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[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       disable avserver build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-avdevice       disable libavdevice build
116   --disable-avcodec        disable libavcodec build
117   --disable-avformat       disable libavformat build
118   --disable-avutil         disable libavutil build
119   --disable-swscale        disable libswscale build
120   --disable-avfilter       disable video filter support [no]
121   --disable-avresample     disable libavresample build [no]
122   --disable-pthreads       disable pthreads [auto]
123   --disable-w32threads     disable Win32 threads [auto]
124   --disable-network        disable network support [no]
125   --disable-dct            disable DCT code
126   --disable-error-resilience disable error resilience code
127   --disable-lsp            disable LSP code
128   --disable-lzo            disable LZO decoder code
129   --disable-mdct           disable MDCT code
130   --disable-rdft           disable RDFT code
131   --disable-fft            disable FFT code
132
133 Hardware accelerators:
134   --enable-dxva2           enable DXVA2 code
135   --enable-vaapi           enable VAAPI code
136   --enable-vda             enable VDA code
137   --enable-vdpau           enable VDPAU code
138
139 Individual component options:
140   --disable-everything     disable all components listed below
141   --disable-encoder=NAME   disable encoder NAME
142   --enable-encoder=NAME    enable encoder NAME
143   --disable-encoders       disable all encoders
144   --disable-decoder=NAME   disable decoder NAME
145   --enable-decoder=NAME    enable decoder NAME
146   --disable-decoders       disable all decoders
147   --disable-hwaccel=NAME   disable hwaccel NAME
148   --enable-hwaccel=NAME    enable hwaccel NAME
149   --disable-hwaccels       disable all hwaccels
150   --disable-muxer=NAME     disable muxer NAME
151   --enable-muxer=NAME      enable muxer NAME
152   --disable-muxers         disable all muxers
153   --disable-demuxer=NAME   disable demuxer NAME
154   --enable-demuxer=NAME    enable demuxer NAME
155   --disable-demuxers       disable all demuxers
156   --enable-parser=NAME     enable parser NAME
157   --disable-parser=NAME    disable parser NAME
158   --disable-parsers        disable all parsers
159   --enable-bsf=NAME        enable bitstream filter NAME
160   --disable-bsf=NAME       disable bitstream filter NAME
161   --disable-bsfs           disable all bitstream filters
162   --enable-protocol=NAME   enable protocol NAME
163   --disable-protocol=NAME  disable protocol NAME
164   --disable-protocols      disable all protocols
165   --enable-indev=NAME      enable input device NAME
166   --disable-indev=NAME     disable input device NAME
167   --disable-indevs         disable input devices
168   --enable-outdev=NAME     enable output device NAME
169   --disable-outdev=NAME    disable output device NAME
170   --disable-outdevs        disable output devices
171   --disable-devices        disable all devices
172   --enable-filter=NAME     enable filter NAME
173   --disable-filter=NAME    disable filter NAME
174   --disable-filters        disable all filters
175
176 External library support:
177   --enable-avisynth        enable reading of AviSynth script files [no]
178   --enable-bzlib           enable bzlib [autodetect]
179   --enable-frei0r          enable frei0r video filtering
180   --enable-gnutls          enable gnutls [no]
181   --enable-libbs2b         enable bs2b DSP library [no]
182   --enable-libcdio         enable audio CD grabbing with libcdio
183   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
184                            and libraw1394 [no]
185   --enable-libfaac         enable AAC encoding via libfaac [no]
186   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
187   --enable-libfreetype     enable libfreetype [no]
188   --enable-libgsm          enable GSM de/encoding via libgsm [no]
189   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
190   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
191   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
192   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
193   --enable-libopencv       enable video filtering via libopencv [no]
194   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
195   --enable-libopus         enable Opus de/encoding via libopus [no]
196   --enable-libpulse        enable Pulseaudio input via libpulse [no]
197   --enable-librtmp         enable RTMP[E] support via librtmp [no]
198   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
199   --enable-libspeex        enable Speex de/encoding via libspeex [no]
200   --enable-libtheora       enable Theora encoding via libtheora [no]
201   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
202   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
203   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
204   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
205   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
206   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
207   --enable-libwebp         enable WebP encoding via libwebp [no]
208   --enable-libx264         enable H.264 encoding via x264 [no]
209   --enable-libx265         enable HEVC encoding via x265 [no]
210   --enable-libxavs         enable AVS encoding via xavs [no]
211   --enable-libxvid         enable Xvid encoding via xvidcore,
212                            native MPEG-4/Xvid encoder exists [no]
213   --enable-openssl         enable openssl [no]
214   --enable-x11grab         enable X11 grabbing [no]
215   --enable-zlib            enable zlib [autodetect]
216
217 Toolchain options:
218   --arch=ARCH              select architecture [$arch]
219   --cpu=CPU                select the minimum required CPU (affects
220                            instruction selection, may crash on older CPUs)
221   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
222   --enable-cross-compile   assume a cross-compiler is used
223   --sysroot=PATH           root of cross-build tree
224   --sysinclude=PATH        location of cross-build system headers
225   --target-os=OS           compiler targets OS [$target_os]
226   --target-exec=CMD        command to run executables on target
227   --target-path=DIR        path to view of build directory on target
228   --target-samples=DIR     path to samples directory on target
229   --toolchain=NAME         set tool defaults according to NAME
230   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
231   --nm=NM                  use nm tool
232   --ar=AR                  use archive tool AR [$ar_default]
233   --as=AS                  use assembler AS [$as_default]
234   --cc=CC                  use C compiler CC [$cc_default]
235   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
236   --ld=LD                  use linker LD
237   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
238   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
239   --host-cc=HOSTCC         use host C compiler HOSTCC
240   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
241   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
242   --host-ld=HOSTLD         use host linker HOSTLD
243   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
244   --host-libs=HLIBS        use libs HLIBS when linking for host
245   --host-os=OS             compiler host OS [$target_os]
246   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
247   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
248   --extra-libs=ELIBS       add ELIBS [$ELIBS]
249   --extra-version=STRING   version string suffix []
250   --optflags=OPTFLAGS      override optimization-related compiler flags
251   --build-suffix=SUFFIX    library name suffix []
252   --enable-pic             build position-independent code
253   --enable-thumb           compile for Thumb instruction set
254   --enable-lto             use link-time optimization
255
256 Advanced options (experts only):
257   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
258   --disable-symver         disable symbol versioning
259   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
260   --disable-safe-bitstream-reader
261                            disable buffer boundary checking in bitreaders
262                            (faster, but may crash)
263   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
264   --enable-sram            allow use of on-chip SRAM
265
266 Optimization options (experts only):
267   --disable-asm            disable all assembler optimizations
268   --disable-altivec        disable AltiVec optimizations
269   --disable-amd3dnow       disable 3DNow! optimizations
270   --disable-amd3dnowext    disable 3DNow! extended optimizations
271   --disable-mmx            disable MMX optimizations
272   --disable-mmxext         disable MMXEXT optimizations
273   --disable-sse            disable SSE optimizations
274   --disable-sse2           disable SSE2 optimizations
275   --disable-sse3           disable SSE3 optimizations
276   --disable-ssse3          disable SSSE3 optimizations
277   --disable-sse4           disable SSE4 optimizations
278   --disable-sse42          disable SSE4.2 optimizations
279   --disable-avx            disable AVX optimizations
280   --disable-xop            disable XOP optimizations
281   --disable-fma3           disable FMA3 optimizations
282   --disable-fma4           disable FMA4 optimizations
283   --disable-avx2           disable AVX2 optimizations
284   --disable-armv5te        disable armv5te optimizations
285   --disable-armv6          disable armv6 optimizations
286   --disable-armv6t2        disable armv6t2 optimizations
287   --disable-vfp            disable VFP optimizations
288   --disable-neon           disable NEON optimizations
289   --disable-inline-asm     disable use of inline assembler
290   --disable-yasm           disable use of yasm assembler
291
292 Developer options (useful when working on Libav itself):
293   --disable-debug          disable debugging symbols
294   --enable-debug=LEVEL     set the debug level [$debuglevel]
295   --disable-optimizations  disable compiler optimizations
296   --enable-extra-warnings  enable more compiler warnings
297   --samples=PATH           location of test samples for FATE, if not set use
298                            \$LIBAV_SAMPLES at make invocation time.
299   --enable-neon-clobber-test check NEON registers for clobbering (should be
300                            used only for debugging purposes)
301   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
302                            should be used only for debugging purposes)
303   --enable-random          randomly enable/disable components
304   --disable-random
305   --enable-random=LIST     randomly enable/disable specific components or
306   --disable-random=LIST    component groups. LIST is a comma-separated list
307                            of NAME[:PROB] entries where NAME is a component
308                            (group) and PROB the probability associated with
309                            NAME (default 0.5).
310   --random-seed=VALUE      seed value for --enable/disable-random
311
312 NOTE: Object files are built at the place where configure is launched.
313 EOF
314   exit 0
315 }
316
317 quotes='""'
318
319 log(){
320     echo "$@" >> $logfile
321 }
322
323 log_file(){
324     log BEGIN $1
325     pr -n -t $1 >> $logfile
326     log END $1
327 }
328
329 echolog(){
330     log "$@"
331     echo "$@"
332 }
333
334 warn(){
335     log "WARNING: $*"
336     WARNINGS="${WARNINGS}WARNING: $*\n"
337 }
338
339 die(){
340     echolog "$@"
341     cat <<EOF
342
343 If you think configure made a mistake, make sure you are using the latest
344 version from Git.  If the latest version fails, report the problem to the
345 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
346 EOF
347     if disabled logging; then
348         cat <<EOF
349 Rerun configure with logging enabled (do not use --disable-logging), and
350 include the log this produces with your report.
351 EOF
352     else
353         cat <<EOF
354 Include the log file "$logfile" produced by configure as this will help
355 solving the problem.
356 EOF
357     fi
358     exit 1
359 }
360
361 # Avoid locale weirdness, besides we really just want to translate ASCII.
362 toupper(){
363     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
364 }
365
366 tolower(){
367     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
368 }
369
370 c_escape(){
371     echo "$*" | sed 's/["\\]/\\\0/g'
372 }
373
374 sh_quote(){
375     v=$(echo "$1" | sed "s/'/'\\\\''/g")
376     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
377     echo "$v"
378 }
379
380 cleanws(){
381     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
382 }
383
384 filter(){
385     pat=$1
386     shift
387     for v; do
388         eval "case $v in $pat) echo $v ;; esac"
389     done
390 }
391
392 filter_out(){
393     pat=$1
394     shift
395     for v; do
396         eval "case $v in $pat) ;; *) echo $v ;; esac"
397     done
398 }
399
400 map(){
401     m=$1
402     shift
403     for v; do eval $m; done
404 }
405
406 add_suffix(){
407     suffix=$1
408     shift
409     for v; do echo ${v}${suffix}; done
410 }
411
412 set_all(){
413     value=$1
414     shift
415     for var in $*; do
416         eval $var=$value
417     done
418 }
419
420 set_weak(){
421     value=$1
422     shift
423     for var; do
424         eval : \${$var:=$value}
425     done
426 }
427
428 sanitize_var_name(){
429     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
430 }
431
432 set_safe(){
433     var=$1
434     shift
435     eval $(sanitize_var_name "$var")='$*'
436 }
437
438 get_safe(){
439     eval echo \$$(sanitize_var_name "$1")
440 }
441
442 pushvar(){
443     for pvar in $*; do
444         eval level=\${${pvar}_level:=0}
445         eval ${pvar}_${level}="\$$pvar"
446         eval ${pvar}_level=$(($level+1))
447     done
448 }
449
450 popvar(){
451     for pvar in $*; do
452         eval level=\${${pvar}_level:-0}
453         test $level = 0 && continue
454         eval level=$(($level-1))
455         eval $pvar="\${${pvar}_${level}}"
456         eval ${pvar}_level=$level
457         eval unset ${pvar}_${level}
458     done
459 }
460
461 enable(){
462     set_all yes $*
463 }
464
465 disable(){
466     set_all no $*
467 }
468
469 enable_weak(){
470     set_weak yes $*
471 }
472
473 disable_weak(){
474     set_weak no $*
475 }
476
477 enable_safe(){
478     for var; do
479         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
480     done
481 }
482
483 disable_safe(){
484     for var; do
485         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
486     done
487 }
488
489 do_enable_deep(){
490     for var; do
491         enabled $var && continue
492         eval sel="\$${var}_select"
493         eval sgs="\$${var}_suggest"
494         pushvar var sgs
495         enable_deep $sel
496         popvar sgs
497         enable_deep_weak $sgs
498         popvar var
499     done
500 }
501
502 enable_deep(){
503     do_enable_deep $*
504     enable $*
505 }
506
507 enable_deep_weak(){
508     for var; do
509         disabled $var && continue
510         pushvar var
511         do_enable_deep $var
512         popvar var
513         enable_weak $var
514     done
515 }
516
517 enabled(){
518     test "${1#!}" = "$1" && op== || op=!=
519     eval test "x\$${1#!}" $op "xyes"
520 }
521
522 disabled(){
523     test "${1#!}" = "$1" && op== || op=!=
524     eval test "x\$${1#!}" $op "xno"
525 }
526
527 enabled_all(){
528     for opt; do
529         enabled $opt || return 1
530     done
531 }
532
533 disabled_all(){
534     for opt; do
535         disabled $opt || return 1
536     done
537 }
538
539 enabled_any(){
540     for opt; do
541         enabled $opt && return 0
542     done
543 }
544
545 disabled_any(){
546     for opt; do
547         disabled $opt && return 0
548     done
549     return 1
550 }
551
552 set_default(){
553     for opt; do
554         eval : \${$opt:=\$${opt}_default}
555     done
556 }
557
558 is_in(){
559     value=$1
560     shift
561     for var in $*; do
562         [ $var = $value ] && return 0
563     done
564     return 1
565 }
566
567 do_check_deps(){
568     for cfg; do
569         cfg="${cfg#!}"
570         enabled ${cfg}_checking && die "Circular dependency for $cfg."
571         disabled ${cfg}_checking && continue
572         enable ${cfg}_checking
573         append allopts $cfg
574
575         eval dep_all="\$${cfg}_deps"
576         eval dep_any="\$${cfg}_deps_any"
577         eval dep_sel="\$${cfg}_select"
578         eval dep_sgs="\$${cfg}_suggest"
579         eval dep_ifa="\$${cfg}_if"
580         eval dep_ifn="\$${cfg}_if_any"
581
582         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
583         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
584         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
585
586         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
587         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
588         enabled_all  $dep_all || disable $cfg
589         enabled_any  $dep_any || disable $cfg
590         disabled_any $dep_sel && disable $cfg
591
592         if enabled $cfg; then
593             enable_deep $dep_sel
594             enable_deep_weak $dep_sgs
595         fi
596
597         disable ${cfg}_checking
598     done
599 }
600
601 check_deps(){
602     unset allopts
603
604     do_check_deps "$@"
605
606     for cfg in $allopts; do
607         enabled $cfg || continue
608         eval dep_extralibs="\$${cfg}_extralibs"
609         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
610     done
611 }
612
613 print_config(){
614     pfx=$1
615     files=$2
616     shift 2
617     map 'eval echo "$v \${$v:-no}"' "$@" |
618     awk "BEGIN { split(\"$files\", files) }
619         {
620             c = \"$pfx\" toupper(\$1);
621             v = \$2;
622             sub(/yes/, 1, v);
623             sub(/no/,  0, v);
624             for (f in files) {
625                 file = files[f];
626                 if (file ~ /\\.h\$/) {
627                     printf(\"#define %s %d\\n\", c, v) >>file;
628                 } else if (file ~ /\\.asm\$/) {
629                     printf(\"%%define %s %d\\n\", c, v) >>file;
630                 } else if (file ~ /\\.mak\$/) {
631                     n = -v ? \"\" : \"!\";
632                     printf(\"%s%s=yes\\n\", n, c) >>file;
633                 }
634             }
635         }"
636 }
637
638 print_enabled(){
639     suf=$1
640     shift
641     for v; do
642         enabled $v && printf "%s\n" ${v%$suf};
643     done
644 }
645
646 append(){
647     var=$1
648     shift
649     eval "$var=\"\$$var $*\""
650 }
651
652 prepend(){
653     var=$1
654     shift
655     eval "$var=\"$* \$$var\""
656 }
657
658 unique(){
659     var=$1
660     uniq_list=""
661     for tok in $(eval echo \$$var); do
662         uniq_list="$(filter_out $tok $uniq_list) $tok"
663     done
664     eval "$var=\"${uniq_list}\""
665 }
666
667 add_cppflags(){
668     append CPPFLAGS "$@"
669 }
670
671 add_cflags(){
672     append CFLAGS $($cflags_filter "$@")
673 }
674
675 add_asflags(){
676     append ASFLAGS $($asflags_filter "$@")
677 }
678
679 add_ldflags(){
680     append LDFLAGS $($ldflags_filter "$@")
681 }
682
683 add_stripflags(){
684     append STRIPFLAGS "$@"
685 }
686
687 add_extralibs(){
688     prepend extralibs $($ldflags_filter "$@")
689 }
690
691 add_host_cppflags(){
692     append host_cppflags "$@"
693 }
694
695 add_host_cflags(){
696     append host_cflags $($host_cflags_filter "$@")
697 }
698
699 add_host_ldflags(){
700     append host_ldflags $($host_ldflags_filter "$@")
701 }
702
703 add_compat(){
704     append compat_objs $1
705     shift
706     map 'add_cppflags -D$v' "$@"
707 }
708
709 check_cmd(){
710     log "$@"
711     "$@" >> $logfile 2>&1
712 }
713
714 cc_o(){
715     eval printf '%s\\n' $CC_O
716 }
717
718 cc_e(){
719     eval printf '%s\\n' $CC_E
720 }
721
722 check_cc(){
723     log check_cc "$@"
724     cat > $TMPC
725     log_file $TMPC
726     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
727 }
728
729 check_cpp(){
730     log check_cpp "$@"
731     cat > $TMPC
732     log_file $TMPC
733     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
734 }
735
736 as_o(){
737     eval printf '%s\\n' $AS_O
738 }
739
740 check_as(){
741     log check_as "$@"
742     cat > $TMPS
743     log_file $TMPS
744     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
745 }
746
747 check_inline_asm(){
748     log check_inline_asm "$@"
749     name="$1"
750     code="$2"
751     shift 2
752     disable $name
753     check_cc "$@" <<EOF && enable $name
754 void foo(void){ __asm__ volatile($code); }
755 EOF
756 }
757
758 check_insn(){
759     log check_insn "$@"
760     check_inline_asm ${1}_inline "\"$2\""
761     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
762 }
763
764 check_yasm(){
765     log check_yasm "$@"
766     echo "$1" > $TMPS
767     log_file $TMPS
768     shift 1
769     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
770 }
771
772 ld_o(){
773     eval printf '%s\\n' $LD_O
774 }
775
776 check_ld(){
777     log check_ld "$@"
778     flags=$(filter_out '-l*' "$@")
779     libs=$(filter '-l*' "$@")
780     check_cc $($cflags_filter $flags) || return
781     flags=$($ldflags_filter $flags)
782     libs=$($ldflags_filter $libs)
783     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
784 }
785
786 print_include(){
787     hdr=$1
788     test "${hdr%.h}" = "${hdr}" &&
789         echo "#include $hdr"    ||
790         echo "#include <$hdr>"
791 }
792
793 check_code(){
794     log check_code "$@"
795     check=$1
796     headers=$2
797     code=$3
798     shift 3
799     {
800         for hdr in $headers; do
801             print_include $hdr
802         done
803         echo "int main(void) { $code; return 0; }"
804     } | check_$check "$@"
805 }
806
807 check_cppflags(){
808     log check_cppflags "$@"
809     check_cc "$@" <<EOF && append CPPFLAGS "$@"
810 int x;
811 EOF
812 }
813
814 test_cflags(){
815     log test_cflags "$@"
816     set -- $($cflags_filter "$@")
817     check_cc "$@" <<EOF
818 int x;
819 EOF
820 }
821
822 check_cflags(){
823     log check_cflags "$@"
824     test_cflags "$@" && add_cflags "$@"
825 }
826
827 test_ldflags(){
828     log test_ldflags "$@"
829     check_ld "$@" <<EOF
830 int main(void){ return 0; }
831 EOF
832 }
833
834 check_ldflags(){
835     log check_ldflags "$@"
836     test_ldflags "$@" && add_ldflags "$@"
837 }
838
839 test_stripflags(){
840     log test_stripflags "$@"
841     # call check_cc to get a fresh TMPO
842     check_cc <<EOF
843 int main(void) { return 0; }
844 EOF
845     check_cmd $strip $STRIPFLAGS "$@" $TMPO
846 }
847
848 check_stripflags(){
849     log check_stripflags "$@"
850     test_stripflags "$@" && add_stripflags "$@"
851 }
852
853 check_header(){
854     log check_header "$@"
855     header=$1
856     shift
857     disable_safe $header
858     check_cpp "$@" <<EOF && enable_safe $header
859 #include <$header>
860 int x;
861 EOF
862 }
863
864 check_func(){
865     log check_func "$@"
866     func=$1
867     shift
868     disable $func
869     check_ld "$@" <<EOF && enable $func
870 extern int $func();
871 int main(void){ $func(); }
872 EOF
873 }
874
875 check_mathfunc(){
876     log check_mathfunc "$@"
877     func=$1
878     narg=$2
879     shift 2
880     test $narg = 2 && args="f, g" || args="f"
881     disable $func
882     check_ld "$@" <<EOF && enable $func
883 #include <math.h>
884 float foo(float f, float g) { return $func($args); }
885 int main(void){ return 0; }
886 EOF
887 }
888
889 check_func_headers(){
890     log check_func_headers "$@"
891     headers=$1
892     funcs=$2
893     shift 2
894     {
895         for hdr in $headers; do
896             print_include $hdr
897         done
898         for func in $funcs; do
899             echo "long check_$func(void) { return (long) $func; }"
900         done
901         echo "int main(void) { return 0; }"
902     } | check_ld "$@" && enable $funcs && enable_safe $headers
903 }
904
905 check_cpp_condition(){
906     log check_cpp_condition "$@"
907     header=$1
908     condition=$2
909     shift 2
910     check_cpp "$@" <<EOF
911 #include <$header>
912 #if !($condition)
913 #error "unsatisfied condition: $condition"
914 #endif
915 EOF
916 }
917
918 check_lib(){
919     log check_lib "$@"
920     header="$1"
921     func="$2"
922     shift 2
923     check_header $header && check_func $func "$@" && add_extralibs "$@"
924 }
925
926 check_lib2(){
927     log check_lib2 "$@"
928     headers="$1"
929     funcs="$2"
930     shift 2
931     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
932 }
933
934 check_pkg_config(){
935     log check_pkg_config "$@"
936     pkg="$1"
937     headers="$2"
938     funcs="$3"
939     shift 3
940     check_cmd $pkg_config --exists --print-errors $pkg || return
941     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
942     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
943     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
944         set_safe ${pkg}_cflags $pkg_cflags   &&
945         set_safe ${pkg}_libs   $pkg_libs
946 }
947
948 check_exec(){
949     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
950 }
951
952 check_exec_crash(){
953     code=$(cat)
954
955     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
956     # are safe but may not be available everywhere.  Thus we use
957     # raise(SIGTERM) instead.  The check is run in a subshell so we
958     # can redirect the "Terminated" message from the shell.  SIGBUS
959     # is not defined by standard C so it is used conditionally.
960
961     (check_exec "$@") >> $logfile 2>&1 <<EOF
962 #include <signal.h>
963 static void sighandler(int sig){
964     raise(SIGTERM);
965 }
966 int foo(void){
967     $code
968 }
969 int (*func_ptr)(void) = foo;
970 int main(void){
971     signal(SIGILL, sighandler);
972     signal(SIGFPE, sighandler);
973     signal(SIGSEGV, sighandler);
974 #ifdef SIGBUS
975     signal(SIGBUS, sighandler);
976 #endif
977     return func_ptr();
978 }
979 EOF
980 }
981
982 check_type(){
983     log check_type "$@"
984     headers=$1
985     type=$2
986     shift 2
987     disable_safe "$type"
988     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
989 }
990
991 check_struct(){
992     log check_struct "$@"
993     headers=$1
994     struct=$2
995     member=$3
996     shift 3
997     disable_safe "${struct}_${member}"
998     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
999         enable_safe "${struct}_${member}"
1000 }
1001
1002 check_builtin(){
1003     log check_builtin "$@"
1004     name=$1
1005     headers=$2
1006     builtin=$3
1007     shift 3
1008     disable "$name"
1009     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1010 }
1011
1012 check_compile_assert(){
1013     log check_compile_assert "$@"
1014     name=$1
1015     headers=$2
1016     condition=$3
1017     shift 3
1018     disable "$name"
1019     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1020 }
1021
1022 require(){
1023     name="$1"
1024     header="$2"
1025     func="$3"
1026     shift 3
1027     check_lib $header $func "$@" || die "ERROR: $name not found"
1028 }
1029
1030 require2(){
1031     name="$1"
1032     headers="$2"
1033     func="$3"
1034     shift 3
1035     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1036 }
1037
1038 require_pkg_config(){
1039     pkg="$1"
1040     check_pkg_config "$@" || die "ERROR: $pkg not found"
1041     add_cflags    $(get_safe ${pkg}_cflags)
1042     add_extralibs $(get_safe ${pkg}_libs)
1043 }
1044
1045 hostcc_e(){
1046     eval printf '%s\\n' $HOSTCC_E
1047 }
1048
1049 hostcc_o(){
1050     eval printf '%s\\n' $HOSTCC_O
1051 }
1052
1053 check_host_cc(){
1054     log check_host_cc "$@"
1055     cat > $TMPC
1056     log_file $TMPC
1057     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1058 }
1059
1060 check_host_cpp(){
1061     log check_host_cpp "$@"
1062     cat > $TMPC
1063     log_file $TMPC
1064     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1065 }
1066
1067 check_host_cppflags(){
1068     log check_host_cppflags "$@"
1069     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1070 int x;
1071 EOF
1072 }
1073
1074 check_host_cflags(){
1075     log check_host_cflags "$@"
1076     set -- $($host_cflags_filter "$@")
1077     check_host_cc "$@" <<EOF && append host_cflags "$@"
1078 int x;
1079 EOF
1080 }
1081
1082 check_host_cpp_condition(){
1083     log check_host_cpp_condition "$@"
1084     header=$1
1085     condition=$2
1086     shift 2
1087     check_host_cpp "$@" <<EOF
1088 #include <$header>
1089 #if !($condition)
1090 #error "unsatisfied condition: $condition"
1091 #endif
1092 EOF
1093 }
1094
1095 apply(){
1096     file=$1
1097     shift
1098     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1099 }
1100
1101 cp_if_changed(){
1102     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1103     mkdir -p "$(dirname $2)"
1104     $cp_f "$1" "$2"
1105 }
1106
1107 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1108 # system-dependent things.
1109
1110 COMPONENT_LIST="
1111     bsfs
1112     decoders
1113     demuxers
1114     encoders
1115     filters
1116     hwaccels
1117     indevs
1118     muxers
1119     outdevs
1120     parsers
1121     protocols
1122 "
1123
1124 EXAMPLE_LIST="
1125     avcodec_example
1126     filter_audio_example
1127     metadata_example
1128     output_example
1129     transcode_aac_example
1130 "
1131
1132 EXTERNAL_LIBRARY_LIST="
1133     avisynth
1134     bzlib
1135     frei0r
1136     gnutls
1137     libbs2b
1138     libcdio
1139     libdc1394
1140     libfaac
1141     libfdk_aac
1142     libfontconfig
1143     libfreetype
1144     libgsm
1145     libilbc
1146     libmp3lame
1147     libopencore_amrnb
1148     libopencore_amrwb
1149     libopencv
1150     libopenjpeg
1151     libopus
1152     libpulse
1153     librtmp
1154     libschroedinger
1155     libspeex
1156     libtheora
1157     libtwolame
1158     libvo_aacenc
1159     libvo_amrwbenc
1160     libvorbis
1161     libvpx
1162     libwavpack
1163     libwebp
1164     libx264
1165     libx265
1166     libxavs
1167     libxvid
1168     openssl
1169     x11grab
1170     zlib
1171 "
1172
1173 FEATURE_LIST="
1174     gray
1175     hardcoded_tables
1176     runtime_cpudetect
1177     safe_bitstream_reader
1178     shared
1179     small
1180     sram
1181     static
1182     swscale_alpha
1183 "
1184
1185 HWACCEL_LIST="
1186     dxva2
1187     vaapi
1188     vda
1189     vdpau
1190 "
1191
1192 LIBRARY_LIST="
1193     avcodec
1194     avdevice
1195     avfilter
1196     avformat
1197     avresample
1198     avutil
1199     swscale
1200 "
1201
1202 LICENSE_LIST="
1203     gpl
1204     nonfree
1205     version3
1206 "
1207
1208 PROGRAM_LIST="
1209     avconv
1210     avplay
1211     avprobe
1212     avserver
1213 "
1214
1215 SUBSYSTEM_LIST="
1216     dct
1217     doc
1218     error_resilience
1219     fft
1220     lsp
1221     lzo
1222     mdct
1223     network
1224     rdft
1225 "
1226
1227 CONFIG_LIST="
1228     $COMPONENT_LIST
1229     $EXAMPLE_LIST
1230     $EXTERNAL_LIBRARY_LIST
1231     $FEATURE_LIST
1232     $HWACCEL_LIST
1233     $LICENSE_LIST
1234     $LIBRARY_LIST
1235     $PROGRAM_LIST
1236     $SUBSYSTEM_LIST
1237     memalign_hack
1238     neon_clobber_test
1239     pic
1240     pod2man
1241     texi2html
1242     thumb
1243     xmm_clobber_test
1244 "
1245
1246 THREADS_LIST="
1247     pthreads
1248     w32threads
1249 "
1250
1251 ATOMICS_LIST="
1252     atomics_gcc
1253     atomics_suncc
1254     atomics_win32
1255 "
1256
1257 ARCH_LIST="
1258     aarch64
1259     alpha
1260     arm
1261     avr32
1262     avr32_ap
1263     avr32_uc
1264     bfin
1265     ia64
1266     m68k
1267     mips
1268     mips64
1269     parisc
1270     ppc
1271     ppc64
1272     s390
1273     sh4
1274     sparc
1275     sparc64
1276     tilegx
1277     tilepro
1278     tomi
1279     x86
1280     x86_32
1281     x86_64
1282 "
1283
1284 ARCH_EXT_LIST_ARM="
1285     armv5te
1286     armv6
1287     armv6t2
1288     armv8
1289     neon
1290     vfp
1291     vfpv3
1292 "
1293
1294 ARCH_EXT_LIST_X86_SIMD="
1295     amd3dnow
1296     amd3dnowext
1297     avx
1298     avx2
1299     fma3
1300     fma4
1301     mmx
1302     mmxext
1303     sse
1304     sse2
1305     sse3
1306     sse4
1307     sse42
1308     ssse3
1309     xop
1310 "
1311
1312 ARCH_EXT_LIST_PPC="
1313     altivec
1314     dcbzl
1315     ldbrx
1316     ppc4xx
1317 "
1318
1319 ARCH_EXT_LIST_X86="
1320     $ARCH_EXT_LIST_X86_SIMD
1321     cpunop
1322     i686
1323 "
1324
1325 ARCH_EXT_LIST="
1326     $ARCH_EXT_LIST_ARM
1327     $ARCH_EXT_LIST_PPC
1328     $ARCH_EXT_LIST_X86
1329     loongson
1330     vis
1331 "
1332
1333 ARCH_FEATURES="
1334     aligned_stack
1335     fast_64bit
1336     fast_clz
1337     fast_cmov
1338     local_aligned_8
1339     local_aligned_16
1340 "
1341
1342 BUILTIN_LIST="
1343     atomic_cas_ptr
1344     machine_rw_barrier
1345     MemoryBarrier
1346     mm_empty
1347     rdtsc
1348     sync_val_compare_and_swap
1349 "
1350 HAVE_LIST_CMDLINE="
1351     inline_asm
1352     symver
1353     yasm
1354 "
1355
1356 HAVE_LIST_PUB="
1357     bigendian
1358     fast_unaligned
1359 "
1360
1361 HEADERS_LIST="
1362     alsa_asoundlib_h
1363     altivec_h
1364     arpa_inet_h
1365     cdio_paranoia_h
1366     cdio_paranoia_paranoia_h
1367     dev_bktr_ioctl_bt848_h
1368     dev_bktr_ioctl_meteor_h
1369     dev_ic_bt8xx_h
1370     dev_video_bktr_ioctl_bt848_h
1371     dev_video_meteor_ioctl_meteor_h
1372     direct_h
1373     dlfcn_h
1374     dxva_h
1375     gsm_h
1376     io_h
1377     mach_mach_time_h
1378     machine_ioctl_bt848_h
1379     machine_ioctl_meteor_h
1380     malloc_h
1381     poll_h
1382     sndio_h
1383     soundcard_h
1384     sys_mman_h
1385     sys_param_h
1386     sys_resource_h
1387     sys_select_h
1388     sys_soundcard_h
1389     sys_time_h
1390     sys_un_h
1391     sys_videoio_h
1392     unistd_h
1393     windows_h
1394     winsock2_h
1395 "
1396
1397 MATH_FUNCS="
1398     atanf
1399     atan2f
1400     cbrtf
1401     cosf
1402     exp2
1403     exp2f
1404     expf
1405     isinf
1406     isnan
1407     ldexpf
1408     llrint
1409     llrintf
1410     log2
1411     log2f
1412     log10f
1413     lrint
1414     lrintf
1415     powf
1416     rint
1417     round
1418     roundf
1419     sinf
1420     trunc
1421     truncf
1422 "
1423
1424 SYSTEM_FUNCS="
1425     aligned_malloc
1426     closesocket
1427     CommandLineToArgvW
1428     CoTaskMemFree
1429     CryptGenRandom
1430     dlopen
1431     fcntl
1432     flt_lim
1433     fork
1434     getaddrinfo
1435     gethrtime
1436     getopt
1437     GetProcessAffinityMask
1438     GetProcessMemoryInfo
1439     GetProcessTimes
1440     getrusage
1441     getservbyport
1442     GetSystemTimeAsFileTime
1443     gettimeofday
1444     inet_aton
1445     isatty
1446     jack_port_get_latency_range
1447     localtime_r
1448     mach_absolute_time
1449     MapViewOfFile
1450     memalign
1451     mkstemp
1452     mmap
1453     mprotect
1454     nanosleep
1455     posix_memalign
1456     sched_getaffinity
1457     SetConsoleTextAttribute
1458     setmode
1459     setrlimit
1460     Sleep
1461     strerror_r
1462     strptime
1463     sysconf
1464     sysctl
1465     usleep
1466     VirtualAlloc
1467 "
1468
1469 TOOLCHAIN_FEATURES="
1470     asm_mod_q
1471     attribute_may_alias
1472     attribute_packed
1473     ebp_available
1474     ebx_available
1475     gnu_as
1476     ibm_asm
1477     inline_asm_labels
1478     pragma_deprecated
1479     symver_asm_label
1480     symver_gnu_asm
1481     vfp_args
1482     xform_asm
1483     xmm_clobbers
1484 "
1485
1486 TYPES_LIST="
1487     socklen_t
1488     struct_addrinfo
1489     struct_group_source_req
1490     struct_ip_mreq_source
1491     struct_ipv6_mreq
1492     struct_pollfd
1493     struct_rusage_ru_maxrss
1494     struct_sockaddr_in6
1495     struct_sockaddr_sa_len
1496     struct_sockaddr_storage
1497     struct_v4l2_frmivalenum_discrete
1498 "
1499
1500 HAVE_LIST="
1501     $ARCH_EXT_LIST
1502     $(add_suffix _external $ARCH_EXT_LIST)
1503     $(add_suffix _inline   $ARCH_EXT_LIST)
1504     $ARCH_FEATURES
1505     $ATOMICS_LIST
1506     $BUILTIN_LIST
1507     $HAVE_LIST_CMDLINE
1508     $HAVE_LIST_PUB
1509     $HEADERS_LIST
1510     $MATH_FUNCS
1511     $SYSTEM_FUNCS
1512     $THREADS_LIST
1513     $TOOLCHAIN_FEATURES
1514     $TYPES_LIST
1515     atomics_native
1516     dos_paths
1517     dxva2_lib
1518     libc_msvcrt
1519     libdc1394_1
1520     libdc1394_2
1521     sdl
1522     threads
1523     vdpau_x11
1524     xlib
1525 "
1526
1527 # options emitted with CONFIG_ prefix but not available on the command line
1528 CONFIG_EXTRA="
1529     aandcttables
1530     ac3dsp
1531     audio_frame_queue
1532     cabac
1533     dsputil
1534     gcrypt
1535     golomb
1536     gplv3
1537     h263dsp
1538     h264chroma
1539     h264dsp
1540     h264pred
1541     h264qpel
1542     hpeldsp
1543     huffman
1544     huffyuvdsp
1545     huffyuvencdsp
1546     intrax8
1547     lgplv3
1548     lpc
1549     mpegaudio
1550     mpegaudiodsp
1551     mpegvideo
1552     mpegvideoenc
1553     nettle
1554     qpeldsp
1555     rangecoder
1556     riffdec
1557     riffenc
1558     rtpdec
1559     rtpenc_chain
1560     sinewin
1561     tpeldsp
1562     videodsp
1563     vp3dsp
1564 "
1565
1566 CMDLINE_SELECT="
1567     $ARCH_EXT_LIST
1568     $CONFIG_LIST
1569     $HAVE_LIST_CMDLINE
1570     $THREADS_LIST
1571     asm
1572     cross_compile
1573     debug
1574     extra_warnings
1575     logging
1576     lto
1577     optimizations
1578 "
1579
1580 PATHS_LIST="
1581     bindir
1582     datadir
1583     docdir
1584     incdir
1585     libdir
1586     mandir
1587     prefix
1588     shlibdir
1589 "
1590
1591 CMDLINE_SET="
1592     $PATHS_LIST
1593     ar
1594     arch
1595     as
1596     build_suffix
1597     cc
1598     cpu
1599     cross_prefix
1600     dep_cc
1601     extra_version
1602     host_cc
1603     host_cflags
1604     host_ld
1605     host_ldflags
1606     host_libs
1607     host_os
1608     ld
1609     logfile
1610     malloc_prefix
1611     nm
1612     optflags
1613     pkg_config
1614     pkg_config_flags
1615     random_seed
1616     samples
1617     sysinclude
1618     sysroot
1619     target_exec
1620     target_os
1621     target_path
1622     target_samples
1623     toolchain
1624 "
1625
1626 CMDLINE_APPEND="
1627     extra_cflags
1628     host_cppflags
1629 "
1630
1631 # code dependency declarations
1632
1633 # architecture extensions
1634
1635 armv5te_deps="arm"
1636 armv6_deps="arm"
1637 armv6t2_deps="arm"
1638 armv8_deps="aarch64"
1639 neon_deps_any="aarch64 arm"
1640 vfp_deps_any="aarch64 arm"
1641 vfpv3_deps="vfp"
1642
1643 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1644
1645 altivec_deps="ppc"
1646 ppc4xx_deps="ppc"
1647
1648 cpunop_deps="i686"
1649 x86_64_select="i686"
1650 x86_64_suggest="fast_cmov"
1651
1652 amd3dnow_deps="mmx"
1653 amd3dnowext_deps="amd3dnow"
1654 i686_deps="x86"
1655 mmx_deps="x86"
1656 mmxext_deps="mmx"
1657 sse_deps="mmxext"
1658 sse2_deps="sse"
1659 sse3_deps="sse2"
1660 ssse3_deps="sse3"
1661 sse4_deps="ssse3"
1662 sse42_deps="sse4"
1663 avx_deps="sse42"
1664 xop_deps="avx"
1665 fma3_deps="avx"
1666 fma4_deps="avx"
1667 avx2_deps="avx"
1668
1669 mmx_external_deps="yasm"
1670 mmx_inline_deps="inline_asm"
1671 mmx_suggest="mmx_external mmx_inline"
1672
1673 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1674     eval dep=\$${ext}_deps
1675     eval ${ext}_external_deps='"${dep}_external"'
1676     eval ${ext}_inline_deps='"${dep}_inline"'
1677     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1678 done
1679
1680 aligned_stack_if_any="aarch64 ppc x86"
1681 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1682 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1683 fast_unaligned_if_any="aarch64 ppc x86"
1684
1685 need_memalign="altivec neon sse"
1686
1687 # system capabilities
1688 log2_deps="!libc_msvcrt"
1689
1690 symver_if_any="symver_asm_label symver_gnu_asm"
1691
1692 # threading support
1693 atomics_gcc_if="sync_val_compare_and_swap"
1694 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1695 atomics_win32_if="MemoryBarrier"
1696 atomics_native_if_any="$ATOMICS_LIST"
1697 w32threads_deps="atomics_native"
1698 threads_if_any="$THREADS_LIST"
1699
1700 # subsystems
1701 dct_select="rdft"
1702 error_resilience_select="dsputil"
1703 mdct_select="fft"
1704 rdft_select="fft"
1705 mpegaudio_select="mpegaudiodsp"
1706 mpegaudiodsp_select="dct"
1707 mpegvideo_select="dsputil hpeldsp videodsp"
1708 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
1709
1710 # decoders / encoders
1711 aac_decoder_select="mdct sinewin"
1712 aac_encoder_select="audio_frame_queue mdct sinewin"
1713 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1714 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1715 ac3_encoder_select="mdct ac3dsp dsputil"
1716 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1717 aic_decoder_select="dsputil golomb"
1718 alac_encoder_select="lpc"
1719 als_decoder_select="dsputil"
1720 amrnb_decoder_select="lsp"
1721 amrwb_decoder_select="lsp"
1722 amv_decoder_select="sp5x_decoder"
1723 ape_decoder_select="dsputil"
1724 asv1_decoder_select="dsputil"
1725 asv1_encoder_select="dsputil"
1726 asv2_decoder_select="dsputil"
1727 asv2_encoder_select="dsputil"
1728 atrac1_decoder_select="mdct sinewin"
1729 atrac3_decoder_select="mdct"
1730 atrac3p_decoder_select="mdct sinewin"
1731 bink_decoder_select="dsputil hpeldsp"
1732 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1733 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1734 cavs_decoder_select="dsputil golomb h264chroma qpeldsp videodsp"
1735 cllc_decoder_select="dsputil"
1736 comfortnoise_encoder_select="lpc"
1737 cook_decoder_select="dsputil mdct sinewin"
1738 cscd_decoder_select="lzo"
1739 cscd_decoder_suggest="zlib"
1740 dca_decoder_select="mdct"
1741 dnxhd_decoder_select="dsputil"
1742 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1743 dvvideo_decoder_select="dsputil"
1744 dvvideo_encoder_select="dsputil"
1745 dxa_decoder_deps="zlib"
1746 eac3_decoder_select="ac3_decoder"
1747 eac3_encoder_select="ac3_encoder"
1748 eamad_decoder_select="aandcttables dsputil mpegvideo"
1749 eatgq_decoder_select="aandcttables dsputil"
1750 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
1751 exr_decoder_deps="zlib"
1752 ffv1_decoder_select="golomb rangecoder"
1753 ffv1_encoder_select="rangecoder"
1754 ffvhuff_decoder_select="huffyuv_decoder"
1755 ffvhuff_encoder_select="huffyuv_encoder"
1756 fic_decoder_select="golomb"
1757 flac_decoder_select="golomb"
1758 flac_encoder_select="dsputil golomb lpc"
1759 flashsv_decoder_deps="zlib"
1760 flashsv_encoder_deps="zlib"
1761 flashsv2_decoder_deps="zlib"
1762 flv_decoder_select="h263_decoder"
1763 flv_encoder_select="h263_encoder"
1764 fourxm_decoder_select="dsputil"
1765 fraps_decoder_select="dsputil huffman"
1766 g2m_decoder_deps="zlib"
1767 g2m_decoder_select="dsputil"
1768 h261_decoder_select="error_resilience mpegvideo"
1769 h261_encoder_select="aandcttables mpegvideoenc"
1770 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo qpeldsp"
1771 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1772 h263i_decoder_select="h263_decoder"
1773 h263p_encoder_select="h263_encoder"
1774 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1775 h264_decoder_suggest="error_resilience"
1776 hevc_decoder_select="cabac dsputil golomb videodsp"
1777 huffyuv_decoder_select="dsputil huffyuvdsp"
1778 huffyuv_encoder_select="dsputil huffman huffyuvencdsp"
1779 iac_decoder_select="imc_decoder"
1780 imc_decoder_select="dsputil fft mdct sinewin"
1781 indeo3_decoder_select="hpeldsp"
1782 interplay_video_decoder_select="hpeldsp"
1783 jpegls_decoder_select="golomb mjpeg_decoder"
1784 jpegls_encoder_select="golomb"
1785 jv_decoder_select="dsputil"
1786 lagarith_decoder_select="huffyuvdsp"
1787 ljpeg_encoder_select="aandcttables mpegvideoenc"
1788 loco_decoder_select="golomb"
1789 mdec_decoder_select="dsputil error_resilience mpegvideo"
1790 metasound_decoder_select="lsp mdct sinewin"
1791 mimic_decoder_select="dsputil hpeldsp"
1792 mjpeg_decoder_select="dsputil hpeldsp"
1793 mjpeg_encoder_select="aandcttables mpegvideoenc"
1794 mjpegb_decoder_select="mjpeg_decoder"
1795 mlp_decoder_select="mlp_parser"
1796 motionpixels_decoder_select="dsputil"
1797 mp1_decoder_select="mpegaudio"
1798 mp1float_decoder_select="mpegaudio"
1799 mp2_decoder_select="mpegaudio"
1800 mp2float_decoder_select="mpegaudio"
1801 mp3_decoder_select="mpegaudio"
1802 mp3adu_decoder_select="mpegaudio"
1803 mp3adufloat_decoder_select="mpegaudio"
1804 mp3float_decoder_select="mpegaudio"
1805 mp3on4_decoder_select="mpegaudio"
1806 mp3on4float_decoder_select="mpegaudio"
1807 mpc7_decoder_select="dsputil mpegaudiodsp"
1808 mpc8_decoder_select="mpegaudiodsp"
1809 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1810 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1811 mpeg1video_decoder_select="error_resilience mpegvideo"
1812 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1813 mpeg2video_decoder_select="error_resilience mpegvideo"
1814 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1815 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1816 mpeg4_encoder_select="h263_encoder"
1817 msmpeg4v1_decoder_select="h263_decoder"
1818 msmpeg4v2_decoder_select="h263_decoder"
1819 msmpeg4v2_encoder_select="h263_encoder"
1820 msmpeg4v3_decoder_select="h263_decoder"
1821 msmpeg4v3_encoder_select="h263_encoder"
1822 mss2_decoder_select="error_resilience qpeldsp vc1_decoder"
1823 mxpeg_decoder_select="mjpeg_decoder"
1824 nellymoser_decoder_select="mdct sinewin"
1825 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1826 nuv_decoder_select="dsputil lzo"
1827 on2avc_decoder_select="mdct"
1828 opus_decoder_deps="avresample"
1829 png_decoder_deps="zlib"
1830 png_encoder_deps="zlib"
1831 png_encoder_select="huffyuvencdsp"
1832 prores_decoder_select="dsputil"
1833 prores_encoder_select="dsputil"
1834 qcelp_decoder_select="lsp"
1835 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1836 ra_144_encoder_select="audio_frame_queue lpc"
1837 ralf_decoder_select="golomb"
1838 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1839 rv10_encoder_select="h263_encoder"
1840 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1841 rv20_encoder_select="h263_encoder"
1842 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1843 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1844 shorten_decoder_select="golomb"
1845 sipr_decoder_select="lsp"
1846 sp5x_decoder_select="mjpeg_decoder"
1847 svq1_decoder_select="hpeldsp"
1848 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1849 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1850 svq3_decoder_suggest="zlib"
1851 tak_decoder_select="dsputil"
1852 theora_decoder_select="vp3_decoder"
1853 thp_decoder_select="mjpeg_decoder"
1854 tiff_decoder_suggest="zlib"
1855 tiff_encoder_suggest="zlib"
1856 truehd_decoder_select="mlp_decoder"
1857 truemotion2_decoder_select="dsputil"
1858 truespeech_decoder_select="dsputil"
1859 tscc_decoder_deps="zlib"
1860 twinvq_decoder_select="mdct lsp sinewin"
1861 utvideo_decoder_select="dsputil"
1862 utvideo_encoder_select="dsputil huffman huffyuvencdsp"
1863 vble_decoder_select="huffyuvdsp"
1864 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8 qpeldsp"
1865 vc1image_decoder_select="vc1_decoder"
1866 vorbis_decoder_select="mdct"
1867 vorbis_encoder_select="mdct"
1868 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1869 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1870 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1871 vp6a_decoder_select="vp6_decoder"
1872 vp6f_decoder_select="vp6_decoder"
1873 vp7_decoder_select="h264pred videodsp"
1874 vp8_decoder_select="h264pred videodsp"
1875 vp9_decoder_select="videodsp"
1876 webp_decoder_select="vp8_decoder"
1877 wmapro_decoder_select="mdct sinewin"
1878 wmav1_decoder_select="mdct sinewin"
1879 wmav1_encoder_select="mdct sinewin"
1880 wmav2_decoder_select="mdct sinewin"
1881 wmav2_encoder_select="mdct sinewin"
1882 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1883 wmv1_decoder_select="h263_decoder"
1884 wmv1_encoder_select="h263_encoder"
1885 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1886 wmv2_encoder_select="h263_encoder"
1887 wmv3_decoder_select="vc1_decoder"
1888 wmv3image_decoder_select="wmv3_decoder"
1889 zerocodec_decoder_deps="zlib"
1890 zlib_decoder_deps="zlib"
1891 zlib_encoder_deps="zlib"
1892 zmbv_decoder_deps="zlib"
1893 zmbv_encoder_deps="zlib"
1894
1895 # hardware accelerators
1896 dxva2_deps="dxva2api_h"
1897 vaapi_deps="va_va_h"
1898 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1899 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1900 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1901
1902 h263_vaapi_hwaccel_deps="vaapi"
1903 h263_vaapi_hwaccel_select="h263_decoder"
1904 h263_vdpau_hwaccel_deps="vdpau"
1905 h263_vdpau_hwaccel_select="h263_decoder"
1906 h264_dxva2_hwaccel_deps="dxva2"
1907 h264_dxva2_hwaccel_select="h264_decoder"
1908 h264_vaapi_hwaccel_deps="vaapi"
1909 h264_vaapi_hwaccel_select="h264_decoder"
1910 h264_vda_hwaccel_deps="vda"
1911 h264_vda_hwaccel_select="h264_decoder"
1912 h264_vda_old_hwaccel_deps="vda"
1913 h264_vda_old_hwaccel_select="h264_decoder"
1914 h264_vdpau_hwaccel_deps="vdpau"
1915 h264_vdpau_hwaccel_select="h264_decoder"
1916 mpeg1_vdpau_hwaccel_deps="vdpau"
1917 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1918 mpeg2_dxva2_hwaccel_deps="dxva2"
1919 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1920 mpeg2_vaapi_hwaccel_deps="vaapi"
1921 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1922 mpeg2_vdpau_hwaccel_deps="vdpau"
1923 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1924 mpeg4_vaapi_hwaccel_deps="vaapi"
1925 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1926 mpeg4_vdpau_hwaccel_deps="vdpau"
1927 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1928 vc1_dxva2_hwaccel_deps="dxva2"
1929 vc1_dxva2_hwaccel_select="vc1_decoder"
1930 vc1_vaapi_hwaccel_deps="vaapi"
1931 vc1_vaapi_hwaccel_select="vc1_decoder"
1932 vc1_vdpau_hwaccel_deps="vdpau"
1933 vc1_vdpau_hwaccel_select="vc1_decoder"
1934 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1935 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1936 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1937
1938 # parsers
1939 h264_parser_select="h264_decoder"
1940 mpegvideo_parser_select="error_resilience mpegvideo"
1941 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
1942 vc1_parser_select="mpegvideo"
1943
1944 # external libraries
1945 libfaac_encoder_deps="libfaac"
1946 libfaac_encoder_select="audio_frame_queue"
1947 libfdk_aac_decoder_deps="libfdk_aac"
1948 libfdk_aac_encoder_deps="libfdk_aac"
1949 libfdk_aac_encoder_select="audio_frame_queue"
1950 libgsm_decoder_deps="libgsm"
1951 libgsm_encoder_deps="libgsm"
1952 libgsm_ms_decoder_deps="libgsm"
1953 libgsm_ms_encoder_deps="libgsm"
1954 libilbc_decoder_deps="libilbc"
1955 libilbc_encoder_deps="libilbc"
1956 libmp3lame_encoder_deps="libmp3lame"
1957 libmp3lame_encoder_select="audio_frame_queue"
1958 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1959 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1960 libopencore_amrnb_encoder_select="audio_frame_queue"
1961 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1962 libopenjpeg_decoder_deps="libopenjpeg"
1963 libopenjpeg_encoder_deps="libopenjpeg"
1964 libopus_decoder_deps="libopus"
1965 libopus_encoder_deps="libopus"
1966 libopus_encoder_select="audio_frame_queue"
1967 libschroedinger_decoder_deps="libschroedinger"
1968 libschroedinger_encoder_deps="libschroedinger"
1969 libspeex_decoder_deps="libspeex"
1970 libspeex_encoder_deps="libspeex"
1971 libspeex_encoder_select="audio_frame_queue"
1972 libtheora_encoder_deps="libtheora"
1973 libtwolame_encoder_deps="libtwolame"
1974 libvo_aacenc_encoder_deps="libvo_aacenc"
1975 libvo_aacenc_encoder_select="audio_frame_queue"
1976 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1977 libvorbis_encoder_deps="libvorbis"
1978 libvorbis_encoder_select="audio_frame_queue"
1979 libvpx_vp8_decoder_deps="libvpx"
1980 libvpx_vp8_encoder_deps="libvpx"
1981 libvpx_vp9_decoder_deps="libvpx"
1982 libvpx_vp9_encoder_deps="libvpx"
1983 libwavpack_encoder_deps="libwavpack"
1984 libwebp_encoder_deps="libwebp"
1985 libx264_encoder_deps="libx264"
1986 libx265_encoder_deps="libx265"
1987 libxavs_encoder_deps="libxavs"
1988 libxvid_encoder_deps="libxvid"
1989
1990 # demuxers / muxers
1991 ac3_demuxer_select="ac3_parser"
1992 asf_demuxer_select="riffdec"
1993 asf_muxer_select="riffenc"
1994 asf_stream_muxer_select="asf_muxer"
1995 avi_demuxer_select="riffdec"
1996 avi_muxer_select="riffenc"
1997 avisynth_demuxer_deps="avisynth"
1998 avisynth_demuxer_select="riffdec"
1999 caf_demuxer_select="riffdec"
2000 dirac_demuxer_select="dirac_parser"
2001 dxa_demuxer_select="riffdec"
2002 eac3_demuxer_select="ac3_parser"
2003 f4v_muxer_select="mov_muxer"
2004 flac_demuxer_select="flac_parser"
2005 hds_muxer_select="flv_muxer"
2006 hls_muxer_select="mpegts_muxer"
2007 ipod_muxer_select="mov_muxer"
2008 ismv_muxer_select="mov_muxer"
2009 matroska_audio_muxer_select="matroska_muxer"
2010 matroska_demuxer_select="riffdec"
2011 matroska_demuxer_suggest="bzlib lzo zlib"
2012 matroska_muxer_select="riffenc"
2013 mmf_muxer_select="riffenc"
2014 mov_demuxer_select="riffdec"
2015 mov_demuxer_suggest="zlib"
2016 mov_muxer_select="riffenc rtpenc_chain"
2017 mp3_demuxer_select="mpegaudio_parser"
2018 mp4_muxer_select="mov_muxer"
2019 mpegts_muxer_select="adts_muxer latm_muxer"
2020 mpegtsraw_demuxer_select="mpegts_demuxer"
2021 mxf_d10_muxer_select="mxf_muxer"
2022 nut_muxer_select="riffenc"
2023 nuv_demuxer_select="riffdec"
2024 ogg_demuxer_select="golomb"
2025 psp_muxer_select="mov_muxer"
2026 rtp_demuxer_select="sdp_demuxer"
2027 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2028 rtsp_demuxer_select="http_protocol rtpdec"
2029 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2030 sap_demuxer_select="sdp_demuxer"
2031 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2032 sdp_demuxer_select="rtpdec"
2033 smoothstreaming_muxer_select="ismv_muxer"
2034 spdif_muxer_select="aac_parser"
2035 tak_demuxer_select="tak_parser"
2036 tg2_muxer_select="mov_muxer"
2037 tgp_muxer_select="mov_muxer"
2038 w64_demuxer_select="wav_demuxer"
2039 wav_demuxer_select="riffdec"
2040 wav_muxer_select="riffenc"
2041 webm_muxer_select="riffenc"
2042 wtv_demuxer_select="riffdec"
2043 xmv_demuxer_select="riffdec"
2044 xwma_demuxer_select="riffdec"
2045
2046 # indevs / outdevs
2047 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2048 alsa_outdev_deps="alsa_asoundlib_h"
2049 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2050 dv1394_indev_deps="dv1394"
2051 dv1394_indev_select="dv_demuxer"
2052 fbdev_indev_deps="linux_fb_h"
2053 jack_indev_deps="jack_jack_h pthreads"
2054 libcdio_indev_deps="libcdio"
2055 libdc1394_indev_deps="libdc1394"
2056 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2057 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2058 pulse_indev_deps="libpulse"
2059 sndio_indev_deps="sndio_h"
2060 sndio_outdev_deps="sndio_h"
2061 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2062 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2063 vfwcap_indev_extralibs="-lavicap32"
2064 x11grab_indev_deps="x11grab XShmCreateImage"
2065
2066 # protocols
2067 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2068 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2069 ffrtmpcrypt_protocol_select="tcp_protocol"
2070 ffrtmphttp_protocol_deps="!librtmp_protocol"
2071 ffrtmphttp_protocol_select="http_protocol"
2072 gopher_protocol_select="network"
2073 http_protocol_select="tcp_protocol"
2074 httpproxy_protocol_select="tcp_protocol"
2075 https_protocol_select="tls_protocol"
2076 librtmp_protocol_deps="librtmp"
2077 librtmpe_protocol_deps="librtmp"
2078 librtmps_protocol_deps="librtmp"
2079 librtmpt_protocol_deps="librtmp"
2080 librtmpte_protocol_deps="librtmp"
2081 mmsh_protocol_select="http_protocol"
2082 mmst_protocol_select="network"
2083 rtmp_protocol_deps="!librtmp_protocol"
2084 rtmp_protocol_select="tcp_protocol"
2085 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2086 rtmps_protocol_deps="!librtmp_protocol"
2087 rtmps_protocol_select="tls_protocol"
2088 rtmpt_protocol_select="ffrtmphttp_protocol"
2089 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2090 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2091 rtp_protocol_select="udp_protocol"
2092 sctp_protocol_deps="struct_sctp_event_subscribe"
2093 sctp_protocol_select="network"
2094 srtp_protocol_select="rtp_protocol"
2095 tcp_protocol_select="network"
2096 tls_protocol_deps_any="openssl gnutls"
2097 tls_protocol_select="tcp_protocol"
2098 udp_protocol_select="network"
2099 unix_protocol_deps="sys_un_h"
2100 unix_protocol_select="network"
2101
2102 # filters
2103 blackframe_filter_deps="gpl"
2104 boxblur_filter_deps="gpl"
2105 bs2b_filter_deps="libbs2b"
2106 cropdetect_filter_deps="gpl"
2107 delogo_filter_deps="gpl"
2108 drawtext_filter_deps="libfreetype"
2109 frei0r_filter_deps="frei0r dlopen"
2110 frei0r_filter_extralibs='$ldl'
2111 frei0r_src_filter_deps="frei0r dlopen"
2112 frei0r_src_filter_extralibs='$ldl'
2113 hqdn3d_filter_deps="gpl"
2114 interlace_filter_deps="gpl"
2115 ocv_filter_deps="libopencv"
2116 resample_filter_deps="avresample"
2117 scale_filter_deps="swscale"
2118
2119 # examples
2120 avcodec_example_deps="avcodec avutil"
2121 filter_audio_example_deps="avfilter avutil"
2122 metadata_example_deps="avformat avutil"
2123 output_example_deps="avcodec avformat avutil swscale"
2124 transcode_aac_example_deps="avcodec avformat avresample"
2125
2126 # libraries, in linking order
2127 avcodec_deps="avutil"
2128 avdevice_deps="avformat avcodec avutil"
2129 avfilter_deps="avutil"
2130 avformat_deps="avcodec avutil"
2131 avresample_deps="avutil"
2132 swscale_deps="avutil"
2133
2134 # programs
2135 avconv_deps="avcodec avfilter avformat avresample swscale"
2136 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2137                fps_filter null_filter resample_filter scale_filter
2138                setpts_filter trim_filter"
2139 avplay_deps="avcodec avformat avresample swscale sdl"
2140 avplay_libs='$sdl_libs'
2141 avplay_select="rdft"
2142 avprobe_deps="avcodec avformat"
2143 avserver_deps="avformat fork !shared"
2144 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2145
2146 # documentation
2147 pod2man_deps="doc"
2148 texi2html_deps="doc"
2149
2150 # default parameters
2151
2152 logfile="config.log"
2153
2154 # installation paths
2155 prefix_default="/usr/local"
2156 bindir_default='${prefix}/bin'
2157 datadir_default='${prefix}/share/avconv'
2158 docdir_default='${prefix}/share/doc/libav'
2159 incdir_default='${prefix}/include'
2160 libdir_default='${prefix}/lib'
2161 mandir_default='${prefix}/share/man'
2162 shlibdir_default="$libdir_default"
2163
2164 # toolchain
2165 ar_default="ar"
2166 cc_default="gcc"
2167 host_cc_default="gcc"
2168 cp_f="cp -f"
2169 ln_s="ln -s -f"
2170 nm_default="nm -g"
2171 objformat="elf"
2172 pkg_config_default=pkg-config
2173 ranlib="ranlib"
2174 strip="strip"
2175 yasmexe="yasm"
2176
2177 nogas=":"
2178
2179 # machine
2180 arch_default=$(uname -m)
2181 cpu="generic"
2182
2183 # OS
2184 target_os_default=$(tolower $(uname -s))
2185 host_os=$target_os_default
2186
2187 # configurable options
2188 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2189
2190 enable asm
2191 enable debug
2192 enable doc
2193 enable optimizations
2194 enable safe_bitstream_reader
2195 enable static
2196 enable swscale_alpha
2197
2198 # By default, enable only those hwaccels that have no external dependencies.
2199 enable dxva2 vdpau
2200
2201 # build settings
2202 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2203 LIBPREF="lib"
2204 LIBSUF=".a"
2205 FULLNAME='$(NAME)$(BUILDSUF)'
2206 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2207 SLIBPREF="lib"
2208 SLIBSUF=".so"
2209 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2210 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2211 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2212 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2213 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2214 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2215
2216 asflags_filter=echo
2217 cflags_filter=echo
2218 ldflags_filter=echo
2219
2220 AS_C='-c'
2221 AS_O='-o $@'
2222 CC_C='-c'
2223 CC_E='-E -o $@'
2224 CC_O='-o $@'
2225 LD_O='-o $@'
2226 LD_LIB='-l%'
2227 LD_PATH='-L'
2228 HOSTCC_C='-c'
2229 HOSTCC_E='-E -o $@'
2230 HOSTCC_O='-o $@'
2231 HOSTLD_O='-o $@'
2232
2233 host_libs='-lm'
2234 host_cflags_filter=echo
2235 host_ldflags_filter=echo
2236
2237 target_path='$(CURDIR)'
2238
2239 # since the object filename is not given with the -MM flag, the compiler
2240 # is only able to print the basename, and we must add the path ourselves
2241 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2242 DEPFLAGS='-MM'
2243
2244 # find source path
2245 if test -f configure; then
2246     source_path=.
2247 else
2248     source_path=$(cd $(dirname "$0"); pwd)
2249     echo "$source_path" | grep -q '[[:blank:]]' &&
2250         die "Out of tree builds are impossible with whitespace in source path."
2251     test -e "$source_path/config.h" &&
2252         die "Out of tree builds are impossible with config.h in source dir."
2253 fi
2254
2255 for v in "$@"; do
2256     r=${v#*=}
2257     l=${v%"$r"}
2258     r=$(sh_quote "$r")
2259     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2260 done
2261
2262 find_things(){
2263     thing=$1
2264     pattern=$2
2265     file=$source_path/$3
2266     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2267 }
2268
2269 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2270 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2271 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2272 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2273 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2274 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2275 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2276 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2277 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2278 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2279 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2280
2281 ALL_COMPONENTS="
2282     $BSF_LIST
2283     $DECODER_LIST
2284     $DEMUXER_LIST
2285     $ENCODER_LIST
2286     $FILTER_LIST
2287     $HWACCEL_LIST
2288     $INDEV_LIST
2289     $MUXER_LIST
2290     $OUTDEV_LIST
2291     $PARSER_LIST
2292     $PROTOCOL_LIST
2293 "
2294
2295 for n in $COMPONENT_LIST; do
2296     v=$(toupper ${n%s})_LIST
2297     eval enable \$$v
2298     eval ${n}_if_any="\$$v"
2299 done
2300
2301 enable $ARCH_EXT_LIST
2302
2303 die_unknown(){
2304     echo "Unknown option \"$1\"."
2305     echo "See $0 --help for available options."
2306     exit 1
2307 }
2308
2309 print_3_columns() {
2310     cat | tr ' ' '\n' | sort | pr -r -3 -t
2311 }
2312
2313 show_list() {
2314     suffix=_$1
2315     shift
2316     echo $* | sed s/$suffix//g | print_3_columns
2317     exit 0
2318 }
2319
2320 rand_list(){
2321     IFS=', '
2322     set -- $*
2323     unset IFS
2324     for thing; do
2325         comp=${thing%:*}
2326         prob=${thing#$comp}
2327         prob=${prob#:}
2328         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2329         echo "prob ${prob:-0.5}"
2330         printf '%s\n' $comp
2331     done
2332 }
2333
2334 do_random(){
2335     action=$1
2336     shift
2337     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2338     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2339 }
2340
2341 for opt do
2342     optval="${opt#*=}"
2343     case "$opt" in
2344         --extra-ldflags=*)
2345             add_ldflags $optval
2346         ;;
2347         --extra-libs=*)
2348             add_extralibs $optval
2349         ;;
2350         --disable-devices)
2351             disable $INDEV_LIST $OUTDEV_LIST
2352         ;;
2353         --enable-debug=*)
2354             debuglevel="$optval"
2355         ;;
2356         --disable-programs)
2357             disable $PROGRAM_LIST
2358         ;;
2359         --disable-everything)
2360             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2361         ;;
2362         --disable-all)
2363             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2364             disable $LIBRARY_LIST $PROGRAM_LIST doc
2365         ;;
2366         --enable-random|--disable-random)
2367             action=${opt%%-random}
2368             do_random ${action#--} $COMPONENT_LIST
2369         ;;
2370         --enable-random=*|--disable-random=*)
2371             action=${opt%%-random=*}
2372             do_random ${action#--} $optval
2373         ;;
2374         --enable-*=*|--disable-*=*)
2375             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2376             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2377             eval list=\$$(toupper $thing)_LIST
2378             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2379             $action $(filter "$name" $list)
2380         ;;
2381         --enable-?*|--disable-?*)
2382             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2383             if is_in $option $COMPONENT_LIST; then
2384                 test $action = disable && action=unset
2385                 eval $action \$$(toupper ${option%s})_LIST
2386             elif is_in $option $CMDLINE_SELECT; then
2387                 $action $option
2388             else
2389                 die_unknown $opt
2390             fi
2391         ;;
2392         --list-*)
2393             NAME="${opt#--list-}"
2394             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2395             NAME=${NAME%s}
2396             eval show_list $NAME \$$(toupper $NAME)_LIST
2397         ;;
2398         --help|-h) show_help
2399         ;;
2400         *)
2401             optname="${opt%%=*}"
2402             optname="${optname#--}"
2403             optname=$(echo "$optname" | sed 's/-/_/g')
2404             if is_in $optname $CMDLINE_SET; then
2405                 eval $optname='$optval'
2406             elif is_in $optname $CMDLINE_APPEND; then
2407                 append $optname "$optval"
2408             else
2409                 die_unknown $opt
2410             fi
2411         ;;
2412     esac
2413 done
2414
2415 disabled logging && logfile=/dev/null
2416
2417 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2418 set >> $logfile
2419
2420 test -n "$cross_prefix" && enable cross_compile
2421
2422 if enabled cross_compile; then
2423     test -n "$arch" && test -n "$target_os" ||
2424         die "Must specify target arch and OS when cross-compiling"
2425 fi
2426
2427 ar_default="${cross_prefix}${ar_default}"
2428 cc_default="${cross_prefix}${cc_default}"
2429 nm_default="${cross_prefix}${nm_default}"
2430 pkg_config_default="${cross_prefix}${pkg_config_default}"
2431 ranlib="${cross_prefix}${ranlib}"
2432 strip="${cross_prefix}${strip}"
2433
2434 sysinclude_default="${sysroot}/usr/include"
2435
2436 case "$toolchain" in
2437     clang-asan)
2438         cc_default="clang"
2439         add_cflags  -fsanitize=address
2440         add_ldflags -fsanitize=address
2441     ;;
2442     clang-tsan)
2443         cc_default="clang"
2444         add_cflags  -fsanitize=thread -pie
2445         add_ldflags -fsanitize=thread -pie
2446     ;;
2447     clang-usan)
2448         cc_default="clang"
2449         add_cflags  -fsanitize=undefined -O1
2450         add_ldflags -fsanitize=undefined
2451     ;;
2452     gcc-asan)
2453         cc_default="gcc"
2454         add_cflags  -fsanitize=address
2455         add_ldflags -fsanitize=address
2456     ;;
2457     gcc-tsan)
2458         cc_default="gcc"
2459         add_cflags  -fsanitize=thread -pie -fPIC
2460         add_ldflags -fsanitize=thread -pie -fPIC
2461     ;;
2462     gcc-usan)
2463         cc_default="gcc"
2464         add_cflags  -fsanitize=undefined
2465         add_ldflags -fsanitize=undefined
2466     ;;
2467     valgrind-massif)
2468         target_exec_default="valgrind"
2469         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2470     ;;
2471     valgrind-memcheck)
2472         target_exec_default="valgrind"
2473         target_exec_args="--track-origins=yes --leak-check=full"
2474     ;;
2475     msvc)
2476         # Check whether the current MSVC version needs the C99 converter.
2477         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2478         # support enough of C99 to build libav. Default to the new
2479         # behaviour if the regexp was unable to match anything, since this
2480         # successfully parses the version number of existing supported
2481         # versions that require the converter (MSVC 2010 and 2012).
2482         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2483         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2484             cc_default="cl"
2485         else
2486             cc_default="c99wrap cl"
2487         fi
2488         ld_default="link"
2489         nm_default="dumpbin -symbols"
2490         ar_default="lib"
2491         target_os_default="win32"
2492         # Use a relative path for TMPDIR. This makes sure all the
2493         # ffconf temp files are written with a relative path, avoiding
2494         # issues with msys/win32 path conversion for MSVC parameters
2495         # such as -Fo<file> or -out:<file>.
2496         TMPDIR=.
2497     ;;
2498     icl)
2499         cc_default="icl"
2500         ld_default="xilink"
2501         nm_default="dumpbin -symbols"
2502         ar_default="xilib"
2503         target_os_default="win32"
2504         TMPDIR=.
2505     ;;
2506     gcov)
2507         add_cflags  -fprofile-arcs -ftest-coverage
2508         add_ldflags -fprofile-arcs -ftest-coverage
2509     ;;
2510     hardened)
2511         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2512         add_ldflags -Wl,-z,relro -Wl,-z,now
2513     ;;
2514     ?*)
2515         die "Unknown toolchain $toolchain"
2516     ;;
2517 esac
2518
2519 set_default arch cc pkg_config sysinclude target_exec target_os
2520 enabled cross_compile || host_cc_default=$cc
2521 set_default host_cc
2522
2523 if ! $pkg_config --version >/dev/null 2>&1; then
2524     warn "$pkg_config not found, library detection may fail."
2525     pkg_config=false
2526 fi
2527
2528 exesuf() {
2529     case $1 in
2530         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2531     esac
2532 }
2533
2534 EXESUF=$(exesuf $target_os)
2535 HOSTEXESUF=$(exesuf $host_os)
2536
2537 # set temporary file name
2538 : ${TMPDIR:=$TEMPDIR}
2539 : ${TMPDIR:=$TMP}
2540 : ${TMPDIR:=/tmp}
2541
2542 if ! check_cmd mktemp -u XXXXXX; then
2543     # simple replacement for missing mktemp
2544     # NOT SAFE FOR GENERAL USE
2545     mktemp(){
2546         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2547     }
2548 fi
2549
2550 tmpfile(){
2551     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2552         (set -C; exec > $tmp) 2>/dev/null ||
2553         die "Unable to create temporary file in $TMPDIR."
2554     append TMPFILES $tmp
2555     eval $1=$tmp
2556 }
2557
2558 trap 'rm -f -- $TMPFILES' EXIT
2559
2560 tmpfile TMPASM .asm
2561 tmpfile TMPC   .c
2562 tmpfile TMPE   $EXESUF
2563 tmpfile TMPH   .h
2564 tmpfile TMPO   .o
2565 tmpfile TMPS   .S
2566 tmpfile TMPSH  .sh
2567 tmpfile TMPV   .ver
2568
2569 unset -f mktemp
2570
2571 chmod +x $TMPE
2572
2573 # make sure we can execute files in $TMPDIR
2574 cat > $TMPSH 2>> $logfile <<EOF
2575 #! /bin/sh
2576 EOF
2577 chmod +x $TMPSH >> $logfile 2>&1
2578 if ! $TMPSH >> $logfile 2>&1; then
2579     cat <<EOF
2580 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2581 variable to another directory and make sure that it is not mounted noexec.
2582 EOF
2583     die "Sanity test failed."
2584 fi
2585
2586 ccc_flags(){
2587     for flag; do
2588         case $flag in
2589             -std=c99)           echo -c99                       ;;
2590             -mcpu=*)            echo -arch ${flag#*=}           ;;
2591             -mieee)             echo -ieee                      ;;
2592             -O*|-fast)          echo $flag                      ;;
2593             -fno-math-errno)    echo -assume nomath_errno       ;;
2594             -g)                 echo -g3                        ;;
2595             -Wall)              echo -msg_enable level2         ;;
2596             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2597             -Wl,*)              echo $flag                      ;;
2598             -f*|-W*)                                            ;;
2599             *)                  echo $flag                      ;;
2600         esac
2601    done
2602 }
2603
2604 cparser_flags(){
2605     for flag; do
2606         case $flag in
2607             -Wno-switch)             echo -Wno-switch-enum ;;
2608             -Wno-format-zero-length) ;;
2609             -Wdisabled-optimization) ;;
2610             -Wno-pointer-sign)       echo -Wno-other ;;
2611             *)                       echo $flag ;;
2612         esac
2613     done
2614 }
2615
2616 msvc_common_flags(){
2617     for flag; do
2618         case $flag in
2619             # In addition to specifying certain flags under the compiler
2620             # specific filters, they must be specified here as well or else the
2621             # generic catch all at the bottom will print the original flag.
2622             -Wall)                ;;
2623             -std=c99)             ;;
2624             # Common flags
2625             -fomit-frame-pointer) ;;
2626             -g)                   echo -Z7 ;;
2627             -fno-math-errno)      ;;
2628             -fno-common)          ;;
2629             -fno-signed-zeros)    ;;
2630             -fPIC)                ;;
2631             -mthumb)              ;;
2632             -march=*)             ;;
2633             -lz)                  echo zlib.lib ;;
2634             -lavifil32)           echo vfw32.lib ;;
2635             -lavicap32)           echo vfw32.lib user32.lib ;;
2636             -l*)                  echo ${flag#-l}.lib ;;
2637             *)                    echo $flag ;;
2638         esac
2639     done
2640 }
2641
2642 msvc_flags(){
2643     msvc_common_flags "$@"
2644     for flag; do
2645         case $flag in
2646             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2647                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2648                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2649                                        -wd4273 ;;
2650         esac
2651     done
2652 }
2653
2654 icl_flags(){
2655     msvc_common_flags "$@"
2656     for flag; do
2657         case $flag in
2658             # Despite what Intel's documentation says -Wall, which is supported
2659             # on Windows, does enable remarks so disable them here.
2660             -Wall)                echo $flag -Qdiag-disable:remark ;;
2661             -std=c99)             echo -Qstd=c99 ;;
2662         esac
2663     done
2664 }
2665
2666 pgi_flags(){
2667     for flag; do
2668         case $flag in
2669             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2670             -fomit-frame-pointer) echo -Mnoframe ;;
2671             -g)                   echo -gopt ;;
2672             *)                    echo $flag ;;
2673         esac
2674     done
2675 }
2676
2677 suncc_flags(){
2678     for flag; do
2679         case $flag in
2680             -march=*|-mcpu=*)
2681                 case "${flag#*=}" in
2682                     native)                   echo -xtarget=native       ;;
2683                     v9|niagara)               echo -xarch=sparc          ;;
2684                     ultrasparc)               echo -xarch=sparcvis       ;;
2685                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2686                     i586|pentium)             echo -xchip=pentium        ;;
2687                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2688                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2689                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2690                     pentium4*)          echo -xtarget=pentium4           ;;
2691                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2692                     *-sse3)             echo -xarch=sse3                 ;;
2693                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2694                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2695                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2696                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2697                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2698                     k8|opteron|athlon64|athlon-fx)
2699                                                echo -xarch=sse2a         ;;
2700                     athlon*)                   echo -xarch=pentium_proa  ;;
2701                 esac
2702                 ;;
2703             -std=c99)             echo -xc99              ;;
2704             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2705             -fPIC)                echo -KPIC -xcode=pic32 ;;
2706             -W*,*)                echo $flag              ;;
2707             -f*-*|-W*|-mimpure-text)                      ;;
2708             -shared)              echo -G                 ;;
2709             *)                    echo $flag              ;;
2710         esac
2711     done
2712 }
2713
2714 tms470_flags(){
2715     for flag; do
2716         case $flag in
2717             -march=*|-mcpu=*)
2718                 case "${flag#*=}" in
2719                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2720                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2721                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2722                     armv6*|arm11*)          echo -mv=6   ;;
2723                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2724                                             echo -mv=5e  ;;
2725                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2726                 esac
2727                 ;;
2728             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2729             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2730             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2731             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2732             -msoft-float)   echo --float_support=vfplib       ;;
2733             -O[0-3]|-mf=*)  echo $flag                        ;;
2734             -g)             echo -g -mn                       ;;
2735             -pds=*)         echo $flag                        ;;
2736             -D*|-I*)        echo $flag                        ;;
2737             --gcc|--abi=*)  echo $flag                        ;;
2738             -me)            echo $flag                        ;;
2739         esac
2740     done
2741 }
2742
2743 probe_cc(){
2744     pfx=$1
2745     _cc=$2
2746
2747     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2748     unset _ld_o _ldflags _ld_lib _ld_path
2749     unset _depflags _DEPCMD _DEPFLAGS
2750     _flags_filter=echo
2751
2752     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2753         _type=llvm_gcc
2754         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2755         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2756         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2757         _cflags_speed='-O3'
2758         _cflags_size='-Os'
2759     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2760         _type=gcc
2761         gcc_version=$($_cc --version | head -n1)
2762         gcc_basever=$($_cc -dumpversion)
2763         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2764         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2765         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2766         if ! $_cc -dumpversion | grep -q '^2\.'; then
2767             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2768         fi
2769         _cflags_speed='-O3'
2770         _cflags_size='-Os'
2771     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2772         _type=icc
2773         _ident=$($_cc --version | head -n1)
2774         _depflags='-MMD'
2775         _cflags_speed='-O3'
2776         _cflags_size='-Os'
2777         _cflags_noopt='-O1'
2778     elif $_cc -v 2>&1 | grep -q xlc; then
2779         _type=xlc
2780         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2781         _cflags_speed='-O5'
2782         _cflags_size='-O5 -qcompact'
2783     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2784         _type=ccc
2785         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2786         _DEPFLAGS='-M'
2787         _cflags_speed='-fast'
2788         _cflags_size='-O1'
2789         _flags_filter=ccc_flags
2790     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2791         test -d "$sysroot" || die "No valid sysroot specified."
2792         _type=armcc
2793         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2794         armcc_conf="$PWD/armcc.conf"
2795         $_cc --arm_linux_configure                 \
2796              --arm_linux_config_file="$armcc_conf" \
2797              --configure_sysroot="$sysroot"        \
2798              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2799              die "Error creating armcc configuration file."
2800         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2801         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2802         as_default="${cross_prefix}gcc"
2803         _depflags='-MMD'
2804         _cflags_speed='-O3'
2805         _cflags_size='-Os'
2806     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2807         _type=tms470
2808         _ident=$($_cc -version | head -n1 | tr -s ' ')
2809         _flags='--gcc --abi=eabi -me'
2810         _cc_e='-ppl -fe=$@'
2811         _cc_o='-fe=$@'
2812         _depflags='-ppa -ppd=$(@:.o=.d)'
2813         _cflags_speed='-O3 -mf=5'
2814         _cflags_size='-O3 -mf=2'
2815         _flags_filter=tms470_flags
2816     elif $_cc -v 2>&1 | grep -q clang; then
2817         _type=clang
2818         _ident=$($_cc --version | head -n1)
2819         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2820         _cflags_speed='-O3'
2821         _cflags_size='-Os'
2822     elif $_cc -V 2>&1 | grep -q Sun; then
2823         _type=suncc
2824         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2825         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2826         _DEPFLAGS='-xM1 -xc99'
2827         _ldflags='-std=c99'
2828         _cflags_speed='-O5'
2829         _cflags_size='-O5 -xspace'
2830         _flags_filter=suncc_flags
2831     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2832         _type=pathscale
2833         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2834         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2835         _cflags_speed='-O2'
2836         _cflags_size='-Os'
2837         _flags_filter='filter_out -Wdisabled-optimization'
2838     elif $_cc -v 2>&1 | grep -q Open64; then
2839         _type=open64
2840         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2841         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2842         _cflags_speed='-O2'
2843         _cflags_size='-Os'
2844         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2845     elif $_cc -V 2>&1 | grep -q Portland; then
2846         _type=pgi
2847         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2848         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2849         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2850         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2851         _cflags_noopt="-O1"
2852         _flags_filter=pgi_flags
2853     elif $_cc 2>&1 | grep -q Microsoft; then
2854         _type=msvc
2855         _ident=$($cc 2>&1 | head -n1)
2856         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2857         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2858         _cflags_speed="-O2"
2859         _cflags_size="-O1"
2860         if $_cc 2>&1 | grep -q Linker; then
2861             _ld_o='-out:$@'
2862         else
2863             _ld_o='-Fe$@'
2864         fi
2865         _cc_o='-Fo$@'
2866         _cc_e='-P -Fi$@'
2867         _flags_filter=msvc_flags
2868         _ld_lib='lib%.a'
2869         _ld_path='-libpath:'
2870         _flags='-nologo'
2871         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2872         if [ $pfx = hostcc ]; then
2873             append _cflags -Dsnprintf=_snprintf
2874         fi
2875     elif $_cc 2>&1 | grep -q Intel; then
2876         _type=icl
2877         _ident=$($cc 2>&1 | head -n1)
2878         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2879         # Not only is O3 broken on 13.x+ but it is slower on all previous
2880         # versions (tested) as well.
2881         _cflags_speed="-O2"
2882         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2883         if $_cc 2>&1 | grep -q Linker; then
2884             _ld_o='-out:$@'
2885         else
2886             _ld_o='-Fe$@'
2887         fi
2888         _cc_o='-Fo$@'
2889         _cc_e='-P'
2890         _flags_filter=icl_flags
2891         _ld_lib='lib%.a'
2892         _ld_path='-libpath:'
2893         # -Qdiag-error to make icl error when seeing certain unknown arguments
2894         _flags='-nologo -Qdiag-error:4044,10157'
2895         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2896         # with MSVC which enables it by default.
2897         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2898         if [ $pfx = hostcc ]; then
2899             append _cflags -Dsnprintf=_snprintf
2900         fi
2901     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2902         _type=cparser
2903         _ident=$($_cc --version | head -n1)
2904         _depflags='-MMD'
2905         _cflags_speed='-O4'
2906         _cflags_size='-O2'
2907         _flags_filter=cparser_flags
2908     fi
2909
2910     eval ${pfx}_type=\$_type
2911     eval ${pfx}_ident=\$_ident
2912 }
2913
2914 set_ccvars(){
2915     eval ${1}_C=\${_cc_c-\${${1}_C}}
2916     eval ${1}_E=\${_cc_e-\${${1}_E}}
2917     eval ${1}_O=\${_cc_o-\${${1}_O}}
2918
2919     if [ -n "$_depflags" ]; then
2920         eval ${1}_DEPFLAGS=\$_depflags
2921     else
2922         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2923         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2924         eval DEP${1}FLAGS=\$_flags
2925     fi
2926 }
2927
2928 probe_cc cc "$cc"
2929 cflags_filter=$_flags_filter
2930 cflags_speed=$_cflags_speed
2931 cflags_size=$_cflags_size
2932 cflags_noopt=$_cflags_noopt
2933 add_cflags $_flags $_cflags
2934 cc_ldflags=$_ldflags
2935 set_ccvars CC
2936
2937 probe_cc hostcc "$host_cc"
2938 host_cflags_filter=$_flags_filter
2939 add_host_cflags  $_flags $_cflags
2940 set_ccvars HOSTCC
2941
2942 test -n "$cc_type" && enable $cc_type ||
2943     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2944
2945 : ${as_default:=$cc}
2946 : ${dep_cc_default:=$cc}
2947 : ${ld_default:=$cc}
2948 : ${host_ld_default:=$host_cc}
2949 set_default ar as dep_cc ld host_ld
2950
2951 probe_cc as "$as"
2952 asflags_filter=$_flags_filter
2953 add_asflags $_flags $_cflags
2954 set_ccvars AS
2955
2956 probe_cc ld "$ld"
2957 ldflags_filter=$_flags_filter
2958 add_ldflags $_flags $_ldflags
2959 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2960 LD_O=${_ld_o-$LD_O}
2961 LD_LIB=${_ld_lib-$LD_LIB}
2962 LD_PATH=${_ld_path-$LD_PATH}
2963
2964 probe_cc hostld "$host_ld"
2965 host_ldflags_filter=$_flags_filter
2966 add_host_ldflags $_flags $_ldflags
2967 HOSTLD_O=${_ld_o-$HOSTLD_O}
2968
2969 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2970     probe_cc depcc "$dep_cc"
2971     CCDEP=${_DEPCMD:-$DEPCMD}
2972     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2973     DEPCCFLAGS=$_flags
2974 fi
2975
2976 if $ar 2>&1 | grep -q Microsoft; then
2977     arflags="-nologo"
2978     ar_o='-out:$@'
2979 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2980     arflags="rq"
2981     ar_o='$@'
2982 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2983     arflags='-Xany -r -c'
2984     ar_o='$@'
2985 else
2986     arflags="rc"
2987     ar_o='$@'
2988 fi
2989
2990 add_cflags $extra_cflags
2991 add_asflags $extra_cflags
2992
2993 if test -n "$sysroot"; then
2994     case "$cc_type" in
2995         gcc|llvm_gcc|clang)
2996             add_cppflags --sysroot="$sysroot"
2997             add_ldflags --sysroot="$sysroot"
2998         ;;
2999         tms470)
3000             add_cppflags -I"$sysinclude"
3001             add_ldflags  --sysroot="$sysroot"
3002         ;;
3003     esac
3004 fi
3005
3006 if test "$cpu" = host; then
3007     enabled cross_compile &&
3008         die "--cpu=host makes no sense when cross-compiling."
3009
3010     case "$cc_type" in
3011         gcc|llvm_gcc)
3012             check_native(){
3013                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3014                 sed -n "/cc1.*$1=/{
3015                             s/.*$1=\\([^ ]*\\).*/\\1/
3016                             p
3017                             q
3018                         }" $TMPE
3019             }
3020             cpu=$(check_native -march || check_native -mcpu)
3021         ;;
3022     esac
3023
3024     test "${cpu:-host}" = host &&
3025         die "--cpu=host not supported with compiler $cc"
3026 fi
3027
3028 # Deal with common $arch aliases
3029 case "$arch" in
3030     aarch64|arm64)
3031         arch="aarch64"
3032     ;;
3033     arm*)
3034         arch="arm"
3035     ;;
3036     mips*|IP*)
3037         arch="mips"
3038     ;;
3039     parisc*|hppa*)
3040         arch="parisc"
3041     ;;
3042     "Power Macintosh"|ppc*|powerpc*)
3043         arch="ppc"
3044     ;;
3045     s390|s390x)
3046         arch="s390"
3047     ;;
3048     sh4|sh)
3049         arch="sh4"
3050     ;;
3051     sun4u|sparc*)
3052         arch="sparc"
3053     ;;
3054     tilegx|tile-gx)
3055         arch="tilegx"
3056     ;;
3057     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3058         arch="x86"
3059     ;;
3060 esac
3061
3062 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3063 enable $arch
3064
3065 # Add processor-specific flags
3066 if enabled aarch64; then
3067
3068     case $cpu in
3069         armv*)
3070             cpuflags="-march=$cpu"
3071         ;;
3072         *)
3073             cpuflags="-mcpu=$cpu"
3074         ;;
3075     esac
3076
3077 elif enabled alpha; then
3078
3079     cpuflags="-mcpu=$cpu"
3080
3081 elif enabled arm; then
3082
3083     check_arm_arch() {
3084         check_cpp_condition stddef.h \
3085             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3086             $cpuflags
3087     }
3088
3089     probe_arm_arch() {
3090         if   check_arm_arch 4;        then echo armv4;
3091         elif check_arm_arch 4T;       then echo armv4t;
3092         elif check_arm_arch 5;        then echo armv5;
3093         elif check_arm_arch 5E;       then echo armv5e;
3094         elif check_arm_arch 5T;       then echo armv5t;
3095         elif check_arm_arch 5TE;      then echo armv5te;
3096         elif check_arm_arch 5TEJ;     then echo armv5te;
3097         elif check_arm_arch 6;        then echo armv6;
3098         elif check_arm_arch 6J;       then echo armv6j;
3099         elif check_arm_arch 6K;       then echo armv6k;
3100         elif check_arm_arch 6Z;       then echo armv6z;
3101         elif check_arm_arch 6ZK;      then echo armv6zk;
3102         elif check_arm_arch 6T2;      then echo armv6t2;
3103         elif check_arm_arch 7;        then echo armv7;
3104         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3105         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3106         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3107         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3108         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3109         fi
3110     }
3111
3112     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3113
3114     case $cpu in
3115         armv*)
3116             cpuflags="-march=$cpu"
3117             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3118         ;;
3119         *)
3120             cpuflags="-mcpu=$cpu"
3121             case $cpu in
3122                 cortex-a*)                               subarch=armv7a  ;;
3123                 cortex-r*)                               subarch=armv7r  ;;
3124                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3125                 arm11*)                                  subarch=armv6   ;;
3126                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3127                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3128                 *)                             subarch=$(probe_arm_arch) ;;
3129             esac
3130         ;;
3131     esac
3132
3133     case "$subarch" in
3134         armv5t*)    enable fast_clz                ;;
3135         armv[6-8]*) enable fast_clz fast_unaligned ;;
3136     esac
3137
3138 elif enabled avr32; then
3139
3140     case $cpu in
3141         ap7[02]0[0-2])
3142             subarch="avr32_ap"
3143             cpuflags="-mpart=$cpu"
3144         ;;
3145         ap)
3146             subarch="avr32_ap"
3147             cpuflags="-march=$cpu"
3148         ;;
3149         uc3[ab]*)
3150             subarch="avr32_uc"
3151             cpuflags="-mcpu=$cpu"
3152         ;;
3153         uc)
3154             subarch="avr32_uc"
3155             cpuflags="-march=$cpu"
3156         ;;
3157     esac
3158
3159 elif enabled bfin; then
3160
3161     cpuflags="-mcpu=$cpu"
3162
3163 elif enabled mips; then
3164
3165     cpuflags="-march=$cpu"
3166
3167 elif enabled ppc; then
3168
3169     disable ldbrx
3170
3171     case $(tolower $cpu) in
3172         601|ppc601|powerpc601)
3173             cpuflags="-mcpu=601"
3174             disable altivec
3175         ;;
3176         603*|ppc603*|powerpc603*)
3177             cpuflags="-mcpu=603"
3178             disable altivec
3179         ;;
3180         604*|ppc604*|powerpc604*)
3181             cpuflags="-mcpu=604"
3182             disable altivec
3183         ;;
3184         g3|75*|ppc75*|powerpc75*)
3185             cpuflags="-mcpu=750"
3186             disable altivec
3187         ;;
3188         g4|745*|ppc745*|powerpc745*)
3189             cpuflags="-mcpu=7450"
3190         ;;
3191         74*|ppc74*|powerpc74*)
3192             cpuflags="-mcpu=7400"
3193         ;;
3194         g5|970|ppc970|powerpc970)
3195             cpuflags="-mcpu=970"
3196         ;;
3197         power[3-7]*)
3198             cpuflags="-mcpu=$cpu"
3199         ;;
3200         cell)
3201             cpuflags="-mcpu=cell"
3202             enable ldbrx
3203         ;;
3204         e500mc)
3205             cpuflags="-mcpu=e500mc"
3206             disable altivec
3207         ;;
3208         e500v2)
3209             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3210             disable altivec
3211             disable dcbzl
3212         ;;
3213         e500)
3214             cpuflags="-mcpu=8540 -mhard-float"
3215             disable altivec
3216             disable dcbzl
3217         ;;
3218     esac
3219
3220 elif enabled sparc; then
3221
3222     case $cpu in
3223         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3224             cpuflags="-mcpu=$cpu"
3225         ;;
3226         ultrasparc*|niagara[234])
3227             cpuflags="-mcpu=$cpu"
3228         ;;
3229     esac
3230
3231 elif enabled x86; then
3232
3233     case $cpu in
3234         i[345]86|pentium)
3235             cpuflags="-march=$cpu"
3236             disable mmx
3237         ;;
3238         # targets that do NOT support nopl and conditional mov (cmov)
3239         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3240             cpuflags="-march=$cpu"
3241             disable i686
3242         ;;
3243         # targets that do support nopl and conditional mov (cmov)
3244         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3245             cpuflags="-march=$cpu"
3246             enable i686
3247             enable fast_cmov
3248         ;;
3249         # targets that do support conditional mov but on which it's slow
3250         pentium4|pentium4m|prescott|nocona)
3251             cpuflags="-march=$cpu"
3252             enable i686
3253             disable fast_cmov
3254         ;;
3255     esac
3256
3257 fi
3258
3259 if [ "$cpu" != generic ]; then
3260     add_cflags  $cpuflags
3261     add_asflags $cpuflags
3262 fi
3263
3264 # compiler sanity check
3265 check_exec <<EOF
3266 int main(void){ return 0; }
3267 EOF
3268 if test "$?" != 0; then
3269     echo "$cc is unable to create an executable file."
3270     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3271         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3272         echo "Only do this if you know what cross compiling means."
3273     fi
3274     die "C compiler test failed."
3275 fi
3276
3277 add_cppflags -D_ISOC99_SOURCE
3278 check_cflags -std=c99
3279 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3280 #include <stdlib.h>
3281 EOF
3282 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3283 #include <stdlib.h>
3284 EOF
3285
3286 add_host_cppflags -D_ISOC99_SOURCE
3287 check_host_cflags -std=c99
3288 check_host_cflags -Wall
3289 check_host_cflags -O3
3290
3291 check_64bit(){
3292     arch32=$1
3293     arch64=$2
3294     expr=$3
3295     check_code cc "" "int test[2*($expr) - 1]" &&
3296         subarch=$arch64 || subarch=$arch32
3297 }
3298
3299 case "$arch" in
3300     aarch64|alpha|ia64)
3301         spic=$shared
3302     ;;
3303     mips)
3304         check_64bit mips mips64 '_MIPS_SIM > 1'
3305         spic=$shared
3306     ;;
3307     parisc)
3308         check_64bit parisc parisc64 'sizeof(void *) > 4'
3309         spic=$shared
3310     ;;
3311     ppc)
3312         check_64bit ppc ppc64 'sizeof(void *) > 4'
3313         spic=$shared
3314     ;;
3315     s390)
3316         check_64bit s390 s390x 'sizeof(void *) > 4'
3317         spic=$shared
3318     ;;
3319     sparc)
3320         check_64bit sparc sparc64 'sizeof(void *) > 4'
3321         spic=$shared
3322     ;;
3323     x86)
3324         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3325         if test "$subarch" = "x86_64"; then
3326             spic=$shared
3327         fi
3328     ;;
3329 esac
3330
3331 enable $subarch
3332 enabled spic && enable_weak pic
3333
3334 # OS specific
3335 case $target_os in
3336     aix)
3337         SHFLAGS=-shared
3338         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3339         enabled shared && add_ldflags -Wl,-brtl
3340         ;;
3341     haiku)
3342         prefix_default="/boot/common"
3343         network_extralibs="-lnetwork"
3344         host_libs=
3345         ;;
3346     sunos)
3347         SHFLAGS='-shared -Wl,-h,$$(@F)'
3348         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3349         network_extralibs="-lsocket -lnsl"
3350         # When using suncc to build, the Solaris linker will mark
3351         # an executable with each instruction set encountered by
3352         # the Solaris assembler.  As our libraries contain their own
3353         # guards for processor-specific code, instead suppress
3354         # generation of the HWCAPS ELF section on Solaris x86 only.
3355         enabled_all suncc x86 &&
3356             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3357             add_ldflags -Wl,-M,mapfile
3358         nm_default='nm -P -g'
3359         ;;
3360     netbsd)
3361         disable symver
3362         oss_indev_extralibs="-lossaudio"
3363         oss_outdev_extralibs="-lossaudio"
3364         ;;
3365     openbsd|bitrig)
3366         disable symver
3367         SHFLAGS='-shared'
3368         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3369         SLIB_INSTALL_LINKS=
3370         oss_indev_extralibs="-lossaudio"
3371         oss_outdev_extralibs="-lossaudio"
3372         ;;
3373     dragonfly)
3374         disable symver
3375         ;;
3376     freebsd)
3377         ;;
3378     bsd/os)
3379         add_extralibs -lpoll -lgnugetopt
3380         ;;
3381     darwin)
3382         gas="gas-preprocessor.pl $cc"
3383         enabled ppc && add_asflags -force_cpusubtype_ALL
3384         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3385         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3386         add_ldflags -Wl,-dynamic,-search_paths_first
3387         SLIBSUF=".dylib"
3388         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3389         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3390         objformat="macho"
3391         enabled x86_64 && objformat="macho64"
3392         enabled_any pic shared ||
3393             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3394         ;;
3395     mingw32*)
3396         if test $target_os = "mingw32ce"; then
3397             disable network
3398         else
3399             target_os=mingw32
3400         fi
3401         LIBTARGET=i386
3402         if enabled x86_64; then
3403             LIBTARGET="i386:x86-64"
3404         elif enabled arm; then
3405             LIBTARGET=arm-wince
3406         fi
3407         check_ldflags -Wl,--nxcompat
3408         check_ldflags -Wl,--dynamicbase
3409         shlibdir_default="$bindir_default"
3410         SLIBPREF=""
3411         SLIBSUF=".dll"
3412         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3413         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3414         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3415         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3416         SLIB_INSTALL_LINKS=
3417         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3418         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3419         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3420         objformat="win32"
3421         dlltool="${cross_prefix}dlltool"
3422         ranlib=:
3423         enable dos_paths
3424         ;;
3425     win32|win64)
3426         disable symver
3427         if enabled shared; then
3428             # Link to the import library instead of the normal static library
3429             # for shared libs.
3430             LD_LIB='%.lib'
3431             # Cannot build both shared and static libs with MSVC or icl.
3432             disable static
3433         fi
3434         shlibdir_default="$bindir_default"
3435         SLIBPREF=""
3436         SLIBSUF=".dll"
3437         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3438         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3439         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3440         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3441         SLIB_INSTALL_LINKS=
3442         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3443         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3444         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3445         objformat="win32"
3446         ranlib=:
3447         enable dos_paths
3448         ;;
3449     cygwin*)
3450         target_os=cygwin
3451         shlibdir_default="$bindir_default"
3452         SLIBPREF="cyg"
3453         SLIBSUF=".dll"
3454         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3455         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3456         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3457         SLIB_INSTALL_LINKS=
3458         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3459         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3460         objformat="win32"
3461         enable dos_paths
3462         ;;
3463     *-dos|freedos|opendos)
3464         network_extralibs="-lsocket"
3465         objformat="coff"
3466         enable dos_paths
3467         add_cppflags -U__STRICT_ANSI__
3468         ;;
3469     linux)
3470         enable dv1394
3471         ;;
3472     irix*)
3473         target_os=irix
3474         ranlib="echo ignoring ranlib"
3475         ;;
3476     os/2*)
3477         ln_s="cp -f"
3478         objformat="aout"
3479         add_cppflags -D_GNU_SOURCE
3480         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3481         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3482         LIBSUF="_s.a"
3483         SLIBPREF=""
3484         SLIBSUF=".dll"
3485         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3486         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3487         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3488             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3489             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3490             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3491             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3492             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3493         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3494             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3495         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3496         enable dos_paths
3497         ;;
3498     gnu/kfreebsd)
3499         add_cppflags -D_BSD_SOURCE
3500         ;;
3501     gnu)
3502         ;;
3503     qnx)
3504         add_cppflags -D_QNX_SOURCE
3505         network_extralibs="-lsocket"
3506         ;;
3507     symbian)
3508         SLIBSUF=".dll"
3509         enable dos_paths
3510         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3511         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3512         add_ldflags -Wl,--target1-abs,--no-undefined \
3513                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3514                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3515         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3516                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3517                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3518         ;;
3519     osf1)
3520         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3521         ;;
3522     minix)
3523         ;;
3524     plan9)
3525         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3526                      -D_REENTRANT_SOURCE        \
3527                      -D_RESEARCH_SOURCE         \
3528                      -DFD_SETSIZE=96            \
3529                      -DHAVE_SOCK_OPTS
3530         add_compat strtod.o strtod=avpriv_strtod
3531         network_extralibs='-lbsd'
3532         exeobjs=compat/plan9/main.o
3533         disable avserver
3534         cp_f='cp'
3535         ;;
3536     none)
3537         ;;
3538     *)
3539         die "Unknown OS '$target_os'."
3540         ;;
3541 esac
3542
3543 # determine libc flavour
3544
3545 probe_libc(){
3546     pfx=$1
3547     pfx_no_=${pfx%_}
3548     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3549     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3550         eval ${pfx}libc_type=uclibc
3551         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3552     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3553         eval ${pfx}libc_type=glibc
3554         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3555     # MinGW headers can be installed on Cygwin, so check for newlib first.
3556     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3557         eval ${pfx}libc_type=newlib
3558         add_${pfx}cppflags -U__STRICT_ANSI__
3559     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3560     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3561         eval ${pfx}libc_type=mingw64
3562         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3563         eval test \$${pfx_no_}cc_type = "gcc" &&
3564             add_${pfx}cppflags -D__printf__=__gnu_printf__
3565     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3566          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3567         eval ${pfx}libc_type=mingw32
3568         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3569             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3570             die "ERROR: MinGW32 runtime version must be >= 3.15."
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 crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3575         eval ${pfx}libc_type=msvcrt
3576         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3577         # 0x601 by default unless something else is set by the user.
3578         # This can easily lead to us detecting functions only present
3579         # in such new versions and producing binaries requiring windows 7.0.
3580         # Therefore explicitly set the default to XP unless the user has
3581         # set something else on the command line.
3582         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3583             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3584     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3585         eval ${pfx}libc_type=klibc
3586     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3587         eval ${pfx}libc_type=bionic
3588     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3589         eval ${pfx}libc_type=solaris
3590         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3591     fi
3592 }
3593
3594 probe_libc
3595 test -n "$libc_type" && enable libc_$libc_type
3596 probe_libc host_
3597 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3598
3599 case $libc_type in
3600     bionic)
3601         add_compat strtod.o strtod=avpriv_strtod
3602         ;;
3603     msvcrt)
3604         add_compat strtod.o strtod=avpriv_strtod
3605         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3606                                      _snprintf=avpriv_snprintf  \
3607                                      vsnprintf=avpriv_vsnprintf
3608         ;;
3609 esac
3610
3611 # hacks for compiler/libc/os combinations
3612
3613 if enabled_all tms470 libc_glibc; then
3614     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3615     add_cppflags -D__USER_LABEL_PREFIX__=
3616     add_cppflags -D__builtin_memset=memset
3617     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3618     add_cflags   -pds=48    # incompatible redefinition of macro
3619 fi
3620
3621 if enabled_all ccc libc_glibc; then
3622     add_ldflags -Wl,-z,now  # calls to libots crash without this
3623 fi
3624
3625 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3626     add_cppflags '-I\$(SRC_PATH)/compat/float'
3627
3628 esc(){
3629     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3630 }
3631
3632 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3633
3634 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3635
3636 set_default $PATHS_LIST
3637 set_default nm
3638
3639 # we need to build at least one lib type
3640 if ! enabled_any static shared; then
3641     cat <<EOF
3642 At least one library type must be built.
3643 Specify --enable-static to build the static libraries or --enable-shared to
3644 build the shared libraries as well. To only build the shared libraries specify
3645 --disable-static in addition to --enable-shared.
3646 EOF
3647     exit 1;
3648 fi
3649
3650 die_license_disabled() {
3651     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3652 }
3653
3654 die_license_disabled gpl libcdio
3655 die_license_disabled gpl libx264
3656 die_license_disabled gpl libx265
3657 die_license_disabled gpl libxavs
3658 die_license_disabled gpl libxvid
3659 die_license_disabled gpl x11grab
3660
3661 die_license_disabled nonfree libfaac
3662 die_license_disabled nonfree libfdk_aac
3663 die_license_disabled nonfree openssl
3664
3665 die_license_disabled version3 libopencore_amrnb
3666 die_license_disabled version3 libopencore_amrwb
3667 die_license_disabled version3 libvo_aacenc
3668 die_license_disabled version3 libvo_amrwbenc
3669
3670 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3671
3672 disabled optimizations || check_cflags -fomit-frame-pointer
3673
3674 enable_weak_pic() {
3675     disabled pic && return
3676     enable pic
3677     add_cppflags -DPIC
3678     case "$target_os" in
3679     mingw*|cygwin*)
3680         ;;
3681     *)
3682         add_cflags -fPIC
3683         ;;
3684     esac
3685     add_asflags  -fPIC
3686 }
3687
3688 enabled pic && enable_weak_pic
3689
3690 check_cc <<EOF || die "Symbol mangling check failed."
3691 int ff_extern;
3692 EOF
3693 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3694 extern_prefix=${sym%%ff_extern*}
3695
3696 check_cc <<EOF && enable_weak inline_asm
3697 void foo(void) { __asm__ volatile ("" ::); }
3698 EOF
3699
3700 _restrict=
3701 for restrict_keyword in restrict __restrict__ __restrict; do
3702     check_cc <<EOF && _restrict=$restrict_keyword && break
3703 void foo(char * $restrict_keyword p);
3704 EOF
3705 done
3706
3707 check_cc <<EOF && enable pragma_deprecated
3708 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3709 EOF
3710
3711 check_cc <<EOF && enable attribute_packed
3712 struct { int x; } __attribute__((packed)) x;
3713 EOF
3714
3715 check_cc <<EOF && enable attribute_may_alias
3716 union { int x; } __attribute__((may_alias)) x;
3717 EOF
3718
3719 check_cc <<EOF || die "endian test failed"
3720 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3721 EOF
3722 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3723
3724 check_inline_asm inline_asm_labels '"1:\n"'
3725
3726 if enabled aarch64; then
3727     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3728     # internal assembler in clang 3.3 does not support this instruction
3729     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3730     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3731
3732     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3733
3734 elif enabled alpha; then
3735
3736     check_cflags -mieee
3737
3738 elif enabled arm; then
3739
3740     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3741     enabled thumb && check_cflags -mthumb || check_cflags -marm
3742     nogas=die
3743
3744     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3745         enable vfp_args
3746     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3747         case "${cross_prefix:-$cc}" in
3748             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3749             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3750 __asm__ (".eabi_attribute 28, 1");
3751 int main(void) { return 0; }
3752 EOF
3753         esac
3754         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3755     fi
3756
3757     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3758     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3759     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3760     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3761     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3762     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3763
3764     [ $target_os = linux ] ||
3765         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3766             $ARCH_EXT_LIST_ARM
3767
3768     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3769
3770     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3771
3772 elif enabled mips; then
3773
3774     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3775
3776 elif enabled parisc; then
3777
3778     if enabled gcc; then
3779         case $($cc -dumpversion) in
3780             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3781         esac
3782     fi
3783
3784 elif enabled ppc; then
3785
3786     enable local_aligned_8 local_aligned_16
3787
3788     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3789     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3790     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3791     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3792
3793     # AltiVec flags: The FSF version of GCC differs from the Apple version
3794     if enabled altivec; then
3795         nogas=warn
3796         check_cflags -maltivec -mabi=altivec &&
3797         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3798         check_cflags -faltivec
3799
3800         # check if our compiler supports Motorola AltiVec C API
3801         check_cc <<EOF || disable altivec
3802 $inc_altivec_h
3803 int main(void) {
3804     vector signed int v1 = (vector signed int) { 0 };
3805     vector signed int v2 = (vector signed int) { 1 };
3806     v1 = vec_add(v1, v2);
3807     return 0;
3808 }
3809 EOF
3810
3811         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3812     fi
3813
3814 elif enabled x86; then
3815
3816     check_builtin rdtsc    intrin.h   "__rdtsc()"
3817     check_builtin mm_empty mmintrin.h "_mm_empty()"
3818
3819     enable local_aligned_8 local_aligned_16
3820
3821     # check whether EBP is available on x86
3822     # As 'i' is stored on the stack, this program will crash
3823     # if the base pointer is used to access it because the
3824     # base pointer is cleared in the inline assembly code.
3825     check_exec_crash <<EOF && enable ebp_available
3826 volatile int i=0;
3827 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3828 return i;
3829 EOF
3830
3831     # check whether EBX is available on x86
3832     check_inline_asm ebx_available '""::"b"(0)' &&
3833         check_inline_asm ebx_available '"":::"%ebx"'
3834
3835     # check whether xmm clobbers are supported
3836     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3837
3838     # check whether binutils is new enough to compile SSSE3/MMXEXT
3839     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3840     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3841
3842     if ! disabled_any asm mmx yasm; then
3843         if check_cmd $yasmexe --version; then
3844             enabled x86_64 && yasm_extra="-m amd64"
3845             yasm_debug="-g dwarf2"
3846         elif check_cmd nasm -v; then
3847             yasmexe=nasm
3848             yasm_debug="-g -F dwarf"
3849             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3850         fi
3851
3852         YASMFLAGS="-f $objformat $yasm_extra"
3853         enabled pic               && append YASMFLAGS "-DPIC"
3854         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3855         case "$objformat" in
3856             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3857         esac
3858
3859         check_yasm "movbe ecx, [5]" && enable yasm ||
3860             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3861         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3862         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3863         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3864         check_yasm "CPU amdnop" || disable cpunop
3865     fi
3866
3867     case "$cpu" in
3868         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3869             disable fast_clz
3870         ;;
3871     esac
3872
3873 fi
3874
3875 if enabled asm; then
3876     as=${gas:=$as}
3877     check_as <<EOF && enable gnu_as || \
3878         $nogas "GNU assembler not found, install gas-preprocessor"
3879 .macro m n
3880 \n: .int 0
3881 .endm
3882 m x
3883 EOF
3884 fi
3885
3886 check_ldflags -Wl,--as-needed
3887
3888 if check_func dlopen; then
3889     ldl=
3890 elif check_func dlopen -ldl; then
3891     ldl=-ldl
3892 fi
3893
3894 if ! disabled network; then
3895     check_func getaddrinfo $network_extralibs
3896     check_func getservbyport $network_extralibs
3897     check_func inet_aton $network_extralibs
3898
3899     check_type netdb.h "struct addrinfo"
3900     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3901     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3902     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3903     check_type poll.h "struct pollfd"
3904     check_type netinet/sctp.h "struct sctp_event_subscribe"
3905     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3906     check_type netinet/in.h "struct sockaddr_in6"
3907     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3908     check_type "sys/types.h sys/socket.h" socklen_t
3909
3910     # Prefer arpa/inet.h over winsock2
3911     if check_header arpa/inet.h ; then
3912         check_func closesocket
3913     elif check_header winsock2.h ; then
3914         check_func_headers winsock2.h closesocket -lws2 &&
3915             network_extralibs="-lws2" ||
3916         { check_func_headers winsock2.h closesocket -lws2_32 &&
3917             network_extralibs="-lws2_32"; } || disable winsock2_h network
3918         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3919
3920         check_type ws2tcpip.h socklen_t
3921         check_type ws2tcpip.h "struct addrinfo"
3922         check_type ws2tcpip.h "struct group_source_req"
3923         check_type ws2tcpip.h "struct ip_mreq_source"
3924         check_type ws2tcpip.h "struct ipv6_mreq"
3925         check_type winsock2.h "struct pollfd"
3926         check_struct winsock2.h "struct sockaddr" sa_len
3927         check_type ws2tcpip.h "struct sockaddr_in6"
3928         check_type ws2tcpip.h "struct sockaddr_storage"
3929     else
3930         disable network
3931     fi
3932 fi
3933
3934 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3935 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3936 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3937 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3938
3939 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3940 check_func  ${malloc_prefix}memalign            && enable memalign
3941 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3942
3943 check_func  fcntl
3944 check_func  fork
3945 check_func  gethrtime
3946 check_func  getopt
3947 check_func  getrusage
3948 check_func  gettimeofday
3949 check_func  isatty
3950 check_func  localtime_r
3951 check_func  mach_absolute_time
3952 check_func  mkstemp
3953 check_func  mmap
3954 check_func  mprotect
3955 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3956 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3957 check_func  sched_getaffinity
3958 check_func  setrlimit
3959 check_func  strerror_r
3960 check_func  strptime
3961 check_func  sysconf
3962 check_func  sysctl
3963 check_func  usleep
3964
3965 check_func_headers io.h setmode
3966 check_func_headers stdlib.h getenv
3967
3968 check_func_headers windows.h CoTaskMemFree -lole32
3969 check_func_headers windows.h GetProcessAffinityMask
3970 check_func_headers windows.h GetProcessTimes
3971 check_func_headers windows.h GetSystemTimeAsFileTime
3972 check_func_headers windows.h MapViewOfFile
3973 check_func_headers windows.h SetConsoleTextAttribute
3974 check_func_headers windows.h Sleep
3975 check_func_headers windows.h VirtualAlloc
3976
3977 check_header direct.h
3978 check_header dlfcn.h
3979 check_header dxva.h
3980 check_header dxva2api.h
3981 check_header io.h
3982 check_header mach/mach_time.h
3983 check_header malloc.h
3984 check_header poll.h
3985 check_header sys/mman.h
3986 check_header sys/param.h
3987 check_header sys/resource.h
3988 check_header sys/select.h
3989 check_header sys/time.h
3990 check_header sys/un.h
3991 check_header unistd.h
3992 check_header vdpau/vdpau.h
3993 check_header vdpau/vdpau_x11.h
3994 check_header VideoDecodeAcceleration/VDADecoder.h
3995 check_header windows.h
3996 check_header X11/extensions/XvMClib.h
3997
3998 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3999 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4000 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4001
4002 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4003
4004 if ! disabled w32threads && ! enabled pthreads; then
4005     check_func_headers "windows.h process.h" _beginthreadex &&
4006         enable w32threads || disable w32threads
4007 fi
4008
4009 # check for some common methods of building with pthread support
4010 # do this before the optional library checks as some of them require pthreads
4011 if ! disabled pthreads && ! enabled w32threads; then
4012     enable pthreads
4013     if check_func pthread_join -pthread; then
4014         add_cflags -pthread
4015         add_extralibs -pthread
4016     elif check_func pthread_join -pthreads; then
4017         add_cflags -pthreads
4018         add_extralibs -pthreads
4019     elif check_func pthread_join -lpthreadGC2; then
4020         add_extralibs -lpthreadGC2
4021     elif check_lib pthread.h pthread_join -lpthread; then
4022         :
4023     elif ! check_func pthread_join; then
4024         disable pthreads
4025     fi
4026 fi
4027
4028 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4029 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4030
4031 check_lib math.h sin -lm && LIBM="-lm"
4032 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4033
4034 atan2f_args=2
4035 ldexpf_args=2
4036 powf_args=2
4037
4038 for func in $MATH_FUNCS; do
4039     eval check_mathfunc $func \${${func}_args:-1}
4040 done
4041
4042 # these are off by default, so fail if requested and not available
4043 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4044                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4045                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4046 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4047 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4048 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4049 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4050 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4051 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4052 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType