build: Require yasm 0.8.0 or higher
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav 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 LIBAV, 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 Libav."
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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105
106 Program options:
107   --disable-programs       do not build command line programs
108   --disable-avconv         disable avconv build
109   --disable-avplay         disable avplay build
110   --disable-avprobe        disable avprobe build
111   --disable-avserver       disable avserver build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-avdevice       disable libavdevice build
116   --disable-avcodec        disable libavcodec build
117   --disable-avformat       disable libavformat build
118   --disable-avutil         disable libavutil build
119   --disable-swscale        disable libswscale build
120   --disable-avfilter       disable video filter support [no]
121   --disable-avresample     disable libavresample build [no]
122   --disable-pthreads       disable pthreads [auto]
123   --disable-w32threads     disable Win32 threads [auto]
124   --disable-network        disable network support [no]
125   --disable-dct            disable DCT code
126   --disable-error-resilience disable error resilience code
127   --disable-lsp            disable LSP code
128   --disable-lzo            disable LZO decoder code
129   --disable-mdct           disable MDCT code
130   --disable-rdft           disable RDFT code
131   --disable-fft            disable FFT code
132
133 Hardware accelerators:
134   --enable-dxva2           enable DXVA2 code
135   --enable-vaapi           enable VAAPI code
136   --enable-vda             enable VDA code
137   --enable-vdpau           enable VDPAU code
138
139 Individual component options:
140   --disable-everything     disable all components listed below
141   --disable-encoder=NAME   disable encoder NAME
142   --enable-encoder=NAME    enable encoder NAME
143   --disable-encoders       disable all encoders
144   --disable-decoder=NAME   disable decoder NAME
145   --enable-decoder=NAME    enable decoder NAME
146   --disable-decoders       disable all decoders
147   --disable-hwaccel=NAME   disable hwaccel NAME
148   --enable-hwaccel=NAME    enable hwaccel NAME
149   --disable-hwaccels       disable all hwaccels
150   --disable-muxer=NAME     disable muxer NAME
151   --enable-muxer=NAME      enable muxer NAME
152   --disable-muxers         disable all muxers
153   --disable-demuxer=NAME   disable demuxer NAME
154   --enable-demuxer=NAME    enable demuxer NAME
155   --disable-demuxers       disable all demuxers
156   --enable-parser=NAME     enable parser NAME
157   --disable-parser=NAME    disable parser NAME
158   --disable-parsers        disable all parsers
159   --enable-bsf=NAME        enable bitstream filter NAME
160   --disable-bsf=NAME       disable bitstream filter NAME
161   --disable-bsfs           disable all bitstream filters
162   --enable-protocol=NAME   enable protocol NAME
163   --disable-protocol=NAME  disable protocol NAME
164   --disable-protocols      disable all protocols
165   --enable-indev=NAME      enable input device NAME
166   --disable-indev=NAME     disable input device NAME
167   --disable-indevs         disable input devices
168   --enable-outdev=NAME     enable output device NAME
169   --disable-outdev=NAME    disable output device NAME
170   --disable-outdevs        disable output devices
171   --disable-devices        disable all devices
172   --enable-filter=NAME     enable filter NAME
173   --disable-filter=NAME    disable filter NAME
174   --disable-filters        disable all filters
175
176 External library support:
177   --enable-avisynth        enable reading of AviSynth script files [no]
178   --enable-bzlib           enable bzlib [autodetect]
179   --enable-frei0r          enable frei0r video filtering
180   --enable-gnutls          enable gnutls [no]
181   --enable-libcdio         enable audio CD grabbing with libcdio
182   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
183                            and libraw1394 [no]
184   --enable-libfaac         enable AAC encoding via libfaac [no]
185   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
186   --enable-libfreetype     enable libfreetype [no]
187   --enable-libgsm          enable GSM de/encoding via libgsm [no]
188   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
189   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
190   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
191   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
192   --enable-libopencv       enable video filtering via libopencv [no]
193   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
194   --enable-libopus         enable Opus decoding via libopus [no]
195   --enable-libpulse        enable Pulseaudio input via libpulse [no]
196   --enable-librtmp         enable RTMP[E] support via librtmp [no]
197   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
198   --enable-libspeex        enable Speex de/encoding via libspeex [no]
199   --enable-libtheora       enable Theora encoding via libtheora [no]
200   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
201   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
202   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
203   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
204   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
205   --enable-libx264         enable H.264 encoding via x264 [no]
206   --enable-libxavs         enable AVS encoding via xavs [no]
207   --enable-libxvid         enable Xvid encoding via xvidcore,
208                            native MPEG-4/Xvid encoder exists [no]
209   --enable-openssl         enable openssl [no]
210   --enable-x11grab         enable X11 grabbing [no]
211   --enable-zlib            enable zlib [autodetect]
212
213 Advanced options (experts only):
214   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
215   --enable-cross-compile   assume a cross-compiler is used
216   --sysroot=PATH           root of cross-build tree
217   --sysinclude=PATH        location of cross-build system headers
218   --target-os=OS           compiler targets OS [$target_os]
219   --target-exec=CMD        command to run executables on target
220   --target-path=DIR        path to view of build directory on target
221   --target-samples=DIR     path to samples directory on target
222   --toolchain=NAME         set tool defaults according to NAME
223   --nm=NM                  use nm tool
224   --ar=AR                  use archive tool AR [$ar_default]
225   --as=AS                  use assembler AS [$as_default]
226   --cc=CC                  use C compiler CC [$cc_default]
227   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
228   --ld=LD                  use linker LD
229   --host-cc=HOSTCC         use host C compiler HOSTCC
230   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
231   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
232   --host-ld=HOSTLD         use host linker HOSTLD
233   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
234   --host-libs=HLIBS        use libs HLIBS when linking for host
235   --host-os=OS             compiler host OS [$target_os]
236   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
237   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
238   --extra-libs=ELIBS       add ELIBS [$ELIBS]
239   --extra-version=STRING   version string suffix []
240   --optflags=OPTFLAGS      override optimization-related compiler flags
241   --build-suffix=SUFFIX    library name suffix []
242   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
243   --arch=ARCH              select architecture [$arch]
244   --cpu=CPU                select the minimum required CPU (affects
245                            instruction selection, may crash on older CPUs)
246   --enable-pic             build position-independent code
247   --enable-sram            allow use of on-chip SRAM
248   --enable-thumb           compile for Thumb instruction set
249   --disable-symver         disable symbol versioning
250   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
251   --disable-safe-bitstream-reader
252                            disable buffer boundary checking in bitreaders
253                            (faster, but may crash)
254   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
255   --enable-lto             use link-time optimization
256
257 Optimization options (experts only):
258   --disable-asm            disable all assembler optimizations
259   --disable-altivec        disable AltiVec optimizations
260   --disable-amd3dnow       disable 3DNow! optimizations
261   --disable-amd3dnowext    disable 3DNow! extended optimizations
262   --disable-mmx            disable MMX optimizations
263   --disable-mmxext         disable MMXEXT optimizations
264   --disable-sse            disable SSE optimizations
265   --disable-sse2           disable SSE2 optimizations
266   --disable-sse3           disable SSE3 optimizations
267   --disable-ssse3          disable SSSE3 optimizations
268   --disable-sse4           disable SSE4 optimizations
269   --disable-sse42          disable SSE4.2 optimizations
270   --disable-avx            disable AVX optimizations
271   --disable-fma4           disable FMA4 optimizations
272   --disable-armv5te        disable armv5te optimizations
273   --disable-armv6          disable armv6 optimizations
274   --disable-armv6t2        disable armv6t2 optimizations
275   --disable-vfp            disable VFP optimizations
276   --disable-neon           disable NEON optimizations
277   --disable-vis            disable VIS optimizations
278   --disable-inline-asm     disable use of inline assembler
279   --disable-yasm           disable use of yasm assembler
280
281 Developer options (useful when working on Libav itself):
282   --disable-debug          disable debugging symbols
283   --enable-debug=LEVEL     set the debug level [$debuglevel]
284   --disable-optimizations  disable compiler optimizations
285   --enable-extra-warnings  enable more compiler warnings
286   --samples=PATH           location of test samples for FATE, if not set use
287                            \$LIBAV_SAMPLES at make invocation time.
288   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
289                            should be used only for debugging purposes)
290   --enable-random          randomly enable/disable components
291   --disable-random
292   --enable-random=LIST     randomly enable/disable specific components or
293   --disable-random=LIST    component groups. LIST is a comma-separated list
294                            of NAME[:PROB] entries where NAME is a component
295                            (group) and PROB the probability associated with
296                            NAME (default 0.5).
297   --random-seed=VALUE      seed value for --enable/disable-random
298
299 NOTE: Object files are built at the place where configure is launched.
300 EOF
301   exit 0
302 }
303
304 quotes='""'
305
306 log(){
307     echo "$@" >> $logfile
308 }
309
310 log_file(){
311     log BEGIN $1
312     pr -n -t $1 >> $logfile
313     log END $1
314 }
315
316 echolog(){
317     log "$@"
318     echo "$@"
319 }
320
321 warn(){
322     log "WARNING: $*"
323     WARNINGS="${WARNINGS}WARNING: $*\n"
324 }
325
326 die(){
327     echolog "$@"
328     cat <<EOF
329
330 If you think configure made a mistake, make sure you are using the latest
331 version from Git.  If the latest version fails, report the problem to the
332 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
333 EOF
334     if disabled logging; then
335         cat <<EOF
336 Rerun configure with logging enabled (do not use --disable-logging), and
337 include the log this produces with your report.
338 EOF
339     else
340         cat <<EOF
341 Include the log file "$logfile" produced by configure as this will help
342 solving the problem.
343 EOF
344     fi
345     exit 1
346 }
347
348 # Avoid locale weirdness, besides we really just want to translate ASCII.
349 toupper(){
350     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
351 }
352
353 tolower(){
354     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
355 }
356
357 c_escape(){
358     echo "$*" | sed 's/["\\]/\\\0/g'
359 }
360
361 sh_quote(){
362     v=$(echo "$1" | sed "s/'/'\\\\''/g")
363     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
364     echo "$v"
365 }
366
367 cleanws(){
368     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
369 }
370
371 filter(){
372     pat=$1
373     shift
374     for v; do
375         eval "case $v in $pat) echo $v ;; esac"
376     done
377 }
378
379 filter_out(){
380     pat=$1
381     shift
382     for v; do
383         eval "case $v in $pat) ;; *) echo $v ;; esac"
384     done
385 }
386
387 map(){
388     m=$1
389     shift
390     for v; do eval $m; done
391 }
392
393 add_suffix(){
394     suffix=$1
395     shift
396     for v; do echo ${v}${suffix}; done
397 }
398
399 set_all(){
400     value=$1
401     shift
402     for var in $*; do
403         eval $var=$value
404     done
405 }
406
407 set_weak(){
408     value=$1
409     shift
410     for var; do
411         eval : \${$var:=$value}
412     done
413 }
414
415 sanitize_var_name(){
416     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
417 }
418
419 set_safe(){
420     var=$1
421     shift
422     eval $(sanitize_var_name "$var")='$*'
423 }
424
425 get_safe(){
426     eval echo \$$(sanitize_var_name "$1")
427 }
428
429 pushvar(){
430     for pvar in $*; do
431         eval level=\${${pvar}_level:=0}
432         eval ${pvar}_${level}="\$$pvar"
433         eval ${pvar}_level=$(($level+1))
434     done
435 }
436
437 popvar(){
438     for pvar in $*; do
439         eval level=\${${pvar}_level:-0}
440         test $level = 0 && continue
441         eval level=$(($level-1))
442         eval $pvar="\${${pvar}_${level}}"
443         eval ${pvar}_level=$level
444         eval unset ${pvar}_${level}
445     done
446 }
447
448 enable(){
449     set_all yes $*
450 }
451
452 disable(){
453     set_all no $*
454 }
455
456 enable_weak(){
457     set_weak yes $*
458 }
459
460 disable_weak(){
461     set_weak no $*
462 }
463
464 enable_safe(){
465     for var; do
466         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
467     done
468 }
469
470 disable_safe(){
471     for var; do
472         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
473     done
474 }
475
476 do_enable_deep(){
477     for var; do
478         enabled $var && continue
479         eval sel="\$${var}_select"
480         eval sgs="\$${var}_suggest"
481         pushvar var sgs
482         enable_deep $sel
483         popvar sgs
484         enable_deep_weak $sgs
485         popvar var
486     done
487 }
488
489 enable_deep(){
490     do_enable_deep $*
491     enable $*
492 }
493
494 enable_deep_weak(){
495     for var; do
496         disabled $var && continue
497         pushvar var
498         do_enable_deep $var
499         popvar var
500         enable_weak $var
501     done
502 }
503
504 enabled(){
505     test "${1#!}" = "$1" && op== || op=!=
506     eval test "x\$${1#!}" $op "xyes"
507 }
508
509 disabled(){
510     test "${1#!}" = "$1" && op== || op=!=
511     eval test "x\$${1#!}" $op "xno"
512 }
513
514 enabled_all(){
515     for opt; do
516         enabled $opt || return 1
517     done
518 }
519
520 disabled_all(){
521     for opt; do
522         disabled $opt || return 1
523     done
524 }
525
526 enabled_any(){
527     for opt; do
528         enabled $opt && return 0
529     done
530 }
531
532 disabled_any(){
533     for opt; do
534         disabled $opt && return 0
535     done
536     return 1
537 }
538
539 set_default(){
540     for opt; do
541         eval : \${$opt:=\$${opt}_default}
542     done
543 }
544
545 is_in(){
546     value=$1
547     shift
548     for var in $*; do
549         [ $var = $value ] && return 0
550     done
551     return 1
552 }
553
554 do_check_deps(){
555     for cfg; do
556         cfg="${cfg#!}"
557         enabled ${cfg}_checking && die "Circular dependency for $cfg."
558         disabled ${cfg}_checking && continue
559         enable ${cfg}_checking
560         append allopts $cfg
561
562         eval dep_all="\$${cfg}_deps"
563         eval dep_any="\$${cfg}_deps_any"
564         eval dep_sel="\$${cfg}_select"
565         eval dep_sgs="\$${cfg}_suggest"
566         eval dep_ifa="\$${cfg}_if"
567         eval dep_ifn="\$${cfg}_if_any"
568
569         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
570         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
571         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
572
573         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
574         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
575         enabled_all  $dep_all || disable $cfg
576         enabled_any  $dep_any || disable $cfg
577         disabled_any $dep_sel && disable $cfg
578
579         if enabled $cfg; then
580             enable_deep $dep_sel
581             enable_deep_weak $dep_sgs
582         fi
583
584         disable ${cfg}_checking
585     done
586 }
587
588 check_deps(){
589     unset allopts
590
591     do_check_deps "$@"
592
593     for cfg in $allopts; do
594         enabled $cfg || continue
595         eval dep_extralibs="\$${cfg}_extralibs"
596         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
597     done
598 }
599
600 print_config(){
601     pfx=$1
602     files=$2
603     shift 2
604     map 'eval echo "$v \${$v:-no}"' "$@" |
605     awk "BEGIN { split(\"$files\", files) }
606         {
607             c = \"$pfx\" toupper(\$1);
608             v = \$2;
609             sub(/yes/, 1, v);
610             sub(/no/,  0, v);
611             for (f in files) {
612                 file = files[f];
613                 if (file ~ /\\.h\$/) {
614                     printf(\"#define %s %d\\n\", c, v) >>file;
615                 } else if (file ~ /\\.asm\$/) {
616                     printf(\"%%define %s %d\\n\", c, v) >>file;
617                 } else if (file ~ /\\.mak\$/) {
618                     n = -v ? \"\" : \"!\";
619                     printf(\"%s%s=yes\\n\", n, c) >>file;
620                 }
621             }
622         }"
623 }
624
625 print_enabled(){
626     suf=$1
627     shift
628     for v; do
629         enabled $v && printf "%s\n" ${v%$suf};
630     done
631 }
632
633 append(){
634     var=$1
635     shift
636     eval "$var=\"\$$var $*\""
637 }
638
639 prepend(){
640     var=$1
641     shift
642     eval "$var=\"$* \$$var\""
643 }
644
645 add_cppflags(){
646     append CPPFLAGS "$@"
647 }
648
649 add_cflags(){
650     append CFLAGS $($cflags_filter "$@")
651 }
652
653 add_asflags(){
654     append ASFLAGS $($asflags_filter "$@")
655 }
656
657 add_ldflags(){
658     append LDFLAGS $($ldflags_filter "$@")
659 }
660
661 add_extralibs(){
662     prepend extralibs $($ldflags_filter "$@")
663 }
664
665 add_host_cppflags(){
666     append host_cppflags "$@"
667 }
668
669 add_host_cflags(){
670     append host_cflags $($host_cflags_filter "$@")
671 }
672
673 add_host_ldflags(){
674     append host_ldflags $($host_ldflags_filter "$@")
675 }
676
677 add_compat(){
678     append compat_objs $1
679     shift
680     map 'add_cppflags -D$v' "$@"
681 }
682
683 check_cmd(){
684     log "$@"
685     "$@" >> $logfile 2>&1
686 }
687
688 cc_o(){
689     eval printf '%s\\n' $CC_O
690 }
691
692 cc_e(){
693     eval printf '%s\\n' $CC_E
694 }
695
696 check_cc(){
697     log check_cc "$@"
698     cat > $TMPC
699     log_file $TMPC
700     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
701 }
702
703 check_cpp(){
704     log check_cpp "$@"
705     cat > $TMPC
706     log_file $TMPC
707     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
708 }
709
710 as_o(){
711     eval printf '%s\\n' $AS_O
712 }
713
714 check_as(){
715     log check_as "$@"
716     cat > $TMPS
717     log_file $TMPS
718     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
719 }
720
721 check_inline_asm(){
722     log check_inline_asm "$@"
723     name="$1"
724     code="$2"
725     shift 2
726     disable $name
727     check_cc "$@" <<EOF && enable $name
728 void foo(void){ __asm__ volatile($code); }
729 EOF
730 }
731
732 check_insn(){
733     log check_insn "$@"
734     check_inline_asm ${1}_inline "\"$2\""
735     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
736 }
737
738 check_yasm(){
739     log check_yasm "$@"
740     echo "$1" > $TMPS
741     log_file $TMPS
742     shift 1
743     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
744 }
745
746 ld_o(){
747     eval printf '%s\\n' $LD_O
748 }
749
750 check_ld(){
751     log check_ld "$@"
752     flags=$(filter_out '-l*' "$@")
753     libs=$(filter '-l*' "$@")
754     check_cc $($cflags_filter $flags) || return
755     flags=$($ldflags_filter $flags)
756     libs=$($ldflags_filter $libs)
757     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
758 }
759
760 check_code(){
761     log check_code "$@"
762     check=$1
763     headers=$2
764     code=$3
765     shift 3
766     {
767         for hdr in $headers; do
768             echo "#include <$hdr>"
769         done
770         echo "int main(void) { $code; return 0; }"
771     } | check_$check "$@"
772 }
773
774 check_cppflags(){
775     log check_cppflags "$@"
776     check_cc "$@" <<EOF && append CPPFLAGS "$@"
777 int x;
778 EOF
779 }
780
781 check_cflags(){
782     log check_cflags "$@"
783     set -- $($cflags_filter "$@")
784     check_cc "$@" <<EOF && append CFLAGS "$@"
785 int x;
786 EOF
787 }
788
789 test_ldflags(){
790     log test_ldflags "$@"
791     check_ld "$@" <<EOF
792 int main(void){ return 0; }
793 EOF
794 }
795
796 check_ldflags(){
797     log check_ldflags "$@"
798     test_ldflags "$@" && add_ldflags "$@"
799 }
800
801 check_header(){
802     log check_header "$@"
803     header=$1
804     shift
805     disable_safe $header
806     check_cpp "$@" <<EOF && enable_safe $header
807 #include <$header>
808 int x;
809 EOF
810 }
811
812 check_func(){
813     log check_func "$@"
814     func=$1
815     shift
816     disable $func
817     check_ld "$@" <<EOF && enable $func
818 extern int $func();
819 int main(void){ $func(); }
820 EOF
821 }
822
823 check_mathfunc(){
824     log check_mathfunc "$@"
825     func=$1
826     narg=$2
827     shift 2
828     test $narg = 2 && args="f, g" || args="f"
829     disable $func
830     check_ld "$@" <<EOF && enable $func
831 #include <math.h>
832 float foo(float f, float g) { return $func($args); }
833 int main(void){ return 0; }
834 EOF
835 }
836
837 check_func_headers(){
838     log check_func_headers "$@"
839     headers=$1
840     funcs=$2
841     shift 2
842     {
843         for hdr in $headers; do
844             echo "#include <$hdr>"
845         done
846         for func in $funcs; do
847             echo "long check_$func(void) { return (long) $func; }"
848         done
849         echo "int main(void) { return 0; }"
850     } | check_ld "$@" && enable $funcs && enable_safe $headers
851 }
852
853 check_cpp_condition(){
854     log check_cpp_condition "$@"
855     header=$1
856     condition=$2
857     shift 2
858     check_cpp "$@" <<EOF
859 #include <$header>
860 #if !($condition)
861 #error "unsatisfied condition: $condition"
862 #endif
863 EOF
864 }
865
866 check_lib(){
867     log check_lib "$@"
868     header="$1"
869     func="$2"
870     shift 2
871     check_header $header && check_func $func "$@" && add_extralibs "$@"
872 }
873
874 check_lib2(){
875     log check_lib2 "$@"
876     headers="$1"
877     funcs="$2"
878     shift 2
879     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
880 }
881
882 check_pkg_config(){
883     log check_pkg_config "$@"
884     pkg="$1"
885     headers="$2"
886     funcs="$3"
887     shift 3
888     check_cmd $pkg_config --exists --print-errors $pkg || return
889     pkg_cflags=$($pkg_config --cflags $pkg)
890     pkg_libs=$($pkg_config --libs $pkg)
891     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
892         set_safe ${pkg}_cflags $pkg_cflags   &&
893         set_safe ${pkg}_libs   $pkg_libs
894 }
895
896 check_exec(){
897     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
898 }
899
900 check_exec_crash(){
901     code=$(cat)
902
903     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
904     # are safe but may not be available everywhere.  Thus we use
905     # raise(SIGTERM) instead.  The check is run in a subshell so we
906     # can redirect the "Terminated" message from the shell.  SIGBUS
907     # is not defined by standard C so it is used conditionally.
908
909     (check_exec "$@") >> $logfile 2>&1 <<EOF
910 #include <signal.h>
911 static void sighandler(int sig){
912     raise(SIGTERM);
913 }
914 int foo(void){
915     $code
916 }
917 int (*func_ptr)(void) = foo;
918 int main(void){
919     signal(SIGILL, sighandler);
920     signal(SIGFPE, sighandler);
921     signal(SIGSEGV, sighandler);
922 #ifdef SIGBUS
923     signal(SIGBUS, sighandler);
924 #endif
925     return func_ptr();
926 }
927 EOF
928 }
929
930 check_type(){
931     log check_type "$@"
932     headers=$1
933     type=$2
934     shift 2
935     disable_safe "$type"
936     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
937 }
938
939 check_struct(){
940     log check_struct "$@"
941     headers=$1
942     struct=$2
943     member=$3
944     shift 3
945     disable_safe "${struct}_${member}"
946     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
947         enable_safe "${struct}_${member}"
948 }
949
950 check_builtin(){
951     log check_builtin "$@"
952     name=$1
953     headers=$2
954     builtin=$3
955     shift 3
956     disable "$name"
957     check_code ld "$headers" "$builtin" "$@" && enable "$name"
958 }
959
960 require(){
961     name="$1"
962     header="$2"
963     func="$3"
964     shift 3
965     check_lib $header $func "$@" || die "ERROR: $name not found"
966 }
967
968 require2(){
969     name="$1"
970     headers="$2"
971     func="$3"
972     shift 3
973     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
974 }
975
976 require_pkg_config(){
977     pkg="$1"
978     check_pkg_config "$@" || die "ERROR: $pkg not found"
979     add_cflags    $(get_safe ${pkg}_cflags)
980     add_extralibs $(get_safe ${pkg}_libs)
981 }
982
983 hostcc_o(){
984     eval printf '%s\\n' $HOSTCC_O
985 }
986
987 check_host_cc(){
988     log check_host_cc "$@"
989     cat > $TMPC
990     log_file $TMPC
991     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
992 }
993
994 check_host_cppflags(){
995     log check_host_cppflags "$@"
996     check_host_cc "$@" <<EOF && append host_cppflags "$@"
997 int x;
998 EOF
999 }
1000
1001 check_host_cflags(){
1002     log check_host_cflags "$@"
1003     set -- $($host_cflags_filter "$@")
1004     check_host_cc "$@" <<EOF && append host_cflags "$@"
1005 int x;
1006 EOF
1007 }
1008
1009 apply(){
1010     file=$1
1011     shift
1012     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1013 }
1014
1015 cp_if_changed(){
1016     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1017     mkdir -p "$(dirname $2)"
1018     $cp_f "$1" "$2"
1019 }
1020
1021 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1022 # system-dependent things.
1023
1024 COMPONENT_LIST="
1025     bsfs
1026     decoders
1027     demuxers
1028     encoders
1029     filters
1030     hwaccels
1031     indevs
1032     muxers
1033     outdevs
1034     parsers
1035     protocols
1036 "
1037
1038 EXTERNAL_LIBRARY_LIST="
1039     avisynth
1040     bzlib
1041     frei0r
1042     gnutls
1043     libcdio
1044     libdc1394
1045     libfaac
1046     libfdk_aac
1047     libfreetype
1048     libgsm
1049     libilbc
1050     libmp3lame
1051     libopencore_amrnb
1052     libopencore_amrwb
1053     libopencv
1054     libopenjpeg
1055     libopus
1056     libpulse
1057     librtmp
1058     libschroedinger
1059     libspeex
1060     libtheora
1061     libvo_aacenc
1062     libvo_amrwbenc
1063     libvorbis
1064     libvpx
1065     libwavpack
1066     libx264
1067     libxavs
1068     libxvid
1069     openssl
1070     x11grab
1071     zlib
1072 "
1073
1074 HWACCEL_LIST="
1075     dxva2
1076     vaapi
1077     vda
1078     vdpau
1079 "
1080 LIBRARY_LIST="
1081     avcodec
1082     avdevice
1083     avfilter
1084     avformat
1085     avresample
1086     avutil
1087     swscale
1088 "
1089
1090 PROGRAM_LIST="
1091     avconv
1092     avplay
1093     avprobe
1094     avserver
1095 "
1096
1097 CONFIG_LIST="
1098     $COMPONENT_LIST
1099     $EXTERNAL_LIBRARY_LIST
1100     $HWACCEL_LIST
1101     $LIBRARY_LIST
1102     $PROGRAM_LIST
1103     dct
1104     doc
1105     error_resilience
1106     fft
1107     gpl
1108     gray
1109     hardcoded_tables
1110     lsp
1111     lzo
1112     mdct
1113     memalign_hack
1114     network
1115     nonfree
1116     pic
1117     rdft
1118     runtime_cpudetect
1119     safe_bitstream_reader
1120     shared
1121     small
1122     sram
1123     static
1124     swscale_alpha
1125     thumb
1126     version3
1127     xmm_clobber_test
1128 "
1129
1130 THREADS_LIST='
1131     pthreads
1132     w32threads
1133 '
1134
1135 ATOMICS_LIST='
1136     atomics_gcc
1137     atomics_suncc
1138     atomics_win32
1139 '
1140
1141 ARCH_LIST='
1142     aarch64
1143     alpha
1144     arm
1145     avr32
1146     avr32_ap
1147     avr32_uc
1148     bfin
1149     ia64
1150     m68k
1151     mips
1152     mips64
1153     parisc
1154     ppc
1155     ppc64
1156     s390
1157     sh4
1158     sparc
1159     sparc64
1160     tilegx
1161     tilepro
1162     tomi
1163     x86
1164     x86_32
1165     x86_64
1166 '
1167
1168 ARCH_EXT_LIST_ARM='
1169     armv5te
1170     armv6
1171     armv6t2
1172     neon
1173     vfp
1174     vfpv3
1175 '
1176
1177 ARCH_EXT_LIST_X86='
1178     amd3dnow
1179     amd3dnowext
1180     avx
1181     fma4
1182     i686
1183     mmx
1184     mmxext
1185     sse
1186     sse2
1187     sse3
1188     sse4
1189     sse42
1190     ssse3
1191 '
1192
1193 ARCH_EXT_LIST="
1194     $ARCH_EXT_LIST_ARM
1195     $ARCH_EXT_LIST_X86
1196     altivec
1197     ppc4xx
1198     vis
1199 "
1200
1201 HAVE_LIST_CMDLINE='
1202     inline_asm
1203     symver
1204     yasm
1205 '
1206
1207 HAVE_LIST_PUB='
1208     bigendian
1209     fast_unaligned
1210 '
1211
1212 MATH_FUNCS="
1213     atanf
1214     atan2f
1215     cbrtf
1216     cosf
1217     exp2
1218     exp2f
1219     expf
1220     isinf
1221     isnan
1222     ldexpf
1223     llrint
1224     llrintf
1225     log2
1226     log2f
1227     log10f
1228     lrint
1229     lrintf
1230     powf
1231     rint
1232     round
1233     roundf
1234     sinf
1235     trunc
1236     truncf
1237 "
1238
1239 HAVE_LIST="
1240     $ARCH_EXT_LIST
1241     $(add_suffix _external $ARCH_EXT_LIST)
1242     $(add_suffix _inline   $ARCH_EXT_LIST)
1243     $HAVE_LIST_CMDLINE
1244     $HAVE_LIST_PUB
1245     $THREADS_LIST
1246     $ATOMICS_LIST
1247     $MATH_FUNCS
1248     aligned_malloc
1249     aligned_stack
1250     alsa_asoundlib_h
1251     altivec_h
1252     arpa_inet_h
1253     asm_mod_q
1254     asm_mod_y
1255     atomic_cas_ptr
1256     atomics_native
1257     attribute_may_alias
1258     attribute_packed
1259     cdio_paranoia_h
1260     cdio_paranoia_paranoia_h
1261     closesocket
1262     CommandLineToArgvW
1263     cpunop
1264     CryptGenRandom
1265     dcbzl
1266     dev_bktr_ioctl_bt848_h
1267     dev_bktr_ioctl_meteor_h
1268     dev_ic_bt8xx_h
1269     dev_video_bktr_ioctl_bt848_h
1270     dev_video_meteor_ioctl_meteor_h
1271     direct_h
1272     dlfcn_h
1273     dlopen
1274     dos_paths
1275     dxva_h
1276     ebp_available
1277     ebx_available
1278     fast_64bit
1279     fast_clz
1280     fast_cmov
1281     fcntl
1282     fork
1283     getaddrinfo
1284     gethrtime
1285     getopt
1286     GetProcessAffinityMask
1287     GetProcessMemoryInfo
1288     GetProcessTimes
1289     GetSystemTimeAsFileTime
1290     getrusage
1291     getservbyport
1292     gettimeofday
1293     gnu_as
1294     gsm_h
1295     ibm_asm
1296     inet_aton
1297     io_h
1298     inline_asm_labels
1299     isatty
1300     jack_port_get_latency_range
1301     ldbrx
1302     libdc1394_1
1303     libdc1394_2
1304     local_aligned_16
1305     local_aligned_8
1306     localtime_r
1307     loongson
1308     machine_ioctl_bt848_h
1309     machine_ioctl_meteor_h
1310     machine_rw_barrier
1311     malloc_h
1312     MapViewOfFile
1313     memalign
1314     MemoryBarrier
1315     mkstemp
1316     mm_empty
1317     mmap
1318     mprotect
1319     msvcrt
1320     nanosleep
1321     poll_h
1322     posix_memalign
1323     pragma_deprecated
1324     rdtsc
1325     sched_getaffinity
1326     sdl
1327     SetConsoleTextAttribute
1328     setmode
1329     setrlimit
1330     Sleep
1331     sndio_h
1332     socklen_t
1333     soundcard_h
1334     strerror_r
1335     strptime
1336     strtok_r
1337     struct_addrinfo
1338     struct_group_source_req
1339     struct_ip_mreq_source
1340     struct_ipv6_mreq
1341     struct_pollfd
1342     struct_rusage_ru_maxrss
1343     struct_sockaddr_in6
1344     struct_sockaddr_sa_len
1345     struct_sockaddr_storage
1346     struct_v4l2_frmivalenum_discrete
1347     symver_asm_label
1348     symver_gnu_asm
1349     sync_val_compare_and_swap
1350     sysconf
1351     sysctl
1352     sys_mman_h
1353     sys_param_h
1354     sys_resource_h
1355     sys_select_h
1356     sys_soundcard_h
1357     sys_time_h
1358     sys_un_h
1359     sys_videoio_h
1360     threads
1361     unistd_h
1362     usleep
1363     vfp_args
1364     VirtualAlloc
1365     windows_h
1366     winsock2_h
1367     xform_asm
1368     xmm_clobbers
1369 "
1370
1371 # options emitted with CONFIG_ prefix but not available on the command line
1372 CONFIG_EXTRA="
1373     aandcttables
1374     ac3dsp
1375     audio_frame_queue
1376     dsputil
1377     gcrypt
1378     golomb
1379     gplv3
1380     h264chroma
1381     h264dsp
1382     h264pred
1383     h264qpel
1384     hpeldsp
1385     huffman
1386     lgplv3
1387     lpc
1388     mpegaudio
1389     mpegaudiodsp
1390     mpegvideo
1391     mpegvideoenc
1392     nettle
1393     rangecoder
1394     riffdec
1395     riffenc
1396     rtpdec
1397     rtpenc_chain
1398     sinewin
1399     videodsp
1400     vp3dsp
1401 "
1402
1403 CMDLINE_SELECT="
1404     $ARCH_EXT_LIST
1405     $CONFIG_LIST
1406     $HAVE_LIST_CMDLINE
1407     $THREADS_LIST
1408     asm
1409     cross_compile
1410     debug
1411     extra_warnings
1412     logging
1413     lto
1414     optimizations
1415 "
1416
1417 PATHS_LIST='
1418     bindir
1419     datadir
1420     docdir
1421     incdir
1422     libdir
1423     mandir
1424     prefix
1425     shlibdir
1426 '
1427
1428 CMDLINE_SET="
1429     $PATHS_LIST
1430     ar
1431     arch
1432     as
1433     build_suffix
1434     cc
1435     cpu
1436     cross_prefix
1437     dep_cc
1438     extra_version
1439     host_cc
1440     host_cflags
1441     host_ld
1442     host_ldflags
1443     host_libs
1444     host_os
1445     ld
1446     logfile
1447     malloc_prefix
1448     nm
1449     optflags
1450     pkg_config
1451     random_seed
1452     samples
1453     sysinclude
1454     sysroot
1455     target_exec
1456     target_os
1457     target_path
1458     target_samples
1459     toolchain
1460 "
1461
1462 CMDLINE_APPEND="
1463     extra_cflags
1464     host_cppflags
1465 "
1466
1467 # code dependency declarations
1468
1469 # architecture extensions
1470
1471 armv5te_deps="arm"
1472 armv6_deps="arm"
1473 armv6t2_deps="arm"
1474 neon_deps="arm"
1475 vfp_deps="arm"
1476 vfpv3_deps="vfp"
1477
1478 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1479
1480 altivec_deps="ppc"
1481 ppc4xx_deps="ppc"
1482
1483 vis_deps="sparc"
1484
1485 cpunop_deps="i686"
1486 x86_64_select="i686"
1487 x86_64_suggest="fast_cmov"
1488
1489 amd3dnow_deps="mmx"
1490 amd3dnowext_deps="amd3dnow"
1491 mmx_deps="x86"
1492 mmxext_deps="mmx"
1493 sse_deps="mmxext"
1494 sse2_deps="sse"
1495 sse3_deps="sse2"
1496 ssse3_deps="sse3"
1497 sse4_deps="ssse3"
1498 sse42_deps="sse4"
1499 avx_deps="sse42"
1500 fma4_deps="avx"
1501
1502 mmx_external_deps="yasm"
1503 mmx_inline_deps="inline_asm"
1504 mmx_suggest="mmx_external mmx_inline"
1505
1506 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1507     eval dep=\$${ext}_deps
1508     eval ${ext}_external_deps='"${dep}_external"'
1509     eval ${ext}_inline_deps='"${dep}_inline"'
1510     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1511 done
1512
1513 aligned_stack_if_any="ppc x86"
1514 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1515 fast_clz_if_any="alpha avr32 mips ppc x86"
1516 fast_unaligned_if_any="ppc x86"
1517
1518 inline_asm_deps="!tms470"
1519 need_memalign="altivec neon sse"
1520
1521 symver_if_any="symver_asm_label symver_gnu_asm"
1522
1523 log2_deps="!msvcrt"
1524
1525 # subsystems
1526 dct_select="rdft"
1527 error_resilience_select="dsputil"
1528 lpc_select="dsputil"
1529 mdct_select="fft"
1530 rdft_select="fft"
1531 mpegaudio_select="mpegaudiodsp"
1532 mpegaudiodsp_select="dct"
1533 mpegvideo_select="dsputil hpeldsp videodsp"
1534 mpegvideoenc_select="mpegvideo"
1535
1536 # decoders / encoders
1537 aac_decoder_select="mdct sinewin"
1538 aac_encoder_select="audio_frame_queue mdct sinewin"
1539 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1540 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1541 ac3_encoder_select="mdct ac3dsp dsputil"
1542 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1543 aic_decoder_select="dsputil golomb"
1544 alac_encoder_select="lpc"
1545 als_decoder_select="dsputil"
1546 amrnb_decoder_select="lsp"
1547 amrwb_decoder_select="lsp"
1548 amv_decoder_select="dsputil hpeldsp"
1549 ape_decoder_select="dsputil"
1550 asv1_decoder_select="dsputil"
1551 asv1_encoder_select="dsputil"
1552 asv2_decoder_select="dsputil"
1553 asv2_encoder_select="dsputil"
1554 atrac1_decoder_select="mdct sinewin"
1555 atrac3_decoder_select="mdct"
1556 bink_decoder_select="dsputil hpeldsp"
1557 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1558 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1559 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1560 cllc_decoder_select="dsputil"
1561 comfortnoise_encoder_select="lpc"
1562 cook_decoder_select="dsputil mdct sinewin"
1563 cscd_decoder_select="lzo"
1564 cscd_decoder_suggest="zlib"
1565 dca_decoder_select="mdct"
1566 dnxhd_decoder_select="dsputil"
1567 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1568 dvvideo_decoder_select="dsputil"
1569 dvvideo_encoder_select="dsputil"
1570 dxa_decoder_deps="zlib"
1571 eac3_decoder_select="ac3_decoder"
1572 eac3_encoder_select="ac3_encoder"
1573 eamad_decoder_select="aandcttables dsputil mpegvideo"
1574 eatgq_decoder_select="aandcttables dsputil"
1575 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1576 ffv1_decoder_select="dsputil golomb rangecoder"
1577 ffv1_encoder_select="dsputil rangecoder"
1578 ffvhuff_decoder_select="dsputil"
1579 ffvhuff_encoder_select="dsputil huffman"
1580 flac_decoder_select="golomb"
1581 flac_encoder_select="dsputil golomb lpc"
1582 flashsv_decoder_deps="zlib"
1583 flashsv_encoder_deps="zlib"
1584 flashsv2_decoder_deps="zlib"
1585 flv_decoder_select="h263_decoder"
1586 flv_encoder_select="h263_encoder"
1587 fourxm_decoder_select="dsputil"
1588 fraps_decoder_select="dsputil huffman"
1589 g2m_decoder_deps="zlib"
1590 g2m_decoder_select="dsputil"
1591 h261_decoder_select="error_resilience mpegvideo"
1592 h261_encoder_select="aandcttables mpegvideoenc"
1593 h263_decoder_select="error_resilience h263_parser mpegvideo"
1594 h263_encoder_select="aandcttables mpegvideoenc"
1595 h263i_decoder_select="h263_decoder"
1596 h263p_encoder_select="h263_encoder"
1597 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1598 h264_decoder_suggest="error_resilience"
1599 huffyuv_decoder_select="dsputil"
1600 huffyuv_encoder_select="dsputil huffman"
1601 iac_decoder_select="dsputil fft mdct sinewin"
1602 imc_decoder_select="dsputil fft mdct sinewin"
1603 indeo3_decoder_select="hpeldsp"
1604 interplay_video_decoder_select="hpeldsp"
1605 jpegls_decoder_select="dsputil golomb hpeldsp"
1606 jpegls_encoder_select="golomb"
1607 jv_decoder_select="dsputil"
1608 lagarith_decoder_select="dsputil"
1609 ljpeg_encoder_select="aandcttables mpegvideoenc"
1610 loco_decoder_select="golomb"
1611 mdec_decoder_select="dsputil error_resilience mpegvideo"
1612 metasound_decoder_select="lsp mdct sinewin"
1613 mimic_decoder_select="dsputil hpeldsp"
1614 mjpeg_decoder_select="dsputil hpeldsp"
1615 mjpegb_decoder_select="dsputil hpeldsp"
1616 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1617 mlp_decoder_select="dsputil mlp_parser"
1618 motionpixels_decoder_select="dsputil"
1619 mp1_decoder_select="mpegaudio"
1620 mp1float_decoder_select="mpegaudio"
1621 mp2_decoder_select="mpegaudio"
1622 mp2float_decoder_select="mpegaudio"
1623 mp3_decoder_select="mpegaudio"
1624 mp3adu_decoder_select="mpegaudio"
1625 mp3adufloat_decoder_select="mpegaudio"
1626 mp3float_decoder_select="mpegaudio"
1627 mp3on4_decoder_select="mpegaudio"
1628 mp3on4float_decoder_select="mpegaudio"
1629 mpc7_decoder_select="dsputil mpegaudiodsp"
1630 mpc8_decoder_select="dsputil mpegaudiodsp"
1631 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1632 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1633 mpeg1video_decoder_select="error_resilience mpegvideo"
1634 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1635 mpeg2video_decoder_select="error_resilience mpegvideo"
1636 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1637 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1638 mpeg4_encoder_select="h263_encoder"
1639 msmpeg4v1_decoder_select="h263_decoder"
1640 msmpeg4v2_decoder_select="h263_decoder"
1641 msmpeg4v2_encoder_select="h263_encoder"
1642 msmpeg4v3_decoder_select="h263_decoder"
1643 msmpeg4v3_encoder_select="h263_encoder"
1644 mss2_decoder_select="error_resilience vc1_decoder"
1645 mxpeg_decoder_select="dsputil hpeldsp"
1646 nellymoser_decoder_select="mdct sinewin"
1647 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1648 nuv_decoder_select="dsputil lzo"
1649 png_decoder_deps="zlib"
1650 png_decoder_select="dsputil"
1651 png_encoder_deps="zlib"
1652 png_encoder_select="dsputil"
1653 prores_decoder_select="dsputil"
1654 prores_encoder_select="dsputil"
1655 qcelp_decoder_select="lsp"
1656 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1657 ra_144_encoder_select="audio_frame_queue lpc"
1658 ralf_decoder_select="golomb"
1659 rv10_decoder_select="error_resilience h263_decoder"
1660 rv10_encoder_select="h263_encoder"
1661 rv20_decoder_select="error_resilience h263_decoder"
1662 rv20_encoder_select="h263_encoder"
1663 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1664 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1665 shorten_decoder_select="golomb"
1666 sipr_decoder_select="lsp"
1667 sp5x_decoder_select="dsputil hpeldsp"
1668 svq1_decoder_select="hpeldsp"
1669 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1670 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1671 svq3_decoder_suggest="error_resilience zlib"
1672 tak_decoder_select="dsputil"
1673 theora_decoder_select="vp3_decoder"
1674 tiff_decoder_suggest="zlib"
1675 tiff_encoder_suggest="zlib"
1676 thp_decoder_select="dsputil hpeldsp"
1677 truehd_decoder_select="mlp_decoder"
1678 truemotion2_decoder_select="dsputil"
1679 truespeech_decoder_select="dsputil"
1680 tscc_decoder_deps="zlib"
1681 twinvq_decoder_select="mdct lsp sinewin"
1682 utvideo_decoder_select="dsputil"
1683 utvideo_encoder_select="dsputil huffman"
1684 vble_decoder_select="dsputil"
1685 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1686 vc1image_decoder_select="vc1_decoder"
1687 vorbis_decoder_select="mdct"
1688 vorbis_encoder_select="mdct"
1689 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1690 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1691 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1692 vp6a_decoder_select="vp6_decoder"
1693 vp6f_decoder_select="vp6_decoder"
1694 vp8_decoder_select="h264pred videodsp"
1695 webp_decoder_select="vp8_decoder"
1696 wmapro_decoder_select="mdct sinewin"
1697 wmav1_decoder_select="mdct sinewin"
1698 wmav1_encoder_select="mdct sinewin"
1699 wmav2_decoder_select="mdct sinewin"
1700 wmav2_encoder_select="mdct sinewin"
1701 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1702 wmv1_decoder_select="h263_decoder"
1703 wmv1_encoder_select="h263_encoder"
1704 wmv2_decoder_select="h263_decoder videodsp"
1705 wmv2_encoder_select="h263_encoder"
1706 wmv3_decoder_select="vc1_decoder"
1707 wmv3image_decoder_select="wmv3_decoder"
1708 zerocodec_decoder_deps="zlib"
1709 zlib_decoder_deps="zlib"
1710 zlib_encoder_deps="zlib"
1711 zmbv_decoder_deps="zlib"
1712 zmbv_encoder_deps="zlib"
1713
1714 # hardware accelerators
1715 dxva2_deps="dxva2api_h"
1716 vaapi_deps="va_va_h"
1717 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1718 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1719 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1720
1721 h263_vaapi_hwaccel_deps="vaapi"
1722 h263_vaapi_hwaccel_select="h263_decoder"
1723 h263_vdpau_hwaccel_deps="vdpau"
1724 h263_vdpau_hwaccel_select="h263_decoder"
1725 h264_dxva2_hwaccel_deps="dxva2"
1726 h264_dxva2_hwaccel_select="h264_decoder"
1727 h264_vaapi_hwaccel_deps="vaapi"
1728 h264_vaapi_hwaccel_select="h264_decoder"
1729 h264_vda_hwaccel_deps="vda"
1730 h264_vda_hwaccel_select="h264_decoder"
1731 h264_vdpau_hwaccel_deps="vdpau"
1732 h264_vdpau_hwaccel_select="h264_decoder"
1733 mpeg1_vdpau_hwaccel_deps="vdpau"
1734 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1735 mpeg2_dxva2_hwaccel_deps="dxva2"
1736 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1737 mpeg2_vaapi_hwaccel_deps="vaapi"
1738 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1739 mpeg2_vdpau_hwaccel_deps="vdpau"
1740 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1741 mpeg4_vaapi_hwaccel_deps="vaapi"
1742 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1743 mpeg4_vdpau_hwaccel_deps="vdpau"
1744 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1745 vc1_dxva2_hwaccel_deps="dxva2"
1746 vc1_dxva2_hwaccel_select="vc1_decoder"
1747 vc1_vaapi_hwaccel_deps="vaapi"
1748 vc1_vaapi_hwaccel_select="vc1_decoder"
1749 vc1_vdpau_hwaccel_deps="vdpau"
1750 vc1_vdpau_hwaccel_select="vc1_decoder"
1751 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1752 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1753 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1754
1755 # parsers
1756 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1757 mpeg4video_parser_select="error_resilience mpegvideo"
1758 mpegvideo_parser_select="error_resilience mpegvideo"
1759 vc1_parser_select="mpegvideo"
1760
1761 # external libraries
1762 libfaac_encoder_deps="libfaac"
1763 libfaac_encoder_select="audio_frame_queue"
1764 libfdk_aac_decoder_deps="libfdk_aac"
1765 libfdk_aac_encoder_deps="libfdk_aac"
1766 libfdk_aac_encoder_select="audio_frame_queue"
1767 libgsm_decoder_deps="libgsm"
1768 libgsm_encoder_deps="libgsm"
1769 libgsm_ms_decoder_deps="libgsm"
1770 libgsm_ms_encoder_deps="libgsm"
1771 libilbc_decoder_deps="libilbc"
1772 libilbc_encoder_deps="libilbc"
1773 libmp3lame_encoder_deps="libmp3lame"
1774 libmp3lame_encoder_select="audio_frame_queue"
1775 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1776 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1777 libopencore_amrnb_encoder_select="audio_frame_queue"
1778 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1779 libopenjpeg_decoder_deps="libopenjpeg"
1780 libopenjpeg_encoder_deps="libopenjpeg"
1781 libopus_decoder_deps="libopus"
1782 libopus_encoder_deps="libopus"
1783 libopus_encoder_select="audio_frame_queue"
1784 libschroedinger_decoder_deps="libschroedinger"
1785 libschroedinger_encoder_deps="libschroedinger"
1786 libspeex_decoder_deps="libspeex"
1787 libspeex_encoder_deps="libspeex"
1788 libspeex_encoder_select="audio_frame_queue"
1789 libtheora_encoder_deps="libtheora"
1790 libvo_aacenc_encoder_deps="libvo_aacenc"
1791 libvo_aacenc_encoder_select="audio_frame_queue"
1792 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1793 libvorbis_encoder_deps="libvorbis"
1794 libvorbis_encoder_select="audio_frame_queue"
1795 libvpx_vp8_decoder_deps="libvpx"
1796 libvpx_vp8_encoder_deps="libvpx"
1797 libvpx_vp9_decoder_deps="libvpx"
1798 libvpx_vp9_encoder_deps="libvpx"
1799 libwavpack_encoder_deps="libwavpack"
1800 libx264_encoder_deps="libx264"
1801 libxavs_encoder_deps="libxavs"
1802 libxvid_encoder_deps="libxvid"
1803
1804 # demuxers / muxers
1805 ac3_demuxer_select="ac3_parser"
1806 asf_demuxer_select="riffdec"
1807 asf_muxer_select="riffenc"
1808 asf_stream_muxer_select="asf_muxer"
1809 avi_demuxer_select="riffdec"
1810 avi_muxer_select="riffenc"
1811 avisynth_demuxer_deps="avisynth"
1812 avisynth_demuxer_select="riffdec"
1813 caf_demuxer_select="riffdec"
1814 dirac_demuxer_select="dirac_parser"
1815 dxa_demuxer_select="riffdec"
1816 eac3_demuxer_select="ac3_parser"
1817 flac_demuxer_select="flac_parser"
1818 hls_muxer_select="mpegts_muxer"
1819 ipod_muxer_select="mov_muxer"
1820 ismv_muxer_select="mov_muxer"
1821 matroska_audio_muxer_select="matroska_muxer"
1822 matroska_demuxer_select="riffdec"
1823 matroska_demuxer_suggest="bzlib lzo zlib"
1824 matroska_muxer_select="riffenc"
1825 mmf_muxer_select="riffenc"
1826 mov_demuxer_select="riffdec"
1827 mov_demuxer_suggest="zlib"
1828 mov_muxer_select="riffenc rtpenc_chain"
1829 mp3_demuxer_select="mpegaudio_parser"
1830 mp4_muxer_select="mov_muxer"
1831 mpegts_muxer_select="adts_muxer latm_muxer"
1832 mpegtsraw_demuxer_select="mpegts_demuxer"
1833 mxf_d10_muxer_select="mxf_muxer"
1834 nut_muxer_select="riffenc"
1835 nuv_demuxer_select="riffdec"
1836 ogg_demuxer_select="golomb"
1837 psp_muxer_select="mov_muxer"
1838 rtp_demuxer_select="sdp_demuxer"
1839 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1840 rtsp_demuxer_select="http_protocol rtpdec"
1841 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1842 sap_demuxer_select="sdp_demuxer"
1843 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1844 sdp_demuxer_select="rtpdec"
1845 smoothstreaming_muxer_select="ismv_muxer"
1846 spdif_muxer_select="aac_parser"
1847 tak_demuxer_select="tak_parser"
1848 tg2_muxer_select="mov_muxer"
1849 tgp_muxer_select="mov_muxer"
1850 w64_demuxer_select="wav_demuxer"
1851 wav_demuxer_select="riffdec"
1852 wav_muxer_select="riffenc"
1853 webm_muxer_select="riffenc"
1854 wtv_demuxer_select="riffdec"
1855 xmv_demuxer_select="riffdec"
1856 xwma_demuxer_select="riffdec"
1857
1858 # indevs / outdevs
1859 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1860 alsa_outdev_deps="alsa_asoundlib_h"
1861 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1862 dv1394_indev_deps="dv1394"
1863 dv1394_indev_select="dv_demuxer"
1864 fbdev_indev_deps="linux_fb_h"
1865 jack_indev_deps="jack_jack_h pthreads"
1866 libcdio_indev_deps="libcdio"
1867 libdc1394_indev_deps="libdc1394"
1868 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1869 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1870 pulse_indev_deps="libpulse"
1871 sndio_indev_deps="sndio_h"
1872 sndio_outdev_deps="sndio_h"
1873 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1874 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1875 vfwcap_indev_extralibs="-lavicap32"
1876 x11grab_indev_deps="x11grab XShmCreateImage"
1877
1878 # protocols
1879 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1880 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1881 ffrtmpcrypt_protocol_select="tcp_protocol"
1882 ffrtmphttp_protocol_deps="!librtmp_protocol"
1883 ffrtmphttp_protocol_select="http_protocol"
1884 gopher_protocol_select="network"
1885 httpproxy_protocol_select="tcp_protocol"
1886 http_protocol_select="tcp_protocol"
1887 https_protocol_select="tls_protocol"
1888 librtmp_protocol_deps="librtmp"
1889 librtmpe_protocol_deps="librtmp"
1890 librtmps_protocol_deps="librtmp"
1891 librtmpt_protocol_deps="librtmp"
1892 librtmpte_protocol_deps="librtmp"
1893 mmsh_protocol_select="http_protocol"
1894 mmst_protocol_select="network"
1895 rtmp_protocol_deps="!librtmp_protocol"
1896 rtmp_protocol_select="tcp_protocol"
1897 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1898 rtmps_protocol_deps="!librtmp_protocol"
1899 rtmps_protocol_select="tls_protocol"
1900 rtmpt_protocol_select="ffrtmphttp_protocol"
1901 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1902 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1903 rtp_protocol_select="udp_protocol"
1904 sctp_protocol_deps="struct_sctp_event_subscribe"
1905 sctp_protocol_select="network"
1906 srtp_protocol_select="rtp_protocol"
1907 tcp_protocol_select="network"
1908 tls_protocol_deps_any="openssl gnutls"
1909 tls_protocol_select="tcp_protocol"
1910 udp_protocol_select="network"
1911 unix_protocol_deps="sys_un_h"
1912 unix_protocol_select="network"
1913
1914 # filters
1915 blackframe_filter_deps="gpl"
1916 boxblur_filter_deps="gpl"
1917 cropdetect_filter_deps="gpl"
1918 delogo_filter_deps="gpl"
1919 drawtext_filter_deps="libfreetype"
1920 frei0r_filter_deps="frei0r dlopen strtok_r"
1921 frei0r_filter_extralibs='$ldl'
1922 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1923 frei0r_src_filter_extralibs='$ldl'
1924 hqdn3d_filter_deps="gpl"
1925 interlace_filter_deps="gpl"
1926 resample_filter_deps="avresample"
1927 ocv_filter_deps="libopencv"
1928 scale_filter_deps="swscale"
1929 yadif_filter_deps="gpl"
1930
1931 # libraries
1932 avcodec_deps="avutil"
1933 avdevice_deps="avutil avcodec avformat"
1934 avfilter_deps="avutil"
1935 avformat_deps="avutil avcodec"
1936 avresample_deps="avutil"
1937 swscale_deps="avutil"
1938
1939 # programs
1940 avconv_deps="avcodec avfilter avformat avresample swscale"
1941 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
1942                fps_filter null_filter resample_filter scale_filter
1943                setpts_filter trim_filter"
1944 avplay_deps="avcodec avformat avresample swscale sdl"
1945 avplay_select="rdft"
1946 avprobe_deps="avcodec avformat"
1947 avserver_deps="avformat fork !shared"
1948 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
1949 avserver_extralibs='$ldl'
1950
1951 doc_deps="texi2html"
1952
1953 # default parameters
1954
1955 logfile="config.log"
1956
1957 # installation paths
1958 prefix_default="/usr/local"
1959 bindir_default='${prefix}/bin'
1960 datadir_default='${prefix}/share/avconv'
1961 docdir_default='${prefix}/share/doc/libav'
1962 incdir_default='${prefix}/include'
1963 libdir_default='${prefix}/lib'
1964 mandir_default='${prefix}/share/man'
1965 shlibdir_default="$libdir_default"
1966
1967 # toolchain
1968 ar_default="ar"
1969 cc_default="gcc"
1970 host_cc_default="gcc"
1971 cp_f="cp -f"
1972 ln_s="ln -s -f"
1973 nm_default="nm -g"
1974 objformat="elf"
1975 pkg_config_default=pkg-config
1976 ranlib="ranlib"
1977 strip="strip"
1978 yasmexe="yasm"
1979
1980 nogas=":"
1981
1982 # machine
1983 arch_default=$(uname -m)
1984 cpu="generic"
1985
1986 # OS
1987 target_os_default=$(tolower $(uname -s))
1988 host_os=$target_os_default
1989
1990 # configurable options
1991 enable $LIBRARY_LIST $PROGRAM_LIST
1992
1993 enable asm
1994 enable debug
1995 enable doc
1996 enable optimizations
1997 enable safe_bitstream_reader
1998 enable static
1999 enable swscale_alpha
2000
2001 # By default, enable only those hwaccels that have no external dependencies.
2002 enable dxva2 vdpau
2003
2004 # build settings
2005 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2006 LIBPREF="lib"
2007 LIBSUF=".a"
2008 FULLNAME='$(NAME)$(BUILDSUF)'
2009 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2010 SLIBPREF="lib"
2011 SLIBSUF=".so"
2012 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2013 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2014 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2015 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2016 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2017 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2018
2019 asflags_filter=echo
2020 cflags_filter=echo
2021 ldflags_filter=echo
2022
2023 AS_C='-c'
2024 AS_O='-o $@'
2025 CC_C='-c'
2026 CC_E='-E -o $@'
2027 CC_O='-o $@'
2028 LD_O='-o $@'
2029 LD_LIB='-l%'
2030 LD_PATH='-L'
2031 HOSTCC_C='-c'
2032 HOSTCC_O='-o $@'
2033 HOSTLD_O='-o $@'
2034
2035 host_cflags='-O3 -g'
2036 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2037 host_libs='-lm'
2038 host_cflags_filter=echo
2039 host_ldflags_filter=echo
2040
2041 target_path='$(CURDIR)'
2042
2043 # since the object filename is not given with the -MM flag, the compiler
2044 # is only able to print the basename, and we must add the path ourselves
2045 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2046 DEPFLAGS='-MM'
2047
2048 # find source path
2049 if test -f configure; then
2050     source_path=.
2051 else
2052     source_path=$(cd $(dirname "$0"); pwd)
2053     echo "$source_path" | grep -q '[[:blank:]]' &&
2054         die "Out of tree builds are impossible with whitespace in source path."
2055     test -e "$source_path/config.h" &&
2056         die "Out of tree builds are impossible with config.h in source dir."
2057 fi
2058
2059 for v in "$@"; do
2060     r=${v#*=}
2061     l=${v%"$r"}
2062     r=$(sh_quote "$r")
2063     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2064 done
2065
2066 find_things(){
2067     thing=$1
2068     pattern=$2
2069     file=$source_path/$3
2070     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2071 }
2072
2073 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2074 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2075 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2076 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2077 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2078 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2079 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2080 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2081 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2082 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2083 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2084
2085 ALL_COMPONENTS="
2086     $BSF_LIST
2087     $DECODER_LIST
2088     $DEMUXER_LIST
2089     $ENCODER_LIST
2090     $FILTER_LIST
2091     $HWACCEL_LIST
2092     $INDEV_LIST
2093     $MUXER_LIST
2094     $OUTDEV_LIST
2095     $PARSER_LIST
2096     $PROTOCOL_LIST
2097 "
2098
2099 for n in $COMPONENT_LIST; do
2100     v=$(toupper ${n%s})_LIST
2101     eval enable \$$v
2102     eval ${n}_if_any="\$$v"
2103 done
2104
2105 enable $ARCH_EXT_LIST
2106
2107 die_unknown(){
2108     echo "Unknown option \"$1\"."
2109     echo "See $0 --help for available options."
2110     exit 1
2111 }
2112
2113 print_3_columns() {
2114     cat | tr ' ' '\n' | sort | pr -r -3 -t
2115 }
2116
2117 show_list() {
2118     suffix=_$1
2119     shift
2120     echo $* | sed s/$suffix//g | print_3_columns
2121     exit 0
2122 }
2123
2124 rand_list(){
2125     IFS=', '
2126     set -- $*
2127     unset IFS
2128     for thing; do
2129         comp=${thing%:*}
2130         prob=${thing#$comp}
2131         prob=${prob#:}
2132         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2133         echo "prob ${prob:-0.5}"
2134         printf '%s\n' $comp
2135     done
2136 }
2137
2138 do_random(){
2139     action=$1
2140     shift
2141     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2142     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2143 }
2144
2145 for opt do
2146     optval="${opt#*=}"
2147     case "$opt" in
2148         --extra-ldflags=*)
2149             add_ldflags $optval
2150         ;;
2151         --extra-libs=*)
2152             add_extralibs $optval
2153         ;;
2154         --disable-devices)
2155             disable $INDEV_LIST $OUTDEV_LIST
2156         ;;
2157         --enable-debug=*)
2158             debuglevel="$optval"
2159         ;;
2160         --disable-programs)
2161             disable $PROGRAM_LIST
2162         ;;
2163         --disable-everything)
2164             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2165         ;;
2166         --disable-all)
2167             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2168             disable $LIBRARY_LIST $PROGRAM_LIST doc
2169         ;;
2170         --enable-random|--disable-random)
2171             action=${opt%%-random}
2172             do_random ${action#--} $COMPONENT_LIST
2173         ;;
2174         --enable-random=*|--disable-random=*)
2175             action=${opt%%-random=*}
2176             do_random ${action#--} $optval
2177         ;;
2178         --enable-*=*|--disable-*=*)
2179             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2180             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2181             eval list=\$$(toupper $thing)_LIST
2182             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2183             $action $(filter "$name" $list)
2184         ;;
2185         --enable-?*|--disable-?*)
2186             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2187             if is_in $option $COMPONENT_LIST; then
2188                 test $action = disable && action=unset
2189                 eval $action \$$(toupper ${option%s})_LIST
2190             elif is_in $option $CMDLINE_SELECT; then
2191                 $action $option
2192             else
2193                 die_unknown $opt
2194             fi
2195         ;;
2196         --list-*)
2197             NAME="${opt#--list-}"
2198             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2199             NAME=${NAME%s}
2200             eval show_list $NAME \$$(toupper $NAME)_LIST
2201         ;;
2202         --help|-h) show_help
2203         ;;
2204         *)
2205             optname="${opt%%=*}"
2206             optname="${optname#--}"
2207             optname=$(echo "$optname" | sed 's/-/_/g')
2208             if is_in $optname $CMDLINE_SET; then
2209                 eval $optname='$optval'
2210             elif is_in $optname $CMDLINE_APPEND; then
2211                 append $optname "$optval"
2212             else
2213                 die_unknown $opt
2214             fi
2215         ;;
2216     esac
2217 done
2218
2219 disabled logging && logfile=/dev/null
2220
2221 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2222 set >> $logfile
2223
2224 test -n "$cross_prefix" && enable cross_compile
2225
2226 if enabled cross_compile; then
2227     test -n "$arch" && test -n "$target_os" ||
2228         die "Must specify target arch and OS when cross-compiling"
2229 fi
2230
2231 ar_default="${cross_prefix}${ar_default}"
2232 cc_default="${cross_prefix}${cc_default}"
2233 nm_default="${cross_prefix}${nm_default}"
2234 pkg_config_default="${cross_prefix}${pkg_config_default}"
2235 ranlib="${cross_prefix}${ranlib}"
2236 strip="${cross_prefix}${strip}"
2237
2238 sysinclude_default="${sysroot}/usr/include"
2239
2240 case "$toolchain" in
2241     clang-asan)
2242         cc_default="clang"
2243         add_cflags  -fsanitize=address
2244         add_ldflags -fsanitize=address
2245     ;;
2246     clang-tsan)
2247         cc_default="clang"
2248         add_cflags  -fsanitize=thread -pie
2249         add_ldflags -fsanitize=thread -pie
2250     ;;
2251     gcc-asan)
2252         cc_default="gcc"
2253         add_cflags  -fsanitize=address
2254         add_ldflags -fsanitize=address
2255     ;;
2256     gcc-tsan)
2257         cc_default="gcc"
2258         add_cflags  -fsanitize=thread -pie -fPIC
2259         add_ldflags -fsanitize=thread -pie -fPIC
2260     ;;
2261     valgrind-massif)
2262         target_exec_default="valgrind"
2263         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2264     ;;
2265     valgrind-memcheck)
2266         target_exec_default="valgrind"
2267         target_exec_args="--track-origins=yes --leak-check=full"
2268     ;;
2269     msvc)
2270         cc_default="c99wrap cl"
2271         ld_default="c99wrap link"
2272         nm_default="dumpbin -symbols"
2273         ar_default="lib"
2274         target_os_default="win32"
2275     ;;
2276     icl)
2277         cc_default="c99wrap -noconv icl"
2278         ld_default="c99wrap xilink"
2279         nm_default="dumpbin -symbols"
2280         ar_default="xilib"
2281         target_os_default="win32"
2282     ;;
2283     gcov)
2284         add_cflags  -fprofile-arcs -ftest-coverage
2285         add_ldflags -fprofile-arcs -ftest-coverage
2286     ;;
2287     ?*)
2288         die "Unknown toolchain $toolchain"
2289     ;;
2290 esac
2291
2292 set_default arch cc pkg_config sysinclude target_exec target_os
2293 enabled cross_compile || host_cc_default=$cc
2294 set_default host_cc
2295
2296 if ! $pkg_config --version >/dev/null 2>&1; then
2297     warn "$pkg_config not found, library detection may fail."
2298     pkg_config=false
2299 fi
2300
2301 exesuf() {
2302     case $1 in
2303         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2304     esac
2305 }
2306
2307 EXESUF=$(exesuf $target_os)
2308 HOSTEXESUF=$(exesuf $host_os)
2309
2310 # set temporary file name
2311 : ${TMPDIR:=$TEMPDIR}
2312 : ${TMPDIR:=$TMP}
2313 : ${TMPDIR:=/tmp}
2314
2315 if ! check_cmd mktemp -u XXXXXX; then
2316     # simple replacement for missing mktemp
2317     # NOT SAFE FOR GENERAL USE
2318     mktemp(){
2319         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2320     }
2321 fi
2322
2323 tmpfile(){
2324     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2325         (set -C; exec > $tmp) 2>/dev/null ||
2326         die "Unable to create temporary file in $TMPDIR."
2327     append TMPFILES $tmp
2328     eval $1=$tmp
2329 }
2330
2331 trap 'rm -f -- $TMPFILES' EXIT
2332
2333 tmpfile TMPASM .asm
2334 tmpfile TMPC   .c
2335 tmpfile TMPE   $EXESUF
2336 tmpfile TMPH   .h
2337 tmpfile TMPO   .o
2338 tmpfile TMPS   .S
2339 tmpfile TMPSH  .sh
2340 tmpfile TMPV   .ver
2341
2342 unset -f mktemp
2343
2344 chmod +x $TMPE
2345
2346 # make sure we can execute files in $TMPDIR
2347 cat > $TMPSH 2>> $logfile <<EOF
2348 #! /bin/sh
2349 EOF
2350 chmod +x $TMPSH >> $logfile 2>&1
2351 if ! $TMPSH >> $logfile 2>&1; then
2352     cat <<EOF
2353 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2354 variable to another directory and make sure that it is not mounted noexec.
2355 EOF
2356     die "Sanity test failed."
2357 fi
2358
2359 ccc_flags(){
2360     for flag; do
2361         case $flag in
2362             -std=c99)           echo -c99                       ;;
2363             -mcpu=*)            echo -arch ${flag#*=}           ;;
2364             -mieee)             echo -ieee                      ;;
2365             -O*|-fast)          echo $flag                      ;;
2366             -fno-math-errno)    echo -assume nomath_errno       ;;
2367             -g)                 echo -g3                        ;;
2368             -Wall)              echo -msg_enable level2         ;;
2369             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2370             -Wl,*)              echo $flag                      ;;
2371             -f*|-W*)                                            ;;
2372             *)                  echo $flag                      ;;
2373         esac
2374    done
2375 }
2376
2377 cparser_flags(){
2378     for flag; do
2379         case $flag in
2380             -Wno-switch)             echo -Wno-switch-enum ;;
2381             -Wno-format-zero-length) ;;
2382             -Wdisabled-optimization) ;;
2383             -Wno-pointer-sign)       echo -Wno-other ;;
2384             *)                       echo $flag ;;
2385         esac
2386     done
2387 }
2388
2389 msvc_common_flags(){
2390     for flag; do
2391         case $flag in
2392             # In addition to specifying certain flags under the compiler
2393             # specific filters, they must be specified here as well or else the
2394             # generic catch all at the bottom will print the original flag.
2395             -Wall)                ;;
2396             -std=c99)             ;;
2397             # Common flags
2398             -fomit-frame-pointer) ;;
2399             -g)                   echo -Z7 ;;
2400             -fno-math-errno)      ;;
2401             -fno-common)          ;;
2402             -fno-signed-zeros)    ;;
2403             -fPIC)                ;;
2404             -mthumb)              ;;
2405             -march=*)             ;;
2406             -lz)                  echo zlib.lib ;;
2407             -lavifil32)           echo vfw32.lib ;;
2408             -lavicap32)           echo vfw32.lib user32.lib ;;
2409             -l*)                  echo ${flag#-l}.lib ;;
2410             *)                    echo $flag ;;
2411         esac
2412     done
2413 }
2414
2415 msvc_flags(){
2416     msvc_common_flags "$@"
2417     for flag; do
2418         case $flag in
2419             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2420                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2421                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2422                                        -wd4273 ;;
2423         esac
2424     done
2425 }
2426
2427 icl_flags(){
2428     msvc_common_flags "$@"
2429     for flag; do
2430         case $flag in
2431             # Despite what Intel's documentation says -Wall, which is supported
2432             # on Windows, does enable remarks so disable them here.
2433             -Wall)                echo $flag -Qdiag-disable:remark ;;
2434             -std=c99)             echo -Qstd=c99 ;;
2435         esac
2436     done
2437 }
2438
2439 pgi_flags(){
2440     for flag; do
2441         case $flag in
2442             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2443             -fomit-frame-pointer) echo -Mnoframe ;;
2444             -g)                   echo -gopt ;;
2445             *)                    echo $flag ;;
2446         esac
2447     done
2448 }
2449
2450 suncc_flags(){
2451     for flag; do
2452         case $flag in
2453             -march=*|-mcpu=*)
2454                 case "${flag#*=}" in
2455                     native)                   echo -xtarget=native       ;;
2456                     v9|niagara)               echo -xarch=sparc          ;;
2457                     ultrasparc)               echo -xarch=sparcvis       ;;
2458                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2459                     i586|pentium)             echo -xchip=pentium        ;;
2460                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2461                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2462                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2463                     pentium4*)          echo -xtarget=pentium4           ;;
2464                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2465                     *-sse3)             echo -xarch=sse3                 ;;
2466                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2467                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2468                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2469                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2470                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2471                     k8|opteron|athlon64|athlon-fx)
2472                                                echo -xarch=sse2a         ;;
2473                     athlon*)                   echo -xarch=pentium_proa  ;;
2474                 esac
2475                 ;;
2476             -std=c99)             echo -xc99              ;;
2477             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2478             -fPIC)                echo -KPIC -xcode=pic32 ;;
2479             -W*,*)                echo $flag              ;;
2480             -f*-*|-W*|-mimpure-text)                      ;;
2481             -shared)              echo -G                 ;;
2482             *)                    echo $flag              ;;
2483         esac
2484     done
2485 }
2486
2487 tms470_flags(){
2488     for flag; do
2489         case $flag in
2490             -march=*|-mcpu=*)
2491                 case "${flag#*=}" in
2492                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2493                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2494                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2495                     armv6*|arm11*)          echo -mv=6   ;;
2496                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2497                                             echo -mv=5e  ;;
2498                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2499                 esac
2500                 ;;
2501             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2502             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2503             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2504             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2505             -msoft-float)   echo --float_support=vfplib       ;;
2506             -O[0-3]|-mf=*)  echo $flag                        ;;
2507             -g)             echo -g -mn                       ;;
2508             -pds=*)         echo $flag                        ;;
2509             -D*|-I*)        echo $flag                        ;;
2510             --gcc|--abi=*)  echo $flag                        ;;
2511             -me)            echo $flag                        ;;
2512         esac
2513     done
2514 }
2515
2516 probe_cc(){
2517     pfx=$1
2518     _cc=$2
2519
2520     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2521     unset _ld_o _ldflags _ld_lib _ld_path
2522     unset _depflags _DEPCMD _DEPFLAGS
2523     _flags_filter=echo
2524
2525     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2526         _type=llvm_gcc
2527         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2528         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2529         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2530         _cflags_speed='-O3'
2531         _cflags_size='-Os'
2532     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2533         _type=gcc
2534         gcc_version=$($_cc --version | head -n1)
2535         gcc_basever=$($_cc -dumpversion)
2536         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2537         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2538         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2539         if ! $_cc -dumpversion | grep -q '^2\.'; then
2540             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2541         fi
2542         _cflags_speed='-O3'
2543         _cflags_size='-Os'
2544     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2545         _type=icc
2546         _ident=$($_cc --version | head -n1)
2547         _depflags='-MMD'
2548         _cflags_speed='-O3'
2549         _cflags_size='-Os'
2550         _cflags_noopt='-O1'
2551     elif $_cc -v 2>&1 | grep -q xlc; then
2552         _type=xlc
2553         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2554         _cflags_speed='-O5'
2555         _cflags_size='-O5 -qcompact'
2556     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2557         _type=ccc
2558         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2559         _DEPFLAGS='-M'
2560         _cflags_speed='-fast'
2561         _cflags_size='-O1'
2562         _flags_filter=ccc_flags
2563     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2564         test -d "$sysroot" || die "No valid sysroot specified."
2565         _type=armcc
2566         _ident=$($_cc --vsn | head -n1)
2567         armcc_conf="$PWD/armcc.conf"
2568         $_cc --arm_linux_configure                 \
2569              --arm_linux_config_file="$armcc_conf" \
2570              --configure_sysroot="$sysroot"        \
2571              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2572              die "Error creating armcc configuration file."
2573         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2574         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2575         as_default="${cross_prefix}gcc"
2576         _depflags='-MMD'
2577         _cflags_speed='-O3'
2578         _cflags_size='-Os'
2579     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2580         _type=tms470
2581         _ident=$($_cc -version | head -n1 | tr -s ' ')
2582         _flags='--gcc --abi=eabi -me'
2583         _cc_e='-ppl -fe=$@'
2584         _cc_o='-fe=$@'
2585         _depflags='-ppa -ppd=$(@:.o=.d)'
2586         _cflags_speed='-O3 -mf=5'
2587         _cflags_size='-O3 -mf=2'
2588         _flags_filter=tms470_flags
2589     elif $_cc -v 2>&1 | grep -q clang; then
2590         _type=clang
2591         _ident=$($_cc --version | head -n1)
2592         _depflags='-MMD'
2593         _cflags_speed='-O3'
2594         _cflags_size='-Os'
2595     elif $_cc -V 2>&1 | grep -q Sun; then
2596         _type=suncc
2597         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2598         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2599         _DEPFLAGS='-xM1 -xc99'
2600         _ldflags='-std=c99'
2601         _cflags_speed='-O5'
2602         _cflags_size='-O5 -xspace'
2603         _flags_filter=suncc_flags
2604     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2605         _type=pathscale
2606         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2607         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2608         _cflags_speed='-O2'
2609         _cflags_size='-Os'
2610         _flags_filter='filter_out -Wdisabled-optimization'
2611     elif $_cc -v 2>&1 | grep -q Open64; then
2612         _type=open64
2613         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2614         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2615         _cflags_speed='-O2'
2616         _cflags_size='-Os'
2617         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2618     elif $_cc -V 2>&1 | grep -q Portland; then
2619         _type=pgi
2620         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2621         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2622         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2623         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2624         _cflags_noopt="-O1"
2625         _flags_filter=pgi_flags
2626     elif $_cc 2>&1 | grep -q Microsoft; then
2627         _type=msvc
2628         _ident=$($cc 2>&1 | head -n1)
2629         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2630         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2631         _cflags_speed="-O2"
2632         _cflags_size="-O1"
2633         # Nonstandard output options, to avoid msys path conversion issues.
2634         # Relies on wrapper to remap it.
2635         if $_cc 2>&1 | grep -q Linker; then
2636             _ld_o='-out $@'
2637         else
2638             _ld_o='-Fe$@'
2639         fi
2640         _cc_o='-Fo $@'
2641         _cc_e='-P -Fi $@'
2642         _flags_filter=msvc_flags
2643         _ld_lib='lib%.a'
2644         _ld_path='-libpath:'
2645         _flags='-nologo'
2646         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2647         if [ $pfx = hostcc ]; then
2648             append _cflags -Dsnprintf=_snprintf
2649         fi
2650     elif $_cc 2>&1 | grep -q Intel; then
2651         _type=icl
2652         _ident=$($cc 2>&1 | head -n1)
2653         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2654         # Not only is O3 broken on 13.x+ but it is slower on all previous
2655         # versions (tested) as well.
2656         _cflags_speed="-O2"
2657         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2658         # Nonstandard output options, to avoid msys path conversion issues.
2659         # Relies on wrapper to remap it.
2660         if $_cc 2>&1 | grep -q Linker; then
2661             _ld_o='-out $@'
2662         else
2663             _ld_o='-Fe$@'
2664         fi
2665         _cc_o='-Fo $@'
2666         _cc_e='-P'
2667         _flags_filter=icl_flags
2668         _ld_lib='lib%.a'
2669         _ld_path='-libpath:'
2670         # -Qdiag-error to make icl error when seeing certain unknown arguments
2671         _flags='-nologo -Qdiag-error:4044,10157'
2672         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2673         # with MSVC which enables it by default.
2674         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2675         if [ $pfx = hostcc ]; then
2676             append _cflags -Dsnprintf=_snprintf
2677         fi
2678     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2679         _type=cparser
2680         _ident=$($_cc --version | head -n1)
2681         _depflags='-MMD'
2682         _cflags_speed='-O4'
2683         _cflags_size='-O2'
2684         _flags_filter=cparser_flags
2685     fi
2686
2687     eval ${pfx}_type=\$_type
2688     eval ${pfx}_ident=\$_ident
2689 }
2690
2691 set_ccvars(){
2692     eval ${1}_C=\${_cc_c-\${${1}_C}}
2693     eval ${1}_E=\${_cc_e-\${${1}_E}}
2694     eval ${1}_O=\${_cc_o-\${${1}_O}}
2695
2696     if [ -n "$_depflags" ]; then
2697         eval ${1}_DEPFLAGS=\$_depflags
2698     else
2699         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2700         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2701         eval DEP${1}FLAGS=\$_flags
2702     fi
2703 }
2704
2705 probe_cc cc "$cc"
2706 cflags_filter=$_flags_filter
2707 cflags_speed=$_cflags_speed
2708 cflags_size=$_cflags_size
2709 cflags_noopt=$_cflags_noopt
2710 add_cflags $_flags $_cflags
2711 cc_ldflags=$_ldflags
2712 set_ccvars CC
2713
2714 probe_cc hostcc "$host_cc"
2715 host_cflags_filter=$_flags_filter
2716 add_host_cflags  $_flags $_cflags
2717 set_ccvars HOSTCC
2718
2719 test -n "$cc_type" && enable $cc_type ||
2720     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2721
2722 : ${as_default:=$cc}
2723 : ${dep_cc_default:=$cc}
2724 : ${ld_default:=$cc}
2725 : ${host_ld_default:=$host_cc}
2726 set_default ar as dep_cc ld host_ld
2727
2728 probe_cc as "$as"
2729 asflags_filter=$_flags_filter
2730 add_asflags $_flags $_cflags
2731 set_ccvars AS
2732
2733 probe_cc ld "$ld"
2734 ldflags_filter=$_flags_filter
2735 add_ldflags $_flags $_ldflags
2736 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2737 LD_O=${_ld_o-$LD_O}
2738 LD_LIB=${_ld_lib-$LD_LIB}
2739 LD_PATH=${_ld_path-$LD_PATH}
2740
2741 probe_cc hostld "$host_ld"
2742 host_ldflags_filter=$_flags_filter
2743 add_host_ldflags $_flags $_ldflags
2744 HOSTLD_O=${_ld_o-$HOSTLD_O}
2745
2746 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2747     probe_cc depcc "$dep_cc"
2748     CCDEP=${_DEPCMD:-$DEPCMD}
2749     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2750     DEPCCFLAGS=$_flags
2751 fi
2752
2753 if $ar 2>&1 | grep -q Microsoft; then
2754     arflags="-nologo"
2755     ar_o='-out:$@'
2756 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2757     arflags="rq"
2758     ar_o='$@'
2759 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2760     arflags='-Xany -r -c'
2761     ar_o='$@'
2762 else
2763     arflags="rc"
2764     ar_o='$@'
2765 fi
2766
2767 add_cflags $extra_cflags
2768 add_asflags $extra_cflags
2769
2770 if test -n "$sysroot"; then
2771     case "$cc_type" in
2772         gcc|llvm_gcc|clang)
2773             add_cppflags --sysroot="$sysroot"
2774             add_ldflags --sysroot="$sysroot"
2775         ;;
2776         tms470)
2777             add_cppflags -I"$sysinclude"
2778             add_ldflags  --sysroot="$sysroot"
2779         ;;
2780     esac
2781 fi
2782
2783 if test "$cpu" = host; then
2784     enabled cross_compile &&
2785         die "--cpu=host makes no sense when cross-compiling."
2786
2787     case "$cc_type" in
2788         gcc|llvm_gcc)
2789             check_native(){
2790                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2791                 sed -n "/cc1.*$1=/{
2792                             s/.*$1=\\([^ ]*\\).*/\\1/
2793                             p
2794                             q
2795                         }" $TMPE
2796             }
2797             cpu=$(check_native -march || check_native -mcpu)
2798         ;;
2799     esac
2800
2801     test "${cpu:-host}" = host &&
2802         die "--cpu=host not supported with compiler $cc"
2803 fi
2804
2805 # Deal with common $arch aliases
2806 case "$arch" in
2807     aarch64|arm64)
2808         arch="aarch64"
2809     ;;
2810     arm*)
2811         arch="arm"
2812     ;;
2813     mips*|IP*)
2814         arch="mips"
2815     ;;
2816     parisc*|hppa*)
2817         arch="parisc"
2818     ;;
2819     "Power Macintosh"|ppc*|powerpc*)
2820         arch="ppc"
2821     ;;
2822     s390|s390x)
2823         arch="s390"
2824     ;;
2825     sh4|sh)
2826         arch="sh4"
2827     ;;
2828     sun4u|sparc*)
2829         arch="sparc"
2830     ;;
2831     tilegx|tile-gx)
2832         arch="tilegx"
2833     ;;
2834     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2835         arch="x86"
2836     ;;
2837 esac
2838
2839 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2840 enable $arch
2841
2842 # Add processor-specific flags
2843 if enabled aarch64; then
2844
2845     case $cpu in
2846         armv*)
2847             cpuflags="-march=$cpu"
2848         ;;
2849         *)
2850             cpuflags="-mcpu=$cpu"
2851         ;;
2852     esac
2853
2854 elif enabled alpha; then
2855
2856     cpuflags="-mcpu=$cpu"
2857
2858 elif enabled arm; then
2859
2860     check_arm_arch() {
2861         check_cpp_condition stddef.h \
2862             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2863             $cpuflags
2864     }
2865
2866     probe_arm_arch() {
2867         if   check_arm_arch 4;        then echo armv4;
2868         elif check_arm_arch 4T;       then echo armv4t;
2869         elif check_arm_arch 5;        then echo armv5;
2870         elif check_arm_arch 5E;       then echo armv5e;
2871         elif check_arm_arch 5T;       then echo armv5t;
2872         elif check_arm_arch 5TE;      then echo armv5te;
2873         elif check_arm_arch 5TEJ;     then echo armv5te;
2874         elif check_arm_arch 6;        then echo armv6;
2875         elif check_arm_arch 6J;       then echo armv6j;
2876         elif check_arm_arch 6K;       then echo armv6k;
2877         elif check_arm_arch 6Z;       then echo armv6z;
2878         elif check_arm_arch 6ZK;      then echo armv6zk;
2879         elif check_arm_arch 6T2;      then echo armv6t2;
2880         elif check_arm_arch 7;        then echo armv7;
2881         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2882         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2883         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2884         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2885         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2886         fi
2887     }
2888
2889     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2890
2891     case $cpu in
2892         armv*)
2893             cpuflags="-march=$cpu"
2894             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2895         ;;
2896         *)
2897             cpuflags="-mcpu=$cpu"
2898             case $cpu in
2899                 cortex-a*)                               subarch=armv7a  ;;
2900                 cortex-r*)                               subarch=armv7r  ;;
2901                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2902                 arm11*)                                  subarch=armv6   ;;
2903                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2904                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2905                 *)                             subarch=$(probe_arm_arch) ;;
2906             esac
2907         ;;
2908     esac
2909
2910     case "$subarch" in
2911         armv5t*)    enable fast_clz                ;;
2912         armv[6-8]*) enable fast_clz fast_unaligned ;;
2913     esac
2914
2915 elif enabled avr32; then
2916
2917     case $cpu in
2918         ap7[02]0[0-2])
2919             subarch="avr32_ap"
2920             cpuflags="-mpart=$cpu"
2921         ;;
2922         ap)
2923             subarch="avr32_ap"
2924             cpuflags="-march=$cpu"
2925         ;;
2926         uc3[ab]*)
2927             subarch="avr32_uc"
2928             cpuflags="-mcpu=$cpu"
2929         ;;
2930         uc)
2931             subarch="avr32_uc"
2932             cpuflags="-march=$cpu"
2933         ;;
2934     esac
2935
2936 elif enabled bfin; then
2937
2938     cpuflags="-mcpu=$cpu"
2939
2940 elif enabled mips; then
2941
2942     cpuflags="-march=$cpu"
2943
2944 elif enabled ppc; then
2945
2946     case $(tolower $cpu) in
2947         601|ppc601|powerpc601)
2948             cpuflags="-mcpu=601"
2949             disable altivec
2950         ;;
2951         603*|ppc603*|powerpc603*)
2952             cpuflags="-mcpu=603"
2953             disable altivec
2954         ;;
2955         604*|ppc604*|powerpc604*)
2956             cpuflags="-mcpu=604"
2957             disable altivec
2958         ;;
2959         g3|75*|ppc75*|powerpc75*)
2960             cpuflags="-mcpu=750"
2961             disable altivec
2962         ;;
2963         g4|745*|ppc745*|powerpc745*)
2964             cpuflags="-mcpu=7450"
2965         ;;
2966         74*|ppc74*|powerpc74*)
2967             cpuflags="-mcpu=7400"
2968         ;;
2969         g5|970|ppc970|powerpc970)
2970             cpuflags="-mcpu=970"
2971         ;;
2972         power[3-7]*)
2973             cpuflags="-mcpu=$cpu"
2974         ;;
2975         cell)
2976             cpuflags="-mcpu=cell"
2977             enable ldbrx
2978         ;;
2979         e500mc)
2980             cpuflags="-mcpu=e500mc"
2981             disable altivec
2982         ;;
2983         e500v2)
2984             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2985             disable altivec
2986         ;;
2987         e500)
2988             cpuflags="-mcpu=8540 -mhard-float"
2989             disable altivec
2990         ;;
2991     esac
2992
2993 elif enabled sparc; then
2994
2995     case $cpu in
2996         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
2997             cpuflags="-mcpu=$cpu"
2998             disable vis
2999         ;;
3000         ultrasparc*|niagara[234])
3001             cpuflags="-mcpu=$cpu"
3002         ;;
3003     esac
3004
3005 elif enabled x86; then
3006
3007     case $cpu in
3008         i[345]86|pentium)
3009             cpuflags="-march=$cpu"
3010             disable mmx
3011         ;;
3012         # targets that do NOT support nopl and conditional mov (cmov)
3013         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3014             cpuflags="-march=$cpu"
3015             disable i686
3016         ;;
3017         # targets that do support nopl and conditional mov (cmov)
3018         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3019             cpuflags="-march=$cpu"
3020             enable i686
3021             enable fast_cmov
3022         ;;
3023         # targets that do support conditional mov but on which it's slow
3024         pentium4|pentium4m|prescott|nocona)
3025             cpuflags="-march=$cpu"
3026             enable i686
3027             disable fast_cmov
3028         ;;
3029     esac
3030
3031 fi
3032
3033 if [ "$cpu" != generic ]; then
3034     add_cflags  $cpuflags
3035     add_asflags $cpuflags
3036 fi
3037
3038 # compiler sanity check
3039 check_exec <<EOF
3040 int main(void){ return 0; }
3041 EOF
3042 if test "$?" != 0; then
3043     echo "$cc is unable to create an executable file."
3044     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3045         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3046         echo "Only do this if you know what cross compiling means."
3047     fi
3048     die "C compiler test failed."
3049 fi
3050
3051 add_cppflags -D_ISOC99_SOURCE
3052 check_cflags -std=c99
3053 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3054 #include <stdlib.h>
3055 EOF
3056 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3057 #include <stdlib.h>
3058 EOF
3059
3060 check_host_cflags -std=c99
3061 check_host_cflags -Wall
3062
3063 check_64bit(){
3064     arch32=$1
3065     arch64=$2
3066     expr=$3
3067     check_code cc "" "int test[2*($expr) - 1]" &&
3068         subarch=$arch64 || subarch=$arch32
3069 }
3070
3071 case "$arch" in
3072     aarch64|alpha|ia64)
3073         spic=$shared
3074     ;;
3075     mips)
3076         check_64bit mips mips64 '_MIPS_SIM > 1'
3077         spic=$shared
3078     ;;
3079     parisc)
3080         check_64bit parisc parisc64 'sizeof(void *) > 4'
3081         spic=$shared
3082     ;;
3083     ppc)
3084         check_64bit ppc ppc64 'sizeof(void *) > 4'
3085         spic=$shared
3086     ;;
3087     sparc)
3088         check_64bit sparc sparc64 'sizeof(void *) > 4'
3089         spic=$shared
3090     ;;
3091     x86)
3092         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3093         if test "$subarch" = "x86_64"; then
3094             spic=$shared
3095         fi
3096     ;;
3097 esac
3098
3099 enable $subarch
3100 enabled spic && enable_weak pic
3101
3102 # OS specific
3103 case $target_os in
3104     aix)
3105         SHFLAGS=-shared
3106         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3107         enabled shared && add_ldflags -Wl,-brtl
3108         ;;
3109     haiku)
3110         prefix_default="/boot/common"
3111         network_extralibs="-lnetwork"
3112         host_libs=
3113         ;;
3114     sunos)
3115         SHFLAGS='-shared -Wl,-h,$$(@F)'
3116         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3117         network_extralibs="-lsocket -lnsl"
3118         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3119         # When using suncc to build, the Solaris linker will mark
3120         # an executable with each instruction set encountered by
3121         # the Solaris assembler.  As our libraries contain their own
3122         # guards for processor-specific code, instead suppress
3123         # generation of the HWCAPS ELF section on Solaris x86 only.
3124         enabled_all suncc x86 &&
3125             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3126             add_ldflags -Wl,-M,mapfile
3127         nm_default='nm -P -g'
3128         ;;
3129     netbsd)
3130         disable symver
3131         oss_indev_extralibs="-lossaudio"
3132         oss_outdev_extralibs="-lossaudio"
3133         ;;
3134     openbsd|bitrig)
3135         disable symver
3136         SHFLAGS='-shared'
3137         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3138         SLIB_INSTALL_LINKS=
3139         oss_indev_extralibs="-lossaudio"
3140         oss_outdev_extralibs="-lossaudio"
3141         ;;
3142     dragonfly)
3143         disable symver
3144         ;;
3145     freebsd)
3146         ;;
3147     bsd/os)
3148         add_extralibs -lpoll -lgnugetopt
3149         ;;
3150     darwin)
3151         gas="gas-preprocessor.pl $cc"
3152         enabled ppc && add_asflags -force_cpusubtype_ALL
3153         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3154         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3155         add_ldflags -Wl,-dynamic,-search_paths_first
3156         SLIBSUF=".dylib"
3157         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3158         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3159         objformat="macho"
3160         enabled x86_64 && objformat="macho64"
3161         enabled_any pic shared ||
3162             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3163         ;;
3164     mingw32*)
3165         if test $target_os = "mingw32ce"; then
3166             disable network
3167         else
3168             target_os=mingw32
3169         fi
3170         LIBTARGET=i386
3171         if enabled x86_64; then
3172             LIBTARGET="i386:x86-64"
3173         elif enabled arm; then
3174             LIBTARGET=arm-wince
3175         fi
3176         check_ldflags -Wl,--nxcompat
3177         check_ldflags -Wl,--dynamicbase
3178         shlibdir_default="$bindir_default"
3179         SLIBPREF=""
3180         SLIBSUF=".dll"
3181         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3182         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3183         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3184         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3185         SLIB_INSTALL_LINKS=
3186         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3187         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3188         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3189         objformat="win32"
3190         dlltool="${cross_prefix}dlltool"
3191         ranlib=:
3192         enable dos_paths
3193         ;;
3194     win32|win64)
3195         if enabled shared; then
3196             # Link to the import library instead of the normal static library
3197             # for shared libs.
3198             LD_LIB='%.lib'
3199             # Cannot build both shared and static libs with MSVC or icl.
3200             disable static
3201         fi
3202         shlibdir_default="$bindir_default"
3203         SLIBPREF=""
3204         SLIBSUF=".dll"
3205         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3206         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3207         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3208         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3209         SLIB_INSTALL_LINKS=
3210         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3211         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3212         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3213         objformat="win32"
3214         ranlib=:
3215         enable dos_paths
3216         ;;
3217     cygwin*)
3218         target_os=cygwin
3219         shlibdir_default="$bindir_default"
3220         SLIBPREF="cyg"
3221         SLIBSUF=".dll"
3222         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3223         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3224         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3225         SLIB_INSTALL_LINKS=
3226         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3227         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3228         objformat="win32"
3229         enable dos_paths
3230         ;;
3231     *-dos|freedos|opendos)
3232         network_extralibs="-lsocket"
3233         objformat="coff"
3234         enable dos_paths
3235         add_cppflags -U__STRICT_ANSI__
3236         ;;
3237     linux)
3238         enable dv1394
3239         ;;
3240     irix*)
3241         target_os=irix
3242         ranlib="echo ignoring ranlib"
3243         ;;
3244     os/2*)
3245         ln_s="cp -f"
3246         objformat="aout"
3247         add_cppflags -D_GNU_SOURCE
3248         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3249         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3250         LIBSUF="_s.a"
3251         SLIBPREF=""
3252         SLIBSUF=".dll"
3253         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3254         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3255         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3256             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3257             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3258             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3259             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3260             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3261         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3262             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3263         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3264         enable dos_paths
3265         ;;
3266     gnu/kfreebsd)
3267         add_cppflags -D_BSD_SOURCE
3268         ;;
3269     gnu)
3270         ;;
3271     qnx)
3272         add_cppflags -D_QNX_SOURCE
3273         network_extralibs="-lsocket"
3274         ;;
3275     symbian)
3276         SLIBSUF=".dll"
3277         enable dos_paths
3278         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3279         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3280         add_ldflags -Wl,--target1-abs,--no-undefined \
3281                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3282                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3283         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3284                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3285                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3286         ;;
3287     osf1)
3288         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3289         ;;
3290     minix)
3291         ;;
3292     plan9)
3293         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3294                      -D_REENTRANT_SOURCE        \
3295                      -D_RESEARCH_SOURCE         \
3296                      -DFD_SETSIZE=96            \
3297                      -DHAVE_SOCK_OPTS
3298         add_compat strtod.o strtod=avpriv_strtod
3299         network_extralibs='-lbsd'
3300         exeobjs=compat/plan9/main.o
3301         disable avserver
3302         cp_f='cp'
3303         ;;
3304     none)
3305         ;;
3306     *)
3307         die "Unknown OS '$target_os'."
3308         ;;
3309 esac
3310
3311 # determine libc flavour
3312
3313 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3314 if check_cpp_condition features.h "defined __UCLIBC__"; then
3315     libc_type=uclibc
3316     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3317 elif check_cpp_condition features.h "defined __GLIBC__"; then
3318     libc_type=glibc
3319     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3320 # MinGW headers can be installed on Cygwin, so check for newlib first.
3321 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3322     libc_type=newlib
3323     add_cppflags -U__STRICT_ANSI__
3324 elif check_header _mingw.h; then
3325     libc_type=mingw
3326     check_cpp_condition _mingw.h \
3327         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3328             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3329         die "ERROR: MinGW runtime version must be >= 3.15."
3330     add_cppflags -U__STRICT_ANSI__
3331 elif check_func_headers stdlib.h _get_doserrno; then
3332     libc_type=msvcrt
3333     add_compat strtod.o strtod=avpriv_strtod
3334     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3335                                  _snprintf=avpriv_snprintf  \
3336                                  vsnprintf=avpriv_vsnprintf
3337     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3338     # 0x601 by default unless something else is set by the user.
3339     # This can easily lead to us detecting functions only present
3340     # in such new versions and producing binaries requiring windows 7.0.
3341     # Therefore explicitly set the default to XP unless the user has
3342     # set something else on the command line.
3343     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3344 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3345     libc_type=klibc
3346 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3347     libc_type=bionic
3348     add_compat strtod.o strtod=avpriv_strtod
3349 fi
3350
3351 test -n "$libc_type" && enable $libc_type
3352
3353 # hacks for compiler/libc/os combinations
3354
3355 if enabled_all tms470 glibc; then
3356     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3357     add_cppflags -D__USER_LABEL_PREFIX__=
3358     add_cppflags -D__builtin_memset=memset
3359     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3360     add_cflags   -pds=48    # incompatible redefinition of macro
3361 fi
3362
3363 if enabled_all ccc glibc; then
3364     add_ldflags -Wl,-z,now  # calls to libots crash without this
3365 fi
3366
3367 esc(){
3368     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3369 }
3370
3371 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3372
3373 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3374
3375 set_default $PATHS_LIST
3376 set_default nm
3377
3378 # we need to build at least one lib type
3379 if ! enabled_any static shared; then
3380     cat <<EOF
3381 At least one library type must be built.
3382 Specify --enable-static to build the static libraries or --enable-shared to
3383 build the shared libraries as well. To only build the shared libraries specify
3384 --disable-static in addition to --enable-shared.
3385 EOF
3386     exit 1;
3387 fi
3388
3389 die_license_disabled() {
3390     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3391 }
3392
3393 die_license_disabled gpl libcdio
3394 die_license_disabled gpl libx264
3395 die_license_disabled gpl libxavs
3396 die_license_disabled gpl libxvid
3397 die_license_disabled gpl x11grab
3398
3399 die_license_disabled nonfree libfaac
3400 die_license_disabled nonfree libfdk_aac
3401 die_license_disabled nonfree openssl
3402
3403 die_license_disabled version3 libopencore_amrnb
3404 die_license_disabled version3 libopencore_amrwb
3405 die_license_disabled version3 libvo_aacenc
3406 die_license_disabled version3 libvo_amrwbenc
3407
3408 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3409
3410 disabled optimizations || check_cflags -fomit-frame-pointer
3411
3412 enable_weak_pic() {
3413     disabled pic && return
3414     enable pic
3415     add_cppflags -DPIC
3416     case "$target_os" in
3417     mingw*|cygwin*)
3418         ;;
3419     *)
3420         add_cflags -fPIC
3421         ;;
3422     esac
3423     add_asflags  -fPIC
3424 }
3425
3426 enabled pic && enable_weak_pic
3427
3428 check_cc <<EOF || die "Symbol mangling check failed."
3429 int ff_extern;
3430 EOF
3431 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3432 extern_prefix=${sym%%ff_extern*}
3433
3434 check_cc <<EOF && enable_weak inline_asm
3435 void foo(void) { __asm__ volatile ("" ::); }
3436 EOF
3437
3438 _restrict=
3439 for restrict_keyword in restrict __restrict__ __restrict; do
3440     check_cc <<EOF && _restrict=$restrict_keyword && break
3441 void foo(char * $restrict_keyword p);
3442 EOF
3443 done
3444
3445 check_cc <<EOF && enable pragma_deprecated
3446 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3447 EOF
3448
3449 check_cc <<EOF && enable attribute_packed
3450 struct { int x; } __attribute__((packed)) x;
3451 EOF
3452
3453 check_cc <<EOF && enable attribute_may_alias
3454 union { int x; } __attribute__((may_alias)) x;
3455 EOF
3456
3457 check_cc <<EOF || die "endian test failed"
3458 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3459 EOF
3460 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3461
3462 check_inline_asm inline_asm_labels '"1:\n"'
3463
3464 if enabled alpha; then
3465
3466     check_cflags -mieee
3467
3468 elif enabled arm; then
3469
3470     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3471     enabled thumb && check_cflags -mthumb || check_cflags -marm
3472     nogas=die
3473
3474     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3475         enable vfp_args
3476     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3477         case "${cross_prefix:-$cc}" in
3478             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3479             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3480 __asm__ (".eabi_attribute 28, 1");
3481 int main(void) { return 0; }
3482 EOF
3483         esac
3484         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3485     fi
3486
3487     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3488     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3489     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3490     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3491     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3492     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3493
3494     [ $target_os = linux ] ||
3495         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3496             $ARCH_EXT_LIST_ARM
3497
3498     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3499     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3500
3501     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3502
3503 elif enabled mips; then
3504
3505     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3506
3507 elif enabled parisc; then
3508
3509     if enabled gcc; then
3510         case $($cc -dumpversion) in
3511             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3512         esac
3513     fi
3514
3515 elif enabled ppc; then
3516
3517     enable local_aligned_8 local_aligned_16
3518
3519     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3520     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3521     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3522     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3523
3524     # AltiVec flags: The FSF version of GCC differs from the Apple version
3525     if enabled altivec; then
3526         nogas=warn
3527         check_cflags -maltivec -mabi=altivec &&
3528         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3529         check_cflags -faltivec
3530
3531         # check if our compiler supports Motorola AltiVec C API
3532         check_cc <<EOF || disable altivec
3533 $inc_altivec_h
3534 int main(void) {
3535     vector signed int v1 = (vector signed int) { 0 };
3536     vector signed int v2 = (vector signed int) { 1 };
3537     v1 = vec_add(v1, v2);
3538     return 0;
3539 }
3540 EOF
3541
3542         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3543     fi
3544
3545 elif enabled sparc; then
3546
3547     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3548
3549 elif enabled x86; then
3550
3551     check_builtin rdtsc    intrin.h   "__rdtsc()"
3552     check_builtin mm_empty mmintrin.h "_mm_empty()"
3553
3554     enable local_aligned_8 local_aligned_16
3555
3556     # check whether EBP is available on x86
3557     # As 'i' is stored on the stack, this program will crash
3558     # if the base pointer is used to access it because the
3559     # base pointer is cleared in the inline assembly code.
3560     check_exec_crash <<EOF && enable ebp_available
3561 volatile int i=0;
3562 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3563 return i;
3564 EOF
3565
3566     # check whether EBX is available on x86
3567     check_inline_asm ebx_available '""::"b"(0)' &&
3568         check_inline_asm ebx_available '"":::"%ebx"'
3569
3570     # check whether xmm clobbers are supported
3571     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3572
3573     # check whether binutils is new enough to compile SSSE3/MMXEXT
3574     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3575     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3576
3577     if ! disabled_any asm mmx yasm; then
3578         if check_cmd $yasmexe --version; then
3579             enabled x86_64 && yasm_extra="-m amd64"
3580             yasm_debug="-g dwarf2"
3581         elif check_cmd nasm -v; then
3582             yasmexe=nasm
3583             yasm_debug="-g -F dwarf"
3584             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3585         fi
3586
3587         YASMFLAGS="-f $objformat $yasm_extra"
3588         enabled pic               && append YASMFLAGS "-DPIC"
3589         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3590         case "$objformat" in
3591             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3592         esac
3593
3594         check_yasm "movbe ecx, [5]" && enable yasm ||
3595             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3596         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3597         check_yasm "CPU amdnop" && enable cpunop
3598     fi
3599
3600     case "$cpu" in
3601         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3602             disable fast_clz
3603         ;;
3604     esac
3605
3606 fi
3607
3608 if enabled asm; then
3609     as=${gas:=$as}
3610     check_as <<EOF && enable gnu_as || \
3611         $nogas "GNU assembler not found, install gas-preprocessor"
3612 .macro m n
3613 \n: .int 0
3614 .endm
3615 m x
3616 EOF
3617 fi
3618
3619 check_ldflags -Wl,--as-needed
3620
3621 if check_func dlopen; then
3622     ldl=
3623 elif check_func dlopen -ldl; then
3624     ldl=-ldl
3625 fi
3626
3627 if ! disabled network; then
3628     check_type "sys/types.h sys/socket.h" socklen_t
3629     check_type netdb.h "struct addrinfo"
3630     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3631     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3632     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3633     check_type netinet/in.h "struct sockaddr_in6"
3634     check_type poll.h "struct pollfd"
3635     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3636     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3637     check_type netinet/sctp.h "struct sctp_event_subscribe"
3638     check_func getaddrinfo $network_extralibs
3639     check_func getservbyport $network_extralibs
3640     # Prefer arpa/inet.h over winsock2
3641     if check_header arpa/inet.h ; then
3642         check_func closesocket
3643     elif check_header winsock2.h ; then
3644         check_func_headers winsock2.h closesocket -lws2 &&
3645             network_extralibs="-lws2" ||
3646         { check_func_headers winsock2.h closesocket -lws2_32 &&
3647             network_extralibs="-lws2_32"; }
3648         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3649         check_type ws2tcpip.h socklen_t
3650         check_type ws2tcpip.h "struct addrinfo"
3651         check_type ws2tcpip.h "struct group_source_req"
3652         check_type ws2tcpip.h "struct ip_mreq_source"
3653         check_type ws2tcpip.h "struct ipv6_mreq"
3654         check_type winsock2.h "struct pollfd"
3655         check_type ws2tcpip.h "struct sockaddr_in6"
3656         check_type ws2tcpip.h "struct sockaddr_storage"
3657         check_struct winsock2.h "struct sockaddr" sa_len
3658     else
3659         disable network
3660     fi
3661 fi
3662
3663 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3664 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3665
3666 check_func  fcntl
3667 check_func  fork
3668 check_func_headers stdlib.h getenv
3669 check_func  gethrtime
3670 check_func  getopt
3671 check_func  getrusage
3672 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3673 check_func  gettimeofday
3674 check_func  inet_aton $network_extralibs
3675 check_func  isatty
3676 check_func  localtime_r
3677 check_func  ${malloc_prefix}memalign            && enable memalign
3678 check_func  mkstemp
3679 check_func  mmap
3680 check_func  mprotect
3681 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3682 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3683 check_func  setrlimit
3684 check_func  strerror_r
3685 check_func  strptime
3686 check_func  strtok_r
3687 check_func  sched_getaffinity
3688 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3689 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3690 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3691 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3692 check_func  sysconf
3693 check_func  sysctl
3694 check_func  usleep
3695 check_func_headers io.h setmode
3696 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3697 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3698 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3699 check_func_headers windows.h GetProcessAffinityMask
3700 check_func_headers windows.h GetProcessTimes
3701 check_func_headers windows.h GetSystemTimeAsFileTime
3702 check_func_headers windows.h MapViewOfFile
3703 check_func_headers windows.h SetConsoleTextAttribute
3704 check_func_headers windows.h Sleep
3705 check_func_headers windows.h VirtualAlloc
3706
3707 check_header direct.h
3708 check_header dlfcn.h
3709 check_header dxva.h
3710 check_header dxva2api.h
3711 check_header io.h
3712 check_header malloc.h
3713 check_header poll.h
3714 check_header sys/mman.h
3715 check_header sys/param.h
3716 check_header sys/resource.h
3717 check_header sys/select.h
3718 check_header sys/time.h
3719 check_header sys/un.h
3720 check_header unistd.h
3721 check_header vdpau/vdpau.h
3722 check_header vdpau/vdpau_x11.h
3723 check_header VideoDecodeAcceleration/VDADecoder.h
3724 check_header windows.h
3725 check_header X11/extensions/XvMClib.h
3726
3727 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3728 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3729
3730 if ! disabled w32threads && ! enabled pthreads; then
3731     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3732 fi
3733
3734 # check for some common methods of building with pthread support
3735 # do this before the optional library checks as some of them require pthreads
3736 if ! disabled pthreads && ! enabled w32threads; then
3737     enable pthreads
3738     if check_func pthread_create; then
3739         :
3740     elif check_func pthread_create -pthread; then
3741         add_cflags -pthread
3742         add_extralibs -pthread
3743     elif check_func pthread_create -pthreads; then
3744         add_cflags -pthreads
3745         add_extralibs -pthreads
3746     elif check_func pthread_create -lpthreadGC2; then
3747         add_extralibs -lpthreadGC2
3748     elif ! check_lib pthread.h pthread_create -lpthread; then
3749         disable pthreads
3750     fi
3751 fi
3752
3753 for thread in $THREADS_LIST; do
3754     if enabled $thread; then
3755         test -n "$thread_type" &&
3756             die "ERROR: Only one thread type must be selected." ||
3757             thread_type="$thread"
3758     fi
3759 done
3760
3761 enabled sync_val_compare_and_swap && enable atomics_gcc
3762 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
3763 enabled MemoryBarrier && enable atomics_win32
3764
3765 check_lib math.h sin -lm && LIBM="-lm"
3766 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3767
3768 atan2f_args=2
3769 ldexpf_args=2
3770 powf_args=2
3771
3772 for func in $MATH_FUNCS; do
3773     eval check_mathfunc $func \${${func}_args:-1}
3774 done
3775
3776 # these are off by default, so fail if requested and not available
3777 enabled avisynth          && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3778 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3779 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3780 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3781 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3782 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3783 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3784                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3785                                done || die "ERROR: libgsm not found"; }
3786 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3787 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3788 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3789 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3790 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3791 enabled libopenjpeg       && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3792 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3793 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3794 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3795 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3796 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3797 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3798 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3799 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3800 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3801 enabled libvpx            && {
3802     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3803                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3804     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3805                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3806     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3807     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3808 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3809 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3810                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3811                                die "ERROR: libx264 version must be >= 0.118."; }
3812 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3813 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3814 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3815                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3816                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3817                                die "ERROR: openssl not found"; }
3818
3819 if enabled gnutls; then
3820     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3821     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3822 fi
3823
3824 # libdc1394 check
3825 if enabled libdc1394; then
3826     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3827         enable libdc1394_2; } ||
3828     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3829         enable libdc1394_1; } ||
3830     die "ERROR: No version of libdc1394 found "
3831 fi
3832
3833 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3834     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3835     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3836     enable sdl
3837 fi
3838
3839 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3840
3841 check_header linux/fb.h
3842 check_header linux/videodev2.h
3843 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3844
3845 check_header sys/videoio.h
3846
3847 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3848 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3849 # w32api 3.12 had it defined wrong
3850 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3851
3852 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3853 { check_header dev/bktr/ioctl_meteor.h &&
3854   check_header dev/bktr/ioctl_bt848.h; } ||
3855 { check_header machine/ioctl_meteor.h &&
3856   check_header machine/ioctl_bt848.h; } ||
3857 { check_header dev/video/meteor/ioctl_meteor.h &&
3858   check_header dev/video/bktr/ioctl_bt848.h; } ||
3859 check_header dev/ic/bt8xx.h
3860
3861 check_header sndio.h
3862 check_header sys/soundcard.h
3863 check_header soundcard.h
3864
3865 enabled_any alsa_indev alsa_outdev &&
3866     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3867
3868 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
3869     check_func jack_port_get_latency_range -ljack
3870
3871 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3872
3873 if enabled libcdio; then
3874     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
3875     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3876 fi
3877
3878 enabled x11grab                                           &&
3879 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3880 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3881 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3882
3883 enabled vdpau &&
3884     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3885     disable vdpau
3886
3887 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3888
3889 # add some useful compiler flags if supported
3890 check_cflags -Wdeclaration-after-statement
3891 check_cflags -Wall
3892 check_cflags -Wno-parentheses
3893 check_cflags -Wno-switch
3894 check_cflags -Wno-format-zero-length
3895 check_cflags -Wdisabled-optimization
3896 check_cflags -Wpointer-arith
3897 check_cflags -Wredundant-decls
3898 check_cflags -Wno-pointer-sign
3899 check_cflags -Wcast-qual
3900 check_cflags -Wwrite-strings
3901 check_cflags -Wtype-limits
3902 check_cflags -Wundef
3903 check_cflags -Wmissing-prototypes
3904 check_cflags -Wstrict-prototypes
3905 enabled extra_warnings && check_cflags -Winline
3906
3907 # add some linker flags
3908 check_ldflags -Wl,--warn-common
3909 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3910 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3911
3912 enabled xmm_clobber_test &&
3913     check_ldflags -Wl,--wrap,avcodec_open2              \
3914                   -Wl,--wrap,avcodec_decode_audio4      \
3915                   -Wl,--wrap,avcodec_decode_video2      \
3916                   -Wl,--wrap,avcodec_decode_subtitle2   \
3917                   -Wl,--wrap,avcodec_encode_audio2      \
3918                   -Wl,--wrap,avcodec_encode_video2      \
3919                   -Wl,--wrap,avcodec_encode_subtitle    \
3920                   -Wl,--wrap,sws_scale ||
3921     disable xmm_clobber_test
3922
3923 echo "X{};" > $TMPV
3924 if test_ldflags -Wl,--version-script,$TMPV; then
3925     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3926     check_cc <<EOF && enable symver_asm_label
3927 void ff_foo(void) __asm__ ("av_foo@VERSION");
3928 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3929 EOF
3930     check_cc <<EOF && enable symver_gnu_asm
3931 __asm__(".symver ff_foo,av_foo@VERSION");
3932 void ff_foo(void) {}
3933 EOF
3934 fi
3935
3936 if [ -z "$optflags" ]; then
3937     if enabled small; then
3938         optflags=$cflags_size
3939     elif enabled optimizations; then
3940         optflags=$cflags_speed
3941     else
3942         optflags=$cflags_noopt
3943     fi
3944 fi
3945
3946 check_optflags(){
3947     check_cflags "$@"
3948     enabled lto && check_ldflags "$@"
3949 }
3950
3951
3952 if enabled lto; then
3953     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
3954     check_cflags  -flto
3955     check_ldflags -flto $cpuflags
3956 fi
3957
3958 check_optflags $optflags
3959 check_optflags -fno-math-errno
3960 check_optflags -fno-signed-zeros
3961
3962 if enabled icc; then
3963     # Just warnings, no remarks
3964     check_cflags -w1
3965     # -wd: Disable following warnings
3966     # 144, 167, 556: -Wno-pointer-sign
3967     # 1292: attribute "foo" ignored
3968     # 1419: external declaration in primary source file
3969     # 10006: ignoring unknown option -fno-signed-zeros
3970     # 10148: ignoring unknown option -Wno-parentheses
3971     # 10156: ignoring option '-W'; no argument required
3972     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
3973     # 11030: Warning unknown option --as-needed
3974     # 10156: ignoring option '-export'; no argument required
3975     check_ldflags -wd10156,11030
3976     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3977     enable ebp_available
3978     if enabled x86_32; then
3979         icc_version=$($cc -dumpversion)
3980         test ${icc_version%%.*} -ge 11 &&
3981             check_cflags -falign-stack=maintain-16-byte ||
3982             disable aligned_stack
3983     fi
3984 elif enabled ccc; then
3985     # disable some annoying warnings
3986     add_cflags -msg_disable bitnotint
3987     add_cflags -msg_disable mixfuncvoid
3988     add_cflags -msg_disable nonstandcast
3989     add_cflags -msg_disable unsupieee
3990 elif enabled gcc; then
3991     check_optflags -fno-tree-vectorize
3992     check_cflags -Werror=implicit-function-declaration
3993     check_cflags -Werror=missing-prototypes
3994     check_cflags -Werror=return-type
3995     check_cflags -Werror=declaration-after-statement
3996     check_cflags -Werror=vla
3997 elif enabled llvm_gcc; then
3998     check_cflags -mllvm -stack-alignment=16
3999 elif enabled clang; then
4000     check_cflags -mllvm -stack-alignment=16
4001     check_cflags -Qunused-arguments
4002     check_cflags -Werror=implicit-function-declaration
4003     check_cflags -Werror=missing-prototypes
4004     check_cflags -Werror=return-type
4005 elif enabled cparser; then
4006     add_cflags -Wno-missing-variable-declarations
4007     add_cflags -Wno-empty-statement
4008 elif enabled armcc; then
4009     # 2523: use of inline assembler is deprecated
4010     add_cflags -W${armcc_opt},--diag_suppress=2523
4011     add_cflags -W${armcc_opt},--diag_suppress=1207
4012     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4013     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4014     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4015     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4016 elif enabled tms470; then
4017     add_cflags -pds=824 -pds=837
4018 elif enabled pathscale; then
4019     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4020 elif enabled_any msvc icl; then
4021     enabled x86_32 && disable aligned_stack
4022     enabled_all x86_32 debug && add_cflags -Oy-
4023     enabled debug && add_ldflags -debug
4024     enable pragma_deprecated
4025     if enabled icl; then
4026         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4027         # (correctly) on icl 13.x.
4028         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4029             add_cflags -Qansi-alias
4030         # icl will pass the inline asm tests but inline asm is currently
4031         # not supported (build will fail)
4032         disable inline_asm
4033     fi
4034 fi
4035
4036 case $target_os in
4037     osf1)
4038         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4039     ;;
4040     plan9)
4041         add_cppflags -Dmain=plan9_main
4042     ;;
4043 esac
4044
4045 enabled_any $THREADS_LIST      && enable threads
4046 enabled_any $ATOMICS_LIST      && enable atomics_native
4047
4048 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4049
4050 check_deps $CONFIG_LIST       \
4051            $CONFIG_EXTRA      \
4052            $HAVE_LIST         \
4053            $ALL_COMPONENTS    \
4054
4055 ! enabled_any memalign posix_memalign aligned_malloc &&
4056     enabled_any $need_memalign && enable memalign_hack
4057
4058 echo "install prefix            $prefix"
4059 echo "source path               $source_path"
4060 echo "C compiler                $cc"
4061 echo "ARCH                      $arch ($cpu)"
4062 if test "$build_suffix" != ""; then
4063     echo "build suffix              $build_suffix"
4064 fi
4065 if test "$extra_version" != ""; then
4066     echo "version string suffix     $extra_version"
4067 fi
4068 echo "big-endian                ${bigendian-no}"
4069 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4070 if enabled x86; then
4071     echo "${yasmexe}                      ${yasm-no}"
4072     echo "MMX enabled               ${mmx-no}"
4073     echo "MMXEXT enabled            ${mmxext-no}"
4074     echo "3DNow! enabled            ${amd3dnow-no}"
4075     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4076     echo "SSE enabled               ${sse-no}"
4077     echo "SSSE3 enabled             ${ssse3-no}"
4078     echo "AVX enabled               ${avx-no}"
4079     echo "FMA4 enabled              ${fma4-no}"
4080     echo "i686 features enabled     ${i686-no}"
4081     echo "CMOV is fast              ${fast_cmov-no}"
4082     echo "EBX available             ${ebx_available-no}"
4083     echo "EBP available             ${ebp_available-no}"
4084 fi
4085 if enabled arm; then
4086     echo "ARMv5TE enabled           ${armv5te-no}"
4087     echo "ARMv6 enabled             ${armv6-no}"
4088     echo "ARMv6T2 enabled           ${armv6t2-no}"
4089     echo "VFP enabled               ${vfp-no}"
4090     echo "NEON enabled              ${neon-no}"
4091 fi
4092 if enabled ppc; then
4093     echo "AltiVec enabled           ${altivec-no}"
4094     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4095     echo "dcbzl available           ${dcbzl-no}"
4096 fi
4097 if enabled sparc; then
4098     echo "VIS enabled               ${vis-no}"
4099 fi
4100 echo "debug symbols             ${debug-no}"
4101 echo "optimize for size         ${small-no}"
4102 echo "optimizations             ${optimizations-no}"
4103 echo "static                    ${static-no}"
4104 echo "shared                    ${shared-no}"
4105 echo "new filter support        ${avfilter-no}"
4106 echo "network support           ${network-no}"
4107 echo "threading support         ${thread_type-no}"
4108 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4109 echo "SDL support               ${sdl-no}"
4110 test -n "$random_seed" &&
4111     echo "random seed               ${random_seed}"
4112 echo
4113
4114 echo "External libraries:"
4115 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4116 echo
4117
4118 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4119     echo "Enabled ${type}s:"
4120     eval list=\$$(toupper $type)_LIST
4121     print_enabled '_*' $list | print_3_columns
4122     echo
4123 done
4124
4125 license="LGPL version 2.1 or later"
4126 if enabled nonfree; then
4127     license="nonfree and unredistributable"
4128 elif enabled gplv3; then
4129     license="GPL version 3 or later"
4130 elif enabled lgplv3; then
4131     license="LGPL version 3 or later"
4132 elif enabled gpl; then
4133     license="GPL version 2 or later"
4134 fi
4135
4136 echo "License: $license"
4137
4138 echo "Creating config.mak and config.h..."
4139
4140 test -e Makefile || $ln_s "$source_path/Makefile" .
4141
4142 config_files="$TMPH config.mak"
4143
4144 cat > config.mak <<EOF
4145 # Automatically generated by configure - do not modify!
4146 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4147 prefix=$prefix
4148 LIBDIR=\$(DESTDIR)$libdir
4149 SHLIBDIR=\$(DESTDIR)$shlibdir
4150 INCDIR=\$(DESTDIR)$incdir
4151 BINDIR=\$(DESTDIR)$bindir
4152 DATADIR=\$(DESTDIR)$datadir
4153 DOCDIR=\$(DESTDIR)$docdir
4154 MANDIR=\$(DESTDIR)$mandir
4155 SRC_PATH=$source_path
4156 CC_IDENT=$cc_ident
4157 ARCH=$arch
4158 CC=$cc
4159 AS=$as
4160 LD=$ld
4161 DEPCC=$dep_cc
4162 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4163 DEPAS=$as
4164 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4165 YASM=$yasmexe
4166 DEPYASM=$yasmexe
4167 AR=$ar
4168 ARFLAGS=$arflags
4169 AR_O=$ar_o
4170 RANLIB=$ranlib
4171 STRIP=$strip
4172 LN_S=$ln_s
4173 CPPFLAGS=$CPPFLAGS
4174 CFLAGS=$CFLAGS
4175 ASFLAGS=$ASFLAGS
4176 AS_C=$AS_C
4177 AS_O=$AS_O
4178 CC_C=$CC_C
4179 CC_E=$CC_E
4180 CC_O=$CC_O
4181 LD_O=$LD_O
4182 LD_LIB=$LD_LIB
4183 LD_PATH=$LD_PATH
4184 DLLTOOL=$dlltool
4185 LDFLAGS=$LDFLAGS
4186 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4187 YASMFLAGS=$YASMFLAGS
4188 BUILDSUF=$build_suffix
4189 FULLNAME=$FULLNAME
4190 LIBPREF=$LIBPREF
4191 LIBSUF=$LIBSUF
4192 LIBNAME=$LIBNAME
4193 SLIBPREF=$SLIBPREF
4194 SLIBSUF=$SLIBSUF
4195 EXESUF=$EXESUF
4196 EXTRA_VERSION=$extra_version
4197 CCDEP=$CCDEP
4198 CCDEP_FLAGS=$CCDEP_FLAGS
4199 ASDEP=$ASDEP
4200 ASDEP_FLAGS=$ASDEP_FLAGS
4201 CC_DEPFLAGS=$CC_DEPFLAGS
4202 AS_DEPFLAGS=$AS_DEPFLAGS
4203 HOSTCC=$host_cc
4204 HOSTLD=$host_ld
4205 HOSTCFLAGS=$host_cflags
4206 HOSTCPPFLAGS=$host_cppflags
4207 HOSTEXESUF=$HOSTEXESUF
4208 HOSTLDFLAGS=$host_ldflags
4209 HOSTLIBS=$host_libs
4210 DEPHOSTCC=$host_cc
4211 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4212 HOSTCCDEP=$HOSTCCDEP
4213 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4214 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4215 HOSTCC_C=$HOSTCC_C
4216 HOSTCC_O=$HOSTCC_O
4217 HOSTLD_O=$HOSTLD_O
4218 TARGET_EXEC=$target_exec $target_exec_args
4219 TARGET_PATH=$target_path
4220 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4221 LIBS-avplay=$sdl_libs
4222 CFLAGS-avplay=$sdl_cflags
4223 ZLIB=$($ldflags_filter -lz)
4224 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4225 EXTRALIBS=$extralibs
4226 COMPAT_OBJS=$compat_objs
4227 EXEOBJS=$exeobjs
4228 INSTALL=install
4229 LIBTARGET=${LIBTARGET}
4230 SLIBNAME=${SLIBNAME}
4231 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4232 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4233 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4234 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4235 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4236 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4237 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4238 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4239 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4240 EOF
4241
4242 get_version(){
4243     lcname=lib${1}
4244     name=$(toupper $lcname)
4245     file=$source_path/$lcname/version.h
4246     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4247     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4248     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4249     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4250     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4251 }
4252
4253 map 'get_version $v' $LIBRARY_LIST
4254
4255 cat > $TMPH <<EOF
4256 /* Automatically generated by configure - do not modify! */
4257 #ifndef LIBAV_CONFIG_H
4258 #define LIBAV_CONFIG_H
4259 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4260 #define LIBAV_LICENSE "$(c_escape $license)"
4261 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4262 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4263 #define restrict $_restrict
4264 #define EXTERN_PREFIX "${extern_prefix}"
4265 #define EXTERN_ASM ${extern_prefix}
4266 #define SLIBSUF "$SLIBSUF"
4267 EOF
4268
4269 test -n "$malloc_prefix" &&
4270     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4271
4272 if enabled yasm; then
4273     append config_files $TMPASM
4274     printf '' >$TMPASM
4275 fi
4276
4277 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4278
4279 print_config ARCH_   "$config_files" $ARCH_LIST
4280 print_config HAVE_   "$config_files" $HAVE_LIST
4281 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4282                                      $CONFIG_EXTRA      \
4283                                      $ALL_COMPONENTS    \
4284
4285 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4286
4287 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4288 cp_if_changed $TMPH config.h
4289 touch .config
4290
4291 enabled yasm && cp_if_changed $TMPASM config.asm
4292
4293 cat > $TMPH <<EOF
4294 /* Generated by ffconf */
4295 #ifndef AVUTIL_AVCONFIG_H
4296 #define AVUTIL_AVCONFIG_H
4297 EOF
4298
4299 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4300
4301 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4302
4303 cp_if_changed $TMPH libavutil/avconfig.h
4304
4305 test -n "$WARNINGS" && printf "\n$WARNINGS"
4306
4307 # build pkg-config files
4308
4309 pkgconfig_generate(){
4310     name=$1
4311     shortname=${name#lib}${build_suffix}
4312     comment=$2
4313     version=$3
4314     libs=$4
4315     requires=$5
4316     enabled ${name#lib} || return 0
4317     mkdir -p $name
4318     cat <<EOF > $name/$name.pc
4319 prefix=$prefix
4320 exec_prefix=\${prefix}
4321 libdir=$libdir
4322 includedir=$incdir
4323
4324 Name: $name
4325 Description: $comment
4326 Version: $version
4327 Requires: $(enabled shared || echo $requires)
4328 Requires.private: $(enabled shared && echo $requires)
4329 Conflicts:
4330 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4331 Libs.private: $(enabled shared && echo $libs)
4332 Cflags: -I\${includedir}
4333 EOF
4334     cat <<EOF > $name/$name-uninstalled.pc
4335 prefix=
4336 exec_prefix=
4337 libdir=\${pcfiledir}
4338 includedir=${source_path}
4339
4340 Name: $name
4341 Description: $comment
4342 Version: $version
4343 Requires: $requires
4344 Conflicts:
4345 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4346 Cflags: -I\${includedir}
4347 EOF
4348 }
4349
4350 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4351 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4352 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4353 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4354
4355 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4356 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4357 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4358 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4359 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4360 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4361 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"