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