configure: Move license checks directly after command line parsing
[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) echo $v ;; esac"
433 done
434 }
435
436 filter_out(){
437 pat=$1
438 shift
439 for v; do
440 eval "case $v in $pat) ;; *) echo $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 libdc1394_1
1675 libdc1394_2
1676 MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1677 sdl
1678 section_data_rel_ro
1679 threads
1680 vaapi_drm
1681 vaapi_x11
1682 vdpau_x11
1683 xlib
1684 "
1685
1686 # options emitted with CONFIG_ prefix but not available on the command line
1687 CONFIG_EXTRA="
1688 aandcttables
1689 ac3dsp
1690 audio_frame_queue
1691 audiodsp
1692 blockdsp
1693 bswapdsp
1694 cabac
1695 dirac_parse
1696 dvprofile
1697 faandct
1698 faanidct
1699 fdctdsp
1700 flacdsp
1701 fmtconvert
1702 g722dsp
1703 gcrypt
1704 gmp
1705 golomb
1706 gplv3
1707 h263dsp
1708 h264chroma
1709 h264dsp
1710 h264parse
1711 h264pred
1712 h264qpel
1713 hpeldsp
1714 huffman
1715 huffyuvdsp
1716 huffyuvencdsp
1717 idctdsp
1718 iirfilter
1719 imdct15
1720 intrax8
1721 iso_media
1722 ividsp
1723 jpegtables
1724 libx262
1725 lgplv3
1726 lpc
1727 lzf
1728 me_cmp
1729 mpeg_er
1730 mpegaudio
1731 mpegaudiodsp
1732 mpegvideo
1733 mpegvideoenc
1734 mss34dsp
1735 pixblockdsp
1736 qpeldsp
1737 qsv
1738 qsvdec
1739 qsvenc
1740 rangecoder
1741 riffdec
1742 riffenc
1743 rtpdec
1744 rtpenc_chain
1745 rv34dsp
1746 sinewin
1747 snappy
1748 srtp
1749 startcode
1750 texturedsp
1751 texturedspenc
1752 tpeldsp
1753 vaapi_encode
1754 vc1dsp
1755 videodsp
1756 vp3dsp
1757 vp56dsp
1758 vp8dsp
1759 wma_freqs
1760 wmv2dsp
1761 "
1762
1763 CMDLINE_SELECT="
1764 $ARCH_EXT_LIST
1765 $CONFIG_LIST
1766 $HAVE_LIST_CMDLINE
1767 $THREADS_LIST
1768 asm
1769 cross_compile
1770 debug
1771 extra_warnings
1772 logging
1773 lto
1774 optimizations
1775 rpath
1776 "
1777
1778 PATHS_LIST="
1779 bindir
1780 datadir
1781 docdir
1782 incdir
1783 libdir
1784 mandir
1785 prefix
1786 shlibdir
1787 "
1788
1789 CMDLINE_SET="
1790 $PATHS_LIST
1791 ar
1792 arch
1793 as
1794 build_suffix
1795 cc
1796 objcc
1797 cpu
1798 cross_prefix
1799 custom_allocator
1800 dep_cc
1801 env
1802 extra_version
1803 host_cc
1804 host_cflags
1805 host_ld
1806 host_ldflags
1807 host_libs
1808 host_os
1809 ld
1810 logfile
1811 malloc_prefix
1812 nm
1813 optflags
1814 pkg_config
1815 pkg_config_flags
1816 random_seed
1817 samples
1818 sysinclude
1819 sysroot
1820 target_exec
1821 target_os
1822 target_path
1823 target_samples
1824 toolchain
1825 "
1826
1827 CMDLINE_APPEND="
1828 extra_cflags
1829 extra_objcflags
1830 host_cppflags
1831 "
1832
1833 # code dependency declarations
1834
1835 # architecture extensions
1836
1837 armv5te_deps="arm"
1838 armv6_deps="arm"
1839 armv6t2_deps="arm"
1840 armv8_deps="aarch64"
1841 neon_deps_any="aarch64 arm"
1842 intrinsics_neon_deps="neon"
1843 vfp_deps_any="aarch64 arm"
1844 vfpv3_deps="vfp"
1845
1846 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1847
1848 altivec_deps="ppc"
1849 ppc4xx_deps="ppc"
1850 vsx_deps="altivec"
1851 power8_deps="vsx"
1852
1853 cpunop_deps="i686"
1854 x86_64_select="i686"
1855 x86_64_suggest="fast_cmov"
1856
1857 amd3dnow_deps="mmx"
1858 amd3dnowext_deps="amd3dnow"
1859 i686_deps="x86"
1860 mmx_deps="x86"
1861 mmxext_deps="mmx"
1862 sse_deps="mmxext"
1863 sse2_deps="sse"
1864 sse3_deps="sse2"
1865 ssse3_deps="sse3"
1866 sse4_deps="ssse3"
1867 sse42_deps="sse4"
1868 avx_deps="sse42"
1869 xop_deps="avx"
1870 fma3_deps="avx"
1871 fma4_deps="avx"
1872 avx2_deps="avx"
1873
1874 mmx_external_deps="yasm"
1875 mmx_inline_deps="inline_asm"
1876 mmx_suggest="mmx_external mmx_inline"
1877
1878 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1879 eval dep=\$${ext}_deps
1880 eval ${ext}_external_deps='"${dep}_external"'
1881 eval ${ext}_inline_deps='"${dep}_inline"'
1882 eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1883 done
1884
1885 aligned_stack_if_any="aarch64 ppc x86"
1886 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1887 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1888 fast_unaligned_if_any="aarch64 ppc x86"
1889 simd_align_16_if_any="altivec neon sse"
1890 simd_align_32_if_any="avx"
1891
1892 # system capabilities
1893 symver_if_any="symver_asm_label symver_gnu_asm"
1894 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1895
1896 # threading support
1897 atomics_gcc_if="sync_val_compare_and_swap"
1898 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1899 atomics_win32_if="MemoryBarrier"
1900 atomics_native_if_any="$ATOMICS_LIST"
1901 w32threads_deps="atomics_native"
1902 threads_if_any="$THREADS_LIST"
1903
1904 # subsystems
1905 dct_select="rdft"
1906 dirac_parse_select="golomb"
1907 error_resilience_select="me_cmp"
1908 faandct_deps="faan fdctdsp"
1909 faanidct_deps="faan idctdsp"
1910 h264dsp_select="startcode"
1911 intrax8_select="blockdsp idctdsp"
1912 mdct_select="fft"
1913 rdft_select="fft"
1914 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1915 mpeg_er_select="error_resilience"
1916 mpegaudio_select="mpegaudiodsp"
1917 mpegaudiodsp_select="dct"
1918 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1919 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1920 vc1dsp_select="h264chroma qpeldsp startcode"
1921
1922 # decoders / encoders
1923 aac_decoder_select="imdct15 mdct sinewin"
1924 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1925 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1926 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1927 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1928 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1929 adpcm_g722_decoder_select="g722dsp"
1930 adpcm_g722_encoder_select="g722dsp"
1931 aic_decoder_select="golomb idctdsp"
1932 alac_encoder_select="lpc"
1933 als_decoder_select="bswapdsp"
1934 amrnb_decoder_select="lsp"
1935 amrwb_decoder_select="lsp"
1936 amv_decoder_select="sp5x_decoder"
1937 ape_decoder_select="bswapdsp"
1938 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1939 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1940 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1941 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1942 atrac1_decoder_select="mdct sinewin"
1943 atrac3_decoder_select="mdct"
1944 atrac3p_decoder_select="mdct sinewin"
1945 bink_decoder_select="blockdsp hpeldsp"
1946 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1947 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1948 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1949 cllc_decoder_select="bswapdsp"
1950 comfortnoise_encoder_select="lpc"
1951 cook_decoder_select="audiodsp mdct sinewin"
1952 cscd_decoder_select="lzo"
1953 cscd_decoder_suggest="zlib"
1954 dca_decoder_select="fmtconvert mdct"
1955 dds_decoder_select="texturedsp"
1956 dnxhd_decoder_select="blockdsp idctdsp"
1957 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1958 dvvideo_decoder_select="dvprofile idctdsp"
1959 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1960 dxa_decoder_deps="zlib"
1961 dxv_decoder_select="lzf texturedsp"
1962 eac3_decoder_select="ac3_decoder"
1963 eac3_encoder_select="ac3_encoder"
1964 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1965 eatgq_decoder_select="aandcttables idctdsp"
1966 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1967 exr_decoder_deps="zlib"
1968 ffv1_decoder_select="golomb rangecoder"
1969 ffv1_encoder_select="rangecoder"
1970 ffvhuff_decoder_select="huffyuv_decoder"
1971 ffvhuff_encoder_select="huffyuv_encoder"
1972 fic_decoder_select="golomb"
1973 flac_decoder_select="flacdsp golomb"
1974 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1975 flashsv_decoder_deps="zlib"
1976 flashsv_encoder_deps="zlib"
1977 flashsv2_decoder_deps="zlib"
1978 flv_decoder_select="h263_decoder"
1979 flv_encoder_select="h263_encoder"
1980 fourxm_decoder_select="blockdsp bswapdsp"
1981 fraps_decoder_select="bswapdsp huffman"
1982 g2m_decoder_deps="zlib"
1983 g2m_decoder_select="blockdsp idctdsp jpegtables"
1984 h261_decoder_select="mpeg_er mpegvideo"
1985 h261_encoder_select="aandcttables mpegvideoenc"
1986 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1987 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1988 h263i_decoder_select="h263_decoder"
1989 h263p_encoder_select="h263_encoder"
1990 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1991 h264_decoder_suggest="error_resilience"
1992 hap_decoder_select="snappy texturedsp"
1993 hap_encoder_deps="libsnappy"
1994 hap_encoder_select="texturedspenc"
1995 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1996 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1997 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1998 iac_decoder_select="imc_decoder"
1999 imc_decoder_select="bswapdsp fft mdct sinewin"
2000 indeo3_decoder_select="hpeldsp"
2001 indeo4_decoder_select="ividsp"
2002 indeo5_decoder_select="ividsp"
2003 interplay_video_decoder_select="hpeldsp"
2004 jpegls_decoder_select="golomb mjpeg_decoder"
2005 jpegls_encoder_select="golomb"
2006 jv_decoder_select="blockdsp"
2007 lagarith_decoder_select="huffyuvdsp"
2008 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2009 loco_decoder_select="golomb"
2010 magicyuv_decoder_select="huffyuvdsp"
2011 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2012 metasound_decoder_select="lsp mdct sinewin"
2013 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2014 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2015 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2016 mjpegb_decoder_select="mjpeg_decoder"
2017 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2018 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2019 mlp_decoder_select="mlp_parser"
2020 motionpixels_decoder_select="bswapdsp"
2021 mp1_decoder_select="mpegaudio"
2022 mp1float_decoder_select="mpegaudio"
2023 mp2_decoder_select="mpegaudio"
2024 mp2float_decoder_select="mpegaudio"
2025 mp3_decoder_select="mpegaudio"
2026 mp3adu_decoder_select="mpegaudio"
2027 mp3adufloat_decoder_select="mpegaudio"
2028 mp3float_decoder_select="mpegaudio"
2029 mp3on4_decoder_select="mpegaudio"
2030 mp3on4float_decoder_select="mpegaudio"
2031 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2032 mpc8_decoder_select="mpegaudiodsp"
2033 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2034 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2035 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2036 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2037 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2038 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2039 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2040 mpeg4_encoder_select="h263_encoder"
2041 msa1_decoder_select="mss34dsp"
2042 msmpeg4v1_decoder_select="h263_decoder"
2043 msmpeg4v2_decoder_select="h263_decoder"
2044 msmpeg4v2_encoder_select="h263_encoder"
2045 msmpeg4v3_decoder_select="h263_decoder"
2046 msmpeg4v3_encoder_select="h263_encoder"
2047 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2048 mts2_decoder_select="mss34dsp"
2049 mxpeg_decoder_select="mjpeg_decoder"
2050 nellymoser_decoder_select="mdct sinewin"
2051 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2052 nuv_decoder_select="idctdsp lzo"
2053 on2avc_decoder_select="mdct"
2054 opus_decoder_deps="avresample"
2055 opus_decoder_select="imdct15"
2056 png_decoder_deps="zlib"
2057 png_encoder_deps="zlib"
2058 png_encoder_select="huffyuvencdsp"
2059 prores_decoder_select="idctdsp"
2060 prores_encoder_select="fdctdsp"
2061 qcelp_decoder_select="lsp"
2062 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2063 ra_144_encoder_select="audio_frame_queue lpc"
2064 ralf_decoder_select="golomb"
2065 rscc_decoder_deps="zlib"
2066 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2067 rv10_encoder_select="h263_encoder"
2068 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2069 rv20_encoder_select="h263_encoder"
2070 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2071 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2072 screenpresso_decoder_deps="zlib"
2073 shorten_decoder_select="golomb"
2074 sipr_decoder_select="lsp"
2075 sp5x_decoder_select="mjpeg_decoder"
2076 svq1_decoder_select="hpeldsp"
2077 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2078 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2079 svq3_decoder_suggest="zlib"
2080 tak_decoder_select="audiodsp"
2081 tdsc_decoder_deps="zlib"
2082 tdsc_decoder_select="mjpeg_decoder"
2083 theora_decoder_select="vp3_decoder"
2084 thp_decoder_select="mjpeg_decoder"
2085 tiff_decoder_suggest="zlib"
2086 tiff_encoder_suggest="zlib"
2087 truehd_decoder_select="mlp_decoder"
2088 truemotion2_decoder_select="bswapdsp"
2089 truespeech_decoder_select="bswapdsp"
2090 tscc_decoder_deps="zlib"
2091 txd_decoder_select="texturedsp"
2092 twinvq_decoder_select="mdct lsp sinewin"
2093 utvideo_decoder_select="bswapdsp"
2094 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2095 vble_decoder_select="huffyuvdsp"
2096 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2097 vc1image_decoder_select="vc1_decoder"
2098 vorbis_decoder_select="mdct"
2099 vorbis_encoder_select="mdct"
2100 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2101 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2102 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2103 vp6a_decoder_select="vp6_decoder"
2104 vp6f_decoder_select="vp6_decoder"
2105 vp7_decoder_select="h264pred videodsp vp8dsp"
2106 vp8_decoder_select="h264pred videodsp vp8dsp"
2107 vp9_decoder_select="videodsp"
2108 webp_decoder_select="vp8_decoder"
2109 wmapro_decoder_select="mdct sinewin wma_freqs"
2110 wmav1_decoder_select="mdct sinewin wma_freqs"
2111 wmav1_encoder_select="mdct sinewin wma_freqs"
2112 wmav2_decoder_select="mdct sinewin wma_freqs"
2113 wmav2_encoder_select="mdct sinewin wma_freqs"
2114 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2115 wmv1_decoder_select="h263_decoder"
2116 wmv1_encoder_select="h263_encoder"
2117 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2118 wmv2_encoder_select="h263_encoder wmv2dsp"
2119 wmv3_decoder_select="vc1_decoder"
2120 wmv3image_decoder_select="wmv3_decoder"
2121 zerocodec_decoder_deps="zlib"
2122 zlib_decoder_deps="zlib"
2123 zlib_encoder_deps="zlib"
2124 zmbv_decoder_deps="zlib"
2125 zmbv_encoder_deps="zlib"
2126
2127 # hardware accelerators
2128 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2129 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2130 vaapi_deps="va_va_h"
2131 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2132 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2133 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2134
2135 h263_vaapi_hwaccel_deps="vaapi"
2136 h263_vaapi_hwaccel_select="h263_decoder"
2137 h264_d3d11va_hwaccel_deps="d3d11va"
2138 h264_d3d11va_hwaccel_select="h264_decoder"
2139 h264_dxva2_hwaccel_deps="dxva2"
2140 h264_dxva2_hwaccel_select="h264_decoder"
2141 h264_mmal_decoder_deps="mmal"
2142 h264_mmal_decoder_select="mmal"
2143 h264_mmal_hwaccel_deps="mmal"
2144 h264_omx_encoder_deps="omx"
2145 h264_qsv_hwaccel_deps="libmfx"
2146 h264_vaapi_hwaccel_deps="vaapi"
2147 h264_vaapi_hwaccel_select="h264_decoder"
2148 h264_vda_hwaccel_deps="vda"
2149 h264_vda_hwaccel_select="h264_decoder"
2150 h264_vda_old_hwaccel_deps="vda"
2151 h264_vda_old_hwaccel_select="h264_decoder"
2152 h264_vdpau_hwaccel_deps="vdpau"
2153 h264_vdpau_hwaccel_select="h264_decoder"
2154 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2155 hevc_d3d11va_hwaccel_select="hevc_decoder"
2156 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2157 hevc_dxva2_hwaccel_select="hevc_decoder"
2158 hevc_qsv_hwaccel_deps="libmfx"
2159 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2160 hevc_vdpau_hwaccel_select="hevc_decoder"
2161 mpeg1_vdpau_hwaccel_deps="vdpau"
2162 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2163 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2164 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2165 mpeg2_dxva2_hwaccel_deps="dxva2"
2166 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2167 mpeg2_mmal_decoder_deps="mmal"
2168 mpeg2_mmal_decoder_select="mmal"
2169 mpeg2_mmal_hwaccel_deps="mmal"
2170 mpeg2_qsv_hwaccel_deps="libmfx"
2171 mpeg2_vaapi_hwaccel_deps="vaapi"
2172 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2173 mpeg2_vdpau_hwaccel_deps="vdpau"
2174 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2175 mpeg4_omx_encoder_deps="omx"
2176 mpeg4_vaapi_hwaccel_deps="vaapi"
2177 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2178 mpeg4_vdpau_hwaccel_deps="vdpau"
2179 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2180 vc1_d3d11va_hwaccel_deps="d3d11va"
2181 vc1_d3d11va_hwaccel_select="vc1_decoder"
2182 vc1_dxva2_hwaccel_deps="dxva2"
2183 vc1_dxva2_hwaccel_select="vc1_decoder"
2184 vc1_mmal_decoder_deps="mmal"
2185 vc1_mmal_decoder_select="mmal"
2186 vc1_mmal_hwaccel_deps="mmal"
2187 vc1_vaapi_hwaccel_deps="vaapi"
2188 vc1_vaapi_hwaccel_select="vc1_decoder"
2189 vc1_vdpau_hwaccel_deps="vdpau"
2190 vc1_vdpau_hwaccel_select="vc1_decoder"
2191 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2192 vp8_vaapi_hwaccel_select="vp8_decoder"
2193 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2194 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2195 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2196 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2197
2198 # hardware-accelerated codecs
2199 nvenc_deps_any="dlopen LoadLibrary"
2200 nvenc_extralibs='$ldl'
2201 omx_deps="dlopen pthreads"
2202 omx_extralibs='$ldl'
2203 qsvdec_select="qsv"
2204 qsvenc_select="qsv"
2205 vaapi_encode_deps="vaapi"
2206
2207 hwupload_cuda_filter_deps="cuda"
2208 scale_npp_filter_deps="cuda libnpp"
2209
2210 h264_nvenc_encoder_deps="nvenc"
2211 h264_qsv_decoder_deps="libmfx"
2212 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2213 h264_qsv_encoder_deps="libmfx"
2214 h264_qsv_encoder_select="qsvenc"
2215 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2216 h264_vaapi_encoder_select="vaapi_encode golomb"
2217
2218 hevc_nvenc_encoder_deps="nvenc"
2219 hevc_qsv_decoder_deps="libmfx"
2220 hevc_qsv_encoder_deps="libmfx"
2221 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2222 hevc_qsv_encoder_select="qsvenc"
2223 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2224 hevc_vaapi_encoder_select="vaapi_encode golomb"
2225 mpeg2_qsv_decoder_deps="libmfx"
2226 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2227 mpeg2_qsv_encoder_deps="libmfx"
2228 mpeg2_qsv_encoder_select="qsvenc"
2229
2230 nvenc_h264_encoder_deps="nvenc"
2231 nvenc_hevc_encoder_deps="nvenc"
2232
2233 # parsers
2234 h264_parser_select="golomb h264dsp h264parse"
2235 hevc_parser_select="golomb"
2236 mpegvideo_parser_select="mpegvideo"
2237 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2238 vc1_parser_select="vc1dsp"
2239
2240 # bitstream_filters
2241 mjpeg2jpeg_bsf_select="jpegtables"
2242
2243 # external libraries
2244 libdcadec_decoder_deps="libdcadec"
2245 libfaac_encoder_deps="libfaac"
2246 libfaac_encoder_select="audio_frame_queue"
2247 libfdk_aac_decoder_deps="libfdk_aac"
2248 libfdk_aac_encoder_deps="libfdk_aac"
2249 libfdk_aac_encoder_select="audio_frame_queue"
2250 libgsm_decoder_deps="libgsm"
2251 libgsm_encoder_deps="libgsm"
2252 libgsm_ms_decoder_deps="libgsm"
2253 libgsm_ms_encoder_deps="libgsm"
2254 libilbc_decoder_deps="libilbc"
2255 libilbc_encoder_deps="libilbc"
2256 libkvazaar_encoder_deps="libkvazaar"
2257 libmp3lame_encoder_deps="libmp3lame"
2258 libmp3lame_encoder_select="audio_frame_queue"
2259 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2260 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2261 libopencore_amrnb_encoder_select="audio_frame_queue"
2262 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2263 libopenh264_decoder_deps="libopenh264"
2264 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2265 libopenh264_encoder_deps="libopenh264"
2266 libopenjpeg_decoder_deps="libopenjpeg"
2267 libopenjpeg_encoder_deps="libopenjpeg"
2268 libopus_decoder_deps="libopus"
2269 libopus_encoder_deps="libopus"
2270 libopus_encoder_select="audio_frame_queue"
2271 libschroedinger_decoder_deps="libschroedinger"
2272 libschroedinger_encoder_deps="libschroedinger"
2273 libspeex_decoder_deps="libspeex"
2274 libspeex_encoder_deps="libspeex"
2275 libspeex_encoder_select="audio_frame_queue"
2276 libtheora_encoder_deps="libtheora"
2277 libtwolame_encoder_deps="libtwolame"
2278 libvo_aacenc_encoder_deps="libvo_aacenc"
2279 libvo_aacenc_encoder_select="audio_frame_queue"
2280 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2281 libvorbis_encoder_deps="libvorbis"
2282 libvorbis_encoder_select="audio_frame_queue"
2283 libvpx_vp8_decoder_deps="libvpx"
2284 libvpx_vp8_encoder_deps="libvpx"
2285 libvpx_vp9_decoder_deps="libvpx"
2286 libvpx_vp9_encoder_deps="libvpx"
2287 libwavpack_encoder_deps="libwavpack"
2288 libwebp_encoder_deps="libwebp"
2289 libx262_encoder_deps="libx262"
2290 libx264_encoder_deps="libx264"
2291 libx265_encoder_deps="libx265"
2292 libxavs_encoder_deps="libxavs"
2293 libxvid_encoder_deps="libxvid"
2294
2295 # demuxers / muxers
2296 ac3_demuxer_select="ac3_parser"
2297 asf_demuxer_select="riffdec"
2298 asf_muxer_select="riffenc"
2299 asf_stream_muxer_select="asf_muxer"
2300 avi_demuxer_select="iso_media riffdec"
2301 avi_muxer_select="riffenc"
2302 avisynth_demuxer_deps="avisynth"
2303 avisynth_demuxer_select="riffdec"
2304 caf_demuxer_select="iso_media riffdec"
2305 dash_muxer_select="mp4_muxer"
2306 dirac_demuxer_select="dirac_parser"
2307 dv_demuxer_select="dvprofile"
2308 dv_muxer_select="dvprofile"
2309 dxa_demuxer_select="riffdec"
2310 eac3_demuxer_select="ac3_parser"
2311 f4v_muxer_select="mov_muxer"
2312 flac_demuxer_select="flac_parser"
2313 hds_muxer_select="flv_muxer"
2314 hls_muxer_select="mpegts_muxer"
2315 ipod_muxer_select="mov_muxer"
2316 ismv_muxer_select="mov_muxer"
2317 matroska_audio_muxer_select="matroska_muxer"
2318 matroska_demuxer_select="iso_media riffdec"
2319 matroska_demuxer_suggest="bzlib lzo zlib"
2320 matroska_muxer_select="iso_media riffenc"
2321 mmf_muxer_select="riffenc"
2322 mov_demuxer_select="iso_media riffdec"
2323 mov_demuxer_suggest="zlib"
2324 mov_muxer_select="iso_media riffenc rtpenc_chain"
2325 mp3_demuxer_select="mpegaudio_parser"
2326 mp4_muxer_select="mov_muxer"
2327 mpegts_demuxer_select="iso_media"
2328 mpegts_muxer_select="adts_muxer latm_muxer"
2329 mpegtsraw_demuxer_select="mpegts_demuxer"
2330 mxf_d10_muxer_select="mxf_muxer"
2331 nut_muxer_select="riffenc"
2332 nuv_demuxer_select="riffdec"
2333 oga_muxer_select="ogg_muxer"
2334 ogg_demuxer_select="dirac_parse"
2335 opus_muxer_select="ogg_muxer"
2336 psp_muxer_select="mov_muxer"
2337 rtp_demuxer_select="sdp_demuxer"
2338 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2339 rtsp_demuxer_select="http_protocol rtpdec"
2340 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2341 sap_demuxer_select="sdp_demuxer"
2342 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2343 sdp_demuxer_select="rtpdec"
2344 smoothstreaming_muxer_select="ismv_muxer"
2345 spdif_muxer_select="aac_parser"
2346 spx_muxer_select="ogg_muxer"
2347 swf_demuxer_suggest="zlib"
2348 tak_demuxer_select="tak_parser"
2349 tg2_muxer_select="mov_muxer"
2350 tgp_muxer_select="mov_muxer"
2351 w64_demuxer_select="wav_demuxer"
2352 wav_demuxer_select="riffdec"
2353 wav_muxer_select="riffenc"
2354 webm_muxer_select="iso_media riffenc"
2355 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2356 wtv_demuxer_select="mpegts_demuxer riffdec"
2357 xmv_demuxer_select="riffdec"
2358 xwma_demuxer_select="riffdec"
2359
2360 # indevs / outdevs
2361 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2362 alsa_outdev_deps="alsa_asoundlib_h"
2363 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2364 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2365 dv1394_indev_deps="dv1394"
2366 dv1394_indev_select="dv_demuxer"
2367 fbdev_indev_deps="linux_fb_h"
2368 jack_indev_deps="jack_jack_h"
2369 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2370 libcdio_indev_deps="libcdio"
2371 libdc1394_indev_deps="libdc1394"
2372 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2373 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2374 pulse_indev_deps="libpulse"
2375 sndio_indev_deps="sndio_h"
2376 sndio_outdev_deps="sndio_h"
2377 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2378 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2379 vfwcap_indev_extralibs="-lavicap32"
2380 xcbgrab_indev_deps="libxcb"
2381
2382 # protocols
2383 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2384 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2385 ffrtmpcrypt_protocol_select="tcp_protocol"
2386 ffrtmphttp_protocol_deps="!librtmp_protocol"
2387 ffrtmphttp_protocol_select="http_protocol"
2388 gopher_protocol_select="network"
2389 http_protocol_select="tcp_protocol"
2390 httpproxy_protocol_select="tcp_protocol"
2391 https_protocol_select="tls_protocol"
2392 icecast_protocol_select="http_protocol"
2393 librtmp_protocol_deps="librtmp"
2394 librtmpe_protocol_deps="librtmp"
2395 librtmps_protocol_deps="librtmp"
2396 librtmpt_protocol_deps="librtmp"
2397 librtmpte_protocol_deps="librtmp"
2398 mmsh_protocol_select="http_protocol"
2399 mmst_protocol_select="network"
2400 rtmp_protocol_deps="!librtmp_protocol"
2401 rtmp_protocol_select="tcp_protocol"
2402 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2403 rtmps_protocol_deps="!librtmp_protocol"
2404 rtmps_protocol_select="tls_protocol"
2405 rtmpt_protocol_select="ffrtmphttp_protocol"
2406 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2407 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2408 rtp_protocol_select="udp_protocol"
2409 sctp_protocol_deps="struct_sctp_event_subscribe"
2410 sctp_protocol_select="network"
2411 srtp_protocol_select="rtp_protocol srtp"
2412 tcp_protocol_select="network"
2413 tls_gnutls_protocol_deps="gnutls"
2414 tls_gnutls_protocol_select="tcp_protocol"
2415 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2416 tls_openssl_protocol_select="tcp_protocol"
2417 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2418 udp_protocol_select="network"
2419 unix_protocol_deps="sys_un_h"
2420 unix_protocol_select="network"
2421
2422 # filters
2423 blackframe_filter_deps="gpl"
2424 boxblur_filter_deps="gpl"
2425 bs2b_filter_deps="libbs2b"
2426 cropdetect_filter_deps="gpl"
2427 deinterlace_qsv_filter_deps="libmfx"
2428 delogo_filter_deps="gpl"
2429 drawtext_filter_deps="libfreetype"
2430 frei0r_filter_deps="frei0r dlopen"
2431 frei0r_filter_extralibs='$ldl'
2432 frei0r_src_filter_deps="frei0r dlopen"
2433 frei0r_src_filter_extralibs='$ldl'
2434 hdcd_filter_deps="libhdcd"
2435 hqdn3d_filter_deps="gpl"
2436 interlace_filter_deps="gpl"
2437 ocv_filter_deps="libopencv"
2438 resample_filter_deps="avresample"
2439 scale_filter_deps="swscale"
2440 scale_qsv_filter_deps="libmfx"
2441 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2442
2443 # examples
2444 decode_audio_example_deps="avcodec avutil"
2445 decode_video_example_deps="avcodec avutil"
2446 encode_audio_example_deps="avcodec avutil"
2447 encode_video_example_deps="avcodec avutil"
2448 filter_audio_example_deps="avfilter avutil"
2449 metadata_example_deps="avformat avutil"
2450 output_example_deps="avcodec avformat avutil swscale"
2451 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2452 transcode_aac_example_deps="avcodec avformat avresample"
2453
2454 # libraries, in linking order
2455 avcodec_deps="avutil"
2456 avdevice_deps="avformat avcodec avutil"
2457 avfilter_deps="avutil"
2458 avformat_deps="avcodec avutil"
2459 avresample_deps="avutil"
2460 swscale_deps="avutil"
2461
2462 # programs
2463 avconv_deps="avcodec avfilter avformat avresample swscale"
2464 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2465 fps_filter null_filter resample_filter scale_filter
2466 trim_filter"
2467 avplay_deps="avcodec avfilter avformat avresample sdl"
2468 avplay_libs='$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="$libdir_default"
2489
2490 # toolchain
2491 ar_default="ar"
2492 cc_default="gcc"
2493 host_cc_default="gcc"
2494 cp_f="cp -f"
2495 ln_s="ln -s -f"
2496 nm_default="nm -g"
2497 objformat="elf"
2498 pkg_config_default=pkg-config
2499 ranlib="ranlib"
2500 strip="strip"
2501 version_script='--version-script'
2502 yasmexe="yasm"
2503
2504 # machine
2505 arch_default=$(uname -m)
2506 cpu="generic"
2507 intrinsics="none"
2508
2509 # OS
2510 target_os_default=$(tolower $(uname -s))
2511 host_os=$target_os_default
2512
2513 # configurable options
2514 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2515
2516 enable asm
2517 enable debug
2518 enable doc
2519 enable faan faandct faanidct
2520 enable optimizations
2521 enable safe_bitstream_reader
2522 enable static
2523 enable swscale_alpha
2524 enable valgrind_backtrace
2525
2526 # By default, enable only those hwaccels that have no external dependencies.
2527 enable d3d11va dxva2 vda vdpau
2528
2529 # build settings
2530 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2531 LIBPREF="lib"
2532 LIBSUF=".a"
2533 FULLNAME='$(NAME)$(BUILDSUF)'
2534 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2535 SLIBPREF="lib"
2536 SLIBSUF=".so"
2537 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2538 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2539 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2540 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2541 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2542 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2543 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2544
2545 asflags_filter=echo
2546 cflags_filter=echo
2547 ldflags_filter=echo
2548
2549 AS_C='-c'
2550 AS_O='-o $@'
2551 CC_C='-c'
2552 CC_E='-E -o $@'
2553 CC_O='-o $@'
2554 OBJCC_C='-c'
2555 OBJCC_E='-E -o $@'
2556 OBJCC_O='-o $@'
2557 LD_O='-o $@'
2558 LD_LIB='-l%'
2559 LD_PATH='-L'
2560 HOSTCC_C='-c'
2561 HOSTCC_E='-E -o $@'
2562 HOSTCC_O='-o $@'
2563 HOSTLD_O='-o $@'
2564
2565 host_libs='-lm'
2566 host_cflags_filter=echo
2567 host_ldflags_filter=echo
2568
2569 target_path='$(CURDIR)'
2570
2571 # since the object filename is not given with the -MM flag, the compiler
2572 # is only able to print the basename, and we must add the path ourselves
2573 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2574 DEPFLAGS='-MM'
2575
2576 # find source path
2577 if test -f configure; then
2578 source_path=.
2579 else
2580 source_path=$(cd $(dirname "$0"); pwd)
2581 echo "$source_path" | grep -q '[[:blank:]]' &&
2582 die "Out of tree builds are impossible with whitespace in source path."
2583 test -e "$source_path/config.h" &&
2584 die "Out of tree builds are impossible with config.h in source dir."
2585 fi
2586
2587 for v in "$@"; do
2588 r=${v#*=}
2589 l=${v%"$r"}
2590 r=$(sh_quote "$r")
2591 LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2592 done
2593
2594 find_things(){
2595 thing=$1
2596 pattern=$2
2597 file=$source_path/$3
2598 sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2599 }
2600
2601 ENCODER_LIST=$(find_things encoder ENC libavcodec/allcodecs.c)
2602 DECODER_LIST=$(find_things decoder DEC libavcodec/allcodecs.c)
2603 HWACCEL_LIST=$(find_things hwaccel HWACCEL libavcodec/allcodecs.c)
2604 PARSER_LIST=$(find_things parser PARSER libavcodec/allcodecs.c)
2605 MUXER_LIST=$(find_things muxer _MUX libavformat/allformats.c)
2606 DEMUXER_LIST=$(find_things demuxer DEMUX libavformat/allformats.c)
2607 OUTDEV_LIST=$(find_things outdev OUTDEV libavdevice/alldevices.c)
2608 INDEV_LIST=$(find_things indev _IN libavdevice/alldevices.c)
2609 FILTER_LIST=$(find_things filter FILTER libavfilter/allfilters.c)
2610
2611 find_things_extern(){
2612 thing=$1
2613 pattern=$2
2614 file=$source_path/$3
2615 sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2616 }
2617
2618 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2619 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2620
2621 ALL_COMPONENTS="
2622 $BSF_LIST
2623 $DECODER_LIST
2624 $DEMUXER_LIST
2625 $ENCODER_LIST
2626 $FILTER_LIST
2627 $HWACCEL_LIST
2628 $INDEV_LIST
2629 $MUXER_LIST
2630 $OUTDEV_LIST
2631 $PARSER_LIST
2632 $PROTOCOL_LIST
2633 "
2634
2635 for n in $COMPONENT_LIST; do
2636 v=$(toupper ${n%s})_LIST
2637 eval enable \$$v
2638 eval ${n}_if_any="\$$v"
2639 done
2640
2641 enable $ARCH_EXT_LIST
2642
2643 die_unknown(){
2644 echo "Unknown option \"$1\"."
2645 echo "See $0 --help for available options."
2646 exit 1
2647 }
2648
2649 print_3_columns() {
2650 printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2651 }
2652
2653 show_list() {
2654 suffix=_$1
2655 shift
2656 echo $* | sed s/$suffix//g | print_3_columns
2657 exit 0
2658 }
2659
2660 rand_list(){
2661 IFS=', '
2662 set -- $*
2663 unset IFS
2664 for thing; do
2665 comp=${thing%:*}
2666 prob=${thing#$comp}
2667 prob=${prob#:}
2668 is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2669 echo "prob ${prob:-0.5}"
2670 printf '%s\n' $comp
2671 done
2672 }
2673
2674 do_random(){
2675 action=$1
2676 shift
2677 random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2678 $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2679 }
2680
2681 for opt do
2682 optval="${opt#*=}"
2683 case "$opt" in
2684 --extra-ldflags=*)
2685 add_ldflags $optval
2686 ;;
2687 --extra-ldexeflags=*)
2688 add_ldexeflags $optval
2689 ;;
2690 --extra-libs=*)
2691 add_extralibs $optval
2692 ;;
2693 --disable-devices)
2694 disable $INDEV_LIST $OUTDEV_LIST
2695 ;;
2696 --enable-debug=*)
2697 debuglevel="$optval"
2698 ;;
2699 --disable-programs)
2700 disable $PROGRAM_LIST
2701 ;;
2702 --disable-everything)
2703 map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2704 ;;
2705 --disable-all)
2706 map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2707 disable $LIBRARY_LIST $PROGRAM_LIST doc
2708 ;;
2709 --enable-random|--disable-random)
2710 action=${opt%%-random}
2711 do_random ${action#--} $COMPONENT_LIST
2712 ;;
2713 --enable-random=*|--disable-random=*)
2714 action=${opt%%-random=*}
2715 do_random ${action#--} $optval
2716 ;;
2717 --enable-*=*|--disable-*=*)
2718 eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2719 is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2720 eval list=\$$(toupper $thing)_LIST
2721 name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2722 $action $(filter "$name" $list)
2723 ;;
2724 --enable-avserver|--disable-avserver*)
2725 warn "avserver has been removed, the ${opt} option is only"\
2726 "provided for compatibility and will be removed in the future"
2727 ;;
2728 --enable-?*|--disable-?*)
2729 eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2730 if is_in $option $COMPONENT_LIST; then
2731 test $action = disable && action=unset
2732 eval $action \$$(toupper ${option%s})_LIST
2733 elif is_in $option $CMDLINE_SELECT; then
2734 $action $option
2735 else
2736 die_unknown $opt
2737 fi
2738 ;;
2739 --list-*)
2740 NAME="${opt#--list-}"
2741 is_in $NAME $COMPONENT_LIST || die_unknown $opt
2742 NAME=${NAME%s}
2743 eval show_list $NAME \$$(toupper $NAME)_LIST
2744 ;;
2745 --help|-h) show_help
2746 ;;
2747 --quiet|-q) quiet=yes
2748 ;;
2749 *)
2750 optname="${opt%%=*}"
2751 optname="${optname#--}"
2752 optname=$(echo "$optname" | sed 's/-/_/g')
2753 if is_in $optname $CMDLINE_SET; then
2754 eval $optname='$optval'
2755 elif is_in $optname $CMDLINE_APPEND; then
2756 append $optname "$optval"
2757 else
2758 die_unknown $opt
2759 fi
2760 ;;
2761 esac
2762 done
2763
2764 for e in $env; do
2765 eval "export $e"
2766 done
2767
2768 disabled logging && logfile=/dev/null
2769
2770 # Die early if licensing-related configure options are incompatible.
2771 die_license_disabled() {
2772 enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2773 }
2774
2775 map "die_license_disabled gpl" $EXTERNAL_LIBRARY_GPL_LIST
2776 map "die_license_disabled nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2777 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2778
2779 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2780
2781 # Disable all the library-specific components if the library itself
2782 # is disabled, see AVCODEC_LIST and following _LIST variables.
2783
2784 disable_components(){
2785 disabled ${1} && disable $(
2786 eval components="\$$(toupper ${1})_COMPONENTS"
2787 map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2788 )
2789 }
2790
2791 map 'disable_components $v' $LIBRARY_LIST
2792
2793 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2794 set >> $logfile
2795
2796 case "$toolchain" in
2797 *-asan)
2798 cc_default="${toolchain%-asan}"
2799 add_cflags -fsanitize=address
2800 add_ldflags -fsanitize=address
2801 ;;
2802 *-msan)
2803 cc_default="${toolchain%-msan}"
2804 add_cflags -fsanitize=memory -fsanitize-memory-track-origins
2805 add_ldflags -fsanitize=memory
2806 ;;
2807 *-tsan)
2808 cc_default="${toolchain%-tsan}"
2809 add_cflags -fsanitize=thread -pie
2810 add_ldflags -fsanitize=thread -pie
2811 case "$toolchain" in
2812 gcc-tsan)
2813 add_cflags -fPIC
2814 add_ldflags -fPIC
2815 ;;
2816 esac
2817 ;;
2818 *-usan)
2819 cc_default="${toolchain%-usan}"
2820 add_cflags -fsanitize=undefined
2821 add_ldflags -fsanitize=undefined
2822 case "$toolchain" in
2823 clang-usan)
2824 add_cflags -O1
2825 ;;
2826 esac
2827 ;;
2828 valgrind-*)
2829 target_exec_default="valgrind"
2830 case "$toolchain" in
2831 valgrind-massif)
2832 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2833 ;;
2834 valgrind-memcheck)
2835 target_exec_args="--track-origins=yes --leak-check=full"
2836 ;;
2837 esac
2838 ;;
2839 msvc)
2840 # Check whether the current MSVC version needs the C99 converter.
2841 # From MSVC 2013 (compiler major version 18) onwards, it does actually
2842 # support enough of C99 to build libav. Default to the new
2843 # behaviour if the regexp was unable to match anything, since this
2844 # successfully parses the version number of existing supported
2845 # versions that require the converter (MSVC 2010 and 2012).
2846 cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2847 if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2848 cc_default="cl"
2849 else
2850 cc_default="c99wrap cl"
2851 fi
2852 ld_default="$source_path/compat/windows/mslink"
2853 nm_default="dumpbin -symbols"
2854 ar_default="lib"
2855 case "$arch" in
2856 arm*)
2857 as_default="armasm"
2858 ;;
2859 esac
2860 target_os_default="win32"
2861 # Use a relative path for TMPDIR. This makes sure all the
2862 # ffconf temp files are written with a relative path, avoiding
2863 # issues with msys/win32 path conversion for MSVC parameters
2864 # such as -Fo<file> or -out:<file>.
2865 TMPDIR=.
2866 ;;
2867 icl)
2868 cc_default="icl"
2869 ld_default="xilink"
2870 nm_default="dumpbin -symbols"
2871 ar_default="xilib"
2872 target_os_default="win32"
2873 TMPDIR=.
2874 ;;
2875 gcov)
2876 add_cflags -fprofile-arcs -ftest-coverage
2877 add_ldflags -fprofile-arcs -ftest-coverage
2878 ;;
2879 llvm-cov)
2880 add_cflags -fprofile-arcs -ftest-coverage
2881 add_ldflags --coverage
2882 ;;
2883 hardened)
2884 add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2885 add_cflags -fno-strict-overflow -fstack-protector-all
2886 add_ldflags -Wl,-z,relro -Wl,-z,now
2887 ;;
2888 ?*)
2889 die "Unknown toolchain $toolchain"
2890 ;;
2891 esac
2892
2893 test -n "$cross_prefix" && enable cross_compile
2894
2895 if enabled cross_compile; then
2896 test -n "$arch" && test -n "$target_os" ||
2897 die "Must specify target arch and OS when cross-compiling"
2898 fi
2899
2900 ar_default="${cross_prefix}${ar_default}"
2901 cc_default="${cross_prefix}${cc_default}"
2902 occ_default="${cross_prefix}${occ_default}"
2903 nm_default="${cross_prefix}${nm_default}"
2904 pkg_config_default="${cross_prefix}${pkg_config_default}"
2905 ranlib="${cross_prefix}${ranlib}"
2906 strip="${cross_prefix}${strip}"
2907
2908 sysinclude_default="${sysroot}/usr/include"
2909
2910 set_default arch cc pkg_config sysinclude target_exec target_os
2911 enabled cross_compile || host_cc_default=$cc
2912 set_default host_cc
2913
2914 if ! $pkg_config --version >/dev/null 2>&1; then
2915 warn "$pkg_config not found, library detection may fail."
2916 pkg_config=false
2917 fi
2918
2919 exesuf() {
2920 case $1 in
2921 mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2922 esac
2923 }
2924
2925 EXESUF=$(exesuf $target_os)
2926 HOSTEXESUF=$(exesuf $host_os)
2927
2928 # set temporary file name
2929 : ${TMPDIR:=$TEMPDIR}
2930 : ${TMPDIR:=$TMP}
2931 : ${TMPDIR:=/tmp}
2932
2933 if ! check_cmd mktemp -u XXXXXX; then
2934 # simple replacement for missing mktemp
2935 # NOT SAFE FOR GENERAL USE
2936 mktemp(){
2937 echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2938 }
2939 fi
2940
2941 tmpfile(){
2942 tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2943 (set -C; exec > $tmp) 2>/dev/null ||
2944 die "Unable to create temporary file in $TMPDIR."
2945 append TMPFILES $tmp
2946 eval $1=$tmp
2947 }
2948
2949 trap 'rm -f -- $TMPFILES' EXIT
2950
2951 tmpfile TMPASM .asm
2952 tmpfile TMPC .c
2953 tmpfile TMPE $EXESUF
2954 tmpfile TMPH .h
2955 tmpfile TMPO .o
2956 tmpfile TMPS .S
2957 tmpfile TMPSH .sh
2958 tmpfile TMPV .ver
2959
2960 unset -f mktemp
2961
2962 chmod +x $TMPE
2963
2964 # make sure we can execute files in $TMPDIR
2965 cat > $TMPSH 2>> $logfile <<EOF
2966 #! /bin/sh
2967 EOF
2968 chmod +x $TMPSH >> $logfile 2>&1
2969 if ! $TMPSH >> $logfile 2>&1; then
2970 cat <<EOF
2971 Unable to create and execute files in $TMPDIR. Set the TMPDIR environment
2972 variable to another directory and make sure that it is not mounted noexec.
2973 EOF
2974 die "Sanity test failed."
2975 fi
2976
2977 armasm_flags(){
2978 for flag; do
2979 case $flag in
2980 # Filter out MSVC cl.exe options from cflags that shouldn't
2981 # be passed to gas-preprocessor
2982 -M[TD]*) ;;
2983 *) echo $flag ;;
2984 esac
2985 done
2986 }
2987
2988 ccc_flags(){
2989 for flag; do
2990 case $flag in
2991 -std=c99) echo -c99 ;;
2992 -mcpu=*) echo -arch ${flag#*=} ;;
2993 -mieee) echo -ieee ;;
2994 -O*|-fast) echo $flag ;;
2995 -fno-math-errno) echo -assume nomath_errno ;;
2996 -g) echo -g3 ;;
2997 -Wall) echo -msg_enable level2 ;;
2998 -Wno-pointer-sign) echo -msg_disable ptrmismatch1 ;;
2999 -Wl,*) echo $flag ;;
3000 -f*|-W*) ;;
3001 *) echo $flag ;;
3002 esac
3003 done
3004 }
3005
3006 cparser_flags(){
3007 for flag; do
3008 case $flag in
3009 -Wno-switch) echo -Wno-switch-enum ;;
3010 -Wno-format-zero-length) ;;
3011 -Wdisabled-optimization) ;;
3012 -Wno-pointer-sign) echo -Wno-other ;;
3013 *) echo $flag ;;
3014 esac
3015 done
3016 }
3017
3018 msvc_common_flags(){
3019 for flag; do
3020 case $flag in
3021 # In addition to specifying certain flags under the compiler
3022 # specific filters, they must be specified here as well or else the
3023 # generic catch all at the bottom will print the original flag.
3024 -Wall) ;;
3025 -std=c99) ;;
3026 # Common flags
3027 -fomit-frame-pointer) ;;
3028 -g) echo -Z7 ;;
3029 -fno-math-errno) ;;
3030 -fno-common) ;;
3031 -fno-signed-zeros) ;;
3032 -fPIC) ;;
3033 -mthumb) ;;
3034 -march=*) ;;
3035 -lz) echo zlib.lib ;;
3036 -lavifil32) echo vfw32.lib ;;
3037 -lavicap32) echo vfw32.lib user32.lib ;;
3038 -lx264) echo libx264.lib ;;
3039 -l*) echo ${flag#-l}.lib ;;
3040 -L*) echo -libpath:${flag#-L} ;;
3041 *) echo $flag ;;
3042 esac
3043 done
3044 }
3045
3046 msvc_flags(){
3047 msvc_common_flags "$@"
3048 for flag; do
3049 case $flag in
3050 -Wall) echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
3051 -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3052 -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3053 -wd4273 -wd4554 -wd4701 ;;
3054 esac
3055 done
3056 }
3057
3058 icl_flags(){
3059 msvc_common_flags "$@"
3060 for flag; do
3061 case $flag in
3062 # Despite what Intel's documentation says -Wall, which is supported
3063 # on Windows, does enable remarks so disable them here.
3064 -Wall) echo $flag -Qdiag-disable:remark ;;
3065 -std=c99) echo -Qstd=c99 ;;
3066 esac
3067 done
3068 }
3069
3070 pgi_flags(){
3071 for flag; do
3072 case $flag in
3073 -flto) echo -Mipa=fast,libopt,libinline,vestigial ;;
3074 -fomit-frame-pointer) echo -Mnoframe ;;
3075 -g) echo -gopt ;;
3076 *) echo $flag ;;
3077 esac
3078 done
3079 }
3080
3081 suncc_flags(){
3082 for flag; do
3083 case $flag in
3084 -march=*|-mcpu=*)
3085 case "${flag#*=}" in
3086 native) echo -xtarget=native ;;
3087 v9|niagara) echo -xarch=sparc ;;
3088 ultrasparc) echo -xarch=sparcvis ;;
3089 ultrasparc3|niagara2) echo -xarch=sparcvis2 ;;
3090 i586|pentium) echo -xchip=pentium ;;
3091 i686|pentiumpro|pentium2) echo -xtarget=pentium_pro ;;
3092 pentium3*|c3-2) echo -xtarget=pentium3 ;;
3093 pentium-m) echo -xarch=sse2 -xchip=pentium3 ;;
3094 pentium4*) echo -xtarget=pentium4 ;;
3095 prescott|nocona) echo -xarch=sse3 -xchip=pentium4 ;;
3096 *-sse3) echo -xarch=sse3 ;;
3097 core2) echo -xarch=ssse3 -xchip=core2 ;;
3098 corei7) echo -xarch=sse4_2 -xchip=nehalem ;;
3099 corei7-avx) echo -xarch=avx -xchip=sandybridge ;;
3100 amdfam10|barcelona|bdver*) echo -xarch=sse4_1 ;;
3101 athlon-4|athlon-[mx]p) echo -xarch=ssea ;;
3102 k8|opteron|athlon64|athlon-fx)
3103 echo -xarch=sse2a ;;
3104 athlon*) echo -xarch=pentium_proa ;;
3105 esac
3106 ;;
3107 -std=c99) echo -xc99 ;;
3108 -fomit-frame-pointer) echo -xregs=frameptr ;;
3109 -fPIC) echo -KPIC -xcode=pic32 ;;
3110 -W*,*) echo $flag ;;
3111 -f*-*|-W*|-mimpure-text) ;;
3112 -shared) echo -G ;;
3113 *) echo $flag ;;
3114 esac
3115 done
3116 }
3117
3118 tms470_flags(){
3119 for flag; do
3120 case $flag in
3121 -march=*|-mcpu=*)
3122 case "${flag#*=}" in
3123 armv7-a|cortex-a*) echo -mv=7a8 ;;
3124 armv7-r|cortex-r*) echo -mv=7r4 ;;
3125 armv7-m|cortex-m*) echo -mv=7m3 ;;
3126 armv6*|arm11*) echo -mv=6 ;;
3127 armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3128 echo -mv=5e ;;
3129 armv4*|arm7*|arm9[24]*) echo -mv=4 ;;
3130 esac
3131 ;;
3132 -mfpu=neon) echo --float_support=vfpv3 --neon ;;
3133 -mfpu=vfp) echo --float_support=vfpv2 ;;
3134 -mfpu=vfpv3) echo --float_support=vfpv3 ;;
3135 -mfpu=vfpv3-d16) echo --float_support=vfpv3d16 ;;
3136 -msoft-float) echo --float_support=vfplib ;;
3137 -O[0-3]|-mf=*) echo $flag ;;
3138 -g) echo -g -mn ;;
3139 -pds=*) echo $flag ;;
3140 -D*|-I*) echo $flag ;;
3141 --gcc|--abi=*) echo $flag ;;
3142 -me) echo $flag ;;
3143 esac
3144 done
3145 }
3146
3147 probe_cc(){
3148 pfx=$1
3149 _cc=$2
3150
3151 unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3152 unset _ld_o _ldflags _ld_lib _ld_path
3153 unset _depflags _DEPCMD _DEPFLAGS
3154 _flags_filter=echo
3155
3156 if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3157 _type=llvm_gcc
3158 gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3159 _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3160 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3161 _cflags_speed='-O3'
3162 _cflags_size='-Os'
3163 elif $_cc -v 2>&1 | grep -qi ^gcc; then
3164 _type=gcc
3165 gcc_version=$($_cc --version | head -n1)
3166 gcc_basever=$($_cc -dumpversion)
3167 gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3168 gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3169 _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3170 if ! $_cc -dumpversion | grep -q '^2\.'; then
3171 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3172 fi
3173 _cflags_speed='-O3'
3174 _cflags_size='-Os'
3175 elif $_cc --version 2>/dev/null | grep -q ^icc; then
3176 _type=icc
3177 _ident=$($_cc --version | head -n1)
3178 _depflags='-MMD'
3179 _cflags_speed='-O3'
3180 _cflags_size='-Os'
3181 _cflags_noopt='-O1'
3182 elif $_cc -v 2>&1 | grep -q xlc; then
3183 _type=xlc
3184 _ident=$($_cc -qversion 2>/dev/null | head -n1)
3185 _cflags_speed='-O5'
3186 _cflags_size='-O5 -qcompact'
3187 elif $_cc -V 2>/dev/null | grep -q Compaq; then
3188 _type=ccc
3189 _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3190 _DEPFLAGS='-M'
3191 _cflags_speed='-fast'
3192 _cflags_size='-O1'
3193 _flags_filter=ccc_flags
3194 elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3195 test -d "$sysroot" || die "No valid sysroot specified."
3196 _type=armcc
3197 _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3198 armcc_conf="$PWD/armcc.conf"
3199 $_cc --arm_linux_configure \
3200 --arm_linux_config_file="$armcc_conf" \
3201 --configure_sysroot="$sysroot" \
3202 --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3203 die "Error creating armcc configuration file."
3204 $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3205 _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3206 as_default="${cross_prefix}gcc"
3207 _depflags='-MMD'
3208 _cflags_speed='-O3'
3209 _cflags_size='-Os'
3210 elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3211 _type=tms470
3212 _ident=$($_cc -version | head -n1 | tr -s ' ')
3213 _flags='--gcc --abi=eabi -me'
3214 _cc_e='-ppl -fe=$@'
3215 _cc_o='-fe=$@'
3216 _depflags='-ppa -ppd=$(@:.o=.d)'
3217 _cflags_speed='-O3 -mf=5'
3218 _cflags_size='-O3 -mf=2'
3219 _flags_filter=tms470_flags
3220 elif $_cc -v 2>&1 | grep -q clang; then
3221 _type=clang
3222 _ident=$($_cc --version 2>/dev/null | head -n1)
3223 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3224 _cflags_speed='-O3'
3225 _cflags_size='-Os'
3226 elif $_cc -V 2>&1 | grep -q Sun; then
3227 _type=suncc
3228 _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3229 _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3230 _DEPFLAGS='-xM1 -xc99'
3231 _ldflags='-std=c99'
3232 _cflags_speed='-O5'
3233 _cflags_size='-O5 -xspace'
3234 _flags_filter=suncc_flags
3235 elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3236 _type=pathscale
3237 _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3238 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3239 _cflags_speed='-O2'
3240 _cflags_size='-Os'
3241 _flags_filter='filter_out -Wdisabled-optimization'
3242 elif $_cc -v 2>&1 | grep -q Open64; then
3243 _type=open64
3244 _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3245 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3246 _cflags_speed='-O2'
3247 _cflags_size='-Os'
3248 _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3249 elif $_cc -V 2>&1 | grep -q Portland; then
3250 _type=pgi
3251 _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3252 opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3253 _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3254 _cflags_size="-O2 -Munroll=c:1 $opt_common"
3255 _cflags_noopt="-O1"
3256 _flags_filter=pgi_flags
3257 elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3258 _type=armasm
3259 _ident=$($_cc | head -n1)
3260 # 4509: "This form of conditional instruction is deprecated"
3261 _flags="-nologo -ignore 4509"
3262 _flags_filter=armasm_flags
3263 elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3264 _type=msvc
3265 _ident=$($_cc 2>&1 | head -n1)
3266 _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3267 _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3268 _cflags_speed="-O2"
3269 _cflags_size="-O1"
3270 if $_cc -nologo- 2>&1 | grep -q Linker; then
3271 _ld_o='-out:$@'
3272 else
3273 _ld_o='-Fe$@'
3274 fi
3275 _cc_o='-Fo$@'
3276 _cc_e='-P -Fi$@'
3277 _flags_filter=msvc_flags
3278 _ld_lib='lib%.a'
3279 _ld_path='-libpath:'
3280 _flags='-nologo'
3281 elif $_cc 2>&1 | grep -q Intel; then
3282 _type=icl
3283 _ident=$($_cc 2>&1 | head -n1)
3284 _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3285 # Not only is O3 broken on 13.x+ but it is slower on all previous
3286 # versions (tested) as well.
3287 _cflags_speed="-O2"
3288 _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3289 if $_cc 2>&1 | grep -q Linker; then
3290 _ld_o='-out:$@'
3291 else
3292 _ld_o='-Fe$@'
3293 fi
3294 _cc_o='-Fo$@'
3295 _cc_e='-P'
3296 _flags_filter=icl_flags
3297 _ld_lib='lib%.a'
3298 _ld_path='-libpath:'
3299 # -Qdiag-error to make icl error when seeing certain unknown arguments
3300 _flags='-nologo -Qdiag-error:4044,10157'
3301 # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3302 # with MSVC which enables it by default.
3303 _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3304 elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3305 # lld can emulate multiple different linkers; in ms link.exe mode,
3306 # the -? parameter gives the help output which contains an identifyable
3307 # string, while it gives an error in other modes.
3308 _type=lld-link
3309 # The link.exe mode doesn't have a switch for getting the version,
3310 # but we can force it back to gnu mode and get the version from there.
3311 _ident=$($_cc -flavor gnu --version 2>/dev/null)
3312 _ld_o='-out:$@'
3313 _flags_filter=msvc_flags
3314 _ld_lib='lib%.a'
3315 _ld_path='-libpath:'
3316 elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3317 _type=cparser
3318 _ident=$($_cc --version | head -n1)
3319 _depflags='-MMD'
3320 _cflags_speed='-O4'
3321 _cflags_size='-O2'
3322 _flags_filter=cparser_flags
3323 fi
3324
3325 eval ${pfx}_type=\$_type
3326 eval ${pfx}_ident=\$_ident
3327 }
3328
3329 set_ccvars(){
3330 eval ${1}_C=\${_cc_c-\${${1}_C}}
3331 eval ${1}_E=\${_cc_e-\${${1}_E}}
3332 eval ${1}_O=\${_cc_o-\${${1}_O}}
3333
3334 if [ -n "$_depflags" ]; then
3335 eval ${1}_DEPFLAGS=\$_depflags
3336 else
3337 eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3338 eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3339 eval DEP${1}FLAGS=\$_flags
3340 fi
3341 }
3342
3343 probe_cc cc "$cc"
3344 cflags_filter=$_flags_filter
3345 cflags_speed=$_cflags_speed
3346 cflags_size=$_cflags_size
3347 cflags_noopt=$_cflags_noopt
3348 add_cflags $_flags $_cflags
3349 cc_ldflags=$_ldflags
3350 set_ccvars CC
3351
3352 probe_cc hostcc "$host_cc"
3353 host_cflags_filter=$_flags_filter
3354 add_host_cflags $_flags $_cflags
3355 set_ccvars HOSTCC
3356
3357 test -n "$cc_type" && enable $cc_type ||
3358 warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3359
3360 : ${as_default:=$cc}
3361 : ${objcc_default:=$cc}
3362 : ${dep_cc_default:=$cc}
3363 : ${ld_default:=$cc}
3364 : ${host_ld_default:=$host_cc}
3365 set_default ar as objcc dep_cc ld host_ld
3366
3367 probe_cc as "$as"
3368 asflags_filter=$_flags_filter
3369 add_asflags $_flags $_cflags
3370 set_ccvars AS
3371
3372 probe_cc objcc "$objcc"
3373 objcflags_filter=$_flags_filter
3374 add_objcflags $_flags $_cflags
3375 set_ccvars OBJC
3376
3377 probe_cc ld "$ld"
3378 ldflags_filter=$_flags_filter
3379 add_ldflags $_flags $_ldflags
3380 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3381 LD_O=${_ld_o-$LD_O}
3382 LD_LIB=${_ld_lib-$LD_LIB}
3383 LD_PATH=${_ld_path-$LD_PATH}
3384
3385 probe_cc hostld "$host_ld"
3386 host_ldflags_filter=$_flags_filter
3387 add_host_ldflags $_flags $_ldflags
3388 HOSTLD_O=${_ld_o-$HOSTLD_O}
3389
3390 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3391 probe_cc depcc "$dep_cc"
3392 CCDEP=${_DEPCMD:-$DEPCMD}
3393 CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3394 DEPCCFLAGS=$_flags
3395 fi
3396
3397 if $ar 2>&1 | grep -q Microsoft; then
3398 arflags="-nologo"
3399 ar_o='-out:$@'
3400 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3401 arflags="rq"
3402 ar_o='$@'
3403 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3404 arflags='-Xany -r -c'
3405 ar_o='$@'
3406 else
3407 arflags="rc"
3408 ar_o='$@'
3409 fi
3410
3411 add_cflags $extra_cflags
3412 add_objcflags $extra_objcflags
3413 add_asflags $extra_cflags
3414
3415 if test -n "$sysroot"; then
3416 case "$cc_type" in
3417 gcc|llvm_gcc|clang)
3418 add_cppflags --sysroot="$sysroot"
3419 add_ldflags --sysroot="$sysroot"
3420 ;;
3421 tms470)
3422 add_cppflags -I"$sysinclude"
3423 add_ldflags --sysroot="$sysroot"
3424 ;;
3425 esac
3426 fi
3427
3428 if test "$cpu" = host; then
3429 enabled cross_compile &&
3430 die "--cpu=host makes no sense when cross-compiling."
3431
3432 case "$cc_type" in
3433 gcc|llvm_gcc)
3434 check_native(){
3435 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3436 sed -n "/cc1.*$1=/{
3437 s/.*$1=\\([^ ]*\\).*/\\1/
3438 p
3439 q
3440 }" $TMPE
3441 }
3442 cpu=$(check_native -march || check_native -mcpu)
3443 ;;
3444 esac
3445
3446 test "${cpu:-host}" = host &&
3447 die "--cpu=host not supported with compiler $cc"
3448 fi
3449
3450 # Deal with common $arch aliases
3451 case "$arch" in
3452 aarch64|arm64)
3453 arch="aarch64"
3454 ;;
3455 arm*)
3456 arch="arm"
3457 ;;
3458 mips*|IP*)
3459 case "$arch" in
3460 *el)
3461 add_cppflags -EL
3462 add_ldflags -EL
3463 ;;
3464 *eb)
3465 add_cppflags -EB
3466 add_ldflags -EB
3467 ;;
3468 esac
3469 arch="mips"
3470 ;;
3471 parisc*|hppa*)
3472 arch="parisc"
3473 ;;
3474 "Power Macintosh"|ppc*|powerpc*)
3475 arch="ppc"
3476 ;;
3477 s390|s390x)
3478 arch="s390"
3479 ;;
3480 sh4|sh)
3481 arch="sh4"
3482 ;;
3483 sun4u|sparc*)
3484 arch="sparc"
3485 ;;
3486 tilegx|tile-gx)
3487 arch="tilegx"
3488 ;;
3489 i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3490 arch="x86"
3491 ;;
3492 esac
3493
3494 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3495 enable $arch
3496
3497 # Add processor-specific flags
3498 if enabled aarch64; then
3499
3500 case $cpu in
3501 armv*)
3502 cpuflags="-march=$cpu"
3503 ;;
3504 *)
3505 cpuflags="-mcpu=$cpu"
3506 ;;
3507 esac
3508
3509 elif enabled alpha; then
3510
3511 cpuflags="-mcpu=$cpu"
3512
3513 elif enabled arm; then
3514
3515 check_arm_arch() {
3516 check_cpp_condition stddef.h \
3517 "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3518 $cpuflags
3519 }
3520
3521 probe_arm_arch() {
3522 if check_arm_arch 4; then echo armv4
3523 elif check_arm_arch 4T; then echo armv4t
3524 elif check_arm_arch 5; then echo armv5
3525 elif check_arm_arch 5E; then echo armv5e
3526 elif check_arm_arch 5T; then echo armv5t
3527 elif check_arm_arch 5TE; then echo armv5te
3528 elif check_arm_arch 5TEJ; then echo armv5te
3529 elif check_arm_arch 6; then echo armv6
3530 elif check_arm_arch 6J; then echo armv6j
3531 elif check_arm_arch 6K; then echo armv6k
3532 elif check_arm_arch 6Z; then echo armv6z
3533 elif check_arm_arch 6ZK; then echo armv6zk
3534 elif check_arm_arch 6T2; then echo armv6t2
3535 elif check_arm_arch 7; then echo armv7
3536 elif check_arm_arch 7A 7_A; then echo armv7-a
3537 elif check_arm_arch 7S; then echo armv7-a
3538 elif check_arm_arch 7R 7_R; then echo armv7-r
3539 elif check_arm_arch 7M 7_M; then echo armv7-m
3540 elif check_arm_arch 7EM 7E_M; then echo armv7-m
3541 elif check_arm_arch 8A 8_A; then echo armv8-a
3542 fi
3543 }
3544
3545 [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3546
3547 case $cpu in
3548 armv*)
3549 cpuflags="-march=$cpu"
3550 subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3551 ;;
3552 *)
3553 cpuflags="-mcpu=$cpu"
3554 case $cpu in
3555 cortex-a*) subarch=armv7a ;;
3556 cortex-r*) subarch=armv7r ;;
3557 cortex-m*) enable thumb; subarch=armv7m ;;
3558 arm11*) subarch=armv6 ;;
3559 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3560 armv4*|arm7*|arm9[24]*) subarch=armv4 ;;
3561 *) subarch=$(probe_arm_arch) ;;
3562 esac
3563 ;;
3564 esac
3565
3566 case "$subarch" in
3567 armv5t*) enable fast_clz ;;
3568 armv[6-8]*) enable fast_clz fast_unaligned ;;
3569 esac
3570
3571 elif enabled avr32; then
3572
3573 case $cpu in
3574 ap7[02]0[0-2])
3575 subarch="avr32_ap"
3576 cpuflags="-mpart=$cpu"
3577 ;;
3578 ap)
3579 subarch="avr32_ap"
3580 cpuflags="-march=$cpu"
3581 ;;
3582 uc3[ab]*)
3583 subarch="avr32_uc"
3584 cpuflags="-mcpu=$cpu"
3585 ;;
3586 uc)
3587 subarch="avr32_uc"
3588 cpuflags="-march=$cpu"
3589 ;;
3590 esac
3591
3592 elif enabled bfin; then
3593
3594 cpuflags="-mcpu=$cpu"
3595
3596 elif enabled mips; then
3597
3598 cpuflags="-march=$cpu"
3599
3600 elif enabled ppc; then
3601
3602 disable ldbrx
3603
3604 case $(tolower $cpu) in
3605 601|ppc601|powerpc601)
3606 cpuflags="-mcpu=601"
3607 disable altivec
3608 ;;
3609 603*|ppc603*|powerpc603*)
3610 cpuflags="-mcpu=603"
3611 disable altivec
3612 ;;
3613 604*|ppc604*|powerpc604*)
3614 cpuflags="-mcpu=604"
3615 disable altivec
3616 ;;
3617 g3|75*|ppc75*|powerpc75*)
3618 cpuflags="-mcpu=750"
3619 disable altivec
3620 ;;
3621 g4|745*|ppc745*|powerpc745*)
3622 cpuflags="-mcpu=7450"
3623 disable vsx
3624 ;;
3625 74*|ppc74*|powerpc74*)
3626 cpuflags="-mcpu=7400"
3627 disable vsx
3628 ;;
3629 g5|970|ppc970|powerpc970)
3630 cpuflags="-mcpu=970"
3631 disable vsx
3632 ;;
3633 power[3-6]*)
3634 cpuflags="-mcpu=$cpu"
3635 disable vsx
3636 ;;
3637 power[7-8]*)
3638 cpuflags="-mcpu=$cpu"
3639 enable ldbrx
3640 ;;
3641 cell)
3642 cpuflags="-mcpu=cell"
3643 enable ldbrx
3644 disable vsx
3645 ;;
3646 e500mc)
3647 cpuflags="-mcpu=e500mc"
3648 disable altivec
3649 ;;
3650 e500v2)
3651 cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3652 disable altivec
3653 disable dcbzl
3654 ;;
3655 e500)
3656 cpuflags="-mcpu=8540 -mhard-float"
3657 disable altivec
3658 disable dcbzl
3659 ;;
3660 esac
3661
3662 elif enabled sparc; then
3663
3664 case $cpu in
3665 cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3666 cpuflags="-mcpu=$cpu"
3667 ;;
3668 ultrasparc*|niagara[234])
3669 cpuflags="-mcpu=$cpu"
3670 ;;
3671 esac
3672
3673 elif enabled x86; then
3674
3675 case $cpu in
3676 i[345]86|pentium)
3677 cpuflags="-march=$cpu"
3678 disable i686
3679 disable mmx
3680 ;;
3681 # targets that do NOT support nopl and conditional mov (cmov)
3682 pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3683 cpuflags="-march=$cpu"
3684 disable i686
3685 ;;
3686 # targets that do support nopl and conditional mov (cmov)
3687 i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3688 cpuflags="-march=$cpu"
3689 enable i686
3690 enable fast_cmov
3691 ;;
3692 # targets that do support conditional mov but on which it's slow
3693 pentium4|pentium4m|prescott|nocona)
3694 cpuflags="-march=$cpu"
3695 enable i686
3696 disable fast_cmov
3697 ;;
3698 esac
3699
3700 fi
3701
3702 if [ "$cpu" != generic ]; then
3703 add_cflags $cpuflags
3704 add_asflags $cpuflags
3705 test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3706 fi
3707
3708 # compiler sanity check
3709 check_exec <<EOF
3710 int main(void){ return 0; }
3711 EOF
3712 if test "$?" != 0; then
3713 echo "$cc is unable to create an executable file."
3714 if test -z "$cross_prefix" && ! enabled cross_compile ; then
3715 echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3716 echo "Only do this if you know what cross compiling means."
3717 fi
3718 die "C compiler test failed."
3719 fi
3720
3721 add_cppflags -D_ISOC99_SOURCE
3722
3723 # some compilers silently accept -std=c11, so we also need to check that the
3724 # version macro is defined properly
3725 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3726 add_cflags -std=c11
3727 else
3728 check_cflags -std=c99
3729 fi
3730
3731 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3732 #include <stdlib.h>
3733 EOF
3734 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3735 #include <stdlib.h>
3736 EOF
3737
3738 add_host_cppflags -D_ISOC99_SOURCE
3739 check_host_cflags -std=c99
3740 check_host_cflags -Wall
3741 check_host_cflags -O3
3742
3743 check_64bit(){
3744 arch32=$1
3745 arch64=$2
3746 expr=$3
3747 check_code cc "" "int test[2*($expr) - 1]" &&
3748 subarch=$arch64 || subarch=$arch32
3749 }
3750
3751 case "$arch" in
3752 aarch64|alpha|ia64)
3753 spic=$shared
3754 ;;
3755 mips)
3756 check_64bit mips mips64 '_MIPS_SIM > 1'
3757 spic=$shared
3758 ;;
3759 parisc)
3760 check_64bit parisc parisc64 'sizeof(void *) > 4'
3761 spic=$shared
3762 ;;
3763 ppc)
3764 check_64bit ppc ppc64 'sizeof(void *) > 4'
3765 spic=$shared
3766 ;;
3767 s390)
3768 check_64bit s390 s390x 'sizeof(void *) > 4'
3769 spic=$shared
3770 ;;
3771 sparc)
3772 check_64bit sparc sparc64 'sizeof(void *) > 4'
3773 spic=$shared
3774 ;;
3775 x86)
3776 check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3777 if test "$subarch" = "x86_64"; then
3778 spic=$shared
3779 fi
3780 ;;
3781 esac
3782
3783 enable $subarch
3784 enabled spic && enable_weak pic
3785
3786 # OS specific
3787 case $target_os in
3788 aix)
3789 SHFLAGS=-shared
3790 add_cppflags '-I\$(SRC_PATH)/compat/aix'
3791 enabled shared && add_ldflags -Wl,-brtl
3792 ;;
3793 android)
3794 disable symver
3795 enable section_data_rel_ro
3796 SLIB_INSTALL_NAME='$(SLIBNAME)'
3797 SLIB_INSTALL_LINKS=
3798 SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3799 ;;
3800 haiku)
3801 prefix_default="/boot/common"
3802 network_extralibs="-lnetwork"
3803 host_libs=
3804 ;;
3805 sunos)
3806 SHFLAGS='-shared -Wl,-h,$$(@F)'
3807 enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3808 network_extralibs="-lsocket -lnsl"
3809 # When using suncc to build, the Solaris linker will mark
3810 # an executable with each instruction set encountered by
3811 # the Solaris assembler. As our libraries contain their own
3812 # guards for processor-specific code, instead suppress
3813 # generation of the HWCAPS ELF section on Solaris x86 only.
3814 enabled_all suncc x86 &&
3815 echo "hwcap_1 = OVERRIDE;" > mapfile &&
3816 add_ldflags -Wl,-M,mapfile
3817 nm_default='nm -P -g'
3818 version_script='-M'
3819 VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3820 ;;
3821 netbsd)
3822 disable symver
3823 oss_indev_extralibs="-lossaudio"
3824 oss_outdev_extralibs="-lossaudio"
3825 ;;
3826 openbsd|bitrig)
3827 disable symver
3828 SHFLAGS='-shared'
3829 SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3830 SLIB_INSTALL_LINKS=
3831 oss_indev_extralibs="-lossaudio"
3832 oss_outdev_extralibs="-lossaudio"
3833 ;;
3834 dragonfly)
3835 disable symver
3836 ;;
3837 freebsd)
3838 ;;
3839 bsd/os)
3840 add_extralibs -lpoll -lgnugetopt
3841 ;;
3842 darwin)
3843 enabled ppc && add_asflags -force_cpusubtype_ALL
3844 SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3845 enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3846 add_ldflags -Wl,-dynamic,-search_paths_first
3847 SLIBSUF=".dylib"
3848 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3849 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3850 objformat="macho"
3851 enabled x86_64 && objformat="macho64"
3852 enabled_any pic shared ||
3853 { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3854 check_header dispatch/dispatch.h &&
3855 add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3856 ;;
3857 msys*)
3858 die "Native MSYS builds are discouraged, please use the MINGW environment."
3859 ;;
3860 mingw32*|mingw64*)
3861 if test $target_os = "mingw32ce"; then
3862 disable network
3863 else
3864 target_os=mingw32
3865 fi
3866 LIBTARGET=i386
3867 if enabled x86_64; then
3868 LIBTARGET="i386:x86-64"
3869 elif enabled arm; then
3870 LIBTARGET=arm-wince
3871 fi
3872 check_ldflags -Wl,--nxcompat
3873 check_ldflags -Wl,--dynamicbase
3874 shlibdir_default="$bindir_default"
3875 SLIBPREF=""
3876 SLIBSUF=".dll"
3877 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3878 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3879 SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3880 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3881 SLIB_INSTALL_LINKS=
3882 SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3883 SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3884 SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3885 objformat="win32"
3886 dlltool="${cross_prefix}dlltool"
3887 ranlib=:
3888 enable dos_paths
3889 ;;
3890 win32|win64)
3891 disable symver
3892 if enabled shared; then
3893 # Link to the import library instead of the normal static library
3894 # for shared libs.
3895 LD_LIB='%.lib'
3896 # Cannot build both shared and static libs with MSVC or icl.
3897 disable static
3898 fi
3899 shlibdir_default="$bindir_default"
3900 SLIBPREF=""
3901 SLIBSUF=".dll"
3902 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3903 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3904 SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3905 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3906 SLIB_INSTALL_LINKS=
3907 SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3908 SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3909 SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3910 objformat="win32"
3911 ranlib=:
3912 enable dos_paths
3913 ;;
3914 cygwin*)
3915 target_os=cygwin
3916 shlibdir_default="$bindir_default"
3917 SLIBPREF="cyg"
3918 SLIBSUF=".dll"
3919 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3920 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3921 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3922 SLIB_INSTALL_LINKS=
3923 SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3924 SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3925 objformat="win32"
3926 enable dos_paths
3927 ;;
3928 *-dos|freedos|opendos)
3929 network_extralibs="-lsocket"
3930 objformat="coff"
3931 enable dos_paths
3932 add_cppflags -U__STRICT_ANSI__
3933 ;;
3934 linux)
3935 enable dv1394
3936 enable section_data_rel_ro
3937 ;;
3938 irix*)
3939 target_os=irix
3940 ranlib="echo ignoring ranlib"
3941 ;;
3942 os/2*)
3943 ln_s="cp -f"
3944 objformat="aout"
3945 add_cppflags -D_GNU_SOURCE
3946 add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3947 SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3948 LIBSUF="_s.a"
3949 SLIBPREF=""
3950 SLIBSUF=".dll"
3951 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3952 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3953 SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3954 echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3955 echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3956 echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3957 emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3958 SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3959 emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3960 SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3961 enable dos_paths
3962 ;;
3963 gnu/kfreebsd)
3964 add_cppflags -D_BSD_SOURCE
3965 ;;
3966 gnu)
3967 ;;
3968 qnx)
3969 add_cppflags -D_QNX_SOURCE
3970 network_extralibs="-lsocket"
3971 ;;
3972 symbian)
3973 SLIBSUF=".dll"
3974 enable dos_paths
3975 add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3976 add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3977 add_ldflags -Wl,--target1-abs,--no-undefined \
3978 -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3979 -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3980 add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3981 -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3982 -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3983 ;;
3984 osf1)
3985 add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3986 ;;
3987 minix)
3988 ;;
3989 plan9)
3990 add_cppflags -D_C99_SNPRINTF_EXTENSION \
3991 -D_REENTRANT_SOURCE \
3992 -D_RESEARCH_SOURCE \
3993 -DFD_SETSIZE=96 \
3994 -DHAVE_SOCK_OPTS
3995 add_compat strtod.o strtod=avpriv_strtod
3996 network_extralibs='-lbsd'
3997 exeobjs=compat/plan9/main.o
3998 cp_f='cp'
3999 ;;
4000 none)
4001 ;;
4002 *)
4003 die "Unknown OS '$target_os'."
4004 ;;
4005 esac
4006
4007 # determine libc flavour
4008
4009 probe_libc(){
4010 pfx=$1
4011 pfx_no_=${pfx%_}
4012 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4013 if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4014 eval ${pfx}libc_type=uclibc
4015 add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4016 elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4017 eval ${pfx}libc_type=glibc
4018 add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4019 # MinGW headers can be installed on Cygwin, so check for newlib first.
4020 elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4021 eval ${pfx}libc_type=newlib
4022 add_${pfx}cppflags -U__STRICT_ANSI__
4023 # MinGW64 is backwards compatible with MinGW32, so check for it first.
4024 elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4025 eval ${pfx}libc_type=mingw64
4026 add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4027 eval test \$${pfx_no_}cc_type = "gcc" &&
4028 add_${pfx}cppflags -D__printf__=__gnu_printf__
4029 elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION" ||
4030 check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4031 eval ${pfx}libc_type=mingw32
4032 check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4033 (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4034 die "ERROR: MinGW32 runtime version must be >= 3.15."
4035 add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4036 check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4037 add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4038 eval test \$${pfx_no_}cc_type = "gcc" &&
4039 add_${pfx}cppflags -D__printf__=__gnu_printf__
4040 elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4041 eval ${pfx}libc_type=msvcrt
4042 if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4043 if [ "$pfx" = host_ ]; then
4044 add_host_cppflags -Dsnprintf=_snprintf
4045 else
4046 add_compat strtod.o strtod=avpriv_strtod
4047 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf \
4048 _snprintf=avpriv_snprintf \
4049 vsnprintf=avpriv_vsnprintf
4050 fi
4051 fi
4052 add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4053 # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4054 # 0x601 by default unless something else is set by the user.
4055 # This can easily lead to us detecting functions only present
4056 # in such new versions and producing binaries requiring windows 7.0.
4057 # Therefore explicitly set the default to XP unless the user has
4058 # set something else on the command line.
4059 # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4060 # family. For these cases, configure is free to use any functions
4061 # found in the SDK headers by default. (Alternatively, we could force
4062 # _WIN32_WINNT to 0x0602 in that case.)
4063 check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4064 { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4065 #ifdef WINAPI_FAMILY
4066 #include <winapifamily.h>
4067 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4068 #error not desktop
4069 #endif
4070 #endif
4071 EOF
4072 if [ "$pfx" = "" ]; then
4073 check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4074 fi
4075 elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4076 eval ${pfx}libc_type=klibc
4077 elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4078 eval ${pfx}libc_type=bionic
4079 elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4080 eval ${pfx}libc_type=solaris
4081 add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4082 else
4083 eval ${pfx}libc_type=default
4084 add_${pfx}cppflags -D_DEFAULT_SOURCE
4085 fi
4086 }
4087
4088 probe_libc
4089 test -n "$libc_type" && enable libc_$libc_type
4090 probe_libc host_
4091 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4092
4093 case $libc_type in
4094 bionic)
4095 add_compat strtod.o strtod=avpriv_strtod
4096 ;;
4097 esac
4098
4099 # hacks for compiler/libc/os combinations
4100
4101 if enabled_all tms470 libc_glibc; then
4102 CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4103 add_cppflags -D__USER_LABEL_PREFIX__=
4104 add_cppflags -D__builtin_memset=memset
4105 add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4106 add_cflags -pds=48 # incompatible redefinition of macro
4107 fi
4108
4109 if enabled_all ccc libc_glibc; then
4110 add_ldflags -Wl,-z,now # calls to libots crash without this
4111 fi
4112
4113 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4114 add_cppflags '-I\$(SRC_PATH)/compat/float'
4115
4116 esc(){
4117 echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4118 }
4119
4120 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4121
4122 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4123
4124 set_default $PATHS_LIST
4125 set_default nm
4126
4127 # we need to build at least one lib type
4128 if ! enabled_any static shared; then
4129 cat <<EOF
4130 At least one library type must be built.
4131 Specify --enable-static to build the static libraries or --enable-shared to
4132 build the shared libraries as well. To only build the shared libraries specify
4133 --disable-static in addition to --enable-shared.
4134 EOF
4135 exit 1
4136 fi
4137
4138 disabled optimizations || check_cflags -fomit-frame-pointer
4139
4140 enable_weak_pic() {
4141 disabled pic && return
4142 enable pic
4143 add_cppflags -DPIC
4144 case "$target_os" in
4145 mingw*|cygwin*)
4146 ;;
4147 *)
4148 add_cflags -fPIC
4149 ;;
4150 esac
4151 add_asflags -fPIC
4152 }
4153
4154 enabled pic && enable_weak_pic
4155
4156 check_cc <<EOF || die "Symbol mangling check failed."
4157 int ff_extern;
4158 EOF
4159 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4160 extern_prefix=${sym%%ff_extern*}
4161
4162 check_cc <<EOF && enable_weak inline_asm
4163 void foo(void) { __asm__ volatile ("" ::); }
4164 EOF
4165
4166 _restrict=
4167 for restrict_keyword in restrict __restrict__ __restrict; do
4168 check_cc <<EOF && _restrict=$restrict_keyword && break
4169 void foo(char * $restrict_keyword p);
4170 EOF
4171 done
4172
4173 check_cc <<EOF && enable pragma_deprecated
4174 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4175 EOF
4176
4177 check_cc <<EOF && enable attribute_packed
4178 struct { int x; } __attribute__((packed)) x;
4179 EOF
4180
4181 check_cc <<EOF && enable attribute_may_alias
4182 union { int x; } __attribute__((may_alias)) x;
4183 EOF
4184
4185 check_cc <<EOF || die "endian test failed"
4186 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4187 EOF
4188 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4189
4190 check_gas() {
4191 log "check_gas using '$as' as AS"
4192 # :vararg is used on aarch64, arm and ppc altivec
4193 check_as <<EOF || return 1
4194 .macro m n, y:vararg=0
4195 \n: .int \y
4196 .endm
4197 m x
4198 EOF
4199 # .altmacro is only used in arm asm
4200 ! enabled arm || check_as <<EOF || return 1
4201 .altmacro
4202 EOF
4203 enable gnu_as
4204 return 0
4205 }
4206
4207 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4208 nogas=:
4209 enabled_any arm aarch64 && nogas=die
4210 enabled_all ppc altivec && nogas=warn
4211 as_noop=-v
4212
4213 case $as_type in
4214 arm*) gaspp_as_type=armasm; as_noop=-h ;;
4215 gcc) gaspp_as_type=gas ;;
4216 *) gaspp_as_type=$as_type ;;
4217 esac
4218
4219 [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4220
4221 check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4222 gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4223
4224 if ! check_gas ; then
4225 as=${gas:=$as}
4226 check_gas || \
4227 $nogas "GNU assembler not found, install/update gas-preprocessor"
4228 fi
4229
4230 check_as <<EOF && enable as_func
4231 .func test
4232 .endfunc
4233 EOF
4234 fi
4235
4236 check_inline_asm inline_asm_labels '"1:\n"'
4237
4238 if enabled aarch64; then
4239 enabled armv8 && check_insn armv8 'prfm pldl1strm, [x0]'
4240 # internal assembler in clang 3.3 does not support this instruction
4241 enabled neon && check_insn neon 'ext v0.8B, v0.8B, v1.8B, #1'
4242 enabled vfp && check_insn vfp 'fmadd d0, d0, d1, d2'
4243
4244 map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4245
4246 elif enabled alpha; then
4247
4248 check_cflags -mieee
4249
4250 elif enabled arm; then
4251
4252 enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4253 check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4254 enabled thumb && check_cflags -mthumb || check_cflags -marm
4255
4256 if check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4257 enable vfp_args
4258 elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4259 enable vfp_args
4260 elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4261 case "${cross_prefix:-$cc}" in
4262 *hardfloat*) enable vfp_args; fpabi=vfp ;;
4263 *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4264 __asm__ (".eabi_attribute 28, 1");
4265 int main(void) { return 0; }
4266 EOF
4267 esac
4268 warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4269 fi
4270
4271 enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4272 enabled armv6 && check_insn armv6 'sadd16 r0, r0, r0'
4273 enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4274 enabled neon && check_insn neon 'vadd.i16 q0, q0, q0'
4275 enabled vfp && check_insn vfp 'fadds s0, s0, s0'
4276 enabled vfpv3 && check_insn vfpv3 'vmov.f32 s0, #1.0'
4277
4278 [ $target_os = linux ] || [ $target_os = android ] ||
4279 map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4280 $ARCH_EXT_LIST_ARM
4281
4282 check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4283
4284 check_as <<EOF && enable as_dn_directive
4285 ra .dn d0.i16
4286 .unreq ra
4287 EOF
4288 check_as <<EOF && enable as_fpu_directive
4289 .fpu neon
4290 EOF
4291
4292 # llvm's integrated assembler supports .object_arch from llvm 3.5
4293 [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4294 .object_arch armv4
4295 EOF
4296
4297 [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4298
4299 elif enabled mips; then
4300
4301 check_inline_asm loongson '"dmult.g $1, $2, $3"'
4302
4303 # make sure that only an instruction set is enabled
4304 disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4305
4306 if enabled mips64; then
4307 check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4308 check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4309 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4310 else
4311 check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4312 check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4313 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4314 fi
4315
4316 elif enabled parisc; then
4317
4318 if enabled gcc; then
4319 case $($cc -dumpversion) in
4320 4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4321 esac
4322 fi
4323
4324 elif enabled ppc; then
4325
4326 enable local_aligned_8 local_aligned_16 local_aligned_32
4327
4328 check_inline_asm dcbzl '"dcbzl 0, %0" :: "r"(0)'
4329 check_inline_asm ibm_asm '"add 0, 0, 0"'
4330 check_inline_asm ppc4xx '"maclhw r10, r11, r12"'
4331 check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4332
4333 # AltiVec flags: The FSF version of GCC differs from the Apple version
4334 if enabled altivec; then
4335 check_cflags -maltivec -mabi=altivec &&
4336 { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4337 check_cflags -faltivec
4338
4339 # check if our compiler supports Motorola AltiVec C API
4340 check_cc <<EOF || disable altivec
4341 $inc_altivec_h
4342 int main(void) {
4343 vector signed int v1 = (vector signed int) { 0 };
4344 vector signed int v2 = (vector signed int) { 1 };
4345 v1 = vec_add(v1, v2);
4346 return 0;
4347 }
4348 EOF
4349
4350 enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4351 fi
4352
4353 if enabled vsx; then
4354 check_cflags -mvsx &&
4355 check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4356 fi
4357
4358 if enabled power8; then
4359 check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4360 fi
4361
4362 elif enabled x86; then
4363
4364 check_builtin rdtsc intrin.h "__rdtsc()"
4365 check_builtin mm_empty mmintrin.h "_mm_empty()"
4366
4367 enable local_aligned_8 local_aligned_16 local_aligned_32
4368
4369 # check whether EBP is available on x86
4370 # As 'i' is stored on the stack, this program will crash
4371 # if the base pointer is used to access it because the
4372 # base pointer is cleared in the inline assembly code.
4373 check_exec_crash <<EOF && enable ebp_available
4374 volatile int i=0;
4375 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4376 return i;
4377 EOF
4378 <