1ccd75ff6d4e53d87a1c72046a2bc7437de7d0e6
[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 "$@")
660 }
661
662 add_stripflags(){
663 append STRIPFLAGS "$@"
664 }
665
666 add_extralibs(){
667 prepend extralibs $($ldflags_filter "$@")
668 }
669
670 add_host_cppflags(){
671 append host_cppflags "$@"
672 }
673
674 add_host_cflags(){
675 append host_cflags $($host_cflags_filter "$@")
676 }
677
678 add_host_ldflags(){
679 append host_ldflags $($host_ldflags_filter "$@")
680 }
681
682 add_compat(){
683 append compat_objs $1
684 shift
685 map 'add_cppflags -D$v' "$@"
686 }
687
688 check_cmd(){
689 log "$@"
690 "$@" >> $logfile 2>&1
691 }
692
693 cc_o(){
694 eval printf '%s\\n' $CC_O
695 }
696
697 cc_e(){
698 eval printf '%s\\n' $CC_E
699 }
700
701 check_cc(){
702 log check_cc "$@"
703 cat > $TMPC
704 log_file $TMPC
705 check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
706 }
707
708 check_cpp(){
709 log check_cpp "$@"
710 cat > $TMPC
711 log_file $TMPC
712 check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
713 }
714
715 as_o(){
716 eval printf '%s\\n' $AS_O
717 }
718
719 check_as(){
720 log check_as "$@"
721 cat > $TMPS
722 log_file $TMPS
723 check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
724 }
725
726 check_inline_asm(){
727 log check_inline_asm "$@"
728 name="$1"
729 code="$2"
730 shift 2
731 disable $name
732 check_cc "$@" <<EOF && enable $name
733 void foo(void){ __asm__ volatile($code); }
734 EOF
735 }
736
737 check_insn(){
738 log check_insn "$@"
739 check_inline_asm ${1}_inline "\"$2\""
740 echo "$2" | check_as && enable ${1}_external || disable ${1}_external
741 }
742
743 check_yasm(){
744 log check_yasm "$@"
745 echo "$1" > $TMPS
746 log_file $TMPS
747 shift 1
748 check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
749 }
750
751 ld_o(){
752 eval printf '%s\\n' $LD_O
753 }
754
755 check_ld(){
756 log check_ld "$@"
757 flags=$(filter_out '-l*' "$@")
758 libs=$(filter '-l*' "$@")
759 check_cc $($cflags_filter $flags) || return
760 flags=$($ldflags_filter $flags)
761 libs=$($ldflags_filter $libs)
762 check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
763 }
764
765 check_code(){
766 log check_code "$@"
767 check=$1
768 headers=$2
769 code=$3
770 shift 3
771 {
772 for hdr in $headers; do
773 echo "#include <$hdr>"
774 done
775 echo "int main(void) { $code; return 0; }"
776 } | check_$check "$@"
777 }
778
779 check_cppflags(){
780 log check_cppflags "$@"
781 check_cc "$@" <<EOF && append CPPFLAGS "$@"
782 int x;
783 EOF
784 }
785
786 test_cflags(){
787 log test_cflags "$@"
788 set -- $($cflags_filter "$@")
789 check_cc "$@" <<EOF
790 int x;
791 EOF
792 }
793
794 check_cflags(){
795 log check_cflags "$@"
796 test_cflags "$@" && add_cflags "$@"
797 }
798
799 test_ldflags(){
800 log test_ldflags "$@"
801 check_ld "$@" <<EOF
802 int main(void){ return 0; }
803 EOF
804 }
805
806 check_ldflags(){
807 log check_ldflags "$@"
808 test_ldflags "$@" && add_ldflags "$@"
809 }
810
811 test_stripflags(){
812 log test_stripflags "$@"
813 # call check_cc to get a fresh TMPO
814 check_cc <<EOF
815 int main(void) { return 0; }
816 EOF
817 check_cmd $strip $STRIPFLAGS "$@" $TMPO
818 }
819
820 check_stripflags(){
821 log check_stripflags "$@"
822 test_stripflags "$@" && add_stripflags "$@"
823 }
824
825 check_header(){
826 log check_header "$@"
827 header=$1
828 shift
829 disable_safe $header
830 check_cpp "$@" <<EOF && enable_safe $header
831 #include <$header>
832 int x;
833 EOF
834 }
835
836 check_func(){
837 log check_func "$@"
838 func=$1
839 shift
840 disable $func
841 check_ld "$@" <<EOF && enable $func
842 extern int $func();
843 int main(void){ $func(); }
844 EOF
845 }
846
847 check_mathfunc(){
848 log check_mathfunc "$@"
849 func=$1
850 narg=$2
851 shift 2
852 test $narg = 2 && args="f, g" || args="f"
853 disable $func
854 check_ld "$@" <<EOF && enable $func
855 #include <math.h>
856 float foo(float f, float g) { return $func($args); }
857 int main(void){ return 0; }
858 EOF
859 }
860
861 check_func_headers(){
862 log check_func_headers "$@"
863 headers=$1
864 funcs=$2
865 shift 2
866 {
867 for hdr in $headers; do
868 echo "#include <$hdr>"
869 done
870 for func in $funcs; do
871 echo "long check_$func(void) { return (long) $func; }"
872 done
873 echo "int main(void) { return 0; }"
874 } | check_ld "$@" && enable $funcs && enable_safe $headers
875 }
876
877 check_cpp_condition(){
878 log check_cpp_condition "$@"
879 header=$1
880 condition=$2
881 shift 2
882 check_cpp "$@" <<EOF
883 #include <$header>
884 #if !($condition)
885 #error "unsatisfied condition: $condition"
886 #endif
887 EOF
888 }
889
890 check_lib(){
891 log check_lib "$@"
892 header="$1"
893 func="$2"
894 shift 2
895 check_header $header && check_func $func "$@" && add_extralibs "$@"
896 }
897
898 check_lib2(){
899 log check_lib2 "$@"
900 headers="$1"
901 funcs="$2"
902 shift 2
903 check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
904 }
905
906 check_pkg_config(){
907 log check_pkg_config "$@"
908 pkg="$1"
909 headers="$2"
910 funcs="$3"
911 shift 3
912 check_cmd $pkg_config --exists --print-errors $pkg || return
913 pkg_cflags=$($pkg_config --cflags $pkg)
914 pkg_libs=$($pkg_config --libs $pkg)
915 check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
916 set_safe ${pkg}_cflags $pkg_cflags &&
917 set_safe ${pkg}_libs $pkg_libs
918 }
919
920 check_exec(){
921 check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
922 }
923
924 check_exec_crash(){
925 code=$(cat)
926
927 # exit() is not async signal safe. _Exit (C99) and _exit (POSIX)
928 # are safe but may not be available everywhere. Thus we use
929 # raise(SIGTERM) instead. The check is run in a subshell so we
930 # can redirect the "Terminated" message from the shell. SIGBUS
931 # is not defined by standard C so it is used conditionally.
932
933 (check_exec "$@") >> $logfile 2>&1 <<EOF
934 #include <signal.h>
935 static void sighandler(int sig){
936 raise(SIGTERM);
937 }
938 int foo(void){
939 $code
940 }
941 int (*func_ptr)(void) = foo;
942 int main(void){
943 signal(SIGILL, sighandler);
944 signal(SIGFPE, sighandler);
945 signal(SIGSEGV, sighandler);
946 #ifdef SIGBUS
947 signal(SIGBUS, sighandler);
948 #endif
949 return func_ptr();
950 }
951 EOF
952 }
953
954 check_type(){
955 log check_type "$@"
956 headers=$1
957 type=$2
958 shift 2
959 disable_safe "$type"
960 check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
961 }
962
963 check_struct(){
964 log check_struct "$@"
965 headers=$1
966 struct=$2
967 member=$3
968 shift 3
969 disable_safe "${struct}_${member}"
970 check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
971 enable_safe "${struct}_${member}"
972 }
973
974 check_builtin(){
975 log check_builtin "$@"
976 name=$1
977 headers=$2
978 builtin=$3
979 shift 3
980 disable "$name"
981 check_code ld "$headers" "$builtin" "$@" && enable "$name"
982 }
983
984 require(){
985 name="$1"
986 header="$2"
987 func="$3"
988 shift 3
989 check_lib $header $func "$@" || die "ERROR: $name not found"
990 }
991
992 require2(){
993 name="$1"
994 headers="$2"
995 func="$3"
996 shift 3
997 check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
998 }
999
1000 require_pkg_config(){
1001 pkg="$1"
1002 check_pkg_config "$@" || die "ERROR: $pkg not found"
1003 add_cflags $(get_safe ${pkg}_cflags)
1004 add_extralibs $(get_safe ${pkg}_libs)
1005 }
1006
1007 hostcc_e(){
1008 eval printf '%s\\n' $HOSTCC_E
1009 }
1010
1011 hostcc_o(){
1012 eval printf '%s\\n' $HOSTCC_O
1013 }
1014
1015 check_host_cc(){
1016 log check_host_cc "$@"
1017 cat > $TMPC
1018 log_file $TMPC
1019 check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1020 }
1021
1022 check_host_cpp(){
1023 log check_host_cpp "$@"
1024 cat > $TMPC
1025 log_file $TMPC
1026 check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1027 }
1028
1029 check_host_cppflags(){
1030 log check_host_cppflags "$@"
1031 check_host_cc "$@" <<EOF && append host_cppflags "$@"
1032 int x;
1033 EOF
1034 }
1035
1036 check_host_cflags(){
1037 log check_host_cflags "$@"
1038 set -- $($host_cflags_filter "$@")
1039 check_host_cc "$@" <<EOF && append host_cflags "$@"
1040 int x;
1041 EOF
1042 }
1043
1044 check_host_cpp_condition(){
1045 log check_host_cpp_condition "$@"
1046 header=$1
1047 condition=$2
1048 shift 2
1049 check_host_cpp "$@" <<EOF
1050 #include <$header>
1051 #if !($condition)
1052 #error "unsatisfied condition: $condition"
1053 #endif
1054 EOF
1055 }
1056
1057 apply(){
1058 file=$1
1059 shift
1060 "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1061 }
1062
1063 cp_if_changed(){
1064 cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1065 mkdir -p "$(dirname $2)"
1066 $cp_f "$1" "$2"
1067 }
1068
1069 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1070 # system-dependent things.
1071
1072 COMPONENT_LIST="
1073 bsfs
1074 decoders
1075 demuxers
1076 encoders
1077 filters
1078 hwaccels
1079 indevs
1080 muxers
1081 outdevs
1082 parsers
1083 protocols
1084 "
1085
1086 EXAMPLE_LIST="
1087 output_example
1088 transcode_aac_example
1089 "
1090
1091 EXTERNAL_LIBRARY_LIST="
1092 avisynth
1093 bzlib
1094 frei0r
1095 gnutls
1096 libcdio
1097 libdc1394
1098 libfaac
1099 libfdk_aac
1100 libfreetype
1101 libgsm
1102 libilbc
1103 libmp3lame
1104 libopencore_amrnb
1105 libopencore_amrwb
1106 libopencv
1107 libopenjpeg
1108 libopus
1109 libpulse
1110 librtmp
1111 libschroedinger
1112 libspeex
1113 libtheora
1114 libvo_aacenc
1115 libvo_amrwbenc
1116 libvorbis
1117 libvpx
1118 libwavpack
1119 libx264
1120 libxavs
1121 libxvid
1122 openssl
1123 x11grab
1124 zlib
1125 "
1126
1127 HWACCEL_LIST="
1128 dxva2
1129 vaapi
1130 vda
1131 vdpau
1132 "
1133 LIBRARY_LIST="
1134 avcodec
1135 avdevice
1136 avfilter
1137 avformat
1138 avresample
1139 avutil
1140 swscale
1141 "
1142
1143 PROGRAM_LIST="
1144 avconv
1145 avplay
1146 avprobe
1147 avserver
1148 "
1149
1150 CONFIG_LIST="
1151 $COMPONENT_LIST
1152 $EXAMPLE_LIST
1153 $EXTERNAL_LIBRARY_LIST
1154 $HWACCEL_LIST
1155 $LIBRARY_LIST
1156 $PROGRAM_LIST
1157 dct
1158 doc
1159 error_resilience
1160 fft
1161 gpl
1162 gray
1163 hardcoded_tables
1164 lsp
1165 lzo
1166 mdct
1167 memalign_hack
1168 network
1169 nonfree
1170 pod2man
1171 pic
1172 rdft
1173 runtime_cpudetect
1174 safe_bitstream_reader
1175 shared
1176 small
1177 sram
1178 static
1179 swscale_alpha
1180 texi2html
1181 thumb
1182 version3
1183 xmm_clobber_test
1184 "
1185
1186 THREADS_LIST='
1187 pthreads
1188 w32threads
1189 '
1190
1191 ATOMICS_LIST='
1192 atomics_gcc
1193 atomics_suncc
1194 atomics_win32
1195 '
1196
1197 ARCH_LIST='
1198 aarch64
1199 alpha
1200 arm
1201 avr32
1202 avr32_ap
1203 avr32_uc
1204 bfin
1205 ia64
1206 m68k
1207 mips
1208 mips64
1209 parisc
1210 ppc
1211 ppc64
1212 s390
1213 sh4
1214 sparc
1215 sparc64
1216 tilegx
1217 tilepro
1218 tomi
1219 x86
1220 x86_32
1221 x86_64
1222 '
1223
1224 ARCH_EXT_LIST_ARM='
1225 armv5te
1226 armv6
1227 armv6t2
1228 neon
1229 vfp
1230 vfpv3
1231 '
1232
1233 ARCH_EXT_LIST_X86='
1234 amd3dnow
1235 amd3dnowext
1236 avx
1237 avx2
1238 fma4
1239 i686
1240 mmx
1241 mmxext
1242 sse
1243 sse2
1244 sse3
1245 sse4
1246 sse42
1247 ssse3
1248 '
1249
1250 ARCH_EXT_LIST="
1251 $ARCH_EXT_LIST_ARM
1252 $ARCH_EXT_LIST_X86
1253 altivec
1254 ppc4xx
1255 vis
1256 "
1257
1258 HAVE_LIST_CMDLINE='
1259 inline_asm
1260 symver
1261 yasm
1262 '
1263
1264 HAVE_LIST_PUB='
1265 bigendian
1266 fast_unaligned
1267 '
1268
1269 MATH_FUNCS="
1270 atanf
1271 atan2f
1272 cbrtf
1273 cosf
1274 exp2
1275 exp2f
1276 expf
1277 isinf
1278 isnan
1279 ldexpf
1280 llrint
1281 llrintf
1282 log2
1283 log2f
1284 log10f
1285 lrint
1286 lrintf
1287 powf
1288 rint
1289 round
1290 roundf
1291 sinf
1292 trunc
1293 truncf
1294 "
1295
1296 HAVE_LIST="
1297 $ARCH_EXT_LIST
1298 $(add_suffix _external $ARCH_EXT_LIST)
1299 $(add_suffix _inline $ARCH_EXT_LIST)
1300 $HAVE_LIST_CMDLINE
1301 $HAVE_LIST_PUB
1302 $THREADS_LIST
1303 $ATOMICS_LIST
1304 $MATH_FUNCS
1305 aligned_malloc
1306 aligned_stack
1307 alsa_asoundlib_h
1308 altivec_h
1309 arpa_inet_h
1310 asm_mod_q
1311 asm_mod_y
1312 atomic_cas_ptr
1313 atomics_native
1314 attribute_may_alias
1315 attribute_packed
1316 cdio_paranoia_h
1317 cdio_paranoia_paranoia_h
1318 closesocket
1319 CommandLineToArgvW
1320 cpunop
1321 CryptGenRandom
1322 dcbzl
1323 dev_bktr_ioctl_bt848_h
1324 dev_bktr_ioctl_meteor_h
1325 dev_ic_bt8xx_h
1326 dev_video_bktr_ioctl_bt848_h
1327 dev_video_meteor_ioctl_meteor_h
1328 direct_h
1329 dlfcn_h
1330 dlopen
1331 dos_paths
1332 dxva_h
1333 ebp_available
1334 ebx_available
1335 fast_64bit
1336 fast_clz
1337 fast_cmov
1338 fcntl
1339 fork
1340 getaddrinfo
1341 gethrtime
1342 getopt
1343 GetProcessAffinityMask
1344 GetProcessMemoryInfo
1345 GetProcessTimes
1346 GetSystemTimeAsFileTime
1347 getrusage
1348 getservbyport
1349 gettimeofday
1350 gnu_as
1351 gsm_h
1352 ibm_asm
1353 inet_aton
1354 io_h
1355 inline_asm_labels
1356 isatty
1357 jack_port_get_latency_range
1358 ldbrx
1359 libc_msvcrt
1360 libdc1394_1
1361 libdc1394_2
1362 local_aligned_16
1363 local_aligned_8
1364 localtime_r
1365 loongson
1366 machine_ioctl_bt848_h
1367 machine_ioctl_meteor_h
1368 machine_rw_barrier
1369 malloc_h
1370 MapViewOfFile
1371 memalign
1372 MemoryBarrier
1373 mkstemp
1374 mm_empty
1375 mmap
1376 mprotect
1377 nanosleep
1378 poll_h
1379 posix_memalign
1380 pragma_deprecated
1381 rdtsc
1382 sched_getaffinity
1383 sdl
1384 SetConsoleTextAttribute
1385 setmode
1386 setrlimit
1387 Sleep
1388 sndio_h
1389 socklen_t
1390 soundcard_h
1391 strerror_r
1392 strptime
1393 strtok_r
1394 struct_addrinfo
1395 struct_group_source_req
1396 struct_ip_mreq_source
1397 struct_ipv6_mreq
1398 struct_pollfd
1399 struct_rusage_ru_maxrss
1400 struct_sockaddr_in6
1401 struct_sockaddr_sa_len
1402 struct_sockaddr_storage
1403 struct_v4l2_frmivalenum_discrete
1404 symver_asm_label
1405 symver_gnu_asm
1406 sync_val_compare_and_swap
1407 sysconf
1408 sysctl
1409 sys_mman_h
1410 sys_param_h
1411 sys_resource_h
1412 sys_select_h
1413 sys_soundcard_h
1414 sys_time_h
1415 sys_un_h
1416 sys_videoio_h
1417 threads
1418 unistd_h
1419 usleep
1420 vdpau_x11
1421 vfp_args
1422 VirtualAlloc
1423 windows_h
1424 winsock2_h
1425 xform_asm
1426 xlib
1427 xmm_clobbers
1428 "
1429
1430 # options emitted with CONFIG_ prefix but not available on the command line
1431 CONFIG_EXTRA="
1432 aandcttables
1433 ac3dsp
1434 audio_frame_queue
1435 dsputil
1436 gcrypt
1437 golomb
1438 gplv3
1439 h263dsp
1440 h264chroma
1441 h264dsp
1442 h264pred
1443 h264qpel
1444 hpeldsp
1445 huffman
1446 lgplv3
1447 lpc
1448 mpegaudio
1449 mpegaudiodsp
1450 mpegvideo
1451 mpegvideoenc
1452 nettle
1453 rangecoder
1454 riffdec
1455 riffenc
1456 rtpdec
1457 rtpenc_chain
1458 sinewin
1459 videodsp
1460 vp3dsp
1461 "
1462
1463 CMDLINE_SELECT="
1464 $ARCH_EXT_LIST
1465 $CONFIG_LIST
1466 $HAVE_LIST_CMDLINE
1467 $THREADS_LIST
1468 asm
1469 cross_compile
1470 debug
1471 extra_warnings
1472 logging
1473 lto
1474 optimizations
1475 "
1476
1477 PATHS_LIST='
1478 bindir
1479 datadir
1480 docdir
1481 incdir
1482 libdir
1483 mandir
1484 prefix
1485 shlibdir
1486 '
1487
1488 CMDLINE_SET="
1489 $PATHS_LIST
1490 ar
1491 arch
1492 as
1493 build_suffix
1494 cc
1495 cpu
1496 cross_prefix
1497 dep_cc
1498 extra_version
1499 host_cc
1500 host_cflags
1501 host_ld
1502 host_ldflags
1503 host_libs
1504 host_os
1505 ld
1506 logfile
1507 malloc_prefix
1508 nm
1509 optflags
1510 pkg_config
1511 random_seed
1512 samples
1513 sysinclude
1514 sysroot
1515 target_exec
1516 target_os
1517 target_path
1518 target_samples
1519 toolchain
1520 "
1521
1522 CMDLINE_APPEND="
1523 extra_cflags
1524 host_cppflags
1525 "
1526
1527 # code dependency declarations
1528
1529 # architecture extensions
1530
1531 armv5te_deps="arm"
1532 armv6_deps="arm"
1533 armv6t2_deps="arm"
1534 neon_deps="arm"
1535 vfp_deps="arm"
1536 vfpv3_deps="vfp"
1537
1538 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1539
1540 altivec_deps="ppc"
1541 ppc4xx_deps="ppc"
1542
1543 vis_deps="sparc"
1544
1545 cpunop_deps="i686"
1546 x86_64_select="i686"
1547 x86_64_suggest="fast_cmov"
1548
1549 amd3dnow_deps="mmx"
1550 amd3dnowext_deps="amd3dnow"
1551 mmx_deps="x86"
1552 mmxext_deps="mmx"
1553 sse_deps="mmxext"
1554 sse2_deps="sse"
1555 sse3_deps="sse2"
1556 ssse3_deps="sse3"
1557 sse4_deps="ssse3"
1558 sse42_deps="sse4"
1559 avx_deps="sse42"
1560 fma4_deps="avx"
1561 avx2_deps="avx"
1562
1563 mmx_external_deps="yasm"
1564 mmx_inline_deps="inline_asm"
1565 mmx_suggest="mmx_external mmx_inline"
1566
1567 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1568 eval dep=\$${ext}_deps
1569 eval ${ext}_external_deps='"${dep}_external"'
1570 eval ${ext}_inline_deps='"${dep}_inline"'
1571 eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1572 done
1573
1574 aligned_stack_if_any="ppc x86"
1575 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1576 fast_clz_if_any="alpha avr32 mips ppc x86"
1577 fast_unaligned_if_any="ppc x86"
1578
1579 need_memalign="altivec neon sse"
1580
1581 # system capabilities
1582 log2_deps="!libc_msvcrt"
1583
1584 symver_if_any="symver_asm_label symver_gnu_asm"
1585
1586 # subsystems
1587 dct_select="rdft"
1588 error_resilience_select="dsputil"
1589 lpc_select="dsputil"
1590 mdct_select="fft"
1591 rdft_select="fft"
1592 mpegaudio_select="mpegaudiodsp"
1593 mpegaudiodsp_select="dct"
1594 mpegvideo_select="dsputil hpeldsp videodsp"
1595 mpegvideoenc_select="mpegvideo"
1596
1597 # decoders / encoders
1598 aac_decoder_select="mdct sinewin"
1599 aac_encoder_select="audio_frame_queue mdct sinewin"
1600 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1601 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1602 ac3_encoder_select="mdct ac3dsp dsputil"
1603 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1604 aic_decoder_select="dsputil golomb"
1605 alac_encoder_select="lpc"
1606 als_decoder_select="dsputil"
1607 amrnb_decoder_select="lsp"
1608 amrwb_decoder_select="lsp"
1609 amv_decoder_select="dsputil hpeldsp"
1610 ape_decoder_select="dsputil"
1611 asv1_decoder_select="dsputil"
1612 asv1_encoder_select="dsputil"
1613 asv2_decoder_select="dsputil"
1614 asv2_encoder_select="dsputil"
1615 atrac1_decoder_select="mdct sinewin"
1616 atrac3_decoder_select="mdct"
1617 bink_decoder_select="dsputil hpeldsp"
1618 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1619 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1620 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1621 cllc_decoder_select="dsputil"
1622 comfortnoise_encoder_select="lpc"
1623 cook_decoder_select="dsputil mdct sinewin"
1624 cscd_decoder_select="lzo"
1625 cscd_decoder_suggest="zlib"
1626 dca_decoder_select="mdct"
1627 dnxhd_decoder_select="dsputil"
1628 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1629 dvvideo_decoder_select="dsputil"
1630 dvvideo_encoder_select="dsputil"
1631 dxa_decoder_deps="zlib"
1632 eac3_decoder_select="ac3_decoder"
1633 eac3_encoder_select="ac3_encoder"
1634 eamad_decoder_select="aandcttables dsputil mpegvideo"
1635 eatgq_decoder_select="aandcttables dsputil"
1636 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1637 ffv1_decoder_select="dsputil golomb rangecoder"
1638 ffv1_encoder_select="dsputil rangecoder"
1639 ffvhuff_decoder_select="dsputil"
1640 ffvhuff_encoder_select="dsputil huffman"
1641 flac_decoder_select="golomb"
1642 flac_encoder_select="dsputil golomb lpc"
1643 flashsv_decoder_deps="zlib"
1644 flashsv_encoder_deps="zlib"
1645 flashsv2_decoder_deps="zlib"
1646 flv_decoder_select="h263_decoder"
1647 flv_encoder_select="h263_encoder"
1648 fourxm_decoder_select="dsputil"
1649 fraps_decoder_select="dsputil huffman"
1650 g2m_decoder_deps="zlib"
1651 g2m_decoder_select="dsputil"
1652 h261_decoder_select="error_resilience mpegvideo"
1653 h261_encoder_select="aandcttables mpegvideoenc"
1654 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1655 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1656 h263i_decoder_select="h263_decoder"
1657 h263p_encoder_select="h263_encoder"
1658 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1659 h264_decoder_suggest="error_resilience"
1660 hevc_decoder_select="dsputil golomb videodsp"
1661 huffyuv_decoder_select="dsputil"
1662 huffyuv_encoder_select="dsputil huffman"
1663 iac_decoder_select="dsputil fft mdct sinewin"
1664 imc_decoder_select="dsputil fft mdct sinewin"
1665 indeo3_decoder_select="hpeldsp"
1666 interplay_video_decoder_select="hpeldsp"
1667 jpegls_decoder_select="dsputil golomb hpeldsp"
1668 jpegls_encoder_select="golomb"
1669 jv_decoder_select="dsputil"
1670 lagarith_decoder_select="dsputil"
1671 ljpeg_encoder_select="aandcttables mpegvideoenc"
1672 loco_decoder_select="golomb"
1673 mdec_decoder_select="dsputil error_resilience mpegvideo"
1674 metasound_decoder_select="lsp mdct sinewin"
1675 mimic_decoder_select="dsputil hpeldsp"
1676 mjpeg_decoder_select="dsputil hpeldsp"
1677 mjpegb_decoder_select="dsputil hpeldsp"
1678 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1679 mlp_decoder_select="dsputil mlp_parser"
1680 motionpixels_decoder_select="dsputil"
1681 mp1_decoder_select="mpegaudio"
1682 mp1float_decoder_select="mpegaudio"
1683 mp2_decoder_select="mpegaudio"
1684 mp2float_decoder_select="mpegaudio"
1685 mp3_decoder_select="mpegaudio"
1686 mp3adu_decoder_select="mpegaudio"
1687 mp3adufloat_decoder_select="mpegaudio"
1688 mp3float_decoder_select="mpegaudio"
1689 mp3on4_decoder_select="mpegaudio"
1690 mp3on4float_decoder_select="mpegaudio"
1691 mpc7_decoder_select="dsputil mpegaudiodsp"
1692 mpc8_decoder_select="dsputil mpegaudiodsp"
1693 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1694 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1695 mpeg1video_decoder_select="error_resilience mpegvideo"
1696 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1697 mpeg2video_decoder_select="error_resilience mpegvideo"
1698 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1699 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1700 mpeg4_encoder_select="h263_encoder"
1701 msmpeg4v1_decoder_select="h263_decoder"
1702 msmpeg4v2_decoder_select="h263_decoder"
1703 msmpeg4v2_encoder_select="h263_encoder"
1704 msmpeg4v3_decoder_select="h263_decoder"
1705 msmpeg4v3_encoder_select="h263_encoder"
1706 mss2_decoder_select="error_resilience vc1_decoder"
1707 mxpeg_decoder_select="dsputil hpeldsp"
1708 nellymoser_decoder_select="mdct sinewin"
1709 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1710 nuv_decoder_select="dsputil lzo"
1711 png_decoder_deps="zlib"
1712 png_decoder_select="dsputil"
1713 png_encoder_deps="zlib"
1714 png_encoder_select="dsputil"
1715 prores_decoder_select="dsputil"
1716 prores_encoder_select="dsputil"
1717 qcelp_decoder_select="lsp"
1718 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1719 ra_144_encoder_select="audio_frame_queue lpc"
1720 ralf_decoder_select="golomb"
1721 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1722 rv10_encoder_select="h263_encoder"
1723 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1724 rv20_encoder_select="h263_encoder"
1725 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1726 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1727 shorten_decoder_select="golomb"
1728 sipr_decoder_select="lsp"
1729 sp5x_decoder_select="dsputil hpeldsp"
1730 svq1_decoder_select="hpeldsp"
1731 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1732 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1733 svq3_decoder_suggest="error_resilience zlib"
1734 tak_decoder_select="dsputil"
1735 theora_decoder_select="vp3_decoder"
1736 tiff_decoder_suggest="zlib"
1737 tiff_encoder_suggest="zlib"
1738 thp_decoder_select="dsputil hpeldsp"
1739 truehd_decoder_select="mlp_decoder"
1740 truemotion2_decoder_select="dsputil"
1741 truespeech_decoder_select="dsputil"
1742 tscc_decoder_deps="zlib"
1743 twinvq_decoder_select="mdct lsp sinewin"
1744 utvideo_decoder_select="dsputil"
1745 utvideo_encoder_select="dsputil huffman"
1746 vble_decoder_select="dsputil"
1747 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1748 vc1image_decoder_select="vc1_decoder"
1749 vorbis_decoder_select="mdct"
1750 vorbis_encoder_select="mdct"
1751 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1752 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1753 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1754 vp6a_decoder_select="vp6_decoder"
1755 vp6f_decoder_select="vp6_decoder"
1756 vp8_decoder_select="h264pred videodsp"
1757 vp9_decoder_select="videodsp"
1758 webp_decoder_select="vp8_decoder"
1759 wmapro_decoder_select="mdct sinewin"
1760 wmav1_decoder_select="mdct sinewin"
1761 wmav1_encoder_select="mdct sinewin"
1762 wmav2_decoder_select="mdct sinewin"
1763 wmav2_encoder_select="mdct sinewin"
1764 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1765 wmv1_decoder_select="h263_decoder"
1766 wmv1_encoder_select="h263_encoder"
1767 wmv2_decoder_select="h263_decoder videodsp"
1768 wmv2_encoder_select="h263_encoder"
1769 wmv3_decoder_select="vc1_decoder"
1770 wmv3image_decoder_select="wmv3_decoder"
1771 zerocodec_decoder_deps="zlib"
1772 zlib_decoder_deps="zlib"
1773 zlib_encoder_deps="zlib"
1774 zmbv_decoder_deps="zlib"
1775 zmbv_encoder_deps="zlib"
1776
1777 # hardware accelerators
1778 dxva2_deps="dxva2api_h"
1779 vaapi_deps="va_va_h"
1780 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1781 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1782 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1783
1784 h263_vaapi_hwaccel_deps="vaapi"
1785 h263_vaapi_hwaccel_select="h263_decoder"
1786 h263_vdpau_hwaccel_deps="vdpau"
1787 h263_vdpau_hwaccel_select="h263_decoder"
1788 h264_dxva2_hwaccel_deps="dxva2"
1789 h264_dxva2_hwaccel_select="h264_decoder"
1790 h264_vaapi_hwaccel_deps="vaapi"
1791 h264_vaapi_hwaccel_select="h264_decoder"
1792 h264_vda_hwaccel_deps="vda"
1793 h264_vda_hwaccel_select="h264_decoder"
1794 h264_vdpau_hwaccel_deps="vdpau"
1795 h264_vdpau_hwaccel_select="h264_decoder"
1796 mpeg1_vdpau_hwaccel_deps="vdpau"
1797 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1798 mpeg2_dxva2_hwaccel_deps="dxva2"
1799 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1800 mpeg2_vaapi_hwaccel_deps="vaapi"
1801 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1802 mpeg2_vdpau_hwaccel_deps="vdpau"
1803 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1804 mpeg4_vaapi_hwaccel_deps="vaapi"
1805 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1806 mpeg4_vdpau_hwaccel_deps="vdpau"
1807 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1808 vc1_dxva2_hwaccel_deps="dxva2"
1809 vc1_dxva2_hwaccel_select="vc1_decoder"
1810 vc1_vaapi_hwaccel_deps="vaapi"
1811 vc1_vaapi_hwaccel_select="vc1_decoder"
1812 vc1_vdpau_hwaccel_deps="vdpau"
1813 vc1_vdpau_hwaccel_select="vc1_decoder"
1814 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1815 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1816 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1817
1818 # parsers
1819 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1820 mpeg4video_parser_select="error_resilience mpegvideo"
1821 mpegvideo_parser_select="error_resilience mpegvideo"
1822 vc1_parser_select="mpegvideo"
1823
1824 # external libraries
1825 libfaac_encoder_deps="libfaac"
1826 libfaac_encoder_select="audio_frame_queue"
1827 libfdk_aac_decoder_deps="libfdk_aac"
1828 libfdk_aac_encoder_deps="libfdk_aac"
1829 libfdk_aac_encoder_select="audio_frame_queue"
1830 libgsm_decoder_deps="libgsm"
1831 libgsm_encoder_deps="libgsm"
1832 libgsm_ms_decoder_deps="libgsm"
1833 libgsm_ms_encoder_deps="libgsm"
1834 libilbc_decoder_deps="libilbc"
1835 libilbc_encoder_deps="libilbc"
1836 libmp3lame_encoder_deps="libmp3lame"
1837 libmp3lame_encoder_select="audio_frame_queue"
1838 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1839 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1840 libopencore_amrnb_encoder_select="audio_frame_queue"
1841 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1842 libopenjpeg_decoder_deps="libopenjpeg"
1843 libopenjpeg_encoder_deps="libopenjpeg"
1844 libopus_decoder_deps="libopus"
1845 libopus_encoder_deps="libopus"
1846 libopus_encoder_select="audio_frame_queue"
1847 libschroedinger_decoder_deps="libschroedinger"
1848 libschroedinger_encoder_deps="libschroedinger"
1849 libspeex_decoder_deps="libspeex"
1850 libspeex_encoder_deps="libspeex"
1851 libspeex_encoder_select="audio_frame_queue"
1852 libtheora_encoder_deps="libtheora"
1853 libvo_aacenc_encoder_deps="libvo_aacenc"
1854 libvo_aacenc_encoder_select="audio_frame_queue"
1855 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1856 libvorbis_encoder_deps="libvorbis"
1857 libvorbis_encoder_select="audio_frame_queue"
1858 libvpx_vp8_decoder_deps="libvpx"
1859 libvpx_vp8_encoder_deps="libvpx"
1860 libvpx_vp9_decoder_deps="libvpx"
1861 libvpx_vp9_encoder_deps="libvpx"
1862 libwavpack_encoder_deps="libwavpack"
1863 libx264_encoder_deps="libx264"
1864 libxavs_encoder_deps="libxavs"
1865 libxvid_encoder_deps="libxvid"
1866
1867 # demuxers / muxers
1868 ac3_demuxer_select="ac3_parser"
1869 asf_demuxer_select="riffdec"
1870 asf_muxer_select="riffenc"
1871 asf_stream_muxer_select="asf_muxer"
1872 avi_demuxer_select="riffdec"
1873 avi_muxer_select="riffenc"
1874 avisynth_demuxer_deps="avisynth"
1875 avisynth_demuxer_select="riffdec"
1876 caf_demuxer_select="riffdec"
1877 dirac_demuxer_select="dirac_parser"
1878 dxa_demuxer_select="riffdec"
1879 eac3_demuxer_select="ac3_parser"
1880 f4v_muxer_select="mov_muxer"
1881 flac_demuxer_select="flac_parser"
1882 hds_muxer_select="flv_muxer"
1883 hls_muxer_select="mpegts_muxer"
1884 ipod_muxer_select="mov_muxer"
1885 ismv_muxer_select="mov_muxer"
1886 matroska_audio_muxer_select="matroska_muxer"
1887 matroska_demuxer_select="riffdec"
1888 matroska_demuxer_suggest="bzlib lzo zlib"
1889 matroska_muxer_select="riffenc"
1890 mmf_muxer_select="riffenc"
1891 mov_demuxer_select="riffdec"
1892 mov_demuxer_suggest="zlib"
1893 mov_muxer_select="riffenc rtpenc_chain"
1894 mp3_demuxer_select="mpegaudio_parser"
1895 mp4_muxer_select="mov_muxer"
1896 mpegts_muxer_select="adts_muxer latm_muxer"
1897 mpegtsraw_demuxer_select="mpegts_demuxer"
1898 mxf_d10_muxer_select="mxf_muxer"
1899 nut_muxer_select="riffenc"
1900 nuv_demuxer_select="riffdec"
1901 ogg_demuxer_select="golomb"
1902 psp_muxer_select="mov_muxer"
1903 rtp_demuxer_select="sdp_demuxer"
1904 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1905 rtsp_demuxer_select="http_protocol rtpdec"
1906 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1907 sap_demuxer_select="sdp_demuxer"
1908 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1909 sdp_demuxer_select="rtpdec"
1910 smoothstreaming_muxer_select="ismv_muxer"
1911 spdif_muxer_select="aac_parser"
1912 tak_demuxer_select="tak_parser"
1913 tg2_muxer_select="mov_muxer"
1914 tgp_muxer_select="mov_muxer"
1915 w64_demuxer_select="wav_demuxer"
1916 wav_demuxer_select="riffdec"
1917 wav_muxer_select="riffenc"
1918 webm_muxer_select="riffenc"
1919 wtv_demuxer_select="riffdec"
1920 xmv_demuxer_select="riffdec"
1921 xwma_demuxer_select="riffdec"
1922
1923 # indevs / outdevs
1924 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1925 alsa_outdev_deps="alsa_asoundlib_h"
1926 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1927 dv1394_indev_deps="dv1394"
1928 dv1394_indev_select="dv_demuxer"
1929 fbdev_indev_deps="linux_fb_h"
1930 jack_indev_deps="jack_jack_h pthreads"
1931 libcdio_indev_deps="libcdio"
1932 libdc1394_indev_deps="libdc1394"
1933 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1934 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1935 pulse_indev_deps="libpulse"
1936 sndio_indev_deps="sndio_h"
1937 sndio_outdev_deps="sndio_h"
1938 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1939 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1940 vfwcap_indev_extralibs="-lavicap32"
1941 x11grab_indev_deps="x11grab XShmCreateImage"
1942
1943 # protocols
1944 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1945 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1946 ffrtmpcrypt_protocol_select="tcp_protocol"
1947 ffrtmphttp_protocol_deps="!librtmp_protocol"
1948 ffrtmphttp_protocol_select="http_protocol"
1949 gopher_protocol_select="network"
1950 httpproxy_protocol_select="tcp_protocol"
1951 http_protocol_select="tcp_protocol"
1952 https_protocol_select="tls_protocol"
1953 librtmp_protocol_deps="librtmp"
1954 librtmpe_protocol_deps="librtmp"
1955 librtmps_protocol_deps="librtmp"
1956 librtmpt_protocol_deps="librtmp"
1957 librtmpte_protocol_deps="librtmp"
1958 mmsh_protocol_select="http_protocol"
1959 mmst_protocol_select="network"
1960 rtmp_protocol_deps="!librtmp_protocol"
1961 rtmp_protocol_select="tcp_protocol"
1962 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1963 rtmps_protocol_deps="!librtmp_protocol"
1964 rtmps_protocol_select="tls_protocol"
1965 rtmpt_protocol_select="ffrtmphttp_protocol"
1966 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1967 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1968 rtp_protocol_select="udp_protocol"
1969 sctp_protocol_deps="struct_sctp_event_subscribe"
1970 sctp_protocol_select="network"
1971 srtp_protocol_select="rtp_protocol"
1972 tcp_protocol_select="network"
1973 tls_protocol_deps_any="openssl gnutls"
1974 tls_protocol_select="tcp_protocol"
1975 udp_protocol_select="network"
1976 unix_protocol_deps="sys_un_h"
1977 unix_protocol_select="network"
1978
1979 # filters
1980 blackframe_filter_deps="gpl"
1981 boxblur_filter_deps="gpl"
1982 cropdetect_filter_deps="gpl"
1983 delogo_filter_deps="gpl"
1984 drawtext_filter_deps="libfreetype"
1985 frei0r_filter_deps="frei0r dlopen strtok_r"
1986 frei0r_filter_extralibs='$ldl'
1987 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1988 frei0r_src_filter_extralibs='$ldl'
1989 hqdn3d_filter_deps="gpl"
1990 interlace_filter_deps="gpl"
1991 resample_filter_deps="avresample"
1992 ocv_filter_deps="libopencv"
1993 scale_filter_deps="swscale"
1994 yadif_filter_deps="gpl"
1995
1996 # examples
1997 output_example_deps="avcodec avformat avutil swscale"
1998 transcode_aac_example_deps="avcodec avformat avresample"
1999
2000 # libraries
2001 avcodec_deps="avutil"
2002 avdevice_deps="avutil avcodec avformat"
2003 avfilter_deps="avutil"
2004 avformat_deps="avutil avcodec"
2005 avresample_deps="avutil"
2006 swscale_deps="avutil"
2007
2008 # programs
2009 avconv_deps="avcodec avfilter avformat avresample swscale"
2010 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2011 fps_filter null_filter resample_filter scale_filter
2012 setpts_filter trim_filter"
2013 avplay_deps="avcodec avformat avresample swscale sdl"
2014 avplay_select="rdft"
2015 avprobe_deps="avcodec avformat"
2016 avserver_deps="avformat fork !shared"
2017 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2018 avserver_extralibs='$ldl'
2019
2020 # documentation
2021 pod2man_deps="doc"
2022 texi2html_deps="doc"
2023
2024 # default parameters
2025
2026 logfile="config.log"
2027
2028 # installation paths
2029 prefix_default="/usr/local"
2030 bindir_default='${prefix}/bin'
2031 datadir_default='${prefix}/share/avconv'
2032 docdir_default='${prefix}/share/doc/libav'
2033 incdir_default='${prefix}/include'
2034 libdir_default='${prefix}/lib'
2035 mandir_default='${prefix}/share/man'
2036 shlibdir_default="$libdir_default"
2037
2038 # toolchain
2039 ar_default="ar"
2040 cc_default="gcc"
2041 host_cc_default="gcc"
2042 cp_f="cp -f"
2043 ln_s="ln -s -f"
2044 nm_default="nm -g"
2045 objformat="elf"
2046 pkg_config_default=pkg-config
2047 ranlib="ranlib"
2048 strip="strip"
2049 yasmexe="yasm"
2050
2051 nogas=":"
2052
2053 # machine
2054 arch_default=$(uname -m)
2055 cpu="generic"
2056
2057 # OS
2058 target_os_default=$(tolower $(uname -s))
2059 host_os=$target_os_default
2060
2061 # configurable options
2062 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2063
2064 enable asm
2065 enable debug
2066 enable doc
2067 enable optimizations
2068 enable safe_bitstream_reader
2069 enable static
2070 enable swscale_alpha
2071
2072 # By default, enable only those hwaccels that have no external dependencies.
2073 enable dxva2 vdpau
2074
2075 # build settings
2076 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2077 LIBPREF="lib"
2078 LIBSUF=".a"
2079 FULLNAME='$(NAME)$(BUILDSUF)'
2080 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2081 SLIBPREF="lib"
2082 SLIBSUF=".so"
2083 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2084 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2085 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2086 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2087 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2088 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2089
2090 asflags_filter=echo
2091 cflags_filter=echo
2092 ldflags_filter=echo
2093
2094 AS_C='-c'
2095 AS_O='-o $@'
2096 CC_C='-c'
2097 CC_E='-E -o $@'
2098 CC_O='-o $@'
2099 LD_O='-o $@'
2100 LD_LIB='-l%'
2101 LD_PATH='-L'
2102 HOSTCC_C='-c'
2103 HOSTCC_E='-E -o $@'
2104 HOSTCC_O='-o $@'
2105 HOSTLD_O='-o $@'
2106
2107 host_cflags='-O3 -g'
2108 host_cppflags='-D_ISOC99_SOURCE'
2109 host_libs='-lm'
2110 host_cflags_filter=echo
2111 host_ldflags_filter=echo
2112
2113 target_path='$(CURDIR)'
2114
2115 # since the object filename is not given with the -MM flag, the compiler
2116 # is only able to print the basename, and we must add the path ourselves
2117 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2118 DEPFLAGS='-MM'
2119
2120 # find source path
2121 if test -f configure; then
2122 source_path=.
2123 else
2124 source_path=$(cd $(dirname "$0"); pwd)
2125 echo "$source_path" | grep -q '[[:blank:]]' &&
2126 die "Out of tree builds are impossible with whitespace in source path."
2127 test -e "$source_path/config.h" &&
2128 die "Out of tree builds are impossible with config.h in source dir."
2129 fi
2130
2131 for v in "$@"; do
2132 r=${v#*=}
2133 l=${v%"$r"}
2134 r=$(sh_quote "$r")
2135 LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2136 done
2137
2138 find_things(){
2139 thing=$1
2140 pattern=$2
2141 file=$source_path/$3
2142 sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2143 }
2144
2145 ENCODER_LIST=$(find_things encoder ENC libavcodec/allcodecs.c)
2146 DECODER_LIST=$(find_things decoder DEC libavcodec/allcodecs.c)
2147 HWACCEL_LIST=$(find_things hwaccel HWACCEL libavcodec/allcodecs.c)
2148 PARSER_LIST=$(find_things parser PARSER libavcodec/allcodecs.c)
2149 BSF_LIST=$(find_things bsf BSF libavcodec/allcodecs.c)
2150 MUXER_LIST=$(find_things muxer _MUX libavformat/allformats.c)
2151 DEMUXER_LIST=$(find_things demuxer DEMUX libavformat/allformats.c)
2152 OUTDEV_LIST=$(find_things outdev OUTDEV libavdevice/alldevices.c)
2153 INDEV_LIST=$(find_things indev _IN libavdevice/alldevices.c)
2154 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2155 FILTER_LIST=$(find_things filter FILTER libavfilter/allfilters.c)
2156
2157 ALL_COMPONENTS="
2158 $BSF_LIST
2159 $DECODER_LIST
2160 $DEMUXER_LIST
2161 $ENCODER_LIST
2162 $FILTER_LIST
2163 $HWACCEL_LIST
2164 $INDEV_LIST
2165 $MUXER_LIST
2166 $OUTDEV_LIST
2167 $PARSER_LIST
2168 $PROTOCOL_LIST
2169 "
2170
2171 for n in $COMPONENT_LIST; do
2172 v=$(toupper ${n%s})_LIST
2173 eval enable \$$v
2174 eval ${n}_if_any="\$$v"
2175 done
2176
2177 enable $ARCH_EXT_LIST
2178
2179 die_unknown(){
2180 echo "Unknown option \"$1\"."
2181 echo "See $0 --help for available options."
2182 exit 1
2183 }
2184
2185 print_3_columns() {
2186 cat | tr ' ' '\n' | sort | pr -r -3 -t
2187 }
2188
2189 show_list() {
2190 suffix=_$1
2191 shift
2192 echo $* | sed s/$suffix//g | print_3_columns
2193 exit 0
2194 }
2195
2196 rand_list(){
2197 IFS=', '
2198 set -- $*
2199 unset IFS
2200 for thing; do
2201 comp=${thing%:*}
2202 prob=${thing#$comp}
2203 prob=${prob#:}
2204 is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2205 echo "prob ${prob:-0.5}"
2206 printf '%s\n' $comp
2207 done
2208 }
2209
2210 do_random(){
2211 action=$1
2212 shift
2213 random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2214 $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2215 }
2216
2217 for opt do
2218 optval="${opt#*=}"
2219 case "$opt" in
2220 --extra-ldflags=*)
2221 add_ldflags $optval
2222 ;;
2223 --extra-libs=*)
2224 add_extralibs $optval
2225 ;;
2226 --disable-devices)
2227 disable $INDEV_LIST $OUTDEV_LIST
2228 ;;
2229 --enable-debug=*)
2230 debuglevel="$optval"
2231 ;;
2232 --disable-programs)
2233 disable $PROGRAM_LIST
2234 ;;
2235 --disable-everything)
2236 map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2237 ;;
2238 --disable-all)
2239 map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2240 disable $LIBRARY_LIST $PROGRAM_LIST doc
2241 ;;
2242 --enable-random|--disable-random)
2243 action=${opt%%-random}
2244 do_random ${action#--} $COMPONENT_LIST
2245 ;;
2246 --enable-random=*|--disable-random=*)
2247 action=${opt%%-random=*}
2248 do_random ${action#--} $optval
2249 ;;
2250 --enable-*=*|--disable-*=*)
2251 eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2252 is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2253 eval list=\$$(toupper $thing)_LIST
2254 name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2255 $action $(filter "$name" $list)
2256 ;;
2257 --enable-?*|--disable-?*)
2258 eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2259 if is_in $option $COMPONENT_LIST; then
2260 test $action = disable && action=unset
2261 eval $action \$$(toupper ${option%s})_LIST
2262 elif is_in $option $CMDLINE_SELECT; then
2263 $action $option
2264 else
2265 die_unknown $opt
2266 fi
2267 ;;
2268 --list-*)
2269 NAME="${opt#--list-}"
2270 is_in $NAME $COMPONENT_LIST || die_unknown $opt
2271 NAME=${NAME%s}
2272 eval show_list $NAME \$$(toupper $NAME)_LIST
2273 ;;
2274 --help|-h) show_help
2275 ;;
2276 *)
2277 optname="${opt%%=*}"
2278 optname="${optname#--}"
2279 optname=$(echo "$optname" | sed 's/-/_/g')
2280 if is_in $optname $CMDLINE_SET; then
2281 eval $optname='$optval'
2282 elif is_in $optname $CMDLINE_APPEND; then
2283 append $optname "$optval"
2284 else
2285 die_unknown $opt
2286 fi
2287 ;;
2288 esac
2289 done
2290
2291 disabled logging && logfile=/dev/null
2292
2293 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2294 set >> $logfile
2295
2296 test -n "$cross_prefix" && enable cross_compile
2297
2298 if enabled cross_compile; then
2299 test -n "$arch" && test -n "$target_os" ||
2300 die "Must specify target arch and OS when cross-compiling"
2301 fi
2302
2303 ar_default="${cross_prefix}${ar_default}"
2304 cc_default="${cross_prefix}${cc_default}"
2305 nm_default="${cross_prefix}${nm_default}"
2306 pkg_config_default="${cross_prefix}${pkg_config_default}"
2307 ranlib="${cross_prefix}${ranlib}"
2308 strip="${cross_prefix}${strip}"
2309
2310 sysinclude_default="${sysroot}/usr/include"
2311
2312 case "$toolchain" in
2313 clang-asan)
2314 cc_default="clang"
2315 add_cflags -fsanitize=address
2316 add_ldflags -fsanitize=address
2317 ;;
2318 clang-tsan)
2319 cc_default="clang"
2320 add_cflags -fsanitize=thread -pie
2321 add_ldflags -fsanitize=thread -pie
2322 ;;
2323 gcc-asan)
2324 cc_default="gcc"
2325 add_cflags -fsanitize=address
2326 add_ldflags -fsanitize=address
2327 ;;
2328 gcc-tsan)
2329 cc_default="gcc"
2330 add_cflags -fsanitize=thread -pie -fPIC
2331 add_ldflags -fsanitize=thread -pie -fPIC
2332 ;;
2333 valgrind-massif)
2334 target_exec_default="valgrind"
2335 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2336 ;;
2337 valgrind-memcheck)
2338 target_exec_default="valgrind"
2339 target_exec_args="--track-origins=yes --leak-check=full"
2340 ;;
2341 msvc)
2342 # Check whether the current MSVC version needs the C99 converter.
2343 # From MSVC 2013 (compiler major version 18) onwards, it does actually
2344 # support enough of C99 to build libav. Default to the new
2345 # behaviour if the regexp was unable to match anything, since this
2346 # successfully parses the version number of existing supported
2347 # versions that require the converter (MSVC 2010 and 2012).
2348 cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2349 if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2350 cc_default="cl"
2351 else
2352 cc_default="c99wrap cl"
2353 fi
2354 ld_default="link"
2355 nm_default="dumpbin -symbols"
2356 ar_default="lib"
2357 target_os_default="win32"
2358 # Use a relative path for TMPDIR. This makes sure all the
2359 # ffconf temp files are written with a relative path, avoiding
2360 # issues with msys/win32 path conversion for MSVC parameters
2361 # such as -Fo<file> or -out:<file>.
2362 TMPDIR=.
2363 ;;
2364 icl)
2365 cc_default="icl"
2366 ld_default="xilink"
2367 nm_default="dumpbin -symbols"
2368 ar_default="xilib"
2369 target_os_default="win32"
2370 TMPDIR=.
2371 ;;
2372 gcov)
2373 add_cflags -fprofile-arcs -ftest-coverage
2374 add_ldflags -fprofile-arcs -ftest-coverage
2375 ;;
2376 hardened)
2377 add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2378 add_ldflags -Wl,-z,relro -Wl,-z,now
2379 ;;
2380 ?*)
2381 die "Unknown toolchain $toolchain"
2382 ;;
2383 esac
2384
2385 set_default arch cc pkg_config sysinclude target_exec target_os
2386 enabled cross_compile || host_cc_default=$cc
2387 set_default host_cc
2388
2389 if ! $pkg_config --version >/dev/null 2>&1; then
2390 warn "$pkg_config not found, library detection may fail."
2391 pkg_config=false
2392 fi
2393
2394 exesuf() {
2395 case $1 in
2396 mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2397 esac
2398 }
2399
2400 EXESUF=$(exesuf $target_os)
2401 HOSTEXESUF=$(exesuf $host_os)
2402
2403 # set temporary file name
2404 : ${TMPDIR:=$TEMPDIR}
2405 : ${TMPDIR:=$TMP}
2406 : ${TMPDIR:=/tmp}
2407
2408 if ! check_cmd mktemp -u XXXXXX; then
2409 # simple replacement for missing mktemp
2410 # NOT SAFE FOR GENERAL USE
2411 mktemp(){
2412 echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2413 }
2414 fi
2415
2416 tmpfile(){
2417 tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2418 (set -C; exec > $tmp) 2>/dev/null ||
2419 die "Unable to create temporary file in $TMPDIR."
2420 append TMPFILES $tmp
2421 eval $1=$tmp
2422 }
2423
2424 trap 'rm -f -- $TMPFILES' EXIT
2425
2426 tmpfile TMPASM .asm
2427 tmpfile TMPC .c
2428 tmpfile TMPE $EXESUF
2429 tmpfile TMPH .h
2430 tmpfile TMPO .o
2431 tmpfile TMPS .S
2432 tmpfile TMPSH .sh
2433 tmpfile TMPV .ver
2434
2435 unset -f mktemp
2436
2437 chmod +x $TMPE
2438
2439 # make sure we can execute files in $TMPDIR
2440 cat > $TMPSH 2>> $logfile <<EOF
2441 #! /bin/sh
2442 EOF
2443 chmod +x $TMPSH >> $logfile 2>&1
2444 if ! $TMPSH >> $logfile 2>&1; then
2445 cat <<EOF
2446 Unable to create and execute files in $TMPDIR. Set the TMPDIR environment
2447 variable to another directory and make sure that it is not mounted noexec.
2448 EOF
2449 die "Sanity test failed."
2450 fi
2451
2452 ccc_flags(){
2453 for flag; do
2454 case $flag in
2455 -std=c99) echo -c99 ;;
2456 -mcpu=*) echo -arch ${flag#*=} ;;
2457 -mieee) echo -ieee ;;
2458 -O*|-fast) echo $flag ;;
2459 -fno-math-errno) echo -assume nomath_errno ;;
2460 -g) echo -g3 ;;
2461 -Wall) echo -msg_enable level2 ;;
2462 -Wno-pointer-sign) echo -msg_disable ptrmismatch1 ;;
2463 -Wl,*) echo $flag ;;
2464 -f*|-W*) ;;
2465 *) echo $flag ;;
2466 esac
2467 done
2468 }
2469
2470 cparser_flags(){
2471 for flag; do
2472 case $flag in
2473 -Wno-switch) echo -Wno-switch-enum ;;
2474 -Wno-format-zero-length) ;;
2475 -Wdisabled-optimization) ;;
2476 -Wno-pointer-sign) echo -Wno-other ;;
2477 *) echo $flag ;;
2478 esac
2479 done
2480 }
2481
2482 msvc_common_flags(){
2483 for flag; do
2484 case $flag in
2485 # In addition to specifying certain flags under the compiler
2486 # specific filters, they must be specified here as well or else the
2487 # generic catch all at the bottom will print the original flag.
2488 -Wall) ;;
2489 -std=c99) ;;
2490 # Common flags
2491 -fomit-frame-pointer) ;;
2492 -g) echo -Z7 ;;
2493 -fno-math-errno) ;;
2494 -fno-common) ;;
2495 -fno-signed-zeros) ;;
2496 -fPIC) ;;
2497 -mthumb) ;;
2498 -march=*) ;;
2499 -lz) echo zlib.lib ;;
2500 -lavifil32) echo vfw32.lib ;;
2501 -lavicap32) echo vfw32.lib user32.lib ;;
2502 -l*) echo ${flag#-l}.lib ;;
2503 *) echo $flag ;;
2504 esac
2505 done
2506 }
2507
2508 msvc_flags(){
2509 msvc_common_flags "$@"
2510 for flag; do
2511 case $flag in
2512 -Wall) echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2513 -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2514 -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2515 -wd4273 ;;
2516 esac
2517 done
2518 }
2519
2520 icl_flags(){
2521 msvc_common_flags "$@"
2522 for flag; do
2523 case $flag in
2524 # Despite what Intel's documentation says -Wall, which is supported
2525 # on Windows, does enable remarks so disable them here.
2526 -Wall) echo $flag -Qdiag-disable:remark ;;
2527 -std=c99) echo -Qstd=c99 ;;
2528 esac
2529 done
2530 }
2531
2532 pgi_flags(){
2533 for flag; do
2534 case $flag in
2535 -flto) echo -Mipa=fast,libopt,libinline,vestigial ;;
2536 -fomit-frame-pointer) echo -Mnoframe ;;
2537 -g) echo -gopt ;;
2538 *) echo $flag ;;
2539 esac
2540 done
2541 }
2542
2543 suncc_flags(){
2544 for flag; do
2545 case $flag in
2546 -march=*|-mcpu=*)
2547 case "${flag#*=}" in
2548 native) echo -xtarget=native ;;
2549 v9|niagara) echo -xarch=sparc ;;
2550 ultrasparc) echo -xarch=sparcvis ;;
2551 ultrasparc3|niagara2) echo -xarch=sparcvis2 ;;
2552 i586|pentium) echo -xchip=pentium ;;
2553 i686|pentiumpro|pentium2) echo -xtarget=pentium_pro ;;
2554 pentium3*|c3-2) echo -xtarget=pentium3 ;;
2555 pentium-m) echo -xarch=sse2 -xchip=pentium3 ;;
2556 pentium4*) echo -xtarget=pentium4 ;;
2557 prescott|nocona) echo -xarch=sse3 -xchip=pentium4 ;;
2558 *-sse3) echo -xarch=sse3 ;;
2559 core2) echo -xarch=ssse3 -xchip=core2 ;;
2560 corei7) echo -xarch=sse4_2 -xchip=nehalem ;;
2561 corei7-avx) echo -xarch=avx -xchip=sandybridge ;;
2562 amdfam10|barcelona|bdver*) echo -xarch=sse4_1 ;;
2563 athlon-4|athlon-[mx]p) echo -xarch=ssea ;;
2564 k8|opteron|athlon64|athlon-fx)
2565 echo -xarch=sse2a ;;
2566 athlon*) echo -xarch=pentium_proa ;;
2567 esac
2568 ;;
2569 -std=c99) echo -xc99 ;;
2570 -fomit-frame-pointer) echo -xregs=frameptr ;;
2571 -fPIC) echo -KPIC -xcode=pic32 ;;
2572 -W*,*) echo $flag ;;
2573 -f*-*|-W*|-mimpure-text) ;;
2574 -shared) echo -G ;;
2575 *) echo $flag ;;
2576 esac
2577 done
2578 }
2579
2580 tms470_flags(){
2581 for flag; do
2582 case $flag in
2583 -march=*|-mcpu=*)
2584 case "${flag#*=}" in
2585 armv7-a|cortex-a*) echo -mv=7a8 ;;
2586 armv7-r|cortex-r*) echo -mv=7r4 ;;
2587 armv7-m|cortex-m*) echo -mv=7m3 ;;
2588 armv6*|arm11*) echo -mv=6 ;;
2589 armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2590 echo -mv=5e ;;
2591 armv4*|arm7*|arm9[24]*) echo -mv=4 ;;
2592 esac
2593 ;;
2594 -mfpu=neon) echo --float_support=vfpv3 --neon ;;
2595 -mfpu=vfp) echo --float_support=vfpv2 ;;
2596 -mfpu=vfpv3) echo --float_support=vfpv3 ;;
2597 -mfpu=vfpv3-d16) echo --float_support=vfpv3d16 ;;
2598 -msoft-float) echo --float_support=vfplib ;;
2599 -O[0-3]|-mf=*) echo $flag ;;
2600 -g) echo -g -mn ;;
2601 -pds=*) echo $flag ;;
2602 -D*|-I*) echo $flag ;;
2603 --gcc|--abi=*) echo $flag ;;
2604 -me) echo $flag ;;
2605 esac
2606 done
2607 }
2608
2609 probe_cc(){
2610 pfx=$1
2611 _cc=$2
2612
2613 unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2614 unset _ld_o _ldflags _ld_lib _ld_path
2615 unset _depflags _DEPCMD _DEPFLAGS
2616 _flags_filter=echo
2617
2618 if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2619 _type=llvm_gcc
2620 gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2621 _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2622 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2623 _cflags_speed='-O3'
2624 _cflags_size='-Os'
2625 elif $_cc -v 2>&1 | grep -qi ^gcc; then
2626 _type=gcc
2627 gcc_version=$($_cc --version | head -n1)
2628 gcc_basever=$($_cc -dumpversion)
2629 gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2630 gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2631 _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2632 if ! $_cc -dumpversion | grep -q '^2\.'; then
2633 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2634 fi
2635 _cflags_speed='-O3'
2636 _cflags_size='-Os'
2637 elif $_cc --version 2>/dev/null | grep -q ^icc; then
2638 _type=icc
2639 _ident=$($_cc --version | head -n1)
2640 _depflags='-MMD'
2641 _cflags_speed='-O3'
2642 _cflags_size='-Os'
2643 _cflags_noopt='-O1'
2644 elif $_cc -v 2>&1 | grep -q xlc; then
2645 _type=xlc
2646 _ident=$($_cc -qversion 2>/dev/null | head -n1)
2647 _cflags_speed='-O5'
2648 _cflags_size='-O5 -qcompact'
2649 elif $_cc -V 2>/dev/null | grep -q Compaq; then
2650 _type=ccc
2651 _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2652 _DEPFLAGS='-M'
2653 _cflags_speed='-fast'
2654 _cflags_size='-O1'
2655 _flags_filter=ccc_flags
2656 elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2657 test -d "$sysroot" || die "No valid sysroot specified."
2658 _type=armcc
2659 _ident=$($_cc --vsn | head -n1)
2660 armcc_conf="$PWD/armcc.conf"
2661 $_cc --arm_linux_configure \
2662 --arm_linux_config_file="$armcc_conf" \
2663 --configure_sysroot="$sysroot" \
2664 --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2665 die "Error creating armcc configuration file."
2666 $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2667 _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2668 as_default="${cross_prefix}gcc"
2669 _depflags='-MMD'
2670 _cflags_speed='-O3'
2671 _cflags_size='-Os'
2672 elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2673 _type=tms470
2674 _ident=$($_cc -version | head -n1 | tr -s ' ')
2675 _flags='--gcc --abi=eabi -me'
2676 _cc_e='-ppl -fe=$@'
2677 _cc_o='-fe=$@'
2678 _depflags='-ppa -ppd=$(@:.o=.d)'
2679 _cflags_speed='-O3 -mf=5'
2680 _cflags_size='-O3 -mf=2'
2681 _flags_filter=tms470_flags
2682 elif $_cc -v 2>&1 | grep -q clang; then
2683 _type=clang
2684 _ident=$($_cc --version | head -n1)
2685 _depflags='-MMD'
2686 _cflags_speed='-O3'
2687 _cflags_size='-Os'
2688 elif $_cc -V 2>&1 | grep -q Sun; then
2689 _type=suncc
2690 _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2691 _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2692 _DEPFLAGS='-xM1 -xc99'
2693 _ldflags='-std=c99'
2694 _cflags_speed='-O5'
2695 _cflags_size='-O5 -xspace'
2696 _flags_filter=suncc_flags
2697 elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2698 _type=pathscale
2699 _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2700 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2701 _cflags_speed='-O2'
2702 _cflags_size='-Os'
2703 _flags_filter='filter_out -Wdisabled-optimization'
2704 elif $_cc -v 2>&1 | grep -q Open64; then
2705 _type=open64
2706 _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2707 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2708 _cflags_speed='-O2'
2709 _cflags_size='-Os'
2710 _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2711 elif $_cc -V 2>&1 | grep -q Portland; then
2712 _type=pgi
2713 _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2714 opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2715 _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2716 _cflags_size="-O2 -Munroll=c:1 $opt_common"
2717 _cflags_noopt="-O1"
2718 _flags_filter=pgi_flags
2719 elif $_cc 2>&1 | grep -q Microsoft; then
2720 _type=msvc
2721 _ident=$($cc 2>&1 | head -n1)
2722 _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2723 _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2724 _cflags_speed="-O2"
2725 _cflags_size="-O1"
2726 if $_cc 2>&1 | grep -q Linker; then
2727 _ld_o='-out:$@'
2728 else
2729 _ld_o='-Fe$@'
2730 fi
2731 _cc_o='-Fo$@'
2732 _cc_e='-P -Fi$@'
2733 _flags_filter=msvc_flags
2734 _ld_lib='lib%.a'
2735 _ld_path='-libpath:'
2736 _flags='-nologo'
2737 _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2738 if [ $pfx = hostcc ]; then
2739 append _cflags -Dsnprintf=_snprintf
2740 fi
2741 elif $_cc 2>&1 | grep -q Intel; then
2742 _type=icl
2743 _ident=$($cc 2>&1 | head -n1)
2744 _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2745 # Not only is O3 broken on 13.x+ but it is slower on all previous
2746 # versions (tested) as well.
2747 _cflags_speed="-O2"
2748 _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2749 if $_cc 2>&1 | grep -q Linker; then
2750 _ld_o='-out:$@'
2751 else
2752 _ld_o='-Fe$@'
2753 fi
2754 _cc_o='-Fo$@'
2755 _cc_e='-P'
2756 _flags_filter=icl_flags
2757 _ld_lib='lib%.a'
2758 _ld_path='-libpath:'
2759 # -Qdiag-error to make icl error when seeing certain unknown arguments
2760 _flags='-nologo -Qdiag-error:4044,10157'
2761 # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2762 # with MSVC which enables it by default.
2763 _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2764 if [ $pfx = hostcc ]; then
2765 append _cflags -Dsnprintf=_snprintf
2766 fi
2767 elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2768 _type=cparser
2769 _ident=$($_cc --version | head -n1)
2770 _depflags='-MMD'
2771 _cflags_speed='-O4'
2772 _cflags_size='-O2'
2773 _flags_filter=cparser_flags
2774 fi
2775
2776 eval ${pfx}_type=\$_type
2777 eval ${pfx}_ident=\$_ident
2778 }
2779
2780 set_ccvars(){
2781 eval ${1}_C=\${_cc_c-\${${1}_C}}
2782 eval ${1}_E=\${_cc_e-\${${1}_E}}
2783 eval ${1}_O=\${_cc_o-\${${1}_O}}
2784
2785 if [ -n "$_depflags" ]; then
2786 eval ${1}_DEPFLAGS=\$_depflags
2787 else
2788 eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2789 eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2790 eval DEP${1}FLAGS=\$_flags
2791 fi
2792 }
2793
2794 probe_cc cc "$cc"
2795 cflags_filter=$_flags_filter
2796 cflags_speed=$_cflags_speed
2797 cflags_size=$_cflags_size
2798 cflags_noopt=$_cflags_noopt
2799 add_cflags $_flags $_cflags
2800 cc_ldflags=$_ldflags
2801 set_ccvars CC
2802
2803 probe_cc hostcc "$host_cc"
2804 host_cflags_filter=$_flags_filter
2805 add_host_cflags $_flags $_cflags
2806 set_ccvars HOSTCC
2807
2808 test -n "$cc_type" && enable $cc_type ||
2809 warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2810
2811 : ${as_default:=$cc}
2812 : ${dep_cc_default:=$cc}
2813 : ${ld_default:=$cc}
2814 : ${host_ld_default:=$host_cc}
2815 set_default ar as dep_cc ld host_ld
2816
2817 probe_cc as "$as"
2818 asflags_filter=$_flags_filter
2819 add_asflags $_flags $_cflags
2820 set_ccvars AS
2821
2822 probe_cc ld "$ld"
2823 ldflags_filter=$_flags_filter
2824 add_ldflags $_flags $_ldflags
2825 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2826 LD_O=${_ld_o-$LD_O}
2827 LD_LIB=${_ld_lib-$LD_LIB}
2828 LD_PATH=${_ld_path-$LD_PATH}
2829
2830 probe_cc hostld "$host_ld"
2831 host_ldflags_filter=$_flags_filter
2832 add_host_ldflags $_flags $_ldflags
2833 HOSTLD_O=${_ld_o-$HOSTLD_O}
2834
2835 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2836 probe_cc depcc "$dep_cc"
2837 CCDEP=${_DEPCMD:-$DEPCMD}
2838 CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2839 DEPCCFLAGS=$_flags
2840 fi
2841
2842 if $ar 2>&1 | grep -q Microsoft; then
2843 arflags="-nologo"
2844 ar_o='-out:$@'
2845 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2846 arflags="rq"
2847 ar_o='$@'
2848 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2849 arflags='-Xany -r -c'
2850 ar_o='$@'
2851 else
2852 arflags="rc"
2853 ar_o='$@'
2854 fi
2855
2856 add_cflags $extra_cflags
2857 add_asflags $extra_cflags
2858
2859 if test -n "$sysroot"; then
2860 case "$cc_type" in
2861 gcc|llvm_gcc|clang)
2862 add_cppflags --sysroot="$sysroot"
2863 add_ldflags --sysroot="$sysroot"
2864 ;;
2865 tms470)
2866 add_cppflags -I"$sysinclude"
2867 add_ldflags --sysroot="$sysroot"
2868 ;;
2869 esac
2870 fi
2871
2872 if test "$cpu" = host; then
2873 enabled cross_compile &&
2874 die "--cpu=host makes no sense when cross-compiling."
2875
2876 case "$cc_type" in
2877 gcc|llvm_gcc)
2878 check_native(){
2879 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2880 sed -n "/cc1.*$1=/{
2881 s/.*$1=\\([^ ]*\\).*/\\1/
2882 p
2883 q
2884 }" $TMPE
2885 }
2886 cpu=$(check_native -march || check_native -mcpu)
2887 ;;
2888 esac
2889
2890 test "${cpu:-host}" = host &&
2891 die "--cpu=host not supported with compiler $cc"
2892 fi
2893
2894 # Deal with common $arch aliases
2895 case "$arch" in
2896 aarch64|arm64)
2897 arch="aarch64"
2898 ;;
2899 arm*)
2900 arch="arm"
2901 ;;
2902 mips*|IP*)
2903 arch="mips"
2904 ;;
2905 parisc*|hppa*)
2906 arch="parisc"
2907 ;;
2908 "Power Macintosh"|ppc*|powerpc*)
2909 arch="ppc"
2910 ;;
2911 s390|s390x)
2912 arch="s390"
2913 ;;
2914 sh4|sh)
2915 arch="sh4"
2916 ;;
2917 sun4u|sparc*)
2918 arch="sparc"
2919 ;;
2920 tilegx|tile-gx)
2921 arch="tilegx"
2922 ;;
2923 i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2924 arch="x86"
2925 ;;
2926 esac
2927
2928 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2929 enable $arch
2930
2931 # Add processor-specific flags
2932 if enabled aarch64; then
2933
2934 case $cpu in
2935 armv*)
2936 cpuflags="-march=$cpu"
2937 ;;
2938 *)
2939 cpuflags="-mcpu=$cpu"
2940 ;;
2941 esac
2942
2943 elif enabled alpha; then
2944
2945 cpuflags="-mcpu=$cpu"
2946
2947 elif enabled arm; then
2948
2949 check_arm_arch() {
2950 check_cpp_condition stddef.h \
2951 "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2952 $cpuflags
2953 }
2954
2955 probe_arm_arch() {
2956 if check_arm_arch 4; then echo armv4;
2957 elif check_arm_arch 4T; then echo armv4t;
2958 elif check_arm_arch 5; then echo armv5;
2959 elif check_arm_arch 5E; then echo armv5e;
2960 elif check_arm_arch 5T; then echo armv5t;
2961 elif check_arm_arch 5TE; then echo armv5te;
2962 elif check_arm_arch 5TEJ; then echo armv5te;
2963 elif check_arm_arch 6; then echo armv6;
2964 elif check_arm_arch 6J; then echo armv6j;
2965 elif check_arm_arch 6K; then echo armv6k;
2966 elif check_arm_arch 6Z; then echo armv6z;
2967 elif check_arm_arch 6ZK; then echo armv6zk;
2968 elif check_arm_arch 6T2; then echo armv6t2;
2969 elif check_arm_arch 7; then echo armv7;
2970 elif check_arm_arch 7A 7_A; then echo armv7-a;
2971 elif check_arm_arch 7R 7_R; then echo armv7-r;
2972 elif check_arm_arch 7M 7_M; then echo armv7-m;
2973 elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2974 elif check_arm_arch 8A 8_A; then echo armv8-a;
2975 fi
2976 }
2977
2978 [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2979
2980 case $cpu in
2981 armv*)
2982 cpuflags="-march=$cpu"
2983 subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2984 ;;
2985 *)
2986 cpuflags="-mcpu=$cpu"
2987 case $cpu in
2988 cortex-a*) subarch=armv7a ;;
2989 cortex-r*) subarch=armv7r ;;
2990 cortex-m*) enable thumb; subarch=armv7m ;;
2991 arm11*) subarch=armv6 ;;
2992 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2993 armv4*|arm7*|arm9[24]*) subarch=armv4 ;;
2994 *) subarch=$(probe_arm_arch) ;;
2995 esac
2996 ;;
2997 esac
2998
2999 case "$subarch" in
3000 armv5t*) enable fast_clz ;;
3001 armv[6-8]*) enable fast_clz fast_unaligned ;;
3002 esac
3003
3004 elif enabled avr32; then
3005
3006 case $cpu in
3007 ap7[02]0[0-2])
3008 subarch="avr32_ap"
3009 cpuflags="-mpart=$cpu"
3010 ;;
3011 ap)
3012 subarch="avr32_ap"
3013 cpuflags="-march=$cpu"
3014 ;;
3015 uc3[ab]*)
3016 subarch="avr32_uc"
3017 cpuflags="-mcpu=$cpu"
3018 ;;
3019 uc)
3020 subarch="avr32_uc"
3021 cpuflags="-march=$cpu"
3022 ;;
3023 esac
3024
3025 elif enabled bfin; then
3026
3027 cpuflags="-mcpu=$cpu"
3028
3029 elif enabled mips; then
3030
3031 cpuflags="-march=$cpu"
3032
3033 elif enabled ppc; then
3034
3035 case $(tolower $cpu) in
3036 601|ppc601|powerpc601)
3037 cpuflags="-mcpu=601"
3038 disable altivec
3039 ;;
3040 603*|ppc603*|powerpc603*)
3041 cpuflags="-mcpu=603"
3042 disable altivec
3043 ;;
3044 604*|ppc604*|powerpc604*)
3045 cpuflags="-mcpu=604"
3046 disable altivec
3047 ;;
3048 g3|75*|ppc75*|powerpc75*)
3049 cpuflags="-mcpu=750"
3050 disable altivec
3051 ;;
3052 g4|745*|ppc745*|powerpc745*)
3053 cpuflags="-mcpu=7450"
3054 ;;
3055 74*|ppc74*|powerpc74*)
3056 cpuflags="-mcpu=7400"
3057 ;;
3058 g5|970|ppc970|powerpc970)
3059 cpuflags="-mcpu=970"
3060 ;;
3061 power[3-7]*)
3062 cpuflags="-mcpu=$cpu"
3063 ;;
3064 cell)
3065 cpuflags="-mcpu=cell"
3066 enable ldbrx
3067 ;;
3068 e500mc)
3069 cpuflags="-mcpu=e500mc"
3070 disable altivec
3071 ;;
3072 e500v2)
3073 cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3074 disable altivec
3075 ;;
3076 e500)
3077 cpuflags="-mcpu=8540 -mhard-float"
3078 disable altivec
3079 ;;
3080 esac
3081
3082 elif enabled sparc; then
3083
3084 case $cpu in
3085 cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3086 cpuflags="-mcpu=$cpu"
3087 disable vis
3088 ;;
3089 ultrasparc*|niagara[234])
3090 cpuflags="-mcpu=$cpu"
3091 ;;
3092 esac
3093
3094 elif enabled x86; then
3095
3096 case $cpu in
3097 i[345]86|pentium)
3098 cpuflags="-march=$cpu"
3099 disable mmx
3100 ;;
3101 # targets that do NOT support nopl and conditional mov (cmov)
3102 pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3103 cpuflags="-march=$cpu"
3104 disable i686
3105 ;;
3106 # targets that do support nopl and conditional mov (cmov)
3107 i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3108 cpuflags="-march=$cpu"
3109 enable i686
3110 enable fast_cmov
3111 ;;
3112 # targets that do support conditional mov but on which it's slow
3113 pentium4|pentium4m|prescott|nocona)
3114 cpuflags="-march=$cpu"
3115 enable i686
3116 disable fast_cmov
3117 ;;
3118 esac
3119
3120 fi
3121
3122 if [ "$cpu" != generic ]; then
3123 add_cflags $cpuflags
3124 add_asflags $cpuflags
3125 fi
3126
3127 # compiler sanity check
3128 check_exec <<EOF
3129 int main(void){ return 0; }
3130 EOF
3131 if test "$?" != 0; then
3132 echo "$cc is unable to create an executable file."
3133 if test -z "$cross_prefix" && ! enabled cross_compile ; then
3134 echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3135 echo "Only do this if you know what cross compiling means."
3136 fi
3137 die "C compiler test failed."
3138 fi
3139
3140 add_cppflags -D_ISOC99_SOURCE
3141 check_cflags -std=c99
3142 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3143 #include <stdlib.h>
3144 EOF
3145 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3146 #include <stdlib.h>
3147 EOF
3148
3149 check_host_cflags -std=c99
3150 check_host_cflags -Wall
3151
3152 check_64bit(){
3153 arch32=$1
3154 arch64=$2
3155 expr=$3
3156 check_code cc "" "int test[2*($expr) - 1]" &&
3157 subarch=$arch64 || subarch=$arch32
3158 }
3159
3160 case "$arch" in
3161 aarch64|alpha|ia64)
3162 spic=$shared
3163 ;;
3164 mips)
3165 check_64bit mips mips64 '_MIPS_SIM > 1'
3166 spic=$shared
3167 ;;
3168 parisc)
3169 check_64bit parisc parisc64 'sizeof(void *) > 4'
3170 spic=$shared
3171 ;;
3172 ppc)
3173 check_64bit ppc ppc64 'sizeof(void *) > 4'
3174 spic=$shared
3175 ;;
3176 sparc)
3177 check_64bit sparc sparc64 'sizeof(void *) > 4'
3178 spic=$shared
3179 ;;
3180 x86)
3181 check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3182 if test "$subarch" = "x86_64"; then
3183 spic=$shared
3184 fi
3185 ;;
3186 esac
3187
3188 enable $subarch
3189 enabled spic && enable_weak pic
3190
3191 # OS specific
3192 case $target_os in
3193 aix)
3194 SHFLAGS=-shared
3195 add_cppflags '-I\$(SRC_PATH)/compat/aix'
3196 enabled shared && add_ldflags -Wl,-brtl
3197 ;;
3198 haiku)
3199 prefix_default="/boot/common"
3200 network_extralibs="-lnetwork"
3201 host_libs=
3202 ;;
3203 sunos)
3204 SHFLAGS='-shared -Wl,-h,$$(@F)'
3205 enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3206 network_extralibs="-lsocket -lnsl"
3207 # When using suncc to build, the Solaris linker will mark
3208 # an executable with each instruction set encountered by
3209 # the Solaris assembler. As our libraries contain their own
3210 # guards for processor-specific code, instead suppress
3211 # generation of the HWCAPS ELF section on Solaris x86 only.
3212 enabled_all suncc x86 &&
3213 echo "hwcap_1 = OVERRIDE;" > mapfile &&
3214 add_ldflags -Wl,-M,mapfile
3215 nm_default='nm -P -g'
3216 ;;
3217 netbsd)
3218 disable symver
3219 oss_indev_extralibs="-lossaudio"
3220 oss_outdev_extralibs="-lossaudio"
3221 ;;
3222 openbsd|bitrig)
3223 disable symver
3224 SHFLAGS='-shared'
3225 SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3226 SLIB_INSTALL_LINKS=
3227 oss_indev_extralibs="-lossaudio"
3228 oss_outdev_extralibs="-lossaudio"
3229 ;;
3230 dragonfly)
3231 disable symver
3232 ;;
3233 freebsd)
3234 ;;
3235 bsd/os)
3236 add_extralibs -lpoll -lgnugetopt
3237 ;;
3238 darwin)
3239 gas="gas-preprocessor.pl $cc"
3240 enabled ppc && add_asflags -force_cpusubtype_ALL
3241 SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3242 enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3243 add_ldflags -Wl,-dynamic,-search_paths_first
3244 SLIBSUF=".dylib"
3245 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3246 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3247 objformat="macho"
3248 enabled x86_64 && objformat="macho64"
3249 enabled_any pic shared ||
3250 { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3251 ;;
3252 mingw32*)
3253 if test $target_os = "mingw32ce"; then
3254 disable network
3255 else
3256 target_os=mingw32
3257 fi
3258 LIBTARGET=i386
3259 if enabled x86_64; then
3260 LIBTARGET="i386:x86-64"
3261 elif enabled arm; then
3262 LIBTARGET=arm-wince
3263 fi
3264 check_ldflags -Wl,--nxcompat
3265 check_ldflags -Wl,--dynamicbase
3266 shlibdir_default="$bindir_default"
3267 SLIBPREF=""
3268 SLIBSUF=".dll"
3269 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3270 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3271 SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3272 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3273 SLIB_INSTALL_LINKS=
3274 SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3275 SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3276 SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3277 objformat="win32"
3278 dlltool="${cross_prefix}dlltool"
3279 ranlib=:
3280 enable dos_paths
3281 ;;
3282 win32|win64)
3283 disable symver
3284 if enabled shared; then
3285 # Link to the import library instead of the normal static library
3286 # for shared libs.
3287 LD_LIB='%.lib'
3288 # Cannot build both shared and static libs with MSVC or icl.
3289 disable static
3290 fi
3291 shlibdir_default="$bindir_default"
3292 SLIBPREF=""
3293 SLIBSUF=".dll"
3294 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3295 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3296 SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3297 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3298 SLIB_INSTALL_LINKS=
3299 SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3300 SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3301 SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3302 objformat="win32"
3303 ranlib=:
3304 enable dos_paths
3305 ;;
3306 cygwin*)
3307 target_os=cygwin
3308 shlibdir_default="$bindir_default"
3309 SLIBPREF="cyg"
3310 SLIBSUF=".dll"
3311 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3312 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3313 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3314 SLIB_INSTALL_LINKS=
3315 SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3316 SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3317 objformat="win32"
3318 enable dos_paths
3319 ;;
3320 *-dos|freedos|opendos)
3321 network_extralibs="-lsocket"
3322 objformat="coff"
3323 enable dos_paths
3324 add_cppflags -U__STRICT_ANSI__
3325 ;;
3326 linux)
3327 enable dv1394
3328 ;;
3329 irix*)
3330 target_os=irix
3331 ranlib="echo ignoring ranlib"
3332 ;;
3333 os/2*)
3334 ln_s="cp -f"
3335 objformat="aout"
3336 add_cppflags -D_GNU_SOURCE
3337 add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3338 SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3339 LIBSUF="_s.a"
3340 SLIBPREF=""
3341 SLIBSUF=".dll"
3342 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3343 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3344 SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3345 echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3346 echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3347 echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3348 echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3349 emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3350 SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3351 emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3352 SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3353 enable dos_paths
3354 ;;
3355 gnu/kfreebsd)
3356 add_cppflags -D_BSD_SOURCE
3357 ;;
3358 gnu)
3359 ;;
3360 qnx)
3361 add_cppflags -D_QNX_SOURCE
3362 network_extralibs="-lsocket"
3363 ;;
3364 symbian)
3365 SLIBSUF=".dll"
3366 enable dos_paths
3367 add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3368 add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3369 add_ldflags -Wl,--target1-abs,--no-undefined \
3370 -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3371 -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3372 add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3373 -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3374 -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3375 ;;
3376 osf1)
3377 add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3378 ;;
3379 minix)
3380 ;;
3381 plan9)
3382 add_cppflags -D_C99_SNPRINTF_EXTENSION \
3383 -D_REENTRANT_SOURCE \
3384 -D_RESEARCH_SOURCE \
3385 -DFD_SETSIZE=96 \
3386 -DHAVE_SOCK_OPTS
3387 add_compat strtod.o strtod=avpriv_strtod
3388 network_extralibs='-lbsd'
3389 exeobjs=compat/plan9/main.o
3390 disable avserver
3391 cp_f='cp'
3392 ;;
3393 none)
3394 ;;
3395 *)
3396 die "Unknown OS '$target_os'."
3397 ;;
3398 esac
3399
3400 # determine libc flavour
3401
3402 probe_libc(){
3403 pfx=$1
3404 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3405 if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3406 eval ${pfx}libc_type=uclibc
3407 add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3408 elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3409 eval ${pfx}libc_type=glibc
3410 add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3411 # MinGW headers can be installed on Cygwin, so check for newlib first.
3412 elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3413 eval ${pfx}libc_type=newlib
3414 add_${pfx}cppflags -U__STRICT_ANSI__
3415 # MinGW64 is backwards compatible with MinGW32, so check for it first.
3416 elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3417 eval ${pfx}libc_type=mingw64
3418 add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3419 elif check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3420 eval ${pfx}libc_type=mingw32
3421 check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3422 (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3423 die "ERROR: MinGW32 runtime version must be >= 3.15."
3424 add_${pfx}cppflags -U__STRICT_ANSI__
3425 elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3426 eval ${pfx}libc_type=msvcrt
3427 # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3428 # 0x601 by default unless something else is set by the user.
3429 # This can easily lead to us detecting functions only present
3430 # in such new versions and producing binaries requiring windows 7.0.
3431 # Therefore explicitly set the default to XP unless the user has
3432 # set something else on the command line.
3433 check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3434 add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3435 elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3436 eval ${pfx}libc_type=klibc
3437 elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3438 eval ${pfx}libc_type=bionic
3439 elif check_${pfx}cpp_condition sys/brand.h "defined SOLARIS_BRAND_NAME"; then
3440 eval ${pfx}libc_type=solaris
3441 add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3442 fi
3443 }
3444
3445 probe_libc
3446 test -n "$libc_type" && enable libc_$libc_type
3447 probe_libc host_
3448 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3449
3450 case $libc_type in
3451 bionic)
3452 add_compat strtod.o strtod=avpriv_strtod
3453 ;;
3454 msvcrt)
3455 add_compat strtod.o strtod=avpriv_strtod
3456 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf \
3457 _snprintf=avpriv_snprintf \
3458 vsnprintf=avpriv_vsnprintf
3459 ;;
3460 esac
3461
3462 # hacks for compiler/libc/os combinations
3463
3464 if enabled_all tms470 libc_glibc; then
3465 CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3466 add_cppflags -D__USER_LABEL_PREFIX__=
3467 add_cppflags -D__builtin_memset=memset
3468 add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3469 add_cflags -pds=48 # incompatible redefinition of macro
3470 fi
3471
3472 if enabled_all ccc libc_glibc; then
3473 add_ldflags -Wl,-z,now # calls to libots crash without this
3474 fi
3475
3476 esc(){
3477 echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3478 }
3479
3480 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3481
3482 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3483
3484 set_default $PATHS_LIST
3485 set_default nm
3486
3487 # we need to build at least one lib type
3488 if ! enabled_any static shared; then
3489 cat <<EOF
3490 At least one library type must be built.
3491 Specify --enable-static to build the static libraries or --enable-shared to
3492 build the shared libraries as well. To only build the shared libraries specify
3493 --disable-static in addition to --enable-shared.
3494 EOF
3495 exit 1;
3496 fi
3497
3498 die_license_disabled() {
3499 enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3500 }
3501
3502 die_license_disabled gpl libcdio
3503 die_license_disabled gpl libx264
3504 die_license_disabled gpl libxavs
3505 die_license_disabled gpl libxvid
3506 die_license_disabled gpl x11grab
3507
3508 die_license_disabled nonfree libfaac
3509 die_license_disabled nonfree libfdk_aac
3510 die_license_disabled nonfree openssl
3511
3512 die_license_disabled version3 libopencore_amrnb
3513 die_license_disabled version3 libopencore_amrwb
3514 die_license_disabled version3 libvo_aacenc
3515 die_license_disabled version3 libvo_amrwbenc
3516
3517 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3518
3519 disabled optimizations || check_cflags -fomit-frame-pointer
3520
3521 enable_weak_pic() {
3522 disabled pic && return
3523 enable pic
3524 add_cppflags -DPIC
3525 case "$target_os" in
3526 mingw*|cygwin*)
3527 ;;
3528 *)
3529 add_cflags -fPIC
3530 ;;
3531 esac
3532 add_asflags -fPIC
3533 }
3534
3535 enabled pic && enable_weak_pic
3536
3537 check_cc <<EOF || die "Symbol mangling check failed."
3538 int ff_extern;
3539 EOF
3540 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3541 extern_prefix=${sym%%ff_extern*}
3542
3543 check_cc <<EOF && enable_weak inline_asm
3544 void foo(void) { __asm__ volatile ("" ::); }
3545 EOF
3546
3547 _restrict=
3548 for restrict_keyword in restrict __restrict__ __restrict; do
3549 check_cc <<EOF && _restrict=$restrict_keyword && break
3550 void foo(char * $restrict_keyword p);
3551 EOF
3552 done
3553
3554 check_cc <<EOF && enable pragma_deprecated
3555 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3556 EOF
3557
3558 check_cc <<EOF && enable attribute_packed
3559 struct { int x; } __attribute__((packed)) x;
3560 EOF
3561
3562 check_cc <<EOF && enable attribute_may_alias
3563 union { int x; } __attribute__((may_alias)) x;
3564 EOF
3565
3566 check_cc <<EOF || die "endian test failed"
3567 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3568 EOF
3569 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3570
3571 check_inline_asm inline_asm_labels '"1:\n"'
3572
3573 if enabled alpha; then
3574
3575 check_cflags -mieee
3576
3577 elif enabled arm; then
3578
3579 check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3580 enabled thumb && check_cflags -mthumb || check_cflags -marm
3581 nogas=die
3582
3583 if check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3584 enable vfp_args
3585 elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3586 case "${cross_prefix:-$cc}" in
3587 *hardfloat*) enable vfp_args; fpabi=vfp ;;
3588 *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3589 __asm__ (".eabi_attribute 28, 1");
3590 int main(void) { return 0; }
3591 EOF
3592 esac
3593 warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3594 fi
3595
3596 enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3597 enabled armv6 && check_insn armv6 'sadd16 r0, r0, r0'
3598 enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3599 enabled neon && check_insn neon 'vadd.i16 q0, q0, q0'
3600 enabled vfp && check_insn vfp 'fadds s0, s0, s0'
3601 enabled vfpv3 && check_insn vfpv3 'vmov.f32 s0, #1.0'
3602
3603 [ $target_os = linux ] ||
3604 map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3605 $ARCH_EXT_LIST_ARM
3606
3607 check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3608 check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3609
3610 [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3611
3612 elif enabled mips; then
3613
3614 check_inline_asm loongson '"dmult.g $1, $2, $3"'
3615
3616 elif enabled parisc; then
3617
3618 if enabled gcc; then
3619 case $($cc -dumpversion) in
3620 4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3621 esac
3622 fi
3623
3624 elif enabled ppc; then
3625
3626 enable local_aligned_8 local_aligned_16
3627
3628 check_inline_asm dcbzl '"dcbzl 0, %0" :: "r"(0)'
3629 check_inline_asm ibm_asm '"add 0, 0, 0"'
3630 check_inline_asm ppc4xx '"maclhw r10, r11, r12"'
3631 check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3632
3633 # AltiVec flags: The FSF version of GCC differs from the Apple version
3634 if enabled altivec; then
3635 nogas=warn
3636 check_cflags -maltivec -mabi=altivec &&
3637 { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3638 check_cflags -faltivec
3639
3640 # check if our compiler supports Motorola AltiVec C API
3641 check_cc <<EOF || disable altivec
3642 $inc_altivec_h
3643 int main(void) {
3644 vector signed int v1 = (vector signed int) { 0 };
3645 vector signed int v2 = (vector signed int) { 1 };
3646 v1 = vec_add(v1, v2);
3647 return 0;
3648 }
3649 EOF
3650
3651 enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3652 fi
3653
3654 elif enabled sparc; then
3655
3656 enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3657
3658 elif enabled x86; then
3659
3660 check_builtin rdtsc intrin.h "__rdtsc()"
3661 check_builtin mm_empty mmintrin.h "_mm_empty()"
3662
3663 enable local_aligned_8 local_aligned_16
3664
3665 # check whether EBP is available on x86
3666 # As 'i' is stored on the stack, this program will crash
3667 # if the base pointer is used to access it because the
3668 # base pointer is cleared in the inline assembly code.
3669 check_exec_crash <<EOF && enable ebp_available
3670 volatile int i=0;
3671 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3672 return i;
3673 EOF
3674
3675 # check whether EBX is available on x86
3676 check_inline_asm ebx_available '""::"b"(0)' &&
3677 check_inline_asm ebx_available '"":::"%ebx"'
3678
3679 # check whether xmm clobbers are supported
3680 check_inline_asm xmm_clobbers '"":::"%xmm0"'
3681
3682 # check whether binutils is new enough to compile SSSE3/MMXEXT
3683 enabled ssse3 && check_inline_asm ssse3_inline '"pabsw %xmm0, %xmm0"'
3684 enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3685
3686 if ! disabled_any asm mmx yasm; then
3687 if check_cmd $yasmexe --version; then
3688 enabled x86_64 && yasm_extra="-m amd64"
3689 yasm_debug="-g dwarf2"
3690 elif check_cmd nasm -v; then
3691 yasmexe=nasm
3692 yasm_debug="-g -F dwarf"
3693 enabled x86_64 && test "$objformat" = elf && objformat=elf64
3694 fi
3695
3696 YASMFLAGS="-f $objformat $yasm_extra"
3697 enabled pic && append YASMFLAGS "-DPIC"
3698 test -n "$extern_prefix" && append YASMFLAGS "-DPREFIX"
3699 case "$objformat" in
3700 elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3701 esac
3702