Use .p2align in ASMALIGN() macro
[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 --disable-avfilter disable 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-libvpx enable VP8 support via libvpx [no]
187 --enable-libx264 enable H.264 encoding via x264 [no]
188 --enable-libxvid enable Xvid encoding via xvidcore,
189 native MPEG-4/Xvid encoder exists [no]
190 --enable-mlib enable Sun medialib [no]
191 --enable-zlib enable zlib [autodetect]
192
193 Advanced options (experts only):
194 --source-path=PATH path to source code [$source_path]
195 --cross-prefix=PREFIX use PREFIX for compilation tools [$cross_prefix]
196 --enable-cross-compile assume a cross-compiler is used
197 --sysroot=PATH root of cross-build tree
198 --sysinclude=PATH location of cross-build system headers
199 --target-os=OS compiler targets OS [$target_os]
200 --target-exec=CMD command to run executables on target
201 --target-path=DIR path to view of build directory on target
202 --nm=NM use nm tool
203 --ar=AR use archive tool AR [$ar_default]
204 --as=AS use assembler AS [$as_default]
205 --cc=CC use C compiler CC [$cc_default]
206 --ld=LD use linker LD
207 --host-cc=HOSTCC use host C compiler HOSTCC
208 --host-cflags=HCFLAGS use HCFLAGS when compiling for host
209 --host-ldflags=HLDFLAGS use HLDFLAGS when linking for host
210 --host-libs=HLIBS use libs HLIBS when linking for host
211 --extra-cflags=ECFLAGS add ECFLAGS to CFLAGS [$CFLAGS]
212 --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
213 --extra-libs=ELIBS add ELIBS [$ELIBS]
214 --extra-version=STRING version string suffix []
215 --build-suffix=SUFFIX library name suffix []
216 --arch=ARCH select architecture [$arch]
217 --cpu=CPU select the minimum required CPU (affects
218 instruction selection, may crash on older CPUs)
219 --enable-powerpc-perf enable performance report on PPC
220 (requires enabling PMC)
221 --disable-asm disable all assembler optimizations
222 --disable-altivec disable AltiVec optimizations
223 --disable-amd3dnow disable 3DNow! optimizations
224 --disable-amd3dnowext disable 3DNow! extended optimizations
225 --disable-mmx disable MMX optimizations
226 --disable-mmx2 disable MMX2 optimizations
227 --disable-sse disable SSE optimizations
228 --disable-ssse3 disable SSSE3 optimizations
229 --disable-armv5te disable armv5te optimizations
230 --disable-armv6 disable armv6 optimizations
231 --disable-armv6t2 disable armv6t2 optimizations
232 --disable-armvfp disable ARM VFP optimizations
233 --disable-iwmmxt disable iwmmxt optimizations
234 --disable-mmi disable MMI optimizations
235 --disable-neon disable neon optimizations
236 --disable-vis disable VIS optimizations
237 --disable-yasm disable use of yasm assembler
238 --enable-pic build position-independent code
239 --malloc-prefix=PFX prefix malloc and related names with PFX
240 --enable-sram allow use of on-chip SRAM
241
242 Developer options (useful when working on FFmpeg itself):
243 --disable-debug disable debugging symbols
244 --enable-debug=LEVEL set the debug level [$debuglevel]
245 --enable-gprof enable profiling with gprof [$gprof]
246 --disable-optimizations disable compiler optimizations
247 --enable-extra-warnings enable more compiler warnings
248 --disable-stripping disable stripping of executables and shared libraries
249 --samples=PATH location of test samples for FATE
250
251 NOTE: Object files are built at the place where configure is launched.
252 EOF
253 exit 0
254 }
255
256 log(){
257 echo "$@" >> $logfile
258 }
259
260 log_file(){
261 log BEGIN $1
262 pr -n -t $1 >> $logfile
263 log END $1
264 }
265
266 echolog(){
267 log "$@"
268 echo "$@"
269 }
270
271 die(){
272 echolog "$@"
273 cat <<EOF
274
275 If you think configure made a mistake, make sure you are using the latest
276 version from SVN. If the latest version fails, report the problem to the
277 ffmpeg-user@mplayerhq.hu mailing list or IRC #ffmpeg on irc.freenode.net.
278 EOF
279 if disabled logging; then
280 cat <<EOF
281 Rerun configure with logging enabled (do not use --disable-logging), and
282 include the log this produces with your report.
283 EOF
284 else
285 cat <<EOF
286 Include the log file "$logfile" produced by configure as this will help
287 solving the problem.
288 EOF
289 fi
290 exit 1
291 }
292
293 # Avoid locale weirdness, besides we really just want to translate ASCII.
294 toupper(){
295 echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
296 }
297
298 tolower(){
299 echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
300 }
301
302 c_escape(){
303 echo "$*" | sed 's/["\\]/\\\0/g'
304 }
305
306 sh_quote(){
307 v=$(echo "$1" | sed "s/'/'\\\\''/g")
308 test "$v" = "${v#*[ |&;<>()$\`\\\"\'*?\[\]#~=%]}" || v="'$v'"
309 echo "$v"
310 }
311
312 filter(){
313 pat=$1
314 shift
315 for v; do
316 eval "case $v in $pat) echo $v ;; esac"
317 done
318 }
319
320 map(){
321 m=$1
322 shift
323 for v; do eval $m; done
324 }
325
326 set_all(){
327 value=$1
328 shift
329 for var in $*; do
330 eval $var=$value
331 done
332 }
333
334 set_weak(){
335 value=$1
336 shift
337 for var; do
338 eval : \${$var:=$value}
339 done
340 }
341
342 pushvar(){
343 for var in $*; do
344 eval level=\${${var}_level:=0}
345 eval ${var}_${level}="\$$var"
346 eval ${var}_level=$(($level+1))
347 done
348 }
349
350 popvar(){
351 for var in $*; do
352 eval level=\${${var}_level:-0}
353 test $level = 0 && continue
354 eval level=$(($level-1))
355 eval $var="\${${var}_${level}}"
356 eval ${var}_level=$level
357 eval unset ${var}_${level}
358 done
359 }
360
361 enable(){
362 set_all yes $*
363 }
364
365 disable(){
366 set_all no $*
367 }
368
369 enable_weak(){
370 set_weak yes $*
371 }
372
373 disable_weak(){
374 set_weak no $*
375 }
376
377 enable_safe(){
378 for var; do
379 enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
380 done
381 }
382
383 disable_safe(){
384 for var; do
385 disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
386 done
387 }
388
389 do_enable_deep(){
390 for var; do
391 enabled $var && continue
392 eval sel="\$${var}_select"
393 eval sgs="\$${var}_suggest"
394 pushvar var sgs
395 enable_deep $sel
396 popvar sgs
397 enable_deep_weak $sgs
398 popvar var
399 done
400 }
401
402 enable_deep(){
403 do_enable_deep $*
404 enable $*
405 }
406
407 enable_deep_weak(){
408 do_enable_deep $*
409 enable_weak $*
410 }
411
412 enabled(){
413 test "${1#!}" = "$1" && op== || op=!=
414 eval test "x\$${1#!}" $op "xyes"
415 }
416
417 disabled(){
418 test "${1#!}" = "$1" && op== || op=!=
419 eval test "x\$${1#!}" $op "xno"
420 }
421
422 enabled_all(){
423 for opt; do
424 enabled $opt || return 1
425 done
426 }
427
428 disabled_all(){
429 for opt; do
430 disabled $opt || return 1
431 done
432 }
433
434 enabled_any(){
435 for opt; do
436 enabled $opt && return 0
437 done
438 }
439
440 disabled_any(){
441 for opt; do
442 disabled $opt && return 0
443 done
444 return 1
445 }
446
447 set_default(){
448 for opt; do
449 eval : \${$opt:=\$${opt}_default}
450 done
451 }
452
453 is_in(){
454 value=$1
455 shift
456 for var in $*; do
457 [ $var = $value ] && return 0
458 done
459 return 1
460 }
461
462 check_deps(){
463 for cfg; do
464 cfg="${cfg#!}"
465 enabled ${cfg}_checking && die "Circular dependency for $cfg."
466 disabled ${cfg}_checking && continue
467 enable ${cfg}_checking
468
469 eval dep_all="\$${cfg}_deps"
470 eval dep_any="\$${cfg}_deps_any"
471 eval dep_sel="\$${cfg}_select"
472 eval dep_sgs="\$${cfg}_suggest"
473 eval dep_ifa="\$${cfg}_if"
474 eval dep_ifn="\$${cfg}_if_any"
475
476 pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
477 check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
478 popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
479
480 [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
481 [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
482 enabled_all $dep_all || disable $cfg
483 enabled_any $dep_any || disable $cfg
484 disabled_any $dep_sel && disable $cfg
485
486 if enabled $cfg; then
487 eval dep_extralibs="\$${cfg}_extralibs"
488 test -n "$dep_extralibs" && add_extralibs $dep_extralibs
489 enable_deep $dep_sel
490 enable_deep_weak $dep_sgs
491 fi
492
493 disable ${cfg}_checking
494 done
495 }
496
497 print_config(){
498 pfx=$1
499 header=$2
500 makefile=$3
501 shift 3
502 for cfg; do
503 ucname="$(toupper $cfg)"
504 if enabled $cfg; then
505 echo "#define ${pfx}${ucname} 1" >> $header
506 echo "${pfx}${ucname}=yes" >> $makefile
507 else
508 echo "#define ${pfx}${ucname} 0" >> $header
509 echo "!${pfx}${ucname}=yes" >> $makefile
510 fi
511 done
512 }
513
514 flags_saved(){
515 (: ${SAVE_CFLAGS?}) 2> /dev/null
516 }
517
518 save_flags(){
519 flags_saved && return
520 SAVE_CFLAGS="$CFLAGS"
521 SAVE_LDFLAGS="$LDFLAGS"
522 SAVE_extralibs="$extralibs"
523 }
524
525 restore_flags(){
526 flags_saved || return
527 CFLAGS="$SAVE_CFLAGS"
528 LDFLAGS="$SAVE_LDFLAGS"
529 extralibs="$SAVE_extralibs"
530 unset SAVE_CFLAGS
531 unset SAVE_LDFLAGS
532 unset SAVE_extralibs
533 }
534
535 temp_cflags(){
536 save_flags
537 CFLAGS="$CFLAGS $*"
538 }
539
540 temp_ldflags(){
541 save_flags
542 LDFLAGS="$LDFLAGS $*"
543 }
544
545 temp_extralibs(){
546 save_flags
547 extralibs="$extralibs $*"
548 }
549
550 append(){
551 var=$1
552 shift
553 flags_saved && eval "SAVE_$var=\"\$SAVE_$var $*\""
554 eval "$var=\"\$$var $*\""
555 }
556
557 add_cppflags(){
558 append CPPFLAGS $($filter_cppflags "$@")
559 }
560
561 add_cflags(){
562 append CFLAGS $($filter_cflags "$@")
563 }
564
565 add_asflags(){
566 append ASFLAGS $($filter_asflags "$@")
567 }
568
569 add_ldflags(){
570 append LDFLAGS "$@"
571 }
572
573 add_extralibs(){
574 append extralibs "$@"
575 }
576
577 check_cmd(){
578 log "$@"
579 "$@" >> $logfile 2>&1
580 }
581
582 check_cc(){
583 log check_cc "$@"
584 cat > $TMPC
585 log_file $TMPC
586 check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
587 }
588
589 check_cpp(){
590 log check_cpp "$@"
591 cat > $TMPC
592 log_file $TMPC
593 check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
594 }
595
596 check_as(){
597 log check_as "$@"
598 cat > $TMPC
599 log_file $TMPC
600 check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
601 }
602
603 check_asm(){
604 log check_asm "$@"
605 name="$1"
606 code="$2"
607 shift 2
608 disable $name
609 check_as "$@" <<EOF && enable $name
610 void foo(void){ __asm__ volatile($code); }
611 EOF
612 }
613
614 check_yasm(){
615 log check_yasm "$@"
616 echo "$1" > $TMPS
617 log_file $TMPS
618 shift 1
619 check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
620 }
621
622 check_ld(){
623 log check_ld "$@"
624 flags=''
625 libs=''
626 for f; do
627 test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
628 done
629 check_cc $($filter_cflags $flags) || return
630 check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $extralibs $libs
631 }
632
633 check_cppflags(){
634 log check_cppflags "$@"
635 set -- $($filter_cppflags "$@")
636 check_cc "$@" <<EOF && append CPPFLAGS "$@"
637 int x;
638 EOF
639 }
640
641 check_cflags(){
642 log check_cflags "$@"
643 set -- $($filter_cflags "$@")
644 check_cc "$@" <<EOF && append CFLAGS "$@"
645 int x;
646 EOF
647 }
648
649 test_ldflags(){
650 log test_ldflags "$@"
651 check_ld "$@" <<EOF
652 int main(void){ return 0; }
653 EOF
654 }
655
656 check_ldflags(){
657 log check_ldflags "$@"
658 test_ldflags "$@" && add_ldflags "$@"
659 }
660
661 check_header(){
662 log check_header "$@"
663 header=$1
664 shift
665 disable_safe $header
666 check_cpp "$@" <<EOF && enable_safe $header
667 #include <$header>
668 int x;
669 EOF
670 }
671
672 check_func(){
673 log check_func "$@"
674 func=$1
675 shift
676 disable $func
677 check_ld "$@" <<EOF && enable $func
678 extern int $func();
679 int main(void){ $func(); }
680 EOF
681 }
682
683 check_mathfunc(){
684 log check_mathfunc "$@"
685 func=$1
686 shift
687 disable $func
688 check_ld "$@" <<EOF && enable $func
689 #include <math.h>
690 float foo(float f) { return $func(f); }
691 int main(void){ return 0; }
692 EOF
693 }
694
695 check_func_headers(){
696 log check_func_headers "$@"
697 headers=$1
698 func=$2
699 shift 2
700 disable $func
701 incs=""
702 for hdr in $headers; do
703 incs="$incs
704 #include <$hdr>"
705 done
706 check_ld "$@" <<EOF && enable $func && enable_safe $headers
707 $incs
708 int main(int argc, char **argv){
709 return (long) $func;
710 }
711 EOF
712 }
713
714 check_cpp_condition(){
715 log check_cpp_condition "$@"
716 header=$1
717 condition=$2
718 shift 2
719 check_cpp $($filter_cppflags "$@") <<EOF
720 #include <$header>
721 #if !($condition)
722 #error "unsatisfied condition: $condition"
723 #endif
724 EOF
725 }
726
727 check_lib(){
728 log check_lib "$@"
729 header="$1"
730 func="$2"
731 shift 2
732 temp_extralibs "$@"
733 check_header $header && check_func $func && add_extralibs "$@"
734 err=$?
735 restore_flags
736 return $err
737 }
738
739 check_lib2(){
740 log check_lib2 "$@"
741 headers="$1"
742 func="$2"
743 shift 2
744 check_func_headers "$headers" $func "$@" && add_extralibs "$@"
745 }
746
747 check_exec(){
748 check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
749 }
750
751 check_exec_crash(){
752 code=$(cat)
753
754 # exit() is not async signal safe. _Exit (C99) and _exit (POSIX)
755 # are safe but may not be available everywhere. Thus we use
756 # raise(SIGTERM) instead. The check is run in a subshell so we
757 # can redirect the "Terminated" message from the shell. SIGBUS
758 # is not defined by standard C so it is used conditionally.
759
760 (check_exec "$@") >> $logfile 2>&1 <<EOF
761 #include <signal.h>
762 static void sighandler(int sig){
763 raise(SIGTERM);
764 }
765 int main(void){
766 signal(SIGILL, sighandler);
767 signal(SIGFPE, sighandler);
768 signal(SIGSEGV, sighandler);
769 #ifdef SIGBUS
770 signal(SIGBUS, sighandler);
771 #endif
772 { $code }
773 }
774 EOF
775 }
776
777 check_type(){
778 log check_type "$@"
779 headers=$1
780 type=$2
781 shift 2
782 disable_safe "$type"
783 incs=""
784 for hdr in $headers; do
785 incs="$incs
786 #include <$hdr>"
787 done
788 check_cc "$@" <<EOF && enable_safe "$type"
789 $incs
790 $type v;
791 EOF
792 }
793
794 check_struct(){
795 log check_type "$@"
796 headers=$1
797 struct=$2
798 member=$3
799 shift 3
800 disable_safe "${struct}_${member}"
801 incs=""
802 for hdr in $headers; do
803 incs="$incs
804 #include <$hdr>"
805 done
806 check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
807 $incs
808 const void *p = &(($struct *)0)->$member;
809 EOF
810 }
811
812 require(){
813 name="$1"
814 header="$2"
815 func="$3"
816 shift 3
817 check_lib $header $func "$@" || die "ERROR: $name not found"
818 }
819
820 require2(){
821 name="$1"
822 headers="$2"
823 func="$3"
824 shift 3
825 check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
826 }
827
828 check_foo_config(){
829 cfg=$1
830 pkg=$2
831 header=$3
832 func=$4
833 shift 4
834 disable $cfg
835 check_cmd ${pkg}-config --version
836 err=$?
837 if test "$err" = 0; then
838 temp_cflags $(${pkg}-config --cflags)
839 temp_extralibs $(${pkg}-config --libs)
840 check_lib "$@" $header $func && enable $cfg
841 fi
842 return $err
843 }
844
845 check_host_cc(){
846 log check_host_cc "$@"
847 cat > $TMPC
848 log_file $TMPC
849 check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
850 }
851
852 check_host_cflags(){
853 log check_host_cflags "$@"
854 check_host_cc "$@" <<EOF && append host_cflags "$@"
855 int x;
856 EOF
857 }
858
859 apply(){
860 file=$1
861 shift
862 "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
863 }
864
865 cp_if_changed(){
866 cmp -s "$1" "$2" &&
867 echo "$2 is unchanged" ||
868 cp -f "$1" "$2"
869 }
870
871 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
872 # system-dependent things.
873
874 COMPONENT_LIST="
875 bsfs
876 decoders
877 demuxers
878 encoders
879 filters
880 hwaccels
881 indevs
882 muxers
883 outdevs
884 parsers
885 protocols
886 "
887
888 CONFIG_LIST="
889 $COMPONENT_LIST
890 aandct
891 avcodec
892 avdevice
893 avfilter
894 avfilter_lavf
895 avformat
896 avisynth
897 beos_netserver
898 bzlib
899 dct
900 doc
901 dwt
902 dxva2
903 fastdiv
904 ffmpeg
905 ffplay
906 ffprobe
907 ffserver
908 fft
909 golomb
910 gpl
911 gprof
912 gray
913 h264dsp
914 hardcoded_tables
915 libdc1394
916 libdirac
917 libfaac
918 libfaad
919 libfaadbin
920 libgsm
921 libmp3lame
922 libnut
923 libopencore_amrnb
924 libopencore_amrwb
925 libopenjpeg
926 librtmp
927 libschroedinger
928 libspeex
929 libtheora
930 libvorbis
931 libvpx
932 libx264
933 libxvid
934 lpc
935 lsp
936 mdct
937 memalign_hack
938 mlib
939 mpegaudio_hp
940 network
941 nonfree
942 pic
943 postproc
944 powerpc_perf
945 rdft
946 runtime_cpudetect
947 shared
948 small
949 sram
950 static
951 swscale
952 swscale_alpha
953 vaapi
954 vdpau
955 version3
956 x11grab
957 zlib
958 "
959
960 THREADS_LIST='
961 beosthreads
962 os2threads
963 pthreads
964 w32threads
965 '
966
967 ARCH_LIST='
968 alpha
969 arm
970 avr32
971 avr32_ap
972 avr32_uc
973 bfin
974 ia64
975 m68k
976 mips
977 mips64
978 parisc
979 ppc
980 ppc64
981 s390
982 sh4
983 sparc
984 sparc64
985 tomi
986 x86
987 x86_32
988 x86_64
989 '
990
991 ARCH_EXT_LIST='
992 altivec
993 amd3dnow
994 amd3dnowext
995 armv5te
996 armv6
997 armv6t2
998 armvfp
999 iwmmxt
1000 mmi
1001 mmx
1002 mmx2
1003 neon
1004 ppc4xx
1005 sse
1006 ssse3
1007 vis
1008 '
1009
1010 HAVE_LIST_PUB='
1011 bigendian
1012 '
1013
1014 HAVE_LIST="
1015 $ARCH_EXT_LIST
1016 $HAVE_LIST_PUB
1017 $THREADS_LIST
1018 alsa_asoundlib_h
1019 altivec_h
1020 arpa_inet_h
1021 attribute_may_alias
1022 attribute_packed
1023 bswap
1024 closesocket
1025 cmov
1026 conio_h
1027 dcbzl
1028 dev_bktr_ioctl_bt848_h
1029 dev_bktr_ioctl_meteor_h
1030 dev_ic_bt8xx_h
1031 dev_video_meteor_ioctl_meteor_h
1032 dev_video_bktr_ioctl_bt848_h
1033 dlfcn_h
1034 dlopen
1035 dos_paths
1036 ebp_available
1037 ebx_available
1038 exp2
1039 exp2f
1040 fast_64bit
1041 fast_clz
1042 fast_cmov
1043 fast_unaligned
1044 fork
1045 getaddrinfo
1046 gethrtime
1047 GetProcessMemoryInfo
1048 GetProcessTimes
1049 getrusage
1050 struct_rusage_ru_maxrss
1051 inet_aton
1052 inline_asm
1053 isatty
1054 ldbrx
1055 libdc1394_1
1056 libdc1394_2
1057 llrint
1058 llrintf
1059 local_aligned_16
1060 local_aligned_8
1061 log2
1062 log2f
1063 loongson
1064 lrint
1065 lrintf
1066 lzo1x_999_compress
1067 machine_ioctl_bt848_h
1068 machine_ioctl_meteor_h
1069 malloc_h
1070 memalign
1071 mkstemp
1072 pld
1073 posix_memalign
1074 round
1075 roundf
1076 sdl
1077 sdl_video_size
1078 setmode
1079 socklen_t
1080 soundcard_h
1081 poll_h
1082 setrlimit
1083 strerror_r
1084 struct_addrinfo
1085 struct_ipv6_mreq
1086 struct_sockaddr_in6
1087 struct_sockaddr_sa_len
1088 struct_sockaddr_storage
1089 sys_mman_h
1090 sys_resource_h
1091 sys_select_h
1092 sys_soundcard_h
1093 sys_videoio_h
1094 ten_operands
1095 termios_h
1096 threads
1097 truncf
1098 vfp_args
1099 VirtualAlloc
1100 winsock2_h
1101 xform_asm
1102 yasm
1103 "
1104
1105 # options emitted with CONFIG_ prefix but not available on command line
1106 CONFIG_EXTRA="
1107 avutil
1108 gplv3
1109 lgplv3
1110 "
1111
1112 CMDLINE_SELECT="
1113 $ARCH_EXT_LIST
1114 $CONFIG_LIST
1115 $THREADS_LIST
1116 asm
1117 cross_compile
1118 debug
1119 extra_warnings
1120 logging
1121 optimizations
1122 stripping
1123 yasm
1124 "
1125
1126 PATHS_LIST='
1127 bindir
1128 datadir
1129 incdir
1130 libdir
1131 mandir
1132 prefix
1133 shlibdir
1134 '
1135
1136 CMDLINE_SET="
1137 $PATHS_LIST
1138 ar
1139 arch
1140 as
1141 build_suffix
1142 cc
1143 cpu
1144 cross_prefix
1145 dep_cc
1146 extra_version
1147 host_cc
1148 host_cflags
1149 host_ldflags
1150 host_libs
1151 host_os
1152 ld
1153 logfile
1154 malloc_prefix
1155 nm
1156 samples
1157 source_path
1158 strip
1159 sysinclude
1160 sysroot
1161 target_exec
1162 target_os
1163 target_path
1164 "
1165
1166 CMDLINE_APPEND="
1167 extra_cflags
1168 "
1169
1170 # code dependency declarations
1171
1172 # architecture extensions
1173
1174 armv5te_deps="arm"
1175 armv6_deps="arm"
1176 armv6t2_deps="arm"
1177 armvfp_deps="arm"
1178 iwmmxt_deps="arm"
1179 neon_deps="arm"
1180
1181 mmi_deps="mips"
1182
1183 altivec_deps="ppc"
1184 ppc4xx_deps="ppc"
1185
1186 vis_deps="sparc"
1187
1188 x86_64_suggest="cmov fast_cmov"
1189 amd3dnow_deps="mmx"
1190 amd3dnowext_deps="amd3dnow"
1191 mmx_deps="x86"
1192 mmx2_deps="mmx"
1193 sse_deps="mmx"
1194 ssse3_deps="sse"
1195
1196 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1197 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1198 fast_unaligned_if_any="armv6 ppc x86"
1199
1200 need_memalign="altivec neon sse"
1201 inline_asm_deps="!tms470"
1202
1203 # subsystems
1204 mdct_select="fft"
1205 rdft_select="fft"
1206
1207 # decoders / encoders / hardware accelerators
1208 aac_decoder_select="mdct rdft aac_parser"
1209 aac_encoder_select="mdct"
1210 ac3_decoder_select="mdct ac3_parser"
1211 alac_encoder_select="lpc"
1212 amrnb_decoder_select="lsp"
1213 atrac1_decoder_select="mdct"
1214 atrac3_decoder_select="mdct"
1215 binkaudio_dct_decoder_select="mdct rdft dct"
1216 binkaudio_rdft_decoder_select="mdct rdft"
1217 cavs_decoder_select="golomb"
1218 cook_decoder_select="mdct"
1219 cscd_decoder_suggest="zlib"
1220 dca_decoder_select="mdct"
1221 dnxhd_encoder_select="aandct"
1222 dxa_decoder_select="zlib"
1223 eac3_decoder_select="ac3_decoder"
1224 eamad_decoder_select="aandct"
1225 eatgq_decoder_select="aandct"
1226 eatqi_decoder_select="aandct"
1227 ffv1_decoder_select="golomb"
1228 flac_decoder_select="golomb"
1229 flac_encoder_select="golomb lpc"
1230 flashsv_decoder_select="zlib"
1231 flashsv_encoder_select="zlib"
1232 flv_decoder_select="h263_decoder"
1233 flv_encoder_select="h263_encoder"
1234 h261_encoder_select="aandct"
1235 h263_decoder_select="h263_parser"
1236 h263_encoder_select="aandct"
1237 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1238 h263i_decoder_select="h263_decoder"
1239 h263p_encoder_select="h263_encoder"
1240 h264_decoder_select="golomb h264dsp"
1241 h264_dxva2_hwaccel_deps="dxva2api_h"
1242 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1243 h264_vaapi_hwaccel_select="vaapi"
1244 h264_vdpau_decoder_select="vdpau h264_decoder"
1245 imc_decoder_select="fft mdct"
1246 jpegls_decoder_select="golomb"
1247 jpegls_encoder_select="golomb"
1248 ljpeg_encoder_select="aandct"
1249 loco_decoder_select="golomb"
1250 mjpeg_encoder_select="aandct"
1251 mlp_decoder_select="mlp_parser"
1252 mpeg1video_encoder_select="aandct"
1253 mpeg2video_encoder_select="aandct"
1254 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1255 mpeg4_encoder_select="h263_encoder"
1256 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1257 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1258 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1259 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1260 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1261 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1262 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1263 msmpeg4v1_decoder_select="h263_decoder"
1264 msmpeg4v1_encoder_select="h263_encoder"
1265 msmpeg4v2_decoder_select="h263_decoder"
1266 msmpeg4v2_encoder_select="h263_encoder"
1267 msmpeg4v3_decoder_select="h263_decoder"
1268 msmpeg4v3_encoder_select="h263_encoder"
1269 nellymoser_decoder_select="mdct"
1270 nellymoser_encoder_select="mdct"
1271 png_decoder_select="zlib"
1272 png_encoder_select="zlib"
1273 qcelp_decoder_select="lsp"
1274 qdm2_decoder_select="mdct rdft"
1275 rv10_decoder_select="h263_decoder"
1276 rv10_encoder_select="h263_encoder"
1277 rv20_decoder_select="h263_decoder"
1278 rv20_encoder_select="h263_encoder"
1279 rv30_decoder_select="golomb h264dsp"
1280 rv40_decoder_select="golomb h264dsp"
1281 shorten_decoder_select="golomb"
1282 sipr_decoder_select="lsp"
1283 snow_decoder_select="dwt"
1284 snow_encoder_select="aandct dwt"
1285 sonic_decoder_select="golomb"
1286 sonic_encoder_select="golomb"
1287 sonic_ls_encoder_select="golomb"
1288 svq1_encoder_select="aandct"
1289 svq3_decoder_select="golomb h264dsp"
1290 svq3_decoder_suggest="zlib"
1291 theora_decoder_select="vp3_decoder"
1292 tiff_decoder_suggest="zlib"
1293 tiff_encoder_suggest="zlib"
1294 truehd_decoder_select="mlp_decoder"
1295 tscc_decoder_select="zlib"
1296 twinvq_decoder_select="mdct lsp"
1297 vc1_decoder_select="h263_decoder"
1298 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1299 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1300 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1301 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1302 vorbis_decoder_select="mdct"
1303 vorbis_encoder_select="mdct"
1304 vp6a_decoder_select="vp6_decoder"
1305 vp6f_decoder_select="vp6_decoder"
1306 wmapro_decoder_select="mdct"
1307 wmav1_decoder_select="mdct"
1308 wmav1_encoder_select="mdct"
1309 wmav2_decoder_select="mdct"
1310 wmav2_encoder_select="mdct"
1311 wmavoice_decoder_select="lsp rdft dct"
1312 wmv1_decoder_select="h263_decoder"
1313 wmv1_encoder_select="h263_encoder"
1314 wmv2_decoder_select="h263_decoder"
1315 wmv2_encoder_select="h263_encoder"
1316 wmv3_decoder_select="vc1_decoder"
1317 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1318 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1319 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1320 zlib_decoder_select="zlib"
1321 zlib_encoder_select="zlib"
1322 zmbv_decoder_select="zlib"
1323 zmbv_encoder_select="zlib"
1324
1325 vaapi_deps="va_va_h"
1326 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1327
1328 # parsers
1329 h264_parser_select="golomb h264dsp"
1330
1331 # bitstream_filters
1332 aac_adtstoasc_bsf_select="aac_parser"
1333
1334 # external libraries
1335 libdirac_decoder_deps="libdirac !libschroedinger"
1336 libdirac_encoder_deps="libdirac"
1337 libfaac_encoder_deps="libfaac"
1338 libfaad_decoder_deps="libfaad"
1339 libfaadbin_extralibs='$ldl'
1340 libgsm_decoder_deps="libgsm"
1341 libgsm_encoder_deps="libgsm"
1342 libgsm_ms_decoder_deps="libgsm"
1343 libgsm_ms_encoder_deps="libgsm"
1344 libmp3lame_encoder_deps="libmp3lame"
1345 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1346 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1347 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1348 libopenjpeg_decoder_deps="libopenjpeg"
1349 libschroedinger_decoder_deps="libschroedinger"
1350 libschroedinger_encoder_deps="libschroedinger"
1351 libspeex_decoder_deps="libspeex"
1352 libtheora_encoder_deps="libtheora"
1353 libvorbis_encoder_deps="libvorbis"
1354 libvpx_decoder_deps="libvpx"
1355 libx264_encoder_deps="libx264"
1356 libxvid_encoder_deps="libxvid"
1357
1358 # demuxers / muxers
1359 ac3_demuxer_deps="ac3_parser"
1360 asf_stream_muxer_select="asf_muxer"
1361 avisynth_demuxer_deps="avisynth"
1362 dirac_demuxer_deps="dirac_parser"
1363 eac3_demuxer_select="ac3_parser"
1364 ipod_muxer_select="mov_muxer"
1365 libnut_demuxer_deps="libnut"
1366 libnut_muxer_deps="libnut"
1367 matroska_audio_muxer_select="matroska_muxer"
1368 matroska_demuxer_suggest="zlib bzlib"
1369 mov_demuxer_suggest="zlib"
1370 mp3_demuxer_deps="mpegaudio_parser"
1371 mp4_muxer_select="mov_muxer"
1372 mpegtsraw_demuxer_select="mpegts_demuxer"
1373 mxf_d10_muxer_select="mxf_muxer"
1374 ogg_demuxer_select="golomb"
1375 psp_muxer_select="mov_muxer"
1376 rtsp_demuxer_deps="sdp_demuxer"
1377 rtsp_muxer_deps="sdp_demuxer"
1378 rtsp_muxer_select="rtp_muxer"
1379 sdp_demuxer_deps="rtp_protocol mpegts_demuxer"
1380 sdp_demuxer_select="asf_demuxer rm_demuxer"
1381 spdif_muxer_select="aac_parser"
1382 tg2_muxer_select="mov_muxer"
1383 tgp_muxer_select="mov_muxer"
1384 w64_demuxer_deps="wav_demuxer"
1385
1386 # indevs / outdevs
1387 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1388 alsa_indev_extralibs="-lasound"
1389 alsa_outdev_deps="alsa_asoundlib_h"
1390 alsa_outdev_extralibs="-lasound"
1391 audio_beos_indev_deps="audio_beos"
1392 audio_beos_indev_extralibs="-lmedia -lbe"
1393 audio_beos_outdev_deps="audio_beos"
1394 audio_beos_outdev_extralibs="-lmedia -lbe"
1395 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1396 dv1394_indev_deps="dv1394 dv_demuxer"
1397 jack_indev_deps="jack_jack_h"
1398 jack_indev_extralibs="-ljack"
1399 libdc1394_indev_deps="libdc1394"
1400 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1401 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1402 v4l_indev_deps="linux_videodev_h"
1403 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1404 vfwcap_indev_deps="capCreateCaptureWindow"
1405 vfwcap_indev_extralibs="-lavicap32"
1406 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1407 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1408
1409 # protocols
1410 gopher_protocol_deps="network"
1411 http_protocol_deps="network"
1412 http_protocol_select="tcp_protocol"
1413 mmst_protocol_deps="network"
1414 rtmp_protocol_select="tcp_protocol"
1415 rtp_protocol_select="udp_protocol"
1416 tcp_protocol_deps="network"
1417 udp_protocol_deps="network"
1418
1419 # filters
1420 movie_filter_deps="avfilter_lavf"
1421 avfilter_lavf_deps="avformat"
1422
1423 # libraries
1424 avdevice_deps="avcodec avformat"
1425 avformat_deps="avcodec"
1426
1427 # programs
1428 ffmpeg_deps="avcodec avformat swscale"
1429 ffmpeg_select="buffer_filter"
1430 ffplay_deps="avcodec avformat swscale sdl"
1431 ffplay_select="rdft"
1432 ffprobe_deps="avcodec avformat"
1433 ffserver_deps="avformat ffm_muxer rtp_protocol rtsp_demuxer"
1434 ffserver_extralibs='$ldl'
1435
1436 doc_deps="texi2html"
1437
1438 # default parameters
1439
1440 logfile="config.err"
1441
1442 # installation paths
1443 prefix_default="/usr/local"
1444 bindir_default='${prefix}/bin'
1445 datadir_default='${prefix}/share/ffmpeg'
1446 incdir_default='${prefix}/include'
1447 libdir_default='${prefix}/lib'
1448 mandir_default='${prefix}/share/man'
1449 shlibdir_default="$libdir_default"
1450
1451 # toolchain
1452 ar_default="ar"
1453 cc_default="gcc"
1454 cc_version=\"unknown\"
1455 host_cc_default="gcc"
1456 ln_s="ln -sf"
1457 nm_default="nm"
1458 objformat="elf"
1459 ranlib="ranlib"
1460 strip_default="strip"
1461 yasmexe="yasm"
1462
1463 nm_opts='-g'
1464
1465 # machine
1466 arch_default=$(uname -m)
1467 cpu="generic"
1468
1469 # OS
1470 target_os_default=$(tolower $(uname -s))
1471 host_os=$target_os_default
1472
1473 # configurable options
1474 enable avcodec
1475 enable avdevice
1476 enable avfilter
1477 enable avformat
1478 enable avutil
1479 enable asm
1480 enable debug
1481 enable doc
1482 enable fastdiv
1483 enable ffmpeg
1484 enable ffplay
1485 enable ffprobe
1486 enable ffserver
1487 enable mpegaudio_hp
1488 enable network
1489 enable optimizations
1490 enable protocols
1491 enable static
1492 enable stripping
1493 enable swscale
1494 enable swscale_alpha
1495
1496 # build settings
1497 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1498 FFSERVERLDFLAGS=-Wl,-E
1499 LIBPREF="lib"
1500 LIBSUF=".a"
1501 FULLNAME='$(NAME)$(BUILDSUF)'
1502 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1503 SLIBPREF="lib"
1504 SLIBSUF=".so"
1505 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1506 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1507 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1508 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1509
1510 CC_O='-o $@'
1511
1512 host_cflags='-D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -O3 -g -Wall'
1513 host_libs='-lm'
1514
1515 target_path='$(CURDIR)'
1516
1517 # gcc stupidly only outputs the basename of targets with -MM, but we need the
1518 # full relative path for objects in subdirectories for non-recursive Make.
1519 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1520 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1521
1522 # find source path
1523 source_path="$(dirname "$0")"
1524 enable source_path_used
1525 if test -f configure; then
1526 source_path="$(pwd)"
1527 disable source_path_used
1528 else
1529 source_path="$(cd "$source_path"; pwd)"
1530 echo "$source_path" | grep -q '[[:blank:]]' &&
1531 die "Out of tree builds are impossible with whitespace in source path."
1532 test -e "$source_path/config.h" &&
1533 die "Out of tree builds are impossible with config.h in source dir."
1534 fi
1535
1536 for v in "$@"; do
1537 r=${v#*=}
1538 l=${v%"$r"}
1539 r=$(sh_quote "$r")
1540 FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
1541 done
1542
1543 find_things(){
1544 thing=$1
1545 pattern=$2
1546 file=$source_path/$3
1547 sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1548 }
1549
1550 ENCODER_LIST=$(find_things encoder ENC libavcodec/allcodecs.c)
1551 DECODER_LIST=$(find_things decoder DEC libavcodec/allcodecs.c)
1552 HWACCEL_LIST=$(find_things hwaccel HWACCEL libavcodec/allcodecs.c)
1553 PARSER_LIST=$(find_things parser PARSER libavcodec/allcodecs.c)
1554 BSF_LIST=$(find_things bsf BSF libavcodec/allcodecs.c)
1555 MUXER_LIST=$(find_things muxer _MUX libavformat/allformats.c)
1556 DEMUXER_LIST=$(find_things demuxer DEMUX libavformat/allformats.c)
1557 OUTDEV_LIST=$(find_things outdev OUTDEV libavdevice/alldevices.c)
1558 INDEV_LIST=$(find_things indev _IN libavdevice/alldevices.c)
1559 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1560 FILTER_LIST=$(find_things filter FILTER libavfilter/allfilters.c)
1561
1562 for n in $COMPONENT_LIST; do
1563 v=$(toupper ${n%s})_LIST
1564 eval enable \$$v
1565 eval ${n}_if_any="\$$v"
1566 done
1567
1568 enable $ARCH_EXT_LIST
1569
1570 die_unknown(){
1571 echo "Unknown option \"$1\"."
1572 echo "See $0 --help for available options."
1573 exit 1
1574 }
1575
1576 show_list() {
1577 suffix=_$1
1578 shift
1579 echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1580 exit 0
1581 }
1582
1583 for opt do
1584 optval="${opt#*=}"
1585 case "$opt" in
1586 --extra-ldflags=*) add_ldflags $optval
1587 ;;
1588 --extra-libs=*) add_extralibs $optval
1589 ;;
1590 --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1591 ;;
1592 --enable-debug=*) debuglevel="$optval"
1593 ;;
1594 --disable-everything)
1595 map 'eval disable \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1596 ;;
1597 --enable-*=*|--disable-*=*)
1598 eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1599 is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1600 eval list=\$$(toupper $thing)_LIST
1601 name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1602 $action $(filter "$name" $list)
1603 ;;
1604 --enable-?*|--disable-?*)
1605 eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1606 if is_in $option $COMPONENT_LIST; then
1607 test $action = disable && action=unset
1608 eval $action \$$(toupper ${option%s})_LIST
1609 elif is_in $option $CMDLINE_SELECT; then
1610 $action $option
1611 else
1612 die_unknown $opt
1613 fi
1614 ;;
1615 --list-*)
1616 NAME="${opt#--list-}"
1617 is_in $NAME $COMPONENT_LIST || die_unknown $opt
1618 NAME=${NAME%s}
1619 eval show_list $NAME \$$(toupper $NAME)_LIST
1620 ;;
1621 --help|-h) show_help
1622 ;;
1623 *)
1624 optname="${opt%%=*}"
1625 optname="${optname#--}"
1626 optname=$(echo "$optname" | sed 's/-/_/g')
1627 if is_in $optname $CMDLINE_SET; then
1628 eval $optname='$optval'
1629 elif is_in $optname $CMDLINE_APPEND; then
1630 append $optname "$optval"
1631 else
1632 die_unknown $opt
1633 fi
1634 ;;
1635 esac
1636 done
1637
1638 disabled logging && logfile=/dev/null
1639
1640 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
1641 set >> $logfile
1642
1643 test -n "$cross_prefix" && enable cross_compile
1644
1645 if enabled cross_compile; then
1646 test -n "$arch" && test -n "$target_os" ||
1647 die "Must specify target arch and OS when cross-compiling"
1648 fi
1649
1650 set_default arch target_os
1651
1652 ar_default="${cross_prefix}${ar_default}"
1653 cc_default="${cross_prefix}${cc_default}"
1654 nm_default="${cross_prefix}${nm_default}"
1655 ranlib="${cross_prefix}${ranlib}"
1656 strip_default="${cross_prefix}${strip_default}"
1657
1658 sysinclude_default="${sysroot}/usr/include"
1659
1660 set_default cc nm strip sysinclude
1661 enabled cross_compile || host_cc_default=$cc
1662 set_default host_cc
1663
1664 exesuf() {
1665 case $1 in
1666 mingw32*|cygwin*|*-dos|freedos|opendos|os/2*) echo .exe ;;
1667 esac
1668 }
1669
1670 EXESUF=$(exesuf $target_os)
1671 HOSTEXESUF=$(exesuf $host_os)
1672
1673 # set temporary file name
1674 : ${TMPDIR:=$TEMPDIR}
1675 : ${TMPDIR:=$TMP}
1676 : ${TMPDIR:=/tmp}
1677
1678 if ! check_cmd type mktemp; then
1679 # simple replacement for missing mktemp
1680 # NOT SAFE FOR GENERAL USE
1681 mktemp(){
1682 echo "${2%XXX*}.${HOSTNAME}.${UID}.$$"
1683 }
1684 fi
1685
1686 tmpfile(){
1687 tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1688 (set -C; exec > $tmp) 2>/dev/null ||
1689 die "Unable to create temporary file in $TMPDIR."
1690 append TMPFILES $tmp
1691 eval $1=$tmp
1692 }
1693
1694 trap 'rm -f -- $TMPFILES' EXIT
1695 trap exit HUP INT TERM
1696
1697 tmpfile TMPC .c
1698 tmpfile TMPE $EXESUF
1699 tmpfile TMPH .h
1700 tmpfile TMPO .o
1701 tmpfile TMPS .S
1702 tmpfile TMPV .ver
1703 tmpfile TMPSH .sh
1704
1705 unset -f mktemp
1706
1707 # make sure we can execute files in $TMPDIR
1708 cat > $TMPSH 2>> $logfile <<EOF
1709 #! /bin/sh
1710 EOF
1711 chmod +x $TMPSH >> $logfile 2>&1
1712 if ! $TMPSH >> $logfile 2>&1; then
1713 cat <<EOF
1714 Unable to create and execute files in $TMPDIR. Set the TMPDIR environment
1715 variable to another directory and make sure that it is not mounted noexec.
1716 EOF
1717 die "Sanity test failed."
1718 fi
1719
1720 filter_cflags=echo
1721 filter_cppflags=echo
1722 filter_asflags=echo
1723
1724 if $cc -v 2>&1 | grep -qi ^gcc; then
1725 cc_type=gcc
1726 cc_version=__VERSION__
1727 if ! $cc -dumpversion | grep -q '^2\.'; then
1728 CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1729 AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1730 fi
1731 speed_cflags='-O3'
1732 size_cflags='-Os'
1733 elif $cc --version 2>/dev/null | grep -q Intel; then
1734 cc_type=icc
1735 cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1736 CC_DEPFLAGS='-MMD'
1737 AS_DEPFLAGS='-MMD'
1738 speed_cflags='-O3'
1739 size_cflags='-Os'
1740 noopt_cflags='-O1'
1741 elif $cc -v 2>&1 | grep -q xlc; then
1742 cc_type=xlc
1743 cc_version="AV_STRINGIFY(__IBMC__)"
1744 speed_cflags='-O5'
1745 size_cflags='-O5 -qcompact'
1746 elif $cc -V 2>/dev/null | grep -q Compaq; then
1747 cc_type=ccc
1748 cc_version="AV_STRINGIFY(__DECC_VER)"
1749 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1750 debuglevel=3
1751 add_ldflags -Wl,-z,now # calls to libots crash without this
1752 speed_cflags='-fast'
1753 size_cflags='-O1'
1754 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
1755 test -d "$sysroot" || die "No valid sysroot specified."
1756 cc_type=armcc
1757 cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
1758 armcc_conf="$PWD/armcc.conf"
1759 $cc --arm_linux_configure \
1760 --arm_linux_config_file="$armcc_conf" \
1761 --configure_sysroot="$sysroot" \
1762 --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
1763 die "Error creating armcc configuration file."
1764 cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
1765 as_default="${cross_prefix}gcc"
1766 CC_DEPFLAGS='-MMD'
1767 AS_DEPFLAGS='-MMD'
1768 speed_cflags='-O3'
1769 size_cflags='-Os'
1770 elif $cc -version 2>/dev/null | grep -q TMS470; then
1771 cc_type=tms470
1772 cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
1773 cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
1774 CC_O='-fr=$(@D)'
1775 as_default="${cross_prefix}gcc"
1776 ld_default="${cross_prefix}gcc"
1777 TMPO=$(basename $TMPC .c).o
1778 append TMPFILES $TMPO
1779 add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
1780 CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
1781 AS_DEPFLAGS='-MMD'
1782 speed_cflags='-O3 -mf=5'
1783 size_cflags='-O3 -mf=2'
1784 filter_cflags=tms470_flags
1785 tms470_flags(){
1786 for flag; do
1787 case $flag in
1788 -march=*|-mcpu=*)
1789 case "${flag#*=}" in
1790 armv7-a|cortex-a*) echo -mv=7a8 ;;
1791 armv7-r|cortex-r*) echo -mv=7r4 ;;
1792 armv7-m|cortex-m*) echo -mv=7m3 ;;
1793 armv6*|arm11*) echo -mv=6 ;;
1794 armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
1795 echo -mv=5e ;;
1796 armv4*|arm7*|arm9[24]*) echo -mv=4 ;;
1797 esac
1798 ;;
1799 -mfpu=neon) echo --float_support=vfpv3 --neon ;;
1800 -mfpu=vfp) echo --float_support=vfpv2 ;;
1801 -mfpu=vfpv3) echo --float_support=vfpv3 ;;
1802 -msoft-float) echo --float_support=vfplib ;;
1803 -O[0-3]|-mf=*) echo $flag ;;
1804 -g) echo -g -mn ;;
1805 -pds=*) echo $flag ;;
1806 esac
1807 done
1808 }
1809 elif $cc -v 2>&1 | grep -q clang; then
1810 cc_type=clang
1811 cc_version=__VERSION__
1812 CC_DEPFLAGS='-MMD'
1813 AS_DEPFLAGS='-MMD'
1814 speed_cflags='-O3'
1815 size_cflags='-Os'
1816 elif $cc -V 2>&1 | grep -q Sun; then
1817 cc_type=suncc
1818 cc_version="AV_STRINGIFY(__SUNPRO_C)"
1819 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
1820 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
1821 speed_cflags='-O5'
1822 size_cflags='-O5 -xspace'
1823 filter_cflags=suncc_flags
1824 suncc_flags(){
1825 for flag; do
1826 case $flag in
1827 -march=*|-mcpu=*)
1828 case "${flag#*=}" in
1829 native) echo -xtarget=native ;;
1830 v9|niagara) echo -xarch=sparc ;;
1831 ultrasparc) echo -xarch=sparcvis ;;
1832 ultrasparc3|niagara2) echo -xarch=sparcvis2 ;;
1833 i586|pentium) echo -xchip=pentium ;;
1834 i686|pentiumpro|pentium2) echo -xtarget=pentium_pro ;;
1835 pentium3*|c3-2) echo -xtarget=pentium3 ;;
1836 pentium-m) echo -xarch=sse2 -xchip=pentium3 ;;
1837 pentium4*) echo -xtarget=pentium4 ;;
1838 prescott|nocona) echo -xarch=sse3 -xchip=pentium4 ;;
1839 *-sse3) echo -xarch=sse3 ;;
1840 core2) echo -xarch=ssse3 -xchip=core2 ;;
1841 amdfam10|barcelona) echo -xarch=sse4_1 ;;
1842 athlon-4|athlon-[mx]p) echo -xarch=ssea ;;
1843 k8|opteron|athlon64|athlon-fx)
1844 echo -xarch=sse2a ;;
1845 athlon*) echo -xarch=pentium_proa ;;
1846 esac
1847 ;;
1848 -std=c99) echo -xc99 ;;
1849 -fomit-frame-pointer) echo -xregs=frameptr ;;
1850 -fPIC) echo -KPIC -xcode=pic32 ;;
1851 -W*,*) echo $flag ;;
1852 -f*-*|-W*) ;;
1853 *) echo $flag ;;
1854 esac
1855 done
1856 }
1857 fi
1858
1859 test -n "$cc_type" && enable $cc_type || echolog "Unknown C compiler $cc"
1860
1861 : ${as_default:=$cc}
1862 : ${dep_cc_default:=$cc}
1863 : ${ld_default:=$cc}
1864 set_default ar as dep_cc ld
1865
1866 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
1867 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
1868
1869 add_cflags $extra_cflags
1870 add_asflags $extra_cflags
1871
1872 if test -n "$sysroot"; then
1873 case "$cc_type" in
1874 gcc)
1875 add_cppflags --sysroot="$sysroot"
1876 add_ldflags --sysroot="$sysroot"
1877 ;;
1878 tms470)
1879 add_cppflags -I"$sysinclude"
1880 add_ldflags --sysroot="$sysroot"
1881 ;;
1882 clang)
1883 add_cppflags -isysroot "$sysroot"
1884 add_ldflags -isysroot "$sysroot"
1885 ;;
1886 esac
1887 fi
1888
1889 if test "$cpu" = host; then
1890 enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
1891
1892 case "$cc_type" in
1893 gcc)
1894 check_native(){
1895 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
1896 sed -n "/$1=/{
1897 s/.*$1=\\([^ ]*\\).*/\\1/
1898 p
1899 q
1900 }" $TMPE
1901 }
1902 cpu=$(check_native -march || check_native -mcpu)
1903 ;;
1904 esac
1905
1906 test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
1907 fi
1908
1909 # Deal with common $arch aliases
1910 case "$arch" in
1911 arm*)
1912 arch="arm"
1913 ;;
1914 mips|mipsel|IP*)
1915 arch="mips"
1916 ;;
1917 mips64*)
1918 arch="mips"
1919 subarch="mips64"
1920 ;;
1921 parisc|hppa)
1922 arch="parisc"
1923 ;;
1924 parisc64|hppa64)
1925 arch="parisc"
1926 subarch="parisc64"
1927 ;;
1928 "Power Macintosh"|ppc|powerpc)
1929 arch="ppc"
1930 ;;
1931 ppc64|powerpc64)
1932 arch="ppc"
1933 subarch="ppc64"
1934 ;;
1935 s390|s390x)
1936 arch="s390"
1937 ;;
1938 sh4|sh)
1939 arch="sh4"
1940 ;;
1941 sun4u|sparc64)
1942 arch="sparc"
1943 subarch="sparc64"
1944 ;;
1945 i[3-6]86|i86pc|BePC|x86_64|amd64)
1946 arch="x86"
1947 ;;
1948 esac
1949
1950 is_in $arch $ARCH_LIST || echo "WARNING: unknown arch $arch"
1951 enable $arch
1952
1953 # Add processor-specific flags
1954 if test "$cpu" = generic; then
1955 : do nothing
1956 elif enabled ppc; then
1957
1958 case $(tolower $cpu) in
1959 601|ppc601|powerpc601)
1960 cpuflags="-mcpu=601"
1961 disable altivec
1962 ;;
1963 603*|ppc603*|powerpc603*)
1964 cpuflags="-mcpu=603"
1965 disable altivec
1966 ;;
1967 604*|ppc604*|powerpc604*)
1968 cpuflags="-mcpu=604"
1969 disable altivec
1970 ;;
1971 g3|75*|ppc75*|powerpc75*)
1972 cpuflags="-mcpu=750 -mpowerpc-gfxopt"
1973 disable altivec
1974 ;;
1975 g4|745*|ppc745*|powerpc745*)
1976 cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
1977 ;;
1978 74*|ppc74*|powerpc74*)
1979 cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
1980 ;;
1981 g5|970|ppc970|powerpc970|power4*)
1982 cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
1983 ;;
1984 cell)
1985 cpuflags="-mcpu=cell"
1986 enable ldbrx
1987 ;;
1988 e500v2)
1989 cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
1990 disable altivec
1991 ;;
1992 e500)
1993 cpuflags="-mcpu=8540 -mhard-float"
1994 disable altivec
1995 ;;
1996 esac
1997
1998 elif enabled x86; then
1999
2000 case $cpu in
2001 i[345]86|pentium)
2002 cpuflags="-march=$cpu"
2003 disable mmx
2004 ;;
2005 # targets that do NOT support conditional mov (cmov)
2006 pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2007 cpuflags="-march=$cpu"
2008 disable cmov
2009 ;;
2010 # targets that do support conditional mov (cmov)
2011 i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64|k8|opteron|athlon-fx|core2|amdfam10)
2012 cpuflags="-march=$cpu"
2013 enable cmov
2014 enable fast_cmov
2015 ;;
2016 # targets that do support conditional mov but on which it's slow
2017 pentium4|pentium4m|prescott|nocona)
2018 cpuflags="-march=$cpu"
2019 enable cmov
2020 disable fast_cmov
2021 ;;
2022 esac
2023
2024 elif enabled sparc; then
2025
2026 case $cpu in
2027 niagara)
2028 cpuflags="-mcpu=$cpu"
2029 disable vis
2030 ;;
2031 sparc64)
2032 cpuflags="-mcpu=v9"
2033 ;;
2034 esac
2035
2036 elif enabled arm; then
2037
2038 case $cpu in
2039 armv*)
2040 cpuflags="-march=$cpu"
2041 ;;
2042 *)
2043 cpuflags="-mcpu=$cpu"
2044 ;;
2045 esac
2046
2047 elif enabled alpha; then
2048
2049 enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2050
2051 elif enabled bfin; then
2052
2053 cpuflags="-mcpu=$cpu"
2054
2055 elif enabled mips; then
2056
2057 cpuflags="-march=$cpu"
2058
2059 elif enabled avr32; then
2060
2061 case $cpu in
2062 ap7[02]0[0-2])
2063 subarch="avr32_ap"
2064 cpuflags="-mpart=$cpu"
2065 ;;
2066 ap)
2067 subarch="avr32_ap"
2068 cpuflags="-march=$cpu"
2069 ;;
2070 uc3[ab]*)
2071 subarch="avr32_uc"
2072 cpuflags="-mcpu=$cpu"
2073 ;;
2074 uc)
2075 subarch="avr32_uc"
2076 cpuflags="-march=$cpu"
2077 ;;
2078 esac
2079
2080 fi
2081
2082 add_cflags $cpuflags
2083 add_asflags $cpuflags
2084
2085 # compiler sanity check
2086 check_exec <<EOF
2087 int main(void){ return 0; }
2088 EOF
2089 if test "$?" != 0; then
2090 echo "$cc is unable to create an executable file."
2091 if test -z "$cross_prefix" && ! enabled cross_compile ; then
2092 echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2093 echo "Only do this if you know what cross compiling means."
2094 fi
2095 die "C compiler test failed."
2096 fi
2097
2098 add_cppflags -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112
2099 check_cflags -std=c99
2100 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2101 #include <stdlib.h>
2102 EOF
2103 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2104 #include <stdlib.h>
2105 EOF
2106
2107 check_host_cflags -std=c99
2108
2109 case "$arch" in
2110 alpha|ia64|mips|parisc|sparc)
2111 spic=$shared
2112 ;;
2113 x86)
2114 subarch="x86_32"
2115 check_cc <<EOF && subarch="x86_64"
2116 int test[(int)sizeof(char*) - 7];
2117 EOF
2118 if test "$subarch" = "x86_64"; then
2119 spic=$shared
2120 fi
2121 ;;
2122 esac
2123
2124 enable $subarch
2125 enabled spic && enable pic
2126
2127 # OS specific
2128 case $target_os in
2129 beos|haiku|zeta)
2130 prefix_default="$HOME/config"
2131 # 3 gcc releases known for BeOS, each with ugly bugs
2132 gcc_version="$($cc -v 2>&1 | grep version | cut -d ' ' -f3-)"
2133 case "$gcc_version" in
2134 2.9-beos-991026*|2.9-beos-000224*) echo "R5/GG gcc"
2135 disable mmx
2136 ;;
2137 *20010315*) echo "BeBits gcc"
2138 add_cflags -fno-expensive-optimizations
2139 ;;
2140 esac
2141 SHFLAGS=-nostart
2142 # enable BeOS things
2143 enable audio_beos
2144 # no need for libm, but the inet stuff
2145 # Check for BONE
2146 # XXX: actually should check for NOT net_server
2147 if echo $BEINCLUDES | grep -q 'headers/be/bone'; then
2148 network_extralibs="-lbind -lsocket"
2149 else
2150 enable beos_netserver
2151 network_extralibs="-lnet"
2152 fi ;;
2153 sunos)
2154 FFSERVERLDFLAGS=""
2155 SHFLAGS='-shared -Wl,-h,$$(@F)'
2156 enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2157 network_extralibs="-lsocket -lnsl"
2158 add_cppflags -D__EXTENSIONS__
2159 nm_opts='-P -g'
2160 ;;
2161 netbsd)
2162 oss_indev_extralibs="-lossaudio"
2163 oss_outdev_extralibs="-lossaudio"
2164 add_cppflags -D_XOPEN_SOURCE=600
2165 ;;
2166 openbsd)
2167 enable malloc_aligned
2168 # On OpenBSD 4.5. the compiler does not use PIC unless
2169 # explicitly using -fPIC. FFmpeg builds fine without PIC,
2170 # however the generated executable will not do anything
2171 # (simply quits with exit-code 1, no crash, no output).
2172 # Thus explicitly enable PIC here.
2173 enable pic
2174 SHFLAGS='-shared'
2175 oss_indev_extralibs="-lossaudio"
2176 oss_outdev_extralibs="-lossaudio"
2177 ;;
2178 freebsd|dragonfly)
2179 enable malloc_aligned
2180 ;;
2181 bsd/os)
2182 osextralibs="-lpoll -lgnugetopt"
2183 strip="strip -d"
2184 ;;
2185 darwin)
2186 enable malloc_aligned
2187 SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR) -Wl,-read_only_relocs,suppress'
2188 strip="strip -x"
2189 FFLDFLAGS="-Wl,-dynamic,-search_paths_first"
2190 SLIBSUF=".dylib"
2191 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2192 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2193 FFSERVERLDFLAGS=-Wl,-bind_at_load
2194 objformat="macho"
2195 enabled x86_64 && objformat="macho64"
2196 enabled_any pic shared ||
2197 { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2198 ;;
2199 mingw32*)
2200 if test $target_os = "mingw32ce"; then
2201 disable network
2202 else
2203 target_os=mingw32
2204 fi
2205 LIBTARGET=i386
2206 if enabled x86_64; then
2207 enable malloc_aligned
2208 LIBTARGET=x64
2209 elif enabled arm; then
2210 LIBTARGET=arm
2211 fi
2212 shlibdir_default="$bindir_default"
2213 disable ffserver
2214 SLIBPREF=""
2215 SLIBSUF=".dll"
2216 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2217 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2218 SLIB_EXTRA_CMD='-lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)'
2219 SLIB_INSTALL_EXTRA_CMD='-install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"; \
2220 install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)"; \
2221 install -d "$(LIBDIR)"; \
2222 install -m 644 $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) "$(LIBDIR)/lib$(SLIBNAME:$(SLIBSUF)=.dll.a)"'
2223 SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"'
2224 SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
2225 objformat="win32"
2226 enable dos_paths
2227 check_cflags -fno-common
2228 if ! enabled x86_64; then
2229 check_cpp_condition _mingw.h "(__MINGW32_MAJOR_VERSION > 3) || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2230 die "ERROR: MinGW runtime version must be >= 3.15."
2231 enabled_any avisynth vfwcap_indev &&
2232 { check_cpp_condition w32api.h "(__W32API_MAJOR_VERSION > 3) || (__W32API_MAJOR_VERSION == 3 && __W32API_MINOR_VERSION >= 13)" ||
2233 die "ERROR: avisynth and vfwcap_indev require w32api version 3.13 or later."; }
2234 fi
2235 ;;
2236 cygwin*)
2237 target_os=cygwin
2238 shlibdir_default="$bindir_default"
2239 SLIBPREF="cyg"
2240 SLIBSUF=".dll"
2241 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2242 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2243 SHFLAGS='-shared -Wl,--enable-auto-image-base'
2244 objformat="win32"
2245 enable dos_paths
2246 check_cflags -fno-common
2247 ;;
2248 *-dos|freedos|opendos)
2249 disable ffplay ffserver
2250 disable $INDEV_LIST $OUTDEV_LIST
2251 network_extralibs="-lsocket"
2252 objformat="coff"
2253 enable dos_paths
2254 ;;
2255 linux)
2256 enable dv1394
2257 ;;
2258 irix*)
2259 target_os=irix
2260 ranlib="echo ignoring ranlib"
2261 ;;
2262 os/2*)
2263 strip="lxlite"
2264 ln_s="cp -f"
2265 FFLDFLAGS="-Zomf -Zbin-files -Zargs-wild -Zmap"
2266 SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2267 FFSERVERLDFLAGS=""
2268 LIBSUF="_s.a"
2269 SLIBPREF=""
2270 SLIBSUF=".dll"
2271 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2272 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2273 SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2274 echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2275 echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2276 echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2277 echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2278 emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2279 SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2280 emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2281 SLIB_INSTALL_EXTRA_CMD='install -m 644 $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib "$(LIBDIR)"'
2282 SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.a "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.lib'
2283 enable dos_paths
2284 ;;
2285 gnu/kfreebsd)
2286 ;;
2287 gnu)
2288 ;;
2289 none)
2290 ;;
2291 *)
2292 die "Unknown OS '$target_os'."
2293 ;;
2294 esac
2295
2296 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2297
2298 set_default $PATHS_LIST
2299
2300 add_extralibs $osextralibs
2301
2302 # Combine FFLDFLAGS and the LDFLAGS environment variable.
2303 LDFLAGS="$FFLDFLAGS $LDFLAGS"
2304
2305 # we need to build at least one lib type
2306 if ! enabled_any static shared; then
2307 cat <<EOF
2308 At least one library type must be built.
2309 Specify --enable-static to build the static libraries or --enable-shared to
2310 build the shared libraries as well. To only build the shared libraries specify
2311 --disable-static in addition to --enable-shared.
2312 EOF
2313 exit 1;
2314 fi
2315
2316 disabled static && LIBNAME=""
2317
2318 if enabled_any libfaad libfaadbin ; then
2319 if check_header faad.h; then
2320 check_cc <<EOF
2321 #include <faad.h>
2322 #ifndef FAAD2_VERSION
2323 ok faad1
2324 #endif
2325 int main(void) { return 0; }
2326 EOF
2327 test $? = 0 && enable libfaad2
2328 else
2329 die "FAAD test failed."
2330 fi
2331 fi
2332
2333
2334 die_license_disabled() {
2335 enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2336 }
2337
2338 die_license_disabled gpl libfaad2
2339 die_license_disabled gpl libx264
2340 die_license_disabled gpl libxvid
2341 die_license_disabled gpl postproc
2342 die_license_disabled gpl x11grab
2343
2344 die_license_disabled nonfree libfaac
2345 die_license_disabled nonfree libvpx
2346
2347 die_license_disabled version3 libopencore_amrnb
2348 die_license_disabled version3 libopencore_amrwb
2349
2350 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2351
2352 check_deps $ARCH_EXT_LIST
2353
2354 disabled optimizations || check_cflags -fomit-frame-pointer
2355
2356 enable_pic() {
2357 enable pic
2358 add_cppflags -DPIC
2359 add_cflags -fPIC
2360 add_asflags -fPIC
2361 }
2362
2363 enabled pic && enable_pic
2364
2365 check_cc <<EOF || die "Symbol mangling check failed."
2366 int ff_extern;
2367 EOF
2368 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2369 extern_prefix=${sym%%ff_extern*}
2370
2371 check_cc <<EOF && enable inline_asm
2372 void foo(void) { __asm__ volatile ("" ::); }
2373 EOF
2374
2375 _restrict=
2376 for restrict_keyword in restrict __restrict__ __restrict; do
2377 check_cc <<EOF && _restrict=$restrict_keyword && break
2378 void foo(char * $restrict_keyword p);
2379 EOF
2380 done
2381
2382 check_cc <<EOF && enable attribute_packed
2383 struct { int x; } __attribute__((packed)) x;
2384 EOF
2385
2386 check_cc <<EOF && enable attribute_may_alias
2387 union { int x; } __attribute__((may_alias)) x;
2388 EOF
2389
2390 check_cc <<EOF || die "endian test failed"
2391 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2392 EOF
2393 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2394
2395 if enabled alpha; then
2396
2397 check_cflags -mieee
2398
2399 elif enabled arm; then
2400
2401 check_cflags -marm
2402
2403 check_ld <<EOF && enable vfp_args
2404 __asm__ (".eabi_attribute 28, 1");
2405 int main(void) { return 0; }
2406 EOF
2407
2408 # We have to check if pld is a nop and disable it.
2409 check_asm pld '"pld [r0]"'
2410
2411 enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2412 enabled armv6 && check_asm armv6 '"sadd16 r0, r0, r0"'
2413 enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2414 enabled armvfp && check_asm armvfp '"fadds s0, s0, s0"'
2415 enabled iwmmxt && check_asm iwmmxt '"wunpckelub wr6, wr4"'
2416 enabled neon && check_asm neon '"vadd.i16 q0, q0, q0"'
2417
2418 enabled_all armv6t2 shared !pic && enable_pic
2419
2420 elif enabled mips; then
2421
2422 check_asm loongson '"dmult.g $1, $2, $3"'
2423 enabled mmi && check_asm mmi '"lq $2, 0($2)"'
2424
2425 elif enabled ppc; then
2426
2427 enable local_aligned_8 local_aligned_16
2428
2429 check_asm dcbzl '"dcbzl 0, 1"'
2430 check_asm ppc4xx '"maclhw r10, r11, r12"'
2431 check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2432
2433 # AltiVec flags: The FSF version of GCC differs from the Apple version
2434 if enabled altivec; then
2435 check_cflags -maltivec -mabi=altivec &&
2436 { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2437 check_cflags -faltivec
2438
2439 # check if our compiler supports Motorola AltiVec C API
2440 check_cc <<EOF || disable altivec
2441 $inc_altivec_h
2442 int main(void) {
2443 vector signed int v1, v2, v3;
2444 v1 = vec_add(v2,v3);
2445 return 0;
2446 }
2447 EOF
2448
2449 # check if our compiler supports braces for vector declarations
2450 check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2451 $inc_altivec_h
2452 int main (void) { (vector int) {1}; return 0; }
2453 EOF
2454 fi
2455
2456 elif enabled sparc; then
2457
2458 enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2459 add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2460
2461 elif enabled x86; then
2462
2463 enable local_aligned_8 local_aligned_16
2464
2465 # check whether EBP is available on x86
2466 # As 'i' is stored on the stack, this program will crash
2467 # if the base pointer is used to access it because the
2468 # base pointer is cleared in the inline assembly code.
2469 check_exec_crash <<EOF && enable ebp_available
2470 volatile int i=0;
2471 __asm__ volatile (
2472 "xorl %%ebp, %%ebp"
2473 ::: "%ebp");
2474 return i;
2475 EOF
2476
2477 # check whether EBX is available on x86
2478 check_asm ebx_available '""::"b"(0)' &&
2479 check_asm ebx_available '"":::"%ebx"'
2480
2481 # check whether more than 10 operands are supported
2482 check_cc <<EOF && enable ten_operands
2483 int main(void) {
2484 int x=0;
2485 __asm__ volatile(
2486 ""
2487 :"+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x)
2488 );
2489 return 0;
2490 }
2491 EOF
2492
2493 # check whether binutils is new enough to compile SSSE3/MMX2
2494 enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2495 enabled mmx2 && check_asm mmx2 '"pmaxub %mm0, %mm1"'
2496
2497 check_asm bswap '"bswap %%eax" ::: "%eax"'
2498
2499 YASMFLAGS="-f $objformat -DARCH_$(toupper $subarch)"
2500 enabled x86_64 && append YASMFLAGS "-m amd64"
2501 enabled pic && append YASMFLAGS "-DPIC"
2502 test -n "$extern_prefix" && append YASMFLAGS "-DPREFIX"
2503 case "$objformat" in
2504 elf) enabled debug && append YASMFLAGS "-g dwarf2" ;;
2505 esac
2506 disabled yasm || { check_yasm "pabsw xmm0, xmm0" && enable yasm; }
2507
2508 case "$cpu" in
2509 athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2510 disable fast_clz
2511 ;;
2512 esac
2513
2514 fi
2515
2516 if check_func dlopen; then
2517 ldl=
2518 elif check_func dlopen -ldl; then
2519 ldl=-ldl
2520 fi
2521
2522 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2523 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2524
2525 check_func fork
2526 check_func getaddrinfo $network_extralibs
2527 check_func gethrtime
2528 check_func getrusage
2529 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2530 check_func inet_aton $network_extralibs
2531 check_func isatty
2532 check_func ${malloc_prefix}memalign && enable memalign
2533 check_func mkstemp
2534 check_func ${malloc_prefix}posix_memalign && enable posix_memalign
2535 check_func setrlimit
2536 check_func strerror_r
2537 check_func_headers io.h setmode
2538 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2539 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2540 check_func_headers windows.h GetProcessTimes
2541 check_func_headers windows.h VirtualAlloc
2542
2543 check_header conio.h
2544 check_header dlfcn.h
2545 check_header dxva2api.h
2546 check_header malloc.h
2547 check_header poll.h
2548 check_header sys/mman.h
2549 check_header sys/resource.h
2550 check_header sys/select.h
2551 check_header termios.h
2552 check_header vdpau/vdpau.h
2553 check_header vdpau/vdpau_x11.h
2554 check_header X11/extensions/XvMClib.h
2555
2556 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2557
2558 if ! enabled_any memalign memalign_hack posix_memalign malloc_aligned &&
2559 enabled_any $need_memalign ; then
2560 die "Error, no aligned memory allocator but SSE enabled, disable it or use --enable-memalign-hack."
2561 fi
2562
2563 disabled zlib || check_lib zlib.h zlibVersion -lz || disable zlib
2564 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2565
2566 # check for some common methods of building with pthread support
2567 # do this before the optional library checks as some of them require pthreads
2568 if enabled pthreads; then
2569 if check_func pthread_create; then
2570 :
2571 elif check_func pthread_create -pthread; then
2572 add_cflags -pthread
2573 add_extralibs -pthread
2574 elif check_func pthread_create -pthreads; then
2575 add_cflags -pthreads
2576 add_extralibs -pthreads
2577 elif check_func pthread_create -lpthreadGC2; then
2578 add_extralibs -lpthreadGC2
2579 elif ! check_lib pthread.h pthread_create -lpthread; then
2580 die "ERROR: can't find pthreads library"
2581 fi
2582 fi
2583
2584 for thread in $THREADS_LIST; do
2585 if enabled $thread; then
2586 test -n "$thread_type" &&
2587 die "ERROR: Only one thread type must be selected." ||
2588 thread_type="$thread"
2589 fi
2590 done
2591
2592 check_lib math.h sin -lm
2593 disabled vaapi || check_lib va/va.h vaInitialize -lva
2594
2595 check_mathfunc exp2
2596 check_mathfunc exp2f
2597 check_mathfunc llrint
2598 check_mathfunc llrintf
2599 check_mathfunc log2
2600 check_mathfunc log2f
2601 check_mathfunc lrint
2602 check_mathfunc lrintf
2603 check_mathfunc round
2604 check_mathfunc roundf
2605 check_mathfunc truncf
2606
2607 # these are off by default, so fail if requested and not available
2608 enabled avisynth && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2609 enabled libdirac && add_cflags $(pkg-config --cflags dirac) &&
2610 require libdirac libdirac_decoder/dirac_parser.h dirac_decoder_init $(pkg-config --libs dirac) &&
2611 require libdirac libdirac_encoder/dirac_encoder.h dirac_encoder_init $(pkg-config --libs dirac)
2612 enabled libfaac && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2613 enabled libfaad && require2 libfaad faad.h faacDecOpen -lfaad
2614 enabled libgsm && require libgsm gsm/gsm.h gsm_create -lgsm
2615 enabled libmp3lame && require libmp3lame lame/lame.h lame_init -lmp3lame -lm
2616 enabled libnut && require libnut libnut.h nut_demuxer_init -lnut
2617 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb -lm
2618 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb -lm
2619 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2620 enabled librtmp && require librtmp librtmp/rtmp.h RTMP_Init -lrtmp
2621 enabled libschroedinger && add_cflags $(pkg-config --cflags schroedinger-1.0) &&
2622 require libschroedinger schroedinger/schro.h schro_init $(pkg-config --libs schroedinger-1.0)
2623 enabled libspeex && require libspeex speex/speex.h speex_decoder_init -lspeex
2624 enabled libtheora && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2625 enabled libvorbis && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2626 enabled libvpx && require2 libvpx "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver" -lvpx
2627 enabled libx264 && require libx264 x264.h x264_encoder_encode -lx264 -lm &&
2628 { check_cpp_condition x264.h "X264_BUILD >= 90" ||
2629 die "ERROR: libx264 version must be >= 0.90."; }
2630 enabled libxvid && require libxvid xvid.h xvid_global -lxvidcore
2631 enabled mlib && require mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
2632
2633 # libdc1394 check
2634 if enabled libdc1394; then
2635 { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2636 enable libdc1394_2; } ||
2637 { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
2638 enable libdc1394_1; } ||
2639 die "ERROR: No version of libdc1394 found "
2640 fi
2641
2642 SDL_CONFIG="${cross_prefix}sdl-config"
2643 if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
2644 sdl_cflags=$("${SDL_CONFIG}" --cflags)
2645 sdl_libs=$("${SDL_CONFIG}" --libs)
2646 check_func_headers SDL.h SDL_Init $sdl_cflags $sdl_libs &&
2647 check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2648 enable sdl &&
2649 check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2650 fi
2651
2652 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2653
2654 if enabled network; then
2655 check_type "sys/types.h sys/socket.h" socklen_t
2656 check_type netdb.h "struct addrinfo"
2657 check_type netinet/in.h "struct ipv6_mreq"
2658 check_type netinet/in.h "struct sockaddr_in6"
2659 check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2660 check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2661 # Prefer arpa/inet.h over winsock2
2662 if check_header arpa/inet.h ; then
2663 check_func closesocket
2664 elif check_header winsock2.h ; then
2665 check_func_headers winsock2.h closesocket -lws2 && \
2666 network_extralibs="-lws2" || \
2667 { check_func_headers winsock2.h closesocket -lws2_32 && \
2668 network_extralibs="-lws2_32"; }
2669 check_type ws2tcpip.h socklen_t
2670 check_type ws2tcpip.h "struct addrinfo"
2671 check_type ws2tcpip.h "struct ipv6_mreq"
2672 check_type ws2tcpip.h "struct sockaddr_in6"
2673 check_type ws2tcpip.h "struct sockaddr_storage"
2674 check_struct winsock2.h "struct sockaddr" sa_len
2675 else
2676 disable network
2677 fi
2678 fi
2679
2680 check_header linux/videodev.h
2681 check_header linux/videodev2.h
2682 check_header sys/videoio.h
2683
2684 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2685
2686 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2687 { check_header dev/bktr/ioctl_meteor.h &&
2688 check_header dev/bktr/ioctl_bt848.h; } ||
2689 { check_header machine/ioctl_meteor.h &&
2690 check_header machine/ioctl_bt848.h; } ||
2691 { check_header dev/video/meteor/ioctl_meteor.h &&
2692 check_header dev/video/bktr/ioctl_bt848.h; } ||
2693 check_header dev/ic/bt8xx.h
2694
2695 check_header sys/soundcard.h
2696 check_header soundcard.h
2697
2698 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
2699
2700 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack
2701
2702 enabled x11grab &&
2703 check_header X11/Xlib.h &&
2704 check_header X11/extensions/XShm.h &&
2705 check_header X11/extensions/Xfixes.h &&
2706 check_func XOpenDisplay -lX11 &&
2707 check_func XShmCreateImage -lX11 -lXext &&
2708 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
2709
2710 if ! disabled vdpau && enabled vdpau_vdpau_h; then
2711 check_cpp_condition \
2712 vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
2713 { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
2714 disable vdpau; }
2715 fi
2716
2717 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
2718
2719 # add some useful compiler flags if supported
2720 check_cflags -Wdeclaration-after-statement
2721 check_cflags -Wall
2722 check_cflags -Wno-switch
2723 check_cflags -Wdisabled-optimization
2724 check_cflags -Wpointer-arith
2725 check_cflags -Wredundant-decls
2726 check_cflags -Wno-pointer-sign
2727 check_cflags -Wcast-qual
2728 check_cflags -Wwrite-strings
2729 check_cflags -Wtype-limits
2730 check_cflags -Wundef
2731 check_cflags -Wmissing-prototypes
2732 enabled extra_warnings && check_cflags -Winline
2733
2734 # add some linker flags
2735 check_ldflags -Wl,--warn-common
2736 check_ldflags -Wl,--as-needed
2737 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'
2738 check_ldflags -Wl,-Bsymbolic
2739
2740 echo "X{};" > $TMPV
2741 test_ldflags -Wl,--version-script,$TMPV &&
2742 append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
2743
2744 if enabled small; then
2745 add_cflags $size_cflags
2746 optimizations="small"
2747 elif enabled optimizations; then
2748 add_cflags $speed_cflags
2749 else
2750 add_cflags $noopt_cflags
2751 fi
2752 check_cflags -fno-math-errno
2753 check_cflags -fno-signed-zeros
2754
2755 if enabled icc; then
2756 # Just warnings, no remarks
2757 check_cflags -w1
2758 # -wd: Disable following warnings
2759 # 144, 167, 556: -Wno-pointer-sign
2760 # 10006: ignoring unknown option -fno-signed-zeros
2761 # 10156: ignoring option '-W'; no argument required
2762 check_cflags -wd144,167,556,10006,10156
2763 # 11030: Warning unknown option --as-needed
2764 # 10156: ignoring option '-export'; no argument required
2765 check_ldflags -wd10156,11030
2766 # Allow to compile with optimizations
2767 check_ldflags -march=$cpu
2768 # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
2769 enable ebp_available
2770 elif enabled ccc; then
2771 # disable some annoying warnings
2772 add_cflags -msg_disable cvtu32to64
2773 add_cflags -msg_disable embedcomment
2774 add_cflags -msg_disable needconstext
2775 add_cflags -msg_disable nomainieee
2776 add_cflags -msg_disable ptrmismatch1
2777 add_cflags -msg_disable unreachcode
2778 elif enabled gcc; then
2779 check_cflags -fno-tree-vectorize
2780 check_cflags -Werror=implicit
2781 check_cflags -Werror=missing-prototypes
2782 elif enabled clang; then
2783 check_cflags -Qunused-arguments
2784 elif enabled armcc; then
2785 # 2523: use of inline assembler is deprecated
2786 add_cflags -Wrvct,--diag_suppress=2523
2787 add_cflags -Wrvct,--diag_suppress=1207
2788 elif enabled tms470; then
2789 add_cflags -pds=824 -pds=837
2790 fi
2791
2792 if enabled gprof; then
2793 add_cflags -p
2794 add_ldflags -p
2795 fi
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 "ARCH $arch ($cpu)"
2820 if test "$build_suffix" != ""; then
2821 echo "build suffix $build_suffix"
2822 fi
2823 if test "$extra_version" != ""; then
2824 echo "version string suffix $extra_version"
2825 fi
2826 echo "big-endian ${bigendian-no}"
2827 echo "runtime cpu detection ${runtime_cpudetect-no}"
2828 if enabled x86; then
2829 echo "yasm ${yasm-no}"
2830 echo "MMX enabled ${mmx-no}"
2831 echo "MMX2 enabled ${mmx2-no}"
2832 echo "3DNow! enabled ${amd3dnow-no}"
2833 echo "3DNow! extended enabled ${amd3dnowext-no}"
2834 echo "SSE enabled ${sse-no}"
2835 echo "SSSE3 enabled ${ssse3-no}"
2836 echo "CMOV enabled ${cmov-no}"
2837 echo "CMOV is fast ${fast_cmov-no}"
2838 echo "EBX available ${ebx_available-no}"
2839 echo "EBP available ${ebp_available-no}"
2840 echo "10 operands supported ${ten_operands-no}"
2841 fi
2842 if enabled arm; then
2843 echo "ARMv5TE enabled ${armv5te-no}"
2844 echo "ARMv6 enabled ${armv6-no}"
2845 echo "ARMv6T2 enabled ${armv6t2-no}"
2846 echo "ARM VFP enabled ${armvfp-no}"
2847 echo "IWMMXT enabled ${iwmmxt-no}"
2848 echo "NEON enabled ${neon-no}"
2849 fi
2850 if enabled mips; then
2851 echo "MMI enabled ${mmi-no}"
2852 fi
2853 if enabled ppc; then
2854 echo "AltiVec enabled ${altivec-no}"
2855 echo "PPC 4xx optimizations ${ppc4xx-no}"
2856 echo "dcbzl available ${dcbzl-no}"
2857 echo "performance report ${powerpc_perf-no}"
2858 fi
2859 if enabled sparc; then
2860 echo "VIS enabled ${vis-no}"
2861 fi
2862 echo "gprof enabled ${gprof-no}"
2863 echo "debug symbols ${debug-no}"
2864 echo "strip symbols ${stripping-no}"
2865 echo "optimizations ${optimizations-no}"
2866 echo "static ${static-no}"
2867 echo "shared ${shared-no}"
2868 echo "postprocessing support ${postproc-no}"
2869 echo "new filter support ${avfilter-no}"
2870 echo "filters using lavformat ${avfilter_lavf-no}"
2871 echo "network support ${network-no}"
2872 echo "threading support ${thread_type-no}"
2873 echo "SDL support ${sdl-no}"
2874 echo "Sun medialib support ${mlib-no}"
2875 echo "AVISynth enabled ${avisynth-no}"
2876 echo "libdc1394 support ${libdc1394-no}"
2877 echo "libdirac enabled ${libdirac-no}"
2878 echo "libfaac enabled ${libfaac-no}"
2879 echo "libfaad enabled ${libfaad-no}"
2880 echo "libfaad dlopened ${libfaadbin-no}"
2881 echo "libgsm enabled ${libgsm-no}"
2882 echo "libmp3lame enabled ${libmp3lame-no}"
2883 echo "libnut enabled ${libnut-no}"
2884 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
2885 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
2886 echo "libopenjpeg enabled ${libopenjpeg-no}"
2887 echo "librtmp enabled ${librtmp-no}"
2888 echo "libschroedinger enabled ${libschroedinger-no}"
2889 echo "libspeex enabled ${libspeex-no}"
2890 echo "libtheora enabled ${libtheora-no}"
2891 echo "libvorbis enabled ${libvorbis-no}"
2892 echo "libvpx enabled ${libvpx-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 cat > $TMPH <<EOF
3051 /* Automatically generated by configure - do not modify! */
3052 #ifndef FFMPEG_CONFIG_H
3053 #define FFMPEG_CONFIG_H
3054 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
3055 #define FFMPEG_LICENSE "$(c_escape $license)"
3056 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
3057 #define CC_TYPE "$cc_type"
3058 #define CC_VERSION $cc_version
3059 #define restrict $_restrict
3060 #define ASMALIGN(ZEROBITS) ".p2align " #ZEROBITS "\\n\\t"
3061 #define EXTERN_PREFIX "${extern_prefix}"
3062 #define EXTERN_ASM ${extern_prefix}
3063 EOF
3064
3065 test -n "$malloc_prefix" &&
3066 echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3067
3068 if enabled small || disabled optimizations; then
3069 echo "#undef av_always_inline" >> $TMPH
3070 echo "#define av_always_inline" >> $TMPH
3071 fi
3072
3073 print_config ARCH_ $TMPH config.mak $ARCH_LIST
3074 print_config HAVE_ $TMPH config.mak $HAVE_LIST
3075 print_config CONFIG_ $TMPH config.mak $CONFIG_LIST \
3076 $CONFIG_EXTRA \
3077 $DECODER_LIST \
3078 $ENCODER_LIST \
3079 $HWACCEL_LIST \
3080 $PARSER_LIST \
3081 $BSF_LIST \
3082 $DEMUXER_LIST \
3083 $MUXER_LIST \
3084 $FILTER_LIST \
3085 $PROTOCOL_LIST \
3086 $INDEV_LIST \
3087 $OUTDEV_LIST \
3088
3089 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
3090 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
3091
3092 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3093 cp_if_changed $TMPH config.h
3094
3095 cat > $TMPH <<EOF
3096 /* Generated by ffconf */
3097 #ifndef AVUTIL_AVCONFIG_H
3098 #define AVUTIL_AVCONFIG_H
3099 EOF
3100
3101 print_config AV_HAVE_ $TMPH /dev/null $HAVE_LIST_PUB
3102
3103 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3104
3105 cp_if_changed $TMPH libavutil/avconfig.h
3106
3107 # build pkg-config files
3108
3109 pkgconfig_generate(){
3110 name=$1
3111 shortname=${name#lib}${build_suffix}
3112 comment=$2
3113 version=$3
3114 libs=$4
3115 requires=$5
3116 cat <<EOF > $name/$name.pc
3117 prefix=$prefix
3118 exec_prefix=\${prefix}
3119 libdir=$libdir
3120 includedir=$incdir
3121
3122 Name: $name
3123 Description: $comment
3124 Version: $version
3125 Requires: $(enabled shared || echo $requires)
3126 Requires.private: $(enabled shared && echo $requires)
3127 Conflicts:
3128 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3129 Libs.private: $(enabled shared && echo $libs)
3130 Cflags: -I\${includedir}
3131 EOF
3132 cat <<EOF > $name/$name-uninstalled.pc
3133 prefix=
3134 exec_prefix=
3135 libdir=\${pcfiledir}
3136 includedir=${source_path}
3137
3138 Name: $name
3139 Description: $comment
3140 Version: $version
3141 Requires: $requires
3142 Conflicts:
3143 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3144 Cflags: -I\${includedir}
3145 EOF
3146 }
3147
3148 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION"
3149 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3150 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3151 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3152 enabled avfilter &&
3153 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3154 enabled postproc &&
3155 pkgconfig_generate libpostproc "FFmpeg post processing library" "$LIBPOSTPROC_VERSION"
3156 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"