dsputil: Split off IDCT bits into their own context
[ffmpeg.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     gcrypt
1538     golomb
1539     gplv3
1540     h263dsp
1541     h264chroma
1542     h264dsp
1543     h264pred
1544     h264qpel
1545     hpeldsp
1546     huffman
1547     huffyuvdsp
1548     huffyuvencdsp
1549     idctdsp
1550     intrax8
1551     lgplv3
1552     lpc
1553     mpeg_er
1554     mpegaudio
1555     mpegaudiodsp
1556     mpegvideo
1557     mpegvideoenc
1558     nettle
1559     qpeldsp
1560     rangecoder
1561     riffdec
1562     riffenc
1563     rtpdec
1564     rtpenc_chain
1565     sinewin
1566     tpeldsp
1567     videodsp
1568     vp3dsp
1569 "
1570
1571 CMDLINE_SELECT="
1572     $ARCH_EXT_LIST
1573     $CONFIG_LIST
1574     $HAVE_LIST_CMDLINE
1575     $THREADS_LIST
1576     asm
1577     cross_compile
1578     debug
1579     extra_warnings
1580     logging
1581     lto
1582     optimizations
1583 "
1584
1585 PATHS_LIST="
1586     bindir
1587     datadir
1588     docdir
1589     incdir
1590     libdir
1591     mandir
1592     prefix
1593     shlibdir
1594 "
1595
1596 CMDLINE_SET="
1597     $PATHS_LIST
1598     ar
1599     arch
1600     as
1601     build_suffix
1602     cc
1603     cpu
1604     cross_prefix
1605     dep_cc
1606     extra_version
1607     host_cc
1608     host_cflags
1609     host_ld
1610     host_ldflags
1611     host_libs
1612     host_os
1613     ld
1614     logfile
1615     malloc_prefix
1616     nm
1617     optflags
1618     pkg_config
1619     pkg_config_flags
1620     random_seed
1621     samples
1622     sysinclude
1623     sysroot
1624     target_exec
1625     target_os
1626     target_path
1627     target_samples
1628     toolchain
1629 "
1630
1631 CMDLINE_APPEND="
1632     extra_cflags
1633     host_cppflags
1634 "
1635
1636 # code dependency declarations
1637
1638 # architecture extensions
1639
1640 armv5te_deps="arm"
1641 armv6_deps="arm"
1642 armv6t2_deps="arm"
1643 armv8_deps="aarch64"
1644 neon_deps_any="aarch64 arm"
1645 vfp_deps_any="aarch64 arm"
1646 vfpv3_deps="vfp"
1647
1648 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1649
1650 altivec_deps="ppc"
1651 ppc4xx_deps="ppc"
1652
1653 cpunop_deps="i686"
1654 x86_64_select="i686"
1655 x86_64_suggest="fast_cmov"
1656
1657 amd3dnow_deps="mmx"
1658 amd3dnowext_deps="amd3dnow"
1659 i686_deps="x86"
1660 mmx_deps="x86"
1661 mmxext_deps="mmx"
1662 sse_deps="mmxext"
1663 sse2_deps="sse"
1664 sse3_deps="sse2"
1665 ssse3_deps="sse3"
1666 sse4_deps="ssse3"
1667 sse42_deps="sse4"
1668 avx_deps="sse42"
1669 xop_deps="avx"
1670 fma3_deps="avx"
1671 fma4_deps="avx"
1672 avx2_deps="avx"
1673
1674 mmx_external_deps="yasm"
1675 mmx_inline_deps="inline_asm"
1676 mmx_suggest="mmx_external mmx_inline"
1677
1678 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1679     eval dep=\$${ext}_deps
1680     eval ${ext}_external_deps='"${dep}_external"'
1681     eval ${ext}_inline_deps='"${dep}_inline"'
1682     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1683 done
1684
1685 aligned_stack_if_any="aarch64 ppc x86"
1686 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1687 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1688 fast_unaligned_if_any="aarch64 ppc x86"
1689
1690 need_memalign="altivec neon sse"
1691
1692 # system capabilities
1693 log2_deps="!libc_msvcrt"
1694
1695 symver_if_any="symver_asm_label symver_gnu_asm"
1696
1697 # threading support
1698 atomics_gcc_if="sync_val_compare_and_swap"
1699 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1700 atomics_win32_if="MemoryBarrier"
1701 atomics_native_if_any="$ATOMICS_LIST"
1702 w32threads_deps="atomics_native"
1703 threads_if_any="$THREADS_LIST"
1704
1705 # subsystems
1706 dct_select="rdft"
1707 dsputil_select="idctdsp"
1708 error_resilience_select="dsputil"
1709 intrax8_select="error_resilience"
1710 mdct_select="fft"
1711 rdft_select="fft"
1712 mpeg_er_select="error_resilience"
1713 mpegaudio_select="mpegaudiodsp"
1714 mpegaudiodsp_select="dct"
1715 mpegvideo_select="blockdsp dsputil hpeldsp idctdsp videodsp"
1716 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
1717
1718 # decoders / encoders
1719 aac_decoder_select="mdct sinewin"
1720 aac_encoder_select="audio_frame_queue mdct sinewin"
1721 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1722 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
1723 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
1724 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
1725 aic_decoder_select="golomb idctdsp"
1726 alac_encoder_select="lpc"
1727 als_decoder_select="bswapdsp"
1728 amrnb_decoder_select="lsp"
1729 amrwb_decoder_select="lsp"
1730 amv_decoder_select="sp5x_decoder"
1731 ape_decoder_select="bswapdsp"
1732 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1733 asv1_encoder_select="bswapdsp dsputil"
1734 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1735 asv2_encoder_select="bswapdsp dsputil"
1736 atrac1_decoder_select="mdct sinewin"
1737 atrac3_decoder_select="mdct"
1738 atrac3p_decoder_select="mdct sinewin"
1739 bink_decoder_select="blockdsp hpeldsp"
1740 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1741 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1742 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1743 cllc_decoder_select="bswapdsp"
1744 comfortnoise_encoder_select="lpc"
1745 cook_decoder_select="audiodsp mdct sinewin"
1746 cscd_decoder_select="lzo"
1747 cscd_decoder_suggest="zlib"
1748 dca_decoder_select="mdct"
1749 dnxhd_decoder_select="blockdsp idctdsp"
1750 dnxhd_encoder_select="aandcttables blockdsp dsputil idctdsp mpegvideoenc"
1751 dvvideo_decoder_select="idctdsp"
1752 dvvideo_encoder_select="dsputil"
1753 dxa_decoder_deps="zlib"
1754 eac3_decoder_select="ac3_decoder"
1755 eac3_encoder_select="ac3_encoder"
1756 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1757 eatgq_decoder_select="aandcttables idctdsp"
1758 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1759 exr_decoder_deps="zlib"
1760 ffv1_decoder_select="golomb rangecoder"
1761 ffv1_encoder_select="rangecoder"
1762 ffvhuff_decoder_select="huffyuv_decoder"
1763 ffvhuff_encoder_select="huffyuv_encoder"
1764 fic_decoder_select="golomb"
1765 flac_decoder_select="golomb"
1766 flac_encoder_select="bswapdsp golomb lpc"
1767 flashsv_decoder_deps="zlib"
1768 flashsv_encoder_deps="zlib"
1769 flashsv2_decoder_deps="zlib"
1770 flv_decoder_select="h263_decoder"
1771 flv_encoder_select="h263_encoder"
1772 fourxm_decoder_select="blockdsp bswapdsp"
1773 fraps_decoder_select="bswapdsp huffman"
1774 g2m_decoder_deps="zlib"
1775 g2m_decoder_select="blockdsp idctdsp"
1776 h261_decoder_select="mpeg_er mpegvideo"
1777 h261_encoder_select="aandcttables mpegvideoenc"
1778 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1779 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1780 h263i_decoder_select="h263_decoder"
1781 h263p_encoder_select="h263_encoder"
1782 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1783 h264_decoder_suggest="error_resilience"
1784 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1785 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1786 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1787 iac_decoder_select="imc_decoder"
1788 imc_decoder_select="bswapdsp fft mdct sinewin"
1789 indeo3_decoder_select="hpeldsp"
1790 interplay_video_decoder_select="hpeldsp"
1791 jpegls_decoder_select="golomb mjpeg_decoder"
1792 jpegls_encoder_select="golomb"
1793 jv_decoder_select="blockdsp"
1794 lagarith_decoder_select="huffyuvdsp"
1795 ljpeg_encoder_select="aandcttables idctdsp"
1796 loco_decoder_select="golomb"
1797 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1798 metasound_decoder_select="lsp mdct sinewin"
1799 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1800 mjpeg_decoder_select="blockdsp hpeldsp idctdsp"
1801 mjpeg_encoder_select="aandcttables mpegvideoenc"
1802 mjpegb_decoder_select="mjpeg_decoder"
1803 mlp_decoder_select="mlp_parser"
1804 motionpixels_decoder_select="bswapdsp"
1805 mp1_decoder_select="mpegaudio"
1806 mp1float_decoder_select="mpegaudio"
1807 mp2_decoder_select="mpegaudio"
1808 mp2float_decoder_select="mpegaudio"
1809 mp3_decoder_select="mpegaudio"
1810 mp3adu_decoder_select="mpegaudio"
1811 mp3adufloat_decoder_select="mpegaudio"
1812 mp3float_decoder_select="mpegaudio"
1813 mp3on4_decoder_select="mpegaudio"
1814 mp3on4float_decoder_select="mpegaudio"
1815 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1816 mpc8_decoder_select="mpegaudiodsp"
1817 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1818 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1819 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1820 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1821 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1822 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1823 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1824 mpeg4_encoder_select="h263_encoder"
1825 msmpeg4v1_decoder_select="h263_decoder"
1826 msmpeg4v2_decoder_select="h263_decoder"
1827 msmpeg4v2_encoder_select="h263_encoder"
1828 msmpeg4v3_decoder_select="h263_decoder"
1829 msmpeg4v3_encoder_select="h263_encoder"
1830 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1831 mxpeg_decoder_select="mjpeg_decoder"
1832 nellymoser_decoder_select="mdct sinewin"
1833 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1834 nuv_decoder_select="idctdsp lzo"
1835 on2avc_decoder_select="mdct"
1836 opus_decoder_deps="avresample"
1837 png_decoder_deps="zlib"
1838 png_encoder_deps="zlib"
1839 png_encoder_select="huffyuvencdsp"
1840 prores_decoder_select="idctdsp"
1841 prores_encoder_select="dsputil"
1842 qcelp_decoder_select="lsp"
1843 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1844 ra_144_encoder_select="audio_frame_queue lpc"
1845 ralf_decoder_select="golomb"
1846 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1847 rv10_encoder_select="h263_encoder"
1848 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1849 rv20_encoder_select="h263_encoder"
1850 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1851 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1852 shorten_decoder_select="golomb"
1853 sipr_decoder_select="lsp"
1854 sp5x_decoder_select="mjpeg_decoder"
1855 svq1_decoder_select="hpeldsp"
1856 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1857 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1858 svq3_decoder_suggest="zlib"
1859 tak_decoder_select="audiodsp"
1860 theora_decoder_select="vp3_decoder"
1861 thp_decoder_select="mjpeg_decoder"
1862 tiff_decoder_suggest="zlib"
1863 tiff_encoder_suggest="zlib"
1864 truehd_decoder_select="mlp_decoder"
1865 truemotion2_decoder_select="bswapdsp"
1866 truespeech_decoder_select="bswapdsp"
1867 tscc_decoder_deps="zlib"
1868 twinvq_decoder_select="mdct lsp sinewin"
1869 utvideo_decoder_select="bswapdsp"
1870 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1871 vble_decoder_select="huffyuvdsp"
1872 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
1873 vc1image_decoder_select="vc1_decoder"
1874 vorbis_decoder_select="mdct"
1875 vorbis_encoder_select="mdct"
1876 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1877 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1878 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1879 vp6a_decoder_select="vp6_decoder"
1880 vp6f_decoder_select="vp6_decoder"
1881 vp7_decoder_select="h264pred videodsp"
1882 vp8_decoder_select="h264pred videodsp"
1883 vp9_decoder_select="videodsp"
1884 webp_decoder_select="vp8_decoder"
1885 wmapro_decoder_select="mdct sinewin"
1886 wmav1_decoder_select="mdct sinewin"
1887 wmav1_encoder_select="mdct sinewin"
1888 wmav2_decoder_select="mdct sinewin"
1889 wmav2_encoder_select="mdct sinewin"
1890 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1891 wmv1_decoder_select="h263_decoder"
1892 wmv1_encoder_select="h263_encoder"
1893 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1894 wmv2_encoder_select="h263_encoder"
1895 wmv3_decoder_select="vc1_decoder"
1896 wmv3image_decoder_select="wmv3_decoder"
1897 zerocodec_decoder_deps="zlib"
1898 zlib_decoder_deps="zlib"
1899 zlib_encoder_deps="zlib"
1900 zmbv_decoder_deps="zlib"
1901 zmbv_encoder_deps="zlib"
1902
1903 # hardware accelerators
1904 dxva2_deps="dxva2api_h"
1905 vaapi_deps="va_va_h"
1906 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1907 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1908 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1909
1910 h263_vaapi_hwaccel_deps="vaapi"
1911 h263_vaapi_hwaccel_select="h263_decoder"
1912 h263_vdpau_hwaccel_deps="vdpau"
1913 h263_vdpau_hwaccel_select="h263_decoder"
1914 h264_dxva2_hwaccel_deps="dxva2"
1915 h264_dxva2_hwaccel_select="h264_decoder"
1916 h264_vaapi_hwaccel_deps="vaapi"
1917 h264_vaapi_hwaccel_select="h264_decoder"
1918 h264_vda_hwaccel_deps="vda"
1919 h264_vda_hwaccel_select="h264_decoder"
1920 h264_vda_old_hwaccel_deps="vda"
1921 h264_vda_old_hwaccel_select="h264_decoder"
1922 h264_vdpau_hwaccel_deps="vdpau"
1923 h264_vdpau_hwaccel_select="h264_decoder"
1924 mpeg1_vdpau_hwaccel_deps="vdpau"
1925 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1926 mpeg2_dxva2_hwaccel_deps="dxva2"
1927 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1928 mpeg2_vaapi_hwaccel_deps="vaapi"
1929 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1930 mpeg2_vdpau_hwaccel_deps="vdpau"
1931 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1932 mpeg4_vaapi_hwaccel_deps="vaapi"
1933 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1934 mpeg4_vdpau_hwaccel_deps="vdpau"
1935 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1936 vc1_dxva2_hwaccel_deps="dxva2"
1937 vc1_dxva2_hwaccel_select="vc1_decoder"
1938 vc1_vaapi_hwaccel_deps="vaapi"
1939 vc1_vaapi_hwaccel_select="vc1_decoder"
1940 vc1_vdpau_hwaccel_deps="vdpau"
1941 vc1_vdpau_hwaccel_select="vc1_decoder"
1942 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1943 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1944 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1945
1946 # parsers
1947 h264_parser_select="h264_decoder"
1948 mpegvideo_parser_select="mpegvideo"
1949 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
1950 vc1_parser_select="mpegvideo"
1951
1952 # external libraries
1953 libfaac_encoder_deps="libfaac"
1954 libfaac_encoder_select="audio_frame_queue"
1955 libfdk_aac_decoder_deps="libfdk_aac"
1956 libfdk_aac_encoder_deps="libfdk_aac"
1957 libfdk_aac_encoder_select="audio_frame_queue"
1958 libgsm_decoder_deps="libgsm"
1959 libgsm_encoder_deps="libgsm"
1960 libgsm_ms_decoder_deps="libgsm"
1961 libgsm_ms_encoder_deps="libgsm"
1962 libilbc_decoder_deps="libilbc"
1963 libilbc_encoder_deps="libilbc"
1964 libmp3lame_encoder_deps="libmp3lame"
1965 libmp3lame_encoder_select="audio_frame_queue"
1966 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1967 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1968 libopencore_amrnb_encoder_select="audio_frame_queue"
1969 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1970 libopenjpeg_decoder_deps="libopenjpeg"
1971 libopenjpeg_encoder_deps="libopenjpeg"
1972 libopus_decoder_deps="libopus"
1973 libopus_encoder_deps="libopus"
1974 libopus_encoder_select="audio_frame_queue"
1975 libschroedinger_decoder_deps="libschroedinger"
1976 libschroedinger_encoder_deps="libschroedinger"
1977 libspeex_decoder_deps="libspeex"
1978 libspeex_encoder_deps="libspeex"
1979 libspeex_encoder_select="audio_frame_queue"
1980 libtheora_encoder_deps="libtheora"
1981 libtwolame_encoder_deps="libtwolame"
1982 libvo_aacenc_encoder_deps="libvo_aacenc"
1983 libvo_aacenc_encoder_select="audio_frame_queue"
1984 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1985 libvorbis_encoder_deps="libvorbis"
1986 libvorbis_encoder_select="audio_frame_queue"
1987 libvpx_vp8_decoder_deps="libvpx"
1988 libvpx_vp8_encoder_deps="libvpx"
1989 libvpx_vp9_decoder_deps="libvpx"
1990 libvpx_vp9_encoder_deps="libvpx"
1991 libwavpack_encoder_deps="libwavpack"
1992 libwebp_encoder_deps="libwebp"
1993 libx264_encoder_deps="libx264"
1994 libx265_encoder_deps="libx265"
1995 libxavs_encoder_deps="libxavs"
1996 libxvid_encoder_deps="libxvid"
1997
1998 # demuxers / muxers
1999 ac3_demuxer_select="ac3_parser"
2000 asf_demuxer_select="riffdec"
2001 asf_muxer_select="riffenc"
2002 asf_stream_muxer_select="asf_muxer"
2003 avi_demuxer_select="riffdec"
2004 avi_muxer_select="riffenc"
2005 avisynth_demuxer_deps="avisynth"
2006 avisynth_demuxer_select="riffdec"
2007 caf_demuxer_select="riffdec"
2008 dirac_demuxer_select="dirac_parser"
2009 dxa_demuxer_select="riffdec"
2010 eac3_demuxer_select="ac3_parser"
2011 f4v_muxer_select="mov_muxer"
2012 flac_demuxer_select="flac_parser"
2013 hds_muxer_select="flv_muxer"
2014 hls_muxer_select="mpegts_muxer"
2015 ipod_muxer_select="mov_muxer"
2016 ismv_muxer_select="mov_muxer"
2017 matroska_audio_muxer_select="matroska_muxer"
2018 matroska_demuxer_select="riffdec"
2019 matroska_demuxer_suggest="bzlib lzo zlib"
2020 matroska_muxer_select="riffenc"
2021 mmf_muxer_select="riffenc"
2022 mov_demuxer_select="riffdec"
2023 mov_demuxer_suggest="zlib"
2024 mov_muxer_select="riffenc rtpenc_chain"
2025 mp3_demuxer_select="mpegaudio_parser"
2026 mp4_muxer_select="mov_muxer"
2027 mpegts_muxer_select="adts_muxer latm_muxer"
2028 mpegtsraw_demuxer_select="mpegts_demuxer"
2029 mxf_d10_muxer_select="mxf_muxer"
2030 nut_muxer_select="riffenc"
2031 nuv_demuxer_select="riffdec"
2032 ogg_demuxer_select="golomb"
2033 psp_muxer_select="mov_muxer"
2034 rtp_demuxer_select="sdp_demuxer"
2035 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2036 rtsp_demuxer_select="http_protocol rtpdec"
2037 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2038 sap_demuxer_select="sdp_demuxer"
2039 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2040 sdp_demuxer_select="rtpdec"
2041 smoothstreaming_muxer_select="ismv_muxer"
2042 spdif_muxer_select="aac_parser"
2043 tak_demuxer_select="tak_parser"
2044 tg2_muxer_select="mov_muxer"
2045 tgp_muxer_select="mov_muxer"
2046 w64_demuxer_select="wav_demuxer"
2047 wav_demuxer_select="riffdec"
2048 wav_muxer_select="riffenc"
2049 webm_muxer_select="riffenc"
2050 wtv_demuxer_select="riffdec"
2051 xmv_demuxer_select="riffdec"
2052 xwma_demuxer_select="riffdec"
2053
2054 # indevs / outdevs
2055 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2056 alsa_outdev_deps="alsa_asoundlib_h"
2057 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2058 dv1394_indev_deps="dv1394"
2059 dv1394_indev_select="dv_demuxer"
2060 fbdev_indev_deps="linux_fb_h"
2061 jack_indev_deps="jack_jack_h pthreads"
2062 libcdio_indev_deps="libcdio"
2063 libdc1394_indev_deps="libdc1394"
2064 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2065 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2066 pulse_indev_deps="libpulse"
2067 sndio_indev_deps="sndio_h"
2068 sndio_outdev_deps="sndio_h"
2069 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2070 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2071 vfwcap_indev_extralibs="-lavicap32"
2072 x11grab_indev_deps="x11grab XShmCreateImage"
2073
2074 # protocols
2075 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2076 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2077 ffrtmpcrypt_protocol_select="tcp_protocol"
2078 ffrtmphttp_protocol_deps="!librtmp_protocol"
2079 ffrtmphttp_protocol_select="http_protocol"
2080 gopher_protocol_select="network"
2081 http_protocol_select="tcp_protocol"
2082 httpproxy_protocol_select="tcp_protocol"
2083 https_protocol_select="tls_protocol"
2084 librtmp_protocol_deps="librtmp"
2085 librtmpe_protocol_deps="librtmp"
2086 librtmps_protocol_deps="librtmp"
2087 librtmpt_protocol_deps="librtmp"
2088 librtmpte_protocol_deps="librtmp"
2089 mmsh_protocol_select="http_protocol"
2090 mmst_protocol_select="network"
2091 rtmp_protocol_deps="!librtmp_protocol"
2092 rtmp_protocol_select="tcp_protocol"
2093 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2094 rtmps_protocol_deps="!librtmp_protocol"
2095 rtmps_protocol_select="tls_protocol"
2096 rtmpt_protocol_select="ffrtmphttp_protocol"
2097 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2098 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2099 rtp_protocol_select="udp_protocol"
2100 sctp_protocol_deps="struct_sctp_event_subscribe"
2101 sctp_protocol_select="network"
2102 srtp_protocol_select="rtp_protocol"
2103 tcp_protocol_select="network"
2104 tls_protocol_deps_any="openssl gnutls"
2105 tls_protocol_select="tcp_protocol"
2106 udp_protocol_select="network"
2107 unix_protocol_deps="sys_un_h"
2108 unix_protocol_select="network"
2109
2110 # filters
2111 blackframe_filter_deps="gpl"
2112 boxblur_filter_deps="gpl"
2113 bs2b_filter_deps="libbs2b"
2114 cropdetect_filter_deps="gpl"
2115 delogo_filter_deps="gpl"
2116 drawtext_filter_deps="libfreetype"
2117 frei0r_filter_deps="frei0r dlopen"
2118 frei0r_filter_extralibs='$ldl'
2119 frei0r_src_filter_deps="frei0r dlopen"
2120 frei0r_src_filter_extralibs='$ldl'
2121 hqdn3d_filter_deps="gpl"
2122 interlace_filter_deps="gpl"
2123 ocv_filter_deps="libopencv"
2124 resample_filter_deps="avresample"
2125 scale_filter_deps="swscale"
2126
2127 # examples
2128 avcodec_example_deps="avcodec avutil"
2129 filter_audio_example_deps="avfilter avutil"
2130 metadata_example_deps="avformat avutil"
2131 output_example_deps="avcodec avformat avutil swscale"
2132 transcode_aac_example_deps="avcodec avformat avresample"
2133
2134 # libraries, in linking order
2135 avcodec_deps="avutil"
2136 avdevice_deps="avformat avcodec avutil"
2137 avfilter_deps="avutil"
2138 avformat_deps="avcodec avutil"
2139 avresample_deps="avutil"
2140 swscale_deps="avutil"
2141
2142 # programs
2143 avconv_deps="avcodec avfilter avformat avresample swscale"
2144 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2145                fps_filter null_filter resample_filter scale_filter
2146                setpts_filter trim_filter"
2147 avplay_deps="avcodec avformat avresample swscale sdl"
2148 avplay_libs='$sdl_libs'
2149 avplay_select="rdft"
2150 avprobe_deps="avcodec avformat"
2151
2152 # documentation
2153 pod2man_deps="doc"
2154 texi2html_deps="doc"
2155
2156 # default parameters
2157
2158 logfile="config.log"
2159
2160 # installation paths
2161 prefix_default="/usr/local"
2162 bindir_default='${prefix}/bin'
2163 datadir_default='${prefix}/share/avconv'
2164 docdir_default='${prefix}/share/doc/libav'
2165 incdir_default='${prefix}/include'
2166 libdir_default='${prefix}/lib'
2167 mandir_default='${prefix}/share/man'
2168 shlibdir_default="$libdir_default"
2169
2170 # toolchain
2171 ar_default="ar"
2172 cc_default="gcc"
2173 host_cc_default="gcc"
2174 cp_f="cp -f"
2175 ln_s="ln -s -f"
2176 nm_default="nm -g"
2177 objformat="elf"
2178 pkg_config_default=pkg-config
2179 ranlib="ranlib"
2180 strip="strip"
2181 yasmexe="yasm"
2182
2183 nogas=":"
2184
2185 # machine
2186 arch_default=$(uname -m)
2187 cpu="generic"
2188
2189 # OS
2190 target_os_default=$(tolower $(uname -s))
2191 host_os=$target_os_default
2192
2193 # configurable options
2194 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2195
2196 enable asm
2197 enable debug
2198 enable doc
2199 enable optimizations
2200 enable safe_bitstream_reader
2201 enable static
2202 enable swscale_alpha
2203
2204 # By default, enable only those hwaccels that have no external dependencies.
2205 enable dxva2 vdpau
2206
2207 # build settings
2208 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2209 LIBPREF="lib"
2210 LIBSUF=".a"
2211 FULLNAME='$(NAME)$(BUILDSUF)'
2212 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2213 SLIBPREF="lib"
2214 SLIBSUF=".so"
2215 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2216 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2217 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2218 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2219 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2220 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2221
2222 asflags_filter=echo
2223 cflags_filter=echo
2224 ldflags_filter=echo
2225
2226 AS_C='-c'
2227 AS_O='-o $@'
2228 CC_C='-c'
2229 CC_E='-E -o $@'
2230 CC_O='-o $@'
2231 LD_O='-o $@'
2232 LD_LIB='-l%'
2233 LD_PATH='-L'
2234 HOSTCC_C='-c'
2235 HOSTCC_E='-E -o $@'
2236 HOSTCC_O='-o $@'
2237 HOSTLD_O='-o $@'
2238
2239 host_libs='-lm'
2240 host_cflags_filter=echo
2241 host_ldflags_filter=echo
2242
2243 target_path='$(CURDIR)'
2244
2245 # since the object filename is not given with the -MM flag, the compiler
2246 # is only able to print the basename, and we must add the path ourselves
2247 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2248 DEPFLAGS='-MM'
2249
2250 # find source path
2251 if test -f configure; then
2252     source_path=.
2253 else
2254     source_path=$(cd $(dirname "$0"); pwd)
2255     echo "$source_path" | grep -q '[[:blank:]]' &&
2256         die "Out of tree builds are impossible with whitespace in source path."
2257     test -e "$source_path/config.h" &&
2258         die "Out of tree builds are impossible with config.h in source dir."
2259 fi
2260
2261 for v in "$@"; do
2262     r=${v#*=}
2263     l=${v%"$r"}
2264     r=$(sh_quote "$r")
2265     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2266 done
2267
2268 find_things(){
2269     thing=$1
2270     pattern=$2
2271     file=$source_path/$3
2272     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2273 }
2274
2275 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2276 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2277 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2278 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2279 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2280 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2281 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2282 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2283 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2284 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2285 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2286
2287 ALL_COMPONENTS="
2288     $BSF_LIST
2289     $DECODER_LIST
2290     $DEMUXER_LIST
2291     $ENCODER_LIST
2292     $FILTER_LIST
2293     $HWACCEL_LIST
2294     $INDEV_LIST
2295     $MUXER_LIST
2296     $OUTDEV_LIST
2297     $PARSER_LIST
2298     $PROTOCOL_LIST
2299 "
2300
2301 for n in $COMPONENT_LIST; do
2302     v=$(toupper ${n%s})_LIST
2303     eval enable \$$v
2304     eval ${n}_if_any="\$$v"
2305 done
2306
2307 enable $ARCH_EXT_LIST
2308
2309 die_unknown(){
2310     echo "Unknown option \"$1\"."
2311     echo "See $0 --help for available options."
2312     exit 1
2313 }
2314
2315 print_3_columns() {
2316     cat | tr ' ' '\n' | sort | pr -r -3 -t
2317 }
2318
2319 show_list() {
2320     suffix=_$1
2321     shift
2322     echo $* | sed s/$suffix//g | print_3_columns
2323     exit 0
2324 }
2325
2326 rand_list(){
2327     IFS=', '
2328     set -- $*
2329     unset IFS
2330     for thing; do
2331         comp=${thing%:*}
2332         prob=${thing#$comp}
2333         prob=${prob#:}
2334         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2335         echo "prob ${prob:-0.5}"
2336         printf '%s\n' $comp
2337     done
2338 }
2339
2340 do_random(){
2341     action=$1
2342     shift
2343     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2344     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2345 }
2346
2347 for opt do
2348     optval="${opt#*=}"
2349     case "$opt" in
2350         --extra-ldflags=*)
2351             add_ldflags $optval
2352         ;;
2353         --extra-libs=*)
2354             add_extralibs $optval
2355         ;;
2356         --disable-devices)
2357             disable $INDEV_LIST $OUTDEV_LIST
2358         ;;
2359         --enable-debug=*)
2360             debuglevel="$optval"
2361         ;;
2362         --disable-programs)
2363             disable $PROGRAM_LIST
2364         ;;
2365         --disable-everything)
2366             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2367         ;;
2368         --disable-all)
2369             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2370             disable $LIBRARY_LIST $PROGRAM_LIST doc
2371         ;;
2372         --enable-random|--disable-random)
2373             action=${opt%%-random}
2374             do_random ${action#--} $COMPONENT_LIST
2375         ;;
2376         --enable-random=*|--disable-random=*)
2377             action=${opt%%-random=*}
2378             do_random ${action#--} $optval
2379         ;;
2380         --enable-*=*|--disable-*=*)
2381             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2382             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2383             eval list=\$$(toupper $thing)_LIST
2384             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2385             $action $(filter "$name" $list)
2386         ;;
2387         --enable-avserver|--disable-avserver*)
2388             warn "avserver has been removed, the ${opt} option is only"\
2389                  "provided for compatibility and will be removed in the future"
2390         ;;
2391         --enable-?*|--disable-?*)
2392             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2393             if is_in $option $COMPONENT_LIST; then
2394                 test $action = disable && action=unset
2395                 eval $action \$$(toupper ${option%s})_LIST
2396             elif is_in $option $CMDLINE_SELECT; then
2397                 $action $option
2398             else
2399                 die_unknown $opt
2400             fi
2401         ;;
2402         --list-*)
2403             NAME="${opt#--list-}"
2404             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2405             NAME=${NAME%s}
2406             eval show_list $NAME \$$(toupper $NAME)_LIST
2407         ;;
2408         --help|-h) show_help
2409         ;;
2410         *)
2411             optname="${opt%%=*}"
2412             optname="${optname#--}"
2413             optname=$(echo "$optname" | sed 's/-/_/g')
2414             if is_in $optname $CMDLINE_SET; then
2415                 eval $optname='$optval'
2416             elif is_in $optname $CMDLINE_APPEND; then
2417                 append $optname "$optval"
2418             else
2419                 die_unknown $opt
2420             fi
2421         ;;
2422     esac
2423 done
2424
2425 disabled logging && logfile=/dev/null
2426
2427 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2428 set >> $logfile
2429
2430 test -n "$cross_prefix" && enable cross_compile
2431
2432 if enabled cross_compile; then
2433     test -n "$arch" && test -n "$target_os" ||
2434         die "Must specify target arch and OS when cross-compiling"
2435 fi
2436
2437 ar_default="${cross_prefix}${ar_default}"
2438 cc_default="${cross_prefix}${cc_default}"
2439 nm_default="${cross_prefix}${nm_default}"
2440 pkg_config_default="${cross_prefix}${pkg_config_default}"
2441 ranlib="${cross_prefix}${ranlib}"
2442 strip="${cross_prefix}${strip}"
2443
2444 sysinclude_default="${sysroot}/usr/include"
2445
2446 case "$toolchain" in
2447     clang-asan)
2448         cc_default="clang"
2449         add_cflags  -fsanitize=address
2450         add_ldflags -fsanitize=address
2451     ;;
2452     clang-tsan)
2453         cc_default="clang"
2454         add_cflags  -fsanitize=thread -pie
2455         add_ldflags -fsanitize=thread -pie
2456     ;;
2457     clang-usan)
2458         cc_default="clang"
2459         add_cflags  -fsanitize=undefined -O1
2460         add_ldflags -fsanitize=undefined
2461     ;;
2462     gcc-asan)
2463         cc_default="gcc"
2464         add_cflags  -fsanitize=address
2465         add_ldflags -fsanitize=address
2466     ;;
2467     gcc-tsan)
2468         cc_default="gcc"
2469         add_cflags  -fsanitize=thread -pie -fPIC
2470         add_ldflags -fsanitize=thread -pie -fPIC
2471     ;;
2472     gcc-usan)
2473         cc_default="gcc"
2474         add_cflags  -fsanitize=undefined
2475         add_ldflags -fsanitize=undefined
2476     ;;
2477     valgrind-massif)
2478         target_exec_default="valgrind"
2479         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2480     ;;
2481     valgrind-memcheck)
2482         target_exec_default="valgrind"
2483         target_exec_args="--track-origins=yes --leak-check=full"
2484     ;;
2485     msvc)
2486         # Check whether the current MSVC version needs the C99 converter.
2487         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2488         # support enough of C99 to build libav. Default to the new
2489         # behaviour if the regexp was unable to match anything, since this
2490         # successfully parses the version number of existing supported
2491         # versions that require the converter (MSVC 2010 and 2012).
2492         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2493         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2494             cc_default="cl"
2495         else
2496             cc_default="c99wrap cl"
2497         fi
2498         ld_default="link"
2499         nm_default="dumpbin -symbols"
2500         ar_default="lib"
2501         target_os_default="win32"
2502         # Use a relative path for TMPDIR. This makes sure all the
2503         # ffconf temp files are written with a relative path, avoiding
2504         # issues with msys/win32 path conversion for MSVC parameters
2505         # such as -Fo<file> or -out:<file>.
2506         TMPDIR=.
2507     ;;
2508     icl)
2509         cc_default="icl"
2510         ld_default="xilink"
2511         nm_default="dumpbin -symbols"
2512         ar_default="xilib"
2513         target_os_default="win32"
2514         TMPDIR=.
2515     ;;
2516     gcov)
2517         add_cflags  -fprofile-arcs -ftest-coverage
2518         add_ldflags -fprofile-arcs -ftest-coverage
2519     ;;
2520     hardened)
2521         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2522         add_ldflags -Wl,-z,relro -Wl,-z,now
2523     ;;
2524     ?*)
2525         die "Unknown toolchain $toolchain"
2526     ;;
2527 esac
2528
2529 set_default arch cc pkg_config sysinclude target_exec target_os
2530 enabled cross_compile || host_cc_default=$cc
2531 set_default host_cc
2532
2533 if ! $pkg_config --version >/dev/null 2>&1; then
2534     warn "$pkg_config not found, library detection may fail."
2535     pkg_config=false
2536 fi
2537
2538 exesuf() {
2539     case $1 in
2540         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2541     esac
2542 }
2543
2544 EXESUF=$(exesuf $target_os)
2545 HOSTEXESUF=$(exesuf $host_os)
2546
2547 # set temporary file name
2548 : ${TMPDIR:=$TEMPDIR}
2549 : ${TMPDIR:=$TMP}
2550 : ${TMPDIR:=/tmp}
2551
2552 if ! check_cmd mktemp -u XXXXXX; then
2553     # simple replacement for missing mktemp
2554     # NOT SAFE FOR GENERAL USE
2555     mktemp(){
2556         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2557     }
2558 fi
2559
2560 tmpfile(){
2561     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2562         (set -C; exec > $tmp) 2>/dev/null ||
2563         die "Unable to create temporary file in $TMPDIR."
2564     append TMPFILES $tmp
2565     eval $1=$tmp
2566 }
2567
2568 trap 'rm -f -- $TMPFILES' EXIT
2569
2570 tmpfile TMPASM .asm
2571 tmpfile TMPC   .c
2572 tmpfile TMPE   $EXESUF
2573 tmpfile TMPH   .h
2574 tmpfile TMPO   .o
2575 tmpfile TMPS   .S
2576 tmpfile TMPSH  .sh
2577 tmpfile TMPV   .ver
2578
2579 unset -f mktemp
2580
2581 chmod +x $TMPE
2582
2583 # make sure we can execute files in $TMPDIR
2584 cat > $TMPSH 2>> $logfile <<EOF
2585 #! /bin/sh
2586 EOF
2587 chmod +x $TMPSH >> $logfile 2>&1
2588 if ! $TMPSH >> $logfile 2>&1; then
2589     cat <<EOF
2590 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2591 variable to another directory and make sure that it is not mounted noexec.
2592 EOF
2593     die "Sanity test failed."
2594 fi
2595
2596 ccc_flags(){
2597     for flag; do
2598         case $flag in
2599             -std=c99)           echo -c99                       ;;
2600             -mcpu=*)            echo -arch ${flag#*=}           ;;
2601             -mieee)             echo -ieee                      ;;
2602             -O*|-fast)          echo $flag                      ;;
2603             -fno-math-errno)    echo -assume nomath_errno       ;;
2604             -g)                 echo -g3                        ;;
2605             -Wall)              echo -msg_enable level2         ;;
2606             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2607             -Wl,*)              echo $flag                      ;;
2608             -f*|-W*)                                            ;;
2609             *)                  echo $flag                      ;;
2610         esac
2611    done
2612 }
2613
2614 cparser_flags(){
2615     for flag; do
2616         case $flag in
2617             -Wno-switch)             echo -Wno-switch-enum ;;
2618             -Wno-format-zero-length) ;;
2619             -Wdisabled-optimization) ;;
2620             -Wno-pointer-sign)       echo -Wno-other ;;
2621             *)                       echo $flag ;;
2622         esac
2623     done
2624 }
2625
2626 msvc_common_flags(){
2627     for flag; do
2628         case $flag in
2629             # In addition to specifying certain flags under the compiler
2630             # specific filters, they must be specified here as well or else the
2631             # generic catch all at the bottom will print the original flag.
2632             -Wall)                ;;
2633             -std=c99)             ;;
2634             # Common flags
2635             -fomit-frame-pointer) ;;
2636             -g)                   echo -Z7 ;;
2637             -fno-math-errno)      ;;
2638             -fno-common)          ;;
2639             -fno-signed-zeros)    ;;
2640             -fPIC)                ;;
2641             -mthumb)              ;;
2642             -march=*)             ;;
2643             -lz)                  echo zlib.lib ;;
2644             -lavifil32)           echo vfw32.lib ;;
2645             -lavicap32)           echo vfw32.lib user32.lib ;;
2646             -l*)                  echo ${flag#-l}.lib ;;
2647             *)                    echo $flag ;;
2648         esac
2649     done
2650 }
2651
2652 msvc_flags(){
2653     msvc_common_flags "$@"
2654     for flag; do
2655         case $flag in
2656             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2657                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2658                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2659                                        -wd4273 ;;
2660         esac
2661     done
2662 }
2663
2664 icl_flags(){
2665     msvc_common_flags "$@"
2666     for flag; do
2667         case $flag in
2668             # Despite what Intel's documentation says -Wall, which is supported
2669             # on Windows, does enable remarks so disable them here.
2670             -Wall)                echo $flag -Qdiag-disable:remark ;;
2671             -std=c99)             echo -Qstd=c99 ;;
2672         esac
2673     done
2674 }
2675
2676 pgi_flags(){
2677     for flag; do
2678         case $flag in
2679             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2680             -fomit-frame-pointer) echo -Mnoframe ;;
2681             -g)                   echo -gopt ;;
2682             *)                    echo $flag ;;
2683         esac
2684     done
2685 }
2686
2687 suncc_flags(){
2688     for flag; do
2689         case $flag in
2690             -march=*|-mcpu=*)
2691                 case "${flag#*=}" in
2692                     native)                   echo -xtarget=native       ;;
2693                     v9|niagara)               echo -xarch=sparc          ;;
2694                     ultrasparc)               echo -xarch=sparcvis       ;;
2695                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2696                     i586|pentium)             echo -xchip=pentium        ;;
2697                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2698                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2699                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2700                     pentium4*)          echo -xtarget=pentium4           ;;
2701                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2702                     *-sse3)             echo -xarch=sse3                 ;;
2703                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2704                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2705                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2706                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2707                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2708                     k8|opteron|athlon64|athlon-fx)
2709                                                echo -xarch=sse2a         ;;
2710                     athlon*)                   echo -xarch=pentium_proa  ;;
2711                 esac
2712                 ;;
2713             -std=c99)             echo -xc99              ;;
2714             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2715             -fPIC)                echo -KPIC -xcode=pic32 ;;
2716             -W*,*)                echo $flag              ;;
2717             -f*-*|-W*|-mimpure-text)                      ;;
2718             -shared)              echo -G                 ;;
2719             *)                    echo $flag              ;;
2720         esac
2721     done
2722 }
2723
2724 tms470_flags(){
2725     for flag; do
2726         case $flag in
2727             -march=*|-mcpu=*)
2728                 case "${flag#*=}" in
2729                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2730                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2731                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2732                     armv6*|arm11*)          echo -mv=6   ;;
2733                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2734                                             echo -mv=5e  ;;
2735                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2736                 esac
2737                 ;;
2738             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2739             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2740             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2741             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2742             -msoft-float)   echo --float_support=vfplib       ;;
2743             -O[0-3]|-mf=*)  echo $flag                        ;;
2744             -g)             echo -g -mn                       ;;
2745             -pds=*)         echo $flag                        ;;
2746             -D*|-I*)        echo $flag                        ;;
2747             --gcc|--abi=*)  echo $flag                        ;;
2748             -me)            echo $flag                        ;;
2749         esac
2750     done
2751 }
2752
2753 probe_cc(){
2754     pfx=$1
2755     _cc=$2
2756
2757     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2758     unset _ld_o _ldflags _ld_lib _ld_path
2759     unset _depflags _DEPCMD _DEPFLAGS
2760     _flags_filter=echo
2761
2762     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2763         _type=llvm_gcc
2764         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2765         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2766         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2767         _cflags_speed='-O3'
2768         _cflags_size='-Os'
2769     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2770         _type=gcc
2771         gcc_version=$($_cc --version | head -n1)
2772         gcc_basever=$($_cc -dumpversion)
2773         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2774         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2775         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2776         if ! $_cc -dumpversion | grep -q '^2\.'; then
2777             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2778         fi
2779         _cflags_speed='-O3'
2780         _cflags_size='-Os'
2781     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2782         _type=icc
2783         _ident=$($_cc --version | head -n1)
2784         _depflags='-MMD'
2785         _cflags_speed='-O3'
2786         _cflags_size='-Os'
2787         _cflags_noopt='-O1'
2788     elif $_cc -v 2>&1 | grep -q xlc; then
2789         _type=xlc
2790         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2791         _cflags_speed='-O5'
2792         _cflags_size='-O5 -qcompact'
2793     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2794         _type=ccc
2795         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2796         _DEPFLAGS='-M'
2797         _cflags_speed='-fast'
2798         _cflags_size='-O1'
2799         _flags_filter=ccc_flags
2800     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2801         test -d "$sysroot" || die "No valid sysroot specified."
2802         _type=armcc
2803         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2804         armcc_conf="$PWD/armcc.conf"
2805         $_cc --arm_linux_configure                 \
2806              --arm_linux_config_file="$armcc_conf" \
2807              --configure_sysroot="$sysroot"        \
2808              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2809              die "Error creating armcc configuration file."
2810         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2811         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2812         as_default="${cross_prefix}gcc"
2813         _depflags='-MMD'
2814         _cflags_speed='-O3'
2815         _cflags_size='-Os'
2816     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2817         _type=tms470
2818         _ident=$($_cc -version | head -n1 | tr -s ' ')
2819         _flags='--gcc --abi=eabi -me'
2820         _cc_e='-ppl -fe=$@'
2821         _cc_o='-fe=$@'
2822         _depflags='-ppa -ppd=$(@:.o=.d)'
2823         _cflags_speed='-O3 -mf=5'
2824         _cflags_size='-O3 -mf=2'
2825         _flags_filter=tms470_flags
2826     elif $_cc -v 2>&1 | grep -q clang; then
2827         _type=clang
2828         _ident=$($_cc --version | head -n1)
2829         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2830         _cflags_speed='-O3'
2831         _cflags_size='-Os'
2832     elif $_cc -V 2>&1 | grep -q Sun; then
2833         _type=suncc
2834         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2835         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2836         _DEPFLAGS='-xM1 -xc99'
2837         _ldflags='-std=c99'
2838         _cflags_speed='-O5'
2839         _cflags_size='-O5 -xspace'
2840         _flags_filter=suncc_flags
2841     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2842         _type=pathscale
2843         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2844         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2845         _cflags_speed='-O2'
2846         _cflags_size='-Os'
2847         _flags_filter='filter_out -Wdisabled-optimization'
2848     elif $_cc -v 2>&1 | grep -q Open64; then
2849         _type=open64
2850         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2851         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2852         _cflags_speed='-O2'
2853         _cflags_size='-Os'
2854         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2855     elif $_cc -V 2>&1 | grep -q Portland; then
2856         _type=pgi
2857         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2858         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2859         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2860         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2861         _cflags_noopt="-O1"
2862         _flags_filter=pgi_flags
2863     elif $_cc 2>&1 | grep -q Microsoft; then
2864         _type=msvc
2865         _ident=$($cc 2>&1 | head -n1)
2866         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2867         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2868         _cflags_speed="-O2"
2869         _cflags_size="-O1"
2870         if $_cc 2>&1 | grep -q Linker; then
2871             _ld_o='-out:$@'
2872         else
2873             _ld_o='-Fe$@'
2874         fi
2875         _cc_o='-Fo$@'
2876         _cc_e='-P -Fi$@'
2877         _flags_filter=msvc_flags
2878         _ld_lib='lib%.a'
2879         _ld_path='-libpath:'
2880         _flags='-nologo'
2881         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2882         if [ $pfx = hostcc ]; then
2883             append _cflags -Dsnprintf=_snprintf
2884         fi
2885     elif $_cc 2>&1 | grep -q Intel; then
2886         _type=icl
2887         _ident=$($cc 2>&1 | head -n1)
2888         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2889         # Not only is O3 broken on 13.x+ but it is slower on all previous
2890         # versions (tested) as well.
2891         _cflags_speed="-O2"
2892         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2893         if $_cc 2>&1 | grep -q Linker; then
2894             _ld_o='-out:$@'
2895         else
2896             _ld_o='-Fe$@'
2897         fi
2898         _cc_o='-Fo$@'
2899         _cc_e='-P'
2900         _flags_filter=icl_flags
2901         _ld_lib='lib%.a'
2902         _ld_path='-libpath:'
2903         # -Qdiag-error to make icl error when seeing certain unknown arguments
2904         _flags='-nologo -Qdiag-error:4044,10157'
2905         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2906         # with MSVC which enables it by default.
2907         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2908         if [ $pfx = hostcc ]; then
2909             append _cflags -Dsnprintf=_snprintf
2910         fi
2911     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2912         _type=cparser
2913         _ident=$($_cc --version | head -n1)
2914         _depflags='-MMD'
2915         _cflags_speed='-O4'
2916         _cflags_size='-O2'
2917         _flags_filter=cparser_flags
2918     fi
2919
2920     eval ${pfx}_type=\$_type
2921     eval ${pfx}_ident=\$_ident
2922 }
2923
2924 set_ccvars(){
2925     eval ${1}_C=\${_cc_c-\${${1}_C}}
2926     eval ${1}_E=\${_cc_e-\${${1}_E}}
2927     eval ${1}_O=\${_cc_o-\${${1}_O}}
2928
2929     if [ -n "$_depflags" ]; then
2930         eval ${1}_DEPFLAGS=\$_depflags
2931     else
2932         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2933         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2934         eval DEP${1}FLAGS=\$_flags
2935     fi
2936 }
2937
2938 probe_cc cc "$cc"
2939 cflags_filter=$_flags_filter
2940 cflags_speed=$_cflags_speed
2941 cflags_size=$_cflags_size
2942 cflags_noopt=$_cflags_noopt
2943 add_cflags $_flags $_cflags
2944 cc_ldflags=$_ldflags
2945 set_ccvars CC
2946
2947 probe_cc hostcc "$host_cc"
2948 host_cflags_filter=$_flags_filter
2949 add_host_cflags  $_flags $_cflags
2950 set_ccvars HOSTCC
2951
2952 test -n "$cc_type" && enable $cc_type ||
2953     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2954
2955 : ${as_default:=$cc}
2956 : ${dep_cc_default:=$cc}
2957 : ${ld_default:=$cc}
2958 : ${host_ld_default:=$host_cc}
2959 set_default ar as dep_cc ld host_ld
2960
2961 probe_cc as "$as"
2962 asflags_filter=$_flags_filter
2963 add_asflags $_flags $_cflags
2964 set_ccvars AS
2965
2966 probe_cc ld "$ld"
2967 ldflags_filter=$_flags_filter
2968 add_ldflags $_flags $_ldflags
2969 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2970 LD_O=${_ld_o-$LD_O}
2971 LD_LIB=${_ld_lib-$LD_LIB}
2972 LD_PATH=${_ld_path-$LD_PATH}
2973
2974 probe_cc hostld "$host_ld"
2975 host_ldflags_filter=$_flags_filter
2976 add_host_ldflags $_flags $_ldflags
2977 HOSTLD_O=${_ld_o-$HOSTLD_O}
2978
2979 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2980     probe_cc depcc "$dep_cc"
2981     CCDEP=${_DEPCMD:-$DEPCMD}
2982     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2983     DEPCCFLAGS=$_flags
2984 fi
2985
2986 if $ar 2>&1 | grep -q Microsoft; then
2987     arflags="-nologo"
2988     ar_o='-out:$@'
2989 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2990     arflags="rq"
2991     ar_o='$@'
2992 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2993     arflags='-Xany -r -c'
2994     ar_o='$@'
2995 else
2996     arflags="rc"
2997     ar_o='$@'
2998 fi
2999
3000 add_cflags $extra_cflags
3001 add_asflags $extra_cflags
3002
3003 if test -n "$sysroot"; then
3004     case "$cc_type" in
3005         gcc|llvm_gcc|clang)
3006             add_cppflags --sysroot="$sysroot"
3007             add_ldflags --sysroot="$sysroot"
3008         ;;
3009         tms470)
3010             add_cppflags -I"$sysinclude"
3011             add_ldflags  --sysroot="$sysroot"
3012         ;;
3013     esac
3014 fi
3015
3016 if test "$cpu" = host; then
3017     enabled cross_compile &&
3018         die "--cpu=host makes no sense when cross-compiling."
3019
3020     case "$cc_type" in
3021         gcc|llvm_gcc)
3022             check_native(){
3023                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3024                 sed -n "/cc1.*$1=/{
3025                             s/.*$1=\\([^ ]*\\).*/\\1/
3026                             p
3027                             q
3028                         }" $TMPE
3029             }
3030             cpu=$(check_native -march || check_native -mcpu)
3031         ;;
3032     esac
3033
3034     test "${cpu:-host}" = host &&
3035         die "--cpu=host not supported with compiler $cc"
3036 fi
3037
3038 # Deal with common $arch aliases
3039 case "$arch" in
3040     aarch64|arm64)
3041         arch="aarch64"
3042     ;;
3043     arm*)
3044         arch="arm"
3045     ;;
3046     mips*|IP*)
3047         arch="mips"
3048     ;;
3049     parisc*|hppa*)
3050         arch="parisc"
3051     ;;
3052     "Power Macintosh"|ppc*|powerpc*)
3053         arch="ppc"
3054     ;;
3055     s390|s390x)
3056         arch="s390"
3057     ;;
3058     sh4|sh)
3059         arch="sh4"
3060     ;;
3061     sun4u|sparc*)
3062         arch="sparc"
3063     ;;
3064     tilegx|tile-gx)
3065         arch="tilegx"
3066     ;;
3067     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3068         arch="x86"
3069     ;;
3070 esac
3071
3072 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3073 enable $arch
3074
3075 # Add processor-specific flags
3076 if enabled aarch64; then
3077
3078     case $cpu in
3079         armv*)
3080             cpuflags="-march=$cpu"
3081         ;;
3082         *)
3083             cpuflags="-mcpu=$cpu"
3084         ;;
3085     esac
3086
3087 elif enabled alpha; then
3088
3089     cpuflags="-mcpu=$cpu"
3090
3091 elif enabled arm; then
3092
3093     check_arm_arch() {
3094         check_cpp_condition stddef.h \
3095             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3096             $cpuflags
3097     }
3098
3099     probe_arm_arch() {
3100         if   check_arm_arch 4;        then echo armv4;
3101         elif check_arm_arch 4T;       then echo armv4t;
3102         elif check_arm_arch 5;        then echo armv5;
3103         elif check_arm_arch 5E;       then echo armv5e;
3104         elif check_arm_arch 5T;       then echo armv5t;
3105         elif check_arm_arch 5TE;      then echo armv5te;
3106         elif check_arm_arch 5TEJ;     then echo armv5te;
3107         elif check_arm_arch 6;        then echo armv6;
3108         elif check_arm_arch 6J;       then echo armv6j;
3109         elif check_arm_arch 6K;       then echo armv6k;
3110         elif check_arm_arch 6Z;       then echo armv6z;
3111         elif check_arm_arch 6ZK;      then echo armv6zk;
3112         elif check_arm_arch 6T2;      then echo armv6t2;
3113         elif check_arm_arch 7;        then echo armv7;
3114         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3115         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3116         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3117         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3118         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3119         fi
3120     }
3121
3122     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3123
3124     case $cpu in
3125         armv*)
3126             cpuflags="-march=$cpu"
3127             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3128         ;;
3129         *)
3130             cpuflags="-mcpu=$cpu"
3131             case $cpu in
3132                 cortex-a*)                               subarch=armv7a  ;;
3133                 cortex-r*)                               subarch=armv7r  ;;
3134                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3135                 arm11*)                                  subarch=armv6   ;;
3136                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3137                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3138                 *)                             subarch=$(probe_arm_arch) ;;
3139             esac
3140         ;;
3141     esac
3142
3143     case "$subarch" in
3144         armv5t*)    enable fast_clz                ;;
3145         armv[6-8]*) enable fast_clz fast_unaligned ;;
3146     esac
3147
3148 elif enabled avr32; then
3149
3150     case $cpu in
3151         ap7[02]0[0-2])
3152             subarch="avr32_ap"
3153             cpuflags="-mpart=$cpu"
3154         ;;
3155         ap)
3156             subarch="avr32_ap"
3157             cpuflags="-march=$cpu"
3158         ;;
3159         uc3[ab]*)
3160             subarch="avr32_uc"
3161             cpuflags="-mcpu=$cpu"
3162         ;;
3163         uc)
3164             subarch="avr32_uc"
3165             cpuflags="-march=$cpu"
3166         ;;
3167     esac
3168
3169 elif enabled bfin; then
3170
3171     cpuflags="-mcpu=$cpu"
3172
3173 elif enabled mips; then
3174
3175     cpuflags="-march=$cpu"
3176
3177 elif enabled ppc; then
3178
3179     disable ldbrx
3180
3181     case $(tolower $cpu) in
3182         601|ppc601|powerpc601)
3183             cpuflags="-mcpu=601"
3184             disable altivec
3185         ;;
3186         603*|ppc603*|powerpc603*)
3187             cpuflags="-mcpu=603"
3188             disable altivec
3189         ;;
3190         604*|ppc604*|powerpc604*)
3191             cpuflags="-mcpu=604"
3192             disable altivec
3193         ;;
3194         g3|75*|ppc75*|powerpc75*)
3195             cpuflags="-mcpu=750"
3196             disable altivec
3197         ;;
3198         g4|745*|ppc745*|powerpc745*)
3199             cpuflags="-mcpu=7450"
3200         ;;
3201         74*|ppc74*|powerpc74*)
3202             cpuflags="-mcpu=7400"
3203         ;;
3204         g5|970|ppc970|powerpc970)
3205             cpuflags="-mcpu=970"
3206         ;;
3207         power[3-7]*)
3208             cpuflags="-mcpu=$cpu"
3209         ;;
3210         cell)
3211             cpuflags="-mcpu=cell"
3212             enable ldbrx
3213         ;;
3214         e500mc)
3215             cpuflags="-mcpu=e500mc"
3216             disable altivec
3217         ;;
3218         e500v2)
3219             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3220             disable altivec
3221             disable dcbzl
3222         ;;
3223         e500)
3224             cpuflags="-mcpu=8540 -mhard-float"
3225             disable altivec
3226             disable dcbzl
3227         ;;
3228     esac
3229
3230 elif enabled sparc; then
3231
3232     case $cpu in
3233         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3234             cpuflags="-mcpu=$cpu"
3235         ;;
3236         ultrasparc*|niagara[234])
3237             cpuflags="-mcpu=$cpu"
3238         ;;
3239     esac
3240
3241 elif enabled x86; then
3242
3243     case $cpu in
3244         i[345]86|pentium)
3245             cpuflags="-march=$cpu"
3246             disable mmx
3247         ;;
3248         # targets that do NOT support nopl and conditional mov (cmov)
3249         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3250             cpuflags="-march=$cpu"
3251             disable i686
3252         ;;
3253         # targets that do support nopl and conditional mov (cmov)
3254         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3255             cpuflags="-march=$cpu"
3256             enable i686
3257             enable fast_cmov
3258         ;;
3259         # targets that do support conditional mov but on which it's slow
3260         pentium4|pentium4m|prescott|nocona)
3261             cpuflags="-march=$cpu"
3262             enable i686
3263             disable fast_cmov
3264         ;;
3265     esac
3266
3267 fi
3268
3269 if [ "$cpu" != generic ]; then
3270     add_cflags  $cpuflags
3271     add_asflags $cpuflags
3272 fi
3273
3274 # compiler sanity check
3275 check_exec <<EOF
3276 int main(void){ return 0; }
3277 EOF
3278 if test "$?" != 0; then
3279     echo "$cc is unable to create an executable file."
3280     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3281         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3282         echo "Only do this if you know what cross compiling means."
3283     fi
3284     die "C compiler test failed."
3285 fi
3286
3287 add_cppflags -D_ISOC99_SOURCE
3288 check_cflags -std=c99
3289 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3290 #include <stdlib.h>
3291 EOF
3292 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3293 #include <stdlib.h>
3294 EOF
3295
3296 add_host_cppflags -D_ISOC99_SOURCE
3297 check_host_cflags -std=c99
3298 check_host_cflags -Wall
3299 check_host_cflags -O3
3300
3301 check_64bit(){
3302     arch32=$1
3303     arch64=$2
3304     expr=$3
3305     check_code cc "" "int test[2*($expr) - 1]" &&
3306         subarch=$arch64 || subarch=$arch32
3307 }
3308
3309 case "$arch" in
3310     aarch64|alpha|ia64)
3311         spic=$shared
3312     ;;
3313     mips)
3314         check_64bit mips mips64 '_MIPS_SIM > 1'
3315         spic=$shared
3316     ;;
3317     parisc)
3318         check_64bit parisc parisc64 'sizeof(void *) > 4'
3319         spic=$shared
3320     ;;
3321     ppc)
3322         check_64bit ppc ppc64 'sizeof(void *) > 4'
3323         spic=$shared
3324     ;;
3325     s390)
3326         check_64bit s390 s390x 'sizeof(void *) > 4'
3327         spic=$shared
3328     ;;
3329     sparc)
3330         check_64bit sparc sparc64 'sizeof(void *) > 4'
3331         spic=$shared
3332     ;;
3333     x86)
3334         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3335         if test "$subarch" = "x86_64"; then
3336             spic=$shared
3337         fi
3338     ;;
3339 esac
3340
3341 enable $subarch
3342 enabled spic && enable_weak pic
3343
3344 # OS specific
3345 case $target_os in
3346     aix)
3347         SHFLAGS=-shared
3348         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3349         enabled shared && add_ldflags -Wl,-brtl
3350         ;;
3351     android)
3352         disable symver
3353         SLIB_INSTALL_NAME='$(SLIBNAME)'
3354         SLIB_INSTALL_LINKS=
3355         # soname not set on purpose
3356         SHFLAGS=-shared
3357         ;;
3358     haiku)
3359         prefix_default="/boot/common"
3360         network_extralibs="-lnetwork"
3361         host_libs=
3362         ;;
3363     sunos)
3364         SHFLAGS='-shared -Wl,-h,$$(@F)'
3365         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3366         network_extralibs="-lsocket -lnsl"
3367         # When using suncc to build, the Solaris linker will mark
3368         # an executable with each instruction set encountered by
3369         # the Solaris assembler.  As our libraries contain their own
3370         # guards for processor-specific code, instead suppress
3371         # generation of the HWCAPS ELF section on Solaris x86 only.
3372         enabled_all suncc x86 &&
3373             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3374             add_ldflags -Wl,-M,mapfile
3375         nm_default='nm -P -g'
3376         ;;
3377     netbsd)
3378         disable symver
3379         oss_indev_extralibs="-lossaudio"
3380         oss_outdev_extralibs="-lossaudio"
3381         ;;
3382     openbsd|bitrig)
3383         disable symver
3384         SHFLAGS='-shared'
3385         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3386         SLIB_INSTALL_LINKS=
3387         oss_indev_extralibs="-lossaudio"
3388         oss_outdev_extralibs="-lossaudio"
3389         ;;
3390     dragonfly)
3391         disable symver
3392         ;;
3393     freebsd)
3394         ;;
3395     bsd/os)
3396         add_extralibs -lpoll -lgnugetopt
3397         ;;
3398     darwin)
3399         gas="gas-preprocessor.pl $cc"
3400         enabled ppc && add_asflags -force_cpusubtype_ALL
3401         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3402         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3403         add_ldflags -Wl,-dynamic,-search_paths_first
3404         SLIBSUF=".dylib"
3405         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3406         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3407         objformat="macho"
3408         enabled x86_64 && objformat="macho64"
3409         enabled_any pic shared ||
3410             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3411         ;;
3412     mingw32*)
3413         if test $target_os = "mingw32ce"; then
3414             disable network
3415         else
3416             target_os=mingw32
3417         fi
3418         LIBTARGET=i386
3419         if enabled x86_64; then
3420             LIBTARGET="i386:x86-64"
3421         elif enabled arm; then
3422             LIBTARGET=arm-wince
3423         fi
3424         check_ldflags -Wl,--nxcompat
3425         check_ldflags -Wl,--dynamicbase
3426         shlibdir_default="$bindir_default"
3427         SLIBPREF=""
3428         SLIBSUF=".dll"
3429         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3430         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3431         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3432         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3433         SLIB_INSTALL_LINKS=
3434         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3435         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3436         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3437         objformat="win32"
3438         dlltool="${cross_prefix}dlltool"
3439         ranlib=:
3440         enable dos_paths
3441         ;;
3442     win32|win64)
3443         disable symver
3444         if enabled shared; then
3445             # Link to the import library instead of the normal static library
3446             # for shared libs.
3447             LD_LIB='%.lib'
3448             # Cannot build both shared and static libs with MSVC or icl.
3449             disable static
3450         fi
3451         shlibdir_default="$bindir_default"
3452         SLIBPREF=""
3453         SLIBSUF=".dll"
3454         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3455         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3456         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3457         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3458         SLIB_INSTALL_LINKS=
3459         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3460         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3461         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3462         objformat="win32"
3463         ranlib=:
3464         enable dos_paths
3465         ;;
3466     cygwin*)
3467         target_os=cygwin
3468         shlibdir_default="$bindir_default"
3469         SLIBPREF="cyg"
3470         SLIBSUF=".dll"
3471         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3472         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3473         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3474         SLIB_INSTALL_LINKS=
3475         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3476         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3477         objformat="win32"
3478         enable dos_paths
3479         ;;
3480     *-dos|freedos|opendos)
3481         network_extralibs="-lsocket"
3482         objformat="coff"
3483         enable dos_paths
3484         add_cppflags -U__STRICT_ANSI__
3485         ;;
3486     linux)
3487         enable dv1394
3488         ;;
3489     irix*)
3490         target_os=irix
3491         ranlib="echo ignoring ranlib"
3492         ;;
3493     os/2*)
3494         ln_s="cp -f"
3495         objformat="aout"
3496         add_cppflags -D_GNU_SOURCE
3497         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3498         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3499         LIBSUF="_s.a"
3500         SLIBPREF=""
3501         SLIBSUF=".dll"
3502         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3503         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3504         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3505             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3506             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3507             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3508             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3509             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3510         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3511             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3512         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3513         enable dos_paths
3514         ;;
3515     gnu/kfreebsd)
3516         add_cppflags -D_BSD_SOURCE
3517         ;;
3518     gnu)
3519         ;;
3520     qnx)
3521         add_cppflags -D_QNX_SOURCE
3522         network_extralibs="-lsocket"
3523         ;;
3524     symbian)
3525         SLIBSUF=".dll"
3526         enable dos_paths
3527         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3528         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3529         add_ldflags -Wl,--target1-abs,--no-undefined \
3530                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3531                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3532         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3533                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3534                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3535         ;;
3536     osf1)
3537         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3538         ;;
3539     minix)
3540         ;;
3541     plan9)
3542         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3543                      -D_REENTRANT_SOURCE        \
3544                      -D_RESEARCH_SOURCE         \
3545                      -DFD_SETSIZE=96            \
3546                      -DHAVE_SOCK_OPTS
3547         add_compat strtod.o strtod=avpriv_strtod
3548         network_extralibs='-lbsd'
3549         exeobjs=compat/plan9/main.o
3550         cp_f='cp'
3551         ;;
3552     none)
3553         ;;
3554     *)
3555         die "Unknown OS '$target_os'."
3556         ;;
3557 esac
3558
3559 # determine libc flavour
3560
3561 probe_libc(){
3562     pfx=$1
3563     pfx_no_=${pfx%_}
3564     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3565     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3566         eval ${pfx}libc_type=uclibc
3567         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3568     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3569         eval ${pfx}libc_type=glibc
3570         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3571     # MinGW headers can be installed on Cygwin, so check for newlib first.
3572     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3573         eval ${pfx}libc_type=newlib
3574         add_${pfx}cppflags -U__STRICT_ANSI__
3575     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3576     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3577         eval ${pfx}libc_type=mingw64
3578         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3579         eval test \$${pfx_no_}cc_type = "gcc" &&
3580             add_${pfx}cppflags -D__printf__=__gnu_printf__
3581     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3582          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3583         eval ${pfx}libc_type=mingw32
3584         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3585             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3586             die "ERROR: MinGW32 runtime version must be >= 3.15."
3587         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3588         eval test \$${pfx_no_}cc_type = "gcc" &&
3589             add_${pfx}cppflags -D__printf__=__gnu_printf__
3590     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3591         eval ${pfx}libc_type=msvcrt
3592         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3593         # 0x601 by default unless something else is set by the user.
3594         # This can easily lead to us detecting functions only present
3595         # in such new versions and producing binaries requiring windows 7.0.
3596         # Therefore explicitly set the default to XP unless the user has
3597         # set something else on the command line.
3598         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3599             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3600     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3601         eval ${pfx}libc_type=klibc
3602     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3603         eval ${pfx}libc_type=bionic
3604     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3605         eval ${pfx}libc_type=solaris
3606         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3607     fi
3608 }
3609
3610 probe_libc
3611 test -n "$libc_type" && enable libc_$libc_type
3612 probe_libc host_
3613 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3614
3615 case $libc_type in
3616     bionic)
3617         add_compat strtod.o strtod=avpriv_strtod
3618         ;;
3619     msvcrt)
3620         add_compat strtod.o strtod=avpriv_strtod
3621         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3622                                      _snprintf=avpriv_snprintf  \
3623                                      vsnprintf=avpriv_vsnprintf
3624         ;;
3625 esac
3626
3627 # hacks for compiler/libc/os combinations
3628
3629 if enabled_all tms470 libc_glibc; then
3630     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3631     add_cppflags -D__USER_LABEL_PREFIX__=
3632     add_cppflags -D__builtin_memset=memset
3633     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3634     add_cflags   -pds=48    # incompatible redefinition of macro
3635 fi
3636
3637 if enabled_all ccc libc_glibc; then
3638     add_ldflags -Wl,-z,now  # calls to libots crash without this
3639 fi
3640
3641 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3642     add_cppflags '-I\$(SRC_PATH)/compat/float'
3643
3644 esc(){
3645     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3646 }
3647
3648 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3649
3650 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3651
3652 set_default $PATHS_LIST
3653 set_default nm
3654
3655 # we need to build at least one lib type
3656 if ! enabled_any static shared; then
3657     cat <<EOF
3658 At least one library type must be built.
3659 Specify --enable-static to build the static libraries or --enable-shared to
3660 build the shared libraries as well. To only build the shared libraries specify
3661 --disable-static in addition to --enable-shared.
3662 EOF
3663     exit 1;
3664 fi
3665
3666 die_license_disabled() {
3667     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3668 }
3669
3670 die_license_disabled gpl libcdio
3671 die_license_disabled gpl libx264
3672 die_license_disabled gpl libx265
3673 die_license_disabled gpl libxavs
3674 die_license_disabled gpl libxvid
3675 die_license_disabled gpl x11grab
3676
3677 die_license_disabled nonfree libfaac
3678 die_license_disabled nonfree libfdk_aac
3679 die_license_disabled nonfree openssl
3680
3681 die_license_disabled version3 libopencore_amrnb
3682 die_license_disabled version3 libopencore_amrwb
3683 die_license_disabled version3 libvo_aacenc
3684 die_license_disabled version3 libvo_amrwbenc
3685
3686 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3687
3688 disabled optimizations || check_cflags -fomit-frame-pointer
3689
3690 enable_weak_pic() {
3691     disabled pic && return
3692     enable pic
3693     add_cppflags -DPIC
3694     case "$target_os" in
3695     mingw*|cygwin*)
3696         ;;
3697     *)
3698         add_cflags -fPIC
3699         ;;
3700     esac
3701     add_asflags  -fPIC
3702 }
3703
3704 enabled pic && enable_weak_pic
3705
3706 check_cc <<EOF || die "Symbol mangling check failed."
3707 int ff_extern;
3708 EOF
3709 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3710 extern_prefix=${sym%%ff_extern*}
3711
3712 check_cc <<EOF && enable_weak inline_asm
3713 void foo(void) { __asm__ volatile ("" ::); }
3714 EOF
3715
3716 _restrict=
3717 for restrict_keyword in restrict __restrict__ __restrict; do
3718     check_cc <<EOF && _restrict=$restrict_keyword && break
3719 void foo(char * $restrict_keyword p);
3720 EOF
3721 done
3722
3723 check_cc <<EOF && enable pragma_deprecated
3724 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3725 EOF
3726
3727 check_cc <<EOF && enable attribute_packed
3728 struct { int x; } __attribute__((packed)) x;
3729 EOF
3730
3731 check_cc <<EOF && enable attribute_may_alias
3732 union { int x; } __attribute__((may_alias)) x;
3733 EOF
3734
3735 check_cc <<EOF || die "endian test failed"
3736 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3737 EOF
3738 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3739
3740
3741 if enabled asm; then
3742     enabled     arm         && nogas=die
3743     enabled_all ppc altivec && nogas=warn
3744     as=${gas:=$as}
3745     check_as <<EOF && enable gnu_as || \
3746         $nogas "GNU assembler not found, install gas-preprocessor"
3747 .macro m n
3748 \n: .int 0
3749 .endm
3750 m x
3751 EOF
3752
3753     check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
3754 .altmacro
3755 EOF
3756
3757     check_as <<EOF && enable as_func
3758 .func test
3759 .endfunc
3760 EOF
3761 fi
3762
3763 check_inline_asm inline_asm_labels '"1:\n"'
3764
3765 if enabled aarch64; then
3766     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3767     # internal assembler in clang 3.3 does not support this instruction
3768     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3769     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3770
3771     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3772
3773 elif enabled alpha; then
3774
3775     check_cflags -mieee
3776
3777 elif enabled arm; then
3778
3779     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3780     enabled thumb && check_cflags -mthumb || check_cflags -marm
3781
3782     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3783         enable vfp_args
3784     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3785         case "${cross_prefix:-$cc}" in
3786             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3787             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3788 __asm__ (".eabi_attribute 28, 1");
3789 int main(void) { return 0; }
3790 EOF
3791         esac
3792         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3793     fi
3794
3795     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3796     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3797     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3798     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3799     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3800     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3801
3802     [ $target_os = linux ] ||
3803         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3804             $ARCH_EXT_LIST_ARM
3805
3806     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3807
3808     check_as <<EOF && enable as_dn_directive
3809 ra .dn d0.i16
3810 .unreq ra
3811 EOF
3812
3813     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3814
3815 elif enabled mips; then
3816
3817     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3818
3819 elif enabled parisc; then
3820
3821     if enabled gcc; then
3822         case $($cc -dumpversion) in
3823             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3824         esac
3825     fi
3826
3827 elif enabled ppc; then
3828
3829     enable local_aligned_8 local_aligned_16
3830
3831     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3832     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3833     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3834     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3835
3836     # AltiVec flags: The FSF version of GCC differs from the Apple version
3837     if enabled altivec; then
3838         check_cflags -maltivec -mabi=altivec &&
3839         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3840         check_cflags -faltivec
3841
3842         # check if our compiler supports Motorola AltiVec C API
3843         check_cc <<EOF || disable altivec
3844 $inc_altivec_h
3845 int main(void) {
3846     vector signed int v1 = (vector signed int) { 0 };
3847     vector signed int v2 = (vector signed int) { 1 };
3848     v1 = vec_add(v1, v2);
3849     return 0;
3850 }
3851 EOF
3852
3853         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3854     fi
3855
3856 elif enabled x86; then
3857
3858     check_builtin rdtsc    intrin.h   "__rdtsc()"
3859     check_builtin mm_empty mmintrin.h "_mm_empty()"
3860
3861     enable local_aligned_8 local_aligned_16
3862
3863     # check whether EBP is available on x86
3864     # As 'i' is stored on the stack, this program will crash
3865     # if the base pointer is used to access it because the
3866     # base pointer is cleared in the inline assembly code.
3867     check_exec_crash <<EOF && enable ebp_available
3868 volatile int i=0;
3869 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3870 return i;
3871 EOF
3872
3873     # check whether EBX is available on x86
3874     check_inline_asm ebx_available '""::"b"(0)' &&
3875         check_inline_asm ebx_available '"":::"%ebx"'
3876
3877     # check whether xmm clobbers are supported
3878     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3879
3880     # check whether binutils is new enough to compile SSSE3/MMXEXT
3881     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3882     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3883
3884     if ! disabled_any asm mmx yasm; then
3885         if check_cmd $yasmexe --version; then
3886             enabled x86_64 && yasm_extra="-m amd64"
3887             yasm_debug="-g dwarf2"
3888         elif check_cmd nasm -v; then
3889             yasmexe=nasm
3890             yasm_debug="-g -F dwarf"
3891             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3892         fi
3893
3894         YASMFLAGS="-f $objformat $yasm_extra"
3895         enabled pic               && append YASMFLAGS "-DPIC"
3896         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3897         case "$objformat" in
3898             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3899         esac
3900
3901         check_yasm "movbe ecx, [5]" && enable yasm ||
3902             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3903         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3904         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3905         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3906         check_yasm "CPU amdnop" || disable cpunop
3907     fi
3908
3909     case "$cpu" in
3910         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3911             disable fast_clz
3912         ;;
3913     esac
3914
3915 fi
3916
3917 check_ldflags -Wl,--as-needed
3918
3919 if check_func dlopen; then
3920     ldl=
3921 elif check_func dlopen -ldl; then
3922     ldl=-ldl
3923 fi
3924
3925 if ! disabled network; then
3926     check_func getaddrinfo $network_extralibs
3927     check_func getservbyport $network_extralibs
3928     check_func inet_aton $network_extralibs
3929
3930     check_type netdb.h "struct addrinfo"
3931     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3932     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3933     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3934     check_type poll.h "struct pollfd"
3935     check_type netinet/sctp.h "struct sctp_event_subscribe"
3936     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3937     check_type netinet/in.h "struct sockaddr_in6"
3938     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3939     check_type "sys/types.h sys/socket.h" socklen_t
3940
3941     # Prefer arpa/inet.h over winsock2
3942     if check_header arpa/inet.h ; then
3943         check_func closesocket
3944     elif check_header winsock2.h ; then
3945         check_func_headers winsock2.h closesocket -lws2 &&
3946             network_extralibs="-lws2" ||
3947         { check_func_headers winsock2.h closesocket -lws2_32 &&
3948             network_extralibs="-lws2_32"; } || disable winsock2_h network
3949         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3950
3951         check_type ws2tcpip.h socklen_t
3952         check_type ws2tcpip.h "struct addrinfo"
3953         check_type ws2tcpip.h "struct group_source_req"
3954         check_type ws2tcpip.h "struct ip_mreq_source"
3955         check_type ws2tcpip.h "struct ipv6_mreq"
3956         check_type winsock2.h "struct pollfd"
3957         check_struct winsock2.h "struct sockaddr" sa_len
3958         check_type ws2tcpip.h "struct sockaddr_in6"
3959         check_type ws2tcpip.h "struct sockaddr_storage"
3960     else
3961         disable network
3962     fi
3963 fi
3964
3965 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3966 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3967 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3968 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3969
3970 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3971 check_func  ${malloc_prefix}memalign            && enable memalign
3972 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3973
3974 check_func  fcntl
3975 check_func  fork
3976 check_func  gethrtime
3977 check_func  getopt
3978 check_func  getrusage
3979 check_func  gettimeofday
3980 check_func  isatty
3981 check_func  localtime_r
3982 check_func  mach_absolute_time
3983 check_func  mkstemp
3984 check_func  mmap
3985 check_func  mprotect
3986 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3987 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3988 check_func  sched_getaffinity
3989 check_func  setrlimit
3990 check_func  strerror_r
3991 check_func  strptime
3992 check_func  sysconf
3993 check_func  sysctl
3994 check_func  usleep
3995
3996 check_func_headers io.h setmode
3997 check_func_headers stdlib.h getenv
3998
3999 check_func_headers windows.h CoTaskMemFree -lole32
4000 check_func_headers windows.h GetProcessAffinityMask
4001 check_func_headers windows.h GetProcessTimes
4002 check_func_headers windows.h GetSystemTimeAsFileTime
4003 check_func_headers windows.h MapViewOfFile
4004 check_func_headers windows.h SetConsoleTextAttribute
4005 check_func_headers windows.h Sleep
4006 check_func_headers windows.h VirtualAlloc
4007
4008 check_header direct.h
4009 check_header dlfcn.h
4010 check_header dxva.h
4011 check_header dxva2api.h
4012 check_header io.h
4013 check_header mach/mach_time.h
4014 check_header malloc.h
4015 check_header poll.h
4016 check_header sys/mman.h
4017 check_header sys/param.h
4018 check_header sys/resource.h
4019 check_header sys/select.h
4020 check_header sys/time.h
4021 check_header sys/un.h
4022 check_header unistd.h
4023 check_header vdpau/vdpau.h
4024 check_header vdpau/vdpau_x11.h
4025 check_header VideoDecodeAcceleration/VDADecoder.h
4026 check_header windows.h
4027 check_header X11/extensions/XvMClib.h
4028
4029 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4030 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4031 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4032
4033 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4034
4035 if ! disabled w32threads && ! enabled pthreads; then
4036     check_func_headers "windows.h process.h" _beginthreadex &&
4037         enable w32threads || disable w32threads
4038 fi
4039
4040 # check for some common methods of building with pthread support
4041 # do this before the optional library checks as some of them require pthreads
4042 if ! disabled pthreads && ! enabled w32threads; then
4043     enable pthreads
4044     if check_func pthread_join -pthread; then
4045         add_cflags -pthread
4046         add_extralibs -pthread
4047     elif check_func pthread_join -pthreads; then
4048         add_cflags -pthreads
4049         add_extralibs -pthreads
4050     elif check_func pthread_join -lpthreadGC2; then
4051         add_extralibs -lpthreadGC2
4052     elif check_lib pthread.h pthread_join -lpthread; then
4053         :
4054     elif ! check_func pthread_join; then
4055         disable pthreads
4056     fi