configure: Express atomics/thread deps through the dependency system
[libav.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-avx2           disable AVX2 optimizations
273   --disable-armv5te        disable armv5te optimizations
274   --disable-armv6          disable armv6 optimizations
275   --disable-armv6t2        disable armv6t2 optimizations
276   --disable-vfp            disable VFP optimizations
277   --disable-neon           disable NEON optimizations
278   --disable-vis            disable VIS optimizations
279   --disable-inline-asm     disable use of inline assembler
280   --disable-yasm           disable use of yasm assembler
281
282 Developer options (useful when working on Libav itself):
283   --disable-debug          disable debugging symbols
284   --enable-debug=LEVEL     set the debug level [$debuglevel]
285   --disable-optimizations  disable compiler optimizations
286   --enable-extra-warnings  enable more compiler warnings
287   --samples=PATH           location of test samples for FATE, if not set use
288                            \$LIBAV_SAMPLES at make invocation time.
289   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
290                            should be used only for debugging purposes)
291   --enable-random          randomly enable/disable components
292   --disable-random
293   --enable-random=LIST     randomly enable/disable specific components or
294   --disable-random=LIST    component groups. LIST is a comma-separated list
295                            of NAME[:PROB] entries where NAME is a component
296                            (group) and PROB the probability associated with
297                            NAME (default 0.5).
298   --random-seed=VALUE      seed value for --enable/disable-random
299
300 NOTE: Object files are built at the place where configure is launched.
301 EOF
302   exit 0
303 }
304
305 quotes='""'
306
307 log(){
308     echo "$@" >> $logfile
309 }
310
311 log_file(){
312     log BEGIN $1
313     pr -n -t $1 >> $logfile
314     log END $1
315 }
316
317 echolog(){
318     log "$@"
319     echo "$@"
320 }
321
322 warn(){
323     log "WARNING: $*"
324     WARNINGS="${WARNINGS}WARNING: $*\n"
325 }
326
327 die(){
328     echolog "$@"
329     cat <<EOF
330
331 If you think configure made a mistake, make sure you are using the latest
332 version from Git.  If the latest version fails, report the problem to the
333 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
334 EOF
335     if disabled logging; then
336         cat <<EOF
337 Rerun configure with logging enabled (do not use --disable-logging), and
338 include the log this produces with your report.
339 EOF
340     else
341         cat <<EOF
342 Include the log file "$logfile" produced by configure as this will help
343 solving the problem.
344 EOF
345     fi
346     exit 1
347 }
348
349 # Avoid locale weirdness, besides we really just want to translate ASCII.
350 toupper(){
351     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
352 }
353
354 tolower(){
355     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
356 }
357
358 c_escape(){
359     echo "$*" | sed 's/["\\]/\\\0/g'
360 }
361
362 sh_quote(){
363     v=$(echo "$1" | sed "s/'/'\\\\''/g")
364     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
365     echo "$v"
366 }
367
368 cleanws(){
369     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
370 }
371
372 filter(){
373     pat=$1
374     shift
375     for v; do
376         eval "case $v in $pat) echo $v ;; esac"
377     done
378 }
379
380 filter_out(){
381     pat=$1
382     shift
383     for v; do
384         eval "case $v in $pat) ;; *) echo $v ;; esac"
385     done
386 }
387
388 map(){
389     m=$1
390     shift
391     for v; do eval $m; done
392 }
393
394 add_suffix(){
395     suffix=$1
396     shift
397     for v; do echo ${v}${suffix}; done
398 }
399
400 set_all(){
401     value=$1
402     shift
403     for var in $*; do
404         eval $var=$value
405     done
406 }
407
408 set_weak(){
409     value=$1
410     shift
411     for var; do
412         eval : \${$var:=$value}
413     done
414 }
415
416 sanitize_var_name(){
417     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
418 }
419
420 set_safe(){
421     var=$1
422     shift
423     eval $(sanitize_var_name "$var")='$*'
424 }
425
426 get_safe(){
427     eval echo \$$(sanitize_var_name "$1")
428 }
429
430 pushvar(){
431     for pvar in $*; do
432         eval level=\${${pvar}_level:=0}
433         eval ${pvar}_${level}="\$$pvar"
434         eval ${pvar}_level=$(($level+1))
435     done
436 }
437
438 popvar(){
439     for pvar in $*; do
440         eval level=\${${pvar}_level:-0}
441         test $level = 0 && continue
442         eval level=$(($level-1))
443         eval $pvar="\${${pvar}_${level}}"
444         eval ${pvar}_level=$level
445         eval unset ${pvar}_${level}
446     done
447 }
448
449 enable(){
450     set_all yes $*
451 }
452
453 disable(){
454     set_all no $*
455 }
456
457 enable_weak(){
458     set_weak yes $*
459 }
460
461 disable_weak(){
462     set_weak no $*
463 }
464
465 enable_safe(){
466     for var; do
467         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
468     done
469 }
470
471 disable_safe(){
472     for var; do
473         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
474     done
475 }
476
477 do_enable_deep(){
478     for var; do
479         enabled $var && continue
480         eval sel="\$${var}_select"
481         eval sgs="\$${var}_suggest"
482         pushvar var sgs
483         enable_deep $sel
484         popvar sgs
485         enable_deep_weak $sgs
486         popvar var
487     done
488 }
489
490 enable_deep(){
491     do_enable_deep $*
492     enable $*
493 }
494
495 enable_deep_weak(){
496     for var; do
497         disabled $var && continue
498         pushvar var
499         do_enable_deep $var
500         popvar var
501         enable_weak $var
502     done
503 }
504
505 enabled(){
506     test "${1#!}" = "$1" && op== || op=!=
507     eval test "x\$${1#!}" $op "xyes"
508 }
509
510 disabled(){
511     test "${1#!}" = "$1" && op== || op=!=
512     eval test "x\$${1#!}" $op "xno"
513 }
514
515 enabled_all(){
516     for opt; do
517         enabled $opt || return 1
518     done
519 }
520
521 disabled_all(){
522     for opt; do
523         disabled $opt || return 1
524     done
525 }
526
527 enabled_any(){
528     for opt; do
529         enabled $opt && return 0
530     done
531 }
532
533 disabled_any(){
534     for opt; do
535         disabled $opt && return 0
536     done
537     return 1
538 }
539
540 set_default(){
541     for opt; do
542         eval : \${$opt:=\$${opt}_default}
543     done
544 }
545
546 is_in(){
547     value=$1
548     shift
549     for var in $*; do
550         [ $var = $value ] && return 0
551     done
552     return 1
553 }
554
555 do_check_deps(){
556     for cfg; do
557         cfg="${cfg#!}"
558         enabled ${cfg}_checking && die "Circular dependency for $cfg."
559         disabled ${cfg}_checking && continue
560         enable ${cfg}_checking
561         append allopts $cfg
562
563         eval dep_all="\$${cfg}_deps"
564         eval dep_any="\$${cfg}_deps_any"
565         eval dep_sel="\$${cfg}_select"
566         eval dep_sgs="\$${cfg}_suggest"
567         eval dep_ifa="\$${cfg}_if"
568         eval dep_ifn="\$${cfg}_if_any"
569
570         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
571         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
572         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
573
574         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
575         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
576         enabled_all  $dep_all || disable $cfg
577         enabled_any  $dep_any || disable $cfg
578         disabled_any $dep_sel && disable $cfg
579
580         if enabled $cfg; then
581             enable_deep $dep_sel
582             enable_deep_weak $dep_sgs
583         fi
584
585         disable ${cfg}_checking
586     done
587 }
588
589 check_deps(){
590     unset allopts
591
592     do_check_deps "$@"
593
594     for cfg in $allopts; do
595         enabled $cfg || continue
596         eval dep_extralibs="\$${cfg}_extralibs"
597         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
598     done
599 }
600
601 print_config(){
602     pfx=$1
603     files=$2
604     shift 2
605     map 'eval echo "$v \${$v:-no}"' "$@" |
606     awk "BEGIN { split(\"$files\", files) }
607         {
608             c = \"$pfx\" toupper(\$1);
609             v = \$2;
610             sub(/yes/, 1, v);
611             sub(/no/,  0, v);
612             for (f in files) {
613                 file = files[f];
614                 if (file ~ /\\.h\$/) {
615                     printf(\"#define %s %d\\n\", c, v) >>file;
616                 } else if (file ~ /\\.asm\$/) {
617                     printf(\"%%define %s %d\\n\", c, v) >>file;
618                 } else if (file ~ /\\.mak\$/) {
619                     n = -v ? \"\" : \"!\";
620                     printf(\"%s%s=yes\\n\", n, c) >>file;
621                 }
622             }
623         }"
624 }
625
626 print_enabled(){
627     suf=$1
628     shift
629     for v; do
630         enabled $v && printf "%s\n" ${v%$suf};
631     done
632 }
633
634 append(){
635     var=$1
636     shift
637     eval "$var=\"\$$var $*\""
638 }
639
640 prepend(){
641     var=$1
642     shift
643     eval "$var=\"$* \$$var\""
644 }
645
646 add_cppflags(){
647     append CPPFLAGS "$@"
648 }
649
650 add_cflags(){
651     append CFLAGS $($cflags_filter "$@")
652 }
653
654 add_asflags(){
655     append ASFLAGS $($asflags_filter "$@")
656 }
657
658 add_ldflags(){
659     append LDFLAGS $($ldflags_filter "$@")
660 }
661
662 add_stripflags(){
663     append STRIPFLAGS "$@"
664 }
665
666 add_extralibs(){
667     prepend extralibs $($ldflags_filter "$@")
668 }
669
670 add_host_cppflags(){
671     append host_cppflags "$@"
672 }
673
674 add_host_cflags(){
675     append host_cflags $($host_cflags_filter "$@")
676 }
677
678 add_host_ldflags(){
679     append host_ldflags $($host_ldflags_filter "$@")
680 }
681
682 add_compat(){
683     append compat_objs $1
684     shift
685     map 'add_cppflags -D$v' "$@"
686 }
687
688 check_cmd(){
689     log "$@"
690     "$@" >> $logfile 2>&1
691 }
692
693 cc_o(){
694     eval printf '%s\\n' $CC_O
695 }
696
697 cc_e(){
698     eval printf '%s\\n' $CC_E
699 }
700
701 check_cc(){
702     log check_cc "$@"
703     cat > $TMPC
704     log_file $TMPC
705     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
706 }
707
708 check_cpp(){
709     log check_cpp "$@"
710     cat > $TMPC
711     log_file $TMPC
712     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
713 }
714
715 as_o(){
716     eval printf '%s\\n' $AS_O
717 }
718
719 check_as(){
720     log check_as "$@"
721     cat > $TMPS
722     log_file $TMPS
723     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
724 }
725
726 check_inline_asm(){
727     log check_inline_asm "$@"
728     name="$1"
729     code="$2"
730     shift 2
731     disable $name
732     check_cc "$@" <<EOF && enable $name
733 void foo(void){ __asm__ volatile($code); }
734 EOF
735 }
736
737 check_insn(){
738     log check_insn "$@"
739     check_inline_asm ${1}_inline "\"$2\""
740     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
741 }
742
743 check_yasm(){
744     log check_yasm "$@"
745     echo "$1" > $TMPS
746     log_file $TMPS
747     shift 1
748     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
749 }
750
751 ld_o(){
752     eval printf '%s\\n' $LD_O
753 }
754
755 check_ld(){
756     log check_ld "$@"
757     flags=$(filter_out '-l*' "$@")
758     libs=$(filter '-l*' "$@")
759     check_cc $($cflags_filter $flags) || return
760     flags=$($ldflags_filter $flags)
761     libs=$($ldflags_filter $libs)
762     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
763 }
764
765 check_code(){
766     log check_code "$@"
767     check=$1
768     headers=$2
769     code=$3
770     shift 3
771     {
772         for hdr in $headers; do
773             echo "#include <$hdr>"
774         done
775         echo "int main(void) { $code; return 0; }"
776     } | check_$check "$@"
777 }
778
779 check_cppflags(){
780     log check_cppflags "$@"
781     check_cc "$@" <<EOF && append CPPFLAGS "$@"
782 int x;
783 EOF
784 }
785
786 test_cflags(){
787     log test_cflags "$@"
788     set -- $($cflags_filter "$@")
789     check_cc "$@" <<EOF
790 int x;
791 EOF
792 }
793
794 check_cflags(){
795     log check_cflags "$@"
796     test_cflags "$@" && add_cflags "$@"
797 }
798
799 test_ldflags(){
800     log test_ldflags "$@"
801     check_ld "$@" <<EOF
802 int main(void){ return 0; }
803 EOF
804 }
805
806 check_ldflags(){
807     log check_ldflags "$@"
808     test_ldflags "$@" && add_ldflags "$@"
809 }
810
811 test_stripflags(){
812     log test_stripflags "$@"
813     # call check_cc to get a fresh TMPO
814     check_cc <<EOF
815 int main(void) { return 0; }
816 EOF
817     check_cmd $strip $STRIPFLAGS "$@" $TMPO
818 }
819
820 check_stripflags(){
821     log check_stripflags "$@"
822     test_stripflags "$@" && add_stripflags "$@"
823 }
824
825 check_header(){
826     log check_header "$@"
827     header=$1
828     shift
829     disable_safe $header
830     check_cpp "$@" <<EOF && enable_safe $header
831 #include <$header>
832 int x;
833 EOF
834 }
835
836 check_func(){
837     log check_func "$@"
838     func=$1
839     shift
840     disable $func
841     check_ld "$@" <<EOF && enable $func
842 extern int $func();
843 int main(void){ $func(); }
844 EOF
845 }
846
847 check_mathfunc(){
848     log check_mathfunc "$@"
849     func=$1
850     narg=$2
851     shift 2
852     test $narg = 2 && args="f, g" || args="f"
853     disable $func
854     check_ld "$@" <<EOF && enable $func
855 #include <math.h>
856 float foo(float f, float g) { return $func($args); }
857 int main(void){ return 0; }
858 EOF
859 }
860
861 check_func_headers(){
862     log check_func_headers "$@"
863     headers=$1
864     funcs=$2
865     shift 2
866     {
867         for hdr in $headers; do
868             echo "#include <$hdr>"
869         done
870         for func in $funcs; do
871             echo "long check_$func(void) { return (long) $func; }"
872         done
873         echo "int main(void) { return 0; }"
874     } | check_ld "$@" && enable $funcs && enable_safe $headers
875 }
876
877 check_cpp_condition(){
878     log check_cpp_condition "$@"
879     header=$1
880     condition=$2
881     shift 2
882     check_cpp "$@" <<EOF
883 #include <$header>
884 #if !($condition)
885 #error "unsatisfied condition: $condition"
886 #endif
887 EOF
888 }
889
890 check_lib(){
891     log check_lib "$@"
892     header="$1"
893     func="$2"
894     shift 2
895     check_header $header && check_func $func "$@" && add_extralibs "$@"
896 }
897
898 check_lib2(){
899     log check_lib2 "$@"
900     headers="$1"
901     funcs="$2"
902     shift 2
903     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
904 }
905
906 check_pkg_config(){
907     log check_pkg_config "$@"
908     pkg="$1"
909     headers="$2"
910     funcs="$3"
911     shift 3
912     check_cmd $pkg_config --exists --print-errors $pkg || return
913     pkg_cflags=$($pkg_config --cflags $pkg)
914     pkg_libs=$($pkg_config --libs $pkg)
915     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
916         set_safe ${pkg}_cflags $pkg_cflags   &&
917         set_safe ${pkg}_libs   $pkg_libs
918 }
919
920 check_exec(){
921     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
922 }
923
924 check_exec_crash(){
925     code=$(cat)
926
927     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
928     # are safe but may not be available everywhere.  Thus we use
929     # raise(SIGTERM) instead.  The check is run in a subshell so we
930     # can redirect the "Terminated" message from the shell.  SIGBUS
931     # is not defined by standard C so it is used conditionally.
932
933     (check_exec "$@") >> $logfile 2>&1 <<EOF
934 #include <signal.h>
935 static void sighandler(int sig){
936     raise(SIGTERM);
937 }
938 int foo(void){
939     $code
940 }
941 int (*func_ptr)(void) = foo;
942 int main(void){
943     signal(SIGILL, sighandler);
944     signal(SIGFPE, sighandler);
945     signal(SIGSEGV, sighandler);
946 #ifdef SIGBUS
947     signal(SIGBUS, sighandler);
948 #endif
949     return func_ptr();
950 }
951 EOF
952 }
953
954 check_type(){
955     log check_type "$@"
956     headers=$1
957     type=$2
958     shift 2
959     disable_safe "$type"
960     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
961 }
962
963 check_struct(){
964     log check_struct "$@"
965     headers=$1
966     struct=$2
967     member=$3
968     shift 3
969     disable_safe "${struct}_${member}"
970     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
971         enable_safe "${struct}_${member}"
972 }
973
974 check_builtin(){
975     log check_builtin "$@"
976     name=$1
977     headers=$2
978     builtin=$3
979     shift 3
980     disable "$name"
981     check_code ld "$headers" "$builtin" "$@" && enable "$name"
982 }
983
984 require(){
985     name="$1"
986     header="$2"
987     func="$3"
988     shift 3
989     check_lib $header $func "$@" || die "ERROR: $name not found"
990 }
991
992 require2(){
993     name="$1"
994     headers="$2"
995     func="$3"
996     shift 3
997     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
998 }
999
1000 require_pkg_config(){
1001     pkg="$1"
1002     check_pkg_config "$@" || die "ERROR: $pkg not found"
1003     add_cflags    $(get_safe ${pkg}_cflags)
1004     add_extralibs $(get_safe ${pkg}_libs)
1005 }
1006
1007 hostcc_e(){
1008     eval printf '%s\\n' $HOSTCC_E
1009 }
1010
1011 hostcc_o(){
1012     eval printf '%s\\n' $HOSTCC_O
1013 }
1014
1015 check_host_cc(){
1016     log check_host_cc "$@"
1017     cat > $TMPC
1018     log_file $TMPC
1019     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1020 }
1021
1022 check_host_cpp(){
1023     log check_host_cpp "$@"
1024     cat > $TMPC
1025     log_file $TMPC
1026     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1027 }
1028
1029 check_host_cppflags(){
1030     log check_host_cppflags "$@"
1031     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1032 int x;
1033 EOF
1034 }
1035
1036 check_host_cflags(){
1037     log check_host_cflags "$@"
1038     set -- $($host_cflags_filter "$@")
1039     check_host_cc "$@" <<EOF && append host_cflags "$@"
1040 int x;
1041 EOF
1042 }
1043
1044 check_host_cpp_condition(){
1045     log check_host_cpp_condition "$@"
1046     header=$1
1047     condition=$2
1048     shift 2
1049     check_host_cpp "$@" <<EOF
1050 #include <$header>
1051 #if !($condition)
1052 #error "unsatisfied condition: $condition"
1053 #endif
1054 EOF
1055 }
1056
1057 apply(){
1058     file=$1
1059     shift
1060     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1061 }
1062
1063 cp_if_changed(){
1064     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1065     mkdir -p "$(dirname $2)"
1066     $cp_f "$1" "$2"
1067 }
1068
1069 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1070 # system-dependent things.
1071
1072 COMPONENT_LIST="
1073     bsfs
1074     decoders
1075     demuxers
1076     encoders
1077     filters
1078     hwaccels
1079     indevs
1080     muxers
1081     outdevs
1082     parsers
1083     protocols
1084 "
1085
1086 EXAMPLE_LIST="
1087     output_example
1088     transcode_aac_example
1089 "
1090
1091 EXTERNAL_LIBRARY_LIST="
1092     avisynth
1093     bzlib
1094     frei0r
1095     gnutls
1096     libcdio
1097     libdc1394
1098     libfaac
1099     libfdk_aac
1100     libfreetype
1101     libgsm
1102     libilbc
1103     libmp3lame
1104     libopencore_amrnb
1105     libopencore_amrwb
1106     libopencv
1107     libopenjpeg
1108     libopus
1109     libpulse
1110     librtmp
1111     libschroedinger
1112     libspeex
1113     libtheora
1114     libvo_aacenc
1115     libvo_amrwbenc
1116     libvorbis
1117     libvpx
1118     libwavpack
1119     libx264
1120     libxavs
1121     libxvid
1122     openssl
1123     x11grab
1124     zlib
1125 "
1126
1127 HWACCEL_LIST="
1128     dxva2
1129     vaapi
1130     vda
1131     vdpau
1132 "
1133 LIBRARY_LIST="
1134     avcodec
1135     avdevice
1136     avfilter
1137     avformat
1138     avresample
1139     avutil
1140     swscale
1141 "
1142
1143 PROGRAM_LIST="
1144     avconv
1145     avplay
1146     avprobe
1147     avserver
1148 "
1149
1150 CONFIG_LIST="
1151     $COMPONENT_LIST
1152     $EXAMPLE_LIST
1153     $EXTERNAL_LIBRARY_LIST
1154     $HWACCEL_LIST
1155     $LIBRARY_LIST
1156     $PROGRAM_LIST
1157     dct
1158     doc
1159     error_resilience
1160     fft
1161     gpl
1162     gray
1163     hardcoded_tables
1164     lsp
1165     lzo
1166     mdct
1167     memalign_hack
1168     network
1169     nonfree
1170     pod2man
1171     pic
1172     rdft
1173     runtime_cpudetect
1174     safe_bitstream_reader
1175     shared
1176     small
1177     sram
1178     static
1179     swscale_alpha
1180     texi2html
1181     thumb
1182     version3
1183     xmm_clobber_test
1184 "
1185
1186 THREADS_LIST='
1187     pthreads
1188     w32threads
1189 '
1190
1191 ATOMICS_LIST='
1192     atomics_gcc
1193     atomics_suncc
1194     atomics_win32
1195 '
1196
1197 ARCH_LIST='
1198     aarch64
1199     alpha
1200     arm
1201     avr32
1202     avr32_ap
1203     avr32_uc
1204     bfin
1205     ia64
1206     m68k
1207     mips
1208     mips64
1209     parisc
1210     ppc
1211     ppc64
1212     s390
1213     sh4
1214     sparc
1215     sparc64
1216     tilegx
1217     tilepro
1218     tomi
1219     x86
1220     x86_32
1221     x86_64
1222 '
1223
1224 ARCH_EXT_LIST_ARM='
1225     armv5te
1226     armv6
1227     armv6t2
1228     neon
1229     vfp
1230     vfpv3
1231 '
1232
1233 ARCH_EXT_LIST_X86='
1234     amd3dnow
1235     amd3dnowext
1236     avx
1237     avx2
1238     fma4
1239     i686
1240     mmx
1241     mmxext
1242     sse
1243     sse2
1244     sse3
1245     sse4
1246     sse42
1247     ssse3
1248 '
1249
1250 ARCH_EXT_LIST="
1251     $ARCH_EXT_LIST_ARM
1252     $ARCH_EXT_LIST_X86
1253     altivec
1254     ppc4xx
1255     vis
1256 "
1257
1258 HAVE_LIST_CMDLINE='
1259     inline_asm
1260     symver
1261     yasm
1262 '
1263
1264 HAVE_LIST_PUB='
1265     bigendian
1266     fast_unaligned
1267 '
1268
1269 MATH_FUNCS="
1270     atanf
1271     atan2f
1272     cbrtf
1273     cosf
1274     exp2
1275     exp2f
1276     expf
1277     isinf
1278     isnan
1279     ldexpf
1280     llrint
1281     llrintf
1282     log2
1283     log2f
1284     log10f
1285     lrint
1286     lrintf
1287     powf
1288     rint
1289     round
1290     roundf
1291     sinf
1292     trunc
1293     truncf
1294 "
1295
1296 HAVE_LIST="
1297     $ARCH_EXT_LIST
1298     $(add_suffix _external $ARCH_EXT_LIST)
1299     $(add_suffix _inline   $ARCH_EXT_LIST)
1300     $HAVE_LIST_CMDLINE
1301     $HAVE_LIST_PUB
1302     $THREADS_LIST
1303     $ATOMICS_LIST
1304     $MATH_FUNCS
1305     aligned_malloc
1306     aligned_stack
1307     alsa_asoundlib_h
1308     altivec_h
1309     arpa_inet_h
1310     asm_mod_q
1311     asm_mod_y
1312     atomic_cas_ptr
1313     atomics_native
1314     attribute_may_alias
1315     attribute_packed
1316     cdio_paranoia_h
1317     cdio_paranoia_paranoia_h
1318     closesocket
1319     CommandLineToArgvW
1320     cpunop
1321     CryptGenRandom
1322     dcbzl
1323     dev_bktr_ioctl_bt848_h
1324     dev_bktr_ioctl_meteor_h
1325     dev_ic_bt8xx_h
1326     dev_video_bktr_ioctl_bt848_h
1327     dev_video_meteor_ioctl_meteor_h
1328     direct_h
1329     dlfcn_h
1330     dlopen
1331     dos_paths
1332     dxva_h
1333     ebp_available
1334     ebx_available
1335     fast_64bit
1336     fast_clz
1337     fast_cmov
1338     fcntl
1339     fork
1340     getaddrinfo
1341     gethrtime
1342     getopt
1343     GetProcessAffinityMask
1344     GetProcessMemoryInfo
1345     GetProcessTimes
1346     GetSystemTimeAsFileTime
1347     getrusage
1348     getservbyport
1349     gettimeofday
1350     gnu_as
1351     gsm_h
1352     ibm_asm
1353     inet_aton
1354     io_h
1355     inline_asm_labels
1356     isatty
1357     jack_port_get_latency_range
1358     ldbrx
1359     libc_msvcrt
1360     libdc1394_1
1361     libdc1394_2
1362     local_aligned_16
1363     local_aligned_8
1364     localtime_r
1365     loongson
1366     machine_ioctl_bt848_h
1367     machine_ioctl_meteor_h
1368     machine_rw_barrier
1369     malloc_h
1370     MapViewOfFile
1371     memalign
1372     MemoryBarrier
1373     mkstemp
1374     mm_empty
1375     mmap
1376     mprotect
1377     nanosleep
1378     poll_h
1379     posix_memalign
1380     pragma_deprecated
1381     rdtsc
1382     sched_getaffinity
1383     sdl
1384     SetConsoleTextAttribute
1385     setmode
1386     setrlimit
1387     Sleep
1388     sndio_h
1389     socklen_t
1390     soundcard_h
1391     strerror_r
1392     strptime
1393     strtok_r
1394     struct_addrinfo
1395     struct_group_source_req
1396     struct_ip_mreq_source
1397     struct_ipv6_mreq
1398     struct_pollfd
1399     struct_rusage_ru_maxrss
1400     struct_sockaddr_in6
1401     struct_sockaddr_sa_len
1402     struct_sockaddr_storage
1403     struct_v4l2_frmivalenum_discrete
1404     symver_asm_label
1405     symver_gnu_asm
1406     sync_val_compare_and_swap
1407     sysconf
1408     sysctl
1409     sys_mman_h
1410     sys_param_h
1411     sys_resource_h
1412     sys_select_h
1413     sys_soundcard_h
1414     sys_time_h
1415     sys_un_h
1416     sys_videoio_h
1417     threads
1418     unistd_h
1419     usleep
1420     vdpau_x11
1421     vfp_args
1422     VirtualAlloc
1423     windows_h
1424     winsock2_h
1425     xform_asm
1426     xlib
1427     xmm_clobbers
1428 "
1429
1430 # options emitted with CONFIG_ prefix but not available on the command line
1431 CONFIG_EXTRA="
1432     aandcttables
1433     ac3dsp
1434     audio_frame_queue
1435     dsputil
1436     gcrypt
1437     golomb
1438     gplv3
1439     h263dsp
1440     h264chroma
1441     h264dsp
1442     h264pred
1443     h264qpel
1444     hpeldsp
1445     huffman
1446     lgplv3
1447     lpc
1448     mpegaudio
1449     mpegaudiodsp
1450     mpegvideo
1451     mpegvideoenc
1452     nettle
1453     rangecoder
1454     riffdec
1455     riffenc
1456     rtpdec
1457     rtpenc_chain
1458     sinewin
1459     videodsp
1460     vp3dsp
1461 "
1462
1463 CMDLINE_SELECT="
1464     $ARCH_EXT_LIST
1465     $CONFIG_LIST
1466     $HAVE_LIST_CMDLINE
1467     $THREADS_LIST
1468     asm
1469     cross_compile
1470     debug
1471     extra_warnings
1472     logging
1473     lto
1474     optimizations
1475 "
1476
1477 PATHS_LIST='
1478     bindir
1479     datadir
1480     docdir
1481     incdir
1482     libdir
1483     mandir
1484     prefix
1485     shlibdir
1486 '
1487
1488 CMDLINE_SET="
1489     $PATHS_LIST
1490     ar
1491     arch
1492     as
1493     build_suffix
1494     cc
1495     cpu
1496     cross_prefix
1497     dep_cc
1498     extra_version
1499     host_cc
1500     host_cflags
1501     host_ld
1502     host_ldflags
1503     host_libs
1504     host_os
1505     ld
1506     logfile
1507     malloc_prefix
1508     nm
1509     optflags
1510     pkg_config
1511     random_seed
1512     samples
1513     sysinclude
1514     sysroot
1515     target_exec
1516     target_os
1517     target_path
1518     target_samples
1519     toolchain
1520 "
1521
1522 CMDLINE_APPEND="
1523     extra_cflags
1524     host_cppflags
1525 "
1526
1527 # code dependency declarations
1528
1529 # architecture extensions
1530
1531 armv5te_deps="arm"
1532 armv6_deps="arm"
1533 armv6t2_deps="arm"
1534 neon_deps="arm"
1535 vfp_deps="arm"
1536 vfpv3_deps="vfp"
1537
1538 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1539
1540 altivec_deps="ppc"
1541 ppc4xx_deps="ppc"
1542
1543 vis_deps="sparc"
1544
1545 cpunop_deps="i686"
1546 x86_64_select="i686"
1547 x86_64_suggest="fast_cmov"
1548
1549 amd3dnow_deps="mmx"
1550 amd3dnowext_deps="amd3dnow"
1551 mmx_deps="x86"
1552 mmxext_deps="mmx"
1553 sse_deps="mmxext"
1554 sse2_deps="sse"
1555 sse3_deps="sse2"
1556 ssse3_deps="sse3"
1557 sse4_deps="ssse3"
1558 sse42_deps="sse4"
1559 avx_deps="sse42"
1560 fma4_deps="avx"
1561 avx2_deps="avx"
1562
1563 mmx_external_deps="yasm"
1564 mmx_inline_deps="inline_asm"
1565 mmx_suggest="mmx_external mmx_inline"
1566
1567 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1568     eval dep=\$${ext}_deps
1569     eval ${ext}_external_deps='"${dep}_external"'
1570     eval ${ext}_inline_deps='"${dep}_inline"'
1571     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1572 done
1573
1574 aligned_stack_if_any="ppc x86"
1575 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1576 fast_clz_if_any="alpha avr32 mips ppc x86"
1577 fast_unaligned_if_any="ppc x86"
1578
1579 need_memalign="altivec neon sse"
1580
1581 # system capabilities
1582 log2_deps="!libc_msvcrt"
1583
1584 symver_if_any="symver_asm_label symver_gnu_asm"
1585
1586 # threading support
1587 atomics_gcc_if="sync_val_compare_and_swap"
1588 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1589 atomics_win32_if="MemoryBarrier"
1590 atomics_native_if_any="$ATOMICS_LIST"
1591 threads_if_any="$THREADS_LIST"
1592
1593 # subsystems
1594 dct_select="rdft"
1595 error_resilience_select="dsputil"
1596 lpc_select="dsputil"
1597 mdct_select="fft"
1598 rdft_select="fft"
1599 mpegaudio_select="mpegaudiodsp"
1600 mpegaudiodsp_select="dct"
1601 mpegvideo_select="dsputil hpeldsp videodsp"
1602 mpegvideoenc_select="mpegvideo"
1603
1604 # decoders / encoders
1605 aac_decoder_select="mdct sinewin"
1606 aac_encoder_select="audio_frame_queue mdct sinewin"
1607 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1608 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1609 ac3_encoder_select="mdct ac3dsp dsputil"
1610 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1611 aic_decoder_select="dsputil golomb"
1612 alac_encoder_select="lpc"
1613 als_decoder_select="dsputil"
1614 amrnb_decoder_select="lsp"
1615 amrwb_decoder_select="lsp"
1616 amv_decoder_select="dsputil hpeldsp"
1617 ape_decoder_select="dsputil"
1618 asv1_decoder_select="dsputil"
1619 asv1_encoder_select="dsputil"
1620 asv2_decoder_select="dsputil"
1621 asv2_encoder_select="dsputil"
1622 atrac1_decoder_select="mdct sinewin"
1623 atrac3_decoder_select="mdct"
1624 bink_decoder_select="dsputil hpeldsp"
1625 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1626 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1627 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1628 cllc_decoder_select="dsputil"
1629 comfortnoise_encoder_select="lpc"
1630 cook_decoder_select="dsputil mdct sinewin"
1631 cscd_decoder_select="lzo"
1632 cscd_decoder_suggest="zlib"
1633 dca_decoder_select="mdct"
1634 dnxhd_decoder_select="dsputil"
1635 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1636 dvvideo_decoder_select="dsputil"
1637 dvvideo_encoder_select="dsputil"
1638 dxa_decoder_deps="zlib"
1639 eac3_decoder_select="ac3_decoder"
1640 eac3_encoder_select="ac3_encoder"
1641 eamad_decoder_select="aandcttables dsputil mpegvideo"
1642 eatgq_decoder_select="aandcttables dsputil"
1643 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1644 ffv1_decoder_select="dsputil golomb rangecoder"
1645 ffv1_encoder_select="dsputil rangecoder"
1646 ffvhuff_decoder_select="dsputil"
1647 ffvhuff_encoder_select="dsputil huffman"
1648 flac_decoder_select="golomb"
1649 flac_encoder_select="dsputil golomb lpc"
1650 flashsv_decoder_deps="zlib"
1651 flashsv_encoder_deps="zlib"
1652 flashsv2_decoder_deps="zlib"
1653 flv_decoder_select="h263_decoder"
1654 flv_encoder_select="h263_encoder"
1655 fourxm_decoder_select="dsputil"
1656 fraps_decoder_select="dsputil huffman"
1657 g2m_decoder_deps="zlib"
1658 g2m_decoder_select="dsputil"
1659 h261_decoder_select="error_resilience mpegvideo"
1660 h261_encoder_select="aandcttables mpegvideoenc"
1661 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1662 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1663 h263i_decoder_select="h263_decoder"
1664 h263p_encoder_select="h263_encoder"
1665 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1666 h264_decoder_suggest="error_resilience"
1667 hevc_decoder_select="dsputil golomb videodsp"
1668 huffyuv_decoder_select="dsputil"
1669 huffyuv_encoder_select="dsputil huffman"
1670 iac_decoder_select="dsputil fft mdct sinewin"
1671 imc_decoder_select="dsputil fft mdct sinewin"
1672 indeo3_decoder_select="hpeldsp"
1673 interplay_video_decoder_select="hpeldsp"
1674 jpegls_decoder_select="dsputil golomb hpeldsp"
1675 jpegls_encoder_select="golomb"
1676 jv_decoder_select="dsputil"
1677 lagarith_decoder_select="dsputil"
1678 ljpeg_encoder_select="aandcttables mpegvideoenc"
1679 loco_decoder_select="golomb"
1680 mdec_decoder_select="dsputil error_resilience mpegvideo"
1681 metasound_decoder_select="lsp mdct sinewin"
1682 mimic_decoder_select="dsputil hpeldsp"
1683 mjpeg_decoder_select="dsputil hpeldsp"
1684 mjpegb_decoder_select="dsputil hpeldsp"
1685 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1686 mlp_decoder_select="dsputil mlp_parser"
1687 motionpixels_decoder_select="dsputil"
1688 mp1_decoder_select="mpegaudio"
1689 mp1float_decoder_select="mpegaudio"
1690 mp2_decoder_select="mpegaudio"
1691 mp2float_decoder_select="mpegaudio"
1692 mp3_decoder_select="mpegaudio"
1693 mp3adu_decoder_select="mpegaudio"
1694 mp3adufloat_decoder_select="mpegaudio"
1695 mp3float_decoder_select="mpegaudio"
1696 mp3on4_decoder_select="mpegaudio"
1697 mp3on4float_decoder_select="mpegaudio"
1698 mpc7_decoder_select="dsputil mpegaudiodsp"
1699 mpc8_decoder_select="dsputil mpegaudiodsp"
1700 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1701 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1702 mpeg1video_decoder_select="error_resilience mpegvideo"
1703 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1704 mpeg2video_decoder_select="error_resilience mpegvideo"
1705 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1706 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1707 mpeg4_encoder_select="h263_encoder"
1708 msmpeg4v1_decoder_select="h263_decoder"
1709 msmpeg4v2_decoder_select="h263_decoder"
1710 msmpeg4v2_encoder_select="h263_encoder"
1711 msmpeg4v3_decoder_select="h263_decoder"
1712 msmpeg4v3_encoder_select="h263_encoder"
1713 mss2_decoder_select="error_resilience vc1_decoder"
1714 mxpeg_decoder_select="dsputil hpeldsp"
1715 nellymoser_decoder_select="mdct sinewin"
1716 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1717 nuv_decoder_select="dsputil lzo"
1718 png_decoder_deps="zlib"
1719 png_decoder_select="dsputil"
1720 png_encoder_deps="zlib"
1721 png_encoder_select="dsputil"
1722 prores_decoder_select="dsputil"
1723 prores_encoder_select="dsputil"
1724 qcelp_decoder_select="lsp"
1725 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1726 ra_144_encoder_select="audio_frame_queue lpc"
1727 ralf_decoder_select="golomb"
1728 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1729 rv10_encoder_select="h263_encoder"
1730 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1731 rv20_encoder_select="h263_encoder"
1732 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1733 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1734 shorten_decoder_select="golomb"
1735 sipr_decoder_select="lsp"
1736 sp5x_decoder_select="dsputil hpeldsp"
1737 svq1_decoder_select="hpeldsp"
1738 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1739 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1740 svq3_decoder_suggest="error_resilience zlib"
1741 tak_decoder_select="dsputil"
1742 theora_decoder_select="vp3_decoder"
1743 tiff_decoder_suggest="zlib"
1744 tiff_encoder_suggest="zlib"
1745 thp_decoder_select="dsputil hpeldsp"
1746 truehd_decoder_select="mlp_decoder"
1747 truemotion2_decoder_select="dsputil"
1748 truespeech_decoder_select="dsputil"
1749 tscc_decoder_deps="zlib"
1750 twinvq_decoder_select="mdct lsp sinewin"
1751 utvideo_decoder_select="dsputil"
1752 utvideo_encoder_select="dsputil huffman"
1753 vble_decoder_select="dsputil"
1754 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1755 vc1image_decoder_select="vc1_decoder"
1756 vorbis_decoder_select="mdct"
1757 vorbis_encoder_select="mdct"
1758 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1759 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1760 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1761 vp6a_decoder_select="vp6_decoder"
1762 vp6f_decoder_select="vp6_decoder"
1763 vp8_decoder_select="h264pred videodsp"
1764 vp9_decoder_select="videodsp"
1765 webp_decoder_select="vp8_decoder"
1766 wmapro_decoder_select="mdct sinewin"
1767 wmav1_decoder_select="mdct sinewin"
1768 wmav1_encoder_select="mdct sinewin"
1769 wmav2_decoder_select="mdct sinewin"
1770 wmav2_encoder_select="mdct sinewin"
1771 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1772 wmv1_decoder_select="h263_decoder"
1773 wmv1_encoder_select="h263_encoder"
1774 wmv2_decoder_select="h263_decoder videodsp"
1775 wmv2_encoder_select="h263_encoder"
1776 wmv3_decoder_select="vc1_decoder"
1777 wmv3image_decoder_select="wmv3_decoder"
1778 zerocodec_decoder_deps="zlib"
1779 zlib_decoder_deps="zlib"
1780 zlib_encoder_deps="zlib"
1781 zmbv_decoder_deps="zlib"
1782 zmbv_encoder_deps="zlib"
1783
1784 # hardware accelerators
1785 dxva2_deps="dxva2api_h"
1786 vaapi_deps="va_va_h"
1787 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1788 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1789 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1790
1791 h263_vaapi_hwaccel_deps="vaapi"
1792 h263_vaapi_hwaccel_select="h263_decoder"
1793 h263_vdpau_hwaccel_deps="vdpau"
1794 h263_vdpau_hwaccel_select="h263_decoder"
1795 h264_dxva2_hwaccel_deps="dxva2"
1796 h264_dxva2_hwaccel_select="h264_decoder"
1797 h264_vaapi_hwaccel_deps="vaapi"
1798 h264_vaapi_hwaccel_select="h264_decoder"
1799 h264_vda_hwaccel_deps="vda"
1800 h264_vda_hwaccel_select="h264_decoder"
1801 h264_vdpau_hwaccel_deps="vdpau"
1802 h264_vdpau_hwaccel_select="h264_decoder"
1803 mpeg1_vdpau_hwaccel_deps="vdpau"
1804 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1805 mpeg2_dxva2_hwaccel_deps="dxva2"
1806 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1807 mpeg2_vaapi_hwaccel_deps="vaapi"
1808 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1809 mpeg2_vdpau_hwaccel_deps="vdpau"
1810 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1811 mpeg4_vaapi_hwaccel_deps="vaapi"
1812 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1813 mpeg4_vdpau_hwaccel_deps="vdpau"
1814 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1815 vc1_dxva2_hwaccel_deps="dxva2"
1816 vc1_dxva2_hwaccel_select="vc1_decoder"
1817 vc1_vaapi_hwaccel_deps="vaapi"
1818 vc1_vaapi_hwaccel_select="vc1_decoder"
1819 vc1_vdpau_hwaccel_deps="vdpau"
1820 vc1_vdpau_hwaccel_select="vc1_decoder"
1821 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1822 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1823 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1824
1825 # parsers
1826 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1827 mpeg4video_parser_select="error_resilience mpegvideo"
1828 mpegvideo_parser_select="error_resilience mpegvideo"
1829 vc1_parser_select="mpegvideo"
1830
1831 # external libraries
1832 libfaac_encoder_deps="libfaac"
1833 libfaac_encoder_select="audio_frame_queue"
1834 libfdk_aac_decoder_deps="libfdk_aac"
1835 libfdk_aac_encoder_deps="libfdk_aac"
1836 libfdk_aac_encoder_select="audio_frame_queue"
1837 libgsm_decoder_deps="libgsm"
1838 libgsm_encoder_deps="libgsm"
1839 libgsm_ms_decoder_deps="libgsm"
1840 libgsm_ms_encoder_deps="libgsm"
1841 libilbc_decoder_deps="libilbc"
1842 libilbc_encoder_deps="libilbc"
1843 libmp3lame_encoder_deps="libmp3lame"
1844 libmp3lame_encoder_select="audio_frame_queue"
1845 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1846 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1847 libopencore_amrnb_encoder_select="audio_frame_queue"
1848 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1849 libopenjpeg_decoder_deps="libopenjpeg"
1850 libopenjpeg_encoder_deps="libopenjpeg"
1851 libopus_decoder_deps="libopus"
1852 libopus_encoder_deps="libopus"
1853 libopus_encoder_select="audio_frame_queue"
1854 libschroedinger_decoder_deps="libschroedinger"
1855 libschroedinger_encoder_deps="libschroedinger"
1856 libspeex_decoder_deps="libspeex"
1857 libspeex_encoder_deps="libspeex"
1858 libspeex_encoder_select="audio_frame_queue"
1859 libtheora_encoder_deps="libtheora"
1860 libvo_aacenc_encoder_deps="libvo_aacenc"
1861 libvo_aacenc_encoder_select="audio_frame_queue"
1862 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1863 libvorbis_encoder_deps="libvorbis"
1864 libvorbis_encoder_select="audio_frame_queue"
1865 libvpx_vp8_decoder_deps="libvpx"
1866 libvpx_vp8_encoder_deps="libvpx"
1867 libvpx_vp9_decoder_deps="libvpx"
1868 libvpx_vp9_encoder_deps="libvpx"
1869 libwavpack_encoder_deps="libwavpack"
1870 libx264_encoder_deps="libx264"
1871 libxavs_encoder_deps="libxavs"
1872 libxvid_encoder_deps="libxvid"
1873
1874 # demuxers / muxers
1875 ac3_demuxer_select="ac3_parser"
1876 asf_demuxer_select="riffdec"
1877 asf_muxer_select="riffenc"
1878 asf_stream_muxer_select="asf_muxer"
1879 avi_demuxer_select="riffdec"
1880 avi_muxer_select="riffenc"
1881 avisynth_demuxer_deps="avisynth"
1882 avisynth_demuxer_select="riffdec"
1883 caf_demuxer_select="riffdec"
1884 dirac_demuxer_select="dirac_parser"
1885 dxa_demuxer_select="riffdec"
1886 eac3_demuxer_select="ac3_parser"
1887 f4v_muxer_select="mov_muxer"
1888 flac_demuxer_select="flac_parser"
1889 hds_muxer_select="flv_muxer"
1890 hls_muxer_select="mpegts_muxer"
1891 ipod_muxer_select="mov_muxer"
1892 ismv_muxer_select="mov_muxer"
1893 matroska_audio_muxer_select="matroska_muxer"
1894 matroska_demuxer_select="riffdec"
1895 matroska_demuxer_suggest="bzlib lzo zlib"
1896 matroska_muxer_select="riffenc"
1897 mmf_muxer_select="riffenc"
1898 mov_demuxer_select="riffdec"
1899 mov_demuxer_suggest="zlib"
1900 mov_muxer_select="riffenc rtpenc_chain"
1901 mp3_demuxer_select="mpegaudio_parser"
1902 mp4_muxer_select="mov_muxer"
1903 mpegts_muxer_select="adts_muxer latm_muxer"
1904 mpegtsraw_demuxer_select="mpegts_demuxer"
1905 mxf_d10_muxer_select="mxf_muxer"
1906 nut_muxer_select="riffenc"
1907 nuv_demuxer_select="riffdec"
1908 ogg_demuxer_select="golomb"
1909 psp_muxer_select="mov_muxer"
1910 rtp_demuxer_select="sdp_demuxer"
1911 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1912 rtsp_demuxer_select="http_protocol rtpdec"
1913 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1914 sap_demuxer_select="sdp_demuxer"
1915 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1916 sdp_demuxer_select="rtpdec"
1917 smoothstreaming_muxer_select="ismv_muxer"
1918 spdif_muxer_select="aac_parser"
1919 tak_demuxer_select="tak_parser"
1920 tg2_muxer_select="mov_muxer"
1921 tgp_muxer_select="mov_muxer"
1922 w64_demuxer_select="wav_demuxer"
1923 wav_demuxer_select="riffdec"
1924 wav_muxer_select="riffenc"
1925 webm_muxer_select="riffenc"
1926 wtv_demuxer_select="riffdec"
1927 xmv_demuxer_select="riffdec"
1928 xwma_demuxer_select="riffdec"
1929
1930 # indevs / outdevs
1931 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1932 alsa_outdev_deps="alsa_asoundlib_h"
1933 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1934 dv1394_indev_deps="dv1394"
1935 dv1394_indev_select="dv_demuxer"
1936 fbdev_indev_deps="linux_fb_h"
1937 jack_indev_deps="jack_jack_h pthreads"
1938 libcdio_indev_deps="libcdio"
1939 libdc1394_indev_deps="libdc1394"
1940 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1941 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1942 pulse_indev_deps="libpulse"
1943 sndio_indev_deps="sndio_h"
1944 sndio_outdev_deps="sndio_h"
1945 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1946 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1947 vfwcap_indev_extralibs="-lavicap32"
1948 x11grab_indev_deps="x11grab XShmCreateImage"
1949
1950 # protocols
1951 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1952 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1953 ffrtmpcrypt_protocol_select="tcp_protocol"
1954 ffrtmphttp_protocol_deps="!librtmp_protocol"
1955 ffrtmphttp_protocol_select="http_protocol"
1956 gopher_protocol_select="network"
1957 httpproxy_protocol_select="tcp_protocol"
1958 http_protocol_select="tcp_protocol"
1959 https_protocol_select="tls_protocol"
1960 librtmp_protocol_deps="librtmp"
1961 librtmpe_protocol_deps="librtmp"
1962 librtmps_protocol_deps="librtmp"
1963 librtmpt_protocol_deps="librtmp"
1964 librtmpte_protocol_deps="librtmp"
1965 mmsh_protocol_select="http_protocol"
1966 mmst_protocol_select="network"
1967 rtmp_protocol_deps="!librtmp_protocol"
1968 rtmp_protocol_select="tcp_protocol"
1969 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1970 rtmps_protocol_deps="!librtmp_protocol"
1971 rtmps_protocol_select="tls_protocol"
1972 rtmpt_protocol_select="ffrtmphttp_protocol"
1973 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1974 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1975 rtp_protocol_select="udp_protocol"
1976 sctp_protocol_deps="struct_sctp_event_subscribe"
1977 sctp_protocol_select="network"
1978 srtp_protocol_select="rtp_protocol"
1979 tcp_protocol_select="network"
1980 tls_protocol_deps_any="openssl gnutls"
1981 tls_protocol_select="tcp_protocol"
1982 udp_protocol_select="network"
1983 unix_protocol_deps="sys_un_h"
1984 unix_protocol_select="network"
1985
1986 # filters
1987 blackframe_filter_deps="gpl"
1988 boxblur_filter_deps="gpl"
1989 cropdetect_filter_deps="gpl"
1990 delogo_filter_deps="gpl"
1991 drawtext_filter_deps="libfreetype"
1992 frei0r_filter_deps="frei0r dlopen strtok_r"
1993 frei0r_filter_extralibs='$ldl'
1994 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1995 frei0r_src_filter_extralibs='$ldl'
1996 hqdn3d_filter_deps="gpl"
1997 interlace_filter_deps="gpl"
1998 resample_filter_deps="avresample"
1999 ocv_filter_deps="libopencv"
2000 scale_filter_deps="swscale"
2001 yadif_filter_deps="gpl"
2002
2003 # examples
2004 output_example_deps="avcodec avformat avutil swscale"
2005 transcode_aac_example_deps="avcodec avformat avresample"
2006
2007 # libraries
2008 avcodec_deps="avutil"
2009 avdevice_deps="avutil avcodec avformat"
2010 avfilter_deps="avutil"
2011 avformat_deps="avutil avcodec"
2012 avresample_deps="avutil"
2013 swscale_deps="avutil"
2014
2015 # programs
2016 avconv_deps="avcodec avfilter avformat avresample swscale"
2017 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2018                fps_filter null_filter resample_filter scale_filter
2019                setpts_filter trim_filter"
2020 avplay_deps="avcodec avformat avresample swscale sdl"
2021 avplay_select="rdft"
2022 avprobe_deps="avcodec avformat"
2023 avserver_deps="avformat fork !shared"
2024 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2025 avserver_extralibs='$ldl'
2026
2027 # documentation
2028 pod2man_deps="doc"
2029 texi2html_deps="doc"
2030
2031 # default parameters
2032
2033 logfile="config.log"
2034
2035 # installation paths
2036 prefix_default="/usr/local"
2037 bindir_default='${prefix}/bin'
2038 datadir_default='${prefix}/share/avconv'
2039 docdir_default='${prefix}/share/doc/libav'
2040 incdir_default='${prefix}/include'
2041 libdir_default='${prefix}/lib'
2042 mandir_default='${prefix}/share/man'
2043 shlibdir_default="$libdir_default"
2044
2045 # toolchain
2046 ar_default="ar"
2047 cc_default="gcc"
2048 host_cc_default="gcc"
2049 cp_f="cp -f"
2050 ln_s="ln -s -f"
2051 nm_default="nm -g"
2052 objformat="elf"
2053 pkg_config_default=pkg-config
2054 ranlib="ranlib"
2055 strip="strip"
2056 yasmexe="yasm"
2057
2058 nogas=":"
2059
2060 # machine
2061 arch_default=$(uname -m)
2062 cpu="generic"
2063
2064 # OS
2065 target_os_default=$(tolower $(uname -s))
2066 host_os=$target_os_default
2067
2068 # configurable options
2069 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2070
2071 enable asm
2072 enable debug
2073 enable doc
2074 enable optimizations
2075 enable safe_bitstream_reader
2076 enable static
2077 enable swscale_alpha
2078
2079 # By default, enable only those hwaccels that have no external dependencies.
2080 enable dxva2 vdpau
2081
2082 # build settings
2083 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2084 LIBPREF="lib"
2085 LIBSUF=".a"
2086 FULLNAME='$(NAME)$(BUILDSUF)'
2087 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2088 SLIBPREF="lib"
2089 SLIBSUF=".so"
2090 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2091 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2092 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2093 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2094 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2095 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2096
2097 asflags_filter=echo
2098 cflags_filter=echo
2099 ldflags_filter=echo
2100
2101 AS_C='-c'
2102 AS_O='-o $@'
2103 CC_C='-c'
2104 CC_E='-E -o $@'
2105 CC_O='-o $@'
2106 LD_O='-o $@'
2107 LD_LIB='-l%'
2108 LD_PATH='-L'
2109 HOSTCC_C='-c'
2110 HOSTCC_E='-E -o $@'
2111 HOSTCC_O='-o $@'
2112 HOSTLD_O='-o $@'
2113
2114 host_cflags='-O3'
2115 host_cppflags='-D_ISOC99_SOURCE'
2116 host_libs='-lm'
2117 host_cflags_filter=echo
2118 host_ldflags_filter=echo
2119
2120 target_path='$(CURDIR)'
2121
2122 # since the object filename is not given with the -MM flag, the compiler
2123 # is only able to print the basename, and we must add the path ourselves
2124 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2125 DEPFLAGS='-MM'
2126
2127 # find source path
2128 if test -f configure; then
2129     source_path=.
2130 else
2131     source_path=$(cd $(dirname "$0"); pwd)
2132     echo "$source_path" | grep -q '[[:blank:]]' &&
2133         die "Out of tree builds are impossible with whitespace in source path."
2134     test -e "$source_path/config.h" &&
2135         die "Out of tree builds are impossible with config.h in source dir."
2136 fi
2137
2138 for v in "$@"; do
2139     r=${v#*=}
2140     l=${v%"$r"}
2141     r=$(sh_quote "$r")
2142     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2143 done
2144
2145 find_things(){
2146     thing=$1
2147     pattern=$2
2148     file=$source_path/$3
2149     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2150 }
2151
2152 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2153 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2154 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2155 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2156 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2157 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2158 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2159 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2160 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2161 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2162 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2163
2164 ALL_COMPONENTS="
2165     $BSF_LIST
2166     $DECODER_LIST
2167     $DEMUXER_LIST
2168     $ENCODER_LIST
2169     $FILTER_LIST
2170     $HWACCEL_LIST
2171     $INDEV_LIST
2172     $MUXER_LIST
2173     $OUTDEV_LIST
2174     $PARSER_LIST
2175     $PROTOCOL_LIST
2176 "
2177
2178 for n in $COMPONENT_LIST; do
2179     v=$(toupper ${n%s})_LIST
2180     eval enable \$$v
2181     eval ${n}_if_any="\$$v"
2182 done
2183
2184 enable $ARCH_EXT_LIST
2185
2186 die_unknown(){
2187     echo "Unknown option \"$1\"."
2188     echo "See $0 --help for available options."
2189     exit 1
2190 }
2191
2192 print_3_columns() {
2193     cat | tr ' ' '\n' | sort | pr -r -3 -t
2194 }
2195
2196 show_list() {
2197     suffix=_$1
2198     shift
2199     echo $* | sed s/$suffix//g | print_3_columns
2200     exit 0
2201 }
2202
2203 rand_list(){
2204     IFS=', '
2205     set -- $*
2206     unset IFS
2207     for thing; do
2208         comp=${thing%:*}
2209         prob=${thing#$comp}
2210         prob=${prob#:}
2211         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2212         echo "prob ${prob:-0.5}"
2213         printf '%s\n' $comp
2214     done
2215 }
2216
2217 do_random(){
2218     action=$1
2219     shift
2220     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2221     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2222 }
2223
2224 for opt do
2225     optval="${opt#*=}"
2226     case "$opt" in
2227         --extra-ldflags=*)
2228             add_ldflags $optval
2229         ;;
2230         --extra-libs=*)
2231             add_extralibs $optval
2232         ;;
2233         --disable-devices)
2234             disable $INDEV_LIST $OUTDEV_LIST
2235         ;;
2236         --enable-debug=*)
2237             debuglevel="$optval"
2238         ;;
2239         --disable-programs)
2240             disable $PROGRAM_LIST
2241         ;;
2242         --disable-everything)
2243             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2244         ;;
2245         --disable-all)
2246             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2247             disable $LIBRARY_LIST $PROGRAM_LIST doc
2248         ;;
2249         --enable-random|--disable-random)
2250             action=${opt%%-random}
2251             do_random ${action#--} $COMPONENT_LIST
2252         ;;
2253         --enable-random=*|--disable-random=*)
2254             action=${opt%%-random=*}
2255             do_random ${action#--} $optval
2256         ;;
2257         --enable-*=*|--disable-*=*)
2258             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2259             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2260             eval list=\$$(toupper $thing)_LIST
2261             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2262             $action $(filter "$name" $list)
2263         ;;
2264         --enable-?*|--disable-?*)
2265             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2266             if is_in $option $COMPONENT_LIST; then
2267                 test $action = disable && action=unset
2268                 eval $action \$$(toupper ${option%s})_LIST
2269             elif is_in $option $CMDLINE_SELECT; then
2270                 $action $option
2271             else
2272                 die_unknown $opt
2273             fi
2274         ;;
2275         --list-*)
2276             NAME="${opt#--list-}"
2277             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2278             NAME=${NAME%s}
2279             eval show_list $NAME \$$(toupper $NAME)_LIST
2280         ;;
2281         --help|-h) show_help
2282         ;;
2283         *)
2284             optname="${opt%%=*}"
2285             optname="${optname#--}"
2286             optname=$(echo "$optname" | sed 's/-/_/g')
2287             if is_in $optname $CMDLINE_SET; then
2288                 eval $optname='$optval'
2289             elif is_in $optname $CMDLINE_APPEND; then
2290                 append $optname "$optval"
2291             else
2292                 die_unknown $opt
2293             fi
2294         ;;
2295     esac
2296 done
2297
2298 disabled logging && logfile=/dev/null
2299
2300 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2301 set >> $logfile
2302
2303 test -n "$cross_prefix" && enable cross_compile
2304
2305 if enabled cross_compile; then
2306     test -n "$arch" && test -n "$target_os" ||
2307         die "Must specify target arch and OS when cross-compiling"
2308 fi
2309
2310 ar_default="${cross_prefix}${ar_default}"
2311 cc_default="${cross_prefix}${cc_default}"
2312 nm_default="${cross_prefix}${nm_default}"
2313 pkg_config_default="${cross_prefix}${pkg_config_default}"
2314 ranlib="${cross_prefix}${ranlib}"
2315 strip="${cross_prefix}${strip}"
2316
2317 sysinclude_default="${sysroot}/usr/include"
2318
2319 case "$toolchain" in
2320     clang-asan)
2321         cc_default="clang"
2322         add_cflags  -fsanitize=address
2323         add_ldflags -fsanitize=address
2324     ;;
2325     clang-tsan)
2326         cc_default="clang"
2327         add_cflags  -fsanitize=thread -pie
2328         add_ldflags -fsanitize=thread -pie
2329     ;;
2330     gcc-asan)
2331         cc_default="gcc"
2332         add_cflags  -fsanitize=address
2333         add_ldflags -fsanitize=address
2334     ;;
2335     gcc-tsan)
2336         cc_default="gcc"
2337         add_cflags  -fsanitize=thread -pie -fPIC
2338         add_ldflags -fsanitize=thread -pie -fPIC
2339     ;;
2340     valgrind-massif)
2341         target_exec_default="valgrind"
2342         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2343     ;;
2344     valgrind-memcheck)
2345         target_exec_default="valgrind"
2346         target_exec_args="--track-origins=yes --leak-check=full"
2347     ;;
2348     msvc)
2349         # Check whether the current MSVC version needs the C99 converter.
2350         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2351         # support enough of C99 to build libav. Default to the new
2352         # behaviour if the regexp was unable to match anything, since this
2353         # successfully parses the version number of existing supported
2354         # versions that require the converter (MSVC 2010 and 2012).
2355         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2356         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2357             cc_default="cl"
2358         else
2359             cc_default="c99wrap cl"
2360         fi
2361         ld_default="link"
2362         nm_default="dumpbin -symbols"
2363         ar_default="lib"
2364         target_os_default="win32"
2365         # Use a relative path for TMPDIR. This makes sure all the
2366         # ffconf temp files are written with a relative path, avoiding
2367         # issues with msys/win32 path conversion for MSVC parameters
2368         # such as -Fo<file> or -out:<file>.
2369         TMPDIR=.
2370     ;;
2371     icl)
2372         cc_default="icl"
2373         ld_default="xilink"
2374         nm_default="dumpbin -symbols"
2375         ar_default="xilib"
2376         target_os_default="win32"
2377         TMPDIR=.
2378     ;;
2379     gcov)
2380         add_cflags  -fprofile-arcs -ftest-coverage
2381         add_ldflags -fprofile-arcs -ftest-coverage
2382     ;;
2383     hardened)
2384         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2385         add_ldflags -Wl,-z,relro -Wl,-z,now
2386     ;;
2387     ?*)
2388         die "Unknown toolchain $toolchain"
2389     ;;
2390 esac
2391
2392 set_default arch cc pkg_config sysinclude target_exec target_os
2393 enabled cross_compile || host_cc_default=$cc
2394 set_default host_cc
2395
2396 if ! $pkg_config --version >/dev/null 2>&1; then
2397     warn "$pkg_config not found, library detection may fail."
2398     pkg_config=false
2399 fi
2400
2401 exesuf() {
2402     case $1 in
2403         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2404     esac
2405 }
2406
2407 EXESUF=$(exesuf $target_os)
2408 HOSTEXESUF=$(exesuf $host_os)
2409
2410 # set temporary file name
2411 : ${TMPDIR:=$TEMPDIR}
2412 : ${TMPDIR:=$TMP}
2413 : ${TMPDIR:=/tmp}
2414
2415 if ! check_cmd mktemp -u XXXXXX; then
2416     # simple replacement for missing mktemp
2417     # NOT SAFE FOR GENERAL USE
2418     mktemp(){
2419         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2420     }
2421 fi
2422
2423 tmpfile(){
2424     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2425         (set -C; exec > $tmp) 2>/dev/null ||
2426         die "Unable to create temporary file in $TMPDIR."
2427     append TMPFILES $tmp
2428     eval $1=$tmp
2429 }
2430
2431 trap 'rm -f -- $TMPFILES' EXIT
2432
2433 tmpfile TMPASM .asm
2434 tmpfile TMPC   .c
2435 tmpfile TMPE   $EXESUF
2436 tmpfile TMPH   .h
2437 tmpfile TMPO   .o
2438 tmpfile TMPS   .S
2439 tmpfile TMPSH  .sh
2440 tmpfile TMPV   .ver
2441
2442 unset -f mktemp
2443
2444 chmod +x $TMPE
2445
2446 # make sure we can execute files in $TMPDIR
2447 cat > $TMPSH 2>> $logfile <<EOF
2448 #! /bin/sh
2449 EOF
2450 chmod +x $TMPSH >> $logfile 2>&1
2451 if ! $TMPSH >> $logfile 2>&1; then
2452     cat <<EOF
2453 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2454 variable to another directory and make sure that it is not mounted noexec.
2455 EOF
2456     die "Sanity test failed."
2457 fi
2458
2459 ccc_flags(){
2460     for flag; do
2461         case $flag in
2462             -std=c99)           echo -c99                       ;;
2463             -mcpu=*)            echo -arch ${flag#*=}           ;;
2464             -mieee)             echo -ieee                      ;;
2465             -O*|-fast)          echo $flag                      ;;
2466             -fno-math-errno)    echo -assume nomath_errno       ;;
2467             -g)                 echo -g3                        ;;
2468             -Wall)              echo -msg_enable level2         ;;
2469             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2470             -Wl,*)              echo $flag                      ;;
2471             -f*|-W*)                                            ;;
2472             *)                  echo $flag                      ;;
2473         esac
2474    done
2475 }
2476
2477 cparser_flags(){
2478     for flag; do
2479         case $flag in
2480             -Wno-switch)             echo -Wno-switch-enum ;;
2481             -Wno-format-zero-length) ;;
2482             -Wdisabled-optimization) ;;
2483             -Wno-pointer-sign)       echo -Wno-other ;;
2484             *)                       echo $flag ;;
2485         esac
2486     done
2487 }
2488
2489 msvc_common_flags(){
2490     for flag; do
2491         case $flag in
2492             # In addition to specifying certain flags under the compiler
2493             # specific filters, they must be specified here as well or else the
2494             # generic catch all at the bottom will print the original flag.
2495             -Wall)                ;;
2496             -std=c99)             ;;
2497             # Common flags
2498             -fomit-frame-pointer) ;;
2499             -g)                   echo -Z7 ;;
2500             -fno-math-errno)      ;;
2501             -fno-common)          ;;
2502             -fno-signed-zeros)    ;;
2503             -fPIC)                ;;
2504             -mthumb)              ;;
2505             -march=*)             ;;
2506             -lz)                  echo zlib.lib ;;
2507             -lavifil32)           echo vfw32.lib ;;
2508             -lavicap32)           echo vfw32.lib user32.lib ;;
2509             -l*)                  echo ${flag#-l}.lib ;;
2510             *)                    echo $flag ;;
2511         esac
2512     done
2513 }
2514
2515 msvc_flags(){
2516     msvc_common_flags "$@"
2517     for flag; do
2518         case $flag in
2519             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2520                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2521                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2522                                        -wd4273 ;;
2523         esac
2524     done
2525 }
2526
2527 icl_flags(){
2528     msvc_common_flags "$@"
2529     for flag; do
2530         case $flag in
2531             # Despite what Intel's documentation says -Wall, which is supported
2532             # on Windows, does enable remarks so disable them here.
2533             -Wall)                echo $flag -Qdiag-disable:remark ;;
2534             -std=c99)             echo -Qstd=c99 ;;
2535         esac
2536     done
2537 }
2538
2539 pgi_flags(){
2540     for flag; do
2541         case $flag in
2542             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2543             -fomit-frame-pointer) echo -Mnoframe ;;
2544             -g)                   echo -gopt ;;
2545             *)                    echo $flag ;;
2546         esac
2547     done
2548 }
2549
2550 suncc_flags(){
2551     for flag; do
2552         case $flag in
2553             -march=*|-mcpu=*)
2554                 case "${flag#*=}" in
2555                     native)                   echo -xtarget=native       ;;
2556                     v9|niagara)               echo -xarch=sparc          ;;
2557                     ultrasparc)               echo -xarch=sparcvis       ;;
2558                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2559                     i586|pentium)             echo -xchip=pentium        ;;
2560                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2561                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2562                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2563                     pentium4*)          echo -xtarget=pentium4           ;;
2564                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2565                     *-sse3)             echo -xarch=sse3                 ;;
2566                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2567                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2568                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2569                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2570                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2571                     k8|opteron|athlon64|athlon-fx)
2572                                                echo -xarch=sse2a         ;;
2573                     athlon*)                   echo -xarch=pentium_proa  ;;
2574                 esac
2575                 ;;
2576             -std=c99)             echo -xc99              ;;
2577             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2578             -fPIC)                echo -KPIC -xcode=pic32 ;;
2579             -W*,*)                echo $flag              ;;
2580             -f*-*|-W*|-mimpure-text)                      ;;
2581             -shared)              echo -G                 ;;
2582             *)                    echo $flag              ;;
2583         esac
2584     done
2585 }
2586
2587 tms470_flags(){
2588     for flag; do
2589         case $flag in
2590             -march=*|-mcpu=*)
2591                 case "${flag#*=}" in
2592                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2593                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2594                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2595                     armv6*|arm11*)          echo -mv=6   ;;
2596                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2597                                             echo -mv=5e  ;;
2598                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2599                 esac
2600                 ;;
2601             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2602             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2603             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2604             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2605             -msoft-float)   echo --float_support=vfplib       ;;
2606             -O[0-3]|-mf=*)  echo $flag                        ;;
2607             -g)             echo -g -mn                       ;;
2608             -pds=*)         echo $flag                        ;;
2609             -D*|-I*)        echo $flag                        ;;
2610             --gcc|--abi=*)  echo $flag                        ;;
2611             -me)            echo $flag                        ;;
2612         esac
2613     done
2614 }
2615
2616 probe_cc(){
2617     pfx=$1
2618     _cc=$2
2619
2620     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2621     unset _ld_o _ldflags _ld_lib _ld_path
2622     unset _depflags _DEPCMD _DEPFLAGS
2623     _flags_filter=echo
2624
2625     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2626         _type=llvm_gcc
2627         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2628         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2629         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2630         _cflags_speed='-O3'
2631         _cflags_size='-Os'
2632     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2633         _type=gcc
2634         gcc_version=$($_cc --version | head -n1)
2635         gcc_basever=$($_cc -dumpversion)
2636         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2637         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2638         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2639         if ! $_cc -dumpversion | grep -q '^2\.'; then
2640             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2641         fi
2642         _cflags_speed='-O3'
2643         _cflags_size='-Os'
2644     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2645         _type=icc
2646         _ident=$($_cc --version | head -n1)
2647         _depflags='-MMD'
2648         _cflags_speed='-O3'
2649         _cflags_size='-Os'
2650         _cflags_noopt='-O1'
2651     elif $_cc -v 2>&1 | grep -q xlc; then
2652         _type=xlc
2653         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2654         _cflags_speed='-O5'
2655         _cflags_size='-O5 -qcompact'
2656     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2657         _type=ccc
2658         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2659         _DEPFLAGS='-M'
2660         _cflags_speed='-fast'
2661         _cflags_size='-O1'
2662         _flags_filter=ccc_flags
2663     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2664         test -d "$sysroot" || die "No valid sysroot specified."
2665         _type=armcc
2666         _ident=$($_cc --vsn | head -n1)
2667         armcc_conf="$PWD/armcc.conf"
2668         $_cc --arm_linux_configure                 \
2669              --arm_linux_config_file="$armcc_conf" \
2670              --configure_sysroot="$sysroot"        \
2671              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2672              die "Error creating armcc configuration file."
2673         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2674         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2675         as_default="${cross_prefix}gcc"
2676         _depflags='-MMD'
2677         _cflags_speed='-O3'
2678         _cflags_size='-Os'
2679     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2680         _type=tms470
2681         _ident=$($_cc -version | head -n1 | tr -s ' ')
2682         _flags='--gcc --abi=eabi -me'
2683         _cc_e='-ppl -fe=$@'
2684         _cc_o='-fe=$@'
2685         _depflags='-ppa -ppd=$(@:.o=.d)'
2686         _cflags_speed='-O3 -mf=5'
2687         _cflags_size='-O3 -mf=2'
2688         _flags_filter=tms470_flags
2689     elif $_cc -v 2>&1 | grep -q clang; then
2690         _type=clang
2691         _ident=$($_cc --version | head -n1)
2692         _depflags='-MMD'
2693         _cflags_speed='-O3'
2694         _cflags_size='-Os'
2695     elif $_cc -V 2>&1 | grep -q Sun; then
2696         _type=suncc
2697         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2698         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2699         _DEPFLAGS='-xM1 -xc99'
2700         _ldflags='-std=c99'
2701         _cflags_speed='-O5'
2702         _cflags_size='-O5 -xspace'
2703         _flags_filter=suncc_flags
2704     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2705         _type=pathscale
2706         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2707         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2708         _cflags_speed='-O2'
2709         _cflags_size='-Os'
2710         _flags_filter='filter_out -Wdisabled-optimization'
2711     elif $_cc -v 2>&1 | grep -q Open64; then
2712         _type=open64
2713         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2714         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2715         _cflags_speed='-O2'
2716         _cflags_size='-Os'
2717         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2718     elif $_cc -V 2>&1 | grep -q Portland; then
2719         _type=pgi
2720         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2721         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2722         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2723         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2724         _cflags_noopt="-O1"
2725         _flags_filter=pgi_flags
2726     elif $_cc 2>&1 | grep -q Microsoft; then
2727         _type=msvc
2728         _ident=$($cc 2>&1 | head -n1)
2729         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2730         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2731         _cflags_speed="-O2"
2732         _cflags_size="-O1"
2733         if $_cc 2>&1 | grep -q Linker; then
2734             _ld_o='-out:$@'
2735         else
2736             _ld_o='-Fe$@'
2737         fi
2738         _cc_o='-Fo$@'
2739         _cc_e='-P -Fi$@'
2740         _flags_filter=msvc_flags
2741         _ld_lib='lib%.a'
2742         _ld_path='-libpath:'
2743         _flags='-nologo'
2744         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2745         if [ $pfx = hostcc ]; then
2746             append _cflags -Dsnprintf=_snprintf
2747         fi
2748     elif $_cc 2>&1 | grep -q Intel; then
2749         _type=icl
2750         _ident=$($cc 2>&1 | head -n1)
2751         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2752         # Not only is O3 broken on 13.x+ but it is slower on all previous
2753         # versions (tested) as well.
2754         _cflags_speed="-O2"
2755         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2756         if $_cc 2>&1 | grep -q Linker; then
2757             _ld_o='-out:$@'
2758         else
2759             _ld_o='-Fe$@'
2760         fi
2761         _cc_o='-Fo$@'
2762         _cc_e='-P'
2763         _flags_filter=icl_flags
2764         _ld_lib='lib%.a'
2765         _ld_path='-libpath:'
2766         # -Qdiag-error to make icl error when seeing certain unknown arguments
2767         _flags='-nologo -Qdiag-error:4044,10157'
2768         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2769         # with MSVC which enables it by default.
2770         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2771         if [ $pfx = hostcc ]; then
2772             append _cflags -Dsnprintf=_snprintf
2773         fi
2774     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2775         _type=cparser
2776         _ident=$($_cc --version | head -n1)
2777         _depflags='-MMD'
2778         _cflags_speed='-O4'
2779         _cflags_size='-O2'
2780         _flags_filter=cparser_flags
2781     fi
2782
2783     eval ${pfx}_type=\$_type
2784     eval ${pfx}_ident=\$_ident
2785 }
2786
2787 set_ccvars(){
2788     eval ${1}_C=\${_cc_c-\${${1}_C}}
2789     eval ${1}_E=\${_cc_e-\${${1}_E}}
2790     eval ${1}_O=\${_cc_o-\${${1}_O}}
2791
2792     if [ -n "$_depflags" ]; then
2793         eval ${1}_DEPFLAGS=\$_depflags
2794     else
2795         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2796         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2797         eval DEP${1}FLAGS=\$_flags
2798     fi
2799 }
2800
2801 probe_cc cc "$cc"
2802 cflags_filter=$_flags_filter
2803 cflags_speed=$_cflags_speed
2804 cflags_size=$_cflags_size
2805 cflags_noopt=$_cflags_noopt
2806 add_cflags $_flags $_cflags
2807 cc_ldflags=$_ldflags
2808 set_ccvars CC
2809
2810 probe_cc hostcc "$host_cc"
2811 host_cflags_filter=$_flags_filter
2812 add_host_cflags  $_flags $_cflags
2813 set_ccvars HOSTCC
2814
2815 test -n "$cc_type" && enable $cc_type ||
2816     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2817
2818 : ${as_default:=$cc}
2819 : ${dep_cc_default:=$cc}
2820 : ${ld_default:=$cc}
2821 : ${host_ld_default:=$host_cc}
2822 set_default ar as dep_cc ld host_ld
2823
2824 probe_cc as "$as"
2825 asflags_filter=$_flags_filter
2826 add_asflags $_flags $_cflags
2827 set_ccvars AS
2828
2829 probe_cc ld "$ld"
2830 ldflags_filter=$_flags_filter
2831 add_ldflags $_flags $_ldflags
2832 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2833 LD_O=${_ld_o-$LD_O}
2834 LD_LIB=${_ld_lib-$LD_LIB}
2835 LD_PATH=${_ld_path-$LD_PATH}
2836
2837 probe_cc hostld "$host_ld"
2838 host_ldflags_filter=$_flags_filter
2839 add_host_ldflags $_flags $_ldflags
2840 HOSTLD_O=${_ld_o-$HOSTLD_O}
2841
2842 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2843     probe_cc depcc "$dep_cc"
2844     CCDEP=${_DEPCMD:-$DEPCMD}
2845     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2846     DEPCCFLAGS=$_flags
2847 fi
2848
2849 if $ar 2>&1 | grep -q Microsoft; then
2850     arflags="-nologo"
2851     ar_o='-out:$@'
2852 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2853     arflags="rq"
2854     ar_o='$@'
2855 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2856     arflags='-Xany -r -c'
2857     ar_o='$@'
2858 else
2859     arflags="rc"
2860     ar_o='$@'
2861 fi
2862
2863 add_cflags $extra_cflags
2864 add_asflags $extra_cflags
2865
2866 if test -n "$sysroot"; then
2867     case "$cc_type" in
2868         gcc|llvm_gcc|clang)
2869             add_cppflags --sysroot="$sysroot"
2870             add_ldflags --sysroot="$sysroot"
2871         ;;
2872         tms470)
2873             add_cppflags -I"$sysinclude"
2874             add_ldflags  --sysroot="$sysroot"
2875         ;;
2876     esac
2877 fi
2878
2879 if test "$cpu" = host; then
2880     enabled cross_compile &&
2881         die "--cpu=host makes no sense when cross-compiling."
2882
2883     case "$cc_type" in
2884         gcc|llvm_gcc)
2885             check_native(){
2886                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2887                 sed -n "/cc1.*$1=/{
2888                             s/.*$1=\\([^ ]*\\).*/\\1/
2889                             p
2890                             q
2891                         }" $TMPE
2892             }
2893             cpu=$(check_native -march || check_native -mcpu)
2894         ;;
2895     esac
2896
2897     test "${cpu:-host}" = host &&
2898         die "--cpu=host not supported with compiler $cc"
2899 fi
2900
2901 # Deal with common $arch aliases
2902 case "$arch" in
2903     aarch64|arm64)
2904         arch="aarch64"
2905     ;;
2906     arm*)
2907         arch="arm"
2908     ;;
2909     mips*|IP*)
2910         arch="mips"
2911     ;;
2912     parisc*|hppa*)
2913         arch="parisc"
2914     ;;
2915     "Power Macintosh"|ppc*|powerpc*)
2916         arch="ppc"
2917     ;;
2918     s390|s390x)
2919         arch="s390"
2920     ;;
2921     sh4|sh)
2922         arch="sh4"
2923     ;;
2924     sun4u|sparc*)
2925         arch="sparc"
2926     ;;
2927     tilegx|tile-gx)
2928         arch="tilegx"
2929     ;;
2930     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2931         arch="x86"
2932     ;;
2933 esac
2934
2935 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2936 enable $arch
2937
2938 # Add processor-specific flags
2939 if enabled aarch64; then
2940
2941     case $cpu in
2942         armv*)
2943             cpuflags="-march=$cpu"
2944         ;;
2945         *)
2946             cpuflags="-mcpu=$cpu"
2947         ;;
2948     esac
2949
2950 elif enabled alpha; then
2951
2952     cpuflags="-mcpu=$cpu"
2953
2954 elif enabled arm; then
2955
2956     check_arm_arch() {
2957         check_cpp_condition stddef.h \
2958             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2959             $cpuflags
2960     }
2961
2962     probe_arm_arch() {
2963         if   check_arm_arch 4;        then echo armv4;
2964         elif check_arm_arch 4T;       then echo armv4t;
2965         elif check_arm_arch 5;        then echo armv5;
2966         elif check_arm_arch 5E;       then echo armv5e;
2967         elif check_arm_arch 5T;       then echo armv5t;
2968         elif check_arm_arch 5TE;      then echo armv5te;
2969         elif check_arm_arch 5TEJ;     then echo armv5te;
2970         elif check_arm_arch 6;        then echo armv6;
2971         elif check_arm_arch 6J;       then echo armv6j;
2972         elif check_arm_arch 6K;       then echo armv6k;
2973         elif check_arm_arch 6Z;       then echo armv6z;
2974         elif check_arm_arch 6ZK;      then echo armv6zk;
2975         elif check_arm_arch 6T2;      then echo armv6t2;
2976         elif check_arm_arch 7;        then echo armv7;
2977         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2978         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2979         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2980         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2981         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2982         fi
2983     }
2984
2985     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2986
2987     case $cpu in
2988         armv*)
2989             cpuflags="-march=$cpu"
2990             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2991         ;;
2992         *)
2993             cpuflags="-mcpu=$cpu"
2994             case $cpu in
2995                 cortex-a*)                               subarch=armv7a  ;;
2996                 cortex-r*)                               subarch=armv7r  ;;
2997                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2998                 arm11*)                                  subarch=armv6   ;;
2999                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3000                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3001                 *)                             subarch=$(probe_arm_arch) ;;
3002             esac
3003         ;;
3004     esac
3005
3006     case "$subarch" in
3007         armv5t*)    enable fast_clz                ;;
3008         armv[6-8]*) enable fast_clz fast_unaligned ;;
3009     esac
3010
3011 elif enabled avr32; then
3012
3013     case $cpu in
3014         ap7[02]0[0-2])
3015             subarch="avr32_ap"
3016             cpuflags="-mpart=$cpu"
3017         ;;
3018         ap)
3019             subarch="avr32_ap"
3020             cpuflags="-march=$cpu"
3021         ;;
3022         uc3[ab]*)
3023             subarch="avr32_uc"
3024             cpuflags="-mcpu=$cpu"
3025         ;;
3026         uc)
3027             subarch="avr32_uc"
3028             cpuflags="-march=$cpu"
3029         ;;
3030     esac
3031
3032 elif enabled bfin; then
3033
3034     cpuflags="-mcpu=$cpu"
3035
3036 elif enabled mips; then
3037
3038     cpuflags="-march=$cpu"
3039
3040 elif enabled ppc; then
3041
3042     case $(tolower $cpu) in
3043         601|ppc601|powerpc601)
3044             cpuflags="-mcpu=601"
3045             disable altivec
3046         ;;
3047         603*|ppc603*|powerpc603*)
3048             cpuflags="-mcpu=603"
3049             disable altivec
3050         ;;
3051         604*|ppc604*|powerpc604*)
3052             cpuflags="-mcpu=604"
3053             disable altivec
3054         ;;
3055         g3|75*|ppc75*|powerpc75*)
3056             cpuflags="-mcpu=750"
3057             disable altivec
3058         ;;
3059         g4|745*|ppc745*|powerpc745*)
3060             cpuflags="-mcpu=7450"
3061         ;;
3062         74*|ppc74*|powerpc74*)
3063             cpuflags="-mcpu=7400"
3064         ;;
3065         g5|970|ppc970|powerpc970)
3066             cpuflags="-mcpu=970"
3067         ;;
3068         power[3-7]*)
3069             cpuflags="-mcpu=$cpu"
3070         ;;
3071         cell)
3072             cpuflags="-mcpu=cell"
3073             enable ldbrx
3074         ;;
3075         e500mc)
3076             cpuflags="-mcpu=e500mc"
3077             disable altivec
3078         ;;
3079         e500v2)
3080             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3081             disable altivec
3082         ;;
3083         e500)
3084             cpuflags="-mcpu=8540 -mhard-float"
3085             disable altivec
3086         ;;
3087     esac
3088
3089 elif enabled sparc; then
3090
3091     case $cpu in
3092         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3093             cpuflags="-mcpu=$cpu"
3094             disable vis
3095         ;;
3096         ultrasparc*|niagara[234])
3097             cpuflags="-mcpu=$cpu"
3098         ;;
3099     esac
3100
3101 elif enabled x86; then
3102
3103     case $cpu in
3104         i[345]86|pentium)
3105             cpuflags="-march=$cpu"
3106             disable mmx
3107         ;;
3108         # targets that do NOT support nopl and conditional mov (cmov)
3109         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3110             cpuflags="-march=$cpu"
3111             disable i686
3112         ;;
3113         # targets that do support nopl and conditional mov (cmov)
3114         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3115             cpuflags="-march=$cpu"
3116             enable i686
3117             enable fast_cmov
3118         ;;
3119         # targets that do support conditional mov but on which it's slow
3120         pentium4|pentium4m|prescott|nocona)
3121             cpuflags="-march=$cpu"
3122             enable i686
3123             disable fast_cmov
3124         ;;
3125     esac
3126
3127 fi
3128
3129 if [ "$cpu" != generic ]; then
3130     add_cflags  $cpuflags
3131     add_asflags $cpuflags
3132 fi
3133
3134 # compiler sanity check
3135 check_exec <<EOF
3136 int main(void){ return 0; }
3137 EOF
3138 if test "$?" != 0; then
3139     echo "$cc is unable to create an executable file."
3140     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3141         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3142         echo "Only do this if you know what cross compiling means."
3143     fi
3144     die "C compiler test failed."
3145 fi
3146
3147 add_cppflags -D_ISOC99_SOURCE
3148 check_cflags -std=c99
3149 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3150 #include <stdlib.h>
3151 EOF
3152 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3153 #include <stdlib.h>
3154 EOF
3155
3156 check_host_cflags -std=c99
3157 check_host_cflags -Wall
3158
3159 check_64bit(){
3160     arch32=$1
3161     arch64=$2
3162     expr=$3
3163     check_code cc "" "int test[2*($expr) - 1]" &&
3164         subarch=$arch64 || subarch=$arch32
3165 }
3166
3167 case "$arch" in
3168     aarch64|alpha|ia64)
3169         spic=$shared
3170     ;;
3171     mips)
3172         check_64bit mips mips64 '_MIPS_SIM > 1'
3173         spic=$shared
3174     ;;
3175     parisc)
3176         check_64bit parisc parisc64 'sizeof(void *) > 4'
3177         spic=$shared
3178     ;;
3179     ppc)
3180         check_64bit ppc ppc64 'sizeof(void *) > 4'
3181         spic=$shared
3182     ;;
3183     sparc)
3184         check_64bit sparc sparc64 'sizeof(void *) > 4'
3185         spic=$shared
3186     ;;
3187     x86)
3188         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3189         if test "$subarch" = "x86_64"; then
3190             spic=$shared
3191         fi
3192     ;;
3193 esac
3194
3195 enable $subarch
3196 enabled spic && enable_weak pic
3197
3198 # OS specific
3199 case $target_os in
3200     aix)
3201         SHFLAGS=-shared
3202         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3203         enabled shared && add_ldflags -Wl,-brtl
3204         ;;
3205     haiku)
3206         prefix_default="/boot/common"
3207         network_extralibs="-lnetwork"
3208         host_libs=
3209         ;;
3210     sunos)
3211         SHFLAGS='-shared -Wl,-h,$$(@F)'
3212         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3213         network_extralibs="-lsocket -lnsl"
3214         # When using suncc to build, the Solaris linker will mark
3215         # an executable with each instruction set encountered by
3216         # the Solaris assembler.  As our libraries contain their own
3217         # guards for processor-specific code, instead suppress
3218         # generation of the HWCAPS ELF section on Solaris x86 only.
3219         enabled_all suncc x86 &&
3220             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3221             add_ldflags -Wl,-M,mapfile
3222         nm_default='nm -P -g'
3223         ;;
3224     netbsd)
3225         disable symver
3226         oss_indev_extralibs="-lossaudio"
3227         oss_outdev_extralibs="-lossaudio"
3228         ;;
3229     openbsd|bitrig)
3230         disable symver
3231         SHFLAGS='-shared'
3232         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3233         SLIB_INSTALL_LINKS=
3234         oss_indev_extralibs="-lossaudio"
3235         oss_outdev_extralibs="-lossaudio"
3236         ;;
3237     dragonfly)
3238         disable symver
3239         ;;
3240     freebsd)
3241         ;;
3242     bsd/os)
3243         add_extralibs -lpoll -lgnugetopt
3244         ;;
3245     darwin)
3246         gas="gas-preprocessor.pl $cc"
3247         enabled ppc && add_asflags -force_cpusubtype_ALL
3248         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3249         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3250         add_ldflags -Wl,-dynamic,-search_paths_first
3251         SLIBSUF=".dylib"
3252         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3253         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3254         objformat="macho"
3255         enabled x86_64 && objformat="macho64"
3256         enabled_any pic shared ||
3257             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3258         ;;
3259     mingw32*)
3260         if test $target_os = "mingw32ce"; then
3261             disable network
3262         else
3263             target_os=mingw32
3264         fi
3265         LIBTARGET=i386
3266         if enabled x86_64; then
3267             LIBTARGET="i386:x86-64"
3268         elif enabled arm; then
3269             LIBTARGET=arm-wince
3270         fi
3271         check_ldflags -Wl,--nxcompat
3272         check_ldflags -Wl,--dynamicbase
3273         shlibdir_default="$bindir_default"
3274         SLIBPREF=""
3275         SLIBSUF=".dll"
3276         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3277         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3278         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3279         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3280         SLIB_INSTALL_LINKS=
3281         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3282         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3283         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3284         objformat="win32"
3285         dlltool="${cross_prefix}dlltool"
3286         ranlib=:
3287         enable dos_paths
3288         ;;
3289     win32|win64)
3290         disable symver
3291         if enabled shared; then
3292             # Link to the import library instead of the normal static library
3293             # for shared libs.
3294             LD_LIB='%.lib'
3295             # Cannot build both shared and static libs with MSVC or icl.
3296             disable static
3297         fi
3298         shlibdir_default="$bindir_default"
3299         SLIBPREF=""
3300         SLIBSUF=".dll"
3301         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3302         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3303         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3304         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3305         SLIB_INSTALL_LINKS=
3306         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3307         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3308         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3309         objformat="win32"
3310         ranlib=:
3311         enable dos_paths
3312         ;;
3313     cygwin*)
3314         target_os=cygwin
3315         shlibdir_default="$bindir_default"
3316         SLIBPREF="cyg"
3317         SLIBSUF=".dll"
3318         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3319         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3320         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3321         SLIB_INSTALL_LINKS=
3322         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3323         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3324         objformat="win32"
3325         enable dos_paths
3326         ;;
3327     *-dos|freedos|opendos)
3328         network_extralibs="-lsocket"
3329         objformat="coff"
3330         enable dos_paths
3331         add_cppflags -U__STRICT_ANSI__
3332         ;;
3333     linux)
3334         enable dv1394
3335         ;;
3336     irix*)
3337         target_os=irix
3338         ranlib="echo ignoring ranlib"
3339         ;;
3340     os/2*)
3341         ln_s="cp -f"
3342         objformat="aout"
3343         add_cppflags -D_GNU_SOURCE
3344         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3345         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3346         LIBSUF="_s.a"
3347         SLIBPREF=""
3348         SLIBSUF=".dll"
3349         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3350         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3351         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3352             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3353             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3354             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3355             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3356             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3357         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3358             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3359         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3360         enable dos_paths
3361         ;;
3362     gnu/kfreebsd)
3363         add_cppflags -D_BSD_SOURCE
3364         ;;
3365     gnu)
3366         ;;
3367     qnx)
3368         add_cppflags -D_QNX_SOURCE
3369         network_extralibs="-lsocket"
3370         ;;
3371     symbian)
3372         SLIBSUF=".dll"
3373         enable dos_paths
3374         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3375         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3376         add_ldflags -Wl,--target1-abs,--no-undefined \
3377                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3378                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3379         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3380                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3381                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3382         ;;
3383     osf1)
3384         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3385         ;;
3386     minix)
3387         ;;
3388     plan9)
3389         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3390                      -D_REENTRANT_SOURCE        \
3391                      -D_RESEARCH_SOURCE         \
3392                      -DFD_SETSIZE=96            \
3393                      -DHAVE_SOCK_OPTS
3394         add_compat strtod.o strtod=avpriv_strtod
3395         network_extralibs='-lbsd'
3396         exeobjs=compat/plan9/main.o
3397         disable avserver
3398         cp_f='cp'
3399         ;;
3400     none)
3401         ;;
3402     *)
3403         die "Unknown OS '$target_os'."
3404         ;;
3405 esac
3406
3407 # determine libc flavour
3408
3409 probe_libc(){
3410     pfx=$1
3411     pfx_no_=${pfx%_}
3412     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3413     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3414         eval ${pfx}libc_type=uclibc
3415         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3416     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3417         eval ${pfx}libc_type=glibc
3418         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3419     # MinGW headers can be installed on Cygwin, so check for newlib first.
3420     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3421         eval ${pfx}libc_type=newlib
3422         add_${pfx}cppflags -U__STRICT_ANSI__
3423     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3424     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3425         eval ${pfx}libc_type=mingw64
3426         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3427         eval test \$${pfx_no_}cc_type = "gcc" &&
3428             add_${pfx}cppflags -D__printf__=__gnu_printf__
3429     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3430          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3431         eval ${pfx}libc_type=mingw32
3432         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3433             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3434             die "ERROR: MinGW32 runtime version must be >= 3.15."
3435         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3436         eval test \$${pfx_no_}cc_type = "gcc" &&
3437             add_${pfx}cppflags -D__printf__=__gnu_printf__
3438     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3439         eval ${pfx}libc_type=msvcrt
3440         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3441         # 0x601 by default unless something else is set by the user.
3442         # This can easily lead to us detecting functions only present
3443         # in such new versions and producing binaries requiring windows 7.0.
3444         # Therefore explicitly set the default to XP unless the user has
3445         # set something else on the command line.
3446         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3447             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3448     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3449         eval ${pfx}libc_type=klibc
3450     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3451         eval ${pfx}libc_type=bionic
3452     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3453         eval ${pfx}libc_type=solaris
3454         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3455     fi
3456 }
3457
3458 probe_libc
3459 test -n "$libc_type" && enable libc_$libc_type
3460 probe_libc host_
3461 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3462
3463 case $libc_type in
3464     bionic)
3465         add_compat strtod.o strtod=avpriv_strtod
3466         ;;
3467     msvcrt)
3468         add_compat strtod.o strtod=avpriv_strtod
3469         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3470                                      _snprintf=avpriv_snprintf  \
3471                                      vsnprintf=avpriv_vsnprintf
3472         ;;
3473 esac
3474
3475 # hacks for compiler/libc/os combinations
3476
3477 if enabled_all tms470 libc_glibc; then
3478     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3479     add_cppflags -D__USER_LABEL_PREFIX__=
3480     add_cppflags -D__builtin_memset=memset
3481     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3482     add_cflags   -pds=48    # incompatible redefinition of macro
3483 fi
3484
3485 if enabled_all ccc libc_glibc; then
3486     add_ldflags -Wl,-z,now  # calls to libots crash without this
3487 fi
3488
3489 esc(){
3490     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3491 }
3492
3493 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3494
3495 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3496
3497 set_default $PATHS_LIST
3498 set_default nm
3499
3500 # we need to build at least one lib type
3501 if ! enabled_any static shared; then
3502     cat <<EOF
3503 At least one library type must be built.
3504 Specify --enable-static to build the static libraries or --enable-shared to
3505 build the shared libraries as well. To only build the shared libraries specify
3506 --disable-static in addition to --enable-shared.
3507 EOF
3508     exit 1;
3509 fi
3510
3511 die_license_disabled() {
3512     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3513 }
3514
3515 die_license_disabled gpl libcdio
3516 die_license_disabled gpl libx264
3517 die_license_disabled gpl libxavs
3518 die_license_disabled gpl libxvid
3519 die_license_disabled gpl x11grab
3520
3521 die_license_disabled nonfree libfaac
3522 die_license_disabled nonfree libfdk_aac
3523 die_license_disabled nonfree openssl
3524
3525 die_license_disabled version3 libopencore_amrnb
3526 die_license_disabled version3 libopencore_amrwb
3527 die_license_disabled version3 libvo_aacenc
3528 die_license_disabled version3 libvo_amrwbenc
3529
3530 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3531
3532 disabled optimizations || check_cflags -fomit-frame-pointer
3533
3534 enable_weak_pic() {
3535     disabled pic && return
3536     enable pic
3537     add_cppflags -DPIC
3538     case "$target_os" in
3539     mingw*|cygwin*)
3540         ;;
3541     *)
3542         add_cflags -fPIC
3543         ;;
3544     esac
3545     add_asflags  -fPIC
3546 }
3547
3548 enabled pic && enable_weak_pic
3549
3550 check_cc <<EOF || die "Symbol mangling check failed."
3551 int ff_extern;
3552 EOF
3553 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3554 extern_prefix=${sym%%ff_extern*}
3555
3556 check_cc <<EOF && enable_weak inline_asm
3557 void foo(void) { __asm__ volatile ("" ::); }
3558 EOF
3559
3560 _restrict=
3561 for restrict_keyword in restrict __restrict__ __restrict; do
3562     check_cc <<EOF && _restrict=$restrict_keyword && break
3563 void foo(char * $restrict_keyword p);
3564 EOF
3565 done
3566
3567 check_cc <<EOF && enable pragma_deprecated
3568 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3569 EOF
3570
3571 check_cc <<EOF && enable attribute_packed
3572 struct { int x; } __attribute__((packed)) x;
3573 EOF
3574
3575 check_cc <<EOF && enable attribute_may_alias
3576 union { int x; } __attribute__((may_alias)) x;
3577 EOF
3578
3579 check_cc <<EOF || die "endian test failed"
3580 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3581 EOF
3582 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3583
3584 check_inline_asm inline_asm_labels '"1:\n"'
3585
3586 if enabled alpha; then
3587
3588     check_cflags -mieee
3589
3590 elif enabled arm; then
3591
3592     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3593     enabled thumb && check_cflags -mthumb || check_cflags -marm
3594     nogas=die
3595
3596     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3597         enable vfp_args
3598     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3599         case "${cross_prefix:-$cc}" in
3600             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3601             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3602 __asm__ (".eabi_attribute 28, 1");
3603 int main(void) { return 0; }
3604 EOF
3605         esac
3606         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3607     fi
3608
3609     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3610     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3611     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3612     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3613     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3614     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3615
3616     [ $target_os = linux ] ||
3617         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3618             $ARCH_EXT_LIST_ARM
3619
3620     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3621     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3622
3623     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3624
3625 elif enabled mips; then
3626
3627     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3628
3629 elif enabled parisc; then
3630
3631     if enabled gcc; then
3632         case $($cc -dumpversion) in
3633             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3634         esac
3635     fi
3636
3637 elif enabled ppc; then
3638
3639     enable local_aligned_8 local_aligned_16
3640
3641     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3642     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3643     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3644     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3645
3646     # AltiVec flags: The FSF version of GCC differs from the Apple version
3647     if enabled altivec; then
3648         nogas=warn
3649         check_cflags -maltivec -mabi=altivec &&
3650         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3651         check_cflags -faltivec
3652
3653         # check if our compiler supports Motorola AltiVec C API
3654         check_cc <<EOF || disable altivec
3655 $inc_altivec_h
3656 int main(void) {
3657     vector signed int v1 = (vector signed int) { 0 };
3658     vector signed int v2 = (vector signed int) { 1 };
3659     v1 = vec_add(v1, v2);
3660     return 0;
3661 }
3662 EOF
3663
3664         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3665     fi
3666
3667 elif enabled sparc; then
3668
3669     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3670
3671 elif enabled x86; then
3672
3673     check_builtin rdtsc    intrin.h   "__rdtsc()"
3674     check_builtin mm_empty mmintrin.h "_mm_empty()"
3675
3676     enable local_aligned_8 local_aligned_16
3677
3678     # check whether EBP is available on x86
3679     # As 'i' is stored on the stack, this program will crash
3680     # if the base pointer is used to access it because the
3681     # base pointer is cleared in the inline assembly code.
3682     check_exec_crash <<EOF && enable ebp_available
3683 volatile int i=0;
3684 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3685 return i;
3686 EOF
3687
3688     # check whether EBX is available on x86
3689     check_inline_asm ebx_available '""::"b"(0)' &&
3690         check_inline_asm ebx_available '"":::"%ebx"'
3691
3692     # check whether xmm clobbers are supported
3693     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3694
3695     # check whether binutils is new enough to compile SSSE3/MMXEXT
3696     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3697     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3698
3699     if ! disabled_any asm mmx yasm; then
3700         if check_cmd $yasmexe --version; then
3701             enabled x86_64 && yasm_extra="-m amd64"
3702             yasm_debug="-g dwarf2"
3703         elif check_cmd nasm -v; then
3704             yasmexe=nasm
3705             yasm_debug="-g -F dwarf"
3706             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3707         fi
3708
3709         YASMFLAGS="-f $objformat $yasm_extra"
3710         enabled pic               && append YASMFLAGS "-DPIC"
3711         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3712         case "$objformat" in
3713             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3714         esac
3715
3716         check_yasm "movbe ecx, [5]" && enable yasm ||
3717             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3718         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3719         check_yasm "CPU amdnop" && enable cpunop
3720     fi
3721
3722     case "$cpu" in
3723         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3724             disable fast_clz
3725         ;;
3726     esac
3727
3728 fi
3729
3730 if enabled asm; then
3731     as=${gas:=$as}
3732     check_as <<EOF && enable gnu_as || \
3733         $nogas "GNU assembler not found, install gas-preprocessor"
3734 .macro m n
3735 \n: .int 0
3736 .endm
3737 m x
3738 EOF
3739 fi
3740
3741 check_ldflags -Wl,--as-needed
3742
3743 if check_func dlopen; then
3744     ldl=
3745 elif check_func dlopen -ldl; then
3746     ldl=-ldl
3747 fi
3748
3749 if ! disabled network; then
3750     check_type "sys/types.h sys/socket.h" socklen_t
3751     check_type netdb.h "struct addrinfo"
3752     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3753     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3754     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3755     check_type netinet/in.h "struct sockaddr_in6"
3756     check_type poll.h "struct pollfd"
3757     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3758     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3759     check_type netinet/sctp.h "struct sctp_event_subscribe"
3760     check_func getaddrinfo $network_extralibs
3761     check_func getservbyport $network_extralibs
3762     # Prefer arpa/inet.h over winsock2
3763     if check_header arpa/inet.h ; then
3764         check_func closesocket
3765     elif check_header winsock2.h ; then
3766         check_func_headers winsock2.h closesocket -lws2 &&
3767             network_extralibs="-lws2" ||
3768         { check_func_headers winsock2.h closesocket -lws2_32 &&
3769             network_extralibs="-lws2_32"; }
3770         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3771         check_type ws2tcpip.h socklen_t
3772         check_type ws2tcpip.h "struct addrinfo"
3773         check_type ws2tcpip.h "struct group_source_req"
3774         check_type ws2tcpip.h "struct ip_mreq_source"
3775         check_type ws2tcpip.h "struct ipv6_mreq"
3776         check_type winsock2.h "struct pollfd"
3777         check_type ws2tcpip.h "struct sockaddr_in6"
3778         check_type ws2tcpip.h "struct sockaddr_storage"
3779         check_struct winsock2.h "struct sockaddr" sa_len
3780     else
3781         disable network
3782     fi
3783 fi
3784
3785 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3786 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3787
3788 check_func  fcntl
3789 check_func  fork
3790 check_func_headers stdlib.h getenv
3791 check_func  gethrtime
3792 check_func  getopt
3793 check_func  getrusage
3794 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3795 check_func  gettimeofday
3796 check_func  inet_aton $network_extralibs
3797 check_func  isatty
3798 check_func  localtime_r
3799 check_func  ${malloc_prefix}memalign            && enable memalign
3800 check_func  mkstemp
3801 check_func  mmap
3802 check_func  mprotect
3803 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3804 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3805 check_func  setrlimit
3806 check_func  strerror_r
3807 check_func  strptime
3808 check_func  strtok_r
3809 check_func  sched_getaffinity
3810 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3811 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3812 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3813 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3814 check_func  sysconf
3815 check_func  sysctl
3816 check_func  usleep
3817 check_func_headers io.h setmode
3818 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3819 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3820 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3821 check_func_headers windows.h GetProcessAffinityMask
3822 check_func_headers windows.h GetProcessTimes
3823 check_func_headers windows.h GetSystemTimeAsFileTime
3824 check_func_headers windows.h MapViewOfFile
3825 check_func_headers windows.h SetConsoleTextAttribute
3826 check_func_headers windows.h Sleep
3827 check_func_headers windows.h VirtualAlloc
3828
3829 check_header direct.h
3830 check_header dlfcn.h
3831 check_header dxva.h
3832 check_header dxva2api.h
3833 check_header io.h
3834 check_header malloc.h
3835 check_header poll.h
3836 check_header sys/mman.h
3837 check_header sys/param.h
3838 check_header sys/resource.h
3839 check_header sys/select.h
3840 check_header sys/time.h
3841 check_header sys/un.h
3842 check_header unistd.h
3843 check_header vdpau/vdpau.h
3844 check_header vdpau/vdpau_x11.h
3845 check_header VideoDecodeAcceleration/VDADecoder.h
3846 check_header windows.h
3847 check_header X11/extensions/XvMClib.h
3848
3849 if ! disabled w32threads && ! enabled pthreads; then
3850     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3851 fi
3852
3853 # check for some common methods of building with pthread support
3854 # do this before the optional library checks as some of them require pthreads
3855 if ! disabled pthreads && ! enabled w32threads; then
3856     enable pthreads
3857     if check_func pthread_join -pthread; then
3858         add_cflags -pthread
3859         add_extralibs -pthread
3860     elif check_func pthread_join -pthreads; then
3861         add_cflags -pthreads
3862         add_extralibs -pthreads
3863     elif check_func pthread_join -lpthreadGC2; then
3864         add_extralibs -lpthreadGC2
3865     elif check_lib pthread.h pthread_join -lpthread; then
3866         :
3867     elif ! check_func pthread_join; then
3868         disable pthreads
3869     fi
3870 fi
3871
3872 for thread in $THREADS_LIST; do
3873     if enabled $thread; then
3874         test -n "$thread_type" &&
3875             die "ERROR: Only one thread type must be selected." ||
3876             thread_type="$thread"
3877     fi
3878 done
3879
3880 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3881 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3882
3883 check_lib math.h sin -lm && LIBM="-lm"
3884 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3885
3886 atan2f_args=2
3887 ldexpf_args=2
3888 powf_args=2
3889
3890 for func in $MATH_FUNCS; do
3891     eval check_mathfunc $func \${${func}_args:-1}
3892 done
3893
3894 # these are off by default, so fail if requested and not available
3895 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
3896                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
3897                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
3898 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3899 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3900 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3901 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3902 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3903 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3904                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3905                                done || die "ERROR: libgsm not found"; }
3906 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3907 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3908 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3909 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3910 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3911 enabled libopenjpeg       && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3912 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3913 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3914 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3915 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3916 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3917 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3918 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3919 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3920 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3921 enabled libvpx            && {
3922     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3923                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3924     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3925                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3926     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3927     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3928 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3929 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3930                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3931                                die "ERROR: libx264 version must be >= 0.118."; }
3932 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3933 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3934 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3935                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3936                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3937                                die "ERROR: openssl not found"; }
3938
3939 if enabled gnutls; then
3940     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3941     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3942 fi
3943
3944 # libdc1394 check
3945 if enabled libdc1394; then
3946     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3947         enable libdc1394_2; } ||
3948     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3949         enable libdc1394_1; } ||
3950     die "ERROR: No version of libdc1394 found "
3951 fi
3952
3953 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3954     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3955     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3956     enable sdl
3957 fi
3958
3959 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
3960 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3961
3962 check_header linux/fb.h
3963 check_header linux/videodev2.h
3964 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3965
3966 check_header sys/videoio.h
3967
3968 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3969 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3970 # w32api 3.12 had it defined wrong
3971 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3972
3973 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3974 { check_header dev/bktr/ioctl_meteor.h &&
3975   check_header dev/bktr/ioctl_bt848.h; } ||
3976 { check_header machine/ioctl_meteor.h &&
3977   check_header machine/ioctl_bt848.h; } ||
3978 { check_header dev/video/meteor/ioctl_meteor.h &&
3979   check_header dev/video/bktr/ioctl_bt848.h; } ||
3980 check_header dev/ic/bt8xx.h
3981
3982 check_header sndio.h
3983 check_header sys/soundcard.h
3984 check_header soundcard.h
3985
3986 enabled_any alsa_indev alsa_outdev &&
3987     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3988
3989 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
3990     check_func jack_port_get_latency_range -ljack
3991
3992 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3993
3994 if enabled libcdio; then
3995     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
3996     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3997 fi
3998
3999 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4000
4001 enabled x11grab                                           &&
4002 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4003 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4004 { enabled xlib || die "ERROR: Xlib not found"; }
4005
4006 enabled vdpau &&
4007     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4008     disable vdpau
4009
4010 enabled vdpau && enabled xlib &&
4011     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4012     enable vdpau_x11
4013
4014 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4015
4016 # add some useful compiler flags if supported
4017 check_cflags -Wdeclaration-after-statement
4018 check_cflags -Wall
4019 check_cflags -Wdisabled-optimization
4020 check_cflags -Wpointer-arith
4021 check_cflags -Wredundant-decls
4022 check_cflags -Wcast-qual
4023 check_cflags -Wwrite-strings
4024 check_cflags -Wtype-limits
4025 check_cflags -Wundef
4026 check_cflags -Wmissing-prototypes
4027 check_cflags -Wstrict-prototypes
4028 enabled extra_warnings && check_cflags -Winline
4029
4030 check_disable_warning(){
4031     warning_flag=-W${1#-Wno-}
4032     test_cflags $warning_flag && add_cflags $1
4033 }
4034
4035 check_disable_warning -Wno-parentheses
4036 check_disable_warning -Wno-switch
4037 check_disable_warning -Wno-format-zero-length
4038 check_disable_warning -Wno-pointer-sign
4039
4040 # add some linker flags
4041 check_ldflags -Wl,--warn-common
4042 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4043 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4044
4045 # add some strip flags
4046 # -wN '..@*' is more selective than -x, but not available everywhere.
4047 check_strip