configure: Add probe identification of MS armasm
[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="$libdir_default"
2188
2189 # toolchain
2190 ar_default="ar"
2191 cc_default="gcc"
2192 host_cc_default="gcc"
2193 cp_f="cp -f"
2194 ln_s="ln -s -f"
2195 nm_default="nm -g"
2196 objformat="elf"
2197 pkg_config_default=pkg-config
2198 ranlib="ranlib"
2199 strip="strip"
2200 yasmexe="yasm"
2201
2202 nogas=":"
2203
2204 # machine
2205 arch_default=$(uname -m)
2206 cpu="generic"
2207 intrinsics="none"
2208
2209 # OS
2210 target_os_default=$(tolower $(uname -s))
2211 host_os=$target_os_default
2212
2213 # configurable options
2214 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2215
2216 enable asm
2217 enable debug
2218 enable doc
2219 enable optimizations
2220 enable safe_bitstream_reader
2221 enable static
2222 enable swscale_alpha
2223
2224 # By default, enable only those hwaccels that have no external dependencies.
2225 enable dxva2 vdpau
2226
2227 # build settings
2228 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2229 LIBPREF="lib"
2230 LIBSUF=".a"
2231 FULLNAME='$(NAME)$(BUILDSUF)'
2232 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2233 SLIBPREF="lib"
2234 SLIBSUF=".so"
2235 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2236 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2237 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2238 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2239 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2240 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2241
2242 asflags_filter=echo
2243 cflags_filter=echo
2244 ldflags_filter=echo
2245
2246 AS_C='-c'
2247 AS_O='-o $@'
2248 CC_C='-c'
2249 CC_E='-E -o $@'
2250 CC_O='-o $@'
2251 LD_O='-o $@'
2252 LD_LIB='-l%'
2253 LD_PATH='-L'
2254 HOSTCC_C='-c'
2255 HOSTCC_E='-E -o $@'
2256 HOSTCC_O='-o $@'
2257 HOSTLD_O='-o $@'
2258
2259 host_libs='-lm'
2260 host_cflags_filter=echo
2261 host_ldflags_filter=echo
2262
2263 target_path='$(CURDIR)'
2264
2265 # since the object filename is not given with the -MM flag, the compiler
2266 # is only able to print the basename, and we must add the path ourselves
2267 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2268 DEPFLAGS='-MM'
2269
2270 # find source path
2271 if test -f configure; then
2272     source_path=.
2273 else
2274     source_path=$(cd $(dirname "$0"); pwd)
2275     echo "$source_path" | grep -q '[[:blank:]]' &&
2276         die "Out of tree builds are impossible with whitespace in source path."
2277     test -e "$source_path/config.h" &&
2278         die "Out of tree builds are impossible with config.h in source dir."
2279 fi
2280
2281 for v in "$@"; do
2282     r=${v#*=}
2283     l=${v%"$r"}
2284     r=$(sh_quote "$r")
2285     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2286 done
2287
2288 find_things(){
2289     thing=$1
2290     pattern=$2
2291     file=$source_path/$3
2292     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2293 }
2294
2295 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2296 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2297 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2298 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2299 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2300 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2301 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2302 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2303 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2304 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2305 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2306
2307 ALL_COMPONENTS="
2308     $BSF_LIST
2309     $DECODER_LIST
2310     $DEMUXER_LIST
2311     $ENCODER_LIST
2312     $FILTER_LIST
2313     $HWACCEL_LIST
2314     $INDEV_LIST
2315     $MUXER_LIST
2316     $OUTDEV_LIST
2317     $PARSER_LIST
2318     $PROTOCOL_LIST
2319 "
2320
2321 for n in $COMPONENT_LIST; do
2322     v=$(toupper ${n%s})_LIST
2323     eval enable \$$v
2324     eval ${n}_if_any="\$$v"
2325 done
2326
2327 enable $ARCH_EXT_LIST
2328
2329 die_unknown(){
2330     echo "Unknown option \"$1\"."
2331     echo "See $0 --help for available options."
2332     exit 1
2333 }
2334
2335 print_3_columns() {
2336     cat | tr ' ' '\n' | sort | pr -r -3 -t
2337 }
2338
2339 show_list() {
2340     suffix=_$1
2341     shift
2342     echo $* | sed s/$suffix//g | print_3_columns
2343     exit 0
2344 }
2345
2346 rand_list(){
2347     IFS=', '
2348     set -- $*
2349     unset IFS
2350     for thing; do
2351         comp=${thing%:*}
2352         prob=${thing#$comp}
2353         prob=${prob#:}
2354         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2355         echo "prob ${prob:-0.5}"
2356         printf '%s\n' $comp
2357     done
2358 }
2359
2360 do_random(){
2361     action=$1
2362     shift
2363     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2364     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2365 }
2366
2367 for opt do
2368     optval="${opt#*=}"
2369     case "$opt" in
2370         --extra-ldflags=*)
2371             add_ldflags $optval
2372         ;;
2373         --extra-ldexeflags=*)
2374             add_ldexeflags $optval
2375         ;;
2376         --extra-libs=*)
2377             add_extralibs $optval
2378         ;;
2379         --disable-devices)
2380             disable $INDEV_LIST $OUTDEV_LIST
2381         ;;
2382         --enable-debug=*)
2383             debuglevel="$optval"
2384         ;;
2385         --disable-programs)
2386             disable $PROGRAM_LIST
2387         ;;
2388         --disable-everything)
2389             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2390         ;;
2391         --disable-all)
2392             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2393             disable $LIBRARY_LIST $PROGRAM_LIST doc
2394         ;;
2395         --enable-random|--disable-random)
2396             action=${opt%%-random}
2397             do_random ${action#--} $COMPONENT_LIST
2398         ;;
2399         --enable-random=*|--disable-random=*)
2400             action=${opt%%-random=*}
2401             do_random ${action#--} $optval
2402         ;;
2403         --enable-*=*|--disable-*=*)
2404             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2405             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2406             eval list=\$$(toupper $thing)_LIST
2407             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2408             $action $(filter "$name" $list)
2409         ;;
2410         --enable-avserver|--disable-avserver*)
2411             warn "avserver has been removed, the ${opt} option is only"\
2412                  "provided for compatibility and will be removed in the future"
2413         ;;
2414         --enable-?*|--disable-?*)
2415             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2416             if is_in $option $COMPONENT_LIST; then
2417                 test $action = disable && action=unset
2418                 eval $action \$$(toupper ${option%s})_LIST
2419             elif is_in $option $CMDLINE_SELECT; then
2420                 $action $option
2421             else
2422                 die_unknown $opt
2423             fi
2424         ;;
2425         --list-*)
2426             NAME="${opt#--list-}"
2427             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2428             NAME=${NAME%s}
2429             eval show_list $NAME \$$(toupper $NAME)_LIST
2430         ;;
2431         --help|-h) show_help
2432         ;;
2433         *)
2434             optname="${opt%%=*}"
2435             optname="${optname#--}"
2436             optname=$(echo "$optname" | sed 's/-/_/g')
2437             if is_in $optname $CMDLINE_SET; then
2438                 eval $optname='$optval'
2439             elif is_in $optname $CMDLINE_APPEND; then
2440                 append $optname "$optval"
2441             else
2442                 die_unknown $opt
2443             fi
2444         ;;
2445     esac
2446 done
2447
2448 disabled logging && logfile=/dev/null
2449
2450 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2451 set >> $logfile
2452
2453 test -n "$cross_prefix" && enable cross_compile
2454
2455 if enabled cross_compile; then
2456     test -n "$arch" && test -n "$target_os" ||
2457         die "Must specify target arch and OS when cross-compiling"
2458 fi
2459
2460 ar_default="${cross_prefix}${ar_default}"
2461 cc_default="${cross_prefix}${cc_default}"
2462 nm_default="${cross_prefix}${nm_default}"
2463 pkg_config_default="${cross_prefix}${pkg_config_default}"
2464 ranlib="${cross_prefix}${ranlib}"
2465 strip="${cross_prefix}${strip}"
2466
2467 sysinclude_default="${sysroot}/usr/include"
2468
2469 case "$toolchain" in
2470     clang-asan)
2471         cc_default="clang"
2472         add_cflags  -fsanitize=address
2473         add_ldflags -fsanitize=address
2474     ;;
2475     clang-tsan)
2476         cc_default="clang"
2477         add_cflags  -fsanitize=thread -pie
2478         add_ldflags -fsanitize=thread -pie
2479     ;;
2480     clang-usan)
2481         cc_default="clang"
2482         add_cflags  -fsanitize=undefined -O1
2483         add_ldflags -fsanitize=undefined
2484     ;;
2485     gcc-asan)
2486         cc_default="gcc"
2487         add_cflags  -fsanitize=address
2488         add_ldflags -fsanitize=address
2489     ;;
2490     gcc-tsan)
2491         cc_default="gcc"
2492         add_cflags  -fsanitize=thread -pie -fPIC
2493         add_ldflags -fsanitize=thread -pie -fPIC
2494     ;;
2495     gcc-usan)
2496         cc_default="gcc"
2497         add_cflags  -fsanitize=undefined
2498         add_ldflags -fsanitize=undefined
2499     ;;
2500     valgrind-massif)
2501         target_exec_default="valgrind"
2502         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2503     ;;
2504     valgrind-memcheck)
2505         target_exec_default="valgrind"
2506         target_exec_args="--track-origins=yes --leak-check=full"
2507     ;;
2508     msvc)
2509         # Check whether the current MSVC version needs the C99 converter.
2510         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2511         # support enough of C99 to build libav. Default to the new
2512         # behaviour if the regexp was unable to match anything, since this
2513         # successfully parses the version number of existing supported
2514         # versions that require the converter (MSVC 2010 and 2012).
2515         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2516         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2517             cc_default="cl"
2518         else
2519             cc_default="c99wrap cl"
2520         fi
2521         ld_default="link"
2522         nm_default="dumpbin -symbols"
2523         ar_default="lib"
2524         target_os_default="win32"
2525         # Use a relative path for TMPDIR. This makes sure all the
2526         # ffconf temp files are written with a relative path, avoiding
2527         # issues with msys/win32 path conversion for MSVC parameters
2528         # such as -Fo<file> or -out:<file>.
2529         TMPDIR=.
2530     ;;
2531     icl)
2532         cc_default="icl"
2533         ld_default="xilink"
2534         nm_default="dumpbin -symbols"
2535         ar_default="xilib"
2536         target_os_default="win32"
2537         TMPDIR=.
2538     ;;
2539     gcov)
2540         add_cflags  -fprofile-arcs -ftest-coverage
2541         add_ldflags -fprofile-arcs -ftest-coverage
2542     ;;
2543     hardened)
2544         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2545         add_ldflags -Wl,-z,relro -Wl,-z,now
2546     ;;
2547     ?*)
2548         die "Unknown toolchain $toolchain"
2549     ;;
2550 esac
2551
2552 set_default arch cc pkg_config sysinclude target_exec target_os
2553 enabled cross_compile || host_cc_default=$cc
2554 set_default host_cc
2555
2556 if ! $pkg_config --version >/dev/null 2>&1; then
2557     warn "$pkg_config not found, library detection may fail."
2558     pkg_config=false
2559 fi
2560
2561 exesuf() {
2562     case $1 in
2563         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2564     esac
2565 }
2566
2567 EXESUF=$(exesuf $target_os)
2568 HOSTEXESUF=$(exesuf $host_os)
2569
2570 # set temporary file name
2571 : ${TMPDIR:=$TEMPDIR}
2572 : ${TMPDIR:=$TMP}
2573 : ${TMPDIR:=/tmp}
2574
2575 if ! check_cmd mktemp -u XXXXXX; then
2576     # simple replacement for missing mktemp
2577     # NOT SAFE FOR GENERAL USE
2578     mktemp(){
2579         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2580     }
2581 fi
2582
2583 tmpfile(){
2584     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2585         (set -C; exec > $tmp) 2>/dev/null ||
2586         die "Unable to create temporary file in $TMPDIR."
2587     append TMPFILES $tmp
2588     eval $1=$tmp
2589 }
2590
2591 trap 'rm -f -- $TMPFILES' EXIT
2592
2593 tmpfile TMPASM .asm
2594 tmpfile TMPC   .c
2595 tmpfile TMPE   $EXESUF
2596 tmpfile TMPH   .h
2597 tmpfile TMPO   .o
2598 tmpfile TMPS   .S
2599 tmpfile TMPSH  .sh
2600 tmpfile TMPV   .ver
2601
2602 unset -f mktemp
2603
2604 chmod +x $TMPE
2605
2606 # make sure we can execute files in $TMPDIR
2607 cat > $TMPSH 2>> $logfile <<EOF
2608 #! /bin/sh
2609 EOF
2610 chmod +x $TMPSH >> $logfile 2>&1
2611 if ! $TMPSH >> $logfile 2>&1; then
2612     cat <<EOF
2613 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2614 variable to another directory and make sure that it is not mounted noexec.
2615 EOF
2616     die "Sanity test failed."
2617 fi
2618
2619 ccc_flags(){
2620     for flag; do
2621         case $flag in
2622             -std=c99)           echo -c99                       ;;
2623             -mcpu=*)            echo -arch ${flag#*=}           ;;
2624             -mieee)             echo -ieee                      ;;
2625             -O*|-fast)          echo $flag                      ;;
2626             -fno-math-errno)    echo -assume nomath_errno       ;;
2627             -g)                 echo -g3                        ;;
2628             -Wall)              echo -msg_enable level2         ;;
2629             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2630             -Wl,*)              echo $flag                      ;;
2631             -f*|-W*)                                            ;;
2632             *)                  echo $flag                      ;;
2633         esac
2634    done
2635 }
2636
2637 cparser_flags(){
2638     for flag; do
2639         case $flag in
2640             -Wno-switch)             echo -Wno-switch-enum ;;
2641             -Wno-format-zero-length) ;;
2642             -Wdisabled-optimization) ;;
2643             -Wno-pointer-sign)       echo -Wno-other ;;
2644             *)                       echo $flag ;;
2645         esac
2646     done
2647 }
2648
2649 msvc_common_flags(){
2650     for flag; do
2651         case $flag in
2652             # In addition to specifying certain flags under the compiler
2653             # specific filters, they must be specified here as well or else the
2654             # generic catch all at the bottom will print the original flag.
2655             -Wall)                ;;
2656             -std=c99)             ;;
2657             # Common flags
2658             -fomit-frame-pointer) ;;
2659             -g)                   echo -Z7 ;;
2660             -fno-math-errno)      ;;
2661             -fno-common)          ;;
2662             -fno-signed-zeros)    ;;
2663             -fPIC)                ;;
2664             -mthumb)              ;;
2665             -march=*)             ;;
2666             -lz)                  echo zlib.lib ;;
2667             -lavifil32)           echo vfw32.lib ;;
2668             -lavicap32)           echo vfw32.lib user32.lib ;;
2669             -l*)                  echo ${flag#-l}.lib ;;
2670             *)                    echo $flag ;;
2671         esac
2672     done
2673 }
2674
2675 msvc_flags(){
2676     msvc_common_flags "$@"
2677     for flag; do
2678         case $flag in
2679             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2680                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2681                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2682                                        -wd4273 ;;
2683         esac
2684     done
2685 }
2686
2687 icl_flags(){
2688     msvc_common_flags "$@"
2689     for flag; do
2690         case $flag in
2691             # Despite what Intel's documentation says -Wall, which is supported
2692             # on Windows, does enable remarks so disable them here.
2693             -Wall)                echo $flag -Qdiag-disable:remark ;;
2694             -std=c99)             echo -Qstd=c99 ;;
2695         esac
2696     done
2697 }
2698
2699 pgi_flags(){
2700     for flag; do
2701         case $flag in
2702             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2703             -fomit-frame-pointer) echo -Mnoframe ;;
2704             -g)                   echo -gopt ;;
2705             *)                    echo $flag ;;
2706         esac
2707     done
2708 }
2709
2710 suncc_flags(){
2711     for flag; do
2712         case $flag in
2713             -march=*|-mcpu=*)
2714                 case "${flag#*=}" in
2715                     native)                   echo -xtarget=native       ;;
2716                     v9|niagara)               echo -xarch=sparc          ;;
2717                     ultrasparc)               echo -xarch=sparcvis       ;;
2718                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2719                     i586|pentium)             echo -xchip=pentium        ;;
2720                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2721                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2722                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2723                     pentium4*)          echo -xtarget=pentium4           ;;
2724                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2725                     *-sse3)             echo -xarch=sse3                 ;;
2726                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2727                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2728                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2729                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2730                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2731                     k8|opteron|athlon64|athlon-fx)
2732                                                echo -xarch=sse2a         ;;
2733                     athlon*)                   echo -xarch=pentium_proa  ;;
2734                 esac
2735                 ;;
2736             -std=c99)             echo -xc99              ;;
2737             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2738             -fPIC)                echo -KPIC -xcode=pic32 ;;
2739             -W*,*)                echo $flag              ;;
2740             -f*-*|-W*|-mimpure-text)                      ;;
2741             -shared)              echo -G                 ;;
2742             *)                    echo $flag              ;;
2743         esac
2744     done
2745 }
2746
2747 tms470_flags(){
2748     for flag; do
2749         case $flag in
2750             -march=*|-mcpu=*)
2751                 case "${flag#*=}" in
2752                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2753                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2754                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2755                     armv6*|arm11*)          echo -mv=6   ;;
2756                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2757                                             echo -mv=5e  ;;
2758                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2759                 esac
2760                 ;;
2761             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2762             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2763             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2764             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2765             -msoft-float)   echo --float_support=vfplib       ;;
2766             -O[0-3]|-mf=*)  echo $flag                        ;;
2767             -g)             echo -g -mn                       ;;
2768             -pds=*)         echo $flag                        ;;
2769             -D*|-I*)        echo $flag                        ;;
2770             --gcc|--abi=*)  echo $flag                        ;;
2771             -me)            echo $flag                        ;;
2772         esac
2773     done
2774 }
2775
2776 probe_cc(){
2777     pfx=$1
2778     _cc=$2
2779
2780     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2781     unset _ld_o _ldflags _ld_lib _ld_path
2782     unset _depflags _DEPCMD _DEPFLAGS
2783     _flags_filter=echo
2784
2785     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2786         _type=llvm_gcc
2787         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2788         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2789         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2790         _cflags_speed='-O3'
2791         _cflags_size='-Os'
2792     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2793         _type=gcc
2794         gcc_version=$($_cc --version | head -n1)
2795         gcc_basever=$($_cc -dumpversion)
2796         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2797         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2798         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2799         if ! $_cc -dumpversion | grep -q '^2\.'; then
2800             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2801         fi
2802         _cflags_speed='-O3'
2803         _cflags_size='-Os'
2804     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2805         _type=icc
2806         _ident=$($_cc --version | head -n1)
2807         _depflags='-MMD'
2808         _cflags_speed='-O3'
2809         _cflags_size='-Os'
2810         _cflags_noopt='-O1'
2811     elif $_cc -v 2>&1 | grep -q xlc; then
2812         _type=xlc
2813         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2814         _cflags_speed='-O5'
2815         _cflags_size='-O5 -qcompact'
2816     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2817         _type=ccc
2818         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2819         _DEPFLAGS='-M'
2820         _cflags_speed='-fast'
2821         _cflags_size='-O1'
2822         _flags_filter=ccc_flags
2823     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2824         test -d "$sysroot" || die "No valid sysroot specified."
2825         _type=armcc
2826         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2827         armcc_conf="$PWD/armcc.conf"
2828         $_cc --arm_linux_configure                 \
2829              --arm_linux_config_file="$armcc_conf" \
2830              --configure_sysroot="$sysroot"        \
2831              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2832              die "Error creating armcc configuration file."
2833         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2834         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2835         as_default="${cross_prefix}gcc"
2836         _depflags='-MMD'
2837         _cflags_speed='-O3'
2838         _cflags_size='-Os'
2839     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2840         _type=tms470
2841         _ident=$($_cc -version | head -n1 | tr -s ' ')
2842         _flags='--gcc --abi=eabi -me'
2843         _cc_e='-ppl -fe=$@'
2844         _cc_o='-fe=$@'
2845         _depflags='-ppa -ppd=$(@:.o=.d)'
2846         _cflags_speed='-O3 -mf=5'
2847         _cflags_size='-O3 -mf=2'
2848         _flags_filter=tms470_flags
2849     elif $_cc -v 2>&1 | grep -q clang; then
2850         _type=clang
2851         _ident=$($_cc --version | head -n1)
2852         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2853         _cflags_speed='-O3'
2854         _cflags_size='-Os'
2855     elif $_cc -V 2>&1 | grep -q Sun; then
2856         _type=suncc
2857         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2858         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2859         _DEPFLAGS='-xM1 -xc99'
2860         _ldflags='-std=c99'
2861         _cflags_speed='-O5'
2862         _cflags_size='-O5 -xspace'
2863         _flags_filter=suncc_flags
2864     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2865         _type=pathscale
2866         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2867         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2868         _cflags_speed='-O2'
2869         _cflags_size='-Os'
2870         _flags_filter='filter_out -Wdisabled-optimization'
2871     elif $_cc -v 2>&1 | grep -q Open64; then
2872         _type=open64
2873         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2874         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2875         _cflags_speed='-O2'
2876         _cflags_size='-Os'
2877         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2878     elif $_cc -V 2>&1 | grep -q Portland; then
2879         _type=pgi
2880         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2881         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2882         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2883         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2884         _cflags_noopt="-O1"
2885         _flags_filter=pgi_flags
2886     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
2887         _type=armasm
2888         _ident=$($_cc | head -n1)
2889         # 4509: "This form of conditional instruction is deprecated"
2890         _flags="-nologo -ignore 4509"
2891     elif $_cc 2>&1 | grep -q Microsoft; then
2892         _type=msvc
2893         _ident=$($cc 2>&1 | head -n1)
2894         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2895         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2896         _cflags_speed="-O2"
2897         _cflags_size="-O1"
2898         if $_cc 2>&1 | grep -q Linker; then
2899             _ld_o='-out:$@'
2900         else
2901             _ld_o='-Fe$@'
2902         fi
2903         _cc_o='-Fo$@'
2904         _cc_e='-P -Fi$@'
2905         _flags_filter=msvc_flags
2906         _ld_lib='lib%.a'
2907         _ld_path='-libpath:'
2908         _flags='-nologo'
2909         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2910         if [ $pfx = hostcc ]; then
2911             append _cflags -Dsnprintf=_snprintf
2912         fi
2913     elif $_cc 2>&1 | grep -q Intel; then
2914         _type=icl
2915         _ident=$($cc 2>&1 | head -n1)
2916         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2917         # Not only is O3 broken on 13.x+ but it is slower on all previous
2918         # versions (tested) as well.
2919         _cflags_speed="-O2"
2920         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2921         if $_cc 2>&1 | grep -q Linker; then
2922             _ld_o='-out:$@'
2923         else
2924             _ld_o='-Fe$@'
2925         fi
2926         _cc_o='-Fo$@'
2927         _cc_e='-P'
2928         _flags_filter=icl_flags
2929         _ld_lib='lib%.a'
2930         _ld_path='-libpath:'
2931         # -Qdiag-error to make icl error when seeing certain unknown arguments
2932         _flags='-nologo -Qdiag-error:4044,10157'
2933         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2934         # with MSVC which enables it by default.
2935         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2936         if [ $pfx = hostcc ]; then
2937             append _cflags -Dsnprintf=_snprintf
2938         fi
2939     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2940         _type=cparser
2941         _ident=$($_cc --version | head -n1)
2942         _depflags='-MMD'
2943         _cflags_speed='-O4'
2944         _cflags_size='-O2'
2945         _flags_filter=cparser_flags
2946     fi
2947
2948     eval ${pfx}_type=\$_type
2949     eval ${pfx}_ident=\$_ident
2950 }
2951
2952 set_ccvars(){
2953     eval ${1}_C=\${_cc_c-\${${1}_C}}
2954     eval ${1}_E=\${_cc_e-\${${1}_E}}
2955     eval ${1}_O=\${_cc_o-\${${1}_O}}
2956
2957     if [ -n "$_depflags" ]; then
2958         eval ${1}_DEPFLAGS=\$_depflags
2959     else
2960         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2961         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2962         eval DEP${1}FLAGS=\$_flags
2963     fi
2964 }
2965
2966 probe_cc cc "$cc"
2967 cflags_filter=$_flags_filter
2968 cflags_speed=$_cflags_speed
2969 cflags_size=$_cflags_size
2970 cflags_noopt=$_cflags_noopt
2971 add_cflags $_flags $_cflags
2972 cc_ldflags=$_ldflags
2973 set_ccvars CC
2974
2975 probe_cc hostcc "$host_cc"
2976 host_cflags_filter=$_flags_filter
2977 add_host_cflags  $_flags $_cflags
2978 set_ccvars HOSTCC
2979
2980 test -n "$cc_type" && enable $cc_type ||
2981     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2982
2983 : ${as_default:=$cc}
2984 : ${dep_cc_default:=$cc}
2985 : ${ld_default:=$cc}
2986 : ${host_ld_default:=$host_cc}
2987 set_default ar as dep_cc ld host_ld
2988
2989 probe_cc as "$as"
2990 asflags_filter=$_flags_filter
2991 add_asflags $_flags $_cflags
2992 set_ccvars AS
2993
2994 probe_cc ld "$ld"
2995 ldflags_filter=$_flags_filter
2996 add_ldflags $_flags $_ldflags
2997 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2998 LD_O=${_ld_o-$LD_O}
2999 LD_LIB=${_ld_lib-$LD_LIB}
3000 LD_PATH=${_ld_path-$LD_PATH}
3001
3002 probe_cc hostld "$host_ld"
3003 host_ldflags_filter=$_flags_filter
3004 add_host_ldflags $_flags $_ldflags
3005 HOSTLD_O=${_ld_o-$HOSTLD_O}
3006
3007 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3008     probe_cc depcc "$dep_cc"
3009     CCDEP=${_DEPCMD:-$DEPCMD}
3010     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3011     DEPCCFLAGS=$_flags
3012 fi
3013
3014 if $ar 2>&1 | grep -q Microsoft; then
3015     arflags="-nologo"
3016     ar_o='-out:$@'
3017 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3018     arflags="rq"
3019     ar_o='$@'
3020 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3021     arflags='-Xany -r -c'
3022     ar_o='$@'
3023 else
3024     arflags="rc"
3025     ar_o='$@'
3026 fi
3027
3028 add_cflags $extra_cflags
3029 add_asflags $extra_cflags
3030
3031 if test -n "$sysroot"; then
3032     case "$cc_type" in
3033         gcc|llvm_gcc|clang)
3034             add_cppflags --sysroot="$sysroot"
3035             add_ldflags --sysroot="$sysroot"
3036         ;;
3037         tms470)
3038             add_cppflags -I"$sysinclude"
3039             add_ldflags  --sysroot="$sysroot"
3040         ;;
3041     esac
3042 fi
3043
3044 if test "$cpu" = host; then
3045     enabled cross_compile &&
3046         die "--cpu=host makes no sense when cross-compiling."
3047
3048     case "$cc_type" in
3049         gcc|llvm_gcc)
3050             check_native(){
3051                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3052                 sed -n "/cc1.*$1=/{
3053                             s/.*$1=\\([^ ]*\\).*/\\1/
3054                             p
3055                             q
3056                         }" $TMPE
3057             }
3058             cpu=$(check_native -march || check_native -mcpu)
3059         ;;
3060     esac
3061
3062     test "${cpu:-host}" = host &&
3063         die "--cpu=host not supported with compiler $cc"
3064 fi
3065
3066 # Deal with common $arch aliases
3067 case "$arch" in
3068     aarch64|arm64)
3069         arch="aarch64"
3070     ;;
3071     arm*)
3072         arch="arm"
3073     ;;
3074     mips*|IP*)
3075         arch="mips"
3076     ;;
3077     parisc*|hppa*)
3078         arch="parisc"
3079     ;;
3080     "Power Macintosh"|ppc*|powerpc*)
3081         arch="ppc"
3082     ;;
3083     s390|s390x)
3084         arch="s390"
3085     ;;
3086     sh4|sh)
3087         arch="sh4"
3088     ;;
3089     sun4u|sparc*)
3090         arch="sparc"
3091     ;;
3092     tilegx|tile-gx)
3093         arch="tilegx"
3094     ;;
3095     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3096         arch="x86"
3097     ;;
3098 esac
3099
3100 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3101 enable $arch
3102
3103 # Add processor-specific flags
3104 if enabled aarch64; then
3105
3106     case $cpu in
3107         armv*)
3108             cpuflags="-march=$cpu"
3109         ;;
3110         *)
3111             cpuflags="-mcpu=$cpu"
3112         ;;
3113     esac
3114
3115 elif enabled alpha; then
3116
3117     cpuflags="-mcpu=$cpu"
3118
3119 elif enabled arm; then
3120
3121     check_arm_arch() {
3122         check_cpp_condition stddef.h \
3123             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3124             $cpuflags
3125     }
3126
3127     probe_arm_arch() {
3128         if   check_arm_arch 4;        then echo armv4;
3129         elif check_arm_arch 4T;       then echo armv4t;
3130         elif check_arm_arch 5;        then echo armv5;
3131         elif check_arm_arch 5E;       then echo armv5e;
3132         elif check_arm_arch 5T;       then echo armv5t;
3133         elif check_arm_arch 5TE;      then echo armv5te;
3134         elif check_arm_arch 5TEJ;     then echo armv5te;
3135         elif check_arm_arch 6;        then echo armv6;
3136         elif check_arm_arch 6J;       then echo armv6j;
3137         elif check_arm_arch 6K;       then echo armv6k;
3138         elif check_arm_arch 6Z;       then echo armv6z;
3139         elif check_arm_arch 6ZK;      then echo armv6zk;
3140         elif check_arm_arch 6T2;      then echo armv6t2;
3141         elif check_arm_arch 7;        then echo armv7;
3142         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3143         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3144         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3145         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3146         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3147         fi
3148     }
3149
3150     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3151
3152     case $cpu in
3153         armv*)
3154             cpuflags="-march=$cpu"
3155             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3156         ;;
3157         *)
3158             cpuflags="-mcpu=$cpu"
3159             case $cpu in
3160                 cortex-a*)                               subarch=armv7a  ;;
3161                 cortex-r*)                               subarch=armv7r  ;;
3162                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3163                 arm11*)                                  subarch=armv6   ;;
3164                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3165                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3166                 *)                             subarch=$(probe_arm_arch) ;;
3167             esac
3168         ;;
3169     esac
3170
3171     case "$subarch" in
3172         armv5t*)    enable fast_clz                ;;
3173         armv[6-8]*) enable fast_clz fast_unaligned ;;
3174     esac
3175
3176 elif enabled avr32; then
3177
3178     case $cpu in
3179         ap7[02]0[0-2])
3180             subarch="avr32_ap"
3181             cpuflags="-mpart=$cpu"
3182         ;;
3183         ap)
3184             subarch="avr32_ap"
3185             cpuflags="-march=$cpu"
3186         ;;
3187         uc3[ab]*)
3188             subarch="avr32_uc"
3189             cpuflags="-mcpu=$cpu"
3190         ;;
3191         uc)
3192             subarch="avr32_uc"
3193             cpuflags="-march=$cpu"
3194         ;;
3195     esac
3196
3197 elif enabled bfin; then
3198
3199     cpuflags="-mcpu=$cpu"
3200
3201 elif enabled mips; then
3202
3203     cpuflags="-march=$cpu"
3204
3205 elif enabled ppc; then
3206
3207     disable ldbrx
3208
3209     case $(tolower $cpu) in
3210         601|ppc601|powerpc601)
3211             cpuflags="-mcpu=601"
3212             disable altivec
3213         ;;
3214         603*|ppc603*|powerpc603*)
3215             cpuflags="-mcpu=603"
3216             disable altivec
3217         ;;
3218         604*|ppc604*|powerpc604*)
3219             cpuflags="-mcpu=604"
3220             disable altivec
3221         ;;
3222         g3|75*|ppc75*|powerpc75*)
3223             cpuflags="-mcpu=750"
3224             disable altivec
3225         ;;
3226         g4|745*|ppc745*|powerpc745*)
3227             cpuflags="-mcpu=7450"
3228         ;;
3229         74*|ppc74*|powerpc74*)
3230             cpuflags="-mcpu=7400"
3231         ;;
3232         g5|970|ppc970|powerpc970)
3233             cpuflags="-mcpu=970"
3234         ;;
3235         power[3-7]*)
3236             cpuflags="-mcpu=$cpu"
3237         ;;
3238         cell)
3239             cpuflags="-mcpu=cell"
3240             enable ldbrx
3241         ;;
3242         e500mc)
3243             cpuflags="-mcpu=e500mc"
3244             disable altivec
3245         ;;
3246         e500v2)
3247             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3248             disable altivec
3249             disable dcbzl
3250         ;;
3251         e500)
3252             cpuflags="-mcpu=8540 -mhard-float"
3253             disable altivec
3254             disable dcbzl
3255         ;;
3256     esac
3257
3258 elif enabled sparc; then
3259
3260     case $cpu in
3261         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3262             cpuflags="-mcpu=$cpu"
3263         ;;
3264         ultrasparc*|niagara[234])
3265             cpuflags="-mcpu=$cpu"
3266         ;;
3267     esac
3268
3269 elif enabled x86; then
3270
3271     case $cpu in
3272         i[345]86|pentium)
3273             cpuflags="-march=$cpu"
3274             disable mmx
3275         ;;
3276         # targets that do NOT support nopl and conditional mov (cmov)
3277         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3278             cpuflags="-march=$cpu"
3279             disable i686
3280         ;;
3281         # targets that do support nopl and conditional mov (cmov)
3282         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3283             cpuflags="-march=$cpu"
3284             enable i686
3285             enable fast_cmov
3286         ;;
3287         # targets that do support conditional mov but on which it's slow
3288         pentium4|pentium4m|prescott|nocona)
3289             cpuflags="-march=$cpu"
3290             enable i686
3291             disable fast_cmov
3292         ;;
3293     esac
3294
3295 fi
3296
3297 if [ "$cpu" != generic ]; then
3298     add_cflags  $cpuflags
3299     add_asflags $cpuflags
3300 fi
3301
3302 # compiler sanity check
3303 check_exec <<EOF
3304 int main(void){ return 0; }
3305 EOF
3306 if test "$?" != 0; then
3307     echo "$cc is unable to create an executable file."
3308     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3309         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3310         echo "Only do this if you know what cross compiling means."
3311     fi
3312     die "C compiler test failed."
3313 fi
3314
3315 add_cppflags -D_ISOC99_SOURCE
3316 check_cflags -std=c99
3317 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3318 #include <stdlib.h>
3319 EOF
3320 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3321 #include <stdlib.h>
3322 EOF
3323
3324 add_host_cppflags -D_ISOC99_SOURCE
3325 check_host_cflags -std=c99
3326 check_host_cflags -Wall
3327 check_host_cflags -O3
3328
3329 check_64bit(){
3330     arch32=$1
3331     arch64=$2
3332     expr=$3
3333     check_code cc "" "int test[2*($expr) - 1]" &&
3334         subarch=$arch64 || subarch=$arch32
3335 }
3336
3337 case "$arch" in
3338     aarch64|alpha|ia64)
3339         spic=$shared
3340     ;;
3341     mips)
3342         check_64bit mips mips64 '_MIPS_SIM > 1'
3343         spic=$shared
3344     ;;
3345     parisc)
3346         check_64bit parisc parisc64 'sizeof(void *) > 4'
3347         spic=$shared
3348     ;;
3349     ppc)
3350         check_64bit ppc ppc64 'sizeof(void *) > 4'
3351         spic=$shared
3352     ;;
3353     s390)
3354         check_64bit s390 s390x 'sizeof(void *) > 4'
3355         spic=$shared
3356     ;;
3357     sparc)
3358         check_64bit sparc sparc64 'sizeof(void *) > 4'
3359         spic=$shared
3360     ;;
3361     x86)
3362         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3363         if test "$subarch" = "x86_64"; then
3364             spic=$shared
3365         fi
3366     ;;
3367 esac
3368
3369 enable $subarch
3370 enabled spic && enable_weak pic
3371
3372 # OS specific
3373 case $target_os in
3374     aix)
3375         SHFLAGS=-shared
3376         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3377         enabled shared && add_ldflags -Wl,-brtl
3378         ;;
3379     android)
3380         disable symver
3381         SLIB_INSTALL_NAME='$(SLIBNAME)'
3382         SLIB_INSTALL_LINKS=
3383         # soname not set on purpose
3384         SHFLAGS=-shared
3385         ;;
3386     haiku)
3387         prefix_default="/boot/common"
3388         network_extralibs="-lnetwork"
3389         host_libs=
3390         ;;
3391     sunos)
3392         SHFLAGS='-shared -Wl,-h,$$(@F)'
3393         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3394         network_extralibs="-lsocket -lnsl"
3395         # When using suncc to build, the Solaris linker will mark
3396         # an executable with each instruction set encountered by
3397         # the Solaris assembler.  As our libraries contain their own
3398         # guards for processor-specific code, instead suppress
3399         # generation of the HWCAPS ELF section on Solaris x86 only.
3400         enabled_all suncc x86 &&
3401             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3402             add_ldflags -Wl,-M,mapfile
3403         nm_default='nm -P -g'
3404         ;;
3405     netbsd)
3406         disable symver
3407         oss_indev_extralibs="-lossaudio"
3408         oss_outdev_extralibs="-lossaudio"
3409         ;;
3410     openbsd|bitrig)
3411         disable symver
3412         SHFLAGS='-shared'
3413         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3414         SLIB_INSTALL_LINKS=
3415         oss_indev_extralibs="-lossaudio"
3416         oss_outdev_extralibs="-lossaudio"
3417         ;;
3418     dragonfly)
3419         disable symver
3420         ;;
3421     freebsd)
3422         ;;
3423     bsd/os)
3424         add_extralibs -lpoll -lgnugetopt
3425         ;;
3426     darwin)
3427         gas="gas-preprocessor.pl $cc"
3428         enabled ppc && add_asflags -force_cpusubtype_ALL
3429         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3430         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3431         add_ldflags -Wl,-dynamic,-search_paths_first
3432         SLIBSUF=".dylib"
3433         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3434         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3435         objformat="macho"
3436         enabled x86_64 && objformat="macho64"
3437         enabled_any pic shared ||
3438             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3439         ;;
3440     mingw32*)
3441         if test $target_os = "mingw32ce"; then
3442             disable network
3443         else
3444             target_os=mingw32
3445         fi
3446         LIBTARGET=i386
3447         if enabled x86_64; then
3448             LIBTARGET="i386:x86-64"
3449         elif enabled arm; then
3450             LIBTARGET=arm-wince
3451         fi
3452         check_ldflags -Wl,--nxcompat
3453         check_ldflags -Wl,--dynamicbase
3454         shlibdir_default="$bindir_default"
3455         SLIBPREF=""
3456         SLIBSUF=".dll"
3457         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3458         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3459         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3460         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3461         SLIB_INSTALL_LINKS=
3462         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3463         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3464         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3465         objformat="win32"
3466         dlltool="${cross_prefix}dlltool"
3467         ranlib=:
3468         enable dos_paths
3469         ;;
3470     win32|win64)
3471         disable symver
3472         if enabled shared; then
3473             # Link to the import library instead of the normal static library
3474             # for shared libs.
3475             LD_LIB='%.lib'
3476             # Cannot build both shared and static libs with MSVC or icl.
3477             disable static
3478         fi
3479         shlibdir_default="$bindir_default"
3480         SLIBPREF=""
3481         SLIBSUF=".dll"
3482         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3483         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3484         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3485         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3486         SLIB_INSTALL_LINKS=
3487         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3488         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3489         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3490         objformat="win32"
3491         ranlib=:
3492         enable dos_paths
3493         ;;
3494     cygwin*)
3495         target_os=cygwin
3496         shlibdir_default="$bindir_default"
3497         SLIBPREF="cyg"
3498         SLIBSUF=".dll"
3499         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3500         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3501         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3502         SLIB_INSTALL_LINKS=
3503         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3504         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3505         objformat="win32"
3506         enable dos_paths
3507         ;;
3508     *-dos|freedos|opendos)
3509         network_extralibs="-lsocket"
3510         objformat="coff"
3511         enable dos_paths
3512         add_cppflags -U__STRICT_ANSI__
3513         ;;
3514     linux)
3515         enable dv1394
3516         ;;
3517     irix*)
3518         target_os=irix
3519         ranlib="echo ignoring ranlib"
3520         ;;
3521     os/2*)
3522         ln_s="cp -f"
3523         objformat="aout"
3524         add_cppflags -D_GNU_SOURCE
3525         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3526         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3527         LIBSUF="_s.a"
3528         SLIBPREF=""
3529         SLIBSUF=".dll"
3530         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3531         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3532         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3533             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3534             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3535             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3536             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3537             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3538         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3539             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3540         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3541         enable dos_paths
3542         ;;
3543     gnu/kfreebsd)
3544         add_cppflags -D_BSD_SOURCE
3545         ;;
3546     gnu)
3547         ;;
3548     qnx)
3549         add_cppflags -D_QNX_SOURCE
3550         network_extralibs="-lsocket"
3551         ;;
3552     symbian)
3553         SLIBSUF=".dll"
3554         enable dos_paths
3555         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3556         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3557         add_ldflags -Wl,--target1-abs,--no-undefined \
3558                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3559                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3560         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3561                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3562                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3563         ;;
3564     osf1)
3565         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3566         ;;
3567     minix)
3568         ;;
3569     plan9)
3570         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3571                      -D_REENTRANT_SOURCE        \
3572                      -D_RESEARCH_SOURCE         \
3573                      -DFD_SETSIZE=96            \
3574                      -DHAVE_SOCK_OPTS
3575         add_compat strtod.o strtod=avpriv_strtod
3576         network_extralibs='-lbsd'
3577         exeobjs=compat/plan9/main.o
3578         cp_f='cp'
3579         ;;
3580     none)
3581         ;;
3582     *)
3583         die "Unknown OS '$target_os'."
3584         ;;
3585 esac
3586
3587 # determine libc flavour
3588
3589 probe_libc(){
3590     pfx=$1
3591     pfx_no_=${pfx%_}
3592     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3593     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3594         eval ${pfx}libc_type=uclibc
3595         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3596     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3597         eval ${pfx}libc_type=glibc
3598         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3599     # MinGW headers can be installed on Cygwin, so check for newlib first.
3600     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3601         eval ${pfx}libc_type=newlib
3602         add_${pfx}cppflags -U__STRICT_ANSI__
3603     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3604     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3605         eval ${pfx}libc_type=mingw64
3606         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3607         eval test \$${pfx_no_}cc_type = "gcc" &&
3608             add_${pfx}cppflags -D__printf__=__gnu_printf__
3609     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3610          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3611         eval ${pfx}libc_type=mingw32
3612         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3613             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3614             die "ERROR: MinGW32 runtime version must be >= 3.15."
3615         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3616         eval test \$${pfx_no_}cc_type = "gcc" &&
3617             add_${pfx}cppflags -D__printf__=__gnu_printf__
3618     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3619         eval ${pfx}libc_type=msvcrt
3620         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3621         # 0x601 by default unless something else is set by the user.
3622         # This can easily lead to us detecting functions only present
3623         # in such new versions and producing binaries requiring windows 7.0.
3624         # Therefore explicitly set the default to XP unless the user has
3625         # set something else on the command line.
3626         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3627             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3628     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3629         eval ${pfx}libc_type=klibc
3630     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3631         eval ${pfx}libc_type=bionic
3632     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3633         eval ${pfx}libc_type=solaris
3634         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3635     fi
3636 }
3637
3638 probe_libc
3639 test -n "$libc_type" && enable libc_$libc_type
3640 probe_libc host_
3641 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3642
3643 case $libc_type in
3644     bionic)
3645         add_compat strtod.o strtod=avpriv_strtod
3646         ;;
3647     msvcrt)
3648         add_compat strtod.o strtod=avpriv_strtod
3649         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3650                                      _snprintf=avpriv_snprintf  \
3651                                      vsnprintf=avpriv_vsnprintf
3652         ;;
3653 esac
3654
3655 # hacks for compiler/libc/os combinations
3656
3657 if enabled_all tms470 libc_glibc; then
3658     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3659     add_cppflags -D__USER_LABEL_PREFIX__=
3660     add_cppflags -D__builtin_memset=memset
3661     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3662     add_cflags   -pds=48    # incompatible redefinition of macro
3663 fi
3664
3665 if enabled_all ccc libc_glibc; then
3666     add_ldflags -Wl,-z,now  # calls to libots crash without this
3667 fi
3668
3669 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3670     add_cppflags '-I\$(SRC_PATH)/compat/float'
3671
3672 esc(){
3673     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3674 }
3675
3676 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3677
3678 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3679
3680 set_default $PATHS_LIST
3681 set_default nm
3682
3683 # we need to build at least one lib type
3684 if ! enabled_any static shared; then
3685     cat <<EOF
3686 At least one library type must be built.
3687 Specify --enable-static to build the static libraries or --enable-shared to
3688 build the shared libraries as well. To only build the shared libraries specify
3689 --disable-static in addition to --enable-shared.
3690 EOF
3691     exit 1;
3692 fi
3693
3694 die_license_disabled() {
3695     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3696 }
3697
3698 die_license_disabled gpl libcdio
3699 die_license_disabled gpl libx264
3700 die_license_disabled gpl libx265
3701 die_license_disabled gpl libxavs
3702 die_license_disabled gpl libxvid
3703 die_license_disabled gpl x11grab
3704
3705 die_license_disabled nonfree libfaac
3706 die_license_disabled nonfree libfdk_aac
3707 die_license_disabled nonfree openssl
3708
3709 die_license_disabled version3 libopencore_amrnb
3710 die_license_disabled version3 libopencore_amrwb
3711 die_license_disabled version3 libvo_aacenc
3712 die_license_disabled version3 libvo_amrwbenc
3713
3714 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3715
3716 disabled optimizations || check_cflags -fomit-frame-pointer
3717
3718 enable_weak_pic() {
3719     disabled pic && return
3720     enable pic
3721     add_cppflags -DPIC
3722     case "$target_os" in
3723     mingw*|cygwin*)
3724         ;;
3725     *)
3726         add_cflags -fPIC
3727         ;;
3728     esac
3729     add_asflags  -fPIC
3730 }
3731
3732 enabled pic && enable_weak_pic
3733
3734 check_cc <<EOF || die "Symbol mangling check failed."
3735 int ff_extern;
3736 EOF
3737 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3738 extern_prefix=${sym%%ff_extern*}
3739
3740 check_cc <<EOF && enable_weak inline_asm
3741 void foo(void) { __asm__ volatile ("" ::); }
3742 EOF
3743
3744 _restrict=
3745 for restrict_keyword in restrict __restrict__ __restrict; do
3746     check_cc <<EOF && _restrict=$restrict_keyword && break
3747 void foo(char * $restrict_keyword p);
3748 EOF
3749 done
3750
3751 check_cc <<EOF && enable pragma_deprecated
3752 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3753 EOF
3754
3755 check_cc <<EOF && enable attribute_packed
3756 struct { int x; } __attribute__((packed)) x;
3757 EOF
3758
3759 check_cc <<EOF && enable attribute_may_alias
3760 union { int x; } __attribute__((may_alias)) x;
3761 EOF
3762
3763 check_cc <<EOF || die "endian test failed"
3764 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3765 EOF
3766 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3767
3768 check_gas() {
3769     log "check_gas using '$as' as AS"
3770     # :vararg is used on aarch64, arm and ppc altivec
3771     check_as <<EOF || return 1
3772 .macro m n, y:vararg=0
3773 \n: .int \y
3774 .endm
3775 m x
3776 EOF
3777     # .altmacro is only used in arm asm
3778     ! enabled arm || check_as <<EOF || return 1
3779 .altmacro
3780 EOF
3781     enable gnu_as
3782     return 0
3783 }
3784
3785 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3786     enabled_any arm aarch64 && nogas=die
3787     enabled_all ppc altivec && nogas=warn
3788
3789     if ! check_gas ; then
3790         as=${gas:=$as}
3791         check_gas || \
3792             $nogas "GNU assembler not found, install gas-preprocessor"
3793     fi
3794
3795     check_as <<EOF && enable as_func
3796 .func test
3797 .endfunc
3798 EOF
3799 fi
3800
3801 check_inline_asm inline_asm_labels '"1:\n"'
3802
3803 if enabled aarch64; then
3804     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3805     # internal assembler in clang 3.3 does not support this instruction
3806     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3807     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3808
3809     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3810
3811 elif enabled alpha; then
3812
3813     check_cflags -mieee
3814
3815 elif enabled arm; then
3816
3817     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3818     enabled thumb && check_cflags -mthumb || check_cflags -marm
3819
3820     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3821         enable vfp_args
3822     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3823         case "${cross_prefix:-$cc}" in
3824             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3825             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3826 __asm__ (".eabi_attribute 28, 1");
3827 int main(void) { return 0; }
3828 EOF
3829         esac
3830         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3831     fi
3832
3833     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3834     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3835     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3836     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3837     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3838     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3839
3840     [ $target_os = linux ] || [ $target_os = android ] ||
3841         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3842             $ARCH_EXT_LIST_ARM
3843
3844     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3845
3846     check_as <<EOF && enable as_dn_directive
3847 ra .dn d0.i16
3848 .unreq ra
3849 EOF
3850
3851     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3852
3853 elif enabled mips; then
3854
3855     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3856
3857 elif enabled parisc; then
3858
3859     if enabled gcc; then
3860         case $($cc -dumpversion) in
3861             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3862         esac
3863     fi
3864
3865 elif enabled ppc; then
3866
3867     enable local_aligned_8 local_aligned_16
3868
3869     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3870     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3871     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3872     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3873
3874     # AltiVec flags: The FSF version of GCC differs from the Apple version
3875     if enabled altivec; then
3876         check_cflags -maltivec -mabi=altivec &&
3877         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3878         check_cflags -faltivec
3879
3880         # check if our compiler supports Motorola AltiVec C API
3881         check_cc <<EOF || disable altivec
3882 $inc_altivec_h
3883 int main(void) {
3884     vector signed int v1 = (vector signed int) { 0 };
3885     vector signed int v2 = (vector signed int) { 1 };
3886     v1 = vec_add(v1, v2);
3887     return 0;
3888 }
3889 EOF
3890
3891         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3892     fi
3893
3894 elif enabled x86; then
3895
3896     check_builtin rdtsc    intrin.h   "__rdtsc()"
3897     check_builtin mm_empty mmintrin.h "_mm_empty()"
3898
3899     enable local_aligned_8 local_aligned_16
3900
3901     # check whether EBP is available on x86
3902     # As 'i' is stored on the stack, this program will crash
3903     # if the base pointer is used to access it because the
3904     # base pointer is cleared in the inline assembly code.
3905     check_exec_crash <<EOF && enable ebp_available
3906 volatile int i=0;
3907 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3908 return i;
3909 EOF
3910
3911     # check whether EBX is available on x86
3912     check_inline_asm ebx_available '""::"b"(0)' &&
3913         check_inline_asm ebx_available '"":::"%ebx"'
3914
3915     # check whether xmm clobbers are supported
3916     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3917
3918     # check whether binutils is new enough to compile SSSE3/MMXEXT
3919     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3920     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3921
3922     if ! disabled_any asm mmx yasm; then
3923         if check_cmd $yasmexe --version; then
3924             enabled x86_64 && yasm_extra="-m amd64"
3925             yasm_debug="-g dwarf2"
3926         elif check_cmd nasm -v; then
3927             yasmexe=nasm
3928             yasm_debug="-g -F dwarf"
3929             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3930         fi
3931
3932         YASMFLAGS="-f $objformat $yasm_extra"
3933         enabled pic               && append YASMFLAGS "-DPIC"
3934         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3935         case "$objformat" in
3936             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3937         esac
3938
3939         check_yasm "movbe ecx, [5]" && enable yasm ||
3940             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3941         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3942         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3943         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3944         check_yasm "CPU amdnop" || disable cpunop
3945     fi
3946
3947     case "$cpu" in
3948         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3949             disable fast_clz
3950         ;;
3951     esac
3952
3953 fi
3954
3955 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
3956
3957 check_ldflags -Wl,--as-needed
3958
3959 if check_func dlopen; then
3960     ldl=
3961 elif check_func dlopen -ldl; then
3962     ldl=-ldl
3963 fi
3964
3965 if ! disabled network; then
3966     check_func getaddrinfo $network_extralibs
3967     check_func getservbyport $network_extralibs
3968     check_func inet_aton $network_extralibs
3969
3970     check_type netdb.h "struct addrinfo"
3971     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3972     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3973     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3974     check_type poll.h "struct pollfd"
3975     check_type netinet/sctp.h "struct sctp_event_subscribe"
3976     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3977     check_type netinet/in.h "struct sockaddr_in6"
3978     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3979     check_type "sys/types.h sys/socket.h" socklen_t
3980
3981     # Prefer arpa/inet.h over winsock2
3982     if check_header arpa/inet.h ; then
3983         check_func closesocket
3984     elif check_header winsock2.h ; then
3985         check_func_headers winsock2.h closesocket -lws2 &&
3986             network_extralibs="-lws2" ||
3987         { check_func_headers winsock2.h closesocket -lws2_32 &&
3988             network_extralibs="-lws2_32"; } || disable winsock2_h network
3989         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3990
3991         check_type ws2tcpip.h socklen_t
3992         check_type ws2tcpip.h "struct addrinfo"
3993         check_type ws2tcpip.h "struct group_source_req"
3994         check_type ws2tcpip.h "struct ip_mreq_source"
3995         check_type ws2tcpip.h "struct ipv6_mreq"
3996         check_type winsock2.h "struct pollfd"
3997         check_struct winsock2.h "struct sockaddr" sa_len
3998         check_type ws2tcpip.h "struct sockaddr_in6"
3999         check_type ws2tcpip.h "struct sockaddr_storage"
4000     else
4001         disable network
4002     fi
4003 fi
4004
4005 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4006 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4007 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4008 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4009
4010 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4011 check_func  ${malloc_prefix}memalign            && enable memalign
4012 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4013
4014 check_func  fcntl
4015 check_func  fork
4016 check_func  gethrtime
4017 check_func  getopt
4018 check_func  getrusage
4019 check_func  gettimeofday
4020 check_func  isatty
4021 check_func  localtime_r
4022 check_func  mach_absolute_time
4023 check_func  mkstemp
4024 check_func  mmap
4025 check_func  mprotect
4026 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4027 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4028 check_func  sched_getaffinity
4029 check_func  setrlimit
4030 check_func  strerror_r
4031 check_func  strptime
4032 check_func  sysconf
4033 check_func  sysctl
4034 check_func  usleep
4035
4036 check_func_headers io.h setmode
4037 check_func_headers stdlib.h getenv
4038
4039 check_func_headers windows.h CoTaskMemFree -lole32
4040 check_func_headers windows.h GetProcessAffinityMask
4041 check_func_headers windows.h GetProcessTimes
4042 check_func_headers windows.h GetSystemTimeAsFileTime
4043 check_func_headers windows.h MapViewOfFile
4044 check_func_headers windows.h SetConsoleTextAttribute
4045 check_func_headers windows.h Sleep
4046 check_func_headers windows.h VirtualAlloc
4047
4048 check_header direct.h
4049 check_header dlfcn.h
4050 check_header dxva.h
4051 check_header dxva2api.h
4052 check_header io.h
4053 check_header mach/mach_time.h
4054 check_header malloc.h
4055 check_header poll.h
4056 check_header sys/mman.h
4057 check_header sys/param.h
4058 check_header sys/resource.h
4059 check_header sys/select.h
4060 check_header sys/time.h
4061 check_header sys/un.h
4062 check_header unistd.h
4063 check_header vdpau/vdpau.h
4064 check_header vdpau/vdpau_x11.h
4065 check_header VideoDecodeAcceleration/VDADecoder.h
4066 check_header windows.h
4067 check_header X11/extensions/XvMClib.h
4068
4069 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4070 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4071 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4072
4073 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4074
4075 if ! disabled w32threads && ! enabled pthreads; then
4076     check_func_headers "windows.h process.h" _beginthreadex &&
4077         enable w32threads || disable w32threads
4078 fi
4079
4080 # check for some common methods of building with pthread support
4081 # do this before the optional library checks as some of them require pthreads
4082 if ! disabled pthreads && ! enabled w32threads; then
4083     enable pthreads
4084     if check_func pthread_join -pthread; then
4085         add_cflags -pthread
4086         add_extralibs -pthread
4087     elif check_func pthread_join -pthreads; then
4088         add_cflags -pthreads
4089         add_extralibs -pthreads
4090     elif check_func pthread_join -lpthreadGC2; then
4091         add_extralibs -lpthreadGC2
4092     elif check_lib pthread.h pthread_join -lpthread; then
4093         :
4094     elif ! check_func pthread_join; then
4095         disable pthreads
4096     fi
4097 fi
4098
4099 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4100 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4101
4102 check_lib math.h sin -lm && LIBM="-lm"
4103 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4104
4105 atan2f_args=2
4106 ldexpf_args=2
4107 powf_args=2
4108
4109 for func in $MATH_FUNCS; do
4110     eval check_mathfunc $func \${${func}_args:-1}
4111 done
4112
4113 # these are off by default, so fail if requested and not available
4114 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4115                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4116                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4117 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4118 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4119 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4120 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4121 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4122 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4123 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4124 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4125                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4126                                done || die "ERROR: libgsm not found"; }
4127 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4128 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4129 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4130 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4131 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4132 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4133                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4134 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4135 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4136 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4137 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4138 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4139 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4140 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4141 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4142 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4143 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4144 enabled libvpx            && {
4145     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4146                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4147     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4148                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4149     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4150     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4151 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4152 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4153 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4154                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4155                                die "ERROR: libx264 version must be >= 0.118."; }
4156 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4157                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4158                                die "ERROR: libx265 version must be >= 17."; }
4159 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4160 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4161 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4162                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4163                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4164                                die "ERROR: openssl not found"; }
4165
4166 if enabled gnutls; then
4167     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4168     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4169 fi
4170
4171 # libdc1394 check
4172 if enabled libdc1394; then
4173     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4174         enable libdc1394_2; } ||
4175     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4176         enable libdc1394_1; } ||
4177     die "ERROR: No version of libdc1394 found "
4178 fi
4179
4180 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4181     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4182     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4183     enable sdl
4184 fi
4185
4186 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4187 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4188
4189 check_header linux/fb.h
4190 check_header linux/videodev2.h
4191 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4192
4193 check_header sys/videoio.h
4194
4195 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4196 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4197 # w32api 3.12 had it defined wrong
4198 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4199
4200 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4201 { check_header dev/bktr/ioctl_meteor.h &&
4202   check_header dev/bktr/ioctl_bt848.h; } ||
4203 { check_header machine/ioctl_meteor.h &&
4204   check_header machine/ioctl_bt848.h; } ||
4205 { check_header dev/video/meteor/ioctl_meteor.h &&
4206   check_header dev/video/bktr/ioctl_bt848.h; } ||
4207 check_header dev/ic/bt8xx.h
4208
4209 check_header sndio.h
4210 check_header sys/soundcard.h
4211 check_header soundcard.h
4212
4213 enabled_any alsa_indev alsa_outdev &&
4214     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4215
4216 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4217     check_func jack_port_get_latency_range -ljack
4218
4219 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4220
4221 if enabled libcdio; then
4222     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4223     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4224 fi
4225
4226 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4227
4228 enabled x11grab                                           &&
4229 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4230 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4231 { enabled xlib || die "ERROR: Xlib not found"; }
4232
4233 enabled vdpau &&
4234     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4235     disable vdpau
4236
4237 enabled vdpau && enabled xlib &&
4238     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4239     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4240     enable vdpau_x11
4241
4242 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4243
4244 # add some useful compiler flags if supported
4245 check_cflags -Wdeclaration-after-statement
4246 check_cflags -Wall
4247 check_cflags -Wdisabled-optimization
4248 check_cflags -Wpointer-arith
4249 check_cflags -Wredundant-decls
4250 check_cflags -Wcast-qual
4251 check_cflags -Wwrite-strings
4252 check_cflags -Wtype-limits
4253 check_cflags -Wundef
4254 check_cflags -Wmissing-prototypes
4255 check_cflags -Wstrict-prototypes
4256 enabled extra_warnings && check_cflags -Winline
4257
4258 check_disable_warning(){
4259     warning_flag=-W${1#-Wno-}
4260     test_cflags $warning_flag && add_cflags $1
4261 }
4262
4263 check_disable_warning -Wno-parentheses
4264 check_disable_warning -Wno-switch
4265 check_disable_warning -Wno-format-zero-length
4266 check_disable_warning -Wno-pointer-sign
4267
4268 # add some linker flags
4269 check_ldflags -Wl,--warn-common
4270 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4271 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4272
4273 # add some strip flags
4274 # -wN '..@*' is more selective than -x, but not available everywhere.
4275 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4276
4277 enabled neon_clobber_test &&
4278     check_ldflags -Wl,--wrap,avcodec_open2              \
4279                   -Wl,--wrap,avcodec_decode_audio4      \
4280                   -Wl,--wrap,avcodec_decode_video2      \
4281                   -Wl,--wrap,avcodec_decode_subtitle2   \
4282                   -Wl,--wrap,avcodec_encode_audio2      \
4283                   -Wl,--wrap,avcodec_encode_video2      \
4284                   -Wl,--wrap,avcodec_encode_subtitle    \
4285                   -Wl,--wrap,avresample_convert ||
4286     disable neon_clobber_test
4287
4288 enabled xmm_clobber_test &&
4289     check_ldflags -Wl,--wrap,avcodec_open2              \
4290                   -Wl,--wrap,avcodec_decode_audio4      \
4291                   -Wl,--wrap,avcodec_decode_video2      \
4292                   -Wl,--wrap,avcodec_decode_subtitle2   \
4293                   -Wl,--wrap,avcodec_encode_audio2      \
4294                   -Wl,--wrap,avcodec_encode_video2      \
4295                   -Wl,--wrap,avcodec_encode_subtitle    \
4296                   -Wl,--wrap,avresample_convert         \
4297                   -Wl,--wrap,sws_scale ||
4298     disable xmm_clobber_test
4299
4300 echo "X{};" > $TMPV
4301 if test_ldflags -Wl,--version-script,$TMPV; then
4302     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4303     check_cc <<EOF && enable symver_asm_label
4304 void ff_foo(void) __asm__ ("av_foo@VERSION");
4305 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4306 EOF
4307     check_cc <<EOF && enable symver_gnu_asm
4308 __asm__(".symver ff_foo,av_foo@VERSION");
4309 void ff_foo(void) {}
4310 EOF
4311 fi
4312
4313 if [ -z "$optflags" ]; then
4314     if enabled small; then
4315         optflags=$cflags_size
4316     elif enabled optimizations; then
4317         optflags=$cflags_speed
4318     else
4319         optflags=$cflags_noopt
4320     fi
4321 fi
4322
4323 check_optflags(){
4324     check_cflags "$@"
4325     enabled lto && check_ldflags "$@"
4326 }
4327
4328
4329 if enabled lto; then
4330     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4331     check_cflags  -flto
4332     check_ldflags -flto $cpuflags
4333 fi
4334
4335 check_optflags $optflags
4336 check_optflags -fno-math-errno
4337 check_optflags -fno-signed-zeros
4338
4339 if enabled icc; then
4340     # Just warnings, no remarks
4341     check_cflags -w1
4342     # -wd: Disable following warnings
4343     # 144, 167, 556: -Wno-pointer-sign
4344     # 1292: attribute "foo" ignored
4345     # 1419: external declaration in primary source file
4346     # 10006: ignoring unknown option -fno-signed-zeros
4347     # 10148: ignoring unknown option -Wno-parentheses
4348     # 10156: ignoring option '-W'; no argument required
4349     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4350     # 11030: Warning unknown option --as-needed
4351     # 10156: ignoring option '-export'; no argument required
4352     check_ldflags -wd10156,11030
4353     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4354     enable ebp_available
4355     if enabled x86_32; then
4356         icc_version=$($cc -dumpversion)
4357         test ${icc_version%%.*} -ge 11 &&
4358             check_cflags -falign-stack=maintain-16-byte ||
4359             disable aligned_stack
4360     fi
4361 elif enabled ccc; then
4362     # disable some annoying warnings
4363     add_cflags -msg_disable bitnotint
4364     add_cflags -msg_disable mixfuncvoid
4365     add_cflags -msg_disable nonstandcast
4366     add_cflags -msg_disable unsupieee
4367 elif enabled gcc; then
4368     check_optflags -fno-tree-vectorize
4369     check_cflags -Werror=implicit-function-declaration
4370     check_cflags -Werror=missing-prototypes
4371     check_cflags -Werror=return-type
4372     check_cflags -Werror=declaration-after-statement
4373     check_cflags -Werror=vla
4374     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4375 elif enabled llvm_gcc; then
4376     check_cflags -mllvm -stack-alignment=16
4377 elif enabled clang; then
4378     check_cflags -mllvm -stack-alignment=16
4379     check_cflags -Qunused-arguments
4380     check_cflags -Werror=implicit-function-declaration
4381     check_cflags -Werror=missing-prototypes
4382     check_cflags -Werror=return-type
4383 elif enabled cparser; then
4384     add_cflags -Wno-missing-variable-declarations
4385     add_cflags -Wno-empty-statement
4386 elif enabled armcc; then
4387     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4388     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4389     # 2523: use of inline assembly is deprecated
4390     add_cflags -W${armcc_opt},--diag_suppress=2523
4391     add_cflags -W${armcc_opt},--diag_suppress=1207
4392     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4393     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4394     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4395     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4396 elif enabled tms470; then
4397     add_cflags -pds=824 -pds=837
4398     disable inline_asm
4399 elif enabled pathscale; then
4400     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4401 elif enabled_any msvc icl; then
4402     enabled x86_32 && disable aligned_stack
4403     enabled_all x86_32 debug && add_cflags -Oy-
4404     enabled debug && add_ldflags -debug
4405     enable pragma_deprecated
4406     if enabled icl; then
4407         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4408         # (correctly) on icl 13.x.
4409         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4410             add_cflags -Qansi-alias
4411         # icl will pass the inline asm tests but inline asm is currently
4412         # not supported (build will fail)
4413         disable inline_asm
4414     fi
4415 fi
4416
4417 case $as_type in
4418     clang)
4419         add_asflags -Qunused-arguments
4420     ;;
4421 esac
4422
4423 case $ld_type in
4424     clang)
4425         check_ldflags -Qunused-arguments
4426     ;;
4427 esac
4428
4429 case $target_os in
4430     osf1)
4431         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4432     ;;
4433     plan9)
4434         add_cppflags -Dmain=plan9_main
4435     ;;
4436 esac
4437
4438 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4439
4440 check_deps $CONFIG_LIST       \
4441            $CONFIG_EXTRA      \
4442            $HAVE_LIST         \
4443            $ALL_COMPONENTS    \
4444
4445 enabled_all dxva2 CoTaskMemFree &&
4446     prepend avconv_libs $($ldflags_filter "-lole32") &&
4447     enable dxva2_lib
4448
4449 ! enabled_any memalign posix_memalign aligned_malloc &&
4450     enabled $simd_align_16 && enable memalign_hack
4451
4452 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4453
4454 for thread in $THREADS_LIST; do
4455     if enabled $thread; then
4456         test -n "$thread_type" &&
4457             die "ERROR: Only one thread type must be selected." ||
4458             thread_type="$thread"
4459     fi
4460 done
4461
4462 enabled zlib && add_cppflags -DZLIB_CONST
4463
4464 # conditional library dependencies, in linking order
4465 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4466 enabled resample_filter && prepend avfilter_deps "avresample"
4467 enabled scale_filter    && prepend avfilter_deps "swscale"
4468
4469 enabled opus_decoder    && prepend avcodec_deps "avresample"
4470
4471 expand_deps(){
4472     lib_deps=${1}_deps
4473     eval "deps=\$$lib_deps"
4474     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4475     unique $lib_deps
4476 }
4477
4478 map 'expand_deps $v' $LIBRARY_LIST
4479
4480 echo "install prefix            $prefix"
4481 echo "source path               $source_path"
4482 echo "C compiler                $cc"
4483 echo "C library                 $libc_type"
4484 if test "$host_cc" != "$cc"; then
4485     echo "host C compiler           $host_cc"
4486     echo "host C library            $host_libc_type"
4487 fi
4488 echo "ARCH                      $arch ($cpu)"
4489 if test "$build_suffix" != ""; then
4490     echo "build suffix              $build_suffix"
4491 fi
4492 if test "$extra_version" != ""; then
4493     echo "version string suffix     $extra_version"
4494 fi
4495 echo "big-endian                ${bigendian-no}"
4496 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4497 if enabled x86; then
4498     echo "${yasmexe}                      ${yasm-no}"
4499     echo "MMX enabled               ${mmx-no}"
4500     echo "MMXEXT enabled            ${mmxext-no}"
4501     echo "3DNow! enabled            ${amd3dnow-no}"
4502     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4503     echo "SSE enabled               ${sse-no}"
4504     echo "SSSE3 enabled             ${ssse3-no}"
4505     echo "AVX enabled               ${avx-no}"
4506     echo "XOP enabled               ${xop-no}"
4507     echo "FMA3 enabled              ${fma3-no}"
4508     echo "FMA4 enabled              ${fma4-no}"
4509     echo "i686 features enabled     ${i686-no}"
4510     echo "CMOV is fast              ${fast_cmov-no}"
4511     echo "EBX available             ${ebx_available-no}"
4512     echo "EBP available             ${ebp_available-no}"
4513 fi
4514 if enabled aarch64; then
4515     echo "NEON enabled              ${neon-no}"
4516     echo "VFP enabled               ${vfp-no}"
4517 fi
4518 if enabled arm; then
4519     echo "ARMv5TE enabled           ${armv5te-no}"
4520     echo "ARMv6 enabled             ${armv6-no}"
4521     echo "ARMv6T2 enabled           ${armv6t2-no}"
4522     echo "VFP enabled               ${vfp-no}"
4523     echo "NEON enabled              ${neon-no}"
4524 fi
4525 if enabled ppc; then
4526     echo "AltiVec enabled           ${altivec-no}"
4527     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4528     echo "dcbzl available           ${dcbzl-no}"
4529 fi
4530 echo "debug symbols             ${debug-no}"
4531 echo "optimize for size         ${small-no}"
4532 echo "optimizations             ${optimizations-no}"
4533 echo "static                    ${static-no}"
4534 echo "shared                    ${shared-no}"
4535 echo "new filter support        ${avfilter-no}"
4536 echo "network support           ${network-no}"
4537 echo "threading support         ${thread_type-no}"
4538 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4539 echo "SDL support               ${sdl-no}"
4540 test -n "$random_seed" &&
4541     echo "random seed               ${random_seed}"
4542 echo
4543
4544 echo "External libraries:"
4545 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4546 echo
4547
4548 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4549     echo "Enabled ${type}s:"
4550     eval list=\$$(toupper $type)_LIST
4551     print_enabled '_*' $list | print_3_columns
4552     echo
4553 done
4554
4555 license="LGPL version 2.1 or later"
4556 if enabled nonfree; then
4557     license="nonfree and unredistributable"
4558 elif enabled gplv3; then
4559     license="GPL version 3 or later"
4560 elif enabled lgplv3; then
4561     license="LGPL version 3 or later"
4562 elif enabled gpl; then
4563     license="GPL version 2 or later"
4564 fi
4565
4566 echo "License: $license"
4567
4568 echo "Creating config.mak and config.h..."
4569
4570 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4571
4572 config_files="$TMPH config.mak"
4573
4574 cat > config.mak <<EOF
4575 # Automatically generated by configure - do not modify!
4576 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4577 prefix=$prefix
4578 LIBDIR=\$(DESTDIR)$libdir
4579 SHLIBDIR=\$(DESTDIR)$shlibdir
4580 INCDIR=\$(DESTDIR)$incdir
4581 BINDIR=\$(DESTDIR)$bindir
4582 DATADIR=\$(DESTDIR)$datadir
4583 DOCDIR=\$(DESTDIR)$docdir
4584 MANDIR=\$(DESTDIR)$mandir
4585 SRC_PATH=$source_path
4586 CC_IDENT=$cc_ident
4587 ARCH=$arch
4588 INTRINSICS=$intrinsics
4589 CC=$cc
4590 AS=$as
4591 LD=$ld
4592 DEPCC=$dep_cc
4593 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4594 DEPAS=$as
4595 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4596 YASM=$yasmexe
4597 DEPYASM=$yasmexe
4598 AR=$ar
4599 ARFLAGS=$arflags
4600 AR_O=$ar_o
4601 RANLIB=$ranlib
4602 STRIP=$strip
4603 LN_S=$ln_s
4604 CPPFLAGS=$CPPFLAGS
4605 CFLAGS=$CFLAGS
4606 ASFLAGS=$ASFLAGS
4607 AS_C=$AS_C
4608 AS_O=$AS_O
4609 CC_C=$CC_C
4610 CC_E=$CC_E
4611 CC_O=$CC_O
4612 LD_O=$LD_O
4613 LD_LIB=$LD_LIB
4614 LD_PATH=$LD_PATH
4615 DLLTOOL=$dlltool
4616 LDFLAGS=$LDFLAGS
4617 LDEXEFLAGS=$LDEXEFLAGS
4618 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4619 STRIPFLAGS=$STRIPFLAGS
4620 YASMFLAGS=$YASMFLAGS
4621 BUILDSUF=$build_suffix
4622 FULLNAME=$FULLNAME
4623 LIBPREF=$LIBPREF
4624 LIBSUF=$LIBSUF
4625 LIBNAME=$LIBNAME
4626 SLIBPREF=$SLIBPREF
4627 SLIBSUF=$SLIBSUF
4628 EXESUF=$EXESUF
4629 EXTRA_VERSION=$extra_version
4630 CCDEP=$CCDEP
4631 CCDEP_FLAGS=$CCDEP_FLAGS
4632 ASDEP=$ASDEP
4633 ASDEP_FLAGS=$ASDEP_FLAGS
4634 CC_DEPFLAGS=$CC_DEPFLAGS
4635 AS_DEPFLAGS=$AS_DEPFLAGS
4636 HOSTCC=$host_cc
4637 HOSTLD=$host_ld
4638 HOSTCFLAGS=$host_cflags
4639 HOSTCPPFLAGS=$host_cppflags
4640 HOSTEXESUF=$HOSTEXESUF
4641 HOSTLDFLAGS=$host_ldflags
4642 HOSTLIBS=$host_libs
4643 DEPHOSTCC=$host_cc
4644 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4645 HOSTCCDEP=$HOSTCCDEP
4646 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4647 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4648 HOSTCC_C=$HOSTCC_C
4649 HOSTCC_O=$HOSTCC_O
4650 HOSTLD_O=$HOSTLD_O
4651 TARGET_EXEC=$target_exec $target_exec_args
4652 TARGET_PATH=$target_path
4653 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4654 CFLAGS-avplay=$sdl_cflags
4655 ZLIB=$($ldflags_filter -lz)
4656 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4657 EXTRALIBS=$extralibs
4658 COMPAT_OBJS=$compat_objs
4659 EXEOBJS=$exeobjs
4660 INSTALL=install
4661 LIBTARGET=${LIBTARGET}
4662 SLIBNAME=${SLIBNAME}
4663 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4664 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4665 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4666 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4667 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4668 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4669 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4670 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4671 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4672 EOF
4673
4674 get_version(){
4675     lcname=lib${1}
4676     name=$(toupper $lcname)
4677     file=$source_path/$lcname/version.h
4678     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4679     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4680     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4681     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4682     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4683 }
4684
4685 map 'get_version $v' $LIBRARY_LIST
4686
4687 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4688
4689 print_program_libs(){
4690     eval "program_libs=\$${1}_libs"
4691     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4692 }
4693
4694 map 'print_program_libs $v' $PROGRAM_LIST
4695
4696 cat > $TMPH <<EOF
4697 /* Automatically generated by configure - do not modify! */
4698 #ifndef LIBAV_CONFIG_H
4699 #define LIBAV_CONFIG_H
4700 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4701 #define LIBAV_LICENSE "$(c_escape $license)"
4702 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4703 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4704 #define restrict $_restrict
4705 #define EXTERN_PREFIX "${extern_prefix}"
4706 #define EXTERN_ASM ${extern_prefix}
4707 #define SLIBSUF "$SLIBSUF"
4708 EOF
4709
4710 test -n "$malloc_prefix" &&
4711     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4712
4713 if enabled yasm; then
4714     append config_files $TMPASM
4715     printf '' >$TMPASM
4716 fi
4717
4718 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4719
4720 print_config ARCH_   "$config_files" $ARCH_LIST
4721 print_config HAVE_   "$config_files" $HAVE_LIST
4722 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4723                                      $CONFIG_EXTRA      \
4724                                      $ALL_COMPONENTS    \
4725
4726 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4727
4728 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4729 cp_if_changed $TMPH config.h
4730 touch .config
4731
4732 enabled yasm && cp_if_changed $TMPASM config.asm
4733
4734 cat > $TMPH <<EOF
4735 /* Generated by ffconf */
4736 #ifndef AVUTIL_AVCONFIG_H
4737 #define AVUTIL_AVCONFIG_H
4738 EOF
4739
4740 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4741
4742 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4743
4744 cp_if_changed $TMPH libavutil/avconfig.h
4745
4746 test -n "$WARNINGS" && printf "\n$WARNINGS"
4747
4748 # build pkg-config files
4749
4750 lib_version(){
4751     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4752 }
4753
4754 pkgconfig_generate(){
4755     name=$1
4756     shortname=${name#lib}${build_suffix}
4757     comment=$2
4758     version=$3
4759     libs=$4
4760     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4761     requires=${requires%, }
4762     enabled ${name#lib} || return 0
4763     mkdir -p $name
4764     cat <<EOF > $name/$name.pc
4765 prefix=$prefix
4766 exec_prefix=\${prefix}
4767 libdir=$libdir
4768 includedir=$incdir
4769
4770 Name: $name
4771 Description: $comment
4772 Version: $version
4773 Requires: $(enabled shared || echo $requires)
4774 Requires.private: $(enabled shared && echo $requires)
4775 Conflicts:
4776 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4777 Libs.private: $(enabled shared && echo $libs)
4778 Cflags: -I\${includedir}
4779 EOF
4780     cat <<EOF > $name/$name-uninstalled.pc
4781 prefix=
4782 exec_prefix=
4783 libdir=\${pcfiledir}
4784 includedir=${source_path}
4785
4786 Name: $name
4787 Description: $comment
4788 Version: $version
4789 Requires: $requires
4790 Conflicts:
4791 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4792 Cflags: -I\${includedir}
4793 EOF
4794 }
4795
4796 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4797 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
4798 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
4799 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
4800 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
4801 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$LIBM"
4802 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"