configure: Suggest upgrading gas-preprocessor instead of just installing
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105
106 Program options:
107   --disable-programs       do not build command line programs
108   --disable-avconv         disable avconv build
109   --disable-avplay         disable avplay build
110   --disable-avprobe        disable avprobe build
111   --disable-avserver       deprecated, does nothing
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-avdevice       disable libavdevice build
116   --disable-avcodec        disable libavcodec build
117   --disable-avformat       disable libavformat build
118   --disable-avutil         disable libavutil build
119   --disable-swscale        disable libswscale build
120   --disable-avfilter       disable video filter support [no]
121   --disable-avresample     disable libavresample build [no]
122   --disable-pthreads       disable pthreads [auto]
123   --disable-w32threads     disable Win32 threads [auto]
124   --disable-network        disable network support [no]
125   --disable-dct            disable DCT code
126   --disable-error-resilience disable error resilience code
127   --disable-lsp            disable LSP code
128   --disable-lzo            disable LZO decoder code
129   --disable-mdct           disable MDCT code
130   --disable-rdft           disable RDFT code
131   --disable-fft            disable FFT code
132
133 Hardware accelerators:
134   --enable-dxva2           enable DXVA2 code
135   --enable-vaapi           enable VAAPI code
136   --enable-vda             enable VDA code
137   --enable-vdpau           enable VDPAU code
138
139 Individual component options:
140   --disable-everything     disable all components listed below
141   --disable-encoder=NAME   disable encoder NAME
142   --enable-encoder=NAME    enable encoder NAME
143   --disable-encoders       disable all encoders
144   --disable-decoder=NAME   disable decoder NAME
145   --enable-decoder=NAME    enable decoder NAME
146   --disable-decoders       disable all decoders
147   --disable-hwaccel=NAME   disable hwaccel NAME
148   --enable-hwaccel=NAME    enable hwaccel NAME
149   --disable-hwaccels       disable all hwaccels
150   --disable-muxer=NAME     disable muxer NAME
151   --enable-muxer=NAME      enable muxer NAME
152   --disable-muxers         disable all muxers
153   --disable-demuxer=NAME   disable demuxer NAME
154   --enable-demuxer=NAME    enable demuxer NAME
155   --disable-demuxers       disable all demuxers
156   --enable-parser=NAME     enable parser NAME
157   --disable-parser=NAME    disable parser NAME
158   --disable-parsers        disable all parsers
159   --enable-bsf=NAME        enable bitstream filter NAME
160   --disable-bsf=NAME       disable bitstream filter NAME
161   --disable-bsfs           disable all bitstream filters
162   --enable-protocol=NAME   enable protocol NAME
163   --disable-protocol=NAME  disable protocol NAME
164   --disable-protocols      disable all protocols
165   --enable-indev=NAME      enable input device NAME
166   --disable-indev=NAME     disable input device NAME
167   --disable-indevs         disable input devices
168   --enable-outdev=NAME     enable output device NAME
169   --disable-outdev=NAME    disable output device NAME
170   --disable-outdevs        disable output devices
171   --disable-devices        disable all devices
172   --enable-filter=NAME     enable filter NAME
173   --disable-filter=NAME    disable filter NAME
174   --disable-filters        disable all filters
175
176 External library support:
177   --enable-avisynth        enable reading of AviSynth script files [no]
178   --enable-bzlib           enable bzlib [autodetect]
179   --enable-frei0r          enable frei0r video filtering
180   --enable-gnutls          enable gnutls [no]
181   --enable-libbs2b         enable bs2b DSP library [no]
182   --enable-libcdio         enable audio CD grabbing with libcdio
183   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
184                            and libraw1394 [no]
185   --enable-libfaac         enable AAC encoding via libfaac [no]
186   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
187   --enable-libfreetype     enable libfreetype [no]
188   --enable-libgsm          enable GSM de/encoding via libgsm [no]
189   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
190   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
191   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
192   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
193   --enable-libopencv       enable video filtering via libopencv [no]
194   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
195   --enable-libopus         enable Opus de/encoding via libopus [no]
196   --enable-libpulse        enable Pulseaudio input via libpulse [no]
197   --enable-librtmp         enable RTMP[E] support via librtmp [no]
198   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
199   --enable-libspeex        enable Speex de/encoding via libspeex [no]
200   --enable-libtheora       enable Theora encoding via libtheora [no]
201   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
202   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
203   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
204   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
205   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
206   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
207   --enable-libwebp         enable WebP encoding via libwebp [no]
208   --enable-libx264         enable H.264 encoding via x264 [no]
209   --enable-libx265         enable HEVC encoding via x265 [no]
210   --enable-libxavs         enable AVS encoding via xavs [no]
211   --enable-libxvid         enable Xvid encoding via xvidcore,
212                            native MPEG-4/Xvid encoder exists [no]
213   --enable-openssl         enable openssl [no]
214   --enable-x11grab         enable X11 grabbing [no]
215   --enable-zlib            enable zlib [autodetect]
216
217 Toolchain options:
218   --arch=ARCH              select architecture [$arch]
219   --cpu=CPU                select the minimum required CPU (affects
220                            instruction selection, may crash on older CPUs)
221   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
222   --enable-cross-compile   assume a cross-compiler is used
223   --sysroot=PATH           root of cross-build tree
224   --sysinclude=PATH        location of cross-build system headers
225   --target-os=OS           compiler targets OS [$target_os]
226   --target-exec=CMD        command to run executables on target
227   --target-path=DIR        path to view of build directory on target
228   --target-samples=DIR     path to samples directory on target
229   --toolchain=NAME         set tool defaults according to NAME
230   --nm=NM                  use nm tool
231   --ar=AR                  use archive tool AR [$ar_default]
232   --as=AS                  use assembler AS [$as_default]
233   --cc=CC                  use C compiler CC [$cc_default]
234   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
235   --ld=LD                  use linker LD
236   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
237   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
238   --host-cc=HOSTCC         use host C compiler HOSTCC
239   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
240   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
241   --host-ld=HOSTLD         use host linker HOSTLD
242   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
243   --host-libs=HLIBS        use libs HLIBS when linking for host
244   --host-os=OS             compiler host OS [$target_os]
245   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
246   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
247   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
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 assembly 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 assembly
290   --disable-yasm           disable use of nasm/yasm assembly
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_ldexeflags(){
684     append LDEXEFLAGS $($ldflags_filter "$@")
685 }
686
687 add_stripflags(){
688     append STRIPFLAGS "$@"
689 }
690
691 add_extralibs(){
692     prepend extralibs $($ldflags_filter "$@")
693 }
694
695 add_host_cppflags(){
696     append host_cppflags "$@"
697 }
698
699 add_host_cflags(){
700     append host_cflags $($host_cflags_filter "$@")
701 }
702
703 add_host_ldflags(){
704     append host_ldflags $($host_ldflags_filter "$@")
705 }
706
707 add_compat(){
708     append compat_objs $1
709     shift
710     map 'add_cppflags -D$v' "$@"
711 }
712
713 check_cmd(){
714     log "$@"
715     "$@" >> $logfile 2>&1
716 }
717
718 cc_o(){
719     eval printf '%s\\n' $CC_O
720 }
721
722 cc_e(){
723     eval printf '%s\\n' $CC_E
724 }
725
726 check_cc(){
727     log check_cc "$@"
728     cat > $TMPC
729     log_file $TMPC
730     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
731 }
732
733 check_cpp(){
734     log check_cpp "$@"
735     cat > $TMPC
736     log_file $TMPC
737     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
738 }
739
740 as_o(){
741     eval printf '%s\\n' $AS_O
742 }
743
744 check_as(){
745     log check_as "$@"
746     cat > $TMPS
747     log_file $TMPS
748     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
749 }
750
751 check_inline_asm(){
752     log check_inline_asm "$@"
753     name="$1"
754     code="$2"
755     shift 2
756     disable $name
757     check_cc "$@" <<EOF && enable $name
758 void foo(void){ __asm__ volatile($code); }
759 EOF
760 }
761
762 check_insn(){
763     log check_insn "$@"
764     check_inline_asm ${1}_inline "\"$2\""
765     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
766 }
767
768 check_yasm(){
769     log check_yasm "$@"
770     echo "$1" > $TMPS
771     log_file $TMPS
772     shift 1
773     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
774 }
775
776 ld_o(){
777     eval printf '%s\\n' $LD_O
778 }
779
780 check_ld(){
781     log check_ld "$@"
782     flags=$(filter_out '-l*' "$@")
783     libs=$(filter '-l*' "$@")
784     check_cc $($cflags_filter $flags) || return
785     flags=$($ldflags_filter $flags)
786     libs=$($ldflags_filter $libs)
787     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
788 }
789
790 print_include(){
791     hdr=$1
792     test "${hdr%.h}" = "${hdr}" &&
793         echo "#include $hdr"    ||
794         echo "#include <$hdr>"
795 }
796
797 check_code(){
798     log check_code "$@"
799     check=$1
800     headers=$2
801     code=$3
802     shift 3
803     {
804         for hdr in $headers; do
805             print_include $hdr
806         done
807         echo "int main(void) { $code; return 0; }"
808     } | check_$check "$@"
809 }
810
811 check_cppflags(){
812     log check_cppflags "$@"
813     check_cc "$@" <<EOF && append CPPFLAGS "$@"
814 int x;
815 EOF
816 }
817
818 test_cflags(){
819     log test_cflags "$@"
820     set -- $($cflags_filter "$@")
821     check_cc "$@" <<EOF
822 int x;
823 EOF
824 }
825
826 check_cflags(){
827     log check_cflags "$@"
828     test_cflags "$@" && add_cflags "$@"
829 }
830
831 test_ldflags(){
832     log test_ldflags "$@"
833     check_ld "$@" <<EOF
834 int main(void){ return 0; }
835 EOF
836 }
837
838 check_ldflags(){
839     log check_ldflags "$@"
840     test_ldflags "$@" && add_ldflags "$@"
841 }
842
843 test_stripflags(){
844     log test_stripflags "$@"
845     # call check_cc to get a fresh TMPO
846     check_cc <<EOF
847 int main(void) { return 0; }
848 EOF
849     check_cmd $strip $STRIPFLAGS "$@" $TMPO
850 }
851
852 check_stripflags(){
853     log check_stripflags "$@"
854     test_stripflags "$@" && add_stripflags "$@"
855 }
856
857 check_header(){
858     log check_header "$@"
859     header=$1
860     shift
861     disable_safe $header
862     check_cpp "$@" <<EOF && enable_safe $header
863 #include <$header>
864 int x;
865 EOF
866 }
867
868 check_func(){
869     log check_func "$@"
870     func=$1
871     shift
872     disable $func
873     check_ld "$@" <<EOF && enable $func
874 extern int $func();
875 int main(void){ $func(); }
876 EOF
877 }
878
879 check_mathfunc(){
880     log check_mathfunc "$@"
881     func=$1
882     narg=$2
883     shift 2
884     test $narg = 2 && args="f, g" || args="f"
885     disable $func
886     check_ld "$@" <<EOF && enable $func
887 #include <math.h>
888 float foo(float f, float g) { return $func($args); }
889 int main(void){ return 0; }
890 EOF
891 }
892
893 check_func_headers(){
894     log check_func_headers "$@"
895     headers=$1
896     funcs=$2
897     shift 2
898     {
899         for hdr in $headers; do
900             print_include $hdr
901         done
902         for func in $funcs; do
903             echo "long check_$func(void) { return (long) $func; }"
904         done
905         echo "int main(void) { return 0; }"
906     } | check_ld "$@" && enable $funcs && enable_safe $headers
907 }
908
909 check_cpp_condition(){
910     log check_cpp_condition "$@"
911     header=$1
912     condition=$2
913     shift 2
914     check_cpp "$@" <<EOF
915 #include <$header>
916 #if !($condition)
917 #error "unsatisfied condition: $condition"
918 #endif
919 EOF
920 }
921
922 check_lib(){
923     log check_lib "$@"
924     header="$1"
925     func="$2"
926     shift 2
927     check_header $header && check_func $func "$@" && add_extralibs "$@"
928 }
929
930 check_lib2(){
931     log check_lib2 "$@"
932     headers="$1"
933     funcs="$2"
934     shift 2
935     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
936 }
937
938 check_pkg_config(){
939     log check_pkg_config "$@"
940     pkg="$1"
941     headers="$2"
942     funcs="$3"
943     shift 3
944     check_cmd $pkg_config --exists --print-errors $pkg || return
945     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
946     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
947     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
948         set_safe ${pkg}_cflags $pkg_cflags   &&
949         set_safe ${pkg}_libs   $pkg_libs
950 }
951
952 check_exec(){
953     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
954 }
955
956 check_exec_crash(){
957     code=$(cat)
958
959     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
960     # are safe but may not be available everywhere.  Thus we use
961     # raise(SIGTERM) instead.  The check is run in a subshell so we
962     # can redirect the "Terminated" message from the shell.  SIGBUS
963     # is not defined by standard C so it is used conditionally.
964
965     (check_exec "$@") >> $logfile 2>&1 <<EOF
966 #include <signal.h>
967 static void sighandler(int sig){
968     raise(SIGTERM);
969 }
970 int foo(void){
971     $code
972 }
973 int (*func_ptr)(void) = foo;
974 int main(void){
975     signal(SIGILL, sighandler);
976     signal(SIGFPE, sighandler);
977     signal(SIGSEGV, sighandler);
978 #ifdef SIGBUS
979     signal(SIGBUS, sighandler);
980 #endif
981     return func_ptr();
982 }
983 EOF
984 }
985
986 check_type(){
987     log check_type "$@"
988     headers=$1
989     type=$2
990     shift 2
991     disable_safe "$type"
992     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
993 }
994
995 check_struct(){
996     log check_struct "$@"
997     headers=$1
998     struct=$2
999     member=$3
1000     shift 3
1001     disable_safe "${struct}_${member}"
1002     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1003         enable_safe "${struct}_${member}"
1004 }
1005
1006 check_builtin(){
1007     log check_builtin "$@"
1008     name=$1
1009     headers=$2
1010     builtin=$3
1011     shift 3
1012     disable "$name"
1013     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1014 }
1015
1016 check_compile_assert(){
1017     log check_compile_assert "$@"
1018     name=$1
1019     headers=$2
1020     condition=$3
1021     shift 3
1022     disable "$name"
1023     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1024 }
1025
1026 require(){
1027     name="$1"
1028     header="$2"
1029     func="$3"
1030     shift 3
1031     check_lib $header $func "$@" || die "ERROR: $name not found"
1032 }
1033
1034 require2(){
1035     name="$1"
1036     headers="$2"
1037     func="$3"
1038     shift 3
1039     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1040 }
1041
1042 require_pkg_config(){
1043     pkg="$1"
1044     check_pkg_config "$@" || die "ERROR: $pkg not found"
1045     add_cflags    $(get_safe ${pkg}_cflags)
1046     add_extralibs $(get_safe ${pkg}_libs)
1047 }
1048
1049 hostcc_e(){
1050     eval printf '%s\\n' $HOSTCC_E
1051 }
1052
1053 hostcc_o(){
1054     eval printf '%s\\n' $HOSTCC_O
1055 }
1056
1057 check_host_cc(){
1058     log check_host_cc "$@"
1059     cat > $TMPC
1060     log_file $TMPC
1061     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1062 }
1063
1064 check_host_cpp(){
1065     log check_host_cpp "$@"
1066     cat > $TMPC
1067     log_file $TMPC
1068     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1069 }
1070
1071 check_host_cppflags(){
1072     log check_host_cppflags "$@"
1073     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1074 int x;
1075 EOF
1076 }
1077
1078 check_host_cflags(){
1079     log check_host_cflags "$@"
1080     set -- $($host_cflags_filter "$@")
1081     check_host_cc "$@" <<EOF && append host_cflags "$@"
1082 int x;
1083 EOF
1084 }
1085
1086 check_host_cpp_condition(){
1087     log check_host_cpp_condition "$@"
1088     header=$1
1089     condition=$2
1090     shift 2
1091     check_host_cpp "$@" <<EOF
1092 #include <$header>
1093 #if !($condition)
1094 #error "unsatisfied condition: $condition"
1095 #endif
1096 EOF
1097 }
1098
1099 apply(){
1100     file=$1
1101     shift
1102     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1103 }
1104
1105 cp_if_changed(){
1106     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1107     mkdir -p "$(dirname $2)"
1108     $cp_f "$1" "$2"
1109 }
1110
1111 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1112 # system-dependent things.
1113
1114 COMPONENT_LIST="
1115     bsfs
1116     decoders
1117     demuxers
1118     encoders
1119     filters
1120     hwaccels
1121     indevs
1122     muxers
1123     outdevs
1124     parsers
1125     protocols
1126 "
1127
1128 EXAMPLE_LIST="
1129     avcodec_example
1130     filter_audio_example
1131     metadata_example
1132     output_example
1133     transcode_aac_example
1134 "
1135
1136 EXTERNAL_LIBRARY_LIST="
1137     avisynth
1138     bzlib
1139     frei0r
1140     gnutls
1141     libbs2b
1142     libcdio
1143     libdc1394
1144     libfaac
1145     libfdk_aac
1146     libfontconfig
1147     libfreetype
1148     libgsm
1149     libilbc
1150     libmp3lame
1151     libopencore_amrnb
1152     libopencore_amrwb
1153     libopencv
1154     libopenjpeg
1155     libopus
1156     libpulse
1157     librtmp
1158     libschroedinger
1159     libspeex
1160     libtheora
1161     libtwolame
1162     libvo_aacenc
1163     libvo_amrwbenc
1164     libvorbis
1165     libvpx
1166     libwavpack
1167     libwebp
1168     libx264
1169     libx265
1170     libxavs
1171     libxvid
1172     openssl
1173     x11grab
1174     zlib
1175 "
1176
1177 FEATURE_LIST="
1178     gray
1179     hardcoded_tables
1180     runtime_cpudetect
1181     safe_bitstream_reader
1182     shared
1183     small
1184     sram
1185     static
1186     swscale_alpha
1187 "
1188
1189 HWACCEL_LIST="
1190     dxva2
1191     vaapi
1192     vda
1193     vdpau
1194 "
1195
1196 LIBRARY_LIST="
1197     avcodec
1198     avdevice
1199     avfilter
1200     avformat
1201     avresample
1202     avutil
1203     swscale
1204 "
1205
1206 LICENSE_LIST="
1207     gpl
1208     nonfree
1209     version3
1210 "
1211
1212 PROGRAM_LIST="
1213     avconv
1214     avplay
1215     avprobe
1216 "
1217
1218 SUBSYSTEM_LIST="
1219     dct
1220     doc
1221     error_resilience
1222     fft
1223     lsp
1224     lzo
1225     mdct
1226     network
1227     rdft
1228 "
1229
1230 CONFIG_LIST="
1231     $COMPONENT_LIST
1232     $EXAMPLE_LIST
1233     $EXTERNAL_LIBRARY_LIST
1234     $FEATURE_LIST
1235     $HWACCEL_LIST
1236     $LICENSE_LIST
1237     $LIBRARY_LIST
1238     $PROGRAM_LIST
1239     $SUBSYSTEM_LIST
1240     memalign_hack
1241     neon_clobber_test
1242     pic
1243     pod2man
1244     texi2html
1245     thumb
1246     xmm_clobber_test
1247 "
1248
1249 THREADS_LIST="
1250     pthreads
1251     w32threads
1252 "
1253
1254 ATOMICS_LIST="
1255     atomics_gcc
1256     atomics_suncc
1257     atomics_win32
1258 "
1259
1260 ARCH_LIST="
1261     aarch64
1262     alpha
1263     arm
1264     avr32
1265     avr32_ap
1266     avr32_uc
1267     bfin
1268     ia64
1269     m68k
1270     mips
1271     mips64
1272     parisc
1273     ppc
1274     ppc64
1275     s390
1276     sh4
1277     sparc
1278     sparc64
1279     tilegx
1280     tilepro
1281     tomi
1282     x86
1283     x86_32
1284     x86_64
1285 "
1286
1287 ARCH_EXT_LIST_ARM="
1288     armv5te
1289     armv6
1290     armv6t2
1291     armv8
1292     neon
1293     vfp
1294     vfpv3
1295 "
1296
1297 ARCH_EXT_LIST_X86_SIMD="
1298     amd3dnow
1299     amd3dnowext
1300     avx
1301     avx2
1302     fma3
1303     fma4
1304     mmx
1305     mmxext
1306     sse
1307     sse2
1308     sse3
1309     sse4
1310     sse42
1311     ssse3
1312     xop
1313 "
1314
1315 ARCH_EXT_LIST_PPC="
1316     altivec
1317     dcbzl
1318     ldbrx
1319     ppc4xx
1320 "
1321
1322 ARCH_EXT_LIST_X86="
1323     $ARCH_EXT_LIST_X86_SIMD
1324     cpunop
1325     i686
1326 "
1327
1328 ARCH_EXT_LIST="
1329     $ARCH_EXT_LIST_ARM
1330     $ARCH_EXT_LIST_PPC
1331     $ARCH_EXT_LIST_X86
1332     loongson
1333     vis
1334 "
1335
1336 ARCH_FEATURES="
1337     aligned_stack
1338     fast_64bit
1339     fast_clz
1340     fast_cmov
1341     local_aligned_8
1342     local_aligned_16
1343     simd_align_16
1344 "
1345
1346 BUILTIN_LIST="
1347     atomic_cas_ptr
1348     machine_rw_barrier
1349     MemoryBarrier
1350     mm_empty
1351     rdtsc
1352     sync_val_compare_and_swap
1353 "
1354 HAVE_LIST_CMDLINE="
1355     inline_asm
1356     symver
1357     yasm
1358 "
1359
1360 HAVE_LIST_PUB="
1361     bigendian
1362     fast_unaligned
1363 "
1364
1365 HEADERS_LIST="
1366     alsa_asoundlib_h
1367     altivec_h
1368     arpa_inet_h
1369     cdio_paranoia_h
1370     cdio_paranoia_paranoia_h
1371     dev_bktr_ioctl_bt848_h
1372     dev_bktr_ioctl_meteor_h
1373     dev_ic_bt8xx_h
1374     dev_video_bktr_ioctl_bt848_h
1375     dev_video_meteor_ioctl_meteor_h
1376     direct_h
1377     dlfcn_h
1378     dxva_h
1379     gsm_h
1380     io_h
1381     mach_mach_time_h
1382     machine_ioctl_bt848_h
1383     machine_ioctl_meteor_h
1384     malloc_h
1385     poll_h
1386     sndio_h
1387     soundcard_h
1388     sys_mman_h
1389     sys_param_h
1390     sys_resource_h
1391     sys_select_h
1392     sys_soundcard_h
1393     sys_time_h
1394     sys_un_h
1395     sys_videoio_h
1396     unistd_h
1397     windows_h
1398     winsock2_h
1399 "
1400
1401 INTRINSICS_LIST="
1402     intrinsics_neon
1403 "
1404
1405 MATH_FUNCS="
1406     atanf
1407     atan2f
1408     cbrtf
1409     cosf
1410     exp2
1411     exp2f
1412     expf
1413     isinf
1414     isnan
1415     ldexpf
1416     llrint
1417     llrintf
1418     log2
1419     log2f
1420     log10f
1421     lrint
1422     lrintf
1423     powf
1424     rint
1425     round
1426     roundf
1427     sinf
1428     trunc
1429     truncf
1430 "
1431
1432 SYSTEM_FUNCS="
1433     aligned_malloc
1434     closesocket
1435     CommandLineToArgvW
1436     CoTaskMemFree
1437     CryptGenRandom
1438     dlopen
1439     fcntl
1440     flt_lim
1441     fork
1442     getaddrinfo
1443     gethrtime
1444     getopt
1445     GetProcessAffinityMask
1446     GetProcessMemoryInfo
1447     GetProcessTimes
1448     getrusage
1449     getservbyport
1450     GetSystemTimeAsFileTime
1451     gettimeofday
1452     inet_aton
1453     isatty
1454     jack_port_get_latency_range
1455     localtime_r
1456     mach_absolute_time
1457     MapViewOfFile
1458     memalign
1459     mkstemp
1460     mmap
1461     mprotect
1462     nanosleep
1463     posix_memalign
1464     sched_getaffinity
1465     SetConsoleTextAttribute
1466     setmode
1467     setrlimit
1468     Sleep
1469     strerror_r
1470     strptime
1471     sysconf
1472     sysctl
1473     usleep
1474     VirtualAlloc
1475 "
1476
1477 TOOLCHAIN_FEATURES="
1478     as_dn_directive
1479     as_func
1480     asm_mod_q
1481     attribute_may_alias
1482     attribute_packed
1483     ebp_available
1484     ebx_available
1485     gnu_as
1486     ibm_asm
1487     inline_asm_labels
1488     pragma_deprecated
1489     symver_asm_label
1490     symver_gnu_asm
1491     vfp_args
1492     xform_asm
1493     xmm_clobbers
1494 "
1495
1496 TYPES_LIST="
1497     socklen_t
1498     struct_addrinfo
1499     struct_group_source_req
1500     struct_ip_mreq_source
1501     struct_ipv6_mreq
1502     struct_pollfd
1503     struct_rusage_ru_maxrss
1504     struct_sockaddr_in6
1505     struct_sockaddr_sa_len
1506     struct_sockaddr_storage
1507     struct_v4l2_frmivalenum_discrete
1508 "
1509
1510 HAVE_LIST="
1511     $ARCH_EXT_LIST
1512     $(add_suffix _external $ARCH_EXT_LIST)
1513     $(add_suffix _inline   $ARCH_EXT_LIST)
1514     $ARCH_FEATURES
1515     $ATOMICS_LIST
1516     $BUILTIN_LIST
1517     $HAVE_LIST_CMDLINE
1518     $HAVE_LIST_PUB
1519     $HEADERS_LIST
1520     $INTRINSICS_LIST
1521     $MATH_FUNCS
1522     $SYSTEM_FUNCS
1523     $THREADS_LIST
1524     $TOOLCHAIN_FEATURES
1525     $TYPES_LIST
1526     atomics_native
1527     dos_paths
1528     dxva2_lib
1529     libc_msvcrt
1530     libdc1394_1
1531     libdc1394_2
1532     sdl
1533     threads
1534     vdpau_x11
1535     xlib
1536 "
1537
1538 # options emitted with CONFIG_ prefix but not available on the command line
1539 CONFIG_EXTRA="
1540     aandcttables
1541     ac3dsp
1542     audio_frame_queue
1543     audiodsp
1544     blockdsp
1545     bswapdsp
1546     cabac
1547     dvprofile
1548     fdctdsp
1549     gcrypt
1550     golomb
1551     gplv3
1552     h263dsp
1553     h264chroma
1554     h264dsp
1555     h264pred
1556     h264qpel
1557     hpeldsp
1558     huffman
1559     huffyuvdsp
1560     huffyuvencdsp
1561     idctdsp
1562     iirfilter
1563     intrax8
1564     lgplv3
1565     lpc
1566     me_cmp
1567     mpeg_er
1568     mpegaudio
1569     mpegaudiodsp
1570     mpegvideo
1571     mpegvideoenc
1572     nettle
1573     pixblockdsp
1574     qpeldsp
1575     rangecoder
1576     riffdec
1577     riffenc
1578     rtpdec
1579     rtpenc_chain
1580     sinewin
1581     startcode
1582     tpeldsp
1583     videodsp
1584     vp3dsp
1585 "
1586
1587 CMDLINE_SELECT="
1588     $ARCH_EXT_LIST
1589     $CONFIG_LIST
1590     $HAVE_LIST_CMDLINE
1591     $THREADS_LIST
1592     asm
1593     cross_compile
1594     debug
1595     extra_warnings
1596     logging
1597     lto
1598     optimizations
1599 "
1600
1601 PATHS_LIST="
1602     bindir
1603     datadir
1604     docdir
1605     incdir
1606     libdir
1607     mandir
1608     prefix
1609     shlibdir
1610 "
1611
1612 CMDLINE_SET="
1613     $PATHS_LIST
1614     ar
1615     arch
1616     as
1617     build_suffix
1618     cc
1619     cpu
1620     cross_prefix
1621     dep_cc
1622     extra_version
1623     host_cc
1624     host_cflags
1625     host_ld
1626     host_ldflags
1627     host_libs
1628     host_os
1629     ld
1630     logfile
1631     malloc_prefix
1632     nm
1633     optflags
1634     pkg_config
1635     pkg_config_flags
1636     random_seed
1637     samples
1638     sysinclude
1639     sysroot
1640     target_exec
1641     target_os
1642     target_path
1643     target_samples
1644     toolchain
1645 "
1646
1647 CMDLINE_APPEND="
1648     extra_cflags
1649     host_cppflags
1650 "
1651
1652 # code dependency declarations
1653
1654 # architecture extensions
1655
1656 armv5te_deps="arm"
1657 armv6_deps="arm"
1658 armv6t2_deps="arm"
1659 armv8_deps="aarch64"
1660 neon_deps_any="aarch64 arm"
1661 intrinsics_neon_deps="neon"
1662 vfp_deps_any="aarch64 arm"
1663 vfpv3_deps="vfp"
1664
1665 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1666
1667 altivec_deps="ppc"
1668 ppc4xx_deps="ppc"
1669
1670 cpunop_deps="i686"
1671 x86_64_select="i686"
1672 x86_64_suggest="fast_cmov"
1673
1674 amd3dnow_deps="mmx"
1675 amd3dnowext_deps="amd3dnow"
1676 i686_deps="x86"
1677 mmx_deps="x86"
1678 mmxext_deps="mmx"
1679 sse_deps="mmxext"
1680 sse2_deps="sse"
1681 sse3_deps="sse2"
1682 ssse3_deps="sse3"
1683 sse4_deps="ssse3"
1684 sse42_deps="sse4"
1685 avx_deps="sse42"
1686 xop_deps="avx"
1687 fma3_deps="avx"
1688 fma4_deps="avx"
1689 avx2_deps="avx"
1690
1691 mmx_external_deps="yasm"
1692 mmx_inline_deps="inline_asm"
1693 mmx_suggest="mmx_external mmx_inline"
1694
1695 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1696     eval dep=\$${ext}_deps
1697     eval ${ext}_external_deps='"${dep}_external"'
1698     eval ${ext}_inline_deps='"${dep}_inline"'
1699     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1700 done
1701
1702 aligned_stack_if_any="aarch64 ppc x86"
1703 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1704 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1705 fast_unaligned_if_any="aarch64 ppc x86"
1706 simd_align_16_if_any="altivec neon sse"
1707
1708 # system capabilities
1709 log2_deps="!libc_msvcrt"
1710
1711 symver_if_any="symver_asm_label symver_gnu_asm"
1712
1713 # threading support
1714 atomics_gcc_if="sync_val_compare_and_swap"
1715 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1716 atomics_win32_if="MemoryBarrier"
1717 atomics_native_if_any="$ATOMICS_LIST"
1718 w32threads_deps="atomics_native"
1719 threads_if_any="$THREADS_LIST"
1720
1721 # subsystems
1722 dct_select="rdft"
1723 error_resilience_select="me_cmp"
1724 intrax8_select="error_resilience"
1725 mdct_select="fft"
1726 rdft_select="fft"
1727 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1728 mpeg_er_select="error_resilience"
1729 mpegaudio_select="mpegaudiodsp"
1730 mpegaudiodsp_select="dct"
1731 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1732 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1733
1734 # decoders / encoders
1735 aac_decoder_select="mdct sinewin"
1736 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1737 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1738 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
1739 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1740 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1741 aic_decoder_select="golomb idctdsp"
1742 alac_encoder_select="lpc"
1743 als_decoder_select="bswapdsp"
1744 amrnb_decoder_select="lsp"
1745 amrwb_decoder_select="lsp"
1746 amv_decoder_select="sp5x_decoder"
1747 ape_decoder_select="bswapdsp"
1748 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1749 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1750 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1751 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1752 atrac1_decoder_select="mdct sinewin"
1753 atrac3_decoder_select="mdct"
1754 atrac3p_decoder_select="mdct sinewin"
1755 bink_decoder_select="blockdsp hpeldsp"
1756 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1757 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1758 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1759 cllc_decoder_select="bswapdsp"
1760 comfortnoise_encoder_select="lpc"
1761 cook_decoder_select="audiodsp mdct sinewin"
1762 cscd_decoder_select="lzo"
1763 cscd_decoder_suggest="zlib"
1764 dca_decoder_select="mdct"
1765 dnxhd_decoder_select="blockdsp idctdsp"
1766 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1767 dvvideo_decoder_select="dvprofile idctdsp"
1768 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1769 dxa_decoder_deps="zlib"
1770 eac3_decoder_select="ac3_decoder"
1771 eac3_encoder_select="ac3_encoder"
1772 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1773 eatgq_decoder_select="aandcttables idctdsp"
1774 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1775 exr_decoder_deps="zlib"
1776 ffv1_decoder_select="golomb rangecoder"
1777 ffv1_encoder_select="rangecoder"
1778 ffvhuff_decoder_select="huffyuv_decoder"
1779 ffvhuff_encoder_select="huffyuv_encoder"
1780 fic_decoder_select="golomb"
1781 flac_decoder_select="golomb"
1782 flac_encoder_select="bswapdsp golomb lpc"
1783 flashsv_decoder_deps="zlib"
1784 flashsv_encoder_deps="zlib"
1785 flashsv2_decoder_deps="zlib"
1786 flv_decoder_select="h263_decoder"
1787 flv_encoder_select="h263_encoder"
1788 fourxm_decoder_select="blockdsp bswapdsp"
1789 fraps_decoder_select="bswapdsp huffman"
1790 g2m_decoder_deps="zlib"
1791 g2m_decoder_select="blockdsp idctdsp"
1792 h261_decoder_select="mpeg_er mpegvideo"
1793 h261_encoder_select="aandcttables mpegvideoenc"
1794 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1795 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1796 h263i_decoder_select="h263_decoder"
1797 h263p_encoder_select="h263_encoder"
1798 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1799 h264_decoder_suggest="error_resilience"
1800 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1801 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1802 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1803 iac_decoder_select="imc_decoder"
1804 imc_decoder_select="bswapdsp fft mdct sinewin"
1805 indeo3_decoder_select="hpeldsp"
1806 interplay_video_decoder_select="hpeldsp"
1807 jpegls_decoder_select="golomb mjpeg_decoder"
1808 jpegls_encoder_select="golomb"
1809 jv_decoder_select="blockdsp"
1810 lagarith_decoder_select="huffyuvdsp"
1811 ljpeg_encoder_select="aandcttables idctdsp"
1812 loco_decoder_select="golomb"
1813 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1814 metasound_decoder_select="lsp mdct sinewin"
1815 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1816 mjpeg_decoder_select="blockdsp hpeldsp idctdsp"
1817 mjpeg_encoder_select="aandcttables mpegvideoenc"
1818 mjpegb_decoder_select="mjpeg_decoder"
1819 mlp_decoder_select="mlp_parser"
1820 motionpixels_decoder_select="bswapdsp"
1821 mp1_decoder_select="mpegaudio"
1822 mp1float_decoder_select="mpegaudio"
1823 mp2_decoder_select="mpegaudio"
1824 mp2float_decoder_select="mpegaudio"
1825 mp3_decoder_select="mpegaudio"
1826 mp3adu_decoder_select="mpegaudio"
1827 mp3adufloat_decoder_select="mpegaudio"
1828 mp3float_decoder_select="mpegaudio"
1829 mp3on4_decoder_select="mpegaudio"
1830 mp3on4float_decoder_select="mpegaudio"
1831 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1832 mpc8_decoder_select="mpegaudiodsp"
1833 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1834 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1835 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1836 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1837 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1838 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1839 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1840 mpeg4_encoder_select="h263_encoder"
1841 msmpeg4v1_decoder_select="h263_decoder"
1842 msmpeg4v2_decoder_select="h263_decoder"
1843 msmpeg4v2_encoder_select="h263_encoder"
1844 msmpeg4v3_decoder_select="h263_decoder"
1845 msmpeg4v3_encoder_select="h263_encoder"
1846 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1847 mxpeg_decoder_select="mjpeg_decoder"
1848 nellymoser_decoder_select="mdct sinewin"
1849 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1850 nuv_decoder_select="idctdsp lzo"
1851 on2avc_decoder_select="mdct"
1852 opus_decoder_deps="avresample"
1853 png_decoder_deps="zlib"
1854 png_encoder_deps="zlib"
1855 png_encoder_select="huffyuvencdsp"
1856 prores_decoder_select="idctdsp"
1857 prores_encoder_select="fdctdsp"
1858 qcelp_decoder_select="lsp"
1859 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1860 ra_144_encoder_select="audio_frame_queue lpc"
1861 ralf_decoder_select="golomb"
1862 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1863 rv10_encoder_select="h263_encoder"
1864 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1865 rv20_encoder_select="h263_encoder"
1866 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1867 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1868 shorten_decoder_select="golomb"
1869 sipr_decoder_select="lsp"
1870 sp5x_decoder_select="mjpeg_decoder"
1871 svq1_decoder_select="hpeldsp"
1872 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1873 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1874 svq3_decoder_suggest="zlib"
1875 tak_decoder_select="audiodsp"
1876 theora_decoder_select="vp3_decoder"
1877 thp_decoder_select="mjpeg_decoder"
1878 tiff_decoder_suggest="zlib"
1879 tiff_encoder_suggest="zlib"
1880 truehd_decoder_select="mlp_decoder"
1881 truemotion2_decoder_select="bswapdsp"
1882 truespeech_decoder_select="bswapdsp"
1883 tscc_decoder_deps="zlib"
1884 twinvq_decoder_select="mdct lsp sinewin"
1885 utvideo_decoder_select="bswapdsp"
1886 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1887 vble_decoder_select="huffyuvdsp"
1888 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1889 vc1image_decoder_select="vc1_decoder"
1890 vorbis_decoder_select="mdct"
1891 vorbis_encoder_select="mdct"
1892 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1893 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1894 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1895 vp6a_decoder_select="vp6_decoder"
1896 vp6f_decoder_select="vp6_decoder"
1897 vp7_decoder_select="h264pred videodsp"
1898 vp8_decoder_select="h264pred videodsp"
1899 vp9_decoder_select="videodsp"
1900 webp_decoder_select="vp8_decoder"
1901 wmapro_decoder_select="mdct sinewin"
1902 wmav1_decoder_select="mdct sinewin"
1903 wmav1_encoder_select="mdct sinewin"
1904 wmav2_decoder_select="mdct sinewin"
1905 wmav2_encoder_select="mdct sinewin"
1906 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1907 wmv1_decoder_select="h263_decoder"
1908 wmv1_encoder_select="h263_encoder"
1909 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1910 wmv2_encoder_select="h263_encoder"
1911 wmv3_decoder_select="vc1_decoder"
1912 wmv3image_decoder_select="wmv3_decoder"
1913 zerocodec_decoder_deps="zlib"
1914 zlib_decoder_deps="zlib"
1915 zlib_encoder_deps="zlib"
1916 zmbv_decoder_deps="zlib"
1917 zmbv_encoder_deps="zlib"
1918
1919 # hardware accelerators
1920 dxva2_deps="dxva2api_h"
1921 vaapi_deps="va_va_h"
1922 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1923 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1924 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1925
1926 h263_vaapi_hwaccel_deps="vaapi"
1927 h263_vaapi_hwaccel_select="h263_decoder"
1928 h263_vdpau_hwaccel_deps="vdpau"
1929 h263_vdpau_hwaccel_select="h263_decoder"
1930 h264_dxva2_hwaccel_deps="dxva2"
1931 h264_dxva2_hwaccel_select="h264_decoder"
1932 h264_vaapi_hwaccel_deps="vaapi"
1933 h264_vaapi_hwaccel_select="h264_decoder"
1934 h264_vda_hwaccel_deps="vda"
1935 h264_vda_hwaccel_select="h264_decoder"
1936 h264_vda_old_hwaccel_deps="vda"
1937 h264_vda_old_hwaccel_select="h264_decoder"
1938 h264_vdpau_hwaccel_deps="vdpau"
1939 h264_vdpau_hwaccel_select="h264_decoder"
1940 mpeg1_vdpau_hwaccel_deps="vdpau"
1941 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1942 mpeg2_dxva2_hwaccel_deps="dxva2"
1943 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1944 mpeg2_vaapi_hwaccel_deps="vaapi"
1945 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1946 mpeg2_vdpau_hwaccel_deps="vdpau"
1947 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1948 mpeg4_vaapi_hwaccel_deps="vaapi"
1949 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1950 mpeg4_vdpau_hwaccel_deps="vdpau"
1951 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1952 vc1_dxva2_hwaccel_deps="dxva2"
1953 vc1_dxva2_hwaccel_select="vc1_decoder"
1954 vc1_vaapi_hwaccel_deps="vaapi"
1955 vc1_vaapi_hwaccel_select="vc1_decoder"
1956 vc1_vdpau_hwaccel_deps="vdpau"
1957 vc1_vdpau_hwaccel_select="vc1_decoder"
1958 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1959 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1960 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1961
1962 # parsers
1963 h264_parser_select="h264_decoder"
1964 mpegvideo_parser_select="mpegvideo"
1965 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
1966 vc1_parser_select="mpegvideo startcode"
1967
1968 # external libraries
1969 libfaac_encoder_deps="libfaac"
1970 libfaac_encoder_select="audio_frame_queue"
1971 libfdk_aac_decoder_deps="libfdk_aac"
1972 libfdk_aac_encoder_deps="libfdk_aac"
1973 libfdk_aac_encoder_select="audio_frame_queue"
1974 libgsm_decoder_deps="libgsm"
1975 libgsm_encoder_deps="libgsm"
1976 libgsm_ms_decoder_deps="libgsm"
1977 libgsm_ms_encoder_deps="libgsm"
1978 libilbc_decoder_deps="libilbc"
1979 libilbc_encoder_deps="libilbc"
1980 libmp3lame_encoder_deps="libmp3lame"
1981 libmp3lame_encoder_select="audio_frame_queue"
1982 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1983 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1984 libopencore_amrnb_encoder_select="audio_frame_queue"
1985 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1986 libopenjpeg_decoder_deps="libopenjpeg"
1987 libopenjpeg_encoder_deps="libopenjpeg"
1988 libopus_decoder_deps="libopus"
1989 libopus_encoder_deps="libopus"
1990 libopus_encoder_select="audio_frame_queue"
1991 libschroedinger_decoder_deps="libschroedinger"
1992 libschroedinger_encoder_deps="libschroedinger"
1993 libspeex_decoder_deps="libspeex"
1994 libspeex_encoder_deps="libspeex"
1995 libspeex_encoder_select="audio_frame_queue"
1996 libtheora_encoder_deps="libtheora"
1997 libtwolame_encoder_deps="libtwolame"
1998 libvo_aacenc_encoder_deps="libvo_aacenc"
1999 libvo_aacenc_encoder_select="audio_frame_queue"
2000 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2001 libvorbis_encoder_deps="libvorbis"
2002 libvorbis_encoder_select="audio_frame_queue"
2003 libvpx_vp8_decoder_deps="libvpx"
2004 libvpx_vp8_encoder_deps="libvpx"
2005 libvpx_vp9_decoder_deps="libvpx"
2006 libvpx_vp9_encoder_deps="libvpx"
2007 libwavpack_encoder_deps="libwavpack"
2008 libwebp_encoder_deps="libwebp"
2009 libx264_encoder_deps="libx264"
2010 libx265_encoder_deps="libx265"
2011 libxavs_encoder_deps="libxavs"
2012 libxvid_encoder_deps="libxvid"
2013
2014 # demuxers / muxers
2015 ac3_demuxer_select="ac3_parser"
2016 asf_demuxer_select="riffdec"
2017 asf_muxer_select="riffenc"
2018 asf_stream_muxer_select="asf_muxer"
2019 avi_demuxer_select="riffdec"
2020 avi_muxer_select="riffenc"
2021 avisynth_demuxer_deps="avisynth"
2022 avisynth_demuxer_select="riffdec"
2023 caf_demuxer_select="riffdec"
2024 dirac_demuxer_select="dirac_parser"
2025 dv_demuxer_select="dvprofile"
2026 dv_muxer_select="dvprofile"
2027 dxa_demuxer_select="riffdec"
2028 eac3_demuxer_select="ac3_parser"
2029 f4v_muxer_select="mov_muxer"
2030 flac_demuxer_select="flac_parser"
2031 hds_muxer_select="flv_muxer"
2032 hls_muxer_select="mpegts_muxer"
2033 ipod_muxer_select="mov_muxer"
2034 ismv_muxer_select="mov_muxer"
2035 matroska_audio_muxer_select="matroska_muxer"
2036 matroska_demuxer_select="riffdec"
2037 matroska_demuxer_suggest="bzlib lzo zlib"
2038 matroska_muxer_select="riffenc"
2039 mmf_muxer_select="riffenc"
2040 mov_demuxer_select="riffdec"
2041 mov_demuxer_suggest="zlib"
2042 mov_muxer_select="riffenc rtpenc_chain"
2043 mp3_demuxer_select="mpegaudio_parser"
2044 mp4_muxer_select="mov_muxer"
2045 mpegts_muxer_select="adts_muxer latm_muxer"
2046 mpegtsraw_demuxer_select="mpegts_demuxer"
2047 mxf_d10_muxer_select="mxf_muxer"
2048 nut_muxer_select="riffenc"
2049 nuv_demuxer_select="riffdec"
2050 ogg_demuxer_select="golomb"
2051 psp_muxer_select="mov_muxer"
2052 rtp_demuxer_select="sdp_demuxer"
2053 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2054 rtsp_demuxer_select="http_protocol rtpdec"
2055 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2056 sap_demuxer_select="sdp_demuxer"
2057 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2058 sdp_demuxer_select="rtpdec"
2059 smoothstreaming_muxer_select="ismv_muxer"
2060 spdif_muxer_select="aac_parser"
2061 tak_demuxer_select="tak_parser"
2062 tg2_muxer_select="mov_muxer"
2063 tgp_muxer_select="mov_muxer"
2064 w64_demuxer_select="wav_demuxer"
2065 wav_demuxer_select="riffdec"
2066 wav_muxer_select="riffenc"
2067 webm_muxer_select="riffenc"
2068 wtv_demuxer_select="riffdec"
2069 xmv_demuxer_select="riffdec"
2070 xwma_demuxer_select="riffdec"
2071
2072 # indevs / outdevs
2073 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2074 alsa_outdev_deps="alsa_asoundlib_h"
2075 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2076 dv1394_indev_deps="dv1394"
2077 dv1394_indev_select="dv_demuxer"
2078 fbdev_indev_deps="linux_fb_h"
2079 jack_indev_deps="jack_jack_h pthreads"
2080 libcdio_indev_deps="libcdio"
2081 libdc1394_indev_deps="libdc1394"
2082 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2083 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2084 pulse_indev_deps="libpulse"
2085 sndio_indev_deps="sndio_h"
2086 sndio_outdev_deps="sndio_h"
2087 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2088 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2089 vfwcap_indev_extralibs="-lavicap32"
2090 x11grab_indev_deps="x11grab XShmCreateImage"
2091
2092 # protocols
2093 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2094 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2095 ffrtmpcrypt_protocol_select="tcp_protocol"
2096 ffrtmphttp_protocol_deps="!librtmp_protocol"
2097 ffrtmphttp_protocol_select="http_protocol"
2098 gopher_protocol_select="network"
2099 http_protocol_select="tcp_protocol"
2100 httpproxy_protocol_select="tcp_protocol"
2101 https_protocol_select="tls_protocol"
2102 icecast_protocol_select="http_protocol"
2103 librtmp_protocol_deps="librtmp"
2104 librtmpe_protocol_deps="librtmp"
2105 librtmps_protocol_deps="librtmp"
2106 librtmpt_protocol_deps="librtmp"
2107 librtmpte_protocol_deps="librtmp"
2108 mmsh_protocol_select="http_protocol"
2109 mmst_protocol_select="network"
2110 rtmp_protocol_deps="!librtmp_protocol"
2111 rtmp_protocol_select="tcp_protocol"
2112 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2113 rtmps_protocol_deps="!librtmp_protocol"
2114 rtmps_protocol_select="tls_protocol"
2115 rtmpt_protocol_select="ffrtmphttp_protocol"
2116 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2117 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2118 rtp_protocol_select="udp_protocol"
2119 sctp_protocol_deps="struct_sctp_event_subscribe"
2120 sctp_protocol_select="network"
2121 srtp_protocol_select="rtp_protocol"
2122 tcp_protocol_select="network"
2123 tls_protocol_deps_any="openssl gnutls"
2124 tls_protocol_select="tcp_protocol"
2125 udp_protocol_select="network"
2126 unix_protocol_deps="sys_un_h"
2127 unix_protocol_select="network"
2128
2129 # filters
2130 blackframe_filter_deps="gpl"
2131 boxblur_filter_deps="gpl"
2132 bs2b_filter_deps="libbs2b"
2133 cropdetect_filter_deps="gpl"
2134 delogo_filter_deps="gpl"
2135 drawtext_filter_deps="libfreetype"
2136 frei0r_filter_deps="frei0r dlopen"
2137 frei0r_filter_extralibs='$ldl'
2138 frei0r_src_filter_deps="frei0r dlopen"
2139 frei0r_src_filter_extralibs='$ldl'
2140 hqdn3d_filter_deps="gpl"
2141 interlace_filter_deps="gpl"
2142 ocv_filter_deps="libopencv"
2143 resample_filter_deps="avresample"
2144 scale_filter_deps="swscale"
2145
2146 # examples
2147 avcodec_example_deps="avcodec avutil"
2148 filter_audio_example_deps="avfilter avutil"
2149 metadata_example_deps="avformat avutil"
2150 output_example_deps="avcodec avformat avutil swscale"
2151 transcode_aac_example_deps="avcodec avformat avresample"
2152
2153 # libraries, in linking order
2154 avcodec_deps="avutil"
2155 avdevice_deps="avformat avcodec avutil"
2156 avfilter_deps="avutil"
2157 avformat_deps="avcodec avutil"
2158 avresample_deps="avutil"
2159 swscale_deps="avutil"
2160
2161 # programs
2162 avconv_deps="avcodec avfilter avformat avresample swscale"
2163 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2164                fps_filter null_filter resample_filter scale_filter
2165                setpts_filter trim_filter"
2166 avplay_deps="avcodec avformat avresample swscale sdl"
2167 avplay_libs='$sdl_libs'
2168 avplay_select="rdft"
2169 avprobe_deps="avcodec avformat"
2170
2171 # documentation
2172 pod2man_deps="doc"
2173 texi2html_deps="doc"
2174
2175 # default parameters
2176
2177 logfile="config.log"
2178
2179 # installation paths
2180 prefix_default="/usr/local"
2181 bindir_default='${prefix}/bin'
2182 datadir_default='${prefix}/share/avconv'
2183 docdir_default='${prefix}/share/doc/libav'
2184 incdir_default='${prefix}/include'
2185 libdir_default='${prefix}/lib'
2186 mandir_default='${prefix}/share/man'
2187 shlibdir_default="$libdir_default"
2188
2189 # toolchain
2190 ar_default="ar"
2191 cc_default="gcc"
2192 host_cc_default="gcc"
2193 cp_f="cp -f"
2194 ln_s="ln -s -f"
2195 nm_default="nm -g"
2196 objformat="elf"
2197 pkg_config_default=pkg-config
2198 ranlib="ranlib"
2199 strip="strip"
2200 yasmexe="yasm"
2201
2202 # machine
2203 arch_default=$(uname -m)
2204 cpu="generic"
2205 intrinsics="none"
2206
2207 # OS
2208 target_os_default=$(tolower $(uname -s))
2209 host_os=$target_os_default
2210
2211 # configurable options
2212 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2213
2214 enable asm
2215 enable debug
2216 enable doc
2217 enable optimizations
2218 enable safe_bitstream_reader
2219 enable static
2220 enable swscale_alpha
2221
2222 # By default, enable only those hwaccels that have no external dependencies.
2223 enable dxva2 vdpau
2224
2225 # build settings
2226 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2227 LIBPREF="lib"
2228 LIBSUF=".a"
2229 FULLNAME='$(NAME)$(BUILDSUF)'
2230 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2231 SLIBPREF="lib"
2232 SLIBSUF=".so"
2233 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2234 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2235 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2236 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2237 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2238 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2239
2240 asflags_filter=echo
2241 cflags_filter=echo
2242 ldflags_filter=echo
2243
2244 AS_C='-c'
2245 AS_O='-o $@'
2246 CC_C='-c'
2247 CC_E='-E -o $@'
2248 CC_O='-o $@'
2249 LD_O='-o $@'
2250 LD_LIB='-l%'
2251 LD_PATH='-L'
2252 HOSTCC_C='-c'
2253 HOSTCC_E='-E -o $@'
2254 HOSTCC_O='-o $@'
2255 HOSTLD_O='-o $@'
2256
2257 host_libs='-lm'
2258 host_cflags_filter=echo
2259 host_ldflags_filter=echo
2260
2261 target_path='$(CURDIR)'
2262
2263 # since the object filename is not given with the -MM flag, the compiler
2264 # is only able to print the basename, and we must add the path ourselves
2265 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2266 DEPFLAGS='-MM'
2267
2268 # find source path
2269 if test -f configure; then
2270     source_path=.
2271 else
2272     source_path=$(cd $(dirname "$0"); pwd)
2273     echo "$source_path" | grep -q '[[:blank:]]' &&
2274         die "Out of tree builds are impossible with whitespace in source path."
2275     test -e "$source_path/config.h" &&
2276         die "Out of tree builds are impossible with config.h in source dir."
2277 fi
2278
2279 for v in "$@"; do
2280     r=${v#*=}
2281     l=${v%"$r"}
2282     r=$(sh_quote "$r")
2283     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2284 done
2285
2286 find_things(){
2287     thing=$1
2288     pattern=$2
2289     file=$source_path/$3
2290     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2291 }
2292
2293 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2294 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2295 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2296 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2297 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2298 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2299 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2300 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2301 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2302 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2303 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2304
2305 ALL_COMPONENTS="
2306     $BSF_LIST
2307     $DECODER_LIST
2308     $DEMUXER_LIST
2309     $ENCODER_LIST
2310     $FILTER_LIST
2311     $HWACCEL_LIST
2312     $INDEV_LIST
2313     $MUXER_LIST
2314     $OUTDEV_LIST
2315     $PARSER_LIST
2316     $PROTOCOL_LIST
2317 "
2318
2319 for n in $COMPONENT_LIST; do
2320     v=$(toupper ${n%s})_LIST
2321     eval enable \$$v
2322     eval ${n}_if_any="\$$v"
2323 done
2324
2325 enable $ARCH_EXT_LIST
2326
2327 die_unknown(){
2328     echo "Unknown option \"$1\"."
2329     echo "See $0 --help for available options."
2330     exit 1
2331 }
2332
2333 print_3_columns() {
2334     cat | tr ' ' '\n' | sort | pr -r -3 -t
2335 }
2336
2337 show_list() {
2338     suffix=_$1
2339     shift
2340     echo $* | sed s/$suffix//g | print_3_columns
2341     exit 0
2342 }
2343
2344 rand_list(){
2345     IFS=', '
2346     set -- $*
2347     unset IFS
2348     for thing; do
2349         comp=${thing%:*}
2350         prob=${thing#$comp}
2351         prob=${prob#:}
2352         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2353         echo "prob ${prob:-0.5}"
2354         printf '%s\n' $comp
2355     done
2356 }
2357
2358 do_random(){
2359     action=$1
2360     shift
2361     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2362     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2363 }
2364
2365 for opt do
2366     optval="${opt#*=}"
2367     case "$opt" in
2368         --extra-ldflags=*)
2369             add_ldflags $optval
2370         ;;
2371         --extra-ldexeflags=*)
2372             add_ldexeflags $optval
2373         ;;
2374         --extra-libs=*)
2375             add_extralibs $optval
2376         ;;
2377         --disable-devices)
2378             disable $INDEV_LIST $OUTDEV_LIST
2379         ;;
2380         --enable-debug=*)
2381             debuglevel="$optval"
2382         ;;
2383         --disable-programs)
2384             disable $PROGRAM_LIST
2385         ;;
2386         --disable-everything)
2387             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2388         ;;
2389         --disable-all)
2390             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2391             disable $LIBRARY_LIST $PROGRAM_LIST doc
2392         ;;
2393         --enable-random|--disable-random)
2394             action=${opt%%-random}
2395             do_random ${action#--} $COMPONENT_LIST
2396         ;;
2397         --enable-random=*|--disable-random=*)
2398             action=${opt%%-random=*}
2399             do_random ${action#--} $optval
2400         ;;
2401         --enable-*=*|--disable-*=*)
2402             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2403             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2404             eval list=\$$(toupper $thing)_LIST
2405             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2406             $action $(filter "$name" $list)
2407         ;;
2408         --enable-avserver|--disable-avserver*)
2409             warn "avserver has been removed, the ${opt} option is only"\
2410                  "provided for compatibility and will be removed in the future"
2411         ;;
2412         --enable-?*|--disable-?*)
2413             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2414             if is_in $option $COMPONENT_LIST; then
2415                 test $action = disable && action=unset
2416                 eval $action \$$(toupper ${option%s})_LIST
2417             elif is_in $option $CMDLINE_SELECT; then
2418                 $action $option
2419             else
2420                 die_unknown $opt
2421             fi
2422         ;;
2423         --list-*)
2424             NAME="${opt#--list-}"
2425             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2426             NAME=${NAME%s}
2427             eval show_list $NAME \$$(toupper $NAME)_LIST
2428         ;;
2429         --help|-h) show_help
2430         ;;
2431         *)
2432             optname="${opt%%=*}"
2433             optname="${optname#--}"
2434             optname=$(echo "$optname" | sed 's/-/_/g')
2435             if is_in $optname $CMDLINE_SET; then
2436                 eval $optname='$optval'
2437             elif is_in $optname $CMDLINE_APPEND; then
2438                 append $optname "$optval"
2439             else
2440                 die_unknown $opt
2441             fi
2442         ;;
2443     esac
2444 done
2445
2446 disabled logging && logfile=/dev/null
2447
2448 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2449 set >> $logfile
2450
2451 test -n "$cross_prefix" && enable cross_compile
2452
2453 if enabled cross_compile; then
2454     test -n "$arch" && test -n "$target_os" ||
2455         die "Must specify target arch and OS when cross-compiling"
2456 fi
2457
2458 ar_default="${cross_prefix}${ar_default}"
2459 cc_default="${cross_prefix}${cc_default}"
2460 nm_default="${cross_prefix}${nm_default}"
2461 pkg_config_default="${cross_prefix}${pkg_config_default}"
2462 ranlib="${cross_prefix}${ranlib}"
2463 strip="${cross_prefix}${strip}"
2464
2465 sysinclude_default="${sysroot}/usr/include"
2466
2467 case "$toolchain" in
2468     clang-asan)
2469         cc_default="clang"
2470         add_cflags  -fsanitize=address
2471         add_ldflags -fsanitize=address
2472     ;;
2473     clang-tsan)
2474         cc_default="clang"
2475         add_cflags  -fsanitize=thread -pie
2476         add_ldflags -fsanitize=thread -pie
2477     ;;
2478     clang-usan)
2479         cc_default="clang"
2480         add_cflags  -fsanitize=undefined -O1
2481         add_ldflags -fsanitize=undefined
2482     ;;
2483     gcc-asan)
2484         cc_default="gcc"
2485         add_cflags  -fsanitize=address
2486         add_ldflags -fsanitize=address
2487     ;;
2488     gcc-tsan)
2489         cc_default="gcc"
2490         add_cflags  -fsanitize=thread -pie -fPIC
2491         add_ldflags -fsanitize=thread -pie -fPIC
2492     ;;
2493     gcc-usan)
2494         cc_default="gcc"
2495         add_cflags  -fsanitize=undefined
2496         add_ldflags -fsanitize=undefined
2497     ;;
2498     valgrind-massif)
2499         target_exec_default="valgrind"
2500         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2501     ;;
2502     valgrind-memcheck)
2503         target_exec_default="valgrind"
2504         target_exec_args="--track-origins=yes --leak-check=full"
2505     ;;
2506     msvc)
2507         # Check whether the current MSVC version needs the C99 converter.
2508         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2509         # support enough of C99 to build libav. Default to the new
2510         # behaviour if the regexp was unable to match anything, since this
2511         # successfully parses the version number of existing supported
2512         # versions that require the converter (MSVC 2010 and 2012).
2513         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2514         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2515             cc_default="cl"
2516         else
2517             cc_default="c99wrap cl"
2518         fi
2519         ld_default="link"
2520         nm_default="dumpbin -symbols"
2521         ar_default="lib"
2522         target_os_default="win32"
2523         # Use a relative path for TMPDIR. This makes sure all the
2524         # ffconf temp files are written with a relative path, avoiding
2525         # issues with msys/win32 path conversion for MSVC parameters
2526         # such as -Fo<file> or -out:<file>.
2527         TMPDIR=.
2528     ;;
2529     icl)
2530         cc_default="icl"
2531         ld_default="xilink"
2532         nm_default="dumpbin -symbols"
2533         ar_default="xilib"
2534         target_os_default="win32"
2535         TMPDIR=.
2536     ;;
2537     gcov)
2538         add_cflags  -fprofile-arcs -ftest-coverage
2539         add_ldflags -fprofile-arcs -ftest-coverage
2540     ;;
2541     hardened)
2542         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2543         add_ldflags -Wl,-z,relro -Wl,-z,now
2544     ;;
2545     ?*)
2546         die "Unknown toolchain $toolchain"
2547     ;;
2548 esac
2549
2550 set_default arch cc pkg_config sysinclude target_exec target_os
2551 enabled cross_compile || host_cc_default=$cc
2552 set_default host_cc
2553
2554 if ! $pkg_config --version >/dev/null 2>&1; then
2555     warn "$pkg_config not found, library detection may fail."
2556     pkg_config=false
2557 fi
2558
2559 exesuf() {
2560     case $1 in
2561         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2562     esac
2563 }
2564
2565 EXESUF=$(exesuf $target_os)
2566 HOSTEXESUF=$(exesuf $host_os)
2567
2568 # set temporary file name
2569 : ${TMPDIR:=$TEMPDIR}
2570 : ${TMPDIR:=$TMP}
2571 : ${TMPDIR:=/tmp}
2572
2573 if ! check_cmd mktemp -u XXXXXX; then
2574     # simple replacement for missing mktemp
2575     # NOT SAFE FOR GENERAL USE
2576     mktemp(){
2577         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2578     }
2579 fi
2580
2581 tmpfile(){
2582     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2583         (set -C; exec > $tmp) 2>/dev/null ||
2584         die "Unable to create temporary file in $TMPDIR."
2585     append TMPFILES $tmp
2586     eval $1=$tmp
2587 }
2588
2589 trap 'rm -f -- $TMPFILES' EXIT
2590
2591 tmpfile TMPASM .asm
2592 tmpfile TMPC   .c
2593 tmpfile TMPE   $EXESUF
2594 tmpfile TMPH   .h
2595 tmpfile TMPO   .o
2596 tmpfile TMPS   .S
2597 tmpfile TMPSH  .sh
2598 tmpfile TMPV   .ver
2599
2600 unset -f mktemp
2601
2602 chmod +x $TMPE
2603
2604 # make sure we can execute files in $TMPDIR
2605 cat > $TMPSH 2>> $logfile <<EOF
2606 #! /bin/sh
2607 EOF
2608 chmod +x $TMPSH >> $logfile 2>&1
2609 if ! $TMPSH >> $logfile 2>&1; then
2610     cat <<EOF
2611 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2612 variable to another directory and make sure that it is not mounted noexec.
2613 EOF
2614     die "Sanity test failed."
2615 fi
2616
2617 ccc_flags(){
2618     for flag; do
2619         case $flag in
2620             -std=c99)           echo -c99                       ;;
2621             -mcpu=*)            echo -arch ${flag#*=}           ;;
2622             -mieee)             echo -ieee                      ;;
2623             -O*|-fast)          echo $flag                      ;;
2624             -fno-math-errno)    echo -assume nomath_errno       ;;
2625             -g)                 echo -g3                        ;;
2626             -Wall)              echo -msg_enable level2         ;;
2627             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2628             -Wl,*)              echo $flag                      ;;
2629             -f*|-W*)                                            ;;
2630             *)                  echo $flag                      ;;
2631         esac
2632    done
2633 }
2634
2635 cparser_flags(){
2636     for flag; do
2637         case $flag in
2638             -Wno-switch)             echo -Wno-switch-enum ;;
2639             -Wno-format-zero-length) ;;
2640             -Wdisabled-optimization) ;;
2641             -Wno-pointer-sign)       echo -Wno-other ;;
2642             *)                       echo $flag ;;
2643         esac
2644     done
2645 }
2646
2647 msvc_common_flags(){
2648     for flag; do
2649         case $flag in
2650             # In addition to specifying certain flags under the compiler
2651             # specific filters, they must be specified here as well or else the
2652             # generic catch all at the bottom will print the original flag.
2653             -Wall)                ;;
2654             -std=c99)             ;;
2655             # Common flags
2656             -fomit-frame-pointer) ;;
2657             -g)                   echo -Z7 ;;
2658             -fno-math-errno)      ;;
2659             -fno-common)          ;;
2660             -fno-signed-zeros)    ;;
2661             -fPIC)                ;;
2662             -mthumb)              ;;
2663             -march=*)             ;;
2664             -lz)                  echo zlib.lib ;;
2665             -lavifil32)           echo vfw32.lib ;;
2666             -lavicap32)           echo vfw32.lib user32.lib ;;
2667             -l*)                  echo ${flag#-l}.lib ;;
2668             *)                    echo $flag ;;
2669         esac
2670     done
2671 }
2672
2673 msvc_flags(){
2674     msvc_common_flags "$@"
2675     for flag; do
2676         case $flag in
2677             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2678                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2679                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2680                                        -wd4273 ;;
2681         esac
2682     done
2683 }
2684
2685 icl_flags(){
2686     msvc_common_flags "$@"
2687     for flag; do
2688         case $flag in
2689             # Despite what Intel's documentation says -Wall, which is supported
2690             # on Windows, does enable remarks so disable them here.
2691             -Wall)                echo $flag -Qdiag-disable:remark ;;
2692             -std=c99)             echo -Qstd=c99 ;;
2693         esac
2694     done
2695 }
2696
2697 pgi_flags(){
2698     for flag; do
2699         case $flag in
2700             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2701             -fomit-frame-pointer) echo -Mnoframe ;;
2702             -g)                   echo -gopt ;;
2703             *)                    echo $flag ;;
2704         esac
2705     done
2706 }
2707
2708 suncc_flags(){
2709     for flag; do
2710         case $flag in
2711             -march=*|-mcpu=*)
2712                 case "${flag#*=}" in
2713                     native)                   echo -xtarget=native       ;;
2714                     v9|niagara)               echo -xarch=sparc          ;;
2715                     ultrasparc)               echo -xarch=sparcvis       ;;
2716                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2717                     i586|pentium)             echo -xchip=pentium        ;;
2718                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2719                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2720                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2721                     pentium4*)          echo -xtarget=pentium4           ;;
2722                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2723                     *-sse3)             echo -xarch=sse3                 ;;
2724                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2725                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2726                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2727                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2728                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2729                     k8|opteron|athlon64|athlon-fx)
2730                                                echo -xarch=sse2a         ;;
2731                     athlon*)                   echo -xarch=pentium_proa  ;;
2732                 esac
2733                 ;;
2734             -std=c99)             echo -xc99              ;;
2735             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2736             -fPIC)                echo -KPIC -xcode=pic32 ;;
2737             -W*,*)                echo $flag              ;;
2738             -f*-*|-W*|-mimpure-text)                      ;;
2739             -shared)              echo -G                 ;;
2740             *)                    echo $flag              ;;
2741         esac
2742     done
2743 }
2744
2745 tms470_flags(){
2746     for flag; do
2747         case $flag in
2748             -march=*|-mcpu=*)
2749                 case "${flag#*=}" in
2750                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2751                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2752                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2753                     armv6*|arm11*)          echo -mv=6   ;;
2754                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2755                                             echo -mv=5e  ;;
2756                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2757                 esac
2758                 ;;
2759             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2760             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2761             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2762             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2763             -msoft-float)   echo --float_support=vfplib       ;;
2764             -O[0-3]|-mf=*)  echo $flag                        ;;
2765             -g)             echo -g -mn                       ;;
2766             -pds=*)         echo $flag                        ;;
2767             -D*|-I*)        echo $flag                        ;;
2768             --gcc|--abi=*)  echo $flag                        ;;
2769             -me)            echo $flag                        ;;
2770         esac
2771     done
2772 }
2773
2774 probe_cc(){
2775     pfx=$1
2776     _cc=$2
2777
2778     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2779     unset _ld_o _ldflags _ld_lib _ld_path
2780     unset _depflags _DEPCMD _DEPFLAGS
2781     _flags_filter=echo
2782
2783     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2784         _type=llvm_gcc
2785         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2786         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2787         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2788         _cflags_speed='-O3'
2789         _cflags_size='-Os'
2790     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2791         _type=gcc
2792         gcc_version=$($_cc --version | head -n1)
2793         gcc_basever=$($_cc -dumpversion)
2794         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2795         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2796         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2797         if ! $_cc -dumpversion | grep -q '^2\.'; then
2798             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2799         fi
2800         _cflags_speed='-O3'
2801         _cflags_size='-Os'
2802     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2803         _type=icc
2804         _ident=$($_cc --version | head -n1)
2805         _depflags='-MMD'
2806         _cflags_speed='-O3'
2807         _cflags_size='-Os'
2808         _cflags_noopt='-O1'
2809     elif $_cc -v 2>&1 | grep -q xlc; then
2810         _type=xlc
2811         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2812         _cflags_speed='-O5'
2813         _cflags_size='-O5 -qcompact'
2814     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2815         _type=ccc
2816         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2817         _DEPFLAGS='-M'
2818         _cflags_speed='-fast'
2819         _cflags_size='-O1'
2820         _flags_filter=ccc_flags
2821     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2822         test -d "$sysroot" || die "No valid sysroot specified."
2823         _type=armcc
2824         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2825         armcc_conf="$PWD/armcc.conf"
2826         $_cc --arm_linux_configure                 \
2827              --arm_linux_config_file="$armcc_conf" \
2828              --configure_sysroot="$sysroot"        \
2829              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2830              die "Error creating armcc configuration file."
2831         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2832         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2833         as_default="${cross_prefix}gcc"
2834         _depflags='-MMD'
2835         _cflags_speed='-O3'
2836         _cflags_size='-Os'
2837     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2838         _type=tms470
2839         _ident=$($_cc -version | head -n1 | tr -s ' ')
2840         _flags='--gcc --abi=eabi -me'
2841         _cc_e='-ppl -fe=$@'
2842         _cc_o='-fe=$@'
2843         _depflags='-ppa -ppd=$(@:.o=.d)'
2844         _cflags_speed='-O3 -mf=5'
2845         _cflags_size='-O3 -mf=2'
2846         _flags_filter=tms470_flags
2847     elif $_cc -v 2>&1 | grep -q clang; then
2848         _type=clang
2849         _ident=$($_cc --version | head -n1)
2850         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2851         _cflags_speed='-O3'
2852         _cflags_size='-Os'
2853     elif $_cc -V 2>&1 | grep -q Sun; then
2854         _type=suncc
2855         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2856         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2857         _DEPFLAGS='-xM1 -xc99'
2858         _ldflags='-std=c99'
2859         _cflags_speed='-O5'
2860         _cflags_size='-O5 -xspace'
2861         _flags_filter=suncc_flags
2862     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2863         _type=pathscale
2864         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2865         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2866         _cflags_speed='-O2'
2867         _cflags_size='-Os'
2868         _flags_filter='filter_out -Wdisabled-optimization'
2869     elif $_cc -v 2>&1 | grep -q Open64; then
2870         _type=open64
2871         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2872         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2873         _cflags_speed='-O2'
2874         _cflags_size='-Os'
2875         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2876     elif $_cc -V 2>&1 | grep -q Portland; then
2877         _type=pgi
2878         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2879         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2880         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2881         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2882         _cflags_noopt="-O1"
2883         _flags_filter=pgi_flags
2884     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
2885         _type=armasm
2886         _ident=$($_cc | head -n1)
2887         # 4509: "This form of conditional instruction is deprecated"
2888         _flags="-nologo -ignore 4509"
2889     elif $_cc 2>&1 | grep -q Microsoft; then
2890         _type=msvc
2891         _ident=$($cc 2>&1 | head -n1)
2892         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2893         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2894         _cflags_speed="-O2"
2895         _cflags_size="-O1"
2896         if $_cc 2>&1 | grep -q Linker; then
2897             _ld_o='-out:$@'
2898         else
2899             _ld_o='-Fe$@'
2900         fi
2901         _cc_o='-Fo$@'
2902         _cc_e='-P -Fi$@'
2903         _flags_filter=msvc_flags
2904         _ld_lib='lib%.a'
2905         _ld_path='-libpath:'
2906         _flags='-nologo'
2907         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2908         if [ $pfx = hostcc ]; then
2909             append _cflags -Dsnprintf=_snprintf
2910         fi
2911     elif $_cc 2>&1 | grep -q Intel; then
2912         _type=icl
2913         _ident=$($cc 2>&1 | head -n1)
2914         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2915         # Not only is O3 broken on 13.x+ but it is slower on all previous
2916         # versions (tested) as well.
2917         _cflags_speed="-O2"
2918         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2919         if $_cc 2>&1 | grep -q Linker; then
2920             _ld_o='-out:$@'
2921         else
2922             _ld_o='-Fe$@'
2923         fi
2924         _cc_o='-Fo$@'
2925         _cc_e='-P'
2926         _flags_filter=icl_flags
2927         _ld_lib='lib%.a'
2928         _ld_path='-libpath:'
2929         # -Qdiag-error to make icl error when seeing certain unknown arguments
2930         _flags='-nologo -Qdiag-error:4044,10157'
2931         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2932         # with MSVC which enables it by default.
2933         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2934         if [ $pfx = hostcc ]; then
2935             append _cflags -Dsnprintf=_snprintf
2936         fi
2937     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2938         _type=cparser
2939         _ident=$($_cc --version | head -n1)
2940         _depflags='-MMD'
2941         _cflags_speed='-O4'
2942         _cflags_size='-O2'
2943         _flags_filter=cparser_flags
2944     fi
2945
2946     eval ${pfx}_type=\$_type
2947     eval ${pfx}_ident=\$_ident
2948 }
2949
2950 set_ccvars(){
2951     eval ${1}_C=\${_cc_c-\${${1}_C}}
2952     eval ${1}_E=\${_cc_e-\${${1}_E}}
2953     eval ${1}_O=\${_cc_o-\${${1}_O}}
2954
2955     if [ -n "$_depflags" ]; then
2956         eval ${1}_DEPFLAGS=\$_depflags
2957     else
2958         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2959         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2960         eval DEP${1}FLAGS=\$_flags
2961     fi
2962 }
2963
2964 probe_cc cc "$cc"
2965 cflags_filter=$_flags_filter
2966 cflags_speed=$_cflags_speed
2967 cflags_size=$_cflags_size
2968 cflags_noopt=$_cflags_noopt
2969 add_cflags $_flags $_cflags
2970 cc_ldflags=$_ldflags
2971 set_ccvars CC
2972
2973 probe_cc hostcc "$host_cc"
2974 host_cflags_filter=$_flags_filter
2975 add_host_cflags  $_flags $_cflags
2976 set_ccvars HOSTCC
2977
2978 test -n "$cc_type" && enable $cc_type ||
2979     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2980
2981 : ${as_default:=$cc}
2982 : ${dep_cc_default:=$cc}
2983 : ${ld_default:=$cc}
2984 : ${host_ld_default:=$host_cc}
2985 set_default ar as dep_cc ld host_ld
2986
2987 probe_cc as "$as"
2988 asflags_filter=$_flags_filter
2989 add_asflags $_flags $_cflags
2990 set_ccvars AS
2991
2992 probe_cc ld "$ld"
2993 ldflags_filter=$_flags_filter
2994 add_ldflags $_flags $_ldflags
2995 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2996 LD_O=${_ld_o-$LD_O}
2997 LD_LIB=${_ld_lib-$LD_LIB}
2998 LD_PATH=${_ld_path-$LD_PATH}
2999
3000 probe_cc hostld "$host_ld"
3001 host_ldflags_filter=$_flags_filter
3002 add_host_ldflags $_flags $_ldflags
3003 HOSTLD_O=${_ld_o-$HOSTLD_O}
3004
3005 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3006     probe_cc depcc "$dep_cc"
3007     CCDEP=${_DEPCMD:-$DEPCMD}
3008     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3009     DEPCCFLAGS=$_flags
3010 fi
3011
3012 if $ar 2>&1 | grep -q Microsoft; then
3013     arflags="-nologo"
3014     ar_o='-out:$@'
3015 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3016     arflags="rq"
3017     ar_o='$@'
3018 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3019     arflags='-Xany -r -c'
3020     ar_o='$@'
3021 else
3022     arflags="rc"
3023     ar_o='$@'
3024 fi
3025
3026 add_cflags $extra_cflags
3027 add_asflags $extra_cflags
3028
3029 if test -n "$sysroot"; then
3030     case "$cc_type" in
3031         gcc|llvm_gcc|clang)
3032             add_cppflags --sysroot="$sysroot"
3033             add_ldflags --sysroot="$sysroot"
3034         ;;
3035         tms470)
3036             add_cppflags -I"$sysinclude"
3037             add_ldflags  --sysroot="$sysroot"
3038         ;;
3039     esac
3040 fi
3041
3042 if test "$cpu" = host; then
3043     enabled cross_compile &&
3044         die "--cpu=host makes no sense when cross-compiling."
3045
3046     case "$cc_type" in
3047         gcc|llvm_gcc)
3048             check_native(){
3049                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3050                 sed -n "/cc1.*$1=/{
3051                             s/.*$1=\\([^ ]*\\).*/\\1/
3052                             p
3053                             q
3054                         }" $TMPE
3055             }
3056             cpu=$(check_native -march || check_native -mcpu)
3057         ;;
3058     esac
3059
3060     test "${cpu:-host}" = host &&
3061         die "--cpu=host not supported with compiler $cc"
3062 fi
3063
3064 # Deal with common $arch aliases
3065 case "$arch" in
3066     aarch64|arm64)
3067         arch="aarch64"
3068     ;;
3069     arm*)
3070         arch="arm"
3071     ;;
3072     mips*|IP*)
3073         arch="mips"
3074     ;;
3075     parisc*|hppa*)
3076         arch="parisc"
3077     ;;
3078     "Power Macintosh"|ppc*|powerpc*)
3079         arch="ppc"
3080     ;;
3081     s390|s390x)
3082         arch="s390"
3083     ;;
3084     sh4|sh)
3085         arch="sh4"
3086     ;;
3087     sun4u|sparc*)
3088         arch="sparc"
3089     ;;
3090     tilegx|tile-gx)
3091         arch="tilegx"
3092     ;;
3093     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3094         arch="x86"
3095     ;;
3096 esac
3097
3098 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3099 enable $arch
3100
3101 # Add processor-specific flags
3102 if enabled aarch64; then
3103
3104     case $cpu in
3105         armv*)
3106             cpuflags="-march=$cpu"
3107         ;;
3108         *)
3109             cpuflags="-mcpu=$cpu"
3110         ;;
3111     esac
3112
3113 elif enabled alpha; then
3114
3115     cpuflags="-mcpu=$cpu"
3116
3117 elif enabled arm; then
3118
3119     check_arm_arch() {
3120         check_cpp_condition stddef.h \
3121             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3122             $cpuflags
3123     }
3124
3125     probe_arm_arch() {
3126         if   check_arm_arch 4;        then echo armv4;
3127         elif check_arm_arch 4T;       then echo armv4t;
3128         elif check_arm_arch 5;        then echo armv5;
3129         elif check_arm_arch 5E;       then echo armv5e;
3130         elif check_arm_arch 5T;       then echo armv5t;
3131         elif check_arm_arch 5TE;      then echo armv5te;
3132         elif check_arm_arch 5TEJ;     then echo armv5te;
3133         elif check_arm_arch 6;        then echo armv6;
3134         elif check_arm_arch 6J;       then echo armv6j;
3135         elif check_arm_arch 6K;       then echo armv6k;
3136         elif check_arm_arch 6Z;       then echo armv6z;
3137         elif check_arm_arch 6ZK;      then echo armv6zk;
3138         elif check_arm_arch 6T2;      then echo armv6t2;
3139         elif check_arm_arch 7;        then echo armv7;
3140         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3141         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3142         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3143         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3144         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3145         fi
3146     }
3147
3148     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3149
3150     case $cpu in
3151         armv*)
3152             cpuflags="-march=$cpu"
3153             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3154         ;;
3155         *)
3156             cpuflags="-mcpu=$cpu"
3157             case $cpu in
3158                 cortex-a*)                               subarch=armv7a  ;;
3159                 cortex-r*)                               subarch=armv7r  ;;
3160                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3161                 arm11*)                                  subarch=armv6   ;;
3162                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3163                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3164                 *)                             subarch=$(probe_arm_arch) ;;
3165             esac
3166         ;;
3167     esac
3168
3169     case "$subarch" in
3170         armv5t*)    enable fast_clz                ;;
3171         armv[6-8]*) enable fast_clz fast_unaligned ;;
3172     esac
3173
3174 elif enabled avr32; then
3175
3176     case $cpu in
3177         ap7[02]0[0-2])
3178             subarch="avr32_ap"
3179             cpuflags="-mpart=$cpu"
3180         ;;
3181         ap)
3182             subarch="avr32_ap"
3183             cpuflags="-march=$cpu"
3184         ;;
3185         uc3[ab]*)
3186             subarch="avr32_uc"
3187             cpuflags="-mcpu=$cpu"
3188         ;;
3189         uc)
3190             subarch="avr32_uc"
3191             cpuflags="-march=$cpu"
3192         ;;
3193     esac
3194
3195 elif enabled bfin; then
3196
3197     cpuflags="-mcpu=$cpu"
3198
3199 elif enabled mips; then
3200
3201     cpuflags="-march=$cpu"
3202
3203 elif enabled ppc; then
3204
3205     disable ldbrx
3206
3207     case $(tolower $cpu) in
3208         601|ppc601|powerpc601)
3209             cpuflags="-mcpu=601"
3210             disable altivec
3211         ;;
3212         603*|ppc603*|powerpc603*)
3213             cpuflags="-mcpu=603"
3214             disable altivec
3215         ;;
3216         604*|ppc604*|powerpc604*)
3217             cpuflags="-mcpu=604"
3218             disable altivec
3219         ;;
3220         g3|75*|ppc75*|powerpc75*)
3221             cpuflags="-mcpu=750"
3222             disable altivec
3223         ;;
3224         g4|745*|ppc745*|powerpc745*)
3225             cpuflags="-mcpu=7450"
3226         ;;
3227         74*|ppc74*|powerpc74*)
3228             cpuflags="-mcpu=7400"
3229         ;;
3230         g5|970|ppc970|powerpc970)
3231             cpuflags="-mcpu=970"
3232         ;;
3233         power[3-7]*)
3234             cpuflags="-mcpu=$cpu"
3235         ;;
3236         cell)
3237             cpuflags="-mcpu=cell"
3238             enable ldbrx
3239         ;;
3240         e500mc)
3241             cpuflags="-mcpu=e500mc"
3242             disable altivec
3243         ;;
3244         e500v2)
3245             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3246             disable altivec
3247             disable dcbzl
3248         ;;
3249         e500)
3250             cpuflags="-mcpu=8540 -mhard-float"
3251             disable altivec
3252             disable dcbzl
3253         ;;
3254     esac
3255
3256 elif enabled sparc; then
3257
3258     case $cpu in
3259         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3260             cpuflags="-mcpu=$cpu"
3261         ;;
3262         ultrasparc*|niagara[234])
3263             cpuflags="-mcpu=$cpu"
3264         ;;
3265     esac
3266
3267 elif enabled x86; then
3268
3269     case $cpu in
3270         i[345]86|pentium)
3271             cpuflags="-march=$cpu"
3272             disable mmx
3273         ;;
3274         # targets that do NOT support nopl and conditional mov (cmov)
3275         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3276             cpuflags="-march=$cpu"
3277             disable i686
3278         ;;
3279         # targets that do support nopl and conditional mov (cmov)
3280         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3281             cpuflags="-march=$cpu"
3282             enable i686
3283             enable fast_cmov
3284         ;;
3285         # targets that do support conditional mov but on which it's slow
3286         pentium4|pentium4m|prescott|nocona)
3287             cpuflags="-march=$cpu"
3288             enable i686
3289             disable fast_cmov
3290         ;;
3291     esac
3292
3293 fi
3294
3295 if [ "$cpu" != generic ]; then
3296     add_cflags  $cpuflags
3297     add_asflags $cpuflags
3298 fi
3299
3300 # compiler sanity check
3301 check_exec <<EOF
3302 int main(void){ return 0; }
3303 EOF
3304 if test "$?" != 0; then
3305     echo "$cc is unable to create an executable file."
3306     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3307         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3308         echo "Only do this if you know what cross compiling means."
3309     fi
3310     die "C compiler test failed."
3311 fi
3312
3313 add_cppflags -D_ISOC99_SOURCE
3314 check_cflags -std=c99
3315 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3316 #include <stdlib.h>
3317 EOF
3318 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3319 #include <stdlib.h>
3320 EOF
3321
3322 add_host_cppflags -D_ISOC99_SOURCE
3323 check_host_cflags -std=c99
3324 check_host_cflags -Wall
3325 check_host_cflags -O3
3326
3327 check_64bit(){
3328     arch32=$1
3329     arch64=$2
3330     expr=$3
3331     check_code cc "" "int test[2*($expr) - 1]" &&
3332         subarch=$arch64 || subarch=$arch32
3333 }
3334
3335 case "$arch" in
3336     aarch64|alpha|ia64)
3337         spic=$shared
3338     ;;
3339     mips)
3340         check_64bit mips mips64 '_MIPS_SIM > 1'
3341         spic=$shared
3342     ;;
3343     parisc)
3344         check_64bit parisc parisc64 'sizeof(void *) > 4'
3345         spic=$shared
3346     ;;
3347     ppc)
3348         check_64bit ppc ppc64 'sizeof(void *) > 4'
3349         spic=$shared
3350     ;;
3351     s390)
3352         check_64bit s390 s390x 'sizeof(void *) > 4'
3353         spic=$shared
3354     ;;
3355     sparc)
3356         check_64bit sparc sparc64 'sizeof(void *) > 4'
3357         spic=$shared
3358     ;;
3359     x86)
3360         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3361         if test "$subarch" = "x86_64"; then
3362             spic=$shared
3363         fi
3364     ;;
3365 esac
3366
3367 enable $subarch
3368 enabled spic && enable_weak pic
3369
3370 # OS specific
3371 case $target_os in
3372     aix)
3373         SHFLAGS=-shared
3374         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3375         enabled shared && add_ldflags -Wl,-brtl
3376         ;;
3377     android)
3378         disable symver
3379         SLIB_INSTALL_NAME='$(SLIBNAME)'
3380         SLIB_INSTALL_LINKS=
3381         # soname not set on purpose
3382         SHFLAGS=-shared
3383         ;;
3384     haiku)
3385         prefix_default="/boot/common"
3386         network_extralibs="-lnetwork"
3387         host_libs=
3388         ;;
3389     sunos)
3390         SHFLAGS='-shared -Wl,-h,$$(@F)'
3391         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3392         network_extralibs="-lsocket -lnsl"
3393         # When using suncc to build, the Solaris linker will mark
3394         # an executable with each instruction set encountered by
3395         # the Solaris assembler.  As our libraries contain their own
3396         # guards for processor-specific code, instead suppress
3397         # generation of the HWCAPS ELF section on Solaris x86 only.
3398         enabled_all suncc x86 &&
3399             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3400             add_ldflags -Wl,-M,mapfile
3401         nm_default='nm -P -g'
3402         ;;
3403     netbsd)
3404         disable symver
3405         oss_indev_extralibs="-lossaudio"
3406         oss_outdev_extralibs="-lossaudio"
3407         ;;
3408     openbsd|bitrig)
3409         disable symver
3410         SHFLAGS='-shared'
3411         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3412         SLIB_INSTALL_LINKS=
3413         oss_indev_extralibs="-lossaudio"
3414         oss_outdev_extralibs="-lossaudio"
3415         ;;
3416     dragonfly)
3417         disable symver
3418         ;;
3419     freebsd)
3420         ;;
3421     bsd/os)
3422         add_extralibs -lpoll -lgnugetopt
3423         ;;
3424     darwin)
3425         enabled ppc && add_asflags -force_cpusubtype_ALL
3426         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3427         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3428         add_ldflags -Wl,-dynamic,-search_paths_first
3429         SLIBSUF=".dylib"
3430         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3431         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3432         objformat="macho"
3433         enabled x86_64 && objformat="macho64"
3434         enabled_any pic shared ||
3435             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3436         ;;
3437     mingw32*)
3438         if test $target_os = "mingw32ce"; then
3439             disable network
3440         else
3441             target_os=mingw32
3442         fi
3443         LIBTARGET=i386
3444         if enabled x86_64; then
3445             LIBTARGET="i386:x86-64"
3446         elif enabled arm; then
3447             LIBTARGET=arm-wince
3448         fi
3449         check_ldflags -Wl,--nxcompat
3450         check_ldflags -Wl,--dynamicbase
3451         shlibdir_default="$bindir_default"
3452         SLIBPREF=""
3453         SLIBSUF=".dll"
3454         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3455         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3456         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3457         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3458         SLIB_INSTALL_LINKS=
3459         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3460         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3461         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3462         objformat="win32"
3463         dlltool="${cross_prefix}dlltool"
3464         ranlib=:
3465         enable dos_paths
3466         ;;
3467     win32|win64)
3468         disable symver
3469         if enabled shared; then
3470             # Link to the import library instead of the normal static library
3471             # for shared libs.
3472             LD_LIB='%.lib'
3473             # Cannot build both shared and static libs with MSVC or icl.
3474             disable static
3475         fi
3476         shlibdir_default="$bindir_default"
3477         SLIBPREF=""
3478         SLIBSUF=".dll"
3479         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3480         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3481         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3482         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3483         SLIB_INSTALL_LINKS=
3484         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3485         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3486         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3487         objformat="win32"
3488         ranlib=:
3489         enable dos_paths
3490         ;;
3491     cygwin*)
3492         target_os=cygwin
3493         shlibdir_default="$bindir_default"
3494         SLIBPREF="cyg"
3495         SLIBSUF=".dll"
3496         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3497         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3498         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3499         SLIB_INSTALL_LINKS=
3500         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3501         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3502         objformat="win32"
3503         enable dos_paths
3504         ;;
3505     *-dos|freedos|opendos)
3506         network_extralibs="-lsocket"
3507         objformat="coff"
3508         enable dos_paths
3509         add_cppflags -U__STRICT_ANSI__
3510         ;;
3511     linux)
3512         enable dv1394
3513         ;;
3514     irix*)
3515         target_os=irix
3516         ranlib="echo ignoring ranlib"
3517         ;;
3518     os/2*)
3519         ln_s="cp -f"
3520         objformat="aout"
3521         add_cppflags -D_GNU_SOURCE
3522         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3523         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3524         LIBSUF="_s.a"
3525         SLIBPREF=""
3526         SLIBSUF=".dll"
3527         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3528         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3529         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3530             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3531             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3532             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3533             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3534             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3535         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3536             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3537         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3538         enable dos_paths
3539         ;;
3540     gnu/kfreebsd)
3541         add_cppflags -D_BSD_SOURCE
3542         ;;
3543     gnu)
3544         ;;
3545     qnx)
3546         add_cppflags -D_QNX_SOURCE
3547         network_extralibs="-lsocket"
3548         ;;
3549     symbian)
3550         SLIBSUF=".dll"
3551         enable dos_paths
3552         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3553         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3554         add_ldflags -Wl,--target1-abs,--no-undefined \
3555                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3556                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3557         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3558                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3559                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3560         ;;
3561     osf1)
3562         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3563         ;;
3564     minix)
3565         ;;
3566     plan9)
3567         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3568                      -D_REENTRANT_SOURCE        \
3569                      -D_RESEARCH_SOURCE         \
3570                      -DFD_SETSIZE=96            \
3571                      -DHAVE_SOCK_OPTS
3572         add_compat strtod.o strtod=avpriv_strtod
3573         network_extralibs='-lbsd'
3574         exeobjs=compat/plan9/main.o
3575         cp_f='cp'
3576         ;;
3577     none)
3578         ;;
3579     *)
3580         die "Unknown OS '$target_os'."
3581         ;;
3582 esac
3583
3584 # determine libc flavour
3585
3586 probe_libc(){
3587     pfx=$1
3588     pfx_no_=${pfx%_}
3589     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3590     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3591         eval ${pfx}libc_type=uclibc
3592         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3593     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3594         eval ${pfx}libc_type=glibc
3595         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3596     # MinGW headers can be installed on Cygwin, so check for newlib first.
3597     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3598         eval ${pfx}libc_type=newlib
3599         add_${pfx}cppflags -U__STRICT_ANSI__
3600     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3601     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3602         eval ${pfx}libc_type=mingw64
3603         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3604         eval test \$${pfx_no_}cc_type = "gcc" &&
3605             add_${pfx}cppflags -D__printf__=__gnu_printf__
3606     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3607          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3608         eval ${pfx}libc_type=mingw32
3609         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3610             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3611             die "ERROR: MinGW32 runtime version must be >= 3.15."
3612         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3613         eval test \$${pfx_no_}cc_type = "gcc" &&
3614             add_${pfx}cppflags -D__printf__=__gnu_printf__
3615     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3616         eval ${pfx}libc_type=msvcrt
3617         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3618         # 0x601 by default unless something else is set by the user.
3619         # This can easily lead to us detecting functions only present
3620         # in such new versions and producing binaries requiring windows 7.0.
3621         # Therefore explicitly set the default to XP unless the user has
3622         # set something else on the command line.
3623         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3624             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3625     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3626         eval ${pfx}libc_type=klibc
3627     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3628         eval ${pfx}libc_type=bionic
3629     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3630         eval ${pfx}libc_type=solaris
3631         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3632     fi
3633 }
3634
3635 probe_libc
3636 test -n "$libc_type" && enable libc_$libc_type
3637 probe_libc host_
3638 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3639
3640 case $libc_type in
3641     bionic)
3642         add_compat strtod.o strtod=avpriv_strtod
3643         ;;
3644     msvcrt)
3645         add_compat strtod.o strtod=avpriv_strtod
3646         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3647                                      _snprintf=avpriv_snprintf  \
3648                                      vsnprintf=avpriv_vsnprintf
3649         ;;
3650 esac
3651
3652 # hacks for compiler/libc/os combinations
3653
3654 if enabled_all tms470 libc_glibc; then
3655     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3656     add_cppflags -D__USER_LABEL_PREFIX__=
3657     add_cppflags -D__builtin_memset=memset
3658     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3659     add_cflags   -pds=48    # incompatible redefinition of macro
3660 fi
3661
3662 if enabled_all ccc libc_glibc; then
3663     add_ldflags -Wl,-z,now  # calls to libots crash without this
3664 fi
3665
3666 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3667     add_cppflags '-I\$(SRC_PATH)/compat/float'
3668
3669 esc(){
3670     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3671 }
3672
3673 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3674
3675 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3676
3677 set_default $PATHS_LIST
3678 set_default nm
3679
3680 # we need to build at least one lib type
3681 if ! enabled_any static shared; then
3682     cat <<EOF
3683 At least one library type must be built.
3684 Specify --enable-static to build the static libraries or --enable-shared to
3685 build the shared libraries as well. To only build the shared libraries specify
3686 --disable-static in addition to --enable-shared.
3687 EOF
3688     exit 1;
3689 fi
3690
3691 die_license_disabled() {
3692     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3693 }
3694
3695 die_license_disabled gpl libcdio
3696 die_license_disabled gpl libx264
3697 die_license_disabled gpl libx265
3698 die_license_disabled gpl libxavs
3699 die_license_disabled gpl libxvid
3700 die_license_disabled gpl x11grab
3701
3702 die_license_disabled nonfree libfaac
3703 die_license_disabled nonfree libfdk_aac
3704 die_license_disabled nonfree openssl
3705
3706 die_license_disabled version3 libopencore_amrnb
3707 die_license_disabled version3 libopencore_amrwb
3708 die_license_disabled version3 libvo_aacenc
3709 die_license_disabled version3 libvo_amrwbenc
3710
3711 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3712
3713 disabled optimizations || check_cflags -fomit-frame-pointer
3714
3715 enable_weak_pic() {
3716     disabled pic && return
3717     enable pic
3718     add_cppflags -DPIC
3719     case "$target_os" in
3720     mingw*|cygwin*)
3721         ;;
3722     *)
3723         add_cflags -fPIC
3724         ;;
3725     esac
3726     add_asflags  -fPIC
3727 }
3728
3729 enabled pic && enable_weak_pic
3730
3731 check_cc <<EOF || die "Symbol mangling check failed."
3732 int ff_extern;
3733 EOF
3734 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3735 extern_prefix=${sym%%ff_extern*}
3736
3737 check_cc <<EOF && enable_weak inline_asm
3738 void foo(void) { __asm__ volatile ("" ::); }
3739 EOF
3740
3741 _restrict=
3742 for restrict_keyword in restrict __restrict__ __restrict; do
3743     check_cc <<EOF && _restrict=$restrict_keyword && break
3744 void foo(char * $restrict_keyword p);
3745 EOF
3746 done
3747
3748 check_cc <<EOF && enable pragma_deprecated
3749 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3750 EOF
3751
3752 check_cc <<EOF && enable attribute_packed
3753 struct { int x; } __attribute__((packed)) x;
3754 EOF
3755
3756 check_cc <<EOF && enable attribute_may_alias
3757 union { int x; } __attribute__((may_alias)) x;
3758 EOF
3759
3760 check_cc <<EOF || die "endian test failed"
3761 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3762 EOF
3763 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3764
3765 check_gas() {
3766     log "check_gas using '$as' as AS"
3767     # :vararg is used on aarch64, arm and ppc altivec
3768     check_as <<EOF || return 1
3769 .macro m n, y:vararg=0
3770 \n: .int \y
3771 .endm
3772 m x
3773 EOF
3774     # .altmacro is only used in arm asm
3775     ! enabled arm || check_as <<EOF || return 1
3776 .altmacro
3777 EOF
3778     enable gnu_as
3779     return 0
3780 }
3781
3782 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3783     nogas=:
3784     enabled_any arm aarch64 && nogas=die
3785     enabled_all ppc altivec && nogas=warn
3786     as_noop=-v
3787
3788     case $as_type in
3789         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3790         gcc)  gaspp_as_type=gas ;;
3791         *)    gaspp_as_type=$as_type ;;
3792     esac
3793
3794     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3795
3796     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3797         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3798
3799     if ! check_gas ; then
3800         as=${gas:=$as}
3801         check_gas || \
3802             $nogas "GNU assembler not found, install/update gas-preprocessor"
3803     fi
3804
3805     check_as <<EOF && enable as_func
3806 .func test
3807 .endfunc
3808 EOF
3809 fi
3810
3811 check_inline_asm inline_asm_labels '"1:\n"'
3812
3813 if enabled aarch64; then
3814     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3815     # internal assembler in clang 3.3 does not support this instruction
3816     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3817     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3818
3819     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3820
3821 elif enabled alpha; then
3822
3823     check_cflags -mieee
3824
3825 elif enabled arm; then
3826
3827     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3828     enabled thumb && check_cflags -mthumb || check_cflags -marm
3829
3830     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3831         enable vfp_args
3832     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3833         case "${cross_prefix:-$cc}" in
3834             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3835             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3836 __asm__ (".eabi_attribute 28, 1");
3837 int main(void) { return 0; }
3838 EOF
3839         esac
3840         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3841     fi
3842
3843     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3844     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3845     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3846     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3847     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3848     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3849
3850     [ $target_os = linux ] || [ $target_os = android ] ||
3851         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3852             $ARCH_EXT_LIST_ARM
3853
3854     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3855
3856     check_as <<EOF && enable as_dn_directive
3857 ra .dn d0.i16
3858 .unreq ra
3859 EOF
3860
3861     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3862
3863 elif enabled mips; then
3864
3865     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3866
3867 elif enabled parisc; then
3868
3869     if enabled gcc; then
3870         case $($cc -dumpversion) in
3871             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3872         esac
3873     fi
3874
3875 elif enabled ppc; then
3876
3877     enable local_aligned_8 local_aligned_16
3878
3879     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3880     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3881     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3882     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3883
3884     # AltiVec flags: The FSF version of GCC differs from the Apple version
3885     if enabled altivec; then
3886         check_cflags -maltivec -mabi=altivec &&
3887         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3888         check_cflags -faltivec
3889
3890         # check if our compiler supports Motorola AltiVec C API
3891         check_cc <<EOF || disable altivec
3892 $inc_altivec_h
3893 int main(void) {
3894     vector signed int v1 = (vector signed int) { 0 };
3895     vector signed int v2 = (vector signed int) { 1 };
3896     v1 = vec_add(v1, v2);
3897     return 0;
3898 }
3899 EOF
3900
3901         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3902     fi
3903
3904 elif enabled x86; then
3905
3906     check_builtin rdtsc    intrin.h   "__rdtsc()"
3907     check_builtin mm_empty mmintrin.h "_mm_empty()"
3908
3909     enable local_aligned_8 local_aligned_16
3910
3911     # check whether EBP is available on x86
3912     # As 'i' is stored on the stack, this program will crash
3913     # if the base pointer is used to access it because the
3914     # base pointer is cleared in the inline assembly code.
3915     check_exec_crash <<EOF && enable ebp_available
3916 volatile int i=0;
3917 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3918 return i;
3919 EOF
3920
3921     # check whether EBX is available on x86
3922     check_inline_asm ebx_available '""::"b"(0)' &&
3923         check_inline_asm ebx_available '"":::"%ebx"'
3924
3925     # check whether xmm clobbers are supported
3926     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3927
3928     # check whether binutils is new enough to compile SSSE3/MMXEXT
3929     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3930     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3931
3932     if ! disabled_any asm mmx yasm; then
3933         if check_cmd $yasmexe --version; then
3934             enabled x86_64 && yasm_extra="-m amd64"
3935             yasm_debug="-g dwarf2"
3936         elif check_cmd nasm -v; then
3937             yasmexe=nasm
3938             yasm_debug="-g -F dwarf"
3939             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3940         fi
3941
3942         YASMFLAGS="-f $objformat $yasm_extra"
3943         enabled pic               && append YASMFLAGS "-DPIC"
3944         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3945         case "$objformat" in
3946             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3947         esac
3948
3949         check_yasm "movbe ecx, [5]" && enable yasm ||
3950             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3951         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3952         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3953         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3954         check_yasm "CPU amdnop" || disable cpunop
3955     fi
3956
3957     case "$cpu" in
3958         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3959             disable fast_clz
3960         ;;
3961     esac
3962
3963 fi
3964
3965 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
3966
3967 check_ldflags -Wl,--as-needed
3968
3969 if check_func dlopen; then
3970     ldl=
3971 elif check_func dlopen -ldl; then
3972     ldl=-ldl
3973 fi
3974
3975 if ! disabled network; then
3976     check_func getaddrinfo $network_extralibs
3977     check_func getservbyport $network_extralibs
3978     check_func inet_aton $network_extralibs
3979
3980     check_type netdb.h "struct addrinfo"
3981     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3982     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3983     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3984     check_type poll.h "struct pollfd"
3985     check_type netinet/sctp.h "struct sctp_event_subscribe"
3986     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3987     check_type netinet/in.h "struct sockaddr_in6"
3988     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3989     check_type "sys/types.h sys/socket.h" socklen_t
3990
3991     # Prefer arpa/inet.h over winsock2
3992     if check_header arpa/inet.h ; then
3993         check_func closesocket
3994     elif check_header winsock2.h ; then
3995         check_func_headers winsock2.h closesocket -lws2 &&
3996             network_extralibs="-lws2" ||
3997         { check_func_headers winsock2.h closesocket -lws2_32 &&
3998             network_extralibs="-lws2_32"; } || disable winsock2_h network
3999         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4000
4001         check_type ws2tcpip.h socklen_t
4002         check_type ws2tcpip.h "struct addrinfo"
4003         check_type ws2tcpip.h "struct group_source_req"
4004         check_type ws2tcpip.h "struct ip_mreq_source"
4005         check_type ws2tcpip.h "struct ipv6_mreq"
4006         check_type winsock2.h "struct pollfd"
4007         check_struct winsock2.h "struct sockaddr" sa_len
4008         check_type ws2tcpip.h "struct sockaddr_in6"
4009         check_type ws2tcpip.h "struct sockaddr_storage"
4010     else
4011         disable network
4012     fi
4013 fi
4014
4015 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4016 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4017 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4018 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4019
4020 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4021 check_func  ${malloc_prefix}memalign            && enable memalign
4022 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4023
4024 check_func  fcntl
4025 check_func  fork
4026 check_func  gethrtime
4027 check_func  getopt
4028 check_func  getrusage
4029 check_func  gettimeofday
4030 check_func  isatty
4031 check_func  localtime_r
4032 check_func  mach_absolute_time
4033 check_func  mkstemp
4034 check_func  mmap
4035 check_func  mprotect
4036 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4037 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4038 check_func  sched_getaffinity
4039 check_func  setrlimit
4040 check_func  strerror_r
4041 check_func  strptime
4042 check_func  sysconf
4043 check_func  sysctl
4044 check_func  usleep
4045
4046 check_func_headers io.h setmode
4047 check_func_headers stdlib.h getenv
4048
4049 check_func_headers windows.h CoTaskMemFree -lole32
4050 check_func_headers windows.h GetProcessAffinityMask
4051 check_func_headers windows.h GetProcessTimes
4052 check_func_headers windows.h GetSystemTimeAsFileTime
4053 check_func_headers windows.h MapViewOfFile
4054 check_func_headers windows.h SetConsoleTextAttribute
4055 check_func_headers windows.h Sleep
4056 check_func_headers windows.h VirtualAlloc
4057
4058 check_header direct.h
4059 check_header dlfcn.h
4060 check_header dxva.h
4061 check_header dxva2api.h
4062 check_header io.h
4063 check_header mach/mach_time.h
4064 check_header malloc.h
4065 check_header poll.h
4066 check_header sys/mman.h
4067 check_header sys/param.h
4068 check_header sys/resource.h
4069 check_header sys/select.h
4070 check_header sys/time.h
4071 check_header sys/un.h
4072 check_header unistd.h
4073 check_header vdpau/vdpau.h
4074 check_header vdpau/vdpau_x11.h
4075 check_header VideoDecodeAcceleration/VDADecoder.h
4076 check_header windows.h
4077 check_header X11/extensions/XvMClib.h
4078
4079 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4080 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4081 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4082
4083 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4084
4085 if ! disabled w32threads && ! enabled pthreads; then
4086     check_func_headers "windows.h process.h" _beginthreadex &&
4087         enable w32threads || disable w32threads
4088 fi
4089
4090 # check for some common methods of building with pthread support
4091 # do this before the optional library checks as some of them require pthreads
4092 if ! disabled pthreads && ! enabled w32threads; then
4093     enable pthreads
4094     if check_func pthread_join -pthread; then
4095         add_cflags -pthread
4096         add_extralibs -pthread
4097     elif check_func pthread_join -pthreads; then
4098         add_cflags -pthreads
4099         add_extralibs -pthreads
4100     elif check_func pthread_join -lpthreadGC2; then
4101         add_extralibs -lpthreadGC2
4102     elif check_lib pthread.h pthread_join -lpthread; then
4103         :
4104     elif ! check_func pthread_join; then
4105         disable pthreads
4106     fi
4107 fi
4108
4109 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4110 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4111
4112 check_lib math.h sin -lm && LIBM="-lm"
4113 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4114
4115 atan2f_args=2
4116 ldexpf_args=2
4117 powf_args=2
4118
4119 for func in $MATH_FUNCS; do
4120     eval check_mathfunc $func \${${func}_args:-1}
4121 done
4122
4123 # these are off by default, so fail if requested and not available
4124 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4125                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4126                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4127 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4128 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4129 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4130 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4131 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4132 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4133 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4134 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4135                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4136                                done || die "ERROR: libgsm not found"; }
4137 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4138 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4139 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4140 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4141 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4142 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4143                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4144 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4145 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4146 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4147 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4148 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4149 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4150 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4151 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4152 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4153 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4154 enabled libvpx            && {
4155     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4156                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4157     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4158                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4159     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4160     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4161 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4162 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4163 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4164                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4165                                die "ERROR: libx264 version must be >= 0.118."; }
4166 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4167                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4168                                die "ERROR: libx265 version must be >= 17."; }
4169 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4170 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4171 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4172                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4173                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4174                                die "ERROR: openssl not found"; }
4175
4176 if enabled gnutls; then
4177     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4178     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4179 fi
4180
4181 # libdc1394 check
4182 if enabled libdc1394; then
4183     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4184         enable libdc1394_2; } ||
4185     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4186         enable libdc1394_1; } ||
4187     die "ERROR: No version of libdc1394 found "
4188 fi
4189
4190 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4191     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4192     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4193     enable sdl
4194 fi
4195
4196 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4197 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4198
4199 check_header linux/fb.h
4200 check_header linux/videodev2.h
4201 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4202
4203 check_header sys/videoio.h
4204
4205 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4206 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4207 # w32api 3.12 had it defined wrong
4208 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4209
4210 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4211 { check_header dev/bktr/ioctl_meteor.h &&
4212   check_header dev/bktr/ioctl_bt848.h; } ||
4213 { check_header machine/ioctl_meteor.h &&
4214   check_header machine/ioctl_bt848.h; } ||
4215 { check_header dev/video/meteor/ioctl_meteor.h &&
4216   check_header dev/video/bktr/ioctl_bt848.h; } ||
4217 check_header dev/ic/bt8xx.h
4218
4219 check_header sndio.h
4220 check_header sys/soundcard.h
4221 check_header soundcard.h
4222
4223 enabled_any alsa_indev alsa_outdev &&
4224     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4225
4226 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4227     check_func jack_port_get_latency_range -ljack
4228
4229 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4230
4231 if enabled libcdio; then
4232     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4233     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4234 fi
4235
4236 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4237
4238 enabled x11grab                                           &&
4239 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4240 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4241 { enabled xlib || die "ERROR: Xlib not found"; }
4242
4243 enabled vdpau &&
4244     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4245     disable vdpau
4246
4247 enabled vdpau && enabled xlib &&
4248     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4249     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4250     enable vdpau_x11
4251
4252 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4253
4254 # add some useful compiler flags if supported
4255 check_cflags -Wdeclaration-after-statement
4256 check_cflags -Wall
4257 check_cflags -Wdisabled-optimization
4258 check_cflags -Wpointer-arith
4259 check_cflags -Wredundant-decls
4260 check_cflags -Wcast-qual
4261 check_cflags -Wwrite-strings
4262 check_cflags -Wtype-limits
4263 check_cflags -Wundef
4264 check_cflags -Wmissing-prototypes
4265 check_cflags -Wstrict-prototypes
4266 enabled extra_warnings && check_cflags -Winline
4267
4268 check_disable_warning(){
4269     warning_flag=-W${1#-Wno-}
4270     test_cflags $warning_flag && add_cflags $1
4271 }
4272
4273 check_disable_warning -Wno-parentheses
4274 check_disable_warning -Wno-switch
4275 check_disable_warning -Wno-format-zero-length
4276 check_disable_warning -Wno-pointer-sign
4277
4278 # add some linker flags
4279 check_ldflags -Wl,--warn-common
4280 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4281 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4282
4283 # add some strip flags
4284 # -wN '..@*' is more selective than -x, but not available everywhere.
4285 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4286
4287 enabled neon_clobber_test &&
4288     check_ldflags -Wl,--wrap,avcodec_open2              \
4289                   -Wl,--wrap,avcodec_decode_audio4      \
4290                   -Wl,--wrap,avcodec_decode_video2      \
4291                   -Wl,--wrap,avcodec_decode_subtitle2   \
4292                   -Wl,--wrap,avcodec_encode_audio2      \
4293                   -Wl,--wrap,avcodec_encode_video2      \
4294                   -Wl,--wrap,avcodec_encode_subtitle    \
4295                   -Wl,--wrap,avresample_convert ||
4296     disable neon_clobber_test
4297
4298 enabled xmm_clobber_test &&
4299     check_ldflags -Wl,--wrap,avcodec_open2              \
4300                   -Wl,--wrap,avcodec_decode_audio4      \
4301                   -Wl,--wrap,avcodec_decode_video2      \
4302                   -Wl,--wrap,avcodec_decode_subtitle2   \
4303                   -Wl,--wrap,avcodec_encode_audio2      \
4304                   -Wl,--wrap,avcodec_encode_video2      \
4305                   -Wl,--wrap,avcodec_encode_subtitle    \
4306                   -Wl,--wrap,avresample_convert         \
4307                   -Wl,--wrap,sws_scale ||
4308     disable xmm_clobber_test
4309
4310 echo "X{};" > $TMPV
4311 if test_ldflags -Wl,--version-script,$TMPV; then
4312     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4313     check_cc <<EOF && enable symver_asm_label
4314 void ff_foo(void) __asm__ ("av_foo@VERSION");
4315 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4316 EOF
4317     check_cc <<EOF && enable symver_gnu_asm
4318 __asm__(".symver ff_foo,av_foo@VERSION");
4319 void ff_foo(void) {}
4320 EOF
4321 fi
4322
4323 if [ -z "$optflags" ]; then
4324     if enabled small; then
4325         optflags=$cflags_size
4326     elif enabled optimizations; then
4327         optflags=$cflags_speed
4328     else
4329         optflags=$cflags_noopt
4330     fi
4331 fi
4332
4333 check_optflags(){
4334     check_cflags "$@"
4335     enabled lto && check_ldflags "$@"
4336 }
4337
4338
4339 if enabled lto; then
4340     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4341     check_cflags  -flto
4342     check_ldflags -flto $cpuflags
4343 fi
4344
4345 check_optflags $optflags
4346 check_optflags -fno-math-errno
4347 check_optflags -fno-signed-zeros
4348
4349 if enabled icc; then
4350     # Just warnings, no remarks
4351     check_cflags -w1
4352     # -wd: Disable following warnings
4353     # 144, 167, 556: -Wno-pointer-sign
4354     # 1292: attribute "foo" ignored
4355     # 1419: external declaration in primary source file
4356     # 10006: ignoring unknown option -fno-signed-zeros
4357     # 10148: ignoring unknown option -Wno-parentheses
4358     # 10156: ignoring option '-W'; no argument required
4359     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4360     # 11030: Warning unknown option --as-needed
4361     # 10156: ignoring option '-export'; no argument required
4362     check_ldflags -wd10156,11030
4363     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4364     enable ebp_available
4365     if enabled x86_32; then
4366         icc_version=$($cc -dumpversion)
4367         test ${icc_version%%.*} -ge 11 &&
4368             check_cflags -falign-stack=maintain-16-byte ||
4369             disable aligned_stack
4370     fi
4371 elif enabled ccc; then
4372     # disable some annoying warnings
4373     add_cflags -msg_disable bitnotint
4374     add_cflags -msg_disable mixfuncvoid
4375     add_cflags -msg_disable nonstandcast
4376     add_cflags -msg_disable unsupieee
4377 elif enabled gcc; then
4378     check_optflags -fno-tree-vectorize
4379     check_cflags -Werror=implicit-function-declaration
4380     check_cflags -Werror=missing-prototypes
4381     check_cflags -Werror=return-type
4382     check_cflags -Werror=declaration-after-statement
4383     check_cflags -Werror=vla
4384     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4385 elif enabled llvm_gcc; then
4386     check_cflags -mllvm -stack-alignment=16
4387 elif enabled clang; then
4388     check_cflags -mllvm -stack-alignment=16
4389     check_cflags -Qunused-arguments
4390     check_cflags -Werror=implicit-function-declaration
4391     check_cflags -Werror=missing-prototypes
4392     check_cflags -Werror=return-type
4393 elif enabled cparser; then
4394     add_cflags -Wno-missing-variable-declarations
4395     add_cflags -Wno-empty-statement
4396 elif enabled armcc; then
4397     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4398     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4399     # 2523: use of inline assembly is deprecated
4400     add_cflags -W${armcc_opt},--diag_suppress=2523
4401     add_cflags -W${armcc_opt},--diag_suppress=1207
4402     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4403     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4404     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4405     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4406 elif enabled tms470; then
4407     add_cflags -pds=824 -pds=837
4408     disable inline_asm
4409 elif enabled pathscale; then
4410     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4411 elif enabled_any msvc icl; then
4412     enabled x86_32 && disable aligned_stack
4413     enabled_all x86_32 debug && add_cflags -Oy-
4414     enabled debug && add_ldflags -debug
4415     enable pragma_deprecated
4416     if enabled icl; then
4417         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4418         # (correctly) on icl 13.x.
4419         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4420             add_cflags -Qansi-alias
4421         # icl will pass the inline asm tests but inline asm is currently
4422         # not supported (build will fail)
4423         disable inline_asm
4424     fi
4425 fi
4426
4427 case $as_type in
4428     clang)
4429         add_asflags -Qunused-arguments
4430     ;;
4431 esac
4432
4433 case $ld_type in
4434     clang)
4435         check_ldflags -Qunused-arguments
4436     ;;
4437 esac
4438
4439 case $target_os in
4440     osf1)
4441         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4442     ;;
4443     plan9)
4444         add_cppflags -Dmain=plan9_main
4445     ;;
4446 esac
4447
4448 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4449
4450 check_deps $CONFIG_LIST       \
4451            $CONFIG_EXTRA      \
4452            $HAVE_LIST         \
4453            $ALL_COMPONENTS    \
4454
4455 enabled_all dxva2 CoTaskMemFree &&
4456     prepend avconv_libs $($ldflags_filter "-lole32") &&
4457     enable dxva2_lib
4458
4459 ! enabled_any memalign posix_memalign aligned_malloc &&
4460     enabled $simd_align_16 && enable memalign_hack
4461
4462 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4463
4464 for thread in $THREADS_LIST; do
4465     if enabled $thread; then
4466         test -n "$thread_type" &&
4467             die "ERROR: Only one thread type must be selected." ||
4468             thread_type="$thread"
4469     fi
4470 done
4471
4472 enabled zlib && add_cppflags -DZLIB_CONST
4473
4474 # conditional library dependencies, in linking order
4475 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4476 enabled resample_filter && prepend avfilter_deps "avresample"
4477 enabled scale_filter    && prepend avfilter_deps "swscale"
4478
4479 enabled opus_decoder    && prepend avcodec_deps "avresample"
4480
4481 expand_deps(){
4482     lib_deps=${1}_deps
4483     eval "deps=\$$lib_deps"
4484     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4485     unique $lib_deps
4486 }
4487
4488 map 'expand_deps $v' $LIBRARY_LIST
4489
4490 echo "install prefix            $prefix"
4491 echo "source path               $source_path"
4492 echo "C compiler                $cc"
4493 echo "C library                 $libc_type"
4494 if test "$host_cc" != "$cc"; then
4495     echo "host C compiler           $host_cc"
4496     echo "host C library            $host_libc_type"
4497 fi
4498 echo "ARCH                      $arch ($cpu)"
4499 if test "$build_suffix" != ""; then
4500     echo "build suffix              $build_suffix"
4501 fi
4502 if test "$extra_version" != ""; then
4503     echo "version string suffix     $extra_version"
4504 fi
4505 echo "big-endian                ${bigendian-no}"
4506 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4507 if enabled x86; then
4508     echo "${yasmexe}                      ${yasm-no}"
4509     echo "MMX enabled               ${mmx-no}"
4510     echo "MMXEXT enabled            ${mmxext-no}"
4511     echo "3DNow! enabled            ${amd3dnow-no}"
4512     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4513     echo "SSE enabled               ${sse-no}"
4514     echo "SSSE3 enabled             ${ssse3-no}"
4515     echo "AVX enabled               ${avx-no}"
4516     echo "XOP enabled               ${xop-no}"
4517     echo "FMA3 enabled              ${fma3-no}"
4518     echo "FMA4 enabled              ${fma4-no}"
4519     echo "i686 features enabled     ${i686-no}"
4520     echo "CMOV is fast              ${fast_cmov-no}"
4521     echo "EBX available             ${ebx_available-no}"
4522     echo "EBP available             ${ebp_available-no}"
4523 fi
4524 if enabled aarch64; then
4525     echo "NEON enabled              ${neon-no}"
4526     echo "VFP enabled               ${vfp-no}"
4527 fi
4528 if enabled arm; then
4529     echo "ARMv5TE enabled           ${armv5te-no}"
4530     echo "ARMv6 enabled             ${armv6-no}"
4531     echo "ARMv6T2 enabled           ${armv6t2-no}"
4532     echo "VFP enabled               ${vfp-no}"
4533     echo "NEON enabled              ${neon-no}"
4534 fi
4535 if enabled ppc; then
4536     echo "AltiVec enabled           ${altivec-no}"
4537     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4538     echo "dcbzl available           ${dcbzl-no}"
4539 fi
4540 echo "debug symbols             ${debug-no}"
4541 echo "optimize for size         ${small-no}"
4542 echo "optimizations             ${optimizations-no}"
4543 echo "static                    ${static-no}"
4544 echo "shared                    ${shared-no}"
4545 echo "new filter support        ${avfilter-no}"
4546 echo "network support           ${network-no}"
4547 echo "threading support         ${thread_type-no}"
4548 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4549 echo "SDL support               ${sdl-no}"
4550 test -n "$random_seed" &&
4551     echo "random seed               ${random_seed}"
4552 echo
4553
4554 echo "External libraries:"
4555 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4556 echo
4557
4558 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4559     echo "Enabled ${type}s:"
4560     eval list=\$$(toupper $type)_LIST
4561     print_enabled '_*' $list | print_3_columns
4562     echo
4563 done
4564
4565 license="LGPL version 2.1 or later"
4566 if enabled nonfree; then
4567     license="nonfree and unredistributable"
4568 elif enabled gplv3; then
4569     license="GPL version 3 or later"
4570 elif enabled lgplv3; then
4571     license="LGPL version 3 or later"
4572 elif enabled gpl; then
4573     license="GPL version 2 or later"
4574 fi
4575
4576 echo "License: $license"
4577
4578 echo "Creating config.mak and config.h..."
4579
4580 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4581
4582 config_files="$TMPH config.mak"
4583
4584 cat > config.mak <<EOF
4585 # Automatically generated by configure - do not modify!
4586 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4587 prefix=$prefix
4588 LIBDIR=\$(DESTDIR)$libdir
4589 SHLIBDIR=\$(DESTDIR)$shlibdir
4590 INCDIR=\$(DESTDIR)$incdir
4591 BINDIR=\$(DESTDIR)$bindir
4592 DATADIR=\$(DESTDIR)$datadir
4593 DOCDIR=\$(DESTDIR)$docdir
4594 MANDIR=\$(DESTDIR)$mandir
4595 SRC_PATH=$source_path
4596 CC_IDENT=$cc_ident
4597 ARCH=$arch
4598 INTRINSICS=$intrinsics
4599 CC=$cc
4600 AS=$as
4601 LD=$ld
4602 DEPCC=$dep_cc
4603 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4604 DEPAS=$as
4605 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4606 YASM=$yasmexe
4607 DEPYASM=$yasmexe
4608 AR=$ar
4609 ARFLAGS=$arflags
4610 AR_O=$ar_o
4611 RANLIB=$ranlib
4612 STRIP=$strip
4613 LN_S=$ln_s
4614 CPPFLAGS=$CPPFLAGS
4615 CFLAGS=$CFLAGS
4616 ASFLAGS=$ASFLAGS
4617 AS_C=$AS_C
4618 AS_O=$AS_O
4619 CC_C=$CC_C
4620 CC_E=$CC_E
4621 CC_O=$CC_O
4622 LD_O=$LD_O
4623 LD_LIB=$LD_LIB
4624 LD_PATH=$LD_PATH
4625 DLLTOOL=$dlltool
4626 LDFLAGS=$LDFLAGS
4627 LDEXEFLAGS=$LDEXEFLAGS
4628 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4629 STRIPFLAGS=$STRIPFLAGS
4630 YASMFLAGS=$YASMFLAGS
4631 BUILDSUF=$build_suffix
4632 FULLNAME=$FULLNAME
4633 LIBPREF=$LIBPREF
4634 LIBSUF=$LIBSUF
4635 LIBNAME=$LIBNAME
4636 SLIBPREF=$SLIBPREF
4637 SLIBSUF=$SLIBSUF
4638 EXESUF=$EXESUF
4639 EXTRA_VERSION=$extra_version
4640 CCDEP=$CCDEP
4641 CCDEP_FLAGS=$CCDEP_FLAGS
4642 ASDEP=$ASDEP
4643 ASDEP_FLAGS=$ASDEP_FLAGS
4644 CC_DEPFLAGS=$CC_DEPFLAGS
4645 AS_DEPFLAGS=$AS_DEPFLAGS
4646 HOSTCC=$host_cc
4647 HOSTLD=$host_ld
4648 HOSTCFLAGS=$host_cflags
4649 HOSTCPPFLAGS=$host_cppflags
4650 HOSTEXESUF=$HOSTEXESUF
4651 HOSTLDFLAGS=$host_ldflags
4652 HOSTLIBS=$host_libs
4653 DEPHOSTCC=$host_cc
4654 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4655 HOSTCCDEP=$HOSTCCDEP
4656 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4657 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4658 HOSTCC_C=$HOSTCC_C
4659 HOSTCC_O=$HOSTCC_O
4660 HOSTLD_O=$HOSTLD_O
4661 TARGET_EXEC=$target_exec $target_exec_args
4662 TARGET_PATH=$target_path
4663 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4664 CFLAGS-avplay=$sdl_cflags
4665 ZLIB=$($ldflags_filter -lz)
4666 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4667 EXTRALIBS=$extralibs
4668 COMPAT_OBJS=$compat_objs
4669 EXEOBJS=$exeobjs
4670 INSTALL=install
4671 LIBTARGET=${LIBTARGET}
4672 SLIBNAME=${SLIBNAME}
4673 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4674 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4675 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4676 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4677 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4678 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4679 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4680 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4681 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4682 EOF
4683
4684 get_version(){
4685     lcname=lib${1}
4686     name=$(toupper $lcname)
4687     file=$source_path/$lcname/version.h
4688     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4689     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4690     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4691     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4692     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4693 }
4694
4695 map 'get_version $v' $LIBRARY_LIST
4696
4697 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4698
4699 print_program_libs(){
4700     eval "program_libs=\$${1}_libs"
4701     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4702 }
4703
4704 map 'print_program_libs $v' $PROGRAM_LIST
4705
4706 cat > $TMPH <<EOF
4707 /* Automatically generated by configure - do not modify! */
4708 #ifndef LIBAV_CONFIG_H
4709 #define LIBAV_CONFIG_H
4710 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4711 #define LIBAV_LICENSE "$(c_escape $license)"
4712 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4713 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4714 #define restrict $_restrict
4715 #define EXTERN_PREFIX "${extern_prefix}"
4716 #define EXTERN_ASM ${extern_prefix}
4717 #define SLIBSUF "$SLIBSUF"
4718 EOF
4719
4720 test -n "$malloc_prefix" &&
4721     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4722
4723 if enabled yasm; then
4724     append config_files $TMPASM
4725     printf '' >$TMPASM
4726 fi
4727
4728 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4729
4730 print_config ARCH_   "$config_files" $ARCH_LIST
4731 print_config HAVE_   "$config_files" $HAVE_LIST
4732 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4733                                      $CONFIG_EXTRA      \
4734                                      $ALL_COMPONENTS    \
4735
4736 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4737
4738 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4739 cp_if_changed $TMPH config.h
4740 touch .config
4741
4742 enabled yasm && cp_if_changed $TMPASM config.asm
4743
4744 cat > $TMPH <<EOF
4745 /* Generated by ffconf */
4746 #ifndef AVUTIL_AVCONFIG_H
4747 #define AVUTIL_AVCONFIG_H
4748 EOF
4749
4750 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4751
4752 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4753
4754 cp_if_changed $TMPH libavutil/avconfig.h
4755
4756 test -n "$WARNINGS" && printf "\n$WARNINGS"
4757
4758 # build pkg-config files
4759
4760 lib_version(){
4761     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4762 }
4763
4764 pkgconfig_generate(){
4765     name=$1
4766     shortname=${name#lib}${build_suffix}
4767     comment=$2
4768     version=$3
4769     libs=$4
4770     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4771     requires=${requires%, }
4772     enabled ${name#lib} || return 0
4773     mkdir -p $name
4774     cat <<EOF > $name/$name.pc
4775 prefix=$prefix
4776 exec_prefix=\${prefix}
4777 libdir=$libdir
4778 includedir=$incdir
4779
4780 Name: $name
4781 Description: $comment
4782 Version: $version
4783 Requires: $(enabled shared || echo $requires)
4784 Requires.private: $(enabled shared && echo $requires)
4785 Conflicts:
4786 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4787 Libs.private: $(enabled shared && echo $libs)
4788 Cflags: -I\${includedir}
4789 EOF
4790     cat <<EOF > $name/$name-uninstalled.pc
4791 prefix=
4792 exec_prefix=
4793 libdir=\${pcfiledir}
4794 includedir=${source_path}
4795
4796 Name: $name
4797 Description: $comment
4798 Version: $version
4799 Requires: $requires
4800 Conflicts:
4801 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4802 Cflags: -I\${includedir}
4803 EOF
4804 }
4805
4806 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4807 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
4808 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
4809 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
4810 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
4811 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$LIBM"
4812 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"