vf_frei0r: refactor library loading from env variable
[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     struct_addrinfo
1414     struct_group_source_req
1415     struct_ip_mreq_source
1416     struct_ipv6_mreq
1417     struct_pollfd
1418     struct_rusage_ru_maxrss
1419     struct_sockaddr_in6
1420     struct_sockaddr_sa_len
1421     struct_sockaddr_storage
1422     struct_v4l2_frmivalenum_discrete
1423     symver_asm_label
1424     symver_gnu_asm
1425     sync_val_compare_and_swap
1426     sysconf
1427     sysctl
1428     sys_mman_h
1429     sys_param_h
1430     sys_resource_h
1431     sys_select_h
1432     sys_soundcard_h
1433     sys_time_h
1434     sys_un_h
1435     sys_videoio_h
1436     threads
1437     unistd_h
1438     usleep
1439     vdpau_x11
1440     vfp_args
1441     VirtualAlloc
1442     windows_h
1443     winsock2_h
1444     xform_asm
1445     xlib
1446     xmm_clobbers
1447 "
1448
1449 # options emitted with CONFIG_ prefix but not available on the command line
1450 CONFIG_EXTRA="
1451     aandcttables
1452     ac3dsp
1453     audio_frame_queue
1454     dsputil
1455     gcrypt
1456     golomb
1457     gplv3
1458     h263dsp
1459     h264chroma
1460     h264dsp
1461     h264pred
1462     h264qpel
1463     hpeldsp
1464     huffman
1465     intrax8
1466     lgplv3
1467     lpc
1468     mpegaudio
1469     mpegaudiodsp
1470     mpegvideo
1471     mpegvideoenc
1472     nettle
1473     rangecoder
1474     riffdec
1475     riffenc
1476     rtpdec
1477     rtpenc_chain
1478     sinewin
1479     videodsp
1480     vp3dsp
1481 "
1482
1483 CMDLINE_SELECT="
1484     $ARCH_EXT_LIST
1485     $CONFIG_LIST
1486     $HAVE_LIST_CMDLINE
1487     $THREADS_LIST
1488     asm
1489     cross_compile
1490     debug
1491     extra_warnings
1492     logging
1493     lto
1494     optimizations
1495 "
1496
1497 PATHS_LIST='
1498     bindir
1499     datadir
1500     docdir
1501     incdir
1502     libdir
1503     mandir
1504     prefix
1505     shlibdir
1506 '
1507
1508 CMDLINE_SET="
1509     $PATHS_LIST
1510     ar
1511     arch
1512     as
1513     build_suffix
1514     cc
1515     cpu
1516     cross_prefix
1517     dep_cc
1518     extra_version
1519     host_cc
1520     host_cflags
1521     host_ld
1522     host_ldflags
1523     host_libs
1524     host_os
1525     ld
1526     logfile
1527     malloc_prefix
1528     nm
1529     optflags
1530     pkg_config
1531     random_seed
1532     samples
1533     sysinclude
1534     sysroot
1535     target_exec
1536     target_os
1537     target_path
1538     target_samples
1539     toolchain
1540 "
1541
1542 CMDLINE_APPEND="
1543     extra_cflags
1544     host_cppflags
1545 "
1546
1547 # code dependency declarations
1548
1549 # architecture extensions
1550
1551 armv5te_deps="arm"
1552 armv6_deps="arm"
1553 armv6t2_deps="arm"
1554 neon_deps_any="aarch64 arm"
1555 vfp_deps_any="aarch64 arm"
1556 vfpv3_deps="vfp"
1557
1558 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1559
1560 altivec_deps="ppc"
1561 ppc4xx_deps="ppc"
1562
1563 vis_deps="sparc"
1564
1565 cpunop_deps="i686"
1566 x86_64_select="i686"
1567 x86_64_suggest="fast_cmov"
1568
1569 amd3dnow_deps="mmx"
1570 amd3dnowext_deps="amd3dnow"
1571 i686_deps="x86"
1572 mmx_deps="x86"
1573 mmxext_deps="mmx"
1574 sse_deps="mmxext"
1575 sse2_deps="sse"
1576 sse3_deps="sse2"
1577 ssse3_deps="sse3"
1578 sse4_deps="ssse3"
1579 sse42_deps="sse4"
1580 avx_deps="sse42"
1581 xop_deps="avx"
1582 fma3_deps="avx"
1583 fma4_deps="avx"
1584 avx2_deps="avx"
1585
1586 mmx_external_deps="yasm"
1587 mmx_inline_deps="inline_asm"
1588 mmx_suggest="mmx_external mmx_inline"
1589
1590 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1591     eval dep=\$${ext}_deps
1592     eval ${ext}_external_deps='"${dep}_external"'
1593     eval ${ext}_inline_deps='"${dep}_inline"'
1594     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1595 done
1596
1597 aligned_stack_if_any="aarch64 ppc x86"
1598 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1599 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1600 fast_unaligned_if_any="aarch64 ppc x86"
1601
1602 need_memalign="altivec neon sse"
1603
1604 # system capabilities
1605 log2_deps="!libc_msvcrt"
1606
1607 symver_if_any="symver_asm_label symver_gnu_asm"
1608
1609 # threading support
1610 atomics_gcc_if="sync_val_compare_and_swap"
1611 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1612 atomics_win32_if="MemoryBarrier"
1613 atomics_native_if_any="$ATOMICS_LIST"
1614 w32threads_deps="atomics_native"
1615 threads_if_any="$THREADS_LIST"
1616
1617 # subsystems
1618 dct_select="rdft"
1619 error_resilience_select="dsputil"
1620 lpc_select="dsputil"
1621 mdct_select="fft"
1622 rdft_select="fft"
1623 mpegaudio_select="mpegaudiodsp"
1624 mpegaudiodsp_select="dct"
1625 mpegvideo_select="dsputil hpeldsp videodsp"
1626 mpegvideoenc_select="mpegvideo"
1627
1628 # decoders / encoders
1629 aac_decoder_select="mdct sinewin"
1630 aac_encoder_select="audio_frame_queue mdct sinewin"
1631 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1632 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1633 ac3_encoder_select="mdct ac3dsp dsputil"
1634 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1635 aic_decoder_select="dsputil golomb"
1636 alac_encoder_select="lpc"
1637 als_decoder_select="dsputil"
1638 amrnb_decoder_select="lsp"
1639 amrwb_decoder_select="lsp"
1640 amv_decoder_select="sp5x_decoder"
1641 ape_decoder_select="dsputil"
1642 asv1_decoder_select="dsputil"
1643 asv1_encoder_select="dsputil"
1644 asv2_decoder_select="dsputil"
1645 asv2_encoder_select="dsputil"
1646 atrac1_decoder_select="mdct sinewin"
1647 atrac3_decoder_select="mdct"
1648 atrac3p_decoder_select="mdct sinewin"
1649 bink_decoder_select="dsputil hpeldsp"
1650 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1651 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1652 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1653 cllc_decoder_select="dsputil"
1654 comfortnoise_encoder_select="lpc"
1655 cook_decoder_select="dsputil mdct sinewin"
1656 cscd_decoder_select="lzo"
1657 cscd_decoder_suggest="zlib"
1658 dca_decoder_select="mdct"
1659 dnxhd_decoder_select="dsputil"
1660 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1661 dvvideo_decoder_select="dsputil"
1662 dvvideo_encoder_select="dsputil"
1663 dxa_decoder_deps="zlib"
1664 eac3_decoder_select="ac3_decoder"
1665 eac3_encoder_select="ac3_encoder"
1666 eamad_decoder_select="aandcttables dsputil mpegvideo"
1667 eatgq_decoder_select="aandcttables dsputil"
1668 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1669 ffv1_decoder_select="dsputil golomb rangecoder"
1670 ffv1_encoder_select="dsputil rangecoder"
1671 ffvhuff_decoder_select="huffyuv_decoder"
1672 ffvhuff_encoder_select="huffyuv_encoder"
1673 fic_decoder_select="dsputil golomb"
1674 flac_decoder_select="golomb"
1675 flac_encoder_select="dsputil golomb lpc"
1676 flashsv_decoder_deps="zlib"
1677 flashsv_encoder_deps="zlib"
1678 flashsv2_decoder_deps="zlib"
1679 flv_decoder_select="h263_decoder"
1680 flv_encoder_select="h263_encoder"
1681 fourxm_decoder_select="dsputil"
1682 fraps_decoder_select="dsputil huffman"
1683 g2m_decoder_deps="zlib"
1684 g2m_decoder_select="dsputil"
1685 h261_decoder_select="error_resilience mpegvideo"
1686 h261_encoder_select="aandcttables mpegvideoenc"
1687 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1688 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1689 h263i_decoder_select="h263_decoder"
1690 h263p_encoder_select="h263_encoder"
1691 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1692 h264_decoder_suggest="error_resilience"
1693 hevc_decoder_select="dsputil golomb videodsp"
1694 huffyuv_decoder_select="dsputil"
1695 huffyuv_encoder_select="dsputil huffman"
1696 iac_decoder_select="imc_decoder"
1697 imc_decoder_select="dsputil fft mdct sinewin"
1698 indeo3_decoder_select="hpeldsp"
1699 interplay_video_decoder_select="hpeldsp"
1700 jpegls_decoder_select="golomb mjpeg_decoder"
1701 jpegls_encoder_select="golomb"
1702 jv_decoder_select="dsputil"
1703 lagarith_decoder_select="dsputil"
1704 ljpeg_encoder_select="aandcttables mpegvideoenc"
1705 loco_decoder_select="golomb"
1706 mdec_decoder_select="dsputil error_resilience mpegvideo"
1707 metasound_decoder_select="lsp mdct sinewin"
1708 mimic_decoder_select="dsputil hpeldsp"
1709 mjpeg_decoder_select="dsputil hpeldsp"
1710 mjpegb_decoder_select="mjpeg_decoder"
1711 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1712 mlp_decoder_select="dsputil mlp_parser"
1713 motionpixels_decoder_select="dsputil"
1714 mp1_decoder_select="mpegaudio"
1715 mp1float_decoder_select="mpegaudio"
1716 mp2_decoder_select="mpegaudio"
1717 mp2float_decoder_select="mpegaudio"
1718 mp3_decoder_select="mpegaudio"
1719 mp3adu_decoder_select="mpegaudio"
1720 mp3adufloat_decoder_select="mpegaudio"
1721 mp3float_decoder_select="mpegaudio"
1722 mp3on4_decoder_select="mpegaudio"
1723 mp3on4float_decoder_select="mpegaudio"
1724 mpc7_decoder_select="dsputil mpegaudiodsp"
1725 mpc8_decoder_select="dsputil mpegaudiodsp"
1726 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1727 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1728 mpeg1video_decoder_select="error_resilience mpegvideo"
1729 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1730 mpeg2video_decoder_select="error_resilience mpegvideo"
1731 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1732 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1733 mpeg4_encoder_select="h263_encoder"
1734 msmpeg4v1_decoder_select="h263_decoder"
1735 msmpeg4v2_decoder_select="h263_decoder"
1736 msmpeg4v2_encoder_select="h263_encoder"
1737 msmpeg4v3_decoder_select="h263_decoder"
1738 msmpeg4v3_encoder_select="h263_encoder"
1739 mss2_decoder_select="error_resilience vc1_decoder"
1740 mxpeg_decoder_select="mjpeg_decoder"
1741 nellymoser_decoder_select="mdct sinewin"
1742 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1743 nuv_decoder_select="dsputil lzo"
1744 png_decoder_deps="zlib"
1745 png_decoder_select="dsputil"
1746 png_encoder_deps="zlib"
1747 png_encoder_select="dsputil"
1748 prores_decoder_select="dsputil"
1749 prores_encoder_select="dsputil"
1750 qcelp_decoder_select="lsp"
1751 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1752 ra_144_encoder_select="audio_frame_queue lpc"
1753 ralf_decoder_select="golomb"
1754 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1755 rv10_encoder_select="h263_encoder"
1756 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1757 rv20_encoder_select="h263_encoder"
1758 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1759 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1760 shorten_decoder_select="golomb"
1761 sipr_decoder_select="lsp"
1762 sp5x_decoder_select="mjpeg_decoder"
1763 svq1_decoder_select="hpeldsp"
1764 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1765 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1766 svq3_decoder_suggest="error_resilience zlib"
1767 tak_decoder_select="dsputil"
1768 theora_decoder_select="vp3_decoder"
1769 tiff_decoder_suggest="zlib"
1770 tiff_encoder_suggest="zlib"
1771 thp_decoder_select="mjpeg_decoder"
1772 truehd_decoder_select="mlp_decoder"
1773 truemotion2_decoder_select="dsputil"
1774 truespeech_decoder_select="dsputil"
1775 tscc_decoder_deps="zlib"
1776 twinvq_decoder_select="mdct lsp sinewin"
1777 utvideo_decoder_select="dsputil"
1778 utvideo_encoder_select="dsputil huffman"
1779 vble_decoder_select="dsputil"
1780 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1781 vc1image_decoder_select="vc1_decoder"
1782 vorbis_decoder_select="mdct"
1783 vorbis_encoder_select="mdct"
1784 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1785 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1786 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1787 vp6a_decoder_select="vp6_decoder"
1788 vp6f_decoder_select="vp6_decoder"
1789 vp8_decoder_select="h264pred videodsp"
1790 vp9_decoder_select="videodsp"
1791 webp_decoder_select="vp8_decoder"
1792 wmapro_decoder_select="mdct sinewin"
1793 wmav1_decoder_select="mdct sinewin"
1794 wmav1_encoder_select="mdct sinewin"
1795 wmav2_decoder_select="mdct sinewin"
1796 wmav2_encoder_select="mdct sinewin"
1797 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1798 wmv1_decoder_select="h263_decoder"
1799 wmv1_encoder_select="h263_encoder"
1800 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1801 wmv2_encoder_select="h263_encoder"
1802 wmv3_decoder_select="vc1_decoder"
1803 wmv3image_decoder_select="wmv3_decoder"
1804 zerocodec_decoder_deps="zlib"
1805 zlib_decoder_deps="zlib"
1806 zlib_encoder_deps="zlib"
1807 zmbv_decoder_deps="zlib"
1808 zmbv_encoder_deps="zlib"
1809
1810 # hardware accelerators
1811 dxva2_deps="dxva2api_h"
1812 vaapi_deps="va_va_h"
1813 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1814 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1815 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1816
1817 h263_vaapi_hwaccel_deps="vaapi"
1818 h263_vaapi_hwaccel_select="h263_decoder"
1819 h263_vdpau_hwaccel_deps="vdpau"
1820 h263_vdpau_hwaccel_select="h263_decoder"
1821 h264_dxva2_hwaccel_deps="dxva2"
1822 h264_dxva2_hwaccel_select="h264_decoder"
1823 h264_vaapi_hwaccel_deps="vaapi"
1824 h264_vaapi_hwaccel_select="h264_decoder"
1825 h264_vda_hwaccel_deps="vda"
1826 h264_vda_hwaccel_select="h264_decoder"
1827 h264_vdpau_hwaccel_deps="vdpau"
1828 h264_vdpau_hwaccel_select="h264_decoder"
1829 mpeg1_vdpau_hwaccel_deps="vdpau"
1830 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1831 mpeg2_dxva2_hwaccel_deps="dxva2"
1832 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1833 mpeg2_vaapi_hwaccel_deps="vaapi"
1834 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1835 mpeg2_vdpau_hwaccel_deps="vdpau"
1836 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1837 mpeg4_vaapi_hwaccel_deps="vaapi"
1838 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1839 mpeg4_vdpau_hwaccel_deps="vdpau"
1840 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1841 vc1_dxva2_hwaccel_deps="dxva2"
1842 vc1_dxva2_hwaccel_select="vc1_decoder"
1843 vc1_vaapi_hwaccel_deps="vaapi"
1844 vc1_vaapi_hwaccel_select="vc1_decoder"
1845 vc1_vdpau_hwaccel_deps="vdpau"
1846 vc1_vdpau_hwaccel_select="vc1_decoder"
1847 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1848 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1849 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1850
1851 # parsers
1852 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1853 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1854 mpegvideo_parser_select="error_resilience mpegvideo"
1855 vc1_parser_select="mpegvideo"
1856
1857 # external libraries
1858 libfaac_encoder_deps="libfaac"
1859 libfaac_encoder_select="audio_frame_queue"
1860 libfdk_aac_decoder_deps="libfdk_aac"
1861 libfdk_aac_encoder_deps="libfdk_aac"
1862 libfdk_aac_encoder_select="audio_frame_queue"
1863 libgsm_decoder_deps="libgsm"
1864 libgsm_encoder_deps="libgsm"
1865 libgsm_ms_decoder_deps="libgsm"
1866 libgsm_ms_encoder_deps="libgsm"
1867 libilbc_decoder_deps="libilbc"
1868 libilbc_encoder_deps="libilbc"
1869 libmp3lame_encoder_deps="libmp3lame"
1870 libmp3lame_encoder_select="audio_frame_queue"
1871 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1872 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1873 libopencore_amrnb_encoder_select="audio_frame_queue"
1874 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1875 libopenjpeg_decoder_deps="libopenjpeg"
1876 libopenjpeg_encoder_deps="libopenjpeg"
1877 libopus_decoder_deps="libopus"
1878 libopus_encoder_deps="libopus"
1879 libopus_encoder_select="audio_frame_queue"
1880 libschroedinger_decoder_deps="libschroedinger"
1881 libschroedinger_encoder_deps="libschroedinger"
1882 libspeex_decoder_deps="libspeex"
1883 libspeex_encoder_deps="libspeex"
1884 libspeex_encoder_select="audio_frame_queue"
1885 libtheora_encoder_deps="libtheora"
1886 libvo_aacenc_encoder_deps="libvo_aacenc"
1887 libvo_aacenc_encoder_select="audio_frame_queue"
1888 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1889 libvorbis_encoder_deps="libvorbis"
1890 libvorbis_encoder_select="audio_frame_queue"
1891 libvpx_vp8_decoder_deps="libvpx"
1892 libvpx_vp8_encoder_deps="libvpx"
1893 libvpx_vp9_decoder_deps="libvpx"
1894 libvpx_vp9_encoder_deps="libvpx"
1895 libwavpack_encoder_deps="libwavpack"
1896 libwebp_encoder_deps="libwebp"
1897 libx264_encoder_deps="libx264"
1898 libx265_encoder_deps="libx265"
1899 libxavs_encoder_deps="libxavs"
1900 libxvid_encoder_deps="libxvid"
1901
1902 # demuxers / muxers
1903 ac3_demuxer_select="ac3_parser"
1904 asf_demuxer_select="riffdec"
1905 asf_muxer_select="riffenc"
1906 asf_stream_muxer_select="asf_muxer"
1907 avi_demuxer_select="riffdec"
1908 avi_muxer_select="riffenc"
1909 avisynth_demuxer_deps="avisynth"
1910 avisynth_demuxer_select="riffdec"
1911 caf_demuxer_select="riffdec"
1912 dirac_demuxer_select="dirac_parser"
1913 dxa_demuxer_select="riffdec"
1914 eac3_demuxer_select="ac3_parser"
1915 f4v_muxer_select="mov_muxer"
1916 flac_demuxer_select="flac_parser"
1917 hds_muxer_select="flv_muxer"
1918 hls_muxer_select="mpegts_muxer"
1919 ipod_muxer_select="mov_muxer"
1920 ismv_muxer_select="mov_muxer"
1921 matroska_audio_muxer_select="matroska_muxer"
1922 matroska_demuxer_select="riffdec"
1923 matroska_demuxer_suggest="bzlib lzo zlib"
1924 matroska_muxer_select="riffenc"
1925 mmf_muxer_select="riffenc"
1926 mov_demuxer_select="riffdec"
1927 mov_demuxer_suggest="zlib"
1928 mov_muxer_select="riffenc rtpenc_chain"
1929 mp3_demuxer_select="mpegaudio_parser"
1930 mp4_muxer_select="mov_muxer"
1931 mpegts_muxer_select="adts_muxer latm_muxer"
1932 mpegtsraw_demuxer_select="mpegts_demuxer"
1933 mxf_d10_muxer_select="mxf_muxer"
1934 nut_muxer_select="riffenc"
1935 nuv_demuxer_select="riffdec"
1936 ogg_demuxer_select="golomb"
1937 psp_muxer_select="mov_muxer"
1938 rtp_demuxer_select="sdp_demuxer"
1939 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1940 rtsp_demuxer_select="http_protocol rtpdec"
1941 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1942 sap_demuxer_select="sdp_demuxer"
1943 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1944 sdp_demuxer_select="rtpdec"
1945 smoothstreaming_muxer_select="ismv_muxer"
1946 spdif_muxer_select="aac_parser"
1947 tak_demuxer_select="tak_parser"
1948 tg2_muxer_select="mov_muxer"
1949 tgp_muxer_select="mov_muxer"
1950 w64_demuxer_select="wav_demuxer"
1951 wav_demuxer_select="riffdec"
1952 wav_muxer_select="riffenc"
1953 webm_muxer_select="riffenc"
1954 wtv_demuxer_select="riffdec"
1955 xmv_demuxer_select="riffdec"
1956 xwma_demuxer_select="riffdec"
1957
1958 # indevs / outdevs
1959 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1960 alsa_outdev_deps="alsa_asoundlib_h"
1961 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1962 dv1394_indev_deps="dv1394"
1963 dv1394_indev_select="dv_demuxer"
1964 fbdev_indev_deps="linux_fb_h"
1965 jack_indev_deps="jack_jack_h pthreads"
1966 libcdio_indev_deps="libcdio"
1967 libdc1394_indev_deps="libdc1394"
1968 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1969 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1970 pulse_indev_deps="libpulse"
1971 sndio_indev_deps="sndio_h"
1972 sndio_outdev_deps="sndio_h"
1973 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1974 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1975 vfwcap_indev_extralibs="-lavicap32"
1976 x11grab_indev_deps="x11grab XShmCreateImage"
1977
1978 # protocols
1979 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1980 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1981 ffrtmpcrypt_protocol_select="tcp_protocol"
1982 ffrtmphttp_protocol_deps="!librtmp_protocol"
1983 ffrtmphttp_protocol_select="http_protocol"
1984 gopher_protocol_select="network"
1985 httpproxy_protocol_select="tcp_protocol"
1986 http_protocol_select="tcp_protocol"
1987 https_protocol_select="tls_protocol"
1988 librtmp_protocol_deps="librtmp"
1989 librtmpe_protocol_deps="librtmp"
1990 librtmps_protocol_deps="librtmp"
1991 librtmpt_protocol_deps="librtmp"
1992 librtmpte_protocol_deps="librtmp"
1993 mmsh_protocol_select="http_protocol"
1994 mmst_protocol_select="network"
1995 rtmp_protocol_deps="!librtmp_protocol"
1996 rtmp_protocol_select="tcp_protocol"
1997 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1998 rtmps_protocol_deps="!librtmp_protocol"
1999 rtmps_protocol_select="tls_protocol"
2000 rtmpt_protocol_select="ffrtmphttp_protocol"
2001 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2002 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2003 rtp_protocol_select="udp_protocol"
2004 sctp_protocol_deps="struct_sctp_event_subscribe"
2005 sctp_protocol_select="network"
2006 srtp_protocol_select="rtp_protocol"
2007 tcp_protocol_select="network"
2008 tls_protocol_deps_any="openssl gnutls"
2009 tls_protocol_select="tcp_protocol"
2010 udp_protocol_select="network"
2011 unix_protocol_deps="sys_un_h"
2012 unix_protocol_select="network"
2013
2014 # filters
2015 blackframe_filter_deps="gpl"
2016 boxblur_filter_deps="gpl"
2017 cropdetect_filter_deps="gpl"
2018 delogo_filter_deps="gpl"
2019 drawtext_filter_deps="libfreetype"
2020 frei0r_filter_deps="frei0r dlopen"
2021 frei0r_filter_extralibs='$ldl'
2022 frei0r_src_filter_deps="frei0r dlopen"
2023 frei0r_src_filter_extralibs='$ldl'
2024 hqdn3d_filter_deps="gpl"
2025 interlace_filter_deps="gpl"
2026 resample_filter_deps="avresample"
2027 ocv_filter_deps="libopencv"
2028 scale_filter_deps="swscale"
2029
2030 # examples
2031 avcodec_example_deps="avcodec avutil"
2032 filter_audio_example_deps="avfilter avutil"
2033 metadata_example_deps="avformat avutil"
2034 output_example_deps="avcodec avformat avutil swscale"
2035 transcode_aac_example_deps="avcodec avformat avresample"
2036
2037 # libraries
2038 avcodec_deps="avutil"
2039 avdevice_deps="avutil avcodec avformat"
2040 avfilter_deps="avutil"
2041 avformat_deps="avutil avcodec"
2042 avresample_deps="avutil"
2043 swscale_deps="avutil"
2044
2045 # programs
2046 avconv_deps="avcodec avfilter avformat avresample swscale"
2047 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2048                fps_filter null_filter resample_filter scale_filter
2049                setpts_filter trim_filter"
2050 avplay_deps="avcodec avformat avresample swscale sdl"
2051 avplay_libs='$sdl_libs'
2052 avplay_select="rdft"
2053 avprobe_deps="avcodec avformat"
2054 avserver_deps="avformat fork !shared"
2055 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2056
2057 # documentation
2058 pod2man_deps="doc"
2059 texi2html_deps="doc"
2060
2061 # default parameters
2062
2063 logfile="config.log"
2064
2065 # installation paths
2066 prefix_default="/usr/local"
2067 bindir_default='${prefix}/bin'
2068 datadir_default='${prefix}/share/avconv'
2069 docdir_default='${prefix}/share/doc/libav'
2070 incdir_default='${prefix}/include'
2071 libdir_default='${prefix}/lib'
2072 mandir_default='${prefix}/share/man'
2073 shlibdir_default="$libdir_default"
2074
2075 # toolchain
2076 ar_default="ar"
2077 cc_default="gcc"
2078 host_cc_default="gcc"
2079 cp_f="cp -f"
2080 ln_s="ln -s -f"
2081 nm_default="nm -g"
2082 objformat="elf"
2083 pkg_config_default=pkg-config
2084 ranlib="ranlib"
2085 strip="strip"
2086 yasmexe="yasm"
2087
2088 nogas=":"
2089
2090 # machine
2091 arch_default=$(uname -m)
2092 cpu="generic"
2093
2094 # OS
2095 target_os_default=$(tolower $(uname -s))
2096 host_os=$target_os_default
2097
2098 # configurable options
2099 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2100
2101 enable asm
2102 enable debug
2103 enable doc
2104 enable optimizations
2105 enable safe_bitstream_reader
2106 enable static
2107 enable swscale_alpha
2108
2109 # By default, enable only those hwaccels that have no external dependencies.
2110 enable dxva2 vdpau
2111
2112 # build settings
2113 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2114 LIBPREF="lib"
2115 LIBSUF=".a"
2116 FULLNAME='$(NAME)$(BUILDSUF)'
2117 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2118 SLIBPREF="lib"
2119 SLIBSUF=".so"
2120 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2121 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2122 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2123 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2124 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2125 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2126
2127 asflags_filter=echo
2128 cflags_filter=echo
2129 ldflags_filter=echo
2130
2131 AS_C='-c'
2132 AS_O='-o $@'
2133 CC_C='-c'
2134 CC_E='-E -o $@'
2135 CC_O='-o $@'
2136 LD_O='-o $@'
2137 LD_LIB='-l%'
2138 LD_PATH='-L'
2139 HOSTCC_C='-c'
2140 HOSTCC_E='-E -o $@'
2141 HOSTCC_O='-o $@'
2142 HOSTLD_O='-o $@'
2143
2144 host_libs='-lm'
2145 host_cflags_filter=echo
2146 host_ldflags_filter=echo
2147
2148 target_path='$(CURDIR)'
2149
2150 # since the object filename is not given with the -MM flag, the compiler
2151 # is only able to print the basename, and we must add the path ourselves
2152 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2153 DEPFLAGS='-MM'
2154
2155 # find source path
2156 if test -f configure; then
2157     source_path=.
2158 else
2159     source_path=$(cd $(dirname "$0"); pwd)
2160     echo "$source_path" | grep -q '[[:blank:]]' &&
2161         die "Out of tree builds are impossible with whitespace in source path."
2162     test -e "$source_path/config.h" &&
2163         die "Out of tree builds are impossible with config.h in source dir."
2164 fi
2165
2166 for v in "$@"; do
2167     r=${v#*=}
2168     l=${v%"$r"}
2169     r=$(sh_quote "$r")
2170     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2171 done
2172
2173 find_things(){
2174     thing=$1
2175     pattern=$2
2176     file=$source_path/$3
2177     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2178 }
2179
2180 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2181 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2182 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2183 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2184 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2185 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2186 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2187 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2188 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2189 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2190 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2191
2192 ALL_COMPONENTS="
2193     $BSF_LIST
2194     $DECODER_LIST
2195     $DEMUXER_LIST
2196     $ENCODER_LIST
2197     $FILTER_LIST
2198     $HWACCEL_LIST
2199     $INDEV_LIST
2200     $MUXER_LIST
2201     $OUTDEV_LIST
2202     $PARSER_LIST
2203     $PROTOCOL_LIST
2204 "
2205
2206 for n in $COMPONENT_LIST; do
2207     v=$(toupper ${n%s})_LIST
2208     eval enable \$$v
2209     eval ${n}_if_any="\$$v"
2210 done
2211
2212 enable $ARCH_EXT_LIST
2213
2214 die_unknown(){
2215     echo "Unknown option \"$1\"."
2216     echo "See $0 --help for available options."
2217     exit 1
2218 }
2219
2220 print_3_columns() {
2221     cat | tr ' ' '\n' | sort | pr -r -3 -t
2222 }
2223
2224 show_list() {
2225     suffix=_$1
2226     shift
2227     echo $* | sed s/$suffix//g | print_3_columns
2228     exit 0
2229 }
2230
2231 rand_list(){
2232     IFS=', '
2233     set -- $*
2234     unset IFS
2235     for thing; do
2236         comp=${thing%:*}
2237         prob=${thing#$comp}
2238         prob=${prob#:}
2239         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2240         echo "prob ${prob:-0.5}"
2241         printf '%s\n' $comp
2242     done
2243 }
2244
2245 do_random(){
2246     action=$1
2247     shift
2248     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2249     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2250 }
2251
2252 for opt do
2253     optval="${opt#*=}"
2254     case "$opt" in
2255         --extra-ldflags=*)
2256             add_ldflags $optval
2257         ;;
2258         --extra-libs=*)
2259             add_extralibs $optval
2260         ;;
2261         --disable-devices)
2262             disable $INDEV_LIST $OUTDEV_LIST
2263         ;;
2264         --enable-debug=*)
2265             debuglevel="$optval"
2266         ;;
2267         --disable-programs)
2268             disable $PROGRAM_LIST
2269         ;;
2270         --disable-everything)
2271             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2272         ;;
2273         --disable-all)
2274             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2275             disable $LIBRARY_LIST $PROGRAM_LIST doc
2276         ;;
2277         --enable-random|--disable-random)
2278             action=${opt%%-random}
2279             do_random ${action#--} $COMPONENT_LIST
2280         ;;
2281         --enable-random=*|--disable-random=*)
2282             action=${opt%%-random=*}
2283             do_random ${action#--} $optval
2284         ;;
2285         --enable-*=*|--disable-*=*)
2286             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2287             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2288             eval list=\$$(toupper $thing)_LIST
2289             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2290             $action $(filter "$name" $list)
2291         ;;
2292         --enable-?*|--disable-?*)
2293             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2294             if is_in $option $COMPONENT_LIST; then
2295                 test $action = disable && action=unset
2296                 eval $action \$$(toupper ${option%s})_LIST
2297             elif is_in $option $CMDLINE_SELECT; then
2298                 $action $option
2299             else
2300                 die_unknown $opt
2301             fi
2302         ;;
2303         --list-*)
2304             NAME="${opt#--list-}"
2305             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2306             NAME=${NAME%s}
2307             eval show_list $NAME \$$(toupper $NAME)_LIST
2308         ;;
2309         --help|-h) show_help
2310         ;;
2311         *)
2312             optname="${opt%%=*}"
2313             optname="${optname#--}"
2314             optname=$(echo "$optname" | sed 's/-/_/g')
2315             if is_in $optname $CMDLINE_SET; then
2316                 eval $optname='$optval'
2317             elif is_in $optname $CMDLINE_APPEND; then
2318                 append $optname "$optval"
2319             else
2320                 die_unknown $opt
2321             fi
2322         ;;
2323     esac
2324 done
2325
2326 disabled logging && logfile=/dev/null
2327
2328 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2329 set >> $logfile
2330
2331 test -n "$cross_prefix" && enable cross_compile
2332
2333 if enabled cross_compile; then
2334     test -n "$arch" && test -n "$target_os" ||
2335         die "Must specify target arch and OS when cross-compiling"
2336 fi
2337
2338 ar_default="${cross_prefix}${ar_default}"
2339 cc_default="${cross_prefix}${cc_default}"
2340 nm_default="${cross_prefix}${nm_default}"
2341 pkg_config_default="${cross_prefix}${pkg_config_default}"
2342 ranlib="${cross_prefix}${ranlib}"
2343 strip="${cross_prefix}${strip}"
2344
2345 sysinclude_default="${sysroot}/usr/include"
2346
2347 case "$toolchain" in
2348     clang-asan)
2349         cc_default="clang"
2350         add_cflags  -fsanitize=address
2351         add_ldflags -fsanitize=address
2352     ;;
2353     clang-tsan)
2354         cc_default="clang"
2355         add_cflags  -fsanitize=thread -pie
2356         add_ldflags -fsanitize=thread -pie
2357     ;;
2358     clang-usan)
2359         cc_default="clang"
2360         add_cflags  -fsanitize=undefined
2361         add_ldflags -fsanitize=undefined
2362     ;;
2363     gcc-asan)
2364         cc_default="gcc"
2365         add_cflags  -fsanitize=address
2366         add_ldflags -fsanitize=address
2367     ;;
2368     gcc-tsan)
2369         cc_default="gcc"
2370         add_cflags  -fsanitize=thread -pie -fPIC
2371         add_ldflags -fsanitize=thread -pie -fPIC
2372     ;;
2373     gcc-usan)
2374         cc_default="gcc"
2375         add_cflags  -fsanitize=undefined
2376         add_ldflags -fsanitize=undefined
2377     ;;
2378     valgrind-massif)
2379         target_exec_default="valgrind"
2380         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2381     ;;
2382     valgrind-memcheck)
2383         target_exec_default="valgrind"
2384         target_exec_args="--track-origins=yes --leak-check=full"
2385     ;;
2386     msvc)
2387         # Check whether the current MSVC version needs the C99 converter.
2388         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2389         # support enough of C99 to build libav. Default to the new
2390         # behaviour if the regexp was unable to match anything, since this
2391         # successfully parses the version number of existing supported
2392         # versions that require the converter (MSVC 2010 and 2012).
2393         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2394         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2395             cc_default="cl"
2396         else
2397             cc_default="c99wrap cl"
2398         fi
2399         ld_default="link"
2400         nm_default="dumpbin -symbols"
2401         ar_default="lib"
2402         target_os_default="win32"
2403         # Use a relative path for TMPDIR. This makes sure all the
2404         # ffconf temp files are written with a relative path, avoiding
2405         # issues with msys/win32 path conversion for MSVC parameters
2406         # such as -Fo<file> or -out:<file>.
2407         TMPDIR=.
2408     ;;
2409     icl)
2410         cc_default="icl"
2411         ld_default="xilink"
2412         nm_default="dumpbin -symbols"
2413         ar_default="xilib"
2414         target_os_default="win32"
2415         TMPDIR=.
2416     ;;
2417     gcov)
2418         add_cflags  -fprofile-arcs -ftest-coverage
2419         add_ldflags -fprofile-arcs -ftest-coverage
2420     ;;
2421     hardened)
2422         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2423         add_ldflags -Wl,-z,relro -Wl,-z,now
2424     ;;
2425     ?*)
2426         die "Unknown toolchain $toolchain"
2427     ;;
2428 esac
2429
2430 set_default arch cc pkg_config sysinclude target_exec target_os
2431 enabled cross_compile || host_cc_default=$cc
2432 set_default host_cc
2433
2434 if ! $pkg_config --version >/dev/null 2>&1; then
2435     warn "$pkg_config not found, library detection may fail."
2436     pkg_config=false
2437 fi
2438
2439 exesuf() {
2440     case $1 in
2441         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2442     esac
2443 }
2444
2445 EXESUF=$(exesuf $target_os)
2446 HOSTEXESUF=$(exesuf $host_os)
2447
2448 # set temporary file name
2449 : ${TMPDIR:=$TEMPDIR}
2450 : ${TMPDIR:=$TMP}
2451 : ${TMPDIR:=/tmp}
2452
2453 if ! check_cmd mktemp -u XXXXXX; then
2454     # simple replacement for missing mktemp
2455     # NOT SAFE FOR GENERAL USE
2456     mktemp(){
2457         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2458     }
2459 fi
2460
2461 tmpfile(){
2462     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2463         (set -C; exec > $tmp) 2>/dev/null ||
2464         die "Unable to create temporary file in $TMPDIR."
2465     append TMPFILES $tmp
2466     eval $1=$tmp
2467 }
2468
2469 trap 'rm -f -- $TMPFILES' EXIT
2470
2471 tmpfile TMPASM .asm
2472 tmpfile TMPC   .c
2473 tmpfile TMPE   $EXESUF
2474 tmpfile TMPH   .h
2475 tmpfile TMPO   .o
2476 tmpfile TMPS   .S
2477 tmpfile TMPSH  .sh
2478 tmpfile TMPV   .ver
2479
2480 unset -f mktemp
2481
2482 chmod +x $TMPE
2483
2484 # make sure we can execute files in $TMPDIR
2485 cat > $TMPSH 2>> $logfile <<EOF
2486 #! /bin/sh
2487 EOF
2488 chmod +x $TMPSH >> $logfile 2>&1
2489 if ! $TMPSH >> $logfile 2>&1; then
2490     cat <<EOF
2491 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2492 variable to another directory and make sure that it is not mounted noexec.
2493 EOF
2494     die "Sanity test failed."
2495 fi
2496
2497 ccc_flags(){
2498     for flag; do
2499         case $flag in
2500             -std=c99)           echo -c99                       ;;
2501             -mcpu=*)            echo -arch ${flag#*=}           ;;
2502             -mieee)             echo -ieee                      ;;
2503             -O*|-fast)          echo $flag                      ;;
2504             -fno-math-errno)    echo -assume nomath_errno       ;;
2505             -g)                 echo -g3                        ;;
2506             -Wall)              echo -msg_enable level2         ;;
2507             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2508             -Wl,*)              echo $flag                      ;;
2509             -f*|-W*)                                            ;;
2510             *)                  echo $flag                      ;;
2511         esac
2512    done
2513 }
2514
2515 cparser_flags(){
2516     for flag; do
2517         case $flag in
2518             -Wno-switch)             echo -Wno-switch-enum ;;
2519             -Wno-format-zero-length) ;;
2520             -Wdisabled-optimization) ;;
2521             -Wno-pointer-sign)       echo -Wno-other ;;
2522             *)                       echo $flag ;;
2523         esac
2524     done
2525 }
2526
2527 msvc_common_flags(){
2528     for flag; do
2529         case $flag in
2530             # In addition to specifying certain flags under the compiler
2531             # specific filters, they must be specified here as well or else the
2532             # generic catch all at the bottom will print the original flag.
2533             -Wall)                ;;
2534             -std=c99)             ;;
2535             # Common flags
2536             -fomit-frame-pointer) ;;
2537             -g)                   echo -Z7 ;;
2538             -fno-math-errno)      ;;
2539             -fno-common)          ;;
2540             -fno-signed-zeros)    ;;
2541             -fPIC)                ;;
2542             -mthumb)              ;;
2543             -march=*)             ;;
2544             -lz)                  echo zlib.lib ;;
2545             -lavifil32)           echo vfw32.lib ;;
2546             -lavicap32)           echo vfw32.lib user32.lib ;;
2547             -l*)                  echo ${flag#-l}.lib ;;
2548             *)                    echo $flag ;;
2549         esac
2550     done
2551 }
2552
2553 msvc_flags(){
2554     msvc_common_flags "$@"
2555     for flag; do
2556         case $flag in
2557             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2558                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2559                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2560                                        -wd4273 ;;
2561         esac
2562     done
2563 }
2564
2565 icl_flags(){
2566     msvc_common_flags "$@"
2567     for flag; do
2568         case $flag in
2569             # Despite what Intel's documentation says -Wall, which is supported
2570             # on Windows, does enable remarks so disable them here.
2571             -Wall)                echo $flag -Qdiag-disable:remark ;;
2572             -std=c99)             echo -Qstd=c99 ;;
2573         esac
2574     done
2575 }
2576
2577 pgi_flags(){
2578     for flag; do
2579         case $flag in
2580             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2581             -fomit-frame-pointer) echo -Mnoframe ;;
2582             -g)                   echo -gopt ;;
2583             *)                    echo $flag ;;
2584         esac
2585     done
2586 }
2587
2588 suncc_flags(){
2589     for flag; do
2590         case $flag in
2591             -march=*|-mcpu=*)
2592                 case "${flag#*=}" in
2593                     native)                   echo -xtarget=native       ;;
2594                     v9|niagara)               echo -xarch=sparc          ;;
2595                     ultrasparc)               echo -xarch=sparcvis       ;;
2596                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2597                     i586|pentium)             echo -xchip=pentium        ;;
2598                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2599                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2600                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2601                     pentium4*)          echo -xtarget=pentium4           ;;
2602                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2603                     *-sse3)             echo -xarch=sse3                 ;;
2604                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2605                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2606                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2607                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2608                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2609                     k8|opteron|athlon64|athlon-fx)
2610                                                echo -xarch=sse2a         ;;
2611                     athlon*)                   echo -xarch=pentium_proa  ;;
2612                 esac
2613                 ;;
2614             -std=c99)             echo -xc99              ;;
2615             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2616             -fPIC)                echo -KPIC -xcode=pic32 ;;
2617             -W*,*)                echo $flag              ;;
2618             -f*-*|-W*|-mimpure-text)                      ;;
2619             -shared)              echo -G                 ;;
2620             *)                    echo $flag              ;;
2621         esac
2622     done
2623 }
2624
2625 tms470_flags(){
2626     for flag; do
2627         case $flag in
2628             -march=*|-mcpu=*)
2629                 case "${flag#*=}" in
2630                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2631                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2632                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2633                     armv6*|arm11*)          echo -mv=6   ;;
2634                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2635                                             echo -mv=5e  ;;
2636                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2637                 esac
2638                 ;;
2639             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2640             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2641             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2642             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2643             -msoft-float)   echo --float_support=vfplib       ;;
2644             -O[0-3]|-mf=*)  echo $flag                        ;;
2645             -g)             echo -g -mn                       ;;
2646             -pds=*)         echo $flag                        ;;
2647             -D*|-I*)        echo $flag                        ;;
2648             --gcc|--abi=*)  echo $flag                        ;;
2649             -me)            echo $flag                        ;;
2650         esac
2651     done
2652 }
2653
2654 probe_cc(){
2655     pfx=$1
2656     _cc=$2
2657
2658     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2659     unset _ld_o _ldflags _ld_lib _ld_path
2660     unset _depflags _DEPCMD _DEPFLAGS
2661     _flags_filter=echo
2662
2663     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2664         _type=llvm_gcc
2665         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2666         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2667         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2668         _cflags_speed='-O3'
2669         _cflags_size='-Os'
2670     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2671         _type=gcc
2672         gcc_version=$($_cc --version | head -n1)
2673         gcc_basever=$($_cc -dumpversion)
2674         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2675         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2676         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2677         if ! $_cc -dumpversion | grep -q '^2\.'; then
2678             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2679         fi
2680         _cflags_speed='-O3'
2681         _cflags_size='-Os'
2682     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2683         _type=icc
2684         _ident=$($_cc --version | head -n1)
2685         _depflags='-MMD'
2686         _cflags_speed='-O3'
2687         _cflags_size='-Os'
2688         _cflags_noopt='-O1'
2689     elif $_cc -v 2>&1 | grep -q xlc; then
2690         _type=xlc
2691         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2692         _cflags_speed='-O5'
2693         _cflags_size='-O5 -qcompact'
2694     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2695         _type=ccc
2696         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2697         _DEPFLAGS='-M'
2698         _cflags_speed='-fast'
2699         _cflags_size='-O1'
2700         _flags_filter=ccc_flags
2701     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2702         test -d "$sysroot" || die "No valid sysroot specified."
2703         _type=armcc
2704         _ident=$($_cc --vsn | head -n1)
2705         armcc_conf="$PWD/armcc.conf"
2706         $_cc --arm_linux_configure                 \
2707              --arm_linux_config_file="$armcc_conf" \
2708              --configure_sysroot="$sysroot"        \
2709              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2710              die "Error creating armcc configuration file."
2711         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2712         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2713         as_default="${cross_prefix}gcc"
2714         _depflags='-MMD'
2715         _cflags_speed='-O3'
2716         _cflags_size='-Os'
2717     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2718         _type=tms470
2719         _ident=$($_cc -version | head -n1 | tr -s ' ')
2720         _flags='--gcc --abi=eabi -me'
2721         _cc_e='-ppl -fe=$@'
2722         _cc_o='-fe=$@'
2723         _depflags='-ppa -ppd=$(@:.o=.d)'
2724         _cflags_speed='-O3 -mf=5'
2725         _cflags_size='-O3 -mf=2'
2726         _flags_filter=tms470_flags
2727     elif $_cc -v 2>&1 | grep -q clang; then
2728         _type=clang
2729         _ident=$($_cc --version | head -n1)
2730         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2731         _cflags_speed='-O3'
2732         _cflags_size='-Os'
2733     elif $_cc -V 2>&1 | grep -q Sun; then
2734         _type=suncc
2735         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2736         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2737         _DEPFLAGS='-xM1 -xc99'
2738         _ldflags='-std=c99'
2739         _cflags_speed='-O5'
2740         _cflags_size='-O5 -xspace'
2741         _flags_filter=suncc_flags
2742     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2743         _type=pathscale
2744         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2745         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2746         _cflags_speed='-O2'
2747         _cflags_size='-Os'
2748         _flags_filter='filter_out -Wdisabled-optimization'
2749     elif $_cc -v 2>&1 | grep -q Open64; then
2750         _type=open64
2751         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2752         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2753         _cflags_speed='-O2'
2754         _cflags_size='-Os'
2755         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2756     elif $_cc -V 2>&1 | grep -q Portland; then
2757         _type=pgi
2758         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2759         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2760         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2761         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2762         _cflags_noopt="-O1"
2763         _flags_filter=pgi_flags
2764     elif $_cc 2>&1 | grep -q Microsoft; then
2765         _type=msvc
2766         _ident=$($cc 2>&1 | head -n1)
2767         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2768         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2769         _cflags_speed="-O2"
2770         _cflags_size="-O1"
2771         if $_cc 2>&1 | grep -q Linker; then
2772             _ld_o='-out:$@'
2773         else
2774             _ld_o='-Fe$@'
2775         fi
2776         _cc_o='-Fo$@'
2777         _cc_e='-P -Fi$@'
2778         _flags_filter=msvc_flags
2779         _ld_lib='lib%.a'
2780         _ld_path='-libpath:'
2781         _flags='-nologo'
2782         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2783         if [ $pfx = hostcc ]; then
2784             append _cflags -Dsnprintf=_snprintf
2785         fi
2786     elif $_cc 2>&1 | grep -q Intel; then
2787         _type=icl
2788         _ident=$($cc 2>&1 | head -n1)
2789         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2790         # Not only is O3 broken on 13.x+ but it is slower on all previous
2791         # versions (tested) as well.
2792         _cflags_speed="-O2"
2793         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2794         if $_cc 2>&1 | grep -q Linker; then
2795             _ld_o='-out:$@'
2796         else
2797             _ld_o='-Fe$@'
2798         fi
2799         _cc_o='-Fo$@'
2800         _cc_e='-P'
2801         _flags_filter=icl_flags
2802         _ld_lib='lib%.a'
2803         _ld_path='-libpath:'
2804         # -Qdiag-error to make icl error when seeing certain unknown arguments
2805         _flags='-nologo -Qdiag-error:4044,10157'
2806         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2807         # with MSVC which enables it by default.
2808         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2809         if [ $pfx = hostcc ]; then
2810             append _cflags -Dsnprintf=_snprintf
2811         fi
2812     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2813         _type=cparser
2814         _ident=$($_cc --version | head -n1)
2815         _depflags='-MMD'
2816         _cflags_speed='-O4'
2817         _cflags_size='-O2'
2818         _flags_filter=cparser_flags
2819     fi
2820
2821     eval ${pfx}_type=\$_type
2822     eval ${pfx}_ident=\$_ident
2823 }
2824
2825 set_ccvars(){
2826     eval ${1}_C=\${_cc_c-\${${1}_C}}
2827     eval ${1}_E=\${_cc_e-\${${1}_E}}
2828     eval ${1}_O=\${_cc_o-\${${1}_O}}
2829
2830     if [ -n "$_depflags" ]; then
2831         eval ${1}_DEPFLAGS=\$_depflags
2832     else
2833         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2834         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2835         eval DEP${1}FLAGS=\$_flags
2836     fi
2837 }
2838
2839 probe_cc cc "$cc"
2840 cflags_filter=$_flags_filter
2841 cflags_speed=$_cflags_speed
2842 cflags_size=$_cflags_size
2843 cflags_noopt=$_cflags_noopt
2844 add_cflags $_flags $_cflags
2845 cc_ldflags=$_ldflags
2846 set_ccvars CC
2847
2848 probe_cc hostcc "$host_cc"
2849 host_cflags_filter=$_flags_filter
2850 add_host_cflags  $_flags $_cflags
2851 set_ccvars HOSTCC
2852
2853 test -n "$cc_type" && enable $cc_type ||
2854     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2855
2856 : ${as_default:=$cc}
2857 : ${dep_cc_default:=$cc}
2858 : ${ld_default:=$cc}
2859 : ${host_ld_default:=$host_cc}
2860 set_default ar as dep_cc ld host_ld
2861
2862 probe_cc as "$as"
2863 asflags_filter=$_flags_filter
2864 add_asflags $_flags $_cflags
2865 set_ccvars AS
2866
2867 probe_cc ld "$ld"
2868 ldflags_filter=$_flags_filter
2869 add_ldflags $_flags $_ldflags
2870 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2871 LD_O=${_ld_o-$LD_O}
2872 LD_LIB=${_ld_lib-$LD_LIB}
2873 LD_PATH=${_ld_path-$LD_PATH}
2874
2875 probe_cc hostld "$host_ld"
2876 host_ldflags_filter=$_flags_filter
2877 add_host_ldflags $_flags $_ldflags
2878 HOSTLD_O=${_ld_o-$HOSTLD_O}
2879
2880 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2881     probe_cc depcc "$dep_cc"
2882     CCDEP=${_DEPCMD:-$DEPCMD}
2883     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2884     DEPCCFLAGS=$_flags
2885 fi
2886
2887 if $ar 2>&1 | grep -q Microsoft; then
2888     arflags="-nologo"
2889     ar_o='-out:$@'
2890 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2891     arflags="rq"
2892     ar_o='$@'
2893 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2894     arflags='-Xany -r -c'
2895     ar_o='$@'
2896 else
2897     arflags="rc"
2898     ar_o='$@'
2899 fi
2900
2901 add_cflags $extra_cflags
2902 add_asflags $extra_cflags
2903
2904 if test -n "$sysroot"; then
2905     case "$cc_type" in
2906         gcc|llvm_gcc|clang)
2907             add_cppflags --sysroot="$sysroot"
2908             add_ldflags --sysroot="$sysroot"
2909         ;;
2910         tms470)
2911             add_cppflags -I"$sysinclude"
2912             add_ldflags  --sysroot="$sysroot"
2913         ;;
2914     esac
2915 fi
2916
2917 if test "$cpu" = host; then
2918     enabled cross_compile &&
2919         die "--cpu=host makes no sense when cross-compiling."
2920
2921     case "$cc_type" in
2922         gcc|llvm_gcc)
2923             check_native(){
2924                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2925                 sed -n "/cc1.*$1=/{
2926                             s/.*$1=\\([^ ]*\\).*/\\1/
2927                             p
2928                             q
2929                         }" $TMPE
2930             }
2931             cpu=$(check_native -march || check_native -mcpu)
2932         ;;
2933     esac
2934
2935     test "${cpu:-host}" = host &&
2936         die "--cpu=host not supported with compiler $cc"
2937 fi
2938
2939 # Deal with common $arch aliases
2940 case "$arch" in
2941     aarch64|arm64)
2942         arch="aarch64"
2943     ;;
2944     arm*)
2945         arch="arm"
2946     ;;
2947     mips*|IP*)
2948         arch="mips"
2949     ;;
2950     parisc*|hppa*)
2951         arch="parisc"
2952     ;;
2953     "Power Macintosh"|ppc*|powerpc*)
2954         arch="ppc"
2955     ;;
2956     s390|s390x)
2957         arch="s390"
2958     ;;
2959     sh4|sh)
2960         arch="sh4"
2961     ;;
2962     sun4u|sparc*)
2963         arch="sparc"
2964     ;;
2965     tilegx|tile-gx)
2966         arch="tilegx"
2967     ;;
2968     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2969         arch="x86"
2970     ;;
2971 esac
2972
2973 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2974 enable $arch
2975
2976 # Add processor-specific flags
2977 if enabled aarch64; then
2978
2979     case $cpu in
2980         armv*)
2981             cpuflags="-march=$cpu"
2982         ;;
2983         *)
2984             cpuflags="-mcpu=$cpu"
2985         ;;
2986     esac
2987
2988 elif enabled alpha; then
2989
2990     cpuflags="-mcpu=$cpu"
2991
2992 elif enabled arm; then
2993
2994     check_arm_arch() {
2995         check_cpp_condition stddef.h \
2996             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2997             $cpuflags
2998     }
2999
3000     probe_arm_arch() {
3001         if   check_arm_arch 4;        then echo armv4;
3002         elif check_arm_arch 4T;       then echo armv4t;
3003         elif check_arm_arch 5;        then echo armv5;
3004         elif check_arm_arch 5E;       then echo armv5e;
3005         elif check_arm_arch 5T;       then echo armv5t;
3006         elif check_arm_arch 5TE;      then echo armv5te;
3007         elif check_arm_arch 5TEJ;     then echo armv5te;
3008         elif check_arm_arch 6;        then echo armv6;
3009         elif check_arm_arch 6J;       then echo armv6j;
3010         elif check_arm_arch 6K;       then echo armv6k;
3011         elif check_arm_arch 6Z;       then echo armv6z;
3012         elif check_arm_arch 6ZK;      then echo armv6zk;
3013         elif check_arm_arch 6T2;      then echo armv6t2;
3014         elif check_arm_arch 7;        then echo armv7;
3015         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3016         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3017         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3018         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3019         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3020         fi
3021     }
3022
3023     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3024
3025     case $cpu in
3026         armv*)
3027             cpuflags="-march=$cpu"
3028             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3029         ;;
3030         *)
3031             cpuflags="-mcpu=$cpu"
3032             case $cpu in
3033                 cortex-a*)                               subarch=armv7a  ;;
3034                 cortex-r*)                               subarch=armv7r  ;;
3035                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3036                 arm11*)                                  subarch=armv6   ;;
3037                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3038                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3039                 *)                             subarch=$(probe_arm_arch) ;;
3040             esac
3041         ;;
3042     esac
3043
3044     case "$subarch" in
3045         armv5t*)    enable fast_clz                ;;
3046         armv[6-8]*) enable fast_clz fast_unaligned ;;
3047     esac
3048
3049 elif enabled avr32; then
3050
3051     case $cpu in
3052         ap7[02]0[0-2])
3053             subarch="avr32_ap"
3054             cpuflags="-mpart=$cpu"
3055         ;;
3056         ap)
3057             subarch="avr32_ap"
3058             cpuflags="-march=$cpu"
3059         ;;
3060         uc3[ab]*)
3061             subarch="avr32_uc"
3062             cpuflags="-mcpu=$cpu"
3063         ;;
3064         uc)
3065             subarch="avr32_uc"
3066             cpuflags="-march=$cpu"
3067         ;;
3068     esac
3069
3070 elif enabled bfin; then
3071
3072     cpuflags="-mcpu=$cpu"
3073
3074 elif enabled mips; then
3075
3076     cpuflags="-march=$cpu"
3077
3078 elif enabled ppc; then
3079
3080     case $(tolower $cpu) in
3081         601|ppc601|powerpc601)
3082             cpuflags="-mcpu=601"
3083             disable altivec
3084         ;;
3085         603*|ppc603*|powerpc603*)
3086             cpuflags="-mcpu=603"
3087             disable altivec
3088         ;;
3089         604*|ppc604*|powerpc604*)
3090             cpuflags="-mcpu=604"
3091             disable altivec
3092         ;;
3093         g3|75*|ppc75*|powerpc75*)
3094             cpuflags="-mcpu=750"
3095             disable altivec
3096         ;;
3097         g4|745*|ppc745*|powerpc745*)
3098             cpuflags="-mcpu=7450"
3099         ;;
3100         74*|ppc74*|powerpc74*)
3101             cpuflags="-mcpu=7400"
3102         ;;
3103         g5|970|ppc970|powerpc970)
3104             cpuflags="-mcpu=970"
3105         ;;
3106         power[3-7]*)
3107             cpuflags="-mcpu=$cpu"
3108         ;;
3109         cell)
3110             cpuflags="-mcpu=cell"
3111             enable ldbrx
3112         ;;
3113         e500mc)
3114             cpuflags="-mcpu=e500mc"
3115             disable altivec
3116         ;;
3117         e500v2)
3118             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3119             disable altivec
3120         ;;
3121         e500)
3122             cpuflags="-mcpu=8540 -mhard-float"
3123             disable altivec
3124         ;;
3125     esac
3126
3127 elif enabled sparc; then
3128
3129     case $cpu in
3130         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3131             cpuflags="-mcpu=$cpu"
3132             disable vis
3133         ;;
3134         ultrasparc*|niagara[234])
3135             cpuflags="-mcpu=$cpu"
3136         ;;
3137     esac
3138
3139 elif enabled x86; then
3140
3141     case $cpu in
3142         i[345]86|pentium)
3143             cpuflags="-march=$cpu"
3144             disable mmx
3145         ;;
3146         # targets that do NOT support nopl and conditional mov (cmov)
3147         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3148             cpuflags="-march=$cpu"
3149             disable i686
3150         ;;
3151         # targets that do support nopl and conditional mov (cmov)
3152         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3153             cpuflags="-march=$cpu"
3154             enable i686
3155             enable fast_cmov
3156         ;;
3157         # targets that do support conditional mov but on which it's slow
3158         pentium4|pentium4m|prescott|nocona)
3159             cpuflags="-march=$cpu"
3160             enable i686
3161             disable fast_cmov
3162         ;;
3163     esac
3164
3165 fi
3166
3167 if [ "$cpu" != generic ]; then
3168     add_cflags  $cpuflags
3169     add_asflags $cpuflags
3170 fi
3171
3172 # compiler sanity check
3173 check_exec <<EOF
3174 int main(void){ return 0; }
3175 EOF
3176 if test "$?" != 0; then
3177     echo "$cc is unable to create an executable file."
3178     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3179         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3180         echo "Only do this if you know what cross compiling means."
3181     fi
3182     die "C compiler test failed."
3183 fi
3184
3185 add_cppflags -D_ISOC99_SOURCE
3186 check_cflags -std=c99
3187 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3188 #include <stdlib.h>
3189 EOF
3190 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3191 #include <stdlib.h>
3192 EOF
3193
3194 add_host_cppflags -D_ISOC99_SOURCE
3195 check_host_cflags -std=c99
3196 check_host_cflags -Wall
3197 check_host_cflags -O3
3198
3199 check_64bit(){
3200     arch32=$1
3201     arch64=$2
3202     expr=$3
3203     check_code cc "" "int test[2*($expr) - 1]" &&
3204         subarch=$arch64 || subarch=$arch32
3205 }
3206
3207 case "$arch" in
3208     aarch64|alpha|ia64)
3209         spic=$shared
3210     ;;
3211     mips)
3212         check_64bit mips mips64 '_MIPS_SIM > 1'
3213         spic=$shared
3214     ;;
3215     parisc)
3216         check_64bit parisc parisc64 'sizeof(void *) > 4'
3217         spic=$shared
3218     ;;
3219     ppc)
3220         check_64bit ppc ppc64 'sizeof(void *) > 4'
3221         spic=$shared
3222     ;;
3223     sparc)
3224         check_64bit sparc sparc64 'sizeof(void *) > 4'
3225         spic=$shared
3226     ;;
3227     x86)
3228         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3229         if test "$subarch" = "x86_64"; then
3230             spic=$shared
3231         fi
3232     ;;
3233 esac
3234
3235 enable $subarch
3236 enabled spic && enable_weak pic
3237
3238 # OS specific
3239 case $target_os in
3240     aix)
3241         SHFLAGS=-shared
3242         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3243         enabled shared && add_ldflags -Wl,-brtl
3244         ;;
3245     haiku)
3246         prefix_default="/boot/common"
3247         network_extralibs="-lnetwork"
3248         host_libs=
3249         ;;
3250     sunos)
3251         SHFLAGS='-shared -Wl,-h,$$(@F)'
3252         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3253         network_extralibs="-lsocket -lnsl"
3254         # When using suncc to build, the Solaris linker will mark
3255         # an executable with each instruction set encountered by
3256         # the Solaris assembler.  As our libraries contain their own
3257         # guards for processor-specific code, instead suppress
3258         # generation of the HWCAPS ELF section on Solaris x86 only.
3259         enabled_all suncc x86 &&
3260             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3261             add_ldflags -Wl,-M,mapfile
3262         nm_default='nm -P -g'
3263         ;;
3264     netbsd)
3265         disable symver
3266         oss_indev_extralibs="-lossaudio"
3267         oss_outdev_extralibs="-lossaudio"
3268         ;;
3269     openbsd|bitrig)
3270         disable symver
3271         SHFLAGS='-shared'
3272         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3273         SLIB_INSTALL_LINKS=
3274         oss_indev_extralibs="-lossaudio"
3275         oss_outdev_extralibs="-lossaudio"
3276         ;;
3277     dragonfly)
3278         disable symver
3279         ;;
3280     freebsd)
3281         ;;
3282     bsd/os)
3283         add_extralibs -lpoll -lgnugetopt
3284         ;;
3285     darwin)
3286         gas="gas-preprocessor.pl $cc"
3287         enabled ppc && add_asflags -force_cpusubtype_ALL
3288         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3289         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3290         add_ldflags -Wl,-dynamic,-search_paths_first
3291         SLIBSUF=".dylib"
3292         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3293         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3294         objformat="macho"
3295         enabled x86_64 && objformat="macho64"
3296         enabled_any pic shared ||
3297             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3298         ;;
3299     mingw32*)
3300         if test $target_os = "mingw32ce"; then
3301             disable network
3302         else
3303             target_os=mingw32
3304         fi
3305         LIBTARGET=i386
3306         if enabled x86_64; then
3307             LIBTARGET="i386:x86-64"
3308         elif enabled arm; then
3309             LIBTARGET=arm-wince
3310         fi
3311         check_ldflags -Wl,--nxcompat
3312         check_ldflags -Wl,--dynamicbase
3313         shlibdir_default="$bindir_default"
3314         SLIBPREF=""
3315         SLIBSUF=".dll"
3316         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3317         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3318         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3319         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3320         SLIB_INSTALL_LINKS=
3321         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3322         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3323         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3324         objformat="win32"
3325         dlltool="${cross_prefix}dlltool"
3326         ranlib=:
3327         enable dos_paths
3328         ;;
3329     win32|win64)
3330         disable symver
3331         if enabled shared; then
3332             # Link to the import library instead of the normal static library
3333             # for shared libs.
3334             LD_LIB='%.lib'
3335             # Cannot build both shared and static libs with MSVC or icl.
3336             disable static
3337         fi
3338         shlibdir_default="$bindir_default"
3339         SLIBPREF=""
3340         SLIBSUF=".dll"
3341         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3342         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3343         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3344         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3345         SLIB_INSTALL_LINKS=
3346         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3347         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3348         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3349         objformat="win32"
3350         ranlib=:
3351         enable dos_paths
3352         ;;
3353     cygwin*)
3354         target_os=cygwin
3355         shlibdir_default="$bindir_default"
3356         SLIBPREF="cyg"
3357         SLIBSUF=".dll"
3358         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3359         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3360         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3361         SLIB_INSTALL_LINKS=
3362         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3363         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3364         objformat="win32"
3365         enable dos_paths
3366         ;;
3367     *-dos|freedos|opendos)
3368         network_extralibs="-lsocket"
3369         objformat="coff"
3370         enable dos_paths
3371         add_cppflags -U__STRICT_ANSI__
3372         ;;
3373     linux)
3374         enable dv1394
3375         ;;
3376     irix*)
3377         target_os=irix
3378         ranlib="echo ignoring ranlib"
3379         ;;
3380     os/2*)
3381         ln_s="cp -f"
3382         objformat="aout"
3383         add_cppflags -D_GNU_SOURCE
3384         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3385         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3386         LIBSUF="_s.a"
3387         SLIBPREF=""
3388         SLIBSUF=".dll"
3389         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3390         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3391         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3392             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3393             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3394             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3395             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3396             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3397         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3398             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3399         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3400         enable dos_paths
3401         ;;
3402     gnu/kfreebsd)
3403         add_cppflags -D_BSD_SOURCE
3404         ;;
3405     gnu)
3406         ;;
3407     qnx)
3408         add_cppflags -D_QNX_SOURCE
3409         network_extralibs="-lsocket"
3410         ;;
3411     symbian)
3412         SLIBSUF=".dll"
3413         enable dos_paths
3414         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3415         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3416         add_ldflags -Wl,--target1-abs,--no-undefined \
3417                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3418                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3419         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3420                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3421                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3422         ;;
3423     osf1)
3424         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3425         ;;
3426     minix)
3427         ;;
3428     plan9)
3429         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3430                      -D_REENTRANT_SOURCE        \
3431                      -D_RESEARCH_SOURCE         \
3432                      -DFD_SETSIZE=96            \
3433                      -DHAVE_SOCK_OPTS
3434         add_compat strtod.o strtod=avpriv_strtod
3435         network_extralibs='-lbsd'
3436         exeobjs=compat/plan9/main.o
3437         disable avserver
3438         cp_f='cp'
3439         ;;
3440     none)
3441         ;;
3442     *)
3443         die "Unknown OS '$target_os'."
3444         ;;
3445 esac
3446
3447 # determine libc flavour
3448
3449 probe_libc(){
3450     pfx=$1
3451     pfx_no_=${pfx%_}
3452     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3453     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3454         eval ${pfx}libc_type=uclibc
3455         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3456     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3457         eval ${pfx}libc_type=glibc
3458         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3459     # MinGW headers can be installed on Cygwin, so check for newlib first.
3460     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3461         eval ${pfx}libc_type=newlib
3462         add_${pfx}cppflags -U__STRICT_ANSI__
3463     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3464     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3465         eval ${pfx}libc_type=mingw64
3466         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3467         eval test \$${pfx_no_}cc_type = "gcc" &&
3468             add_${pfx}cppflags -D__printf__=__gnu_printf__
3469     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3470          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3471         eval ${pfx}libc_type=mingw32
3472         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3473             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3474             die "ERROR: MinGW32 runtime version must be >= 3.15."
3475         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3476         eval test \$${pfx_no_}cc_type = "gcc" &&
3477             add_${pfx}cppflags -D__printf__=__gnu_printf__
3478     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3479         eval ${pfx}libc_type=msvcrt
3480         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3481         # 0x601 by default unless something else is set by the user.
3482         # This can easily lead to us detecting functions only present
3483         # in such new versions and producing binaries requiring windows 7.0.
3484         # Therefore explicitly set the default to XP unless the user has
3485         # set something else on the command line.
3486         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3487             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3488     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3489         eval ${pfx}libc_type=klibc
3490     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3491         eval ${pfx}libc_type=bionic
3492     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3493         eval ${pfx}libc_type=solaris
3494         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3495     fi
3496 }
3497
3498 probe_libc
3499 test -n "$libc_type" && enable libc_$libc_type
3500 probe_libc host_
3501 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3502
3503 case $libc_type in
3504     bionic)
3505         add_compat strtod.o strtod=avpriv_strtod
3506         ;;
3507     msvcrt)
3508         add_compat strtod.o strtod=avpriv_strtod
3509         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3510                                      _snprintf=avpriv_snprintf  \
3511                                      vsnprintf=avpriv_vsnprintf
3512         ;;
3513 esac
3514
3515 # hacks for compiler/libc/os combinations
3516
3517 if enabled_all tms470 libc_glibc; then
3518     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3519     add_cppflags -D__USER_LABEL_PREFIX__=
3520     add_cppflags -D__builtin_memset=memset
3521     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3522     add_cflags   -pds=48    # incompatible redefinition of macro
3523 fi
3524
3525 if enabled_all ccc libc_glibc; then
3526     add_ldflags -Wl,-z,now  # calls to libots crash without this
3527 fi
3528
3529 esc(){
3530     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3531 }
3532
3533 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3534
3535 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3536
3537 set_default $PATHS_LIST
3538 set_default nm
3539
3540 # we need to build at least one lib type
3541 if ! enabled_any static shared; then
3542     cat <<EOF
3543 At least one library type must be built.
3544 Specify --enable-static to build the static libraries or --enable-shared to
3545 build the shared libraries as well. To only build the shared libraries specify
3546 --disable-static in addition to --enable-shared.
3547 EOF
3548     exit 1;
3549 fi
3550
3551 die_license_disabled() {
3552     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3553 }
3554
3555 die_license_disabled gpl libcdio
3556 die_license_disabled gpl libx264
3557 die_license_disabled gpl libx265
3558 die_license_disabled gpl libxavs
3559 die_license_disabled gpl libxvid
3560 die_license_disabled gpl x11grab
3561
3562 die_license_disabled nonfree libfaac
3563 die_license_disabled nonfree libfdk_aac
3564 die_license_disabled nonfree openssl
3565
3566 die_license_disabled version3 libopencore_amrnb
3567 die_license_disabled version3 libopencore_amrwb
3568 die_license_disabled version3 libvo_aacenc
3569 die_license_disabled version3 libvo_amrwbenc
3570
3571 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3572
3573 disabled optimizations || check_cflags -fomit-frame-pointer
3574
3575 enable_weak_pic() {
3576     disabled pic && return
3577     enable pic
3578     add_cppflags -DPIC
3579     case "$target_os" in
3580     mingw*|cygwin*)
3581         ;;
3582     *)
3583         add_cflags -fPIC
3584         ;;
3585     esac
3586     add_asflags  -fPIC
3587 }
3588
3589 enabled pic && enable_weak_pic
3590
3591 check_cc <<EOF || die "Symbol mangling check failed."
3592 int ff_extern;
3593 EOF
3594 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3595 extern_prefix=${sym%%ff_extern*}
3596
3597 check_cc <<EOF && enable_weak inline_asm
3598 void foo(void) { __asm__ volatile ("" ::); }
3599 EOF
3600
3601 _restrict=
3602 for restrict_keyword in restrict __restrict__ __restrict; do
3603     check_cc <<EOF && _restrict=$restrict_keyword && break
3604 void foo(char * $restrict_keyword p);
3605 EOF
3606 done
3607
3608 check_cc <<EOF && enable pragma_deprecated
3609 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3610 EOF
3611
3612 check_cc <<EOF && enable attribute_packed
3613 struct { int x; } __attribute__((packed)) x;
3614 EOF
3615
3616 check_cc <<EOF && enable attribute_may_alias
3617 union { int x; } __attribute__((may_alias)) x;
3618 EOF
3619
3620 check_cc <<EOF || die "endian test failed"
3621 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3622 EOF
3623 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3624
3625 check_inline_asm inline_asm_labels '"1:\n"'
3626
3627 if enabled aarch64; then
3628     # internal assembler in clang 3.3 does not support this instruction
3629     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3630     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3631
3632     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3633
3634 elif enabled alpha; then
3635
3636     check_cflags -mieee
3637
3638 elif enabled arm; then
3639
3640     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3641     enabled thumb && check_cflags -mthumb || check_cflags -marm
3642     nogas=die
3643
3644     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3645         enable vfp_args
3646     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3647         case "${cross_prefix:-$cc}" in
3648             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3649             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3650 __asm__ (".eabi_attribute 28, 1");
3651 int main(void) { return 0; }
3652 EOF
3653         esac
3654         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3655     fi
3656
3657     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3658     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3659     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3660     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3661     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3662     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3663
3664     [ $target_os = linux ] ||
3665         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3666             $ARCH_EXT_LIST_ARM
3667
3668     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3669
3670     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3671
3672 elif enabled mips; then
3673
3674     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3675
3676 elif enabled parisc; then
3677
3678     if enabled gcc; then
3679         case $($cc -dumpversion) in
3680             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3681         esac
3682     fi
3683
3684 elif enabled ppc; then
3685
3686     enable local_aligned_8 local_aligned_16
3687
3688     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3689     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3690     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3691     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3692
3693     # AltiVec flags: The FSF version of GCC differs from the Apple version
3694     if enabled altivec; then
3695         nogas=warn
3696         check_cflags -maltivec -mabi=altivec &&
3697         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3698         check_cflags -faltivec
3699
3700         # check if our compiler supports Motorola AltiVec C API
3701         check_cc <<EOF || disable altivec
3702 $inc_altivec_h
3703 int main(void) {
3704     vector signed int v1 = (vector signed int) { 0 };
3705     vector signed int v2 = (vector signed int) { 1 };
3706     v1 = vec_add(v1, v2);
3707     return 0;
3708 }
3709 EOF
3710
3711         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3712     fi
3713
3714 elif enabled sparc; then
3715
3716     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3717
3718 elif enabled x86; then
3719
3720     check_builtin rdtsc    intrin.h   "__rdtsc()"
3721     check_builtin mm_empty mmintrin.h "_mm_empty()"
3722
3723     enable local_aligned_8 local_aligned_16
3724
3725     # check whether EBP is available on x86
3726     # As 'i' is stored on the stack, this program will crash
3727     # if the base pointer is used to access it because the
3728     # base pointer is cleared in the inline assembly code.
3729     check_exec_crash <<EOF && enable ebp_available
3730 volatile int i=0;
3731 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3732 return i;
3733 EOF
3734
3735     # check whether EBX is available on x86
3736     check_inline_asm ebx_available '""::"b"(0)' &&
3737         check_inline_asm ebx_available '"":::"%ebx"'
3738
3739     # check whether xmm clobbers are supported
3740     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3741
3742     # check whether binutils is new enough to compile SSSE3/MMXEXT
3743     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3744     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3745
3746     if ! disabled_any asm mmx yasm; then
3747         if check_cmd $yasmexe --version; then
3748             enabled x86_64 && yasm_extra="-m amd64"
3749             yasm_debug="-g dwarf2"
3750         elif check_cmd nasm -v; then
3751             yasmexe=nasm
3752             yasm_debug="-g -F dwarf"
3753             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3754         fi
3755
3756         YASMFLAGS="-f $objformat $yasm_extra"
3757         enabled pic               && append YASMFLAGS "-DPIC"
3758         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3759         case "$objformat" in
3760             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3761         esac
3762
3763         check_yasm "movbe ecx, [5]" && enable yasm ||
3764             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3765         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3766         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3767         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3768         check_yasm "CPU amdnop" || disable cpunop
3769     fi
3770
3771     case "$cpu" in
3772         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3773             disable fast_clz
3774         ;;
3775     esac
3776
3777 fi
3778
3779 if enabled asm; then
3780     as=${gas:=$as}
3781     check_as <<EOF && enable gnu_as || \
3782         $nogas "GNU assembler not found, install gas-preprocessor"
3783 .macro m n
3784 \n: .int 0
3785 .endm
3786 m x
3787 EOF
3788 fi
3789
3790 check_ldflags -Wl,--as-needed
3791
3792 if check_func dlopen; then
3793     ldl=
3794 elif check_func dlopen -ldl; then
3795     ldl=-ldl
3796 fi
3797
3798 if ! disabled network; then
3799     check_type "sys/types.h sys/socket.h" socklen_t
3800     check_type netdb.h "struct addrinfo"
3801     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3802     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3803     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3804     check_type netinet/in.h "struct sockaddr_in6"
3805     check_type poll.h "struct pollfd"
3806     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3807     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3808     check_type netinet/sctp.h "struct sctp_event_subscribe"
3809     check_func getaddrinfo $network_extralibs
3810     check_func getservbyport $network_extralibs
3811     check_func inet_aton $network_extralibs
3812     # Prefer arpa/inet.h over winsock2
3813     if check_header arpa/inet.h ; then
3814         check_func closesocket
3815     elif check_header winsock2.h ; then
3816         check_func_headers winsock2.h closesocket -lws2 &&
3817             network_extralibs="-lws2" ||
3818         { check_func_headers winsock2.h closesocket -lws2_32 &&
3819             network_extralibs="-lws2_32"; } || disable winsock2_h network
3820         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3821         check_type ws2tcpip.h socklen_t
3822         check_type ws2tcpip.h "struct addrinfo"
3823         check_type ws2tcpip.h "struct group_source_req"
3824         check_type ws2tcpip.h "struct ip_mreq_source"
3825         check_type ws2tcpip.h "struct ipv6_mreq"
3826         check_type winsock2.h "struct pollfd"
3827         check_type ws2tcpip.h "struct sockaddr_in6"
3828         check_type ws2tcpip.h "struct sockaddr_storage"
3829         check_struct winsock2.h "struct sockaddr" sa_len
3830     else
3831         disable network
3832     fi
3833 fi
3834
3835 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3836 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3837
3838 check_func  fcntl
3839 check_func  fork
3840 check_func_headers stdlib.h getenv
3841 check_func  gethrtime
3842 check_func  getopt
3843 check_func  getrusage
3844 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3845 check_func  gettimeofday
3846 check_func  isatty
3847 check_func  localtime_r
3848 check_func  ${malloc_prefix}memalign            && enable memalign
3849 check_func  mkstemp
3850 check_func  mmap
3851 check_func  mprotect
3852 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3853 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3854 check_func  setrlimit
3855 check_func  strerror_r
3856 check_func  strptime
3857 check_func  sched_getaffinity
3858 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3859 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3860 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3861 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3862 check_func  sysconf
3863 check_func  sysctl
3864 check_func  usleep
3865 check_func_headers io.h setmode
3866 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3867 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3868 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3869 check_func_headers windows.h GetProcessAffinityMask
3870 check_func_headers windows.h GetProcessTimes
3871 check_func_headers windows.h GetSystemTimeAsFileTime
3872 check_func_headers windows.h MapViewOfFile
3873 check_func_headers windows.h SetConsoleTextAttribute
3874 check_func_headers windows.h Sleep
3875 check_func_headers windows.h VirtualAlloc
3876
3877 check_header direct.h
3878 check_header dlfcn.h
3879 check_header dxva.h
3880 check_header dxva2api.h
3881 check_header io.h
3882 check_header malloc.h
3883 check_header poll.h
3884 check_header sys/mman.h
3885 check_header sys/param.h
3886 check_header sys/resource.h
3887 check_header sys/select.h
3888 check_header sys/time.h
3889 check_header sys/un.h
3890 check_header unistd.h
3891 check_header vdpau/vdpau.h
3892 check_header vdpau/vdpau_x11.h
3893 check_header VideoDecodeAcceleration/VDADecoder.h
3894 check_header windows.h
3895 check_header X11/extensions/XvMClib.h
3896
3897 if ! disabled w32threads && ! enabled pthreads; then
3898     check_func_headers "windows.h process.h" _beginthreadex &&
3899         enable w32threads || disable w32threads
3900 fi
3901
3902 # check for some common methods of building with pthread support
3903 # do this before the optional library checks as some of them require pthreads
3904 if ! disabled pthreads && ! enabled w32threads; then
3905     enable pthreads
3906     if check_func pthread_join -pthread; then
3907         add_cflags -pthread
3908         add_extralibs -pthread
3909     elif check_func pthread_join -pthreads; then
3910         add_cflags -pthreads
3911         add_extralibs -pthreads
3912     elif check_func pthread_join -lpthreadGC2; then
3913         add_extralibs -lpthreadGC2
3914     elif check_lib pthread.h pthread_join -lpthread; then
3915         :
3916     elif ! check_func pthread_join; then
3917         disable pthreads
3918     fi
3919 fi
3920
3921 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3922 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3923
3924 check_lib math.h sin -lm && LIBM="-lm"
3925 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3926
3927 atan2f_args=2
3928 ldexpf_args=2
3929 powf_args=2
3930
3931 for func in $MATH_FUNCS; do
3932     eval check_mathfunc $func \${${func}_args:-1}
3933 done
3934
3935 # these are off by default, so fail if requested and not available
3936 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
3937                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
3938                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
3939 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3940 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3941 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3942 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3943 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
3944 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3945                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3946                                done || die "ERROR: libgsm not found"; }
3947 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3948 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3949 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3950 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3951 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3952 enabled libopenjpeg       && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3953 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3954 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3955 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3956 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3957 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3958 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3959 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3960 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3961 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3962 enabled libvpx            && {
3963     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3964                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3965     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3966                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3967     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3968     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3969 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3970 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
3971 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3972                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3973                                die "ERROR: libx264 version must be >= 0.118."; }
3974 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
3975                              { check_cpp_condition x265.h "X265_BUILD >= 7" ||
3976                                die "ERROR: libx265 version must be >= 7."; }
3977 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3978 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3979 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3980                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3981                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3982                                die "ERROR: openssl not found"; }
3983
3984 if enabled gnutls; then
3985     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3986     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3987 fi
3988
3989 # libdc1394 check
3990 if enabled libdc1394; then
3991     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3992         enable libdc1394_2; } ||
3993     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3994         enable libdc1394_1; } ||
3995     die "ERROR: No version of libdc1394 found "
3996 fi
3997
3998 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3999     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4000     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4001     enable sdl
4002 fi
4003
4004 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4005 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4006
4007 check_header linux/fb.h
4008 check_header linux/videodev2.h
4009 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4010
4011 check_header sys/videoio.h
4012
4013 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4014 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4015 # w32api 3.12 had it defined wrong
4016 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4017
4018 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4019 { check_header dev/bktr/ioctl_meteor.h &&
4020   check_header dev/bktr/ioctl_bt848.h; } ||
4021 { check_header machine/ioctl_meteor.h &&
4022   check_header machine/ioctl_bt848.h; } ||
4023 { check_header dev/video/meteor/ioctl_meteor.h &&
4024   check_header dev/video/bktr/ioctl_bt848.h; } ||
4025 check_header dev/ic/bt8xx.h
4026
4027 check_header sndio.h
4028 check_header sys/soundcard.h
4029 check_header soundcard.h
4030
4031 enabled_any alsa_indev alsa_outdev &&
4032     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4033
4034 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4035     check_func jack_port_get_latency_range -ljack
4036
4037 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4038
4039 if enabled libcdio; then
4040     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4041     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4042 fi
4043
4044 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4045
4046 enabled x11grab                                           &&
4047 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4048 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4049 { enabled xlib || die "ERROR: Xlib not found"; }
4050
4051 enabled vdpau &&
4052     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4053     disable vdpau
4054
4055 enabled vdpau && enabled xlib &&
4056     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4057     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4058     enable vdpau_x11
4059
4060 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4061
4062 # add some useful compiler flags if supported
4063 check_cflags -Wdeclaration-after-statement
4064 check_cflags -Wall
4065 check_cflags -Wdisabled-optimization
4066 check_cflags -Wpointer-arith
4067 check_cflags -Wredundant-decls
4068 check_cflags -Wcast-qual
4069 check_cflags -Wwrite-strings
4070 check_cflags -Wtype-limits
4071 check_cflags -Wundef
4072 check_cflags -Wmissing-prototypes
4073 check_cflags -Wstrict-prototypes
4074 enabled extra_warnings && check_cflags -Winline
4075
4076 check_disable_warning(){
4077     warning_flag=-W${1#-Wno-}
4078     test_cflags $warning_flag && add_cflags $1
4079 }
4080
4081 check_disable_warning -Wno-parentheses
4082 check_disable_warning -Wno-switch
4083 check_disable_warning -Wno-format-zero-length
4084 check_disable_warning -Wno-pointer-sign
4085
4086 # add some linker flags
4087 check_ldflags -Wl,--warn-common
4088 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4089 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4090
4091 # add some strip flags
4092 # -wN '..@*' is more selective than -x, but not available everywhere.
4093 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4094
4095 enabled neon_clobber_test &&
4096     check_ldflags -Wl,--wrap,avcodec_open2              \
4097                   -Wl,--wrap,avcodec_decode_audio4      \
4098                   -Wl,--wrap,avcodec_decode_video2      \
4099                   -Wl,--wrap,avcodec_decode_subtitle2   \
4100                   -Wl,--wrap,avcodec_encode_audio2      \
4101                   -Wl,--wrap,avcodec_encode_video2      \
4102                   -Wl,--wrap,avcodec_encode_subtitle    \
4103                   -Wl,--wrap,avresample_convert ||
4104     disable neon_clobber_test
4105
4106 enabled xmm_clobber_test &&
4107     check_ldflags -Wl,--wrap,avcodec_open2              \
4108                   -Wl,--wrap,avcodec_decode_audio4      \
4109                   -Wl,--wrap,avcodec_decode_video2      \
4110                   -Wl,--wrap,avcodec_decode_subtitle2   \
4111                   -Wl,--wrap,avcodec_encode_audio2      \
4112                   -Wl,--wrap,avcodec_encode_video2      \
4113                   -Wl,--wrap,avcodec_encode_subtitle    \
4114                   -Wl,--wrap,avresample_convert         \
4115                   -Wl,--wrap,sws_scale ||
4116     disable xmm_clobber_test
4117
4118 echo "X{};" > $TMPV
4119 if test_ldflags -Wl,--version-script,$TMPV; then
4120     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4121     check_cc <<EOF && enable symver_asm_label
4122 void ff_foo(void) __asm__ ("av_foo@VERSION");
4123 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4124 EOF
4125     check_cc <<EOF && enable symver_gnu_asm
4126 __asm__(".symver ff_foo,av_foo@VERSION");
4127 void ff_foo(void) {}
4128 EOF
4129 fi
4130
4131 if [ -z "$optflags" ]; then
4132     if enabled small; then
4133         optflags=$cflags_size
4134     elif enabled optimizations; then
4135         optflags=$cflags_speed
4136     else
4137         optflags=$cflags_noopt
4138     fi
4139 fi
4140
4141 check_optflags(){
4142     check_cflags "$@"
4143     enabled lto && check_ldflags "$@"
4144 }
4145
4146
4147 if enabled lto; then
4148     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4149     check_cflags  -flto
4150     check_ldflags -flto $cpuflags
4151 fi
4152
4153 check_optflags $optflags
4154 check_optflags -fno-math-errno
4155 check_optflags -fno-signed-zeros
4156
4157 if enabled icc; then
4158     # Just warnings, no remarks
4159     check_cflags -w1
4160     # -wd: Disable following warnings
4161     # 144, 167, 556: -Wno-pointer-sign
4162     # 1292: attribute "foo" ignored
4163     # 1419: external declaration in primary source file
4164     # 10006: ignoring unknown option -fno-signed-zeros
4165     # 10148: ignoring unknown option -Wno-parentheses
4166     # 10156: ignoring option '-W'; no argument required
4167     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4168     # 11030: Warning unknown option --as-needed
4169     # 10156: ignoring option '-export'; no argument required
4170     check_ldflags -wd10156,11030
4171     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4172     enable ebp_available
4173     if enabled x86_32; then
4174         icc_version=$($cc -dumpversion)
4175         test ${icc_version%%.*} -ge 11 &&
4176             check_cflags -falign-stack=maintain-16-byte ||
4177             disable aligned_stack
4178     fi
4179 elif enabled ccc; then
4180     # disable some annoying warnings
4181     add_cflags -msg_disable bitnotint
4182     add_cflags -msg_disable mixfuncvoid
4183     add_cflags -msg_disable nonstandcast
4184     add_cflags -msg_disable unsupieee
4185 elif enabled gcc; then
4186     check_optflags -fno-tree-vectorize
4187     check_cflags -Werror=implicit-function-declaration
4188     check_cflags -Werror=missing-prototypes
4189     check_cflags -Werror=return-type
4190     check_cflags -Werror=declaration-after-statement
4191     check_cflags -Werror=vla
4192     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4193 elif enabled llvm_gcc; then
4194     check_cflags -mllvm -stack-alignment=16
4195 elif enabled clang; then
4196     check_cflags -mllvm -stack-alignment=16
4197     check_cflags -Qunused-arguments
4198     check_cflags -Werror=implicit-function-declaration
4199     check_cflags -Werror=missing-prototypes
4200     check_cflags -Werror=return-type
4201 elif enabled cparser; then
4202     add_cflags -Wno-missing-variable-declarations
4203     add_cflags -Wno-empty-statement
4204 elif enabled armcc; then
4205     # 2523: use of inline assembler is deprecated
4206     add_cflags -W${armcc_opt},--diag_suppress=2523
4207     add_cflags -W${armcc_opt},--diag_suppress=1207
4208     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4209     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4210     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4211     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4212 elif enabled tms470; then
4213     add_cflags -pds=824 -pds=837
4214     disable inline_asm
4215 elif enabled pathscale; then
4216     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4217 elif enabled_any msvc icl; then
4218     enabled x86_32 && disable aligned_stack
4219     enabled_all x86_32 debug && add_cflags -Oy-
4220     enabled debug && add_ldflags -debug
4221     enable pragma_deprecated
4222     if enabled icl; then
4223         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4224         # (correctly) on icl 13.x.
4225         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4226             add_cflags -Qansi-alias
4227         # icl will pass the inline asm tests but inline asm is currently
4228         # not supported (build will fail)
4229         disable inline_asm
4230     fi
4231 fi
4232
4233 case $as_type in
4234     clang)
4235         add_asflags -Qunused-arguments
4236     ;;
4237 esac
4238
4239 case $ld_type in
4240     clang)
4241         check_ldflags -Qunused-arguments
4242     ;;
4243 esac
4244
4245 case $target_os in
4246     osf1)
4247         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4248     ;;
4249     plan9)
4250         add_cppflags -Dmain=plan9_main
4251     ;;
4252 esac
4253
4254 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4255
4256 check_deps $CONFIG_LIST       \
4257            $CONFIG_EXTRA      \
4258            $HAVE_LIST         \
4259            $ALL_COMPONENTS    \
4260
4261 ! enabled_any memalign posix_memalign aligned_malloc &&
4262     enabled_any $need_memalign && enable memalign_hack
4263
4264 for thread in $THREADS_LIST; do
4265     if enabled $thread; then
4266         test -n "$thread_type" &&
4267             die "ERROR: Only one thread type must be selected." ||
4268             thread_type="$thread"
4269     fi
4270 done
4271
4272 echo "install prefix            $prefix"
4273 echo "source path               $source_path"
4274 echo "C compiler                $cc"
4275 echo "C library                 $libc_type"
4276 if test "$host_cc" != "$cc"; then
4277     echo "host C compiler           $host_cc"
4278     echo "host C library            $host_libc_type"
4279 fi
4280 echo "ARCH                      $arch ($cpu)"
4281 if test "$build_suffix" != ""; then
4282     echo "build suffix              $build_suffix"
4283 fi
4284 if test "$extra_version" != ""; then
4285     echo "version string suffix     $extra_version"
4286 fi
4287 echo "big-endian                ${bigendian-no}"
4288 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4289 if enabled x86; then
4290     echo "${yasmexe}                      ${yasm-no}"
4291     echo "MMX enabled               ${mmx-no}"
4292     echo "MMXEXT enabled            ${mmxext-no}"
4293     echo "3DNow! enabled            ${amd3dnow-no}"
4294     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4295     echo "SSE enabled               ${sse-no}"
4296     echo "SSSE3 enabled             ${ssse3-no}"
4297     echo "AVX enabled               ${avx-no}"
4298     echo "XOP enabled               ${xop-no}"
4299     echo "FMA3 enabled              ${fma3-no}"
4300     echo "FMA4 enabled              ${fma4-no}"
4301     echo "i686 features enabled     ${i686-no}"
4302     echo "CMOV is fast              ${fast_cmov-no}"
4303     echo "EBX available             ${ebx_available-no}"
4304     echo "EBP available             ${ebp_available-no}"
4305 fi
4306 if enabled aarch64; then
4307     echo "NEON enabled              ${neon-no}"
4308     echo "VFP enabled               ${vfp-no}"
4309 fi
4310 if enabled arm; then
4311     echo "ARMv5TE enabled           ${armv5te-no}"
4312     echo "ARMv6 enabled             ${armv6-no}"
4313     echo "ARMv6T2 enabled           ${armv6t2-no}"
4314     echo "VFP enabled               ${vfp-no}"
4315     echo "NEON enabled              ${neon-no}"
4316 fi
4317 if enabled ppc; then
4318     echo "AltiVec enabled           ${altivec-no}"
4319     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4320     echo "dcbzl available           ${dcbzl-no}"
4321 fi
4322 if enabled sparc; then
4323     echo "VIS enabled               ${vis-no}"
4324 fi
4325 echo "debug symbols             ${debug-no}"
4326 echo "optimize for size         ${small-no}"
4327 echo "optimizations             ${optimizations-no}"
4328 echo "static                    ${static-no}"
4329 echo "shared                    ${shared-no}"
4330 echo "new filter support        ${avfilter-no}"
4331 echo "network support           ${network-no}"
4332 echo "threading support         ${thread_type-no}"
4333 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4334 echo "SDL support               ${sdl-no}"
4335 test -n "$random_seed" &&
4336     echo "random seed               ${random_seed}"
4337 echo
4338
4339 echo "External libraries:"
4340 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4341 echo
4342
4343 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4344     echo "Enabled ${type}s:"
4345     eval list=\$$(toupper $type)_LIST
4346     print_enabled '_*' $list | print_3_columns
4347     echo
4348 done
4349
4350 license="LGPL version 2.1 or later"
4351 if enabled nonfree; then
4352     license="nonfree and unredistributable"
4353 elif enabled gplv3; then
4354     license="GPL version 3 or later"
4355 elif enabled lgplv3; then
4356     license="LGPL version 3 or later"
4357 elif enabled gpl; then
4358     license="GPL version 2 or later"
4359 fi
4360
4361 echo "License: $license"
4362
4363 echo "Creating config.mak and config.h..."
4364
4365 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4366
4367 config_files="$TMPH config.mak"
4368
4369 cat > config.mak <<EOF
4370 # Automatically generated by configure - do not modify!
4371 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4372 prefix=$prefix
4373 LIBDIR=\$(DESTDIR)$libdir
4374 SHLIBDIR=\$(DESTDIR)$shlibdir
4375 INCDIR=\$(DESTDIR)$incdir
4376 BINDIR=\$(DESTDIR)$bindir
4377 DATADIR=\$(DESTDIR)$datadir
4378 DOCDIR=\$(DESTDIR)$docdir
4379 MANDIR=\$(DESTDIR)$mandir
4380 SRC_PATH=$source_path
4381 CC_IDENT=$cc_ident
4382 ARCH=$arch
4383 CC=$cc
4384 AS=$as
4385 LD=$ld
4386 DEPCC=$dep_cc
4387 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4388 DEPAS=$as
4389 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4390 YASM=$yasmexe
4391 DEPYASM=$yasmexe
4392 AR=$ar
4393 ARFLAGS=$arflags
4394 AR_O=$ar_o
4395 RANLIB=$ranlib
4396 STRIP=$strip
4397 LN_S=$ln_s
4398 CPPFLAGS=$CPPFLAGS
4399 CFLAGS=$CFLAGS
4400 ASFLAGS=$ASFLAGS
4401 AS_C=$AS_C
4402 AS_O=$AS_O
4403 CC_C=$CC_C
4404 CC_E=$CC_E
4405 CC_O=$CC_O
4406 LD_O=$LD_O
4407 LD_LIB=$LD_LIB
4408 LD_PATH=$LD_PATH
4409 DLLTOOL=$dlltool
4410 LDFLAGS=$LDFLAGS
4411 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4412 STRIPFLAGS=$STRIPFLAGS
4413 YASMFLAGS=$YASMFLAGS
4414 BUILDSUF=$build_suffix
4415 FULLNAME=$FULLNAME
4416 LIBPREF=$LIBPREF
4417 LIBSUF=$LIBSUF
4418 LIBNAME=$LIBNAME
4419 SLIBPREF=$SLIBPREF
4420 SLIBSUF=$SLIBSUF
4421 EXESUF=$EXESUF
4422 EXTRA_VERSION=$extra_version
4423 CCDEP=$CCDEP
4424 CCDEP_FLAGS=$CCDEP_FLAGS
4425 ASDEP=$ASDEP
4426 ASDEP_FLAGS=$ASDEP_FLAGS
4427 CC_DEPFLAGS=$CC_DEPFLAGS
4428 AS_DEPFLAGS=$AS_DEPFLAGS
4429 HOSTCC=$host_cc
4430 HOSTLD=$host_ld
4431 HOSTCFLAGS=$host_cflags
4432 HOSTCPPFLAGS=$host_cppflags
4433 HOSTEXESUF=$HOSTEXESUF
4434 HOSTLDFLAGS=$host_ldflags
4435 HOSTLIBS=$host_libs
4436 DEPHOSTCC=$host_cc
4437 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4438 HOSTCCDEP=$HOSTCCDEP
4439 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4440 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4441 HOSTCC_C=$HOSTCC_C
4442 HOSTCC_O=$HOSTCC_O
4443 HOSTLD_O=$HOSTLD_O
4444 TARGET_EXEC=$target_exec $target_exec_args
4445 TARGET_PATH=$target_path
4446 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4447 CFLAGS-avplay=$sdl_cflags
4448 ZLIB=$($ldflags_filter -lz)
4449 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4450 EXTRALIBS=$extralibs
4451 COMPAT_OBJS=$compat_objs
4452 EXEOBJS=$exeobjs
4453 INSTALL=install
4454 LIBTARGET=${LIBTARGET}
4455 SLIBNAME=${SLIBNAME}
4456 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4457 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4458 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4459 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4460 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4461 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4462 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4463 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4464 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4465 EOF
4466
4467 get_version(){
4468     lcname=lib${1}
4469     name=$(toupper $lcname)
4470     file=$source_path/$lcname/version.h
4471     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4472     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4473     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4474     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4475     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4476 }
4477
4478 map 'get_version $v' $LIBRARY_LIST
4479
4480 print_program_libs(){
4481     eval "program_libs=\$${1}_libs"
4482     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4483 }
4484
4485 map 'print_program_libs $v' $PROGRAM_LIST
4486
4487 cat > $TMPH <<EOF
4488 /* Automatically generated by configure - do not modify! */
4489 #ifndef LIBAV_CONFIG_H
4490 #define LIBAV_CONFIG_H
4491 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4492 #define LIBAV_LICENSE "$(c_escape $license)"
4493 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4494 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4495 #define restrict $_restrict
4496 #define EXTERN_PREFIX "${extern_prefix}"
4497 #define EXTERN_ASM ${extern_prefix}
4498 #define SLIBSUF "$SLIBSUF"
4499 EOF
4500
4501 test -n "$malloc_prefix" &&
4502     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4503
4504 if enabled yasm; then
4505     append config_files $TMPASM
4506     printf '' >$TMPASM
4507 fi
4508
4509 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4510
4511 print_config ARCH_   "$config_files" $ARCH_LIST
4512 print_config HAVE_   "$config_files" $HAVE_LIST
4513 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4514                                      $CONFIG_EXTRA      \
4515                                      $ALL_COMPONENTS    \
4516
4517 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4518
4519 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4520 cp_if_changed $TMPH config.h
4521 touch .config
4522
4523 enabled yasm && cp_if_changed $TMPASM config.asm
4524
4525 cat > $TMPH <<EOF
4526 /* Generated by ffconf */
4527 #ifndef AVUTIL_AVCONFIG_H
4528 #define AVUTIL_AVCONFIG_H
4529 EOF
4530
4531 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4532
4533 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4534
4535 cp_if_changed $TMPH libavutil/avconfig.h
4536
4537 test -n "$WARNINGS" && printf "\n$WARNINGS"
4538
4539 # build pkg-config files
4540
4541 pkgconfig_generate(){
4542     name=$1
4543     shortname=${name#lib}${build_suffix}
4544     comment=$2
4545     version=$3
4546     libs=$4
4547     requires=$5
4548     enabled ${name#lib} || return 0
4549     mkdir -p $name
4550     cat <<EOF > $name/$name.pc
4551 prefix=$prefix
4552 exec_prefix=\${prefix}
4553 libdir=$libdir
4554 includedir=$incdir
4555
4556 Name: $name
4557 Description: $comment
4558 Version: $version
4559 Requires: $(enabled shared || echo $requires)
4560 Requires.private: $(enabled shared && echo $requires)
4561 Conflicts:
4562 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4563 Libs.private: $(enabled shared && echo $libs)
4564 Cflags: -I\${includedir}
4565 EOF
4566     cat <<EOF > $name/$name-uninstalled.pc
4567 prefix=
4568 exec_prefix=
4569 libdir=\${pcfiledir}
4570 includedir=${source_path}
4571
4572 Name: $name
4573 Description: $comment
4574 Version: $version
4575 Requires: $requires
4576 Conflicts:
4577 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4578 Cflags: -I\${includedir}
4579 EOF
4580 }
4581
4582 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4583 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4584 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4585 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4586
4587 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4588 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4589 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4590 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4591 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4592 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4593 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"