af_compand: replace strtok_r() with av_get_token()
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105
106 Program options:
107   --disable-programs       do not build command line programs
108   --disable-avconv         disable avconv build
109   --disable-avplay         disable avplay build
110   --disable-avprobe        disable avprobe build
111   --disable-avserver       disable avserver build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-avdevice       disable libavdevice build
116   --disable-avcodec        disable libavcodec build
117   --disable-avformat       disable libavformat build
118   --disable-avutil         disable libavutil build
119   --disable-swscale        disable libswscale build
120   --disable-avfilter       disable video filter support [no]
121   --disable-avresample     disable libavresample build [no]
122   --disable-pthreads       disable pthreads [auto]
123   --disable-w32threads     disable Win32 threads [auto]
124   --disable-network        disable network support [no]
125   --disable-dct            disable DCT code
126   --disable-error-resilience disable error resilience code
127   --disable-lsp            disable LSP code
128   --disable-lzo            disable LZO decoder code
129   --disable-mdct           disable MDCT code
130   --disable-rdft           disable RDFT code
131   --disable-fft            disable FFT code
132
133 Hardware accelerators:
134   --enable-dxva2           enable DXVA2 code
135   --enable-vaapi           enable VAAPI code
136   --enable-vda             enable VDA code
137   --enable-vdpau           enable VDPAU code
138
139 Individual component options:
140   --disable-everything     disable all components listed below
141   --disable-encoder=NAME   disable encoder NAME
142   --enable-encoder=NAME    enable encoder NAME
143   --disable-encoders       disable all encoders
144   --disable-decoder=NAME   disable decoder NAME
145   --enable-decoder=NAME    enable decoder NAME
146   --disable-decoders       disable all decoders
147   --disable-hwaccel=NAME   disable hwaccel NAME
148   --enable-hwaccel=NAME    enable hwaccel NAME
149   --disable-hwaccels       disable all hwaccels
150   --disable-muxer=NAME     disable muxer NAME
151   --enable-muxer=NAME      enable muxer NAME
152   --disable-muxers         disable all muxers
153   --disable-demuxer=NAME   disable demuxer NAME
154   --enable-demuxer=NAME    enable demuxer NAME
155   --disable-demuxers       disable all demuxers
156   --enable-parser=NAME     enable parser NAME
157   --disable-parser=NAME    disable parser NAME
158   --disable-parsers        disable all parsers
159   --enable-bsf=NAME        enable bitstream filter NAME
160   --disable-bsf=NAME       disable bitstream filter NAME
161   --disable-bsfs           disable all bitstream filters
162   --enable-protocol=NAME   enable protocol NAME
163   --disable-protocol=NAME  disable protocol NAME
164   --disable-protocols      disable all protocols
165   --enable-indev=NAME      enable input device NAME
166   --disable-indev=NAME     disable input device NAME
167   --disable-indevs         disable input devices
168   --enable-outdev=NAME     enable output device NAME
169   --disable-outdev=NAME    disable output device NAME
170   --disable-outdevs        disable output devices
171   --disable-devices        disable all devices
172   --enable-filter=NAME     enable filter NAME
173   --disable-filter=NAME    disable filter NAME
174   --disable-filters        disable all filters
175
176 External library support:
177   --enable-avisynth        enable reading of AviSynth script files [no]
178   --enable-bzlib           enable bzlib [autodetect]
179   --enable-frei0r          enable frei0r video filtering
180   --enable-gnutls          enable gnutls [no]
181   --enable-libcdio         enable audio CD grabbing with libcdio
182   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
183                            and libraw1394 [no]
184   --enable-libfaac         enable AAC encoding via libfaac [no]
185   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
186   --enable-libfreetype     enable libfreetype [no]
187   --enable-libgsm          enable GSM de/encoding via libgsm [no]
188   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
189   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
190   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
191   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
192   --enable-libopencv       enable video filtering via libopencv [no]
193   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
194   --enable-libopus         enable Opus decoding via libopus [no]
195   --enable-libpulse        enable Pulseaudio input via libpulse [no]
196   --enable-librtmp         enable RTMP[E] support via librtmp [no]
197   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
198   --enable-libspeex        enable Speex de/encoding via libspeex [no]
199   --enable-libtheora       enable Theora encoding via libtheora [no]
200   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
201   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
202   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
203   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
204   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
205   --enable-libwebp         enable WebP encoding via libwebp [no]
206   --enable-libx264         enable H.264 encoding via x264 [no]
207   --enable-libx265         enable HEVC encoding via x265 [no]
208   --enable-libxavs         enable AVS encoding via xavs [no]
209   --enable-libxvid         enable Xvid encoding via xvidcore,
210                            native MPEG-4/Xvid encoder exists [no]
211   --enable-openssl         enable openssl [no]
212   --enable-x11grab         enable X11 grabbing [no]
213   --enable-zlib            enable zlib [autodetect]
214
215 Advanced options (experts only):
216   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
217   --enable-cross-compile   assume a cross-compiler is used
218   --sysroot=PATH           root of cross-build tree
219   --sysinclude=PATH        location of cross-build system headers
220   --target-os=OS           compiler targets OS [$target_os]
221   --target-exec=CMD        command to run executables on target
222   --target-path=DIR        path to view of build directory on target
223   --target-samples=DIR     path to samples directory on target
224   --toolchain=NAME         set tool defaults according to NAME
225   --nm=NM                  use nm tool
226   --ar=AR                  use archive tool AR [$ar_default]
227   --as=AS                  use assembler AS [$as_default]
228   --cc=CC                  use C compiler CC [$cc_default]
229   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
230   --ld=LD                  use linker LD
231   --host-cc=HOSTCC         use host C compiler HOSTCC
232   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
233   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
234   --host-ld=HOSTLD         use host linker HOSTLD
235   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
236   --host-libs=HLIBS        use libs HLIBS when linking for host
237   --host-os=OS             compiler host OS [$target_os]
238   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
239   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
240   --extra-libs=ELIBS       add ELIBS [$ELIBS]
241   --extra-version=STRING   version string suffix []
242   --optflags=OPTFLAGS      override optimization-related compiler flags
243   --build-suffix=SUFFIX    library name suffix []
244   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
245   --arch=ARCH              select architecture [$arch]
246   --cpu=CPU                select the minimum required CPU (affects
247                            instruction selection, may crash on older CPUs)
248   --enable-pic             build position-independent code
249   --enable-sram            allow use of on-chip SRAM
250   --enable-thumb           compile for Thumb instruction set
251   --disable-symver         disable symbol versioning
252   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
253   --disable-safe-bitstream-reader
254                            disable buffer boundary checking in bitreaders
255                            (faster, but may crash)
256   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
257   --enable-lto             use link-time optimization
258
259 Optimization options (experts only):
260   --disable-asm            disable all assembler optimizations
261   --disable-altivec        disable AltiVec optimizations
262   --disable-amd3dnow       disable 3DNow! optimizations
263   --disable-amd3dnowext    disable 3DNow! extended optimizations
264   --disable-mmx            disable MMX optimizations
265   --disable-mmxext         disable MMXEXT optimizations
266   --disable-sse            disable SSE optimizations
267   --disable-sse2           disable SSE2 optimizations
268   --disable-sse3           disable SSE3 optimizations
269   --disable-ssse3          disable SSSE3 optimizations
270   --disable-sse4           disable SSE4 optimizations
271   --disable-sse42          disable SSE4.2 optimizations
272   --disable-avx            disable AVX optimizations
273   --disable-xop            disable XOP optimizations
274   --disable-fma3           disable FMA3 optimizations
275   --disable-fma4           disable FMA4 optimizations
276   --disable-avx2           disable AVX2 optimizations
277   --disable-armv5te        disable armv5te optimizations
278   --disable-armv6          disable armv6 optimizations
279   --disable-armv6t2        disable armv6t2 optimizations
280   --disable-vfp            disable VFP optimizations
281   --disable-neon           disable NEON optimizations
282   --disable-vis            disable VIS optimizations
283   --disable-inline-asm     disable use of inline assembler
284   --disable-yasm           disable use of yasm assembler
285
286 Developer options (useful when working on Libav itself):
287   --disable-debug          disable debugging symbols
288   --enable-debug=LEVEL     set the debug level [$debuglevel]
289   --disable-optimizations  disable compiler optimizations
290   --enable-extra-warnings  enable more compiler warnings
291   --samples=PATH           location of test samples for FATE, if not set use
292                            \$LIBAV_SAMPLES at make invocation time.
293   --enable-neon-clobber-test check NEON registers for clobbering (should be
294                            used only for debugging purposes)
295   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
296                            should be used only for debugging purposes)
297   --enable-random          randomly enable/disable components
298   --disable-random
299   --enable-random=LIST     randomly enable/disable specific components or
300   --disable-random=LIST    component groups. LIST is a comma-separated list
301                            of NAME[:PROB] entries where NAME is a component
302                            (group) and PROB the probability associated with
303                            NAME (default 0.5).
304   --random-seed=VALUE      seed value for --enable/disable-random
305
306 NOTE: Object files are built at the place where configure is launched.
307 EOF
308   exit 0
309 }
310
311 quotes='""'
312
313 log(){
314     echo "$@" >> $logfile
315 }
316
317 log_file(){
318     log BEGIN $1
319     pr -n -t $1 >> $logfile
320     log END $1
321 }
322
323 echolog(){
324     log "$@"
325     echo "$@"
326 }
327
328 warn(){
329     log "WARNING: $*"
330     WARNINGS="${WARNINGS}WARNING: $*\n"
331 }
332
333 die(){
334     echolog "$@"
335     cat <<EOF
336
337 If you think configure made a mistake, make sure you are using the latest
338 version from Git.  If the latest version fails, report the problem to the
339 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
340 EOF
341     if disabled logging; then
342         cat <<EOF
343 Rerun configure with logging enabled (do not use --disable-logging), and
344 include the log this produces with your report.
345 EOF
346     else
347         cat <<EOF
348 Include the log file "$logfile" produced by configure as this will help
349 solving the problem.
350 EOF
351     fi
352     exit 1
353 }
354
355 # Avoid locale weirdness, besides we really just want to translate ASCII.
356 toupper(){
357     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
358 }
359
360 tolower(){
361     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
362 }
363
364 c_escape(){
365     echo "$*" | sed 's/["\\]/\\\0/g'
366 }
367
368 sh_quote(){
369     v=$(echo "$1" | sed "s/'/'\\\\''/g")
370     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
371     echo "$v"
372 }
373
374 cleanws(){
375     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
376 }
377
378 filter(){
379     pat=$1
380     shift
381     for v; do
382         eval "case $v in $pat) echo $v ;; esac"
383     done
384 }
385
386 filter_out(){
387     pat=$1
388     shift
389     for v; do
390         eval "case $v in $pat) ;; *) echo $v ;; esac"
391     done
392 }
393
394 map(){
395     m=$1
396     shift
397     for v; do eval $m; done
398 }
399
400 add_suffix(){
401     suffix=$1
402     shift
403     for v; do echo ${v}${suffix}; done
404 }
405
406 set_all(){
407     value=$1
408     shift
409     for var in $*; do
410         eval $var=$value
411     done
412 }
413
414 set_weak(){
415     value=$1
416     shift
417     for var; do
418         eval : \${$var:=$value}
419     done
420 }
421
422 sanitize_var_name(){
423     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
424 }
425
426 set_safe(){
427     var=$1
428     shift
429     eval $(sanitize_var_name "$var")='$*'
430 }
431
432 get_safe(){
433     eval echo \$$(sanitize_var_name "$1")
434 }
435
436 pushvar(){
437     for pvar in $*; do
438         eval level=\${${pvar}_level:=0}
439         eval ${pvar}_${level}="\$$pvar"
440         eval ${pvar}_level=$(($level+1))
441     done
442 }
443
444 popvar(){
445     for pvar in $*; do
446         eval level=\${${pvar}_level:-0}
447         test $level = 0 && continue
448         eval level=$(($level-1))
449         eval $pvar="\${${pvar}_${level}}"
450         eval ${pvar}_level=$level
451         eval unset ${pvar}_${level}
452     done
453 }
454
455 enable(){
456     set_all yes $*
457 }
458
459 disable(){
460     set_all no $*
461 }
462
463 enable_weak(){
464     set_weak yes $*
465 }
466
467 disable_weak(){
468     set_weak no $*
469 }
470
471 enable_safe(){
472     for var; do
473         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
474     done
475 }
476
477 disable_safe(){
478     for var; do
479         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
480     done
481 }
482
483 do_enable_deep(){
484     for var; do
485         enabled $var && continue
486         eval sel="\$${var}_select"
487         eval sgs="\$${var}_suggest"
488         pushvar var sgs
489         enable_deep $sel
490         popvar sgs
491         enable_deep_weak $sgs
492         popvar var
493     done
494 }
495
496 enable_deep(){
497     do_enable_deep $*
498     enable $*
499 }
500
501 enable_deep_weak(){
502     for var; do
503         disabled $var && continue
504         pushvar var
505         do_enable_deep $var
506         popvar var
507         enable_weak $var
508     done
509 }
510
511 enabled(){
512     test "${1#!}" = "$1" && op== || op=!=
513     eval test "x\$${1#!}" $op "xyes"
514 }
515
516 disabled(){
517     test "${1#!}" = "$1" && op== || op=!=
518     eval test "x\$${1#!}" $op "xno"
519 }
520
521 enabled_all(){
522     for opt; do
523         enabled $opt || return 1
524     done
525 }
526
527 disabled_all(){
528     for opt; do
529         disabled $opt || return 1
530     done
531 }
532
533 enabled_any(){
534     for opt; do
535         enabled $opt && return 0
536     done
537 }
538
539 disabled_any(){
540     for opt; do
541         disabled $opt && return 0
542     done
543     return 1
544 }
545
546 set_default(){
547     for opt; do
548         eval : \${$opt:=\$${opt}_default}
549     done
550 }
551
552 is_in(){
553     value=$1
554     shift
555     for var in $*; do
556         [ $var = $value ] && return 0
557     done
558     return 1
559 }
560
561 do_check_deps(){
562     for cfg; do
563         cfg="${cfg#!}"
564         enabled ${cfg}_checking && die "Circular dependency for $cfg."
565         disabled ${cfg}_checking && continue
566         enable ${cfg}_checking
567         append allopts $cfg
568
569         eval dep_all="\$${cfg}_deps"
570         eval dep_any="\$${cfg}_deps_any"
571         eval dep_sel="\$${cfg}_select"
572         eval dep_sgs="\$${cfg}_suggest"
573         eval dep_ifa="\$${cfg}_if"
574         eval dep_ifn="\$${cfg}_if_any"
575
576         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
577         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
578         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
579
580         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
581         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
582         enabled_all  $dep_all || disable $cfg
583         enabled_any  $dep_any || disable $cfg
584         disabled_any $dep_sel && disable $cfg
585
586         if enabled $cfg; then
587             enable_deep $dep_sel
588             enable_deep_weak $dep_sgs
589         fi
590
591         disable ${cfg}_checking
592     done
593 }
594
595 check_deps(){
596     unset allopts
597
598     do_check_deps "$@"
599
600     for cfg in $allopts; do
601         enabled $cfg || continue
602         eval dep_extralibs="\$${cfg}_extralibs"
603         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
604     done
605 }
606
607 print_config(){
608     pfx=$1
609     files=$2
610     shift 2
611     map 'eval echo "$v \${$v:-no}"' "$@" |
612     awk "BEGIN { split(\"$files\", files) }
613         {
614             c = \"$pfx\" toupper(\$1);
615             v = \$2;
616             sub(/yes/, 1, v);
617             sub(/no/,  0, v);
618             for (f in files) {
619                 file = files[f];
620                 if (file ~ /\\.h\$/) {
621                     printf(\"#define %s %d\\n\", c, v) >>file;
622                 } else if (file ~ /\\.asm\$/) {
623                     printf(\"%%define %s %d\\n\", c, v) >>file;
624                 } else if (file ~ /\\.mak\$/) {
625                     n = -v ? \"\" : \"!\";
626                     printf(\"%s%s=yes\\n\", n, c) >>file;
627                 }
628             }
629         }"
630 }
631
632 print_enabled(){
633     suf=$1
634     shift
635     for v; do
636         enabled $v && printf "%s\n" ${v%$suf};
637     done
638 }
639
640 append(){
641     var=$1
642     shift
643     eval "$var=\"\$$var $*\""
644 }
645
646 prepend(){
647     var=$1
648     shift
649     eval "$var=\"$* \$$var\""
650 }
651
652 add_cppflags(){
653     append CPPFLAGS "$@"
654 }
655
656 add_cflags(){
657     append CFLAGS $($cflags_filter "$@")
658 }
659
660 add_asflags(){
661     append ASFLAGS $($asflags_filter "$@")
662 }
663
664 add_ldflags(){
665     append LDFLAGS $($ldflags_filter "$@")
666 }
667
668 add_stripflags(){
669     append STRIPFLAGS "$@"
670 }
671
672 add_extralibs(){
673     prepend extralibs $($ldflags_filter "$@")
674 }
675
676 add_host_cppflags(){
677     append host_cppflags "$@"
678 }
679
680 add_host_cflags(){
681     append host_cflags $($host_cflags_filter "$@")
682 }
683
684 add_host_ldflags(){
685     append host_ldflags $($host_ldflags_filter "$@")
686 }
687
688 add_compat(){
689     append compat_objs $1
690     shift
691     map 'add_cppflags -D$v' "$@"
692 }
693
694 check_cmd(){
695     log "$@"
696     "$@" >> $logfile 2>&1
697 }
698
699 cc_o(){
700     eval printf '%s\\n' $CC_O
701 }
702
703 cc_e(){
704     eval printf '%s\\n' $CC_E
705 }
706
707 check_cc(){
708     log check_cc "$@"
709     cat > $TMPC
710     log_file $TMPC
711     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
712 }
713
714 check_cpp(){
715     log check_cpp "$@"
716     cat > $TMPC
717     log_file $TMPC
718     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
719 }
720
721 as_o(){
722     eval printf '%s\\n' $AS_O
723 }
724
725 check_as(){
726     log check_as "$@"
727     cat > $TMPS
728     log_file $TMPS
729     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
730 }
731
732 check_inline_asm(){
733     log check_inline_asm "$@"
734     name="$1"
735     code="$2"
736     shift 2
737     disable $name
738     check_cc "$@" <<EOF && enable $name
739 void foo(void){ __asm__ volatile($code); }
740 EOF
741 }
742
743 check_insn(){
744     log check_insn "$@"
745     check_inline_asm ${1}_inline "\"$2\""
746     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
747 }
748
749 check_yasm(){
750     log check_yasm "$@"
751     echo "$1" > $TMPS
752     log_file $TMPS
753     shift 1
754     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
755 }
756
757 ld_o(){
758     eval printf '%s\\n' $LD_O
759 }
760
761 check_ld(){
762     log check_ld "$@"
763     flags=$(filter_out '-l*' "$@")
764     libs=$(filter '-l*' "$@")
765     check_cc $($cflags_filter $flags) || return
766     flags=$($ldflags_filter $flags)
767     libs=$($ldflags_filter $libs)
768     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
769 }
770
771 print_include(){
772     hdr=$1
773     test "${hdr%.h}" = "${hdr}" &&
774         echo "#include $hdr"    ||
775         echo "#include <$hdr>"
776 }
777
778 check_code(){
779     log check_code "$@"
780     check=$1
781     headers=$2
782     code=$3
783     shift 3
784     {
785         for hdr in $headers; do
786             print_include $hdr
787         done
788         echo "int main(void) { $code; return 0; }"
789     } | check_$check "$@"
790 }
791
792 check_cppflags(){
793     log check_cppflags "$@"
794     check_cc "$@" <<EOF && append CPPFLAGS "$@"
795 int x;
796 EOF
797 }
798
799 test_cflags(){
800     log test_cflags "$@"
801     set -- $($cflags_filter "$@")
802     check_cc "$@" <<EOF
803 int x;
804 EOF
805 }
806
807 check_cflags(){
808     log check_cflags "$@"
809     test_cflags "$@" && add_cflags "$@"
810 }
811
812 test_ldflags(){
813     log test_ldflags "$@"
814     check_ld "$@" <<EOF
815 int main(void){ return 0; }
816 EOF
817 }
818
819 check_ldflags(){
820     log check_ldflags "$@"
821     test_ldflags "$@" && add_ldflags "$@"
822 }
823
824 test_stripflags(){
825     log test_stripflags "$@"
826     # call check_cc to get a fresh TMPO
827     check_cc <<EOF
828 int main(void) { return 0; }
829 EOF
830     check_cmd $strip $STRIPFLAGS "$@" $TMPO
831 }
832
833 check_stripflags(){
834     log check_stripflags "$@"
835     test_stripflags "$@" && add_stripflags "$@"
836 }
837
838 check_header(){
839     log check_header "$@"
840     header=$1
841     shift
842     disable_safe $header
843     check_cpp "$@" <<EOF && enable_safe $header
844 #include <$header>
845 int x;
846 EOF
847 }
848
849 check_func(){
850     log check_func "$@"
851     func=$1
852     shift
853     disable $func
854     check_ld "$@" <<EOF && enable $func
855 extern int $func();
856 int main(void){ $func(); }
857 EOF
858 }
859
860 check_mathfunc(){
861     log check_mathfunc "$@"
862     func=$1
863     narg=$2
864     shift 2
865     test $narg = 2 && args="f, g" || args="f"
866     disable $func
867     check_ld "$@" <<EOF && enable $func
868 #include <math.h>
869 float foo(float f, float g) { return $func($args); }
870 int main(void){ return 0; }
871 EOF
872 }
873
874 check_func_headers(){
875     log check_func_headers "$@"
876     headers=$1
877     funcs=$2
878     shift 2
879     {
880         for hdr in $headers; do
881             print_include $hdr
882         done
883         for func in $funcs; do
884             echo "long check_$func(void) { return (long) $func; }"
885         done
886         echo "int main(void) { return 0; }"
887     } | check_ld "$@" && enable $funcs && enable_safe $headers
888 }
889
890 check_cpp_condition(){
891     log check_cpp_condition "$@"
892     header=$1
893     condition=$2
894     shift 2
895     check_cpp "$@" <<EOF
896 #include <$header>
897 #if !($condition)
898 #error "unsatisfied condition: $condition"
899 #endif
900 EOF
901 }
902
903 check_lib(){
904     log check_lib "$@"
905     header="$1"
906     func="$2"
907     shift 2
908     check_header $header && check_func $func "$@" && add_extralibs "$@"
909 }
910
911 check_lib2(){
912     log check_lib2 "$@"
913     headers="$1"
914     funcs="$2"
915     shift 2
916     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
917 }
918
919 check_pkg_config(){
920     log check_pkg_config "$@"
921     pkg="$1"
922     headers="$2"
923     funcs="$3"
924     shift 3
925     check_cmd $pkg_config --exists --print-errors $pkg || return
926     pkg_cflags=$($pkg_config --cflags $pkg)
927     pkg_libs=$($pkg_config --libs $pkg)
928     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
929         set_safe ${pkg}_cflags $pkg_cflags   &&
930         set_safe ${pkg}_libs   $pkg_libs
931 }
932
933 check_exec(){
934     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
935 }
936
937 check_exec_crash(){
938     code=$(cat)
939
940     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
941     # are safe but may not be available everywhere.  Thus we use
942     # raise(SIGTERM) instead.  The check is run in a subshell so we
943     # can redirect the "Terminated" message from the shell.  SIGBUS
944     # is not defined by standard C so it is used conditionally.
945
946     (check_exec "$@") >> $logfile 2>&1 <<EOF
947 #include <signal.h>
948 static void sighandler(int sig){
949     raise(SIGTERM);
950 }
951 int foo(void){
952     $code
953 }
954 int (*func_ptr)(void) = foo;
955 int main(void){
956     signal(SIGILL, sighandler);
957     signal(SIGFPE, sighandler);
958     signal(SIGSEGV, sighandler);
959 #ifdef SIGBUS
960     signal(SIGBUS, sighandler);
961 #endif
962     return func_ptr();
963 }
964 EOF
965 }
966
967 check_type(){
968     log check_type "$@"
969     headers=$1
970     type=$2
971     shift 2
972     disable_safe "$type"
973     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
974 }
975
976 check_struct(){
977     log check_struct "$@"
978     headers=$1
979     struct=$2
980     member=$3
981     shift 3
982     disable_safe "${struct}_${member}"
983     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
984         enable_safe "${struct}_${member}"
985 }
986
987 check_builtin(){
988     log check_builtin "$@"
989     name=$1
990     headers=$2
991     builtin=$3
992     shift 3
993     disable "$name"
994     check_code ld "$headers" "$builtin" "$@" && enable "$name"
995 }
996
997 require(){
998     name="$1"
999     header="$2"
1000     func="$3"
1001     shift 3
1002     check_lib $header $func "$@" || die "ERROR: $name not found"
1003 }
1004
1005 require2(){
1006     name="$1"
1007     headers="$2"
1008     func="$3"
1009     shift 3
1010     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1011 }
1012
1013 require_pkg_config(){
1014     pkg="$1"
1015     check_pkg_config "$@" || die "ERROR: $pkg not found"
1016     add_cflags    $(get_safe ${pkg}_cflags)
1017     add_extralibs $(get_safe ${pkg}_libs)
1018 }
1019
1020 hostcc_e(){
1021     eval printf '%s\\n' $HOSTCC_E
1022 }
1023
1024 hostcc_o(){
1025     eval printf '%s\\n' $HOSTCC_O
1026 }
1027
1028 check_host_cc(){
1029     log check_host_cc "$@"
1030     cat > $TMPC
1031     log_file $TMPC
1032     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1033 }
1034
1035 check_host_cpp(){
1036     log check_host_cpp "$@"
1037     cat > $TMPC
1038     log_file $TMPC
1039     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1040 }
1041
1042 check_host_cppflags(){
1043     log check_host_cppflags "$@"
1044     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1045 int x;
1046 EOF
1047 }
1048
1049 check_host_cflags(){
1050     log check_host_cflags "$@"
1051     set -- $($host_cflags_filter "$@")
1052     check_host_cc "$@" <<EOF && append host_cflags "$@"
1053 int x;
1054 EOF
1055 }
1056
1057 check_host_cpp_condition(){
1058     log check_host_cpp_condition "$@"
1059     header=$1
1060     condition=$2
1061     shift 2
1062     check_host_cpp "$@" <<EOF
1063 #include <$header>
1064 #if !($condition)
1065 #error "unsatisfied condition: $condition"
1066 #endif
1067 EOF
1068 }
1069
1070 apply(){
1071     file=$1
1072     shift
1073     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1074 }
1075
1076 cp_if_changed(){
1077     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1078     mkdir -p "$(dirname $2)"
1079     $cp_f "$1" "$2"
1080 }
1081
1082 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1083 # system-dependent things.
1084
1085 COMPONENT_LIST="
1086     bsfs
1087     decoders
1088     demuxers
1089     encoders
1090     filters
1091     hwaccels
1092     indevs
1093     muxers
1094     outdevs
1095     parsers
1096     protocols
1097 "
1098
1099 EXAMPLE_LIST="
1100     avcodec_example
1101     filter_audio_example
1102     metadata_example
1103     output_example
1104     transcode_aac_example
1105 "
1106
1107 EXTERNAL_LIBRARY_LIST="
1108     avisynth
1109     bzlib
1110     frei0r
1111     gnutls
1112     libcdio
1113     libdc1394
1114     libfaac
1115     libfdk_aac
1116     libfreetype
1117     libgsm
1118     libilbc
1119     libmp3lame
1120     libopencore_amrnb
1121     libopencore_amrwb
1122     libopencv
1123     libopenjpeg
1124     libopus
1125     libpulse
1126     librtmp
1127     libschroedinger
1128     libspeex
1129     libtheora
1130     libvo_aacenc
1131     libvo_amrwbenc
1132     libvorbis
1133     libvpx
1134     libwavpack
1135     libwebp
1136     libx264
1137     libx265
1138     libxavs
1139     libxvid
1140     openssl
1141     x11grab
1142     zlib
1143 "
1144
1145 HWACCEL_LIST="
1146     dxva2
1147     vaapi
1148     vda
1149     vdpau
1150 "
1151 LIBRARY_LIST="
1152     avcodec
1153     avdevice
1154     avfilter
1155     avformat
1156     avresample
1157     avutil
1158     swscale
1159 "
1160
1161 PROGRAM_LIST="
1162     avconv
1163     avplay
1164     avprobe
1165     avserver
1166 "
1167
1168 CONFIG_LIST="
1169     $COMPONENT_LIST
1170     $EXAMPLE_LIST
1171     $EXTERNAL_LIBRARY_LIST
1172     $HWACCEL_LIST
1173     $LIBRARY_LIST
1174     $PROGRAM_LIST
1175     dct
1176     doc
1177     error_resilience
1178     fft
1179     gpl
1180     gray
1181     hardcoded_tables
1182     lsp
1183     lzo
1184     mdct
1185     memalign_hack
1186     neon_clobber_test
1187     network
1188     nonfree
1189     pod2man
1190     pic
1191     rdft
1192     runtime_cpudetect
1193     safe_bitstream_reader
1194     shared
1195     small
1196     sram
1197     static
1198     swscale_alpha
1199     texi2html
1200     thumb
1201     version3
1202     xmm_clobber_test
1203 "
1204
1205 THREADS_LIST='
1206     pthreads
1207     w32threads
1208 '
1209
1210 ATOMICS_LIST='
1211     atomics_gcc
1212     atomics_suncc
1213     atomics_win32
1214 '
1215
1216 ARCH_LIST='
1217     aarch64
1218     alpha
1219     arm
1220     avr32
1221     avr32_ap
1222     avr32_uc
1223     bfin
1224     ia64
1225     m68k
1226     mips
1227     mips64
1228     parisc
1229     ppc
1230     ppc64
1231     s390
1232     sh4
1233     sparc
1234     sparc64
1235     tilegx
1236     tilepro
1237     tomi
1238     x86
1239     x86_32
1240     x86_64
1241 '
1242
1243 ARCH_EXT_LIST_ARM='
1244     armv5te
1245     armv6
1246     armv6t2
1247     neon
1248     vfp
1249     vfpv3
1250 '
1251
1252 ARCH_EXT_LIST_X86='
1253     amd3dnow
1254     amd3dnowext
1255     avx
1256     avx2
1257     cpunop
1258     xop
1259     fma3
1260     fma4
1261     i686
1262     mmx
1263     mmxext
1264     sse
1265     sse2
1266     sse3
1267     sse4
1268     sse42
1269     ssse3
1270 '
1271
1272 ARCH_EXT_LIST="
1273     $ARCH_EXT_LIST_ARM
1274     $ARCH_EXT_LIST_X86
1275     altivec
1276     ppc4xx
1277     vis
1278 "
1279
1280 HAVE_LIST_CMDLINE='
1281     inline_asm
1282     symver
1283     yasm
1284 '
1285
1286 HAVE_LIST_PUB='
1287     bigendian
1288     fast_unaligned
1289 '
1290
1291 MATH_FUNCS="
1292     atanf
1293     atan2f
1294     cbrtf
1295     cosf
1296     exp2
1297     exp2f
1298     expf
1299     isinf
1300     isnan
1301     ldexpf
1302     llrint
1303     llrintf
1304     log2
1305     log2f
1306     log10f
1307     lrint
1308     lrintf
1309     powf
1310     rint
1311     round
1312     roundf
1313     sinf
1314     trunc
1315     truncf
1316 "
1317
1318 HAVE_LIST="
1319     $ARCH_EXT_LIST
1320     $(add_suffix _external $ARCH_EXT_LIST)
1321     $(add_suffix _inline   $ARCH_EXT_LIST)
1322     $HAVE_LIST_CMDLINE
1323     $HAVE_LIST_PUB
1324     $THREADS_LIST
1325     $ATOMICS_LIST
1326     $MATH_FUNCS
1327     aligned_malloc
1328     aligned_stack
1329     alsa_asoundlib_h
1330     altivec_h
1331     arpa_inet_h
1332     asm_mod_q
1333     atomic_cas_ptr
1334     atomics_native
1335     attribute_may_alias
1336     attribute_packed
1337     cdio_paranoia_h
1338     cdio_paranoia_paranoia_h
1339     closesocket
1340     CommandLineToArgvW
1341     CryptGenRandom
1342     dcbzl
1343     dev_bktr_ioctl_bt848_h
1344     dev_bktr_ioctl_meteor_h
1345     dev_ic_bt8xx_h
1346     dev_video_bktr_ioctl_bt848_h
1347     dev_video_meteor_ioctl_meteor_h
1348     direct_h
1349     dlfcn_h
1350     dlopen
1351     dos_paths
1352     dxva_h
1353     ebp_available
1354     ebx_available
1355     fast_64bit
1356     fast_clz
1357     fast_cmov
1358     fcntl
1359     fork
1360     getaddrinfo
1361     gethrtime
1362     getopt
1363     GetProcessAffinityMask
1364     GetProcessMemoryInfo
1365     GetProcessTimes
1366     GetSystemTimeAsFileTime
1367     getrusage
1368     getservbyport
1369     gettimeofday
1370     gnu_as
1371     gsm_h
1372     ibm_asm
1373     inet_aton
1374     io_h
1375     inline_asm_labels
1376     isatty
1377     jack_port_get_latency_range
1378     ldbrx
1379     libc_msvcrt
1380     libdc1394_1
1381     libdc1394_2
1382     local_aligned_16
1383     local_aligned_8
1384     localtime_r
1385     loongson
1386     machine_ioctl_bt848_h
1387     machine_ioctl_meteor_h
1388     machine_rw_barrier
1389     malloc_h
1390     MapViewOfFile
1391     memalign
1392     MemoryBarrier
1393     mkstemp
1394     mm_empty
1395     mmap
1396     mprotect
1397     nanosleep
1398     poll_h
1399     posix_memalign
1400     pragma_deprecated
1401     rdtsc
1402     sched_getaffinity
1403     sdl
1404     SetConsoleTextAttribute
1405     setmode
1406     setrlimit
1407     Sleep
1408     sndio_h
1409     socklen_t
1410     soundcard_h
1411     strerror_r
1412     strptime
1413     strtok_r
1414     struct_addrinfo
1415     struct_group_source_req
1416     struct_ip_mreq_source
1417     struct_ipv6_mreq
1418     struct_pollfd
1419     struct_rusage_ru_maxrss
1420     struct_sockaddr_in6
1421     struct_sockaddr_sa_len
1422     struct_sockaddr_storage
1423     struct_v4l2_frmivalenum_discrete
1424     symver_asm_label
1425     symver_gnu_asm
1426     sync_val_compare_and_swap
1427     sysconf
1428     sysctl
1429     sys_mman_h
1430     sys_param_h
1431     sys_resource_h
1432     sys_select_h
1433     sys_soundcard_h
1434     sys_time_h
1435     sys_un_h
1436     sys_videoio_h
1437     threads
1438     unistd_h
1439     usleep
1440     vdpau_x11
1441     vfp_args
1442     VirtualAlloc
1443     windows_h
1444     winsock2_h
1445     xform_asm
1446     xlib
1447     xmm_clobbers
1448 "
1449
1450 # options emitted with CONFIG_ prefix but not available on the command line
1451 CONFIG_EXTRA="
1452     aandcttables
1453     ac3dsp
1454     audio_frame_queue
1455     dsputil
1456     gcrypt
1457     golomb
1458     gplv3
1459     h263dsp
1460     h264chroma
1461     h264dsp
1462     h264pred
1463     h264qpel
1464     hpeldsp
1465     huffman
1466     intrax8
1467     lgplv3
1468     lpc
1469     mpegaudio
1470     mpegaudiodsp
1471     mpegvideo
1472     mpegvideoenc
1473     nettle
1474     rangecoder
1475     riffdec
1476     riffenc
1477     rtpdec
1478     rtpenc_chain
1479     sinewin
1480     videodsp
1481     vp3dsp
1482 "
1483
1484 CMDLINE_SELECT="
1485     $ARCH_EXT_LIST
1486     $CONFIG_LIST
1487     $HAVE_LIST_CMDLINE
1488     $THREADS_LIST
1489     asm
1490     cross_compile
1491     debug
1492     extra_warnings
1493     logging
1494     lto
1495     optimizations
1496 "
1497
1498 PATHS_LIST='
1499     bindir
1500     datadir
1501     docdir
1502     incdir
1503     libdir
1504     mandir
1505     prefix
1506     shlibdir
1507 '
1508
1509 CMDLINE_SET="
1510     $PATHS_LIST
1511     ar
1512     arch
1513     as
1514     build_suffix
1515     cc
1516     cpu
1517     cross_prefix
1518     dep_cc
1519     extra_version
1520     host_cc
1521     host_cflags
1522     host_ld
1523     host_ldflags
1524     host_libs
1525     host_os
1526     ld
1527     logfile
1528     malloc_prefix
1529     nm
1530     optflags
1531     pkg_config
1532     random_seed
1533     samples
1534     sysinclude
1535     sysroot
1536     target_exec
1537     target_os
1538     target_path
1539     target_samples
1540     toolchain
1541 "
1542
1543 CMDLINE_APPEND="
1544     extra_cflags
1545     host_cppflags
1546 "
1547
1548 # code dependency declarations
1549
1550 # architecture extensions
1551
1552 armv5te_deps="arm"
1553 armv6_deps="arm"
1554 armv6t2_deps="arm"
1555 neon_deps_any="aarch64 arm"
1556 vfp_deps_any="aarch64 arm"
1557 vfpv3_deps="vfp"
1558
1559 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1560
1561 altivec_deps="ppc"
1562 ppc4xx_deps="ppc"
1563
1564 vis_deps="sparc"
1565
1566 cpunop_deps="i686"
1567 x86_64_select="i686"
1568 x86_64_suggest="fast_cmov"
1569
1570 amd3dnow_deps="mmx"
1571 amd3dnowext_deps="amd3dnow"
1572 i686_deps="x86"
1573 mmx_deps="x86"
1574 mmxext_deps="mmx"
1575 sse_deps="mmxext"
1576 sse2_deps="sse"
1577 sse3_deps="sse2"
1578 ssse3_deps="sse3"
1579 sse4_deps="ssse3"
1580 sse42_deps="sse4"
1581 avx_deps="sse42"
1582 xop_deps="avx"
1583 fma3_deps="avx"
1584 fma4_deps="avx"
1585 avx2_deps="avx"
1586
1587 mmx_external_deps="yasm"
1588 mmx_inline_deps="inline_asm"
1589 mmx_suggest="mmx_external mmx_inline"
1590
1591 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1592     eval dep=\$${ext}_deps
1593     eval ${ext}_external_deps='"${dep}_external"'
1594     eval ${ext}_inline_deps='"${dep}_inline"'
1595     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1596 done
1597
1598 aligned_stack_if_any="aarch64 ppc x86"
1599 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1600 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1601 fast_unaligned_if_any="aarch64 ppc x86"
1602
1603 need_memalign="altivec neon sse"
1604
1605 # system capabilities
1606 log2_deps="!libc_msvcrt"
1607
1608 symver_if_any="symver_asm_label symver_gnu_asm"
1609
1610 # threading support
1611 atomics_gcc_if="sync_val_compare_and_swap"
1612 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1613 atomics_win32_if="MemoryBarrier"
1614 atomics_native_if_any="$ATOMICS_LIST"
1615 w32threads_deps="atomics_native"
1616 threads_if_any="$THREADS_LIST"
1617
1618 # subsystems
1619 dct_select="rdft"
1620 error_resilience_select="dsputil"
1621 lpc_select="dsputil"
1622 mdct_select="fft"
1623 rdft_select="fft"
1624 mpegaudio_select="mpegaudiodsp"
1625 mpegaudiodsp_select="dct"
1626 mpegvideo_select="dsputil hpeldsp videodsp"
1627 mpegvideoenc_select="mpegvideo"
1628
1629 # decoders / encoders
1630 aac_decoder_select="mdct sinewin"
1631 aac_encoder_select="audio_frame_queue mdct sinewin"
1632 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1633 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1634 ac3_encoder_select="mdct ac3dsp dsputil"
1635 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1636 aic_decoder_select="dsputil golomb"
1637 alac_encoder_select="lpc"
1638 als_decoder_select="dsputil"
1639 amrnb_decoder_select="lsp"
1640 amrwb_decoder_select="lsp"
1641 amv_decoder_select="sp5x_decoder"
1642 ape_decoder_select="dsputil"
1643 asv1_decoder_select="dsputil"
1644 asv1_encoder_select="dsputil"
1645 asv2_decoder_select="dsputil"
1646 asv2_encoder_select="dsputil"
1647 atrac1_decoder_select="mdct sinewin"
1648 atrac3_decoder_select="mdct"
1649 atrac3p_decoder_select="mdct sinewin"
1650 bink_decoder_select="dsputil hpeldsp"
1651 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1652 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1653 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1654 cllc_decoder_select="dsputil"
1655 comfortnoise_encoder_select="lpc"
1656 cook_decoder_select="dsputil mdct sinewin"
1657 cscd_decoder_select="lzo"
1658 cscd_decoder_suggest="zlib"
1659 dca_decoder_select="mdct"
1660 dnxhd_decoder_select="dsputil"
1661 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1662 dvvideo_decoder_select="dsputil"
1663 dvvideo_encoder_select="dsputil"
1664 dxa_decoder_deps="zlib"
1665 eac3_decoder_select="ac3_decoder"
1666 eac3_encoder_select="ac3_encoder"
1667 eamad_decoder_select="aandcttables dsputil mpegvideo"
1668 eatgq_decoder_select="aandcttables dsputil"
1669 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1670 ffv1_decoder_select="dsputil golomb rangecoder"
1671 ffv1_encoder_select="dsputil rangecoder"
1672 ffvhuff_decoder_select="huffyuv_decoder"
1673 ffvhuff_encoder_select="huffyuv_encoder"
1674 fic_decoder_select="dsputil golomb"
1675 flac_decoder_select="golomb"
1676 flac_encoder_select="dsputil golomb lpc"
1677 flashsv_decoder_deps="zlib"
1678 flashsv_encoder_deps="zlib"
1679 flashsv2_decoder_deps="zlib"
1680 flv_decoder_select="h263_decoder"
1681 flv_encoder_select="h263_encoder"
1682 fourxm_decoder_select="dsputil"
1683 fraps_decoder_select="dsputil huffman"
1684 g2m_decoder_deps="zlib"
1685 g2m_decoder_select="dsputil"
1686 h261_decoder_select="error_resilience mpegvideo"
1687 h261_encoder_select="aandcttables mpegvideoenc"
1688 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1689 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1690 h263i_decoder_select="h263_decoder"
1691 h263p_encoder_select="h263_encoder"
1692 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1693 h264_decoder_suggest="error_resilience"
1694 hevc_decoder_select="dsputil golomb videodsp"
1695 huffyuv_decoder_select="dsputil"
1696 huffyuv_encoder_select="dsputil huffman"
1697 iac_decoder_select="imc_decoder"
1698 imc_decoder_select="dsputil fft mdct sinewin"
1699 indeo3_decoder_select="hpeldsp"
1700 interplay_video_decoder_select="hpeldsp"
1701 jpegls_decoder_select="golomb mjpeg_decoder"
1702 jpegls_encoder_select="golomb"
1703 jv_decoder_select="dsputil"
1704 lagarith_decoder_select="dsputil"
1705 ljpeg_encoder_select="aandcttables mpegvideoenc"
1706 loco_decoder_select="golomb"
1707 mdec_decoder_select="dsputil error_resilience mpegvideo"
1708 metasound_decoder_select="lsp mdct sinewin"
1709 mimic_decoder_select="dsputil hpeldsp"
1710 mjpeg_decoder_select="dsputil hpeldsp"
1711 mjpegb_decoder_select="mjpeg_decoder"
1712 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1713 mlp_decoder_select="dsputil mlp_parser"
1714 motionpixels_decoder_select="dsputil"
1715 mp1_decoder_select="mpegaudio"
1716 mp1float_decoder_select="mpegaudio"
1717 mp2_decoder_select="mpegaudio"
1718 mp2float_decoder_select="mpegaudio"
1719 mp3_decoder_select="mpegaudio"
1720 mp3adu_decoder_select="mpegaudio"
1721 mp3adufloat_decoder_select="mpegaudio"
1722 mp3float_decoder_select="mpegaudio"
1723 mp3on4_decoder_select="mpegaudio"
1724 mp3on4float_decoder_select="mpegaudio"
1725 mpc7_decoder_select="dsputil mpegaudiodsp"
1726 mpc8_decoder_select="dsputil mpegaudiodsp"
1727 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1728 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1729 mpeg1video_decoder_select="error_resilience mpegvideo"
1730 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1731 mpeg2video_decoder_select="error_resilience mpegvideo"
1732 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1733 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1734 mpeg4_encoder_select="h263_encoder"
1735 msmpeg4v1_decoder_select="h263_decoder"
1736 msmpeg4v2_decoder_select="h263_decoder"
1737 msmpeg4v2_encoder_select="h263_encoder"
1738 msmpeg4v3_decoder_select="h263_decoder"
1739 msmpeg4v3_encoder_select="h263_encoder"
1740 mss2_decoder_select="error_resilience vc1_decoder"
1741 mxpeg_decoder_select="mjpeg_decoder"
1742 nellymoser_decoder_select="mdct sinewin"
1743 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1744 nuv_decoder_select="dsputil lzo"
1745 png_decoder_deps="zlib"
1746 png_decoder_select="dsputil"
1747 png_encoder_deps="zlib"
1748 png_encoder_select="dsputil"
1749 prores_decoder_select="dsputil"
1750 prores_encoder_select="dsputil"
1751 qcelp_decoder_select="lsp"
1752 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1753 ra_144_encoder_select="audio_frame_queue lpc"
1754 ralf_decoder_select="golomb"
1755 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1756 rv10_encoder_select="h263_encoder"
1757 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1758 rv20_encoder_select="h263_encoder"
1759 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1760 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1761 shorten_decoder_select="golomb"
1762 sipr_decoder_select="lsp"
1763 sp5x_decoder_select="mjpeg_decoder"
1764 svq1_decoder_select="hpeldsp"
1765 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1766 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1767 svq3_decoder_suggest="error_resilience zlib"
1768 tak_decoder_select="dsputil"
1769 theora_decoder_select="vp3_decoder"
1770 tiff_decoder_suggest="zlib"
1771 tiff_encoder_suggest="zlib"
1772 thp_decoder_select="mjpeg_decoder"
1773 truehd_decoder_select="mlp_decoder"
1774 truemotion2_decoder_select="dsputil"
1775 truespeech_decoder_select="dsputil"
1776 tscc_decoder_deps="zlib"
1777 twinvq_decoder_select="mdct lsp sinewin"
1778 utvideo_decoder_select="dsputil"
1779 utvideo_encoder_select="dsputil huffman"
1780 vble_decoder_select="dsputil"
1781 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1782 vc1image_decoder_select="vc1_decoder"
1783 vorbis_decoder_select="mdct"
1784 vorbis_encoder_select="mdct"
1785 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1786 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1787 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1788 vp6a_decoder_select="vp6_decoder"
1789 vp6f_decoder_select="vp6_decoder"
1790 vp8_decoder_select="h264pred videodsp"
1791 vp9_decoder_select="videodsp"
1792 webp_decoder_select="vp8_decoder"
1793 wmapro_decoder_select="mdct sinewin"
1794 wmav1_decoder_select="mdct sinewin"
1795 wmav1_encoder_select="mdct sinewin"
1796 wmav2_decoder_select="mdct sinewin"
1797 wmav2_encoder_select="mdct sinewin"
1798 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1799 wmv1_decoder_select="h263_decoder"
1800 wmv1_encoder_select="h263_encoder"
1801 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1802 wmv2_encoder_select="h263_encoder"
1803 wmv3_decoder_select="vc1_decoder"
1804 wmv3image_decoder_select="wmv3_decoder"
1805 zerocodec_decoder_deps="zlib"
1806 zlib_decoder_deps="zlib"
1807 zlib_encoder_deps="zlib"
1808 zmbv_decoder_deps="zlib"
1809 zmbv_encoder_deps="zlib"
1810
1811 # hardware accelerators
1812 dxva2_deps="dxva2api_h"
1813 vaapi_deps="va_va_h"
1814 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1815 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1816 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1817
1818 h263_vaapi_hwaccel_deps="vaapi"
1819 h263_vaapi_hwaccel_select="h263_decoder"
1820 h263_vdpau_hwaccel_deps="vdpau"
1821 h263_vdpau_hwaccel_select="h263_decoder"
1822 h264_dxva2_hwaccel_deps="dxva2"
1823 h264_dxva2_hwaccel_select="h264_decoder"
1824 h264_vaapi_hwaccel_deps="vaapi"
1825 h264_vaapi_hwaccel_select="h264_decoder"
1826 h264_vda_hwaccel_deps="vda"
1827 h264_vda_hwaccel_select="h264_decoder"
1828 h264_vdpau_hwaccel_deps="vdpau"
1829 h264_vdpau_hwaccel_select="h264_decoder"
1830 mpeg1_vdpau_hwaccel_deps="vdpau"
1831 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1832 mpeg2_dxva2_hwaccel_deps="dxva2"
1833 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1834 mpeg2_vaapi_hwaccel_deps="vaapi"
1835 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1836 mpeg2_vdpau_hwaccel_deps="vdpau"
1837 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1838 mpeg4_vaapi_hwaccel_deps="vaapi"
1839 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1840 mpeg4_vdpau_hwaccel_deps="vdpau"
1841 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1842 vc1_dxva2_hwaccel_deps="dxva2"
1843 vc1_dxva2_hwaccel_select="vc1_decoder"
1844 vc1_vaapi_hwaccel_deps="vaapi"
1845 vc1_vaapi_hwaccel_select="vc1_decoder"
1846 vc1_vdpau_hwaccel_deps="vdpau"
1847 vc1_vdpau_hwaccel_select="vc1_decoder"
1848 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1849 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1850 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1851
1852 # parsers
1853 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1854 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1855 mpegvideo_parser_select="error_resilience mpegvideo"
1856 vc1_parser_select="mpegvideo"
1857
1858 # external libraries
1859 libfaac_encoder_deps="libfaac"
1860 libfaac_encoder_select="audio_frame_queue"
1861 libfdk_aac_decoder_deps="libfdk_aac"
1862 libfdk_aac_encoder_deps="libfdk_aac"
1863 libfdk_aac_encoder_select="audio_frame_queue"
1864 libgsm_decoder_deps="libgsm"
1865 libgsm_encoder_deps="libgsm"
1866 libgsm_ms_decoder_deps="libgsm"
1867 libgsm_ms_encoder_deps="libgsm"
1868 libilbc_decoder_deps="libilbc"
1869 libilbc_encoder_deps="libilbc"
1870 libmp3lame_encoder_deps="libmp3lame"
1871 libmp3lame_encoder_select="audio_frame_queue"
1872 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1873 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1874 libopencore_amrnb_encoder_select="audio_frame_queue"
1875 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1876 libopenjpeg_decoder_deps="libopenjpeg"
1877 libopenjpeg_encoder_deps="libopenjpeg"
1878 libopus_decoder_deps="libopus"
1879 libopus_encoder_deps="libopus"
1880 libopus_encoder_select="audio_frame_queue"
1881 libschroedinger_decoder_deps="libschroedinger"
1882 libschroedinger_encoder_deps="libschroedinger"
1883 libspeex_decoder_deps="libspeex"
1884 libspeex_encoder_deps="libspeex"
1885 libspeex_encoder_select="audio_frame_queue"
1886 libtheora_encoder_deps="libtheora"
1887 libvo_aacenc_encoder_deps="libvo_aacenc"
1888 libvo_aacenc_encoder_select="audio_frame_queue"
1889 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1890 libvorbis_encoder_deps="libvorbis"
1891 libvorbis_encoder_select="audio_frame_queue"
1892 libvpx_vp8_decoder_deps="libvpx"
1893 libvpx_vp8_encoder_deps="libvpx"
1894 libvpx_vp9_decoder_deps="libvpx"
1895 libvpx_vp9_encoder_deps="libvpx"
1896 libwavpack_encoder_deps="libwavpack"
1897 libwebp_encoder_deps="libwebp"
1898 libx264_encoder_deps="libx264"
1899 libx265_encoder_deps="libx265"
1900 libxavs_encoder_deps="libxavs"
1901 libxvid_encoder_deps="libxvid"
1902
1903 # demuxers / muxers
1904 ac3_demuxer_select="ac3_parser"
1905 asf_demuxer_select="riffdec"
1906 asf_muxer_select="riffenc"
1907 asf_stream_muxer_select="asf_muxer"
1908 avi_demuxer_select="riffdec"
1909 avi_muxer_select="riffenc"
1910 avisynth_demuxer_deps="avisynth"
1911 avisynth_demuxer_select="riffdec"
1912 caf_demuxer_select="riffdec"
1913 dirac_demuxer_select="dirac_parser"
1914 dxa_demuxer_select="riffdec"
1915 eac3_demuxer_select="ac3_parser"
1916 f4v_muxer_select="mov_muxer"
1917 flac_demuxer_select="flac_parser"
1918 hds_muxer_select="flv_muxer"
1919 hls_muxer_select="mpegts_muxer"
1920 ipod_muxer_select="mov_muxer"
1921 ismv_muxer_select="mov_muxer"
1922 matroska_audio_muxer_select="matroska_muxer"
1923 matroska_demuxer_select="riffdec"
1924 matroska_demuxer_suggest="bzlib lzo zlib"
1925 matroska_muxer_select="riffenc"
1926 mmf_muxer_select="riffenc"
1927 mov_demuxer_select="riffdec"
1928 mov_demuxer_suggest="zlib"
1929 mov_muxer_select="riffenc rtpenc_chain"
1930 mp3_demuxer_select="mpegaudio_parser"
1931 mp4_muxer_select="mov_muxer"
1932 mpegts_muxer_select="adts_muxer latm_muxer"
1933 mpegtsraw_demuxer_select="mpegts_demuxer"
1934 mxf_d10_muxer_select="mxf_muxer"
1935 nut_muxer_select="riffenc"
1936 nuv_demuxer_select="riffdec"
1937 ogg_demuxer_select="golomb"
1938 psp_muxer_select="mov_muxer"
1939 rtp_demuxer_select="sdp_demuxer"
1940 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1941 rtsp_demuxer_select="http_protocol rtpdec"
1942 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1943 sap_demuxer_select="sdp_demuxer"
1944 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1945 sdp_demuxer_select="rtpdec"
1946 smoothstreaming_muxer_select="ismv_muxer"
1947 spdif_muxer_select="aac_parser"
1948 tak_demuxer_select="tak_parser"
1949 tg2_muxer_select="mov_muxer"
1950 tgp_muxer_select="mov_muxer"
1951 w64_demuxer_select="wav_demuxer"
1952 wav_demuxer_select="riffdec"
1953 wav_muxer_select="riffenc"
1954 webm_muxer_select="riffenc"
1955 wtv_demuxer_select="riffdec"
1956 xmv_demuxer_select="riffdec"
1957 xwma_demuxer_select="riffdec"
1958
1959 # indevs / outdevs
1960 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1961 alsa_outdev_deps="alsa_asoundlib_h"
1962 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1963 dv1394_indev_deps="dv1394"
1964 dv1394_indev_select="dv_demuxer"
1965 fbdev_indev_deps="linux_fb_h"
1966 jack_indev_deps="jack_jack_h pthreads"
1967 libcdio_indev_deps="libcdio"
1968 libdc1394_indev_deps="libdc1394"
1969 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1970 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1971 pulse_indev_deps="libpulse"
1972 sndio_indev_deps="sndio_h"
1973 sndio_outdev_deps="sndio_h"
1974 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1975 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1976 vfwcap_indev_extralibs="-lavicap32"
1977 x11grab_indev_deps="x11grab XShmCreateImage"
1978
1979 # protocols
1980 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1981 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1982 ffrtmpcrypt_protocol_select="tcp_protocol"
1983 ffrtmphttp_protocol_deps="!librtmp_protocol"
1984 ffrtmphttp_protocol_select="http_protocol"
1985 gopher_protocol_select="network"
1986 httpproxy_protocol_select="tcp_protocol"
1987 http_protocol_select="tcp_protocol"
1988 https_protocol_select="tls_protocol"
1989 librtmp_protocol_deps="librtmp"
1990 librtmpe_protocol_deps="librtmp"
1991 librtmps_protocol_deps="librtmp"
1992 librtmpt_protocol_deps="librtmp"
1993 librtmpte_protocol_deps="librtmp"
1994 mmsh_protocol_select="http_protocol"
1995 mmst_protocol_select="network"
1996 rtmp_protocol_deps="!librtmp_protocol"
1997 rtmp_protocol_select="tcp_protocol"
1998 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1999 rtmps_protocol_deps="!librtmp_protocol"
2000 rtmps_protocol_select="tls_protocol"
2001 rtmpt_protocol_select="ffrtmphttp_protocol"
2002 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2003 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2004 rtp_protocol_select="udp_protocol"
2005 sctp_protocol_deps="struct_sctp_event_subscribe"
2006 sctp_protocol_select="network"
2007 srtp_protocol_select="rtp_protocol"
2008 tcp_protocol_select="network"
2009 tls_protocol_deps_any="openssl gnutls"
2010 tls_protocol_select="tcp_protocol"
2011 udp_protocol_select="network"
2012 unix_protocol_deps="sys_un_h"
2013 unix_protocol_select="network"
2014
2015 # filters
2016 blackframe_filter_deps="gpl"
2017 boxblur_filter_deps="gpl"
2018 cropdetect_filter_deps="gpl"
2019 delogo_filter_deps="gpl"
2020 drawtext_filter_deps="libfreetype"
2021 frei0r_filter_deps="frei0r dlopen strtok_r"
2022 frei0r_filter_extralibs='$ldl'
2023 frei0r_src_filter_deps="frei0r dlopen strtok_r"
2024 frei0r_src_filter_extralibs='$ldl'
2025 hqdn3d_filter_deps="gpl"
2026 interlace_filter_deps="gpl"
2027 resample_filter_deps="avresample"
2028 ocv_filter_deps="libopencv"
2029 scale_filter_deps="swscale"
2030
2031 # examples
2032 avcodec_example_deps="avcodec avutil"
2033 filter_audio_example_deps="avfilter avutil"
2034 metadata_example_deps="avformat avutil"
2035 output_example_deps="avcodec avformat avutil swscale"
2036 transcode_aac_example_deps="avcodec avformat avresample"
2037
2038 # libraries
2039 avcodec_deps="avutil"
2040 avdevice_deps="avutil avcodec avformat"
2041 avfilter_deps="avutil"
2042 avformat_deps="avutil avcodec"
2043 avresample_deps="avutil"
2044 swscale_deps="avutil"
2045
2046 # programs
2047 avconv_deps="avcodec avfilter avformat avresample swscale"
2048 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2049                fps_filter null_filter resample_filter scale_filter
2050                setpts_filter trim_filter"
2051 avplay_deps="avcodec avformat avresample swscale sdl"
2052 avplay_libs='$sdl_libs'
2053 avplay_select="rdft"
2054 avprobe_deps="avcodec avformat"
2055 avserver_deps="avformat fork !shared"
2056 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2057
2058 # documentation
2059 pod2man_deps="doc"
2060 texi2html_deps="doc"
2061
2062 # default parameters
2063
2064 logfile="config.log"
2065
2066 # installation paths
2067 prefix_default="/usr/local"
2068 bindir_default='${prefix}/bin'
2069 datadir_default='${prefix}/share/avconv'
2070 docdir_default='${prefix}/share/doc/libav'
2071 incdir_default='${prefix}/include'
2072 libdir_default='${prefix}/lib'
2073 mandir_default='${prefix}/share/man'
2074 shlibdir_default="$libdir_default"
2075
2076 # toolchain
2077 ar_default="ar"
2078 cc_default="gcc"
2079 host_cc_default="gcc"
2080 cp_f="cp -f"
2081 ln_s="ln -s -f"
2082 nm_default="nm -g"
2083 objformat="elf"
2084 pkg_config_default=pkg-config
2085 ranlib="ranlib"
2086 strip="strip"
2087 yasmexe="yasm"
2088
2089 nogas=":"
2090
2091 # machine
2092 arch_default=$(uname -m)
2093 cpu="generic"
2094
2095 # OS
2096 target_os_default=$(tolower $(uname -s))
2097 host_os=$target_os_default
2098
2099 # configurable options
2100 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2101
2102 enable asm
2103 enable debug
2104 enable doc
2105 enable optimizations
2106 enable safe_bitstream_reader
2107 enable static
2108 enable swscale_alpha
2109
2110 # By default, enable only those hwaccels that have no external dependencies.
2111 enable dxva2 vdpau
2112
2113 # build settings
2114 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2115 LIBPREF="lib"
2116 LIBSUF=".a"
2117 FULLNAME='$(NAME)$(BUILDSUF)'
2118 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2119 SLIBPREF="lib"
2120 SLIBSUF=".so"
2121 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2122 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2123 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2124 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2125 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2126 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2127
2128 asflags_filter=echo
2129 cflags_filter=echo
2130 ldflags_filter=echo
2131
2132 AS_C='-c'
2133 AS_O='-o $@'
2134 CC_C='-c'
2135 CC_E='-E -o $@'
2136 CC_O='-o $@'
2137 LD_O='-o $@'
2138 LD_LIB='-l%'
2139 LD_PATH='-L'
2140 HOSTCC_C='-c'
2141 HOSTCC_E='-E -o $@'
2142 HOSTCC_O='-o $@'
2143 HOSTLD_O='-o $@'
2144
2145 host_libs='-lm'
2146 host_cflags_filter=echo
2147 host_ldflags_filter=echo
2148
2149 target_path='$(CURDIR)'
2150
2151 # since the object filename is not given with the -MM flag, the compiler
2152 # is only able to print the basename, and we must add the path ourselves
2153 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2154 DEPFLAGS='-MM'
2155
2156 # find source path
2157 if test -f configure; then
2158     source_path=.
2159 else
2160     source_path=$(cd $(dirname "$0"); pwd)
2161     echo "$source_path" | grep -q '[[:blank:]]' &&
2162         die "Out of tree builds are impossible with whitespace in source path."
2163     test -e "$source_path/config.h" &&
2164         die "Out of tree builds are impossible with config.h in source dir."
2165 fi
2166
2167 for v in "$@"; do
2168     r=${v#*=}
2169     l=${v%"$r"}
2170     r=$(sh_quote "$r")
2171     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2172 done
2173
2174 find_things(){
2175     thing=$1
2176     pattern=$2
2177     file=$source_path/$3
2178     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2179 }
2180
2181 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2182 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2183 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2184 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2185 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2186 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2187 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2188 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2189 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2190 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2191 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2192
2193 ALL_COMPONENTS="
2194     $BSF_LIST
2195     $DECODER_LIST
2196     $DEMUXER_LIST
2197     $ENCODER_LIST
2198     $FILTER_LIST
2199     $HWACCEL_LIST
2200     $INDEV_LIST
2201     $MUXER_LIST
2202     $OUTDEV_LIST
2203     $PARSER_LIST
2204     $PROTOCOL_LIST
2205 "
2206
2207 for n in $COMPONENT_LIST; do
2208     v=$(toupper ${n%s})_LIST
2209     eval enable \$$v
2210     eval ${n}_if_any="\$$v"
2211 done
2212
2213 enable $ARCH_EXT_LIST
2214
2215 die_unknown(){
2216     echo "Unknown option \"$1\"."
2217     echo "See $0 --help for available options."
2218     exit 1
2219 }
2220
2221 print_3_columns() {
2222     cat | tr ' ' '\n' | sort | pr -r -3 -t
2223 }
2224
2225 show_list() {
2226     suffix=_$1
2227     shift
2228     echo $* | sed s/$suffix//g | print_3_columns
2229     exit 0
2230 }
2231
2232 rand_list(){
2233     IFS=', '
2234     set -- $*
2235     unset IFS
2236     for thing; do
2237         comp=${thing%:*}
2238         prob=${thing#$comp}
2239         prob=${prob#:}
2240         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2241         echo "prob ${prob:-0.5}"
2242         printf '%s\n' $comp
2243     done
2244 }
2245
2246 do_random(){
2247     action=$1
2248     shift
2249     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2250     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2251 }
2252
2253 for opt do
2254     optval="${opt#*=}"
2255     case "$opt" in
2256         --extra-ldflags=*)
2257             add_ldflags $optval
2258         ;;
2259         --extra-libs=*)
2260             add_extralibs $optval
2261         ;;
2262         --disable-devices)
2263             disable $INDEV_LIST $OUTDEV_LIST
2264         ;;
2265         --enable-debug=*)
2266             debuglevel="$optval"
2267         ;;
2268         --disable-programs)
2269             disable $PROGRAM_LIST
2270         ;;
2271         --disable-everything)
2272             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2273         ;;
2274         --disable-all)
2275             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2276             disable $LIBRARY_LIST $PROGRAM_LIST doc
2277         ;;
2278         --enable-random|--disable-random)
2279             action=${opt%%-random}
2280             do_random ${action#--} $COMPONENT_LIST
2281         ;;
2282         --enable-random=*|--disable-random=*)
2283             action=${opt%%-random=*}
2284             do_random ${action#--} $optval
2285         ;;
2286         --enable-*=*|--disable-*=*)
2287             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2288             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2289             eval list=\$$(toupper $thing)_LIST
2290             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2291             $action $(filter "$name" $list)
2292         ;;
2293         --enable-?*|--disable-?*)
2294             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2295             if is_in $option $COMPONENT_LIST; then
2296                 test $action = disable && action=unset
2297                 eval $action \$$(toupper ${option%s})_LIST
2298             elif is_in $option $CMDLINE_SELECT; then
2299                 $action $option
2300             else
2301                 die_unknown $opt
2302             fi
2303         ;;
2304         --list-*)
2305             NAME="${opt#--list-}"
2306             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2307             NAME=${NAME%s}
2308             eval show_list $NAME \$$(toupper $NAME)_LIST
2309         ;;
2310         --help|-h) show_help
2311         ;;
2312         *)
2313             optname="${opt%%=*}"
2314             optname="${optname#--}"
2315             optname=$(echo "$optname" | sed 's/-/_/g')
2316             if is_in $optname $CMDLINE_SET; then
2317                 eval $optname='$optval'
2318             elif is_in $optname $CMDLINE_APPEND; then
2319                 append $optname "$optval"
2320             else
2321                 die_unknown $opt
2322             fi
2323         ;;
2324     esac
2325 done
2326
2327 disabled logging && logfile=/dev/null
2328
2329 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2330 set >> $logfile
2331
2332 test -n "$cross_prefix" && enable cross_compile
2333
2334 if enabled cross_compile; then
2335     test -n "$arch" && test -n "$target_os" ||
2336         die "Must specify target arch and OS when cross-compiling"
2337 fi
2338
2339 ar_default="${cross_prefix}${ar_default}"
2340 cc_default="${cross_prefix}${cc_default}"
2341 nm_default="${cross_prefix}${nm_default}"
2342 pkg_config_default="${cross_prefix}${pkg_config_default}"
2343 ranlib="${cross_prefix}${ranlib}"
2344 strip="${cross_prefix}${strip}"
2345
2346 sysinclude_default="${sysroot}/usr/include"
2347
2348 case "$toolchain" in
2349     clang-asan)
2350         cc_default="clang"
2351         add_cflags  -fsanitize=address
2352         add_ldflags -fsanitize=address
2353     ;;
2354     clang-tsan)
2355         cc_default="clang"
2356         add_cflags  -fsanitize=thread -pie
2357         add_ldflags -fsanitize=thread -pie
2358     ;;
2359     clang-usan)
2360         cc_default="clang"
2361         add_cflags  -fsanitize=undefined
2362         add_ldflags -fsanitize=undefined
2363     ;;
2364     gcc-asan)
2365         cc_default="gcc"
2366         add_cflags  -fsanitize=address
2367         add_ldflags -fsanitize=address
2368     ;;
2369     gcc-tsan)
2370         cc_default="gcc"
2371         add_cflags  -fsanitize=thread -pie -fPIC
2372         add_ldflags -fsanitize=thread -pie -fPIC
2373     ;;
2374     gcc-usan)
2375         cc_default="gcc"
2376         add_cflags  -fsanitize=undefined
2377         add_ldflags -fsanitize=undefined
2378     ;;
2379     valgrind-massif)
2380         target_exec_default="valgrind"
2381         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2382     ;;
2383     valgrind-memcheck)
2384         target_exec_default="valgrind"
2385         target_exec_args="--track-origins=yes --leak-check=full"
2386     ;;
2387     msvc)
2388         # Check whether the current MSVC version needs the C99 converter.
2389         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2390         # support enough of C99 to build libav. Default to the new
2391         # behaviour if the regexp was unable to match anything, since this
2392         # successfully parses the version number of existing supported
2393         # versions that require the converter (MSVC 2010 and 2012).
2394         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2395         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2396             cc_default="cl"
2397         else
2398             cc_default="c99wrap cl"
2399         fi
2400         ld_default="link"
2401         nm_default="dumpbin -symbols"
2402         ar_default="lib"
2403         target_os_default="win32"
2404         # Use a relative path for TMPDIR. This makes sure all the
2405         # ffconf temp files are written with a relative path, avoiding
2406         # issues with msys/win32 path conversion for MSVC parameters
2407         # such as -Fo<file> or -out:<file>.
2408         TMPDIR=.
2409     ;;
2410     icl)
2411         cc_default="icl"
2412         ld_default="xilink"
2413         nm_default="dumpbin -symbols"
2414         ar_default="xilib"
2415         target_os_default="win32"
2416         TMPDIR=.
2417     ;;
2418     gcov)
2419         add_cflags  -fprofile-arcs -ftest-coverage
2420         add_ldflags -fprofile-arcs -ftest-coverage
2421     ;;
2422     hardened)
2423         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2424         add_ldflags -Wl,-z,relro -Wl,-z,now
2425     ;;
2426     ?*)
2427         die "Unknown toolchain $toolchain"
2428     ;;
2429 esac
2430
2431 set_default arch cc pkg_config sysinclude target_exec target_os
2432 enabled cross_compile || host_cc_default=$cc
2433 set_default host_cc
2434
2435 if ! $pkg_config --version >/dev/null 2>&1; then
2436     warn "$pkg_config not found, library detection may fail."
2437     pkg_config=false
2438 fi
2439
2440 exesuf() {
2441     case $1 in
2442         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2443     esac
2444 }
2445
2446 EXESUF=$(exesuf $target_os)
2447 HOSTEXESUF=$(exesuf $host_os)
2448
2449 # set temporary file name
2450 : ${TMPDIR:=$TEMPDIR}
2451 : ${TMPDIR:=$TMP}
2452 : ${TMPDIR:=/tmp}
2453
2454 if ! check_cmd mktemp -u XXXXXX; then
2455     # simple replacement for missing mktemp
2456     # NOT SAFE FOR GENERAL USE
2457     mktemp(){
2458         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2459     }
2460 fi
2461
2462 tmpfile(){
2463     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2464         (set -C; exec > $tmp) 2>/dev/null ||
2465         die "Unable to create temporary file in $TMPDIR."
2466     append TMPFILES $tmp
2467     eval $1=$tmp
2468 }
2469
2470 trap 'rm -f -- $TMPFILES' EXIT
2471
2472 tmpfile TMPASM .asm
2473 tmpfile TMPC   .c
2474 tmpfile TMPE   $EXESUF
2475 tmpfile TMPH   .h
2476 tmpfile TMPO   .o
2477 tmpfile TMPS   .S
2478 tmpfile TMPSH  .sh
2479 tmpfile TMPV   .ver
2480
2481 unset -f mktemp
2482
2483 chmod +x $TMPE
2484
2485 # make sure we can execute files in $TMPDIR
2486 cat > $TMPSH 2>> $logfile <<EOF
2487 #! /bin/sh
2488 EOF
2489 chmod +x $TMPSH >> $logfile 2>&1
2490 if ! $TMPSH >> $logfile 2>&1; then
2491     cat <<EOF
2492 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2493 variable to another directory and make sure that it is not mounted noexec.
2494 EOF
2495     die "Sanity test failed."
2496 fi
2497
2498 ccc_flags(){
2499     for flag; do
2500         case $flag in
2501             -std=c99)           echo -c99                       ;;
2502             -mcpu=*)            echo -arch ${flag#*=}           ;;
2503             -mieee)             echo -ieee                      ;;
2504             -O*|-fast)          echo $flag                      ;;
2505             -fno-math-errno)    echo -assume nomath_errno       ;;
2506             -g)                 echo -g3                        ;;
2507             -Wall)              echo -msg_enable level2         ;;
2508             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2509             -Wl,*)              echo $flag                      ;;
2510             -f*|-W*)                                            ;;
2511             *)                  echo $flag                      ;;
2512         esac
2513    done
2514 }
2515
2516 cparser_flags(){
2517     for flag; do
2518         case $flag in
2519             -Wno-switch)             echo -Wno-switch-enum ;;
2520             -Wno-format-zero-length) ;;
2521             -Wdisabled-optimization) ;;
2522             -Wno-pointer-sign)       echo -Wno-other ;;
2523             *)                       echo $flag ;;
2524         esac
2525     done
2526 }
2527
2528 msvc_common_flags(){
2529     for flag; do
2530         case $flag in
2531             # In addition to specifying certain flags under the compiler
2532             # specific filters, they must be specified here as well or else the
2533             # generic catch all at the bottom will print the original flag.
2534             -Wall)                ;;
2535             -std=c99)             ;;
2536             # Common flags
2537             -fomit-frame-pointer) ;;
2538             -g)                   echo -Z7 ;;
2539             -fno-math-errno)      ;;
2540             -fno-common)          ;;
2541             -fno-signed-zeros)    ;;
2542             -fPIC)                ;;
2543             -mthumb)              ;;
2544             -march=*)             ;;
2545             -lz)                  echo zlib.lib ;;
2546             -lavifil32)           echo vfw32.lib ;;
2547             -lavicap32)           echo vfw32.lib user32.lib ;;
2548             -l*)                  echo ${flag#-l}.lib ;;
2549             *)                    echo $flag ;;
2550         esac
2551     done
2552 }
2553
2554 msvc_flags(){
2555     msvc_common_flags "$@"
2556     for flag; do
2557         case $flag in
2558             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2559                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2560                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2561                                        -wd4273 ;;
2562         esac
2563     done
2564 }
2565
2566 icl_flags(){
2567     msvc_common_flags "$@"
2568     for flag; do
2569         case $flag in
2570             # Despite what Intel's documentation says -Wall, which is supported
2571             # on Windows, does enable remarks so disable them here.
2572             -Wall)                echo $flag -Qdiag-disable:remark ;;
2573             -std=c99)             echo -Qstd=c99 ;;
2574         esac
2575     done
2576 }
2577
2578 pgi_flags(){
2579     for flag; do
2580         case $flag in
2581             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2582             -fomit-frame-pointer) echo -Mnoframe ;;
2583             -g)                   echo -gopt ;;
2584             *)                    echo $flag ;;
2585         esac
2586     done
2587 }
2588
2589 suncc_flags(){
2590     for flag; do
2591         case $flag in
2592             -march=*|-mcpu=*)
2593                 case "${flag#*=}" in
2594                     native)                   echo -xtarget=native       ;;
2595                     v9|niagara)               echo -xarch=sparc          ;;
2596                     ultrasparc)               echo -xarch=sparcvis       ;;
2597                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2598                     i586|pentium)             echo -xchip=pentium        ;;
2599                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2600                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2601                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2602                     pentium4*)          echo -xtarget=pentium4           ;;
2603                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2604                     *-sse3)             echo -xarch=sse3                 ;;
2605                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2606                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2607                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2608                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2609                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2610                     k8|opteron|athlon64|athlon-fx)
2611                                                echo -xarch=sse2a         ;;
2612                     athlon*)                   echo -xarch=pentium_proa  ;;
2613                 esac
2614                 ;;
2615             -std=c99)             echo -xc99              ;;
2616             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2617             -fPIC)                echo -KPIC -xcode=pic32 ;;
2618             -W*,*)                echo $flag              ;;
2619             -f*-*|-W*|-mimpure-text)                      ;;
2620             -shared)              echo -G                 ;;
2621             *)                    echo $flag              ;;
2622         esac
2623     done
2624 }
2625
2626 tms470_flags(){
2627     for flag; do
2628         case $flag in
2629             -march=*|-mcpu=*)
2630                 case "${flag#*=}" in
2631                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2632                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2633                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2634                     armv6*|arm11*)          echo -mv=6   ;;
2635                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2636                                             echo -mv=5e  ;;
2637                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2638                 esac
2639                 ;;
2640             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2641             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2642             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2643             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2644             -msoft-float)   echo --float_support=vfplib       ;;
2645             -O[0-3]|-mf=*)  echo $flag                        ;;
2646             -g)             echo -g -mn                       ;;
2647             -pds=*)         echo $flag                        ;;
2648             -D*|-I*)        echo $flag                        ;;
2649             --gcc|--abi=*)  echo $flag                        ;;
2650             -me)            echo $flag                        ;;
2651         esac
2652     done
2653 }
2654
2655 probe_cc(){
2656     pfx=$1
2657     _cc=$2
2658
2659     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2660     unset _ld_o _ldflags _ld_lib _ld_path
2661     unset _depflags _DEPCMD _DEPFLAGS
2662     _flags_filter=echo
2663
2664     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2665         _type=llvm_gcc
2666         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2667         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2668         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2669         _cflags_speed='-O3'
2670         _cflags_size='-Os'
2671     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2672         _type=gcc
2673         gcc_version=$($_cc --version | head -n1)
2674         gcc_basever=$($_cc -dumpversion)
2675         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2676         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2677         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2678         if ! $_cc -dumpversion | grep -q '^2\.'; then
2679             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2680         fi
2681         _cflags_speed='-O3'
2682         _cflags_size='-Os'
2683     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2684         _type=icc
2685         _ident=$($_cc --version | head -n1)
2686         _depflags='-MMD'
2687         _cflags_speed='-O3'
2688         _cflags_size='-Os'
2689         _cflags_noopt='-O1'
2690     elif $_cc -v 2>&1 | grep -q xlc; then
2691         _type=xlc
2692         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2693         _cflags_speed='-O5'
2694         _cflags_size='-O5 -qcompact'
2695     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2696         _type=ccc
2697         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2698         _DEPFLAGS='-M'
2699         _cflags_speed='-fast'
2700         _cflags_size='-O1'
2701         _flags_filter=ccc_flags
2702     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2703         test -d "$sysroot" || die "No valid sysroot specified."
2704         _type=armcc
2705         _ident=$($_cc --vsn | head -n1)
2706         armcc_conf="$PWD/armcc.conf"
2707         $_cc --arm_linux_configure                 \
2708              --arm_linux_config_file="$armcc_conf" \
2709              --configure_sysroot="$sysroot"        \
2710              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2711              die "Error creating armcc configuration file."
2712         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2713         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2714         as_default="${cross_prefix}gcc"
2715         _depflags='-MMD'
2716         _cflags_speed='-O3'
2717         _cflags_size='-Os'
2718     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2719         _type=tms470
2720         _ident=$($_cc -version | head -n1 | tr -s ' ')
2721         _flags='--gcc --abi=eabi -me'
2722         _cc_e='-ppl -fe=$@'
2723         _cc_o='-fe=$@'
2724         _depflags='-ppa -ppd=$(@:.o=.d)'
2725         _cflags_speed='-O3 -mf=5'
2726         _cflags_size='-O3 -mf=2'
2727         _flags_filter=tms470_flags
2728     elif $_cc -v 2>&1 | grep -q clang; then
2729         _type=clang
2730         _ident=$($_cc --version | head -n1)
2731         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2732         _cflags_speed='-O3'
2733         _cflags_size='-Os'
2734     elif $_cc -V 2>&1 | grep -q Sun; then
2735         _type=suncc
2736         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2737         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2738         _DEPFLAGS='-xM1 -xc99'
2739         _ldflags='-std=c99'
2740         _cflags_speed='-O5'
2741         _cflags_size='-O5 -xspace'
2742         _flags_filter=suncc_flags
2743     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2744         _type=pathscale
2745         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2746         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2747         _cflags_speed='-O2'
2748         _cflags_size='-Os'
2749         _flags_filter='filter_out -Wdisabled-optimization'
2750     elif $_cc -v 2>&1 | grep -q Open64; then
2751         _type=open64
2752         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2753         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2754         _cflags_speed='-O2'
2755         _cflags_size='-Os'
2756         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2757     elif $_cc -V 2>&1 | grep -q Portland; then
2758         _type=pgi
2759         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2760         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2761         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2762         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2763         _cflags_noopt="-O1"
2764         _flags_filter=pgi_flags
2765     elif $_cc 2>&1 | grep -q Microsoft; then
2766         _type=msvc
2767         _ident=$($cc 2>&1 | head -n1)
2768         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2769         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2770         _cflags_speed="-O2"
2771         _cflags_size="-O1"
2772         if $_cc 2>&1 | grep -q Linker; then
2773             _ld_o='-out:$@'
2774         else
2775             _ld_o='-Fe$@'
2776         fi
2777         _cc_o='-Fo$@'
2778         _cc_e='-P -Fi$@'
2779         _flags_filter=msvc_flags
2780         _ld_lib='lib%.a'
2781         _ld_path='-libpath:'
2782         _flags='-nologo'
2783         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2784         if [ $pfx = hostcc ]; then
2785             append _cflags -Dsnprintf=_snprintf
2786         fi
2787     elif $_cc 2>&1 | grep -q Intel; then
2788         _type=icl
2789         _ident=$($cc 2>&1 | head -n1)
2790         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2791         # Not only is O3 broken on 13.x+ but it is slower on all previous
2792         # versions (tested) as well.
2793         _cflags_speed="-O2"
2794         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2795         if $_cc 2>&1 | grep -q Linker; then
2796             _ld_o='-out:$@'
2797         else
2798             _ld_o='-Fe$@'
2799         fi
2800         _cc_o='-Fo$@'
2801         _cc_e='-P'
2802         _flags_filter=icl_flags
2803         _ld_lib='lib%.a'
2804         _ld_path='-libpath:'
2805         # -Qdiag-error to make icl error when seeing certain unknown arguments
2806         _flags='-nologo -Qdiag-error:4044,10157'
2807         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2808         # with MSVC which enables it by default.
2809         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2810         if [ $pfx = hostcc ]; then
2811             append _cflags -Dsnprintf=_snprintf
2812         fi
2813     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2814         _type=cparser
2815         _ident=$($_cc --version | head -n1)
2816         _depflags='-MMD'
2817         _cflags_speed='-O4'
2818         _cflags_size='-O2'
2819         _flags_filter=cparser_flags
2820     fi
2821
2822     eval ${pfx}_type=\$_type
2823     eval ${pfx}_ident=\$_ident
2824 }
2825
2826 set_ccvars(){
2827     eval ${1}_C=\${_cc_c-\${${1}_C}}
2828     eval ${1}_E=\${_cc_e-\${${1}_E}}
2829     eval ${1}_O=\${_cc_o-\${${1}_O}}
2830
2831     if [ -n "$_depflags" ]; then
2832         eval ${1}_DEPFLAGS=\$_depflags
2833     else
2834         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2835         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2836         eval DEP${1}FLAGS=\$_flags
2837     fi
2838 }
2839
2840 probe_cc cc "$cc"
2841 cflags_filter=$_flags_filter
2842 cflags_speed=$_cflags_speed
2843 cflags_size=$_cflags_size
2844 cflags_noopt=$_cflags_noopt
2845 add_cflags $_flags $_cflags
2846 cc_ldflags=$_ldflags
2847 set_ccvars CC
2848
2849 probe_cc hostcc "$host_cc"
2850 host_cflags_filter=$_flags_filter
2851 add_host_cflags  $_flags $_cflags
2852 set_ccvars HOSTCC
2853
2854 test -n "$cc_type" && enable $cc_type ||
2855     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2856
2857 : ${as_default:=$cc}
2858 : ${dep_cc_default:=$cc}
2859 : ${ld_default:=$cc}
2860 : ${host_ld_default:=$host_cc}
2861 set_default ar as dep_cc ld host_ld
2862
2863 probe_cc as "$as"
2864 asflags_filter=$_flags_filter
2865 add_asflags $_flags $_cflags
2866 set_ccvars AS
2867
2868 probe_cc ld "$ld"
2869 ldflags_filter=$_flags_filter
2870 add_ldflags $_flags $_ldflags
2871 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2872 LD_O=${_ld_o-$LD_O}
2873 LD_LIB=${_ld_lib-$LD_LIB}
2874 LD_PATH=${_ld_path-$LD_PATH}
2875
2876 probe_cc hostld "$host_ld"
2877 host_ldflags_filter=$_flags_filter
2878 add_host_ldflags $_flags $_ldflags
2879 HOSTLD_O=${_ld_o-$HOSTLD_O}
2880
2881 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2882     probe_cc depcc "$dep_cc"
2883     CCDEP=${_DEPCMD:-$DEPCMD}
2884     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2885     DEPCCFLAGS=$_flags
2886 fi
2887
2888 if $ar 2>&1 | grep -q Microsoft; then
2889     arflags="-nologo"
2890     ar_o='-out:$@'
2891 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2892     arflags="rq"
2893     ar_o='$@'
2894 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2895     arflags='-Xany -r -c'
2896     ar_o='$@'
2897 else
2898     arflags="rc"
2899     ar_o='$@'
2900 fi
2901
2902 add_cflags $extra_cflags
2903 add_asflags $extra_cflags
2904
2905 if test -n "$sysroot"; then
2906     case "$cc_type" in
2907         gcc|llvm_gcc|clang)
2908             add_cppflags --sysroot="$sysroot"
2909             add_ldflags --sysroot="$sysroot"
2910         ;;
2911         tms470)
2912             add_cppflags -I"$sysinclude"
2913             add_ldflags  --sysroot="$sysroot"
2914         ;;
2915     esac
2916 fi
2917
2918 if test "$cpu" = host; then
2919     enabled cross_compile &&
2920         die "--cpu=host makes no sense when cross-compiling."
2921
2922     case "$cc_type" in
2923         gcc|llvm_gcc)
2924             check_native(){
2925                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2926                 sed -n "/cc1.*$1=/{
2927                             s/.*$1=\\([^ ]*\\).*/\\1/
2928                             p
2929                             q
2930                         }" $TMPE
2931             }
2932             cpu=$(check_native -march || check_native -mcpu)
2933         ;;
2934     esac
2935
2936     test "${cpu:-host}" = host &&
2937         die "--cpu=host not supported with compiler $cc"
2938 fi
2939
2940 # Deal with common $arch aliases
2941 case "$arch" in
2942     aarch64|arm64)
2943         arch="aarch64"
2944     ;;
2945     arm*)
2946         arch="arm"
2947     ;;
2948     mips*|IP*)
2949         arch="mips"
2950     ;;
2951     parisc*|hppa*)
2952         arch="parisc"
2953     ;;
2954     "Power Macintosh"|ppc*|powerpc*)
2955         arch="ppc"
2956     ;;
2957     s390|s390x)
2958         arch="s390"
2959     ;;
2960     sh4|sh)
2961         arch="sh4"
2962     ;;
2963     sun4u|sparc*)
2964         arch="sparc"
2965     ;;
2966     tilegx|tile-gx)
2967         arch="tilegx"
2968     ;;
2969     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2970         arch="x86"
2971     ;;
2972 esac
2973
2974 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2975 enable $arch
2976
2977 # Add processor-specific flags
2978 if enabled aarch64; then
2979
2980     case $cpu in
2981         armv*)
2982             cpuflags="-march=$cpu"
2983         ;;
2984         *)
2985             cpuflags="-mcpu=$cpu"
2986         ;;
2987     esac
2988
2989 elif enabled alpha; then
2990
2991     cpuflags="-mcpu=$cpu"
2992
2993 elif enabled arm; then
2994
2995     check_arm_arch() {
2996         check_cpp_condition stddef.h \
2997             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2998             $cpuflags
2999     }
3000
3001     probe_arm_arch() {
3002         if   check_arm_arch 4;        then echo armv4;
3003         elif check_arm_arch 4T;       then echo armv4t;
3004         elif check_arm_arch 5;        then echo armv5;
3005         elif check_arm_arch 5E;       then echo armv5e;
3006         elif check_arm_arch 5T;       then echo armv5t;
3007         elif check_arm_arch 5TE;      then echo armv5te;
3008         elif check_arm_arch 5TEJ;     then echo armv5te;
3009         elif check_arm_arch 6;        then echo armv6;
3010         elif check_arm_arch 6J;       then echo armv6j;
3011         elif check_arm_arch 6K;       then echo armv6k;
3012         elif check_arm_arch 6Z;       then echo armv6z;
3013         elif check_arm_arch 6ZK;      then echo armv6zk;
3014         elif check_arm_arch 6T2;      then echo armv6t2;
3015         elif check_arm_arch 7;        then echo armv7;
3016         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3017         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3018         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3019         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3020         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3021         fi
3022     }
3023
3024     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3025
3026     case $cpu in
3027         armv*)
3028             cpuflags="-march=$cpu"
3029             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3030         ;;
3031         *)
3032             cpuflags="-mcpu=$cpu"
3033             case $cpu in
3034                 cortex-a*)                               subarch=armv7a  ;;
3035                 cortex-r*)                               subarch=armv7r  ;;
3036                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3037                 arm11*)                                  subarch=armv6   ;;
3038                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3039                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3040                 *)                             subarch=$(probe_arm_arch) ;;
3041             esac
3042         ;;
3043     esac
3044
3045     case "$subarch" in
3046         armv5t*)    enable fast_clz                ;;
3047         armv[6-8]*) enable fast_clz fast_unaligned ;;
3048     esac
3049
3050 elif enabled avr32; then
3051
3052     case $cpu in
3053         ap7[02]0[0-2])
3054             subarch="avr32_ap"
3055             cpuflags="-mpart=$cpu"
3056         ;;
3057         ap)
3058             subarch="avr32_ap"
3059             cpuflags="-march=$cpu"
3060         ;;
3061         uc3[ab]*)
3062             subarch="avr32_uc"
3063             cpuflags="-mcpu=$cpu"
3064         ;;
3065         uc)
3066             subarch="avr32_uc"
3067             cpuflags="-march=$cpu"
3068         ;;
3069     esac
3070
3071 elif enabled bfin; then
3072
3073     cpuflags="-mcpu=$cpu"
3074
3075 elif enabled mips; then
3076
3077     cpuflags="-march=$cpu"
3078
3079 elif enabled ppc; then
3080
3081     case $(tolower $cpu) in
3082         601|ppc601|powerpc601)
3083             cpuflags="-mcpu=601"
3084             disable altivec
3085         ;;
3086         603*|ppc603*|powerpc603*)
3087             cpuflags="-mcpu=603"
3088             disable altivec
3089         ;;
3090         604*|ppc604*|powerpc604*)
3091             cpuflags="-mcpu=604"
3092             disable altivec
3093         ;;
3094         g3|75*|ppc75*|powerpc75*)
3095             cpuflags="-mcpu=750"
3096             disable altivec
3097         ;;
3098         g4|745*|ppc745*|powerpc745*)
3099             cpuflags="-mcpu=7450"
3100         ;;
3101         74*|ppc74*|powerpc74*)
3102             cpuflags="-mcpu=7400"
3103         ;;
3104         g5|970|ppc970|powerpc970)
3105             cpuflags="-mcpu=970"
3106         ;;
3107         power[3-7]*)
3108             cpuflags="-mcpu=$cpu"
3109         ;;
3110         cell)
3111             cpuflags="-mcpu=cell"
3112             enable ldbrx
3113         ;;
3114         e500mc)
3115             cpuflags="-mcpu=e500mc"
3116             disable altivec
3117         ;;
3118         e500v2)
3119             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3120             disable altivec
3121         ;;
3122         e500)
3123             cpuflags="-mcpu=8540 -mhard-float"
3124             disable altivec
3125         ;;
3126     esac
3127
3128 elif enabled sparc; then
3129
3130     case $cpu in
3131         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3132             cpuflags="-mcpu=$cpu"
3133             disable vis
3134         ;;
3135         ultrasparc*|niagara[234])
3136             cpuflags="-mcpu=$cpu"
3137         ;;
3138     esac
3139
3140 elif enabled x86; then
3141
3142     case $cpu in
3143         i[345]86|pentium)
3144             cpuflags="-march=$cpu"
3145             disable mmx
3146         ;;
3147         # targets that do NOT support nopl and conditional mov (cmov)
3148         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3149             cpuflags="-march=$cpu"
3150             disable i686
3151         ;;
3152         # targets that do support nopl and conditional mov (cmov)
3153         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3154             cpuflags="-march=$cpu"
3155             enable i686
3156             enable fast_cmov
3157         ;;
3158         # targets that do support conditional mov but on which it's slow
3159         pentium4|pentium4m|prescott|nocona)
3160             cpuflags="-march=$cpu"
3161             enable i686
3162             disable fast_cmov
3163         ;;
3164     esac
3165
3166 fi
3167
3168 if [ "$cpu" != generic ]; then
3169     add_cflags  $cpuflags
3170     add_asflags $cpuflags
3171 fi
3172
3173 # compiler sanity check
3174 check_exec <<EOF
3175 int main(void){ return 0; }
3176 EOF
3177 if test "$?" != 0; then
3178     echo "$cc is unable to create an executable file."
3179     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3180         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3181         echo "Only do this if you know what cross compiling means."
3182     fi
3183     die "C compiler test failed."
3184 fi
3185
3186 add_cppflags -D_ISOC99_SOURCE
3187 check_cflags -std=c99
3188 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3189 #include <stdlib.h>
3190 EOF
3191 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3192 #include <stdlib.h>
3193 EOF
3194
3195 add_host_cppflags -D_ISOC99_SOURCE
3196 check_host_cflags -std=c99
3197 check_host_cflags -Wall
3198 check_host_cflags -O3
3199
3200 check_64bit(){
3201     arch32=$1
3202     arch64=$2
3203     expr=$3
3204     check_code cc "" "int test[2*($expr) - 1]" &&
3205         subarch=$arch64 || subarch=$arch32
3206 }
3207
3208 case "$arch" in
3209     aarch64|alpha|ia64)
3210         spic=$shared
3211     ;;
3212     mips)
3213         check_64bit mips mips64 '_MIPS_SIM > 1'
3214         spic=$shared
3215     ;;
3216     parisc)
3217         check_64bit parisc parisc64 'sizeof(void *) > 4'
3218         spic=$shared
3219     ;;
3220     ppc)
3221         check_64bit ppc ppc64 'sizeof(void *) > 4'
3222         spic=$shared
3223     ;;
3224     sparc)
3225         check_64bit sparc sparc64 'sizeof(void *) > 4'
3226         spic=$shared
3227     ;;
3228     x86)
3229         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3230         if test "$subarch" = "x86_64"; then
3231             spic=$shared
3232         fi
3233     ;;
3234 esac
3235
3236 enable $subarch
3237 enabled spic && enable_weak pic
3238
3239 # OS specific
3240 case $target_os in
3241     aix)
3242         SHFLAGS=-shared
3243         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3244         enabled shared && add_ldflags -Wl,-brtl
3245         ;;
3246     haiku)
3247         prefix_default="/boot/common"
3248         network_extralibs="-lnetwork"
3249         host_libs=
3250         ;;
3251     sunos)
3252         SHFLAGS='-shared -Wl,-h,$$(@F)'
3253         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3254         network_extralibs="-lsocket -lnsl"
3255         # When using suncc to build, the Solaris linker will mark
3256         # an executable with each instruction set encountered by
3257         # the Solaris assembler.  As our libraries contain their own
3258         # guards for processor-specific code, instead suppress
3259         # generation of the HWCAPS ELF section on Solaris x86 only.
3260         enabled_all suncc x86 &&
3261             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3262             add_ldflags -Wl,-M,mapfile
3263         nm_default='nm -P -g'
3264         ;;
3265     netbsd)
3266         disable symver
3267         oss_indev_extralibs="-lossaudio"
3268         oss_outdev_extralibs="-lossaudio"
3269         ;;
3270     openbsd|bitrig)
3271         disable symver
3272         SHFLAGS='-shared'
3273         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3274         SLIB_INSTALL_LINKS=
3275         oss_indev_extralibs="-lossaudio"
3276         oss_outdev_extralibs="-lossaudio"
3277         ;;
3278     dragonfly)
3279         disable symver
3280         ;;
3281     freebsd)
3282         ;;
3283     bsd/os)
3284         add_extralibs -lpoll -lgnugetopt
3285         ;;
3286     darwin)
3287         gas="gas-preprocessor.pl $cc"
3288         enabled ppc && add_asflags -force_cpusubtype_ALL
3289         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3290         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3291         add_ldflags -Wl,-dynamic,-search_paths_first
3292         SLIBSUF=".dylib"
3293         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3294         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3295         objformat="macho"
3296         enabled x86_64 && objformat="macho64"
3297         enabled_any pic shared ||
3298             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3299         ;;
3300     mingw32*)
3301         if test $target_os = "mingw32ce"; then
3302             disable network
3303         else
3304             target_os=mingw32
3305         fi
3306         LIBTARGET=i386
3307         if enabled x86_64; then
3308             LIBTARGET="i386:x86-64"
3309         elif enabled arm; then
3310             LIBTARGET=arm-wince
3311         fi
3312         check_ldflags -Wl,--nxcompat
3313         check_ldflags -Wl,--dynamicbase
3314         shlibdir_default="$bindir_default"
3315         SLIBPREF=""
3316         SLIBSUF=".dll"
3317         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3318         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3319         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3320         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3321         SLIB_INSTALL_LINKS=
3322         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3323         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3324         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3325         objformat="win32"
3326         dlltool="${cross_prefix}dlltool"
3327         ranlib=:
3328         enable dos_paths
3329         ;;
3330     win32|win64)
3331         disable symver
3332         if enabled shared; then
3333             # Link to the import library instead of the normal static library
3334             # for shared libs.
3335             LD_LIB='%.lib'
3336             # Cannot build both shared and static libs with MSVC or icl.
3337             disable static
3338         fi
3339         shlibdir_default="$bindir_default"
3340         SLIBPREF=""
3341         SLIBSUF=".dll"
3342         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3343         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3344         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3345         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3346         SLIB_INSTALL_LINKS=
3347         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3348         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3349         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3350         objformat="win32"
3351         ranlib=:
3352         enable dos_paths
3353         ;;
3354     cygwin*)
3355         target_os=cygwin
3356         shlibdir_default="$bindir_default"
3357         SLIBPREF="cyg"
3358         SLIBSUF=".dll"
3359         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3360         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3361         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3362         SLIB_INSTALL_LINKS=
3363         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3364         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3365         objformat="win32"
3366         enable dos_paths
3367         ;;
3368     *-dos|freedos|opendos)
3369         network_extralibs="-lsocket"
3370         objformat="coff"
3371         enable dos_paths
3372         add_cppflags -U__STRICT_ANSI__
3373         ;;
3374     linux)
3375         enable dv1394
3376         ;;
3377     irix*)
3378         target_os=irix
3379         ranlib="echo ignoring ranlib"
3380         ;;
3381     os/2*)
3382         ln_s="cp -f"
3383         objformat="aout"
3384         add_cppflags -D_GNU_SOURCE
3385         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3386         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3387         LIBSUF="_s.a"
3388         SLIBPREF=""
3389         SLIBSUF=".dll"
3390         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3391         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3392         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3393             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3394             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3395             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3396             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3397             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3398         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3399             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3400         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3401         enable dos_paths
3402         ;;
3403     gnu/kfreebsd)
3404         add_cppflags -D_BSD_SOURCE
3405         ;;
3406     gnu)
3407         ;;
3408     qnx)
3409         add_cppflags -D_QNX_SOURCE
3410         network_extralibs="-lsocket"
3411         ;;
3412     symbian)
3413         SLIBSUF=".dll"
3414         enable dos_paths
3415         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3416         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3417         add_ldflags -Wl,--target1-abs,--no-undefined \
3418                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3419                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3420         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3421                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3422                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3423         ;;
3424     osf1)
3425         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3426         ;;
3427     minix)
3428         ;;
3429     plan9)
3430         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3431                      -D_REENTRANT_SOURCE        \
3432                      -D_RESEARCH_SOURCE         \
3433                      -DFD_SETSIZE=96            \
3434                      -DHAVE_SOCK_OPTS
3435         add_compat strtod.o strtod=avpriv_strtod
3436         network_extralibs='-lbsd'
3437         exeobjs=compat/plan9/main.o
3438         disable avserver
3439         cp_f='cp'
3440         ;;
3441     none)
3442         ;;
3443     *)
3444         die "Unknown OS '$target_os'."
3445         ;;
3446 esac
3447
3448 # determine libc flavour
3449
3450 probe_libc(){
3451     pfx=$1
3452     pfx_no_=${pfx%_}
3453     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3454     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3455         eval ${pfx}libc_type=uclibc
3456         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3457     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3458         eval ${pfx}libc_type=glibc
3459         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3460     # MinGW headers can be installed on Cygwin, so check for newlib first.
3461     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3462         eval ${pfx}libc_type=newlib
3463         add_${pfx}cppflags -U__STRICT_ANSI__
3464     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3465     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3466         eval ${pfx}libc_type=mingw64
3467         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3468         eval test \$${pfx_no_}cc_type = "gcc" &&
3469             add_${pfx}cppflags -D__printf__=__gnu_printf__
3470     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3471          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3472         eval ${pfx}libc_type=mingw32
3473         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3474             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3475             die "ERROR: MinGW32 runtime version must be >= 3.15."
3476         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3477         eval test \$${pfx_no_}cc_type = "gcc" &&
3478             add_${pfx}cppflags -D__printf__=__gnu_printf__
3479     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3480         eval ${pfx}libc_type=msvcrt
3481         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3482         # 0x601 by default unless something else is set by the user.
3483         # This can easily lead to us detecting functions only present
3484         # in such new versions and producing binaries requiring windows 7.0.
3485         # Therefore explicitly set the default to XP unless the user has
3486         # set something else on the command line.
3487         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3488             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3489     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3490         eval ${pfx}libc_type=klibc
3491     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3492         eval ${pfx}libc_type=bionic
3493     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3494         eval ${pfx}libc_type=solaris
3495         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3496     fi
3497 }
3498
3499 probe_libc
3500 test -n "$libc_type" && enable libc_$libc_type
3501 probe_libc host_
3502 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3503
3504 case $libc_type in
3505     bionic)
3506         add_compat strtod.o strtod=avpriv_strtod
3507         ;;
3508     msvcrt)
3509         add_compat strtod.o strtod=avpriv_strtod
3510         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3511                                      _snprintf=avpriv_snprintf  \
3512                                      vsnprintf=avpriv_vsnprintf
3513         ;;
3514 esac
3515
3516 # hacks for compiler/libc/os combinations
3517
3518 if enabled_all tms470 libc_glibc; then
3519     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3520     add_cppflags -D__USER_LABEL_PREFIX__=
3521     add_cppflags -D__builtin_memset=memset
3522     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3523     add_cflags   -pds=48    # incompatible redefinition of macro
3524 fi
3525
3526 if enabled_all ccc libc_glibc; then
3527     add_ldflags -Wl,-z,now  # calls to libots crash without this
3528 fi
3529
3530 esc(){
3531     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3532 }
3533
3534 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3535
3536 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3537
3538 set_default $PATHS_LIST
3539 set_default nm
3540
3541 # we need to build at least one lib type
3542 if ! enabled_any static shared; then
3543     cat <<EOF
3544 At least one library type must be built.
3545 Specify --enable-static to build the static libraries or --enable-shared to
3546 build the shared libraries as well. To only build the shared libraries specify
3547 --disable-static in addition to --enable-shared.
3548 EOF
3549     exit 1;
3550 fi
3551
3552 die_license_disabled() {
3553     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3554 }
3555
3556 die_license_disabled gpl libcdio
3557 die_license_disabled gpl libx264
3558 die_license_disabled gpl libx265
3559 die_license_disabled gpl libxavs
3560 die_license_disabled gpl libxvid
3561 die_license_disabled gpl x11grab
3562
3563 die_license_disabled nonfree libfaac
3564 die_license_disabled nonfree libfdk_aac
3565 die_license_disabled nonfree openssl
3566
3567 die_license_disabled version3 libopencore_amrnb
3568 die_license_disabled version3 libopencore_amrwb
3569 die_license_disabled version3 libvo_aacenc
3570 die_license_disabled version3 libvo_amrwbenc
3571
3572 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3573
3574 disabled optimizations || check_cflags -fomit-frame-pointer
3575
3576 enable_weak_pic() {
3577     disabled pic && return
3578     enable pic
3579     add_cppflags -DPIC
3580     case "$target_os" in
3581     mingw*|cygwin*)
3582         ;;
3583     *)
3584         add_cflags -fPIC
3585         ;;
3586     esac
3587     add_asflags  -fPIC
3588 }
3589
3590 enabled pic && enable_weak_pic
3591
3592 check_cc <<EOF || die "Symbol mangling check failed."
3593 int ff_extern;
3594 EOF
3595 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3596 extern_prefix=${sym%%ff_extern*}
3597
3598 check_cc <<EOF && enable_weak inline_asm
3599 void foo(void) { __asm__ volatile ("" ::); }
3600 EOF
3601
3602 _restrict=
3603 for restrict_keyword in restrict __restrict__ __restrict; do
3604     check_cc <<EOF && _restrict=$restrict_keyword && break
3605 void foo(char * $restrict_keyword p);
3606 EOF
3607 done
3608
3609 check_cc <<EOF && enable pragma_deprecated
3610 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3611 EOF
3612
3613 check_cc <<EOF && enable attribute_packed
3614 struct { int x; } __attribute__((packed)) x;
3615 EOF
3616
3617 check_cc <<EOF && enable attribute_may_alias
3618 union { int x; } __attribute__((may_alias)) x;
3619 EOF
3620
3621 check_cc <<EOF || die "endian test failed"
3622 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3623 EOF
3624 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3625
3626 check_inline_asm inline_asm_labels '"1:\n"'
3627
3628 if enabled aarch64; then
3629     # internal assembler in clang 3.3 does not support this instruction
3630     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3631     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3632
3633     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3634
3635 elif enabled alpha; then
3636
3637     check_cflags -mieee
3638
3639 elif enabled arm; then
3640
3641     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3642     enabled thumb && check_cflags -mthumb || check_cflags -marm
3643     nogas=die
3644
3645     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3646         enable vfp_args
3647     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3648         case "${cross_prefix:-$cc}" in
3649             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3650             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3651 __asm__ (".eabi_attribute 28, 1");
3652 int main(void) { return 0; }
3653 EOF
3654         esac
3655         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3656     fi
3657
3658     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3659     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3660     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3661     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3662     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3663     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3664
3665     [ $target_os = linux ] ||
3666         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3667             $ARCH_EXT_LIST_ARM
3668
3669     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3670
3671     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3672
3673 elif enabled mips; then
3674
3675     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3676
3677 elif enabled parisc; then
3678
3679     if enabled gcc; then
3680         case $($cc -dumpversion) in
3681             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3682         esac
3683     fi
3684
3685 elif enabled ppc; then
3686
3687     enable local_aligned_8 local_aligned_16
3688
3689     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3690     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3691     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3692     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3693
3694     # AltiVec flags: The FSF version of GCC differs from the Apple version
3695     if enabled altivec; then
3696         nogas=warn
3697         check_cflags -maltivec -mabi=altivec &&
3698         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3699         check_cflags -faltivec
3700
3701         # check if our compiler supports Motorola AltiVec C API
3702         check_cc <<EOF || disable altivec
3703 $inc_altivec_h
3704 int main(void) {
3705     vector signed int v1 = (vector signed int) { 0 };
3706     vector signed int v2 = (vector signed int) { 1 };
3707     v1 = vec_add(v1, v2);
3708     return 0;
3709 }
3710 EOF
3711
3712         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3713     fi
3714
3715 elif enabled sparc; then
3716
3717     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3718
3719 elif enabled x86; then
3720
3721     check_builtin rdtsc    intrin.h   "__rdtsc()"
3722     check_builtin mm_empty mmintrin.h "_mm_empty()"
3723
3724     enable local_aligned_8 local_aligned_16
3725
3726     # check whether EBP is available on x86
3727     # As 'i' is stored on the stack, this program will crash
3728     # if the base pointer is used to access it because the
3729     # base pointer is cleared in the inline assembly code.
3730     check_exec_crash <<EOF && enable ebp_available
3731 volatile int i=0;
3732 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3733 return i;
3734 EOF
3735
3736     # check whether EBX is available on x86
3737     check_inline_asm ebx_available '""::"b"(0)' &&
3738         check_inline_asm ebx_available '"":::"%ebx"'
3739
3740     # check whether xmm clobbers are supported
3741     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3742
3743     # check whether binutils is new enough to compile SSSE3/MMXEXT
3744     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3745     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3746
3747     if ! disabled_any asm mmx yasm; then
3748         if check_cmd $yasmexe --version; then
3749             enabled x86_64 && yasm_extra="-m amd64"
3750             yasm_debug="-g dwarf2"
3751         elif check_cmd nasm -v; then
3752             yasmexe=nasm
3753             yasm_debug="-g -F dwarf"
3754             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3755         fi
3756
3757         YASMFLAGS="-f $objformat $yasm_extra"
3758         enabled pic               && append YASMFLAGS "-DPIC"
3759         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3760         case "$objformat" in
3761             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3762         esac
3763
3764         check_yasm "movbe ecx, [5]" && enable yasm ||
3765             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3766         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3767         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3768         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3769         check_yasm "CPU amdnop" || disable cpunop
3770     fi
3771
3772     case "$cpu" in
3773         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3774             disable fast_clz
3775         ;;
3776     esac
3777
3778 fi
3779
3780 if enabled asm; then
3781     as=${gas:=$as}
3782     check_as <<EOF && enable gnu_as || \
3783         $nogas "GNU assembler not found, install gas-preprocessor"
3784 .macro m n
3785 \n: .int 0
3786 .endm
3787 m x
3788 EOF
3789 fi
3790
3791 check_ldflags -Wl,--as-needed
3792
3793 if check_func dlopen; then
3794     ldl=
3795 elif check_func dlopen -ldl; then
3796     ldl=-ldl
3797 fi
3798
3799 if ! disabled network; then
3800     check_type "sys/types.h sys/socket.h" socklen_t
3801     check_type netdb.h "struct addrinfo"
3802     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3803     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3804     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3805     check_type netinet/in.h "struct sockaddr_in6"
3806     check_type poll.h "struct pollfd"
3807     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3808     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3809     check_type netinet/sctp.h "struct sctp_event_subscribe"
3810     check_func getaddrinfo $network_extralibs
3811     check_func getservbyport $network_extralibs
3812     check_func inet_aton $network_extralibs
3813     # Prefer arpa/inet.h over winsock2
3814     if check_header arpa/inet.h ; then
3815         check_func closesocket
3816     elif check_header winsock2.h ; then
3817         check_func_headers winsock2.h closesocket -lws2 &&
3818             network_extralibs="-lws2" ||
3819         { check_func_headers winsock2.h closesocket -lws2_32 &&
3820             network_extralibs="-lws2_32"; } || disable winsock2_h network
3821         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3822         check_type ws2tcpip.h socklen_t
3823         check_type ws2tcpip.h "struct addrinfo"
3824         check_type ws2tcpip.h "struct group_source_req"
3825         check_type ws2tcpip.h "struct ip_mreq_source"
3826         check_type ws2tcpip.h "struct ipv6_mreq"
3827         check_type winsock2.h "struct pollfd"
3828         check_type ws2tcpip.h "struct sockaddr_in6"
3829         check_type ws2tcpip.h "struct sockaddr_storage"
3830         check_struct winsock2.h "struct sockaddr" sa_len
3831     else
3832         disable network
3833     fi
3834 fi
3835
3836 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3837 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3838
3839 check_func  fcntl
3840 check_func  fork
3841 check_func_headers stdlib.h getenv
3842 check_func  gethrtime
3843 check_func  getopt
3844 check_func  getrusage
3845 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3846 check_func  gettimeofday
3847 check_func  isatty
3848 check_func  localtime_r
3849 check_func  ${malloc_prefix}memalign            && enable memalign
3850 check_func  mkstemp
3851 check_func  mmap
3852 check_func  mprotect
3853 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3854 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3855 check_func  setrlimit
3856 check_func  strerror_r
3857 check_func  strptime
3858 check_func  strtok_r
3859 check_func  sched_getaffinity
3860 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3861 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3862 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3863 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3864 check_func  sysconf
3865 check_func  sysctl
3866 check_func  usleep
3867 check_func_headers io.h setmode
3868 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3869 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3870 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3871 check_func_headers windows.h GetProcessAffinityMask
3872 check_func_headers windows.h GetProcessTimes
3873 check_func_headers windows.h GetSystemTimeAsFileTime
3874 check_func_headers windows.h MapViewOfFile
3875 check_func_headers windows.h SetConsoleTextAttribute
3876 check_func_headers windows.h Sleep
3877 check_func_headers windows.h VirtualAlloc
3878
3879 check_header direct.h
3880 check_header dlfcn.h
3881 check_header dxva.h
3882 check_header dxva2api.h
3883 check_header io.h
3884 check_header malloc.h
3885 check_header poll.h
3886 check_header sys/mman.h
3887 check_header sys/param.h
3888 check_header sys/resource.h
3889 check_header sys/select.h
3890 check_header sys/time.h
3891 check_header sys/un.h
3892 check_header unistd.h
3893 check_header vdpau/vdpau.h
3894 check_header vdpau/vdpau_x11.h
3895 check_header VideoDecodeAcceleration/VDADecoder.h
3896 check_header windows.h
3897 check_header X11/extensions/XvMClib.h
3898
3899 if ! disabled w32threads && ! enabled pthreads; then
3900     check_func_headers "windows.h process.h" _beginthreadex &&
3901         enable w32threads || disable w32threads
3902 fi
3903
3904 # check for some common methods of building with pthread support
3905 # do this before the optional library checks as some of them require pthreads
3906 if ! disabled pthreads && ! enabled w32threads; then
3907     enable pthreads
3908     if check_func pthread_join -pthread; then
3909         add_cflags -pthread
3910         add_extralibs -pthread
3911     elif check_func pthread_join -pthreads; then
3912         add_cflags -pthreads
3913         add_extralibs -pthreads
3914     elif check_func pthread_join -lpthreadGC2; then
3915         add_extralibs -lpthreadGC2
3916     elif check_lib pthread.h pthread_join -lpthread; then
3917         :
3918     elif ! check_func pthread_join; then
3919         disable pthreads
3920     fi
3921 fi
3922
3923 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3924 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3925
3926 check_lib math.h sin -lm && LIBM="-lm"
3927 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3928
3929 atan2f_args=2
3930 ldexpf_args=2
3931 powf_args=2
3932
3933 for func in $MATH_FUNCS; do
3934     eval check_mathfunc $func \${${func}_args:-1}
3935 done
3936
3937 # these are off by default, so fail if requested and not available
3938 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
3939                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
3940                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
3941 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3942 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3943 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3944 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3945 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
3946 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3947                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3948                                done || die "ERROR: libgsm not found"; }
3949 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3950 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3951 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3952 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3953 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3954 enabled libopenjpeg       && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3955 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3956 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3957 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3958 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3959 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3960 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3961 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3962 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3963 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3964 enabled libvpx            && {
3965     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3966                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3967     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3968                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3969     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3970     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3971 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3972 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
3973 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3974                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3975                                die "ERROR: libx264 version must be >= 0.118."; }
3976 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
3977                              { check_cpp_condition x265.h "X265_BUILD >= 7" ||
3978                                die "ERROR: libx265 version must be >= 7."; }
3979 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3980 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3981 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3982                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3983                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3984                                die "ERROR: openssl not found"; }
3985
3986 if enabled gnutls; then
3987     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3988     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3989 fi
3990
3991 # libdc1394 check
3992 if enabled libdc1394; then
3993     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3994         enable libdc1394_2; } ||
3995     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3996         enable libdc1394_1; } ||
3997     die "ERROR: No version of libdc1394 found "
3998 fi
3999
4000 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4001     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4002     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4003     enable sdl
4004 fi
4005
4006 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4007 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4008
4009 check_header linux/fb.h
4010 check_header linux/videodev2.h
4011 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4012
4013 check_header sys/videoio.h
4014
4015 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4016 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4017 # w32api 3.12 had it defined wrong
4018 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4019
4020 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4021 { check_header dev/bktr/ioctl_meteor.h &&
4022   check_header dev/bktr/ioctl_bt848.h; } ||
4023 { check_header machine/ioctl_meteor.h &&
4024   check_header machine/ioctl_bt848.h; } ||
4025 { check_header dev/video/meteor/ioctl_meteor.h &&
4026   check_header dev/video/bktr/ioctl_bt848.h; } ||
4027 check_header dev/ic/bt8xx.h
4028
4029 check_header sndio.h
4030 check_header sys/soundcard.h
4031 check_header soundcard.h
4032
4033 enabled_any alsa_indev alsa_outdev &&
4034     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4035
4036 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4037     check_func jack_port_get_latency_range -ljack
4038
4039 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4040
4041 if enabled libcdio; then
4042     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4043     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4044 fi
4045
4046 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4047
4048 enabled x11grab                                           &&
4049 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4050 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4051 { enabled xlib || die "ERROR: Xlib not found"; }
4052
4053 enabled vdpau &&
4054     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4055     disable vdpau
4056
4057 enabled vdpau && enabled xlib &&
4058     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4059     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4060     enable vdpau_x11
4061
4062 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4063
4064 # add some useful compiler flags if supported
4065 check_cflags -Wdeclaration-after-statement
4066 check_cflags -Wall
4067 check_cflags -Wdisabled-optimization
4068 check_cflags -Wpointer-arith
4069 check_cflags -Wredundant-decls
4070 check_cflags -Wcast-qual
4071 check_cflags -Wwrite-strings
4072 check_cflags -Wtype-limits
4073 check_cflags -Wundef
4074 check_cflags -Wmissing-prototypes
4075 check_cflags -Wstrict-prototypes
4076 enabled extra_warnings && check_cflags -Winline
4077
4078 check_disable_warning(){
4079     warning_flag=-W${1#-Wno-}
4080     test_cflags $warning_flag && add_cflags $1
4081 }
4082
4083 check_disable_warning -Wno-parentheses
4084 check_disable_warning -Wno-switch
4085 check_disable_warning -Wno-format-zero-length
4086 check_disable_warning -Wno-pointer-sign
4087
4088 # add some linker flags
4089 check_ldflags -Wl,--warn-common
4090 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4091 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4092
4093 # add some strip flags
4094 # -wN '..@*' is more selective than -x, but not available everywhere.
4095 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4096
4097 enabled neon_clobber_test &&
4098     check_ldflags -Wl,--wrap,avcodec_open2              \
4099                   -Wl,--wrap,avcodec_decode_audio4      \
4100                   -Wl,--wrap,avcodec_decode_video2      \
4101                   -Wl,--wrap,avcodec_decode_subtitle2   \
4102                   -Wl,--wrap,avcodec_encode_audio2      \
4103                   -Wl,--wrap,avcodec_encode_video2      \
4104                   -Wl,--wrap,avcodec_encode_subtitle    \
4105                   -Wl,--wrap,avresample_convert ||
4106     disable neon_clobber_test
4107
4108 enabled xmm_clobber_test &&
4109     check_ldflags -Wl,--wrap,avcodec_open2              \
4110                   -Wl,--wrap,avcodec_decode_audio4      \
4111                   -Wl,--wrap,avcodec_decode_video2      \
4112                   -Wl,--wrap,avcodec_decode_subtitle2   \
4113                   -Wl,--wrap,avcodec_encode_audio2      \
4114                   -Wl,--wrap,avcodec_encode_video2      \
4115                   -Wl,--wrap,avcodec_encode_subtitle    \
4116                   -Wl,--wrap,avresample_convert         \
4117                   -Wl,--wrap,sws_scale ||
4118     disable xmm_clobber_test
4119
4120 echo "X{};" > $TMPV
4121 if test_ldflags -Wl,--version-script,$TMPV; then
4122     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4123     check_cc <<EOF && enable symver_asm_label
4124 void ff_foo(void) __asm__ ("av_foo@VERSION");
4125 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4126 EOF
4127     check_cc <<EOF && enable symver_gnu_asm
4128 __asm__(".symver ff_foo,av_foo@VERSION");
4129 void ff_foo(void) {}
4130 EOF
4131 fi
4132
4133 if [ -z "$optflags" ]; then
4134     if enabled small; then
4135         optflags=$cflags_size
4136     elif enabled optimizations; then
4137         optflags=$cflags_speed
4138     else
4139         optflags=$cflags_noopt
4140     fi
4141 fi
4142
4143 check_optflags(){
4144     check_cflags "$@"
4145     enabled lto && check_ldflags "$@"
4146 }
4147
4148
4149 if enabled lto; then
4150     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4151     check_cflags  -flto
4152     check_ldflags -flto $cpuflags
4153 fi
4154
4155 check_optflags $optflags
4156 check_optflags -fno-math-errno
4157 check_optflags -fno-signed-zeros
4158
4159 if enabled icc; then
4160     # Just warnings, no remarks
4161     check_cflags -w1
4162     # -wd: Disable following warnings
4163     # 144, 167, 556: -Wno-pointer-sign
4164     # 1292: attribute "foo" ignored
4165     # 1419: external declaration in primary source file
4166     # 10006: ignoring unknown option -fno-signed-zeros
4167     # 10148: ignoring unknown option -Wno-parentheses
4168     # 10156: ignoring option '-W'; no argument required
4169     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4170     # 11030: Warning unknown option --as-needed
4171     # 10156: ignoring option '-export'; no argument required
4172     check_ldflags -wd10156,11030
4173     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4174     enable ebp_available
4175     if enabled x86_32; then
4176         icc_version=$($cc -dumpversion)
4177         test ${icc_version%%.*} -ge 11 &&
4178             check_cflags -falign-stack=maintain-16-byte ||
4179             disable aligned_stack
4180     fi
4181 elif enabled ccc; then
4182     # disable some annoying warnings
4183     add_cflags -msg_disable bitnotint
4184     add_cflags -msg_disable mixfuncvoid
4185     add_cflags -msg_disable nonstandcast
4186     add_cflags -msg_disable unsupieee
4187 elif enabled gcc; then
4188     check_optflags -fno-tree-vectorize
4189     check_cflags -Werror=implicit-function-declaration
4190     check_cflags -Werror=missing-prototypes
4191     check_cflags -Werror=return-type
4192     check_cflags -Werror=declaration-after-statement
4193     check_cflags -Werror=vla
4194     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4195 elif enabled llvm_gcc; then
4196     check_cflags -mllvm -stack-alignment=16
4197 elif enabled clang; then
4198     check_cflags -mllvm -stack-alignment=16
4199     check_cflags -Qunused-arguments
4200     check_cflags -Werror=implicit-function-declaration
4201     check_cflags -Werror=missing-prototypes
4202     check_cflags -Werror=return-type
4203 elif enabled cparser; then
4204     add_cflags -Wno-missing-variable-declarations
4205     add_cflags -Wno-empty-statement
4206 elif enabled armcc; then
4207     # 2523: use of inline assembler is deprecated
4208     add_cflags -W${armcc_opt},--diag_suppress=2523
4209     add_cflags -W${armcc_opt},--diag_suppress=1207
4210     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4211     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4212     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4213     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4214 elif enabled tms470; then
4215     add_cflags -pds=824 -pds=837
4216     disable inline_asm
4217 elif enabled pathscale; then
4218     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4219 elif enabled_any msvc icl; then
4220     enabled x86_32 && disable aligned_stack
4221     enabled_all x86_32 debug && add_cflags -Oy-
4222     enabled debug && add_ldflags -debug
4223     enable pragma_deprecated
4224     if enabled icl; then
4225         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4226         # (correctly) on icl 13.x.
4227         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4228             add_cflags -Qansi-alias
4229         # icl will pass the inline asm tests but inline asm is currently
4230         # not supported (build will fail)
4231         disable inline_asm
4232     fi
4233 fi
4234
4235 case $as_type in
4236     clang)
4237         add_asflags -Qunused-arguments
4238     ;;
4239 esac
4240
4241 case $ld_type in
4242     clang)
4243         check_ldflags -Qunused-arguments
4244     ;;
4245 esac
4246
4247 case $target_os in
4248     osf1)
4249         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4250     ;;
4251     plan9)
4252         add_cppflags -Dmain=plan9_main
4253     ;;
4254 esac
4255
4256 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4257
4258 check_deps $CONFIG_LIST       \
4259            $CONFIG_EXTRA      \
4260            $HAVE_LIST         \
4261            $ALL_COMPONENTS    \
4262
4263 ! enabled_any memalign posix_memalign aligned_malloc &&
4264     enabled_any $need_memalign && enable memalign_hack
4265
4266 for thread in $THREADS_LIST; do
4267     if enabled $thread; then
4268         test -n "$thread_type" &&
4269             die "ERROR: Only one thread type must be selected." ||
4270             thread_type="$thread"
4271     fi
4272 done
4273
4274 echo "install prefix            $prefix"
4275 echo "source path               $source_path"
4276 echo "C compiler                $cc"
4277 echo "C library                 $libc_type"
4278 if test "$host_cc" != "$cc"; then
4279     echo "host C compiler           $host_cc"
4280     echo "host C library            $host_libc_type"
4281 fi
4282 echo "ARCH                      $arch ($cpu)"
4283 if test "$build_suffix" != ""; then
4284     echo "build suffix              $build_suffix"
4285 fi
4286 if test "$extra_version" != ""; then
4287     echo "version string suffix     $extra_version"
4288 fi
4289 echo "big-endian                ${bigendian-no}"
4290 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4291 if enabled x86; then
4292     echo "${yasmexe}                      ${yasm-no}"
4293     echo "MMX enabled               ${mmx-no}"
4294     echo "MMXEXT enabled            ${mmxext-no}"
4295     echo "3DNow! enabled            ${amd3dnow-no}"
4296     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4297     echo "SSE enabled               ${sse-no}"
4298     echo "SSSE3 enabled             ${ssse3-no}"
4299     echo "AVX enabled               ${avx-no}"
4300     echo "XOP enabled               ${xop-no}"
4301     echo "FMA3 enabled              ${fma3-no}"
4302     echo "FMA4 enabled              ${fma4-no}"
4303     echo "i686 features enabled     ${i686-no}"
4304     echo "CMOV is fast              ${fast_cmov-no}"
4305     echo "EBX available             ${ebx_available-no}"
4306     echo "EBP available             ${ebp_available-no}"
4307 fi
4308 if enabled aarch64; then
4309     echo "NEON enabled              ${neon-no}"
4310     echo "VFP enabled               ${vfp-no}"
4311 fi
4312 if enabled arm; then
4313     echo "ARMv5TE enabled           ${armv5te-no}"
4314     echo "ARMv6 enabled             ${armv6-no}"
4315     echo "ARMv6T2 enabled           ${armv6t2-no}"
4316     echo "VFP enabled               ${vfp-no}"
4317     echo "NEON enabled              ${neon-no}"
4318 fi
4319 if enabled ppc; then
4320     echo "AltiVec enabled           ${altivec-no}"
4321     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4322     echo "dcbzl available           ${dcbzl-no}"
4323 fi
4324 if enabled sparc; then
4325     echo "VIS enabled               ${vis-no}"
4326 fi
4327 echo "debug symbols             ${debug-no}"
4328 echo "optimize for size         ${small-no}"
4329 echo "optimizations             ${optimizations-no}"
4330 echo "static                    ${static-no}"
4331 echo "shared                    ${shared-no}"
4332 echo "new filter support        ${avfilter-no}"
4333 echo "network support           ${network-no}"
4334 echo "threading support         ${thread_type-no}"
4335 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4336 echo "SDL support               ${sdl-no}"
4337 test -n "$random_seed" &&
4338     echo "random seed               ${random_seed}"
4339 echo
4340
4341 echo "External libraries:"
4342 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4343 echo
4344
4345 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4346     echo "Enabled ${type}s:"
4347     eval list=\$$(toupper $type)_LIST
4348     print_enabled '_*' $list | print_3_columns
4349     echo
4350 done
4351
4352 license="LGPL version 2.1 or later"
4353 if enabled nonfree; then
4354     license="nonfree and unredistributable"
4355 elif enabled gplv3; then
4356     license="GPL version 3 or later"
4357 elif enabled lgplv3; then
4358     license="LGPL version 3 or later"
4359 elif enabled gpl; then
4360     license="GPL version 2 or later"
4361 fi
4362
4363 echo "License: $license"
4364
4365 echo "Creating config.mak and config.h..."
4366
4367 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4368
4369 config_files="$TMPH config.mak"
4370
4371 cat > config.mak <<EOF
4372 # Automatically generated by configure - do not modify!
4373 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4374 prefix=$prefix
4375 LIBDIR=\$(DESTDIR)$libdir
4376 SHLIBDIR=\$(DESTDIR)$shlibdir
4377 INCDIR=\$(DESTDIR)$incdir
4378 BINDIR=\$(DESTDIR)$bindir
4379 DATADIR=\$(DESTDIR)$datadir
4380 DOCDIR=\$(DESTDIR)$docdir
4381 MANDIR=\$(DESTDIR)$mandir
4382 SRC_PATH=$source_path
4383 CC_IDENT=$cc_ident
4384 ARCH=$arch
4385 CC=$cc
4386 AS=$as
4387 LD=$ld
4388 DEPCC=$dep_cc
4389 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4390 DEPAS=$as
4391 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4392 YASM=$yasmexe
4393 DEPYASM=$yasmexe
4394 AR=$ar
4395 ARFLAGS=$arflags
4396 AR_O=$ar_o
4397 RANLIB=$ranlib
4398 STRIP=$strip
4399 LN_S=$ln_s
4400 CPPFLAGS=$CPPFLAGS
4401 CFLAGS=$CFLAGS
4402 ASFLAGS=$ASFLAGS
4403 AS_C=$AS_C
4404 AS_O=$AS_O
4405 CC_C=$CC_C
4406 CC_E=$CC_E
4407 CC_O=$CC_O
4408 LD_O=$LD_O
4409 LD_LIB=$LD_LIB
4410 LD_PATH=$LD_PATH
4411 DLLTOOL=$dlltool
4412 LDFLAGS=$LDFLAGS
4413 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4414 STRIPFLAGS=$STRIPFLAGS
4415 YASMFLAGS=$YASMFLAGS
4416 BUILDSUF=$build_suffix
4417 FULLNAME=$FULLNAME
4418 LIBPREF=$LIBPREF
4419 LIBSUF=$LIBSUF
4420 LIBNAME=$LIBNAME
4421 SLIBPREF=$SLIBPREF
4422 SLIBSUF=$SLIBSUF
4423 EXESUF=$EXESUF
4424 EXTRA_VERSION=$extra_version
4425 CCDEP=$CCDEP
4426 CCDEP_FLAGS=$CCDEP_FLAGS
4427 ASDEP=$ASDEP
4428 ASDEP_FLAGS=$ASDEP_FLAGS
4429 CC_DEPFLAGS=$CC_DEPFLAGS
4430 AS_DEPFLAGS=$AS_DEPFLAGS
4431 HOSTCC=$host_cc
4432 HOSTLD=$host_ld
4433 HOSTCFLAGS=$host_cflags
4434 HOSTCPPFLAGS=$host_cppflags
4435 HOSTEXESUF=$HOSTEXESUF
4436 HOSTLDFLAGS=$host_ldflags
4437 HOSTLIBS=$host_libs
4438 DEPHOSTCC=$host_cc
4439 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4440 HOSTCCDEP=$HOSTCCDEP
4441 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4442 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4443 HOSTCC_C=$HOSTCC_C
4444 HOSTCC_O=$HOSTCC_O
4445 HOSTLD_O=$HOSTLD_O
4446 TARGET_EXEC=$target_exec $target_exec_args
4447 TARGET_PATH=$target_path
4448 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4449 CFLAGS-avplay=$sdl_cflags
4450 ZLIB=$($ldflags_filter -lz)
4451 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4452 EXTRALIBS=$extralibs
4453 COMPAT_OBJS=$compat_objs
4454 EXEOBJS=$exeobjs
4455 INSTALL=install
4456 LIBTARGET=${LIBTARGET}
4457 SLIBNAME=${SLIBNAME}
4458 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4459 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4460 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4461 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4462 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4463 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4464 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4465 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4466 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4467 EOF
4468
4469 get_version(){
4470     lcname=lib${1}
4471     name=$(toupper $lcname)
4472     file=$source_path/$lcname/version.h
4473     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4474     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4475     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4476     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4477     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4478 }
4479
4480 map 'get_version $v' $LIBRARY_LIST
4481
4482 print_program_libs(){
4483     eval "program_libs=\$${1}_libs"
4484     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4485 }
4486
4487 map 'print_program_libs $v' $PROGRAM_LIST
4488
4489 cat > $TMPH <<EOF
4490 /* Automatically generated by configure - do not modify! */
4491 #ifndef LIBAV_CONFIG_H
4492 #define LIBAV_CONFIG_H
4493 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4494 #define LIBAV_LICENSE "$(c_escape $license)"
4495 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4496 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4497 #define restrict $_restrict
4498 #define EXTERN_PREFIX "${extern_prefix}"
4499 #define EXTERN_ASM ${extern_prefix}
4500 #define SLIBSUF "$SLIBSUF"
4501 EOF
4502
4503 test -n "$malloc_prefix" &&
4504     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4505
4506 if enabled yasm; then
4507     append config_files $TMPASM
4508     printf '' >$TMPASM
4509 fi
4510
4511 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4512
4513 print_config ARCH_   "$config_files" $ARCH_LIST
4514 print_config HAVE_   "$config_files" $HAVE_LIST
4515 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4516                                      $CONFIG_EXTRA      \
4517                                      $ALL_COMPONENTS    \
4518
4519 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4520
4521 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4522 cp_if_changed $TMPH config.h
4523 touch .config
4524
4525 enabled yasm && cp_if_changed $TMPASM config.asm
4526
4527 cat > $TMPH <<EOF
4528 /* Generated by ffconf */
4529 #ifndef AVUTIL_AVCONFIG_H
4530 #define AVUTIL_AVCONFIG_H
4531 EOF
4532
4533 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4534
4535 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4536
4537 cp_if_changed $TMPH libavutil/avconfig.h
4538
4539 test -n "$WARNINGS" && printf "\n$WARNINGS"
4540
4541 # build pkg-config files
4542
4543 pkgconfig_generate(){
4544     name=$1
4545     shortname=${name#lib}${build_suffix}
4546     comment=$2
4547     version=$3
4548     libs=$4
4549     requires=$5
4550     enabled ${name#lib} || return 0
4551     mkdir -p $name
4552     cat <<EOF > $name/$name.pc
4553 prefix=$prefix
4554 exec_prefix=\${prefix}
4555 libdir=$libdir
4556 includedir=$incdir
4557
4558 Name: $name
4559 Description: $comment
4560 Version: $version
4561 Requires: $(enabled shared || echo $requires)
4562 Requires.private: $(enabled shared && echo $requires)
4563 Conflicts:
4564 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4565 Libs.private: $(enabled shared && echo $libs)
4566 Cflags: -I\${includedir}
4567 EOF
4568     cat <<EOF > $name/$name-uninstalled.pc
4569 prefix=
4570 exec_prefix=
4571 libdir=\${pcfiledir}
4572 includedir=${source_path}
4573
4574 Name: $name
4575 Description: $comment
4576 Version: $version
4577 Requires: $requires
4578 Conflicts:
4579 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4580 Cflags: -I\${includedir}
4581 EOF
4582 }
4583
4584 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4585 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4586 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4587 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4588
4589 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4590 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4591 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4592 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4593 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4594 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4595 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"