Add an audio transcoding example.
[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-libx264         enable H.264 encoding via x264 [no]
206   --enable-libxavs         enable AVS encoding via xavs [no]
207   --enable-libxvid         enable Xvid encoding via xvidcore,
208                            native MPEG-4/Xvid encoder exists [no]
209   --enable-openssl         enable openssl [no]
210   --enable-x11grab         enable X11 grabbing [no]
211   --enable-zlib            enable zlib [autodetect]
212
213 Advanced options (experts only):
214   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
215   --enable-cross-compile   assume a cross-compiler is used
216   --sysroot=PATH           root of cross-build tree
217   --sysinclude=PATH        location of cross-build system headers
218   --target-os=OS           compiler targets OS [$target_os]
219   --target-exec=CMD        command to run executables on target
220   --target-path=DIR        path to view of build directory on target
221   --target-samples=DIR     path to samples directory on target
222   --toolchain=NAME         set tool defaults according to NAME
223   --nm=NM                  use nm tool
224   --ar=AR                  use archive tool AR [$ar_default]
225   --as=AS                  use assembler AS [$as_default]
226   --cc=CC                  use C compiler CC [$cc_default]
227   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
228   --ld=LD                  use linker LD
229   --host-cc=HOSTCC         use host C compiler HOSTCC
230   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
231   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
232   --host-ld=HOSTLD         use host linker HOSTLD
233   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
234   --host-libs=HLIBS        use libs HLIBS when linking for host
235   --host-os=OS             compiler host OS [$target_os]
236   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
237   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
238   --extra-libs=ELIBS       add ELIBS [$ELIBS]
239   --extra-version=STRING   version string suffix []
240   --optflags=OPTFLAGS      override optimization-related compiler flags
241   --build-suffix=SUFFIX    library name suffix []
242   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
243   --arch=ARCH              select architecture [$arch]
244   --cpu=CPU                select the minimum required CPU (affects
245                            instruction selection, may crash on older CPUs)
246   --enable-pic             build position-independent code
247   --enable-sram            allow use of on-chip SRAM
248   --enable-thumb           compile for Thumb instruction set
249   --disable-symver         disable symbol versioning
250   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
251   --disable-safe-bitstream-reader
252                            disable buffer boundary checking in bitreaders
253                            (faster, but may crash)
254   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
255   --enable-lto             use link-time optimization
256
257 Optimization options (experts only):
258   --disable-asm            disable all assembler optimizations
259   --disable-altivec        disable AltiVec optimizations
260   --disable-amd3dnow       disable 3DNow! optimizations
261   --disable-amd3dnowext    disable 3DNow! extended optimizations
262   --disable-mmx            disable MMX optimizations
263   --disable-mmxext         disable MMXEXT optimizations
264   --disable-sse            disable SSE optimizations
265   --disable-sse2           disable SSE2 optimizations
266   --disable-sse3           disable SSE3 optimizations
267   --disable-ssse3          disable SSSE3 optimizations
268   --disable-sse4           disable SSE4 optimizations
269   --disable-sse42          disable SSE4.2 optimizations
270   --disable-avx            disable AVX optimizations
271   --disable-fma4           disable FMA4 optimizations
272   --disable-avx2           disable AVX2 optimizations
273   --disable-armv5te        disable armv5te optimizations
274   --disable-armv6          disable armv6 optimizations
275   --disable-armv6t2        disable armv6t2 optimizations
276   --disable-vfp            disable VFP optimizations
277   --disable-neon           disable NEON optimizations
278   --disable-vis            disable VIS optimizations
279   --disable-inline-asm     disable use of inline assembler
280   --disable-yasm           disable use of yasm assembler
281
282 Developer options (useful when working on Libav itself):
283   --disable-debug          disable debugging symbols
284   --enable-debug=LEVEL     set the debug level [$debuglevel]
285   --disable-optimizations  disable compiler optimizations
286   --enable-extra-warnings  enable more compiler warnings
287   --samples=PATH           location of test samples for FATE, if not set use
288                            \$LIBAV_SAMPLES at make invocation time.
289   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
290                            should be used only for debugging purposes)
291   --enable-random          randomly enable/disable components
292   --disable-random
293   --enable-random=LIST     randomly enable/disable specific components or
294   --disable-random=LIST    component groups. LIST is a comma-separated list
295                            of NAME[:PROB] entries where NAME is a component
296                            (group) and PROB the probability associated with
297                            NAME (default 0.5).
298   --random-seed=VALUE      seed value for --enable/disable-random
299
300 NOTE: Object files are built at the place where configure is launched.
301 EOF
302   exit 0
303 }
304
305 quotes='""'
306
307 log(){
308     echo "$@" >> $logfile
309 }
310
311 log_file(){
312     log BEGIN $1
313     pr -n -t $1 >> $logfile
314     log END $1
315 }
316
317 echolog(){
318     log "$@"
319     echo "$@"
320 }
321
322 warn(){
323     log "WARNING: $*"
324     WARNINGS="${WARNINGS}WARNING: $*\n"
325 }
326
327 die(){
328     echolog "$@"
329     cat <<EOF
330
331 If you think configure made a mistake, make sure you are using the latest
332 version from Git.  If the latest version fails, report the problem to the
333 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
334 EOF
335     if disabled logging; then
336         cat <<EOF
337 Rerun configure with logging enabled (do not use --disable-logging), and
338 include the log this produces with your report.
339 EOF
340     else
341         cat <<EOF
342 Include the log file "$logfile" produced by configure as this will help
343 solving the problem.
344 EOF
345     fi
346     exit 1
347 }
348
349 # Avoid locale weirdness, besides we really just want to translate ASCII.
350 toupper(){
351     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
352 }
353
354 tolower(){
355     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
356 }
357
358 c_escape(){
359     echo "$*" | sed 's/["\\]/\\\0/g'
360 }
361
362 sh_quote(){
363     v=$(echo "$1" | sed "s/'/'\\\\''/g")
364     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
365     echo "$v"
366 }
367
368 cleanws(){
369     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
370 }
371
372 filter(){
373     pat=$1
374     shift
375     for v; do
376         eval "case $v in $pat) echo $v ;; esac"
377     done
378 }
379
380 filter_out(){
381     pat=$1
382     shift
383     for v; do
384         eval "case $v in $pat) ;; *) echo $v ;; esac"
385     done
386 }
387
388 map(){
389     m=$1
390     shift
391     for v; do eval $m; done
392 }
393
394 add_suffix(){
395     suffix=$1
396     shift
397     for v; do echo ${v}${suffix}; done
398 }
399
400 set_all(){
401     value=$1
402     shift
403     for var in $*; do
404         eval $var=$value
405     done
406 }
407
408 set_weak(){
409     value=$1
410     shift
411     for var; do
412         eval : \${$var:=$value}
413     done
414 }
415
416 sanitize_var_name(){
417     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
418 }
419
420 set_safe(){
421     var=$1
422     shift
423     eval $(sanitize_var_name "$var")='$*'
424 }
425
426 get_safe(){
427     eval echo \$$(sanitize_var_name "$1")
428 }
429
430 pushvar(){
431     for pvar in $*; do
432         eval level=\${${pvar}_level:=0}
433         eval ${pvar}_${level}="\$$pvar"
434         eval ${pvar}_level=$(($level+1))
435     done
436 }
437
438 popvar(){
439     for pvar in $*; do
440         eval level=\${${pvar}_level:-0}
441         test $level = 0 && continue
442         eval level=$(($level-1))
443         eval $pvar="\${${pvar}_${level}}"
444         eval ${pvar}_level=$level
445         eval unset ${pvar}_${level}
446     done
447 }
448
449 enable(){
450     set_all yes $*
451 }
452
453 disable(){
454     set_all no $*
455 }
456
457 enable_weak(){
458     set_weak yes $*
459 }
460
461 disable_weak(){
462     set_weak no $*
463 }
464
465 enable_safe(){
466     for var; do
467         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
468     done
469 }
470
471 disable_safe(){
472     for var; do
473         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
474     done
475 }
476
477 do_enable_deep(){
478     for var; do
479         enabled $var && continue
480         eval sel="\$${var}_select"
481         eval sgs="\$${var}_suggest"
482         pushvar var sgs
483         enable_deep $sel
484         popvar sgs
485         enable_deep_weak $sgs
486         popvar var
487     done
488 }
489
490 enable_deep(){
491     do_enable_deep $*
492     enable $*
493 }
494
495 enable_deep_weak(){
496     for var; do
497         disabled $var && continue
498         pushvar var
499         do_enable_deep $var
500         popvar var
501         enable_weak $var
502     done
503 }
504
505 enabled(){
506     test "${1#!}" = "$1" && op== || op=!=
507     eval test "x\$${1#!}" $op "xyes"
508 }
509
510 disabled(){
511     test "${1#!}" = "$1" && op== || op=!=
512     eval test "x\$${1#!}" $op "xno"
513 }
514
515 enabled_all(){
516     for opt; do
517         enabled $opt || return 1
518     done
519 }
520
521 disabled_all(){
522     for opt; do
523         disabled $opt || return 1
524     done
525 }
526
527 enabled_any(){
528     for opt; do
529         enabled $opt && return 0
530     done
531 }
532
533 disabled_any(){
534     for opt; do
535         disabled $opt && return 0
536     done
537     return 1
538 }
539
540 set_default(){
541     for opt; do
542         eval : \${$opt:=\$${opt}_default}
543     done
544 }
545
546 is_in(){
547     value=$1
548     shift
549     for var in $*; do
550         [ $var = $value ] && return 0
551     done
552     return 1
553 }
554
555 do_check_deps(){
556     for cfg; do
557         cfg="${cfg#!}"
558         enabled ${cfg}_checking && die "Circular dependency for $cfg."
559         disabled ${cfg}_checking && continue
560         enable ${cfg}_checking
561         append allopts $cfg
562
563         eval dep_all="\$${cfg}_deps"
564         eval dep_any="\$${cfg}_deps_any"
565         eval dep_sel="\$${cfg}_select"
566         eval dep_sgs="\$${cfg}_suggest"
567         eval dep_ifa="\$${cfg}_if"
568         eval dep_ifn="\$${cfg}_if_any"
569
570         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
571         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
572         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
573
574         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
575         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
576         enabled_all  $dep_all || disable $cfg
577         enabled_any  $dep_any || disable $cfg
578         disabled_any $dep_sel && disable $cfg
579
580         if enabled $cfg; then
581             enable_deep $dep_sel
582             enable_deep_weak $dep_sgs
583         fi
584
585         disable ${cfg}_checking
586     done
587 }
588
589 check_deps(){
590     unset allopts
591
592     do_check_deps "$@"
593
594     for cfg in $allopts; do
595         enabled $cfg || continue
596         eval dep_extralibs="\$${cfg}_extralibs"
597         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
598     done
599 }
600
601 print_config(){
602     pfx=$1
603     files=$2
604     shift 2
605     map 'eval echo "$v \${$v:-no}"' "$@" |
606     awk "BEGIN { split(\"$files\", files) }
607         {
608             c = \"$pfx\" toupper(\$1);
609             v = \$2;
610             sub(/yes/, 1, v);
611             sub(/no/,  0, v);
612             for (f in files) {
613                 file = files[f];
614                 if (file ~ /\\.h\$/) {
615                     printf(\"#define %s %d\\n\", c, v) >>file;
616                 } else if (file ~ /\\.asm\$/) {
617                     printf(\"%%define %s %d\\n\", c, v) >>file;
618                 } else if (file ~ /\\.mak\$/) {
619                     n = -v ? \"\" : \"!\";
620                     printf(\"%s%s=yes\\n\", n, c) >>file;
621                 }
622             }
623         }"
624 }
625
626 print_enabled(){
627     suf=$1
628     shift
629     for v; do
630         enabled $v && printf "%s\n" ${v%$suf};
631     done
632 }
633
634 append(){
635     var=$1
636     shift
637     eval "$var=\"\$$var $*\""
638 }
639
640 prepend(){
641     var=$1
642     shift
643     eval "$var=\"$* \$$var\""
644 }
645
646 add_cppflags(){
647     append CPPFLAGS "$@"
648 }
649
650 add_cflags(){
651     append CFLAGS $($cflags_filter "$@")
652 }
653
654 add_asflags(){
655     append ASFLAGS $($asflags_filter "$@")
656 }
657
658 add_ldflags(){
659     append LDFLAGS $($ldflags_filter "$@")
660 }
661
662 add_extralibs(){
663     prepend extralibs $($ldflags_filter "$@")
664 }
665
666 add_host_cppflags(){
667     append host_cppflags "$@"
668 }
669
670 add_host_cflags(){
671     append host_cflags $($host_cflags_filter "$@")
672 }
673
674 add_host_ldflags(){
675     append host_ldflags $($host_ldflags_filter "$@")
676 }
677
678 add_compat(){
679     append compat_objs $1
680     shift
681     map 'add_cppflags -D$v' "$@"
682 }
683
684 check_cmd(){
685     log "$@"
686     "$@" >> $logfile 2>&1
687 }
688
689 cc_o(){
690     eval printf '%s\\n' $CC_O
691 }
692
693 cc_e(){
694     eval printf '%s\\n' $CC_E
695 }
696
697 check_cc(){
698     log check_cc "$@"
699     cat > $TMPC
700     log_file $TMPC
701     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
702 }
703
704 check_cpp(){
705     log check_cpp "$@"
706     cat > $TMPC
707     log_file $TMPC
708     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
709 }
710
711 as_o(){
712     eval printf '%s\\n' $AS_O
713 }
714
715 check_as(){
716     log check_as "$@"
717     cat > $TMPS
718     log_file $TMPS
719     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
720 }
721
722 check_inline_asm(){
723     log check_inline_asm "$@"
724     name="$1"
725     code="$2"
726     shift 2
727     disable $name
728     check_cc "$@" <<EOF && enable $name
729 void foo(void){ __asm__ volatile($code); }
730 EOF
731 }
732
733 check_insn(){
734     log check_insn "$@"
735     check_inline_asm ${1}_inline "\"$2\""
736     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
737 }
738
739 check_yasm(){
740     log check_yasm "$@"
741     echo "$1" > $TMPS
742     log_file $TMPS
743     shift 1
744     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
745 }
746
747 ld_o(){
748     eval printf '%s\\n' $LD_O
749 }
750
751 check_ld(){
752     log check_ld "$@"
753     flags=$(filter_out '-l*' "$@")
754     libs=$(filter '-l*' "$@")
755     check_cc $($cflags_filter $flags) || return
756     flags=$($ldflags_filter $flags)
757     libs=$($ldflags_filter $libs)
758     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
759 }
760
761 check_code(){
762     log check_code "$@"
763     check=$1
764     headers=$2
765     code=$3
766     shift 3
767     {
768         for hdr in $headers; do
769             echo "#include <$hdr>"
770         done
771         echo "int main(void) { $code; return 0; }"
772     } | check_$check "$@"
773 }
774
775 check_cppflags(){
776     log check_cppflags "$@"
777     check_cc "$@" <<EOF && append CPPFLAGS "$@"
778 int x;
779 EOF
780 }
781
782 test_cflags(){
783     log test_cflags "$@"
784     set -- $($cflags_filter "$@")
785     check_cc "$@" <<EOF
786 int x;
787 EOF
788 }
789
790 check_cflags(){
791     log check_cflags "$@"
792     test_cflags "$@" && add_cflags "$@"
793 }
794
795 test_ldflags(){
796     log test_ldflags "$@"
797     check_ld "$@" <<EOF
798 int main(void){ return 0; }
799 EOF
800 }
801
802 check_ldflags(){
803     log check_ldflags "$@"
804     test_ldflags "$@" && add_ldflags "$@"
805 }
806
807 check_header(){
808     log check_header "$@"
809     header=$1
810     shift
811     disable_safe $header
812     check_cpp "$@" <<EOF && enable_safe $header
813 #include <$header>
814 int x;
815 EOF
816 }
817
818 check_func(){
819     log check_func "$@"
820     func=$1
821     shift
822     disable $func
823     check_ld "$@" <<EOF && enable $func
824 extern int $func();
825 int main(void){ $func(); }
826 EOF
827 }
828
829 check_mathfunc(){
830     log check_mathfunc "$@"
831     func=$1
832     narg=$2
833     shift 2
834     test $narg = 2 && args="f, g" || args="f"
835     disable $func
836     check_ld "$@" <<EOF && enable $func
837 #include <math.h>
838 float foo(float f, float g) { return $func($args); }
839 int main(void){ return 0; }
840 EOF
841 }
842
843 check_func_headers(){
844     log check_func_headers "$@"
845     headers=$1
846     funcs=$2
847     shift 2
848     {
849         for hdr in $headers; do
850             echo "#include <$hdr>"
851         done
852         for func in $funcs; do
853             echo "long check_$func(void) { return (long) $func; }"
854         done
855         echo "int main(void) { return 0; }"
856     } | check_ld "$@" && enable $funcs && enable_safe $headers
857 }
858
859 check_cpp_condition(){
860     log check_cpp_condition "$@"
861     header=$1
862     condition=$2
863     shift 2
864     check_cpp "$@" <<EOF
865 #include <$header>
866 #if !($condition)
867 #error "unsatisfied condition: $condition"
868 #endif
869 EOF
870 }
871
872 check_lib(){
873     log check_lib "$@"
874     header="$1"
875     func="$2"
876     shift 2
877     check_header $header && check_func $func "$@" && add_extralibs "$@"
878 }
879
880 check_lib2(){
881     log check_lib2 "$@"
882     headers="$1"
883     funcs="$2"
884     shift 2
885     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
886 }
887
888 check_pkg_config(){
889     log check_pkg_config "$@"
890     pkg="$1"
891     headers="$2"
892     funcs="$3"
893     shift 3
894     check_cmd $pkg_config --exists --print-errors $pkg || return
895     pkg_cflags=$($pkg_config --cflags $pkg)
896     pkg_libs=$($pkg_config --libs $pkg)
897     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
898         set_safe ${pkg}_cflags $pkg_cflags   &&
899         set_safe ${pkg}_libs   $pkg_libs
900 }
901
902 check_exec(){
903     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
904 }
905
906 check_exec_crash(){
907     code=$(cat)
908
909     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
910     # are safe but may not be available everywhere.  Thus we use
911     # raise(SIGTERM) instead.  The check is run in a subshell so we
912     # can redirect the "Terminated" message from the shell.  SIGBUS
913     # is not defined by standard C so it is used conditionally.
914
915     (check_exec "$@") >> $logfile 2>&1 <<EOF
916 #include <signal.h>
917 static void sighandler(int sig){
918     raise(SIGTERM);
919 }
920 int foo(void){
921     $code
922 }
923 int (*func_ptr)(void) = foo;
924 int main(void){
925     signal(SIGILL, sighandler);
926     signal(SIGFPE, sighandler);
927     signal(SIGSEGV, sighandler);
928 #ifdef SIGBUS
929     signal(SIGBUS, sighandler);
930 #endif
931     return func_ptr();
932 }
933 EOF
934 }
935
936 check_type(){
937     log check_type "$@"
938     headers=$1
939     type=$2
940     shift 2
941     disable_safe "$type"
942     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
943 }
944
945 check_struct(){
946     log check_struct "$@"
947     headers=$1
948     struct=$2
949     member=$3
950     shift 3
951     disable_safe "${struct}_${member}"
952     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
953         enable_safe "${struct}_${member}"
954 }
955
956 check_builtin(){
957     log check_builtin "$@"
958     name=$1
959     headers=$2
960     builtin=$3
961     shift 3
962     disable "$name"
963     check_code ld "$headers" "$builtin" "$@" && enable "$name"
964 }
965
966 require(){
967     name="$1"
968     header="$2"
969     func="$3"
970     shift 3
971     check_lib $header $func "$@" || die "ERROR: $name not found"
972 }
973
974 require2(){
975     name="$1"
976     headers="$2"
977     func="$3"
978     shift 3
979     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
980 }
981
982 require_pkg_config(){
983     pkg="$1"
984     check_pkg_config "$@" || die "ERROR: $pkg not found"
985     add_cflags    $(get_safe ${pkg}_cflags)
986     add_extralibs $(get_safe ${pkg}_libs)
987 }
988
989 hostcc_o(){
990     eval printf '%s\\n' $HOSTCC_O
991 }
992
993 check_host_cc(){
994     log check_host_cc "$@"
995     cat > $TMPC
996     log_file $TMPC
997     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
998 }
999
1000 check_host_cppflags(){
1001     log check_host_cppflags "$@"
1002     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1003 int x;
1004 EOF
1005 }
1006
1007 check_host_cflags(){
1008     log check_host_cflags "$@"
1009     set -- $($host_cflags_filter "$@")
1010     check_host_cc "$@" <<EOF && append host_cflags "$@"
1011 int x;
1012 EOF
1013 }
1014
1015 apply(){
1016     file=$1
1017     shift
1018     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1019 }
1020
1021 cp_if_changed(){
1022     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1023     mkdir -p "$(dirname $2)"
1024     $cp_f "$1" "$2"
1025 }
1026
1027 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1028 # system-dependent things.
1029
1030 COMPONENT_LIST="
1031     bsfs
1032     decoders
1033     demuxers
1034     encoders
1035     filters
1036     hwaccels
1037     indevs
1038     muxers
1039     outdevs
1040     parsers
1041     protocols
1042 "
1043
1044 EXAMPLE_LIST="
1045     output_example
1046     transcode_aac_example
1047 "
1048
1049 EXTERNAL_LIBRARY_LIST="
1050     avisynth
1051     bzlib
1052     frei0r
1053     gnutls
1054     libcdio
1055     libdc1394
1056     libfaac
1057     libfdk_aac
1058     libfreetype
1059     libgsm
1060     libilbc
1061     libmp3lame
1062     libopencore_amrnb
1063     libopencore_amrwb
1064     libopencv
1065     libopenjpeg
1066     libopus
1067     libpulse
1068     librtmp
1069     libschroedinger
1070     libspeex
1071     libtheora
1072     libvo_aacenc
1073     libvo_amrwbenc
1074     libvorbis
1075     libvpx
1076     libwavpack
1077     libx264
1078     libxavs
1079     libxvid
1080     openssl
1081     x11grab
1082     zlib
1083 "
1084
1085 HWACCEL_LIST="
1086     dxva2
1087     vaapi
1088     vda
1089     vdpau
1090 "
1091 LIBRARY_LIST="
1092     avcodec
1093     avdevice
1094     avfilter
1095     avformat
1096     avresample
1097     avutil
1098     swscale
1099 "
1100
1101 PROGRAM_LIST="
1102     avconv
1103     avplay
1104     avprobe
1105     avserver
1106 "
1107
1108 CONFIG_LIST="
1109     $COMPONENT_LIST
1110     $EXAMPLE_LIST
1111     $EXTERNAL_LIBRARY_LIST
1112     $HWACCEL_LIST
1113     $LIBRARY_LIST
1114     $PROGRAM_LIST
1115     dct
1116     doc
1117     error_resilience
1118     fft
1119     gpl
1120     gray
1121     hardcoded_tables
1122     lsp
1123     lzo
1124     mdct
1125     memalign_hack
1126     network
1127     nonfree
1128     pod2man
1129     pic
1130     rdft
1131     runtime_cpudetect
1132     safe_bitstream_reader
1133     shared
1134     small
1135     sram
1136     static
1137     swscale_alpha
1138     texi2html
1139     thumb
1140     version3
1141     xmm_clobber_test
1142 "
1143
1144 THREADS_LIST='
1145     pthreads
1146     w32threads
1147 '
1148
1149 ATOMICS_LIST='
1150     atomics_gcc
1151     atomics_suncc
1152     atomics_win32
1153 '
1154
1155 ARCH_LIST='
1156     aarch64
1157     alpha
1158     arm
1159     avr32
1160     avr32_ap
1161     avr32_uc
1162     bfin
1163     ia64
1164     m68k
1165     mips
1166     mips64
1167     parisc
1168     ppc
1169     ppc64
1170     s390
1171     sh4
1172     sparc
1173     sparc64
1174     tilegx
1175     tilepro
1176     tomi
1177     x86
1178     x86_32
1179     x86_64
1180 '
1181
1182 ARCH_EXT_LIST_ARM='
1183     armv5te
1184     armv6
1185     armv6t2
1186     neon
1187     vfp
1188     vfpv3
1189 '
1190
1191 ARCH_EXT_LIST_X86='
1192     amd3dnow
1193     amd3dnowext
1194     avx
1195     avx2
1196     fma4
1197     i686
1198     mmx
1199     mmxext
1200     sse
1201     sse2
1202     sse3
1203     sse4
1204     sse42
1205     ssse3
1206 '
1207
1208 ARCH_EXT_LIST="
1209     $ARCH_EXT_LIST_ARM
1210     $ARCH_EXT_LIST_X86
1211     altivec
1212     ppc4xx
1213     vis
1214 "
1215
1216 HAVE_LIST_CMDLINE='
1217     inline_asm
1218     symver
1219     yasm
1220 '
1221
1222 HAVE_LIST_PUB='
1223     bigendian
1224     fast_unaligned
1225 '
1226
1227 MATH_FUNCS="
1228     atanf
1229     atan2f
1230     cbrtf
1231     cosf
1232     exp2
1233     exp2f
1234     expf
1235     isinf
1236     isnan
1237     ldexpf
1238     llrint
1239     llrintf
1240     log2
1241     log2f
1242     log10f
1243     lrint
1244     lrintf
1245     powf
1246     rint
1247     round
1248     roundf
1249     sinf
1250     trunc
1251     truncf
1252 "
1253
1254 HAVE_LIST="
1255     $ARCH_EXT_LIST
1256     $(add_suffix _external $ARCH_EXT_LIST)
1257     $(add_suffix _inline   $ARCH_EXT_LIST)
1258     $HAVE_LIST_CMDLINE
1259     $HAVE_LIST_PUB
1260     $THREADS_LIST
1261     $ATOMICS_LIST
1262     $MATH_FUNCS
1263     aligned_malloc
1264     aligned_stack
1265     alsa_asoundlib_h
1266     altivec_h
1267     arpa_inet_h
1268     asm_mod_q
1269     asm_mod_y
1270     atomic_cas_ptr
1271     atomics_native
1272     attribute_may_alias
1273     attribute_packed
1274     cdio_paranoia_h
1275     cdio_paranoia_paranoia_h
1276     closesocket
1277     CommandLineToArgvW
1278     cpunop
1279     CryptGenRandom
1280     dcbzl
1281     dev_bktr_ioctl_bt848_h
1282     dev_bktr_ioctl_meteor_h
1283     dev_ic_bt8xx_h
1284     dev_video_bktr_ioctl_bt848_h
1285     dev_video_meteor_ioctl_meteor_h
1286     direct_h
1287     dlfcn_h
1288     dlopen
1289     dos_paths
1290     dxva_h
1291     ebp_available
1292     ebx_available
1293     fast_64bit
1294     fast_clz
1295     fast_cmov
1296     fcntl
1297     fork
1298     getaddrinfo
1299     gethrtime
1300     getopt
1301     GetProcessAffinityMask
1302     GetProcessMemoryInfo
1303     GetProcessTimes
1304     GetSystemTimeAsFileTime
1305     getrusage
1306     getservbyport
1307     gettimeofday
1308     gnu_as
1309     gsm_h
1310     ibm_asm
1311     inet_aton
1312     io_h
1313     inline_asm_labels
1314     isatty
1315     jack_port_get_latency_range
1316     ldbrx
1317     libdc1394_1
1318     libdc1394_2
1319     local_aligned_16
1320     local_aligned_8
1321     localtime_r
1322     loongson
1323     machine_ioctl_bt848_h
1324     machine_ioctl_meteor_h
1325     machine_rw_barrier
1326     malloc_h
1327     MapViewOfFile
1328     memalign
1329     MemoryBarrier
1330     mkstemp
1331     mm_empty
1332     mmap
1333     mprotect
1334     msvcrt
1335     nanosleep
1336     poll_h
1337     posix_memalign
1338     pragma_deprecated
1339     rdtsc
1340     sched_getaffinity
1341     sdl
1342     SetConsoleTextAttribute
1343     setmode
1344     setrlimit
1345     Sleep
1346     sndio_h
1347     socklen_t
1348     soundcard_h
1349     strerror_r
1350     strptime
1351     strtok_r
1352     struct_addrinfo
1353     struct_group_source_req
1354     struct_ip_mreq_source
1355     struct_ipv6_mreq
1356     struct_pollfd
1357     struct_rusage_ru_maxrss
1358     struct_sockaddr_in6
1359     struct_sockaddr_sa_len
1360     struct_sockaddr_storage
1361     struct_v4l2_frmivalenum_discrete
1362     symver_asm_label
1363     symver_gnu_asm
1364     sync_val_compare_and_swap
1365     sysconf
1366     sysctl
1367     sys_mman_h
1368     sys_param_h
1369     sys_resource_h
1370     sys_select_h
1371     sys_soundcard_h
1372     sys_time_h
1373     sys_un_h
1374     sys_videoio_h
1375     threads
1376     unistd_h
1377     usleep
1378     vdpau_x11
1379     vfp_args
1380     VirtualAlloc
1381     windows_h
1382     winsock2_h
1383     xform_asm
1384     xlib
1385     xmm_clobbers
1386 "
1387
1388 # options emitted with CONFIG_ prefix but not available on the command line
1389 CONFIG_EXTRA="
1390     aandcttables
1391     ac3dsp
1392     audio_frame_queue
1393     dsputil
1394     gcrypt
1395     golomb
1396     gplv3
1397     h263dsp
1398     h264chroma
1399     h264dsp
1400     h264pred
1401     h264qpel
1402     hpeldsp
1403     huffman
1404     lgplv3
1405     lpc
1406     mpegaudio
1407     mpegaudiodsp
1408     mpegvideo
1409     mpegvideoenc
1410     nettle
1411     rangecoder
1412     riffdec
1413     riffenc
1414     rtpdec
1415     rtpenc_chain
1416     sinewin
1417     videodsp
1418     vp3dsp
1419 "
1420
1421 CMDLINE_SELECT="
1422     $ARCH_EXT_LIST
1423     $CONFIG_LIST
1424     $HAVE_LIST_CMDLINE
1425     $THREADS_LIST
1426     asm
1427     cross_compile
1428     debug
1429     extra_warnings
1430     logging
1431     lto
1432     optimizations
1433 "
1434
1435 PATHS_LIST='
1436     bindir
1437     datadir
1438     docdir
1439     incdir
1440     libdir
1441     mandir
1442     prefix
1443     shlibdir
1444 '
1445
1446 CMDLINE_SET="
1447     $PATHS_LIST
1448     ar
1449     arch
1450     as
1451     build_suffix
1452     cc
1453     cpu
1454     cross_prefix
1455     dep_cc
1456     extra_version
1457     host_cc
1458     host_cflags
1459     host_ld
1460     host_ldflags
1461     host_libs
1462     host_os
1463     ld
1464     logfile
1465     malloc_prefix
1466     nm
1467     optflags
1468     pkg_config
1469     random_seed
1470     samples
1471     sysinclude
1472     sysroot
1473     target_exec
1474     target_os
1475     target_path
1476     target_samples
1477     toolchain
1478 "
1479
1480 CMDLINE_APPEND="
1481     extra_cflags
1482     host_cppflags
1483 "
1484
1485 # code dependency declarations
1486
1487 # architecture extensions
1488
1489 armv5te_deps="arm"
1490 armv6_deps="arm"
1491 armv6t2_deps="arm"
1492 neon_deps="arm"
1493 vfp_deps="arm"
1494 vfpv3_deps="vfp"
1495
1496 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1497
1498 altivec_deps="ppc"
1499 ppc4xx_deps="ppc"
1500
1501 vis_deps="sparc"
1502
1503 cpunop_deps="i686"
1504 x86_64_select="i686"
1505 x86_64_suggest="fast_cmov"
1506
1507 amd3dnow_deps="mmx"
1508 amd3dnowext_deps="amd3dnow"
1509 mmx_deps="x86"
1510 mmxext_deps="mmx"
1511 sse_deps="mmxext"
1512 sse2_deps="sse"
1513 sse3_deps="sse2"
1514 ssse3_deps="sse3"
1515 sse4_deps="ssse3"
1516 sse42_deps="sse4"
1517 avx_deps="sse42"
1518 fma4_deps="avx"
1519 avx2_deps="avx"
1520
1521 mmx_external_deps="yasm"
1522 mmx_inline_deps="inline_asm"
1523 mmx_suggest="mmx_external mmx_inline"
1524
1525 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1526     eval dep=\$${ext}_deps
1527     eval ${ext}_external_deps='"${dep}_external"'
1528     eval ${ext}_inline_deps='"${dep}_inline"'
1529     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1530 done
1531
1532 aligned_stack_if_any="ppc x86"
1533 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1534 fast_clz_if_any="alpha avr32 mips ppc x86"
1535 fast_unaligned_if_any="ppc x86"
1536
1537 inline_asm_deps="!tms470"
1538 need_memalign="altivec neon sse"
1539
1540 symver_if_any="symver_asm_label symver_gnu_asm"
1541
1542 log2_deps="!msvcrt"
1543
1544 # subsystems
1545 dct_select="rdft"
1546 error_resilience_select="dsputil"
1547 lpc_select="dsputil"
1548 mdct_select="fft"
1549 rdft_select="fft"
1550 mpegaudio_select="mpegaudiodsp"
1551 mpegaudiodsp_select="dct"
1552 mpegvideo_select="dsputil hpeldsp videodsp"
1553 mpegvideoenc_select="mpegvideo"
1554
1555 # decoders / encoders
1556 aac_decoder_select="mdct sinewin"
1557 aac_encoder_select="audio_frame_queue mdct sinewin"
1558 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1559 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1560 ac3_encoder_select="mdct ac3dsp dsputil"
1561 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1562 aic_decoder_select="dsputil golomb"
1563 alac_encoder_select="lpc"
1564 als_decoder_select="dsputil"
1565 amrnb_decoder_select="lsp"
1566 amrwb_decoder_select="lsp"
1567 amv_decoder_select="dsputil hpeldsp"
1568 ape_decoder_select="dsputil"
1569 asv1_decoder_select="dsputil"
1570 asv1_encoder_select="dsputil"
1571 asv2_decoder_select="dsputil"
1572 asv2_encoder_select="dsputil"
1573 atrac1_decoder_select="mdct sinewin"
1574 atrac3_decoder_select="mdct"
1575 bink_decoder_select="dsputil hpeldsp"
1576 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1577 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1578 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1579 cllc_decoder_select="dsputil"
1580 comfortnoise_encoder_select="lpc"
1581 cook_decoder_select="dsputil mdct sinewin"
1582 cscd_decoder_select="lzo"
1583 cscd_decoder_suggest="zlib"
1584 dca_decoder_select="mdct"
1585 dnxhd_decoder_select="dsputil"
1586 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1587 dvvideo_decoder_select="dsputil"
1588 dvvideo_encoder_select="dsputil"
1589 dxa_decoder_deps="zlib"
1590 eac3_decoder_select="ac3_decoder"
1591 eac3_encoder_select="ac3_encoder"
1592 eamad_decoder_select="aandcttables dsputil mpegvideo"
1593 eatgq_decoder_select="aandcttables dsputil"
1594 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1595 ffv1_decoder_select="dsputil golomb rangecoder"
1596 ffv1_encoder_select="dsputil rangecoder"
1597 ffvhuff_decoder_select="dsputil"
1598 ffvhuff_encoder_select="dsputil huffman"
1599 flac_decoder_select="golomb"
1600 flac_encoder_select="dsputil golomb lpc"
1601 flashsv_decoder_deps="zlib"
1602 flashsv_encoder_deps="zlib"
1603 flashsv2_decoder_deps="zlib"
1604 flv_decoder_select="h263_decoder"
1605 flv_encoder_select="h263_encoder"
1606 fourxm_decoder_select="dsputil"
1607 fraps_decoder_select="dsputil huffman"
1608 g2m_decoder_deps="zlib"
1609 g2m_decoder_select="dsputil"
1610 h261_decoder_select="error_resilience mpegvideo"
1611 h261_encoder_select="aandcttables mpegvideoenc"
1612 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1613 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1614 h263i_decoder_select="h263_decoder"
1615 h263p_encoder_select="h263_encoder"
1616 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1617 h264_decoder_suggest="error_resilience"
1618 hevc_decoder_select="dsputil golomb videodsp"
1619 huffyuv_decoder_select="dsputil"
1620 huffyuv_encoder_select="dsputil huffman"
1621 iac_decoder_select="dsputil fft mdct sinewin"
1622 imc_decoder_select="dsputil fft mdct sinewin"
1623 indeo3_decoder_select="hpeldsp"
1624 interplay_video_decoder_select="hpeldsp"
1625 jpegls_decoder_select="dsputil golomb hpeldsp"
1626 jpegls_encoder_select="golomb"
1627 jv_decoder_select="dsputil"
1628 lagarith_decoder_select="dsputil"
1629 ljpeg_encoder_select="aandcttables mpegvideoenc"
1630 loco_decoder_select="golomb"
1631 mdec_decoder_select="dsputil error_resilience mpegvideo"
1632 metasound_decoder_select="lsp mdct sinewin"
1633 mimic_decoder_select="dsputil hpeldsp"
1634 mjpeg_decoder_select="dsputil hpeldsp"
1635 mjpegb_decoder_select="dsputil hpeldsp"
1636 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1637 mlp_decoder_select="dsputil mlp_parser"
1638 motionpixels_decoder_select="dsputil"
1639 mp1_decoder_select="mpegaudio"
1640 mp1float_decoder_select="mpegaudio"
1641 mp2_decoder_select="mpegaudio"
1642 mp2float_decoder_select="mpegaudio"
1643 mp3_decoder_select="mpegaudio"
1644 mp3adu_decoder_select="mpegaudio"
1645 mp3adufloat_decoder_select="mpegaudio"
1646 mp3float_decoder_select="mpegaudio"
1647 mp3on4_decoder_select="mpegaudio"
1648 mp3on4float_decoder_select="mpegaudio"
1649 mpc7_decoder_select="dsputil mpegaudiodsp"
1650 mpc8_decoder_select="dsputil mpegaudiodsp"
1651 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1652 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1653 mpeg1video_decoder_select="error_resilience mpegvideo"
1654 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1655 mpeg2video_decoder_select="error_resilience mpegvideo"
1656 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1657 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1658 mpeg4_encoder_select="h263_encoder"
1659 msmpeg4v1_decoder_select="h263_decoder"
1660 msmpeg4v2_decoder_select="h263_decoder"
1661 msmpeg4v2_encoder_select="h263_encoder"
1662 msmpeg4v3_decoder_select="h263_decoder"
1663 msmpeg4v3_encoder_select="h263_encoder"
1664 mss2_decoder_select="error_resilience vc1_decoder"
1665 mxpeg_decoder_select="dsputil hpeldsp"
1666 nellymoser_decoder_select="mdct sinewin"
1667 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1668 nuv_decoder_select="dsputil lzo"
1669 png_decoder_deps="zlib"
1670 png_decoder_select="dsputil"
1671 png_encoder_deps="zlib"
1672 png_encoder_select="dsputil"
1673 prores_decoder_select="dsputil"
1674 prores_encoder_select="dsputil"
1675 qcelp_decoder_select="lsp"
1676 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1677 ra_144_encoder_select="audio_frame_queue lpc"
1678 ralf_decoder_select="golomb"
1679 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1680 rv10_encoder_select="h263_encoder"
1681 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1682 rv20_encoder_select="h263_encoder"
1683 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1684 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1685 shorten_decoder_select="golomb"
1686 sipr_decoder_select="lsp"
1687 sp5x_decoder_select="dsputil hpeldsp"
1688 svq1_decoder_select="hpeldsp"
1689 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1690 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1691 svq3_decoder_suggest="error_resilience zlib"
1692 tak_decoder_select="dsputil"
1693 theora_decoder_select="vp3_decoder"
1694 tiff_decoder_suggest="zlib"
1695 tiff_encoder_suggest="zlib"
1696 thp_decoder_select="dsputil hpeldsp"
1697 truehd_decoder_select="mlp_decoder"
1698 truemotion2_decoder_select="dsputil"
1699 truespeech_decoder_select="dsputil"
1700 tscc_decoder_deps="zlib"
1701 twinvq_decoder_select="mdct lsp sinewin"
1702 utvideo_decoder_select="dsputil"
1703 utvideo_encoder_select="dsputil huffman"
1704 vble_decoder_select="dsputil"
1705 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1706 vc1image_decoder_select="vc1_decoder"
1707 vorbis_decoder_select="mdct"
1708 vorbis_encoder_select="mdct"
1709 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1710 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1711 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1712 vp6a_decoder_select="vp6_decoder"
1713 vp6f_decoder_select="vp6_decoder"
1714 vp8_decoder_select="h264pred videodsp"
1715 vp9_decoder_select="videodsp"
1716 webp_decoder_select="vp8_decoder"
1717 wmapro_decoder_select="mdct sinewin"
1718 wmav1_decoder_select="mdct sinewin"
1719 wmav1_encoder_select="mdct sinewin"
1720 wmav2_decoder_select="mdct sinewin"
1721 wmav2_encoder_select="mdct sinewin"
1722 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1723 wmv1_decoder_select="h263_decoder"
1724 wmv1_encoder_select="h263_encoder"
1725 wmv2_decoder_select="h263_decoder videodsp"
1726 wmv2_encoder_select="h263_encoder"
1727 wmv3_decoder_select="vc1_decoder"
1728 wmv3image_decoder_select="wmv3_decoder"
1729 zerocodec_decoder_deps="zlib"
1730 zlib_decoder_deps="zlib"
1731 zlib_encoder_deps="zlib"
1732 zmbv_decoder_deps="zlib"
1733 zmbv_encoder_deps="zlib"
1734
1735 # hardware accelerators
1736 dxva2_deps="dxva2api_h"
1737 vaapi_deps="va_va_h"
1738 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1739 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1740 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1741
1742 h263_vaapi_hwaccel_deps="vaapi"
1743 h263_vaapi_hwaccel_select="h263_decoder"
1744 h263_vdpau_hwaccel_deps="vdpau"
1745 h263_vdpau_hwaccel_select="h263_decoder"
1746 h264_dxva2_hwaccel_deps="dxva2"
1747 h264_dxva2_hwaccel_select="h264_decoder"
1748 h264_vaapi_hwaccel_deps="vaapi"
1749 h264_vaapi_hwaccel_select="h264_decoder"
1750 h264_vda_hwaccel_deps="vda"
1751 h264_vda_hwaccel_select="h264_decoder"
1752 h264_vdpau_hwaccel_deps="vdpau"
1753 h264_vdpau_hwaccel_select="h264_decoder"
1754 mpeg1_vdpau_hwaccel_deps="vdpau"
1755 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1756 mpeg2_dxva2_hwaccel_deps="dxva2"
1757 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1758 mpeg2_vaapi_hwaccel_deps="vaapi"
1759 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1760 mpeg2_vdpau_hwaccel_deps="vdpau"
1761 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1762 mpeg4_vaapi_hwaccel_deps="vaapi"
1763 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1764 mpeg4_vdpau_hwaccel_deps="vdpau"
1765 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1766 vc1_dxva2_hwaccel_deps="dxva2"
1767 vc1_dxva2_hwaccel_select="vc1_decoder"
1768 vc1_vaapi_hwaccel_deps="vaapi"
1769 vc1_vaapi_hwaccel_select="vc1_decoder"
1770 vc1_vdpau_hwaccel_deps="vdpau"
1771 vc1_vdpau_hwaccel_select="vc1_decoder"
1772 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1773 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1774 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1775
1776 # parsers
1777 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1778 mpeg4video_parser_select="error_resilience mpegvideo"
1779 mpegvideo_parser_select="error_resilience mpegvideo"
1780 vc1_parser_select="mpegvideo"
1781
1782 # external libraries
1783 libfaac_encoder_deps="libfaac"
1784 libfaac_encoder_select="audio_frame_queue"
1785 libfdk_aac_decoder_deps="libfdk_aac"
1786 libfdk_aac_encoder_deps="libfdk_aac"
1787 libfdk_aac_encoder_select="audio_frame_queue"
1788 libgsm_decoder_deps="libgsm"
1789 libgsm_encoder_deps="libgsm"
1790 libgsm_ms_decoder_deps="libgsm"
1791 libgsm_ms_encoder_deps="libgsm"
1792 libilbc_decoder_deps="libilbc"
1793 libilbc_encoder_deps="libilbc"
1794 libmp3lame_encoder_deps="libmp3lame"
1795 libmp3lame_encoder_select="audio_frame_queue"
1796 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1797 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1798 libopencore_amrnb_encoder_select="audio_frame_queue"
1799 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1800 libopenjpeg_decoder_deps="libopenjpeg"
1801 libopenjpeg_encoder_deps="libopenjpeg"
1802 libopus_decoder_deps="libopus"
1803 libopus_encoder_deps="libopus"
1804 libopus_encoder_select="audio_frame_queue"
1805 libschroedinger_decoder_deps="libschroedinger"
1806 libschroedinger_encoder_deps="libschroedinger"
1807 libspeex_decoder_deps="libspeex"
1808 libspeex_encoder_deps="libspeex"
1809 libspeex_encoder_select="audio_frame_queue"
1810 libtheora_encoder_deps="libtheora"
1811 libvo_aacenc_encoder_deps="libvo_aacenc"
1812 libvo_aacenc_encoder_select="audio_frame_queue"
1813 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1814 libvorbis_encoder_deps="libvorbis"
1815 libvorbis_encoder_select="audio_frame_queue"
1816 libvpx_vp8_decoder_deps="libvpx"
1817 libvpx_vp8_encoder_deps="libvpx"
1818 libvpx_vp9_decoder_deps="libvpx"
1819 libvpx_vp9_encoder_deps="libvpx"
1820 libwavpack_encoder_deps="libwavpack"
1821 libx264_encoder_deps="libx264"
1822 libxavs_encoder_deps="libxavs"
1823 libxvid_encoder_deps="libxvid"
1824
1825 # demuxers / muxers
1826 ac3_demuxer_select="ac3_parser"
1827 asf_demuxer_select="riffdec"
1828 asf_muxer_select="riffenc"
1829 asf_stream_muxer_select="asf_muxer"
1830 avi_demuxer_select="riffdec"
1831 avi_muxer_select="riffenc"
1832 avisynth_demuxer_deps="avisynth"
1833 avisynth_demuxer_select="riffdec"
1834 caf_demuxer_select="riffdec"
1835 dirac_demuxer_select="dirac_parser"
1836 dxa_demuxer_select="riffdec"
1837 eac3_demuxer_select="ac3_parser"
1838 f4v_muxer_select="mov_muxer"
1839 flac_demuxer_select="flac_parser"
1840 hds_muxer_select="flv_muxer"
1841 hls_muxer_select="mpegts_muxer"
1842 ipod_muxer_select="mov_muxer"
1843 ismv_muxer_select="mov_muxer"
1844 matroska_audio_muxer_select="matroska_muxer"
1845 matroska_demuxer_select="riffdec"
1846 matroska_demuxer_suggest="bzlib lzo zlib"
1847 matroska_muxer_select="riffenc"
1848 mmf_muxer_select="riffenc"
1849 mov_demuxer_select="riffdec"
1850 mov_demuxer_suggest="zlib"
1851 mov_muxer_select="riffenc rtpenc_chain"
1852 mp3_demuxer_select="mpegaudio_parser"
1853 mp4_muxer_select="mov_muxer"
1854 mpegts_muxer_select="adts_muxer latm_muxer"
1855 mpegtsraw_demuxer_select="mpegts_demuxer"
1856 mxf_d10_muxer_select="mxf_muxer"
1857 nut_muxer_select="riffenc"
1858 nuv_demuxer_select="riffdec"
1859 ogg_demuxer_select="golomb"
1860 psp_muxer_select="mov_muxer"
1861 rtp_demuxer_select="sdp_demuxer"
1862 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1863 rtsp_demuxer_select="http_protocol rtpdec"
1864 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1865 sap_demuxer_select="sdp_demuxer"
1866 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1867 sdp_demuxer_select="rtpdec"
1868 smoothstreaming_muxer_select="ismv_muxer"
1869 spdif_muxer_select="aac_parser"
1870 tak_demuxer_select="tak_parser"
1871 tg2_muxer_select="mov_muxer"
1872 tgp_muxer_select="mov_muxer"
1873 w64_demuxer_select="wav_demuxer"
1874 wav_demuxer_select="riffdec"
1875 wav_muxer_select="riffenc"
1876 webm_muxer_select="riffenc"
1877 wtv_demuxer_select="riffdec"
1878 xmv_demuxer_select="riffdec"
1879 xwma_demuxer_select="riffdec"
1880
1881 # indevs / outdevs
1882 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1883 alsa_outdev_deps="alsa_asoundlib_h"
1884 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1885 dv1394_indev_deps="dv1394"
1886 dv1394_indev_select="dv_demuxer"
1887 fbdev_indev_deps="linux_fb_h"
1888 jack_indev_deps="jack_jack_h pthreads"
1889 libcdio_indev_deps="libcdio"
1890 libdc1394_indev_deps="libdc1394"
1891 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1892 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1893 pulse_indev_deps="libpulse"
1894 sndio_indev_deps="sndio_h"
1895 sndio_outdev_deps="sndio_h"
1896 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1897 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1898 vfwcap_indev_extralibs="-lavicap32"
1899 x11grab_indev_deps="x11grab XShmCreateImage"
1900
1901 # protocols
1902 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1903 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1904 ffrtmpcrypt_protocol_select="tcp_protocol"
1905 ffrtmphttp_protocol_deps="!librtmp_protocol"
1906 ffrtmphttp_protocol_select="http_protocol"
1907 gopher_protocol_select="network"
1908 httpproxy_protocol_select="tcp_protocol"
1909 http_protocol_select="tcp_protocol"
1910 https_protocol_select="tls_protocol"
1911 librtmp_protocol_deps="librtmp"
1912 librtmpe_protocol_deps="librtmp"
1913 librtmps_protocol_deps="librtmp"
1914 librtmpt_protocol_deps="librtmp"
1915 librtmpte_protocol_deps="librtmp"
1916 mmsh_protocol_select="http_protocol"
1917 mmst_protocol_select="network"
1918 rtmp_protocol_deps="!librtmp_protocol"
1919 rtmp_protocol_select="tcp_protocol"
1920 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1921 rtmps_protocol_deps="!librtmp_protocol"
1922 rtmps_protocol_select="tls_protocol"
1923 rtmpt_protocol_select="ffrtmphttp_protocol"
1924 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1925 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1926 rtp_protocol_select="udp_protocol"
1927 sctp_protocol_deps="struct_sctp_event_subscribe"
1928 sctp_protocol_select="network"
1929 srtp_protocol_select="rtp_protocol"
1930 tcp_protocol_select="network"
1931 tls_protocol_deps_any="openssl gnutls"
1932 tls_protocol_select="tcp_protocol"
1933 udp_protocol_select="network"
1934 unix_protocol_deps="sys_un_h"
1935 unix_protocol_select="network"
1936
1937 # filters
1938 blackframe_filter_deps="gpl"
1939 boxblur_filter_deps="gpl"
1940 cropdetect_filter_deps="gpl"
1941 delogo_filter_deps="gpl"
1942 drawtext_filter_deps="libfreetype"
1943 frei0r_filter_deps="frei0r dlopen strtok_r"
1944 frei0r_filter_extralibs='$ldl'
1945 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1946 frei0r_src_filter_extralibs='$ldl'
1947 hqdn3d_filter_deps="gpl"
1948 interlace_filter_deps="gpl"
1949 resample_filter_deps="avresample"
1950 ocv_filter_deps="libopencv"
1951 scale_filter_deps="swscale"
1952 yadif_filter_deps="gpl"
1953
1954 # examples
1955 output_example_deps="avcodec avformat avutil swscale"
1956 transcode_aac_example_deps="avcodec avformat avresample"
1957
1958 # libraries
1959 avcodec_deps="avutil"
1960 avdevice_deps="avutil avcodec avformat"
1961 avfilter_deps="avutil"
1962 avformat_deps="avutil avcodec"
1963 avresample_deps="avutil"
1964 swscale_deps="avutil"
1965
1966 # programs
1967 avconv_deps="avcodec avfilter avformat avresample swscale"
1968 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
1969                fps_filter null_filter resample_filter scale_filter
1970                setpts_filter trim_filter"
1971 avplay_deps="avcodec avformat avresample swscale sdl"
1972 avplay_select="rdft"
1973 avprobe_deps="avcodec avformat"
1974 avserver_deps="avformat fork !shared"
1975 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
1976 avserver_extralibs='$ldl'
1977
1978 # documentation
1979 pod2man_deps="doc"
1980 texi2html_deps="doc"
1981
1982 # default parameters
1983
1984 logfile="config.log"
1985
1986 # installation paths
1987 prefix_default="/usr/local"
1988 bindir_default='${prefix}/bin'
1989 datadir_default='${prefix}/share/avconv'
1990 docdir_default='${prefix}/share/doc/libav'
1991 incdir_default='${prefix}/include'
1992 libdir_default='${prefix}/lib'
1993 mandir_default='${prefix}/share/man'
1994 shlibdir_default="$libdir_default"
1995
1996 # toolchain
1997 ar_default="ar"
1998 cc_default="gcc"
1999 host_cc_default="gcc"
2000 cp_f="cp -f"
2001 ln_s="ln -s -f"
2002 nm_default="nm -g"
2003 objformat="elf"
2004 pkg_config_default=pkg-config
2005 ranlib="ranlib"
2006 strip="strip"
2007 yasmexe="yasm"
2008
2009 nogas=":"
2010
2011 # machine
2012 arch_default=$(uname -m)
2013 cpu="generic"
2014
2015 # OS
2016 target_os_default=$(tolower $(uname -s))
2017 host_os=$target_os_default
2018
2019 # configurable options
2020 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2021
2022 enable asm
2023 enable debug
2024 enable doc
2025 enable optimizations
2026 enable safe_bitstream_reader
2027 enable static
2028 enable swscale_alpha
2029
2030 # By default, enable only those hwaccels that have no external dependencies.
2031 enable dxva2 vdpau
2032
2033 # build settings
2034 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2035 LIBPREF="lib"
2036 LIBSUF=".a"
2037 FULLNAME='$(NAME)$(BUILDSUF)'
2038 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2039 SLIBPREF="lib"
2040 SLIBSUF=".so"
2041 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2042 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2043 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2044 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2045 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2046 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2047
2048 asflags_filter=echo
2049 cflags_filter=echo
2050 ldflags_filter=echo
2051
2052 AS_C='-c'
2053 AS_O='-o $@'
2054 CC_C='-c'
2055 CC_E='-E -o $@'
2056 CC_O='-o $@'
2057 LD_O='-o $@'
2058 LD_LIB='-l%'
2059 LD_PATH='-L'
2060 HOSTCC_C='-c'
2061 HOSTCC_O='-o $@'
2062 HOSTLD_O='-o $@'
2063
2064 host_cflags='-O3 -g'
2065 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2066 host_libs='-lm'
2067 host_cflags_filter=echo
2068 host_ldflags_filter=echo
2069
2070 target_path='$(CURDIR)'
2071
2072 # since the object filename is not given with the -MM flag, the compiler
2073 # is only able to print the basename, and we must add the path ourselves
2074 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2075 DEPFLAGS='-MM'
2076
2077 # find source path
2078 if test -f configure; then
2079     source_path=.
2080 else
2081     source_path=$(cd $(dirname "$0"); pwd)
2082     echo "$source_path" | grep -q '[[:blank:]]' &&
2083         die "Out of tree builds are impossible with whitespace in source path."
2084     test -e "$source_path/config.h" &&
2085         die "Out of tree builds are impossible with config.h in source dir."
2086 fi
2087
2088 for v in "$@"; do
2089     r=${v#*=}
2090     l=${v%"$r"}
2091     r=$(sh_quote "$r")
2092     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2093 done
2094
2095 find_things(){
2096     thing=$1
2097     pattern=$2
2098     file=$source_path/$3
2099     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2100 }
2101
2102 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2103 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2104 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2105 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2106 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2107 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2108 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2109 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2110 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2111 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2112 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2113
2114 ALL_COMPONENTS="
2115     $BSF_LIST
2116     $DECODER_LIST
2117     $DEMUXER_LIST
2118     $ENCODER_LIST
2119     $FILTER_LIST
2120     $HWACCEL_LIST
2121     $INDEV_LIST
2122     $MUXER_LIST
2123     $OUTDEV_LIST
2124     $PARSER_LIST
2125     $PROTOCOL_LIST
2126 "
2127
2128 for n in $COMPONENT_LIST; do
2129     v=$(toupper ${n%s})_LIST
2130     eval enable \$$v
2131     eval ${n}_if_any="\$$v"
2132 done
2133
2134 enable $ARCH_EXT_LIST
2135
2136 die_unknown(){
2137     echo "Unknown option \"$1\"."
2138     echo "See $0 --help for available options."
2139     exit 1
2140 }
2141
2142 print_3_columns() {
2143     cat | tr ' ' '\n' | sort | pr -r -3 -t
2144 }
2145
2146 show_list() {
2147     suffix=_$1
2148     shift
2149     echo $* | sed s/$suffix//g | print_3_columns
2150     exit 0
2151 }
2152
2153 rand_list(){
2154     IFS=', '
2155     set -- $*
2156     unset IFS
2157     for thing; do
2158         comp=${thing%:*}
2159         prob=${thing#$comp}
2160         prob=${prob#:}
2161         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2162         echo "prob ${prob:-0.5}"
2163         printf '%s\n' $comp
2164     done
2165 }
2166
2167 do_random(){
2168     action=$1
2169     shift
2170     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2171     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2172 }
2173
2174 for opt do
2175     optval="${opt#*=}"
2176     case "$opt" in
2177         --extra-ldflags=*)
2178             add_ldflags $optval
2179         ;;
2180         --extra-libs=*)
2181             add_extralibs $optval
2182         ;;
2183         --disable-devices)
2184             disable $INDEV_LIST $OUTDEV_LIST
2185         ;;
2186         --enable-debug=*)
2187             debuglevel="$optval"
2188         ;;
2189         --disable-programs)
2190             disable $PROGRAM_LIST
2191         ;;
2192         --disable-everything)
2193             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2194         ;;
2195         --disable-all)
2196             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2197             disable $LIBRARY_LIST $PROGRAM_LIST doc
2198         ;;
2199         --enable-random|--disable-random)
2200             action=${opt%%-random}
2201             do_random ${action#--} $COMPONENT_LIST
2202         ;;
2203         --enable-random=*|--disable-random=*)
2204             action=${opt%%-random=*}
2205             do_random ${action#--} $optval
2206         ;;
2207         --enable-*=*|--disable-*=*)
2208             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2209             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2210             eval list=\$$(toupper $thing)_LIST
2211             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2212             $action $(filter "$name" $list)
2213         ;;
2214         --enable-?*|--disable-?*)
2215             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2216             if is_in $option $COMPONENT_LIST; then
2217                 test $action = disable && action=unset
2218                 eval $action \$$(toupper ${option%s})_LIST
2219             elif is_in $option $CMDLINE_SELECT; then
2220                 $action $option
2221             else
2222                 die_unknown $opt
2223             fi
2224         ;;
2225         --list-*)
2226             NAME="${opt#--list-}"
2227             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2228             NAME=${NAME%s}
2229             eval show_list $NAME \$$(toupper $NAME)_LIST
2230         ;;
2231         --help|-h) show_help
2232         ;;
2233         *)
2234             optname="${opt%%=*}"
2235             optname="${optname#--}"
2236             optname=$(echo "$optname" | sed 's/-/_/g')
2237             if is_in $optname $CMDLINE_SET; then
2238                 eval $optname='$optval'
2239             elif is_in $optname $CMDLINE_APPEND; then
2240                 append $optname "$optval"
2241             else
2242                 die_unknown $opt
2243             fi
2244         ;;
2245     esac
2246 done
2247
2248 disabled logging && logfile=/dev/null
2249
2250 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2251 set >> $logfile
2252
2253 test -n "$cross_prefix" && enable cross_compile
2254
2255 if enabled cross_compile; then
2256     test -n "$arch" && test -n "$target_os" ||
2257         die "Must specify target arch and OS when cross-compiling"
2258 fi
2259
2260 ar_default="${cross_prefix}${ar_default}"
2261 cc_default="${cross_prefix}${cc_default}"
2262 nm_default="${cross_prefix}${nm_default}"
2263 pkg_config_default="${cross_prefix}${pkg_config_default}"
2264 ranlib="${cross_prefix}${ranlib}"
2265 strip="${cross_prefix}${strip}"
2266
2267 sysinclude_default="${sysroot}/usr/include"
2268
2269 case "$toolchain" in
2270     clang-asan)
2271         cc_default="clang"
2272         add_cflags  -fsanitize=address
2273         add_ldflags -fsanitize=address
2274     ;;
2275     clang-tsan)
2276         cc_default="clang"
2277         add_cflags  -fsanitize=thread -pie
2278         add_ldflags -fsanitize=thread -pie
2279     ;;
2280     gcc-asan)
2281         cc_default="gcc"
2282         add_cflags  -fsanitize=address
2283         add_ldflags -fsanitize=address
2284     ;;
2285     gcc-tsan)
2286         cc_default="gcc"
2287         add_cflags  -fsanitize=thread -pie -fPIC
2288         add_ldflags -fsanitize=thread -pie -fPIC
2289     ;;
2290     valgrind-massif)
2291         target_exec_default="valgrind"
2292         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2293     ;;
2294     valgrind-memcheck)
2295         target_exec_default="valgrind"
2296         target_exec_args="--track-origins=yes --leak-check=full"
2297     ;;
2298     msvc)
2299         # Check whether the current MSVC version needs the C99 converter.
2300         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2301         # support enough of C99 to build libav. Default to the new
2302         # behaviour if the regexp was unable to match anything, since this
2303         # successfully parses the version number of existing supported
2304         # versions that require the converter (MSVC 2010 and 2012).
2305         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2306         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2307             cc_default="cl"
2308         else
2309             cc_default="c99wrap cl"
2310         fi
2311         ld_default="link"
2312         nm_default="dumpbin -symbols"
2313         ar_default="lib"
2314         target_os_default="win32"
2315         # Use a relative path for TMPDIR. This makes sure all the
2316         # ffconf temp files are written with a relative path, avoiding
2317         # issues with msys/win32 path conversion for MSVC parameters
2318         # such as -Fo<file> or -out:<file>.
2319         TMPDIR=.
2320     ;;
2321     icl)
2322         cc_default="icl"
2323         ld_default="xilink"
2324         nm_default="dumpbin -symbols"
2325         ar_default="xilib"
2326         target_os_default="win32"
2327         TMPDIR=.
2328     ;;
2329     gcov)
2330         add_cflags  -fprofile-arcs -ftest-coverage
2331         add_ldflags -fprofile-arcs -ftest-coverage
2332     ;;
2333     hardened)
2334         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2335         add_ldflags -Wl,-z,relro -Wl,-z,now
2336     ;;
2337     ?*)
2338         die "Unknown toolchain $toolchain"
2339     ;;
2340 esac
2341
2342 set_default arch cc pkg_config sysinclude target_exec target_os
2343 enabled cross_compile || host_cc_default=$cc
2344 set_default host_cc
2345
2346 if ! $pkg_config --version >/dev/null 2>&1; then
2347     warn "$pkg_config not found, library detection may fail."
2348     pkg_config=false
2349 fi
2350
2351 exesuf() {
2352     case $1 in
2353         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2354     esac
2355 }
2356
2357 EXESUF=$(exesuf $target_os)
2358 HOSTEXESUF=$(exesuf $host_os)
2359
2360 # set temporary file name
2361 : ${TMPDIR:=$TEMPDIR}
2362 : ${TMPDIR:=$TMP}
2363 : ${TMPDIR:=/tmp}
2364
2365 if ! check_cmd mktemp -u XXXXXX; then
2366     # simple replacement for missing mktemp
2367     # NOT SAFE FOR GENERAL USE
2368     mktemp(){
2369         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2370     }
2371 fi
2372
2373 tmpfile(){
2374     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2375         (set -C; exec > $tmp) 2>/dev/null ||
2376         die "Unable to create temporary file in $TMPDIR."
2377     append TMPFILES $tmp
2378     eval $1=$tmp
2379 }
2380
2381 trap 'rm -f -- $TMPFILES' EXIT
2382
2383 tmpfile TMPASM .asm
2384 tmpfile TMPC   .c
2385 tmpfile TMPE   $EXESUF
2386 tmpfile TMPH   .h
2387 tmpfile TMPO   .o
2388 tmpfile TMPS   .S
2389 tmpfile TMPSH  .sh
2390 tmpfile TMPV   .ver
2391
2392 unset -f mktemp
2393
2394 chmod +x $TMPE
2395
2396 # make sure we can execute files in $TMPDIR
2397 cat > $TMPSH 2>> $logfile <<EOF
2398 #! /bin/sh
2399 EOF
2400 chmod +x $TMPSH >> $logfile 2>&1
2401 if ! $TMPSH >> $logfile 2>&1; then
2402     cat <<EOF
2403 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2404 variable to another directory and make sure that it is not mounted noexec.
2405 EOF
2406     die "Sanity test failed."
2407 fi
2408
2409 ccc_flags(){
2410     for flag; do
2411         case $flag in
2412             -std=c99)           echo -c99                       ;;
2413             -mcpu=*)            echo -arch ${flag#*=}           ;;
2414             -mieee)             echo -ieee                      ;;
2415             -O*|-fast)          echo $flag                      ;;
2416             -fno-math-errno)    echo -assume nomath_errno       ;;
2417             -g)                 echo -g3                        ;;
2418             -Wall)              echo -msg_enable level2         ;;
2419             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2420             -Wl,*)              echo $flag                      ;;
2421             -f*|-W*)                                            ;;
2422             *)                  echo $flag                      ;;
2423         esac
2424    done
2425 }
2426
2427 cparser_flags(){
2428     for flag; do
2429         case $flag in
2430             -Wno-switch)             echo -Wno-switch-enum ;;
2431             -Wno-format-zero-length) ;;
2432             -Wdisabled-optimization) ;;
2433             -Wno-pointer-sign)       echo -Wno-other ;;
2434             *)                       echo $flag ;;
2435         esac
2436     done
2437 }
2438
2439 msvc_common_flags(){
2440     for flag; do
2441         case $flag in
2442             # In addition to specifying certain flags under the compiler
2443             # specific filters, they must be specified here as well or else the
2444             # generic catch all at the bottom will print the original flag.
2445             -Wall)                ;;
2446             -std=c99)             ;;
2447             # Common flags
2448             -fomit-frame-pointer) ;;
2449             -g)                   echo -Z7 ;;
2450             -fno-math-errno)      ;;
2451             -fno-common)          ;;
2452             -fno-signed-zeros)    ;;
2453             -fPIC)                ;;
2454             -mthumb)              ;;
2455             -march=*)             ;;
2456             -lz)                  echo zlib.lib ;;
2457             -lavifil32)           echo vfw32.lib ;;
2458             -lavicap32)           echo vfw32.lib user32.lib ;;
2459             -l*)                  echo ${flag#-l}.lib ;;
2460             *)                    echo $flag ;;
2461         esac
2462     done
2463 }
2464
2465 msvc_flags(){
2466     msvc_common_flags "$@"
2467     for flag; do
2468         case $flag in
2469             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2470                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2471                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2472                                        -wd4273 ;;
2473         esac
2474     done
2475 }
2476
2477 icl_flags(){
2478     msvc_common_flags "$@"
2479     for flag; do
2480         case $flag in
2481             # Despite what Intel's documentation says -Wall, which is supported
2482             # on Windows, does enable remarks so disable them here.
2483             -Wall)                echo $flag -Qdiag-disable:remark ;;
2484             -std=c99)             echo -Qstd=c99 ;;
2485         esac
2486     done
2487 }
2488
2489 pgi_flags(){
2490     for flag; do
2491         case $flag in
2492             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2493             -fomit-frame-pointer) echo -Mnoframe ;;
2494             -g)                   echo -gopt ;;
2495             *)                    echo $flag ;;
2496         esac
2497     done
2498 }
2499
2500 suncc_flags(){
2501     for flag; do
2502         case $flag in
2503             -march=*|-mcpu=*)
2504                 case "${flag#*=}" in
2505                     native)                   echo -xtarget=native       ;;
2506                     v9|niagara)               echo -xarch=sparc          ;;
2507                     ultrasparc)               echo -xarch=sparcvis       ;;
2508                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2509                     i586|pentium)             echo -xchip=pentium        ;;
2510                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2511                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2512                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2513                     pentium4*)          echo -xtarget=pentium4           ;;
2514                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2515                     *-sse3)             echo -xarch=sse3                 ;;
2516                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2517                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2518                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2519                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2520                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2521                     k8|opteron|athlon64|athlon-fx)
2522                                                echo -xarch=sse2a         ;;
2523                     athlon*)                   echo -xarch=pentium_proa  ;;
2524                 esac
2525                 ;;
2526             -std=c99)             echo -xc99              ;;
2527             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2528             -fPIC)                echo -KPIC -xcode=pic32 ;;
2529             -W*,*)                echo $flag              ;;
2530             -f*-*|-W*|-mimpure-text)                      ;;
2531             -shared)              echo -G                 ;;
2532             *)                    echo $flag              ;;
2533         esac
2534     done
2535 }
2536
2537 tms470_flags(){
2538     for flag; do
2539         case $flag in
2540             -march=*|-mcpu=*)
2541                 case "${flag#*=}" in
2542                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2543                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2544                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2545                     armv6*|arm11*)          echo -mv=6   ;;
2546                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2547                                             echo -mv=5e  ;;
2548                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2549                 esac
2550                 ;;
2551             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2552             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2553             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2554             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2555             -msoft-float)   echo --float_support=vfplib       ;;
2556             -O[0-3]|-mf=*)  echo $flag                        ;;
2557             -g)             echo -g -mn                       ;;
2558             -pds=*)         echo $flag                        ;;
2559             -D*|-I*)        echo $flag                        ;;
2560             --gcc|--abi=*)  echo $flag                        ;;
2561             -me)            echo $flag                        ;;
2562         esac
2563     done
2564 }
2565
2566 probe_cc(){
2567     pfx=$1
2568     _cc=$2
2569
2570     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2571     unset _ld_o _ldflags _ld_lib _ld_path
2572     unset _depflags _DEPCMD _DEPFLAGS
2573     _flags_filter=echo
2574
2575     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2576         _type=llvm_gcc
2577         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2578         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2579         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2580         _cflags_speed='-O3'
2581         _cflags_size='-Os'
2582     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2583         _type=gcc
2584         gcc_version=$($_cc --version | head -n1)
2585         gcc_basever=$($_cc -dumpversion)
2586         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2587         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2588         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2589         if ! $_cc -dumpversion | grep -q '^2\.'; then
2590             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2591         fi
2592         _cflags_speed='-O3'
2593         _cflags_size='-Os'
2594     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2595         _type=icc
2596         _ident=$($_cc --version | head -n1)
2597         _depflags='-MMD'
2598         _cflags_speed='-O3'
2599         _cflags_size='-Os'
2600         _cflags_noopt='-O1'
2601     elif $_cc -v 2>&1 | grep -q xlc; then
2602         _type=xlc
2603         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2604         _cflags_speed='-O5'
2605         _cflags_size='-O5 -qcompact'
2606     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2607         _type=ccc
2608         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2609         _DEPFLAGS='-M'
2610         _cflags_speed='-fast'
2611         _cflags_size='-O1'
2612         _flags_filter=ccc_flags
2613     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2614         test -d "$sysroot" || die "No valid sysroot specified."
2615         _type=armcc
2616         _ident=$($_cc --vsn | head -n1)
2617         armcc_conf="$PWD/armcc.conf"
2618         $_cc --arm_linux_configure                 \
2619              --arm_linux_config_file="$armcc_conf" \
2620              --configure_sysroot="$sysroot"        \
2621              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2622              die "Error creating armcc configuration file."
2623         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2624         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2625         as_default="${cross_prefix}gcc"
2626         _depflags='-MMD'
2627         _cflags_speed='-O3'
2628         _cflags_size='-Os'
2629     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2630         _type=tms470
2631         _ident=$($_cc -version | head -n1 | tr -s ' ')
2632         _flags='--gcc --abi=eabi -me'
2633         _cc_e='-ppl -fe=$@'
2634         _cc_o='-fe=$@'
2635         _depflags='-ppa -ppd=$(@:.o=.d)'
2636         _cflags_speed='-O3 -mf=5'
2637         _cflags_size='-O3 -mf=2'
2638         _flags_filter=tms470_flags
2639     elif $_cc -v 2>&1 | grep -q clang; then
2640         _type=clang
2641         _ident=$($_cc --version | head -n1)
2642         _depflags='-MMD'
2643         _cflags_speed='-O3'
2644         _cflags_size='-Os'
2645     elif $_cc -V 2>&1 | grep -q Sun; then
2646         _type=suncc
2647         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2648         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2649         _DEPFLAGS='-xM1 -xc99'
2650         _ldflags='-std=c99'
2651         _cflags_speed='-O5'
2652         _cflags_size='-O5 -xspace'
2653         _flags_filter=suncc_flags
2654     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2655         _type=pathscale
2656         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2657         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2658         _cflags_speed='-O2'
2659         _cflags_size='-Os'
2660         _flags_filter='filter_out -Wdisabled-optimization'
2661     elif $_cc -v 2>&1 | grep -q Open64; then
2662         _type=open64
2663         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2664         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2665         _cflags_speed='-O2'
2666         _cflags_size='-Os'
2667         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2668     elif $_cc -V 2>&1 | grep -q Portland; then
2669         _type=pgi
2670         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2671         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2672         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2673         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2674         _cflags_noopt="-O1"
2675         _flags_filter=pgi_flags
2676     elif $_cc 2>&1 | grep -q Microsoft; then
2677         _type=msvc
2678         _ident=$($cc 2>&1 | head -n1)
2679         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2680         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2681         _cflags_speed="-O2"
2682         _cflags_size="-O1"
2683         if $_cc 2>&1 | grep -q Linker; then
2684             _ld_o='-out:$@'
2685         else
2686             _ld_o='-Fe$@'
2687         fi
2688         _cc_o='-Fo$@'
2689         _cc_e='-P -Fi$@'
2690         _flags_filter=msvc_flags
2691         _ld_lib='lib%.a'
2692         _ld_path='-libpath:'
2693         _flags='-nologo'
2694         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2695         if [ $pfx = hostcc ]; then
2696             append _cflags -Dsnprintf=_snprintf
2697         fi
2698     elif $_cc 2>&1 | grep -q Intel; then
2699         _type=icl
2700         _ident=$($cc 2>&1 | head -n1)
2701         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2702         # Not only is O3 broken on 13.x+ but it is slower on all previous
2703         # versions (tested) as well.
2704         _cflags_speed="-O2"
2705         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2706         if $_cc 2>&1 | grep -q Linker; then
2707             _ld_o='-out:$@'
2708         else
2709             _ld_o='-Fe$@'
2710         fi
2711         _cc_o='-Fo$@'
2712         _cc_e='-P'
2713         _flags_filter=icl_flags
2714         _ld_lib='lib%.a'
2715         _ld_path='-libpath:'
2716         # -Qdiag-error to make icl error when seeing certain unknown arguments
2717         _flags='-nologo -Qdiag-error:4044,10157'
2718         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2719         # with MSVC which enables it by default.
2720         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2721         if [ $pfx = hostcc ]; then
2722             append _cflags -Dsnprintf=_snprintf
2723         fi
2724     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2725         _type=cparser
2726         _ident=$($_cc --version | head -n1)
2727         _depflags='-MMD'
2728         _cflags_speed='-O4'
2729         _cflags_size='-O2'
2730         _flags_filter=cparser_flags
2731     fi
2732
2733     eval ${pfx}_type=\$_type
2734     eval ${pfx}_ident=\$_ident
2735 }
2736
2737 set_ccvars(){
2738     eval ${1}_C=\${_cc_c-\${${1}_C}}
2739     eval ${1}_E=\${_cc_e-\${${1}_E}}
2740     eval ${1}_O=\${_cc_o-\${${1}_O}}
2741
2742     if [ -n "$_depflags" ]; then
2743         eval ${1}_DEPFLAGS=\$_depflags
2744     else
2745         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2746         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2747         eval DEP${1}FLAGS=\$_flags
2748     fi
2749 }
2750
2751 probe_cc cc "$cc"
2752 cflags_filter=$_flags_filter
2753 cflags_speed=$_cflags_speed
2754 cflags_size=$_cflags_size
2755 cflags_noopt=$_cflags_noopt
2756 add_cflags $_flags $_cflags
2757 cc_ldflags=$_ldflags
2758 set_ccvars CC
2759
2760 probe_cc hostcc "$host_cc"
2761 host_cflags_filter=$_flags_filter
2762 add_host_cflags  $_flags $_cflags
2763 set_ccvars HOSTCC
2764
2765 test -n "$cc_type" && enable $cc_type ||
2766     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2767
2768 : ${as_default:=$cc}
2769 : ${dep_cc_default:=$cc}
2770 : ${ld_default:=$cc}
2771 : ${host_ld_default:=$host_cc}
2772 set_default ar as dep_cc ld host_ld
2773
2774 probe_cc as "$as"
2775 asflags_filter=$_flags_filter
2776 add_asflags $_flags $_cflags
2777 set_ccvars AS
2778
2779 probe_cc ld "$ld"
2780 ldflags_filter=$_flags_filter
2781 add_ldflags $_flags $_ldflags
2782 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2783 LD_O=${_ld_o-$LD_O}
2784 LD_LIB=${_ld_lib-$LD_LIB}
2785 LD_PATH=${_ld_path-$LD_PATH}
2786
2787 probe_cc hostld "$host_ld"
2788 host_ldflags_filter=$_flags_filter
2789 add_host_ldflags $_flags $_ldflags
2790 HOSTLD_O=${_ld_o-$HOSTLD_O}
2791
2792 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2793     probe_cc depcc "$dep_cc"
2794     CCDEP=${_DEPCMD:-$DEPCMD}
2795     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2796     DEPCCFLAGS=$_flags
2797 fi
2798
2799 if $ar 2>&1 | grep -q Microsoft; then
2800     arflags="-nologo"
2801     ar_o='-out:$@'
2802 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2803     arflags="rq"
2804     ar_o='$@'
2805 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2806     arflags='-Xany -r -c'
2807     ar_o='$@'
2808 else
2809     arflags="rc"
2810     ar_o='$@'
2811 fi
2812
2813 add_cflags $extra_cflags
2814 add_asflags $extra_cflags
2815
2816 if test -n "$sysroot"; then
2817     case "$cc_type" in
2818         gcc|llvm_gcc|clang)
2819             add_cppflags --sysroot="$sysroot"
2820             add_ldflags --sysroot="$sysroot"
2821         ;;
2822         tms470)
2823             add_cppflags -I"$sysinclude"
2824             add_ldflags  --sysroot="$sysroot"
2825         ;;
2826     esac
2827 fi
2828
2829 if test "$cpu" = host; then
2830     enabled cross_compile &&
2831         die "--cpu=host makes no sense when cross-compiling."
2832
2833     case "$cc_type" in
2834         gcc|llvm_gcc)
2835             check_native(){
2836                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2837                 sed -n "/cc1.*$1=/{
2838                             s/.*$1=\\([^ ]*\\).*/\\1/
2839                             p
2840                             q
2841                         }" $TMPE
2842             }
2843             cpu=$(check_native -march || check_native -mcpu)
2844         ;;
2845     esac
2846
2847     test "${cpu:-host}" = host &&
2848         die "--cpu=host not supported with compiler $cc"
2849 fi
2850
2851 # Deal with common $arch aliases
2852 case "$arch" in
2853     aarch64|arm64)
2854         arch="aarch64"
2855     ;;
2856     arm*)
2857         arch="arm"
2858     ;;
2859     mips*|IP*)
2860         arch="mips"
2861     ;;
2862     parisc*|hppa*)
2863         arch="parisc"
2864     ;;
2865     "Power Macintosh"|ppc*|powerpc*)
2866         arch="ppc"
2867     ;;
2868     s390|s390x)
2869         arch="s390"
2870     ;;
2871     sh4|sh)
2872         arch="sh4"
2873     ;;
2874     sun4u|sparc*)
2875         arch="sparc"
2876     ;;
2877     tilegx|tile-gx)
2878         arch="tilegx"
2879     ;;
2880     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2881         arch="x86"
2882     ;;
2883 esac
2884
2885 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2886 enable $arch
2887
2888 # Add processor-specific flags
2889 if enabled aarch64; then
2890
2891     case $cpu in
2892         armv*)
2893             cpuflags="-march=$cpu"
2894         ;;
2895         *)
2896             cpuflags="-mcpu=$cpu"
2897         ;;
2898     esac
2899
2900 elif enabled alpha; then
2901
2902     cpuflags="-mcpu=$cpu"
2903
2904 elif enabled arm; then
2905
2906     check_arm_arch() {
2907         check_cpp_condition stddef.h \
2908             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2909             $cpuflags
2910     }
2911
2912     probe_arm_arch() {
2913         if   check_arm_arch 4;        then echo armv4;
2914         elif check_arm_arch 4T;       then echo armv4t;
2915         elif check_arm_arch 5;        then echo armv5;
2916         elif check_arm_arch 5E;       then echo armv5e;
2917         elif check_arm_arch 5T;       then echo armv5t;
2918         elif check_arm_arch 5TE;      then echo armv5te;
2919         elif check_arm_arch 5TEJ;     then echo armv5te;
2920         elif check_arm_arch 6;        then echo armv6;
2921         elif check_arm_arch 6J;       then echo armv6j;
2922         elif check_arm_arch 6K;       then echo armv6k;
2923         elif check_arm_arch 6Z;       then echo armv6z;
2924         elif check_arm_arch 6ZK;      then echo armv6zk;
2925         elif check_arm_arch 6T2;      then echo armv6t2;
2926         elif check_arm_arch 7;        then echo armv7;
2927         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2928         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2929         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2930         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2931         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2932         fi
2933     }
2934
2935     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2936
2937     case $cpu in
2938         armv*)
2939             cpuflags="-march=$cpu"
2940             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2941         ;;
2942         *)
2943             cpuflags="-mcpu=$cpu"
2944             case $cpu in
2945                 cortex-a*)                               subarch=armv7a  ;;
2946                 cortex-r*)                               subarch=armv7r  ;;
2947                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2948                 arm11*)                                  subarch=armv6   ;;
2949                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2950                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2951                 *)                             subarch=$(probe_arm_arch) ;;
2952             esac
2953         ;;
2954     esac
2955
2956     case "$subarch" in
2957         armv5t*)    enable fast_clz                ;;
2958         armv[6-8]*) enable fast_clz fast_unaligned ;;
2959     esac
2960
2961 elif enabled avr32; then
2962
2963     case $cpu in
2964         ap7[02]0[0-2])
2965             subarch="avr32_ap"
2966             cpuflags="-mpart=$cpu"
2967         ;;
2968         ap)
2969             subarch="avr32_ap"
2970             cpuflags="-march=$cpu"
2971         ;;
2972         uc3[ab]*)
2973             subarch="avr32_uc"
2974             cpuflags="-mcpu=$cpu"
2975         ;;
2976         uc)
2977             subarch="avr32_uc"
2978             cpuflags="-march=$cpu"
2979         ;;
2980     esac
2981
2982 elif enabled bfin; then
2983
2984     cpuflags="-mcpu=$cpu"
2985
2986 elif enabled mips; then
2987
2988     cpuflags="-march=$cpu"
2989
2990 elif enabled ppc; then
2991
2992     case $(tolower $cpu) in
2993         601|ppc601|powerpc601)
2994             cpuflags="-mcpu=601"
2995             disable altivec
2996         ;;
2997         603*|ppc603*|powerpc603*)
2998             cpuflags="-mcpu=603"
2999             disable altivec
3000         ;;
3001         604*|ppc604*|powerpc604*)
3002             cpuflags="-mcpu=604"
3003             disable altivec
3004         ;;
3005         g3|75*|ppc75*|powerpc75*)
3006             cpuflags="-mcpu=750"
3007             disable altivec
3008         ;;
3009         g4|745*|ppc745*|powerpc745*)
3010             cpuflags="-mcpu=7450"
3011         ;;
3012         74*|ppc74*|powerpc74*)
3013             cpuflags="-mcpu=7400"
3014         ;;
3015         g5|970|ppc970|powerpc970)
3016             cpuflags="-mcpu=970"
3017         ;;
3018         power[3-7]*)
3019             cpuflags="-mcpu=$cpu"
3020         ;;
3021         cell)
3022             cpuflags="-mcpu=cell"
3023             enable ldbrx
3024         ;;
3025         e500mc)
3026             cpuflags="-mcpu=e500mc"
3027             disable altivec
3028         ;;
3029         e500v2)
3030             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3031             disable altivec
3032         ;;
3033         e500)
3034             cpuflags="-mcpu=8540 -mhard-float"
3035             disable altivec
3036         ;;
3037     esac
3038
3039 elif enabled sparc; then
3040
3041     case $cpu in
3042         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3043             cpuflags="-mcpu=$cpu"
3044             disable vis
3045         ;;
3046         ultrasparc*|niagara[234])
3047             cpuflags="-mcpu=$cpu"
3048         ;;
3049     esac
3050
3051 elif enabled x86; then
3052
3053     case $cpu in
3054         i[345]86|pentium)
3055             cpuflags="-march=$cpu"
3056             disable mmx
3057         ;;
3058         # targets that do NOT support nopl and conditional mov (cmov)
3059         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3060             cpuflags="-march=$cpu"
3061             disable i686
3062         ;;
3063         # targets that do support nopl and conditional mov (cmov)
3064         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3065             cpuflags="-march=$cpu"
3066             enable i686
3067             enable fast_cmov
3068         ;;
3069         # targets that do support conditional mov but on which it's slow
3070         pentium4|pentium4m|prescott|nocona)
3071             cpuflags="-march=$cpu"
3072             enable i686
3073             disable fast_cmov
3074         ;;
3075     esac
3076
3077 fi
3078
3079 if [ "$cpu" != generic ]; then
3080     add_cflags  $cpuflags
3081     add_asflags $cpuflags
3082 fi
3083
3084 # compiler sanity check
3085 check_exec <<EOF
3086 int main(void){ return 0; }
3087 EOF
3088 if test "$?" != 0; then
3089     echo "$cc is unable to create an executable file."
3090     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3091         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3092         echo "Only do this if you know what cross compiling means."
3093     fi
3094     die "C compiler test failed."
3095 fi
3096
3097 add_cppflags -D_ISOC99_SOURCE
3098 check_cflags -std=c99
3099 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3100 #include <stdlib.h>
3101 EOF
3102 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3103 #include <stdlib.h>
3104 EOF
3105
3106 check_host_cflags -std=c99
3107 check_host_cflags -Wall
3108
3109 check_64bit(){
3110     arch32=$1
3111     arch64=$2
3112     expr=$3
3113     check_code cc "" "int test[2*($expr) - 1]" &&
3114         subarch=$arch64 || subarch=$arch32
3115 }
3116
3117 case "$arch" in
3118     aarch64|alpha|ia64)
3119         spic=$shared
3120     ;;
3121     mips)
3122         check_64bit mips mips64 '_MIPS_SIM > 1'
3123         spic=$shared
3124     ;;
3125     parisc)
3126         check_64bit parisc parisc64 'sizeof(void *) > 4'
3127         spic=$shared
3128     ;;
3129     ppc)
3130         check_64bit ppc ppc64 'sizeof(void *) > 4'
3131         spic=$shared
3132     ;;
3133     sparc)
3134         check_64bit sparc sparc64 'sizeof(void *) > 4'
3135         spic=$shared
3136     ;;
3137     x86)
3138         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3139         if test "$subarch" = "x86_64"; then
3140             spic=$shared
3141         fi
3142     ;;
3143 esac
3144
3145 enable $subarch
3146 enabled spic && enable_weak pic
3147
3148 # OS specific
3149 case $target_os in
3150     aix)
3151         SHFLAGS=-shared
3152         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3153         enabled shared && add_ldflags -Wl,-brtl
3154         ;;
3155     haiku)
3156         prefix_default="/boot/common"
3157         network_extralibs="-lnetwork"
3158         host_libs=
3159         ;;
3160     sunos)
3161         SHFLAGS='-shared -Wl,-h,$$(@F)'
3162         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3163         network_extralibs="-lsocket -lnsl"
3164         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3165         # When using suncc to build, the Solaris linker will mark
3166         # an executable with each instruction set encountered by
3167         # the Solaris assembler.  As our libraries contain their own
3168         # guards for processor-specific code, instead suppress
3169         # generation of the HWCAPS ELF section on Solaris x86 only.
3170         enabled_all suncc x86 &&
3171             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3172             add_ldflags -Wl,-M,mapfile
3173         nm_default='nm -P -g'
3174         ;;
3175     netbsd)
3176         disable symver
3177         oss_indev_extralibs="-lossaudio"
3178         oss_outdev_extralibs="-lossaudio"
3179         ;;
3180     openbsd|bitrig)
3181         disable symver
3182         SHFLAGS='-shared'
3183         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3184         SLIB_INSTALL_LINKS=
3185         oss_indev_extralibs="-lossaudio"
3186         oss_outdev_extralibs="-lossaudio"
3187         ;;
3188     dragonfly)
3189         disable symver
3190         ;;
3191     freebsd)
3192         ;;
3193     bsd/os)
3194         add_extralibs -lpoll -lgnugetopt
3195         ;;
3196     darwin)
3197         gas="gas-preprocessor.pl $cc"
3198         enabled ppc && add_asflags -force_cpusubtype_ALL
3199         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3200         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3201         add_ldflags -Wl,-dynamic,-search_paths_first
3202         SLIBSUF=".dylib"
3203         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3204         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3205         objformat="macho"
3206         enabled x86_64 && objformat="macho64"
3207         enabled_any pic shared ||
3208             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3209         ;;
3210     mingw32*)
3211         if test $target_os = "mingw32ce"; then
3212             disable network
3213         else
3214             target_os=mingw32
3215         fi
3216         LIBTARGET=i386
3217         if enabled x86_64; then
3218             LIBTARGET="i386:x86-64"
3219         elif enabled arm; then
3220             LIBTARGET=arm-wince
3221         fi
3222         check_ldflags -Wl,--nxcompat
3223         check_ldflags -Wl,--dynamicbase
3224         shlibdir_default="$bindir_default"
3225         SLIBPREF=""
3226         SLIBSUF=".dll"
3227         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3228         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3229         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3230         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3231         SLIB_INSTALL_LINKS=
3232         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3233         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3234         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3235         objformat="win32"
3236         dlltool="${cross_prefix}dlltool"
3237         ranlib=:
3238         enable dos_paths
3239         ;;
3240     win32|win64)
3241         disable symver
3242         if enabled shared; then
3243             # Link to the import library instead of the normal static library
3244             # for shared libs.
3245             LD_LIB='%.lib'
3246             # Cannot build both shared and static libs with MSVC or icl.
3247             disable static
3248         fi
3249         shlibdir_default="$bindir_default"
3250         SLIBPREF=""
3251         SLIBSUF=".dll"
3252         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3253         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3254         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3255         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3256         SLIB_INSTALL_LINKS=
3257         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3258         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3259         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3260         objformat="win32"
3261         ranlib=:
3262         enable dos_paths
3263         ;;
3264     cygwin*)
3265         target_os=cygwin
3266         shlibdir_default="$bindir_default"
3267         SLIBPREF="cyg"
3268         SLIBSUF=".dll"
3269         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3270         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3271         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3272         SLIB_INSTALL_LINKS=
3273         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3274         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3275         objformat="win32"
3276         enable dos_paths
3277         ;;
3278     *-dos|freedos|opendos)
3279         network_extralibs="-lsocket"
3280         objformat="coff"
3281         enable dos_paths
3282         add_cppflags -U__STRICT_ANSI__
3283         ;;
3284     linux)
3285         enable dv1394
3286         ;;
3287     irix*)
3288         target_os=irix
3289         ranlib="echo ignoring ranlib"
3290         ;;
3291     os/2*)
3292         ln_s="cp -f"
3293         objformat="aout"
3294         add_cppflags -D_GNU_SOURCE
3295         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3296         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3297         LIBSUF="_s.a"
3298         SLIBPREF=""
3299         SLIBSUF=".dll"
3300         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3301         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3302         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3303             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3304             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3305             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3306             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3307             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3308         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3309             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3310         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3311         enable dos_paths
3312         ;;
3313     gnu/kfreebsd)
3314         add_cppflags -D_BSD_SOURCE
3315         ;;
3316     gnu)
3317         ;;
3318     qnx)
3319         add_cppflags -D_QNX_SOURCE
3320         network_extralibs="-lsocket"
3321         ;;
3322     symbian)
3323         SLIBSUF=".dll"
3324         enable dos_paths
3325         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3326         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3327         add_ldflags -Wl,--target1-abs,--no-undefined \
3328                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3329                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3330         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3331                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3332                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3333         ;;
3334     osf1)
3335         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3336         ;;
3337     minix)
3338         ;;
3339     plan9)
3340         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3341                      -D_REENTRANT_SOURCE        \
3342                      -D_RESEARCH_SOURCE         \
3343                      -DFD_SETSIZE=96            \
3344                      -DHAVE_SOCK_OPTS
3345         add_compat strtod.o strtod=avpriv_strtod
3346         network_extralibs='-lbsd'
3347         exeobjs=compat/plan9/main.o
3348         disable avserver
3349         cp_f='cp'
3350         ;;
3351     none)
3352         ;;
3353     *)
3354         die "Unknown OS '$target_os'."
3355         ;;
3356 esac
3357
3358 # determine libc flavour
3359
3360 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3361 if check_cpp_condition features.h "defined __UCLIBC__"; then
3362     libc_type=uclibc
3363     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3364 elif check_cpp_condition features.h "defined __GLIBC__"; then
3365     libc_type=glibc
3366     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3367 # MinGW headers can be installed on Cygwin, so check for newlib first.
3368 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3369     libc_type=newlib
3370     add_cppflags -U__STRICT_ANSI__
3371 elif check_header _mingw.h; then
3372     libc_type=mingw
3373     check_cpp_condition _mingw.h \
3374         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3375             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3376         die "ERROR: MinGW runtime version must be >= 3.15."
3377     add_cppflags -U__STRICT_ANSI__
3378 elif check_func_headers stdlib.h _get_doserrno; then
3379     libc_type=msvcrt
3380     add_compat strtod.o strtod=avpriv_strtod
3381     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3382                                  _snprintf=avpriv_snprintf  \
3383                                  vsnprintf=avpriv_vsnprintf
3384     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3385     # 0x601 by default unless something else is set by the user.
3386     # This can easily lead to us detecting functions only present
3387     # in such new versions and producing binaries requiring windows 7.0.
3388     # Therefore explicitly set the default to XP unless the user has
3389     # set something else on the command line.
3390     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3391 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3392     libc_type=klibc
3393 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3394     libc_type=bionic
3395     add_compat strtod.o strtod=avpriv_strtod
3396 fi
3397
3398 test -n "$libc_type" && enable $libc_type
3399
3400 # hacks for compiler/libc/os combinations
3401
3402 if enabled_all tms470 glibc; then
3403     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3404     add_cppflags -D__USER_LABEL_PREFIX__=
3405     add_cppflags -D__builtin_memset=memset
3406     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3407     add_cflags   -pds=48    # incompatible redefinition of macro
3408 fi
3409
3410 if enabled_all ccc glibc; then
3411     add_ldflags -Wl,-z,now  # calls to libots crash without this
3412 fi
3413
3414 esc(){
3415     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3416 }
3417
3418 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3419
3420 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3421
3422 set_default $PATHS_LIST
3423 set_default nm
3424
3425 # we need to build at least one lib type
3426 if ! enabled_any static shared; then
3427     cat <<EOF
3428 At least one library type must be built.
3429 Specify --enable-static to build the static libraries or --enable-shared to
3430 build the shared libraries as well. To only build the shared libraries specify
3431 --disable-static in addition to --enable-shared.
3432 EOF
3433     exit 1;
3434 fi
3435
3436 die_license_disabled() {
3437     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3438 }
3439
3440 die_license_disabled gpl libcdio
3441 die_license_disabled gpl libx264
3442 die_license_disabled gpl libxavs
3443 die_license_disabled gpl libxvid
3444 die_license_disabled gpl x11grab
3445
3446 die_license_disabled nonfree libfaac
3447 die_license_disabled nonfree libfdk_aac
3448 die_license_disabled nonfree openssl
3449
3450 die_license_disabled version3 libopencore_amrnb
3451 die_license_disabled version3 libopencore_amrwb
3452 die_license_disabled version3 libvo_aacenc
3453 die_license_disabled version3 libvo_amrwbenc
3454
3455 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3456
3457 disabled optimizations || check_cflags -fomit-frame-pointer
3458
3459 enable_weak_pic() {
3460     disabled pic && return
3461     enable pic
3462     add_cppflags -DPIC
3463     case "$target_os" in
3464     mingw*|cygwin*)
3465         ;;
3466     *)
3467         add_cflags -fPIC
3468         ;;
3469     esac
3470     add_asflags  -fPIC
3471 }
3472
3473 enabled pic && enable_weak_pic
3474
3475 check_cc <<EOF || die "Symbol mangling check failed."
3476 int ff_extern;
3477 EOF
3478 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3479 extern_prefix=${sym%%ff_extern*}
3480
3481 check_cc <<EOF && enable_weak inline_asm
3482 void foo(void) { __asm__ volatile ("" ::); }
3483 EOF
3484
3485 _restrict=
3486 for restrict_keyword in restrict __restrict__ __restrict; do
3487     check_cc <<EOF && _restrict=$restrict_keyword && break
3488 void foo(char * $restrict_keyword p);
3489 EOF
3490 done
3491
3492 check_cc <<EOF && enable pragma_deprecated
3493 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3494 EOF
3495
3496 check_cc <<EOF && enable attribute_packed
3497 struct { int x; } __attribute__((packed)) x;
3498 EOF
3499
3500 check_cc <<EOF && enable attribute_may_alias
3501 union { int x; } __attribute__((may_alias)) x;
3502 EOF
3503
3504 check_cc <<EOF || die "endian test failed"
3505 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3506 EOF
3507 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3508
3509 check_inline_asm inline_asm_labels '"1:\n"'
3510
3511 if enabled alpha; then
3512
3513     check_cflags -mieee
3514
3515 elif enabled arm; then
3516
3517     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3518     enabled thumb && check_cflags -mthumb || check_cflags -marm
3519     nogas=die
3520
3521     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3522         enable vfp_args
3523     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3524         case "${cross_prefix:-$cc}" in
3525             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3526             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3527 __asm__ (".eabi_attribute 28, 1");
3528 int main(void) { return 0; }
3529 EOF
3530         esac
3531         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3532     fi
3533
3534     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3535     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3536     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3537     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3538     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3539     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3540
3541     [ $target_os = linux ] ||
3542         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3543             $ARCH_EXT_LIST_ARM
3544
3545     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3546     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3547
3548     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3549
3550 elif enabled mips; then
3551
3552     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3553
3554 elif enabled parisc; then
3555
3556     if enabled gcc; then
3557         case $($cc -dumpversion) in
3558             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3559         esac
3560     fi
3561
3562 elif enabled ppc; then
3563
3564     enable local_aligned_8 local_aligned_16
3565
3566     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3567     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3568     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3569     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3570
3571     # AltiVec flags: The FSF version of GCC differs from the Apple version
3572     if enabled altivec; then
3573         nogas=warn
3574         check_cflags -maltivec -mabi=altivec &&
3575         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3576         check_cflags -faltivec
3577
3578         # check if our compiler supports Motorola AltiVec C API
3579         check_cc <<EOF || disable altivec
3580 $inc_altivec_h
3581 int main(void) {
3582     vector signed int v1 = (vector signed int) { 0 };
3583     vector signed int v2 = (vector signed int) { 1 };
3584     v1 = vec_add(v1, v2);
3585     return 0;
3586 }
3587 EOF
3588
3589         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3590     fi
3591
3592 elif enabled sparc; then
3593
3594     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3595
3596 elif enabled x86; then
3597
3598     check_builtin rdtsc    intrin.h   "__rdtsc()"
3599     check_builtin mm_empty mmintrin.h "_mm_empty()"
3600
3601     enable local_aligned_8 local_aligned_16
3602
3603     # check whether EBP is available on x86
3604     # As 'i' is stored on the stack, this program will crash
3605     # if the base pointer is used to access it because the
3606     # base pointer is cleared in the inline assembly code.
3607     check_exec_crash <<EOF && enable ebp_available
3608 volatile int i=0;
3609 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3610 return i;
3611 EOF
3612
3613     # check whether EBX is available on x86
3614     check_inline_asm ebx_available '""::"b"(0)' &&
3615         check_inline_asm ebx_available '"":::"%ebx"'
3616
3617     # check whether xmm clobbers are supported
3618     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3619
3620     # check whether binutils is new enough to compile SSSE3/MMXEXT
3621     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3622     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3623
3624     if ! disabled_any asm mmx yasm; then
3625         if check_cmd $yasmexe --version; then
3626             enabled x86_64 && yasm_extra="-m amd64"
3627             yasm_debug="-g dwarf2"
3628         elif check_cmd nasm -v; then
3629             yasmexe=nasm
3630             yasm_debug="-g -F dwarf"
3631             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3632         fi
3633
3634         YASMFLAGS="-f $objformat $yasm_extra"
3635         enabled pic               && append YASMFLAGS "-DPIC"
3636         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3637         case "$objformat" in
3638             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3639         esac
3640
3641         check_yasm "movbe ecx, [5]" && enable yasm ||
3642             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3643         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3644         check_yasm "CPU amdnop" && enable cpunop
3645     fi
3646
3647     case "$cpu" in
3648         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3649             disable fast_clz
3650         ;;
3651     esac
3652
3653 fi
3654
3655 if enabled asm; then
3656     as=${gas:=$as}
3657     check_as <<EOF && enable gnu_as || \
3658         $nogas "GNU assembler not found, install gas-preprocessor"
3659 .macro m n
3660 \n: .int 0
3661 .endm
3662 m x
3663 EOF
3664 fi
3665
3666 check_ldflags -Wl,--as-needed
3667
3668 if check_func dlopen; then
3669     ldl=
3670 elif check_func dlopen -ldl; then
3671     ldl=-ldl
3672 fi
3673
3674 if ! disabled network; then
3675     check_type "sys/types.h sys/socket.h" socklen_t
3676     check_type netdb.h "struct addrinfo"
3677     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3678     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3679     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3680     check_type netinet/in.h "struct sockaddr_in6"
3681     check_type poll.h "struct pollfd"
3682     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3683     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3684     check_type netinet/sctp.h "struct sctp_event_subscribe"
3685     check_func getaddrinfo $network_extralibs
3686     check_func getservbyport $network_extralibs
3687     # Prefer arpa/inet.h over winsock2
3688     if check_header arpa/inet.h ; then
3689         check_func closesocket
3690     elif check_header winsock2.h ; then
3691         check_func_headers winsock2.h closesocket -lws2 &&
3692             network_extralibs="-lws2" ||
3693         { check_func_headers winsock2.h closesocket -lws2_32 &&
3694             network_extralibs="-lws2_32"; }
3695         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3696         check_type ws2tcpip.h socklen_t
3697         check_type ws2tcpip.h "struct addrinfo"
3698         check_type ws2tcpip.h "struct group_source_req"
3699         check_type ws2tcpip.h "struct ip_mreq_source"
3700         check_type ws2tcpip.h "struct ipv6_mreq"
3701         check_type winsock2.h "struct pollfd"
3702         check_type ws2tcpip.h "struct sockaddr_in6"
3703         check_type ws2tcpip.h "struct sockaddr_storage"
3704         check_struct winsock2.h "struct sockaddr" sa_len
3705     else
3706         disable network
3707     fi
3708 fi
3709
3710 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3711 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3712
3713 check_func  fcntl
3714 check_func  fork
3715 check_func_headers stdlib.h getenv
3716 check_func  gethrtime
3717 check_func  getopt
3718 check_func  getrusage
3719 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3720 check_func  gettimeofday
3721 check_func  inet_aton $network_extralibs
3722 check_func  isatty
3723 check_func  localtime_r
3724 check_func  ${malloc_prefix}memalign            && enable memalign
3725 check_func  mkstemp
3726 check_func  mmap
3727 check_func  mprotect
3728 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3729 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3730 check_func  setrlimit
3731 check_func  strerror_r
3732 check_func  strptime
3733 check_func  strtok_r
3734 check_func  sched_getaffinity
3735 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3736 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3737 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3738 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3739 check_func  sysconf
3740 check_func  sysctl
3741 check_func  usleep
3742 check_func_headers io.h setmode
3743 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3744 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3745 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3746 check_func_headers windows.h GetProcessAffinityMask
3747 check_func_headers windows.h GetProcessTimes
3748 check_func_headers windows.h GetSystemTimeAsFileTime
3749 check_func_headers windows.h MapViewOfFile
3750 check_func_headers windows.h SetConsoleTextAttribute
3751 check_func_headers windows.h Sleep
3752 check_func_headers windows.h VirtualAlloc
3753
3754 check_header direct.h
3755 check_header dlfcn.h
3756 check_header dxva.h
3757 check_header dxva2api.h
3758 check_header io.h
3759 check_header malloc.h
3760 check_header poll.h
3761 check_header sys/mman.h
3762 check_header sys/param.h
3763 check_header sys/resource.h
3764 check_header sys/select.h
3765 check_header sys/time.h
3766 check_header sys/un.h
3767 check_header unistd.h
3768 check_header vdpau/vdpau.h
3769 check_header vdpau/vdpau_x11.h
3770 check_header VideoDecodeAcceleration/VDADecoder.h
3771 check_header windows.h
3772 check_header X11/extensions/XvMClib.h
3773
3774 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3775 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3776
3777 if ! disabled w32threads && ! enabled pthreads; then
3778     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3779 fi
3780
3781 # check for some common methods of building with pthread support
3782 # do this before the optional library checks as some of them require pthreads
3783 if ! disabled pthreads && ! enabled w32threads; then
3784     enable pthreads
3785     if check_func pthread_create; then
3786         :
3787     elif check_func pthread_create -pthread; then
3788         add_cflags -pthread
3789         add_extralibs -pthread
3790     elif check_func pthread_create -pthreads; then
3791         add_cflags -pthreads
3792         add_extralibs -pthreads
3793     elif check_func pthread_create -lpthreadGC2; then
3794         add_extralibs -lpthreadGC2
3795     elif ! check_lib pthread.h pthread_create -lpthread; then
3796         disable pthreads
3797     fi
3798 fi
3799
3800 for thread in $THREADS_LIST; do
3801     if enabled $thread; then
3802         test -n "$thread_type" &&
3803             die "ERROR: Only one thread type must be selected." ||
3804             thread_type="$thread"
3805     fi
3806 done
3807
3808 enabled sync_val_compare_and_swap && enable atomics_gcc
3809 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
3810 enabled MemoryBarrier && enable atomics_win32
3811
3812 check_lib math.h sin -lm && LIBM="-lm"
3813 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3814
3815 atan2f_args=2
3816 ldexpf_args=2
3817 powf_args=2
3818
3819 for func in $MATH_FUNCS; do
3820     eval check_mathfunc $func \${${func}_args:-1}
3821 done
3822
3823 # these are off by default, so fail if requested and not available
3824 enabled avisynth          && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3825 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3826 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3827 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3828 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3829 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3830 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3831                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3832                                done || die "ERROR: libgsm not found"; }
3833 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3834 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3835 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3836 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3837 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3838 enabled libopenjpeg       && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3839 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3840 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3841 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3842 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3843 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3844 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3845 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3846 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3847 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3848 enabled libvpx            && {
3849     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3850                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3851     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3852                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3853     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3854     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3855 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3856 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3857                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3858                                die "ERROR: libx264 version must be >= 0.118."; }
3859 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3860 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3861 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3862                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3863                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3864                                die "ERROR: openssl not found"; }
3865
3866 if enabled gnutls; then
3867     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3868     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3869 fi
3870
3871 # libdc1394 check
3872 if enabled libdc1394; then
3873     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3874         enable libdc1394_2; } ||
3875     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3876         enable libdc1394_1; } ||
3877     die "ERROR: No version of libdc1394 found "
3878 fi
3879
3880 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3881     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3882     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3883     enable sdl
3884 fi
3885
3886 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
3887 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3888
3889 check_header linux/fb.h
3890 check_header linux/videodev2.h
3891 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3892
3893 check_header sys/videoio.h
3894
3895 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3896 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3897 # w32api 3.12 had it defined wrong
3898 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3899
3900 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3901 { check_header dev/bktr/ioctl_meteor.h &&
3902   check_header dev/bktr/ioctl_bt848.h; } ||
3903 { check_header machine/ioctl_meteor.h &&
3904   check_header machine/ioctl_bt848.h; } ||
3905 { check_header dev/video/meteor/ioctl_meteor.h &&
3906   check_header dev/video/bktr/ioctl_bt848.h; } ||
3907 check_header dev/ic/bt8xx.h
3908
3909 check_header sndio.h
3910 check_header sys/soundcard.h
3911 check_header soundcard.h
3912
3913 enabled_any alsa_indev alsa_outdev &&
3914     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3915
3916 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
3917     check_func jack_port_get_latency_range -ljack
3918
3919 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3920
3921 if enabled libcdio; then
3922     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
3923     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3924 fi
3925
3926 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
3927
3928 enabled x11grab                                           &&
3929 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3930 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
3931 { enabled xlib || die "ERROR: Xlib not found"; }
3932
3933 enabled vdpau &&
3934     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3935     disable vdpau
3936
3937 enabled vdpau && enabled xlib &&
3938     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
3939     enable vdpau_x11
3940
3941 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3942
3943 # add some useful compiler flags if supported
3944 check_cflags -Wdeclaration-after-statement
3945 check_cflags -Wall
3946 check_cflags -Wdisabled-optimization
3947 check_cflags -Wpointer-arith
3948 check_cflags -Wredundant-decls
3949 check_cflags -Wcast-qual
3950 check_cflags -Wwrite-strings
3951 check_cflags -Wtype-limits
3952 check_cflags -Wundef
3953 check_cflags -Wmissing-prototypes
3954 check_cflags -Wstrict-prototypes
3955 enabled extra_warnings && check_cflags -Winline
3956
3957 check_disable_warning(){
3958     warning_flag=-W${1#-Wno-}
3959     test_cflags $warning_flag && add_cflags $1
3960 }
3961
3962 check_disable_warning -Wno-parentheses
3963 check_disable_warning -Wno-switch
3964 check_disable_warning -Wno-format-zero-length
3965 check_disable_warning -Wno-pointer-sign
3966
3967 # add some linker flags
3968 check_ldflags -Wl,--warn-common
3969 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3970 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3971
3972 enabled xmm_clobber_test &&
3973     check_ldflags -Wl,--wrap,avcodec_open2              \
3974                   -Wl,--wrap,avcodec_decode_audio4      \
3975                   -Wl,--wrap,avcodec_decode_video2      \
3976                   -Wl,--wrap,avcodec_decode_subtitle2   \
3977                   -Wl,--wrap,avcodec_encode_audio2      \
3978                   -Wl,--wrap,avcodec_encode_video2      \
3979                   -Wl,--wrap,avcodec_encode_subtitle    \
3980                   -Wl,--wrap,sws_scale ||
3981     disable xmm_clobber_test
3982
3983 echo "X{};" > $TMPV
3984 if test_ldflags -Wl,--version-script,$TMPV; then
3985     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3986     check_cc <<EOF && enable symver_asm_label
3987 void ff_foo(void) __asm__ ("av_foo@VERSION");
3988 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3989 EOF
3990     check_cc <<EOF && enable symver_gnu_asm
3991 __asm__(".symver ff_foo,av_foo@VERSION");
3992 void ff_foo(void) {}
3993 EOF
3994 fi
3995
3996 if [ -z "$optflags" ]; then
3997     if enabled small; then
3998         optflags=$cflags_size
3999     elif enabled optimizations; then
4000         optflags=$cflags_speed
4001     else
4002         optflags=$cflags_noopt
4003     fi
4004 fi
4005
4006 check_optflags(){
4007     check_cflags "$@"
4008     enabled lto && check_ldflags "$@"
4009 }
4010
4011
4012 if enabled lto; then
4013     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4014     check_cflags  -flto
4015     check_ldflags -flto $cpuflags
4016 fi
4017
4018 check_optflags $optflags
4019 check_optflags -fno-math-errno
4020 check_optflags -fno-signed-zeros
4021
4022 if enabled icc; then
4023     # Just warnings, no remarks
4024     check_cflags -w1
4025     # -wd: Disable following warnings
4026     # 144, 167, 556: -Wno-pointer-sign
4027  &n