configure: Allow detecting and using LLVM lld-link as linker for windows
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18 echo "Trying shell $1"
19 type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30 echo "Broken shell detected. Trying alternatives."
31 export FF_CONF_EXEC
32 if test "0$FF_CONF_EXEC" -lt 1; then
33 FF_CONF_EXEC=1
34 try_exec bash "$0" "$@"
35 fi
36 if test "0$FF_CONF_EXEC" -lt 2; then
37 FF_CONF_EXEC=2
38 try_exec ksh "$0" "$@"
39 fi
40 if test "0$FF_CONF_EXEC" -lt 3; then
41 FF_CONF_EXEC=3
42 try_exec /usr/xpg4/bin/sh "$0" "$@"
43 fi
44 echo "No compatible shell script interpreter found."
45 echo "This configure script requires a POSIX-compatible shell"
46 echo "such as bash or ksh."
47 echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48 echo "Instead, install a working POSIX-compatible shell."
49 echo "Disabling this configure test will create a broken Libav."
50 if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51 echo "This bash version ($BASH_VERSION) is broken on your platform."
52 echo "Upgrade to a later version if available."
53 fi
54 exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60 cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65 --help print this message
66 --list-decoders show all available decoders
67 --list-encoders show all available encoders
68 --list-hwaccels show all available hardware accelerators
69 --list-demuxers show all available demuxers
70 --list-muxers show all available muxers
71 --list-parsers show all available parsers
72 --list-protocols show all available protocols
73 --list-bsfs show all available bitstream filters
74 --list-indevs show all available input devices
75 --list-outdevs show all available output devices
76 --list-filters show all available filters
77
78 Standard options:
79 --logfile=FILE log tests and output to FILE [config.log]
80 --disable-logging do not log configure debug information
81 --prefix=PREFIX install in PREFIX [$prefix]
82 --bindir=DIR install binaries in DIR [PREFIX/bin]
83 --datadir=DIR install data files in DIR [PREFIX/share/avconv]
84 --docdir=DIR install documentation in DIR [PREFIX/share/doc/libav]
85 --libdir=DIR install libs in DIR [PREFIX/lib]
86 --shlibdir=DIR install shared libs in DIR [PREFIX/lib]
87 --incdir=DIR install includes in DIR [PREFIX/include]
88 --mandir=DIR install man page in DIR [PREFIX/share/man]
89 --enable-rpath use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92 --enable-gpl allow use of GPL code, the resulting libs
93 and binaries will be under GPL [no]
94 --enable-version3 upgrade (L)GPL to version 3 [no]
95 --enable-nonfree allow use of nonfree code, the resulting libs
96 and binaries will be unredistributable [no]
97
98 Configuration options:
99 --disable-static do not build static libraries [no]
100 --enable-shared build shared libraries [no]
101 --enable-small optimize for size instead of speed
102 --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103 --enable-gray enable full grayscale support (slower color)
104 --disable-swscale-alpha disable alpha channel support in swscale
105 --disable-all disable building components, libraries and programs
106
107 Program options:
108 --disable-programs do not build command line programs
109 --disable-avconv disable avconv build
110 --disable-avplay disable avplay build
111 --disable-avprobe disable avprobe build
112 --disable-avserver deprecated, does nothing
113
114 Component options:
115 --disable-doc do not build documentation
116 --disable-avdevice disable libavdevice build
117 --disable-avcodec disable libavcodec build
118 --disable-avformat disable libavformat build
119 --disable-avutil disable libavutil build
120 --disable-swscale disable libswscale build
121 --disable-avfilter disable video filter support [no]
122 --disable-avresample disable libavresample build [no]
123 --disable-pthreads disable pthreads [auto]
124 --disable-w32threads disable Win32 threads [auto]
125 --disable-network disable network support [no]
126 --disable-dct disable DCT code
127 --disable-error-resilience disable error resilience code
128 --disable-lsp disable LSP code
129 --disable-lzo disable LZO decoder code
130 --disable-mdct disable MDCT code
131 --disable-rdft disable RDFT code
132 --disable-fft disable FFT code
133 --disable-faan disable floating point AAN (I)DCT code
134
135 Individual component options:
136 --disable-everything disable all components listed below
137 --disable-encoder=NAME disable encoder NAME
138 --enable-encoder=NAME enable encoder NAME
139 --disable-encoders disable all encoders
140 --disable-decoder=NAME disable decoder NAME
141 --enable-decoder=NAME enable decoder NAME
142 --disable-decoders disable all decoders
143 --disable-hwaccel=NAME disable hwaccel NAME
144 --enable-hwaccel=NAME enable hwaccel NAME
145 --disable-hwaccels disable all hwaccels
146 --disable-muxer=NAME disable muxer NAME
147 --enable-muxer=NAME enable muxer NAME
148 --disable-muxers disable all muxers
149 --disable-demuxer=NAME disable demuxer NAME
150 --enable-demuxer=NAME enable demuxer NAME
151 --disable-demuxers disable all demuxers
152 --enable-parser=NAME enable parser NAME
153 --disable-parser=NAME disable parser NAME
154 --disable-parsers disable all parsers
155 --enable-bsf=NAME enable bitstream filter NAME
156 --disable-bsf=NAME disable bitstream filter NAME
157 --disable-bsfs disable all bitstream filters
158 --enable-protocol=NAME enable protocol NAME
159 --disable-protocol=NAME disable protocol NAME
160 --disable-protocols disable all protocols
161 --enable-indev=NAME enable input device NAME
162 --disable-indev=NAME disable input device NAME
163 --disable-indevs disable input devices
164 --enable-outdev=NAME enable output device NAME
165 --disable-outdev=NAME disable output device NAME
166 --disable-outdevs disable output devices
167 --disable-devices disable all devices
168 --enable-filter=NAME enable filter NAME
169 --disable-filter=NAME disable filter NAME
170 --disable-filters disable all filters
171
172 External library support:
173
174 Using any of the following switches will allow Libav to link to the
175 corresponding external library. All the components depending on that library
176 will become enabled, if all their other dependencies are met and they are not
177 explicitly disabled. E.g. --enable-libwavpack will enable linking to
178 libwavpack and allow the libwavpack encoder to be built, unless it is
179 specifically disabled with --disable-encoder=libwavpack.
180
181 Note that only the system libraries are auto-detected. All the other external
182 libraries must be explicitly enabled.
183
184 Also note that the following help text describes the purpose of the libraries
185 themselves, not all their features will necessarily be usable by Libav.
186
187 --enable-avisynth video frameserver
188 --enable-bzlib bzip2 compression [autodetect]
189 --enable-frei0r video filtering plugins
190 --enable-gnutls crypto
191 --enable-libbs2b Bauer stereophonic-to-binaural DSP
192 --enable-libcdio audio CD input
193 --enable-libdc1394 IEEE 1394/Firewire camera input
194 --enable-libdcadec DCA audio decoding
195 --enable-libfaac AAC audio encoding
196 --enable-libfdk-aac AAC audio encoding/decoding
197 --enable-libfontconfig font configuration and management
198 --enable-libfreetype font rendering
199 --enable-libgsm GSM audio encoding/decoding
200 --enable-libilbc ILBC audio encoding/decoding
201 --enable-libkvazaar HEVC video encoding
202 --enable-libmp3lame MP3 audio encoding
203 --enable-libopencore-amrnb AMR-NB audio encoding/decoding
204 --enable-libopencore-amrwb AMR-WB audio decoding
205 --enable-libopencv computer vision
206 --enable-libopenh264 H.264 video encoding/decoding
207 --enable-libopenjpeg JPEG 2000 image encoding/decoding
208 --enable-libopus Opus audio encoding/decoding
209 --enable-libpulse Pulseaudio sound server
210 --enable-librtmp RTMP streaming
211 --enable-libschroedinger Dirac video encoding/decoding
212 --enable-libsnappy snappy compression
213 --enable-libspeex Speex audio encoding/decoding
214 --enable-libtheora Theora video encoding/decoding
215 --enable-libtwolame MP2 audio encoding
216 --enable-libvo-aacenc AAC audio encoding
217 --enable-libvo-amrwbenc AMR-WB audio encoding
218 --enable-libvorbis Vorbis audio encoding/decoding
219 --enable-libvpx VP* video encoding/decoding
220 --enable-libwavpack Wavpack audio encoding/decoding
221 --enable-libwebp WebP image encoding/decoding
222 --enable-libx264 H.264 video encoding
223 --enable-libx265 HEVC video encoding
224 --enable-libxavs Chinese AVS video encoding
225 --enable-libxcb X window system protocol communication
226 --enable-libxcb-shm X11 shm communication [auto]
227 --enable-libxcb-xfixes X11 mouse rendering [auto]
228 --enable-libxvid MPEG-4 ASP video encoding
229 --enable-openssl crypto
230 --enable-x11grab X11 grabbing through xlib (legacy, use xcb instead)
231 --enable-zlib compression [autodetect]
232
233 The following libraries provide various hardware acceleration features:
234 --enable-cuda Nvidia CUDA (dynamically linked)
235 --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
236 --enable-dxva2 Microsoft DirectX 9 video acceleration [auto]
237 --enable-libmfx Intel MediaSDK (AKA Quick Sync Video)
238 --enable-libnpp Nvidia CUDA processing
239 --enable-mmal Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
240 --enable-nvenc Nvidia video encoding
241 --enable-omx OpenMAX IL
242 --enable-omx-rpi OpenMAX IL for Raspberry Pi
243 --enable-vaapi Video Acceleration API (mainly Unix/Intel)
244 --enable-vda Apple Video Decode Acceleration [auto]
245 --enable-vdpau Nvidia Video Decode and Presentation API for Unix [auto]
246
247 Toolchain options:
248 --arch=ARCH select architecture [$arch]
249 --cpu=CPU select the minimum required CPU (affects
250 instruction selection, may crash on older CPUs)
251 --cross-prefix=PREFIX use PREFIX for compilation tools [$cross_prefix]
252 --enable-cross-compile assume a cross-compiler is used
253 --sysroot=PATH root of cross-build tree
254 --sysinclude=PATH location of cross-build system headers
255 --target-os=OS compiler targets OS [$target_os]
256 --target-exec=CMD command to run executables on target
257 --target-path=DIR path to view of build directory on target
258 --target-samples=DIR path to samples directory on target
259 --toolchain=NAME set tool defaults according to NAME
260 --nm=NM use nm tool
261 --ar=AR use archive tool AR [$ar_default]
262 --as=AS use assembler AS [$as_default]
263 --cc=CC use C compiler CC [$cc_default]
264 --objcc=OCC use ObjC compiler OCC [$cc_default]
265 --dep-cc=DEPCC use dependency generator DEPCC [$cc_default]
266 --ld=LD use linker LD
267 --pkg-config=PKGCONFIG use pkg-config tool PKGCONFIG [$pkg_config_default]
268 --pkg-config-flags=FLAGS pass additional flags to pkgconf []
269 --host-cc=HOSTCC use host C compiler HOSTCC
270 --host-cflags=HCFLAGS use HCFLAGS when compiling for host
271 --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
272 --host-ld=HOSTLD use host linker HOSTLD
273 --host-ldflags=HLDFLAGS use HLDFLAGS when linking for host
274 --host-libs=HLIBS use libs HLIBS when linking for host
275 --host-os=OS compiler host OS [$target_os]
276 --extra-cflags=ECFLAGS add ECFLAGS to CFLAGS [$CFLAGS]
277 --extra-objcflags=FLAGS add FLAGS to OBJCFLAGS [$CFLAGS]
278 --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
279 --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
280 --extra-libs=ELIBS add ELIBS [$ELIBS]
281 --extra-version=STRING version string suffix []
282 --optflags=OPTFLAGS override optimization-related compiler flags
283 --build-suffix=SUFFIX library name suffix []
284 --enable-pic build position-independent code
285 --enable-thumb compile for Thumb instruction set
286 --enable-lto use link-time optimization
287 --env="ENV=override" override the environment variables
288
289 Advanced options (experts only):
290 --malloc-prefix=PREFIX prefix malloc and related names with PREFIX
291 --custom-allocator=NAME use a supported custom allocator
292 --disable-symver disable symbol versioning
293 --enable-hardcoded-tables use hardcoded tables instead of runtime generation
294 --disable-safe-bitstream-reader
295 disable buffer boundary checking in bitreaders
296 (faster, but may crash)
297 --enable-memalign-hack emulate memalign, interferes with memory debuggers
298 --enable-sram allow use of on-chip SRAM
299
300 Optimization options (experts only):
301 --disable-asm disable all assembly optimizations
302 --disable-altivec disable AltiVec optimizations
303 --disable-vsx disable VSX optimizations
304 --disable-power8 disable POWER8 optimizations
305 --disable-amd3dnow disable 3DNow! optimizations
306 --disable-amd3dnowext disable 3DNow! extended optimizations
307 --disable-mmx disable MMX optimizations
308 --disable-mmxext disable MMXEXT optimizations
309 --disable-sse disable SSE optimizations
310 --disable-sse2 disable SSE2 optimizations
311 --disable-sse3 disable SSE3 optimizations
312 --disable-ssse3 disable SSSE3 optimizations
313 --disable-sse4 disable SSE4 optimizations
314 --disable-sse42 disable SSE4.2 optimizations
315 --disable-avx disable AVX optimizations
316 --disable-xop disable XOP optimizations
317 --disable-fma3 disable FMA3 optimizations
318 --disable-fma4 disable FMA4 optimizations
319 --disable-avx2 disable AVX2 optimizations
320 --disable-armv5te disable armv5te optimizations
321 --disable-armv6 disable armv6 optimizations
322 --disable-armv6t2 disable armv6t2 optimizations
323 --disable-vfp disable VFP optimizations
324 --disable-neon disable NEON optimizations
325 --disable-inline-asm disable use of inline assembly
326 --disable-yasm disable use of nasm/yasm assembly
327
328 Developer options (useful when working on Libav itself):
329 --disable-debug disable debugging symbols
330 --enable-debug=LEVEL set the debug level [$debuglevel]
331 --disable-optimizations disable compiler optimizations
332 --enable-extra-warnings enable more compiler warnings
333 --samples=PATH location of test samples for FATE, if not set use
334 \$LIBAV_SAMPLES at make invocation time.
335 --enable-neon-clobber-test check NEON registers for clobbering (should be
336 used only for debugging purposes)
337 --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
338 should be used only for debugging purposes)
339 --enable-random randomly enable/disable components
340 --disable-random
341 --enable-random=LIST randomly enable/disable specific components or
342 --disable-random=LIST component groups. LIST is a comma-separated list
343 of NAME[:PROB] entries where NAME is a component
344 (group) and PROB the probability associated with
345 NAME (default 0.5).
346 --random-seed=VALUE seed value for --enable/disable-random
347 --disable-valgrind-backtrace do not print a backtrace under Valgrind
348 (only applies to --disable-optimizations builds)
349
350 NOTE: Object files are built at the place where configure is launched.
351 EOF
352 exit 0
353 }
354
355 quotes='""'
356
357 log(){
358 echo "$@" >> $logfile
359 }
360
361 log_file(){
362 log BEGIN $1
363 i=1
364 while read line; do
365 printf '%5s %s\n' "${i}" "${line}"
366 i=$(($i+1))
367 done < $1 >> $logfile
368 log END $1
369 }
370
371 echolog(){
372 log "$@"
373 echo "$@"
374 }
375
376 warn(){
377 log "WARNING: $*"
378 WARNINGS="${WARNINGS}WARNING: $*\n"
379 }
380
381 die(){
382 echolog "$@"
383 cat <<EOF
384
385 If you think configure made a mistake, make sure you are using the latest
386 version from Git. If the latest version fails, report the problem to the
387 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
388 EOF
389 if disabled logging; then
390 cat <<EOF
391 Rerun configure with logging enabled (do not use --disable-logging), and
392 include the log this produces with your report.
393 EOF
394 else
395 cat <<EOF
396 Include the log file "$logfile" produced by configure as this will help
397 solving the problem.
398 EOF
399 fi
400 exit 1
401 }
402
403 # Avoid locale weirdness, besides we really just want to translate ASCII.
404 toupper(){
405 echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
406 }
407
408 tolower(){
409 echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
410 }
411
412 c_escape(){
413 echo "$*" | sed 's/["\\]/\\\0/g'
414 }
415
416 sh_quote(){
417 v=$(echo "$1" | sed "s/'/'\\\\''/g")
418 test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
419 echo "$v"
420 }
421
422 cleanws(){
423 echo "$@" | sed 's/^ *//;s/ */ /g;s/ *$//'
424 }
425
426 filter(){
427 pat=$1
428 shift
429 for v; do
430 eval "case $v in $pat) echo $v ;; esac"
431 done
432 }
433
434 filter_out(){
435 pat=$1
436 shift
437 for v; do
438 eval "case $v in $pat) ;; *) echo $v ;; esac"
439 done
440 }
441
442 map(){
443 m=$1
444 shift
445 for v; do eval $m; done
446 }
447
448 add_suffix(){
449 suffix=$1
450 shift
451 for v; do echo ${v}${suffix}; done
452 }
453
454 set_all(){
455 value=$1
456 shift
457 for var in $*; do
458 eval $var=$value
459 done
460 }
461
462 set_weak(){
463 value=$1
464 shift
465 for var; do
466 eval : \${$var:=$value}
467 done
468 }
469
470 sanitize_var_name(){
471 echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
472 }
473
474 set_safe(){
475 var=$1
476 shift
477 eval $(sanitize_var_name "$var")='$*'
478 }
479
480 get_safe(){
481 eval echo \$$(sanitize_var_name "$1")
482 }
483
484 pushvar(){
485 for pvar in $*; do
486 eval level=\${${pvar}_level:=0}
487 eval ${pvar}_${level}="\$$pvar"
488 eval ${pvar}_level=$(($level+1))
489 done
490 }
491
492 popvar(){
493 for pvar in $*; do
494 eval level=\${${pvar}_level:-0}
495 test $level = 0 && continue
496 eval level=$(($level-1))
497 eval $pvar="\${${pvar}_${level}}"
498 eval ${pvar}_level=$level
499 eval unset ${pvar}_${level}
500 done
501 }
502
503 enable(){
504 set_all yes $*
505 }
506
507 disable(){
508 set_all no $*
509 }
510
511 enable_weak(){
512 set_weak yes $*
513 }
514
515 disable_weak(){
516 set_weak no $*
517 }
518
519 enable_safe(){
520 for var; do
521 enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
522 done
523 }
524
525 disable_safe(){
526 for var; do
527 disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
528 done
529 }
530
531 do_enable_deep(){
532 for var; do
533 enabled $var && continue
534 eval sel="\$${var}_select"
535 eval sgs="\$${var}_suggest"
536 pushvar var sgs
537 enable_deep $sel
538 popvar sgs
539 enable_deep_weak $sgs
540 popvar var
541 done
542 }
543
544 enable_deep(){
545 do_enable_deep $*
546 enable $*
547 }
548
549 enable_deep_weak(){
550 for var; do
551 disabled $var && continue
552 pushvar var
553 do_enable_deep $var
554 popvar var
555 enable_weak $var
556 done
557 }
558
559 enabled(){
560 test "${1#!}" = "$1" && op== || op=!=
561 eval test "x\$${1#!}" $op "xyes"
562 }
563
564 disabled(){
565 test "${1#!}" = "$1" && op== || op=!=
566 eval test "x\$${1#!}" $op "xno"
567 }
568
569 enabled_all(){
570 for opt; do
571 enabled $opt || return 1
572 done
573 }
574
575 disabled_all(){
576 for opt; do
577 disabled $opt || return 1
578 done
579 }
580
581 enabled_any(){
582 for opt; do
583 enabled $opt && return 0
584 done
585 }
586
587 disabled_any(){
588 for opt; do
589 disabled $opt && return 0
590 done
591 return 1
592 }
593
594 set_default(){
595 for opt; do
596 eval : \${$opt:=\$${opt}_default}
597 done
598 }
599
600 is_in(){
601 value=$1
602 shift
603 for var in $*; do
604 [ $var = $value ] && return 0
605 done
606 return 1
607 }
608
609 do_check_deps(){
610 for cfg; do
611 cfg="${cfg#!}"
612 enabled ${cfg}_checking && die "Circular dependency for $cfg."
613 disabled ${cfg}_checking && continue
614 enable ${cfg}_checking
615 append allopts $cfg
616
617 eval dep_all="\$${cfg}_deps"
618 eval dep_any="\$${cfg}_deps_any"
619 eval dep_sel="\$${cfg}_select"
620 eval dep_sgs="\$${cfg}_suggest"
621 eval dep_ifa="\$${cfg}_if"
622 eval dep_ifn="\$${cfg}_if_any"
623
624 pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
625 do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
626 popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
627
628 [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
629 [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
630 enabled_all $dep_all || disable $cfg
631 enabled_any $dep_any || disable $cfg
632 disabled_any $dep_sel && disable $cfg
633
634 if enabled $cfg; then
635 enable_deep $dep_sel
636 enable_deep_weak $dep_sgs
637 fi
638
639 disable ${cfg}_checking
640 done
641 }
642
643 check_deps(){
644 unset allopts
645
646 do_check_deps "$@"
647
648 for cfg in $allopts; do
649 enabled $cfg || continue
650 eval dep_extralibs="\$${cfg}_extralibs"
651 test -n "$dep_extralibs" && add_extralibs $dep_extralibs
652 done
653 }
654
655 print_config(){
656 pfx=$1
657 files=$2
658 shift 2
659 map 'eval echo "$v \${$v:-no}"' "$@" |
660 awk "BEGIN { split(\"$files\", files) }
661 {
662 c = \"$pfx\" toupper(\$1);
663 v = \$2;
664 sub(/yes/, 1, v);
665 sub(/no/, 0, v);
666 for (f in files) {
667 file = files[f];
668 if (file ~ /\\.h\$/) {
669 printf(\"#define %s %d\\n\", c, v) >>file;
670 } else if (file ~ /\\.asm\$/) {
671 printf(\"%%define %s %d\\n\", c, v) >>file;
672 } else if (file ~ /\\.mak\$/) {
673 n = -v ? \"\" : \"!\";
674 printf(\"%s%s=yes\\n\", n, c) >>file;
675 }
676 }
677 }"
678 }
679
680 print_enabled(){
681 suf=$1
682 shift
683 for v; do
684 enabled $v && printf "%s\n" ${v%$suf}
685 done
686 }
687
688 append(){
689 var=$1
690 shift
691 eval "$var=\"\$$var $*\""
692 }
693
694 prepend(){
695 var=$1
696 shift
697 eval "$var=\"$* \$$var\""
698 }
699
700 unique(){
701 var=$1
702 uniq_list=""
703 for tok in $(eval echo \$$var); do
704 uniq_list="$(filter_out $tok $uniq_list) $tok"
705 done
706 eval "$var=\"${uniq_list}\""
707 }
708
709 add_cppflags(){
710 append CPPFLAGS "$@"
711 }
712
713 add_cflags(){
714 append CFLAGS $($cflags_filter "$@")
715 }
716
717 add_asflags(){
718 append ASFLAGS $($asflags_filter "$@")
719 }
720
721 add_objcflags(){
722 append OBJCFLAGS $($objcflags_filter "$@")
723 }
724
725 add_ldflags(){
726 append LDFLAGS $($ldflags_filter "$@")
727 }
728
729 add_ldexeflags(){
730 append LDEXEFLAGS $($ldflags_filter "$@")
731 }
732
733 add_stripflags(){
734 append STRIPFLAGS "$@"
735 }
736
737 add_extralibs(){
738 prepend extralibs $($ldflags_filter "$@")
739 }
740
741 add_host_cppflags(){
742 append host_cppflags "$@"
743 }
744
745 add_host_cflags(){
746 append host_cflags $($host_cflags_filter "$@")
747 }
748
749 add_host_ldflags(){
750 append host_ldflags $($host_ldflags_filter "$@")
751 }
752
753 add_compat(){
754 append compat_objs $1
755 shift
756 map 'add_cppflags -D$v' "$@"
757 }
758
759 check_cmd(){
760 log "$@"
761 "$@" >> $logfile 2>&1
762 }
763
764 cc_o(){
765 eval printf '%s\\n' $CC_O
766 }
767
768 cc_e(){
769 eval printf '%s\\n' $CC_E
770 }
771
772 check_cc(){
773 log check_cc "$@"
774 cat > $TMPC
775 log_file $TMPC
776 check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
777 }
778
779 check_objcc(){
780 log check_objcc "$@"
781 cat > $TMPC
782 log_file $TMPC
783 check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
784 }
785
786 check_cpp(){
787 log check_cpp "$@"
788 cat > $TMPC
789 log_file $TMPC
790 check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
791 }
792
793 as_o(){
794 eval printf '%s\\n' $AS_O
795 }
796
797 check_as(){
798 log check_as "$@"
799 cat > $TMPS
800 log_file $TMPS
801 check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
802 }
803
804 check_inline_asm(){
805 log check_inline_asm "$@"
806 name="$1"
807 code="$2"
808 shift 2
809 disable $name
810 check_cc "$@" <<EOF && enable $name
811 void foo(void){ __asm__ volatile($code); }
812 EOF
813 }
814
815 check_insn(){
816 log check_insn "$@"
817 check_inline_asm ${1}_inline "\"$2\""
818 echo "$2" | check_as && enable ${1}_external || disable ${1}_external
819 }
820
821 check_yasm(){
822 log check_yasm "$@"
823 echo "$1" > $TMPS
824 log_file $TMPS
825 shift 1
826 check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
827 }
828
829 ld_o(){
830 eval printf '%s\\n' $LD_O
831 }
832
833 check_ld(){
834 log check_ld "$@"
835 flags=$(filter_out '-l*' "$@")
836 libs=$(filter '-l*' "$@")
837 check_cc $($cflags_filter $flags) || return
838 flags=$($ldflags_filter $flags)
839 libs=$($ldflags_filter $libs)
840 check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
841 }
842
843 print_include(){
844 hdr=$1
845 test "${hdr%.h}" = "${hdr}" &&
846 echo "#include $hdr" ||
847 echo "#include <$hdr>"
848 }
849
850 check_code(){
851 log check_code "$@"
852 check=$1
853 headers=$2
854 code=$3
855 shift 3
856 {
857 for hdr in $headers; do
858 print_include $hdr
859 done
860 echo "int main(void) { $code; return 0; }"
861 } | check_$check "$@"
862 }
863
864 check_cppflags(){
865 log check_cppflags "$@"
866 check_cc "$@" <<EOF && append CPPFLAGS "$@"
867 int x;
868 EOF
869 }
870
871 test_cflags(){
872 log test_cflags "$@"
873 set -- $($cflags_filter "$@")
874 check_cc "$@" <<EOF
875 int x;
876 EOF
877 }
878
879 check_cflags(){
880 log check_cflags "$@"
881 test_cflags "$@" && add_cflags "$@"
882 }
883
884 test_objcflags(){
885 log test_cflags "$@"
886 set -- $($cflags_filter "$@")
887 check_objcc "$@" <<EOF
888 int x;
889 EOF
890 }
891
892 check_objcflags(){
893 log check_cflags "$@"
894 test_objcflags "$@" && add_objcflags "$@"
895 }
896
897 test_ldflags(){
898 log test_ldflags "$@"
899 check_ld "$@" <<EOF
900 int main(void){ return 0; }
901 EOF
902 }
903
904 check_ldflags(){
905 log check_ldflags "$@"
906 test_ldflags "$@" && add_ldflags "$@"
907 }
908
909 test_stripflags(){
910 log test_stripflags "$@"
911 # call check_cc to get a fresh TMPO
912 check_cc <<EOF
913 int main(void) { return 0; }
914 EOF
915 check_cmd $strip $STRIPFLAGS "$@" $TMPO
916 }
917
918 check_stripflags(){
919 log check_stripflags "$@"
920 test_stripflags "$@" && add_stripflags "$@"
921 }
922
923 check_header(){
924 log check_header "$@"
925 header=$1
926 shift
927 disable_safe $header
928 check_cpp "$@" <<EOF && enable_safe $header
929 #include <$header>
930 int x;
931 EOF
932 }
933
934 check_func(){
935 log check_func "$@"
936 func=$1
937 shift
938 disable $func
939 check_ld "$@" <<EOF && enable $func
940 extern int $func();
941 int main(void){ $func(); }
942 EOF
943 }
944
945 check_mathfunc(){
946 log check_mathfunc "$@"
947 func=$1
948 narg=$2
949 shift 2
950 test $narg = 2 && args="f, g" || args="f"
951 disable $func
952 check_ld "$@" <<EOF && enable $func
953 #include <math.h>
954 float foo(float f, float g) { return $func($args); }
955 int main(void){ return 0; }
956 EOF
957 }
958
959 check_func_headers(){
960 log check_func_headers "$@"
961 headers=$1
962 funcs=$2
963 shift 2
964 {
965 for hdr in $headers; do
966 print_include $hdr
967 done
968 for func in $funcs; do
969 echo "long check_$func(void) { return (long) $func; }"
970 done
971 echo "int main(void) { return 0; }"
972 } | check_ld "$@" && enable $funcs && enable_safe $headers
973 }
974
975 check_cpp_condition(){
976 log check_cpp_condition "$@"
977 header=$1
978 condition=$2
979 shift 2
980 check_cpp "$@" <<EOF
981 #include <$header>
982 #if !($condition)
983 #error "unsatisfied condition: $condition"
984 #endif
985 EOF
986 }
987
988 check_lib(){
989 log check_lib "$@"
990 header="$1"
991 func="$2"
992 shift 2
993 check_header $header && check_func $func "$@" && add_extralibs "$@"
994 }
995
996 check_lib2(){
997 log check_lib2 "$@"
998 headers="$1"
999 funcs="$2"
1000 shift 2
1001 check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1002 }
1003
1004 check_pkg_config(){
1005 log check_pkg_config "$@"
1006 pkg="$1"
1007 headers="$2"
1008 funcs="$3"
1009 shift 3
1010 check_cmd $pkg_config --exists --print-errors $pkg || return
1011 pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1012 pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1013 check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1014 set_safe "${pkg}_cflags" $pkg_cflags &&
1015 set_safe "${pkg}_libs" $pkg_libs
1016 }
1017
1018 check_exec(){
1019 check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1020 }
1021
1022 check_exec_crash(){
1023 code=$(cat)
1024
1025 # exit() is not async signal safe. _Exit (C99) and _exit (POSIX)
1026 # are safe but may not be available everywhere. Thus we use
1027 # raise(SIGTERM) instead. The check is run in a subshell so we
1028 # can redirect the "Terminated" message from the shell. SIGBUS
1029 # is not defined by standard C so it is used conditionally.
1030
1031 (check_exec "$@") >> $logfile 2>&1 <<EOF
1032 #include <signal.h>
1033 static void sighandler(int sig){
1034 raise(SIGTERM);
1035 }
1036 int foo(void){
1037 $code
1038 }
1039 int (*func_ptr)(void) = foo;
1040 int main(void){
1041 signal(SIGILL, sighandler);
1042 signal(SIGFPE, sighandler);
1043 signal(SIGSEGV, sighandler);
1044 #ifdef SIGBUS
1045 signal(SIGBUS, sighandler);
1046 #endif
1047 return func_ptr();
1048 }
1049 EOF
1050 }
1051
1052 check_type(){
1053 log check_type "$@"
1054 headers=$1
1055 type=$2
1056 shift 2
1057 disable_safe "$type"
1058 check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1059 }
1060
1061 check_struct(){
1062 log check_struct "$@"
1063 headers=$1
1064 struct=$2
1065 member=$3
1066 shift 3
1067 disable_safe "${struct}_${member}"
1068 check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1069 enable_safe "${struct}_${member}"
1070 }
1071
1072 check_builtin(){
1073 log check_builtin "$@"
1074 name=$1
1075 headers=$2
1076 builtin=$3
1077 shift 3
1078 disable "$name"
1079 check_code ld "$headers" "$builtin" "$@" && enable "$name"
1080 }
1081
1082 check_compile_assert(){
1083 log check_compile_assert "$@"
1084 name=$1
1085 headers=$2
1086 condition=$3
1087 shift 3
1088 disable "$name"
1089 check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1090 }
1091
1092 require(){
1093 name="$1"
1094 header="$2"
1095 func="$3"
1096 shift 3
1097 check_lib $header $func "$@" || die "ERROR: $name not found"
1098 }
1099
1100 require2(){
1101 name="$1"
1102 headers="$2"
1103 func="$3"
1104 shift 3
1105 check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1106 }
1107
1108 require_pkg_config(){
1109 pkg="$1"
1110 check_pkg_config "$@" || die "ERROR: $pkg not found"
1111 add_cflags $(get_safe "${pkg}_cflags")
1112 add_extralibs $(get_safe "${pkg}_libs")
1113 }
1114
1115 hostcc_e(){
1116 eval printf '%s\\n' $HOSTCC_E
1117 }
1118
1119 hostcc_o(){
1120 eval printf '%s\\n' $HOSTCC_O
1121 }
1122
1123 check_host_cc(){
1124 log check_host_cc "$@"
1125 cat > $TMPC
1126 log_file $TMPC
1127 check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1128 }
1129
1130 check_host_cpp(){
1131 log check_host_cpp "$@"
1132 cat > $TMPC
1133 log_file $TMPC
1134 check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1135 }
1136
1137 check_host_cppflags(){
1138 log check_host_cppflags "$@"
1139 check_host_cc "$@" <<EOF && append host_cppflags "$@"
1140 int x;
1141 EOF
1142 }
1143
1144 check_host_cflags(){
1145 log check_host_cflags "$@"
1146 set -- $($host_cflags_filter "$@")
1147 check_host_cc "$@" <<EOF && append host_cflags "$@"
1148 int x;
1149 EOF
1150 }
1151
1152 check_host_cpp_condition(){
1153 log check_host_cpp_condition "$@"
1154 header=$1
1155 condition=$2
1156 shift 2
1157 check_host_cpp "$@" <<EOF
1158 #include <$header>
1159 #if !($condition)
1160 #error "unsatisfied condition: $condition"
1161 #endif
1162 EOF
1163 }
1164
1165 apply(){
1166 file=$1
1167 shift
1168 "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1169 }
1170
1171 cp_if_changed(){
1172 cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1173 mkdir -p "$(dirname $2)"
1174 $cp_f "$1" "$2"
1175 }
1176
1177 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1178 # system-dependent things.
1179
1180 AVCODEC_COMPONENTS="
1181 bsfs
1182 decoders
1183 encoders
1184 hwaccels
1185 parsers
1186 "
1187
1188 AVDEVICE_COMPONENTS="
1189 indevs
1190 outdevs
1191 "
1192 AVFILTER_COMPONENTS="
1193 filters
1194 "
1195 AVFORMAT_COMPONENTS="
1196 demuxers
1197 muxers
1198 protocols
1199 "
1200
1201 AVRESAMPLE_COMPONENTS=""
1202 AVUTIL_COMPONENTS=""
1203
1204 COMPONENT_LIST="
1205 $AVCODEC_COMPONENTS
1206 $AVDEVICE_COMPONENTS
1207 $AVFILTER_COMPONENTS
1208 $AVFORMAT_COMPONENTS
1209 $AVRESAMPLE_COMPONENTS
1210 $AVUTIL_COMPONENTS
1211 "
1212
1213 EXAMPLE_LIST="
1214 avcodec_example
1215 filter_audio_example
1216 metadata_example
1217 output_example
1218 qsvdec_example
1219 transcode_aac_example
1220 "
1221
1222 HWACCEL_LIBRARY_LIST="
1223 cuda
1224 d3d11va
1225 dxva2
1226 libmfx
1227 libnpp
1228 mmal
1229 nvenc
1230 omx
1231 vaapi
1232 vda
1233 vdpau
1234 "
1235
1236 EXTERNAL_LIBRARY_LIST="
1237 avisynth
1238 bzlib
1239 frei0r
1240 gnutls
1241 libbs2b
1242 libcdio
1243 libdc1394
1244 libdcadec
1245 libfaac
1246 libfdk_aac
1247 libfontconfig
1248 libfreetype
1249 libgsm
1250 libilbc
1251 libkvazaar
1252 libmp3lame
1253 libopencore_amrnb
1254 libopencore_amrwb
1255 libopencv
1256 libopenh264
1257 libopenjpeg
1258 libopus
1259 libpulse
1260 librtmp
1261 libschroedinger
1262 libsnappy
1263 libspeex
1264 libtheora
1265 libtwolame
1266 libvo_aacenc
1267 libvo_amrwbenc
1268 libvorbis
1269 libvpx
1270 libwavpack
1271 libwebp
1272 libx264
1273 libx265
1274 libxavs
1275 libxcb
1276 libxcb_shm
1277 libxcb_xfixes
1278 libxvid
1279 openssl
1280 x11grab
1281 zlib
1282 "
1283
1284 FEATURE_LIST="
1285 gray
1286 hardcoded_tables
1287 omx_rpi
1288 runtime_cpudetect
1289 safe_bitstream_reader
1290 shared
1291 small
1292 sram
1293 static
1294 swscale_alpha
1295 "
1296
1297 LIBRARY_LIST="
1298 avcodec
1299 avdevice
1300 avfilter
1301 avformat
1302 avresample
1303 avutil
1304 swscale
1305 "
1306
1307 LICENSE_LIST="
1308 gpl
1309 nonfree
1310 version3
1311 "
1312
1313 PROGRAM_LIST="
1314 avconv
1315 avplay
1316 avprobe
1317 "
1318
1319 SUBSYSTEM_LIST="
1320 dct
1321 doc
1322 error_resilience
1323 faan
1324 fft
1325 lsp
1326 lzo
1327 mdct
1328 network
1329 rdft
1330 "
1331
1332 CONFIG_LIST="
1333 $COMPONENT_LIST
1334 $EXAMPLE_LIST
1335 $EXTERNAL_LIBRARY_LIST
1336 $HWACCEL_LIBRARY_LIST
1337 $FEATURE_LIST
1338 $LICENSE_LIST
1339 $LIBRARY_LIST
1340 $PROGRAM_LIST
1341 $SUBSYSTEM_LIST
1342 memalign_hack
1343 neon_clobber_test
1344 pic
1345 pod2man
1346 texi2html
1347 thumb
1348 valgrind_backtrace
1349 xmm_clobber_test
1350 "
1351
1352 THREADS_LIST="
1353 pthreads
1354 w32threads
1355 "
1356
1357 ATOMICS_LIST="
1358 atomics_gcc
1359 atomics_suncc
1360 atomics_win32
1361 "
1362
1363 ARCH_LIST="
1364 aarch64
1365 alpha
1366 arm
1367 avr32
1368 avr32_ap
1369 avr32_uc
1370 bfin
1371 ia64
1372 m68k
1373 mips
1374 mips64
1375 parisc
1376 ppc
1377 ppc64
1378 s390
1379 sh4
1380 sparc
1381 sparc64
1382 tilegx
1383 tilepro
1384 tomi
1385 x86
1386 x86_32
1387 x86_64
1388 "
1389
1390 ARCH_EXT_LIST_ARM="
1391 armv5te
1392 armv6
1393 armv6t2
1394 armv8
1395 neon
1396 vfp
1397 vfpv3
1398 "
1399
1400 ARCH_EXT_LIST_X86_SIMD="
1401 amd3dnow
1402 amd3dnowext
1403 avx
1404 avx2
1405 fma3
1406 fma4
1407 mmx
1408 mmxext
1409 sse
1410 sse2
1411 sse3
1412 sse4
1413 sse42
1414 ssse3
1415 xop
1416 "
1417
1418 ARCH_EXT_LIST_PPC="
1419 altivec
1420 dcbzl
1421 ldbrx
1422 power8
1423 ppc4xx
1424 vsx
1425 "
1426
1427 ARCH_EXT_LIST_X86="
1428 $ARCH_EXT_LIST_X86_SIMD
1429 cpunop
1430 i686
1431 "
1432
1433 ARCH_EXT_LIST_MIPS="
1434 loongson
1435 mips32r1
1436 mips64r1
1437 mips32r2
1438 mips64r2
1439 mips32r6
1440 mips64r6
1441 "
1442
1443 ARCH_EXT_LIST="
1444 $ARCH_EXT_LIST_ARM
1445 $ARCH_EXT_LIST_MIPS
1446 $ARCH_EXT_LIST_PPC
1447 $ARCH_EXT_LIST_X86
1448 vis
1449 "
1450
1451 ARCH_FEATURES="
1452 aligned_stack
1453 fast_64bit
1454 fast_clz
1455 fast_cmov
1456 local_aligned_8
1457 local_aligned_16
1458 simd_align_16
1459 "
1460
1461 BUILTIN_LIST="
1462 atomic_cas_ptr
1463 machine_rw_barrier
1464 MemoryBarrier
1465 mm_empty
1466 rdtsc
1467 sem_timedwait
1468 sync_val_compare_and_swap
1469 "
1470 HAVE_LIST_CMDLINE="
1471 inline_asm
1472 symver
1473 yasm
1474 "
1475
1476 HAVE_LIST_PUB="
1477 bigendian
1478 fast_unaligned
1479 "
1480
1481 HEADERS_LIST="
1482 AVFoundation_AVFoundation_h
1483 alsa_asoundlib_h
1484 altivec_h
1485 arpa_inet_h
1486 cdio_paranoia_h
1487 cdio_paranoia_paranoia_h
1488 dispatch_dispatch_h
1489 dev_bktr_ioctl_bt848_h
1490 dev_bktr_ioctl_meteor_h
1491 dev_ic_bt8xx_h
1492 dev_video_bktr_ioctl_bt848_h
1493 dev_video_meteor_ioctl_meteor_h
1494 direct_h
1495 dlfcn_h
1496 d3d11_h
1497 dxva_h
1498 gsm_h
1499 io_h
1500 mach_mach_time_h
1501 machine_ioctl_bt848_h
1502 machine_ioctl_meteor_h
1503 malloc_h
1504 poll_h
1505 sndio_h
1506 soundcard_h
1507 sys_mman_h
1508 sys_param_h
1509 sys_resource_h
1510 sys_select_h
1511 sys_soundcard_h
1512 sys_time_h
1513 sys_un_h
1514 sys_videoio_h
1515 unistd_h
1516 valgrind_valgrind_h
1517 windows_h
1518 winsock2_h
1519 "
1520
1521 INTRINSICS_LIST="
1522 intrinsics_neon
1523 "
1524
1525 MATH_FUNCS="
1526 atanf
1527 atan2f
1528 cbrtf
1529 cosf
1530 exp2
1531 exp2f
1532 expf
1533 isinf
1534 isnan
1535 ldexpf
1536 llrint
1537 llrintf
1538 log2
1539 log2f
1540 log10f
1541 lrint
1542 lrintf
1543 powf
1544 rint
1545 round
1546 roundf
1547 sinf
1548 trunc
1549 truncf
1550 "
1551
1552 SYSTEM_FUNCS="
1553 aligned_malloc
1554 clock_gettime
1555 closesocket
1556 CommandLineToArgvW
1557 CoTaskMemFree
1558 CryptGenRandom
1559 dlopen
1560 fcntl
1561 flt_lim
1562 fork
1563 getaddrinfo
1564 gethrtime
1565 getopt
1566 GetProcessAffinityMask
1567 GetProcessMemoryInfo
1568 GetProcessTimes
1569 getrusage
1570 GetSystemTimeAsFileTime
1571 gettimeofday
1572 gmtime_r
1573 inet_aton
1574 isatty
1575 jack_port_get_latency_range
1576 LoadLibrary
1577 localtime_r
1578 mach_absolute_time
1579 MapViewOfFile
1580 memalign
1581 mkstemp
1582 mmap
1583 mprotect
1584 nanosleep
1585 posix_memalign
1586 sched_getaffinity
1587 SetConsoleTextAttribute
1588 setmode
1589 setrlimit
1590 Sleep
1591 strerror_r
1592 sysconf
1593 sysctl
1594 usleep
1595 VirtualAlloc
1596 "
1597
1598 TOOLCHAIN_FEATURES="
1599 as_dn_directive
1600 as_fpu_directive
1601 as_func
1602 as_object_arch
1603 asm_mod_q
1604 attribute_may_alias
1605 attribute_packed
1606 ebp_available
1607 ebx_available
1608 gnu_as
1609 ibm_asm
1610 inline_asm_labels
1611 pragma_deprecated
1612 symver_asm_label
1613 symver_gnu_asm
1614 vfp_args
1615 xform_asm
1616 xmm_clobbers
1617 "
1618
1619 TYPES_LIST="
1620 CONDITION_VARIABLE_Ptr
1621 socklen_t
1622 struct_addrinfo
1623 struct_group_source_req
1624 struct_ip_mreq_source
1625 struct_ipv6_mreq
1626 struct_pollfd
1627 struct_rusage_ru_maxrss
1628 struct_sockaddr_in6
1629 struct_sockaddr_sa_len
1630 struct_sockaddr_storage
1631 struct_v4l2_frmivalenum_discrete
1632 "
1633
1634 HAVE_LIST="
1635 $ARCH_EXT_LIST
1636 $(add_suffix _external $ARCH_EXT_LIST)
1637 $(add_suffix _inline $ARCH_EXT_LIST)
1638 $ARCH_FEATURES
1639 $ATOMICS_LIST
1640 $BUILTIN_LIST
1641 $HAVE_LIST_CMDLINE
1642 $HAVE_LIST_PUB
1643 $HEADERS_LIST
1644 $INTRINSICS_LIST
1645 $MATH_FUNCS
1646 $SYSTEM_FUNCS
1647 $THREADS_LIST
1648 $TOOLCHAIN_FEATURES
1649 $TYPES_LIST
1650 atomics_native
1651 dos_paths
1652 dxva2_lib
1653 libc_msvcrt
1654 libdc1394_1
1655 libdc1394_2
1656 MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1657 sdl
1658 section_data_rel_ro
1659 threads
1660 vaapi_drm
1661 vaapi_x11
1662 vdpau_x11
1663 xlib
1664 "
1665
1666 # options emitted with CONFIG_ prefix but not available on the command line
1667 CONFIG_EXTRA="
1668 aandcttables
1669 ac3dsp
1670 audio_frame_queue
1671 audiodsp
1672 blockdsp
1673 bswapdsp
1674 cabac
1675 dirac_parse
1676 dvprofile
1677 faandct
1678 faanidct
1679 fdctdsp
1680 flacdsp
1681 fmtconvert
1682 g722dsp
1683 gcrypt
1684 gmp
1685 golomb
1686 gplv3
1687 h263dsp
1688 h264chroma
1689 h264dsp
1690 h264parse
1691 h264pred
1692 h264qpel
1693 hpeldsp
1694 huffman
1695 huffyuvdsp
1696 huffyuvencdsp
1697 idctdsp
1698 iirfilter
1699 imdct15
1700 intrax8
1701 iso_media
1702 ividsp
1703 jpegtables
1704 libx262
1705 lgplv3
1706 lpc
1707 lzf
1708 me_cmp
1709 mpeg_er
1710 mpegaudio
1711 mpegaudiodsp
1712 mpegvideo
1713 mpegvideoenc
1714 mss34dsp
1715 pixblockdsp
1716 qpeldsp
1717 qsv
1718 qsvdec
1719 qsvenc
1720 rangecoder
1721 riffdec
1722 riffenc
1723 rtpdec
1724 rtpenc_chain
1725 rv34dsp
1726 sinewin
1727 snappy
1728 srtp
1729 startcode
1730 texturedsp
1731 texturedspenc
1732 tpeldsp
1733 vaapi_encode
1734 vc1dsp
1735 videodsp
1736 vp3dsp
1737 vp56dsp
1738 vp8dsp
1739 wma_freqs
1740 wmv2dsp
1741 "
1742
1743 CMDLINE_SELECT="
1744 $ARCH_EXT_LIST
1745 $CONFIG_LIST
1746 $HAVE_LIST_CMDLINE
1747 $THREADS_LIST
1748 asm
1749 cross_compile
1750 debug
1751 extra_warnings
1752 logging
1753 lto
1754 optimizations
1755 rpath
1756 "
1757
1758 PATHS_LIST="
1759 bindir
1760 datadir
1761 docdir
1762 incdir
1763 libdir
1764 mandir
1765 prefix
1766 shlibdir
1767 "
1768
1769 CMDLINE_SET="
1770 $PATHS_LIST
1771 ar
1772 arch
1773 as
1774 build_suffix
1775 cc
1776 objcc
1777 cpu
1778 cross_prefix
1779 custom_allocator
1780 dep_cc
1781 env
1782 extra_version
1783 host_cc
1784 host_cflags
1785 host_ld
1786 host_ldflags
1787 host_libs
1788 host_os
1789 ld
1790 logfile
1791 malloc_prefix
1792 nm
1793 optflags
1794 pkg_config
1795 pkg_config_flags
1796 random_seed
1797 samples
1798 sysinclude
1799 sysroot
1800 target_exec
1801 target_os
1802 target_path
1803 target_samples
1804 toolchain
1805 "
1806
1807 CMDLINE_APPEND="
1808 extra_cflags
1809 extra_objcflags
1810 host_cppflags
1811 "
1812
1813 # code dependency declarations
1814
1815 # architecture extensions
1816
1817 armv5te_deps="arm"
1818 armv6_deps="arm"
1819 armv6t2_deps="arm"
1820 armv8_deps="aarch64"
1821 neon_deps_any="aarch64 arm"
1822 intrinsics_neon_deps="neon"
1823 vfp_deps_any="aarch64 arm"
1824 vfpv3_deps="vfp"
1825
1826 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1827
1828 altivec_deps="ppc"
1829 ppc4xx_deps="ppc"
1830 vsx_deps="altivec"
1831 power8_deps="vsx"
1832
1833 cpunop_deps="i686"
1834 x86_64_select="i686"
1835 x86_64_suggest="fast_cmov"
1836
1837 amd3dnow_deps="mmx"
1838 amd3dnowext_deps="amd3dnow"
1839 i686_deps="x86"
1840 mmx_deps="x86"
1841 mmxext_deps="mmx"
1842 sse_deps="mmxext"
1843 sse2_deps="sse"
1844 sse3_deps="sse2"
1845 ssse3_deps="sse3"
1846 sse4_deps="ssse3"
1847 sse42_deps="sse4"
1848 avx_deps="sse42"
1849 xop_deps="avx"
1850 fma3_deps="avx"
1851 fma4_deps="avx"
1852 avx2_deps="avx"
1853
1854 mmx_external_deps="yasm"
1855 mmx_inline_deps="inline_asm"
1856 mmx_suggest="mmx_external mmx_inline"
1857
1858 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1859 eval dep=\$${ext}_deps
1860 eval ${ext}_external_deps='"${dep}_external"'
1861 eval ${ext}_inline_deps='"${dep}_inline"'
1862 eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1863 done
1864
1865 aligned_stack_if_any="aarch64 ppc x86"
1866 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1867 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1868 fast_unaligned_if_any="aarch64 ppc x86"
1869 simd_align_16_if_any="altivec neon sse"
1870
1871 # system capabilities
1872 symver_if_any="symver_asm_label symver_gnu_asm"
1873 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1874
1875 # threading support
1876 atomics_gcc_if="sync_val_compare_and_swap"
1877 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1878 atomics_win32_if="MemoryBarrier"
1879 atomics_native_if_any="$ATOMICS_LIST"
1880 w32threads_deps="atomics_native"
1881 threads_if_any="$THREADS_LIST"
1882
1883 # subsystems
1884 dct_select="rdft"
1885 dirac_parse_select="golomb"
1886 error_resilience_select="me_cmp"
1887 faandct_deps="faan fdctdsp"
1888 faanidct_deps="faan idctdsp"
1889 h264dsp_select="startcode"
1890 intrax8_select="blockdsp idctdsp"
1891 mdct_select="fft"
1892 rdft_select="fft"
1893 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1894 mpeg_er_select="error_resilience"
1895 mpegaudio_select="mpegaudiodsp"
1896 mpegaudiodsp_select="dct"
1897 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1898 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1899 vc1dsp_select="h264chroma qpeldsp startcode"
1900
1901 # decoders / encoders
1902 aac_decoder_select="imdct15 mdct sinewin"
1903 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1904 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1905 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1906 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1907 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1908 adpcm_g722_decoder_select="g722dsp"
1909 adpcm_g722_encoder_select="g722dsp"
1910 aic_decoder_select="golomb idctdsp"
1911 alac_encoder_select="lpc"
1912 als_decoder_select="bswapdsp"
1913 amrnb_decoder_select="lsp"
1914 amrwb_decoder_select="lsp"
1915 amv_decoder_select="sp5x_decoder"
1916 ape_decoder_select="bswapdsp"
1917 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1918 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1919 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1920 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1921 atrac1_decoder_select="mdct sinewin"
1922 atrac3_decoder_select="mdct"
1923 atrac3p_decoder_select="mdct sinewin"
1924 bink_decoder_select="blockdsp hpeldsp"
1925 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1926 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1927 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1928 cllc_decoder_select="bswapdsp"
1929 comfortnoise_encoder_select="lpc"
1930 cook_decoder_select="audiodsp mdct sinewin"
1931 cscd_decoder_select="lzo"
1932 cscd_decoder_suggest="zlib"
1933 dca_decoder_select="fmtconvert mdct"
1934 dds_decoder_select="texturedsp"
1935 dnxhd_decoder_select="blockdsp idctdsp"
1936 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1937 dvvideo_decoder_select="dvprofile idctdsp"
1938 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1939 dxa_decoder_deps="zlib"
1940 dxv_decoder_select="lzf texturedsp"
1941 eac3_decoder_select="ac3_decoder"
1942 eac3_encoder_select="ac3_encoder"
1943 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1944 eatgq_decoder_select="aandcttables idctdsp"
1945 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1946 exr_decoder_deps="zlib"
1947 ffv1_decoder_select="golomb rangecoder"
1948 ffv1_encoder_select="rangecoder"
1949 ffvhuff_decoder_select="huffyuv_decoder"
1950 ffvhuff_encoder_select="huffyuv_encoder"
1951 fic_decoder_select="golomb"
1952 flac_decoder_select="flacdsp golomb"
1953 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1954 flashsv_decoder_deps="zlib"
1955 flashsv_encoder_deps="zlib"
1956 flashsv2_decoder_deps="zlib"
1957 flv_decoder_select="h263_decoder"
1958 flv_encoder_select="h263_encoder"
1959 fourxm_decoder_select="blockdsp bswapdsp"
1960 fraps_decoder_select="bswapdsp huffman"
1961 g2m_decoder_deps="zlib"
1962 g2m_decoder_select="blockdsp idctdsp jpegtables"
1963 h261_decoder_select="mpeg_er mpegvideo"
1964 h261_encoder_select="aandcttables mpegvideoenc"
1965 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1966 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1967 h263i_decoder_select="h263_decoder"
1968 h263p_encoder_select="h263_encoder"
1969 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1970 h264_decoder_suggest="error_resilience"
1971 hap_decoder_select="snappy texturedsp"
1972 hap_encoder_deps="libsnappy"
1973 hap_encoder_select="texturedspenc"
1974 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1975 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1976 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1977 iac_decoder_select="imc_decoder"
1978 imc_decoder_select="bswapdsp fft mdct sinewin"
1979 indeo3_decoder_select="hpeldsp"
1980 indeo4_decoder_select="ividsp"
1981 indeo5_decoder_select="ividsp"
1982 interplay_video_decoder_select="hpeldsp"
1983 jpegls_decoder_select="golomb mjpeg_decoder"
1984 jpegls_encoder_select="golomb"
1985 jv_decoder_select="blockdsp"
1986 lagarith_decoder_select="huffyuvdsp"
1987 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1988 loco_decoder_select="golomb"
1989 magicyuv_decoder_select="huffyuvdsp"
1990 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1991 metasound_decoder_select="lsp mdct sinewin"
1992 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1993 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1994 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1995 mjpegb_decoder_select="mjpeg_decoder"
1996 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
1997 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
1998 mlp_decoder_select="mlp_parser"
1999 motionpixels_decoder_select="bswapdsp"
2000 mp1_decoder_select="mpegaudio"
2001 mp1float_decoder_select="mpegaudio"
2002 mp2_decoder_select="mpegaudio"
2003 mp2float_decoder_select="mpegaudio"
2004 mp3_decoder_select="mpegaudio"
2005 mp3adu_decoder_select="mpegaudio"
2006 mp3adufloat_decoder_select="mpegaudio"
2007 mp3float_decoder_select="mpegaudio"
2008 mp3on4_decoder_select="mpegaudio"
2009 mp3on4float_decoder_select="mpegaudio"
2010 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2011 mpc8_decoder_select="mpegaudiodsp"
2012 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2013 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2014 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2015 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2016 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2017 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2018 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2019 mpeg4_encoder_select="h263_encoder"
2020 msa1_decoder_select="mss34dsp"
2021 msmpeg4v1_decoder_select="h263_decoder"
2022 msmpeg4v2_decoder_select="h263_decoder"
2023 msmpeg4v2_encoder_select="h263_encoder"
2024 msmpeg4v3_decoder_select="h263_decoder"
2025 msmpeg4v3_encoder_select="h263_encoder"
2026 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2027 mts2_decoder_select="mss34dsp"
2028 mxpeg_decoder_select="mjpeg_decoder"
2029 nellymoser_decoder_select="mdct sinewin"
2030 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2031 nuv_decoder_select="idctdsp lzo"
2032 on2avc_decoder_select="mdct"
2033 opus_decoder_deps="avresample"
2034 opus_decoder_select="imdct15"
2035 png_decoder_deps="zlib"
2036 png_encoder_deps="zlib"
2037 png_encoder_select="huffyuvencdsp"
2038 prores_decoder_select="idctdsp"
2039 prores_encoder_select="fdctdsp"
2040 qcelp_decoder_select="lsp"
2041 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2042 ra_144_encoder_select="audio_frame_queue lpc"
2043 ralf_decoder_select="golomb"
2044 rscc_decoder_deps="zlib"
2045 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2046 rv10_encoder_select="h263_encoder"
2047 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2048 rv20_encoder_select="h263_encoder"
2049 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2050 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2051 screenpresso_decoder_deps="zlib"
2052 shorten_decoder_select="golomb"
2053 sipr_decoder_select="lsp"
2054 sp5x_decoder_select="mjpeg_decoder"
2055 svq1_decoder_select="hpeldsp"
2056 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2057 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2058 svq3_decoder_suggest="zlib"
2059 tak_decoder_select="audiodsp"
2060 tdsc_decoder_deps="zlib"
2061 tdsc_decoder_select="mjpeg_decoder"
2062 theora_decoder_select="vp3_decoder"
2063 thp_decoder_select="mjpeg_decoder"
2064 tiff_decoder_suggest="zlib"
2065 tiff_encoder_suggest="zlib"
2066 truehd_decoder_select="mlp_decoder"
2067 truemotion2_decoder_select="bswapdsp"
2068 truespeech_decoder_select="bswapdsp"
2069 tscc_decoder_deps="zlib"
2070 txd_decoder_select="texturedsp"
2071 twinvq_decoder_select="mdct lsp sinewin"
2072 utvideo_decoder_select="bswapdsp"
2073 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2074 vble_decoder_select="huffyuvdsp"
2075 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2076 vc1image_decoder_select="vc1_decoder"
2077 vorbis_decoder_select="mdct"
2078 vorbis_encoder_select="mdct"
2079 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2080 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2081 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2082 vp6a_decoder_select="vp6_decoder"
2083 vp6f_decoder_select="vp6_decoder"
2084 vp7_decoder_select="h264pred videodsp vp8dsp"
2085 vp8_decoder_select="h264pred videodsp vp8dsp"
2086 vp9_decoder_select="videodsp"
2087 webp_decoder_select="vp8_decoder"
2088 wmapro_decoder_select="mdct sinewin wma_freqs"
2089 wmav1_decoder_select="mdct sinewin wma_freqs"
2090 wmav1_encoder_select="mdct sinewin wma_freqs"
2091 wmav2_decoder_select="mdct sinewin wma_freqs"
2092 wmav2_encoder_select="mdct sinewin wma_freqs"
2093 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2094 wmv1_decoder_select="h263_decoder"
2095 wmv1_encoder_select="h263_encoder"
2096 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2097 wmv2_encoder_select="h263_encoder wmv2dsp"
2098 wmv3_decoder_select="vc1_decoder"
2099 wmv3image_decoder_select="wmv3_decoder"
2100 zerocodec_decoder_deps="zlib"
2101 zlib_decoder_deps="zlib"
2102 zlib_encoder_deps="zlib"
2103 zmbv_decoder_deps="zlib"
2104 zmbv_encoder_deps="zlib"
2105
2106 # hardware accelerators
2107 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2108 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2109 vaapi_deps="va_va_h"
2110 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2111 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2112 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2113
2114 h263_vaapi_hwaccel_deps="vaapi"
2115 h263_vaapi_hwaccel_select="h263_decoder"
2116 h264_d3d11va_hwaccel_deps="d3d11va"
2117 h264_d3d11va_hwaccel_select="h264_decoder"
2118 h264_dxva2_hwaccel_deps="dxva2"
2119 h264_dxva2_hwaccel_select="h264_decoder"
2120 h264_mmal_decoder_deps="mmal"
2121 h264_mmal_decoder_select="mmal"
2122 h264_mmal_hwaccel_deps="mmal"
2123 h264_omx_encoder_deps="omx"
2124 h264_qsv_hwaccel_deps="libmfx"
2125 h264_vaapi_hwaccel_deps="vaapi"
2126 h264_vaapi_hwaccel_select="h264_decoder"
2127 h264_vda_hwaccel_deps="vda"
2128 h264_vda_hwaccel_select="h264_decoder"
2129 h264_vda_old_hwaccel_deps="vda"
2130 h264_vda_old_hwaccel_select="h264_decoder"
2131 h264_vdpau_hwaccel_deps="vdpau"
2132 h264_vdpau_hwaccel_select="h264_decoder"
2133 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2134 hevc_d3d11va_hwaccel_select="hevc_decoder"
2135 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2136 hevc_dxva2_hwaccel_select="hevc_decoder"
2137 hevc_qsv_hwaccel_deps="libmfx"
2138 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2139 hevc_vdpau_hwaccel_select="hevc_decoder"
2140 mpeg1_vdpau_hwaccel_deps="vdpau"
2141 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2142 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2143 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2144 mpeg2_dxva2_hwaccel_deps="dxva2"
2145 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2146 mpeg2_mmal_decoder_deps="mmal"
2147 mpeg2_mmal_decoder_select="mmal"
2148 mpeg2_mmal_hwaccel_deps="mmal"
2149 mpeg2_qsv_hwaccel_deps="libmfx"
2150 mpeg2_vaapi_hwaccel_deps="vaapi"
2151 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2152 mpeg2_vdpau_hwaccel_deps="vdpau"
2153 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2154 mpeg4_omx_encoder_deps="omx"
2155 mpeg4_vaapi_hwaccel_deps="vaapi"
2156 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2157 mpeg4_vdpau_hwaccel_deps="vdpau"
2158 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2159 vc1_d3d11va_hwaccel_deps="d3d11va"
2160 vc1_d3d11va_hwaccel_select="vc1_decoder"
2161 vc1_dxva2_hwaccel_deps="dxva2"
2162 vc1_dxva2_hwaccel_select="vc1_decoder"
2163 vc1_mmal_decoder_deps="mmal"
2164 vc1_mmal_decoder_select="mmal"
2165 vc1_mmal_hwaccel_deps="mmal"
2166 vc1_vaapi_hwaccel_deps="vaapi"
2167 vc1_vaapi_hwaccel_select="vc1_decoder"
2168 vc1_vdpau_hwaccel_deps="vdpau"
2169 vc1_vdpau_hwaccel_select="vc1_decoder"
2170 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2171 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2172 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2173 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2174
2175 # hardware-accelerated codecs
2176 nvenc_deps_any="dlopen LoadLibrary"
2177 nvenc_extralibs='$ldl'
2178 omx_deps="dlopen pthreads"
2179 omx_extralibs='$ldl'
2180 qsvdec_select="qsv"
2181 qsvenc_select="qsv"
2182 vaapi_encode_deps="vaapi"
2183
2184 hwupload_cuda_filter_deps="cuda"
2185 scale_npp_filter_deps="cuda libnpp"
2186
2187 h264_nvenc_encoder_deps="nvenc"
2188 h264_qsv_decoder_deps="libmfx"
2189 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2190 h264_qsv_encoder_deps="libmfx"
2191 h264_qsv_encoder_select="qsvenc"
2192 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2193 h264_vaapi_encoder_select="vaapi_encode golomb"
2194
2195 hevc_nvenc_encoder_deps="nvenc"
2196 hevc_qsv_decoder_deps="libmfx"
2197 hevc_qsv_encoder_deps="libmfx"
2198 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2199 hevc_qsv_encoder_select="qsvenc"
2200 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2201 hevc_vaapi_encoder_select="vaapi_encode golomb"
2202 mpeg2_qsv_decoder_deps="libmfx"
2203 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2204 mpeg2_qsv_encoder_deps="libmfx"
2205 mpeg2_qsv_encoder_select="qsvenc"
2206
2207 nvenc_h264_encoder_deps="nvenc"
2208 nvenc_hevc_encoder_deps="nvenc"
2209
2210 # parsers
2211 h264_parser_select="golomb h264dsp h264parse"
2212 hevc_parser_select="golomb"
2213 mpegvideo_parser_select="mpegvideo"
2214 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2215 vc1_parser_select="vc1dsp"
2216
2217 # bitstream_filters
2218 mjpeg2jpeg_bsf_select="jpegtables"
2219
2220 # external libraries
2221 libdcadec_decoder_deps="libdcadec"
2222 libfaac_encoder_deps="libfaac"
2223 libfaac_encoder_select="audio_frame_queue"
2224 libfdk_aac_decoder_deps="libfdk_aac"
2225 libfdk_aac_encoder_deps="libfdk_aac"
2226 libfdk_aac_encoder_select="audio_frame_queue"
2227 libgsm_decoder_deps="libgsm"
2228 libgsm_encoder_deps="libgsm"
2229 libgsm_ms_decoder_deps="libgsm"
2230 libgsm_ms_encoder_deps="libgsm"
2231 libilbc_decoder_deps="libilbc"
2232 libilbc_encoder_deps="libilbc"
2233 libkvazaar_encoder_deps="libkvazaar"
2234 libmp3lame_encoder_deps="libmp3lame"
2235 libmp3lame_encoder_select="audio_frame_queue"
2236 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2237 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2238 libopencore_amrnb_encoder_select="audio_frame_queue"
2239 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2240 libopenh264_decoder_deps="libopenh264"
2241 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2242 libopenh264_encoder_deps="libopenh264"
2243 libopenjpeg_decoder_deps="libopenjpeg"
2244 libopenjpeg_encoder_deps="libopenjpeg"
2245 libopus_decoder_deps="libopus"
2246 libopus_encoder_deps="libopus"
2247 libopus_encoder_select="audio_frame_queue"
2248 libschroedinger_decoder_deps="libschroedinger"
2249 libschroedinger_encoder_deps="libschroedinger"
2250 libspeex_decoder_deps="libspeex"
2251 libspeex_encoder_deps="libspeex"
2252 libspeex_encoder_select="audio_frame_queue"
2253 libtheora_encoder_deps="libtheora"
2254 libtwolame_encoder_deps="libtwolame"
2255 libvo_aacenc_encoder_deps="libvo_aacenc"
2256 libvo_aacenc_encoder_select="audio_frame_queue"
2257 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2258 libvorbis_encoder_deps="libvorbis"
2259 libvorbis_encoder_select="audio_frame_queue"
2260 libvpx_vp8_decoder_deps="libvpx"
2261 libvpx_vp8_encoder_deps="libvpx"
2262 libvpx_vp9_decoder_deps="libvpx"
2263 libvpx_vp9_encoder_deps="libvpx"
2264 libwavpack_encoder_deps="libwavpack"
2265 libwebp_encoder_deps="libwebp"
2266 libx262_encoder_deps="libx262"
2267 libx264_encoder_deps="libx264"
2268 libx265_encoder_deps="libx265"
2269 libxavs_encoder_deps="libxavs"
2270 libxvid_encoder_deps="libxvid"
2271
2272 # demuxers / muxers
2273 ac3_demuxer_select="ac3_parser"
2274 asf_demuxer_select="riffdec"
2275 asf_muxer_select="riffenc"
2276 asf_stream_muxer_select="asf_muxer"
2277 avi_demuxer_select="iso_media riffdec"
2278 avi_muxer_select="riffenc"
2279 avisynth_demuxer_deps="avisynth"
2280 avisynth_demuxer_select="riffdec"
2281 caf_demuxer_select="iso_media riffdec"
2282 dash_muxer_select="mp4_muxer"
2283 dirac_demuxer_select="dirac_parser"
2284 dv_demuxer_select="dvprofile"
2285 dv_muxer_select="dvprofile"
2286 dxa_demuxer_select="riffdec"
2287 eac3_demuxer_select="ac3_parser"
2288 f4v_muxer_select="mov_muxer"
2289 flac_demuxer_select="flac_parser"
2290 hds_muxer_select="flv_muxer"
2291 hls_muxer_select="mpegts_muxer"
2292 ipod_muxer_select="mov_muxer"
2293 ismv_muxer_select="mov_muxer"
2294 matroska_audio_muxer_select="matroska_muxer"
2295 matroska_demuxer_select="iso_media riffdec"
2296 matroska_demuxer_suggest="bzlib lzo zlib"
2297 matroska_muxer_select="iso_media riffenc"
2298 mmf_muxer_select="riffenc"
2299 mov_demuxer_select="iso_media riffdec"
2300 mov_demuxer_suggest="zlib"
2301 mov_muxer_select="iso_media riffenc rtpenc_chain"
2302 mp3_demuxer_select="mpegaudio_parser"
2303 mp4_muxer_select="mov_muxer"
2304 mpegts_demuxer_select="iso_media"
2305 mpegts_muxer_select="adts_muxer latm_muxer"
2306 mpegtsraw_demuxer_select="mpegts_demuxer"
2307 mxf_d10_muxer_select="mxf_muxer"
2308 nut_muxer_select="riffenc"
2309 nuv_demuxer_select="riffdec"
2310 oga_muxer_select="ogg_muxer"
2311 ogg_demuxer_select="dirac_parse"
2312 opus_muxer_select="ogg_muxer"
2313 psp_muxer_select="mov_muxer"
2314 rtp_demuxer_select="sdp_demuxer"
2315 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2316 rtsp_demuxer_select="http_protocol rtpdec"
2317 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2318 sap_demuxer_select="sdp_demuxer"
2319 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2320 sdp_demuxer_select="rtpdec"
2321 smoothstreaming_muxer_select="ismv_muxer"
2322 spdif_muxer_select="aac_parser"
2323 spx_muxer_select="ogg_muxer"
2324 swf_demuxer_suggest="zlib"
2325 tak_demuxer_select="tak_parser"
2326 tg2_muxer_select="mov_muxer"
2327 tgp_muxer_select="mov_muxer"
2328 w64_demuxer_select="wav_demuxer"
2329 wav_demuxer_select="riffdec"
2330 wav_muxer_select="riffenc"
2331 webm_muxer_select="iso_media riffenc"
2332 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2333 wtv_demuxer_select="mpegts_demuxer riffdec"
2334 xmv_demuxer_select="riffdec"
2335 xwma_demuxer_select="riffdec"
2336
2337 # indevs / outdevs
2338 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2339 alsa_outdev_deps="alsa_asoundlib_h"
2340 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2341 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2342 dv1394_indev_deps="dv1394"
2343 dv1394_indev_select="dv_demuxer"
2344 fbdev_indev_deps="linux_fb_h"
2345 jack_indev_deps="jack_jack_h"
2346 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2347 libcdio_indev_deps="libcdio"
2348 libdc1394_indev_deps="libdc1394"
2349 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2350 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2351 pulse_indev_deps="libpulse"
2352 sndio_indev_deps="sndio_h"
2353 sndio_outdev_deps="sndio_h"
2354 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2355 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2356 vfwcap_indev_extralibs="-lavicap32"
2357 x11grab_indev_deps="x11grab"
2358 x11grab_xcb_indev_deps="libxcb"
2359
2360 # protocols
2361 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2362 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2363 ffrtmpcrypt_protocol_select="tcp_protocol"
2364 ffrtmphttp_protocol_deps="!librtmp_protocol"
2365 ffrtmphttp_protocol_select="http_protocol"
2366 gopher_protocol_select="network"
2367 http_protocol_select="tcp_protocol"
2368 httpproxy_protocol_select="tcp_protocol"
2369 https_protocol_select="tls_protocol"
2370 icecast_protocol_select="http_protocol"
2371 librtmp_protocol_deps="librtmp"
2372 librtmpe_protocol_deps="librtmp"
2373 librtmps_protocol_deps="librtmp"
2374 librtmpt_protocol_deps="librtmp"
2375 librtmpte_protocol_deps="librtmp"
2376 mmsh_protocol_select="http_protocol"
2377 mmst_protocol_select="network"
2378 rtmp_protocol_deps="!librtmp_protocol"
2379 rtmp_protocol_select="tcp_protocol"
2380 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2381 rtmps_protocol_deps="!librtmp_protocol"
2382 rtmps_protocol_select="tls_protocol"
2383 rtmpt_protocol_select="ffrtmphttp_protocol"
2384 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2385 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2386 rtp_protocol_select="udp_protocol"
2387 sctp_protocol_deps="struct_sctp_event_subscribe"
2388 sctp_protocol_select="network"
2389 srtp_protocol_select="rtp_protocol srtp"
2390 tcp_protocol_select="network"
2391 tls_gnutls_protocol_deps="gnutls"
2392 tls_gnutls_protocol_select="tcp_protocol"
2393 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2394 tls_openssl_protocol_select="tcp_protocol"
2395 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2396 udp_protocol_select="network"
2397 unix_protocol_deps="sys_un_h"
2398 unix_protocol_select="network"
2399
2400 # filters
2401 blackframe_filter_deps="gpl"
2402 boxblur_filter_deps="gpl"
2403 bs2b_filter_deps="libbs2b"
2404 cropdetect_filter_deps="gpl"
2405 deinterlace_qsv_filter_deps="libmfx"
2406 delogo_filter_deps="gpl"
2407 drawtext_filter_deps="libfreetype"
2408 frei0r_filter_deps="frei0r dlopen"
2409 frei0r_filter_extralibs='$ldl'
2410 frei0r_src_filter_deps="frei0r dlopen"
2411 frei0r_src_filter_extralibs='$ldl'
2412 hqdn3d_filter_deps="gpl"
2413 interlace_filter_deps="gpl"
2414 ocv_filter_deps="libopencv"
2415 resample_filter_deps="avresample"
2416 scale_filter_deps="swscale"
2417 scale_qsv_filter_deps="libmfx"
2418 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2419
2420 # examples
2421 avcodec_example_deps="avcodec avutil"
2422 filter_audio_example_deps="avfilter avutil"
2423 metadata_example_deps="avformat avutil"
2424 output_example_deps="avcodec avformat avutil swscale"
2425 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2426 transcode_aac_example_deps="avcodec avformat avresample"
2427
2428 # libraries, in linking order
2429 avcodec_deps="avutil"
2430 avdevice_deps="avformat avcodec avutil"
2431 avfilter_deps="avutil"
2432 avformat_deps="avcodec avutil"
2433 avresample_deps="avutil"
2434 swscale_deps="avutil"
2435
2436 # programs
2437 avconv_deps="avcodec avfilter avformat avresample swscale"
2438 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2439 fps_filter null_filter resample_filter scale_filter
2440 trim_filter"
2441 avplay_deps="avcodec avfilter avformat avresample sdl"
2442 avplay_libs='$sdl_libs'
2443 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2444 avprobe_deps="avcodec avformat"
2445
2446 # documentation
2447 pod2man_deps="doc"
2448 texi2html_deps="doc"
2449
2450 # default parameters
2451
2452 logfile="config.log"
2453
2454 # installation paths
2455 prefix_default="/usr/local"
2456 bindir_default='${prefix}/bin'
2457 datadir_default='${prefix}/share/avconv'
2458 docdir_default='${prefix}/share/doc/libav'
2459 incdir_default='${prefix}/include'
2460 libdir_default='${prefix}/lib'
2461 mandir_default='${prefix}/share/man'
2462 shlibdir_default="$libdir_default"
2463
2464 # toolchain
2465 ar_default="ar"
2466 cc_default="gcc"
2467 host_cc_default="gcc"
2468 cp_f="cp -f"
2469 ln_s="ln -s -f"
2470 nm_default="nm -g"
2471 objformat="elf"
2472 pkg_config_default=pkg-config
2473 ranlib="ranlib"
2474 strip="strip"
2475 version_script='--version-script'
2476 yasmexe="yasm"
2477
2478 # machine
2479 arch_default=$(uname -m)
2480 cpu="generic"
2481 intrinsics="none"
2482
2483 # OS
2484 target_os_default=$(tolower $(uname -s))
2485 host_os=$target_os_default
2486
2487 # configurable options
2488 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2489
2490 enable asm
2491 enable debug
2492 enable doc
2493 enable faan faandct faanidct
2494 enable optimizations
2495 enable safe_bitstream_reader
2496 enable static
2497 enable swscale_alpha
2498 enable valgrind_backtrace
2499
2500 # By default, enable only those hwaccels that have no external dependencies.
2501 enable d3d11va dxva2 vda vdpau
2502
2503 # build settings
2504 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2505 LIBPREF="lib"
2506 LIBSUF=".a"
2507 FULLNAME='$(NAME)$(BUILDSUF)'
2508 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2509 SLIBPREF="lib"
2510 SLIBSUF=".so"
2511 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2512 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2513 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2514 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2515 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2516 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2517 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2518
2519 asflags_filter=echo
2520 cflags_filter=echo
2521 ldflags_filter=echo
2522
2523 AS_C='-c'
2524 AS_O='-o $@'
2525 CC_C='-c'
2526 CC_E='-E -o $@'
2527 CC_O='-o $@'
2528 OBJCC_C='-c'
2529 OBJCC_E='-E -o $@'
2530 OBJCC_O='-o $@'
2531 LD_O='-o $@'
2532 LD_LIB='-l%'
2533 LD_PATH='-L'
2534 HOSTCC_C='-c'
2535 HOSTCC_E='-E -o $@'
2536 HOSTCC_O='-o $@'
2537 HOSTLD_O='-o $@'
2538
2539 host_libs='-lm'
2540 host_cflags_filter=echo
2541 host_ldflags_filter=echo
2542
2543 target_path='$(CURDIR)'
2544
2545 # since the object filename is not given with the -MM flag, the compiler
2546 # is only able to print the basename, and we must add the path ourselves
2547 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2548 DEPFLAGS='-MM'
2549
2550 # find source path
2551 if test -f configure; then
2552 source_path=.
2553 else
2554 source_path=$(cd $(dirname "$0"); pwd)
2555 echo "$source_path" | grep -q '[[:blank:]]' &&
2556 die "Out of tree builds are impossible with whitespace in source path."
2557 test -e "$source_path/config.h" &&
2558 die "Out of tree builds are impossible with config.h in source dir."
2559 fi
2560
2561 for v in "$@"; do
2562 r=${v#*=}
2563 l=${v%"$r"}
2564 r=$(sh_quote "$r")
2565 LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2566 done
2567
2568 find_things(){
2569 thing=$1
2570 pattern=$2
2571 file=$source_path/$3
2572 sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2573 }
2574
2575 ENCODER_LIST=$(find_things encoder ENC libavcodec/allcodecs.c)
2576 DECODER_LIST=$(find_things decoder DEC libavcodec/allcodecs.c)
2577 HWACCEL_LIST=$(find_things hwaccel HWACCEL libavcodec/allcodecs.c)
2578 PARSER_LIST=$(find_things parser PARSER libavcodec/allcodecs.c)
2579 MUXER_LIST=$(find_things muxer _MUX libavformat/allformats.c)
2580 DEMUXER_LIST=$(find_things demuxer DEMUX libavformat/allformats.c)
2581 OUTDEV_LIST=$(find_things outdev OUTDEV libavdevice/alldevices.c)
2582 INDEV_LIST=$(find_things indev _IN libavdevice/alldevices.c)
2583 FILTER_LIST=$(find_things filter FILTER libavfilter/allfilters.c)
2584
2585 find_things_extern(){
2586 thing=$1
2587 pattern=$2
2588 file=$source_path/$3
2589 sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2590 }
2591
2592 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2593 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2594
2595 ALL_COMPONENTS="
2596 $BSF_LIST
2597 $DECODER_LIST
2598 $DEMUXER_LIST
2599 $ENCODER_LIST
2600 $FILTER_LIST
2601 $HWACCEL_LIST
2602 $INDEV_LIST
2603 $MUXER_LIST
2604 $OUTDEV_LIST
2605 $PARSER_LIST
2606 $PROTOCOL_LIST
2607 "
2608
2609 for n in $COMPONENT_LIST; do
2610 v=$(toupper ${n%s})_LIST
2611 eval enable \$$v
2612 eval ${n}_if_any="\$$v"
2613 done
2614
2615 enable $ARCH_EXT_LIST
2616
2617 die_unknown(){
2618 echo "Unknown option \"$1\"."
2619 echo "See $0 --help for available options."
2620 exit 1
2621 }
2622
2623 print_3_columns() {
2624 printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2625 }
2626
2627 show_list() {
2628 suffix=_$1
2629 shift
2630 echo $* | sed s/$suffix//g | print_3_columns
2631 exit 0
2632 }
2633
2634 rand_list(){
2635 IFS=', '
2636 set -- $*
2637 unset IFS
2638 for thing; do
2639 comp=${thing%:*}
2640 prob=${thing#$comp}
2641 prob=${prob#:}
2642 is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2643 echo "prob ${prob:-0.5}"
2644 printf '%s\n' $comp
2645 done
2646 }
2647
2648 do_random(){
2649 action=$1
2650 shift
2651 random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2652 $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2653 }
2654
2655 for opt do
2656 optval="${opt#*=}"
2657 case "$opt" in
2658 --extra-ldflags=*)
2659 add_ldflags $optval
2660 ;;
2661 --extra-ldexeflags=*)
2662 add_ldexeflags $optval
2663 ;;
2664 --extra-libs=*)
2665 add_extralibs $optval
2666 ;;
2667 --disable-devices)
2668 disable $INDEV_LIST $OUTDEV_LIST
2669 ;;
2670 --enable-debug=*)
2671 debuglevel="$optval"
2672 ;;
2673 --disable-programs)
2674 disable $PROGRAM_LIST
2675 ;;
2676 --disable-everything)
2677 map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2678 ;;
2679 --disable-all)
2680 map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2681 disable $LIBRARY_LIST $PROGRAM_LIST doc
2682 ;;
2683 --enable-random|--disable-random)
2684 action=${opt%%-random}
2685 do_random ${action#--} $COMPONENT_LIST
2686 ;;
2687 --enable-random=*|--disable-random=*)
2688 action=${opt%%-random=*}
2689 do_random ${action#--} $optval
2690 ;;
2691 --enable-*=*|--disable-*=*)
2692 eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2693 is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2694 eval list=\$$(toupper $thing)_LIST
2695 name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2696 $action $(filter "$name" $list)
2697 ;;
2698 --enable-avserver|--disable-avserver*)
2699 warn "avserver has been removed, the ${opt} option is only"\
2700 "provided for compatibility and will be removed in the future"
2701 ;;
2702 --enable-?*|--disable-?*)
2703 eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2704 if is_in $option $COMPONENT_LIST; then
2705 test $action = disable && action=unset
2706 eval $action \$$(toupper ${option%s})_LIST
2707 elif is_in $option $CMDLINE_SELECT; then
2708 $action $option
2709 else
2710 die_unknown $opt
2711 fi
2712 ;;
2713 --list-*)
2714 NAME="${opt#--list-}"
2715 is_in $NAME $COMPONENT_LIST || die_unknown $opt
2716 NAME=${NAME%s}
2717 eval show_list $NAME \$$(toupper $NAME)_LIST
2718 ;;
2719 --help|-h) show_help
2720 ;;
2721 *)
2722 optname="${opt%%=*}"
2723 optname="${optname#--}"
2724 optname=$(echo "$optname" | sed 's/-/_/g')
2725 if is_in $optname $CMDLINE_SET; then
2726 eval $optname='$optval'
2727 elif is_in $optname $CMDLINE_APPEND; then
2728 append $optname "$optval"
2729 else
2730 die_unknown $opt
2731 fi
2732 ;;
2733 esac
2734 done
2735
2736 for e in $env; do
2737 eval "export $e"
2738 done
2739
2740 disabled logging && logfile=/dev/null
2741
2742 # Disable all the library-specific components if the library itself
2743 # is disabled, see AVCODEC_LIST and following _LIST variables.
2744
2745 disable_components(){
2746 disabled ${1} && disable $(
2747 eval components="\$$(toupper ${1})_COMPONENTS"
2748 map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2749 )
2750 }
2751
2752 map 'disable_components $v' $LIBRARY_LIST
2753
2754 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2755 set >> $logfile
2756
2757 case "$toolchain" in
2758 *-asan)
2759 cc_default="${toolchain%-asan}"
2760 add_cflags -fsanitize=address
2761 add_ldflags -fsanitize=address
2762 ;;
2763 *-msan)
2764 cc_default="${toolchain%-msan}"
2765 add_cflags -fsanitize=memory -fsanitize-memory-track-origins
2766 add_ldflags -fsanitize=memory
2767 ;;
2768 *-tsan)
2769 cc_default="${toolchain%-tsan}"
2770 add_cflags -fsanitize=thread -pie
2771 add_ldflags -fsanitize=thread -pie
2772 case "$toolchain" in
2773 gcc-tsan)
2774 add_cflags -fPIC
2775 add_ldflags -fPIC
2776 ;;
2777 esac
2778 ;;
2779 *-usan)
2780 cc_default="${toolchain%-usan}"
2781 add_cflags -fsanitize=undefined
2782 add_ldflags -fsanitize=undefined
2783 case "$toolchain" in
2784 clang-usan)
2785 add_cflags -O1
2786 ;;
2787 esac
2788 ;;
2789 valgrind-*)
2790 target_exec_default="valgrind"
2791 case "$toolchain" in
2792 valgrind-massif)
2793 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2794 ;;
2795 valgrind-memcheck)
2796 target_exec_args="--track-origins=yes --leak-check=full"
2797 ;;
2798 esac
2799 ;;
2800 msvc)
2801 # Check whether the current MSVC version needs the C99 converter.
2802 # From MSVC 2013 (compiler major version 18) onwards, it does actually
2803 # support enough of C99 to build libav. Default to the new
2804 # behaviour if the regexp was unable to match anything, since this
2805 # successfully parses the version number of existing supported
2806 # versions that require the converter (MSVC 2010 and 2012).
2807 cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2808 if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2809 cc_default="cl"
2810 else
2811 cc_default="c99wrap cl"
2812 fi
2813 ld_default="$source_path/compat/windows/mslink"
2814 nm_default="dumpbin -symbols"
2815 ar_default="lib"
2816 case "$arch" in
2817 arm*)
2818 as_default="armasm"
2819 ;;
2820 esac
2821 target_os_default="win32"
2822 # Use a relative path for TMPDIR. This makes sure all the
2823 # ffconf temp files are written with a relative path, avoiding
2824 # issues with msys/win32 path conversion for MSVC parameters
2825 # such as -Fo<file> or -out:<file>.
2826 TMPDIR=.
2827 ;;
2828 icl)
2829 cc_default="icl"
2830 ld_default="xilink"
2831 nm_default="dumpbin -symbols"
2832 ar_default="xilib"
2833 target_os_default="win32"
2834 TMPDIR=.
2835 ;;
2836 gcov)
2837 add_cflags -fprofile-arcs -ftest-coverage
2838 add_ldflags -fprofile-arcs -ftest-coverage
2839 ;;
2840 llvm-cov)
2841 add_cflags -fprofile-arcs -ftest-coverage
2842 add_ldflags --coverage
2843 ;;
2844 hardened)
2845 add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2846 add_cflags -fno-strict-overflow -fstack-protector-all
2847 add_ldflags -Wl,-z,relro -Wl,-z,now
2848 ;;
2849 ?*)
2850 die "Unknown toolchain $toolchain"
2851 ;;
2852 esac
2853
2854 test -n "$cross_prefix" && enable cross_compile
2855
2856 if enabled cross_compile; then
2857 test -n "$arch" && test -n "$target_os" ||
2858 die "Must specify target arch and OS when cross-compiling"
2859 fi
2860
2861 ar_default="${cross_prefix}${ar_default}"
2862 cc_default="${cross_prefix}${cc_default}"
2863 occ_default="${cross_prefix}${occ_default}"
2864 nm_default="${cross_prefix}${nm_default}"
2865 pkg_config_default="${cross_prefix}${pkg_config_default}"
2866 ranlib="${cross_prefix}${ranlib}"
2867 strip="${cross_prefix}${strip}"
2868
2869 sysinclude_default="${sysroot}/usr/include"
2870
2871 set_default arch cc pkg_config sysinclude target_exec target_os
2872 enabled cross_compile || host_cc_default=$cc
2873 set_default host_cc
2874
2875 if ! $pkg_config --version >/dev/null 2>&1; then
2876 warn "$pkg_config not found, library detection may fail."
2877 pkg_config=false
2878 fi
2879
2880 exesuf() {
2881 case $1 in
2882 mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2883 esac
2884 }
2885
2886 EXESUF=$(exesuf $target_os)
2887 HOSTEXESUF=$(exesuf $host_os)
2888
2889 # set temporary file name
2890 : ${TMPDIR:=$TEMPDIR}
2891 : ${TMPDIR:=$TMP}
2892 : ${TMPDIR:=/tmp}
2893
2894 if ! check_cmd mktemp -u XXXXXX; then
2895 # simple replacement for missing mktemp
2896 # NOT SAFE FOR GENERAL USE
2897 mktemp(){
2898 echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2899 }
2900 fi
2901
2902 tmpfile(){
2903 tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2904 (set -C; exec > $tmp) 2>/dev/null ||
2905 die "Unable to create temporary file in $TMPDIR."
2906 append TMPFILES $tmp
2907 eval $1=$tmp
2908 }
2909
2910 trap 'rm -f -- $TMPFILES' EXIT
2911
2912 tmpfile TMPASM .asm
2913 tmpfile TMPC .c
2914 tmpfile TMPE $EXESUF
2915 tmpfile TMPH .h
2916 tmpfile TMPO .o
2917 tmpfile TMPS .S
2918 tmpfile TMPSH .sh
2919 tmpfile TMPV .ver
2920
2921 unset -f mktemp
2922
2923 chmod +x $TMPE
2924
2925 # make sure we can execute files in $TMPDIR
2926 cat > $TMPSH 2>> $logfile <<EOF
2927 #! /bin/sh
2928 EOF
2929 chmod +x $TMPSH >> $logfile 2>&1
2930 if ! $TMPSH >> $logfile 2>&1; then
2931 cat <<EOF
2932 Unable to create and execute files in $TMPDIR. Set the TMPDIR environment
2933 variable to another directory and make sure that it is not mounted noexec.
2934 EOF
2935 die "Sanity test failed."
2936 fi
2937
2938 armasm_flags(){
2939 for flag; do
2940 case $flag in
2941 # Filter out MSVC cl.exe options from cflags that shouldn't
2942 # be passed to gas-preprocessor
2943 -M[TD]*) ;;
2944 *) echo $flag ;;
2945 esac
2946 done
2947 }
2948
2949 ccc_flags(){
2950 for flag; do
2951 case $flag in
2952 -std=c99) echo -c99 ;;
2953 -mcpu=*) echo -arch ${flag#*=} ;;
2954 -mieee) echo -ieee ;;
2955 -O*|-fast) echo $flag ;;
2956 -fno-math-errno) echo -assume nomath_errno ;;
2957 -g) echo -g3 ;;
2958 -Wall) echo -msg_enable level2 ;;
2959 -Wno-pointer-sign) echo -msg_disable ptrmismatch1 ;;
2960 -Wl,*) echo $flag ;;
2961 -f*|-W*) ;;
2962 *) echo $flag ;;
2963 esac
2964 done
2965 }
2966
2967 cparser_flags(){
2968 for flag; do
2969 case $flag in
2970 -Wno-switch) echo -Wno-switch-enum ;;
2971 -Wno-format-zero-length) ;;
2972 -Wdisabled-optimization) ;;
2973 -Wno-pointer-sign) echo -Wno-other ;;
2974 *) echo $flag ;;
2975 esac
2976 done
2977 }
2978
2979 msvc_common_flags(){
2980 for flag; do
2981 case $flag in
2982 # In addition to specifying certain flags under the compiler
2983 # specific filters, they must be specified here as well or else the
2984 # generic catch all at the bottom will print the original flag.
2985 -Wall) ;;
2986 -std=c99) ;;
2987 # Common flags
2988 -fomit-frame-pointer) ;;
2989 -g) echo -Z7 ;;
2990 -fno-math-errno) ;;
2991 -fno-common) ;;
2992 -fno-signed-zeros) ;;
2993 -fPIC) ;;
2994 -mthumb) ;;
2995 -march=*) ;;
2996 -lz) echo zlib.lib ;;
2997 -lavifil32) echo vfw32.lib ;;
2998 -lavicap32) echo vfw32.lib user32.lib ;;
2999 -lx264) echo libx264.lib ;;
3000 -l*) echo ${flag#-l}.lib ;;
3001 -L*) echo -libpath:${flag#-L} ;;
3002 *) echo $flag ;;
3003 esac
3004 done
3005 }
3006
3007 msvc_flags(){
3008 msvc_common_flags "$@"
3009 for flag; do
3010 case $flag in
3011 -Wall) echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
3012 -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3013 -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3014 -wd4273 -wd4554 -wd4701 ;;
3015 esac
3016 done
3017 }
3018
3019 icl_flags(){
3020 msvc_common_flags "$@"
3021 for flag; do
3022 case $flag in
3023 # Despite what Intel's documentation says -Wall, which is supported
3024 # on Windows, does enable remarks so disable them here.
3025 -Wall) echo $flag -Qdiag-disable:remark ;;
3026 -std=c99) echo -Qstd=c99 ;;
3027 esac
3028 done
3029 }
3030
3031 pgi_flags(){
3032 for flag; do
3033 case $flag in
3034 -flto) echo -Mipa=fast,libopt,libinline,vestigial ;;
3035 -fomit-frame-pointer) echo -Mnoframe ;;
3036 -g) echo -gopt ;;
3037 *) echo $flag ;;
3038 esac
3039 done
3040 }
3041
3042 suncc_flags(){
3043 for flag; do
3044 case $flag in
3045 -march=*|-mcpu=*)
3046 case "${flag#*=}" in
3047 native) echo -xtarget=native ;;
3048 v9|niagara) echo -xarch=sparc ;;
3049 ultrasparc) echo -xarch=sparcvis ;;
3050 ultrasparc3|niagara2) echo -xarch=sparcvis2 ;;
3051 i586|pentium) echo -xchip=pentium ;;
3052 i686|pentiumpro|pentium2) echo -xtarget=pentium_pro ;;
3053 pentium3*|c3-2) echo -xtarget=pentium3 ;;
3054 pentium-m) echo -xarch=sse2 -xchip=pentium3 ;;
3055 pentium4*) echo -xtarget=pentium4 ;;
3056 prescott|nocona) echo -xarch=sse3 -xchip=pentium4 ;;
3057 *-sse3) echo -xarch=sse3 ;;
3058 core2) echo -xarch=ssse3 -xchip=core2 ;;
3059 corei7) echo -xarch=sse4_2 -xchip=nehalem ;;
3060 corei7-avx) echo -xarch=avx -xchip=sandybridge ;;
3061 amdfam10|barcelona|bdver*) echo -xarch=sse4_1 ;;
3062 athlon-4|athlon-[mx]p) echo -xarch=ssea ;;
3063 k8|opteron|athlon64|athlon-fx)
3064 echo -xarch=sse2a ;;
3065 athlon*) echo -xarch=pentium_proa ;;
3066 esac
3067 ;;
3068 -std=c99) echo -xc99 ;;
3069 -fomit-frame-pointer) echo -xregs=frameptr ;;
3070 -fPIC) echo -KPIC -xcode=pic32 ;;
3071 -W*,*) echo $flag ;;
3072 -f*-*|-W*|-mimpure-text) ;;
3073 -shared) echo -G ;;
3074 *) echo $flag ;;
3075 esac
3076 done
3077 }
3078
3079 tms470_flags(){
3080 for flag; do
3081 case $flag in
3082 -march=*|-mcpu=*)
3083 case "${flag#*=}" in
3084 armv7-a|cortex-a*) echo -mv=7a8 ;;
3085 armv7-r|cortex-r*) echo -mv=7r4 ;;
3086 armv7-m|cortex-m*) echo -mv=7m3 ;;
3087 armv6*|arm11*) echo -mv=6 ;;
3088 armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3089 echo -mv=5e ;;
3090 armv4*|arm7*|arm9[24]*) echo -mv=4 ;;
3091 esac
3092 ;;
3093 -mfpu=neon) echo --float_support=vfpv3 --neon ;;
3094 -mfpu=vfp) echo --float_support=vfpv2 ;;
3095 -mfpu=vfpv3) echo --float_support=vfpv3 ;;
3096 -mfpu=vfpv3-d16) echo --float_support=vfpv3d16 ;;
3097 -msoft-float) echo --float_support=vfplib ;;
3098 -O[0-3]|-mf=*) echo $flag ;;
3099 -g) echo -g -mn ;;
3100 -pds=*) echo $flag ;;
3101 -D*|-I*) echo $flag ;;
3102 --gcc|--abi=*) echo $flag ;;
3103 -me) echo $flag ;;
3104 esac
3105 done
3106 }
3107
3108 probe_cc(){
3109 pfx=$1
3110 _cc=$2
3111
3112 unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3113 unset _ld_o _ldflags _ld_lib _ld_path
3114 unset _depflags _DEPCMD _DEPFLAGS
3115 _flags_filter=echo
3116
3117 if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3118 _type=llvm_gcc
3119 gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3120 _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3121 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3122 _cflags_speed='-O3'
3123 _cflags_size='-Os'
3124 elif $_cc -v 2>&1 | grep -qi ^gcc; then
3125 _type=gcc
3126 gcc_version=$($_cc --version | head -n1)
3127 gcc_basever=$($_cc -dumpversion)
3128 gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3129 gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3130 _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3131 if ! $_cc -dumpversion | grep -q '^2\.'; then
3132 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3133 fi
3134 _cflags_speed='-O3'
3135 _cflags_size='-Os'
3136 elif $_cc --version 2>/dev/null | grep -q ^icc; then
3137 _type=icc
3138 _ident=$($_cc --version | head -n1)
3139 _depflags='-MMD'
3140 _cflags_speed='-O3'
3141 _cflags_size='-Os'
3142 _cflags_noopt='-O1'
3143 elif $_cc -v 2>&1 | grep -q xlc; then
3144 _type=xlc
3145 _ident=$($_cc -qversion 2>/dev/null | head -n1)
3146 _cflags_speed='-O5'
3147 _cflags_size='-O5 -qcompact'
3148 elif $_cc -V 2>/dev/null | grep -q Compaq; then
3149 _type=ccc
3150 _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3151 _DEPFLAGS='-M'
3152 _cflags_speed='-fast'
3153 _cflags_size='-O1'
3154 _flags_filter=ccc_flags
3155 elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3156 test -d "$sysroot" || die "No valid sysroot specified."
3157 _type=armcc
3158 _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3159 armcc_conf="$PWD/armcc.conf"
3160 $_cc --arm_linux_configure \
3161 --arm_linux_config_file="$armcc_conf" \
3162 --configure_sysroot="$sysroot" \
3163 --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3164 die "Error creating armcc configuration file."
3165 $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3166 _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3167 as_default="${cross_prefix}gcc"
3168 _depflags='-MMD'
3169 _cflags_speed='-O3'
3170 _cflags_size='-Os'
3171 elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3172 _type=tms470
3173 _ident=$($_cc -version | head -n1 | tr -s ' ')
3174 _flags='--gcc --abi=eabi -me'
3175 _cc_e='-ppl -fe=$@'
3176 _cc_o='-fe=$@'
3177 _depflags='-ppa -ppd=$(@:.o=.d)'
3178 _cflags_speed='-O3 -mf=5'
3179 _cflags_size='-O3 -mf=2'
3180 _flags_filter=tms470_flags
3181 elif $_cc -v 2>&1 | grep -q clang; then
3182 _type=clang
3183 _ident=$($_cc --version 2>/dev/null | head -n1)
3184 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3185 _cflags_speed='-O3'
3186 _cflags_size='-Os'
3187 elif $_cc -V 2>&1 | grep -q Sun; then
3188 _type=suncc
3189 _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3190 _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3191 _DEPFLAGS='-xM1 -xc99'
3192 _ldflags='-std=c99'
3193 _cflags_speed='-O5'
3194 _cflags_size='-O5 -xspace'
3195 _flags_filter=suncc_flags
3196 elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3197 _type=pathscale
3198 _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3199 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3200 _cflags_speed='-O2'
3201 _cflags_size='-Os'
3202 _flags_filter='filter_out -Wdisabled-optimization'
3203 elif $_cc -v 2>&1 | grep -q Open64; then
3204 _type=open64
3205 _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3206 _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3207 _cflags_speed='-O2'
3208 _cflags_size='-Os'
3209 _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3210 elif $_cc -V 2>&1 | grep -q Portland; then
3211 _type=pgi
3212 _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3213 opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3214 _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3215 _cflags_size="-O2 -Munroll=c:1 $opt_common"
3216 _cflags_noopt="-O1"
3217 _flags_filter=pgi_flags
3218 elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3219 _type=armasm
3220 _ident=$($_cc | head -n1)
3221 # 4509: "This form of conditional instruction is deprecated"
3222 _flags="-nologo -ignore 4509"
3223 _flags_filter=armasm_flags
3224 elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3225 _type=msvc
3226 _ident=$($_cc 2>&1 | head -n1)
3227 _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3228 _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3229 _cflags_speed="-O2"
3230 _cflags_size="-O1"
3231 if $_cc -nologo- 2>&1 | grep -q Linker; then
3232 _ld_o='-out:$@'
3233 else
3234 _ld_o='-Fe$@'
3235 fi
3236 _cc_o='-Fo$@'
3237 _cc_e='-P -Fi$@'
3238 _flags_filter=msvc_flags
3239 _ld_lib='lib%.a'
3240 _ld_path='-libpath:'
3241 _flags='-nologo'
3242 elif $_cc 2>&1 | grep -q Intel; then
3243 _type=icl
3244 _ident=$($_cc 2>&1 | head -n1)
3245 _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3246 # Not only is O3 broken on 13.x+ but it is slower on all previous
3247 # versions (tested) as well.
3248 _cflags_speed="-O2"
3249 _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3250 if $_cc 2>&1 | grep -q Linker; then
3251 _ld_o='-out:$@'
3252 else
3253 _ld_o='-Fe$@'
3254 fi
3255 _cc_o='-Fo$@'
3256 _cc_e='-P'
3257 _flags_filter=icl_flags
3258 _ld_lib='lib%.a'
3259 _ld_path='-libpath:'
3260 # -Qdiag-error to make icl error when seeing certain unknown arguments
3261 _flags='-nologo -Qdiag-error:4044,10157'
3262 # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3263 # with MSVC which enables it by default.
3264 _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3265 elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3266 # lld can emulate multiple different linkers; in ms link.exe mode,
3267 # the -? parameter gives the help output which contains an identifyable
3268 # string, while it gives an error in other modes.
3269 _type=lld-link
3270 # The link.exe mode doesn't have a switch for getting the version,
3271 # but we can force it back to gnu mode and get the version from there.
3272 _ident=$($_cc -flavor gnu --version)
3273 _ld_o='-out:$@'
3274 _flags_filter=msvc_flags
3275 _ld_lib='lib%.a'
3276 _ld_path='-libpath:'
3277 elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3278 _type=cparser
3279 _ident=$($_cc --version | head -n1)
3280 _depflags='-MMD'
3281 _cflags_speed='-O4'
3282 _cflags_size='-O2'
3283 _flags_filter=cparser_flags
3284 fi
3285
3286 eval ${pfx}_type=\$_type
3287 eval ${pfx}_ident=\$_ident
3288 }
3289
3290 set_ccvars(){
3291 eval ${1}_C=\${_cc_c-\${${1}_C}}
3292 eval ${1}_E=\${_cc_e-\${${1}_E}}
3293 eval ${1}_O=\${_cc_o-\${${1}_O}}
3294
3295 if [ -n "$_depflags" ]; then
3296 eval ${1}_DEPFLAGS=\$_depflags
3297 else
3298 eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3299 eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3300 eval DEP${1}FLAGS=\$_flags
3301 fi
3302 }
3303
3304 probe_cc cc "$cc"
3305 cflags_filter=$_flags_filter
3306 cflags_speed=$_cflags_speed
3307 cflags_size=$_cflags_size
3308 cflags_noopt=$_cflags_noopt
3309 add_cflags $_flags $_cflags
3310 cc_ldflags=$_ldflags
3311 set_ccvars CC
3312
3313 probe_cc hostcc "$host_cc"
3314 host_cflags_filter=$_flags_filter
3315 add_host_cflags $_flags $_cflags
3316 set_ccvars HOSTCC
3317
3318 test -n "$cc_type" && enable $cc_type ||
3319 warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3320
3321 : ${as_default:=$cc}
3322 : ${objcc_default:=$cc}
3323 : ${dep_cc_default:=$cc}
3324 : ${ld_default:=$cc}
3325 : ${host_ld_default:=$host_cc}
3326 set_default ar as objcc dep_cc ld host_ld
3327
3328 probe_cc as "$as"
3329 asflags_filter=$_flags_filter
3330 add_asflags $_flags $_cflags
3331 set_ccvars AS
3332
3333 probe_cc objcc "$objcc"
3334 objcflags_filter=$_flags_filter
3335 add_objcflags $_flags $_cflags
3336 set_ccvars OBJC
3337
3338 probe_cc ld "$ld"
3339 ldflags_filter=$_flags_filter
3340 add_ldflags $_flags $_ldflags
3341 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3342 LD_O=${_ld_o-$LD_O}
3343 LD_LIB=${_ld_lib-$LD_LIB}
3344 LD_PATH=${_ld_path-$LD_PATH}
3345
3346 probe_cc hostld "$host_ld"
3347 host_ldflags_filter=$_flags_filter
3348 add_host_ldflags $_flags $_ldflags
3349 HOSTLD_O=${_ld_o-$HOSTLD_O}
3350
3351 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3352 probe_cc depcc "$dep_cc"
3353 CCDEP=${_DEPCMD:-$DEPCMD}
3354 CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3355 DEPCCFLAGS=$_flags
3356 fi
3357
3358 if $ar 2>&1 | grep -q Microsoft; then
3359 arflags="-nologo"
3360 ar_o='-out:$@'
3361 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3362 arflags="rq"
3363 ar_o='$@'
3364 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3365 arflags='-Xany -r -c'
3366 ar_o='$@'
3367 else
3368 arflags="rc"
3369 ar_o='$@'
3370 fi
3371
3372 add_cflags $extra_cflags
3373 add_objcflags $extra_objcflags
3374 add_asflags $extra_cflags
3375
3376 if test -n "$sysroot"; then
3377 case "$cc_type" in
3378 gcc|llvm_gcc|clang)
3379 add_cppflags --sysroot="$sysroot"
3380 add_ldflags --sysroot="$sysroot"
3381 ;;
3382 tms470)
3383 add_cppflags -I"$sysinclude"
3384 add_ldflags --sysroot="$sysroot"
3385 ;;
3386 esac
3387 fi
3388
3389 if test "$cpu" = host; then
3390 enabled cross_compile &&
3391 die "--cpu=host makes no sense when cross-compiling."
3392
3393 case "$cc_type" in
3394 gcc|llvm_gcc)
3395 check_native(){
3396 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3397 sed -n "/cc1.*$1=/{
3398 s/.*$1=\\([^ ]*\\).*/\\1/
3399 p
3400 q
3401 }" $TMPE
3402 }
3403 cpu=$(check_native -march || check_native -mcpu)
3404 ;;
3405 esac
3406
3407 test "${cpu:-host}" = host &&
3408 die "--cpu=host not supported with compiler $cc"
3409 fi
3410
3411 # Deal with common $arch aliases
3412 case "$arch" in
3413 aarch64|arm64)
3414 arch="aarch64"
3415 ;;
3416 arm*)
3417 arch="arm"
3418 ;;
3419 mips*|IP*)
3420 case "$arch" in
3421 *el)
3422 add_cppflags -EL
3423 add_ldflags -EL
3424 ;;
3425 *eb)
3426 add_cppflags -EB
3427 add_ldflags -EB
3428 ;;
3429 esac
3430 arch="mips"
3431 ;;
3432 parisc*|hppa*)
3433 arch="parisc"
3434 ;;
3435 "Power Macintosh"|ppc*|powerpc*)
3436 arch="ppc"
3437 ;;
3438 s390|s390x)
3439 arch="s390"
3440 ;;
3441 sh4|sh)
3442 arch="sh4"
3443 ;;
3444 sun4u|sparc*)
3445 arch="sparc"
3446 ;;
3447 tilegx|tile-gx)
3448 arch="tilegx"
3449 ;;
3450 i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3451 arch="x86"
3452 ;;
3453 esac
3454
3455 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3456 enable $arch
3457
3458 # Add processor-specific flags
3459 if enabled aarch64; then
3460
3461 case $cpu in
3462 armv*)
3463 cpuflags="-march=$cpu"
3464 ;;
3465 *)
3466 cpuflags="-mcpu=$cpu"
3467 ;;
3468 esac
3469
3470 elif enabled alpha; then
3471
3472 cpuflags="-mcpu=$cpu"
3473
3474 elif enabled arm; then
3475
3476 check_arm_arch() {
3477 check_cpp_condition stddef.h \
3478 "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3479 $cpuflags
3480 }
3481
3482 probe_arm_arch() {
3483 if check_arm_arch 4; then echo armv4
3484 elif check_arm_arch 4T; then echo armv4t
3485 elif check_arm_arch 5; then echo armv5
3486 elif check_arm_arch 5E; then echo armv5e
3487 elif check_arm_arch 5T; then echo armv5t
3488 elif check_arm_arch 5TE; then echo armv5te
3489 elif check_arm_arch 5TEJ; then echo armv5te
3490 elif check_arm_arch 6; then echo armv6
3491 elif check_arm_arch 6J; then echo armv6j
3492 elif check_arm_arch 6K; then echo armv6k
3493 elif check_arm_arch 6Z; then echo armv6z
3494 elif check_arm_arch 6ZK; then echo armv6zk
3495 elif check_arm_arch 6T2; then echo armv6t2
3496 elif check_arm_arch 7; then echo armv7
3497 elif check_arm_arch 7A 7_A; then echo armv7-a
3498 elif check_arm_arch 7S; then echo armv7-a
3499 elif check_arm_arch 7R 7_R; then echo armv7-r
3500 elif check_arm_arch 7M 7_M; then echo armv7-m
3501 elif check_arm_arch 7EM 7E_M; then echo armv7-m
3502 elif check_arm_arch 8A 8_A; then echo armv8-a
3503 fi
3504 }
3505
3506 [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3507
3508 case $cpu in
3509 armv*)
3510 cpuflags="-march=$cpu"
3511 subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3512 ;;
3513 *)
3514 cpuflags="-mcpu=$cpu"
3515 case $cpu in
3516 cortex-a*) subarch=armv7a ;;
3517 cortex-r*) subarch=armv7r ;;
3518 cortex-m*) enable thumb; subarch=armv7m ;;
3519 arm11*) subarch=armv6 ;;
3520 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3521 armv4*|arm7*|arm9[24]*) subarch=armv4 ;;
3522 *) subarch=$(probe_arm_arch) ;;
3523 esac
3524 ;;
3525 esac
3526
3527 case "$subarch" in
3528 armv5t*) enable fast_clz ;;
3529 armv[6-8]*) enable fast_clz fast_unaligned ;;
3530 esac
3531
3532 elif enabled avr32; then
3533
3534 case $cpu in
3535 ap7[02]0[0-2])
3536 subarch="avr32_ap"
3537 cpuflags="-mpart=$cpu"
3538 ;;
3539 ap)
3540 subarch="avr32_ap"
3541 cpuflags="-march=$cpu"
3542 ;;
3543 uc3[ab]*)
3544 subarch="avr32_uc"
3545 cpuflags="-mcpu=$cpu"
3546 ;;
3547 uc)
3548 subarch="avr32_uc"
3549 cpuflags="-march=$cpu"
3550 ;;
3551 esac
3552
3553 elif enabled bfin; then
3554
3555 cpuflags="-mcpu=$cpu"
3556
3557 elif enabled mips; then
3558
3559 cpuflags="-march=$cpu"
3560
3561 elif enabled ppc; then
3562
3563 disable ldbrx
3564
3565 case $(tolower $cpu) in
3566 601|ppc601|powerpc601)
3567 cpuflags="-mcpu=601"
3568 disable altivec
3569 ;;
3570 603*|ppc603*|powerpc603*)
3571 cpuflags="-mcpu=603"
3572 disable altivec
3573 ;;
3574 604*|ppc604*|powerpc604*)
3575 cpuflags="-mcpu=604"
3576 disable altivec
3577 ;;
3578 g3|75*|ppc75*|powerpc75*)
3579 cpuflags="-mcpu=750"
3580 disable altivec
3581 ;;
3582 g4|745*|ppc745*|powerpc745*)
3583 cpuflags="-mcpu=7450"
3584 disable vsx
3585 ;;
3586 74*|ppc74*|powerpc74*)
3587 cpuflags="-mcpu=7400"
3588 disable vsx
3589 ;;
3590 g5|970|ppc970|powerpc970)
3591 cpuflags="-mcpu=970"
3592 disable vsx
3593 ;;
3594 power[3-6]*)
3595 cpuflags="-mcpu=$cpu"
3596 disable vsx
3597 ;;
3598 power[7-8]*)
3599 cpuflags="-mcpu=$cpu"
3600 enable ldbrx
3601 ;;
3602 cell)
3603 cpuflags="-mcpu=cell"
3604 enable ldbrx
3605 disable vsx
3606 ;;
3607 e500mc)
3608 cpuflags="-mcpu=e500mc"
3609 disable altivec
3610 ;;
3611 e500v2)
3612 cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3613 disable altivec
3614 disable dcbzl
3615 ;;
3616 e500)
3617 cpuflags="-mcpu=8540 -mhard-float"
3618 disable altivec
3619 disable dcbzl
3620 ;;
3621 esac
3622
3623 elif enabled sparc; then
3624
3625 case $cpu in
3626 cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3627 cpuflags="-mcpu=$cpu"
3628 ;;
3629 ultrasparc*|niagara[234])
3630 cpuflags="-mcpu=$cpu"
3631 ;;
3632 esac
3633
3634 elif enabled x86; then
3635
3636 case $cpu in
3637 i[345]86|pentium)
3638 cpuflags="-march=$cpu"
3639 disable i686
3640 disable mmx
3641 ;;
3642 # targets that do NOT support nopl and conditional mov (cmov)
3643 pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3644 cpuflags="-march=$cpu"
3645 disable i686
3646 ;;
3647 # targets that do support nopl and conditional mov (cmov)
3648 i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3649 cpuflags="-march=$cpu"
3650 enable i686
3651 enable fast_cmov
3652 ;;
3653 # targets that do support conditional mov but on which it's slow
3654 pentium4|pentium4m|prescott|nocona)
3655 cpuflags="-march=$cpu"
3656 enable i686
3657 disable fast_cmov
3658 ;;
3659 esac
3660
3661 fi
3662
3663 if [ "$cpu" != generic ]; then
3664 add_cflags $cpuflags
3665 add_asflags $cpuflags
3666 test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3667 fi
3668
3669 # compiler sanity check
3670 check_exec <<EOF
3671 int main(void){ return 0; }
3672 EOF
3673 if test "$?" != 0; then
3674 echo "$cc is unable to create an executable file."
3675 if test -z "$cross_prefix" && ! enabled cross_compile ; then
3676 echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3677 echo "Only do this if you know what cross compiling means."
3678 fi
3679 die "C compiler test failed."
3680 fi
3681
3682 add_cppflags -D_ISOC99_SOURCE
3683 check_cflags -std=c99
3684 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3685 #include <stdlib.h>
3686 EOF
3687 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3688 #include <stdlib.h>
3689 EOF
3690
3691 add_host_cppflags -D_ISOC99_SOURCE
3692 check_host_cflags -std=c99
3693 check_host_cflags -Wall
3694 check_host_cflags -O3
3695
3696 check_64bit(){
3697 arch32=$1
3698 arch64=$2
3699 expr=$3
3700 check_code cc "" "int test[2*($expr) - 1]" &&
3701 subarch=$arch64 || subarch=$arch32
3702 }
3703
3704 case "$arch" in
3705 aarch64|alpha|ia64)
3706 spic=$shared
3707 ;;
3708 mips)
3709 check_64bit mips mips64 '_MIPS_SIM > 1'
3710 spic=$shared
3711 ;;
3712 parisc)
3713 check_64bit parisc parisc64 'sizeof(void *) > 4'
3714 spic=$shared
3715 ;;
3716 ppc)
3717 check_64bit ppc ppc64 'sizeof(void *) > 4'
3718 spic=$shared
3719 ;;
3720 s390)
3721 check_64bit s390 s390x 'sizeof(void *) > 4'
3722 spic=$shared
3723 ;;
3724 sparc)
3725 check_64bit sparc sparc64 'sizeof(void *) > 4'
3726 spic=$shared
3727 ;;
3728 x86)
3729 check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3730 if test "$subarch" = "x86_64"; then
3731 spic=$shared
3732 fi
3733 ;;
3734 esac
3735
3736 enable $subarch
3737 enabled spic && enable_weak pic
3738
3739 # OS specific
3740 case $target_os in
3741 aix)
3742 SHFLAGS=-shared
3743 add_cppflags '-I\$(SRC_PATH)/compat/aix'
3744 enabled shared && add_ldflags -Wl,-brtl
3745 ;;
3746 android)
3747 disable symver
3748 enable section_data_rel_ro
3749 SLIB_INSTALL_NAME='$(SLIBNAME)'
3750 SLIB_INSTALL_LINKS=
3751 SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3752 ;;
3753 haiku)
3754 prefix_default="/boot/common"
3755 network_extralibs="-lnetwork"
3756 host_libs=
3757 ;;
3758 sunos)
3759 SHFLAGS='-shared -Wl,-h,$$(@F)'
3760 enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3761 network_extralibs="-lsocket -lnsl"
3762 # When using suncc to build, the Solaris linker will mark
3763 # an executable with each instruction set encountered by
3764 # the Solaris assembler. As our libraries contain their own
3765 # guards for processor-specific code, instead suppress
3766 # generation of the HWCAPS ELF section on Solaris x86 only.
3767 enabled_all suncc x86 &&
3768 echo "hwcap_1 = OVERRIDE;" > mapfile &&
3769 add_ldflags -Wl,-M,mapfile
3770 nm_default='nm -P -g'
3771 version_script='-M'
3772 VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3773 ;;
3774 netbsd)
3775 disable symver
3776 oss_indev_extralibs="-lossaudio"
3777 oss_outdev_extralibs="-lossaudio"
3778 ;;
3779 openbsd|bitrig)
3780 disable symver
3781 SHFLAGS='-shared'
3782 SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3783 SLIB_INSTALL_LINKS=
3784 oss_indev_extralibs="-lossaudio"
3785 oss_outdev_extralibs="-lossaudio"
3786 ;;
3787 dragonfly)
3788 disable symver
3789 ;;
3790 freebsd)
3791 ;;
3792 bsd/os)
3793 add_extralibs -lpoll -lgnugetopt
3794 ;;
3795 darwin)
3796 enabled ppc && add_asflags -force_cpusubtype_ALL
3797 SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3798 enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3799 add_ldflags -Wl,-dynamic,-search_paths_first
3800 SLIBSUF=".dylib"
3801 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3802 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3803 objformat="macho"
3804 enabled x86_64 && objformat="macho64"
3805 enabled_any pic shared ||
3806 { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3807 check_header dispatch/dispatch.h &&
3808 add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3809 ;;
3810 msys*)
3811 die "Native MSYS builds are discouraged, please use the MINGW environment."
3812 ;;
3813 mingw32*|mingw64*)
3814 if test $target_os = "mingw32ce"; then
3815 disable network
3816 else
3817 target_os=mingw32
3818 fi
3819 LIBTARGET=i386
3820 if enabled x86_64; then
3821 LIBTARGET="i386:x86-64"
3822 elif enabled arm; then
3823 LIBTARGET=arm-wince
3824 fi
3825 check_ldflags -Wl,--nxcompat
3826 check_ldflags -Wl,--dynamicbase
3827 shlibdir_default="$bindir_default"
3828 SLIBPREF=""
3829 SLIBSUF=".dll"
3830 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3831 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3832 SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3833 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3834 SLIB_INSTALL_LINKS=
3835 SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3836 SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3837 SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3838 objformat="win32"
3839 dlltool="${cross_prefix}dlltool"
3840 ranlib=:
3841 enable dos_paths
3842 ;;
3843 win32|win64)
3844 disable symver
3845 if enabled shared; then
3846 # Link to the import library instead of the normal static library
3847 # for shared libs.
3848 LD_LIB='%.lib'
3849 # Cannot build both shared and static libs with MSVC or icl.
3850 disable static
3851 fi
3852 shlibdir_default="$bindir_default"
3853 SLIBPREF=""
3854 SLIBSUF=".dll"
3855 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3856 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3857 SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3858 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3859 SLIB_INSTALL_LINKS=
3860 SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3861 SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3862 SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3863 objformat="win32"
3864 ranlib=:
3865 enable dos_paths
3866 ;;
3867 cygwin*)
3868 target_os=cygwin
3869 shlibdir_default="$bindir_default"
3870 SLIBPREF="cyg"
3871 SLIBSUF=".dll"
3872 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3873 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3874 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3875 SLIB_INSTALL_LINKS=
3876 SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3877 SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3878 objformat="win32"
3879 enable dos_paths
3880 ;;
3881 *-dos|freedos|opendos)
3882 network_extralibs="-lsocket"
3883 objformat="coff"
3884 enable dos_paths
3885 add_cppflags -U__STRICT_ANSI__
3886 ;;
3887 linux)
3888 enable dv1394
3889 enable section_data_rel_ro
3890 ;;
3891 irix*)
3892 target_os=irix
3893 ranlib="echo ignoring ranlib"
3894 ;;
3895 os/2*)
3896 ln_s="cp -f"
3897 objformat="aout"
3898 add_cppflags -D_GNU_SOURCE
3899 add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3900 SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3901 LIBSUF="_s.a"
3902 SLIBPREF=""
3903 SLIBSUF=".dll"
3904 SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3905 SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3906 SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3907 echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3908 echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3909 echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3910 emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3911 SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3912 emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3913 SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3914 enable dos_paths
3915 ;;
3916 gnu/kfreebsd)
3917 add_cppflags -D_BSD_SOURCE
3918 ;;
3919 gnu)
3920 ;;
3921 qnx)
3922 add_cppflags -D_QNX_SOURCE
3923 network_extralibs="-lsocket"
3924 ;;
3925 symbian)
3926 SLIBSUF=".dll"
3927 enable dos_paths
3928 add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3929 add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3930 add_ldflags -Wl,--target1-abs,--no-undefined \
3931 -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3932 -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3933 add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3934 -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3935 -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3936 ;;
3937 osf1)
3938 add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3939 ;;
3940 minix)
3941 ;;
3942 plan9)
3943 add_cppflags -D_C99_SNPRINTF_EXTENSION \
3944 -D_REENTRANT_SOURCE \
3945 -D_RESEARCH_SOURCE \
3946 -DFD_SETSIZE=96 \
3947 -DHAVE_SOCK_OPTS
3948 add_compat strtod.o strtod=avpriv_strtod
3949 network_extralibs='-lbsd'
3950 exeobjs=compat/plan9/main.o
3951 cp_f='cp'
3952 ;;
3953 none)
3954 ;;
3955 *)
3956 die "Unknown OS '$target_os'."
3957 ;;
3958 esac
3959
3960 # determine libc flavour
3961
3962 probe_libc(){
3963 pfx=$1
3964 pfx_no_=${pfx%_}
3965 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3966 if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3967 eval ${pfx}libc_type=uclibc
3968 add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3969 elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3970 eval ${pfx}libc_type=glibc
3971 add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3972 # MinGW headers can be installed on Cygwin, so check for newlib first.
3973 elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3974 eval ${pfx}libc_type=newlib
3975 add_${pfx}cppflags -U__STRICT_ANSI__
3976 # MinGW64 is backwards compatible with MinGW32, so check for it first.
3977 elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3978 eval ${pfx}libc_type=mingw64
3979 add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3980 eval test \$${pfx_no_}cc_type = "gcc" &&
3981 add_${pfx}cppflags -D__printf__=__gnu_printf__
3982 elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION" ||
3983 check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3984 eval ${pfx}libc_type=mingw32
3985 check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3986 (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3987 die "ERROR: MinGW32 runtime version must be >= 3.15."
3988 add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3989 eval test \$${pfx_no_}cc_type = "gcc" &&
3990 add_${pfx}cppflags -D__printf__=__gnu_printf__
3991 elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3992 eval ${pfx}libc_type=msvcrt
3993 if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3994 if [ "$pfx" = host_ ]; then
3995 add_host_cppflags -Dsnprintf=_snprintf
3996 else
3997 add_compat strtod.o strtod=avpriv_strtod
3998 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf \
3999 _snprintf=avpriv_snprintf \
4000 vsnprintf=avpriv_vsnprintf
4001 fi
4002 fi
4003 add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4004 # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4005 # 0x601 by default unless something else is set by the user.
4006 # This can easily lead to us detecting functions only present
4007 # in such new versions and producing binaries requiring windows 7.0.
4008 # Therefore explicitly set the default to XP unless the user has
4009 # set something else on the command line.
4010 # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4011 # family. For these cases, configure is free to use any functions
4012 # found in the SDK headers by default. (Alternatively, we could force
4013 # _WIN32_WINNT to 0x0602 in that case.)
4014 check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4015 { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4016 #ifdef WINAPI_FAMILY
4017 #include <winapifamily.h>
4018 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4019 #error not desktop
4020 #endif
4021 #endif
4022 EOF
4023 if [ "$pfx" = "" ]; then
4024 check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4025 fi
4026 elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4027 eval ${pfx}libc_type=klibc
4028 elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4029 eval ${pfx}libc_type=bionic
4030 elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4031 eval ${pfx}libc_type=solaris
4032 add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4033 else
4034 eval ${pfx}libc_type=default
4035 add_${pfx}cppflags -D_DEFAULT_SOURCE
4036 fi
4037 }
4038
4039 probe_libc
4040 test -n "$libc_type" && enable libc_$libc_type
4041 probe_libc host_
4042 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4043
4044 case $libc_type in
4045 bionic)
4046 add_compat strtod.o strtod=avpriv_strtod
4047 ;;
4048 esac
4049
4050 # hacks for compiler/libc/os combinations
4051
4052 if enabled_all tms470 libc_glibc; then
4053 CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4054 add_cppflags -D__USER_LABEL_PREFIX__=
4055 add_cppflags -D__builtin_memset=memset
4056 add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4057 add_cflags -pds=48 # incompatible redefinition of macro
4058 fi
4059
4060 if enabled_all ccc libc_glibc; then
4061 add_ldflags -Wl,-z,now # calls to libots crash without this
4062 fi
4063
4064 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4065 add_cppflags '-I\$(SRC_PATH)/compat/float'
4066
4067 esc(){
4068 echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4069 }
4070
4071 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4072
4073 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4074
4075 set_default $PATHS_LIST
4076 set_default nm
4077
4078 # we need to build at least one lib type
4079 if ! enabled_any static shared; then
4080 cat <<EOF
4081 At least one library type must be built.
4082 Specify --enable-static to build the static libraries or --enable-shared to
4083 build the shared libraries as well. To only build the shared libraries specify
4084 --disable-static in addition to --enable-shared.
4085 EOF
4086 exit 1
4087 fi
4088
4089 die_license_disabled() {
4090 enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4091 }
4092
4093 die_license_disabled gpl libcdio
4094 die_license_disabled gpl libx264
4095 die_license_disabled gpl libx265
4096 die_license_disabled gpl libxavs
4097 die_license_disabled gpl libxvid
4098 die_license_disabled gpl x11grab
4099
4100 die_license_disabled nonfree cuda
4101 die_license_disabled nonfree libfaac
4102 die_license_disabled nonfree libfdk_aac
4103 die_license_disabled nonfree libnpp
4104 die_license_disabled nonfree openssl
4105
4106 die_license_disabled version3 libopencore_amrnb
4107 die_license_disabled version3 libopencore_amrwb
4108 die_license_disabled version3 libvo_aacenc
4109 die_license_disabled version3 libvo_amrwbenc
4110
4111 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4112
4113 disabled optimizations || check_cflags -fomit-frame-pointer
4114
4115 enable_weak_pic() {
4116 disabled pic && return
4117 enable pic
4118 add_cppflags -DPIC
4119 case "$target_os" in
4120 mingw*|cygwin*)
4121 ;;
4122 *)
4123 add_cflags -fPIC
4124 ;;
4125 esac
4126 add_asflags -fPIC
4127 }
4128
4129 enabled pic && enable_weak_pic
4130
4131 check_cc <<EOF || die "Symbol mangling check failed."
4132 int ff_extern;
4133 EOF
4134 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4135 extern_prefix=${sym%%ff_extern*}
4136
4137 check_cc <<EOF && enable_weak inline_asm
4138 void foo(void) { __asm__ volatile ("" ::); }
4139 EOF
4140
4141 _restrict=
4142 for restrict_keyword in restrict __restrict__ __restrict; do
4143 check_cc <<EOF && _restrict=$restrict_keyword && break
4144 void foo(char * $restrict_keyword p);
4145 EOF
4146 done
4147
4148 check_cc <<EOF && enable pragma_deprecated
4149 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4150 EOF
4151
4152 check_cc <<EOF && enable attribute_packed
4153 struct { int x; } __attribute__((packed)) x;
4154 EOF
4155
4156 check_cc <<EOF && enable attribute_may_alias
4157 union { int x; } __attribute__((may_alias)) x;
4158 EOF
4159
4160 check_cc <<EOF || die "endian test failed"
4161 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4162 EOF
4163 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4164
4165 check_gas() {
4166 log "check_gas using '$as' as AS"
4167 # :vararg is used on aarch64, arm and ppc altivec
4168 check_as <<EOF || return 1
4169 .macro m n, y:vararg=0
4170 \n: .int \y
4171 .endm
4172 m x
4173 EOF
4174 # .altmacro is only used in arm asm
4175 ! enabled arm || check_as <<EOF || return 1
4176 .altmacro
4177 EOF
4178 enable gnu_as
4179 return 0
4180 }
4181
4182 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4183 nogas=:
4184 enabled_any arm aarch64 && nogas=die
4185 enabled_all ppc altivec && nogas=warn
4186 as_noop=-v
4187
4188 case $as_type in
4189 arm*) gaspp_as_type=armasm; as_noop=-h ;;
4190 gcc) gaspp_as_type=gas ;;
4191 *) gaspp_as_type=$as_type ;;
4192 esac
4193
4194 [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4195
4196 check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4197 gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4198
4199 if ! check_gas ; then
4200 as=${gas:=$as}
4201 check_gas || \
4202 $nogas "GNU assembler not found, install/update gas-preprocessor"
4203 fi
4204
4205 check_as <<EOF && enable as_func
4206 .func test
4207 .endfunc
4208 EOF
4209 fi
4210
4211 check_inline_asm inline_asm_labels '"1:\n"'
4212
4213 if enabled aarch64; then
4214 enabled armv8 && check_insn armv8 'prfm pldl1strm, [x0]'
4215 # internal assembler in clang 3.3 does not support this instruction
4216 enabled neon && check_insn neon 'ext v0.8B, v0.8B, v1.8B, #1'
4217 enabled vfp && check_insn vfp 'fmadd d0, d0, d1, d2'
4218
4219 map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4220
4221 elif enabled alpha; then
4222
4223 check_cflags -mieee
4224
4225 elif enabled arm; then
4226
4227 enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4228 check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4229 enabled thumb && check_cflags -mthumb || check_cflags -marm
4230
4231 if check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4232 enable vfp_args
4233 elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4234 enable vfp_args
4235 elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4236 case "${cross_prefix:-$cc}" in
4237 *hardfloat*) enable vfp_args; fpabi=vfp ;;
4238 *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4239 __asm__ (".eabi_attribute 28, 1");
4240 int main(void) { return 0; }
4241 EOF
4242 esac
4243 warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4244 fi
4245
4246 enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4247 enabled armv6 && check_insn armv6 'sadd16 r0, r0, r0'
4248 enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4249 enabled neon && check_insn neon 'vadd.i16 q0, q0, q0'
4250 enabled vfp && check_insn vfp 'fadds s0, s0, s0'
4251 enabled vfpv3 && check_insn vfpv3 'vmov.f32 s0, #1.0'
4252
4253 [ $target_os = linux ] || [ $target_os = android ] ||
4254 map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4255 $ARCH_EXT_LIST_ARM
4256
4257 check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4258
4259 check_as <<EOF && enable as_dn_directive
4260 ra .dn d0.i16
4261 .unreq ra
4262 EOF
4263 check_as <<EOF && enable as_fpu_directive
4264 .fpu neon
4265 EOF
4266
4267 # llvm's integrated assembler supports .object_arch from llvm 3.5
4268 [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4269 .object_arch armv4
4270 EOF
4271
4272 [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4273
4274 elif enabled mips; then
4275
4276 check_inline_asm loongson '"dmult.g $1, $2, $3"'
4277
4278 # make sure that only an instruction set is enabled
4279 disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4280
4281 if enabled mips64; then
4282 check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4283 check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4284 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4285 else
4286 check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4287 check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4288 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4289 fi
4290
4291 elif enabled parisc; then
4292
4293 if enabled gcc; then
4294 case $($cc -dumpversion) in
4295 4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4296 esac
4297 fi
4298
4299 elif enabled ppc; then
4300
4301 enable local_aligned_8 local_aligned_16
4302
4303 check_inline_asm dcbzl '"dcbzl 0, %0" :: "r"(0)'
4304 check_inline_asm ibm_asm '"add 0, 0, 0"'
4305 check_inline_asm ppc4xx '"maclhw r10, r11, r12"'
4306 check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4307
4308 # AltiVec flags: The FSF version of GCC differs from the Apple version
4309 if enabled altivec; then
4310 check_cflags -maltivec -mabi=altivec &&
4311 { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4312 check_cflags -faltivec
4313
4314 # check if our compiler supports Motorola AltiVec C API
4315 check_cc <<EOF || disable altivec
4316 $inc_altivec_h
4317 int main(void) {
4318 vector signed int v1 = (vector signed int) { 0 };
4319 vector signed int v2 = (vector signed int) { 1 };
4320 v1 = vec_add(v1, v2);
4321 return 0;
4322 }
4323 EOF
4324
4325 enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4326 fi
4327
4328 if enabled vsx; then
4329 check_cflags -mvsx &&
4330 check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4331 fi
4332
4333 if enabled power8; then
4334 check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4335 fi
4336
4337 elif enabled x86; then
4338
4339 check_builtin rdtsc intrin.h "__rdtsc()"
4340 check_builtin mm_empty mmintrin.h "_mm_empty()"
4341
4342 enable local_aligned_8 local_aligned_16
4343
4344 # check whether EBP is available on x86
4345 # As 'i' is stored on the stack, this program will crash
4346 # if the base pointer is used to access it because the
4347 # base pointer is cleared in the inline assembly code.
4348 check_exec_crash <<EOF && enable ebp_available
4349 volatile int i=0;
4350 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4351 return i;
4352 EOF
4353
4354 # check whether EBX is available on x86
4355 check_inline_asm ebx_available '""::"b"(0)' &&
4356 check_inline_asm ebx_available '"":::"%ebx"'
4357
4358 # check whether xmm clobbers are supported
4359 check_inline_asm xmm_clobbers '"":::"%xmm0"'
4360
4361 # check whether binutils is new enough to compile SSSE3/MMXEXT
4362 enabled ssse3 && check_inline_asm ssse3_inline '"pabsw %xmm0, %xmm0"'
4363 enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4364
4365 if ! disabled_any asm mmx yasm; then
4366 if check_cmd $yasmexe --version; then
4367 enabled x86_64 && yasm_extra="-m amd64"
4368 yasm_debug="-g dwarf2"
4369 elif check_cmd nasm -v; then
4370 yasmexe=nasm
4371 yasm_debug="-g -F dwarf"
4372 enabled x86_64 && test "$objformat" = elf && objformat=elf64
4373 fi
4374
4375 YASMFLAGS="-f $objformat $yasm_extra"
4376 enabled pic && append YASMFLAGS "-DPIC"
4377 test -n "$extern_prefix" && append YASMFLAGS "-DPREFIX"
4378 case "$objformat" in