build: more fine-grained dependencies for documentation build tools
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18 echo "Trying shell $1"
19 type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30 echo "Broken shell detected. Trying alternatives."
31 export FF_CONF_EXEC
32 if test "0$FF_CONF_EXEC" -lt 1; then
33 FF_CONF_EXEC=1
34 try_exec bash "$0" "$@"
35 fi
36 if test "0$FF_CONF_EXEC" -lt 2; then
37 FF_CONF_EXEC=2
38 try_exec ksh "$0" "$@"
39 fi
40 if test "0$FF_CONF_EXEC" -lt 3; then
41 FF_CONF_EXEC=3
42 try_exec /usr/xpg4/bin/sh "$0" "$@"
43 fi
44 echo "No compatible shell script interpreter found."
45 echo "This configure script requires a POSIX-compatible shell"
46 echo "such as bash or ksh."
47 echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48 echo "Instead, install a working POSIX-compatible shell."
49 echo "Disabling this configure test will create a broken Libav."
50 if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51 echo "This bash version ($BASH_VERSION) is broken on your platform."
52 echo "Upgrade to a later version if available."
53 fi
54 exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60 cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65 --help print this message
66 --list-decoders show all available decoders
67 --list-encoders show all available encoders
68 --list-hwaccels show all available hardware accelerators
69 --list-demuxers show all available demuxers
70 --list-muxers show all available muxers
71 --list-parsers show all available parsers
72 --list-protocols show all available protocols
73 --list-bsfs show all available bitstream filters
74 --list-indevs show all available input devices
75 --list-outdevs show all available output devices
76 --list-filters show all available filters
77
78 Standard options:
79 --logfile=FILE log tests and output to FILE [config.log]
80 --disable-logging do not log configure debug information
81 --prefix=PREFIX install in PREFIX [$prefix]
82 --bindir=DIR install binaries in DIR [PREFIX/bin]
83 --datadir=DIR install data files in DIR [PREFIX/share/avconv]
84 --docdir=DIR install documentation in DIR [PREFIX/share/doc/libav]
85 --libdir=DIR install libs in DIR [PREFIX/lib]
86 --shlibdir=DIR install shared libs in DIR [PREFIX/lib]
87 --incdir=DIR install includes in DIR [PREFIX/include]
88 --mandir=DIR install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91 --enable-gpl allow use of GPL code, the resulting libs
92 and binaries will be under GPL [no]
93 --enable-version3 upgrade (L)GPL to version 3 [no]
94 --enable-nonfree allow use of nonfree code, the resulting libs
95 and binaries will be unredistributable [no]
96
97 Configuration options:
98 --disable-static do not build static libraries [no]
99 --enable-shared build shared libraries [no]
100 --enable-small optimize for size instead of speed
101 --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
102 --enable-gray enable full grayscale support (slower color)
103 --disable-swscale-alpha disable alpha channel support in swscale
104 --disable-all disable building components, libraries and programs
105
106 Program options:
107 --disable-programs do not build command line programs
108 --disable-avconv disable avconv build
109 --disable-avplay disable avplay build
110 --disable-avprobe disable avprobe build
111 --disable-avserver disable avserver build
112
113 Component options:
114 --disable-doc do not build documentation
115 --disable-avdevice disable libavdevice build
116 --disable-avcodec disable libavcodec build
117 --disable-avformat disable libavformat build
118 --disable-avutil disable libavutil build
119 --disable-swscale disable libswscale build
120 --disable-avfilter disable video filter support [no]
121 --disable-avresample disable libavresample build [no]
122 --disable-pthreads disable pthreads [auto]
123 --disable-w32threads disable Win32 threads [auto]
124 --disable-network disable network support [no]
125 --disable-dct disable DCT code
126 --disable-error-resilience disable error resilience code
127 --disable-lsp disable LSP code
128 --disable-lzo disable LZO decoder code
129 --disable-mdct disable MDCT code
130 --disable-rdft disable RDFT code
131 --disable-fft disable FFT code
132
133 Hardware accelerators:
134 --enable-dxva2 enable DXVA2 code
135 --enable-vaapi enable VAAPI code
136 --enable-vda enable VDA code
137 --enable-vdpau enable VDPAU code
138
139 Individual component options:
140 --disable-everything disable all components listed below
141 --disable-encoder=NAME disable encoder NAME
142 --enable-encoder=NAME enable encoder NAME
143 --disable-encoders disable all encoders
144 --disable-decoder=NAME disable decoder NAME
145 --enable-decoder=NAME enable decoder NAME
146 --disable-decoders disable all decoders
147 --disable-hwaccel=NAME disable hwaccel NAME
148 --enable-hwaccel=NAME enable hwaccel NAME
149 --disable-hwaccels disable all hwaccels
150 --disable-muxer=NAME disable muxer NAME
151 --enable-muxer=NAME enable muxer NAME
152 --disable-muxers disable all muxers
153 --disable-demuxer=NAME disable demuxer NAME
154 --enable-demuxer=NAME enable demuxer NAME
155 --disable-demuxers disable all demuxers
156 --enable-parser=NAME enable parser NAME
157 --disable-parser=NAME disable parser NAME
158 --disable-parsers disable all parsers
159 --enable-bsf=NAME enable bitstream filter NAME
160 --disable-bsf=NAME disable bitstream filter NAME
161 --disable-bsfs disable all bitstream filters
162 --enable-protocol=NAME enable protocol NAME
163 --disable-protocol=NAME disable protocol NAME
164 --disable-protocols disable all protocols
165 --enable-indev=NAME enable input device NAME
166 --disable-indev=NAME disable input device NAME
167 --disable-indevs disable input devices
168 --enable-outdev=NAME enable output device NAME
169 --disable-outdev=NAME disable output device NAME
170 --disable-outdevs disable output devices
171 --disable-devices disable all devices
172 --enable-filter=NAME enable filter NAME
173 --disable-filter=NAME disable filter NAME
174 --disable-filters disable all filters
175
176 External library support:
177 --enable-avisynth enable reading of AviSynth script files [no]
178 --enable-bzlib enable bzlib [autodetect]
179 --enable-frei0r enable frei0r video filtering
180 --enable-gnutls enable gnutls [no]
181 --enable-libcdio enable audio CD grabbing with libcdio
182 --enable-libdc1394 enable IIDC-1394 grabbing using libdc1394
183 and libraw1394 [no]
184 --enable-libfaac enable AAC encoding via libfaac [no]
185 --enable-libfdk-aac enable AAC de/encoding via libfdk-aac [no]
186 --enable-libfreetype enable libfreetype [no]
187 --enable-libgsm enable GSM de/encoding via libgsm [no]
188 --enable-libilbc enable iLBC de/encoding via libilbc [no]
189 --enable-libmp3lame enable MP3 encoding via libmp3lame [no]
190 --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
191 --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
192 --enable-libopencv enable video filtering via libopencv [no]
193 --enable-libopenjpeg enable JPEG 2000 de/encoding via OpenJPEG [no]
194 --enable-libopus enable Opus decoding via libopus [no]
195 --enable-libpulse enable Pulseaudio input via libpulse [no]
196 --enable-librtmp enable RTMP[E] support via librtmp [no]
197 --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
198 --enable-libspeex enable Speex de/encoding via libspeex [no]
199 --enable-libtheora enable Theora encoding via libtheora [no]
200 --enable-libvo-aacenc enable AAC encoding via libvo-aacenc [no]
201 --enable-libvo-amrwbenc enable AMR-WB encoding via libvo-amrwbenc [no]
202 --enable-libvorbis enable Vorbis encoding via libvorbis [no]
203 --enable-libvpx enable VP8 and VP9 de/encoding via libvpx [no]
204 --enable-libwavpack enable wavpack encoding via libwavpack [no]
205 --enable-libx264 enable H.264 encoding via x264 [no]
206 --enable-libxavs enable AVS encoding via xavs [no]
207 --enable-libxvid enable Xvid encoding via xvidcore,
208 native MPEG-4/Xvid encoder exists [no]
209 --enable-openssl enable openssl [no]
210 --enable-x11grab enable X11 grabbing [no]
211 --enable-zlib enable zlib [autodetect]
212
213 Advanced options (experts only):
214 --cross-prefix=PREFIX use PREFIX for compilation tools [$cross_prefix]
215 --enable-cross-compile assume a cross-compiler is used
216 --sysroot=PATH root of cross-build tree
217 --sysinclude=PATH location of cross-build system headers
218 --target-os=OS compiler targets OS [$target_os]
219 --target-exec=CMD command to run executables on target
220 --target-path=DIR path to view of build directory on target
221 --target-samples=DIR path to samples directory on target
222 --toolchain=NAME set tool defaults according to NAME
223 --nm=NM use nm tool
224 --ar=AR use archive tool AR [$ar_default]
225 --as=AS use assembler AS [$as_default]
226 --cc=CC use C compiler CC [$cc_default]
227 --dep-cc=DEPCC use dependency generator DEPCC [$cc_default]
228 --ld=LD use linker LD
229 --host-cc=HOSTCC use host C compiler HOSTCC
230 --host-cflags=HCFLAGS use HCFLAGS when compiling for host
231 --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
232 --host-ld=HOSTLD use host linker HOSTLD
233 --host-ldflags=HLDFLAGS use HLDFLAGS when linking for host
234 --host-libs=HLIBS use libs HLIBS when linking for host
235 --host-os=OS compiler host OS [$target_os]
236 --extra-cflags=ECFLAGS add ECFLAGS to CFLAGS [$CFLAGS]
237 --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
238 --extra-libs=ELIBS add ELIBS [$ELIBS]
239 --extra-version=STRING version string suffix []
240 --optflags=OPTFLAGS override optimization-related compiler flags
241 --build-suffix=SUFFIX library name suffix []
242 --malloc-prefix=PREFIX prefix malloc and related names with PREFIX
243 --arch=ARCH select architecture [$arch]
244 --cpu=CPU select the minimum required CPU (affects
245 instruction selection, may crash on older CPUs)
246 --enable-pic build position-independent code
247 --enable-sram allow use of on-chip SRAM
248 --enable-thumb compile for Thumb instruction set
249 --disable-symver disable symbol versioning
250 --enable-hardcoded-tables use hardcoded tables instead of runtime generation
251 --disable-safe-bitstream-reader
252 disable buffer boundary checking in bitreaders
253 (faster, but may crash)
254 --enable-memalign-hack emulate memalign, interferes with memory debuggers
255 --enable-lto use link-time optimization
256
257 Optimization options (experts only):
258 --disable-asm disable all assembler optimizations
259 --disable-altivec disable AltiVec optimizations
260 --disable-amd3dnow disable 3DNow! optimizations
261 --disable-amd3dnowext disable 3DNow! extended optimizations
262 --disable-mmx disable MMX optimizations
263 --disable-mmxext disable MMXEXT optimizations
264 --disable-sse disable SSE optimizations
265 --disable-sse2 disable SSE2 optimizations
266 --disable-sse3 disable SSE3 optimizations
267 --disable-ssse3 disable SSSE3 optimizations
268 --disable-sse4 disable SSE4 optimizations
269 --disable-sse42 disable SSE4.2 optimizations
270 --disable-avx disable AVX optimizations
271 --disable-fma4 disable FMA4 optimizations
272 --disable-avx2 disable AVX2 optimizations
273 --disable-armv5te disable armv5te optimizations
274 --disable-armv6 disable armv6 optimizations
275 --disable-armv6t2 disable armv6t2 optimizations
276 --disable-vfp disable VFP optimizations
277 --disable-neon disable NEON optimizations
278 --disable-vis disable VIS optimizations
279 --disable-inline-asm disable use of inline assembler
280 --disable-yasm disable use of yasm assembler
281
282 Developer options (useful when working on Libav itself):
283 --disable-debug disable debugging symbols
284 --enable-debug=LEVEL set the debug level [$debuglevel]
285 --disable-optimizations disable compiler optimizations
286 --enable-extra-warnings enable more compiler warnings
287 --samples=PATH location of test samples for FATE, if not set use
288 \$LIBAV_SAMPLES at make invocation time.
289 --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
290 should be used only for debugging purposes)
291 --enable-random randomly enable/disable components
292 --disable-random
293 --enable-random=LIST randomly enable/disable specific components or
294 --disable-random=LIST component groups. LIST is a comma-separated list
295 of NAME[:PROB] entries where NAME is a component
296 (group) and PROB the probability associated with
297 NAME (default 0.5).
298 --random-seed=VALUE seed value for --enable/disable-random
299
300 NOTE: Object files are built at the place where configure is launched.
301 EOF
302 exit 0
303 }
304
305 quotes='""'
306
307 log(){
308 echo "$@" >> $logfile
309 }
310
311 log_file(){
312 log BEGIN $1
313 pr -n -t $1 >> $logfile
314 log END $1
315 }
316
317 echolog(){
318 log "$@"
319 echo "$@"
320 }
321
322 warn(){
323 log "WARNING: $*"
324 WARNINGS="${WARNINGS}WARNING: $*\n"
325 }
326
327 die(){
328 echolog "$@"
329 cat <<EOF
330
331 If you think configure made a mistake, make sure you are using the latest
332 version from Git. If the latest version fails, report the problem to the
333 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
334 EOF
335 if disabled logging; then
336 cat <<EOF
337 Rerun configure with logging enabled (do not use --disable-logging), and
338 include the log this produces with your report.
339 EOF
340 else
341 cat <<EOF
342 Include the log file "$logfile" produced by configure as this will help
343 solving the problem.
344 EOF
345 fi
346 exit 1
347 }
348
349 # Avoid locale weirdness, besides we really just want to translate ASCII.
350 toupper(){
351 echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
352 }
353
354 tolower(){
355 echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
356 }
357
358 c_escape(){
359 echo "$*" | sed 's/["\\]/\\\0/g'
360 }
361
362 sh_quote(){
363 v=$(echo "$1" | sed "s/'/'\\\\''/g")
364 test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
365 echo "$v"
366 }
367
368 cleanws(){
369 echo "$@" | sed 's/^ *//;s/ */ /g;s/ *$//'
370 }
371
372 filter(){
373 pat=$1
374 shift
375 for v; do
376 eval "case $v in $pat) echo $v ;; esac"
377 done
378 }
379
380 filter_out(){
381 pat=$1
382 shift
383 for v; do
384 eval "case $v in $pat) ;; *) echo $v ;; esac"
385 done
386 }
387
388 map(){
389 m=$1
390 shift
391 for v; do eval $m; done
392 }
393
394 add_suffix(){
395 suffix=$1
396 shift
397 for v; do echo ${v}${suffix}; done
398 }
399
400 set_all(){
401 value=$1
402 shift
403 for var in $*; do
404 eval $var=$value
405 done
406 }
407
408 set_weak(){
409 value=$1
410 shift
411 for var; do
412 eval : \${$var:=$value}
413 done
414 }
415
416 sanitize_var_name(){
417 echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
418 }
419
420 set_safe(){
421 var=$1
422 shift
423 eval $(sanitize_var_name "$var")='$*'
424 }
425
426 get_safe(){
427 eval echo \$$(sanitize_var_name "$1")
428 }
429
430 pushvar(){
431 for pvar in $*; do
432 eval level=\${${pvar}_level:=0}
433 eval ${pvar}_${level}="\$$pvar"
434 eval ${pvar}_level=$(($level+1))
435 done
436 }
437
438 popvar(){
439 for pvar in $*; do
440 eval level=\${${pvar}_level:-0}
441 test $level = 0 && continue
442 eval level=$(($level-1))
443 eval $pvar="\${${pvar}_${level}}"
444 eval ${pvar}_level=$level
445 eval unset ${pvar}_${level}
446 done
447 }
448
449 enable(){
450 set_all yes $*
451 }
452
453 disable(){
454 set_all no $*
455 }
456
457 enable_weak(){
458 set_weak yes $*
459 }
460
461 disable_weak(){
462 set_weak no $*
463 }
464
465 enable_safe(){
466 for var; do
467 enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
468 done
469 }
470
471 disable_safe(){
472 for var; do
473 disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
474 done
475 }
476
477 do_enable_deep(){
478 for var; do
479 enabled $var && continue
480 eval sel="\$${var}_select"
481 eval sgs="\$${var}_suggest"
482 pushvar var sgs
483 enable_deep $sel
484 popvar sgs
485 enable_deep_weak $sgs
486 popvar var
487 done
488 }
489
490 enable_deep(){
491 do_enable_deep $*
492 enable $*
493 }
494
495 enable_deep_weak(){
496 for var; do
497 disabled $var && continue
498 pushvar var
499 do_enable_deep $var
500 popvar var
501 enable_weak $var
502 done
503 }
504
505 enabled(){
506 test "${1#!}" = "$1" && op== || op=!=
507 eval test "x\$${1#!}" $op "xyes"
508 }
509
510 disabled(){
511 test "${1#!}" = "$1" && op== || op=!=
512 eval test "x\$${1#!}" $op "xno"
513 }
514
515 enabled_all(){
516 for opt; do
517 enabled $opt || return 1
518 done
519 }
520
521 disabled_all(){
522 for opt; do
523 disabled $opt || return 1
524 done
525 }
526
527 enabled_any(){
528 for opt; do
529 enabled $opt && return 0
530 done
531 }
532
533 disabled_any(){
534 for opt; do
535 disabled $opt && return 0
536 done
537 return 1
538 }
539
540 set_default(){
541 for opt; do
542 eval : \${$opt:=\$${opt}_default}
543 done
544 }
545
546 is_in(){
547 value=$1
548 shift
549 for var in $*; do
550 [ $var = $value ] && return 0
551 done
552 return 1
553 }
554
555 do_check_deps(){
556 for cfg; do
557 cfg="${cfg#!}"
558 enabled ${cfg}_checking && die "Circular dependency for $cfg."
559 disabled ${cfg}_checking && continue
560 enable ${cfg}_checking
561 append allopts $cfg
562
563 eval dep_all="\$${cfg}_deps"
564 eval dep_any="\$${cfg}_deps_any"
565 eval dep_sel="\$${cfg}_select"
566 eval dep_sgs="\$${cfg}_suggest"
567 eval dep_ifa="\$${cfg}_if"
568 eval dep_ifn="\$${cfg}_if_any"
569
570 pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
571 do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
572 popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
573
574 [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
575 [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
576 enabled_all $dep_all || disable $cfg
577 enabled_any $dep_any || disable $cfg
578 disabled_any $dep_sel && disable $cfg
579
580 if enabled $cfg; then
581 enable_deep $dep_sel
582 enable_deep_weak $dep_sgs
583 fi
584
585 disable ${cfg}_checking
586 done
587 }
588
589 check_deps(){
590 unset allopts
591
592 do_check_deps "$@"
593
594 for cfg in $allopts; do
595 enabled $cfg || continue
596 eval dep_extralibs="\$${cfg}_extralibs"
597 test -n "$dep_extralibs" && add_extralibs $dep_extralibs
598 done
599 }
600
601 print_config(){
602 pfx=$1
603 files=$2
604 shift 2
605 map 'eval echo "$v \${$v:-no}"' "$@" |
606 awk "BEGIN { split(\"$files\", files) }
607 {
608 c = \"$pfx\" toupper(\$1);
609 v = \$2;
610 sub(/yes/, 1, v);
611 sub(/no/, 0, v);
612 for (f in files) {
613 file = files[f];
614 if (file ~ /\\.h\$/) {
615 printf(\"#define %s %d\\n\", c, v) >>file;
616 } else if (file ~ /\\.asm\$/) {
617 printf(\"%%define %s %d\\n\", c, v) >>file;
618 } else if (file ~ /\\.mak\$/) {
619 n = -v ? \"\" : \"!\";
620 printf(\"%s%s=yes\\n\", n, c) >>file;
621 }
622 }
623 }"
624 }
625
626 print_enabled(){
627 suf=$1
628 shift
629 for v; do
630 enabled $v && printf "%s\n" ${v%$suf};
631 done
632 }
633
634 append(){
635 var=$1
636 shift
637 eval "$var=\"\$$var $*\""
638 }
639
640 prepend(){
641 var=$1
642 shift
643 eval "$var=\"$* \$$var\""
644 }
645
646 add_cppflags(){
647 append CPPFLAGS "$@"
648 }
649
650 add_cflags(){
651 append CFLAGS $($cflags_filter "$@")
652 }
653
654 add_asflags(){
655 append ASFLAGS $($asflags_filter "$@")
656 }
657
658 add_ldflags(){
659 append LDFLAGS $($ldflags_filter "$@")
660 }
661
662 add_extralibs(){
663 prepend extralibs $($ldflags_filter "$@")
664 }
665
666 add_host_cppflags(){
667 append host_cppflags "$@"
668 }
669
670 add_host_cflags(){
671 append host_cflags $($host_cflags_filter "$@")
672 }
673
674 add_host_ldflags(){
675 append host_ldflags $($host_ldflags_filter "$@")
676 }
677
678 add_compat(){
679 append compat_objs $1
680 shift
681 map 'add_cppflags -D$v' "$@"
682 }
683
684 check_cmd(){
685 log "$@"
686 "$@" >> $logfile 2>&1
687 }
688
689 cc_o(){
690 eval printf '%s\\n' $CC_O
691 }
692
693 cc_e(){
694 eval printf '%s\\n' $CC_E
695 }
696
697 check_cc(){
698 log check_cc "$@"
699 cat > $TMPC
700 log_file $TMPC
701 check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
702 }
703
704 check_cpp(){
705 log check_cpp "$@"
706 cat > $TMPC
707 log_file $TMPC
708 check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
709 }
710
711 as_o(){
712 eval printf '%s\\n' $AS_O
713 }
714
715 check_as(){
716 log check_as "$@"
717 cat > $TMPS
718 log_file $TMPS
719 check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
720 }
721
722 check_inline_asm(){
723 log check_inline_asm "$@"
724 name="$1"
725 code="$2"
726 shift 2
727 disable $name
728 check_cc "$@" <<EOF && enable $name
729 void foo(void){ __asm__ volatile($code); }
730 EOF
731 }
732
733 check_insn(){
734 log check_insn "$@"
735 check_inline_asm ${1}_inline "\"$2\""
736 echo "$2" | check_as && enable ${1}_external || disable ${1}_external
737 }
738
739 check_yasm(){
740 log check_yasm "$@"
741 echo "$1" > $TMPS
742 log_file $TMPS
743 shift 1
744 check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
745 }
746
747 ld_o(){
748 eval printf '%s\\n' $LD_O
749 }
750
751 check_ld(){
752 log check_ld "$@"
753 flags=$(filter_out '-l*' "$@")
754 libs=$(filter '-l*' "$@")
755 check_cc $($cflags_filter $flags) || return
756 flags=$($ldflags_filter $flags)
757 libs=$($ldflags_filter $libs)
758 check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
759 }
760
761 check_code(){
762 log check_code "$@"
763 check=$1
764 headers=$2
765 code=$3
766 shift 3
767 {
768 for hdr in $headers; do
769 echo "#include <$hdr>"
770 done
771 echo "int main(void) { $code; return 0; }"
772 } | check_$check "$@"
773 }
774
775 check_cppflags(){
776 log check_cppflags "$@"
777 check_cc "$@" <<EOF && append CPPFLAGS "$@"
778 int x;
779 EOF
780 }
781
782 test_cflags(){
783 log test_cflags "$@"
784 set -- $($cflags_filter "$@")
785 check_cc "$@" <<EOF
786 int x;
787 EOF
788 }
789
790 check_cflags(){
791 log check_cflags "$@"
792 test_cflags "$@" && add_cflags "$@"
793 }
794
795 test_ldflags(){
796 log test_ldflags "$@"
797 check_ld "$@" <<EOF
798 int main(void){ return 0; }
799 EOF
800 }
801
802 check_ldflags(){
803 log check_ldflags "$@"
804 test_ldflags "$@" && add_ldflags "$@"
805 }
806
807 check_header(){
808 log check_header "$@"
809 header=$1
810 shift
811 disable_safe $header
812 check_cpp "$@" <<EOF && enable_safe $header
813 #include <$header>
814 int x;
815 EOF
816 }
817
818 check_func(){
819 log check_func "$@"
820 func=$1
821 shift
822 disable $func
823 check_ld "$@" <<EOF && enable $func
824 extern int $func();
825 int main(void){ $func(); }
826 EOF
827 }
828
829 check_mathfunc(){
830 log check_mathfunc "$@"
831 func=$1
832 narg=$2
833 shift 2
834 test $narg = 2 && args="f, g" || args="f"
835 disable $func
836 check_ld "$@" <<EOF && enable $func
837 #include <math.h>
838 float foo(float f, float g) { return $func($args); }
839 int main(void){ return 0; }
840 EOF
841 }
842
843 check_func_headers(){
844 log check_func_headers "$@"
845 headers=$1
846 funcs=$2
847 shift 2
848 {
849 for hdr in $headers; do
850 echo "#include <$hdr>"
851 done
852 for func in $funcs; do
853 echo "long check_$func(void) { return (long) $func; }"
854 done
855 echo "int main(void) { return 0; }"
856 } | check_ld "$@" && enable $funcs && enable_safe $headers
857 }
858
859 check_cpp_condition(){
860 log check_cpp_condition "$@"
861 header=$1
862 condition=$2
863 shift 2
864 check_cpp "$@" <<EOF
865 #include <$header>
866 #if !($condition)
867 #error "unsatisfied condition: $condition"
868 #endif
869 EOF
870 }
871
872 check_lib(){
873 log check_lib "$@"
874 header="$1"
875 func="$2"
876 shift 2
877 check_header $header && check_func $func "$@" && add_extralibs "$@"
878 }
879
880 check_lib2(){
881 log check_lib2 "$@"
882 headers="$1"
883 funcs="$2"
884 shift 2
885 check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
886 }
887
888 check_pkg_config(){
889 log check_pkg_config "$@"
890 pkg="$1"
891 headers="$2"
892 funcs="$3"
893 shift 3
894 check_cmd $pkg_config --exists --print-errors $pkg || return
895 pkg_cflags=$($pkg_config --cflags $pkg)
896 pkg_libs=$($pkg_config --libs $pkg)
897 check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
898 set_safe ${pkg}_cflags $pkg_cflags &&
899 set_safe ${pkg}_libs $pkg_libs
900 }
901
902 check_exec(){
903 check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
904 }
905
906 check_exec_crash(){
907 code=$(cat)
908
909 # exit() is not async signal safe. _Exit (C99) and _exit (POSIX)
910 # are safe but may not be available everywhere. Thus we use
911 # raise(SIGTERM) instead. The check is run in a subshell so we
912 # can redirect the "Terminated" message from the shell. SIGBUS
913 # is not defined by standard C so it is used conditionally.
914
915 (check_exec "$@") >> $logfile 2>&1 <<EOF
916 #include <signal.h>
917 static void sighandler(int sig){
918 raise(SIGTERM);
919 }
920 int foo(void){
921 $code
922 }
923 int (*func_ptr)(void) = foo;
924 int main(void){
925 signal(SIGILL, sighandler);
926 signal(SIGFPE, sighandler);
927 signal(SIGSEGV, sighandler);
928 #ifdef SIGBUS
929 signal(SIGBUS, sighandler);
930 #endif
931 return func_ptr();
932 }
933 EOF
934 }
935
936 check_type(){
937 log check_type "$@"
938 headers=$1
939 type=$2
940 shift 2
941 disable_safe "$type"
942 check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
943 }
944
945 check_struct(){
946 log check_struct "$@"
947 headers=$1
948 struct=$2
949 member=$3
950 shift 3
951 disable_safe "${struct}_${member}"
952 check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
953 enable_safe "${struct}_${member}"
954 }
955
956 check_builtin(){
957 log check_builtin "$@"
958 name=$1
959 headers=$2
960 builtin=$3
961 shift 3
962 disable "$name"
963 check_code ld "$headers" "$builtin" "$@" && enable "$name"
964 }
965
966 require(){
967 name="$1"
968 header="$2"
969 func="$3"
970 shift 3
971 check_lib $header $func "$@" || die "ERROR: $name not found"
972 }
973
974 require2(){
975 name="$1"
976 headers="$2"
977 func="$3"
978 shift 3
979 check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
980 }
981
982 require_pkg_config(){
983 pkg="$1"
984 check_pkg_config "$@" || die "ERROR: $pkg not found"
985 add_cflags $(get_safe ${pkg}_cflags)
986 add_extralibs $(get_safe ${pkg}_libs)
987 }
988
989 hostcc_o(){
990 eval printf '%s\\n' $HOSTCC_O
991 }
992
993 check_host_cc(){
994 log check_host_cc "$@"
995 cat > $TMPC
996 log_file $TMPC
997 check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
998 }
999
1000 check_host_cppflags(){
1001 log check_host_cppflags "$@"
1002 check_host_cc "$@" <<EOF && append host_cppflags "$@"
1003 int x;
1004 EOF
1005 }
1006
1007 check_host_cflags(){
1008 log check_host_cflags "$@"
1009 set -- $($host_cflags_filter "$@")
1010 check_host_cc "$@" <<EOF && append host_cflags "$@"
1011 int x;
1012 EOF
1013 }
1014
1015 apply(){
1016 file=$1
1017 shift
1018 "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1019 }
1020
1021 cp_if_changed(){
1022 cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1023 mkdir -p "$(dirname $2)"
1024 $cp_f "$1" "$2"
1025 }
1026
1027 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1028 # system-dependent things.
1029
1030 COMPONENT_LIST="
1031 bsfs
1032 decoders
1033 demuxers
1034 encoders
1035 filters
1036 hwaccels
1037 indevs
1038 muxers
1039 outdevs
1040 parsers
1041 protocols
1042 "
1043
1044 EXTERNAL_LIBRARY_LIST="
1045 avisynth
1046 bzlib
1047 frei0r
1048 gnutls
1049 libcdio
1050 libdc1394
1051 libfaac
1052 libfdk_aac
1053 libfreetype
1054 libgsm
1055 libilbc
1056 libmp3lame
1057 libopencore_amrnb
1058 libopencore_amrwb
1059 libopencv
1060 libopenjpeg
1061 libopus
1062 libpulse
1063 librtmp
1064 libschroedinger
1065 libspeex
1066 libtheora
1067 libvo_aacenc
1068 libvo_amrwbenc
1069 libvorbis
1070 libvpx
1071 libwavpack
1072 libx264
1073 libxavs
1074 libxvid
1075 openssl
1076 x11grab
1077 zlib
1078 "
1079
1080 HWACCEL_LIST="
1081 dxva2
1082 vaapi
1083 vda
1084 vdpau
1085 "
1086 LIBRARY_LIST="
1087 avcodec
1088 avdevice
1089 avfilter
1090 avformat
1091 avresample
1092 avutil
1093 swscale
1094 "
1095
1096 PROGRAM_LIST="
1097 avconv
1098 avplay
1099 avprobe
1100 avserver
1101 "
1102
1103 CONFIG_LIST="
1104 $COMPONENT_LIST
1105 $EXTERNAL_LIBRARY_LIST
1106 $HWACCEL_LIST
1107 $LIBRARY_LIST
1108 $PROGRAM_LIST
1109 dct
1110 error_resilience
1111 fft
1112 gpl
1113 gray
1114 hardcoded_tables
1115 lsp
1116 lzo
1117 mdct
1118 memalign_hack
1119 network
1120 nonfree
1121 perl
1122 pic
1123 rdft
1124 runtime_cpudetect
1125 safe_bitstream_reader
1126 shared
1127 small
1128 sram
1129 static
1130 swscale_alpha
1131 texi2html
1132 thumb
1133 version3
1134 xmm_clobber_test
1135 "
1136
1137 THREADS_LIST='
1138 pthreads
1139 w32threads
1140 '
1141
1142 ATOMICS_LIST='
1143 atomics_gcc
1144 atomics_suncc
1145 atomics_win32
1146 '
1147
1148 ARCH_LIST='
1149 aarch64
1150 alpha
1151 arm
1152 avr32
1153 avr32_ap
1154 avr32_uc
1155 bfin
1156 ia64
1157 m68k
1158 mips
1159 mips64
1160 parisc
1161 ppc
1162 ppc64
1163 s390
1164 sh4
1165 sparc
1166 sparc64
1167 tilegx
1168 tilepro
1169 tomi
1170 x86
1171 x86_32
1172 x86_64
1173 '
1174
1175 ARCH_EXT_LIST_ARM='
1176 armv5te
1177 armv6
1178 armv6t2
1179 neon
1180 vfp
1181 vfpv3
1182 '
1183
1184 ARCH_EXT_LIST_X86='
1185 amd3dnow
1186 amd3dnowext
1187 avx
1188 avx2
1189 fma4
1190 i686
1191 mmx
1192 mmxext
1193 sse
1194 sse2
1195 sse3
1196 sse4
1197 sse42
1198 ssse3
1199 '
1200
1201 ARCH_EXT_LIST="
1202 $ARCH_EXT_LIST_ARM
1203 $ARCH_EXT_LIST_X86
1204 altivec
1205 ppc4xx
1206 vis
1207 "
1208
1209 HAVE_LIST_CMDLINE='
1210 inline_asm
1211 symver
1212 yasm
1213 '
1214
1215 HAVE_LIST_PUB='
1216 bigendian
1217 fast_unaligned
1218 '
1219
1220 MATH_FUNCS="
1221 atanf
1222 atan2f
1223 cbrtf
1224 cosf
1225 exp2
1226 exp2f
1227 expf
1228 isinf
1229 isnan
1230 ldexpf
1231 llrint
1232 llrintf
1233 log2
1234 log2f
1235 log10f
1236 lrint
1237 lrintf
1238 powf
1239 rint
1240 round
1241 roundf
1242 sinf
1243 trunc
1244 truncf
1245 "
1246
1247 HAVE_LIST="
1248 $ARCH_EXT_LIST
1249 $(add_suffix _external $ARCH_EXT_LIST)
1250 $(add_suffix _inline $ARCH_EXT_LIST)
1251 $HAVE_LIST_CMDLINE
1252 $HAVE_LIST_PUB
1253 $THREADS_LIST
1254 $ATOMICS_LIST
1255 $MATH_FUNCS
1256 aligned_malloc
1257 aligned_stack
1258 alsa_asoundlib_h
1259 altivec_h
1260 arpa_inet_h
1261 asm_mod_q
1262 asm_mod_y
1263 atomic_cas_ptr
1264 atomics_native
1265 attribute_may_alias
1266 attribute_packed
1267 cdio_paranoia_h
1268 cdio_paranoia_paranoia_h
1269 closesocket
1270 CommandLineToArgvW
1271 cpunop
1272 CryptGenRandom
1273 dcbzl
1274 dev_bktr_ioctl_bt848_h
1275 dev_bktr_ioctl_meteor_h
1276 dev_ic_bt8xx_h
1277 dev_video_bktr_ioctl_bt848_h
1278 dev_video_meteor_ioctl_meteor_h
1279 direct_h
1280 dlfcn_h
1281 dlopen
1282 dos_paths
1283 dxva_h
1284 ebp_available
1285 ebx_available
1286 fast_64bit
1287 fast_clz
1288 fast_cmov
1289 fcntl
1290 fork
1291 getaddrinfo
1292 gethrtime
1293 getopt
1294 GetProcessAffinityMask
1295 GetProcessMemoryInfo
1296 GetProcessTimes
1297 GetSystemTimeAsFileTime
1298 getrusage
1299 getservbyport
1300 gettimeofday
1301 gnu_as
1302 gsm_h
1303 ibm_asm
1304 inet_aton
1305 io_h
1306 inline_asm_labels
1307 isatty
1308 jack_port_get_latency_range
1309 ldbrx
1310 libdc1394_1
1311 libdc1394_2
1312 local_aligned_16
1313 local_aligned_8
1314 localtime_r
1315 loongson
1316 machine_ioctl_bt848_h
1317 machine_ioctl_meteor_h
1318 machine_rw_barrier
1319 malloc_h
1320 MapViewOfFile
1321 memalign
1322 MemoryBarrier
1323 mkstemp
1324 mm_empty
1325 mmap
1326 mprotect
1327 msvcrt
1328 nanosleep
1329 poll_h
1330 posix_memalign
1331 pragma_deprecated
1332 rdtsc
1333 sched_getaffinity
1334 sdl
1335 SetConsoleTextAttribute
1336 setmode
1337 setrlimit
1338 Sleep
1339 sndio_h
1340 socklen_t
1341 soundcard_h
1342 strerror_r
1343 strptime
1344 strtok_r
1345 struct_addrinfo
1346 struct_group_source_req
1347 struct_ip_mreq_source
1348 struct_ipv6_mreq
1349 struct_pollfd
1350 struct_rusage_ru_maxrss
1351 struct_sockaddr_in6
1352 struct_sockaddr_sa_len
1353 struct_sockaddr_storage
1354 struct_v4l2_frmivalenum_discrete
1355 symver_asm_label
1356 symver_gnu_asm
1357 sync_val_compare_and_swap
1358 sysconf
1359 sysctl
1360 sys_mman_h
1361 sys_param_h
1362 sys_resource_h
1363 sys_select_h
1364 sys_soundcard_h
1365 sys_time_h
1366 sys_un_h
1367 sys_videoio_h
1368 threads
1369 unistd_h
1370 usleep
1371 vdpau_x11
1372 vfp_args
1373 VirtualAlloc
1374 windows_h
1375 winsock2_h
1376 xform_asm
1377 xlib
1378 xmm_clobbers
1379 "
1380
1381 # options emitted with CONFIG_ prefix but not available on the command line
1382 CONFIG_EXTRA="
1383 aandcttables
1384 ac3dsp
1385 audio_frame_queue
1386 dsputil
1387 gcrypt
1388 golomb
1389 gplv3
1390 h263dsp
1391 h264chroma
1392 h264dsp
1393 h264pred
1394 h264qpel
1395 hpeldsp
1396 huffman
1397 lgplv3
1398 lpc
1399 mpegaudio
1400 mpegaudiodsp
1401 mpegvideo
1402 mpegvideoenc
1403 nettle
1404 rangecoder
1405 riffdec
1406 riffenc
1407 rtpdec
1408 rtpenc_chain
1409 sinewin
1410 videodsp
1411 vp3dsp
1412 "
1413
1414 CMDLINE_SELECT="
1415 $ARCH_EXT_LIST
1416 $CONFIG_LIST
1417 $HAVE_LIST_CMDLINE
1418 $THREADS_LIST
1419 asm
1420 cross_compile
1421 debug
1422 extra_warnings
1423 logging
1424 lto
1425 optimizations
1426 "
1427
1428 PATHS_LIST='
1429 bindir
1430 datadir
1431 docdir
1432 incdir
1433 libdir
1434 mandir
1435 prefix
1436 shlibdir
1437 '
1438
1439 CMDLINE_SET="
1440 $PATHS_LIST
1441 ar
1442 arch
1443 as
1444 build_suffix
1445 cc
1446 cpu
1447 cross_prefix
1448 dep_cc
1449 extra_version
1450 host_cc
1451 host_cflags
1452 host_ld
1453 host_ldflags
1454 host_libs
1455 host_os
1456 ld
1457 logfile
1458 malloc_prefix
1459 nm
1460 optflags
1461 pkg_config
1462 random_seed
1463 samples
1464 sysinclude
1465 sysroot
1466 target_exec
1467 target_os
1468 target_path
1469 target_samples
1470 toolchain
1471 "
1472
1473 CMDLINE_APPEND="
1474 extra_cflags
1475 host_cppflags
1476 "
1477
1478 # code dependency declarations
1479
1480 # architecture extensions
1481
1482 armv5te_deps="arm"
1483 armv6_deps="arm"
1484 armv6t2_deps="arm"
1485 neon_deps="arm"
1486 vfp_deps="arm"
1487 vfpv3_deps="vfp"
1488
1489 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1490
1491 altivec_deps="ppc"
1492 ppc4xx_deps="ppc"
1493
1494 vis_deps="sparc"
1495
1496 cpunop_deps="i686"
1497 x86_64_select="i686"
1498 x86_64_suggest="fast_cmov"
1499
1500 amd3dnow_deps="mmx"
1501 amd3dnowext_deps="amd3dnow"
1502 mmx_deps="x86"
1503 mmxext_deps="mmx"
1504 sse_deps="mmxext"
1505 sse2_deps="sse"
1506 sse3_deps="sse2"
1507 ssse3_deps="sse3"
1508 sse4_deps="ssse3"
1509 sse42_deps="sse4"
1510 avx_deps="sse42"
1511 fma4_deps="avx"
1512 avx2_deps="avx"
1513
1514 mmx_external_deps="yasm"
1515 mmx_inline_deps="inline_asm"
1516 mmx_suggest="mmx_external mmx_inline"
1517
1518 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1519 eval dep=\$${ext}_deps
1520 eval ${ext}_external_deps='"${dep}_external"'
1521 eval ${ext}_inline_deps='"${dep}_inline"'
1522 eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1523 done
1524
1525 aligned_stack_if_any="ppc x86"
1526 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1527 fast_clz_if_any="alpha avr32 mips ppc x86"
1528 fast_unaligned_if_any="ppc x86"
1529
1530 inline_asm_deps="!tms470"
1531 need_memalign="altivec neon sse"
1532
1533 symver_if_any="symver_asm_label symver_gnu_asm"
1534
1535 log2_deps="!msvcrt"
1536
1537 # subsystems
1538 dct_select="rdft"
1539 error_resilience_select="dsputil"
1540 lpc_select="dsputil"
1541 mdct_select="fft"
1542 rdft_select="fft"
1543 mpegaudio_select="mpegaudiodsp"
1544 mpegaudiodsp_select="dct"
1545 mpegvideo_select="dsputil hpeldsp videodsp"
1546 mpegvideoenc_select="mpegvideo"
1547
1548 # decoders / encoders
1549 aac_decoder_select="mdct sinewin"
1550 aac_encoder_select="audio_frame_queue mdct sinewin"
1551 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1552 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1553 ac3_encoder_select="mdct ac3dsp dsputil"
1554 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1555 aic_decoder_select="dsputil golomb"
1556 alac_encoder_select="lpc"
1557 als_decoder_select="dsputil"
1558 amrnb_decoder_select="lsp"
1559 amrwb_decoder_select="lsp"
1560 amv_decoder_select="dsputil hpeldsp"
1561 ape_decoder_select="dsputil"
1562 asv1_decoder_select="dsputil"
1563 asv1_encoder_select="dsputil"
1564 asv2_decoder_select="dsputil"
1565 asv2_encoder_select="dsputil"
1566 atrac1_decoder_select="mdct sinewin"
1567 atrac3_decoder_select="mdct"
1568 bink_decoder_select="dsputil hpeldsp"
1569 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1570 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1571 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1572 cllc_decoder_select="dsputil"
1573 comfortnoise_encoder_select="lpc"
1574 cook_decoder_select="dsputil mdct sinewin"
1575 cscd_decoder_select="lzo"
1576 cscd_decoder_suggest="zlib"
1577 dca_decoder_select="mdct"
1578 dnxhd_decoder_select="dsputil"
1579 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1580 dvvideo_decoder_select="dsputil"
1581 dvvideo_encoder_select="dsputil"
1582 dxa_decoder_deps="zlib"
1583 eac3_decoder_select="ac3_decoder"
1584 eac3_encoder_select="ac3_encoder"
1585 eamad_decoder_select="aandcttables dsputil mpegvideo"
1586 eatgq_decoder_select="aandcttables dsputil"
1587 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1588 ffv1_decoder_select="dsputil golomb rangecoder"
1589 ffv1_encoder_select="dsputil rangecoder"
1590 ffvhuff_decoder_select="dsputil"
1591 ffvhuff_encoder_select="dsputil huffman"
1592 flac_decoder_select="golomb"
1593 flac_encoder_select="dsputil golomb lpc"
1594 flashsv_decoder_deps="zlib"
1595 flashsv_encoder_deps="zlib"
1596 flashsv2_decoder_deps="zlib"
1597 flv_decoder_select="h263_decoder"
1598 flv_encoder_select="h263_encoder"
1599 fourxm_decoder_select="dsputil"
1600 fraps_decoder_select="dsputil huffman"
1601 g2m_decoder_deps="zlib"
1602 g2m_decoder_select="dsputil"
1603 h261_decoder_select="error_resilience mpegvideo"
1604 h261_encoder_select="aandcttables mpegvideoenc"
1605 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1606 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1607 h263i_decoder_select="h263_decoder"
1608 h263p_encoder_select="h263_encoder"
1609 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1610 h264_decoder_suggest="error_resilience"
1611 hevc_decoder_select="dsputil golomb videodsp"
1612 huffyuv_decoder_select="dsputil"
1613 huffyuv_encoder_select="dsputil huffman"
1614 iac_decoder_select="dsputil fft mdct sinewin"
1615 imc_decoder_select="dsputil fft mdct sinewin"
1616 indeo3_decoder_select="hpeldsp"
1617 interplay_video_decoder_select="hpeldsp"
1618 jpegls_decoder_select="dsputil golomb hpeldsp"
1619 jpegls_encoder_select="golomb"
1620 jv_decoder_select="dsputil"
1621 lagarith_decoder_select="dsputil"
1622 ljpeg_encoder_select="aandcttables mpegvideoenc"
1623 loco_decoder_select="golomb"
1624 mdec_decoder_select="dsputil error_resilience mpegvideo"
1625 metasound_decoder_select="lsp mdct sinewin"
1626 mimic_decoder_select="dsputil hpeldsp"
1627 mjpeg_decoder_select="dsputil hpeldsp"
1628 mjpegb_decoder_select="dsputil hpeldsp"
1629 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1630 mlp_decoder_select="dsputil mlp_parser"
1631 motionpixels_decoder_select="dsputil"
1632 mp1_decoder_select="mpegaudio"
1633 mp1float_decoder_select="mpegaudio"
1634 mp2_decoder_select="mpegaudio"
1635 mp2float_decoder_select="mpegaudio"
1636 mp3_decoder_select="mpegaudio"
1637 mp3adu_decoder_select="mpegaudio"
1638 mp3adufloat_decoder_select="mpegaudio"
1639 mp3float_decoder_select="mpegaudio"
1640 mp3on4_decoder_select="mpegaudio"
1641 mp3on4float_decoder_select="mpegaudio"
1642 mpc7_decoder_select="dsputil mpegaudiodsp"
1643 mpc8_decoder_select="dsputil mpegaudiodsp"
1644 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1645 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1646 mpeg1video_decoder_select="error_resilience mpegvideo"
1647 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1648 mpeg2video_decoder_select="error_resilience mpegvideo"
1649 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1650 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1651 mpeg4_encoder_select="h263_encoder"
1652 msmpeg4v1_decoder_select="h263_decoder"
1653 msmpeg4v2_decoder_select="h263_decoder"
1654 msmpeg4v2_encoder_select="h263_encoder"
1655 msmpeg4v3_decoder_select="h263_decoder"
1656 msmpeg4v3_encoder_select="h263_encoder"
1657 mss2_decoder_select="error_resilience vc1_decoder"
1658 mxpeg_decoder_select="dsputil hpeldsp"
1659 nellymoser_decoder_select="mdct sinewin"
1660 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1661 nuv_decoder_select="dsputil lzo"
1662 png_decoder_deps="zlib"
1663 png_decoder_select="dsputil"
1664 png_encoder_deps="zlib"
1665 png_encoder_select="dsputil"
1666 prores_decoder_select="dsputil"
1667 prores_encoder_select="dsputil"
1668 qcelp_decoder_select="lsp"
1669 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1670 ra_144_encoder_select="audio_frame_queue lpc"
1671 ralf_decoder_select="golomb"
1672 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1673 rv10_encoder_select="h263_encoder"
1674 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1675 rv20_encoder_select="h263_encoder"
1676 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1677 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1678 shorten_decoder_select="golomb"
1679 sipr_decoder_select="lsp"
1680 sp5x_decoder_select="dsputil hpeldsp"
1681 svq1_decoder_select="hpeldsp"
1682 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1683 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1684 svq3_decoder_suggest="error_resilience zlib"
1685 tak_decoder_select="dsputil"
1686 theora_decoder_select="vp3_decoder"
1687 tiff_decoder_suggest="zlib"
1688 tiff_encoder_suggest="zlib"
1689 thp_decoder_select="dsputil hpeldsp"
1690 truehd_decoder_select="mlp_decoder"
1691 truemotion2_decoder_select="dsputil"
1692 truespeech_decoder_select="dsputil"
1693 tscc_decoder_deps="zlib"
1694 twinvq_decoder_select="mdct lsp sinewin"
1695 utvideo_decoder_select="dsputil"
1696 utvideo_encoder_select="dsputil huffman"
1697 vble_decoder_select="dsputil"
1698 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1699 vc1image_decoder_select="vc1_decoder"
1700 vorbis_decoder_select="mdct"
1701 vorbis_encoder_select="mdct"
1702 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1703 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1704 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1705 vp6a_decoder_select="vp6_decoder"
1706 vp6f_decoder_select="vp6_decoder"
1707 vp8_decoder_select="h264pred videodsp"
1708 vp9_decoder_select="videodsp"
1709 webp_decoder_select="vp8_decoder"
1710 wmapro_decoder_select="mdct sinewin"
1711 wmav1_decoder_select="mdct sinewin"
1712 wmav1_encoder_select="mdct sinewin"
1713 wmav2_decoder_select="mdct sinewin"
1714 wmav2_encoder_select="mdct sinewin"
1715 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1716 wmv1_decoder_select="h263_decoder"
1717 wmv1_encoder_select="h263_encoder"
1718 wmv2_decoder_select="h263_decoder videodsp"
1719 wmv2_encoder_select="h263_encoder"
1720 wmv3_decoder_select="vc1_decoder"
1721 wmv3image_decoder_select="wmv3_decoder"
1722 zerocodec_decoder_deps="zlib"
1723 zlib_decoder_deps="zlib"
1724 zlib_encoder_deps="zlib"
1725 zmbv_decoder_deps="zlib"
1726 zmbv_encoder_deps="zlib"
1727
1728 # hardware accelerators
1729 dxva2_deps="dxva2api_h"
1730 vaapi_deps="va_va_h"
1731 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1732 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1733 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1734
1735 h263_vaapi_hwaccel_deps="vaapi"
1736 h263_vaapi_hwaccel_select="h263_decoder"
1737 h263_vdpau_hwaccel_deps="vdpau"
1738 h263_vdpau_hwaccel_select="h263_decoder"
1739 h264_dxva2_hwaccel_deps="dxva2"
1740 h264_dxva2_hwaccel_select="h264_decoder"
1741 h264_vaapi_hwaccel_deps="vaapi"
1742 h264_vaapi_hwaccel_select="h264_decoder"
1743 h264_vda_hwaccel_deps="vda"
1744 h264_vda_hwaccel_select="h264_decoder"
1745 h264_vdpau_hwaccel_deps="vdpau"
1746 h264_vdpau_hwaccel_select="h264_decoder"
1747 mpeg1_vdpau_hwaccel_deps="vdpau"
1748 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1749 mpeg2_dxva2_hwaccel_deps="dxva2"
1750 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1751 mpeg2_vaapi_hwaccel_deps="vaapi"
1752 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1753 mpeg2_vdpau_hwaccel_deps="vdpau"
1754 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1755 mpeg4_vaapi_hwaccel_deps="vaapi"
1756 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1757 mpeg4_vdpau_hwaccel_deps="vdpau"
1758 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1759 vc1_dxva2_hwaccel_deps="dxva2"
1760 vc1_dxva2_hwaccel_select="vc1_decoder"
1761 vc1_vaapi_hwaccel_deps="vaapi"
1762 vc1_vaapi_hwaccel_select="vc1_decoder"
1763 vc1_vdpau_hwaccel_deps="vdpau"
1764 vc1_vdpau_hwaccel_select="vc1_decoder"
1765 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1766 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1767 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1768
1769 # parsers
1770 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1771 mpeg4video_parser_select="error_resilience mpegvideo"
1772 mpegvideo_parser_select="error_resilience mpegvideo"
1773 vc1_parser_select="mpegvideo"
1774
1775 # external libraries
1776 libfaac_encoder_deps="libfaac"
1777 libfaac_encoder_select="audio_frame_queue"
1778 libfdk_aac_decoder_deps="libfdk_aac"
1779 libfdk_aac_encoder_deps="libfdk_aac"
1780 libfdk_aac_encoder_select="audio_frame_queue"
1781 libgsm_decoder_deps="libgsm"
1782 libgsm_encoder_deps="libgsm"
1783 libgsm_ms_decoder_deps="libgsm"
1784 libgsm_ms_encoder_deps="libgsm"
1785 libilbc_decoder_deps="libilbc"
1786 libilbc_encoder_deps="libilbc"
1787 libmp3lame_encoder_deps="libmp3lame"
1788 libmp3lame_encoder_select="audio_frame_queue"
1789 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1790 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1791 libopencore_amrnb_encoder_select="audio_frame_queue"
1792 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1793 libopenjpeg_decoder_deps="libopenjpeg"
1794 libopenjpeg_encoder_deps="libopenjpeg"
1795 libopus_decoder_deps="libopus"
1796 libopus_encoder_deps="libopus"
1797 libopus_encoder_select="audio_frame_queue"
1798 libschroedinger_decoder_deps="libschroedinger"
1799 libschroedinger_encoder_deps="libschroedinger"
1800 libspeex_decoder_deps="libspeex"
1801 libspeex_encoder_deps="libspeex"
1802 libspeex_encoder_select="audio_frame_queue"
1803 libtheora_encoder_deps="libtheora"
1804 libvo_aacenc_encoder_deps="libvo_aacenc"
1805 libvo_aacenc_encoder_select="audio_frame_queue"
1806 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1807 libvorbis_encoder_deps="libvorbis"
1808 libvorbis_encoder_select="audio_frame_queue"
1809 libvpx_vp8_decoder_deps="libvpx"
1810 libvpx_vp8_encoder_deps="libvpx"
1811 libvpx_vp9_decoder_deps="libvpx"
1812 libvpx_vp9_encoder_deps="libvpx"
1813 libwavpack_encoder_deps="libwavpack"
1814 libx264_encoder_deps="libx264"
1815 libxavs_encoder_deps="libxavs"
1816 libxvid_encoder_deps="libxvid"
1817
1818 # demuxers / muxers
1819 ac3_demuxer_select="ac3_parser"
1820 asf_demuxer_select="riffdec"
1821 asf_muxer_select="riffenc"
1822 asf_stream_muxer_select="asf_muxer"
1823 avi_demuxer_select="riffdec"
1824 avi_muxer_select="riffenc"
1825 avisynth_demuxer_deps="avisynth"
1826 avisynth_demuxer_select="riffdec"
1827 caf_demuxer_select="riffdec"
1828 dirac_demuxer_select="dirac_parser"
1829 dxa_demuxer_select="riffdec"
1830 eac3_demuxer_select="ac3_parser"
1831 f4v_muxer_select="mov_muxer"
1832 flac_demuxer_select="flac_parser"
1833 hds_muxer_select="flv_muxer"
1834 hls_muxer_select="mpegts_muxer"
1835 ipod_muxer_select="mov_muxer"
1836 ismv_muxer_select="mov_muxer"
1837 matroska_audio_muxer_select="matroska_muxer"
1838 matroska_demuxer_select="riffdec"
1839 matroska_demuxer_suggest="bzlib lzo zlib"
1840 matroska_muxer_select="riffenc"
1841 mmf_muxer_select="riffenc"
1842 mov_demuxer_select="riffdec"
1843 mov_demuxer_suggest="zlib"
1844 mov_muxer_select="riffenc rtpenc_chain"
1845 mp3_demuxer_select="mpegaudio_parser"
1846 mp4_muxer_select="mov_muxer"
1847 mpegts_muxer_select="adts_muxer latm_muxer"
1848 mpegtsraw_demuxer_select="mpegts_demuxer"
1849 mxf_d10_muxer_select="mxf_muxer"
1850 nut_muxer_select="riffenc"
1851 nuv_demuxer_select="riffdec"
1852 ogg_demuxer_select="golomb"
1853 psp_muxer_select="mov_muxer"
1854 rtp_demuxer_select="sdp_demuxer"
1855 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1856 rtsp_demuxer_select="http_protocol rtpdec"
1857 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1858 sap_demuxer_select="sdp_demuxer"
1859 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1860 sdp_demuxer_select="rtpdec"
1861 smoothstreaming_muxer_select="ismv_muxer"
1862 spdif_muxer_select="aac_parser"
1863 tak_demuxer_select="tak_parser"
1864 tg2_muxer_select="mov_muxer"
1865 tgp_muxer_select="mov_muxer"
1866 w64_demuxer_select="wav_demuxer"
1867 wav_demuxer_select="riffdec"
1868 wav_muxer_select="riffenc"
1869 webm_muxer_select="riffenc"
1870 wtv_demuxer_select="riffdec"
1871 xmv_demuxer_select="riffdec"
1872 xwma_demuxer_select="riffdec"
1873
1874 # indevs / outdevs
1875 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1876 alsa_outdev_deps="alsa_asoundlib_h"
1877 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1878 dv1394_indev_deps="dv1394"
1879 dv1394_indev_select="dv_demuxer"
1880 fbdev_indev_deps="linux_fb_h"
1881 jack_indev_deps="jack_jack_h pthreads"
1882 libcdio_indev_deps="libcdio"
1883 libdc1394_indev_deps="libdc1394"
1884 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1885 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1886 pulse_indev_deps="libpulse"
1887 sndio_indev_deps="sndio_h"
1888 sndio_outdev_deps="sndio_h"
1889 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1890 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1891 vfwcap_indev_extralibs="-lavicap32"
1892 x11grab_indev_deps="x11grab XShmCreateImage"
1893
1894 # protocols
1895 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1896 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1897 ffrtmpcrypt_protocol_select="tcp_protocol"
1898 ffrtmphttp_protocol_deps="!librtmp_protocol"
1899 ffrtmphttp_protocol_select="http_protocol"
1900 gopher_protocol_select="network"
1901 httpproxy_protocol_select="tcp_protocol"
1902 http_protocol_select="tcp_protocol"
1903 https_protocol_select="tls_protocol"
1904 librtmp_protocol_deps="librtmp"
1905 librtmpe_protocol_deps="librtmp"
1906 librtmps_protocol_deps="librtmp"
1907 librtmpt_protocol_deps="librtmp"
1908 librtmpte_protocol_deps="librtmp"
1909 mmsh_protocol_select="http_protocol"
1910 mmst_protocol_select="network"
1911 rtmp_protocol_deps="!librtmp_protocol"
1912 rtmp_protocol_select="tcp_protocol"
1913 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1914 rtmps_protocol_deps="!librtmp_protocol"
1915 rtmps_protocol_select="tls_protocol"
1916 rtmpt_protocol_select="ffrtmphttp_protocol"
1917 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1918 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1919 rtp_protocol_select="udp_protocol"
1920 sctp_protocol_deps="struct_sctp_event_subscribe"
1921 sctp_protocol_select="network"
1922 srtp_protocol_select="rtp_protocol"
1923 tcp_protocol_select="network"
1924 tls_protocol_deps_any="openssl gnutls"
1925 tls_protocol_select="tcp_protocol"
1926 udp_protocol_select="network"
1927 unix_protocol_deps="sys_un_h"
1928 unix_protocol_select="network"
1929
1930 # filters
1931 blackframe_filter_deps="gpl"
1932 boxblur_filter_deps="gpl"
1933 cropdetect_filter_deps="gpl"
1934 delogo_filter_deps="gpl"
1935 drawtext_filter_deps="libfreetype"
1936 frei0r_filter_deps="frei0r dlopen strtok_r"
1937 frei0r_filter_extralibs='$ldl'
1938 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1939 frei0r_src_filter_extralibs='$ldl'
1940 hqdn3d_filter_deps="gpl"
1941 interlace_filter_deps="gpl"
1942 resample_filter_deps="avresample"
1943 ocv_filter_deps="libopencv"
1944 scale_filter_deps="swscale"
1945 yadif_filter_deps="gpl"
1946
1947 # libraries
1948 avcodec_deps="avutil"
1949 avdevice_deps="avutil avcodec avformat"
1950 avfilter_deps="avutil"
1951 avformat_deps="avutil avcodec"
1952 avresample_deps="avutil"
1953 swscale_deps="avutil"
1954
1955 # programs
1956 avconv_deps="avcodec avfilter avformat avresample swscale"
1957 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
1958 fps_filter null_filter resample_filter scale_filter
1959 setpts_filter trim_filter"
1960 avplay_deps="avcodec avformat avresample swscale sdl"
1961 avplay_select="rdft"
1962 avprobe_deps="avcodec avformat"
1963 avserver_deps="avformat fork !shared"
1964 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
1965 avserver_extralibs='$ldl'
1966
1967 # default parameters
1968
1969 logfile="config.log"
1970
1971 # installation paths
1972 prefix_default="/usr/local"
1973 bindir_default='${prefix}/bin'
1974 datadir_default='${prefix}/share/avconv'
1975 docdir_default='${prefix}/share/doc/libav'
1976 incdir_default='${prefix}/include'
1977 libdir_default='${prefix}/lib'
1978 mandir_default='${prefix}/share/man'
1979 shlibdir_default="$libdir_default"
1980
1981 # toolchain
1982 ar_default="ar"
1983 cc_default="gcc"
1984 host_cc_default="gcc"
1985 cp_f="cp -f"
1986 ln_s="ln -s -f"
1987 nm_default="nm -g"
1988 objformat="elf"
1989 pkg_config_default=pkg-config
1990 ranlib="ranlib"
1991 strip="strip"
1992 yasmexe="yasm"
1993
1994 nogas=":"
1995
1996 # machine
1997 arch_default=$(uname -m)
1998 cpu="generic"
1999
2000 # OS
2001 target_os_default=$(tolower $(uname -s))
2002 host_os=$target_os_default
2003
2004 # configurable options
2005 enable $LIBRARY_LIST $PROGRAM_LIST
2006
2007 enable asm
2008 enable debug
2009 enable doc
2010 enable optimizations
2011 enable safe_bitstream_reader
2012 enable static
2013 enable swscale_alpha
2014
2015 # By default, enable only those hwaccels that have no external dependencies.
2016 enable dxva2 vdpau
2017
2018 # build settings
2019 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2020 LIBPREF="lib"
2021 LIBSUF=".a"
2022 FULLNAME='$(NAME)$(BUILDSUF)'
2023 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2024 SLIBPREF="lib"
2025 SLIBSUF=".so"
2026 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2027 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2028 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2029 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2030 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2031 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2032
2033 asflags_filter=echo
2034 cflags_filter=echo
2035 ldflags_filter=echo
2036
2037 AS_C='-c'
2038 AS_O='-o $@'
2039 CC_C='-c'
2040 CC_E='-E -o $@'
2041 CC_O='-o $@'
2042 LD_O='-o $@'
2043 LD_LIB='-l%'
2044 LD_PATH='-L'
2045 HOSTCC_C='-c'
2046 HOSTCC_O='-o $@'
2047 HOSTLD_O='-o $@'
2048
2049 host_cflags='-O3 -g'
2050 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2051 host_libs='-lm'
2052 host_cflags_filter=echo
2053 host_ldflags_filter=echo
2054
2055 target_path='$(CURDIR)'
2056
2057 # since the object filename is not given with the -MM flag, the compiler
2058 # is only able to print the basename, and we must add the path ourselves
2059 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2060 DEPFLAGS='-MM'
2061
2062 # find source path
2063 if test -f configure; then
2064 source_path=.
2065 else
2066 source_path=$(cd $(dirname "$0"); pwd)
2067 echo "$source_path" | grep -q '[[:blank:]]' &&
2068 die "Out of tree builds are impossible with whitespace in source path."
2069 test -e "$source_path/config.h" &&
2070 die "Out of tree builds are impossible with config.h in source dir."
2071 fi
2072
2073 for v in "$@"; do
2074 r=${v#*=}
2075 l=${v%"$r"}
2076 r=$(sh_quote "$r")
2077 LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2078 done
2079
2080 find_things(){
2081 thing=$1
2082 pattern=$2
2083 file=$source_path/$3
2084 sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2085 }
2086
2087 ENCODER_LIST=$(find_things encoder ENC libavcodec/allcodecs.c)
2088 DECODER_LIST=$(find_things decoder DEC libavcodec/allcodecs.c)
2089 HWACCEL_LIST=$(find_things hwaccel HWACCEL libavcodec/allcodecs.c)
2090 PARSER_LIST=$(find_things parser PARSER libavcodec/allcodecs.c)
2091 BSF_LIST=$(find_things bsf BSF libavcodec/allcodecs.c)
2092 MUXER_LIST=$(find_things muxer _MUX libavformat/allformats.c)
2093 DEMUXER_LIST=$(find_things demuxer DEMUX libavformat/allformats.c)
2094 OUTDEV_LIST=$(find_things outdev OUTDEV libavdevice/alldevices.c)
2095 INDEV_LIST=$(find_things indev _IN libavdevice/alldevices.c)
2096 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2097 FILTER_LIST=$(find_things filter FILTER libavfilter/allfilters.c)
2098
2099 ALL_COMPONENTS="
2100 $BSF_LIST
2101 $DECODER_LIST
2102 $DEMUXER_LIST
2103 $ENCODER_LIST
2104 $FILTER_LIST
2105 $HWACCEL_LIST
2106 $INDEV_LIST
2107 $MUXER_LIST
2108 $OUTDEV_LIST
2109 $PARSER_LIST
2110 $PROTOCOL_LIST
2111 "
2112
2113 for n in $COMPONENT_LIST; do
2114 v=$(toupper ${n%s})_LIST
2115 eval enable \$$v
2116 eval ${n}_if_any="\$$v"
2117 done
2118
2119 enable $ARCH_EXT_LIST
2120
2121 die_unknown(){
2122 echo "Unknown option \"$1\"."
2123 echo "See $0 --help for available options."
2124 exit 1
2125 }
2126
2127 print_3_columns() {
2128 cat | tr ' ' '\n' | sort | pr -r -3 -t
2129 }
2130
2131 show_list() {
2132 suffix=_$1
2133 shift
2134 echo $* | sed s/$suffix//g | print_3_columns
2135 exit 0
2136 }
2137
2138 rand_list(){
2139 IFS=', '
2140 set -- $*
2141 unset IFS
2142 for thing; do
2143 comp=${thing%:*}
2144 prob=${thing#$comp}
2145 prob=${prob#:}
2146 is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2147 echo "prob ${prob:-0.5}"
2148 printf '%s\n' $comp
2149 done
2150 }
2151
2152 do_random(){
2153 action=$1
2154 shift
2155 random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2156 $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2157 }
2158
2159 for opt do
2160 optval="${opt#*=}"
2161 case "$opt" in
2162 --extra-ldflags=*)
2163 add_ldflags $optval
2164 ;;
2165 --extra-libs=*)
2166 add_extralibs $optval
2167 ;;
2168 --disable-devices)
2169 disable $INDEV_LIST $OUTDEV_LIST
2170 ;;
2171 --enable-debug=*)
2172 debuglevel="$optval"
2173 ;;
2174 --disable-programs)
2175 disable $PROGRAM_LIST
2176 ;;
2177 --disable-everything)
2178 map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2179 ;;
2180 --disable-all)
2181 map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2182 disable $LIBRARY_LIST $PROGRAM_LIST doc
2183 ;;
2184 --enable-random|--disable-random)
2185 action=${opt%%-random}
2186 do_random ${action#--} $COMPONENT_LIST
2187 ;;
2188 --enable-random=*|--disable-random=*)
2189 action=${opt%%-random=*}
2190 do_random ${action#--} $optval
2191 ;;
2192 --enable-*=*|--disable-*=*)
2193 eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2194 is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2195 eval list=\$$(toupper $thing)_LIST
2196 name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2197 $action $(filter "$name" $list)
2198 ;;
2199 --enable-?*|--disable-?*)
2200 eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2201 if is_in $option $COMPONENT_LIST; then
2202 test $action = disable && action=unset
2203 eval $action \$$(toupper ${option%s})_LIST
2204 elif is_in $option $CMDLINE_SELECT; then
2205 $action $option
2206 else
2207 die_unknown $opt
2208 fi
2209 ;;
2210 --list-*)
2211 NAME="${opt#--list-}"
2212 is_in $NAME $COMPONENT_LIST || die_unknown $opt
2213 NAME=${NAME%s}
2214 eval show_list $NAME \$$(toupper $NAME)_LIST
2215 ;;
2216 --help|-h) show_help
2217 ;;
2218 *)
2219 optname="${opt%%=*}"
2220 optname="${optname#--}"
2221 optname=$(echo "$optname" | sed 's/-/_/g')
2222 if is_in $optname $CMDLINE_SET; then
2223 eval $optname='$optval'
2224 elif is_in $optname $CMDLINE_APPEND; then
2225 append $optname "$optval"
2226 else
2227 die_unknown $opt
2228 fi
2229 ;;
2230 esac
2231 done
2232
2233 disabled logging && logfile=/dev/null
2234
2235 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2236 set >> $logfile
2237
2238 test -n "$cross_prefix" && enable cross_compile
2239
2240 if enabled cross_compile; then
2241 test -n "$arch" && test -n "$target_os" ||
2242 die "Must specify target arch and OS when cross-compiling"
2243 fi
2244
2245 ar_default="${cross_prefix}${ar_default}"
2246 cc_default="${cross_prefix}${cc_default}"
2247 nm_default="${cross_prefix}${nm_default}"
2248 pkg_config_default="${cross_prefix}${pkg_config_default}"
2249 ranlib="${cross_prefix}${ranlib}"
2250 strip="${cross_prefix}${strip}"
2251
2252 sysinclude_default="${sysroot}/usr/include"
2253
2254 case "$toolchain" in
2255 clang-asan)
2256 cc_default="clang"
2257 add_cflags -fsanitize=address
2258 add_ldflags -fsanitize=address
2259 ;;
2260 clang-tsan)
2261 cc_default="clang"
2262 add_cflags -fsanitize=thread -pie
2263 add_ldflags -fsanitize=thread -pie
2264 ;;
2265 gcc-asan)
2266 cc_default="gcc"
2267 add_cflags -fsanitize=address
2268 add_ldflags -fsanitize=address
2269 ;;
2270 gcc-tsan)
2271 cc_default="gcc"
2272 add_cflags -fsanitize=thread -pie -fPIC
2273 add_ldflags -fsanitize=thread -pie -fPIC
2274 ;;
2275 valgrind-massif)
2276 target_exec_default="valgrind"
2277 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2278 ;;
2279 valgrind-memcheck)
2280 target_exec_default="valgrind"
2281 target_exec_args="--track-origins=yes --leak-check=full"
2282 ;;
2283 msvc)
2284 # Check whether the current MSVC version needs the C99 converter.
2285 # From MSVC 2013 (compiler major version 18) onwards, it does actually
2286 # support enough of C99 to build libav. Default to the new
2287 # behaviour if the regexp was unable to match anything, since this
2288 # successfully parses the version number of existing supported
2289 # versions that require the converter (MSVC 2010 and 2012).
2290 cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2291 if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2292 cc_default="cl"
2293 else
2294 cc_default="c99wrap cl"
2295 fi
2296 ld_default="link"
2297 nm_default="dumpbin -symbols"
2298 ar_default="lib"
2299 target_os_default="win32"
2300 # Use a relative path for TMPDIR. This makes sure all the
2301 # ffconf temp files are written with a relative path, avoiding
2302 # issues with msys/win32 path conversion for MSVC parameters
2303 # such as -Fo<file> or -out:<file>.
2304 TMPDIR=.
2305 ;;
2306 icl)
2307 cc_default="icl"
2308 ld_default="xilink"
2309 nm_default="dumpbin -symbols"
2310 ar_default="xilib"
2311 target_os_default="win32"
2312 TMPDIR=.
2313 ;;
2314 gcov)
2315 add_cflags -fprofile-arcs -ftest-coverage
2316 add_ldflags -fprofile-arcs -ftest-coverage
2317 ;;
2318 hardened)
2319 add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2320 add_ldflags -Wl,-z,relro -Wl,-z,now
2321 ;;
2322 ?*)
2323 die "Unknown toolchain $toolchain"
2324 ;;
2325 esac
2326
2327 set_default arch cc pkg_config sysinclude target_exec target_os
2328 enabled cross_compile || host_cc_default=$cc
2329 set_default host_cc
2330
2331 if ! $pkg_config --version >/dev/null 2>&1; then
2332 warn "$pkg_config not found, library detection may fail."
2333 pkg_config=false
2334 fi
2335
2336 exesuf() {
2337 case $1 in
2338 mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2339 esac
2340 }
2341
2342 EXESUF=$(exesuf $target_os)
2343 HOSTEXESUF=$(exesuf $host_os)
2344
2345 # set temporary file name
2346 : ${TMPDIR:=$TEMPDIR}
2347 : ${TMPDIR:=$TMP}
2348 : ${TMPDIR:=/tmp}
2349
2350 if ! check_cmd mktemp -u XXXXXX; then
2351 # simple replacement for missing mktemp
2352 # NOT SAFE FOR GENERAL USE
2353 mktemp(){
2354 echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2355 }
2356 fi
2357
2358 tmpfile(){
2359 tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2360 (set -C; exec > $tmp) 2>/dev/null ||
2361 die "Unable to create temporary file in $TMPDIR."
2362 append TMPFILES $tmp
2363 eval $1=$tmp
2364 }
2365
2366 trap 'rm -f -- $TMPFILES' EXIT
2367
2368 tmpfile TMPASM .asm
2369 tmpfile TMPC .c
2370 tmpfile TMPE $EXESUF
2371 tmpfile TMPH .h
2372 tmpfile TMPO .o
2373 tmpfile TMPS .S
2374 tmpfile TMPSH .sh
2375 tmpfile TMPV .ver
2376
2377 unset -f mktemp
2378
2379 chmod +x $TMPE
2380
2381 # make sure we can execute files in $TMPDIR
2382 cat > $TMPSH 2>> $logfile <<EOF
2383 #! /bin/sh
2384 EOF
2385 chmod +x $TMPSH >> $logfile 2>&1
2386 if ! $TMPSH >> $logfile 2>&1; then
2387 cat <<EOF
2388 Unable to create and execute files in $TMPDIR. Set the TMPDIR environment
2389 variable to another directory and make sure that it is not mounted noexec.
2390 EOF
2391 die "Sanity test failed."
2392 fi
2393
2394 ccc_flags(){
2395 for flag; do
2396 case $flag in
2397 -std=c99) echo -c99 ;;
2398 -mcpu=*) echo -arch ${flag#*=} ;;
2399 -mieee) echo -ieee ;;
2400 -O*|-fast) echo $flag ;;
2401 -fno-math-errno) echo -assume nomath_errno ;;
2402 -g) echo -g3 ;;
2403 -Wall) echo -msg_enable level2 ;;
2404 -Wno-pointer-sign) echo -msg_disable ptrmismatch1 ;;
2405 -Wl,*) echo $flag ;;
2406 -f*|-W*) ;;
2407 *) echo $flag ;;
2408 esac
2409 done
2410 }
2411
2412 cparser_flags(){
2413 for flag; do
2414 case $flag in
2415 -Wno-switch) echo -Wno-switch-enum ;;
2416 -Wno-format-zero-length) ;;
2417 -Wdisabled-optimization) ;;
2418 -Wno-pointer-sign) echo -Wno-other ;;
2419 *) echo $flag ;;
2420 esac
2421 done
2422 }
2423
2424 msvc_common_flags(){
2425 for flag; do
2426 case $flag in
2427 # In addition to specifying certain flags under the compiler
2428 # specific filters, they must be specified here as well or else the
2429 # generic catch all at the bottom will print the original flag.
2430 -Wall) ;;
2431 -std=c99) ;;
2432 # Common flags
2433 -fomit-frame-pointer) ;;
2434 -g) echo -Z7 ;;
2435 -fno-math-errno) ;;
2436 -fno-common) ;;
2437 -fno-signed-zeros) ;;
2438 -fPIC) ;;
2439 -mthumb) ;;
2440 -march=*) ;;
2441 -lz) echo zlib.lib ;;
2442 -lavifil32) echo vfw32.lib ;;
2443 -lavicap32) echo vfw32.lib user32.lib ;;
2444 -l*) echo ${flag#-l}.lib ;;
2445 *) echo $flag ;;
2446 esac
2447 done
2448 }
2449
2450 msvc_flags(){
2451 msvc_common_flags "$@"
2452 for flag; do
2453 case $flag in
2454 -Wall) echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2455 -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2456 -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2457 -wd4273 ;;
2458 esac
2459 done
2460 }
2461
2462 icl_flags(){
2463 msvc_common_flags "$@"
2464 for flag; do
2465 case $flag in
2466 # Despite what Intel's documentation says -Wall, which is supported
2467 # on Windows, does enable remarks so disable them here.
2468 -Wall) echo $flag -Qdiag-disable:remark ;;
2469 -std=c99) echo -Qstd=c99 ;;
2470 esac
2471 done
2472 }
2473
2474 pgi_flags(){
2475 for flag; do
2476 case $flag in
2477 -flto) echo -Mipa=fast,libopt,libinline,vestigial ;;
2478 -fomit-frame-pointer) echo -Mnoframe ;;
2479 -g) echo -gopt ;;
2480 *) echo $flag ;;
2481 esac
2482 done
2483 }
2484
2485 suncc_flags(){
2486 for flag; do
2487 case $flag in
2488 -march=*|-mcpu=*)
2489 case "${flag#*=}" in
2490 native) echo -xtarget=native ;;
2491 v9|niagara) echo -xarch=sparc ;;
2492 ultrasparc) echo -xarch=sparcvis ;;
2493 ultrasparc3|niagara2) echo -xarch=sparcvis2 ;;
2494 i586|pentium) echo -xchip=pentium ;;
2495 i686|pentiumpro|pentium2) echo -xtarget=pentium_pro ;;
2496 pentium3*|c3-2) echo -xtarget=pentium3 ;;
2497 pentium-m) echo -xarch=sse2 -xchip=pentium3 ;;
2498 pentium4*) echo -xtarget=pentium4 ;;
2499 prescott|nocona) echo -xarch=sse3 -xchip=pentium4 ;;
2500 *-sse3) echo -xarch=sse3 ;;
2501 core2) echo -xarch=ssse3 -xchip=core2 ;;
2502 corei7) echo -xarch=sse4_2 -xchip=nehalem ;;
2503 corei7-avx) echo -xarch=avx -xchip=sandybridge ;;
2504 amdfam10|barcelona|bdver*) echo -xarch=sse4_1 ;;
2505 athlon-4|athlon-[mx]p) echo -xarch=ssea ;;
2506 k8|opteron|athlon64|athlon-fx)
2507 echo -xarch=sse2a ;;
2508 athlon*) echo -xarch=pentium_proa ;;
2509 esac
2510 ;;
2511 -std=c99) echo -xc99 ;;
2512 -fomit-frame-pointer) echo -xregs=frameptr ;;
2513 -fPIC) echo -KPIC -xcode=pic32 ;;
2514 -W*,*) echo $flag ;;
2515 -f*-*|-W*|-mimpure-text) ;;
2516 -shared) echo -G ;;
2517 *) echo $flag ;;
2518 esac
2519 done
2520 }
2521
2522 tms470_flags(){
2523 for flag; do
2524 case $flag in
2525 -march=*|-mcpu=*)
2526 case "${flag#*=}" in
2527 armv7-a|cortex-a*) echo -mv=7a8 ;;
2528 armv7-r|cortex-r*) echo -mv=7r4 ;;
2529 armv7-m|cortex-m*) echo -mv=7m3 ;;
2530 armv6*|arm11*) echo -mv=6 ;;
2531 armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2532 echo -mv=5e ;;
2533 armv4*|arm7*|arm9[24]*) echo -mv=4 ;;
2534 esac
2535 ;;
2536 -mfpu=neon) echo --float_support=vfpv3 --neon ;;
2537 -mfpu=vfp) echo --float_support=vfpv2 ;;
2538 -mfpu=vfpv3) echo --float_support=vfpv3 ;;
2539 -mfpu=vfpv3-d16) echo --float_support=vfpv3d16 ;;
2540 -msoft-float) echo --float_support=vfplib ;;
2541 -O[0-3]|-mf=*) echo $flag ;;
2542 -g) echo -g -mn ;;
2543 -pds=*) echo $flag ;;
2544 -D*|-I*) echo $flag ;;
2545 --gcc|--abi=*) echo $flag ;;
2546 -me) echo $flag ;;
2547 esac
2548 done
2549 }
2550
2551 probe_cc(){
2552 pfx=$1
2553 _cc=$2
2554
2555 unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2556 unset _ld_o _ldflags _ld_lib _ld_path
2557 unset _depflags _DEPCMD _DEPFLAGS
2558 _flags_filter=echo
2559
2560 if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2561 _type=llvm_gcc
2562 gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2563 _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2564 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2565 _cflags_speed='-O3'
2566 _cflags_size='-Os'
2567 elif $_cc -v 2>&1 | grep -qi ^gcc; then
2568 _type=gcc
2569 gcc_version=$($_cc --version | head -n1)
2570 gcc_basever=$($_cc -dumpversion)
2571 gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2572 gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2573 _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2574 if ! $_cc -dumpversion | grep -q '^2\.'; then
2575 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2576 fi
2577 _cflags_speed='-O3'
2578 _cflags_size='-Os'
2579 elif $_cc --version 2>/dev/null | grep -q ^icc; then
2580 _type=icc
2581 _ident=$($_cc --version | head -n1)
2582 _depflags='-MMD'
2583 _cflags_speed='-O3'
2584 _cflags_size='-Os'
2585 _cflags_noopt='-O1'
2586 elif $_cc -v 2>&1 | grep -q xlc; then
2587 _type=xlc
2588 _ident=$($_cc -qversion 2>/dev/null | head -n1)
2589 _cflags_speed='-O5'
2590 _cflags_size='-O5 -qcompact'
2591 elif $_cc -V 2>/dev/null | grep -q Compaq; then
2592 _type=ccc
2593 _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2594 _DEPFLAGS='-M'
2595 _cflags_speed='-fast'
2596 _cflags_size='-O1'
2597 _flags_filter=ccc_flags
2598 elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2599 test -d "$sysroot" || die "No valid sysroot specified."
2600 _type=armcc
2601 _ident=$($_cc --vsn | head -n1)
2602 armcc_conf="$PWD/armcc.conf"
2603 $_cc --arm_linux_configure \
2604 --arm_linux_config_file="$armcc_conf" \
2605 --configure_sysroot="$sysroot" \
2606 --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2607 die "Error creating armcc configuration file."
2608 $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2609 _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2610 as_default="${cross_prefix}gcc"
2611 _depflags='-MMD'
2612 _cflags_speed='-O3'
2613 _cflags_size='-Os'
2614 elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2615 _type=tms470
2616 _ident=$($_cc -version | head -n1 | tr -s ' ')
2617 _flags='--gcc --abi=eabi -me'
2618 _cc_e='-ppl -fe=$@'
2619 _cc_o='-fe=$@'
2620 _depflags='-ppa -ppd=$(@:.o=.d)'
2621 _cflags_speed='-O3 -mf=5'
2622 _cflags_size='-O3 -mf=2'
2623 _flags_filter=tms470_flags
2624 elif $_cc -v 2>&1 | grep -q clang; then
2625 _type=clang
2626 _ident=$($_cc --version | head -n1)
2627 _depflags='-MMD'
2628 _cflags_speed='-O3'
2629 _cflags_size='-Os'
2630 elif $_cc -V 2>&1 | grep -q Sun; then
2631 _type=suncc
2632 _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2633 _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2634 _DEPFLAGS='-xM1 -xc99'
2635 _ldflags='-std=c99'
2636 _cflags_speed='-O5'
2637 _cflags_size='-O5 -xspace'
2638 _flags_filter=suncc_flags
2639 elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2640 _type=pathscale
2641 _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2642 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2643 _cflags_speed='-O2'
2644 _cflags_size='-Os'
2645 _flags_filter='filter_out -Wdisabled-optimization'
2646 elif $_cc -v 2>&1 | grep -q Open64; then
2647 _type=open64
2648 _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2649 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2650 _cflags_speed='-O2'
2651 _cflags_size='-Os'
2652 _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2653 elif $_cc -V 2>&1 | grep -q Portland; then
2654 _type=pgi
2655 _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2656 opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2657 _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2658 _cflags_size="-O2 -Munroll=c:1 $opt_common"
2659 _cflags_noopt="-O1"
2660 _flags_filter=pgi_flags
2661 elif $_cc 2>&1 | grep -q Microsoft; then
2662 _type=msvc
2663 _ident=$($cc 2>&1 | head -n1)
2664 _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2665 _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2666 _cflags_speed="-O2"
2667 _cflags_size="-O1"
2668 if $_cc 2>&1 | grep -q Linker; then
2669 _ld_o='-out:$@'
2670 else
2671 _ld_o='-Fe$@'
2672 fi
2673 _cc_o='-Fo$@'
2674 _cc_e='-P -Fi$@'
2675 _flags_filter=msvc_flags
2676 _ld_lib='lib%.a'
2677 _ld_path='-libpath:'
2678 _flags='-nologo'
2679 _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2680 if [ $pfx = hostcc ]; then
2681 append _cflags -Dsnprintf=_snprintf
2682 fi
2683 elif $_cc 2>&1 | grep -q Intel; then
2684 _type=icl
2685 _ident=$($cc 2>&1 | head -n1)
2686 _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2687 # Not only is O3 broken on 13.x+ but it is slower on all previous
2688 # versions (tested) as well.
2689 _cflags_speed="-O2"
2690 _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2691 if $_cc 2>&1 | grep -q Linker; then
2692 _ld_o='-out:$@'
2693 else
2694 _ld_o='-Fe$@'
2695 fi
2696 _cc_o='-Fo$@'
2697 _cc_e='-P'
2698 _flags_filter=icl_flags
2699 _ld_lib='lib%.a'
2700 _ld_path='-libpath:'
2701 # -Qdiag-error to make icl error when seeing certain unknown arguments
2702 _flags='-nologo -Qdiag-error:4044,10157'
2703 # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2704 # with MSVC which enables it by default.
2705 _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2706 if [ $pfx = hostcc ]; then
2707 append _cflags -Dsnprintf=_snprintf
2708 fi
2709 elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2710 _type=cparser
2711 _ident=$($_cc --version | head -n1)
2712 _depflags='-MMD'
2713 _cflags_speed='-O4'
2714 _cflags_size='-O2'
2715 _flags_filter=cparser_flags
2716 fi
2717
2718 eval ${pfx}_type=\$_type
2719 eval ${pfx}_ident=\$_ident
2720 }
2721
2722 set_ccvars(){
2723 eval ${1}_C=\${_cc_c-\${${1}_C}}
2724 eval ${1}_E=\${_cc_e-\${${1}_E}}
2725 eval ${1}_O=\${_cc_o-\${${1}_O}}
2726
2727 if [ -n "$_depflags" ]; then
2728 eval ${1}_DEPFLAGS=\$_depflags
2729 else
2730 eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2731 eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2732 eval DEP${1}FLAGS=\$_flags
2733 fi
2734 }
2735
2736 probe_cc cc "$cc"
2737 cflags_filter=$_flags_filter
2738 cflags_speed=$_cflags_speed
2739 cflags_size=$_cflags_size
2740 cflags_noopt=$_cflags_noopt
2741 add_cflags $_flags $_cflags
2742 cc_ldflags=$_ldflags
2743 set_ccvars CC
2744
2745 probe_cc hostcc "$host_cc"
2746 host_cflags_filter=$_flags_filter
2747 add_host_cflags $_flags $_cflags
2748 set_ccvars HOSTCC
2749
2750 test -n "$cc_type" && enable $cc_type ||
2751 warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2752
2753 : ${as_default:=$cc}
2754 : ${dep_cc_default:=$cc}
2755 : ${ld_default:=$cc}
2756 : ${host_ld_default:=$host_cc}
2757 set_default ar as dep_cc ld host_ld
2758
2759 probe_cc as "$as"
2760 asflags_filter=$_flags_filter
2761 add_asflags $_flags $_cflags
2762 set_ccvars AS
2763
2764 probe_cc ld "$ld"
2765 ldflags_filter=$_flags_filter
2766 add_ldflags $_flags $_ldflags
2767 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2768 LD_O=${_ld_o-$LD_O}
2769 LD_LIB=${_ld_lib-$LD_LIB}
2770 LD_PATH=${_ld_path-$LD_PATH}
2771
2772 probe_cc hostld "$host_ld"
2773 host_ldflags_filter=$_flags_filter
2774 add_host_ldflags $_flags $_ldflags
2775 HOSTLD_O=${_ld_o-$HOSTLD_O}
2776
2777 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2778 probe_cc depcc "$dep_cc"
2779 CCDEP=${_DEPCMD:-$DEPCMD}
2780 CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2781 DEPCCFLAGS=$_flags
2782 fi
2783
2784 if $ar 2>&1 | grep -q Microsoft; then
2785 arflags="-nologo"
2786 ar_o='-out:$@'
2787 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2788 arflags="rq"
2789 ar_o='$@'
2790 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2791 arflags='-Xany -r -c'
2792 ar_o='$@'
2793 else
2794 arflags="rc"
2795 ar_o='$@'
2796 fi
2797
2798 add_cflags $extra_cflags
2799 add_asflags $extra_cflags
2800
2801 if test -n "$sysroot"; then
2802 case "$cc_type" in
2803 gcc|llvm_gcc|clang)
2804 add_cppflags --sysroot="$sysroot"
2805 add_ldflags --sysroot="$sysroot"
2806 ;;
2807 tms470)
2808 add_cppflags -I"$sysinclude"
2809 add_ldflags --sysroot="$sysroot"
2810 ;;
2811 esac
2812 fi
2813
2814 if test "$cpu" = host; then
2815 enabled cross_compile &&
2816 die "--cpu=host makes no sense when cross-compiling."
2817
2818 case "$cc_type" in
2819 gcc|llvm_gcc)
2820 check_native(){
2821 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2822 sed -n "/cc1.*$1=/{
2823 s/.*$1=\\([^ ]*\\).*/\\1/
2824 p
2825 q
2826 }" $TMPE
2827 }
2828 cpu=$(check_native -march || check_native -mcpu)
2829 ;;
2830 esac
2831
2832 test "${cpu:-host}" = host &&
2833 die "--cpu=host not supported with compiler $cc"
2834 fi
2835
2836 # Deal with common $arch aliases
2837 case "$arch" in
2838 aarch64|arm64)
2839 arch="aarch64"
2840 ;;
2841 arm*)
2842 arch="arm"
2843 ;;
2844 mips*|IP*)
2845 arch="mips"
2846 ;;
2847 parisc*|hppa*)
2848 arch="parisc"
2849 ;;
2850 "Power Macintosh"|ppc*|powerpc*)
2851 arch="ppc"
2852 ;;
2853 s390|s390x)
2854 arch="s390"
2855 ;;
2856 sh4|sh)
2857 arch="sh4"
2858 ;;
2859 sun4u|sparc*)
2860 arch="sparc"
2861 ;;
2862 tilegx|tile-gx)
2863 arch="tilegx"
2864 ;;
2865 i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2866 arch="x86"
2867 ;;
2868 esac
2869
2870 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2871 enable $arch
2872
2873 # Add processor-specific flags
2874 if enabled aarch64; then
2875
2876 case $cpu in
2877 armv*)
2878 cpuflags="-march=$cpu"
2879 ;;
2880 *)
2881 cpuflags="-mcpu=$cpu"
2882 ;;
2883 esac
2884
2885 elif enabled alpha; then
2886
2887 cpuflags="-mcpu=$cpu"
2888
2889 elif enabled arm; then
2890
2891 check_arm_arch() {
2892 check_cpp_condition stddef.h \
2893 "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2894 $cpuflags
2895 }
2896
2897 probe_arm_arch() {
2898 if check_arm_arch 4; then echo armv4;
2899 elif check_arm_arch 4T; then echo armv4t;
2900 elif check_arm_arch 5; then echo armv5;
2901 elif check_arm_arch 5E; then echo armv5e;
2902 elif check_arm_arch 5T; then echo armv5t;
2903 elif check_arm_arch 5TE; then echo armv5te;
2904 elif check_arm_arch 5TEJ; then echo armv5te;
2905 elif check_arm_arch 6; then echo armv6;
2906 elif check_arm_arch 6J; then echo armv6j;
2907 elif check_arm_arch 6K; then echo armv6k;
2908 elif check_arm_arch 6Z; then echo armv6z;
2909 elif check_arm_arch 6ZK; then echo armv6zk;
2910 elif check_arm_arch 6T2; then echo armv6t2;
2911 elif check_arm_arch 7; then echo armv7;
2912 elif check_arm_arch 7A 7_A; then echo armv7-a;
2913 elif check_arm_arch 7R 7_R; then echo armv7-r;
2914 elif check_arm_arch 7M 7_M; then echo armv7-m;
2915 elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2916 elif check_arm_arch 8A 8_A; then echo armv8-a;
2917 fi
2918 }
2919
2920 [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2921
2922 case $cpu in
2923 armv*)
2924 cpuflags="-march=$cpu"
2925 subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2926 ;;
2927 *)
2928 cpuflags="-mcpu=$cpu"
2929 case $cpu in
2930 cortex-a*) subarch=armv7a ;;
2931 cortex-r*) subarch=armv7r ;;
2932 cortex-m*) enable thumb; subarch=armv7m ;;
2933 arm11*) subarch=armv6 ;;
2934 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2935 armv4*|arm7*|arm9[24]*) subarch=armv4 ;;
2936 *) subarch=$(probe_arm_arch) ;;
2937 esac
2938 ;;
2939 esac
2940
2941 case "$subarch" in
2942 armv5t*) enable fast_clz ;;
2943 armv[6-8]*) enable fast_clz fast_unaligned ;;
2944 esac
2945
2946 elif enabled avr32; then
2947
2948 case $cpu in
2949 ap7[02]0[0-2])
2950 subarch="avr32_ap"
2951 cpuflags="-mpart=$cpu"
2952 ;;
2953 ap)
2954 subarch="avr32_ap"
2955 cpuflags="-march=$cpu"
2956 ;;
2957 uc3[ab]*)
2958 subarch="avr32_uc"
2959 cpuflags="-mcpu=$cpu"
2960 ;;
2961 uc)
2962 subarch="avr32_uc"
2963 cpuflags="-march=$cpu"
2964 ;;
2965 esac
2966
2967 elif enabled bfin; then
2968
2969 cpuflags="-mcpu=$cpu"
2970
2971 elif enabled mips; then
2972
2973 cpuflags="-march=$cpu"
2974
2975 elif enabled ppc; then
2976
2977 case $(tolower $cpu) in
2978 601|ppc601|powerpc601)
2979 cpuflags="-mcpu=601"
2980 disable altivec
2981 ;;
2982 603*|ppc603*|powerpc603*)
2983 cpuflags="-mcpu=603"
2984 disable altivec
2985 ;;
2986 604*|ppc604*|powerpc604*)
2987 cpuflags="-mcpu=604"
2988 disable altivec
2989 ;;
2990 g3|75*|ppc75*|powerpc75*)
2991 cpuflags="-mcpu=750"
2992 disable altivec
2993 ;;
2994 g4|745*|ppc745*|powerpc745*)
2995 cpuflags="-mcpu=7450"
2996 ;;
2997 74*|ppc74*|powerpc74*)
2998 cpuflags="-mcpu=7400"
2999 ;;
3000 g5|970|ppc970|powerpc970)
3001 cpuflags="-mcpu=970"
3002 ;;
3003 power[3-7]*)
3004 cpuflags="-mcpu=$cpu"
3005 ;;
3006 cell)
3007 cpuflags="-mcpu=cell"
3008 enable ldbrx
3009 ;;
3010 e500mc)
3011 cpuflags="-mcpu=e500mc"
3012 disable altivec
3013 ;;
3014 e500v2)
3015 cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3016 disable altivec
3017 ;;
3018 e500)
3019 cpuflags="-mcpu=8540 -mhard-float"
3020 disable altivec
3021 ;;
3022 esac
3023
3024 elif enabled sparc; then
3025
3026 case $cpu in
3027 cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3028 cpuflags="-mcpu=$cpu"
3029 disable vis
3030 ;;
3031 ultrasparc*|niagara[234])
3032 cpuflags="-mcpu=$cpu"
3033 ;;
3034 esac
3035
3036 elif enabled x86; then
3037
3038 case $cpu in
3039 i[345]86|pentium)
3040 cpuflags="-march=$cpu"
3041 disable mmx
3042 ;;
3043 # targets that do NOT support nopl and conditional mov (cmov)
3044 pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3045 cpuflags="-march=$cpu"
3046 disable i686
3047 ;;
3048 # targets that do support nopl and conditional mov (cmov)
3049 i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3050 cpuflags="-march=$cpu"
3051 enable i686
3052 enable fast_cmov
3053 ;;
3054 # targets that do support conditional mov but on which it's slow
3055 pentium4|pentium4m|prescott|nocona)
3056 cpuflags="-march=$cpu"
3057 enable i686
3058 disable fast_cmov
3059 ;;
3060 esac
3061
3062 fi
3063
3064 if [ "$cpu" != generic ]; then
3065 add_cflags $cpuflags
3066 add_asflags $cpuflags
3067 fi
3068
3069 # compiler sanity check
3070 check_exec <<EOF
3071 int main(void){ return 0; }
3072 EOF
3073 if test "$?" != 0; then
3074 echo "$cc is unable to create an executable file."
3075 if test -z "$cross_prefix" && ! enabled cross_compile ; then
3076 echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3077 echo "Only do this if you know what cross compiling means."
3078 fi
3079 die "C compiler test failed."
3080 fi
3081
3082 add_cppflags -D_ISOC99_SOURCE
3083 check_cflags -std=c99
3084 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3085 #include <stdlib.h>
3086 EOF
3087 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3088 #include <stdlib.h>
3089 EOF
3090
3091 check_host_cflags -std=c99
3092 check_host_cflags -Wall
3093
3094 check_64bit(){
3095 arch32=$1
3096 arch64=$2
3097 expr=$3
3098 check_code cc "" "int test[2*($expr) - 1]" &&
3099 subarch=$arch64 || subarch=$arch32
3100 }
3101
3102 case "$arch" in
3103 aarch64|alpha|ia64)
3104 spic=$shared
3105 ;;
3106 mips)
3107 check_64bit mips mips64 '_MIPS_SIM > 1'
3108 spic=$shared
3109 ;;
3110 parisc)
3111 check_64bit parisc parisc64 'sizeof(void *) > 4'
3112 spic=$shared
3113 ;;
3114 ppc)
3115 check_64bit ppc ppc64 'sizeof(void *) > 4'
3116 spic=$shared
3117 ;;
3118 sparc)
3119 check_64bit sparc sparc64 'sizeof(void *) > 4'
3120 spic=$shared
3121 ;;
3122 x86)
3123 check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3124 if test "$subarch" = "x86_64"; then
3125 spic=$shared
3126 fi
3127 ;;
3128 esac
3129
3130 enable $subarch
3131 enabled spic && enable_weak pic
3132
3133 # OS specific
3134 case $target_os in
3135 aix)
3136 SHFLAGS=-shared
3137 add_cppflags '-I\$(SRC_PATH)/compat/aix'
3138 enabled shared && add_ldflags -Wl,-brtl
3139 ;;
3140 haiku)
3141 prefix_default="/boot/common"
3142 network_extralibs="-lnetwork"
3143 host_libs=
3144 ;;
3145 sunos)
3146 SHFLAGS='-shared -Wl,-h,$$(@F)'
3147 enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3148 network_extralibs="-lsocket -lnsl"
3149 add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3150 # When using suncc to build, the Solaris linker will mark
3151 # an executable with each instruction set encountered by
3152 # the Solaris assembler. As our libraries contain their own
3153 # guards for processor-specific code, instead suppress
3154 # generation of the HWCAPS ELF section on Solaris x86 only.
3155 enabled_all suncc x86 &&
3156 echo "hwcap_1 = OVERRIDE;" > mapfile &&
3157 add_ldflags -Wl,-M,mapfile
3158 nm_default='nm -P -g'
3159 ;;
3160 netbsd)
3161 disable symver
3162 oss_indev_extralibs="-lossaudio"
3163 oss_outdev_extralibs="-lossaudio"
3164 ;;
3165 openbsd|bitrig)
3166 disable symver
3167 SHFLAGS='-shared'
3168 SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3169 SLIB_INSTALL_LINKS=
3170 oss_indev_extralibs="-lossaudio"
3171 oss_outdev_extralibs="-lossaudio"
3172 ;;
3173 dragonfly)
3174 disable symver
3175 ;;
3176 freebsd)
3177 ;;
3178 bsd/os)
3179 add_extralibs -lpoll -lgnugetopt
3180 ;;
3181 darwin)
3182 gas="gas-preprocessor.pl $cc"
3183 enabled ppc && add_asflags -force_cpusubtype_ALL
3184 SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3185 enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3186 add_ldflags -Wl,-dynamic,-search_paths_first
3187 SLIBSUF=".dylib"
3188 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3189 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3190 objformat="macho"
3191 enabled x86_64 && objformat="macho64"
3192 enabled_any pic shared ||
3193 { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3194 ;;
3195 mingw32*)
3196 if test $target_os = "mingw32ce"; then
3197 disable network
3198 else
3199 target_os=mingw32
3200 fi
3201 LIBTARGET=i386
3202 if enabled x86_64; then
3203 LIBTARGET="i386:x86-64"
3204 elif enabled arm; then
3205 LIBTARGET=arm-wince
3206 fi
3207 check_ldflags -Wl,--nxcompat
3208 check_ldflags -Wl,--dynamicbase
3209 shlibdir_default="$bindir_default"
3210 SLIBPREF=""
3211 SLIBSUF=".dll"
3212 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3213 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3214 SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3215 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3216 SLIB_INSTALL_LINKS=
3217 SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3218 SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3219 SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3220 objformat="win32"
3221 dlltool="${cross_prefix}dlltool"
3222 ranlib=:
3223 enable dos_paths
3224 ;;
3225 win32|win64)
3226 disable symver
3227 if enabled shared; then
3228 # Link to the import library instead of the normal static library
3229 # for shared libs.
3230 LD_LIB='%.lib'
3231 # Cannot build both shared and static libs with MSVC or icl.
3232 disable static
3233 fi
3234 shlibdir_default="$bindir_default"
3235 SLIBPREF=""
3236 SLIBSUF=".dll"
3237 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3238 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3239 SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3240 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3241 SLIB_INSTALL_LINKS=
3242 SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3243 SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3244 SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3245 objformat="win32"
3246 ranlib=:
3247 enable dos_paths
3248 ;;
3249 cygwin*)
3250 target_os=cygwin
3251 shlibdir_default="$bindir_default"
3252 SLIBPREF="cyg"
3253 SLIBSUF=".dll"
3254 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3255 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3256 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3257 SLIB_INSTALL_LINKS=
3258 SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3259 SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3260 objformat="win32"
3261 enable dos_paths
3262 ;;
3263 *-dos|freedos|opendos)
3264 network_extralibs="-lsocket"
3265 objformat="coff"
3266 enable dos_paths
3267 add_cppflags -U__STRICT_ANSI__
3268 ;;
3269 linux)
3270 enable dv1394
3271 ;;
3272 irix*)
3273 target_os=irix
3274 ranlib="echo ignoring ranlib"
3275 ;;
3276 os/2*)
3277 ln_s="cp -f"
3278 objformat="aout"
3279 add_cppflags -D_GNU_SOURCE
3280 add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3281 SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3282 LIBSUF="_s.a"
3283 SLIBPREF=""
3284 SLIBSUF=".dll"
3285 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3286 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3287 SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3288 echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3289 echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3290 echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3291 echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3292 emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3293 SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3294 emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3295 SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3296 enable dos_paths
3297 ;;
3298 gnu/kfreebsd)
3299 add_cppflags -D_BSD_SOURCE
3300 ;;
3301 gnu)
3302 ;;
3303 qnx)
3304 add_cppflags -D_QNX_SOURCE
3305 network_extralibs="-lsocket"
3306 ;;
3307 symbian)
3308 SLIBSUF=".dll"
3309 enable dos_paths
3310 add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3311 add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3312 add_ldflags -Wl,--target1-abs,--no-undefined \
3313 -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3314 -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3315 add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3316 -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3317 -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3318 ;;
3319 osf1)
3320 add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3321 ;;
3322 minix)
3323 ;;
3324 plan9)
3325 add_cppflags -D_C99_SNPRINTF_EXTENSION \
3326 -D_REENTRANT_SOURCE \
3327 -D_RESEARCH_SOURCE \
3328 -DFD_SETSIZE=96 \
3329 -DHAVE_SOCK_OPTS
3330 add_compat strtod.o strtod=avpriv_strtod
3331 network_extralibs='-lbsd'
3332 exeobjs=compat/plan9/main.o
3333 disable avserver
3334 cp_f='cp'
3335 ;;
3336 none)
3337 ;;
3338 *)
3339 die "Unknown OS '$target_os'."
3340 ;;
3341 esac
3342
3343 # determine libc flavour
3344
3345 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3346 if check_cpp_condition features.h "defined __UCLIBC__"; then
3347 libc_type=uclibc
3348 add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3349 elif check_cpp_condition features.h "defined __GLIBC__"; then
3350 libc_type=glibc
3351 add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3352 # MinGW headers can be installed on Cygwin, so check for newlib first.
3353 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3354 libc_type=newlib
3355 add_cppflags -U__STRICT_ANSI__
3356 elif check_header _mingw.h; then
3357 libc_type=mingw
3358 check_cpp_condition _mingw.h \
3359 "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3360 (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3361 die "ERROR: MinGW runtime version must be >= 3.15."
3362 add_cppflags -U__STRICT_ANSI__
3363 elif check_func_headers stdlib.h _get_doserrno; then
3364 libc_type=msvcrt
3365 add_compat strtod.o strtod=avpriv_strtod
3366 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf \
3367 _snprintf=avpriv_snprintf \
3368 vsnprintf=avpriv_vsnprintf
3369 # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3370 # 0x601 by default unless something else is set by the user.
3371 # This can easily lead to us detecting functions only present
3372 # in such new versions and producing binaries requiring windows 7.0.
3373 # Therefore explicitly set the default to XP unless the user has
3374 # set something else on the command line.
3375 check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3376 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3377 libc_type=klibc
3378 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3379 libc_type=bionic
3380 add_compat strtod.o strtod=avpriv_strtod
3381 fi
3382
3383 test -n "$libc_type" && enable $libc_type
3384
3385 # hacks for compiler/libc/os combinations
3386
3387 if enabled_all tms470 glibc; then
3388 CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3389 add_cppflags -D__USER_LABEL_PREFIX__=
3390 add_cppflags -D__builtin_memset=memset
3391 add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3392 add_cflags -pds=48 # incompatible redefinition of macro
3393 fi
3394
3395 if enabled_all ccc glibc; then
3396 add_ldflags -Wl,-z,now # calls to libots crash without this
3397 fi
3398
3399 esc(){
3400 echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3401 }
3402
3403 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3404
3405 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3406
3407 set_default $PATHS_LIST
3408 set_default nm
3409
3410 # we need to build at least one lib type
3411 if ! enabled_any static shared; then
3412 cat <<EOF
3413 At least one library type must be built.
3414 Specify --enable-static to build the static libraries or --enable-shared to
3415 build the shared libraries as well. To only build the shared libraries specify
3416 --disable-static in addition to --enable-shared.
3417 EOF
3418 exit 1;
3419 fi
3420
3421 die_license_disabled() {
3422 enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3423 }
3424
3425 die_license_disabled gpl libcdio
3426 die_license_disabled gpl libx264
3427 die_license_disabled gpl libxavs
3428 die_license_disabled gpl libxvid
3429 die_license_disabled gpl x11grab
3430
3431 die_license_disabled nonfree libfaac
3432 die_license_disabled nonfree libfdk_aac
3433 die_license_disabled nonfree openssl
3434
3435 die_license_disabled version3 libopencore_amrnb
3436 die_license_disabled version3 libopencore_amrwb
3437 die_license_disabled version3 libvo_aacenc
3438 die_license_disabled version3 libvo_amrwbenc
3439
3440 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3441
3442 disabled optimizations || check_cflags -fomit-frame-pointer
3443
3444 enable_weak_pic() {
3445 disabled pic && return
3446 enable pic
3447 add_cppflags -DPIC
3448 case "$target_os" in
3449 mingw*|cygwin*)
3450 ;;
3451 *)
3452 add_cflags -fPIC
3453 ;;
3454 esac
3455 add_asflags -fPIC
3456 }
3457
3458 enabled pic && enable_weak_pic
3459
3460 check_cc <<EOF || die "Symbol mangling check failed."
3461 int ff_extern;
3462 EOF
3463 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3464 extern_prefix=${sym%%ff_extern*}
3465
3466 check_cc <<EOF && enable_weak inline_asm
3467 void foo(void) { __asm__ volatile ("" ::); }
3468 EOF
3469
3470 _restrict=
3471 for restrict_keyword in restrict __restrict__ __restrict; do
3472 check_cc <<EOF && _restrict=$restrict_keyword && break
3473 void foo(char * $restrict_keyword p);
3474 EOF
3475 done
3476
3477 check_cc <<EOF && enable pragma_deprecated
3478 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3479 EOF
3480
3481 check_cc <<EOF && enable attribute_packed
3482 struct { int x; } __attribute__((packed)) x;
3483 EOF
3484
3485 check_cc <<EOF && enable attribute_may_alias
3486 union { int x; } __attribute__((may_alias)) x;
3487 EOF
3488
3489 check_cc <<EOF || die "endian test failed"
3490 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3491 EOF
3492 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3493
3494 check_inline_asm inline_asm_labels '"1:\n"'
3495
3496 if enabled alpha; then
3497
3498 check_cflags -mieee
3499
3500 elif enabled arm; then
3501
3502 check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3503 enabled thumb && check_cflags -mthumb || check_cflags -marm
3504 nogas=die
3505
3506 if check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3507 enable vfp_args
3508 elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3509 case "${cross_prefix:-$cc}" in
3510 *hardfloat*) enable vfp_args; fpabi=vfp ;;
3511 *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3512 __asm__ (".eabi_attribute 28, 1");
3513 int main(void) { return 0; }
3514 EOF
3515 esac
3516 warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3517 fi
3518
3519 enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3520 enabled armv6 && check_insn armv6 'sadd16 r0, r0, r0'
3521 enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3522 enabled neon && check_insn neon 'vadd.i16 q0, q0, q0'
3523 enabled vfp && check_insn vfp 'fadds s0, s0, s0'
3524 enabled vfpv3 && check_insn vfpv3 'vmov.f32 s0, #1.0'
3525
3526 [ $target_os = linux ] ||
3527 map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3528 $ARCH_EXT_LIST_ARM
3529
3530 check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3531 check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3532
3533 [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3534
3535 elif enabled mips; then
3536
3537 check_inline_asm loongson '"dmult.g $1, $2, $3"'
3538
3539 elif enabled parisc; then
3540
3541 if enabled gcc; then
3542 case $($cc -dumpversion) in
3543 4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3544 esac
3545 fi
3546
3547 elif enabled ppc; then
3548
3549 enable local_aligned_8 local_aligned_16
3550
3551 check_inline_asm dcbzl '"dcbzl 0, %0" :: "r"(0)'
3552 check_inline_asm ibm_asm '"add 0, 0, 0"'
3553 check_inline_asm ppc4xx '"maclhw r10, r11, r12"'
3554 check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3555
3556 # AltiVec flags: The FSF version of GCC differs from the Apple version
3557 if enabled altivec; then
3558 nogas=warn
3559 check_cflags -maltivec -mabi=altivec &&
3560 { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3561 check_cflags -faltivec
3562
3563 # check if our compiler supports Motorola AltiVec C API
3564 check_cc <<EOF || disable altivec
3565 $inc_altivec_h
3566 int main(void) {
3567 vector signed int v1 = (vector signed int) { 0 };
3568 vector signed int v2 = (vector signed int) { 1 };
3569 v1 = vec_add(v1, v2);
3570 return 0;
3571 }
3572 EOF
3573
3574 enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3575 fi
3576
3577 elif enabled sparc; then
3578
3579 enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3580
3581 elif enabled x86; then
3582
3583 check_builtin rdtsc intrin.h "__rdtsc()"
3584 check_builtin mm_empty mmintrin.h "_mm_empty()"
3585
3586 enable local_aligned_8 local_aligned_16
3587
3588 # check whether EBP is available on x86
3589 # As 'i' is stored on the stack, this program will crash
3590 # if the base pointer is used to access it because the
3591 # base pointer is cleared in the inline assembly code.
3592 check_exec_crash <<EOF && enable ebp_available
3593 volatile int i=0;
3594 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3595 return i;
3596 EOF
3597
3598 # check whether EBX is available on x86
3599 check_inline_asm ebx_available '""::"b"(0)' &&
3600 check_inline_asm ebx_available '"":::"%ebx"'
3601
3602 # check whether xmm clobbers are supported
3603 check_inline_asm xmm_clobbers '"":::"%xmm0"'
3604
3605 # check whether binutils is new enough to compile SSSE3/MMXEXT
3606 enabled ssse3 && check_inline_asm ssse3_inline '"pabsw %xmm0, %xmm0"'
3607 enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3608
3609 if ! disabled_any asm mmx yasm; then
3610 if check_cmd $yasmexe --version; then
3611 enabled x86_64 && yasm_extra="-m amd64"
3612 yasm_debug="-g dwarf2"
3613 elif check_cmd nasm -v; then
3614 yasmexe=nasm
3615 yasm_debug="-g -F dwarf"
3616 enabled x86_64 && test "$objformat" = elf && objformat=elf64
3617 fi
3618
3619 YASMFLAGS="-f $objformat $yasm_extra"
3620 enabled pic && append YASMFLAGS "-DPIC"
3621 test -n "$extern_prefix" && append YASMFLAGS "-DPREFIX"
3622 case "$objformat" in
3623 elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3624 esac
3625
3626 check_yasm "movbe ecx, [5]" && enable yasm ||
3627 die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3628 check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3629 check_yasm "CPU amdnop" && enable cpunop
3630 fi
3631
3632 case "$cpu" in
3633 athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3634 disable fast_clz
3635 ;;
3636 esac
3637
3638 fi
3639
3640 if enabled asm; then
3641 as=${gas:=$as}
3642 check_as <<EOF && enable gnu_as || \
3643 $nogas "GNU assembler not found, install gas-preprocessor"
3644 .macro m n
3645 \n: .int 0
3646 .endm
3647 m x
3648 EOF
3649 fi
3650
3651 check_ldflags -Wl,--as-needed
3652
3653 if check_func dlopen; then
3654 ldl=
3655 elif check_func dlopen -ldl; then
3656 ldl=-ldl
3657 fi
3658
3659 if ! disabled network; then
3660 check_type "sys/types.h sys/socket.h" socklen_t
3661 check_type netdb.h "struct addrinfo"
3662 check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3663 check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3664 check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3665 check_type netinet/in.h "struct sockaddr_in6"
3666 check_type poll.h "struct pollfd"
3667 check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3668 check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3669 check_type netinet/sctp.h "struct sctp_event_subscribe"
3670 check_func getaddrinfo $network_extralibs
3671 check_func getservbyport $network_extralibs
3672 # Prefer arpa/inet.h over winsock2
3673 if check_header arpa/inet.h ; then
3674 check_func closesocket
3675 elif check_header winsock2.h ; then
3676 check_func_headers winsock2.h closesocket -lws2 &&
3677 network_extralibs="-lws2" ||
3678 { check_func_headers winsock2.h closesocket -lws2_32 &&
3679 network_extralibs="-lws2_32"; }
3680 check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3681 check_type ws2tcpip.h socklen_t
3682 check_type ws2tcpip.h "struct addrinfo"
3683 check_type ws2tcpip.h "struct group_source_req"
3684 check_type ws2tcpip.h "struct ip_mreq_source"
3685 check_type ws2tcpip.h "struct ipv6_mreq"
3686 check_type winsock2.h "struct pollfd"
3687 check_type ws2tcpip.h "struct sockaddr_in6"
3688 check_type ws2tcpip.h "struct sockaddr_storage"
3689 check_struct winsock2.h "struct sockaddr" sa_len
3690 else
3691 disable network
3692 fi
3693 fi
3694
3695 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3696 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3697
3698 check_func fcntl
3699 check_func fork