configure: Set default HOSTCFLAGS/HOSTCPPFLAGS after compiler detection
[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-libwebp enable WebP encoding via libwebp [no]
206 --enable-libx264 enable H.264 encoding via x264 [no]
207 --enable-libxavs enable AVS encoding via xavs [no]
208 --enable-libxvid enable Xvid encoding via xvidcore,
209 native MPEG-4/Xvid encoder exists [no]
210 --enable-openssl enable openssl [no]
211 --enable-x11grab enable X11 grabbing [no]
212 --enable-zlib enable zlib [autodetect]
213
214 Advanced options (experts only):
215 --cross-prefix=PREFIX use PREFIX for compilation tools [$cross_prefix]
216 --enable-cross-compile assume a cross-compiler is used
217 --sysroot=PATH root of cross-build tree
218 --sysinclude=PATH location of cross-build system headers
219 --target-os=OS compiler targets OS [$target_os]
220 --target-exec=CMD command to run executables on target
221 --target-path=DIR path to view of build directory on target
222 --target-samples=DIR path to samples directory on target
223 --toolchain=NAME set tool defaults according to NAME
224 --nm=NM use nm tool
225 --ar=AR use archive tool AR [$ar_default]
226 --as=AS use assembler AS [$as_default]
227 --cc=CC use C compiler CC [$cc_default]
228 --dep-cc=DEPCC use dependency generator DEPCC [$cc_default]
229 --ld=LD use linker LD
230 --host-cc=HOSTCC use host C compiler HOSTCC
231 --host-cflags=HCFLAGS use HCFLAGS when compiling for host
232 --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
233 --host-ld=HOSTLD use host linker HOSTLD
234 --host-ldflags=HLDFLAGS use HLDFLAGS when linking for host
235 --host-libs=HLIBS use libs HLIBS when linking for host
236 --host-os=OS compiler host OS [$target_os]
237 --extra-cflags=ECFLAGS add ECFLAGS to CFLAGS [$CFLAGS]
238 --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
239 --extra-libs=ELIBS add ELIBS [$ELIBS]
240 --extra-version=STRING version string suffix []
241 --optflags=OPTFLAGS override optimization-related compiler flags
242 --build-suffix=SUFFIX library name suffix []
243 --malloc-prefix=PREFIX prefix malloc and related names with PREFIX
244 --arch=ARCH select architecture [$arch]
245 --cpu=CPU select the minimum required CPU (affects
246 instruction selection, may crash on older CPUs)
247 --enable-pic build position-independent code
248 --enable-sram allow use of on-chip SRAM
249 --enable-thumb compile for Thumb instruction set
250 --disable-symver disable symbol versioning
251 --enable-hardcoded-tables use hardcoded tables instead of runtime generation
252 --disable-safe-bitstream-reader
253 disable buffer boundary checking in bitreaders
254 (faster, but may crash)
255 --enable-memalign-hack emulate memalign, interferes with memory debuggers
256 --enable-lto use link-time optimization
257
258 Optimization options (experts only):
259 --disable-asm disable all assembler optimizations
260 --disable-altivec disable AltiVec optimizations
261 --disable-amd3dnow disable 3DNow! optimizations
262 --disable-amd3dnowext disable 3DNow! extended optimizations
263 --disable-mmx disable MMX optimizations
264 --disable-mmxext disable MMXEXT optimizations
265 --disable-sse disable SSE optimizations
266 --disable-sse2 disable SSE2 optimizations
267 --disable-sse3 disable SSE3 optimizations
268 --disable-ssse3 disable SSSE3 optimizations
269 --disable-sse4 disable SSE4 optimizations
270 --disable-sse42 disable SSE4.2 optimizations
271 --disable-avx disable AVX optimizations
272 --disable-fma4 disable FMA4 optimizations
273 --disable-avx2 disable AVX2 optimizations
274 --disable-armv5te disable armv5te optimizations
275 --disable-armv6 disable armv6 optimizations
276 --disable-armv6t2 disable armv6t2 optimizations
277 --disable-vfp disable VFP optimizations
278 --disable-neon disable NEON optimizations
279 --disable-vis disable VIS optimizations
280 --disable-inline-asm disable use of inline assembler
281 --disable-yasm disable use of yasm assembler
282
283 Developer options (useful when working on Libav itself):
284 --disable-debug disable debugging symbols
285 --enable-debug=LEVEL set the debug level [$debuglevel]
286 --disable-optimizations disable compiler optimizations
287 --enable-extra-warnings enable more compiler warnings
288 --samples=PATH location of test samples for FATE, if not set use
289 \$LIBAV_SAMPLES at make invocation time.
290 --enable-neon-clobber-test check NEON registers for clobbering (should be
291 used only for debugging purposes)
292 --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
293 should be used only for debugging purposes)
294 --enable-random randomly enable/disable components
295 --disable-random
296 --enable-random=LIST randomly enable/disable specific components or
297 --disable-random=LIST component groups. LIST is a comma-separated list
298 of NAME[:PROB] entries where NAME is a component
299 (group) and PROB the probability associated with
300 NAME (default 0.5).
301 --random-seed=VALUE seed value for --enable/disable-random
302
303 NOTE: Object files are built at the place where configure is launched.
304 EOF
305 exit 0
306 }
307
308 quotes='""'
309
310 log(){
311 echo "$@" >> $logfile
312 }
313
314 log_file(){
315 log BEGIN $1
316 pr -n -t $1 >> $logfile
317 log END $1
318 }
319
320 echolog(){
321 log "$@"
322 echo "$@"
323 }
324
325 warn(){
326 log "WARNING: $*"
327 WARNINGS="${WARNINGS}WARNING: $*\n"
328 }
329
330 die(){
331 echolog "$@"
332 cat <<EOF
333
334 If you think configure made a mistake, make sure you are using the latest
335 version from Git. If the latest version fails, report the problem to the
336 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
337 EOF
338 if disabled logging; then
339 cat <<EOF
340 Rerun configure with logging enabled (do not use --disable-logging), and
341 include the log this produces with your report.
342 EOF
343 else
344 cat <<EOF
345 Include the log file "$logfile" produced by configure as this will help
346 solving the problem.
347 EOF
348 fi
349 exit 1
350 }
351
352 # Avoid locale weirdness, besides we really just want to translate ASCII.
353 toupper(){
354 echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
355 }
356
357 tolower(){
358 echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
359 }
360
361 c_escape(){
362 echo "$*" | sed 's/["\\]/\\\0/g'
363 }
364
365 sh_quote(){
366 v=$(echo "$1" | sed "s/'/'\\\\''/g")
367 test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
368 echo "$v"
369 }
370
371 cleanws(){
372 echo "$@" | sed 's/^ *//;s/ */ /g;s/ *$//'
373 }
374
375 filter(){
376 pat=$1
377 shift
378 for v; do
379 eval "case $v in $pat) echo $v ;; esac"
380 done
381 }
382
383 filter_out(){
384 pat=$1
385 shift
386 for v; do
387 eval "case $v in $pat) ;; *) echo $v ;; esac"
388 done
389 }
390
391 map(){
392 m=$1
393 shift
394 for v; do eval $m; done
395 }
396
397 add_suffix(){
398 suffix=$1
399 shift
400 for v; do echo ${v}${suffix}; done
401 }
402
403 set_all(){
404 value=$1
405 shift
406 for var in $*; do
407 eval $var=$value
408 done
409 }
410
411 set_weak(){
412 value=$1
413 shift
414 for var; do
415 eval : \${$var:=$value}
416 done
417 }
418
419 sanitize_var_name(){
420 echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
421 }
422
423 set_safe(){
424 var=$1
425 shift
426 eval $(sanitize_var_name "$var")='$*'
427 }
428
429 get_safe(){
430 eval echo \$$(sanitize_var_name "$1")
431 }
432
433 pushvar(){
434 for pvar in $*; do
435 eval level=\${${pvar}_level:=0}
436 eval ${pvar}_${level}="\$$pvar"
437 eval ${pvar}_level=$(($level+1))
438 done
439 }
440
441 popvar(){
442 for pvar in $*; do
443 eval level=\${${pvar}_level:-0}
444 test $level = 0 && continue
445 eval level=$(($level-1))
446 eval $pvar="\${${pvar}_${level}}"
447 eval ${pvar}_level=$level
448 eval unset ${pvar}_${level}
449 done
450 }
451
452 enable(){
453 set_all yes $*
454 }
455
456 disable(){
457 set_all no $*
458 }
459
460 enable_weak(){
461 set_weak yes $*
462 }
463
464 disable_weak(){
465 set_weak no $*
466 }
467
468 enable_safe(){
469 for var; do
470 enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
471 done
472 }
473
474 disable_safe(){
475 for var; do
476 disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
477 done
478 }
479
480 do_enable_deep(){
481 for var; do
482 enabled $var && continue
483 eval sel="\$${var}_select"
484 eval sgs="\$${var}_suggest"
485 pushvar var sgs
486 enable_deep $sel
487 popvar sgs
488 enable_deep_weak $sgs
489 popvar var
490 done
491 }
492
493 enable_deep(){
494 do_enable_deep $*
495 enable $*
496 }
497
498 enable_deep_weak(){
499 for var; do
500 disabled $var && continue
501 pushvar var
502 do_enable_deep $var
503 popvar var
504 enable_weak $var
505 done
506 }
507
508 enabled(){
509 test "${1#!}" = "$1" && op== || op=!=
510 eval test "x\$${1#!}" $op "xyes"
511 }
512
513 disabled(){
514 test "${1#!}" = "$1" && op== || op=!=
515 eval test "x\$${1#!}" $op "xno"
516 }
517
518 enabled_all(){
519 for opt; do
520 enabled $opt || return 1
521 done
522 }
523
524 disabled_all(){
525 for opt; do
526 disabled $opt || return 1
527 done
528 }
529
530 enabled_any(){
531 for opt; do
532 enabled $opt && return 0
533 done
534 }
535
536 disabled_any(){
537 for opt; do
538 disabled $opt && return 0
539 done
540 return 1
541 }
542
543 set_default(){
544 for opt; do
545 eval : \${$opt:=\$${opt}_default}
546 done
547 }
548
549 is_in(){
550 value=$1
551 shift
552 for var in $*; do
553 [ $var = $value ] && return 0
554 done
555 return 1
556 }
557
558 do_check_deps(){
559 for cfg; do
560 cfg="${cfg#!}"
561 enabled ${cfg}_checking && die "Circular dependency for $cfg."
562 disabled ${cfg}_checking && continue
563 enable ${cfg}_checking
564 append allopts $cfg
565
566 eval dep_all="\$${cfg}_deps"
567 eval dep_any="\$${cfg}_deps_any"
568 eval dep_sel="\$${cfg}_select"
569 eval dep_sgs="\$${cfg}_suggest"
570 eval dep_ifa="\$${cfg}_if"
571 eval dep_ifn="\$${cfg}_if_any"
572
573 pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
574 do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
575 popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
576
577 [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
578 [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
579 enabled_all $dep_all || disable $cfg
580 enabled_any $dep_any || disable $cfg
581 disabled_any $dep_sel && disable $cfg
582
583 if enabled $cfg; then
584 enable_deep $dep_sel
585 enable_deep_weak $dep_sgs
586 fi
587
588 disable ${cfg}_checking
589 done
590 }
591
592 check_deps(){
593 unset allopts
594
595 do_check_deps "$@"
596
597 for cfg in $allopts; do
598 enabled $cfg || continue
599 eval dep_extralibs="\$${cfg}_extralibs"
600 test -n "$dep_extralibs" && add_extralibs $dep_extralibs
601 done
602 }
603
604 print_config(){
605 pfx=$1
606 files=$2
607 shift 2
608 map 'eval echo "$v \${$v:-no}"' "$@" |
609 awk "BEGIN { split(\"$files\", files) }
610 {
611 c = \"$pfx\" toupper(\$1);
612 v = \$2;
613 sub(/yes/, 1, v);
614 sub(/no/, 0, v);
615 for (f in files) {
616 file = files[f];
617 if (file ~ /\\.h\$/) {
618 printf(\"#define %s %d\\n\", c, v) >>file;
619 } else if (file ~ /\\.asm\$/) {
620 printf(\"%%define %s %d\\n\", c, v) >>file;
621 } else if (file ~ /\\.mak\$/) {
622 n = -v ? \"\" : \"!\";
623 printf(\"%s%s=yes\\n\", n, c) >>file;
624 }
625 }
626 }"
627 }
628
629 print_enabled(){
630 suf=$1
631 shift
632 for v; do
633 enabled $v && printf "%s\n" ${v%$suf};
634 done
635 }
636
637 append(){
638 var=$1
639 shift
640 eval "$var=\"\$$var $*\""
641 }
642
643 prepend(){
644 var=$1
645 shift
646 eval "$var=\"$* \$$var\""
647 }
648
649 add_cppflags(){
650 append CPPFLAGS "$@"
651 }
652
653 add_cflags(){
654 append CFLAGS $($cflags_filter "$@")
655 }
656
657 add_asflags(){
658 append ASFLAGS $($asflags_filter "$@")
659 }
660
661 add_ldflags(){
662 append LDFLAGS $($ldflags_filter "$@")
663 }
664
665 add_stripflags(){
666 append STRIPFLAGS "$@"
667 }
668
669 add_extralibs(){
670 prepend extralibs $($ldflags_filter "$@")
671 }
672
673 add_host_cppflags(){
674 append host_cppflags "$@"
675 }
676
677 add_host_cflags(){
678 append host_cflags $($host_cflags_filter "$@")
679 }
680
681 add_host_ldflags(){
682 append host_ldflags $($host_ldflags_filter "$@")
683 }
684
685 add_compat(){
686 append compat_objs $1
687 shift
688 map 'add_cppflags -D$v' "$@"
689 }
690
691 check_cmd(){
692 log "$@"
693 "$@" >> $logfile 2>&1
694 }
695
696 cc_o(){
697 eval printf '%s\\n' $CC_O
698 }
699
700 cc_e(){
701 eval printf '%s\\n' $CC_E
702 }
703
704 check_cc(){
705 log check_cc "$@"
706 cat > $TMPC
707 log_file $TMPC
708 check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
709 }
710
711 check_cpp(){
712 log check_cpp "$@"
713 cat > $TMPC
714 log_file $TMPC
715 check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
716 }
717
718 as_o(){
719 eval printf '%s\\n' $AS_O
720 }
721
722 check_as(){
723 log check_as "$@"
724 cat > $TMPS
725 log_file $TMPS
726 check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
727 }
728
729 check_inline_asm(){
730 log check_inline_asm "$@"
731 name="$1"
732 code="$2"
733 shift 2
734 disable $name
735 check_cc "$@" <<EOF && enable $name
736 void foo(void){ __asm__ volatile($code); }
737 EOF
738 }
739
740 check_insn(){
741 log check_insn "$@"
742 check_inline_asm ${1}_inline "\"$2\""
743 echo "$2" | check_as && enable ${1}_external || disable ${1}_external
744 }
745
746 check_yasm(){
747 log check_yasm "$@"
748 echo "$1" > $TMPS
749 log_file $TMPS
750 shift 1
751 check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
752 }
753
754 ld_o(){
755 eval printf '%s\\n' $LD_O
756 }
757
758 check_ld(){
759 log check_ld "$@"
760 flags=$(filter_out '-l*' "$@")
761 libs=$(filter '-l*' "$@")
762 check_cc $($cflags_filter $flags) || return
763 flags=$($ldflags_filter $flags)
764 libs=$($ldflags_filter $libs)
765 check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
766 }
767
768 print_include(){
769 hdr=$1
770 test "${hdr%.h}" = "${hdr}" &&
771 echo "#include $hdr" ||
772 echo "#include <$hdr>"
773 }
774
775 check_code(){
776 log check_code "$@"
777 check=$1
778 headers=$2
779 code=$3
780 shift 3
781 {
782 for hdr in $headers; do
783 print_include $hdr
784 done
785 echo "int main(void) { $code; return 0; }"
786 } | check_$check "$@"
787 }
788
789 check_cppflags(){
790 log check_cppflags "$@"
791 check_cc "$@" <<EOF && append CPPFLAGS "$@"
792 int x;
793 EOF
794 }
795
796 test_cflags(){
797 log test_cflags "$@"
798 set -- $($cflags_filter "$@")
799 check_cc "$@" <<EOF
800 int x;
801 EOF
802 }
803
804 check_cflags(){
805 log check_cflags "$@"
806 test_cflags "$@" && add_cflags "$@"
807 }
808
809 test_ldflags(){
810 log test_ldflags "$@"
811 check_ld "$@" <<EOF
812 int main(void){ return 0; }
813 EOF
814 }
815
816 check_ldflags(){
817 log check_ldflags "$@"
818 test_ldflags "$@" && add_ldflags "$@"
819 }
820
821 test_stripflags(){
822 log test_stripflags "$@"
823 # call check_cc to get a fresh TMPO
824 check_cc <<EOF
825 int main(void) { return 0; }
826 EOF
827 check_cmd $strip $STRIPFLAGS "$@" $TMPO
828 }
829
830 check_stripflags(){
831 log check_stripflags "$@"
832 test_stripflags "$@" && add_stripflags "$@"
833 }
834
835 check_header(){
836 log check_header "$@"
837 header=$1
838 shift
839 disable_safe $header
840 check_cpp "$@" <<EOF && enable_safe $header
841 #include <$header>
842 int x;
843 EOF
844 }
845
846 check_func(){
847 log check_func "$@"
848 func=$1
849 shift
850 disable $func
851 check_ld "$@" <<EOF && enable $func
852 extern int $func();
853 int main(void){ $func(); }
854 EOF
855 }
856
857 check_mathfunc(){
858 log check_mathfunc "$@"
859 func=$1
860 narg=$2
861 shift 2
862 test $narg = 2 && args="f, g" || args="f"
863 disable $func
864 check_ld "$@" <<EOF && enable $func
865 #include <math.h>
866 float foo(float f, float g) { return $func($args); }
867 int main(void){ return 0; }
868 EOF
869 }
870
871 check_func_headers(){
872 log check_func_headers "$@"
873 headers=$1
874 funcs=$2
875 shift 2
876 {
877 for hdr in $headers; do
878 print_include $hdr
879 done
880 for func in $funcs; do
881 echo "long check_$func(void) { return (long) $func; }"
882 done
883 echo "int main(void) { return 0; }"
884 } | check_ld "$@" && enable $funcs && enable_safe $headers
885 }
886
887 check_cpp_condition(){
888 log check_cpp_condition "$@"
889 header=$1
890 condition=$2
891 shift 2
892 check_cpp "$@" <<EOF
893 #include <$header>
894 #if !($condition)
895 #error "unsatisfied condition: $condition"
896 #endif
897 EOF
898 }
899
900 check_lib(){
901 log check_lib "$@"
902 header="$1"
903 func="$2"
904 shift 2
905 check_header $header && check_func $func "$@" && add_extralibs "$@"
906 }
907
908 check_lib2(){
909 log check_lib2 "$@"
910 headers="$1"
911 funcs="$2"
912 shift 2
913 check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
914 }
915
916 check_pkg_config(){
917 log check_pkg_config "$@"
918 pkg="$1"
919 headers="$2"
920 funcs="$3"
921 shift 3
922 check_cmd $pkg_config --exists --print-errors $pkg || return
923 pkg_cflags=$($pkg_config --cflags $pkg)
924 pkg_libs=$($pkg_config --libs $pkg)
925 check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
926 set_safe ${pkg}_cflags $pkg_cflags &&
927 set_safe ${pkg}_libs $pkg_libs
928 }
929
930 check_exec(){
931 check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
932 }
933
934 check_exec_crash(){
935 code=$(cat)
936
937 # exit() is not async signal safe. _Exit (C99) and _exit (POSIX)
938 # are safe but may not be available everywhere. Thus we use
939 # raise(SIGTERM) instead. The check is run in a subshell so we
940 # can redirect the "Terminated" message from the shell. SIGBUS
941 # is not defined by standard C so it is used conditionally.
942
943 (check_exec "$@") >> $logfile 2>&1 <<EOF
944 #include <signal.h>
945 static void sighandler(int sig){
946 raise(SIGTERM);
947 }
948 int foo(void){
949 $code
950 }
951 int (*func_ptr)(void) = foo;
952 int main(void){
953 signal(SIGILL, sighandler);
954 signal(SIGFPE, sighandler);
955 signal(SIGSEGV, sighandler);
956 #ifdef SIGBUS
957 signal(SIGBUS, sighandler);
958 #endif
959 return func_ptr();
960 }
961 EOF
962 }
963
964 check_type(){
965 log check_type "$@"
966 headers=$1
967 type=$2
968 shift 2
969 disable_safe "$type"
970 check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
971 }
972
973 check_struct(){
974 log check_struct "$@"
975 headers=$1
976 struct=$2
977 member=$3
978 shift 3
979 disable_safe "${struct}_${member}"
980 check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
981 enable_safe "${struct}_${member}"
982 }
983
984 check_builtin(){
985 log check_builtin "$@"
986 name=$1
987 headers=$2
988 builtin=$3
989 shift 3
990 disable "$name"
991 check_code ld "$headers" "$builtin" "$@" && enable "$name"
992 }
993
994 require(){
995 name="$1"
996 header="$2"
997 func="$3"
998 shift 3
999 check_lib $header $func "$@" || die "ERROR: $name not found"
1000 }
1001
1002 require2(){
1003 name="$1"
1004 headers="$2"
1005 func="$3"
1006 shift 3
1007 check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1008 }
1009
1010 require_pkg_config(){
1011 pkg="$1"
1012 check_pkg_config "$@" || die "ERROR: $pkg not found"
1013 add_cflags $(get_safe ${pkg}_cflags)
1014 add_extralibs $(get_safe ${pkg}_libs)
1015 }
1016
1017 hostcc_e(){
1018 eval printf '%s\\n' $HOSTCC_E
1019 }
1020
1021 hostcc_o(){
1022 eval printf '%s\\n' $HOSTCC_O
1023 }
1024
1025 check_host_cc(){
1026 log check_host_cc "$@"
1027 cat > $TMPC
1028 log_file $TMPC
1029 check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1030 }
1031
1032 check_host_cpp(){
1033 log check_host_cpp "$@"
1034 cat > $TMPC
1035 log_file $TMPC
1036 check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1037 }
1038
1039 check_host_cppflags(){
1040 log check_host_cppflags "$@"
1041 check_host_cc "$@" <<EOF && append host_cppflags "$@"
1042 int x;
1043 EOF
1044 }
1045
1046 check_host_cflags(){
1047 log check_host_cflags "$@"
1048 set -- $($host_cflags_filter "$@")
1049 check_host_cc "$@" <<EOF && append host_cflags "$@"
1050 int x;
1051 EOF
1052 }
1053
1054 check_host_cpp_condition(){
1055 log check_host_cpp_condition "$@"
1056 header=$1
1057 condition=$2
1058 shift 2
1059 check_host_cpp "$@" <<EOF
1060 #include <$header>
1061 #if !($condition)
1062 #error "unsatisfied condition: $condition"
1063 #endif
1064 EOF
1065 }
1066
1067 apply(){
1068 file=$1
1069 shift
1070 "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1071 }
1072
1073 cp_if_changed(){
1074 cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1075 mkdir -p "$(dirname $2)"
1076 $cp_f "$1" "$2"
1077 }
1078
1079 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1080 # system-dependent things.
1081
1082 COMPONENT_LIST="
1083 bsfs
1084 decoders
1085 demuxers
1086 encoders
1087 filters
1088 hwaccels
1089 indevs
1090 muxers
1091 outdevs
1092 parsers
1093 protocols
1094 "
1095
1096 EXAMPLE_LIST="
1097 output_example
1098 transcode_aac_example
1099 "
1100
1101 EXTERNAL_LIBRARY_LIST="
1102 avisynth
1103 bzlib
1104 frei0r
1105 gnutls
1106 libcdio
1107 libdc1394
1108 libfaac
1109 libfdk_aac
1110 libfreetype
1111 libgsm
1112 libilbc
1113 libmp3lame
1114 libopencore_amrnb
1115 libopencore_amrwb
1116 libopencv
1117 libopenjpeg
1118 libopus
1119 libpulse
1120 librtmp
1121 libschroedinger
1122 libspeex
1123 libtheora
1124 libvo_aacenc
1125 libvo_amrwbenc
1126 libvorbis
1127 libvpx
1128 libwavpack
1129 libwebp
1130 libx264
1131 libxavs
1132 libxvid
1133 openssl
1134 x11grab
1135 zlib
1136 "
1137
1138 HWACCEL_LIST="
1139 dxva2
1140 vaapi
1141 vda
1142 vdpau
1143 "
1144 LIBRARY_LIST="
1145 avcodec
1146 avdevice
1147 avfilter
1148 avformat
1149 avresample
1150 avutil
1151 swscale
1152 "
1153
1154 PROGRAM_LIST="
1155 avconv
1156 avplay
1157 avprobe
1158 avserver
1159 "
1160
1161 CONFIG_LIST="
1162 $COMPONENT_LIST
1163 $EXAMPLE_LIST
1164 $EXTERNAL_LIBRARY_LIST
1165 $HWACCEL_LIST
1166 $LIBRARY_LIST
1167 $PROGRAM_LIST
1168 dct
1169 doc
1170 error_resilience
1171 fft
1172 gpl
1173 gray
1174 hardcoded_tables
1175 lsp
1176 lzo
1177 mdct
1178 memalign_hack
1179 neon_clobber_test
1180 network
1181 nonfree
1182 pod2man
1183 pic
1184 rdft
1185 runtime_cpudetect
1186 safe_bitstream_reader
1187 shared
1188 small
1189 sram
1190 static
1191 swscale_alpha
1192 texi2html
1193 thumb
1194 version3
1195 xmm_clobber_test
1196 "
1197
1198 THREADS_LIST='
1199 pthreads
1200 w32threads
1201 '
1202
1203 ATOMICS_LIST='
1204 atomics_gcc
1205 atomics_suncc
1206 atomics_win32
1207 '
1208
1209 ARCH_LIST='
1210 aarch64
1211 alpha
1212 arm
1213 avr32
1214 avr32_ap
1215 avr32_uc
1216 bfin
1217 ia64
1218 m68k
1219 mips
1220 mips64
1221 parisc
1222 ppc
1223 ppc64
1224 s390
1225 sh4
1226 sparc
1227 sparc64
1228 tilegx
1229 tilepro
1230 tomi
1231 x86
1232 x86_32
1233 x86_64
1234 '
1235
1236 ARCH_EXT_LIST_ARM='
1237 armv5te
1238 armv6
1239 armv6t2
1240 neon
1241 vfp
1242 vfpv3
1243 '
1244
1245 ARCH_EXT_LIST_X86='
1246 amd3dnow
1247 amd3dnowext
1248 avx
1249 avx2
1250 fma4
1251 i686
1252 mmx
1253 mmxext
1254 sse
1255 sse2
1256 sse3
1257 sse4
1258 sse42
1259 ssse3
1260 '
1261
1262 ARCH_EXT_LIST="
1263 $ARCH_EXT_LIST_ARM
1264 $ARCH_EXT_LIST_X86
1265 altivec
1266 ppc4xx
1267 vis
1268 "
1269
1270 HAVE_LIST_CMDLINE='
1271 inline_asm
1272 symver
1273 yasm
1274 '
1275
1276 HAVE_LIST_PUB='
1277 bigendian
1278 fast_unaligned
1279 '
1280
1281 MATH_FUNCS="
1282 atanf
1283 atan2f
1284 cbrtf
1285 cosf
1286 exp2
1287 exp2f
1288 expf
1289 isinf
1290 isnan
1291 ldexpf
1292 llrint
1293 llrintf
1294 log2
1295 log2f
1296 log10f
1297 lrint
1298 lrintf
1299 powf
1300 rint
1301 round
1302 roundf
1303 sinf
1304 trunc
1305 truncf
1306 "
1307
1308 HAVE_LIST="
1309 $ARCH_EXT_LIST
1310 $(add_suffix _external $ARCH_EXT_LIST)
1311 $(add_suffix _inline $ARCH_EXT_LIST)
1312 $HAVE_LIST_CMDLINE
1313 $HAVE_LIST_PUB
1314 $THREADS_LIST
1315 $ATOMICS_LIST
1316 $MATH_FUNCS
1317 aligned_malloc
1318 aligned_stack
1319 alsa_asoundlib_h
1320 altivec_h
1321 arpa_inet_h
1322 asm_mod_q
1323 asm_mod_y
1324 atomic_cas_ptr
1325 atomics_native
1326 attribute_may_alias
1327 attribute_packed
1328 cdio_paranoia_h
1329 cdio_paranoia_paranoia_h
1330 closesocket
1331 CommandLineToArgvW
1332 cpunop
1333 CryptGenRandom
1334 dcbzl
1335 dev_bktr_ioctl_bt848_h
1336 dev_bktr_ioctl_meteor_h
1337 dev_ic_bt8xx_h
1338 dev_video_bktr_ioctl_bt848_h
1339 dev_video_meteor_ioctl_meteor_h
1340 direct_h
1341 dlfcn_h
1342 dlopen
1343 dos_paths
1344 dxva_h
1345 ebp_available
1346 ebx_available
1347 fast_64bit
1348 fast_clz
1349 fast_cmov
1350 fcntl
1351 fork
1352 getaddrinfo
1353 gethrtime
1354 getopt
1355 GetProcessAffinityMask
1356 GetProcessMemoryInfo
1357 GetProcessTimes
1358 GetSystemTimeAsFileTime
1359 getrusage
1360 getservbyport
1361 gettimeofday
1362 gnu_as
1363 gsm_h
1364 ibm_asm
1365 inet_aton
1366 io_h
1367 inline_asm_labels
1368 isatty
1369 jack_port_get_latency_range
1370 ldbrx
1371 libc_msvcrt
1372 libdc1394_1
1373 libdc1394_2
1374 local_aligned_16
1375 local_aligned_8
1376 localtime_r
1377 loongson
1378 machine_ioctl_bt848_h
1379 machine_ioctl_meteor_h
1380 machine_rw_barrier
1381 malloc_h
1382 MapViewOfFile
1383 memalign
1384 MemoryBarrier
1385 mkstemp
1386 mm_empty
1387 mmap
1388 mprotect
1389 nanosleep
1390 poll_h
1391 posix_memalign
1392 pragma_deprecated
1393 rdtsc
1394 sched_getaffinity
1395 sdl
1396 SetConsoleTextAttribute
1397 setmode
1398 setrlimit
1399 Sleep
1400 sndio_h
1401 socklen_t
1402 soundcard_h
1403 strerror_r
1404 strptime
1405 strtok_r
1406 struct_addrinfo
1407 struct_group_source_req
1408 struct_ip_mreq_source
1409 struct_ipv6_mreq
1410 struct_pollfd
1411 struct_rusage_ru_maxrss
1412 struct_sockaddr_in6
1413 struct_sockaddr_sa_len
1414 struct_sockaddr_storage
1415 struct_v4l2_frmivalenum_discrete
1416 symver_asm_label
1417 symver_gnu_asm
1418 sync_val_compare_and_swap
1419 sysconf
1420 sysctl
1421 sys_mman_h
1422 sys_param_h
1423 sys_resource_h
1424 sys_select_h
1425 sys_soundcard_h
1426 sys_time_h
1427 sys_un_h
1428 sys_videoio_h
1429 threads
1430 unistd_h
1431 usleep
1432 vdpau_x11
1433 vfp_args
1434 VirtualAlloc
1435 windows_h
1436 winsock2_h
1437 xform_asm
1438 xlib
1439 xmm_clobbers
1440 "
1441
1442 # options emitted with CONFIG_ prefix but not available on the command line
1443 CONFIG_EXTRA="
1444 aandcttables
1445 ac3dsp
1446 audio_frame_queue
1447 dsputil
1448 gcrypt
1449 golomb
1450 gplv3
1451 h263dsp
1452 h264chroma
1453 h264dsp
1454 h264pred
1455 h264qpel
1456 hpeldsp
1457 huffman
1458 intrax8
1459 lgplv3
1460 lpc
1461 mpegaudio
1462 mpegaudiodsp
1463 mpegvideo
1464 mpegvideoenc
1465 nettle
1466 rangecoder
1467 riffdec
1468 riffenc
1469 rtpdec
1470 rtpenc_chain
1471 sinewin
1472 videodsp
1473 vp3dsp
1474 "
1475
1476 CMDLINE_SELECT="
1477 $ARCH_EXT_LIST
1478 $CONFIG_LIST
1479 $HAVE_LIST_CMDLINE
1480 $THREADS_LIST
1481 asm
1482 cross_compile
1483 debug
1484 extra_warnings
1485 logging
1486 lto
1487 optimizations
1488 "
1489
1490 PATHS_LIST='
1491 bindir
1492 datadir
1493 docdir
1494 incdir
1495 libdir
1496 mandir
1497 prefix
1498 shlibdir
1499 '
1500
1501 CMDLINE_SET="
1502 $PATHS_LIST
1503 ar
1504 arch
1505 as
1506 build_suffix
1507 cc
1508 cpu
1509 cross_prefix
1510 dep_cc
1511 extra_version
1512 host_cc
1513 host_cflags
1514 host_ld
1515 host_ldflags
1516 host_libs
1517 host_os
1518 ld
1519 logfile
1520 malloc_prefix
1521 nm
1522 optflags
1523 pkg_config
1524 random_seed
1525 samples
1526 sysinclude
1527 sysroot
1528 target_exec
1529 target_os
1530 target_path
1531 target_samples
1532 toolchain
1533 "
1534
1535 CMDLINE_APPEND="
1536 extra_cflags
1537 host_cppflags
1538 "
1539
1540 # code dependency declarations
1541
1542 # architecture extensions
1543
1544 armv5te_deps="arm"
1545 armv6_deps="arm"
1546 armv6t2_deps="arm"
1547 neon_deps_any="aarch64 arm"
1548 vfp_deps_any="aarch64 arm"
1549 vfpv3_deps="vfp"
1550
1551 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1552
1553 altivec_deps="ppc"
1554 ppc4xx_deps="ppc"
1555
1556 vis_deps="sparc"
1557
1558 cpunop_deps="i686"
1559 x86_64_select="i686"
1560 x86_64_suggest="fast_cmov"
1561
1562 amd3dnow_deps="mmx"
1563 amd3dnowext_deps="amd3dnow"
1564 mmx_deps="x86"
1565 mmxext_deps="mmx"
1566 sse_deps="mmxext"
1567 sse2_deps="sse"
1568 sse3_deps="sse2"
1569 ssse3_deps="sse3"
1570 sse4_deps="ssse3"
1571 sse42_deps="sse4"
1572 avx_deps="sse42"
1573 fma4_deps="avx"
1574 avx2_deps="avx"
1575
1576 mmx_external_deps="yasm"
1577 mmx_inline_deps="inline_asm"
1578 mmx_suggest="mmx_external mmx_inline"
1579
1580 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1581 eval dep=\$${ext}_deps
1582 eval ${ext}_external_deps='"${dep}_external"'
1583 eval ${ext}_inline_deps='"${dep}_inline"'
1584 eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1585 done
1586
1587 aligned_stack_if_any="aarch64 ppc x86"
1588 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1589 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1590 fast_unaligned_if_any="aarch64 ppc x86"
1591
1592 need_memalign="altivec neon sse"
1593
1594 # system capabilities
1595 log2_deps="!libc_msvcrt"
1596
1597 symver_if_any="symver_asm_label symver_gnu_asm"
1598
1599 # threading support
1600 atomics_gcc_if="sync_val_compare_and_swap"
1601 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1602 atomics_win32_if="MemoryBarrier"
1603 atomics_native_if_any="$ATOMICS_LIST"
1604 threads_if_any="$THREADS_LIST"
1605
1606 # subsystems
1607 dct_select="rdft"
1608 error_resilience_select="dsputil"
1609 lpc_select="dsputil"
1610 mdct_select="fft"
1611 rdft_select="fft"
1612 mpegaudio_select="mpegaudiodsp"
1613 mpegaudiodsp_select="dct"
1614 mpegvideo_select="dsputil hpeldsp videodsp"
1615 mpegvideoenc_select="mpegvideo"
1616
1617 # decoders / encoders
1618 aac_decoder_select="mdct sinewin"
1619 aac_encoder_select="audio_frame_queue mdct sinewin"
1620 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1621 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1622 ac3_encoder_select="mdct ac3dsp dsputil"
1623 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1624 aic_decoder_select="dsputil golomb"
1625 alac_encoder_select="lpc"
1626 als_decoder_select="dsputil"
1627 amrnb_decoder_select="lsp"
1628 amrwb_decoder_select="lsp"
1629 amv_decoder_select="dsputil hpeldsp"
1630 ape_decoder_select="dsputil"
1631 asv1_decoder_select="dsputil"
1632 asv1_encoder_select="dsputil"
1633 asv2_decoder_select="dsputil"
1634 asv2_encoder_select="dsputil"
1635 atrac1_decoder_select="mdct sinewin"
1636 atrac3_decoder_select="mdct"
1637 atrac3p_decoder_select="mdct sinewin"
1638 bink_decoder_select="dsputil hpeldsp"
1639 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1640 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1641 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1642 cllc_decoder_select="dsputil"
1643 comfortnoise_encoder_select="lpc"
1644 cook_decoder_select="dsputil mdct sinewin"
1645 cscd_decoder_select="lzo"
1646 cscd_decoder_suggest="zlib"
1647 dca_decoder_select="mdct"
1648 dnxhd_decoder_select="dsputil"
1649 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1650 dvvideo_decoder_select="dsputil"
1651 dvvideo_encoder_select="dsputil"
1652 dxa_decoder_deps="zlib"
1653 eac3_decoder_select="ac3_decoder"
1654 eac3_encoder_select="ac3_encoder"
1655 eamad_decoder_select="aandcttables dsputil mpegvideo"
1656 eatgq_decoder_select="aandcttables dsputil"
1657 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1658 ffv1_decoder_select="dsputil golomb rangecoder"
1659 ffv1_encoder_select="dsputil rangecoder"
1660 ffvhuff_decoder_select="dsputil"
1661 ffvhuff_encoder_select="dsputil huffman"
1662 flac_decoder_select="golomb"
1663 flac_encoder_select="dsputil golomb lpc"
1664 flashsv_decoder_deps="zlib"
1665 flashsv_encoder_deps="zlib"
1666 flashsv2_decoder_deps="zlib"
1667 flv_decoder_select="h263_decoder"
1668 flv_encoder_select="h263_encoder"
1669 fourxm_decoder_select="dsputil"
1670 fraps_decoder_select="dsputil huffman"
1671 g2m_decoder_deps="zlib"
1672 g2m_decoder_select="dsputil"
1673 h261_decoder_select="error_resilience mpegvideo"
1674 h261_encoder_select="aandcttables mpegvideoenc"
1675 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1676 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1677 h263i_decoder_select="h263_decoder"
1678 h263p_encoder_select="h263_encoder"
1679 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1680 h264_decoder_suggest="error_resilience"
1681 hevc_decoder_select="dsputil golomb videodsp"
1682 huffyuv_decoder_select="dsputil"
1683 huffyuv_encoder_select="dsputil huffman"
1684 iac_decoder_select="dsputil fft mdct sinewin"
1685 imc_decoder_select="dsputil fft mdct sinewin"
1686 indeo3_decoder_select="hpeldsp"
1687 interplay_video_decoder_select="hpeldsp"
1688 jpegls_decoder_select="dsputil golomb hpeldsp"
1689 jpegls_encoder_select="golomb"
1690 jv_decoder_select="dsputil"
1691 lagarith_decoder_select="dsputil"
1692 ljpeg_encoder_select="aandcttables mpegvideoenc"
1693 loco_decoder_select="golomb"
1694 mdec_decoder_select="dsputil error_resilience mpegvideo"
1695 metasound_decoder_select="lsp mdct sinewin"
1696 mimic_decoder_select="dsputil hpeldsp"
1697 mjpeg_decoder_select="dsputil hpeldsp"
1698 mjpegb_decoder_select="dsputil hpeldsp"
1699 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1700 mlp_decoder_select="dsputil mlp_parser"
1701 motionpixels_decoder_select="dsputil"
1702 mp1_decoder_select="mpegaudio"
1703 mp1float_decoder_select="mpegaudio"
1704 mp2_decoder_select="mpegaudio"
1705 mp2float_decoder_select="mpegaudio"
1706 mp3_decoder_select="mpegaudio"
1707 mp3adu_decoder_select="mpegaudio"
1708 mp3adufloat_decoder_select="mpegaudio"
1709 mp3float_decoder_select="mpegaudio"
1710 mp3on4_decoder_select="mpegaudio"
1711 mp3on4float_decoder_select="mpegaudio"
1712 mpc7_decoder_select="dsputil mpegaudiodsp"
1713 mpc8_decoder_select="dsputil mpegaudiodsp"
1714 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1715 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1716 mpeg1video_decoder_select="error_resilience mpegvideo"
1717 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1718 mpeg2video_decoder_select="error_resilience mpegvideo"
1719 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1720 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1721 mpeg4_encoder_select="h263_encoder"
1722 msmpeg4v1_decoder_select="h263_decoder"
1723 msmpeg4v2_decoder_select="h263_decoder"
1724 msmpeg4v2_encoder_select="h263_encoder"
1725 msmpeg4v3_decoder_select="h263_decoder"
1726 msmpeg4v3_encoder_select="h263_encoder"
1727 mss2_decoder_select="error_resilience vc1_decoder"
1728 mxpeg_decoder_select="dsputil hpeldsp"
1729 nellymoser_decoder_select="mdct sinewin"
1730 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1731 nuv_decoder_select="dsputil lzo"
1732 png_decoder_deps="zlib"
1733 png_decoder_select="dsputil"
1734 png_encoder_deps="zlib"
1735 png_encoder_select="dsputil"
1736 prores_decoder_select="dsputil"
1737 prores_encoder_select="dsputil"
1738 qcelp_decoder_select="lsp"
1739 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1740 ra_144_encoder_select="audio_frame_queue lpc"
1741 ralf_decoder_select="golomb"
1742 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1743 rv10_encoder_select="h263_encoder"
1744 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1745 rv20_encoder_select="h263_encoder"
1746 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1747 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1748 shorten_decoder_select="golomb"
1749 sipr_decoder_select="lsp"
1750 sp5x_decoder_select="dsputil hpeldsp"
1751 svq1_decoder_select="hpeldsp"
1752 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1753 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1754 svq3_decoder_suggest="error_resilience zlib"
1755 tak_decoder_select="dsputil"
1756 theora_decoder_select="vp3_decoder"
1757 tiff_decoder_suggest="zlib"
1758 tiff_encoder_suggest="zlib"
1759 thp_decoder_select="dsputil hpeldsp"
1760 truehd_decoder_select="mlp_decoder"
1761 truemotion2_decoder_select="dsputil"
1762 truespeech_decoder_select="dsputil"
1763 tscc_decoder_deps="zlib"
1764 twinvq_decoder_select="mdct lsp sinewin"
1765 utvideo_decoder_select="dsputil"
1766 utvideo_encoder_select="dsputil huffman"
1767 vble_decoder_select="dsputil"
1768 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1769 vc1image_decoder_select="vc1_decoder"
1770 vorbis_decoder_select="mdct"
1771 vorbis_encoder_select="mdct"
1772 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1773 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1774 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1775 vp6a_decoder_select="vp6_decoder"
1776 vp6f_decoder_select="vp6_decoder"
1777 vp8_decoder_select="h264pred videodsp"
1778 vp9_decoder_select="videodsp"
1779 webp_decoder_select="vp8_decoder"
1780 wmapro_decoder_select="mdct sinewin"
1781 wmav1_decoder_select="mdct sinewin"
1782 wmav1_encoder_select="mdct sinewin"
1783 wmav2_decoder_select="mdct sinewin"
1784 wmav2_encoder_select="mdct sinewin"
1785 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1786 wmv1_decoder_select="h263_decoder"
1787 wmv1_encoder_select="h263_encoder"
1788 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1789 wmv2_encoder_select="h263_encoder"
1790 wmv3_decoder_select="vc1_decoder"
1791 wmv3image_decoder_select="wmv3_decoder"
1792 zerocodec_decoder_deps="zlib"
1793 zlib_decoder_deps="zlib"
1794 zlib_encoder_deps="zlib"
1795 zmbv_decoder_deps="zlib"
1796 zmbv_encoder_deps="zlib"
1797
1798 # hardware accelerators
1799 dxva2_deps="dxva2api_h"
1800 vaapi_deps="va_va_h"
1801 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1802 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1803 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1804
1805 h263_vaapi_hwaccel_deps="vaapi"
1806 h263_vaapi_hwaccel_select="h263_decoder"
1807 h263_vdpau_hwaccel_deps="vdpau"
1808 h263_vdpau_hwaccel_select="h263_decoder"
1809 h264_dxva2_hwaccel_deps="dxva2"
1810 h264_dxva2_hwaccel_select="h264_decoder"
1811 h264_vaapi_hwaccel_deps="vaapi"
1812 h264_vaapi_hwaccel_select="h264_decoder"
1813 h264_vda_hwaccel_deps="vda"
1814 h264_vda_hwaccel_select="h264_decoder"
1815 h264_vdpau_hwaccel_deps="vdpau"
1816 h264_vdpau_hwaccel_select="h264_decoder"
1817 mpeg1_vdpau_hwaccel_deps="vdpau"
1818 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1819 mpeg2_dxva2_hwaccel_deps="dxva2"
1820 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1821 mpeg2_vaapi_hwaccel_deps="vaapi"
1822 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1823 mpeg2_vdpau_hwaccel_deps="vdpau"
1824 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1825 mpeg4_vaapi_hwaccel_deps="vaapi"
1826 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1827 mpeg4_vdpau_hwaccel_deps="vdpau"
1828 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1829 vc1_dxva2_hwaccel_deps="dxva2"
1830 vc1_dxva2_hwaccel_select="vc1_decoder"
1831 vc1_vaapi_hwaccel_deps="vaapi"
1832 vc1_vaapi_hwaccel_select="vc1_decoder"
1833 vc1_vdpau_hwaccel_deps="vdpau"
1834 vc1_vdpau_hwaccel_select="vc1_decoder"
1835 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1836 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1837 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1838
1839 # parsers
1840 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1841 mpeg4video_parser_select="error_resilience mpegvideo"
1842 mpegvideo_parser_select="error_resilience mpegvideo"
1843 vc1_parser_select="mpegvideo"
1844
1845 # external libraries
1846 libfaac_encoder_deps="libfaac"
1847 libfaac_encoder_select="audio_frame_queue"
1848 libfdk_aac_decoder_deps="libfdk_aac"
1849 libfdk_aac_encoder_deps="libfdk_aac"
1850 libfdk_aac_encoder_select="audio_frame_queue"
1851 libgsm_decoder_deps="libgsm"
1852 libgsm_encoder_deps="libgsm"
1853 libgsm_ms_decoder_deps="libgsm"
1854 libgsm_ms_encoder_deps="libgsm"
1855 libilbc_decoder_deps="libilbc"
1856 libilbc_encoder_deps="libilbc"
1857 libmp3lame_encoder_deps="libmp3lame"
1858 libmp3lame_encoder_select="audio_frame_queue"
1859 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1860 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1861 libopencore_amrnb_encoder_select="audio_frame_queue"
1862 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1863 libopenjpeg_decoder_deps="libopenjpeg"
1864 libopenjpeg_encoder_deps="libopenjpeg"
1865 libopus_decoder_deps="libopus"
1866 libopus_encoder_deps="libopus"
1867 libopus_encoder_select="audio_frame_queue"
1868 libschroedinger_decoder_deps="libschroedinger"
1869 libschroedinger_encoder_deps="libschroedinger"
1870 libspeex_decoder_deps="libspeex"
1871 libspeex_encoder_deps="libspeex"
1872 libspeex_encoder_select="audio_frame_queue"
1873 libtheora_encoder_deps="libtheora"
1874 libvo_aacenc_encoder_deps="libvo_aacenc"
1875 libvo_aacenc_encoder_select="audio_frame_queue"
1876 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1877 libvorbis_encoder_deps="libvorbis"
1878 libvorbis_encoder_select="audio_frame_queue"
1879 libvpx_vp8_decoder_deps="libvpx"
1880 libvpx_vp8_encoder_deps="libvpx"
1881 libvpx_vp9_decoder_deps="libvpx"
1882 libvpx_vp9_encoder_deps="libvpx"
1883 libwavpack_encoder_deps="libwavpack"
1884 libwebp_encoder_deps="libwebp"
1885 libx264_encoder_deps="libx264"
1886 libxavs_encoder_deps="libxavs"
1887 libxvid_encoder_deps="libxvid"
1888
1889 # demuxers / muxers
1890 ac3_demuxer_select="ac3_parser"
1891 asf_demuxer_select="riffdec"
1892 asf_muxer_select="riffenc"
1893 asf_stream_muxer_select="asf_muxer"
1894 avi_demuxer_select="riffdec"
1895 avi_muxer_select="riffenc"
1896 avisynth_demuxer_deps="avisynth"
1897 avisynth_demuxer_select="riffdec"
1898 caf_demuxer_select="riffdec"
1899 dirac_demuxer_select="dirac_parser"
1900 dxa_demuxer_select="riffdec"
1901 eac3_demuxer_select="ac3_parser"
1902 f4v_muxer_select="mov_muxer"
1903 flac_demuxer_select="flac_parser"
1904 hds_muxer_select="flv_muxer"
1905 hls_muxer_select="mpegts_muxer"
1906 ipod_muxer_select="mov_muxer"
1907 ismv_muxer_select="mov_muxer"
1908 matroska_audio_muxer_select="matroska_muxer"
1909 matroska_demuxer_select="riffdec"
1910 matroska_demuxer_suggest="bzlib lzo zlib"
1911 matroska_muxer_select="riffenc"
1912 mmf_muxer_select="riffenc"
1913 mov_demuxer_select="riffdec"
1914 mov_demuxer_suggest="zlib"
1915 mov_muxer_select="riffenc rtpenc_chain"
1916 mp3_demuxer_select="mpegaudio_parser"
1917 mp4_muxer_select="mov_muxer"
1918 mpegts_muxer_select="adts_muxer latm_muxer"
1919 mpegtsraw_demuxer_select="mpegts_demuxer"
1920 mxf_d10_muxer_select="mxf_muxer"
1921 nut_muxer_select="riffenc"
1922 nuv_demuxer_select="riffdec"
1923 ogg_demuxer_select="golomb"
1924 psp_muxer_select="mov_muxer"
1925 rtp_demuxer_select="sdp_demuxer"
1926 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1927 rtsp_demuxer_select="http_protocol rtpdec"
1928 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1929 sap_demuxer_select="sdp_demuxer"
1930 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1931 sdp_demuxer_select="rtpdec"
1932 smoothstreaming_muxer_select="ismv_muxer"
1933 spdif_muxer_select="aac_parser"
1934 tak_demuxer_select="tak_parser"
1935 tg2_muxer_select="mov_muxer"
1936 tgp_muxer_select="mov_muxer"
1937 w64_demuxer_select="wav_demuxer"
1938 wav_demuxer_select="riffdec"
1939 wav_muxer_select="riffenc"
1940 webm_muxer_select="riffenc"
1941 wtv_demuxer_select="riffdec"
1942 xmv_demuxer_select="riffdec"
1943 xwma_demuxer_select="riffdec"
1944
1945 # indevs / outdevs
1946 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1947 alsa_outdev_deps="alsa_asoundlib_h"
1948 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1949 dv1394_indev_deps="dv1394"
1950 dv1394_indev_select="dv_demuxer"
1951 fbdev_indev_deps="linux_fb_h"
1952 jack_indev_deps="jack_jack_h pthreads"
1953 libcdio_indev_deps="libcdio"
1954 libdc1394_indev_deps="libdc1394"
1955 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1956 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1957 pulse_indev_deps="libpulse"
1958 sndio_indev_deps="sndio_h"
1959 sndio_outdev_deps="sndio_h"
1960 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1961 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1962 vfwcap_indev_extralibs="-lavicap32"
1963 x11grab_indev_deps="x11grab XShmCreateImage"
1964
1965 # protocols
1966 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1967 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1968 ffrtmpcrypt_protocol_select="tcp_protocol"
1969 ffrtmphttp_protocol_deps="!librtmp_protocol"
1970 ffrtmphttp_protocol_select="http_protocol"
1971 gopher_protocol_select="network"
1972 httpproxy_protocol_select="tcp_protocol"
1973 http_protocol_select="tcp_protocol"
1974 https_protocol_select="tls_protocol"
1975 librtmp_protocol_deps="librtmp"
1976 librtmpe_protocol_deps="librtmp"
1977 librtmps_protocol_deps="librtmp"
1978 librtmpt_protocol_deps="librtmp"
1979 librtmpte_protocol_deps="librtmp"
1980 mmsh_protocol_select="http_protocol"
1981 mmst_protocol_select="network"
1982 rtmp_protocol_deps="!librtmp_protocol"
1983 rtmp_protocol_select="tcp_protocol"
1984 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1985 rtmps_protocol_deps="!librtmp_protocol"
1986 rtmps_protocol_select="tls_protocol"
1987 rtmpt_protocol_select="ffrtmphttp_protocol"
1988 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1989 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1990 rtp_protocol_select="udp_protocol"
1991 sctp_protocol_deps="struct_sctp_event_subscribe"
1992 sctp_protocol_select="network"
1993 srtp_protocol_select="rtp_protocol"
1994 tcp_protocol_select="network"
1995 tls_protocol_deps_any="openssl gnutls"
1996 tls_protocol_select="tcp_protocol"
1997 udp_protocol_select="network"
1998 unix_protocol_deps="sys_un_h"
1999 unix_protocol_select="network"
2000
2001 # filters
2002 blackframe_filter_deps="gpl"
2003 boxblur_filter_deps="gpl"
2004 cropdetect_filter_deps="gpl"
2005 delogo_filter_deps="gpl"
2006 drawtext_filter_deps="libfreetype"
2007 frei0r_filter_deps="frei0r dlopen strtok_r"
2008 frei0r_filter_extralibs='$ldl'
2009 frei0r_src_filter_deps="frei0r dlopen strtok_r"
2010 frei0r_src_filter_extralibs='$ldl'
2011 hqdn3d_filter_deps="gpl"
2012 interlace_filter_deps="gpl"
2013 resample_filter_deps="avresample"
2014 ocv_filter_deps="libopencv"
2015 scale_filter_deps="swscale"
2016
2017 # examples
2018 output_example_deps="avcodec avformat avutil swscale"
2019 transcode_aac_example_deps="avcodec avformat avresample"
2020
2021 # libraries
2022 avcodec_deps="avutil"
2023 avdevice_deps="avutil avcodec avformat"
2024 avfilter_deps="avutil"
2025 avformat_deps="avutil avcodec"
2026 avresample_deps="avutil"
2027 swscale_deps="avutil"
2028
2029 # programs
2030 avconv_deps="avcodec avfilter avformat avresample swscale"
2031 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2032 fps_filter null_filter resample_filter scale_filter
2033 setpts_filter trim_filter"
2034 avplay_deps="avcodec avformat avresample swscale sdl"
2035 avplay_select="rdft"
2036 avprobe_deps="avcodec avformat"
2037 avserver_deps="avformat fork !shared"
2038 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2039 avserver_extralibs='$ldl'
2040
2041 # documentation
2042 pod2man_deps="doc"
2043 texi2html_deps="doc"
2044
2045 # default parameters
2046
2047 logfile="config.log"
2048
2049 # installation paths
2050 prefix_default="/usr/local"
2051 bindir_default='${prefix}/bin'
2052 datadir_default='${prefix}/share/avconv'
2053 docdir_default='${prefix}/share/doc/libav'
2054 incdir_default='${prefix}/include'
2055 libdir_default='${prefix}/lib'
2056 mandir_default='${prefix}/share/man'
2057 shlibdir_default="$libdir_default"
2058
2059 # toolchain
2060 ar_default="ar"
2061 cc_default="gcc"
2062 host_cc_default="gcc"
2063 cp_f="cp -f"
2064 ln_s="ln -s -f"
2065 nm_default="nm -g"
2066 objformat="elf"
2067 pkg_config_default=pkg-config
2068 ranlib="ranlib"
2069 strip="strip"
2070 yasmexe="yasm"
2071
2072 nogas=":"
2073
2074 # machine
2075 arch_default=$(uname -m)
2076 cpu="generic"
2077
2078 # OS
2079 target_os_default=$(tolower $(uname -s))
2080 host_os=$target_os_default
2081
2082 # configurable options
2083 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2084
2085 enable asm
2086 enable debug
2087 enable doc
2088 enable optimizations
2089 enable safe_bitstream_reader
2090 enable static
2091 enable swscale_alpha
2092
2093 # By default, enable only those hwaccels that have no external dependencies.
2094 enable dxva2 vdpau
2095
2096 # build settings
2097 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2098 LIBPREF="lib"
2099 LIBSUF=".a"
2100 FULLNAME='$(NAME)$(BUILDSUF)'
2101 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2102 SLIBPREF="lib"
2103 SLIBSUF=".so"
2104 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2105 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2106 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2107 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2108 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2109 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2110
2111 asflags_filter=echo
2112 cflags_filter=echo
2113 ldflags_filter=echo
2114
2115 AS_C='-c'
2116 AS_O='-o $@'
2117 CC_C='-c'
2118 CC_E='-E -o $@'
2119 CC_O='-o $@'
2120 LD_O='-o $@'
2121 LD_LIB='-l%'
2122 LD_PATH='-L'
2123 HOSTCC_C='-c'
2124 HOSTCC_E='-E -o $@'
2125 HOSTCC_O='-o $@'
2126 HOSTLD_O='-o $@'
2127
2128 host_libs='-lm'
2129 host_cflags_filter=echo
2130 host_ldflags_filter=echo
2131
2132 target_path='$(CURDIR)'
2133
2134 # since the object filename is not given with the -MM flag, the compiler
2135 # is only able to print the basename, and we must add the path ourselves
2136 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2137 DEPFLAGS='-MM'
2138
2139 # find source path
2140 if test -f configure; then
2141 source_path=.
2142 else
2143 source_path=$(cd $(dirname "$0"); pwd)
2144 echo "$source_path" | grep -q '[[:blank:]]' &&
2145 die "Out of tree builds are impossible with whitespace in source path."
2146 test -e "$source_path/config.h" &&
2147 die "Out of tree builds are impossible with config.h in source dir."
2148 fi
2149
2150 for v in "$@"; do
2151 r=${v#*=}
2152 l=${v%"$r"}
2153 r=$(sh_quote "$r")
2154 LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2155 done
2156
2157 find_things(){
2158 thing=$1
2159 pattern=$2
2160 file=$source_path/$3
2161 sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2162 }
2163
2164 ENCODER_LIST=$(find_things encoder ENC libavcodec/allcodecs.c)
2165 DECODER_LIST=$(find_things decoder DEC libavcodec/allcodecs.c)
2166 HWACCEL_LIST=$(find_things hwaccel HWACCEL libavcodec/allcodecs.c)
2167 PARSER_LIST=$(find_things parser PARSER libavcodec/allcodecs.c)
2168 BSF_LIST=$(find_things bsf BSF libavcodec/allcodecs.c)
2169 MUXER_LIST=$(find_things muxer _MUX libavformat/allformats.c)
2170 DEMUXER_LIST=$(find_things demuxer DEMUX libavformat/allformats.c)
2171 OUTDEV_LIST=$(find_things outdev OUTDEV libavdevice/alldevices.c)
2172 INDEV_LIST=$(find_things indev _IN libavdevice/alldevices.c)
2173 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2174 FILTER_LIST=$(find_things filter FILTER libavfilter/allfilters.c)
2175
2176 ALL_COMPONENTS="
2177 $BSF_LIST
2178 $DECODER_LIST
2179 $DEMUXER_LIST
2180 $ENCODER_LIST
2181 $FILTER_LIST
2182 $HWACCEL_LIST
2183 $INDEV_LIST
2184 $MUXER_LIST
2185 $OUTDEV_LIST
2186 $PARSER_LIST
2187 $PROTOCOL_LIST
2188 "
2189
2190 for n in $COMPONENT_LIST; do
2191 v=$(toupper ${n%s})_LIST
2192 eval enable \$$v
2193 eval ${n}_if_any="\$$v"
2194 done
2195
2196 enable $ARCH_EXT_LIST
2197
2198 die_unknown(){
2199 echo "Unknown option \"$1\"."
2200 echo "See $0 --help for available options."
2201 exit 1
2202 }
2203
2204 print_3_columns() {
2205 cat | tr ' ' '\n' | sort | pr -r -3 -t
2206 }
2207
2208 show_list() {
2209 suffix=_$1
2210 shift
2211 echo $* | sed s/$suffix//g | print_3_columns
2212 exit 0
2213 }
2214
2215 rand_list(){
2216 IFS=', '
2217 set -- $*
2218 unset IFS
2219 for thing; do
2220 comp=${thing%:*}
2221 prob=${thing#$comp}
2222 prob=${prob#:}
2223 is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2224 echo "prob ${prob:-0.5}"
2225 printf '%s\n' $comp
2226 done
2227 }
2228
2229 do_random(){
2230 action=$1
2231 shift
2232 random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2233 $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2234 }
2235
2236 for opt do
2237 optval="${opt#*=}"
2238 case "$opt" in
2239 --extra-ldflags=*)
2240 add_ldflags $optval
2241 ;;
2242 --extra-libs=*)
2243 add_extralibs $optval
2244 ;;
2245 --disable-devices)
2246 disable $INDEV_LIST $OUTDEV_LIST
2247 ;;
2248 --enable-debug=*)
2249 debuglevel="$optval"
2250 ;;
2251 --disable-programs)
2252 disable $PROGRAM_LIST
2253 ;;
2254 --disable-everything)
2255 map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2256 ;;
2257 --disable-all)
2258 map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2259 disable $LIBRARY_LIST $PROGRAM_LIST doc
2260 ;;
2261 --enable-random|--disable-random)
2262 action=${opt%%-random}
2263 do_random ${action#--} $COMPONENT_LIST
2264 ;;
2265 --enable-random=*|--disable-random=*)
2266 action=${opt%%-random=*}
2267 do_random ${action#--} $optval
2268 ;;
2269 --enable-*=*|--disable-*=*)
2270 eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2271 is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2272 eval list=\$$(toupper $thing)_LIST
2273 name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2274 $action $(filter "$name" $list)
2275 ;;
2276 --enable-?*|--disable-?*)
2277 eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2278 if is_in $option $COMPONENT_LIST; then
2279 test $action = disable && action=unset
2280 eval $action \$$(toupper ${option%s})_LIST
2281 elif is_in $option $CMDLINE_SELECT; then
2282 $action $option
2283 else
2284 die_unknown $opt
2285 fi
2286 ;;
2287 --list-*)
2288 NAME="${opt#--list-}"
2289 is_in $NAME $COMPONENT_LIST || die_unknown $opt
2290 NAME=${NAME%s}
2291 eval show_list $NAME \$$(toupper $NAME)_LIST
2292 ;;
2293 --help|-h) show_help
2294 ;;
2295 *)
2296 optname="${opt%%=*}"
2297 optname="${optname#--}"
2298 optname=$(echo "$optname" | sed 's/-/_/g')
2299 if is_in $optname $CMDLINE_SET; then
2300 eval $optname='$optval'
2301 elif is_in $optname $CMDLINE_APPEND; then
2302 append $optname "$optval"
2303 else
2304 die_unknown $opt
2305 fi
2306 ;;
2307 esac
2308 done
2309
2310 disabled logging && logfile=/dev/null
2311
2312 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2313 set >> $logfile
2314
2315 test -n "$cross_prefix" && enable cross_compile
2316
2317 if enabled cross_compile; then
2318 test -n "$arch" && test -n "$target_os" ||
2319 die "Must specify target arch and OS when cross-compiling"
2320 fi
2321
2322 ar_default="${cross_prefix}${ar_default}"
2323 cc_default="${cross_prefix}${cc_default}"
2324 nm_default="${cross_prefix}${nm_default}"
2325 pkg_config_default="${cross_prefix}${pkg_config_default}"
2326 ranlib="${cross_prefix}${ranlib}"
2327 strip="${cross_prefix}${strip}"
2328
2329 sysinclude_default="${sysroot}/usr/include"
2330
2331 case "$toolchain" in
2332 clang-asan)
2333 cc_default="clang"
2334 add_cflags -fsanitize=address
2335 add_ldflags -fsanitize=address
2336 ;;
2337 clang-tsan)
2338 cc_default="clang"
2339 add_cflags -fsanitize=thread -pie
2340 add_ldflags -fsanitize=thread -pie
2341 ;;
2342 gcc-asan)
2343 cc_default="gcc"
2344 add_cflags -fsanitize=address
2345 add_ldflags -fsanitize=address
2346 ;;
2347 gcc-tsan)
2348 cc_default="gcc"
2349 add_cflags -fsanitize=thread -pie -fPIC
2350 add_ldflags -fsanitize=thread -pie -fPIC
2351 ;;
2352 valgrind-massif)
2353 target_exec_default="valgrind"
2354 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2355 ;;
2356 valgrind-memcheck)
2357 target_exec_default="valgrind"
2358 target_exec_args="--track-origins=yes --leak-check=full"
2359 ;;
2360 msvc)
2361 # Check whether the current MSVC version needs the C99 converter.
2362 # From MSVC 2013 (compiler major version 18) onwards, it does actually
2363 # support enough of C99 to build libav. Default to the new
2364 # behaviour if the regexp was unable to match anything, since this
2365 # successfully parses the version number of existing supported
2366 # versions that require the converter (MSVC 2010 and 2012).
2367 cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2368 if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2369 cc_default="cl"
2370 else
2371 cc_default="c99wrap cl"
2372 fi
2373 ld_default="link"
2374 nm_default="dumpbin -symbols"
2375 ar_default="lib"
2376 target_os_default="win32"
2377 # Use a relative path for TMPDIR. This makes sure all the
2378 # ffconf temp files are written with a relative path, avoiding
2379 # issues with msys/win32 path conversion for MSVC parameters
2380 # such as -Fo<file> or -out:<file>.
2381 TMPDIR=.
2382 ;;
2383 icl)
2384 cc_default="icl"
2385 ld_default="xilink"
2386 nm_default="dumpbin -symbols"
2387 ar_default="xilib"
2388 target_os_default="win32"
2389 TMPDIR=.
2390 ;;
2391 gcov)
2392 add_cflags -fprofile-arcs -ftest-coverage
2393 add_ldflags -fprofile-arcs -ftest-coverage
2394 ;;
2395 hardened)
2396 add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2397 add_ldflags -Wl,-z,relro -Wl,-z,now
2398 ;;
2399 ?*)
2400 die "Unknown toolchain $toolchain"
2401 ;;
2402 esac
2403
2404 set_default arch cc pkg_config sysinclude target_exec target_os
2405 enabled cross_compile || host_cc_default=$cc
2406 set_default host_cc
2407
2408 if ! $pkg_config --version >/dev/null 2>&1; then
2409 warn "$pkg_config not found, library detection may fail."
2410 pkg_config=false
2411 fi
2412
2413 exesuf() {
2414 case $1 in
2415 mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2416 esac
2417 }
2418
2419 EXESUF=$(exesuf $target_os)
2420 HOSTEXESUF=$(exesuf $host_os)
2421
2422 # set temporary file name
2423 : ${TMPDIR:=$TEMPDIR}
2424 : ${TMPDIR:=$TMP}
2425 : ${TMPDIR:=/tmp}
2426
2427 if ! check_cmd mktemp -u XXXXXX; then
2428 # simple replacement for missing mktemp
2429 # NOT SAFE FOR GENERAL USE
2430 mktemp(){
2431 echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2432 }
2433 fi
2434
2435 tmpfile(){
2436 tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2437 (set -C; exec > $tmp) 2>/dev/null ||
2438 die "Unable to create temporary file in $TMPDIR."
2439 append TMPFILES $tmp
2440 eval $1=$tmp
2441 }
2442
2443 trap 'rm -f -- $TMPFILES' EXIT
2444
2445 tmpfile TMPASM .asm
2446 tmpfile TMPC .c
2447 tmpfile TMPE $EXESUF
2448 tmpfile TMPH .h
2449 tmpfile TMPO .o
2450 tmpfile TMPS .S
2451 tmpfile TMPSH .sh
2452 tmpfile TMPV .ver
2453
2454 unset -f mktemp
2455
2456 chmod +x $TMPE
2457
2458 # make sure we can execute files in $TMPDIR
2459 cat > $TMPSH 2>> $logfile <<EOF
2460 #! /bin/sh
2461 EOF
2462 chmod +x $TMPSH >> $logfile 2>&1
2463 if ! $TMPSH >> $logfile 2>&1; then
2464 cat <<EOF
2465 Unable to create and execute files in $TMPDIR. Set the TMPDIR environment
2466 variable to another directory and make sure that it is not mounted noexec.
2467 EOF
2468 die "Sanity test failed."
2469 fi
2470
2471 ccc_flags(){
2472 for flag; do
2473 case $flag in
2474 -std=c99) echo -c99 ;;
2475 -mcpu=*) echo -arch ${flag#*=} ;;
2476 -mieee) echo -ieee ;;
2477 -O*|-fast) echo $flag ;;
2478 -fno-math-errno) echo -assume nomath_errno ;;
2479 -g) echo -g3 ;;
2480 -Wall) echo -msg_enable level2 ;;
2481 -Wno-pointer-sign) echo -msg_disable ptrmismatch1 ;;
2482 -Wl,*) echo $flag ;;
2483 -f*|-W*) ;;
2484 *) echo $flag ;;
2485 esac
2486 done
2487 }
2488
2489 cparser_flags(){
2490 for flag; do
2491 case $flag in
2492 -Wno-switch) echo -Wno-switch-enum ;;
2493 -Wno-format-zero-length) ;;
2494 -Wdisabled-optimization) ;;
2495 -Wno-pointer-sign) echo -Wno-other ;;
2496 *) echo $flag ;;
2497 esac
2498 done
2499 }
2500
2501 msvc_common_flags(){
2502 for flag; do
2503 case $flag in
2504 # In addition to specifying certain flags under the compiler
2505 # specific filters, they must be specified here as well or else the
2506 # generic catch all at the bottom will print the original flag.
2507 -Wall) ;;
2508 -std=c99) ;;
2509 # Common flags
2510 -fomit-frame-pointer) ;;
2511 -g) echo -Z7 ;;
2512 -fno-math-errno) ;;
2513 -fno-common) ;;
2514 -fno-signed-zeros) ;;
2515 -fPIC) ;;
2516 -mthumb) ;;
2517 -march=*) ;;
2518 -lz) echo zlib.lib ;;
2519 -lavifil32) echo vfw32.lib ;;
2520 -lavicap32) echo vfw32.lib user32.lib ;;
2521 -l*) echo ${flag#-l}.lib ;;
2522 *) echo $flag ;;
2523 esac
2524 done
2525 }
2526
2527 msvc_flags(){
2528 msvc_common_flags "$@"
2529 for flag; do
2530 case $flag in
2531 -Wall) echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2532 -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2533 -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2534 -wd4273 ;;
2535 esac
2536 done
2537 }
2538
2539 icl_flags(){
2540 msvc_common_flags "$@"
2541 for flag; do
2542 case $flag in
2543 # Despite what Intel's documentation says -Wall, which is supported
2544 # on Windows, does enable remarks so disable them here.
2545 -Wall) echo $flag -Qdiag-disable:remark ;;
2546 -std=c99) echo -Qstd=c99 ;;
2547 esac
2548 done
2549 }
2550
2551 pgi_flags(){
2552 for flag; do
2553 case $flag in
2554 -flto) echo -Mipa=fast,libopt,libinline,vestigial ;;
2555 -fomit-frame-pointer) echo -Mnoframe ;;
2556 -g) echo -gopt ;;
2557 *) echo $flag ;;
2558 esac
2559 done
2560 }
2561
2562 suncc_flags(){
2563 for flag; do
2564 case $flag in
2565 -march=*|-mcpu=*)
2566 case "${flag#*=}" in
2567 native) echo -xtarget=native ;;
2568 v9|niagara) echo -xarch=sparc ;;
2569 ultrasparc) echo -xarch=sparcvis ;;
2570 ultrasparc3|niagara2) echo -xarch=sparcvis2 ;;
2571 i586|pentium) echo -xchip=pentium ;;
2572 i686|pentiumpro|pentium2) echo -xtarget=pentium_pro ;;
2573 pentium3*|c3-2) echo -xtarget=pentium3 ;;
2574 pentium-m) echo -xarch=sse2 -xchip=pentium3 ;;
2575 pentium4*) echo -xtarget=pentium4 ;;
2576 prescott|nocona) echo -xarch=sse3 -xchip=pentium4 ;;
2577 *-sse3) echo -xarch=sse3 ;;
2578 core2) echo -xarch=ssse3 -xchip=core2 ;;
2579 corei7) echo -xarch=sse4_2 -xchip=nehalem ;;
2580 corei7-avx) echo -xarch=avx -xchip=sandybridge ;;
2581 amdfam10|barcelona|bdver*) echo -xarch=sse4_1 ;;
2582 athlon-4|athlon-[mx]p) echo -xarch=ssea ;;
2583 k8|opteron|athlon64|athlon-fx)
2584 echo -xarch=sse2a ;;
2585 athlon*) echo -xarch=pentium_proa ;;
2586 esac
2587 ;;
2588 -std=c99) echo -xc99 ;;
2589 -fomit-frame-pointer) echo -xregs=frameptr ;;
2590 -fPIC) echo -KPIC -xcode=pic32 ;;
2591 -W*,*) echo $flag ;;
2592 -f*-*|-W*|-mimpure-text) ;;
2593 -shared) echo -G ;;
2594 *) echo $flag ;;
2595 esac
2596 done
2597 }
2598
2599 tms470_flags(){
2600 for flag; do
2601 case $flag in
2602 -march=*|-mcpu=*)
2603 case "${flag#*=}" in
2604 armv7-a|cortex-a*) echo -mv=7a8 ;;
2605 armv7-r|cortex-r*) echo -mv=7r4 ;;
2606 armv7-m|cortex-m*) echo -mv=7m3 ;;
2607 armv6*|arm11*) echo -mv=6 ;;
2608 armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2609 echo -mv=5e ;;
2610 armv4*|arm7*|arm9[24]*) echo -mv=4 ;;
2611 esac
2612 ;;
2613 -mfpu=neon) echo --float_support=vfpv3 --neon ;;
2614 -mfpu=vfp) echo --float_support=vfpv2 ;;
2615 -mfpu=vfpv3) echo --float_support=vfpv3 ;;
2616 -mfpu=vfpv3-d16) echo --float_support=vfpv3d16 ;;
2617 -msoft-float) echo --float_support=vfplib ;;
2618 -O[0-3]|-mf=*) echo $flag ;;
2619 -g) echo -g -mn ;;
2620 -pds=*) echo $flag ;;
2621 -D*|-I*) echo $flag ;;
2622 --gcc|--abi=*) echo $flag ;;
2623 -me) echo $flag ;;
2624 esac
2625 done
2626 }
2627
2628 probe_cc(){
2629 pfx=$1
2630 _cc=$2
2631
2632 unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2633 unset _ld_o _ldflags _ld_lib _ld_path
2634 unset _depflags _DEPCMD _DEPFLAGS
2635 _flags_filter=echo
2636
2637 if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2638 _type=llvm_gcc
2639 gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2640 _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2641 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2642 _cflags_speed='-O3'
2643 _cflags_size='-Os'
2644 elif $_cc -v 2>&1 | grep -qi ^gcc; then
2645 _type=gcc
2646 gcc_version=$($_cc --version | head -n1)
2647 gcc_basever=$($_cc -dumpversion)
2648 gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2649 gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2650 _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2651 if ! $_cc -dumpversion | grep -q '^2\.'; then
2652 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2653 fi
2654 _cflags_speed='-O3'
2655 _cflags_size='-Os'
2656 elif $_cc --version 2>/dev/null | grep -q ^icc; then
2657 _type=icc
2658 _ident=$($_cc --version | head -n1)
2659 _depflags='-MMD'
2660 _cflags_speed='-O3'
2661 _cflags_size='-Os'
2662 _cflags_noopt='-O1'
2663 elif $_cc -v 2>&1 | grep -q xlc; then
2664 _type=xlc
2665 _ident=$($_cc -qversion 2>/dev/null | head -n1)
2666 _cflags_speed='-O5'
2667 _cflags_size='-O5 -qcompact'
2668 elif $_cc -V 2>/dev/null | grep -q Compaq; then
2669 _type=ccc
2670 _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2671 _DEPFLAGS='-M'
2672 _cflags_speed='-fast'
2673 _cflags_size='-O1'
2674 _flags_filter=ccc_flags
2675 elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2676 test -d "$sysroot" || die "No valid sysroot specified."
2677 _type=armcc
2678 _ident=$($_cc --vsn | head -n1)
2679 armcc_conf="$PWD/armcc.conf"
2680 $_cc --arm_linux_configure \
2681 --arm_linux_config_file="$armcc_conf" \
2682 --configure_sysroot="$sysroot" \
2683 --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2684 die "Error creating armcc configuration file."
2685 $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2686 _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2687 as_default="${cross_prefix}gcc"
2688 _depflags='-MMD'
2689 _cflags_speed='-O3'
2690 _cflags_size='-Os'
2691 elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2692 _type=tms470
2693 _ident=$($_cc -version | head -n1 | tr -s ' ')
2694 _flags='--gcc --abi=eabi -me'
2695 _cc_e='-ppl -fe=$@'
2696 _cc_o='-fe=$@'
2697 _depflags='-ppa -ppd=$(@:.o=.d)'
2698 _cflags_speed='-O3 -mf=5'
2699 _cflags_size='-O3 -mf=2'
2700 _flags_filter=tms470_flags
2701 elif $_cc -v 2>&1 | grep -q clang; then
2702 _type=clang
2703 _ident=$($_cc --version | head -n1)
2704 _depflags='-MMD'
2705 _cflags_speed='-O3'
2706 _cflags_size='-Os'
2707 elif $_cc -V 2>&1 | grep -q Sun; then
2708 _type=suncc
2709 _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2710 _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2711 _DEPFLAGS='-xM1 -xc99'
2712 _ldflags='-std=c99'
2713 _cflags_speed='-O5'
2714 _cflags_size='-O5 -xspace'
2715 _flags_filter=suncc_flags
2716 elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2717 _type=pathscale
2718 _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2719 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2720 _cflags_speed='-O2'
2721 _cflags_size='-Os'
2722 _flags_filter='filter_out -Wdisabled-optimization'
2723 elif $_cc -v 2>&1 | grep -q Open64; then
2724 _type=open64
2725 _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2726 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2727 _cflags_speed='-O2'
2728 _cflags_size='-Os'
2729 _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2730 elif $_cc -V 2>&1 | grep -q Portland; then
2731 _type=pgi
2732 _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2733 opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2734 _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2735 _cflags_size="-O2 -Munroll=c:1 $opt_common"
2736 _cflags_noopt="-O1"
2737 _flags_filter=pgi_flags
2738 elif $_cc 2>&1 | grep -q Microsoft; then
2739 _type=msvc
2740 _ident=$($cc 2>&1 | head -n1)
2741 _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2742 _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2743 _cflags_speed="-O2"
2744 _cflags_size="-O1"
2745 if $_cc 2>&1 | grep -q Linker; then
2746 _ld_o='-out:$@'
2747 else
2748 _ld_o='-Fe$@'
2749 fi
2750 _cc_o='-Fo$@'
2751 _cc_e='-P -Fi$@'
2752 _flags_filter=msvc_flags
2753 _ld_lib='lib%.a'
2754 _ld_path='-libpath:'
2755 _flags='-nologo'
2756 _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2757 if [ $pfx = hostcc ]; then
2758 append _cflags -Dsnprintf=_snprintf
2759 fi
2760 elif $_cc 2>&1 | grep -q Intel; then
2761 _type=icl
2762 _ident=$($cc 2>&1 | head -n1)
2763 _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2764 # Not only is O3 broken on 13.x+ but it is slower on all previous
2765 # versions (tested) as well.
2766 _cflags_speed="-O2"
2767 _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2768 if $_cc 2>&1 | grep -q Linker; then
2769 _ld_o='-out:$@'
2770 else
2771 _ld_o='-Fe$@'
2772 fi
2773 _cc_o='-Fo$@'
2774 _cc_e='-P'
2775 _flags_filter=icl_flags
2776 _ld_lib='lib%.a'
2777 _ld_path='-libpath:'
2778 # -Qdiag-error to make icl error when seeing certain unknown arguments
2779 _flags='-nologo -Qdiag-error:4044,10157'
2780 # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2781 # with MSVC which enables it by default.
2782 _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2783 if [ $pfx = hostcc ]; then
2784 append _cflags -Dsnprintf=_snprintf
2785 fi
2786 elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2787 _type=cparser
2788 _ident=$($_cc --version | head -n1)
2789 _depflags='-MMD'
2790 _cflags_speed='-O4'
2791 _cflags_size='-O2'
2792 _flags_filter=cparser_flags
2793 fi
2794
2795 eval ${pfx}_type=\$_type
2796 eval ${pfx}_ident=\$_ident
2797 }
2798
2799 set_ccvars(){
2800 eval ${1}_C=\${_cc_c-\${${1}_C}}
2801 eval ${1}_E=\${_cc_e-\${${1}_E}}
2802 eval ${1}_O=\${_cc_o-\${${1}_O}}
2803
2804 if [ -n "$_depflags" ]; then
2805 eval ${1}_DEPFLAGS=\$_depflags
2806 else
2807 eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2808 eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2809 eval DEP${1}FLAGS=\$_flags
2810 fi
2811 }
2812
2813 probe_cc cc "$cc"
2814 cflags_filter=$_flags_filter
2815 cflags_speed=$_cflags_speed
2816 cflags_size=$_cflags_size
2817 cflags_noopt=$_cflags_noopt
2818 add_cflags $_flags $_cflags
2819 cc_ldflags=$_ldflags
2820 set_ccvars CC
2821
2822 probe_cc hostcc "$host_cc"
2823 host_cflags_filter=$_flags_filter
2824 add_host_cflags $_flags $_cflags
2825 set_ccvars HOSTCC
2826
2827 test -n "$cc_type" && enable $cc_type ||
2828 warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2829
2830 : ${as_default:=$cc}
2831 : ${dep_cc_default:=$cc}
2832 : ${ld_default:=$cc}
2833 : ${host_ld_default:=$host_cc}
2834 set_default ar as dep_cc ld host_ld
2835
2836 probe_cc as "$as"
2837 asflags_filter=$_flags_filter
2838 add_asflags $_flags $_cflags
2839 set_ccvars AS
2840
2841 probe_cc ld "$ld"
2842 ldflags_filter=$_flags_filter
2843 add_ldflags $_flags $_ldflags
2844 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2845 LD_O=${_ld_o-$LD_O}
2846 LD_LIB=${_ld_lib-$LD_LIB}
2847 LD_PATH=${_ld_path-$LD_PATH}
2848
2849 probe_cc hostld "$host_ld"
2850 host_ldflags_filter=$_flags_filter
2851 add_host_ldflags $_flags $_ldflags
2852 HOSTLD_O=${_ld_o-$HOSTLD_O}
2853
2854 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2855 probe_cc depcc "$dep_cc"
2856 CCDEP=${_DEPCMD:-$DEPCMD}
2857 CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2858 DEPCCFLAGS=$_flags
2859 fi
2860
2861 if $ar 2>&1 | grep -q Microsoft; then
2862 arflags="-nologo"
2863 ar_o='-out:$@'
2864 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2865 arflags="rq"
2866 ar_o='$@'
2867 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2868 arflags='-Xany -r -c'
2869 ar_o='$@'
2870 else
2871 arflags="rc"
2872 ar_o='$@'
2873 fi
2874
2875 add_cflags $extra_cflags
2876 add_asflags $extra_cflags
2877
2878 if test -n "$sysroot"; then
2879 case "$cc_type" in
2880 gcc|llvm_gcc|clang)
2881 add_cppflags --sysroot="$sysroot"
2882 add_ldflags --sysroot="$sysroot"
2883 ;;
2884 tms470)
2885 add_cppflags -I"$sysinclude"
2886 add_ldflags --sysroot="$sysroot"
2887 ;;
2888 esac
2889 fi
2890
2891 if test "$cpu" = host; then
2892 enabled cross_compile &&
2893 die "--cpu=host makes no sense when cross-compiling."
2894
2895 case "$cc_type" in
2896 gcc|llvm_gcc)
2897 check_native(){
2898 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2899 sed -n "/cc1.*$1=/{
2900 s/.*$1=\\([^ ]*\\).*/\\1/
2901 p
2902 q
2903 }" $TMPE
2904 }
2905 cpu=$(check_native -march || check_native -mcpu)
2906 ;;
2907 esac
2908
2909 test "${cpu:-host}" = host &&
2910 die "--cpu=host not supported with compiler $cc"
2911 fi
2912
2913 # Deal with common $arch aliases
2914 case "$arch" in
2915 aarch64|arm64)
2916 arch="aarch64"
2917 ;;
2918 arm*)
2919 arch="arm"
2920 ;;
2921 mips*|IP*)
2922 arch="mips"
2923 ;;
2924 parisc*|hppa*)
2925 arch="parisc"
2926 ;;
2927 "Power Macintosh"|ppc*|powerpc*)
2928 arch="ppc"
2929 ;;
2930 s390|s390x)
2931 arch="s390"
2932 ;;
2933 sh4|sh)
2934 arch="sh4"
2935 ;;
2936 sun4u|sparc*)
2937 arch="sparc"
2938 ;;
2939 tilegx|tile-gx)
2940 arch="tilegx"
2941 ;;
2942 i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2943 arch="x86"
2944 ;;
2945 esac
2946
2947 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2948 enable $arch
2949
2950 # Add processor-specific flags
2951 if enabled aarch64; then
2952
2953 case $cpu in
2954 armv*)
2955 cpuflags="-march=$cpu"
2956 ;;
2957 *)
2958 cpuflags="-mcpu=$cpu"
2959 ;;
2960 esac
2961
2962 elif enabled alpha; then
2963
2964 cpuflags="-mcpu=$cpu"
2965
2966 elif enabled arm; then
2967
2968 check_arm_arch() {
2969 check_cpp_condition stddef.h \
2970 "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2971 $cpuflags
2972 }
2973
2974 probe_arm_arch() {
2975 if check_arm_arch 4; then echo armv4;
2976 elif check_arm_arch 4T; then echo armv4t;
2977 elif check_arm_arch 5; then echo armv5;
2978 elif check_arm_arch 5E; then echo armv5e;
2979 elif check_arm_arch 5T; then echo armv5t;
2980 elif check_arm_arch 5TE; then echo armv5te;
2981 elif check_arm_arch 5TEJ; then echo armv5te;
2982 elif check_arm_arch 6; then echo armv6;
2983 elif check_arm_arch 6J; then echo armv6j;
2984 elif check_arm_arch 6K; then echo armv6k;
2985 elif check_arm_arch 6Z; then echo armv6z;
2986 elif check_arm_arch 6ZK; then echo armv6zk;
2987 elif check_arm_arch 6T2; then echo armv6t2;
2988 elif check_arm_arch 7; then echo armv7;
2989 elif check_arm_arch 7A 7_A; then echo armv7-a;
2990 elif check_arm_arch 7R 7_R; then echo armv7-r;
2991 elif check_arm_arch 7M 7_M; then echo armv7-m;
2992 elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2993 elif check_arm_arch 8A 8_A; then echo armv8-a;
2994 fi
2995 }
2996
2997 [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2998
2999 case $cpu in
3000 armv*)
3001 cpuflags="-march=$cpu"
3002 subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3003 ;;
3004 *)
3005 cpuflags="-mcpu=$cpu"
3006 case $cpu in
3007 cortex-a*) subarch=armv7a ;;
3008 cortex-r*) subarch=armv7r ;;
3009 cortex-m*) enable thumb; subarch=armv7m ;;
3010 arm11*) subarch=armv6 ;;
3011 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3012 armv4*|arm7*|arm9[24]*) subarch=armv4 ;;
3013 *) subarch=$(probe_arm_arch) ;;
3014 esac
3015 ;;
3016 esac
3017
3018 case "$subarch" in
3019 armv5t*) enable fast_clz ;;
3020 armv[6-8]*) enable fast_clz fast_unaligned ;;
3021 esac
3022
3023 elif enabled avr32; then
3024
3025 case $cpu in
3026 ap7[02]0[0-2])
3027 subarch="avr32_ap"
3028 cpuflags="-mpart=$cpu"
3029 ;;
3030 ap)
3031 subarch="avr32_ap"
3032 cpuflags="-march=$cpu"
3033 ;;
3034 uc3[ab]*)
3035 subarch="avr32_uc"
3036 cpuflags="-mcpu=$cpu"
3037 ;;
3038 uc)
3039 subarch="avr32_uc"
3040 cpuflags="-march=$cpu"
3041 ;;
3042 esac
3043
3044 elif enabled bfin; then
3045
3046 cpuflags="-mcpu=$cpu"
3047
3048 elif enabled mips; then
3049
3050 cpuflags="-march=$cpu"
3051
3052 elif enabled ppc; then
3053
3054 case $(tolower $cpu) in
3055 601|ppc601|powerpc601)
3056 cpuflags="-mcpu=601"
3057 disable altivec
3058 ;;
3059 603*|ppc603*|powerpc603*)
3060 cpuflags="-mcpu=603"
3061 disable altivec
3062 ;;
3063 604*|ppc604*|powerpc604*)
3064 cpuflags="-mcpu=604"
3065 disable altivec
3066 ;;
3067 g3|75*|ppc75*|powerpc75*)
3068 cpuflags="-mcpu=750"
3069 disable altivec
3070 ;;
3071 g4|745*|ppc745*|powerpc745*)
3072 cpuflags="-mcpu=7450"
3073 ;;
3074 74*|ppc74*|powerpc74*)
3075 cpuflags="-mcpu=7400"
3076 ;;
3077 g5|970|ppc970|powerpc970)
3078 cpuflags="-mcpu=970"
3079 ;;
3080 power[3-7]*)
3081 cpuflags="-mcpu=$cpu"
3082 ;;
3083 cell)
3084 cpuflags="-mcpu=cell"
3085 enable ldbrx
3086 ;;
3087 e500mc)
3088 cpuflags="-mcpu=e500mc"
3089 disable altivec
3090 ;;
3091 e500v2)
3092 cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3093 disable altivec
3094 ;;
3095 e500)
3096 cpuflags="-mcpu=8540 -mhard-float"
3097 disable altivec
3098 ;;
3099 esac
3100
3101 elif enabled sparc; then
3102
3103 case $cpu in
3104 cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3105 cpuflags="-mcpu=$cpu"
3106 disable vis
3107 ;;
3108 ultrasparc*|niagara[234])
3109 cpuflags="-mcpu=$cpu"
3110 ;;
3111 esac
3112
3113 elif enabled x86; then
3114
3115 case $cpu in
3116 i[345]86|pentium)
3117 cpuflags="-march=$cpu"
3118 disable mmx
3119 ;;
3120 # targets that do NOT support nopl and conditional mov (cmov)
3121 pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3122 cpuflags="-march=$cpu"
3123 disable i686
3124 ;;
3125 # targets that do support nopl and conditional mov (cmov)
3126 i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3127 cpuflags="-march=$cpu"
3128 enable i686
3129 enable fast_cmov
3130 ;;
3131 # targets that do support conditional mov but on which it's slow
3132 pentium4|pentium4m|prescott|nocona)
3133 cpuflags="-march=$cpu"
3134 enable i686
3135 disable fast_cmov
3136 ;;
3137 esac
3138
3139 fi
3140
3141 if [ "$cpu" != generic ]; then
3142 add_cflags $cpuflags
3143 add_asflags $cpuflags
3144 fi
3145
3146 # compiler sanity check
3147 check_exec <<EOF
3148 int main(void){ return 0; }
3149 EOF
3150 if test "$?" != 0; then
3151 echo "$cc is unable to create an executable file."
3152 if test -z "$cross_prefix" && ! enabled cross_compile ; then
3153 echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3154 echo "Only do this if you know what cross compiling means."
3155 fi
3156 die "C compiler test failed."
3157 fi
3158
3159 add_cppflags -D_ISOC99_SOURCE
3160 check_cflags -std=c99
3161 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3162 #include <stdlib.h>
3163 EOF
3164 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3165 #include <stdlib.h>
3166 EOF
3167
3168 add_host_cppflags -D_ISOC99_SOURCE
3169 check_host_cflags -std=c99
3170 check_host_cflags -Wall
3171 check_host_cflags -O3
3172
3173 check_64bit(){
3174 arch32=$1
3175 arch64=$2
3176 expr=$3
3177 check_code cc "" "int test[2*($expr) - 1]" &&
3178 subarch=$arch64 || subarch=$arch32
3179 }
3180
3181 case "$arch" in
3182 aarch64|alpha|ia64)
3183 spic=$shared
3184 ;;
3185 mips)
3186 check_64bit mips mips64 '_MIPS_SIM > 1'
3187 spic=$shared
3188 ;;
3189 parisc)
3190 check_64bit parisc parisc64 'sizeof(void *) > 4'
3191 spic=$shared
3192 ;;
3193 ppc)
3194 check_64bit ppc ppc64 'sizeof(void *) > 4'
3195 spic=$shared
3196 ;;
3197 sparc)
3198 check_64bit sparc sparc64 'sizeof(void *) > 4'
3199 spic=$shared
3200 ;;
3201 x86)
3202 check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3203 if test "$subarch" = "x86_64"; then
3204 spic=$shared
3205 fi
3206 ;;
3207 esac
3208
3209 enable $subarch
3210 enabled spic && enable_weak pic
3211
3212 # OS specific
3213 case $target_os in
3214 aix)
3215 SHFLAGS=-shared
3216 add_cppflags '-I\$(SRC_PATH)/compat/aix'
3217 enabled shared && add_ldflags -Wl,-brtl
3218 ;;
3219 haiku)
3220 prefix_default="/boot/common"
3221 network_extralibs="-lnetwork"
3222 host_libs=
3223 ;;
3224 sunos)
3225 SHFLAGS='-shared -Wl,-h,$$(@F)'
3226 enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3227 network_extralibs="-lsocket -lnsl"
3228 # When using suncc to build, the Solaris linker will mark
3229 # an executable with each instruction set encountered by
3230 # the Solaris assembler. As our libraries contain their own
3231 # guards for processor-specific code, instead suppress
3232 # generation of the HWCAPS ELF section on Solaris x86 only.
3233 enabled_all suncc x86 &&
3234 echo "hwcap_1 = OVERRIDE;" > mapfile &&
3235 add_ldflags -Wl,-M,mapfile
3236 nm_default='nm -P -g'
3237 ;;
3238 netbsd)
3239 disable symver
3240 oss_indev_extralibs="-lossaudio"
3241 oss_outdev_extralibs="-lossaudio"
3242 ;;
3243 openbsd|bitrig)
3244 disable symver
3245 SHFLAGS='-shared'
3246 SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3247 SLIB_INSTALL_LINKS=
3248 oss_indev_extralibs="-lossaudio"
3249 oss_outdev_extralibs="-lossaudio"
3250 ;;
3251 dragonfly)
3252 disable symver
3253 ;;
3254 freebsd)
3255 ;;
3256 bsd/os)
3257 add_extralibs -lpoll -lgnugetopt
3258 ;;
3259 darwin)
3260 gas="gas-preprocessor.pl $cc"
3261 enabled ppc && add_asflags -force_cpusubtype_ALL
3262 SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3263 enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3264 add_ldflags -Wl,-dynamic,-search_paths_first
3265 SLIBSUF=".dylib"
3266 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3267 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3268 objformat="macho"
3269 enabled x86_64 && objformat="macho64"
3270 enabled_any pic shared ||
3271 { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3272 ;;
3273 mingw32*)
3274 if test $target_os = "mingw32ce"; then
3275 disable network
3276 else
3277 target_os=mingw32
3278 fi
3279 LIBTARGET=i386
3280 if enabled x86_64; then
3281 LIBTARGET="i386:x86-64"
3282 elif enabled arm; then
3283 LIBTARGET=arm-wince
3284 fi
3285 check_ldflags -Wl,--nxcompat
3286 check_ldflags -Wl,--dynamicbase
3287 shlibdir_default="$bindir_default"
3288 SLIBPREF=""
3289 SLIBSUF=".dll"
3290 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3291 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3292 SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3293 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3294 SLIB_INSTALL_LINKS=
3295 SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3296 SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3297 SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3298 objformat="win32"
3299 dlltool="${cross_prefix}dlltool"
3300 ranlib=:
3301 enable dos_paths
3302 ;;
3303 win32|win64)
3304 disable symver
3305 if enabled shared; then
3306 # Link to the import library instead of the normal static library
3307 # for shared libs.
3308 LD_LIB='%.lib'
3309 # Cannot build both shared and static libs with MSVC or icl.
3310 disable static
3311 fi
3312 shlibdir_default="$bindir_default"
3313 SLIBPREF=""
3314 SLIBSUF=".dll"
3315 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3316 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3317 SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3318 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3319 SLIB_INSTALL_LINKS=
3320 SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3321 SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3322 SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3323 objformat="win32"
3324 ranlib=:
3325 enable dos_paths
3326 ;;
3327 cygwin*)
3328 target_os=cygwin
3329 shlibdir_default="$bindir_default"
3330 SLIBPREF="cyg"
3331 SLIBSUF=".dll"
3332 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3333 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3334 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3335 SLIB_INSTALL_LINKS=
3336 SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3337 SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3338 objformat="win32"
3339 enable dos_paths
3340 ;;
3341 *-dos|freedos|opendos)
3342 network_extralibs="-lsocket"
3343 objformat="coff"
3344 enable dos_paths
3345 add_cppflags -U__STRICT_ANSI__
3346 ;;
3347 linux)
3348 enable dv1394
3349 ;;
3350 irix*)
3351 target_os=irix
3352 ranlib="echo ignoring ranlib"
3353 ;;
3354 os/2*)
3355 ln_s="cp -f"
3356 objformat="aout"
3357 add_cppflags -D_GNU_SOURCE
3358 add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3359 SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3360 LIBSUF="_s.a"
3361 SLIBPREF=""
3362 SLIBSUF=".dll"
3363 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3364 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3365 SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3366 echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3367 echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3368 echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3369 echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3370 emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3371 SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3372 emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3373 SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3374 enable dos_paths
3375 ;;
3376 gnu/kfreebsd)
3377 add_cppflags -D_BSD_SOURCE
3378 ;;
3379 gnu)
3380 ;;
3381 qnx)
3382 add_cppflags -D_QNX_SOURCE
3383 network_extralibs="-lsocket"
3384 ;;
3385 symbian)
3386 SLIBSUF=".dll"
3387 enable dos_paths
3388 add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3389 add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3390 add_ldflags -Wl,--target1-abs,--no-undefined \
3391 -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3392 -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3393 add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3394 -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3395 -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3396 ;;
3397 osf1)
3398 add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3399 ;;
3400 minix)
3401 ;;
3402 plan9)
3403 add_cppflags -D_C99_SNPRINTF_EXTENSION \
3404 -D_REENTRANT_SOURCE \
3405 -D_RESEARCH_SOURCE \
3406 -DFD_SETSIZE=96 \
3407 -DHAVE_SOCK_OPTS
3408 add_compat strtod.o strtod=avpriv_strtod
3409 network_extralibs='-lbsd'
3410 exeobjs=compat/plan9/main.o
3411 disable avserver
3412 cp_f='cp'
3413 ;;
3414 none)
3415 ;;
3416 *)
3417 die "Unknown OS '$target_os'."
3418 ;;
3419 esac
3420
3421 # determine libc flavour
3422
3423 probe_libc(){
3424 pfx=$1
3425 pfx_no_=${pfx%_}
3426 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3427 if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3428 eval ${pfx}libc_type=uclibc
3429 add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3430 elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3431 eval ${pfx}libc_type=glibc
3432 add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3433 # MinGW headers can be installed on Cygwin, so check for newlib first.
3434 elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3435 eval ${pfx}libc_type=newlib
3436 add_${pfx}cppflags -U__STRICT_ANSI__
3437 # MinGW64 is backwards compatible with MinGW32, so check for it first.
3438 elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3439 eval ${pfx}libc_type=mingw64
3440 add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3441 eval test \$${pfx_no_}cc_type = "gcc" &&
3442 add_${pfx}cppflags -D__printf__=__gnu_printf__
3443 elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION" ||
3444 check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3445 eval ${pfx}libc_type=mingw32
3446 check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3447 (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3448 die "ERROR: MinGW32 runtime version must be >= 3.15."
3449 add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3450 eval test \$${pfx_no_}cc_type = "gcc" &&
3451 add_${pfx}cppflags -D__printf__=__gnu_printf__
3452 elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3453 eval ${pfx}libc_type=msvcrt
3454 # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3455 # 0x601 by default unless something else is set by the user.
3456 # This can easily lead to us detecting functions only present
3457 # in such new versions and producing binaries requiring windows 7.0.
3458 # Therefore explicitly set the default to XP unless the user has
3459 # set something else on the command line.
3460 check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3461 add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3462 elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3463 eval ${pfx}libc_type=klibc
3464 elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3465 eval ${pfx}libc_type=bionic
3466 elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3467 eval ${pfx}libc_type=solaris
3468 add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3469 fi
3470 }
3471
3472 probe_libc
3473 test -n "$libc_type" && enable libc_$libc_type
3474 probe_libc host_
3475 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3476
3477 case $libc_type in
3478 bionic)
3479 add_compat strtod.o strtod=avpriv_strtod
3480 ;;
3481 msvcrt)
3482 add_compat strtod.o strtod=avpriv_strtod
3483 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf \
3484 _snprintf=avpriv_snprintf \
3485 vsnprintf=avpriv_vsnprintf
3486 ;;
3487 esac
3488
3489 # hacks for compiler/libc/os combinations
3490
3491 if enabled_all tms470 libc_glibc; then
3492 CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3493 add_cppflags -D__USER_LABEL_PREFIX__=
3494 add_cppflags -D__builtin_memset=memset
3495 add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3496 add_cflags -pds=48 # incompatible redefinition of macro
3497 fi
3498
3499 if enabled_all ccc libc_glibc; then
3500 add_ldflags -Wl,-z,now # calls to libots crash without this
3501 fi
3502
3503 esc(){
3504 echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3505 }
3506
3507 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3508
3509 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3510
3511 set_default $PATHS_LIST
3512 set_default nm
3513
3514 # we need to build at least one lib type
3515 if ! enabled_any static shared; then
3516 cat <<EOF
3517 At least one library type must be built.
3518 Specify --enable-static to build the static libraries or --enable-shared to
3519 build the shared libraries as well. To only build the shared libraries specify
3520 --disable-static in addition to --enable-shared.
3521 EOF
3522 exit 1;
3523 fi
3524
3525 die_license_disabled() {
3526 enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3527 }
3528
3529 die_license_disabled gpl libcdio
3530 die_license_disabled gpl libx264
3531 die_license_disabled gpl libxavs
3532 die_license_disabled gpl libxvid
3533 die_license_disabled gpl x11grab
3534
3535 die_license_disabled nonfree libfaac
3536 die_license_disabled nonfree libfdk_aac
3537 die_license_disabled nonfree openssl
3538
3539 die_license_disabled version3 libopencore_amrnb
3540 die_license_disabled version3 libopencore_amrwb
3541 die_license_disabled version3 libvo_aacenc
3542 die_license_disabled version3 libvo_amrwbenc
3543
3544 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3545
3546 disabled optimizations || check_cflags -fomit-frame-pointer
3547
3548 enable_weak_pic() {
3549 disabled pic && return
3550 enable pic
3551 add_cppflags -DPIC
3552 case "$target_os" in
3553 mingw*|cygwin*)
3554 ;;
3555 *)
3556 add_cflags -fPIC
3557 ;;
3558 esac
3559 add_asflags -fPIC
3560 }
3561
3562 enabled pic && enable_weak_pic
3563
3564 check_cc <<EOF || die "Symbol mangling check failed."
3565 int ff_extern;
3566 EOF
3567 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3568 extern_prefix=${sym%%ff_extern*}
3569
3570 check_cc <<EOF && enable_weak inline_asm
3571 void foo(void) { __asm__ volatile ("" ::); }
3572 EOF
3573
3574 _restrict=
3575 for restrict_keyword in restrict __restrict__ __restrict; do
3576 check_cc <<EOF && _restrict=$restrict_keyword && break
3577 void foo(char * $restrict_keyword p);
3578 EOF
3579 done
3580
3581 check_cc <<EOF && enable pragma_deprecated
3582 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3583 EOF
3584
3585 check_cc <<EOF && enable attribute_packed
3586 struct { int x; } __attribute__((packed)) x;
3587 EOF
3588
3589 check_cc <<EOF && enable attribute_may_alias
3590 union { int x; } __attribute__((may_alias)) x;
3591 EOF
3592
3593 check_cc <<EOF || die "endian test failed"
3594 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3595 EOF
3596 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3597
3598 check_inline_asm inline_asm_labels '"1:\n"'
3599
3600 if enabled aarch64; then
3601 # internal assembler in clang 3.3 does not support this instruction
3602 enabled neon && check_insn neon 'ext v0.8B, v0.8B, v1.8B, #1'
3603 enabled vfp && check_insn vfp 'fmadd d0, d0, d1, d2'
3604
3605 map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3606
3607 elif enabled alpha; then
3608
3609 check_cflags -mieee
3610
3611 elif enabled arm; then
3612
3613 check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3614 enabled thumb && check_cflags -mthumb || check_cflags -marm
3615 nogas=die
3616
3617 if check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3618 enable vfp_args
3619 elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3620 case "${cross_prefix:-$cc}" in
3621 *hardfloat*) enable vfp_args; fpabi=vfp ;;
3622 *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3623 __asm__ (".eabi_attribute 28, 1");
3624 int main(void) { return 0; }
3625 EOF
3626 esac
3627 warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3628 fi
3629
3630 enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3631 enabled armv6 && check_insn armv6 'sadd16 r0, r0, r0'
3632 enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3633 enabled neon && check_insn neon 'vadd.i16 q0, q0, q0'
3634 enabled vfp && check_insn vfp 'fadds s0, s0, s0'
3635 enabled vfpv3 && check_insn vfpv3 'vmov.f32 s0, #1.0'
3636
3637 [ $target_os = linux ] ||
3638 map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3639 $ARCH_EXT_LIST_ARM
3640
3641 check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3642 check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3643
3644 [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3645
3646 elif enabled mips; then
3647
3648 check_inline_asm loongson '"dmult.g $1, $2, $3"'
3649
3650 elif enabled parisc; then
3651
3652 if enabled gcc; then
3653 case $($cc -dumpversion) in
3654 4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3655 esac
3656 fi
3657
3658 elif enabled ppc; then
3659
3660 enable local_aligned_8 local_aligned_16
3661
3662 check_inline_asm dcbzl '"dcbzl 0, %0" :: "r"(0)'
3663 check_inline_asm ibm_asm '"add 0, 0, 0"'
3664 check_inline_asm ppc4xx '"maclhw r10, r11, r12"'
3665 check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3666
3667 # AltiVec flags: The FSF version of GCC differs from the Apple version
3668 if enabled altivec; then
3669 nogas=warn
3670 check_cflags -maltivec -mabi=altivec &&
3671 { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3672 check_cflags -faltivec
3673
3674 # check if our compiler supports Motorola AltiVec C API
3675 check_cc <<EOF || disable altivec
3676 $inc_altivec_h
3677 int main(void) {
3678 vector signed int v1 = (vector signed int) { 0 };
3679 vector signed int v2 = (vector signed int) { 1 };
3680 v1 = vec_add(v1, v2);
3681 return 0;
3682 }
3683 EOF
3684
3685 enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3686 fi
3687
3688 elif enabled sparc; then
3689
3690 enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3691
3692 elif enabled x86; then
3693
3694 check_builtin rdtsc intrin.h "__rdtsc()"
3695 check_builtin mm_empty mmintrin.h "_mm_empty()"
3696
3697 enable local_aligned_8 local_aligned_16
3698