819d14b939b4ce2aad59316e05d92b342dad46a5
[libav.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg 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 FFMPEG, 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 FFmpeg."
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 show_help(){
58 cat <<EOF
59 Usage: configure [options]
60 Options: [defaults in brackets after descriptions]
61
62 Standard options:
63 --help print this message
64 --logfile=FILE log tests and output to FILE [config.err]
65 --disable-logging do not log configure debug information
66 --prefix=PREFIX install in PREFIX [$prefix]
67 --bindir=DIR install binaries in DIR [PREFIX/bin]
68 --datadir=DIR install data files in DIR [PREFIX/share/ffmpeg]
69 --libdir=DIR install libs in DIR [PREFIX/lib]
70 --shlibdir=DIR install shared libs in DIR [PREFIX/lib]
71 --incdir=DIR install includes in DIR [PREFIX/include]
72 --mandir=DIR install man page in DIR [PREFIX/share/man]
73
74 Configuration options:
75 --disable-static do not build static libraries [no]
76 --enable-shared build shared libraries [no]
77 --enable-gpl allow use of GPL code, the resulting libs
78 and binaries will be under GPL [no]
79 --enable-version3 upgrade (L)GPL to version 3 [no]
80 --enable-nonfree allow use of nonfree code, the resulting libs
81 and binaries will be unredistributable [no]
82 --disable-doc do not build documentation
83 --disable-ffmpeg disable ffmpeg build
84 --disable-ffplay disable ffplay build
85 --disable-ffprobe disable ffprobe build
86 --disable-ffserver disable ffserver build
87 --disable-avdevice disable libavdevice build
88 --disable-avcodec disable libavcodec build
89 --disable-avformat disable libavformat build
90 --disable-swscale disable libswscale build
91 --enable-postproc enable GPLed postprocessing support [no]
92 --enable-avfilter video filter support [no]
93 --enable-avfilter-lavf video filters dependent on avformat [no]
94 --enable-beosthreads use BeOS threads [no]
95 --enable-os2threads use OS/2 threads [no]
96 --enable-pthreads use pthreads [no]
97 --enable-w32threads use Win32 threads [no]
98 --enable-x11grab enable X11 grabbing [no]
99 --disable-network disable network support [no]
100 --disable-mpegaudio-hp faster (but less accurate) MPEG audio decoding [no]
101 --enable-gray enable full grayscale support (slower color)
102 --disable-swscale-alpha disable alpha channel support in swscale
103 --disable-fastdiv disable table-based division
104 --enable-small optimize for size instead of speed
105 --disable-aandct disable AAN DCT code
106 --disable-dct disable DCT code
107 --disable-fft disable FFT code
108 --disable-golomb disable Golomb code
109 --disable-lpc disable LPC code
110 --disable-mdct disable MDCT code
111 --disable-rdft disable RDFT code
112 --disable-vaapi disable VAAPI code
113 --disable-vdpau disable VDPAU code
114 --disable-dxva2 disable DXVA2 code
115 --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
116 --enable-hardcoded-tables use hardcoded tables instead of runtime generation
117 --enable-memalign-hack emulate memalign, interferes with memory debuggers
118 --enable-beos-netserver enable BeOS netserver
119 --disable-everything disable all components listed below
120 --disable-encoder=NAME disable encoder NAME
121 --enable-encoder=NAME enable encoder NAME
122 --disable-encoders disable all encoders
123 --disable-decoder=NAME disable decoder NAME
124 --enable-decoder=NAME enable decoder NAME
125 --disable-decoders disable all decoders
126 --disable-hwaccel=NAME disable hwaccel NAME
127 --enable-hwaccel=NAME enable hwaccel NAME
128 --disable-hwaccels disable all hwaccels
129 --disable-muxer=NAME disable muxer NAME
130 --enable-muxer=NAME enable muxer NAME
131 --disable-muxers disable all muxers
132 --disable-demuxer=NAME disable demuxer NAME
133 --enable-demuxer=NAME enable demuxer NAME
134 --disable-demuxers disable all demuxers
135 --enable-parser=NAME enable parser NAME
136 --disable-parser=NAME disable parser NAME
137 --disable-parsers disable all parsers
138 --enable-bsf=NAME enable bitstream filter NAME
139 --disable-bsf=NAME disable bitstream filter NAME
140 --disable-bsfs disable all bitstream filters
141 --enable-protocol=NAME enable protocol NAME
142 --disable-protocol=NAME disable protocol NAME
143 --disable-protocols disable all protocols
144 --disable-indev=NAME disable input device NAME
145 --disable-outdev=NAME disable output device NAME
146 --disable-indevs disable input devices
147 --disable-outdevs disable output devices
148 --disable-devices disable all devices
149 --enable-filter=NAME enable filter NAME
150 --disable-filter=NAME disable filter NAME
151 --disable-filters disable all filters
152 --list-decoders show all available decoders
153 --list-encoders show all available encoders
154 --list-hwaccels show all available hardware accelerators
155 --list-muxers show all available muxers
156 --list-demuxers show all available demuxers
157 --list-parsers show all available parsers
158 --list-protocols show all available protocols
159 --list-bsfs show all available bitstream filters
160 --list-indevs show all available input devices
161 --list-outdevs show all available output devices
162 --list-filters show all available filters
163
164 External library support:
165 --enable-avisynth enable reading of AVISynth script files [no]
166 --enable-bzlib enable bzlib [autodetect]
167 --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
168 --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
169 --enable-libdc1394 enable IIDC-1394 grabbing using libdc1394
170 and libraw1394 [no]
171 --enable-libdirac enable Dirac support via libdirac [no]
172 --enable-libfaac enable FAAC support via libfaac [no]
173 --enable-libfaad enable FAAD support via libfaad [no]
174 --enable-libfaadbin open libfaad.so.0 at runtime [no]
175 --enable-libgsm enable GSM support via libgsm [no]
176 --enable-libmp3lame enable MP3 encoding via libmp3lame [no]
177 --enable-libnut enable NUT (de)muxing via libnut,
178 native (de)muxer exists [no]
179 --enable-libopenjpeg enable JPEG 2000 decoding via OpenJPEG [no]
180 --enable-librtmp enable RTMP[E] support via librtmp [no]
181 --enable-libschroedinger enable Dirac support via libschroedinger [no]
182 --enable-libspeex enable Speex decoding via libspeex [no]
183 --enable-libtheora enable Theora encoding via libtheora [no]
184 --enable-libvorbis enable Vorbis encoding via libvorbis,
185 native implementation exists [no]
186 --enable-libx264 enable H.264 encoding via x264 [no]
187 --enable-libxvid enable Xvid encoding via xvidcore,
188 native MPEG-4/Xvid encoder exists [no]
189 --enable-mlib enable Sun medialib [no]
190 --enable-zlib enable zlib [autodetect]
191
192 Advanced options (experts only):
193 --source-path=PATH path to source code [$source_path]
194 --cross-prefix=PREFIX use PREFIX for compilation tools [$cross_prefix]
195 --enable-cross-compile assume a cross-compiler is used
196 --sysroot=PATH root of cross-build tree
197 --sysinclude=PATH location of cross-build system headers
198 --target-os=OS compiler targets OS [$target_os]
199 --target-exec=CMD command to run executables on target
200 --target-path=DIR path to view of build directory on target
201 --nm=NM use nm tool
202 --ar=AR use archive tool AR [$ar_default]
203 --as=AS use assembler AS [$as_default]
204 --cc=CC use C compiler CC [$cc_default]
205 --ld=LD use linker LD
206 --host-cc=HOSTCC use host C compiler HOSTCC
207 --host-cflags=HCFLAGS use HCFLAGS when compiling for host
208 --host-ldflags=HLDFLAGS use HLDFLAGS when linking for host
209 --host-libs=HLIBS use libs HLIBS when linking for host
210 --extra-cflags=ECFLAGS add ECFLAGS to CFLAGS [$CFLAGS]
211 --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
212 --extra-libs=ELIBS add ELIBS [$ELIBS]
213 --extra-version=STRING version string suffix []
214 --build-suffix=SUFFIX library name suffix []
215 --arch=ARCH select architecture [$arch]
216 --cpu=CPU select the minimum required CPU (affects
217 instruction selection, may crash on older CPUs)
218 --enable-powerpc-perf enable performance report on PPC
219 (requires enabling PMC)
220 --disable-asm disable all assembler optimizations
221 --disable-altivec disable AltiVec optimizations
222 --disable-amd3dnow disable 3DNow! optimizations
223 --disable-amd3dnowext disable 3DNow! extended optimizations
224 --disable-mmx disable MMX optimizations
225 --disable-mmx2 disable MMX2 optimizations
226 --disable-sse disable SSE optimizations
227 --disable-ssse3 disable SSSE3 optimizations
228 --disable-armv5te disable armv5te optimizations
229 --disable-armv6 disable armv6 optimizations
230 --disable-armv6t2 disable armv6t2 optimizations
231 --disable-armvfp disable ARM VFP optimizations
232 --disable-iwmmxt disable iwmmxt optimizations
233 --disable-mmi disable MMI optimizations
234 --disable-neon disable neon optimizations
235 --disable-vis disable VIS optimizations
236 --disable-yasm disable use of yasm assembler
237 --enable-pic build position-independent code
238 --malloc-prefix=PFX prefix malloc and related names with PFX
239 --enable-sram allow use of on-chip SRAM
240
241 Developer options (useful when working on FFmpeg itself):
242 --disable-debug disable debugging symbols
243 --enable-debug=LEVEL set the debug level [$debuglevel]
244 --enable-gprof enable profiling with gprof [$gprof]
245 --disable-optimizations disable compiler optimizations
246 --enable-extra-warnings enable more compiler warnings
247 --disable-stripping disable stripping of executables and shared libraries
248 --samples=PATH location of test samples for FATE
249
250 NOTE: Object files are built at the place where configure is launched.
251 EOF
252 exit 0
253 }
254
255 log(){
256 echo "$@" >> $logfile
257 }
258
259 log_file(){
260 log BEGIN $1
261 pr -n -t $1 >> $logfile
262 log END $1
263 }
264
265 echolog(){
266 log "$@"
267 echo "$@"
268 }
269
270 die(){
271 echolog "$@"
272 cat <<EOF
273
274 If you think configure made a mistake, make sure you are using the latest
275 version from SVN. If the latest version fails, report the problem to the
276 ffmpeg-user@mplayerhq.hu mailing list or IRC #ffmpeg on irc.freenode.net.
277 EOF
278 if disabled logging; then
279 cat <<EOF
280 Rerun configure with logging enabled (do not use --disable-logging), and
281 include the log this produces with your report.
282 EOF
283 else
284 cat <<EOF
285 Include the log file "$logfile" produced by configure as this will help
286 solving the problem.
287 EOF
288 fi
289 exit 1
290 }
291
292 # Avoid locale weirdness, besides we really just want to translate ASCII.
293 toupper(){
294 echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
295 }
296
297 tolower(){
298 echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
299 }
300
301 c_escape(){
302 echo "$*" | sed 's/["\\]/\\\0/g'
303 }
304
305 sh_quote(){
306 v=$(echo "$1" | sed "s/'/'\\\\''/g")
307 test "$v" = "${v#*[ |&;<>()$\`\\\"\'*?\[\]#~=%]}" || v="'$v'"
308 echo "$v"
309 }
310
311 filter(){
312 pat=$1
313 shift
314 for v; do
315 eval "case $v in $pat) echo $v ;; esac"
316 done
317 }
318
319 map(){
320 m=$1
321 shift
322 for v; do eval $m; done
323 }
324
325 set_all(){
326 value=$1
327 shift
328 for var in $*; do
329 eval $var=$value
330 done
331 }
332
333 set_weak(){
334 value=$1
335 shift
336 for var; do
337 eval : \${$var:=$value}
338 done
339 }
340
341 pushvar(){
342 for var in $*; do
343 eval level=\${${var}_level:=0}
344 eval ${var}_${level}="\$$var"
345 eval ${var}_level=$(($level+1))
346 done
347 }
348
349 popvar(){
350 for var in $*; do
351 eval level=\${${var}_level:-0}
352 test $level = 0 && continue
353 eval level=$(($level-1))
354 eval $var="\${${var}_${level}}"
355 eval ${var}_level=$level
356 eval unset ${var}_${level}
357 done
358 }
359
360 enable(){
361 set_all yes $*
362 }
363
364 disable(){
365 set_all no $*
366 }
367
368 enable_weak(){
369 set_weak yes $*
370 }
371
372 disable_weak(){
373 set_weak no $*
374 }
375
376 enable_safe(){
377 for var; do
378 enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
379 done
380 }
381
382 disable_safe(){
383 for var; do
384 disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
385 done
386 }
387
388 do_enable_deep(){
389 for var; do
390 enabled $var && continue
391 eval sel="\$${var}_select"
392 eval sgs="\$${var}_suggest"
393 pushvar var sgs
394 enable_deep $sel
395 popvar sgs
396 enable_deep_weak $sgs
397 popvar var
398 done
399 }
400
401 enable_deep(){
402 do_enable_deep $*
403 enable $*
404 }
405
406 enable_deep_weak(){
407 do_enable_deep $*
408 enable_weak $*
409 }
410
411 enabled(){
412 test "${1#!}" = "$1" && op== || op=!=
413 eval test "x\$${1#!}" $op "xyes"
414 }
415
416 disabled(){
417 test "${1#!}" = "$1" && op== || op=!=
418 eval test "x\$${1#!}" $op "xno"
419 }
420
421 enabled_all(){
422 for opt; do
423 enabled $opt || return 1
424 done
425 }
426
427 disabled_all(){
428 for opt; do
429 disabled $opt || return 1
430 done
431 }
432
433 enabled_any(){
434 for opt; do
435 enabled $opt && return 0
436 done
437 }
438
439 disabled_any(){
440 for opt; do
441 disabled $opt && return 0
442 done
443 return 1
444 }
445
446 set_default(){
447 for opt; do
448 eval : \${$opt:=\$${opt}_default}
449 done
450 }
451
452 is_in(){
453 value=$1
454 shift
455 for var in $*; do
456 [ $var = $value ] && return 0
457 done
458 return 1
459 }
460
461 check_deps(){
462 for cfg; do
463 cfg="${cfg#!}"
464 enabled ${cfg}_checking && die "Circular dependency for $cfg."
465 disabled ${cfg}_checking && continue
466 enable ${cfg}_checking
467
468 eval dep_all="\$${cfg}_deps"
469 eval dep_any="\$${cfg}_deps_any"
470 eval dep_sel="\$${cfg}_select"
471 eval dep_sgs="\$${cfg}_suggest"
472 eval dep_ifa="\$${cfg}_if"
473 eval dep_ifn="\$${cfg}_if_any"
474
475 pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
476 check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
477 popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
478
479 [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
480 [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
481 enabled_all $dep_all || disable $cfg
482 enabled_any $dep_any || disable $cfg
483 disabled_any $dep_sel && disable $cfg
484
485 if enabled $cfg; then
486 eval dep_extralibs="\$${cfg}_extralibs"
487 test -n "$dep_extralibs" && add_extralibs $dep_extralibs
488 enable_deep $dep_sel
489 enable_deep_weak $dep_sgs
490 fi
491
492 disable ${cfg}_checking
493 done
494 }
495
496 print_config(){
497 pfx=$1
498 header=$2
499 makefile=$3
500 shift 3
501 for cfg; do
502 ucname="$(toupper $cfg)"
503 if enabled $cfg; then
504 echo "#define ${pfx}${ucname} 1" >> $header
505 echo "${pfx}${ucname}=yes" >> $makefile
506 else
507 echo "#define ${pfx}${ucname} 0" >> $header
508 echo "!${pfx}${ucname}=yes" >> $makefile
509 fi
510 done
511 }
512
513 flags_saved(){
514 (: ${SAVE_CFLAGS?}) 2> /dev/null
515 }
516
517 save_flags(){
518 flags_saved && return
519 SAVE_CFLAGS="$CFLAGS"
520 SAVE_LDFLAGS="$LDFLAGS"
521 SAVE_extralibs="$extralibs"
522 }
523
524 restore_flags(){
525 flags_saved || return
526 CFLAGS="$SAVE_CFLAGS"
527 LDFLAGS="$SAVE_LDFLAGS"
528 extralibs="$SAVE_extralibs"
529 unset SAVE_CFLAGS
530 unset SAVE_LDFLAGS
531 unset SAVE_extralibs
532 }
533
534 temp_cflags(){
535 save_flags
536 CFLAGS="$CFLAGS $*"
537 }
538
539 temp_ldflags(){
540 save_flags
541 LDFLAGS="$LDFLAGS $*"
542 }
543
544 temp_extralibs(){
545 save_flags
546 extralibs="$extralibs $*"
547 }
548
549 append(){
550 var=$1
551 shift
552 flags_saved && eval "SAVE_$var=\"\$SAVE_$var $*\""
553 eval "$var=\"\$$var $*\""
554 }
555
556 add_cppflags(){
557 append CPPFLAGS $($filter_cppflags "$@")
558 }
559
560 add_cflags(){
561 append CFLAGS $($filter_cflags "$@")
562 }
563
564 add_asflags(){
565 append ASFLAGS $($filter_asflags "$@")
566 }
567
568 add_ldflags(){
569 append LDFLAGS "$@"
570 }
571
572 add_extralibs(){
573 append extralibs "$@"
574 }
575
576 check_cmd(){
577 log "$@"
578 "$@" >> $logfile 2>&1
579 }
580
581 check_cc(){
582 log check_cc "$@"
583 cat > $TMPC
584 log_file $TMPC
585 check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
586 }
587
588 check_cpp(){
589 log check_cpp "$@"
590 cat > $TMPC
591 log_file $TMPC
592 check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
593 }
594
595 check_as(){
596 log check_as "$@"
597 cat > $TMPC
598 log_file $TMPC
599 check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
600 }
601
602 check_asm(){
603 log check_asm "$@"
604 name="$1"
605 code="$2"
606 shift 2
607 disable $name
608 check_as "$@" <<EOF && enable $name
609 void foo(void){ __asm__ volatile($code); }
610 EOF
611 }
612
613 check_yasm(){
614 log check_yasm "$@"
615 echo "$1" > $TMPS
616 log_file $TMPS
617 shift 1
618 check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
619 }
620
621 check_ld(){
622 log check_ld "$@"
623 flags=''
624 libs=''
625 for f; do
626 test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
627 done
628 check_cc $($filter_cflags $flags) || return
629 check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $extralibs $libs
630 }
631
632 check_cppflags(){
633 log check_cppflags "$@"
634 set -- $($filter_cppflags "$@")
635 check_cc "$@" <<EOF && append CPPFLAGS "$@"
636 int x;
637 EOF
638 }
639
640 check_cflags(){
641 log check_cflags "$@"
642 set -- $($filter_cflags "$@")
643 check_cc "$@" <<EOF && append CFLAGS "$@"
644 int x;
645 EOF
646 }
647
648 test_ldflags(){
649 log test_ldflags "$@"
650 check_ld "$@" <<EOF
651 int main(void){ return 0; }
652 EOF
653 }
654
655 check_ldflags(){
656 log check_ldflags "$@"
657 test_ldflags "$@" && add_ldflags "$@"
658 }
659
660 check_header(){
661 log check_header "$@"
662 header=$1
663 shift
664 disable_safe $header
665 check_cpp "$@" <<EOF && enable_safe $header
666 #include <$header>
667 int x;
668 EOF
669 }
670
671 check_func(){
672 log check_func "$@"
673 func=$1
674 shift
675 disable $func
676 check_ld "$@" <<EOF && enable $func
677 extern int $func();
678 int main(void){ $func(); }
679 EOF
680 }
681
682 check_mathfunc(){
683 log check_mathfunc "$@"
684 func=$1
685 shift
686 disable $func
687 check_ld "$@" <<EOF && enable $func
688 #include <math.h>
689 float foo(float f) { return $func(f); }
690 int main(void){ return 0; }
691 EOF
692 }
693
694 check_func_headers(){
695 log check_func_headers "$@"
696 headers=$1
697 func=$2
698 shift 2
699 disable $func
700 incs=""
701 for hdr in $headers; do
702 incs="$incs
703 #include <$hdr>"
704 done
705 check_ld "$@" <<EOF && enable $func && enable_safe $headers
706 $incs
707 int main(int argc, char **argv){
708 return (long) $func;
709 }
710 EOF
711 }
712
713 check_cpp_condition(){
714 log check_cpp_condition "$@"
715 header=$1
716 condition=$2
717 shift 2
718 check_cpp $($filter_cppflags "$@") <<EOF
719 #include <$header>
720 #if !($condition)
721 #error "unsatisfied condition: $condition"
722 #endif
723 EOF
724 }
725
726 check_lib(){
727 log check_lib "$@"
728 header="$1"
729 func="$2"
730 shift 2
731 temp_extralibs "$@"
732 check_header $header && check_func $func && add_extralibs "$@"
733 err=$?
734 restore_flags
735 return $err
736 }
737
738 check_lib2(){
739 log check_lib2 "$@"
740 headers="$1"
741 func="$2"
742 shift 2
743 check_func_headers "$headers" $func "$@" && add_extralibs "$@"
744 }
745
746 check_exec(){
747 check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
748 }
749
750 check_exec_crash(){
751 code=$(cat)
752
753 # exit() is not async signal safe. _Exit (C99) and _exit (POSIX)
754 # are safe but may not be available everywhere. Thus we use
755 # raise(SIGTERM) instead. The check is run in a subshell so we
756 # can redirect the "Terminated" message from the shell. SIGBUS
757 # is not defined by standard C so it is used conditionally.
758
759 (check_exec "$@") >> $logfile 2>&1 <<EOF
760 #include <signal.h>
761 static void sighandler(int sig){
762 raise(SIGTERM);
763 }
764 int main(void){
765 signal(SIGILL, sighandler);
766 signal(SIGFPE, sighandler);
767 signal(SIGSEGV, sighandler);
768 #ifdef SIGBUS
769 signal(SIGBUS, sighandler);
770 #endif
771 { $code }
772 }
773 EOF
774 }
775
776 check_type(){
777 log check_type "$@"
778 headers=$1
779 type=$2
780 shift 2
781 disable_safe "$type"
782 incs=""
783 for hdr in $headers; do
784 incs="$incs
785 #include <$hdr>"
786 done
787 check_cc "$@" <<EOF && enable_safe "$type"
788 $incs
789 $type v;
790 EOF
791 }
792
793 check_struct(){
794 log check_type "$@"
795 headers=$1
796 struct=$2
797 member=$3
798 shift 3
799 disable_safe "${struct}_${member}"
800 incs=""
801 for hdr in $headers; do
802 incs="$incs
803 #include <$hdr>"
804 done
805 check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
806 $incs
807 const void *p = &(($struct *)0)->$member;
808 EOF
809 }
810
811 require(){
812 name="$1"
813 header="$2"
814 func="$3"
815 shift 3
816 check_lib $header $func "$@" || die "ERROR: $name not found"
817 }
818
819 require2(){
820 name="$1"
821 headers="$2"
822 func="$3"
823 shift 3
824 check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
825 }
826
827 check_foo_config(){
828 cfg=$1
829 pkg=$2
830 header=$3
831 func=$4
832 shift 4
833 disable $cfg
834 check_cmd ${pkg}-config --version
835 err=$?
836 if test "$err" = 0; then
837 temp_cflags $(${pkg}-config --cflags)
838 temp_extralibs $(${pkg}-config --libs)
839 check_lib "$@" $header $func && enable $cfg
840 fi
841 return $err
842 }
843
844 check_host_cc(){
845 log check_host_cc "$@"
846 cat > $TMPC
847 log_file $TMPC
848 check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
849 }
850
851 check_host_cflags(){
852 log check_host_cflags "$@"
853 check_host_cc "$@" <<EOF && append host_cflags "$@"
854 int x;
855 EOF
856 }
857
858 apply(){
859 file=$1
860 shift
861 "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
862 }
863
864 cp_if_changed(){
865 cmp -s "$1" "$2" &&
866 echo "$2 is unchanged" ||
867 cp -f "$1" "$2"
868 }
869
870 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
871 # system-dependent things.
872
873 COMPONENT_LIST="
874 bsfs
875 decoders
876 demuxers
877 encoders
878 filters
879 hwaccels
880 indevs
881 muxers
882 outdevs
883 parsers
884 protocols
885 "
886
887 CONFIG_LIST="
888 $COMPONENT_LIST
889 aandct
890 avcodec
891 avdevice
892 avfilter
893 avfilter_lavf
894 avformat
895 avisynth
896 beos_netserver
897 bzlib
898 dct
899 doc
900 dwt
901 dxva2
902 fastdiv
903 ffmpeg
904 ffplay
905 ffprobe
906 ffserver
907 fft
908 golomb
909 gpl
910 gprof
911 gray
912 h264dsp
913 hardcoded_tables
914 libdc1394
915 libdirac
916 libfaac
917 libfaad
918 libfaadbin
919 libgsm
920 libmp3lame
921 libnut
922 libopencore_amrnb
923 libopencore_amrwb
924 libopenjpeg
925 librtmp
926 libschroedinger
927 libspeex
928 libtheora
929 libvorbis
930 libx264
931 libxvid
932 lpc
933 lsp
934 mdct
935 memalign_hack
936 mlib
937 mpegaudio_hp
938 network
939 nonfree
940 pic
941 postproc
942 powerpc_perf
943 rdft
944 runtime_cpudetect
945 shared
946 small
947 sram
948 static
949 swscale
950 swscale_alpha
951 vaapi
952 vdpau
953 version3
954 x11grab
955 zlib
956 "
957
958 THREADS_LIST='
959 beosthreads
960 os2threads
961 pthreads
962 w32threads
963 '
964
965 ARCH_LIST='
966 alpha
967 arm
968 avr32
969 avr32_ap
970 avr32_uc
971 bfin
972 ia64
973 m68k
974 mips
975 mips64
976 parisc
977 ppc
978 ppc64
979 s390
980 sh4
981 sparc
982 sparc64
983 tomi
984 x86
985 x86_32
986 x86_64
987 '
988
989 ARCH_EXT_LIST='
990 altivec
991 amd3dnow
992 amd3dnowext
993 armv5te
994 armv6
995 armv6t2
996 armvfp
997 iwmmxt
998 mmi
999 mmx
1000 mmx2
1001 neon
1002 ppc4xx
1003 sse
1004 ssse3
1005 vis
1006 '
1007
1008 HAVE_LIST_PUB='
1009 bigendian
1010 '
1011
1012 HAVE_LIST="
1013 $ARCH_EXT_LIST
1014 $HAVE_LIST_PUB
1015 $THREADS_LIST
1016 alsa_asoundlib_h
1017 altivec_h
1018 arpa_inet_h
1019 attribute_may_alias
1020 attribute_packed
1021 bswap
1022 closesocket
1023 cmov
1024 conio_h
1025 dcbzl
1026 dev_bktr_ioctl_bt848_h
1027 dev_bktr_ioctl_meteor_h
1028 dev_ic_bt8xx_h
1029 dev_video_meteor_ioctl_meteor_h
1030 dev_video_bktr_ioctl_bt848_h
1031 dlfcn_h
1032 dlopen
1033 dos_paths
1034 ebp_available
1035 ebx_available
1036 exp2
1037 exp2f
1038 fast_64bit
1039 fast_clz
1040 fast_cmov
1041 fast_unaligned
1042 fork
1043 getaddrinfo
1044 gethrtime
1045 GetProcessMemoryInfo
1046 GetProcessTimes
1047 getrusage
1048 struct_rusage_ru_maxrss
1049 inet_aton
1050 inline_asm
1051 isatty
1052 ldbrx
1053 libdc1394_1
1054 libdc1394_2
1055 llrint
1056 llrintf
1057 local_aligned_16
1058 local_aligned_8
1059 log2
1060 log2f
1061 loongson
1062 lrint
1063 lrintf
1064 lzo1x_999_compress
1065 machine_ioctl_bt848_h
1066 machine_ioctl_meteor_h
1067 malloc_h
1068 memalign
1069 mkstemp
1070 pld
1071 posix_memalign
1072 round
1073 roundf
1074 sdl
1075 sdl_video_size
1076 setmode
1077 socklen_t
1078 soundcard_h
1079 poll_h
1080 setrlimit
1081 strerror_r
1082 struct_addrinfo
1083 struct_ipv6_mreq
1084 struct_sockaddr_in6
1085 struct_sockaddr_sa_len
1086 struct_sockaddr_storage
1087 sys_mman_h
1088 sys_resource_h
1089 sys_select_h
1090 sys_soundcard_h
1091 sys_videoio_h
1092 ten_operands
1093 termios_h
1094 threads
1095 truncf
1096 vfp_args
1097 VirtualAlloc
1098 winsock2_h
1099 xform_asm
1100 yasm
1101 "
1102
1103 # options emitted with CONFIG_ prefix but not available on command line
1104 CONFIG_EXTRA="
1105 avutil
1106 gplv3
1107 lgplv3
1108 "
1109
1110 CMDLINE_SELECT="
1111 $ARCH_EXT_LIST
1112 $CONFIG_LIST
1113 $THREADS_LIST
1114 asm
1115 cross_compile
1116 debug
1117 extra_warnings
1118 logging
1119 optimizations
1120 stripping
1121 yasm
1122 "
1123
1124 PATHS_LIST='
1125 bindir
1126 datadir
1127 incdir
1128 libdir
1129 mandir
1130 prefix
1131 shlibdir
1132 '
1133
1134 CMDLINE_SET="
1135 $PATHS_LIST
1136 ar
1137 arch
1138 as
1139 build_suffix
1140 cc
1141 cpu
1142 cross_prefix
1143 dep_cc
1144 extra_version
1145 host_cc
1146 host_cflags
1147 host_ldflags
1148 host_libs
1149 host_os
1150 ld
1151 logfile
1152 malloc_prefix
1153 nm
1154 samples
1155 source_path
1156 strip
1157 sysinclude
1158 sysroot
1159 target_exec
1160 target_os
1161 target_path
1162 "
1163
1164 CMDLINE_APPEND="
1165 extra_cflags
1166 "
1167
1168 # code dependency declarations
1169
1170 # architecture extensions
1171
1172 armv5te_deps="arm"
1173 armv6_deps="arm"
1174 armv6t2_deps="arm"
1175 armvfp_deps="arm"
1176 iwmmxt_deps="arm"
1177 neon_deps="arm"
1178
1179 mmi_deps="mips"
1180
1181 altivec_deps="ppc"
1182 ppc4xx_deps="ppc"
1183
1184 vis_deps="sparc"
1185
1186 x86_64_suggest="cmov fast_cmov"
1187 amd3dnow_deps="mmx"
1188 amd3dnowext_deps="amd3dnow"
1189 mmx_deps="x86"
1190 mmx2_deps="mmx"
1191 sse_deps="mmx"
1192 ssse3_deps="sse"
1193
1194 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1195 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1196 fast_unaligned_if_any="armv6 ppc x86"
1197
1198 need_memalign="altivec neon sse"
1199 inline_asm_deps="!tms470"
1200
1201 # subsystems
1202 mdct_select="fft"
1203 rdft_select="fft"
1204
1205 # decoders / encoders / hardware accelerators
1206 aac_decoder_select="mdct rdft aac_parser"
1207 aac_encoder_select="mdct"
1208 ac3_decoder_select="mdct ac3_parser"
1209 alac_encoder_select="lpc"
1210 amrnb_decoder_select="lsp"
1211 atrac1_decoder_select="mdct"
1212 atrac3_decoder_select="mdct"
1213 binkaudio_dct_decoder_select="mdct rdft dct"
1214 binkaudio_rdft_decoder_select="mdct rdft"
1215 cavs_decoder_select="golomb"
1216 cook_decoder_select="mdct"
1217 cscd_decoder_suggest="zlib"
1218 dca_decoder_select="mdct"
1219 dnxhd_encoder_select="aandct"
1220 dxa_decoder_select="zlib"
1221 eac3_decoder_select="ac3_decoder"
1222 eamad_decoder_select="aandct"
1223 eatgq_decoder_select="aandct"
1224 eatqi_decoder_select="aandct"
1225 ffv1_decoder_select="golomb"
1226 flac_decoder_select="golomb"
1227 flac_encoder_select="golomb lpc"
1228 flashsv_decoder_select="zlib"
1229 flashsv_encoder_select="zlib"
1230 flv_decoder_select="h263_decoder"
1231 flv_encoder_select="h263_encoder"
1232 h261_encoder_select="aandct"
1233 h263_decoder_select="h263_parser"
1234 h263_encoder_select="aandct"
1235 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1236 h263i_decoder_select="h263_decoder"
1237 h263p_encoder_select="h263_encoder"
1238 h264_decoder_select="golomb h264dsp"
1239 h264_dxva2_hwaccel_deps="dxva2api_h"
1240 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1241 h264_vaapi_hwaccel_select="vaapi"
1242 h264_vdpau_decoder_select="vdpau h264_decoder"
1243 imc_decoder_select="fft mdct"
1244 jpegls_decoder_select="golomb"
1245 jpegls_encoder_select="golomb"
1246 ljpeg_encoder_select="aandct"
1247 loco_decoder_select="golomb"
1248 mjpeg_encoder_select="aandct"
1249 mlp_decoder_select="mlp_parser"
1250 mpeg1video_encoder_select="aandct"
1251 mpeg2video_encoder_select="aandct"
1252 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1253 mpeg4_encoder_select="h263_encoder"
1254 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1255 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1256 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1257 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1258 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1259 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1260 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1261 msmpeg4v1_decoder_select="h263_decoder"
1262 msmpeg4v1_encoder_select="h263_encoder"
1263 msmpeg4v2_decoder_select="h263_decoder"
1264 msmpeg4v2_encoder_select="h263_encoder"
1265 msmpeg4v3_decoder_select="h263_decoder"
1266 msmpeg4v3_encoder_select="h263_encoder"
1267 nellymoser_decoder_select="mdct"
1268 nellymoser_encoder_select="mdct"
1269 png_decoder_select="zlib"
1270 png_encoder_select="zlib"
1271 qcelp_decoder_select="lsp"
1272 qdm2_decoder_select="mdct rdft"
1273 rv10_decoder_select="h263_decoder"
1274 rv10_encoder_select="h263_encoder"
1275 rv20_decoder_select="h263_decoder"
1276 rv20_encoder_select="h263_encoder"
1277 rv30_decoder_select="golomb h264dsp"
1278 rv40_decoder_select="golomb h264dsp"
1279 shorten_decoder_select="golomb"
1280 sipr_decoder_select="lsp"
1281 snow_decoder_select="dwt"
1282 snow_encoder_select="aandct dwt"
1283 sonic_decoder_select="golomb"
1284 sonic_encoder_select="golomb"
1285 sonic_ls_encoder_select="golomb"
1286 svq1_encoder_select="aandct"
1287 svq3_decoder_select="golomb h264dsp"
1288 svq3_decoder_suggest="zlib"
1289 theora_decoder_select="vp3_decoder"
1290 tiff_decoder_suggest="zlib"
1291 tiff_encoder_suggest="zlib"
1292 truehd_decoder_select="mlp_decoder"
1293 tscc_decoder_select="zlib"
1294 twinvq_decoder_select="mdct lsp"
1295 vc1_decoder_select="h263_decoder"
1296 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1297 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1298 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1299 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1300 vorbis_decoder_select="mdct"
1301 vorbis_encoder_select="mdct"
1302 vp6a_decoder_select="vp6_decoder"
1303 vp6f_decoder_select="vp6_decoder"
1304 wmapro_decoder_select="mdct"
1305 wmav1_decoder_select="mdct"
1306 wmav1_encoder_select="mdct"
1307 wmav2_decoder_select="mdct"
1308 wmav2_encoder_select="mdct"
1309 wmavoice_decoder_select="lsp rdft dct"
1310 wmv1_decoder_select="h263_decoder"
1311 wmv1_encoder_select="h263_encoder"
1312 wmv2_decoder_select="h263_decoder"
1313 wmv2_encoder_select="h263_encoder"
1314 wmv3_decoder_select="vc1_decoder"
1315 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1316 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1317 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1318 zlib_decoder_select="zlib"
1319 zlib_encoder_select="zlib"
1320 zmbv_decoder_select="zlib"
1321 zmbv_encoder_select="zlib"
1322
1323 vaapi_deps="va_va_h"
1324 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1325
1326 # parsers
1327 h264_parser_select="golomb h264dsp"
1328
1329 # bitstream_filters
1330 aac_adtstoasc_bsf_select="aac_parser"
1331
1332 # external libraries
1333 libdirac_decoder_deps="libdirac !libschroedinger"
1334 libdirac_encoder_deps="libdirac"
1335 libfaac_encoder_deps="libfaac"
1336 libfaad_decoder_deps="libfaad"
1337 libfaadbin_decoder_extralibs='$ldl'
1338 libgsm_decoder_deps="libgsm"
1339 libgsm_encoder_deps="libgsm"
1340 libgsm_ms_decoder_deps="libgsm"
1341 libgsm_ms_encoder_deps="libgsm"
1342 libmp3lame_encoder_deps="libmp3lame"
1343 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1344 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1345 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1346 libopenjpeg_decoder_deps="libopenjpeg"
1347 libschroedinger_decoder_deps="libschroedinger"
1348 libschroedinger_encoder_deps="libschroedinger"
1349 libspeex_decoder_deps="libspeex"
1350 libtheora_encoder_deps="libtheora"
1351 libvorbis_encoder_deps="libvorbis"
1352 libx264_encoder_deps="libx264"
1353 libxvid_encoder_deps="libxvid"
1354
1355 # demuxers / muxers
1356 ac3_demuxer_deps="ac3_parser"
1357 asf_stream_muxer_select="asf_muxer"
1358 avisynth_demuxer_deps="avisynth"
1359 dirac_demuxer_deps="dirac_parser"
1360 eac3_demuxer_select="ac3_parser"
1361 ipod_muxer_select="mov_muxer"
1362 libnut_demuxer_deps="libnut"
1363 libnut_muxer_deps="libnut"
1364 matroska_audio_muxer_select="matroska_muxer"
1365 matroska_demuxer_suggest="zlib bzlib"
1366 mov_demuxer_suggest="zlib"
1367 mp3_demuxer_deps="mpegaudio_parser"
1368 mp4_muxer_select="mov_muxer"
1369 mpegtsraw_demuxer_select="mpegts_demuxer"
1370 mxf_d10_muxer_select="mxf_muxer"
1371 ogg_demuxer_select="golomb"
1372 psp_muxer_select="mov_muxer"
1373 rtsp_demuxer_deps="sdp_demuxer"
1374 rtsp_muxer_deps="sdp_demuxer"
1375 rtsp_muxer_select="rtp_muxer"
1376 sdp_demuxer_deps="rtp_protocol mpegts_demuxer"
1377 sdp_demuxer_select="asf_demuxer rm_demuxer"
1378 spdif_muxer_select="aac_parser"
1379 tg2_muxer_select="mov_muxer"
1380 tgp_muxer_select="mov_muxer"
1381 w64_demuxer_deps="wav_demuxer"
1382
1383 # indevs / outdevs
1384 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1385 alsa_indev_extralibs="-lasound"
1386 alsa_outdev_deps="alsa_asoundlib_h"
1387 alsa_outdev_extralibs="-lasound"
1388 audio_beos_indev_deps="audio_beos"
1389 audio_beos_indev_extralibs="-lmedia -lbe"
1390 audio_beos_outdev_deps="audio_beos"
1391 audio_beos_outdev_extralibs="-lmedia -lbe"
1392 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1393 dv1394_indev_deps="dv1394 dv_demuxer"
1394 jack_indev_deps="jack_jack_h"
1395 jack_indev_extralibs="-ljack"
1396 libdc1394_indev_deps="libdc1394"
1397 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1398 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1399 v4l_indev_deps="linux_videodev_h"
1400 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1401 vfwcap_indev_deps="capCreateCaptureWindow"
1402 vfwcap_indev_extralibs="-lavicap32"
1403 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1404 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1405
1406 # protocols
1407 gopher_protocol_deps="network"
1408 http_protocol_deps="network"
1409 http_protocol_select="tcp_protocol"
1410 rtmp_protocol_deps="tcp_protocol"
1411 rtp_protocol_deps="udp_protocol"
1412 tcp_protocol_deps="network"
1413 udp_protocol_deps="network"
1414
1415 # filters
1416 movie_filter_deps="avfilter_lavf"
1417 avfilter_lavf_deps="avformat"
1418
1419 # libraries
1420 avdevice_deps="avcodec avformat"
1421 avformat_deps="avcodec"
1422
1423 # programs
1424 ffmpeg_deps="avcodec avformat swscale"
1425 ffplay_deps="avcodec avformat swscale sdl"
1426 ffplay_select="rdft"
1427 ffprobe_deps="avcodec avformat"
1428 ffserver_deps="avformat ffm_muxer rtp_protocol rtsp_demuxer"
1429 ffserver_extralibs='$ldl'
1430
1431 doc_deps="texi2html"
1432
1433 # default parameters
1434
1435 logfile="config.err"
1436
1437 # installation paths
1438 prefix_default="/usr/local"
1439 bindir_default='${prefix}/bin'
1440 datadir_default='${prefix}/share/ffmpeg'
1441 incdir_default='${prefix}/include'
1442 libdir_default='${prefix}/lib'
1443 mandir_default='${prefix}/share/man'
1444 shlibdir_default="$libdir_default"
1445
1446 # toolchain
1447 ar_default="ar"
1448 cc_default="gcc"
1449 cc_version=\"unknown\"
1450 host_cc_default="gcc"
1451 ln_s="ln -sf"
1452 nm_default="nm"
1453 objformat="elf"
1454 ranlib="ranlib"
1455 strip_default="strip"
1456 yasmexe="yasm"
1457
1458 nm_opts='-g'
1459
1460 # machine
1461 arch_default=$(uname -m)
1462 cpu="generic"
1463
1464 # OS
1465 target_os_default=$(tolower $(uname -s))
1466 host_os=$target_os_default
1467
1468 # configurable options
1469 enable avcodec
1470 enable avdevice
1471 enable avformat
1472 enable avutil
1473 enable asm
1474 enable debug
1475 enable doc
1476 enable fastdiv
1477 enable ffmpeg
1478 enable ffplay
1479 enable ffprobe
1480 enable ffserver
1481 enable mpegaudio_hp
1482 enable network
1483 enable optimizations
1484 enable protocols
1485 enable static
1486 enable stripping
1487 enable swscale
1488 enable swscale_alpha
1489
1490 # build settings
1491 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1492 FFSERVERLDFLAGS=-Wl,-E
1493 LIBPREF="lib"
1494 LIBSUF=".a"
1495 FULLNAME='$(NAME)$(BUILDSUF)'
1496 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1497 SLIBPREF="lib"
1498 SLIBSUF=".so"
1499 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1500 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1501 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1502 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1503
1504 CC_O='-o $@'
1505
1506 host_cflags='-D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -O3 -g -Wall'
1507 host_libs='-lm'
1508
1509 target_path='$(CURDIR)'
1510
1511 # gcc stupidly only outputs the basename of targets with -MM, but we need the
1512 # full relative path for objects in subdirectories for non-recursive Make.
1513 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1514 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1515
1516 # find source path
1517 source_path="$(dirname "$0")"
1518 enable source_path_used
1519 if test -f configure; then
1520 source_path="$(pwd)"
1521 disable source_path_used
1522 else
1523 source_path="$(cd "$source_path"; pwd)"
1524 echo "$source_path" | grep -q '[[:blank:]]' &&
1525 die "Out of tree builds are impossible with whitespace in source path."
1526 test -e "$source_path/config.h" &&
1527 die "Out of tree builds are impossible with config.h in source dir."
1528 fi
1529
1530 for v in "$@"; do
1531 r=${v#*=}
1532 l=${v%"$r"}
1533 r=$(sh_quote "$r")
1534 FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
1535 done
1536
1537 find_things(){
1538 thing=$1
1539 pattern=$2
1540 file=$source_path/$3
1541 sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1542 }
1543
1544 ENCODER_LIST=$(find_things encoder ENC libavcodec/allcodecs.c)
1545 DECODER_LIST=$(find_things decoder DEC libavcodec/allcodecs.c)
1546 HWACCEL_LIST=$(find_things hwaccel HWACCEL libavcodec/allcodecs.c)
1547 PARSER_LIST=$(find_things parser PARSER libavcodec/allcodecs.c)
1548 BSF_LIST=$(find_things bsf BSF libavcodec/allcodecs.c)
1549 MUXER_LIST=$(find_things muxer _MUX libavformat/allformats.c)
1550 DEMUXER_LIST=$(find_things demuxer DEMUX libavformat/allformats.c)
1551 OUTDEV_LIST=$(find_things outdev OUTDEV libavdevice/alldevices.c)
1552 INDEV_LIST=$(find_things indev _IN libavdevice/alldevices.c)
1553 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1554 FILTER_LIST=$(find_things filter FILTER libavfilter/allfilters.c)
1555
1556 for n in $COMPONENT_LIST; do
1557 v=$(toupper ${n%s})_LIST
1558 eval enable \$$v
1559 eval ${n}_if_any="\$$v"
1560 done
1561
1562 enable $ARCH_EXT_LIST
1563
1564 die_unknown(){
1565 echo "Unknown option \"$1\"."
1566 echo "See $0 --help for available options."
1567 exit 1
1568 }
1569
1570 show_list() {
1571 suffix=_$1
1572 shift
1573 echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1574 exit 0
1575 }
1576
1577 for opt do
1578 optval="${opt#*=}"
1579 case "$opt" in
1580 --extra-ldflags=*) add_ldflags $optval
1581 ;;
1582 --extra-libs=*) add_extralibs $optval
1583 ;;
1584 --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1585 ;;
1586 --enable-debug=*) debuglevel="$optval"
1587 ;;
1588 --disable-everything)
1589 map 'eval disable \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1590 ;;
1591 --enable-*=*|--disable-*=*)
1592 eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1593 is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1594 eval list=\$$(toupper $thing)_LIST
1595 name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1596 $action $(filter "$name" $list)
1597 ;;
1598 --enable-?*|--disable-?*)
1599 eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1600 if is_in $option $COMPONENT_LIST; then
1601 test $action = disable && action=unset
1602 eval $action \$$(toupper ${option%s})_LIST
1603 elif is_in $option $CMDLINE_SELECT; then
1604 $action $option
1605 else
1606 die_unknown $opt
1607 fi
1608 ;;
1609 --list-*)
1610 NAME="${opt#--list-}"
1611 is_in $NAME $COMPONENT_LIST || die_unknown $opt
1612 NAME=${NAME%s}
1613 eval show_list $NAME \$$(toupper $NAME)_LIST
1614 ;;
1615 --help|-h) show_help
1616 ;;
1617 *)
1618 optname="${opt%%=*}"
1619 optname="${optname#--}"
1620 optname=$(echo "$optname" | sed 's/-/_/g')
1621 if is_in $optname $CMDLINE_SET; then
1622 eval $optname='$optval'
1623 elif is_in $optname $CMDLINE_APPEND; then
1624 append $optname "$optval"
1625 else
1626 die_unknown $opt
1627 fi
1628 ;;
1629 esac
1630 done
1631
1632 disabled logging && logfile=/dev/null
1633
1634 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
1635 set >> $logfile
1636
1637 test -n "$cross_prefix" && enable cross_compile
1638
1639 if enabled cross_compile; then
1640 test -n "$arch" && test -n "$target_os" ||
1641 die "Must specify target arch and OS when cross-compiling"
1642 fi
1643
1644 set_default arch target_os
1645
1646 ar_default="${cross_prefix}${ar_default}"
1647 cc_default="${cross_prefix}${cc_default}"
1648 nm_default="${cross_prefix}${nm_default}"
1649 ranlib="${cross_prefix}${ranlib}"
1650 strip_default="${cross_prefix}${strip_default}"
1651
1652 sysinclude_default="${sysroot}/usr/include"
1653
1654 set_default cc nm strip sysinclude
1655 enabled cross_compile || host_cc_default=$cc
1656 set_default host_cc
1657
1658 exesuf() {
1659 case $1 in
1660 mingw32*|cygwin*|*-dos|freedos|opendos|os/2*) echo .exe ;;
1661 esac
1662 }
1663
1664 EXESUF=$(exesuf $target_os)
1665 HOSTEXESUF=$(exesuf $host_os)
1666
1667 # set temporary file name
1668 : ${TMPDIR:=$TEMPDIR}
1669 : ${TMPDIR:=$TMP}
1670 : ${TMPDIR:=/tmp}
1671
1672 if ! check_cmd type mktemp; then
1673 # simple replacement for missing mktemp
1674 # NOT SAFE FOR GENERAL USE
1675 mktemp(){
1676 echo "${2%XXX*}.${HOSTNAME}.${UID}.$$"
1677 }
1678 fi
1679
1680 tmpfile(){
1681 tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1682 (set -C; exec > $tmp) 2>/dev/null ||
1683 die "Unable to create temporary file in $TMPDIR."
1684 append TMPFILES $tmp
1685 eval $1=$tmp
1686 }
1687
1688 trap 'rm -f -- $TMPFILES' EXIT
1689 trap exit HUP INT TERM
1690
1691 tmpfile TMPC .c
1692 tmpfile TMPE $EXESUF
1693 tmpfile TMPH .h
1694 tmpfile TMPO .o
1695 tmpfile TMPS .S
1696 tmpfile TMPV .ver
1697 tmpfile TMPSH .sh
1698
1699 unset -f mktemp
1700
1701 # make sure we can execute files in $TMPDIR
1702 cat > $TMPSH 2>> $logfile <<EOF
1703 #! /bin/sh
1704 EOF
1705 chmod +x $TMPSH >> $logfile 2>&1
1706 if ! $TMPSH >> $logfile 2>&1; then
1707 cat <<EOF
1708 Unable to create and execute files in $TMPDIR. Set the TMPDIR environment
1709 variable to another directory and make sure that it is not mounted noexec.
1710 EOF
1711 die "Sanity test failed."
1712 fi
1713
1714 filter_cflags=echo
1715 filter_cppflags=echo
1716 filter_asflags=echo
1717
1718 if $cc -v 2>&1 | grep -qi ^gcc; then
1719 cc_type=gcc
1720 cc_version=__VERSION__
1721 if ! $cc -dumpversion | grep -q '^2\.'; then
1722 CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1723 AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1724 fi
1725 speed_cflags='-O3'
1726 size_cflags='-Os'
1727 elif $cc --version 2>/dev/null | grep -q Intel; then
1728 cc_type=icc
1729 cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1730 CC_DEPFLAGS='-MMD'
1731 AS_DEPFLAGS='-MMD'
1732 speed_cflags='-O3'
1733 size_cflags='-Os'
1734 noopt_cflags='-O1'
1735 elif $cc -v 2>&1 | grep -q xlc; then
1736 cc_type=xlc
1737 cc_version="AV_STRINGIFY(__IBMC__)"
1738 speed_cflags='-O5'
1739 size_cflags='-O5 -qcompact'
1740 elif $cc -V 2>/dev/null | grep -q Compaq; then
1741 cc_type=ccc
1742 cc_version="AV_STRINGIFY(__DECC_VER)"
1743 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1744 debuglevel=3
1745 add_ldflags -Wl,-z,now # calls to libots crash without this
1746 speed_cflags='-fast'
1747 size_cflags='-O1'
1748 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
1749 test -d "$sysroot" || die "No valid sysroot specified."
1750 cc_type=armcc
1751 cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
1752 armcc_conf="$PWD/armcc.conf"
1753 $cc --arm_linux_configure \
1754 --arm_linux_config_file="$armcc_conf" \
1755 --configure_sysroot="$sysroot" \
1756 --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
1757 die "Error creating armcc configuration file."
1758 cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
1759 as_default="${cross_prefix}gcc"
1760 CC_DEPFLAGS='-MMD'
1761 AS_DEPFLAGS='-MMD'
1762 speed_cflags='-O3'
1763 size_cflags='-Os'
1764 elif $cc -version 2>/dev/null | grep -q TMS470; then
1765 cc_type=tms470
1766 cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
1767 cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
1768 CC_O='-fr=$(@D)'
1769 as_default="${cross_prefix}gcc"
1770 ld_default="${cross_prefix}gcc"
1771 TMPO=$(basename $TMPC .c).o
1772 append TMPFILES $TMPO
1773 add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
1774 CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
1775 AS_DEPFLAGS='-MMD'
1776 speed_cflags='-O3 -mf=5'
1777 size_cflags='-O3 -mf=2'
1778 filter_cflags=tms470_flags
1779 tms470_flags(){
1780 for flag; do
1781 case $flag in
1782 -march=*|-mcpu=*)
1783 case "${flag#*=}" in
1784 armv7-a|cortex-a*) echo -mv=7a8 ;;
1785 armv7-r|cortex-r*) echo -mv=7r4 ;;
1786 armv7-m|cortex-m*) echo -mv=7m3 ;;
1787 armv6*|arm11*) echo -mv=6 ;;
1788 armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
1789 echo -mv=5e ;;
1790 armv4*|arm7*|arm9[24]*) echo -mv=4 ;;
1791 esac
1792 ;;
1793 -mfpu=neon) echo --float_support=vfpv3 --neon ;;
1794 -mfpu=vfp) echo --float_support=vfpv2 ;;
1795 -mfpu=vfpv3) echo --float_support=vfpv3 ;;
1796 -msoft-float) echo --float_support=vfplib ;;
1797 -O[0-3]|-mf=*) echo $flag ;;
1798 -g) echo -g -mn ;;
1799 -pds=*) echo $flag ;;
1800 esac
1801 done
1802 }
1803 elif $cc -v 2>&1 | grep -q clang; then
1804 cc_type=clang
1805 cc_version=__VERSION__
1806 CC_DEPFLAGS='-MMD'
1807 AS_DEPFLAGS='-MMD'
1808 speed_cflags='-O3'
1809 size_cflags='-Os'
1810 elif $cc -V 2>&1 | grep -q Sun; then
1811 cc_type=suncc
1812 cc_version="AV_STRINGIFY(__SUNPRO_C)"
1813 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
1814 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
1815 speed_cflags='-O5'
1816 size_cflags='-O5 -xspace'
1817 filter_cflags=suncc_flags
1818 suncc_flags(){
1819 for flag; do
1820 case $flag in
1821 -march=*|-mcpu=*)
1822 case "${flag#*=}" in
1823 native) echo -xtarget=native ;;
1824 v9) echo -xarch=sparc ;;
1825 ultrasparc) echo -xarch=sparcvis ;;
1826 ultrasparc3|niagara*) echo -xarch=sparcvis2 ;;
1827 i586|pentium) echo -xchip=pentium ;;
1828 i686|pentiumpro|pentium2) echo -xtarget=pentium_pro ;;
1829 pentium3*|c3-2) echo -xtarget=pentium3 ;;
1830 pentium-m) echo -xarch=sse2 -xchip=pentium3 ;;
1831 pentium4*) echo -xtarget=pentium4 ;;
1832 prescott|nocona) echo -xarch=sse3 -xchip=pentium4 ;;
1833 *-sse3) echo -xarch=sse3 ;;
1834 core2) echo -xarch=ssse3 -xchip=core2 ;;
1835 amdfam10|barcelona) echo -xarch=sse4_1 ;;
1836 athlon-4|athlon-[mx]p) echo -xarch=ssea ;;
1837 k8|opteron|athlon64|athlon-fx)
1838 echo -xarch=sse2a ;;
1839 athlon*) echo -xarch=pentium_proa ;;
1840 esac
1841 ;;
1842 -std=c99) echo -xc99 ;;
1843 -fomit-frame-pointer) echo -xregs=frameptr ;;
1844 -fPIC) echo -KPIC -xcode=pic32 ;;
1845 -W*,*) echo $flag ;;
1846 -f*-*|-W*) ;;
1847 *) echo $flag ;;
1848 esac
1849 done
1850 }
1851 fi
1852
1853 test -n "$cc_type" && enable $cc_type || echolog "Unknown C compiler $cc"
1854
1855 : ${as_default:=$cc}
1856 : ${dep_cc_default:=$cc}
1857 : ${ld_default:=$cc}
1858 set_default ar as dep_cc ld
1859
1860 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
1861 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
1862
1863 add_cflags $extra_cflags
1864 add_asflags $extra_cflags
1865
1866 if test -n "$sysroot"; then
1867 case "$cc_type" in
1868 gcc)
1869 add_cppflags --sysroot="$sysroot"
1870 add_ldflags --sysroot="$sysroot"
1871 ;;
1872 tms470)
1873 add_cppflags -I"$sysinclude"
1874 add_ldflags --sysroot="$sysroot"
1875 ;;
1876 clang)
1877 add_cppflags -isysroot "$sysroot"
1878 add_ldflags -isysroot "$sysroot"
1879 ;;
1880 esac
1881 fi
1882
1883 if test "$cpu" = host; then
1884 enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
1885
1886 case "$cc_type" in
1887 gcc)
1888 check_native(){
1889 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
1890 sed -n "/$1=/{
1891 s/.*$1=\\([^ ]*\\).*/\\1/
1892 p
1893 q
1894 }" $TMPE
1895 }
1896 cpu=$(check_native -march || check_native -mcpu)
1897 ;;
1898 esac
1899
1900 test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
1901 fi
1902
1903 # Deal with common $arch aliases
1904 case "$arch" in
1905 arm*)
1906 arch="arm"
1907 ;;
1908 mips|mipsel|IP*)
1909 arch="mips"
1910 ;;
1911 mips64*)
1912 arch="mips"
1913 subarch="mips64"
1914 ;;
1915 parisc|hppa)
1916 arch="parisc"
1917 ;;
1918 parisc64|hppa64)
1919 arch="parisc"
1920 subarch="parisc64"
1921 ;;
1922 "Power Macintosh"|ppc|powerpc)
1923 arch="ppc"
1924 ;;
1925 ppc64|powerpc64)
1926 arch="ppc"
1927 subarch="ppc64"
1928 ;;
1929 s390|s390x)
1930 arch="s390"
1931 ;;
1932 sh4|sh)
1933 arch="sh4"
1934 ;;
1935 sun4u|sparc64)
1936 arch="sparc"
1937 subarch="sparc64"
1938 ;;
1939 i[3-6]86|i86pc|BePC|x86_64|amd64)
1940 arch="x86"
1941 ;;
1942 esac
1943
1944 is_in $arch $ARCH_LIST || echo "WARNING: unknown arch $arch"
1945 enable $arch
1946
1947 # Add processor-specific flags
1948 if test "$cpu" = generic; then
1949 : do nothing
1950 elif enabled ppc; then
1951
1952 case $(tolower $cpu) in
1953 601|ppc601|powerpc601)
1954 cpuflags="-mcpu=601"
1955 disable altivec
1956 ;;
1957 603*|ppc603*|powerpc603*)
1958 cpuflags="-mcpu=603"
1959 disable altivec
1960 ;;
1961 604*|ppc604*|powerpc604*)
1962 cpuflags="-mcpu=604"
1963 disable altivec
1964 ;;
1965 g3|75*|ppc75*|powerpc75*)
1966 cpuflags="-mcpu=750 -mpowerpc-gfxopt"
1967 disable altivec
1968 ;;
1969 g4|745*|ppc745*|powerpc745*)
1970 cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
1971 ;;
1972 74*|ppc74*|powerpc74*)
1973 cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
1974 ;;
1975 g5|970|ppc970|powerpc970|power4*)
1976 cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
1977 ;;
1978 cell)
1979 cpuflags="-mcpu=cell"
1980 enable ldbrx
1981 ;;
1982 e500v2)
1983 cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
1984 disable altivec
1985 ;;
1986 e500)
1987 cpuflags="-mcpu=8540 -mhard-float"
1988 disable altivec
1989 ;;
1990 esac
1991
1992 elif enabled x86; then
1993
1994 case $cpu in
1995 i[345]86|pentium)
1996 cpuflags="-march=$cpu"
1997 disable mmx
1998 ;;
1999 # targets that do NOT support conditional mov (cmov)
2000 pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2001 cpuflags="-march=$cpu"
2002 disable cmov
2003 ;;
2004 # targets that do support conditional mov (cmov)
2005 i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64|k8|opteron|athlon-fx|core2|amdfam10)
2006 cpuflags="-march=$cpu"
2007 enable cmov
2008 enable fast_cmov
2009 ;;
2010 # targets that do support conditional mov but on which it's slow
2011 pentium4|pentium4m|prescott|nocona)
2012 cpuflags="-march=$cpu"
2013 enable cmov
2014 disable fast_cmov
2015 ;;
2016 esac
2017
2018 elif enabled sparc; then
2019
2020 case $cpu in
2021 niagara)
2022 cpuflags="-mcpu=$cpu"
2023 disable vis
2024 ;;
2025 sparc64)
2026 cpuflags="-mcpu=v9"
2027 ;;
2028 esac
2029
2030 elif enabled arm; then
2031
2032 case $cpu in
2033 armv*)
2034 cpuflags="-march=$cpu"
2035 ;;
2036 *)
2037 cpuflags="-mcpu=$cpu"
2038 ;;
2039 esac
2040
2041 elif enabled alpha; then
2042
2043 enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2044
2045 elif enabled bfin; then
2046
2047 cpuflags="-mcpu=$cpu"
2048
2049 elif enabled mips; then
2050
2051 cpuflags="-march=$cpu"
2052
2053 elif enabled avr32; then
2054
2055 case $cpu in
2056 ap7[02]0[0-2])
2057 subarch="avr32_ap"
2058 cpuflags="-mpart=$cpu"
2059 ;;
2060 ap)
2061 subarch="avr32_ap"
2062 cpuflags="-march=$cpu"
2063 ;;
2064 uc3[ab]*)
2065 subarch="avr32_uc"
2066 cpuflags="-mcpu=$cpu"
2067 ;;
2068 uc)
2069 subarch="avr32_uc"
2070 cpuflags="-march=$cpu"
2071 ;;
2072 esac
2073
2074 fi
2075
2076 add_cflags $cpuflags
2077 add_asflags $cpuflags
2078
2079 # compiler sanity check
2080 check_exec <<EOF
2081 int main(void){ return 0; }
2082 EOF
2083 if test "$?" != 0; then
2084 echo "$cc is unable to create an executable file."
2085 if test -z "$cross_prefix" && ! enabled cross_compile ; then
2086 echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2087 echo "Only do this if you know what cross compiling means."
2088 fi
2089 die "C compiler test failed."
2090 fi
2091
2092 add_cppflags -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112
2093 check_cflags -std=c99
2094 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2095 #include <stdlib.h>
2096 EOF
2097 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2098 #include <stdlib.h>
2099 EOF
2100
2101 check_host_cflags -std=c99
2102
2103 case "$arch" in
2104 alpha|ia64|mips|parisc|sparc)
2105 spic=$shared
2106 ;;
2107 x86)
2108 subarch="x86_32"
2109 check_cc <<EOF && subarch="x86_64"
2110 int test[(int)sizeof(char*) - 7];
2111 EOF
2112 if test "$subarch" = "x86_64"; then
2113 spic=$shared
2114 fi
2115 ;;
2116 esac
2117
2118 enable $subarch
2119 enabled spic && enable pic
2120
2121 # OS specific
2122 case $target_os in
2123 beos|haiku|zeta)
2124 prefix_default="$HOME/config"
2125 # 3 gcc releases known for BeOS, each with ugly bugs
2126 gcc_version="$($cc -v 2>&1 | grep version | cut -d ' ' -f3-)"
2127 case "$gcc_version" in
2128 2.9-beos-991026*|2.9-beos-000224*) echo "R5/GG gcc"
2129 disable mmx
2130 ;;
2131 *20010315*) echo "BeBits gcc"
2132 add_cflags -fno-expensive-optimizations
2133 ;;
2134 esac
2135 SHFLAGS=-nostart
2136 # enable BeOS things
2137 enable audio_beos
2138 # no need for libm, but the inet stuff
2139 # Check for BONE
2140 # XXX: actually should check for NOT net_server
2141 if echo $BEINCLUDES | grep -q 'headers/be/bone'; then
2142 network_extralibs="-lbind -lsocket"
2143 else
2144 enable beos_netserver
2145 network_extralibs="-lnet"
2146 fi ;;
2147 sunos)
2148 FFSERVERLDFLAGS=""
2149 SHFLAGS='-shared -Wl,-h,$$(@F)'
2150 enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2151 network_extralibs="-lsocket -lnsl"
2152 add_cppflags -D__EXTENSIONS__
2153 nm_opts='-P -g'
2154 ;;
2155 netbsd)
2156 oss_indev_extralibs="-lossaudio"
2157 oss_outdev_extralibs="-lossaudio"
2158 add_cppflags -D_XOPEN_SOURCE=600
2159 ;;
2160 openbsd)
2161 enable malloc_aligned
2162 # On OpenBSD 4.5. the compiler does not use PIC unless
2163 # explicitly using -fPIC. FFmpeg builds fine without PIC,
2164 # however the generated executable will not do anything
2165 # (simply quits with exit-code 1, no crash, no output).
2166 # Thus explicitly enable PIC here.
2167 enable pic
2168 SHFLAGS='-shared'
2169 oss_indev_extralibs="-lossaudio"
2170 oss_outdev_extralibs="-lossaudio"
2171 ;;
2172 freebsd|dragonfly)
2173 enable malloc_aligned
2174 ;;
2175 bsd/os)
2176 osextralibs="-lpoll -lgnugetopt"
2177 strip="strip -d"
2178 ;;
2179 darwin)
2180 enable malloc_aligned
2181 SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR) -Wl,-read_only_relocs,suppress'
2182 strip="strip -x"
2183 FFLDFLAGS="-Wl,-dynamic,-search_paths_first"
2184 SLIBSUF=".dylib"
2185 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2186 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2187 FFSERVERLDFLAGS=-Wl,-bind_at_load
2188 objformat="macho"
2189 enabled x86_64 && objformat="macho64"
2190 enabled_any pic shared ||
2191 { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2192 ;;
2193 mingw32*)
2194 if test $target_os = "mingw32ce"; then
2195 disable network
2196 else
2197 target_os=mingw32
2198 fi
2199 LIBTARGET=i386
2200 if enabled x86_64; then
2201 enable malloc_aligned
2202 LIBTARGET=x64
2203 elif enabled arm; then
2204 LIBTARGET=arm
2205 fi
2206 shlibdir_default="$bindir_default"
2207 disable ffserver
2208 SLIBPREF=""
2209 SLIBSUF=".dll"
2210 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2211 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2212 SLIB_EXTRA_CMD='-lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)'
2213 SLIB_INSTALL_EXTRA_CMD='-install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"; \
2214 install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)"; \
2215 install -d "$(LIBDIR)"; \
2216 install -m 644 $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) "$(LIBDIR)/lib$(SLIBNAME:$(SLIBSUF)=.dll.a)"'
2217 SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"'
2218 SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
2219 objformat="win32"
2220 enable dos_paths
2221 check_cflags -fno-common
2222 if ! enabled x86_64; then
2223 check_cpp_condition _mingw.h "(__MINGW32_MAJOR_VERSION > 3) || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2224 die "ERROR: MinGW runtime version must be >= 3.15."
2225 enabled_any avisynth vfwcap_indev &&
2226 { check_cpp_condition w32api.h "(__W32API_MAJOR_VERSION > 3) || (__W32API_MAJOR_VERSION == 3 && __W32API_MINOR_VERSION >= 13)" ||
2227 die "ERROR: avisynth and vfwcap_indev require w32api version 3.13 or later."; }
2228 fi
2229 ;;
2230 cygwin*)
2231 target_os=cygwin
2232 shlibdir_default="$bindir_default"
2233 SLIBPREF="cyg"
2234 SLIBSUF=".dll"
2235 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2236 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2237 SHFLAGS='-shared -Wl,--enable-auto-image-base'
2238 objformat="win32"
2239 enable dos_paths
2240 check_cflags -fno-common
2241 ;;
2242 *-dos|freedos|opendos)
2243 disable ffplay ffserver
2244 disable $INDEV_LIST $OUTDEV_LIST
2245 network_extralibs="-lsocket"
2246 objformat="coff"
2247 enable dos_paths
2248 ;;
2249 linux)
2250 enable dv1394
2251 ;;
2252 irix*)
2253 target_os=irix
2254 ranlib="echo ignoring ranlib"
2255 ;;
2256 os/2*)
2257 strip="lxlite"
2258 ln_s="cp -f"
2259 FFLDFLAGS="-Zomf -Zbin-files -Zargs-wild -Zmap"
2260 SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2261 FFSERVERLDFLAGS=""
2262 LIBSUF="_s.a"
2263 SLIBPREF=""
2264 SLIBSUF=".dll"
2265 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2266 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2267 SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2268 echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2269 echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2270 echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2271 echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2272 emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2273 SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2274 emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2275 SLIB_INSTALL_EXTRA_CMD='install -m 644 $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib "$(LIBDIR)"'
2276 SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.a "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.lib'
2277 enable dos_paths
2278 ;;
2279 gnu/kfreebsd)
2280 ;;
2281 gnu)
2282 ;;
2283 none)
2284 ;;
2285 *)
2286 die "Unknown OS '$target_os'."
2287 ;;
2288 esac
2289
2290 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2291
2292 set_default $PATHS_LIST
2293
2294 add_extralibs $osextralibs
2295
2296 # Combine FFLDFLAGS and the LDFLAGS environment variable.
2297 LDFLAGS="$FFLDFLAGS $LDFLAGS"
2298
2299 # we need to build at least one lib type
2300 if ! enabled_any static shared; then
2301 cat <<EOF
2302 At least one library type must be built.
2303 Specify --enable-static to build the static libraries or --enable-shared to
2304 build the shared libraries as well. To only build the shared libraries specify
2305 --disable-static in addition to --enable-shared.
2306 EOF
2307 exit 1;
2308 fi
2309
2310 disabled static && LIBNAME=""
2311
2312 if enabled_any libfaad libfaadbin ; then
2313 if check_header faad.h; then
2314 check_cc <<EOF
2315 #include <faad.h>
2316 #ifndef FAAD2_VERSION
2317 ok faad1
2318 #endif
2319 int main(void) { return 0; }
2320 EOF
2321 test $? = 0 && enable libfaad2
2322 else
2323 die "FAAD test failed."
2324 fi
2325 fi
2326
2327
2328 die_license_disabled() {
2329 enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2330 }
2331
2332 die_license_disabled gpl libfaad2
2333 die_license_disabled gpl libx264
2334 die_license_disabled gpl libxvid
2335 die_license_disabled gpl postproc
2336 die_license_disabled gpl x11grab
2337
2338 die_license_disabled nonfree libfaac
2339
2340 die_license_disabled version3 libopencore_amrnb
2341 die_license_disabled version3 libopencore_amrwb
2342
2343 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2344
2345 check_deps $ARCH_EXT_LIST
2346
2347 disabled optimizations || check_cflags -fomit-frame-pointer
2348
2349 enable_pic() {
2350 enable pic
2351 add_cppflags -DPIC
2352 add_cflags -fPIC
2353 add_asflags -fPIC
2354 }
2355
2356 enabled pic && enable_pic
2357
2358 check_cc <<EOF || die "Symbol mangling check failed."
2359 int ff_extern;
2360 EOF
2361 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2362 extern_prefix=${sym%%ff_extern*}
2363
2364 check_cc <<EOF && enable inline_asm
2365 void foo(void) { __asm__ volatile ("" ::); }
2366 EOF
2367
2368 _restrict=
2369 for restrict_keyword in restrict __restrict__ __restrict; do
2370 check_cc <<EOF && _restrict=$restrict_keyword && break
2371 void foo(char * $restrict_keyword p);
2372 EOF
2373 done
2374
2375 check_cc <<EOF && enable attribute_packed
2376 struct { int x; } __attribute__((packed)) x;
2377 EOF
2378
2379 check_cc <<EOF && enable attribute_may_alias
2380 union { int x; } __attribute__((may_alias)) x;
2381 EOF
2382
2383 check_cc <<EOF || die "endian test failed"
2384 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2385 EOF
2386 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2387
2388 if enabled alpha; then
2389
2390 check_cflags -mieee
2391
2392 elif enabled arm; then
2393
2394 check_cflags -marm
2395
2396 check_ld <<EOF && enable vfp_args
2397 __asm__ (".eabi_attribute 28, 1");
2398 int main(void) { return 0; }
2399 EOF
2400
2401 # We have to check if pld is a nop and disable it.
2402 check_asm pld '"pld [r0]"'
2403
2404 enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2405 enabled armv6 && check_asm armv6 '"sadd16 r0, r0, r0"'
2406 enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2407 enabled armvfp && check_asm armvfp '"fadds s0, s0, s0"'
2408 enabled iwmmxt && check_asm iwmmxt '"wunpckelub wr6, wr4"'
2409 enabled neon && check_asm neon '"vadd.i16 q0, q0, q0"'
2410
2411 enabled_all armv6t2 shared !pic && enable_pic
2412
2413 elif enabled ia64; then
2414
2415 # HACK: currently fails to build if .bss is > 4MB and shared libs are built
2416 enabled shared && enable_weak hardcoded_tables
2417
2418 elif enabled mips; then
2419
2420 check_asm loongson '"dmult.g $1, $2, $3"'
2421 enabled mmi && check_asm mmi '"lq $2, 0($2)"'
2422
2423 elif enabled ppc; then
2424
2425 enable local_aligned_8 local_aligned_16
2426
2427 check_asm dcbzl '"dcbzl 0, 1"'
2428 check_asm ppc4xx '"maclhw r10, r11, r12"'
2429 check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2430
2431 # AltiVec flags: The FSF version of GCC differs from the Apple version
2432 if enabled altivec; then
2433 check_cflags -maltivec -mabi=altivec &&
2434 { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2435 check_cflags -faltivec
2436
2437 # check if our compiler supports Motorola AltiVec C API
2438 check_cc <<EOF || disable altivec
2439 $inc_altivec_h
2440 int main(void) {
2441 vector signed int v1, v2, v3;
2442 v1 = vec_add(v2,v3);
2443 return 0;
2444 }
2445 EOF
2446
2447 # check if our compiler supports braces for vector declarations
2448 check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2449 $inc_altivec_h
2450 int main (void) { (vector int) {1}; return 0; }
2451 EOF
2452 fi
2453
2454 elif enabled sparc; then
2455
2456 enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2457 add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2458
2459 elif enabled x86; then
2460
2461 enable local_aligned_8 local_aligned_16
2462
2463 # check whether EBP is available on x86
2464 # As 'i' is stored on the stack, this program will crash
2465 # if the base pointer is used to access it because the
2466 # base pointer is cleared in the inline assembly code.
2467 check_exec_crash <<EOF && enable ebp_available
2468 volatile int i=0;
2469 __asm__ volatile (
2470 "xorl %%ebp, %%ebp"
2471 ::: "%ebp");
2472 return i;
2473 EOF
2474
2475 # check whether EBX is available on x86
2476 check_asm ebx_available '""::"b"(0)' &&
2477 check_asm ebx_available '"":::"%ebx"'
2478
2479 # check whether more than 10 operands are supported
2480 check_cc <<EOF && enable ten_operands
2481 int main(void) {
2482 int x=0;
2483 __asm__ volatile(
2484 ""
2485 :"+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x)
2486 );
2487 return 0;
2488 }
2489 EOF
2490
2491 # check whether binutils is new enough to compile SSSE3/MMX2
2492 enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2493 enabled mmx2 && check_asm mmx2 '"pmaxub %mm0, %mm1"'
2494
2495 check_asm bswap '"bswap %%eax" ::: "%eax"'
2496
2497 YASMFLAGS="-f $objformat -DARCH_$(toupper $subarch)"
2498 enabled x86_64 && append YASMFLAGS "-m amd64"
2499 enabled pic && append YASMFLAGS "-DPIC"
2500 test -n "$extern_prefix" && append YASMFLAGS "-DPREFIX"
2501 case "$objformat" in
2502 elf) enabled debug && append YASMFLAGS "-g dwarf2" ;;
2503 esac
2504 disabled yasm || { check_yasm "pabsw xmm0, xmm0" && enable yasm; }
2505
2506 case "$cpu" in
2507 athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2508 disable fast_clz
2509 ;;
2510 esac
2511
2512 fi
2513
2514 if check_func dlopen; then
2515 ldl=
2516 elif check_func dlopen -ldl; then
2517 ldl=-ldl
2518 fi
2519
2520 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2521 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2522
2523 check_func fork
2524 check_func getaddrinfo $network_extralibs
2525 check_func gethrtime
2526 check_func getrusage
2527 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2528 check_func inet_aton $network_extralibs
2529 check_func isatty
2530 check_func ${malloc_prefix}memalign && enable memalign
2531 check_func mkstemp
2532 check_func ${malloc_prefix}posix_memalign && enable posix_memalign
2533 check_func setrlimit
2534 check_func strerror_r
2535 check_func_headers io.h setmode
2536 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2537 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2538 check_func_headers windows.h GetProcessTimes
2539 check_func_headers windows.h VirtualAlloc
2540
2541 check_header conio.h
2542 check_header dlfcn.h
2543 check_header dxva2api.h
2544 check_header malloc.h
2545 check_header poll.h
2546 check_header sys/mman.h
2547 check_header sys/resource.h
2548 check_header sys/select.h
2549 check_header termios.h
2550 check_header vdpau/vdpau.h
2551 check_header vdpau/vdpau_x11.h
2552 check_header X11/extensions/XvMClib.h
2553
2554 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2555
2556 if ! enabled_any memalign memalign_hack posix_memalign malloc_aligned &&
2557 enabled_any $need_memalign ; then
2558 die "Error, no aligned memory allocator but SSE enabled, disable it or use --enable-memalign-hack."
2559 fi
2560
2561 disabled zlib || check_lib zlib.h zlibVersion -lz || disable zlib
2562 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2563
2564 # check for some common methods of building with pthread support
2565 # do this before the optional library checks as some of them require pthreads
2566 if enabled pthreads; then
2567 if check_func pthread_create; then
2568 :
2569 elif check_func pthread_create -pthread; then
2570 add_cflags -pthread
2571 add_extralibs -pthread
2572 elif check_func pthread_create -pthreads; then
2573 add_cflags -pthreads
2574 add_extralibs -pthreads
2575 elif check_func pthread_create -lpthreadGC2; then
2576 add_extralibs -lpthreadGC2
2577 elif ! check_lib pthread.h pthread_create -lpthread; then
2578 die "ERROR: can't find pthreads library"
2579 fi
2580 fi
2581
2582 for thread in $THREADS_LIST; do
2583 if enabled $thread; then
2584 test -n "$thread_type" &&
2585 die "ERROR: Only one thread type must be selected." ||
2586 thread_type="$thread"
2587 fi
2588 done
2589
2590 check_lib math.h sin -lm
2591 check_lib va/va.h vaInitialize -lva
2592
2593 check_mathfunc exp2
2594 check_mathfunc exp2f
2595 check_mathfunc llrint
2596 check_mathfunc llrintf
2597 check_mathfunc log2
2598 check_mathfunc log2f
2599 check_mathfunc lrint
2600 check_mathfunc lrintf
2601 check_mathfunc round
2602 check_mathfunc roundf
2603 check_mathfunc truncf
2604
2605 # these are off by default, so fail if requested and not available
2606 enabled avisynth && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2607 enabled libdirac && add_cflags $(pkg-config --cflags dirac) &&
2608 require libdirac libdirac_decoder/dirac_parser.h dirac_decoder_init $(pkg-config --libs dirac) &&
2609 require libdirac libdirac_encoder/dirac_encoder.h dirac_encoder_init $(pkg-config --libs dirac)
2610 enabled libfaac && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2611 enabled libfaad && require2 libfaad faad.h faacDecOpen -lfaad
2612 enabled libgsm && require libgsm gsm/gsm.h gsm_create -lgsm
2613 enabled libmp3lame && require libmp3lame lame/lame.h lame_init -lmp3lame -lm
2614 enabled libnut && require libnut libnut.h nut_demuxer_init -lnut
2615 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb -lm
2616 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb -lm
2617 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2618 enabled librtmp && require librtmp librtmp/rtmp.h RTMP_Init -lrtmp
2619 enabled libschroedinger && add_cflags $(pkg-config --cflags schroedinger-1.0) &&
2620 require libschroedinger schroedinger/schro.h schro_init $(pkg-config --libs schroedinger-1.0)
2621 enabled libspeex && require libspeex speex/speex.h speex_decoder_init -lspeex
2622 enabled libtheora && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2623 enabled libvorbis && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2624 enabled libx264 && require libx264 x264.h x264_encoder_encode -lx264 -lm &&
2625 { check_cpp_condition x264.h "X264_BUILD >= 90" ||
2626 die "ERROR: libx264 version must be >= 0.90."; }
2627 enabled libxvid && require libxvid xvid.h xvid_global -lxvidcore
2628 enabled mlib && require mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
2629
2630 # libdc1394 check
2631 if enabled libdc1394; then
2632 { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2633 enable libdc1394_2; } ||
2634 { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
2635 enable libdc1394_1; } ||
2636 die "ERROR: No version of libdc1394 found "
2637 fi
2638
2639 SDL_CONFIG="${cross_prefix}sdl-config"
2640 if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
2641 sdl_cflags=$("${SDL_CONFIG}" --cflags)
2642 sdl_libs=$("${SDL_CONFIG}" --libs)
2643 check_func_headers SDL.h SDL_Init $sdl_cflags $sdl_libs &&
2644 check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2645 enable sdl &&
2646 check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2647 fi
2648
2649 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2650
2651 if enabled network; then
2652 check_type "sys/types.h sys/socket.h" socklen_t
2653 check_type netdb.h "struct addrinfo"
2654 check_type netinet/in.h "struct ipv6_mreq"
2655 check_type netinet/in.h "struct sockaddr_in6"
2656 check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2657 check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2658 # Prefer arpa/inet.h over winsock2
2659 if check_header arpa/inet.h ; then
2660 check_func closesocket
2661 elif check_header winsock2.h ; then
2662 check_func_headers winsock2.h closesocket -lws2 && \
2663 network_extralibs="-lws2" || \
2664 { check_func_headers winsock2.h closesocket -lws2_32 && \
2665 network_extralibs="-lws2_32"; }
2666 check_type ws2tcpip.h socklen_t
2667 check_type ws2tcpip.h "struct addrinfo"
2668 check_type ws2tcpip.h "struct ipv6_mreq"
2669 check_type ws2tcpip.h "struct sockaddr_in6"
2670 check_type ws2tcpip.h "struct sockaddr_storage"
2671 check_struct winsock2.h "struct sockaddr" sa_len
2672 else
2673 disable network
2674 fi
2675 fi
2676
2677 check_header linux/videodev.h
2678 check_header linux/videodev2.h
2679 check_header sys/videoio.h
2680
2681 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2682
2683 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2684 { check_header dev/bktr/ioctl_meteor.h &&
2685 check_header dev/bktr/ioctl_bt848.h; } ||
2686 { check_header machine/ioctl_meteor.h &&
2687 check_header machine/ioctl_bt848.h; } ||
2688 { check_header dev/video/meteor/ioctl_meteor.h &&
2689 check_header dev/video/bktr/ioctl_bt848.h; } ||
2690 check_header dev/ic/bt8xx.h
2691
2692 check_header sys/soundcard.h
2693 check_header soundcard.h
2694
2695 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
2696
2697 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack
2698
2699 enabled x11grab &&
2700 check_header X11/Xlib.h &&
2701 check_header X11/extensions/XShm.h &&
2702 check_header X11/extensions/Xfixes.h &&
2703 check_func XOpenDisplay -lX11 &&
2704 check_func XShmCreateImage -lX11 -lXext &&
2705 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
2706
2707 if ! disabled vdpau && enabled vdpau_vdpau_h; then
2708 check_cpp_condition \
2709 vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
2710 { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
2711 disable vdpau; }
2712 fi
2713
2714 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
2715
2716 # add some useful compiler flags if supported
2717 check_cflags -Wdeclaration-after-statement
2718 check_cflags -Wall
2719 check_cflags -Wno-switch
2720 check_cflags -Wdisabled-optimization
2721 check_cflags -Wpointer-arith
2722 check_cflags -Wredundant-decls
2723 check_cflags -Wno-pointer-sign
2724 check_cflags -Wcast-qual
2725 check_cflags -Wwrite-strings
2726 check_cflags -Wtype-limits
2727 check_cflags -Wundef
2728 check_cflags -Wmissing-prototypes
2729 enabled extra_warnings && check_cflags -Winline
2730
2731 # add some linker flags
2732 check_ldflags -Wl,--warn-common
2733 check_ldflags -Wl,--as-needed
2734 check_ldflags '-Wl,-rpath-link,\$(BUILD_ROOT)/libpostproc -Wl,-rpath-link,\$(BUILD_ROOT)/libswscale -Wl,-rpath-link,\$(BUILD_ROOT)/libavfilter -Wl,-rpath-link,\$(BUILD_ROOT)/libavdevice -Wl,-rpath-link,\$(BUILD_ROOT)/libavformat -Wl,-rpath-link,\$(BUILD_ROOT)/libavcodec -Wl,-rpath-link,\$(BUILD_ROOT)/libavutil'
2735 check_ldflags -Wl,-Bsymbolic
2736
2737 echo "X{};" > $TMPV
2738 test_ldflags -Wl,--version-script,$TMPV &&
2739 append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
2740
2741 if enabled small; then
2742 add_cflags $size_cflags
2743 optimizations="small"
2744 elif enabled optimizations; then
2745 add_cflags $speed_cflags
2746 else
2747 add_cflags $noopt_cflags
2748 fi
2749 check_cflags -fno-math-errno
2750 check_cflags -fno-signed-zeros
2751
2752 if enabled icc; then
2753 # Just warnings, no remarks
2754 check_cflags -w1
2755 # -wd: Disable following warnings
2756 # 144, 167, 556: -Wno-pointer-sign
2757 # 10006: ignoring unknown option -fno-signed-zeros
2758 # 10156: ignoring option '-W'; no argument required
2759 check_cflags -wd144,167,556,10006,10156
2760 # 11030: Warning unknown option --as-needed
2761 # 10156: ignoring option '-export'; no argument required
2762 check_ldflags -wd10156,11030
2763 # Allow to compile with optimizations
2764 check_ldflags -march=$cpu
2765 # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
2766 enable ebp_available
2767 elif enabled ccc; then
2768 # disable some annoying warnings
2769 add_cflags -msg_disable cvtu32to64
2770 add_cflags -msg_disable embedcomment
2771 add_cflags -msg_disable needconstext
2772 add_cflags -msg_disable nomainieee
2773 add_cflags -msg_disable ptrmismatch1
2774 add_cflags -msg_disable unreachcode
2775 elif enabled gcc; then
2776 check_cflags -fno-tree-vectorize
2777 check_cflags -Werror=implicit
2778 check_cflags -Werror=missing-prototypes
2779 elif enabled clang; then
2780 check_cflags -Qunused-arguments
2781 elif enabled armcc; then
2782 # 2523: use of inline assembler is deprecated
2783 add_cflags -Wrvct,--diag_suppress=2523
2784 add_cflags -Wrvct,--diag_suppress=1207
2785 elif enabled tms470; then
2786 add_cflags -pds=824 -pds=837
2787 fi
2788
2789 if enabled gprof; then
2790 add_cflags -p
2791 add_ldflags -p
2792 fi
2793
2794 # Find out if the .align argument is a power of two or not.
2795 check_asm asmalign_pot '".align 3"'
2796
2797 enabled_any $THREADS_LIST && enable threads
2798
2799 check_deps $CONFIG_LIST \
2800 $CONFIG_EXTRA \
2801 $HAVE_LIST \
2802 $DECODER_LIST \
2803 $ENCODER_LIST \
2804 $HWACCEL_LIST \
2805 $PARSER_LIST \
2806 $BSF_LIST \
2807 $DEMUXER_LIST \
2808 $MUXER_LIST \
2809 $FILTER_LIST \
2810 $INDEV_LIST \
2811 $OUTDEV_LIST \
2812 $PROTOCOL_LIST \
2813
2814 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
2815
2816 echo "install prefix $prefix"
2817 echo "source path $source_path"
2818 echo "C compiler $cc"
2819 echo ".align is power-of-two $asmalign_pot"
2820 echo "ARCH $arch ($cpu)"
2821 if test "$build_suffix" != ""; then
2822 echo "build suffix $build_suffix"
2823 fi
2824 if test "$extra_version" != ""; then
2825 echo "version string suffix $extra_version"
2826 fi
2827 echo "big-endian ${bigendian-no}"
2828 echo "runtime cpu detection ${runtime_cpudetect-no}"
2829 if enabled x86; then
2830 echo "yasm ${yasm-no}"
2831 echo "MMX enabled ${mmx-no}"
2832 echo "MMX2 enabled ${mmx2-no}"
2833 echo "3DNow! enabled ${amd3dnow-no}"
2834 echo "3DNow! extended enabled ${amd3dnowext-no}"
2835 echo "SSE enabled ${sse-no}"
2836 echo "SSSE3 enabled ${ssse3-no}"
2837 echo "CMOV enabled ${cmov-no}"
2838 echo "CMOV is fast ${fast_cmov-no}"
2839 echo "EBX available ${ebx_available-no}"
2840 echo "EBP available ${ebp_available-no}"
2841 echo "10 operands supported ${ten_operands-no}"
2842 fi
2843 if enabled arm; then
2844 echo "ARMv5TE enabled ${armv5te-no}"
2845 echo "ARMv6 enabled ${armv6-no}"
2846 echo "ARMv6T2 enabled ${armv6t2-no}"
2847 echo "ARM VFP enabled ${armvfp-no}"
2848 echo "IWMMXT enabled ${iwmmxt-no}"
2849 echo "NEON enabled ${neon-no}"
2850 fi
2851 if enabled mips; then
2852 echo "MMI enabled ${mmi-no}"
2853 fi
2854 if enabled ppc; then
2855 echo "AltiVec enabled ${altivec-no}"
2856 echo "PPC 4xx optimizations ${ppc4xx-no}"
2857 echo "dcbzl available ${dcbzl-no}"
2858 echo "performance report ${powerpc_perf-no}"
2859 fi
2860 if enabled sparc; then
2861 echo "VIS enabled ${vis-no}"
2862 fi
2863 echo "gprof enabled ${gprof-no}"
2864 echo "debug symbols ${debug-no}"
2865 echo "strip symbols ${stripping-no}"
2866 echo "optimizations ${optimizations-no}"
2867 echo "static ${static-no}"
2868 echo "shared ${shared-no}"
2869 echo "postprocessing support ${postproc-no}"
2870 echo "new filter support ${avfilter-no}"
2871 echo "filters using lavformat ${avfilter_lavf-no}"
2872 echo "network support ${network-no}"
2873 echo "threading support ${thread_type-no}"
2874 echo "SDL support ${sdl-no}"
2875 echo "Sun medialib support ${mlib-no}"
2876 echo "AVISynth enabled ${avisynth-no}"
2877 echo "libdc1394 support ${libdc1394-no}"
2878 echo "libdirac enabled ${libdirac-no}"
2879 echo "libfaac enabled ${libfaac-no}"
2880 echo "libfaad enabled ${libfaad-no}"
2881 echo "libfaad dlopened ${libfaadbin-no}"
2882 echo "libgsm enabled ${libgsm-no}"
2883 echo "libmp3lame enabled ${libmp3lame-no}"
2884 echo "libnut enabled ${libnut-no}"
2885 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
2886 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
2887 echo "libopenjpeg enabled ${libopenjpeg-no}"
2888 echo "librtmp enabled ${librtmp-no}"
2889 echo "libschroedinger enabled ${libschroedinger-no}"
2890 echo "libspeex enabled ${libspeex-no}"
2891 echo "libtheora enabled ${libtheora-no}"
2892 echo "libvorbis enabled ${libvorbis-no}"
2893 echo "libx264 enabled ${libx264-no}"
2894 echo "libxvid enabled ${libxvid-no}"
2895 echo "zlib enabled ${zlib-no}"
2896 echo "bzlib enabled ${bzlib-no}"
2897 echo
2898
2899 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
2900 echo "Enabled ${type}s:"
2901 eval list=\$$(toupper $type)_LIST
2902 for part in $list; do
2903 enabled $part && echo ${part%_*}
2904 done | sort | pr -3 -t
2905 echo
2906 done
2907
2908 license="LGPL version 2.1 or later"
2909 if enabled nonfree; then
2910 license="nonfree and unredistributable"
2911 elif enabled gplv3; then
2912 license="GPL version 3 or later"
2913 elif enabled lgplv3; then
2914 license="LGPL version 3 or later"
2915 elif enabled gpl; then
2916 license="GPL version 2 or later"
2917 fi
2918
2919 echo "License: $license"
2920
2921 echo "Creating config.mak and config.h..."
2922
2923 # build tree in object directory if source path is different from current one
2924 if enabled source_path_used; then
2925 DIRS="
2926 doc
2927 libavcodec
2928 libavcodec/$arch
2929 libavdevice
2930 libavfilter
2931 libavformat
2932 libavutil
2933 libavutil/$arch
2934 libpostproc
2935 libswscale
2936 libswscale/$arch
2937 tests
2938 tools
2939 "
2940 FILES="
2941 Makefile
2942 common.mak
2943 subdir.mak
2944 doc/texi2pod.pl
2945 libavcodec/Makefile
2946 libavcodec/${arch}/Makefile
2947 libavdevice/Makefile
2948 libavfilter/Makefile
2949 libavformat/Makefile
2950 libavutil/Makefile
2951 libpostproc/Makefile
2952 libswscale/Makefile
2953 "
2954 map 'mkdir -p $v' $DIRS;
2955 map 'test -f "$source_path/$v" && $ln_s "$source_path/$v" $v' $FILES
2956 fi
2957
2958 enabled stripping || strip="echo skipping strip"
2959
2960 cat > config.mak <<EOF
2961 # Automatically generated by configure - do not modify!
2962 ifndef FFMPEG_CONFIG_MAK
2963 FFMPEG_CONFIG_MAK=1
2964 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
2965 prefix=$prefix
2966 LIBDIR=\$(DESTDIR)$libdir
2967 SHLIBDIR=\$(DESTDIR)$shlibdir
2968 INCDIR=\$(DESTDIR)$incdir
2969 BINDIR=\$(DESTDIR)$bindir
2970 DATADIR=\$(DESTDIR)$datadir
2971 MANDIR=\$(DESTDIR)$mandir
2972 SRC_PATH="$source_path"
2973 SRC_PATH_BARE=$source_path
2974 BUILD_ROOT="$PWD"
2975 ARCH=$arch
2976 CC=$cc
2977 AS=$as
2978 LD=$ld
2979 DEPCC=$dep_cc
2980 YASM=$yasmexe
2981 YASMDEP=$yasmexe
2982 AR=$ar
2983 RANLIB=$ranlib
2984 CP=cp -p
2985 LN_S=$ln_s
2986 STRIP=$strip
2987 CPPFLAGS=$CPPFLAGS
2988 CFLAGS=$CFLAGS
2989 ASFLAGS=$ASFLAGS
2990 CC_O=$CC_O
2991 LDFLAGS=$LDFLAGS
2992 FFSERVERLDFLAGS=$FFSERVERLDFLAGS
2993 SHFLAGS=$SHFLAGS
2994 YASMFLAGS=$YASMFLAGS
2995 BUILDSUF=$build_suffix
2996 FULLNAME=$FULLNAME
2997 LIBPREF=$LIBPREF
2998 LIBSUF=$LIBSUF
2999 LIBNAME=$LIBNAME
3000 SLIBPREF=$SLIBPREF
3001 SLIBSUF=$SLIBSUF
3002 EXESUF=$EXESUF
3003 EXTRA_VERSION=$extra_version
3004 DEPFLAGS=$DEPFLAGS
3005 CCDEP=$CCDEP
3006 ASDEP=$ASDEP
3007 CC_DEPFLAGS=$CC_DEPFLAGS
3008 AS_DEPFLAGS=$AS_DEPFLAGS
3009 HOSTCC=$host_cc
3010 HOSTCFLAGS=$host_cflags
3011 HOSTEXESUF=$HOSTEXESUF
3012 HOSTLDFLAGS=$host_ldflags
3013 HOSTLIBS=$host_libs
3014 TARGET_EXEC=$target_exec
3015 TARGET_PATH=$target_path
3016 SDL_LIBS=$sdl_libs
3017 SDL_CFLAGS=$sdl_cflags
3018 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3019 EXTRALIBS=$extralibs
3020 INSTALL=install
3021 LIBTARGET=${LIBTARGET}
3022 SLIBNAME=${SLIBNAME}
3023 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3024 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3025 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3026 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3027 SLIB_INSTALL_EXTRA_CMD=${SLIB_INSTALL_EXTRA_CMD}
3028 SLIB_UNINSTALL_EXTRA_CMD=${SLIB_UNINSTALL_EXTRA_CMD}
3029 SAMPLES=$samples
3030 EOF
3031
3032 get_version(){
3033 name=$1
3034 file=$source_path/$2
3035 eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3036 eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3037 lcname=$(tolower $name)
3038 eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3039 eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3040 }
3041
3042 get_version LIBSWSCALE libswscale/swscale.h
3043 get_version LIBPOSTPROC libpostproc/postprocess.h
3044 get_version LIBAVCODEC libavcodec/avcodec.h
3045 get_version LIBAVDEVICE libavdevice/avdevice.h
3046 get_version LIBAVFORMAT libavformat/avformat.h
3047 get_version LIBAVUTIL libavutil/avutil.h
3048 get_version LIBAVFILTER libavfilter/avfilter.h
3049
3050 enabled asmalign_pot || align_shift="1 <<"
3051
3052 cat > $TMPH <<EOF
3053 /* Automatically generated by configure - do not modify! */
3054 #ifndef FFMPEG_CONFIG_H
3055 #define FFMPEG_CONFIG_H
3056 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
3057 #define FFMPEG_LICENSE "$(c_escape $license)"
3058 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
3059 #define CC_TYPE "$cc_type"
3060 #define CC_VERSION $cc_version
3061 #define restrict $_restrict
3062 #define ASMALIGN(ZEROBITS) ".align $align_shift " #ZEROBITS "\\n\\t"
3063 #define EXTERN_PREFIX "${extern_prefix}"
3064 #define EXTERN_ASM ${extern_prefix}
3065 EOF
3066
3067 test -n "$malloc_prefix" &&
3068 echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3069
3070 if enabled small || disabled optimizations; then
3071 echo "#undef av_always_inline" >> $TMPH
3072 echo "#define av_always_inline" >> $TMPH
3073 fi
3074
3075 print_config ARCH_ $TMPH config.mak $ARCH_LIST
3076 print_config HAVE_ $TMPH config.mak $HAVE_LIST
3077 print_config CONFIG_ $TMPH config.mak $CONFIG_LIST \
3078 $CONFIG_EXTRA \
3079 $DECODER_LIST \
3080 $ENCODER_LIST \
3081 $HWACCEL_LIST \
3082 $PARSER_LIST \
3083 $BSF_LIST \
3084 $DEMUXER_LIST \
3085 $MUXER_LIST \
3086 $FILTER_LIST \
3087 $PROTOCOL_LIST \
3088 $INDEV_LIST \
3089 $OUTDEV_LIST \
3090
3091 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
3092 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
3093
3094 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3095 cp_if_changed $TMPH config.h
3096
3097 cat > $TMPH <<EOF
3098 /* Generated by ffconf */
3099 #ifndef AVUTIL_AVCONFIG_H
3100 #define AVUTIL_AVCONFIG_H
3101 EOF
3102
3103 print_config AV_HAVE_ $TMPH /dev/null $HAVE_LIST_PUB
3104
3105 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3106
3107 cp_if_changed $TMPH libavutil/avconfig.h
3108
3109 # build pkg-config files
3110
3111 pkgconfig_generate(){
3112 name=$1
3113 shortname=${name#lib}${build_suffix}
3114 comment=$2
3115 version=$3
3116 libs=$4
3117 requires=$5
3118 cat <<EOF > $name/$name.pc
3119 prefix=$prefix
3120 exec_prefix=\${prefix}
3121 libdir=$libdir
3122 includedir=$incdir
3123
3124 Name: $name
3125 Description: $comment
3126 Version: $version
3127 Requires: $(enabled shared || echo $requires)
3128 Requires.private: $(enabled shared && echo $requires)
3129 Conflicts:
3130 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3131 Libs.private: $(enabled shared && echo $libs)
3132 Cflags: -I\${includedir}
3133 EOF
3134 cat <<EOF > $name/$name-uninstalled.pc
3135 prefix=
3136 exec_prefix=
3137 libdir=\${pcfiledir}
3138 includedir=${source_path}
3139
3140 Name: $name
3141 Description: $comment
3142 Version: $version
3143 Requires: $requires
3144 Conflicts:
3145 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3146 Cflags: -I\${includedir}
3147 EOF
3148 }
3149
3150 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION"
3151 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3152 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3153 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3154 enabled avfilter &&
3155 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3156 enabled postproc &&
3157 pkgconfig_generate libpostproc "FFmpeg post processing library" "$LIBPOSTPROC_VERSION"
3158 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"