30f90eb2600e2f031145d7a2681da058de0e3798
[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-libtwolame enable MP2 encoding via libtwolame [no]
201 --enable-libvo-aacenc enable AAC encoding via libvo-aacenc [no]
202 --enable-libvo-amrwbenc enable AMR-WB encoding via libvo-amrwbenc [no]
203 --enable-libvorbis enable Vorbis encoding via libvorbis [no]
204 --enable-libvpx enable VP8 and VP9 de/encoding via libvpx [no]
205 --enable-libwavpack enable wavpack encoding via libwavpack [no]
206 --enable-libwebp enable WebP encoding via libwebp [no]
207 --enable-libx264 enable H.264 encoding via x264 [no]
208 --enable-libx265 enable HEVC encoding via x265 [no]
209 --enable-libxavs enable AVS encoding via xavs [no]
210 --enable-libxvid enable Xvid encoding via xvidcore,
211 native MPEG-4/Xvid encoder exists [no]
212 --enable-openssl enable openssl [no]
213 --enable-x11grab enable X11 grabbing [no]
214 --enable-zlib enable zlib [autodetect]
215
216 Toolchain options:
217 --arch=ARCH select architecture [$arch]
218 --cpu=CPU select the minimum required CPU (affects
219 instruction selection, may crash on older CPUs)
220 --cross-prefix=PREFIX use PREFIX for compilation tools [$cross_prefix]
221 --enable-cross-compile assume a cross-compiler is used
222 --sysroot=PATH root of cross-build tree
223 --sysinclude=PATH location of cross-build system headers
224 --target-os=OS compiler targets OS [$target_os]
225 --target-exec=CMD command to run executables on target
226 --target-path=DIR path to view of build directory on target
227 --target-samples=DIR path to samples directory on target
228 --toolchain=NAME set tool defaults according to NAME
229 --pkg-config=PKGCONFIG use pkg-config tool PKGCONFIG [$pkg_config_default]
230 --nm=NM use nm tool
231 --ar=AR use archive tool AR [$ar_default]
232 --as=AS use assembler AS [$as_default]
233 --cc=CC use C compiler CC [$cc_default]
234 --dep-cc=DEPCC use dependency generator DEPCC [$cc_default]
235 --ld=LD use linker LD
236 --pkg-config=PKGCONF use pkg-config PKGCONF [$pkg_config_default]
237 --pkg-config-flags=FLAGS pass additional flags to pkgconf []
238 --host-cc=HOSTCC use host C compiler HOSTCC
239 --host-cflags=HCFLAGS use HCFLAGS when compiling for host
240 --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
241 --host-ld=HOSTLD use host linker HOSTLD
242 --host-ldflags=HLDFLAGS use HLDFLAGS when linking for host
243 --host-libs=HLIBS use libs HLIBS when linking for host
244 --host-os=OS compiler host OS [$target_os]
245 --extra-cflags=ECFLAGS add ECFLAGS to CFLAGS [$CFLAGS]
246 --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
247 --extra-libs=ELIBS add ELIBS [$ELIBS]
248 --extra-version=STRING version string suffix []
249 --optflags=OPTFLAGS override optimization-related compiler flags
250 --build-suffix=SUFFIX library name suffix []
251 --enable-pic build position-independent code
252 --enable-thumb compile for Thumb instruction set
253 --enable-lto use link-time optimization
254
255 Advanced options (experts only):
256 --malloc-prefix=PREFIX prefix malloc and related names with PREFIX
257 --disable-symver disable symbol versioning
258 --enable-hardcoded-tables use hardcoded tables instead of runtime generation
259 --disable-safe-bitstream-reader
260 disable buffer boundary checking in bitreaders
261 (faster, but may crash)
262 --enable-memalign-hack emulate memalign, interferes with memory debuggers
263 --enable-sram allow use of on-chip SRAM
264
265 Optimization options (experts only):
266 --disable-asm disable all assembler optimizations
267 --disable-altivec disable AltiVec optimizations
268 --disable-amd3dnow disable 3DNow! optimizations
269 --disable-amd3dnowext disable 3DNow! extended optimizations
270 --disable-mmx disable MMX optimizations
271 --disable-mmxext disable MMXEXT optimizations
272 --disable-sse disable SSE optimizations
273 --disable-sse2 disable SSE2 optimizations
274 --disable-sse3 disable SSE3 optimizations
275 --disable-ssse3 disable SSSE3 optimizations
276 --disable-sse4 disable SSE4 optimizations
277 --disable-sse42 disable SSE4.2 optimizations
278 --disable-avx disable AVX optimizations
279 --disable-xop disable XOP optimizations
280 --disable-fma3 disable FMA3 optimizations
281 --disable-fma4 disable FMA4 optimizations
282 --disable-avx2 disable AVX2 optimizations
283 --disable-armv5te disable armv5te optimizations
284 --disable-armv6 disable armv6 optimizations
285 --disable-armv6t2 disable armv6t2 optimizations
286 --disable-vfp disable VFP optimizations
287 --disable-neon disable NEON optimizations
288 --disable-inline-asm disable use of inline assembler
289 --disable-yasm disable use of yasm assembler
290
291 Developer options (useful when working on Libav itself):
292 --disable-debug disable debugging symbols
293 --enable-debug=LEVEL set the debug level [$debuglevel]
294 --disable-optimizations disable compiler optimizations
295 --enable-extra-warnings enable more compiler warnings
296 --samples=PATH location of test samples for FATE, if not set use
297 \$LIBAV_SAMPLES at make invocation time.
298 --enable-neon-clobber-test check NEON registers for clobbering (should be
299 used only for debugging purposes)
300 --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
301 should be used only for debugging purposes)
302 --enable-random randomly enable/disable components
303 --disable-random
304 --enable-random=LIST randomly enable/disable specific components or
305 --disable-random=LIST component groups. LIST is a comma-separated list
306 of NAME[:PROB] entries where NAME is a component
307 (group) and PROB the probability associated with
308 NAME (default 0.5).
309 --random-seed=VALUE seed value for --enable/disable-random
310
311 NOTE: Object files are built at the place where configure is launched.
312 EOF
313 exit 0
314 }
315
316 quotes='""'
317
318 log(){
319 echo "$@" >> $logfile
320 }
321
322 log_file(){
323 log BEGIN $1
324 pr -n -t $1 >> $logfile
325 log END $1
326 }
327
328 echolog(){
329 log "$@"
330 echo "$@"
331 }
332
333 warn(){
334 log "WARNING: $*"
335 WARNINGS="${WARNINGS}WARNING: $*\n"
336 }
337
338 die(){
339 echolog "$@"
340 cat <<EOF
341
342 If you think configure made a mistake, make sure you are using the latest
343 version from Git. If the latest version fails, report the problem to the
344 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
345 EOF
346 if disabled logging; then
347 cat <<EOF
348 Rerun configure with logging enabled (do not use --disable-logging), and
349 include the log this produces with your report.
350 EOF
351 else
352 cat <<EOF
353 Include the log file "$logfile" produced by configure as this will help
354 solving the problem.
355 EOF
356 fi
357 exit 1
358 }
359
360 # Avoid locale weirdness, besides we really just want to translate ASCII.
361 toupper(){
362 echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
363 }
364
365 tolower(){
366 echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
367 }
368
369 c_escape(){
370 echo "$*" | sed 's/["\\]/\\\0/g'
371 }
372
373 sh_quote(){
374 v=$(echo "$1" | sed "s/'/'\\\\''/g")
375 test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
376 echo "$v"
377 }
378
379 cleanws(){
380 echo "$@" | sed 's/^ *//;s/ */ /g;s/ *$//'
381 }
382
383 filter(){
384 pat=$1
385 shift
386 for v; do
387 eval "case $v in $pat) echo $v ;; esac"
388 done
389 }
390
391 filter_out(){
392 pat=$1
393 shift
394 for v; do
395 eval "case $v in $pat) ;; *) echo $v ;; esac"
396 done
397 }
398
399 map(){
400 m=$1
401 shift
402 for v; do eval $m; done
403 }
404
405 add_suffix(){
406 suffix=$1
407 shift
408 for v; do echo ${v}${suffix}; done
409 }
410
411 set_all(){
412 value=$1
413 shift
414 for var in $*; do
415 eval $var=$value
416 done
417 }
418
419 set_weak(){
420 value=$1
421 shift
422 for var; do
423 eval : \${$var:=$value}
424 done
425 }
426
427 sanitize_var_name(){
428 echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
429 }
430
431 set_safe(){
432 var=$1
433 shift
434 eval $(sanitize_var_name "$var")='$*'
435 }
436
437 get_safe(){
438 eval echo \$$(sanitize_var_name "$1")
439 }
440
441 pushvar(){
442 for pvar in $*; do
443 eval level=\${${pvar}_level:=0}
444 eval ${pvar}_${level}="\$$pvar"
445 eval ${pvar}_level=$(($level+1))
446 done
447 }
448
449 popvar(){
450 for pvar in $*; do
451 eval level=\${${pvar}_level:-0}
452 test $level = 0 && continue
453 eval level=$(($level-1))
454 eval $pvar="\${${pvar}_${level}}"
455 eval ${pvar}_level=$level
456 eval unset ${pvar}_${level}
457 done
458 }
459
460 enable(){
461 set_all yes $*
462 }
463
464 disable(){
465 set_all no $*
466 }
467
468 enable_weak(){
469 set_weak yes $*
470 }
471
472 disable_weak(){
473 set_weak no $*
474 }
475
476 enable_safe(){
477 for var; do
478 enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
479 done
480 }
481
482 disable_safe(){
483 for var; do
484 disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
485 done
486 }
487
488 do_enable_deep(){
489 for var; do
490 enabled $var && continue
491 eval sel="\$${var}_select"
492 eval sgs="\$${var}_suggest"
493 pushvar var sgs
494 enable_deep $sel
495 popvar sgs
496 enable_deep_weak $sgs
497 popvar var
498 done
499 }
500
501 enable_deep(){
502 do_enable_deep $*
503 enable $*
504 }
505
506 enable_deep_weak(){
507 for var; do
508 disabled $var && continue
509 pushvar var
510 do_enable_deep $var
511 popvar var
512 enable_weak $var
513 done
514 }
515
516 enabled(){
517 test "${1#!}" = "$1" && op== || op=!=
518 eval test "x\$${1#!}" $op "xyes"
519 }
520
521 disabled(){
522 test "${1#!}" = "$1" && op== || op=!=
523 eval test "x\$${1#!}" $op "xno"
524 }
525
526 enabled_all(){
527 for opt; do
528 enabled $opt || return 1
529 done
530 }
531
532 disabled_all(){
533 for opt; do
534 disabled $opt || return 1
535 done
536 }
537
538 enabled_any(){
539 for opt; do
540 enabled $opt && return 0
541 done
542 }
543
544 disabled_any(){
545 for opt; do
546 disabled $opt && return 0
547 done
548 return 1
549 }
550
551 set_default(){
552 for opt; do
553 eval : \${$opt:=\$${opt}_default}
554 done
555 }
556
557 is_in(){
558 value=$1
559 shift
560 for var in $*; do
561 [ $var = $value ] && return 0
562 done
563 return 1
564 }
565
566 do_check_deps(){
567 for cfg; do
568 cfg="${cfg#!}"
569 enabled ${cfg}_checking && die "Circular dependency for $cfg."
570 disabled ${cfg}_checking && continue
571 enable ${cfg}_checking
572 append allopts $cfg
573
574 eval dep_all="\$${cfg}_deps"
575 eval dep_any="\$${cfg}_deps_any"
576 eval dep_sel="\$${cfg}_select"
577 eval dep_sgs="\$${cfg}_suggest"
578 eval dep_ifa="\$${cfg}_if"
579 eval dep_ifn="\$${cfg}_if_any"
580
581 pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
582 do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
583 popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
584
585 [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
586 [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
587 enabled_all $dep_all || disable $cfg
588 enabled_any $dep_any || disable $cfg
589 disabled_any $dep_sel && disable $cfg
590
591 if enabled $cfg; then
592 enable_deep $dep_sel
593 enable_deep_weak $dep_sgs
594 fi
595
596 disable ${cfg}_checking
597 done
598 }
599
600 check_deps(){
601 unset allopts
602
603 do_check_deps "$@"
604
605 for cfg in $allopts; do
606 enabled $cfg || continue
607 eval dep_extralibs="\$${cfg}_extralibs"
608 test -n "$dep_extralibs" && add_extralibs $dep_extralibs
609 done
610 }
611
612 print_config(){
613 pfx=$1
614 files=$2
615 shift 2
616 map 'eval echo "$v \${$v:-no}"' "$@" |
617 awk "BEGIN { split(\"$files\", files) }
618 {
619 c = \"$pfx\" toupper(\$1);
620 v = \$2;
621 sub(/yes/, 1, v);
622 sub(/no/, 0, v);
623 for (f in files) {
624 file = files[f];
625 if (file ~ /\\.h\$/) {
626 printf(\"#define %s %d\\n\", c, v) >>file;
627 } else if (file ~ /\\.asm\$/) {
628 printf(\"%%define %s %d\\n\", c, v) >>file;
629 } else if (file ~ /\\.mak\$/) {
630 n = -v ? \"\" : \"!\";
631 printf(\"%s%s=yes\\n\", n, c) >>file;
632 }
633 }
634 }"
635 }
636
637 print_enabled(){
638 suf=$1
639 shift
640 for v; do
641 enabled $v && printf "%s\n" ${v%$suf};
642 done
643 }
644
645 append(){
646 var=$1
647 shift
648 eval "$var=\"\$$var $*\""
649 }
650
651 prepend(){
652 var=$1
653 shift
654 eval "$var=\"$* \$$var\""
655 }
656
657 add_cppflags(){
658 append CPPFLAGS "$@"
659 }
660
661 add_cflags(){
662 append CFLAGS $($cflags_filter "$@")
663 }
664
665 add_asflags(){
666 append ASFLAGS $($asflags_filter "$@")
667 }
668
669 add_ldflags(){
670 append LDFLAGS $($ldflags_filter "$@")
671 }
672
673 add_stripflags(){
674 append STRIPFLAGS "$@"
675 }
676
677 add_extralibs(){
678 prepend extralibs $($ldflags_filter "$@")
679 }
680
681 add_host_cppflags(){
682 append host_cppflags "$@"
683 }
684
685 add_host_cflags(){
686 append host_cflags $($host_cflags_filter "$@")
687 }
688
689 add_host_ldflags(){
690 append host_ldflags $($host_ldflags_filter "$@")
691 }
692
693 add_compat(){
694 append compat_objs $1
695 shift
696 map 'add_cppflags -D$v' "$@"
697 }
698
699 check_cmd(){
700 log "$@"
701 "$@" >> $logfile 2>&1
702 }
703
704 cc_o(){
705 eval printf '%s\\n' $CC_O
706 }
707
708 cc_e(){
709 eval printf '%s\\n' $CC_E
710 }
711
712 check_cc(){
713 log check_cc "$@"
714 cat > $TMPC
715 log_file $TMPC
716 check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
717 }
718
719 check_cpp(){
720 log check_cpp "$@"
721 cat > $TMPC
722 log_file $TMPC
723 check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
724 }
725
726 as_o(){
727 eval printf '%s\\n' $AS_O
728 }
729
730 check_as(){
731 log check_as "$@"
732 cat > $TMPS
733 log_file $TMPS
734 check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
735 }
736
737 check_inline_asm(){
738 log check_inline_asm "$@"
739 name="$1"
740 code="$2"
741 shift 2
742 disable $name
743 check_cc "$@" <<EOF && enable $name
744 void foo(void){ __asm__ volatile($code); }
745 EOF
746 }
747
748 check_insn(){
749 log check_insn "$@"
750 check_inline_asm ${1}_inline "\"$2\""
751 echo "$2" | check_as && enable ${1}_external || disable ${1}_external
752 }
753
754 check_yasm(){
755 log check_yasm "$@"
756 echo "$1" > $TMPS
757 log_file $TMPS
758 shift 1
759 check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
760 }
761
762 ld_o(){
763 eval printf '%s\\n' $LD_O
764 }
765
766 check_ld(){
767 log check_ld "$@"
768 flags=$(filter_out '-l*' "$@")
769 libs=$(filter '-l*' "$@")
770 check_cc $($cflags_filter $flags) || return
771 flags=$($ldflags_filter $flags)
772 libs=$($ldflags_filter $libs)
773 check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
774 }
775
776 print_include(){
777 hdr=$1
778 test "${hdr%.h}" = "${hdr}" &&
779 echo "#include $hdr" ||
780 echo "#include <$hdr>"
781 }
782
783 check_code(){
784 log check_code "$@"
785 check=$1
786 headers=$2
787 code=$3
788 shift 3
789 {
790 for hdr in $headers; do
791 print_include $hdr
792 done
793 echo "int main(void) { $code; return 0; }"
794 } | check_$check "$@"
795 }
796
797 check_cppflags(){
798 log check_cppflags "$@"
799 check_cc "$@" <<EOF && append CPPFLAGS "$@"
800 int x;
801 EOF
802 }
803
804 test_cflags(){
805 log test_cflags "$@"
806 set -- $($cflags_filter "$@")
807 check_cc "$@" <<EOF
808 int x;
809 EOF
810 }
811
812 check_cflags(){
813 log check_cflags "$@"
814 test_cflags "$@" && add_cflags "$@"
815 }
816
817 test_ldflags(){
818 log test_ldflags "$@"
819 check_ld "$@" <<EOF
820 int main(void){ return 0; }
821 EOF
822 }
823
824 check_ldflags(){
825 log check_ldflags "$@"
826 test_ldflags "$@" && add_ldflags "$@"
827 }
828
829 test_stripflags(){
830 log test_stripflags "$@"
831 # call check_cc to get a fresh TMPO
832 check_cc <<EOF
833 int main(void) { return 0; }
834 EOF
835 check_cmd $strip $STRIPFLAGS "$@" $TMPO
836 }
837
838 check_stripflags(){
839 log check_stripflags "$@"
840 test_stripflags "$@" && add_stripflags "$@"
841 }
842
843 check_header(){
844 log check_header "$@"
845 header=$1
846 shift
847 disable_safe $header
848 check_cpp "$@" <<EOF && enable_safe $header
849 #include <$header>
850 int x;
851 EOF
852 }
853
854 check_func(){
855 log check_func "$@"
856 func=$1
857 shift
858 disable $func
859 check_ld "$@" <<EOF && enable $func
860 extern int $func();
861 int main(void){ $func(); }
862 EOF
863 }
864
865 check_mathfunc(){
866 log check_mathfunc "$@"
867 func=$1
868 narg=$2
869 shift 2
870 test $narg = 2 && args="f, g" || args="f"
871 disable $func
872 check_ld "$@" <<EOF && enable $func
873 #include <math.h>
874 float foo(float f, float g) { return $func($args); }
875 int main(void){ return 0; }
876 EOF
877 }
878
879 check_func_headers(){
880 log check_func_headers "$@"
881 headers=$1
882 funcs=$2
883 shift 2
884 {
885 for hdr in $headers; do
886 print_include $hdr
887 done
888 for func in $funcs; do
889 echo "long check_$func(void) { return (long) $func; }"
890 done
891 echo "int main(void) { return 0; }"
892 } | check_ld "$@" && enable $funcs && enable_safe $headers
893 }
894
895 check_cpp_condition(){
896 log check_cpp_condition "$@"
897 header=$1
898 condition=$2
899 shift 2
900 check_cpp "$@" <<EOF
901 #include <$header>
902 #if !($condition)
903 #error "unsatisfied condition: $condition"
904 #endif
905 EOF
906 }
907
908 check_lib(){
909 log check_lib "$@"
910 header="$1"
911 func="$2"
912 shift 2
913 check_header $header && check_func $func "$@" && add_extralibs "$@"
914 }
915
916 check_lib2(){
917 log check_lib2 "$@"
918 headers="$1"
919 funcs="$2"
920 shift 2
921 check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
922 }
923
924 check_pkg_config(){
925 log check_pkg_config "$@"
926 pkg="$1"
927 headers="$2"
928 funcs="$3"
929 shift 3
930 check_cmd $pkg_config --exists --print-errors $pkg || return
931 pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
932 pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
933 check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
934 set_safe ${pkg}_cflags $pkg_cflags &&
935 set_safe ${pkg}_libs $pkg_libs
936 }
937
938 check_exec(){
939 check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
940 }
941
942 check_exec_crash(){
943 code=$(cat)
944
945 # exit() is not async signal safe. _Exit (C99) and _exit (POSIX)
946 # are safe but may not be available everywhere. Thus we use
947 # raise(SIGTERM) instead. The check is run in a subshell so we
948 # can redirect the "Terminated" message from the shell. SIGBUS
949 # is not defined by standard C so it is used conditionally.
950
951 (check_exec "$@") >> $logfile 2>&1 <<EOF
952 #include <signal.h>
953 static void sighandler(int sig){
954 raise(SIGTERM);
955 }
956 int foo(void){
957 $code
958 }
959 int (*func_ptr)(void) = foo;
960 int main(void){
961 signal(SIGILL, sighandler);
962 signal(SIGFPE, sighandler);
963 signal(SIGSEGV, sighandler);
964 #ifdef SIGBUS
965 signal(SIGBUS, sighandler);
966 #endif
967 return func_ptr();
968 }
969 EOF
970 }
971
972 check_type(){
973 log check_type "$@"
974 headers=$1
975 type=$2
976 shift 2
977 disable_safe "$type"
978 check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
979 }
980
981 check_struct(){
982 log check_struct "$@"
983 headers=$1
984 struct=$2
985 member=$3
986 shift 3
987 disable_safe "${struct}_${member}"
988 check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
989 enable_safe "${struct}_${member}"
990 }
991
992 check_builtin(){
993 log check_builtin "$@"
994 name=$1
995 headers=$2
996 builtin=$3
997 shift 3
998 disable "$name"
999 check_code ld "$headers" "$builtin" "$@" && enable "$name"
1000 }
1001
1002 check_compile_assert(){
1003 log check_compile_assert "$@"
1004 name=$1
1005 headers=$2
1006 condition=$3
1007 shift 3
1008 disable "$name"
1009 check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1010 }
1011
1012 require(){
1013 name="$1"
1014 header="$2"
1015 func="$3"
1016 shift 3
1017 check_lib $header $func "$@" || die "ERROR: $name not found"
1018 }
1019
1020 require2(){
1021 name="$1"
1022 headers="$2"
1023 func="$3"
1024 shift 3
1025 check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1026 }
1027
1028 require_pkg_config(){
1029 pkg="$1"
1030 check_pkg_config "$@" || die "ERROR: $pkg not found"
1031 add_cflags $(get_safe ${pkg}_cflags)
1032 add_extralibs $(get_safe ${pkg}_libs)
1033 }
1034
1035 hostcc_e(){
1036 eval printf '%s\\n' $HOSTCC_E
1037 }
1038
1039 hostcc_o(){
1040 eval printf '%s\\n' $HOSTCC_O
1041 }
1042
1043 check_host_cc(){
1044 log check_host_cc "$@"
1045 cat > $TMPC
1046 log_file $TMPC
1047 check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1048 }
1049
1050 check_host_cpp(){
1051 log check_host_cpp "$@"
1052 cat > $TMPC
1053 log_file $TMPC
1054 check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1055 }
1056
1057 check_host_cppflags(){
1058 log check_host_cppflags "$@"
1059 check_host_cc "$@" <<EOF && append host_cppflags "$@"
1060 int x;
1061 EOF
1062 }
1063
1064 check_host_cflags(){
1065 log check_host_cflags "$@"
1066 set -- $($host_cflags_filter "$@")
1067 check_host_cc "$@" <<EOF && append host_cflags "$@"
1068 int x;
1069 EOF
1070 }
1071
1072 check_host_cpp_condition(){
1073 log check_host_cpp_condition "$@"
1074 header=$1
1075 condition=$2
1076 shift 2
1077 check_host_cpp "$@" <<EOF
1078 #include <$header>
1079 #if !($condition)
1080 #error "unsatisfied condition: $condition"
1081 #endif
1082 EOF
1083 }
1084
1085 apply(){
1086 file=$1
1087 shift
1088 "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1089 }
1090
1091 cp_if_changed(){
1092 cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1093 mkdir -p "$(dirname $2)"
1094 $cp_f "$1" "$2"
1095 }
1096
1097 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1098 # system-dependent things.
1099
1100 COMPONENT_LIST="
1101 bsfs
1102 decoders
1103 demuxers
1104 encoders
1105 filters
1106 hwaccels
1107 indevs
1108 muxers
1109 outdevs
1110 parsers
1111 protocols
1112 "
1113
1114 EXAMPLE_LIST="
1115 avcodec_example
1116 filter_audio_example
1117 metadata_example
1118 output_example
1119 transcode_aac_example
1120 "
1121
1122 EXTERNAL_LIBRARY_LIST="
1123 avisynth
1124 bzlib
1125 frei0r
1126 gnutls
1127 libcdio
1128 libdc1394
1129 libfaac
1130 libfdk_aac
1131 libfontconfig
1132 libfreetype
1133 libgsm
1134 libilbc
1135 libmp3lame
1136 libopencore_amrnb
1137 libopencore_amrwb
1138 libopencv
1139 libopenjpeg
1140 libopus
1141 libpulse
1142 librtmp
1143 libschroedinger
1144 libspeex
1145 libtheora
1146 libtwolame
1147 libvo_aacenc
1148 libvo_amrwbenc
1149 libvorbis
1150 libvpx
1151 libwavpack
1152 libwebp
1153 libx264
1154 libx265
1155 libxavs
1156 libxvid
1157 openssl
1158 x11grab
1159 zlib
1160 "
1161
1162 FEATURE_LIST="
1163 gray
1164 hardcoded_tables
1165 runtime_cpudetect
1166 safe_bitstream_reader
1167 shared
1168 small
1169 sram
1170 static
1171 swscale_alpha
1172 "
1173
1174 HWACCEL_LIST="
1175 dxva2
1176 vaapi
1177 vda
1178 vdpau
1179 "
1180
1181 LIBRARY_LIST="
1182 avcodec
1183 avdevice
1184 avfilter
1185 avformat
1186 avresample
1187 avutil
1188 swscale
1189 "
1190
1191 LICENSE_LIST="
1192 gpl
1193 nonfree
1194 version3
1195 "
1196
1197 PROGRAM_LIST="
1198 avconv
1199 avplay
1200 avprobe
1201 avserver
1202 "
1203
1204 SUBSYSTEM_LIST="
1205 dct
1206 doc
1207 error_resilience
1208 fft
1209 lsp
1210 lzo
1211 mdct
1212 network
1213 rdft
1214 "
1215
1216 CONFIG_LIST="
1217 $COMPONENT_LIST
1218 $EXAMPLE_LIST
1219 $EXTERNAL_LIBRARY_LIST
1220 $FEATURE_LIST
1221 $HWACCEL_LIST
1222 $LICENSE_LIST
1223 $LIBRARY_LIST
1224 $PROGRAM_LIST
1225 $SUBSYSTEM_LIST
1226 memalign_hack
1227 neon_clobber_test
1228 pic
1229 pod2man
1230 texi2html
1231 thumb
1232 xmm_clobber_test
1233 "
1234
1235 THREADS_LIST="
1236 pthreads
1237 w32threads
1238 "
1239
1240 ATOMICS_LIST="
1241 atomics_gcc
1242 atomics_suncc
1243 atomics_win32
1244 "
1245
1246 ARCH_LIST="
1247 aarch64
1248 alpha
1249 arm
1250 avr32
1251 avr32_ap
1252 avr32_uc
1253 bfin
1254 ia64
1255 m68k
1256 mips
1257 mips64
1258 parisc
1259 ppc
1260 ppc64
1261 s390
1262 sh4
1263 sparc
1264 sparc64
1265 tilegx
1266 tilepro
1267 tomi
1268 x86
1269 x86_32
1270 x86_64
1271 "
1272
1273 ARCH_EXT_LIST_ARM="
1274 armv5te
1275 armv6
1276 armv6t2
1277 armv8
1278 neon
1279 vfp
1280 vfpv3
1281 "
1282
1283 ARCH_EXT_LIST_X86_SIMD="
1284 amd3dnow
1285 amd3dnowext
1286 avx
1287 avx2
1288 fma3
1289 fma4
1290 mmx
1291 mmxext
1292 sse
1293 sse2
1294 sse3
1295 sse4
1296 sse42
1297 ssse3
1298 xop
1299 "
1300
1301 ARCH_EXT_LIST_PPC="
1302 altivec
1303 dcbzl
1304 ldbrx
1305 ppc4xx
1306 "
1307
1308 ARCH_EXT_LIST_X86="
1309 $ARCH_EXT_LIST_X86_SIMD
1310 cpunop
1311 i686
1312 "
1313
1314 ARCH_EXT_LIST="
1315 $ARCH_EXT_LIST_ARM
1316 $ARCH_EXT_LIST_PPC
1317 $ARCH_EXT_LIST_X86
1318 loongson
1319 vis
1320 "
1321
1322 ARCH_FEATURES="
1323 aligned_stack
1324 fast_64bit
1325 fast_clz
1326 fast_cmov
1327 local_aligned_8
1328 local_aligned_16
1329 "
1330
1331 BUILTIN_LIST="
1332 atomic_cas_ptr
1333 machine_rw_barrier
1334 MemoryBarrier
1335 mm_empty
1336 rdtsc
1337 sync_val_compare_and_swap
1338 "
1339 HAVE_LIST_CMDLINE="
1340 inline_asm
1341 symver
1342 yasm
1343 "
1344
1345 HAVE_LIST_PUB="
1346 bigendian
1347 fast_unaligned
1348 "
1349
1350 HEADERS_LIST="
1351 alsa_asoundlib_h
1352 altivec_h
1353 arpa_inet_h
1354 cdio_paranoia_h
1355 cdio_paranoia_paranoia_h
1356 dev_bktr_ioctl_bt848_h
1357 dev_bktr_ioctl_meteor_h
1358 dev_ic_bt8xx_h
1359 dev_video_bktr_ioctl_bt848_h
1360 dev_video_meteor_ioctl_meteor_h
1361 direct_h
1362 dlfcn_h
1363 dxva_h
1364 gsm_h
1365 io_h
1366 mach_mach_time_h
1367 machine_ioctl_bt848_h
1368 machine_ioctl_meteor_h
1369 malloc_h
1370 poll_h
1371 sndio_h
1372 soundcard_h
1373 sys_mman_h
1374 sys_param_h
1375 sys_resource_h
1376 sys_select_h
1377 sys_soundcard_h
1378 sys_time_h
1379 sys_un_h
1380 sys_videoio_h
1381 unistd_h
1382 windows_h
1383 winsock2_h
1384 "
1385
1386 MATH_FUNCS="
1387 atanf
1388 atan2f
1389 cbrtf
1390 cosf
1391 exp2
1392 exp2f
1393 expf
1394 isinf
1395 isnan
1396 ldexpf
1397 llrint
1398 llrintf
1399 log2
1400 log2f
1401 log10f
1402 lrint
1403 lrintf
1404 powf
1405 rint
1406 round
1407 roundf
1408 sinf
1409 trunc
1410 truncf
1411 "
1412
1413 SYSTEM_FUNCS="
1414 aligned_malloc
1415 closesocket
1416 CommandLineToArgvW
1417 CoTaskMemFree
1418 CryptGenRandom
1419 dlopen
1420 fcntl
1421 flt_lim
1422 fork
1423 getaddrinfo
1424 gethrtime
1425 getopt
1426 GetProcessAffinityMask
1427 GetProcessMemoryInfo
1428 GetProcessTimes
1429 getrusage
1430 getservbyport
1431 GetSystemTimeAsFileTime
1432 gettimeofday
1433 inet_aton
1434 isatty
1435 jack_port_get_latency_range
1436 localtime_r
1437 mach_absolute_time
1438 MapViewOfFile
1439 memalign
1440 mkstemp
1441 mmap
1442 mprotect
1443 nanosleep
1444 posix_memalign
1445 sched_getaffinity
1446 SetConsoleTextAttribute
1447 setmode
1448 setrlimit
1449 Sleep
1450 strerror_r
1451 strptime
1452 sysconf
1453 sysctl
1454 usleep
1455 VirtualAlloc
1456 "
1457
1458 TOOLCHAIN_FEATURES="
1459 asm_mod_q
1460 attribute_may_alias
1461 attribute_packed
1462 ebp_available
1463 ebx_available
1464 gnu_as
1465 ibm_asm
1466 inline_asm_labels
1467 pragma_deprecated
1468 symver_asm_label
1469 symver_gnu_asm
1470 vfp_args
1471 xform_asm
1472 xmm_clobbers
1473 "
1474
1475 TYPES_LIST="
1476 socklen_t
1477 struct_addrinfo
1478 struct_group_source_req
1479 struct_ip_mreq_source
1480 struct_ipv6_mreq
1481 struct_pollfd
1482 struct_rusage_ru_maxrss
1483 struct_sockaddr_in6
1484 struct_sockaddr_sa_len
1485 struct_sockaddr_storage
1486 struct_v4l2_frmivalenum_discrete
1487 "
1488
1489 HAVE_LIST="
1490 $ARCH_EXT_LIST
1491 $(add_suffix _external $ARCH_EXT_LIST)
1492 $(add_suffix _inline $ARCH_EXT_LIST)
1493 $ARCH_FEATURES
1494 $ATOMICS_LIST
1495 $BUILTIN_LIST
1496 $HAVE_LIST_CMDLINE
1497 $HAVE_LIST_PUB
1498 $HEADERS_LIST
1499 $MATH_FUNCS
1500 $SYSTEM_FUNCS
1501 $THREADS_LIST
1502 $TOOLCHAIN_FEATURES
1503 $TYPES_LIST
1504 atomics_native
1505 dos_paths
1506 dxva2_lib
1507 libc_msvcrt
1508 libdc1394_1
1509 libdc1394_2
1510 sdl
1511 threads
1512 vdpau_x11
1513 xlib
1514 "
1515
1516 # options emitted with CONFIG_ prefix but not available on the command line
1517 CONFIG_EXTRA="
1518 aandcttables
1519 ac3dsp
1520 audio_frame_queue
1521 cabac
1522 dsputil
1523 gcrypt
1524 golomb
1525 gplv3
1526 h263dsp
1527 h264chroma
1528 h264dsp
1529 h264pred
1530 h264qpel
1531 hpeldsp
1532 huffman
1533 intrax8
1534 lgplv3
1535 lpc
1536 mpegaudio
1537 mpegaudiodsp
1538 mpegvideo
1539 mpegvideoenc
1540 nettle
1541 rangecoder
1542 riffdec
1543 riffenc
1544 rtpdec
1545 rtpenc_chain
1546 sinewin
1547 tpeldsp
1548 videodsp
1549 vp3dsp
1550 "
1551
1552 CMDLINE_SELECT="
1553 $ARCH_EXT_LIST
1554 $CONFIG_LIST
1555 $HAVE_LIST_CMDLINE
1556 $THREADS_LIST
1557 asm
1558 cross_compile
1559 debug
1560 extra_warnings
1561 logging
1562 lto
1563 optimizations
1564 "
1565
1566 PATHS_LIST="
1567 bindir
1568 datadir
1569 docdir
1570 incdir
1571 libdir
1572 mandir
1573 prefix
1574 shlibdir
1575 "
1576
1577 CMDLINE_SET="
1578 $PATHS_LIST
1579 ar
1580 arch
1581 as
1582 build_suffix
1583 cc
1584 cpu
1585 cross_prefix
1586 dep_cc
1587 extra_version
1588 host_cc
1589 host_cflags
1590 host_ld
1591 host_ldflags
1592 host_libs
1593 host_os
1594 ld
1595 logfile
1596 malloc_prefix
1597 nm
1598 optflags
1599 pkg_config
1600 pkg_config_flags
1601 random_seed
1602 samples
1603 sysinclude
1604 sysroot
1605 target_exec
1606 target_os
1607 target_path
1608 target_samples
1609 toolchain
1610 "
1611
1612 CMDLINE_APPEND="
1613 extra_cflags
1614 host_cppflags
1615 "
1616
1617 # code dependency declarations
1618
1619 # architecture extensions
1620
1621 armv5te_deps="arm"
1622 armv6_deps="arm"
1623 armv6t2_deps="arm"
1624 armv8_deps="aarch64"
1625 neon_deps_any="aarch64 arm"
1626 vfp_deps_any="aarch64 arm"
1627 vfpv3_deps="vfp"
1628
1629 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1630
1631 altivec_deps="ppc"
1632 ppc4xx_deps="ppc"
1633
1634 cpunop_deps="i686"
1635 x86_64_select="i686"
1636 x86_64_suggest="fast_cmov"
1637
1638 amd3dnow_deps="mmx"
1639 amd3dnowext_deps="amd3dnow"
1640 i686_deps="x86"
1641 mmx_deps="x86"
1642 mmxext_deps="mmx"
1643 sse_deps="mmxext"
1644 sse2_deps="sse"
1645 sse3_deps="sse2"
1646 ssse3_deps="sse3"
1647 sse4_deps="ssse3"
1648 sse42_deps="sse4"
1649 avx_deps="sse42"
1650 xop_deps="avx"
1651 fma3_deps="avx"
1652 fma4_deps="avx"
1653 avx2_deps="avx"
1654
1655 mmx_external_deps="yasm"
1656 mmx_inline_deps="inline_asm"
1657 mmx_suggest="mmx_external mmx_inline"
1658
1659 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1660 eval dep=\$${ext}_deps
1661 eval ${ext}_external_deps='"${dep}_external"'
1662 eval ${ext}_inline_deps='"${dep}_inline"'
1663 eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1664 done
1665
1666 aligned_stack_if_any="aarch64 ppc x86"
1667 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1668 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1669 fast_unaligned_if_any="aarch64 ppc x86"
1670
1671 need_memalign="altivec neon sse"
1672
1673 # system capabilities
1674 log2_deps="!libc_msvcrt"
1675
1676 symver_if_any="symver_asm_label symver_gnu_asm"
1677
1678 # threading support
1679 atomics_gcc_if="sync_val_compare_and_swap"
1680 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1681 atomics_win32_if="MemoryBarrier"
1682 atomics_native_if_any="$ATOMICS_LIST"
1683 w32threads_deps="atomics_native"
1684 threads_if_any="$THREADS_LIST"
1685
1686 # subsystems
1687 dct_select="rdft"
1688 error_resilience_select="dsputil"
1689 mdct_select="fft"
1690 rdft_select="fft"
1691 mpegaudio_select="mpegaudiodsp"
1692 mpegaudiodsp_select="dct"
1693 mpegvideo_select="dsputil hpeldsp videodsp"
1694 mpegvideoenc_select="dsputil mpegvideo"
1695
1696 # decoders / encoders
1697 aac_decoder_select="mdct sinewin"
1698 aac_encoder_select="audio_frame_queue mdct sinewin"
1699 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1700 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1701 ac3_encoder_select="mdct ac3dsp dsputil"
1702 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1703 aic_decoder_select="dsputil golomb"
1704 alac_encoder_select="lpc"
1705 als_decoder_select="dsputil"
1706 amrnb_decoder_select="lsp"
1707 amrwb_decoder_select="lsp"
1708 amv_decoder_select="sp5x_decoder"
1709 ape_decoder_select="dsputil"
1710 asv1_decoder_select="dsputil"
1711 asv1_encoder_select="dsputil"
1712 asv2_decoder_select="dsputil"
1713 asv2_encoder_select="dsputil"
1714 atrac1_decoder_select="mdct sinewin"
1715 atrac3_decoder_select="mdct"
1716 atrac3p_decoder_select="mdct sinewin"
1717 bink_decoder_select="dsputil hpeldsp"
1718 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1719 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1720 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1721 cllc_decoder_select="dsputil"
1722 comfortnoise_encoder_select="lpc"
1723 cook_decoder_select="dsputil mdct sinewin"
1724 cscd_decoder_select="lzo"
1725 cscd_decoder_suggest="zlib"
1726 dca_decoder_select="mdct"
1727 dnxhd_decoder_select="dsputil"
1728 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1729 dvvideo_decoder_select="dsputil"
1730 dvvideo_encoder_select="dsputil"
1731 dxa_decoder_deps="zlib"
1732 eac3_decoder_select="ac3_decoder"
1733 eac3_encoder_select="ac3_encoder"
1734 eamad_decoder_select="aandcttables dsputil mpegvideo"
1735 eatgq_decoder_select="aandcttables dsputil"
1736 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
1737 exr_decoder_deps="zlib"
1738 ffv1_decoder_select="golomb rangecoder"
1739 ffv1_encoder_select="rangecoder"
1740 ffvhuff_decoder_select="huffyuv_decoder"
1741 ffvhuff_encoder_select="huffyuv_encoder"
1742 fic_decoder_select="golomb"
1743 flac_decoder_select="golomb"
1744 flac_encoder_select="dsputil golomb lpc"
1745 flashsv_decoder_deps="zlib"
1746 flashsv_encoder_deps="zlib"
1747 flashsv2_decoder_deps="zlib"
1748 flv_decoder_select="h263_decoder"
1749 flv_encoder_select="h263_encoder"
1750 fourxm_decoder_select="dsputil"
1751 fraps_decoder_select="dsputil huffman"
1752 g2m_decoder_deps="zlib"
1753 g2m_decoder_select="dsputil"
1754 h261_decoder_select="error_resilience mpegvideo"
1755 h261_encoder_select="aandcttables mpegvideoenc"
1756 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1757 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1758 h263i_decoder_select="h263_decoder"
1759 h263p_encoder_select="h263_encoder"
1760 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1761 h264_decoder_suggest="error_resilience"
1762 hevc_decoder_select="cabac dsputil golomb videodsp"
1763 huffyuv_decoder_select="dsputil"
1764 huffyuv_encoder_select="dsputil huffman"
1765 iac_decoder_select="imc_decoder"
1766 imc_decoder_select="dsputil fft mdct sinewin"
1767 indeo3_decoder_select="hpeldsp"
1768 interplay_video_decoder_select="hpeldsp"
1769 jpegls_decoder_select="golomb mjpeg_decoder"
1770 jpegls_encoder_select="golomb"
1771 jv_decoder_select="dsputil"
1772 lagarith_decoder_select="dsputil"
1773 ljpeg_encoder_select="aandcttables mpegvideoenc"
1774 loco_decoder_select="golomb"
1775 mdec_decoder_select="dsputil error_resilience mpegvideo"
1776 metasound_decoder_select="lsp mdct sinewin"
1777 mimic_decoder_select="dsputil hpeldsp"
1778 mjpeg_decoder_select="dsputil hpeldsp"
1779 mjpeg_encoder_select="aandcttables mpegvideoenc"
1780 mjpegb_decoder_select="mjpeg_decoder"
1781 mlp_decoder_select="mlp_parser"
1782 motionpixels_decoder_select="dsputil"
1783 mp1_decoder_select="mpegaudio"
1784 mp1float_decoder_select="mpegaudio"
1785 mp2_decoder_select="mpegaudio"
1786 mp2float_decoder_select="mpegaudio"
1787 mp3_decoder_select="mpegaudio"
1788 mp3adu_decoder_select="mpegaudio"
1789 mp3adufloat_decoder_select="mpegaudio"
1790 mp3float_decoder_select="mpegaudio"
1791 mp3on4_decoder_select="mpegaudio"
1792 mp3on4float_decoder_select="mpegaudio"
1793 mpc7_decoder_select="dsputil mpegaudiodsp"
1794 mpc8_decoder_select="mpegaudiodsp"
1795 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1796 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1797 mpeg1video_decoder_select="error_resilience mpegvideo"
1798 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1799 mpeg2video_decoder_select="error_resilience mpegvideo"
1800 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1801 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1802 mpeg4_encoder_select="h263_encoder"
1803 msmpeg4v1_decoder_select="h263_decoder"
1804 msmpeg4v2_decoder_select="h263_decoder"
1805 msmpeg4v2_encoder_select="h263_encoder"
1806 msmpeg4v3_decoder_select="h263_decoder"
1807 msmpeg4v3_encoder_select="h263_encoder"
1808 mss2_decoder_select="error_resilience vc1_decoder"
1809 mxpeg_decoder_select="mjpeg_decoder"
1810 nellymoser_decoder_select="mdct sinewin"
1811 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1812 nuv_decoder_select="dsputil lzo"
1813 on2avc_decoder_select="mdct"
1814 png_decoder_deps="zlib"
1815 png_encoder_deps="zlib"
1816 png_encoder_select="dsputil"
1817 prores_decoder_select="dsputil"
1818 prores_encoder_select="dsputil"
1819 qcelp_decoder_select="lsp"
1820 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1821 ra_144_encoder_select="audio_frame_queue lpc"
1822 ralf_decoder_select="golomb"
1823 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1824 rv10_encoder_select="h263_encoder"
1825 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1826 rv20_encoder_select="h263_encoder"
1827 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1828 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1829 shorten_decoder_select="golomb"
1830 sipr_decoder_select="lsp"
1831 sp5x_decoder_select="mjpeg_decoder"
1832 svq1_decoder_select="hpeldsp"
1833 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1834 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1835 svq3_decoder_suggest="zlib"
1836 tak_decoder_select="dsputil"
1837 theora_decoder_select="vp3_decoder"
1838 thp_decoder_select="mjpeg_decoder"
1839 tiff_decoder_suggest="zlib"
1840 tiff_encoder_suggest="zlib"
1841 truehd_decoder_select="mlp_decoder"
1842 truemotion2_decoder_select="dsputil"
1843 truespeech_decoder_select="dsputil"
1844 tscc_decoder_deps="zlib"
1845 twinvq_decoder_select="mdct lsp sinewin"
1846 utvideo_decoder_select="dsputil"
1847 utvideo_encoder_select="dsputil huffman"
1848 vble_decoder_select="dsputil"
1849 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1850 vc1image_decoder_select="vc1_decoder"
1851 vorbis_decoder_select="mdct"
1852 vorbis_encoder_select="mdct"
1853 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1854 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1855 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1856 vp6a_decoder_select="vp6_decoder"
1857 vp6f_decoder_select="vp6_decoder"
1858 vp7_decoder_select="h264pred videodsp"
1859 vp8_decoder_select="h264pred videodsp"
1860 vp9_decoder_select="videodsp"
1861 webp_decoder_select="vp8_decoder"
1862 wmapro_decoder_select="mdct sinewin"
1863 wmav1_decoder_select="mdct sinewin"
1864 wmav1_encoder_select="mdct sinewin"
1865 wmav2_decoder_select="mdct sinewin"
1866 wmav2_encoder_select="mdct sinewin"
1867 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1868 wmv1_decoder_select="h263_decoder"
1869 wmv1_encoder_select="h263_encoder"
1870 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1871 wmv2_encoder_select="h263_encoder"
1872 wmv3_decoder_select="vc1_decoder"
1873 wmv3image_decoder_select="wmv3_decoder"
1874 zerocodec_decoder_deps="zlib"
1875 zlib_decoder_deps="zlib"
1876 zlib_encoder_deps="zlib"
1877 zmbv_decoder_deps="zlib"
1878 zmbv_encoder_deps="zlib"
1879
1880 # hardware accelerators
1881 dxva2_deps="dxva2api_h"
1882 vaapi_deps="va_va_h"
1883 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1884 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1885 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1886
1887 h263_vaapi_hwaccel_deps="vaapi"
1888 h263_vaapi_hwaccel_select="h263_decoder"
1889 h263_vdpau_hwaccel_deps="vdpau"
1890 h263_vdpau_hwaccel_select="h263_decoder"
1891 h264_dxva2_hwaccel_deps="dxva2"
1892 h264_dxva2_hwaccel_select="h264_decoder"
1893 h264_vaapi_hwaccel_deps="vaapi"
1894 h264_vaapi_hwaccel_select="h264_decoder"
1895 h264_vda_hwaccel_deps="vda"
1896 h264_vda_hwaccel_select="h264_decoder"
1897 h264_vdpau_hwaccel_deps="vdpau"
1898 h264_vdpau_hwaccel_select="h264_decoder"
1899 mpeg1_vdpau_hwaccel_deps="vdpau"
1900 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1901 mpeg2_dxva2_hwaccel_deps="dxva2"
1902 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1903 mpeg2_vaapi_hwaccel_deps="vaapi"
1904 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1905 mpeg2_vdpau_hwaccel_deps="vdpau"
1906 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1907 mpeg4_vaapi_hwaccel_deps="vaapi"
1908 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1909 mpeg4_vdpau_hwaccel_deps="vdpau"
1910 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1911 vc1_dxva2_hwaccel_deps="dxva2"
1912 vc1_dxva2_hwaccel_select="vc1_decoder"
1913 vc1_vaapi_hwaccel_deps="vaapi"
1914 vc1_vaapi_hwaccel_select="vc1_decoder"
1915 vc1_vdpau_hwaccel_deps="vdpau"
1916 vc1_vdpau_hwaccel_select="vc1_decoder"
1917 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1918 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1919 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1920
1921 # parsers
1922 h264_parser_select="h264_decoder"
1923 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1924 mpegvideo_parser_select="error_resilience mpegvideo"
1925 vc1_parser_select="mpegvideo"
1926
1927 # external libraries
1928 libfaac_encoder_deps="libfaac"
1929 libfaac_encoder_select="audio_frame_queue"
1930 libfdk_aac_decoder_deps="libfdk_aac"
1931 libfdk_aac_encoder_deps="libfdk_aac"
1932 libfdk_aac_encoder_select="audio_frame_queue"
1933 libgsm_decoder_deps="libgsm"
1934 libgsm_encoder_deps="libgsm"
1935 libgsm_ms_decoder_deps="libgsm"
1936 libgsm_ms_encoder_deps="libgsm"
1937 libilbc_decoder_deps="libilbc"
1938 libilbc_encoder_deps="libilbc"
1939 libmp3lame_encoder_deps="libmp3lame"
1940 libmp3lame_encoder_select="audio_frame_queue"
1941 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1942 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1943 libopencore_amrnb_encoder_select="audio_frame_queue"
1944 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1945 libopenjpeg_decoder_deps="libopenjpeg"
1946 libopenjpeg_encoder_deps="libopenjpeg"
1947 libopus_decoder_deps="libopus"
1948 libopus_encoder_deps="libopus"
1949 libopus_encoder_select="audio_frame_queue"
1950 libschroedinger_decoder_deps="libschroedinger"
1951 libschroedinger_encoder_deps="libschroedinger"
1952 libspeex_decoder_deps="libspeex"
1953 libspeex_encoder_deps="libspeex"
1954 libspeex_encoder_select="audio_frame_queue"
1955 libtheora_encoder_deps="libtheora"
1956 libtwolame_encoder_deps="libtwolame"
1957 libvo_aacenc_encoder_deps="libvo_aacenc"
1958 libvo_aacenc_encoder_select="audio_frame_queue"
1959 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1960 libvorbis_encoder_deps="libvorbis"
1961 libvorbis_encoder_select="audio_frame_queue"
1962 libvpx_vp8_decoder_deps="libvpx"
1963 libvpx_vp8_encoder_deps="libvpx"
1964 libvpx_vp9_decoder_deps="libvpx"
1965 libvpx_vp9_encoder_deps="libvpx"
1966 libwavpack_encoder_deps="libwavpack"
1967 libwebp_encoder_deps="libwebp"
1968 libx264_encoder_deps="libx264"
1969 libx265_encoder_deps="libx265"
1970 libxavs_encoder_deps="libxavs"
1971 libxvid_encoder_deps="libxvid"
1972
1973 # demuxers / muxers
1974 ac3_demuxer_select="ac3_parser"
1975 asf_demuxer_select="riffdec"
1976 asf_muxer_select="riffenc"
1977 asf_stream_muxer_select="asf_muxer"
1978 avi_demuxer_select="riffdec"
1979 avi_muxer_select="riffenc"
1980 avisynth_demuxer_deps="avisynth"
1981 avisynth_demuxer_select="riffdec"
1982 caf_demuxer_select="riffdec"
1983 dirac_demuxer_select="dirac_parser"
1984 dxa_demuxer_select="riffdec"
1985 eac3_demuxer_select="ac3_parser"
1986 f4v_muxer_select="mov_muxer"
1987 flac_demuxer_select="flac_parser"
1988 hds_muxer_select="flv_muxer"
1989 hls_muxer_select="mpegts_muxer"
1990 ipod_muxer_select="mov_muxer"
1991 ismv_muxer_select="mov_muxer"
1992 matroska_audio_muxer_select="matroska_muxer"
1993 matroska_demuxer_select="riffdec"
1994 matroska_demuxer_suggest="bzlib lzo zlib"
1995 matroska_muxer_select="riffenc"
1996 mmf_muxer_select="riffenc"
1997 mov_demuxer_select="riffdec"
1998 mov_demuxer_suggest="zlib"
1999 mov_muxer_select="riffenc rtpenc_chain"
2000 mp3_demuxer_select="mpegaudio_parser"
2001 mp4_muxer_select="mov_muxer"
2002 mpegts_muxer_select="adts_muxer latm_muxer"
2003 mpegtsraw_demuxer_select="mpegts_demuxer"
2004 mxf_d10_muxer_select="mxf_muxer"
2005 nut_muxer_select="riffenc"
2006 nuv_demuxer_select="riffdec"
2007 ogg_demuxer_select="golomb"
2008 psp_muxer_select="mov_muxer"
2009 rtp_demuxer_select="sdp_demuxer"
2010 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2011 rtsp_demuxer_select="http_protocol rtpdec"
2012 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2013 sap_demuxer_select="sdp_demuxer"
2014 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2015 sdp_demuxer_select="rtpdec"
2016 smoothstreaming_muxer_select="ismv_muxer"
2017 spdif_muxer_select="aac_parser"
2018 tak_demuxer_select="tak_parser"
2019 tg2_muxer_select="mov_muxer"
2020 tgp_muxer_select="mov_muxer"
2021 w64_demuxer_select="wav_demuxer"
2022 wav_demuxer_select="riffdec"
2023 wav_muxer_select="riffenc"
2024 webm_muxer_select="riffenc"
2025 wtv_demuxer_select="riffdec"
2026 xmv_demuxer_select="riffdec"
2027 xwma_demuxer_select="riffdec"
2028
2029 # indevs / outdevs
2030 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2031 alsa_outdev_deps="alsa_asoundlib_h"
2032 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2033 dv1394_indev_deps="dv1394"
2034 dv1394_indev_select="dv_demuxer"
2035 fbdev_indev_deps="linux_fb_h"
2036 jack_indev_deps="jack_jack_h pthreads"
2037 libcdio_indev_deps="libcdio"
2038 libdc1394_indev_deps="libdc1394"
2039 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2040 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2041 pulse_indev_deps="libpulse"
2042 sndio_indev_deps="sndio_h"
2043 sndio_outdev_deps="sndio_h"
2044 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2045 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2046 vfwcap_indev_extralibs="-lavicap32"
2047 x11grab_indev_deps="x11grab XShmCreateImage"
2048
2049 # protocols
2050 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2051 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2052 ffrtmpcrypt_protocol_select="tcp_protocol"
2053 ffrtmphttp_protocol_deps="!librtmp_protocol"
2054 ffrtmphttp_protocol_select="http_protocol"
2055 gopher_protocol_select="network"
2056 http_protocol_select="tcp_protocol"
2057 httpproxy_protocol_select="tcp_protocol"
2058 https_protocol_select="tls_protocol"
2059 librtmp_protocol_deps="librtmp"
2060 librtmpe_protocol_deps="librtmp"
2061 librtmps_protocol_deps="librtmp"
2062 librtmpt_protocol_deps="librtmp"
2063 librtmpte_protocol_deps="librtmp"
2064 mmsh_protocol_select="http_protocol"
2065 mmst_protocol_select="network"
2066 rtmp_protocol_deps="!librtmp_protocol"
2067 rtmp_protocol_select="tcp_protocol"
2068 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2069 rtmps_protocol_deps="!librtmp_protocol"
2070 rtmps_protocol_select="tls_protocol"
2071 rtmpt_protocol_select="ffrtmphttp_protocol"
2072 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2073 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2074 rtp_protocol_select="udp_protocol"
2075 sctp_protocol_deps="struct_sctp_event_subscribe"
2076 sctp_protocol_select="network"
2077 srtp_protocol_select="rtp_protocol"
2078 tcp_protocol_select="network"
2079 tls_protocol_deps_any="openssl gnutls"
2080 tls_protocol_select="tcp_protocol"
2081 udp_protocol_select="network"
2082 unix_protocol_deps="sys_un_h"
2083 unix_protocol_select="network"
2084
2085 # filters
2086 blackframe_filter_deps="gpl"
2087 boxblur_filter_deps="gpl"
2088 cropdetect_filter_deps="gpl"
2089 delogo_filter_deps="gpl"
2090 drawtext_filter_deps="libfreetype"
2091 frei0r_filter_deps="frei0r dlopen"
2092 frei0r_filter_extralibs='$ldl'
2093 frei0r_src_filter_deps="frei0r dlopen"
2094 frei0r_src_filter_extralibs='$ldl'
2095 hqdn3d_filter_deps="gpl"
2096 interlace_filter_deps="gpl"
2097 ocv_filter_deps="libopencv"
2098 resample_filter_deps="avresample"
2099 scale_filter_deps="swscale"
2100
2101 # examples
2102 avcodec_example_deps="avcodec avutil"
2103 filter_audio_example_deps="avfilter avutil"
2104 metadata_example_deps="avformat avutil"
2105 output_example_deps="avcodec avformat avutil swscale"
2106 transcode_aac_example_deps="avcodec avformat avresample"
2107
2108 # libraries
2109 avcodec_deps="avutil"
2110 avdevice_deps="avutil avcodec avformat"
2111 avfilter_deps="avutil"
2112 avformat_deps="avutil avcodec"
2113 avresample_deps="avutil"
2114 swscale_deps="avutil"
2115
2116 # programs
2117 avconv_deps="avcodec avfilter avformat avresample swscale"
2118 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2119 fps_filter null_filter resample_filter scale_filter
2120 setpts_filter trim_filter"
2121 avplay_deps="avcodec avformat avresample swscale sdl"
2122 avplay_libs='$sdl_libs'
2123 avplay_select="rdft"
2124 avprobe_deps="avcodec avformat"
2125 avserver_deps="avformat fork !shared"
2126 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2127
2128 # documentation
2129 pod2man_deps="doc"
2130 texi2html_deps="doc"
2131
2132 # default parameters
2133
2134 logfile="config.log"
2135
2136 # installation paths
2137 prefix_default="/usr/local"
2138 bindir_default='${prefix}/bin'
2139 datadir_default='${prefix}/share/avconv'
2140 docdir_default='${prefix}/share/doc/libav'
2141 incdir_default='${prefix}/include'
2142 libdir_default='${prefix}/lib'
2143 mandir_default='${prefix}/share/man'
2144 shlibdir_default="$libdir_default"
2145
2146 # toolchain
2147 ar_default="ar"
2148 cc_default="gcc"
2149 host_cc_default="gcc"
2150 cp_f="cp -f"
2151 ln_s="ln -s -f"
2152 nm_default="nm -g"
2153 objformat="elf"
2154 pkg_config_default=pkg-config
2155 ranlib="ranlib"
2156 strip="strip"
2157 yasmexe="yasm"
2158
2159 nogas=":"
2160
2161 # machine
2162 arch_default=$(uname -m)
2163 cpu="generic"
2164
2165 # OS
2166 target_os_default=$(tolower $(uname -s))
2167 host_os=$target_os_default
2168
2169 # configurable options
2170 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2171
2172 enable asm
2173 enable debug
2174 enable doc
2175 enable optimizations
2176 enable safe_bitstream_reader
2177 enable static
2178 enable swscale_alpha
2179
2180 # By default, enable only those hwaccels that have no external dependencies.
2181 enable dxva2 vdpau
2182
2183 # build settings
2184 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2185 LIBPREF="lib"
2186 LIBSUF=".a"
2187 FULLNAME='$(NAME)$(BUILDSUF)'
2188 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2189 SLIBPREF="lib"
2190 SLIBSUF=".so"
2191 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2192 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2193 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2194 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2195 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2196 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2197
2198 asflags_filter=echo
2199 cflags_filter=echo
2200 ldflags_filter=echo
2201
2202 AS_C='-c'
2203 AS_O='-o $@'
2204 CC_C='-c'
2205 CC_E='-E -o $@'
2206 CC_O='-o $@'
2207 LD_O='-o $@'
2208 LD_LIB='-l%'
2209 LD_PATH='-L'
2210 HOSTCC_C='-c'
2211 HOSTCC_E='-E -o $@'
2212 HOSTCC_O='-o $@'
2213 HOSTLD_O='-o $@'
2214
2215 host_libs='-lm'
2216 host_cflags_filter=echo
2217 host_ldflags_filter=echo
2218
2219 target_path='$(CURDIR)'
2220
2221 # since the object filename is not given with the -MM flag, the compiler
2222 # is only able to print the basename, and we must add the path ourselves
2223 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2224 DEPFLAGS='-MM'
2225
2226 # find source path
2227 if test -f configure; then
2228 source_path=.
2229 else
2230 source_path=$(cd $(dirname "$0"); pwd)
2231 echo "$source_path" | grep -q '[[:blank:]]' &&
2232 die "Out of tree builds are impossible with whitespace in source path."
2233 test -e "$source_path/config.h" &&
2234 die "Out of tree builds are impossible with config.h in source dir."
2235 fi
2236
2237 for v in "$@"; do
2238 r=${v#*=}
2239 l=${v%"$r"}
2240 r=$(sh_quote "$r")
2241 LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2242 done
2243
2244 find_things(){
2245 thing=$1
2246 pattern=$2
2247 file=$source_path/$3
2248 sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2249 }
2250
2251 ENCODER_LIST=$(find_things encoder ENC libavcodec/allcodecs.c)
2252 DECODER_LIST=$(find_things decoder DEC libavcodec/allcodecs.c)
2253 HWACCEL_LIST=$(find_things hwaccel HWACCEL libavcodec/allcodecs.c)
2254 PARSER_LIST=$(find_things parser PARSER libavcodec/allcodecs.c)
2255 BSF_LIST=$(find_things bsf BSF libavcodec/allcodecs.c)
2256 MUXER_LIST=$(find_things muxer _MUX libavformat/allformats.c)
2257 DEMUXER_LIST=$(find_things demuxer DEMUX libavformat/allformats.c)
2258 OUTDEV_LIST=$(find_things outdev OUTDEV libavdevice/alldevices.c)
2259 INDEV_LIST=$(find_things indev _IN libavdevice/alldevices.c)
2260 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2261 FILTER_LIST=$(find_things filter FILTER libavfilter/allfilters.c)
2262
2263 ALL_COMPONENTS="
2264 $BSF_LIST
2265 $DECODER_LIST
2266 $DEMUXER_LIST
2267 $ENCODER_LIST
2268 $FILTER_LIST
2269 $HWACCEL_LIST
2270 $INDEV_LIST
2271 $MUXER_LIST
2272 $OUTDEV_LIST
2273 $PARSER_LIST
2274 $PROTOCOL_LIST
2275 "
2276
2277 for n in $COMPONENT_LIST; do
2278 v=$(toupper ${n%s})_LIST
2279 eval enable \$$v
2280 eval ${n}_if_any="\$$v"
2281 done
2282
2283 enable $ARCH_EXT_LIST
2284
2285 die_unknown(){
2286 echo "Unknown option \"$1\"."
2287 echo "See $0 --help for available options."
2288 exit 1
2289 }
2290
2291 print_3_columns() {
2292 cat | tr ' ' '\n' | sort | pr -r -3 -t
2293 }
2294
2295 show_list() {
2296 suffix=_$1
2297 shift
2298 echo $* | sed s/$suffix//g | print_3_columns
2299 exit 0
2300 }
2301
2302 rand_list(){
2303 IFS=', '
2304 set -- $*
2305 unset IFS
2306 for thing; do
2307 comp=${thing%:*}
2308 prob=${thing#$comp}
2309 prob=${prob#:}
2310 is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2311 echo "prob ${prob:-0.5}"
2312 printf '%s\n' $comp
2313 done
2314 }
2315
2316 do_random(){
2317 action=$1
2318 shift
2319 random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2320 $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2321 }
2322
2323 for opt do
2324 optval="${opt#*=}"
2325 case "$opt" in
2326 --extra-ldflags=*)
2327 add_ldflags $optval
2328 ;;
2329 --extra-libs=*)
2330 add_extralibs $optval
2331 ;;
2332 --disable-devices)
2333 disable $INDEV_LIST $OUTDEV_LIST
2334 ;;
2335 --enable-debug=*)
2336 debuglevel="$optval"
2337 ;;
2338 --disable-programs)
2339 disable $PROGRAM_LIST
2340 ;;
2341 --disable-everything)
2342 map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2343 ;;
2344 --disable-all)
2345 map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2346 disable $LIBRARY_LIST $PROGRAM_LIST doc
2347 ;;
2348 --enable-random|--disable-random)
2349 action=${opt%%-random}
2350 do_random ${action#--} $COMPONENT_LIST
2351 ;;
2352 --enable-random=*|--disable-random=*)
2353 action=${opt%%-random=*}
2354 do_random ${action#--} $optval
2355 ;;
2356 --enable-*=*|--disable-*=*)
2357 eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2358 is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2359 eval list=\$$(toupper $thing)_LIST
2360 name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2361 $action $(filter "$name" $list)
2362 ;;
2363 --enable-?*|--disable-?*)
2364 eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2365 if is_in $option $COMPONENT_LIST; then
2366 test $action = disable && action=unset
2367 eval $action \$$(toupper ${option%s})_LIST
2368 elif is_in $option $CMDLINE_SELECT; then
2369 $action $option
2370 else
2371 die_unknown $opt
2372 fi
2373 ;;
2374 --list-*)
2375 NAME="${opt#--list-}"
2376 is_in $NAME $COMPONENT_LIST || die_unknown $opt
2377 NAME=${NAME%s}
2378 eval show_list $NAME \$$(toupper $NAME)_LIST
2379 ;;
2380 --help|-h) show_help
2381 ;;
2382 *)
2383 optname="${opt%%=*}"
2384 optname="${optname#--}"
2385 optname=$(echo "$optname" | sed 's/-/_/g')
2386 if is_in $optname $CMDLINE_SET; then
2387 eval $optname='$optval'
2388 elif is_in $optname $CMDLINE_APPEND; then
2389 append $optname "$optval"
2390 else
2391 die_unknown $opt
2392 fi
2393 ;;
2394 esac
2395 done
2396
2397 disabled logging && logfile=/dev/null
2398
2399 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2400 set >> $logfile
2401
2402 test -n "$cross_prefix" && enable cross_compile
2403
2404 if enabled cross_compile; then
2405 test -n "$arch" && test -n "$target_os" ||
2406 die "Must specify target arch and OS when cross-compiling"
2407 fi
2408
2409 ar_default="${cross_prefix}${ar_default}"
2410 cc_default="${cross_prefix}${cc_default}"
2411 nm_default="${cross_prefix}${nm_default}"
2412 pkg_config_default="${cross_prefix}${pkg_config_default}"
2413 ranlib="${cross_prefix}${ranlib}"
2414 strip="${cross_prefix}${strip}"
2415
2416 sysinclude_default="${sysroot}/usr/include"
2417
2418 case "$toolchain" in
2419 clang-asan)
2420 cc_default="clang"
2421 add_cflags -fsanitize=address
2422 add_ldflags -fsanitize=address
2423 ;;
2424 clang-tsan)
2425 cc_default="clang"
2426 add_cflags -fsanitize=thread -pie
2427 add_ldflags -fsanitize=thread -pie
2428 ;;
2429 clang-usan)
2430 cc_default="clang"
2431 add_cflags -fsanitize=undefined
2432 add_ldflags -fsanitize=undefined
2433 ;;
2434 gcc-asan)
2435 cc_default="gcc"
2436 add_cflags -fsanitize=address
2437 add_ldflags -fsanitize=address
2438 ;;
2439 gcc-tsan)
2440 cc_default="gcc"
2441 add_cflags -fsanitize=thread -pie -fPIC
2442 add_ldflags -fsanitize=thread -pie -fPIC
2443 ;;
2444 gcc-usan)
2445 cc_default="gcc"
2446 add_cflags -fsanitize=undefined
2447 add_ldflags -fsanitize=undefined
2448 ;;
2449 valgrind-massif)
2450 target_exec_default="valgrind"
2451 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2452 ;;
2453 valgrind-memcheck)
2454 target_exec_default="valgrind"
2455 target_exec_args="--track-origins=yes --leak-check=full"
2456 ;;
2457 msvc)
2458 # Check whether the current MSVC version needs the C99 converter.
2459 # From MSVC 2013 (compiler major version 18) onwards, it does actually
2460 # support enough of C99 to build libav. Default to the new
2461 # behaviour if the regexp was unable to match anything, since this
2462 # successfully parses the version number of existing supported
2463 # versions that require the converter (MSVC 2010 and 2012).
2464 cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2465 if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2466 cc_default="cl"
2467 else
2468 cc_default="c99wrap cl"
2469 fi
2470 ld_default="link"
2471 nm_default="dumpbin -symbols"
2472 ar_default="lib"
2473 target_os_default="win32"
2474 # Use a relative path for TMPDIR. This makes sure all the
2475 # ffconf temp files are written with a relative path, avoiding
2476 # issues with msys/win32 path conversion for MSVC parameters
2477 # such as -Fo<file> or -out:<file>.
2478 TMPDIR=.
2479 ;;
2480 icl)
2481 cc_default="icl"
2482 ld_default="xilink"
2483 nm_default="dumpbin -symbols"
2484 ar_default="xilib"
2485 target_os_default="win32"
2486 TMPDIR=.
2487 ;;
2488 gcov)
2489 add_cflags -fprofile-arcs -ftest-coverage
2490 add_ldflags -fprofile-arcs -ftest-coverage
2491 ;;
2492 hardened)
2493 add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2494 add_ldflags -Wl,-z,relro -Wl,-z,now
2495 ;;
2496 ?*)
2497 die "Unknown toolchain $toolchain"
2498 ;;
2499 esac
2500
2501 set_default arch cc pkg_config sysinclude target_exec target_os
2502 enabled cross_compile || host_cc_default=$cc
2503 set_default host_cc
2504
2505 if ! $pkg_config --version >/dev/null 2>&1; then
2506 warn "$pkg_config not found, library detection may fail."
2507 pkg_config=false
2508 fi
2509
2510 exesuf() {
2511 case $1 in
2512 mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2513 esac
2514 }
2515
2516 EXESUF=$(exesuf $target_os)
2517 HOSTEXESUF=$(exesuf $host_os)
2518
2519 # set temporary file name
2520 : ${TMPDIR:=$TEMPDIR}
2521 : ${TMPDIR:=$TMP}
2522 : ${TMPDIR:=/tmp}
2523
2524 if ! check_cmd mktemp -u XXXXXX; then
2525 # simple replacement for missing mktemp
2526 # NOT SAFE FOR GENERAL USE
2527 mktemp(){
2528 echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2529 }
2530 fi
2531
2532 tmpfile(){
2533 tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2534 (set -C; exec > $tmp) 2>/dev/null ||
2535 die "Unable to create temporary file in $TMPDIR."
2536 append TMPFILES $tmp
2537 eval $1=$tmp
2538 }
2539
2540 trap 'rm -f -- $TMPFILES' EXIT
2541
2542 tmpfile TMPASM .asm
2543 tmpfile TMPC .c
2544 tmpfile TMPE $EXESUF
2545 tmpfile TMPH .h
2546 tmpfile TMPO .o
2547 tmpfile TMPS .S
2548 tmpfile TMPSH .sh
2549 tmpfile TMPV .ver
2550
2551 unset -f mktemp
2552
2553 chmod +x $TMPE
2554
2555 # make sure we can execute files in $TMPDIR
2556 cat > $TMPSH 2>> $logfile <<EOF
2557 #! /bin/sh
2558 EOF
2559 chmod +x $TMPSH >> $logfile 2>&1
2560 if ! $TMPSH >> $logfile 2>&1; then
2561 cat <<EOF
2562 Unable to create and execute files in $TMPDIR. Set the TMPDIR environment
2563 variable to another directory and make sure that it is not mounted noexec.
2564 EOF
2565 die "Sanity test failed."
2566 fi
2567
2568 ccc_flags(){
2569 for flag; do
2570 case $flag in
2571 -std=c99) echo -c99 ;;
2572 -mcpu=*) echo -arch ${flag#*=} ;;
2573 -mieee) echo -ieee ;;
2574 -O*|-fast) echo $flag ;;
2575 -fno-math-errno) echo -assume nomath_errno ;;
2576 -g) echo -g3 ;;
2577 -Wall) echo -msg_enable level2 ;;
2578 -Wno-pointer-sign) echo -msg_disable ptrmismatch1 ;;
2579 -Wl,*) echo $flag ;;
2580 -f*|-W*) ;;
2581 *) echo $flag ;;
2582 esac
2583 done
2584 }
2585
2586 cparser_flags(){
2587 for flag; do
2588 case $flag in
2589 -Wno-switch) echo -Wno-switch-enum ;;
2590 -Wno-format-zero-length) ;;
2591 -Wdisabled-optimization) ;;
2592 -Wno-pointer-sign) echo -Wno-other ;;
2593 *) echo $flag ;;
2594 esac
2595 done
2596 }
2597
2598 msvc_common_flags(){
2599 for flag; do
2600 case $flag in
2601 # In addition to specifying certain flags under the compiler
2602 # specific filters, they must be specified here as well or else the
2603 # generic catch all at the bottom will print the original flag.
2604 -Wall) ;;
2605 -std=c99) ;;
2606 # Common flags
2607 -fomit-frame-pointer) ;;
2608 -g) echo -Z7 ;;
2609 -fno-math-errno) ;;
2610 -fno-common) ;;
2611 -fno-signed-zeros) ;;
2612 -fPIC) ;;
2613 -mthumb) ;;
2614 -march=*) ;;
2615 -lz) echo zlib.lib ;;
2616 -lavifil32) echo vfw32.lib ;;
2617 -lavicap32) echo vfw32.lib user32.lib ;;
2618 -l*) echo ${flag#-l}.lib ;;
2619 *) echo $flag ;;
2620 esac
2621 done
2622 }
2623
2624 msvc_flags(){
2625 msvc_common_flags "$@"
2626 for flag; do
2627 case $flag in
2628 -Wall) echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2629 -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2630 -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2631 -wd4273 ;;
2632 esac
2633 done
2634 }
2635
2636 icl_flags(){
2637 msvc_common_flags "$@"
2638 for flag; do
2639 case $flag in
2640 # Despite what Intel's documentation says -Wall, which is supported
2641 # on Windows, does enable remarks so disable them here.
2642 -Wall) echo $flag -Qdiag-disable:remark ;;
2643 -std=c99) echo -Qstd=c99 ;;
2644 esac
2645 done
2646 }
2647
2648 pgi_flags(){
2649 for flag; do
2650 case $flag in
2651 -flto) echo -Mipa=fast,libopt,libinline,vestigial ;;
2652 -fomit-frame-pointer) echo -Mnoframe ;;
2653 -g) echo -gopt ;;
2654 *) echo $flag ;;
2655 esac
2656 done
2657 }
2658
2659 suncc_flags(){
2660 for flag; do
2661 case $flag in
2662 -march=*|-mcpu=*)
2663 case "${flag#*=}" in
2664 native) echo -xtarget=native ;;
2665 v9|niagara) echo -xarch=sparc ;;
2666 ultrasparc) echo -xarch=sparcvis ;;
2667 ultrasparc3|niagara2) echo -xarch=sparcvis2 ;;
2668 i586|pentium) echo -xchip=pentium ;;
2669 i686|pentiumpro|pentium2) echo -xtarget=pentium_pro ;;
2670 pentium3*|c3-2) echo -xtarget=pentium3 ;;
2671 pentium-m) echo -xarch=sse2 -xchip=pentium3 ;;
2672 pentium4*) echo -xtarget=pentium4 ;;
2673 prescott|nocona) echo -xarch=sse3 -xchip=pentium4 ;;
2674 *-sse3) echo -xarch=sse3 ;;
2675 core2) echo -xarch=ssse3 -xchip=core2 ;;
2676 corei7) echo -xarch=sse4_2 -xchip=nehalem ;;
2677 corei7-avx) echo -xarch=avx -xchip=sandybridge ;;
2678 amdfam10|barcelona|bdver*) echo -xarch=sse4_1 ;;
2679 athlon-4|athlon-[mx]p) echo -xarch=ssea ;;
2680 k8|opteron|athlon64|athlon-fx)
2681 echo -xarch=sse2a ;;
2682 athlon*) echo -xarch=pentium_proa ;;
2683 esac
2684 ;;
2685 -std=c99) echo -xc99 ;;
2686 -fomit-frame-pointer) echo -xregs=frameptr ;;
2687 -fPIC) echo -KPIC -xcode=pic32 ;;
2688 -W*,*) echo $flag ;;
2689 -f*-*|-W*|-mimpure-text) ;;
2690 -shared) echo -G ;;
2691 *) echo $flag ;;
2692 esac
2693 done
2694 }
2695
2696 tms470_flags(){
2697 for flag; do
2698 case $flag in
2699 -march=*|-mcpu=*)
2700 case "${flag#*=}" in
2701 armv7-a|cortex-a*) echo -mv=7a8 ;;
2702 armv7-r|cortex-r*) echo -mv=7r4 ;;
2703 armv7-m|cortex-m*) echo -mv=7m3 ;;
2704 armv6*|arm11*) echo -mv=6 ;;
2705 armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2706 echo -mv=5e ;;
2707 armv4*|arm7*|arm9[24]*) echo -mv=4 ;;
2708 esac
2709 ;;
2710 -mfpu=neon) echo --float_support=vfpv3 --neon ;;
2711 -mfpu=vfp) echo --float_support=vfpv2 ;;
2712 -mfpu=vfpv3) echo --float_support=vfpv3 ;;
2713 -mfpu=vfpv3-d16) echo --float_support=vfpv3d16 ;;
2714 -msoft-float) echo --float_support=vfplib ;;
2715 -O[0-3]|-mf=*) echo $flag ;;
2716 -g) echo -g -mn ;;
2717 -pds=*) echo $flag ;;
2718 -D*|-I*) echo $flag ;;
2719 --gcc|--abi=*) echo $flag ;;
2720 -me) echo $flag ;;
2721 esac
2722 done
2723 }
2724
2725 probe_cc(){
2726 pfx=$1
2727 _cc=$2
2728
2729 unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2730 unset _ld_o _ldflags _ld_lib _ld_path
2731 unset _depflags _DEPCMD _DEPFLAGS
2732 _flags_filter=echo
2733
2734 if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2735 _type=llvm_gcc
2736 gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2737 _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2738 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2739 _cflags_speed='-O3'
2740 _cflags_size='-Os'
2741 elif $_cc -v 2>&1 | grep -qi ^gcc; then
2742 _type=gcc
2743 gcc_version=$($_cc --version | head -n1)
2744 gcc_basever=$($_cc -dumpversion)
2745 gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2746 gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2747 _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2748 if ! $_cc -dumpversion | grep -q '^2\.'; then
2749 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2750 fi
2751 _cflags_speed='-O3'
2752 _cflags_size='-Os'
2753 elif $_cc --version 2>/dev/null | grep -q ^icc; then
2754 _type=icc
2755 _ident=$($_cc --version | head -n1)
2756 _depflags='-MMD'
2757 _cflags_speed='-O3'
2758 _cflags_size='-Os'
2759 _cflags_noopt='-O1'
2760 elif $_cc -v 2>&1 | grep -q xlc; then
2761 _type=xlc
2762 _ident=$($_cc -qversion 2>/dev/null | head -n1)
2763 _cflags_speed='-O5'
2764 _cflags_size='-O5 -qcompact'
2765 elif $_cc -V 2>/dev/null | grep -q Compaq; then
2766 _type=ccc
2767 _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2768 _DEPFLAGS='-M'
2769 _cflags_speed='-fast'
2770 _cflags_size='-O1'
2771 _flags_filter=ccc_flags
2772 elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2773 test -d "$sysroot" || die "No valid sysroot specified."
2774 _type=armcc
2775 _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2776 armcc_conf="$PWD/armcc.conf"
2777 $_cc --arm_linux_configure \
2778 --arm_linux_config_file="$armcc_conf" \
2779 --configure_sysroot="$sysroot" \
2780 --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2781 die "Error creating armcc configuration file."
2782 $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2783 _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2784 as_default="${cross_prefix}gcc"
2785 _depflags='-MMD'
2786 _cflags_speed='-O3'
2787 _cflags_size='-Os'
2788 elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2789 _type=tms470
2790 _ident=$($_cc -version | head -n1 | tr -s ' ')
2791 _flags='--gcc --abi=eabi -me'
2792 _cc_e='-ppl -fe=$@'
2793 _cc_o='-fe=$@'
2794 _depflags='-ppa -ppd=$(@:.o=.d)'
2795 _cflags_speed='-O3 -mf=5'
2796 _cflags_size='-O3 -mf=2'
2797 _flags_filter=tms470_flags
2798 elif $_cc -v 2>&1 | grep -q clang; then
2799 _type=clang
2800 _ident=$($_cc --version | head -n1)
2801 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2802 _cflags_speed='-O3'
2803 _cflags_size='-Os'
2804 elif $_cc -V 2>&1 | grep -q Sun; then
2805 _type=suncc
2806 _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2807 _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2808 _DEPFLAGS='-xM1 -xc99'
2809 _ldflags='-std=c99'
2810 _cflags_speed='-O5'
2811 _cflags_size='-O5 -xspace'
2812 _flags_filter=suncc_flags
2813 elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2814 _type=pathscale
2815 _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2816 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2817 _cflags_speed='-O2'
2818 _cflags_size='-Os'
2819 _flags_filter='filter_out -Wdisabled-optimization'
2820 elif $_cc -v 2>&1 | grep -q Open64; then
2821 _type=open64
2822 _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2823 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2824 _cflags_speed='-O2'
2825 _cflags_size='-Os'
2826 _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2827 elif $_cc -V 2>&1 | grep -q Portland; then
2828 _type=pgi
2829 _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2830 opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2831 _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2832 _cflags_size="-O2 -Munroll=c:1 $opt_common"
2833 _cflags_noopt="-O1"
2834 _flags_filter=pgi_flags
2835 elif $_cc 2>&1 | grep -q Microsoft; then
2836 _type=msvc
2837 _ident=$($cc 2>&1 | head -n1)
2838 _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2839 _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2840 _cflags_speed="-O2"
2841 _cflags_size="-O1"
2842 if $_cc 2>&1 | grep -q Linker; then
2843 _ld_o='-out:$@'
2844 else
2845 _ld_o='-Fe$@'
2846 fi
2847 _cc_o='-Fo$@'
2848 _cc_e='-P -Fi$@'
2849 _flags_filter=msvc_flags
2850 _ld_lib='lib%.a'
2851 _ld_path='-libpath:'
2852 _flags='-nologo'
2853 _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2854 if [ $pfx = hostcc ]; then
2855 append _cflags -Dsnprintf=_snprintf
2856 fi
2857 elif $_cc 2>&1 | grep -q Intel; then
2858 _type=icl
2859 _ident=$($cc 2>&1 | head -n1)
2860 _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2861 # Not only is O3 broken on 13.x+ but it is slower on all previous
2862 # versions (tested) as well.
2863 _cflags_speed="-O2"
2864 _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2865 if $_cc 2>&1 | grep -q Linker; then
2866 _ld_o='-out:$@'
2867 else
2868 _ld_o='-Fe$@'
2869 fi
2870 _cc_o='-Fo$@'
2871 _cc_e='-P'
2872 _flags_filter=icl_flags
2873 _ld_lib='lib%.a'
2874 _ld_path='-libpath:'
2875 # -Qdiag-error to make icl error when seeing certain unknown arguments
2876 _flags='-nologo -Qdiag-error:4044,10157'
2877 # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2878 # with MSVC which enables it by default.
2879 _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2880 if [ $pfx = hostcc ]; then
2881 append _cflags -Dsnprintf=_snprintf
2882 fi
2883 elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2884 _type=cparser
2885 _ident=$($_cc --version | head -n1)
2886 _depflags='-MMD'
2887 _cflags_speed='-O4'
2888 _cflags_size='-O2'
2889 _flags_filter=cparser_flags
2890 fi
2891
2892 eval ${pfx}_type=\$_type
2893 eval ${pfx}_ident=\$_ident
2894 }
2895
2896 set_ccvars(){
2897 eval ${1}_C=\${_cc_c-\${${1}_C}}
2898 eval ${1}_E=\${_cc_e-\${${1}_E}}
2899 eval ${1}_O=\${_cc_o-\${${1}_O}}
2900
2901 if [ -n "$_depflags" ]; then
2902 eval ${1}_DEPFLAGS=\$_depflags
2903 else
2904 eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2905 eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2906 eval DEP${1}FLAGS=\$_flags
2907 fi
2908 }
2909
2910 probe_cc cc "$cc"
2911 cflags_filter=$_flags_filter
2912 cflags_speed=$_cflags_speed
2913 cflags_size=$_cflags_size
2914 cflags_noopt=$_cflags_noopt
2915 add_cflags $_flags $_cflags
2916 cc_ldflags=$_ldflags
2917 set_ccvars CC
2918
2919 probe_cc hostcc "$host_cc"
2920 host_cflags_filter=$_flags_filter
2921 add_host_cflags $_flags $_cflags
2922 set_ccvars HOSTCC
2923
2924 test -n "$cc_type" && enable $cc_type ||
2925 warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2926
2927 : ${as_default:=$cc}
2928 : ${dep_cc_default:=$cc}
2929 : ${ld_default:=$cc}
2930 : ${host_ld_default:=$host_cc}
2931 set_default ar as dep_cc ld host_ld
2932
2933 probe_cc as "$as"
2934 asflags_filter=$_flags_filter
2935 add_asflags $_flags $_cflags
2936 set_ccvars AS
2937
2938 probe_cc ld "$ld"
2939 ldflags_filter=$_flags_filter
2940 add_ldflags $_flags $_ldflags
2941 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2942 LD_O=${_ld_o-$LD_O}
2943 LD_LIB=${_ld_lib-$LD_LIB}
2944 LD_PATH=${_ld_path-$LD_PATH}
2945
2946 probe_cc hostld "$host_ld"
2947 host_ldflags_filter=$_flags_filter
2948 add_host_ldflags $_flags $_ldflags
2949 HOSTLD_O=${_ld_o-$HOSTLD_O}
2950
2951 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2952 probe_cc depcc "$dep_cc"
2953 CCDEP=${_DEPCMD:-$DEPCMD}
2954 CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2955 DEPCCFLAGS=$_flags
2956 fi
2957
2958 if $ar 2>&1 | grep -q Microsoft; then
2959 arflags="-nologo"
2960 ar_o='-out:$@'
2961 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2962 arflags="rq"
2963 ar_o='$@'
2964 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2965 arflags='-Xany -r -c'
2966 ar_o='$@'
2967 else
2968 arflags="rc"
2969 ar_o='$@'
2970 fi
2971
2972 add_cflags $extra_cflags
2973 add_asflags $extra_cflags
2974
2975 if test -n "$sysroot"; then
2976 case "$cc_type" in
2977 gcc|llvm_gcc|clang)
2978 add_cppflags --sysroot="$sysroot"
2979 add_ldflags --sysroot="$sysroot"
2980 ;;
2981 tms470)
2982 add_cppflags -I"$sysinclude"
2983 add_ldflags --sysroot="$sysroot"
2984 ;;
2985 esac
2986 fi
2987
2988 if test "$cpu" = host; then
2989 enabled cross_compile &&
2990 die "--cpu=host makes no sense when cross-compiling."
2991
2992 case "$cc_type" in
2993 gcc|llvm_gcc)
2994 check_native(){
2995 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2996 sed -n "/cc1.*$1=/{
2997 s/.*$1=\\([^ ]*\\).*/\\1/
2998 p
2999 q
3000 }" $TMPE
3001 }
3002 cpu=$(check_native -march || check_native -mcpu)
3003 ;;
3004 esac
3005
3006 test "${cpu:-host}" = host &&
3007 die "--cpu=host not supported with compiler $cc"
3008 fi
3009
3010 # Deal with common $arch aliases
3011 case "$arch" in
3012 aarch64|arm64)
3013 arch="aarch64"
3014 ;;
3015 arm*)
3016 arch="arm"
3017 ;;
3018 mips*|IP*)
3019 arch="mips"
3020 ;;
3021 parisc*|hppa*)
3022 arch="parisc"
3023 ;;
3024 "Power Macintosh"|ppc*|powerpc*)
3025 arch="ppc"
3026 ;;
3027 s390|s390x)
3028 arch="s390"
3029 ;;
3030 sh4|sh)
3031 arch="sh4"
3032 ;;
3033 sun4u|sparc*)
3034 arch="sparc"
3035 ;;
3036 tilegx|tile-gx)
3037 arch="tilegx"
3038 ;;
3039 i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3040 arch="x86"
3041 ;;
3042 esac
3043
3044 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3045 enable $arch
3046
3047 # Add processor-specific flags
3048 if enabled aarch64; then
3049
3050 case $cpu in
3051 armv*)
3052 cpuflags="-march=$cpu"
3053 ;;
3054 *)
3055 cpuflags="-mcpu=$cpu"
3056 ;;
3057 esac
3058
3059 elif enabled alpha; then
3060
3061 cpuflags="-mcpu=$cpu"
3062
3063 elif enabled arm; then
3064
3065 check_arm_arch() {
3066 check_cpp_condition stddef.h \
3067 "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3068 $cpuflags
3069 }
3070
3071 probe_arm_arch() {
3072 if check_arm_arch 4; then echo armv4;
3073 elif check_arm_arch 4T; then echo armv4t;
3074 elif check_arm_arch 5; then echo armv5;
3075 elif check_arm_arch 5E; then echo armv5e;
3076 elif check_arm_arch 5T; then echo armv5t;
3077 elif check_arm_arch 5TE; then echo armv5te;
3078 elif check_arm_arch 5TEJ; then echo armv5te;
3079 elif check_arm_arch 6; then echo armv6;
3080 elif check_arm_arch 6J; then echo armv6j;
3081 elif check_arm_arch 6K; then echo armv6k;
3082 elif check_arm_arch 6Z; then echo armv6z;
3083 elif check_arm_arch 6ZK; then echo armv6zk;
3084 elif check_arm_arch 6T2; then echo armv6t2;
3085 elif check_arm_arch 7; then echo armv7;
3086 elif check_arm_arch 7A 7_A; then echo armv7-a;
3087 elif check_arm_arch 7R 7_R; then echo armv7-r;
3088 elif check_arm_arch 7M 7_M; then echo armv7-m;
3089 elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3090 elif check_arm_arch 8A 8_A; then echo armv8-a;
3091 fi
3092 }
3093
3094 [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3095
3096 case $cpu in
3097 armv*)
3098 cpuflags="-march=$cpu"
3099 subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3100 ;;
3101 *)
3102 cpuflags="-mcpu=$cpu"
3103 case $cpu in
3104 cortex-a*) subarch=armv7a ;;
3105 cortex-r*) subarch=armv7r ;;
3106 cortex-m*) enable thumb; subarch=armv7m ;;
3107 arm11*) subarch=armv6 ;;
3108 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3109 armv4*|arm7*|arm9[24]*) subarch=armv4 ;;
3110 *) subarch=$(probe_arm_arch) ;;
3111 esac
3112 ;;
3113 esac
3114
3115 case "$subarch" in
3116 armv5t*) enable fast_clz ;;
3117 armv[6-8]*) enable fast_clz fast_unaligned ;;
3118 esac
3119
3120 elif enabled avr32; then
3121
3122 case $cpu in
3123 ap7[02]0[0-2])
3124 subarch="avr32_ap"
3125 cpuflags="-mpart=$cpu"
3126 ;;
3127 ap)
3128 subarch="avr32_ap"
3129 cpuflags="-march=$cpu"
3130 ;;
3131 uc3[ab]*)
3132 subarch="avr32_uc"
3133 cpuflags="-mcpu=$cpu"
3134 ;;
3135 uc)
3136 subarch="avr32_uc"
3137 cpuflags="-march=$cpu"
3138 ;;
3139 esac
3140
3141 elif enabled bfin; then
3142
3143 cpuflags="-mcpu=$cpu"
3144
3145 elif enabled mips; then
3146
3147 cpuflags="-march=$cpu"
3148
3149 elif enabled ppc; then
3150
3151 disable ldbrx
3152
3153 case $(tolower $cpu) in
3154 601|ppc601|powerpc601)
3155 cpuflags="-mcpu=601"
3156 disable altivec
3157 ;;
3158 603*|ppc603*|powerpc603*)
3159 cpuflags="-mcpu=603"
3160 disable altivec
3161 ;;
3162 604*|ppc604*|powerpc604*)
3163 cpuflags="-mcpu=604"
3164 disable altivec
3165 ;;
3166 g3|75*|ppc75*|powerpc75*)
3167 cpuflags="-mcpu=750"
3168 disable altivec
3169 ;;
3170 g4|745*|ppc745*|powerpc745*)
3171 cpuflags="-mcpu=7450"
3172 ;;
3173 74*|ppc74*|powerpc74*)
3174 cpuflags="-mcpu=7400"
3175 ;;
3176 g5|970|ppc970|powerpc970)
3177 cpuflags="-mcpu=970"
3178 ;;
3179 power[3-7]*)
3180 cpuflags="-mcpu=$cpu"
3181 ;;
3182 cell)
3183 cpuflags="-mcpu=cell"
3184 enable ldbrx
3185 ;;
3186 e500mc)
3187 cpuflags="-mcpu=e500mc"
3188 disable altivec
3189 ;;
3190 e500v2)
3191 cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3192 disable altivec
3193 disable dcbzl
3194 ;;
3195 e500)
3196 cpuflags="-mcpu=8540 -mhard-float"
3197 disable altivec
3198 disable dcbzl
3199 ;;
3200 esac
3201
3202 elif enabled sparc; then
3203
3204 case $cpu in
3205 cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3206 cpuflags="-mcpu=$cpu"
3207 ;;
3208 ultrasparc*|niagara[234])
3209 cpuflags="-mcpu=$cpu"
3210 ;;
3211 esac
3212
3213 elif enabled x86; then
3214
3215 case $cpu in
3216 i[345]86|pentium)
3217 cpuflags="-march=$cpu"
3218 disable mmx
3219 ;;
3220 # targets that do NOT support nopl and conditional mov (cmov)
3221 pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3222 cpuflags="-march=$cpu"
3223 disable i686
3224 ;;
3225 # targets that do support nopl and conditional mov (cmov)
3226 i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3227 cpuflags="-march=$cpu"
3228 enable i686
3229 enable fast_cmov
3230 ;;
3231 # targets that do support conditional mov but on which it's slow
3232 pentium4|pentium4m|prescott|nocona)
3233 cpuflags="-march=$cpu"
3234 enable i686
3235 disable fast_cmov
3236 ;;
3237 esac
3238
3239 fi
3240
3241 if [ "$cpu" != generic ]; then
3242 add_cflags $cpuflags
3243 add_asflags $cpuflags
3244 fi
3245
3246 # compiler sanity check
3247 check_exec <<EOF
3248 int main(void){ return 0; }
3249 EOF
3250 if test "$?" != 0; then
3251 echo "$cc is unable to create an executable file."
3252 if test -z "$cross_prefix" && ! enabled cross_compile ; then
3253 echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3254 echo "Only do this if you know what cross compiling means."
3255 fi
3256 die "C compiler test failed."
3257 fi
3258
3259 add_cppflags -D_ISOC99_SOURCE
3260 check_cflags -std=c99
3261 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3262 #include <stdlib.h>
3263 EOF
3264 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3265 #include <stdlib.h>
3266 EOF
3267
3268 add_host_cppflags -D_ISOC99_SOURCE
3269 check_host_cflags -std=c99
3270 check_host_cflags -Wall
3271 check_host_cflags -O3
3272
3273 check_64bit(){
3274 arch32=$1
3275 arch64=$2
3276 expr=$3
3277 check_code cc "" "int test[2*($expr) - 1]" &&
3278 subarch=$arch64 || subarch=$arch32
3279 }
3280
3281 case "$arch" in
3282 aarch64|alpha|ia64)
3283 spic=$shared
3284 ;;
3285 mips)
3286 check_64bit mips mips64 '_MIPS_SIM > 1'
3287 spic=$shared
3288 ;;
3289 parisc)
3290 check_64bit parisc parisc64 'sizeof(void *) > 4'
3291 spic=$shared
3292 ;;
3293 ppc)
3294 check_64bit ppc ppc64 'sizeof(void *) > 4'
3295 spic=$shared
3296 ;;
3297 s390)
3298 check_64bit s390 s390x 'sizeof(void *) > 4'
3299 spic=$shared
3300 ;;
3301 sparc)
3302 check_64bit sparc sparc64 'sizeof(void *) > 4'
3303 spic=$shared
3304 ;;
3305 x86)
3306 check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3307 if test "$subarch" = "x86_64"; then
3308 spic=$shared
3309 fi
3310 ;;
3311 esac
3312
3313 enable $subarch
3314 enabled spic && enable_weak pic
3315
3316 # OS specific
3317 case $target_os in
3318 aix)
3319 SHFLAGS=-shared
3320 add_cppflags '-I\$(SRC_PATH)/compat/aix'
3321 enabled shared && add_ldflags -Wl,-brtl
3322 ;;
3323 haiku)
3324 prefix_default="/boot/common"
3325 network_extralibs="-lnetwork"
3326 host_libs=
3327 ;;
3328 sunos)
3329 SHFLAGS='-shared -Wl,-h,$$(@F)'
3330 enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3331 network_extralibs="-lsocket -lnsl"
3332 # When using suncc to build, the Solaris linker will mark
3333 # an executable with each instruction set encountered by
3334 # the Solaris assembler. As our libraries contain their own
3335 # guards for processor-specific code, instead suppress
3336 # generation of the HWCAPS ELF section on Solaris x86 only.
3337 enabled_all suncc x86 &&
3338 echo "hwcap_1 = OVERRIDE;" > mapfile &&
3339 add_ldflags -Wl,-M,mapfile
3340 nm_default='nm -P -g'
3341 ;;
3342 netbsd)
3343 disable symver
3344 oss_indev_extralibs="-lossaudio"
3345 oss_outdev_extralibs="-lossaudio"
3346 ;;
3347 openbsd|bitrig)
3348 disable symver
3349 SHFLAGS='-shared'
3350 SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3351 SLIB_INSTALL_LINKS=
3352 oss_indev_extralibs="-lossaudio"
3353 oss_outdev_extralibs="-lossaudio"
3354 ;;
3355 dragonfly)
3356 disable symver
3357 ;;
3358 freebsd)
3359 ;;
3360 bsd/os)
3361 add_extralibs -lpoll -lgnugetopt
3362 ;;
3363 darwin)
3364 gas="gas-preprocessor.pl $cc"
3365 enabled ppc && add_asflags -force_cpusubtype_ALL
3366 SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3367 enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3368 add_ldflags -Wl,-dynamic,-search_paths_first
3369 SLIBSUF=".dylib"
3370 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3371 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3372 objformat="macho"
3373 enabled x86_64 && objformat="macho64"
3374 enabled_any pic shared ||
3375 { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3376 ;;
3377 mingw32*)
3378 if test $target_os = "mingw32ce"; then
3379 disable network
3380 else
3381 target_os=mingw32
3382 fi
3383 LIBTARGET=i386
3384 if enabled x86_64; then
3385 LIBTARGET="i386:x86-64"
3386 elif enabled arm; then
3387 LIBTARGET=arm-wince
3388 fi
3389 check_ldflags -Wl,--nxcompat
3390 check_ldflags -Wl,--dynamicbase
3391 shlibdir_default="$bindir_default"
3392 SLIBPREF=""
3393 SLIBSUF=".dll"
3394 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3395 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3396 SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3397 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3398 SLIB_INSTALL_LINKS=
3399 SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3400 SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3401 SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3402 objformat="win32"
3403 dlltool="${cross_prefix}dlltool"
3404 ranlib=:
3405 enable dos_paths
3406 ;;
3407 win32|win64)
3408 disable symver
3409 if enabled shared; then
3410 # Link to the import library instead of the normal static library
3411 # for shared libs.
3412 LD_LIB='%.lib'
3413 # Cannot build both shared and static libs with MSVC or icl.
3414 disable static
3415 fi
3416 shlibdir_default="$bindir_default"
3417 SLIBPREF=""
3418 SLIBSUF=".dll"
3419 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3420 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3421 SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3422 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3423 SLIB_INSTALL_LINKS=
3424 SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3425 SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3426 SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3427 objformat="win32"
3428 ranlib=:
3429 enable dos_paths
3430 ;;
3431 cygwin*)
3432 target_os=cygwin
3433 shlibdir_default="$bindir_default"
3434 SLIBPREF="cyg"
3435 SLIBSUF=".dll"
3436 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3437 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3438 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3439 SLIB_INSTALL_LINKS=
3440 SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3441 SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3442 objformat="win32"
3443 enable dos_paths
3444 ;;
3445 *-dos|freedos|opendos)
3446 network_extralibs="-lsocket"
3447 objformat="coff"
3448 enable dos_paths
3449 add_cppflags -U__STRICT_ANSI__
3450 ;;
3451 linux)
3452 enable dv1394
3453 ;;
3454 irix*)
3455 target_os=irix
3456 ranlib="echo ignoring ranlib"
3457 ;;
3458 os/2*)
3459 ln_s="cp -f"
3460 objformat="aout"
3461 add_cppflags -D_GNU_SOURCE
3462 add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3463 SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3464 LIBSUF="_s.a"
3465 SLIBPREF=""
3466 SLIBSUF=".dll"
3467 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3468 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3469 SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3470 echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3471 echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3472 echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3473 echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3474 emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3475 SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3476 emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3477 SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3478 enable dos_paths
3479 ;;
3480 gnu/kfreebsd)
3481 add_cppflags -D_BSD_SOURCE
3482 ;;
3483 gnu)
3484 ;;
3485 qnx)
3486 add_cppflags -D_QNX_SOURCE
3487 network_extralibs="-lsocket"
3488 ;;
3489 symbian)
3490 SLIBSUF=".dll"
3491 enable dos_paths
3492 add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3493 add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3494 add_ldflags -Wl,--target1-abs,--no-undefined \
3495 -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3496 -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3497 add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3498 -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3499 -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3500 ;;
3501 osf1)
3502 add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3503 ;;
3504 minix)
3505 ;;
3506 plan9)
3507 add_cppflags -D_C99_SNPRINTF_EXTENSION \
3508 -D_REENTRANT_SOURCE \
3509 -D_RESEARCH_SOURCE \
3510 -DFD_SETSIZE=96 \
3511 -DHAVE_SOCK_OPTS
3512 add_compat strtod.o strtod=avpriv_strtod
3513 network_extralibs='-lbsd'
3514 exeobjs=compat/plan9/main.o
3515 disable avserver
3516 cp_f='cp'
3517 ;;
3518 none)
3519 ;;
3520 *)
3521 die "Unknown OS '$target_os'."
3522 ;;
3523 esac
3524
3525 # determine libc flavour
3526
3527 probe_libc(){
3528 pfx=$1
3529 pfx_no_=${pfx%_}
3530 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3531 if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3532 eval ${pfx}libc_type=uclibc
3533 add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3534 elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3535 eval ${pfx}libc_type=glibc
3536 add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3537 # MinGW headers can be installed on Cygwin, so check for newlib first.
3538 elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3539 eval ${pfx}libc_type=newlib
3540 add_${pfx}cppflags -U__STRICT_ANSI__
3541 # MinGW64 is backwards compatible with MinGW32, so check for it first.
3542 elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3543 eval ${pfx}libc_type=mingw64
3544 add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3545 eval test \$${pfx_no_}cc_type = "gcc" &&
3546 add_${pfx}cppflags -D__printf__=__gnu_printf__
3547 elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION" ||
3548 check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3549 eval ${pfx}libc_type=mingw32
3550 check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3551 (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3552 die "ERROR: MinGW32 runtime version must be >= 3.15."
3553 add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3554 eval test \$${pfx_no_}cc_type = "gcc" &&
3555 add_${pfx}cppflags -D__printf__=__gnu_printf__
3556 elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3557 eval ${pfx}libc_type=msvcrt
3558 # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3559 # 0x601 by default unless something else is set by the user.
3560 # This can easily lead to us detecting functions only present
3561 # in such new versions and producing binaries requiring windows 7.0.
3562 # Therefore explicitly set the default to XP unless the user has
3563 # set something else on the command line.
3564 check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3565 add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3566 elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3567 eval ${pfx}libc_type=klibc
3568 elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3569 eval ${pfx}libc_type=bionic
3570 elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3571 eval ${pfx}libc_type=solaris
3572 add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3573 fi
3574 }
3575
3576 probe_libc
3577 test -n "$libc_type" && enable libc_$libc_type
3578 probe_libc host_
3579 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3580
3581 case $libc_type in
3582 bionic)
3583 add_compat strtod.o strtod=avpriv_strtod
3584 ;;
3585 msvcrt)
3586 add_compat strtod.o strtod=avpriv_strtod
3587 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf \
3588 _snprintf=avpriv_snprintf \
3589 vsnprintf=avpriv_vsnprintf
3590 ;;
3591 esac
3592
3593 # hacks for compiler/libc/os combinations
3594
3595 if enabled_all tms470 libc_glibc; then
3596 CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3597 add_cppflags -D__USER_LABEL_PREFIX__=
3598 add_cppflags -D__builtin_memset=memset
3599 add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3600 add_cflags -pds=48 # incompatible redefinition of macro
3601 fi
3602
3603 if enabled_all ccc libc_glibc; then
3604 add_ldflags -Wl,-z,now # calls to libots crash without this
3605 fi
3606
3607 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3608 add_cppflags '-I\$(SRC_PATH)/compat/float'
3609
3610 esc(){
3611 echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3612 }
3613
3614 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3615
3616 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3617
3618 set_default $PATHS_LIST
3619 set_default nm
3620
3621 # we need to build at least one lib type
3622 if ! enabled_any static shared; then
3623 cat <<EOF
3624 At least one library type must be built.
3625 Specify --enable-static to build the static libraries or --enable-shared to
3626 build the shared libraries as well. To only build the shared libraries specify
3627 --disable-static in addition to --enable-shared.
3628 EOF
3629 exit 1;
3630 fi
3631
3632 die_license_disabled() {
3633 enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3634 }
3635
3636 die_license_disabled gpl libcdio
3637 die_license_disabled gpl libx264
3638 die_license_disabled gpl libx265
3639 die_license_disabled gpl libxavs
3640 die_license_disabled gpl libxvid
3641 die_license_disabled gpl x11grab
3642
3643 die_license_disabled nonfree libfaac
3644 die_license_disabled nonfree libfdk_aac
3645 die_license_disabled nonfree openssl
3646
3647 die_license_disabled version3 libopencore_amrnb
3648 die_license_disabled version3 libopencore_amrwb
3649 die_license_disabled version3 libvo_aacenc
3650 die_license_disabled version3 libvo_amrwbenc
3651
3652 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3653
3654 disabled optimizations || check_cflags -fomit-frame-pointer
3655
3656 enable_weak_pic() {
3657 disabled pic && return
3658 enable pic
3659 add_cppflags -DPIC
3660 case "$target_os" in
3661 mingw*|cygwin*)
3662 ;;
3663 *)
3664 add_cflags -fPIC
3665 ;;
3666 esac
3667 add_asflags -fPIC
3668 }
3669
3670 enabled pic && enable_weak_pic
3671
3672 check_cc <<EOF || die "Symbol mangling check failed."
3673 int ff_extern;
3674 EOF
3675 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3676 extern_prefix=${sym%%ff_extern*}
3677
3678 check_cc <<EOF && enable_weak inline_asm
3679 void foo(void) { __asm__ volatile ("" ::); }
3680 EOF
3681
3682 _restrict=
3683 for restrict_keyword in restrict __restrict__ __restrict; do
3684 check_cc <<EOF && _restrict=$restrict_keyword && break
3685 void foo(char * $restrict_keyword p);
3686 EOF
3687 done
3688
3689 check_cc <<EOF && enable pragma_deprecated
3690 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3691 EOF
3692
3693 check_cc <<EOF && enable attribute_packed
3694 struct { int x; } __attribute__((packed)) x;
3695 EOF
3696
3697 check_cc <<EOF && enable attribute_may_alias
3698 union { int x; } __attribute__((may_alias)) x;
3699 EOF
3700
3701 check_cc <<EOF || die "endian test failed"
3702 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3703 EOF
3704 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3705
3706 check_inline_asm inline_asm_labels '"1:\n"'
3707
3708 if enabled aarch64; then
3709 enabled armv8 && check_insn armv8 'prfm pldl1strm, [x0]'
3710 # internal assembler in clang 3.3 does not support this instruction
3711 enabled neon && check_insn neon 'ext v0.8B, v0.8B, v1.8B, #1'
3712 enabled vfp && check_insn vfp 'fmadd d0, d0, d1, d2'
3713
3714 map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3715
3716 elif enabled alpha; then
3717
3718 check_cflags -mieee
3719
3720 elif enabled arm; then
3721
3722 check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3723 enabled thumb && check_cflags -mthumb || check_cflags -marm
3724 nogas=die
3725
3726 if check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3727 enable vfp_args
3728 elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3729 case "${cross_prefix:-$cc}" in
3730 *hardfloat*) enable vfp_args; fpabi=vfp ;;
3731 *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3732 __asm__ (".eabi_attribute 28, 1");
3733 int main(void) { return 0; }
3734 EOF
3735 esac
3736 warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3737 fi
3738
3739 enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3740 enabled armv6 && check_insn armv6 'sadd16 r0, r0, r0'
3741 enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3742 enabled neon && check_insn neon 'vadd.i16 q0, q0, q0'
3743 enabled vfp && check_insn vfp 'fadds s0, s0, s0'
3744 enabled vfpv3 && check_insn vfpv3 'vmov.f32 s0, #1.0'
3745
3746 [ $target_os = linux ] ||
3747 map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3748 $ARCH_EXT_LIST_ARM
3749
3750 check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3751
3752 [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3753
3754 elif enabled mips; then
3755
3756 check_inline_asm loongson '"dmult.g $1, $2, $3"'
3757
3758 elif enabled parisc; then
3759
3760 if enabled gcc; then
3761 case $($cc -dumpversion) in
3762 4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3763 esac
3764 fi
3765
3766 elif enabled ppc; then
3767
3768 enable local_aligned_8 local_aligned_16
3769
3770 check_inline_asm dcbzl '"dcbzl 0, %0" :: "r"(0)'
3771 check_inline_asm ibm_asm '"add 0, 0, 0"'
3772 check_inline_asm ppc4xx '"maclhw r10, r11, r12"'
3773 check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3774
3775 # AltiVec flags: The FSF version of GCC differs from the Apple version
3776 if enabled altivec; then
3777 nogas=warn
3778 check_cflags -maltivec -mabi=altivec &&
3779 { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3780 check_cflags -faltivec
3781
3782 # check if our compiler supports Motorola AltiVec C API
3783 check_cc <<EOF || disable altivec
3784 $inc_altivec_h
3785 int main(void) {
3786 vector signed int v1 = (vector signed int) { 0 };
3787 vector signed int v2 = (vector signed int) { 1 };
3788 v1 = vec_add(v1, v2);
3789 return 0;
3790 }
3791 EOF
3792
3793 enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3794 fi
3795
3796 elif enabled x86; then
3797
3798 check_builtin rdtsc intrin.h "__rdtsc()"
3799 check_builtin mm_empty mmintrin.h "_mm_empty()"
3800
3801 enable local_aligned_8 local_aligned_16
3802
3803 # check whether EBP is available on x86
3804 # As 'i' is stored on the stack, this program will crash
3805 # if the base pointer is used to access it because the
3806 # base pointer is cleared in the inline assembly code.
3807 check_exec_crash <<EOF && enable ebp_available
3808 volatile int i=0;
3809 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3810 return i;
3811 EOF
3812
3813 # check whether EBX is available on x86
3814 check_inline_asm ebx_available '""::"b"(0)' &&
3815 check_inline_asm ebx_available '"":::"%ebx"'
3816
3817 # check whether xmm clobbers are supported
3818 check_inline_asm xmm_clobbers '"":::"%xmm0"'
3819
3820 # check whether binutils is new enough to compile SSSE3/MMXEXT
3821 enabled ssse3 && check_inline_asm ssse3_inline '"pabsw %xmm0, %xmm0"'
3822 enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3823
3824 if ! disabled_any asm mmx yasm; then
3825 if check_cmd $yasmexe --version; then
3826 enabled x86_64 && yasm_extra="-m amd64"
3827 yasm_debug="-g dwarf2"
3828 elif check_cmd nasm -v; then
3829 yasmexe=nasm
3830 yasm_debug="-g -F dwarf"
3831 enabled x86_64 && test "$objformat" = elf && objformat=elf64
3832 fi
3833
3834 YASMFLAGS="-f $objformat $yasm_extra"
3835 enabled pic && append YASMFLAGS "-DPIC"
3836 test -n "$extern_prefix" && append YASMFLAGS "-DPREFIX"
3837 case "$objformat" in
3838 elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3839 esac
3840
3841 check_yasm "movbe ecx, [5]" && enable yasm ||
3842 die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3843 check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3844 check_yasm "vfmadd132ps ymm0, ymm1, ymm2" || disable fma3_external
3845 check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3846 check_yasm "CPU amdnop" || disable cpunop
3847 fi
3848
3849 case "$cpu" in
3850 athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3851 disable fast_clz
3852 ;;
3853 esac
3854
3855 fi
3856
3857 if enabled asm; then
3858 as=${gas:=$as}
3859 check_as <<EOF && enable gnu_as || \
3860 $nogas "GNU assembler not found, install gas-preprocessor"
3861 .macro m n
3862 \n: .int 0
3863 .endm
3864 m x
3865 EOF
3866 fi
3867
3868 check_ldflags -Wl,--as-needed
3869
3870 if check_func dlopen; then
3871 ldl=
3872 elif check_func dlopen -ldl; then
3873 ldl=-ldl
3874 fi
3875
3876 if ! disabled network; then
3877 check_func getaddrinfo $network_extralibs
3878 check_func getservbyport $network_extralibs
3879 check_func inet_aton $network_extralibs
3880
3881 check_type netdb.h "struct addrinfo"
3882 check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3883 check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3884 check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3885 check_type poll.h "struct pollfd"
3886 check_type netinet/sctp.h "struct sctp_event_subscribe"
3887 check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3888 check_type netinet/in.h "struct sockaddr_in6"
3889 check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3890 check_type "sys/types.h sys/socket.h" socklen_t
3891
3892 # Prefer arpa/inet.h over winsock2
3893 if check_header arpa/inet.h ; then
3894 check_func closesocket
3895 elif check_header winsock2.h ; then
3896 check_func_headers winsock2.h closesocket -lws2 &&
3897 network_extralibs="-lws2" ||
3898 { check_func_headers winsock2.h closesocket -lws2_32 &&
3899 network_extralibs="-lws2_32"; } || disable winsock2_h network
3900 check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3901
3902 check_type ws2tcpip.h socklen_t
3903 check_type ws2tcpip.h "struct addrinfo"
3904 check_type ws2tcpip.h "struct group_source_req"
3905 check_type ws2tcpip.h "struct ip_mreq_source"
3906 check_type ws2tcpip.h "struct ipv6_mreq"
3907 check_type winsock2.h "struct pollfd"
3908 check_struct winsock2.h "struct sockaddr" sa_len
3909 check_type ws2tcpip.h "struct sockaddr_in6"
3910 check_type ws2tcpip.h "struct sockaddr_storage"
3911 else
3912 disable network
3913 fi
3914 fi
3915
3916 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3917 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3918 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3919 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3920
3921 check_func_headers malloc.h _aligned_malloc && enable aligned_malloc
3922 check_func ${malloc_prefix}memalign && enable memalign
3923 check_func ${malloc_prefix}posix_memalign && enable posix_memalign
3924
3925 check_func fcntl
3926 check_func fork
3927 check_func gethrtime
3928 check_func getopt
3929 check_func getrusage
3930 check_func gettimeofday
3931 check_func isatty
3932 check_func localtime_r
3933 check_func mach_absolute_time
3934 check_func mkstemp
3935 check_func mmap
3936 check_func mprotect
3937 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3938 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3939 check_func sched_getaffinity
3940 check_func setrlimit
3941 check_func strerror_r
3942 check_func strptime
3943 check_func sysconf
3944 check_func sysctl
3945 check_func usleep
3946
3947 check_func_headers io.h setmode
3948 check_func_headers stdlib.h getenv
3949
3950 check_func_headers windows.h CoTaskMemFree -lole32
3951 check_func_headers windows.h GetProcessAffinityMask
3952 check_func_headers windows.h GetProcessTimes
3953 check_func_headers windows.h GetSystemTimeAsFileTime
3954 check_func_headers windows.h MapViewOfFile
3955 check_func_headers windows.h SetConsoleTextAttribute
3956 check_func_headers windows.h Sleep
3957 check_func_headers windows.h VirtualAlloc
3958
3959 check_header direct.h
3960 check_header dlfcn.h
3961 check_header dxva.h
3962 check_header dxva2api.h
3963 check_header io.h
3964 check_header mach/mach_time.h
3965 check_header malloc.h
3966 check_header poll.h
3967 check_header sys/mman.h
3968 check_header sys/param.h
3969 check_header sys/resource.h
3970 check_header sys/select.h
3971 check_header sys/time.h
3972 check_header sys/un.h
3973 check_header unistd.h
3974 check_header vdpau/vdpau.h
3975 check_header vdpau/vdpau_x11.h
3976 check_header VideoDecodeAcceleration/VDADecoder.h
3977 check_header windows.h
3978 check_header X11/extensions/XvMClib.h
3979
3980 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3981 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3982 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3983
3984 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3985
3986 if ! disabled w32threads && ! enabled pthreads; then
3987 check_func_headers "windows.h process.h" _beginthreadex &&
3988 enable w32threads || disable w32threads
3989 fi
3990
3991 # check for some common methods of building with pthread support
3992 # do this before the optional library checks as some of them require pthreads
3993 if ! disabled pthreads && ! enabled w32threads; then
3994 enable pthreads
3995 if check_func pthread_join -pthread; then
3996 add_cflags -pthread
3997 add_extralibs -pthread
3998 elif check_func pthread_join -pthreads; then
3999 add_cflags -pthreads
4000 add_extralibs -pthreads
4001 elif check_func pthread_join -lpthreadGC2; then
4002 add_extralibs -lpthreadGC2
4003 elif check_lib pthread.h pthread_join -lpthread; then
4004 :
4005 elif ! check_func pthread_join; then
4006 disable pthreads
4007 fi
4008 fi
4009
4010 disabled zlib || check_lib zlib.h zlibVersion -lz || disable zlib
4011 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4012
4013 check_lib math.h sin -lm && LIBM="-lm"
4014 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4015
4016 atan2f_args=2
4017 ldexpf_args=2
4018 powf_args=2
4019
4020 for func in $MATH_FUNCS; do
4021 eval check_mathfunc $func \${${func}_args:-1}
4022 done
4023
4024 # these are off by default, so fail if requested and not available
4025 enabled avisynth && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4026 { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4027 die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4028 enabled frei0r && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4029 enabled gnutls && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4030 enabled libfaac && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4031 enabled libfdk_aac && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4032 enabled libfontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4033 enabled libfreetype && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4034 enabled libgsm && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4035 check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4036 done || die "ERROR: libgsm not found"; }
4037 enabled libilbc && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4038 enabled libmp3lame && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4039 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4040 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4041 enabled libopencv && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4042 enabled libopenjpeg && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4043 { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4044 enabled libopus && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4045 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4046 enabled librtmp && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4047 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4048 enabled libspeex && require libspeex speex/speex.h speex_decoder_init -lspeex
4049 enabled libtheora && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4050 enabled libtwolame && require libtwolame twolame.h twolame_init -ltwolame
4051 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4052 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4053 enabled libvorbis && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4054 enabled libvpx && {
4055 enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4056 die "ERROR: libvpx decoder version must be >=0.9.1"; }
4057 enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4058 die "ERROR: libvpx encoder version must be >=0.9.6"; }
4059 enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4060 enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4061 enabled libwavpack && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput -lwavpack
4062 enabled libwebp && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4063 enabled libx264 && require libx264 x264.h x264_encoder_encode -lx264 &&
4064 { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4065 die "ERROR: libx264 version must be >= 0.118."; }
4066 enabled libx265 && require_pkg_config x265 x265.h x265_encoder_encode &&
4067 { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4068 die "ERROR: libx265 version must be >= 13."; }
4069 enabled libxavs && require libxavs xavs.h xavs_encoder_encode -lxavs
4070 enabled libxvid && require libxvid xvid.h xvid_global -lxvidcore
4071 enabled openssl && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4072 check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4073 check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4074 die "ERROR: openssl not found"; }
4075
4076 if enabled gnutls; then
4077 { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4078 { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4079 fi
4080
4081 # libdc1394 check
4082 if enabled libdc1394; then
4083 { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4084 enable libdc1394_2; } ||
4085 { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4086 enable libdc1394_1; } ||
4087 die "ERROR: No version of libdc1394 found "
4088 fi
4089
4090 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4091 check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4092 check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4093 enable sdl
4094 fi
4095
4096 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
4097 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4098
4099 check_header linux/fb.h
4100 check_header linux/videodev2.h
4101 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4102
4103 check_header sys/videoio.h
4104
4105 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4106 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4107 # w32api 3.12 had it defined wrong
4108 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4109
4110 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4111 { check_header dev/bktr/ioctl_meteor.h &&
4112 check_header dev/bktr/ioctl_bt848.h; } ||
4113 { check_header machine/ioctl_meteor.h &&
4114 check_header machine/ioctl_bt848.h; } ||
4115 { check_header dev/video/meteor/ioctl_meteor.h &&
4116 check_header dev/video/bktr/ioctl_bt848.h; } ||
4117 check_header dev/ic/bt8xx.h
4118
4119 check_header sndio.h
4120 check_header sys/soundcard.h
4121 check_header soundcard.h
4122
4123 enabled_any alsa_indev alsa_outdev &&
4124 check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4125
4126 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4127 check_func jack_port_get_latency_range -ljack
4128
4129 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4130
4131 if enabled libcdio; then
4132 check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4133 check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4134 fi
4135
4136 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4137
4138 enabled x11grab &&
4139 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4140 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4141 { enabled xlib || die "ERROR: Xlib not found"; }
4142
4143 enabled vdpau &&
4144 check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4145 disable vdpau
4146
4147 enabled vdpau && enabled xlib &&
4148 check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4149 prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4150 enable vdpau_x11
4151
4152 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4153
4154 # add some useful compiler flags if supported
4155 check_cflags -Wdeclaration-after-statement
4156 check_cflags -Wall
4157 check_cflags -Wdisabled-optimization
4158 check_cflags -Wpointer-arith
4159 check_cflags -Wredundant-decls
4160 check_cflags -Wcast-qual
4161 check_cflags -Wwrite-strings
4162 check_cflags -Wtype-limits
4163 check_cflags -Wundef
4164 check_cflags -Wmissing-prototypes
4165 check_cflags -Wstrict-prototypes
4166 enabled extra_warnings && check_cflags -Winline
4167
4168 check_disable_warning(){
4169 warning_flag=-W${1#-Wno-}
4170 test_cflags $warning_flag && add_cflags $1
4171 }
4172
4173 check_disable_warning -Wno-parentheses
4174 check_disable_warning -Wno-switch
4175 check_disable_warning -Wno-format-zero-length
4176 check_disable_warning -Wno-pointer-sign
4177
4178 # add some linker flags
4179 check_ldflags -Wl,--warn-common
4180 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4181 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4182
4183 # add some strip flags
4184 # -wN '..@*' is more selective than -x, but not available everywhere.
4185 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4186
4187 enabled neon_clobber_test &&
4188 check_ldflags -Wl,--wrap,avcodec_open2 \
4189 -Wl,--wrap,avcodec_decode_audio4 \
4190 -Wl,--wrap,avcodec_decode_video2 \
4191 -Wl,--wrap,avcodec_decode_subtitle2 \
4192 -Wl,--wrap,avcodec_encode_audio2 \
4193 -Wl,--wrap,avcodec_encode_video2 \
4194 -Wl,--wrap,avcodec_encode_subtitle \
4195 -Wl,--wrap,avresample_convert ||
4196 disable neon_clobber_test
4197
4198 enabled xmm_clobber_test &&
4199 check_ldflags -Wl,--wrap,avcodec_open2 \
4200 -Wl,--wrap,avcodec_decode_audio4 \
4201 -Wl,--wrap,avcodec_decode_video2 \
4202 -Wl,--wrap,avcodec_decode_subtitle2 \
4203 -Wl,--wrap,avcodec_encode_audio2 \
4204 -Wl,--wrap,avcodec_encode_video2 \
4205 -Wl,--wrap,avcodec_encode_subtitle \
4206 -Wl,--wrap,avresample_convert \
4207 -Wl,--wrap,sws_scale ||
4208 disable xmm_clobber_test
4209
4210 echo "X{};" > $TMPV
4211 if test_ldflags -Wl,--version-script,$TMPV; then
4212 append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4213 check_cc <<EOF && enable symver_asm_label
4214 void ff_foo(void) __asm__ ("av_foo@VERSION");
4215 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4216 EOF
4217 check_cc <<EOF && enable symver_gnu_asm
4218 __asm__(".symver ff_foo,av_foo@VERSION");
4219 void ff_foo(void) {}
4220 EOF
4221 fi
4222
4223 if [ -z "$optflags" ]; then
4224 if enabled small; then
4225 optflags=$cflags_size
4226 elif enabled optimizations; then
4227 optflags=$cflags_speed
4228 else
4229 optflags=$cflags_noopt
4230 fi
4231 fi
4232
4233 check_optflags(){
4234 check_cflags "$@"
4235 enabled lto && check_ldflags "$@"
4236 }
4237
4238
4239 if enabled lto; then
4240 test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4241 check_cflags -flto
4242 check_ldflags -flto $cpuflags
4243 fi
4244
4245 check_optflags $optflags
4246 check_optflags -fno-math-errno
4247 check_optflags -fno-signed-zeros
4248
4249 if enabled icc; then
4250 # Just warnings, no remarks
4251 check_cflags -w1
4252 # -wd: Disable following warnings
4253 # 144, 167, 556: -Wno-pointer-sign
4254 # 1292: attribute "foo" ignored
4255 # 1419: external declaration in primary source file
4256 # 10006: ignoring unknown option -fno-signed-zeros
4257 # 10148: ignoring unknown option -Wno-parentheses
4258 # 10156: ignoring option '-W'; no argument required
4259 check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4260 # 11030: Warning unknown option --as-needed
4261 # 10156: ignoring option '-export'; no argument required
4262 check_ldflags -wd10156,11030
4263 # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4264 enable ebp_available
4265 if enabled x86_32; then
4266 icc_version=$($cc -dumpversion)
4267 test ${icc_version%%.*} -ge 11 &&
4268 check_cflags -falign-stack=maintain-16-byte ||
4269 disable aligned_stack
4270 fi
4271 elif enabled ccc; then
4272 # disable some annoying warnings
4273 add_cflags -msg_disable bitnotint
4274 add_cflags -msg_disable mixfuncvoid
4275 add_cflags -msg_disable nonstandcast
4276 add_cflags -msg_disable unsupieee
4277 elif enabled gcc; then
4278 check_optflags -fno-tree-vectorize
4279 check_cflags -Werror=implicit-function-declaration
4280 check_cflags -Werror=missing-prototypes
4281 check_cflags -Werror=return-type
4282 check_cflags -Werror=declaration-after-statement
4283 check_cflags -Werror=vla
4284 enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4285 elif enabled llvm_gcc; then
4286 check_cflags -mllvm -stack-alignment=16
4287 elif enabled clang; then
4288 check_cflags -mllvm -stack-alignment=16
4289 check_cflags -Qunused-arguments
4290 check_cflags -Werror=implicit-function-declaration
4291 check_cflags -Werror=missing-prototypes
4292 check_cflags -Werror=return-type
4293 elif enabled cparser; then
4294 add_cflags -Wno-missing-variable-declarations
4295 add_cflags -Wno-empty-statement
4296 elif enabled armcc; then
4297 add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4298 add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4299 # 2523: use of inline assembler is deprecated
4300 add_cflags -W${armcc_opt},--diag_suppress=2523
4301 add_cflags -W${armcc_opt},--diag_suppress=1207
4302 add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4303 add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4304 add_cflags -W${armcc_opt},--diag_suppress=167 # pointer sign
4305 add_cflags -W${armcc_opt},--diag_suppress=513 # pointer sign
4306 elif enabled tms470; then
4307 add_cflags -pds=824 -pds=837
4308 disable inline_asm
4309 elif enabled pathscale; then
4310 add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4311 elif enabled_any msvc icl; then
4312 enabled x86_32 && disable aligned_stack
4313 enabled_all x86_32 debug && add_cflags -Oy-
4314 enabled debug && add_ldflags -debug
4315 enable pragma_deprecated
4316 if enabled icl; then
4317 # -Qansi-alias is basically -fstrict-aliasing, but does not work
4318 # (correctly) on icl 13.x.
4319 check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4320 add_cflags -Qansi-alias
4321 # icl will pass the inline asm tests but inline asm is currently
4322 # not supported (build will fail)
4323 disable inline_asm
4324 fi
4325 fi
4326
4327 case $as_type in
4328 clang)
4329 add_asflags -Qunused-arguments
4330 ;;
4331 esac
4332
4333 case $ld_type in
4334 clang)
4335 check_ldflags -Qunused-arguments
4336 ;;
4337 esac
4338
4339 case $target_os in
4340 osf1)
4341 enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4342 ;;
4343 plan9)
4344 add_cppflags -Dmain=plan9_main
4345 ;;
4346 esac
4347
4348 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4349
4350 check_deps $CONFIG_LIST \
4351 $CONFIG_EXTRA \
4352 $HAVE_LIST \
4353 $ALL_COMPONENTS \
4354
4355 enabled_all dxva2 CoTaskMemFree &&
4356 prepend avconv_libs $($ldflags_filter "-lole32") &&
4357 enable dxva2_lib
4358
4359 ! enabled_any memalign posix_memalign aligned_malloc &&
4360 enabled_any $need_memalign && enable memalign_hack
4361
4362 for thread in $THREADS_LIST; do
4363 if enabled $thread; then
4364 test -n "$thread_type" &&
4365 die "ERROR: Only one thread type must be selected." ||
4366 thread_type="$thread"
4367 fi
4368 done
4369
4370 echo "install prefix $prefix"
4371 echo "source path $source_path"
4372 echo "C compiler $cc"
4373 echo "C library $libc_type"
4374 if test "$host_cc" != "$cc"; then
4375 echo "host C compiler $host_cc"