Use intel compliant CDQ instead of CLTD in inline asm.
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92
93 Licensing options:
94   --enable-gpl             allow use of GPL code, the resulting libs
95                            and binaries will be under GPL [no]
96   --enable-version3        upgrade (L)GPL to version 3 [no]
97   --enable-nonfree         allow use of nonfree code, the resulting libs
98                            and binaries will be unredistributable [no]
99
100 Configuration options:
101   --disable-static         do not build static libraries [no]
102   --enable-shared          build shared libraries [no]
103   --enable-small           optimize for size instead of speed
104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
105   --enable-gray            enable full grayscale support (slower color)
106   --disable-swscale-alpha  disable alpha channel support in swscale
107   --disable-all            disable building components, libraries and programs
108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
109   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
110   --enable-raise-major     increase major version numbers in sonames [no]
111
112 Program options:
113   --disable-programs       do not build command line programs
114   --disable-ffmpeg         disable ffmpeg build
115   --disable-ffplay         disable ffplay build
116   --disable-ffprobe        disable ffprobe build
117   --disable-ffserver       disable ffserver build
118
119 Documentation options:
120   --disable-doc            do not build documentation
121   --disable-htmlpages      do not build HTML documentation pages
122   --disable-manpages       do not build man documentation pages
123   --disable-podpages       do not build POD documentation pages
124   --disable-txtpages       do not build text documentation pages
125
126 Component options:
127   --disable-avdevice       disable libavdevice build
128   --disable-avcodec        disable libavcodec build
129   --disable-avformat       disable libavformat build
130   --disable-avutil         disable libavutil build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [auto]
137   --disable-w32threads     disable Win32 threads [auto]
138   --disable-os2threads     disable OS/2 threads [auto]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148
149 Hardware accelerators:
150   --disable-dxva2          disable DXVA2 code [autodetect]
151   --disable-vaapi          disable VAAPI code [autodetect]
152   --disable-vda            disable VDA code [autodetect]
153   --disable-vdpau          disable VDPAU code [autodetect]
154
155 Individual component options:
156   --disable-everything     disable all components listed below
157   --disable-encoder=NAME   disable encoder NAME
158   --enable-encoder=NAME    enable encoder NAME
159   --disable-encoders       disable all encoders
160   --disable-decoder=NAME   disable decoder NAME
161   --enable-decoder=NAME    enable decoder NAME
162   --disable-decoders       disable all decoders
163   --disable-hwaccel=NAME   disable hwaccel NAME
164   --enable-hwaccel=NAME    enable hwaccel NAME
165   --disable-hwaccels       disable all hwaccels
166   --disable-muxer=NAME     disable muxer NAME
167   --enable-muxer=NAME      enable muxer NAME
168   --disable-muxers         disable all muxers
169   --disable-demuxer=NAME   disable demuxer NAME
170   --enable-demuxer=NAME    enable demuxer NAME
171   --disable-demuxers       disable all demuxers
172   --enable-parser=NAME     enable parser NAME
173   --disable-parser=NAME    disable parser NAME
174   --disable-parsers        disable all parsers
175   --enable-bsf=NAME        enable bitstream filter NAME
176   --disable-bsf=NAME       disable bitstream filter NAME
177   --disable-bsfs           disable all bitstream filters
178   --enable-protocol=NAME   enable protocol NAME
179   --disable-protocol=NAME  disable protocol NAME
180   --disable-protocols      disable all protocols
181   --enable-indev=NAME      enable input device NAME
182   --disable-indev=NAME     disable input device NAME
183   --disable-indevs         disable input devices
184   --enable-outdev=NAME     enable output device NAME
185   --disable-outdev=NAME    disable output device NAME
186   --disable-outdevs        disable output devices
187   --disable-devices        disable all devices
188   --enable-filter=NAME     enable filter NAME
189   --disable-filter=NAME    disable filter NAME
190   --disable-filters        disable all filters
191
192 External library support:
193   --enable-avisynth        enable reading of AviSynth script files [no]
194   --disable-bzlib          disable bzlib [autodetect]
195   --enable-fontconfig      enable fontconfig
196   --enable-frei0r          enable frei0r video filtering
197   --enable-gnutls          enable gnutls [no]
198   --disable-iconv          disable iconv [autodetect]
199   --enable-ladspa          enable LADSPA audio filtering
200   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
201   --enable-libass          enable libass subtitles rendering [no]
202   --enable-libbluray       enable BluRay reading using libbluray [no]
203   --enable-libcaca         enable textual display using libcaca
204   --enable-libcelt         enable CELT decoding via libcelt [no]
205   --enable-libcdio         enable audio CD grabbing with libcdio
206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
207                            and libraw1394 [no]
208   --enable-libfaac         enable AAC encoding via libfaac [no]
209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
211   --enable-libfreetype     enable libfreetype [no]
212   --enable-libgme          enable Game Music Emu via libgme [no]
213   --enable-libgsm          enable GSM de/encoding via libgsm [no]
214   --enable-libiec61883     enable iec61883 via libiec61883 [no]
215   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
216   --enable-libmodplug      enable ModPlug via libmodplug [no]
217   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
218   --enable-libnut          enable NUT (de)muxing via libnut,
219                            native (de)muxer exists [no]
220   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
221   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
222   --enable-libopencv       enable video filtering via libopencv [no]
223   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
224   --enable-libopus         enable Opus decoding via libopus [no]
225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
226   --enable-libquvi         enable quvi input via libquvi [no]
227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
230   --enable-libsoxr         enable Include libsoxr resampling [no]
231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
232   --enable-libssh          enable SFTP protocol via libssh [no]
233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
234   --enable-libtheora       enable Theora encoding via libtheora [no]
235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
238   --enable-libvidstab      enable video stabilization using vid.stab [no]
239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
242                            native implementation exists [no]
243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
245   --enable-libwebp         enable WebP encoding via libwebp [no]
246   --enable-libx264         enable H.264 encoding via x264 [no]
247   --enable-libx265         enable HEVC encoding via x265 [no]
248   --enable-libxavs         enable AVS encoding via xavs [no]
249   --enable-libxvid         enable Xvid encoding via xvidcore,
250                            native MPEG-4/Xvid encoder exists [no]
251   --enable-libzmq          enable message passing via libzmq [no]
252   --enable-libzvbi         enable teletext support via libzvbi [no]
253   --enable-decklink        enable Blackmagick DeckLink output [no]
254   --enable-openal          enable OpenAL 1.1 capture support [no]
255   --enable-opencl          enable OpenCL code
256   --enable-opengl          enable OpenGL rendering [no]
257   --enable-openssl         enable openssl [no]
258   --disable-qtkit          disable QTKit input device support [autodetect]
259   --enable-x11grab         enable X11 grabbing [no]
260   --disable-xlib           disable xlib [autodetect]
261   --disable-zlib           disable zlib [autodetect]
262
263 Toolchain options:
264   --arch=ARCH              select architecture [$arch]
265   --cpu=CPU                select the minimum required CPU (affects
266                            instruction selection, may crash on older CPUs)
267   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
268   --progs-suffix=SUFFIX    program name suffix []
269   --enable-cross-compile   assume a cross-compiler is used
270   --sysroot=PATH           root of cross-build tree
271   --sysinclude=PATH        location of cross-build system headers
272   --target-os=OS           compiler targets OS [$target_os]
273   --target-exec=CMD        command to run executables on target
274   --target-path=DIR        path to view of build directory on target
275   --target-samples=DIR     path to samples directory on target
276   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
277   --toolchain=NAME         set tool defaults according to NAME
278   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
279   --nm=NM                  use nm tool NM [$nm_default]
280   --ar=AR                  use archive tool AR [$ar_default]
281   --as=AS                  use assembler AS [$as_default]
282   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
283   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
284   --cc=CC                  use C compiler CC [$cc_default]
285   --cxx=CXX                use C compiler CXX [$cxx_default]
286   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
287   --ld=LD                  use linker LD [$ld_default]
288   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
289   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
290   --host-cc=HOSTCC         use host C compiler HOSTCC
291   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
292   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
293   --host-ld=HOSTLD         use host linker HOSTLD
294   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
295   --host-libs=HLIBS        use libs HLIBS when linking for host
296   --host-os=OS             compiler host OS [$target_os]
297   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
298   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
299   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
300   --extra-libs=ELIBS       add ELIBS [$ELIBS]
301   --extra-version=STRING   version string suffix []
302   --optflags=OPTFLAGS      override optimization-related compiler flags
303   --build-suffix=SUFFIX    library name suffix []
304   --enable-pic             build position-independent code
305   --enable-thumb           compile for Thumb instruction set
306   --enable-lto             use link-time optimization
307
308 Advanced options (experts only):
309   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
310   --disable-symver         disable symbol versioning
311   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
312   --disable-safe-bitstream-reader
313                            disable buffer boundary checking in bitreaders
314                            (faster, but may crash)
315   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
316   --enable-sram            allow use of on-chip SRAM
317
318 Optimization options (experts only):
319   --disable-asm            disable all assembler optimizations
320   --disable-altivec        disable AltiVec optimizations
321   --disable-amd3dnow       disable 3DNow! optimizations
322   --disable-amd3dnowext    disable 3DNow! extended optimizations
323   --disable-mmx            disable MMX optimizations
324   --disable-mmxext         disable MMXEXT optimizations
325   --disable-sse            disable SSE optimizations
326   --disable-sse2           disable SSE2 optimizations
327   --disable-sse3           disable SSE3 optimizations
328   --disable-ssse3          disable SSSE3 optimizations
329   --disable-sse4           disable SSE4 optimizations
330   --disable-sse42          disable SSE4.2 optimizations
331   --disable-avx            disable AVX optimizations
332   --disable-xop            disable XOP optimizations
333   --disable-fma3           disable FMA3 optimizations
334   --disable-fma4           disable FMA4 optimizations
335   --disable-avx2           disable AVX2 optimizations
336   --disable-armv5te        disable armv5te optimizations
337   --disable-armv6          disable armv6 optimizations
338   --disable-armv6t2        disable armv6t2 optimizations
339   --disable-vfp            disable VFP optimizations
340   --disable-neon           disable NEON optimizations
341   --disable-inline-asm     disable use of inline assembler
342   --disable-yasm           disable use of yasm assembler
343   --disable-mips32r2       disable MIPS32R2 optimizations
344   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
345   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
346   --disable-mipsfpu        disable floating point MIPS optimizations
347   --disable-fast-unaligned consider unaligned accesses slow
348
349 Developer options (useful when working on FFmpeg itself):
350   --disable-debug          disable debugging symbols
351   --enable-debug=LEVEL     set the debug level [$debuglevel]
352   --disable-optimizations  disable compiler optimizations
353   --enable-extra-warnings  enable more compiler warnings
354   --disable-stripping      disable stripping of executables and shared libraries
355   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
356                            2 causes a slowdown at runtime.
357   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
358   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
359                            leaks and errors, using the specified valgrind binary.
360                            Cannot be combined with --target-exec
361   --enable-ftrapv          Trap arithmetic overflows
362   --samples=PATH           location of test samples for FATE, if not set use
363                            \$FATE_SAMPLES at make invocation time.
364   --enable-neon-clobber-test check NEON registers for clobbering (should be
365                            used only for debugging purposes)
366   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
367                            should be used only for debugging purposes)
368   --enable-random          randomly enable/disable components
369   --disable-random
370   --enable-random=LIST     randomly enable/disable specific components or
371   --disable-random=LIST    component groups. LIST is a comma-separated list
372                            of NAME[:PROB] entries where NAME is a component
373                            (group) and PROB the probability associated with
374                            NAME (default 0.5).
375   --random-seed=VALUE      seed value for --enable/disable-random
376
377 NOTE: Object files are built at the place where configure is launched.
378 EOF
379   exit 0
380 }
381
382 quotes='""'
383
384 log(){
385     echo "$@" >> $logfile
386 }
387
388 log_file(){
389     log BEGIN $1
390     pr -n -t $1 >> $logfile
391     log END $1
392 }
393
394 echolog(){
395     log "$@"
396     echo "$@"
397 }
398
399 warn(){
400     log "WARNING: $*"
401     WARNINGS="${WARNINGS}WARNING: $*\n"
402 }
403
404 die(){
405     echolog "$@"
406     cat <<EOF
407
408 If you think configure made a mistake, make sure you are using the latest
409 version from Git.  If the latest version fails, report the problem to the
410 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
411 EOF
412     if disabled logging; then
413         cat <<EOF
414 Rerun configure with logging enabled (do not use --disable-logging), and
415 include the log this produces with your report.
416 EOF
417     else
418         cat <<EOF
419 Include the log file "$logfile" produced by configure as this will help
420 solving the problem.
421 EOF
422     fi
423     exit 1
424 }
425
426 # Avoid locale weirdness, besides we really just want to translate ASCII.
427 toupper(){
428     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
429 }
430
431 tolower(){
432     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
433 }
434
435 c_escape(){
436     echo "$*" | sed 's/["\\]/\\\0/g'
437 }
438
439 sh_quote(){
440     v=$(echo "$1" | sed "s/'/'\\\\''/g")
441     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
442     echo "$v"
443 }
444
445 cleanws(){
446     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
447 }
448
449 filter(){
450     pat=$1
451     shift
452     for v; do
453         eval "case $v in $pat) echo $v ;; esac"
454     done
455 }
456
457 filter_out(){
458     pat=$1
459     shift
460     for v; do
461         eval "case $v in $pat) ;; *) echo $v ;; esac"
462     done
463 }
464
465 map(){
466     m=$1
467     shift
468     for v; do eval $m; done
469 }
470
471 add_suffix(){
472     suffix=$1
473     shift
474     for v; do echo ${v}${suffix}; done
475 }
476
477 set_all(){
478     value=$1
479     shift
480     for var in $*; do
481         eval $var=$value
482     done
483 }
484
485 set_weak(){
486     value=$1
487     shift
488     for var; do
489         eval : \${$var:=$value}
490     done
491 }
492
493 sanitize_var_name(){
494     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
495 }
496
497 set_safe(){
498     var=$1
499     shift
500     eval $(sanitize_var_name "$var")='$*'
501 }
502
503 get_safe(){
504     eval echo \$$(sanitize_var_name "$1")
505 }
506
507 pushvar(){
508     for pvar in $*; do
509         eval level=\${${pvar}_level:=0}
510         eval ${pvar}_${level}="\$$pvar"
511         eval ${pvar}_level=$(($level+1))
512     done
513 }
514
515 popvar(){
516     for pvar in $*; do
517         eval level=\${${pvar}_level:-0}
518         test $level = 0 && continue
519         eval level=$(($level-1))
520         eval $pvar="\${${pvar}_${level}}"
521         eval ${pvar}_level=$level
522         eval unset ${pvar}_${level}
523     done
524 }
525
526 enable(){
527     set_all yes $*
528 }
529
530 disable(){
531     set_all no $*
532 }
533
534 enable_weak(){
535     set_weak yes $*
536 }
537
538 disable_weak(){
539     set_weak no $*
540 }
541
542 enable_safe(){
543     for var; do
544         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
545     done
546 }
547
548 disable_safe(){
549     for var; do
550         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
551     done
552 }
553
554 do_enable_deep(){
555     for var; do
556         enabled $var && continue
557         eval sel="\$${var}_select"
558         eval sgs="\$${var}_suggest"
559         pushvar var sgs
560         enable_deep $sel
561         popvar sgs
562         enable_deep_weak $sgs
563         popvar var
564     done
565 }
566
567 enable_deep(){
568     do_enable_deep $*
569     enable $*
570 }
571
572 enable_deep_weak(){
573     for var; do
574         disabled $var && continue
575         pushvar var
576         do_enable_deep $var
577         popvar var
578         enable_weak $var
579     done
580 }
581
582 enabled(){
583     test "${1#!}" = "$1" && op== || op=!=
584     eval test "x\$${1#!}" $op "xyes"
585 }
586
587 disabled(){
588     test "${1#!}" = "$1" && op== || op=!=
589     eval test "x\$${1#!}" $op "xno"
590 }
591
592 enabled_all(){
593     for opt; do
594         enabled $opt || return 1
595     done
596 }
597
598 disabled_all(){
599     for opt; do
600         disabled $opt || return 1
601     done
602 }
603
604 enabled_any(){
605     for opt; do
606         enabled $opt && return 0
607     done
608 }
609
610 disabled_any(){
611     for opt; do
612         disabled $opt && return 0
613     done
614     return 1
615 }
616
617 set_default(){
618     for opt; do
619         eval : \${$opt:=\$${opt}_default}
620     done
621 }
622
623 is_in(){
624     value=$1
625     shift
626     for var in $*; do
627         [ $var = $value ] && return 0
628     done
629     return 1
630 }
631
632 do_check_deps(){
633     for cfg; do
634         cfg="${cfg#!}"
635         enabled ${cfg}_checking && die "Circular dependency for $cfg."
636         disabled ${cfg}_checking && continue
637         enable ${cfg}_checking
638         append allopts $cfg
639
640         eval dep_all="\$${cfg}_deps"
641         eval dep_any="\$${cfg}_deps_any"
642         eval dep_sel="\$${cfg}_select"
643         eval dep_sgs="\$${cfg}_suggest"
644         eval dep_ifa="\$${cfg}_if"
645         eval dep_ifn="\$${cfg}_if_any"
646
647         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
648         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
649         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
650
651         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
652         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
653         enabled_all  $dep_all || disable $cfg
654         enabled_any  $dep_any || disable $cfg
655         disabled_any $dep_sel && disable $cfg
656
657         if enabled $cfg; then
658             enable_deep $dep_sel
659             enable_deep_weak $dep_sgs
660         fi
661
662         disable ${cfg}_checking
663     done
664 }
665
666 check_deps(){
667     unset allopts
668
669     do_check_deps "$@"
670
671     for cfg in $allopts; do
672         enabled $cfg || continue
673         eval dep_extralibs="\$${cfg}_extralibs"
674         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
675     done
676 }
677
678 print_config(){
679     pfx=$1
680     files=$2
681     shift 2
682     map 'eval echo "$v \${$v:-no}"' "$@" |
683     awk "BEGIN { split(\"$files\", files) }
684         {
685             c = \"$pfx\" toupper(\$1);
686             v = \$2;
687             sub(/yes/, 1, v);
688             sub(/no/,  0, v);
689             for (f in files) {
690                 file = files[f];
691                 if (file ~ /\\.h\$/) {
692                     printf(\"#define %s %d\\n\", c, v) >>file;
693                 } else if (file ~ /\\.asm\$/) {
694                     printf(\"%%define %s %d\\n\", c, v) >>file;
695                 } else if (file ~ /\\.mak\$/) {
696                     n = -v ? \"\" : \"!\";
697                     printf(\"%s%s=yes\\n\", n, c) >>file;
698                 } else if (file ~ /\\.texi\$/) {
699                     pre = -v ? \"\" : \"@c \";
700                     yesno = \$2;
701                     c2 = tolower(c);
702                     gsub(/_/, \"-\", c2);
703                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
704                 }
705             }
706         }"
707 }
708
709 print_enabled(){
710     suf=$1
711     shift
712     for v; do
713         enabled $v && printf "%s\n" ${v%$suf};
714     done
715 }
716
717 append(){
718     var=$1
719     shift
720     eval "$var=\"\$$var $*\""
721 }
722
723 prepend(){
724     var=$1
725     shift
726     eval "$var=\"$* \$$var\""
727 }
728
729 add_cppflags(){
730     append CPPFLAGS "$@"
731 }
732
733 add_cflags(){
734     append CFLAGS $($cflags_filter "$@")
735 }
736
737 add_cxxflags(){
738     append CXXFLAGS $($cflags_filter "$@")
739 }
740
741 add_asflags(){
742     append ASFLAGS $($asflags_filter "$@")
743 }
744
745 add_ldflags(){
746     append LDFLAGS $($ldflags_filter "$@")
747 }
748
749 add_stripflags(){
750     append ASMSTRIPFLAGS "$@"
751 }
752
753 add_extralibs(){
754     prepend extralibs $($ldflags_filter "$@")
755 }
756
757 add_host_cppflags(){
758     append host_cppflags "$@"
759 }
760
761 add_host_cflags(){
762     append host_cflags $($host_cflags_filter "$@")
763 }
764
765 add_host_ldflags(){
766     append host_ldflags $($host_ldflags_filter "$@")
767 }
768
769 add_compat(){
770     append compat_objs $1
771     shift
772     map 'add_cppflags -D$v' "$@"
773 }
774
775 check_cmd(){
776     log "$@"
777     "$@" >> $logfile 2>&1
778 }
779
780 cc_o(){
781     eval printf '%s\\n' $CC_O
782 }
783
784 cc_e(){
785     eval printf '%s\\n' $CC_E
786 }
787
788 check_cc(){
789     log check_cc "$@"
790     cat > $TMPC
791     log_file $TMPC
792     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
793 }
794
795 check_cxx(){
796     log check_cxx "$@"
797     cat > $TMPCPP
798     log_file $TMPCPP
799     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
800 }
801
802 check_cpp(){
803     log check_cpp "$@"
804     cat > $TMPC
805     log_file $TMPC
806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
807 }
808
809 as_o(){
810     eval printf '%s\\n' $AS_O
811 }
812
813 check_as(){
814     log check_as "$@"
815     cat > $TMPS
816     log_file $TMPS
817     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
818 }
819
820 check_inline_asm(){
821     log check_inline_asm "$@"
822     name="$1"
823     code="$2"
824     shift 2
825     disable $name
826     check_cc "$@" <<EOF && enable $name
827 void foo(void){ __asm__ volatile($code); }
828 EOF
829 }
830
831 check_insn(){
832     log check_insn "$@"
833     check_inline_asm ${1}_inline "\"$2\""
834     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
835 }
836
837 check_yasm(){
838     log check_yasm "$@"
839     echo "$1" > $TMPS
840     log_file $TMPS
841     shift 1
842     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
843 }
844
845 ld_o(){
846     eval printf '%s\\n' $LD_O
847 }
848
849 check_ld(){
850     log check_ld "$@"
851     type=$1
852     shift 1
853     flags=$(filter_out '-l*|*.so' $@)
854     libs=$(filter '-l*|*.so' $@)
855     check_$type $($cflags_filter $flags) || return
856     flags=$($ldflags_filter $flags)
857     libs=$($ldflags_filter $libs)
858     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
859 }
860
861 print_include(){
862     hdr=$1
863     test "${hdr%.h}" = "${hdr}" &&
864         echo "#include $hdr"    ||
865         echo "#include <$hdr>"
866 }
867
868 check_code(){
869     log check_code "$@"
870     check=$1
871     headers=$2
872     code=$3
873     shift 3
874     {
875         for hdr in $headers; do
876             print_include $hdr
877         done
878         echo "int main(void) { $code; return 0; }"
879     } | check_$check "$@"
880 }
881
882 check_cppflags(){
883     log check_cppflags "$@"
884     check_cc "$@" <<EOF && append CPPFLAGS "$@"
885 int x;
886 EOF
887 }
888
889 test_cflags(){
890     log test_cflags "$@"
891     set -- $($cflags_filter "$@")
892     check_cc "$@" <<EOF
893 int x;
894 EOF
895 }
896
897 check_cflags(){
898     log check_cflags "$@"
899     test_cflags "$@" && add_cflags "$@"
900 }
901
902 check_cxxflags(){
903     log check_cxxflags "$@"
904     set -- $($cflags_filter "$@")
905     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
906 int x;
907 EOF
908 }
909
910 test_ldflags(){
911     log test_ldflags "$@"
912     check_ld "cc" "$@" <<EOF
913 int main(void){ return 0; }
914 EOF
915 }
916
917 check_ldflags(){
918     log check_ldflags "$@"
919     test_ldflags "$@" && add_ldflags "$@"
920 }
921
922 test_stripflags(){
923     log test_stripflags "$@"
924     # call check_cc to get a fresh TMPO
925     check_cc <<EOF
926 int main(void) { return 0; }
927 EOF
928     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
929 }
930
931 check_stripflags(){
932     log check_stripflags "$@"
933     test_stripflags "$@" && add_stripflags "$@"
934 }
935
936 check_header(){
937     log check_header "$@"
938     header=$1
939     shift
940     disable_safe $header
941     check_cpp "$@" <<EOF && enable_safe $header
942 #include <$header>
943 int x;
944 EOF
945 }
946
947 check_func(){
948     log check_func "$@"
949     func=$1
950     shift
951     disable $func
952     check_ld "cc" "$@" <<EOF && enable $func
953 extern int $func();
954 int main(void){ $func(); }
955 EOF
956 }
957
958 check_mathfunc(){
959     log check_mathfunc "$@"
960     func=$1
961     narg=$2
962     shift 2
963     test $narg = 2 && args="f, g" || args="f"
964     disable $func
965     check_ld "cc" "$@" <<EOF && enable $func
966 #include <math.h>
967 float foo(float f, float g) { return $func($args); }
968 int main(void){ return (int) foo; }
969 EOF
970 }
971
972 check_func_headers(){
973     log check_func_headers "$@"
974     headers=$1
975     funcs=$2
976     shift 2
977     {
978         for hdr in $headers; do
979             print_include $hdr
980         done
981         for func in $funcs; do
982             echo "long check_$func(void) { return (long) $func; }"
983         done
984         echo "int main(void) { return 0; }"
985     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
986 }
987
988 check_class_headers_cpp(){
989     log check_class_headers_cpp "$@"
990     headers=$1
991     classes=$2
992     shift 2
993     {
994         for hdr in $headers; do
995             echo "#include <$hdr>"
996         done
997         echo "int main(void) { "
998         i=1
999         for class in $classes; do
1000             echo "$class obj$i;"
1001             i=$(expr $i + 1)
1002         done
1003         echo "return 0; }"
1004     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1005 }
1006
1007 check_cpp_condition(){
1008     log check_cpp_condition "$@"
1009     header=$1
1010     condition=$2
1011     shift 2
1012     check_cpp "$@" <<EOF
1013 #include <$header>
1014 #if !($condition)
1015 #error "unsatisfied condition: $condition"
1016 #endif
1017 EOF
1018 }
1019
1020 check_lib(){
1021     log check_lib "$@"
1022     header="$1"
1023     func="$2"
1024     shift 2
1025     check_header $header && check_func $func "$@" && add_extralibs "$@"
1026 }
1027
1028 check_lib2(){
1029     log check_lib2 "$@"
1030     headers="$1"
1031     funcs="$2"
1032     shift 2
1033     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1034 }
1035
1036 check_lib_cpp(){
1037     log check_lib_cpp "$@"
1038     headers="$1"
1039     classes="$2"
1040     shift 2
1041     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1042 }
1043
1044 check_pkg_config(){
1045     log check_pkg_config "$@"
1046     pkgandversion="$1"
1047     pkg="${1%% *}"
1048     headers="$2"
1049     funcs="$3"
1050     shift 3
1051     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1052     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1053     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1054     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1055         set_safe ${pkg}_cflags $pkg_cflags   &&
1056         set_safe ${pkg}_libs   $pkg_libs
1057 }
1058
1059 check_exec(){
1060     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1061 }
1062
1063 check_exec_crash(){
1064     code=$(cat)
1065
1066     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1067     # are safe but may not be available everywhere.  Thus we use
1068     # raise(SIGTERM) instead.  The check is run in a subshell so we
1069     # can redirect the "Terminated" message from the shell.  SIGBUS
1070     # is not defined by standard C so it is used conditionally.
1071
1072     (check_exec "$@") >> $logfile 2>&1 <<EOF
1073 #include <signal.h>
1074 static void sighandler(int sig){
1075     raise(SIGTERM);
1076 }
1077 int foo(void){
1078     $code
1079 }
1080 int (*func_ptr)(void) = foo;
1081 int main(void){
1082     signal(SIGILL, sighandler);
1083     signal(SIGFPE, sighandler);
1084     signal(SIGSEGV, sighandler);
1085 #ifdef SIGBUS
1086     signal(SIGBUS, sighandler);
1087 #endif
1088     return func_ptr();
1089 }
1090 EOF
1091 }
1092
1093 check_type(){
1094     log check_type "$@"
1095     headers=$1
1096     type=$2
1097     shift 2
1098     disable_safe "$type"
1099     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1100 }
1101
1102 check_struct(){
1103     log check_struct "$@"
1104     headers=$1
1105     struct=$2
1106     member=$3
1107     shift 3
1108     disable_safe "${struct}_${member}"
1109     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1110         enable_safe "${struct}_${member}"
1111 }
1112
1113 check_builtin(){
1114     log check_builtin "$@"
1115     name=$1
1116     headers=$2
1117     builtin=$3
1118     shift 3
1119     disable "$name"
1120     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1121 }
1122
1123 check_compile_assert(){
1124     log check_compile_assert "$@"
1125     name=$1
1126     headers=$2
1127     condition=$3
1128     shift 3
1129     disable "$name"
1130     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1131 }
1132
1133 require(){
1134     name="$1"
1135     header="$2"
1136     func="$3"
1137     shift 3
1138     check_lib $header $func "$@" || die "ERROR: $name not found"
1139 }
1140
1141 require2(){
1142     name="$1"
1143     headers="$2"
1144     func="$3"
1145     shift 3
1146     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1147 }
1148
1149 require_cpp(){
1150     name="$1"
1151     headers="$2"
1152     classes="$3"
1153     shift 3
1154     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1155 }
1156
1157 require_pkg_config(){
1158     pkg="$1"
1159     check_pkg_config "$@" || die "ERROR: $pkg not found"
1160     add_cflags    $(get_safe ${pkg}_cflags)
1161     add_extralibs $(get_safe ${pkg}_libs)
1162 }
1163
1164 require_libfreetype(){
1165     log require_libfreetype "$@"
1166     pkg="freetype2"
1167     check_cmd $pkg_config --exists --print-errors $pkg \
1168       || die "ERROR: $pkg not found"
1169     pkg_cflags=$($pkg_config --cflags $pkg)
1170     pkg_libs=$($pkg_config --libs $pkg)
1171     {
1172         echo "#include <ft2build.h>"
1173         echo "#include FT_FREETYPE_H"
1174         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1175         echo "int main(void) { return 0; }"
1176     } | check_ld "cc" $pkg_cflags $pkg_libs \
1177       && set_safe ${pkg}_cflags $pkg_cflags \
1178       && set_safe ${pkg}_libs   $pkg_libs \
1179       || die "ERROR: $pkg not found"
1180     add_cflags    $(get_safe ${pkg}_cflags)
1181     add_extralibs $(get_safe ${pkg}_libs)
1182 }
1183
1184 hostcc_e(){
1185     eval printf '%s\\n' $HOSTCC_E
1186 }
1187
1188 hostcc_o(){
1189     eval printf '%s\\n' $HOSTCC_O
1190 }
1191
1192 check_host_cc(){
1193     log check_host_cc "$@"
1194     cat > $TMPC
1195     log_file $TMPC
1196     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1197 }
1198
1199 check_host_cpp(){
1200     log check_host_cpp "$@"
1201     cat > $TMPC
1202     log_file $TMPC
1203     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1204 }
1205
1206 check_host_cppflags(){
1207     log check_host_cppflags "$@"
1208     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1209 int x;
1210 EOF
1211 }
1212
1213 check_host_cflags(){
1214     log check_host_cflags "$@"
1215     set -- $($host_cflags_filter "$@")
1216     check_host_cc "$@" <<EOF && append host_cflags "$@"
1217 int x;
1218 EOF
1219 }
1220
1221 check_host_cpp_condition(){
1222     log check_host_cpp_condition "$@"
1223     header=$1
1224     condition=$2
1225     shift 2
1226     check_host_cpp "$@" <<EOF
1227 #include <$header>
1228 #if !($condition)
1229 #error "unsatisfied condition: $condition"
1230 #endif
1231 EOF
1232 }
1233
1234 apply(){
1235     file=$1
1236     shift
1237     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1238 }
1239
1240 cp_if_changed(){
1241     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1242     mkdir -p "$(dirname $2)"
1243     $cp_f "$1" "$2"
1244 }
1245
1246 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1247 # system-dependent things.
1248
1249 COMPONENT_LIST="
1250     bsfs
1251     decoders
1252     demuxers
1253     encoders
1254     filters
1255     hwaccels
1256     indevs
1257     muxers
1258     outdevs
1259     parsers
1260     protocols
1261 "
1262
1263 EXAMPLE_LIST="
1264     avio_reading_example
1265     avcodec_example
1266     demuxing_decoding_example
1267     filter_audio_example
1268     filtering_audio_example
1269     filtering_video_example
1270     metadata_example
1271     muxing_example
1272     remuxing_example
1273     resampling_audio_example
1274     scaling_video_example
1275     transcode_aac_example
1276     transcoding_example
1277 "
1278
1279 EXTERNAL_LIBRARY_LIST="
1280     avisynth
1281     bzlib
1282     crystalhd
1283     decklink
1284     fontconfig
1285     frei0r
1286     gnutls
1287     iconv
1288     ladspa
1289     libaacplus
1290     libass
1291     libbluray
1292     libcaca
1293     libcdio
1294     libcelt
1295     libdc1394
1296     libfaac
1297     libfdk_aac
1298     libflite
1299     libfreetype
1300     libgme
1301     libgsm
1302     libiec61883
1303     libilbc
1304     libmodplug
1305     libmp3lame
1306     libnut
1307     libopencore_amrnb
1308     libopencore_amrwb
1309     libopencv
1310     libopenjpeg
1311     libopus
1312     libpulse
1313     libquvi
1314     librtmp
1315     libschroedinger
1316     libshine
1317     libsoxr
1318     libspeex
1319     libssh
1320     libstagefright_h264
1321     libtheora
1322     libtwolame
1323     libutvideo
1324     libv4l2
1325     libvidstab
1326     libvo_aacenc
1327     libvo_amrwbenc
1328     libvorbis
1329     libvpx
1330     libwavpack
1331     libwebp
1332     libx264
1333     libx265
1334     libxavs
1335     libxvid
1336     libzmq
1337     libzvbi
1338     openal
1339     opencl
1340     opengl
1341     openssl
1342     x11grab
1343     xlib
1344     zlib
1345 "
1346
1347 DOCUMENT_LIST="
1348     doc
1349     htmlpages
1350     manpages
1351     podpages
1352     txtpages
1353 "
1354
1355 FEATURE_LIST="
1356     ftrapv
1357     gray
1358     hardcoded_tables
1359     runtime_cpudetect
1360     safe_bitstream_reader
1361     shared
1362     small
1363     sram
1364     static
1365     swscale_alpha
1366 "
1367
1368 HWACCEL_LIST="
1369     dxva2
1370     vaapi
1371     vda
1372     vdpau
1373     xvmc
1374 "
1375
1376 LIBRARY_LIST="
1377     avcodec
1378     avdevice
1379     avfilter
1380     avformat
1381     avresample
1382     avutil
1383     postproc
1384     swresample
1385     swscale
1386 "
1387
1388 LICENSE_LIST="
1389     gpl
1390     nonfree
1391     version3
1392 "
1393
1394 PROGRAM_LIST="
1395     ffplay
1396     ffprobe
1397     ffserver
1398     ffmpeg
1399 "
1400
1401 SUBSYSTEM_LIST="
1402     dct
1403     dwt
1404     error_resilience
1405     fast_unaligned
1406     fft
1407     lsp
1408     lzo
1409     mdct
1410     network
1411     rdft
1412 "
1413
1414 CONFIG_LIST="
1415     $COMPONENT_LIST
1416     $DOCUMENT_LIST
1417     $EXAMPLE_LIST
1418     $EXTERNAL_LIBRARY_LIST
1419     $FEATURE_LIST
1420     $HWACCEL_LIST
1421     $LICENSE_LIST
1422     $LIBRARY_LIST
1423     $PROGRAM_LIST
1424     $SUBSYSTEM_LIST
1425     incompatible_libav_abi
1426     incompatible_fork_abi
1427     memalign_hack
1428     memory_poisoning
1429     neon_clobber_test
1430     pic
1431     pod2man
1432     raise_major
1433     thumb
1434     xmm_clobber_test
1435 "
1436
1437 THREADS_LIST="
1438     pthreads
1439     os2threads
1440     w32threads
1441 "
1442
1443 ATOMICS_LIST="
1444     atomics_gcc
1445     atomics_suncc
1446     atomics_win32
1447 "
1448
1449 ARCH_LIST="
1450     aarch64
1451     alpha
1452     arm
1453     avr32
1454     avr32_ap
1455     avr32_uc
1456     bfin
1457     ia64
1458     m68k
1459     mips
1460     mips64
1461     parisc
1462     ppc
1463     ppc64
1464     s390
1465     sh4
1466     sparc
1467     sparc64
1468     tilegx
1469     tilepro
1470     tomi
1471     x86
1472     x86_32
1473     x86_64
1474 "
1475
1476 ARCH_EXT_LIST_ARM="
1477     armv5te
1478     armv6
1479     armv6t2
1480     neon
1481     vfp
1482     vfpv3
1483 "
1484
1485 ARCH_EXT_LIST_MIPS="
1486     mipsfpu
1487     mips32r2
1488     mipsdspr1
1489     mipsdspr2
1490 "
1491
1492 ARCH_EXT_LIST_X86_SIMD="
1493     amd3dnow
1494     amd3dnowext
1495     avx
1496     avx2
1497     fma3
1498     fma4
1499     mmx
1500     mmxext
1501     sse
1502     sse2
1503     sse3
1504     sse4
1505     sse42
1506     ssse3
1507     xop
1508 "
1509
1510 ARCH_EXT_LIST_PPC="
1511     altivec
1512     dcbzl
1513     ldbrx
1514     ppc4xx
1515 "
1516
1517 ARCH_EXT_LIST_X86="
1518     $ARCH_EXT_LIST_X86_SIMD
1519     cpunop
1520     i686
1521 "
1522
1523 ARCH_EXT_LIST="
1524     $ARCH_EXT_LIST_ARM
1525     $ARCH_EXT_LIST_PPC
1526     $ARCH_EXT_LIST_X86
1527     $ARCH_EXT_LIST_MIPS
1528     loongson
1529 "
1530
1531 ARCH_FEATURES="
1532     aligned_stack
1533     fast_64bit
1534     fast_clz
1535     fast_cmov
1536     local_aligned_8
1537     local_aligned_16
1538 "
1539
1540 BUILTIN_LIST="
1541     atomic_cas_ptr
1542     machine_rw_barrier
1543     MemoryBarrier
1544     mm_empty
1545     rdtsc
1546     sarestart
1547     sync_val_compare_and_swap
1548 "
1549 HAVE_LIST_CMDLINE="
1550     inline_asm
1551     symver
1552     yasm
1553 "
1554
1555 HAVE_LIST_PUB="
1556     bigendian
1557     fast_unaligned
1558     incompatible_libav_abi
1559     incompatible_fork_abi
1560 "
1561
1562 HEADERS_LIST="
1563     alsa_asoundlib_h
1564     altivec_h
1565     arpa_inet_h
1566     asm_types_h
1567     cdio_paranoia_h
1568     cdio_paranoia_paranoia_h
1569     CL_cl_h
1570     dev_bktr_ioctl_bt848_h
1571     dev_bktr_ioctl_meteor_h
1572     dev_ic_bt8xx_h
1573     dev_video_bktr_ioctl_bt848_h
1574     dev_video_meteor_ioctl_meteor_h
1575     direct_h
1576     dlfcn_h
1577     dxva_h
1578     ES2_gl_h
1579     gsm_h
1580     io_h
1581     mach_mach_time_h
1582     machine_ioctl_bt848_h
1583     machine_ioctl_meteor_h
1584     malloc_h
1585     openjpeg_1_5_openjpeg_h
1586     OpenGL_gl3_h
1587     poll_h
1588     sndio_h
1589     soundcard_h
1590     sys_mman_h
1591     sys_param_h
1592     sys_resource_h
1593     sys_select_h
1594     sys_soundcard_h
1595     sys_time_h
1596     sys_un_h
1597     sys_videoio_h
1598     termios_h
1599     unistd_h
1600     windows_h
1601     winsock2_h
1602 "
1603
1604 MATH_FUNCS="
1605     atanf
1606     atan2f
1607     cbrt
1608     cbrtf
1609     cosf
1610     exp2
1611     exp2f
1612     expf
1613     isinf
1614     isnan
1615     ldexpf
1616     llrint
1617     llrintf
1618     log2
1619     log2f
1620     log10f
1621     lrint
1622     lrintf
1623     powf
1624     rint
1625     round
1626     roundf
1627     sinf
1628     trunc
1629     truncf
1630 "
1631
1632 SYSTEM_FUNCS="
1633     access
1634     aligned_malloc
1635     clock_gettime
1636     closesocket
1637     CommandLineToArgvW
1638     CryptGenRandom
1639     dlopen
1640     fcntl
1641     flt_lim
1642     fork
1643     getaddrinfo
1644     gethrtime
1645     getopt
1646     GetProcessAffinityMask
1647     GetProcessMemoryInfo
1648     GetProcessTimes
1649     getrusage
1650     getservbyport
1651     GetSystemTimeAsFileTime
1652     gettimeofday
1653     glob
1654     glXGetProcAddress
1655     inet_aton
1656     isatty
1657     jack_port_get_latency_range
1658     kbhit
1659     localtime_r
1660     lzo1x_999_compress
1661     mach_absolute_time
1662     MapViewOfFile
1663     memalign
1664     mkstemp
1665     mmap
1666     mprotect
1667     nanosleep
1668     PeekNamedPipe
1669     posix_memalign
1670     pthread_cancel
1671     sched_getaffinity
1672     SetConsoleTextAttribute
1673     setmode
1674     setrlimit
1675     Sleep
1676     strerror_r
1677     sysconf
1678     sysctl
1679     usleep
1680     VirtualAlloc
1681     wglGetProcAddress
1682 "
1683
1684 TOOLCHAIN_FEATURES="
1685     asm_mod_q
1686     attribute_may_alias
1687     attribute_packed
1688     ebp_available
1689     ebx_available
1690     gnu_as
1691     gnu_windres
1692     ibm_asm
1693     inline_asm_labels
1694     inline_asm_nonlocal_labels
1695     inline_asm_direct_symbol_refs
1696     pragma_deprecated
1697     rsync_contimeout
1698     symver_asm_label
1699     symver_gnu_asm
1700     vfp_args
1701     xform_asm
1702     xmm_clobbers
1703 "
1704
1705 TYPES_LIST="
1706     socklen_t
1707     struct_addrinfo
1708     struct_group_source_req
1709     struct_ip_mreq_source
1710     struct_ipv6_mreq
1711     struct_pollfd
1712     struct_rusage_ru_maxrss
1713     struct_sctp_event_subscribe
1714     struct_sockaddr_in6
1715     struct_sockaddr_sa_len
1716     struct_sockaddr_storage
1717     struct_stat_st_mtim_tv_nsec
1718     struct_v4l2_frmivalenum_discrete
1719 "
1720
1721 HAVE_LIST="
1722     $ARCH_EXT_LIST
1723     $(add_suffix _external $ARCH_EXT_LIST)
1724     $(add_suffix _inline   $ARCH_EXT_LIST)
1725     $ARCH_FEATURES
1726     $ATOMICS_LIST
1727     $BUILTIN_LIST
1728     $HAVE_LIST_CMDLINE
1729     $HAVE_LIST_PUB
1730     $HEADERS_LIST
1731     $MATH_FUNCS
1732     $SYSTEM_FUNCS
1733     $THREADS_LIST
1734     $TOOLCHAIN_FEATURES
1735     $TYPES_LIST
1736     atomics_native
1737     dos_paths
1738     libc_msvcrt
1739     libdc1394_1
1740     libdc1394_2
1741     makeinfo
1742     perl
1743     pod2man
1744     sdl
1745     texi2html
1746     threads
1747     vdpau_x11
1748     xlib
1749 "
1750
1751 # options emitted with CONFIG_ prefix but not available on the command line
1752 CONFIG_EXTRA="
1753     aandcttables
1754     ac3dsp
1755     audio_frame_queue
1756     cabac
1757     dsputil
1758     exif
1759     frame_thread_encoder
1760     gcrypt
1761     golomb
1762     gplv3
1763     h263dsp
1764     h264chroma
1765     h264dsp
1766     h264pred
1767     h264qpel
1768     hpeldsp
1769     huffman
1770     intrax8
1771     lgplv3
1772     llviddsp
1773     lpc
1774     mpegaudio
1775     mpegaudiodsp
1776     mpegvideo
1777     mpegvideoenc
1778     nettle
1779     rangecoder
1780     riffdec
1781     riffenc
1782     rtpdec
1783     rtpenc_chain
1784     sinewin
1785     tpeldsp
1786     videodsp
1787     vp3dsp
1788 "
1789
1790 CMDLINE_SELECT="
1791     $ARCH_EXT_LIST
1792     $CONFIG_LIST
1793     $HAVE_LIST_CMDLINE
1794     $THREADS_LIST
1795     asm
1796     cross_compile
1797     debug
1798     extra_warnings
1799     logging
1800     lto
1801     optimizations
1802     rpath
1803     stripping
1804 "
1805
1806 PATHS_LIST="
1807     bindir
1808     datadir
1809     docdir
1810     incdir
1811     libdir
1812     mandir
1813     prefix
1814     shlibdir
1815 "
1816
1817 CMDLINE_SET="
1818     $PATHS_LIST
1819     ar
1820     arch
1821     as
1822     assert_level
1823     build_suffix
1824     cc
1825     cpu
1826     cross_prefix
1827     cxx
1828     dep_cc
1829     extra_version
1830     host_cc
1831     host_cflags
1832     host_ld
1833     host_ldflags
1834     host_libs
1835     host_os
1836     install
1837     ld
1838     logfile
1839     malloc_prefix
1840     nm
1841     optflags
1842     pkg_config
1843     pkg_config_flags
1844     progs_suffix
1845     random_seed
1846     samples
1847     strip
1848     sysinclude
1849     sysroot
1850     target_exec
1851     target_os
1852     target_path
1853     target_samples
1854     tempprefix
1855     toolchain
1856     valgrind
1857     yasmexe
1858 "
1859
1860 CMDLINE_APPEND="
1861     extra_cflags
1862     extra_cxxflags
1863     host_cppflags
1864 "
1865
1866 # code dependency declarations
1867
1868 # architecture extensions
1869
1870 armv5te_deps="arm"
1871 armv6_deps="arm"
1872 armv6t2_deps="arm"
1873 neon_deps_any="aarch64 arm"
1874 vfp_deps_any="aarch64 arm"
1875 vfpv3_deps="vfp"
1876
1877 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1878
1879 mipsfpu_deps="mips"
1880 mips32r2_deps="mips"
1881 mipsdspr1_deps="mips"
1882 mipsdspr2_deps="mips"
1883
1884 altivec_deps="ppc"
1885 ppc4xx_deps="ppc"
1886
1887 cpunop_deps="i686"
1888 x86_64_select="i686"
1889 x86_64_suggest="fast_cmov"
1890
1891 amd3dnow_deps="mmx"
1892 amd3dnowext_deps="amd3dnow"
1893 i686_deps="x86"
1894 mmx_deps="x86"
1895 mmxext_deps="mmx"
1896 sse_deps="mmxext"
1897 sse2_deps="sse"
1898 sse3_deps="sse2"
1899 ssse3_deps="sse3"
1900 sse4_deps="ssse3"
1901 sse42_deps="sse4"
1902 avx_deps="sse42"
1903 xop_deps="avx"
1904 fma3_deps="avx"
1905 fma4_deps="avx"
1906 avx2_deps="avx"
1907
1908 mmx_external_deps="yasm"
1909 mmx_inline_deps="inline_asm"
1910 mmx_suggest="mmx_external mmx_inline"
1911
1912 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1913     eval dep=\$${ext}_deps
1914     eval ${ext}_external_deps='"${dep}_external"'
1915     eval ${ext}_inline_deps='"${dep}_inline"'
1916     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1917 done
1918
1919 aligned_stack_if_any="aarch64 ppc x86"
1920 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1921 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1922 fast_unaligned_if_any="aarch64 ppc x86"
1923
1924 need_memalign="altivec neon sse"
1925
1926 # system capabilities
1927 log2_deps="!libc_msvcrt"
1928
1929 symver_if_any="symver_asm_label symver_gnu_asm"
1930
1931 # threading support
1932 atomics_gcc_if="sync_val_compare_and_swap"
1933 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1934 atomics_win32_if="MemoryBarrier"
1935 atomics_native_if_any="$ATOMICS_LIST"
1936 w32threads_deps="atomics_native"
1937 threads_if_any="$THREADS_LIST"
1938
1939 # subsystems
1940 dct_select="rdft"
1941 error_resilience_select="dsputil"
1942 frame_thread_encoder_deps="encoders threads"
1943 mdct_select="fft"
1944 rdft_select="fft"
1945 mpegaudio_select="mpegaudiodsp"
1946 mpegaudiodsp_select="dct"
1947 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1948 mpegvideoenc_select="dsputil mpegvideo"
1949
1950 # decoders / encoders
1951 aac_decoder_select="mdct sinewin"
1952 aac_encoder_select="audio_frame_queue mdct sinewin"
1953 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1954 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1955 ac3_encoder_select="mdct ac3dsp dsputil"
1956 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1957 aic_decoder_select="dsputil golomb"
1958 alac_encoder_select="lpc"
1959 als_decoder_select="dsputil"
1960 amrnb_decoder_select="lsp"
1961 amrwb_decoder_select="lsp"
1962 amv_decoder_select="sp5x_decoder exif"
1963 amv_encoder_select="aandcttables"
1964 ape_decoder_select="dsputil"
1965 asv1_decoder_select="dsputil"
1966 asv1_encoder_select="dsputil"
1967 asv2_decoder_select="dsputil"
1968 asv2_encoder_select="dsputil"
1969 atrac1_decoder_select="mdct sinewin"
1970 atrac3_decoder_select="mdct"
1971 atrac3p_decoder_select="mdct sinewin"
1972 avrn_decoder_select="exif"
1973 bink_decoder_select="dsputil hpeldsp"
1974 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1975 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1976 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1977 cllc_decoder_select="dsputil"
1978 comfortnoise_encoder_select="lpc"
1979 cook_decoder_select="dsputil mdct sinewin"
1980 cscd_decoder_select="lzo"
1981 cscd_decoder_suggest="zlib"
1982 dca_decoder_select="mdct"
1983 dirac_decoder_select="dsputil dwt golomb videodsp"
1984 dnxhd_decoder_select="dsputil"
1985 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1986 dvvideo_decoder_select="dsputil"
1987 dvvideo_encoder_select="dsputil"
1988 dxa_decoder_select="zlib"
1989 eac3_decoder_select="ac3_decoder"
1990 eac3_encoder_select="ac3_encoder"
1991 eamad_decoder_select="aandcttables dsputil mpegvideo"
1992 eatgq_decoder_select="aandcttables"
1993 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
1994 exr_decoder_select="zlib"
1995 ffv1_decoder_select="golomb rangecoder"
1996 ffv1_encoder_select="rangecoder"
1997 ffvhuff_decoder_select="huffyuv_decoder"
1998 ffvhuff_encoder_select="huffyuv_encoder"
1999 fic_decoder_select="dsputil golomb"
2000 flac_decoder_select="golomb"
2001 flac_encoder_select="dsputil golomb lpc"
2002 flashsv_decoder_select="zlib"
2003 flashsv_encoder_select="zlib"
2004 flashsv2_encoder_select="zlib"
2005 flashsv2_decoder_select="zlib"
2006 flv_decoder_select="h263_decoder"
2007 flv_encoder_select="h263_encoder"
2008 fourxm_decoder_select="dsputil"
2009 fraps_decoder_select="dsputil huffman"
2010 g2m_decoder_select="dsputil zlib"
2011 g729_decoder_select="dsputil"
2012 h261_decoder_select="error_resilience mpegvideo"
2013 h261_encoder_select="aandcttables mpegvideoenc"
2014 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2015 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2016 h263i_decoder_select="h263_decoder"
2017 h263p_encoder_select="h263_encoder"
2018 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2019 h264_decoder_suggest="error_resilience"
2020 hevc_decoder_select="cabac dsputil golomb videodsp"
2021 huffyuv_decoder_select="dsputil llviddsp"
2022 huffyuv_encoder_select="dsputil huffman llviddsp"
2023 iac_decoder_select="imc_decoder"
2024 imc_decoder_select="dsputil fft mdct sinewin"
2025 indeo3_decoder_select="hpeldsp"
2026 interplay_video_decoder_select="hpeldsp"
2027 jpegls_decoder_select="golomb mjpeg_decoder"
2028 jpegls_encoder_select="golomb"
2029 jv_decoder_select="dsputil"
2030 lagarith_decoder_select="dsputil"
2031 ljpeg_encoder_select="aandcttables mpegvideoenc"
2032 loco_decoder_select="golomb"
2033 mdec_decoder_select="dsputil error_resilience mpegvideo"
2034 metasound_decoder_select="lsp mdct sinewin"
2035 mimic_decoder_select="dsputil hpeldsp"
2036 mjpeg_decoder_select="dsputil hpeldsp exif"
2037 mjpeg_encoder_select="aandcttables mpegvideoenc"
2038 mjpegb_decoder_select="mjpeg_decoder"
2039 mlp_decoder_select="mlp_parser"
2040 motionpixels_decoder_select="dsputil"
2041 mp1_decoder_select="mpegaudio"
2042 mp1float_decoder_select="mpegaudio"
2043 mp2_decoder_select="mpegaudio"
2044 mp2float_decoder_select="mpegaudio"
2045 mp3_decoder_select="mpegaudio"
2046 mp3adu_decoder_select="mpegaudio"
2047 mp3adufloat_decoder_select="mpegaudio"
2048 mp3float_decoder_select="mpegaudio"
2049 mp3on4_decoder_select="mpegaudio"
2050 mp3on4float_decoder_select="mpegaudio"
2051 mpc7_decoder_select="dsputil mpegaudiodsp"
2052 mpc8_decoder_select="mpegaudiodsp"
2053 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2054 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2055 mpeg1video_decoder_select="error_resilience mpegvideo"
2056 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2057 mpeg2video_decoder_select="error_resilience mpegvideo"
2058 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2059 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2060 mpeg4_encoder_select="h263_encoder"
2061 msmpeg4v1_decoder_select="h263_decoder"
2062 msmpeg4v2_decoder_select="h263_decoder"
2063 msmpeg4v2_encoder_select="h263_encoder"
2064 msmpeg4v3_decoder_select="h263_decoder"
2065 msmpeg4v3_encoder_select="h263_encoder"
2066 mss2_decoder_select="error_resilience vc1_decoder"
2067 mxpeg_decoder_select="mjpeg_decoder"
2068 nellymoser_decoder_select="mdct sinewin"
2069 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2070 nuv_decoder_select="dsputil lzo"
2071 png_decoder_select="zlib"
2072 png_encoder_select="dsputil zlib"
2073 prores_decoder_select="dsputil"
2074 prores_encoder_select="dsputil"
2075 qcelp_decoder_select="lsp"
2076 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2077 ra_144_encoder_select="audio_frame_queue lpc"
2078 ralf_decoder_select="golomb"
2079 rtjpeg_decoder_select="dsputil"
2080 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2081 rv10_encoder_select="h263_encoder"
2082 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2083 rv20_encoder_select="h263_encoder"
2084 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2085 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2086 shorten_decoder_select="golomb"
2087 sipr_decoder_select="lsp"
2088 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2089 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2090 sonic_decoder_select="golomb rangecoder"
2091 sonic_encoder_select="golomb rangecoder"
2092 sonic_ls_encoder_select="golomb"
2093 sp5x_decoder_select="mjpeg_decoder"
2094 svq1_decoder_select="hpeldsp"
2095 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2096 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2097 svq3_decoder_suggest="zlib"
2098 tak_decoder_select="dsputil"
2099 theora_decoder_select="vp3_decoder"
2100 thp_decoder_select="mjpeg_decoder"
2101 tiff_decoder_suggest="zlib"
2102 tiff_encoder_suggest="zlib"
2103 truehd_decoder_select="mlp_parser"
2104 truemotion2_decoder_select="dsputil"
2105 truespeech_decoder_select="dsputil"
2106 tscc_decoder_select="zlib"
2107 twinvq_decoder_select="mdct lsp sinewin"
2108 utvideo_decoder_select="dsputil"
2109 utvideo_encoder_select="dsputil huffman"
2110 vble_decoder_select="dsputil"
2111 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2112 vc1image_decoder_select="vc1_decoder"
2113 vorbis_decoder_select="mdct"
2114 vorbis_encoder_select="mdct"
2115 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2116 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2117 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2118 vp6a_decoder_select="vp6_decoder"
2119 vp6f_decoder_select="vp6_decoder"
2120 vp7_decoder_select="h264pred videodsp"
2121 vp8_decoder_select="h264pred videodsp"
2122 vp9_decoder_select="videodsp"
2123 webp_decoder_select="vp8_decoder"
2124 wmapro_decoder_select="mdct sinewin"
2125 wmav1_decoder_select="mdct sinewin"
2126 wmav1_encoder_select="mdct sinewin"
2127 wmav2_decoder_select="mdct sinewin"
2128 wmav2_encoder_select="mdct sinewin"
2129 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2130 wmv1_decoder_select="h263_decoder"
2131 wmv1_encoder_select="h263_encoder"
2132 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2133 wmv2_encoder_select="h263_encoder"
2134 wmv3_decoder_select="vc1_decoder"
2135 wmv3image_decoder_select="wmv3_decoder"
2136 zerocodec_decoder_select="zlib"
2137 zlib_decoder_select="zlib"
2138 zlib_encoder_select="zlib"
2139 zmbv_decoder_select="zlib"
2140 zmbv_encoder_select="zlib"
2141
2142 # hardware accelerators
2143 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2144 dxva2_deps="dxva2api_h"
2145 vaapi_deps="va_va_h"
2146 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2147 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2148 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2149 xvmc_deps="X11_extensions_XvMClib_h"
2150
2151 h263_vaapi_hwaccel_deps="vaapi"
2152 h263_vaapi_hwaccel_select="h263_decoder"
2153 h263_vdpau_hwaccel_deps="vdpau"
2154 h263_vdpau_hwaccel_select="h263_decoder"
2155 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2156 h264_dxva2_hwaccel_deps="dxva2"
2157 h264_dxva2_hwaccel_select="h264_decoder"
2158 h264_vaapi_hwaccel_deps="vaapi"
2159 h264_vaapi_hwaccel_select="h264_decoder"
2160 h264_vda_decoder_deps="vda"
2161 h264_vda_decoder_select="h264_decoder"
2162 h264_vda_hwaccel_deps="vda"
2163 h264_vda_hwaccel_select="h264_decoder"
2164 h264_vdpau_decoder_deps="vdpau"
2165 h264_vdpau_decoder_select="h264_decoder"
2166 h264_vdpau_hwaccel_deps="vdpau"
2167 h264_vdpau_hwaccel_select="h264_decoder"
2168 mpeg_vdpau_decoder_deps="vdpau"
2169 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2170 mpeg_xvmc_hwaccel_deps="xvmc"
2171 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2172 mpeg1_vdpau_decoder_deps="vdpau"
2173 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2174 mpeg1_vdpau_hwaccel_deps="vdpau"
2175 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2176 mpeg1_xvmc_hwaccel_deps="xvmc"
2177 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2178 mpeg2_crystalhd_decoder_select="crystalhd"
2179 mpeg2_dxva2_hwaccel_deps="dxva2"
2180 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2181 mpeg2_vaapi_hwaccel_deps="vaapi"
2182 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2183 mpeg2_vdpau_hwaccel_deps="vdpau"
2184 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2185 mpeg2_xvmc_hwaccel_deps="xvmc"
2186 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2187 mpeg4_crystalhd_decoder_select="crystalhd"
2188 mpeg4_vaapi_hwaccel_deps="vaapi"
2189 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2190 mpeg4_vdpau_decoder_deps="vdpau"
2191 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2192 mpeg4_vdpau_hwaccel_deps="vdpau"
2193 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2194 msmpeg4_crystalhd_decoder_select="crystalhd"
2195 vc1_crystalhd_decoder_select="crystalhd"
2196 vc1_dxva2_hwaccel_deps="dxva2"
2197 vc1_dxva2_hwaccel_select="vc1_decoder"
2198 vc1_vaapi_hwaccel_deps="vaapi"
2199 vc1_vaapi_hwaccel_select="vc1_decoder"
2200 vc1_vdpau_decoder_deps="vdpau"
2201 vc1_vdpau_decoder_select="vc1_decoder"
2202 vc1_vdpau_hwaccel_deps="vdpau"
2203 vc1_vdpau_hwaccel_select="vc1_decoder"
2204 wmv3_crystalhd_decoder_select="crystalhd"
2205 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2206 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2207 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2208 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2209
2210 # parsers
2211 h264_parser_select="h264_decoder"
2212 hevc_parser_select="hevc_decoder"
2213 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2214 mpegvideo_parser_select="error_resilience mpegvideo"
2215 vc1_parser_select="mpegvideo"
2216
2217 # external libraries
2218 libaacplus_encoder_deps="libaacplus"
2219 libcelt_decoder_deps="libcelt"
2220 libfaac_encoder_deps="libfaac"
2221 libfaac_encoder_select="audio_frame_queue"
2222 libfdk_aac_decoder_deps="libfdk_aac"
2223 libfdk_aac_encoder_deps="libfdk_aac"
2224 libfdk_aac_encoder_select="audio_frame_queue"
2225 libgme_demuxer_deps="libgme"
2226 libgsm_decoder_deps="libgsm"
2227 libgsm_encoder_deps="libgsm"
2228 libgsm_ms_decoder_deps="libgsm"
2229 libgsm_ms_encoder_deps="libgsm"
2230 libilbc_decoder_deps="libilbc"
2231 libilbc_encoder_deps="libilbc"
2232 libmodplug_demuxer_deps="libmodplug"
2233 libmp3lame_encoder_deps="libmp3lame"
2234 libmp3lame_encoder_select="audio_frame_queue"
2235 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2236 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2237 libopencore_amrnb_encoder_select="audio_frame_queue"
2238 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2239 libopenjpeg_decoder_deps="libopenjpeg"
2240 libopenjpeg_encoder_deps="libopenjpeg"
2241 libopus_decoder_deps="libopus"
2242 libopus_encoder_deps="libopus"
2243 libopus_encoder_select="audio_frame_queue"
2244 libquvi_demuxer_deps="libquvi"
2245 libschroedinger_decoder_deps="libschroedinger"
2246 libschroedinger_encoder_deps="libschroedinger"
2247 libshine_encoder_deps="libshine"
2248 libshine_encoder_select="audio_frame_queue"
2249 libspeex_decoder_deps="libspeex"
2250 libspeex_encoder_deps="libspeex"
2251 libspeex_encoder_select="audio_frame_queue"
2252 libstagefright_h264_decoder_deps="libstagefright_h264"
2253 libtheora_encoder_deps="libtheora"
2254 libtwolame_encoder_deps="libtwolame"
2255 libvo_aacenc_encoder_deps="libvo_aacenc"
2256 libvo_aacenc_encoder_select="audio_frame_queue"
2257 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2258 libvorbis_decoder_deps="libvorbis"
2259 libvorbis_encoder_deps="libvorbis"
2260 libvorbis_encoder_select="audio_frame_queue"
2261 libvpx_vp8_decoder_deps="libvpx"
2262 libvpx_vp8_encoder_deps="libvpx"
2263 libvpx_vp9_decoder_deps="libvpx"
2264 libvpx_vp9_encoder_deps="libvpx"
2265 libwavpack_encoder_deps="libwavpack"
2266 libwebp_encoder_deps="libwebp"
2267 libx264_encoder_deps="libx264"
2268 libx264rgb_encoder_deps="libx264"
2269 libx265_encoder_deps="libx265"
2270 libxavs_encoder_deps="libxavs"
2271 libxvid_encoder_deps="libxvid"
2272 libutvideo_decoder_deps="libutvideo"
2273 libutvideo_encoder_deps="libutvideo"
2274 libzvbi_teletext_decoder_deps="libzvbi"
2275
2276 # demuxers / muxers
2277 ac3_demuxer_select="ac3_parser"
2278 asf_demuxer_select="riffdec"
2279 asf_muxer_select="riffenc"
2280 asf_stream_muxer_select="asf_muxer"
2281 avi_demuxer_select="riffdec"
2282 avi_muxer_select="riffenc"
2283 avisynth_demuxer_deps="avisynth"
2284 avisynth_demuxer_select="riffdec"
2285 caf_demuxer_select="riffdec"
2286 dirac_demuxer_select="dirac_parser"
2287 dts_demuxer_select="dca_parser"
2288 dtshd_demuxer_select="dca_parser"
2289 dxa_demuxer_select="riffdec"
2290 eac3_demuxer_select="ac3_parser"
2291 f4v_muxer_select="mov_muxer"
2292 flac_demuxer_select="flac_parser"
2293 hds_muxer_select="flv_muxer"
2294 hls_muxer_select="mpegts_muxer"
2295 ipod_muxer_select="mov_muxer"
2296 ismv_muxer_select="mov_muxer"
2297 libnut_demuxer_deps="libnut"
2298 libnut_muxer_deps="libnut"
2299 matroska_audio_muxer_select="matroska_muxer"
2300 matroska_demuxer_select="riffdec"
2301 matroska_demuxer_suggest="bzlib lzo zlib"
2302 matroska_muxer_select="riffenc"
2303 mmf_muxer_select="riffenc"
2304 mov_demuxer_select="riffdec"
2305 mov_demuxer_suggest="zlib"
2306 mov_muxer_select="riffenc rtpenc_chain"
2307 mp3_demuxer_select="mpegaudio_parser"
2308 mp4_muxer_select="mov_muxer"
2309 mpegts_muxer_select="adts_muxer latm_muxer"
2310 mpegtsraw_demuxer_select="mpegts_demuxer"
2311 mxf_d10_muxer_select="mxf_muxer"
2312 nut_muxer_select="riffenc"
2313 nuv_demuxer_select="riffdec"
2314 ogg_demuxer_select="golomb"
2315 psp_muxer_select="mov_muxer"
2316 rtp_demuxer_select="sdp_demuxer"
2317 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2318 rtsp_demuxer_select="http_protocol rtpdec"
2319 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2320 sap_demuxer_select="sdp_demuxer"
2321 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2322 sdp_demuxer_select="rtpdec"
2323 smoothstreaming_muxer_select="ismv_muxer"
2324 spdif_muxer_select="aac_parser"
2325 tak_demuxer_select="tak_parser"
2326 tg2_muxer_select="mov_muxer"
2327 tgp_muxer_select="mov_muxer"
2328 vobsub_demuxer_select="mpegps_demuxer"
2329 w64_demuxer_select="wav_demuxer"
2330 w64_muxer_select="wav_muxer"
2331 wav_demuxer_select="riffdec"
2332 wav_muxer_select="riffenc"
2333 webm_muxer_select="riffenc"
2334 wtv_demuxer_select="riffdec"
2335 wtv_muxer_select="riffenc"
2336 xmv_demuxer_select="riffdec"
2337 xwma_demuxer_select="riffdec"
2338
2339 # indevs / outdevs
2340 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2341 alsa_outdev_deps="alsa_asoundlib_h"
2342 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2343 caca_outdev_deps="libcaca"
2344 decklink_outdev_deps="decklink pthreads"
2345 decklink_outdev_extralibs="-lstdc++"
2346 dshow_indev_deps="IBaseFilter"
2347 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2348 dv1394_indev_deps="dv1394"
2349 dv1394_indev_select="dv_demuxer"
2350 fbdev_indev_deps="linux_fb_h"
2351 fbdev_outdev_deps="linux_fb_h"
2352 iec61883_indev_deps="libiec61883"
2353 jack_indev_deps="jack_jack_h sem_timedwait"
2354 lavfi_indev_deps="avfilter"
2355 libcdio_indev_deps="libcdio"
2356 libdc1394_indev_deps="libdc1394"
2357 libv4l2_indev_deps="libv4l2"
2358 openal_indev_deps="openal"
2359 opengl_outdev_deps="opengl"
2360 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2361 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2362 pulse_indev_deps="libpulse"
2363 pulse_outdev_deps="libpulse"
2364 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2365 qtkit_indev_select="qtkit"
2366 sdl_outdev_deps="sdl"
2367 sndio_indev_deps="sndio_h"
2368 sndio_outdev_deps="sndio_h"
2369 v4l_indev_deps="linux_videodev_h"
2370 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2371 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2372 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2373 vfwcap_indev_extralibs="-lavicap32"
2374 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2375 xv_outdev_extralibs="-lXv -lX11 -lXext"
2376 x11grab_indev_deps="x11grab"
2377
2378 # protocols
2379 bluray_protocol_deps="libbluray"
2380 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2381 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2382 ffrtmpcrypt_protocol_select="tcp_protocol"
2383 ffrtmphttp_protocol_deps="!librtmp_protocol"
2384 ffrtmphttp_protocol_select="http_protocol"
2385 ftp_protocol_select="tcp_protocol"
2386 gopher_protocol_select="network"
2387 http_protocol_select="tcp_protocol"
2388 httpproxy_protocol_select="tcp_protocol"
2389 https_protocol_select="tls_protocol"
2390 librtmp_protocol_deps="librtmp"
2391 librtmpe_protocol_deps="librtmp"
2392 librtmps_protocol_deps="librtmp"
2393 librtmpt_protocol_deps="librtmp"
2394 librtmpte_protocol_deps="librtmp"
2395 libssh_protocol_deps="libssh"
2396 mmsh_protocol_select="http_protocol"
2397 mmst_protocol_select="network"
2398 rtmp_protocol_deps="!librtmp_protocol"
2399 rtmp_protocol_select="tcp_protocol"
2400 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2401 rtmps_protocol_deps="!librtmp_protocol"
2402 rtmps_protocol_select="tls_protocol"
2403 rtmpt_protocol_select="ffrtmphttp_protocol"
2404 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2405 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2406 rtp_protocol_select="udp_protocol"
2407 sctp_protocol_deps="struct_sctp_event_subscribe"
2408 sctp_protocol_select="network"
2409 srtp_protocol_select="rtp_protocol"
2410 tcp_protocol_select="network"
2411 tls_protocol_deps_any="openssl gnutls"
2412 tls_protocol_select="tcp_protocol"
2413 udp_protocol_select="network"
2414 unix_protocol_deps="sys_un_h"
2415 unix_protocol_select="network"
2416
2417 # filters
2418 aconvert_filter_deps="swresample"
2419 amovie_filter_deps="avcodec avformat"
2420 aresample_filter_deps="swresample"
2421 ass_filter_deps="libass"
2422 asyncts_filter_deps="avresample"
2423 atempo_filter_deps="avcodec"
2424 atempo_filter_select="rdft"
2425 azmq_filter_deps="libzmq"
2426 blackframe_filter_deps="gpl"
2427 boxblur_filter_deps="gpl"
2428 colormatrix_filter_deps="gpl"
2429 cropdetect_filter_deps="gpl"
2430 dctdnoiz_filter_deps="avcodec"
2431 dctdnoiz_filter_select="dct"
2432 delogo_filter_deps="gpl"
2433 deshake_filter_deps="avcodec"
2434 deshake_filter_select="dsputil"
2435 drawtext_filter_deps="libfreetype"
2436 ebur128_filter_deps="gpl"
2437 flite_filter_deps="libflite"
2438 frei0r_filter_deps="frei0r dlopen"
2439 frei0r_filter_extralibs='$ldl'
2440 frei0r_src_filter_deps="frei0r dlopen"
2441 frei0r_src_filter_extralibs='$ldl'
2442 geq_filter_deps="gpl"
2443 histeq_filter_deps="gpl"
2444 hqdn3d_filter_deps="gpl"
2445 interlace_filter_deps="gpl"
2446 kerndeint_filter_deps="gpl"
2447 ladspa_filter_deps="ladspa dlopen"
2448 mcdeint_filter_deps="avcodec gpl"
2449 movie_filter_deps="avcodec avformat"
2450 mp_filter_deps="gpl avcodec swscale inline_asm"
2451 mpdecimate_filter_deps="gpl avcodec"
2452 mptestsrc_filter_deps="gpl"
2453 negate_filter_deps="lut_filter"
2454 perspective_filter_deps="gpl"
2455 ocv_filter_deps="libopencv"
2456 owdenoise_filter_deps="gpl"
2457 pan_filter_deps="swresample"
2458 phase_filter_deps="gpl"
2459 pp_filter_deps="gpl postproc"
2460 pullup_filter_deps="gpl"
2461 removelogo_filter_deps="avcodec avformat swscale"
2462 resample_filter_deps="avresample"
2463 sab_filter_deps="gpl swscale"
2464 scale_filter_deps="swscale"
2465 smartblur_filter_deps="gpl swscale"
2466 showspectrum_filter_deps="avcodec"
2467 showspectrum_filter_select="rdft"
2468 spp_filter_deps="gpl avcodec"
2469 spp_filter_select="fft"
2470 stereo3d_filter_deps="gpl"
2471 subtitles_filter_deps="avformat avcodec libass"
2472 super2xsai_filter_deps="gpl"
2473 tinterlace_filter_deps="gpl"
2474 vidstabdetect_filter_deps="libvidstab"
2475 vidstabtransform_filter_deps="libvidstab"
2476 pixfmts_super2xsai_test_deps="super2xsai_filter"
2477 tinterlace_merge_test_deps="tinterlace_filter"
2478 tinterlace_pad_test_deps="tinterlace_filter"
2479 zmq_filter_deps="libzmq"
2480
2481 # examples
2482 avio_reading="avformat avcodec avutil"
2483 avcodec_example_deps="avcodec avutil"
2484 demuxing_decoding_example_deps="avcodec avformat avutil"
2485 filter_audio_example_deps="avfilter avutil"
2486 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2487 filtering_video_example_deps="avfilter avcodec avformat avutil"
2488 metadata_example_deps="avformat avutil"
2489 muxing_example_deps="avcodec avformat avutil swscale"
2490 remuxing_example_deps="avcodec avformat avutil"
2491 resampling_audio_example_deps="avutil swresample"
2492 scaling_video_example_deps="avutil swscale"
2493 transcode_aac_example_deps="avcodec avformat swresample"
2494 transcoding_example_deps="avfilter avcodec avformat avutil"
2495
2496 # libraries
2497 avcodec_deps="avutil"
2498 avdevice_deps="avutil avcodec avformat"
2499 avfilter_deps="avutil"
2500 avformat_deps="avutil avcodec"
2501 avresample_deps="avutil"
2502 postproc_deps="avutil gpl"
2503 swscale_deps="avutil"
2504
2505 # programs
2506 ffmpeg_deps="avcodec avfilter avformat swresample"
2507 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2508                null_filter
2509                setpts_filter trim_filter"
2510 ffplay_deps="avcodec avformat swscale swresample sdl"
2511 ffplay_libs='$sdl_libs'
2512 ffplay_select="rdft crop_filter"
2513 ffprobe_deps="avcodec avformat"
2514 ffserver_deps="avformat fork sarestart"
2515 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2516
2517 # documentation
2518 podpages_deps="perl"
2519 manpages_deps="perl pod2man"
2520 htmlpages_deps="perl texi2html"
2521 txtpages_deps="perl makeinfo"
2522 doc_deps_any="manpages htmlpages podpages txtpages"
2523
2524 # default parameters
2525
2526 logfile="config.log"
2527
2528 # installation paths
2529 prefix_default="/usr/local"
2530 bindir_default='${prefix}/bin'
2531 datadir_default='${prefix}/share/ffmpeg'
2532 docdir_default='${prefix}/share/doc/ffmpeg'
2533 incdir_default='${prefix}/include'
2534 libdir_default='${prefix}/lib'
2535 mandir_default='${prefix}/share/man'
2536 shlibdir_default="$libdir_default"
2537
2538 # toolchain
2539 ar_default="ar"
2540 cc_default="gcc"
2541 cxx_default="g++"
2542 host_cc_default="gcc"
2543 cp_f="cp -f"
2544 install="install"
2545 ln_s="ln -s -f"
2546 nm_default="nm -g"
2547 objformat="elf"
2548 pkg_config_default=pkg-config
2549 ranlib="ranlib"
2550 strip_default="strip"
2551 yasmexe_default="yasm"
2552 windres_default="windres"
2553
2554 nogas=":"
2555
2556 # OS
2557 target_os_default=$(tolower $(uname -s))
2558 host_os=$target_os_default
2559
2560 # machine
2561 if test "$target_os_default" = aix; then
2562     arch_default=$(uname -p)
2563 else
2564     arch_default=$(uname -m)
2565 fi
2566 cpu="generic"
2567
2568 # configurable options
2569 enable $PROGRAM_LIST
2570 enable $DOCUMENT_LIST
2571 enable $EXAMPLE_LIST
2572 enable $(filter_out avresample $LIBRARY_LIST)
2573 enable stripping
2574
2575 enable asm
2576 enable debug
2577 enable doc
2578 enable optimizations
2579 enable runtime_cpudetect
2580 enable safe_bitstream_reader
2581 enable static
2582 enable swscale_alpha
2583
2584 # Enable hwaccels by default.
2585 enable dxva2 vaapi vda vdpau xvmc
2586 enable xlib
2587
2588 # build settings
2589 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2590 LIBPREF="lib"
2591 LIBSUF=".a"
2592 FULLNAME='$(NAME)$(BUILDSUF)'
2593 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2594 SLIBPREF="lib"
2595 SLIBSUF=".so"
2596 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2597 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2598 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2599 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2600 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2601 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2602
2603 asflags_filter=echo
2604 cflags_filter=echo
2605 ldflags_filter=echo
2606
2607 AS_C='-c'
2608 AS_O='-o $@'
2609 CC_C='-c'
2610 CC_E='-E -o $@'
2611 CC_O='-o $@'
2612 CXX_C='-c'
2613 CXX_O='-o $@'
2614 LD_O='-o $@'
2615 LD_LIB='-l%'
2616 LD_PATH='-L'
2617 HOSTCC_C='-c'
2618 HOSTCC_E='-E -o $@'
2619 HOSTCC_O='-o $@'
2620 HOSTLD_O='-o $@'
2621
2622 host_libs='-lm'
2623 host_cflags_filter=echo
2624 host_ldflags_filter=echo
2625
2626 target_path='$(CURDIR)'
2627
2628 # since the object filename is not given with the -MM flag, the compiler
2629 # is only able to print the basename, and we must add the path ourselves
2630 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2631 DEPFLAGS='-MM'
2632
2633 # find source path
2634 if test -f configure; then
2635     source_path=.
2636 else
2637     source_path=$(cd $(dirname "$0"); pwd)
2638     echo "$source_path" | grep -q '[[:blank:]]' &&
2639         die "Out of tree builds are impossible with whitespace in source path."
2640     test -e "$source_path/config.h" &&
2641         die "Out of tree builds are impossible with config.h in source dir."
2642 fi
2643
2644 for v in "$@"; do
2645     r=${v#*=}
2646     l=${v%"$r"}
2647     r=$(sh_quote "$r")
2648     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2649 done
2650
2651 find_things(){
2652     thing=$1
2653     pattern=$2
2654     file=$source_path/$3
2655     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2656 }
2657
2658 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2659 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2660 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2661 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2662 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2663 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2664 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2665 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2666 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2667 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2668 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2669
2670 ALL_COMPONENTS="
2671     $BSF_LIST
2672     $DECODER_LIST
2673     $DEMUXER_LIST
2674     $ENCODER_LIST
2675     $FILTER_LIST
2676     $HWACCEL_LIST
2677     $INDEV_LIST
2678     $MUXER_LIST
2679     $OUTDEV_LIST
2680     $PARSER_LIST
2681     $PROTOCOL_LIST
2682 "
2683
2684 for n in $COMPONENT_LIST; do
2685     v=$(toupper ${n%s})_LIST
2686     eval enable \$$v
2687     eval ${n}_if_any="\$$v"
2688 done
2689
2690 enable $ARCH_EXT_LIST
2691
2692 die_unknown(){
2693     echo "Unknown option \"$1\"."
2694     echo "See $0 --help for available options."
2695     exit 1
2696 }
2697
2698 print_3_columns() {
2699     cat | tr ' ' '\n' | sort | pr -r -3 -t
2700 }
2701
2702 show_list() {
2703     suffix=_$1
2704     shift
2705     echo $* | sed s/$suffix//g | print_3_columns
2706     exit 0
2707 }
2708
2709 rand_list(){
2710     IFS=', '
2711     set -- $*
2712     unset IFS
2713     for thing; do
2714         comp=${thing%:*}
2715         prob=${thing#$comp}
2716         prob=${prob#:}
2717         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2718         echo "prob ${prob:-0.5}"
2719         printf '%s\n' $comp
2720     done
2721 }
2722
2723 do_random(){
2724     action=$1
2725     shift
2726     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2727     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2728 }
2729
2730 for opt do
2731     optval="${opt#*=}"
2732     case "$opt" in
2733         --extra-ldflags=*)
2734             add_ldflags $optval
2735         ;;
2736         --extra-libs=*)
2737             add_extralibs $optval
2738         ;;
2739         --disable-devices)
2740             disable $INDEV_LIST $OUTDEV_LIST
2741         ;;
2742         --enable-debug=*)
2743             debuglevel="$optval"
2744         ;;
2745         --disable-programs)
2746             disable $PROGRAM_LIST
2747         ;;
2748         --disable-everything)
2749             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2750         ;;
2751         --disable-all)
2752             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2753             disable $LIBRARY_LIST $PROGRAM_LIST doc
2754         ;;
2755         --enable-random|--disable-random)
2756             action=${opt%%-random}
2757             do_random ${action#--} $COMPONENT_LIST
2758         ;;
2759         --enable-random=*|--disable-random=*)
2760             action=${opt%%-random=*}
2761             do_random ${action#--} $optval
2762         ;;
2763         --enable-*=*|--disable-*=*)
2764             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2765             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2766             eval list=\$$(toupper $thing)_LIST
2767             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2768             list=$(filter "$name" $list)
2769             [ "$list" = "" ] && warn "Option $opt did not match anything"
2770             $action $list
2771         ;;
2772         --enable-?*|--disable-?*)
2773             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2774             if is_in $option $COMPONENT_LIST; then
2775                 test $action = disable && action=unset
2776                 eval $action \$$(toupper ${option%s})_LIST
2777             elif is_in $option $CMDLINE_SELECT; then
2778                 $action $option
2779             else
2780                 die_unknown $opt
2781             fi
2782         ;;
2783         --list-*)
2784             NAME="${opt#--list-}"
2785             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2786             NAME=${NAME%s}
2787             eval show_list $NAME \$$(toupper $NAME)_LIST
2788         ;;
2789         --help|-h) show_help
2790         ;;
2791         --fatal-warnings) enable fatal_warnings
2792         ;;
2793         *)
2794             optname="${opt%%=*}"
2795             optname="${optname#--}"
2796             optname=$(echo "$optname" | sed 's/-/_/g')
2797             if is_in $optname $CMDLINE_SET; then
2798                 eval $optname='$optval'
2799             elif is_in $optname $CMDLINE_APPEND; then
2800                 append $optname "$optval"
2801             else
2802                 die_unknown $opt
2803             fi
2804         ;;
2805     esac
2806 done
2807
2808 disabled logging && logfile=/dev/null
2809
2810 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2811 set >> $logfile
2812
2813 test -n "$cross_prefix" && enable cross_compile
2814
2815 if enabled cross_compile; then
2816     test -n "$arch" && test -n "$target_os" ||
2817         die "Must specify target arch and OS when cross-compiling"
2818 fi
2819
2820 ar_default="${cross_prefix}${ar_default}"
2821 cc_default="${cross_prefix}${cc_default}"
2822 cxx_default="${cross_prefix}${cxx_default}"
2823 nm_default="${cross_prefix}${nm_default}"
2824 pkg_config_default="${cross_prefix}${pkg_config_default}"
2825 ranlib="${cross_prefix}${ranlib}"
2826 strip_default="${cross_prefix}${strip_default}"
2827 windres_default="${cross_prefix}${windres_default}"
2828
2829 sysinclude_default="${sysroot}/usr/include"
2830
2831 test -n "$valgrind" && toolchain="valgrind-memcheck"
2832
2833 case "$toolchain" in
2834     clang-asan)
2835         cc_default="clang"
2836         add_cflags  -fsanitize=address
2837         add_ldflags -fsanitize=address
2838     ;;
2839     clang-tsan)
2840         cc_default="clang"
2841         add_cflags  -fsanitize=thread -pie
2842         add_ldflags -fsanitize=thread -pie
2843     ;;
2844     clang-usan)
2845         cc_default="clang"
2846         add_cflags  -fsanitize=undefined
2847         add_ldflags -fsanitize=undefined
2848     ;;
2849     gcc-asan)
2850         cc_default="gcc"
2851         add_cflags  -fsanitize=address
2852         add_ldflags -fsanitize=address
2853     ;;
2854     gcc-tsan)
2855         cc_default="gcc"
2856         add_cflags  -fsanitize=thread -pie -fPIC
2857         add_ldflags -fsanitize=thread -pie -fPIC
2858     ;;
2859     gcc-usan)
2860         cc_default="gcc"
2861         add_cflags  -fsanitize=undefined
2862         add_ldflags -fsanitize=undefined
2863     ;;
2864     valgrind-massif)
2865         target_exec_default=${valgrind:-"valgrind"}
2866         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"
2867     ;;
2868     valgrind-memcheck)
2869         target_exec_default=${valgrind:-"valgrind"}
2870         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2871     ;;
2872     msvc)
2873         # Check whether the current MSVC version needs the C99 converter.
2874         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2875         # support enough of C99 to build ffmpeg. Default to the new
2876         # behaviour if the regexp was unable to match anything, since this
2877         # successfully parses the version number of existing supported
2878         # versions that require the converter (MSVC 2010 and 2012).
2879         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2880         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2881             cc_default="cl"
2882         else
2883             cc_default="c99wrap cl"
2884         fi
2885         ld_default="link"
2886         nm_default="dumpbin -symbols"
2887         ar_default="lib"
2888         target_os_default="win32"
2889         # Use a relative path for TMPDIR. This makes sure all the
2890         # ffconf temp files are written with a relative path, avoiding
2891         # issues with msys/win32 path conversion for MSVC parameters
2892         # such as -Fo<file> or -out:<file>.
2893         TMPDIR=.
2894     ;;
2895     icl)
2896         cc_default="icl"
2897         ld_default="xilink"
2898         nm_default="dumpbin -symbols"
2899         ar_default="xilib"
2900         target_os_default="win32"
2901         TMPDIR=.
2902     ;;
2903     gcov)
2904         add_cflags  -fprofile-arcs -ftest-coverage
2905         add_ldflags -fprofile-arcs -ftest-coverage
2906     ;;
2907     hardened)
2908         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2909         add_ldflags -Wl,-z,relro -Wl,-z,now
2910     ;;
2911     ?*)
2912         die "Unknown toolchain $toolchain"
2913     ;;
2914 esac
2915
2916 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2917 enabled cross_compile || host_cc_default=$cc
2918 set_default host_cc
2919
2920 if ! $pkg_config --version >/dev/null 2>&1; then
2921     warn "$pkg_config not found, library detection may fail."
2922     pkg_config=false
2923 fi
2924
2925 exesuf() {
2926     case $1 in
2927         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2928     esac
2929 }
2930
2931 EXESUF=$(exesuf $target_os)
2932 HOSTEXESUF=$(exesuf $host_os)
2933
2934 # set temporary file name
2935 : ${TMPDIR:=$TEMPDIR}
2936 : ${TMPDIR:=$TMP}
2937 : ${TMPDIR:=/tmp}
2938
2939 if [ -n "$tempprefix" ] ; then
2940     mktemp(){
2941         echo $tempprefix.${HOSTNAME}.${UID}
2942     }
2943 elif ! check_cmd mktemp -u XXXXXX; then
2944     # simple replacement for missing mktemp
2945     # NOT SAFE FOR GENERAL USE
2946     mktemp(){
2947         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2948     }
2949 fi
2950
2951 tmpfile(){
2952     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2953         (set -C; exec > $tmp) 2>/dev/null ||
2954         die "Unable to create temporary file in $TMPDIR."
2955     append TMPFILES $tmp
2956     eval $1=$tmp
2957 }
2958
2959 trap 'rm -f -- $TMPFILES' EXIT
2960
2961 tmpfile TMPASM .asm
2962 tmpfile TMPC   .c
2963 tmpfile TMPCPP .cpp
2964 tmpfile TMPE   $EXESUF
2965 tmpfile TMPH   .h
2966 tmpfile TMPO   .o
2967 tmpfile TMPS   .S
2968 tmpfile TMPSH  .sh
2969 tmpfile TMPV   .ver
2970
2971 unset -f mktemp
2972
2973 chmod +x $TMPE
2974
2975 # make sure we can execute files in $TMPDIR
2976 cat > $TMPSH 2>> $logfile <<EOF
2977 #! /bin/sh
2978 EOF
2979 chmod +x $TMPSH >> $logfile 2>&1
2980 if ! $TMPSH >> $logfile 2>&1; then
2981     cat <<EOF
2982 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2983 variable to another directory and make sure that it is not mounted noexec.
2984 EOF
2985     die "Sanity test failed."
2986 fi
2987
2988 ccc_flags(){
2989     for flag; do
2990         case $flag in
2991             -std=c99)           echo -c99                       ;;
2992             -mcpu=*)            echo -arch ${flag#*=}           ;;
2993             -mieee)             echo -ieee                      ;;
2994             -O*|-fast)          echo $flag                      ;;
2995             -fno-math-errno)    echo -assume nomath_errno       ;;
2996             -g)                 echo -g3                        ;;
2997             -Wall)              echo -msg_enable level2         ;;
2998             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2999             -Wl,*)              echo $flag                      ;;
3000             -f*|-W*)                                            ;;
3001             *)                  echo $flag                      ;;
3002         esac
3003    done
3004 }
3005
3006 cparser_flags(){
3007     for flag; do
3008         case $flag in
3009             -Wno-switch)             echo -Wno-switch-enum ;;
3010             -Wno-format-zero-length) ;;
3011             -Wdisabled-optimization) ;;
3012             -Wno-pointer-sign)       echo -Wno-other ;;
3013             *)                       echo $flag ;;
3014         esac
3015     done
3016 }
3017
3018 msvc_common_flags(){
3019     for flag; do
3020         case $flag in
3021             # In addition to specifying certain flags under the compiler
3022             # specific filters, they must be specified here as well or else the
3023             # generic catch all at the bottom will print the original flag.
3024             -Wall)                ;;
3025             -std=c99)             ;;
3026             # Common flags
3027             -fomit-frame-pointer) ;;
3028             -g)                   echo -Z7 ;;
3029             -fno-math-errno)      ;;
3030             -fno-common)          ;;
3031             -fno-signed-zeros)    ;;
3032             -fPIC)                ;;
3033             -mthumb)              ;;
3034             -march=*)             ;;
3035             -lz)                  echo zlib.lib ;;
3036             -lavifil32)           echo vfw32.lib ;;
3037             -lavicap32)           echo vfw32.lib user32.lib ;;
3038             -l*)                  echo ${flag#-l}.lib ;;
3039             *)                    echo $flag ;;
3040         esac
3041     done
3042 }
3043
3044 msvc_flags(){
3045     msvc_common_flags "$@"
3046     for flag; do
3047         case $flag in
3048             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3049                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3050                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3051                                        -wd4554 \
3052                                        -wd4273 ;;
3053         esac
3054     done
3055 }
3056
3057 icl_flags(){
3058     msvc_common_flags "$@"
3059     for flag; do
3060         case $flag in
3061             # Despite what Intel's documentation says -Wall, which is supported
3062             # on Windows, does enable remarks so disable them here.
3063             -Wall)                echo $flag -Qdiag-disable:remark ;;
3064             -std=c99)             echo -Qstd=c99 ;;
3065         esac
3066     done
3067 }
3068
3069 pgi_flags(){
3070     for flag; do
3071         case $flag in
3072             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3073             -fomit-frame-pointer) echo -Mnoframe ;;
3074             -g)                   echo -gopt ;;
3075             *)                    echo $flag ;;
3076         esac
3077     done
3078 }
3079
3080 suncc_flags(){
3081     for flag; do
3082         case $flag in
3083             -march=*|-mcpu=*)
3084                 case "${flag#*=}" in
3085                     native)                   echo -xtarget=native       ;;
3086                     v9|niagara)               echo -xarch=sparc          ;;
3087                     ultrasparc)               echo -xarch=sparcvis       ;;
3088                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3089                     i586|pentium)             echo -xchip=pentium        ;;
3090                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3091                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3092                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3093                     pentium4*)          echo -xtarget=pentium4           ;;
3094                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3095                     *-sse3)             echo -xarch=sse3                 ;;
3096                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3097                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3098                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3099                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3100                     bdver*)                    echo -xarch=avx           ;;
3101                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3102                     k8|opteron|athlon64|athlon-fx)
3103                                                echo -xarch=sse2a         ;;
3104                     athlon*)                   echo -xarch=pentium_proa  ;;
3105                 esac
3106                 ;;
3107             -std=c99)             echo -xc99              ;;
3108             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3109             -fPIC)                echo -KPIC -xcode=pic32 ;;
3110             -W*,*)                echo $flag              ;;
3111             -f*-*|-W*|-mimpure-text)                      ;;
3112             -shared)              echo -G                 ;;
3113             *)                    echo $flag              ;;
3114         esac
3115     done
3116 }
3117
3118 tms470_flags(){
3119     for flag; do
3120         case $flag in
3121             -march=*|-mcpu=*)
3122                 case "${flag#*=}" in
3123                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3124                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3125                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3126                     armv6*|arm11*)          echo -mv=6   ;;
3127                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3128                                             echo -mv=5e  ;;
3129                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3130                 esac
3131                 ;;
3132             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3133             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3134             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3135             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3136             -msoft-float)   echo --float_support=vfplib       ;;
3137             -O[0-3]|-mf=*)  echo $flag                        ;;
3138             -g)             echo -g -mn                       ;;
3139             -pds=*)         echo $flag                        ;;
3140             -D*|-I*)        echo $flag                        ;;
3141             --gcc|--abi=*)  echo $flag                        ;;
3142             -me)            echo $flag                        ;;
3143         esac
3144     done
3145 }
3146
3147 probe_cc(){
3148     pfx=$1
3149     _cc=$2
3150
3151     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3152     unset _ld_o _ldflags _ld_lib _ld_path
3153     unset _depflags _DEPCMD _DEPFLAGS
3154     _flags_filter=echo
3155
3156     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3157         true # no-op to avoid reading stdin in following checks
3158     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3159         _type=llvm_gcc
3160         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3161         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3162         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3163         _cflags_speed='-O3'
3164         _cflags_size='-Os'
3165     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3166         _type=gcc
3167         gcc_version=$($_cc --version | head -n1)
3168         gcc_basever=$($_cc -dumpversion)
3169         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3170         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3171         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3172         if ! $_cc -dumpversion | grep -q '^2\.'; then
3173             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3174         fi
3175         _cflags_speed='-O3'
3176         _cflags_size='-Os'
3177     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3178         _type=icc
3179         _ident=$($_cc --version | head -n1)
3180         _depflags='-MMD'
3181         _cflags_speed='-O3'
3182         _cflags_size='-Os'
3183         _cflags_noopt='-O1'
3184     elif $_cc -v 2>&1 | grep -q xlc; then
3185         _type=xlc
3186         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3187         _cflags_speed='-O5'
3188         _cflags_size='-O5 -qcompact'
3189     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3190         _type=ccc
3191         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3192         _DEPFLAGS='-M'
3193         _cflags_speed='-fast'
3194         _cflags_size='-O1'
3195         _flags_filter=ccc_flags
3196     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM C/C[+][+] Compiler|Component: ARM Compiler "; then
3197         test -d "$sysroot" || die "No valid sysroot specified."
3198         _type=armcc
3199         _ident=$($_cc --vsn | head -n1)
3200         armcc_conf="$PWD/armcc.conf"
3201         $_cc --arm_linux_configure                 \
3202              --arm_linux_config_file="$armcc_conf" \
3203              --configure_sysroot="$sysroot"        \
3204              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3205              die "Error creating armcc configuration file."
3206         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3207         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3208         as_default="${cross_prefix}gcc"
3209         _depflags='-MMD'
3210         _cflags_speed='-O3'
3211         _cflags_size='-Os'
3212     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3213         _type=tms470
3214         _ident=$($_cc -version | head -n1 | tr -s ' ')
3215         _flags='--gcc --abi=eabi -me'
3216         _cc_e='-ppl -fe=$@'
3217         _cc_o='-fe=$@'
3218         _depflags='-ppa -ppd=$(@:.o=.d)'
3219         _cflags_speed='-O3 -mf=5'
3220         _cflags_size='-O3 -mf=2'
3221         _flags_filter=tms470_flags
3222     elif $_cc -v 2>&1 | grep -q clang; then
3223         _type=clang
3224         _ident=$($_cc --version | head -n1)
3225         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3226         _cflags_speed='-O3'
3227         _cflags_size='-Os'
3228     elif $_cc -V 2>&1 | grep -q Sun; then
3229         _type=suncc
3230         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3231         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3232         _DEPFLAGS='-xM1 -xc99'
3233         _ldflags='-std=c99'
3234         _cflags_speed='-O5'
3235         _cflags_size='-O5 -xspace'
3236         _flags_filter=suncc_flags
3237     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3238         _type=pathscale
3239         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3240         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3241         _cflags_speed='-O2'
3242         _cflags_size='-Os'
3243         _flags_filter='filter_out -Wdisabled-optimization'
3244     elif $_cc -v 2>&1 | grep -q Open64; then
3245         _type=open64
3246         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3247         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3248         _cflags_speed='-O2'
3249         _cflags_size='-Os'
3250         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3251     elif $_cc -V 2>&1 | grep -q Portland; then
3252         _type=pgi
3253         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3254         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3255         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3256         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3257         _cflags_noopt="-O"
3258         _flags_filter=pgi_flags
3259     elif $_cc 2>&1 | grep -q Microsoft; then
3260         _type=msvc
3261         _ident=$($cc 2>&1 | head -n1)
3262         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3263         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3264         _cflags_speed="-O2"
3265         _cflags_size="-O1"
3266         if $_cc 2>&1 | grep -q Linker; then
3267             _ld_o='-out:$@'
3268         else
3269             _ld_o='-Fe$@'
3270         fi
3271         _cc_o='-Fo$@'
3272         _cc_e='-P -Fi$@'
3273         _flags_filter=msvc_flags
3274         _ld_lib='lib%.a'
3275         _ld_path='-libpath:'
3276         _flags='-nologo'
3277         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3278         if [ $pfx = hostcc ]; then
3279             append _cflags -Dsnprintf=_snprintf
3280         fi
3281         disable stripping
3282     elif $_cc 2>&1 | grep -q Intel; then
3283         _type=icl
3284         _ident=$($cc 2>&1 | head -n1)
3285         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3286         # Not only is O3 broken on 13.x+ but it is slower on all previous
3287         # versions (tested) as well.
3288         _cflags_speed="-O2"
3289         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3290         if $_cc 2>&1 | grep -q Linker; then
3291             _ld_o='-out:$@'
3292         else
3293             _ld_o='-Fe$@'
3294         fi
3295         _cc_o='-Fo$@'
3296         _cc_e='-P'
3297         _flags_filter=icl_flags
3298         _ld_lib='lib%.a'
3299         _ld_path='-libpath:'
3300         # -Qdiag-error to make icl error when seeing certain unknown arguments
3301         _flags='-nologo -Qdiag-error:4044,10157'
3302         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3303         # with MSVC which enables it by default.
3304         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3305         if [ $pfx = hostcc ]; then
3306             append _cflags -Dsnprintf=_snprintf
3307         fi
3308     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3309         _type=cparser
3310         _ident=$($_cc --version | head -n1)
3311         _depflags='-MMD'
3312         _cflags_speed='-O4'
3313         _cflags_size='-O2'
3314         _flags_filter=cparser_flags
3315     fi
3316
3317     eval ${pfx}_type=\$_type
3318     eval ${pfx}_ident=\$_ident
3319 }
3320
3321 set_ccvars(){
3322     eval ${1}_C=\${_cc_c-\${${1}_C}}
3323     eval ${1}_E=\${_cc_e-\${${1}_E}}
3324     eval ${1}_O=\${_cc_o-\${${1}_O}}
3325
3326     if [ -n "$_depflags" ]; then
3327         eval ${1}_DEPFLAGS=\$_depflags
3328     else
3329         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3330         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3331         eval DEP${1}FLAGS=\$_flags
3332     fi
3333 }
3334
3335 probe_cc cc "$cc"
3336 cflags_filter=$_flags_filter
3337 cflags_speed=$_cflags_speed
3338 cflags_size=$_cflags_size
3339 cflags_noopt=$_cflags_noopt
3340 add_cflags $_flags $_cflags
3341 cc_ldflags=$_ldflags
3342 set_ccvars CC
3343
3344 probe_cc hostcc "$host_cc"
3345 host_cflags_filter=$_flags_filter
3346 add_host_cflags  $_flags $_cflags
3347 set_ccvars HOSTCC
3348
3349 test -n "$cc_type" && enable $cc_type ||
3350     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3351
3352 : ${as_default:=$cc}
3353 : ${dep_cc_default:=$cc}
3354 : ${ld_default:=$cc}
3355 : ${host_ld_default:=$host_cc}
3356 set_default ar as dep_cc ld host_ld windres
3357
3358 probe_cc as "$as"
3359 asflags_filter=$_flags_filter
3360 add_asflags $_flags $_cflags
3361 set_ccvars AS
3362
3363 probe_cc ld "$ld"
3364 ldflags_filter=$_flags_filter
3365 add_ldflags $_flags $_ldflags
3366 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3367 LD_O=${_ld_o-$LD_O}
3368 LD_LIB=${_ld_lib-$LD_LIB}
3369 LD_PATH=${_ld_path-$LD_PATH}
3370
3371 probe_cc hostld "$host_ld"
3372 host_ldflags_filter=$_flags_filter
3373 add_host_ldflags $_flags $_ldflags
3374 HOSTLD_O=${_ld_o-$HOSTLD_O}
3375
3376 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3377     probe_cc depcc "$dep_cc"
3378     CCDEP=${_DEPCMD:-$DEPCMD}
3379     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3380     DEPCCFLAGS=$_flags
3381 fi
3382
3383 if $ar 2>&1 | grep -q Microsoft; then
3384     arflags="-nologo"
3385     ar_o='-out:$@'
3386 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3387     arflags="rq"
3388     ar_o='$@'
3389 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3390     arflags='-Xany -r -c'
3391     ar_o='$@'
3392 else
3393     arflags="rc"
3394     ar_o='$@'
3395 fi
3396
3397 add_cflags $extra_cflags
3398 add_cxxflags $extra_cxxflags
3399 add_asflags $extra_cflags
3400
3401 if test -n "$sysroot"; then
3402     case "$cc_type" in
3403         gcc|llvm_gcc|clang)
3404             add_cppflags --sysroot="$sysroot"
3405             add_ldflags --sysroot="$sysroot"
3406 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3407             add_cppflags -isysroot "$sysroot"
3408             add_ldflags -isysroot "$sysroot"
3409         ;;
3410         tms470)
3411             add_cppflags -I"$sysinclude"
3412             add_ldflags  --sysroot="$sysroot"
3413         ;;
3414     esac
3415 fi
3416
3417 if test "$cpu" = host; then
3418     enabled cross_compile &&
3419         die "--cpu=host makes no sense when cross-compiling."
3420
3421     case "$cc_type" in
3422         gcc|llvm_gcc)
3423             check_native(){
3424                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3425                 sed -n "/cc1.*$1=/{
3426                             s/.*$1=\\([^ ]*\\).*/\\1/
3427                             p
3428                             q
3429                         }" $TMPE
3430             }
3431             cpu=$(check_native -march || check_native -mcpu)
3432         ;;
3433     esac
3434
3435     test "${cpu:-host}" = host &&
3436         die "--cpu=host not supported with compiler $cc"
3437 fi
3438
3439 # Deal with common $arch aliases
3440 case "$arch" in
3441     aarch64|arm64)
3442         arch="aarch64"
3443     ;;
3444     arm*|iPad*|iPhone*)
3445         arch="arm"
3446     ;;
3447     mips*|IP*)
3448         arch="mips"
3449     ;;
3450     parisc*|hppa*)
3451         arch="parisc"
3452     ;;
3453     "Power Macintosh"|ppc*|powerpc*)
3454         arch="ppc"
3455     ;;
3456     s390|s390x)
3457         arch="s390"
3458     ;;
3459     sh4|sh)
3460         arch="sh4"
3461     ;;
3462     sun4u|sparc*)
3463         arch="sparc"
3464     ;;
3465     tilegx|tile-gx)
3466         arch="tilegx"
3467     ;;
3468     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3469         arch="x86"
3470     ;;
3471 esac
3472
3473 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3474 enable $arch
3475
3476 # Add processor-specific flags
3477 if enabled aarch64; then
3478
3479     case $cpu in
3480         armv*)
3481             cpuflags="-march=$cpu"
3482         ;;
3483         *)
3484             cpuflags="-mcpu=$cpu"
3485         ;;
3486     esac
3487
3488 elif enabled alpha; then
3489
3490     cpuflags="-mcpu=$cpu"
3491
3492 elif enabled arm; then
3493
3494     check_arm_arch() {
3495         check_cpp_condition stddef.h \
3496             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3497             $cpuflags
3498     }
3499
3500     probe_arm_arch() {
3501         if   check_arm_arch 4;        then echo armv4;
3502         elif check_arm_arch 4T;       then echo armv4t;
3503         elif check_arm_arch 5;        then echo armv5;
3504         elif check_arm_arch 5E;       then echo armv5e;
3505         elif check_arm_arch 5T;       then echo armv5t;
3506         elif check_arm_arch 5TE;      then echo armv5te;
3507         elif check_arm_arch 5TEJ;     then echo armv5te;
3508         elif check_arm_arch 6;        then echo armv6;
3509         elif check_arm_arch 6J;       then echo armv6j;
3510         elif check_arm_arch 6K;       then echo armv6k;
3511         elif check_arm_arch 6Z;       then echo armv6z;
3512         elif check_arm_arch 6ZK;      then echo armv6zk;
3513         elif check_arm_arch 6T2;      then echo armv6t2;
3514         elif check_arm_arch 7;        then echo armv7;
3515         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3516         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3517         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3518         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3519         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3520         fi
3521     }
3522
3523     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3524
3525     case $cpu in
3526         armv*)
3527             cpuflags="-march=$cpu"
3528             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3529         ;;
3530         *)
3531             cpuflags="-mcpu=$cpu"
3532             case $cpu in
3533                 cortex-a*)                               subarch=armv7a  ;;
3534                 cortex-r*)                               subarch=armv7r  ;;
3535                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3536                 arm11*)                                  subarch=armv6   ;;
3537                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3538                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3539                 *)                             subarch=$(probe_arm_arch) ;;
3540             esac
3541         ;;
3542     esac
3543
3544     case "$subarch" in
3545         armv5t*)    enable fast_clz                ;;
3546         armv[6-8]*) enable fast_clz fast_unaligned ;;
3547     esac
3548
3549 elif enabled avr32; then
3550
3551     case $cpu in
3552         ap7[02]0[0-2])
3553             subarch="avr32_ap"
3554             cpuflags="-mpart=$cpu"
3555         ;;
3556         ap)
3557             subarch="avr32_ap"
3558             cpuflags="-march=$cpu"
3559         ;;
3560         uc3[ab]*)
3561             subarch="avr32_uc"
3562             cpuflags="-mcpu=$cpu"
3563         ;;
3564         uc)
3565             subarch="avr32_uc"
3566             cpuflags="-march=$cpu"
3567         ;;
3568     esac
3569
3570 elif enabled bfin; then
3571
3572     cpuflags="-mcpu=$cpu"
3573
3574 elif enabled mips; then
3575
3576     cpuflags="-march=$cpu"
3577
3578     case $cpu in
3579         24kc)
3580             disable mipsfpu
3581             disable mipsdspr1
3582             disable mipsdspr2
3583         ;;
3584         24kf*)
3585             disable mipsdspr1
3586             disable mipsdspr2
3587         ;;
3588         24kec|34kc|1004kc)
3589             disable mipsfpu
3590             disable mipsdspr2
3591         ;;
3592         24kef*|34kf*|1004kf*)
3593             disable mipsdspr2
3594         ;;
3595         74kc)
3596             disable mipsfpu
3597         ;;
3598     esac
3599
3600 elif enabled ppc; then
3601
3602     disable ldbrx
3603
3604     case $(tolower $cpu) in
3605         601|ppc601|powerpc601)
3606             cpuflags="-mcpu=601"
3607             disable altivec
3608         ;;
3609         603*|ppc603*|powerpc603*)
3610             cpuflags="-mcpu=603"
3611             disable altivec
3612         ;;
3613         604*|ppc604*|powerpc604*)
3614             cpuflags="-mcpu=604"
3615             disable altivec
3616         ;;
3617         g3|75*|ppc75*|powerpc75*)
3618             cpuflags="-mcpu=750"
3619             disable altivec
3620         ;;
3621         g4|745*|ppc745*|powerpc745*)
3622             cpuflags="-mcpu=7450"
3623         ;;
3624         74*|ppc74*|powerpc74*)
3625             cpuflags="-mcpu=7400"
3626         ;;
3627         g5|970|ppc970|powerpc970)
3628             cpuflags="-mcpu=970"
3629         ;;
3630         power[3-7]*)
3631             cpuflags="-mcpu=$cpu"
3632         ;;
3633         cell)
3634             cpuflags="-mcpu=cell"
3635             enable ldbrx
3636         ;;
3637         e500mc)
3638             cpuflags="-mcpu=e500mc"
3639             disable altivec
3640         ;;
3641         e500v2)
3642             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3643             disable altivec
3644             disable dcbzl
3645         ;;
3646         e500)
3647             cpuflags="-mcpu=8540 -mhard-float"
3648             disable altivec
3649             disable dcbzl
3650         ;;
3651     esac
3652
3653 elif enabled sparc; then
3654
3655     case $cpu in
3656         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3657             cpuflags="-mcpu=$cpu"
3658         ;;
3659         ultrasparc*|niagara[234])
3660             cpuflags="-mcpu=$cpu"
3661         ;;
3662     esac
3663
3664 elif enabled x86; then
3665
3666     case $cpu in
3667         i[345]86|pentium)
3668             cpuflags="-march=$cpu"
3669             disable mmx
3670         ;;
3671         # targets that do NOT support nopl and conditional mov (cmov)
3672         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3673             cpuflags="-march=$cpu"
3674             disable i686
3675         ;;
3676         # targets that do support nopl and conditional mov (cmov)
3677         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3678             cpuflags="-march=$cpu"
3679             enable i686
3680             enable fast_cmov
3681         ;;
3682         # targets that do support conditional mov but on which it's slow
3683         pentium4|pentium4m|prescott|nocona)
3684             cpuflags="-march=$cpu"
3685             enable i686
3686             disable fast_cmov
3687         ;;
3688     esac
3689
3690 fi
3691
3692 if [ "$cpu" != generic ]; then
3693     add_cflags  $cpuflags
3694     add_asflags $cpuflags
3695 fi
3696
3697 # compiler sanity check
3698 check_exec <<EOF
3699 int main(void){ return 0; }
3700 EOF
3701 if test "$?" != 0; then
3702     echo "$cc is unable to create an executable file."
3703     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3704         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3705         echo "Only do this if you know what cross compiling means."
3706     fi
3707     die "C compiler test failed."
3708 fi
3709
3710 add_cppflags -D_ISOC99_SOURCE
3711 add_cxxflags -D__STDC_CONSTANT_MACROS
3712 check_cflags -std=c99
3713 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3714 #include <stdlib.h>
3715 EOF
3716 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3717 #include <stdlib.h>
3718 EOF
3719
3720 add_host_cppflags -D_ISOC99_SOURCE
3721 check_host_cflags -std=c99
3722 check_host_cflags -Wall
3723 check_host_cflags -O3
3724
3725 check_64bit(){
3726     arch32=$1
3727     arch64=$2
3728     expr=$3
3729     check_code cc "" "int test[2*($expr) - 1]" &&
3730         subarch=$arch64 || subarch=$arch32
3731 }
3732
3733 case "$arch" in
3734     aarch64|alpha|ia64)
3735         spic=$shared
3736     ;;
3737     mips)
3738         check_64bit mips mips64 '_MIPS_SIM > 1'
3739         spic=$shared
3740     ;;
3741     parisc)
3742         check_64bit parisc parisc64 'sizeof(void *) > 4'
3743         spic=$shared
3744     ;;
3745     ppc)
3746         check_64bit ppc ppc64 'sizeof(void *) > 4'
3747         spic=$shared
3748     ;;
3749     s390)
3750         check_64bit s390 s390x 'sizeof(void *) > 4'
3751         spic=$shared
3752     ;;
3753     sparc)
3754         check_64bit sparc sparc64 'sizeof(void *) > 4'
3755         spic=$shared
3756     ;;
3757     x86)
3758         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3759         if test "$subarch" = "x86_64"; then
3760             spic=$shared
3761         fi
3762     ;;
3763     ppc)
3764         check_cc <<EOF && subarch="ppc64"
3765         int test[(int)sizeof(char*) - 7];
3766 EOF
3767     ;;
3768 esac
3769
3770 enable $subarch
3771 enabled spic && enable_weak pic
3772
3773 # OS specific
3774 case $target_os in
3775     aix)
3776         SHFLAGS=-shared
3777         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3778         enabled shared && add_ldflags -Wl,-brtl
3779         ;;
3780     haiku)
3781         prefix_default="/boot/common"
3782         network_extralibs="-lnetwork"
3783         host_libs=
3784         ;;
3785     sunos)
3786         SHFLAGS='-shared -Wl,-h,$$(@F)'
3787         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3788         network_extralibs="-lsocket -lnsl"
3789         # When using suncc to build, the Solaris linker will mark
3790         # an executable with each instruction set encountered by
3791         # the Solaris assembler.  As our libraries contain their own
3792         # guards for processor-specific code, instead suppress
3793         # generation of the HWCAPS ELF section on Solaris x86 only.
3794         enabled_all suncc x86 &&
3795             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3796             add_ldflags -Wl,-M,mapfile
3797         nm_default='nm -P -g'
3798         ;;
3799     netbsd)
3800         disable symver
3801         oss_indev_extralibs="-lossaudio"
3802         oss_outdev_extralibs="-lossaudio"
3803         enabled gcc || check_ldflags -Wl,-zmuldefs
3804         ;;
3805     openbsd|bitrig)
3806         disable symver
3807         SHFLAGS='-shared'
3808         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3809         SLIB_INSTALL_LINKS=
3810         oss_indev_extralibs="-lossaudio"
3811         oss_outdev_extralibs="-lossaudio"
3812         ;;
3813     dragonfly)
3814         disable symver
3815         ;;
3816     freebsd)
3817         ;;
3818     bsd/os)
3819         add_extralibs -lpoll -lgnugetopt
3820         strip="strip -d"
3821         ;;
3822     darwin)
3823         gas="gas-preprocessor.pl $cc"
3824         enabled ppc && add_asflags -force_cpusubtype_ALL
3825         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3826         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3827         strip="${strip} -x"
3828         add_ldflags -Wl,-dynamic,-search_paths_first
3829         SLIBSUF=".dylib"
3830         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3831         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3832         objformat="macho"
3833         enabled x86_64 && objformat="macho64"
3834         enabled_any pic shared ||
3835             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3836         ;;
3837     mingw32*)
3838         if test $target_os = "mingw32ce"; then
3839             disable network
3840         else
3841             target_os=mingw32
3842         fi
3843         LIBTARGET=i386
3844         if enabled x86_64; then
3845             LIBTARGET="i386:x86-64"
3846         elif enabled arm; then
3847             LIBTARGET=arm-wince
3848         fi
3849         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3850         check_ldflags -Wl,--nxcompat
3851         check_ldflags -Wl,--dynamicbase
3852         shlibdir_default="$bindir_default"
3853         SLIBPREF=""
3854         SLIBSUF=".dll"
3855         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3856         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3857         dlltool="${cross_prefix}dlltool"
3858         if check_cmd lib.exe -list; then
3859             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3860             if enabled x86_64; then
3861                 LIBTARGET=x64
3862             fi
3863         elif check_cmd $dlltool --version; then
3864             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3865         fi
3866         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3867         SLIB_INSTALL_LINKS=
3868         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3869         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3870         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3871         objformat="win32"
3872         ranlib=:
3873         enable dos_paths
3874         ;;
3875     win32|win64)
3876         disable symver
3877         if enabled shared; then
3878             # Link to the import library instead of the normal static library
3879             # for shared libs.
3880             LD_LIB='%.lib'
3881             # Cannot build both shared and static libs with MSVC or icl.
3882             disable static
3883         fi
3884         shlibdir_default="$bindir_default"
3885         SLIBPREF=""
3886         SLIBSUF=".dll"
3887         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3888         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3889         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3890         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3891         SLIB_INSTALL_LINKS=
3892         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3893         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3894         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3895         objformat="win32"
3896         ranlib=:
3897         enable dos_paths
3898         ;;
3899     cygwin*)
3900         target_os=cygwin
3901         shlibdir_default="$bindir_default"
3902         SLIBPREF="cyg"
3903         SLIBSUF=".dll"
3904         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3905         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3906         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3907         SLIB_INSTALL_LINKS=
3908         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3909         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3910         objformat="win32"
3911         enable dos_paths
3912         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3913         ;;
3914     *-dos|freedos|opendos)
3915         network_extralibs="-lsocket"
3916         objformat="coff"
3917         enable dos_paths
3918         add_cppflags -U__STRICT_ANSI__
3919         ;;
3920     linux)
3921         enable dv1394
3922         ;;
3923     irix*)
3924         target_os=irix
3925         ranlib="echo ignoring ranlib"
3926         ;;
3927     os/2*)
3928         strip="lxlite -CS"
3929         ln_s="cp -f"
3930         objformat="aout"
3931         add_cppflags -D_GNU_SOURCE
3932         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3933         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3934         LIBSUF="_s.a"
3935         SLIBPREF=""
3936         SLIBSUF=".dll"
3937         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3938         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3939         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3940             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3941             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3942             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3943             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3944             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3945         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3946             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3947         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3948         enable dos_paths
3949         enable_weak os2threads
3950         ;;
3951     gnu/kfreebsd)
3952         add_cppflags -D_BSD_SOURCE
3953         ;;
3954     gnu)
3955         ;;
3956     qnx)
3957         add_cppflags -D_QNX_SOURCE
3958         network_extralibs="-lsocket"
3959         ;;
3960     symbian)
3961         SLIBSUF=".dll"
3962         enable dos_paths
3963         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3964         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3965         add_ldflags -Wl,--target1-abs,--no-undefined \
3966                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3967                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3968         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3969                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3970                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3971         ;;
3972     osf1)
3973         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3974         ;;
3975     minix)
3976         ;;
3977     plan9)
3978         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3979                      -D_REENTRANT_SOURCE        \
3980                      -D_RESEARCH_SOURCE         \
3981                      -DFD_SETSIZE=96            \
3982                      -DHAVE_SOCK_OPTS
3983         add_compat strtod.o strtod=avpriv_strtod
3984         network_extralibs='-lbsd'
3985         exeobjs=compat/plan9/main.o
3986         disable ffserver
3987         cp_f='cp'
3988         ;;
3989     none)
3990         ;;
3991     *)
3992         die "Unknown OS '$target_os'."
3993         ;;
3994 esac
3995
3996 # determine libc flavour
3997
3998 probe_libc(){
3999     pfx=$1
4000     pfx_no_=${pfx%_}
4001     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4002     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4003         eval ${pfx}libc_type=uclibc
4004         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4005     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4006         eval ${pfx}libc_type=glibc
4007         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4008     # MinGW headers can be installed on Cygwin, so check for newlib first.
4009     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4010         eval ${pfx}libc_type=newlib
4011         add_${pfx}cppflags -U__STRICT_ANSI__
4012     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4013     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4014         eval ${pfx}libc_type=mingw64
4015         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4016             add_compat msvcrt/snprintf.o
4017             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4018         fi
4019         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4020         eval test \$${pfx_no_}cc_type = "gcc" &&
4021             add_${pfx}cppflags -D__printf__=__gnu_printf__
4022     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4023          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4024         eval ${pfx}libc_type=mingw32
4025         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4026             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4027             die "ERROR: MinGW32 runtime version must be >= 3.15."
4028         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4029         eval test \$${pfx_no_}cc_type = "gcc" &&
4030             add_${pfx}cppflags -D__printf__=__gnu_printf__
4031     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4032         eval ${pfx}libc_type=msvcrt
4033         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4034         # 0x601 by default unless something else is set by the user.
4035         # This can easily lead to us detecting functions only present
4036         # in such new versions and producing binaries requiring windows 7.0.
4037         # Therefore explicitly set the default to XP unless the user has
4038         # set something else on the command line.
4039         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4040             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4041     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4042         eval ${pfx}libc_type=klibc
4043     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4044         eval ${pfx}libc_type=bionic
4045     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4046         eval ${pfx}libc_type=solaris
4047         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4048     fi
4049 }
4050
4051 probe_libc
4052 test -n "$libc_type" && enable libc_$libc_type
4053 probe_libc host_
4054 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4055
4056 case $libc_type in
4057     bionic)
4058         add_compat strtod.o strtod=avpriv_strtod
4059         ;;
4060     msvcrt)
4061         add_compat strtod.o strtod=avpriv_strtod
4062         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4063                                      _snprintf=avpriv_snprintf  \
4064                                      vsnprintf=avpriv_vsnprintf
4065         ;;
4066 esac
4067
4068 # hacks for compiler/libc/os combinations
4069
4070 if enabled_all tms470 libc_glibc; then
4071     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4072     add_cppflags -D__USER_LABEL_PREFIX__=
4073     add_cppflags -D__builtin_memset=memset
4074     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4075     add_cflags   -pds=48    # incompatible redefinition of macro
4076 fi
4077
4078 if enabled_all ccc libc_glibc; then
4079     add_ldflags -Wl,-z,now  # calls to libots crash without this
4080 fi
4081
4082 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4083     add_cppflags '-I\$(SRC_PATH)/compat/float'
4084
4085 esc(){
4086     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4087 }
4088
4089 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4090
4091 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4092
4093 set_default $PATHS_LIST
4094 set_default nm
4095
4096 # we need to build at least one lib type
4097 if ! enabled_any static shared; then
4098     cat <<EOF
4099 At least one library type must be built.
4100 Specify --enable-static to build the static libraries or --enable-shared to
4101 build the shared libraries as well. To only build the shared libraries specify
4102 --disable-static in addition to --enable-shared.
4103 EOF
4104     exit 1;
4105 fi
4106
4107 # backward compatibility layer for incompatible_libav/fork_abi
4108 enabled incompatible_fork_abi  && enable incompatible_libav_abi
4109 enabled incompatible_libav_abi && enable incompatible_fork_abi
4110
4111 die_license_disabled() {
4112     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4113 }
4114
4115 die_license_disabled_gpl() {
4116     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4117 }
4118
4119 die_license_disabled gpl frei0r
4120 die_license_disabled gpl libcdio
4121 die_license_disabled gpl libutvideo
4122 die_license_disabled gpl libvidstab
4123 die_license_disabled gpl libx264
4124 die_license_disabled gpl libx265
4125 die_license_disabled gpl libxavs
4126 die_license_disabled gpl libxvid
4127 die_license_disabled gpl libzvbi
4128 die_license_disabled gpl x11grab
4129
4130 die_license_disabled nonfree libaacplus
4131 die_license_disabled nonfree libfaac
4132 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4133 enabled gpl && die_license_disabled_gpl nonfree openssl
4134
4135 die_license_disabled version3 libopencore_amrnb
4136 die_license_disabled version3 libopencore_amrwb
4137 die_license_disabled version3 libvo_aacenc
4138 die_license_disabled version3 libvo_amrwbenc
4139
4140 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4141
4142 disabled optimizations || check_cflags -fomit-frame-pointer
4143
4144 enable_weak_pic() {
4145     disabled pic && return
4146     enable pic
4147     add_cppflags -DPIC
4148     case "$target_os" in
4149     mingw*|cygwin*)
4150         ;;
4151     *)
4152         add_cflags -fPIC
4153         ;;
4154     esac
4155     add_asflags  -fPIC
4156 }
4157
4158 enabled pic && enable_weak_pic
4159
4160 check_cc <<EOF || die "Symbol mangling check failed."
4161 int ff_extern;
4162 EOF
4163 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4164 extern_prefix=${sym%%ff_extern*}
4165
4166 check_cc <<EOF && enable_weak inline_asm
4167 void foo(void) { __asm__ volatile ("" ::); }
4168 EOF
4169
4170 _restrict=
4171 for restrict_keyword in restrict __restrict__ __restrict; do
4172     check_cc <<EOF && _restrict=$restrict_keyword && break
4173 void foo(char * $restrict_keyword p);
4174 EOF
4175 done
4176
4177 check_cc <<EOF && enable pragma_deprecated
4178 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4179 EOF
4180
4181 check_cc <<EOF && enable attribute_packed
4182 struct { int x; } __attribute__((packed)) x;
4183 EOF
4184
4185 check_cc <<EOF && enable attribute_may_alias
4186 union { int x; } __attribute__((may_alias)) x;
4187 EOF
4188
4189 check_cc <<EOF || die "endian test failed"
4190 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4191 EOF
4192 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4193
4194 check_inline_asm inline_asm_labels '"1:\n"'
4195
4196 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4197
4198 if enabled aarch64; then
4199     # internal assembler in clang 3.3 does not support this instruction
4200     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4201     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4202
4203     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4204
4205 elif enabled alpha; then
4206
4207     check_cflags -mieee
4208
4209 elif enabled arm; then
4210
4211     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4212 float func(float a, float b){ return a+b; }
4213 EOF
4214
4215     enabled thumb && check_cflags -mthumb || check_cflags -marm
4216     nogas=die
4217
4218     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4219         enable vfp_args
4220     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4221         case "${cross_prefix:-$cc}" in
4222             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4223             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4224 __asm__ (".eabi_attribute 28, 1");
4225 int main(void) { return 0; }
4226 EOF
4227         esac
4228         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4229     fi
4230
4231     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4232     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4233     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4234     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4235     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4236     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4237
4238     [ $target_os = linux ] ||
4239         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4240             $ARCH_EXT_LIST_ARM
4241
4242     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4243
4244     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4245
4246 elif enabled mips; then
4247
4248     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4249     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4250      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4251     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4252      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4253     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4254      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4255     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4256      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4257
4258 elif enabled parisc; then
4259
4260     if enabled gcc; then
4261         case $($cc -dumpversion) in
4262             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4263         esac
4264     fi
4265
4266 elif enabled ppc; then
4267
4268     enable local_aligned_8 local_aligned_16
4269
4270     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4271     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4272     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4273     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4274
4275     # AltiVec flags: The FSF version of GCC differs from the Apple version
4276     if enabled altivec; then
4277         if ! enabled_any pic ppc64; then
4278             nogas=warn
4279         fi
4280         check_cflags -maltivec -mabi=altivec &&
4281         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4282         check_cflags -faltivec
4283
4284         # check if our compiler supports Motorola AltiVec C API
4285         check_cc <<EOF || disable altivec
4286 $inc_altivec_h
4287 int main(void) {
4288     vector signed int v1 = (vector signed int) { 0 };
4289     vector signed int v2 = (vector signed int) { 1 };
4290     v1 = vec_add(v1, v2);
4291     return 0;
4292 }
4293 EOF
4294
4295         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4296     fi
4297
4298 elif enabled x86; then
4299
4300     check_builtin rdtsc    intrin.h   "__rdtsc()"
4301     check_builtin mm_empty mmintrin.h "_mm_empty()"
4302
4303     enable local_aligned_8 local_aligned_16
4304
4305     # check whether EBP is available on x86
4306     # As 'i' is stored on the stack, this program will crash
4307     # if the base pointer is used to access it because the
4308     # base pointer is cleared in the inline assembly code.
4309     check_exec_crash <<EOF && enable ebp_available
4310 volatile int i=0;
4311 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4312 return i;
4313 EOF
4314
4315     # check whether EBX is available on x86
4316     check_inline_asm ebx_available '""::"b"(0)' &&
4317         check_inline_asm ebx_available '"":::"%ebx"'
4318
4319     # check whether xmm clobbers are supported
4320     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4321
4322     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4323         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4324
4325     # check whether binutils is new enough to compile SSSE3/MMXEXT
4326     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4327     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4328
4329     if ! disabled_any asm mmx yasm; then
4330         if check_cmd $yasmexe --version; then
4331             enabled x86_64 && yasm_extra="-m amd64"
4332             yasm_debug="-g dwarf2"
4333         elif check_cmd nasm -v; then
4334             yasmexe=nasm
4335             yasm_debug="-g -F dwarf"
4336             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4337         fi
4338
4339         YASMFLAGS="-f $objformat $yasm_extra"
4340         enabled pic               && append YASMFLAGS "-DPIC"
4341         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4342         case "$objformat" in
4343             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4344         esac
4345
4346         check_yasm "movbe ecx, [5]" && enable yasm ||
4347             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4348         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4349         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4350         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4351         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4352         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4353         check_yasm "CPU amdnop" || disable cpunop
4354     fi
4355
4356     case "$cpu" in
4357         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4358             disable fast_clz
4359         ;;
4360     esac
4361
4362 fi
4363
4364 if enabled asm; then
4365     as=${gas:=$as}
4366     check_as <<EOF && enable gnu_as || \
4367         $nogas "GNU assembler not found, install gas-preprocessor"
4368 .macro m n
4369 \n: .int 0
4370 .endm
4371 m x
4372 EOF
4373 fi
4374
4375 check_ldflags -Wl,--as-needed
4376
4377 if check_func dlopen; then
4378     ldl=
4379 elif check_func dlopen -ldl; then
4380     ldl=-ldl
4381 fi
4382
4383 if ! disabled network; then
4384     check_func getaddrinfo $network_extralibs
4385     check_func getservbyport $network_extralibs
4386     check_func inet_aton $network_extralibs
4387
4388     check_type netdb.h "struct addrinfo"
4389     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4390     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4391     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4392     check_type poll.h "struct pollfd"
4393     check_type netinet/sctp.h "struct sctp_event_subscribe"
4394     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4395     check_type netinet/in.h "struct sockaddr_in6"
4396     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4397     check_type "sys/types.h sys/socket.h" socklen_t
4398
4399     # Prefer arpa/inet.h over winsock2
4400     if check_header arpa/inet.h ; then
4401         check_func closesocket
4402     elif check_header winsock2.h ; then
4403         check_func_headers winsock2.h closesocket -lws2 &&
4404             network_extralibs="-lws2" ||
4405         { check_func_headers winsock2.h closesocket -lws2_32 &&
4406             network_extralibs="-lws2_32"; } || disable winsock2_h network
4407         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4408
4409         check_type ws2tcpip.h socklen_t
4410         check_type ws2tcpip.h "struct addrinfo"
4411         check_type ws2tcpip.h "struct group_source_req"
4412         check_type ws2tcpip.h "struct ip_mreq_source"
4413         check_type ws2tcpip.h "struct ipv6_mreq"
4414         check_type winsock2.h "struct pollfd"
4415         check_struct winsock2.h "struct sockaddr" sa_len
4416         check_type ws2tcpip.h "struct sockaddr_in6"
4417         check_type ws2tcpip.h "struct sockaddr_storage"
4418     else
4419         disable network
4420     fi
4421 fi
4422
4423 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4424 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4425 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4426 check_builtin sarestart signal.h "SA_RESTART"
4427 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4428
4429 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4430 check_func  ${malloc_prefix}memalign            && enable memalign
4431 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4432
4433 check_func  access
4434 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4435 check_func  fcntl
4436 check_func  fork
4437 check_func  gethrtime
4438 check_func  getopt
4439 check_func  getrusage
4440 check_func  gettimeofday
4441 check_func  isatty
4442 check_func  localtime_r
4443 check_func  mach_absolute_time
4444 check_func  mkstemp
4445 check_func  mmap
4446 check_func  mprotect
4447 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4448 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4449 check_func  sched_getaffinity
4450 check_func  setrlimit
4451 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4452 check_func  strerror_r
4453 check_func  sysconf
4454 check_func  sysctl
4455 check_func  usleep
4456
4457 check_func_headers conio.h kbhit
4458 check_func_headers io.h setmode
4459 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4460 check_func_headers stdlib.h getenv
4461
4462 check_func_headers windows.h GetProcessAffinityMask
4463 check_func_headers windows.h GetProcessTimes
4464 check_func_headers windows.h GetSystemTimeAsFileTime
4465 check_func_headers windows.h MapViewOfFile
4466 check_func_headers windows.h PeekNamedPipe
4467 check_func_headers windows.h SetConsoleTextAttribute
4468 check_func_headers windows.h Sleep
4469 check_func_headers windows.h VirtualAlloc
4470 check_func_headers glob.h glob
4471 enabled xlib &&
4472     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4473
4474 check_header cl/cl.h
4475 check_header direct.h
4476 check_header dlfcn.h
4477 check_header dxva.h
4478 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4479 check_header io.h
4480 check_header libcrystalhd/libcrystalhd_if.h
4481 check_header mach/mach_time.h
4482 check_header malloc.h
4483 check_header poll.h
4484 check_header sys/mman.h
4485 check_header sys/param.h
4486 check_header sys/resource.h
4487 check_header sys/select.h
4488 check_header sys/time.h
4489 check_header sys/un.h
4490 check_header termios.h
4491 check_header unistd.h
4492 check_header vdpau/vdpau.h
4493 check_header vdpau/vdpau_x11.h
4494 check_header VideoDecodeAcceleration/VDADecoder.h
4495 check_header windows.h
4496 check_header X11/extensions/XvMClib.h
4497 check_header asm/types.h
4498
4499 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4500 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4501 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4502
4503 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4504
4505 if ! disabled w32threads && ! enabled pthreads; then
4506     check_func_headers "windows.h process.h" _beginthreadex &&
4507         enable w32threads || disable w32threads
4508 fi
4509
4510 # check for some common methods of building with pthread support
4511 # do this before the optional library checks as some of them require pthreads
4512 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4513     enable pthreads
4514     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4515         add_cflags -pthread
4516         add_extralibs -pthread
4517     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4518         add_cflags -pthreads
4519         add_extralibs -pthreads
4520     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4521         add_extralibs -lpthreadGC2
4522     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4523         :
4524     elif ! check_func pthread_join && ! check_func pthread_create; then
4525         disable pthreads
4526     fi
4527     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4528 fi
4529
4530
4531 if enabled pthreads; then
4532   check_func pthread_cancel
4533 fi
4534
4535 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4536 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4537
4538 check_lib math.h sin -lm && LIBM="-lm"
4539 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4540
4541 atan2f_args=2
4542 ldexpf_args=2
4543 powf_args=2
4544
4545 for func in $MATH_FUNCS; do
4546     eval check_mathfunc $func \${${func}_args:-1}
4547 done
4548
4549 # these are off by default, so fail if requested and not available
4550 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4551                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4552                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4553 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4554 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4555 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4556 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4557 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4558 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4559 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4560 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4561 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4562 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4563                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4564                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4565 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4566 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4567 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4568 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"
4569 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4570 enabled libfreetype       && require_libfreetype
4571 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4572 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4573                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4574                                done || die "ERROR: libgsm not found"; }
4575 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4576 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4577 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4578 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4579 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4580 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4581 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4582 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4583                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4584                                die "ERROR: libopenjpeg not found"; }
4585 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4586 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4587 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4588 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4589 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4590 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4591 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4592 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4593 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4594 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4595     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4596     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4597 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4598 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4599                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4600                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4601 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4602 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4603 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4604 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4605 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4606 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4607 enabled libvpx            && {
4608     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4609                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4610     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 ||
4611                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4612     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4613     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; } }
4614 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4615 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4616 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4617                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4618                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4619 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4620                              { check_cpp_condition x265.h "X265_BUILD >= 9" ||
4621                                die "ERROR: libx265 version must be >= 9."; }
4622 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4623 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4624 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4625 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4626 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4627                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4628                                die "ERROR: openal not found"; } &&
4629                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4630                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4631 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4632                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4633                                die "ERROR: opencl not found"; } &&
4634                              { ! enabled_any w32threads os2threads ||
4635                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4636                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4637                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4638                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4639 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4640                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4641                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4642                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4643                                die "ERROR: opengl not found."
4644                              }
4645 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4646                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4647                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4648                                die "ERROR: openssl not found"; }
4649 enabled qtkit_indev      && { check_header QTKit/QTKit.h || disable qtkit_indev; }
4650
4651 if enabled gnutls; then
4652     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4653     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4654 fi
4655
4656 # libdc1394 check
4657 if enabled libdc1394; then
4658     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4659         enable libdc1394_2; } ||
4660     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4661         enable libdc1394_1; } ||
4662     die "ERROR: No version of libdc1394 found "
4663 fi
4664
4665 SDL_CONFIG="${cross_prefix}sdl-config"
4666 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4667     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4668     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4669     enable sdl
4670 else
4671   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4672     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4673     sdl_libs=$("${SDL_CONFIG}" --libs)
4674     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4675     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4676     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4677     enable sdl
4678   fi
4679 fi
4680 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4681
4682 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4683 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4684 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4685 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4686 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4687
4688 check_header linux/fb.h
4689 check_header linux/videodev.h
4690 check_header linux/videodev2.h
4691 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4692
4693 check_header sys/videoio.h
4694
4695 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4696 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4697 # w32api 3.12 had it defined wrong
4698 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4699
4700 check_type "dshow.h" IBaseFilter
4701
4702 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4703 { check_header dev/bktr/ioctl_meteor.h &&
4704   check_header dev/bktr/ioctl_bt848.h; } ||
4705 { check_header machine/ioctl_meteor.h &&
4706   check_header machine/ioctl_bt848.h; } ||
4707 { check_header dev/video/meteor/ioctl_meteor.h &&
4708   check_header dev/video/bktr/ioctl_bt848.h; } ||
4709 check_header dev/ic/bt8xx.h
4710
4711 check_header sndio.h
4712 if check_struct sys/soundcard.h audio_buf_info bytes; then
4713     enable_safe sys/soundcard.h
4714 else
4715     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4716     #include <sys/soundcard.h>
4717     audio_buf_info abc;
4718 EOF
4719 fi
4720 check_header soundcard.h
4721
4722 enabled_any alsa_indev alsa_outdev &&
4723     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4724
4725 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4726     check_func jack_port_get_latency_range -ljack
4727
4728 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4729
4730 if enabled libcdio; then
4731     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4732     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4733     die "ERROR: libcdio-paranoia not found"
4734 fi
4735
4736 enabled xlib &&
4737     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
4738
4739 enabled x11grab                                           &&
4740 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4741 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4742 { enabled xlib || die "ERROR: Xlib not found"; }
4743
4744 enabled vaapi &&
4745     check_lib va/va.h vaInitialize -lva ||
4746     disable vaapi
4747
4748 enabled vdpau &&
4749     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4750     disable vdpau
4751
4752 enabled vdpau && enabled xlib &&
4753     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4754     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
4755     enable vdpau_x11
4756
4757 # Funny iconv installations are not unusual, so check it after all flags have been set
4758 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4759
4760 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4761
4762 # add some useful compiler flags if supported
4763 check_cflags -Wdeclaration-after-statement
4764 check_cflags -Wall
4765 check_cflags -Wdisabled-optimization
4766 check_cflags -Wpointer-arith
4767 check_cflags -Wredundant-decls
4768 check_cflags -Wwrite-strings
4769 check_cflags -Wtype-limits
4770 check_cflags -Wundef
4771 check_cflags -Wmissing-prototypes
4772 check_cflags -Wno-pointer-to-int-cast
4773 check_cflags -Wstrict-prototypes
4774 enabled extra_warnings && check_cflags -Winline
4775
4776 check_disable_warning(){
4777     warning_flag=-W${1#-Wno-}
4778     test_cflags $warning_flag && add_cflags $1
4779 }
4780
4781 check_disable_warning -Wno-parentheses
4782 check_disable_warning -Wno-switch
4783 check_disable_warning -Wno-format-zero-length
4784 check_disable_warning -Wno-pointer-sign
4785
4786 # add some linker flags
4787 check_ldflags -Wl,--warn-common
4788 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4789 enabled rpath && add_ldflags -Wl,-rpath=$libdir
4790 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4791
4792 # add some strip flags
4793 # -wN '..@*' is more selective than -x, but not available everywhere.
4794 check_stripflags -wN \'..@*\' || check_stripflags -x
4795
4796 enabled neon_clobber_test &&
4797     check_ldflags -Wl,--wrap,avcodec_open2              \
4798                   -Wl,--wrap,avcodec_decode_audio4      \
4799                   -Wl,--wrap,avcodec_decode_video2      \
4800                   -Wl,--wrap,avcodec_decode_subtitle2   \
4801                   -Wl,--wrap,avcodec_encode_audio2      \
4802                   -Wl,--wrap,avcodec_encode_video2      \
4803                   -Wl,--wrap,avcodec_encode_subtitle    \
4804                   -Wl,--wrap,swr_convert                \
4805                   -Wl,--wrap,avresample_convert ||
4806     disable neon_clobber_test
4807
4808 enabled xmm_clobber_test &&
4809     check_ldflags -Wl,--wrap,avcodec_open2              \
4810                   -Wl,--wrap,avcodec_decode_audio4      \
4811                   -Wl,--wrap,avcodec_decode_video2&nb