build: Use pkg-config for openjpeg
[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_SIMD='
1253     amd3dnow
1254     amd3dnowext
1255     avx
1256     avx2
1257     xop
1258     fma3
1259     fma4
1260     mmx
1261     mmxext
1262     sse
1263     sse2
1264     sse3
1265     sse4
1266     sse42
1267     ssse3
1268 '
1269
1270 ARCH_EXT_LIST_X86="
1271     $ARCH_EXT_LIST_X86_SIMD
1272     cpunop
1273     i686
1274 "
1275
1276 ARCH_EXT_LIST="
1277     $ARCH_EXT_LIST_ARM
1278     $ARCH_EXT_LIST_X86
1279     altivec
1280     ppc4xx
1281     vis
1282 "
1283
1284 HAVE_LIST_CMDLINE='
1285     inline_asm
1286     symver
1287     yasm
1288 '
1289
1290 HAVE_LIST_PUB='
1291     bigendian
1292     fast_unaligned
1293 '
1294
1295 MATH_FUNCS="
1296     atanf
1297     atan2f
1298     cbrtf
1299     cosf
1300     exp2
1301     exp2f
1302     expf
1303     isinf
1304     isnan
1305     ldexpf
1306     llrint
1307     llrintf
1308     log2
1309     log2f
1310     log10f
1311     lrint
1312     lrintf
1313     powf
1314     rint
1315     round
1316     roundf
1317     sinf
1318     trunc
1319     truncf
1320 "
1321
1322 HAVE_LIST="
1323     $ARCH_EXT_LIST
1324     $(add_suffix _external $ARCH_EXT_LIST)
1325     $(add_suffix _inline   $ARCH_EXT_LIST)
1326     $HAVE_LIST_CMDLINE
1327     $HAVE_LIST_PUB
1328     $THREADS_LIST
1329     $ATOMICS_LIST
1330     $MATH_FUNCS
1331     aligned_malloc
1332     aligned_stack
1333     alsa_asoundlib_h
1334     altivec_h
1335     arpa_inet_h
1336     asm_mod_q
1337     atomic_cas_ptr
1338     atomics_native
1339     attribute_may_alias
1340     attribute_packed
1341     cdio_paranoia_h
1342     cdio_paranoia_paranoia_h
1343     closesocket
1344     CommandLineToArgvW
1345     CryptGenRandom
1346     dcbzl
1347     dev_bktr_ioctl_bt848_h
1348     dev_bktr_ioctl_meteor_h
1349     dev_ic_bt8xx_h
1350     dev_video_bktr_ioctl_bt848_h
1351     dev_video_meteor_ioctl_meteor_h
1352     direct_h
1353     dlfcn_h
1354     dlopen
1355     dos_paths
1356     dxva_h
1357     ebp_available
1358     ebx_available
1359     fast_64bit
1360     fast_clz
1361     fast_cmov
1362     fcntl
1363     fork
1364     getaddrinfo
1365     gethrtime
1366     getopt
1367     GetProcessAffinityMask
1368     GetProcessMemoryInfo
1369     GetProcessTimes
1370     GetSystemTimeAsFileTime
1371     getrusage
1372     getservbyport
1373     gettimeofday
1374     gnu_as
1375     gsm_h
1376     ibm_asm
1377     inet_aton
1378     io_h
1379     inline_asm_labels
1380     isatty
1381     jack_port_get_latency_range
1382     ldbrx
1383     libc_msvcrt
1384     libdc1394_1
1385     libdc1394_2
1386     local_aligned_16
1387     local_aligned_8
1388     localtime_r
1389     loongson
1390     machine_ioctl_bt848_h
1391     machine_ioctl_meteor_h
1392     machine_rw_barrier
1393     malloc_h
1394     MapViewOfFile
1395     memalign
1396     MemoryBarrier
1397     mkstemp
1398     mm_empty
1399     mmap
1400     mprotect
1401     nanosleep
1402     poll_h
1403     posix_memalign
1404     pragma_deprecated
1405     rdtsc
1406     sched_getaffinity
1407     sdl
1408     SetConsoleTextAttribute
1409     setmode
1410     setrlimit
1411     Sleep
1412     sndio_h
1413     socklen_t
1414     soundcard_h
1415     strerror_r
1416     strptime
1417     struct_addrinfo
1418     struct_group_source_req
1419     struct_ip_mreq_source
1420     struct_ipv6_mreq
1421     struct_pollfd
1422     struct_rusage_ru_maxrss
1423     struct_sockaddr_in6
1424     struct_sockaddr_sa_len
1425     struct_sockaddr_storage
1426     struct_v4l2_frmivalenum_discrete
1427     symver_asm_label
1428     symver_gnu_asm
1429     sync_val_compare_and_swap
1430     sysconf
1431     sysctl
1432     sys_mman_h
1433     sys_param_h
1434     sys_resource_h
1435     sys_select_h
1436     sys_soundcard_h
1437     sys_time_h
1438     sys_un_h
1439     sys_videoio_h
1440     threads
1441     unistd_h
1442     usleep
1443     vdpau_x11
1444     vfp_args
1445     VirtualAlloc
1446     windows_h
1447     winsock2_h
1448     xform_asm
1449     xlib
1450     xmm_clobbers
1451 "
1452
1453 # options emitted with CONFIG_ prefix but not available on the command line
1454 CONFIG_EXTRA="
1455     aandcttables
1456     ac3dsp
1457     audio_frame_queue
1458     dsputil
1459     gcrypt
1460     golomb
1461     gplv3
1462     h263dsp
1463     h264chroma
1464     h264dsp
1465     h264pred
1466     h264qpel
1467     hpeldsp
1468     huffman
1469     intrax8
1470     lgplv3
1471     lpc
1472     mpegaudio
1473     mpegaudiodsp
1474     mpegvideo
1475     mpegvideoenc
1476     nettle
1477     rangecoder
1478     riffdec
1479     riffenc
1480     rtpdec
1481     rtpenc_chain
1482     sinewin
1483     videodsp
1484     vp3dsp
1485 "
1486
1487 CMDLINE_SELECT="
1488     $ARCH_EXT_LIST
1489     $CONFIG_LIST
1490     $HAVE_LIST_CMDLINE
1491     $THREADS_LIST
1492     asm
1493     cross_compile
1494     debug
1495     extra_warnings
1496     logging
1497     lto
1498     optimizations
1499 "
1500
1501 PATHS_LIST='
1502     bindir
1503     datadir
1504     docdir
1505     incdir
1506     libdir
1507     mandir
1508     prefix
1509     shlibdir
1510 '
1511
1512 CMDLINE_SET="
1513     $PATHS_LIST
1514     ar
1515     arch
1516     as
1517     build_suffix
1518     cc
1519     cpu
1520     cross_prefix
1521     dep_cc
1522     extra_version
1523     host_cc
1524     host_cflags
1525     host_ld
1526     host_ldflags
1527     host_libs
1528     host_os
1529     ld
1530     logfile
1531     malloc_prefix
1532     nm
1533     optflags
1534     pkg_config
1535     random_seed
1536     samples
1537     sysinclude
1538     sysroot
1539     target_exec
1540     target_os
1541     target_path
1542     target_samples
1543     toolchain
1544 "
1545
1546 CMDLINE_APPEND="
1547     extra_cflags
1548     host_cppflags
1549 "
1550
1551 # code dependency declarations
1552
1553 # architecture extensions
1554
1555 armv5te_deps="arm"
1556 armv6_deps="arm"
1557 armv6t2_deps="arm"
1558 neon_deps_any="aarch64 arm"
1559 vfp_deps_any="aarch64 arm"
1560 vfpv3_deps="vfp"
1561
1562 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1563
1564 altivec_deps="ppc"
1565 ppc4xx_deps="ppc"
1566
1567 vis_deps="sparc"
1568
1569 cpunop_deps="i686"
1570 x86_64_select="i686"
1571 x86_64_suggest="fast_cmov"
1572
1573 amd3dnow_deps="mmx"
1574 amd3dnowext_deps="amd3dnow"
1575 i686_deps="x86"
1576 mmx_deps="x86"
1577 mmxext_deps="mmx"
1578 sse_deps="mmxext"
1579 sse2_deps="sse"
1580 sse3_deps="sse2"
1581 ssse3_deps="sse3"
1582 sse4_deps="ssse3"
1583 sse42_deps="sse4"
1584 avx_deps="sse42"
1585 xop_deps="avx"
1586 fma3_deps="avx"
1587 fma4_deps="avx"
1588 avx2_deps="avx"
1589
1590 mmx_external_deps="yasm"
1591 mmx_inline_deps="inline_asm"
1592 mmx_suggest="mmx_external mmx_inline"
1593
1594 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1595     eval dep=\$${ext}_deps
1596     eval ${ext}_external_deps='"${dep}_external"'
1597     eval ${ext}_inline_deps='"${dep}_inline"'
1598     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1599 done
1600
1601 aligned_stack_if_any="aarch64 ppc x86"
1602 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1603 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1604 fast_unaligned_if_any="aarch64 ppc x86"
1605
1606 need_memalign="altivec neon sse"
1607
1608 # system capabilities
1609 log2_deps="!libc_msvcrt"
1610
1611 symver_if_any="symver_asm_label symver_gnu_asm"
1612
1613 # threading support
1614 atomics_gcc_if="sync_val_compare_and_swap"
1615 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1616 atomics_win32_if="MemoryBarrier"
1617 atomics_native_if_any="$ATOMICS_LIST"
1618 w32threads_deps="atomics_native"
1619 threads_if_any="$THREADS_LIST"
1620
1621 # subsystems
1622 dct_select="rdft"
1623 error_resilience_select="dsputil"
1624 lpc_select="dsputil"
1625 mdct_select="fft"
1626 rdft_select="fft"
1627 mpegaudio_select="mpegaudiodsp"
1628 mpegaudiodsp_select="dct"
1629 mpegvideo_select="dsputil hpeldsp videodsp"
1630 mpegvideoenc_select="mpegvideo"
1631
1632 # decoders / encoders
1633 aac_decoder_select="mdct sinewin"
1634 aac_encoder_select="audio_frame_queue mdct sinewin"
1635 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1636 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1637 ac3_encoder_select="mdct ac3dsp dsputil"
1638 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1639 aic_decoder_select="dsputil golomb"
1640 alac_encoder_select="lpc"
1641 als_decoder_select="dsputil"
1642 amrnb_decoder_select="lsp"
1643 amrwb_decoder_select="lsp"
1644 amv_decoder_select="sp5x_decoder"
1645 ape_decoder_select="dsputil"
1646 asv1_decoder_select="dsputil"
1647 asv1_encoder_select="dsputil"
1648 asv2_decoder_select="dsputil"
1649 asv2_encoder_select="dsputil"
1650 atrac1_decoder_select="mdct sinewin"
1651 atrac3_decoder_select="mdct"
1652 atrac3p_decoder_select="mdct sinewin"
1653 bink_decoder_select="dsputil hpeldsp"
1654 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1655 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1656 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1657 cllc_decoder_select="dsputil"
1658 comfortnoise_encoder_select="lpc"
1659 cook_decoder_select="dsputil mdct sinewin"
1660 cscd_decoder_select="lzo"
1661 cscd_decoder_suggest="zlib"
1662 dca_decoder_select="mdct"
1663 dnxhd_decoder_select="dsputil"
1664 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1665 dvvideo_decoder_select="dsputil"
1666 dvvideo_encoder_select="dsputil"
1667 dxa_decoder_deps="zlib"
1668 eac3_decoder_select="ac3_decoder"
1669 eac3_encoder_select="ac3_encoder"
1670 eamad_decoder_select="aandcttables dsputil mpegvideo"
1671 eatgq_decoder_select="aandcttables dsputil"
1672 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1673 ffv1_decoder_select="dsputil golomb rangecoder"
1674 ffv1_encoder_select="dsputil rangecoder"
1675 ffvhuff_decoder_select="huffyuv_decoder"
1676 ffvhuff_encoder_select="huffyuv_encoder"
1677 fic_decoder_select="dsputil golomb"
1678 flac_decoder_select="golomb"
1679 flac_encoder_select="dsputil golomb lpc"
1680 flashsv_decoder_deps="zlib"
1681 flashsv_encoder_deps="zlib"
1682 flashsv2_decoder_deps="zlib"
1683 flv_decoder_select="h263_decoder"
1684 flv_encoder_select="h263_encoder"
1685 fourxm_decoder_select="dsputil"
1686 fraps_decoder_select="dsputil huffman"
1687 g2m_decoder_deps="zlib"
1688 g2m_decoder_select="dsputil"
1689 h261_decoder_select="error_resilience mpegvideo"
1690 h261_encoder_select="aandcttables mpegvideoenc"
1691 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1692 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1693 h263i_decoder_select="h263_decoder"
1694 h263p_encoder_select="h263_encoder"
1695 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1696 h264_decoder_suggest="error_resilience"
1697 hevc_decoder_select="dsputil golomb videodsp"
1698 huffyuv_decoder_select="dsputil"
1699 huffyuv_encoder_select="dsputil huffman"
1700 iac_decoder_select="imc_decoder"
1701 imc_decoder_select="dsputil fft mdct sinewin"
1702 indeo3_decoder_select="hpeldsp"
1703 interplay_video_decoder_select="hpeldsp"
1704 jpegls_decoder_select="golomb mjpeg_decoder"
1705 jpegls_encoder_select="golomb"
1706 jv_decoder_select="dsputil"
1707 lagarith_decoder_select="dsputil"
1708 ljpeg_encoder_select="aandcttables mpegvideoenc"
1709 loco_decoder_select="golomb"
1710 mdec_decoder_select="dsputil error_resilience mpegvideo"
1711 metasound_decoder_select="lsp mdct sinewin"
1712 mimic_decoder_select="dsputil hpeldsp"
1713 mjpeg_decoder_select="dsputil hpeldsp"
1714 mjpegb_decoder_select="mjpeg_decoder"
1715 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1716 mlp_decoder_select="dsputil mlp_parser"
1717 motionpixels_decoder_select="dsputil"
1718 mp1_decoder_select="mpegaudio"
1719 mp1float_decoder_select="mpegaudio"
1720 mp2_decoder_select="mpegaudio"
1721 mp2float_decoder_select="mpegaudio"
1722 mp3_decoder_select="mpegaudio"
1723 mp3adu_decoder_select="mpegaudio"
1724 mp3adufloat_decoder_select="mpegaudio"
1725 mp3float_decoder_select="mpegaudio"
1726 mp3on4_decoder_select="mpegaudio"
1727 mp3on4float_decoder_select="mpegaudio"
1728 mpc7_decoder_select="dsputil mpegaudiodsp"
1729 mpc8_decoder_select="dsputil mpegaudiodsp"
1730 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1731 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1732 mpeg1video_decoder_select="error_resilience mpegvideo"
1733 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1734 mpeg2video_decoder_select="error_resilience mpegvideo"
1735 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1736 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1737 mpeg4_encoder_select="h263_encoder"
1738 msmpeg4v1_decoder_select="h263_decoder"
1739 msmpeg4v2_decoder_select="h263_decoder"
1740 msmpeg4v2_encoder_select="h263_encoder"
1741 msmpeg4v3_decoder_select="h263_decoder"
1742 msmpeg4v3_encoder_select="h263_encoder"
1743 mss2_decoder_select="error_resilience vc1_decoder"
1744 mxpeg_decoder_select="mjpeg_decoder"
1745 nellymoser_decoder_select="mdct sinewin"
1746 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1747 nuv_decoder_select="dsputil lzo"
1748 png_decoder_deps="zlib"
1749 png_decoder_select="dsputil"
1750 png_encoder_deps="zlib"
1751 png_encoder_select="dsputil"
1752 prores_decoder_select="dsputil"
1753 prores_encoder_select="dsputil"
1754 qcelp_decoder_select="lsp"
1755 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1756 ra_144_encoder_select="audio_frame_queue lpc"
1757 ralf_decoder_select="golomb"
1758 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1759 rv10_encoder_select="h263_encoder"
1760 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1761 rv20_encoder_select="h263_encoder"
1762 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1763 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1764 shorten_decoder_select="golomb"
1765 sipr_decoder_select="lsp"
1766 sp5x_decoder_select="mjpeg_decoder"
1767 svq1_decoder_select="hpeldsp"
1768 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1769 svq3_decoder_select="h264_decoder hpeldsp mpegvideo"
1770 svq3_decoder_suggest="zlib"
1771 tak_decoder_select="dsputil"
1772 theora_decoder_select="vp3_decoder"
1773 tiff_decoder_suggest="zlib"
1774 tiff_encoder_suggest="zlib"
1775 thp_decoder_select="mjpeg_decoder"
1776 truehd_decoder_select="mlp_decoder"
1777 truemotion2_decoder_select="dsputil"
1778 truespeech_decoder_select="dsputil"
1779 tscc_decoder_deps="zlib"
1780 twinvq_decoder_select="mdct lsp sinewin"
1781 utvideo_decoder_select="dsputil"
1782 utvideo_encoder_select="dsputil huffman"
1783 vble_decoder_select="dsputil"
1784 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1785 vc1image_decoder_select="vc1_decoder"
1786 vorbis_decoder_select="mdct"
1787 vorbis_encoder_select="mdct"
1788 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1789 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1790 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1791 vp6a_decoder_select="vp6_decoder"
1792 vp6f_decoder_select="vp6_decoder"
1793 vp8_decoder_select="h264pred videodsp"
1794 vp9_decoder_select="videodsp"
1795 webp_decoder_select="vp8_decoder"
1796 wmapro_decoder_select="mdct sinewin"
1797 wmav1_decoder_select="mdct sinewin"
1798 wmav1_encoder_select="mdct sinewin"
1799 wmav2_decoder_select="mdct sinewin"
1800 wmav2_encoder_select="mdct sinewin"
1801 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1802 wmv1_decoder_select="h263_decoder"
1803 wmv1_encoder_select="h263_encoder"
1804 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1805 wmv2_encoder_select="h263_encoder"
1806 wmv3_decoder_select="vc1_decoder"
1807 wmv3image_decoder_select="wmv3_decoder"
1808 zerocodec_decoder_deps="zlib"
1809 zlib_decoder_deps="zlib"
1810 zlib_encoder_deps="zlib"
1811 zmbv_decoder_deps="zlib"
1812 zmbv_encoder_deps="zlib"
1813
1814 # hardware accelerators
1815 dxva2_deps="dxva2api_h"
1816 vaapi_deps="va_va_h"
1817 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1818 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1819 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1820
1821 h263_vaapi_hwaccel_deps="vaapi"
1822 h263_vaapi_hwaccel_select="h263_decoder"
1823 h263_vdpau_hwaccel_deps="vdpau"
1824 h263_vdpau_hwaccel_select="h263_decoder"
1825 h264_dxva2_hwaccel_deps="dxva2"
1826 h264_dxva2_hwaccel_select="h264_decoder"
1827 h264_vaapi_hwaccel_deps="vaapi"
1828 h264_vaapi_hwaccel_select="h264_decoder"
1829 h264_vda_hwaccel_deps="vda"
1830 h264_vda_hwaccel_select="h264_decoder"
1831 h264_vdpau_hwaccel_deps="vdpau"
1832 h264_vdpau_hwaccel_select="h264_decoder"
1833 mpeg1_vdpau_hwaccel_deps="vdpau"
1834 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1835 mpeg2_dxva2_hwaccel_deps="dxva2"
1836 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1837 mpeg2_vaapi_hwaccel_deps="vaapi"
1838 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1839 mpeg2_vdpau_hwaccel_deps="vdpau"
1840 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1841 mpeg4_vaapi_hwaccel_deps="vaapi"
1842 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1843 mpeg4_vdpau_hwaccel_deps="vdpau"
1844 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1845 vc1_dxva2_hwaccel_deps="dxva2"
1846 vc1_dxva2_hwaccel_select="vc1_decoder"
1847 vc1_vaapi_hwaccel_deps="vaapi"
1848 vc1_vaapi_hwaccel_select="vc1_decoder"
1849 vc1_vdpau_hwaccel_deps="vdpau"
1850 vc1_vdpau_hwaccel_select="vc1_decoder"
1851 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1852 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1853 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1854
1855 # parsers
1856 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1857 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1858 mpegvideo_parser_select="error_resilience mpegvideo"
1859 vc1_parser_select="mpegvideo"
1860
1861 # external libraries
1862 libfaac_encoder_deps="libfaac"
1863 libfaac_encoder_select="audio_frame_queue"
1864 libfdk_aac_decoder_deps="libfdk_aac"
1865 libfdk_aac_encoder_deps="libfdk_aac"
1866 libfdk_aac_encoder_select="audio_frame_queue"
1867 libgsm_decoder_deps="libgsm"
1868 libgsm_encoder_deps="libgsm"
1869 libgsm_ms_decoder_deps="libgsm"
1870 libgsm_ms_encoder_deps="libgsm"
1871 libilbc_decoder_deps="libilbc"
1872 libilbc_encoder_deps="libilbc"
1873 libmp3lame_encoder_deps="libmp3lame"
1874 libmp3lame_encoder_select="audio_frame_queue"
1875 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1876 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1877 libopencore_amrnb_encoder_select="audio_frame_queue"
1878 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1879 libopenjpeg_decoder_deps="libopenjpeg"
1880 libopenjpeg_encoder_deps="libopenjpeg"
1881 libopus_decoder_deps="libopus"
1882 libopus_encoder_deps="libopus"
1883 libopus_encoder_select="audio_frame_queue"
1884 libschroedinger_decoder_deps="libschroedinger"
1885 libschroedinger_encoder_deps="libschroedinger"
1886 libspeex_decoder_deps="libspeex"
1887 libspeex_encoder_deps="libspeex"
1888 libspeex_encoder_select="audio_frame_queue"
1889 libtheora_encoder_deps="libtheora"
1890 libvo_aacenc_encoder_deps="libvo_aacenc"
1891 libvo_aacenc_encoder_select="audio_frame_queue"
1892 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1893 libvorbis_encoder_deps="libvorbis"
1894 libvorbis_encoder_select="audio_frame_queue"
1895 libvpx_vp8_decoder_deps="libvpx"
1896 libvpx_vp8_encoder_deps="libvpx"
1897 libvpx_vp9_decoder_deps="libvpx"
1898 libvpx_vp9_encoder_deps="libvpx"
1899 libwavpack_encoder_deps="libwavpack"
1900 libwebp_encoder_deps="libwebp"
1901 libx264_encoder_deps="libx264"
1902 libx265_encoder_deps="libx265"
1903 libxavs_encoder_deps="libxavs"
1904 libxvid_encoder_deps="libxvid"
1905
1906 # demuxers / muxers
1907 ac3_demuxer_select="ac3_parser"
1908 asf_demuxer_select="riffdec"
1909 asf_muxer_select="riffenc"
1910 asf_stream_muxer_select="asf_muxer"
1911 avi_demuxer_select="riffdec"
1912 avi_muxer_select="riffenc"
1913 avisynth_demuxer_deps="avisynth"
1914 avisynth_demuxer_select="riffdec"
1915 caf_demuxer_select="riffdec"
1916 dirac_demuxer_select="dirac_parser"
1917 dxa_demuxer_select="riffdec"
1918 eac3_demuxer_select="ac3_parser"
1919 f4v_muxer_select="mov_muxer"
1920 flac_demuxer_select="flac_parser"
1921 hds_muxer_select="flv_muxer"
1922 hls_muxer_select="mpegts_muxer"
1923 ipod_muxer_select="mov_muxer"
1924 ismv_muxer_select="mov_muxer"
1925 matroska_audio_muxer_select="matroska_muxer"
1926 matroska_demuxer_select="riffdec"
1927 matroska_demuxer_suggest="bzlib lzo zlib"
1928 matroska_muxer_select="riffenc"
1929 mmf_muxer_select="riffenc"
1930 mov_demuxer_select="riffdec"
1931 mov_demuxer_suggest="zlib"
1932 mov_muxer_select="riffenc rtpenc_chain"
1933 mp3_demuxer_select="mpegaudio_parser"
1934 mp4_muxer_select="mov_muxer"
1935 mpegts_muxer_select="adts_muxer latm_muxer"
1936 mpegtsraw_demuxer_select="mpegts_demuxer"
1937 mxf_d10_muxer_select="mxf_muxer"
1938 nut_muxer_select="riffenc"
1939 nuv_demuxer_select="riffdec"
1940 ogg_demuxer_select="golomb"
1941 psp_muxer_select="mov_muxer"
1942 rtp_demuxer_select="sdp_demuxer"
1943 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1944 rtsp_demuxer_select="http_protocol rtpdec"
1945 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1946 sap_demuxer_select="sdp_demuxer"
1947 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1948 sdp_demuxer_select="rtpdec"
1949 smoothstreaming_muxer_select="ismv_muxer"
1950 spdif_muxer_select="aac_parser"
1951 tak_demuxer_select="tak_parser"
1952 tg2_muxer_select="mov_muxer"
1953 tgp_muxer_select="mov_muxer"
1954 w64_demuxer_select="wav_demuxer"
1955 wav_demuxer_select="riffdec"
1956 wav_muxer_select="riffenc"
1957 webm_muxer_select="riffenc"
1958 wtv_demuxer_select="riffdec"
1959 xmv_demuxer_select="riffdec"
1960 xwma_demuxer_select="riffdec"
1961
1962 # indevs / outdevs
1963 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1964 alsa_outdev_deps="alsa_asoundlib_h"
1965 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1966 dv1394_indev_deps="dv1394"
1967 dv1394_indev_select="dv_demuxer"
1968 fbdev_indev_deps="linux_fb_h"
1969 jack_indev_deps="jack_jack_h pthreads"
1970 libcdio_indev_deps="libcdio"
1971 libdc1394_indev_deps="libdc1394"
1972 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1973 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1974 pulse_indev_deps="libpulse"
1975 sndio_indev_deps="sndio_h"
1976 sndio_outdev_deps="sndio_h"
1977 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1978 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1979 vfwcap_indev_extralibs="-lavicap32"
1980 x11grab_indev_deps="x11grab XShmCreateImage"
1981
1982 # protocols
1983 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1984 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1985 ffrtmpcrypt_protocol_select="tcp_protocol"
1986 ffrtmphttp_protocol_deps="!librtmp_protocol"
1987 ffrtmphttp_protocol_select="http_protocol"
1988 gopher_protocol_select="network"
1989 httpproxy_protocol_select="tcp_protocol"
1990 http_protocol_select="tcp_protocol"
1991 https_protocol_select="tls_protocol"
1992 librtmp_protocol_deps="librtmp"
1993 librtmpe_protocol_deps="librtmp"
1994 librtmps_protocol_deps="librtmp"
1995 librtmpt_protocol_deps="librtmp"
1996 librtmpte_protocol_deps="librtmp"
1997 mmsh_protocol_select="http_protocol"
1998 mmst_protocol_select="network"
1999 rtmp_protocol_deps="!librtmp_protocol"
2000 rtmp_protocol_select="tcp_protocol"
2001 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2002 rtmps_protocol_deps="!librtmp_protocol"
2003 rtmps_protocol_select="tls_protocol"
2004 rtmpt_protocol_select="ffrtmphttp_protocol"
2005 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2006 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2007 rtp_protocol_select="udp_protocol"
2008 sctp_protocol_deps="struct_sctp_event_subscribe"
2009 sctp_protocol_select="network"
2010 srtp_protocol_select="rtp_protocol"
2011 tcp_protocol_select="network"
2012 tls_protocol_deps_any="openssl gnutls"
2013 tls_protocol_select="tcp_protocol"
2014 udp_protocol_select="network"
2015 unix_protocol_deps="sys_un_h"
2016 unix_protocol_select="network"
2017
2018 # filters
2019 blackframe_filter_deps="gpl"
2020 boxblur_filter_deps="gpl"
2021 cropdetect_filter_deps="gpl"
2022 delogo_filter_deps="gpl"
2023 drawtext_filter_deps="libfreetype"
2024 frei0r_filter_deps="frei0r dlopen"
2025 frei0r_filter_extralibs='$ldl'
2026 frei0r_src_filter_deps="frei0r dlopen"
2027 frei0r_src_filter_extralibs='$ldl'
2028 hqdn3d_filter_deps="gpl"
2029 interlace_filter_deps="gpl"
2030 resample_filter_deps="avresample"
2031 ocv_filter_deps="libopencv"
2032 scale_filter_deps="swscale"
2033
2034 # examples
2035 avcodec_example_deps="avcodec avutil"
2036 filter_audio_example_deps="avfilter avutil"
2037 metadata_example_deps="avformat avutil"
2038 output_example_deps="avcodec avformat avutil swscale"
2039 transcode_aac_example_deps="avcodec avformat avresample"
2040
2041 # libraries
2042 avcodec_deps="avutil"
2043 avdevice_deps="avutil avcodec avformat"
2044 avfilter_deps="avutil"
2045 avformat_deps="avutil avcodec"
2046 avresample_deps="avutil"
2047 swscale_deps="avutil"
2048
2049 # programs
2050 avconv_deps="avcodec avfilter avformat avresample swscale"
2051 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2052                fps_filter null_filter resample_filter scale_filter
2053                setpts_filter trim_filter"
2054 avplay_deps="avcodec avformat avresample swscale sdl"
2055 avplay_libs='$sdl_libs'
2056 avplay_select="rdft"
2057 avprobe_deps="avcodec avformat"
2058 avserver_deps="avformat fork !shared"
2059 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2060
2061 # documentation
2062 pod2man_deps="doc"
2063 texi2html_deps="doc"
2064
2065 # default parameters
2066
2067 logfile="config.log"
2068
2069 # installation paths
2070 prefix_default="/usr/local"
2071 bindir_default='${prefix}/bin'
2072 datadir_default='${prefix}/share/avconv'
2073 docdir_default='${prefix}/share/doc/libav'
2074 incdir_default='${prefix}/include'
2075 libdir_default='${prefix}/lib'
2076 mandir_default='${prefix}/share/man'
2077 shlibdir_default="$libdir_default"
2078
2079 # toolchain
2080 ar_default="ar"
2081 cc_default="gcc"
2082 host_cc_default="gcc"
2083 cp_f="cp -f"
2084 ln_s="ln -s -f"
2085 nm_default="nm -g"
2086 objformat="elf"
2087 pkg_config_default=pkg-config
2088 ranlib="ranlib"
2089 strip="strip"
2090 yasmexe="yasm"
2091
2092 nogas=":"
2093
2094 # machine
2095 arch_default=$(uname -m)
2096 cpu="generic"
2097
2098 # OS
2099 target_os_default=$(tolower $(uname -s))
2100 host_os=$target_os_default
2101
2102 # configurable options
2103 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2104
2105 enable asm
2106 enable debug
2107 enable doc
2108 enable optimizations
2109 enable safe_bitstream_reader
2110 enable static
2111 enable swscale_alpha
2112
2113 # By default, enable only those hwaccels that have no external dependencies.
2114 enable dxva2 vdpau
2115
2116 # build settings
2117 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2118 LIBPREF="lib"
2119 LIBSUF=".a"
2120 FULLNAME='$(NAME)$(BUILDSUF)'
2121 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2122 SLIBPREF="lib"
2123 SLIBSUF=".so"
2124 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2125 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2126 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2127 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2128 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2129 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2130
2131 asflags_filter=echo
2132 cflags_filter=echo
2133 ldflags_filter=echo
2134
2135 AS_C='-c'
2136 AS_O='-o $@'
2137 CC_C='-c'
2138 CC_E='-E -o $@'
2139 CC_O='-o $@'
2140 LD_O='-o $@'
2141 LD_LIB='-l%'
2142 LD_PATH='-L'
2143 HOSTCC_C='-c'
2144 HOSTCC_E='-E -o $@'
2145 HOSTCC_O='-o $@'
2146 HOSTLD_O='-o $@'
2147
2148 host_libs='-lm'
2149 host_cflags_filter=echo
2150 host_ldflags_filter=echo
2151
2152 target_path='$(CURDIR)'
2153
2154 # since the object filename is not given with the -MM flag, the compiler
2155 # is only able to print the basename, and we must add the path ourselves
2156 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2157 DEPFLAGS='-MM'
2158
2159 # find source path
2160 if test -f configure; then
2161     source_path=.
2162 else
2163     source_path=$(cd $(dirname "$0"); pwd)
2164     echo "$source_path" | grep -q '[[:blank:]]' &&
2165         die "Out of tree builds are impossible with whitespace in source path."
2166     test -e "$source_path/config.h" &&
2167         die "Out of tree builds are impossible with config.h in source dir."
2168 fi
2169
2170 for v in "$@"; do
2171     r=${v#*=}
2172     l=${v%"$r"}
2173     r=$(sh_quote "$r")
2174     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2175 done
2176
2177 find_things(){
2178     thing=$1
2179     pattern=$2
2180     file=$source_path/$3
2181     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2182 }
2183
2184 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2185 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2186 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2187 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2188 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2189 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2190 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2191 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2192 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2193 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2194 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2195
2196 ALL_COMPONENTS="
2197     $BSF_LIST
2198     $DECODER_LIST
2199     $DEMUXER_LIST
2200     $ENCODER_LIST
2201     $FILTER_LIST
2202     $HWACCEL_LIST
2203     $INDEV_LIST
2204     $MUXER_LIST
2205     $OUTDEV_LIST
2206     $PARSER_LIST
2207     $PROTOCOL_LIST
2208 "
2209
2210 for n in $COMPONENT_LIST; do
2211     v=$(toupper ${n%s})_LIST
2212     eval enable \$$v
2213     eval ${n}_if_any="\$$v"
2214 done
2215
2216 enable $ARCH_EXT_LIST
2217
2218 die_unknown(){
2219     echo "Unknown option \"$1\"."
2220     echo "See $0 --help for available options."
2221     exit 1
2222 }
2223
2224 print_3_columns() {
2225     cat | tr ' ' '\n' | sort | pr -r -3 -t
2226 }
2227
2228 show_list() {
2229     suffix=_$1
2230     shift
2231     echo $* | sed s/$suffix//g | print_3_columns
2232     exit 0
2233 }
2234
2235 rand_list(){
2236     IFS=', '
2237     set -- $*
2238     unset IFS
2239     for thing; do
2240         comp=${thing%:*}
2241         prob=${thing#$comp}
2242         prob=${prob#:}
2243         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2244         echo "prob ${prob:-0.5}"
2245         printf '%s\n' $comp
2246     done
2247 }
2248
2249 do_random(){
2250     action=$1
2251     shift
2252     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2253     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2254 }
2255
2256 for opt do
2257     optval="${opt#*=}"
2258     case "$opt" in
2259         --extra-ldflags=*)
2260             add_ldflags $optval
2261         ;;
2262         --extra-libs=*)
2263             add_extralibs $optval
2264         ;;
2265         --disable-devices)
2266             disable $INDEV_LIST $OUTDEV_LIST
2267         ;;
2268         --enable-debug=*)
2269             debuglevel="$optval"
2270         ;;
2271         --disable-programs)
2272             disable $PROGRAM_LIST
2273         ;;
2274         --disable-everything)
2275             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2276         ;;
2277         --disable-all)
2278             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2279             disable $LIBRARY_LIST $PROGRAM_LIST doc
2280         ;;
2281         --enable-random|--disable-random)
2282             action=${opt%%-random}
2283             do_random ${action#--} $COMPONENT_LIST
2284         ;;
2285         --enable-random=*|--disable-random=*)
2286             action=${opt%%-random=*}
2287             do_random ${action#--} $optval
2288         ;;
2289         --enable-*=*|--disable-*=*)
2290             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2291             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2292             eval list=\$$(toupper $thing)_LIST
2293             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2294             $action $(filter "$name" $list)
2295         ;;
2296         --enable-?*|--disable-?*)
2297             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2298             if is_in $option $COMPONENT_LIST; then
2299                 test $action = disable && action=unset
2300                 eval $action \$$(toupper ${option%s})_LIST
2301             elif is_in $option $CMDLINE_SELECT; then
2302                 $action $option
2303             else
2304                 die_unknown $opt
2305             fi
2306         ;;
2307         --list-*)
2308             NAME="${opt#--list-}"
2309             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2310             NAME=${NAME%s}
2311             eval show_list $NAME \$$(toupper $NAME)_LIST
2312         ;;
2313         --help|-h) show_help
2314         ;;
2315         *)
2316             optname="${opt%%=*}"
2317             optname="${optname#--}"
2318             optname=$(echo "$optname" | sed 's/-/_/g')
2319             if is_in $optname $CMDLINE_SET; then
2320                 eval $optname='$optval'
2321             elif is_in $optname $CMDLINE_APPEND; then
2322                 append $optname "$optval"
2323             else
2324                 die_unknown $opt
2325             fi
2326         ;;
2327     esac
2328 done
2329
2330 disabled logging && logfile=/dev/null
2331
2332 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2333 set >> $logfile
2334
2335 test -n "$cross_prefix" && enable cross_compile
2336
2337 if enabled cross_compile; then
2338     test -n "$arch" && test -n "$target_os" ||
2339         die "Must specify target arch and OS when cross-compiling"
2340 fi
2341
2342 ar_default="${cross_prefix}${ar_default}"
2343 cc_default="${cross_prefix}${cc_default}"
2344 nm_default="${cross_prefix}${nm_default}"
2345 pkg_config_default="${cross_prefix}${pkg_config_default}"
2346 ranlib="${cross_prefix}${ranlib}"
2347 strip="${cross_prefix}${strip}"
2348
2349 sysinclude_default="${sysroot}/usr/include"
2350
2351 case "$toolchain" in
2352     clang-asan)
2353         cc_default="clang"
2354         add_cflags  -fsanitize=address
2355         add_ldflags -fsanitize=address
2356     ;;
2357     clang-tsan)
2358         cc_default="clang"
2359         add_cflags  -fsanitize=thread -pie
2360         add_ldflags -fsanitize=thread -pie
2361     ;;
2362     clang-usan)
2363         cc_default="clang"
2364         add_cflags  -fsanitize=undefined
2365         add_ldflags -fsanitize=undefined
2366     ;;
2367     gcc-asan)
2368         cc_default="gcc"
2369         add_cflags  -fsanitize=address
2370         add_ldflags -fsanitize=address
2371     ;;
2372     gcc-tsan)
2373         cc_default="gcc"
2374         add_cflags  -fsanitize=thread -pie -fPIC
2375         add_ldflags -fsanitize=thread -pie -fPIC
2376     ;;
2377     gcc-usan)
2378         cc_default="gcc"
2379         add_cflags  -fsanitize=undefined
2380         add_ldflags -fsanitize=undefined
2381     ;;
2382     valgrind-massif)
2383         target_exec_default="valgrind"
2384         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2385     ;;
2386     valgrind-memcheck)
2387         target_exec_default="valgrind"
2388         target_exec_args="--track-origins=yes --leak-check=full"
2389     ;;
2390     msvc)
2391         # Check whether the current MSVC version needs the C99 converter.
2392         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2393         # support enough of C99 to build libav. Default to the new
2394         # behaviour if the regexp was unable to match anything, since this
2395         # successfully parses the version number of existing supported
2396         # versions that require the converter (MSVC 2010 and 2012).
2397         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2398         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2399             cc_default="cl"
2400         else
2401             cc_default="c99wrap cl"
2402         fi
2403         ld_default="link"
2404         nm_default="dumpbin -symbols"
2405         ar_default="lib"
2406         target_os_default="win32"
2407         # Use a relative path for TMPDIR. This makes sure all the
2408         # ffconf temp files are written with a relative path, avoiding
2409         # issues with msys/win32 path conversion for MSVC parameters
2410         # such as -Fo<file> or -out:<file>.
2411         TMPDIR=.
2412     ;;
2413     icl)
2414         cc_default="icl"
2415         ld_default="xilink"
2416         nm_default="dumpbin -symbols"
2417         ar_default="xilib"
2418         target_os_default="win32"
2419         TMPDIR=.
2420     ;;
2421     gcov)
2422         add_cflags  -fprofile-arcs -ftest-coverage
2423         add_ldflags -fprofile-arcs -ftest-coverage
2424     ;;
2425     hardened)
2426         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2427         add_ldflags -Wl,-z,relro -Wl,-z,now
2428     ;;
2429     ?*)
2430         die "Unknown toolchain $toolchain"
2431     ;;
2432 esac
2433
2434 set_default arch cc pkg_config sysinclude target_exec target_os
2435 enabled cross_compile || host_cc_default=$cc
2436 set_default host_cc
2437
2438 if ! $pkg_config --version >/dev/null 2>&1; then
2439     warn "$pkg_config not found, library detection may fail."
2440     pkg_config=false
2441 fi
2442
2443 exesuf() {
2444     case $1 in
2445         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2446     esac
2447 }
2448
2449 EXESUF=$(exesuf $target_os)
2450 HOSTEXESUF=$(exesuf $host_os)
2451
2452 # set temporary file name
2453 : ${TMPDIR:=$TEMPDIR}
2454 : ${TMPDIR:=$TMP}
2455 : ${TMPDIR:=/tmp}
2456
2457 if ! check_cmd mktemp -u XXXXXX; then
2458     # simple replacement for missing mktemp
2459     # NOT SAFE FOR GENERAL USE
2460     mktemp(){
2461         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2462     }
2463 fi
2464
2465 tmpfile(){
2466     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2467         (set -C; exec > $tmp) 2>/dev/null ||
2468         die "Unable to create temporary file in $TMPDIR."
2469     append TMPFILES $tmp
2470     eval $1=$tmp
2471 }
2472
2473 trap 'rm -f -- $TMPFILES' EXIT
2474
2475 tmpfile TMPASM .asm
2476 tmpfile TMPC   .c
2477 tmpfile TMPE   $EXESUF
2478 tmpfile TMPH   .h
2479 tmpfile TMPO   .o
2480 tmpfile TMPS   .S
2481 tmpfile TMPSH  .sh
2482 tmpfile TMPV   .ver
2483
2484 unset -f mktemp
2485
2486 chmod +x $TMPE
2487
2488 # make sure we can execute files in $TMPDIR
2489 cat > $TMPSH 2>> $logfile <<EOF
2490 #! /bin/sh
2491 EOF
2492 chmod +x $TMPSH >> $logfile 2>&1
2493 if ! $TMPSH >> $logfile 2>&1; then
2494     cat <<EOF
2495 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2496 variable to another directory and make sure that it is not mounted noexec.
2497 EOF
2498     die "Sanity test failed."
2499 fi
2500
2501 ccc_flags(){
2502     for flag; do
2503         case $flag in
2504             -std=c99)           echo -c99                       ;;
2505             -mcpu=*)            echo -arch ${flag#*=}           ;;
2506             -mieee)             echo -ieee                      ;;
2507             -O*|-fast)          echo $flag                      ;;
2508             -fno-math-errno)    echo -assume nomath_errno       ;;
2509             -g)                 echo -g3                        ;;
2510             -Wall)              echo -msg_enable level2         ;;
2511             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2512             -Wl,*)              echo $flag                      ;;
2513             -f*|-W*)                                            ;;
2514             *)                  echo $flag                      ;;
2515         esac
2516    done
2517 }
2518
2519 cparser_flags(){
2520     for flag; do
2521         case $flag in
2522             -Wno-switch)             echo -Wno-switch-enum ;;
2523             -Wno-format-zero-length) ;;
2524             -Wdisabled-optimization) ;;
2525             -Wno-pointer-sign)       echo -Wno-other ;;
2526             *)                       echo $flag ;;
2527         esac
2528     done
2529 }
2530
2531 msvc_common_flags(){
2532     for flag; do
2533         case $flag in
2534             # In addition to specifying certain flags under the compiler
2535             # specific filters, they must be specified here as well or else the
2536             # generic catch all at the bottom will print the original flag.
2537             -Wall)                ;;
2538             -std=c99)             ;;
2539             # Common flags
2540             -fomit-frame-pointer) ;;
2541             -g)                   echo -Z7 ;;
2542             -fno-math-errno)      ;;
2543             -fno-common)          ;;
2544             -fno-signed-zeros)    ;;
2545             -fPIC)                ;;
2546             -mthumb)              ;;
2547             -march=*)             ;;
2548             -lz)                  echo zlib.lib ;;
2549             -lavifil32)           echo vfw32.lib ;;
2550             -lavicap32)           echo vfw32.lib user32.lib ;;
2551             -l*)                  echo ${flag#-l}.lib ;;
2552             *)                    echo $flag ;;
2553         esac
2554     done
2555 }
2556
2557 msvc_flags(){
2558     msvc_common_flags "$@"
2559     for flag; do
2560         case $flag in
2561             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2562                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2563                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2564                                        -wd4273 ;;
2565         esac
2566     done
2567 }
2568
2569 icl_flags(){
2570     msvc_common_flags "$@"
2571     for flag; do
2572         case $flag in
2573             # Despite what Intel's documentation says -Wall, which is supported
2574             # on Windows, does enable remarks so disable them here.
2575             -Wall)                echo $flag -Qdiag-disable:remark ;;
2576             -std=c99)             echo -Qstd=c99 ;;
2577         esac
2578     done
2579 }
2580
2581 pgi_flags(){
2582     for flag; do
2583         case $flag in
2584             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2585             -fomit-frame-pointer) echo -Mnoframe ;;
2586             -g)                   echo -gopt ;;
2587             *)                    echo $flag ;;
2588         esac
2589     done
2590 }
2591
2592 suncc_flags(){
2593     for flag; do
2594         case $flag in
2595             -march=*|-mcpu=*)
2596                 case "${flag#*=}" in
2597                     native)                   echo -xtarget=native       ;;
2598                     v9|niagara)               echo -xarch=sparc          ;;
2599                     ultrasparc)               echo -xarch=sparcvis       ;;
2600                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2601                     i586|pentium)             echo -xchip=pentium        ;;
2602                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2603                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2604                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2605                     pentium4*)          echo -xtarget=pentium4           ;;
2606                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2607                     *-sse3)             echo -xarch=sse3                 ;;
2608                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2609                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2610                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2611                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2612                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2613                     k8|opteron|athlon64|athlon-fx)
2614                                                echo -xarch=sse2a         ;;
2615                     athlon*)                   echo -xarch=pentium_proa  ;;
2616                 esac
2617                 ;;
2618             -std=c99)             echo -xc99              ;;
2619             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2620             -fPIC)                echo -KPIC -xcode=pic32 ;;
2621             -W*,*)                echo $flag              ;;
2622             -f*-*|-W*|-mimpure-text)                      ;;
2623             -shared)              echo -G                 ;;
2624             *)                    echo $flag              ;;
2625         esac
2626     done
2627 }
2628
2629 tms470_flags(){
2630     for flag; do
2631         case $flag in
2632             -march=*|-mcpu=*)
2633                 case "${flag#*=}" in
2634                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2635                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2636                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2637                     armv6*|arm11*)          echo -mv=6   ;;
2638                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2639                                             echo -mv=5e  ;;
2640                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2641                 esac
2642                 ;;
2643             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2644             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2645             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2646             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2647             -msoft-float)   echo --float_support=vfplib       ;;
2648             -O[0-3]|-mf=*)  echo $flag                        ;;
2649             -g)             echo -g -mn                       ;;
2650             -pds=*)         echo $flag                        ;;
2651             -D*|-I*)        echo $flag                        ;;
2652             --gcc|--abi=*)  echo $flag                        ;;
2653             -me)            echo $flag                        ;;
2654         esac
2655     done
2656 }
2657
2658 probe_cc(){
2659     pfx=$1
2660     _cc=$2
2661
2662     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2663     unset _ld_o _ldflags _ld_lib _ld_path
2664     unset _depflags _DEPCMD _DEPFLAGS
2665     _flags_filter=echo
2666
2667     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2668         _type=llvm_gcc
2669         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2670         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2671         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2672         _cflags_speed='-O3'
2673         _cflags_size='-Os'
2674     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2675         _type=gcc
2676         gcc_version=$($_cc --version | head -n1)
2677         gcc_basever=$($_cc -dumpversion)
2678         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2679         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2680         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2681         if ! $_cc -dumpversion | grep -q '^2\.'; then
2682             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2683         fi
2684         _cflags_speed='-O3'
2685         _cflags_size='-Os'
2686     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2687         _type=icc
2688         _ident=$($_cc --version | head -n1)
2689         _depflags='-MMD'
2690         _cflags_speed='-O3'
2691         _cflags_size='-Os'
2692         _cflags_noopt='-O1'
2693     elif $_cc -v 2>&1 | grep -q xlc; then
2694         _type=xlc
2695         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2696         _cflags_speed='-O5'
2697         _cflags_size='-O5 -qcompact'
2698     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2699         _type=ccc
2700         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2701         _DEPFLAGS='-M'
2702         _cflags_speed='-fast'
2703         _cflags_size='-O1'
2704         _flags_filter=ccc_flags
2705     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2706         test -d "$sysroot" || die "No valid sysroot specified."
2707         _type=armcc
2708         _ident=$($_cc --vsn | head -n1)
2709         armcc_conf="$PWD/armcc.conf"
2710         $_cc --arm_linux_configure                 \
2711              --arm_linux_config_file="$armcc_conf" \
2712              --configure_sysroot="$sysroot"        \
2713              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2714              die "Error creating armcc configuration file."
2715         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2716         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2717         as_default="${cross_prefix}gcc"
2718         _depflags='-MMD'
2719         _cflags_speed='-O3'
2720         _cflags_size='-Os'
2721     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2722         _type=tms470
2723         _ident=$($_cc -version | head -n1 | tr -s ' ')
2724         _flags='--gcc --abi=eabi -me'
2725         _cc_e='-ppl -fe=$@'
2726         _cc_o='-fe=$@'
2727         _depflags='-ppa -ppd=$(@:.o=.d)'
2728         _cflags_speed='-O3 -mf=5'
2729         _cflags_size='-O3 -mf=2'
2730         _flags_filter=tms470_flags
2731     elif $_cc -v 2>&1 | grep -q clang; then
2732         _type=clang
2733         _ident=$($_cc --version | head -n1)
2734         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2735         _cflags_speed='-O3'
2736         _cflags_size='-Os'
2737     elif $_cc -V 2>&1 | grep -q Sun; then
2738         _type=suncc
2739         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2740         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2741         _DEPFLAGS='-xM1 -xc99'
2742         _ldflags='-std=c99'
2743         _cflags_speed='-O5'
2744         _cflags_size='-O5 -xspace'
2745         _flags_filter=suncc_flags
2746     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2747         _type=pathscale
2748         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2749         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2750         _cflags_speed='-O2'
2751         _cflags_size='-Os'
2752         _flags_filter='filter_out -Wdisabled-optimization'
2753     elif $_cc -v 2>&1 | grep -q Open64; then
2754         _type=open64
2755         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2756         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2757         _cflags_speed='-O2'
2758         _cflags_size='-Os'
2759         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2760     elif $_cc -V 2>&1 | grep -q Portland; then
2761         _type=pgi
2762         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2763         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2764         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2765         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2766         _cflags_noopt="-O1"
2767         _flags_filter=pgi_flags
2768     elif $_cc 2>&1 | grep -q Microsoft; then
2769         _type=msvc
2770         _ident=$($cc 2>&1 | head -n1)
2771         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2772         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2773         _cflags_speed="-O2"
2774         _cflags_size="-O1"
2775         if $_cc 2>&1 | grep -q Linker; then
2776             _ld_o='-out:$@'
2777         else
2778             _ld_o='-Fe$@'
2779         fi
2780         _cc_o='-Fo$@'
2781         _cc_e='-P -Fi$@'
2782         _flags_filter=msvc_flags
2783         _ld_lib='lib%.a'
2784         _ld_path='-libpath:'
2785         _flags='-nologo'
2786         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2787         if [ $pfx = hostcc ]; then
2788             append _cflags -Dsnprintf=_snprintf
2789         fi
2790     elif $_cc 2>&1 | grep -q Intel; then
2791         _type=icl
2792         _ident=$($cc 2>&1 | head -n1)
2793         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2794         # Not only is O3 broken on 13.x+ but it is slower on all previous
2795         # versions (tested) as well.
2796         _cflags_speed="-O2"
2797         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2798         if $_cc 2>&1 | grep -q Linker; then
2799             _ld_o='-out:$@'
2800         else
2801             _ld_o='-Fe$@'
2802         fi
2803         _cc_o='-Fo$@'
2804         _cc_e='-P'
2805         _flags_filter=icl_flags
2806         _ld_lib='lib%.a'
2807         _ld_path='-libpath:'
2808         # -Qdiag-error to make icl error when seeing certain unknown arguments
2809         _flags='-nologo -Qdiag-error:4044,10157'
2810         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2811         # with MSVC which enables it by default.
2812         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2813         if [ $pfx = hostcc ]; then
2814             append _cflags -Dsnprintf=_snprintf
2815         fi
2816     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2817         _type=cparser
2818         _ident=$($_cc --version | head -n1)
2819         _depflags='-MMD'
2820         _cflags_speed='-O4'
2821         _cflags_size='-O2'
2822         _flags_filter=cparser_flags
2823     fi
2824
2825     eval ${pfx}_type=\$_type
2826     eval ${pfx}_ident=\$_ident
2827 }
2828
2829 set_ccvars(){
2830     eval ${1}_C=\${_cc_c-\${${1}_C}}
2831     eval ${1}_E=\${_cc_e-\${${1}_E}}
2832     eval ${1}_O=\${_cc_o-\${${1}_O}}
2833
2834     if [ -n "$_depflags" ]; then
2835         eval ${1}_DEPFLAGS=\$_depflags
2836     else
2837         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2838         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2839         eval DEP${1}FLAGS=\$_flags
2840     fi
2841 }
2842
2843 probe_cc cc "$cc"
2844 cflags_filter=$_flags_filter
2845 cflags_speed=$_cflags_speed
2846 cflags_size=$_cflags_size
2847 cflags_noopt=$_cflags_noopt
2848 add_cflags $_flags $_cflags
2849 cc_ldflags=$_ldflags
2850 set_ccvars CC
2851
2852 probe_cc hostcc "$host_cc"
2853 host_cflags_filter=$_flags_filter
2854 add_host_cflags  $_flags $_cflags
2855 set_ccvars HOSTCC
2856
2857 test -n "$cc_type" && enable $cc_type ||
2858     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2859
2860 : ${as_default:=$cc}
2861 : ${dep_cc_default:=$cc}
2862 : ${ld_default:=$cc}
2863 : ${host_ld_default:=$host_cc}
2864 set_default ar as dep_cc ld host_ld
2865
2866 probe_cc as "$as"
2867 asflags_filter=$_flags_filter
2868 add_asflags $_flags $_cflags
2869 set_ccvars AS
2870
2871 probe_cc ld "$ld"
2872 ldflags_filter=$_flags_filter
2873 add_ldflags $_flags $_ldflags
2874 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2875 LD_O=${_ld_o-$LD_O}
2876 LD_LIB=${_ld_lib-$LD_LIB}
2877 LD_PATH=${_ld_path-$LD_PATH}
2878
2879 probe_cc hostld "$host_ld"
2880 host_ldflags_filter=$_flags_filter
2881 add_host_ldflags $_flags $_ldflags
2882 HOSTLD_O=${_ld_o-$HOSTLD_O}
2883
2884 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2885     probe_cc depcc "$dep_cc"
2886     CCDEP=${_DEPCMD:-$DEPCMD}
2887     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2888     DEPCCFLAGS=$_flags
2889 fi
2890
2891 if $ar 2>&1 | grep -q Microsoft; then
2892     arflags="-nologo"
2893     ar_o='-out:$@'
2894 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2895     arflags="rq"
2896     ar_o='$@'
2897 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2898     arflags='-Xany -r -c'
2899     ar_o='$@'
2900 else
2901     arflags="rc"
2902     ar_o='$@'
2903 fi
2904
2905 add_cflags $extra_cflags
2906 add_asflags $extra_cflags
2907
2908 if test -n "$sysroot"; then
2909     case "$cc_type" in
2910         gcc|llvm_gcc|clang)
2911             add_cppflags --sysroot="$sysroot"
2912             add_ldflags --sysroot="$sysroot"
2913         ;;
2914         tms470)
2915             add_cppflags -I"$sysinclude"
2916             add_ldflags  --sysroot="$sysroot"
2917         ;;
2918     esac
2919 fi
2920
2921 if test "$cpu" = host; then
2922     enabled cross_compile &&
2923         die "--cpu=host makes no sense when cross-compiling."
2924
2925     case "$cc_type" in
2926         gcc|llvm_gcc)
2927             check_native(){
2928                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2929                 sed -n "/cc1.*$1=/{
2930                             s/.*$1=\\([^ ]*\\).*/\\1/
2931                             p
2932                             q
2933                         }" $TMPE
2934             }
2935             cpu=$(check_native -march || check_native -mcpu)
2936         ;;
2937     esac
2938
2939     test "${cpu:-host}" = host &&
2940         die "--cpu=host not supported with compiler $cc"
2941 fi
2942
2943 # Deal with common $arch aliases
2944 case "$arch" in
2945     aarch64|arm64)
2946         arch="aarch64"
2947     ;;
2948     arm*)
2949         arch="arm"
2950     ;;
2951     mips*|IP*)
2952         arch="mips"
2953     ;;
2954     parisc*|hppa*)
2955         arch="parisc"
2956     ;;
2957     "Power Macintosh"|ppc*|powerpc*)
2958         arch="ppc"
2959     ;;
2960     s390|s390x)
2961         arch="s390"
2962     ;;
2963     sh4|sh)
2964         arch="sh4"
2965     ;;
2966     sun4u|sparc*)
2967         arch="sparc"
2968     ;;
2969     tilegx|tile-gx)
2970         arch="tilegx"
2971     ;;
2972     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2973         arch="x86"
2974     ;;
2975 esac
2976
2977 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2978 enable $arch
2979
2980 # Add processor-specific flags
2981 if enabled aarch64; then
2982
2983     case $cpu in
2984         armv*)
2985             cpuflags="-march=$cpu"
2986         ;;
2987         *)
2988             cpuflags="-mcpu=$cpu"
2989         ;;
2990     esac
2991
2992 elif enabled alpha; then
2993
2994     cpuflags="-mcpu=$cpu"
2995
2996 elif enabled arm; then
2997
2998     check_arm_arch() {
2999         check_cpp_condition stddef.h \
3000             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3001             $cpuflags
3002     }
3003
3004     probe_arm_arch() {
3005         if   check_arm_arch 4;        then echo armv4;
3006         elif check_arm_arch 4T;       then echo armv4t;
3007         elif check_arm_arch 5;        then echo armv5;
3008         elif check_arm_arch 5E;       then echo armv5e;
3009         elif check_arm_arch 5T;       then echo armv5t;
3010         elif check_arm_arch 5TE;      then echo armv5te;
3011         elif check_arm_arch 5TEJ;     then echo armv5te;
3012         elif check_arm_arch 6;        then echo armv6;
3013         elif check_arm_arch 6J;       then echo armv6j;
3014         elif check_arm_arch 6K;       then echo armv6k;
3015         elif check_arm_arch 6Z;       then echo armv6z;
3016         elif check_arm_arch 6ZK;      then echo armv6zk;
3017         elif check_arm_arch 6T2;      then echo armv6t2;
3018         elif check_arm_arch 7;        then echo armv7;
3019         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3020         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3021         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3022         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3023         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3024         fi
3025     }
3026
3027     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3028
3029     case $cpu in
3030         armv*)
3031             cpuflags="-march=$cpu"
3032             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3033         ;;
3034         *)
3035             cpuflags="-mcpu=$cpu"
3036             case $cpu in
3037                 cortex-a*)                               subarch=armv7a  ;;
3038                 cortex-r*)                               subarch=armv7r  ;;
3039                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3040                 arm11*)                                  subarch=armv6   ;;
3041                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3042                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3043                 *)                             subarch=$(probe_arm_arch) ;;
3044             esac
3045         ;;
3046     esac
3047
3048     case "$subarch" in
3049         armv5t*)    enable fast_clz                ;;
3050         armv[6-8]*) enable fast_clz fast_unaligned ;;
3051     esac
3052
3053 elif enabled avr32; then
3054
3055     case $cpu in
3056         ap7[02]0[0-2])
3057             subarch="avr32_ap"
3058             cpuflags="-mpart=$cpu"
3059         ;;
3060         ap)
3061             subarch="avr32_ap"
3062             cpuflags="-march=$cpu"
3063         ;;
3064         uc3[ab]*)
3065             subarch="avr32_uc"
3066             cpuflags="-mcpu=$cpu"
3067         ;;
3068         uc)
3069             subarch="avr32_uc"
3070             cpuflags="-march=$cpu"
3071         ;;
3072     esac
3073
3074 elif enabled bfin; then
3075
3076     cpuflags="-mcpu=$cpu"
3077
3078 elif enabled mips; then
3079
3080     cpuflags="-march=$cpu"
3081
3082 elif enabled ppc; then
3083
3084     case $(tolower $cpu) in
3085         601|ppc601|powerpc601)
3086             cpuflags="-mcpu=601"
3087             disable altivec
3088         ;;
3089         603*|ppc603*|powerpc603*)
3090             cpuflags="-mcpu=603"
3091             disable altivec
3092         ;;
3093         604*|ppc604*|powerpc604*)
3094             cpuflags="-mcpu=604"
3095             disable altivec
3096         ;;
3097         g3|75*|ppc75*|powerpc75*)
3098             cpuflags="-mcpu=750"
3099             disable altivec
3100         ;;
3101         g4|745*|ppc745*|powerpc745*)
3102             cpuflags="-mcpu=7450"
3103         ;;
3104         74*|ppc74*|powerpc74*)
3105             cpuflags="-mcpu=7400"
3106         ;;
3107         g5|970|ppc970|powerpc970)
3108             cpuflags="-mcpu=970"
3109         ;;
3110         power[3-7]*)
3111             cpuflags="-mcpu=$cpu"
3112         ;;
3113         cell)
3114             cpuflags="-mcpu=cell"
3115             enable ldbrx
3116         ;;
3117         e500mc)
3118             cpuflags="-mcpu=e500mc"
3119             disable altivec
3120         ;;
3121         e500v2)
3122             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3123             disable altivec
3124         ;;
3125         e500)
3126             cpuflags="-mcpu=8540 -mhard-float"
3127             disable altivec
3128         ;;
3129     esac
3130
3131 elif enabled sparc; then
3132
3133     case $cpu in
3134         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3135             cpuflags="-mcpu=$cpu"
3136             disable vis
3137         ;;
3138         ultrasparc*|niagara[234])
3139             cpuflags="-mcpu=$cpu"
3140         ;;
3141     esac
3142
3143 elif enabled x86; then
3144
3145     case $cpu in
3146         i[345]86|pentium)
3147             cpuflags="-march=$cpu"
3148             disable mmx
3149         ;;
3150         # targets that do NOT support nopl and conditional mov (cmov)
3151         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3152             cpuflags="-march=$cpu"
3153             disable i686
3154         ;;
3155         # targets that do support nopl and conditional mov (cmov)
3156         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3157             cpuflags="-march=$cpu"
3158             enable i686
3159             enable fast_cmov
3160         ;;
3161         # targets that do support conditional mov but on which it's slow
3162         pentium4|pentium4m|prescott|nocona)
3163             cpuflags="-march=$cpu"
3164             enable i686
3165             disable fast_cmov
3166         ;;
3167     esac
3168
3169 fi
3170
3171 if [ "$cpu" != generic ]; then
3172     add_cflags  $cpuflags
3173     add_asflags $cpuflags
3174 fi
3175
3176 # compiler sanity check
3177 check_exec <<EOF
3178 int main(void){ return 0; }
3179 EOF
3180 if test "$?" != 0; then
3181     echo "$cc is unable to create an executable file."
3182     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3183         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3184         echo "Only do this if you know what cross compiling means."
3185     fi
3186     die "C compiler test failed."
3187 fi
3188
3189 add_cppflags -D_ISOC99_SOURCE
3190 check_cflags -std=c99
3191 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3192 #include <stdlib.h>
3193 EOF
3194 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3195 #include <stdlib.h>
3196 EOF
3197
3198 add_host_cppflags -D_ISOC99_SOURCE
3199 check_host_cflags -std=c99
3200 check_host_cflags -Wall
3201 check_host_cflags -O3
3202
3203 check_64bit(){
3204     arch32=$1
3205     arch64=$2
3206     expr=$3
3207     check_code cc "" "int test[2*($expr) - 1]" &&
3208         subarch=$arch64 || subarch=$arch32
3209 }
3210
3211 case "$arch" in
3212     aarch64|alpha|ia64)
3213         spic=$shared
3214     ;;
3215     mips)
3216         check_64bit mips mips64 '_MIPS_SIM > 1'
3217         spic=$shared
3218     ;;
3219     parisc)
3220         check_64bit parisc parisc64 'sizeof(void *) > 4'
3221         spic=$shared
3222     ;;
3223     ppc)
3224         check_64bit ppc ppc64 'sizeof(void *) > 4'
3225         spic=$shared
3226     ;;
3227     s390)
3228         check_64bit s390 s390x 'sizeof(void *) > 4'
3229         spic=$shared
3230     ;;
3231     sparc)
3232         check_64bit sparc sparc64 'sizeof(void *) > 4'
3233         spic=$shared
3234     ;;
3235     x86)
3236         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3237         if test "$subarch" = "x86_64"; then
3238             spic=$shared
3239         fi
3240     ;;
3241 esac
3242
3243 enable $subarch
3244 enabled spic && enable_weak pic
3245
3246 # OS specific
3247 case $target_os in
3248     aix)
3249         SHFLAGS=-shared
3250         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3251         enabled shared && add_ldflags -Wl,-brtl
3252         ;;
3253     haiku)
3254         prefix_default="/boot/common"
3255         network_extralibs="-lnetwork"
3256         host_libs=
3257         ;;
3258     sunos)
3259         SHFLAGS='-shared -Wl,-h,$$(@F)'
3260         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3261         network_extralibs="-lsocket -lnsl"
3262         # When using suncc to build, the Solaris linker will mark
3263         # an executable with each instruction set encountered by
3264         # the Solaris assembler.  As our libraries contain their own
3265         # guards for processor-specific code, instead suppress
3266         # generation of the HWCAPS ELF section on Solaris x86 only.
3267         enabled_all suncc x86 &&
3268             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3269             add_ldflags -Wl,-M,mapfile
3270         nm_default='nm -P -g'
3271         ;;
3272     netbsd)
3273         disable symver
3274         oss_indev_extralibs="-lossaudio"
3275         oss_outdev_extralibs="-lossaudio"
3276         ;;
3277     openbsd|bitrig)
3278         disable symver
3279         SHFLAGS='-shared'
3280         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3281         SLIB_INSTALL_LINKS=
3282         oss_indev_extralibs="-lossaudio"
3283         oss_outdev_extralibs="-lossaudio"
3284         ;;
3285     dragonfly)
3286         disable symver
3287         ;;
3288     freebsd)
3289         ;;
3290     bsd/os)
3291         add_extralibs -lpoll -lgnugetopt
3292         ;;
3293     darwin)
3294         gas="gas-preprocessor.pl $cc"
3295         enabled ppc && add_asflags -force_cpusubtype_ALL
3296         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3297         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3298         add_ldflags -Wl,-dynamic,-search_paths_first
3299         SLIBSUF=".dylib"
3300         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3301         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3302         objformat="macho"
3303         enabled x86_64 && objformat="macho64"
3304         enabled_any pic shared ||
3305             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3306         ;;
3307     mingw32*)
3308         if test $target_os = "mingw32ce"; then
3309             disable network
3310         else
3311             target_os=mingw32
3312         fi
3313         LIBTARGET=i386
3314         if enabled x86_64; then
3315             LIBTARGET="i386:x86-64"
3316         elif enabled arm; then
3317             LIBTARGET=arm-wince
3318         fi
3319         check_ldflags -Wl,--nxcompat
3320         check_ldflags -Wl,--dynamicbase
3321         shlibdir_default="$bindir_default"
3322         SLIBPREF=""
3323         SLIBSUF=".dll"
3324         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3325         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3326         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3327         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3328         SLIB_INSTALL_LINKS=
3329         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3330         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3331         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3332         objformat="win32"
3333         dlltool="${cross_prefix}dlltool"
3334         ranlib=:
3335         enable dos_paths
3336         ;;
3337     win32|win64)
3338         disable symver
3339         if enabled shared; then
3340             # Link to the import library instead of the normal static library
3341             # for shared libs.
3342             LD_LIB='%.lib'
3343             # Cannot build both shared and static libs with MSVC or icl.
3344             disable static
3345         fi
3346         shlibdir_default="$bindir_default"
3347         SLIBPREF=""
3348         SLIBSUF=".dll"
3349         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3350         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3351         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3352         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3353         SLIB_INSTALL_LINKS=
3354         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3355         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3356         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3357         objformat="win32"
3358         ranlib=:
3359         enable dos_paths
3360         ;;
3361     cygwin*)
3362         target_os=cygwin
3363         shlibdir_default="$bindir_default"
3364         SLIBPREF="cyg"
3365         SLIBSUF=".dll"
3366         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3367         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3368         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3369         SLIB_INSTALL_LINKS=
3370         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3371         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3372         objformat="win32"
3373         enable dos_paths
3374         ;;
3375     *-dos|freedos|opendos)
3376         network_extralibs="-lsocket"
3377         objformat="coff"
3378         enable dos_paths
3379         add_cppflags -U__STRICT_ANSI__
3380         ;;
3381     linux)
3382         enable dv1394
3383         ;;
3384     irix*)
3385         target_os=irix
3386         ranlib="echo ignoring ranlib"
3387         ;;
3388     os/2*)
3389         ln_s="cp -f"
3390         objformat="aout"
3391         add_cppflags -D_GNU_SOURCE
3392         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3393         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3394         LIBSUF="_s.a"
3395         SLIBPREF=""
3396         SLIBSUF=".dll"
3397         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3398         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3399         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3400             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3401             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3402             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3403             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3404             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3405         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3406             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3407         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3408         enable dos_paths
3409         ;;
3410     gnu/kfreebsd)
3411         add_cppflags -D_BSD_SOURCE
3412         ;;
3413     gnu)
3414         ;;
3415     qnx)
3416         add_cppflags -D_QNX_SOURCE
3417         network_extralibs="-lsocket"
3418         ;;
3419     symbian)
3420         SLIBSUF=".dll"
3421         enable dos_paths
3422         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3423         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3424         add_ldflags -Wl,--target1-abs,--no-undefined \
3425                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3426                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3427         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3428                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3429                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3430         ;;
3431     osf1)
3432         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3433         ;;
3434     minix)
3435         ;;
3436     plan9)
3437         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3438                      -D_REENTRANT_SOURCE        \
3439                      -D_RESEARCH_SOURCE         \
3440                      -DFD_SETSIZE=96            \
3441                      -DHAVE_SOCK_OPTS
3442         add_compat strtod.o strtod=avpriv_strtod
3443         network_extralibs='-lbsd'
3444         exeobjs=compat/plan9/main.o
3445         disable avserver
3446         cp_f='cp'
3447         ;;
3448     none)
3449         ;;
3450     *)
3451         die "Unknown OS '$target_os'."
3452         ;;
3453 esac
3454
3455 # determine libc flavour
3456
3457 probe_libc(){
3458     pfx=$1
3459     pfx_no_=${pfx%_}
3460     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3461     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3462         eval ${pfx}libc_type=uclibc
3463         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3464     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3465         eval ${pfx}libc_type=glibc
3466         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3467     # MinGW headers can be installed on Cygwin, so check for newlib first.
3468     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3469         eval ${pfx}libc_type=newlib
3470         add_${pfx}cppflags -U__STRICT_ANSI__
3471     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3472     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3473         eval ${pfx}libc_type=mingw64
3474         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3475         eval test \$${pfx_no_}cc_type = "gcc" &&
3476             add_${pfx}cppflags -D__printf__=__gnu_printf__
3477     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3478          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3479         eval ${pfx}libc_type=mingw32
3480         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3481             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3482             die "ERROR: MinGW32 runtime version must be >= 3.15."
3483         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3484         eval test \$${pfx_no_}cc_type = "gcc" &&
3485             add_${pfx}cppflags -D__printf__=__gnu_printf__
3486     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3487         eval ${pfx}libc_type=msvcrt
3488         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3489         # 0x601 by default unless something else is set by the user.
3490         # This can easily lead to us detecting functions only present
3491         # in such new versions and producing binaries requiring windows 7.0.
3492         # Therefore explicitly set the default to XP unless the user has
3493         # set something else on the command line.
3494         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3495             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3496     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3497         eval ${pfx}libc_type=klibc
3498     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3499         eval ${pfx}libc_type=bionic
3500     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3501         eval ${pfx}libc_type=solaris
3502         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3503     fi
3504 }
3505
3506 probe_libc
3507 test -n "$libc_type" && enable libc_$libc_type
3508 probe_libc host_
3509 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3510
3511 case $libc_type in
3512     bionic)
3513         add_compat strtod.o strtod=avpriv_strtod
3514         ;;
3515     msvcrt)
3516         add_compat strtod.o strtod=avpriv_strtod
3517         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3518                                      _snprintf=avpriv_snprintf  \
3519                                      vsnprintf=avpriv_vsnprintf
3520         ;;
3521 esac
3522
3523 # hacks for compiler/libc/os combinations
3524
3525 if enabled_all tms470 libc_glibc; then
3526     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3527     add_cppflags -D__USER_LABEL_PREFIX__=
3528     add_cppflags -D__builtin_memset=memset
3529     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3530     add_cflags   -pds=48    # incompatible redefinition of macro
3531 fi
3532
3533 if enabled_all ccc libc_glibc; then
3534     add_ldflags -Wl,-z,now  # calls to libots crash without this
3535 fi
3536
3537 esc(){
3538     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3539 }
3540
3541 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3542
3543 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3544
3545 set_default $PATHS_LIST
3546 set_default nm
3547
3548 # we need to build at least one lib type
3549 if ! enabled_any static shared; then
3550     cat <<EOF
3551 At least one library type must be built.
3552 Specify --enable-static to build the static libraries or --enable-shared to
3553 build the shared libraries as well. To only build the shared libraries specify
3554 --disable-static in addition to --enable-shared.
3555 EOF
3556     exit 1;
3557 fi
3558
3559 die_license_disabled() {
3560     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3561 }
3562
3563 die_license_disabled gpl libcdio
3564 die_license_disabled gpl libx264
3565 die_license_disabled gpl libx265
3566 die_license_disabled gpl libxavs
3567 die_license_disabled gpl libxvid
3568 die_license_disabled gpl x11grab
3569
3570 die_license_disabled nonfree libfaac
3571 die_license_disabled nonfree libfdk_aac
3572 die_license_disabled nonfree openssl
3573
3574 die_license_disabled version3 libopencore_amrnb
3575 die_license_disabled version3 libopencore_amrwb
3576 die_license_disabled version3 libvo_aacenc
3577 die_license_disabled version3 libvo_amrwbenc
3578
3579 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3580
3581 disabled optimizations || check_cflags -fomit-frame-pointer
3582
3583 enable_weak_pic() {
3584     disabled pic && return
3585     enable pic
3586     add_cppflags -DPIC
3587     case "$target_os" in
3588     mingw*|cygwin*)
3589         ;;
3590     *)
3591         add_cflags -fPIC
3592         ;;
3593     esac
3594     add_asflags  -fPIC
3595 }
3596
3597 enabled pic && enable_weak_pic
3598
3599 check_cc <<EOF || die "Symbol mangling check failed."
3600 int ff_extern;
3601 EOF
3602 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3603 extern_prefix=${sym%%ff_extern*}
3604
3605 check_cc <<EOF && enable_weak inline_asm
3606 void foo(void) { __asm__ volatile ("" ::); }
3607 EOF
3608
3609 _restrict=
3610 for restrict_keyword in restrict __restrict__ __restrict; do
3611     check_cc <<EOF && _restrict=$restrict_keyword && break
3612 void foo(char * $restrict_keyword p);
3613 EOF
3614 done
3615
3616 check_cc <<EOF && enable pragma_deprecated
3617 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3618 EOF
3619
3620 check_cc <<EOF && enable attribute_packed
3621 struct { int x; } __attribute__((packed)) x;
3622 EOF
3623
3624 check_cc <<EOF && enable attribute_may_alias
3625 union { int x; } __attribute__((may_alias)) x;
3626 EOF
3627
3628 check_cc <<EOF || die "endian test failed"
3629 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3630 EOF
3631 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3632
3633 check_inline_asm inline_asm_labels '"1:\n"'
3634
3635 if enabled aarch64; then
3636     # internal assembler in clang 3.3 does not support this instruction
3637     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3638     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3639
3640     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3641
3642 elif enabled alpha; then
3643
3644     check_cflags -mieee
3645
3646 elif enabled arm; then
3647
3648     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3649     enabled thumb && check_cflags -mthumb || check_cflags -marm
3650     nogas=die
3651
3652     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3653         enable vfp_args
3654     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3655         case "${cross_prefix:-$cc}" in
3656             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3657             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3658 __asm__ (".eabi_attribute 28, 1");
3659 int main(void) { return 0; }
3660 EOF
3661         esac
3662         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3663     fi
3664
3665     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3666     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3667     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3668     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3669     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3670     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3671
3672     [ $target_os = linux ] ||
3673         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3674             $ARCH_EXT_LIST_ARM
3675
3676     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3677
3678     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3679
3680 elif enabled mips; then
3681
3682     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3683
3684 elif enabled parisc; then
3685
3686     if enabled gcc; then
3687         case $($cc -dumpversion) in
3688             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3689         esac
3690     fi
3691
3692 elif enabled ppc; then
3693
3694     enable local_aligned_8 local_aligned_16
3695
3696     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3697     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3698     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3699     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3700
3701     # AltiVec flags: The FSF version of GCC differs from the Apple version
3702     if enabled altivec; then
3703         nogas=warn
3704         check_cflags -maltivec -mabi=altivec &&
3705         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3706         check_cflags -faltivec
3707
3708         # check if our compiler supports Motorola AltiVec C API
3709         check_cc <<EOF || disable altivec
3710 $inc_altivec_h
3711 int main(void) {
3712     vector signed int v1 = (vector signed int) { 0 };
3713     vector signed int v2 = (vector signed int) { 1 };
3714     v1 = vec_add(v1, v2);
3715     return 0;
3716 }
3717 EOF
3718
3719         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3720     fi
3721
3722 elif enabled sparc; then
3723
3724     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3725
3726 elif enabled x86; then
3727
3728     check_builtin rdtsc    intrin.h   "__rdtsc()"
3729     check_builtin mm_empty mmintrin.h "_mm_empty()"
3730
3731     enable local_aligned_8 local_aligned_16
3732
3733     # check whether EBP is available on x86
3734     # As 'i' is stored on the stack, this program will crash
3735     # if the base pointer is used to access it because the
3736     # base pointer is cleared in the inline assembly code.
3737     check_exec_crash <<EOF && enable ebp_available
3738 volatile int i=0;
3739 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3740 return i;
3741 EOF
3742
3743     # check whether EBX is available on x86
3744     check_inline_asm ebx_available '""::"b"(0)' &&
3745         check_inline_asm ebx_available '"":::"%ebx"'
3746
3747     # check whether xmm clobbers are supported
3748     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3749
3750     # check whether binutils is new enough to compile SSSE3/MMXEXT
3751     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3752     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3753
3754     if ! disabled_any asm mmx yasm; then
3755         if check_cmd $yasmexe --version; then
3756             enabled x86_64 && yasm_extra="-m amd64"
3757             yasm_debug="-g dwarf2"
3758         elif check_cmd nasm -v; then
3759             yasmexe=nasm
3760             yasm_debug="-g -F dwarf"
3761             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3762         fi
3763
3764         YASMFLAGS="-f $objformat $yasm_extra"
3765         enabled pic               && append YASMFLAGS "-DPIC"
3766         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3767         case "$objformat" in
3768             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3769         esac
3770
3771         check_yasm "movbe ecx, [5]" && enable yasm ||
3772             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3773         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3774         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3775         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3776         check_yasm "CPU amdnop" || disable cpunop
3777     fi
3778
3779     case "$cpu" in
3780         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3781             disable fast_clz
3782         ;;
3783     esac
3784
3785 fi
3786
3787 if enabled asm; then
3788     as=${gas:=$as}
3789     check_as <<EOF && enable gnu_as || \
3790         $nogas "GNU assembler not found, install gas-preprocessor"
3791 .macro m n
3792 \n: .int 0
3793 .endm
3794 m x
3795 EOF
3796 fi
3797
3798 check_ldflags -Wl,--as-needed
3799
3800 if check_func dlopen; then
3801     ldl=
3802 elif check_func dlopen -ldl; then
3803     ldl=-ldl
3804 fi
3805
3806 if ! disabled network; then
3807     check_type "sys/types.h sys/socket.h" socklen_t
3808     check_type netdb.h "struct addrinfo"
3809     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3810     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3811     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3812     check_type netinet/in.h "struct sockaddr_in6"
3813     check_type poll.h "struct pollfd"
3814     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3815     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3816     check_type netinet/sctp.h "struct sctp_event_subscribe"
3817     check_func getaddrinfo $network_extralibs
3818     check_func getservbyport $network_extralibs
3819     check_func inet_aton $network_extralibs
3820     # Prefer arpa/inet.h over winsock2
3821     if check_header arpa/inet.h ; then
3822         check_func closesocket
3823     elif check_header winsock2.h ; then
3824         check_func_headers winsock2.h closesocket -lws2 &&
3825             network_extralibs="-lws2" ||
3826         { check_func_headers winsock2.h closesocket -lws2_32 &&
3827             network_extralibs="-lws2_32"; } || disable winsock2_h network
3828         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3829         check_type ws2tcpip.h socklen_t
3830         check_type ws2tcpip.h "struct addrinfo"
3831         check_type ws2tcpip.h "struct group_source_req"
3832         check_type ws2tcpip.h "struct ip_mreq_source"
3833         check_type ws2tcpip.h "struct ipv6_mreq"
3834         check_type winsock2.h "struct pollfd"
3835         check_type ws2tcpip.h "struct sockaddr_in6"
3836         check_type ws2tcpip.h "struct sockaddr_storage"
3837         check_struct winsock2.h "struct sockaddr" sa_len
3838     else
3839         disable network
3840     fi
3841 fi
3842
3843 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3844 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3845
3846 check_func  fcntl
3847 check_func  fork
3848 check_func_headers stdlib.h getenv
3849 check_func  gethrtime
3850 check_func  getopt
3851 check_func  getrusage
3852 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3853 check_func  gettimeofday
3854 check_func  isatty
3855 check_func  localtime_r
3856 check_func  ${malloc_prefix}memalign            && enable memalign
3857 check_func  mkstemp
3858 check_func  mmap
3859 check_func  mprotect
3860 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3861 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3862 check_func  setrlimit
3863 check_func  strerror_r
3864 check_func  strptime
3865 check_func  sched_getaffinity
3866 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3867 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3868 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3869 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3870 check_func  sysconf
3871 check_func  sysctl
3872 check_func  usleep
3873 check_func_headers io.h setmode
3874 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3875 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3876 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3877 check_func_headers windows.h GetProcessAffinityMask
3878 check_func_headers windows.h GetProcessTimes
3879 check_func_headers windows.h GetSystemTimeAsFileTime
3880 check_func_headers windows.h MapViewOfFile
3881 check_func_headers windows.h SetConsoleTextAttribute
3882 check_func_headers windows.h Sleep
3883 check_func_headers windows.h VirtualAlloc
3884
3885 check_header direct.h
3886 check_header dlfcn.h
3887 check_header dxva.h
3888 check_header dxva2api.h
3889 check_header io.h
3890 check_header malloc.h
3891 check_header poll.h
3892 check_header sys/mman.h
3893 check_header sys/param.h
3894 check_header sys/resource.h
3895 check_header sys/select.h
3896 check_header sys/time.h
3897 check_header sys/un.h
3898 check_header unistd.h
3899 check_header vdpau/vdpau.h
3900 check_header vdpau/vdpau_x11.h
3901 check_header VideoDecodeAcceleration/VDADecoder.h
3902 check_header windows.h
3903 check_header X11/extensions/XvMClib.h
3904
3905 if ! disabled w32threads && ! enabled pthreads; then
3906     check_func_headers "windows.h process.h" _beginthreadex &&
3907         enable w32threads || disable w32threads
3908 fi
3909
3910 # check for some common methods of building with pthread support
3911 # do this before the optional library checks as some of them require pthreads
3912 if ! disabled pthreads && ! enabled w32threads; then
3913     enable pthreads
3914     if check_func pthread_join -pthread; then
3915         add_cflags -pthread
3916         add_extralibs -pthread
3917     elif check_func pthread_join -pthreads; then
3918         add_cflags -pthreads
3919         add_extralibs -pthreads
3920     elif check_func pthread_join -lpthreadGC2; then
3921         add_extralibs -lpthreadGC2
3922     elif check_lib pthread.h pthread_join -lpthread; then
3923         :
3924     elif ! check_func pthread_join; then
3925         disable pthreads
3926     fi
3927 fi
3928
3929 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3930 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3931
3932 check_lib math.h sin -lm && LIBM="-lm"
3933 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3934
3935 atan2f_args=2
3936 ldexpf_args=2
3937 powf_args=2
3938
3939 for func in $MATH_FUNCS; do
3940     eval check_mathfunc $func \${${func}_args:-1}
3941 done
3942
3943 # these are off by default, so fail if requested and not available
3944 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
3945                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
3946                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
3947 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3948 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3949 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3950 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3951 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
3952 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3953                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3954                                done || die "ERROR: libgsm not found"; }
3955 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3956 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3957 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3958 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3959 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3960 enabled libopenjpeg       && require_pkg_config libopenjpeg openjpeg.h opj_version
3961 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3962 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3963 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3964 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3965 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3966 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3967 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3968 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3969 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3970 enabled libvpx            && {
3971     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3972                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3973     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3974                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3975     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3976     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3977 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3978 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
3979 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3980                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3981                                die "ERROR: libx264 version must be >= 0.118."; }
3982 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
3983                              { check_cpp_condition x265.h "X265_BUILD >= 9" ||
3984                                die "ERROR: libx265 version must be >= 9."; }
3985 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3986 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3987 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3988                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3989                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3990                                die "ERROR: openssl not found"; }
3991
3992 if enabled gnutls; then
3993     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3994     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3995 fi
3996
3997 # libdc1394 check
3998 if enabled libdc1394; then
3999     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4000         enable libdc1394_2; } ||
4001     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4002         enable libdc1394_1; } ||
4003     die "ERROR: No version of libdc1394 found "
4004 fi
4005
4006 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4007     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4008     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4009     enable sdl
4010 fi
4011
4012 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4013 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4014
4015 check_header linux/fb.h
4016 check_header linux/videodev2.h
4017 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4018
4019 check_header sys/videoio.h
4020
4021 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4022 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4023 # w32api 3.12 had it defined wrong
4024 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4025
4026 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4027 { check_header dev/bktr/ioctl_meteor.h &&
4028   check_header dev/bktr/ioctl_bt848.h; } ||
4029 { check_header machine/ioctl_meteor.h &&
4030   check_header machine/ioctl_bt848.h; } ||
4031 { check_header dev/video/meteor/ioctl_meteor.h &&
4032   check_header dev/video/bktr/ioctl_bt848.h; } ||
4033 check_header dev/ic/bt8xx.h
4034
4035 check_header sndio.h
4036 check_header sys/soundcard.h
4037 check_header soundcard.h
4038
4039 enabled_any alsa_indev alsa_outdev &&
4040     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4041
4042 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4043     check_func jack_port_get_latency_range -ljack
4044
4045 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4046
4047 if enabled libcdio; then
4048     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4049     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4050 fi
4051
4052 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4053
4054 enabled x11grab                                           &&
4055 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4056 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4057 { enabled xlib || die "ERROR: Xlib not found"; }
4058
4059 enabled vdpau &&
4060     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4061     disable vdpau
4062
4063 enabled vdpau && enabled xlib &&
4064     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4065     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4066     enable vdpau_x11
4067
4068 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4069
4070 # add some useful compiler flags if supported
4071 check_cflags -Wdeclaration-after-statement
4072 check_cflags -Wall
4073 check_cflags -Wdisabled-optimization
4074 check_cflags -Wpointer-arith
4075 check_cflags -Wredundant-decls
4076 check_cflags -Wcast-qual
4077 check_cflags -Wwrite-strings
4078 check_cflags -Wtype-limits
4079 check_cflags -Wundef
4080 check_cflags -Wmissing-prototypes
4081 check_cflags -Wstrict-prototypes
4082 enabled extra_warnings && check_cflags -Winline
4083
4084 check_disable_warning(){
4085     warning_flag=-W${1#-Wno-}
4086     test_cflags $warning_flag && add_cflags $1
4087 }
4088
4089 check_disable_warning -Wno-parentheses
4090 check_disable_warning -Wno-switch
4091 check_disable_warning -Wno-format-zero-length
4092 check_disable_warning -Wno-pointer-sign
4093
4094 # add some linker flags
4095 check_ldflags -Wl,--warn-common
4096 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4097 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4098
4099 # add some strip flags
4100 # -wN '..@*' is more selective than -x, but not available everywhere.
4101 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4102
4103 enabled neon_clobber_test &&
4104     check_ldflags -Wl,--wrap,avcodec_open2              \
4105                   -Wl,--wrap,avcodec_decode_audio4      \
4106                   -Wl,--wrap,avcodec_decode_video2      \
4107                   -Wl,--wrap,avcodec_decode_subtitle2   \
4108                   -Wl,--wrap,avcodec_encode_audio2      \
4109                   -Wl,--wrap,avcodec_encode_video2      \
4110                   -Wl,--wrap,avcodec_encode_subtitle    \
4111                   -Wl,--wrap,avresample_convert ||
4112     disable neon_clobber_test
4113
4114 enabled xmm_clobber_test &&
4115     check_ldflags -Wl,--wrap,avcodec_open2              \
4116                   -Wl,--wrap,avcodec_decode_audio4      \
4117                   -Wl,--wrap,avcodec_decode_video2      \
4118                   -Wl,--wrap,avcodec_decode_subtitle2   \
4119                   -Wl,--wrap,avcodec_encode_audio2      \
4120                   -Wl,--wrap,avcodec_encode_video2      \
4121                   -Wl,--wrap,avcodec_encode_subtitle    \
4122                   -Wl,--wrap,avresample_convert         \
4123                   -Wl,--wrap,sws_scale ||
4124     disable xmm_clobber_test
4125
4126 echo "X{};" > $TMPV
4127 if test_ldflags -Wl,--version-script,$TMPV; then
4128     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4129     check_cc <<EOF && enable symver_asm_label
4130 void ff_foo(void) __asm__ ("av_foo@VERSION");
4131 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4132 EOF
4133     check_cc <<EOF && enable symver_gnu_asm
4134 __asm__(".symver ff_foo,av_foo@VERSION");
4135 void ff_foo(void) {}
4136 EOF
4137 fi
4138
4139 if [ -z "$optflags" ]; then
4140     if enabled small; then
4141         optflags=$cflags_size
4142     elif enabled optimizations; then
4143         optflags=$cflags_speed
4144     else
4145         optflags=$cflags_noopt
4146     fi
4147 fi
4148
4149 check_optflags(){
4150     check_cflags "$@"
4151     enabled lto && check_ldflags "$@"
4152 }
4153
4154
4155 if enabled lto; then
4156     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4157     check_cflags  -flto
4158     check_ldflags -flto $cpuflags
4159 fi
4160
4161 check_optflags $optflags
4162 check_optflags -fno-math-errno
4163 check_optflags -fno-signed-zeros
4164
4165 if enabled icc; then
4166     # Just warnings, no remarks
4167     check_cflags -w1
4168     # -wd: Disable following warnings
4169     # 144, 167, 556: -Wno-pointer-sign
4170     # 1292: attribute "foo" ignored
4171     # 1419: external declaration in primary source file
4172     # 10006: ignoring unknown option -fno-signed-zeros
4173     # 10148: ignoring unknown option -Wno-parentheses
4174     # 10156: ignoring option '-W'; no argument required
4175     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4176     # 11030: Warning unknown option --as-needed
4177     # 10156: ignoring option '-export'; no argument required
4178     check_ldflags -wd10156,11030
4179     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4180     enable ebp_available
4181     if enabled x86_32; then
4182         icc_version=$($cc -dumpversion)
4183         test ${icc_version%%.*} -ge 11 &&
4184             check_cflags -falign-stack=maintain-16-byte ||
4185             disable aligned_stack
4186     fi
4187 elif enabled ccc; then
4188     # disable some annoying warnings
4189     add_cflags -msg_disable bitnotint
4190     add_cflags -msg_disable mixfuncvoid
4191     add_cflags -msg_disable nonstandcast
4192     add_cflags -msg_disable unsupieee
4193 elif enabled gcc; then
4194     check_optflags -fno-tree-vectorize
4195     check_cflags -Werror=implicit-function-declaration
4196     check_cflags -Werror=missing-prototypes
4197     check_cflags -Werror=return-type
4198     check_cflags -Werror=declaration-after-statement
4199     check_cflags -Werror=vla
4200     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4201 elif enabled llvm_gcc; then
4202     check_cflags -mllvm -stack-alignment=16
4203 elif enabled clang; then
4204     check_cflags -mllvm -stack-alignment=16
4205     check_cflags -Qunused-arguments
4206     check_cflags -Werror=implicit-function-declaration
4207     check_cflags -Werror=missing-prototypes
4208     check_cflags -Werror=return-type
4209 elif enabled cparser; then
4210     add_cflags -Wno-missing-variable-declarations
4211     add_cflags -Wno-empty-statement
4212 elif enabled armcc; then
4213     # 2523: use of inline assembler is deprecated
4214     add_cflags -W${armcc_opt},--diag_suppress=2523
4215     add_cflags -W${armcc_opt},--diag_suppress=1207
4216     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4217     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4218     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4219     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4220 elif enabled tms470; then
4221     add_cflags -pds=824 -pds=837
4222     disable inline_asm
4223 elif enabled pathscale; then
4224     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4225 elif enabled_any msvc icl; then
4226     enabled x86_32 && disable aligned_stack
4227     enabled_all x86_32 debug && add_cflags -Oy-
4228     enabled debug && add_ldflags -debug
4229     enable pragma_deprecated
4230     if enabled icl; then
4231         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4232         # (correctly) on icl 13.x.
4233         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4234             add_cflags -Qansi-alias
4235         # icl will pass the inline asm tests but inline asm is currently
4236         # not supported (build will fail)
4237         disable inline_asm
4238     fi
4239 fi
4240
4241 case $as_type in
4242     clang)
4243         add_asflags -Qunused-arguments
4244     ;;
4245 esac
4246
4247 case $ld_type in
4248     clang)
4249         check_ldflags -Qunused-arguments
4250     ;;
4251 esac
4252
4253 case $target_os in
4254     osf1)
4255         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4256     ;;
4257     plan9)
4258         add_cppflags -Dmain=plan9_main
4259     ;;
4260 esac
4261
4262 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4263
4264 check_deps $CONFIG_LIST       \
4265            $CONFIG_EXTRA      \
4266            $HAVE_LIST         \
4267            $ALL_COMPONENTS    \
4268
4269 ! enabled_any memalign posix_memalign aligned_malloc &&
4270     enabled_any $need_memalign && enable memalign_hack
4271
4272 for thread in $THREADS_LIST; do
4273     if enabled $thread; then
4274         test -n "$thread_type" &&
4275             die "ERROR: Only one thread type must be selected." ||
4276             thread_type="$thread"
4277     fi
4278 done
4279
4280 echo "install prefix            $prefix"
4281 echo "source path               $source_path"
4282 echo "C compiler                $cc"
4283 echo "C library                 $libc_type"
4284 if test "$host_cc" != "$cc"; then
4285     echo "host C compiler           $host_cc"
4286     echo "host C library            $host_libc_type"
4287 fi
4288 echo "ARCH                      $arch ($cpu)"
4289 if test "$build_suffix" != ""; then
4290     echo "build suffix              $build_suffix"
4291 fi
4292 if test "$extra_version" != ""; then
4293     echo "version string suffix     $extra_version"
4294 fi
4295 echo "big-endian                ${bigendian-no}"
4296 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4297 if enabled x86; then
4298     echo "${yasmexe}                      ${yasm-no}"
4299     echo "MMX enabled               ${mmx-no}"
4300     echo "MMXEXT enabled            ${mmxext-no}"
4301     echo "3DNow! enabled            ${amd3dnow-no}"
4302     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4303     echo "SSE enabled               ${sse-no}"
4304     echo "SSSE3 enabled             ${ssse3-no}"
4305     echo "AVX enabled               ${avx-no}"
4306     echo "XOP enabled               ${xop-no}"
4307     echo "FMA3 enabled              ${fma3-no}"
4308     echo "FMA4 enabled              ${fma4-no}"
4309     echo "i686 features enabled     ${i686-no}"
4310     echo "CMOV is fast              ${fast_cmov-no}"
4311     echo "EBX available             ${ebx_available-no}"
4312     echo "EBP available             ${ebp_available-no}"
4313 fi
4314 if enabled aarch64; then
4315     echo "NEON enabled              ${neon-no}"
4316     echo "VFP enabled               ${vfp-no}"
4317 fi
4318 if enabled arm; then
4319     echo "ARMv5TE enabled           ${armv5te-no}"
4320     echo "ARMv6 enabled             ${armv6-no}"
4321     echo "ARMv6T2 enabled           ${armv6t2-no}"
4322     echo "VFP enabled               ${vfp-no}"
4323     echo "NEON enabled              ${neon-no}"
4324 fi
4325 if enabled ppc; then
4326     echo "AltiVec enabled           ${altivec-no}"
4327     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4328     echo "dcbzl available           ${dcbzl-no}"
4329 fi
4330 if enabled sparc; then
4331     echo "VIS enabled               ${vis-no}"
4332 fi
4333 echo "debug symbols             ${debug-no}"
4334 echo "optimize for size         ${small-no}"
4335 echo "optimizations             ${optimizations-no}"
4336 echo "static                    ${static-no}"
4337 echo "shared                    ${shared-no}"
4338 echo "new filter support        ${avfilter-no}"
4339 echo "network support           ${network-no}"
4340 echo "threading support         ${thread_type-no}"
4341 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4342 echo "SDL support               ${sdl-no}"
4343 test -n "$random_seed" &&
4344     echo "random seed               ${random_seed}"
4345 echo
4346
4347 echo "External libraries:"
4348 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4349 echo
4350
4351 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4352     echo "Enabled ${type}s:"
4353     eval list=\$$(toupper $type)_LIST
4354     print_enabled '_*' $list | print_3_columns
4355     echo
4356 done
4357
4358 license="LGPL version 2.1 or later"
4359 if enabled nonfree; then
4360     license="nonfree and unredistributable"
4361 elif enabled gplv3; then
4362     license="GPL version 3 or later"
4363 elif enabled lgplv3; then
4364     license="LGPL version 3 or later"
4365 elif enabled gpl; then
4366     license="GPL version 2 or later"
4367 fi
4368
4369 echo "License: $license"
4370
4371 echo "Creating config.mak and config.h..."
4372
4373 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4374
4375 config_files="$TMPH config.mak"
4376
4377 cat > config.mak <<EOF
4378 # Automatically generated by configure - do not modify!
4379 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4380 prefix=$prefix
4381 LIBDIR=\$(DESTDIR)$libdir
4382 SHLIBDIR=\$(DESTDIR)$shlibdir
4383 INCDIR=\$(DESTDIR)$incdir
4384 BINDIR=\$(DESTDIR)$bindir
4385 DATADIR=\$(DESTDIR)$datadir
4386 DOCDIR=\$(DESTDIR)$docdir
4387 MANDIR=\$(DESTDIR)$mandir
4388 SRC_PATH=$source_path
4389 CC_IDENT=$cc_ident
4390 ARCH=$arch
4391 CC=$cc
4392 AS=$as
4393 LD=$ld
4394 DEPCC=$dep_cc
4395 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4396 DEPAS=$as
4397 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4398 YASM=$yasmexe
4399 DEPYASM=$yasmexe
4400 AR=$ar
4401 ARFLAGS=$arflags
4402 AR_O=$ar_o
4403 RANLIB=$ranlib
4404 STRIP=$strip
4405 LN_S=$ln_s
4406 CPPFLAGS=$CPPFLAGS
4407 CFLAGS=$CFLAGS
4408 ASFLAGS=$ASFLAGS
4409 AS_C=$AS_C
4410 AS_O=$AS_O
4411 CC_C=$CC_C
4412 CC_E=$CC_E
4413 CC_O=$CC_O
4414 LD_O=$LD_O
4415 LD_LIB=$LD_LIB
4416 LD_PATH=$LD_PATH
4417 DLLTOOL=$dlltool
4418 LDFLAGS=$LDFLAGS
4419 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4420 STRIPFLAGS=$STRIPFLAGS
4421 YASMFLAGS=$YASMFLAGS
4422 BUILDSUF=$build_suffix
4423 FULLNAME=$FULLNAME
4424 LIBPREF=$LIBPREF
4425 LIBSUF=$LIBSUF
4426 LIBNAME=$LIBNAME
4427 SLIBPREF=$SLIBPREF
4428 SLIBSUF=$SLIBSUF
4429 EXESUF=$EXESUF
4430 EXTRA_VERSION=$extra_version
4431 CCDEP=$CCDEP
4432 CCDEP_FLAGS=$CCDEP_FLAGS
4433 ASDEP=$ASDEP
4434 ASDEP_FLAGS=$ASDEP_FLAGS
4435 CC_DEPFLAGS=$CC_DEPFLAGS
4436 AS_DEPFLAGS=$AS_DEPFLAGS
4437 HOSTCC=$host_cc
4438 HOSTLD=$host_ld
4439 HOSTCFLAGS=$host_cflags
4440 HOSTCPPFLAGS=$host_cppflags
4441 HOSTEXESUF=$HOSTEXESUF
4442 HOSTLDFLAGS=$host_ldflags
4443 HOSTLIBS=$host_libs
4444 DEPHOSTCC=$host_cc
4445 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4446 HOSTCCDEP=$HOSTCCDEP
4447 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4448 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4449 HOSTCC_C=$HOSTCC_C
4450 HOSTCC_O=$HOSTCC_O
4451 HOSTLD_O=$HOSTLD_O
4452 TARGET_EXEC=$target_exec $target_exec_args
4453 TARGET_PATH=$target_path
4454 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4455 CFLAGS-avplay=$sdl_cflags
4456 ZLIB=$($ldflags_filter -lz)
4457 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4458 EXTRALIBS=$extralibs
4459 COMPAT_OBJS=$compat_objs
4460 EXEOBJS=$exeobjs
4461 INSTALL=install
4462 LIBTARGET=${LIBTARGET}
4463 SLIBNAME=${SLIBNAME}
4464 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4465 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4466 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4467 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4468 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4469 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4470 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4471 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4472 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4473 EOF
4474
4475 get_version(){
4476     lcname=lib${1}
4477     name=$(toupper $lcname)
4478     file=$source_path/$lcname/version.h
4479     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4480     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4481     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4482     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4483     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4484 }
4485
4486 map 'get_version $v' $LIBRARY_LIST
4487
4488 print_program_libs(){
4489     eval "program_libs=\$${1}_libs"
4490     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4491 }
4492
4493 map 'print_program_libs $v' $PROGRAM_LIST
4494
4495 cat > $TMPH <<EOF
4496 /* Automatically generated by configure - do not modify! */
4497 #ifndef LIBAV_CONFIG_H
4498 #define LIBAV_CONFIG_H
4499 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4500 #define LIBAV_LICENSE "$(c_escape $license)"
4501 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4502 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4503 #define restrict $_restrict
4504 #define EXTERN_PREFIX "${extern_prefix}"
4505 #define EXTERN_ASM ${extern_prefix}
4506 #define SLIBSUF "$SLIBSUF"
4507 EOF
4508
4509 test -n "$malloc_prefix" &&
4510     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4511
4512 if enabled yasm; then
4513     append config_files $TMPASM
4514     printf '' >$TMPASM
4515 fi
4516
4517 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4518
4519 print_config ARCH_   "$config_files" $ARCH_LIST
4520 print_config HAVE_   "$config_files" $HAVE_LIST
4521 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4522                                      $CONFIG_EXTRA      \
4523                                      $ALL_COMPONENTS    \
4524
4525 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4526
4527 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4528 cp_if_changed $TMPH config.h
4529 touch .config
4530
4531 enabled yasm && cp_if_changed $TMPASM config.asm
4532
4533 cat > $TMPH <<EOF
4534 /* Generated by ffconf */
4535 #ifndef AVUTIL_AVCONFIG_H
4536 #define AVUTIL_AVCONFIG_H
4537 EOF
4538
4539 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4540
4541 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4542
4543 cp_if_changed $TMPH libavutil/avconfig.h
4544
4545 test -n "$WARNINGS" && printf "\n$WARNINGS"
4546
4547 # build pkg-config files
4548
4549 pkgconfig_generate(){
4550     name=$1
4551     shortname=${name#lib}${build_suffix}
4552     comment=$2
4553     version=$3
4554     libs=$4
4555     requires=$5
4556     enabled ${name#lib} || return 0
4557     mkdir -p $name
4558     cat <<EOF > $name/$name.pc
4559 prefix=$prefix
4560 exec_prefix=\${prefix}
4561 libdir=$libdir
4562 includedir=$incdir
4563
4564 Name: $name
4565 Description: $comment
4566 Version: $version
4567 Requires: $(enabled shared || echo $requires)
4568 Requires.private: $(enabled shared && echo $requires)
4569 Conflicts:
4570 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4571 Libs.private: $(enabled shared && echo $libs)
4572 Cflags: -I\${includedir}
4573 EOF
4574     cat <<EOF > $name/$name-uninstalled.pc
4575 prefix=
4576 exec_prefix=
4577 libdir=\${pcfiledir}
4578 includedir=${source_path}
4579
4580 Name: $name
4581 Description: $comment
4582 Version: $version
4583 Requires: $requires
4584 Conflicts:
4585 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4586 Cflags: -I\${includedir}
4587 EOF
4588 }
4589
4590 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4591 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4592 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4593 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4594
4595 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4596 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4597 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4598 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4599 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4600 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4601 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"