dsputil: Move Bink-specific add_pixels8 to binkdsp
[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     rangecoder
1555     riffdec
1556     riffenc
1557     rtpdec
1558     rtpenc_chain
1559     sinewin
1560     tpeldsp
1561     videodsp
1562     vp3dsp
1563 "
1564
1565 CMDLINE_SELECT="
1566     $ARCH_EXT_LIST
1567     $CONFIG_LIST
1568     $HAVE_LIST_CMDLINE
1569     $THREADS_LIST
1570     asm
1571     cross_compile
1572     debug
1573     extra_warnings
1574     logging
1575     lto
1576     optimizations
1577 "
1578
1579 PATHS_LIST="
1580     bindir
1581     datadir
1582     docdir
1583     incdir
1584     libdir
1585     mandir
1586     prefix
1587     shlibdir
1588 "
1589
1590 CMDLINE_SET="
1591     $PATHS_LIST
1592     ar
1593     arch
1594     as
1595     build_suffix
1596     cc
1597     cpu
1598     cross_prefix
1599     dep_cc
1600     extra_version
1601     host_cc
1602     host_cflags
1603     host_ld
1604     host_ldflags
1605     host_libs
1606     host_os
1607     ld
1608     logfile
1609     malloc_prefix
1610     nm
1611     optflags
1612     pkg_config
1613     pkg_config_flags
1614     random_seed
1615     samples
1616     sysinclude
1617     sysroot
1618     target_exec
1619     target_os
1620     target_path
1621     target_samples
1622     toolchain
1623 "
1624
1625 CMDLINE_APPEND="
1626     extra_cflags
1627     host_cppflags
1628 "
1629
1630 # code dependency declarations
1631
1632 # architecture extensions
1633
1634 armv5te_deps="arm"
1635 armv6_deps="arm"
1636 armv6t2_deps="arm"
1637 armv8_deps="aarch64"
1638 neon_deps_any="aarch64 arm"
1639 vfp_deps_any="aarch64 arm"
1640 vfpv3_deps="vfp"
1641
1642 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1643
1644 altivec_deps="ppc"
1645 ppc4xx_deps="ppc"
1646
1647 cpunop_deps="i686"
1648 x86_64_select="i686"
1649 x86_64_suggest="fast_cmov"
1650
1651 amd3dnow_deps="mmx"
1652 amd3dnowext_deps="amd3dnow"
1653 i686_deps="x86"
1654 mmx_deps="x86"
1655 mmxext_deps="mmx"
1656 sse_deps="mmxext"
1657 sse2_deps="sse"
1658 sse3_deps="sse2"
1659 ssse3_deps="sse3"
1660 sse4_deps="ssse3"
1661 sse42_deps="sse4"
1662 avx_deps="sse42"
1663 xop_deps="avx"
1664 fma3_deps="avx"
1665 fma4_deps="avx"
1666 avx2_deps="avx"
1667
1668 mmx_external_deps="yasm"
1669 mmx_inline_deps="inline_asm"
1670 mmx_suggest="mmx_external mmx_inline"
1671
1672 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1673     eval dep=\$${ext}_deps
1674     eval ${ext}_external_deps='"${dep}_external"'
1675     eval ${ext}_inline_deps='"${dep}_inline"'
1676     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1677 done
1678
1679 aligned_stack_if_any="aarch64 ppc x86"
1680 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1681 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1682 fast_unaligned_if_any="aarch64 ppc x86"
1683
1684 need_memalign="altivec neon sse"
1685
1686 # system capabilities
1687 log2_deps="!libc_msvcrt"
1688
1689 symver_if_any="symver_asm_label symver_gnu_asm"
1690
1691 # threading support
1692 atomics_gcc_if="sync_val_compare_and_swap"
1693 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1694 atomics_win32_if="MemoryBarrier"
1695 atomics_native_if_any="$ATOMICS_LIST"
1696 w32threads_deps="atomics_native"
1697 threads_if_any="$THREADS_LIST"
1698
1699 # subsystems
1700 dct_select="rdft"
1701 error_resilience_select="dsputil"
1702 mdct_select="fft"
1703 rdft_select="fft"
1704 mpegaudio_select="mpegaudiodsp"
1705 mpegaudiodsp_select="dct"
1706 mpegvideo_select="dsputil hpeldsp videodsp"
1707 mpegvideoenc_select="dsputil mpegvideo"
1708
1709 # decoders / encoders
1710 aac_decoder_select="mdct sinewin"
1711 aac_encoder_select="audio_frame_queue mdct sinewin"
1712 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1713 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1714 ac3_encoder_select="mdct ac3dsp dsputil"
1715 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1716 aic_decoder_select="dsputil golomb"
1717 alac_encoder_select="lpc"
1718 als_decoder_select="dsputil"
1719 amrnb_decoder_select="lsp"
1720 amrwb_decoder_select="lsp"
1721 amv_decoder_select="sp5x_decoder"
1722 ape_decoder_select="dsputil"
1723 asv1_decoder_select="dsputil"
1724 asv1_encoder_select="dsputil"
1725 asv2_decoder_select="dsputil"
1726 asv2_encoder_select="dsputil"
1727 atrac1_decoder_select="mdct sinewin"
1728 atrac3_decoder_select="mdct"
1729 atrac3p_decoder_select="mdct sinewin"
1730 bink_decoder_select="dsputil hpeldsp"
1731 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1732 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1733 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1734 cllc_decoder_select="dsputil"
1735 comfortnoise_encoder_select="lpc"
1736 cook_decoder_select="dsputil mdct sinewin"
1737 cscd_decoder_select="lzo"
1738 cscd_decoder_suggest="zlib"
1739 dca_decoder_select="mdct"
1740 dnxhd_decoder_select="dsputil"
1741 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1742 dvvideo_decoder_select="dsputil"
1743 dvvideo_encoder_select="dsputil"
1744 dxa_decoder_deps="zlib"
1745 eac3_decoder_select="ac3_decoder"
1746 eac3_encoder_select="ac3_encoder"
1747 eamad_decoder_select="aandcttables dsputil mpegvideo"
1748 eatgq_decoder_select="aandcttables dsputil"
1749 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
1750 exr_decoder_deps="zlib"
1751 ffv1_decoder_select="golomb rangecoder"
1752 ffv1_encoder_select="rangecoder"
1753 ffvhuff_decoder_select="huffyuv_decoder"
1754 ffvhuff_encoder_select="huffyuv_encoder"
1755 fic_decoder_select="golomb"
1756 flac_decoder_select="golomb"
1757 flac_encoder_select="dsputil golomb lpc"
1758 flashsv_decoder_deps="zlib"
1759 flashsv_encoder_deps="zlib"
1760 flashsv2_decoder_deps="zlib"
1761 flv_decoder_select="h263_decoder"
1762 flv_encoder_select="h263_encoder"
1763 fourxm_decoder_select="dsputil"
1764 fraps_decoder_select="dsputil huffman"
1765 g2m_decoder_deps="zlib"
1766 g2m_decoder_select="dsputil"
1767 h261_decoder_select="error_resilience mpegvideo"
1768 h261_encoder_select="aandcttables mpegvideoenc"
1769 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1770 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1771 h263i_decoder_select="h263_decoder"
1772 h263p_encoder_select="h263_encoder"
1773 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1774 h264_decoder_suggest="error_resilience"
1775 hevc_decoder_select="cabac dsputil golomb videodsp"
1776 huffyuv_decoder_select="dsputil huffyuvdsp"
1777 huffyuv_encoder_select="dsputil huffman huffyuvencdsp"
1778 iac_decoder_select="imc_decoder"
1779 imc_decoder_select="dsputil fft mdct sinewin"
1780 indeo3_decoder_select="hpeldsp"
1781 interplay_video_decoder_select="hpeldsp"
1782 jpegls_decoder_select="golomb mjpeg_decoder"
1783 jpegls_encoder_select="golomb"
1784 jv_decoder_select="dsputil"
1785 lagarith_decoder_select="huffyuvdsp"
1786 ljpeg_encoder_select="aandcttables mpegvideoenc"
1787 loco_decoder_select="golomb"
1788 mdec_decoder_select="dsputil error_resilience mpegvideo"
1789 metasound_decoder_select="lsp mdct sinewin"
1790 mimic_decoder_select="dsputil hpeldsp"
1791 mjpeg_decoder_select="dsputil hpeldsp"
1792 mjpeg_encoder_select="aandcttables mpegvideoenc"
1793 mjpegb_decoder_select="mjpeg_decoder"
1794 mlp_decoder_select="mlp_parser"
1795 motionpixels_decoder_select="dsputil"
1796 mp1_decoder_select="mpegaudio"
1797 mp1float_decoder_select="mpegaudio"
1798 mp2_decoder_select="mpegaudio"
1799 mp2float_decoder_select="mpegaudio"
1800 mp3_decoder_select="mpegaudio"
1801 mp3adu_decoder_select="mpegaudio"
1802 mp3adufloat_decoder_select="mpegaudio"
1803 mp3float_decoder_select="mpegaudio"
1804 mp3on4_decoder_select="mpegaudio"
1805 mp3on4float_decoder_select="mpegaudio"
1806 mpc7_decoder_select="dsputil mpegaudiodsp"
1807 mpc8_decoder_select="mpegaudiodsp"
1808 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1809 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1810 mpeg1video_decoder_select="error_resilience mpegvideo"
1811 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1812 mpeg2video_decoder_select="error_resilience mpegvideo"
1813 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1814 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1815 mpeg4_encoder_select="h263_encoder"
1816 msmpeg4v1_decoder_select="h263_decoder"
1817 msmpeg4v2_decoder_select="h263_decoder"
1818 msmpeg4v2_encoder_select="h263_encoder"
1819 msmpeg4v3_decoder_select="h263_decoder"
1820 msmpeg4v3_encoder_select="h263_encoder"
1821 mss2_decoder_select="error_resilience vc1_decoder"
1822 mxpeg_decoder_select="mjpeg_decoder"
1823 nellymoser_decoder_select="mdct sinewin"
1824 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1825 nuv_decoder_select="dsputil lzo"
1826 on2avc_decoder_select="mdct"
1827 opus_decoder_deps="avresample"
1828 png_decoder_deps="zlib"
1829 png_encoder_deps="zlib"
1830 png_encoder_select="huffyuvencdsp"
1831 prores_decoder_select="dsputil"
1832 prores_encoder_select="dsputil"
1833 qcelp_decoder_select="lsp"
1834 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1835 ra_144_encoder_select="audio_frame_queue lpc"
1836 ralf_decoder_select="golomb"
1837 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1838 rv10_encoder_select="h263_encoder"
1839 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1840 rv20_encoder_select="h263_encoder"
1841 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1842 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1843 shorten_decoder_select="golomb"
1844 sipr_decoder_select="lsp"
1845 sp5x_decoder_select="mjpeg_decoder"
1846 svq1_decoder_select="hpeldsp"
1847 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1848 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1849 svq3_decoder_suggest="zlib"
1850 tak_decoder_select="dsputil"
1851 theora_decoder_select="vp3_decoder"
1852 thp_decoder_select="mjpeg_decoder"
1853 tiff_decoder_suggest="zlib"
1854 tiff_encoder_suggest="zlib"
1855 truehd_decoder_select="mlp_decoder"
1856 truemotion2_decoder_select="dsputil"
1857 truespeech_decoder_select="dsputil"
1858 tscc_decoder_deps="zlib"
1859 twinvq_decoder_select="mdct lsp sinewin"
1860 utvideo_decoder_select="dsputil"
1861 utvideo_encoder_select="dsputil huffman huffyuvencdsp"
1862 vble_decoder_select="huffyuvdsp"
1863 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1864 vc1image_decoder_select="vc1_decoder"
1865 vorbis_decoder_select="mdct"
1866 vorbis_encoder_select="mdct"
1867 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1868 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1869 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1870 vp6a_decoder_select="vp6_decoder"
1871 vp6f_decoder_select="vp6_decoder"
1872 vp7_decoder_select="h264pred videodsp"
1873 vp8_decoder_select="h264pred videodsp"
1874 vp9_decoder_select="videodsp"
1875 webp_decoder_select="vp8_decoder"
1876 wmapro_decoder_select="mdct sinewin"
1877 wmav1_decoder_select="mdct sinewin"
1878 wmav1_encoder_select="mdct sinewin"
1879 wmav2_decoder_select="mdct sinewin"
1880 wmav2_encoder_select="mdct sinewin"
1881 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1882 wmv1_decoder_select="h263_decoder"
1883 wmv1_encoder_select="h263_encoder"
1884 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1885 wmv2_encoder_select="h263_encoder"
1886 wmv3_decoder_select="vc1_decoder"
1887 wmv3image_decoder_select="wmv3_decoder"
1888 zerocodec_decoder_deps="zlib"
1889 zlib_decoder_deps="zlib"
1890 zlib_encoder_deps="zlib"
1891 zmbv_decoder_deps="zlib"
1892 zmbv_encoder_deps="zlib"
1893
1894 # hardware accelerators
1895 dxva2_deps="dxva2api_h"
1896 vaapi_deps="va_va_h"
1897 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1898 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1899 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1900
1901 h263_vaapi_hwaccel_deps="vaapi"
1902 h263_vaapi_hwaccel_select="h263_decoder"
1903 h263_vdpau_hwaccel_deps="vdpau"
1904 h263_vdpau_hwaccel_select="h263_decoder"
1905 h264_dxva2_hwaccel_deps="dxva2"
1906 h264_dxva2_hwaccel_select="h264_decoder"
1907 h264_vaapi_hwaccel_deps="vaapi"
1908 h264_vaapi_hwaccel_select="h264_decoder"
1909 h264_vda_hwaccel_deps="vda"
1910 h264_vda_hwaccel_select="h264_decoder"
1911 h264_vda_old_hwaccel_deps="vda"
1912 h264_vda_old_hwaccel_select="h264_decoder"
1913 h264_vdpau_hwaccel_deps="vdpau"
1914 h264_vdpau_hwaccel_select="h264_decoder"
1915 mpeg1_vdpau_hwaccel_deps="vdpau"
1916 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1917 mpeg2_dxva2_hwaccel_deps="dxva2"
1918 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1919 mpeg2_vaapi_hwaccel_deps="vaapi"
1920 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1921 mpeg2_vdpau_hwaccel_deps="vdpau"
1922 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1923 mpeg4_vaapi_hwaccel_deps="vaapi"
1924 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1925 mpeg4_vdpau_hwaccel_deps="vdpau"
1926 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1927 vc1_dxva2_hwaccel_deps="dxva2"
1928 vc1_dxva2_hwaccel_select="vc1_decoder"
1929 vc1_vaapi_hwaccel_deps="vaapi"
1930 vc1_vaapi_hwaccel_select="vc1_decoder"
1931 vc1_vdpau_hwaccel_deps="vdpau"
1932 vc1_vdpau_hwaccel_select="vc1_decoder"
1933 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1934 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1935 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1936
1937 # parsers
1938 h264_parser_select="h264_decoder"
1939 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1940 mpegvideo_parser_select="error_resilience mpegvideo"
1941 vc1_parser_select="mpegvideo"
1942
1943 # external libraries
1944 libfaac_encoder_deps="libfaac"
1945 libfaac_encoder_select="audio_frame_queue"
1946 libfdk_aac_decoder_deps="libfdk_aac"
1947 libfdk_aac_encoder_deps="libfdk_aac"
1948 libfdk_aac_encoder_select="audio_frame_queue"
1949 libgsm_decoder_deps="libgsm"
1950 libgsm_encoder_deps="libgsm"
1951 libgsm_ms_decoder_deps="libgsm"
1952 libgsm_ms_encoder_deps="libgsm"
1953 libilbc_decoder_deps="libilbc"
1954 libilbc_encoder_deps="libilbc"
1955 libmp3lame_encoder_deps="libmp3lame"
1956 libmp3lame_encoder_select="audio_frame_queue"
1957 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1958 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1959 libopencore_amrnb_encoder_select="audio_frame_queue"
1960 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1961 libopenjpeg_decoder_deps="libopenjpeg"
1962 libopenjpeg_encoder_deps="libopenjpeg"
1963 libopus_decoder_deps="libopus"
1964 libopus_encoder_deps="libopus"
1965 libopus_encoder_select="audio_frame_queue"
1966 libschroedinger_decoder_deps="libschroedinger"
1967 libschroedinger_encoder_deps="libschroedinger"
1968 libspeex_decoder_deps="libspeex"
1969 libspeex_encoder_deps="libspeex"
1970 libspeex_encoder_select="audio_frame_queue"
1971 libtheora_encoder_deps="libtheora"
1972 libtwolame_encoder_deps="libtwolame"
1973 libvo_aacenc_encoder_deps="libvo_aacenc"
1974 libvo_aacenc_encoder_select="audio_frame_queue"
1975 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1976 libvorbis_encoder_deps="libvorbis"
1977 libvorbis_encoder_select="audio_frame_queue"
1978 libvpx_vp8_decoder_deps="libvpx"
1979 libvpx_vp8_encoder_deps="libvpx"
1980 libvpx_vp9_decoder_deps="libvpx"
1981 libvpx_vp9_encoder_deps="libvpx"
1982 libwavpack_encoder_deps="libwavpack"
1983 libwebp_encoder_deps="libwebp"
1984 libx264_encoder_deps="libx264"
1985 libx265_encoder_deps="libx265"
1986 libxavs_encoder_deps="libxavs"
1987 libxvid_encoder_deps="libxvid"
1988
1989 # demuxers / muxers
1990 ac3_demuxer_select="ac3_parser"
1991 asf_demuxer_select="riffdec"
1992 asf_muxer_select="riffenc"
1993 asf_stream_muxer_select="asf_muxer"
1994 avi_demuxer_select="riffdec"
1995 avi_muxer_select="riffenc"
1996 avisynth_demuxer_deps="avisynth"
1997 avisynth_demuxer_select="riffdec"
1998 caf_demuxer_select="riffdec"
1999 dirac_demuxer_select="dirac_parser"
2000 dxa_demuxer_select="riffdec"
2001 eac3_demuxer_select="ac3_parser"
2002 f4v_muxer_select="mov_muxer"
2003 flac_demuxer_select="flac_parser"
2004 hds_muxer_select="flv_muxer"
2005 hls_muxer_select="mpegts_muxer"
2006 ipod_muxer_select="mov_muxer"
2007 ismv_muxer_select="mov_muxer"
2008 matroska_audio_muxer_select="matroska_muxer"
2009 matroska_demuxer_select="riffdec"
2010 matroska_demuxer_suggest="bzlib lzo zlib"
2011 matroska_muxer_select="riffenc"
2012 mmf_muxer_select="riffenc"
2013 mov_demuxer_select="riffdec"
2014 mov_demuxer_suggest="zlib"
2015 mov_muxer_select="riffenc rtpenc_chain"
2016 mp3_demuxer_select="mpegaudio_parser"
2017 mp4_muxer_select="mov_muxer"
2018 mpegts_muxer_select="adts_muxer latm_muxer"
2019 mpegtsraw_demuxer_select="mpegts_demuxer"
2020 mxf_d10_muxer_select="mxf_muxer"
2021 nut_muxer_select="riffenc"
2022 nuv_demuxer_select="riffdec"
2023 ogg_demuxer_select="golomb"
2024 psp_muxer_select="mov_muxer"
2025 rtp_demuxer_select="sdp_demuxer"
2026 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2027 rtsp_demuxer_select="http_protocol rtpdec"
2028 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2029 sap_demuxer_select="sdp_demuxer"
2030 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2031 sdp_demuxer_select="rtpdec"
2032 smoothstreaming_muxer_select="ismv_muxer"
2033 spdif_muxer_select="aac_parser"
2034 tak_demuxer_select="tak_parser"
2035 tg2_muxer_select="mov_muxer"
2036 tgp_muxer_select="mov_muxer"
2037 w64_demuxer_select="wav_demuxer"
2038 wav_demuxer_select="riffdec"
2039 wav_muxer_select="riffenc"
2040 webm_muxer_select="riffenc"
2041 wtv_demuxer_select="riffdec"
2042 xmv_demuxer_select="riffdec"
2043 xwma_demuxer_select="riffdec"
2044
2045 # indevs / outdevs
2046 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2047 alsa_outdev_deps="alsa_asoundlib_h"
2048 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2049 dv1394_indev_deps="dv1394"
2050 dv1394_indev_select="dv_demuxer"
2051 fbdev_indev_deps="linux_fb_h"
2052 jack_indev_deps="jack_jack_h pthreads"
2053 libcdio_indev_deps="libcdio"
2054 libdc1394_indev_deps="libdc1394"
2055 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2056 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2057 pulse_indev_deps="libpulse"
2058 sndio_indev_deps="sndio_h"
2059 sndio_outdev_deps="sndio_h"
2060 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2061 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2062 vfwcap_indev_extralibs="-lavicap32"
2063 x11grab_indev_deps="x11grab XShmCreateImage"
2064
2065 # protocols
2066 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2067 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2068 ffrtmpcrypt_protocol_select="tcp_protocol"
2069 ffrtmphttp_protocol_deps="!librtmp_protocol"
2070 ffrtmphttp_protocol_select="http_protocol"
2071 gopher_protocol_select="network"
2072 http_protocol_select="tcp_protocol"
2073 httpproxy_protocol_select="tcp_protocol"
2074 https_protocol_select="tls_protocol"
2075 librtmp_protocol_deps="librtmp"
2076 librtmpe_protocol_deps="librtmp"
2077 librtmps_protocol_deps="librtmp"
2078 librtmpt_protocol_deps="librtmp"
2079 librtmpte_protocol_deps="librtmp"
2080 mmsh_protocol_select="http_protocol"
2081 mmst_protocol_select="network"
2082 rtmp_protocol_deps="!librtmp_protocol"
2083 rtmp_protocol_select="tcp_protocol"
2084 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2085 rtmps_protocol_deps="!librtmp_protocol"
2086 rtmps_protocol_select="tls_protocol"
2087 rtmpt_protocol_select="ffrtmphttp_protocol"
2088 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2089 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2090 rtp_protocol_select="udp_protocol"
2091 sctp_protocol_deps="struct_sctp_event_subscribe"
2092 sctp_protocol_select="network"
2093 srtp_protocol_select="rtp_protocol"
2094 tcp_protocol_select="network"
2095 tls_protocol_deps_any="openssl gnutls"
2096 tls_protocol_select="tcp_protocol"
2097 udp_protocol_select="network"
2098 unix_protocol_deps="sys_un_h"
2099 unix_protocol_select="network"
2100
2101 # filters
2102 blackframe_filter_deps="gpl"
2103 boxblur_filter_deps="gpl"
2104 bs2b_filter_deps="libbs2b"
2105 cropdetect_filter_deps="gpl"
2106 delogo_filter_deps="gpl"
2107 drawtext_filter_deps="libfreetype"
2108 frei0r_filter_deps="frei0r dlopen"
2109 frei0r_filter_extralibs='$ldl'
2110 frei0r_src_filter_deps="frei0r dlopen"
2111 frei0r_src_filter_extralibs='$ldl'
2112 hqdn3d_filter_deps="gpl"
2113 interlace_filter_deps="gpl"
2114 ocv_filter_deps="libopencv"
2115 resample_filter_deps="avresample"
2116 scale_filter_deps="swscale"
2117
2118 # examples
2119 avcodec_example_deps="avcodec avutil"
2120 filter_audio_example_deps="avfilter avutil"
2121 metadata_example_deps="avformat avutil"
2122 output_example_deps="avcodec avformat avutil swscale"
2123 transcode_aac_example_deps="avcodec avformat avresample"
2124
2125 # libraries, in linking order
2126 avcodec_deps="avutil"
2127 avdevice_deps="avformat avcodec avutil"
2128 avfilter_deps="avutil"
2129 avformat_deps="avcodec avutil"
2130 avresample_deps="avutil"
2131 swscale_deps="avutil"
2132
2133 # programs
2134 avconv_deps="avcodec avfilter avformat avresample swscale"
2135 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2136                fps_filter null_filter resample_filter scale_filter
2137                setpts_filter trim_filter"
2138 avplay_deps="avcodec avformat avresample swscale sdl"
2139 avplay_libs='$sdl_libs'
2140 avplay_select="rdft"
2141 avprobe_deps="avcodec avformat"
2142 avserver_deps="avformat fork !shared"
2143 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2144
2145 # documentation
2146 pod2man_deps="doc"
2147 texi2html_deps="doc"
2148
2149 # default parameters
2150
2151 logfile="config.log"
2152
2153 # installation paths
2154 prefix_default="/usr/local"
2155 bindir_default='${prefix}/bin'
2156 datadir_default='${prefix}/share/avconv'
2157 docdir_default='${prefix}/share/doc/libav'
2158 incdir_default='${prefix}/include'
2159 libdir_default='${prefix}/lib'
2160 mandir_default='${prefix}/share/man'
2161 shlibdir_default="$libdir_default"
2162
2163 # toolchain
2164 ar_default="ar"
2165 cc_default="gcc"
2166 host_cc_default="gcc"
2167 cp_f="cp -f"
2168 ln_s="ln -s -f"
2169 nm_default="nm -g"
2170 objformat="elf"
2171 pkg_config_default=pkg-config
2172 ranlib="ranlib"
2173 strip="strip"
2174 yasmexe="yasm"
2175
2176 nogas=":"
2177
2178 # machine
2179 arch_default=$(uname -m)
2180 cpu="generic"
2181
2182 # OS
2183 target_os_default=$(tolower $(uname -s))
2184 host_os=$target_os_default
2185
2186 # configurable options
2187 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2188
2189 enable asm
2190 enable debug
2191 enable doc
2192 enable optimizations
2193 enable safe_bitstream_reader
2194 enable static
2195 enable swscale_alpha
2196
2197 # By default, enable only those hwaccels that have no external dependencies.
2198 enable dxva2 vdpau
2199
2200 # build settings
2201 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2202 LIBPREF="lib"
2203 LIBSUF=".a"
2204 FULLNAME='$(NAME)$(BUILDSUF)'
2205 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2206 SLIBPREF="lib"
2207 SLIBSUF=".so"
2208 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2209 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2210 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2211 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2212 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2213 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2214
2215 asflags_filter=echo
2216 cflags_filter=echo
2217 ldflags_filter=echo
2218
2219 AS_C='-c'
2220 AS_O='-o $@'
2221 CC_C='-c'
2222 CC_E='-E -o $@'
2223 CC_O='-o $@'
2224 LD_O='-o $@'
2225 LD_LIB='-l%'
2226 LD_PATH='-L'
2227 HOSTCC_C='-c'
2228 HOSTCC_E='-E -o $@'
2229 HOSTCC_O='-o $@'
2230 HOSTLD_O='-o $@'
2231
2232 host_libs='-lm'
2233 host_cflags_filter=echo
2234 host_ldflags_filter=echo
2235
2236 target_path='$(CURDIR)'
2237
2238 # since the object filename is not given with the -MM flag, the compiler
2239 # is only able to print the basename, and we must add the path ourselves
2240 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2241 DEPFLAGS='-MM'
2242
2243 # find source path
2244 if test -f configure; then
2245     source_path=.
2246 else
2247     source_path=$(cd $(dirname "$0"); pwd)
2248     echo "$source_path" | grep -q '[[:blank:]]' &&
2249         die "Out of tree builds are impossible with whitespace in source path."
2250     test -e "$source_path/config.h" &&
2251         die "Out of tree builds are impossible with config.h in source dir."
2252 fi
2253
2254 for v in "$@"; do
2255     r=${v#*=}
2256     l=${v%"$r"}
2257     r=$(sh_quote "$r")
2258     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2259 done
2260
2261 find_things(){
2262     thing=$1
2263     pattern=$2
2264     file=$source_path/$3
2265     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2266 }
2267
2268 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2269 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2270 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2271 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2272 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2273 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2274 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2275 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2276 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2277 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2278 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2279
2280 ALL_COMPONENTS="
2281     $BSF_LIST
2282     $DECODER_LIST
2283     $DEMUXER_LIST
2284     $ENCODER_LIST
2285     $FILTER_LIST
2286     $HWACCEL_LIST
2287     $INDEV_LIST
2288     $MUXER_LIST
2289     $OUTDEV_LIST
2290     $PARSER_LIST
2291     $PROTOCOL_LIST
2292 "
2293
2294 for n in $COMPONENT_LIST; do
2295     v=$(toupper ${n%s})_LIST
2296     eval enable \$$v
2297     eval ${n}_if_any="\$$v"
2298 done
2299
2300 enable $ARCH_EXT_LIST
2301
2302 die_unknown(){
2303     echo "Unknown option \"$1\"."
2304     echo "See $0 --help for available options."
2305     exit 1
2306 }
2307
2308 print_3_columns() {
2309     cat | tr ' ' '\n' | sort | pr -r -3 -t
2310 }
2311
2312 show_list() {
2313     suffix=_$1
2314     shift
2315     echo $* | sed s/$suffix//g | print_3_columns
2316     exit 0
2317 }
2318
2319 rand_list(){
2320     IFS=', '
2321     set -- $*
2322     unset IFS
2323     for thing; do
2324         comp=${thing%:*}
2325         prob=${thing#$comp}
2326         prob=${prob#:}
2327         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2328         echo "prob ${prob:-0.5}"
2329         printf '%s\n' $comp
2330     done
2331 }
2332
2333 do_random(){
2334     action=$1
2335     shift
2336     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2337     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2338 }
2339
2340 for opt do
2341     optval="${opt#*=}"
2342     case "$opt" in
2343         --extra-ldflags=*)
2344             add_ldflags $optval
2345         ;;
2346         --extra-libs=*)
2347             add_extralibs $optval
2348         ;;
2349         --disable-devices)
2350             disable $INDEV_LIST $OUTDEV_LIST
2351         ;;
2352         --enable-debug=*)
2353             debuglevel="$optval"
2354         ;;
2355         --disable-programs)
2356             disable $PROGRAM_LIST
2357         ;;
2358         --disable-everything)
2359             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2360         ;;
2361         --disable-all)
2362             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2363             disable $LIBRARY_LIST $PROGRAM_LIST doc
2364         ;;
2365         --enable-random|--disable-random)
2366             action=${opt%%-random}
2367             do_random ${action#--} $COMPONENT_LIST
2368         ;;
2369         --enable-random=*|--disable-random=*)
2370             action=${opt%%-random=*}
2371             do_random ${action#--} $optval
2372         ;;
2373         --enable-*=*|--disable-*=*)
2374             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2375             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2376             eval list=\$$(toupper $thing)_LIST
2377             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2378             $action $(filter "$name" $list)
2379         ;;
2380         --enable-?*|--disable-?*)
2381             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2382             if is_in $option $COMPONENT_LIST; then
2383                 test $action = disable && action=unset
2384                 eval $action \$$(toupper ${option%s})_LIST
2385             elif is_in $option $CMDLINE_SELECT; then
2386                 $action $option
2387             else
2388                 die_unknown $opt
2389             fi
2390         ;;
2391         --list-*)
2392             NAME="${opt#--list-}"
2393             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2394             NAME=${NAME%s}
2395             eval show_list $NAME \$$(toupper $NAME)_LIST
2396         ;;
2397         --help|-h) show_help
2398         ;;
2399         *)
2400             optname="${opt%%=*}"
2401             optname="${optname#--}"
2402             optname=$(echo "$optname" | sed 's/-/_/g')
2403             if is_in $optname $CMDLINE_SET; then
2404                 eval $optname='$optval'
2405             elif is_in $optname $CMDLINE_APPEND; then
2406                 append $optname "$optval"
2407             else
2408                 die_unknown $opt
2409             fi
2410         ;;
2411     esac
2412 done
2413
2414 disabled logging && logfile=/dev/null
2415
2416 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2417 set >> $logfile
2418
2419 test -n "$cross_prefix" && enable cross_compile
2420
2421 if enabled cross_compile; then
2422     test -n "$arch" && test -n "$target_os" ||
2423         die "Must specify target arch and OS when cross-compiling"
2424 fi
2425
2426 ar_default="${cross_prefix}${ar_default}"
2427 cc_default="${cross_prefix}${cc_default}"
2428 nm_default="${cross_prefix}${nm_default}"
2429 pkg_config_default="${cross_prefix}${pkg_config_default}"
2430 ranlib="${cross_prefix}${ranlib}"
2431 strip="${cross_prefix}${strip}"
2432
2433 sysinclude_default="${sysroot}/usr/include"
2434
2435 case "$toolchain" in
2436     clang-asan)
2437         cc_default="clang"
2438         add_cflags  -fsanitize=address
2439         add_ldflags -fsanitize=address
2440     ;;
2441     clang-tsan)
2442         cc_default="clang"
2443         add_cflags  -fsanitize=thread -pie
2444         add_ldflags -fsanitize=thread -pie
2445     ;;
2446     clang-usan)
2447         cc_default="clang"
2448         add_cflags  -fsanitize=undefined -O1
2449         add_ldflags -fsanitize=undefined
2450     ;;
2451     gcc-asan)
2452         cc_default="gcc"
2453         add_cflags  -fsanitize=address
2454         add_ldflags -fsanitize=address
2455     ;;
2456     gcc-tsan)
2457         cc_default="gcc"
2458         add_cflags  -fsanitize=thread -pie -fPIC
2459         add_ldflags -fsanitize=thread -pie -fPIC
2460     ;;
2461     gcc-usan)
2462         cc_default="gcc"
2463         add_cflags  -fsanitize=undefined
2464         add_ldflags -fsanitize=undefined
2465     ;;
2466     valgrind-massif)
2467         target_exec_default="valgrind"
2468         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2469     ;;
2470     valgrind-memcheck)
2471         target_exec_default="valgrind"
2472         target_exec_args="--track-origins=yes --leak-check=full"
2473     ;;
2474     msvc)
2475         # Check whether the current MSVC version needs the C99 converter.
2476         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2477         # support enough of C99 to build libav. Default to the new
2478         # behaviour if the regexp was unable to match anything, since this
2479         # successfully parses the version number of existing supported
2480         # versions that require the converter (MSVC 2010 and 2012).
2481         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2482         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2483             cc_default="cl"
2484         else
2485             cc_default="c99wrap cl"
2486         fi
2487         ld_default="link"
2488         nm_default="dumpbin -symbols"
2489         ar_default="lib"
2490         target_os_default="win32"
2491         # Use a relative path for TMPDIR. This makes sure all the
2492         # ffconf temp files are written with a relative path, avoiding
2493         # issues with msys/win32 path conversion for MSVC parameters
2494         # such as -Fo<file> or -out:<file>.
2495         TMPDIR=.
2496     ;;
2497     icl)
2498         cc_default="icl"
2499         ld_default="xilink"
2500         nm_default="dumpbin -symbols"
2501         ar_default="xilib"
2502         target_os_default="win32"
2503         TMPDIR=.
2504     ;;
2505     gcov)
2506         add_cflags  -fprofile-arcs -ftest-coverage
2507         add_ldflags -fprofile-arcs -ftest-coverage
2508     ;;
2509     hardened)
2510         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2511         add_ldflags -Wl,-z,relro -Wl,-z,now
2512     ;;
2513     ?*)
2514         die "Unknown toolchain $toolchain"
2515     ;;
2516 esac
2517
2518 set_default arch cc pkg_config sysinclude target_exec target_os
2519 enabled cross_compile || host_cc_default=$cc
2520 set_default host_cc
2521
2522 if ! $pkg_config --version >/dev/null 2>&1; then
2523     warn "$pkg_config not found, library detection may fail."
2524     pkg_config=false
2525 fi
2526
2527 exesuf() {
2528     case $1 in
2529         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2530     esac
2531 }
2532
2533 EXESUF=$(exesuf $target_os)
2534 HOSTEXESUF=$(exesuf $host_os)
2535
2536 # set temporary file name
2537 : ${TMPDIR:=$TEMPDIR}
2538 : ${TMPDIR:=$TMP}
2539 : ${TMPDIR:=/tmp}
2540
2541 if ! check_cmd mktemp -u XXXXXX; then
2542     # simple replacement for missing mktemp
2543     # NOT SAFE FOR GENERAL USE
2544     mktemp(){
2545         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2546     }
2547 fi
2548
2549 tmpfile(){
2550     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2551         (set -C; exec > $tmp) 2>/dev/null ||
2552         die "Unable to create temporary file in $TMPDIR."
2553     append TMPFILES $tmp
2554     eval $1=$tmp
2555 }
2556
2557 trap 'rm -f -- $TMPFILES' EXIT
2558
2559 tmpfile TMPASM .asm
2560 tmpfile TMPC   .c
2561 tmpfile TMPE   $EXESUF
2562 tmpfile TMPH   .h
2563 tmpfile TMPO   .o
2564 tmpfile TMPS   .S
2565 tmpfile TMPSH  .sh
2566 tmpfile TMPV   .ver
2567
2568 unset -f mktemp
2569
2570 chmod +x $TMPE
2571
2572 # make sure we can execute files in $TMPDIR
2573 cat > $TMPSH 2>> $logfile <<EOF
2574 #! /bin/sh
2575 EOF
2576 chmod +x $TMPSH >> $logfile 2>&1
2577 if ! $TMPSH >> $logfile 2>&1; then
2578     cat <<EOF
2579 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2580 variable to another directory and make sure that it is not mounted noexec.
2581 EOF
2582     die "Sanity test failed."
2583 fi
2584
2585 ccc_flags(){
2586     for flag; do
2587         case $flag in
2588             -std=c99)           echo -c99                       ;;
2589             -mcpu=*)            echo -arch ${flag#*=}           ;;
2590             -mieee)             echo -ieee                      ;;
2591             -O*|-fast)          echo $flag                      ;;
2592             -fno-math-errno)    echo -assume nomath_errno       ;;
2593             -g)                 echo -g3                        ;;
2594             -Wall)              echo -msg_enable level2         ;;
2595             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2596             -Wl,*)              echo $flag                      ;;
2597             -f*|-W*)                                            ;;
2598             *)                  echo $flag                      ;;
2599         esac
2600    done
2601 }
2602
2603 cparser_flags(){
2604     for flag; do
2605         case $flag in
2606             -Wno-switch)             echo -Wno-switch-enum ;;
2607             -Wno-format-zero-length) ;;
2608             -Wdisabled-optimization) ;;
2609             -Wno-pointer-sign)       echo -Wno-other ;;
2610             *)                       echo $flag ;;
2611         esac
2612     done
2613 }
2614
2615 msvc_common_flags(){
2616     for flag; do
2617         case $flag in
2618             # In addition to specifying certain flags under the compiler
2619             # specific filters, they must be specified here as well or else the
2620             # generic catch all at the bottom will print the original flag.
2621             -Wall)                ;;
2622             -std=c99)             ;;
2623             # Common flags
2624             -fomit-frame-pointer) ;;
2625             -g)                   echo -Z7 ;;
2626             -fno-math-errno)      ;;
2627             -fno-common)          ;;
2628             -fno-signed-zeros)    ;;
2629             -fPIC)                ;;
2630             -mthumb)              ;;
2631             -march=*)             ;;
2632             -lz)                  echo zlib.lib ;;
2633             -lavifil32)           echo vfw32.lib ;;
2634             -lavicap32)           echo vfw32.lib user32.lib ;;
2635             -l*)                  echo ${flag#-l}.lib ;;
2636             *)                    echo $flag ;;
2637         esac
2638     done
2639 }
2640
2641 msvc_flags(){
2642     msvc_common_flags "$@"
2643     for flag; do
2644         case $flag in
2645             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2646                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2647                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2648                                        -wd4273 ;;
2649         esac
2650     done
2651 }
2652
2653 icl_flags(){
2654     msvc_common_flags "$@"
2655     for flag; do
2656         case $flag in
2657             # Despite what Intel's documentation says -Wall, which is supported
2658             # on Windows, does enable remarks so disable them here.
2659             -Wall)                echo $flag -Qdiag-disable:remark ;;
2660             -std=c99)             echo -Qstd=c99 ;;
2661         esac
2662     done
2663 }
2664
2665 pgi_flags(){
2666     for flag; do
2667         case $flag in
2668             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2669             -fomit-frame-pointer) echo -Mnoframe ;;
2670             -g)                   echo -gopt ;;
2671             *)                    echo $flag ;;
2672         esac
2673     done
2674 }
2675
2676 suncc_flags(){
2677     for flag; do
2678         case $flag in
2679             -march=*|-mcpu=*)
2680                 case "${flag#*=}" in
2681                     native)                   echo -xtarget=native       ;;
2682                     v9|niagara)               echo -xarch=sparc          ;;
2683                     ultrasparc)               echo -xarch=sparcvis       ;;
2684                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2685                     i586|pentium)             echo -xchip=pentium        ;;
2686                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2687                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2688                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2689                     pentium4*)          echo -xtarget=pentium4           ;;
2690                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2691                     *-sse3)             echo -xarch=sse3                 ;;
2692                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2693                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2694                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2695                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2696                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2697                     k8|opteron|athlon64|athlon-fx)
2698                                                echo -xarch=sse2a         ;;
2699                     athlon*)                   echo -xarch=pentium_proa  ;;
2700                 esac
2701                 ;;
2702             -std=c99)             echo -xc99              ;;
2703             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2704             -fPIC)                echo -KPIC -xcode=pic32 ;;
2705             -W*,*)                echo $flag              ;;
2706             -f*-*|-W*|-mimpure-text)                      ;;
2707             -shared)              echo -G                 ;;
2708             *)                    echo $flag              ;;
2709         esac
2710     done
2711 }
2712
2713 tms470_flags(){
2714     for flag; do
2715         case $flag in
2716             -march=*|-mcpu=*)
2717                 case "${flag#*=}" in
2718                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2719                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2720                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2721                     armv6*|arm11*)          echo -mv=6   ;;
2722                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2723                                             echo -mv=5e  ;;
2724                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2725                 esac
2726                 ;;
2727             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2728             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2729             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2730             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2731             -msoft-float)   echo --float_support=vfplib       ;;
2732             -O[0-3]|-mf=*)  echo $flag                        ;;
2733             -g)             echo -g -mn                       ;;
2734             -pds=*)         echo $flag                        ;;
2735             -D*|-I*)        echo $flag                        ;;
2736             --gcc|--abi=*)  echo $flag                        ;;
2737             -me)            echo $flag                        ;;
2738         esac
2739     done
2740 }
2741
2742 probe_cc(){
2743     pfx=$1
2744     _cc=$2
2745
2746     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2747     unset _ld_o _ldflags _ld_lib _ld_path
2748     unset _depflags _DEPCMD _DEPFLAGS
2749     _flags_filter=echo
2750
2751     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2752         _type=llvm_gcc
2753         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2754         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2755         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2756         _cflags_speed='-O3'
2757         _cflags_size='-Os'
2758     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2759         _type=gcc
2760         gcc_version=$($_cc --version | head -n1)
2761         gcc_basever=$($_cc -dumpversion)
2762         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2763         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2764         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2765         if ! $_cc -dumpversion | grep -q '^2\.'; then
2766             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2767         fi
2768         _cflags_speed='-O3'
2769         _cflags_size='-Os'
2770     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2771         _type=icc
2772         _ident=$($_cc --version | head -n1)
2773         _depflags='-MMD'
2774         _cflags_speed='-O3'
2775         _cflags_size='-Os'
2776         _cflags_noopt='-O1'
2777     elif $_cc -v 2>&1 | grep -q xlc; then
2778         _type=xlc
2779         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2780         _cflags_speed='-O5'
2781         _cflags_size='-O5 -qcompact'
2782     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2783         _type=ccc
2784         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2785         _DEPFLAGS='-M'
2786         _cflags_speed='-fast'
2787         _cflags_size='-O1'
2788         _flags_filter=ccc_flags
2789     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2790         test -d "$sysroot" || die "No valid sysroot specified."
2791         _type=armcc
2792         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2793         armcc_conf="$PWD/armcc.conf"
2794         $_cc --arm_linux_configure                 \
2795              --arm_linux_config_file="$armcc_conf" \
2796              --configure_sysroot="$sysroot"        \
2797              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2798              die "Error creating armcc configuration file."
2799         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2800         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2801         as_default="${cross_prefix}gcc"
2802         _depflags='-MMD'
2803         _cflags_speed='-O3'
2804         _cflags_size='-Os'
2805     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2806         _type=tms470
2807         _ident=$($_cc -version | head -n1 | tr -s ' ')
2808         _flags='--gcc --abi=eabi -me'
2809         _cc_e='-ppl -fe=$@'
2810         _cc_o='-fe=$@'
2811         _depflags='-ppa -ppd=$(@:.o=.d)'
2812         _cflags_speed='-O3 -mf=5'
2813         _cflags_size='-O3 -mf=2'
2814         _flags_filter=tms470_flags
2815     elif $_cc -v 2>&1 | grep -q clang; then
2816         _type=clang
2817         _ident=$($_cc --version | head -n1)
2818         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2819         _cflags_speed='-O3'
2820         _cflags_size='-Os'
2821     elif $_cc -V 2>&1 | grep -q Sun; then
2822         _type=suncc
2823         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2824         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2825         _DEPFLAGS='-xM1 -xc99'
2826         _ldflags='-std=c99'
2827         _cflags_speed='-O5'
2828         _cflags_size='-O5 -xspace'
2829         _flags_filter=suncc_flags
2830     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2831         _type=pathscale
2832         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2833         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2834         _cflags_speed='-O2'
2835         _cflags_size='-Os'
2836         _flags_filter='filter_out -Wdisabled-optimization'
2837     elif $_cc -v 2>&1 | grep -q Open64; then
2838         _type=open64
2839         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2840         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2841         _cflags_speed='-O2'
2842         _cflags_size='-Os'
2843         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2844     elif $_cc -V 2>&1 | grep -q Portland; then
2845         _type=pgi
2846         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2847         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2848         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2849         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2850         _cflags_noopt="-O1"
2851         _flags_filter=pgi_flags
2852     elif $_cc 2>&1 | grep -q Microsoft; then
2853         _type=msvc
2854         _ident=$($cc 2>&1 | head -n1)
2855         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2856         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2857         _cflags_speed="-O2"
2858         _cflags_size="-O1"
2859         if $_cc 2>&1 | grep -q Linker; then
2860             _ld_o='-out:$@'
2861         else
2862             _ld_o='-Fe$@'
2863         fi
2864         _cc_o='-Fo$@'
2865         _cc_e='-P -Fi$@'
2866         _flags_filter=msvc_flags
2867         _ld_lib='lib%.a'
2868         _ld_path='-libpath:'
2869         _flags='-nologo'
2870         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2871         if [ $pfx = hostcc ]; then
2872             append _cflags -Dsnprintf=_snprintf
2873         fi
2874     elif $_cc 2>&1 | grep -q Intel; then
2875         _type=icl
2876         _ident=$($cc 2>&1 | head -n1)
2877         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2878         # Not only is O3 broken on 13.x+ but it is slower on all previous
2879         # versions (tested) as well.
2880         _cflags_speed="-O2"
2881         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2882         if $_cc 2>&1 | grep -q Linker; then
2883             _ld_o='-out:$@'
2884         else
2885             _ld_o='-Fe$@'
2886         fi
2887         _cc_o='-Fo$@'
2888         _cc_e='-P'
2889         _flags_filter=icl_flags
2890         _ld_lib='lib%.a'
2891         _ld_path='-libpath:'
2892         # -Qdiag-error to make icl error when seeing certain unknown arguments
2893         _flags='-nologo -Qdiag-error:4044,10157'
2894         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2895         # with MSVC which enables it by default.
2896         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2897         if [ $pfx = hostcc ]; then
2898             append _cflags -Dsnprintf=_snprintf
2899         fi
2900     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2901         _type=cparser
2902         _ident=$($_cc --version | head -n1)
2903         _depflags='-MMD'
2904         _cflags_speed='-O4'
2905         _cflags_size='-O2'
2906         _flags_filter=cparser_flags
2907     fi
2908
2909     eval ${pfx}_type=\$_type
2910     eval ${pfx}_ident=\$_ident
2911 }
2912
2913 set_ccvars(){
2914     eval ${1}_C=\${_cc_c-\${${1}_C}}
2915     eval ${1}_E=\${_cc_e-\${${1}_E}}
2916     eval ${1}_O=\${_cc_o-\${${1}_O}}
2917
2918     if [ -n "$_depflags" ]; then
2919         eval ${1}_DEPFLAGS=\$_depflags
2920     else
2921         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2922         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2923         eval DEP${1}FLAGS=\$_flags
2924     fi
2925 }
2926
2927 probe_cc cc "$cc"
2928 cflags_filter=$_flags_filter
2929 cflags_speed=$_cflags_speed
2930 cflags_size=$_cflags_size
2931 cflags_noopt=$_cflags_noopt
2932 add_cflags $_flags $_cflags
2933 cc_ldflags=$_ldflags
2934 set_ccvars CC
2935
2936 probe_cc hostcc "$host_cc"
2937 host_cflags_filter=$_flags_filter
2938 add_host_cflags  $_flags $_cflags
2939 set_ccvars HOSTCC
2940
2941 test -n "$cc_type" && enable $cc_type ||
2942     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2943
2944 : ${as_default:=$cc}
2945 : ${dep_cc_default:=$cc}
2946 : ${ld_default:=$cc}
2947 : ${host_ld_default:=$host_cc}
2948 set_default ar as dep_cc ld host_ld
2949
2950 probe_cc as "$as"
2951 asflags_filter=$_flags_filter
2952 add_asflags $_flags $_cflags
2953 set_ccvars AS
2954
2955 probe_cc ld "$ld"
2956 ldflags_filter=$_flags_filter
2957 add_ldflags $_flags $_ldflags
2958 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2959 LD_O=${_ld_o-$LD_O}
2960 LD_LIB=${_ld_lib-$LD_LIB}
2961 LD_PATH=${_ld_path-$LD_PATH}
2962
2963 probe_cc hostld "$host_ld"
2964 host_ldflags_filter=$_flags_filter
2965 add_host_ldflags $_flags $_ldflags
2966 HOSTLD_O=${_ld_o-$HOSTLD_O}
2967
2968 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2969     probe_cc depcc "$dep_cc"
2970     CCDEP=${_DEPCMD:-$DEPCMD}
2971     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2972     DEPCCFLAGS=$_flags
2973 fi
2974
2975 if $ar 2>&1 | grep -q Microsoft; then
2976     arflags="-nologo"
2977     ar_o='-out:$@'
2978 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2979     arflags="rq"
2980     ar_o='$@'
2981 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2982     arflags='-Xany -r -c'
2983     ar_o='$@'
2984 else
2985     arflags="rc"
2986     ar_o='$@'
2987 fi
2988
2989 add_cflags $extra_cflags
2990 add_asflags $extra_cflags
2991
2992 if test -n "$sysroot"; then
2993     case "$cc_type" in
2994         gcc|llvm_gcc|clang)
2995             add_cppflags --sysroot="$sysroot"
2996             add_ldflags --sysroot="$sysroot"
2997         ;;
2998         tms470)
2999             add_cppflags -I"$sysinclude"
3000             add_ldflags  --sysroot="$sysroot"
3001         ;;
3002     esac
3003 fi
3004
3005 if test "$cpu" = host; then
3006     enabled cross_compile &&
3007         die "--cpu=host makes no sense when cross-compiling."
3008
3009     case "$cc_type" in
3010         gcc|llvm_gcc)
3011             check_native(){
3012                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3013                 sed -n "/cc1.*$1=/{
3014                             s/.*$1=\\([^ ]*\\).*/\\1/
3015                             p
3016                             q
3017                         }" $TMPE
3018             }
3019             cpu=$(check_native -march || check_native -mcpu)
3020         ;;
3021     esac
3022
3023     test "${cpu:-host}" = host &&
3024         die "--cpu=host not supported with compiler $cc"
3025 fi
3026
3027 # Deal with common $arch aliases
3028 case "$arch" in
3029     aarch64|arm64)
3030         arch="aarch64"
3031     ;;
3032     arm*)
3033         arch="arm"
3034     ;;
3035     mips*|IP*)
3036         arch="mips"
3037     ;;
3038     parisc*|hppa*)
3039         arch="parisc"
3040     ;;
3041     "Power Macintosh"|ppc*|powerpc*)
3042         arch="ppc"
3043     ;;
3044     s390|s390x)
3045         arch="s390"
3046     ;;
3047     sh4|sh)
3048         arch="sh4"
3049     ;;
3050     sun4u|sparc*)
3051         arch="sparc"
3052     ;;
3053     tilegx|tile-gx)
3054         arch="tilegx"
3055     ;;
3056     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3057         arch="x86"
3058     ;;
3059 esac
3060
3061 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3062 enable $arch
3063
3064 # Add processor-specific flags
3065 if enabled aarch64; then
3066
3067     case $cpu in
3068         armv*)
3069             cpuflags="-march=$cpu"
3070         ;;
3071         *)
3072             cpuflags="-mcpu=$cpu"
3073         ;;
3074     esac
3075
3076 elif enabled alpha; then
3077
3078     cpuflags="-mcpu=$cpu"
3079
3080 elif enabled arm; then
3081
3082     check_arm_arch() {
3083         check_cpp_condition stddef.h \
3084             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3085             $cpuflags
3086     }
3087
3088     probe_arm_arch() {
3089         if   check_arm_arch 4;        then echo armv4;
3090         elif check_arm_arch 4T;       then echo armv4t;
3091         elif check_arm_arch 5;        then echo armv5;
3092         elif check_arm_arch 5E;       then echo armv5e;
3093         elif check_arm_arch 5T;       then echo armv5t;
3094         elif check_arm_arch 5TE;      then echo armv5te;
3095         elif check_arm_arch 5TEJ;     then echo armv5te;
3096         elif check_arm_arch 6;        then echo armv6;
3097         elif check_arm_arch 6J;       then echo armv6j;
3098         elif check_arm_arch 6K;       then echo armv6k;
3099         elif check_arm_arch 6Z;       then echo armv6z;
3100         elif check_arm_arch 6ZK;      then echo armv6zk;
3101         elif check_arm_arch 6T2;      then echo armv6t2;
3102         elif check_arm_arch 7;        then echo armv7;
3103         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3104         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3105         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3106         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3107         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3108         fi
3109     }
3110
3111     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3112
3113     case $cpu in
3114         armv*)
3115             cpuflags="-march=$cpu"
3116             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3117         ;;
3118         *)
3119             cpuflags="-mcpu=$cpu"
3120             case $cpu in
3121                 cortex-a*)                               subarch=armv7a  ;;
3122                 cortex-r*)                               subarch=armv7r  ;;
3123                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3124                 arm11*)                                  subarch=armv6   ;;
3125                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3126                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3127                 *)                             subarch=$(probe_arm_arch) ;;
3128             esac
3129         ;;
3130     esac
3131
3132     case "$subarch" in
3133         armv5t*)    enable fast_clz                ;;
3134         armv[6-8]*) enable fast_clz fast_unaligned ;;
3135     esac
3136
3137 elif enabled avr32; then
3138
3139     case $cpu in
3140         ap7[02]0[0-2])
3141             subarch="avr32_ap"
3142             cpuflags="-mpart=$cpu"
3143         ;;
3144         ap)
3145             subarch="avr32_ap"
3146             cpuflags="-march=$cpu"
3147         ;;
3148         uc3[ab]*)
3149             subarch="avr32_uc"
3150             cpuflags="-mcpu=$cpu"
3151         ;;
3152         uc)
3153             subarch="avr32_uc"
3154             cpuflags="-march=$cpu"
3155         ;;
3156     esac
3157
3158 elif enabled bfin; then
3159
3160     cpuflags="-mcpu=$cpu"
3161
3162 elif enabled mips; then
3163
3164     cpuflags="-march=$cpu"
3165
3166 elif enabled ppc; then
3167
3168     disable ldbrx
3169
3170     case $(tolower $cpu) in
3171         601|ppc601|powerpc601)
3172             cpuflags="-mcpu=601"
3173             disable altivec
3174         ;;
3175         603*|ppc603*|powerpc603*)
3176             cpuflags="-mcpu=603"
3177             disable altivec
3178         ;;
3179         604*|ppc604*|powerpc604*)
3180             cpuflags="-mcpu=604"
3181             disable altivec
3182         ;;
3183         g3|75*|ppc75*|powerpc75*)
3184             cpuflags="-mcpu=750"
3185             disable altivec
3186         ;;
3187         g4|745*|ppc745*|powerpc745*)
3188             cpuflags="-mcpu=7450"
3189         ;;
3190         74*|ppc74*|powerpc74*)
3191             cpuflags="-mcpu=7400"
3192         ;;
3193         g5|970|ppc970|powerpc970)
3194             cpuflags="-mcpu=970"
3195         ;;
3196         power[3-7]*)
3197             cpuflags="-mcpu=$cpu"
3198         ;;
3199         cell)
3200             cpuflags="-mcpu=cell"
3201             enable ldbrx
3202         ;;
3203         e500mc)
3204             cpuflags="-mcpu=e500mc"
3205             disable altivec
3206         ;;
3207         e500v2)
3208             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3209             disable altivec
3210             disable dcbzl
3211         ;;
3212         e500)
3213             cpuflags="-mcpu=8540 -mhard-float"
3214             disable altivec
3215             disable dcbzl
3216         ;;
3217     esac
3218
3219 elif enabled sparc; then
3220
3221     case $cpu in
3222         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3223             cpuflags="-mcpu=$cpu"
3224         ;;
3225         ultrasparc*|niagara[234])
3226             cpuflags="-mcpu=$cpu"
3227         ;;
3228     esac
3229
3230 elif enabled x86; then
3231
3232     case $cpu in
3233         i[345]86|pentium)
3234             cpuflags="-march=$cpu"
3235             disable mmx
3236         ;;
3237         # targets that do NOT support nopl and conditional mov (cmov)
3238         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3239             cpuflags="-march=$cpu"
3240             disable i686
3241         ;;
3242         # targets that do support nopl and conditional mov (cmov)
3243         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3244             cpuflags="-march=$cpu"
3245             enable i686
3246             enable fast_cmov
3247         ;;
3248         # targets that do support conditional mov but on which it's slow
3249         pentium4|pentium4m|prescott|nocona)
3250             cpuflags="-march=$cpu"
3251             enable i686
3252             disable fast_cmov
3253         ;;
3254     esac
3255
3256 fi
3257
3258 if [ "$cpu" != generic ]; then
3259     add_cflags  $cpuflags
3260     add_asflags $cpuflags
3261 fi
3262
3263 # compiler sanity check
3264 check_exec <<EOF
3265 int main(void){ return 0; }
3266 EOF
3267 if test "$?" != 0; then
3268     echo "$cc is unable to create an executable file."
3269     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3270         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3271         echo "Only do this if you know what cross compiling means."
3272     fi
3273     die "C compiler test failed."
3274 fi
3275
3276 add_cppflags -D_ISOC99_SOURCE
3277 check_cflags -std=c99
3278 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3279 #include <stdlib.h>
3280 EOF
3281 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3282 #include <stdlib.h>
3283 EOF
3284
3285 add_host_cppflags -D_ISOC99_SOURCE
3286 check_host_cflags -std=c99
3287 check_host_cflags -Wall
3288 check_host_cflags -O3
3289
3290 check_64bit(){
3291     arch32=$1
3292     arch64=$2
3293     expr=$3
3294     check_code cc "" "int test[2*($expr) - 1]" &&
3295         subarch=$arch64 || subarch=$arch32
3296 }
3297
3298 case "$arch" in
3299     aarch64|alpha|ia64)
3300         spic=$shared
3301     ;;
3302     mips)
3303         check_64bit mips mips64 '_MIPS_SIM > 1'
3304         spic=$shared
3305     ;;
3306     parisc)
3307         check_64bit parisc parisc64 'sizeof(void *) > 4'
3308         spic=$shared
3309     ;;
3310     ppc)
3311         check_64bit ppc ppc64 'sizeof(void *) > 4'
3312         spic=$shared
3313     ;;
3314     s390)
3315         check_64bit s390 s390x 'sizeof(void *) > 4'
3316         spic=$shared
3317     ;;
3318     sparc)
3319         check_64bit sparc sparc64 'sizeof(void *) > 4'
3320         spic=$shared
3321     ;;
3322     x86)
3323         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3324         if test "$subarch" = "x86_64"; then
3325             spic=$shared
3326         fi
3327     ;;
3328 esac
3329
3330 enable $subarch
3331 enabled spic && enable_weak pic
3332
3333 # OS specific
3334 case $target_os in
3335     aix)
3336         SHFLAGS=-shared
3337         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3338         enabled shared && add_ldflags -Wl,-brtl
3339         ;;
3340     haiku)
3341         prefix_default="/boot/common"
3342         network_extralibs="-lnetwork"
3343         host_libs=
3344         ;;
3345     sunos)
3346         SHFLAGS='-shared -Wl,-h,$$(@F)'
3347         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3348         network_extralibs="-lsocket -lnsl"
3349         # When using suncc to build, the Solaris linker will mark
3350         # an executable with each instruction set encountered by
3351         # the Solaris assembler.  As our libraries contain their own
3352         # guards for processor-specific code, instead suppress
3353         # generation of the HWCAPS ELF section on Solaris x86 only.
3354         enabled_all suncc x86 &&
3355             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3356             add_ldflags -Wl,-M,mapfile
3357         nm_default='nm -P -g'
3358         ;;
3359     netbsd)
3360         disable symver
3361         oss_indev_extralibs="-lossaudio"
3362         oss_outdev_extralibs="-lossaudio"
3363         ;;
3364     openbsd|bitrig)
3365         disable symver
3366         SHFLAGS='-shared'
3367         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3368         SLIB_INSTALL_LINKS=
3369         oss_indev_extralibs="-lossaudio"
3370         oss_outdev_extralibs="-lossaudio"
3371         ;;
3372     dragonfly)
3373         disable symver
3374         ;;
3375     freebsd)
3376         ;;
3377     bsd/os)
3378         add_extralibs -lpoll -lgnugetopt
3379         ;;
3380     darwin)
3381         gas="gas-preprocessor.pl $cc"
3382         enabled ppc && add_asflags -force_cpusubtype_ALL
3383         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3384         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3385         add_ldflags -Wl,-dynamic,-search_paths_first
3386         SLIBSUF=".dylib"
3387         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3388         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3389         objformat="macho"
3390         enabled x86_64 && objformat="macho64"
3391         enabled_any pic shared ||
3392             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3393         ;;
3394     mingw32*)
3395         if test $target_os = "mingw32ce"; then
3396             disable network
3397         else
3398             target_os=mingw32
3399         fi
3400         LIBTARGET=i386
3401         if enabled x86_64; then
3402             LIBTARGET="i386:x86-64"
3403         elif enabled arm; then
3404             LIBTARGET=arm-wince
3405         fi
3406         check_ldflags -Wl,--nxcompat
3407         check_ldflags -Wl,--dynamicbase
3408         shlibdir_default="$bindir_default"
3409         SLIBPREF=""
3410         SLIBSUF=".dll"
3411         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3412         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3413         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3414         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3415         SLIB_INSTALL_LINKS=
3416         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3417         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3418         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3419         objformat="win32"
3420         dlltool="${cross_prefix}dlltool"
3421         ranlib=:
3422         enable dos_paths
3423         ;;
3424     win32|win64)
3425         disable symver
3426         if enabled shared; then
3427             # Link to the import library instead of the normal static library
3428             # for shared libs.
3429             LD_LIB='%.lib'
3430             # Cannot build both shared and static libs with MSVC or icl.
3431             disable static
3432         fi
3433         shlibdir_default="$bindir_default"
3434         SLIBPREF=""
3435         SLIBSUF=".dll"
3436         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3437         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3438         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3439         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3440         SLIB_INSTALL_LINKS=
3441         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3442         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3443         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3444         objformat="win32"
3445         ranlib=:
3446         enable dos_paths
3447         ;;
3448     cygwin*)
3449         target_os=cygwin
3450         shlibdir_default="$bindir_default"
3451         SLIBPREF="cyg"
3452         SLIBSUF=".dll"
3453         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3454         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3455         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3456         SLIB_INSTALL_LINKS=
3457         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3458         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3459         objformat="win32"
3460         enable dos_paths
3461         ;;
3462     *-dos|freedos|opendos)
3463         network_extralibs="-lsocket"
3464         objformat="coff"
3465         enable dos_paths
3466         add_cppflags -U__STRICT_ANSI__
3467         ;;
3468     linux)
3469         enable dv1394
3470         ;;
3471     irix*)
3472         target_os=irix
3473         ranlib="echo ignoring ranlib"
3474         ;;
3475     os/2*)
3476         ln_s="cp -f"
3477         objformat="aout"
3478         add_cppflags -D_GNU_SOURCE
3479         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3480         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3481         LIBSUF="_s.a"
3482         SLIBPREF=""
3483         SLIBSUF=".dll"
3484         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3485         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3486         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3487             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3488             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3489             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3490             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3491             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3492         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3493             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3494         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3495         enable dos_paths
3496         ;;
3497     gnu/kfreebsd)
3498         add_cppflags -D_BSD_SOURCE
3499         ;;
3500     gnu)
3501         ;;
3502     qnx)
3503         add_cppflags -D_QNX_SOURCE
3504         network_extralibs="-lsocket"
3505         ;;
3506     symbian)
3507         SLIBSUF=".dll"
3508         enable dos_paths
3509         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3510         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3511         add_ldflags -Wl,--target1-abs,--no-undefined \
3512                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3513                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3514         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3515                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3516                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3517         ;;
3518     osf1)
3519         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3520         ;;
3521     minix)
3522         ;;
3523     plan9)
3524         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3525                      -D_REENTRANT_SOURCE        \
3526                      -D_RESEARCH_SOURCE         \
3527                      -DFD_SETSIZE=96            \
3528                      -DHAVE_SOCK_OPTS
3529         add_compat strtod.o strtod=avpriv_strtod
3530         network_extralibs='-lbsd'
3531         exeobjs=compat/plan9/main.o
3532         disable avserver
3533         cp_f='cp'
3534         ;;
3535     none)
3536         ;;
3537     *)
3538         die "Unknown OS '$target_os'."
3539         ;;
3540 esac
3541
3542 # determine libc flavour
3543
3544 probe_libc(){
3545     pfx=$1
3546     pfx_no_=${pfx%_}
3547     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3548     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3549         eval ${pfx}libc_type=uclibc
3550         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3551     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3552         eval ${pfx}libc_type=glibc
3553         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3554     # MinGW headers can be installed on Cygwin, so check for newlib first.
3555     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3556         eval ${pfx}libc_type=newlib
3557         add_${pfx}cppflags -U__STRICT_ANSI__
3558     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3559     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3560         eval ${pfx}libc_type=mingw64
3561         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3562         eval test \$${pfx_no_}cc_type = "gcc" &&
3563             add_${pfx}cppflags -D__printf__=__gnu_printf__
3564     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3565          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3566         eval ${pfx}libc_type=mingw32
3567         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3568             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3569             die "ERROR: MinGW32 runtime version must be >= 3.15."
3570         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3571         eval test \$${pfx_no_}cc_type = "gcc" &&
3572             add_${pfx}cppflags -D__printf__=__gnu_printf__
3573     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3574         eval ${pfx}libc_type=msvcrt
3575         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3576         # 0x601 by default unless something else is set by the user.
3577         # This can easily lead to us detecting functions only present
3578         # in such new versions and producing binaries requiring windows 7.0.
3579         # Therefore explicitly set the default to XP unless the user has
3580         # set something else on the command line.
3581         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3582             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3583     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3584         eval ${pfx}libc_type=klibc
3585     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3586         eval ${pfx}libc_type=bionic
3587     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3588         eval ${pfx}libc_type=solaris
3589         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3590     fi
3591 }
3592
3593 probe_libc
3594 test -n "$libc_type" && enable libc_$libc_type
3595 probe_libc host_
3596 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3597
3598 case $libc_type in
3599     bionic)
3600         add_compat strtod.o strtod=avpriv_strtod
3601         ;;
3602     msvcrt)
3603         add_compat strtod.o strtod=avpriv_strtod
3604         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3605                                      _snprintf=avpriv_snprintf  \
3606                                      vsnprintf=avpriv_vsnprintf
3607         ;;
3608 esac
3609
3610 # hacks for compiler/libc/os combinations
3611
3612 if enabled_all tms470 libc_glibc; then
3613     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3614     add_cppflags -D__USER_LABEL_PREFIX__=
3615     add_cppflags -D__builtin_memset=memset
3616     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3617     add_cflags   -pds=48    # incompatible redefinition of macro
3618 fi
3619
3620 if enabled_all ccc libc_glibc; then
3621     add_ldflags -Wl,-z,now  # calls to libots crash without this
3622 fi
3623
3624 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3625     add_cppflags '-I\$(SRC_PATH)/compat/float'
3626
3627 esc(){
3628     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3629 }
3630
3631 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3632
3633 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3634
3635 set_default $PATHS_LIST
3636 set_default nm
3637
3638 # we need to build at least one lib type
3639 if ! enabled_any static shared; then
3640     cat <<EOF
3641 At least one library type must be built.
3642 Specify --enable-static to build the static libraries or --enable-shared to
3643 build the shared libraries as well. To only build the shared libraries specify
3644 --disable-static in addition to --enable-shared.
3645 EOF
3646     exit 1;
3647 fi
3648
3649 die_license_disabled() {
3650     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3651 }
3652
3653 die_license_disabled gpl libcdio
3654 die_license_disabled gpl libx264
3655 die_license_disabled gpl libx265
3656 die_license_disabled gpl libxavs
3657 die_license_disabled gpl libxvid
3658 die_license_disabled gpl x11grab
3659
3660 die_license_disabled nonfree libfaac
3661 die_license_disabled nonfree libfdk_aac
3662 die_license_disabled nonfree openssl
3663
3664 die_license_disabled version3 libopencore_amrnb
3665 die_license_disabled version3 libopencore_amrwb
3666 die_license_disabled version3 libvo_aacenc
3667 die_license_disabled version3 libvo_amrwbenc
3668
3669 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3670
3671 disabled optimizations || check_cflags -fomit-frame-pointer
3672
3673 enable_weak_pic() {
3674     disabled pic && return
3675     enable pic
3676     add_cppflags -DPIC
3677     case "$target_os" in
3678     mingw*|cygwin*)
3679         ;;
3680     *)
3681         add_cflags -fPIC
3682         ;;
3683     esac
3684     add_asflags  -fPIC
3685 }
3686
3687 enabled pic && enable_weak_pic
3688
3689 check_cc <<EOF || die "Symbol mangling check failed."
3690 int ff_extern;
3691 EOF
3692 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3693 extern_prefix=${sym%%ff_extern*}
3694
3695 check_cc <<EOF && enable_weak inline_asm
3696 void foo(void) { __asm__ volatile ("" ::); }
3697 EOF
3698
3699 _restrict=
3700 for restrict_keyword in restrict __restrict__ __restrict; do
3701     check_cc <<EOF && _restrict=$restrict_keyword && break
3702 void foo(char * $restrict_keyword p);
3703 EOF
3704 done
3705
3706 check_cc <<EOF && enable pragma_deprecated
3707 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3708 EOF
3709
3710 check_cc <<EOF && enable attribute_packed
3711 struct { int x; } __attribute__((packed)) x;
3712 EOF
3713
3714 check_cc <<EOF && enable attribute_may_alias
3715 union { int x; } __attribute__((may_alias)) x;
3716 EOF
3717
3718 check_cc <<EOF || die "endian test failed"
3719 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3720 EOF
3721 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3722
3723 check_inline_asm inline_asm_labels '"1:\n"'
3724
3725 if enabled aarch64; then
3726     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3727     # internal assembler in clang 3.3 does not support this instruction
3728     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3729     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3730
3731     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3732
3733 elif enabled alpha; then
3734
3735     check_cflags -mieee
3736
3737 elif enabled arm; then
3738
3739     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3740     enabled thumb && check_cflags -mthumb || check_cflags -marm
3741     nogas=die
3742
3743     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3744         enable vfp_args
3745     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3746         case "${cross_prefix:-$cc}" in
3747             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3748             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3749 __asm__ (".eabi_attribute 28, 1");
3750 int main(void) { return 0; }
3751 EOF
3752         esac
3753         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3754     fi
3755
3756     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3757     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3758     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3759     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3760     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3761     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3762
3763     [ $target_os = linux ] ||
3764         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3765             $ARCH_EXT_LIST_ARM
3766
3767     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3768
3769     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3770
3771 elif enabled mips; then
3772
3773     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3774
3775 elif enabled parisc; then
3776
3777     if enabled gcc; then
3778         case $($cc -dumpversion) in
3779             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3780         esac
3781     fi
3782
3783 elif enabled ppc; then
3784
3785     enable local_aligned_8 local_aligned_16
3786
3787     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3788     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3789     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3790     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3791
3792     # AltiVec flags: The FSF version of GCC differs from the Apple version
3793     if enabled altivec; then
3794         nogas=warn
3795         check_cflags -maltivec -mabi=altivec &&
3796         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3797         check_cflags -faltivec
3798
3799         # check if our compiler supports Motorola AltiVec C API
3800         check_cc <<EOF || disable altivec
3801 $inc_altivec_h
3802 int main(void) {
3803     vector signed int v1 = (vector signed int) { 0 };
3804     vector signed int v2 = (vector signed int) { 1 };
3805     v1 = vec_add(v1, v2);
3806     return 0;
3807 }
3808 EOF
3809
3810         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3811     fi
3812
3813 elif enabled x86; then
3814
3815     check_builtin rdtsc    intrin.h   "__rdtsc()"
3816     check_builtin mm_empty mmintrin.h "_mm_empty()"
3817
3818     enable local_aligned_8 local_aligned_16
3819
3820     # check whether EBP is available on x86
3821     # As 'i' is stored on the stack, this program will crash
3822     # if the base pointer is used to access it because the
3823     # base pointer is cleared in the inline assembly code.
3824     check_exec_crash <<EOF && enable ebp_available
3825 volatile int i=0;
3826 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3827 return i;
3828 EOF
3829
3830     # check whether EBX is available on x86
3831     check_inline_asm ebx_available '""::"b"(0)' &&
3832         check_inline_asm ebx_available '"":::"%ebx"'
3833
3834     # check whether xmm clobbers are supported
3835     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3836
3837     # check whether binutils is new enough to compile SSSE3/MMXEXT
3838     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3839     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3840
3841     if ! disabled_any asm mmx yasm; then
3842         if check_cmd $yasmexe --version; then
3843             enabled x86_64 && yasm_extra="-m amd64"
3844             yasm_debug="-g dwarf2"
3845         elif check_cmd nasm -v; then
3846             yasmexe=nasm
3847             yasm_debug="-g -F dwarf"
3848             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3849         fi
3850
3851         YASMFLAGS="-f $objformat $yasm_extra"
3852         enabled pic               && append YASMFLAGS "-DPIC"
3853         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3854         case "$objformat" in
3855             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3856         esac
3857
3858         check_yasm "movbe ecx, [5]" && enable yasm ||
3859             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3860         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3861         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3862         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3863         check_yasm "CPU amdnop" || disable cpunop
3864     fi
3865
3866     case "$cpu" in
3867         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3868             disable fast_clz
3869         ;;
3870     esac
3871
3872 fi
3873
3874 if enabled asm; then
3875     as=${gas:=$as}
3876     check_as <<EOF && enable gnu_as || \
3877         $nogas "GNU assembler not found, install gas-preprocessor"
3878 .macro m n
3879 \n: .int 0
3880 .endm
3881 m x
3882 EOF
3883 fi
3884
3885 check_ldflags -Wl,--as-needed
3886
3887 if check_func dlopen; then
3888     ldl=
3889 elif check_func dlopen -ldl; then
3890     ldl=-ldl
3891 fi
3892
3893 if ! disabled network; then
3894     check_func getaddrinfo $network_extralibs
3895     check_func getservbyport $network_extralibs
3896     check_func inet_aton $network_extralibs
3897
3898     check_type netdb.h "struct addrinfo"
3899     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3900     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3901     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3902     check_type poll.h "struct pollfd"
3903     check_type netinet/sctp.h "struct sctp_event_subscribe"
3904     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3905     check_type netinet/in.h "struct sockaddr_in6"
3906     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3907     check_type "sys/types.h sys/socket.h" socklen_t
3908
3909     # Prefer arpa/inet.h over winsock2
3910     if check_header arpa/inet.h ; then
3911         check_func closesocket
3912     elif check_header winsock2.h ; then
3913         check_func_headers winsock2.h closesocket -lws2 &&
3914             network_extralibs="-lws2" ||
3915         { check_func_headers winsock2.h closesocket -lws2_32 &&
3916             network_extralibs="-lws2_32"; } || disable winsock2_h network
3917         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3918
3919         check_type ws2tcpip.h socklen_t
3920         check_type ws2tcpip.h "struct addrinfo"
3921         check_type ws2tcpip.h "struct group_source_req"
3922         check_type ws2tcpip.h "struct ip_mreq_source"
3923         check_type ws2tcpip.h "struct ipv6_mreq"
3924         check_type winsock2.h "struct pollfd"
3925         check_struct winsock2.h "struct sockaddr" sa_len
3926         check_type ws2tcpip.h "struct sockaddr_in6"
3927         check_type ws2tcpip.h "struct sockaddr_storage"
3928     else
3929         disable network
3930     fi
3931 fi
3932
3933 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3934 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3935 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3936 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3937
3938 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3939 check_func  ${malloc_prefix}memalign            && enable memalign
3940 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3941
3942 check_func  fcntl
3943 check_func  fork
3944 check_func  gethrtime
3945 check_func  getopt
3946 check_func  getrusage
3947 check_func  gettimeofday
3948 check_func  isatty
3949 check_func  localtime_r
3950 check_func  mach_absolute_time
3951 check_func  mkstemp
3952 check_func  mmap
3953 check_func  mprotect
3954 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3955 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3956 check_func  sched_getaffinity
3957 check_func  setrlimit
3958 check_func  strerror_r
3959 check_func  strptime
3960 check_func  sysconf
3961 check_func  sysctl
3962 check_func  usleep
3963
3964 check_func_headers io.h setmode
3965 check_func_headers stdlib.h getenv
3966
3967 check_func_headers windows.h CoTaskMemFree -lole32
3968 check_func_headers windows.h GetProcessAffinityMask
3969 check_func_headers windows.h GetProcessTimes
3970 check_func_headers windows.h GetSystemTimeAsFileTime
3971 check_func_headers windows.h MapViewOfFile
3972 check_func_headers windows.h SetConsoleTextAttribute
3973 check_func_headers windows.h Sleep
3974 check_func_headers windows.h VirtualAlloc
3975
3976 check_header direct.h
3977 check_header dlfcn.h
3978 check_header dxva.h
3979 check_header dxva2api.h
3980 check_header io.h
3981 check_header mach/mach_time.h
3982 check_header malloc.h
3983 check_header poll.h
3984 check_header sys/mman.h
3985 check_header sys/param.h
3986 check_header sys/resource.h
3987 check_header sys/select.h
3988 check_header sys/time.h
3989 check_header sys/un.h
3990 check_header unistd.h
3991 check_header vdpau/vdpau.h
3992 check_header vdpau/vdpau_x11.h
3993 check_header VideoDecodeAcceleration/VDADecoder.h
3994 check_header windows.h
3995 check_header X11/extensions/XvMClib.h
3996
3997 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3998 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3999 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4000
4001 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4002
4003 if ! disabled w32threads && ! enabled pthreads; then
4004     check_func_headers "windows.h process.h" _beginthreadex &&
4005         enable w32threads || disable w32threads
4006 fi
4007
4008 # check for some common methods of building with pthread support
4009 # do this before the optional library checks as some of them require pthreads
4010 if ! disabled pthreads && ! enabled w32threads; then
4011     enable pthreads
4012     if check_func pthread_join -pthread; then
4013         add_cflags -pthread
4014         add_extralibs -pthread
4015     elif check_func pthread_join -pthreads; then
4016         add_cflags -pthreads
4017         add_extralibs -pthreads
4018     elif check_func pthread_join -lpthreadGC2; then
4019         add_extralibs -lpthreadGC2
4020     elif check_lib pthread.h pthread_join -lpthread; then
4021         :
4022     elif ! check_func pthread_join; then
4023         disable pthreads
4024     fi
4025 fi
4026
4027 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4028 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4029
4030 check_lib math.h sin -lm && LIBM="-lm"
4031 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4032
4033 atan2f_args=2
4034 ldexpf_args=2
4035 powf_args=2
4036
4037 for func in $MATH_FUNCS; do
4038     eval check_mathfunc $func \${${func}_args:-1}
4039 done
4040
4041 # these are off by default, so fail if requested and not available
4042 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4043                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4044                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4045 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4046 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4047 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4048 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4049 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4050 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4051 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4052 enabled libgsm            &&&n