configure: Drop bogus xcb_event variables
[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:$PATH
58
59 show_help(){
60 cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65 --help print this message
66 --quiet Suppress showing informative output
67 --list-decoders show all available decoders
68 --list-encoders show all available encoders
69 --list-hwaccels show all available hardware accelerators
70 --list-demuxers show all available demuxers
71 --list-muxers show all available muxers
72 --list-parsers show all available parsers
73 --list-protocols show all available protocols
74 --list-bsfs show all available bitstream filters
75 --list-indevs show all available input devices
76 --list-outdevs show all available output devices
77 --list-filters show all available filters
78
79 Standard options:
80 --logfile=FILE log tests and output to FILE [config.log]
81 --disable-logging do not log configure debug information
82 --prefix=PREFIX install in PREFIX [$prefix_default]
83 --bindir=DIR install binaries in DIR [PREFIX/bin]
84 --datadir=DIR install data files in DIR [PREFIX/share/avconv]
85 --docdir=DIR install documentation in DIR [PREFIX/share/doc/libav]
86 --libdir=DIR install libs in DIR [PREFIX/lib]
87 --shlibdir=DIR install shared libs in DIR [PREFIX/lib]
88 --incdir=DIR install includes in DIR [PREFIX/include]
89 --mandir=DIR install man page in DIR [PREFIX/share/man]
90 --enable-rpath use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93 --enable-gpl allow use of GPL code, the resulting libs
94 and binaries will be under GPL [no]
95 --enable-version3 upgrade (L)GPL to version 3 [no]
96 --enable-nonfree allow use of nonfree code, the resulting libs
97 and binaries will be unredistributable [no]
98
99 Configuration options:
100 --disable-static do not build static libraries [no]
101 --enable-shared build shared libraries [no]
102 --enable-small optimize for size instead of speed
103 --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104 --enable-gray enable full grayscale support (slower color)
105 --disable-swscale-alpha disable alpha channel support in swscale
106 --disable-all disable building components, libraries and programs
107
108 Program options:
109 --disable-programs do not build command line programs
110 --disable-avconv disable avconv build
111 --disable-avplay disable avplay build
112 --disable-avprobe disable avprobe build
113 --disable-avserver deprecated, does nothing
114
115 Component options:
116 --disable-doc do not build documentation
117 --disable-pod2man do not build manual pages
118 --disable-texi2html do not build HTML documentation
119 --disable-avdevice disable libavdevice build
120 --disable-avcodec disable libavcodec build
121 --disable-avformat disable libavformat build
122 --disable-avutil disable libavutil build
123 --disable-swscale disable libswscale build
124 --disable-avfilter disable video filter support [no]
125 --disable-avresample disable libavresample build [no]
126 --disable-pthreads disable pthreads [auto]
127 --disable-w32threads disable Win32 threads [auto]
128 --disable-network disable network support [no]
129 --disable-dct disable DCT code
130 --disable-error-resilience disable error resilience code
131 --disable-lsp disable LSP code
132 --disable-lzo disable LZO decoder code
133 --disable-mdct disable MDCT code
134 --disable-rdft disable RDFT code
135 --disable-fft disable FFT code
136 --disable-faan disable floating point AAN (I)DCT code
137
138 Individual component options:
139 --disable-everything disable all components listed below
140 --disable-encoder=NAME disable encoder NAME
141 --enable-encoder=NAME enable encoder NAME
142 --disable-encoders disable all encoders
143 --disable-decoder=NAME disable decoder NAME
144 --enable-decoder=NAME enable decoder NAME
145 --disable-decoders disable all decoders
146 --disable-hwaccel=NAME disable hwaccel NAME
147 --enable-hwaccel=NAME enable hwaccel NAME
148 --disable-hwaccels disable all hwaccels
149 --disable-muxer=NAME disable muxer NAME
150 --enable-muxer=NAME enable muxer NAME
151 --disable-muxers disable all muxers
152 --disable-demuxer=NAME disable demuxer NAME
153 --enable-demuxer=NAME enable demuxer NAME
154 --disable-demuxers disable all demuxers
155 --enable-parser=NAME enable parser NAME
156 --disable-parser=NAME disable parser NAME
157 --disable-parsers disable all parsers
158 --enable-bsf=NAME enable bitstream filter NAME
159 --disable-bsf=NAME disable bitstream filter NAME
160 --disable-bsfs disable all bitstream filters
161 --enable-protocol=NAME enable protocol NAME
162 --disable-protocol=NAME disable protocol NAME
163 --disable-protocols disable all protocols
164 --enable-indev=NAME enable input device NAME
165 --disable-indev=NAME disable input device NAME
166 --disable-indevs disable input devices
167 --enable-outdev=NAME enable output device NAME
168 --disable-outdev=NAME disable output device NAME
169 --disable-outdevs disable output devices
170 --disable-devices disable all devices
171 --enable-filter=NAME enable filter NAME
172 --disable-filter=NAME disable filter NAME
173 --disable-filters disable all filters
174
175 External library support:
176
177 Using any of the following switches will allow Libav to link to the
178 corresponding external library. All the components depending on that library
179 will become enabled, if all their other dependencies are met and they are not
180 explicitly disabled. E.g. --enable-libwavpack will enable linking to
181 libwavpack and allow the libwavpack encoder to be built, unless it is
182 specifically disabled with --disable-encoder=libwavpack.
183
184 Note that only the system libraries are auto-detected. All the other external
185 libraries must be explicitly enabled.
186
187 Also note that the following help text describes the purpose of the libraries
188 themselves, not all their features will necessarily be usable by Libav.
189
190 --enable-avisynth video frameserver
191 --enable-bzlib bzip2 compression [autodetect]
192 --enable-frei0r video filtering plugins
193 --enable-gnutls crypto
194 --enable-libbs2b Bauer stereophonic-to-binaural DSP
195 --enable-libcdio audio CD input
196 --enable-libdc1394 IEEE 1394/Firewire camera input
197 --enable-libdcadec DCA audio decoding
198 --enable-libfaac AAC audio encoding
199 --enable-libfdk-aac AAC audio encoding/decoding
200 --enable-libfontconfig font configuration and management
201 --enable-libfreetype font rendering
202 --enable-libgsm GSM audio encoding/decoding
203 --enable-libhdcd HDCD decoding filter
204 --enable-libilbc ILBC audio encoding/decoding
205 --enable-libkvazaar HEVC video encoding
206 --enable-libmp3lame MP3 audio encoding
207 --enable-libopencore-amrnb AMR-NB audio encoding/decoding
208 --enable-libopencore-amrwb AMR-WB audio decoding
209 --enable-libopencv computer vision
210 --enable-libopenh264 H.264 video encoding/decoding
211 --enable-libopenjpeg JPEG 2000 image encoding/decoding
212 --enable-libopus Opus audio encoding/decoding
213 --enable-libpulse Pulseaudio sound server
214 --enable-librtmp RTMP streaming
215 --enable-libschroedinger Dirac video encoding/decoding
216 --enable-libsnappy snappy compression
217 --enable-libspeex Speex audio encoding/decoding
218 --enable-libtheora Theora video encoding/decoding
219 --enable-libtwolame MP2 audio encoding
220 --enable-libvo-aacenc AAC audio encoding
221 --enable-libvo-amrwbenc AMR-WB audio encoding
222 --enable-libvorbis Vorbis audio encoding/decoding
223 --enable-libvpx VP* video encoding/decoding
224 --enable-libwavpack Wavpack audio encoding/decoding
225 --enable-libwebp WebP image encoding/decoding
226 --enable-libx264 H.264 video encoding
227 --enable-libx265 HEVC video encoding
228 --enable-libxavs Chinese AVS video encoding
229 --enable-libxcb X window system protocol communication
230 --enable-libxcb-shm X11 shm communication [auto]
231 --enable-libxcb-xfixes X11 mouse rendering [auto]
232 --enable-libxvid MPEG-4 ASP video encoding
233 --enable-openssl crypto
234 --enable-zlib compression [autodetect]
235
236 The following libraries provide various hardware acceleration features:
237 --enable-cuda Nvidia CUDA (dynamically linked)
238 --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
239 --enable-dxva2 Microsoft DirectX 9 video acceleration [auto]
240 --enable-libmfx Intel MediaSDK (AKA Quick Sync Video)
241 --enable-libnpp Nvidia CUDA processing
242 --enable-mmal Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
243 --enable-nvenc Nvidia video encoding
244 --enable-omx OpenMAX IL
245 --enable-omx-rpi OpenMAX IL for Raspberry Pi
246 --enable-vaapi Video Acceleration API (mainly Unix/Intel)
247 --enable-vda Apple Video Decode Acceleration [auto]
248 --enable-vdpau Nvidia Video Decode and Presentation API for Unix [auto]
249
250 Toolchain options:
251 --arch=ARCH select architecture [$arch]
252 --cpu=CPU select the minimum required CPU (affects
253 instruction selection, may crash on older CPUs)
254 --cross-prefix=PREFIX use PREFIX for compilation tools [$cross_prefix]
255 --enable-cross-compile assume a cross-compiler is used
256 --sysroot=PATH root of cross-build tree
257 --sysinclude=PATH location of cross-build system headers
258 --target-os=OS compiler targets OS [$target_os]
259 --target-exec=CMD command to run executables on target
260 --target-path=DIR path to view of build directory on target
261 --target-samples=DIR path to samples directory on target
262 --toolchain=NAME set tool defaults according to NAME
263 --nm=NM use nm tool
264 --ar=AR use archive tool AR [$ar_default]
265 --as=AS use assembler AS [$as_default]
266 --cc=CC use C compiler CC [$cc_default]
267 --objcc=OCC use ObjC compiler OCC [$cc_default]
268 --dep-cc=DEPCC use dependency generator DEPCC [$cc_default]
269 --ld=LD use linker LD
270 --pkg-config=PKGCONFIG use pkg-config tool PKGCONFIG [$pkg_config_default]
271 --pkg-config-flags=FLAGS pass additional flags to pkgconf []
272 --host-cc=HOSTCC use host C compiler HOSTCC
273 --host-cflags=HCFLAGS use HCFLAGS when compiling for host
274 --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
275 --host-ld=HOSTLD use host linker HOSTLD
276 --host-ldflags=HLDFLAGS use HLDFLAGS when linking for host
277 --host-libs=HLIBS use libs HLIBS when linking for host
278 --host-os=OS compiler host OS [$target_os]
279 --extra-cflags=ECFLAGS add ECFLAGS to CFLAGS [$CFLAGS]
280 --extra-objcflags=FLAGS add FLAGS to OBJCFLAGS [$CFLAGS]
281 --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
282 --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
283 --extra-libs=ELIBS add ELIBS [$ELIBS]
284 --extra-version=STRING version string suffix []
285 --optflags=OPTFLAGS override optimization-related compiler flags
286 --build-suffix=SUFFIX library name suffix []
287 --enable-pic build position-independent code
288 --enable-thumb compile for Thumb instruction set
289 --enable-lto use link-time optimization
290 --env="ENV=override" override the environment variables
291
292 Advanced options (experts only):
293 --malloc-prefix=PREFIX prefix malloc and related names with PREFIX
294 --custom-allocator=NAME use a supported custom allocator
295 --disable-symver disable symbol versioning
296 --enable-hardcoded-tables use hardcoded tables instead of runtime generation
297 --disable-safe-bitstream-reader
298 disable buffer boundary checking in bitreaders
299 (faster, but may crash)
300 --enable-sram allow use of on-chip SRAM
301
302 Optimization options (experts only):
303 --disable-asm disable all assembly optimizations
304 --disable-altivec disable AltiVec optimizations
305 --disable-vsx disable VSX optimizations
306 --disable-power8 disable POWER8 optimizations
307 --disable-amd3dnow disable 3DNow! optimizations
308 --disable-amd3dnowext disable 3DNow! extended optimizations
309 --disable-mmx disable MMX optimizations
310 --disable-mmxext disable MMXEXT optimizations
311 --disable-sse disable SSE optimizations
312 --disable-sse2 disable SSE2 optimizations
313 --disable-sse3 disable SSE3 optimizations
314 --disable-ssse3 disable SSSE3 optimizations
315 --disable-sse4 disable SSE4 optimizations
316 --disable-sse42 disable SSE4.2 optimizations
317 --disable-avx disable AVX optimizations
318 --disable-xop disable XOP optimizations
319 --disable-fma3 disable FMA3 optimizations
320 --disable-fma4 disable FMA4 optimizations
321 --disable-avx2 disable AVX2 optimizations
322 --disable-armv5te disable armv5te optimizations
323 --disable-armv6 disable armv6 optimizations
324 --disable-armv6t2 disable armv6t2 optimizations
325 --disable-vfp disable VFP optimizations
326 --disable-neon disable NEON optimizations
327 --disable-inline-asm disable use of inline assembly
328 --disable-yasm disable use of nasm/yasm assembly
329
330 Developer options (useful when working on Libav itself):
331 --disable-debug disable debugging symbols
332 --enable-debug=LEVEL set the debug level [$debuglevel]
333 --disable-optimizations disable compiler optimizations
334 --enable-extra-warnings enable more compiler warnings
335 --samples=PATH location of test samples for FATE, if not set use
336 \$LIBAV_SAMPLES at make invocation time.
337 --enable-neon-clobber-test check NEON registers for clobbering (should be
338 used only for debugging purposes)
339 --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
340 should be used only for debugging purposes)
341 --enable-random randomly enable/disable components
342 --disable-random
343 --enable-random=LIST randomly enable/disable specific components or
344 --disable-random=LIST component groups. LIST is a comma-separated list
345 of NAME[:PROB] entries where NAME is a component
346 (group) and PROB the probability associated with
347 NAME (default 0.5).
348 --random-seed=VALUE seed value for --enable/disable-random
349 --disable-valgrind-backtrace do not print a backtrace under Valgrind
350 (only applies to --disable-optimizations builds)
351
352 NOTE: Object files are built at the place where configure is launched.
353 EOF
354 exit 0
355 }
356
357 quotes='""'
358
359 log(){
360 echo "$@" >> $logfile
361 }
362
363 log_file(){
364 log BEGIN $1
365 i=1
366 while read line; do
367 printf '%5s %s\n' "${i}" "${line}"
368 i=$(($i+1))
369 done < $1 >> $logfile
370 log END $1
371 }
372
373 echolog(){
374 log "$@"
375 echo "$@"
376 }
377
378 warn(){
379 log "WARNING: $*"
380 WARNINGS="${WARNINGS}WARNING: $*\n"
381 }
382
383 die(){
384 echolog "$@"
385 cat <<EOF
386
387 If you think configure made a mistake, make sure you are using the latest
388 version from Git. If the latest version fails, report the problem to the
389 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
390 EOF
391 if disabled logging; then
392 cat <<EOF
393 Rerun configure with logging enabled (do not use --disable-logging), and
394 include the log this produces with your report.
395 EOF
396 else
397 cat <<EOF
398 Include the log file "$logfile" produced by configure as this will help
399 solving the problem.
400 EOF
401 fi
402 exit 1
403 }
404
405 # Avoid locale weirdness, besides we really just want to translate ASCII.
406 toupper(){
407 echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
408 }
409
410 tolower(){
411 echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
412 }
413
414 c_escape(){
415 echo "$*" | sed 's/["\\]/\\\0/g'
416 }
417
418 sh_quote(){
419 v=$(echo "$1" | sed "s/'/'\\\\''/g")
420 test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
421 echo "$v"
422 }
423
424 cleanws(){
425 echo "$@" | sed 's/^ *//;s/ */ /g;s/ *$//'
426 }
427
428 filter(){
429 pat=$1
430 shift
431 for v; do
432 eval "case $v in $pat) printf '%s ' $v ;; esac"
433 done
434 }
435
436 filter_out(){
437 pat=$1
438 shift
439 for v; do
440 eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
441 done
442 }
443
444 map(){
445 m=$1
446 shift
447 for v; do eval $m; done
448 }
449
450 add_suffix(){
451 suffix=$1
452 shift
453 for v; do echo ${v}${suffix}; done
454 }
455
456 set_all(){
457 value=$1
458 shift
459 for var in $*; do
460 eval $var=$value
461 done
462 }
463
464 set_weak(){
465 value=$1
466 shift
467 for var; do
468 eval : \${$var:=$value}
469 done
470 }
471
472 sanitize_var_name(){
473 echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
474 }
475
476 set_safe(){
477 var=$1
478 shift
479 eval $(sanitize_var_name "$var")='$*'
480 }
481
482 get_safe(){
483 eval echo \$$(sanitize_var_name "$1")
484 }
485
486 pushvar(){
487 for pvar in $*; do
488 eval level=\${${pvar}_level:=0}
489 eval ${pvar}_${level}="\$$pvar"
490 eval ${pvar}_level=$(($level+1))
491 done
492 }
493
494 popvar(){
495 for pvar in $*; do
496 eval level=\${${pvar}_level:-0}
497 test $level = 0 && continue
498 eval level=$(($level-1))
499 eval $pvar="\${${pvar}_${level}}"
500 eval ${pvar}_level=$level
501 eval unset ${pvar}_${level}
502 done
503 }
504
505 enable(){
506 set_all yes $*
507 }
508
509 disable(){
510 set_all no $*
511 }
512
513 enable_weak(){
514 set_weak yes $*
515 }
516
517 disable_weak(){
518 set_weak no $*
519 }
520
521 enable_safe(){
522 for var; do
523 enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
524 done
525 }
526
527 disable_safe(){
528 for var; do
529 disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
530 done
531 }
532
533 do_enable_deep(){
534 for var; do
535 enabled $var && continue
536 eval sel="\$${var}_select"
537 eval sgs="\$${var}_suggest"
538 pushvar var sgs
539 enable_deep $sel
540 popvar sgs
541 enable_deep_weak $sgs
542 popvar var
543 done
544 }
545
546 enable_deep(){
547 do_enable_deep $*
548 enable $*
549 }
550
551 enable_deep_weak(){
552 for var; do
553 disabled $var && continue
554 pushvar var
555 do_enable_deep $var
556 popvar var
557 enable_weak $var
558 done
559 }
560
561 enabled(){
562 test "${1#!}" = "$1" && op== || op=!=
563 eval test "x\$${1#!}" $op "xyes"
564 }
565
566 disabled(){
567 test "${1#!}" = "$1" && op== || op=!=
568 eval test "x\$${1#!}" $op "xno"
569 }
570
571 enabled_all(){
572 for opt; do
573 enabled $opt || return 1
574 done
575 }
576
577 disabled_all(){
578 for opt; do
579 disabled $opt || return 1
580 done
581 }
582
583 enabled_any(){
584 for opt; do
585 enabled $opt && return 0
586 done
587 }
588
589 disabled_any(){
590 for opt; do
591 disabled $opt && return 0
592 done
593 return 1
594 }
595
596 set_default(){
597 for opt; do
598 eval : \${$opt:=\$${opt}_default}
599 done
600 }
601
602 is_in(){
603 value=$1
604 shift
605 for var in $*; do
606 [ $var = $value ] && return 0
607 done
608 return 1
609 }
610
611 do_check_deps(){
612 for cfg; do
613 cfg="${cfg#!}"
614 enabled ${cfg}_checking && die "Circular dependency for $cfg."
615 disabled ${cfg}_checking && continue
616 enable ${cfg}_checking
617 append allopts $cfg
618
619 eval dep_all="\$${cfg}_deps"
620 eval dep_any="\$${cfg}_deps_any"
621 eval dep_sel="\$${cfg}_select"
622 eval dep_sgs="\$${cfg}_suggest"
623 eval dep_ifa="\$${cfg}_if"
624 eval dep_ifn="\$${cfg}_if_any"
625
626 pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
627 do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
628 popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
629
630 [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
631 [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
632 enabled_all $dep_all || disable $cfg
633 enabled_any $dep_any || disable $cfg
634 disabled_any $dep_sel && disable $cfg
635
636 if enabled $cfg; then
637 enable_deep $dep_sel
638 enable_deep_weak $dep_sgs
639 fi
640
641 disable ${cfg}_checking
642 done
643 }
644
645 check_deps(){
646 unset allopts
647
648 do_check_deps "$@"
649
650 for cfg in $allopts; do
651 enabled $cfg || continue
652 eval dep_extralibs="\$${cfg}_extralibs"
653 test -n "$dep_extralibs" && add_extralibs $dep_extralibs
654 done
655 }
656
657 print_config(){
658 pfx=$1
659 files=$2
660 shift 2
661 map 'eval echo "$v \${$v:-no}"' "$@" |
662 awk "BEGIN { split(\"$files\", files) }
663 {
664 c = \"$pfx\" toupper(\$1);
665 v = \$2;
666 sub(/yes/, 1, v);
667 sub(/no/, 0, v);
668 for (f in files) {
669 file = files[f];
670 if (file ~ /\\.h\$/) {
671 printf(\"#define %s %d\\n\", c, v) >>file;
672 } else if (file ~ /\\.asm\$/) {
673 printf(\"%%define %s %d\\n\", c, v) >>file;
674 } else if (file ~ /\\.mak\$/) {
675 n = -v ? \"\" : \"!\";
676 printf(\"%s%s=yes\\n\", n, c) >>file;
677 }
678 }
679 }"
680 }
681
682 print_enabled(){
683 suf=$1
684 shift
685 for v; do
686 enabled $v && printf "%s\n" ${v%$suf}
687 done
688 }
689
690 append(){
691 var=$1
692 shift
693 eval "$var=\"\$$var $*\""
694 }
695
696 prepend(){
697 var=$1
698 shift
699 eval "$var=\"$* \$$var\""
700 }
701
702 unique(){
703 var=$1
704 uniq_list=""
705 for tok in $(eval echo \$$var); do
706 uniq_list="$(filter_out $tok $uniq_list) $tok"
707 done
708 eval "$var=\"${uniq_list}\""
709 }
710
711 add_cppflags(){
712 append CPPFLAGS "$@"
713 }
714
715 add_cflags(){
716 append CFLAGS $($cflags_filter "$@")
717 }
718
719 add_asflags(){
720 append ASFLAGS $($asflags_filter "$@")
721 }
722
723 add_objcflags(){
724 append OBJCFLAGS $($objcflags_filter "$@")
725 }
726
727 add_ldflags(){
728 append LDFLAGS $($ldflags_filter "$@")
729 }
730
731 add_ldexeflags(){
732 append LDEXEFLAGS $($ldflags_filter "$@")
733 }
734
735 add_stripflags(){
736 append STRIPFLAGS "$@"
737 }
738
739 add_extralibs(){
740 prepend extralibs $($ldflags_filter "$@")
741 }
742
743 add_host_cppflags(){
744 append host_cppflags "$@"
745 }
746
747 add_host_cflags(){
748 append host_cflags $($host_cflags_filter "$@")
749 }
750
751 add_host_ldflags(){
752 append host_ldflags $($host_ldflags_filter "$@")
753 }
754
755 add_compat(){
756 append compat_objs $1
757 shift
758 map 'add_cppflags -D$v' "$@"
759 }
760
761 check_cmd(){
762 log "$@"
763 "$@" >> $logfile 2>&1
764 }
765
766 cc_o(){
767 eval printf '%s\\n' $CC_O
768 }
769
770 cc_e(){
771 eval printf '%s\\n' $CC_E
772 }
773
774 check_cc(){
775 log check_cc "$@"
776 cat > $TMPC
777 log_file $TMPC
778 check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
779 }
780
781 check_objcc(){
782 log check_objcc "$@"
783 cat > $TMPC
784 log_file $TMPC
785 check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
786 }
787
788 check_cpp(){
789 log check_cpp "$@"
790 cat > $TMPC
791 log_file $TMPC
792 check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
793 }
794
795 as_o(){
796 eval printf '%s\\n' $AS_O
797 }
798
799 check_as(){
800 log check_as "$@"
801 cat > $TMPS
802 log_file $TMPS
803 check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
804 }
805
806 check_inline_asm(){
807 log check_inline_asm "$@"
808 name="$1"
809 code="$2"
810 shift 2
811 disable $name
812 check_cc "$@" <<EOF && enable $name
813 void foo(void){ __asm__ volatile($code); }
814 EOF
815 }
816
817 check_insn(){
818 log check_insn "$@"
819 check_inline_asm ${1}_inline "\"$2\""
820 echo "$2" | check_as && enable ${1}_external || disable ${1}_external
821 }
822
823 check_yasm(){
824 log check_yasm "$@"
825 echo "$1" > $TMPS
826 log_file $TMPS
827 shift 1
828 check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
829 }
830
831 ld_o(){
832 eval printf '%s\\n' $LD_O
833 }
834
835 check_ld(){
836 log check_ld "$@"
837 flags=$(filter_out '-l*' "$@")
838 libs=$(filter '-l*' "$@")
839 check_cc $($cflags_filter $flags) || return
840 flags=$($ldflags_filter $flags)
841 libs=$($ldflags_filter $libs)
842 check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
843 }
844
845 print_include(){
846 hdr=$1
847 test "${hdr%.h}" = "${hdr}" &&
848 echo "#include $hdr" ||
849 echo "#include <$hdr>"
850 }
851
852 check_code(){
853 log check_code "$@"
854 check=$1
855 headers=$2
856 code=$3
857 shift 3
858 {
859 for hdr in $headers; do
860 print_include $hdr
861 done
862 echo "int main(void) { $code; return 0; }"
863 } | check_$check "$@"
864 }
865
866 check_cppflags(){
867 log check_cppflags "$@"
868 check_cpp "$@" <<EOF && append CPPFLAGS "$@"
869 int x;
870 EOF
871 }
872
873 test_cflags(){
874 log test_cflags "$@"
875 set -- $($cflags_filter "$@")
876 check_cc "$@" <<EOF
877 int x;
878 EOF
879 }
880
881 check_cflags(){
882 log check_cflags "$@"
883 test_cflags "$@" && add_cflags "$@"
884 }
885
886 test_objcflags(){
887 log test_objcflags "$@"
888 set -- $($objcflags_filter "$@")
889 check_objcc "$@" <<EOF
890 int x;
891 EOF
892 }
893
894 check_objcflags(){
895 log check_objcflags "$@"
896 test_objcflags "$@" && add_objcflags "$@"
897 }
898
899 test_ldflags(){
900 log test_ldflags "$@"
901 check_ld "$@" <<EOF
902 int main(void){ return 0; }
903 EOF
904 }
905
906 check_ldflags(){
907 log check_ldflags "$@"
908 test_ldflags "$@" && add_ldflags "$@"
909 }
910
911 test_stripflags(){
912 log test_stripflags "$@"
913 # call check_cc to get a fresh TMPO
914 check_cc <<EOF
915 int main(void) { return 0; }
916 EOF
917 check_cmd $strip $STRIPFLAGS "$@" $TMPO
918 }
919
920 check_stripflags(){
921 log check_stripflags "$@"
922 test_stripflags "$@" && add_stripflags "$@"
923 }
924
925 check_header(){
926 log check_header "$@"
927 header=$1
928 shift
929 disable_safe $header
930 check_cpp "$@" <<EOF && enable_safe $header
931 #include <$header>
932 int x;
933 EOF
934 }
935
936 check_func(){
937 log check_func "$@"
938 func=$1
939 shift
940 disable $func
941 check_ld "$@" <<EOF && enable $func
942 extern int $func();
943 int main(void){ $func(); }
944 EOF
945 }
946
947 check_mathfunc(){
948 log check_mathfunc "$@"
949 func=$1
950 narg=$2
951 shift 2
952 test $narg = 2 && args="f, g" || args="f"
953 disable $func
954 check_ld "$@" <<EOF && enable $func
955 #include <math.h>
956 float foo(float f, float g) { return $func($args); }
957 int main(void){ return 0; }
958 EOF
959 }
960
961 check_func_headers(){
962 log check_func_headers "$@"
963 headers=$1
964 funcs=$2
965 shift 2
966 {
967 for hdr in $headers; do
968 print_include $hdr
969 done
970 for func in $funcs; do
971 echo "long check_$func(void) { return (long) $func; }"
972 done
973 echo "int main(void) { return 0; }"
974 } | check_ld "$@" && enable $funcs && enable_safe $headers
975 }
976
977 check_cpp_condition(){
978 log check_cpp_condition "$@"
979 header=$1
980 condition=$2
981 shift 2
982 check_cpp "$@" <<EOF
983 #include <$header>
984 #if !($condition)
985 #error "unsatisfied condition: $condition"
986 #endif
987 EOF
988 }
989
990 test_cflags_cpp(){
991 log test_cflags_cpp "$@"
992 flags=$1
993 condition=$2
994 shift 2
995 set -- $($cflags_filter "$flags")
996 check_cpp "$@" <<EOF
997 #if !($condition)
998 #error "unsatisfied condition: $condition"
999 #endif
1000 EOF
1001 }
1002
1003 check_lib(){
1004 log check_lib "$@"
1005 headers="$1"
1006 funcs="$2"
1007 shift 2
1008 check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1009 }
1010
1011 check_pkg_config(){
1012 log check_pkg_config "$@"
1013 pkg="$1"
1014 headers="$2"
1015 funcs="$3"
1016 shift 3
1017 check_cmd $pkg_config --exists --print-errors $pkg || return
1018 pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1019 pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1020 check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1021 set_safe "${pkg}_cflags" $pkg_cflags &&
1022 set_safe "${pkg}_libs" $pkg_libs
1023 }
1024
1025 check_exec(){
1026 check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1027 }
1028
1029 check_exec_crash(){
1030 log check_exec_crash "$@"
1031 code=$(cat)
1032
1033 # exit() is not async signal safe. _Exit (C99) and _exit (POSIX)
1034 # are safe but may not be available everywhere. Thus we use
1035 # raise(SIGTERM) instead. The check is run in a subshell so we
1036 # can redirect the "Terminated" message from the shell. SIGBUS
1037 # is not defined by standard C so it is used conditionally.
1038
1039 (check_exec "$@") >> $logfile 2>&1 <<EOF
1040 #include <signal.h>
1041 static void sighandler(int sig){
1042 raise(SIGTERM);
1043 }
1044 int foo(void){
1045 $code
1046 }
1047 int (*func_ptr)(void) = foo;
1048 int main(void){
1049 signal(SIGILL, sighandler);
1050 signal(SIGFPE, sighandler);
1051 signal(SIGSEGV, sighandler);
1052 #ifdef SIGBUS
1053 signal(SIGBUS, sighandler);
1054 #endif
1055 return func_ptr();
1056 }
1057 EOF
1058 }
1059
1060 check_type(){
1061 log check_type "$@"
1062 headers=$1
1063 type=$2
1064 shift 2
1065 disable_safe "$type"
1066 check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1067 }
1068
1069 check_struct(){
1070 log check_struct "$@"
1071 headers=$1
1072 struct=$2
1073 member=$3
1074 shift 3
1075 disable_safe "${struct}_${member}"
1076 check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1077 enable_safe "${struct}_${member}"
1078 }
1079
1080 check_builtin(){
1081 log check_builtin "$@"
1082 name=$1
1083 headers=$2
1084 builtin=$3
1085 shift 3
1086 disable "$name"
1087 check_code ld "$headers" "$builtin" "$@" && enable "$name"
1088 }
1089
1090 check_compile_assert(){
1091 log check_compile_assert "$@"
1092 name=$1
1093 headers=$2
1094 condition=$3
1095 shift 3
1096 disable "$name"
1097 check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1098 }
1099
1100 require(){
1101 log require "$@"
1102 name="$1"
1103 headers="$2"
1104 func="$3"
1105 shift 3
1106 check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1107 }
1108
1109 require_pkg_config(){
1110 log require_pkg_config "$@"
1111 pkg="$1"
1112 check_pkg_config "$@" || die "ERROR: $pkg not found"
1113 add_cflags $(get_safe "${pkg}_cflags")
1114 add_extralibs $(get_safe "${pkg}_libs")
1115 }
1116
1117 hostcc_e(){
1118 eval printf '%s\\n' $HOSTCC_E
1119 }
1120
1121 hostcc_o(){
1122 eval printf '%s\\n' $HOSTCC_O
1123 }
1124
1125 check_host_cc(){
1126 log check_host_cc "$@"
1127 cat > $TMPC
1128 log_file $TMPC
1129 check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1130 }
1131
1132 check_host_cpp(){
1133 log check_host_cpp "$@"
1134 cat > $TMPC
1135 log_file $TMPC
1136 check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1137 }
1138
1139 check_host_cppflags(){
1140 log check_host_cppflags "$@"
1141 check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1142 int x;
1143 EOF
1144 }
1145
1146 check_host_cflags(){
1147 log check_host_cflags "$@"
1148 set -- $($host_cflags_filter "$@")
1149 check_host_cc "$@" <<EOF && append host_cflags "$@"
1150 int x;
1151 EOF
1152 }
1153
1154 check_host_cpp_condition(){
1155 log check_host_cpp_condition "$@"
1156 header=$1
1157 condition=$2
1158 shift 2
1159 check_host_cpp "$@" <<EOF
1160 #include <$header>
1161 #if !($condition)
1162 #error "unsatisfied condition: $condition"
1163 #endif
1164 EOF
1165 }
1166
1167 apply(){
1168 file=$1
1169 shift
1170 "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1171 }
1172
1173 cp_if_changed(){
1174 cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1175 mkdir -p "$(dirname $2)"
1176 cp -f "$1" "$2"
1177 }
1178
1179 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1180 # system-dependent things.
1181
1182 AVCODEC_COMPONENTS="
1183 bsfs
1184 decoders
1185 encoders
1186 hwaccels
1187 parsers
1188 "
1189
1190 AVDEVICE_COMPONENTS="
1191 indevs
1192 outdevs
1193 "
1194 AVFILTER_COMPONENTS="
1195 filters
1196 "
1197 AVFORMAT_COMPONENTS="
1198 demuxers
1199 muxers
1200 protocols
1201 "
1202
1203 AVRESAMPLE_COMPONENTS=""
1204 AVUTIL_COMPONENTS=""
1205
1206 COMPONENT_LIST="
1207 $AVCODEC_COMPONENTS
1208 $AVDEVICE_COMPONENTS
1209 $AVFILTER_COMPONENTS
1210 $AVFORMAT_COMPONENTS
1211 $AVRESAMPLE_COMPONENTS
1212 $AVUTIL_COMPONENTS
1213 "
1214
1215 EXAMPLE_LIST="
1216 decode_audio_example
1217 decode_video_example
1218 encode_audio_example
1219 encode_video_example
1220 filter_audio_example
1221 metadata_example
1222 output_example
1223 qsvdec_example
1224 transcode_aac_example
1225 "
1226
1227 HWACCEL_LIBRARY_NONFREE_LIST="
1228 cuda
1229 libnpp
1230 "
1231 HWACCEL_LIBRARY_LIST="
1232 $HWACCEL_LIBRARY_NONFREE_LIST
1233 d3d11va
1234 dxva2
1235 libmfx
1236 mmal
1237 nvenc
1238 omx
1239 vaapi
1240 vda
1241 vdpau
1242 "
1243
1244 EXTERNAL_LIBRARY_GPL_LIST="
1245 libcdio
1246 libx264
1247 libx265
1248 libxavs
1249 libxvid
1250 "
1251
1252 EXTERNAL_LIBRARY_NONFREE_LIST="
1253 libfaac
1254 libfdk_aac
1255 openssl
1256 "
1257
1258 EXTERNAL_LIBRARY_VERSION3_LIST="
1259 libopencore_amrnb
1260 libopencore_amrwb
1261 libvo_aacenc
1262 libvo_amrwbenc
1263 "
1264
1265 EXTERNAL_LIBRARY_LIST="
1266 $EXTERNAL_LIBRARY_GPL_LIST
1267 $EXTERNAL_LIBRARY_NONFREE_LIST
1268 $EXTERNAL_LIBRARY_VERSION3_LIST
1269 avisynth
1270 bzlib
1271 frei0r
1272 gnutls
1273 libbs2b
1274 libdc1394
1275 libdcadec
1276 libfontconfig
1277 libfreetype
1278 libgsm
1279 libhdcd
1280 libilbc
1281 libkvazaar
1282 libmp3lame
1283 libopencv
1284 libopenh264
1285 libopenjpeg
1286 libopus
1287 libpulse
1288 librtmp
1289 libschroedinger
1290 libsnappy
1291 libspeex
1292 libtheora
1293 libtwolame
1294 libvorbis
1295 libvpx
1296 libwavpack
1297 libwebp
1298 libxcb
1299 libxcb_shm
1300 libxcb_xfixes
1301 zlib
1302 "
1303
1304 FEATURE_LIST="
1305 gray
1306 hardcoded_tables
1307 omx_rpi
1308 runtime_cpudetect
1309 safe_bitstream_reader
1310 shared
1311 small
1312 sram
1313 static
1314 swscale_alpha
1315 "
1316
1317 LIBRARY_LIST="
1318 avcodec
1319 avdevice
1320 avfilter
1321 avformat
1322 avresample
1323 avutil
1324 swscale
1325 "
1326
1327 LICENSE_LIST="
1328 gpl
1329 nonfree
1330 version3
1331 "
1332
1333 PROGRAM_LIST="
1334 avconv
1335 avplay
1336 avprobe
1337 "
1338
1339 SUBSYSTEM_LIST="
1340 dct
1341 doc
1342 error_resilience
1343 faan
1344 fft
1345 lsp
1346 lzo
1347 mdct
1348 network
1349 rdft
1350 "
1351
1352 CONFIG_LIST="
1353 $COMPONENT_LIST
1354 $EXAMPLE_LIST
1355 $EXTERNAL_LIBRARY_LIST
1356 $HWACCEL_LIBRARY_LIST
1357 $FEATURE_LIST
1358 $LICENSE_LIST
1359 $LIBRARY_LIST
1360 $PROGRAM_LIST
1361 $SUBSYSTEM_LIST
1362 neon_clobber_test
1363 pic
1364 pod2man
1365 texi2html
1366 thumb
1367 valgrind_backtrace
1368 xmm_clobber_test
1369 "
1370
1371 THREADS_LIST="
1372 pthreads
1373 w32threads
1374 "
1375
1376 ATOMICS_LIST="
1377 atomics_gcc
1378 atomics_suncc
1379 atomics_win32
1380 "
1381
1382 ARCH_LIST="
1383 aarch64
1384 alpha
1385 arm
1386 avr32
1387 avr32_ap
1388 avr32_uc
1389 bfin
1390 ia64
1391 m68k
1392 mips
1393 mips64
1394 parisc
1395 ppc
1396 ppc64
1397 s390
1398 sh4
1399 sparc
1400 sparc64
1401 tilegx
1402 tilepro
1403 tomi
1404 x86
1405 x86_32
1406 x86_64
1407 "
1408
1409 ARCH_EXT_LIST_ARM="
1410 armv5te
1411 armv6
1412 armv6t2
1413 armv8
1414 neon
1415 vfp
1416 vfpv3
1417 "
1418
1419 ARCH_EXT_LIST_X86_SIMD="
1420 amd3dnow
1421 amd3dnowext
1422 avx
1423 avx2
1424 fma3
1425 fma4
1426 mmx
1427 mmxext
1428 sse
1429 sse2
1430 sse3
1431 sse4
1432 sse42
1433 ssse3
1434 xop
1435 "
1436
1437 ARCH_EXT_LIST_PPC="
1438 altivec
1439 dcbzl
1440 ldbrx
1441 power8
1442 ppc4xx
1443 vsx
1444 "
1445
1446 ARCH_EXT_LIST_X86="
1447 $ARCH_EXT_LIST_X86_SIMD
1448 cpunop
1449 i686
1450 "
1451
1452 ARCH_EXT_LIST_MIPS="
1453 loongson
1454 mips32r1
1455 mips64r1
1456 mips32r2
1457 mips64r2
1458 mips32r6
1459 mips64r6
1460 "
1461
1462 ARCH_EXT_LIST="
1463 $ARCH_EXT_LIST_ARM
1464 $ARCH_EXT_LIST_MIPS
1465 $ARCH_EXT_LIST_PPC
1466 $ARCH_EXT_LIST_X86
1467 vis
1468 "
1469
1470 ARCH_FEATURES="
1471 aligned_stack
1472 fast_64bit
1473 fast_clz
1474 fast_cmov
1475 local_aligned_8
1476 local_aligned_16
1477 local_aligned_32
1478 simd_align_16
1479 simd_align_32
1480 "
1481
1482 BUILTIN_LIST="
1483 atomic_cas_ptr
1484 machine_rw_barrier
1485 MemoryBarrier
1486 mm_empty
1487 rdtsc
1488 sem_timedwait
1489 sync_val_compare_and_swap
1490 "
1491 HAVE_LIST_CMDLINE="
1492 inline_asm
1493 symver
1494 yasm
1495 "
1496
1497 HAVE_LIST_PUB="
1498 bigendian
1499 fast_unaligned
1500 "
1501
1502 HEADERS_LIST="
1503 AVFoundation_AVFoundation_h
1504 alsa_asoundlib_h
1505 altivec_h
1506 arpa_inet_h
1507 cdio_paranoia_h
1508 cdio_paranoia_paranoia_h
1509 dispatch_dispatch_h
1510 dev_bktr_ioctl_bt848_h
1511 dev_bktr_ioctl_meteor_h
1512 dev_ic_bt8xx_h
1513 dev_video_bktr_ioctl_bt848_h
1514 dev_video_meteor_ioctl_meteor_h
1515 direct_h
1516 dlfcn_h
1517 d3d11_h
1518 dxva_h
1519 gsm_h
1520 io_h
1521 mach_mach_time_h
1522 machine_ioctl_bt848_h
1523 machine_ioctl_meteor_h
1524 malloc_h
1525 poll_h
1526 sndio_h
1527 soundcard_h
1528 stdatomic_h
1529 sys_mman_h
1530 sys_param_h
1531 sys_resource_h
1532 sys_select_h
1533 sys_soundcard_h
1534 sys_time_h
1535 sys_un_h
1536 sys_videoio_h
1537 unistd_h
1538 valgrind_valgrind_h
1539 windows_h
1540 winsock2_h
1541 "
1542
1543 INTRINSICS_LIST="
1544 intrinsics_neon
1545 "
1546
1547 MATH_FUNCS="
1548 atanf
1549 atan2f
1550 cbrtf
1551 cosf
1552 exp2
1553 exp2f
1554 expf
1555 isinf
1556 isnan
1557 ldexpf
1558 llrint
1559 llrintf
1560 log2
1561 log2f
1562 log10f
1563 lrint
1564 lrintf
1565 powf
1566 rint
1567 round
1568 roundf
1569 sinf
1570 trunc
1571 truncf
1572 "
1573
1574 SYSTEM_FUNCS="
1575 aligned_malloc
1576 clock_gettime
1577 closesocket
1578 CommandLineToArgvW
1579 CoTaskMemFree
1580 CryptGenRandom
1581 dlopen
1582 fcntl
1583 flt_lim
1584 fork
1585 getaddrinfo
1586 gethrtime
1587 getopt
1588 GetProcessAffinityMask
1589 GetProcessMemoryInfo
1590 GetProcessTimes
1591 getrusage
1592 GetSystemTimeAsFileTime
1593 gettimeofday
1594 gmtime_r
1595 inet_aton
1596 isatty
1597 jack_port_get_latency_range
1598 LoadLibrary
1599 localtime_r
1600 mach_absolute_time
1601 MapViewOfFile
1602 memalign
1603 mkstemp
1604 mmap
1605 mprotect
1606 nanosleep
1607 posix_memalign
1608 sched_getaffinity
1609 SetConsoleTextAttribute
1610 setmode
1611 setrlimit
1612 Sleep
1613 strerror_r
1614 sysconf
1615 sysctl
1616 usleep
1617 VirtualAlloc
1618 "
1619
1620 TOOLCHAIN_FEATURES="
1621 as_dn_directive
1622 as_fpu_directive
1623 as_func
1624 as_object_arch
1625 asm_mod_q
1626 attribute_may_alias
1627 attribute_packed
1628 ebp_available
1629 ebx_available
1630 gnu_as
1631 ibm_asm
1632 inline_asm_labels
1633 pragma_deprecated
1634 symver_asm_label
1635 symver_gnu_asm
1636 vfp_args
1637 xform_asm
1638 xmm_clobbers
1639 "
1640
1641 TYPES_LIST="
1642 CONDITION_VARIABLE_Ptr
1643 socklen_t
1644 struct_addrinfo
1645 struct_group_source_req
1646 struct_ip_mreq_source
1647 struct_ipv6_mreq
1648 struct_pollfd
1649 struct_rusage_ru_maxrss
1650 struct_sockaddr_in6
1651 struct_sockaddr_sa_len
1652 struct_sockaddr_storage
1653 struct_v4l2_frmivalenum_discrete
1654 "
1655
1656 HAVE_LIST="
1657 $ARCH_EXT_LIST
1658 $(add_suffix _external $ARCH_EXT_LIST)
1659 $(add_suffix _inline $ARCH_EXT_LIST)
1660 $ARCH_FEATURES
1661 $BUILTIN_LIST
1662 $HAVE_LIST_CMDLINE
1663 $HAVE_LIST_PUB
1664 $HEADERS_LIST
1665 $INTRINSICS_LIST
1666 $MATH_FUNCS
1667 $SYSTEM_FUNCS
1668 $THREADS_LIST
1669 $TOOLCHAIN_FEATURES
1670 $TYPES_LIST
1671 dos_paths
1672 dxva2_lib
1673 libc_msvcrt
1674 MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1675 sdl
1676 section_data_rel_ro
1677 threads
1678 vaapi_drm
1679 vaapi_x11
1680 vdpau_x11
1681 "
1682
1683 # options emitted with CONFIG_ prefix but not available on the command line
1684 CONFIG_EXTRA="
1685 aandcttables
1686 ac3dsp
1687 audio_frame_queue
1688 audiodsp
1689 blockdsp
1690 bswapdsp
1691 cabac
1692 dirac_parse
1693 dvprofile
1694 faandct
1695 faanidct
1696 fdctdsp
1697 flacdsp
1698 fmtconvert
1699 g722dsp
1700 gmp
1701 golomb
1702 gplv3
1703 h263dsp
1704 h264chroma
1705 h264dsp
1706 h264parse
1707 h264pred
1708 h264qpel
1709 hpeldsp
1710 huffman
1711 huffyuvdsp
1712 huffyuvencdsp
1713 idctdsp
1714 iirfilter
1715 imdct15
1716 intrax8
1717 iso_media
1718 ividsp
1719 jpegtables
1720 libx262
1721 lgplv3
1722 lpc
1723 lzf
1724 me_cmp
1725 mpeg_er
1726 mpegaudio
1727 mpegaudiodsp
1728 mpegvideo
1729 mpegvideoenc
1730 mss34dsp
1731 pixblockdsp
1732 qpeldsp
1733 qsv
1734 qsvdec
1735 qsvenc
1736 rangecoder
1737 riffdec
1738 riffenc
1739 rtpdec
1740 rtpenc_chain
1741 rv34dsp
1742 sinewin
1743 snappy
1744 srtp
1745 startcode
1746 texturedsp
1747 texturedspenc
1748 tpeldsp
1749 vaapi_encode
1750 vc1dsp
1751 videodsp
1752 vp3dsp
1753 vp56dsp
1754 vp8dsp
1755 wma_freqs
1756 wmv2dsp
1757 "
1758
1759 CMDLINE_SELECT="
1760 $ARCH_EXT_LIST
1761 $CONFIG_LIST
1762 $HAVE_LIST_CMDLINE
1763 $THREADS_LIST
1764 asm
1765 cross_compile
1766 debug
1767 extra_warnings
1768 logging
1769 lto
1770 optimizations
1771 rpath
1772 "
1773
1774 PATHS_LIST="
1775 bindir
1776 datadir
1777 docdir
1778 incdir
1779 libdir
1780 mandir
1781 prefix
1782 shlibdir
1783 "
1784
1785 CMDLINE_SET="
1786 $PATHS_LIST
1787 ar
1788 arch
1789 as
1790 build_suffix
1791 cc
1792 objcc
1793 cpu
1794 cross_prefix
1795 custom_allocator
1796 dep_cc
1797 env
1798 extra_version
1799 host_cc
1800 host_cflags
1801 host_ld
1802 host_ldflags
1803 host_libs
1804 host_os
1805 ld
1806 logfile
1807 malloc_prefix
1808 nm
1809 optflags
1810 pkg_config
1811 pkg_config_flags
1812 random_seed
1813 samples
1814 sysinclude
1815 sysroot
1816 target_exec
1817 target_os
1818 target_path
1819 target_samples
1820 toolchain
1821 "
1822
1823 CMDLINE_APPEND="
1824 extra_cflags
1825 extra_objcflags
1826 host_cppflags
1827 "
1828
1829 # code dependency declarations
1830
1831 # architecture extensions
1832
1833 armv5te_deps="arm"
1834 armv6_deps="arm"
1835 armv6t2_deps="arm"
1836 armv8_deps="aarch64"
1837 neon_deps_any="aarch64 arm"
1838 intrinsics_neon_deps="neon"
1839 vfp_deps_any="aarch64 arm"
1840 vfpv3_deps="vfp"
1841
1842 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1843
1844 altivec_deps="ppc"
1845 ppc4xx_deps="ppc"
1846 vsx_deps="altivec"
1847 power8_deps="vsx"
1848
1849 cpunop_deps="i686"
1850 x86_64_select="i686"
1851 x86_64_suggest="fast_cmov"
1852
1853 amd3dnow_deps="mmx"
1854 amd3dnowext_deps="amd3dnow"
1855 i686_deps="x86"
1856 mmx_deps="x86"
1857 mmxext_deps="mmx"
1858 sse_deps="mmxext"
1859 sse2_deps="sse"
1860 sse3_deps="sse2"
1861 ssse3_deps="sse3"
1862 sse4_deps="ssse3"
1863 sse42_deps="sse4"
1864 avx_deps="sse42"
1865 xop_deps="avx"
1866 fma3_deps="avx"
1867 fma4_deps="avx"
1868 avx2_deps="avx"
1869
1870 mmx_external_deps="yasm"
1871 mmx_inline_deps="inline_asm"
1872 mmx_suggest="mmx_external mmx_inline"
1873
1874 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1875 eval dep=\$${ext}_deps
1876 eval ${ext}_external_deps='"${dep}_external"'
1877 eval ${ext}_inline_deps='"${dep}_inline"'
1878 eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1879 done
1880
1881 aligned_stack_if_any="aarch64 ppc x86"
1882 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1883 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1884 fast_unaligned_if_any="aarch64 ppc x86"
1885 simd_align_16_if_any="altivec neon sse"
1886 simd_align_32_if_any="avx"
1887
1888 # system capabilities
1889 symver_if_any="symver_asm_label symver_gnu_asm"
1890 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1891
1892 # threading support
1893 atomics_gcc_if="sync_val_compare_and_swap"
1894 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1895 atomics_win32_if="MemoryBarrier"
1896 atomics_native_if_any="$ATOMICS_LIST"
1897 w32threads_deps="atomics_native"
1898 threads_if_any="$THREADS_LIST"
1899
1900 # subsystems
1901 dct_select="rdft"
1902 dirac_parse_select="golomb"
1903 error_resilience_select="me_cmp"
1904 faandct_deps="faan fdctdsp"
1905 faanidct_deps="faan idctdsp"
1906 h264dsp_select="startcode"
1907 intrax8_select="blockdsp idctdsp"
1908 mdct_select="fft"
1909 rdft_select="fft"
1910 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1911 mpeg_er_select="error_resilience"
1912 mpegaudio_select="mpegaudiodsp"
1913 mpegaudiodsp_select="dct"
1914 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1915 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1916 vc1dsp_select="h264chroma qpeldsp startcode"
1917
1918 # decoders / encoders
1919 aac_decoder_select="imdct15 mdct sinewin"
1920 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1921 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1922 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1923 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1924 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1925 adpcm_g722_decoder_select="g722dsp"
1926 adpcm_g722_encoder_select="g722dsp"
1927 aic_decoder_select="golomb idctdsp"
1928 alac_encoder_select="lpc"
1929 als_decoder_select="bswapdsp"
1930 amrnb_decoder_select="lsp"
1931 amrwb_decoder_select="lsp"
1932 amv_decoder_select="sp5x_decoder"
1933 ape_decoder_select="bswapdsp"
1934 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1935 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1936 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1937 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1938 atrac1_decoder_select="mdct sinewin"
1939 atrac3_decoder_select="mdct"
1940 atrac3p_decoder_select="mdct sinewin"
1941 bink_decoder_select="blockdsp hpeldsp"
1942 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1943 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1944 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1945 cllc_decoder_select="bswapdsp"
1946 comfortnoise_encoder_select="lpc"
1947 cook_decoder_select="audiodsp mdct sinewin"
1948 cscd_decoder_select="lzo"
1949 cscd_decoder_suggest="zlib"
1950 dca_decoder_select="fmtconvert mdct"
1951 dds_decoder_select="texturedsp"
1952 dnxhd_decoder_select="blockdsp idctdsp"
1953 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1954 dvvideo_decoder_select="dvprofile idctdsp"
1955 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1956 dxa_decoder_deps="zlib"
1957 dxv_decoder_select="lzf texturedsp"
1958 eac3_decoder_select="ac3_decoder"
1959 eac3_encoder_select="ac3_encoder"
1960 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1961 eatgq_decoder_select="aandcttables idctdsp"
1962 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1963 exr_decoder_deps="zlib"
1964 ffv1_decoder_select="golomb rangecoder"
1965 ffv1_encoder_select="rangecoder"
1966 ffvhuff_decoder_select="huffyuv_decoder"
1967 ffvhuff_encoder_select="huffyuv_encoder"
1968 fic_decoder_select="golomb"
1969 flac_decoder_select="flacdsp golomb"
1970 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1971 flashsv_decoder_deps="zlib"
1972 flashsv_encoder_deps="zlib"
1973 flashsv2_decoder_deps="zlib"
1974 flv_decoder_select="h263_decoder"
1975 flv_encoder_select="h263_encoder"
1976 fourxm_decoder_select="blockdsp bswapdsp"
1977 fraps_decoder_select="bswapdsp huffman"
1978 g2m_decoder_deps="zlib"
1979 g2m_decoder_select="blockdsp idctdsp jpegtables"
1980 h261_decoder_select="mpeg_er mpegvideo"
1981 h261_encoder_select="aandcttables mpegvideoenc"
1982 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1983 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1984 h263i_decoder_select="h263_decoder"
1985 h263p_encoder_select="h263_encoder"
1986 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1987 h264_decoder_suggest="error_resilience"
1988 hap_decoder_select="snappy texturedsp"
1989 hap_encoder_deps="libsnappy"
1990 hap_encoder_select="texturedspenc"
1991 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1992 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1993 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1994 iac_decoder_select="imc_decoder"
1995 imc_decoder_select="bswapdsp fft mdct sinewin"
1996 indeo3_decoder_select="hpeldsp"
1997 indeo4_decoder_select="ividsp"
1998 indeo5_decoder_select="ividsp"
1999 interplay_video_decoder_select="hpeldsp"
2000 jpegls_decoder_select="golomb mjpeg_decoder"
2001 jpegls_encoder_select="golomb"
2002 jv_decoder_select="blockdsp"
2003 lagarith_decoder_select="huffyuvdsp"
2004 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2005 loco_decoder_select="golomb"
2006 magicyuv_decoder_select="huffyuvdsp"
2007 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2008 metasound_decoder_select="lsp mdct sinewin"
2009 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2010 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2011 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2012 mjpegb_decoder_select="mjpeg_decoder"
2013 mlp_decoder_select="mlp_parser"
2014 motionpixels_decoder_select="bswapdsp"
2015 mp1_decoder_select="mpegaudio"
2016 mp1float_decoder_select="mpegaudio"
2017 mp2_decoder_select="mpegaudio"
2018 mp2float_decoder_select="mpegaudio"
2019 mp3_decoder_select="mpegaudio"
2020 mp3adu_decoder_select="mpegaudio"
2021 mp3adufloat_decoder_select="mpegaudio"
2022 mp3float_decoder_select="mpegaudio"
2023 mp3on4_decoder_select="mpegaudio"
2024 mp3on4float_decoder_select="mpegaudio"
2025 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2026 mpc8_decoder_select="mpegaudiodsp"
2027 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2028 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2029 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2030 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2031 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2032 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2033 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2034 mpeg4_encoder_select="h263_encoder"
2035 msa1_decoder_select="mss34dsp"
2036 msmpeg4v1_decoder_select="h263_decoder"
2037 msmpeg4v2_decoder_select="h263_decoder"
2038 msmpeg4v2_encoder_select="h263_encoder"
2039 msmpeg4v3_decoder_select="h263_decoder"
2040 msmpeg4v3_encoder_select="h263_encoder"
2041 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2042 mts2_decoder_select="mss34dsp"
2043 mxpeg_decoder_select="mjpeg_decoder"
2044 nellymoser_decoder_select="mdct sinewin"
2045 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2046 nuv_decoder_select="idctdsp lzo"
2047 on2avc_decoder_select="mdct"
2048 opus_decoder_deps="avresample"
2049 opus_decoder_select="imdct15"
2050 png_decoder_deps="zlib"
2051 png_encoder_deps="zlib"
2052 png_encoder_select="huffyuvencdsp"
2053 prores_decoder_select="idctdsp"
2054 prores_encoder_select="fdctdsp"
2055 qcelp_decoder_select="lsp"
2056 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2057 ra_144_encoder_select="audio_frame_queue lpc"
2058 ralf_decoder_select="golomb"
2059 rscc_decoder_deps="zlib"
2060 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2061 rv10_encoder_select="h263_encoder"
2062 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2063 rv20_encoder_select="h263_encoder"
2064 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2065 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2066 screenpresso_decoder_deps="zlib"
2067 shorten_decoder_select="golomb"
2068 sipr_decoder_select="lsp"
2069 sp5x_decoder_select="mjpeg_decoder"
2070 svq1_decoder_select="hpeldsp"
2071 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2072 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2073 svq3_decoder_suggest="zlib"
2074 tak_decoder_select="audiodsp"
2075 tdsc_decoder_deps="zlib"
2076 tdsc_decoder_select="mjpeg_decoder"
2077 theora_decoder_select="vp3_decoder"
2078 thp_decoder_select="mjpeg_decoder"
2079 tiff_decoder_suggest="zlib"
2080 tiff_encoder_suggest="zlib"
2081 truehd_decoder_select="mlp_decoder"
2082 truemotion2_decoder_select="bswapdsp"
2083 truespeech_decoder_select="bswapdsp"
2084 tscc_decoder_deps="zlib"
2085 txd_decoder_select="texturedsp"
2086 twinvq_decoder_select="mdct lsp sinewin"
2087 utvideo_decoder_select="bswapdsp"
2088 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2089 vble_decoder_select="huffyuvdsp"
2090 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2091 vc1image_decoder_select="vc1_decoder"
2092 vorbis_decoder_select="mdct"
2093 vorbis_encoder_select="mdct"
2094 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2095 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2096 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2097 vp6a_decoder_select="vp6_decoder"
2098 vp6f_decoder_select="vp6_decoder"
2099 vp7_decoder_select="h264pred videodsp vp8dsp"
2100 vp8_decoder_select="h264pred videodsp vp8dsp"
2101 vp9_decoder_select="videodsp"
2102 webp_decoder_select="vp8_decoder"
2103 wmapro_decoder_select="mdct sinewin wma_freqs"
2104 wmav1_decoder_select="mdct sinewin wma_freqs"
2105 wmav1_encoder_select="mdct sinewin wma_freqs"
2106 wmav2_decoder_select="mdct sinewin wma_freqs"
2107 wmav2_encoder_select="mdct sinewin wma_freqs"
2108 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2109 wmv1_decoder_select="h263_decoder"
2110 wmv1_encoder_select="h263_encoder"
2111 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2112 wmv2_encoder_select="h263_encoder wmv2dsp"
2113 wmv3_decoder_select="vc1_decoder"
2114 wmv3image_decoder_select="wmv3_decoder"
2115 zerocodec_decoder_deps="zlib"
2116 zlib_decoder_deps="zlib"
2117 zlib_encoder_deps="zlib"
2118 zmbv_decoder_deps="zlib"
2119 zmbv_encoder_deps="zlib"
2120
2121 # hardware accelerators
2122 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2123 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2124 vaapi_deps="va_va_h"
2125 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2126 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2127 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2128
2129 h263_vaapi_hwaccel_deps="vaapi"
2130 h263_vaapi_hwaccel_select="h263_decoder"
2131 h264_d3d11va_hwaccel_deps="d3d11va"
2132 h264_d3d11va_hwaccel_select="h264_decoder"
2133 h264_dxva2_hwaccel_deps="dxva2"
2134 h264_dxva2_hwaccel_select="h264_decoder"
2135 h264_mmal_hwaccel_deps="mmal"
2136 h264_qsv_hwaccel_deps="libmfx"
2137 h264_vaapi_hwaccel_deps="vaapi"
2138 h264_vaapi_hwaccel_select="h264_decoder"
2139 h264_vda_hwaccel_deps="vda"
2140 h264_vda_hwaccel_select="h264_decoder"
2141 h264_vda_old_hwaccel_deps="vda"
2142 h264_vda_old_hwaccel_select="h264_decoder"
2143 h264_vdpau_hwaccel_deps="vdpau"
2144 h264_vdpau_hwaccel_select="h264_decoder"
2145 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2146 hevc_d3d11va_hwaccel_select="hevc_decoder"
2147 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2148 hevc_dxva2_hwaccel_select="hevc_decoder"
2149 hevc_qsv_hwaccel_deps="libmfx"
2150 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2151 hevc_vdpau_hwaccel_select="hevc_decoder"
2152 mpeg1_vdpau_hwaccel_deps="vdpau"
2153 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2154 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2155 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2156 mpeg2_dxva2_hwaccel_deps="dxva2"
2157 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2158 mpeg2_mmal_hwaccel_deps="mmal"
2159 mpeg2_qsv_hwaccel_deps="libmfx"
2160 mpeg2_vaapi_hwaccel_deps="vaapi"
2161 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2162 mpeg2_vdpau_hwaccel_deps="vdpau"
2163 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2164 mpeg4_vaapi_hwaccel_deps="vaapi"
2165 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2166 mpeg4_vdpau_hwaccel_deps="vdpau"
2167 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2168 vc1_d3d11va_hwaccel_deps="d3d11va"
2169 vc1_d3d11va_hwaccel_select="vc1_decoder"
2170 vc1_dxva2_hwaccel_deps="dxva2"
2171 vc1_dxva2_hwaccel_select="vc1_decoder"
2172 vc1_mmal_hwaccel_deps="mmal"
2173 vc1_qsv_hwaccel_deps="libmfx"
2174 vc1_vaapi_hwaccel_deps="vaapi"
2175 vc1_vaapi_hwaccel_select="vc1_decoder"
2176 vc1_vdpau_hwaccel_deps="vdpau"
2177 vc1_vdpau_hwaccel_select="vc1_decoder"
2178 vp8_qsv_hwaccel_deps="libmfx"
2179 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2180 vp8_vaapi_hwaccel_select="vp8_decoder"
2181 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2182 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2183 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2184 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2185
2186 # hardware-accelerated codecs
2187 nvenc_deps_any="dlopen LoadLibrary"
2188 nvenc_extralibs='$ldl'
2189 omx_deps="dlopen pthreads"
2190 omx_extralibs='$ldl'
2191 qsvdec_select="qsv"
2192 qsvenc_select="qsv"
2193 vaapi_encode_deps="vaapi"
2194
2195 hwupload_cuda_filter_deps="cuda"
2196 scale_npp_filter_deps="cuda libnpp"
2197
2198 h264_mmal_decoder_deps="mmal"
2199 h264_nvenc_encoder_deps="nvenc"
2200 h264_omx_encoder_deps="omx"
2201 h264_qsv_decoder_deps="libmfx"
2202 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2203 h264_qsv_encoder_deps="libmfx"
2204 h264_qsv_encoder_select="qsvenc"
2205 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2206 h264_vaapi_encoder_select="vaapi_encode golomb"
2207 hevc_nvenc_encoder_deps="nvenc"
2208 hevc_qsv_decoder_deps="libmfx"
2209 hevc_qsv_encoder_deps="libmfx"
2210 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2211 hevc_qsv_encoder_select="qsvenc"
2212 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2213 hevc_vaapi_encoder_select="vaapi_encode golomb"
2214 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2215 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2216 mpeg2_mmal_decoder_deps="mmal"
2217 mpeg2_qsv_decoder_deps="libmfx"
2218 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2219 mpeg2_qsv_encoder_deps="libmfx"
2220 mpeg2_qsv_encoder_select="qsvenc"
2221 mpeg4_omx_encoder_deps="omx"
2222 vc1_mmal_decoder_deps="mmal"
2223 vc1_qsv_decoder_deps="libmfx"
2224 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2225 vp8_qsv_decoder_deps="libmfx"
2226 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2227
2228 nvenc_h264_encoder_deps="nvenc"
2229 nvenc_hevc_encoder_deps="nvenc"
2230
2231 # parsers
2232 h264_parser_select="golomb h264dsp h264parse"
2233 hevc_parser_select="golomb"
2234 mpegvideo_parser_select="mpegvideo"
2235 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2236 vc1_parser_select="vc1dsp"
2237
2238 # bitstream_filters
2239 mjpeg2jpeg_bsf_select="jpegtables"
2240
2241 # external libraries
2242 libdcadec_decoder_deps="libdcadec"
2243 libfaac_encoder_deps="libfaac"
2244 libfaac_encoder_select="audio_frame_queue"
2245 libfdk_aac_decoder_deps="libfdk_aac"
2246 libfdk_aac_encoder_deps="libfdk_aac"
2247 libfdk_aac_encoder_select="audio_frame_queue"
2248 libgsm_decoder_deps="libgsm"
2249 libgsm_encoder_deps="libgsm"
2250 libgsm_ms_decoder_deps="libgsm"
2251 libgsm_ms_encoder_deps="libgsm"
2252 libilbc_decoder_deps="libilbc"
2253 libilbc_encoder_deps="libilbc"
2254 libkvazaar_encoder_deps="libkvazaar"
2255 libmp3lame_encoder_deps="libmp3lame"
2256 libmp3lame_encoder_select="audio_frame_queue"
2257 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2258 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2259 libopencore_amrnb_encoder_select="audio_frame_queue"
2260 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2261 libopenh264_decoder_deps="libopenh264"
2262 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2263 libopenh264_encoder_deps="libopenh264"
2264 libopenjpeg_decoder_deps="libopenjpeg"
2265 libopenjpeg_encoder_deps="libopenjpeg"
2266 libopus_decoder_deps="libopus"
2267 libopus_encoder_deps="libopus"
2268 libopus_encoder_select="audio_frame_queue"
2269 libschroedinger_decoder_deps="libschroedinger"
2270 libschroedinger_encoder_deps="libschroedinger"
2271 libspeex_decoder_deps="libspeex"
2272 libspeex_encoder_deps="libspeex"
2273 libspeex_encoder_select="audio_frame_queue"
2274 libtheora_encoder_deps="libtheora"
2275 libtwolame_encoder_deps="libtwolame"
2276 libvo_aacenc_encoder_deps="libvo_aacenc"
2277 libvo_aacenc_encoder_select="audio_frame_queue"
2278 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2279 libvorbis_encoder_deps="libvorbis"
2280 libvorbis_encoder_select="audio_frame_queue"
2281 libvpx_vp8_decoder_deps="libvpx"
2282 libvpx_vp8_encoder_deps="libvpx"
2283 libvpx_vp9_decoder_deps="libvpx"
2284 libvpx_vp9_encoder_deps="libvpx"
2285 libwavpack_encoder_deps="libwavpack"
2286 libwebp_encoder_deps="libwebp"
2287 libx262_encoder_deps="libx262"
2288 libx264_encoder_deps="libx264"
2289 libx265_encoder_deps="libx265"
2290 libxavs_encoder_deps="libxavs"
2291 libxvid_encoder_deps="libxvid mkstemp"
2292
2293 # demuxers / muxers
2294 ac3_demuxer_select="ac3_parser"
2295 asf_demuxer_select="riffdec"
2296 asf_muxer_select="riffenc"
2297 asf_stream_muxer_select="asf_muxer"
2298 avi_demuxer_select="iso_media riffdec"
2299 avi_muxer_select="riffenc"
2300 avisynth_demuxer_deps="avisynth"
2301 avisynth_demuxer_select="riffdec"
2302 caf_demuxer_select="iso_media riffdec"
2303 dash_muxer_select="mp4_muxer"
2304 dirac_demuxer_select="dirac_parser"
2305 dv_demuxer_select="dvprofile"
2306 dv_muxer_select="dvprofile"
2307 dxa_demuxer_select="riffdec"
2308 eac3_demuxer_select="ac3_parser"
2309 f4v_muxer_select="mov_muxer"
2310 flac_demuxer_select="flac_parser"
2311 hds_muxer_select="flv_muxer"
2312 hls_muxer_select="mpegts_muxer"
2313 ipod_muxer_select="mov_muxer"
2314 ismv_muxer_select="mov_muxer"
2315 matroska_audio_muxer_select="matroska_muxer"
2316 matroska_demuxer_select="iso_media riffdec"
2317 matroska_demuxer_suggest="bzlib lzo zlib"
2318 matroska_muxer_select="iso_media riffenc"
2319 mmf_muxer_select="riffenc"
2320 mov_demuxer_select="iso_media riffdec"
2321 mov_demuxer_suggest="zlib"
2322 mov_muxer_select="iso_media riffenc rtpenc_chain"
2323 mp3_demuxer_select="mpegaudio_parser"
2324 mp4_muxer_select="mov_muxer"
2325 mpegts_demuxer_select="iso_media"
2326 mpegts_muxer_select="adts_muxer latm_muxer"
2327 mpegtsraw_demuxer_select="mpegts_demuxer"
2328 mxf_d10_muxer_select="mxf_muxer"
2329 nut_muxer_select="riffenc"
2330 nuv_demuxer_select="riffdec"
2331 oga_muxer_select="ogg_muxer"
2332 ogg_demuxer_select="dirac_parse"
2333 opus_muxer_select="ogg_muxer"
2334 psp_muxer_select="mov_muxer"
2335 rtp_demuxer_select="sdp_demuxer"
2336 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2337 rtsp_demuxer_select="http_protocol rtpdec"
2338 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2339 sap_demuxer_select="sdp_demuxer"
2340 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2341 sdp_demuxer_select="rtpdec"
2342 smoothstreaming_muxer_select="ismv_muxer"
2343 spdif_muxer_select="aac_parser"
2344 spx_muxer_select="ogg_muxer"
2345 swf_demuxer_suggest="zlib"
2346 tak_demuxer_select="tak_parser"
2347 tg2_muxer_select="mov_muxer"
2348 tgp_muxer_select="mov_muxer"
2349 w64_demuxer_select="wav_demuxer"
2350 wav_demuxer_select="riffdec"
2351 wav_muxer_select="riffenc"
2352 webm_muxer_select="iso_media riffenc"
2353 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2354 wtv_demuxer_select="mpegts_demuxer riffdec"
2355 xmv_demuxer_select="riffdec"
2356 xwma_demuxer_select="riffdec"
2357
2358 # indevs / outdevs
2359 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2360 alsa_outdev_deps="alsa_asoundlib_h"
2361 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2362 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2363 dv1394_indev_deps="dv1394"
2364 dv1394_indev_select="dv_demuxer"
2365 fbdev_indev_deps="linux_fb_h"
2366 jack_indev_deps="jack_jack_h"
2367 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2368 libcdio_indev_deps="libcdio"
2369 libdc1394_indev_deps="libdc1394"
2370 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2371 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2372 pulse_indev_deps="libpulse"
2373 sndio_indev_deps="sndio_h"
2374 sndio_outdev_deps="sndio_h"
2375 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2376 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2377 vfwcap_indev_extralibs="-lavicap32"
2378 xcbgrab_indev_deps="libxcb"
2379
2380 # protocols
2381 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2382 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2383 ffrtmpcrypt_protocol_select="tcp_protocol"
2384 ffrtmphttp_protocol_deps="!librtmp_protocol"
2385 ffrtmphttp_protocol_select="http_protocol"
2386 gopher_protocol_select="network"
2387 http_protocol_select="tcp_protocol"
2388 httpproxy_protocol_select="tcp_protocol"
2389 https_protocol_select="tls_protocol"
2390 icecast_protocol_select="http_protocol"
2391 librtmp_protocol_deps="librtmp"
2392 librtmpe_protocol_deps="librtmp"
2393 librtmps_protocol_deps="librtmp"
2394 librtmpt_protocol_deps="librtmp"
2395 librtmpte_protocol_deps="librtmp"
2396 mmsh_protocol_select="http_protocol"
2397 mmst_protocol_select="network"
2398 rtmp_protocol_deps="!librtmp_protocol"
2399 rtmp_protocol_select="tcp_protocol"
2400 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2401 rtmps_protocol_deps="!librtmp_protocol"
2402 rtmps_protocol_select="tls_protocol"
2403 rtmpt_protocol_select="ffrtmphttp_protocol"
2404 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2405 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2406 rtp_protocol_select="udp_protocol"
2407 sctp_protocol_deps="struct_sctp_event_subscribe"
2408 sctp_protocol_select="network"
2409 srtp_protocol_select="rtp_protocol srtp"
2410 tcp_protocol_select="network"
2411 tls_gnutls_protocol_deps="gnutls"
2412 tls_gnutls_protocol_select="tcp_protocol"
2413 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2414 tls_openssl_protocol_select="tcp_protocol"
2415 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2416 udp_protocol_select="network"
2417 unix_protocol_deps="sys_un_h"
2418 unix_protocol_select="network"
2419
2420 # filters
2421 asyncts_filter_deps="avresample"
2422 blackframe_filter_deps="gpl"
2423 boxblur_filter_deps="gpl"
2424 bs2b_filter_deps="libbs2b"
2425 cropdetect_filter_deps="gpl"
2426 deinterlace_qsv_filter_deps="libmfx"
2427 delogo_filter_deps="gpl"
2428 drawtext_filter_deps="libfreetype"
2429 frei0r_filter_deps="frei0r dlopen"
2430 frei0r_filter_extralibs='$ldl'
2431 frei0r_src_filter_deps="frei0r dlopen"
2432 frei0r_src_filter_extralibs='$ldl'
2433 hdcd_filter_deps="libhdcd"
2434 hqdn3d_filter_deps="gpl"
2435 interlace_filter_deps="gpl"
2436 movie_filter_deps="avcodec avformat"
2437 ocv_filter_deps="libopencv"
2438 resample_filter_deps="avresample"
2439 scale_filter_deps="swscale"
2440 scale_qsv_filter_deps="libmfx"
2441 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2442
2443 # examples
2444 decode_audio_example_deps="avcodec avutil"
2445 decode_video_example_deps="avcodec avutil"
2446 encode_audio_example_deps="avcodec avutil"
2447 encode_video_example_deps="avcodec avutil"
2448 filter_audio_example_deps="avfilter avutil"
2449 metadata_example_deps="avformat avutil"
2450 output_example_deps="avcodec avformat avresample avutil swscale"
2451 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2452 transcode_aac_example_deps="avcodec avformat avresample"
2453
2454 # libraries, in linking order
2455 avcodec_deps="avutil"
2456 avdevice_deps="avformat avcodec avutil"
2457 avfilter_deps="avutil"
2458 avformat_deps="avcodec avutil"
2459 avresample_deps="avutil"
2460 swscale_deps="avutil"
2461
2462 # programs
2463 avconv_deps="avcodec avfilter avformat avresample swscale"
2464 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2465 fps_filter null_filter resample_filter scale_filter
2466 trim_filter"
2467 avplay_deps="avcodec avfilter avformat avresample sdl"
2468 avplay_libs='$sdl_libs'
2469 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2470 avprobe_deps="avcodec avformat"
2471
2472 # documentation
2473 pod2man_deps="doc"
2474 texi2html_deps="doc"
2475
2476 # default parameters
2477
2478 logfile="config.log"
2479
2480 # installation paths
2481 prefix_default="/usr/local"
2482 bindir_default='${prefix}/bin'
2483 datadir_default='${prefix}/share/avconv'
2484 docdir_default='${prefix}/share/doc/libav'
2485 incdir_default='${prefix}/include'
2486 libdir_default='${prefix}/lib'
2487 mandir_default='${prefix}/share/man'
2488 shlibdir_default="$libdir_default"
2489
2490 # toolchain
2491 ar_default="ar"
2492 cc_default="gcc"
2493 host_cc_default="gcc"
2494 ln_s="ln -s -f"
2495 nm_default="nm -g"
2496 objformat="elf"
2497 pkg_config_default=pkg-config
2498 ranlib="ranlib"
2499 strip="strip"
2500 version_script='--version-script'
2501 yasmexe="yasm"
2502
2503 # machine
2504 arch_default=$(uname -m)
2505 cpu="generic"
2506 intrinsics="none"
2507
2508 # OS
2509 target_os_default=$(tolower $(uname -s))
2510 host_os=$target_os_default
2511
2512 # configurable options
2513 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2514
2515 enable asm
2516 enable debug
2517 enable doc
2518 enable faan faandct faanidct
2519 enable optimizations
2520 enable safe_bitstream_reader
2521 enable static
2522 enable swscale_alpha
2523 enable valgrind_backtrace
2524
2525 # By default, enable only those hwaccels that have no external dependencies.
2526 enable d3d11va dxva2 vda vdpau
2527
2528 # build settings
2529 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2530 LIBPREF="lib"
2531 LIBSUF=".a"
2532 FULLNAME='$(NAME)$(BUILDSUF)'
2533 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2534 SLIBPREF="lib"
2535 SLIBSUF=".so"
2536 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2537 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2538 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2539 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2540 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2541 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2542 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2543
2544 asflags_filter=echo
2545 cflags_filter=echo
2546 ldflags_filter=echo
2547
2548 AS_C='-c'
2549 AS_O='-o $@'
2550 CC_C='-c'
2551 CC_E='-E -o $@'
2552 CC_O='-o $@'
2553 OBJCC_C='-c'
2554 OBJCC_E='-E -o $@'
2555 OBJCC_O='-o $@'
2556 LD_O='-o $@'
2557 LD_LIB='-l%'
2558 LD_PATH='-L'
2559 HOSTCC_C='-c'
2560 HOSTCC_E='-E -o $@'
2561 HOSTCC_O='-o $@'
2562 HOSTLD_O='-o $@'
2563
2564 host_libs='-lm'
2565 host_cflags_filter=echo
2566 host_ldflags_filter=echo
2567
2568 target_path='$(CURDIR)'
2569
2570 # since the object filename is not given with the -MM flag, the compiler
2571 # is only able to print the basename, and we must add the path ourselves
2572 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2573 DEPFLAGS='-MM'
2574
2575 # find source path
2576 if test -f configure; then
2577 source_path=.
2578 else
2579 source_path=$(cd $(dirname "$0"); pwd)
2580 echo "$source_path" | grep -q '[[:blank:]]' &&
2581 die "Out of tree builds are impossible with whitespace in source path."
2582 test -e "$source_path/config.h" &&
2583 die "Out of tree builds are impossible with config.h in source dir."
2584 fi
2585
2586 for v in "$@"; do
2587 r=${v#*=}
2588 l=${v%"$r"}
2589 r=$(sh_quote "$r")
2590 LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2591 done
2592
2593 find_things(){
2594 thing=$1
2595 pattern=$2
2596 file=$source_path/$3
2597 sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2598 }
2599
2600 ENCODER_LIST=$(find_things encoder ENC libavcodec/allcodecs.c)
2601 DECODER_LIST=$(find_things decoder DEC libavcodec/allcodecs.c)
2602 HWACCEL_LIST=$(find_things hwaccel HWACCEL libavcodec/allcodecs.c)
2603 PARSER_LIST=$(find_things parser PARSER libavcodec/allcodecs.c)
2604 MUXER_LIST=$(find_things muxer _MUX libavformat/allformats.c)
2605 DEMUXER_LIST=$(find_things demuxer DEMUX libavformat/allformats.c)
2606 OUTDEV_LIST=$(find_things outdev OUTDEV libavdevice/alldevices.c)
2607 INDEV_LIST=$(find_things indev _IN libavdevice/alldevices.c)
2608 FILTER_LIST=$(find_things filter FILTER libavfilter/allfilters.c)
2609
2610 find_things_extern(){
2611 thing=$1
2612 pattern=$2
2613 file=$source_path/$3
2614 sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2615 }
2616
2617 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2618 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2619
2620 ALL_COMPONENTS="
2621 $BSF_LIST
2622 $DECODER_LIST
2623 $DEMUXER_LIST
2624 $ENCODER_LIST
2625 $FILTER_LIST
2626 $HWACCEL_LIST
2627 $INDEV_LIST
2628 $MUXER_LIST
2629 $OUTDEV_LIST
2630 $PARSER_LIST
2631 $PROTOCOL_LIST
2632 "
2633
2634 for n in $COMPONENT_LIST; do
2635 v=$(toupper ${n%s})_LIST
2636 eval enable \$$v
2637 eval ${n}_if_any="\$$v"
2638 done
2639
2640 enable $ARCH_EXT_LIST
2641
2642 die_unknown(){
2643 echo "Unknown option \"$1\"."
2644 echo "See $0 --help for available options."
2645 exit 1
2646 }
2647
2648 print_3_columns() {
2649 printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2650 }
2651
2652 show_list() {
2653 suffix=_$1
2654 shift
2655 echo $* | sed s/$suffix//g | print_3_columns
2656 exit 0
2657 }
2658
2659 rand_list(){
2660 IFS=', '
2661 set -- $*
2662 unset IFS
2663 for thing; do
2664 comp=${thing%:*}
2665 prob=${thing#$comp}
2666 prob=${prob#:}
2667 is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2668 echo "prob ${prob:-0.5}"
2669 printf '%s\n' $comp
2670 done
2671 }
2672
2673 do_random(){
2674 action=$1
2675 shift
2676 random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2677 $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2678 }
2679
2680 for opt do
2681 optval="${opt#*=}"
2682 case "$opt" in
2683 --extra-ldflags=*)
2684 add_ldflags $optval
2685 ;;
2686 --extra-ldexeflags=*)
2687 add_ldexeflags $optval
2688 ;;
2689 --extra-libs=*)
2690 add_extralibs $optval
2691 ;;
2692 --disable-devices)
2693 disable $INDEV_LIST $OUTDEV_LIST
2694 ;;
2695 --enable-debug=*)
2696 debuglevel="$optval"
2697 ;;
2698 --disable-programs)
2699 disable $PROGRAM_LIST
2700 ;;
2701 --disable-everything)
2702 map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2703 ;;
2704 --disable-all)
2705 map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2706 disable $LIBRARY_LIST $PROGRAM_LIST doc
2707 ;;
2708 --enable-random|--disable-random)
2709 action=${opt%%-random}
2710 do_random ${action#--} $COMPONENT_LIST
2711 ;;
2712 --enable-random=*|--disable-random=*)
2713 action=${opt%%-random=*}
2714 do_random ${action#--} $optval
2715 ;;
2716 --enable-*=*|--disable-*=*)
2717 eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2718 is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2719 eval list=\$$(toupper $thing)_LIST
2720 name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2721 $action $(filter "$name" $list)
2722 ;;
2723 --enable-avserver|--disable-avserver*)
2724 warn "avserver has been removed, the ${opt} option is only"\
2725 "provided for compatibility and will be removed in the future"
2726 ;;
2727 --enable-?*|--disable-?*)
2728 eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2729 if is_in $option $COMPONENT_LIST; then
2730 test $action = disable && action=unset
2731 eval $action \$$(toupper ${option%s})_LIST
2732 elif is_in $option $CMDLINE_SELECT; then
2733 $action $option
2734 else
2735 die_unknown $opt
2736 fi
2737 ;;
2738 --list-*)
2739 NAME="${opt#--list-}"
2740 is_in $NAME $COMPONENT_LIST || die_unknown $opt
2741 NAME=${NAME%s}
2742 eval show_list $NAME \$$(toupper $NAME)_LIST
2743 ;;
2744 --help|-h) show_help
2745 ;;
2746 --quiet|-q) quiet=yes
2747 ;;
2748 *)
2749 optname="${opt%%=*}"
2750 optname="${optname#--}"
2751 optname=$(echo "$optname" | sed 's/-/_/g')
2752 if is_in $optname $CMDLINE_SET; then
2753 eval $optname='$optval'
2754 elif is_in $optname $CMDLINE_APPEND; then
2755 append $optname "$optval"
2756 else
2757 die_unknown $opt
2758 fi
2759 ;;
2760 esac
2761 done
2762
2763 for e in $env; do
2764 eval "export $e"
2765 done
2766
2767 disabled logging && logfile=/dev/null
2768
2769 # Die early if licensing-related configure options are incompatible.
2770 die_license_disabled() {
2771 enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2772 }
2773
2774 map "die_license_disabled gpl" $EXTERNAL_LIBRARY_GPL_LIST
2775 map "die_license_disabled nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2776 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2777
2778 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2779
2780 # Disable all the library-specific components if the library itself
2781 # is disabled, see AVCODEC_LIST and following _LIST variables.
2782
2783 disable_components(){
2784 disabled ${1} && disable $(
2785 eval components="\$$(toupper ${1})_COMPONENTS"
2786 map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2787 )
2788 }
2789
2790 map 'disable_components $v' $LIBRARY_LIST
2791
2792 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2793 set >> $logfile
2794
2795 case "$toolchain" in
2796 *-asan)
2797 cc_default="${toolchain%-asan}"
2798 add_cflags -fsanitize=address
2799 add_ldflags -fsanitize=address
2800 ;;
2801 *-msan)
2802 cc_default="${toolchain%-msan}"
2803 add_cflags -fsanitize=memory -fsanitize-memory-track-origins
2804 add_ldflags -fsanitize=memory
2805 ;;
2806 *-tsan)
2807 cc_default="${toolchain%-tsan}"
2808 add_cflags -fsanitize=thread -pie
2809 add_ldflags -fsanitize=thread -pie
2810 case "$toolchain" in
2811 gcc-tsan)
2812 add_cflags -fPIC
2813 add_ldflags -fPIC
2814 ;;
2815 esac
2816 ;;
2817 *-usan)
2818 cc_default="${toolchain%-usan}"
2819 add_cflags -fsanitize=undefined
2820 add_ldflags -fsanitize=undefined
2821 case "$toolchain" in
2822 clang-usan)
2823 add_cflags -O1
2824 ;;
2825 esac
2826 ;;
2827 valgrind-*)
2828 target_exec_default="valgrind"
2829 case "$toolchain" in
2830 valgrind-massif)
2831 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2832 ;;
2833 valgrind-memcheck)
2834 target_exec_args="--track-origins=yes --leak-check=full"
2835 ;;
2836 esac
2837 ;;
2838 msvc)
2839 # Check whether the current MSVC version needs the C99 converter.
2840 # From MSVC 2013 (compiler major version 18) onwards, it does actually
2841 # support enough of C99 to build libav. Default to the new
2842 # behaviour if the regexp was unable to match anything, since this
2843 # successfully parses the version number of existing supported
2844 # versions that require the converter (MSVC 2010 and 2012).
2845 cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2846 if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2847 cc_default="cl"
2848 else
2849 cc_default="c99wrap cl"
2850 fi
2851 ld_default="$source_path/compat/windows/mslink"
2852 nm_default="dumpbin -symbols"
2853 ar_default="lib"
2854 case "$arch" in
2855 arm*)
2856 as_default="armasm"
2857 ;;
2858 esac
2859 target_os_default="win32"
2860 # Use a relative path for TMPDIR. This makes sure all the
2861 # ffconf temp files are written with a relative path, avoiding
2862 # issues with msys/win32 path conversion for MSVC parameters
2863 # such as -Fo<file> or -out:<file>.
2864 TMPDIR=.
2865 ;;
2866 icl)
2867 cc_default="icl"
2868 ld_default="xilink"
2869 nm_default="dumpbin -symbols"
2870 ar_default="xilib"
2871 target_os_default="win32"
2872 TMPDIR=.
2873 ;;
2874 gcov)
2875 add_cflags -fprofile-arcs -ftest-coverage
2876 add_ldflags -fprofile-arcs -ftest-coverage
2877 ;;
2878 llvm-cov)
2879 add_cflags -fprofile-arcs -ftest-coverage
2880 add_ldflags --coverage
2881 ;;
2882 hardened)
2883 add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2884 add_cflags -fno-strict-overflow -fstack-protector-all
2885 add_ldflags -Wl,-z,relro -Wl,-z,now
2886 ;;
2887 ?*)
2888 die "Unknown toolchain $toolchain"
2889 ;;
2890 esac
2891
2892 test -n "$cross_prefix" && enable cross_compile
2893
2894 if enabled cross_compile; then
2895 test -n "$arch" && test -n "$target_os" ||
2896 die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
2897 fi
2898
2899 ar_default="${cross_prefix}${ar_default}"
2900 cc_default="${cross_prefix}${cc_default}"
2901 occ_default="${cross_prefix}${occ_default}"
2902 nm_default="${cross_prefix}${nm_default}"
2903 pkg_config_default="${cross_prefix}${pkg_config_default}"
2904 ranlib="${cross_prefix}${ranlib}"
2905 strip="${cross_prefix}${strip}"
2906
2907 sysinclude_default="${sysroot}/usr/include"
2908
2909 set_default arch cc pkg_config sysinclude target_exec target_os
2910 enabled cross_compile || host_cc_default=$cc
2911 set_default host_cc
2912
2913 if ! $pkg_config --version >/dev/null 2>&1; then
2914 warn "$pkg_config not found, library detection may fail."
2915 pkg_config=false
2916 fi
2917
2918 exesuf() {
2919 case $1 in
2920 mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2921 esac
2922 }
2923
2924 EXESUF=$(exesuf $target_os)
2925 HOSTEXESUF=$(exesuf $host_os)
2926
2927 # set temporary file name
2928 : ${TMPDIR:=$TEMPDIR}
2929 : ${TMPDIR:=$TMP}
2930 : ${TMPDIR:=/tmp}
2931
2932 if ! check_cmd mktemp -u XXXXXX; then
2933 # simple replacement for missing mktemp
2934 # NOT SAFE FOR GENERAL USE
2935 mktemp(){
2936 echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2937 }
2938 fi
2939
2940 tmpfile(){
2941 tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2942 (set -C; exec > $tmp) 2>/dev/null ||
2943 die "Unable to create temporary file in $TMPDIR."
2944 append TMPFILES $tmp
2945 eval $1=$tmp
2946 }
2947
2948 trap 'rm -f -- $TMPFILES' EXIT
2949
2950 tmpfile TMPASM .asm
2951 tmpfile TMPC .c
2952 tmpfile TMPE $EXESUF
2953 tmpfile TMPH .h
2954 tmpfile TMPO .o
2955 tmpfile TMPS .S
2956 tmpfile TMPSH .sh
2957 tmpfile TMPV .ver
2958
2959 unset -f mktemp
2960
2961 chmod +x $TMPE
2962
2963 # make sure we can execute files in $TMPDIR
2964 cat > $TMPSH 2>> $logfile <<EOF
2965 #! /bin/sh
2966 EOF
2967 chmod +x $TMPSH >> $logfile 2>&1
2968 if ! $TMPSH >> $logfile 2>&1; then
2969 cat <<EOF
2970 Unable to create and execute files in $TMPDIR. Set the TMPDIR environment
2971 variable to another directory and make sure that it is not mounted noexec.
2972 EOF
2973 die "Sanity test failed."
2974 fi
2975
2976 armasm_flags(){
2977 for flag; do
2978 case $flag in
2979 # Filter out MSVC cl.exe options from cflags that shouldn't
2980 # be passed to gas-preprocessor
2981 -M[TD]*) ;;
2982 *) echo $flag ;;
2983 esac
2984 done
2985 }
2986
2987 ccc_flags(){
2988 for flag; do
2989 case $flag in
2990 -std=c99) echo -c99 ;;
2991 -mcpu=*) echo -arch ${flag#*=} ;;
2992 -mieee) echo -ieee ;;
2993 -O*|-fast) echo $flag ;;
2994 -fno-math-errno) echo -assume nomath_errno ;;
2995 -g) echo -g3 ;;
2996 -Wall) echo -msg_enable level2 ;;
2997 -Wno-pointer-sign) echo -msg_disable ptrmismatch1 ;;
2998 -Wl,*) echo $flag ;;
2999 -f*|-W*) ;;
3000 *) echo $flag ;;
3001 esac
3002 done
3003 }
3004
3005 cparser_flags(){
3006 for flag; do
3007 case $flag in
3008 -Wno-switch) echo -Wno-switch-enum ;;
3009 -Wno-format-zero-length) ;;
3010 -Wdisabled-optimization) ;;
3011 -Wno-pointer-sign) echo -Wno-other ;;
3012 *) echo $flag ;;
3013 esac
3014 done
3015 }
3016
3017 msvc_common_flags(){
3018 for flag; do
3019 case $flag in
3020 # In addition to specifying certain flags under the compiler
3021 # specific filters, they must be specified here as well or else the
3022 # generic catch all at the bottom will print the original flag.
3023 -Wall) ;;
3024 -std=c99) ;;
3025 # Common flags
3026 -fomit-frame-pointer) ;;
3027 -g) echo -Z7 ;;
3028 -fno-math-errno) ;;
3029 -fno-common) ;;
3030 -fno-signed-zeros) ;;
3031 -fPIC) ;;
3032 -mthumb) ;;
3033 -march=*) ;;
3034 -lz) echo zlib.lib ;;
3035 -lavicap32) echo vfw32.lib user32.lib ;;
3036 -lx264) echo libx264.lib ;;
3037 -l*) echo ${flag#-l}.lib ;;
3038 -L*) echo -libpath:${flag#-L} ;;
3039 *) echo $flag ;;
3040 esac
3041 done
3042 }
3043
3044 msvc_flags(){
3045 msvc_common_flags "$@"
3046 for flag; do
3047 case $flag in
3048 -Wall) echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
3049 -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3050 -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3051 -wd4273 -wd4554 -wd4701 -wd4703 ;;
3052 esac
3053 done
3054 }
3055
3056 icl_flags(){
3057 msvc_common_flags "$@"
3058 for flag; do
3059 case $flag in
3060 # Despite what Intel's documentation says -Wall, which is supported
3061 # on Windows, does enable remarks so disable them here.
3062 -Wall) echo $flag -Qdiag-disable:remark ;;
3063 -std=c99) echo -Qstd=c99 ;;
3064 esac
3065 done
3066 }
3067
3068 pgi_flags(){
3069 for flag; do
3070 case $flag in
3071 -flto) echo -Mipa=fast,libopt,libinline,vestigial ;;
3072 -fomit-frame-pointer) echo -Mnoframe ;;
3073 -g) echo -gopt ;;
3074 *) echo $flag ;;
3075 esac
3076 done
3077 }
3078
3079 suncc_flags(){
3080 for flag; do
3081 case $flag in
3082 -march=*|-mcpu=*)
3083 case "${flag#*=}" in
3084 native) echo -xtarget=native ;;
3085 v9|niagara) echo -xarch=sparc ;;
3086 ultrasparc) echo -xarch=sparcvis ;;
3087 ultrasparc3|niagara2) echo -xarch=sparcvis2 ;;
3088 i586|pentium) echo -xchip=pentium ;;
3089 i686|pentiumpro|pentium2) echo -xtarget=pentium_pro ;;
3090 pentium3*|c3-2) echo -xtarget=pentium3 ;;
3091 pentium-m) echo -xarch=sse2 -xchip=pentium3 ;;
3092 pentium4*) echo -xtarget=pentium4 ;;
3093 prescott|nocona) echo -xarch=sse3 -xchip=pentium4 ;;
3094 *-sse3) echo -xarch=sse3 ;;
3095 core2) echo -xarch=ssse3 -xchip=core2 ;;
3096 corei7) echo -xarch=sse4_2 -xchip=nehalem ;;
3097 corei7-avx) echo -xarch=avx -xchip=sandybridge ;;
3098 amdfam10|barcelona|bdver*) echo -xarch=sse4_1 ;;
3099 athlon-4|athlon-[mx]p) echo -xarch=ssea ;;
3100 k8|opteron|athlon64|athlon-fx)
3101 echo -xarch=sse2a ;;
3102 athlon*) echo -xarch=pentium_proa ;;
3103 esac
3104 ;;
3105 -std=c99) echo -xc99 ;;
3106 -fomit-frame-pointer) echo -xregs=frameptr ;;
3107 -fPIC) echo -KPIC -xcode=pic32 ;;
3108 -W*,*) echo $flag ;;
3109 -f*-*|-W*|-mimpure-text) ;;
3110 -shared) echo -G ;;
3111 *) echo $flag ;;
3112 esac
3113 done
3114 }
3115
3116 tms470_flags(){
3117 for flag; do
3118 case $flag in
3119 -march=*|-mcpu=*)
3120 case "${flag#*=}" in
3121 armv7-a|cortex-a*) echo -mv=7a8 ;;
3122 armv7-r|cortex-r*) echo -mv=7r4 ;;
3123 armv7-m|cortex-m*) echo -mv=7m3 ;;
3124 armv6*|arm11*) echo -mv=6 ;;
3125 armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3126 echo -mv=5e ;;
3127 armv4*|arm7*|arm9[24]*) echo -mv=4 ;;
3128 esac
3129 ;;
3130 -mfpu=neon) echo --float_support=vfpv3 --neon ;;
3131 -mfpu=vfp) echo --float_support=vfpv2 ;;
3132 -mfpu=vfpv3) echo --float_support=vfpv3 ;;
3133 -mfpu=vfpv3-d16) echo --float_support=vfpv3d16 ;;
3134 -msoft-float) echo --float_support=vfplib ;;
3135 -O[0-3]|-mf=*) echo $flag ;;
3136 -g) echo -g -mn ;;
3137 -pds=*) echo $flag ;;
3138 -D*|-I*) echo $flag ;;
3139 --gcc|--abi=*) echo $flag ;;
3140 -me) echo $flag ;;
3141 esac
3142 done
3143 }
3144
3145 probe_cc(){
3146 pfx=$1
3147 _cc=$2
3148
3149 unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3150 unset _ld_o _ldflags _ld_lib _ld_path
3151 unset _depflags _DEPCMD _DEPFLAGS
3152 _flags_filter=echo
3153
3154 if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3155 _type=llvm_gcc
3156 gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3157 _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3158 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3159 _cflags_speed='-O3'
3160 _cflags_size='-Os'
3161 elif $_cc -v 2>&1 | grep -qi ^gcc; then
3162 _type=gcc
3163 gcc_version=$($_cc --version | head -n1)
3164 gcc_basever=$($_cc -dumpversion)
3165 gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3166 gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3167 _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3168 if ! $_cc -dumpversion | grep -q '^2\.'; then
3169 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3170 fi
3171 _cflags_speed='-O3'
3172 _cflags_size='-Os'
3173 elif $_cc --version 2>/dev/null | grep -q ^icc; then
3174 _type=icc
3175 _ident=$($_cc --version | head -n1)
3176 _depflags='-MMD'
3177 _cflags_speed='-O3'
3178 _cflags_size='-Os'
3179 _cflags_noopt='-O1'
3180 elif $_cc -v 2>&1 | grep -q xlc; then
3181 _type=xlc
3182 _ident=$($_cc -qversion 2>/dev/null | head -n1)
3183 _cflags_speed='-O5'
3184 _cflags_size='-O5 -qcompact'
3185 elif $_cc -V 2>/dev/null | grep -q Compaq; then
3186 _type=ccc
3187 _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3188 _DEPFLAGS='-M'
3189 _cflags_speed='-fast'
3190 _cflags_size='-O1'
3191 _flags_filter=ccc_flags
3192 elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3193 test -d "$sysroot" || die "No valid sysroot specified."
3194 _type=armcc
3195 _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3196 armcc_conf="$PWD/armcc.conf"
3197 $_cc --arm_linux_configure \
3198 --arm_linux_config_file="$armcc_conf" \
3199 --configure_sysroot="$sysroot" \
3200 --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3201 die "Error creating armcc configuration file."
3202 $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3203 _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3204 as_default="${cross_prefix}gcc"
3205 _depflags='-MMD'
3206 _cflags_speed='-O3'
3207 _cflags_size='-Os'
3208 elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3209 _type=tms470
3210 _ident=$($_cc -version | head -n1 | tr -s ' ')
3211 _flags='--gcc --abi=eabi -me'
3212 _cc_e='-ppl -fe=$@'
3213 _cc_o='-fe=$@'
3214 _depflags='-ppa -ppd=$(@:.o=.d)'
3215 _cflags_speed='-O3 -mf=5'
3216 _cflags_size='-O3 -mf=2'
3217 _flags_filter=tms470_flags
3218 elif $_cc -v 2>&1 | grep -q clang; then
3219 _type=clang
3220 _ident=$($_cc --version 2>/dev/null | head -n1)
3221 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3222 _cflags_speed='-O3'
3223 _cflags_size='-Os'
3224 elif $_cc -V 2>&1 | grep -q Sun; then
3225 _type=suncc
3226 _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3227 _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3228 _DEPFLAGS='-xM1 -xc99'
3229 _ldflags='-std=c99'
3230 _cflags_speed='-O5'
3231 _cflags_size='-O5 -xspace'
3232 _flags_filter=suncc_flags
3233 elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3234 _type=pathscale
3235 _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3236 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3237 _cflags_speed='-O2'
3238 _cflags_size='-Os'
3239 _flags_filter='filter_out -Wdisabled-optimization'
3240 elif $_cc -v 2>&1 | grep -q Open64; then
3241 _type=open64
3242 _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3243 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3244 _cflags_speed='-O2'
3245 _cflags_size='-Os'
3246 _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3247 elif $_cc -V 2>&1 | grep -q Portland; then
3248 _type=pgi
3249 _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3250 opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3251 _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3252 _cflags_size="-O2 -Munroll=c:1 $opt_common"
3253 _cflags_noopt="-O1"
3254 _flags_filter=pgi_flags
3255 elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3256 _type=armasm
3257 _ident=$($_cc | head -n1)
3258 # 4509: "This form of conditional instruction is deprecated"
3259 _flags="-nologo -ignore 4509"
3260 _flags_filter=armasm_flags
3261 elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3262 _type=msvc
3263 _ident=$($_cc 2>&1 | head -n1)
3264 _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3265 _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3266 _cflags_speed="-O2"
3267 _cflags_size="-O1"
3268 if $_cc -nologo- 2>&1 | grep -q Linker; then
3269 _ld_o='-out:$@'
3270 else
3271 _ld_o='-Fe$@'
3272 fi
3273 _cc_o='-Fo$@'
3274 _cc_e='-P -Fi$@'
3275 _flags_filter=msvc_flags
3276 _ld_lib='lib%.a'
3277 _ld_path='-libpath:'
3278 _flags='-nologo'
3279 elif $_cc 2>&1 | grep -q Intel; then
3280 _type=icl
3281 _ident=$($_cc 2>&1 | head -n1)
3282 _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3283 # Not only is O3 broken on 13.x+ but it is slower on all previous
3284 # versions (tested) as well.
3285 _cflags_speed="-O2"
3286 _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3287 if $_cc 2>&1 | grep -q Linker; then
3288 _ld_o='-out:$@'
3289 else
3290 _ld_o='-Fe$@'
3291 fi
3292 _cc_o='-Fo$@'
3293 _cc_e='-P'
3294 _flags_filter=icl_flags
3295 _ld_lib='lib%.a'
3296 _ld_path='-libpath:'
3297 # -Qdiag-error to make icl error when seeing certain unknown arguments
3298 _flags='-nologo -Qdiag-error:4044,10157'
3299 # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3300 # with MSVC which enables it by default.
3301 _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3302 elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3303 # lld can emulate multiple different linkers; in ms link.exe mode,
3304 # the -? parameter gives the help output which contains an identifyable
3305 # string, while it gives an error in other modes.
3306 _type=lld-link
3307 # The link.exe mode doesn't have a switch for getting the version,
3308 # but we can force it back to gnu mode and get the version from there.
3309 _ident=$($_cc -flavor gnu --version 2>/dev/null)
3310 _ld_o='-out:$@'
3311 _flags_filter=msvc_flags
3312 _ld_lib='lib%.a'
3313 _ld_path='-libpath:'
3314 elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3315 _type=cparser
3316 _ident=$($_cc --version | head -n1)
3317 _depflags='-MMD'
3318 _cflags_speed='-O4'
3319 _cflags_size='-O2'
3320 _flags_filter=cparser_flags
3321 fi
3322
3323 eval ${pfx}_type=\$_type
3324 eval ${pfx}_ident=\$_ident
3325 }
3326
3327 set_ccvars(){
3328 eval ${1}_C=\${_cc_c-\${${1}_C}}
3329 eval ${1}_E=\${_cc_e-\${${1}_E}}
3330 eval ${1}_O=\${_cc_o-\${${1}_O}}
3331
3332 if [ -n "$_depflags" ]; then
3333 eval ${1}_DEPFLAGS=\$_depflags
3334 else
3335 eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3336 eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3337 eval DEP${1}FLAGS=\$_flags
3338 fi
3339 }
3340
3341 probe_cc cc "$cc"
3342 cflags_filter=$_flags_filter
3343 cflags_speed=$_cflags_speed
3344 cflags_size=$_cflags_size
3345 cflags_noopt=$_cflags_noopt
3346 add_cflags $_flags $_cflags
3347 cc_ldflags=$_ldflags
3348 set_ccvars CC
3349
3350 probe_cc hostcc "$host_cc"
3351 host_cflags_filter=$_flags_filter
3352 add_host_cflags $_flags $_cflags
3353 set_ccvars HOSTCC
3354
3355 test -n "$cc_type" && enable $cc_type ||
3356 warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3357
3358 : ${as_default:=$cc}
3359 : ${objcc_default:=$cc}
3360 : ${dep_cc_default:=$cc}
3361 : ${ld_default:=$cc}
3362 : ${host_ld_default:=$host_cc}
3363 set_default ar as objcc dep_cc ld host_ld
3364
3365 probe_cc as "$as"
3366 asflags_filter=$_flags_filter
3367 add_asflags $_flags $_cflags
3368 set_ccvars AS
3369
3370 probe_cc objcc "$objcc"
3371 objcflags_filter=$_flags_filter
3372 add_objcflags $_flags $_cflags
3373 set_ccvars OBJC
3374
3375 probe_cc ld "$ld"
3376 ldflags_filter=$_flags_filter
3377 add_ldflags $_flags $_ldflags
3378 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3379 LD_O=${_ld_o-$LD_O}
3380 LD_LIB=${_ld_lib-$LD_LIB}
3381 LD_PATH=${_ld_path-$LD_PATH}
3382
3383 probe_cc hostld "$host_ld"
3384 host_ldflags_filter=$_flags_filter
3385 add_host_ldflags $_flags $_ldflags
3386 HOSTLD_O=${_ld_o-$HOSTLD_O}
3387
3388 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3389 probe_cc depcc "$dep_cc"
3390 CCDEP=${_DEPCMD:-$DEPCMD}
3391 CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3392 DEPCCFLAGS=$_flags
3393 fi
3394
3395 if $ar 2>&1 | grep -q Microsoft; then
3396 arflags="-nologo"
3397 ar_o='-out:$@'
3398 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3399 arflags="rq"
3400 ar_o='$@'
3401 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3402 arflags='-Xany -r -c'
3403 ar_o='$@'
3404 else
3405 arflags="rc"
3406 ar_o='$@'
3407 fi
3408
3409 add_cflags $extra_cflags
3410 add_objcflags $extra_objcflags
3411 add_asflags $extra_cflags
3412
3413 if test -n "$sysroot"; then
3414 case "$cc_type" in
3415 gcc|llvm_gcc|clang)
3416 add_cppflags --sysroot="$sysroot"
3417 add_ldflags --sysroot="$sysroot"
3418 ;;
3419 tms470)
3420 add_cppflags -I"$sysinclude"
3421 add_ldflags --sysroot="$sysroot"
3422 ;;
3423 esac
3424 fi
3425
3426 if test "$cpu" = host; then
3427 enabled cross_compile &&
3428 die "--cpu=host makes no sense when cross-compiling."
3429
3430 case "$cc_type" in
3431 gcc|llvm_gcc)
3432 check_native(){
3433 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3434 sed -n "/cc1.*$1=/{
3435 s/.*$1=\\([^ ]*\\).*/\\1/
3436 p
3437 q
3438 }" $TMPE
3439 }
3440 cpu=$(check_native -march || check_native -mcpu)
3441 ;;
3442 esac
3443
3444 test "${cpu:-host}" = host &&
3445 die "--cpu=host not supported with compiler $cc"
3446 fi
3447
3448 # Deal with common $arch aliases
3449 case "$arch" in
3450 aarch64|arm64)
3451 arch="aarch64"
3452 ;;
3453 arm*)
3454 arch="arm"
3455 ;;
3456 mips*|IP*)
3457 case "$arch" in
3458 *el)
3459 add_cppflags -EL
3460 add_ldflags -EL
3461 ;;
3462 *eb)
3463 add_cppflags -EB
3464 add_ldflags -EB
3465 ;;
3466 esac
3467 arch="mips"
3468 ;;
3469 parisc*|hppa*)
3470 arch="parisc"
3471 ;;
3472 "Power Macintosh"|ppc*|powerpc*)
3473 arch="ppc"
3474 ;;
3475 s390|s390x)
3476 arch="s390"
3477 ;;
3478 sh4|sh)
3479 arch="sh4"
3480 ;;
3481 sun4u|sparc*)
3482 arch="sparc"
3483 ;;
3484 tilegx|tile-gx)
3485 arch="tilegx"
3486 ;;
3487 i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3488 arch="x86"
3489 ;;
3490 esac
3491
3492 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3493 enable $arch
3494
3495 # Add processor-specific flags
3496 if enabled aarch64; then
3497
3498 case $cpu in
3499 armv*)
3500 cpuflags="-march=$cpu"
3501 ;;
3502 *)
3503 cpuflags="-mcpu=$cpu"
3504 ;;
3505 esac
3506
3507 elif enabled alpha; then
3508
3509 cpuflags="-mcpu=$cpu"
3510
3511 elif enabled arm; then
3512
3513 check_arm_arch() {
3514 check_cpp_condition stddef.h \
3515 "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3516 $cpuflags
3517 }
3518
3519 probe_arm_arch() {
3520 if check_arm_arch 4; then echo armv4
3521 elif check_arm_arch 4T; then echo armv4t
3522 elif check_arm_arch 5; then echo armv5
3523 elif check_arm_arch 5E; then echo armv5e
3524 elif check_arm_arch 5T; then echo armv5t
3525 elif check_arm_arch 5TE; then echo armv5te
3526 elif check_arm_arch 5TEJ; then echo armv5te
3527 elif check_arm_arch 6; then echo armv6
3528 elif check_arm_arch 6J; then echo armv6j
3529 elif check_arm_arch 6K; then echo armv6k
3530 elif check_arm_arch 6Z; then echo armv6z
3531 elif check_arm_arch 6ZK; then echo armv6zk
3532 elif check_arm_arch 6T2; then echo armv6t2
3533 elif check_arm_arch 7; then echo armv7
3534 elif check_arm_arch 7A 7_A; then echo armv7-a
3535 elif check_arm_arch 7S; then echo armv7-a
3536 elif check_arm_arch 7R 7_R; then echo armv7-r
3537 elif check_arm_arch 7M 7_M; then echo armv7-m
3538 elif check_arm_arch 7EM 7E_M; then echo armv7-m
3539 elif check_arm_arch 8A 8_A; then echo armv8-a
3540 fi
3541 }
3542
3543 [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3544
3545 case $cpu in
3546 armv*)
3547 cpuflags="-march=$cpu"
3548 subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3549 ;;
3550 *)
3551 cpuflags="-mcpu=$cpu"
3552 case $cpu in
3553 cortex-a*) subarch=armv7a ;;
3554 cortex-r*) subarch=armv7r ;;
3555 cortex-m*) enable thumb; subarch=armv7m ;;
3556 arm11*) subarch=armv6 ;;
3557 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3558 armv4*|arm7*|arm9[24]*) subarch=armv4 ;;
3559 *) subarch=$(probe_arm_arch) ;;
3560 esac
3561 ;;
3562 esac
3563
3564 case "$subarch" in
3565 armv5t*) enable fast_clz ;;
3566 armv[6-8]*) enable fast_clz fast_unaligned ;;
3567 esac
3568
3569 elif enabled avr32; then
3570
3571 case $cpu in
3572 ap7[02]0[0-2])
3573 subarch="avr32_ap"
3574 cpuflags="-mpart=$cpu"
3575 ;;
3576 ap)
3577 subarch="avr32_ap"
3578 cpuflags="-march=$cpu"
3579 ;;
3580 uc3[ab]*)
3581 subarch="avr32_uc"
3582 cpuflags="-mcpu=$cpu"
3583 ;;
3584 uc)
3585 subarch="avr32_uc"
3586 cpuflags="-march=$cpu"
3587 ;;
3588 esac
3589
3590 elif enabled bfin; then
3591
3592 cpuflags="-mcpu=$cpu"
3593
3594 elif enabled mips; then
3595
3596 cpuflags="-march=$cpu"
3597
3598 elif enabled ppc; then
3599
3600 disable ldbrx
3601
3602 case $(tolower $cpu) in
3603 601|ppc601|powerpc601)
3604 cpuflags="-mcpu=601"
3605 disable altivec
3606 ;;
3607 603*|ppc603*|powerpc603*)
3608 cpuflags="-mcpu=603"
3609 disable altivec
3610 ;;
3611 604*|ppc604*|powerpc604*)
3612 cpuflags="-mcpu=604"
3613 disable altivec
3614 ;;
3615 g3|75*|ppc75*|powerpc75*)
3616 cpuflags="-mcpu=750"
3617 disable altivec
3618 ;;
3619 g4|745*|ppc745*|powerpc745*)
3620 cpuflags="-mcpu=7450"
3621 disable vsx
3622 ;;
3623 74*|ppc74*|powerpc74*)
3624 cpuflags="-mcpu=7400"
3625 disable vsx
3626 ;;
3627 g5|970|ppc970|powerpc970)
3628 cpuflags="-mcpu=970"
3629 disable vsx
3630 ;;
3631 power[3-6]*)
3632 cpuflags="-mcpu=$cpu"
3633 disable vsx
3634 ;;
3635 power[7-8]*)
3636 cpuflags="-mcpu=$cpu"
3637 enable ldbrx
3638 ;;
3639 cell)
3640 cpuflags="-mcpu=cell"
3641 enable ldbrx
3642 disable vsx
3643 ;;
3644 e500mc)
3645 cpuflags="-mcpu=e500mc"
3646 disable altivec
3647 ;;
3648 e500v2)
3649 cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3650 disable altivec
3651 disable dcbzl
3652 ;;
3653 e500)
3654 cpuflags="-mcpu=8540 -mhard-float"
3655 disable altivec
3656 disable dcbzl
3657 ;;
3658 esac
3659
3660 elif enabled sparc; then
3661
3662 case $cpu in
3663 cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3664 cpuflags="-mcpu=$cpu"
3665 ;;
3666 ultrasparc*|niagara[234])
3667 cpuflags="-mcpu=$cpu"
3668 ;;
3669 esac
3670
3671 elif enabled x86; then
3672
3673 case $cpu in
3674 i[345]86|pentium)
3675 cpuflags="-march=$cpu"
3676 disable i686
3677 disable mmx
3678 ;;
3679 # targets that do NOT support nopl and conditional mov (cmov)
3680 pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3681 cpuflags="-march=$cpu"
3682 disable i686
3683 ;;
3684 # targets that do support nopl and conditional mov (cmov)
3685 i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3686 cpuflags="-march=$cpu"
3687 enable i686
3688 enable fast_cmov
3689 ;;
3690 # targets that do support conditional mov but on which it's slow
3691 pentium4|pentium4m|prescott|nocona)
3692 cpuflags="-march=$cpu"
3693 enable i686
3694 disable fast_cmov
3695 ;;
3696 esac
3697
3698 fi
3699
3700 if [ "$cpu" != generic ]; then
3701 add_cflags $cpuflags
3702 add_asflags $cpuflags
3703 test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3704 fi
3705
3706 # compiler sanity check
3707 check_exec <<EOF
3708 int main(void){ return 0; }
3709 EOF
3710 if test "$?" != 0; then
3711 echo "$cc is unable to create an executable file."
3712 if test -z "$cross_prefix" && ! enabled cross_compile ; then
3713 echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3714 echo "Only do this if you know what cross compiling means."
3715 fi
3716 die "C compiler test failed."
3717 fi
3718
3719 add_cppflags -D_ISOC99_SOURCE
3720
3721 # some compilers silently accept -std=c11, so we also need to check that the
3722 # version macro is defined properly
3723 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3724 add_cflags -std=c11
3725 else
3726 check_cflags -std=c99
3727 fi
3728
3729 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3730 #include <stdlib.h>
3731 EOF
3732 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3733 #include <stdlib.h>
3734 EOF
3735
3736 add_host_cppflags -D_ISOC99_SOURCE
3737 check_host_cflags -std=c99
3738 check_host_cflags -Wall
3739 check_host_cflags -O3
3740
3741 check_64bit(){
3742 arch32=$1
3743 arch64=$2
3744 expr=$3
3745 check_code cc "" "int test[2*($expr) - 1]" &&
3746 subarch=$arch64 || subarch=$arch32
3747 }
3748
3749 case "$arch" in
3750 aarch64|alpha|ia64)
3751 spic=$shared
3752 ;;
3753 mips)
3754 check_64bit mips mips64 '_MIPS_SIM > 1'
3755 spic=$shared
3756 ;;
3757 parisc)
3758 check_64bit parisc parisc64 'sizeof(void *) > 4'
3759 spic=$shared
3760 ;;
3761 ppc)
3762 check_64bit ppc ppc64 'sizeof(void *) > 4'
3763 spic=$shared
3764 ;;
3765 s390)
3766 check_64bit s390 s390x 'sizeof(void *) > 4'
3767 spic=$shared
3768 ;;
3769 sparc)
3770 check_64bit sparc sparc64 'sizeof(void *) > 4'
3771 spic=$shared
3772 ;;
3773 x86)
3774 check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3775 if test "$subarch" = "x86_64"; then
3776 spic=$shared
3777 fi
3778 ;;
3779 esac
3780
3781 enable $subarch
3782 enabled spic && enable_weak pic
3783
3784 # OS specific
3785 case $target_os in
3786 aix)
3787 SHFLAGS=-shared
3788 add_cppflags '-I\$(SRC_PATH)/compat/aix'
3789 enabled shared && add_ldflags -Wl,-brtl
3790 ;;
3791 android)
3792 disable symver
3793 enable section_data_rel_ro
3794 SLIB_INSTALL_NAME='$(SLIBNAME)'
3795 SLIB_INSTALL_LINKS=
3796 SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3797 ;;
3798 haiku)
3799 prefix_default="/boot/common"
3800 network_extralibs="-lnetwork"
3801 host_libs=
3802 ;;
3803 sunos)
3804 SHFLAGS='-shared -Wl,-h,$$(@F)'
3805 enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3806 network_extralibs="-lsocket -lnsl"
3807 # When using suncc to build, the Solaris linker will mark
3808 # an executable with each instruction set encountered by
3809 # the Solaris assembler. As our libraries contain their own
3810 # guards for processor-specific code, instead suppress
3811 # generation of the HWCAPS ELF section on Solaris x86 only.
3812 enabled_all suncc x86 &&
3813 echo "hwcap_1 = OVERRIDE;" > mapfile &&
3814 add_ldflags -Wl,-M,mapfile
3815 nm_default='nm -P -g'
3816 version_script='-M'
3817 VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3818 ;;
3819 netbsd)
3820 disable symver
3821 oss_indev_extralibs="-lossaudio"
3822 oss_outdev_extralibs="-lossaudio"
3823 ;;
3824 openbsd|bitrig)
3825 disable symver
3826 SHFLAGS='-shared'
3827 SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3828 SLIB_INSTALL_LINKS=
3829 oss_indev_extralibs="-lossaudio"
3830 oss_outdev_extralibs="-lossaudio"
3831 ;;
3832 dragonfly)
3833 disable symver
3834 ;;
3835 freebsd)
3836 ;;
3837 bsd/os)
3838 add_extralibs -lpoll -lgnugetopt
3839 ;;
3840 darwin)
3841 enabled ppc && add_asflags -force_cpusubtype_ALL
3842 SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3843 enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3844 add_ldflags -Wl,-dynamic,-search_paths_first
3845 SLIBSUF=".dylib"
3846 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3847 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3848 objformat="macho"
3849 enabled x86_64 && objformat="macho64"
3850 enabled_any pic shared ||
3851 { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3852 check_header dispatch/dispatch.h &&
3853 add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3854 ;;
3855 msys*)
3856 die "Native MSYS builds are discouraged, please use the MINGW environment."
3857 ;;
3858 mingw32*|mingw64*)
3859 if test $target_os = "mingw32ce"; then
3860 disable network
3861 else
3862 target_os=mingw32
3863 fi
3864 LIBTARGET=i386
3865 if enabled x86_64; then
3866 LIBTARGET="i386:x86-64"
3867 elif enabled arm; then
3868 LIBTARGET=arm-wince
3869 fi
3870 check_ldflags -Wl,--nxcompat
3871 check_ldflags -Wl,--dynamicbase
3872 shlibdir_default="$bindir_default"
3873 SLIBPREF=""
3874 SLIBSUF=".dll"
3875 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3876 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3877 SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3878 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3879 SLIB_INSTALL_LINKS=
3880 SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3881 SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3882 SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3883 objformat="win32"
3884 dlltool="${cross_prefix}dlltool"
3885 ranlib=:
3886 enable dos_paths
3887 ;;
3888 win32|win64)
3889 disable symver
3890 if enabled shared; then
3891 # Link to the import library instead of the normal static library
3892 # for shared libs.
3893 LD_LIB='%.lib'
3894 # Cannot build both shared and static libs with MSVC or icl.
3895 disable static
3896 fi
3897 shlibdir_default="$bindir_default"
3898 SLIBPREF=""
3899 SLIBSUF=".dll"
3900 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3901 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3902 SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3903 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3904 SLIB_INSTALL_LINKS=
3905 SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3906 SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3907 SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3908 objformat="win32"
3909 ranlib=:
3910 enable dos_paths
3911 ;;
3912 cygwin*)
3913 target_os=cygwin
3914 shlibdir_default="$bindir_default"
3915 SLIBPREF="cyg"
3916 SLIBSUF=".dll"
3917 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3918 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3919 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3920 SLIB_INSTALL_LINKS=
3921 SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3922 SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3923 objformat="win32"
3924 enable dos_paths
3925 ;;
3926 *-dos|freedos|opendos)
3927 network_extralibs="-lsocket"
3928 objformat="coff"
3929 enable dos_paths
3930 add_cppflags -U__STRICT_ANSI__
3931 ;;
3932 linux)
3933 enable dv1394
3934 enable section_data_rel_ro
3935 ;;
3936 irix*)
3937 target_os=irix
3938 ranlib="echo ignoring ranlib"
3939 ;;
3940 os/2*)
3941 ln_s="cp -f"
3942 objformat="aout"
3943 add_cppflags -D_GNU_SOURCE
3944 add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3945 SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3946 LIBSUF="_s.a"
3947 SLIBPREF=""
3948 SLIBSUF=".dll"
3949 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3950 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3951 SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3952 echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3953 echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3954 echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3955 emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3956 SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3957 emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3958 SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3959 enable dos_paths
3960 ;;
3961 gnu/kfreebsd)
3962 add_cppflags -D_BSD_SOURCE
3963 ;;
3964 gnu)
3965 ;;
3966 qnx)
3967 add_cppflags -D_QNX_SOURCE
3968 network_extralibs="-lsocket"
3969 ;;
3970 symbian)
3971 SLIBSUF=".dll"
3972 enable dos_paths
3973 add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3974 add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3975 add_ldflags -Wl,--target1-abs,--no-undefined \
3976 -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3977 -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3978 add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3979 -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3980 -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3981 ;;
3982 osf1)
3983 add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3984 ;;
3985 minix)
3986 ;;
3987 none)
3988 ;;
3989 *)
3990 die "Unknown OS '$target_os'."
3991 ;;
3992 esac
3993
3994 # determine libc flavour
3995
3996 probe_libc(){
3997 pfx=$1
3998 pfx_no_=${pfx%_}
3999 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4000 if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4001 eval ${pfx}libc_type=uclibc
4002 add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4003 elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4004 eval ${pfx}libc_type=glibc
4005 add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4006 # MinGW headers can be installed on Cygwin, so check for newlib first.
4007 elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4008 eval ${pfx}libc_type=newlib
4009 add_${pfx}cppflags -U__STRICT_ANSI__
4010 # MinGW64 is backwards compatible with MinGW32, so check for it first.
4011 elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4012 eval ${pfx}libc_type=mingw64
4013 add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4014 eval test \$${pfx_no_}cc_type = "gcc" &&
4015 add_${pfx}cppflags -D__printf__=__gnu_printf__
4016 elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION" ||
4017 check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4018 eval ${pfx}libc_type=mingw32
4019 check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4020 (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4021 die "ERROR: MinGW32 runtime version must be >= 3.15."
4022 add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4023 check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4024 add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4025 eval test \$${pfx_no_}cc_type = "gcc" &&
4026 add_${pfx}cppflags -D__printf__=__gnu_printf__
4027 elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4028 eval ${pfx}libc_type=msvcrt
4029 if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4030 if [ "$pfx" = host_ ]; then
4031 add_host_cppflags -Dsnprintf=_snprintf
4032 else
4033 add_compat strtod.o strtod=avpriv_strtod
4034 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf \
4035 _snprintf=avpriv_snprintf \
4036 vsnprintf=avpriv_vsnprintf
4037 fi
4038 fi
4039 add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4040 # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4041 # 0x601 by default unless something else is set by the user.
4042 # This can easily lead to us detecting functions only present
4043 # in such new versions and producing binaries requiring windows 7.0.
4044 # Therefore explicitly set the default to XP unless the user has
4045 # set something else on the command line.
4046 # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4047 # family. For these cases, configure is free to use any functions
4048 # found in the SDK headers by default. (Alternatively, we could force
4049 # _WIN32_WINNT to 0x0602 in that case.)
4050 check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4051 { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4052 #ifdef WINAPI_FAMILY
4053 #include <winapifamily.h>
4054 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4055 #error not desktop
4056 #endif
4057 #endif
4058 EOF
4059 if [ "$pfx" = "" ]; then
4060 check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4061 fi
4062 elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4063 eval ${pfx}libc_type=klibc
4064 elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4065 eval ${pfx}libc_type=bionic
4066 elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4067 eval ${pfx}libc_type=solaris
4068 add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4069 else
4070 eval ${pfx}libc_type=default
4071 add_${pfx}cppflags -D_DEFAULT_SOURCE
4072 fi
4073 }
4074
4075 probe_libc
4076 test -n "$libc_type" && enable libc_$libc_type
4077 probe_libc host_
4078 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4079
4080 case $libc_type in
4081 bionic)
4082 add_compat strtod.o strtod=avpriv_strtod
4083 ;;
4084 esac
4085
4086 # hacks for compiler/libc/os combinations
4087
4088 if enabled_all tms470 libc_glibc; then
4089 CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4090 add_cppflags -D__USER_LABEL_PREFIX__=
4091 add_cppflags -D__builtin_memset=memset
4092 add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4093 add_cflags -pds=48 # incompatible redefinition of macro
4094 fi
4095
4096 if enabled_all ccc libc_glibc; then
4097 add_ldflags -Wl,-z,now # calls to libots crash without this
4098 fi
4099
4100 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4101 add_cppflags '-I\$(SRC_PATH)/compat/float'
4102
4103 esc(){
4104 echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4105 }
4106
4107 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4108
4109 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4110
4111 set_default $PATHS_LIST
4112 set_default nm
4113
4114 # we need to build at least one lib type
4115 if ! enabled_any static shared; then
4116 cat <<EOF
4117 At least one library type must be built.
4118 Specify --enable-static to build the static libraries or --enable-shared to
4119 build the shared libraries as well. To only build the shared libraries specify
4120 --disable-static in addition to --enable-shared.
4121 EOF
4122 exit 1
4123 fi
4124
4125 disabled optimizations || check_cflags -fomit-frame-pointer
4126
4127 enable_weak_pic() {
4128 disabled pic && return
4129 enable pic
4130 add_cppflags -DPIC
4131 case "$target_os" in
4132 mingw*|cygwin*)
4133 ;;
4134 *)
4135 add_cflags -fPIC
4136 ;;
4137 esac
4138 add_asflags -fPIC
4139 }
4140
4141 enabled pic && enable_weak_pic
4142
4143 check_cc <<EOF || die "Symbol mangling check failed."
4144 int ff_extern;
4145 EOF
4146 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4147 extern_prefix=${sym%%ff_extern*}
4148
4149 check_cc <<EOF && enable_weak inline_asm
4150 void foo(void) { __asm__ volatile ("" ::); }
4151 EOF
4152
4153 _restrict=
4154 for restrict_keyword in restrict __restrict__ __restrict; do
4155 check_cc <<EOF && _restrict=$restrict_keyword && break
4156 void foo(char * $restrict_keyword p);
4157 EOF
4158 done
4159
4160 check_cc <<EOF && enable pragma_deprecated
4161 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4162 EOF
4163
4164 check_cc <<EOF && enable attribute_packed
4165 struct { int x; } __attribute__((packed)) x;
4166 EOF
4167
4168 check_cc <<EOF && enable attribute_may_alias
4169 union { int x; } __attribute__((may_alias)) x;
4170 EOF
4171
4172 check_cc <<EOF || die "endian test failed"
4173 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4174 EOF
4175 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4176
4177 check_gas() {
4178 log "check_gas using '$as' as AS"
4179 # :vararg is used on aarch64, arm and ppc altivec
4180 check_as <<EOF || return 1
4181 .macro m n, y:vararg=0
4182 \n: .int \y
4183 .endm
4184 m x
4185 EOF
4186 # .altmacro is only used in arm asm
4187 ! enabled arm || check_as <<EOF || return 1
4188 .altmacro
4189 EOF
4190 enable gnu_as
4191 return 0
4192 }
4193
4194 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4195 nogas=:
4196 enabled_any arm aarch64 && nogas=die
4197 enabled_all ppc altivec && nogas=warn
4198 as_noop=-v
4199
4200 case $as_type in
4201 arm*) gaspp_as_type=armasm; as_noop=-h ;;
4202 gcc) gaspp_as_type=gas ;;
4203 *) gaspp_as_type=$as_type ;;
4204 esac
4205
4206 [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4207
4208 check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4209 gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4210
4211 if ! check_gas ; then
4212 as=${gas:=$as}
4213 check_gas || \
4214 $nogas "GNU assembler not found, install/update gas-preprocessor"
4215 fi
4216
4217 check_as <<EOF && enable as_func
4218 .func test
4219 .endfunc
4220 EOF
4221 fi
4222
4223 check_inline_asm inline_asm_labels '"1:\n"'
4224
4225 if enabled aarch64; then
4226 enabled armv8 && check_insn armv8 'prfm pldl1strm, [x0]'
4227 # internal assembler in clang 3.3 does not support this instruction
4228 enabled neon && check_insn neon 'ext v0.8B, v0.8B, v1.8B, #1'
4229 enabled vfp && check_insn vfp 'fmadd d0, d0, d1, d2'
4230
4231 map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4232
4233 elif enabled alpha; then
4234
4235 check_cflags -mieee
4236
4237 elif enabled arm; then
4238
4239 enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4240 check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4241 enabled thumb && check_cflags -mthumb || check_cflags -marm
4242
4243 if check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4244 enable vfp_args
4245 elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4246 enable vfp_args
4247 elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4248 case "${cross_prefix:-$cc}" in
4249 *hardfloat*) enable vfp_args; fpabi=vfp ;;
4250 *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4251 __asm__ (".eabi_attribute 28, 1");
4252 int main(void) { return 0; }
4253 EOF
4254 esac
4255 warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4256 fi
4257
4258 enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4259 enabled armv6 && check_insn armv6 'sadd16 r0, r0, r0'
4260 enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4261 enabled neon && check_insn neon 'vadd.i16 q0, q0, q0'
4262 enabled vfp && check_insn vfp 'fadds s0, s0, s0'
4263 enabled vfpv3 && check_insn vfpv3 'vmov.f32 s0, #1.0'
4264
4265 [ $target_os = linux ] || [ $target_os = android ] ||
4266 map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4267 $ARCH_EXT_LIST_ARM
4268
4269 check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4270
4271 check_as <<EOF && enable as_dn_directive
4272 ra .dn d0.i16
4273 .unreq ra
4274 EOF
4275 check_as <<EOF && enable as_fpu_directive
4276 .fpu neon
4277 EOF
4278
4279 # llvm's integrated assembler supports .object_arch from llvm 3.5
4280 [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4281 .object_arch armv4
4282 EOF
4283
4284 [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4285
4286 elif enabled mips; then
4287
4288 check_inline_asm loongson '"dmult.g $1, $2, $3"'
4289
4290 # make sure that only an instruction set is enabled
4291 disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4292
4293 if enabled mips64; then
4294 check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4295 check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4296 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4297 else
4298 check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4299 check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4300 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4301 fi
4302
4303 elif enabled parisc; then
4304
4305 if enabled gcc; then
4306 case $($cc -dumpversion) in
4307 4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4308 esac
4309 fi
4310
4311 elif enabled ppc; then
4312
4313 enable local_aligned_8 local_aligned_16 local_aligned_32
4314
4315 check_inline_asm dcbzl '"dcbzl 0, %0" :: "r"(0)'
4316 check_inline_asm ibm_asm '"add 0, 0, 0"'
4317 check_inline_asm ppc4xx '"maclhw r10, r11, r12"'
4318 check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4319
4320 # AltiVec flags: The FSF version of GCC differs from the Apple version
4321 if enabled altivec; then
4322 check_cflags -maltivec -mabi=altivec &&
4323 { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4324 check_cflags -faltivec
4325
4326 # check if our compiler supports Motorola AltiVec C API
4327 check_cc <<EOF || disable altivec
4328 $inc_altivec_h
4329 int main(void) {
4330 vector signed int v1 = (vector signed int) { 0 };
4331 vector signed int v2 = (vector signed int) { 1 };
4332 v1 = vec_add(v1, v2);
4333 return 0;
4334 }
4335 EOF
4336
4337 enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4338 fi
4339
4340 if enabled vsx; then
4341 check_cflags -mvsx &&
4342 check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4343 fi
4344
4345 if enabled power8; then
4346 check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4347 fi
4348
4349 elif enabled x86; then
4350
4351 check_builtin rdtsc intrin.h "__rdtsc()"
4352 check_builtin mm_empty mmintrin.h "_mm_empty()"
4353
4354 enable local_aligned_8 local_aligned_16 local_aligned_32
4355
4356 # check whether EBP is available on x86
4357 # As 'i' is stored on the stack, this program will crash
4358 # if the base pointer is used to access it because the
4359 # base pointer is cleared in the inline assembly code.
4360 check_exec_crash <<EOF && enable ebp_available
4361 volatile int i=0;
4362 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4363 return i;
4364 EOF
4365
4366 # check whether EBX is available on x86
4367 check_inline_asm ebx_available '""::"b"(0)' &&
4368 check_inline_asm ebx_available '"":::"%ebx"'
4369
4370 # check whether xmm clobbers are supported
4371 check_inline_asm xmm_clobbers '"":::"%xmm0"'
4372
4373 # check whether binutils is new enough to compile SSSE3/MMXEXT
4374 enabled ssse3 && check_inline_asm ssse3_inline '"pabsw %xmm0, %xmm0"'
4375 enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4376