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1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105
106 Program options:
107   --disable-programs       do not build command line programs
108   --disable-avconv         disable avconv build
109   --disable-avplay         disable avplay build
110   --disable-avprobe        disable avprobe build
111   --disable-avserver       disable avserver build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-avdevice       disable libavdevice build
116   --disable-avcodec        disable libavcodec build
117   --disable-avformat       disable libavformat build
118   --disable-avutil         disable libavutil build
119   --disable-swscale        disable libswscale build
120   --disable-avfilter       disable video filter support [no]
121   --disable-avresample     disable libavresample build [no]
122   --disable-pthreads       disable pthreads [auto]
123   --disable-w32threads     disable Win32 threads [auto]
124   --disable-network        disable network support [no]
125   --disable-dct            disable DCT code
126   --disable-error-resilience disable error resilience code
127   --disable-lsp            disable LSP code
128   --disable-lzo            disable LZO decoder code
129   --disable-mdct           disable MDCT code
130   --disable-rdft           disable RDFT code
131   --disable-fft            disable FFT code
132
133 Hardware accelerators:
134   --enable-dxva2           enable DXVA2 code
135   --enable-vaapi           enable VAAPI code
136   --enable-vda             enable VDA code
137   --enable-vdpau           enable VDPAU code
138
139 Individual component options:
140   --disable-everything     disable all components listed below
141   --disable-encoder=NAME   disable encoder NAME
142   --enable-encoder=NAME    enable encoder NAME
143   --disable-encoders       disable all encoders
144   --disable-decoder=NAME   disable decoder NAME
145   --enable-decoder=NAME    enable decoder NAME
146   --disable-decoders       disable all decoders
147   --disable-hwaccel=NAME   disable hwaccel NAME
148   --enable-hwaccel=NAME    enable hwaccel NAME
149   --disable-hwaccels       disable all hwaccels
150   --disable-muxer=NAME     disable muxer NAME
151   --enable-muxer=NAME      enable muxer NAME
152   --disable-muxers         disable all muxers
153   --disable-demuxer=NAME   disable demuxer NAME
154   --enable-demuxer=NAME    enable demuxer NAME
155   --disable-demuxers       disable all demuxers
156   --enable-parser=NAME     enable parser NAME
157   --disable-parser=NAME    disable parser NAME
158   --disable-parsers        disable all parsers
159   --enable-bsf=NAME        enable bitstream filter NAME
160   --disable-bsf=NAME       disable bitstream filter NAME
161   --disable-bsfs           disable all bitstream filters
162   --enable-protocol=NAME   enable protocol NAME
163   --disable-protocol=NAME  disable protocol NAME
164   --disable-protocols      disable all protocols
165   --enable-indev=NAME      enable input device NAME
166   --disable-indev=NAME     disable input device NAME
167   --disable-indevs         disable input devices
168   --enable-outdev=NAME     enable output device NAME
169   --disable-outdev=NAME    disable output device NAME
170   --disable-outdevs        disable output devices
171   --disable-devices        disable all devices
172   --enable-filter=NAME     enable filter NAME
173   --disable-filter=NAME    disable filter NAME
174   --disable-filters        disable all filters
175
176 External library support:
177   --enable-avisynth        enable reading of AviSynth script files [no]
178   --enable-bzlib           enable bzlib [autodetect]
179   --enable-frei0r          enable frei0r video filtering
180   --enable-gnutls          enable gnutls [no]
181   --enable-libbs2b         enable bs2b DSP library [no]
182   --enable-libcdio         enable audio CD grabbing with libcdio
183   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
184                            and libraw1394 [no]
185   --enable-libfaac         enable AAC encoding via libfaac [no]
186   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
187   --enable-libfreetype     enable libfreetype [no]
188   --enable-libgsm          enable GSM de/encoding via libgsm [no]
189   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
190   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
191   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
192   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
193   --enable-libopencv       enable video filtering via libopencv [no]
194   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
195   --enable-libopus         enable Opus de/encoding via libopus [no]
196   --enable-libpulse        enable Pulseaudio input via libpulse [no]
197   --enable-librtmp         enable RTMP[E] support via librtmp [no]
198   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
199   --enable-libspeex        enable Speex de/encoding via libspeex [no]
200   --enable-libtheora       enable Theora encoding via libtheora [no]
201   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
202   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
203   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
204   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
205   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
206   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
207   --enable-libwebp         enable WebP encoding via libwebp [no]
208   --enable-libx264         enable H.264 encoding via x264 [no]
209   --enable-libx265         enable HEVC encoding via x265 [no]
210   --enable-libxavs         enable AVS encoding via xavs [no]
211   --enable-libxvid         enable Xvid encoding via xvidcore,
212                            native MPEG-4/Xvid encoder exists [no]
213   --enable-openssl         enable openssl [no]
214   --enable-x11grab         enable X11 grabbing [no]
215   --enable-zlib            enable zlib [autodetect]
216
217 Toolchain options:
218   --arch=ARCH              select architecture [$arch]
219   --cpu=CPU                select the minimum required CPU (affects
220                            instruction selection, may crash on older CPUs)
221   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
222   --enable-cross-compile   assume a cross-compiler is used
223   --sysroot=PATH           root of cross-build tree
224   --sysinclude=PATH        location of cross-build system headers
225   --target-os=OS           compiler targets OS [$target_os]
226   --target-exec=CMD        command to run executables on target
227   --target-path=DIR        path to view of build directory on target
228   --target-samples=DIR     path to samples directory on target
229   --toolchain=NAME         set tool defaults according to NAME
230   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
231   --nm=NM                  use nm tool
232   --ar=AR                  use archive tool AR [$ar_default]
233   --as=AS                  use assembler AS [$as_default]
234   --cc=CC                  use C compiler CC [$cc_default]
235   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
236   --ld=LD                  use linker LD
237   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
238   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
239   --host-cc=HOSTCC         use host C compiler HOSTCC
240   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
241   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
242   --host-ld=HOSTLD         use host linker HOSTLD
243   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
244   --host-libs=HLIBS        use libs HLIBS when linking for host
245   --host-os=OS             compiler host OS [$target_os]
246   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
247   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
248   --extra-libs=ELIBS       add ELIBS [$ELIBS]
249   --extra-version=STRING   version string suffix []
250   --optflags=OPTFLAGS      override optimization-related compiler flags
251   --build-suffix=SUFFIX    library name suffix []
252   --enable-pic             build position-independent code
253   --enable-thumb           compile for Thumb instruction set
254   --enable-lto             use link-time optimization
255
256 Advanced options (experts only):
257   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
258   --disable-symver         disable symbol versioning
259   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
260   --disable-safe-bitstream-reader
261                            disable buffer boundary checking in bitreaders
262                            (faster, but may crash)
263   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
264   --enable-sram            allow use of on-chip SRAM
265
266 Optimization options (experts only):
267   --disable-asm            disable all assembler optimizations
268   --disable-altivec        disable AltiVec optimizations
269   --disable-amd3dnow       disable 3DNow! optimizations
270   --disable-amd3dnowext    disable 3DNow! extended optimizations
271   --disable-mmx            disable MMX optimizations
272   --disable-mmxext         disable MMXEXT optimizations
273   --disable-sse            disable SSE optimizations
274   --disable-sse2           disable SSE2 optimizations
275   --disable-sse3           disable SSE3 optimizations
276   --disable-ssse3          disable SSSE3 optimizations
277   --disable-sse4           disable SSE4 optimizations
278   --disable-sse42          disable SSE4.2 optimizations
279   --disable-avx            disable AVX optimizations
280   --disable-xop            disable XOP optimizations
281   --disable-fma3           disable FMA3 optimizations
282   --disable-fma4           disable FMA4 optimizations
283   --disable-avx2           disable AVX2 optimizations
284   --disable-armv5te        disable armv5te optimizations
285   --disable-armv6          disable armv6 optimizations
286   --disable-armv6t2        disable armv6t2 optimizations
287   --disable-vfp            disable VFP optimizations
288   --disable-neon           disable NEON optimizations
289   --disable-inline-asm     disable use of inline assembler
290   --disable-yasm           disable use of yasm assembler
291
292 Developer options (useful when working on Libav itself):
293   --disable-debug          disable debugging symbols
294   --enable-debug=LEVEL     set the debug level [$debuglevel]
295   --disable-optimizations  disable compiler optimizations
296   --enable-extra-warnings  enable more compiler warnings
297   --samples=PATH           location of test samples for FATE, if not set use
298                            \$LIBAV_SAMPLES at make invocation time.
299   --enable-neon-clobber-test check NEON registers for clobbering (should be
300                            used only for debugging purposes)
301   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
302                            should be used only for debugging purposes)
303   --enable-random          randomly enable/disable components
304   --disable-random
305   --enable-random=LIST     randomly enable/disable specific components or
306   --disable-random=LIST    component groups. LIST is a comma-separated list
307                            of NAME[:PROB] entries where NAME is a component
308                            (group) and PROB the probability associated with
309                            NAME (default 0.5).
310   --random-seed=VALUE      seed value for --enable/disable-random
311
312 NOTE: Object files are built at the place where configure is launched.
313 EOF
314   exit 0
315 }
316
317 quotes='""'
318
319 log(){
320     echo "$@" >> $logfile
321 }
322
323 log_file(){
324     log BEGIN $1
325     pr -n -t $1 >> $logfile
326     log END $1
327 }
328
329 echolog(){
330     log "$@"
331     echo "$@"
332 }
333
334 warn(){
335     log "WARNING: $*"
336     WARNINGS="${WARNINGS}WARNING: $*\n"
337 }
338
339 die(){
340     echolog "$@"
341     cat <<EOF
342
343 If you think configure made a mistake, make sure you are using the latest
344 version from Git.  If the latest version fails, report the problem to the
345 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
346 EOF
347     if disabled logging; then
348         cat <<EOF
349 Rerun configure with logging enabled (do not use --disable-logging), and
350 include the log this produces with your report.
351 EOF
352     else
353         cat <<EOF
354 Include the log file "$logfile" produced by configure as this will help
355 solving the problem.
356 EOF
357     fi
358     exit 1
359 }
360
361 # Avoid locale weirdness, besides we really just want to translate ASCII.
362 toupper(){
363     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
364 }
365
366 tolower(){
367     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
368 }
369
370 c_escape(){
371     echo "$*" | sed 's/["\\]/\\\0/g'
372 }
373
374 sh_quote(){
375     v=$(echo "$1" | sed "s/'/'\\\\''/g")
376     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
377     echo "$v"
378 }
379
380 cleanws(){
381     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
382 }
383
384 filter(){
385     pat=$1
386     shift
387     for v; do
388         eval "case $v in $pat) echo $v ;; esac"
389     done
390 }
391
392 filter_out(){
393     pat=$1
394     shift
395     for v; do
396         eval "case $v in $pat) ;; *) echo $v ;; esac"
397     done
398 }
399
400 map(){
401     m=$1
402     shift
403     for v; do eval $m; done
404 }
405
406 add_suffix(){
407     suffix=$1
408     shift
409     for v; do echo ${v}${suffix}; done
410 }
411
412 set_all(){
413     value=$1
414     shift
415     for var in $*; do
416         eval $var=$value
417     done
418 }
419
420 set_weak(){
421     value=$1
422     shift
423     for var; do
424         eval : \${$var:=$value}
425     done
426 }
427
428 sanitize_var_name(){
429     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
430 }
431
432 set_safe(){
433     var=$1
434     shift
435     eval $(sanitize_var_name "$var")='$*'
436 }
437
438 get_safe(){
439     eval echo \$$(sanitize_var_name "$1")
440 }
441
442 pushvar(){
443     for pvar in $*; do
444         eval level=\${${pvar}_level:=0}
445         eval ${pvar}_${level}="\$$pvar"
446         eval ${pvar}_level=$(($level+1))
447     done
448 }
449
450 popvar(){
451     for pvar in $*; do
452         eval level=\${${pvar}_level:-0}
453         test $level = 0 && continue
454         eval level=$(($level-1))
455         eval $pvar="\${${pvar}_${level}}"
456         eval ${pvar}_level=$level
457         eval unset ${pvar}_${level}
458     done
459 }
460
461 enable(){
462     set_all yes $*
463 }
464
465 disable(){
466     set_all no $*
467 }
468
469 enable_weak(){
470     set_weak yes $*
471 }
472
473 disable_weak(){
474     set_weak no $*
475 }
476
477 enable_safe(){
478     for var; do
479         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
480     done
481 }
482
483 disable_safe(){
484     for var; do
485         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
486     done
487 }
488
489 do_enable_deep(){
490     for var; do
491         enabled $var && continue
492         eval sel="\$${var}_select"
493         eval sgs="\$${var}_suggest"
494         pushvar var sgs
495         enable_deep $sel
496         popvar sgs
497         enable_deep_weak $sgs
498         popvar var
499     done
500 }
501
502 enable_deep(){
503     do_enable_deep $*
504     enable $*
505 }
506
507 enable_deep_weak(){
508     for var; do
509         disabled $var && continue
510         pushvar var
511         do_enable_deep $var
512         popvar var
513         enable_weak $var
514     done
515 }
516
517 enabled(){
518     test "${1#!}" = "$1" && op== || op=!=
519     eval test "x\$${1#!}" $op "xyes"
520 }
521
522 disabled(){
523     test "${1#!}" = "$1" && op== || op=!=
524     eval test "x\$${1#!}" $op "xno"
525 }
526
527 enabled_all(){
528     for opt; do
529         enabled $opt || return 1
530     done
531 }
532
533 disabled_all(){
534     for opt; do
535         disabled $opt || return 1
536     done
537 }
538
539 enabled_any(){
540     for opt; do
541         enabled $opt && return 0
542     done
543 }
544
545 disabled_any(){
546     for opt; do
547         disabled $opt && return 0
548     done
549     return 1
550 }
551
552 set_default(){
553     for opt; do
554         eval : \${$opt:=\$${opt}_default}
555     done
556 }
557
558 is_in(){
559     value=$1
560     shift
561     for var in $*; do
562         [ $var = $value ] && return 0
563     done
564     return 1
565 }
566
567 do_check_deps(){
568     for cfg; do
569         cfg="${cfg#!}"
570         enabled ${cfg}_checking && die "Circular dependency for $cfg."
571         disabled ${cfg}_checking && continue
572         enable ${cfg}_checking
573         append allopts $cfg
574
575         eval dep_all="\$${cfg}_deps"
576         eval dep_any="\$${cfg}_deps_any"
577         eval dep_sel="\$${cfg}_select"
578         eval dep_sgs="\$${cfg}_suggest"
579         eval dep_ifa="\$${cfg}_if"
580         eval dep_ifn="\$${cfg}_if_any"
581
582         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
583         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
584         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
585
586         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
587         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
588         enabled_all  $dep_all || disable $cfg
589         enabled_any  $dep_any || disable $cfg
590         disabled_any $dep_sel && disable $cfg
591
592         if enabled $cfg; then
593             enable_deep $dep_sel
594             enable_deep_weak $dep_sgs
595         fi
596
597         disable ${cfg}_checking
598     done
599 }
600
601 check_deps(){
602     unset allopts
603
604     do_check_deps "$@"
605
606     for cfg in $allopts; do
607         enabled $cfg || continue
608         eval dep_extralibs="\$${cfg}_extralibs"
609         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
610     done
611 }
612
613 print_config(){
614     pfx=$1
615     files=$2
616     shift 2
617     map 'eval echo "$v \${$v:-no}"' "$@" |
618     awk "BEGIN { split(\"$files\", files) }
619         {
620             c = \"$pfx\" toupper(\$1);
621             v = \$2;
622             sub(/yes/, 1, v);
623             sub(/no/,  0, v);
624             for (f in files) {
625                 file = files[f];
626                 if (file ~ /\\.h\$/) {
627                     printf(\"#define %s %d\\n\", c, v) >>file;
628                 } else if (file ~ /\\.asm\$/) {
629                     printf(\"%%define %s %d\\n\", c, v) >>file;
630                 } else if (file ~ /\\.mak\$/) {
631                     n = -v ? \"\" : \"!\";
632                     printf(\"%s%s=yes\\n\", n, c) >>file;
633                 }
634             }
635         }"
636 }
637
638 print_enabled(){
639     suf=$1
640     shift
641     for v; do
642         enabled $v && printf "%s\n" ${v%$suf};
643     done
644 }
645
646 append(){
647     var=$1
648     shift
649     eval "$var=\"\$$var $*\""
650 }
651
652 prepend(){
653     var=$1
654     shift
655     eval "$var=\"$* \$$var\""
656 }
657
658 unique(){
659     var=$1
660     uniq_list=""
661     for tok in $(eval echo \$$var); do
662         uniq_list="$(filter_out $tok $uniq_list) $tok"
663     done
664     eval "$var=\"${uniq_list}\""
665 }
666
667 add_cppflags(){
668     append CPPFLAGS "$@"
669 }
670
671 add_cflags(){
672     append CFLAGS $($cflags_filter "$@")
673 }
674
675 add_asflags(){
676     append ASFLAGS $($asflags_filter "$@")
677 }
678
679 add_ldflags(){
680     append LDFLAGS $($ldflags_filter "$@")
681 }
682
683 add_stripflags(){
684     append STRIPFLAGS "$@"
685 }
686
687 add_extralibs(){
688     prepend extralibs $($ldflags_filter "$@")
689 }
690
691 add_host_cppflags(){
692     append host_cppflags "$@"
693 }
694
695 add_host_cflags(){
696     append host_cflags $($host_cflags_filter "$@")
697 }
698
699 add_host_ldflags(){
700     append host_ldflags $($host_ldflags_filter "$@")
701 }
702
703 add_compat(){
704     append compat_objs $1
705     shift
706     map 'add_cppflags -D$v' "$@"
707 }
708
709 check_cmd(){
710     log "$@"
711     "$@" >> $logfile 2>&1
712 }
713
714 cc_o(){
715     eval printf '%s\\n' $CC_O
716 }
717
718 cc_e(){
719     eval printf '%s\\n' $CC_E
720 }
721
722 check_cc(){
723     log check_cc "$@"
724     cat > $TMPC
725     log_file $TMPC
726     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
727 }
728
729 check_cpp(){
730     log check_cpp "$@"
731     cat > $TMPC
732     log_file $TMPC
733     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
734 }
735
736 as_o(){
737     eval printf '%s\\n' $AS_O
738 }
739
740 check_as(){
741     log check_as "$@"
742     cat > $TMPS
743     log_file $TMPS
744     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
745 }
746
747 check_inline_asm(){
748     log check_inline_asm "$@"
749     name="$1"
750     code="$2"
751     shift 2
752     disable $name
753     check_cc "$@" <<EOF && enable $name
754 void foo(void){ __asm__ volatile($code); }
755 EOF
756 }
757
758 check_insn(){
759     log check_insn "$@"
760     check_inline_asm ${1}_inline "\"$2\""
761     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
762 }
763
764 check_yasm(){
765     log check_yasm "$@"
766     echo "$1" > $TMPS
767     log_file $TMPS
768     shift 1
769     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
770 }
771
772 ld_o(){
773     eval printf '%s\\n' $LD_O
774 }
775
776 check_ld(){
777     log check_ld "$@"
778     flags=$(filter_out '-l*' "$@")
779     libs=$(filter '-l*' "$@")
780     check_cc $($cflags_filter $flags) || return
781     flags=$($ldflags_filter $flags)
782     libs=$($ldflags_filter $libs)
783     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
784 }
785
786 print_include(){
787     hdr=$1
788     test "${hdr%.h}" = "${hdr}" &&
789         echo "#include $hdr"    ||
790         echo "#include <$hdr>"
791 }
792
793 check_code(){
794     log check_code "$@"
795     check=$1
796     headers=$2
797     code=$3
798     shift 3
799     {
800         for hdr in $headers; do
801             print_include $hdr
802         done
803         echo "int main(void) { $code; return 0; }"
804     } | check_$check "$@"
805 }
806
807 check_cppflags(){
808     log check_cppflags "$@"
809     check_cc "$@" <<EOF && append CPPFLAGS "$@"
810 int x;
811 EOF
812 }
813
814 test_cflags(){
815     log test_cflags "$@"
816     set -- $($cflags_filter "$@")
817     check_cc "$@" <<EOF
818 int x;
819 EOF
820 }
821
822 check_cflags(){
823     log check_cflags "$@"
824     test_cflags "$@" && add_cflags "$@"
825 }
826
827 test_ldflags(){
828     log test_ldflags "$@"
829     check_ld "$@" <<EOF
830 int main(void){ return 0; }
831 EOF
832 }
833
834 check_ldflags(){
835     log check_ldflags "$@"
836     test_ldflags "$@" && add_ldflags "$@"
837 }
838
839 test_stripflags(){
840     log test_stripflags "$@"
841     # call check_cc to get a fresh TMPO
842     check_cc <<EOF
843 int main(void) { return 0; }
844 EOF
845     check_cmd $strip $STRIPFLAGS "$@" $TMPO
846 }
847
848 check_stripflags(){
849     log check_stripflags "$@"
850     test_stripflags "$@" && add_stripflags "$@"
851 }
852
853 check_header(){
854     log check_header "$@"
855     header=$1
856     shift
857     disable_safe $header
858     check_cpp "$@" <<EOF && enable_safe $header
859 #include <$header>
860 int x;
861 EOF
862 }
863
864 check_func(){
865     log check_func "$@"
866     func=$1
867     shift
868     disable $func
869     check_ld "$@" <<EOF && enable $func
870 extern int $func();
871 int main(void){ $func(); }
872 EOF
873 }
874
875 check_mathfunc(){
876     log check_mathfunc "$@"
877     func=$1
878     narg=$2
879     shift 2
880     test $narg = 2 && args="f, g" || args="f"
881     disable $func
882     check_ld "$@" <<EOF && enable $func
883 #include <math.h>
884 float foo(float f, float g) { return $func($args); }
885 int main(void){ return 0; }
886 EOF
887 }
888
889 check_func_headers(){
890     log check_func_headers "$@"
891     headers=$1
892     funcs=$2
893     shift 2
894     {
895         for hdr in $headers; do
896             print_include $hdr
897         done
898         for func in $funcs; do
899             echo "long check_$func(void) { return (long) $func; }"
900         done
901         echo "int main(void) { return 0; }"
902     } | check_ld "$@" && enable $funcs && enable_safe $headers
903 }
904
905 check_cpp_condition(){
906     log check_cpp_condition "$@"
907     header=$1
908     condition=$2
909     shift 2
910     check_cpp "$@" <<EOF
911 #include <$header>
912 #if !($condition)
913 #error "unsatisfied condition: $condition"
914 #endif
915 EOF
916 }
917
918 check_lib(){
919     log check_lib "$@"
920     header="$1"
921     func="$2"
922     shift 2
923     check_header $header && check_func $func "$@" && add_extralibs "$@"
924 }
925
926 check_lib2(){
927     log check_lib2 "$@"
928     headers="$1"
929     funcs="$2"
930     shift 2
931     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
932 }
933
934 check_pkg_config(){
935     log check_pkg_config "$@"
936     pkg="$1"
937     headers="$2"
938     funcs="$3"
939     shift 3
940     check_cmd $pkg_config --exists --print-errors $pkg || return
941     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
942     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
943     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
944         set_safe ${pkg}_cflags $pkg_cflags   &&
945         set_safe ${pkg}_libs   $pkg_libs
946 }
947
948 check_exec(){
949     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
950 }
951
952 check_exec_crash(){
953     code=$(cat)
954
955     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
956     # are safe but may not be available everywhere.  Thus we use
957     # raise(SIGTERM) instead.  The check is run in a subshell so we
958     # can redirect the "Terminated" message from the shell.  SIGBUS
959     # is not defined by standard C so it is used conditionally.
960
961     (check_exec "$@") >> $logfile 2>&1 <<EOF
962 #include <signal.h>
963 static void sighandler(int sig){
964     raise(SIGTERM);
965 }
966 int foo(void){
967     $code
968 }
969 int (*func_ptr)(void) = foo;
970 int main(void){
971     signal(SIGILL, sighandler);
972     signal(SIGFPE, sighandler);
973     signal(SIGSEGV, sighandler);
974 #ifdef SIGBUS
975     signal(SIGBUS, sighandler);
976 #endif
977     return func_ptr();
978 }
979 EOF
980 }
981
982 check_type(){
983     log check_type "$@"
984     headers=$1
985     type=$2
986     shift 2
987     disable_safe "$type"
988     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
989 }
990
991 check_struct(){
992     log check_struct "$@"
993     headers=$1
994     struct=$2
995     member=$3
996     shift 3
997     disable_safe "${struct}_${member}"
998     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
999         enable_safe "${struct}_${member}"
1000 }
1001
1002 check_builtin(){
1003     log check_builtin "$@"
1004     name=$1
1005     headers=$2
1006     builtin=$3
1007     shift 3
1008     disable "$name"
1009     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1010 }
1011
1012 check_compile_assert(){
1013     log check_compile_assert "$@"
1014     name=$1
1015     headers=$2
1016     condition=$3
1017     shift 3
1018     disable "$name"
1019     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1020 }
1021
1022 require(){
1023     name="$1"
1024     header="$2"
1025     func="$3"
1026     shift 3
1027     check_lib $header $func "$@" || die "ERROR: $name not found"
1028 }
1029
1030 require2(){
1031     name="$1"
1032     headers="$2"
1033     func="$3"
1034     shift 3
1035     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1036 }
1037
1038 require_pkg_config(){
1039     pkg="$1"
1040     check_pkg_config "$@" || die "ERROR: $pkg not found"
1041     add_cflags    $(get_safe ${pkg}_cflags)
1042     add_extralibs $(get_safe ${pkg}_libs)
1043 }
1044
1045 hostcc_e(){
1046     eval printf '%s\\n' $HOSTCC_E
1047 }
1048
1049 hostcc_o(){
1050     eval printf '%s\\n' $HOSTCC_O
1051 }
1052
1053 check_host_cc(){
1054     log check_host_cc "$@"
1055     cat > $TMPC
1056     log_file $TMPC
1057     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1058 }
1059
1060 check_host_cpp(){
1061     log check_host_cpp "$@"
1062     cat > $TMPC
1063     log_file $TMPC
1064     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1065 }
1066
1067 check_host_cppflags(){
1068     log check_host_cppflags "$@"
1069     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1070 int x;
1071 EOF
1072 }
1073
1074 check_host_cflags(){
1075     log check_host_cflags "$@"
1076     set -- $($host_cflags_filter "$@")
1077     check_host_cc "$@" <<EOF && append host_cflags "$@"
1078 int x;
1079 EOF
1080 }
1081
1082 check_host_cpp_condition(){
1083     log check_host_cpp_condition "$@"
1084     header=$1
1085     condition=$2
1086     shift 2
1087     check_host_cpp "$@" <<EOF
1088 #include <$header>
1089 #if !($condition)
1090 #error "unsatisfied condition: $condition"
1091 #endif
1092 EOF
1093 }
1094
1095 apply(){
1096     file=$1
1097     shift
1098     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1099 }
1100
1101 cp_if_changed(){
1102     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1103     mkdir -p "$(dirname $2)"
1104     $cp_f "$1" "$2"
1105 }
1106
1107 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1108 # system-dependent things.
1109
1110 COMPONENT_LIST="
1111     bsfs
1112     decoders
1113     demuxers
1114     encoders
1115     filters
1116     hwaccels
1117     indevs
1118     muxers
1119     outdevs
1120     parsers
1121     protocols
1122 "
1123
1124 EXAMPLE_LIST="
1125     avcodec_example
1126     filter_audio_example
1127     metadata_example
1128     output_example
1129     transcode_aac_example
1130 "
1131
1132 EXTERNAL_LIBRARY_LIST="
1133     avisynth
1134     bzlib
1135     frei0r
1136     gnutls
1137     libbs2b
1138     libcdio
1139     libdc1394
1140     libfaac
1141     libfdk_aac
1142     libfontconfig
1143     libfreetype
1144     libgsm
1145     libilbc
1146     libmp3lame
1147     libopencore_amrnb
1148     libopencore_amrwb
1149     libopencv
1150     libopenjpeg
1151     libopus
1152     libpulse
1153     librtmp
1154     libschroedinger
1155     libspeex
1156     libtheora
1157     libtwolame
1158     libvo_aacenc
1159     libvo_amrwbenc
1160     libvorbis
1161     libvpx
1162     libwavpack
1163     libwebp
1164     libx264
1165     libx265
1166     libxavs
1167     libxvid
1168     openssl
1169     x11grab
1170     zlib
1171 "
1172
1173 FEATURE_LIST="
1174     gray
1175     hardcoded_tables
1176     runtime_cpudetect
1177     safe_bitstream_reader
1178     shared
1179     small
1180     sram
1181     static
1182     swscale_alpha
1183 "
1184
1185 HWACCEL_LIST="
1186     dxva2
1187     vaapi
1188     vda
1189     vdpau
1190 "
1191
1192 LIBRARY_LIST="
1193     avcodec
1194     avdevice
1195     avfilter
1196     avformat
1197     avresample
1198     avutil
1199     swscale
1200 "
1201
1202 LICENSE_LIST="
1203     gpl
1204     nonfree
1205     version3
1206 "
1207
1208 PROGRAM_LIST="
1209     avconv
1210     avplay
1211     avprobe
1212     avserver
1213 "
1214
1215 SUBSYSTEM_LIST="
1216     dct
1217     doc
1218     error_resilience
1219     fft
1220     lsp
1221     lzo
1222     mdct
1223     network
1224     rdft
1225 "
1226
1227 CONFIG_LIST="
1228     $COMPONENT_LIST
1229     $EXAMPLE_LIST
1230     $EXTERNAL_LIBRARY_LIST
1231     $FEATURE_LIST
1232     $HWACCEL_LIST
1233     $LICENSE_LIST
1234     $LIBRARY_LIST
1235     $PROGRAM_LIST
1236     $SUBSYSTEM_LIST
1237     memalign_hack
1238     neon_clobber_test
1239     pic
1240     pod2man
1241     texi2html
1242     thumb
1243     xmm_clobber_test
1244 "
1245
1246 THREADS_LIST="
1247     pthreads
1248     w32threads
1249 "
1250
1251 ATOMICS_LIST="
1252     atomics_gcc
1253     atomics_suncc
1254     atomics_win32
1255 "
1256
1257 ARCH_LIST="
1258     aarch64
1259     alpha
1260     arm
1261     avr32
1262     avr32_ap
1263     avr32_uc
1264     bfin
1265     ia64
1266     m68k
1267     mips
1268     mips64
1269     parisc
1270     ppc
1271     ppc64
1272     s390
1273     sh4
1274     sparc
1275     sparc64
1276     tilegx
1277     tilepro
1278     tomi
1279     x86
1280     x86_32
1281     x86_64
1282 "
1283
1284 ARCH_EXT_LIST_ARM="
1285     armv5te
1286     armv6
1287     armv6t2
1288     armv8
1289     neon
1290     vfp
1291     vfpv3
1292 "
1293
1294 ARCH_EXT_LIST_X86_SIMD="
1295     amd3dnow
1296     amd3dnowext
1297     avx
1298     avx2
1299     fma3
1300     fma4
1301     mmx
1302     mmxext
1303     sse
1304     sse2
1305     sse3
1306     sse4
1307     sse42
1308     ssse3
1309     xop
1310 "
1311
1312 ARCH_EXT_LIST_PPC="
1313     altivec
1314     dcbzl
1315     ldbrx
1316     ppc4xx
1317 "
1318
1319 ARCH_EXT_LIST_X86="
1320     $ARCH_EXT_LIST_X86_SIMD
1321     cpunop
1322     i686
1323 "
1324
1325 ARCH_EXT_LIST="
1326     $ARCH_EXT_LIST_ARM
1327     $ARCH_EXT_LIST_PPC
1328     $ARCH_EXT_LIST_X86
1329     loongson
1330     vis
1331 "
1332
1333 ARCH_FEATURES="
1334     aligned_stack
1335     fast_64bit
1336     fast_clz
1337     fast_cmov
1338     local_aligned_8
1339     local_aligned_16
1340 "
1341
1342 BUILTIN_LIST="
1343     atomic_cas_ptr
1344     machine_rw_barrier
1345     MemoryBarrier
1346     mm_empty
1347     rdtsc
1348     sync_val_compare_and_swap
1349 "
1350 HAVE_LIST_CMDLINE="
1351     inline_asm
1352     symver
1353     yasm
1354 "
1355
1356 HAVE_LIST_PUB="
1357     bigendian
1358     fast_unaligned
1359 "
1360
1361 HEADERS_LIST="
1362     alsa_asoundlib_h
1363     altivec_h
1364     arpa_inet_h
1365     cdio_paranoia_h
1366     cdio_paranoia_paranoia_h
1367     dev_bktr_ioctl_bt848_h
1368     dev_bktr_ioctl_meteor_h
1369     dev_ic_bt8xx_h
1370     dev_video_bktr_ioctl_bt848_h
1371     dev_video_meteor_ioctl_meteor_h
1372     direct_h
1373     dlfcn_h
1374     dxva_h
1375     gsm_h
1376     io_h
1377     mach_mach_time_h
1378     machine_ioctl_bt848_h
1379     machine_ioctl_meteor_h
1380     malloc_h
1381     poll_h
1382     sndio_h
1383     soundcard_h
1384     sys_mman_h
1385     sys_param_h
1386     sys_resource_h
1387     sys_select_h
1388     sys_soundcard_h
1389     sys_time_h
1390     sys_un_h
1391     sys_videoio_h
1392     unistd_h
1393     windows_h
1394     winsock2_h
1395 "
1396
1397 MATH_FUNCS="
1398     atanf
1399     atan2f
1400     cbrtf
1401     cosf
1402     exp2
1403     exp2f
1404     expf
1405     isinf
1406     isnan
1407     ldexpf
1408     llrint
1409     llrintf
1410     log2
1411     log2f
1412     log10f
1413     lrint
1414     lrintf
1415     powf
1416     rint
1417     round
1418     roundf
1419     sinf
1420     trunc
1421     truncf
1422 "
1423
1424 SYSTEM_FUNCS="
1425     aligned_malloc
1426     closesocket
1427     CommandLineToArgvW
1428     CoTaskMemFree
1429     CryptGenRandom
1430     dlopen
1431     fcntl
1432     flt_lim
1433     fork
1434     getaddrinfo
1435     gethrtime
1436     getopt
1437     GetProcessAffinityMask
1438     GetProcessMemoryInfo
1439     GetProcessTimes
1440     getrusage
1441     getservbyport
1442     GetSystemTimeAsFileTime
1443     gettimeofday
1444     inet_aton
1445     isatty
1446     jack_port_get_latency_range
1447     localtime_r
1448     mach_absolute_time
1449     MapViewOfFile
1450     memalign
1451     mkstemp
1452     mmap
1453     mprotect
1454     nanosleep
1455     posix_memalign
1456     sched_getaffinity
1457     SetConsoleTextAttribute
1458     setmode
1459     setrlimit
1460     Sleep
1461     strerror_r
1462     strptime
1463     sysconf
1464     sysctl
1465     usleep
1466     VirtualAlloc
1467 "
1468
1469 TOOLCHAIN_FEATURES="
1470     as_dn_directive
1471     asm_mod_q
1472     attribute_may_alias
1473     attribute_packed
1474     ebp_available
1475     ebx_available
1476     gnu_as
1477     ibm_asm
1478     inline_asm_labels
1479     pragma_deprecated
1480     symver_asm_label
1481     symver_gnu_asm
1482     vfp_args
1483     xform_asm
1484     xmm_clobbers
1485 "
1486
1487 TYPES_LIST="
1488     socklen_t
1489     struct_addrinfo
1490     struct_group_source_req
1491     struct_ip_mreq_source
1492     struct_ipv6_mreq
1493     struct_pollfd
1494     struct_rusage_ru_maxrss
1495     struct_sockaddr_in6
1496     struct_sockaddr_sa_len
1497     struct_sockaddr_storage
1498     struct_v4l2_frmivalenum_discrete
1499 "
1500
1501 HAVE_LIST="
1502     $ARCH_EXT_LIST
1503     $(add_suffix _external $ARCH_EXT_LIST)
1504     $(add_suffix _inline   $ARCH_EXT_LIST)
1505     $ARCH_FEATURES
1506     $ATOMICS_LIST
1507     $BUILTIN_LIST
1508     $HAVE_LIST_CMDLINE
1509     $HAVE_LIST_PUB
1510     $HEADERS_LIST
1511     $MATH_FUNCS
1512     $SYSTEM_FUNCS
1513     $THREADS_LIST
1514     $TOOLCHAIN_FEATURES
1515     $TYPES_LIST
1516     atomics_native
1517     dos_paths
1518     dxva2_lib
1519     libc_msvcrt
1520     libdc1394_1
1521     libdc1394_2
1522     sdl
1523     threads
1524     vdpau_x11
1525     xlib
1526 "
1527
1528 # options emitted with CONFIG_ prefix but not available on the command line
1529 CONFIG_EXTRA="
1530     aandcttables
1531     ac3dsp
1532     audio_frame_queue
1533     cabac
1534     dsputil
1535     gcrypt
1536     golomb
1537     gplv3
1538     h263dsp
1539     h264chroma
1540     h264dsp
1541     h264pred
1542     h264qpel
1543     hpeldsp
1544     huffman
1545     huffyuvdsp
1546     huffyuvencdsp
1547     intrax8
1548     lgplv3
1549     lpc
1550     mpegaudio
1551     mpegaudiodsp
1552     mpegvideo
1553     mpegvideoenc
1554     nettle
1555     qpeldsp
1556     rangecoder
1557     riffdec
1558     riffenc
1559     rtpdec
1560     rtpenc_chain
1561     sinewin
1562     tpeldsp
1563     videodsp
1564     vp3dsp
1565 "
1566
1567 CMDLINE_SELECT="
1568     $ARCH_EXT_LIST
1569     $CONFIG_LIST
1570     $HAVE_LIST_CMDLINE
1571     $THREADS_LIST
1572     asm
1573     cross_compile
1574     debug
1575     extra_warnings
1576     logging
1577     lto
1578     optimizations
1579 "
1580
1581 PATHS_LIST="
1582     bindir
1583     datadir
1584     docdir
1585     incdir
1586     libdir
1587     mandir
1588     prefix
1589     shlibdir
1590 "
1591
1592 CMDLINE_SET="
1593     $PATHS_LIST
1594     ar
1595     arch
1596     as
1597     build_suffix
1598     cc
1599     cpu
1600     cross_prefix
1601     dep_cc
1602     extra_version
1603     host_cc
1604     host_cflags
1605     host_ld
1606     host_ldflags
1607     host_libs
1608     host_os
1609     ld
1610     logfile
1611     malloc_prefix
1612     nm
1613     optflags
1614     pkg_config
1615     pkg_config_flags
1616     random_seed
1617     samples
1618     sysinclude
1619     sysroot
1620     target_exec
1621     target_os
1622     target_path
1623     target_samples
1624     toolchain
1625 "
1626
1627 CMDLINE_APPEND="
1628     extra_cflags
1629     host_cppflags
1630 "
1631
1632 # code dependency declarations
1633
1634 # architecture extensions
1635
1636 armv5te_deps="arm"
1637 armv6_deps="arm"
1638 armv6t2_deps="arm"
1639 armv8_deps="aarch64"
1640 neon_deps_any="aarch64 arm"
1641 vfp_deps_any="aarch64 arm"
1642 vfpv3_deps="vfp"
1643
1644 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1645
1646 altivec_deps="ppc"
1647 ppc4xx_deps="ppc"
1648
1649 cpunop_deps="i686"
1650 x86_64_select="i686"
1651 x86_64_suggest="fast_cmov"
1652
1653 amd3dnow_deps="mmx"
1654 amd3dnowext_deps="amd3dnow"
1655 i686_deps="x86"
1656 mmx_deps="x86"
1657 mmxext_deps="mmx"
1658 sse_deps="mmxext"
1659 sse2_deps="sse"
1660 sse3_deps="sse2"
1661 ssse3_deps="sse3"
1662 sse4_deps="ssse3"
1663 sse42_deps="sse4"
1664 avx_deps="sse42"
1665 xop_deps="avx"
1666 fma3_deps="avx"
1667 fma4_deps="avx"
1668 avx2_deps="avx"
1669
1670 mmx_external_deps="yasm"
1671 mmx_inline_deps="inline_asm"
1672 mmx_suggest="mmx_external mmx_inline"
1673
1674 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1675     eval dep=\$${ext}_deps
1676     eval ${ext}_external_deps='"${dep}_external"'
1677     eval ${ext}_inline_deps='"${dep}_inline"'
1678     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1679 done
1680
1681 aligned_stack_if_any="aarch64 ppc x86"
1682 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1683 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1684 fast_unaligned_if_any="aarch64 ppc x86"
1685
1686 need_memalign="altivec neon sse"
1687
1688 # system capabilities
1689 log2_deps="!libc_msvcrt"
1690
1691 symver_if_any="symver_asm_label symver_gnu_asm"
1692
1693 # threading support
1694 atomics_gcc_if="sync_val_compare_and_swap"
1695 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1696 atomics_win32_if="MemoryBarrier"
1697 atomics_native_if_any="$ATOMICS_LIST"
1698 w32threads_deps="atomics_native"
1699 threads_if_any="$THREADS_LIST"
1700
1701 # subsystems
1702 dct_select="rdft"
1703 error_resilience_select="dsputil"
1704 mdct_select="fft"
1705 rdft_select="fft"
1706 mpegaudio_select="mpegaudiodsp"
1707 mpegaudiodsp_select="dct"
1708 mpegvideo_select="dsputil hpeldsp videodsp"
1709 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
1710
1711 # decoders / encoders
1712 aac_decoder_select="mdct sinewin"
1713 aac_encoder_select="audio_frame_queue mdct sinewin"
1714 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1715 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1716 ac3_encoder_select="mdct ac3dsp dsputil"
1717 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1718 aic_decoder_select="dsputil golomb"
1719 alac_encoder_select="lpc"
1720 als_decoder_select="dsputil"
1721 amrnb_decoder_select="lsp"
1722 amrwb_decoder_select="lsp"
1723 amv_decoder_select="sp5x_decoder"
1724 ape_decoder_select="dsputil"
1725 asv1_decoder_select="dsputil"
1726 asv1_encoder_select="dsputil"
1727 asv2_decoder_select="dsputil"
1728 asv2_encoder_select="dsputil"
1729 atrac1_decoder_select="mdct sinewin"
1730 atrac3_decoder_select="mdct"
1731 atrac3p_decoder_select="mdct sinewin"
1732 bink_decoder_select="dsputil hpeldsp"
1733 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1734 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1735 cavs_decoder_select="dsputil golomb h264chroma qpeldsp videodsp"
1736 cllc_decoder_select="dsputil"
1737 comfortnoise_encoder_select="lpc"
1738 cook_decoder_select="dsputil mdct sinewin"
1739 cscd_decoder_select="lzo"
1740 cscd_decoder_suggest="zlib"
1741 dca_decoder_select="mdct"
1742 dnxhd_decoder_select="dsputil"
1743 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1744 dvvideo_decoder_select="dsputil"
1745 dvvideo_encoder_select="dsputil"
1746 dxa_decoder_deps="zlib"
1747 eac3_decoder_select="ac3_decoder"
1748 eac3_encoder_select="ac3_encoder"
1749 eamad_decoder_select="aandcttables dsputil mpegvideo"
1750 eatgq_decoder_select="aandcttables dsputil"
1751 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
1752 exr_decoder_deps="zlib"
1753 ffv1_decoder_select="golomb rangecoder"
1754 ffv1_encoder_select="rangecoder"
1755 ffvhuff_decoder_select="huffyuv_decoder"
1756 ffvhuff_encoder_select="huffyuv_encoder"
1757 fic_decoder_select="golomb"
1758 flac_decoder_select="golomb"
1759 flac_encoder_select="dsputil golomb lpc"
1760 flashsv_decoder_deps="zlib"
1761 flashsv_encoder_deps="zlib"
1762 flashsv2_decoder_deps="zlib"
1763 flv_decoder_select="h263_decoder"
1764 flv_encoder_select="h263_encoder"
1765 fourxm_decoder_select="dsputil"
1766 fraps_decoder_select="dsputil huffman"
1767 g2m_decoder_deps="zlib"
1768 g2m_decoder_select="dsputil"
1769 h261_decoder_select="error_resilience mpegvideo"
1770 h261_encoder_select="aandcttables mpegvideoenc"
1771 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo qpeldsp"
1772 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1773 h263i_decoder_select="h263_decoder"
1774 h263p_encoder_select="h263_encoder"
1775 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1776 h264_decoder_suggest="error_resilience"
1777 hevc_decoder_select="cabac dsputil golomb videodsp"
1778 huffyuv_decoder_select="dsputil huffyuvdsp"
1779 huffyuv_encoder_select="dsputil huffman huffyuvencdsp"
1780 iac_decoder_select="imc_decoder"
1781 imc_decoder_select="dsputil fft mdct sinewin"
1782 indeo3_decoder_select="hpeldsp"
1783 interplay_video_decoder_select="hpeldsp"
1784 jpegls_decoder_select="golomb mjpeg_decoder"
1785 jpegls_encoder_select="golomb"
1786 jv_decoder_select="dsputil"
1787 lagarith_decoder_select="huffyuvdsp"
1788 ljpeg_encoder_select="aandcttables mpegvideoenc"
1789 loco_decoder_select="golomb"
1790 mdec_decoder_select="dsputil error_resilience mpegvideo"
1791 metasound_decoder_select="lsp mdct sinewin"
1792 mimic_decoder_select="dsputil hpeldsp"
1793 mjpeg_decoder_select="dsputil hpeldsp"
1794 mjpeg_encoder_select="aandcttables mpegvideoenc"
1795 mjpegb_decoder_select="mjpeg_decoder"
1796 mlp_decoder_select="mlp_parser"
1797 motionpixels_decoder_select="dsputil"
1798 mp1_decoder_select="mpegaudio"
1799 mp1float_decoder_select="mpegaudio"
1800 mp2_decoder_select="mpegaudio"
1801 mp2float_decoder_select="mpegaudio"
1802 mp3_decoder_select="mpegaudio"
1803 mp3adu_decoder_select="mpegaudio"
1804 mp3adufloat_decoder_select="mpegaudio"
1805 mp3float_decoder_select="mpegaudio"
1806 mp3on4_decoder_select="mpegaudio"
1807 mp3on4float_decoder_select="mpegaudio"
1808 mpc7_decoder_select="dsputil mpegaudiodsp"
1809 mpc8_decoder_select="mpegaudiodsp"
1810 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1811 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1812 mpeg1video_decoder_select="error_resilience mpegvideo"
1813 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1814 mpeg2video_decoder_select="error_resilience mpegvideo"
1815 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1816 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1817 mpeg4_encoder_select="h263_encoder"
1818 msmpeg4v1_decoder_select="h263_decoder"
1819 msmpeg4v2_decoder_select="h263_decoder"
1820 msmpeg4v2_encoder_select="h263_encoder"
1821 msmpeg4v3_decoder_select="h263_decoder"
1822 msmpeg4v3_encoder_select="h263_encoder"
1823 mss2_decoder_select="error_resilience qpeldsp vc1_decoder"
1824 mxpeg_decoder_select="mjpeg_decoder"
1825 nellymoser_decoder_select="mdct sinewin"
1826 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1827 nuv_decoder_select="dsputil lzo"
1828 on2avc_decoder_select="mdct"
1829 opus_decoder_deps="avresample"
1830 png_decoder_deps="zlib"
1831 png_encoder_deps="zlib"
1832 png_encoder_select="huffyuvencdsp"
1833 prores_decoder_select="dsputil"
1834 prores_encoder_select="dsputil"
1835 qcelp_decoder_select="lsp"
1836 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1837 ra_144_encoder_select="audio_frame_queue lpc"
1838 ralf_decoder_select="golomb"
1839 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1840 rv10_encoder_select="h263_encoder"
1841 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1842 rv20_encoder_select="h263_encoder"
1843 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1844 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1845 shorten_decoder_select="golomb"
1846 sipr_decoder_select="lsp"
1847 sp5x_decoder_select="mjpeg_decoder"
1848 svq1_decoder_select="hpeldsp"
1849 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1850 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1851 svq3_decoder_suggest="zlib"
1852 tak_decoder_select="dsputil"
1853 theora_decoder_select="vp3_decoder"
1854 thp_decoder_select="mjpeg_decoder"
1855 tiff_decoder_suggest="zlib"
1856 tiff_encoder_suggest="zlib"
1857 truehd_decoder_select="mlp_decoder"
1858 truemotion2_decoder_select="dsputil"
1859 truespeech_decoder_select="dsputil"
1860 tscc_decoder_deps="zlib"
1861 twinvq_decoder_select="mdct lsp sinewin"
1862 utvideo_decoder_select="dsputil"
1863 utvideo_encoder_select="dsputil huffman huffyuvencdsp"
1864 vble_decoder_select="huffyuvdsp"
1865 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8 qpeldsp"
1866 vc1image_decoder_select="vc1_decoder"
1867 vorbis_decoder_select="mdct"
1868 vorbis_encoder_select="mdct"
1869 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1870 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1871 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1872 vp6a_decoder_select="vp6_decoder"
1873 vp6f_decoder_select="vp6_decoder"
1874 vp7_decoder_select="h264pred videodsp"
1875 vp8_decoder_select="h264pred videodsp"
1876 vp9_decoder_select="videodsp"
1877 webp_decoder_select="vp8_decoder"
1878 wmapro_decoder_select="mdct sinewin"
1879 wmav1_decoder_select="mdct sinewin"
1880 wmav1_encoder_select="mdct sinewin"
1881 wmav2_decoder_select="mdct sinewin"
1882 wmav2_encoder_select="mdct sinewin"
1883 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1884 wmv1_decoder_select="h263_decoder"
1885 wmv1_encoder_select="h263_encoder"
1886 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1887 wmv2_encoder_select="h263_encoder"
1888 wmv3_decoder_select="vc1_decoder"
1889 wmv3image_decoder_select="wmv3_decoder"
1890 zerocodec_decoder_deps="zlib"
1891 zlib_decoder_deps="zlib"
1892 zlib_encoder_deps="zlib"
1893 zmbv_decoder_deps="zlib"
1894 zmbv_encoder_deps="zlib"
1895
1896 # hardware accelerators
1897 dxva2_deps="dxva2api_h"
1898 vaapi_deps="va_va_h"
1899 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1900 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1901 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1902
1903 h263_vaapi_hwaccel_deps="vaapi"
1904 h263_vaapi_hwaccel_select="h263_decoder"
1905 h263_vdpau_hwaccel_deps="vdpau"
1906 h263_vdpau_hwaccel_select="h263_decoder"
1907 h264_dxva2_hwaccel_deps="dxva2"
1908 h264_dxva2_hwaccel_select="h264_decoder"
1909 h264_vaapi_hwaccel_deps="vaapi"
1910 h264_vaapi_hwaccel_select="h264_decoder"
1911 h264_vda_hwaccel_deps="vda"
1912 h264_vda_hwaccel_select="h264_decoder"
1913 h264_vda_old_hwaccel_deps="vda"
1914 h264_vda_old_hwaccel_select="h264_decoder"
1915 h264_vdpau_hwaccel_deps="vdpau"
1916 h264_vdpau_hwaccel_select="h264_decoder"
1917 mpeg1_vdpau_hwaccel_deps="vdpau"
1918 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1919 mpeg2_dxva2_hwaccel_deps="dxva2"
1920 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1921 mpeg2_vaapi_hwaccel_deps="vaapi"
1922 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1923 mpeg2_vdpau_hwaccel_deps="vdpau"
1924 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1925 mpeg4_vaapi_hwaccel_deps="vaapi"
1926 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1927 mpeg4_vdpau_hwaccel_deps="vdpau"
1928 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1929 vc1_dxva2_hwaccel_deps="dxva2"
1930 vc1_dxva2_hwaccel_select="vc1_decoder"
1931 vc1_vaapi_hwaccel_deps="vaapi"
1932 vc1_vaapi_hwaccel_select="vc1_decoder"
1933 vc1_vdpau_hwaccel_deps="vdpau"
1934 vc1_vdpau_hwaccel_select="vc1_decoder"
1935 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1936 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1937 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1938
1939 # parsers
1940 h264_parser_select="h264_decoder"
1941 mpegvideo_parser_select="error_resilience mpegvideo"
1942 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
1943 vc1_parser_select="mpegvideo"
1944
1945 # external libraries
1946 libfaac_encoder_deps="libfaac"
1947 libfaac_encoder_select="audio_frame_queue"
1948 libfdk_aac_decoder_deps="libfdk_aac"
1949 libfdk_aac_encoder_deps="libfdk_aac"
1950 libfdk_aac_encoder_select="audio_frame_queue"
1951 libgsm_decoder_deps="libgsm"
1952 libgsm_encoder_deps="libgsm"
1953 libgsm_ms_decoder_deps="libgsm"
1954 libgsm_ms_encoder_deps="libgsm"
1955 libilbc_decoder_deps="libilbc"
1956 libilbc_encoder_deps="libilbc"
1957 libmp3lame_encoder_deps="libmp3lame"
1958 libmp3lame_encoder_select="audio_frame_queue"
1959 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1960 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1961 libopencore_amrnb_encoder_select="audio_frame_queue"
1962 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1963 libopenjpeg_decoder_deps="libopenjpeg"
1964 libopenjpeg_encoder_deps="libopenjpeg"
1965 libopus_decoder_deps="libopus"
1966 libopus_encoder_deps="libopus"
1967 libopus_encoder_select="audio_frame_queue"
1968 libschroedinger_decoder_deps="libschroedinger"
1969 libschroedinger_encoder_deps="libschroedinger"
1970 libspeex_decoder_deps="libspeex"
1971 libspeex_encoder_deps="libspeex"
1972 libspeex_encoder_select="audio_frame_queue"
1973 libtheora_encoder_deps="libtheora"
1974 libtwolame_encoder_deps="libtwolame"
1975 libvo_aacenc_encoder_deps="libvo_aacenc"
1976 libvo_aacenc_encoder_select="audio_frame_queue"
1977 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1978 libvorbis_encoder_deps="libvorbis"
1979 libvorbis_encoder_select="audio_frame_queue"
1980 libvpx_vp8_decoder_deps="libvpx"
1981 libvpx_vp8_encoder_deps="libvpx"
1982 libvpx_vp9_decoder_deps="libvpx"
1983 libvpx_vp9_encoder_deps="libvpx"
1984 libwavpack_encoder_deps="libwavpack"
1985 libwebp_encoder_deps="libwebp"
1986 libx264_encoder_deps="libx264"
1987 libx265_encoder_deps="libx265"
1988 libxavs_encoder_deps="libxavs"
1989 libxvid_encoder_deps="libxvid"
1990
1991 # demuxers / muxers
1992 ac3_demuxer_select="ac3_parser"
1993 asf_demuxer_select="riffdec"
1994 asf_muxer_select="riffenc"
1995 asf_stream_muxer_select="asf_muxer"
1996 avi_demuxer_select="riffdec"
1997 avi_muxer_select="riffenc"
1998 avisynth_demuxer_deps="avisynth"
1999 avisynth_demuxer_select="riffdec"
2000 caf_demuxer_select="riffdec"
2001 dirac_demuxer_select="dirac_parser"
2002 dxa_demuxer_select="riffdec"
2003 eac3_demuxer_select="ac3_parser"
2004 f4v_muxer_select="mov_muxer"
2005 flac_demuxer_select="flac_parser"
2006 hds_muxer_select="flv_muxer"
2007 hls_muxer_select="mpegts_muxer"
2008 ipod_muxer_select="mov_muxer"
2009 ismv_muxer_select="mov_muxer"
2010 matroska_audio_muxer_select="matroska_muxer"
2011 matroska_demuxer_select="riffdec"
2012 matroska_demuxer_suggest="bzlib lzo zlib"
2013 matroska_muxer_select="riffenc"
2014 mmf_muxer_select="riffenc"
2015 mov_demuxer_select="riffdec"
2016 mov_demuxer_suggest="zlib"
2017 mov_muxer_select="riffenc rtpenc_chain"
2018 mp3_demuxer_select="mpegaudio_parser"
2019 mp4_muxer_select="mov_muxer"
2020 mpegts_muxer_select="adts_muxer latm_muxer"
2021 mpegtsraw_demuxer_select="mpegts_demuxer"
2022 mxf_d10_muxer_select="mxf_muxer"
2023 nut_muxer_select="riffenc"
2024 nuv_demuxer_select="riffdec"
2025 ogg_demuxer_select="golomb"
2026 psp_muxer_select="mov_muxer"
2027 rtp_demuxer_select="sdp_demuxer"
2028 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2029 rtsp_demuxer_select="http_protocol rtpdec"
2030 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2031 sap_demuxer_select="sdp_demuxer"
2032 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2033 sdp_demuxer_select="rtpdec"
2034 smoothstreaming_muxer_select="ismv_muxer"
2035 spdif_muxer_select="aac_parser"
2036 tak_demuxer_select="tak_parser"
2037 tg2_muxer_select="mov_muxer"
2038 tgp_muxer_select="mov_muxer"
2039 w64_demuxer_select="wav_demuxer"
2040 wav_demuxer_select="riffdec"
2041 wav_muxer_select="riffenc"
2042 webm_muxer_select="riffenc"
2043 wtv_demuxer_select="riffdec"
2044 xmv_demuxer_select="riffdec"
2045 xwma_demuxer_select="riffdec"
2046
2047 # indevs / outdevs
2048 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2049 alsa_outdev_deps="alsa_asoundlib_h"
2050 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2051 dv1394_indev_deps="dv1394"
2052 dv1394_indev_select="dv_demuxer"
2053 fbdev_indev_deps="linux_fb_h"
2054 jack_indev_deps="jack_jack_h pthreads"
2055 libcdio_indev_deps="libcdio"
2056 libdc1394_indev_deps="libdc1394"
2057 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2058 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2059 pulse_indev_deps="libpulse"
2060 sndio_indev_deps="sndio_h"
2061 sndio_outdev_deps="sndio_h"
2062 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2063 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2064 vfwcap_indev_extralibs="-lavicap32"
2065 x11grab_indev_deps="x11grab XShmCreateImage"
2066
2067 # protocols
2068 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2069 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2070 ffrtmpcrypt_protocol_select="tcp_protocol"
2071 ffrtmphttp_protocol_deps="!librtmp_protocol"
2072 ffrtmphttp_protocol_select="http_protocol"
2073 gopher_protocol_select="network"
2074 http_protocol_select="tcp_protocol"
2075 httpproxy_protocol_select="tcp_protocol"
2076 https_protocol_select="tls_protocol"
2077 librtmp_protocol_deps="librtmp"
2078 librtmpe_protocol_deps="librtmp"
2079 librtmps_protocol_deps="librtmp"
2080 librtmpt_protocol_deps="librtmp"
2081 librtmpte_protocol_deps="librtmp"
2082 mmsh_protocol_select="http_protocol"
2083 mmst_protocol_select="network"
2084 rtmp_protocol_deps="!librtmp_protocol"
2085 rtmp_protocol_select="tcp_protocol"
2086 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2087 rtmps_protocol_deps="!librtmp_protocol"
2088 rtmps_protocol_select="tls_protocol"
2089 rtmpt_protocol_select="ffrtmphttp_protocol"
2090 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2091 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2092 rtp_protocol_select="udp_protocol"
2093 sctp_protocol_deps="struct_sctp_event_subscribe"
2094 sctp_protocol_select="network"
2095 srtp_protocol_select="rtp_protocol"
2096 tcp_protocol_select="network"
2097 tls_protocol_deps_any="openssl gnutls"
2098 tls_protocol_select="tcp_protocol"
2099 udp_protocol_select="network"
2100 unix_protocol_deps="sys_un_h"
2101 unix_protocol_select="network"
2102
2103 # filters
2104 blackframe_filter_deps="gpl"
2105 boxblur_filter_deps="gpl"
2106 bs2b_filter_deps="libbs2b"
2107 cropdetect_filter_deps="gpl"
2108 delogo_filter_deps="gpl"
2109 drawtext_filter_deps="libfreetype"
2110 frei0r_filter_deps="frei0r dlopen"
2111 frei0r_filter_extralibs='$ldl'
2112 frei0r_src_filter_deps="frei0r dlopen"
2113 frei0r_src_filter_extralibs='$ldl'
2114 hqdn3d_filter_deps="gpl"
2115 interlace_filter_deps="gpl"
2116 ocv_filter_deps="libopencv"
2117 resample_filter_deps="avresample"
2118 scale_filter_deps="swscale"
2119
2120 # examples
2121 avcodec_example_deps="avcodec avutil"
2122 filter_audio_example_deps="avfilter avutil"
2123 metadata_example_deps="avformat avutil"
2124 output_example_deps="avcodec avformat avutil swscale"
2125 transcode_aac_example_deps="avcodec avformat avresample"
2126
2127 # libraries, in linking order
2128 avcodec_deps="avutil"
2129 avdevice_deps="avformat avcodec avutil"
2130 avfilter_deps="avutil"
2131 avformat_deps="avcodec avutil"
2132 avresample_deps="avutil"
2133 swscale_deps="avutil"
2134
2135 # programs
2136 avconv_deps="avcodec avfilter avformat avresample swscale"
2137 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2138                fps_filter null_filter resample_filter scale_filter
2139                setpts_filter trim_filter"
2140 avplay_deps="avcodec avformat avresample swscale sdl"
2141 avplay_libs='$sdl_libs'
2142 avplay_select="rdft"
2143 avprobe_deps="avcodec avformat"
2144 avserver_deps="avformat fork !shared"
2145 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2146
2147 # documentation
2148 pod2man_deps="doc"
2149 texi2html_deps="doc"
2150
2151 # default parameters
2152
2153 logfile="config.log"
2154
2155 # installation paths
2156 prefix_default="/usr/local"
2157 bindir_default='${prefix}/bin'
2158 datadir_default='${prefix}/share/avconv'
2159 docdir_default='${prefix}/share/doc/libav'
2160 incdir_default='${prefix}/include'
2161 libdir_default='${prefix}/lib'
2162 mandir_default='${prefix}/share/man'
2163 shlibdir_default="$libdir_default"
2164
2165 # toolchain
2166 ar_default="ar"
2167 cc_default="gcc"
2168 host_cc_default="gcc"
2169 cp_f="cp -f"
2170 ln_s="ln -s -f"
2171 nm_default="nm -g"
2172 objformat="elf"
2173 pkg_config_default=pkg-config
2174 ranlib="ranlib"
2175 strip="strip"
2176 yasmexe="yasm"
2177
2178 nogas=":"
2179
2180 # machine
2181 arch_default=$(uname -m)
2182 cpu="generic"
2183
2184 # OS
2185 target_os_default=$(tolower $(uname -s))
2186 host_os=$target_os_default
2187
2188 # configurable options
2189 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2190
2191 enable asm
2192 enable debug
2193 enable doc
2194 enable optimizations
2195 enable safe_bitstream_reader
2196 enable static
2197 enable swscale_alpha
2198
2199 # By default, enable only those hwaccels that have no external dependencies.
2200 enable dxva2 vdpau
2201
2202 # build settings
2203 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2204 LIBPREF="lib"
2205 LIBSUF=".a"
2206 FULLNAME='$(NAME)$(BUILDSUF)'
2207 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2208 SLIBPREF="lib"
2209 SLIBSUF=".so"
2210 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2211 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2212 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2213 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2214 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2215 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2216
2217 asflags_filter=echo
2218 cflags_filter=echo
2219 ldflags_filter=echo
2220
2221 AS_C='-c'
2222 AS_O='-o $@'
2223 CC_C='-c'
2224 CC_E='-E -o $@'
2225 CC_O='-o $@'
2226 LD_O='-o $@'
2227 LD_LIB='-l%'
2228 LD_PATH='-L'
2229 HOSTCC_C='-c'
2230 HOSTCC_E='-E -o $@'
2231 HOSTCC_O='-o $@'
2232 HOSTLD_O='-o $@'
2233
2234 host_libs='-lm'
2235 host_cflags_filter=echo
2236 host_ldflags_filter=echo
2237
2238 target_path='$(CURDIR)'
2239
2240 # since the object filename is not given with the -MM flag, the compiler
2241 # is only able to print the basename, and we must add the path ourselves
2242 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2243 DEPFLAGS='-MM'
2244
2245 # find source path
2246 if test -f configure; then
2247     source_path=.
2248 else
2249     source_path=$(cd $(dirname "$0"); pwd)
2250     echo "$source_path" | grep -q '[[:blank:]]' &&
2251         die "Out of tree builds are impossible with whitespace in source path."
2252     test -e "$source_path/config.h" &&
2253         die "Out of tree builds are impossible with config.h in source dir."
2254 fi
2255
2256 for v in "$@"; do
2257     r=${v#*=}
2258     l=${v%"$r"}
2259     r=$(sh_quote "$r")
2260     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2261 done
2262
2263 find_things(){
2264     thing=$1
2265     pattern=$2
2266     file=$source_path/$3
2267     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2268 }
2269
2270 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2271 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2272 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2273 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2274 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2275 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2276 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2277 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2278 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2279 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2280 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2281
2282 ALL_COMPONENTS="
2283     $BSF_LIST
2284     $DECODER_LIST
2285     $DEMUXER_LIST
2286     $ENCODER_LIST
2287     $FILTER_LIST
2288     $HWACCEL_LIST
2289     $INDEV_LIST
2290     $MUXER_LIST
2291     $OUTDEV_LIST
2292     $PARSER_LIST
2293     $PROTOCOL_LIST
2294 "
2295
2296 for n in $COMPONENT_LIST; do
2297     v=$(toupper ${n%s})_LIST
2298     eval enable \$$v
2299     eval ${n}_if_any="\$$v"
2300 done
2301
2302 enable $ARCH_EXT_LIST
2303
2304 die_unknown(){
2305     echo "Unknown option \"$1\"."
2306     echo "See $0 --help for available options."
2307     exit 1
2308 }
2309
2310 print_3_columns() {
2311     cat | tr ' ' '\n' | sort | pr -r -3 -t
2312 }
2313
2314 show_list() {
2315     suffix=_$1
2316     shift
2317     echo $* | sed s/$suffix//g | print_3_columns
2318     exit 0
2319 }
2320
2321 rand_list(){
2322     IFS=', '
2323     set -- $*
2324     unset IFS
2325     for thing; do
2326         comp=${thing%:*}
2327         prob=${thing#$comp}
2328         prob=${prob#:}
2329         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2330         echo "prob ${prob:-0.5}"
2331         printf '%s\n' $comp
2332     done
2333 }
2334
2335 do_random(){
2336     action=$1
2337     shift
2338     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2339     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2340 }
2341
2342 for opt do
2343     optval="${opt#*=}"
2344     case "$opt" in
2345         --extra-ldflags=*)
2346             add_ldflags $optval
2347         ;;
2348         --extra-libs=*)
2349             add_extralibs $optval
2350         ;;
2351         --disable-devices)
2352             disable $INDEV_LIST $OUTDEV_LIST
2353         ;;
2354         --enable-debug=*)
2355             debuglevel="$optval"
2356         ;;
2357         --disable-programs)
2358             disable $PROGRAM_LIST
2359         ;;
2360         --disable-everything)
2361             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2362         ;;
2363         --disable-all)
2364             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2365             disable $LIBRARY_LIST $PROGRAM_LIST doc
2366         ;;
2367         --enable-random|--disable-random)
2368             action=${opt%%-random}
2369             do_random ${action#--} $COMPONENT_LIST
2370         ;;
2371         --enable-random=*|--disable-random=*)
2372             action=${opt%%-random=*}
2373             do_random ${action#--} $optval
2374         ;;
2375         --enable-*=*|--disable-*=*)
2376             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2377             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2378             eval list=\$$(toupper $thing)_LIST
2379             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2380             $action $(filter "$name" $list)
2381         ;;
2382         --enable-?*|--disable-?*)
2383             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2384             if is_in $option $COMPONENT_LIST; then
2385                 test $action = disable && action=unset
2386                 eval $action \$$(toupper ${option%s})_LIST
2387             elif is_in $option $CMDLINE_SELECT; then
2388                 $action $option
2389             else
2390                 die_unknown $opt
2391             fi
2392         ;;
2393         --list-*)
2394             NAME="${opt#--list-}"
2395             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2396             NAME=${NAME%s}
2397             eval show_list $NAME \$$(toupper $NAME)_LIST
2398         ;;
2399         --help|-h) show_help
2400         ;;
2401         *)
2402             optname="${opt%%=*}"
2403             optname="${optname#--}"
2404             optname=$(echo "$optname" | sed 's/-/_/g')
2405             if is_in $optname $CMDLINE_SET; then
2406                 eval $optname='$optval'
2407             elif is_in $optname $CMDLINE_APPEND; then
2408                 append $optname "$optval"
2409             else
2410                 die_unknown $opt
2411             fi
2412         ;;
2413     esac
2414 done
2415
2416 disabled logging && logfile=/dev/null
2417
2418 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2419 set >> $logfile
2420
2421 test -n "$cross_prefix" && enable cross_compile
2422
2423 if enabled cross_compile; then
2424     test -n "$arch" && test -n "$target_os" ||
2425         die "Must specify target arch and OS when cross-compiling"
2426 fi
2427
2428 ar_default="${cross_prefix}${ar_default}"
2429 cc_default="${cross_prefix}${cc_default}"
2430 nm_default="${cross_prefix}${nm_default}"
2431 pkg_config_default="${cross_prefix}${pkg_config_default}"
2432 ranlib="${cross_prefix}${ranlib}"
2433 strip="${cross_prefix}${strip}"
2434
2435 sysinclude_default="${sysroot}/usr/include"
2436
2437 case "$toolchain" in
2438     clang-asan)
2439         cc_default="clang"
2440         add_cflags  -fsanitize=address
2441         add_ldflags -fsanitize=address
2442     ;;
2443     clang-tsan)
2444         cc_default="clang"
2445         add_cflags  -fsanitize=thread -pie
2446         add_ldflags -fsanitize=thread -pie
2447     ;;
2448     clang-usan)
2449         cc_default="clang"
2450         add_cflags  -fsanitize=undefined -O1
2451         add_ldflags -fsanitize=undefined
2452     ;;
2453     gcc-asan)
2454         cc_default="gcc"
2455         add_cflags  -fsanitize=address
2456         add_ldflags -fsanitize=address
2457     ;;
2458     gcc-tsan)
2459         cc_default="gcc"
2460         add_cflags  -fsanitize=thread -pie -fPIC
2461         add_ldflags -fsanitize=thread -pie -fPIC
2462     ;;
2463     gcc-usan)
2464         cc_default="gcc"
2465         add_cflags  -fsanitize=undefined
2466         add_ldflags -fsanitize=undefined
2467     ;;
2468     valgrind-massif)
2469         target_exec_default="valgrind"
2470         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2471     ;;
2472     valgrind-memcheck)
2473         target_exec_default="valgrind"
2474         target_exec_args="--track-origins=yes --leak-check=full"
2475     ;;
2476     msvc)
2477         # Check whether the current MSVC version needs the C99 converter.
2478         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2479         # support enough of C99 to build libav. Default to the new
2480         # behaviour if the regexp was unable to match anything, since this
2481         # successfully parses the version number of existing supported
2482         # versions that require the converter (MSVC 2010 and 2012).
2483         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2484         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2485             cc_default="cl"
2486         else
2487             cc_default="c99wrap cl"
2488         fi
2489         ld_default="link"
2490         nm_default="dumpbin -symbols"
2491         ar_default="lib"
2492         target_os_default="win32"
2493         # Use a relative path for TMPDIR. This makes sure all the
2494         # ffconf temp files are written with a relative path, avoiding
2495         # issues with msys/win32 path conversion for MSVC parameters
2496         # such as -Fo<file> or -out:<file>.
2497         TMPDIR=.
2498     ;;
2499     icl)
2500         cc_default="icl"
2501         ld_default="xilink"
2502         nm_default="dumpbin -symbols"
2503         ar_default="xilib"
2504         target_os_default="win32"
2505         TMPDIR=.
2506     ;;
2507     gcov)
2508         add_cflags  -fprofile-arcs -ftest-coverage
2509         add_ldflags -fprofile-arcs -ftest-coverage
2510     ;;
2511     hardened)
2512         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2513         add_ldflags -Wl,-z,relro -Wl,-z,now
2514     ;;
2515     ?*)
2516         die "Unknown toolchain $toolchain"
2517     ;;
2518 esac
2519
2520 set_default arch cc pkg_config sysinclude target_exec target_os
2521 enabled cross_compile || host_cc_default=$cc
2522 set_default host_cc
2523
2524 if ! $pkg_config --version >/dev/null 2>&1; then
2525     warn "$pkg_config not found, library detection may fail."
2526     pkg_config=false
2527 fi
2528
2529 exesuf() {
2530     case $1 in
2531         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2532     esac
2533 }
2534
2535 EXESUF=$(exesuf $target_os)
2536 HOSTEXESUF=$(exesuf $host_os)
2537
2538 # set temporary file name
2539 : ${TMPDIR:=$TEMPDIR}
2540 : ${TMPDIR:=$TMP}
2541 : ${TMPDIR:=/tmp}
2542
2543 if ! check_cmd mktemp -u XXXXXX; then
2544     # simple replacement for missing mktemp
2545     # NOT SAFE FOR GENERAL USE
2546     mktemp(){
2547         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2548     }
2549 fi
2550
2551 tmpfile(){
2552     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2553         (set -C; exec > $tmp) 2>/dev/null ||
2554         die "Unable to create temporary file in $TMPDIR."
2555     append TMPFILES $tmp
2556     eval $1=$tmp
2557 }
2558
2559 trap 'rm -f -- $TMPFILES' EXIT
2560
2561 tmpfile TMPASM .asm
2562 tmpfile TMPC   .c
2563 tmpfile TMPE   $EXESUF
2564 tmpfile TMPH   .h
2565 tmpfile TMPO   .o
2566 tmpfile TMPS   .S
2567 tmpfile TMPSH  .sh
2568 tmpfile TMPV   .ver
2569
2570 unset -f mktemp
2571
2572 chmod +x $TMPE
2573
2574 # make sure we can execute files in $TMPDIR
2575 cat > $TMPSH 2>> $logfile <<EOF
2576 #! /bin/sh
2577 EOF
2578 chmod +x $TMPSH >> $logfile 2>&1
2579 if ! $TMPSH >> $logfile 2>&1; then
2580     cat <<EOF
2581 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2582 variable to another directory and make sure that it is not mounted noexec.
2583 EOF
2584     die "Sanity test failed."
2585 fi
2586
2587 ccc_flags(){
2588     for flag; do
2589         case $flag in
2590             -std=c99)           echo -c99                       ;;
2591             -mcpu=*)            echo -arch ${flag#*=}           ;;
2592             -mieee)             echo -ieee                      ;;
2593             -O*|-fast)          echo $flag                      ;;
2594             -fno-math-errno)    echo -assume nomath_errno       ;;
2595             -g)                 echo -g3                        ;;
2596             -Wall)              echo -msg_enable level2         ;;
2597             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2598             -Wl,*)              echo $flag                      ;;
2599             -f*|-W*)                                            ;;
2600             *)                  echo $flag                      ;;
2601         esac
2602    done
2603 }
2604
2605 cparser_flags(){
2606     for flag; do
2607         case $flag in
2608             -Wno-switch)             echo -Wno-switch-enum ;;
2609             -Wno-format-zero-length) ;;
2610             -Wdisabled-optimization) ;;
2611             -Wno-pointer-sign)       echo -Wno-other ;;
2612             *)                       echo $flag ;;
2613         esac
2614     done
2615 }
2616
2617 msvc_common_flags(){
2618     for flag; do
2619         case $flag in
2620             # In addition to specifying certain flags under the compiler
2621             # specific filters, they must be specified here as well or else the
2622             # generic catch all at the bottom will print the original flag.
2623             -Wall)                ;;
2624             -std=c99)             ;;
2625             # Common flags
2626             -fomit-frame-pointer) ;;
2627             -g)                   echo -Z7 ;;
2628             -fno-math-errno)      ;;
2629             -fno-common)          ;;
2630             -fno-signed-zeros)    ;;
2631             -fPIC)                ;;
2632             -mthumb)              ;;
2633             -march=*)             ;;
2634             -lz)                  echo zlib.lib ;;
2635             -lavifil32)           echo vfw32.lib ;;
2636             -lavicap32)           echo vfw32.lib user32.lib ;;
2637             -l*)                  echo ${flag#-l}.lib ;;
2638             *)                    echo $flag ;;
2639         esac
2640     done
2641 }
2642
2643 msvc_flags(){
2644     msvc_common_flags "$@"
2645     for flag; do
2646         case $flag in
2647             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2648                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2649                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2650                                        -wd4273 ;;
2651         esac
2652     done
2653 }
2654
2655 icl_flags(){
2656     msvc_common_flags "$@"
2657     for flag; do
2658         case $flag in
2659             # Despite what Intel's documentation says -Wall, which is supported
2660             # on Windows, does enable remarks so disable them here.
2661             -Wall)                echo $flag -Qdiag-disable:remark ;;
2662             -std=c99)             echo -Qstd=c99 ;;
2663         esac
2664     done
2665 }
2666
2667 pgi_flags(){
2668     for flag; do
2669         case $flag in
2670             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2671             -fomit-frame-pointer) echo -Mnoframe ;;
2672             -g)                   echo -gopt ;;
2673             *)                    echo $flag ;;
2674         esac
2675     done
2676 }
2677
2678 suncc_flags(){
2679     for flag; do
2680         case $flag in
2681             -march=*|-mcpu=*)
2682                 case "${flag#*=}" in
2683                     native)                   echo -xtarget=native       ;;
2684                     v9|niagara)               echo -xarch=sparc          ;;
2685                     ultrasparc)               echo -xarch=sparcvis       ;;
2686                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2687                     i586|pentium)             echo -xchip=pentium        ;;
2688                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2689                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2690                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2691                     pentium4*)          echo -xtarget=pentium4           ;;
2692                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2693                     *-sse3)             echo -xarch=sse3                 ;;
2694                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2695                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2696                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2697                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2698                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2699                     k8|opteron|athlon64|athlon-fx)
2700                                                echo -xarch=sse2a         ;;
2701                     athlon*)                   echo -xarch=pentium_proa  ;;
2702                 esac
2703                 ;;
2704             -std=c99)             echo -xc99              ;;
2705             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2706             -fPIC)                echo -KPIC -xcode=pic32 ;;
2707             -W*,*)                echo $flag              ;;
2708             -f*-*|-W*|-mimpure-text)                      ;;
2709             -shared)              echo -G                 ;;
2710             *)                    echo $flag              ;;
2711         esac
2712     done
2713 }
2714
2715 tms470_flags(){
2716     for flag; do
2717         case $flag in
2718             -march=*|-mcpu=*)
2719                 case "${flag#*=}" in
2720                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2721                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2722                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2723                     armv6*|arm11*)          echo -mv=6   ;;
2724                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2725                                             echo -mv=5e  ;;
2726                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2727                 esac
2728                 ;;
2729             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2730             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2731             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2732             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2733             -msoft-float)   echo --float_support=vfplib       ;;
2734             -O[0-3]|-mf=*)  echo $flag                        ;;
2735             -g)             echo -g -mn                       ;;
2736             -pds=*)         echo $flag                        ;;
2737             -D*|-I*)        echo $flag                        ;;
2738             --gcc|--abi=*)  echo $flag                        ;;
2739             -me)            echo $flag                        ;;
2740         esac
2741     done
2742 }
2743
2744 probe_cc(){
2745     pfx=$1
2746     _cc=$2
2747
2748     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2749     unset _ld_o _ldflags _ld_lib _ld_path
2750     unset _depflags _DEPCMD _DEPFLAGS
2751     _flags_filter=echo
2752
2753     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2754         _type=llvm_gcc
2755         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2756         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2757         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2758         _cflags_speed='-O3'
2759         _cflags_size='-Os'
2760     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2761         _type=gcc
2762         gcc_version=$($_cc --version | head -n1)
2763         gcc_basever=$($_cc -dumpversion)
2764         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2765         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2766         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2767         if ! $_cc -dumpversion | grep -q '^2\.'; then
2768             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2769         fi
2770         _cflags_speed='-O3'
2771         _cflags_size='-Os'
2772     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2773         _type=icc
2774         _ident=$($_cc --version | head -n1)
2775         _depflags='-MMD'
2776         _cflags_speed='-O3'
2777         _cflags_size='-Os'
2778         _cflags_noopt='-O1'
2779     elif $_cc -v 2>&1 | grep -q xlc; then
2780         _type=xlc
2781         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2782         _cflags_speed='-O5'
2783         _cflags_size='-O5 -qcompact'
2784     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2785         _type=ccc
2786         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2787         _DEPFLAGS='-M'
2788         _cflags_speed='-fast'
2789         _cflags_size='-O1'
2790         _flags_filter=ccc_flags
2791     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2792         test -d "$sysroot" || die "No valid sysroot specified."
2793         _type=armcc
2794         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2795         armcc_conf="$PWD/armcc.conf"
2796         $_cc --arm_linux_configure                 \
2797              --arm_linux_config_file="$armcc_conf" \
2798              --configure_sysroot="$sysroot"        \
2799              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2800              die "Error creating armcc configuration file."
2801         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2802         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2803         as_default="${cross_prefix}gcc"
2804         _depflags='-MMD'
2805         _cflags_speed='-O3'
2806         _cflags_size='-Os'
2807     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2808         _type=tms470
2809         _ident=$($_cc -version | head -n1 | tr -s ' ')
2810         _flags='--gcc --abi=eabi -me'
2811         _cc_e='-ppl -fe=$@'
2812         _cc_o='-fe=$@'
2813         _depflags='-ppa -ppd=$(@:.o=.d)'
2814         _cflags_speed='-O3 -mf=5'
2815         _cflags_size='-O3 -mf=2'
2816         _flags_filter=tms470_flags
2817     elif $_cc -v 2>&1 | grep -q clang; then
2818         _type=clang
2819         _ident=$($_cc --version | head -n1)
2820         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2821         _cflags_speed='-O3'
2822         _cflags_size='-Os'
2823     elif $_cc -V 2>&1 | grep -q Sun; then
2824         _type=suncc
2825         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2826         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2827         _DEPFLAGS='-xM1 -xc99'
2828         _ldflags='-std=c99'
2829         _cflags_speed='-O5'
2830         _cflags_size='-O5 -xspace'
2831         _flags_filter=suncc_flags
2832     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2833         _type=pathscale
2834         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2835         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2836         _cflags_speed='-O2'
2837         _cflags_size='-Os'
2838         _flags_filter='filter_out -Wdisabled-optimization'
2839     elif $_cc -v 2>&1 | grep -q Open64; then
2840         _type=open64
2841         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2842         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2843         _cflags_speed='-O2'
2844         _cflags_size='-Os'
2845         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2846     elif $_cc -V 2>&1 | grep -q Portland; then
2847         _type=pgi
2848         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2849         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2850         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2851         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2852         _cflags_noopt="-O1"
2853         _flags_filter=pgi_flags
2854     elif $_cc 2>&1 | grep -q Microsoft; then
2855         _type=msvc
2856         _ident=$($cc 2>&1 | head -n1)
2857         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2858         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2859         _cflags_speed="-O2"
2860         _cflags_size="-O1"
2861         if $_cc 2>&1 | grep -q Linker; then
2862             _ld_o='-out:$@'
2863         else
2864             _ld_o='-Fe$@'
2865         fi
2866         _cc_o='-Fo$@'
2867         _cc_e='-P -Fi$@'
2868         _flags_filter=msvc_flags
2869         _ld_lib='lib%.a'
2870         _ld_path='-libpath:'
2871         _flags='-nologo'
2872         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2873         if [ $pfx = hostcc ]; then
2874             append _cflags -Dsnprintf=_snprintf
2875         fi
2876     elif $_cc 2>&1 | grep -q Intel; then
2877         _type=icl
2878         _ident=$($cc 2>&1 | head -n1)
2879         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2880         # Not only is O3 broken on 13.x+ but it is slower on all previous
2881         # versions (tested) as well.
2882         _cflags_speed="-O2"
2883         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2884         if $_cc 2>&1 | grep -q Linker; then
2885             _ld_o='-out:$@'
2886         else
2887             _ld_o='-Fe$@'
2888         fi
2889         _cc_o='-Fo$@'
2890         _cc_e='-P'
2891         _flags_filter=icl_flags
2892         _ld_lib='lib%.a'
2893         _ld_path='-libpath:'
2894         # -Qdiag-error to make icl error when seeing certain unknown arguments
2895         _flags='-nologo -Qdiag-error:4044,10157'
2896         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2897         # with MSVC which enables it by default.
2898         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2899         if [ $pfx = hostcc ]; then
2900             append _cflags -Dsnprintf=_snprintf
2901         fi
2902     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2903         _type=cparser
2904         _ident=$($_cc --version | head -n1)
2905         _depflags='-MMD'
2906         _cflags_speed='-O4'
2907         _cflags_size='-O2'
2908         _flags_filter=cparser_flags
2909     fi
2910
2911     eval ${pfx}_type=\$_type
2912     eval ${pfx}_ident=\$_ident
2913 }
2914
2915 set_ccvars(){
2916     eval ${1}_C=\${_cc_c-\${${1}_C}}
2917     eval ${1}_E=\${_cc_e-\${${1}_E}}
2918     eval ${1}_O=\${_cc_o-\${${1}_O}}
2919
2920     if [ -n "$_depflags" ]; then
2921         eval ${1}_DEPFLAGS=\$_depflags
2922     else
2923         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2924         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2925         eval DEP${1}FLAGS=\$_flags
2926     fi
2927 }
2928
2929 probe_cc cc "$cc"
2930 cflags_filter=$_flags_filter
2931 cflags_speed=$_cflags_speed
2932 cflags_size=$_cflags_size
2933 cflags_noopt=$_cflags_noopt
2934 add_cflags $_flags $_cflags
2935 cc_ldflags=$_ldflags
2936 set_ccvars CC
2937
2938 probe_cc hostcc "$host_cc"
2939 host_cflags_filter=$_flags_filter
2940 add_host_cflags  $_flags $_cflags
2941 set_ccvars HOSTCC
2942
2943 test -n "$cc_type" && enable $cc_type ||
2944     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2945
2946 : ${as_default:=$cc}
2947 : ${dep_cc_default:=$cc}
2948 : ${ld_default:=$cc}
2949 : ${host_ld_default:=$host_cc}
2950 set_default ar as dep_cc ld host_ld
2951
2952 probe_cc as "$as"
2953 asflags_filter=$_flags_filter
2954 add_asflags $_flags $_cflags
2955 set_ccvars AS
2956
2957 probe_cc ld "$ld"
2958 ldflags_filter=$_flags_filter
2959 add_ldflags $_flags $_ldflags
2960 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2961 LD_O=${_ld_o-$LD_O}
2962 LD_LIB=${_ld_lib-$LD_LIB}
2963 LD_PATH=${_ld_path-$LD_PATH}
2964
2965 probe_cc hostld "$host_ld"
2966 host_ldflags_filter=$_flags_filter
2967 add_host_ldflags $_flags $_ldflags
2968 HOSTLD_O=${_ld_o-$HOSTLD_O}
2969
2970 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2971     probe_cc depcc "$dep_cc"
2972     CCDEP=${_DEPCMD:-$DEPCMD}
2973     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2974     DEPCCFLAGS=$_flags
2975 fi
2976
2977 if $ar 2>&1 | grep -q Microsoft; then
2978     arflags="-nologo"
2979     ar_o='-out:$@'
2980 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2981     arflags="rq"
2982     ar_o='$@'
2983 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2984     arflags='-Xany -r -c'
2985     ar_o='$@'
2986 else
2987     arflags="rc"
2988     ar_o='$@'
2989 fi
2990
2991 add_cflags $extra_cflags
2992 add_asflags $extra_cflags
2993
2994 if test -n "$sysroot"; then
2995     case "$cc_type" in
2996         gcc|llvm_gcc|clang)
2997             add_cppflags --sysroot="$sysroot"
2998             add_ldflags --sysroot="$sysroot"
2999         ;;
3000         tms470)
3001             add_cppflags -I"$sysinclude"
3002             add_ldflags  --sysroot="$sysroot"
3003         ;;
3004     esac
3005 fi
3006
3007 if test "$cpu" = host; then
3008     enabled cross_compile &&
3009         die "--cpu=host makes no sense when cross-compiling."
3010
3011     case "$cc_type" in
3012         gcc|llvm_gcc)
3013             check_native(){
3014                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3015                 sed -n "/cc1.*$1=/{
3016                             s/.*$1=\\([^ ]*\\).*/\\1/
3017                             p
3018                             q
3019                         }" $TMPE
3020             }
3021             cpu=$(check_native -march || check_native -mcpu)
3022         ;;
3023     esac
3024
3025     test "${cpu:-host}" = host &&
3026         die "--cpu=host not supported with compiler $cc"
3027 fi
3028
3029 # Deal with common $arch aliases
3030 case "$arch" in
3031     aarch64|arm64)
3032         arch="aarch64"
3033     ;;
3034     arm*)
3035         arch="arm"
3036     ;;
3037     mips*|IP*)
3038         arch="mips"
3039     ;;
3040     parisc*|hppa*)
3041         arch="parisc"
3042     ;;
3043     "Power Macintosh"|ppc*|powerpc*)
3044         arch="ppc"
3045     ;;
3046     s390|s390x)
3047         arch="s390"
3048     ;;
3049     sh4|sh)
3050         arch="sh4"
3051     ;;
3052     sun4u|sparc*)
3053         arch="sparc"
3054     ;;
3055     tilegx|tile-gx)
3056         arch="tilegx"
3057     ;;
3058     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3059         arch="x86"
3060     ;;
3061 esac
3062
3063 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3064 enable $arch
3065
3066 # Add processor-specific flags
3067 if enabled aarch64; then
3068
3069     case $cpu in
3070         armv*)
3071             cpuflags="-march=$cpu"
3072         ;;
3073         *)
3074             cpuflags="-mcpu=$cpu"
3075         ;;
3076     esac
3077
3078 elif enabled alpha; then
3079
3080     cpuflags="-mcpu=$cpu"
3081
3082 elif enabled arm; then
3083
3084     check_arm_arch() {
3085         check_cpp_condition stddef.h \
3086             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3087             $cpuflags
3088     }
3089
3090     probe_arm_arch() {
3091         if   check_arm_arch 4;        then echo armv4;
3092         elif check_arm_arch 4T;       then echo armv4t;
3093         elif check_arm_arch 5;        then echo armv5;
3094         elif check_arm_arch 5E;       then echo armv5e;
3095         elif check_arm_arch 5T;       then echo armv5t;
3096         elif check_arm_arch 5TE;      then echo armv5te;
3097         elif check_arm_arch 5TEJ;     then echo armv5te;
3098         elif check_arm_arch 6;        then echo armv6;
3099         elif check_arm_arch 6J;       then echo armv6j;
3100         elif check_arm_arch 6K;       then echo armv6k;
3101         elif check_arm_arch 6Z;       then echo armv6z;
3102         elif check_arm_arch 6ZK;      then echo armv6zk;
3103         elif check_arm_arch 6T2;      then echo armv6t2;
3104         elif check_arm_arch 7;        then echo armv7;
3105         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3106         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3107         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3108         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3109         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3110         fi
3111     }
3112
3113     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3114
3115     case $cpu in
3116         armv*)
3117             cpuflags="-march=$cpu"
3118             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3119         ;;
3120         *)
3121             cpuflags="-mcpu=$cpu"
3122             case $cpu in
3123                 cortex-a*)                               subarch=armv7a  ;;
3124                 cortex-r*)                               subarch=armv7r  ;;
3125                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3126                 arm11*)                                  subarch=armv6   ;;
3127                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3128                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3129                 *)                             subarch=$(probe_arm_arch) ;;
3130             esac
3131         ;;
3132     esac
3133
3134     case "$subarch" in
3135         armv5t*)    enable fast_clz                ;;
3136         armv[6-8]*) enable fast_clz fast_unaligned ;;
3137     esac
3138
3139 elif enabled avr32; then
3140
3141     case $cpu in
3142         ap7[02]0[0-2])
3143             subarch="avr32_ap"
3144             cpuflags="-mpart=$cpu"
3145         ;;
3146         ap)
3147             subarch="avr32_ap"
3148             cpuflags="-march=$cpu"
3149         ;;
3150         uc3[ab]*)
3151             subarch="avr32_uc"
3152             cpuflags="-mcpu=$cpu"
3153         ;;
3154         uc)
3155             subarch="avr32_uc"
3156             cpuflags="-march=$cpu"
3157         ;;
3158     esac
3159
3160 elif enabled bfin; then
3161
3162     cpuflags="-mcpu=$cpu"
3163
3164 elif enabled mips; then
3165
3166     cpuflags="-march=$cpu"
3167
3168 elif enabled ppc; then
3169
3170     disable ldbrx
3171
3172     case $(tolower $cpu) in
3173         601|ppc601|powerpc601)
3174             cpuflags="-mcpu=601"
3175             disable altivec
3176         ;;
3177         603*|ppc603*|powerpc603*)
3178             cpuflags="-mcpu=603"
3179             disable altivec
3180         ;;
3181         604*|ppc604*|powerpc604*)
3182             cpuflags="-mcpu=604"
3183             disable altivec
3184         ;;
3185         g3|75*|ppc75*|powerpc75*)
3186             cpuflags="-mcpu=750"
3187             disable altivec
3188         ;;
3189         g4|745*|ppc745*|powerpc745*)
3190             cpuflags="-mcpu=7450"
3191         ;;
3192         74*|ppc74*|powerpc74*)
3193             cpuflags="-mcpu=7400"
3194         ;;
3195         g5|970|ppc970|powerpc970)
3196             cpuflags="-mcpu=970"
3197         ;;
3198         power[3-7]*)
3199             cpuflags="-mcpu=$cpu"
3200         ;;
3201         cell)
3202             cpuflags="-mcpu=cell"
3203             enable ldbrx
3204         ;;
3205         e500mc)
3206             cpuflags="-mcpu=e500mc"
3207             disable altivec
3208         ;;
3209         e500v2)
3210             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3211             disable altivec
3212             disable dcbzl
3213         ;;
3214         e500)
3215             cpuflags="-mcpu=8540 -mhard-float"
3216             disable altivec
3217             disable dcbzl
3218         ;;
3219     esac
3220
3221 elif enabled sparc; then
3222
3223     case $cpu in
3224         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3225             cpuflags="-mcpu=$cpu"
3226         ;;
3227         ultrasparc*|niagara[234])
3228             cpuflags="-mcpu=$cpu"
3229         ;;
3230     esac
3231
3232 elif enabled x86; then
3233
3234     case $cpu in
3235         i[345]86|pentium)
3236             cpuflags="-march=$cpu"
3237             disable mmx
3238         ;;
3239         # targets that do NOT support nopl and conditional mov (cmov)
3240         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3241             cpuflags="-march=$cpu"
3242             disable i686
3243         ;;
3244         # targets that do support nopl and conditional mov (cmov)
3245         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3246             cpuflags="-march=$cpu"
3247             enable i686
3248             enable fast_cmov
3249         ;;
3250         # targets that do support conditional mov but on which it's slow
3251         pentium4|pentium4m|prescott|nocona)
3252             cpuflags="-march=$cpu"
3253             enable i686
3254             disable fast_cmov
3255         ;;
3256     esac
3257
3258 fi
3259
3260 if [ "$cpu" != generic ]; then
3261     add_cflags  $cpuflags
3262     add_asflags $cpuflags
3263 fi
3264
3265 # compiler sanity check
3266 check_exec <<EOF
3267 int main(void){ return 0; }
3268 EOF
3269 if test "$?" != 0; then
3270     echo "$cc is unable to create an executable file."
3271     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3272         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3273         echo "Only do this if you know what cross compiling means."
3274     fi
3275     die "C compiler test failed."
3276 fi
3277
3278 add_cppflags -D_ISOC99_SOURCE
3279 check_cflags -std=c99
3280 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3281 #include <stdlib.h>
3282 EOF
3283 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3284 #include <stdlib.h>
3285 EOF
3286
3287 add_host_cppflags -D_ISOC99_SOURCE
3288 check_host_cflags -std=c99
3289 check_host_cflags -Wall
3290 check_host_cflags -O3
3291
3292 check_64bit(){
3293     arch32=$1
3294     arch64=$2
3295     expr=$3
3296     check_code cc "" "int test[2*($expr) - 1]" &&
3297         subarch=$arch64 || subarch=$arch32
3298 }
3299
3300 case "$arch" in
3301     aarch64|alpha|ia64)
3302         spic=$shared
3303     ;;
3304     mips)
3305         check_64bit mips mips64 '_MIPS_SIM > 1'
3306         spic=$shared
3307     ;;
3308     parisc)
3309         check_64bit parisc parisc64 'sizeof(void *) > 4'
3310         spic=$shared
3311     ;;
3312     ppc)
3313         check_64bit ppc ppc64 'sizeof(void *) > 4'
3314         spic=$shared
3315     ;;
3316     s390)
3317         check_64bit s390 s390x 'sizeof(void *) > 4'
3318         spic=$shared
3319     ;;
3320     sparc)
3321         check_64bit sparc sparc64 'sizeof(void *) > 4'
3322         spic=$shared
3323     ;;
3324     x86)
3325         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3326         if test "$subarch" = "x86_64"; then
3327             spic=$shared
3328         fi
3329     ;;
3330 esac
3331
3332 enable $subarch
3333 enabled spic && enable_weak pic
3334
3335 # OS specific
3336 case $target_os in
3337     aix)
3338         SHFLAGS=-shared
3339         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3340         enabled shared && add_ldflags -Wl,-brtl
3341         ;;
3342     haiku)
3343         prefix_default="/boot/common"
3344         network_extralibs="-lnetwork"
3345         host_libs=
3346         ;;
3347     sunos)
3348         SHFLAGS='-shared -Wl,-h,$$(@F)'
3349         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3350         network_extralibs="-lsocket -lnsl"
3351         # When using suncc to build, the Solaris linker will mark
3352         # an executable with each instruction set encountered by
3353         # the Solaris assembler.  As our libraries contain their own
3354         # guards for processor-specific code, instead suppress
3355         # generation of the HWCAPS ELF section on Solaris x86 only.
3356         enabled_all suncc x86 &&
3357             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3358             add_ldflags -Wl,-M,mapfile
3359         nm_default='nm -P -g'
3360         ;;
3361     netbsd)
3362         disable symver
3363         oss_indev_extralibs="-lossaudio"
3364         oss_outdev_extralibs="-lossaudio"
3365         ;;
3366     openbsd|bitrig)
3367         disable symver
3368         SHFLAGS='-shared'
3369         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3370         SLIB_INSTALL_LINKS=
3371         oss_indev_extralibs="-lossaudio"
3372         oss_outdev_extralibs="-lossaudio"
3373         ;;
3374     dragonfly)
3375         disable symver
3376         ;;
3377     freebsd)
3378         ;;
3379     bsd/os)
3380         add_extralibs -lpoll -lgnugetopt
3381         ;;
3382     darwin)
3383         gas="gas-preprocessor.pl $cc"
3384         enabled ppc && add_asflags -force_cpusubtype_ALL
3385         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3386         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3387         add_ldflags -Wl,-dynamic,-search_paths_first
3388         SLIBSUF=".dylib"
3389         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3390         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3391         objformat="macho"
3392         enabled x86_64 && objformat="macho64"
3393         enabled_any pic shared ||
3394             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3395         ;;
3396     mingw32*)
3397         if test $target_os = "mingw32ce"; then
3398             disable network
3399         else
3400             target_os=mingw32
3401         fi
3402         LIBTARGET=i386
3403         if enabled x86_64; then
3404             LIBTARGET="i386:x86-64"
3405         elif enabled arm; then
3406             LIBTARGET=arm-wince
3407         fi
3408         check_ldflags -Wl,--nxcompat
3409         check_ldflags -Wl,--dynamicbase
3410         shlibdir_default="$bindir_default"
3411         SLIBPREF=""
3412         SLIBSUF=".dll"
3413         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3414         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3415         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3416         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3417         SLIB_INSTALL_LINKS=
3418         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3419         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3420         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3421         objformat="win32"
3422         dlltool="${cross_prefix}dlltool"
3423         ranlib=:
3424         enable dos_paths
3425         ;;
3426     win32|win64)
3427         disable symver
3428         if enabled shared; then
3429             # Link to the import library instead of the normal static library
3430             # for shared libs.
3431             LD_LIB='%.lib'
3432             # Cannot build both shared and static libs with MSVC or icl.
3433             disable static
3434         fi
3435         shlibdir_default="$bindir_default"
3436         SLIBPREF=""
3437         SLIBSUF=".dll"
3438         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3439         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3440         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3441         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3442         SLIB_INSTALL_LINKS=
3443         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3444         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3445         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3446         objformat="win32"
3447         ranlib=:
3448         enable dos_paths
3449         ;;
3450     cygwin*)
3451         target_os=cygwin
3452         shlibdir_default="$bindir_default"
3453         SLIBPREF="cyg"
3454         SLIBSUF=".dll"
3455         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3456         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3457         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3458         SLIB_INSTALL_LINKS=
3459         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3460         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3461         objformat="win32"
3462         enable dos_paths
3463         ;;
3464     *-dos|freedos|opendos)
3465         network_extralibs="-lsocket"
3466         objformat="coff"
3467         enable dos_paths
3468         add_cppflags -U__STRICT_ANSI__
3469         ;;
3470     linux)
3471         enable dv1394
3472         ;;
3473     irix*)
3474         target_os=irix
3475         ranlib="echo ignoring ranlib"
3476         ;;
3477     os/2*)
3478         ln_s="cp -f"
3479         objformat="aout"
3480         add_cppflags -D_GNU_SOURCE
3481         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3482         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3483         LIBSUF="_s.a"
3484         SLIBPREF=""
3485         SLIBSUF=".dll"
3486         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3487         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3488         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3489             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3490             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3491             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3492             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3493             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3494         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3495             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3496         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3497         enable dos_paths
3498         ;;
3499     gnu/kfreebsd)
3500         add_cppflags -D_BSD_SOURCE
3501         ;;
3502     gnu)
3503         ;;
3504     qnx)
3505         add_cppflags -D_QNX_SOURCE
3506         network_extralibs="-lsocket"
3507         ;;
3508     symbian)
3509         SLIBSUF=".dll"
3510         enable dos_paths
3511         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3512         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3513         add_ldflags -Wl,--target1-abs,--no-undefined \
3514                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3515                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3516         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3517                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3518                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3519         ;;
3520     osf1)
3521         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3522         ;;
3523     minix)
3524         ;;
3525     plan9)
3526         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3527                      -D_REENTRANT_SOURCE        \
3528                      -D_RESEARCH_SOURCE         \
3529                      -DFD_SETSIZE=96            \
3530                      -DHAVE_SOCK_OPTS
3531         add_compat strtod.o strtod=avpriv_strtod
3532         network_extralibs='-lbsd'
3533         exeobjs=compat/plan9/main.o
3534         disable avserver
3535         cp_f='cp'
3536         ;;
3537     none)
3538         ;;
3539     *)
3540         die "Unknown OS '$target_os'."
3541         ;;
3542 esac
3543
3544 # determine libc flavour
3545
3546 probe_libc(){
3547     pfx=$1
3548     pfx_no_=${pfx%_}
3549     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3550     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3551         eval ${pfx}libc_type=uclibc
3552         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3553     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3554         eval ${pfx}libc_type=glibc
3555         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3556     # MinGW headers can be installed on Cygwin, so check for newlib first.
3557     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3558         eval ${pfx}libc_type=newlib
3559         add_${pfx}cppflags -U__STRICT_ANSI__
3560     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3561     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3562         eval ${pfx}libc_type=mingw64
3563         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3564         eval test \$${pfx_no_}cc_type = "gcc" &&
3565             add_${pfx}cppflags -D__printf__=__gnu_printf__
3566     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3567          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3568         eval ${pfx}libc_type=mingw32
3569         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3570             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3571             die "ERROR: MinGW32 runtime version must be >= 3.15."
3572         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3573         eval test \$${pfx_no_}cc_type = "gcc" &&
3574             add_${pfx}cppflags -D__printf__=__gnu_printf__
3575     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3576         eval ${pfx}libc_type=msvcrt
3577         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3578         # 0x601 by default unless something else is set by the user.
3579         # This can easily lead to us detecting functions only present
3580         # in such new versions and producing binaries requiring windows 7.0.
3581         # Therefore explicitly set the default to XP unless the user has
3582         # set something else on the command line.
3583         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3584             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3585     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3586         eval ${pfx}libc_type=klibc
3587     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3588         eval ${pfx}libc_type=bionic
3589     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3590         eval ${pfx}libc_type=solaris
3591         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3592     fi
3593 }
3594
3595 probe_libc
3596 test -n "$libc_type" && enable libc_$libc_type
3597 probe_libc host_
3598 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3599
3600 case $libc_type in
3601     bionic)
3602         add_compat strtod.o strtod=avpriv_strtod
3603         ;;
3604     msvcrt)
3605         add_compat strtod.o strtod=avpriv_strtod
3606         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3607                                      _snprintf=avpriv_snprintf  \
3608                                      vsnprintf=avpriv_vsnprintf
3609         ;;
3610 esac
3611
3612 # hacks for compiler/libc/os combinations
3613
3614 if enabled_all tms470 libc_glibc; then
3615     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3616     add_cppflags -D__USER_LABEL_PREFIX__=
3617     add_cppflags -D__builtin_memset=memset
3618     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3619     add_cflags   -pds=48    # incompatible redefinition of macro
3620 fi
3621
3622 if enabled_all ccc libc_glibc; then
3623     add_ldflags -Wl,-z,now  # calls to libots crash without this
3624 fi
3625
3626 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3627     add_cppflags '-I\$(SRC_PATH)/compat/float'
3628
3629 esc(){
3630     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3631 }
3632
3633 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3634
3635 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3636
3637 set_default $PATHS_LIST
3638 set_default nm
3639
3640 # we need to build at least one lib type
3641 if ! enabled_any static shared; then
3642     cat <<EOF
3643 At least one library type must be built.
3644 Specify --enable-static to build the static libraries or --enable-shared to
3645 build the shared libraries as well. To only build the shared libraries specify
3646 --disable-static in addition to --enable-shared.
3647 EOF
3648     exit 1;
3649 fi
3650
3651 die_license_disabled() {
3652     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3653 }
3654
3655 die_license_disabled gpl libcdio
3656 die_license_disabled gpl libx264
3657 die_license_disabled gpl libx265
3658 die_license_disabled gpl libxavs
3659 die_license_disabled gpl libxvid
3660 die_license_disabled gpl x11grab
3661
3662 die_license_disabled nonfree libfaac
3663 die_license_disabled nonfree libfdk_aac
3664 die_license_disabled nonfree openssl
3665
3666 die_license_disabled version3 libopencore_amrnb
3667 die_license_disabled version3 libopencore_amrwb
3668 die_license_disabled version3 libvo_aacenc
3669 die_license_disabled version3 libvo_amrwbenc
3670
3671 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3672
3673 disabled optimizations || check_cflags -fomit-frame-pointer
3674
3675 enable_weak_pic() {
3676     disabled pic && return
3677     enable pic
3678     add_cppflags -DPIC
3679     case "$target_os" in
3680     mingw*|cygwin*)
3681         ;;
3682     *)
3683         add_cflags -fPIC
3684         ;;
3685     esac
3686     add_asflags  -fPIC
3687 }
3688
3689 enabled pic && enable_weak_pic
3690
3691 check_cc <<EOF || die "Symbol mangling check failed."
3692 int ff_extern;
3693 EOF
3694 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3695 extern_prefix=${sym%%ff_extern*}
3696
3697 check_cc <<EOF && enable_weak inline_asm
3698 void foo(void) { __asm__ volatile ("" ::); }
3699 EOF
3700
3701 _restrict=
3702 for restrict_keyword in restrict __restrict__ __restrict; do
3703     check_cc <<EOF && _restrict=$restrict_keyword && break
3704 void foo(char * $restrict_keyword p);
3705 EOF
3706 done
3707
3708 check_cc <<EOF && enable pragma_deprecated
3709 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3710 EOF
3711
3712 check_cc <<EOF && enable attribute_packed
3713 struct { int x; } __attribute__((packed)) x;
3714 EOF
3715
3716 check_cc <<EOF && enable attribute_may_alias
3717 union { int x; } __attribute__((may_alias)) x;
3718 EOF
3719
3720 check_cc <<EOF || die "endian test failed"
3721 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3722 EOF
3723 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3724
3725
3726 if enabled asm; then
3727     enabled     arm         && nogas=die
3728     enabled_all ppc altivec && nogas=warn
3729     as=${gas:=$as}
3730     check_as <<EOF && enable gnu_as || \
3731         $nogas "GNU assembler not found, install gas-preprocessor"
3732 .macro m n
3733 \n: .int 0
3734 .endm
3735 m x
3736 EOF
3737 fi
3738
3739 check_inline_asm inline_asm_labels '"1:\n"'
3740
3741 if enabled aarch64; then
3742     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3743     # internal assembler in clang 3.3 does not support this instruction
3744     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3745     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3746
3747     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3748
3749 elif enabled alpha; then
3750
3751     check_cflags -mieee
3752
3753 elif enabled arm; then
3754
3755     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3756     enabled thumb && check_cflags -mthumb || check_cflags -marm
3757
3758     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3759         enable vfp_args
3760     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3761         case "${cross_prefix:-$cc}" in
3762             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3763             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3764 __asm__ (".eabi_attribute 28, 1");
3765 int main(void) { return 0; }
3766 EOF
3767         esac
3768         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3769     fi
3770
3771     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3772     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3773     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3774     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3775     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3776     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3777
3778     [ $target_os = linux ] ||
3779         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3780             $ARCH_EXT_LIST_ARM
3781
3782     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3783
3784     check_as <<EOF && enable as_dn_directive
3785 ra .dn d0.i16
3786 .unreq ra
3787 EOF
3788
3789     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3790
3791 elif enabled mips; then
3792
3793     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3794
3795 elif enabled parisc; then
3796
3797     if enabled gcc; then
3798         case $($cc -dumpversion) in
3799             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3800         esac
3801     fi
3802
3803 elif enabled ppc; then
3804
3805     enable local_aligned_8 local_aligned_16
3806
3807     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3808     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3809     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3810     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3811
3812     # AltiVec flags: The FSF version of GCC differs from the Apple version
3813     if enabled altivec; then
3814         check_cflags -maltivec -mabi=altivec &&
3815         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3816         check_cflags -faltivec
3817
3818         # check if our compiler supports Motorola AltiVec C API
3819         check_cc <<EOF || disable altivec
3820 $inc_altivec_h
3821 int main(void) {
3822     vector signed int v1 = (vector signed int) { 0 };
3823     vector signed int v2 = (vector signed int) { 1 };
3824     v1 = vec_add(v1, v2);
3825     return 0;
3826 }
3827 EOF
3828
3829         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3830     fi
3831
3832 elif enabled x86; then
3833
3834     check_builtin rdtsc    intrin.h   "__rdtsc()"
3835     check_builtin mm_empty mmintrin.h "_mm_empty()"
3836
3837     enable local_aligned_8 local_aligned_16
3838
3839     # check whether EBP is available on x86
3840     # As 'i' is stored on the stack, this program will crash
3841     # if the base pointer is used to access it because the
3842     # base pointer is cleared in the inline assembly code.
3843     check_exec_crash <<EOF && enable ebp_available
3844 volatile int i=0;
3845 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3846 return i;
3847 EOF
3848
3849     # check whether EBX is available on x86
3850     check_inline_asm ebx_available '""::"b"(0)' &&
3851         check_inline_asm ebx_available '"":::"%ebx"'
3852
3853     # check whether xmm clobbers are supported
3854     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3855
3856     # check whether binutils is new enough to compile SSSE3/MMXEXT
3857     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3858     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3859
3860     if ! disabled_any asm mmx yasm; then
3861         if check_cmd $yasmexe --version; then
3862             enabled x86_64 && yasm_extra="-m amd64"
3863             yasm_debug="-g dwarf2"
3864         elif check_cmd nasm -v; then
3865             yasmexe=nasm
3866             yasm_debug="-g -F dwarf"
3867             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3868         fi
3869
3870         YASMFLAGS="-f $objformat $yasm_extra"
3871         enabled pic               && append YASMFLAGS "-DPIC"
3872         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3873         case "$objformat" in
3874             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3875         esac
3876
3877         check_yasm "movbe ecx, [5]" && enable yasm ||
3878             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3879         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3880         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3881         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3882         check_yasm "CPU amdnop" || disable cpunop
3883     fi
3884
3885     case "$cpu" in
3886         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3887             disable fast_clz
3888         ;;
3889     esac
3890
3891 fi
3892
3893 check_ldflags -Wl,--as-needed
3894
3895 if check_func dlopen; then
3896     ldl=
3897 elif check_func dlopen -ldl; then
3898     ldl=-ldl
3899 fi
3900
3901 if ! disabled network; then
3902     check_func getaddrinfo $network_extralibs
3903     check_func getservbyport $network_extralibs
3904     check_func inet_aton $network_extralibs
3905
3906     check_type netdb.h "struct addrinfo"
3907     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3908     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3909     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3910     check_type poll.h "struct pollfd"
3911     check_type netinet/sctp.h "struct sctp_event_subscribe"
3912     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3913     check_type netinet/in.h "struct sockaddr_in6"
3914     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3915     check_type "sys/types.h sys/socket.h" socklen_t
3916
3917     # Prefer arpa/inet.h over winsock2
3918     if check_header arpa/inet.h ; then
3919         check_func closesocket
3920     elif check_header winsock2.h ; then
3921         check_func_headers winsock2.h closesocket -lws2 &&
3922             network_extralibs="-lws2" ||
3923         { check_func_headers winsock2.h closesocket -lws2_32 &&
3924             network_extralibs="-lws2_32"; } || disable winsock2_h network
3925         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3926
3927         check_type ws2tcpip.h socklen_t
3928         check_type ws2tcpip.h "struct addrinfo"
3929         check_type ws2tcpip.h "struct group_source_req"
3930         check_type ws2tcpip.h "struct ip_mreq_source"
3931         check_type ws2tcpip.h "struct ipv6_mreq"
3932         check_type winsock2.h "struct pollfd"
3933         check_struct winsock2.h "struct sockaddr" sa_len
3934         check_type ws2tcpip.h "struct sockaddr_in6"
3935         check_type ws2tcpip.h "struct sockaddr_storage"
3936     else
3937         disable network
3938     fi
3939 fi
3940
3941 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3942 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3943 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3944 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3945
3946 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3947 check_func  ${malloc_prefix}memalign            && enable memalign
3948 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3949
3950 check_func  fcntl
3951 check_func  fork
3952 check_func  gethrtime
3953 check_func  getopt
3954 check_func  getrusage
3955 check_func  gettimeofday
3956 check_func  isatty
3957 check_func  localtime_r
3958 check_func  mach_absolute_time
3959 check_func  mkstemp
3960 check_func  mmap
3961 check_func  mprotect
3962 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3963 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3964 check_func  sched_getaffinity
3965 check_func  setrlimit
3966 check_func  strerror_r
3967 check_func  strptime
3968 check_func  sysconf
3969 check_func  sysctl
3970 check_func  usleep
3971
3972 check_func_headers io.h setmode
3973 check_func_headers stdlib.h getenv
3974
3975 check_func_headers windows.h CoTaskMemFree -lole32
3976 check_func_headers windows.h GetProcessAffinityMask
3977 check_func_headers windows.h GetProcessTimes
3978 check_func_headers windows.h GetSystemTimeAsFileTime
3979 check_func_headers windows.h MapViewOfFile
3980 check_func_headers windows.h SetConsoleTextAttribute
3981 check_func_headers windows.h Sleep
3982 check_func_headers windows.h VirtualAlloc
3983
3984 check_header direct.h
3985 check_header dlfcn.h
3986 check_header dxva.h
3987 check_header dxva2api.h
3988 check_header io.h
3989 check_header mach/mach_time.h
3990 check_header malloc.h
3991 check_header poll.h
3992 check_header sys/mman.h
3993 check_header sys/param.h
3994 check_header sys/resource.h
3995 check_header sys/select.h
3996 check_header sys/time.h
3997 check_header sys/un.h
3998 check_header unistd.h
3999 check_header vdpau/vdpau.h
4000 check_header vdpau/vdpau_x11.h
4001 check_header VideoDecodeAcceleration/VDADecoder.h
4002 check_header windows.h
4003 check_header X11/extensions/XvMClib.h
4004
4005 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4006 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4007 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4008
4009 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4010
4011 if ! disabled w32threads && ! enabled pthreads; then
4012     check_func_headers "windows.h process.h" _beginthreadex &&
4013         enable w32threads || disable w32threads
4014 fi
4015
4016 # check for some common methods of building with pthread support
4017 # do this before the optional library checks as some of them require pthreads
4018 if ! disabled pthreads && ! enabled w32threads; then
4019     enable pthreads
4020     if check_func pthread_join -pthread; then
4021         add_cflags -pthread
4022         add_extralibs -pthread
4023     elif check_func pthread_join -pthreads; then
4024         add_cflags -pthreads
4025         add_extralibs -pthreads
4026     elif check_func pthread_join -lpthreadGC2; then
4027         add_extralibs -lpthreadGC2
4028     elif check_lib pthread.h pthread_join -lpthread; then
4029         :
4030     elif ! check_func pthread_join; then
4031         disable pthreads
4032     fi
4033 fi
4034
4035 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4036 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4037
4038 check_lib math.h sin -lm && LIBM="-lm"
4039 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4040
4041 atan2f_args=2
4042 ldexpf_args=2
4043 powf_args=2
4044
4045 for func in $MATH_FUNCS; do
4046     eval check_mathfunc $func \${${func}_args:-1}
4047 done
4048
4049 # these are off by default, so fail if requested and not available
4050 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4051                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4052                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4053 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4054 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init