build: Add separate flags for checkheaders targets
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18 echo "Trying shell $1"
19 type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30 echo "Broken shell detected. Trying alternatives."
31 export FF_CONF_EXEC
32 if test "0$FF_CONF_EXEC" -lt 1; then
33 FF_CONF_EXEC=1
34 try_exec bash "$0" "$@"
35 fi
36 if test "0$FF_CONF_EXEC" -lt 2; then
37 FF_CONF_EXEC=2
38 try_exec ksh "$0" "$@"
39 fi
40 if test "0$FF_CONF_EXEC" -lt 3; then
41 FF_CONF_EXEC=3
42 try_exec /usr/xpg4/bin/sh "$0" "$@"
43 fi
44 echo "No compatible shell script interpreter found."
45 echo "This configure script requires a POSIX-compatible shell"
46 echo "such as bash or ksh."
47 echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48 echo "Instead, install a working POSIX-compatible shell."
49 echo "Disabling this configure test will create a broken Libav."
50 if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51 echo "This bash version ($BASH_VERSION) is broken on your platform."
52 echo "Upgrade to a later version if available."
53 fi
54 exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60 cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65 --help print this message
66 --quiet Suppress showing informative output
67 --list-decoders show all available decoders
68 --list-encoders show all available encoders
69 --list-hwaccels show all available hardware accelerators
70 --list-demuxers show all available demuxers
71 --list-muxers show all available muxers
72 --list-parsers show all available parsers
73 --list-protocols show all available protocols
74 --list-bsfs show all available bitstream filters
75 --list-indevs show all available input devices
76 --list-outdevs show all available output devices
77 --list-filters show all available filters
78
79 Standard options:
80 --logfile=FILE log tests and output to FILE [config.log]
81 --disable-logging do not log configure debug information
82 --prefix=PREFIX install in PREFIX [$prefix_default]
83 --bindir=DIR install binaries in DIR [PREFIX/bin]
84 --datadir=DIR install data files in DIR [PREFIX/share/avconv]
85 --docdir=DIR install documentation in DIR [PREFIX/share/doc/libav]
86 --libdir=DIR install libs in DIR [PREFIX/lib]
87 --shlibdir=DIR install shared libs in DIR [PREFIX/lib]
88 --incdir=DIR install includes in DIR [PREFIX/include]
89 --mandir=DIR install man page in DIR [PREFIX/share/man]
90 --enable-rpath use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93 --enable-gpl allow use of GPL code, the resulting libs
94 and binaries will be under GPL [no]
95 --enable-version3 upgrade (L)GPL to version 3 [no]
96 --enable-nonfree allow use of nonfree code, the resulting libs
97 and binaries will be unredistributable [no]
98
99 Configuration options:
100 --disable-static do not build static libraries [no]
101 --enable-shared build shared libraries [no]
102 --enable-small optimize for size instead of speed
103 --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104 --enable-gray enable full grayscale support (slower color)
105 --disable-swscale-alpha disable alpha channel support in swscale
106 --disable-all disable building components, libraries and programs
107
108 Program options:
109 --disable-programs do not build command line programs
110 --disable-avconv disable avconv build
111 --disable-avplay disable avplay build
112 --disable-avprobe disable avprobe build
113 --disable-avserver deprecated, does nothing
114
115 Component options:
116 --disable-doc do not build documentation
117 --disable-pod2man do not build manual pages
118 --disable-texi2html do not build HTML documentation
119 --disable-avdevice disable libavdevice build
120 --disable-avcodec disable libavcodec build
121 --disable-avformat disable libavformat build
122 --disable-avutil disable libavutil build
123 --disable-swscale disable libswscale build
124 --disable-avfilter disable video filter support [no]
125 --disable-avresample disable libavresample build [no]
126 --disable-pthreads disable pthreads [auto]
127 --disable-w32threads disable Win32 threads [auto]
128 --disable-network disable network support [no]
129 --disable-dct disable DCT code
130 --disable-error-resilience disable error resilience code
131 --disable-lsp disable LSP code
132 --disable-lzo disable LZO decoder code
133 --disable-mdct disable MDCT code
134 --disable-rdft disable RDFT code
135 --disable-fft disable FFT code
136 --disable-faan disable floating point AAN (I)DCT code
137
138 Individual component options:
139 --disable-everything disable all components listed below
140 --disable-encoder=NAME disable encoder NAME
141 --enable-encoder=NAME enable encoder NAME
142 --disable-encoders disable all encoders
143 --disable-decoder=NAME disable decoder NAME
144 --enable-decoder=NAME enable decoder NAME
145 --disable-decoders disable all decoders
146 --disable-hwaccel=NAME disable hwaccel NAME
147 --enable-hwaccel=NAME enable hwaccel NAME
148 --disable-hwaccels disable all hwaccels
149 --disable-muxer=NAME disable muxer NAME
150 --enable-muxer=NAME enable muxer NAME
151 --disable-muxers disable all muxers
152 --disable-demuxer=NAME disable demuxer NAME
153 --enable-demuxer=NAME enable demuxer NAME
154 --disable-demuxers disable all demuxers
155 --enable-parser=NAME enable parser NAME
156 --disable-parser=NAME disable parser NAME
157 --disable-parsers disable all parsers
158 --enable-bsf=NAME enable bitstream filter NAME
159 --disable-bsf=NAME disable bitstream filter NAME
160 --disable-bsfs disable all bitstream filters
161 --enable-protocol=NAME enable protocol NAME
162 --disable-protocol=NAME disable protocol NAME
163 --disable-protocols disable all protocols
164 --enable-indev=NAME enable input device NAME
165 --disable-indev=NAME disable input device NAME
166 --disable-indevs disable input devices
167 --enable-outdev=NAME enable output device NAME
168 --disable-outdev=NAME disable output device NAME
169 --disable-outdevs disable output devices
170 --disable-devices disable all devices
171 --enable-filter=NAME enable filter NAME
172 --disable-filter=NAME disable filter NAME
173 --disable-filters disable all filters
174
175 External library support:
176
177 Using any of the following switches will allow Libav to link to the
178 corresponding external library. All the components depending on that library
179 will become enabled, if all their other dependencies are met and they are not
180 explicitly disabled. E.g. --enable-libwavpack will enable linking to
181 libwavpack and allow the libwavpack encoder to be built, unless it is
182 specifically disabled with --disable-encoder=libwavpack.
183
184 Note that only the system libraries are auto-detected. All the other external
185 libraries must be explicitly enabled.
186
187 Also note that the following help text describes the purpose of the libraries
188 themselves, not all their features will necessarily be usable by Libav.
189
190 --enable-avisynth video frameserver
191 --enable-bzlib bzip2 compression [autodetect]
192 --enable-frei0r video filtering plugins
193 --enable-gnutls crypto
194 --enable-libbs2b Bauer stereophonic-to-binaural DSP
195 --enable-libcdio audio CD input
196 --enable-libdc1394 IEEE 1394/Firewire camera input
197 --enable-libdcadec DCA audio decoding
198 --enable-libfaac AAC audio encoding
199 --enable-libfdk-aac AAC audio encoding/decoding
200 --enable-libfontconfig font configuration and management
201 --enable-libfreetype font rendering
202 --enable-libgsm GSM audio encoding/decoding
203 --enable-libhdcd HDCD decoding filter
204 --enable-libilbc ILBC audio encoding/decoding
205 --enable-libkvazaar HEVC video encoding
206 --enable-libmp3lame MP3 audio encoding
207 --enable-libopencore-amrnb AMR-NB audio encoding/decoding
208 --enable-libopencore-amrwb AMR-WB audio decoding
209 --enable-libopencv computer vision
210 --enable-libopenh264 H.264 video encoding/decoding
211 --enable-libopenjpeg JPEG 2000 image encoding/decoding
212 --enable-libopus Opus audio encoding/decoding
213 --enable-libpulse Pulseaudio sound server
214 --enable-librtmp RTMP streaming
215 --enable-libschroedinger Dirac video encoding/decoding
216 --enable-libsnappy snappy compression
217 --enable-libspeex Speex audio encoding/decoding
218 --enable-libtheora Theora video encoding/decoding
219 --enable-libtwolame MP2 audio encoding
220 --enable-libvo-aacenc AAC audio encoding
221 --enable-libvo-amrwbenc AMR-WB audio encoding
222 --enable-libvorbis Vorbis audio encoding/decoding
223 --enable-libvpx VP* video encoding/decoding
224 --enable-libwavpack Wavpack audio encoding/decoding
225 --enable-libwebp WebP image encoding/decoding
226 --enable-libx264 H.264 video encoding
227 --enable-libx265 HEVC video encoding
228 --enable-libxavs Chinese AVS video encoding
229 --enable-libxcb X window system protocol communication
230 --enable-libxcb-shm X11 shm communication [auto]
231 --enable-libxcb-xfixes X11 mouse rendering [auto]
232 --enable-libxvid MPEG-4 ASP video encoding
233 --enable-openssl crypto
234 --enable-zlib compression [autodetect]
235
236 The following libraries provide various hardware acceleration features:
237 --enable-cuda Nvidia CUDA (dynamically linked)
238 --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
239 --enable-dxva2 Microsoft DirectX 9 video acceleration [auto]
240 --enable-libmfx Intel MediaSDK (AKA Quick Sync Video)
241 --enable-libnpp Nvidia CUDA processing
242 --enable-mmal Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
243 --enable-nvenc Nvidia video encoding
244 --enable-omx OpenMAX IL
245 --enable-omx-rpi OpenMAX IL for Raspberry Pi
246 --enable-vaapi Video Acceleration API (mainly Unix/Intel)
247 --enable-vda Apple Video Decode Acceleration [auto]
248 --enable-vdpau Nvidia Video Decode and Presentation API for Unix [auto]
249
250 Toolchain options:
251 --arch=ARCH select architecture [$arch]
252 --cpu=CPU select the minimum required CPU (affects
253 instruction selection, may crash on older CPUs)
254 --cross-prefix=PREFIX use PREFIX for compilation tools [$cross_prefix]
255 --enable-cross-compile assume a cross-compiler is used
256 --sysroot=PATH root of cross-build tree
257 --sysinclude=PATH location of cross-build system headers
258 --target-os=OS compiler targets OS [$target_os]
259 --target-exec=CMD command to run executables on target
260 --target-path=DIR path to view of build directory on target
261 --target-samples=DIR path to samples directory on target
262 --toolchain=NAME set tool defaults according to NAME
263 --nm=NM use nm tool
264 --ar=AR use archive tool AR [$ar_default]
265 --as=AS use assembler AS [$as_default]
266 --cc=CC use C compiler CC [$cc_default]
267 --objcc=OCC use ObjC compiler OCC [$cc_default]
268 --dep-cc=DEPCC use dependency generator DEPCC [$cc_default]
269 --ld=LD use linker LD
270 --pkg-config=PKGCONFIG use pkg-config tool PKGCONFIG [$pkg_config_default]
271 --pkg-config-flags=FLAGS pass additional flags to pkgconf []
272 --host-cc=HOSTCC use host C compiler HOSTCC
273 --host-cflags=HCFLAGS use HCFLAGS when compiling for host
274 --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
275 --host-ld=HOSTLD use host linker HOSTLD
276 --host-ldflags=HLDFLAGS use HLDFLAGS when linking for host
277 --host-libs=HLIBS use libs HLIBS when linking for host
278 --host-os=OS compiler host OS [$target_os]
279 --extra-cflags=ECFLAGS add ECFLAGS to CFLAGS [$CFLAGS]
280 --extra-objcflags=FLAGS add FLAGS to OBJCFLAGS [$CFLAGS]
281 --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
282 --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
283 --extra-libs=ELIBS add ELIBS [$ELIBS]
284 --extra-version=STRING version string suffix []
285 --optflags=OPTFLAGS override optimization-related compiler flags
286 --build-suffix=SUFFIX library name suffix []
287 --enable-pic build position-independent code
288 --enable-thumb compile for Thumb instruction set
289 --enable-lto use link-time optimization
290 --env="ENV=override" override the environment variables
291
292 Advanced options (experts only):
293 --malloc-prefix=PREFIX prefix malloc and related names with PREFIX
294 --custom-allocator=NAME use a supported custom allocator
295 --disable-symver disable symbol versioning
296 --enable-hardcoded-tables use hardcoded tables instead of runtime generation
297 --disable-safe-bitstream-reader
298 disable buffer boundary checking in bitreaders
299 (faster, but may crash)
300 --enable-sram allow use of on-chip SRAM
301
302 Optimization options (experts only):
303 --disable-asm disable all assembly optimizations
304 --disable-altivec disable AltiVec optimizations
305 --disable-vsx disable VSX optimizations
306 --disable-power8 disable POWER8 optimizations
307 --disable-amd3dnow disable 3DNow! optimizations
308 --disable-amd3dnowext disable 3DNow! extended optimizations
309 --disable-mmx disable MMX optimizations
310 --disable-mmxext disable MMXEXT optimizations
311 --disable-sse disable SSE optimizations
312 --disable-sse2 disable SSE2 optimizations
313 --disable-sse3 disable SSE3 optimizations
314 --disable-ssse3 disable SSSE3 optimizations
315 --disable-sse4 disable SSE4 optimizations
316 --disable-sse42 disable SSE4.2 optimizations
317 --disable-avx disable AVX optimizations
318 --disable-xop disable XOP optimizations
319 --disable-fma3 disable FMA3 optimizations
320 --disable-fma4 disable FMA4 optimizations
321 --disable-avx2 disable AVX2 optimizations
322 --disable-armv5te disable armv5te optimizations
323 --disable-armv6 disable armv6 optimizations
324 --disable-armv6t2 disable armv6t2 optimizations
325 --disable-vfp disable VFP optimizations
326 --disable-neon disable NEON optimizations
327 --disable-inline-asm disable use of inline assembly
328 --disable-yasm disable use of nasm/yasm assembly
329
330 Developer options (useful when working on Libav itself):
331 --disable-debug disable debugging symbols
332 --enable-debug=LEVEL set the debug level [$debuglevel]
333 --disable-optimizations disable compiler optimizations
334 --enable-extra-warnings enable more compiler warnings
335 --samples=PATH location of test samples for FATE, if not set use
336 \$LIBAV_SAMPLES at make invocation time.
337 --enable-neon-clobber-test check NEON registers for clobbering (should be
338 used only for debugging purposes)
339 --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
340 should be used only for debugging purposes)
341 --enable-random randomly enable/disable components
342 --disable-random
343 --enable-random=LIST randomly enable/disable specific components or
344 --disable-random=LIST component groups. LIST is a comma-separated list
345 of NAME[:PROB] entries where NAME is a component
346 (group) and PROB the probability associated with
347 NAME (default 0.5).
348 --random-seed=VALUE seed value for --enable/disable-random
349 --disable-valgrind-backtrace do not print a backtrace under Valgrind
350 (only applies to --disable-optimizations builds)
351
352 NOTE: Object files are built at the place where configure is launched.
353 EOF
354 exit 0
355 }
356
357 quotes='""'
358
359 log(){
360 echo "$@" >> $logfile
361 }
362
363 log_file(){
364 log BEGIN $1
365 i=1
366 while read line; do
367 printf '%5s %s\n' "${i}" "${line}"
368 i=$(($i+1))
369 done < $1 >> $logfile
370 log END $1
371 }
372
373 echolog(){
374 log "$@"
375 echo "$@"
376 }
377
378 warn(){
379 log "WARNING: $*"
380 WARNINGS="${WARNINGS}WARNING: $*\n"
381 }
382
383 die(){
384 echolog "$@"
385 cat <<EOF
386
387 If you think configure made a mistake, make sure you are using the latest
388 version from Git. If the latest version fails, report the problem to the
389 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
390 EOF
391 if disabled logging; then
392 cat <<EOF
393 Rerun configure with logging enabled (do not use --disable-logging), and
394 include the log this produces with your report.
395 EOF
396 else
397 cat <<EOF
398 Include the log file "$logfile" produced by configure as this will help
399 solving the problem.
400 EOF
401 fi
402 exit 1
403 }
404
405 # Avoid locale weirdness, besides we really just want to translate ASCII.
406 toupper(){
407 echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
408 }
409
410 tolower(){
411 echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
412 }
413
414 c_escape(){
415 echo "$*" | sed 's/["\\]/\\\0/g'
416 }
417
418 sh_quote(){
419 v=$(echo "$1" | sed "s/'/'\\\\''/g")
420 test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
421 echo "$v"
422 }
423
424 cleanws(){
425 echo "$@" | sed 's/^ *//;s/ */ /g;s/ *$//'
426 }
427
428 filter(){
429 pat=$1
430 shift
431 for v; do
432 eval "case $v in $pat) printf '%s ' $v ;; esac"
433 done
434 }
435
436 filter_out(){
437 pat=$1
438 shift
439 for v; do
440 eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
441 done
442 }
443
444 map(){
445 m=$1
446 shift
447 for v; do eval $m; done
448 }
449
450 add_suffix(){
451 suffix=$1
452 shift
453 for v; do echo ${v}${suffix}; done
454 }
455
456 set_all(){
457 value=$1
458 shift
459 for var in $*; do
460 eval $var=$value
461 done
462 }
463
464 set_weak(){
465 value=$1
466 shift
467 for var; do
468 eval : \${$var:=$value}
469 done
470 }
471
472 sanitize_var_name(){
473 echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
474 }
475
476 set_safe(){
477 var=$1
478 shift
479 eval $(sanitize_var_name "$var")='$*'
480 }
481
482 get_safe(){
483 eval echo \$$(sanitize_var_name "$1")
484 }
485
486 pushvar(){
487 for pvar in $*; do
488 eval level=\${${pvar}_level:=0}
489 eval ${pvar}_${level}="\$$pvar"
490 eval ${pvar}_level=$(($level+1))
491 done
492 }
493
494 popvar(){
495 for pvar in $*; do
496 eval level=\${${pvar}_level:-0}
497 test $level = 0 && continue
498 eval level=$(($level-1))
499 eval $pvar="\${${pvar}_${level}}"
500 eval ${pvar}_level=$level
501 eval unset ${pvar}_${level}
502 done
503 }
504
505 enable(){
506 set_all yes $*
507 }
508
509 disable(){
510 set_all no $*
511 }
512
513 enable_weak(){
514 set_weak yes $*
515 }
516
517 disable_weak(){
518 set_weak no $*
519 }
520
521 enable_safe(){
522 for var; do
523 enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
524 done
525 }
526
527 disable_safe(){
528 for var; do
529 disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
530 done
531 }
532
533 do_enable_deep(){
534 for var; do
535 enabled $var && continue
536 eval sel="\$${var}_select"
537 eval sgs="\$${var}_suggest"
538 pushvar var sgs
539 enable_deep $sel
540 popvar sgs
541 enable_deep_weak $sgs
542 popvar var
543 done
544 }
545
546 enable_deep(){
547 do_enable_deep $*
548 enable $*
549 }
550
551 enable_deep_weak(){
552 for var; do
553 disabled $var && continue
554 pushvar var
555 do_enable_deep $var
556 popvar var
557 enable_weak $var
558 done
559 }
560
561 enabled(){
562 test "${1#!}" = "$1" && op== || op=!=
563 eval test "x\$${1#!}" $op "xyes"
564 }
565
566 disabled(){
567 test "${1#!}" = "$1" && op== || op=!=
568 eval test "x\$${1#!}" $op "xno"
569 }
570
571 enabled_all(){
572 for opt; do
573 enabled $opt || return 1
574 done
575 }
576
577 disabled_all(){
578 for opt; do
579 disabled $opt || return 1
580 done
581 }
582
583 enabled_any(){
584 for opt; do
585 enabled $opt && return 0
586 done
587 }
588
589 disabled_any(){
590 for opt; do
591 disabled $opt && return 0
592 done
593 return 1
594 }
595
596 set_default(){
597 for opt; do
598 eval : \${$opt:=\$${opt}_default}
599 done
600 }
601
602 is_in(){
603 value=$1
604 shift
605 for var in $*; do
606 [ $var = $value ] && return 0
607 done
608 return 1
609 }
610
611 do_check_deps(){
612 for cfg; do
613 cfg="${cfg#!}"
614 enabled ${cfg}_checking && die "Circular dependency for $cfg."
615 disabled ${cfg}_checking && continue
616 enable ${cfg}_checking
617 append allopts $cfg
618
619 eval dep_all="\$${cfg}_deps"
620 eval dep_any="\$${cfg}_deps_any"
621 eval dep_sel="\$${cfg}_select"
622 eval dep_sgs="\$${cfg}_suggest"
623 eval dep_ifa="\$${cfg}_if"
624 eval dep_ifn="\$${cfg}_if_any"
625
626 pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
627 do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
628 popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
629
630 [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
631 [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
632 enabled_all $dep_all || disable $cfg
633 enabled_any $dep_any || disable $cfg
634 disabled_any $dep_sel && disable $cfg
635
636 if enabled $cfg; then
637 enable_deep $dep_sel
638 enable_deep_weak $dep_sgs
639 fi
640
641 disable ${cfg}_checking
642 done
643 }
644
645 check_deps(){
646 unset allopts
647
648 do_check_deps "$@"
649
650 for cfg in $allopts; do
651 enabled $cfg || continue
652 eval dep_extralibs="\$${cfg}_extralibs"
653 test -n "$dep_extralibs" && add_extralibs $dep_extralibs
654 done
655 }
656
657 print_config(){
658 pfx=$1
659 files=$2
660 shift 2
661 map 'eval echo "$v \${$v:-no}"' "$@" |
662 awk "BEGIN { split(\"$files\", files) }
663 {
664 c = \"$pfx\" toupper(\$1);
665 v = \$2;
666 sub(/yes/, 1, v);
667 sub(/no/, 0, v);
668 for (f in files) {
669 file = files[f];
670 if (file ~ /\\.h\$/) {
671 printf(\"#define %s %d\\n\", c, v) >>file;
672 } else if (file ~ /\\.asm\$/) {
673 printf(\"%%define %s %d\\n\", c, v) >>file;
674 } else if (file ~ /\\.mak\$/) {
675 n = -v ? \"\" : \"!\";
676 printf(\"%s%s=yes\\n\", n, c) >>file;
677 }
678 }
679 }"
680 }
681
682 print_enabled(){
683 suf=$1
684 shift
685 for v; do
686 enabled $v && printf "%s\n" ${v%$suf}
687 done
688 }
689
690 append(){
691 var=$1
692 shift
693 eval "$var=\"\$$var $*\""
694 }
695
696 prepend(){
697 var=$1
698 shift
699 eval "$var=\"$* \$$var\""
700 }
701
702 unique(){
703 var=$1
704 uniq_list=""
705 for tok in $(eval echo \$$var); do
706 uniq_list="$(filter_out $tok $uniq_list) $tok"
707 done
708 eval "$var=\"${uniq_list}\""
709 }
710
711 add_cppflags(){
712 append CPPFLAGS "$@"
713 }
714
715 add_cflags(){
716 append CFLAGS $($cflags_filter "$@")
717 }
718
719 add_asflags(){
720 append ASFLAGS $($asflags_filter "$@")
721 }
722
723 add_objcflags(){
724 append OBJCFLAGS $($objcflags_filter "$@")
725 }
726
727 add_ldflags(){
728 append LDFLAGS $($ldflags_filter "$@")
729 }
730
731 add_ldexeflags(){
732 append LDEXEFLAGS $($ldflags_filter "$@")
733 }
734
735 add_stripflags(){
736 append STRIPFLAGS "$@"
737 }
738
739 add_extralibs(){
740 prepend extralibs $($ldflags_filter "$@")
741 }
742
743 add_host_cppflags(){
744 append host_cppflags "$@"
745 }
746
747 add_host_cflags(){
748 append host_cflags $($host_cflags_filter "$@")
749 }
750
751 add_host_ldflags(){
752 append host_ldflags $($host_ldflags_filter "$@")
753 }
754
755 add_compat(){
756 append compat_objs $1
757 shift
758 map 'add_cppflags -D$v' "$@"
759 }
760
761 check_cmd(){
762 log "$@"
763 "$@" >> $logfile 2>&1
764 }
765
766 cc_o(){
767 eval printf '%s\\n' $CC_O
768 }
769
770 cc_e(){
771 eval printf '%s\\n' $CC_E
772 }
773
774 check_cc(){
775 log check_cc "$@"
776 cat > $TMPC
777 log_file $TMPC
778 check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
779 }
780
781 check_objcc(){
782 log check_objcc "$@"
783 cat > $TMPC
784 log_file $TMPC
785 check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
786 }
787
788 check_cpp(){
789 log check_cpp "$@"
790 cat > $TMPC
791 log_file $TMPC
792 check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
793 }
794
795 as_o(){
796 eval printf '%s\\n' $AS_O
797 }
798
799 check_as(){
800 log check_as "$@"
801 cat > $TMPS
802 log_file $TMPS
803 check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
804 }
805
806 check_inline_asm(){
807 log check_inline_asm "$@"
808 name="$1"
809 code="$2"
810 shift 2
811 disable $name
812 check_cc "$@" <<EOF && enable $name
813 void foo(void){ __asm__ volatile($code); }
814 EOF
815 }
816
817 check_insn(){
818 log check_insn "$@"
819 check_inline_asm ${1}_inline "\"$2\""
820 echo "$2" | check_as && enable ${1}_external || disable ${1}_external
821 }
822
823 check_yasm(){
824 log check_yasm "$@"
825 echo "$1" > $TMPS
826 log_file $TMPS
827 shift 1
828 check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
829 }
830
831 ld_o(){
832 eval printf '%s\\n' $LD_O
833 }
834
835 check_ld(){
836 log check_ld "$@"
837 flags=$(filter_out '-l*' "$@")
838 libs=$(filter '-l*' "$@")
839 check_cc $($cflags_filter $flags) || return
840 flags=$($ldflags_filter $flags)
841 libs=$($ldflags_filter $libs)
842 check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
843 }
844
845 print_include(){
846 hdr=$1
847 test "${hdr%.h}" = "${hdr}" &&
848 echo "#include $hdr" ||
849 echo "#include <$hdr>"
850 }
851
852 check_code(){
853 log check_code "$@"
854 check=$1
855 headers=$2
856 code=$3
857 shift 3
858 {
859 for hdr in $headers; do
860 print_include $hdr
861 done
862 echo "int main(void) { $code; return 0; }"
863 } | check_$check "$@"
864 }
865
866 check_cppflags(){
867 log check_cppflags "$@"
868 check_cpp "$@" <<EOF && append CPPFLAGS "$@"
869 int x;
870 EOF
871 }
872
873 test_cflags(){
874 log test_cflags "$@"
875 set -- $($cflags_filter "$@")
876 check_cc "$@" <<EOF
877 int x;
878 EOF
879 }
880
881 check_cflags(){
882 log check_cflags "$@"
883 test_cflags "$@" && add_cflags "$@"
884 }
885
886 test_objcflags(){
887 log test_objcflags "$@"
888 set -- $($objcflags_filter "$@")
889 check_objcc "$@" <<EOF
890 int x;
891 EOF
892 }
893
894 check_objcflags(){
895 log check_objcflags "$@"
896 test_objcflags "$@" && add_objcflags "$@"
897 }
898
899 test_ldflags(){
900 log test_ldflags "$@"
901 check_ld "$@" <<EOF
902 int main(void){ return 0; }
903 EOF
904 }
905
906 check_ldflags(){
907 log check_ldflags "$@"
908 test_ldflags "$@" && add_ldflags "$@"
909 }
910
911 test_stripflags(){
912 log test_stripflags "$@"
913 # call check_cc to get a fresh TMPO
914 check_cc <<EOF
915 int main(void) { return 0; }
916 EOF
917 check_cmd $strip $STRIPFLAGS "$@" $TMPO
918 }
919
920 check_stripflags(){
921 log check_stripflags "$@"
922 test_stripflags "$@" && add_stripflags "$@"
923 }
924
925 check_header(){
926 log check_header "$@"
927 header=$1
928 shift
929 disable_safe $header
930 check_cpp "$@" <<EOF && enable_safe $header
931 #include <$header>
932 int x;
933 EOF
934 }
935
936 check_func(){
937 log check_func "$@"
938 func=$1
939 shift
940 disable $func
941 check_ld "$@" <<EOF && enable $func
942 extern int $func();
943 int main(void){ $func(); }
944 EOF
945 }
946
947 check_mathfunc(){
948 log check_mathfunc "$@"
949 func=$1
950 narg=$2
951 shift 2
952 test $narg = 2 && args="f, g" || args="f"
953 disable $func
954 check_ld "$@" <<EOF && enable $func
955 #include <math.h>
956 float foo(float f, float g) { return $func($args); }
957 int main(void){ return 0; }
958 EOF
959 }
960
961 check_func_headers(){
962 log check_func_headers "$@"
963 headers=$1
964 funcs=$2
965 shift 2
966 {
967 for hdr in $headers; do
968 print_include $hdr
969 done
970 for func in $funcs; do
971 echo "long check_$func(void) { return (long) $func; }"
972 done
973 echo "int main(void) { return 0; }"
974 } | check_ld "$@" && enable $funcs && enable_safe $headers
975 }
976
977 check_cpp_condition(){
978 log check_cpp_condition "$@"
979 header=$1
980 condition=$2
981 shift 2
982 check_cpp "$@" <<EOF
983 #include <$header>
984 #if !($condition)
985 #error "unsatisfied condition: $condition"
986 #endif
987 EOF
988 }
989
990 test_cflags_cpp(){
991 log test_cflags_cpp "$@"
992 flags=$1
993 condition=$2
994 shift 2
995 set -- $($cflags_filter "$flags")
996 check_cpp "$@" <<EOF
997 #if !($condition)
998 #error "unsatisfied condition: $condition"
999 #endif
1000 EOF
1001 }
1002
1003 check_lib(){
1004 log check_lib "$@"
1005 headers="$1"
1006 funcs="$2"
1007 shift 2
1008 check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1009 }
1010
1011 check_pkg_config(){
1012 log check_pkg_config "$@"
1013 pkg="$1"
1014 headers="$2"
1015 funcs="$3"
1016 shift 3
1017 check_cmd $pkg_config --exists --print-errors $pkg || return
1018 pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1019 pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1020 check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1021 set_safe "${pkg}_cflags" $pkg_cflags &&
1022 set_safe "${pkg}_libs" $pkg_libs
1023 }
1024
1025 check_exec(){
1026 check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1027 }
1028
1029 check_exec_crash(){
1030 log check_exec_crash "$@"
1031 code=$(cat)
1032
1033 # exit() is not async signal safe. _Exit (C99) and _exit (POSIX)
1034 # are safe but may not be available everywhere. Thus we use
1035 # raise(SIGTERM) instead. The check is run in a subshell so we
1036 # can redirect the "Terminated" message from the shell. SIGBUS
1037 # is not defined by standard C so it is used conditionally.
1038
1039 (check_exec "$@") >> $logfile 2>&1 <<EOF
1040 #include <signal.h>
1041 static void sighandler(int sig){
1042 raise(SIGTERM);
1043 }
1044 int foo(void){
1045 $code
1046 }
1047 int (*func_ptr)(void) = foo;
1048 int main(void){
1049 signal(SIGILL, sighandler);
1050 signal(SIGFPE, sighandler);
1051 signal(SIGSEGV, sighandler);
1052 #ifdef SIGBUS
1053 signal(SIGBUS, sighandler);
1054 #endif
1055 return func_ptr();
1056 }
1057 EOF
1058 }
1059
1060 check_type(){
1061 log check_type "$@"
1062 headers=$1
1063 type=$2
1064 shift 2
1065 disable_safe "$type"
1066 check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1067 }
1068
1069 check_struct(){
1070 log check_struct "$@"
1071 headers=$1
1072 struct=$2
1073 member=$3
1074 shift 3
1075 disable_safe "${struct}_${member}"
1076 check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1077 enable_safe "${struct}_${member}"
1078 }
1079
1080 check_builtin(){
1081 log check_builtin "$@"
1082 name=$1
1083 headers=$2
1084 builtin=$3
1085 shift 3
1086 disable "$name"
1087 check_code ld "$headers" "$builtin" "$@" && enable "$name"
1088 }
1089
1090 check_compile_assert(){
1091 log check_compile_assert "$@"
1092 name=$1
1093 headers=$2
1094 condition=$3
1095 shift 3
1096 disable "$name"
1097 check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1098 }
1099
1100 require(){
1101 log require "$@"
1102 name="$1"
1103 headers="$2"
1104 func="$3"
1105 shift 3
1106 check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1107 }
1108
1109 require_pkg_config(){
1110 log require_pkg_config "$@"
1111 pkg="$1"
1112 check_pkg_config "$@" || die "ERROR: $pkg not found"
1113 add_cflags $(get_safe "${pkg}_cflags")
1114 add_extralibs $(get_safe "${pkg}_libs")
1115 }
1116
1117 hostcc_e(){
1118 eval printf '%s\\n' $HOSTCC_E
1119 }
1120
1121 hostcc_o(){
1122 eval printf '%s\\n' $HOSTCC_O
1123 }
1124
1125 check_host_cc(){
1126 log check_host_cc "$@"
1127 cat > $TMPC
1128 log_file $TMPC
1129 check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1130 }
1131
1132 check_host_cpp(){
1133 log check_host_cpp "$@"
1134 cat > $TMPC
1135 log_file $TMPC
1136 check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1137 }
1138
1139 check_host_cppflags(){
1140 log check_host_cppflags "$@"
1141 check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1142 int x;
1143 EOF
1144 }
1145
1146 check_host_cflags(){
1147 log check_host_cflags "$@"
1148 set -- $($host_cflags_filter "$@")
1149 check_host_cc "$@" <<EOF && append host_cflags "$@"
1150 int x;
1151 EOF
1152 }
1153
1154 check_host_cpp_condition(){
1155 log check_host_cpp_condition "$@"
1156 header=$1
1157 condition=$2
1158 shift 2
1159 check_host_cpp "$@" <<EOF
1160 #include <$header>
1161 #if !($condition)
1162 #error "unsatisfied condition: $condition"
1163 #endif
1164 EOF
1165 }
1166
1167 apply(){
1168 file=$1
1169 shift
1170 "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1171 }
1172
1173 cp_if_changed(){
1174 cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1175 mkdir -p "$(dirname $2)"
1176 $cp_f "$1" "$2"
1177 }
1178
1179 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1180 # system-dependent things.
1181
1182 AVCODEC_COMPONENTS="
1183 bsfs
1184 decoders
1185 encoders
1186 hwaccels
1187 parsers
1188 "
1189
1190 AVDEVICE_COMPONENTS="
1191 indevs
1192 outdevs
1193 "
1194 AVFILTER_COMPONENTS="
1195 filters
1196 "
1197 AVFORMAT_COMPONENTS="
1198 demuxers
1199 muxers
1200 protocols
1201 "
1202
1203 AVRESAMPLE_COMPONENTS=""
1204 AVUTIL_COMPONENTS=""
1205
1206 COMPONENT_LIST="
1207 $AVCODEC_COMPONENTS
1208 $AVDEVICE_COMPONENTS
1209 $AVFILTER_COMPONENTS
1210 $AVFORMAT_COMPONENTS
1211 $AVRESAMPLE_COMPONENTS
1212 $AVUTIL_COMPONENTS
1213 "
1214
1215 EXAMPLE_LIST="
1216 decode_audio_example
1217 decode_video_example
1218 encode_audio_example
1219 encode_video_example
1220 filter_audio_example
1221 metadata_example
1222 output_example
1223 qsvdec_example
1224 transcode_aac_example
1225 "
1226
1227 HWACCEL_LIBRARY_NONFREE_LIST="
1228 cuda
1229 libnpp
1230 "
1231 HWACCEL_LIBRARY_LIST="
1232 $HWACCEL_LIBRARY_NONFREE_LIST
1233 d3d11va
1234 dxva2
1235 libmfx
1236 mmal
1237 nvenc
1238 omx
1239 vaapi
1240 vda
1241 vdpau
1242 "
1243
1244 EXTERNAL_LIBRARY_GPL_LIST="
1245 libcdio
1246 libx264
1247 libx265
1248 libxavs
1249 libxvid
1250 "
1251
1252 EXTERNAL_LIBRARY_NONFREE_LIST="
1253 libfaac
1254 libfdk_aac
1255 openssl
1256 "
1257
1258 EXTERNAL_LIBRARY_VERSION3_LIST="
1259 libopencore_amrnb
1260 libopencore_amrwb
1261 libvo_aacenc
1262 libvo_amrwbenc
1263 "
1264
1265 EXTERNAL_LIBRARY_LIST="
1266 $EXTERNAL_LIBRARY_GPL_LIST
1267 $EXTERNAL_LIBRARY_NONFREE_LIST
1268 $EXTERNAL_LIBRARY_VERSION3_LIST
1269 avisynth
1270 bzlib
1271 frei0r
1272 gnutls
1273 libbs2b
1274 libdc1394
1275 libdcadec
1276 libfontconfig
1277 libfreetype
1278 libgsm
1279 libhdcd
1280 libilbc
1281 libkvazaar
1282 libmp3lame
1283 libopencv
1284 libopenh264
1285 libopenjpeg
1286 libopus
1287 libpulse
1288 librtmp
1289 libschroedinger
1290 libsnappy
1291 libspeex
1292 libtheora
1293 libtwolame
1294 libvorbis
1295 libvpx
1296 libwavpack
1297 libwebp
1298 libxcb
1299 libxcb_shm
1300 libxcb_xfixes
1301 zlib
1302 "
1303
1304 FEATURE_LIST="
1305 gray
1306 hardcoded_tables
1307 omx_rpi
1308 runtime_cpudetect
1309 safe_bitstream_reader
1310 shared
1311 small
1312 sram
1313 static
1314 swscale_alpha
1315 "
1316
1317 LIBRARY_LIST="
1318 avcodec
1319 avdevice
1320 avfilter
1321 avformat
1322 avresample
1323 avutil
1324 swscale
1325 "
1326
1327 LICENSE_LIST="
1328 gpl
1329 nonfree
1330 version3
1331 "
1332
1333 PROGRAM_LIST="
1334 avconv
1335 avplay
1336 avprobe
1337 "
1338
1339 SUBSYSTEM_LIST="
1340 dct
1341 doc
1342 error_resilience
1343 faan
1344 fft
1345 lsp
1346 lzo
1347 mdct
1348 network
1349 rdft
1350 "
1351
1352 CONFIG_LIST="
1353 $COMPONENT_LIST
1354 $EXAMPLE_LIST
1355 $EXTERNAL_LIBRARY_LIST
1356 $HWACCEL_LIBRARY_LIST
1357 $FEATURE_LIST
1358 $LICENSE_LIST
1359 $LIBRARY_LIST
1360 $PROGRAM_LIST
1361 $SUBSYSTEM_LIST
1362 neon_clobber_test
1363 pic
1364 pod2man
1365 texi2html
1366 thumb
1367 valgrind_backtrace
1368 xmm_clobber_test
1369 "
1370
1371 THREADS_LIST="
1372 pthreads
1373 w32threads
1374 "
1375
1376 ATOMICS_LIST="
1377 atomics_gcc
1378 atomics_suncc
1379 atomics_win32
1380 "
1381
1382 ARCH_LIST="
1383 aarch64
1384 alpha
1385 arm
1386 avr32
1387 avr32_ap
1388 avr32_uc
1389 bfin
1390 ia64
1391 m68k
1392 mips
1393 mips64
1394 parisc
1395 ppc
1396 ppc64
1397 s390
1398 sh4
1399 sparc
1400 sparc64
1401 tilegx
1402 tilepro
1403 tomi
1404 x86
1405 x86_32
1406 x86_64
1407 "
1408
1409 ARCH_EXT_LIST_ARM="
1410 armv5te
1411 armv6
1412 armv6t2
1413 armv8
1414 neon
1415 vfp
1416 vfpv3
1417 "
1418
1419 ARCH_EXT_LIST_X86_SIMD="
1420 amd3dnow
1421 amd3dnowext
1422 avx
1423 avx2
1424 fma3
1425 fma4
1426 mmx
1427 mmxext
1428 sse
1429 sse2
1430 sse3
1431 sse4
1432 sse42
1433 ssse3
1434 xop
1435 "
1436
1437 ARCH_EXT_LIST_PPC="
1438 altivec
1439 dcbzl
1440 ldbrx
1441 power8
1442 ppc4xx
1443 vsx
1444 "
1445
1446 ARCH_EXT_LIST_X86="
1447 $ARCH_EXT_LIST_X86_SIMD
1448 cpunop
1449 i686
1450 "
1451
1452 ARCH_EXT_LIST_MIPS="
1453 loongson
1454 mips32r1
1455 mips64r1
1456 mips32r2
1457 mips64r2
1458 mips32r6
1459 mips64r6
1460 "
1461
1462 ARCH_EXT_LIST="
1463 $ARCH_EXT_LIST_ARM
1464 $ARCH_EXT_LIST_MIPS
1465 $ARCH_EXT_LIST_PPC
1466 $ARCH_EXT_LIST_X86
1467 vis
1468 "
1469
1470 ARCH_FEATURES="
1471 aligned_stack
1472 fast_64bit
1473 fast_clz
1474 fast_cmov
1475 local_aligned_8
1476 local_aligned_16
1477 local_aligned_32
1478 simd_align_16
1479 simd_align_32
1480 "
1481
1482 BUILTIN_LIST="
1483 atomic_cas_ptr
1484 machine_rw_barrier
1485 MemoryBarrier
1486 mm_empty
1487 rdtsc
1488 sem_timedwait
1489 sync_val_compare_and_swap
1490 "
1491 HAVE_LIST_CMDLINE="
1492 inline_asm
1493 symver
1494 yasm
1495 "
1496
1497 HAVE_LIST_PUB="
1498 bigendian
1499 fast_unaligned
1500 "
1501
1502 HEADERS_LIST="
1503 AVFoundation_AVFoundation_h
1504 alsa_asoundlib_h
1505 altivec_h
1506 arpa_inet_h
1507 cdio_paranoia_h
1508 cdio_paranoia_paranoia_h
1509 dispatch_dispatch_h
1510 dev_bktr_ioctl_bt848_h
1511 dev_bktr_ioctl_meteor_h
1512 dev_ic_bt8xx_h
1513 dev_video_bktr_ioctl_bt848_h
1514 dev_video_meteor_ioctl_meteor_h
1515 direct_h
1516 dlfcn_h
1517 d3d11_h
1518 dxva_h
1519 gsm_h
1520 io_h
1521 mach_mach_time_h
1522 machine_ioctl_bt848_h
1523 machine_ioctl_meteor_h
1524 malloc_h
1525 poll_h
1526 sndio_h
1527 soundcard_h
1528 stdatomic_h
1529 sys_mman_h
1530 sys_param_h
1531 sys_resource_h
1532 sys_select_h
1533 sys_soundcard_h
1534 sys_time_h
1535 sys_un_h
1536 sys_videoio_h
1537 unistd_h
1538 valgrind_valgrind_h
1539 windows_h
1540 winsock2_h
1541 "
1542
1543 INTRINSICS_LIST="
1544 intrinsics_neon
1545 "
1546
1547 MATH_FUNCS="
1548 atanf
1549 atan2f
1550 cbrtf
1551 cosf
1552 exp2
1553 exp2f
1554 expf
1555 isinf
1556 isnan
1557 ldexpf
1558 llrint
1559 llrintf
1560 log2
1561 log2f
1562 log10f
1563 lrint
1564 lrintf
1565 powf
1566 rint
1567 round
1568 roundf
1569 sinf
1570 trunc
1571 truncf
1572 "
1573
1574 SYSTEM_FUNCS="
1575 aligned_malloc
1576 clock_gettime
1577 closesocket
1578 CommandLineToArgvW
1579 CoTaskMemFree
1580 CryptGenRandom
1581 dlopen
1582 fcntl
1583 flt_lim
1584 fork
1585 getaddrinfo
1586 gethrtime
1587 getopt
1588 GetProcessAffinityMask
1589 GetProcessMemoryInfo
1590 GetProcessTimes
1591 getrusage
1592 GetSystemTimeAsFileTime
1593 gettimeofday
1594 gmtime_r
1595 inet_aton
1596 isatty
1597 jack_port_get_latency_range
1598 LoadLibrary
1599 localtime_r
1600 mach_absolute_time
1601 MapViewOfFile
1602 memalign
1603 mkstemp
1604 mmap
1605 mprotect
1606 nanosleep
1607 posix_memalign
1608 sched_getaffinity
1609 SetConsoleTextAttribute
1610 setmode
1611 setrlimit
1612 Sleep
1613 strerror_r
1614 sysconf
1615 sysctl
1616 usleep
1617 VirtualAlloc
1618 "
1619
1620 TOOLCHAIN_FEATURES="
1621 as_dn_directive
1622 as_fpu_directive
1623 as_func
1624 as_object_arch
1625 asm_mod_q
1626 attribute_may_alias
1627 attribute_packed
1628 ebp_available
1629 ebx_available
1630 gnu_as
1631 ibm_asm
1632 inline_asm_labels
1633 pragma_deprecated
1634 symver_asm_label
1635 symver_gnu_asm
1636 vfp_args
1637 xform_asm
1638 xmm_clobbers
1639 "
1640
1641 TYPES_LIST="
1642 CONDITION_VARIABLE_Ptr
1643 socklen_t
1644 struct_addrinfo
1645 struct_group_source_req
1646 struct_ip_mreq_source
1647 struct_ipv6_mreq
1648 struct_pollfd
1649 struct_rusage_ru_maxrss
1650 struct_sockaddr_in6
1651 struct_sockaddr_sa_len
1652 struct_sockaddr_storage
1653 struct_v4l2_frmivalenum_discrete
1654 "
1655
1656 HAVE_LIST="
1657 $ARCH_EXT_LIST
1658 $(add_suffix _external $ARCH_EXT_LIST)
1659 $(add_suffix _inline $ARCH_EXT_LIST)
1660 $ARCH_FEATURES
1661 $BUILTIN_LIST
1662 $HAVE_LIST_CMDLINE
1663 $HAVE_LIST_PUB
1664 $HEADERS_LIST
1665 $INTRINSICS_LIST
1666 $MATH_FUNCS
1667 $SYSTEM_FUNCS
1668 $THREADS_LIST
1669 $TOOLCHAIN_FEATURES
1670 $TYPES_LIST
1671 dos_paths
1672 dxva2_lib
1673 libc_msvcrt
1674 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 "
1684
1685 # options emitted with CONFIG_ prefix but not available on the command line
1686 CONFIG_EXTRA="
1687 aandcttables
1688 ac3dsp
1689 audio_frame_queue
1690 audiodsp
1691 blockdsp
1692 bswapdsp
1693 cabac
1694 dirac_parse
1695 dvprofile
1696 faandct
1697 faanidct
1698 fdctdsp
1699 flacdsp
1700 fmtconvert
1701 g722dsp
1702 gmp
1703 golomb
1704 gplv3
1705 h263dsp
1706 h264chroma
1707 h264dsp
1708 h264parse
1709 h264pred
1710 h264qpel
1711 hpeldsp
1712 huffman
1713 huffyuvdsp
1714 huffyuvencdsp
1715 idctdsp
1716 iirfilter
1717 imdct15
1718 intrax8
1719 iso_media
1720 ividsp
1721 jpegtables
1722 libx262
1723 lgplv3
1724 lpc
1725 lzf
1726 me_cmp
1727 mpeg_er
1728 mpegaudio
1729 mpegaudiodsp
1730 mpegvideo
1731 mpegvideoenc
1732 mss34dsp
1733 pixblockdsp
1734 qpeldsp
1735 qsv
1736 qsvdec
1737 qsvenc
1738 rangecoder
1739 riffdec
1740 riffenc
1741 rtpdec
1742 rtpenc_chain
1743 rv34dsp
1744 sinewin
1745 snappy
1746 srtp
1747 startcode
1748 texturedsp
1749 texturedspenc
1750 tpeldsp
1751 vaapi_encode
1752 vc1dsp
1753 videodsp
1754 vp3dsp
1755 vp56dsp
1756 vp8dsp
1757 wma_freqs
1758 wmv2dsp
1759 "
1760
1761 CMDLINE_SELECT="
1762 $ARCH_EXT_LIST
1763 $CONFIG_LIST
1764 $HAVE_LIST_CMDLINE
1765 $THREADS_LIST
1766 asm
1767 cross_compile
1768 debug
1769 extra_warnings
1770 logging
1771 lto
1772 optimizations
1773 rpath
1774 "
1775
1776 PATHS_LIST="
1777 bindir
1778 datadir
1779 docdir
1780 incdir
1781 libdir
1782 mandir
1783 prefix
1784 shlibdir
1785 "
1786
1787 CMDLINE_SET="
1788 $PATHS_LIST
1789 ar
1790 arch
1791 as
1792 build_suffix
1793 cc
1794 objcc
1795 cpu
1796 cross_prefix
1797 custom_allocator
1798 dep_cc
1799 env
1800 extra_version
1801 host_cc
1802 host_cflags
1803 host_ld
1804 host_ldflags
1805 host_libs
1806 host_os
1807 ld
1808 logfile
1809 malloc_prefix
1810 nm
1811 optflags
1812 pkg_config
1813 pkg_config_flags
1814 random_seed
1815 samples
1816 sysinclude
1817 sysroot
1818 target_exec
1819 target_os
1820 target_path
1821 target_samples
1822 toolchain
1823 "
1824
1825 CMDLINE_APPEND="
1826 extra_cflags
1827 extra_objcflags
1828 host_cppflags
1829 "
1830
1831 # code dependency declarations
1832
1833 # architecture extensions
1834
1835 armv5te_deps="arm"
1836 armv6_deps="arm"
1837 armv6t2_deps="arm"
1838 armv8_deps="aarch64"
1839 neon_deps_any="aarch64 arm"
1840 intrinsics_neon_deps="neon"
1841 vfp_deps_any="aarch64 arm"
1842 vfpv3_deps="vfp"
1843
1844 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1845
1846 altivec_deps="ppc"
1847 ppc4xx_deps="ppc"
1848 vsx_deps="altivec"
1849 power8_deps="vsx"
1850
1851 cpunop_deps="i686"
1852 x86_64_select="i686"
1853 x86_64_suggest="fast_cmov"
1854
1855 amd3dnow_deps="mmx"
1856 amd3dnowext_deps="amd3dnow"
1857 i686_deps="x86"
1858 mmx_deps="x86"
1859 mmxext_deps="mmx"
1860 sse_deps="mmxext"
1861 sse2_deps="sse"
1862 sse3_deps="sse2"
1863 ssse3_deps="sse3"
1864 sse4_deps="ssse3"
1865 sse42_deps="sse4"
1866 avx_deps="sse42"
1867 xop_deps="avx"
1868 fma3_deps="avx"
1869 fma4_deps="avx"
1870 avx2_deps="avx"
1871
1872 mmx_external_deps="yasm"
1873 mmx_inline_deps="inline_asm"
1874 mmx_suggest="mmx_external mmx_inline"
1875
1876 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1877 eval dep=\$${ext}_deps
1878 eval ${ext}_external_deps='"${dep}_external"'
1879 eval ${ext}_inline_deps='"${dep}_inline"'
1880 eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1881 done
1882
1883 aligned_stack_if_any="aarch64 ppc x86"
1884 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1885 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1886 fast_unaligned_if_any="aarch64 ppc x86"
1887 simd_align_16_if_any="altivec neon sse"
1888 simd_align_32_if_any="avx"
1889
1890 # system capabilities
1891 symver_if_any="symver_asm_label symver_gnu_asm"
1892 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1893
1894 # threading support
1895 atomics_gcc_if="sync_val_compare_and_swap"
1896 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1897 atomics_win32_if="MemoryBarrier"
1898 atomics_native_if_any="$ATOMICS_LIST"
1899 w32threads_deps="atomics_native"
1900 threads_if_any="$THREADS_LIST"
1901
1902 # subsystems
1903 dct_select="rdft"
1904 dirac_parse_select="golomb"
1905 error_resilience_select="me_cmp"
1906 faandct_deps="faan fdctdsp"
1907 faanidct_deps="faan idctdsp"
1908 h264dsp_select="startcode"
1909 intrax8_select="blockdsp idctdsp"
1910 mdct_select="fft"
1911 rdft_select="fft"
1912 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1913 mpeg_er_select="error_resilience"
1914 mpegaudio_select="mpegaudiodsp"
1915 mpegaudiodsp_select="dct"
1916 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1917 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1918 vc1dsp_select="h264chroma qpeldsp startcode"
1919
1920 # decoders / encoders
1921 aac_decoder_select="imdct15 mdct sinewin"
1922 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1923 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1924 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1925 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1926 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1927 adpcm_g722_decoder_select="g722dsp"
1928 adpcm_g722_encoder_select="g722dsp"
1929 aic_decoder_select="golomb idctdsp"
1930 alac_encoder_select="lpc"
1931 als_decoder_select="bswapdsp"
1932 amrnb_decoder_select="lsp"
1933 amrwb_decoder_select="lsp"
1934 amv_decoder_select="sp5x_decoder"
1935 ape_decoder_select="bswapdsp"
1936 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1937 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1938 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1939 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1940 atrac1_decoder_select="mdct sinewin"
1941 atrac3_decoder_select="mdct"
1942 atrac3p_decoder_select="mdct sinewin"
1943 bink_decoder_select="blockdsp hpeldsp"
1944 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1945 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1946 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1947 cllc_decoder_select="bswapdsp"
1948 comfortnoise_encoder_select="lpc"
1949 cook_decoder_select="audiodsp mdct sinewin"
1950 cscd_decoder_select="lzo"
1951 cscd_decoder_suggest="zlib"
1952 dca_decoder_select="fmtconvert mdct"
1953 dds_decoder_select="texturedsp"
1954 dnxhd_decoder_select="blockdsp idctdsp"
1955 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1956 dvvideo_decoder_select="dvprofile idctdsp"
1957 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1958 dxa_decoder_deps="zlib"
1959 dxv_decoder_select="lzf texturedsp"
1960 eac3_decoder_select="ac3_decoder"
1961 eac3_encoder_select="ac3_encoder"
1962 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1963 eatgq_decoder_select="aandcttables idctdsp"
1964 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1965 exr_decoder_deps="zlib"
1966 ffv1_decoder_select="golomb rangecoder"
1967 ffv1_encoder_select="rangecoder"
1968 ffvhuff_decoder_select="huffyuv_decoder"
1969 ffvhuff_encoder_select="huffyuv_encoder"
1970 fic_decoder_select="golomb"
1971 flac_decoder_select="flacdsp golomb"
1972 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1973 flashsv_decoder_deps="zlib"
1974 flashsv_encoder_deps="zlib"
1975 flashsv2_decoder_deps="zlib"
1976 flv_decoder_select="h263_decoder"
1977 flv_encoder_select="h263_encoder"
1978 fourxm_decoder_select="blockdsp bswapdsp"
1979 fraps_decoder_select="bswapdsp huffman"
1980 g2m_decoder_deps="zlib"
1981 g2m_decoder_select="blockdsp idctdsp jpegtables"
1982 h261_decoder_select="mpeg_er mpegvideo"
1983 h261_encoder_select="aandcttables mpegvideoenc"
1984 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1985 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1986 h263i_decoder_select="h263_decoder"
1987 h263p_encoder_select="h263_encoder"
1988 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1989 h264_decoder_suggest="error_resilience"
1990 hap_decoder_select="snappy texturedsp"
1991 hap_encoder_deps="libsnappy"
1992 hap_encoder_select="texturedspenc"
1993 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1994 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1995 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1996 iac_decoder_select="imc_decoder"
1997 imc_decoder_select="bswapdsp fft mdct sinewin"
1998 indeo3_decoder_select="hpeldsp"
1999 indeo4_decoder_select="ividsp"
2000 indeo5_decoder_select="ividsp"
2001 interplay_video_decoder_select="hpeldsp"
2002 jpegls_decoder_select="golomb mjpeg_decoder"
2003 jpegls_encoder_select="golomb"
2004 jv_decoder_select="blockdsp"
2005 lagarith_decoder_select="huffyuvdsp"
2006 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2007 loco_decoder_select="golomb"
2008 magicyuv_decoder_select="huffyuvdsp"
2009 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2010 metasound_decoder_select="lsp mdct sinewin"
2011 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2012 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2013 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2014 mjpegb_decoder_select="mjpeg_decoder"
2015 mlp_decoder_select="mlp_parser"
2016 motionpixels_decoder_select="bswapdsp"
2017 mp1_decoder_select="mpegaudio"
2018 mp1float_decoder_select="mpegaudio"
2019 mp2_decoder_select="mpegaudio"
2020 mp2float_decoder_select="mpegaudio"
2021 mp3_decoder_select="mpegaudio"
2022 mp3adu_decoder_select="mpegaudio"
2023 mp3adufloat_decoder_select="mpegaudio"
2024 mp3float_decoder_select="mpegaudio"
2025 mp3on4_decoder_select="mpegaudio"
2026 mp3on4float_decoder_select="mpegaudio"
2027 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2028 mpc8_decoder_select="mpegaudiodsp"
2029 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2030 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2031 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2032 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2033 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2034 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2035 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2036 mpeg4_encoder_select="h263_encoder"
2037 msa1_decoder_select="mss34dsp"
2038 msmpeg4v1_decoder_select="h263_decoder"
2039 msmpeg4v2_decoder_select="h263_decoder"
2040 msmpeg4v2_encoder_select="h263_encoder"
2041 msmpeg4v3_decoder_select="h263_decoder"
2042 msmpeg4v3_encoder_select="h263_encoder"
2043 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2044 mts2_decoder_select="mss34dsp"
2045 mxpeg_decoder_select="mjpeg_decoder"
2046 nellymoser_decoder_select="mdct sinewin"
2047 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2048 nuv_decoder_select="idctdsp lzo"
2049 on2avc_decoder_select="mdct"
2050 opus_decoder_deps="avresample"
2051 opus_decoder_select="imdct15"
2052 png_decoder_deps="zlib"
2053 png_encoder_deps="zlib"
2054 png_encoder_select="huffyuvencdsp"
2055 prores_decoder_select="idctdsp"
2056 prores_encoder_select="fdctdsp"
2057 qcelp_decoder_select="lsp"
2058 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2059 ra_144_encoder_select="audio_frame_queue lpc"
2060 ralf_decoder_select="golomb"
2061 rscc_decoder_deps="zlib"
2062 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2063 rv10_encoder_select="h263_encoder"
2064 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2065 rv20_encoder_select="h263_encoder"
2066 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2067 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2068 screenpresso_decoder_deps="zlib"
2069 shorten_decoder_select="golomb"
2070 sipr_decoder_select="lsp"
2071 sp5x_decoder_select="mjpeg_decoder"
2072 svq1_decoder_select="hpeldsp"
2073 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2074 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2075 svq3_decoder_suggest="zlib"
2076 tak_decoder_select="audiodsp"
2077 tdsc_decoder_deps="zlib"
2078 tdsc_decoder_select="mjpeg_decoder"
2079 theora_decoder_select="vp3_decoder"
2080 thp_decoder_select="mjpeg_decoder"
2081 tiff_decoder_suggest="zlib"
2082 tiff_encoder_suggest="zlib"
2083 truehd_decoder_select="mlp_decoder"
2084 truemotion2_decoder_select="bswapdsp"
2085 truespeech_decoder_select="bswapdsp"
2086 tscc_decoder_deps="zlib"
2087 txd_decoder_select="texturedsp"
2088 twinvq_decoder_select="mdct lsp sinewin"
2089 utvideo_decoder_select="bswapdsp"
2090 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2091 vble_decoder_select="huffyuvdsp"
2092 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2093 vc1image_decoder_select="vc1_decoder"
2094 vorbis_decoder_select="mdct"
2095 vorbis_encoder_select="mdct"
2096 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2097 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2098 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2099 vp6a_decoder_select="vp6_decoder"
2100 vp6f_decoder_select="vp6_decoder"
2101 vp7_decoder_select="h264pred videodsp vp8dsp"
2102 vp8_decoder_select="h264pred videodsp vp8dsp"
2103 vp9_decoder_select="videodsp"
2104 webp_decoder_select="vp8_decoder"
2105 wmapro_decoder_select="mdct sinewin wma_freqs"
2106 wmav1_decoder_select="mdct sinewin wma_freqs"
2107 wmav1_encoder_select="mdct sinewin wma_freqs"
2108 wmav2_decoder_select="mdct sinewin wma_freqs"
2109 wmav2_encoder_select="mdct sinewin wma_freqs"
2110 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2111 wmv1_decoder_select="h263_decoder"
2112 wmv1_encoder_select="h263_encoder"
2113 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2114 wmv2_encoder_select="h263_encoder wmv2dsp"
2115 wmv3_decoder_select="vc1_decoder"
2116 wmv3image_decoder_select="wmv3_decoder"
2117 zerocodec_decoder_deps="zlib"
2118 zlib_decoder_deps="zlib"
2119 zlib_encoder_deps="zlib"
2120 zmbv_decoder_deps="zlib"
2121 zmbv_encoder_deps="zlib"
2122
2123 # hardware accelerators
2124 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2125 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2126 vaapi_deps="va_va_h"
2127 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2128 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2129 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2130
2131 h263_vaapi_hwaccel_deps="vaapi"
2132 h263_vaapi_hwaccel_select="h263_decoder"
2133 h264_d3d11va_hwaccel_deps="d3d11va"
2134 h264_d3d11va_hwaccel_select="h264_decoder"
2135 h264_dxva2_hwaccel_deps="dxva2"
2136 h264_dxva2_hwaccel_select="h264_decoder"
2137 h264_mmal_hwaccel_deps="mmal"
2138 h264_qsv_hwaccel_deps="libmfx"
2139 h264_vaapi_hwaccel_deps="vaapi"
2140 h264_vaapi_hwaccel_select="h264_decoder"
2141 h264_vda_hwaccel_deps="vda"
2142 h264_vda_hwaccel_select="h264_decoder"
2143 h264_vda_old_hwaccel_deps="vda"
2144 h264_vda_old_hwaccel_select="h264_decoder"
2145 h264_vdpau_hwaccel_deps="vdpau"
2146 h264_vdpau_hwaccel_select="h264_decoder"
2147 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2148 hevc_d3d11va_hwaccel_select="hevc_decoder"
2149 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2150 hevc_dxva2_hwaccel_select="hevc_decoder"
2151 hevc_qsv_hwaccel_deps="libmfx"
2152 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2153 hevc_vdpau_hwaccel_select="hevc_decoder"
2154 mpeg1_vdpau_hwaccel_deps="vdpau"
2155 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2156 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2157 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2158 mpeg2_dxva2_hwaccel_deps="dxva2"
2159 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2160 mpeg2_mmal_hwaccel_deps="mmal"
2161 mpeg2_qsv_hwaccel_deps="libmfx"
2162 mpeg2_vaapi_hwaccel_deps="vaapi"
2163 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2164 mpeg2_vdpau_hwaccel_deps="vdpau"
2165 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2166 mpeg4_vaapi_hwaccel_deps="vaapi"
2167 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2168 mpeg4_vdpau_hwaccel_deps="vdpau"
2169 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2170 vc1_d3d11va_hwaccel_deps="d3d11va"
2171 vc1_d3d11va_hwaccel_select="vc1_decoder"
2172 vc1_dxva2_hwaccel_deps="dxva2"
2173 vc1_dxva2_hwaccel_select="vc1_decoder"
2174 vc1_mmal_hwaccel_deps="mmal"
2175 vc1_qsv_hwaccel_deps="libmfx"
2176 vc1_vaapi_hwaccel_deps="vaapi"
2177 vc1_vaapi_hwaccel_select="vc1_decoder"
2178 vc1_vdpau_hwaccel_deps="vdpau"
2179 vc1_vdpau_hwaccel_select="vc1_decoder"
2180 vp8_qsv_hwaccel_deps="libmfx"
2181 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2182 vp8_vaapi_hwaccel_select="vp8_decoder"
2183 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2184 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2185 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2186 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2187
2188 # hardware-accelerated codecs
2189 nvenc_deps_any="dlopen LoadLibrary"
2190 nvenc_extralibs='$ldl'
2191 omx_deps="dlopen pthreads"
2192 omx_extralibs='$ldl'
2193 qsvdec_select="qsv"
2194 qsvenc_select="qsv"
2195 vaapi_encode_deps="vaapi"
2196
2197 hwupload_cuda_filter_deps="cuda"
2198 scale_npp_filter_deps="cuda libnpp"
2199
2200 h264_mmal_decoder_deps="mmal"
2201 h264_nvenc_encoder_deps="nvenc"
2202 h264_omx_encoder_deps="omx"
2203 h264_qsv_decoder_deps="libmfx"
2204 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2205 h264_qsv_encoder_deps="libmfx"
2206 h264_qsv_encoder_select="qsvenc"
2207 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2208 h264_vaapi_encoder_select="vaapi_encode golomb"
2209 hevc_nvenc_encoder_deps="nvenc"
2210 hevc_qsv_decoder_deps="libmfx"
2211 hevc_qsv_encoder_deps="libmfx"
2212 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2213 hevc_qsv_encoder_select="qsvenc"
2214 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2215 hevc_vaapi_encoder_select="vaapi_encode golomb"
2216 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2217 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2218 mpeg2_mmal_decoder_deps="mmal"
2219 mpeg2_qsv_decoder_deps="libmfx"
2220 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2221 mpeg2_qsv_encoder_deps="libmfx"
2222 mpeg2_qsv_encoder_select="qsvenc"
2223 mpeg4_omx_encoder_deps="omx"
2224 vc1_mmal_decoder_deps="mmal"
2225 vc1_qsv_decoder_deps="libmfx"
2226 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2227 vp8_qsv_decoder_deps="libmfx"
2228 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
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 mkstemp"
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="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 asyncts_filter_deps="avresample"
2424 blackframe_filter_deps="gpl"
2425 boxblur_filter_deps="gpl"
2426 bs2b_filter_deps="libbs2b"
2427 cropdetect_filter_deps="gpl"
2428 deinterlace_qsv_filter_deps="libmfx"
2429 delogo_filter_deps="gpl"
2430 drawtext_filter_deps="libfreetype"
2431 frei0r_filter_deps="frei0r dlopen"
2432 frei0r_filter_extralibs='$ldl'
2433 frei0r_src_filter_deps="frei0r dlopen"
2434 frei0r_src_filter_extralibs='$ldl'
2435 hdcd_filter_deps="libhdcd"
2436 hqdn3d_filter_deps="gpl"
2437 interlace_filter_deps="gpl"
2438 movie_filter_deps="avcodec avformat"
2439 ocv_filter_deps="libopencv"
2440 resample_filter_deps="avresample"
2441 scale_filter_deps="swscale"
2442 scale_qsv_filter_deps="libmfx"
2443 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2444
2445 # examples
2446 decode_audio_example_deps="avcodec avutil"
2447 decode_video_example_deps="avcodec avutil"
2448 encode_audio_example_deps="avcodec avutil"
2449 encode_video_example_deps="avcodec avutil"
2450 filter_audio_example_deps="avfilter avutil"
2451 metadata_example_deps="avformat avutil"
2452 output_example_deps="avcodec avformat avresample avutil swscale"
2453 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2454 transcode_aac_example_deps="avcodec avformat avresample"
2455
2456 # libraries, in linking order
2457 avcodec_deps="avutil"
2458 avdevice_deps="avformat avcodec avutil"
2459 avfilter_deps="avutil"
2460 avformat_deps="avcodec avutil"
2461 avresample_deps="avutil"
2462 swscale_deps="avutil"
2463
2464 # programs
2465 avconv_deps="avcodec avfilter avformat avresample swscale"
2466 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2467 fps_filter null_filter resample_filter scale_filter
2468 trim_filter"
2469 avplay_deps="avcodec avfilter avformat avresample sdl"
2470 avplay_libs='$sdl_libs'
2471 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2472 avprobe_deps="avcodec avformat"
2473
2474 # documentation
2475 pod2man_deps="doc"
2476 texi2html_deps="doc"
2477
2478 # default parameters
2479
2480 logfile="config.log"
2481
2482 # installation paths
2483 prefix_default="/usr/local"
2484 bindir_default='${prefix}/bin'
2485 datadir_default='${prefix}/share/avconv'
2486 docdir_default='${prefix}/share/doc/libav'
2487 incdir_default='${prefix}/include'
2488 libdir_default='${prefix}/lib'
2489 mandir_default='${prefix}/share/man'
2490 shlibdir_default="$libdir_default"
2491
2492 # toolchain
2493 ar_default="ar"
2494 cc_default="gcc"
2495 host_cc_default="gcc"
2496 cp_f="cp -f"
2497 ln_s="ln -s -f"
2498 nm_default="nm -g"
2499 objformat="elf"
2500 pkg_config_default=pkg-config
2501 ranlib="ranlib"
2502 strip="strip"
2503 version_script='--version-script'
2504 yasmexe="yasm"
2505
2506 # machine
2507 arch_default=$(uname -m)
2508 cpu="generic"
2509 intrinsics="none"
2510
2511 # OS
2512 target_os_default=$(tolower $(uname -s))
2513 host_os=$target_os_default
2514
2515 # configurable options
2516 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2517
2518 enable asm
2519 enable debug
2520 enable doc
2521 enable faan faandct faanidct
2522 enable optimizations
2523 enable safe_bitstream_reader
2524 enable static
2525 enable swscale_alpha
2526 enable valgrind_backtrace
2527
2528 # By default, enable only those hwaccels that have no external dependencies.
2529 enable d3d11va dxva2 vda vdpau
2530
2531 # build settings
2532 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2533 LIBPREF="lib"
2534 LIBSUF=".a"
2535 FULLNAME='$(NAME)$(BUILDSUF)'
2536 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2537 SLIBPREF="lib"
2538 SLIBSUF=".so"
2539 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2540 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2541 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2542 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2543 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2544 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2545 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2546
2547 asflags_filter=echo
2548 cflags_filter=echo
2549 ldflags_filter=echo
2550
2551 AS_C='-c'
2552 AS_O='-o $@'
2553 CC_C='-c'
2554 CC_E='-E -o $@'
2555 CC_O='-o $@'
2556 OBJCC_C='-c'
2557 OBJCC_E='-E -o $@'
2558 OBJCC_O='-o $@'
2559 LD_O='-o $@'
2560 LD_LIB='-l%'
2561 LD_PATH='-L'
2562 HOSTCC_C='-c'
2563 HOSTCC_E='-E -o $@'
2564 HOSTCC_O='-o $@'
2565 HOSTLD_O='-o $@'
2566
2567 host_libs='-lm'
2568 host_cflags_filter=echo
2569 host_ldflags_filter=echo
2570
2571 target_path='$(CURDIR)'
2572
2573 # since the object filename is not given with the -MM flag, the compiler
2574 # is only able to print the basename, and we must add the path ourselves
2575 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2576 DEPFLAGS='-MM'
2577
2578 # find source path
2579 if test -f configure; then
2580 source_path=.
2581 else
2582 source_path=$(cd $(dirname "$0"); pwd)
2583 echo "$source_path" | grep -q '[[:blank:]]' &&
2584 die "Out of tree builds are impossible with whitespace in source path."
2585 test -e "$source_path/config.h" &&
2586 die "Out of tree builds are impossible with config.h in source dir."
2587 fi
2588
2589 for v in "$@"; do
2590 r=${v#*=}
2591 l=${v%"$r"}
2592 r=$(sh_quote "$r")
2593 LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2594 done
2595
2596 find_things(){
2597 thing=$1
2598 pattern=$2
2599 file=$source_path/$3
2600 sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2601 }
2602
2603 ENCODER_LIST=$(find_things encoder ENC libavcodec/allcodecs.c)
2604 DECODER_LIST=$(find_things decoder DEC libavcodec/allcodecs.c)
2605 HWACCEL_LIST=$(find_things hwaccel HWACCEL libavcodec/allcodecs.c)
2606 PARSER_LIST=$(find_things parser PARSER libavcodec/allcodecs.c)
2607 MUXER_LIST=$(find_things muxer _MUX libavformat/allformats.c)
2608 DEMUXER_LIST=$(find_things demuxer DEMUX libavformat/allformats.c)
2609 OUTDEV_LIST=$(find_things outdev OUTDEV libavdevice/alldevices.c)
2610 INDEV_LIST=$(find_things indev _IN libavdevice/alldevices.c)
2611 FILTER_LIST=$(find_things filter FILTER libavfilter/allfilters.c)
2612
2613 find_things_extern(){
2614 thing=$1
2615 pattern=$2
2616 file=$source_path/$3
2617 sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2618 }
2619
2620 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2621 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2622
2623 ALL_COMPONENTS="
2624 $BSF_LIST
2625 $DECODER_LIST
2626 $DEMUXER_LIST
2627 $ENCODER_LIST
2628 $FILTER_LIST
2629 $HWACCEL_LIST
2630 $INDEV_LIST
2631 $MUXER_LIST
2632 $OUTDEV_LIST
2633 $PARSER_LIST
2634 $PROTOCOL_LIST
2635 "
2636
2637 for n in $COMPONENT_LIST; do
2638 v=$(toupper ${n%s})_LIST
2639 eval enable \$$v
2640 eval ${n}_if_any="\$$v"
2641 done
2642
2643 enable $ARCH_EXT_LIST
2644
2645 die_unknown(){
2646 echo "Unknown option \"$1\"."
2647 echo "See $0 --help for available options."
2648 exit 1
2649 }
2650
2651 print_3_columns() {
2652 printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2653 }
2654
2655 show_list() {
2656 suffix=_$1
2657 shift
2658 echo $* | sed s/$suffix//g | print_3_columns
2659 exit 0
2660 }
2661
2662 rand_list(){
2663 IFS=', '
2664 set -- $*
2665 unset IFS
2666 for thing; do
2667 comp=${thing%:*}
2668 prob=${thing#$comp}
2669 prob=${prob#:}
2670 is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2671 echo "prob ${prob:-0.5}"
2672 printf '%s\n' $comp
2673 done
2674 }
2675
2676 do_random(){
2677 action=$1
2678 shift
2679 random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2680 $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2681 }
2682
2683 for opt do
2684 optval="${opt#*=}"
2685 case "$opt" in
2686 --extra-ldflags=*)
2687 add_ldflags $optval
2688 ;;
2689 --extra-ldexeflags=*)
2690 add_ldexeflags $optval
2691 ;;
2692 --extra-libs=*)
2693 add_extralibs $optval
2694 ;;
2695 --disable-devices)
2696 disable $INDEV_LIST $OUTDEV_LIST
2697 ;;
2698 --enable-debug=*)
2699 debuglevel="$optval"
2700 ;;
2701 --disable-programs)
2702 disable $PROGRAM_LIST
2703 ;;
2704 --disable-everything)
2705 map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2706 ;;
2707 --disable-all)
2708 map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2709 disable $LIBRARY_LIST $PROGRAM_LIST doc
2710 ;;
2711 --enable-random|--disable-random)
2712 action=${opt%%-random}
2713 do_random ${action#--} $COMPONENT_LIST
2714 ;;
2715 --enable-random=*|--disable-random=*)
2716 action=${opt%%-random=*}
2717 do_random ${action#--} $optval
2718 ;;
2719 --enable-*=*|--disable-*=*)
2720 eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2721 is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2722 eval list=\$$(toupper $thing)_LIST
2723 name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2724 $action $(filter "$name" $list)
2725 ;;
2726 --enable-avserver|--disable-avserver*)
2727 warn "avserver has been removed, the ${opt} option is only"\
2728 "provided for compatibility and will be removed in the future"
2729 ;;
2730 --enable-?*|--disable-?*)
2731 eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2732 if is_in $option $COMPONENT_LIST; then
2733 test $action = disable && action=unset
2734 eval $action \$$(toupper ${option%s})_LIST
2735 elif is_in $option $CMDLINE_SELECT; then
2736 $action $option
2737 else
2738 die_unknown $opt
2739 fi
2740 ;;
2741 --list-*)
2742 NAME="${opt#--list-}"
2743 is_in $NAME $COMPONENT_LIST || die_unknown $opt
2744 NAME=${NAME%s}
2745 eval show_list $NAME \$$(toupper $NAME)_LIST
2746 ;;
2747 --help|-h) show_help
2748 ;;
2749 --quiet|-q) quiet=yes
2750 ;;
2751 *)
2752 optname="${opt%%=*}"
2753 optname="${optname#--}"
2754 optname=$(echo "$optname" | sed 's/-/_/g')
2755 if is_in $optname $CMDLINE_SET; then
2756 eval $optname='$optval'
2757 elif is_in $optname $CMDLINE_APPEND; then
2758 append $optname "$optval"
2759 else
2760 die_unknown $opt
2761 fi
2762 ;;
2763 esac
2764 done
2765
2766 for e in $env; do
2767 eval "export $e"
2768 done
2769
2770 disabled logging && logfile=/dev/null
2771
2772 # Die early if licensing-related configure options are incompatible.
2773 die_license_disabled() {
2774 enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2775 }
2776
2777 map "die_license_disabled gpl" $EXTERNAL_LIBRARY_GPL_LIST
2778 map "die_license_disabled nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2779 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2780
2781 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2782
2783 # Disable all the library-specific components if the library itself
2784 # is disabled, see AVCODEC_LIST and following _LIST variables.
2785
2786 disable_components(){
2787 disabled ${1} && disable $(
2788 eval components="\$$(toupper ${1})_COMPONENTS"
2789 map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2790 )
2791 }
2792
2793 map 'disable_components $v' $LIBRARY_LIST
2794
2795 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2796 set >> $logfile
2797
2798 case "$toolchain" in
2799 *-asan)
2800 cc_default="${toolchain%-asan}"
2801 add_cflags -fsanitize=address
2802 add_ldflags -fsanitize=address
2803 ;;
2804 *-msan)
2805 cc_default="${toolchain%-msan}"
2806 add_cflags -fsanitize=memory -fsanitize-memory-track-origins
2807 add_ldflags -fsanitize=memory
2808 ;;
2809 *-tsan)
2810 cc_default="${toolchain%-tsan}"
2811 add_cflags -fsanitize=thread -pie
2812 add_ldflags -fsanitize=thread -pie
2813 case "$toolchain" in
2814 gcc-tsan)
2815 add_cflags -fPIC
2816 add_ldflags -fPIC
2817 ;;
2818 esac
2819 ;;
2820 *-usan)
2821 cc_default="${toolchain%-usan}"
2822 add_cflags -fsanitize=undefined
2823 add_ldflags -fsanitize=undefined
2824 case "$toolchain" in
2825 clang-usan)
2826 add_cflags -O1
2827 ;;
2828 esac
2829 ;;
2830 valgrind-*)
2831 target_exec_default="valgrind"
2832 case "$toolchain" in
2833 valgrind-massif)
2834 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2835 ;;
2836 valgrind-memcheck)
2837 target_exec_args="--track-origins=yes --leak-check=full"
2838 ;;
2839 esac
2840 ;;
2841 msvc)
2842 # Check whether the current MSVC version needs the C99 converter.
2843 # From MSVC 2013 (compiler major version 18) onwards, it does actually
2844 # support enough of C99 to build libav. Default to the new
2845 # behaviour if the regexp was unable to match anything, since this
2846 # successfully parses the version number of existing supported
2847 # versions that require the converter (MSVC 2010 and 2012).
2848 cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2849 if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2850 cc_default="cl"
2851 else
2852 cc_default="c99wrap cl"
2853 fi
2854 ld_default="$source_path/compat/windows/mslink"
2855 nm_default="dumpbin -symbols"
2856 ar_default="lib"
2857 case "$arch" in
2858 arm*)
2859 as_default="armasm"
2860 ;;
2861 esac
2862 target_os_default="win32"
2863 # Use a relative path for TMPDIR. This makes sure all the
2864 # ffconf temp files are written with a relative path, avoiding
2865 # issues with msys/win32 path conversion for MSVC parameters
2866 # such as -Fo<file> or -out:<file>.
2867 TMPDIR=.
2868 ;;
2869 icl)
2870 cc_default="icl"
2871 ld_default="xilink"
2872 nm_default="dumpbin -symbols"
2873 ar_default="xilib"
2874 target_os_default="win32"
2875 TMPDIR=.
2876 ;;
2877 gcov)
2878 add_cflags -fprofile-arcs -ftest-coverage
2879 add_ldflags -fprofile-arcs -ftest-coverage
2880 ;;
2881 llvm-cov)
2882 add_cflags -fprofile-arcs -ftest-coverage
2883 add_ldflags --coverage
2884 ;;
2885 hardened)
2886 add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2887 add_cflags -fno-strict-overflow -fstack-protector-all
2888 add_ldflags -Wl,-z,relro -Wl,-z,now
2889 ;;
2890 ?*)
2891 die "Unknown toolchain $toolchain"
2892 ;;
2893 esac
2894
2895 test -n "$cross_prefix" && enable cross_compile
2896
2897 if enabled cross_compile; then
2898 test -n "$arch" && test -n "$target_os" ||
2899 die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
2900 fi
2901
2902 ar_default="${cross_prefix}${ar_default}"
2903 cc_default="${cross_prefix}${cc_default}"
2904 occ_default="${cross_prefix}${occ_default}"
2905 nm_default="${cross_prefix}${nm_default}"
2906 pkg_config_default="${cross_prefix}${pkg_config_default}"
2907 ranlib="${cross_prefix}${ranlib}"
2908 strip="${cross_prefix}${strip}"
2909
2910 sysinclude_default="${sysroot}/usr/include"
2911
2912 set_default arch cc pkg_config sysinclude target_exec target_os
2913 enabled cross_compile || host_cc_default=$cc
2914 set_default host_cc
2915
2916 if ! $pkg_config --version >/dev/null 2>&1; then
2917 warn "$pkg_config not found, library detection may fail."
2918 pkg_config=false
2919 fi
2920
2921 exesuf() {
2922 case $1 in
2923 mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2924 esac
2925 }
2926
2927 EXESUF=$(exesuf $target_os)
2928 HOSTEXESUF=$(exesuf $host_os)
2929
2930 # set temporary file name
2931 : ${TMPDIR:=$TEMPDIR}
2932 : ${TMPDIR:=$TMP}
2933 : ${TMPDIR:=/tmp}
2934
2935 if ! check_cmd mktemp -u XXXXXX; then
2936 # simple replacement for missing mktemp
2937 # NOT SAFE FOR GENERAL USE
2938 mktemp(){
2939 echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2940 }
2941 fi
2942
2943 tmpfile(){
2944 tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2945 (set -C; exec > $tmp) 2>/dev/null ||
2946 die "Unable to create temporary file in $TMPDIR."
2947 append TMPFILES $tmp
2948 eval $1=$tmp
2949 }
2950
2951 trap 'rm -f -- $TMPFILES' EXIT
2952
2953 tmpfile TMPASM .asm
2954 tmpfile TMPC .c
2955 tmpfile TMPE $EXESUF
2956 tmpfile TMPH .h
2957 tmpfile TMPO .o
2958 tmpfile TMPS .S
2959 tmpfile TMPSH .sh
2960 tmpfile TMPV .ver
2961
2962 unset -f mktemp
2963
2964 chmod +x $TMPE
2965
2966 # make sure we can execute files in $TMPDIR
2967 cat > $TMPSH 2>> $logfile <<EOF
2968 #! /bin/sh
2969 EOF
2970 chmod +x $TMPSH >> $logfile 2>&1
2971 if ! $TMPSH >> $logfile 2>&1; then
2972 cat <<EOF
2973 Unable to create and execute files in $TMPDIR. Set the TMPDIR environment
2974 variable to another directory and make sure that it is not mounted noexec.
2975 EOF
2976 die "Sanity test failed."
2977 fi
2978
2979 armasm_flags(){
2980 for flag; do
2981 case $flag in
2982 # Filter out MSVC cl.exe options from cflags that shouldn't
2983 # be passed to gas-preprocessor
2984 -M[TD]*) ;;
2985 *) echo $flag ;;
2986 esac
2987 done
2988 }
2989
2990 ccc_flags(){
2991 for flag; do
2992 case $flag in
2993 -std=c99) echo -c99 ;;
2994 -mcpu=*) echo -arch ${flag#*=} ;;
2995 -mieee) echo -ieee ;;
2996 -O*|-fast) echo $flag ;;
2997 -fno-math-errno) echo -assume nomath_errno ;;
2998 -g) echo -g3 ;;
2999 -Wall) echo -msg_enable level2 ;;
3000 -Wno-pointer-sign) echo -msg_disable ptrmismatch1 ;;
3001 -Wl,*) echo $flag ;;
3002 -f*|-W*) ;;
3003 *) echo $flag ;;
3004 esac
3005 done
3006 }
3007
3008 cparser_flags(){
3009 for flag; do
3010 case $flag in
3011 -Wno-switch) echo -Wno-switch-enum ;;
3012 -Wno-format-zero-length) ;;
3013 -Wdisabled-optimization) ;;
3014 -Wno-pointer-sign) echo -Wno-other ;;
3015 *) echo $flag ;;
3016 esac
3017 done
3018 }
3019
3020 msvc_common_flags(){
3021 for flag; do
3022 case $flag in
3023 # In addition to specifying certain flags under the compiler
3024 # specific filters, they must be specified here as well or else the
3025 # generic catch all at the bottom will print the original flag.
3026 -Wall) ;;
3027 -std=c99) ;;
3028 # Common flags
3029 -fomit-frame-pointer) ;;
3030 -g) echo -Z7 ;;
3031 -fno-math-errno) ;;
3032 -fno-common) ;;
3033 -fno-signed-zeros) ;;
3034 -fPIC) ;;
3035 -mthumb) ;;
3036 -march=*) ;;
3037 -lz) echo zlib.lib ;;
3038 -lavicap32) echo vfw32.lib user32.lib ;;
3039 -lx264) echo libx264.lib ;;
3040 -l*) echo ${flag#-l}.lib ;;
3041 -L*) echo -libpath:${flag#-L} ;;
3042 *) echo $flag ;;
3043 esac
3044 done
3045 }
3046
3047 msvc_flags(){
3048 msvc_common_flags "$@"
3049 for flag; do
3050 case $flag in
3051 -Wall) echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
3052 -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3053 -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3054 -wd4273 -wd4554 -wd4701 -wd4703 ;;
3055 esac
3056 done
3057 }
3058
3059 icl_flags(){
3060 msvc_common_flags "$@"
3061 for flag; do
3062 case $flag in
3063 # Despite what Intel's documentation says -Wall, which is supported
3064 # on Windows, does enable remarks so disable them here.
3065 -Wall) echo $flag -Qdiag-disable:remark ;;
3066 -std=c99) echo -Qstd=c99 ;;
3067 esac
3068 done
3069 }
3070
3071 pgi_flags(){
3072 for flag; do
3073 case $flag in
3074 -flto) echo -Mipa=fast,libopt,libinline,vestigial ;;
3075 -fomit-frame-pointer) echo -Mnoframe ;;
3076 -g) echo -gopt ;;
3077 *) echo $flag ;;
3078 esac
3079 done
3080 }
3081
3082 suncc_flags(){
3083 for flag; do
3084 case $flag in
3085 -march=*|-mcpu=*)
3086 case "${flag#*=}" in
3087 native) echo -xtarget=native ;;
3088 v9|niagara) echo -xarch=sparc ;;
3089 ultrasparc) echo -xarch=sparcvis ;;
3090 ultrasparc3|niagara2) echo -xarch=sparcvis2 ;;
3091 i586|pentium) echo -xchip=pentium ;;
3092 i686|pentiumpro|pentium2) echo -xtarget=pentium_pro ;;
3093 pentium3*|c3-2) echo -xtarget=pentium3 ;;
3094 pentium-m) echo -xarch=sse2 -xchip=pentium3 ;;
3095 pentium4*) echo -xtarget=pentium4 ;;
3096 prescott|nocona) echo -xarch=sse3 -xchip=pentium4 ;;
3097 *-sse3) echo -xarch=sse3 ;;
3098 core2) echo -xarch=ssse3 -xchip=core2 ;;
3099 corei7) echo -xarch=sse4_2 -xchip=nehalem ;;
3100 corei7-avx) echo -xarch=avx -xchip=sandybridge ;;
3101 amdfam10|barcelona|bdver*) echo -xarch=sse4_1 ;;
3102 athlon-4|athlon-[mx]p) echo -xarch=ssea ;;
3103 k8|opteron|athlon64|athlon-fx)
3104 echo -xarch=sse2a ;;
3105 athlon*) echo -xarch=pentium_proa ;;
3106 esac
3107 ;;
3108 -std=c99) echo -xc99 ;;
3109 -fomit-frame-pointer) echo -xregs=frameptr ;;
3110 -fPIC) echo -KPIC -xcode=pic32 ;;
3111 -W*,*) echo $flag ;;
3112 -f*-*|-W*|-mimpure-text) ;;
3113 -shared) echo -G ;;
3114 *) echo $flag ;;
3115 esac
3116 done
3117 }
3118
3119 tms470_flags(){
3120 for flag; do
3121 case $flag in
3122 -march=*|-mcpu=*)
3123 case "${flag#*=}" in
3124 armv7-a|cortex-a*) echo -mv=7a8 ;;
3125 armv7-r|cortex-r*) echo -mv=7r4 ;;
3126 armv7-m|cortex-m*) echo -mv=7m3 ;;
3127 armv6*|arm11*) echo -mv=6 ;;
3128 armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3129 echo -mv=5e ;;
3130 armv4*|arm7*|arm9[24]*) echo -mv=4 ;;
3131 esac
3132 ;;
3133 -mfpu=neon) echo --float_support=vfpv3 --neon ;;
3134 -mfpu=vfp) echo --float_support=vfpv2 ;;
3135 -mfpu=vfpv3) echo --float_support=vfpv3 ;;
3136 -mfpu=vfpv3-d16) echo --float_support=vfpv3d16 ;;
3137 -msoft-float) echo --float_support=vfplib ;;
3138 -O[0-3]|-mf=*) echo $flag ;;
3139 -g) echo -g -mn ;;
3140 -pds=*) echo $flag ;;
3141 -D*|-I*) echo $flag ;;
3142 --gcc|--abi=*) echo $flag ;;
3143 -me) echo $flag ;;
3144 esac
3145 done
3146 }
3147
3148 probe_cc(){
3149 pfx=$1
3150 _cc=$2
3151
3152 unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3153 unset _ld_o _ldflags _ld_lib _ld_path
3154 unset _depflags _DEPCMD _DEPFLAGS
3155 _flags_filter=echo
3156
3157 if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3158 _type=llvm_gcc
3159 gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3160 _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3161 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3162 _cflags_speed='-O3'
3163 _cflags_size='-Os'
3164 elif $_cc -v 2>&1 | grep -qi ^gcc; then
3165 _type=gcc
3166 gcc_version=$($_cc --version | head -n1)
3167 gcc_basever=$($_cc -dumpversion)
3168 gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3169 gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3170 _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3171 if ! $_cc -dumpversion | grep -q '^2\.'; then
3172 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3173 fi
3174 _cflags_speed='-O3'
3175 _cflags_size='-Os'
3176 elif $_cc --version 2>/dev/null | grep -q ^icc; then
3177 _type=icc
3178 _ident=$($_cc --version | head -n1)
3179 _depflags='-MMD'
3180 _cflags_speed='-O3'
3181 _cflags_size='-Os'
3182 _cflags_noopt='-O1'
3183 elif $_cc -v 2>&1 | grep -q xlc; then
3184 _type=xlc
3185 _ident=$($_cc -qversion 2>/dev/null | head -n1)
3186 _cflags_speed='-O5'
3187 _cflags_size='-O5 -qcompact'
3188 elif $_cc -V 2>/dev/null | grep -q Compaq; then
3189 _type=ccc
3190 _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3191 _DEPFLAGS='-M'
3192 _cflags_speed='-fast'
3193 _cflags_size='-O1'
3194 _flags_filter=ccc_flags
3195 elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3196 test -d "$sysroot" || die "No valid sysroot specified."
3197 _type=armcc
3198 _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3199 armcc_conf="$PWD/armcc.conf"
3200 $_cc --arm_linux_configure \
3201 --arm_linux_config_file="$armcc_conf" \
3202 --configure_sysroot="$sysroot" \
3203 --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3204 die "Error creating armcc configuration file."
3205 $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3206 _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3207 as_default="${cross_prefix}gcc"
3208 _depflags='-MMD'
3209 _cflags_speed='-O3'
3210 _cflags_size='-Os'
3211 elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3212 _type=tms470
3213 _ident=$($_cc -version | head -n1 | tr -s ' ')
3214 _flags='--gcc --abi=eabi -me'
3215 _cc_e='-ppl -fe=$@'
3216 _cc_o='-fe=$@'
3217 _depflags='-ppa -ppd=$(@:.o=.d)'
3218 _cflags_speed='-O3 -mf=5'
3219 _cflags_size='-O3 -mf=2'
3220 _flags_filter=tms470_flags
3221 elif $_cc -v 2>&1 | grep -q clang; then
3222 _type=clang
3223 _ident=$($_cc --version 2>/dev/null | head -n1)
3224 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3225 _cflags_speed='-O3'
3226 _cflags_size='-Os'
3227 elif $_cc -V 2>&1 | grep -q Sun; then
3228 _type=suncc
3229 _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3230 _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3231 _DEPFLAGS='-xM1 -xc99'
3232 _ldflags='-std=c99'
3233 _cflags_speed='-O5'
3234 _cflags_size='-O5 -xspace'
3235 _flags_filter=suncc_flags
3236 elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3237 _type=pathscale
3238 _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3239 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3240 _cflags_speed='-O2'
3241 _cflags_size='-Os'
3242 _flags_filter='filter_out -Wdisabled-optimization'
3243 elif $_cc -v 2>&1 | grep -q Open64; then
3244 _type=open64
3245 _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3246 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3247 _cflags_speed='-O2'
3248 _cflags_size='-Os'
3249 _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3250 elif $_cc -V 2>&1 | grep -q Portland; then
3251 _type=pgi
3252 _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3253 opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3254 _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3255 _cflags_size="-O2 -Munroll=c:1 $opt_common"
3256 _cflags_noopt="-O1"
3257 _flags_filter=pgi_flags
3258 elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3259 _type=armasm
3260 _ident=$($_cc | head -n1)
3261 # 4509: "This form of conditional instruction is deprecated"
3262 _flags="-nologo -ignore 4509"
3263 _flags_filter=armasm_flags
3264 elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3265 _type=msvc
3266 _ident=$($_cc 2>&1 | head -n1)
3267 _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3268 _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3269 _cflags_speed="-O2"
3270 _cflags_size="-O1"
3271 if $_cc -nologo- 2>&1 | grep -q Linker; then
3272 _ld_o='-out:$@'
3273 else
3274 _ld_o='-Fe$@'
3275 fi
3276 _cc_o='-Fo$@'
3277 _cc_e='-P -Fi$@'
3278 _flags_filter=msvc_flags
3279 _ld_lib='lib%.a'
3280 _ld_path='-libpath:'
3281 _flags='-nologo'
3282 elif $_cc 2>&1 | grep -q Intel; then
3283 _type=icl
3284 _ident=$($_cc 2>&1 | head -n1)
3285 _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3286 # Not only is O3 broken on 13.x+ but it is slower on all previous
3287 # versions (tested) as well.
3288 _cflags_speed="-O2"
3289 _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3290 if $_cc 2>&1 | grep -q Linker; then
3291 _ld_o='-out:$@'
3292 else
3293 _ld_o='-Fe$@'
3294 fi
3295 _cc_o='-Fo$@'
3296 _cc_e='-P'
3297 _flags_filter=icl_flags
3298 _ld_lib='lib%.a'
3299 _ld_path='-libpath:'
3300 # -Qdiag-error to make icl error when seeing certain unknown arguments
3301 _flags='-nologo -Qdiag-error:4044,10157'
3302 # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3303 # with MSVC which enables it by default.
3304 _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3305 elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3306 # lld can emulate multiple different linkers; in ms link.exe mode,
3307 # the -? parameter gives the help output which contains an identifyable
3308 # string, while it gives an error in other modes.
3309 _type=lld-link
3310 # The link.exe mode doesn't have a switch for getting the version,
3311 # but we can force it back to gnu mode and get the version from there.
3312 _ident=$($_cc -flavor gnu --version 2>/dev/null)
3313 _ld_o='-out:$@'
3314 _flags_filter=msvc_flags
3315 _ld_lib='lib%.a'
3316 _ld_path='-libpath:'
3317 elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3318 _type=cparser
3319 _ident=$($_cc --version | head -n1)
3320 _depflags='-MMD'
3321 _cflags_speed='-O4'
3322 _cflags_size='-O2'
3323 _flags_filter=cparser_flags
3324 fi
3325
3326 eval ${pfx}_type=\$_type
3327 eval ${pfx}_ident=\$_ident
3328 }
3329
3330 set_ccvars(){
3331 eval ${1}_C=\${_cc_c-\${${1}_C}}
3332 eval ${1}_E=\${_cc_e-\${${1}_E}}
3333 eval ${1}_O=\${_cc_o-\${${1}_O}}
3334
3335 if [ -n "$_depflags" ]; then
3336 eval ${1}_DEPFLAGS=\$_depflags
3337 else
3338 eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3339 eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3340 eval DEP${1}FLAGS=\$_flags
3341 fi
3342 }
3343
3344 probe_cc cc "$cc"
3345 cflags_filter=$_flags_filter
3346 cflags_speed=$_cflags_speed
3347 cflags_size=$_cflags_size
3348 cflags_noopt=$_cflags_noopt
3349 add_cflags $_flags $_cflags
3350 cc_ldflags=$_ldflags
3351 set_ccvars CC
3352
3353 probe_cc hostcc "$host_cc"
3354 host_cflags_filter=$_flags_filter
3355 add_host_cflags $_flags $_cflags
3356 set_ccvars HOSTCC
3357
3358 test -n "$cc_type" && enable $cc_type ||
3359 warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3360
3361 : ${as_default:=$cc}
3362 : ${objcc_default:=$cc}
3363 : ${dep_cc_default:=$cc}
3364 : ${ld_default:=$cc}
3365 : ${host_ld_default:=$host_cc}
3366 set_default ar as objcc dep_cc ld host_ld
3367
3368 probe_cc as "$as"
3369 asflags_filter=$_flags_filter
3370 add_asflags $_flags $_cflags
3371 set_ccvars AS
3372
3373 probe_cc objcc "$objcc"
3374 objcflags_filter=$_flags_filter
3375 add_objcflags $_flags $_cflags
3376 set_ccvars OBJC
3377
3378 probe_cc ld "$ld"
3379 ldflags_filter=$_flags_filter
3380 add_ldflags $_flags $_ldflags
3381 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3382 LD_O=${_ld_o-$LD_O}
3383 LD_LIB=${_ld_lib-$LD_LIB}
3384 LD_PATH=${_ld_path-$LD_PATH}
3385
3386 probe_cc hostld "$host_ld"
3387 host_ldflags_filter=$_flags_filter
3388 add_host_ldflags $_flags $_ldflags
3389 HOSTLD_O=${_ld_o-$HOSTLD_O}
3390
3391 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3392 probe_cc depcc "$dep_cc"
3393 CCDEP=${_DEPCMD:-$DEPCMD}
3394 CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3395 DEPCCFLAGS=$_flags
3396 fi
3397
3398 if $ar 2>&1 | grep -q Microsoft; then
3399 arflags="-nologo"
3400 ar_o='-out:$@'
3401 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3402 arflags="rq"
3403 ar_o='$@'
3404 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3405 arflags='-Xany -r -c'
3406 ar_o='$@'
3407 else
3408 arflags="rc"
3409 ar_o='$@'
3410 fi
3411
3412 add_cflags $extra_cflags
3413 add_objcflags $extra_objcflags
3414 add_asflags $extra_cflags
3415
3416 if test -n "$sysroot"; then
3417 case "$cc_type" in
3418 gcc|llvm_gcc|clang)
3419 add_cppflags --sysroot="$sysroot"
3420 add_ldflags --sysroot="$sysroot"
3421 ;;
3422 tms470)
3423 add_cppflags -I"$sysinclude"
3424 add_ldflags --sysroot="$sysroot"
3425 ;;
3426 esac
3427 fi
3428
3429 if test "$cpu" = host; then
3430 enabled cross_compile &&
3431 die "--cpu=host makes no sense when cross-compiling."
3432
3433 case "$cc_type" in
3434 gcc|llvm_gcc)
3435 check_native(){
3436 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3437 sed -n "/cc1.*$1=/{
3438 s/.*$1=\\([^ ]*\\).*/\\1/
3439 p
3440 q
3441 }" $TMPE
3442 }
3443 cpu=$(check_native -march || check_native -mcpu)
3444 ;;
3445 esac
3446
3447 test "${cpu:-host}" = host &&
3448 die "--cpu=host not supported with compiler $cc"
3449 fi
3450
3451 # Deal with common $arch aliases
3452 case "$arch" in
3453 aarch64|arm64)
3454 arch="aarch64"
3455 ;;
3456 arm*)
3457 arch="arm"
3458 ;;
3459 mips*|IP*)
3460 case "$arch" in
3461 *el)
3462 add_cppflags -EL
3463 add_ldflags -EL
3464 ;;
3465 *eb)
3466 add_cppflags -EB
3467 add_ldflags -EB
3468 ;;
3469 esac
3470 arch="mips"
3471 ;;
3472 parisc*|hppa*)
3473 arch="parisc"
3474 ;;
3475 "Power Macintosh"|ppc*|powerpc*)
3476 arch="ppc"
3477 ;;
3478 s390|s390x)
3479 arch="s390"
3480 ;;
3481 sh4|sh)
3482 arch="sh4"
3483 ;;
3484 sun4u|sparc*)
3485 arch="sparc"
3486 ;;
3487 tilegx|tile-gx)
3488 arch="tilegx"
3489 ;;
3490 i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3491 arch="x86"
3492 ;;
3493 esac
3494
3495 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3496 enable $arch
3497
3498 # Add processor-specific flags
3499 if enabled aarch64; then
3500
3501 case $cpu in
3502 armv*)
3503 cpuflags="-march=$cpu"
3504 ;;
3505 *)
3506 cpuflags="-mcpu=$cpu"
3507 ;;
3508 esac
3509
3510 elif enabled alpha; then
3511
3512 cpuflags="-mcpu=$cpu"
3513
3514 elif enabled arm; then
3515
3516 check_arm_arch() {
3517 check_cpp_condition stddef.h \
3518 "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3519 $cpuflags
3520 }
3521
3522 probe_arm_arch() {
3523 if check_arm_arch 4; then echo armv4
3524 elif check_arm_arch 4T; then echo armv4t
3525 elif check_arm_arch 5; then echo armv5
3526 elif check_arm_arch 5E; then echo armv5e
3527 elif check_arm_arch 5T; then echo armv5t
3528 elif check_arm_arch 5TE; then echo armv5te
3529 elif check_arm_arch 5TEJ; then echo armv5te
3530 elif check_arm_arch 6; then echo armv6
3531 elif check_arm_arch 6J; then echo armv6j
3532 elif check_arm_arch 6K; then echo armv6k
3533 elif check_arm_arch 6Z; then echo armv6z
3534 elif check_arm_arch 6ZK; then echo armv6zk
3535 elif check_arm_arch 6T2; then echo armv6t2
3536 elif check_arm_arch 7; then echo armv7
3537 elif check_arm_arch 7A 7_A; then echo armv7-a
3538 elif check_arm_arch 7S; then echo armv7-a
3539 elif check_arm_arch 7R 7_R; then echo armv7-r
3540 elif check_arm_arch 7M 7_M; then echo armv7-m
3541 elif check_arm_arch 7EM 7E_M; then echo armv7-m
3542 elif check_arm_arch 8A 8_A; then echo armv8-a
3543 fi
3544 }
3545
3546 [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3547
3548 case $cpu in
3549 armv*)
3550 cpuflags="-march=$cpu"
3551 subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3552 ;;
3553 *)
3554 cpuflags="-mcpu=$cpu"
3555 case $cpu in
3556 cortex-a*) subarch=armv7a ;;
3557 cortex-r*) subarch=armv7r ;;
3558 cortex-m*) enable thumb; subarch=armv7m ;;
3559 arm11*) subarch=armv6 ;;
3560 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3561 armv4*|arm7*|arm9[24]*) subarch=armv4 ;;
3562 *) subarch=$(probe_arm_arch) ;;
3563 esac
3564 ;;
3565 esac
3566
3567 case "$subarch" in
3568 armv5t*) enable fast_clz ;;
3569 armv[6-8]*) enable fast_clz fast_unaligned ;;
3570 esac
3571
3572 elif enabled avr32; then
3573
3574 case $cpu in
3575 ap7[02]0[0-2])
3576 subarch="avr32_ap"
3577 cpuflags="-mpart=$cpu"
3578 ;;
3579 ap)
3580 subarch="avr32_ap"
3581 cpuflags="-march=$cpu"
3582 ;;
3583 uc3[ab]*)
3584 subarch="avr32_uc"
3585 cpuflags="-mcpu=$cpu"
3586 ;;
3587 uc)
3588 subarch="avr32_uc"
3589 cpuflags="-march=$cpu"
3590 ;;
3591 esac
3592
3593 elif enabled bfin; then
3594
3595 cpuflags="-mcpu=$cpu"
3596
3597 elif enabled mips; then
3598
3599 cpuflags="-march=$cpu"
3600
3601 elif enabled ppc; then
3602
3603 disable ldbrx
3604
3605 case $(tolower $cpu) in
3606 601|ppc601|powerpc601)
3607 cpuflags="-mcpu=601"
3608 disable altivec
3609 ;;
3610 603*|ppc603*|powerpc603*)
3611 cpuflags="-mcpu=603"
3612 disable altivec
3613 ;;
3614 604*|ppc604*|powerpc604*)
3615 cpuflags="-mcpu=604"
3616 disable altivec
3617 ;;
3618 g3|75*|ppc75*|powerpc75*)
3619 cpuflags="-mcpu=750"
3620 disable altivec
3621 ;;
3622 g4|745*|ppc745*|powerpc745*)
3623 cpuflags="-mcpu=7450"
3624 disable vsx
3625 ;;
3626 74*|ppc74*|powerpc74*)
3627 cpuflags="-mcpu=7400"
3628 disable vsx
3629 ;;
3630 g5|970|ppc970|powerpc970)
3631 cpuflags="-mcpu=970"
3632 disable vsx
3633 ;;
3634 power[3-6]*)
3635 cpuflags="-mcpu=$cpu"
3636 disable vsx
3637 ;;
3638 power[7-8]*)
3639 cpuflags="-mcpu=$cpu"
3640 enable ldbrx
3641 ;;
3642 cell)
3643 cpuflags="-mcpu=cell"
3644 enable ldbrx
3645 disable vsx
3646 ;;
3647 e500mc)
3648 cpuflags="-mcpu=e500mc"
3649 disable altivec
3650 ;;
3651 e500v2)
3652 cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3653 disable altivec
3654 disable dcbzl
3655 ;;
3656 e500)
3657 cpuflags="-mcpu=8540 -mhard-float"
3658 disable altivec
3659 disable dcbzl
3660 ;;
3661 esac
3662
3663 elif enabled sparc; then
3664
3665 case $cpu in
3666 cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3667 cpuflags="-mcpu=$cpu"
3668 ;;
3669 ultrasparc*|niagara[234])
3670 cpuflags="-mcpu=$cpu"
3671 ;;
3672 esac
3673
3674 elif enabled x86; then
3675
3676 case $cpu in
3677 i[345]86|pentium)
3678 cpuflags="-march=$cpu"
3679 disable i686
3680 disable mmx
3681 ;;
3682 # targets that do NOT support nopl and conditional mov (cmov)
3683 pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3684 cpuflags="-march=$cpu"
3685 disable i686
3686 ;;
3687 # targets that do support nopl and conditional mov (cmov)
3688 i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3689 cpuflags="-march=$cpu"
3690 enable i686
3691 enable fast_cmov
3692 ;;
3693 # targets that do support conditional mov but on which it's slow
3694 pentium4|pentium4m|prescott|nocona)
3695 cpuflags="-march=$cpu"
3696 enable i686
3697 disable fast_cmov
3698 ;;
3699 esac
3700
3701 fi
3702
3703 if [ "$cpu" != generic ]; then
3704 add_cflags $cpuflags
3705 add_asflags $cpuflags
3706 test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3707 fi
3708
3709 # compiler sanity check
3710 check_exec <<EOF
3711 int main(void){ return 0; }
3712 EOF
3713 if test "$?" != 0; then
3714 echo "$cc is unable to create an executable file."
3715 if test -z "$cross_prefix" && ! enabled cross_compile ; then
3716 echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3717 echo "Only do this if you know what cross compiling means."
3718 fi
3719 die "C compiler test failed."
3720 fi
3721
3722 add_cppflags -D_ISOC99_SOURCE
3723
3724 # some compilers silently accept -std=c11, so we also need to check that the
3725 # version macro is defined properly
3726 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3727 add_cflags -std=c11
3728 else
3729 check_cflags -std=c99
3730 fi
3731
3732 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3733 #include <stdlib.h>
3734 EOF
3735 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3736 #include <stdlib.h>
3737 EOF
3738
3739 add_host_cppflags -D_ISOC99_SOURCE
3740 check_host_cflags -std=c99
3741 check_host_cflags -Wall
3742 check_host_cflags -O3
3743
3744 check_64bit(){
3745 arch32=$1
3746 arch64=$2
3747 expr=$3
3748 check_code cc "" "int test[2*($expr) - 1]" &&
3749 subarch=$arch64 || subarch=$arch32
3750 }
3751
3752 case "$arch" in
3753 aarch64|alpha|ia64)
3754 spic=$shared
3755 ;;
3756 mips)
3757 check_64bit mips mips64 '_MIPS_SIM > 1'
3758 spic=$shared
3759 ;;
3760 parisc)
3761 check_64bit parisc parisc64 'sizeof(void *) > 4'
3762 spic=$shared
3763 ;;
3764 ppc)
3765 check_64bit ppc ppc64 'sizeof(void *) > 4'
3766 spic=$shared
3767 ;;
3768 s390)
3769 check_64bit s390 s390x 'sizeof(void *) > 4'
3770 spic=$shared
3771 ;;
3772 sparc)
3773 check_64bit sparc sparc64 'sizeof(void *) > 4'
3774 spic=$shared
3775 ;;
3776 x86)
3777 check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3778 if test "$subarch" = "x86_64"; then
3779 spic=$shared
3780 fi
3781 ;;
3782 esac
3783
3784 enable $subarch
3785 enabled spic && enable_weak pic
3786
3787 # OS specific
3788 case $target_os in
3789 aix)
3790 SHFLAGS=-shared
3791 add_cppflags '-I\$(SRC_PATH)/compat/aix'
3792 enabled shared && add_ldflags -Wl,-brtl
3793 ;;
3794 android)
3795 disable symver
3796 enable section_data_rel_ro
3797 SLIB_INSTALL_NAME='$(SLIBNAME)'
3798 SLIB_INSTALL_LINKS=
3799 SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3800 ;;
3801 haiku)
3802 prefix_default="/boot/common"
3803 network_extralibs="-lnetwork"
3804 host_libs=
3805 ;;
3806 sunos)
3807 SHFLAGS='-shared -Wl,-h,$$(@F)'
3808 enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3809 network_extralibs="-lsocket -lnsl"
3810 # When using suncc to build, the Solaris linker will mark
3811 # an executable with each instruction set encountered by
3812 # the Solaris assembler. As our libraries contain their own
3813 # guards for processor-specific code, instead suppress
3814 # generation of the HWCAPS ELF section on Solaris x86 only.
3815 enabled_all suncc x86 &&
3816 echo "hwcap_1 = OVERRIDE;" > mapfile &&
3817 add_ldflags -Wl,-M,mapfile
3818 nm_default='nm -P -g'
3819 version_script='-M'
3820 VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3821 ;;
3822 netbsd)
3823 disable symver
3824 oss_indev_extralibs="-lossaudio"
3825 oss_outdev_extralibs="-lossaudio"
3826 ;;
3827 openbsd|bitrig)
3828 disable symver
3829 SHFLAGS='-shared'
3830 SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3831 SLIB_INSTALL_LINKS=
3832 oss_indev_extralibs="-lossaudio"
3833 oss_outdev_extralibs="-lossaudio"
3834 ;;
3835 dragonfly)
3836 disable symver
3837 ;;
3838 freebsd)
3839 ;;
3840 bsd/os)
3841 add_extralibs -lpoll -lgnugetopt
3842 ;;
3843 darwin)
3844 enabled ppc && add_asflags -force_cpusubtype_ALL
3845 SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3846 enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3847 add_ldflags -Wl,-dynamic,-search_paths_first
3848 SLIBSUF=".dylib"
3849 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3850 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3851 objformat="macho"
3852 enabled x86_64 && objformat="macho64"
3853 enabled_any pic shared ||
3854 { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3855 check_header dispatch/dispatch.h &&
3856 add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3857 ;;
3858 msys*)
3859 die "Native MSYS builds are discouraged, please use the MINGW environment."
3860 ;;
3861 mingw32*|mingw64*)
3862 if test $target_os = "mingw32ce"; then
3863 disable network
3864 else
3865 target_os=mingw32
3866 fi
3867 LIBTARGET=i386
3868 if enabled x86_64; then
3869 LIBTARGET="i386:x86-64"
3870 elif enabled arm; then
3871 LIBTARGET=arm-wince
3872 fi
3873 check_ldflags -Wl,--nxcompat
3874 check_ldflags -Wl,--dynamicbase
3875 shlibdir_default="$bindir_default"
3876 SLIBPREF=""
3877 SLIBSUF=".dll"
3878 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3879 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3880 SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3881 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3882 SLIB_INSTALL_LINKS=
3883 SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3884 SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3885 SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3886 objformat="win32"
3887 dlltool="${cross_prefix}dlltool"
3888 ranlib=:
3889 enable dos_paths
3890 ;;
3891 win32|win64)
3892 disable symver
3893 if enabled shared; then
3894 # Link to the import library instead of the normal static library
3895 # for shared libs.
3896 LD_LIB='%.lib'
3897 # Cannot build both shared and static libs with MSVC or icl.
3898 disable static
3899 fi
3900 shlibdir_default="$bindir_default"
3901 SLIBPREF=""
3902 SLIBSUF=".dll"
3903 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3904 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3905 SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3906 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3907 SLIB_INSTALL_LINKS=
3908 SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3909 SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3910 SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3911 objformat="win32"
3912 ranlib=:
3913 enable dos_paths
3914 ;;
3915 cygwin*)
3916 target_os=cygwin
3917 shlibdir_default="$bindir_default"
3918 SLIBPREF="cyg"
3919 SLIBSUF=".dll"
3920 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3921 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3922 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3923 SLIB_INSTALL_LINKS=
3924 SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3925 SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3926 objformat="win32"
3927 enable dos_paths
3928 ;;
3929 *-dos|freedos|opendos)
3930 network_extralibs="-lsocket"
3931 objformat="coff"
3932 enable dos_paths
3933 add_cppflags -U__STRICT_ANSI__
3934 ;;
3935 linux)
3936 enable dv1394
3937 enable section_data_rel_ro
3938 ;;
3939 irix*)
3940 target_os=irix
3941 ranlib="echo ignoring ranlib"
3942 ;;
3943 os/2*)
3944 ln_s="cp -f"
3945 objformat="aout"
3946 add_cppflags -D_GNU_SOURCE
3947 add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3948 SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3949 LIBSUF="_s.a"
3950 SLIBPREF=""
3951 SLIBSUF=".dll"
3952 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3953 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3954 SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3955 echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3956 echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3957 echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3958 emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3959 SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3960 emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3961 SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3962 enable dos_paths
3963 ;;
3964 gnu/kfreebsd)
3965 add_cppflags -D_BSD_SOURCE
3966 ;;
3967 gnu)
3968 ;;
3969 qnx)
3970 add_cppflags -D_QNX_SOURCE
3971 network_extralibs="-lsocket"
3972 ;;
3973 symbian)
3974 SLIBSUF=".dll"
3975 enable dos_paths
3976 add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3977 add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3978 add_ldflags -Wl,--target1-abs,--no-undefined \
3979 -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3980 -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3981 add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3982 -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3983 -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3984 ;;
3985 osf1)
3986 add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3987 ;;
3988 minix)
3989 ;;
3990 plan9)
3991 add_cppflags -D_C99_SNPRINTF_EXTENSION \
3992 -D_REENTRANT_SOURCE \
3993 -D_RESEARCH_SOURCE \
3994 -DFD_SETSIZE=96 \
3995 -DHAVE_SOCK_OPTS
3996 add_compat strtod.o strtod=avpriv_strtod
3997 network_extralibs='-lbsd'
3998 exeobjs=compat/plan9/main.o
3999 cp_f='cp'
4000 ;;
4001 none)
4002 ;;
4003 *)
4004 die "Unknown OS '$target_os'."
4005 ;;
4006 esac
4007
4008 # determine libc flavour
4009
4010 probe_libc(){
4011 pfx=$1
4012 pfx_no_=${pfx%_}
4013 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4014 if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4015 eval ${pfx}libc_type=uclibc
4016 add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4017 elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4018 eval ${pfx}libc_type=glibc
4019 add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4020 # MinGW headers can be installed on Cygwin, so check for newlib first.
4021 elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4022 eval ${pfx}libc_type=newlib
4023 add_${pfx}cppflags -U__STRICT_ANSI__
4024 # MinGW64 is backwards compatible with MinGW32, so check for it first.
4025 elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4026 eval ${pfx}libc_type=mingw64
4027 add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4028 eval test \$${pfx_no_}cc_type = "gcc" &&
4029 add_${pfx}cppflags -D__printf__=__gnu_printf__
4030 elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION" ||
4031 check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4032 eval ${pfx}libc_type=mingw32
4033 check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4034 (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4035 die "ERROR: MinGW32 runtime version must be >= 3.15."
4036 add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4037 check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4038 add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4039 eval test \$${pfx_no_}cc_type = "gcc" &&
4040 add_${pfx}cppflags -D__printf__=__gnu_printf__
4041 elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4042 eval ${pfx}libc_type=msvcrt
4043 if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4044 if [ "$pfx" = host_ ]; then
4045 add_host_cppflags -Dsnprintf=_snprintf
4046 else
4047 add_compat strtod.o strtod=avpriv_strtod
4048 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf \
4049 _snprintf=avpriv_snprintf \
4050 vsnprintf=avpriv_vsnprintf
4051 fi
4052 fi
4053 add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4054 # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4055 # 0x601 by default unless something else is set by the user.
4056 # This can easily lead to us detecting functions only present
4057 # in such new versions and producing binaries requiring windows 7.0.
4058 # Therefore explicitly set the default to XP unless the user has
4059 # set something else on the command line.
4060 # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4061 # family. For these cases, configure is free to use any functions
4062 # found in the SDK headers by default. (Alternatively, we could force
4063 # _WIN32_WINNT to 0x0602 in that case.)
4064 check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4065 { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4066 #ifdef WINAPI_FAMILY
4067 #include <winapifamily.h>
4068 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4069 #error not desktop
4070 #endif
4071 #endif
4072 EOF
4073 if [ "$pfx" = "" ]; then
4074 check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4075 fi
4076 elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4077 eval ${pfx}libc_type=klibc
4078 elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4079 eval ${pfx}libc_type=bionic
4080 elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4081 eval ${pfx}libc_type=solaris
4082 add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4083 else
4084 eval ${pfx}libc_type=default
4085 add_${pfx}cppflags -D_DEFAULT_SOURCE
4086 fi
4087 }
4088
4089 probe_libc
4090 test -n "$libc_type" && enable libc_$libc_type
4091 probe_libc host_
4092 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4093
4094 case $libc_type in
4095 bionic)
4096 add_compat strtod.o strtod=avpriv_strtod
4097 ;;
4098 esac
4099
4100 # hacks for compiler/libc/os combinations
4101
4102 if enabled_all tms470 libc_glibc; then
4103 CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4104 add_cppflags -D__USER_LABEL_PREFIX__=
4105 add_cppflags -D__builtin_memset=memset
4106 add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4107 add_cflags -pds=48 # incompatible redefinition of macro
4108 fi
4109
4110 if enabled_all ccc libc_glibc; then
4111 add_ldflags -Wl,-z,now # calls to libots crash without this
4112 fi
4113
4114 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4115 add_cppflags '-I\$(SRC_PATH)/compat/float'
4116
4117 esc(){
4118 echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4119 }
4120
4121 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4122
4123 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4124
4125 set_default $PATHS_LIST
4126 set_default nm
4127
4128 # we need to build at least one lib type
4129 if ! enabled_any static shared; then
4130 cat <<EOF
4131 At least one library type must be built.
4132 Specify --enable-static to build the static libraries or --enable-shared to
4133 build the shared libraries as well. To only build the shared libraries specify
4134 --disable-static in addition to --enable-shared.
4135 EOF
4136 exit 1
4137 fi
4138
4139 disabled optimizations || check_cflags -fomit-frame-pointer
4140
4141 enable_weak_pic() {
4142 disabled pic && return
4143 enable pic
4144 add_cppflags -DPIC
4145 case "$target_os" in
4146 mingw*|cygwin*)
4147 ;;
4148 *)
4149 add_cflags -fPIC
4150 ;;
4151 esac
4152 add_asflags -fPIC
4153 }
4154
4155 enabled pic && enable_weak_pic
4156
4157 check_cc <<EOF || die "Symbol mangling check failed."
4158 int ff_extern;
4159 EOF
4160 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4161 extern_prefix=${sym%%ff_extern*}
4162
4163 check_cc <<EOF && enable_weak inline_asm
4164 void foo(void) { __asm__ volatile ("" ::); }
4165 EOF
4166
4167 _restrict=
4168 for restrict_keyword in restrict __restrict__ __restrict; do
4169 check_cc <<EOF && _restrict=$restrict_keyword && break
4170 void foo(char * $restrict_keyword p);
4171 EOF
4172 done
4173
4174 check_cc <<EOF && enable pragma_deprecated
4175 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4176 EOF
4177
4178 check_cc <<EOF && enable attribute_packed
4179 struct { int x; } __attribute__((packed)) x;
4180 EOF
4181
4182 check_cc <<EOF && enable attribute_may_alias
4183 union { int x; } __attribute__((may_alias)) x;
4184 EOF
4185
4186 check_cc <<EOF || die "endian test failed"
4187 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4188 EOF
4189 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4190
4191 check_gas() {
4192 log "check_gas using '$as' as AS"
4193 # :vararg is used on aarch64, arm and ppc altivec
4194 check_as <<EOF || return 1
4195 .macro m n, y:vararg=0
4196 \n: .int \y
4197 .endm
4198 m x
4199 EOF
4200 # .altmacro is only used in arm asm
4201 ! enabled arm || check_as <<EOF || return 1
4202 .altmacro
4203 EOF
4204 enable gnu_as
4205 return 0
4206 }
4207
4208 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4209 nogas=:
4210 enabled_any arm aarch64 && nogas=die
4211 enabled_all ppc altivec && nogas=warn
4212 as_noop=-v
4213
4214 case $as_type in
4215 arm*) gaspp_as_type=armasm; as_noop=-h ;;
4216 gcc) gaspp_as_type=gas ;;
4217 *) gaspp_as_type=$as_type ;;
4218 esac
4219
4220 [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4221
4222 check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4223 gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4224
4225 if ! check_gas ; then
4226 as=${gas:=$as}
4227 check_gas || \
4228 $nogas "GNU assembler not found, install/update gas-preprocessor"
4229 fi
4230
4231 check_as <<EOF && enable as_func
4232 .func test
4233 .endfunc
4234 EOF
4235 fi
4236
4237 check_inline_asm inline_asm_labels '"1:\n"'
4238
4239 if enabled aarch64; then
4240 enabled armv8 && check_insn armv8 'prfm pldl1strm, [x0]'
4241 # internal assembler in clang 3.3 does not support this instruction
4242 enabled neon && check_insn neon 'ext v0.8B, v0.8B, v1.8B, #1'
4243 enabled vfp && check_insn vfp 'fmadd d0, d0, d1, d2'
4244
4245 map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4246
4247 elif enabled alpha; then
4248
4249 check_cflags -mieee
4250
4251 elif enabled arm; then
4252
4253 enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4254 check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4255 enabled thumb && check_cflags -mthumb || check_cflags -marm
4256
4257 if check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4258 enable vfp_args
4259 elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4260 enable vfp_args
4261 elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4262 case "${cross_prefix:-$cc}" in
4263 *hardfloat*) enable vfp_args; fpabi=vfp ;;
4264 *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4265 __asm__ (".eabi_attribute 28, 1");
4266 int main(void) { return 0; }
4267 EOF
4268 esac
4269 warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4270 fi
4271
4272 enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4273 enabled armv6 && check_insn armv6 'sadd16 r0, r0, r0'
4274 enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4275 enabled neon && check_insn neon 'vadd.i16 q0, q0, q0'
4276 enabled vfp && check_insn vfp 'fadds s0, s0, s0'
4277 enabled vfpv3 && check_insn vfpv3 'vmov.f32 s0, #1.0'
4278
4279 [ $target_os = linux ] || [ $target_os = android ] ||
4280 map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4281 $ARCH_EXT_LIST_ARM
4282
4283 check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4284
4285 check_as <<EOF && enable as_dn_directive
4286 ra .dn d0.i16
4287 .unreq ra
4288 EOF
4289 check_as <<EOF && enable as_fpu_directive
4290 .fpu neon
4291 EOF
4292
4293 # llvm's integrated assembler supports .object_arch from llvm 3.5
4294 [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4295 .object_arch armv4
4296 EOF
4297
4298 [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4299
4300 elif enabled mips; then
4301
4302 check_inline_asm loongson '"dmult.g $1, $2, $3"'
4303
4304 # make sure that only an instruction set is enabled
4305 disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4306
4307 if enabled mips64; then
4308 check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4309 check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4310 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4311 else
4312 check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4313 check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4314 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4315 fi
4316
4317 elif enabled parisc; then
4318
4319 if enabled gcc; then
4320 case $($cc -dumpversion) in
4321 4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4322 esac
4323 fi
4324
4325 elif enabled ppc; then
4326
4327 enable local_aligned_8 local_aligned_16 local_aligned_32
4328
4329 check_inline_asm dcbzl '"dcbzl 0, %0" :: "r"(0)'
4330 check_inline_asm ibm_asm '"add 0, 0, 0"'
4331 check_inline_asm ppc4xx '"maclhw r10, r11, r12"'
4332 check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4333
4334 # AltiVec flags: The FSF version of GCC differs from the Apple version
4335 if enabled altivec; then
4336 check_cflags -maltivec -mabi=altivec &&
4337 { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4338 check_cflags -faltivec
4339
4340 # check if our compiler supports Motorola AltiVec C API
4341 check_cc <<EOF || disable altivec
4342 $inc_altivec_h
4343 int main(void) {
4344 vector signed int v1 = (vector signed int) { 0 };
4345 vector signed int v2 = (vector signed int) { 1 };
4346 v1 = vec_add(v1, v2);
4347 return 0;
4348 }
4349 EOF
4350
4351 enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4352 fi
4353
4354 if enabled vsx; then
4355 check_cflags -mvsx &&
4356 check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4357 fi
4358
4359 if enabled power8; then
4360 check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4361 fi
4362
4363 elif enabled x86; then
4364
4365 check_builtin rdtsc intrin.h "__rdtsc()"
4366 check_builtin mm_empty mmintrin.h "_mm_empty()"
4367
4368 enable local_aligned_8 local_aligned_16 local_aligned_32
4369
4370 # check whether EBP is available on x86
4371 # As 'i' is stored on the stack, this program will crash
4372 # if the base pointer is used to access it because the
4373 # base pointer is cleared in the inline assembly code.
4374 check_exec_crash <<EOF && enable ebp_available
4375 volatile int i=0;
4376 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");