configure: Include the armcc build number in the compiler identification
[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 $_cc 2>&1 | grep -q Microsoft; then
2887         _type=msvc
2888         _ident=$($cc 2>&1 | head -n1)
2889         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2890         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2891         _cflags_speed="-O2"
2892         _cflags_size="-O1"
2893         if $_cc 2>&1 | grep -q Linker; then
2894             _ld_o='-out:$@'
2895         else
2896             _ld_o='-Fe$@'
2897         fi
2898         _cc_o='-Fo$@'
2899         _cc_e='-P -Fi$@'
2900         _flags_filter=msvc_flags
2901         _ld_lib='lib%.a'
2902         _ld_path='-libpath:'
2903         _flags='-nologo'
2904         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2905         if [ $pfx = hostcc ]; then
2906             append _cflags -Dsnprintf=_snprintf
2907         fi
2908     elif $_cc 2>&1 | grep -q Intel; then
2909         _type=icl
2910         _ident=$($cc 2>&1 | head -n1)
2911         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2912         # Not only is O3 broken on 13.x+ but it is slower on all previous
2913         # versions (tested) as well.
2914         _cflags_speed="-O2"
2915         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2916         if $_cc 2>&1 | grep -q Linker; then
2917             _ld_o='-out:$@'
2918         else
2919             _ld_o='-Fe$@'
2920         fi
2921         _cc_o='-Fo$@'
2922         _cc_e='-P'
2923         _flags_filter=icl_flags
2924         _ld_lib='lib%.a'
2925         _ld_path='-libpath:'
2926         # -Qdiag-error to make icl error when seeing certain unknown arguments
2927         _flags='-nologo -Qdiag-error:4044,10157'
2928         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2929         # with MSVC which enables it by default.
2930         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2931         if [ $pfx = hostcc ]; then
2932             append _cflags -Dsnprintf=_snprintf
2933         fi
2934     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2935         _type=cparser
2936         _ident=$($_cc --version | head -n1)
2937         _depflags='-MMD'
2938         _cflags_speed='-O4'
2939         _cflags_size='-O2'
2940         _flags_filter=cparser_flags
2941     fi
2942
2943     eval ${pfx}_type=\$_type
2944     eval ${pfx}_ident=\$_ident
2945 }
2946
2947 set_ccvars(){
2948     eval ${1}_C=\${_cc_c-\${${1}_C}}
2949     eval ${1}_E=\${_cc_e-\${${1}_E}}
2950     eval ${1}_O=\${_cc_o-\${${1}_O}}
2951
2952     if [ -n "$_depflags" ]; then
2953         eval ${1}_DEPFLAGS=\$_depflags
2954     else
2955         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2956         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2957         eval DEP${1}FLAGS=\$_flags
2958     fi
2959 }
2960
2961 probe_cc cc "$cc"
2962 cflags_filter=$_flags_filter
2963 cflags_speed=$_cflags_speed
2964 cflags_size=$_cflags_size
2965 cflags_noopt=$_cflags_noopt
2966 add_cflags $_flags $_cflags
2967 cc_ldflags=$_ldflags
2968 set_ccvars CC
2969
2970 probe_cc hostcc "$host_cc"
2971 host_cflags_filter=$_flags_filter
2972 add_host_cflags  $_flags $_cflags
2973 set_ccvars HOSTCC
2974
2975 test -n "$cc_type" && enable $cc_type ||
2976     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2977
2978 : ${as_default:=$cc}
2979 : ${dep_cc_default:=$cc}
2980 : ${ld_default:=$cc}
2981 : ${host_ld_default:=$host_cc}
2982 set_default ar as dep_cc ld host_ld
2983
2984 probe_cc as "$as"
2985 asflags_filter=$_flags_filter
2986 add_asflags $_flags $_cflags
2987 set_ccvars AS
2988
2989 probe_cc ld "$ld"
2990 ldflags_filter=$_flags_filter
2991 add_ldflags $_flags $_ldflags
2992 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2993 LD_O=${_ld_o-$LD_O}
2994 LD_LIB=${_ld_lib-$LD_LIB}
2995 LD_PATH=${_ld_path-$LD_PATH}
2996
2997 probe_cc hostld "$host_ld"
2998 host_ldflags_filter=$_flags_filter
2999 add_host_ldflags $_flags $_ldflags
3000 HOSTLD_O=${_ld_o-$HOSTLD_O}
3001
3002 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3003     probe_cc depcc "$dep_cc"
3004     CCDEP=${_DEPCMD:-$DEPCMD}
3005     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3006     DEPCCFLAGS=$_flags
3007 fi
3008
3009 if $ar 2>&1 | grep -q Microsoft; then
3010     arflags="-nologo"
3011     ar_o='-out:$@'
3012 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3013     arflags="rq"
3014     ar_o='$@'
3015 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3016     arflags='-Xany -r -c'
3017     ar_o='$@'
3018 else
3019     arflags="rc"
3020     ar_o='$@'
3021 fi
3022
3023 add_cflags $extra_cflags
3024 add_asflags $extra_cflags
3025
3026 if test -n "$sysroot"; then
3027     case "$cc_type" in
3028         gcc|llvm_gcc|clang)
3029             add_cppflags --sysroot="$sysroot"
3030             add_ldflags --sysroot="$sysroot"
3031         ;;
3032         tms470)
3033             add_cppflags -I"$sysinclude"
3034             add_ldflags  --sysroot="$sysroot"
3035         ;;
3036     esac
3037 fi
3038
3039 if test "$cpu" = host; then
3040     enabled cross_compile &&
3041         die "--cpu=host makes no sense when cross-compiling."
3042
3043     case "$cc_type" in
3044         gcc|llvm_gcc)
3045             check_native(){
3046                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3047                 sed -n "/cc1.*$1=/{
3048                             s/.*$1=\\([^ ]*\\).*/\\1/
3049                             p
3050                             q
3051                         }" $TMPE
3052             }
3053             cpu=$(check_native -march || check_native -mcpu)
3054         ;;
3055     esac
3056
3057     test "${cpu:-host}" = host &&
3058         die "--cpu=host not supported with compiler $cc"
3059 fi
3060
3061 # Deal with common $arch aliases
3062 case "$arch" in
3063     aarch64|arm64)
3064         arch="aarch64"
3065     ;;
3066     arm*)
3067         arch="arm"
3068     ;;
3069     mips*|IP*)
3070         arch="mips"
3071     ;;
3072     parisc*|hppa*)
3073         arch="parisc"
3074     ;;
3075     "Power Macintosh"|ppc*|powerpc*)
3076         arch="ppc"
3077     ;;
3078     s390|s390x)
3079         arch="s390"
3080     ;;
3081     sh4|sh)
3082         arch="sh4"
3083     ;;
3084     sun4u|sparc*)
3085         arch="sparc"
3086     ;;
3087     tilegx|tile-gx)
3088         arch="tilegx"
3089     ;;
3090     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3091         arch="x86"
3092     ;;
3093 esac
3094
3095 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3096 enable $arch
3097
3098 # Add processor-specific flags
3099 if enabled aarch64; then
3100
3101     case $cpu in
3102         armv*)
3103             cpuflags="-march=$cpu"
3104         ;;
3105         *)
3106             cpuflags="-mcpu=$cpu"
3107         ;;
3108     esac
3109
3110 elif enabled alpha; then
3111
3112     cpuflags="-mcpu=$cpu"
3113
3114 elif enabled arm; then
3115
3116     check_arm_arch() {
3117         check_cpp_condition stddef.h \
3118             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3119             $cpuflags
3120     }
3121
3122     probe_arm_arch() {
3123         if   check_arm_arch 4;        then echo armv4;
3124         elif check_arm_arch 4T;       then echo armv4t;
3125         elif check_arm_arch 5;        then echo armv5;
3126         elif check_arm_arch 5E;       then echo armv5e;
3127         elif check_arm_arch 5T;       then echo armv5t;
3128         elif check_arm_arch 5TE;      then echo armv5te;
3129         elif check_arm_arch 5TEJ;     then echo armv5te;
3130         elif check_arm_arch 6;        then echo armv6;
3131         elif check_arm_arch 6J;       then echo armv6j;
3132         elif check_arm_arch 6K;       then echo armv6k;
3133         elif check_arm_arch 6Z;       then echo armv6z;
3134         elif check_arm_arch 6ZK;      then echo armv6zk;
3135         elif check_arm_arch 6T2;      then echo armv6t2;
3136         elif check_arm_arch 7;        then echo armv7;
3137         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3138         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3139         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3140         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3141         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3142         fi
3143     }
3144
3145     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3146
3147     case $cpu in
3148         armv*)
3149             cpuflags="-march=$cpu"
3150             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3151         ;;
3152         *)
3153             cpuflags="-mcpu=$cpu"
3154             case $cpu in
3155                 cortex-a*)                               subarch=armv7a  ;;
3156                 cortex-r*)                               subarch=armv7r  ;;
3157                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3158                 arm11*)                                  subarch=armv6   ;;
3159                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3160                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3161                 *)                             subarch=$(probe_arm_arch) ;;
3162             esac
3163         ;;
3164     esac
3165
3166     case "$subarch" in
3167         armv5t*)    enable fast_clz                ;;
3168         armv[6-8]*) enable fast_clz fast_unaligned ;;
3169     esac
3170
3171 elif enabled avr32; then
3172
3173     case $cpu in
3174         ap7[02]0[0-2])
3175             subarch="avr32_ap"
3176             cpuflags="-mpart=$cpu"
3177         ;;
3178         ap)
3179             subarch="avr32_ap"
3180             cpuflags="-march=$cpu"
3181         ;;
3182         uc3[ab]*)
3183             subarch="avr32_uc"
3184             cpuflags="-mcpu=$cpu"
3185         ;;
3186         uc)
3187             subarch="avr32_uc"
3188             cpuflags="-march=$cpu"
3189         ;;
3190     esac
3191
3192 elif enabled bfin; then
3193
3194     cpuflags="-mcpu=$cpu"
3195
3196 elif enabled mips; then
3197
3198     cpuflags="-march=$cpu"
3199
3200 elif enabled ppc; then
3201
3202     disable ldbrx
3203
3204     case $(tolower $cpu) in
3205         601|ppc601|powerpc601)
3206             cpuflags="-mcpu=601"
3207             disable altivec
3208         ;;
3209         603*|ppc603*|powerpc603*)
3210             cpuflags="-mcpu=603"
3211             disable altivec
3212         ;;
3213         604*|ppc604*|powerpc604*)
3214             cpuflags="-mcpu=604"
3215             disable altivec
3216         ;;
3217         g3|75*|ppc75*|powerpc75*)
3218             cpuflags="-mcpu=750"
3219             disable altivec
3220         ;;
3221         g4|745*|ppc745*|powerpc745*)
3222             cpuflags="-mcpu=7450"
3223         ;;
3224         74*|ppc74*|powerpc74*)
3225             cpuflags="-mcpu=7400"
3226         ;;
3227         g5|970|ppc970|powerpc970)
3228             cpuflags="-mcpu=970"
3229         ;;
3230         power[3-7]*)
3231             cpuflags="-mcpu=$cpu"
3232         ;;
3233         cell)
3234             cpuflags="-mcpu=cell"
3235             enable ldbrx
3236         ;;
3237         e500mc)
3238             cpuflags="-mcpu=e500mc"
3239             disable altivec
3240         ;;
3241         e500v2)
3242             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3243             disable altivec
3244             disable dcbzl
3245         ;;
3246         e500)
3247             cpuflags="-mcpu=8540 -mhard-float"
3248             disable altivec
3249             disable dcbzl
3250         ;;
3251     esac
3252
3253 elif enabled sparc; then
3254
3255     case $cpu in
3256         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3257             cpuflags="-mcpu=$cpu"
3258         ;;
3259         ultrasparc*|niagara[234])
3260             cpuflags="-mcpu=$cpu"
3261         ;;
3262     esac
3263
3264 elif enabled x86; then
3265
3266     case $cpu in
3267         i[345]86|pentium)
3268             cpuflags="-march=$cpu"
3269             disable mmx
3270         ;;
3271         # targets that do NOT support nopl and conditional mov (cmov)
3272         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3273             cpuflags="-march=$cpu"
3274             disable i686
3275         ;;
3276         # targets that do support nopl and conditional mov (cmov)
3277         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3278             cpuflags="-march=$cpu"
3279             enable i686
3280             enable fast_cmov
3281         ;;
3282         # targets that do support conditional mov but on which it's slow
3283         pentium4|pentium4m|prescott|nocona)
3284             cpuflags="-march=$cpu"
3285             enable i686
3286             disable fast_cmov
3287         ;;
3288     esac
3289
3290 fi
3291
3292 if [ "$cpu" != generic ]; then
3293     add_cflags  $cpuflags
3294     add_asflags $cpuflags
3295 fi
3296
3297 # compiler sanity check
3298 check_exec <<EOF
3299 int main(void){ return 0; }
3300 EOF
3301 if test "$?" != 0; then
3302     echo "$cc is unable to create an executable file."
3303     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3304         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3305         echo "Only do this if you know what cross compiling means."
3306     fi
3307     die "C compiler test failed."
3308 fi
3309
3310 add_cppflags -D_ISOC99_SOURCE
3311 check_cflags -std=c99
3312 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3313 #include <stdlib.h>
3314 EOF
3315 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3316 #include <stdlib.h>
3317 EOF
3318
3319 add_host_cppflags -D_ISOC99_SOURCE
3320 check_host_cflags -std=c99
3321 check_host_cflags -Wall
3322 check_host_cflags -O3
3323
3324 check_64bit(){
3325     arch32=$1
3326     arch64=$2
3327     expr=$3
3328     check_code cc "" "int test[2*($expr) - 1]" &&
3329         subarch=$arch64 || subarch=$arch32
3330 }
3331
3332 case "$arch" in
3333     aarch64|alpha|ia64)
3334         spic=$shared
3335     ;;
3336     mips)
3337         check_64bit mips mips64 '_MIPS_SIM > 1'
3338         spic=$shared
3339     ;;
3340     parisc)
3341         check_64bit parisc parisc64 'sizeof(void *) > 4'
3342         spic=$shared
3343     ;;
3344     ppc)
3345         check_64bit ppc ppc64 'sizeof(void *) > 4'
3346         spic=$shared
3347     ;;
3348     s390)
3349         check_64bit s390 s390x 'sizeof(void *) > 4'
3350         spic=$shared
3351     ;;
3352     sparc)
3353         check_64bit sparc sparc64 'sizeof(void *) > 4'
3354         spic=$shared
3355     ;;
3356     x86)
3357         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3358         if test "$subarch" = "x86_64"; then
3359             spic=$shared
3360         fi
3361     ;;
3362 esac
3363
3364 enable $subarch
3365 enabled spic && enable_weak pic
3366
3367 # OS specific
3368 case $target_os in
3369     aix)
3370         SHFLAGS=-shared
3371         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3372         enabled shared && add_ldflags -Wl,-brtl
3373         ;;
3374     android)
3375         disable symver
3376         SLIB_INSTALL_NAME='$(SLIBNAME)'
3377         SLIB_INSTALL_LINKS=
3378         # soname not set on purpose
3379         SHFLAGS=-shared
3380         ;;
3381     haiku)
3382         prefix_default="/boot/common"
3383         network_extralibs="-lnetwork"
3384         host_libs=
3385         ;;
3386     sunos)
3387         SHFLAGS='-shared -Wl,-h,$$(@F)'
3388         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3389         network_extralibs="-lsocket -lnsl"
3390         # When using suncc to build, the Solaris linker will mark
3391         # an executable with each instruction set encountered by
3392         # the Solaris assembler.  As our libraries contain their own
3393         # guards for processor-specific code, instead suppress
3394         # generation of the HWCAPS ELF section on Solaris x86 only.
3395         enabled_all suncc x86 &&
3396             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3397             add_ldflags -Wl,-M,mapfile
3398         nm_default='nm -P -g'
3399         ;;
3400     netbsd)
3401         disable symver
3402         oss_indev_extralibs="-lossaudio"
3403         oss_outdev_extralibs="-lossaudio"
3404         ;;
3405     openbsd|bitrig)
3406         disable symver
3407         SHFLAGS='-shared'
3408         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3409         SLIB_INSTALL_LINKS=
3410         oss_indev_extralibs="-lossaudio"
3411         oss_outdev_extralibs="-lossaudio"
3412         ;;
3413     dragonfly)
3414         disable symver
3415         ;;
3416     freebsd)
3417         ;;
3418     bsd/os)
3419         add_extralibs -lpoll -lgnugetopt
3420         ;;
3421     darwin)
3422         gas="gas-preprocessor.pl $cc"
3423         enabled ppc && add_asflags -force_cpusubtype_ALL
3424         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3425         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3426         add_ldflags -Wl,-dynamic,-search_paths_first
3427         SLIBSUF=".dylib"
3428         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3429         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3430         objformat="macho"
3431         enabled x86_64 && objformat="macho64"
3432         enabled_any pic shared ||
3433             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3434         ;;
3435     mingw32*)
3436         if test $target_os = "mingw32ce"; then
3437             disable network
3438         else
3439             target_os=mingw32
3440         fi
3441         LIBTARGET=i386
3442         if enabled x86_64; then
3443             LIBTARGET="i386:x86-64"
3444         elif enabled arm; then
3445             LIBTARGET=arm-wince
3446         fi
3447         check_ldflags -Wl,--nxcompat
3448         check_ldflags -Wl,--dynamicbase
3449         shlibdir_default="$bindir_default"
3450         SLIBPREF=""
3451         SLIBSUF=".dll"
3452         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3453         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3454         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3455         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3456         SLIB_INSTALL_LINKS=
3457         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3458         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3459         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3460         objformat="win32"
3461         dlltool="${cross_prefix}dlltool"
3462         ranlib=:
3463         enable dos_paths
3464         ;;
3465     win32|win64)
3466         disable symver
3467         if enabled shared; then
3468             # Link to the import library instead of the normal static library
3469             # for shared libs.
3470             LD_LIB='%.lib'
3471             # Cannot build both shared and static libs with MSVC or icl.
3472             disable static
3473         fi
3474         shlibdir_default="$bindir_default"
3475         SLIBPREF=""
3476         SLIBSUF=".dll"
3477         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3478         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3479         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3480         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3481         SLIB_INSTALL_LINKS=
3482         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3483         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3484         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3485         objformat="win32"
3486         ranlib=:
3487         enable dos_paths
3488         ;;
3489     cygwin*)
3490         target_os=cygwin
3491         shlibdir_default="$bindir_default"
3492         SLIBPREF="cyg"
3493         SLIBSUF=".dll"
3494         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3495         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3496         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3497         SLIB_INSTALL_LINKS=
3498         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3499         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3500         objformat="win32"
3501         enable dos_paths
3502         ;;
3503     *-dos|freedos|opendos)
3504         network_extralibs="-lsocket"
3505         objformat="coff"
3506         enable dos_paths
3507         add_cppflags -U__STRICT_ANSI__
3508         ;;
3509     linux)
3510         enable dv1394
3511         ;;
3512     irix*)
3513         target_os=irix
3514         ranlib="echo ignoring ranlib"
3515         ;;
3516     os/2*)
3517         ln_s="cp -f"
3518         objformat="aout"
3519         add_cppflags -D_GNU_SOURCE
3520         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3521         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3522         LIBSUF="_s.a"
3523         SLIBPREF=""
3524         SLIBSUF=".dll"
3525         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3526         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3527         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3528             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3529             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3530             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3531             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3532             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3533         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3534             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3535         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3536         enable dos_paths
3537         ;;
3538     gnu/kfreebsd)
3539         add_cppflags -D_BSD_SOURCE
3540         ;;
3541     gnu)
3542         ;;
3543     qnx)
3544         add_cppflags -D_QNX_SOURCE
3545         network_extralibs="-lsocket"
3546         ;;
3547     symbian)
3548         SLIBSUF=".dll"
3549         enable dos_paths
3550         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3551         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3552         add_ldflags -Wl,--target1-abs,--no-undefined \
3553                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3554                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3555         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3556                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3557                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3558         ;;
3559     osf1)
3560         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3561         ;;
3562     minix)
3563         ;;
3564     plan9)
3565         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3566                      -D_REENTRANT_SOURCE        \
3567                      -D_RESEARCH_SOURCE         \
3568                      -DFD_SETSIZE=96            \
3569                      -DHAVE_SOCK_OPTS
3570         add_compat strtod.o strtod=avpriv_strtod
3571         network_extralibs='-lbsd'
3572         exeobjs=compat/plan9/main.o
3573         cp_f='cp'
3574         ;;
3575     none)
3576         ;;
3577     *)
3578         die "Unknown OS '$target_os'."
3579         ;;
3580 esac
3581
3582 # determine libc flavour
3583
3584 probe_libc(){
3585     pfx=$1
3586     pfx_no_=${pfx%_}
3587     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3588     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3589         eval ${pfx}libc_type=uclibc
3590         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3591     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3592         eval ${pfx}libc_type=glibc
3593         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3594     # MinGW headers can be installed on Cygwin, so check for newlib first.
3595     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3596         eval ${pfx}libc_type=newlib
3597         add_${pfx}cppflags -U__STRICT_ANSI__
3598     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3599     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3600         eval ${pfx}libc_type=mingw64
3601         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3602         eval test \$${pfx_no_}cc_type = "gcc" &&
3603             add_${pfx}cppflags -D__printf__=__gnu_printf__
3604     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3605          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3606         eval ${pfx}libc_type=mingw32
3607         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3608             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3609             die "ERROR: MinGW32 runtime version must be >= 3.15."
3610         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3611         eval test \$${pfx_no_}cc_type = "gcc" &&
3612             add_${pfx}cppflags -D__printf__=__gnu_printf__
3613     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3614         eval ${pfx}libc_type=msvcrt
3615         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3616         # 0x601 by default unless something else is set by the user.
3617         # This can easily lead to us detecting functions only present
3618         # in such new versions and producing binaries requiring windows 7.0.
3619         # Therefore explicitly set the default to XP unless the user has
3620         # set something else on the command line.
3621         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3622             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3623     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3624         eval ${pfx}libc_type=klibc
3625     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3626         eval ${pfx}libc_type=bionic
3627     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3628         eval ${pfx}libc_type=solaris
3629         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3630     fi
3631 }
3632
3633 probe_libc
3634 test -n "$libc_type" && enable libc_$libc_type
3635 probe_libc host_
3636 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3637
3638 case $libc_type in
3639     bionic)
3640         add_compat strtod.o strtod=avpriv_strtod
3641         ;;
3642     msvcrt)
3643         add_compat strtod.o strtod=avpriv_strtod
3644         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3645                                      _snprintf=avpriv_snprintf  \
3646                                      vsnprintf=avpriv_vsnprintf
3647         ;;
3648 esac
3649
3650 # hacks for compiler/libc/os combinations
3651
3652 if enabled_all tms470 libc_glibc; then
3653     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3654     add_cppflags -D__USER_LABEL_PREFIX__=
3655     add_cppflags -D__builtin_memset=memset
3656     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3657     add_cflags   -pds=48    # incompatible redefinition of macro
3658 fi
3659
3660 if enabled_all ccc libc_glibc; then
3661     add_ldflags -Wl,-z,now  # calls to libots crash without this
3662 fi
3663
3664 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3665     add_cppflags '-I\$(SRC_PATH)/compat/float'
3666
3667 esc(){
3668     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3669 }
3670
3671 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3672
3673 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3674
3675 set_default $PATHS_LIST
3676 set_default nm
3677
3678 # we need to build at least one lib type
3679 if ! enabled_any static shared; then
3680     cat <<EOF
3681 At least one library type must be built.
3682 Specify --enable-static to build the static libraries or --enable-shared to
3683 build the shared libraries as well. To only build the shared libraries specify
3684 --disable-static in addition to --enable-shared.
3685 EOF
3686     exit 1;
3687 fi
3688
3689 die_license_disabled() {
3690     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3691 }
3692
3693 die_license_disabled gpl libcdio
3694 die_license_disabled gpl libx264
3695 die_license_disabled gpl libx265
3696 die_license_disabled gpl libxavs
3697 die_license_disabled gpl libxvid
3698 die_license_disabled gpl x11grab
3699
3700 die_license_disabled nonfree libfaac
3701 die_license_disabled nonfree libfdk_aac
3702 die_license_disabled nonfree openssl
3703
3704 die_license_disabled version3 libopencore_amrnb
3705 die_license_disabled version3 libopencore_amrwb
3706 die_license_disabled version3 libvo_aacenc
3707 die_license_disabled version3 libvo_amrwbenc
3708
3709 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3710
3711 disabled optimizations || check_cflags -fomit-frame-pointer
3712
3713 enable_weak_pic() {
3714     disabled pic && return
3715     enable pic
3716     add_cppflags -DPIC
3717     case "$target_os" in
3718     mingw*|cygwin*)
3719         ;;
3720     *)
3721         add_cflags -fPIC
3722         ;;
3723     esac
3724     add_asflags  -fPIC
3725 }
3726
3727 enabled pic && enable_weak_pic
3728
3729 check_cc <<EOF || die "Symbol mangling check failed."
3730 int ff_extern;
3731 EOF
3732 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3733 extern_prefix=${sym%%ff_extern*}
3734
3735 check_cc <<EOF && enable_weak inline_asm
3736 void foo(void) { __asm__ volatile ("" ::); }
3737 EOF
3738
3739 _restrict=
3740 for restrict_keyword in restrict __restrict__ __restrict; do
3741     check_cc <<EOF && _restrict=$restrict_keyword && break
3742 void foo(char * $restrict_keyword p);
3743 EOF
3744 done
3745
3746 check_cc <<EOF && enable pragma_deprecated
3747 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3748 EOF
3749
3750 check_cc <<EOF && enable attribute_packed
3751 struct { int x; } __attribute__((packed)) x;
3752 EOF
3753
3754 check_cc <<EOF && enable attribute_may_alias
3755 union { int x; } __attribute__((may_alias)) x;
3756 EOF
3757
3758 check_cc <<EOF || die "endian test failed"
3759 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3760 EOF
3761 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3762
3763 check_gas() {
3764     log "check_gas using '$as' as AS"
3765     # :vararg is used on aarch64, arm and ppc altivec
3766     check_as <<EOF || return 1
3767 .macro m n, y:vararg=0
3768 \n: .int \y
3769 .endm
3770 m x
3771 EOF
3772     # .altmacro is only used in arm asm
3773     ! enabled arm || check_as <<EOF || return 1
3774 .altmacro
3775 EOF
3776     enable gnu_as
3777     return 0
3778 }
3779
3780 if enabled asm; then
3781     enabled     arm aarch64 && nogas=die
3782     enabled_all ppc altivec && nogas=warn
3783
3784     if ! check_gas ; then
3785         as=${gas:=$as}
3786         check_gas || \
3787             $nogas "GNU assembler not found, install gas-preprocessor"
3788     fi
3789
3790     check_as <<EOF && enable as_func
3791 .func test
3792 .endfunc
3793 EOF
3794 fi
3795
3796 check_inline_asm inline_asm_labels '"1:\n"'
3797
3798 if enabled aarch64; then
3799     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3800     # internal assembler in clang 3.3 does not support this instruction
3801     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3802     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3803
3804     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3805
3806 elif enabled alpha; then
3807
3808     check_cflags -mieee
3809
3810 elif enabled arm; then
3811
3812     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3813     enabled thumb && check_cflags -mthumb || check_cflags -marm
3814
3815     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3816         enable vfp_args
3817     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3818         case "${cross_prefix:-$cc}" in
3819             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3820             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3821 __asm__ (".eabi_attribute 28, 1");
3822 int main(void) { return 0; }
3823 EOF
3824         esac
3825         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3826     fi
3827
3828     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3829     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3830     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3831     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3832     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3833     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3834
3835     [ $target_os = linux ] || [ $target_os = android ] ||
3836         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3837             $ARCH_EXT_LIST_ARM
3838
3839     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3840
3841     check_as <<EOF && enable as_dn_directive
3842 ra .dn d0.i16
3843 .unreq ra
3844 EOF
3845
3846     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3847
3848 elif enabled mips; then
3849
3850     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3851
3852 elif enabled parisc; then
3853
3854     if enabled gcc; then
3855         case $($cc -dumpversion) in
3856             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3857         esac
3858     fi
3859
3860 elif enabled ppc; then
3861
3862     enable local_aligned_8 local_aligned_16
3863
3864     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3865     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3866     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3867     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3868
3869     # AltiVec flags: The FSF version of GCC differs from the Apple version
3870     if enabled altivec; then
3871         check_cflags -maltivec -mabi=altivec &&
3872         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3873         check_cflags -faltivec
3874
3875         # check if our compiler supports Motorola AltiVec C API
3876         check_cc <<EOF || disable altivec
3877 $inc_altivec_h
3878 int main(void) {
3879     vector signed int v1 = (vector signed int) { 0 };
3880     vector signed int v2 = (vector signed int) { 1 };
3881     v1 = vec_add(v1, v2);
3882     return 0;
3883 }
3884 EOF
3885
3886         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3887     fi
3888
3889 elif enabled x86; then
3890
3891     check_builtin rdtsc    intrin.h   "__rdtsc()"
3892     check_builtin mm_empty mmintrin.h "_mm_empty()"
3893
3894     enable local_aligned_8 local_aligned_16
3895
3896     # check whether EBP is available on x86
3897     # As 'i' is stored on the stack, this program will crash
3898     # if the base pointer is used to access it because the
3899     # base pointer is cleared in the inline assembly code.
3900     check_exec_crash <<EOF && enable ebp_available
3901 volatile int i=0;
3902 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3903 return i;
3904 EOF
3905
3906     # check whether EBX is available on x86
3907     check_inline_asm ebx_available '""::"b"(0)' &&
3908         check_inline_asm ebx_available '"":::"%ebx"'
3909
3910     # check whether xmm clobbers are supported
3911     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3912
3913     # check whether binutils is new enough to compile SSSE3/MMXEXT
3914     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3915     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3916
3917     if ! disabled_any asm mmx yasm; then
3918         if check_cmd $yasmexe --version; then
3919             enabled x86_64 && yasm_extra="-m amd64"
3920             yasm_debug="-g dwarf2"
3921         elif check_cmd nasm -v; then
3922             yasmexe=nasm
3923             yasm_debug="-g -F dwarf"
3924             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3925         fi
3926
3927         YASMFLAGS="-f $objformat $yasm_extra"
3928         enabled pic               && append YASMFLAGS "-DPIC"
3929         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3930         case "$objformat" in
3931             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3932         esac
3933
3934         check_yasm "movbe ecx, [5]" && enable yasm ||
3935             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3936         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3937         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3938         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3939         check_yasm "CPU amdnop" || disable cpunop
3940     fi
3941
3942     case "$cpu" in
3943         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3944             disable fast_clz
3945         ;;
3946     esac
3947
3948 fi
3949
3950 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
3951
3952 check_ldflags -Wl,--as-needed
3953
3954 if check_func dlopen; then
3955     ldl=
3956 elif check_func dlopen -ldl; then
3957     ldl=-ldl
3958 fi
3959
3960 if ! disabled network; then
3961     check_func getaddrinfo $network_extralibs
3962     check_func getservbyport $network_extralibs
3963     check_func inet_aton $network_extralibs
3964
3965     check_type netdb.h "struct addrinfo"
3966     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3967     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3968     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3969     check_type poll.h "struct pollfd"
3970     check_type netinet/sctp.h "struct sctp_event_subscribe"
3971     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3972     check_type netinet/in.h "struct sockaddr_in6"
3973     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3974     check_type "sys/types.h sys/socket.h" socklen_t
3975
3976     # Prefer arpa/inet.h over winsock2
3977     if check_header arpa/inet.h ; then
3978         check_func closesocket
3979     elif check_header winsock2.h ; then
3980         check_func_headers winsock2.h closesocket -lws2 &&
3981             network_extralibs="-lws2" ||
3982         { check_func_headers winsock2.h closesocket -lws2_32 &&
3983             network_extralibs="-lws2_32"; } || disable winsock2_h network
3984         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3985
3986         check_type ws2tcpip.h socklen_t
3987         check_type ws2tcpip.h "struct addrinfo"
3988         check_type ws2tcpip.h "struct group_source_req"
3989         check_type ws2tcpip.h "struct ip_mreq_source"
3990         check_type ws2tcpip.h "struct ipv6_mreq"
3991         check_type winsock2.h "struct pollfd"
3992         check_struct winsock2.h "struct sockaddr" sa_len
3993         check_type ws2tcpip.h "struct sockaddr_in6"
3994         check_type ws2tcpip.h "struct sockaddr_storage"
3995     else
3996         disable network
3997     fi
3998 fi
3999
4000 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4001 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4002 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4003 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4004
4005 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4006 check_func  ${malloc_prefix}memalign            && enable memalign
4007 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4008
4009 check_func  fcntl
4010 check_func  fork
4011 check_func  gethrtime
4012 check_func  getopt
4013 check_func  getrusage
4014 check_func  gettimeofday
4015 check_func  isatty
4016 check_func  localtime_r
4017 check_func  mach_absolute_time
4018 check_func  mkstemp
4019 check_func  mmap
4020 check_func  mprotect
4021 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4022 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4023 check_func  sched_getaffinity
4024 check_func  setrlimit
4025 check_func  strerror_r
4026 check_func  strptime
4027 check_func  sysconf
4028 check_func  sysctl
4029 check_func  usleep
4030
4031 check_func_headers io.h setmode
4032 check_func_headers stdlib.h getenv
4033
4034 check_func_headers windows.h CoTaskMemFree -lole32
4035 check_func_headers windows.h GetProcessAffinityMask
4036 check_func_headers windows.h GetProcessTimes
4037 check_func_headers windows.h GetSystemTimeAsFileTime
4038 check_func_headers windows.h MapViewOfFile
4039 check_func_headers windows.h SetConsoleTextAttribute
4040 check_func_headers windows.h Sleep
4041 check_func_headers windows.h VirtualAlloc
4042
4043 check_header direct.h
4044 check_header dlfcn.h
4045 check_header dxva.h
4046 check_header dxva2api.h
4047 check_header io.h
4048 check_header mach/mach_time.h
4049 check_header malloc.h
4050 check_header poll.h
4051 check_header sys/mman.h
4052 check_header sys/param.h
4053 check_header sys/resource.h
4054 check_header sys/select.h
4055 check_header sys/time.h
4056 check_header sys/un.h
4057 check_header unistd.h
4058 check_header vdpau/vdpau.h
4059 check_header vdpau/vdpau_x11.h
4060 check_header VideoDecodeAcceleration/VDADecoder.h
4061 check_header windows.h
4062 check_header X11/extensions/XvMClib.h
4063
4064 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4065 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4066 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4067
4068 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4069
4070 if ! disabled w32threads && ! enabled pthreads; then
4071     check_func_headers "windows.h process.h" _beginthreadex &&
4072         enable w32threads || disable w32threads
4073 fi
4074
4075 # check for some common methods of building with pthread support
4076 # do this before the optional library checks as some of them require pthreads
4077 if ! disabled pthreads && ! enabled w32threads; then
4078     enable pthreads
4079     if check_func pthread_join -pthread; then
4080         add_cflags -pthread
4081         add_extralibs -pthread
4082     elif check_func pthread_join -pthreads; then
4083         add_cflags -pthreads
4084         add_extralibs -pthreads
4085     elif check_func pthread_join -lpthreadGC2; then
4086         add_extralibs -lpthreadGC2
4087     elif check_lib pthread.h pthread_join -lpthread; then
4088         :
4089     elif ! check_func pthread_join; then
4090         disable pthreads
4091     fi
4092 fi
4093
4094 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4095 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4096
4097 check_lib math.h sin -lm && LIBM="-lm"
4098 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4099
4100 atan2f_args=2
4101 ldexpf_args=2
4102 powf_args=2
4103
4104 for func in $MATH_FUNCS; do
4105     eval check_mathfunc $func \${${func}_args:-1}
4106 done
4107
4108 # these are off by default, so fail if requested and not available
4109 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4110                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4111                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4112 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4113 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4114 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4115 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4116 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4117 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4118 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4119 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4120                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4121                                done || die "ERROR: libgsm not found"; }
4122 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4123 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4124 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4125 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4126 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4127 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4128                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4129 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4130 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4131 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4132 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4133 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4134 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4135 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4136 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4137 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4138 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4139 enabled libvpx            && {
4140     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4141                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4142     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4143                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4144     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4145     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4146 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4147 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4148 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4149                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4150                                die "ERROR: libx264 version must be >= 0.118."; }
4151 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4152                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4153                                die "ERROR: libx265 version must be >= 17."; }
4154 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4155 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4156 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4157                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4158                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4159                                die "ERROR: openssl not found"; }
4160
4161 if enabled gnutls; then
4162     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4163     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4164 fi
4165
4166 # libdc1394 check
4167 if enabled libdc1394; then
4168     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4169         enable libdc1394_2; } ||
4170     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4171         enable libdc1394_1; } ||
4172     die "ERROR: No version of libdc1394 found "
4173 fi
4174
4175 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4176     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4177     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4178     enable sdl
4179 fi
4180
4181 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4182 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4183
4184 check_header linux/fb.h
4185 check_header linux/videodev2.h
4186 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4187
4188 check_header sys/videoio.h
4189
4190 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4191 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4192 # w32api 3.12 had it defined wrong
4193 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4194
4195 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4196 { check_header dev/bktr/ioctl_meteor.h &&
4197   check_header dev/bktr/ioctl_bt848.h; } ||
4198 { check_header machine/ioctl_meteor.h &&
4199   check_header machine/ioctl_bt848.h; } ||
4200 { check_header dev/video/meteor/ioctl_meteor.h &&
4201   check_header dev/video/bktr/ioctl_bt848.h; } ||
4202 check_header dev/ic/bt8xx.h
4203
4204 check_header sndio.h
4205 check_header sys/soundcard.h
4206 check_header soundcard.h
4207
4208 enabled_any alsa_indev alsa_outdev &&
4209     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4210
4211 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4212     check_func jack_port_get_latency_range -ljack
4213
4214 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4215
4216 if enabled libcdio; then
4217     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4218     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4219 fi
4220
4221 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4222
4223 enabled x11grab                                           &&
4224 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4225 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4226 { enabled xlib || die "ERROR: Xlib not found"; }
4227
4228 enabled vdpau &&
4229     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4230     disable vdpau
4231
4232 enabled vdpau && enabled xlib &&
4233     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4234     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4235     enable vdpau_x11
4236
4237 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4238
4239 # add some useful compiler flags if supported
4240 check_cflags -Wdeclaration-after-statement
4241 check_cflags -Wall
4242 check_cflags -Wdisabled-optimization
4243 check_cflags -Wpointer-arith
4244 check_cflags -Wredundant-decls
4245 check_cflags -Wcast-qual
4246 check_cflags -Wwrite-strings
4247 check_cflags -Wtype-limits
4248 check_cflags -Wundef
4249 check_cflags -Wmissing-prototypes
4250 check_cflags -Wstrict-prototypes
4251 enabled extra_warnings && check_cflags -Winline
4252
4253 check_disable_warning(){
4254     warning_flag=-W${1#-Wno-}
4255     test_cflags $warning_flag && add_cflags $1
4256 }
4257
4258 check_disable_warning -Wno-parentheses
4259 check_disable_warning -Wno-switch
4260 check_disable_warning -Wno-format-zero-length
4261 check_disable_warning -Wno-pointer-sign
4262
4263 # add some linker flags
4264 check_ldflags -Wl,--warn-common
4265 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4266 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4267
4268 # add some strip flags
4269 # -wN '..@*' is more selective than -x, but not available everywhere.
4270 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4271
4272 enabled neon_clobber_test &&
4273     check_ldflags -Wl,--wrap,avcodec_open2              \
4274                   -Wl,--wrap,avcodec_decode_audio4      \
4275                   -Wl,--wrap,avcodec_decode_video2      \
4276                   -Wl,--wrap,avcodec_decode_subtitle2   \
4277                   -Wl,--wrap,avcodec_encode_audio2      \
4278                   -Wl,--wrap,avcodec_encode_video2      \
4279                   -Wl,--wrap,avcodec_encode_subtitle    \
4280                   -Wl,--wrap,avresample_convert ||
4281     disable neon_clobber_test
4282
4283 enabled xmm_clobber_test &&
4284     check_ldflags -Wl,--wrap,avcodec_open2              \
4285                   -Wl,--wrap,avcodec_decode_audio4      \
4286                   -Wl,--wrap,avcodec_decode_video2      \
4287                   -Wl,--wrap,avcodec_decode_subtitle2   \
4288                   -Wl,--wrap,avcodec_encode_audio2      \
4289                   -Wl,--wrap,avcodec_encode_video2      \
4290                   -Wl,--wrap,avcodec_encode_subtitle    \
4291                   -Wl,--wrap,avresample_convert         \
4292                   -Wl,--wrap,sws_scale ||
4293     disable xmm_clobber_test
4294
4295 echo "X{};" > $TMPV
4296 if test_ldflags -Wl,--version-script,$TMPV; then
4297     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4298     check_cc <<EOF && enable symver_asm_label
4299 void ff_foo(void) __asm__ ("av_foo@VERSION");
4300 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4301 EOF
4302     check_cc <<EOF && enable symver_gnu_asm
4303 __asm__(".symver ff_foo,av_foo@VERSION");
4304 void ff_foo(void) {}
4305 EOF
4306 fi
4307
4308 if [ -z "$optflags" ]; then
4309     if enabled small; then
4310         optflags=$cflags_size
4311     elif enabled optimizations; then
4312         optflags=$cflags_speed
4313     else
4314         optflags=$cflags_noopt
4315     fi
4316 fi
4317
4318 check_optflags(){
4319     check_cflags "$@"
4320     enabled lto && check_ldflags "$@"
4321 }
4322
4323
4324 if enabled lto; then
4325     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4326     check_cflags  -flto
4327     check_ldflags -flto $cpuflags
4328 fi
4329
4330 check_optflags $optflags
4331 check_optflags -fno-math-errno
4332 check_optflags -fno-signed-zeros
4333
4334 if enabled icc; then
4335     # Just warnings, no remarks
4336     check_cflags -w1
4337     # -wd: Disable following warnings
4338     # 144, 167, 556: -Wno-pointer-sign
4339     # 1292: attribute "foo" ignored
4340     # 1419: external declaration in primary source file
4341     # 10006: ignoring unknown option -fno-signed-zeros
4342     # 10148: ignoring unknown option -Wno-parentheses
4343     # 10156: ignoring option '-W'; no argument required
4344     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4345     # 11030: Warning unknown option --as-needed
4346     # 10156: ignoring option '-export'; no argument required
4347     check_ldflags -wd10156,11030
4348     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4349     enable ebp_available
4350     if enabled x86_32; then
4351         icc_version=$($cc -dumpversion)
4352         test ${icc_version%%.*} -ge 11 &&
4353             check_cflags -falign-stack=maintain-16-byte ||
4354             disable aligned_stack
4355     fi
4356 elif enabled ccc; then
4357     # disable some annoying warnings
4358     add_cflags -msg_disable bitnotint
4359     add_cflags -msg_disable mixfuncvoid
4360     add_cflags -msg_disable nonstandcast
4361     add_cflags -msg_disable unsupieee
4362 elif enabled gcc; then
4363     check_optflags -fno-tree-vectorize
4364     check_cflags -Werror=implicit-function-declaration
4365     check_cflags -Werror=missing-prototypes
4366     check_cflags -Werror=return-type
4367     check_cflags -Werror=declaration-after-statement
4368     check_cflags -Werror=vla
4369     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4370 elif enabled llvm_gcc; then
4371     check_cflags -mllvm -stack-alignment=16
4372 elif enabled clang; then
4373     check_cflags -mllvm -stack-alignment=16
4374     check_cflags -Qunused-arguments
4375     check_cflags -Werror=implicit-function-declaration
4376     check_cflags -Werror=missing-prototypes
4377     check_cflags -Werror=return-type
4378 elif enabled cparser; then
4379     add_cflags -Wno-missing-variable-declarations
4380     add_cflags -Wno-empty-statement
4381 elif enabled armcc; then
4382     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4383     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4384     # 2523: use of inline assembly is deprecated
4385     add_cflags -W${armcc_opt},--diag_suppress=2523
4386     add_cflags -W${armcc_opt},--diag_suppress=1207
4387     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4388     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4389     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4390     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4391 elif enabled tms470; then
4392     add_cflags -pds=824 -pds=837
4393     disable inline_asm
4394 elif enabled pathscale; then
4395     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4396 elif enabled_any msvc icl; then
4397     enabled x86_32 && disable aligned_stack
4398     enabled_all x86_32 debug && add_cflags -Oy-
4399     enabled debug && add_ldflags -debug
4400     enable pragma_deprecated
4401     if enabled icl; then
4402         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4403         # (correctly) on icl 13.x.
4404         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4405             add_cflags -Qansi-alias
4406         # icl will pass the inline asm tests but inline asm is currently
4407         # not supported (build will fail)
4408         disable inline_asm
4409     fi
4410 fi
4411
4412 case $as_type in
4413     clang)
4414         add_asflags -Qunused-arguments
4415     ;;
4416 esac
4417
4418 case $ld_type in
4419     clang)
4420         check_ldflags -Qunused-arguments
4421     ;;
4422 esac
4423
4424 case $target_os in
4425     osf1)
4426         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4427     ;;
4428     plan9)
4429         add_cppflags -Dmain=plan9_main
4430     ;;
4431 esac
4432
4433 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4434
4435 check_deps $CONFIG_LIST       \
4436            $CONFIG_EXTRA      \
4437            $HAVE_LIST         \
4438            $ALL_COMPONENTS    \
4439
4440 enabled_all dxva2 CoTaskMemFree &&
4441     prepend avconv_libs $($ldflags_filter "-lole32") &&
4442     enable dxva2_lib
4443
4444 ! enabled_any memalign posix_memalign aligned_malloc &&
4445     enabled $simd_align_16 && enable memalign_hack
4446
4447 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4448
4449 for thread in $THREADS_LIST; do
4450     if enabled $thread; then
4451         test -n "$thread_type" &&
4452             die "ERROR: Only one thread type must be selected." ||
4453             thread_type="$thread"
4454     fi
4455 done
4456
4457 enabled zlib && add_cppflags -DZLIB_CONST
4458
4459 # conditional library dependencies, in linking order
4460 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4461 enabled resample_filter && prepend avfilter_deps "avresample"
4462 enabled scale_filter    && prepend avfilter_deps "swscale"
4463
4464 enabled opus_decoder    && prepend avcodec_deps "avresample"
4465
4466 expand_deps(){
4467     lib_deps=${1}_deps
4468     eval "deps=\$$lib_deps"
4469     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4470     unique $lib_deps
4471 }
4472
4473 map 'expand_deps $v' $LIBRARY_LIST
4474
4475 echo "install prefix            $prefix"
4476 echo "source path               $source_path"
4477 echo "C compiler                $cc"
4478 echo "C library                 $libc_type"
4479 if test "$host_cc" != "$cc"; then
4480     echo "host C compiler           $host_cc"
4481     echo "host C library            $host_libc_type"
4482 fi
4483 echo "ARCH                      $arch ($cpu)"
4484 if test "$build_suffix" != ""; then
4485     echo "build suffix              $build_suffix"
4486 fi
4487 if test "$extra_version" != ""; then
4488     echo "version string suffix     $extra_version"
4489 fi
4490 echo "big-endian                ${bigendian-no}"
4491 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4492 if enabled x86; then
4493     echo "${yasmexe}                      ${yasm-no}"
4494     echo "MMX enabled               ${mmx-no}"
4495     echo "MMXEXT enabled            ${mmxext-no}"
4496     echo "3DNow! enabled            ${amd3dnow-no}"
4497     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4498     echo "SSE enabled               ${sse-no}"
4499     echo "SSSE3 enabled             ${ssse3-no}"
4500     echo "AVX enabled               ${avx-no}"
4501     echo "XOP enabled               ${xop-no}"
4502     echo "FMA3 enabled              ${fma3-no}"
4503     echo "FMA4 enabled              ${fma4-no}"
4504     echo "i686 features enabled     ${i686-no}"
4505     echo "CMOV is fast              ${fast_cmov-no}"
4506     echo "EBX available             ${ebx_available-no}"
4507     echo "EBP available             ${ebp_available-no}"
4508 fi
4509 if enabled aarch64; then
4510     echo "NEON enabled              ${neon-no}"
4511     echo "VFP enabled               ${vfp-no}"
4512 fi
4513 if enabled arm; then
4514     echo "ARMv5TE enabled           ${armv5te-no}"
4515     echo "ARMv6 enabled             ${armv6-no}"
4516     echo "ARMv6T2 enabled           ${armv6t2-no}"
4517     echo "VFP enabled               ${vfp-no}"
4518     echo "NEON enabled              ${neon-no}"
4519 fi
4520 if enabled ppc; then
4521     echo "AltiVec enabled           ${altivec-no}"
4522     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4523     echo "dcbzl available           ${dcbzl-no}"
4524 fi
4525 echo "debug symbols             ${debug-no}"
4526 echo "optimize for size         ${small-no}"
4527 echo "optimizations             ${optimizations-no}"
4528 echo "static                    ${static-no}"
4529 echo "shared                    ${shared-no}"
4530 echo "new filter support        ${avfilter-no}"
4531 echo "network support           ${network-no}"
4532 echo "threading support         ${thread_type-no}"
4533 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4534 echo "SDL support               ${sdl-no}"
4535 test -n "$random_seed" &&
4536     echo "random seed               ${random_seed}"
4537 echo
4538
4539 echo "External libraries:"
4540 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4541 echo
4542
4543 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4544     echo "Enabled ${type}s:"
4545     eval list=\$$(toupper $type)_LIST
4546     print_enabled '_*' $list | print_3_columns
4547     echo
4548 done
4549
4550 license="LGPL version 2.1 or later"
4551 if enabled nonfree; then
4552     license="nonfree and unredistributable"
4553 elif enabled gplv3; then
4554     license="GPL version 3 or later"
4555 elif enabled lgplv3; then
4556     license="LGPL version 3 or later"
4557 elif enabled gpl; then
4558     license="GPL version 2 or later"
4559 fi
4560
4561 echo "License: $license"
4562
4563 echo "Creating config.mak and config.h..."
4564
4565 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4566
4567 config_files="$TMPH config.mak"
4568
4569 cat > config.mak <<EOF
4570 # Automatically generated by configure - do not modify!
4571 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4572 prefix=$prefix
4573 LIBDIR=\$(DESTDIR)$libdir
4574 SHLIBDIR=\$(DESTDIR)$shlibdir
4575 INCDIR=\$(DESTDIR)$incdir
4576 BINDIR=\$(DESTDIR)$bindir
4577 DATADIR=\$(DESTDIR)$datadir
4578 DOCDIR=\$(DESTDIR)$docdir
4579 MANDIR=\$(DESTDIR)$mandir
4580 SRC_PATH=$source_path
4581 CC_IDENT=$cc_ident
4582 ARCH=$arch
4583 INTRINSICS=$intrinsics
4584 CC=$cc
4585 AS=$as
4586 LD=$ld
4587 DEPCC=$dep_cc
4588 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4589 DEPAS=$as
4590 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4591 YASM=$yasmexe
4592 DEPYASM=$yasmexe
4593 AR=$ar
4594 ARFLAGS=$arflags
4595 AR_O=$ar_o
4596 RANLIB=$ranlib
4597 STRIP=$strip
4598 LN_S=$ln_s
4599 CPPFLAGS=$CPPFLAGS
4600 CFLAGS=$CFLAGS
4601 ASFLAGS=$ASFLAGS
4602 AS_C=$AS_C
4603 AS_O=$AS_O
4604 CC_C=$CC_C
4605 CC_E=$CC_E
4606 CC_O=$CC_O
4607 LD_O=$LD_O
4608 LD_LIB=$LD_LIB
4609 LD_PATH=$LD_PATH
4610 DLLTOOL=$dlltool
4611 LDFLAGS=$LDFLAGS
4612 LDEXEFLAGS=$LDEXEFLAGS
4613 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4614 STRIPFLAGS=$STRIPFLAGS
4615 YASMFLAGS=$YASMFLAGS
4616 BUILDSUF=$build_suffix
4617 FULLNAME=$FULLNAME
4618 LIBPREF=$LIBPREF
4619 LIBSUF=$LIBSUF
4620 LIBNAME=$LIBNAME
4621 SLIBPREF=$SLIBPREF
4622 SLIBSUF=$SLIBSUF
4623 EXESUF=$EXESUF
4624 EXTRA_VERSION=$extra_version
4625 CCDEP=$CCDEP
4626 CCDEP_FLAGS=$CCDEP_FLAGS
4627 ASDEP=$ASDEP
4628 ASDEP_FLAGS=$ASDEP_FLAGS
4629 CC_DEPFLAGS=$CC_DEPFLAGS
4630 AS_DEPFLAGS=$AS_DEPFLAGS
4631 HOSTCC=$host_cc
4632 HOSTLD=$host_ld
4633 HOSTCFLAGS=$host_cflags
4634 HOSTCPPFLAGS=$host_cppflags
4635 HOSTEXESUF=$HOSTEXESUF
4636 HOSTLDFLAGS=$host_ldflags
4637 HOSTLIBS=$host_libs
4638 DEPHOSTCC=$host_cc
4639 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4640 HOSTCCDEP=$HOSTCCDEP
4641 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4642 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4643 HOSTCC_C=$HOSTCC_C
4644 HOSTCC_O=$HOSTCC_O
4645 HOSTLD_O=$HOSTLD_O
4646 TARGET_EXEC=$target_exec $target_exec_args
4647 TARGET_PATH=$target_path
4648 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4649 CFLAGS-avplay=$sdl_cflags
4650 ZLIB=$($ldflags_filter -lz)
4651 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4652 EXTRALIBS=$extralibs
4653 COMPAT_OBJS=$compat_objs
4654 EXEOBJS=$exeobjs
4655 INSTALL=install
4656 LIBTARGET=${LIBTARGET}
4657 SLIBNAME=${SLIBNAME}
4658 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4659 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4660 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4661 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4662 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4663 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4664 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4665 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4666 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4667 EOF
4668
4669 get_version(){
4670     lcname=lib${1}
4671     name=$(toupper $lcname)
4672     file=$source_path/$lcname/version.h
4673     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4674     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4675     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4676     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4677     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4678 }
4679
4680 map 'get_version $v' $LIBRARY_LIST
4681
4682 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4683
4684 print_program_libs(){
4685     eval "program_libs=\$${1}_libs"
4686     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4687 }
4688
4689 map 'print_program_libs $v' $PROGRAM_LIST
4690
4691 cat > $TMPH <<EOF
4692 /* Automatically generated by configure - do not modify! */
4693 #ifndef LIBAV_CONFIG_H
4694 #define LIBAV_CONFIG_H
4695 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4696 #define LIBAV_LICENSE "$(c_escape $license)"
4697 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4698 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4699 #define restrict $_restrict
4700 #define EXTERN_PREFIX "${extern_prefix}"
4701 #define EXTERN_ASM ${extern_prefix}
4702 #define SLIBSUF "$SLIBSUF"
4703 EOF
4704
4705 test -n "$malloc_prefix" &&
4706     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4707
4708 if enabled yasm; then
4709     append config_files $TMPASM
4710     printf '' >$TMPASM
4711 fi
4712
4713 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4714
4715 print_config ARCH_   "$config_files" $ARCH_LIST
4716 print_config HAVE_   "$config_files" $HAVE_LIST
4717 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4718                                      $CONFIG_EXTRA      \
4719                                      $ALL_COMPONENTS    \
4720
4721 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4722
4723 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4724 cp_if_changed $TMPH config.h
4725 touch .config
4726
4727 enabled yasm && cp_if_changed $TMPASM config.asm
4728
4729 cat > $TMPH <<EOF
4730 /* Generated by ffconf */
4731 #ifndef AVUTIL_AVCONFIG_H
4732 #define AVUTIL_AVCONFIG_H
4733 EOF
4734
4735 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4736
4737 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4738
4739 cp_if_changed $TMPH libavutil/avconfig.h
4740
4741 test -n "$WARNINGS" && printf "\n$WARNINGS"
4742
4743 # build pkg-config files
4744
4745 lib_version(){
4746     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4747 }
4748
4749 pkgconfig_generate(){
4750     name=$1
4751     shortname=${name#lib}${build_suffix}
4752     comment=$2
4753     version=$3
4754     libs=$4
4755     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4756     requires=${requires%, }
4757     enabled ${name#lib} || return 0
4758     mkdir -p $name
4759     cat <<EOF > $name/$name.pc
4760 prefix=$prefix
4761 exec_prefix=\${prefix}
4762 libdir=$libdir
4763 includedir=$incdir
4764
4765 Name: $name
4766 Description: $comment
4767 Version: $version
4768 Requires: $(enabled shared || echo $requires)
4769 Requires.private: $(enabled shared && echo $requires)
4770 Conflicts:
4771 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4772 Libs.private: $(enabled shared && echo $libs)
4773 Cflags: -I\${includedir}
4774 EOF
4775     cat <<EOF > $name/$name-uninstalled.pc
4776 prefix=
4777 exec_prefix=
4778 libdir=\${pcfiledir}
4779 includedir=${source_path}
4780
4781 Name: $name
4782 Description: $comment
4783 Version: $version
4784 Requires: $requires
4785 Conflicts:
4786 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4787 Cflags: -I\${includedir}
4788 EOF
4789 }
4790
4791 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4792 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
4793 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
4794 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
4795 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
4796 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$LIBM"
4797 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"