On2 VP7 decoder
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105
106 Program options:
107   --disable-programs       do not build command line programs
108   --disable-avconv         disable avconv build
109   --disable-avplay         disable avplay build
110   --disable-avprobe        disable avprobe build
111   --disable-avserver       disable avserver build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-avdevice       disable libavdevice build
116   --disable-avcodec        disable libavcodec build
117   --disable-avformat       disable libavformat build
118   --disable-avutil         disable libavutil build
119   --disable-swscale        disable libswscale build
120   --disable-avfilter       disable video filter support [no]
121   --disable-avresample     disable libavresample build [no]
122   --disable-pthreads       disable pthreads [auto]
123   --disable-w32threads     disable Win32 threads [auto]
124   --disable-network        disable network support [no]
125   --disable-dct            disable DCT code
126   --disable-error-resilience disable error resilience code
127   --disable-lsp            disable LSP code
128   --disable-lzo            disable LZO decoder code
129   --disable-mdct           disable MDCT code
130   --disable-rdft           disable RDFT code
131   --disable-fft            disable FFT code
132
133 Hardware accelerators:
134   --enable-dxva2           enable DXVA2 code
135   --enable-vaapi           enable VAAPI code
136   --enable-vda             enable VDA code
137   --enable-vdpau           enable VDPAU code
138
139 Individual component options:
140   --disable-everything     disable all components listed below
141   --disable-encoder=NAME   disable encoder NAME
142   --enable-encoder=NAME    enable encoder NAME
143   --disable-encoders       disable all encoders
144   --disable-decoder=NAME   disable decoder NAME
145   --enable-decoder=NAME    enable decoder NAME
146   --disable-decoders       disable all decoders
147   --disable-hwaccel=NAME   disable hwaccel NAME
148   --enable-hwaccel=NAME    enable hwaccel NAME
149   --disable-hwaccels       disable all hwaccels
150   --disable-muxer=NAME     disable muxer NAME
151   --enable-muxer=NAME      enable muxer NAME
152   --disable-muxers         disable all muxers
153   --disable-demuxer=NAME   disable demuxer NAME
154   --enable-demuxer=NAME    enable demuxer NAME
155   --disable-demuxers       disable all demuxers
156   --enable-parser=NAME     enable parser NAME
157   --disable-parser=NAME    disable parser NAME
158   --disable-parsers        disable all parsers
159   --enable-bsf=NAME        enable bitstream filter NAME
160   --disable-bsf=NAME       disable bitstream filter NAME
161   --disable-bsfs           disable all bitstream filters
162   --enable-protocol=NAME   enable protocol NAME
163   --disable-protocol=NAME  disable protocol NAME
164   --disable-protocols      disable all protocols
165   --enable-indev=NAME      enable input device NAME
166   --disable-indev=NAME     disable input device NAME
167   --disable-indevs         disable input devices
168   --enable-outdev=NAME     enable output device NAME
169   --disable-outdev=NAME    disable output device NAME
170   --disable-outdevs        disable output devices
171   --disable-devices        disable all devices
172   --enable-filter=NAME     enable filter NAME
173   --disable-filter=NAME    disable filter NAME
174   --disable-filters        disable all filters
175
176 External library support:
177   --enable-avisynth        enable reading of AviSynth script files [no]
178   --enable-bzlib           enable bzlib [autodetect]
179   --enable-frei0r          enable frei0r video filtering
180   --enable-gnutls          enable gnutls [no]
181   --enable-libcdio         enable audio CD grabbing with libcdio
182   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
183                            and libraw1394 [no]
184   --enable-libfaac         enable AAC encoding via libfaac [no]
185   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
186   --enable-libfreetype     enable libfreetype [no]
187   --enable-libgsm          enable GSM de/encoding via libgsm [no]
188   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
189   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
190   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
191   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
192   --enable-libopencv       enable video filtering via libopencv [no]
193   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
194   --enable-libopus         enable Opus decoding via libopus [no]
195   --enable-libpulse        enable Pulseaudio input via libpulse [no]
196   --enable-librtmp         enable RTMP[E] support via librtmp [no]
197   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
198   --enable-libspeex        enable Speex de/encoding via libspeex [no]
199   --enable-libtheora       enable Theora encoding via libtheora [no]
200   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
201   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
202   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
203   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
204   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
205   --enable-libwebp         enable WebP encoding via libwebp [no]
206   --enable-libx264         enable H.264 encoding via x264 [no]
207   --enable-libx265         enable HEVC encoding via x265 [no]
208   --enable-libxavs         enable AVS encoding via xavs [no]
209   --enable-libxvid         enable Xvid encoding via xvidcore,
210                            native MPEG-4/Xvid encoder exists [no]
211   --enable-openssl         enable openssl [no]
212   --enable-x11grab         enable X11 grabbing [no]
213   --enable-zlib            enable zlib [autodetect]
214
215 Toolchain options:
216   --arch=ARCH              select architecture [$arch]
217   --cpu=CPU                select the minimum required CPU (affects
218                            instruction selection, may crash on older CPUs)
219   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
220   --enable-cross-compile   assume a cross-compiler is used
221   --sysroot=PATH           root of cross-build tree
222   --sysinclude=PATH        location of cross-build system headers
223   --target-os=OS           compiler targets OS [$target_os]
224   --target-exec=CMD        command to run executables on target
225   --target-path=DIR        path to view of build directory on target
226   --target-samples=DIR     path to samples directory on target
227   --toolchain=NAME         set tool defaults according to NAME
228   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
229   --nm=NM                  use nm tool
230   --ar=AR                  use archive tool AR [$ar_default]
231   --as=AS                  use assembler AS [$as_default]
232   --cc=CC                  use C compiler CC [$cc_default]
233   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
234   --ld=LD                  use linker LD
235   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
236   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
237   --host-cc=HOSTCC         use host C compiler HOSTCC
238   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
239   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
240   --host-ld=HOSTLD         use host linker HOSTLD
241   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
242   --host-libs=HLIBS        use libs HLIBS when linking for host
243   --host-os=OS             compiler host OS [$target_os]
244   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
245   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
246   --extra-libs=ELIBS       add ELIBS [$ELIBS]
247   --extra-version=STRING   version string suffix []
248   --optflags=OPTFLAGS      override optimization-related compiler flags
249   --build-suffix=SUFFIX    library name suffix []
250   --enable-pic             build position-independent code
251   --enable-thumb           compile for Thumb instruction set
252   --enable-lto             use link-time optimization
253
254 Advanced options (experts only):
255   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
256   --disable-symver         disable symbol versioning
257   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
258   --disable-safe-bitstream-reader
259                            disable buffer boundary checking in bitreaders
260                            (faster, but may crash)
261   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
262   --enable-sram            allow use of on-chip SRAM
263
264 Optimization options (experts only):
265   --disable-asm            disable all assembler optimizations
266   --disable-altivec        disable AltiVec optimizations
267   --disable-amd3dnow       disable 3DNow! optimizations
268   --disable-amd3dnowext    disable 3DNow! extended optimizations
269   --disable-mmx            disable MMX optimizations
270   --disable-mmxext         disable MMXEXT optimizations
271   --disable-sse            disable SSE optimizations
272   --disable-sse2           disable SSE2 optimizations
273   --disable-sse3           disable SSE3 optimizations
274   --disable-ssse3          disable SSSE3 optimizations
275   --disable-sse4           disable SSE4 optimizations
276   --disable-sse42          disable SSE4.2 optimizations
277   --disable-avx            disable AVX optimizations
278   --disable-xop            disable XOP optimizations
279   --disable-fma3           disable FMA3 optimizations
280   --disable-fma4           disable FMA4 optimizations
281   --disable-avx2           disable AVX2 optimizations
282   --disable-armv5te        disable armv5te optimizations
283   --disable-armv6          disable armv6 optimizations
284   --disable-armv6t2        disable armv6t2 optimizations
285   --disable-vfp            disable VFP optimizations
286   --disable-neon           disable NEON optimizations
287   --disable-inline-asm     disable use of inline assembler
288   --disable-yasm           disable use of yasm assembler
289
290 Developer options (useful when working on Libav itself):
291   --disable-debug          disable debugging symbols
292   --enable-debug=LEVEL     set the debug level [$debuglevel]
293   --disable-optimizations  disable compiler optimizations
294   --enable-extra-warnings  enable more compiler warnings
295   --samples=PATH           location of test samples for FATE, if not set use
296                            \$LIBAV_SAMPLES at make invocation time.
297   --enable-neon-clobber-test check NEON registers for clobbering (should be
298                            used only for debugging purposes)
299   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
300                            should be used only for debugging purposes)
301   --enable-random          randomly enable/disable components
302   --disable-random
303   --enable-random=LIST     randomly enable/disable specific components or
304   --disable-random=LIST    component groups. LIST is a comma-separated list
305                            of NAME[:PROB] entries where NAME is a component
306                            (group) and PROB the probability associated with
307                            NAME (default 0.5).
308   --random-seed=VALUE      seed value for --enable/disable-random
309
310 NOTE: Object files are built at the place where configure is launched.
311 EOF
312   exit 0
313 }
314
315 quotes='""'
316
317 log(){
318     echo "$@" >> $logfile
319 }
320
321 log_file(){
322     log BEGIN $1
323     pr -n -t $1 >> $logfile
324     log END $1
325 }
326
327 echolog(){
328     log "$@"
329     echo "$@"
330 }
331
332 warn(){
333     log "WARNING: $*"
334     WARNINGS="${WARNINGS}WARNING: $*\n"
335 }
336
337 die(){
338     echolog "$@"
339     cat <<EOF
340
341 If you think configure made a mistake, make sure you are using the latest
342 version from Git.  If the latest version fails, report the problem to the
343 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
344 EOF
345     if disabled logging; then
346         cat <<EOF
347 Rerun configure with logging enabled (do not use --disable-logging), and
348 include the log this produces with your report.
349 EOF
350     else
351         cat <<EOF
352 Include the log file "$logfile" produced by configure as this will help
353 solving the problem.
354 EOF
355     fi
356     exit 1
357 }
358
359 # Avoid locale weirdness, besides we really just want to translate ASCII.
360 toupper(){
361     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
362 }
363
364 tolower(){
365     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
366 }
367
368 c_escape(){
369     echo "$*" | sed 's/["\\]/\\\0/g'
370 }
371
372 sh_quote(){
373     v=$(echo "$1" | sed "s/'/'\\\\''/g")
374     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
375     echo "$v"
376 }
377
378 cleanws(){
379     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
380 }
381
382 filter(){
383     pat=$1
384     shift
385     for v; do
386         eval "case $v in $pat) echo $v ;; esac"
387     done
388 }
389
390 filter_out(){
391     pat=$1
392     shift
393     for v; do
394         eval "case $v in $pat) ;; *) echo $v ;; esac"
395     done
396 }
397
398 map(){
399     m=$1
400     shift
401     for v; do eval $m; done
402 }
403
404 add_suffix(){
405     suffix=$1
406     shift
407     for v; do echo ${v}${suffix}; done
408 }
409
410 set_all(){
411     value=$1
412     shift
413     for var in $*; do
414         eval $var=$value
415     done
416 }
417
418 set_weak(){
419     value=$1
420     shift
421     for var; do
422         eval : \${$var:=$value}
423     done
424 }
425
426 sanitize_var_name(){
427     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
428 }
429
430 set_safe(){
431     var=$1
432     shift
433     eval $(sanitize_var_name "$var")='$*'
434 }
435
436 get_safe(){
437     eval echo \$$(sanitize_var_name "$1")
438 }
439
440 pushvar(){
441     for pvar in $*; do
442         eval level=\${${pvar}_level:=0}
443         eval ${pvar}_${level}="\$$pvar"
444         eval ${pvar}_level=$(($level+1))
445     done
446 }
447
448 popvar(){
449     for pvar in $*; do
450         eval level=\${${pvar}_level:-0}
451         test $level = 0 && continue
452         eval level=$(($level-1))
453         eval $pvar="\${${pvar}_${level}}"
454         eval ${pvar}_level=$level
455         eval unset ${pvar}_${level}
456     done
457 }
458
459 enable(){
460     set_all yes $*
461 }
462
463 disable(){
464     set_all no $*
465 }
466
467 enable_weak(){
468     set_weak yes $*
469 }
470
471 disable_weak(){
472     set_weak no $*
473 }
474
475 enable_safe(){
476     for var; do
477         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
478     done
479 }
480
481 disable_safe(){
482     for var; do
483         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
484     done
485 }
486
487 do_enable_deep(){
488     for var; do
489         enabled $var && continue
490         eval sel="\$${var}_select"
491         eval sgs="\$${var}_suggest"
492         pushvar var sgs
493         enable_deep $sel
494         popvar sgs
495         enable_deep_weak $sgs
496         popvar var
497     done
498 }
499
500 enable_deep(){
501     do_enable_deep $*
502     enable $*
503 }
504
505 enable_deep_weak(){
506     for var; do
507         disabled $var && continue
508         pushvar var
509         do_enable_deep $var
510         popvar var
511         enable_weak $var
512     done
513 }
514
515 enabled(){
516     test "${1#!}" = "$1" && op== || op=!=
517     eval test "x\$${1#!}" $op "xyes"
518 }
519
520 disabled(){
521     test "${1#!}" = "$1" && op== || op=!=
522     eval test "x\$${1#!}" $op "xno"
523 }
524
525 enabled_all(){
526     for opt; do
527         enabled $opt || return 1
528     done
529 }
530
531 disabled_all(){
532     for opt; do
533         disabled $opt || return 1
534     done
535 }
536
537 enabled_any(){
538     for opt; do
539         enabled $opt && return 0
540     done
541 }
542
543 disabled_any(){
544     for opt; do
545         disabled $opt && return 0
546     done
547     return 1
548 }
549
550 set_default(){
551     for opt; do
552         eval : \${$opt:=\$${opt}_default}
553     done
554 }
555
556 is_in(){
557     value=$1
558     shift
559     for var in $*; do
560         [ $var = $value ] && return 0
561     done
562     return 1
563 }
564
565 do_check_deps(){
566     for cfg; do
567         cfg="${cfg#!}"
568         enabled ${cfg}_checking && die "Circular dependency for $cfg."
569         disabled ${cfg}_checking && continue
570         enable ${cfg}_checking
571         append allopts $cfg
572
573         eval dep_all="\$${cfg}_deps"
574         eval dep_any="\$${cfg}_deps_any"
575         eval dep_sel="\$${cfg}_select"
576         eval dep_sgs="\$${cfg}_suggest"
577         eval dep_ifa="\$${cfg}_if"
578         eval dep_ifn="\$${cfg}_if_any"
579
580         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
581         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
582         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
583
584         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
585         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
586         enabled_all  $dep_all || disable $cfg
587         enabled_any  $dep_any || disable $cfg
588         disabled_any $dep_sel && disable $cfg
589
590         if enabled $cfg; then
591             enable_deep $dep_sel
592             enable_deep_weak $dep_sgs
593         fi
594
595         disable ${cfg}_checking
596     done
597 }
598
599 check_deps(){
600     unset allopts
601
602     do_check_deps "$@"
603
604     for cfg in $allopts; do
605         enabled $cfg || continue
606         eval dep_extralibs="\$${cfg}_extralibs"
607         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
608     done
609 }
610
611 print_config(){
612     pfx=$1
613     files=$2
614     shift 2
615     map 'eval echo "$v \${$v:-no}"' "$@" |
616     awk "BEGIN { split(\"$files\", files) }
617         {
618             c = \"$pfx\" toupper(\$1);
619             v = \$2;
620             sub(/yes/, 1, v);
621             sub(/no/,  0, v);
622             for (f in files) {
623                 file = files[f];
624                 if (file ~ /\\.h\$/) {
625                     printf(\"#define %s %d\\n\", c, v) >>file;
626                 } else if (file ~ /\\.asm\$/) {
627                     printf(\"%%define %s %d\\n\", c, v) >>file;
628                 } else if (file ~ /\\.mak\$/) {
629                     n = -v ? \"\" : \"!\";
630                     printf(\"%s%s=yes\\n\", n, c) >>file;
631                 }
632             }
633         }"
634 }
635
636 print_enabled(){
637     suf=$1
638     shift
639     for v; do
640         enabled $v && printf "%s\n" ${v%$suf};
641     done
642 }
643
644 append(){
645     var=$1
646     shift
647     eval "$var=\"\$$var $*\""
648 }
649
650 prepend(){
651     var=$1
652     shift
653     eval "$var=\"$* \$$var\""
654 }
655
656 add_cppflags(){
657     append CPPFLAGS "$@"
658 }
659
660 add_cflags(){
661     append CFLAGS $($cflags_filter "$@")
662 }
663
664 add_asflags(){
665     append ASFLAGS $($asflags_filter "$@")
666 }
667
668 add_ldflags(){
669     append LDFLAGS $($ldflags_filter "$@")
670 }
671
672 add_stripflags(){
673     append STRIPFLAGS "$@"
674 }
675
676 add_extralibs(){
677     prepend extralibs $($ldflags_filter "$@")
678 }
679
680 add_host_cppflags(){
681     append host_cppflags "$@"
682 }
683
684 add_host_cflags(){
685     append host_cflags $($host_cflags_filter "$@")
686 }
687
688 add_host_ldflags(){
689     append host_ldflags $($host_ldflags_filter "$@")
690 }
691
692 add_compat(){
693     append compat_objs $1
694     shift
695     map 'add_cppflags -D$v' "$@"
696 }
697
698 check_cmd(){
699     log "$@"
700     "$@" >> $logfile 2>&1
701 }
702
703 cc_o(){
704     eval printf '%s\\n' $CC_O
705 }
706
707 cc_e(){
708     eval printf '%s\\n' $CC_E
709 }
710
711 check_cc(){
712     log check_cc "$@"
713     cat > $TMPC
714     log_file $TMPC
715     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
716 }
717
718 check_cpp(){
719     log check_cpp "$@"
720     cat > $TMPC
721     log_file $TMPC
722     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
723 }
724
725 as_o(){
726     eval printf '%s\\n' $AS_O
727 }
728
729 check_as(){
730     log check_as "$@"
731     cat > $TMPS
732     log_file $TMPS
733     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
734 }
735
736 check_inline_asm(){
737     log check_inline_asm "$@"
738     name="$1"
739     code="$2"
740     shift 2
741     disable $name
742     check_cc "$@" <<EOF && enable $name
743 void foo(void){ __asm__ volatile($code); }
744 EOF
745 }
746
747 check_insn(){
748     log check_insn "$@"
749     check_inline_asm ${1}_inline "\"$2\""
750     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
751 }
752
753 check_yasm(){
754     log check_yasm "$@"
755     echo "$1" > $TMPS
756     log_file $TMPS
757     shift 1
758     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
759 }
760
761 ld_o(){
762     eval printf '%s\\n' $LD_O
763 }
764
765 check_ld(){
766     log check_ld "$@"
767     flags=$(filter_out '-l*' "$@")
768     libs=$(filter '-l*' "$@")
769     check_cc $($cflags_filter $flags) || return
770     flags=$($ldflags_filter $flags)
771     libs=$($ldflags_filter $libs)
772     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
773 }
774
775 print_include(){
776     hdr=$1
777     test "${hdr%.h}" = "${hdr}" &&
778         echo "#include $hdr"    ||
779         echo "#include <$hdr>"
780 }
781
782 check_code(){
783     log check_code "$@"
784     check=$1
785     headers=$2
786     code=$3
787     shift 3
788     {
789         for hdr in $headers; do
790             print_include $hdr
791         done
792         echo "int main(void) { $code; return 0; }"
793     } | check_$check "$@"
794 }
795
796 check_cppflags(){
797     log check_cppflags "$@"
798     check_cc "$@" <<EOF && append CPPFLAGS "$@"
799 int x;
800 EOF
801 }
802
803 test_cflags(){
804     log test_cflags "$@"
805     set -- $($cflags_filter "$@")
806     check_cc "$@" <<EOF
807 int x;
808 EOF
809 }
810
811 check_cflags(){
812     log check_cflags "$@"
813     test_cflags "$@" && add_cflags "$@"
814 }
815
816 test_ldflags(){
817     log test_ldflags "$@"
818     check_ld "$@" <<EOF
819 int main(void){ return 0; }
820 EOF
821 }
822
823 check_ldflags(){
824     log check_ldflags "$@"
825     test_ldflags "$@" && add_ldflags "$@"
826 }
827
828 test_stripflags(){
829     log test_stripflags "$@"
830     # call check_cc to get a fresh TMPO
831     check_cc <<EOF
832 int main(void) { return 0; }
833 EOF
834     check_cmd $strip $STRIPFLAGS "$@" $TMPO
835 }
836
837 check_stripflags(){
838     log check_stripflags "$@"
839     test_stripflags "$@" && add_stripflags "$@"
840 }
841
842 check_header(){
843     log check_header "$@"
844     header=$1
845     shift
846     disable_safe $header
847     check_cpp "$@" <<EOF && enable_safe $header
848 #include <$header>
849 int x;
850 EOF
851 }
852
853 check_func(){
854     log check_func "$@"
855     func=$1
856     shift
857     disable $func
858     check_ld "$@" <<EOF && enable $func
859 extern int $func();
860 int main(void){ $func(); }
861 EOF
862 }
863
864 check_mathfunc(){
865     log check_mathfunc "$@"
866     func=$1
867     narg=$2
868     shift 2
869     test $narg = 2 && args="f, g" || args="f"
870     disable $func
871     check_ld "$@" <<EOF && enable $func
872 #include <math.h>
873 float foo(float f, float g) { return $func($args); }
874 int main(void){ return 0; }
875 EOF
876 }
877
878 check_func_headers(){
879     log check_func_headers "$@"
880     headers=$1
881     funcs=$2
882     shift 2
883     {
884         for hdr in $headers; do
885             print_include $hdr
886         done
887         for func in $funcs; do
888             echo "long check_$func(void) { return (long) $func; }"
889         done
890         echo "int main(void) { return 0; }"
891     } | check_ld "$@" && enable $funcs && enable_safe $headers
892 }
893
894 check_cpp_condition(){
895     log check_cpp_condition "$@"
896     header=$1
897     condition=$2
898     shift 2
899     check_cpp "$@" <<EOF
900 #include <$header>
901 #if !($condition)
902 #error "unsatisfied condition: $condition"
903 #endif
904 EOF
905 }
906
907 check_lib(){
908     log check_lib "$@"
909     header="$1"
910     func="$2"
911     shift 2
912     check_header $header && check_func $func "$@" && add_extralibs "$@"
913 }
914
915 check_lib2(){
916     log check_lib2 "$@"
917     headers="$1"
918     funcs="$2"
919     shift 2
920     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
921 }
922
923 check_pkg_config(){
924     log check_pkg_config "$@"
925     pkg="$1"
926     headers="$2"
927     funcs="$3"
928     shift 3
929     check_cmd $pkg_config --exists --print-errors $pkg || return
930     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
931     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
932     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
933         set_safe ${pkg}_cflags $pkg_cflags   &&
934         set_safe ${pkg}_libs   $pkg_libs
935 }
936
937 check_exec(){
938     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
939 }
940
941 check_exec_crash(){
942     code=$(cat)
943
944     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
945     # are safe but may not be available everywhere.  Thus we use
946     # raise(SIGTERM) instead.  The check is run in a subshell so we
947     # can redirect the "Terminated" message from the shell.  SIGBUS
948     # is not defined by standard C so it is used conditionally.
949
950     (check_exec "$@") >> $logfile 2>&1 <<EOF
951 #include <signal.h>
952 static void sighandler(int sig){
953     raise(SIGTERM);
954 }
955 int foo(void){
956     $code
957 }
958 int (*func_ptr)(void) = foo;
959 int main(void){
960     signal(SIGILL, sighandler);
961     signal(SIGFPE, sighandler);
962     signal(SIGSEGV, sighandler);
963 #ifdef SIGBUS
964     signal(SIGBUS, sighandler);
965 #endif
966     return func_ptr();
967 }
968 EOF
969 }
970
971 check_type(){
972     log check_type "$@"
973     headers=$1
974     type=$2
975     shift 2
976     disable_safe "$type"
977     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
978 }
979
980 check_struct(){
981     log check_struct "$@"
982     headers=$1
983     struct=$2
984     member=$3
985     shift 3
986     disable_safe "${struct}_${member}"
987     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
988         enable_safe "${struct}_${member}"
989 }
990
991 check_builtin(){
992     log check_builtin "$@"
993     name=$1
994     headers=$2
995     builtin=$3
996     shift 3
997     disable "$name"
998     check_code ld "$headers" "$builtin" "$@" && enable "$name"
999 }
1000
1001 check_compile_assert(){
1002     log check_compile_assert "$@"
1003     name=$1
1004     headers=$2
1005     condition=$3
1006     shift 3
1007     disable "$name"
1008     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1009 }
1010
1011 require(){
1012     name="$1"
1013     header="$2"
1014     func="$3"
1015     shift 3
1016     check_lib $header $func "$@" || die "ERROR: $name not found"
1017 }
1018
1019 require2(){
1020     name="$1"
1021     headers="$2"
1022     func="$3"
1023     shift 3
1024     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1025 }
1026
1027 require_pkg_config(){
1028     pkg="$1"
1029     check_pkg_config "$@" || die "ERROR: $pkg not found"
1030     add_cflags    $(get_safe ${pkg}_cflags)
1031     add_extralibs $(get_safe ${pkg}_libs)
1032 }
1033
1034 hostcc_e(){
1035     eval printf '%s\\n' $HOSTCC_E
1036 }
1037
1038 hostcc_o(){
1039     eval printf '%s\\n' $HOSTCC_O
1040 }
1041
1042 check_host_cc(){
1043     log check_host_cc "$@"
1044     cat > $TMPC
1045     log_file $TMPC
1046     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1047 }
1048
1049 check_host_cpp(){
1050     log check_host_cpp "$@"
1051     cat > $TMPC
1052     log_file $TMPC
1053     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1054 }
1055
1056 check_host_cppflags(){
1057     log check_host_cppflags "$@"
1058     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1059 int x;
1060 EOF
1061 }
1062
1063 check_host_cflags(){
1064     log check_host_cflags "$@"
1065     set -- $($host_cflags_filter "$@")
1066     check_host_cc "$@" <<EOF && append host_cflags "$@"
1067 int x;
1068 EOF
1069 }
1070
1071 check_host_cpp_condition(){
1072     log check_host_cpp_condition "$@"
1073     header=$1
1074     condition=$2
1075     shift 2
1076     check_host_cpp "$@" <<EOF
1077 #include <$header>
1078 #if !($condition)
1079 #error "unsatisfied condition: $condition"
1080 #endif
1081 EOF
1082 }
1083
1084 apply(){
1085     file=$1
1086     shift
1087     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1088 }
1089
1090 cp_if_changed(){
1091     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1092     mkdir -p "$(dirname $2)"
1093     $cp_f "$1" "$2"
1094 }
1095
1096 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1097 # system-dependent things.
1098
1099 COMPONENT_LIST="
1100     bsfs
1101     decoders
1102     demuxers
1103     encoders
1104     filters
1105     hwaccels
1106     indevs
1107     muxers
1108     outdevs
1109     parsers
1110     protocols
1111 "
1112
1113 EXAMPLE_LIST="
1114     avcodec_example
1115     filter_audio_example
1116     metadata_example
1117     output_example
1118     transcode_aac_example
1119 "
1120
1121 EXTERNAL_LIBRARY_LIST="
1122     avisynth
1123     bzlib
1124     frei0r
1125     gnutls
1126     libcdio
1127     libdc1394
1128     libfaac
1129     libfdk_aac
1130     libfreetype
1131     libgsm
1132     libilbc
1133     libmp3lame
1134     libopencore_amrnb
1135     libopencore_amrwb
1136     libopencv
1137     libopenjpeg
1138     libopus
1139     libpulse
1140     librtmp
1141     libschroedinger
1142     libspeex
1143     libtheora
1144     libvo_aacenc
1145     libvo_amrwbenc
1146     libvorbis
1147     libvpx
1148     libwavpack
1149     libwebp
1150     libx264
1151     libx265
1152     libxavs
1153     libxvid
1154     openssl
1155     x11grab
1156     zlib
1157 "
1158
1159 FEATURE_LIST="
1160     gray
1161     hardcoded_tables
1162     runtime_cpudetect
1163     safe_bitstream_reader
1164     shared
1165     small
1166     sram
1167     static
1168     swscale_alpha
1169 "
1170
1171 HWACCEL_LIST="
1172     dxva2
1173     vaapi
1174     vda
1175     vdpau
1176 "
1177
1178 LIBRARY_LIST="
1179     avcodec
1180     avdevice
1181     avfilter
1182     avformat
1183     avresample
1184     avutil
1185     swscale
1186 "
1187
1188 LICENSE_LIST="
1189     gpl
1190     nonfree
1191     version3
1192 "
1193
1194 PROGRAM_LIST="
1195     avconv
1196     avplay
1197     avprobe
1198     avserver
1199 "
1200
1201 SUBSYSTEM_LIST="
1202     dct
1203     doc
1204     error_resilience
1205     fft
1206     lsp
1207     lzo
1208     mdct
1209     network
1210     rdft
1211 "
1212
1213 CONFIG_LIST="
1214     $COMPONENT_LIST
1215     $EXAMPLE_LIST
1216     $EXTERNAL_LIBRARY_LIST
1217     $FEATURE_LIST
1218     $HWACCEL_LIST
1219     $LICENSE_LIST
1220     $LIBRARY_LIST
1221     $PROGRAM_LIST
1222     $SUBSYSTEM_LIST
1223     memalign_hack
1224     neon_clobber_test
1225     pic
1226     pod2man
1227     texi2html
1228     thumb
1229     xmm_clobber_test
1230 "
1231
1232 THREADS_LIST="
1233     pthreads
1234     w32threads
1235 "
1236
1237 ATOMICS_LIST="
1238     atomics_gcc
1239     atomics_suncc
1240     atomics_win32
1241 "
1242
1243 ARCH_LIST="
1244     aarch64
1245     alpha
1246     arm
1247     avr32
1248     avr32_ap
1249     avr32_uc
1250     bfin
1251     ia64
1252     m68k
1253     mips
1254     mips64
1255     parisc
1256     ppc
1257     ppc64
1258     s390
1259     sh4
1260     sparc
1261     sparc64
1262     tilegx
1263     tilepro
1264     tomi
1265     x86
1266     x86_32
1267     x86_64
1268 "
1269
1270 ARCH_EXT_LIST_ARM="
1271     armv5te
1272     armv6
1273     armv6t2
1274     neon
1275     vfp
1276     vfpv3
1277 "
1278
1279 ARCH_EXT_LIST_X86_SIMD="
1280     amd3dnow
1281     amd3dnowext
1282     avx
1283     avx2
1284     fma3
1285     fma4
1286     mmx
1287     mmxext
1288     sse
1289     sse2
1290     sse3
1291     sse4
1292     sse42
1293     ssse3
1294     xop
1295 "
1296
1297 ARCH_EXT_LIST_PPC="
1298     altivec
1299     dcbzl
1300     ldbrx
1301     ppc4xx
1302 "
1303
1304 ARCH_EXT_LIST_X86="
1305     $ARCH_EXT_LIST_X86_SIMD
1306     cpunop
1307     i686
1308 "
1309
1310 ARCH_EXT_LIST="
1311     $ARCH_EXT_LIST_ARM
1312     $ARCH_EXT_LIST_PPC
1313     $ARCH_EXT_LIST_X86
1314     loongson
1315     vis
1316 "
1317
1318 ARCH_FEATURES="
1319     aligned_stack
1320     fast_64bit
1321     fast_clz
1322     fast_cmov
1323     local_aligned_8
1324     local_aligned_16
1325 "
1326
1327 BUILTIN_LIST="
1328     atomic_cas_ptr
1329     machine_rw_barrier
1330     MemoryBarrier
1331     mm_empty
1332     rdtsc
1333     sync_val_compare_and_swap
1334 "
1335 HAVE_LIST_CMDLINE="
1336     inline_asm
1337     symver
1338     yasm
1339 "
1340
1341 HAVE_LIST_PUB="
1342     bigendian
1343     fast_unaligned
1344 "
1345
1346 HEADERS_LIST="
1347     alsa_asoundlib_h
1348     altivec_h
1349     arpa_inet_h
1350     cdio_paranoia_h
1351     cdio_paranoia_paranoia_h
1352     dev_bktr_ioctl_bt848_h
1353     dev_bktr_ioctl_meteor_h
1354     dev_ic_bt8xx_h
1355     dev_video_bktr_ioctl_bt848_h
1356     dev_video_meteor_ioctl_meteor_h
1357     direct_h
1358     dlfcn_h
1359     dxva_h
1360     gsm_h
1361     io_h
1362     mach_mach_time_h
1363     machine_ioctl_bt848_h
1364     machine_ioctl_meteor_h
1365     malloc_h
1366     poll_h
1367     sndio_h
1368     soundcard_h
1369     sys_mman_h
1370     sys_param_h
1371     sys_resource_h
1372     sys_select_h
1373     sys_soundcard_h
1374     sys_time_h
1375     sys_un_h
1376     sys_videoio_h
1377     unistd_h
1378     windows_h
1379     winsock2_h
1380 "
1381
1382 MATH_FUNCS="
1383     atanf
1384     atan2f
1385     cbrtf
1386     cosf
1387     exp2
1388     exp2f
1389     expf
1390     isinf
1391     isnan
1392     ldexpf
1393     llrint
1394     llrintf
1395     log2
1396     log2f
1397     log10f
1398     lrint
1399     lrintf
1400     powf
1401     rint
1402     round
1403     roundf
1404     sinf
1405     trunc
1406     truncf
1407 "
1408
1409 SYSTEM_FUNCS="
1410     aligned_malloc
1411     closesocket
1412     CommandLineToArgvW
1413     CryptGenRandom
1414     dlopen
1415     fcntl
1416     flt_lim
1417     fork
1418     getaddrinfo
1419     gethrtime
1420     getopt
1421     GetProcessAffinityMask
1422     GetProcessMemoryInfo
1423     GetProcessTimes
1424     getrusage
1425     getservbyport
1426     GetSystemTimeAsFileTime
1427     gettimeofday
1428     inet_aton
1429     isatty
1430     jack_port_get_latency_range
1431     localtime_r
1432     mach_absolute_time
1433     MapViewOfFile
1434     memalign
1435     mkstemp
1436     mmap
1437     mprotect
1438     nanosleep
1439     posix_memalign
1440     sched_getaffinity
1441     SetConsoleTextAttribute
1442     setmode
1443     setrlimit
1444     Sleep
1445     strerror_r
1446     strptime
1447     sysconf
1448     sysctl
1449     usleep
1450     VirtualAlloc
1451 "
1452
1453 TOOLCHAIN_FEATURES="
1454     asm_mod_q
1455     attribute_may_alias
1456     attribute_packed
1457     ebp_available
1458     ebx_available
1459     gnu_as
1460     ibm_asm
1461     inline_asm_labels
1462     pragma_deprecated
1463     symver_asm_label
1464     symver_gnu_asm
1465     vfp_args
1466     xform_asm
1467     xmm_clobbers
1468 "
1469
1470 TYPES_LIST="
1471     socklen_t
1472     struct_addrinfo
1473     struct_group_source_req
1474     struct_ip_mreq_source
1475     struct_ipv6_mreq
1476     struct_pollfd
1477     struct_rusage_ru_maxrss
1478     struct_sockaddr_in6
1479     struct_sockaddr_sa_len
1480     struct_sockaddr_storage
1481     struct_v4l2_frmivalenum_discrete
1482 "
1483
1484 HAVE_LIST="
1485     $ARCH_EXT_LIST
1486     $(add_suffix _external $ARCH_EXT_LIST)
1487     $(add_suffix _inline   $ARCH_EXT_LIST)
1488     $ARCH_FEATURES
1489     $ATOMICS_LIST
1490     $BUILTIN_LIST
1491     $HAVE_LIST_CMDLINE
1492     $HAVE_LIST_PUB
1493     $HEADERS_LIST
1494     $MATH_FUNCS
1495     $SYSTEM_FUNCS
1496     $THREADS_LIST
1497     $TOOLCHAIN_FEATURES
1498     $TYPES_LIST
1499     atomics_native
1500     dos_paths
1501     libc_msvcrt
1502     libdc1394_1
1503     libdc1394_2
1504     sdl
1505     threads
1506     vdpau_x11
1507     xlib
1508 "
1509
1510 # options emitted with CONFIG_ prefix but not available on the command line
1511 CONFIG_EXTRA="
1512     aandcttables
1513     ac3dsp
1514     audio_frame_queue
1515     cabac
1516     dsputil
1517     gcrypt
1518     golomb
1519     gplv3
1520     h263dsp
1521     h264chroma
1522     h264dsp
1523     h264pred
1524     h264qpel
1525     hpeldsp
1526     huffman
1527     intrax8
1528     lgplv3
1529     lpc
1530     mpegaudio
1531     mpegaudiodsp
1532     mpegvideo
1533     mpegvideoenc
1534     nettle
1535     rangecoder
1536     riffdec
1537     riffenc
1538     rtpdec
1539     rtpenc_chain
1540     sinewin
1541     tpeldsp
1542     videodsp
1543     vp3dsp
1544 "
1545
1546 CMDLINE_SELECT="
1547     $ARCH_EXT_LIST
1548     $CONFIG_LIST
1549     $HAVE_LIST_CMDLINE
1550     $THREADS_LIST
1551     asm
1552     cross_compile
1553     debug
1554     extra_warnings
1555     logging
1556     lto
1557     optimizations
1558 "
1559
1560 PATHS_LIST="
1561     bindir
1562     datadir
1563     docdir
1564     incdir
1565     libdir
1566     mandir
1567     prefix
1568     shlibdir
1569 "
1570
1571 CMDLINE_SET="
1572     $PATHS_LIST
1573     ar
1574     arch
1575     as
1576     build_suffix
1577     cc
1578     cpu
1579     cross_prefix
1580     dep_cc
1581     extra_version
1582     host_cc
1583     host_cflags
1584     host_ld
1585     host_ldflags
1586     host_libs
1587     host_os
1588     ld
1589     logfile
1590     malloc_prefix
1591     nm
1592     optflags
1593     pkg_config
1594     pkg_config_flags
1595     random_seed
1596     samples
1597     sysinclude
1598     sysroot
1599     target_exec
1600     target_os
1601     target_path
1602     target_samples
1603     toolchain
1604 "
1605
1606 CMDLINE_APPEND="
1607     extra_cflags
1608     host_cppflags
1609 "
1610
1611 # code dependency declarations
1612
1613 # architecture extensions
1614
1615 armv5te_deps="arm"
1616 armv6_deps="arm"
1617 armv6t2_deps="arm"
1618 neon_deps_any="aarch64 arm"
1619 vfp_deps_any="aarch64 arm"
1620 vfpv3_deps="vfp"
1621
1622 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1623
1624 altivec_deps="ppc"
1625 ppc4xx_deps="ppc"
1626
1627 cpunop_deps="i686"
1628 x86_64_select="i686"
1629 x86_64_suggest="fast_cmov"
1630
1631 amd3dnow_deps="mmx"
1632 amd3dnowext_deps="amd3dnow"
1633 i686_deps="x86"
1634 mmx_deps="x86"
1635 mmxext_deps="mmx"
1636 sse_deps="mmxext"
1637 sse2_deps="sse"
1638 sse3_deps="sse2"
1639 ssse3_deps="sse3"
1640 sse4_deps="ssse3"
1641 sse42_deps="sse4"
1642 avx_deps="sse42"
1643 xop_deps="avx"
1644 fma3_deps="avx"
1645 fma4_deps="avx"
1646 avx2_deps="avx"
1647
1648 mmx_external_deps="yasm"
1649 mmx_inline_deps="inline_asm"
1650 mmx_suggest="mmx_external mmx_inline"
1651
1652 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1653     eval dep=\$${ext}_deps
1654     eval ${ext}_external_deps='"${dep}_external"'
1655     eval ${ext}_inline_deps='"${dep}_inline"'
1656     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1657 done
1658
1659 aligned_stack_if_any="aarch64 ppc x86"
1660 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1661 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1662 fast_unaligned_if_any="aarch64 ppc x86"
1663
1664 need_memalign="altivec neon sse"
1665
1666 # system capabilities
1667 log2_deps="!libc_msvcrt"
1668
1669 symver_if_any="symver_asm_label symver_gnu_asm"
1670
1671 # threading support
1672 atomics_gcc_if="sync_val_compare_and_swap"
1673 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1674 atomics_win32_if="MemoryBarrier"
1675 atomics_native_if_any="$ATOMICS_LIST"
1676 w32threads_deps="atomics_native"
1677 threads_if_any="$THREADS_LIST"
1678
1679 # subsystems
1680 dct_select="rdft"
1681 error_resilience_select="dsputil"
1682 mdct_select="fft"
1683 rdft_select="fft"
1684 mpegaudio_select="mpegaudiodsp"
1685 mpegaudiodsp_select="dct"
1686 mpegvideo_select="dsputil hpeldsp videodsp"
1687 mpegvideoenc_select="dsputil mpegvideo"
1688
1689 # decoders / encoders
1690 aac_decoder_select="mdct sinewin"
1691 aac_encoder_select="audio_frame_queue mdct sinewin"
1692 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1693 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1694 ac3_encoder_select="mdct ac3dsp dsputil"
1695 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1696 aic_decoder_select="dsputil golomb"
1697 alac_encoder_select="lpc"
1698 als_decoder_select="dsputil"
1699 amrnb_decoder_select="lsp"
1700 amrwb_decoder_select="lsp"
1701 amv_decoder_select="sp5x_decoder"
1702 ape_decoder_select="dsputil"
1703 asv1_decoder_select="dsputil"
1704 asv1_encoder_select="dsputil"
1705 asv2_decoder_select="dsputil"
1706 asv2_encoder_select="dsputil"
1707 atrac1_decoder_select="mdct sinewin"
1708 atrac3_decoder_select="mdct"
1709 atrac3p_decoder_select="mdct sinewin"
1710 bink_decoder_select="dsputil hpeldsp"
1711 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1712 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1713 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1714 cllc_decoder_select="dsputil"
1715 comfortnoise_encoder_select="lpc"
1716 cook_decoder_select="dsputil mdct sinewin"
1717 cscd_decoder_select="lzo"
1718 cscd_decoder_suggest="zlib"
1719 dca_decoder_select="mdct"
1720 dnxhd_decoder_select="dsputil"
1721 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1722 dvvideo_decoder_select="dsputil"
1723 dvvideo_encoder_select="dsputil"
1724 dxa_decoder_deps="zlib"
1725 eac3_decoder_select="ac3_decoder"
1726 eac3_encoder_select="ac3_encoder"
1727 eamad_decoder_select="aandcttables dsputil mpegvideo"
1728 eatgq_decoder_select="aandcttables dsputil"
1729 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
1730 exr_decoder_deps="zlib"
1731 ffv1_decoder_select="golomb rangecoder"
1732 ffv1_encoder_select="rangecoder"
1733 ffvhuff_decoder_select="huffyuv_decoder"
1734 ffvhuff_encoder_select="huffyuv_encoder"
1735 fic_decoder_select="dsputil golomb"
1736 flac_decoder_select="golomb"
1737 flac_encoder_select="dsputil golomb lpc"
1738 flashsv_decoder_deps="zlib"
1739 flashsv_encoder_deps="zlib"
1740 flashsv2_decoder_deps="zlib"
1741 flv_decoder_select="h263_decoder"
1742 flv_encoder_select="h263_encoder"
1743 fourxm_decoder_select="dsputil"
1744 fraps_decoder_select="dsputil huffman"
1745 g2m_decoder_deps="zlib"
1746 g2m_decoder_select="dsputil"
1747 h261_decoder_select="error_resilience mpegvideo"
1748 h261_encoder_select="aandcttables mpegvideoenc"
1749 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1750 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1751 h263i_decoder_select="h263_decoder"
1752 h263p_encoder_select="h263_encoder"
1753 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1754 h264_decoder_suggest="error_resilience"
1755 hevc_decoder_select="cabac dsputil golomb videodsp"
1756 huffyuv_decoder_select="dsputil"
1757 huffyuv_encoder_select="dsputil huffman"
1758 iac_decoder_select="imc_decoder"
1759 imc_decoder_select="dsputil fft mdct sinewin"
1760 indeo3_decoder_select="hpeldsp"
1761 interplay_video_decoder_select="hpeldsp"
1762 jpegls_decoder_select="golomb mjpeg_decoder"
1763 jpegls_encoder_select="golomb"
1764 jv_decoder_select="dsputil"
1765 lagarith_decoder_select="dsputil"
1766 ljpeg_encoder_select="aandcttables mpegvideoenc"
1767 loco_decoder_select="golomb"
1768 mdec_decoder_select="dsputil error_resilience mpegvideo"
1769 metasound_decoder_select="lsp mdct sinewin"
1770 mimic_decoder_select="dsputil hpeldsp"
1771 mjpeg_decoder_select="dsputil hpeldsp"
1772 mjpeg_encoder_select="aandcttables mpegvideoenc"
1773 mjpegb_decoder_select="mjpeg_decoder"
1774 mlp_decoder_select="mlp_parser"
1775 motionpixels_decoder_select="dsputil"
1776 mp1_decoder_select="mpegaudio"
1777 mp1float_decoder_select="mpegaudio"
1778 mp2_decoder_select="mpegaudio"
1779 mp2float_decoder_select="mpegaudio"
1780 mp3_decoder_select="mpegaudio"
1781 mp3adu_decoder_select="mpegaudio"
1782 mp3adufloat_decoder_select="mpegaudio"
1783 mp3float_decoder_select="mpegaudio"
1784 mp3on4_decoder_select="mpegaudio"
1785 mp3on4float_decoder_select="mpegaudio"
1786 mpc7_decoder_select="dsputil mpegaudiodsp"
1787 mpc8_decoder_select="mpegaudiodsp"
1788 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1789 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1790 mpeg1video_decoder_select="error_resilience mpegvideo"
1791 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1792 mpeg2video_decoder_select="error_resilience mpegvideo"
1793 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1794 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1795 mpeg4_encoder_select="h263_encoder"
1796 msmpeg4v1_decoder_select="h263_decoder"
1797 msmpeg4v2_decoder_select="h263_decoder"
1798 msmpeg4v2_encoder_select="h263_encoder"
1799 msmpeg4v3_decoder_select="h263_decoder"
1800 msmpeg4v3_encoder_select="h263_encoder"
1801 mss2_decoder_select="error_resilience vc1_decoder"
1802 mxpeg_decoder_select="mjpeg_decoder"
1803 nellymoser_decoder_select="mdct sinewin"
1804 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1805 nuv_decoder_select="dsputil lzo"
1806 png_decoder_deps="zlib"
1807 png_encoder_deps="zlib"
1808 png_encoder_select="dsputil"
1809 prores_decoder_select="dsputil"
1810 prores_encoder_select="dsputil"
1811 qcelp_decoder_select="lsp"
1812 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1813 ra_144_encoder_select="audio_frame_queue lpc"
1814 ralf_decoder_select="golomb"
1815 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1816 rv10_encoder_select="h263_encoder"
1817 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1818 rv20_encoder_select="h263_encoder"
1819 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1820 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1821 shorten_decoder_select="golomb"
1822 sipr_decoder_select="lsp"
1823 sp5x_decoder_select="mjpeg_decoder"
1824 svq1_decoder_select="hpeldsp"
1825 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1826 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1827 svq3_decoder_suggest="zlib"
1828 tak_decoder_select="dsputil"
1829 theora_decoder_select="vp3_decoder"
1830 thp_decoder_select="mjpeg_decoder"
1831 tiff_decoder_suggest="zlib"
1832 tiff_encoder_suggest="zlib"
1833 truehd_decoder_select="mlp_decoder"
1834 truemotion2_decoder_select="dsputil"
1835 truespeech_decoder_select="dsputil"
1836 tscc_decoder_deps="zlib"
1837 twinvq_decoder_select="mdct lsp sinewin"
1838 utvideo_decoder_select="dsputil"
1839 utvideo_encoder_select="dsputil huffman"
1840 vble_decoder_select="dsputil"
1841 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1842 vc1image_decoder_select="vc1_decoder"
1843 vorbis_decoder_select="mdct"
1844 vorbis_encoder_select="mdct"
1845 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1846 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1847 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1848 vp6a_decoder_select="vp6_decoder"
1849 vp6f_decoder_select="vp6_decoder"
1850 vp7_decoder_select="h264pred videodsp"
1851 vp8_decoder_select="h264pred videodsp"
1852 vp9_decoder_select="videodsp"
1853 webp_decoder_select="vp8_decoder"
1854 wmapro_decoder_select="mdct sinewin"
1855 wmav1_decoder_select="mdct sinewin"
1856 wmav1_encoder_select="mdct sinewin"
1857 wmav2_decoder_select="mdct sinewin"
1858 wmav2_encoder_select="mdct sinewin"
1859 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1860 wmv1_decoder_select="h263_decoder"
1861 wmv1_encoder_select="h263_encoder"
1862 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1863 wmv2_encoder_select="h263_encoder"
1864 wmv3_decoder_select="vc1_decoder"
1865 wmv3image_decoder_select="wmv3_decoder"
1866 zerocodec_decoder_deps="zlib"
1867 zlib_decoder_deps="zlib"
1868 zlib_encoder_deps="zlib"
1869 zmbv_decoder_deps="zlib"
1870 zmbv_encoder_deps="zlib"
1871
1872 # hardware accelerators
1873 dxva2_deps="dxva2api_h"
1874 vaapi_deps="va_va_h"
1875 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1876 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1877 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1878
1879 h263_vaapi_hwaccel_deps="vaapi"
1880 h263_vaapi_hwaccel_select="h263_decoder"
1881 h263_vdpau_hwaccel_deps="vdpau"
1882 h263_vdpau_hwaccel_select="h263_decoder"
1883 h264_dxva2_hwaccel_deps="dxva2"
1884 h264_dxva2_hwaccel_select="h264_decoder"
1885 h264_vaapi_hwaccel_deps="vaapi"
1886 h264_vaapi_hwaccel_select="h264_decoder"
1887 h264_vda_hwaccel_deps="vda"
1888 h264_vda_hwaccel_select="h264_decoder"
1889 h264_vdpau_hwaccel_deps="vdpau"
1890 h264_vdpau_hwaccel_select="h264_decoder"
1891 mpeg1_vdpau_hwaccel_deps="vdpau"
1892 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1893 mpeg2_dxva2_hwaccel_deps="dxva2"
1894 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1895 mpeg2_vaapi_hwaccel_deps="vaapi"
1896 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1897 mpeg2_vdpau_hwaccel_deps="vdpau"
1898 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1899 mpeg4_vaapi_hwaccel_deps="vaapi"
1900 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1901 mpeg4_vdpau_hwaccel_deps="vdpau"
1902 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1903 vc1_dxva2_hwaccel_deps="dxva2"
1904 vc1_dxva2_hwaccel_select="vc1_decoder"
1905 vc1_vaapi_hwaccel_deps="vaapi"
1906 vc1_vaapi_hwaccel_select="vc1_decoder"
1907 vc1_vdpau_hwaccel_deps="vdpau"
1908 vc1_vdpau_hwaccel_select="vc1_decoder"
1909 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1910 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1911 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1912
1913 # parsers
1914 h264_parser_select="h264_decoder"
1915 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1916 mpegvideo_parser_select="error_resilience mpegvideo"
1917 vc1_parser_select="mpegvideo"
1918
1919 # external libraries
1920 libfaac_encoder_deps="libfaac"
1921 libfaac_encoder_select="audio_frame_queue"
1922 libfdk_aac_decoder_deps="libfdk_aac"
1923 libfdk_aac_encoder_deps="libfdk_aac"
1924 libfdk_aac_encoder_select="audio_frame_queue"
1925 libgsm_decoder_deps="libgsm"
1926 libgsm_encoder_deps="libgsm"
1927 libgsm_ms_decoder_deps="libgsm"
1928 libgsm_ms_encoder_deps="libgsm"
1929 libilbc_decoder_deps="libilbc"
1930 libilbc_encoder_deps="libilbc"
1931 libmp3lame_encoder_deps="libmp3lame"
1932 libmp3lame_encoder_select="audio_frame_queue"
1933 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1934 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1935 libopencore_amrnb_encoder_select="audio_frame_queue"
1936 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1937 libopenjpeg_decoder_deps="libopenjpeg"
1938 libopenjpeg_encoder_deps="libopenjpeg"
1939 libopus_decoder_deps="libopus"
1940 libopus_encoder_deps="libopus"
1941 libopus_encoder_select="audio_frame_queue"
1942 libschroedinger_decoder_deps="libschroedinger"
1943 libschroedinger_encoder_deps="libschroedinger"
1944 libspeex_decoder_deps="libspeex"
1945 libspeex_encoder_deps="libspeex"
1946 libspeex_encoder_select="audio_frame_queue"
1947 libtheora_encoder_deps="libtheora"
1948 libvo_aacenc_encoder_deps="libvo_aacenc"
1949 libvo_aacenc_encoder_select="audio_frame_queue"
1950 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1951 libvorbis_encoder_deps="libvorbis"
1952 libvorbis_encoder_select="audio_frame_queue"
1953 libvpx_vp8_decoder_deps="libvpx"
1954 libvpx_vp8_encoder_deps="libvpx"
1955 libvpx_vp9_decoder_deps="libvpx"
1956 libvpx_vp9_encoder_deps="libvpx"
1957 libwavpack_encoder_deps="libwavpack"
1958 libwebp_encoder_deps="libwebp"
1959 libx264_encoder_deps="libx264"
1960 libx265_encoder_deps="libx265"
1961 libxavs_encoder_deps="libxavs"
1962 libxvid_encoder_deps="libxvid"
1963
1964 # demuxers / muxers
1965 ac3_demuxer_select="ac3_parser"
1966 asf_demuxer_select="riffdec"
1967 asf_muxer_select="riffenc"
1968 asf_stream_muxer_select="asf_muxer"
1969 avi_demuxer_select="riffdec"
1970 avi_muxer_select="riffenc"
1971 avisynth_demuxer_deps="avisynth"
1972 avisynth_demuxer_select="riffdec"
1973 caf_demuxer_select="riffdec"
1974 dirac_demuxer_select="dirac_parser"
1975 dxa_demuxer_select="riffdec"
1976 eac3_demuxer_select="ac3_parser"
1977 f4v_muxer_select="mov_muxer"
1978 flac_demuxer_select="flac_parser"
1979 hds_muxer_select="flv_muxer"
1980 hls_muxer_select="mpegts_muxer"
1981 ipod_muxer_select="mov_muxer"
1982 ismv_muxer_select="mov_muxer"
1983 matroska_audio_muxer_select="matroska_muxer"
1984 matroska_demuxer_select="riffdec"
1985 matroska_demuxer_suggest="bzlib lzo zlib"
1986 matroska_muxer_select="riffenc"
1987 mmf_muxer_select="riffenc"
1988 mov_demuxer_select="riffdec"
1989 mov_demuxer_suggest="zlib"
1990 mov_muxer_select="riffenc rtpenc_chain"
1991 mp3_demuxer_select="mpegaudio_parser"
1992 mp4_muxer_select="mov_muxer"
1993 mpegts_muxer_select="adts_muxer latm_muxer"
1994 mpegtsraw_demuxer_select="mpegts_demuxer"
1995 mxf_d10_muxer_select="mxf_muxer"
1996 nut_muxer_select="riffenc"
1997 nuv_demuxer_select="riffdec"
1998 ogg_demuxer_select="golomb"
1999 psp_muxer_select="mov_muxer"
2000 rtp_demuxer_select="sdp_demuxer"
2001 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2002 rtsp_demuxer_select="http_protocol rtpdec"
2003 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2004 sap_demuxer_select="sdp_demuxer"
2005 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2006 sdp_demuxer_select="rtpdec"
2007 smoothstreaming_muxer_select="ismv_muxer"
2008 spdif_muxer_select="aac_parser"
2009 tak_demuxer_select="tak_parser"
2010 tg2_muxer_select="mov_muxer"
2011 tgp_muxer_select="mov_muxer"
2012 w64_demuxer_select="wav_demuxer"
2013 wav_demuxer_select="riffdec"
2014 wav_muxer_select="riffenc"
2015 webm_muxer_select="riffenc"
2016 wtv_demuxer_select="riffdec"
2017 xmv_demuxer_select="riffdec"
2018 xwma_demuxer_select="riffdec"
2019
2020 # indevs / outdevs
2021 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2022 alsa_outdev_deps="alsa_asoundlib_h"
2023 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2024 dv1394_indev_deps="dv1394"
2025 dv1394_indev_select="dv_demuxer"
2026 fbdev_indev_deps="linux_fb_h"
2027 jack_indev_deps="jack_jack_h pthreads"
2028 libcdio_indev_deps="libcdio"
2029 libdc1394_indev_deps="libdc1394"
2030 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2031 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2032 pulse_indev_deps="libpulse"
2033 sndio_indev_deps="sndio_h"
2034 sndio_outdev_deps="sndio_h"
2035 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2036 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2037 vfwcap_indev_extralibs="-lavicap32"
2038 x11grab_indev_deps="x11grab XShmCreateImage"
2039
2040 # protocols
2041 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2042 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2043 ffrtmpcrypt_protocol_select="tcp_protocol"
2044 ffrtmphttp_protocol_deps="!librtmp_protocol"
2045 ffrtmphttp_protocol_select="http_protocol"
2046 gopher_protocol_select="network"
2047 http_protocol_select="tcp_protocol"
2048 httpproxy_protocol_select="tcp_protocol"
2049 https_protocol_select="tls_protocol"
2050 librtmp_protocol_deps="librtmp"
2051 librtmpe_protocol_deps="librtmp"
2052 librtmps_protocol_deps="librtmp"
2053 librtmpt_protocol_deps="librtmp"
2054 librtmpte_protocol_deps="librtmp"
2055 mmsh_protocol_select="http_protocol"
2056 mmst_protocol_select="network"
2057 rtmp_protocol_deps="!librtmp_protocol"
2058 rtmp_protocol_select="tcp_protocol"
2059 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2060 rtmps_protocol_deps="!librtmp_protocol"
2061 rtmps_protocol_select="tls_protocol"
2062 rtmpt_protocol_select="ffrtmphttp_protocol"
2063 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2064 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2065 rtp_protocol_select="udp_protocol"
2066 sctp_protocol_deps="struct_sctp_event_subscribe"
2067 sctp_protocol_select="network"
2068 srtp_protocol_select="rtp_protocol"
2069 tcp_protocol_select="network"
2070 tls_protocol_deps_any="openssl gnutls"
2071 tls_protocol_select="tcp_protocol"
2072 udp_protocol_select="network"
2073 unix_protocol_deps="sys_un_h"
2074 unix_protocol_select="network"
2075
2076 # filters
2077 blackframe_filter_deps="gpl"
2078 boxblur_filter_deps="gpl"
2079 cropdetect_filter_deps="gpl"
2080 delogo_filter_deps="gpl"
2081 drawtext_filter_deps="libfreetype"
2082 frei0r_filter_deps="frei0r dlopen"
2083 frei0r_filter_extralibs='$ldl'
2084 frei0r_src_filter_deps="frei0r dlopen"
2085 frei0r_src_filter_extralibs='$ldl'
2086 hqdn3d_filter_deps="gpl"
2087 interlace_filter_deps="gpl"
2088 ocv_filter_deps="libopencv"
2089 resample_filter_deps="avresample"
2090 scale_filter_deps="swscale"
2091
2092 # examples
2093 avcodec_example_deps="avcodec avutil"
2094 filter_audio_example_deps="avfilter avutil"
2095 metadata_example_deps="avformat avutil"
2096 output_example_deps="avcodec avformat avutil swscale"
2097 transcode_aac_example_deps="avcodec avformat avresample"
2098
2099 # libraries
2100 avcodec_deps="avutil"
2101 avdevice_deps="avutil avcodec avformat"
2102 avfilter_deps="avutil"
2103 avformat_deps="avutil avcodec"
2104 avresample_deps="avutil"
2105 swscale_deps="avutil"
2106
2107 # programs
2108 avconv_deps="avcodec avfilter avformat avresample swscale"
2109 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2110                fps_filter null_filter resample_filter scale_filter
2111                setpts_filter trim_filter"
2112 avplay_deps="avcodec avformat avresample swscale sdl"
2113 avplay_libs='$sdl_libs'
2114 avplay_select="rdft"
2115 avprobe_deps="avcodec avformat"
2116 avserver_deps="avformat fork !shared"
2117 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2118
2119 # documentation
2120 pod2man_deps="doc"
2121 texi2html_deps="doc"
2122
2123 # default parameters
2124
2125 logfile="config.log"
2126
2127 # installation paths
2128 prefix_default="/usr/local"
2129 bindir_default='${prefix}/bin'
2130 datadir_default='${prefix}/share/avconv'
2131 docdir_default='${prefix}/share/doc/libav'
2132 incdir_default='${prefix}/include'
2133 libdir_default='${prefix}/lib'
2134 mandir_default='${prefix}/share/man'
2135 shlibdir_default="$libdir_default"
2136
2137 # toolchain
2138 ar_default="ar"
2139 cc_default="gcc"
2140 host_cc_default="gcc"
2141 cp_f="cp -f"
2142 ln_s="ln -s -f"
2143 nm_default="nm -g"
2144 objformat="elf"
2145 pkg_config_default=pkg-config
2146 ranlib="ranlib"
2147 strip="strip"
2148 yasmexe="yasm"
2149
2150 nogas=":"
2151
2152 # machine
2153 arch_default=$(uname -m)
2154 cpu="generic"
2155
2156 # OS
2157 target_os_default=$(tolower $(uname -s))
2158 host_os=$target_os_default
2159
2160 # configurable options
2161 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2162
2163 enable asm
2164 enable debug
2165 enable doc
2166 enable optimizations
2167 enable safe_bitstream_reader
2168 enable static
2169 enable swscale_alpha
2170
2171 # By default, enable only those hwaccels that have no external dependencies.
2172 enable dxva2 vdpau
2173
2174 # build settings
2175 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2176 LIBPREF="lib"
2177 LIBSUF=".a"
2178 FULLNAME='$(NAME)$(BUILDSUF)'
2179 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2180 SLIBPREF="lib"
2181 SLIBSUF=".so"
2182 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2183 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2184 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2185 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2186 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2187 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2188
2189 asflags_filter=echo
2190 cflags_filter=echo
2191 ldflags_filter=echo
2192
2193 AS_C='-c'
2194 AS_O='-o $@'
2195 CC_C='-c'
2196 CC_E='-E -o $@'
2197 CC_O='-o $@'
2198 LD_O='-o $@'
2199 LD_LIB='-l%'
2200 LD_PATH='-L'
2201 HOSTCC_C='-c'
2202 HOSTCC_E='-E -o $@'
2203 HOSTCC_O='-o $@'
2204 HOSTLD_O='-o $@'
2205
2206 host_libs='-lm'
2207 host_cflags_filter=echo
2208 host_ldflags_filter=echo
2209
2210 target_path='$(CURDIR)'
2211
2212 # since the object filename is not given with the -MM flag, the compiler
2213 # is only able to print the basename, and we must add the path ourselves
2214 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2215 DEPFLAGS='-MM'
2216
2217 # find source path
2218 if test -f configure; then
2219     source_path=.
2220 else
2221     source_path=$(cd $(dirname "$0"); pwd)
2222     echo "$source_path" | grep -q '[[:blank:]]' &&
2223         die "Out of tree builds are impossible with whitespace in source path."
2224     test -e "$source_path/config.h" &&
2225         die "Out of tree builds are impossible with config.h in source dir."
2226 fi
2227
2228 for v in "$@"; do
2229     r=${v#*=}
2230     l=${v%"$r"}
2231     r=$(sh_quote "$r")
2232     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2233 done
2234
2235 find_things(){
2236     thing=$1
2237     pattern=$2
2238     file=$source_path/$3
2239     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2240 }
2241
2242 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2243 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2244 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2245 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2246 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2247 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2248 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2249 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2250 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2251 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2252 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2253
2254 ALL_COMPONENTS="
2255     $BSF_LIST
2256     $DECODER_LIST
2257     $DEMUXER_LIST
2258     $ENCODER_LIST
2259     $FILTER_LIST
2260     $HWACCEL_LIST
2261     $INDEV_LIST
2262     $MUXER_LIST
2263     $OUTDEV_LIST
2264     $PARSER_LIST
2265     $PROTOCOL_LIST
2266 "
2267
2268 for n in $COMPONENT_LIST; do
2269     v=$(toupper ${n%s})_LIST
2270     eval enable \$$v
2271     eval ${n}_if_any="\$$v"
2272 done
2273
2274 enable $ARCH_EXT_LIST
2275
2276 die_unknown(){
2277     echo "Unknown option \"$1\"."
2278     echo "See $0 --help for available options."
2279     exit 1
2280 }
2281
2282 print_3_columns() {
2283     cat | tr ' ' '\n' | sort | pr -r -3 -t
2284 }
2285
2286 show_list() {
2287     suffix=_$1
2288     shift
2289     echo $* | sed s/$suffix//g | print_3_columns
2290     exit 0
2291 }
2292
2293 rand_list(){
2294     IFS=', '
2295     set -- $*
2296     unset IFS
2297     for thing; do
2298         comp=${thing%:*}
2299         prob=${thing#$comp}
2300         prob=${prob#:}
2301         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2302         echo "prob ${prob:-0.5}"
2303         printf '%s\n' $comp
2304     done
2305 }
2306
2307 do_random(){
2308     action=$1
2309     shift
2310     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2311     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2312 }
2313
2314 for opt do
2315     optval="${opt#*=}"
2316     case "$opt" in
2317         --extra-ldflags=*)
2318             add_ldflags $optval
2319         ;;
2320         --extra-libs=*)
2321             add_extralibs $optval
2322         ;;
2323         --disable-devices)
2324             disable $INDEV_LIST $OUTDEV_LIST
2325         ;;
2326         --enable-debug=*)
2327             debuglevel="$optval"
2328         ;;
2329         --disable-programs)
2330             disable $PROGRAM_LIST
2331         ;;
2332         --disable-everything)
2333             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2334         ;;
2335         --disable-all)
2336             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2337             disable $LIBRARY_LIST $PROGRAM_LIST doc
2338         ;;
2339         --enable-random|--disable-random)
2340             action=${opt%%-random}
2341             do_random ${action#--} $COMPONENT_LIST
2342         ;;
2343         --enable-random=*|--disable-random=*)
2344             action=${opt%%-random=*}
2345             do_random ${action#--} $optval
2346         ;;
2347         --enable-*=*|--disable-*=*)
2348             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2349             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2350             eval list=\$$(toupper $thing)_LIST
2351             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2352             $action $(filter "$name" $list)
2353         ;;
2354         --enable-?*|--disable-?*)
2355             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2356             if is_in $option $COMPONENT_LIST; then
2357                 test $action = disable && action=unset
2358                 eval $action \$$(toupper ${option%s})_LIST
2359             elif is_in $option $CMDLINE_SELECT; then
2360                 $action $option
2361             else
2362                 die_unknown $opt
2363             fi
2364         ;;
2365         --list-*)
2366             NAME="${opt#--list-}"
2367             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2368             NAME=${NAME%s}
2369             eval show_list $NAME \$$(toupper $NAME)_LIST
2370         ;;
2371         --help|-h) show_help
2372         ;;
2373         *)
2374             optname="${opt%%=*}"
2375             optname="${optname#--}"
2376             optname=$(echo "$optname" | sed 's/-/_/g')
2377             if is_in $optname $CMDLINE_SET; then
2378                 eval $optname='$optval'
2379             elif is_in $optname $CMDLINE_APPEND; then
2380                 append $optname "$optval"
2381             else
2382                 die_unknown $opt
2383             fi
2384         ;;
2385     esac
2386 done
2387
2388 disabled logging && logfile=/dev/null
2389
2390 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2391 set >> $logfile
2392
2393 test -n "$cross_prefix" && enable cross_compile
2394
2395 if enabled cross_compile; then
2396     test -n "$arch" && test -n "$target_os" ||
2397         die "Must specify target arch and OS when cross-compiling"
2398 fi
2399
2400 ar_default="${cross_prefix}${ar_default}"
2401 cc_default="${cross_prefix}${cc_default}"
2402 nm_default="${cross_prefix}${nm_default}"
2403 pkg_config_default="${cross_prefix}${pkg_config_default}"
2404 ranlib="${cross_prefix}${ranlib}"
2405 strip="${cross_prefix}${strip}"
2406
2407 sysinclude_default="${sysroot}/usr/include"
2408
2409 case "$toolchain" in
2410     clang-asan)
2411         cc_default="clang"
2412         add_cflags  -fsanitize=address
2413         add_ldflags -fsanitize=address
2414     ;;
2415     clang-tsan)
2416         cc_default="clang"
2417         add_cflags  -fsanitize=thread -pie
2418         add_ldflags -fsanitize=thread -pie
2419     ;;
2420     clang-usan)
2421         cc_default="clang"
2422         add_cflags  -fsanitize=undefined
2423         add_ldflags -fsanitize=undefined
2424     ;;
2425     gcc-asan)
2426         cc_default="gcc"
2427         add_cflags  -fsanitize=address
2428         add_ldflags -fsanitize=address
2429     ;;
2430     gcc-tsan)
2431         cc_default="gcc"
2432         add_cflags  -fsanitize=thread -pie -fPIC
2433         add_ldflags -fsanitize=thread -pie -fPIC
2434     ;;
2435     gcc-usan)
2436         cc_default="gcc"
2437         add_cflags  -fsanitize=undefined
2438         add_ldflags -fsanitize=undefined
2439     ;;
2440     valgrind-massif)
2441         target_exec_default="valgrind"
2442         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2443     ;;
2444     valgrind-memcheck)
2445         target_exec_default="valgrind"
2446         target_exec_args="--track-origins=yes --leak-check=full"
2447     ;;
2448     msvc)
2449         # Check whether the current MSVC version needs the C99 converter.
2450         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2451         # support enough of C99 to build libav. Default to the new
2452         # behaviour if the regexp was unable to match anything, since this
2453         # successfully parses the version number of existing supported
2454         # versions that require the converter (MSVC 2010 and 2012).
2455         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2456         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2457             cc_default="cl"
2458         else
2459             cc_default="c99wrap cl"
2460         fi
2461         ld_default="link"
2462         nm_default="dumpbin -symbols"
2463         ar_default="lib"
2464         target_os_default="win32"
2465         # Use a relative path for TMPDIR. This makes sure all the
2466         # ffconf temp files are written with a relative path, avoiding
2467         # issues with msys/win32 path conversion for MSVC parameters
2468         # such as -Fo<file> or -out:<file>.
2469         TMPDIR=.
2470     ;;
2471     icl)
2472         cc_default="icl"
2473         ld_default="xilink"
2474         nm_default="dumpbin -symbols"
2475         ar_default="xilib"
2476         target_os_default="win32"
2477         TMPDIR=.
2478     ;;
2479     gcov)
2480         add_cflags  -fprofile-arcs -ftest-coverage
2481         add_ldflags -fprofile-arcs -ftest-coverage
2482     ;;
2483     hardened)
2484         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2485         add_ldflags -Wl,-z,relro -Wl,-z,now
2486     ;;
2487     ?*)
2488         die "Unknown toolchain $toolchain"
2489     ;;
2490 esac
2491
2492 set_default arch cc pkg_config sysinclude target_exec target_os
2493 enabled cross_compile || host_cc_default=$cc
2494 set_default host_cc
2495
2496 if ! $pkg_config --version >/dev/null 2>&1; then
2497     warn "$pkg_config not found, library detection may fail."
2498     pkg_config=false
2499 fi
2500
2501 exesuf() {
2502     case $1 in
2503         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2504     esac
2505 }
2506
2507 EXESUF=$(exesuf $target_os)
2508 HOSTEXESUF=$(exesuf $host_os)
2509
2510 # set temporary file name
2511 : ${TMPDIR:=$TEMPDIR}
2512 : ${TMPDIR:=$TMP}
2513 : ${TMPDIR:=/tmp}
2514
2515 if ! check_cmd mktemp -u XXXXXX; then
2516     # simple replacement for missing mktemp
2517     # NOT SAFE FOR GENERAL USE
2518     mktemp(){
2519         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2520     }
2521 fi
2522
2523 tmpfile(){
2524     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2525         (set -C; exec > $tmp) 2>/dev/null ||
2526         die "Unable to create temporary file in $TMPDIR."
2527     append TMPFILES $tmp
2528     eval $1=$tmp
2529 }
2530
2531 trap 'rm -f -- $TMPFILES' EXIT
2532
2533 tmpfile TMPASM .asm
2534 tmpfile TMPC   .c
2535 tmpfile TMPE   $EXESUF
2536 tmpfile TMPH   .h
2537 tmpfile TMPO   .o
2538 tmpfile TMPS   .S
2539 tmpfile TMPSH  .sh
2540 tmpfile TMPV   .ver
2541
2542 unset -f mktemp
2543
2544 chmod +x $TMPE
2545
2546 # make sure we can execute files in $TMPDIR
2547 cat > $TMPSH 2>> $logfile <<EOF
2548 #! /bin/sh
2549 EOF
2550 chmod +x $TMPSH >> $logfile 2>&1
2551 if ! $TMPSH >> $logfile 2>&1; then
2552     cat <<EOF
2553 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2554 variable to another directory and make sure that it is not mounted noexec.
2555 EOF
2556     die "Sanity test failed."
2557 fi
2558
2559 ccc_flags(){
2560     for flag; do
2561         case $flag in
2562             -std=c99)           echo -c99                       ;;
2563             -mcpu=*)            echo -arch ${flag#*=}           ;;
2564             -mieee)             echo -ieee                      ;;
2565             -O*|-fast)          echo $flag                      ;;
2566             -fno-math-errno)    echo -assume nomath_errno       ;;
2567             -g)                 echo -g3                        ;;
2568             -Wall)              echo -msg_enable level2         ;;
2569             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2570             -Wl,*)              echo $flag                      ;;
2571             -f*|-W*)                                            ;;
2572             *)                  echo $flag                      ;;
2573         esac
2574    done
2575 }
2576
2577 cparser_flags(){
2578     for flag; do
2579         case $flag in
2580             -Wno-switch)             echo -Wno-switch-enum ;;
2581             -Wno-format-zero-length) ;;
2582             -Wdisabled-optimization) ;;
2583             -Wno-pointer-sign)       echo -Wno-other ;;
2584             *)                       echo $flag ;;
2585         esac
2586     done
2587 }
2588
2589 msvc_common_flags(){
2590     for flag; do
2591         case $flag in
2592             # In addition to specifying certain flags under the compiler
2593             # specific filters, they must be specified here as well or else the
2594             # generic catch all at the bottom will print the original flag.
2595             -Wall)                ;;
2596             -std=c99)             ;;
2597             # Common flags
2598             -fomit-frame-pointer) ;;
2599             -g)                   echo -Z7 ;;
2600             -fno-math-errno)      ;;
2601             -fno-common)          ;;
2602             -fno-signed-zeros)    ;;
2603             -fPIC)                ;;
2604             -mthumb)              ;;
2605             -march=*)             ;;
2606             -lz)                  echo zlib.lib ;;
2607             -lavifil32)           echo vfw32.lib ;;
2608             -lavicap32)           echo vfw32.lib user32.lib ;;
2609             -l*)                  echo ${flag#-l}.lib ;;
2610             *)                    echo $flag ;;
2611         esac
2612     done
2613 }
2614
2615 msvc_flags(){
2616     msvc_common_flags "$@"
2617     for flag; do
2618         case $flag in
2619             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2620                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2621                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2622                                        -wd4273 ;;
2623         esac
2624     done
2625 }
2626
2627 icl_flags(){
2628     msvc_common_flags "$@"
2629     for flag; do
2630         case $flag in
2631             # Despite what Intel's documentation says -Wall, which is supported
2632             # on Windows, does enable remarks so disable them here.
2633             -Wall)                echo $flag -Qdiag-disable:remark ;;
2634             -std=c99)             echo -Qstd=c99 ;;
2635         esac
2636     done
2637 }
2638
2639 pgi_flags(){
2640     for flag; do
2641         case $flag in
2642             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2643             -fomit-frame-pointer) echo -Mnoframe ;;
2644             -g)                   echo -gopt ;;
2645             *)                    echo $flag ;;
2646         esac
2647     done
2648 }
2649
2650 suncc_flags(){
2651     for flag; do
2652         case $flag in
2653             -march=*|-mcpu=*)
2654                 case "${flag#*=}" in
2655                     native)                   echo -xtarget=native       ;;
2656                     v9|niagara)               echo -xarch=sparc          ;;
2657                     ultrasparc)               echo -xarch=sparcvis       ;;
2658                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2659                     i586|pentium)             echo -xchip=pentium        ;;
2660                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2661                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2662                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2663                     pentium4*)          echo -xtarget=pentium4           ;;
2664                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2665                     *-sse3)             echo -xarch=sse3                 ;;
2666                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2667                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2668                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2669                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2670                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2671                     k8|opteron|athlon64|athlon-fx)
2672                                                echo -xarch=sse2a         ;;
2673                     athlon*)                   echo -xarch=pentium_proa  ;;
2674                 esac
2675                 ;;
2676             -std=c99)             echo -xc99              ;;
2677             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2678             -fPIC)                echo -KPIC -xcode=pic32 ;;
2679             -W*,*)                echo $flag              ;;
2680             -f*-*|-W*|-mimpure-text)                      ;;
2681             -shared)              echo -G                 ;;
2682             *)                    echo $flag              ;;
2683         esac
2684     done
2685 }
2686
2687 tms470_flags(){
2688     for flag; do
2689         case $flag in
2690             -march=*|-mcpu=*)
2691                 case "${flag#*=}" in
2692                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2693                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2694                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2695                     armv6*|arm11*)          echo -mv=6   ;;
2696                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2697                                             echo -mv=5e  ;;
2698                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2699                 esac
2700                 ;;
2701             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2702             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2703             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2704             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2705             -msoft-float)   echo --float_support=vfplib       ;;
2706             -O[0-3]|-mf=*)  echo $flag                        ;;
2707             -g)             echo -g -mn                       ;;
2708             -pds=*)         echo $flag                        ;;
2709             -D*|-I*)        echo $flag                        ;;
2710             --gcc|--abi=*)  echo $flag                        ;;
2711             -me)            echo $flag                        ;;
2712         esac
2713     done
2714 }
2715
2716 probe_cc(){
2717     pfx=$1
2718     _cc=$2
2719
2720     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2721     unset _ld_o _ldflags _ld_lib _ld_path
2722     unset _depflags _DEPCMD _DEPFLAGS
2723     _flags_filter=echo
2724
2725     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2726         _type=llvm_gcc
2727         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2728         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2729         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2730         _cflags_speed='-O3'
2731         _cflags_size='-Os'
2732     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2733         _type=gcc
2734         gcc_version=$($_cc --version | head -n1)
2735         gcc_basever=$($_cc -dumpversion)
2736         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2737         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2738         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2739         if ! $_cc -dumpversion | grep -q '^2\.'; then
2740             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2741         fi
2742         _cflags_speed='-O3'
2743         _cflags_size='-Os'
2744     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2745         _type=icc
2746         _ident=$($_cc --version | head -n1)
2747         _depflags='-MMD'
2748         _cflags_speed='-O3'
2749         _cflags_size='-Os'
2750         _cflags_noopt='-O1'
2751     elif $_cc -v 2>&1 | grep -q xlc; then
2752         _type=xlc
2753         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2754         _cflags_speed='-O5'
2755         _cflags_size='-O5 -qcompact'
2756     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2757         _type=ccc
2758         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2759         _DEPFLAGS='-M'
2760         _cflags_speed='-fast'
2761         _cflags_size='-O1'
2762         _flags_filter=ccc_flags
2763     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2764         test -d "$sysroot" || die "No valid sysroot specified."
2765         _type=armcc
2766         _ident=$($_cc --vsn | head -n1)
2767         armcc_conf="$PWD/armcc.conf"
2768         $_cc --arm_linux_configure                 \
2769              --arm_linux_config_file="$armcc_conf" \
2770              --configure_sysroot="$sysroot"        \
2771              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2772              die "Error creating armcc configuration file."
2773         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2774         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2775         as_default="${cross_prefix}gcc"
2776         _depflags='-MMD'
2777         _cflags_speed='-O3'
2778         _cflags_size='-Os'
2779     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2780         _type=tms470
2781         _ident=$($_cc -version | head -n1 | tr -s ' ')
2782         _flags='--gcc --abi=eabi -me'
2783         _cc_e='-ppl -fe=$@'
2784         _cc_o='-fe=$@'
2785         _depflags='-ppa -ppd=$(@:.o=.d)'
2786         _cflags_speed='-O3 -mf=5'
2787         _cflags_size='-O3 -mf=2'
2788         _flags_filter=tms470_flags
2789     elif $_cc -v 2>&1 | grep -q clang; then
2790         _type=clang
2791         _ident=$($_cc --version | head -n1)
2792         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2793         _cflags_speed='-O3'
2794         _cflags_size='-Os'
2795     elif $_cc -V 2>&1 | grep -q Sun; then
2796         _type=suncc
2797         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2798         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2799         _DEPFLAGS='-xM1 -xc99'
2800         _ldflags='-std=c99'
2801         _cflags_speed='-O5'
2802         _cflags_size='-O5 -xspace'
2803         _flags_filter=suncc_flags
2804     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2805         _type=pathscale
2806         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2807         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2808         _cflags_speed='-O2'
2809         _cflags_size='-Os'
2810         _flags_filter='filter_out -Wdisabled-optimization'
2811     elif $_cc -v 2>&1 | grep -q Open64; then
2812         _type=open64
2813         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2814         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2815         _cflags_speed='-O2'
2816         _cflags_size='-Os'
2817         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2818     elif $_cc -V 2>&1 | grep -q Portland; then
2819         _type=pgi
2820         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2821         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2822         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2823         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2824         _cflags_noopt="-O1"
2825         _flags_filter=pgi_flags
2826     elif $_cc 2>&1 | grep -q Microsoft; then
2827         _type=msvc
2828         _ident=$($cc 2>&1 | head -n1)
2829         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2830         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2831         _cflags_speed="-O2"
2832         _cflags_size="-O1"
2833         if $_cc 2>&1 | grep -q Linker; then
2834             _ld_o='-out:$@'
2835         else
2836             _ld_o='-Fe$@'
2837         fi
2838         _cc_o='-Fo$@'
2839         _cc_e='-P -Fi$@'
2840         _flags_filter=msvc_flags
2841         _ld_lib='lib%.a'
2842         _ld_path='-libpath:'
2843         _flags='-nologo'
2844         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2845         if [ $pfx = hostcc ]; then
2846             append _cflags -Dsnprintf=_snprintf
2847         fi
2848     elif $_cc 2>&1 | grep -q Intel; then
2849         _type=icl
2850         _ident=$($cc 2>&1 | head -n1)
2851         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2852         # Not only is O3 broken on 13.x+ but it is slower on all previous
2853         # versions (tested) as well.
2854         _cflags_speed="-O2"
2855         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2856         if $_cc 2>&1 | grep -q Linker; then
2857             _ld_o='-out:$@'
2858         else
2859             _ld_o='-Fe$@'
2860         fi
2861         _cc_o='-Fo$@'
2862         _cc_e='-P'
2863         _flags_filter=icl_flags
2864         _ld_lib='lib%.a'
2865         _ld_path='-libpath:'
2866         # -Qdiag-error to make icl error when seeing certain unknown arguments
2867         _flags='-nologo -Qdiag-error:4044,10157'
2868         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2869         # with MSVC which enables it by default.
2870         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2871         if [ $pfx = hostcc ]; then
2872             append _cflags -Dsnprintf=_snprintf
2873         fi
2874     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2875         _type=cparser
2876         _ident=$($_cc --version | head -n1)
2877         _depflags='-MMD'
2878         _cflags_speed='-O4'
2879         _cflags_size='-O2'
2880         _flags_filter=cparser_flags
2881     fi
2882
2883     eval ${pfx}_type=\$_type
2884     eval ${pfx}_ident=\$_ident
2885 }
2886
2887 set_ccvars(){
2888     eval ${1}_C=\${_cc_c-\${${1}_C}}
2889     eval ${1}_E=\${_cc_e-\${${1}_E}}
2890     eval ${1}_O=\${_cc_o-\${${1}_O}}
2891
2892     if [ -n "$_depflags" ]; then
2893         eval ${1}_DEPFLAGS=\$_depflags
2894     else
2895         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2896         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2897         eval DEP${1}FLAGS=\$_flags
2898     fi
2899 }
2900
2901 probe_cc cc "$cc"
2902 cflags_filter=$_flags_filter
2903 cflags_speed=$_cflags_speed
2904 cflags_size=$_cflags_size
2905 cflags_noopt=$_cflags_noopt
2906 add_cflags $_flags $_cflags
2907 cc_ldflags=$_ldflags
2908 set_ccvars CC
2909
2910 probe_cc hostcc "$host_cc"
2911 host_cflags_filter=$_flags_filter
2912 add_host_cflags  $_flags $_cflags
2913 set_ccvars HOSTCC
2914
2915 test -n "$cc_type" && enable $cc_type ||
2916     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2917
2918 : ${as_default:=$cc}
2919 : ${dep_cc_default:=$cc}
2920 : ${ld_default:=$cc}
2921 : ${host_ld_default:=$host_cc}
2922 set_default ar as dep_cc ld host_ld
2923
2924 probe_cc as "$as"
2925 asflags_filter=$_flags_filter
2926 add_asflags $_flags $_cflags
2927 set_ccvars AS
2928
2929 probe_cc ld "$ld"
2930 ldflags_filter=$_flags_filter
2931 add_ldflags $_flags $_ldflags
2932 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2933 LD_O=${_ld_o-$LD_O}
2934 LD_LIB=${_ld_lib-$LD_LIB}
2935 LD_PATH=${_ld_path-$LD_PATH}
2936
2937 probe_cc hostld "$host_ld"
2938 host_ldflags_filter=$_flags_filter
2939 add_host_ldflags $_flags $_ldflags
2940 HOSTLD_O=${_ld_o-$HOSTLD_O}
2941
2942 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2943     probe_cc depcc "$dep_cc"
2944     CCDEP=${_DEPCMD:-$DEPCMD}
2945     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2946     DEPCCFLAGS=$_flags
2947 fi
2948
2949 if $ar 2>&1 | grep -q Microsoft; then
2950     arflags="-nologo"
2951     ar_o='-out:$@'
2952 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2953     arflags="rq"
2954     ar_o='$@'
2955 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2956     arflags='-Xany -r -c'
2957     ar_o='$@'
2958 else
2959     arflags="rc"
2960     ar_o='$@'
2961 fi
2962
2963 add_cflags $extra_cflags
2964 add_asflags $extra_cflags
2965
2966 if test -n "$sysroot"; then
2967     case "$cc_type" in
2968         gcc|llvm_gcc|clang)
2969             add_cppflags --sysroot="$sysroot"
2970             add_ldflags --sysroot="$sysroot"
2971         ;;
2972         tms470)
2973             add_cppflags -I"$sysinclude"
2974             add_ldflags  --sysroot="$sysroot"
2975         ;;
2976     esac
2977 fi
2978
2979 if test "$cpu" = host; then
2980     enabled cross_compile &&
2981         die "--cpu=host makes no sense when cross-compiling."
2982
2983     case "$cc_type" in
2984         gcc|llvm_gcc)
2985             check_native(){
2986                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2987                 sed -n "/cc1.*$1=/{
2988                             s/.*$1=\\([^ ]*\\).*/\\1/
2989                             p
2990                             q
2991                         }" $TMPE
2992             }
2993             cpu=$(check_native -march || check_native -mcpu)
2994         ;;
2995     esac
2996
2997     test "${cpu:-host}" = host &&
2998         die "--cpu=host not supported with compiler $cc"
2999 fi
3000
3001 # Deal with common $arch aliases
3002 case "$arch" in
3003     aarch64|arm64)
3004         arch="aarch64"
3005     ;;
3006     arm*)
3007         arch="arm"
3008     ;;
3009     mips*|IP*)
3010         arch="mips"
3011     ;;
3012     parisc*|hppa*)
3013         arch="parisc"
3014     ;;
3015     "Power Macintosh"|ppc*|powerpc*)
3016         arch="ppc"
3017     ;;
3018     s390|s390x)
3019         arch="s390"
3020     ;;
3021     sh4|sh)
3022         arch="sh4"
3023     ;;
3024     sun4u|sparc*)
3025         arch="sparc"
3026     ;;
3027     tilegx|tile-gx)
3028         arch="tilegx"
3029     ;;
3030     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3031         arch="x86"
3032     ;;
3033 esac
3034
3035 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3036 enable $arch
3037
3038 # Add processor-specific flags
3039 if enabled aarch64; then
3040
3041     case $cpu in
3042         armv*)
3043             cpuflags="-march=$cpu"
3044         ;;
3045         *)
3046             cpuflags="-mcpu=$cpu"
3047         ;;
3048     esac
3049
3050 elif enabled alpha; then
3051
3052     cpuflags="-mcpu=$cpu"
3053
3054 elif enabled arm; then
3055
3056     check_arm_arch() {
3057         check_cpp_condition stddef.h \
3058             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3059             $cpuflags
3060     }
3061
3062     probe_arm_arch() {
3063         if   check_arm_arch 4;        then echo armv4;
3064         elif check_arm_arch 4T;       then echo armv4t;
3065         elif check_arm_arch 5;        then echo armv5;
3066         elif check_arm_arch 5E;       then echo armv5e;
3067         elif check_arm_arch 5T;       then echo armv5t;
3068         elif check_arm_arch 5TE;      then echo armv5te;
3069         elif check_arm_arch 5TEJ;     then echo armv5te;
3070         elif check_arm_arch 6;        then echo armv6;
3071         elif check_arm_arch 6J;       then echo armv6j;
3072         elif check_arm_arch 6K;       then echo armv6k;
3073         elif check_arm_arch 6Z;       then echo armv6z;
3074         elif check_arm_arch 6ZK;      then echo armv6zk;
3075         elif check_arm_arch 6T2;      then echo armv6t2;
3076         elif check_arm_arch 7;        then echo armv7;
3077         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3078         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3079         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3080         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3081         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3082         fi
3083     }
3084
3085     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3086
3087     case $cpu in
3088         armv*)
3089             cpuflags="-march=$cpu"
3090             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3091         ;;
3092         *)
3093             cpuflags="-mcpu=$cpu"
3094             case $cpu in
3095                 cortex-a*)                               subarch=armv7a  ;;
3096                 cortex-r*)                               subarch=armv7r  ;;
3097                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3098                 arm11*)                                  subarch=armv6   ;;
3099                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3100                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3101                 *)                             subarch=$(probe_arm_arch) ;;
3102             esac
3103         ;;
3104     esac
3105
3106     case "$subarch" in
3107         armv5t*)    enable fast_clz                ;;
3108         armv[6-8]*) enable fast_clz fast_unaligned ;;
3109     esac
3110
3111 elif enabled avr32; then
3112
3113     case $cpu in
3114         ap7[02]0[0-2])
3115             subarch="avr32_ap"
3116             cpuflags="-mpart=$cpu"
3117         ;;
3118         ap)
3119             subarch="avr32_ap"
3120             cpuflags="-march=$cpu"
3121         ;;
3122         uc3[ab]*)
3123             subarch="avr32_uc"
3124             cpuflags="-mcpu=$cpu"
3125         ;;
3126         uc)
3127             subarch="avr32_uc"
3128             cpuflags="-march=$cpu"
3129         ;;
3130     esac
3131
3132 elif enabled bfin; then
3133
3134     cpuflags="-mcpu=$cpu"
3135
3136 elif enabled mips; then
3137
3138     cpuflags="-march=$cpu"
3139
3140 elif enabled ppc; then
3141
3142     disable ldbrx
3143
3144     case $(tolower $cpu) in
3145         601|ppc601|powerpc601)
3146             cpuflags="-mcpu=601"
3147             disable altivec
3148         ;;
3149         603*|ppc603*|powerpc603*)
3150             cpuflags="-mcpu=603"
3151             disable altivec
3152         ;;
3153         604*|ppc604*|powerpc604*)
3154             cpuflags="-mcpu=604"
3155             disable altivec
3156         ;;
3157         g3|75*|ppc75*|powerpc75*)
3158             cpuflags="-mcpu=750"
3159             disable altivec
3160         ;;
3161         g4|745*|ppc745*|powerpc745*)
3162             cpuflags="-mcpu=7450"
3163         ;;
3164         74*|ppc74*|powerpc74*)
3165             cpuflags="-mcpu=7400"
3166         ;;
3167         g5|970|ppc970|powerpc970)
3168             cpuflags="-mcpu=970"
3169         ;;
3170         power[3-7]*)
3171             cpuflags="-mcpu=$cpu"
3172         ;;
3173         cell)
3174             cpuflags="-mcpu=cell"
3175             enable ldbrx
3176         ;;
3177         e500mc)
3178             cpuflags="-mcpu=e500mc"
3179             disable altivec
3180         ;;
3181         e500v2)
3182             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3183             disable altivec
3184             disable dcbzl
3185         ;;
3186         e500)
3187             cpuflags="-mcpu=8540 -mhard-float"
3188             disable altivec
3189             disable dcbzl
3190         ;;
3191     esac
3192
3193 elif enabled sparc; then
3194
3195     case $cpu in
3196         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3197             cpuflags="-mcpu=$cpu"
3198         ;;
3199         ultrasparc*|niagara[234])
3200             cpuflags="-mcpu=$cpu"
3201         ;;
3202     esac
3203
3204 elif enabled x86; then
3205
3206     case $cpu in
3207         i[345]86|pentium)
3208             cpuflags="-march=$cpu"
3209             disable mmx
3210         ;;
3211         # targets that do NOT support nopl and conditional mov (cmov)
3212         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3213             cpuflags="-march=$cpu"
3214             disable i686
3215         ;;
3216         # targets that do support nopl and conditional mov (cmov)
3217         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3218             cpuflags="-march=$cpu"
3219             enable i686
3220             enable fast_cmov
3221         ;;
3222         # targets that do support conditional mov but on which it's slow
3223         pentium4|pentium4m|prescott|nocona)
3224             cpuflags="-march=$cpu"
3225             enable i686
3226             disable fast_cmov
3227         ;;
3228     esac
3229
3230 fi
3231
3232 if [ "$cpu" != generic ]; then
3233     add_cflags  $cpuflags
3234     add_asflags $cpuflags
3235 fi
3236
3237 # compiler sanity check
3238 check_exec <<EOF
3239 int main(void){ return 0; }
3240 EOF
3241 if test "$?" != 0; then
3242     echo "$cc is unable to create an executable file."
3243     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3244         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3245         echo "Only do this if you know what cross compiling means."
3246     fi
3247     die "C compiler test failed."
3248 fi
3249
3250 add_cppflags -D_ISOC99_SOURCE
3251 check_cflags -std=c99
3252 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3253 #include <stdlib.h>
3254 EOF
3255 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3256 #include <stdlib.h>
3257 EOF
3258
3259 add_host_cppflags -D_ISOC99_SOURCE
3260 check_host_cflags -std=c99
3261 check_host_cflags -Wall
3262 check_host_cflags -O3
3263
3264 check_64bit(){
3265     arch32=$1
3266     arch64=$2
3267     expr=$3
3268     check_code cc "" "int test[2*($expr) - 1]" &&
3269         subarch=$arch64 || subarch=$arch32
3270 }
3271
3272 case "$arch" in
3273     aarch64|alpha|ia64)
3274         spic=$shared
3275     ;;
3276     mips)
3277         check_64bit mips mips64 '_MIPS_SIM > 1'
3278         spic=$shared
3279     ;;
3280     parisc)
3281         check_64bit parisc parisc64 'sizeof(void *) > 4'
3282         spic=$shared
3283     ;;
3284     ppc)
3285         check_64bit ppc ppc64 'sizeof(void *) > 4'
3286         spic=$shared
3287     ;;
3288     s390)
3289         check_64bit s390 s390x 'sizeof(void *) > 4'
3290         spic=$shared
3291     ;;
3292     sparc)
3293         check_64bit sparc sparc64 'sizeof(void *) > 4'
3294         spic=$shared
3295     ;;
3296     x86)
3297         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3298         if test "$subarch" = "x86_64"; then
3299             spic=$shared
3300         fi
3301     ;;
3302 esac
3303
3304 enable $subarch
3305 enabled spic && enable_weak pic
3306
3307 # OS specific
3308 case $target_os in
3309     aix)
3310         SHFLAGS=-shared
3311         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3312         enabled shared && add_ldflags -Wl,-brtl
3313         ;;
3314     haiku)
3315         prefix_default="/boot/common"
3316         network_extralibs="-lnetwork"
3317         host_libs=
3318         ;;
3319     sunos)
3320         SHFLAGS='-shared -Wl,-h,$$(@F)'
3321         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3322         network_extralibs="-lsocket -lnsl"
3323         # When using suncc to build, the Solaris linker will mark
3324         # an executable with each instruction set encountered by
3325         # the Solaris assembler.  As our libraries contain their own
3326         # guards for processor-specific code, instead suppress
3327         # generation of the HWCAPS ELF section on Solaris x86 only.
3328         enabled_all suncc x86 &&
3329             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3330             add_ldflags -Wl,-M,mapfile
3331         nm_default='nm -P -g'
3332         ;;
3333     netbsd)
3334         disable symver
3335         oss_indev_extralibs="-lossaudio"
3336         oss_outdev_extralibs="-lossaudio"
3337         ;;
3338     openbsd|bitrig)
3339         disable symver
3340         SHFLAGS='-shared'
3341         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3342         SLIB_INSTALL_LINKS=
3343         oss_indev_extralibs="-lossaudio"
3344         oss_outdev_extralibs="-lossaudio"
3345         ;;
3346     dragonfly)
3347         disable symver
3348         ;;
3349     freebsd)
3350         ;;
3351     bsd/os)
3352         add_extralibs -lpoll -lgnugetopt
3353         ;;
3354     darwin)
3355         gas="gas-preprocessor.pl $cc"
3356         enabled ppc && add_asflags -force_cpusubtype_ALL
3357         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3358         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3359         add_ldflags -Wl,-dynamic,-search_paths_first
3360         SLIBSUF=".dylib"
3361         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3362         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3363         objformat="macho"
3364         enabled x86_64 && objformat="macho64"
3365         enabled_any pic shared ||
3366             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3367         ;;
3368     mingw32*)
3369         if test $target_os = "mingw32ce"; then
3370             disable network
3371         else
3372             target_os=mingw32
3373         fi
3374         LIBTARGET=i386
3375         if enabled x86_64; then
3376             LIBTARGET="i386:x86-64"
3377         elif enabled arm; then
3378             LIBTARGET=arm-wince
3379         fi
3380         check_ldflags -Wl,--nxcompat
3381         check_ldflags -Wl,--dynamicbase
3382         shlibdir_default="$bindir_default"
3383         SLIBPREF=""
3384         SLIBSUF=".dll"
3385         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3386         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3387         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3388         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3389         SLIB_INSTALL_LINKS=
3390         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3391         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3392         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3393         objformat="win32"
3394         dlltool="${cross_prefix}dlltool"
3395         ranlib=:
3396         enable dos_paths
3397         ;;
3398     win32|win64)
3399         disable symver
3400         if enabled shared; then
3401             # Link to the import library instead of the normal static library
3402             # for shared libs.
3403             LD_LIB='%.lib'
3404             # Cannot build both shared and static libs with MSVC or icl.
3405             disable static
3406         fi
3407         shlibdir_default="$bindir_default"
3408         SLIBPREF=""
3409         SLIBSUF=".dll"
3410         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3411         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3412         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3413         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3414         SLIB_INSTALL_LINKS=
3415         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3416         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3417         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3418         objformat="win32"
3419         ranlib=:
3420         enable dos_paths
3421         ;;
3422     cygwin*)
3423         target_os=cygwin
3424         shlibdir_default="$bindir_default"
3425         SLIBPREF="cyg"
3426         SLIBSUF=".dll"
3427         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3428         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3429         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3430         SLIB_INSTALL_LINKS=
3431         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3432         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3433         objformat="win32"
3434         enable dos_paths
3435         ;;
3436     *-dos|freedos|opendos)
3437         network_extralibs="-lsocket"
3438         objformat="coff"
3439         enable dos_paths
3440         add_cppflags -U__STRICT_ANSI__
3441         ;;
3442     linux)
3443         enable dv1394
3444         ;;
3445     irix*)
3446         target_os=irix
3447         ranlib="echo ignoring ranlib"
3448         ;;
3449     os/2*)
3450         ln_s="cp -f"
3451         objformat="aout"
3452         add_cppflags -D_GNU_SOURCE
3453         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3454         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3455         LIBSUF="_s.a"
3456         SLIBPREF=""
3457         SLIBSUF=".dll"
3458         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3459         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3460         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3461             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3462             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3463             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3464             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3465             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3466         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3467             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3468         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3469         enable dos_paths
3470         ;;
3471     gnu/kfreebsd)
3472         add_cppflags -D_BSD_SOURCE
3473         ;;
3474     gnu)
3475         ;;
3476     qnx)
3477         add_cppflags -D_QNX_SOURCE
3478         network_extralibs="-lsocket"
3479         ;;
3480     symbian)
3481         SLIBSUF=".dll"
3482         enable dos_paths
3483         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3484         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3485         add_ldflags -Wl,--target1-abs,--no-undefined \
3486                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3487                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3488         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3489                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3490                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3491         ;;
3492     osf1)
3493         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3494         ;;
3495     minix)
3496         ;;
3497     plan9)
3498         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3499                      -D_REENTRANT_SOURCE        \
3500                      -D_RESEARCH_SOURCE         \
3501                      -DFD_SETSIZE=96            \
3502                      -DHAVE_SOCK_OPTS
3503         add_compat strtod.o strtod=avpriv_strtod
3504         network_extralibs='-lbsd'
3505         exeobjs=compat/plan9/main.o
3506         disable avserver
3507         cp_f='cp'
3508         ;;
3509     none)
3510         ;;
3511     *)
3512         die "Unknown OS '$target_os'."
3513         ;;
3514 esac
3515
3516 # determine libc flavour
3517
3518 probe_libc(){
3519     pfx=$1
3520     pfx_no_=${pfx%_}
3521     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3522     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3523         eval ${pfx}libc_type=uclibc
3524         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3525     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3526         eval ${pfx}libc_type=glibc
3527         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3528     # MinGW headers can be installed on Cygwin, so check for newlib first.
3529     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3530         eval ${pfx}libc_type=newlib
3531         add_${pfx}cppflags -U__STRICT_ANSI__
3532     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3533     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3534         eval ${pfx}libc_type=mingw64
3535         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3536         eval test \$${pfx_no_}cc_type = "gcc" &&
3537             add_${pfx}cppflags -D__printf__=__gnu_printf__
3538     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3539          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3540         eval ${pfx}libc_type=mingw32
3541         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3542             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3543             die "ERROR: MinGW32 runtime version must be >= 3.15."
3544         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3545         eval test \$${pfx_no_}cc_type = "gcc" &&
3546             add_${pfx}cppflags -D__printf__=__gnu_printf__
3547     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3548         eval ${pfx}libc_type=msvcrt
3549         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3550         # 0x601 by default unless something else is set by the user.
3551         # This can easily lead to us detecting functions only present
3552         # in such new versions and producing binaries requiring windows 7.0.
3553         # Therefore explicitly set the default to XP unless the user has
3554         # set something else on the command line.
3555         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3556             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3557     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3558         eval ${pfx}libc_type=klibc
3559     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3560         eval ${pfx}libc_type=bionic
3561     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3562         eval ${pfx}libc_type=solaris
3563         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3564     fi
3565 }
3566
3567 probe_libc
3568 test -n "$libc_type" && enable libc_$libc_type
3569 probe_libc host_
3570 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3571
3572 case $libc_type in
3573     bionic)
3574         add_compat strtod.o strtod=avpriv_strtod
3575         ;;
3576     msvcrt)
3577         add_compat strtod.o strtod=avpriv_strtod
3578         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3579                                      _snprintf=avpriv_snprintf  \
3580                                      vsnprintf=avpriv_vsnprintf
3581         ;;
3582 esac
3583
3584 # hacks for compiler/libc/os combinations
3585
3586 if enabled_all tms470 libc_glibc; then
3587     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3588     add_cppflags -D__USER_LABEL_PREFIX__=
3589     add_cppflags -D__builtin_memset=memset
3590     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3591     add_cflags   -pds=48    # incompatible redefinition of macro
3592 fi
3593
3594 if enabled_all ccc libc_glibc; then
3595     add_ldflags -Wl,-z,now  # calls to libots crash without this
3596 fi
3597
3598 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3599     add_cppflags '-I\$(SRC_PATH)/compat/float'
3600
3601 esc(){
3602     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3603 }
3604
3605 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3606
3607 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3608
3609 set_default $PATHS_LIST
3610 set_default nm
3611
3612 # we need to build at least one lib type
3613 if ! enabled_any static shared; then
3614     cat <<EOF
3615 At least one library type must be built.
3616 Specify --enable-static to build the static libraries or --enable-shared to
3617 build the shared libraries as well. To only build the shared libraries specify
3618 --disable-static in addition to --enable-shared.
3619 EOF
3620     exit 1;
3621 fi
3622
3623 die_license_disabled() {
3624     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3625 }
3626
3627 die_license_disabled gpl libcdio
3628 die_license_disabled gpl libx264
3629 die_license_disabled gpl libx265
3630 die_license_disabled gpl libxavs
3631 die_license_disabled gpl libxvid
3632 die_license_disabled gpl x11grab
3633
3634 die_license_disabled nonfree libfaac
3635 die_license_disabled nonfree libfdk_aac
3636 die_license_disabled nonfree openssl
3637
3638 die_license_disabled version3 libopencore_amrnb
3639 die_license_disabled version3 libopencore_amrwb
3640 die_license_disabled version3 libvo_aacenc
3641 die_license_disabled version3 libvo_amrwbenc
3642
3643 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3644
3645 disabled optimizations || check_cflags -fomit-frame-pointer
3646
3647 enable_weak_pic() {
3648     disabled pic && return
3649     enable pic
3650     add_cppflags -DPIC
3651     case "$target_os" in
3652     mingw*|cygwin*)
3653         ;;
3654     *)
3655         add_cflags -fPIC
3656         ;;
3657     esac
3658     add_asflags  -fPIC
3659 }
3660
3661 enabled pic && enable_weak_pic
3662
3663 check_cc <<EOF || die "Symbol mangling check failed."
3664 int ff_extern;
3665 EOF
3666 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3667 extern_prefix=${sym%%ff_extern*}
3668
3669 check_cc <<EOF && enable_weak inline_asm
3670 void foo(void) { __asm__ volatile ("" ::); }
3671 EOF
3672
3673 _restrict=
3674 for restrict_keyword in restrict __restrict__ __restrict; do
3675     check_cc <<EOF && _restrict=$restrict_keyword && break
3676 void foo(char * $restrict_keyword p);
3677 EOF
3678 done
3679
3680 check_cc <<EOF && enable pragma_deprecated
3681 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3682 EOF
3683
3684 check_cc <<EOF && enable attribute_packed
3685 struct { int x; } __attribute__((packed)) x;
3686 EOF
3687
3688 check_cc <<EOF && enable attribute_may_alias
3689 union { int x; } __attribute__((may_alias)) x;
3690 EOF
3691
3692 check_cc <<EOF || die "endian test failed"
3693 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3694 EOF
3695 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3696
3697 check_inline_asm inline_asm_labels '"1:\n"'
3698
3699 if enabled aarch64; then
3700     # internal assembler in clang 3.3 does not support this instruction
3701     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3702     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3703
3704     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3705
3706 elif enabled alpha; then
3707
3708     check_cflags -mieee
3709
3710 elif enabled arm; then
3711
3712     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3713     enabled thumb && check_cflags -mthumb || check_cflags -marm
3714     nogas=die
3715
3716     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3717         enable vfp_args
3718     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3719         case "${cross_prefix:-$cc}" in
3720             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3721             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3722 __asm__ (".eabi_attribute 28, 1");
3723 int main(void) { return 0; }
3724 EOF
3725         esac
3726         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3727     fi
3728
3729     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3730     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3731     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3732     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3733     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3734     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3735
3736     [ $target_os = linux ] ||
3737         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3738             $ARCH_EXT_LIST_ARM
3739
3740     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3741
3742     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3743
3744 elif enabled mips; then
3745
3746     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3747
3748 elif enabled parisc; then
3749
3750     if enabled gcc; then
3751         case $($cc -dumpversion) in
3752             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3753         esac
3754     fi
3755
3756 elif enabled ppc; then
3757
3758     enable local_aligned_8 local_aligned_16
3759
3760     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3761     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3762     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3763     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3764
3765     # AltiVec flags: The FSF version of GCC differs from the Apple version
3766     if enabled altivec; then
3767         nogas=warn
3768         check_cflags -maltivec -mabi=altivec &&
3769         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3770         check_cflags -faltivec
3771
3772         # check if our compiler supports Motorola AltiVec C API
3773         check_cc <<EOF || disable altivec
3774 $inc_altivec_h
3775 int main(void) {
3776     vector signed int v1 = (vector signed int) { 0 };
3777     vector signed int v2 = (vector signed int) { 1 };
3778     v1 = vec_add(v1, v2);
3779     return 0;
3780 }
3781 EOF
3782
3783         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3784     fi
3785
3786 elif enabled x86; then
3787
3788     check_builtin rdtsc    intrin.h   "__rdtsc()"
3789     check_builtin mm_empty mmintrin.h "_mm_empty()"
3790
3791     enable local_aligned_8 local_aligned_16
3792
3793     # check whether EBP is available on x86
3794     # As 'i' is stored on the stack, this program will crash
3795     # if the base pointer is used to access it because the
3796     # base pointer is cleared in the inline assembly code.
3797     check_exec_crash <<EOF && enable ebp_available
3798 volatile int i=0;
3799 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3800 return i;
3801 EOF
3802
3803     # check whether EBX is available on x86
3804     check_inline_asm ebx_available '""::"b"(0)' &&
3805         check_inline_asm ebx_available '"":::"%ebx"'
3806
3807     # check whether xmm clobbers are supported
3808     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3809
3810     # check whether binutils is new enough to compile SSSE3/MMXEXT
3811     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3812     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3813
3814     if ! disabled_any asm mmx yasm; then
3815         if check_cmd $yasmexe --version; then
3816             enabled x86_64 && yasm_extra="-m amd64"
3817             yasm_debug="-g dwarf2"
3818         elif check_cmd nasm -v; then
3819             yasmexe=nasm
3820             yasm_debug="-g -F dwarf"
3821             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3822         fi
3823
3824         YASMFLAGS="-f $objformat $yasm_extra"
3825         enabled pic               && append YASMFLAGS "-DPIC"
3826         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3827         case "$objformat" in
3828             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3829         esac
3830
3831         check_yasm "movbe ecx, [5]" && enable yasm ||
3832             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3833         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3834         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3835         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3836         check_yasm "CPU amdnop" || disable cpunop
3837     fi
3838
3839     case "$cpu" in
3840         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3841             disable fast_clz
3842         ;;
3843     esac
3844
3845 fi
3846
3847 if enabled asm; then
3848     as=${gas:=$as}
3849     check_as <<EOF && enable gnu_as || \
3850         $nogas "GNU assembler not found, install gas-preprocessor"
3851 .macro m n
3852 \n: .int 0
3853 .endm
3854 m x
3855 EOF
3856 fi
3857
3858 check_ldflags -Wl,--as-needed
3859
3860 if check_func dlopen; then
3861     ldl=
3862 elif check_func dlopen -ldl; then
3863     ldl=-ldl
3864 fi
3865
3866 if ! disabled network; then
3867     check_func getaddrinfo $network_extralibs
3868     check_func getservbyport $network_extralibs
3869     check_func inet_aton $network_extralibs
3870
3871     check_type netdb.h "struct addrinfo"
3872     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3873     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3874     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3875     check_type poll.h "struct pollfd"
3876     check_type netinet/sctp.h "struct sctp_event_subscribe"
3877     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3878     check_type netinet/in.h "struct sockaddr_in6"
3879     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3880     check_type "sys/types.h sys/socket.h" socklen_t
3881
3882     # Prefer arpa/inet.h over winsock2
3883     if check_header arpa/inet.h ; then
3884         check_func closesocket
3885     elif check_header winsock2.h ; then
3886         check_func_headers winsock2.h closesocket -lws2 &&
3887             network_extralibs="-lws2" ||
3888         { check_func_headers winsock2.h closesocket -lws2_32 &&
3889             network_extralibs="-lws2_32"; } || disable winsock2_h network
3890         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3891
3892         check_type ws2tcpip.h socklen_t
3893         check_type ws2tcpip.h "struct addrinfo"
3894         check_type ws2tcpip.h "struct group_source_req"
3895         check_type ws2tcpip.h "struct ip_mreq_source"
3896         check_type ws2tcpip.h "struct ipv6_mreq"
3897         check_type winsock2.h "struct pollfd"
3898         check_struct winsock2.h "struct sockaddr" sa_len
3899         check_type ws2tcpip.h "struct sockaddr_in6"
3900         check_type ws2tcpip.h "struct sockaddr_storage"
3901     else
3902         disable network
3903     fi
3904 fi
3905
3906 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3907 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3908 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3909 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3910
3911 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3912 check_func  ${malloc_prefix}memalign            && enable memalign
3913 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3914
3915 check_func  fcntl
3916 check_func  fork
3917 check_func  gethrtime
3918 check_func  getopt
3919 check_func  getrusage
3920 check_func  gettimeofday
3921 check_func  isatty
3922 check_func  localtime_r
3923 check_func  mach_absolute_time
3924 check_func  mkstemp
3925 check_func  mmap
3926 check_func  mprotect
3927 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3928 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3929 check_func  sched_getaffinity
3930 check_func  setrlimit
3931 check_func  strerror_r
3932 check_func  strptime
3933 check_func  sysconf
3934 check_func  sysctl
3935 check_func  usleep
3936
3937 check_func_headers io.h setmode
3938 check_func_headers stdlib.h getenv
3939
3940 check_func_headers windows.h GetProcessAffinityMask
3941 check_func_headers windows.h GetProcessTimes
3942 check_func_headers windows.h GetSystemTimeAsFileTime
3943 check_func_headers windows.h MapViewOfFile
3944 check_func_headers windows.h SetConsoleTextAttribute
3945 check_func_headers windows.h Sleep
3946 check_func_headers windows.h VirtualAlloc
3947
3948 check_header direct.h
3949 check_header dlfcn.h
3950 check_header dxva.h
3951 check_header dxva2api.h
3952 check_header io.h
3953 check_header mach/mach_time.h
3954 check_header malloc.h
3955 check_header poll.h
3956 check_header sys/mman.h
3957 check_header sys/param.h
3958 check_header sys/resource.h
3959 check_header sys/select.h
3960 check_header sys/time.h
3961 check_header sys/un.h
3962 check_header unistd.h
3963 check_header vdpau/vdpau.h
3964 check_header vdpau/vdpau_x11.h
3965 check_header VideoDecodeAcceleration/VDADecoder.h
3966 check_header windows.h
3967 check_header X11/extensions/XvMClib.h
3968
3969 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3970 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3971 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3972
3973 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3974
3975 if ! disabled w32threads && ! enabled pthreads; then
3976     check_func_headers "windows.h process.h" _beginthreadex &&
3977         enable w32threads || disable w32threads
3978 fi
3979
3980 # check for some common methods of building with pthread support
3981 # do this before the optional library checks as some of them require pthreads
3982 if ! disabled pthreads && ! enabled w32threads; then
3983     enable pthreads
3984     if check_func pthread_join -pthread; then
3985         add_cflags -pthread
3986         add_extralibs -pthread
3987     elif check_func pthread_join -pthreads; then
3988         add_cflags -pthreads
3989         add_extralibs -pthreads
3990     elif check_func pthread_join -lpthreadGC2; then
3991         add_extralibs -lpthreadGC2
3992     elif check_lib pthread.h pthread_join -lpthread; then
3993         :
3994     elif ! check_func pthread_join; then
3995         disable pthreads
3996     fi
3997 fi
3998
3999 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4000 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4001
4002 check_lib math.h sin -lm && LIBM="-lm"
4003 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4004
4005 atan2f_args=2
4006 ldexpf_args=2
4007 powf_args=2
4008
4009 for func in $MATH_FUNCS; do
4010     eval check_mathfunc $func \${${func}_args:-1}
4011 done
4012
4013 # these are off by default, so fail if requested and not available
4014 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4015                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4016                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4017 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4018 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4019 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4020 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4021 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4022 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4023                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4024                                done || die "ERROR: libgsm not found"; }
4025 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4026 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4027 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4028 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4029 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4030 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4031                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4032 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4033 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4034 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4035 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4036 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4037 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4038 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4039 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4040 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4041 enabled libvpx            && {
4042     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4043                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4044     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4045                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4046     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4047     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4048 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4049 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4050 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4051                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4052                                die "ERROR: libx264 version must be >= 0.118."; }
4053 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4054                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4055                                die "ERROR: libx265 version must be >= 13."; }
4056 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4057 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4058 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4059                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4060                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4061                                die "ERROR: openssl not found"; }
4062
4063 if enabled gnutls; then
4064     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4065     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4066 fi
4067
4068 # libdc1394 check
4069 if enabled libdc1394; then
4070     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4071         enable libdc1394_2; } ||
4072     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4073         enable libdc1394_1; } ||
4074     die "ERROR: No version of libdc1394 found "
4075 fi
4076
4077 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4078     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4079     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4080     enable sdl
4081 fi
4082
4083 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4084 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4085
4086 check_header linux/fb.h
4087 check_header linux/videodev2.h
4088 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4089
4090 check_header sys/videoio.h
4091
4092 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4093 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4094 # w32api 3.12 had it defined wrong
4095 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4096
4097 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4098 { check_header dev/bktr/ioctl_meteor.h &&
4099   check_header dev/bktr/ioctl_bt848.h; } ||
4100 { check_header machine/ioctl_meteor.h &&
4101   check_header machine/ioctl_bt848.h; } ||
4102 { check_header dev/video/meteor/ioctl_meteor.h &&
4103   check_header dev/video/bktr/ioctl_bt848.h; } ||
4104 check_header dev/ic/bt8xx.h
4105
4106 check_header sndio.h
4107 check_header sys/soundcard.h
4108 check_header soundcard.h
4109
4110 enabled_any alsa_indev alsa_outdev &&
4111     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4112
4113 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4114     check_func jack_port_get_latency_range -ljack
4115
4116 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4117
4118 if enabled libcdio; then
4119     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4120     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4121 fi
4122
4123 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4124
4125 enabled x11grab                                           &&
4126 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4127 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4128 { enabled xlib || die "ERROR: Xlib not found"; }
4129
4130 enabled vdpau &&
4131     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4132     disable vdpau
4133
4134 enabled vdpau && enabled xlib &&
4135     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4136     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4137     enable vdpau_x11
4138
4139 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4140
4141 # add some useful compiler flags if supported
4142 check_cflags -Wdeclaration-after-statement
4143 check_cflags -Wall
4144 check_cflags -Wdisabled-optimization
4145 check_cflags -Wpointer-arith
4146 check_cflags -Wredundant-decls
4147 check_cflags -Wcast-qual
4148 check_cflags -Wwrite-strings
4149 check_cflags -Wtype-limits
4150 check_cflags -Wundef
4151 check_cflags -Wmissing-prototypes
4152 check_cflags -Wstrict-prototypes
4153 enabled extra_warnings && check_cflags -Winline
4154
4155 check_disable_warning(){
4156     warning_flag=-W${1#-Wno-}
4157     test_cflags $warning_flag && add_cflags $1
4158 }
4159
4160 check_disable_warning -Wno-parentheses
4161 check_disable_warning -Wno-switch
4162 check_disable_warning -Wno-format-zero-length
4163 check_disable_warning -Wno-pointer-sign
4164
4165 # add some linker flags
4166 check_ldflags -Wl,--warn-common
4167 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4168 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4169
4170 # add some strip flags
4171 # -wN '..@*' is more selective than -x, but not available everywhere.
4172 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4173
4174 enabled neon_clobber_test &&
4175     check_ldflags -Wl,--wrap,avcodec_open2              \
4176                   -Wl,--wrap,avcodec_decode_audio4      \
4177                   -Wl,--wrap,avcodec_decode_video2      \
4178                   -Wl,--wrap,avcodec_decode_subtitle2   \
4179                   -Wl,--wrap,avcodec_encode_audio2      \
4180                   -Wl,--wrap,avcodec_encode_video2      \
4181                   -Wl,--wrap,avcodec_encode_subtitle    \
4182                   -Wl,--wrap,avresample_convert ||
4183     disable neon_clobber_test
4184
4185 enabled xmm_clobber_test &&
4186     check_ldflags -Wl,--wrap,avcodec_open2              \
4187                   -Wl,--wrap,avcodec_decode_audio4      \
4188                   -Wl,--wrap,avcodec_decode_video2      \
4189                   -Wl,--wrap,avcodec_decode_subtitle2   \
4190                   -Wl,--wrap,avcodec_encode_audio2      \
4191                   -Wl,--wrap,avcodec_encode_video2      \
4192                   -Wl,--wrap,avcodec_encode_subtitle    \
4193                   -Wl,--wrap,avresample_convert         \
4194                   -Wl,--wrap,sws_scale ||
4195     disable xmm_clobber_test
4196
4197 echo "X{};" > $TMPV
4198 if test_ldflags -Wl,--version-script,$TMPV; then
4199     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4200     check_cc <<EOF && enable symver_asm_label
4201 void ff_foo(void) __asm__ ("av_foo@VERSION");
4202 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4203 EOF
4204     check_cc <<EOF && enable symver_gnu_asm
4205 __asm__(".symver ff_foo,av_foo@VERSION");
4206 void ff_foo(void) {}
4207 EOF
4208 fi
4209
4210 if [ -z "$optflags" ]; then
4211     if enabled small; then
4212         optflags=$cflags_size
4213     elif enabled optimizations; then
4214         optflags=$cflags_speed
4215     else
4216         optflags=$cflags_noopt
4217     fi
4218 fi
4219
4220 check_optflags(){
4221     check_cflags "$@"
4222     enabled lto && check_ldflags "$@"
4223 }
4224
4225
4226 if enabled lto; then
4227     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4228     check_cflags  -flto
4229     check_ldflags -flto $cpuflags
4230 fi
4231
4232 check_optflags $optflags
4233 check_optflags -fno-math-errno
4234 check_optflags -fno-signed-zeros
4235
4236 if enabled icc; then
4237     # Just warnings, no remarks
4238     check_cflags -w1
4239     # -wd: Disable following warnings
4240     # 144, 167, 556: -Wno-pointer-sign
4241     # 1292: attribute "foo" ignored
4242     # 1419: external declaration in primary source file
4243     # 10006: ignoring unknown option -fno-signed-zeros
4244     # 10148: ignoring unknown option -Wno-parentheses
4245     # 10156: ignoring option '-W'; no argument required
4246     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4247     # 11030: Warning unknown option --as-needed
4248     # 10156: ignoring option '-export'; no argument required
4249     check_ldflags -wd10156,11030
4250     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4251     enable ebp_available
4252     if enabled x86_32; then
4253         icc_version=$($cc -dumpversion)
4254         test ${icc_version%%.*} -ge 11 &&
4255             check_cflags -falign-stack=maintain-16-byte ||
4256             disable aligned_stack
4257     fi
4258 elif enabled ccc; then
4259     # disable some annoying warnings
4260     add_cflags -msg_disable bitnotint
4261     add_cflags -msg_disable mixfuncvoid
4262     add_cflags -msg_disable nonstandcast
4263     add_cflags -msg_disable unsupieee
4264 elif enabled gcc; then
4265     check_optflags -fno-tree-vectorize
4266     check_cflags -Werror=implicit-function-declaration
4267     check_cflags -Werror=missing-prototypes
4268     check_cflags -Werror=return-type
4269     check_cflags -Werror=declaration-after-statement
4270     check_cflags -Werror=vla
4271     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4272 elif enabled llvm_gcc; then
4273     check_cflags -mllvm -stack-alignment=16
4274 elif enabled clang; then
4275     check_cflags -mllvm -stack-alignment=16
4276     check_cflags -Qunused-arguments
4277     check_cflags -Werror=implicit-function-declaration
4278     check_cflags -Werror=missing-prototypes
4279     check_cflags -Werror=return-type
4280 elif enabled cparser; then
4281     add_cflags -Wno-missing-variable-declarations
4282     add_cflags -Wno-empty-statement
4283 elif enabled armcc; then
4284     # 2523: use of inline assembler is deprecated
4285     add_cflags -W${armcc_opt},--diag_suppress=2523
4286     add_cflags -W${armcc_opt},--diag_suppress=1207
4287     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4288     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4289     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4290     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4291 elif enabled tms470; then
4292     add_cflags -pds=824 -pds=837
4293     disable inline_asm
4294 elif enabled pathscale; then
4295     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4296 elif enabled_any msvc icl; then
4297     enabled x86_32 && disable aligned_stack
4298     enabled_all x86_32 debug && add_cflags -Oy-
4299     enabled debug && add_ldflags -debug
4300     enable pragma_deprecated
4301     if enabled icl; then
4302         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4303         # (correctly) on icl 13.x.
4304         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4305             add_cflags -Qansi-alias
4306         # icl will pass the inline asm tests but inline asm is currently
4307         # not supported (build will fail)
4308         disable inline_asm
4309     fi
4310 fi
4311
4312 case $as_type in
4313     clang)
4314         add_asflags -Qunused-arguments
4315     ;;
4316 esac
4317
4318 case $ld_type in
4319     clang)
4320         check_ldflags -Qunused-arguments
4321     ;;
4322 esac
4323
4324 case $target_os in
4325     osf1)
4326         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4327     ;;
4328     plan9)
4329         add_cppflags -Dmain=plan9_main
4330     ;;
4331 esac
4332
4333 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4334
4335 check_deps $CONFIG_LIST       \
4336            $CONFIG_EXTRA      \
4337            $HAVE_LIST         \
4338            $ALL_COMPONENTS    \
4339
4340 ! enabled_any memalign posix_memalign aligned_malloc &&
4341     enabled_any $need_memalign && enable memalign_hack
4342
4343 for thread in $THREADS_LIST; do
4344     if enabled $thread; then
4345         test -n "$thread_type" &&
4346             die "ERROR: Only one thread type must be selected." ||
4347             thread_type="$thread"
4348     fi
4349 done
4350
4351 echo "install prefix            $prefix"
4352 echo "source path               $source_path"
4353 echo "C compiler                $cc"
4354 echo "C library                 $libc_type"
4355 if test "$host_cc" != "$cc"; then
4356     echo "host C compiler           $host_cc"
4357     echo "host C library            $host_libc_type"
4358 fi
4359 echo "ARCH                      $arch ($cpu)"
4360 if test "$build_suffix" != ""; then
4361     echo "build suffix              $build_suffix"
4362 fi
4363 if test "$extra_version" != ""; then
4364     echo "version string suffix     $extra_version"
4365 fi
4366 echo "big-endian                ${bigendian-no}"
4367 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4368 if enabled x86; then
4369     echo "${yasmexe}                      ${yasm-no}"
4370     echo "MMX enabled               ${mmx-no}"
4371     echo "MMXEXT enabled            ${mmxext-no}"
4372     echo "3DNow! enabled            ${amd3dnow-no}"
4373     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4374     echo "SSE enabled               ${sse-no}"
4375     echo "SSSE3 enabled             ${ssse3-no}"
4376     echo "AVX enabled               ${avx-no}"
4377     echo "XOP enabled               ${xop-no}"
4378     echo "FMA3 enabled              ${fma3-no}"
4379     echo "FMA4 enabled              ${fma4-no}"
4380     echo "i686 features enabled     ${i686-no}"
4381     echo "CMOV is fast              ${fast_cmov-no}"
4382     echo "EBX available             ${ebx_available-no}"
4383     echo "EBP available             ${ebp_available-no}"
4384 fi
4385 if enabled aarch64; then
4386     echo "NEON enabled              ${neon-no}"
4387     echo "VFP enabled               ${vfp-no}"
4388 fi
4389 if enabled arm; then
4390     echo "ARMv5TE enabled           ${armv5te-no}"
4391     echo "ARMv6 enabled             ${armv6-no}"
4392     echo "ARMv6T2 enabled           ${armv6t2-no}"
4393     echo "VFP enabled               ${vfp-no}"
4394     echo "NEON enabled              ${neon-no}"
4395 fi
4396 if enabled ppc; then
4397     echo "AltiVec enabled           ${altivec-no}"
4398     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4399     echo "dcbzl available           ${dcbzl-no}"
4400 fi
4401 echo "debug symbols             ${debug-no}"
4402 echo "optimize for size         ${small-no}"
4403 echo "optimizations             ${optimizations-no}"
4404 echo "static                    ${static-no}"
4405 echo "shared                    ${shared-no}"
4406 echo "new filter support        ${avfilter-no}"
4407 echo "network support           ${network-no}"
4408 echo "threading support         ${thread_type-no}"
4409 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4410 echo "SDL support               ${sdl-no}"
4411 test -n "$random_seed" &&
4412     echo "random seed               ${random_seed}"
4413 echo
4414
4415 echo "External libraries:"
4416 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4417 echo
4418
4419 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4420     echo "Enabled ${type}s:"
4421     eval list=\$$(toupper $type)_LIST
4422     print_enabled '_*' $list | print_3_columns
4423     echo
4424 done
4425
4426 license="LGPL version 2.1 or later"
4427 if enabled nonfree; then
4428     license="nonfree and unredistributable"
4429 elif enabled gplv3; then
4430     license="GPL version 3 or later"
4431 elif enabled lgplv3; then
4432     license="LGPL version 3 or later"
4433 elif enabled gpl; then
4434     license="GPL version 2 or later"
4435 fi
4436
4437 echo "License: $license"
4438
4439 echo "Creating config.mak and config.h..."
4440
4441 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4442
4443 config_files="$TMPH config.mak"
4444
4445 cat > config.mak <<EOF
4446 # Automatically generated by configure - do not modify!
4447 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4448 prefix=$prefix
4449 LIBDIR=\$(DESTDIR)$libdir
4450 SHLIBDIR=\$(DESTDIR)$shlibdir
4451 INCDIR=\$(DESTDIR)$incdir
4452 BINDIR=\$(DESTDIR)$bindir
4453 DATADIR=\$(DESTDIR)$datadir
4454 DOCDIR=\$(DESTDIR)$docdir
4455 MANDIR=\$(DESTDIR)$mandir
4456 SRC_PATH=$source_path
4457 CC_IDENT=$cc_ident
4458 ARCH=$arch
4459 CC=$cc
4460 AS=$as
4461 LD=$ld
4462 DEPCC=$dep_cc
4463 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4464 DEPAS=$as
4465 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4466 YASM=$yasmexe
4467 DEPYASM=$yasmexe
4468 AR=$ar
4469 ARFLAGS=$arflags
4470 AR_O=$ar_o
4471 RANLIB=$ranlib
4472 STRIP=$strip
4473 LN_S=$ln_s
4474 CPPFLAGS=$CPPFLAGS
4475 CFLAGS=$CFLAGS
4476 ASFLAGS=$ASFLAGS
4477 AS_C=$AS_C
4478 AS_O=$AS_O
4479 CC_C=$CC_C
4480 CC_E=$CC_E
4481 CC_O=$CC_O
4482 LD_O=$LD_O
4483 LD_LIB=$LD_LIB
4484 LD_PATH=$LD_PATH
4485 DLLTOOL=$dlltool
4486 LDFLAGS=$LDFLAGS
4487 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4488 STRIPFLAGS=$STRIPFLAGS
4489 YASMFLAGS=$YASMFLAGS
4490 BUILDSUF=$build_suffix
4491 FULLNAME=$FULLNAME
4492 LIBPREF=$LIBPREF
4493 LIBSUF=$LIBSUF
4494 LIBNAME=$LIBNAME
4495 SLIBPREF=$SLIBPREF
4496 SLIBSUF=$SLIBSUF
4497 EXESUF=$EXESUF
4498 EXTRA_VERSION=$extra_version
4499 CCDEP=$CCDEP
4500 CCDEP_FLAGS=$CCDEP_FLAGS
4501 ASDEP=$ASDEP
4502 ASDEP_FLAGS=$ASDEP_FLAGS
4503 CC_DEPFLAGS=$CC_DEPFLAGS
4504 AS_DEPFLAGS=$AS_DEPFLAGS
4505 HOSTCC=$host_cc
4506 HOSTLD=$host_ld
4507 HOSTCFLAGS=$host_cflags
4508 HOSTCPPFLAGS=$host_cppflags
4509 HOSTEXESUF=$HOSTEXESUF
4510 HOSTLDFLAGS=$host_ldflags
4511 HOSTLIBS=$host_libs
4512 DEPHOSTCC=$host_cc
4513 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4514 HOSTCCDEP=$HOSTCCDEP
4515 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4516 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4517 HOSTCC_C=$HOSTCC_C
4518 HOSTCC_O=$HOSTCC_O
4519 HOSTLD_O=$HOSTLD_O
4520 TARGET_EXEC=$target_exec $target_exec_args
4521 TARGET_PATH=$target_path
4522 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4523 CFLAGS-avplay=$sdl_cflags
4524 ZLIB=$($ldflags_filter -lz)
4525 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4526 EXTRALIBS=$extralibs
4527 COMPAT_OBJS=$compat_objs
4528 EXEOBJS=$exeobjs
4529 INSTALL=install
4530 LIBTARGET=${LIBTARGET}
4531 SLIBNAME=${SLIBNAME}
4532 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4533 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4534 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4535 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4536 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4537 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4538 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4539 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4540 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4541 EOF
4542
4543 get_version(){
4544     lcname=lib${1}
4545     name=$(toupper $lcname)
4546     file=$source_path/$lcname/version.h
4547     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4548     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4549     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4550     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4551     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4552 }
4553
4554 map 'get_version $v' $LIBRARY_LIST
4555
4556 print_program_libs(){
4557     eval "program_libs=\$${1}_libs"
4558     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4559 }
4560
4561 map 'print_program_libs $v' $PROGRAM_LIST
4562
4563 cat > $TMPH <<EOF
4564 /* Automatically generated by configure - do not modify! */
4565 #ifndef LIBAV_CONFIG_H
4566 #define LIBAV_CONFIG_H
4567 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4568 #define LIBAV_LICENSE "$(c_escape $license)"
4569 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4570 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4571 #define restrict $_restrict
4572 #define EXTERN_PREFIX "${extern_prefix}"
4573 #define EXTERN_ASM ${extern_prefix}
4574 #define SLIBSUF "$SLIBSUF"
4575 EOF
4576
4577 test -n "$malloc_prefix" &&
4578     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4579
4580 if enabled yasm; then
4581     append config_files $TMPASM
4582     printf '' >$TMPASM
4583 fi
4584
4585 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4586
4587 print_config ARCH_   "$config_files" $ARCH_LIST
4588 print_config HAVE_   "$config_files" $HAVE_LIST
4589 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4590                                      $CONFIG_EXTRA      \
4591                                      $ALL_COMPONENTS    \
4592
4593 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4594
4595 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4596 cp_if_changed $TMPH config.h
4597 touch .config
4598
4599 enabled yasm && cp_if_changed $TMPASM config.asm
4600
4601 cat > $TMPH <<EOF
4602 /* Generated by ffconf */
4603 #ifndef AVUTIL_AVCONFIG_H
4604 #define AVUTIL_AVCONFIG_H
4605 EOF
4606
4607 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4608
4609 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4610
4611 cp_if_changed $TMPH libavutil/avconfig.h
4612
4613 test -n "$WARNINGS" && printf "\n$WARNINGS"
4614
4615 # build pkg-config files
4616
4617 pkgconfig_generate(){
4618     name=$1
4619     shortname=${name#lib}${build_suffix}
4620     comment=$2
4621     version=$3
4622     libs=$4
4623     requires=$5
4624     enabled ${name#lib} || return 0
4625     mkdir -p $name
4626     cat <<EOF > $name/$name.pc
4627 prefix=$prefix
4628 exec_prefix=\${prefix}
4629 libdir=$libdir
4630 includedir=$incdir
4631
4632 Name: $name
4633 Description: $comment
4634 Version: $version
4635 Requires: $(enabled shared || echo $requires)
4636 Requires.private: $(enabled shared && echo $requires)
4637 Conflicts:
4638 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4639 Libs.private: $(enabled shared && echo $libs)
4640 Cflags: -I\${includedir}
4641 EOF
4642     cat <<EOF > $name/$name-uninstalled.pc
4643 prefix=
4644 exec_prefix=
4645 libdir=\${pcfiledir}
4646 includedir=${source_path}
4647
4648 Name: $name
4649 Description: $comment
4650 Version: $version
4651 Requires: $requires
4652 Conflicts:
4653 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4654 Cflags: -I\${includedir}
4655 EOF
4656 }
4657
4658 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4659 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4660 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4661 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4662
4663 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4664 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4665 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4666 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4667 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4668 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4669 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"