lavc: export DV profile API used by muxer/demuxer as public
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
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       deprecated, does nothing
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 [$target_os]
226   --target-exec=CMD        command to run executables on target
227   --target-path=DIR        path to view of build directory on target
228   --target-samples=DIR     path to samples directory on target
229   --toolchain=NAME         set tool defaults according to NAME
230   --nm=NM                  use nm tool
231   --ar=AR                  use archive tool AR [$ar_default]
232   --as=AS                  use assembler AS [$as_default]
233   --cc=CC                  use C compiler CC [$cc_default]
234   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
235   --ld=LD                  use linker LD
236   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
237   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
238   --host-cc=HOSTCC         use host C compiler HOSTCC
239   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
240   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
241   --host-ld=HOSTLD         use host linker HOSTLD
242   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
243   --host-libs=HLIBS        use libs HLIBS when linking for host
244   --host-os=OS             compiler host OS [$target_os]
245   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
246   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
247   --extra-libs=ELIBS       add ELIBS [$ELIBS]
248   --extra-version=STRING   version string suffix []
249   --optflags=OPTFLAGS      override optimization-related compiler flags
250   --build-suffix=SUFFIX    library name suffix []
251   --enable-pic             build position-independent code
252   --enable-thumb           compile for Thumb instruction set
253   --enable-lto             use link-time optimization
254
255 Advanced options (experts only):
256   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
257   --disable-symver         disable symbol versioning
258   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
259   --disable-safe-bitstream-reader
260                            disable buffer boundary checking in bitreaders
261                            (faster, but may crash)
262   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
263   --enable-sram            allow use of on-chip SRAM
264
265 Optimization options (experts only):
266   --disable-asm            disable all assembly optimizations
267   --disable-altivec        disable AltiVec optimizations
268   --disable-amd3dnow       disable 3DNow! optimizations
269   --disable-amd3dnowext    disable 3DNow! extended optimizations
270   --disable-mmx            disable MMX optimizations
271   --disable-mmxext         disable MMXEXT optimizations
272   --disable-sse            disable SSE optimizations
273   --disable-sse2           disable SSE2 optimizations
274   --disable-sse3           disable SSE3 optimizations
275   --disable-ssse3          disable SSSE3 optimizations
276   --disable-sse4           disable SSE4 optimizations
277   --disable-sse42          disable SSE4.2 optimizations
278   --disable-avx            disable AVX optimizations
279   --disable-xop            disable XOP optimizations
280   --disable-fma3           disable FMA3 optimizations
281   --disable-fma4           disable FMA4 optimizations
282   --disable-avx2           disable AVX2 optimizations
283   --disable-armv5te        disable armv5te optimizations
284   --disable-armv6          disable armv6 optimizations
285   --disable-armv6t2        disable armv6t2 optimizations
286   --disable-vfp            disable VFP optimizations
287   --disable-neon           disable NEON optimizations
288   --disable-inline-asm     disable use of inline assembly
289   --disable-yasm           disable use of nasm/yasm assembly
290
291 Developer options (useful when working on Libav itself):
292   --disable-debug          disable debugging symbols
293   --enable-debug=LEVEL     set the debug level [$debuglevel]
294   --disable-optimizations  disable compiler optimizations
295   --enable-extra-warnings  enable more compiler warnings
296   --samples=PATH           location of test samples for FATE, if not set use
297                            \$LIBAV_SAMPLES at make invocation time.
298   --enable-neon-clobber-test check NEON registers for clobbering (should be
299                            used only for debugging purposes)
300   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
301                            should be used only for debugging purposes)
302   --enable-random          randomly enable/disable components
303   --disable-random
304   --enable-random=LIST     randomly enable/disable specific components or
305   --disable-random=LIST    component groups. LIST is a comma-separated list
306                            of NAME[:PROB] entries where NAME is a component
307                            (group) and PROB the probability associated with
308                            NAME (default 0.5).
309   --random-seed=VALUE      seed value for --enable/disable-random
310
311 NOTE: Object files are built at the place where configure is launched.
312 EOF
313   exit 0
314 }
315
316 quotes='""'
317
318 log(){
319     echo "$@" >> $logfile
320 }
321
322 log_file(){
323     log BEGIN $1
324     pr -n -t $1 >> $logfile
325     log END $1
326 }
327
328 echolog(){
329     log "$@"
330     echo "$@"
331 }
332
333 warn(){
334     log "WARNING: $*"
335     WARNINGS="${WARNINGS}WARNING: $*\n"
336 }
337
338 die(){
339     echolog "$@"
340     cat <<EOF
341
342 If you think configure made a mistake, make sure you are using the latest
343 version from Git.  If the latest version fails, report the problem to the
344 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
345 EOF
346     if disabled logging; then
347         cat <<EOF
348 Rerun configure with logging enabled (do not use --disable-logging), and
349 include the log this produces with your report.
350 EOF
351     else
352         cat <<EOF
353 Include the log file "$logfile" produced by configure as this will help
354 solving the problem.
355 EOF
356     fi
357     exit 1
358 }
359
360 # Avoid locale weirdness, besides we really just want to translate ASCII.
361 toupper(){
362     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
363 }
364
365 tolower(){
366     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
367 }
368
369 c_escape(){
370     echo "$*" | sed 's/["\\]/\\\0/g'
371 }
372
373 sh_quote(){
374     v=$(echo "$1" | sed "s/'/'\\\\''/g")
375     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
376     echo "$v"
377 }
378
379 cleanws(){
380     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
381 }
382
383 filter(){
384     pat=$1
385     shift
386     for v; do
387         eval "case $v in $pat) echo $v ;; esac"
388     done
389 }
390
391 filter_out(){
392     pat=$1
393     shift
394     for v; do
395         eval "case $v in $pat) ;; *) echo $v ;; esac"
396     done
397 }
398
399 map(){
400     m=$1
401     shift
402     for v; do eval $m; done
403 }
404
405 add_suffix(){
406     suffix=$1
407     shift
408     for v; do echo ${v}${suffix}; done
409 }
410
411 set_all(){
412     value=$1
413     shift
414     for var in $*; do
415         eval $var=$value
416     done
417 }
418
419 set_weak(){
420     value=$1
421     shift
422     for var; do
423         eval : \${$var:=$value}
424     done
425 }
426
427 sanitize_var_name(){
428     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
429 }
430
431 set_safe(){
432     var=$1
433     shift
434     eval $(sanitize_var_name "$var")='$*'
435 }
436
437 get_safe(){
438     eval echo \$$(sanitize_var_name "$1")
439 }
440
441 pushvar(){
442     for pvar in $*; do
443         eval level=\${${pvar}_level:=0}
444         eval ${pvar}_${level}="\$$pvar"
445         eval ${pvar}_level=$(($level+1))
446     done
447 }
448
449 popvar(){
450     for pvar in $*; do
451         eval level=\${${pvar}_level:-0}
452         test $level = 0 && continue
453         eval level=$(($level-1))
454         eval $pvar="\${${pvar}_${level}}"
455         eval ${pvar}_level=$level
456         eval unset ${pvar}_${level}
457     done
458 }
459
460 enable(){
461     set_all yes $*
462 }
463
464 disable(){
465     set_all no $*
466 }
467
468 enable_weak(){
469     set_weak yes $*
470 }
471
472 disable_weak(){
473     set_weak no $*
474 }
475
476 enable_safe(){
477     for var; do
478         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
479     done
480 }
481
482 disable_safe(){
483     for var; do
484         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
485     done
486 }
487
488 do_enable_deep(){
489     for var; do
490         enabled $var && continue
491         eval sel="\$${var}_select"
492         eval sgs="\$${var}_suggest"
493         pushvar var sgs
494         enable_deep $sel
495         popvar sgs
496         enable_deep_weak $sgs
497         popvar var
498     done
499 }
500
501 enable_deep(){
502     do_enable_deep $*
503     enable $*
504 }
505
506 enable_deep_weak(){
507     for var; do
508         disabled $var && continue
509         pushvar var
510         do_enable_deep $var
511         popvar var
512         enable_weak $var
513     done
514 }
515
516 enabled(){
517     test "${1#!}" = "$1" && op== || op=!=
518     eval test "x\$${1#!}" $op "xyes"
519 }
520
521 disabled(){
522     test "${1#!}" = "$1" && op== || op=!=
523     eval test "x\$${1#!}" $op "xno"
524 }
525
526 enabled_all(){
527     for opt; do
528         enabled $opt || return 1
529     done
530 }
531
532 disabled_all(){
533     for opt; do
534         disabled $opt || return 1
535     done
536 }
537
538 enabled_any(){
539     for opt; do
540         enabled $opt && return 0
541     done
542 }
543
544 disabled_any(){
545     for opt; do
546         disabled $opt && return 0
547     done
548     return 1
549 }
550
551 set_default(){
552     for opt; do
553         eval : \${$opt:=\$${opt}_default}
554     done
555 }
556
557 is_in(){
558     value=$1
559     shift
560     for var in $*; do
561         [ $var = $value ] && return 0
562     done
563     return 1
564 }
565
566 do_check_deps(){
567     for cfg; do
568         cfg="${cfg#!}"
569         enabled ${cfg}_checking && die "Circular dependency for $cfg."
570         disabled ${cfg}_checking && continue
571         enable ${cfg}_checking
572         append allopts $cfg
573
574         eval dep_all="\$${cfg}_deps"
575         eval dep_any="\$${cfg}_deps_any"
576         eval dep_sel="\$${cfg}_select"
577         eval dep_sgs="\$${cfg}_suggest"
578         eval dep_ifa="\$${cfg}_if"
579         eval dep_ifn="\$${cfg}_if_any"
580
581         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
582         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
583         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
584
585         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
586         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
587         enabled_all  $dep_all || disable $cfg
588         enabled_any  $dep_any || disable $cfg
589         disabled_any $dep_sel && disable $cfg
590
591         if enabled $cfg; then
592             enable_deep $dep_sel
593             enable_deep_weak $dep_sgs
594         fi
595
596         disable ${cfg}_checking
597     done
598 }
599
600 check_deps(){
601     unset allopts
602
603     do_check_deps "$@"
604
605     for cfg in $allopts; do
606         enabled $cfg || continue
607         eval dep_extralibs="\$${cfg}_extralibs"
608         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
609     done
610 }
611
612 print_config(){
613     pfx=$1
614     files=$2
615     shift 2
616     map 'eval echo "$v \${$v:-no}"' "$@" |
617     awk "BEGIN { split(\"$files\", files) }
618         {
619             c = \"$pfx\" toupper(\$1);
620             v = \$2;
621             sub(/yes/, 1, v);
622             sub(/no/,  0, v);
623             for (f in files) {
624                 file = files[f];
625                 if (file ~ /\\.h\$/) {
626                     printf(\"#define %s %d\\n\", c, v) >>file;
627                 } else if (file ~ /\\.asm\$/) {
628                     printf(\"%%define %s %d\\n\", c, v) >>file;
629                 } else if (file ~ /\\.mak\$/) {
630                     n = -v ? \"\" : \"!\";
631                     printf(\"%s%s=yes\\n\", n, c) >>file;
632                 }
633             }
634         }"
635 }
636
637 print_enabled(){
638     suf=$1
639     shift
640     for v; do
641         enabled $v && printf "%s\n" ${v%$suf};
642     done
643 }
644
645 append(){
646     var=$1
647     shift
648     eval "$var=\"\$$var $*\""
649 }
650
651 prepend(){
652     var=$1
653     shift
654     eval "$var=\"$* \$$var\""
655 }
656
657 unique(){
658     var=$1
659     uniq_list=""
660     for tok in $(eval echo \$$var); do
661         uniq_list="$(filter_out $tok $uniq_list) $tok"
662     done
663     eval "$var=\"${uniq_list}\""
664 }
665
666 add_cppflags(){
667     append CPPFLAGS "$@"
668 }
669
670 add_cflags(){
671     append CFLAGS $($cflags_filter "$@")
672 }
673
674 add_asflags(){
675     append ASFLAGS $($asflags_filter "$@")
676 }
677
678 add_ldflags(){
679     append LDFLAGS $($ldflags_filter "$@")
680 }
681
682 add_stripflags(){
683     append STRIPFLAGS "$@"
684 }
685
686 add_extralibs(){
687     prepend extralibs $($ldflags_filter "$@")
688 }
689
690 add_host_cppflags(){
691     append host_cppflags "$@"
692 }
693
694 add_host_cflags(){
695     append host_cflags $($host_cflags_filter "$@")
696 }
697
698 add_host_ldflags(){
699     append host_ldflags $($host_ldflags_filter "$@")
700 }
701
702 add_compat(){
703     append compat_objs $1
704     shift
705     map 'add_cppflags -D$v' "$@"
706 }
707
708 check_cmd(){
709     log "$@"
710     "$@" >> $logfile 2>&1
711 }
712
713 cc_o(){
714     eval printf '%s\\n' $CC_O
715 }
716
717 cc_e(){
718     eval printf '%s\\n' $CC_E
719 }
720
721 check_cc(){
722     log check_cc "$@"
723     cat > $TMPC
724     log_file $TMPC
725     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
726 }
727
728 check_cpp(){
729     log check_cpp "$@"
730     cat > $TMPC
731     log_file $TMPC
732     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
733 }
734
735 as_o(){
736     eval printf '%s\\n' $AS_O
737 }
738
739 check_as(){
740     log check_as "$@"
741     cat > $TMPS
742     log_file $TMPS
743     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
744 }
745
746 check_inline_asm(){
747     log check_inline_asm "$@"
748     name="$1"
749     code="$2"
750     shift 2
751     disable $name
752     check_cc "$@" <<EOF && enable $name
753 void foo(void){ __asm__ volatile($code); }
754 EOF
755 }
756
757 check_insn(){
758     log check_insn "$@"
759     check_inline_asm ${1}_inline "\"$2\""
760     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
761 }
762
763 check_yasm(){
764     log check_yasm "$@"
765     echo "$1" > $TMPS
766     log_file $TMPS
767     shift 1
768     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
769 }
770
771 ld_o(){
772     eval printf '%s\\n' $LD_O
773 }
774
775 check_ld(){
776     log check_ld "$@"
777     flags=$(filter_out '-l*' "$@")
778     libs=$(filter '-l*' "$@")
779     check_cc $($cflags_filter $flags) || return
780     flags=$($ldflags_filter $flags)
781     libs=$($ldflags_filter $libs)
782     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
783 }
784
785 print_include(){
786     hdr=$1
787     test "${hdr%.h}" = "${hdr}" &&
788         echo "#include $hdr"    ||
789         echo "#include <$hdr>"
790 }
791
792 check_code(){
793     log check_code "$@"
794     check=$1
795     headers=$2
796     code=$3
797     shift 3
798     {
799         for hdr in $headers; do
800             print_include $hdr
801         done
802         echo "int main(void) { $code; return 0; }"
803     } | check_$check "$@"
804 }
805
806 check_cppflags(){
807     log check_cppflags "$@"
808     check_cc "$@" <<EOF && append CPPFLAGS "$@"
809 int x;
810 EOF
811 }
812
813 test_cflags(){
814     log test_cflags "$@"
815     set -- $($cflags_filter "$@")
816     check_cc "$@" <<EOF
817 int x;
818 EOF
819 }
820
821 check_cflags(){
822     log check_cflags "$@"
823     test_cflags "$@" && add_cflags "$@"
824 }
825
826 test_ldflags(){
827     log test_ldflags "$@"
828     check_ld "$@" <<EOF
829 int main(void){ return 0; }
830 EOF
831 }
832
833 check_ldflags(){
834     log check_ldflags "$@"
835     test_ldflags "$@" && add_ldflags "$@"
836 }
837
838 test_stripflags(){
839     log test_stripflags "$@"
840     # call check_cc to get a fresh TMPO
841     check_cc <<EOF
842 int main(void) { return 0; }
843 EOF
844     check_cmd $strip $STRIPFLAGS "$@" $TMPO
845 }
846
847 check_stripflags(){
848     log check_stripflags "$@"
849     test_stripflags "$@" && add_stripflags "$@"
850 }
851
852 check_header(){
853     log check_header "$@"
854     header=$1
855     shift
856     disable_safe $header
857     check_cpp "$@" <<EOF && enable_safe $header
858 #include <$header>
859 int x;
860 EOF
861 }
862
863 check_func(){
864     log check_func "$@"
865     func=$1
866     shift
867     disable $func
868     check_ld "$@" <<EOF && enable $func
869 extern int $func();
870 int main(void){ $func(); }
871 EOF
872 }
873
874 check_mathfunc(){
875     log check_mathfunc "$@"
876     func=$1
877     narg=$2
878     shift 2
879     test $narg = 2 && args="f, g" || args="f"
880     disable $func
881     check_ld "$@" <<EOF && enable $func
882 #include <math.h>
883 float foo(float f, float g) { return $func($args); }
884 int main(void){ return 0; }
885 EOF
886 }
887
888 check_func_headers(){
889     log check_func_headers "$@"
890     headers=$1
891     funcs=$2
892     shift 2
893     {
894         for hdr in $headers; do
895             print_include $hdr
896         done
897         for func in $funcs; do
898             echo "long check_$func(void) { return (long) $func; }"
899         done
900         echo "int main(void) { return 0; }"
901     } | check_ld "$@" && enable $funcs && enable_safe $headers
902 }
903
904 check_cpp_condition(){
905     log check_cpp_condition "$@"
906     header=$1
907     condition=$2
908     shift 2
909     check_cpp "$@" <<EOF
910 #include <$header>
911 #if !($condition)
912 #error "unsatisfied condition: $condition"
913 #endif
914 EOF
915 }
916
917 check_lib(){
918     log check_lib "$@"
919     header="$1"
920     func="$2"
921     shift 2
922     check_header $header && check_func $func "$@" && add_extralibs "$@"
923 }
924
925 check_lib2(){
926     log check_lib2 "$@"
927     headers="$1"
928     funcs="$2"
929     shift 2
930     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
931 }
932
933 check_pkg_config(){
934     log check_pkg_config "$@"
935     pkg="$1"
936     headers="$2"
937     funcs="$3"
938     shift 3
939     check_cmd $pkg_config --exists --print-errors $pkg || return
940     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
941     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
942     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
943         set_safe ${pkg}_cflags $pkg_cflags   &&
944         set_safe ${pkg}_libs   $pkg_libs
945 }
946
947 check_exec(){
948     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
949 }
950
951 check_exec_crash(){
952     code=$(cat)
953
954     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
955     # are safe but may not be available everywhere.  Thus we use
956     # raise(SIGTERM) instead.  The check is run in a subshell so we
957     # can redirect the "Terminated" message from the shell.  SIGBUS
958     # is not defined by standard C so it is used conditionally.
959
960     (check_exec "$@") >> $logfile 2>&1 <<EOF
961 #include <signal.h>
962 static void sighandler(int sig){
963     raise(SIGTERM);
964 }
965 int foo(void){
966     $code
967 }
968 int (*func_ptr)(void) = foo;
969 int main(void){
970     signal(SIGILL, sighandler);
971     signal(SIGFPE, sighandler);
972     signal(SIGSEGV, sighandler);
973 #ifdef SIGBUS
974     signal(SIGBUS, sighandler);
975 #endif
976     return func_ptr();
977 }
978 EOF
979 }
980
981 check_type(){
982     log check_type "$@"
983     headers=$1
984     type=$2
985     shift 2
986     disable_safe "$type"
987     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
988 }
989
990 check_struct(){
991     log check_struct "$@"
992     headers=$1
993     struct=$2
994     member=$3
995     shift 3
996     disable_safe "${struct}_${member}"
997     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
998         enable_safe "${struct}_${member}"
999 }
1000
1001 check_builtin(){
1002     log check_builtin "$@"
1003     name=$1
1004     headers=$2
1005     builtin=$3
1006     shift 3
1007     disable "$name"
1008     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1009 }
1010
1011 check_compile_assert(){
1012     log check_compile_assert "$@"
1013     name=$1
1014     headers=$2
1015     condition=$3
1016     shift 3
1017     disable "$name"
1018     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1019 }
1020
1021 require(){
1022     name="$1"
1023     header="$2"
1024     func="$3"
1025     shift 3
1026     check_lib $header $func "$@" || die "ERROR: $name not found"
1027 }
1028
1029 require2(){
1030     name="$1"
1031     headers="$2"
1032     func="$3"
1033     shift 3
1034     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1035 }
1036
1037 require_pkg_config(){
1038     pkg="$1"
1039     check_pkg_config "$@" || die "ERROR: $pkg not found"
1040     add_cflags    $(get_safe ${pkg}_cflags)
1041     add_extralibs $(get_safe ${pkg}_libs)
1042 }
1043
1044 hostcc_e(){
1045     eval printf '%s\\n' $HOSTCC_E
1046 }
1047
1048 hostcc_o(){
1049     eval printf '%s\\n' $HOSTCC_O
1050 }
1051
1052 check_host_cc(){
1053     log check_host_cc "$@"
1054     cat > $TMPC
1055     log_file $TMPC
1056     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1057 }
1058
1059 check_host_cpp(){
1060     log check_host_cpp "$@"
1061     cat > $TMPC
1062     log_file $TMPC
1063     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1064 }
1065
1066 check_host_cppflags(){
1067     log check_host_cppflags "$@"
1068     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1069 int x;
1070 EOF
1071 }
1072
1073 check_host_cflags(){
1074     log check_host_cflags "$@"
1075     set -- $($host_cflags_filter "$@")
1076     check_host_cc "$@" <<EOF && append host_cflags "$@"
1077 int x;
1078 EOF
1079 }
1080
1081 check_host_cpp_condition(){
1082     log check_host_cpp_condition "$@"
1083     header=$1
1084     condition=$2
1085     shift 2
1086     check_host_cpp "$@" <<EOF
1087 #include <$header>
1088 #if !($condition)
1089 #error "unsatisfied condition: $condition"
1090 #endif
1091 EOF
1092 }
1093
1094 apply(){
1095     file=$1
1096     shift
1097     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1098 }
1099
1100 cp_if_changed(){
1101     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1102     mkdir -p "$(dirname $2)"
1103     $cp_f "$1" "$2"
1104 }
1105
1106 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1107 # system-dependent things.
1108
1109 COMPONENT_LIST="
1110     bsfs
1111     decoders
1112     demuxers
1113     encoders
1114     filters
1115     hwaccels
1116     indevs
1117     muxers
1118     outdevs
1119     parsers
1120     protocols
1121 "
1122
1123 EXAMPLE_LIST="
1124     avcodec_example
1125     filter_audio_example
1126     metadata_example
1127     output_example
1128     transcode_aac_example
1129 "
1130
1131 EXTERNAL_LIBRARY_LIST="
1132     avisynth
1133     bzlib
1134     frei0r
1135     gnutls
1136     libbs2b
1137     libcdio
1138     libdc1394
1139     libfaac
1140     libfdk_aac
1141     libfontconfig
1142     libfreetype
1143     libgsm
1144     libilbc
1145     libmp3lame
1146     libopencore_amrnb
1147     libopencore_amrwb
1148     libopencv
1149     libopenjpeg
1150     libopus
1151     libpulse
1152     librtmp
1153     libschroedinger
1154     libspeex
1155     libtheora
1156     libtwolame
1157     libvo_aacenc
1158     libvo_amrwbenc
1159     libvorbis
1160     libvpx
1161     libwavpack
1162     libwebp
1163     libx264
1164     libx265
1165     libxavs
1166     libxvid
1167     openssl
1168     x11grab
1169     zlib
1170 "
1171
1172 FEATURE_LIST="
1173     gray
1174     hardcoded_tables
1175     runtime_cpudetect
1176     safe_bitstream_reader
1177     shared
1178     small
1179     sram
1180     static
1181     swscale_alpha
1182 "
1183
1184 HWACCEL_LIST="
1185     dxva2
1186     vaapi
1187     vda
1188     vdpau
1189 "
1190
1191 LIBRARY_LIST="
1192     avcodec
1193     avdevice
1194     avfilter
1195     avformat
1196     avresample
1197     avutil
1198     swscale
1199 "
1200
1201 LICENSE_LIST="
1202     gpl
1203     nonfree
1204     version3
1205 "
1206
1207 PROGRAM_LIST="
1208     avconv
1209     avplay
1210     avprobe
1211 "
1212
1213 SUBSYSTEM_LIST="
1214     dct
1215     doc
1216     error_resilience
1217     fft
1218     lsp
1219     lzo
1220     mdct
1221     network
1222     rdft
1223 "
1224
1225 CONFIG_LIST="
1226     $COMPONENT_LIST
1227     $EXAMPLE_LIST
1228     $EXTERNAL_LIBRARY_LIST
1229     $FEATURE_LIST
1230     $HWACCEL_LIST
1231     $LICENSE_LIST
1232     $LIBRARY_LIST
1233     $PROGRAM_LIST
1234     $SUBSYSTEM_LIST
1235     memalign_hack
1236     neon_clobber_test
1237     pic
1238     pod2man
1239     texi2html
1240     thumb
1241     xmm_clobber_test
1242 "
1243
1244 THREADS_LIST="
1245     pthreads
1246     w32threads
1247 "
1248
1249 ATOMICS_LIST="
1250     atomics_gcc
1251     atomics_suncc
1252     atomics_win32
1253 "
1254
1255 ARCH_LIST="
1256     aarch64
1257     alpha
1258     arm
1259     avr32
1260     avr32_ap
1261     avr32_uc
1262     bfin
1263     ia64
1264     m68k
1265     mips
1266     mips64
1267     parisc
1268     ppc
1269     ppc64
1270     s390
1271     sh4
1272     sparc
1273     sparc64
1274     tilegx
1275     tilepro
1276     tomi
1277     x86
1278     x86_32
1279     x86_64
1280 "
1281
1282 ARCH_EXT_LIST_ARM="
1283     armv5te
1284     armv6
1285     armv6t2
1286     armv8
1287     neon
1288     vfp
1289     vfpv3
1290 "
1291
1292 ARCH_EXT_LIST_X86_SIMD="
1293     amd3dnow
1294     amd3dnowext
1295     avx
1296     avx2
1297     fma3
1298     fma4
1299     mmx
1300     mmxext
1301     sse
1302     sse2
1303     sse3
1304     sse4
1305     sse42
1306     ssse3
1307     xop
1308 "
1309
1310 ARCH_EXT_LIST_PPC="
1311     altivec
1312     dcbzl
1313     ldbrx
1314     ppc4xx
1315 "
1316
1317 ARCH_EXT_LIST_X86="
1318     $ARCH_EXT_LIST_X86_SIMD
1319     cpunop
1320     i686
1321 "
1322
1323 ARCH_EXT_LIST="
1324     $ARCH_EXT_LIST_ARM
1325     $ARCH_EXT_LIST_PPC
1326     $ARCH_EXT_LIST_X86
1327     loongson
1328     vis
1329 "
1330
1331 ARCH_FEATURES="
1332     aligned_stack
1333     fast_64bit
1334     fast_clz
1335     fast_cmov
1336     local_aligned_8
1337     local_aligned_16
1338 "
1339
1340 BUILTIN_LIST="
1341     atomic_cas_ptr
1342     machine_rw_barrier
1343     MemoryBarrier
1344     mm_empty
1345     rdtsc
1346     sync_val_compare_and_swap
1347 "
1348 HAVE_LIST_CMDLINE="
1349     inline_asm
1350     symver
1351     yasm
1352 "
1353
1354 HAVE_LIST_PUB="
1355     bigendian
1356     fast_unaligned
1357 "
1358
1359 HEADERS_LIST="
1360     alsa_asoundlib_h
1361     altivec_h
1362     arpa_inet_h
1363     cdio_paranoia_h
1364     cdio_paranoia_paranoia_h
1365     dev_bktr_ioctl_bt848_h
1366     dev_bktr_ioctl_meteor_h
1367     dev_ic_bt8xx_h
1368     dev_video_bktr_ioctl_bt848_h
1369     dev_video_meteor_ioctl_meteor_h
1370     direct_h
1371     dlfcn_h
1372     dxva_h
1373     gsm_h
1374     io_h
1375     mach_mach_time_h
1376     machine_ioctl_bt848_h
1377     machine_ioctl_meteor_h
1378     malloc_h
1379     poll_h
1380     sndio_h
1381     soundcard_h
1382     sys_mman_h
1383     sys_param_h
1384     sys_resource_h
1385     sys_select_h
1386     sys_soundcard_h
1387     sys_time_h
1388     sys_un_h
1389     sys_videoio_h
1390     unistd_h
1391     windows_h
1392     winsock2_h
1393 "
1394
1395 MATH_FUNCS="
1396     atanf
1397     atan2f
1398     cbrtf
1399     cosf
1400     exp2
1401     exp2f
1402     expf
1403     isinf
1404     isnan
1405     ldexpf
1406     llrint
1407     llrintf
1408     log2
1409     log2f
1410     log10f
1411     lrint
1412     lrintf
1413     powf
1414     rint
1415     round
1416     roundf
1417     sinf
1418     trunc
1419     truncf
1420 "
1421
1422 SYSTEM_FUNCS="
1423     aligned_malloc
1424     closesocket
1425     CommandLineToArgvW
1426     CoTaskMemFree
1427     CryptGenRandom
1428     dlopen
1429     fcntl
1430     flt_lim
1431     fork
1432     getaddrinfo
1433     gethrtime
1434     getopt
1435     GetProcessAffinityMask
1436     GetProcessMemoryInfo
1437     GetProcessTimes
1438     getrusage
1439     getservbyport
1440     GetSystemTimeAsFileTime
1441     gettimeofday
1442     inet_aton
1443     isatty
1444     jack_port_get_latency_range
1445     localtime_r
1446     mach_absolute_time
1447     MapViewOfFile
1448     memalign
1449     mkstemp
1450     mmap
1451     mprotect
1452     nanosleep
1453     posix_memalign
1454     sched_getaffinity
1455     SetConsoleTextAttribute
1456     setmode
1457     setrlimit
1458     Sleep
1459     strerror_r
1460     strptime
1461     sysconf
1462     sysctl
1463     usleep
1464     VirtualAlloc
1465 "
1466
1467 TOOLCHAIN_FEATURES="
1468     as_dn_directive
1469     as_func
1470     asm_mod_q
1471     attribute_may_alias
1472     attribute_packed
1473     ebp_available
1474     ebx_available
1475     gnu_as
1476     ibm_asm
1477     inline_asm_labels
1478     pragma_deprecated
1479     symver_asm_label
1480     symver_gnu_asm
1481     vfp_args
1482     xform_asm
1483     xmm_clobbers
1484 "
1485
1486 TYPES_LIST="
1487     socklen_t
1488     struct_addrinfo
1489     struct_group_source_req
1490     struct_ip_mreq_source
1491     struct_ipv6_mreq
1492     struct_pollfd
1493     struct_rusage_ru_maxrss
1494     struct_sockaddr_in6
1495     struct_sockaddr_sa_len
1496     struct_sockaddr_storage
1497     struct_v4l2_frmivalenum_discrete
1498 "
1499
1500 HAVE_LIST="
1501     $ARCH_EXT_LIST
1502     $(add_suffix _external $ARCH_EXT_LIST)
1503     $(add_suffix _inline   $ARCH_EXT_LIST)
1504     $ARCH_FEATURES
1505     $ATOMICS_LIST
1506     $BUILTIN_LIST
1507     $HAVE_LIST_CMDLINE
1508     $HAVE_LIST_PUB
1509     $HEADERS_LIST
1510     $MATH_FUNCS
1511     $SYSTEM_FUNCS
1512     $THREADS_LIST
1513     $TOOLCHAIN_FEATURES
1514     $TYPES_LIST
1515     atomics_native
1516     dos_paths
1517     dxva2_lib
1518     libc_msvcrt
1519     libdc1394_1
1520     libdc1394_2
1521     sdl
1522     threads
1523     vdpau_x11
1524     xlib
1525 "
1526
1527 # options emitted with CONFIG_ prefix but not available on the command line
1528 CONFIG_EXTRA="
1529     aandcttables
1530     ac3dsp
1531     audio_frame_queue
1532     audiodsp
1533     blockdsp
1534     bswapdsp
1535     cabac
1536     dsputil
1537     dvprofile
1538     fdctdsp
1539     gcrypt
1540     golomb
1541     gplv3
1542     h263dsp
1543     h264chroma
1544     h264dsp
1545     h264pred
1546     h264qpel
1547     hpeldsp
1548     huffman
1549     huffyuvdsp
1550     huffyuvencdsp
1551     idctdsp
1552     intrax8
1553     lgplv3
1554     lpc
1555     mpeg_er
1556     mpegaudio
1557     mpegaudiodsp
1558     mpegvideo
1559     mpegvideoenc
1560     nettle
1561     qpeldsp
1562     rangecoder
1563     riffdec
1564     riffenc
1565     rtpdec
1566     rtpenc_chain
1567     sinewin
1568     tpeldsp
1569     videodsp
1570     vp3dsp
1571 "
1572
1573 CMDLINE_SELECT="
1574     $ARCH_EXT_LIST
1575     $CONFIG_LIST
1576     $HAVE_LIST_CMDLINE
1577     $THREADS_LIST
1578     asm
1579     cross_compile
1580     debug
1581     extra_warnings
1582     logging
1583     lto
1584     optimizations
1585 "
1586
1587 PATHS_LIST="
1588     bindir
1589     datadir
1590     docdir
1591     incdir
1592     libdir
1593     mandir
1594     prefix
1595     shlibdir
1596 "
1597
1598 CMDLINE_SET="
1599     $PATHS_LIST
1600     ar
1601     arch
1602     as
1603     build_suffix
1604     cc
1605     cpu
1606     cross_prefix
1607     dep_cc
1608     extra_version
1609     host_cc
1610     host_cflags
1611     host_ld
1612     host_ldflags
1613     host_libs
1614     host_os
1615     ld
1616     logfile
1617     malloc_prefix
1618     nm
1619     optflags
1620     pkg_config
1621     pkg_config_flags
1622     random_seed
1623     samples
1624     sysinclude
1625     sysroot
1626     target_exec
1627     target_os
1628     target_path
1629     target_samples
1630     toolchain
1631 "
1632
1633 CMDLINE_APPEND="
1634     extra_cflags
1635     host_cppflags
1636 "
1637
1638 # code dependency declarations
1639
1640 # architecture extensions
1641
1642 armv5te_deps="arm"
1643 armv6_deps="arm"
1644 armv6t2_deps="arm"
1645 armv8_deps="aarch64"
1646 neon_deps_any="aarch64 arm"
1647 vfp_deps_any="aarch64 arm"
1648 vfpv3_deps="vfp"
1649
1650 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1651
1652 altivec_deps="ppc"
1653 ppc4xx_deps="ppc"
1654
1655 cpunop_deps="i686"
1656 x86_64_select="i686"
1657 x86_64_suggest="fast_cmov"
1658
1659 amd3dnow_deps="mmx"
1660 amd3dnowext_deps="amd3dnow"
1661 i686_deps="x86"
1662 mmx_deps="x86"
1663 mmxext_deps="mmx"
1664 sse_deps="mmxext"
1665 sse2_deps="sse"
1666 sse3_deps="sse2"
1667 ssse3_deps="sse3"
1668 sse4_deps="ssse3"
1669 sse42_deps="sse4"
1670 avx_deps="sse42"
1671 xop_deps="avx"
1672 fma3_deps="avx"
1673 fma4_deps="avx"
1674 avx2_deps="avx"
1675
1676 mmx_external_deps="yasm"
1677 mmx_inline_deps="inline_asm"
1678 mmx_suggest="mmx_external mmx_inline"
1679
1680 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1681     eval dep=\$${ext}_deps
1682     eval ${ext}_external_deps='"${dep}_external"'
1683     eval ${ext}_inline_deps='"${dep}_inline"'
1684     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1685 done
1686
1687 aligned_stack_if_any="aarch64 ppc x86"
1688 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1689 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1690 fast_unaligned_if_any="aarch64 ppc x86"
1691
1692 need_memalign="altivec neon sse"
1693
1694 # system capabilities
1695 log2_deps="!libc_msvcrt"
1696
1697 symver_if_any="symver_asm_label symver_gnu_asm"
1698
1699 # threading support
1700 atomics_gcc_if="sync_val_compare_and_swap"
1701 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1702 atomics_win32_if="MemoryBarrier"
1703 atomics_native_if_any="$ATOMICS_LIST"
1704 w32threads_deps="atomics_native"
1705 threads_if_any="$THREADS_LIST"
1706
1707 # subsystems
1708 dct_select="rdft"
1709 dsputil_select="fdctdsp idctdsp"
1710 error_resilience_select="dsputil"
1711 intrax8_select="error_resilience"
1712 mdct_select="fft"
1713 rdft_select="fft"
1714 mpeg_er_select="error_resilience"
1715 mpegaudio_select="mpegaudiodsp"
1716 mpegaudiodsp_select="dct"
1717 mpegvideo_select="blockdsp dsputil hpeldsp idctdsp videodsp"
1718 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
1719
1720 # decoders / encoders
1721 aac_decoder_select="mdct sinewin"
1722 aac_encoder_select="audio_frame_queue mdct sinewin"
1723 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1724 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
1725 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
1726 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
1727 aic_decoder_select="golomb idctdsp"
1728 alac_encoder_select="lpc"
1729 als_decoder_select="bswapdsp"
1730 amrnb_decoder_select="lsp"
1731 amrwb_decoder_select="lsp"
1732 amv_decoder_select="sp5x_decoder"
1733 ape_decoder_select="bswapdsp"
1734 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1735 asv1_encoder_select="bswapdsp dsputil fdctdsp"
1736 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1737 asv2_encoder_select="bswapdsp dsputil fdctdsp"
1738 atrac1_decoder_select="mdct sinewin"
1739 atrac3_decoder_select="mdct"
1740 atrac3p_decoder_select="mdct sinewin"
1741 bink_decoder_select="blockdsp hpeldsp"
1742 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1743 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1744 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1745 cllc_decoder_select="bswapdsp"
1746 comfortnoise_encoder_select="lpc"
1747 cook_decoder_select="audiodsp mdct sinewin"
1748 cscd_decoder_select="lzo"
1749 cscd_decoder_suggest="zlib"
1750 dca_decoder_select="mdct"
1751 dnxhd_decoder_select="blockdsp idctdsp"
1752 dnxhd_encoder_select="aandcttables blockdsp dsputil fdctdsp idctdsp mpegvideoenc"
1753 dvvideo_decoder_select="dvprofile idctdsp"
1754 dvvideo_encoder_select="dsputil dvprofile fdctdsp"
1755 dxa_decoder_deps="zlib"
1756 eac3_decoder_select="ac3_decoder"
1757 eac3_encoder_select="ac3_encoder"
1758 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1759 eatgq_decoder_select="aandcttables idctdsp"
1760 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1761 exr_decoder_deps="zlib"
1762 ffv1_decoder_select="golomb rangecoder"
1763 ffv1_encoder_select="rangecoder"
1764 ffvhuff_decoder_select="huffyuv_decoder"
1765 ffvhuff_encoder_select="huffyuv_encoder"
1766 fic_decoder_select="golomb"
1767 flac_decoder_select="golomb"
1768 flac_encoder_select="bswapdsp golomb lpc"
1769 flashsv_decoder_deps="zlib"
1770 flashsv_encoder_deps="zlib"
1771 flashsv2_decoder_deps="zlib"
1772 flv_decoder_select="h263_decoder"
1773 flv_encoder_select="h263_encoder"
1774 fourxm_decoder_select="blockdsp bswapdsp"
1775 fraps_decoder_select="bswapdsp huffman"
1776 g2m_decoder_deps="zlib"
1777 g2m_decoder_select="blockdsp idctdsp"
1778 h261_decoder_select="mpeg_er mpegvideo"
1779 h261_encoder_select="aandcttables mpegvideoenc"
1780 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1781 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1782 h263i_decoder_select="h263_decoder"
1783 h263p_encoder_select="h263_encoder"
1784 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1785 h264_decoder_suggest="error_resilience"
1786 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1787 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1788 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1789 iac_decoder_select="imc_decoder"
1790 imc_decoder_select="bswapdsp fft mdct sinewin"
1791 indeo3_decoder_select="hpeldsp"
1792 interplay_video_decoder_select="hpeldsp"
1793 jpegls_decoder_select="golomb mjpeg_decoder"
1794 jpegls_encoder_select="golomb"
1795 jv_decoder_select="blockdsp"
1796 lagarith_decoder_select="huffyuvdsp"
1797 ljpeg_encoder_select="aandcttables idctdsp"
1798 loco_decoder_select="golomb"
1799 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1800 metasound_decoder_select="lsp mdct sinewin"
1801 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1802 mjpeg_decoder_select="blockdsp hpeldsp idctdsp"
1803 mjpeg_encoder_select="aandcttables mpegvideoenc"
1804 mjpegb_decoder_select="mjpeg_decoder"
1805 mlp_decoder_select="mlp_parser"
1806 motionpixels_decoder_select="bswapdsp"
1807 mp1_decoder_select="mpegaudio"
1808 mp1float_decoder_select="mpegaudio"
1809 mp2_decoder_select="mpegaudio"
1810 mp2float_decoder_select="mpegaudio"
1811 mp3_decoder_select="mpegaudio"
1812 mp3adu_decoder_select="mpegaudio"
1813 mp3adufloat_decoder_select="mpegaudio"
1814 mp3float_decoder_select="mpegaudio"
1815 mp3on4_decoder_select="mpegaudio"
1816 mp3on4float_decoder_select="mpegaudio"
1817 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1818 mpc8_decoder_select="mpegaudiodsp"
1819 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1820 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1821 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1822 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1823 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1824 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1825 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1826 mpeg4_encoder_select="h263_encoder"
1827 msmpeg4v1_decoder_select="h263_decoder"
1828 msmpeg4v2_decoder_select="h263_decoder"
1829 msmpeg4v2_encoder_select="h263_encoder"
1830 msmpeg4v3_decoder_select="h263_decoder"
1831 msmpeg4v3_encoder_select="h263_encoder"
1832 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1833 mxpeg_decoder_select="mjpeg_decoder"
1834 nellymoser_decoder_select="mdct sinewin"
1835 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1836 nuv_decoder_select="idctdsp lzo"
1837 on2avc_decoder_select="mdct"
1838 opus_decoder_deps="avresample"
1839 png_decoder_deps="zlib"
1840 png_encoder_deps="zlib"
1841 png_encoder_select="huffyuvencdsp"
1842 prores_decoder_select="idctdsp"
1843 prores_encoder_select="fdctdsp"
1844 qcelp_decoder_select="lsp"
1845 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1846 ra_144_encoder_select="audio_frame_queue lpc"
1847 ralf_decoder_select="golomb"
1848 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1849 rv10_encoder_select="h263_encoder"
1850 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1851 rv20_encoder_select="h263_encoder"
1852 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1853 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1854 shorten_decoder_select="golomb"
1855 sipr_decoder_select="lsp"
1856 sp5x_decoder_select="mjpeg_decoder"
1857 svq1_decoder_select="hpeldsp"
1858 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1859 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1860 svq3_decoder_suggest="zlib"
1861 tak_decoder_select="audiodsp"
1862 theora_decoder_select="vp3_decoder"
1863 thp_decoder_select="mjpeg_decoder"
1864 tiff_decoder_suggest="zlib"
1865 tiff_encoder_suggest="zlib"
1866 truehd_decoder_select="mlp_decoder"
1867 truemotion2_decoder_select="bswapdsp"
1868 truespeech_decoder_select="bswapdsp"
1869 tscc_decoder_deps="zlib"
1870 twinvq_decoder_select="mdct lsp sinewin"
1871 utvideo_decoder_select="bswapdsp"
1872 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1873 vble_decoder_select="huffyuvdsp"
1874 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
1875 vc1image_decoder_select="vc1_decoder"
1876 vorbis_decoder_select="mdct"
1877 vorbis_encoder_select="mdct"
1878 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1879 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1880 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1881 vp6a_decoder_select="vp6_decoder"
1882 vp6f_decoder_select="vp6_decoder"
1883 vp7_decoder_select="h264pred videodsp"
1884 vp8_decoder_select="h264pred videodsp"
1885 vp9_decoder_select="videodsp"
1886 webp_decoder_select="vp8_decoder"
1887 wmapro_decoder_select="mdct sinewin"
1888 wmav1_decoder_select="mdct sinewin"
1889 wmav1_encoder_select="mdct sinewin"
1890 wmav2_decoder_select="mdct sinewin"
1891 wmav2_encoder_select="mdct sinewin"
1892 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1893 wmv1_decoder_select="h263_decoder"
1894 wmv1_encoder_select="h263_encoder"
1895 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1896 wmv2_encoder_select="h263_encoder"
1897 wmv3_decoder_select="vc1_decoder"
1898 wmv3image_decoder_select="wmv3_decoder"
1899 zerocodec_decoder_deps="zlib"
1900 zlib_decoder_deps="zlib"
1901 zlib_encoder_deps="zlib"
1902 zmbv_decoder_deps="zlib"
1903 zmbv_encoder_deps="zlib"
1904
1905 # hardware accelerators
1906 dxva2_deps="dxva2api_h"
1907 vaapi_deps="va_va_h"
1908 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1909 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1910 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1911
1912 h263_vaapi_hwaccel_deps="vaapi"
1913 h263_vaapi_hwaccel_select="h263_decoder"
1914 h263_vdpau_hwaccel_deps="vdpau"
1915 h263_vdpau_hwaccel_select="h263_decoder"
1916 h264_dxva2_hwaccel_deps="dxva2"
1917 h264_dxva2_hwaccel_select="h264_decoder"
1918 h264_vaapi_hwaccel_deps="vaapi"
1919 h264_vaapi_hwaccel_select="h264_decoder"
1920 h264_vda_hwaccel_deps="vda"
1921 h264_vda_hwaccel_select="h264_decoder"
1922 h264_vda_old_hwaccel_deps="vda"
1923 h264_vda_old_hwaccel_select="h264_decoder"
1924 h264_vdpau_hwaccel_deps="vdpau"
1925 h264_vdpau_hwaccel_select="h264_decoder"
1926 mpeg1_vdpau_hwaccel_deps="vdpau"
1927 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1928 mpeg2_dxva2_hwaccel_deps="dxva2"
1929 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1930 mpeg2_vaapi_hwaccel_deps="vaapi"
1931 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1932 mpeg2_vdpau_hwaccel_deps="vdpau"
1933 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1934 mpeg4_vaapi_hwaccel_deps="vaapi"
1935 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1936 mpeg4_vdpau_hwaccel_deps="vdpau"
1937 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1938 vc1_dxva2_hwaccel_deps="dxva2"
1939 vc1_dxva2_hwaccel_select="vc1_decoder"
1940 vc1_vaapi_hwaccel_deps="vaapi"
1941 vc1_vaapi_hwaccel_select="vc1_decoder"
1942 vc1_vdpau_hwaccel_deps="vdpau"
1943 vc1_vdpau_hwaccel_select="vc1_decoder"
1944 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1945 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1946 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1947
1948 # parsers
1949 h264_parser_select="h264_decoder"
1950 mpegvideo_parser_select="mpegvideo"
1951 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
1952 vc1_parser_select="mpegvideo"
1953
1954 # external libraries
1955 libfaac_encoder_deps="libfaac"
1956 libfaac_encoder_select="audio_frame_queue"
1957 libfdk_aac_decoder_deps="libfdk_aac"
1958 libfdk_aac_encoder_deps="libfdk_aac"
1959 libfdk_aac_encoder_select="audio_frame_queue"
1960 libgsm_decoder_deps="libgsm"
1961 libgsm_encoder_deps="libgsm"
1962 libgsm_ms_decoder_deps="libgsm"
1963 libgsm_ms_encoder_deps="libgsm"
1964 libilbc_decoder_deps="libilbc"
1965 libilbc_encoder_deps="libilbc"
1966 libmp3lame_encoder_deps="libmp3lame"
1967 libmp3lame_encoder_select="audio_frame_queue"
1968 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1969 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1970 libopencore_amrnb_encoder_select="audio_frame_queue"
1971 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1972 libopenjpeg_decoder_deps="libopenjpeg"
1973 libopenjpeg_encoder_deps="libopenjpeg"
1974 libopus_decoder_deps="libopus"
1975 libopus_encoder_deps="libopus"
1976 libopus_encoder_select="audio_frame_queue"
1977 libschroedinger_decoder_deps="libschroedinger"
1978 libschroedinger_encoder_deps="libschroedinger"
1979 libspeex_decoder_deps="libspeex"
1980 libspeex_encoder_deps="libspeex"
1981 libspeex_encoder_select="audio_frame_queue"
1982 libtheora_encoder_deps="libtheora"
1983 libtwolame_encoder_deps="libtwolame"
1984 libvo_aacenc_encoder_deps="libvo_aacenc"
1985 libvo_aacenc_encoder_select="audio_frame_queue"
1986 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1987 libvorbis_encoder_deps="libvorbis"
1988 libvorbis_encoder_select="audio_frame_queue"
1989 libvpx_vp8_decoder_deps="libvpx"
1990 libvpx_vp8_encoder_deps="libvpx"
1991 libvpx_vp9_decoder_deps="libvpx"
1992 libvpx_vp9_encoder_deps="libvpx"
1993 libwavpack_encoder_deps="libwavpack"
1994 libwebp_encoder_deps="libwebp"
1995 libx264_encoder_deps="libx264"
1996 libx265_encoder_deps="libx265"
1997 libxavs_encoder_deps="libxavs"
1998 libxvid_encoder_deps="libxvid"
1999
2000 # demuxers / muxers
2001 ac3_demuxer_select="ac3_parser"
2002 asf_demuxer_select="riffdec"
2003 asf_muxer_select="riffenc"
2004 asf_stream_muxer_select="asf_muxer"
2005 avi_demuxer_select="riffdec"
2006 avi_muxer_select="riffenc"
2007 avisynth_demuxer_deps="avisynth"
2008 avisynth_demuxer_select="riffdec"
2009 caf_demuxer_select="riffdec"
2010 dirac_demuxer_select="dirac_parser"
2011 dv_demuxer_select="dvprofile"
2012 dv_muxer_select="dvprofile"
2013 dxa_demuxer_select="riffdec"
2014 eac3_demuxer_select="ac3_parser"
2015 f4v_muxer_select="mov_muxer"
2016 flac_demuxer_select="flac_parser"
2017 hds_muxer_select="flv_muxer"
2018 hls_muxer_select="mpegts_muxer"
2019 ipod_muxer_select="mov_muxer"
2020 ismv_muxer_select="mov_muxer"
2021 matroska_audio_muxer_select="matroska_muxer"
2022 matroska_demuxer_select="riffdec"
2023 matroska_demuxer_suggest="bzlib lzo zlib"
2024 matroska_muxer_select="riffenc"
2025 mmf_muxer_select="riffenc"
2026 mov_demuxer_select="riffdec"
2027 mov_demuxer_suggest="zlib"
2028 mov_muxer_select="riffenc rtpenc_chain"
2029 mp3_demuxer_select="mpegaudio_parser"
2030 mp4_muxer_select="mov_muxer"
2031 mpegts_muxer_select="adts_muxer latm_muxer"
2032 mpegtsraw_demuxer_select="mpegts_demuxer"
2033 mxf_d10_muxer_select="mxf_muxer"
2034 nut_muxer_select="riffenc"
2035 nuv_demuxer_select="riffdec"
2036 ogg_demuxer_select="golomb"
2037 psp_muxer_select="mov_muxer"
2038 rtp_demuxer_select="sdp_demuxer"
2039 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2040 rtsp_demuxer_select="http_protocol rtpdec"
2041 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2042 sap_demuxer_select="sdp_demuxer"
2043 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2044 sdp_demuxer_select="rtpdec"
2045 smoothstreaming_muxer_select="ismv_muxer"
2046 spdif_muxer_select="aac_parser"
2047 tak_demuxer_select="tak_parser"
2048 tg2_muxer_select="mov_muxer"
2049 tgp_muxer_select="mov_muxer"
2050 w64_demuxer_select="wav_demuxer"
2051 wav_demuxer_select="riffdec"
2052 wav_muxer_select="riffenc"
2053 webm_muxer_select="riffenc"
2054 wtv_demuxer_select="riffdec"
2055 xmv_demuxer_select="riffdec"
2056 xwma_demuxer_select="riffdec"
2057
2058 # indevs / outdevs
2059 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2060 alsa_outdev_deps="alsa_asoundlib_h"
2061 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2062 dv1394_indev_deps="dv1394"
2063 dv1394_indev_select="dv_demuxer"
2064 fbdev_indev_deps="linux_fb_h"
2065 jack_indev_deps="jack_jack_h pthreads"
2066 libcdio_indev_deps="libcdio"
2067 libdc1394_indev_deps="libdc1394"
2068 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2069 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2070 pulse_indev_deps="libpulse"
2071 sndio_indev_deps="sndio_h"
2072 sndio_outdev_deps="sndio_h"
2073 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2074 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2075 vfwcap_indev_extralibs="-lavicap32"
2076 x11grab_indev_deps="x11grab XShmCreateImage"
2077
2078 # protocols
2079 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2080 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2081 ffrtmpcrypt_protocol_select="tcp_protocol"
2082 ffrtmphttp_protocol_deps="!librtmp_protocol"
2083 ffrtmphttp_protocol_select="http_protocol"
2084 gopher_protocol_select="network"
2085 http_protocol_select="tcp_protocol"
2086 httpproxy_protocol_select="tcp_protocol"
2087 https_protocol_select="tls_protocol"
2088 librtmp_protocol_deps="librtmp"
2089 librtmpe_protocol_deps="librtmp"
2090 librtmps_protocol_deps="librtmp"
2091 librtmpt_protocol_deps="librtmp"
2092 librtmpte_protocol_deps="librtmp"
2093 mmsh_protocol_select="http_protocol"
2094 mmst_protocol_select="network"
2095 rtmp_protocol_deps="!librtmp_protocol"
2096 rtmp_protocol_select="tcp_protocol"
2097 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2098 rtmps_protocol_deps="!librtmp_protocol"
2099 rtmps_protocol_select="tls_protocol"
2100 rtmpt_protocol_select="ffrtmphttp_protocol"
2101 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2102 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2103 rtp_protocol_select="udp_protocol"
2104 sctp_protocol_deps="struct_sctp_event_subscribe"
2105 sctp_protocol_select="network"
2106 srtp_protocol_select="rtp_protocol"
2107 tcp_protocol_select="network"
2108 tls_protocol_deps_any="openssl gnutls"
2109 tls_protocol_select="tcp_protocol"
2110 udp_protocol_select="network"
2111 unix_protocol_deps="sys_un_h"
2112 unix_protocol_select="network"
2113
2114 # filters
2115 blackframe_filter_deps="gpl"
2116 boxblur_filter_deps="gpl"
2117 bs2b_filter_deps="libbs2b"
2118 cropdetect_filter_deps="gpl"
2119 delogo_filter_deps="gpl"
2120 drawtext_filter_deps="libfreetype"
2121 frei0r_filter_deps="frei0r dlopen"
2122 frei0r_filter_extralibs='$ldl'
2123 frei0r_src_filter_deps="frei0r dlopen"
2124 frei0r_src_filter_extralibs='$ldl'
2125 hqdn3d_filter_deps="gpl"
2126 interlace_filter_deps="gpl"
2127 ocv_filter_deps="libopencv"
2128 resample_filter_deps="avresample"
2129 scale_filter_deps="swscale"
2130
2131 # examples
2132 avcodec_example_deps="avcodec avutil"
2133 filter_audio_example_deps="avfilter avutil"
2134 metadata_example_deps="avformat avutil"
2135 output_example_deps="avcodec avformat avutil swscale"
2136 transcode_aac_example_deps="avcodec avformat avresample"
2137
2138 # libraries, in linking order
2139 avcodec_deps="avutil"
2140 avdevice_deps="avformat avcodec avutil"
2141 avfilter_deps="avutil"
2142 avformat_deps="avcodec avutil"
2143 avresample_deps="avutil"
2144 swscale_deps="avutil"
2145
2146 # programs
2147 avconv_deps="avcodec avfilter avformat avresample swscale"
2148 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2149                fps_filter null_filter resample_filter scale_filter
2150                setpts_filter trim_filter"
2151 avplay_deps="avcodec avformat avresample swscale sdl"
2152 avplay_libs='$sdl_libs'
2153 avplay_select="rdft"
2154 avprobe_deps="avcodec avformat"
2155
2156 # documentation
2157 pod2man_deps="doc"
2158 texi2html_deps="doc"
2159
2160 # default parameters
2161
2162 logfile="config.log"
2163
2164 # installation paths
2165 prefix_default="/usr/local"
2166 bindir_default='${prefix}/bin'
2167 datadir_default='${prefix}/share/avconv'
2168 docdir_default='${prefix}/share/doc/libav'
2169 incdir_default='${prefix}/include'
2170 libdir_default='${prefix}/lib'
2171 mandir_default='${prefix}/share/man'
2172 shlibdir_default="$libdir_default"
2173
2174 # toolchain
2175 ar_default="ar"
2176 cc_default="gcc"
2177 host_cc_default="gcc"
2178 cp_f="cp -f"
2179 ln_s="ln -s -f"
2180 nm_default="nm -g"
2181 objformat="elf"
2182 pkg_config_default=pkg-config
2183 ranlib="ranlib"
2184 strip="strip"
2185 yasmexe="yasm"
2186
2187 nogas=":"
2188
2189 # machine
2190 arch_default=$(uname -m)
2191 cpu="generic"
2192
2193 # OS
2194 target_os_default=$(tolower $(uname -s))
2195 host_os=$target_os_default
2196
2197 # configurable options
2198 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2199
2200 enable asm
2201 enable debug
2202 enable doc
2203 enable optimizations
2204 enable safe_bitstream_reader
2205 enable static
2206 enable swscale_alpha
2207
2208 # By default, enable only those hwaccels that have no external dependencies.
2209 enable dxva2 vdpau
2210
2211 # build settings
2212 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2213 LIBPREF="lib"
2214 LIBSUF=".a"
2215 FULLNAME='$(NAME)$(BUILDSUF)'
2216 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2217 SLIBPREF="lib"
2218 SLIBSUF=".so"
2219 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2220 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2221 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2222 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2223 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2224 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2225
2226 asflags_filter=echo
2227 cflags_filter=echo
2228 ldflags_filter=echo
2229
2230 AS_C='-c'
2231 AS_O='-o $@'
2232 CC_C='-c'
2233 CC_E='-E -o $@'
2234 CC_O='-o $@'
2235 LD_O='-o $@'
2236 LD_LIB='-l%'
2237 LD_PATH='-L'
2238 HOSTCC_C='-c'
2239 HOSTCC_E='-E -o $@'
2240 HOSTCC_O='-o $@'
2241 HOSTLD_O='-o $@'
2242
2243 host_libs='-lm'
2244 host_cflags_filter=echo
2245 host_ldflags_filter=echo
2246
2247 target_path='$(CURDIR)'
2248
2249 # since the object filename is not given with the -MM flag, the compiler
2250 # is only able to print the basename, and we must add the path ourselves
2251 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2252 DEPFLAGS='-MM'
2253
2254 # find source path
2255 if test -f configure; then
2256     source_path=.
2257 else
2258     source_path=$(cd $(dirname "$0"); pwd)
2259     echo "$source_path" | grep -q '[[:blank:]]' &&
2260         die "Out of tree builds are impossible with whitespace in source path."
2261     test -e "$source_path/config.h" &&
2262         die "Out of tree builds are impossible with config.h in source dir."
2263 fi
2264
2265 for v in "$@"; do
2266     r=${v#*=}
2267     l=${v%"$r"}
2268     r=$(sh_quote "$r")
2269     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2270 done
2271
2272 find_things(){
2273     thing=$1
2274     pattern=$2
2275     file=$source_path/$3
2276     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2277 }
2278
2279 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2280 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2281 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2282 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2283 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2284 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2285 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2286 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2287 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2288 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2289 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2290
2291 ALL_COMPONENTS="
2292     $BSF_LIST
2293     $DECODER_LIST
2294     $DEMUXER_LIST
2295     $ENCODER_LIST
2296     $FILTER_LIST
2297     $HWACCEL_LIST
2298     $INDEV_LIST
2299     $MUXER_LIST
2300     $OUTDEV_LIST
2301     $PARSER_LIST
2302     $PROTOCOL_LIST
2303 "
2304
2305 for n in $COMPONENT_LIST; do
2306     v=$(toupper ${n%s})_LIST
2307     eval enable \$$v
2308     eval ${n}_if_any="\$$v"
2309 done
2310
2311 enable $ARCH_EXT_LIST
2312
2313 die_unknown(){
2314     echo "Unknown option \"$1\"."
2315     echo "See $0 --help for available options."
2316     exit 1
2317 }
2318
2319 print_3_columns() {
2320     cat | tr ' ' '\n' | sort | pr -r -3 -t
2321 }
2322
2323 show_list() {
2324     suffix=_$1
2325     shift
2326     echo $* | sed s/$suffix//g | print_3_columns
2327     exit 0
2328 }
2329
2330 rand_list(){
2331     IFS=', '
2332     set -- $*
2333     unset IFS
2334     for thing; do
2335         comp=${thing%:*}
2336         prob=${thing#$comp}
2337         prob=${prob#:}
2338         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2339         echo "prob ${prob:-0.5}"
2340         printf '%s\n' $comp
2341     done
2342 }
2343
2344 do_random(){
2345     action=$1
2346     shift
2347     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2348     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2349 }
2350
2351 for opt do
2352     optval="${opt#*=}"
2353     case "$opt" in
2354         --extra-ldflags=*)
2355             add_ldflags $optval
2356         ;;
2357         --extra-libs=*)
2358             add_extralibs $optval
2359         ;;
2360         --disable-devices)
2361             disable $INDEV_LIST $OUTDEV_LIST
2362         ;;
2363         --enable-debug=*)
2364             debuglevel="$optval"
2365         ;;
2366         --disable-programs)
2367             disable $PROGRAM_LIST
2368         ;;
2369         --disable-everything)
2370             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2371         ;;
2372         --disable-all)
2373             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2374             disable $LIBRARY_LIST $PROGRAM_LIST doc
2375         ;;
2376         --enable-random|--disable-random)
2377             action=${opt%%-random}
2378             do_random ${action#--} $COMPONENT_LIST
2379         ;;
2380         --enable-random=*|--disable-random=*)
2381             action=${opt%%-random=*}
2382             do_random ${action#--} $optval
2383         ;;
2384         --enable-*=*|--disable-*=*)
2385             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2386             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2387             eval list=\$$(toupper $thing)_LIST
2388             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2389             $action $(filter "$name" $list)
2390         ;;
2391         --enable-avserver|--disable-avserver*)
2392             warn "avserver has been removed, the ${opt} option is only"\
2393                  "provided for compatibility and will be removed in the future"
2394         ;;
2395         --enable-?*|--disable-?*)
2396             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2397             if is_in $option $COMPONENT_LIST; then
2398                 test $action = disable && action=unset
2399                 eval $action \$$(toupper ${option%s})_LIST
2400             elif is_in $option $CMDLINE_SELECT; then
2401                 $action $option
2402             else
2403                 die_unknown $opt
2404             fi
2405         ;;
2406         --list-*)
2407             NAME="${opt#--list-}"
2408             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2409             NAME=${NAME%s}
2410             eval show_list $NAME \$$(toupper $NAME)_LIST
2411         ;;
2412         --help|-h) show_help
2413         ;;
2414         *)
2415             optname="${opt%%=*}"
2416             optname="${optname#--}"
2417             optname=$(echo "$optname" | sed 's/-/_/g')
2418             if is_in $optname $CMDLINE_SET; then
2419                 eval $optname='$optval'
2420             elif is_in $optname $CMDLINE_APPEND; then
2421                 append $optname "$optval"
2422             else
2423                 die_unknown $opt
2424             fi
2425         ;;
2426     esac
2427 done
2428
2429 disabled logging && logfile=/dev/null
2430
2431 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2432 set >> $logfile
2433
2434 test -n "$cross_prefix" && enable cross_compile
2435
2436 if enabled cross_compile; then
2437     test -n "$arch" && test -n "$target_os" ||
2438         die "Must specify target arch and OS when cross-compiling"
2439 fi
2440
2441 ar_default="${cross_prefix}${ar_default}"
2442 cc_default="${cross_prefix}${cc_default}"
2443 nm_default="${cross_prefix}${nm_default}"
2444 pkg_config_default="${cross_prefix}${pkg_config_default}"
2445 ranlib="${cross_prefix}${ranlib}"
2446 strip="${cross_prefix}${strip}"
2447
2448 sysinclude_default="${sysroot}/usr/include"
2449
2450 case "$toolchain" in
2451     clang-asan)
2452         cc_default="clang"
2453         add_cflags  -fsanitize=address
2454         add_ldflags -fsanitize=address
2455     ;;
2456     clang-tsan)
2457         cc_default="clang"
2458         add_cflags  -fsanitize=thread -pie
2459         add_ldflags -fsanitize=thread -pie
2460     ;;
2461     clang-usan)
2462         cc_default="clang"
2463         add_cflags  -fsanitize=undefined -O1
2464         add_ldflags -fsanitize=undefined
2465     ;;
2466     gcc-asan)
2467         cc_default="gcc"
2468         add_cflags  -fsanitize=address
2469         add_ldflags -fsanitize=address
2470     ;;
2471     gcc-tsan)
2472         cc_default="gcc"
2473         add_cflags  -fsanitize=thread -pie -fPIC
2474         add_ldflags -fsanitize=thread -pie -fPIC
2475     ;;
2476     gcc-usan)
2477         cc_default="gcc"
2478         add_cflags  -fsanitize=undefined
2479         add_ldflags -fsanitize=undefined
2480     ;;
2481     valgrind-massif)
2482         target_exec_default="valgrind"
2483         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2484     ;;
2485     valgrind-memcheck)
2486         target_exec_default="valgrind"
2487         target_exec_args="--track-origins=yes --leak-check=full"
2488     ;;
2489     msvc)
2490         # Check whether the current MSVC version needs the C99 converter.
2491         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2492         # support enough of C99 to build libav. Default to the new
2493         # behaviour if the regexp was unable to match anything, since this
2494         # successfully parses the version number of existing supported
2495         # versions that require the converter (MSVC 2010 and 2012).
2496         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2497         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2498             cc_default="cl"
2499         else
2500             cc_default="c99wrap cl"
2501         fi
2502         ld_default="link"
2503         nm_default="dumpbin -symbols"
2504         ar_default="lib"
2505         target_os_default="win32"
2506         # Use a relative path for TMPDIR. This makes sure all the
2507         # ffconf temp files are written with a relative path, avoiding
2508         # issues with msys/win32 path conversion for MSVC parameters
2509         # such as -Fo<file> or -out:<file>.
2510         TMPDIR=.
2511     ;;
2512     icl)
2513         cc_default="icl"
2514         ld_default="xilink"
2515         nm_default="dumpbin -symbols"
2516         ar_default="xilib"
2517         target_os_default="win32"
2518         TMPDIR=.
2519     ;;
2520     gcov)
2521         add_cflags  -fprofile-arcs -ftest-coverage
2522         add_ldflags -fprofile-arcs -ftest-coverage
2523     ;;
2524     hardened)
2525         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2526         add_ldflags -Wl,-z,relro -Wl,-z,now
2527     ;;
2528     ?*)
2529         die "Unknown toolchain $toolchain"
2530     ;;
2531 esac
2532
2533 set_default arch cc pkg_config sysinclude target_exec target_os
2534 enabled cross_compile || host_cc_default=$cc
2535 set_default host_cc
2536
2537 if ! $pkg_config --version >/dev/null 2>&1; then
2538     warn "$pkg_config not found, library detection may fail."
2539     pkg_config=false
2540 fi
2541
2542 exesuf() {
2543     case $1 in
2544         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2545     esac
2546 }
2547
2548 EXESUF=$(exesuf $target_os)
2549 HOSTEXESUF=$(exesuf $host_os)
2550
2551 # set temporary file name
2552 : ${TMPDIR:=$TEMPDIR}
2553 : ${TMPDIR:=$TMP}
2554 : ${TMPDIR:=/tmp}
2555
2556 if ! check_cmd mktemp -u XXXXXX; then
2557     # simple replacement for missing mktemp
2558     # NOT SAFE FOR GENERAL USE
2559     mktemp(){
2560         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2561     }
2562 fi
2563
2564 tmpfile(){
2565     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2566         (set -C; exec > $tmp) 2>/dev/null ||
2567         die "Unable to create temporary file in $TMPDIR."
2568     append TMPFILES $tmp
2569     eval $1=$tmp
2570 }
2571
2572 trap 'rm -f -- $TMPFILES' EXIT
2573
2574 tmpfile TMPASM .asm
2575 tmpfile TMPC   .c
2576 tmpfile TMPE   $EXESUF
2577 tmpfile TMPH   .h
2578 tmpfile TMPO   .o
2579 tmpfile TMPS   .S
2580 tmpfile TMPSH  .sh
2581 tmpfile TMPV   .ver
2582
2583 unset -f mktemp
2584
2585 chmod +x $TMPE
2586
2587 # make sure we can execute files in $TMPDIR
2588 cat > $TMPSH 2>> $logfile <<EOF
2589 #! /bin/sh
2590 EOF
2591 chmod +x $TMPSH >> $logfile 2>&1
2592 if ! $TMPSH >> $logfile 2>&1; then
2593     cat <<EOF
2594 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2595 variable to another directory and make sure that it is not mounted noexec.
2596 EOF
2597     die "Sanity test failed."
2598 fi
2599
2600 ccc_flags(){
2601     for flag; do
2602         case $flag in
2603             -std=c99)           echo -c99                       ;;
2604             -mcpu=*)            echo -arch ${flag#*=}           ;;
2605             -mieee)             echo -ieee                      ;;
2606             -O*|-fast)          echo $flag                      ;;
2607             -fno-math-errno)    echo -assume nomath_errno       ;;
2608             -g)                 echo -g3                        ;;
2609             -Wall)              echo -msg_enable level2         ;;
2610             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2611             -Wl,*)              echo $flag                      ;;
2612             -f*|-W*)                                            ;;
2613             *)                  echo $flag                      ;;
2614         esac
2615    done
2616 }
2617
2618 cparser_flags(){
2619     for flag; do
2620         case $flag in
2621             -Wno-switch)             echo -Wno-switch-enum ;;
2622             -Wno-format-zero-length) ;;
2623             -Wdisabled-optimization) ;;
2624             -Wno-pointer-sign)       echo -Wno-other ;;
2625             *)                       echo $flag ;;
2626         esac
2627     done
2628 }
2629
2630 msvc_common_flags(){
2631     for flag; do
2632         case $flag in
2633             # In addition to specifying certain flags under the compiler
2634             # specific filters, they must be specified here as well or else the
2635             # generic catch all at the bottom will print the original flag.
2636             -Wall)                ;;
2637             -std=c99)             ;;
2638             # Common flags
2639             -fomit-frame-pointer) ;;
2640             -g)                   echo -Z7 ;;
2641             -fno-math-errno)      ;;
2642             -fno-common)          ;;
2643             -fno-signed-zeros)    ;;
2644             -fPIC)                ;;
2645             -mthumb)              ;;
2646             -march=*)             ;;
2647             -lz)                  echo zlib.lib ;;
2648             -lavifil32)           echo vfw32.lib ;;
2649             -lavicap32)           echo vfw32.lib user32.lib ;;
2650             -l*)                  echo ${flag#-l}.lib ;;
2651             *)                    echo $flag ;;
2652         esac
2653     done
2654 }
2655
2656 msvc_flags(){
2657     msvc_common_flags "$@"
2658     for flag; do
2659         case $flag in
2660             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2661                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2662                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2663                                        -wd4273 ;;
2664         esac
2665     done
2666 }
2667
2668 icl_flags(){
2669     msvc_common_flags "$@"
2670     for flag; do
2671         case $flag in
2672             # Despite what Intel's documentation says -Wall, which is supported
2673             # on Windows, does enable remarks so disable them here.
2674             -Wall)                echo $flag -Qdiag-disable:remark ;;
2675             -std=c99)             echo -Qstd=c99 ;;
2676         esac
2677     done
2678 }
2679
2680 pgi_flags(){
2681     for flag; do
2682         case $flag in
2683             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2684             -fomit-frame-pointer) echo -Mnoframe ;;
2685             -g)                   echo -gopt ;;
2686             *)                    echo $flag ;;
2687         esac
2688     done
2689 }
2690
2691 suncc_flags(){
2692     for flag; do
2693         case $flag in
2694             -march=*|-mcpu=*)
2695                 case "${flag#*=}" in
2696                     native)                   echo -xtarget=native       ;;
2697                     v9|niagara)               echo -xarch=sparc          ;;
2698                     ultrasparc)               echo -xarch=sparcvis       ;;
2699                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2700                     i586|pentium)             echo -xchip=pentium        ;;
2701                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2702                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2703                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2704                     pentium4*)          echo -xtarget=pentium4           ;;
2705                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2706                     *-sse3)             echo -xarch=sse3                 ;;
2707                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2708                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2709                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2710                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2711                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2712                     k8|opteron|athlon64|athlon-fx)
2713                                                echo -xarch=sse2a         ;;
2714                     athlon*)                   echo -xarch=pentium_proa  ;;
2715                 esac
2716                 ;;
2717             -std=c99)             echo -xc99              ;;
2718             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2719             -fPIC)                echo -KPIC -xcode=pic32 ;;
2720             -W*,*)                echo $flag              ;;
2721             -f*-*|-W*|-mimpure-text)                      ;;
2722             -shared)              echo -G                 ;;
2723             *)                    echo $flag              ;;
2724         esac
2725     done
2726 }
2727
2728 tms470_flags(){
2729     for flag; do
2730         case $flag in
2731             -march=*|-mcpu=*)
2732                 case "${flag#*=}" in
2733                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2734                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2735                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2736                     armv6*|arm11*)          echo -mv=6   ;;
2737                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2738                                             echo -mv=5e  ;;
2739                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2740                 esac
2741                 ;;
2742             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2743             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2744             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2745             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2746             -msoft-float)   echo --float_support=vfplib       ;;
2747             -O[0-3]|-mf=*)  echo $flag                        ;;
2748             -g)             echo -g -mn                       ;;
2749             -pds=*)         echo $flag                        ;;
2750             -D*|-I*)        echo $flag                        ;;
2751             --gcc|--abi=*)  echo $flag                        ;;
2752             -me)            echo $flag                        ;;
2753         esac
2754     done
2755 }
2756
2757 probe_cc(){
2758     pfx=$1
2759     _cc=$2
2760
2761     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2762     unset _ld_o _ldflags _ld_lib _ld_path
2763     unset _depflags _DEPCMD _DEPFLAGS
2764     _flags_filter=echo
2765
2766     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2767         _type=llvm_gcc
2768         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2769         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2770         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2771         _cflags_speed='-O3'
2772         _cflags_size='-Os'
2773     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2774         _type=gcc
2775         gcc_version=$($_cc --version | head -n1)
2776         gcc_basever=$($_cc -dumpversion)
2777         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2778         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2779         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2780         if ! $_cc -dumpversion | grep -q '^2\.'; then
2781             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2782         fi
2783         _cflags_speed='-O3'
2784         _cflags_size='-Os'
2785     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2786         _type=icc
2787         _ident=$($_cc --version | head -n1)
2788         _depflags='-MMD'
2789         _cflags_speed='-O3'
2790         _cflags_size='-Os'
2791         _cflags_noopt='-O1'
2792     elif $_cc -v 2>&1 | grep -q xlc; then
2793         _type=xlc
2794         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2795         _cflags_speed='-O5'
2796         _cflags_size='-O5 -qcompact'
2797     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2798         _type=ccc
2799         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2800         _DEPFLAGS='-M'
2801         _cflags_speed='-fast'
2802         _cflags_size='-O1'
2803         _flags_filter=ccc_flags
2804     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2805         test -d "$sysroot" || die "No valid sysroot specified."
2806         _type=armcc
2807         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2808         armcc_conf="$PWD/armcc.conf"
2809         $_cc --arm_linux_configure                 \
2810              --arm_linux_config_file="$armcc_conf" \
2811              --configure_sysroot="$sysroot"        \
2812              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2813              die "Error creating armcc configuration file."
2814         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2815         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2816         as_default="${cross_prefix}gcc"
2817         _depflags='-MMD'
2818         _cflags_speed='-O3'
2819         _cflags_size='-Os'
2820     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2821         _type=tms470
2822         _ident=$($_cc -version | head -n1 | tr -s ' ')
2823         _flags='--gcc --abi=eabi -me'
2824         _cc_e='-ppl -fe=$@'
2825         _cc_o='-fe=$@'
2826         _depflags='-ppa -ppd=$(@:.o=.d)'
2827         _cflags_speed='-O3 -mf=5'
2828         _cflags_size='-O3 -mf=2'
2829         _flags_filter=tms470_flags
2830     elif $_cc -v 2>&1 | grep -q clang; then
2831         _type=clang
2832         _ident=$($_cc --version | head -n1)
2833         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2834         _cflags_speed='-O3'
2835         _cflags_size='-Os'
2836     elif $_cc -V 2>&1 | grep -q Sun; then
2837         _type=suncc
2838         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2839         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2840         _DEPFLAGS='-xM1 -xc99'
2841         _ldflags='-std=c99'
2842         _cflags_speed='-O5'
2843         _cflags_size='-O5 -xspace'
2844         _flags_filter=suncc_flags
2845     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2846         _type=pathscale
2847         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2848         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2849         _cflags_speed='-O2'
2850         _cflags_size='-Os'
2851         _flags_filter='filter_out -Wdisabled-optimization'
2852     elif $_cc -v 2>&1 | grep -q Open64; then
2853         _type=open64
2854         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2855         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2856         _cflags_speed='-O2'
2857         _cflags_size='-Os'
2858         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2859     elif $_cc -V 2>&1 | grep -q Portland; then
2860         _type=pgi
2861         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2862         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2863         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2864         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2865         _cflags_noopt="-O1"
2866         _flags_filter=pgi_flags
2867     elif $_cc 2>&1 | grep -q Microsoft; then
2868         _type=msvc
2869         _ident=$($cc 2>&1 | head -n1)
2870         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2871         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2872         _cflags_speed="-O2"
2873         _cflags_size="-O1"
2874         if $_cc 2>&1 | grep -q Linker; then
2875             _ld_o='-out:$@'
2876         else
2877             _ld_o='-Fe$@'
2878         fi
2879         _cc_o='-Fo$@'
2880         _cc_e='-P -Fi$@'
2881         _flags_filter=msvc_flags
2882         _ld_lib='lib%.a'
2883         _ld_path='-libpath:'
2884         _flags='-nologo'
2885         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2886         if [ $pfx = hostcc ]; then
2887             append _cflags -Dsnprintf=_snprintf
2888         fi
2889     elif $_cc 2>&1 | grep -q Intel; then
2890         _type=icl
2891         _ident=$($cc 2>&1 | head -n1)
2892         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2893         # Not only is O3 broken on 13.x+ but it is slower on all previous
2894         # versions (tested) as well.
2895         _cflags_speed="-O2"
2896         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2897         if $_cc 2>&1 | grep -q Linker; then
2898             _ld_o='-out:$@'
2899         else
2900             _ld_o='-Fe$@'
2901         fi
2902         _cc_o='-Fo$@'
2903         _cc_e='-P'
2904         _flags_filter=icl_flags
2905         _ld_lib='lib%.a'
2906         _ld_path='-libpath:'
2907         # -Qdiag-error to make icl error when seeing certain unknown arguments
2908         _flags='-nologo -Qdiag-error:4044,10157'
2909         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2910         # with MSVC which enables it by default.
2911         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2912         if [ $pfx = hostcc ]; then
2913             append _cflags -Dsnprintf=_snprintf
2914         fi
2915     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2916         _type=cparser
2917         _ident=$($_cc --version | head -n1)
2918         _depflags='-MMD'
2919         _cflags_speed='-O4'
2920         _cflags_size='-O2'
2921         _flags_filter=cparser_flags
2922     fi
2923
2924     eval ${pfx}_type=\$_type
2925     eval ${pfx}_ident=\$_ident
2926 }
2927
2928 set_ccvars(){
2929     eval ${1}_C=\${_cc_c-\${${1}_C}}
2930     eval ${1}_E=\${_cc_e-\${${1}_E}}
2931     eval ${1}_O=\${_cc_o-\${${1}_O}}
2932
2933     if [ -n "$_depflags" ]; then
2934         eval ${1}_DEPFLAGS=\$_depflags
2935     else
2936         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2937         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2938         eval DEP${1}FLAGS=\$_flags
2939     fi
2940 }
2941
2942 probe_cc cc "$cc"
2943 cflags_filter=$_flags_filter
2944 cflags_speed=$_cflags_speed
2945 cflags_size=$_cflags_size
2946 cflags_noopt=$_cflags_noopt
2947 add_cflags $_flags $_cflags
2948 cc_ldflags=$_ldflags
2949 set_ccvars CC
2950
2951 probe_cc hostcc "$host_cc"
2952 host_cflags_filter=$_flags_filter
2953 add_host_cflags  $_flags $_cflags
2954 set_ccvars HOSTCC
2955
2956 test -n "$cc_type" && enable $cc_type ||
2957     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2958
2959 : ${as_default:=$cc}
2960 : ${dep_cc_default:=$cc}
2961 : ${ld_default:=$cc}
2962 : ${host_ld_default:=$host_cc}
2963 set_default ar as dep_cc ld host_ld
2964
2965 probe_cc as "$as"
2966 asflags_filter=$_flags_filter
2967 add_asflags $_flags $_cflags
2968 set_ccvars AS
2969
2970 probe_cc ld "$ld"
2971 ldflags_filter=$_flags_filter
2972 add_ldflags $_flags $_ldflags
2973 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2974 LD_O=${_ld_o-$LD_O}
2975 LD_LIB=${_ld_lib-$LD_LIB}
2976 LD_PATH=${_ld_path-$LD_PATH}
2977
2978 probe_cc hostld "$host_ld"
2979 host_ldflags_filter=$_flags_filter
2980 add_host_ldflags $_flags $_ldflags
2981 HOSTLD_O=${_ld_o-$HOSTLD_O}
2982
2983 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2984     probe_cc depcc "$dep_cc"
2985     CCDEP=${_DEPCMD:-$DEPCMD}
2986     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2987     DEPCCFLAGS=$_flags
2988 fi
2989
2990 if $ar 2>&1 | grep -q Microsoft; then
2991     arflags="-nologo"
2992     ar_o='-out:$@'
2993 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2994     arflags="rq"
2995     ar_o='$@'
2996 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2997     arflags='-Xany -r -c'
2998     ar_o='$@'
2999 else
3000     arflags="rc"
3001     ar_o='$@'
3002 fi
3003
3004 add_cflags $extra_cflags
3005 add_asflags $extra_cflags
3006
3007 if test -n "$sysroot"; then
3008     case "$cc_type" in
3009         gcc|llvm_gcc|clang)
3010             add_cppflags --sysroot="$sysroot"
3011             add_ldflags --sysroot="$sysroot"
3012         ;;
3013         tms470)
3014             add_cppflags -I"$sysinclude"
3015             add_ldflags  --sysroot="$sysroot"
3016         ;;
3017     esac
3018 fi
3019
3020 if test "$cpu" = host; then
3021     enabled cross_compile &&
3022         die "--cpu=host makes no sense when cross-compiling."
3023
3024     case "$cc_type" in
3025         gcc|llvm_gcc)
3026             check_native(){
3027                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3028                 sed -n "/cc1.*$1=/{
3029                             s/.*$1=\\([^ ]*\\).*/\\1/
3030                             p
3031                             q
3032                         }" $TMPE
3033             }
3034             cpu=$(check_native -march || check_native -mcpu)
3035         ;;
3036     esac
3037
3038     test "${cpu:-host}" = host &&
3039         die "--cpu=host not supported with compiler $cc"
3040 fi
3041
3042 # Deal with common $arch aliases
3043 case "$arch" in
3044     aarch64|arm64)
3045         arch="aarch64"
3046     ;;
3047     arm*)
3048         arch="arm"
3049     ;;
3050     mips*|IP*)
3051         arch="mips"
3052     ;;
3053     parisc*|hppa*)
3054         arch="parisc"
3055     ;;
3056     "Power Macintosh"|ppc*|powerpc*)
3057         arch="ppc"
3058     ;;
3059     s390|s390x)
3060         arch="s390"
3061     ;;
3062     sh4|sh)
3063         arch="sh4"
3064     ;;
3065     sun4u|sparc*)
3066         arch="sparc"
3067     ;;
3068     tilegx|tile-gx)
3069         arch="tilegx"
3070     ;;
3071     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3072         arch="x86"
3073     ;;
3074 esac
3075
3076 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3077 enable $arch
3078
3079 # Add processor-specific flags
3080 if enabled aarch64; then
3081
3082     case $cpu in
3083         armv*)
3084             cpuflags="-march=$cpu"
3085         ;;
3086         *)
3087             cpuflags="-mcpu=$cpu"
3088         ;;
3089     esac
3090
3091 elif enabled alpha; then
3092
3093     cpuflags="-mcpu=$cpu"
3094
3095 elif enabled arm; then
3096
3097     check_arm_arch() {
3098         check_cpp_condition stddef.h \
3099             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3100             $cpuflags
3101     }
3102
3103     probe_arm_arch() {
3104         if   check_arm_arch 4;        then echo armv4;
3105         elif check_arm_arch 4T;       then echo armv4t;
3106         elif check_arm_arch 5;        then echo armv5;
3107         elif check_arm_arch 5E;       then echo armv5e;
3108         elif check_arm_arch 5T;       then echo armv5t;
3109         elif check_arm_arch 5TE;      then echo armv5te;
3110         elif check_arm_arch 5TEJ;     then echo armv5te;
3111         elif check_arm_arch 6;        then echo armv6;
3112         elif check_arm_arch 6J;       then echo armv6j;
3113         elif check_arm_arch 6K;       then echo armv6k;
3114         elif check_arm_arch 6Z;       then echo armv6z;
3115         elif check_arm_arch 6ZK;      then echo armv6zk;
3116         elif check_arm_arch 6T2;      then echo armv6t2;
3117         elif check_arm_arch 7;        then echo armv7;
3118         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3119         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3120         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3121         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3122         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3123         fi
3124     }
3125
3126     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3127
3128     case $cpu in
3129         armv*)
3130             cpuflags="-march=$cpu"
3131             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3132         ;;
3133         *)
3134             cpuflags="-mcpu=$cpu"
3135             case $cpu in
3136                 cortex-a*)                               subarch=armv7a  ;;
3137                 cortex-r*)                               subarch=armv7r  ;;
3138                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3139                 arm11*)                                  subarch=armv6   ;;
3140                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3141                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3142                 *)                             subarch=$(probe_arm_arch) ;;
3143             esac
3144         ;;
3145     esac
3146
3147     case "$subarch" in
3148         armv5t*)    enable fast_clz                ;;
3149         armv[6-8]*) enable fast_clz fast_unaligned ;;
3150     esac
3151
3152 elif enabled avr32; then
3153
3154     case $cpu in
3155         ap7[02]0[0-2])
3156             subarch="avr32_ap"
3157             cpuflags="-mpart=$cpu"
3158         ;;
3159         ap)
3160             subarch="avr32_ap"
3161             cpuflags="-march=$cpu"
3162         ;;
3163         uc3[ab]*)
3164             subarch="avr32_uc"
3165             cpuflags="-mcpu=$cpu"
3166         ;;
3167         uc)
3168             subarch="avr32_uc"
3169             cpuflags="-march=$cpu"
3170         ;;
3171     esac
3172
3173 elif enabled bfin; then
3174
3175     cpuflags="-mcpu=$cpu"
3176
3177 elif enabled mips; then
3178
3179     cpuflags="-march=$cpu"
3180
3181 elif enabled ppc; then
3182
3183     disable ldbrx
3184
3185     case $(tolower $cpu) in
3186         601|ppc601|powerpc601)
3187             cpuflags="-mcpu=601"
3188             disable altivec
3189         ;;
3190         603*|ppc603*|powerpc603*)
3191             cpuflags="-mcpu=603"
3192             disable altivec
3193         ;;
3194         604*|ppc604*|powerpc604*)
3195             cpuflags="-mcpu=604"
3196             disable altivec
3197         ;;
3198         g3|75*|ppc75*|powerpc75*)
3199             cpuflags="-mcpu=750"
3200             disable altivec
3201         ;;
3202         g4|745*|ppc745*|powerpc745*)
3203             cpuflags="-mcpu=7450"
3204         ;;
3205         74*|ppc74*|powerpc74*)
3206             cpuflags="-mcpu=7400"
3207         ;;
3208         g5|970|ppc970|powerpc970)
3209             cpuflags="-mcpu=970"
3210         ;;
3211         power[3-7]*)
3212             cpuflags="-mcpu=$cpu"
3213         ;;
3214         cell)
3215             cpuflags="-mcpu=cell"
3216             enable ldbrx
3217         ;;
3218         e500mc)
3219             cpuflags="-mcpu=e500mc"
3220             disable altivec
3221         ;;
3222         e500v2)
3223             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3224             disable altivec
3225             disable dcbzl
3226         ;;
3227         e500)
3228             cpuflags="-mcpu=8540 -mhard-float"
3229             disable altivec
3230             disable dcbzl
3231         ;;
3232     esac
3233
3234 elif enabled sparc; then
3235
3236     case $cpu in
3237         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3238             cpuflags="-mcpu=$cpu"
3239         ;;
3240         ultrasparc*|niagara[234])
3241             cpuflags="-mcpu=$cpu"
3242         ;;
3243     esac
3244
3245 elif enabled x86; then
3246
3247     case $cpu in
3248         i[345]86|pentium)
3249             cpuflags="-march=$cpu"
3250             disable mmx
3251         ;;
3252         # targets that do NOT support nopl and conditional mov (cmov)
3253         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3254             cpuflags="-march=$cpu"
3255             disable i686
3256         ;;
3257         # targets that do support nopl and conditional mov (cmov)
3258         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3259             cpuflags="-march=$cpu"
3260             enable i686
3261             enable fast_cmov
3262         ;;
3263         # targets that do support conditional mov but on which it's slow
3264         pentium4|pentium4m|prescott|nocona)
3265             cpuflags="-march=$cpu"
3266             enable i686
3267             disable fast_cmov
3268         ;;
3269     esac
3270
3271 fi
3272
3273 if [ "$cpu" != generic ]; then
3274     add_cflags  $cpuflags
3275     add_asflags $cpuflags
3276 fi
3277
3278 # compiler sanity check
3279 check_exec <<EOF
3280 int main(void){ return 0; }
3281 EOF
3282 if test "$?" != 0; then
3283     echo "$cc is unable to create an executable file."
3284     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3285         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3286         echo "Only do this if you know what cross compiling means."
3287     fi
3288     die "C compiler test failed."
3289 fi
3290
3291 add_cppflags -D_ISOC99_SOURCE
3292 check_cflags -std=c99
3293 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3294 #include <stdlib.h>
3295 EOF
3296 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3297 #include <stdlib.h>
3298 EOF
3299
3300 add_host_cppflags -D_ISOC99_SOURCE
3301 check_host_cflags -std=c99
3302 check_host_cflags -Wall
3303 check_host_cflags -O3
3304
3305 check_64bit(){
3306     arch32=$1
3307     arch64=$2
3308     expr=$3
3309     check_code cc "" "int test[2*($expr) - 1]" &&
3310         subarch=$arch64 || subarch=$arch32
3311 }
3312
3313 case "$arch" in
3314     aarch64|alpha|ia64)
3315         spic=$shared
3316     ;;
3317     mips)
3318         check_64bit mips mips64 '_MIPS_SIM > 1'
3319         spic=$shared
3320     ;;
3321     parisc)
3322         check_64bit parisc parisc64 'sizeof(void *) > 4'
3323         spic=$shared
3324     ;;
3325     ppc)
3326         check_64bit ppc ppc64 'sizeof(void *) > 4'
3327         spic=$shared
3328     ;;
3329     s390)
3330         check_64bit s390 s390x 'sizeof(void *) > 4'
3331         spic=$shared
3332     ;;
3333     sparc)
3334         check_64bit sparc sparc64 'sizeof(void *) > 4'
3335         spic=$shared
3336     ;;
3337     x86)
3338         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3339         if test "$subarch" = "x86_64"; then
3340             spic=$shared
3341         fi
3342     ;;
3343 esac
3344
3345 enable $subarch
3346 enabled spic && enable_weak pic
3347
3348 # OS specific
3349 case $target_os in
3350     aix)
3351         SHFLAGS=-shared
3352         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3353         enabled shared && add_ldflags -Wl,-brtl
3354         ;;
3355     android)
3356         disable symver
3357         SLIB_INSTALL_NAME='$(SLIBNAME)'
3358         SLIB_INSTALL_LINKS=
3359         # soname not set on purpose
3360         SHFLAGS=-shared
3361         ;;
3362     haiku)
3363         prefix_default="/boot/common"
3364         network_extralibs="-lnetwork"
3365         host_libs=
3366         ;;
3367     sunos)
3368         SHFLAGS='-shared -Wl,-h,$$(@F)'
3369         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3370         network_extralibs="-lsocket -lnsl"
3371         # When using suncc to build, the Solaris linker will mark
3372         # an executable with each instruction set encountered by
3373         # the Solaris assembler.  As our libraries contain their own
3374         # guards for processor-specific code, instead suppress
3375         # generation of the HWCAPS ELF section on Solaris x86 only.
3376         enabled_all suncc x86 &&
3377             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3378             add_ldflags -Wl,-M,mapfile
3379         nm_default='nm -P -g'
3380         ;;
3381     netbsd)
3382         disable symver
3383         oss_indev_extralibs="-lossaudio"
3384         oss_outdev_extralibs="-lossaudio"
3385         ;;
3386     openbsd|bitrig)
3387         disable symver
3388         SHFLAGS='-shared'
3389         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3390         SLIB_INSTALL_LINKS=
3391         oss_indev_extralibs="-lossaudio"
3392         oss_outdev_extralibs="-lossaudio"
3393         ;;
3394     dragonfly)
3395         disable symver
3396         ;;
3397     freebsd)
3398         ;;
3399     bsd/os)
3400         add_extralibs -lpoll -lgnugetopt
3401         ;;
3402     darwin)
3403         gas="gas-preprocessor.pl $cc"
3404         enabled ppc && add_asflags -force_cpusubtype_ALL
3405         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3406         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3407         add_ldflags -Wl,-dynamic,-search_paths_first
3408         SLIBSUF=".dylib"
3409         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3410         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3411         objformat="macho"
3412         enabled x86_64 && objformat="macho64"
3413         enabled_any pic shared ||
3414             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3415         ;;
3416     mingw32*)
3417         if test $target_os = "mingw32ce"; then
3418             disable network
3419         else
3420             target_os=mingw32
3421         fi
3422         LIBTARGET=i386
3423         if enabled x86_64; then
3424             LIBTARGET="i386:x86-64"
3425         elif enabled arm; then
3426             LIBTARGET=arm-wince
3427         fi
3428         check_ldflags -Wl,--nxcompat
3429         check_ldflags -Wl,--dynamicbase
3430         shlibdir_default="$bindir_default"
3431         SLIBPREF=""
3432         SLIBSUF=".dll"
3433         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3434         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3435         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3436         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3437         SLIB_INSTALL_LINKS=
3438         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3439         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3440         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3441         objformat="win32"
3442         dlltool="${cross_prefix}dlltool"
3443         ranlib=:
3444         enable dos_paths
3445         ;;
3446     win32|win64)
3447         disable symver
3448         if enabled shared; then
3449             # Link to the import library instead of the normal static library
3450             # for shared libs.
3451             LD_LIB='%.lib'
3452             # Cannot build both shared and static libs with MSVC or icl.
3453             disable static
3454         fi
3455         shlibdir_default="$bindir_default"
3456         SLIBPREF=""
3457         SLIBSUF=".dll"
3458         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3459         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3460         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3461         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3462         SLIB_INSTALL_LINKS=
3463         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3464         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3465         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3466         objformat="win32"
3467         ranlib=:
3468         enable dos_paths
3469         ;;
3470     cygwin*)
3471         target_os=cygwin
3472         shlibdir_default="$bindir_default"
3473         SLIBPREF="cyg"
3474         SLIBSUF=".dll"
3475         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3476         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3477         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3478         SLIB_INSTALL_LINKS=
3479         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3480         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3481         objformat="win32"
3482         enable dos_paths
3483         ;;
3484     *-dos|freedos|opendos)
3485         network_extralibs="-lsocket"
3486         objformat="coff"
3487         enable dos_paths
3488         add_cppflags -U__STRICT_ANSI__
3489         ;;
3490     linux)
3491         enable dv1394
3492         ;;
3493     irix*)
3494         target_os=irix
3495         ranlib="echo ignoring ranlib"
3496         ;;
3497     os/2*)
3498         ln_s="cp -f"
3499         objformat="aout"
3500         add_cppflags -D_GNU_SOURCE
3501         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3502         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3503         LIBSUF="_s.a"
3504         SLIBPREF=""
3505         SLIBSUF=".dll"
3506         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3507         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3508         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3509             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3510             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3511             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3512             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3513             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3514         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3515             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3516         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3517         enable dos_paths
3518         ;;
3519     gnu/kfreebsd)
3520         add_cppflags -D_BSD_SOURCE
3521         ;;
3522     gnu)
3523         ;;
3524     qnx)
3525         add_cppflags -D_QNX_SOURCE
3526         network_extralibs="-lsocket"
3527         ;;
3528     symbian)
3529         SLIBSUF=".dll"
3530         enable dos_paths
3531         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3532         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3533         add_ldflags -Wl,--target1-abs,--no-undefined \
3534                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3535                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3536         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3537                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3538                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3539         ;;
3540     osf1)
3541         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3542         ;;
3543     minix)
3544         ;;
3545     plan9)
3546         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3547                      -D_REENTRANT_SOURCE        \
3548                      -D_RESEARCH_SOURCE         \
3549                      -DFD_SETSIZE=96            \
3550                      -DHAVE_SOCK_OPTS
3551         add_compat strtod.o strtod=avpriv_strtod
3552         network_extralibs='-lbsd'
3553         exeobjs=compat/plan9/main.o
3554         cp_f='cp'
3555         ;;
3556     none)
3557         ;;
3558     *)
3559         die "Unknown OS '$target_os'."
3560         ;;
3561 esac
3562
3563 # determine libc flavour
3564
3565 probe_libc(){
3566     pfx=$1
3567     pfx_no_=${pfx%_}
3568     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3569     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3570         eval ${pfx}libc_type=uclibc
3571         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3572     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3573         eval ${pfx}libc_type=glibc
3574         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3575     # MinGW headers can be installed on Cygwin, so check for newlib first.
3576     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3577         eval ${pfx}libc_type=newlib
3578         add_${pfx}cppflags -U__STRICT_ANSI__
3579     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3580     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3581         eval ${pfx}libc_type=mingw64
3582         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3583         eval test \$${pfx_no_}cc_type = "gcc" &&
3584             add_${pfx}cppflags -D__printf__=__gnu_printf__
3585     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3586          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3587         eval ${pfx}libc_type=mingw32
3588         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3589             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3590             die "ERROR: MinGW32 runtime version must be >= 3.15."
3591         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3592         eval test \$${pfx_no_}cc_type = "gcc" &&
3593             add_${pfx}cppflags -D__printf__=__gnu_printf__
3594     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3595         eval ${pfx}libc_type=msvcrt
3596         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3597         # 0x601 by default unless something else is set by the user.
3598         # This can easily lead to us detecting functions only present
3599         # in such new versions and producing binaries requiring windows 7.0.
3600         # Therefore explicitly set the default to XP unless the user has
3601         # set something else on the command line.
3602         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3603             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3604     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3605         eval ${pfx}libc_type=klibc
3606     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3607         eval ${pfx}libc_type=bionic
3608     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3609         eval ${pfx}libc_type=solaris
3610         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3611     fi
3612 }
3613
3614 probe_libc
3615 test -n "$libc_type" && enable libc_$libc_type
3616 probe_libc host_
3617 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3618
3619 case $libc_type in
3620     bionic)
3621         add_compat strtod.o strtod=avpriv_strtod
3622         ;;
3623     msvcrt)
3624         add_compat strtod.o strtod=avpriv_strtod
3625         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3626                                      _snprintf=avpriv_snprintf  \
3627                                      vsnprintf=avpriv_vsnprintf
3628         ;;
3629 esac
3630
3631 # hacks for compiler/libc/os combinations
3632
3633 if enabled_all tms470 libc_glibc; then
3634     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3635     add_cppflags -D__USER_LABEL_PREFIX__=
3636     add_cppflags -D__builtin_memset=memset
3637     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3638     add_cflags   -pds=48    # incompatible redefinition of macro
3639 fi
3640
3641 if enabled_all ccc libc_glibc; then
3642     add_ldflags -Wl,-z,now  # calls to libots crash without this
3643 fi
3644
3645 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3646     add_cppflags '-I\$(SRC_PATH)/compat/float'
3647
3648 esc(){
3649     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3650 }
3651
3652 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3653
3654 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3655
3656 set_default $PATHS_LIST
3657 set_default nm
3658
3659 # we need to build at least one lib type
3660 if ! enabled_any static shared; then
3661     cat <<EOF
3662 At least one library type must be built.
3663 Specify --enable-static to build the static libraries or --enable-shared to
3664 build the shared libraries as well. To only build the shared libraries specify
3665 --disable-static in addition to --enable-shared.
3666 EOF
3667     exit 1;
3668 fi
3669
3670 die_license_disabled() {
3671     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3672 }
3673
3674 die_license_disabled gpl libcdio
3675 die_license_disabled gpl libx264
3676 die_license_disabled gpl libx265
3677 die_license_disabled gpl libxavs
3678 die_license_disabled gpl libxvid
3679 die_license_disabled gpl x11grab
3680
3681 die_license_disabled nonfree libfaac
3682 die_license_disabled nonfree libfdk_aac
3683 die_license_disabled nonfree openssl
3684
3685 die_license_disabled version3 libopencore_amrnb
3686 die_license_disabled version3 libopencore_amrwb
3687 die_license_disabled version3 libvo_aacenc
3688 die_license_disabled version3 libvo_amrwbenc
3689
3690 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3691
3692 disabled optimizations || check_cflags -fomit-frame-pointer
3693
3694 enable_weak_pic() {
3695     disabled pic && return
3696     enable pic
3697     add_cppflags -DPIC
3698     case "$target_os" in
3699     mingw*|cygwin*)
3700         ;;
3701     *)
3702         add_cflags -fPIC
3703         ;;
3704     esac
3705     add_asflags  -fPIC
3706 }
3707
3708 enabled pic && enable_weak_pic
3709
3710 check_cc <<EOF || die "Symbol mangling check failed."
3711 int ff_extern;
3712 EOF
3713 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3714 extern_prefix=${sym%%ff_extern*}
3715
3716 check_cc <<EOF && enable_weak inline_asm
3717 void foo(void) { __asm__ volatile ("" ::); }
3718 EOF
3719
3720 _restrict=
3721 for restrict_keyword in restrict __restrict__ __restrict; do
3722     check_cc <<EOF && _restrict=$restrict_keyword && break
3723 void foo(char * $restrict_keyword p);
3724 EOF
3725 done
3726
3727 check_cc <<EOF && enable pragma_deprecated
3728 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3729 EOF
3730
3731 check_cc <<EOF && enable attribute_packed
3732 struct { int x; } __attribute__((packed)) x;
3733 EOF
3734
3735 check_cc <<EOF && enable attribute_may_alias
3736 union { int x; } __attribute__((may_alias)) x;
3737 EOF
3738
3739 check_cc <<EOF || die "endian test failed"
3740 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3741 EOF
3742 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3743
3744
3745 if enabled asm; then
3746     enabled     arm         && nogas=die
3747     enabled_all ppc altivec && nogas=warn
3748     as=${gas:=$as}
3749     check_as <<EOF && enable gnu_as || \
3750         $nogas "GNU assembler not found, install gas-preprocessor"
3751 .macro m n
3752 \n: .int 0
3753 .endm
3754 m x
3755 EOF
3756
3757     check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
3758 .altmacro
3759 EOF
3760
3761     check_as <<EOF && enable as_func
3762 .func test
3763 .endfunc
3764 EOF
3765 fi
3766
3767 check_inline_asm inline_asm_labels '"1:\n"'
3768
3769 if enabled aarch64; then
3770     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3771     # internal assembler in clang 3.3 does not support this instruction
3772     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3773     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3774
3775     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3776
3777 elif enabled alpha; then
3778
3779     check_cflags -mieee
3780
3781 elif enabled arm; then
3782
3783     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3784     enabled thumb && check_cflags -mthumb || check_cflags -marm
3785
3786     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3787         enable vfp_args
3788     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3789         case "${cross_prefix:-$cc}" in
3790             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3791             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3792 __asm__ (".eabi_attribute 28, 1");
3793 int main(void) { return 0; }
3794 EOF
3795         esac
3796         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3797     fi
3798
3799     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3800     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3801     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3802     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3803     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3804     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3805
3806     [ $target_os = linux ] ||
3807         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3808             $ARCH_EXT_LIST_ARM
3809
3810     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3811
3812     check_as <<EOF && enable as_dn_directive
3813 ra .dn d0.i16
3814 .unreq ra
3815 EOF
3816
3817     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3818
3819 elif enabled mips; then
3820
3821     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3822
3823 elif enabled parisc; then
3824
3825     if enabled gcc; then
3826         case $($cc -dumpversion) in
3827             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3828         esac
3829     fi
3830
3831 elif enabled ppc; then
3832
3833     enable local_aligned_8 local_aligned_16
3834
3835     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3836     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3837     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3838     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3839
3840     # AltiVec flags: The FSF version of GCC differs from the Apple version
3841     if enabled altivec; then
3842         check_cflags -maltivec -mabi=altivec &&
3843         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3844         check_cflags -faltivec
3845
3846         # check if our compiler supports Motorola AltiVec C API
3847         check_cc <<EOF || disable altivec
3848 $inc_altivec_h
3849 int main(void) {
3850     vector signed int v1 = (vector signed int) { 0 };
3851     vector signed int v2 = (vector signed int) { 1 };
3852     v1 = vec_add(v1, v2);
3853     return 0;
3854 }
3855 EOF
3856
3857         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3858     fi
3859
3860 elif enabled x86; then
3861
3862     check_builtin rdtsc    intrin.h   "__rdtsc()"
3863     check_builtin mm_empty mmintrin.h "_mm_empty()"
3864
3865     enable local_aligned_8 local_aligned_16
3866
3867     # check whether EBP is available on x86
3868     # As 'i' is stored on the stack, this program will crash
3869     # if the base pointer is used to access it because the
3870     # base pointer is cleared in the inline assembly code.
3871     check_exec_crash <<EOF && enable ebp_available
3872 volatile int i=0;
3873 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3874 return i;
3875 EOF
3876
3877     # check whether EBX is available on x86
3878     check_inline_asm ebx_available '""::"b"(0)' &&
3879         check_inline_asm ebx_available '"":::"%ebx"'
3880
3881     # check whether xmm clobbers are supported
3882     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3883
3884     # check whether binutils is new enough to compile SSSE3/MMXEXT
3885     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3886     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3887
3888     if ! disabled_any asm mmx yasm; then
3889         if check_cmd $yasmexe --version; then
3890             enabled x86_64 && yasm_extra="-m amd64"
3891             yasm_debug="-g dwarf2"
3892         elif check_cmd nasm -v; then
3893             yasmexe=nasm
3894             yasm_debug="-g -F dwarf"
3895             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3896         fi
3897
3898         YASMFLAGS="-f $objformat $yasm_extra"
3899         enabled pic               && append YASMFLAGS "-DPIC"
3900         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3901         case "$objformat" in
3902             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3903         esac
3904
3905         check_yasm "movbe ecx, [5]" && enable yasm ||
3906             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3907         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3908         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3909         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3910         check_yasm "CPU amdnop" || disable cpunop
3911     fi
3912
3913     case "$cpu" in
3914         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3915             disable fast_clz
3916         ;;
3917     esac
3918
3919 fi
3920
3921 check_ldflags -Wl,--as-needed
3922
3923 if check_func dlopen; then
3924     ldl=
3925 elif check_func dlopen -ldl; then
3926     ldl=-ldl
3927 fi
3928
3929 if ! disabled network; then
3930     check_func getaddrinfo $network_extralibs
3931     check_func getservbyport $network_extralibs
3932     check_func inet_aton $network_extralibs
3933
3934     check_type netdb.h "struct addrinfo"
3935     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3936     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3937     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3938     check_type poll.h "struct pollfd"
3939     check_type netinet/sctp.h "struct sctp_event_subscribe"
3940     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3941     check_type netinet/in.h "struct sockaddr_in6"
3942     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3943     check_type "sys/types.h sys/socket.h" socklen_t
3944
3945     # Prefer arpa/inet.h over winsock2
3946     if check_header arpa/inet.h ; then
3947         check_func closesocket
3948     elif check_header winsock2.h ; then
3949         check_func_headers winsock2.h closesocket -lws2 &&
3950             network_extralibs="-lws2" ||
3951         { check_func_headers winsock2.h closesocket -lws2_32 &&
3952             network_extralibs="-lws2_32"; } || disable winsock2_h network
3953         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3954
3955         check_type ws2tcpip.h socklen_t
3956         check_type ws2tcpip.h "struct addrinfo"
3957         check_type ws2tcpip.h "struct group_source_req"
3958         check_type ws2tcpip.h "struct ip_mreq_source"
3959         check_type ws2tcpip.h "struct ipv6_mreq"
3960         check_type winsock2.h "struct pollfd"
3961         check_struct winsock2.h "struct sockaddr" sa_len
3962         check_type ws2tcpip.h "struct sockaddr_in6"
3963         check_type ws2tcpip.h "struct sockaddr_storage"
3964     else
3965         disable network
3966     fi
3967 fi
3968
3969 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3970 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3971 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3972 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3973
3974 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3975 check_func  ${malloc_prefix}memalign            && enable memalign
3976 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3977
3978 check_func  fcntl
3979 check_func  fork
3980 check_func  gethrtime
3981 check_func  getopt
3982 check_func  getrusage
3983 check_func  gettimeofday
3984 check_func  isatty
3985 check_func  localtime_r
3986 check_func  mach_absolute_time
3987 check_func  mkstemp
3988 check_func  mmap
3989 check_func  mprotect
3990 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3991 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3992 check_func  sched_getaffinity
3993 check_func  setrlimit
3994 check_func  strerror_r
3995 check_func  strptime
3996 check_func  sysconf
3997 check_func  sysctl
3998 check_func  usleep
3999
4000 check_func_headers io.h setmode
4001 check_func_headers stdlib.h getenv
4002
4003 check_func_headers windows.h CoTaskMemFree -lole32
4004 check_func_headers windows.h GetProcessAffinityMask
4005 check_func_headers windows.h GetProcessTimes
4006 check_func_headers windows.h GetSystemTimeAsFileTime
4007 check_func_headers windows.h MapViewOfFile
4008 check_func_headers windows.h SetConsoleTextAttribute
4009 check_func_headers windows.h Sleep
4010 check_func_headers windows.h VirtualAlloc
4011
4012 check_header direct.h
4013 check_header dlfcn.h
4014 check_header dxva.h
4015 check_header dxva2api.h
4016 check_header io.h
4017 check_header mach/mach_time.h
4018 check_header malloc.h
4019 check_header poll.h
4020 check_header sys/mman.h
4021 check_header sys/param.h
4022 check_header sys/resource.h
4023 check_header sys/select.h
4024 check_header sys/time.h
4025 check_header sys/un.h
4026 check_header unistd.h
4027 check_header vdpau/vdpau.h
4028 check_header vdpau/vdpau_x11.h
4029 check_header VideoDecodeAcceleration/VDADecoder.h
4030 check_header windows.h
4031 check_header X11/extensions/XvMClib.h
4032
4033 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4034 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4035 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4036
4037 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4038
4039 if ! disabled w32threads && ! enabled pthreads; then
4040     check_func_headers "windows.h process.h" _beginthreadex &&
4041         enable w32threads || disable w32threads
4042 fi
4043
4044 # check for some common methods of building with pthread support
4045 # do this before the optional library checks as some of them require pthreads
4046 if ! disabled pthreads && ! enabled w32threads; then
4047     enable pthreads
4048     if check_func pthread_join -pthread; then
4049         add_cflags -pthread
4050         add_extralibs -pthread
4051     elif check_func pthread_join -pthreads; then
4052         add_cflags -pthreads
4053         add_extralibs -pthreads
4054     elif check_func pthread_join -lpthreadGC2; then
4055         add_extralibs -lpthreadGC2
4056     elif check_lib pthread.h pthread_join -lpthread; then
4057         :
4058     elif ! check_func pthread_join; then
4059         disable pthreads
4060     fi
4061 fi
4062
4063 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4064 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4065
4066 check_lib math.h sin -lm && LIBM="-lm"
4067 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4068
4069 atan2f_args=2
4070 ldexpf_args=2
4071 powf_args=2
4072
4073 for func in $MATH_FUNCS; do
4074     eval check_mathfunc $func \${${func}_args:-1}
4075 done
4076
4077 # these are off by default, so fail if requested and not available
4078 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4079                                { check_h