_bt848_h
1606     machine_ioctl_meteor_h
1607     machine_rw_barrier
1608     makeinfo
1609     malloc_h
1610     MapViewOfFile
1611     memalign
1612     MemoryBarrier
1613     mkstemp
1614     mm_empty
1615     mmap
1616     mprotect
1617     nanosleep
1618     openjpeg_1_5_openjpeg_h
1619     OpenGL_gl3_h
1620     PeekNamedPipe
1621     perl
1622     pod2man
1623     poll_h
1624     posix_memalign
1625     pragma_deprecated
1626     pthread_cancel
1627     rdtsc
1628     rsync_contimeout
1629     sarestart
1630     sched_getaffinity
1631     sdl
1632     SetConsoleTextAttribute
1633     setmode
1634     setrlimit
1635     Sleep
1636     sndio_h
1637     socklen_t
1638     soundcard_h
1639     strerror_r
1640     struct_addrinfo
1641     struct_group_source_req
1642     struct_ip_mreq_source
1643     struct_ipv6_mreq
1644     struct_pollfd
1645     struct_rusage_ru_maxrss
1646     struct_sctp_event_subscribe
1647     struct_sockaddr_in6
1648     struct_sockaddr_sa_len
1649     struct_sockaddr_storage
1650     struct_stat_st_mtim_tv_nsec
1651     struct_v4l2_frmivalenum_discrete
1652     symver_asm_label
1653     symver_gnu_asm
1654     sync_val_compare_and_swap
1655     sysconf
1656     sysctl
1657     sys_mman_h
1658     sys_param_h
1659     sys_resource_h
1660     sys_select_h
1661     sys_soundcard_h
1662     sys_time_h
1663     sys_un_h
1664     sys_videoio_h
1665     termios_h
1666     texi2html
1667     threads
1668     unistd_h
1669     usleep
1670     vdpau_x11
1671     vfp_args
1672     VirtualAlloc
1673     wglGetProcAddress
1674     windows_h
1675     winsock2_h
1676     xform_asm
1677     xlib
1678     xmm_clobbers
1679 "
1680
1681 # options emitted with CONFIG_ prefix but not available on the command line
1682 CONFIG_EXTRA="
1683     aandcttables
1684     ac3dsp
1685     audio_frame_queue
1686     dsputil
1687     exif
1688     frame_thread_encoder
1689     gcrypt
1690     golomb
1691     gplv3
1692     h263dsp
1693     h264chroma
1694     h264dsp
1695     h264pred
1696     h264qpel
1697     hpeldsp
1698     huffman
1699     intrax8
1700     lgplv3
1701     llviddsp
1702     lpc
1703     mpegaudio
1704     mpegaudiodsp
1705     mpegvideo
1706     mpegvideoenc
1707     nettle
1708     rangecoder
1709     riffdec
1710     riffenc
1711     rtpdec
1712     rtpenc_chain
1713     sinewin
1714     videodsp
1715     vp3dsp
1716 "
1717
1718 CMDLINE_SELECT="
1719     $ARCH_EXT_LIST
1720     $CONFIG_LIST
1721     $HAVE_LIST_CMDLINE
1722     $THREADS_LIST
1723     asm
1724     cross_compile
1725     debug
1726     extra_warnings
1727     logging
1728     lto
1729     optimizations
1730     rpath
1731     stripping
1732 "
1733
1734 PATHS_LIST='
1735     bindir
1736     datadir
1737     docdir
1738     incdir
1739     libdir
1740     mandir
1741     prefix
1742     shlibdir
1743 '
1744
1745 CMDLINE_SET="
1746     $PATHS_LIST
1747     ar
1748     arch
1749     as
1750     assert_level
1751     build_suffix
1752     cc
1753     cpu
1754     cross_prefix
1755     cxx
1756     dep_cc
1757     extra_version
1758     host_cc
1759     host_cflags
1760     host_ld
1761     host_ldflags
1762     host_libs
1763     host_os
1764     install
1765     ld
1766     logfile
1767     malloc_prefix
1768     nm
1769     optflags
1770     pkg_config
1771     progs_suffix
1772     random_seed
1773     samples
1774     strip
1775     sysinclude
1776     sysroot
1777     target_exec
1778     target_os
1779     target_path
1780     target_samples
1781     tempprefix
1782     toolchain
1783     valgrind
1784     yasmexe
1785 "
1786
1787 CMDLINE_APPEND="
1788     extra_cflags
1789     extra_cxxflags
1790     host_cppflags
1791 "
1792
1793 # code dependency declarations
1794
1795 # architecture extensions
1796
1797 armv5te_deps="arm"
1798 armv6_deps="arm"
1799 armv6t2_deps="arm"
1800 neon_deps_any="aarch64 arm"
1801 vfp_deps_any="aarch64 arm"
1802 vfpv3_deps="vfp"
1803
1804 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1805
1806 mipsfpu_deps="mips"
1807 mips32r2_deps="mips"
1808 mipsdspr1_deps="mips"
1809 mipsdspr2_deps="mips"
1810
1811 altivec_deps="ppc"
1812 ppc4xx_deps="ppc"
1813
1814 vis_deps="sparc"
1815
1816 cpunop_deps="i686"
1817 x86_64_select="i686"
1818 x86_64_suggest="fast_cmov"
1819
1820 amd3dnow_deps="mmx"
1821 amd3dnowext_deps="amd3dnow"
1822 i686_deps="x86"
1823 mmx_deps="x86"
1824 mmxext_deps="mmx"
1825 sse_deps="mmxext"
1826 sse2_deps="sse"
1827 sse3_deps="sse2"
1828 ssse3_deps="sse3"
1829 sse4_deps="ssse3"
1830 sse42_deps="sse4"
1831 avx_deps="sse42"
1832 xop_deps="avx"
1833 fma3_deps="avx"
1834 fma4_deps="avx"
1835 avx2_deps="avx"
1836
1837 mmx_external_deps="yasm"
1838 mmx_inline_deps="inline_asm"
1839 mmx_suggest="mmx_external mmx_inline"
1840
1841 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1842     eval dep=\$${ext}_deps
1843     eval ${ext}_external_deps='"${dep}_external"'
1844     eval ${ext}_inline_deps='"${dep}_inline"'
1845     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1846 done
1847
1848 aligned_stack_if_any="aarch64 ppc x86"
1849 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1850 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1851 fast_unaligned_if_any="aarch64 ppc x86"
1852
1853 need_memalign="altivec neon sse"
1854
1855 # system capabilities
1856 log2_deps="!libc_msvcrt"
1857
1858 symver_if_any="symver_asm_label symver_gnu_asm"
1859
1860 # threading support
1861 atomics_gcc_if="sync_val_compare_and_swap"
1862 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1863 atomics_win32_if="MemoryBarrier"
1864 atomics_native_if_any="$ATOMICS_LIST"
1865 w32threads_deps="atomics_native"
1866 threads_if_any="$THREADS_LIST"
1867
1868 # subsystems
1869 dct_select="rdft"
1870 error_resilience_select="dsputil"
1871 frame_thread_encoder_deps="encoders threads"
1872 lpc_select="dsputil"
1873 mdct_select="fft"
1874 rdft_select="fft"
1875 mpegaudio_select="mpegaudiodsp"
1876 mpegaudiodsp_select="dct"
1877 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1878 mpegvideoenc_select="mpegvideo"
1879
1880 # decoders / encoders
1881 aac_decoder_select="mdct sinewin"
1882 aac_encoder_select="audio_frame_queue mdct sinewin"
1883 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1884 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1885 ac3_encoder_select="mdct ac3dsp dsputil"
1886 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1887 aic_decoder_select="dsputil golomb"
1888 alac_encoder_select="lpc"
1889 als_decoder_select="dsputil"
1890 amrnb_decoder_select="lsp"
1891 amrwb_decoder_select="lsp"
1892 amv_decoder_select="dsputil hpeldsp exif"
1893 amv_encoder_select="aandcttables"
1894 ape_decoder_select="dsputil"
1895 asv1_decoder_select="dsputil"
1896 asv1_encoder_select="dsputil"
1897 asv2_decoder_select="dsputil"
1898 asv2_encoder_select="dsputil"
1899 atrac1_decoder_select="mdct sinewin"
1900 atrac3_decoder_select="mdct"
1901 atrac3p_decoder_select="mdct sinewin"
1902 avrn_decoder_select="exif"
1903 bink_decoder_select="dsputil hpeldsp"
1904 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1905 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1906 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1907 cllc_decoder_select="dsputil"
1908 comfortnoise_encoder_select="lpc"
1909 cook_decoder_select="dsputil mdct sinewin"
1910 cscd_decoder_select="lzo"
1911 cscd_decoder_suggest="zlib"
1912 dca_decoder_select="mdct"
1913 dirac_decoder_select="dsputil dwt golomb videodsp"
1914 dnxhd_decoder_select="dsputil"
1915 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1916 dvvideo_decoder_select="dsputil"
1917 dvvideo_encoder_select="dsputil"
1918 dxa_decoder_select="zlib"
1919 eac3_decoder_select="ac3_decoder"
1920 eac3_encoder_select="ac3_encoder"
1921 eamad_decoder_select="aandcttables dsputil mpegvideo"
1922 eatgq_decoder_select="aandcttables"
1923 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1924 exr_decoder_select="zlib"
1925 ffv1_decoder_select="dsputil golomb rangecoder"
1926 ffv1_encoder_select="dsputil rangecoder"
1927 ffvhuff_decoder_select="dsputil llviddsp"
1928 ffvhuff_encoder_select="dsputil huffman llviddsp"
1929 fic_decoder_select="dsputil golomb"
1930 flac_decoder_select="golomb"
1931 flac_encoder_select="dsputil golomb lpc"
1932 flashsv_decoder_select="zlib"
1933 flashsv_encoder_select="zlib"
1934 flashsv2_encoder_select="zlib"
1935 flashsv2_decoder_select="zlib"
1936 flv_decoder_select="h263_decoder"
1937 flv_encoder_select="h263_encoder"
1938 fourxm_decoder_select="dsputil"
1939 fraps_decoder_select="dsputil huffman"
1940 g2m_decoder_select="dsputil zlib"
1941 g729_decoder_select="dsputil"
1942 h261_decoder_select="error_resilience mpegvideo"
1943 h261_encoder_select="aandcttables mpegvideoenc"
1944 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1945 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1946 h263i_decoder_select="h263_decoder"
1947 h263p_encoder_select="h263_encoder"
1948 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1949 h264_decoder_suggest="error_resilience"
1950 hevc_decoder_select="dsputil golomb videodsp"
1951 huffyuv_decoder_select="dsputil llviddsp"
1952 huffyuv_encoder_select="dsputil huffman llviddsp"
1953 iac_decoder_select="dsputil fft mdct sinewin"
1954 imc_decoder_select="dsputil fft mdct sinewin"
1955 indeo3_decoder_select="hpeldsp"
1956 interplay_video_decoder_select="hpeldsp"
1957 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1958 jpegls_encoder_select="golomb"
1959 jv_decoder_select="dsputil"
1960 lagarith_decoder_select="dsputil"
1961 ljpeg_encoder_select="aandcttables mpegvideoenc"
1962 loco_decoder_select="golomb"
1963 mdec_decoder_select="dsputil error_resilience mpegvideo"
1964 metasound_decoder_select="lsp mdct sinewin"
1965 mimic_decoder_select="dsputil hpeldsp"
1966 mjpeg_decoder_select="dsputil hpeldsp exif"
1967 mjpegb_decoder_select="dsputil hpeldsp exif"
1968 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1969 mlp_decoder_select="dsputil mlp_parser"
1970 motionpixels_decoder_select="dsputil"
1971 mp1_decoder_select="mpegaudio"
1972 mp1float_decoder_select="mpegaudio"
1973 mp2_decoder_select="mpegaudio"
1974 mp2float_decoder_select="mpegaudio"
1975 mp3_decoder_select="mpegaudio"
1976 mp3adu_decoder_select="mpegaudio"
1977 mp3adufloat_decoder_select="mpegaudio"
1978 mp3float_decoder_select="mpegaudio"
1979 mp3on4_decoder_select="mpegaudio"
1980 mp3on4float_decoder_select="mpegaudio"
1981 mpc7_decoder_select="dsputil mpegaudiodsp"
1982 mpc8_decoder_select="dsputil mpegaudiodsp"
1983 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1984 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1985 mpeg1video_decoder_select="error_resilience mpegvideo"
1986 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
1987 mpeg2video_decoder_select="error_resilience mpegvideo"
1988 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
1989 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1990 mpeg4_encoder_select="h263_encoder"
1991 msmpeg4v1_decoder_select="h263_decoder"
1992 msmpeg4v2_decoder_select="h263_decoder"
1993 msmpeg4v2_encoder_select="h263_encoder"
1994 msmpeg4v3_decoder_select="h263_decoder"
1995 msmpeg4v3_encoder_select="h263_encoder"
1996 mss2_decoder_select="error_resilience vc1_decoder"
1997 mxpeg_decoder_select="dsputil hpeldsp exif"
1998 nellymoser_decoder_select="mdct sinewin"
1999 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2000 nuv_decoder_select="dsputil lzo"
2001 png_decoder_select="zlib"
2002 png_encoder_select="dsputil zlib"
2003 prores_decoder_select="dsputil"
2004 prores_encoder_select="dsputil"
2005 qcelp_decoder_select="lsp"
2006 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2007 ra_144_encoder_select="audio_frame_queue lpc"
2008 ralf_decoder_select="golomb"
2009 rtjpeg_decoder_select="dsputil"
2010 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2011 rv10_encoder_select="h263_encoder"
2012 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2013 rv20_encoder_select="h263_encoder"
2014 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2015 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2016 shorten_decoder_select="golomb"
2017 sipr_decoder_select="lsp"
2018 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2019 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2020 sonic_decoder_select="golomb rangecoder"
2021 sonic_encoder_select="golomb rangecoder"
2022 sonic_ls_encoder_select="golomb"
2023 sp5x_decoder_select="dsputil hpeldsp exif"
2024 svq1_decoder_select="hpeldsp"
2025 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2026 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
2027 svq3_decoder_suggest="error_resilience zlib"
2028 tak_decoder_select="dsputil"
2029 theora_decoder_select="vp3_decoder"
2030 tiff_decoder_suggest="zlib"
2031 tiff_encoder_suggest="zlib"
2032 thp_decoder_select="dsputil hpeldsp exif"
2033 truehd_decoder_select="mlp_parser"
2034 truemotion2_decoder_select="dsputil"
2035 truespeech_decoder_select="dsputil"
2036 tscc_decoder_select="zlib"
2037 twinvq_decoder_select="mdct lsp sinewin"
2038 utvideo_decoder_select="dsputil"
2039 utvideo_encoder_select="dsputil huffman"
2040 vble_decoder_select="dsputil"
2041 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2042 vc1image_decoder_select="vc1_decoder"
2043 vorbis_decoder_select="mdct"
2044 vorbis_encoder_select="mdct"
2045 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2046 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2047 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2048 vp6a_decoder_select="vp6_decoder"
2049 vp6f_decoder_select="vp6_decoder"
2050 vp8_decoder_select="h264pred videodsp"
2051 vp9_decoder_select="videodsp"
2052 webp_decoder_select="vp8_decoder"
2053 wmapro_decoder_select="mdct sinewin"
2054 wmav1_decoder_select="mdct sinewin"
2055 wmav1_encoder_select="mdct sinewin"
2056 wmav2_decoder_select="mdct sinewin"
2057 wmav2_encoder_select="mdct sinewin"
2058 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2059 wmv1_decoder_select="h263_decoder"
2060 wmv1_encoder_select="h263_encoder"
2061 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2062 wmv2_encoder_select="h263_encoder"
2063 wmv3_decoder_select="vc1_decoder"
2064 wmv3image_decoder_select="wmv3_decoder"
2065 zerocodec_decoder_select="zlib"
2066 zlib_decoder_select="zlib"
2067 zlib_encoder_select="zlib"
2068 zmbv_decoder_select="zlib"
2069 zmbv_encoder_select="zlib"
2070
2071 # hardware accelerators
2072 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2073 dxva2_deps="dxva2api_h"
2074 vaapi_deps="va_va_h"
2075 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2076 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2077 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2078 xvmc_deps="X11_extensions_XvMClib_h"
2079
2080 h263_vaapi_hwaccel_deps="vaapi"
2081 h263_vaapi_hwaccel_select="h263_decoder"
2082 h263_vdpau_hwaccel_deps="vdpau"
2083 h263_vdpau_hwaccel_select="h263_decoder"
2084 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2085 h264_dxva2_hwaccel_deps="dxva2"
2086 h264_dxva2_hwaccel_select="h264_decoder"
2087 h264_vaapi_hwaccel_deps="vaapi"
2088 h264_vaapi_hwaccel_select="h264_decoder"
2089 h264_vda_decoder_deps="vda"
2090 h264_vda_decoder_select="h264_decoder"
2091 h264_vda_hwaccel_deps="vda"
2092 h264_vda_hwaccel_select="h264_decoder"
2093 h264_vdpau_decoder_deps="vdpau"
2094 h264_vdpau_decoder_select="h264_decoder"
2095 h264_vdpau_hwaccel_deps="vdpau"
2096 h264_vdpau_hwaccel_select="h264_decoder"
2097 mpeg_vdpau_decoder_deps="vdpau"
2098 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2099 mpeg_xvmc_hwaccel_deps="xvmc"
2100 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2101 mpeg1_vdpau_decoder_deps="vdpau"
2102 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2103 mpeg1_vdpau_hwaccel_deps="vdpau"
2104 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2105 mpeg1_xvmc_hwaccel_deps="xvmc"
2106 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2107 mpeg2_crystalhd_decoder_select="crystalhd"
2108 mpeg2_dxva2_hwaccel_deps="dxva2"
2109 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2110 mpeg2_vaapi_hwaccel_deps="vaapi"
2111 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2112 mpeg2_vdpau_hwaccel_deps="vdpau"
2113 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2114 mpeg2_xvmc_hwaccel_deps="xvmc"
2115 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2116 mpeg4_crystalhd_decoder_select="crystalhd"
2117 mpeg4_vaapi_hwaccel_deps="vaapi"
2118 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2119 mpeg4_vdpau_decoder_deps="vdpau"
2120 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2121 mpeg4_vdpau_hwaccel_deps="vdpau"
2122 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2123 msmpeg4_crystalhd_decoder_select="crystalhd"
2124 vc1_crystalhd_decoder_select="crystalhd"
2125 vc1_dxva2_hwaccel_deps="dxva2"
2126 vc1_dxva2_hwaccel_select="vc1_decoder"
2127 vc1_vaapi_hwaccel_deps="vaapi"
2128 vc1_vaapi_hwaccel_select="vc1_decoder"
2129 vc1_vdpau_decoder_deps="vdpau"
2130 vc1_vdpau_decoder_select="vc1_decoder"
2131 vc1_vdpau_hwaccel_deps="vdpau"
2132 vc1_vdpau_hwaccel_select="vc1_decoder"
2133 wmv3_crystalhd_decoder_select="crystalhd"
2134 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2135 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2136 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2137 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2138
2139 # parsers
2140 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2141 hevc_parser_select="hevc_decoder"
2142 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2143 mpegvideo_parser_select="error_resilience mpegvideo"
2144 vc1_parser_select="mpegvideo"
2145
2146 # external libraries
2147 libaacplus_encoder_deps="libaacplus"
2148 libcelt_decoder_deps="libcelt"
2149 libfaac_encoder_deps="libfaac"
2150 libfaac_encoder_select="audio_frame_queue"
2151 libfdk_aac_decoder_deps="libfdk_aac"
2152 libfdk_aac_encoder_deps="libfdk_aac"
2153 libfdk_aac_encoder_select="audio_frame_queue"
2154 libgme_demuxer_deps="libgme"
2155 libgsm_decoder_deps="libgsm"
2156 libgsm_encoder_deps="libgsm"
2157 libgsm_ms_decoder_deps="libgsm"
2158 libgsm_ms_encoder_deps="libgsm"
2159 libilbc_decoder_deps="libilbc"
2160 libilbc_encoder_deps="libilbc"
2161 libmodplug_demuxer_deps="libmodplug"
2162 libmp3lame_encoder_deps="libmp3lame"
2163 libmp3lame_encoder_select="audio_frame_queue"
2164 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2165 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2166 libopencore_amrnb_encoder_select="audio_frame_queue"
2167 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2168 libopenjpeg_decoder_deps="libopenjpeg"
2169 libopenjpeg_encoder_deps="libopenjpeg"
2170 libopus_decoder_deps="libopus"
2171 libopus_encoder_deps="libopus"
2172 libopus_encoder_select="audio_frame_queue"
2173 libquvi_demuxer_deps="libquvi"
2174 libschroedinger_decoder_deps="libschroedinger"
2175 libschroedinger_encoder_deps="libschroedinger"
2176 libshine_encoder_deps="libshine"
2177 libshine_encoder_select="audio_frame_queue"
2178 libspeex_decoder_deps="libspeex"
2179 libspeex_encoder_deps="libspeex"
2180 libspeex_encoder_select="audio_frame_queue"
2181 libstagefright_h264_decoder_deps="libstagefright_h264"
2182 libtheora_encoder_deps="libtheora"
2183 libtwolame_encoder_deps="libtwolame"
2184 libvo_aacenc_encoder_deps="libvo_aacenc"
2185 libvo_aacenc_encoder_select="audio_frame_queue"
2186 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2187 libvorbis_decoder_deps="libvorbis"
2188 libvorbis_encoder_deps="libvorbis"
2189 libvorbis_encoder_select="audio_frame_queue"
2190 libvpx_vp8_decoder_deps="libvpx"
2191 libvpx_vp8_encoder_deps="libvpx"
2192 libvpx_vp9_decoder_deps="libvpx"
2193 libvpx_vp9_encoder_deps="libvpx"
2194 libwavpack_encoder_deps="libwavpack"
2195 libwebp_encoder_deps="libwebp"
2196 libx264_encoder_deps="libx264"
2197 libx264rgb_encoder_deps="libx264"
2198 libx265_encoder_deps="libx265"
2199 libxavs_encoder_deps="libxavs"
2200 libxvid_encoder_deps="libxvid"
2201 libutvideo_decoder_deps="libutvideo"
2202 libutvideo_encoder_deps="libutvideo"
2203 libzvbi_teletext_decoder_deps="libzvbi"
2204
2205 # demuxers / muxers
2206 ac3_demuxer_select="ac3_parser"
2207 asf_demuxer_select="riffdec"
2208 asf_muxer_select="riffenc"
2209 asf_stream_muxer_select="asf_muxer"
2210 avi_demuxer_select="riffdec"
2211 avi_muxer_select="riffenc"
2212 avisynth_demuxer_deps="avisynth"
2213 avisynth_demuxer_select="riffdec"
2214 caf_demuxer_select="riffdec"
2215 dirac_demuxer_select="dirac_parser"
2216 dts_demuxer_select="dca_parser"
2217 dtshd_demuxer_select="dca_parser"
2218 dxa_demuxer_select="riffdec"
2219 eac3_demuxer_select="ac3_parser"
2220 f4v_muxer_select="mov_muxer"
2221 flac_demuxer_select="flac_parser"
2222 hds_muxer_select="flv_muxer"
2223 hls_muxer_select="mpegts_muxer"
2224 ipod_muxer_select="mov_muxer"
2225 ismv_muxer_select="mov_muxer"
2226 libnut_demuxer_deps="libnut"
2227 libnut_muxer_deps="libnut"
2228 matroska_audio_muxer_select="matroska_muxer"
2229 matroska_demuxer_select="riffdec"
2230 matroska_demuxer_suggest="bzlib lzo zlib"
2231 matroska_muxer_select="riffenc"
2232 mmf_muxer_select="riffenc"
2233 mov_demuxer_select="riffdec"
2234 mov_demuxer_suggest="zlib"
2235 mov_muxer_select="riffenc rtpenc_chain"
2236 mp3_demuxer_select="mpegaudio_parser"
2237 mp4_muxer_select="mov_muxer"
2238 mpegts_muxer_select="adts_muxer latm_muxer"
2239 mpegtsraw_demuxer_select="mpegts_demuxer"
2240 mxf_d10_muxer_select="mxf_muxer"
2241 nut_muxer_select="riffenc"
2242 nuv_demuxer_select="riffdec"
2243 ogg_demuxer_select="golomb"
2244 psp_muxer_select="mov_muxer"
2245 rtp_demuxer_select="sdp_demuxer"
2246 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2247 rtsp_demuxer_select="http_protocol rtpdec"
2248 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2249 sap_demuxer_select="sdp_demuxer"
2250 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2251 sdp_demuxer_select="rtpdec"
2252 smoothstreaming_muxer_select="ismv_muxer"
2253 spdif_muxer_select="aac_parser"
2254 tak_demuxer_select="tak_parser"
2255 tg2_muxer_select="mov_muxer"
2256 tgp_muxer_select="mov_muxer"
2257 vobsub_demuxer_select="mpegps_demuxer"
2258 w64_demuxer_select="wav_demuxer"
2259 w64_muxer_select="wav_muxer"
2260 wav_demuxer_select="riffdec"
2261 wav_muxer_select="riffenc"
2262 webm_muxer_select="riffenc"
2263 wtv_demuxer_select="riffdec"
2264 wtv_muxer_select="riffenc"
2265 xmv_demuxer_select="riffdec"
2266 xwma_demuxer_select="riffdec"
2267
2268 # indevs / outdevs
2269 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2270 alsa_outdev_deps="alsa_asoundlib_h"
2271 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2272 caca_outdev_deps="libcaca"
2273 decklink_outdev_deps="decklink pthreads"
2274 decklink_outdev_extralibs="-lstdc++"
2275 dshow_indev_deps="IBaseFilter"
2276 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2277 dv1394_indev_deps="dv1394"
2278 dv1394_indev_select="dv_demuxer"
2279 fbdev_indev_deps="linux_fb_h"
2280 fbdev_outdev_deps="linux_fb_h"
2281 iec61883_indev_deps="libiec61883"
2282 jack_indev_deps="jack_jack_h sem_timedwait"
2283 lavfi_indev_deps="avfilter"
2284 libcdio_indev_deps="libcdio"
2285 libdc1394_indev_deps="libdc1394"
2286 libv4l2_indev_deps="libv4l2"
2287 openal_indev_deps="openal"
2288 opengl_outdev_deps="opengl"
2289 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2290 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2291 pulse_indev_deps="libpulse"
2292 pulse_outdev_deps="libpulse"
2293 sdl_outdev_deps="sdl"
2294 sndio_indev_deps="sndio_h"
2295 sndio_outdev_deps="sndio_h"
2296 v4l_indev_deps="linux_videodev_h"
2297 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2298 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2299 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2300 vfwcap_indev_extralibs="-lavicap32"
2301 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2302 xv_outdev_extralibs="-lXv -lX11 -lXext"
2303 x11grab_indev_deps="x11grab"
2304
2305 # protocols
2306 bluray_protocol_deps="libbluray"
2307 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2308 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2309 ffrtmpcrypt_protocol_select="tcp_protocol"
2310 ffrtmphttp_protocol_deps="!librtmp_protocol"
2311 ffrtmphttp_protocol_select="http_protocol"
2312 ftp_protocol_select="tcp_protocol"
2313 gopher_protocol_select="network"
2314 httpproxy_protocol_select="tcp_protocol"
2315 http_protocol_select="tcp_protocol"
2316 https_protocol_select="tls_protocol"
2317 librtmp_protocol_deps="librtmp"
2318 librtmpe_protocol_deps="librtmp"
2319 librtmps_protocol_deps="librtmp"
2320 librtmpt_protocol_deps="librtmp"
2321 librtmpte_protocol_deps="librtmp"
2322 libssh_protocol_deps="libssh"
2323 mmsh_protocol_select="http_protocol"
2324 mmst_protocol_select="network"
2325 rtmp_protocol_deps="!librtmp_protocol"
2326 rtmp_protocol_select="tcp_protocol"
2327 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2328 rtmps_protocol_deps="!librtmp_protocol"
2329 rtmps_protocol_select="tls_protocol"
2330 rtmpt_protocol_select="ffrtmphttp_protocol"
2331 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2332 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2333 rtp_protocol_select="udp_protocol"
2334 sctp_protocol_deps="struct_sctp_event_subscribe"
2335 sctp_protocol_select="network"
2336 srtp_protocol_select="rtp_protocol"
2337 tcp_protocol_select="network"
2338 tls_protocol_deps_any="openssl gnutls"
2339 tls_protocol_select="tcp_protocol"
2340 udp_protocol_select="network"
2341 unix_protocol_deps="sys_un_h"
2342 unix_protocol_select="network"
2343
2344 # filters
2345 aconvert_filter_deps="swresample"
2346 amovie_filter_deps="avcodec avformat"
2347 aresample_filter_deps="swresample"
2348 ass_filter_deps="libass"
2349 asyncts_filter_deps="avresample"
2350 atempo_filter_deps="avcodec"
2351 atempo_filter_select="rdft"
2352 azmq_filter_deps="libzmq"
2353 blackframe_filter_deps="gpl"
2354 boxblur_filter_deps="gpl"
2355 colormatrix_filter_deps="gpl"
2356 cropdetect_filter_deps="gpl"
2357 dctdnoiz_filter_deps="avcodec"
2358 dctdnoiz_filter_select="dct"
2359 delogo_filter_deps="gpl"
2360 deshake_filter_deps="avcodec"
2361 deshake_filter_select="dsputil"
2362 drawtext_filter_deps="libfreetype"
2363 ebur128_filter_deps="gpl"
2364 flite_filter_deps="libflite"
2365 frei0r_filter_deps="frei0r dlopen"
2366 frei0r_filter_extralibs='$ldl'
2367 frei0r_src_filter_deps="frei0r dlopen"
2368 frei0r_src_filter_extralibs='$ldl'
2369 geq_filter_deps="gpl"
2370 histeq_filter_deps="gpl"
2371 hqdn3d_filter_deps="gpl"
2372 interlace_filter_deps="gpl"
2373 kerndeint_filter_deps="gpl"
2374 ladspa_filter_deps="ladspa dlopen"
2375 mcdeint_filter_deps="avcodec gpl"
2376 movie_filter_deps="avcodec avformat"
2377 mp_filter_deps="gpl avcodec swscale inline_asm"
2378 mpdecimate_filter_deps="gpl avcodec"
2379 mptestsrc_filter_deps="gpl"
2380 negate_filter_deps="lut_filter"
2381 perspective_filter_deps="gpl"
2382 resample_filter_deps="avresample"
2383 ocv_filter_deps="libopencv"
2384 owdenoise_filter_deps="gpl"
2385 pan_filter_deps="swresample"
2386 phase_filter_deps="gpl"
2387 pp_filter_deps="gpl postproc"
2388 pullup_filter_deps="gpl"
2389 removelogo_filter_deps="avcodec avformat swscale"
2390 sab_filter_deps="gpl swscale"
2391 scale_filter_deps="swscale"
2392 smartblur_filter_deps="gpl swscale"
2393 showspectrum_filter_deps="avcodec"
2394 showspectrum_filter_select="rdft"
2395 spp_filter_deps="gpl avcodec"
2396 spp_filter_select="fft"
2397 stereo3d_filter_deps="gpl"
2398 subtitles_filter_deps="avformat avcodec libass"
2399 super2xsai_filter_deps="gpl"
2400 tinterlace_filter_deps="gpl"
2401 vidstabdetect_filter_deps="libvidstab"
2402 vidstabtransform_filter_deps="libvidstab"
2403 pixfmts_super2xsai_test_deps="super2xsai_filter"
2404 tinterlace_merge_test_deps="tinterlace_filter"
2405 tinterlace_pad_test_deps="tinterlace_filter"
2406 zmq_filter_deps="libzmq"
2407
2408 # examples
2409 avio_reading="avformat avcodec avutil"
2410 avcodec_example_deps="avcodec avutil"
2411 demuxing_decoding_example_deps="avcodec avformat avutil"
2412 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2413 filtering_video_example_deps="avfilter avcodec avformat avutil"
2414 metadata_example_deps="avformat avutil"
2415 muxing_example_deps="avcodec avformat avutil swscale"
2416 remuxing_example_deps="avcodec avformat avutil"
2417 resampling_audio_example_deps="avutil swresample"
2418 scaling_video_example_deps="avutil swscale"
2419 transcode_aac_example_deps="avcodec avformat swresample"
2420
2421 # libraries
2422 avcodec_deps="avutil"
2423 avdevice_deps="avutil avcodec avformat"
2424 avfilter_deps="avutil"
2425 avformat_deps="avutil avcodec"
2426 avresample_deps="avutil"
2427 postproc_deps="avutil gpl"
2428 swscale_deps="avutil"
2429
2430 # programs
2431 ffmpeg_deps="avcodec avfilter avformat swresample"
2432 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2433                null_filter
2434                setpts_filter trim_filter"
2435 ffplay_deps="avcodec avformat swscale swresample sdl"
2436 ffplay_libs='$sdl_libs'
2437 ffplay_select="rdft crop_filter"
2438 ffprobe_deps="avcodec avformat"
2439 ffserver_deps="avformat fork sarestart"
2440 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2441
2442 # documentation
2443 podpages_deps="perl"
2444 manpages_deps="perl pod2man"
2445 htmlpages_deps="perl texi2html"
2446 txtpages_deps="perl makeinfo"
2447 doc_deps_any="manpages htmlpages podpages txtpages"
2448
2449 # default parameters
2450
2451 logfile="config.log"
2452
2453 # installation paths
2454 prefix_default="/usr/local"
2455 bindir_default='${prefix}/bin'
2456 datadir_default='${prefix}/share/ffmpeg'
2457 docdir_default='${prefix}/share/doc/ffmpeg'
2458 incdir_default='${prefix}/include'
2459 libdir_default='${prefix}/lib'
2460 mandir_default='${prefix}/share/man'
2461 shlibdir_default="$libdir_default"
2462
2463 # toolchain
2464 ar_default="ar"
2465 cc_default="gcc"
2466 cxx_default="g++"
2467 host_cc_default="gcc"
2468 cp_f="cp -f"
2469 install="install"
2470 ln_s="ln -s -f"
2471 nm_default="nm -g"
2472 objformat="elf"
2473 pkg_config_default=pkg-config
2474 ranlib="ranlib"
2475 strip_default="strip"
2476 yasmexe_default="yasm"
2477 windres_default="windres"
2478
2479 nogas=":"
2480
2481 # machine
2482 arch_default=$(uname -m)
2483 cpu="generic"
2484
2485 # OS
2486 target_os_default=$(tolower $(uname -s))
2487 host_os=$target_os_default
2488
2489 # configurable options
2490 enable $PROGRAM_LIST
2491 enable $DOCUMENT_LIST
2492 enable $EXAMPLE_LIST
2493 enable $(filter_out avresample $LIBRARY_LIST)
2494 enable stripping
2495
2496 enable asm
2497 enable debug
2498 enable doc
2499 enable optimizations
2500 enable runtime_cpudetect
2501 enable safe_bitstream_reader
2502 enable static
2503 enable swscale_alpha
2504
2505 # Enable hwaccels by default.
2506 enable dxva2 vaapi vdpau xvmc
2507
2508 # build settings
2509 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2510 LIBPREF="lib"
2511 LIBSUF=".a"
2512 FULLNAME='$(NAME)$(BUILDSUF)'
2513 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2514 SLIBPREF="lib"
2515 SLIBSUF=".so"
2516 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2517 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2518 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2519 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2520 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2521 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2522
2523 asflags_filter=echo
2524 cflags_filter=echo
2525 ldflags_filter=echo
2526
2527 AS_C='-c'
2528 AS_O='-o $@'
2529 CC_C='-c'
2530 CC_E='-E -o $@'
2531 CC_O='-o $@'
2532 CXX_C='-c'
2533 CXX_O='-o $@'
2534 LD_O='-o $@'
2535 LD_LIB='-l%'
2536 LD_PATH='-L'
2537 HOSTCC_C='-c'
2538 HOSTCC_E='-E -o $@'
2539 HOSTCC_O='-o $@'
2540 HOSTLD_O='-o $@'
2541
2542 host_libs='-lm'
2543 host_cflags_filter=echo
2544 host_ldflags_filter=echo
2545
2546 target_path='$(CURDIR)'
2547
2548 # since the object filename is not given with the -MM flag, the compiler
2549 # is only able to print the basename, and we must add the path ourselves
2550 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2551 DEPFLAGS='-MM'
2552
2553 # find source path
2554 if test -f configure; then
2555     source_path=.
2556 else
2557     source_path=$(cd $(dirname "$0"); pwd)
2558     echo "$source_path" | grep -q '[[:blank:]]' &&
2559         die "Out of tree builds are impossible with whitespace in source path."
2560     test -e "$source_path/config.h" &&
2561         die "Out of tree builds are impossible with config.h in source dir."
2562 fi
2563
2564 for v in "$@"; do
2565     r=${v#*=}
2566     l=${v%"$r"}
2567     r=$(sh_quote "$r")
2568     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2569 done
2570
2571 find_things(){
2572     thing=$1
2573     pattern=$2
2574     file=$source_path/$3
2575     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2576 }
2577
2578 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2579 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2580 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2581 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2582 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2583 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2584 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2585 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2586 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2587 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2588 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2589
2590 ALL_COMPONENTS="
2591     $BSF_LIST
2592     $DECODER_LIST
2593     $DEMUXER_LIST
2594     $ENCODER_LIST
2595     $FILTER_LIST
2596     $HWACCEL_LIST
2597     $INDEV_LIST
2598     $MUXER_LIST
2599     $OUTDEV_LIST
2600     $PARSER_LIST
2601     $PROTOCOL_LIST
2602 "
2603
2604 for n in $COMPONENT_LIST; do
2605     v=$(toupper ${n%s})_LIST
2606     eval enable \$$v
2607     eval ${n}_if_any="\$$v"
2608 done
2609
2610 enable $ARCH_EXT_LIST
2611
2612 die_unknown(){
2613     echo "Unknown option \"$1\"."
2614     echo "See $0 --help for available options."
2615     exit 1
2616 }
2617
2618 print_3_columns() {
2619     cat | tr ' ' '\n' | sort | pr -r -3 -t
2620 }
2621
2622 show_list() {
2623     suffix=_$1
2624     shift
2625     echo $* | sed s/$suffix//g | print_3_columns
2626     exit 0
2627 }
2628
2629 rand_list(){
2630     IFS=', '
2631     set -- $*
2632     unset IFS
2633     for thing; do
2634         comp=${thing%:*}
2635         prob=${thing#$comp}
2636         prob=${prob#:}
2637         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2638         echo "prob ${prob:-0.5}"
2639         printf '%s\n' $comp
2640     done
2641 }
2642
2643 do_random(){
2644     action=$1
2645     shift
2646     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2647     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2648 }
2649
2650 for opt do
2651     optval="${opt#*=}"
2652     case "$opt" in
2653         --extra-ldflags=*)
2654             add_ldflags $optval
2655         ;;
2656         --extra-libs=*)
2657             add_extralibs $optval
2658         ;;
2659         --disable-devices)
2660             disable $INDEV_LIST $OUTDEV_LIST
2661         ;;
2662         --enable-debug=*)
2663             debuglevel="$optval"
2664         ;;
2665         --disable-programs)
2666             disable $PROGRAM_LIST
2667         ;;
2668         --disable-everything)
2669             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2670         ;;
2671         --disable-all)
2672             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2673             disable $LIBRARY_LIST $PROGRAM_LIST doc
2674         ;;
2675         --enable-random|--disable-random)
2676             action=${opt%%-random}
2677             do_random ${action#--} $COMPONENT_LIST
2678         ;;
2679         --enable-random=*|--disable-random=*)
2680             action=${opt%%-random=*}
2681             do_random ${action#--} $optval
2682         ;;
2683         --enable-*=*|--disable-*=*)
2684             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2685             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2686             eval list=\$$(toupper $thing)_LIST
2687             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2688             list=$(filter "$name" $list)
2689             [ "$list" = "" ] && warn "Option $opt did not match anything"
2690             $action $list
2691         ;;
2692         --enable-?*|--disable-?*)
2693             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2694             if is_in $option $COMPONENT_LIST; then
2695                 test $action = disable && action=unset
2696                 eval $action \$$(toupper ${option%s})_LIST
2697             elif is_in $option $CMDLINE_SELECT; then
2698                 $action $option
2699             else
2700                 die_unknown $opt
2701             fi
2702         ;;
2703         --list-*)
2704             NAME="${opt#--list-}"
2705             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2706             NAME=${NAME%s}
2707             eval show_list $NAME \$$(toupper $NAME)_LIST
2708         ;;
2709         --help|-h) show_help
2710         ;;
2711         --fatal-warnings) enable fatal_warnings
2712         ;;
2713         *)
2714             optname="${opt%%=*}"
2715             optname="${optname#--}"
2716             optname=$(echo "$optname" | sed 's/-/_/g')
2717             if is_in $optname $CMDLINE_SET; then
2718                 eval $optname='$optval'
2719             elif is_in $optname $CMDLINE_APPEND; then
2720                 append $optname "$optval"
2721             else
2722                 die_unknown $opt
2723             fi
2724         ;;
2725     esac
2726 done
2727
2728 disabled logging && logfile=/dev/null
2729
2730 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2731 set >> $logfile
2732
2733 test -n "$cross_prefix" && enable cross_compile
2734
2735 if enabled cross_compile; then
2736     test -n "$arch" && test -n "$target_os" ||
2737         die "Must specify target arch and OS when cross-compiling"
2738 fi
2739
2740 ar_default="${cross_prefix}${ar_default}"
2741 cc_default="${cross_prefix}${cc_default}"
2742 cxx_default="${cross_prefix}${cxx_default}"
2743 nm_default="${cross_prefix}${nm_default}"
2744 pkg_config_default="${cross_prefix}${pkg_config_default}"
2745 ranlib="${cross_prefix}${ranlib}"
2746 strip_default="${cross_prefix}${strip_default}"
2747 windres_default="${cross_prefix}${windres_default}"
2748
2749 sysinclude_default="${sysroot}/usr/include"
2750
2751 test -n "$valgrind" && toolchain="valgrind-memcheck"
2752
2753 case "$toolchain" in
2754     clang-asan)
2755         cc_default="clang"
2756         add_cflags  -fsanitize=address
2757         add_ldflags -fsanitize=address
2758     ;;
2759     clang-tsan)
2760         cc_default="clang"
2761         add_cflags  -fsanitize=thread -pie
2762         add_ldflags -fsanitize=thread -pie
2763     ;;
2764     clang-usan)
2765         cc_default="clang"
2766         add_cflags  -fsanitize=undefined
2767         add_ldflags -fsanitize=undefined
2768     ;;
2769     gcc-asan)
2770         cc_default="gcc"
2771         add_cflags  -fsanitize=address
2772         add_ldflags -fsanitize=address
2773     ;;
2774     gcc-tsan)
2775         cc_default="gcc"
2776         add_cflags  -fsanitize=thread -pie -fPIC
2777         add_ldflags -fsanitize=thread -pie -fPIC
2778     ;;
2779     gcc-usan)
2780         cc_default="gcc"
2781         add_cflags  -fsanitize=undefined
2782         add_ldflags -fsanitize=undefined
2783     ;;
2784     valgrind-massif)
2785         target_exec_default=${valgrind:-"valgrind"}
2786         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"
2787     ;;
2788     valgrind-memcheck)
2789         target_exec_default=${valgrind:-"valgrind"}
2790         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2791     ;;
2792     msvc)
2793         # Check whether the current MSVC version needs the C99 converter.
2794         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2795         # support enough of C99 to build ffmpeg. Default to the new
2796         # behaviour if the regexp was unable to match anything, since this
2797         # successfully parses the version number of existing supported
2798         # versions that require the converter (MSVC 2010 and 2012).
2799         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2800         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2801             cc_default="cl"
2802         else
2803             cc_default="c99wrap cl"
2804         fi
2805         ld_default="link"
2806         nm_default="dumpbin -symbols"
2807         ar_default="lib"
2808         target_os_default="win32"
2809         # Use a relative path for TMPDIR. This makes sure all the
2810         # ffconf temp files are written with a relative path, avoiding
2811         # issues with msys/win32 path conversion for MSVC parameters
2812         # such as -Fo<file> or -out:<file>.
2813         TMPDIR=.
2814     ;;
2815     icl)
2816         cc_default="icl"
2817         ld_default="xilink"
2818         nm_default="dumpbin -symbols"
2819         ar_default="xilib"
2820         target_os_default="win32"
2821         TMPDIR=.
2822     ;;
2823     gcov)
2824         add_cflags  -fprofile-arcs -ftest-coverage
2825         add_ldflags -fprofile-arcs -ftest-coverage
2826     ;;
2827     hardened)
2828         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2829         add_ldflags -Wl,-z,relro -Wl,-z,now
2830     ;;
2831     ?*)
2832         die "Unknown toolchain $toolchain"
2833     ;;
2834 esac
2835
2836 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2837 enabled cross_compile || host_cc_default=$cc
2838 set_default host_cc
2839
2840 if ! $pkg_config --version >/dev/null 2>&1; then
2841     warn "$pkg_config not found, library detection may fail."
2842     pkg_config=false
2843 fi
2844
2845 exesuf() {
2846     case $1 in
2847         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2848     esac
2849 }
2850
2851 EXESUF=$(exesuf $target_os)
2852 HOSTEXESUF=$(exesuf $host_os)
2853
2854 # set temporary file name
2855 : ${TMPDIR:=$TEMPDIR}
2856 : ${TMPDIR:=$TMP}
2857 : ${TMPDIR:=/tmp}
2858
2859 if [ -n "$tempprefix" ] ; then
2860     mktemp(){
2861         echo $tempprefix.${HOSTNAME}.${UID}
2862     }
2863 elif ! check_cmd mktemp -u XXXXXX; then
2864     # simple replacement for missing mktemp
2865     # NOT SAFE FOR GENERAL USE
2866     mktemp(){
2867         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2868     }
2869 fi
2870
2871 tmpfile(){
2872     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2873         (set -C; exec > $tmp) 2>/dev/null ||
2874         die "Unable to create temporary file in $TMPDIR."
2875     append TMPFILES $tmp
2876     eval $1=$tmp
2877 }
2878
2879 trap 'rm -f -- $TMPFILES' EXIT
2880
2881 tmpfile TMPASM .asm
2882 tmpfile TMPC   .c
2883 tmpfile TMPCPP .cpp
2884 tmpfile TMPE   $EXESUF
2885 tmpfile TMPH   .h
2886 tmpfile TMPO   .o
2887 tmpfile TMPS   .S
2888 tmpfile TMPSH  .sh
2889 tmpfile TMPV   .ver
2890
2891 unset -f mktemp
2892
2893 chmod +x $TMPE
2894
2895 # make sure we can execute files in $TMPDIR
2896 cat > $TMPSH 2>> $logfile <<EOF
2897 #! /bin/sh
2898 EOF
2899 chmod +x $TMPSH >> $logfile 2>&1
2900 if ! $TMPSH >> $logfile 2>&1; then
2901     cat <<EOF
2902 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2903 variable to another directory and make sure that it is not mounted noexec.
2904 EOF
2905     die "Sanity test failed."
2906 fi
2907
2908 ccc_flags(){
2909     for flag; do
2910         case $flag in
2911             -std=c99)           echo -c99                       ;;
2912             -mcpu=*)            echo -arch ${flag#*=}           ;;
2913             -mieee)             echo -ieee                      ;;
2914             -O*|-fast)          echo $flag                      ;;
2915             -fno-math-errno)    echo -assume nomath_errno       ;;
2916             -g)                 echo -g3                        ;;
2917             -Wall)              echo -msg_enable level2         ;;
2918             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2919             -Wl,*)              echo $flag                      ;;
2920             -f*|-W*)                                            ;;
2921             *)                  echo $flag                      ;;
2922         esac
2923    done
2924 }
2925
2926 cparser_flags(){
2927     for flag; do
2928         case $flag in
2929             -Wno-switch)             echo -Wno-switch-enum ;;
2930             -Wno-format-zero-length) ;;
2931             -Wdisabled-optimization) ;;
2932             -Wno-pointer-sign)       echo -Wno-other ;;
2933             *)                       echo $flag ;;
2934         esac
2935     done
2936 }
2937
2938 msvc_common_flags(){
2939     for flag; do
2940         case $flag in
2941             # In addition to specifying certain flags under the compiler
2942             # specific filters, they must be specified here as well or else the
2943             # generic catch all at the bottom will print the original flag.
2944             -Wall)                ;;
2945             -std=c99)             ;;
2946             # Common flags
2947             -fomit-frame-pointer) ;;
2948             -g)                   echo -Z7 ;;
2949             -fno-math-errno)      ;;
2950             -fno-common)          ;;
2951             -fno-signed-zeros)    ;;
2952             -fPIC)                ;;
2953             -mthumb)              ;;
2954             -march=*)             ;;
2955             -lz)                  echo zlib.lib ;;
2956             -lavifil32)           echo vfw32.lib ;;
2957             -lavicap32)           echo vfw32.lib user32.lib ;;
2958             -l*)                  echo ${flag#-l}.lib ;;
2959             *)                    echo $flag ;;
2960         esac
2961     done
2962 }
2963
2964 msvc_flags(){
2965     msvc_common_flags "$@"
2966     for flag; do
2967         case $flag in
2968             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2969                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2970                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2971                                        -wd4554 \
2972                                        -wd4273 ;;
2973         esac
2974     done
2975 }
2976
2977 icl_flags(){
2978     msvc_common_flags "$@"
2979     for flag; do
2980         case $flag in
2981             # Despite what Intel's documentation says -Wall, which is supported
2982             # on Windows, does enable remarks so disable them here.
2983             -Wall)                echo $flag -Qdiag-disable:remark ;;
2984             -std=c99)             echo -Qstd=c99 ;;
2985         esac
2986     done
2987 }
2988
2989 pgi_flags(){
2990     for flag; do
2991         case $flag in
2992             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2993             -fomit-frame-pointer) echo -Mnoframe ;;
2994             -g)                   echo -gopt ;;
2995             *)                    echo $flag ;;
2996         esac
2997     done
2998 }
2999
3000 suncc_flags(){
3001     for flag; do
3002         case $flag in
3003             -march=*|-mcpu=*)
3004                 case "${flag#*=}" in
3005                     native)                   echo -xtarget=native       ;;
3006                     v9|niagara)               echo -xarch=sparc          ;;
3007                     ultrasparc)               echo -xarch=sparcvis       ;;
3008                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3009                     i586|pentium)             echo -xchip=pentium        ;;
3010                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3011                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3012                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3013                     pentium4*)          echo -xtarget=pentium4           ;;
3014                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3015                     *-sse3)             echo -xarch=sse3                 ;;
3016                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3017                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3018                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3019                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3020                     bdver*)                    echo -xarch=avx           ;;
3021                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3022                     k8|opteron|athlon64|athlon-fx)
3023                                                echo -xarch=sse2a         ;;
3024                     athlon*)                   echo -xarch=pentium_proa  ;;
3025                 esac
3026                 ;;
3027             -std=c99)             echo -xc99              ;;
3028             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3029             -fPIC)                echo -KPIC -xcode=pic32 ;;
3030             -W*,*)                echo $flag              ;;
3031             -f*-*|-W*|-mimpure-text)                      ;;
3032             -shared)              echo -G                 ;;
3033             *)                    echo $flag              ;;
3034         esac
3035     done
3036 }
3037
3038 tms470_flags(){
3039     for flag; do
3040         case $flag in
3041             -march=*|-mcpu=*)
3042                 case "${flag#*=}" in
3043                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3044                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3045                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3046                     armv6*|arm11*)          echo -mv=6   ;;
3047                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3048                                             echo -mv=5e  ;;
3049                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3050                 esac
3051                 ;;
3052             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3053             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3054             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3055             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3056             -msoft-float)   echo --float_support=vfplib       ;;
3057             -O[0-3]|-mf=*)  echo $flag                        ;;
3058             -g)             echo -g -mn                       ;;
3059             -pds=*)         echo $flag                        ;;
3060             -D*|-I*)        echo $flag                        ;;
3061             --gcc|--abi=*)  echo $flag                        ;;
3062             -me)            echo $flag                        ;;
3063         esac
3064     done
3065 }
3066
3067 probe_cc(){
3068     pfx=$1
3069     _cc=$2
3070
3071     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3072     unset _ld_o _ldflags _ld_lib _ld_path
3073     unset _depflags _DEPCMD _DEPFLAGS
3074     _flags_filter=echo
3075
3076     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3077         true # no-op to avoid reading stdin in following checks
3078     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3079         _type=llvm_gcc
3080         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3081         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3082         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3083         _cflags_speed='-O3'
3084         _cflags_size='-Os'
3085     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3086         _type=gcc
3087         gcc_version=$($_cc --version | head -n1)
3088         gcc_basever=$($_cc -dumpversion)
3089         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3090         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3091         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3092         if ! $_cc -dumpversion | grep -q '^2\.'; then
3093             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3094         fi
3095         _cflags_speed='-O3'
3096         _cflags_size='-Os'
3097     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3098         _type=icc
3099         _ident=$($_cc --version | head -n1)
3100         _depflags='-MMD'
3101         _cflags_speed='-O3'
3102         _cflags_size='-Os'
3103         _cflags_noopt='-O1'
3104     elif $_cc -v 2>&1 | grep -q xlc; then
3105         _type=xlc
3106         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3107         _cflags_speed='-O5'
3108         _cflags_size='-O5 -qcompact'
3109     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3110         _type=ccc
3111         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3112         _DEPFLAGS='-M'
3113         _cflags_speed='-fast'
3114         _cflags_size='-O1'
3115         _flags_filter=ccc_flags
3116     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
3117         test -d "$sysroot" || die "No valid sysroot specified."
3118         _type=armcc
3119         _ident=$($_cc --vsn | head -n1)
3120         armcc_conf="$PWD/armcc.conf"
3121         $_cc --arm_linux_configure                 \
3122              --arm_linux_config_file="$armcc_conf" \
3123              --configure_sysroot="$sysroot"        \
3124              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3125              die "Error creating armcc configuration file."
3126         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3127         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3128         as_default="${cross_prefix}gcc"
3129         _depflags='-MMD'
3130         _cflags_speed='-O3'
3131         _cflags_size='-Os'
3132     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3133         _type=tms470
3134         _ident=$($_cc -version | head -n1 | tr -s ' ')
3135         _flags='--gcc --abi=eabi -me'
3136         _cc_e='-ppl -fe=$@'
3137         _cc_o='-fe=$@'
3138         _depflags='-ppa -ppd=$(@:.o=.d)'
3139         _cflags_speed='-O3 -mf=5'
3140         _cflags_size='-O3 -mf=2'
3141         _flags_filter=tms470_flags
3142     elif $_cc -v 2>&1 | grep -q clang; then
3143         _type=clang
3144         _ident=$($_cc --version | head -n1)
3145         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3146         _cflags_speed='-O3'
3147         _cflags_size='-Os'
3148     elif $_cc -V 2>&1 | grep -q Sun; then
3149         _type=suncc
3150         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3151         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3152         _DEPFLAGS='-xM1 -xc99'
3153         _ldflags='-std=c99'
3154         _cflags_speed='-O5'
3155         _cflags_size='-O5 -xspace'
3156         _flags_filter=suncc_flags
3157     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3158         _type=pathscale
3159         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3160         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3161         _cflags_speed='-O2'
3162         _cflags_size='-Os'
3163         _flags_filter='filter_out -Wdisabled-optimization'
3164     elif $_cc -v 2>&1 | grep -q Open64; then
3165         _type=open64
3166         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3167         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3168         _cflags_speed='-O2'
3169         _cflags_size='-Os'
3170         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3171     elif $_cc -V 2>&1 | grep -q Portland; then
3172         _type=pgi
3173         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3174         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3175         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3176         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3177         _cflags_noopt="-O"
3178         _flags_filter=pgi_flags
3179     elif $_cc 2>&1 | grep -q Microsoft; then
3180         _type=msvc
3181         _ident=$($cc 2>&1 | head -n1)
3182         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3183         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3184         _cflags_speed="-O2"
3185         _cflags_size="-O1"
3186         if $_cc 2>&1 | grep -q Linker; then
3187             _ld_o='-out:$@'
3188         else
3189             _ld_o='-Fe$@'
3190         fi
3191         _cc_o='-Fo$@'
3192         _cc_e='-P -Fi$@'
3193         _flags_filter=msvc_flags
3194         _ld_lib='lib%.a'
3195         _ld_path='-libpath:'
3196         _flags='-nologo'
3197         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3198         if [ $pfx = hostcc ]; then
3199             append _cflags -Dsnprintf=_snprintf
3200         fi
3201         disable stripping
3202     elif $_cc 2>&1 | grep -q Intel; then
3203         _type=icl
3204         _ident=$($cc 2>&1 | head -n1)
3205         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3206         # Not only is O3 broken on 13.x+ but it is slower on all previous
3207         # versions (tested) as well.
3208         _cflags_speed="-O2"
3209         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3210         if $_cc 2>&1 | grep -q Linker; then
3211             _ld_o='-out:$@'
3212         else
3213             _ld_o='-Fe$@'
3214         fi
3215         _cc_o='-Fo$@'
3216         _cc_e='-P'
3217         _flags_filter=icl_flags
3218         _ld_lib='lib%.a'
3219         _ld_path='-libpath:'
3220         # -Qdiag-error to make icl error when seeing certain unknown arguments
3221         _flags='-nologo -Qdiag-error:4044,10157'
3222         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3223         # with MSVC which enables it by default.
3224         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3225         if [ $pfx = hostcc ]; then
3226             append _cflags -Dsnprintf=_snprintf
3227         fi
3228     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3229         _type=cparser
3230         _ident=$($_cc --version | head -n1)
3231         _depflags='-MMD'
3232         _cflags_speed='-O4'
3233         _cflags_size='-O2'
3234         _flags_filter=cparser_flags
3235     fi
3236
3237     eval ${pfx}_type=\$_type
3238     eval ${pfx}_ident=\$_ident
3239 }
3240
3241 set_ccvars(){
3242     eval ${1}_C=\${_cc_c-\${${1}_C}}
3243     eval ${1}_E=\${_cc_e-\${${1}_E}}
3244     eval ${1}_O=\${_cc_o-\${${1}_O}}
3245
3246     if [ -n "$_depflags" ]; then
3247         eval ${1}_DEPFLAGS=\$_depflags
3248     else
3249         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3250         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3251         eval DEP${1}FLAGS=\$_flags
3252     fi
3253 }
3254
3255 probe_cc cc "$cc"
3256 cflags_filter=$_flags_filter
3257 cflags_speed=$_cflags_speed
3258 cflags_size=$_cflags_size
3259 cflags_noopt=$_cflags_noopt
3260 add_cflags $_flags $_cflags
3261 cc_ldflags=$_ldflags
3262 set_ccvars CC
3263
3264 probe_cc hostcc "$host_cc"
3265 host_cflags_filter=$_flags_filter
3266 add_host_cflags  $_flags $_cflags
3267 set_ccvars HOSTCC
3268
3269 test -n "$cc_type" && enable $cc_type ||
3270     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3271
3272 : ${as_default:=$cc}
3273 : ${dep_cc_default:=$cc}
3274 : ${ld_default:=$cc}
3275 : ${host_ld_default:=$host_cc}
3276 set_default ar as dep_cc ld host_ld windres
3277
3278 probe_cc as "$as"
3279 asflags_filter=$_flags_filter
3280 add_asflags $_flags $_cflags
3281 set_ccvars AS
3282
3283 probe_cc ld "$ld"
3284 ldflags_filter=$_flags_filter
3285 add_ldflags $_flags $_ldflags
3286 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3287 LD_O=${_ld_o-$LD_O}
3288 LD_LIB=${_ld_lib-$LD_LIB}
3289 LD_PATH=${_ld_path-$LD_PATH}
3290
3291 probe_cc hostld "$host_ld"
3292 host_ldflags_filter=$_flags_filter
3293 add_host_ldflags $_flags $_ldflags
3294 HOSTLD_O=${_ld_o-$HOSTLD_O}
3295
3296 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3297     probe_cc depcc "$dep_cc"
3298     CCDEP=${_DEPCMD:-$DEPCMD}
3299     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3300     DEPCCFLAGS=$_flags
3301 fi
3302
3303 if $ar 2>&1 | grep -q Microsoft; then
3304     arflags="-nologo"
3305     ar_o='-out:$@'
3306 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3307     arflags="rq"
3308     ar_o='$@'
3309 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3310     arflags='-Xany -r -c'
3311     ar_o='$@'
3312 else
3313     arflags="rc"
3314     ar_o='$@'
3315 fi
3316
3317 add_cflags $extra_cflags
3318 add_cxxflags $extra_cxxflags
3319 add_asflags $extra_cflags
3320
3321 if test -n "$sysroot"; then
3322     case "$cc_type" in
3323         gcc|llvm_gcc|clang)
3324             add_cppflags --sysroot="$sysroot"
3325             add_ldflags --sysroot="$sysroot"
3326         ;;
3327         tms470)
3328             add_cppflags -I"$sysinclude"
3329             add_ldflags  --sysroot="$sysroot"
3330         ;;
3331     esac
3332 fi
3333
3334 if test "$cpu" = host; then
3335     enabled cross_compile &&
3336         die "--cpu=host makes no sense when cross-compiling."
3337
3338     case "$cc_type" in
3339         gcc|llvm_gcc)
3340             check_native(){
3341                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3342                 sed -n "/cc1.*$1=/{
3343                             s/.*$1=\\([^ ]*\\).*/\\1/
3344                             p
3345                             q
3346                         }" $TMPE
3347             }
3348             cpu=$(check_native -march || check_native -mcpu)
3349         ;;
3350     esac
3351
3352     test "${cpu:-host}" = host &&
3353         die "--cpu=host not supported with compiler $cc"
3354 fi
3355
3356 # Deal with common $arch aliases
3357 case "$arch" in
3358     aarch64|arm64)
3359         arch="aarch64"
3360     ;;
3361     arm*|iPad*|iPhone*)
3362         arch="arm"
3363     ;;
3364     mips*|IP*)
3365         arch="mips"
3366     ;;
3367     parisc*|hppa*)
3368         arch="parisc"
3369     ;;
3370     "Power Macintosh"|ppc*|powerpc*)
3371         arch="ppc"
3372     ;;
3373     s390|s390x)
3374         arch="s390"
3375     ;;
3376     sh4|sh)
3377         arch="sh4"
3378     ;;
3379     sun4u|sparc*)
3380         arch="sparc"
3381     ;;
3382     tilegx|tile-gx)
3383         arch="tilegx"
3384     ;;
3385     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3386         arch="x86"
3387     ;;
3388 esac
3389
3390 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3391 enable $arch
3392
3393 # Add processor-specific flags
3394 if enabled aarch64; then
3395
3396     case $cpu in
3397         armv*)
3398             cpuflags="-march=$cpu"
3399         ;;
3400         *)
3401             cpuflags="-mcpu=$cpu"
3402         ;;
3403     esac
3404
3405 elif enabled alpha; then
3406
3407     cpuflags="-mcpu=$cpu"
3408
3409 elif enabled arm; then
3410
3411     check_arm_arch() {
3412         check_cpp_condition stddef.h \
3413             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3414             $cpuflags
3415     }
3416
3417     probe_arm_arch() {
3418         if   check_arm_arch 4;        then echo armv4;
3419         elif check_arm_arch 4T;       then echo armv4t;
3420         elif check_arm_arch 5;        then echo armv5;
3421         elif check_arm_arch 5E;       then echo armv5e;
3422         elif check_arm_arch 5T;       then echo armv5t;
3423         elif check_arm_arch 5TE;      then echo armv5te;
3424         elif check_arm_arch 5TEJ;     then echo armv5te;
3425         elif check_arm_arch 6;        then echo armv6;
3426         elif check_arm_arch 6J;       then echo armv6j;
3427         elif check_arm_arch 6K;       then echo armv6k;
3428         elif check_arm_arch 6Z;       then echo armv6z;
3429         elif check_arm_arch 6ZK;      then echo armv6zk;
3430         elif check_arm_arch 6T2;      then echo armv6t2;
3431         elif check_arm_arch 7;        then echo armv7;
3432         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3433         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3434         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3435         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3436         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3437         fi
3438     }
3439
3440     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3441
3442     case $cpu in
3443         armv*)
3444             cpuflags="-march=$cpu"
3445             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3446         ;;
3447         *)
3448             cpuflags="-mcpu=$cpu"
3449             case $cpu in
3450                 cortex-a*)                               subarch=armv7a  ;;
3451                 cortex-r*)                               subarch=armv7r  ;;
3452                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3453                 arm11*)                                  subarch=armv6   ;;
3454                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3455                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3456                 *)                             subarch=$(probe_arm_arch) ;;
3457             esac
3458         ;;
3459     esac
3460
3461     case "$subarch" in
3462         armv5t*)    enable fast_clz                ;;
3463         armv[6-8]*) enable fast_clz fast_unaligned ;;
3464     esac
3465
3466 elif enabled avr32; then
3467
3468     case $cpu in
3469         ap7[02]0[0-2])
3470             subarch="avr32_ap"
3471             cpuflags="-mpart=$cpu"
3472         ;;
3473         ap)
3474             subarch="avr32_ap"
3475             cpuflags="-march=$cpu"
3476         ;;
3477         uc3[ab]*)
3478             subarch="avr32_uc"
3479             cpuflags="-mcpu=$cpu"
3480         ;;
3481         uc)
3482             subarch="avr32_uc"
3483             cpuflags="-march=$cpu"
3484         ;;
3485     esac
3486
3487 elif enabled bfin; then
3488
3489     cpuflags="-mcpu=$cpu"
3490
3491 elif enabled mips; then
3492
3493     cpuflags="-march=$cpu"
3494
3495     case $cpu in
3496         24kc)
3497             disable mipsfpu
3498             disable mipsdspr1
3499             disable mipsdspr2
3500         ;;
3501         24kf*)
3502             disable mipsdspr1
3503             disable mipsdspr2
3504         ;;
3505         24kec|34kc|1004kc)
3506             disable mipsfpu
3507             disable mipsdspr2
3508         ;;
3509         24kef*|34kf*|1004kf*)
3510             disable mipsdspr2
3511         ;;
3512         74kc)
3513             disable mipsfpu
3514         ;;
3515     esac
3516
3517 elif enabled ppc; then
3518
3519     case $(tolower $cpu) in
3520         601|ppc601|powerpc601)
3521             cpuflags="-mcpu=601"
3522             disable altivec
3523         ;;
3524         603*|ppc603*|powerpc603*)
3525             cpuflags="-mcpu=603"
3526             disable altivec
3527         ;;
3528         604*|ppc604*|powerpc604*)
3529             cpuflags="-mcpu=604"
3530             disable altivec
3531         ;;
3532         g3|75*|ppc75*|powerpc75*)
3533             cpuflags="-mcpu=750"
3534             disable altivec
3535         ;;
3536         g4|745*|ppc745*|powerpc745*)
3537             cpuflags="-mcpu=7450"
3538         ;;
3539         74*|ppc74*|powerpc74*)
3540             cpuflags="-mcpu=7400"
3541         ;;
3542         g5|970|ppc970|powerpc970)
3543             cpuflags="-mcpu=970"
3544         ;;
3545         power[3-7]*)
3546             cpuflags="-mcpu=$cpu"
3547         ;;
3548         cell)
3549             cpuflags="-mcpu=cell"
3550             enable ldbrx
3551         ;;
3552         e500mc)
3553             cpuflags="-mcpu=e500mc"
3554             disable altivec
3555         ;;
3556         e500v2)
3557             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3558             disable altivec
3559         ;;
3560         e500)
3561             cpuflags="-mcpu=8540 -mhard-float"
3562             disable altivec
3563         ;;
3564     esac
3565
3566 elif enabled sparc; then
3567
3568     case $cpu in
3569         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3570             cpuflags="-mcpu=$cpu"
3571             disable vis
3572         ;;
3573         ultrasparc*|niagara[234])
3574             cpuflags="-mcpu=$cpu"
3575         ;;
3576     esac
3577
3578 elif enabled x86; then
3579
3580     case $cpu in
3581         i[345]86|pentium)
3582             cpuflags="-march=$cpu"
3583             disable mmx
3584         ;;
3585         # targets that do NOT support nopl and conditional mov (cmov)
3586         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3587             cpuflags="-march=$cpu"
3588             disable i686
3589         ;;
3590         # targets that do support nopl and conditional mov (cmov)
3591         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3592             cpuflags="-march=$cpu"
3593             enable i686
3594             enable fast_cmov
3595         ;;
3596         # targets that do support conditional mov but on which it's slow
3597         pentium4|pentium4m|prescott|nocona)
3598             cpuflags="-march=$cpu"
3599             enable i686
3600             disable fast_cmov
3601         ;;
3602     esac
3603
3604 fi
3605
3606 if [ "$cpu" != generic ]; then
3607     add_cflags  $cpuflags
3608     add_asflags $cpuflags
3609 fi
3610
3611 # compiler sanity check
3612 check_exec <<EOF
3613 int main(void){ return 0; }
3614 EOF
3615 if test "$?" != 0; then
3616     echo "$cc is unable to create an executable file."
3617     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3618         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3619         echo "Only do this if you know what cross compiling means."
3620     fi
3621     die "C compiler test failed."
3622 fi
3623
3624 add_cppflags -D_ISOC99_SOURCE
3625 add_cxxflags -D__STDC_CONSTANT_MACROS
3626 check_cflags -std=c99
3627 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3628 #include <stdlib.h>
3629 EOF
3630 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3631 #include <stdlib.h>
3632 EOF
3633
3634 add_host_cppflags -D_ISOC99_SOURCE
3635 check_host_cflags -std=c99
3636 check_host_cflags -Wall
3637 check_host_cflags -O3
3638
3639 check_64bit(){
3640     arch32=$1
3641     arch64=$2
3642     expr=$3
3643     check_code cc "" "int test[2*($expr) - 1]" &&
3644         subarch=$arch64 || subarch=$arch32
3645 }
3646
3647 case "$arch" in
3648     aarch64|alpha|ia64)
3649         spic=$shared
3650     ;;
3651     mips)
3652         check_64bit mips mips64 '_MIPS_SIM > 1'
3653         spic=$shared
3654     ;;
3655     parisc)
3656         check_64bit parisc parisc64 'sizeof(void *) > 4'
3657         spic=$shared
3658     ;;
3659     ppc)
3660         check_64bit ppc ppc64 'sizeof(void *) > 4'
3661         spic=$shared
3662     ;;
3663     sparc)
3664         check_64bit sparc sparc64 'sizeof(void *) > 4'
3665         spic=$shared
3666     ;;
3667     x86)
3668         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3669         if test "$subarch" = "x86_64"; then
3670             spic=$shared
3671         fi
3672     ;;
3673     ppc)
3674         check_cc <<EOF && subarch="ppc64"
3675         int test[(int)sizeof(char*) - 7];
3676 EOF
3677     ;;
3678 esac
3679
3680 enable $subarch
3681 enabled spic && enable_weak pic
3682
3683 # OS specific
3684 case $target_os in
3685     aix)
3686         SHFLAGS=-shared
3687         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3688         enabled shared && add_ldflags -Wl,-brtl
3689         ;;
3690     haiku)
3691         prefix_default="/boot/common"
3692         network_extralibs="-lnetwork"
3693         host_libs=
3694         ;;
3695     sunos)
3696         SHFLAGS='-shared -Wl,-h,$$(@F)'
3697         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3698         network_extralibs="-lsocket -lnsl"
3699         # When using suncc to build, the Solaris linker will mark
3700         # an executable with each instruction set encountered by
3701         # the Solaris assembler.  As our libraries contain their own
3702         # guards for processor-specific code, instead suppress
3703         # generation of the HWCAPS ELF section on Solaris x86 only.
3704         enabled_all suncc x86 &&
3705             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3706             add_ldflags -Wl,-M,mapfile
3707         nm_default='nm -P -g'
3708         ;;
3709     netbsd)
3710         disable symver
3711         oss_indev_extralibs="-lossaudio"
3712         oss_outdev_extralibs="-lossaudio"
3713         enabled gcc || check_ldflags -Wl,-zmuldefs
3714         ;;
3715     openbsd|bitrig)
3716         disable symver
3717         SHFLAGS='-shared'
3718         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3719         SLIB_INSTALL_LINKS=
3720         oss_indev_extralibs="-lossaudio"
3721         oss_outdev_extralibs="-lossaudio"
3722         ;;
3723     dragonfly)
3724         disable symver
3725         ;;
3726     freebsd)
3727         ;;
3728     bsd/os)
3729         add_extralibs -lpoll -lgnugetopt
3730         strip="strip -d"
3731         ;;
3732     darwin)
3733         gas="gas-preprocessor.pl $cc"
3734         enabled ppc && add_asflags -force_cpusubtype_ALL
3735         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3736         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3737         strip="${strip} -x"
3738         add_ldflags -Wl,-dynamic,-search_paths_first
3739         SLIBSUF=".dylib"
3740         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3741         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3742         objformat="macho"
3743         enabled x86_64 && objformat="macho64"
3744         enabled_any pic shared ||
3745             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3746         ;;
3747     mingw32*)
3748         if test $target_os = "mingw32ce"; then
3749             disable network
3750         else
3751             target_os=mingw32
3752         fi
3753         LIBTARGET=i386
3754         if enabled x86_64; then
3755             LIBTARGET="i386:x86-64"
3756         elif enabled arm; then
3757             LIBTARGET=arm-wince
3758         fi
3759         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3760         check_ldflags -Wl,--nxcompat
3761         check_ldflags -Wl,--dynamicbase
3762         shlibdir_default="$bindir_default"
3763         SLIBPREF=""
3764         SLIBSUF=".dll"
3765         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3766         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3767         dlltool="${cross_prefix}dlltool"
3768         if check_cmd lib.exe -list; then
3769             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3770             if enabled x86_64; then
3771                 LIBTARGET=x64
3772             fi
3773         elif check_cmd $dlltool --version; then
3774             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3775         fi
3776         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3777         SLIB_INSTALL_LINKS=
3778         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3779         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3780         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3781         objformat="win32"
3782         ranlib=:
3783         enable dos_paths
3784         ;;
3785     win32|win64)
3786         disable symver
3787         if enabled shared; then
3788             # Link to the import library instead of the normal static library
3789             # for shared libs.
3790             LD_LIB='%.lib'
3791             # Cannot build both shared and static libs with MSVC or icl.
3792             disable static
3793         fi
3794         shlibdir_default="$bindir_default"
3795         SLIBPREF=""
3796         SLIBSUF=".dll"
3797         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3798         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3799         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3800         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3801         SLIB_INSTALL_LINKS=
3802         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3803         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3804         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3805         objformat="win32"
3806         ranlib=:
3807         enable dos_paths
3808         ;;
3809     cygwin*)
3810         target_os=cygwin
3811         shlibdir_default="$bindir_default"
3812         SLIBPREF="cyg"
3813         SLIBSUF=".dll"
3814         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3815         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3816         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3817         SLIB_INSTALL_LINKS=
3818         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3819         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3820         objformat="win32"
3821         enable dos_paths
3822         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3823         ;;
3824     *-dos|freedos|opendos)
3825         network_extralibs="-lsocket"
3826         objformat="coff"
3827         enable dos_paths
3828         add_cppflags -U__STRICT_ANSI__
3829         ;;
3830     linux)
3831         enable dv1394
3832         ;;
3833     irix*)
3834         target_os=irix
3835         ranlib="echo ignoring ranlib"
3836         ;;
3837     os/2*)
3838         strip="lxlite -CS"
3839         ln_s="cp -f"
3840         objformat="aout"
3841         add_cppflags -D_GNU_SOURCE
3842         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3843         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3844         LIBSUF="_s.a"
3845         SLIBPREF=""
3846         SLIBSUF=".dll"
3847         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3848         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3849         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3850             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3851             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3852             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3853             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3854             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3855         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3856             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3857         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3858         enable dos_paths
3859         enable_weak os2threads
3860         ;;
3861     gnu/kfreebsd)
3862         add_cppflags -D_BSD_SOURCE
3863         ;;
3864     gnu)
3865         ;;
3866     qnx)
3867         add_cppflags -D_QNX_SOURCE
3868         network_extralibs="-lsocket"
3869         ;;
3870     symbian)
3871         SLIBSUF=".dll"
3872         enable dos_paths
3873         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3874         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3875         add_ldflags -Wl,--target1-abs,--no-undefined \
3876                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3877                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3878         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3879                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3880                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3881         ;;
3882     osf1)
3883         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3884         ;;
3885     minix)
3886         ;;
3887     plan9)
3888         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3889                      -D_REENTRANT_SOURCE        \
3890                      -D_RESEARCH_SOURCE         \
3891                      -DFD_SETSIZE=96            \
3892                      -DHAVE_SOCK_OPTS
3893         add_compat strtod.o strtod=avpriv_strtod
3894         network_extralibs='-lbsd'
3895         exeobjs=compat/plan9/main.o
3896         disable ffserver
3897         cp_f='cp'
3898         ;;
3899     none)
3900         ;;
3901     *)
3902         die "Unknown OS '$target_os'."
3903         ;;
3904 esac
3905
3906 # determine libc flavour
3907
3908 probe_libc(){
3909     pfx=$1
3910     pfx_no_=${pfx%_}
3911     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3912     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3913         eval ${pfx}libc_type=uclibc
3914         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3915     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3916         eval ${pfx}libc_type=glibc
3917         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3918     # MinGW headers can be installed on Cygwin, so check for newlib first.
3919     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3920         eval ${pfx}libc_type=newlib
3921         add_${pfx}cppflags -U__STRICT_ANSI__
3922     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3923     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3924         eval ${pfx}libc_type=mingw64
3925         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
3926             add_compat msvcrt/snprintf.o
3927             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3928         fi
3929         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3930         eval test \$${pfx_no_}cc_type = "gcc" &&
3931             add_${pfx}cppflags -D__printf__=__gnu_printf__
3932     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3933          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3934         eval ${pfx}libc_type=mingw32
3935         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3936             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3937             die "ERROR: MinGW32 runtime version must be >= 3.15."
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 crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3942         eval ${pfx}libc_type=msvcrt
3943         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3944         # 0x601 by default unless something else is set by the user.
3945         # This can easily lead to us detecting functions only present
3946         # in such new versions and producing binaries requiring windows 7.0.
3947         # Therefore explicitly set the default to XP unless the user has
3948         # set something else on the command line.
3949         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3950             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3951     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3952         eval ${pfx}libc_type=klibc
3953     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3954         eval ${pfx}libc_type=bionic
3955     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3956         eval ${pfx}libc_type=solaris
3957         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3958     fi
3959 }
3960
3961 probe_libc
3962 test -n "$libc_type" && enable libc_$libc_type
3963 probe_libc host_
3964 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3965
3966 case $libc_type in
3967     bionic)
3968         add_compat strtod.o strtod=avpriv_strtod
3969         ;;
3970     msvcrt)
3971         add_compat strtod.o strtod=avpriv_strtod
3972         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3973                                      _snprintf=avpriv_snprintf  \
3974                                      vsnprintf=avpriv_vsnprintf
3975         ;;
3976 esac
3977
3978 # hacks for compiler/libc/os combinations
3979
3980 if enabled_all tms470 libc_glibc; then
3981     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3982     add_cppflags -D__USER_LABEL_PREFIX__=
3983     add_cppflags -D__builtin_memset=memset
3984     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3985     add_cflags   -pds=48    # incompatible redefinition of macro
3986 fi
3987
3988 if enabled_all ccc libc_glibc; then
3989     add_ldflags -Wl,-z,now  # calls to libots crash without this
3990 fi
3991
3992 esc(){
3993     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3994 }
3995
3996 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3997
3998 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3999
4000 set_default $PATHS_LIST
4001 set_default nm
4002
4003 # we need to build at least one lib type
4004 if ! enabled_any static shared; then
4005     cat <<EOF
4006 At least one library type must be built.
4007 Specify --enable-static to build the static libraries or --enable-shared to
4008 build the shared libraries as well. To only build the shared libraries specify
4009 --disable-static in addition to --enable-shared.
4010 EOF
4011     exit 1;
4012 fi
4013
4014 # backward compatibility layer for incompatible_libav/fork_abi
4015 enabled incompatible_fork_abi  && enable incompatible_libav_abi
4016 enabled incompatible_libav_abi && enable incompatible_fork_abi
4017
4018 die_license_disabled() {
4019     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4020 }
4021
4022 die_license_disabled_gpl() {
4023     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4024 }
4025
4026 die_license_disabled gpl frei0r
4027 die_license_disabled gpl libcdio
4028 die_license_disabled gpl libutvideo
4029 die_license_disabled gpl libvidstab
4030 die_license_disabled gpl libx264
4031 die_license_disabled gpl libx265
4032 die_license_disabled gpl libxavs
4033 die_license_disabled gpl libxvid
4034 die_license_disabled gpl libzvbi
4035 die_license_disabled gpl x11grab
4036
4037 die_license_disabled nonfree libaacplus
4038 die_license_disabled nonfree libfaac
4039 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4040 enabled gpl && die_license_disabled_gpl nonfree openssl
4041
4042 die_license_disabled version3 libopencore_amrnb
4043 die_license_disabled version3 libopencore_amrwb
4044 die_license_disabled version3 libvo_aacenc
4045 die_license_disabled version3 libvo_amrwbenc
4046
4047 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4048
4049 disabled optimizations || check_cflags -fomit-frame-pointer
4050
4051 enable_weak_pic() {
4052     disabled pic && return
4053     enable pic
4054     add_cppflags -DPIC
4055     case "$target_os" in
4056     mingw*|cygwin*)
4057         ;;
4058     *)
4059         add_cflags -fPIC
4060         ;;
4061     esac
4062     add_asflags  -fPIC
4063 }
4064
4065 enabled pic && enable_weak_pic
4066
4067 check_cc <<EOF || die "Symbol mangling check failed."
4068 int ff_extern;
4069 EOF
4070 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4071 extern_prefix=${sym%%ff_extern*}
4072
4073 check_cc <<EOF && enable_weak inline_asm
4074 void foo(void) { __asm__ volatile ("" ::); }
4075 EOF
4076
4077 _restrict=
4078 for restrict_keyword in restrict __restrict__ __restrict; do
4079     check_cc <<EOF && _restrict=$restrict_keyword && break
4080 void foo(char * $restrict_keyword p);
4081 EOF
4082 done
4083
4084 check_cc <<EOF && enable pragma_deprecated
4085 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4086 EOF
4087
4088 check_cc <<EOF && enable attribute_packed
4089 struct { int x; } __attribute__((packed)) x;
4090 EOF
4091
4092 check_cc <<EOF && enable attribute_may_alias
4093 union { int x; } __attribute__((may_alias)) x;
4094 EOF
4095
4096 check_cc <<EOF || die "endian test failed"
4097 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4098 EOF
4099 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4100
4101 check_inline_asm inline_asm_labels '"1:\n"'
4102
4103 if enabled aarch64; then
4104     # internal assembler in clang 3.3 does not support this instruction
4105     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4106     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4107
4108     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4109
4110 elif enabled alpha; then
4111
4112     check_cflags -mieee
4113
4114 elif enabled arm; then
4115
4116     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4117 float func(float a, float b){ return a+b; }
4118 EOF
4119
4120     enabled thumb && check_cflags -mthumb || check_cflags -marm
4121     nogas=die
4122
4123     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4124         enable vfp_args
4125     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4126         case "${cross_prefix:-$cc}" in
4127             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4128             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4129 __asm__ (".eabi_attribute 28, 1");
4130 int main(void) { return 0; }
4131 EOF
4132         esac
4133         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4134     fi
4135
4136     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4137     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4138     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4139     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4140     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4141     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4142
4143     [ $target_os = linux ] ||
4144         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4145             $ARCH_EXT_LIST_ARM
4146
4147     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4148     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
4149
4150     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4151
4152 elif enabled mips; then
4153
4154     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4155     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4156      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4157     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4158      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4159     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4160      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4161     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4162      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4163
4164 elif enabled parisc; then
4165
4166     if enabled gcc; then
4167         case $($cc -dumpversion) in
4168             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4169         esac
4170     fi
4171
4172 elif enabled ppc; then
4173
4174     enable local_aligned_8 local_aligned_16
4175
4176     [ $cpu != e500 -a $cpu != e500v2 ] &&
4177      check_inline_asm dcbzl    '"dcbzl 0, %0" :: "r"(0)'
4178     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4179     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4180     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4181
4182     # AltiVec flags: The FSF version of GCC differs from the Apple version
4183     if enabled altivec; then
4184         if ! enabled_any pic ppc64; then
4185             nogas=warn
4186         fi
4187         check_cflags -maltivec -mabi=altivec &&
4188         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4189         check_cflags -faltivec
4190
4191         # check if our compiler supports Motorola AltiVec C API
4192         check_cc <<EOF || disable altivec
4193 $inc_altivec_h
4194 int main(void) {
4195     vector signed int v1 = (vector signed int) { 0 };
4196     vector signed int v2 = (vector signed int) { 1 };
4197     v1 = vec_add(v1, v2);
4198     return 0;
4199 }
4200 EOF
4201
4202         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4203     fi
4204
4205 elif enabled sparc; then
4206
4207     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
4208
4209 elif enabled x86; then
4210
4211     check_builtin rdtsc    intrin.h   "__rdtsc()"
4212     check_builtin mm_empty mmintrin.h "_mm_empty()"
4213
4214     enable local_aligned_8 local_aligned_16
4215
4216     # check whether EBP is available on x86
4217     # As 'i' is stored on the stack, this program will crash
4218     # if the base pointer is used to access it because the
4219     # base pointer is cleared in the inline assembly code.
4220     check_exec_crash <<EOF && enable ebp_available
4221 volatile int i=0;
4222 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4223 return i;
4224 EOF
4225
4226     # check whether EBX is available on x86
4227     check_inline_asm ebx_available '""::"b"(0)' &&
4228         check_inline_asm ebx_available '"":::"%ebx"'
4229
4230     # check whether xmm clobbers are supported
4231     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4232
4233     # check whether binutils is new enough to compile SSSE3/MMXEXT
4234     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4235     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4236
4237     if ! disabled_any asm mmx yasm; then
4238         if check_cmd $yasmexe --version; then
4239             enabled x86_64 && yasm_extra="-m amd64"
4240             yasm_debug="-g dwarf2"
4241         elif check_cmd nasm -v; then
4242             yasmexe=nasm
4243             yasm_debug="-g -F dwarf"
4244             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4245         fi
4246
4247         YASMFLAGS="-f $objformat $yasm_extra"
4248         enabled pic               && append YASMFLAGS "-DPIC"
4249         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4250         case "$objformat" in
4251             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4252         esac
4253
4254         check_yasm "movbe ecx, [5]" && enable yasm ||
4255             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4256         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4257         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4258         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4259         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4260         check_yasm "CPU amdnop" && enable cpunop
4261     fi
4262
4263     case "$cpu" in
4264         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4265             disable fast_clz
4266         ;;
4267     esac
4268
4269 fi
4270
4271 if enabled asm; then
4272     as=${gas:=$as}
4273     check_as <<EOF && enable gnu_as || \
4274         $nogas "GNU assembler not found, install gas-preprocessor"
4275 .macro m n
4276 \n: .int 0
4277 .endm
4278 m x
4279 EOF
4280 fi
4281
4282 check_ldflags -Wl,--as-needed
4283
4284 if check_func dlopen; then
4285     ldl=
4286 elif check_func dlopen -ldl; then
4287     ldl=-ldl
4288 fi
4289
4290 if ! disabled network; then
4291     check_type "sys/types.h sys/socket.h" socklen_t
4292     check_type netdb.h "struct addrinfo"
4293     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4294     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4295     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4296     check_type netinet/in.h "struct sockaddr_in6"
4297     check_type poll.h "struct pollfd"
4298     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4299     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4300     check_type netinet/sctp.h "struct sctp_event_subscribe"
4301     check_func getaddrinfo $network_extralibs
4302     check_func getservbyport $network_extralibs
4303     check_func inet_aton $network_extralibs
4304     # Prefer arpa/inet.h over winsock2
4305     if check_header arpa/inet.h ; then
4306         check_func closesocket
4307     elif check_header winsock2.h ; then
4308         check_func_headers winsock2.h closesocket -lws2 &&
4309             network_extralibs="-lws2" ||
4310         { check_func_headers winsock2.h closesocket -lws2_32 &&
4311             network_extralibs="-lws2_32"; } || disable winsock2_h network
4312         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4313         check_type ws2tcpip.h socklen_t
4314         check_type ws2tcpip.h "struct addrinfo"
4315         check_type ws2tcpip.h "struct group_source_req"
4316         check_type ws2tcpip.h "struct ip_mreq_source"
4317         check_type ws2tcpip.h "struct ipv6_mreq"
4318         check_type winsock2.h "struct pollfd"
4319         check_type ws2tcpip.h "struct sockaddr_in6"
4320         check_type ws2tcpip.h "struct sockaddr_storage"
4321         check_struct winsock2.h "struct sockaddr" sa_len
4322     else
4323         disable network
4324     fi
4325 fi
4326
4327 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4328 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4329
4330 check_func  access
4331 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4332 check_func  fcntl
4333 check_func  fork
4334 check_func_headers stdlib.h getenv
4335 check_func  gethrtime
4336 check_func  getopt
4337 check_func  getrusage
4338 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4339 check_func  gettimeofday
4340 check_func  isatty
4341 check_func  localtime_r
4342 check_func  ${malloc_prefix}memalign            && enable memalign
4343 check_func  mkstemp
4344 check_func  mmap
4345 check_func  mprotect
4346 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4347 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4348 check_func  setrlimit
4349 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4350 check_func  strerror_r
4351 check_func  sched_getaffinity
4352 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4353 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4354 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4355 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4356 check_builtin sarestart signal.h "SA_RESTART"
4357 check_func  sysconf
4358 check_func  sysctl
4359 check_func  usleep
4360 check_func_headers conio.h kbhit
4361 check_func_headers windows.h PeekNamedPipe
4362 check_func_headers io.h setmode
4363 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4364 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4365 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4366 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4367 check_func_headers windows.h GetProcessAffinityMask
4368 check_func_headers windows.h GetProcessTimes
4369 check_func_headers windows.h GetSystemTimeAsFileTime
4370 check_func_headers windows.h MapViewOfFile
4371 check_func_headers windows.h SetConsoleTextAttribute
4372 check_func_headers windows.h Sleep
4373 check_func_headers windows.h VirtualAlloc
4374 check_func_headers glob.h glob
4375 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4376
4377 check_header cl/cl.h
4378 check_header direct.h
4379 check_header dlfcn.h
4380 check_header dxva.h
4381 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4382 check_header io.h
4383 check_header libcrystalhd/libcrystalhd_if.h
4384 check_header malloc.h
4385 check_header poll.h
4386 check_header sys/mman.h
4387 check_header sys/param.h
4388 check_header sys/resource.h
4389 check_header sys/select.h
4390 check_header sys/time.h
4391 check_header sys/un.h
4392 check_header termios.h
4393 check_header unistd.h
4394 check_header vdpau/vdpau.h
4395 check_header vdpau/vdpau_x11.h
4396 check_header VideoDecodeAcceleration/VDADecoder.h
4397 check_header windows.h
4398 check_header X11/extensions/XvMClib.h
4399 check_header asm/types.h
4400
4401 if ! disabled w32threads && ! enabled pthreads; then
4402     check_func_headers "windows.h process.h" _beginthreadex &&
4403         enable w32threads || disable w32threads
4404 fi
4405
4406 # check for some common methods of building with pthread support
4407 # do this before the optional library checks as some of them require pthreads
4408 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4409     enable pthreads
4410     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4411         add_cflags -pthread
4412         add_extralibs -pthread
4413     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4414         add_cflags -pthreads
4415         add_extralibs -pthreads
4416     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4417         add_extralibs -lpthreadGC2
4418     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4419         :
4420     elif ! check_func pthread_join && ! check_func pthread_create; then
4421         disable pthreads
4422     fi
4423     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4424 fi
4425
4426 for thread in $THREADS_LIST; do
4427     if enabled $thread; then
4428         test -n "$thread_type" &&
4429             die "ERROR: Only one thread type must be selected." ||
4430             thread_type="$thread"
4431     fi
4432 done
4433
4434 if enabled pthreads; then
4435   check_func pthread_cancel
4436 fi
4437
4438 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4439 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4440
4441 check_lib math.h sin -lm && LIBM="-lm"
4442 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4443
4444 atan2f_args=2
4445 ldexpf_args=2
4446 powf_args=2
4447
4448 for func in $MATH_FUNCS; do
4449     eval check_mathfunc $func \${${func}_args:-1}
4450 done
4451
4452 # these are off by default, so fail if requested and not available
4453 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4454                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4455                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4456 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4457 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4458 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4459 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4460 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4461 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4462 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4463 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4464 enabled libbluray         && require libbluray libbluray/bluray.h bd_open -lbluray
4465 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4466                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4467                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4468 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4469 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4470 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4471 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"
4472 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4473 enabled libfreetype       && require_libfreetype
4474 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4475 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4476                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4477                                done || die "ERROR: libgsm not found"; }
4478 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4479 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4480 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4481 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4482 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4483 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4484 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4485 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4486                                check_lib openjpeg.h opj_version -lopenjpeg ||
4487                                die "ERROR: libopenjpeg not found"; }
4488 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4489 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4490 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4491 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4492 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4493 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4494 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4495 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4496 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4497 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4498     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4499     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4500 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4501 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4502                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4503                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4504 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4505 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4506 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4507 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4508 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4509 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4510 enabled libvpx            && {
4511     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4512                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4513     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 ||
4514                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4515     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4516     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; } }
4517 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4518 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4519 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4520                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4521                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4522 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4523                              { check_cpp_condition x265.h "X265_BUILD >= 5" ||
4524                                die "ERROR: libx265 version must be >= 5."; }
4525 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4526 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4527 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4528 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4529 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4530                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4531                                die "ERROR: openal not found"; } &&
4532                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4533                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4534 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4535                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4536                                die "ERROR: opencl not found"; } &&
4537                              { ! enabled_any w32threads os2threads ||
4538                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4539                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4540                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4541                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4542 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4543                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4544                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4545                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4546                                die "ERROR: opengl not found."
4547                              }
4548 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4549                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4550                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4551                                die "ERROR: openssl not found"; }
4552
4553 if enabled gnutls; then
4554     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4555     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4556 fi
4557
4558 # libdc1394 check
4559 if enabled libdc1394; then
4560     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4561         enable libdc1394_2; } ||
4562     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4563         enable libdc1394_1; } ||
4564     die "ERROR: No version of libdc1394 found "
4565 fi
4566
4567 SDL_CONFIG="${cross_prefix}sdl-config"
4568 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4569     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4570     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4571     enable sdl
4572 else
4573   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4574     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4575     sdl_libs=$("${SDL_CONFIG}" --libs)
4576     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4577     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4578     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4579     enable sdl
4580   fi
4581 fi
4582 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4583
4584 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4585 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4586 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4587 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4588 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4589
4590 check_header linux/fb.h
4591 check_header linux/videodev.h
4592 check_header linux/videodev2.h
4593 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4594
4595 check_header sys/videoio.h
4596
4597 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4598 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4599 # w32api 3.12 had it defined wrong
4600 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4601
4602 check_type "dshow.h" IBaseFilter
4603
4604 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4605 { check_header dev/bktr/ioctl_meteor.h &&
4606   check_header dev/bktr/ioctl_bt848.h; } ||
4607 { check_header machine/ioctl_meteor.h &&
4608   check_header machine/ioctl_bt848.h; } ||
4609 { check_header dev/video/meteor/ioctl_meteor.h &&
4610   check_header dev/video/bktr/ioctl_bt848.h; } ||
4611 check_header dev/ic/bt8xx.h
4612
4613 check_header sndio.h
4614 if check_struct sys/soundcard.h audio_buf_info bytes; then
4615     enable_safe sys/soundcard.h
4616 else
4617     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4618     #include <sys/soundcard.h>
4619     audio_buf_info abc;
4620 EOF
4621 fi
4622 check_header soundcard.h
4623
4624 enabled_any alsa_indev alsa_outdev &&
4625     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4626
4627 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4628     check_func jack_port_get_latency_range -ljack
4629
4630 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4631
4632 if enabled libcdio; then
4633     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4634     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4635     die "ERROR: libcdio-paranoia not found"
4636 fi
4637
4638 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4639
4640 enabled x11grab                                           &&
4641 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4642 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4643 { enabled xlib || die "ERROR: Xlib not found"; }
4644
4645 enabled vaapi &&
4646     check_lib va/va.h vaInitialize -lva ||
4647     disable vaapi
4648
4649 enabled vdpau &&
4650     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4651     disable vdpau
4652
4653 enabled vdpau && enabled xlib &&
4654     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4655     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
4656     enable vdpau_x11
4657
4658 # Funny iconv installations are not unusual, so check it after all flags have been set
4659 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4660
4661 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4662
4663 # add some useful compiler flags if supported
4664 check_cflags -Wdeclaration-after-statement
4665 check_cflags -Wall
4666 check_cflags -Wdisabled-optimization
4667 check_cflags -Wpointer-arith
4668 check_cflags -Wredundant-decls
4669 check_cflags -Wwrite-strings
4670 check_cflags -Wtype-limits
4671 check_cflags -Wundef
4672 check_cflags -Wmissing-prototypes
4673 check_cflags -Wno-pointer-to-int-cast
4674 check_cflags -Wstrict-prototypes
4675 enabled extra_warnings && check_cflags -Winline
4676
4677 check_disable_warning(){
4678     warning_flag=-W${1#-Wno-}
4679     test_cflags $warning_flag && add_cflags $1
4680 }
4681
4682 check_disable_warning -Wno-parentheses
4683 check_disable_warning -Wno-switch
4684 check_disable_warning -Wno-format-zero-length
4685 check_disable_warning -Wno-pointer-sign
4686
4687 # add some linker flags
4688 check_ldflags -Wl,--warn-common
4689 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4690 enabled rpath && add_ldflags -Wl,-rpath=$libdir
4691 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4692
4693 # add some strip flags
4694 # -wN '..@*' is more selective than -x, but not available everywhere.
4695 check_stripflags -wN \'..@*\' || check_stripflags -x
4696
4697 enabled neon_clobber_test &&
4698     check_ldflags -Wl,--wrap,avcodec_open2              \
4699                   -Wl,--wrap,avcodec_decode_audio4      \
4700                   -Wl,--wrap,avcodec_decode_video2      \
4701                   -Wl,--wrap,avcodec_decode_subtitle2   \
4702                   -Wl,--wrap,avcodec_encode_audio2      \
4703                   -Wl,--wrap,avcodec_encode_video2      \
4704                   -Wl,--wrap,avcodec_encode_subtitle    \
4705                   -Wl,--wrap,swr_convert                \
4706                   -Wl,--wrap,avresample_convert ||
4707     disable neon_clobber_test
4708
4709 enabled xmm_clobber_test &&
4710     check_ldflags -Wl,--wrap,avcodec_open2              \
4711                   -Wl,--wrap,avcodec_decode_audio4      \
4712                   -Wl,--wrap,avcodec_decode_video2      \
4713                   -Wl,--wrap,avcodec_decode_subtitle2   \
4714                   -Wl,--wrap,avcodec_encode_audio2      \
4715                   -Wl,--wrap,avcodec_encode_video       \
4716                   -Wl,--wrap,avcodec_encode_video2      \
4717                   -Wl,--wrap,avcodec_encode_subtitle    \
4718                   -Wl,--wrap,swr_convert                \
4719                   -Wl,--wrap,avresample_convert         \
4720                   -Wl,--wrap,sws_scale ||
4721     disable xmm_clobber_test
4722
4723 echo "X{};" > $TMPV
4724 if test_ldflags -Wl,--version-script,$TMPV; then
4725     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4726     check_cc <<EOF && enable symver_asm_label
4727 void ff_foo(void) __asm__ ("av_foo@VERSION");
4728 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4729 EOF
4730     check_cc <<EOF && enable symver_gnu_asm
4731 __asm__(".symver ff_foo,av_foo@VERSION");
4732 void ff_foo(void) {}
4733 EOF
4734 fi
4735
4736 if [ -z "$optflags" ]; then
4737     if enabled small; then
4738         optflags=$cflags_size
4739     elif enabled optimizations; then
4740         optflags=$cflags_speed
4741     else
4742         optflags=$cflags_noopt
4743     fi
4744 fi
4745
4746 check_optflags(){
4747     check_cflags "$@"
4748     enabled lto && check_ldflags "$@"
4749 }
4750
4751
4752 if enabled lto; then