dsputil: Split audio operations off into a separate 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 assembler 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 assembler
289   --disable-yasm           disable use of yasm assembler
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     cabac
1535     dsputil
1536     gcrypt
1537     golomb
1538     gplv3
1539     h263dsp
1540     h264chroma
1541     h264dsp
1542     h264pred
1543     h264qpel
1544     hpeldsp
1545     huffman
1546     huffyuvdsp
1547     huffyuvencdsp
1548     intrax8
1549     lgplv3
1550     lpc
1551     mpegaudio
1552     mpegaudiodsp
1553     mpegvideo
1554     mpegvideoenc
1555     nettle
1556     qpeldsp
1557     rangecoder
1558     riffdec
1559     riffenc
1560     rtpdec
1561     rtpenc_chain
1562     sinewin
1563     tpeldsp
1564     videodsp
1565     vp3dsp
1566 "
1567
1568 CMDLINE_SELECT="
1569     $ARCH_EXT_LIST
1570     $CONFIG_LIST
1571     $HAVE_LIST_CMDLINE
1572     $THREADS_LIST
1573     asm
1574     cross_compile
1575     debug
1576     extra_warnings
1577     logging
1578     lto
1579     optimizations
1580 "
1581
1582 PATHS_LIST="
1583     bindir
1584     datadir
1585     docdir
1586     incdir
1587     libdir
1588     mandir
1589     prefix
1590     shlibdir
1591 "
1592
1593 CMDLINE_SET="
1594     $PATHS_LIST
1595     ar
1596     arch
1597     as
1598     build_suffix
1599     cc
1600     cpu
1601     cross_prefix
1602     dep_cc
1603     extra_version
1604     host_cc
1605     host_cflags
1606     host_ld
1607     host_ldflags
1608     host_libs
1609     host_os
1610     ld
1611     logfile
1612     malloc_prefix
1613     nm
1614     optflags
1615     pkg_config
1616     pkg_config_flags
1617     random_seed
1618     samples
1619     sysinclude
1620     sysroot
1621     target_exec
1622     target_os
1623     target_path
1624     target_samples
1625     toolchain
1626 "
1627
1628 CMDLINE_APPEND="
1629     extra_cflags
1630     host_cppflags
1631 "
1632
1633 # code dependency declarations
1634
1635 # architecture extensions
1636
1637 armv5te_deps="arm"
1638 armv6_deps="arm"
1639 armv6t2_deps="arm"
1640 armv8_deps="aarch64"
1641 neon_deps_any="aarch64 arm"
1642 vfp_deps_any="aarch64 arm"
1643 vfpv3_deps="vfp"
1644
1645 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1646
1647 altivec_deps="ppc"
1648 ppc4xx_deps="ppc"
1649
1650 cpunop_deps="i686"
1651 x86_64_select="i686"
1652 x86_64_suggest="fast_cmov"
1653
1654 amd3dnow_deps="mmx"
1655 amd3dnowext_deps="amd3dnow"
1656 i686_deps="x86"
1657 mmx_deps="x86"
1658 mmxext_deps="mmx"
1659 sse_deps="mmxext"
1660 sse2_deps="sse"
1661 sse3_deps="sse2"
1662 ssse3_deps="sse3"
1663 sse4_deps="ssse3"
1664 sse42_deps="sse4"
1665 avx_deps="sse42"
1666 xop_deps="avx"
1667 fma3_deps="avx"
1668 fma4_deps="avx"
1669 avx2_deps="avx"
1670
1671 mmx_external_deps="yasm"
1672 mmx_inline_deps="inline_asm"
1673 mmx_suggest="mmx_external mmx_inline"
1674
1675 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1676     eval dep=\$${ext}_deps
1677     eval ${ext}_external_deps='"${dep}_external"'
1678     eval ${ext}_inline_deps='"${dep}_inline"'
1679     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1680 done
1681
1682 aligned_stack_if_any="aarch64 ppc x86"
1683 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1684 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1685 fast_unaligned_if_any="aarch64 ppc x86"
1686
1687 need_memalign="altivec neon sse"
1688
1689 # system capabilities
1690 log2_deps="!libc_msvcrt"
1691
1692 symver_if_any="symver_asm_label symver_gnu_asm"
1693
1694 # threading support
1695 atomics_gcc_if="sync_val_compare_and_swap"
1696 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1697 atomics_win32_if="MemoryBarrier"
1698 atomics_native_if_any="$ATOMICS_LIST"
1699 w32threads_deps="atomics_native"
1700 threads_if_any="$THREADS_LIST"
1701
1702 # subsystems
1703 dct_select="rdft"
1704 error_resilience_select="dsputil"
1705 mdct_select="fft"
1706 rdft_select="fft"
1707 mpegaudio_select="mpegaudiodsp"
1708 mpegaudiodsp_select="dct"
1709 mpegvideo_select="blockdsp dsputil hpeldsp videodsp"
1710 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
1711
1712 # decoders / encoders
1713 aac_decoder_select="mdct sinewin"
1714 aac_encoder_select="audio_frame_queue mdct sinewin"
1715 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1716 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1717 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
1718 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
1719 aic_decoder_select="dsputil golomb"
1720 alac_encoder_select="lpc"
1721 als_decoder_select="dsputil"
1722 amrnb_decoder_select="lsp"
1723 amrwb_decoder_select="lsp"
1724 amv_decoder_select="sp5x_decoder"
1725 ape_decoder_select="dsputil"
1726 asv1_decoder_select="blockdsp dsputil"
1727 asv1_encoder_select="dsputil"
1728 asv2_decoder_select="blockdsp dsputil"
1729 asv2_encoder_select="dsputil"
1730 atrac1_decoder_select="mdct sinewin"
1731 atrac3_decoder_select="mdct"
1732 atrac3p_decoder_select="mdct sinewin"
1733 bink_decoder_select="blockdsp hpeldsp"
1734 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1735 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1736 cavs_decoder_select="blockdsp dsputil golomb h264chroma qpeldsp videodsp"
1737 cllc_decoder_select="dsputil"
1738 comfortnoise_encoder_select="lpc"
1739 cook_decoder_select="audiodsp mdct sinewin"
1740 cscd_decoder_select="lzo"
1741 cscd_decoder_suggest="zlib"
1742 dca_decoder_select="mdct"
1743 dnxhd_decoder_select="blockdsp dsputil"
1744 dnxhd_encoder_select="aandcttables blockdsp dsputil mpegvideoenc"
1745 dvvideo_decoder_select="dsputil"
1746 dvvideo_encoder_select="dsputil"
1747 dxa_decoder_deps="zlib"
1748 eac3_decoder_select="ac3_decoder"
1749 eac3_encoder_select="ac3_encoder"
1750 eamad_decoder_select="aandcttables blockdsp dsputil mpegvideo"
1751 eatgq_decoder_select="aandcttables dsputil"
1752 eatqi_decoder_select="aandcttables blockdsp dsputil error_resilience mpegvideo"
1753 exr_decoder_deps="zlib"
1754 ffv1_decoder_select="golomb rangecoder"
1755 ffv1_encoder_select="rangecoder"
1756 ffvhuff_decoder_select="huffyuv_decoder"
1757 ffvhuff_encoder_select="huffyuv_encoder"
1758 fic_decoder_select="golomb"
1759 flac_decoder_select="golomb"
1760 flac_encoder_select="dsputil golomb lpc"
1761 flashsv_decoder_deps="zlib"
1762 flashsv_encoder_deps="zlib"
1763 flashsv2_decoder_deps="zlib"
1764 flv_decoder_select="h263_decoder"
1765 flv_encoder_select="h263_encoder"
1766 fourxm_decoder_select="blockdsp dsputil"
1767 fraps_decoder_select="dsputil huffman"
1768 g2m_decoder_deps="zlib"
1769 g2m_decoder_select="blockdsp dsputil"
1770 h261_decoder_select="error_resilience mpegvideo"
1771 h261_encoder_select="aandcttables mpegvideoenc"
1772 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo qpeldsp"
1773 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1774 h263i_decoder_select="h263_decoder"
1775 h263p_encoder_select="h263_encoder"
1776 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1777 h264_decoder_suggest="error_resilience"
1778 hevc_decoder_select="cabac dsputil golomb videodsp"
1779 huffyuv_decoder_select="dsputil huffyuvdsp"
1780 huffyuv_encoder_select="dsputil huffman huffyuvencdsp"
1781 iac_decoder_select="imc_decoder"
1782 imc_decoder_select="dsputil fft mdct sinewin"
1783 indeo3_decoder_select="hpeldsp"
1784 interplay_video_decoder_select="hpeldsp"
1785 jpegls_decoder_select="golomb mjpeg_decoder"
1786 jpegls_encoder_select="golomb"
1787 jv_decoder_select="blockdsp"
1788 lagarith_decoder_select="huffyuvdsp"
1789 ljpeg_encoder_select="aandcttables mpegvideoenc"
1790 loco_decoder_select="golomb"
1791 mdec_decoder_select="blockdsp dsputil error_resilience mpegvideo"
1792 metasound_decoder_select="lsp mdct sinewin"
1793 mimic_decoder_select="blockdsp dsputil hpeldsp"
1794 mjpeg_decoder_select="blockdsp dsputil hpeldsp"
1795 mjpeg_encoder_select="aandcttables mpegvideoenc"
1796 mjpegb_decoder_select="mjpeg_decoder"
1797 mlp_decoder_select="mlp_parser"
1798 motionpixels_decoder_select="dsputil"
1799 mp1_decoder_select="mpegaudio"
1800 mp1float_decoder_select="mpegaudio"
1801 mp2_decoder_select="mpegaudio"
1802 mp2float_decoder_select="mpegaudio"
1803 mp3_decoder_select="mpegaudio"
1804 mp3adu_decoder_select="mpegaudio"
1805 mp3adufloat_decoder_select="mpegaudio"
1806 mp3float_decoder_select="mpegaudio"
1807 mp3on4_decoder_select="mpegaudio"
1808 mp3on4float_decoder_select="mpegaudio"
1809 mpc7_decoder_select="dsputil mpegaudiodsp"
1810 mpc8_decoder_select="mpegaudiodsp"
1811 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1812 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1813 mpeg1video_decoder_select="error_resilience mpegvideo"
1814 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1815 mpeg2video_decoder_select="error_resilience mpegvideo"
1816 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1817 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1818 mpeg4_encoder_select="h263_encoder"
1819 msmpeg4v1_decoder_select="h263_decoder"
1820 msmpeg4v2_decoder_select="h263_decoder"
1821 msmpeg4v2_encoder_select="h263_encoder"
1822 msmpeg4v3_decoder_select="h263_decoder"
1823 msmpeg4v3_encoder_select="h263_encoder"
1824 mss2_decoder_select="error_resilience qpeldsp vc1_decoder"
1825 mxpeg_decoder_select="mjpeg_decoder"
1826 nellymoser_decoder_select="mdct sinewin"
1827 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1828 nuv_decoder_select="dsputil lzo"
1829 on2avc_decoder_select="mdct"
1830 opus_decoder_deps="avresample"
1831 png_decoder_deps="zlib"
1832 png_encoder_deps="zlib"
1833 png_encoder_select="huffyuvencdsp"
1834 prores_decoder_select="dsputil"
1835 prores_encoder_select="dsputil"
1836 qcelp_decoder_select="lsp"
1837 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1838 ra_144_encoder_select="audio_frame_queue lpc"
1839 ralf_decoder_select="golomb"
1840 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1841 rv10_encoder_select="h263_encoder"
1842 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1843 rv20_encoder_select="h263_encoder"
1844 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1845 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1846 shorten_decoder_select="golomb"
1847 sipr_decoder_select="lsp"
1848 sp5x_decoder_select="mjpeg_decoder"
1849 svq1_decoder_select="hpeldsp"
1850 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1851 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1852 svq3_decoder_suggest="zlib"
1853 tak_decoder_select="audiodsp"
1854 theora_decoder_select="vp3_decoder"
1855 thp_decoder_select="mjpeg_decoder"
1856 tiff_decoder_suggest="zlib"
1857 tiff_encoder_suggest="zlib"
1858 truehd_decoder_select="mlp_decoder"
1859 truemotion2_decoder_select="dsputil"
1860 truespeech_decoder_select="dsputil"
1861 tscc_decoder_deps="zlib"
1862 twinvq_decoder_select="mdct lsp sinewin"
1863 utvideo_decoder_select="dsputil"
1864 utvideo_encoder_select="dsputil huffman huffyuvencdsp"
1865 vble_decoder_select="huffyuvdsp"
1866 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 qpeldsp"
1867 vc1image_decoder_select="vc1_decoder"
1868 vorbis_decoder_select="mdct"
1869 vorbis_encoder_select="mdct"
1870 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1871 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1872 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1873 vp6a_decoder_select="vp6_decoder"
1874 vp6f_decoder_select="vp6_decoder"
1875 vp7_decoder_select="h264pred videodsp"
1876 vp8_decoder_select="h264pred videodsp"
1877 vp9_decoder_select="videodsp"
1878 webp_decoder_select="vp8_decoder"
1879 wmapro_decoder_select="mdct sinewin"
1880 wmav1_decoder_select="mdct sinewin"
1881 wmav1_encoder_select="mdct sinewin"
1882 wmav2_decoder_select="mdct sinewin"
1883 wmav2_encoder_select="mdct sinewin"
1884 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1885 wmv1_decoder_select="h263_decoder"
1886 wmv1_encoder_select="h263_encoder"
1887 wmv2_decoder_select="blockdsp h263_decoder intrax8 videodsp"
1888 wmv2_encoder_select="h263_encoder"
1889 wmv3_decoder_select="vc1_decoder"
1890 wmv3image_decoder_select="wmv3_decoder"
1891 zerocodec_decoder_deps="zlib"
1892 zlib_decoder_deps="zlib"
1893 zlib_encoder_deps="zlib"
1894 zmbv_decoder_deps="zlib"
1895 zmbv_encoder_deps="zlib"
1896
1897 # hardware accelerators
1898 dxva2_deps="dxva2api_h"
1899 vaapi_deps="va_va_h"
1900 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1901 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1902 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1903
1904 h263_vaapi_hwaccel_deps="vaapi"
1905 h263_vaapi_hwaccel_select="h263_decoder"
1906 h263_vdpau_hwaccel_deps="vdpau"
1907 h263_vdpau_hwaccel_select="h263_decoder"
1908 h264_dxva2_hwaccel_deps="dxva2"
1909 h264_dxva2_hwaccel_select="h264_decoder"
1910 h264_vaapi_hwaccel_deps="vaapi"
1911 h264_vaapi_hwaccel_select="h264_decoder"
1912 h264_vda_hwaccel_deps="vda"
1913 h264_vda_hwaccel_select="h264_decoder"
1914 h264_vda_old_hwaccel_deps="vda"
1915 h264_vda_old_hwaccel_select="h264_decoder"
1916 h264_vdpau_hwaccel_deps="vdpau"
1917 h264_vdpau_hwaccel_select="h264_decoder"
1918 mpeg1_vdpau_hwaccel_deps="vdpau"
1919 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1920 mpeg2_dxva2_hwaccel_deps="dxva2"
1921 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1922 mpeg2_vaapi_hwaccel_deps="vaapi"
1923 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1924 mpeg2_vdpau_hwaccel_deps="vdpau"
1925 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1926 mpeg4_vaapi_hwaccel_deps="vaapi"
1927 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1928 mpeg4_vdpau_hwaccel_deps="vdpau"
1929 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1930 vc1_dxva2_hwaccel_deps="dxva2"
1931 vc1_dxva2_hwaccel_select="vc1_decoder"
1932 vc1_vaapi_hwaccel_deps="vaapi"
1933 vc1_vaapi_hwaccel_select="vc1_decoder"
1934 vc1_vdpau_hwaccel_deps="vdpau"
1935 vc1_vdpau_hwaccel_select="vc1_decoder"
1936 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1937 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1938 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1939
1940 # parsers
1941 h264_parser_select="h264_decoder"
1942 mpegvideo_parser_select="error_resilience mpegvideo"
1943 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
1944 vc1_parser_select="mpegvideo"
1945
1946 # external libraries
1947 libfaac_encoder_deps="libfaac"
1948 libfaac_encoder_select="audio_frame_queue"
1949 libfdk_aac_decoder_deps="libfdk_aac"
1950 libfdk_aac_encoder_deps="libfdk_aac"
1951 libfdk_aac_encoder_select="audio_frame_queue"
1952 libgsm_decoder_deps="libgsm"
1953 libgsm_encoder_deps="libgsm"
1954 libgsm_ms_decoder_deps="libgsm"
1955 libgsm_ms_encoder_deps="libgsm"
1956 libilbc_decoder_deps="libilbc"
1957 libilbc_encoder_deps="libilbc"
1958 libmp3lame_encoder_deps="libmp3lame"
1959 libmp3lame_encoder_select="audio_frame_queue"
1960 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1961 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1962 libopencore_amrnb_encoder_select="audio_frame_queue"
1963 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1964 libopenjpeg_decoder_deps="libopenjpeg"
1965 libopenjpeg_encoder_deps="libopenjpeg"
1966 libopus_decoder_deps="libopus"
1967 libopus_encoder_deps="libopus"
1968 libopus_encoder_select="audio_frame_queue"
1969 libschroedinger_decoder_deps="libschroedinger"
1970 libschroedinger_encoder_deps="libschroedinger"
1971 libspeex_decoder_deps="libspeex"
1972 libspeex_encoder_deps="libspeex"
1973 libspeex_encoder_select="audio_frame_queue"
1974 libtheora_encoder_deps="libtheora"
1975 libtwolame_encoder_deps="libtwolame"
1976 libvo_aacenc_encoder_deps="libvo_aacenc"
1977 libvo_aacenc_encoder_select="audio_frame_queue"
1978 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1979 libvorbis_encoder_deps="libvorbis"
1980 libvorbis_encoder_select="audio_frame_queue"
1981 libvpx_vp8_decoder_deps="libvpx"
1982 libvpx_vp8_encoder_deps="libvpx"
1983 libvpx_vp9_decoder_deps="libvpx"
1984 libvpx_vp9_encoder_deps="libvpx"
1985 libwavpack_encoder_deps="libwavpack"
1986 libwebp_encoder_deps="libwebp"
1987 libx264_encoder_deps="libx264"
1988 libx265_encoder_deps="libx265"
1989 libxavs_encoder_deps="libxavs"
1990 libxvid_encoder_deps="libxvid"
1991
1992 # demuxers / muxers
1993 ac3_demuxer_select="ac3_parser"
1994 asf_demuxer_select="riffdec"
1995 asf_muxer_select="riffenc"
1996 asf_stream_muxer_select="asf_muxer"
1997 avi_demuxer_select="riffdec"
1998 avi_muxer_select="riffenc"
1999 avisynth_demuxer_deps="avisynth"
2000 avisynth_demuxer_select="riffdec"
2001 caf_demuxer_select="riffdec"
2002 dirac_demuxer_select="dirac_parser"
2003 dxa_demuxer_select="riffdec"
2004 eac3_demuxer_select="ac3_parser"
2005 f4v_muxer_select="mov_muxer"
2006 flac_demuxer_select="flac_parser"
2007 hds_muxer_select="flv_muxer"
2008 hls_muxer_select="mpegts_muxer"
2009 ipod_muxer_select="mov_muxer"
2010 ismv_muxer_select="mov_muxer"
2011 matroska_audio_muxer_select="matroska_muxer"
2012 matroska_demuxer_select="riffdec"
2013 matroska_demuxer_suggest="bzlib lzo zlib"
2014 matroska_muxer_select="riffenc"
2015 mmf_muxer_select="riffenc"
2016 mov_demuxer_select="riffdec"
2017 mov_demuxer_suggest="zlib"
2018 mov_muxer_select="riffenc rtpenc_chain"
2019 mp3_demuxer_select="mpegaudio_parser"
2020 mp4_muxer_select="mov_muxer"
2021 mpegts_muxer_select="adts_muxer latm_muxer"
2022 mpegtsraw_demuxer_select="mpegts_demuxer"
2023 mxf_d10_muxer_select="mxf_muxer"
2024 nut_muxer_select="riffenc"
2025 nuv_demuxer_select="riffdec"
2026 ogg_demuxer_select="golomb"
2027 psp_muxer_select="mov_muxer"
2028 rtp_demuxer_select="sdp_demuxer"
2029 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2030 rtsp_demuxer_select="http_protocol rtpdec"
2031 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2032 sap_demuxer_select="sdp_demuxer"
2033 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2034 sdp_demuxer_select="rtpdec"
2035 smoothstreaming_muxer_select="ismv_muxer"
2036 spdif_muxer_select="aac_parser"
2037 tak_demuxer_select="tak_parser"
2038 tg2_muxer_select="mov_muxer"
2039 tgp_muxer_select="mov_muxer"
2040 w64_demuxer_select="wav_demuxer"
2041 wav_demuxer_select="riffdec"
2042 wav_muxer_select="riffenc"
2043 webm_muxer_select="riffenc"
2044 wtv_demuxer_select="riffdec"
2045 xmv_demuxer_select="riffdec"
2046 xwma_demuxer_select="riffdec"
2047
2048 # indevs / outdevs
2049 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2050 alsa_outdev_deps="alsa_asoundlib_h"
2051 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2052 dv1394_indev_deps="dv1394"
2053 dv1394_indev_select="dv_demuxer"
2054 fbdev_indev_deps="linux_fb_h"
2055 jack_indev_deps="jack_jack_h pthreads"
2056 libcdio_indev_deps="libcdio"
2057 libdc1394_indev_deps="libdc1394"
2058 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2059 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2060 pulse_indev_deps="libpulse"
2061 sndio_indev_deps="sndio_h"
2062 sndio_outdev_deps="sndio_h"
2063 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2064 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2065 vfwcap_indev_extralibs="-lavicap32"
2066 x11grab_indev_deps="x11grab XShmCreateImage"
2067
2068 # protocols
2069 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2070 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2071 ffrtmpcrypt_protocol_select="tcp_protocol"
2072 ffrtmphttp_protocol_deps="!librtmp_protocol"
2073 ffrtmphttp_protocol_select="http_protocol"
2074 gopher_protocol_select="network"
2075 http_protocol_select="tcp_protocol"
2076 httpproxy_protocol_select="tcp_protocol"
2077 https_protocol_select="tls_protocol"
2078 librtmp_protocol_deps="librtmp"
2079 librtmpe_protocol_deps="librtmp"
2080 librtmps_protocol_deps="librtmp"
2081 librtmpt_protocol_deps="librtmp"
2082 librtmpte_protocol_deps="librtmp"
2083 mmsh_protocol_select="http_protocol"
2084 mmst_protocol_select="network"
2085 rtmp_protocol_deps="!librtmp_protocol"
2086 rtmp_protocol_select="tcp_protocol"
2087 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2088 rtmps_protocol_deps="!librtmp_protocol"
2089 rtmps_protocol_select="tls_protocol"
2090 rtmpt_protocol_select="ffrtmphttp_protocol"
2091 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2092 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2093 rtp_protocol_select="udp_protocol"
2094 sctp_protocol_deps="struct_sctp_event_subscribe"
2095 sctp_protocol_select="network"
2096 srtp_protocol_select="rtp_protocol"
2097 tcp_protocol_select="network"
2098 tls_protocol_deps_any="openssl gnutls"
2099 tls_protocol_select="tcp_protocol"
2100 udp_protocol_select="network"
2101 unix_protocol_deps="sys_un_h"
2102 unix_protocol_select="network"
2103
2104 # filters
2105 blackframe_filter_deps="gpl"
2106 boxblur_filter_deps="gpl"
2107 bs2b_filter_deps="libbs2b"
2108 cropdetect_filter_deps="gpl"
2109 delogo_filter_deps="gpl"
2110 drawtext_filter_deps="libfreetype"
2111 frei0r_filter_deps="frei0r dlopen"
2112 frei0r_filter_extralibs='$ldl'
2113 frei0r_src_filter_deps="frei0r dlopen"
2114 frei0r_src_filter_extralibs='$ldl'
2115 hqdn3d_filter_deps="gpl"
2116 interlace_filter_deps="gpl"
2117 ocv_filter_deps="libopencv"
2118 resample_filter_deps="avresample"
2119 scale_filter_deps="swscale"
2120
2121 # examples
2122 avcodec_example_deps="avcodec avutil"
2123 filter_audio_example_deps="avfilter avutil"
2124 metadata_example_deps="avformat avutil"
2125 output_example_deps="avcodec avformat avutil swscale"
2126 transcode_aac_example_deps="avcodec avformat avresample"
2127
2128 # libraries, in linking order
2129 avcodec_deps="avutil"
2130 avdevice_deps="avformat avcodec avutil"
2131 avfilter_deps="avutil"
2132 avformat_deps="avcodec avutil"
2133 avresample_deps="avutil"
2134 swscale_deps="avutil"
2135
2136 # programs
2137 avconv_deps="avcodec avfilter avformat avresample swscale"
2138 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2139                fps_filter null_filter resample_filter scale_filter
2140                setpts_filter trim_filter"
2141 avplay_deps="avcodec avformat avresample swscale sdl"
2142 avplay_libs='$sdl_libs'
2143 avplay_select="rdft"
2144 avprobe_deps="avcodec avformat"
2145
2146 # documentation
2147 pod2man_deps="doc"
2148 texi2html_deps="doc"
2149
2150 # default parameters
2151
2152 logfile="config.log"
2153
2154 # installation paths
2155 prefix_default="/usr/local"
2156 bindir_default='${prefix}/bin'
2157 datadir_default='${prefix}/share/avconv'
2158 docdir_default='${prefix}/share/doc/libav'
2159 incdir_default='${prefix}/include'
2160 libdir_default='${prefix}/lib'
2161 mandir_default='${prefix}/share/man'
2162 shlibdir_default="$libdir_default"
2163
2164 # toolchain
2165 ar_default="ar"
2166 cc_default="gcc"
2167 host_cc_default="gcc"
2168 cp_f="cp -f"
2169 ln_s="ln -s -f"
2170 nm_default="nm -g"
2171 objformat="elf"
2172 pkg_config_default=pkg-config
2173 ranlib="ranlib"
2174 strip="strip"
2175 yasmexe="yasm"
2176
2177 nogas=":"
2178
2179 # machine
2180 arch_default=$(uname -m)
2181 cpu="generic"
2182
2183 # OS
2184 target_os_default=$(tolower $(uname -s))
2185 host_os=$target_os_default
2186
2187 # configurable options
2188 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2189
2190 enable asm
2191 enable debug
2192 enable doc
2193 enable optimizations
2194 enable safe_bitstream_reader
2195 enable static
2196 enable swscale_alpha
2197
2198 # By default, enable only those hwaccels that have no external dependencies.
2199 enable dxva2 vdpau
2200
2201 # build settings
2202 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2203 LIBPREF="lib"
2204 LIBSUF=".a"
2205 FULLNAME='$(NAME)$(BUILDSUF)'
2206 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2207 SLIBPREF="lib"
2208 SLIBSUF=".so"
2209 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2210 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2211 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2212 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2213 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2214 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2215
2216 asflags_filter=echo
2217 cflags_filter=echo
2218 ldflags_filter=echo
2219
2220 AS_C='-c'
2221 AS_O='-o $@'
2222 CC_C='-c'
2223 CC_E='-E -o $@'
2224 CC_O='-o $@'
2225 LD_O='-o $@'
2226 LD_LIB='-l%'
2227 LD_PATH='-L'
2228 HOSTCC_C='-c'
2229 HOSTCC_E='-E -o $@'
2230 HOSTCC_O='-o $@'
2231 HOSTLD_O='-o $@'
2232
2233 host_libs='-lm'
2234 host_cflags_filter=echo
2235 host_ldflags_filter=echo
2236
2237 target_path='$(CURDIR)'
2238
2239 # since the object filename is not given with the -MM flag, the compiler
2240 # is only able to print the basename, and we must add the path ourselves
2241 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2242 DEPFLAGS='-MM'
2243
2244 # find source path
2245 if test -f configure; then
2246     source_path=.
2247 else
2248     source_path=$(cd $(dirname "$0"); pwd)
2249     echo "$source_path" | grep -q '[[:blank:]]' &&
2250         die "Out of tree builds are impossible with whitespace in source path."
2251     test -e "$source_path/config.h" &&
2252         die "Out of tree builds are impossible with config.h in source dir."
2253 fi
2254
2255 for v in "$@"; do
2256     r=${v#*=}
2257     l=${v%"$r"}
2258     r=$(sh_quote "$r")
2259     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2260 done
2261
2262 find_things(){
2263     thing=$1
2264     pattern=$2
2265     file=$source_path/$3
2266     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2267 }
2268
2269 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2270 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2271 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2272 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2273 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2274 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2275 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2276 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2277 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2278 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2279 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2280
2281 ALL_COMPONENTS="
2282     $BSF_LIST
2283     $DECODER_LIST
2284     $DEMUXER_LIST
2285     $ENCODER_LIST
2286     $FILTER_LIST
2287     $HWACCEL_LIST
2288     $INDEV_LIST
2289     $MUXER_LIST
2290     $OUTDEV_LIST
2291     $PARSER_LIST
2292     $PROTOCOL_LIST
2293 "
2294
2295 for n in $COMPONENT_LIST; do
2296     v=$(toupper ${n%s})_LIST
2297     eval enable \$$v
2298     eval ${n}_if_any="\$$v"
2299 done
2300
2301 enable $ARCH_EXT_LIST
2302
2303 die_unknown(){
2304     echo "Unknown option \"$1\"."
2305     echo "See $0 --help for available options."
2306     exit 1
2307 }
2308
2309 print_3_columns() {
2310     cat | tr ' ' '\n' | sort | pr -r -3 -t
2311 }
2312
2313 show_list() {
2314     suffix=_$1
2315     shift
2316     echo $* | sed s/$suffix//g | print_3_columns
2317     exit 0
2318 }
2319
2320 rand_list(){
2321     IFS=', '
2322     set -- $*
2323     unset IFS
2324     for thing; do
2325         comp=${thing%:*}
2326         prob=${thing#$comp}
2327         prob=${prob#:}
2328         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2329         echo "prob ${prob:-0.5}"
2330         printf '%s\n' $comp
2331     done
2332 }
2333
2334 do_random(){
2335     action=$1
2336     shift
2337     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2338     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2339 }
2340
2341 for opt do
2342     optval="${opt#*=}"
2343     case "$opt" in
2344         --extra-ldflags=*)
2345             add_ldflags $optval
2346         ;;
2347         --extra-libs=*)
2348             add_extralibs $optval
2349         ;;
2350         --disable-devices)
2351             disable $INDEV_LIST $OUTDEV_LIST
2352         ;;
2353         --enable-debug=*)
2354             debuglevel="$optval"
2355         ;;
2356         --disable-programs)
2357             disable $PROGRAM_LIST
2358         ;;
2359         --disable-everything)
2360             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2361         ;;
2362         --disable-all)
2363             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2364             disable $LIBRARY_LIST $PROGRAM_LIST doc
2365         ;;
2366         --enable-random|--disable-random)
2367             action=${opt%%-random}
2368             do_random ${action#--} $COMPONENT_LIST
2369         ;;
2370         --enable-random=*|--disable-random=*)
2371             action=${opt%%-random=*}
2372             do_random ${action#--} $optval
2373         ;;
2374         --enable-*=*|--disable-*=*)
2375             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2376             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2377             eval list=\$$(toupper $thing)_LIST
2378             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2379             $action $(filter "$name" $list)
2380         ;;
2381         --enable-avserver|--disable-avserver*)
2382             warn "avserver has been removed, the ${opt} option is only"\
2383                  "provided for compatibility and will be removed in the future"
2384         ;;
2385         --enable-?*|--disable-?*)
2386             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2387             if is_in $option $COMPONENT_LIST; then
2388                 test $action = disable && action=unset
2389                 eval $action \$$(toupper ${option%s})_LIST
2390             elif is_in $option $CMDLINE_SELECT; then
2391                 $action $option
2392             else
2393                 die_unknown $opt
2394             fi
2395         ;;
2396         --list-*)
2397             NAME="${opt#--list-}"
2398             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2399             NAME=${NAME%s}
2400             eval show_list $NAME \$$(toupper $NAME)_LIST
2401         ;;
2402         --help|-h) show_help
2403         ;;
2404         *)
2405             optname="${opt%%=*}"
2406             optname="${optname#--}"
2407             optname=$(echo "$optname" | sed 's/-/_/g')
2408             if is_in $optname $CMDLINE_SET; then
2409                 eval $optname='$optval'
2410             elif is_in $optname $CMDLINE_APPEND; then
2411                 append $optname "$optval"
2412             else
2413                 die_unknown $opt
2414             fi
2415         ;;
2416     esac
2417 done
2418
2419 disabled logging && logfile=/dev/null
2420
2421 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2422 set >> $logfile
2423
2424 test -n "$cross_prefix" && enable cross_compile
2425
2426 if enabled cross_compile; then
2427     test -n "$arch" && test -n "$target_os" ||
2428         die "Must specify target arch and OS when cross-compiling"
2429 fi
2430
2431 ar_default="${cross_prefix}${ar_default}"
2432 cc_default="${cross_prefix}${cc_default}"
2433 nm_default="${cross_prefix}${nm_default}"
2434 pkg_config_default="${cross_prefix}${pkg_config_default}"
2435 ranlib="${cross_prefix}${ranlib}"
2436 strip="${cross_prefix}${strip}"
2437
2438 sysinclude_default="${sysroot}/usr/include"
2439
2440 case "$toolchain" in
2441     clang-asan)
2442         cc_default="clang"
2443         add_cflags  -fsanitize=address
2444         add_ldflags -fsanitize=address
2445     ;;
2446     clang-tsan)
2447         cc_default="clang"
2448         add_cflags  -fsanitize=thread -pie
2449         add_ldflags -fsanitize=thread -pie
2450     ;;
2451     clang-usan)
2452         cc_default="clang"
2453         add_cflags  -fsanitize=undefined -O1
2454         add_ldflags -fsanitize=undefined
2455     ;;
2456     gcc-asan)
2457         cc_default="gcc"
2458         add_cflags  -fsanitize=address
2459         add_ldflags -fsanitize=address
2460     ;;
2461     gcc-tsan)
2462         cc_default="gcc"
2463         add_cflags  -fsanitize=thread -pie -fPIC
2464         add_ldflags -fsanitize=thread -pie -fPIC
2465     ;;
2466     gcc-usan)
2467         cc_default="gcc"
2468         add_cflags  -fsanitize=undefined
2469         add_ldflags -fsanitize=undefined
2470     ;;
2471     valgrind-massif)
2472         target_exec_default="valgrind"
2473         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2474     ;;
2475     valgrind-memcheck)
2476         target_exec_default="valgrind"
2477         target_exec_args="--track-origins=yes --leak-check=full"
2478     ;;
2479     msvc)
2480         # Check whether the current MSVC version needs the C99 converter.
2481         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2482         # support enough of C99 to build libav. Default to the new
2483         # behaviour if the regexp was unable to match anything, since this
2484         # successfully parses the version number of existing supported
2485         # versions that require the converter (MSVC 2010 and 2012).
2486         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2487         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2488             cc_default="cl"
2489         else
2490             cc_default="c99wrap cl"
2491         fi
2492         ld_default="link"
2493         nm_default="dumpbin -symbols"
2494         ar_default="lib"
2495         target_os_default="win32"
2496         # Use a relative path for TMPDIR. This makes sure all the
2497         # ffconf temp files are written with a relative path, avoiding
2498         # issues with msys/win32 path conversion for MSVC parameters
2499         # such as -Fo<file> or -out:<file>.
2500         TMPDIR=.
2501     ;;
2502     icl)
2503         cc_default="icl"
2504         ld_default="xilink"
2505         nm_default="dumpbin -symbols"
2506         ar_default="xilib"
2507         target_os_default="win32"
2508         TMPDIR=.
2509     ;;
2510     gcov)
2511         add_cflags  -fprofile-arcs -ftest-coverage
2512         add_ldflags -fprofile-arcs -ftest-coverage
2513     ;;
2514     hardened)
2515         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2516         add_ldflags -Wl,-z,relro -Wl,-z,now
2517     ;;
2518     ?*)
2519         die "Unknown toolchain $toolchain"
2520     ;;
2521 esac
2522
2523 set_default arch cc pkg_config sysinclude target_exec target_os
2524 enabled cross_compile || host_cc_default=$cc
2525 set_default host_cc
2526
2527 if ! $pkg_config --version >/dev/null 2>&1; then
2528     warn "$pkg_config not found, library detection may fail."
2529     pkg_config=false
2530 fi
2531
2532 exesuf() {
2533     case $1 in
2534         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2535     esac
2536 }
2537
2538 EXESUF=$(exesuf $target_os)
2539 HOSTEXESUF=$(exesuf $host_os)
2540
2541 # set temporary file name
2542 : ${TMPDIR:=$TEMPDIR}
2543 : ${TMPDIR:=$TMP}
2544 : ${TMPDIR:=/tmp}
2545
2546 if ! check_cmd mktemp -u XXXXXX; then
2547     # simple replacement for missing mktemp
2548     # NOT SAFE FOR GENERAL USE
2549     mktemp(){
2550         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2551     }
2552 fi
2553
2554 tmpfile(){
2555     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2556         (set -C; exec > $tmp) 2>/dev/null ||
2557         die "Unable to create temporary file in $TMPDIR."
2558     append TMPFILES $tmp
2559     eval $1=$tmp
2560 }
2561
2562 trap 'rm -f -- $TMPFILES' EXIT
2563
2564 tmpfile TMPASM .asm
2565 tmpfile TMPC   .c
2566 tmpfile TMPE   $EXESUF
2567 tmpfile TMPH   .h
2568 tmpfile TMPO   .o
2569 tmpfile TMPS   .S
2570 tmpfile TMPSH  .sh
2571 tmpfile TMPV   .ver
2572
2573 unset -f mktemp
2574
2575 chmod +x $TMPE
2576
2577 # make sure we can execute files in $TMPDIR
2578 cat > $TMPSH 2>> $logfile <<EOF
2579 #! /bin/sh
2580 EOF
2581 chmod +x $TMPSH >> $logfile 2>&1
2582 if ! $TMPSH >> $logfile 2>&1; then
2583     cat <<EOF
2584 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2585 variable to another directory and make sure that it is not mounted noexec.
2586 EOF
2587     die "Sanity test failed."
2588 fi
2589
2590 ccc_flags(){
2591     for flag; do
2592         case $flag in
2593             -std=c99)           echo -c99                       ;;
2594             -mcpu=*)            echo -arch ${flag#*=}           ;;
2595             -mieee)             echo -ieee                      ;;
2596             -O*|-fast)          echo $flag                      ;;
2597             -fno-math-errno)    echo -assume nomath_errno       ;;
2598             -g)                 echo -g3                        ;;
2599             -Wall)              echo -msg_enable level2         ;;
2600             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2601             -Wl,*)              echo $flag                      ;;
2602             -f*|-W*)                                            ;;
2603             *)                  echo $flag                      ;;
2604         esac
2605    done
2606 }
2607
2608 cparser_flags(){
2609     for flag; do
2610         case $flag in
2611             -Wno-switch)             echo -Wno-switch-enum ;;
2612             -Wno-format-zero-length) ;;
2613             -Wdisabled-optimization) ;;
2614             -Wno-pointer-sign)       echo -Wno-other ;;
2615             *)                       echo $flag ;;
2616         esac
2617     done
2618 }
2619
2620 msvc_common_flags(){
2621     for flag; do
2622         case $flag in
2623             # In addition to specifying certain flags under the compiler
2624             # specific filters, they must be specified here as well or else the
2625             # generic catch all at the bottom will print the original flag.
2626             -Wall)                ;;
2627             -std=c99)             ;;
2628             # Common flags
2629             -fomit-frame-pointer) ;;
2630             -g)                   echo -Z7 ;;
2631             -fno-math-errno)      ;;
2632             -fno-common)          ;;
2633             -fno-signed-zeros)    ;;
2634             -fPIC)                ;;
2635             -mthumb)              ;;
2636             -march=*)             ;;
2637             -lz)                  echo zlib.lib ;;
2638             -lavifil32)           echo vfw32.lib ;;
2639             -lavicap32)           echo vfw32.lib user32.lib ;;
2640             -l*)                  echo ${flag#-l}.lib ;;
2641             *)                    echo $flag ;;
2642         esac
2643     done
2644 }
2645
2646 msvc_flags(){
2647     msvc_common_flags "$@"
2648     for flag; do
2649         case $flag in
2650             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2651                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2652                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2653                                        -wd4273 ;;
2654         esac
2655     done
2656 }
2657
2658 icl_flags(){
2659     msvc_common_flags "$@"
2660     for flag; do
2661         case $flag in
2662             # Despite what Intel's documentation says -Wall, which is supported
2663             # on Windows, does enable remarks so disable them here.
2664             -Wall)                echo $flag -Qdiag-disable:remark ;;
2665             -std=c99)             echo -Qstd=c99 ;;
2666         esac
2667     done
2668 }
2669
2670 pgi_flags(){
2671     for flag; do
2672         case $flag in
2673             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2674             -fomit-frame-pointer) echo -Mnoframe ;;
2675             -g)                   echo -gopt ;;
2676             *)                    echo $flag ;;
2677         esac
2678     done
2679 }
2680
2681 suncc_flags(){
2682     for flag; do
2683         case $flag in
2684             -march=*|-mcpu=*)
2685                 case "${flag#*=}" in
2686                     native)                   echo -xtarget=native       ;;
2687                     v9|niagara)               echo -xarch=sparc          ;;
2688                     ultrasparc)               echo -xarch=sparcvis       ;;
2689                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2690                     i586|pentium)             echo -xchip=pentium        ;;
2691                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2692                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2693                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2694                     pentium4*)          echo -xtarget=pentium4           ;;
2695                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2696                     *-sse3)             echo -xarch=sse3                 ;;
2697                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2698                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2699                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2700                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2701                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2702                     k8|opteron|athlon64|athlon-fx)
2703                                                echo -xarch=sse2a         ;;
2704                     athlon*)                   echo -xarch=pentium_proa  ;;
2705                 esac
2706                 ;;
2707             -std=c99)             echo -xc99              ;;
2708             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2709             -fPIC)                echo -KPIC -xcode=pic32 ;;
2710             -W*,*)                echo $flag              ;;
2711             -f*-*|-W*|-mimpure-text)                      ;;
2712             -shared)              echo -G                 ;;
2713             *)                    echo $flag              ;;
2714         esac
2715     done
2716 }
2717
2718 tms470_flags(){
2719     for flag; do
2720         case $flag in
2721             -march=*|-mcpu=*)
2722                 case "${flag#*=}" in
2723                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2724                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2725                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2726                     armv6*|arm11*)          echo -mv=6   ;;
2727                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2728                                             echo -mv=5e  ;;
2729                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2730                 esac
2731                 ;;
2732             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2733             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2734             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2735             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2736             -msoft-float)   echo --float_support=vfplib       ;;
2737             -O[0-3]|-mf=*)  echo $flag                        ;;
2738             -g)             echo -g -mn                       ;;
2739             -pds=*)         echo $flag                        ;;
2740             -D*|-I*)        echo $flag                        ;;
2741             --gcc|--abi=*)  echo $flag                        ;;
2742             -me)            echo $flag                        ;;
2743         esac
2744     done
2745 }
2746
2747 probe_cc(){
2748     pfx=$1
2749     _cc=$2
2750
2751     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2752     unset _ld_o _ldflags _ld_lib _ld_path
2753     unset _depflags _DEPCMD _DEPFLAGS
2754     _flags_filter=echo
2755
2756     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2757         _type=llvm_gcc
2758         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2759         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2760         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2761         _cflags_speed='-O3'
2762         _cflags_size='-Os'
2763     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2764         _type=gcc
2765         gcc_version=$($_cc --version | head -n1)
2766         gcc_basever=$($_cc -dumpversion)
2767         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2768         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2769         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2770         if ! $_cc -dumpversion | grep -q '^2\.'; then
2771             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2772         fi
2773         _cflags_speed='-O3'
2774         _cflags_size='-Os'
2775     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2776         _type=icc
2777         _ident=$($_cc --version | head -n1)
2778         _depflags='-MMD'
2779         _cflags_speed='-O3'
2780         _cflags_size='-Os'
2781         _cflags_noopt='-O1'
2782     elif $_cc -v 2>&1 | grep -q xlc; then
2783         _type=xlc
2784         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2785         _cflags_speed='-O5'
2786         _cflags_size='-O5 -qcompact'
2787     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2788         _type=ccc
2789         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2790         _DEPFLAGS='-M'
2791         _cflags_speed='-fast'
2792         _cflags_size='-O1'
2793         _flags_filter=ccc_flags
2794     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2795         test -d "$sysroot" || die "No valid sysroot specified."
2796         _type=armcc
2797         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2798         armcc_conf="$PWD/armcc.conf"
2799         $_cc --arm_linux_configure                 \
2800              --arm_linux_config_file="$armcc_conf" \
2801              --configure_sysroot="$sysroot"        \
2802              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2803              die "Error creating armcc configuration file."
2804         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2805         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2806         as_default="${cross_prefix}gcc"
2807         _depflags='-MMD'
2808         _cflags_speed='-O3'
2809         _cflags_size='-Os'
2810     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2811         _type=tms470
2812         _ident=$($_cc -version | head -n1 | tr -s ' ')
2813         _flags='--gcc --abi=eabi -me'
2814         _cc_e='-ppl -fe=$@'
2815         _cc_o='-fe=$@'
2816         _depflags='-ppa -ppd=$(@:.o=.d)'
2817         _cflags_speed='-O3 -mf=5'
2818         _cflags_size='-O3 -mf=2'
2819         _flags_filter=tms470_flags
2820     elif $_cc -v 2>&1 | grep -q clang; then
2821         _type=clang
2822         _ident=$($_cc --version | head -n1)
2823         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2824         _cflags_speed='-O3'
2825         _cflags_size='-Os'
2826     elif $_cc -V 2>&1 | grep -q Sun; then
2827         _type=suncc
2828         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2829         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2830         _DEPFLAGS='-xM1 -xc99'
2831         _ldflags='-std=c99'
2832         _cflags_speed='-O5'
2833         _cflags_size='-O5 -xspace'
2834         _flags_filter=suncc_flags
2835     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2836         _type=pathscale
2837         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2838         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2839         _cflags_speed='-O2'
2840         _cflags_size='-Os'
2841         _flags_filter='filter_out -Wdisabled-optimization'
2842     elif $_cc -v 2>&1 | grep -q Open64; then
2843         _type=open64
2844         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2845         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2846         _cflags_speed='-O2'
2847         _cflags_size='-Os'
2848         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2849     elif $_cc -V 2>&1 | grep -q Portland; then
2850         _type=pgi
2851         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2852         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2853         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2854         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2855         _cflags_noopt="-O1"
2856         _flags_filter=pgi_flags
2857     elif $_cc 2>&1 | grep -q Microsoft; then
2858         _type=msvc
2859         _ident=$($cc 2>&1 | head -n1)
2860         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2861         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2862         _cflags_speed="-O2"
2863         _cflags_size="-O1"
2864         if $_cc 2>&1 | grep -q Linker; then
2865             _ld_o='-out:$@'
2866         else
2867             _ld_o='-Fe$@'
2868         fi
2869         _cc_o='-Fo$@'
2870         _cc_e='-P -Fi$@'
2871         _flags_filter=msvc_flags
2872         _ld_lib='lib%.a'
2873         _ld_path='-libpath:'
2874         _flags='-nologo'
2875         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2876         if [ $pfx = hostcc ]; then
2877             append _cflags -Dsnprintf=_snprintf
2878         fi
2879     elif $_cc 2>&1 | grep -q Intel; then
2880         _type=icl
2881         _ident=$($cc 2>&1 | head -n1)
2882         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2883         # Not only is O3 broken on 13.x+ but it is slower on all previous
2884         # versions (tested) as well.
2885         _cflags_speed="-O2"
2886         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2887         if $_cc 2>&1 | grep -q Linker; then
2888             _ld_o='-out:$@'
2889         else
2890             _ld_o='-Fe$@'
2891         fi
2892         _cc_o='-Fo$@'
2893         _cc_e='-P'
2894         _flags_filter=icl_flags
2895         _ld_lib='lib%.a'
2896         _ld_path='-libpath:'
2897         # -Qdiag-error to make icl error when seeing certain unknown arguments
2898         _flags='-nologo -Qdiag-error:4044,10157'
2899         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2900         # with MSVC which enables it by default.
2901         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2902         if [ $pfx = hostcc ]; then
2903             append _cflags -Dsnprintf=_snprintf
2904         fi
2905     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2906         _type=cparser
2907         _ident=$($_cc --version | head -n1)
2908         _depflags='-MMD'
2909         _cflags_speed='-O4'
2910         _cflags_size='-O2'
2911         _flags_filter=cparser_flags
2912     fi
2913
2914     eval ${pfx}_type=\$_type
2915     eval ${pfx}_ident=\$_ident
2916 }
2917
2918 set_ccvars(){
2919     eval ${1}_C=\${_cc_c-\${${1}_C}}
2920     eval ${1}_E=\${_cc_e-\${${1}_E}}
2921     eval ${1}_O=\${_cc_o-\${${1}_O}}
2922
2923     if [ -n "$_depflags" ]; then
2924         eval ${1}_DEPFLAGS=\$_depflags
2925     else
2926         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2927         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2928         eval DEP${1}FLAGS=\$_flags
2929     fi
2930 }
2931
2932 probe_cc cc "$cc"
2933 cflags_filter=$_flags_filter
2934 cflags_speed=$_cflags_speed
2935 cflags_size=$_cflags_size
2936 cflags_noopt=$_cflags_noopt
2937 add_cflags $_flags $_cflags
2938 cc_ldflags=$_ldflags
2939 set_ccvars CC
2940
2941 probe_cc hostcc "$host_cc"
2942 host_cflags_filter=$_flags_filter
2943 add_host_cflags  $_flags $_cflags
2944 set_ccvars HOSTCC
2945
2946 test -n "$cc_type" && enable $cc_type ||
2947     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2948
2949 : ${as_default:=$cc}
2950 : ${dep_cc_default:=$cc}
2951 : ${ld_default:=$cc}
2952 : ${host_ld_default:=$host_cc}
2953 set_default ar as dep_cc ld host_ld
2954
2955 probe_cc as "$as"
2956 asflags_filter=$_flags_filter
2957 add_asflags $_flags $_cflags
2958 set_ccvars AS
2959
2960 probe_cc ld "$ld"
2961 ldflags_filter=$_flags_filter
2962 add_ldflags $_flags $_ldflags
2963 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2964 LD_O=${_ld_o-$LD_O}
2965 LD_LIB=${_ld_lib-$LD_LIB}
2966 LD_PATH=${_ld_path-$LD_PATH}
2967
2968 probe_cc hostld "$host_ld"
2969 host_ldflags_filter=$_flags_filter
2970 add_host_ldflags $_flags $_ldflags
2971 HOSTLD_O=${_ld_o-$HOSTLD_O}
2972
2973 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2974     probe_cc depcc "$dep_cc"
2975     CCDEP=${_DEPCMD:-$DEPCMD}
2976     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2977     DEPCCFLAGS=$_flags
2978 fi
2979
2980 if $ar 2>&1 | grep -q Microsoft; then
2981     arflags="-nologo"
2982     ar_o='-out:$@'
2983 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2984     arflags="rq"
2985     ar_o='$@'
2986 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2987     arflags='-Xany -r -c'
2988     ar_o='$@'
2989 else
2990     arflags="rc"
2991     ar_o='$@'
2992 fi
2993
2994 add_cflags $extra_cflags
2995 add_asflags $extra_cflags
2996
2997 if test -n "$sysroot"; then
2998     case "$cc_type" in
2999         gcc|llvm_gcc|clang)
3000             add_cppflags --sysroot="$sysroot"
3001             add_ldflags --sysroot="$sysroot"
3002         ;;
3003         tms470)
3004             add_cppflags -I"$sysinclude"
3005             add_ldflags  --sysroot="$sysroot"
3006         ;;
3007     esac
3008 fi
3009
3010 if test "$cpu" = host; then
3011     enabled cross_compile &&
3012         die "--cpu=host makes no sense when cross-compiling."
3013
3014     case "$cc_type" in
3015         gcc|llvm_gcc)
3016             check_native(){
3017                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3018                 sed -n "/cc1.*$1=/{
3019                             s/.*$1=\\([^ ]*\\).*/\\1/
3020                             p
3021                             q
3022                         }" $TMPE
3023             }
3024             cpu=$(check_native -march || check_native -mcpu)
3025         ;;
3026     esac
3027
3028     test "${cpu:-host}" = host &&
3029         die "--cpu=host not supported with compiler $cc"
3030 fi
3031
3032 # Deal with common $arch aliases
3033 case "$arch" in
3034     aarch64|arm64)
3035         arch="aarch64"
3036     ;;
3037     arm*)
3038         arch="arm"
3039     ;;
3040     mips*|IP*)
3041         arch="mips"
3042     ;;
3043     parisc*|hppa*)
3044         arch="parisc"
3045     ;;
3046     "Power Macintosh"|ppc*|powerpc*)
3047         arch="ppc"
3048     ;;
3049     s390|s390x)
3050         arch="s390"
3051     ;;
3052     sh4|sh)
3053         arch="sh4"
3054     ;;
3055     sun4u|sparc*)
3056         arch="sparc"
3057     ;;
3058     tilegx|tile-gx)
3059         arch="tilegx"
3060     ;;
3061     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3062         arch="x86"
3063     ;;
3064 esac
3065
3066 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3067 enable $arch
3068
3069 # Add processor-specific flags
3070 if enabled aarch64; then
3071
3072     case $cpu in
3073         armv*)
3074             cpuflags="-march=$cpu"
3075         ;;
3076         *)
3077             cpuflags="-mcpu=$cpu"
3078         ;;
3079     esac
3080
3081 elif enabled alpha; then
3082
3083     cpuflags="-mcpu=$cpu"
3084
3085 elif enabled arm; then
3086
3087     check_arm_arch() {
3088         check_cpp_condition stddef.h \
3089             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3090             $cpuflags
3091     }
3092
3093     probe_arm_arch() {
3094         if   check_arm_arch 4;        then echo armv4;
3095         elif check_arm_arch 4T;       then echo armv4t;
3096         elif check_arm_arch 5;        then echo armv5;
3097         elif check_arm_arch 5E;       then echo armv5e;
3098         elif check_arm_arch 5T;       then echo armv5t;
3099         elif check_arm_arch 5TE;      then echo armv5te;
3100         elif check_arm_arch 5TEJ;     then echo armv5te;
3101         elif check_arm_arch 6;        then echo armv6;
3102         elif check_arm_arch 6J;       then echo armv6j;
3103         elif check_arm_arch 6K;       then echo armv6k;
3104         elif check_arm_arch 6Z;       then echo armv6z;
3105         elif check_arm_arch 6ZK;      then echo armv6zk;
3106         elif check_arm_arch 6T2;      then echo armv6t2;
3107         elif check_arm_arch 7;        then echo armv7;
3108         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3109         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3110         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3111         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3112         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3113         fi
3114     }
3115
3116     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3117
3118     case $cpu in
3119         armv*)
3120             cpuflags="-march=$cpu"
3121             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3122         ;;
3123         *)
3124             cpuflags="-mcpu=$cpu"
3125             case $cpu in
3126                 cortex-a*)                               subarch=armv7a  ;;
3127                 cortex-r*)                               subarch=armv7r  ;;
3128                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3129                 arm11*)                                  subarch=armv6   ;;
3130                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3131                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3132                 *)                             subarch=$(probe_arm_arch) ;;
3133             esac
3134         ;;
3135     esac
3136
3137     case "$subarch" in
3138         armv5t*)    enable fast_clz                ;;
3139         armv[6-8]*) enable fast_clz fast_unaligned ;;
3140     esac
3141
3142 elif enabled avr32; then
3143
3144     case $cpu in
3145         ap7[02]0[0-2])
3146             subarch="avr32_ap"
3147             cpuflags="-mpart=$cpu"
3148         ;;
3149         ap)
3150             subarch="avr32_ap"
3151             cpuflags="-march=$cpu"
3152         ;;
3153         uc3[ab]*)
3154             subarch="avr32_uc"
3155             cpuflags="-mcpu=$cpu"
3156         ;;
3157         uc)
3158             subarch="avr32_uc"
3159             cpuflags="-march=$cpu"
3160         ;;
3161     esac
3162
3163 elif enabled bfin; then
3164
3165     cpuflags="-mcpu=$cpu"
3166
3167 elif enabled mips; then
3168
3169     cpuflags="-march=$cpu"
3170
3171 elif enabled ppc; then
3172
3173     disable ldbrx
3174
3175     case $(tolower $cpu) in
3176         601|ppc601|powerpc601)
3177             cpuflags="-mcpu=601"
3178             disable altivec
3179         ;;
3180         603*|ppc603*|powerpc603*)
3181             cpuflags="-mcpu=603"
3182             disable altivec
3183         ;;
3184         604*|ppc604*|powerpc604*)
3185             cpuflags="-mcpu=604"
3186             disable altivec
3187         ;;
3188         g3|75*|ppc75*|powerpc75*)
3189             cpuflags="-mcpu=750"
3190             disable altivec
3191         ;;
3192         g4|745*|ppc745*|powerpc745*)
3193             cpuflags="-mcpu=7450"
3194         ;;
3195         74*|ppc74*|powerpc74*)
3196             cpuflags="-mcpu=7400"
3197         ;;
3198         g5|970|ppc970|powerpc970)
3199             cpuflags="-mcpu=970"
3200         ;;
3201         power[3-7]*)
3202             cpuflags="-mcpu=$cpu"
3203         ;;
3204         cell)
3205             cpuflags="-mcpu=cell"
3206             enable ldbrx
3207         ;;
3208         e500mc)
3209             cpuflags="-mcpu=e500mc"
3210             disable altivec
3211         ;;
3212         e500v2)
3213             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3214             disable altivec
3215             disable dcbzl
3216         ;;
3217         e500)
3218             cpuflags="-mcpu=8540 -mhard-float"
3219             disable altivec
3220             disable dcbzl
3221         ;;
3222     esac
3223
3224 elif enabled sparc; then
3225
3226     case $cpu in
3227         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3228             cpuflags="-mcpu=$cpu"
3229         ;;
3230         ultrasparc*|niagara[234])
3231             cpuflags="-mcpu=$cpu"
3232         ;;
3233     esac
3234
3235 elif enabled x86; then
3236
3237     case $cpu in
3238         i[345]86|pentium)
3239             cpuflags="-march=$cpu"
3240             disable mmx
3241         ;;
3242         # targets that do NOT support nopl and conditional mov (cmov)
3243         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3244             cpuflags="-march=$cpu"
3245             disable i686
3246         ;;
3247         # targets that do support nopl and conditional mov (cmov)
3248         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3249             cpuflags="-march=$cpu"
3250             enable i686
3251             enable fast_cmov
3252         ;;
3253         # targets that do support conditional mov but on which it's slow
3254         pentium4|pentium4m|prescott|nocona)
3255             cpuflags="-march=$cpu"
3256             enable i686
3257             disable fast_cmov
3258         ;;
3259     esac
3260
3261 fi
3262
3263 if [ "$cpu" != generic ]; then
3264     add_cflags  $cpuflags
3265     add_asflags $cpuflags
3266 fi
3267
3268 # compiler sanity check
3269 check_exec <<EOF
3270 int main(void){ return 0; }
3271 EOF
3272 if test "$?" != 0; then
3273     echo "$cc is unable to create an executable file."
3274     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3275         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3276         echo "Only do this if you know what cross compiling means."
3277     fi
3278     die "C compiler test failed."
3279 fi
3280
3281 add_cppflags -D_ISOC99_SOURCE
3282 check_cflags -std=c99
3283 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3284 #include <stdlib.h>
3285 EOF
3286 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3287 #include <stdlib.h>
3288 EOF
3289
3290 add_host_cppflags -D_ISOC99_SOURCE
3291 check_host_cflags -std=c99
3292 check_host_cflags -Wall
3293 check_host_cflags -O3
3294
3295 check_64bit(){
3296     arch32=$1
3297     arch64=$2
3298     expr=$3
3299     check_code cc "" "int test[2*($expr) - 1]" &&
3300         subarch=$arch64 || subarch=$arch32
3301 }
3302
3303 case "$arch" in
3304     aarch64|alpha|ia64)
3305         spic=$shared
3306     ;;
3307     mips)
3308         check_64bit mips mips64 '_MIPS_SIM > 1'
3309         spic=$shared
3310     ;;
3311     parisc)
3312         check_64bit parisc parisc64 'sizeof(void *) > 4'
3313         spic=$shared
3314     ;;
3315     ppc)
3316         check_64bit ppc ppc64 'sizeof(void *) > 4'
3317         spic=$shared
3318     ;;
3319     s390)
3320         check_64bit s390 s390x 'sizeof(void *) > 4'
3321         spic=$shared
3322     ;;
3323     sparc)
3324         check_64bit sparc sparc64 'sizeof(void *) > 4'
3325         spic=$shared
3326     ;;
3327     x86)
3328         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3329         if test "$subarch" = "x86_64"; then
3330             spic=$shared
3331         fi
3332     ;;
3333 esac
3334
3335 enable $subarch
3336 enabled spic && enable_weak pic
3337
3338 # OS specific
3339 case $target_os in
3340     aix)
3341         SHFLAGS=-shared
3342         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3343         enabled shared && add_ldflags -Wl,-brtl
3344         ;;
3345     android)
3346         disable symver
3347         SLIB_INSTALL_NAME='$(SLIBNAME)'
3348         SLIB_INSTALL_LINKS=
3349         # soname not set on purpose
3350         SHFLAGS=-shared
3351         ;;
3352     haiku)
3353         prefix_default="/boot/common"
3354         network_extralibs="-lnetwork"
3355         host_libs=
3356         ;;
3357     sunos)
3358         SHFLAGS='-shared -Wl,-h,$$(@F)'
3359         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3360         network_extralibs="-lsocket -lnsl"
3361         # When using suncc to build, the Solaris linker will mark
3362         # an executable with each instruction set encountered by
3363         # the Solaris assembler.  As our libraries contain their own
3364         # guards for processor-specific code, instead suppress
3365         # generation of the HWCAPS ELF section on Solaris x86 only.
3366         enabled_all suncc x86 &&
3367             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3368             add_ldflags -Wl,-M,mapfile
3369         nm_default='nm -P -g'
3370         ;;
3371     netbsd)
3372         disable symver
3373         oss_indev_extralibs="-lossaudio"
3374         oss_outdev_extralibs="-lossaudio"
3375         ;;
3376     openbsd|bitrig)
3377         disable symver
3378         SHFLAGS='-shared'
3379         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3380         SLIB_INSTALL_LINKS=
3381         oss_indev_extralibs="-lossaudio"
3382         oss_outdev_extralibs="-lossaudio"
3383         ;;
3384     dragonfly)
3385         disable symver
3386         ;;
3387     freebsd)
3388         ;;
3389     bsd/os)
3390         add_extralibs -lpoll -lgnugetopt
3391         ;;
3392     darwin)
3393         gas="gas-preprocessor.pl $cc"
3394         enabled ppc && add_asflags -force_cpusubtype_ALL
3395         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3396         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3397         add_ldflags -Wl,-dynamic,-search_paths_first
3398         SLIBSUF=".dylib"
3399         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3400         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3401         objformat="macho"
3402         enabled x86_64 && objformat="macho64"
3403         enabled_any pic shared ||
3404             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3405         ;;
3406     mingw32*)
3407         if test $target_os = "mingw32ce"; then
3408             disable network
3409         else
3410             target_os=mingw32
3411         fi
3412         LIBTARGET=i386
3413         if enabled x86_64; then
3414             LIBTARGET="i386:x86-64"
3415         elif enabled arm; then
3416             LIBTARGET=arm-wince
3417         fi
3418         check_ldflags -Wl,--nxcompat
3419         check_ldflags -Wl,--dynamicbase
3420         shlibdir_default="$bindir_default"
3421         SLIBPREF=""
3422         SLIBSUF=".dll"
3423         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3424         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3425         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3426         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3427         SLIB_INSTALL_LINKS=
3428         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3429         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3430         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3431         objformat="win32"
3432         dlltool="${cross_prefix}dlltool"
3433         ranlib=:
3434         enable dos_paths
3435         ;;
3436     win32|win64)
3437         disable symver
3438         if enabled shared; then
3439             # Link to the import library instead of the normal static library
3440             # for shared libs.
3441             LD_LIB='%.lib'
3442             # Cannot build both shared and static libs with MSVC or icl.
3443             disable static
3444         fi
3445         shlibdir_default="$bindir_default"
3446         SLIBPREF=""
3447         SLIBSUF=".dll"
3448         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3449         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3450         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3451         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3452         SLIB_INSTALL_LINKS=
3453         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3454         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3455         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3456         objformat="win32"
3457         ranlib=:
3458         enable dos_paths
3459         ;;
3460     cygwin*)
3461         target_os=cygwin
3462         shlibdir_default="$bindir_default"
3463         SLIBPREF="cyg"
3464         SLIBSUF=".dll"
3465         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3466         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3467         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3468         SLIB_INSTALL_LINKS=
3469         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3470         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3471         objformat="win32"
3472         enable dos_paths
3473         ;;
3474     *-dos|freedos|opendos)
3475         network_extralibs="-lsocket"
3476         objformat="coff"
3477         enable dos_paths
3478         add_cppflags -U__STRICT_ANSI__
3479         ;;
3480     linux)
3481         enable dv1394
3482         ;;
3483     irix*)
3484         target_os=irix
3485         ranlib="echo ignoring ranlib"
3486         ;;
3487     os/2*)
3488         ln_s="cp -f"
3489         objformat="aout"
3490         add_cppflags -D_GNU_SOURCE
3491         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3492         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3493         LIBSUF="_s.a"
3494         SLIBPREF=""
3495         SLIBSUF=".dll"
3496         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3497         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3498         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3499             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3500             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3501             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3502             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3503             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3504         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3505             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3506         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3507         enable dos_paths
3508         ;;
3509     gnu/kfreebsd)
3510         add_cppflags -D_BSD_SOURCE
3511         ;;
3512     gnu)
3513         ;;
3514     qnx)
3515         add_cppflags -D_QNX_SOURCE
3516         network_extralibs="-lsocket"
3517         ;;
3518     symbian)
3519         SLIBSUF=".dll"
3520         enable dos_paths
3521         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3522         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3523         add_ldflags -Wl,--target1-abs,--no-undefined \
3524                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3525                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3526         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3527                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3528                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3529         ;;
3530     osf1)
3531         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3532         ;;
3533     minix)
3534         ;;
3535     plan9)
3536         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3537                      -D_REENTRANT_SOURCE        \
3538                      -D_RESEARCH_SOURCE         \
3539                      -DFD_SETSIZE=96            \
3540                      -DHAVE_SOCK_OPTS
3541         add_compat strtod.o strtod=avpriv_strtod
3542         network_extralibs='-lbsd'
3543         exeobjs=compat/plan9/main.o
3544         cp_f='cp'
3545         ;;
3546     none)
3547         ;;
3548     *)
3549         die "Unknown OS '$target_os'."
3550         ;;
3551 esac
3552
3553 # determine libc flavour
3554
3555 probe_libc(){
3556     pfx=$1
3557     pfx_no_=${pfx%_}
3558     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3559     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3560         eval ${pfx}libc_type=uclibc
3561         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3562     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3563         eval ${pfx}libc_type=glibc
3564         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3565     # MinGW headers can be installed on Cygwin, so check for newlib first.
3566     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3567         eval ${pfx}libc_type=newlib
3568         add_${pfx}cppflags -U__STRICT_ANSI__
3569     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3570     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3571         eval ${pfx}libc_type=mingw64
3572         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3573         eval test \$${pfx_no_}cc_type = "gcc" &&
3574             add_${pfx}cppflags -D__printf__=__gnu_printf__
3575     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3576          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3577         eval ${pfx}libc_type=mingw32
3578         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3579             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3580             die "ERROR: MinGW32 runtime version must be >= 3.15."
3581         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3582         eval test \$${pfx_no_}cc_type = "gcc" &&
3583             add_${pfx}cppflags -D__printf__=__gnu_printf__
3584     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3585         eval ${pfx}libc_type=msvcrt
3586         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3587         # 0x601 by default unless something else is set by the user.
3588         # This can easily lead to us detecting functions only present
3589         # in such new versions and producing binaries requiring windows 7.0.
3590         # Therefore explicitly set the default to XP unless the user has
3591         # set something else on the command line.
3592         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3593             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3594     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3595         eval ${pfx}libc_type=klibc
3596     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3597         eval ${pfx}libc_type=bionic
3598     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3599         eval ${pfx}libc_type=solaris
3600         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3601     fi
3602 }
3603
3604 probe_libc
3605 test -n "$libc_type" && enable libc_$libc_type
3606 probe_libc host_
3607 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3608
3609 case $libc_type in
3610     bionic)
3611         add_compat strtod.o strtod=avpriv_strtod
3612         ;;
3613     msvcrt)
3614         add_compat strtod.o strtod=avpriv_strtod
3615         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3616                                      _snprintf=avpriv_snprintf  \
3617                                      vsnprintf=avpriv_vsnprintf
3618         ;;
3619 esac
3620
3621 # hacks for compiler/libc/os combinations
3622
3623 if enabled_all tms470 libc_glibc; then
3624     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3625     add_cppflags -D__USER_LABEL_PREFIX__=
3626     add_cppflags -D__builtin_memset=memset
3627     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3628     add_cflags   -pds=48    # incompatible redefinition of macro
3629 fi
3630
3631 if enabled_all ccc libc_glibc; then
3632     add_ldflags -Wl,-z,now  # calls to libots crash without this
3633 fi
3634
3635 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3636     add_cppflags '-I\$(SRC_PATH)/compat/float'
3637
3638 esc(){
3639     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3640 }
3641
3642 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3643
3644 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3645
3646 set_default $PATHS_LIST
3647 set_default nm
3648
3649 # we need to build at least one lib type
3650 if ! enabled_any static shared; then
3651     cat <<EOF
3652 At least one library type must be built.
3653 Specify --enable-static to build the static libraries or --enable-shared to
3654 build the shared libraries as well. To only build the shared libraries specify
3655 --disable-static in addition to --enable-shared.
3656 EOF
3657     exit 1;
3658 fi
3659
3660 die_license_disabled() {
3661     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3662 }
3663
3664 die_license_disabled gpl libcdio
3665 die_license_disabled gpl libx264
3666 die_license_disabled gpl libx265
3667 die_license_disabled gpl libxavs
3668 die_license_disabled gpl libxvid
3669 die_license_disabled gpl x11grab
3670
3671 die_license_disabled nonfree libfaac
3672 die_license_disabled nonfree libfdk_aac
3673 die_license_disabled nonfree openssl
3674
3675 die_license_disabled version3 libopencore_amrnb
3676 die_license_disabled version3 libopencore_amrwb
3677 die_license_disabled version3 libvo_aacenc
3678 die_license_disabled version3 libvo_amrwbenc
3679
3680 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3681
3682 disabled optimizations || check_cflags -fomit-frame-pointer
3683
3684 enable_weak_pic() {
3685     disabled pic && return
3686     enable pic
3687     add_cppflags -DPIC
3688     case "$target_os" in
3689     mingw*|cygwin*)
3690         ;;
3691     *)
3692         add_cflags -fPIC
3693         ;;
3694     esac
3695     add_asflags  -fPIC
3696 }
3697
3698 enabled pic && enable_weak_pic
3699
3700 check_cc <<EOF || die "Symbol mangling check failed."
3701 int ff_extern;
3702 EOF
3703 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3704 extern_prefix=${sym%%ff_extern*}
3705
3706 check_cc <<EOF && enable_weak inline_asm
3707 void foo(void) { __asm__ volatile ("" ::); }
3708 EOF
3709
3710 _restrict=
3711 for restrict_keyword in restrict __restrict__ __restrict; do
3712     check_cc <<EOF && _restrict=$restrict_keyword && break
3713 void foo(char * $restrict_keyword p);
3714 EOF
3715 done
3716
3717 check_cc <<EOF && enable pragma_deprecated
3718 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3719 EOF
3720
3721 check_cc <<EOF && enable attribute_packed
3722 struct { int x; } __attribute__((packed)) x;
3723 EOF
3724
3725 check_cc <<EOF && enable attribute_may_alias
3726 union { int x; } __attribute__((may_alias)) x;
3727 EOF
3728
3729 check_cc <<EOF || die "endian test failed"
3730 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3731 EOF
3732 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3733
3734
3735 if enabled asm; then
3736     enabled     arm         && nogas=die
3737     enabled_all ppc altivec && nogas=warn
3738     as=${gas:=$as}
3739     check_as <<EOF && enable gnu_as || \
3740         $nogas "GNU assembler not found, install gas-preprocessor"
3741 .macro m n
3742 \n: .int 0
3743 .endm
3744 m x
3745 EOF
3746
3747     check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
3748 .altmacro
3749 EOF
3750
3751     check_as <<EOF && enable as_func
3752 .func test
3753 .endfunc
3754 EOF
3755 fi
3756
3757 check_inline_asm inline_asm_labels '"1:\n"'
3758
3759 if enabled aarch64; then
3760     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3761     # internal assembler in clang 3.3 does not support this instruction
3762     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3763     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3764
3765     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3766
3767 elif enabled alpha; then
3768
3769     check_cflags -mieee
3770
3771 elif enabled arm; then
3772
3773     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3774     enabled thumb && check_cflags -mthumb || check_cflags -marm
3775
3776     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3777         enable vfp_args
3778     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3779         case "${cross_prefix:-$cc}" in
3780             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3781             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3782 __asm__ (".eabi_attribute 28, 1");
3783 int main(void) { return 0; }
3784 EOF
3785         esac
3786         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3787     fi
3788
3789     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3790     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3791     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3792     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3793     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3794     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3795
3796     [ $target_os = linux ] ||
3797         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3798             $ARCH_EXT_LIST_ARM
3799
3800     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3801
3802     check_as <<EOF && enable as_dn_directive
3803 ra .dn d0.i16
3804 .unreq ra
3805 EOF
3806
3807     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3808
3809 elif enabled mips; then
3810
3811     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3812
3813 elif enabled parisc; then
3814
3815     if enabled gcc; then
3816         case $($cc -dumpversion) in
3817             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3818         esac
3819     fi
3820
3821 elif enabled ppc; then
3822
3823     enable local_aligned_8 local_aligned_16
3824
3825     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3826     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3827     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3828     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3829
3830     # AltiVec flags: The FSF version of GCC differs from the Apple version
3831     if enabled altivec; then
3832         check_cflags -maltivec -mabi=altivec &&
3833         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3834         check_cflags -faltivec
3835
3836         # check if our compiler supports Motorola AltiVec C API
3837         check_cc <<EOF || disable altivec
3838 $inc_altivec_h
3839 int main(void) {
3840     vector signed int v1 = (vector signed int) { 0 };
3841     vector signed int v2 = (vector signed int) { 1 };
3842     v1 = vec_add(v1, v2);
3843     return 0;
3844 }
3845 EOF
3846
3847         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3848     fi
3849
3850 elif enabled x86; then
3851
3852     check_builtin rdtsc    intrin.h   "__rdtsc()"
3853     check_builtin mm_empty mmintrin.h "_mm_empty()"
3854
3855     enable local_aligned_8 local_aligned_16
3856
3857     # check whether EBP is available on x86
3858     # As 'i' is stored on the stack, this program will crash
3859     # if the base pointer is used to access it because the
3860     # base pointer is cleared in the inline assembly code.
3861     check_exec_crash <<EOF && enable ebp_available
3862 volatile int i=0;
3863 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3864 return i;
3865 EOF
3866
3867     # check whether EBX is available on x86
3868     check_inline_asm ebx_available '""::"b"(0)' &&
3869         check_inline_asm ebx_available '"":::"%ebx"'
3870
3871     # check whether xmm clobbers are supported
3872     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3873
3874     # check whether binutils is new enough to compile SSSE3/MMXEXT
3875     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3876     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3877
3878     if ! disabled_any asm mmx yasm; then
3879         if check_cmd $yasmexe --version; then
3880             enabled x86_64 && yasm_extra="-m amd64"
3881             yasm_debug="-g dwarf2"
3882         elif check_cmd nasm -v; then
3883             yasmexe=nasm
3884             yasm_debug="-g -F dwarf"
3885             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3886         fi
3887
3888         YASMFLAGS="-f $objformat $yasm_extra"
3889         enabled pic               && append YASMFLAGS "-DPIC"
3890         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3891         case "$objformat" in
3892             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3893         esac
3894
3895         check_yasm "movbe ecx, [5]" && enable yasm ||
3896             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3897         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3898         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3899         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3900         check_yasm "CPU amdnop" || disable cpunop
3901     fi
3902
3903     case "$cpu" in
3904         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3905             disable fast_clz
3906         ;;
3907     esac
3908
3909 fi
3910
3911 check_ldflags -Wl,--as-needed
3912
3913 if check_func dlopen; then
3914     ldl=
3915 elif check_func dlopen -ldl; then
3916     ldl=-ldl
3917 fi
3918
3919 if ! disabled network; then
3920     check_func getaddrinfo $network_extralibs
3921     check_func getservbyport $network_extralibs
3922     check_func inet_aton $network_extralibs
3923
3924     check_type netdb.h "struct addrinfo"
3925     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3926     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3927     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3928     check_type poll.h "struct pollfd"
3929     check_type netinet/sctp.h "struct sctp_event_subscribe"
3930     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3931     check_type netinet/in.h "struct sockaddr_in6"
3932     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3933     check_type "sys/types.h sys/socket.h" socklen_t
3934
3935     # Prefer arpa/inet.h over winsock2
3936     if check_header arpa/inet.h ; then
3937         check_func closesocket
3938     elif check_header winsock2.h ; then
3939         check_func_headers winsock2.h closesocket -lws2 &&
3940             network_extralibs="-lws2" ||
3941         { check_func_headers winsock2.h closesocket -lws2_32 &&
3942             network_extralibs="-lws2_32"; } || disable winsock2_h network
3943         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3944
3945         check_type ws2tcpip.h socklen_t
3946         check_type ws2tcpip.h "struct addrinfo"
3947         check_type ws2tcpip.h "struct group_source_req"
3948         check_type ws2tcpip.h "struct ip_mreq_source"
3949         check_type ws2tcpip.h "struct ipv6_mreq"
3950         check_type winsock2.h "struct pollfd"
3951         check_struct winsock2.h "struct sockaddr" sa_len
3952         check_type ws2tcpip.h "struct sockaddr_in6"
3953         check_type ws2tcpip.h "struct sockaddr_storage"
3954     else
3955         disable network
3956     fi
3957 fi
3958
3959 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3960 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3961 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3962 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3963
3964 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3965 check_func  ${malloc_prefix}memalign            && enable memalign
3966 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3967
3968 check_func  fcntl
3969 check_func  fork
3970 check_func  gethrtime
3971 check_func  getopt
3972 check_func  getrusage
3973 check_func  gettimeofday
3974 check_func  isatty
3975 check_func  localtime_r
3976 check_func  mach_absolute_time
3977 check_func  mkstemp
3978 check_func  mmap
3979 check_func  mprotect
3980 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3981 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3982 check_func  sched_getaffinity
3983 check_func  setrlimit
3984 check_func  strerror_r
3985 check_func  strptime
3986 check_func  sysconf
3987 check_func  sysctl
3988 check_func  usleep
3989
3990 check_func_headers io.h setmode
3991 check_func_headers stdlib.h getenv
3992
3993 check_func_headers windows.h CoTaskMemFree -lole32
3994 check_func_headers windows.h GetProcessAffinityMask
3995 check_func_headers windows.h GetProcessTimes
3996 check_func_headers windows.h GetSystemTimeAsFileTime
3997 check_func_headers windows.h MapViewOfFile
3998 check_func_headers windows.h SetConsoleTextAttribute
3999 check_func_headers windows.h Sleep
4000 check_func_headers windows.h VirtualAlloc
4001
4002 check_header direct.h
4003 check_header dlfcn.h
4004 check_header dxva.h
4005 check_header dxva2api.h
4006 check_header io.h
4007 check_header mach/mach_time.h
4008 check_header malloc.h
4009 check_header poll.h
4010 check_header sys/mman.h
4011 check_header sys/param.h
4012 check_header sys/resource.h
4013 check_header sys/select.h
4014 check_header sys/time.h
4015 check_header sys/un.h
4016 check_header unistd.h
4017 check_header vdpau/vdpau.h
4018 check_header vdpau/vdpau_x11.h
4019 check_header VideoDecodeAcceleration/VDADecoder.h
4020 check_header windows.h
4021 check_header X11/extensions/XvMClib.h
4022
4023 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4024 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4025 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4026
4027 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4028
4029 if ! disabled w32threads && ! enabled pthreads; then
4030     check_func_headers "windows.h process.h" _beginthreadex &&
4031         enable w32threads || disable w32threads
4032 fi
4033
4034 # check for some common methods of building with pthread support
4035 # do this before the optional library checks as some of them require pthreads
4036 if ! disabled pthreads && ! enabled w32threads; then
4037     enable pthreads
4038     if check_func pthread_join -pthread; then
4039         add_cflags -pthread
4040         add_extralibs -pthread
4041     elif check_func pthread_join -pthreads; then
4042         add_cflags -pthreads
4043         add_extralibs -pthreads
4044     elif check_func pthread_join -lpthreadGC2; then
4045         add_extralibs -lpthreadGC2
4046     elif check_lib pthread.h pthread_join -lpthread; then
4047         :
4048     elif ! check_func pthread_join; then
4049         disable pthreads
4050     fi
4051 fi
4052
4053 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4054 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4055
4056 check_lib math.h sin -lm && LIBM="-lm"
4057 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4058
4059 atan2f_args=2
4060 ldexpf_args=2
4061 powf_args=2
4062
4063 for func in $MATH_FUNCS; do
4064     eval check_mathfunc $func \${${func}_args:-1}
4065 done
4066
4067 # these are off by default, so fail if requested and not available
4068 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4069                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4070                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4071 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4072 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4073 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4074 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4075 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4076 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4077 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4078 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4079                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4080                                done || die "ERROR: libgsm not found"; }
4081 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4082 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4083 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4084 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4085 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4086 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4087                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4088 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4089 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4090 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4091 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4092 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4093 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4094 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4095 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4096 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4097 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4098 enabled libvpx            && {
4099     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4100                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4101     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4102                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4103     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4104     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4105 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4106 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4107 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4108                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4109                                die "ERROR: libx264 version must be >= 0.118."; }
4110 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4111                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4112                                die "ERROR: libx265 version must be >= 17."; }
4113 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4114 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4115 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4116                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4117                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4118                                die "ERROR: openssl not found"; }
4119
4120 if enabled gnutls; then
4121     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4122     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4123 fi
4124
4125 # libdc1394 check
4126 if enabled libdc1394; then
4127     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4128         enable libdc1394_2; } ||
4129     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4130         enable libdc1394_1; } ||
4131     die "ERROR: No version of libdc1394 found "
4132 fi
4133
4134 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4135     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4136     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4137     enable sdl
4138 fi
4139
4140 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4141 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4142
4143 check_header linux/fb.h
4144 check_header linux/videodev2.h
4145 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4146
4147 check_header sys/videoio.h
4148
4149 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4150 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4151 # w32api 3.12 had it defined wrong
4152 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4153
4154 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4155 { check_header dev/bktr/ioctl_meteor.h &&
4156   check_header dev/bktr/ioctl_bt848.h; } ||
4157 { check_header machine/ioctl_meteor.h &&
4158   check_header machine/ioctl_bt848.h; } ||
4159 { check_header dev/video/meteor/ioctl_meteor.h &&
4160   check_header dev/video/bktr/ioctl_bt848.h; } ||
4161 check_header dev/ic/bt8xx.h
4162
4163 check_header sndio.h
4164 check_header sys/soundcard.h
4165 check_header soundcard.h
4166
4167 enabled_any alsa_indev alsa_outdev &&
4168     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4169
4170 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4171     check_func jack_port_get_latency_range -ljack
4172
4173 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4174
4175 if enabled libcdio; then
4176     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4177     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4178 fi
4179
4180 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4181
4182 enabled x11grab                                           &&
4183 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4184 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4185 { enabled xlib || die "ERROR: Xlib not found"; }
4186
4187 enabled vdpau &&
4188     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4189     disable vdpau
4190
4191 enabled vdpau && enabled xlib &&
4192     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4193     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4194     enable vdpau_x11
4195
4196 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4197
4198 # add some useful compiler flags if supported
4199 check_cflags -Wdeclaration-after-statement
4200 check_cflags -Wall
4201 check_cflags -Wdisabled-optimization
4202 check_cflags -Wpointer-arith
4203 check_cflags -Wredundant-decls
4204 check_cflags -Wcast-qual
4205 check_cflags -Wwrite-strings
4206 check_cflags -Wtype-limits
4207 check_cflags -Wundef
4208 check_cflags -Wmissing-prototypes
4209 check_cflags -Wstrict-prototypes
4210 enabled extra_warnings && check_cflags -Winline
4211
4212 check_disable_warning(){
4213     warning_flag=-W${1#-Wno-}
4214     test_cflags $warning_flag && add_cflags $1
4215 }
4216
4217 check_disable_warning -Wno-parentheses
4218 check_disable_warning -Wno-switch
4219 check_disable_warning -Wno-format-zero-length
4220 check_disable_warning -Wno-pointer-sign
4221
4222 # add some linker flags
4223 check_ldflags -Wl,--warn-common
4224 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4225 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4226
4227 # add some strip flags
4228 # -wN '..@*' is more selective than -x, but not available everywhere.
4229 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4230
4231 enabled neon_clobber_test &&
4232     check_ldflags -Wl,--wrap,avcodec_open2              \
4233                   -Wl,--wrap,avcodec_decode_audio4      \
4234                   -Wl,--wrap,avcodec_decode_video2      \
4235                   -Wl,--wrap,avcodec_decode_subtitle2   \
4236                   -Wl,--wrap,avcodec_encode_audio2      \
4237                   -Wl,--wrap,avcodec_encode_video2      \
4238                   -Wl,--wrap,avcodec_encode_subtitle    \
4239                   -Wl,--wrap,avresample_convert ||
4240     disable neon_clobber_test
4241
4242 enabled xmm_clobber_test &&
4243     check_ldflags -Wl,--wrap,avcodec_open2              \
4244                   -Wl,--wrap,avcodec_decode_audio4      \
4245                   -Wl,--wrap,avcodec_decode_video2      \
4246                   -Wl,--wrap,avcodec_decode_subtitle2   \
4247                   -Wl,--wrap,avcodec_encode_audio2      \
4248                   -Wl,--wrap,avcodec_encode_video2      \
4249                   -Wl,--wrap,avcodec_encode_subtitle    \
4250                   -Wl,--wrap,avresample_convert         \
4251                   -Wl,--wrap,sws_scale ||
4252     disable xmm_clobber_test
4253
4254 echo "X{};" > $TMPV
4255 if test_ldflags -Wl,--version-script,$TMPV; then
4256     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4257     check_cc <<EOF && enable symver_asm_label
4258 void ff_foo(void) __asm__ ("av_foo@VERSION");
4259 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4260 EOF
4261     check_cc <<EOF && enable symver_gnu_asm
4262 __asm__(".symver ff_foo,av_foo@VERSION");
4263 void ff_foo(void) {}
4264 EOF
4265 fi
4266
4267 if [ -z "$optflags" ]; then
4268     if enabled small; then
4269         optflags=$cflags_size
4270     elif enabled optimizations; then
4271         optflags=$cflags_speed
4272     else
4273         optflags=$cflags_noopt
4274     fi
4275 fi
4276
4277 check_optflags(){
4278     check_cflags "$@"
4279     enabled lto && check_ldflags "$@"
4280 }
4281
4282
4283 if enabled lto; then
4284     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4285     check_cflags  -flto
4286     check_ldflags -flto $cpuflags
4287 fi
4288
4289 check_optflags $optflags
4290 check_optflags -fno-math-errno
4291 check_optflags -fno-signed-zeros
4292
4293 if enabled icc; then
4294     # Just warnings, no remarks
4295     check_cflags -w1
4296     # -wd: Disable following warnings
4297     # 144, 167, 556: -Wno-pointer-sign
4298     # 1292: attribute "foo" ignored
4299     # 1419: external declaration in primary source file
4300     # 10006: ignoring unknown option -fno-signed-zeros
4301     # 10148: ignoring unknown option -Wno-parentheses
4302     # 10156: ignoring option '-W'; no argument required
4303     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4304     # 11030: Warning unknown option --as-needed
4305     # 10156: ignoring option '-export'; no argument required
4306     check_ldflags -wd10156,11030
4307     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4308     enable ebp_available
4309     if enabled x86_32; then
4310         icc_version=$($cc -dumpversion)
4311         test ${icc_version%%.*} -ge 11 &&
4312             check_cflags -falign-stack=maintain-16-byte ||
4313             disable aligned_stack
4314     fi
4315 elif enabled ccc; then
4316     # disable some annoying warnings
4317     add_cflags -msg_disable bitnotint
4318     add_cflags -msg_disable mixfuncvoid
4319     add_cflags -msg_disable nonstandcast
4320     add_cflags -msg_disable unsupieee
4321 elif enabled gcc; then
4322     check_optflags -fno-tree-vectorize
4323     check_cflags -Werror=implicit-function-declaration
4324     check_cflags -Werror=missing-prototypes
4325     check_cflags -Werror=return-type
4326     check_cflags -Werror=declaration-after-statement
4327     check_cflags -Werror=vla
4328     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4329 elif enabled llvm_gcc; then
4330     check_cflags -mllvm -stack-alignment=16
4331 elif enabled clang; then
4332     check_cflags -mllvm -stack-alignment=16
4333     check_cflags -Qunused-arguments
4334     check_cflags -Werror=implicit-function-declaration
4335     check_cflags -Werror=missing-prototypes
4336     check_cflags -Werror=return-type
4337 elif enabled cparser; then
4338     add_cflags -Wno-missing-variable-declarations
4339     add_cflags -Wno-empty-statement
4340 elif enabled armcc; then
4341     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4342     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4343     # 2523: use of inline assembler is deprecated
4344     add_cflags -W${armcc_opt},--diag_suppress=2523
4345     add_cflags -W${armcc_opt},--diag_suppress=1207
4346     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4347     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4348     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4349     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4350 elif enabled tms470; then
4351     add_cflags -pds=824 -pds=837
4352     disable inline_asm
4353 elif enabled pathscale; then
4354     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4355 elif enabled_any msvc icl; then
4356     enabled x86_32 && disable aligned_stack
4357     enabled_all x86_32 debug && add_cflags -Oy-
4358     enabled debug && add_ldflags -debug
4359     enable pragma_deprecated
4360     if enabled icl; then
4361         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4362         # (correctly) on icl 13.x.
4363         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4364             add_cflags -Qansi-alias
4365         # icl will pass the inline asm tests but inline asm is currently
4366         # not supported (build will fail)
4367         disable inline_asm
4368     fi
4369 fi
4370
4371 case $as_type in
4372     clang)
4373         add_asflags -Qunused-arguments
4374     ;;
4375 esac
4376
4377 case $ld_type in
4378     clang)
4379         check_ldflags -Qunused-arguments
4380     ;;
4381 esac
4382
4383 case $target_os in
4384     osf1)
4385         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4386     ;;
4387     plan9)
4388         add_cppflags -Dmain=plan9_main
4389     ;;
4390 esac
4391
4392 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4393
4394 check_deps $CONFIG_LIST       \
4395            $CONFIG_EXTRA      \
4396            $HAVE_LIST         \
4397            $ALL_COMPONENTS    \
4398
4399 enabled_all dxva2 CoTaskMemFree &&
4400     prepend avconv_libs $($ldflags_filter "-lole32") &&
4401     enable dxva2_lib
4402
4403 ! enabled_any memalign posix_memalign aligned_malloc &&
4404     enabled_any $need_memalign && enable memalign_hack
4405
4406 for thread in $THREADS_LIST; do
4407     if enabled $thread; then
4408         test -n "$thread_type" &&
4409             die "ERROR: Only one thread type must be selected." ||
4410             thread_type="$thread"
4411     fi
4412 done
4413
4414 # conditional library dependencies, in linking order
4415 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4416 enabled resample_filter && prepend avfilter_deps "avresample"
4417 enabled scale_filter    && prepend avfilter_deps "swscale"
4418
4419 enabled opus_decoder    && prepend avcodec_deps "avresample"
4420
4421 expand_deps(){
4422     lib_deps=${1}_deps
4423     eval "deps=\$$lib_deps"
4424     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4425     unique $lib_deps
4426 }
4427
4428 map 'expand_deps $v' $LIBRARY_LIST
4429
4430 echo "install prefix            $prefix"
4431 echo "source path               $source_path"
4432 echo "C compiler                $cc"
4433 echo "C library                 $libc_type"
4434 if test "$host_cc" != "$cc"; then
4435     echo "host C compiler           $host_cc"
4436     echo "host C library            $host_libc_type"
4437 fi
4438 echo "ARCH                      $arch ($cpu)"
4439 if test "$build_suffix" != ""; then
4440     echo "build suffix              $build_suffix"
4441 fi
4442 if test "$extra_version" != ""; then
4443     echo "version string suffix     $extra_version"
4444 fi
4445 echo "big-endian                ${bigendian-no}"
4446 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4447 if enabled x86; then
4448     echo "${yasmexe}                      ${yasm-no}"
4449     echo "MMX enabled               ${mmx-no}"
4450     echo "MMXEXT enabled            ${mmxext-no}"
4451     echo "3DNow! enabled            ${amd3dnow-no}"
4452     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4453     echo "SSE enabled               ${sse-no}"
4454     echo "SSSE3 enabled             ${ssse3-no}"
4455     echo "AVX enabled               ${avx-no}"
4456     echo "XOP enabled               ${xop-no}"
4457     echo "FMA3 enabled              ${fma3-no}"
4458     echo "FMA4 enabled              ${fma4-no}"
4459     echo "i686 features enabled     ${i686-no}"
4460     echo "CMOV is fast              ${fast_cmov-no}"
4461     echo "EBX available             ${ebx_available-no}"
4462     echo "EBP available             ${ebp_available-no}"
4463 fi
4464 if enabled aarch64; then
4465     echo "NEON enabled              ${neon-no}"
4466     echo "VFP enabled               ${vfp-no}"
4467 fi
4468 if enabled arm; then
4469     echo "ARMv5TE enabled           ${armv5te-no}"
4470     echo "ARMv6 enabled             ${armv6-no}"
4471     echo "ARMv6T2 enabled           ${armv6t2-no}"
4472     echo "VFP enabled               ${vfp-no}"
4473     echo "NEON enabled              ${neon-no}"
4474 fi
4475 if enabled ppc; then
4476     echo "AltiVec enabled           ${altivec-no}"
4477     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4478     echo "dcbzl available           ${dcbzl-no}"
4479 fi
4480 echo "debug symbols             ${debug-no}"
4481 echo "optimize for size         ${small-no}"
4482 echo "optimizations             ${optimizations-no}"
4483 echo "static                    ${static-no}"
4484 echo "shared                    ${shared-no}"
4485 echo "new filter support        ${avfilter-no}"
4486 echo "network support           ${network-no}"
4487 echo "threading support         ${thread_type-no}"
4488 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4489 echo "SDL support               ${sdl-no}"
4490 test -n "$random_seed" &&
4491     echo "random seed               ${random_seed}"
4492 echo
4493
4494 echo "External libraries:"
4495 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4496 echo
4497
4498 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4499     echo "Enabled ${type}s:"
4500     eval list=\$$(toupper $type)_LIST
4501     print_enabled '_*' $list | print_3_columns
4502     echo
4503 done
4504
4505 license="LGPL version 2.1 or later"
4506 if enabled nonfree; then
4507     license="nonfree and unredistributable"
4508 elif enabled gplv3; then
4509     license="GPL version 3 or later"
4510 elif enabled lgplv3; then
4511     license="LGPL version 3 or later"
4512 elif enabled gpl; then
4513     license="GPL version 2 or later"
4514 fi
4515
4516 echo "License: $license"
4517
4518 echo "Creating config.mak and config.h..."
4519
4520 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4521
4522 config_files="$TMPH config.mak"
4523
4524 cat > config.mak <<EOF
4525 # Automatically generated by configure - do not modify!
4526 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4527 prefix=$prefix
4528 LIBDIR=\$(DESTDIR)$libdir
4529 SHLIBDIR=\$(DESTDIR)$shlibdir
4530 INCDIR=\$(DESTDIR)$incdir
4531 BINDIR=\$(DESTDIR)$bindir
4532 DATADIR=\$(DESTDIR)$datadir
4533 DOCDIR=\$(DESTDIR)$docdir
4534 MANDIR=\$(DESTDIR)$mandir
4535 SRC_PATH=$source_path
4536 CC_IDENT=$cc_ident
4537 ARCH=$arch
4538 CC=$cc
4539 AS=$as
4540 LD=$ld
4541 DEPCC=$dep_cc
4542 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4543 DEPAS=$as
4544 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4545 YASM=$yasmexe
4546 DEPYASM=$yasmexe
4547 AR=$ar
4548 ARFLAGS=$arflags
4549 AR_O=$ar_o
4550 RANLIB=$ranlib
4551 STRIP=$strip
4552 LN_S=$ln_s
4553 CPPFLAGS=$CPPFLAGS
4554 CFLAGS=$CFLAGS
4555 ASFLAGS=$ASFLAGS
4556 AS_C=$AS_C
4557 AS_O=$AS_O
4558 CC_C=$CC_C
4559 CC_E=$CC_E
4560 CC_O=$CC_O
4561 LD_O=$LD_O
4562 LD_LIB=$LD_LIB
4563 LD_PATH=$LD_PATH
4564 DLLTOOL=$dlltool
4565 LDFLAGS=$LDFLAGS
4566 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4567 STRIPFLAGS=$STRIPFLAGS
4568 YASMFLAGS=$YASMFLAGS
4569 BUILDSUF=$build_suffix
4570 FULLNAME=$FULLNAME
4571 LIBPREF=$LIBPREF
4572 LIBSUF=$LIBSUF
4573 LIBNAME=$LIBNAME
4574 SLIBPREF=$SLIBPREF
4575 SLIBSUF=$SLIBSUF
4576 EXESUF=$EXESUF
4577 EXTRA_VERSION=$extra_version
4578 CCDEP=$CCDEP
4579 CCDEP_FLAGS=$CCDEP_FLAGS
4580 ASDEP=$ASDEP
4581 ASDEP_FLAGS=$ASDEP_FLAGS
4582 CC_DEPFLAGS=$CC_DEPFLAGS
4583 AS_DEPFLAGS=$AS_DEPFLAGS
4584 HOSTCC=$host_cc
4585 HOSTLD=$host_ld
4586 HOSTCFLAGS=$host_cflags
4587 HOSTCPPFLAGS=$host_cppflags
4588 HOSTEXESUF=$HOSTEXESUF
4589 HOSTLDFLAGS=$host_ldflags
4590 HOSTLIBS=$host_libs
4591 DEPHOSTCC=$host_cc
4592 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4593 HOSTCCDEP=$HOSTCCDEP
4594 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4595 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4596 HOSTCC_C=$HOSTCC_C
4597 HOSTCC_O=$HOSTCC_O
4598 HOSTLD_O=$HOSTLD_O
4599 TARGET_EXEC=$target_exec $target_exec_args
4600 TARGET_PATH=$target_path
4601 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4602 CFLAGS-avplay=$sdl_cflags
4603 ZLIB=$($ldflags_filter -lz)
4604 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4605 EXTRALIBS=$extralibs
4606 COMPAT_OBJS=$compat_objs
4607 EXEOBJS=$exeobjs
4608 INSTALL=install
4609 LIBTARGET=${LIBTARGET}
4610 SLIBNAME=${SLIBNAME}
4611 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4612 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4613 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4614 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4615 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4616 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4617 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4618 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4619 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4620 EOF
4621
4622 get_version(){
4623     lcname=lib${1}
4624     name=$(toupper $lcname)
4625     file=$source_path/$lcname/version.h
4626     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4627     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4628     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4629     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4630     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4631 }
4632
4633 map 'get_version $v' $LIBRARY_LIST
4634
4635 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4636
4637 print_program_libs(){
4638     eval "program_libs=\$${1}_libs"
4639     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4640 }
4641
4642 map 'print_program_libs $v' $PROGRAM_LIST
4643
4644 cat > $TMPH <<EOF
4645 /* Automatically generated by configure - do not modify! */
4646 #ifndef LIBAV_CONFIG_H
4647 #define LIBAV_CONFIG_H
4648 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4649 #define LIBAV_LICENSE "$(c_escape $license)"
4650 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4651 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4652 #define restrict $_restrict
4653 #define EXTERN_PREFIX "${extern_prefix}"
4654 #define EXTERN_ASM ${extern_prefix}
4655 #define SLIBSUF "$SLIBSUF"
4656 EOF
4657
4658 test -n "$malloc_prefix" &&
4659     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4660
4661 if enabled yasm; then
4662     append config_files $TMPASM
4663     printf '' >$TMPASM
4664 fi
4665
4666 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4667
4668 print_config ARCH_   "$config_files" $ARCH_LIST
4669 print_config HAVE_   "$config_files" $HAVE_LIST
4670 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4671                                      $CONFIG_EXTRA      \
4672                                      $ALL_COMPONENTS    \
4673
4674 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4675
4676 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4677 cp_if_changed $TMPH config.h
4678 touch .config
4679
4680 enabled yasm && cp_if_changed $TMPASM config.asm
4681
4682 cat > $TMPH <<EOF
4683 /* Generated by ffconf */
4684 #ifndef AVUTIL_AVCONFIG_H
4685 #define AVUTIL_AVCONFIG_H
4686 EOF
4687
4688 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4689
4690 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4691
4692 cp_if_changed $TMPH libavutil/avconfig.h
4693
4694 test -n "$WARNINGS" && printf "\n$WARNINGS"
4695
4696 # build pkg-config files
4697
4698 lib_version(){
4699     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4700 }
4701
4702 pkgconfig_generate(){
4703     name=$1
4704     shortname=${name#lib}${build_suffix}
4705     comment=$2
4706     version=$3
4707     libs=$4
4708     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4709     requires=${requires%, }
4710     enabled ${name#lib} || return 0
4711     mkdir -p $name
4712     cat <<EOF > $name/$name.pc
4713 prefix=$prefix
4714 exec_prefix=\${prefix}
4715 libdir=$libdir
4716 includedir=$incdir
4717
4718 Name: $name
4719 Description: $comment
4720 Version: $version
4721 Requires: $(enabled shared || echo $requires)
4722 Requires.private: $(enabled shared && echo $requires)
4723 Conflicts:
4724 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4725 Libs.private: $(enabled shared && echo $libs)
4726 Cflags: -I\${includedir}
4727 EOF
4728     cat <<EOF > $name/$name-uninstalled.pc
4729 prefix=
4730 exec_prefix=
4731 libdir=\${pcfiledir}
4732 includedir=${source_path}
4733
4734 Name: $name
4735 Description: $comment
4736 Version: $version
4737 Requires: $requires
4738 Conflicts:
4739 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4740 Cflags: -I\${includedir}
4741 EOF
4742 }
4743
4744 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4745 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
4746 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
4747 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
4748 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
4749 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs"
4750 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"