configure: Split test_cflags function off from check_cflags
[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 EXTERNAL_LIBRARY_LIST="
1045     avisynth
1046     bzlib
1047     frei0r
1048     gnutls
1049     libcdio
1050     libdc1394
1051     libfaac
1052     libfdk_aac
1053     libfreetype
1054     libgsm
1055     libilbc
1056     libmp3lame
1057     libopencore_amrnb
1058     libopencore_amrwb
1059     libopencv
1060     libopenjpeg
1061     libopus
1062     libpulse
1063     librtmp
1064     libschroedinger
1065     libspeex
1066     libtheora
1067     libvo_aacenc
1068     libvo_amrwbenc
1069     libvorbis
1070     libvpx
1071     libwavpack
1072     libx264
1073     libxavs
1074     libxvid
1075     openssl
1076     x11grab
1077     zlib
1078 "
1079
1080 HWACCEL_LIST="
1081     dxva2
1082     vaapi
1083     vda
1084     vdpau
1085 "
1086 LIBRARY_LIST="
1087     avcodec
1088     avdevice
1089     avfilter
1090     avformat
1091     avresample
1092     avutil
1093     swscale
1094 "
1095
1096 PROGRAM_LIST="
1097     avconv
1098     avplay
1099     avprobe
1100     avserver
1101 "
1102
1103 CONFIG_LIST="
1104     $COMPONENT_LIST
1105     $EXTERNAL_LIBRARY_LIST
1106     $HWACCEL_LIST
1107     $LIBRARY_LIST
1108     $PROGRAM_LIST
1109     dct
1110     doc
1111     error_resilience
1112     fft
1113     gpl
1114     gray
1115     hardcoded_tables
1116     lsp
1117     lzo
1118     mdct
1119     memalign_hack
1120     network
1121     nonfree
1122     pic
1123     rdft
1124     runtime_cpudetect
1125     safe_bitstream_reader
1126     shared
1127     small
1128     sram
1129     static
1130     swscale_alpha
1131     thumb
1132     version3
1133     xmm_clobber_test
1134 "
1135
1136 THREADS_LIST='
1137     pthreads
1138     w32threads
1139 '
1140
1141 ATOMICS_LIST='
1142     atomics_gcc
1143     atomics_suncc
1144     atomics_win32
1145 '
1146
1147 ARCH_LIST='
1148     aarch64
1149     alpha
1150     arm
1151     avr32
1152     avr32_ap
1153     avr32_uc
1154     bfin
1155     ia64
1156     m68k
1157     mips
1158     mips64
1159     parisc
1160     ppc
1161     ppc64
1162     s390
1163     sh4
1164     sparc
1165     sparc64
1166     tilegx
1167     tilepro
1168     tomi
1169     x86
1170     x86_32
1171     x86_64
1172 '
1173
1174 ARCH_EXT_LIST_ARM='
1175     armv5te
1176     armv6
1177     armv6t2
1178     neon
1179     vfp
1180     vfpv3
1181 '
1182
1183 ARCH_EXT_LIST_X86='
1184     amd3dnow
1185     amd3dnowext
1186     avx
1187     avx2
1188     fma4
1189     i686
1190     mmx
1191     mmxext
1192     sse
1193     sse2
1194     sse3
1195     sse4
1196     sse42
1197     ssse3
1198 '
1199
1200 ARCH_EXT_LIST="
1201     $ARCH_EXT_LIST_ARM
1202     $ARCH_EXT_LIST_X86
1203     altivec
1204     ppc4xx
1205     vis
1206 "
1207
1208 HAVE_LIST_CMDLINE='
1209     inline_asm
1210     symver
1211     yasm
1212 '
1213
1214 HAVE_LIST_PUB='
1215     bigendian
1216     fast_unaligned
1217 '
1218
1219 MATH_FUNCS="
1220     atanf
1221     atan2f
1222     cbrtf
1223     cosf
1224     exp2
1225     exp2f
1226     expf
1227     isinf
1228     isnan
1229     ldexpf
1230     llrint
1231     llrintf
1232     log2
1233     log2f
1234     log10f
1235     lrint
1236     lrintf
1237     powf
1238     rint
1239     round
1240     roundf
1241     sinf
1242     trunc
1243     truncf
1244 "
1245
1246 HAVE_LIST="
1247     $ARCH_EXT_LIST
1248     $(add_suffix _external $ARCH_EXT_LIST)
1249     $(add_suffix _inline   $ARCH_EXT_LIST)
1250     $HAVE_LIST_CMDLINE
1251     $HAVE_LIST_PUB
1252     $THREADS_LIST
1253     $ATOMICS_LIST
1254     $MATH_FUNCS
1255     aligned_malloc
1256     aligned_stack
1257     alsa_asoundlib_h
1258     altivec_h
1259     arpa_inet_h
1260     asm_mod_q
1261     asm_mod_y
1262     atomic_cas_ptr
1263     atomics_native
1264     attribute_may_alias
1265     attribute_packed
1266     cdio_paranoia_h
1267     cdio_paranoia_paranoia_h
1268     closesocket
1269     CommandLineToArgvW
1270     cpunop
1271     CryptGenRandom
1272     dcbzl
1273     dev_bktr_ioctl_bt848_h
1274     dev_bktr_ioctl_meteor_h
1275     dev_ic_bt8xx_h
1276     dev_video_bktr_ioctl_bt848_h
1277     dev_video_meteor_ioctl_meteor_h
1278     direct_h
1279     dlfcn_h
1280     dlopen
1281     dos_paths
1282     dxva_h
1283     ebp_available
1284     ebx_available
1285     fast_64bit
1286     fast_clz
1287     fast_cmov
1288     fcntl
1289     fork
1290     getaddrinfo
1291     gethrtime
1292     getopt
1293     GetProcessAffinityMask
1294     GetProcessMemoryInfo
1295     GetProcessTimes
1296     GetSystemTimeAsFileTime
1297     getrusage
1298     getservbyport
1299     gettimeofday
1300     gnu_as
1301     gsm_h
1302     ibm_asm
1303     inet_aton
1304     io_h
1305     inline_asm_labels
1306     isatty
1307     jack_port_get_latency_range
1308     ldbrx
1309     libdc1394_1
1310     libdc1394_2
1311     local_aligned_16
1312     local_aligned_8
1313     localtime_r
1314     loongson
1315     machine_ioctl_bt848_h
1316     machine_ioctl_meteor_h
1317     machine_rw_barrier
1318     malloc_h
1319     MapViewOfFile
1320     memalign
1321     MemoryBarrier
1322     mkstemp
1323     mm_empty
1324     mmap
1325     mprotect
1326     msvcrt
1327     nanosleep
1328     poll_h
1329     posix_memalign
1330     pragma_deprecated
1331     rdtsc
1332     sched_getaffinity
1333     sdl
1334     SetConsoleTextAttribute
1335     setmode
1336     setrlimit
1337     Sleep
1338     sndio_h
1339     socklen_t
1340     soundcard_h
1341     strerror_r
1342     strptime
1343     strtok_r
1344     struct_addrinfo
1345     struct_group_source_req
1346     struct_ip_mreq_source
1347     struct_ipv6_mreq
1348     struct_pollfd
1349     struct_rusage_ru_maxrss
1350     struct_sockaddr_in6
1351     struct_sockaddr_sa_len
1352     struct_sockaddr_storage
1353     struct_v4l2_frmivalenum_discrete
1354     symver_asm_label
1355     symver_gnu_asm
1356     sync_val_compare_and_swap
1357     sysconf
1358     sysctl
1359     sys_mman_h
1360     sys_param_h
1361     sys_resource_h
1362     sys_select_h
1363     sys_soundcard_h
1364     sys_time_h
1365     sys_un_h
1366     sys_videoio_h
1367     threads
1368     unistd_h
1369     usleep
1370     vfp_args
1371     VirtualAlloc
1372     windows_h
1373     winsock2_h
1374     xform_asm
1375     xmm_clobbers
1376 "
1377
1378 # options emitted with CONFIG_ prefix but not available on the command line
1379 CONFIG_EXTRA="
1380     aandcttables
1381     ac3dsp
1382     audio_frame_queue
1383     dsputil
1384     gcrypt
1385     golomb
1386     gplv3
1387     h264chroma
1388     h264dsp
1389     h264pred
1390     h264qpel
1391     hpeldsp
1392     huffman
1393     lgplv3
1394     lpc
1395     mpegaudio
1396     mpegaudiodsp
1397     mpegvideo
1398     mpegvideoenc
1399     nettle
1400     rangecoder
1401     riffdec
1402     riffenc
1403     rtpdec
1404     rtpenc_chain
1405     sinewin
1406     videodsp
1407     vp3dsp
1408 "
1409
1410 CMDLINE_SELECT="
1411     $ARCH_EXT_LIST
1412     $CONFIG_LIST
1413     $HAVE_LIST_CMDLINE
1414     $THREADS_LIST
1415     asm
1416     cross_compile
1417     debug
1418     extra_warnings
1419     logging
1420     lto
1421     optimizations
1422 "
1423
1424 PATHS_LIST='
1425     bindir
1426     datadir
1427     docdir
1428     incdir
1429     libdir
1430     mandir
1431     prefix
1432     shlibdir
1433 '
1434
1435 CMDLINE_SET="
1436     $PATHS_LIST
1437     ar
1438     arch
1439     as
1440     build_suffix
1441     cc
1442     cpu
1443     cross_prefix
1444     dep_cc
1445     extra_version
1446     host_cc
1447     host_cflags
1448     host_ld
1449     host_ldflags
1450     host_libs
1451     host_os
1452     ld
1453     logfile
1454     malloc_prefix
1455     nm
1456     optflags
1457     pkg_config
1458     random_seed
1459     samples
1460     sysinclude
1461     sysroot
1462     target_exec
1463     target_os
1464     target_path
1465     target_samples
1466     toolchain
1467 "
1468
1469 CMDLINE_APPEND="
1470     extra_cflags
1471     host_cppflags
1472 "
1473
1474 # code dependency declarations
1475
1476 # architecture extensions
1477
1478 armv5te_deps="arm"
1479 armv6_deps="arm"
1480 armv6t2_deps="arm"
1481 neon_deps="arm"
1482 vfp_deps="arm"
1483 vfpv3_deps="vfp"
1484
1485 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1486
1487 altivec_deps="ppc"
1488 ppc4xx_deps="ppc"
1489
1490 vis_deps="sparc"
1491
1492 cpunop_deps="i686"
1493 x86_64_select="i686"
1494 x86_64_suggest="fast_cmov"
1495
1496 amd3dnow_deps="mmx"
1497 amd3dnowext_deps="amd3dnow"
1498 mmx_deps="x86"
1499 mmxext_deps="mmx"
1500 sse_deps="mmxext"
1501 sse2_deps="sse"
1502 sse3_deps="sse2"
1503 ssse3_deps="sse3"
1504 sse4_deps="ssse3"
1505 sse42_deps="sse4"
1506 avx_deps="sse42"
1507 fma4_deps="avx"
1508 avx2_deps="avx"
1509
1510 mmx_external_deps="yasm"
1511 mmx_inline_deps="inline_asm"
1512 mmx_suggest="mmx_external mmx_inline"
1513
1514 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1515     eval dep=\$${ext}_deps
1516     eval ${ext}_external_deps='"${dep}_external"'
1517     eval ${ext}_inline_deps='"${dep}_inline"'
1518     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1519 done
1520
1521 aligned_stack_if_any="ppc x86"
1522 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1523 fast_clz_if_any="alpha avr32 mips ppc x86"
1524 fast_unaligned_if_any="ppc x86"
1525
1526 inline_asm_deps="!tms470"
1527 need_memalign="altivec neon sse"
1528
1529 symver_if_any="symver_asm_label symver_gnu_asm"
1530
1531 log2_deps="!msvcrt"
1532
1533 # subsystems
1534 dct_select="rdft"
1535 error_resilience_select="dsputil"
1536 lpc_select="dsputil"
1537 mdct_select="fft"
1538 rdft_select="fft"
1539 mpegaudio_select="mpegaudiodsp"
1540 mpegaudiodsp_select="dct"
1541 mpegvideo_select="dsputil hpeldsp videodsp"
1542 mpegvideoenc_select="mpegvideo"
1543
1544 # decoders / encoders
1545 aac_decoder_select="mdct sinewin"
1546 aac_encoder_select="audio_frame_queue mdct sinewin"
1547 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1548 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1549 ac3_encoder_select="mdct ac3dsp dsputil"
1550 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1551 aic_decoder_select="dsputil golomb"
1552 alac_encoder_select="lpc"
1553 als_decoder_select="dsputil"
1554 amrnb_decoder_select="lsp"
1555 amrwb_decoder_select="lsp"
1556 amv_decoder_select="dsputil hpeldsp"
1557 ape_decoder_select="dsputil"
1558 asv1_decoder_select="dsputil"
1559 asv1_encoder_select="dsputil"
1560 asv2_decoder_select="dsputil"
1561 asv2_encoder_select="dsputil"
1562 atrac1_decoder_select="mdct sinewin"
1563 atrac3_decoder_select="mdct"
1564 bink_decoder_select="dsputil hpeldsp"
1565 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1566 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1567 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1568 cllc_decoder_select="dsputil"
1569 comfortnoise_encoder_select="lpc"
1570 cook_decoder_select="dsputil mdct sinewin"
1571 cscd_decoder_select="lzo"
1572 cscd_decoder_suggest="zlib"
1573 dca_decoder_select="mdct"
1574 dnxhd_decoder_select="dsputil"
1575 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1576 dvvideo_decoder_select="dsputil"
1577 dvvideo_encoder_select="dsputil"
1578 dxa_decoder_deps="zlib"
1579 eac3_decoder_select="ac3_decoder"
1580 eac3_encoder_select="ac3_encoder"
1581 eamad_decoder_select="aandcttables dsputil mpegvideo"
1582 eatgq_decoder_select="aandcttables dsputil"
1583 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1584 ffv1_decoder_select="dsputil golomb rangecoder"
1585 ffv1_encoder_select="dsputil rangecoder"
1586 ffvhuff_decoder_select="dsputil"
1587 ffvhuff_encoder_select="dsputil huffman"
1588 flac_decoder_select="golomb"
1589 flac_encoder_select="dsputil golomb lpc"
1590 flashsv_decoder_deps="zlib"
1591 flashsv_encoder_deps="zlib"
1592 flashsv2_decoder_deps="zlib"
1593 flv_decoder_select="h263_decoder"
1594 flv_encoder_select="h263_encoder"
1595 fourxm_decoder_select="dsputil"
1596 fraps_decoder_select="dsputil huffman"
1597 g2m_decoder_deps="zlib"
1598 g2m_decoder_select="dsputil"
1599 h261_decoder_select="error_resilience mpegvideo"
1600 h261_encoder_select="aandcttables mpegvideoenc"
1601 h263_decoder_select="error_resilience h263_parser mpegvideo"
1602 h263_encoder_select="aandcttables mpegvideoenc"
1603 h263i_decoder_select="h263_decoder"
1604 h263p_encoder_select="h263_encoder"
1605 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1606 h264_decoder_suggest="error_resilience"
1607 hevc_decoder_select="dsputil golomb videodsp"
1608 huffyuv_decoder_select="dsputil"
1609 huffyuv_encoder_select="dsputil huffman"
1610 iac_decoder_select="dsputil fft mdct sinewin"
1611 imc_decoder_select="dsputil fft mdct sinewin"
1612 indeo3_decoder_select="hpeldsp"
1613 interplay_video_decoder_select="hpeldsp"
1614 jpegls_decoder_select="dsputil golomb hpeldsp"
1615 jpegls_encoder_select="golomb"
1616 jv_decoder_select="dsputil"
1617 lagarith_decoder_select="dsputil"
1618 ljpeg_encoder_select="aandcttables mpegvideoenc"
1619 loco_decoder_select="golomb"
1620 mdec_decoder_select="dsputil error_resilience mpegvideo"
1621 metasound_decoder_select="lsp mdct sinewin"
1622 mimic_decoder_select="dsputil hpeldsp"
1623 mjpeg_decoder_select="dsputil hpeldsp"
1624 mjpegb_decoder_select="dsputil hpeldsp"
1625 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1626 mlp_decoder_select="dsputil mlp_parser"
1627 motionpixels_decoder_select="dsputil"
1628 mp1_decoder_select="mpegaudio"
1629 mp1float_decoder_select="mpegaudio"
1630 mp2_decoder_select="mpegaudio"
1631 mp2float_decoder_select="mpegaudio"
1632 mp3_decoder_select="mpegaudio"
1633 mp3adu_decoder_select="mpegaudio"
1634 mp3adufloat_decoder_select="mpegaudio"
1635 mp3float_decoder_select="mpegaudio"
1636 mp3on4_decoder_select="mpegaudio"
1637 mp3on4float_decoder_select="mpegaudio"
1638 mpc7_decoder_select="dsputil mpegaudiodsp"
1639 mpc8_decoder_select="dsputil mpegaudiodsp"
1640 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1641 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1642 mpeg1video_decoder_select="error_resilience mpegvideo"
1643 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1644 mpeg2video_decoder_select="error_resilience mpegvideo"
1645 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1646 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1647 mpeg4_encoder_select="h263_encoder"
1648 msmpeg4v1_decoder_select="h263_decoder"
1649 msmpeg4v2_decoder_select="h263_decoder"
1650 msmpeg4v2_encoder_select="h263_encoder"
1651 msmpeg4v3_decoder_select="h263_decoder"
1652 msmpeg4v3_encoder_select="h263_encoder"
1653 mss2_decoder_select="error_resilience vc1_decoder"
1654 mxpeg_decoder_select="dsputil hpeldsp"
1655 nellymoser_decoder_select="mdct sinewin"
1656 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1657 nuv_decoder_select="dsputil lzo"
1658 png_decoder_deps="zlib"
1659 png_decoder_select="dsputil"
1660 png_encoder_deps="zlib"
1661 png_encoder_select="dsputil"
1662 prores_decoder_select="dsputil"
1663 prores_encoder_select="dsputil"
1664 qcelp_decoder_select="lsp"
1665 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1666 ra_144_encoder_select="audio_frame_queue lpc"
1667 ralf_decoder_select="golomb"
1668 rv10_decoder_select="error_resilience h263_decoder"
1669 rv10_encoder_select="h263_encoder"
1670 rv20_decoder_select="error_resilience h263_decoder"
1671 rv20_encoder_select="h263_encoder"
1672 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1673 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1674 shorten_decoder_select="golomb"
1675 sipr_decoder_select="lsp"
1676 sp5x_decoder_select="dsputil hpeldsp"
1677 svq1_decoder_select="hpeldsp"
1678 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1679 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1680 svq3_decoder_suggest="error_resilience zlib"
1681 tak_decoder_select="dsputil"
1682 theora_decoder_select="vp3_decoder"
1683 tiff_decoder_suggest="zlib"
1684 tiff_encoder_suggest="zlib"
1685 thp_decoder_select="dsputil hpeldsp"
1686 truehd_decoder_select="mlp_decoder"
1687 truemotion2_decoder_select="dsputil"
1688 truespeech_decoder_select="dsputil"
1689 tscc_decoder_deps="zlib"
1690 twinvq_decoder_select="mdct lsp sinewin"
1691 utvideo_decoder_select="dsputil"
1692 utvideo_encoder_select="dsputil huffman"
1693 vble_decoder_select="dsputil"
1694 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1695 vc1image_decoder_select="vc1_decoder"
1696 vorbis_decoder_select="mdct"
1697 vorbis_encoder_select="mdct"
1698 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1699 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1700 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1701 vp6a_decoder_select="vp6_decoder"
1702 vp6f_decoder_select="vp6_decoder"
1703 vp8_decoder_select="h264pred videodsp"
1704 webp_decoder_select="vp8_decoder"
1705 wmapro_decoder_select="mdct sinewin"
1706 wmav1_decoder_select="mdct sinewin"
1707 wmav1_encoder_select="mdct sinewin"
1708 wmav2_decoder_select="mdct sinewin"
1709 wmav2_encoder_select="mdct sinewin"
1710 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1711 wmv1_decoder_select="h263_decoder"
1712 wmv1_encoder_select="h263_encoder"
1713 wmv2_decoder_select="h263_decoder videodsp"
1714 wmv2_encoder_select="h263_encoder"
1715 wmv3_decoder_select="vc1_decoder"
1716 wmv3image_decoder_select="wmv3_decoder"
1717 zerocodec_decoder_deps="zlib"
1718 zlib_decoder_deps="zlib"
1719 zlib_encoder_deps="zlib"
1720 zmbv_decoder_deps="zlib"
1721 zmbv_encoder_deps="zlib"
1722
1723 # hardware accelerators
1724 dxva2_deps="dxva2api_h"
1725 vaapi_deps="va_va_h"
1726 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1727 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1728 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1729
1730 h263_vaapi_hwaccel_deps="vaapi"
1731 h263_vaapi_hwaccel_select="h263_decoder"
1732 h263_vdpau_hwaccel_deps="vdpau"
1733 h263_vdpau_hwaccel_select="h263_decoder"
1734 h264_dxva2_hwaccel_deps="dxva2"
1735 h264_dxva2_hwaccel_select="h264_decoder"
1736 h264_vaapi_hwaccel_deps="vaapi"
1737 h264_vaapi_hwaccel_select="h264_decoder"
1738 h264_vda_hwaccel_deps="vda"
1739 h264_vda_hwaccel_select="h264_decoder"
1740 h264_vdpau_hwaccel_deps="vdpau"
1741 h264_vdpau_hwaccel_select="h264_decoder"
1742 mpeg1_vdpau_hwaccel_deps="vdpau"
1743 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1744 mpeg2_dxva2_hwaccel_deps="dxva2"
1745 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1746 mpeg2_vaapi_hwaccel_deps="vaapi"
1747 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1748 mpeg2_vdpau_hwaccel_deps="vdpau"
1749 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1750 mpeg4_vaapi_hwaccel_deps="vaapi"
1751 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1752 mpeg4_vdpau_hwaccel_deps="vdpau"
1753 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1754 vc1_dxva2_hwaccel_deps="dxva2"
1755 vc1_dxva2_hwaccel_select="vc1_decoder"
1756 vc1_vaapi_hwaccel_deps="vaapi"
1757 vc1_vaapi_hwaccel_select="vc1_decoder"
1758 vc1_vdpau_hwaccel_deps="vdpau"
1759 vc1_vdpau_hwaccel_select="vc1_decoder"
1760 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1761 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1762 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1763
1764 # parsers
1765 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1766 mpeg4video_parser_select="error_resilience mpegvideo"
1767 mpegvideo_parser_select="error_resilience mpegvideo"
1768 vc1_parser_select="mpegvideo"
1769
1770 # external libraries
1771 libfaac_encoder_deps="libfaac"
1772 libfaac_encoder_select="audio_frame_queue"
1773 libfdk_aac_decoder_deps="libfdk_aac"
1774 libfdk_aac_encoder_deps="libfdk_aac"
1775 libfdk_aac_encoder_select="audio_frame_queue"
1776 libgsm_decoder_deps="libgsm"
1777 libgsm_encoder_deps="libgsm"
1778 libgsm_ms_decoder_deps="libgsm"
1779 libgsm_ms_encoder_deps="libgsm"
1780 libilbc_decoder_deps="libilbc"
1781 libilbc_encoder_deps="libilbc"
1782 libmp3lame_encoder_deps="libmp3lame"
1783 libmp3lame_encoder_select="audio_frame_queue"
1784 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1785 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1786 libopencore_amrnb_encoder_select="audio_frame_queue"
1787 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1788 libopenjpeg_decoder_deps="libopenjpeg"
1789 libopenjpeg_encoder_deps="libopenjpeg"
1790 libopus_decoder_deps="libopus"
1791 libopus_encoder_deps="libopus"
1792 libopus_encoder_select="audio_frame_queue"
1793 libschroedinger_decoder_deps="libschroedinger"
1794 libschroedinger_encoder_deps="libschroedinger"
1795 libspeex_decoder_deps="libspeex"
1796 libspeex_encoder_deps="libspeex"
1797 libspeex_encoder_select="audio_frame_queue"
1798 libtheora_encoder_deps="libtheora"
1799 libvo_aacenc_encoder_deps="libvo_aacenc"
1800 libvo_aacenc_encoder_select="audio_frame_queue"
1801 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1802 libvorbis_encoder_deps="libvorbis"
1803 libvorbis_encoder_select="audio_frame_queue"
1804 libvpx_vp8_decoder_deps="libvpx"
1805 libvpx_vp8_encoder_deps="libvpx"
1806 libvpx_vp9_decoder_deps="libvpx"
1807 libvpx_vp9_encoder_deps="libvpx"
1808 libwavpack_encoder_deps="libwavpack"
1809 libx264_encoder_deps="libx264"
1810 libxavs_encoder_deps="libxavs"
1811 libxvid_encoder_deps="libxvid"
1812
1813 # demuxers / muxers
1814 ac3_demuxer_select="ac3_parser"
1815 asf_demuxer_select="riffdec"
1816 asf_muxer_select="riffenc"
1817 asf_stream_muxer_select="asf_muxer"
1818 avi_demuxer_select="riffdec"
1819 avi_muxer_select="riffenc"
1820 avisynth_demuxer_deps="avisynth"
1821 avisynth_demuxer_select="riffdec"
1822 caf_demuxer_select="riffdec"
1823 dirac_demuxer_select="dirac_parser"
1824 dxa_demuxer_select="riffdec"
1825 eac3_demuxer_select="ac3_parser"
1826 f4v_muxer_select="mov_muxer"
1827 flac_demuxer_select="flac_parser"
1828 hls_muxer_select="mpegts_muxer"
1829 ipod_muxer_select="mov_muxer"
1830 ismv_muxer_select="mov_muxer"
1831 matroska_audio_muxer_select="matroska_muxer"
1832 matroska_demuxer_select="riffdec"
1833 matroska_demuxer_suggest="bzlib lzo zlib"
1834 matroska_muxer_select="riffenc"
1835 mmf_muxer_select="riffenc"
1836 mov_demuxer_select="riffdec"
1837 mov_demuxer_suggest="zlib"
1838 mov_muxer_select="riffenc rtpenc_chain"
1839 mp3_demuxer_select="mpegaudio_parser"
1840 mp4_muxer_select="mov_muxer"
1841 mpegts_muxer_select="adts_muxer latm_muxer"
1842 mpegtsraw_demuxer_select="mpegts_demuxer"
1843 mxf_d10_muxer_select="mxf_muxer"
1844 nut_muxer_select="riffenc"
1845 nuv_demuxer_select="riffdec"
1846 ogg_demuxer_select="golomb"
1847 psp_muxer_select="mov_muxer"
1848 rtp_demuxer_select="sdp_demuxer"
1849 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1850 rtsp_demuxer_select="http_protocol rtpdec"
1851 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1852 sap_demuxer_select="sdp_demuxer"
1853 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1854 sdp_demuxer_select="rtpdec"
1855 smoothstreaming_muxer_select="ismv_muxer"
1856 spdif_muxer_select="aac_parser"
1857 tak_demuxer_select="tak_parser"
1858 tg2_muxer_select="mov_muxer"
1859 tgp_muxer_select="mov_muxer"
1860 w64_demuxer_select="wav_demuxer"
1861 wav_demuxer_select="riffdec"
1862 wav_muxer_select="riffenc"
1863 webm_muxer_select="riffenc"
1864 wtv_demuxer_select="riffdec"
1865 xmv_demuxer_select="riffdec"
1866 xwma_demuxer_select="riffdec"
1867
1868 # indevs / outdevs
1869 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1870 alsa_outdev_deps="alsa_asoundlib_h"
1871 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1872 dv1394_indev_deps="dv1394"
1873 dv1394_indev_select="dv_demuxer"
1874 fbdev_indev_deps="linux_fb_h"
1875 jack_indev_deps="jack_jack_h pthreads"
1876 libcdio_indev_deps="libcdio"
1877 libdc1394_indev_deps="libdc1394"
1878 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1879 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1880 pulse_indev_deps="libpulse"
1881 sndio_indev_deps="sndio_h"
1882 sndio_outdev_deps="sndio_h"
1883 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1884 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1885 vfwcap_indev_extralibs="-lavicap32"
1886 x11grab_indev_deps="x11grab XShmCreateImage"
1887
1888 # protocols
1889 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1890 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1891 ffrtmpcrypt_protocol_select="tcp_protocol"
1892 ffrtmphttp_protocol_deps="!librtmp_protocol"
1893 ffrtmphttp_protocol_select="http_protocol"
1894 gopher_protocol_select="network"
1895 httpproxy_protocol_select="tcp_protocol"
1896 http_protocol_select="tcp_protocol"
1897 https_protocol_select="tls_protocol"
1898 librtmp_protocol_deps="librtmp"
1899 librtmpe_protocol_deps="librtmp"
1900 librtmps_protocol_deps="librtmp"
1901 librtmpt_protocol_deps="librtmp"
1902 librtmpte_protocol_deps="librtmp"
1903 mmsh_protocol_select="http_protocol"
1904 mmst_protocol_select="network"
1905 rtmp_protocol_deps="!librtmp_protocol"
1906 rtmp_protocol_select="tcp_protocol"
1907 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1908 rtmps_protocol_deps="!librtmp_protocol"
1909 rtmps_protocol_select="tls_protocol"
1910 rtmpt_protocol_select="ffrtmphttp_protocol"
1911 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1912 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1913 rtp_protocol_select="udp_protocol"
1914 sctp_protocol_deps="struct_sctp_event_subscribe"
1915 sctp_protocol_select="network"
1916 srtp_protocol_select="rtp_protocol"
1917 tcp_protocol_select="network"
1918 tls_protocol_deps_any="openssl gnutls"
1919 tls_protocol_select="tcp_protocol"
1920 udp_protocol_select="network"
1921 unix_protocol_deps="sys_un_h"
1922 unix_protocol_select="network"
1923
1924 # filters
1925 blackframe_filter_deps="gpl"
1926 boxblur_filter_deps="gpl"
1927 cropdetect_filter_deps="gpl"
1928 delogo_filter_deps="gpl"
1929 drawtext_filter_deps="libfreetype"
1930 frei0r_filter_deps="frei0r dlopen strtok_r"
1931 frei0r_filter_extralibs='$ldl'
1932 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1933 frei0r_src_filter_extralibs='$ldl'
1934 hqdn3d_filter_deps="gpl"
1935 interlace_filter_deps="gpl"
1936 resample_filter_deps="avresample"
1937 ocv_filter_deps="libopencv"
1938 scale_filter_deps="swscale"
1939 yadif_filter_deps="gpl"
1940
1941 # libraries
1942 avcodec_deps="avutil"
1943 avdevice_deps="avutil avcodec avformat"
1944 avfilter_deps="avutil"
1945 avformat_deps="avutil avcodec"
1946 avresample_deps="avutil"
1947 swscale_deps="avutil"
1948
1949 # programs
1950 avconv_deps="avcodec avfilter avformat avresample swscale"
1951 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
1952                fps_filter null_filter resample_filter scale_filter
1953                setpts_filter trim_filter"
1954 avplay_deps="avcodec avformat avresample swscale sdl"
1955 avplay_select="rdft"
1956 avprobe_deps="avcodec avformat"
1957 avserver_deps="avformat fork !shared"
1958 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
1959 avserver_extralibs='$ldl'
1960
1961 doc_deps="texi2html"
1962
1963 # default parameters
1964
1965 logfile="config.log"
1966
1967 # installation paths
1968 prefix_default="/usr/local"
1969 bindir_default='${prefix}/bin'
1970 datadir_default='${prefix}/share/avconv'
1971 docdir_default='${prefix}/share/doc/libav'
1972 incdir_default='${prefix}/include'
1973 libdir_default='${prefix}/lib'
1974 mandir_default='${prefix}/share/man'
1975 shlibdir_default="$libdir_default"
1976
1977 # toolchain
1978 ar_default="ar"
1979 cc_default="gcc"
1980 host_cc_default="gcc"
1981 cp_f="cp -f"
1982 ln_s="ln -s -f"
1983 nm_default="nm -g"
1984 objformat="elf"
1985 pkg_config_default=pkg-config
1986 ranlib="ranlib"
1987 strip="strip"
1988 yasmexe="yasm"
1989
1990 nogas=":"
1991
1992 # machine
1993 arch_default=$(uname -m)
1994 cpu="generic"
1995
1996 # OS
1997 target_os_default=$(tolower $(uname -s))
1998 host_os=$target_os_default
1999
2000 # configurable options
2001 enable $LIBRARY_LIST $PROGRAM_LIST
2002
2003 enable asm
2004 enable debug
2005 enable doc
2006 enable optimizations
2007 enable safe_bitstream_reader
2008 enable static
2009 enable swscale_alpha
2010
2011 # By default, enable only those hwaccels that have no external dependencies.
2012 enable dxva2 vdpau
2013
2014 # build settings
2015 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2016 LIBPREF="lib"
2017 LIBSUF=".a"
2018 FULLNAME='$(NAME)$(BUILDSUF)'
2019 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2020 SLIBPREF="lib"
2021 SLIBSUF=".so"
2022 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2023 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2024 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2025 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2026 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2027 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2028
2029 asflags_filter=echo
2030 cflags_filter=echo
2031 ldflags_filter=echo
2032
2033 AS_C='-c'
2034 AS_O='-o $@'
2035 CC_C='-c'
2036 CC_E='-E -o $@'
2037 CC_O='-o $@'
2038 LD_O='-o $@'
2039 LD_LIB='-l%'
2040 LD_PATH='-L'
2041 HOSTCC_C='-c'
2042 HOSTCC_O='-o $@'
2043 HOSTLD_O='-o $@'
2044
2045 host_cflags='-O3 -g'
2046 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2047 host_libs='-lm'
2048 host_cflags_filter=echo
2049 host_ldflags_filter=echo
2050
2051 target_path='$(CURDIR)'
2052
2053 # since the object filename is not given with the -MM flag, the compiler
2054 # is only able to print the basename, and we must add the path ourselves
2055 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2056 DEPFLAGS='-MM'
2057
2058 # find source path
2059 if test -f configure; then
2060     source_path=.
2061 else
2062     source_path=$(cd $(dirname "$0"); pwd)
2063     echo "$source_path" | grep -q '[[:blank:]]' &&
2064         die "Out of tree builds are impossible with whitespace in source path."
2065     test -e "$source_path/config.h" &&
2066         die "Out of tree builds are impossible with config.h in source dir."
2067 fi
2068
2069 for v in "$@"; do
2070     r=${v#*=}
2071     l=${v%"$r"}
2072     r=$(sh_quote "$r")
2073     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2074 done
2075
2076 find_things(){
2077     thing=$1
2078     pattern=$2
2079     file=$source_path/$3
2080     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2081 }
2082
2083 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2084 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2085 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2086 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2087 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2088 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2089 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2090 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2091 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2092 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2093 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2094
2095 ALL_COMPONENTS="
2096     $BSF_LIST
2097     $DECODER_LIST
2098     $DEMUXER_LIST
2099     $ENCODER_LIST
2100     $FILTER_LIST
2101     $HWACCEL_LIST
2102     $INDEV_LIST
2103     $MUXER_LIST
2104     $OUTDEV_LIST
2105     $PARSER_LIST
2106     $PROTOCOL_LIST
2107 "
2108
2109 for n in $COMPONENT_LIST; do
2110     v=$(toupper ${n%s})_LIST
2111     eval enable \$$v
2112     eval ${n}_if_any="\$$v"
2113 done
2114
2115 enable $ARCH_EXT_LIST
2116
2117 die_unknown(){
2118     echo "Unknown option \"$1\"."
2119     echo "See $0 --help for available options."
2120     exit 1
2121 }
2122
2123 print_3_columns() {
2124     cat | tr ' ' '\n' | sort | pr -r -3 -t
2125 }
2126
2127 show_list() {
2128     suffix=_$1
2129     shift
2130     echo $* | sed s/$suffix//g | print_3_columns
2131     exit 0
2132 }
2133
2134 rand_list(){
2135     IFS=', '
2136     set -- $*
2137     unset IFS
2138     for thing; do
2139         comp=${thing%:*}
2140         prob=${thing#$comp}
2141         prob=${prob#:}
2142         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2143         echo "prob ${prob:-0.5}"
2144         printf '%s\n' $comp
2145     done
2146 }
2147
2148 do_random(){
2149     action=$1
2150     shift
2151     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2152     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2153 }
2154
2155 for opt do
2156     optval="${opt#*=}"
2157     case "$opt" in
2158         --extra-ldflags=*)
2159             add_ldflags $optval
2160         ;;
2161         --extra-libs=*)
2162             add_extralibs $optval
2163         ;;
2164         --disable-devices)
2165             disable $INDEV_LIST $OUTDEV_LIST
2166         ;;
2167         --enable-debug=*)
2168             debuglevel="$optval"
2169         ;;
2170         --disable-programs)
2171             disable $PROGRAM_LIST
2172         ;;
2173         --disable-everything)
2174             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2175         ;;
2176         --disable-all)
2177             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2178             disable $LIBRARY_LIST $PROGRAM_LIST doc
2179         ;;
2180         --enable-random|--disable-random)
2181             action=${opt%%-random}
2182             do_random ${action#--} $COMPONENT_LIST
2183         ;;
2184         --enable-random=*|--disable-random=*)
2185             action=${opt%%-random=*}
2186             do_random ${action#--} $optval
2187         ;;
2188         --enable-*=*|--disable-*=*)
2189             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2190             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2191             eval list=\$$(toupper $thing)_LIST
2192             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2193             $action $(filter "$name" $list)
2194         ;;
2195         --enable-?*|--disable-?*)
2196             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2197             if is_in $option $COMPONENT_LIST; then
2198                 test $action = disable && action=unset
2199                 eval $action \$$(toupper ${option%s})_LIST
2200             elif is_in $option $CMDLINE_SELECT; then
2201                 $action $option
2202             else
2203                 die_unknown $opt
2204             fi
2205         ;;
2206         --list-*)
2207             NAME="${opt#--list-}"
2208             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2209             NAME=${NAME%s}
2210             eval show_list $NAME \$$(toupper $NAME)_LIST
2211         ;;
2212         --help|-h) show_help
2213         ;;
2214         *)
2215             optname="${opt%%=*}"
2216             optname="${optname#--}"
2217             optname=$(echo "$optname" | sed 's/-/_/g')
2218             if is_in $optname $CMDLINE_SET; then
2219                 eval $optname='$optval'
2220             elif is_in $optname $CMDLINE_APPEND; then
2221                 append $optname "$optval"
2222             else
2223                 die_unknown $opt
2224             fi
2225         ;;
2226     esac
2227 done
2228
2229 disabled logging && logfile=/dev/null
2230
2231 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2232 set >> $logfile
2233
2234 test -n "$cross_prefix" && enable cross_compile
2235
2236 if enabled cross_compile; then
2237     test -n "$arch" && test -n "$target_os" ||
2238         die "Must specify target arch and OS when cross-compiling"
2239 fi
2240
2241 ar_default="${cross_prefix}${ar_default}"
2242 cc_default="${cross_prefix}${cc_default}"
2243 nm_default="${cross_prefix}${nm_default}"
2244 pkg_config_default="${cross_prefix}${pkg_config_default}"
2245 ranlib="${cross_prefix}${ranlib}"
2246 strip="${cross_prefix}${strip}"
2247
2248 sysinclude_default="${sysroot}/usr/include"
2249
2250 case "$toolchain" in
2251     clang-asan)
2252         cc_default="clang"
2253         add_cflags  -fsanitize=address
2254         add_ldflags -fsanitize=address
2255     ;;
2256     clang-tsan)
2257         cc_default="clang"
2258         add_cflags  -fsanitize=thread -pie
2259         add_ldflags -fsanitize=thread -pie
2260     ;;
2261     gcc-asan)
2262         cc_default="gcc"
2263         add_cflags  -fsanitize=address
2264         add_ldflags -fsanitize=address
2265     ;;
2266     gcc-tsan)
2267         cc_default="gcc"
2268         add_cflags  -fsanitize=thread -pie -fPIC
2269         add_ldflags -fsanitize=thread -pie -fPIC
2270     ;;
2271     valgrind-massif)
2272         target_exec_default="valgrind"
2273         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2274     ;;
2275     valgrind-memcheck)
2276         target_exec_default="valgrind"
2277         target_exec_args="--track-origins=yes --leak-check=full"
2278     ;;
2279     msvc)
2280         cc_default="c99wrap cl"
2281         ld_default="c99wrap link"
2282         nm_default="dumpbin -symbols"
2283         ar_default="lib"
2284         target_os_default="win32"
2285     ;;
2286     icl)
2287         cc_default="c99wrap -noconv icl"
2288         ld_default="c99wrap xilink"
2289         nm_default="dumpbin -symbols"
2290         ar_default="xilib"
2291         target_os_default="win32"
2292     ;;
2293     gcov)
2294         add_cflags  -fprofile-arcs -ftest-coverage
2295         add_ldflags -fprofile-arcs -ftest-coverage
2296     ;;
2297     hardened)
2298         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2299         add_ldflags -Wl,-z,relro -Wl,-z,now
2300     ;;
2301     ?*)
2302         die "Unknown toolchain $toolchain"
2303     ;;
2304 esac
2305
2306 set_default arch cc pkg_config sysinclude target_exec target_os
2307 enabled cross_compile || host_cc_default=$cc
2308 set_default host_cc
2309
2310 if ! $pkg_config --version >/dev/null 2>&1; then
2311     warn "$pkg_config not found, library detection may fail."
2312     pkg_config=false
2313 fi
2314
2315 exesuf() {
2316     case $1 in
2317         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2318     esac
2319 }
2320
2321 EXESUF=$(exesuf $target_os)
2322 HOSTEXESUF=$(exesuf $host_os)
2323
2324 # set temporary file name
2325 : ${TMPDIR:=$TEMPDIR}
2326 : ${TMPDIR:=$TMP}
2327 : ${TMPDIR:=/tmp}
2328
2329 if ! check_cmd mktemp -u XXXXXX; then
2330     # simple replacement for missing mktemp
2331     # NOT SAFE FOR GENERAL USE
2332     mktemp(){
2333         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2334     }
2335 fi
2336
2337 tmpfile(){
2338     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2339         (set -C; exec > $tmp) 2>/dev/null ||
2340         die "Unable to create temporary file in $TMPDIR."
2341     append TMPFILES $tmp
2342     eval $1=$tmp
2343 }
2344
2345 trap 'rm -f -- $TMPFILES' EXIT
2346
2347 tmpfile TMPASM .asm
2348 tmpfile TMPC   .c
2349 tmpfile TMPE   $EXESUF
2350 tmpfile TMPH   .h
2351 tmpfile TMPO   .o
2352 tmpfile TMPS   .S
2353 tmpfile TMPSH  .sh
2354 tmpfile TMPV   .ver
2355
2356 unset -f mktemp
2357
2358 chmod +x $TMPE
2359
2360 # make sure we can execute files in $TMPDIR
2361 cat > $TMPSH 2>> $logfile <<EOF
2362 #! /bin/sh
2363 EOF
2364 chmod +x $TMPSH >> $logfile 2>&1
2365 if ! $TMPSH >> $logfile 2>&1; then
2366     cat <<EOF
2367 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2368 variable to another directory and make sure that it is not mounted noexec.
2369 EOF
2370     die "Sanity test failed."
2371 fi
2372
2373 ccc_flags(){
2374     for flag; do
2375         case $flag in
2376             -std=c99)           echo -c99                       ;;
2377             -mcpu=*)            echo -arch ${flag#*=}           ;;
2378             -mieee)             echo -ieee                      ;;
2379             -O*|-fast)          echo $flag                      ;;
2380             -fno-math-errno)    echo -assume nomath_errno       ;;
2381             -g)                 echo -g3                        ;;
2382             -Wall)              echo -msg_enable level2         ;;
2383             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2384             -Wl,*)              echo $flag                      ;;
2385             -f*|-W*)                                            ;;
2386             *)                  echo $flag                      ;;
2387         esac
2388    done
2389 }
2390
2391 cparser_flags(){
2392     for flag; do
2393         case $flag in
2394             -Wno-switch)             echo -Wno-switch-enum ;;
2395             -Wno-format-zero-length) ;;
2396             -Wdisabled-optimization) ;;
2397             -Wno-pointer-sign)       echo -Wno-other ;;
2398             *)                       echo $flag ;;
2399         esac
2400     done
2401 }
2402
2403 msvc_common_flags(){
2404     for flag; do
2405         case $flag in
2406             # In addition to specifying certain flags under the compiler
2407             # specific filters, they must be specified here as well or else the
2408             # generic catch all at the bottom will print the original flag.
2409             -Wall)                ;;
2410             -std=c99)             ;;
2411             # Common flags
2412             -fomit-frame-pointer) ;;
2413             -g)                   echo -Z7 ;;
2414             -fno-math-errno)      ;;
2415             -fno-common)          ;;
2416             -fno-signed-zeros)    ;;
2417             -fPIC)                ;;
2418             -mthumb)              ;;
2419             -march=*)             ;;
2420             -lz)                  echo zlib.lib ;;
2421             -lavifil32)           echo vfw32.lib ;;
2422             -lavicap32)           echo vfw32.lib user32.lib ;;
2423             -l*)                  echo ${flag#-l}.lib ;;
2424             *)                    echo $flag ;;
2425         esac
2426     done
2427 }
2428
2429 msvc_flags(){
2430     msvc_common_flags "$@"
2431     for flag; do
2432         case $flag in
2433             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2434                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2435                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2436                                        -wd4273 ;;
2437         esac
2438     done
2439 }
2440
2441 icl_flags(){
2442     msvc_common_flags "$@"
2443     for flag; do
2444         case $flag in
2445             # Despite what Intel's documentation says -Wall, which is supported
2446             # on Windows, does enable remarks so disable them here.
2447             -Wall)                echo $flag -Qdiag-disable:remark ;;
2448             -std=c99)             echo -Qstd=c99 ;;
2449         esac
2450     done
2451 }
2452
2453 pgi_flags(){
2454     for flag; do
2455         case $flag in
2456             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2457             -fomit-frame-pointer) echo -Mnoframe ;;
2458             -g)                   echo -gopt ;;
2459             *)                    echo $flag ;;
2460         esac
2461     done
2462 }
2463
2464 suncc_flags(){
2465     for flag; do
2466         case $flag in
2467             -march=*|-mcpu=*)
2468                 case "${flag#*=}" in
2469                     native)                   echo -xtarget=native       ;;
2470                     v9|niagara)               echo -xarch=sparc          ;;
2471                     ultrasparc)               echo -xarch=sparcvis       ;;
2472                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2473                     i586|pentium)             echo -xchip=pentium        ;;
2474                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2475                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2476                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2477                     pentium4*)          echo -xtarget=pentium4           ;;
2478                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2479                     *-sse3)             echo -xarch=sse3                 ;;
2480                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2481                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2482                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2483                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2484                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2485                     k8|opteron|athlon64|athlon-fx)
2486                                                echo -xarch=sse2a         ;;
2487                     athlon*)                   echo -xarch=pentium_proa  ;;
2488                 esac
2489                 ;;
2490             -std=c99)             echo -xc99              ;;
2491             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2492             -fPIC)                echo -KPIC -xcode=pic32 ;;
2493             -W*,*)                echo $flag              ;;
2494             -f*-*|-W*|-mimpure-text)                      ;;
2495             -shared)              echo -G                 ;;
2496             *)                    echo $flag              ;;
2497         esac
2498     done
2499 }
2500
2501 tms470_flags(){
2502     for flag; do
2503         case $flag in
2504             -march=*|-mcpu=*)
2505                 case "${flag#*=}" in
2506                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2507                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2508                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2509                     armv6*|arm11*)          echo -mv=6   ;;
2510                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2511                                             echo -mv=5e  ;;
2512                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2513                 esac
2514                 ;;
2515             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2516             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2517             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2518             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2519             -msoft-float)   echo --float_support=vfplib       ;;
2520             -O[0-3]|-mf=*)  echo $flag                        ;;
2521             -g)             echo -g -mn                       ;;
2522             -pds=*)         echo $flag                        ;;
2523             -D*|-I*)        echo $flag                        ;;
2524             --gcc|--abi=*)  echo $flag                        ;;
2525             -me)            echo $flag                        ;;
2526         esac
2527     done
2528 }
2529
2530 probe_cc(){
2531     pfx=$1
2532     _cc=$2
2533
2534     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2535     unset _ld_o _ldflags _ld_lib _ld_path
2536     unset _depflags _DEPCMD _DEPFLAGS
2537     _flags_filter=echo
2538
2539     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2540         _type=llvm_gcc
2541         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2542         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2543         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2544         _cflags_speed='-O3'
2545         _cflags_size='-Os'
2546     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2547         _type=gcc
2548         gcc_version=$($_cc --version | head -n1)
2549         gcc_basever=$($_cc -dumpversion)
2550         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2551         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2552         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2553         if ! $_cc -dumpversion | grep -q '^2\.'; then
2554             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2555         fi
2556         _cflags_speed='-O3'
2557         _cflags_size='-Os'
2558     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2559         _type=icc
2560         _ident=$($_cc --version | head -n1)
2561         _depflags='-MMD'
2562         _cflags_speed='-O3'
2563         _cflags_size='-Os'
2564         _cflags_noopt='-O1'
2565     elif $_cc -v 2>&1 | grep -q xlc; then
2566         _type=xlc
2567         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2568         _cflags_speed='-O5'
2569         _cflags_size='-O5 -qcompact'
2570     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2571         _type=ccc
2572         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2573         _DEPFLAGS='-M'
2574         _cflags_speed='-fast'
2575         _cflags_size='-O1'
2576         _flags_filter=ccc_flags
2577     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2578         test -d "$sysroot" || die "No valid sysroot specified."
2579         _type=armcc
2580         _ident=$($_cc --vsn | head -n1)
2581         armcc_conf="$PWD/armcc.conf"
2582         $_cc --arm_linux_configure                 \
2583              --arm_linux_config_file="$armcc_conf" \
2584              --configure_sysroot="$sysroot"        \
2585              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2586              die "Error creating armcc configuration file."
2587         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2588         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2589         as_default="${cross_prefix}gcc"
2590         _depflags='-MMD'
2591         _cflags_speed='-O3'
2592         _cflags_size='-Os'
2593     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2594         _type=tms470
2595         _ident=$($_cc -version | head -n1 | tr -s ' ')
2596         _flags='--gcc --abi=eabi -me'
2597         _cc_e='-ppl -fe=$@'
2598         _cc_o='-fe=$@'
2599         _depflags='-ppa -ppd=$(@:.o=.d)'
2600         _cflags_speed='-O3 -mf=5'
2601         _cflags_size='-O3 -mf=2'
2602         _flags_filter=tms470_flags
2603     elif $_cc -v 2>&1 | grep -q clang; then
2604         _type=clang
2605         _ident=$($_cc --version | head -n1)
2606         _depflags='-MMD'
2607         _cflags_speed='-O3'
2608         _cflags_size='-Os'
2609     elif $_cc -V 2>&1 | grep -q Sun; then
2610         _type=suncc
2611         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2612         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2613         _DEPFLAGS='-xM1 -xc99'
2614         _ldflags='-std=c99'
2615         _cflags_speed='-O5'
2616         _cflags_size='-O5 -xspace'
2617         _flags_filter=suncc_flags
2618     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2619         _type=pathscale
2620         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2621         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2622         _cflags_speed='-O2'
2623         _cflags_size='-Os'
2624         _flags_filter='filter_out -Wdisabled-optimization'
2625     elif $_cc -v 2>&1 | grep -q Open64; then
2626         _type=open64
2627         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2628         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2629         _cflags_speed='-O2'
2630         _cflags_size='-Os'
2631         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2632     elif $_cc -V 2>&1 | grep -q Portland; then
2633         _type=pgi
2634         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2635         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2636         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2637         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2638         _cflags_noopt="-O1"
2639         _flags_filter=pgi_flags
2640     elif $_cc 2>&1 | grep -q Microsoft; then
2641         _type=msvc
2642         _ident=$($cc 2>&1 | head -n1)
2643         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2644         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2645         _cflags_speed="-O2"
2646         _cflags_size="-O1"
2647         # Nonstandard output options, to avoid msys path conversion issues.
2648         # Relies on wrapper to remap it.
2649         if $_cc 2>&1 | grep -q Linker; then
2650             _ld_o='-out $@'
2651         else
2652             _ld_o='-Fe$@'
2653         fi
2654         _cc_o='-Fo $@'
2655         _cc_e='-P -Fi $@'
2656         _flags_filter=msvc_flags
2657         _ld_lib='lib%.a'
2658         _ld_path='-libpath:'
2659         _flags='-nologo'
2660         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2661         if [ $pfx = hostcc ]; then
2662             append _cflags -Dsnprintf=_snprintf
2663         fi
2664     elif $_cc 2>&1 | grep -q Intel; then
2665         _type=icl
2666         _ident=$($cc 2>&1 | head -n1)
2667         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2668         # Not only is O3 broken on 13.x+ but it is slower on all previous
2669         # versions (tested) as well.
2670         _cflags_speed="-O2"
2671         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2672         # Nonstandard output options, to avoid msys path conversion issues.
2673         # Relies on wrapper to remap it.
2674         if $_cc 2>&1 | grep -q Linker; then
2675             _ld_o='-out $@'
2676         else
2677             _ld_o='-Fe$@'
2678         fi
2679         _cc_o='-Fo $@'
2680         _cc_e='-P'
2681         _flags_filter=icl_flags
2682         _ld_lib='lib%.a'
2683         _ld_path='-libpath:'
2684         # -Qdiag-error to make icl error when seeing certain unknown arguments
2685         _flags='-nologo -Qdiag-error:4044,10157'
2686         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2687         # with MSVC which enables it by default.
2688         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2689         if [ $pfx = hostcc ]; then
2690             append _cflags -Dsnprintf=_snprintf
2691         fi
2692     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2693         _type=cparser
2694         _ident=$($_cc --version | head -n1)
2695         _depflags='-MMD'
2696         _cflags_speed='-O4'
2697         _cflags_size='-O2'
2698         _flags_filter=cparser_flags
2699     fi
2700
2701     eval ${pfx}_type=\$_type
2702     eval ${pfx}_ident=\$_ident
2703 }
2704
2705 set_ccvars(){
2706     eval ${1}_C=\${_cc_c-\${${1}_C}}
2707     eval ${1}_E=\${_cc_e-\${${1}_E}}
2708     eval ${1}_O=\${_cc_o-\${${1}_O}}
2709
2710     if [ -n "$_depflags" ]; then
2711         eval ${1}_DEPFLAGS=\$_depflags
2712     else
2713         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2714         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2715         eval DEP${1}FLAGS=\$_flags
2716     fi
2717 }
2718
2719 probe_cc cc "$cc"
2720 cflags_filter=$_flags_filter
2721 cflags_speed=$_cflags_speed
2722 cflags_size=$_cflags_size
2723 cflags_noopt=$_cflags_noopt
2724 add_cflags $_flags $_cflags
2725 cc_ldflags=$_ldflags
2726 set_ccvars CC
2727
2728 probe_cc hostcc "$host_cc"
2729 host_cflags_filter=$_flags_filter
2730 add_host_cflags  $_flags $_cflags
2731 set_ccvars HOSTCC
2732
2733 test -n "$cc_type" && enable $cc_type ||
2734     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2735
2736 : ${as_default:=$cc}
2737 : ${dep_cc_default:=$cc}
2738 : ${ld_default:=$cc}
2739 : ${host_ld_default:=$host_cc}
2740 set_default ar as dep_cc ld host_ld
2741
2742 probe_cc as "$as"
2743 asflags_filter=$_flags_filter
2744 add_asflags $_flags $_cflags
2745 set_ccvars AS
2746
2747 probe_cc ld "$ld"
2748 ldflags_filter=$_flags_filter
2749 add_ldflags $_flags $_ldflags
2750 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2751 LD_O=${_ld_o-$LD_O}
2752 LD_LIB=${_ld_lib-$LD_LIB}
2753 LD_PATH=${_ld_path-$LD_PATH}
2754
2755 probe_cc hostld "$host_ld"
2756 host_ldflags_filter=$_flags_filter
2757 add_host_ldflags $_flags $_ldflags
2758 HOSTLD_O=${_ld_o-$HOSTLD_O}
2759
2760 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2761     probe_cc depcc "$dep_cc"
2762     CCDEP=${_DEPCMD:-$DEPCMD}
2763     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2764     DEPCCFLAGS=$_flags
2765 fi
2766
2767 if $ar 2>&1 | grep -q Microsoft; then
2768     arflags="-nologo"
2769     ar_o='-out:$@'
2770 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2771     arflags="rq"
2772     ar_o='$@'
2773 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2774     arflags='-Xany -r -c'
2775     ar_o='$@'
2776 else
2777     arflags="rc"
2778     ar_o='$@'
2779 fi
2780
2781 add_cflags $extra_cflags
2782 add_asflags $extra_cflags
2783
2784 if test -n "$sysroot"; then
2785     case "$cc_type" in
2786         gcc|llvm_gcc|clang)
2787             add_cppflags --sysroot="$sysroot"
2788             add_ldflags --sysroot="$sysroot"
2789         ;;
2790         tms470)
2791             add_cppflags -I"$sysinclude"
2792             add_ldflags  --sysroot="$sysroot"
2793         ;;
2794     esac
2795 fi
2796
2797 if test "$cpu" = host; then
2798     enabled cross_compile &&
2799         die "--cpu=host makes no sense when cross-compiling."
2800
2801     case "$cc_type" in
2802         gcc|llvm_gcc)
2803             check_native(){
2804                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2805                 sed -n "/cc1.*$1=/{
2806                             s/.*$1=\\([^ ]*\\).*/\\1/
2807                             p
2808                             q
2809                         }" $TMPE
2810             }
2811             cpu=$(check_native -march || check_native -mcpu)
2812         ;;
2813     esac
2814
2815     test "${cpu:-host}" = host &&
2816         die "--cpu=host not supported with compiler $cc"
2817 fi
2818
2819 # Deal with common $arch aliases
2820 case "$arch" in
2821     aarch64|arm64)
2822         arch="aarch64"
2823     ;;
2824     arm*)
2825         arch="arm"
2826     ;;
2827     mips*|IP*)
2828         arch="mips"
2829     ;;
2830     parisc*|hppa*)
2831         arch="parisc"
2832     ;;
2833     "Power Macintosh"|ppc*|powerpc*)
2834         arch="ppc"
2835     ;;
2836     s390|s390x)
2837         arch="s390"
2838     ;;
2839     sh4|sh)
2840         arch="sh4"
2841     ;;
2842     sun4u|sparc*)
2843         arch="sparc"
2844     ;;
2845     tilegx|tile-gx)
2846         arch="tilegx"
2847     ;;
2848     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2849         arch="x86"
2850     ;;
2851 esac
2852
2853 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2854 enable $arch
2855
2856 # Add processor-specific flags
2857 if enabled aarch64; then
2858
2859     case $cpu in
2860         armv*)
2861             cpuflags="-march=$cpu"
2862         ;;
2863         *)
2864             cpuflags="-mcpu=$cpu"
2865         ;;
2866     esac
2867
2868 elif enabled alpha; then
2869
2870     cpuflags="-mcpu=$cpu"
2871
2872 elif enabled arm; then
2873
2874     check_arm_arch() {
2875         check_cpp_condition stddef.h \
2876             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2877             $cpuflags
2878     }
2879
2880     probe_arm_arch() {
2881         if   check_arm_arch 4;        then echo armv4;
2882         elif check_arm_arch 4T;       then echo armv4t;
2883         elif check_arm_arch 5;        then echo armv5;
2884         elif check_arm_arch 5E;       then echo armv5e;
2885         elif check_arm_arch 5T;       then echo armv5t;
2886         elif check_arm_arch 5TE;      then echo armv5te;
2887         elif check_arm_arch 5TEJ;     then echo armv5te;
2888         elif check_arm_arch 6;        then echo armv6;
2889         elif check_arm_arch 6J;       then echo armv6j;
2890         elif check_arm_arch 6K;       then echo armv6k;
2891         elif check_arm_arch 6Z;       then echo armv6z;
2892         elif check_arm_arch 6ZK;      then echo armv6zk;
2893         elif check_arm_arch 6T2;      then echo armv6t2;
2894         elif check_arm_arch 7;        then echo armv7;
2895         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2896         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2897         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2898         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2899         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2900         fi
2901     }
2902
2903     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2904
2905     case $cpu in
2906         armv*)
2907             cpuflags="-march=$cpu"
2908             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2909         ;;
2910         *)
2911             cpuflags="-mcpu=$cpu"
2912             case $cpu in
2913                 cortex-a*)                               subarch=armv7a  ;;
2914                 cortex-r*)                               subarch=armv7r  ;;
2915                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2916                 arm11*)                                  subarch=armv6   ;;
2917                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2918                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2919                 *)                             subarch=$(probe_arm_arch) ;;
2920             esac
2921         ;;
2922     esac
2923
2924     case "$subarch" in
2925         armv5t*)    enable fast_clz                ;;
2926         armv[6-8]*) enable fast_clz fast_unaligned ;;
2927     esac
2928
2929 elif enabled avr32; then
2930
2931     case $cpu in
2932         ap7[02]0[0-2])
2933             subarch="avr32_ap"
2934             cpuflags="-mpart=$cpu"
2935         ;;
2936         ap)
2937             subarch="avr32_ap"
2938             cpuflags="-march=$cpu"
2939         ;;
2940         uc3[ab]*)
2941             subarch="avr32_uc"
2942             cpuflags="-mcpu=$cpu"
2943         ;;
2944         uc)
2945             subarch="avr32_uc"
2946             cpuflags="-march=$cpu"
2947         ;;
2948     esac
2949
2950 elif enabled bfin; then
2951
2952     cpuflags="-mcpu=$cpu"
2953
2954 elif enabled mips; then
2955
2956     cpuflags="-march=$cpu"
2957
2958 elif enabled ppc; then
2959
2960     case $(tolower $cpu) in
2961         601|ppc601|powerpc601)
2962             cpuflags="-mcpu=601"
2963             disable altivec
2964         ;;
2965         603*|ppc603*|powerpc603*)
2966             cpuflags="-mcpu=603"
2967             disable altivec
2968         ;;
2969         604*|ppc604*|powerpc604*)
2970             cpuflags="-mcpu=604"
2971             disable altivec
2972         ;;
2973         g3|75*|ppc75*|powerpc75*)
2974             cpuflags="-mcpu=750"
2975             disable altivec
2976         ;;
2977         g4|745*|ppc745*|powerpc745*)
2978             cpuflags="-mcpu=7450"
2979         ;;
2980         74*|ppc74*|powerpc74*)
2981             cpuflags="-mcpu=7400"
2982         ;;
2983         g5|970|ppc970|powerpc970)
2984             cpuflags="-mcpu=970"
2985         ;;
2986         power[3-7]*)
2987             cpuflags="-mcpu=$cpu"
2988         ;;
2989         cell)
2990             cpuflags="-mcpu=cell"
2991             enable ldbrx
2992         ;;
2993         e500mc)
2994             cpuflags="-mcpu=e500mc"
2995             disable altivec
2996         ;;
2997         e500v2)
2998             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2999             disable altivec
3000         ;;
3001         e500)
3002             cpuflags="-mcpu=8540 -mhard-float"
3003             disable altivec
3004         ;;
3005     esac
3006
3007 elif enabled sparc; then
3008
3009     case $cpu in
3010         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3011             cpuflags="-mcpu=$cpu"
3012             disable vis
3013         ;;
3014         ultrasparc*|niagara[234])
3015             cpuflags="-mcpu=$cpu"
3016         ;;
3017     esac
3018
3019 elif enabled x86; then
3020
3021     case $cpu in
3022         i[345]86|pentium)
3023             cpuflags="-march=$cpu"
3024             disable mmx
3025         ;;
3026         # targets that do NOT support nopl and conditional mov (cmov)
3027         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3028             cpuflags="-march=$cpu"
3029             disable i686
3030         ;;
3031         # targets that do support nopl and conditional mov (cmov)
3032         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3033             cpuflags="-march=$cpu"
3034             enable i686
3035             enable fast_cmov
3036         ;;
3037         # targets that do support conditional mov but on which it's slow
3038         pentium4|pentium4m|prescott|nocona)
3039             cpuflags="-march=$cpu"
3040             enable i686
3041             disable fast_cmov
3042         ;;
3043     esac
3044
3045 fi
3046
3047 if [ "$cpu" != generic ]; then
3048     add_cflags  $cpuflags
3049     add_asflags $cpuflags
3050 fi
3051
3052 # compiler sanity check
3053 check_exec <<EOF
3054 int main(void){ return 0; }
3055 EOF
3056 if test "$?" != 0; then
3057     echo "$cc is unable to create an executable file."
3058     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3059         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3060         echo "Only do this if you know what cross compiling means."
3061     fi
3062     die "C compiler test failed."
3063 fi
3064
3065 add_cppflags -D_ISOC99_SOURCE
3066 check_cflags -std=c99
3067 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3068 #include <stdlib.h>
3069 EOF
3070 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3071 #include <stdlib.h>
3072 EOF
3073
3074 check_host_cflags -std=c99
3075 check_host_cflags -Wall
3076
3077 check_64bit(){
3078     arch32=$1
3079     arch64=$2
3080     expr=$3
3081     check_code cc "" "int test[2*($expr) - 1]" &&
3082         subarch=$arch64 || subarch=$arch32
3083 }
3084
3085 case "$arch" in
3086     aarch64|alpha|ia64)
3087         spic=$shared
3088     ;;
3089     mips)
3090         check_64bit mips mips64 '_MIPS_SIM > 1'
3091         spic=$shared
3092     ;;
3093     parisc)
3094         check_64bit parisc parisc64 'sizeof(void *) > 4'
3095         spic=$shared
3096     ;;
3097     ppc)
3098         check_64bit ppc ppc64 'sizeof(void *) > 4'
3099         spic=$shared
3100     ;;
3101     sparc)
3102         check_64bit sparc sparc64 'sizeof(void *) > 4'
3103         spic=$shared
3104     ;;
3105     x86)
3106         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3107         if test "$subarch" = "x86_64"; then
3108             spic=$shared
3109         fi
3110     ;;
3111 esac
3112
3113 enable $subarch
3114 enabled spic && enable_weak pic
3115
3116 # OS specific
3117 case $target_os in
3118     aix)
3119         SHFLAGS=-shared
3120         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3121         enabled shared && add_ldflags -Wl,-brtl
3122         ;;
3123     haiku)
3124         prefix_default="/boot/common"
3125         network_extralibs="-lnetwork"
3126         host_libs=
3127         ;;
3128     sunos)
3129         SHFLAGS='-shared -Wl,-h,$$(@F)'
3130         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3131         network_extralibs="-lsocket -lnsl"
3132         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3133         # When using suncc to build, the Solaris linker will mark
3134         # an executable with each instruction set encountered by
3135         # the Solaris assembler.  As our libraries contain their own
3136         # guards for processor-specific code, instead suppress
3137         # generation of the HWCAPS ELF section on Solaris x86 only.
3138         enabled_all suncc x86 &&
3139             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3140             add_ldflags -Wl,-M,mapfile
3141         nm_default='nm -P -g'
3142         ;;
3143     netbsd)
3144         disable symver
3145         oss_indev_extralibs="-lossaudio"
3146         oss_outdev_extralibs="-lossaudio"
3147         ;;
3148     openbsd|bitrig)
3149         disable symver
3150         SHFLAGS='-shared'
3151         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3152         SLIB_INSTALL_LINKS=
3153         oss_indev_extralibs="-lossaudio"
3154         oss_outdev_extralibs="-lossaudio"
3155         ;;
3156     dragonfly)
3157         disable symver
3158         ;;
3159     freebsd)
3160         ;;
3161     bsd/os)
3162         add_extralibs -lpoll -lgnugetopt
3163         ;;
3164     darwin)
3165         gas="gas-preprocessor.pl $cc"
3166         enabled ppc && add_asflags -force_cpusubtype_ALL
3167         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3168         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3169         add_ldflags -Wl,-dynamic,-search_paths_first
3170         SLIBSUF=".dylib"
3171         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3172         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3173         objformat="macho"
3174         enabled x86_64 && objformat="macho64"
3175         enabled_any pic shared ||
3176             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3177         ;;
3178     mingw32*)
3179         if test $target_os = "mingw32ce"; then
3180             disable network
3181         else
3182             target_os=mingw32
3183         fi
3184         LIBTARGET=i386
3185         if enabled x86_64; then
3186             LIBTARGET="i386:x86-64"
3187         elif enabled arm; then
3188             LIBTARGET=arm-wince
3189         fi
3190         check_ldflags -Wl,--nxcompat
3191         check_ldflags -Wl,--dynamicbase
3192         shlibdir_default="$bindir_default"
3193         SLIBPREF=""
3194         SLIBSUF=".dll"
3195         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3196         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3197         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3198         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3199         SLIB_INSTALL_LINKS=
3200         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3201         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3202         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3203         objformat="win32"
3204         dlltool="${cross_prefix}dlltool"
3205         ranlib=:
3206         enable dos_paths
3207         ;;
3208     win32|win64)
3209         if enabled shared; then
3210             # Link to the import library instead of the normal static library
3211             # for shared libs.
3212             LD_LIB='%.lib'
3213             # Cannot build both shared and static libs with MSVC or icl.
3214             disable static
3215         fi
3216         shlibdir_default="$bindir_default"
3217         SLIBPREF=""
3218         SLIBSUF=".dll"
3219         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3220         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3221         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3222         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3223         SLIB_INSTALL_LINKS=
3224         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3225         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3226         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3227         objformat="win32"
3228         ranlib=:
3229         enable dos_paths
3230         ;;
3231     cygwin*)
3232         target_os=cygwin
3233         shlibdir_default="$bindir_default"
3234         SLIBPREF="cyg"
3235         SLIBSUF=".dll"
3236         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3237         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3238         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3239         SLIB_INSTALL_LINKS=
3240         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3241         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3242         objformat="win32"
3243         enable dos_paths
3244         ;;
3245     *-dos|freedos|opendos)
3246         network_extralibs="-lsocket"
3247         objformat="coff"
3248         enable dos_paths
3249         add_cppflags -U__STRICT_ANSI__
3250         ;;
3251     linux)
3252         enable dv1394
3253         ;;
3254     irix*)
3255         target_os=irix
3256         ranlib="echo ignoring ranlib"
3257         ;;
3258     os/2*)
3259         ln_s="cp -f"
3260         objformat="aout"
3261         add_cppflags -D_GNU_SOURCE
3262         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3263         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3264         LIBSUF="_s.a"
3265         SLIBPREF=""
3266         SLIBSUF=".dll"
3267         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3268         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3269         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3270             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3271             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3272             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3273             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3274             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3275         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3276             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3277         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3278         enable dos_paths
3279         ;;
3280     gnu/kfreebsd)
3281         add_cppflags -D_BSD_SOURCE
3282         ;;
3283     gnu)
3284         ;;
3285     qnx)
3286         add_cppflags -D_QNX_SOURCE
3287         network_extralibs="-lsocket"
3288         ;;
3289     symbian)
3290         SLIBSUF=".dll"
3291         enable dos_paths
3292         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3293         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3294         add_ldflags -Wl,--target1-abs,--no-undefined \
3295                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3296                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3297         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3298                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3299                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3300         ;;
3301     osf1)
3302         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3303         ;;
3304     minix)
3305         ;;
3306     plan9)
3307         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3308                      -D_REENTRANT_SOURCE        \
3309                      -D_RESEARCH_SOURCE         \
3310                      -DFD_SETSIZE=96            \
3311                      -DHAVE_SOCK_OPTS
3312         add_compat strtod.o strtod=avpriv_strtod
3313         network_extralibs='-lbsd'
3314         exeobjs=compat/plan9/main.o
3315         disable avserver
3316         cp_f='cp'
3317         ;;
3318     none)
3319         ;;
3320     *)
3321         die "Unknown OS '$target_os'."
3322         ;;
3323 esac
3324
3325 # determine libc flavour
3326
3327 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3328 if check_cpp_condition features.h "defined __UCLIBC__"; then
3329     libc_type=uclibc
3330     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3331 elif check_cpp_condition features.h "defined __GLIBC__"; then
3332     libc_type=glibc
3333     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3334 # MinGW headers can be installed on Cygwin, so check for newlib first.
3335 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3336     libc_type=newlib
3337     add_cppflags -U__STRICT_ANSI__
3338 elif check_header _mingw.h; then
3339     libc_type=mingw
3340     check_cpp_condition _mingw.h \
3341         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3342             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3343         die "ERROR: MinGW runtime version must be >= 3.15."
3344     add_cppflags -U__STRICT_ANSI__
3345 elif check_func_headers stdlib.h _get_doserrno; then
3346     libc_type=msvcrt
3347     add_compat strtod.o strtod=avpriv_strtod
3348     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3349                                  _snprintf=avpriv_snprintf  \
3350                                  vsnprintf=avpriv_vsnprintf
3351     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3352     # 0x601 by default unless something else is set by the user.
3353     # This can easily lead to us detecting functions only present
3354     # in such new versions and producing binaries requiring windows 7.0.
3355     # Therefore explicitly set the default to XP unless the user has
3356     # set something else on the command line.
3357     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3358 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3359     libc_type=klibc
3360 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3361     libc_type=bionic
3362     add_compat strtod.o strtod=avpriv_strtod
3363 fi
3364
3365 test -n "$libc_type" && enable $libc_type
3366
3367 # hacks for compiler/libc/os combinations
3368
3369 if enabled_all tms470 glibc; then
3370     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3371     add_cppflags -D__USER_LABEL_PREFIX__=
3372     add_cppflags -D__builtin_memset=memset
3373     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3374     add_cflags   -pds=48    # incompatible redefinition of macro
3375 fi
3376
3377 if enabled_all ccc glibc; then
3378     add_ldflags -Wl,-z,now  # calls to libots crash without this
3379 fi
3380
3381 esc(){
3382     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3383 }
3384
3385 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3386
3387 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3388
3389 set_default $PATHS_LIST
3390 set_default nm
3391
3392 # we need to build at least one lib type
3393 if ! enabled_any static shared; then
3394     cat <<EOF
3395 At least one library type must be built.
3396 Specify --enable-static to build the static libraries or --enable-shared to
3397 build the shared libraries as well. To only build the shared libraries specify
3398 --disable-static in addition to --enable-shared.
3399 EOF
3400     exit 1;
3401 fi
3402
3403 die_license_disabled() {
3404     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3405 }
3406
3407 die_license_disabled gpl libcdio
3408 die_license_disabled gpl libx264
3409 die_license_disabled gpl libxavs
3410 die_license_disabled gpl libxvid
3411 die_license_disabled gpl x11grab
3412
3413 die_license_disabled nonfree libfaac
3414 die_license_disabled nonfree libfdk_aac
3415 die_license_disabled nonfree openssl
3416
3417 die_license_disabled version3 libopencore_amrnb
3418 die_license_disabled version3 libopencore_amrwb
3419 die_license_disabled version3 libvo_aacenc
3420 die_license_disabled version3 libvo_amrwbenc
3421
3422 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3423
3424 disabled optimizations || check_cflags -fomit-frame-pointer
3425
3426 enable_weak_pic() {
3427     disabled pic && return
3428     enable pic
3429     add_cppflags -DPIC
3430     case "$target_os" in
3431     mingw*|cygwin*)
3432         ;;
3433     *)
3434         add_cflags -fPIC
3435         ;;
3436     esac
3437     add_asflags  -fPIC
3438 }
3439
3440 enabled pic && enable_weak_pic
3441
3442 check_cc <<EOF || die "Symbol mangling check failed."
3443 int ff_extern;
3444 EOF
3445 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3446 extern_prefix=${sym%%ff_extern*}
3447
3448 check_cc <<EOF && enable_weak inline_asm
3449 void foo(void) { __asm__ volatile ("" ::); }
3450 EOF
3451
3452 _restrict=
3453 for restrict_keyword in restrict __restrict__ __restrict; do
3454     check_cc <<EOF && _restrict=$restrict_keyword && break
3455 void foo(char * $restrict_keyword p);
3456 EOF
3457 done
3458
3459 check_cc <<EOF && enable pragma_deprecated
3460 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3461 EOF
3462
3463 check_cc <<EOF && enable attribute_packed
3464 struct { int x; } __attribute__((packed)) x;
3465 EOF
3466
3467 check_cc <<EOF && enable attribute_may_alias
3468 union { int x; } __attribute__((may_alias)) x;
3469 EOF
3470
3471 check_cc <<EOF || die "endian test failed"
3472 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3473 EOF
3474 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3475
3476 check_inline_asm inline_asm_labels '"1:\n"'
3477
3478 if enabled alpha; then
3479
3480     check_cflags -mieee
3481
3482 elif enabled arm; then
3483
3484     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3485     enabled thumb && check_cflags -mthumb || check_cflags -marm
3486     nogas=die
3487
3488     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3489         enable vfp_args
3490     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3491         case "${cross_prefix:-$cc}" in
3492             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3493             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3494 __asm__ (".eabi_attribute 28, 1");
3495 int main(void) { return 0; }
3496 EOF
3497         esac
3498         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3499     fi
3500
3501     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3502     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3503     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3504     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3505     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3506     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3507
3508     [ $target_os = linux ] ||
3509         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3510             $ARCH_EXT_LIST_ARM
3511
3512     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3513     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3514
3515     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3516
3517 elif enabled mips; then
3518
3519     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3520
3521 elif enabled parisc; then
3522
3523     if enabled gcc; then
3524         case $($cc -dumpversion) in
3525             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3526         esac
3527     fi
3528
3529 elif enabled ppc; then
3530
3531     enable local_aligned_8 local_aligned_16
3532
3533     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3534     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3535     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3536     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3537
3538     # AltiVec flags: The FSF version of GCC differs from the Apple version
3539     if enabled altivec; then
3540         nogas=warn
3541         check_cflags -maltivec -mabi=altivec &&
3542         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3543         check_cflags -faltivec
3544
3545         # check if our compiler supports Motorola AltiVec C API
3546         check_cc <<EOF || disable altivec
3547 $inc_altivec_h
3548 int main(void) {
3549     vector signed int v1 = (vector signed int) { 0 };
3550     vector signed int v2 = (vector signed int) { 1 };
3551     v1 = vec_add(v1, v2);
3552     return 0;
3553 }
3554 EOF
3555
3556         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3557     fi
3558
3559 elif enabled sparc; then
3560
3561     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3562
3563 elif enabled x86; then
3564
3565     check_builtin rdtsc    intrin.h   "__rdtsc()"
3566     check_builtin mm_empty mmintrin.h "_mm_empty()"
3567
3568     enable local_aligned_8 local_aligned_16
3569
3570     # check whether EBP is available on x86
3571     # As 'i' is stored on the stack, this program will crash
3572     # if the base pointer is used to access it because the
3573     # base pointer is cleared in the inline assembly code.
3574     check_exec_crash <<EOF && enable ebp_available
3575 volatile int i=0;
3576 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3577 return i;
3578 EOF
3579
3580     # check whether EBX is available on x86
3581     check_inline_asm ebx_available '""::"b"(0)' &&
3582         check_inline_asm ebx_available '"":::"%ebx"'
3583
3584     # check whether xmm clobbers are supported
3585     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3586
3587     # check whether binutils is new enough to compile SSSE3/MMXEXT
3588     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3589     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3590
3591     if ! disabled_any asm mmx yasm; then
3592         if check_cmd $yasmexe --version; then
3593             enabled x86_64 && yasm_extra="-m amd64"
3594             yasm_debug="-g dwarf2"
3595         elif check_cmd nasm -v; then
3596             yasmexe=nasm
3597             yasm_debug="-g -F dwarf"
3598             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3599         fi
3600
3601         YASMFLAGS="-f $objformat $yasm_extra"
3602         enabled pic               && append YASMFLAGS "-DPIC"
3603         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3604         case "$objformat" in
3605             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3606         esac
3607
3608         check_yasm "movbe ecx, [5]" && enable yasm ||
3609             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3610         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3611         check_yasm "CPU amdnop" && enable cpunop
3612     fi
3613
3614     case "$cpu" in
3615         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3616             disable fast_clz
3617         ;;
3618     esac
3619
3620 fi
3621
3622 if enabled asm; then
3623     as=${gas:=$as}
3624     check_as <<EOF && enable gnu_as || \
3625         $nogas "GNU assembler not found, install gas-preprocessor"
3626 .macro m n
3627 \n: .int 0
3628 .endm
3629 m x
3630 EOF
3631 fi
3632
3633 check_ldflags -Wl,--as-needed
3634
3635 if check_func dlopen; then
3636     ldl=
3637 elif check_func dlopen -ldl; then
3638     ldl=-ldl
3639 fi
3640
3641 if ! disabled network; then
3642     check_type "sys/types.h sys/socket.h" socklen_t
3643     check_type netdb.h "struct addrinfo"
3644     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3645     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3646     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3647     check_type netinet/in.h "struct sockaddr_in6"
3648     check_type poll.h "struct pollfd"
3649     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3650     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3651     check_type netinet/sctp.h "struct sctp_event_subscribe"
3652     check_func getaddrinfo $network_extralibs
3653     check_func getservbyport $network_extralibs
3654     # Prefer arpa/inet.h over winsock2
3655     if check_header arpa/inet.h ; then
3656         check_func closesocket
3657     elif check_header winsock2.h ; then
3658         check_func_headers winsock2.h closesocket -lws2 &&
3659             network_extralibs="-lws2" ||
3660         { check_func_headers winsock2.h closesocket -lws2_32 &&
3661             network_extralibs="-lws2_32"; }
3662         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3663         check_type ws2tcpip.h socklen_t
3664         check_type ws2tcpip.h "struct addrinfo"
3665         check_type ws2tcpip.h "struct group_source_req"
3666         check_type ws2tcpip.h "struct ip_mreq_source"
3667         check_type ws2tcpip.h "struct ipv6_mreq"
3668         check_type winsock2.h "struct pollfd"
3669         check_type ws2tcpip.h "struct sockaddr_in6"
3670         check_type ws2tcpip.h "struct sockaddr_storage"
3671         check_struct winsock2.h "struct sockaddr" sa_len
3672     else
3673         disable network
3674     fi
3675 fi
3676
3677 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3678 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3679
3680 check_func  fcntl
3681 check_func  fork
3682 check_func_headers stdlib.h getenv
3683 check_func  gethrtime
3684 check_func  getopt
3685 check_func  getrusage
3686 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3687 check_func  gettimeofday
3688 check_func  inet_aton $network_extralibs
3689 check_func  isatty
3690 check_func  localtime_r
3691 check_func  ${malloc_prefix}memalign            && enable memalign
3692 check_func  mkstemp
3693 check_func  mmap
3694 check_func  mprotect
3695 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3696 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3697 check_func  setrlimit
3698 check_func  strerror_r
3699 check_func  strptime
3700 check_func  strtok_r
3701 check_func  sched_getaffinity
3702 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3703 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3704 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3705 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3706 check_func  sysconf
3707 check_func  sysctl
3708 check_func  usleep
3709 check_func_headers io.h setmode
3710 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3711 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3712 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3713 check_func_headers windows.h GetProcessAffinityMask
3714 check_func_headers windows.h GetProcessTimes
3715 check_func_headers windows.h GetSystemTimeAsFileTime
3716 check_func_headers windows.h MapViewOfFile
3717 check_func_headers windows.h SetConsoleTextAttribute
3718 check_func_headers windows.h Sleep
3719 check_func_headers windows.h VirtualAlloc
3720
3721 check_header direct.h
3722 check_header dlfcn.h
3723 check_header dxva.h
3724 check_header dxva2api.h
3725 check_header io.h
3726 check_header malloc.h
3727 check_header poll.h
3728 check_header sys/mman.h
3729 check_header sys/param.h
3730 check_header sys/resource.h
3731 check_header sys/select.h
3732 check_header sys/time.h
3733 check_header sys/un.h
3734 check_header unistd.h
3735 check_header vdpau/vdpau.h
3736 check_header vdpau/vdpau_x11.h
3737 check_header VideoDecodeAcceleration/VDADecoder.h
3738 check_header windows.h
3739 check_header X11/extensions/XvMClib.h
3740
3741 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3742 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3743
3744 if ! disabled w32threads && ! enabled pthreads; then
3745     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3746 fi
3747
3748 # check for some common methods of building with pthread support
3749 # do this before the optional library checks as some of them require pthreads
3750 if ! disabled pthreads && ! enabled w32threads; then
3751     enable pthreads
3752     if check_func pthread_create; then
3753         :
3754     elif check_func pthread_create -pthread; then
3755         add_cflags -pthread
3756         add_extralibs -pthread
3757     elif check_func pthread_create -pthreads; then
3758         add_cflags -pthreads
3759         add_extralibs -pthreads
3760     elif check_func pthread_create -lpthreadGC2; then
3761         add_extralibs -lpthreadGC2
3762     elif ! check_lib pthread.h pthread_create -lpthread; then
3763         disable pthreads
3764     fi
3765 fi
3766
3767 for thread in $THREADS_LIST; do
3768     if enabled $thread; then
3769         test -n "$thread_type" &&
3770             die "ERROR: Only one thread type must be selected." ||
3771             thread_type="$thread"
3772     fi
3773 done
3774
3775 enabled sync_val_compare_and_swap && enable atomics_gcc
3776 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
3777 enabled MemoryBarrier && enable atomics_win32
3778
3779 check_lib math.h sin -lm && LIBM="-lm"
3780 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3781
3782 atan2f_args=2
3783 ldexpf_args=2
3784 powf_args=2
3785
3786 for func in $MATH_FUNCS; do
3787     eval check_mathfunc $func \${${func}_args:-1}
3788 done
3789
3790 # these are off by default, so fail if requested and not available
3791 enabled avisynth          && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3792 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3793 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3794 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3795 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3796 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3797 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3798                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3799                                done || die "ERROR: libgsm not found"; }
3800 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3801 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3802 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3803 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3804 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3805 enabled libopenjpeg       && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3806 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3807 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3808 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3809 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3810 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3811 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3812 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3813 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3814 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3815 enabled libvpx            && {
3816     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3817                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3818     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3819                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3820     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3821     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3822 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3823 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3824                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3825                                die "ERROR: libx264 version must be >= 0.118."; }
3826 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3827 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3828 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3829                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3830                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3831                                die "ERROR: openssl not found"; }
3832
3833 if enabled gnutls; then
3834     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3835     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3836 fi
3837
3838 # libdc1394 check
3839 if enabled libdc1394; then
3840     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3841         enable libdc1394_2; } ||
3842     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3843         enable libdc1394_1; } ||
3844     die "ERROR: No version of libdc1394 found "
3845 fi
3846
3847 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3848     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3849     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3850     enable sdl
3851 fi
3852
3853 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3854
3855 check_header linux/fb.h
3856 check_header linux/videodev2.h
3857 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3858
3859 check_header sys/videoio.h
3860
3861 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3862 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3863 # w32api 3.12 had it defined wrong
3864 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3865
3866 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3867 { check_header dev/bktr/ioctl_meteor.h &&
3868   check_header dev/bktr/ioctl_bt848.h; } ||
3869 { check_header machine/ioctl_meteor.h &&
3870   check_header machine/ioctl_bt848.h; } ||
3871 { check_header dev/video/meteor/ioctl_meteor.h &&
3872   check_header dev/video/bktr/ioctl_bt848.h; } ||
3873 check_header dev/ic/bt8xx.h
3874
3875 check_header sndio.h
3876 check_header sys/soundcard.h
3877 check_header soundcard.h
3878
3879 enabled_any alsa_indev alsa_outdev &&
3880     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3881
3882 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
3883     check_func jack_port_get_latency_range -ljack
3884
3885 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3886
3887 if enabled libcdio; then
3888     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
3889     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3890 fi
3891
3892 enabled x11grab                                           &&
3893 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3894 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3895 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3896
3897 enabled vdpau &&
3898     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3899     disable vdpau
3900
3901 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3902
3903 # add some useful compiler flags if supported
3904 check_cflags -Wdeclaration-after-statement
3905 check_cflags -Wall
3906 check_cflags -Wno-parentheses
3907 check_cflags -Wno-switch
3908 check_cflags -Wno-format-zero-length
3909 check_cflags -Wdisabled-optimization
3910 check_cflags -Wpointer-arith
3911 check_cflags -Wredundant-decls
3912 check_cflags -Wno-pointer-sign
3913 check_cflags -Wcast-qual
3914 check_cflags -Wwrite-strings
3915 check_cflags -Wtype-limits
3916 check_cflags -Wundef
3917 check_cflags -Wmissing-prototypes
3918 check_cflags -Wstrict-prototypes
3919 enabled extra_warnings && check_cflags -Winline
3920
3921 # add some linker flags
3922 check_ldflags -Wl,--warn-common
3923 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3924 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3925
3926 enabled xmm_clobber_test &&
3927     check_ldflags -Wl,--wrap,avcodec_open2              \
3928                   -Wl,--wrap,avcodec_decode_audio4      \
3929                   -Wl,--wrap,avcodec_decode_video2      \
3930                   -Wl,--wrap,avcodec_decode_subtitle2   \
3931                   -Wl,--wrap,avcodec_encode_audio2      \
3932                   -Wl,--wrap,avcodec_encode_video2      \
3933                   -Wl,--wrap,avcodec_encode_subtitle    \
3934                   -Wl,--wrap,sws_scale ||
3935     disable xmm_clobber_test
3936
3937 echo "X{};" > $TMPV
3938 if test_ldflags -Wl,--version-script,$TMPV; then
3939     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3940     check_cc <<EOF && enable symver_asm_label
3941 void ff_foo(void) __asm__ ("av_foo@VERSION");
3942 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3943 EOF
3944     check_cc <<EOF && enable symver_gnu_asm
3945 __asm__(".symver ff_foo,av_foo@VERSION");
3946 void ff_foo(void) {}
3947 EOF
3948 fi
3949
3950 if [ -z "$optflags" ]; then
3951     if enabled small; then
3952         optflags=$cflags_size
3953     elif enabled optimizations; then
3954         optflags=$cflags_speed
3955     else
3956         optflags=$cflags_noopt
3957     fi
3958 fi
3959
3960 check_optflags(){
3961     check_cflags "$@"
3962     enabled lto && check_ldflags "$@"
3963 }
3964
3965
3966 if enabled lto; then
3967     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
3968     check_cflags  -flto
3969     check_ldflags -flto $cpuflags
3970 fi
3971
3972 check_optflags $optflags
3973 check_optflags -fno-math-errno
3974 check_optflags -fno-signed-zeros
3975
3976 if enabled icc; then
3977     # Just warnings, no remarks
3978     check_cflags -w1
3979     # -wd: Disable following warnings
3980     # 144, 167, 556: -Wno-pointer-sign
3981     # 1292: attribute "foo" ignored
3982     # 1419: external declaration in primary source file
3983     # 10006: ignoring unknown option -fno-signed-zeros
3984     # 10148: ignoring unknown option -Wno-parentheses
3985     # 10156: ignoring option '-W'; no argument required
3986     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
3987     # 11030: Warning unknown option --as-needed
3988     # 10156: ignoring option '-export'; no argument required
3989     check_ldflags -wd10156,11030
3990     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3991     enable ebp_available
3992     if enabled x86_32; then
3993         icc_version=$($cc -dumpversion)
3994         test ${icc_version%%.*} -ge 11 &&
3995             check_cflags -falign-stack=maintain-16-byte ||
3996             disable aligned_stack
3997     fi
3998 elif enabled ccc; then
3999     # disable some annoying warnings
4000     add_cflags -msg_disable bitnotint
4001     add_cflags -msg_disable mixfuncvoid
4002     add_cflags -msg_disable nonstandcast
4003     add_cflags -msg_disable unsupieee
4004 elif enabled gcc; then
4005     check_optflags -fno-tree-vectorize
4006     check_cflags -Werror=implicit-function-declaration
4007     check_cflags -Werror=missing-prototypes
4008     check_cflags -Werror=return-type
4009     check_cflags -Werror=declaration-after-statement
4010     check_cflags -Werror=vla
4011     enabled extra_warnings || check_cflags -Wno-maybe-uninitialized
4012 elif enabled llvm_gcc; then
4013     check_cflags -mllvm -stack-alignment=16
4014 elif enabled clang; then
4015     check_cflags -mllvm -stack-alignment=16
4016     check_cflags -Qunused-arguments
4017     check_cflags -Werror=implicit-function-declaration
4018     check_cflags -Werror=missing-prototypes
4019     check_cflags -Werror=return-type
4020 elif enabled cparser; then
4021     add_cflags -Wno-missing-variable-declarations
4022     add_cflags -Wno-empty-statement
4023 elif enabled armcc; then
4024     # 2523: use of inline assembler is deprecated
4025     add_cflags -W${armcc_opt},--diag_suppress=2523
4026     add_cflags -W${armcc_opt},--diag_suppress=1207
4027     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4028     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4029     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4030     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4031 elif enabled tms470; then
4032     add_cflags -pds=824 -pds=837
4033 elif enabled pathscale; then
4034     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4035 elif enabled_any msvc icl; then
4036     enabled x86_32 && disable aligned_stack
4037     enabled_all x86_32 debug && add_cflags -Oy-
4038     enabled debug && add_ldflags -debug
4039     enable pragma_deprecated
4040     if enabled icl; then
4041         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4042         # (correctly) on icl 13.x.
4043         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4044             add_cflags -Qansi-alias
4045         # icl will pass the inline asm tests but inline asm is currently
4046         # not supported (build will fail)
4047         disable inline_asm
4048     fi
4049 fi
4050
4051 case $target_os in
4052     osf1)
4053         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4054     ;;
4055     plan9)
4056         add_cppflags -Dmain=plan9_main
4057     ;;
4058 esac
4059
4060 enabled_any $THREADS_LIST      && enable threads
4061 enabled_any $ATOMICS_LIST      && enable atomics_native
4062
4063 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4064
4065 check_deps $CONFIG_LIST       \
4066            $CONFIG_EXTRA      \
4067            $HAVE_LIST         \
4068            $ALL_COMPONENTS    \
4069
4070 ! enabled_any memalign posix_memalign aligned_malloc &&
4071     enabled_any $need_memalign && enable memalign_hack
4072
4073 echo "install prefix            $prefix"
4074 echo "source path               $source_path"
4075 echo "C compiler                $cc"
4076 echo "ARCH                      $arch ($cpu)"
4077 if test "$build_suffix" != ""; then
4078     echo "build suffix              $build_suffix"
4079 fi
4080 if test "$extra_version" != ""; then
4081     echo "version string suffix     $extra_version"
4082 fi
4083 echo "big-endian                ${bigendian-no}"
4084 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4085 if enabled x86; then
4086     echo "${yasmexe}                      ${yasm-no}"
4087     echo "MMX enabled               ${mmx-no}"
4088     echo "MMXEXT enabled            ${mmxext-no}"
4089     echo "3DNow! enabled            ${amd3dnow-no}"
4090     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4091     echo "SSE enabled               ${sse-no}"
4092     echo "SSSE3 enabled             ${ssse3-no}"
4093     echo "AVX enabled               ${avx-no}"
4094     echo "FMA4 enabled              ${fma4-no}"
4095     echo "i686 features enabled     ${i686-no}"
4096     echo "CMOV is fast              ${fast_cmov-no}"
4097     echo "EBX available             ${ebx_available-no}"
4098     echo "EBP available             ${ebp_available-no}"
4099 fi
4100 if enabled arm; then
4101     echo "ARMv5TE enabled           ${armv5te-no}"
4102     echo "ARMv6 enabled             ${armv6-no}"
4103     echo "ARMv6T2 enabled           ${armv6t2-no}"
4104     echo "VFP enabled               ${vfp-no}"
4105     echo "NEON enabled              ${neon-no}"
4106 fi
4107 if enabled ppc; then
4108     echo "AltiVec enabled           ${altivec-no}"
4109     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4110     echo "dcbzl available           ${dcbzl-no}"
4111 fi
4112 if enabled sparc; then
4113     echo "VIS enabled               ${vis-no}"
4114 fi
4115 echo "debug symbols             ${debug-no}"
4116 echo "optimize for size         ${small-no}"
4117 echo "optimizations             ${optimizations-no}"
4118 echo "static                    ${static-no}"
4119 echo "shared                    ${shared-no}"
4120 echo "new filter support        ${avfilter-no}"
4121 echo "network support           ${network-no}"
4122 echo "threading support         ${thread_type-no}"
4123 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4124 echo "SDL support               ${sdl-no}"
4125 test -n "$random_seed" &&
4126     echo "random seed               ${random_seed}"
4127 echo
4128
4129 echo "External libraries:"
4130 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4131 echo
4132
4133 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4134     echo "Enabled ${type}s:"
4135     eval list=\$$(toupper $type)_LIST
4136     print_enabled '_*' $list | print_3_columns
4137     echo
4138 done
4139
4140 license="LGPL version 2.1 or later"
4141 if enabled nonfree; then
4142     license="nonfree and unredistributable"
4143 elif enabled gplv3; then
4144     license="GPL version 3 or later"
4145 elif enabled lgplv3; then
4146     license="LGPL version 3 or later"
4147 elif enabled gpl; then
4148     license="GPL version 2 or later"
4149 fi
4150
4151 echo "License: $license"
4152
4153 echo "Creating config.mak and config.h..."
4154
4155 test -e Makefile || $ln_s "$source_path/Makefile" .
4156
4157 config_files="$TMPH config.mak"
4158
4159 cat > config.mak <<EOF
4160 # Automatically generated by configure - do not modify!
4161 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4162 prefix=$prefix
4163 LIBDIR=\$(DESTDIR)$libdir
4164 SHLIBDIR=\$(DESTDIR)$shlibdir
4165 INCDIR=\$(DESTDIR)$incdir
4166 BINDIR=\$(DESTDIR)$bindir
4167 DATADIR=\$(DESTDIR)$datadir
4168 DOCDIR=\$(DESTDIR)$docdir
4169 MANDIR=\$(DESTDIR)$mandir
4170 SRC_PATH=$source_path
4171 CC_IDENT=$cc_ident
4172 ARCH=$arch
4173 CC=$cc
4174 AS=$as
4175 LD=$ld
4176 DEPCC=$dep_cc
4177 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4178 DEPAS=$as
4179 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4180 YASM=$yasmexe
4181 DEPYASM=$yasmexe
4182 AR=$ar
4183 ARFLAGS=$arflags
4184 AR_O=$ar_o
4185 RANLIB=$ranlib
4186 STRIP=$strip
4187 LN_S=$ln_s
4188 CPPFLAGS=$CPPFLAGS
4189 CFLAGS=$CFLAGS
4190 ASFLAGS=$ASFLAGS
4191 AS_C=$AS_C
4192 AS_O=$AS_O
4193 CC_C=$CC_C
4194 CC_E=$CC_E
4195 CC_O=$CC_O
4196 LD_O=$LD_O
4197 LD_LIB=$LD_LIB
4198 LD_PATH=$LD_PATH
4199 DLLTOOL=$dlltool
4200 LDFLAGS=$LDFLAGS
4201 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4202 YASMFLAGS=$YASMFLAGS
4203 BUILDSUF=$build_suffix
4204 FULLNAME=$FULLNAME
4205 LIBPREF=$LIBPREF
4206 LIBSUF=$LIBSUF
4207 LIBNAME=$LIBNAME
4208 SLIBPREF=$SLIBPREF
4209 SLIBSUF=$SLIBSUF
4210 EXESUF=$EXESUF
4211 EXTRA_VERSION=$extra_version
4212 CCDEP=$CCDEP
4213 CCDEP_FLAGS=$CCDEP_FLAGS
4214 ASDEP=$ASDEP
4215 ASDEP_FLAGS=$ASDEP_FLAGS
4216 CC_DEPFLAGS=$CC_DEPFLAGS
4217 AS_DEPFLAGS=$AS_DEPFLAGS
4218 HOSTCC=$host_cc
4219 HOSTLD=$host_ld
4220 HOSTCFLAGS=$host_cflags
4221 HOSTCPPFLAGS=$host_cppflags
4222 HOSTEXESUF=$HOSTEXESUF
4223 HOSTLDFLAGS=$host_ldflags
4224 HOSTLIBS=$host_libs
4225 DEPHOSTCC=$host_cc
4226 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4227 HOSTCCDEP=$HOSTCCDEP
4228 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4229 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4230 HOSTCC_C=$HOSTCC_C
4231 HOSTCC_O=$HOSTCC_O
4232 HOSTLD_O=$HOSTLD_O
4233 TARGET_EXEC=$target_exec $target_exec_args
4234 TARGET_PATH=$target_path
4235 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4236 LIBS-avplay=$sdl_libs
4237 CFLAGS-avplay=$sdl_cflags
4238 ZLIB=$($ldflags_filter -lz)
4239 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4240 EXTRALIBS=$extralibs
4241 COMPAT_OBJS=$compat_objs
4242 EXEOBJS=$exeobjs
4243 INSTALL=install
4244 LIBTARGET=${LIBTARGET}
4245 SLIBNAME=${SLIBNAME}
4246 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4247 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4248 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4249 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4250 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4251 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4252 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4253 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4254 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4255 EOF
4256
4257 get_version(){
4258     lcname=lib${1}
4259     name=$(toupper $lcname)
4260     file=$source_path/$lcname/version.h
4261     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4262     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4263     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4264     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4265     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4266 }
4267
4268 map 'get_version $v' $LIBRARY_LIST
4269
4270 cat > $TMPH <<EOF
4271 /* Automatically generated by configure - do not modify! */
4272 #ifndef LIBAV_CONFIG_H
4273 #define LIBAV_CONFIG_H
4274 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4275 #define LIBAV_LICENSE "$(c_escape $license)"
4276 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4277 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4278 #define restrict $_restrict
4279 #define EXTERN_PREFIX "${extern_prefix}"
4280 #define EXTERN_ASM ${extern_prefix}
4281 #define SLIBSUF "$SLIBSUF"
4282 EOF
4283
4284 test -n "$malloc_prefix" &&
4285     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4286
4287 if enabled yasm; then
4288     append config_files $TMPASM
4289     printf '' >$TMPASM
4290 fi
4291
4292 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4293
4294 print_config ARCH_   "$config_files" $ARCH_LIST
4295 print_config HAVE_   "$config_files" $HAVE_LIST
4296 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4297                                      $CONFIG_EXTRA      \
4298                                      $ALL_COMPONENTS    \
4299
4300 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4301
4302 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4303 cp_if_changed $TMPH config.h
4304 touch .config
4305
4306 enabled yasm && cp_if_changed $TMPASM config.asm
4307
4308 cat > $TMPH <<EOF
4309 /* Generated by ffconf */
4310 #ifndef AVUTIL_AVCONFIG_H
4311 #define AVUTIL_AVCONFIG_H
4312 EOF
4313
4314 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4315
4316 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4317
4318 cp_if_changed $TMPH libavutil/avconfig.h
4319
4320 test -n "$WARNINGS" && printf "\n$WARNINGS"
4321
4322 # build pkg-config files
4323
4324 pkgconfig_generate(){
4325     name=$1
4326     shortname=${name#lib}${build_suffix}
4327     comment=$2
4328     version=$3
4329     libs=$4
4330     requires=$5
4331     enabled ${name#lib} || return 0
4332     mkdir -p $name
4333     cat <<EOF > $name/$name.pc
4334 prefix=$prefix
4335 exec_prefix=\${prefix}
4336 libdir=$libdir
4337 includedir=$incdir
4338
4339 Name: $name
4340 Description: $comment
4341 Version: $version
4342 Requires: $(enabled shared || echo $requires)
4343 Requires.private: $(enabled shared && echo $requires)
4344 Conflicts:
4345 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4346 Libs.private: $(enabled shared && echo $libs)
4347 Cflags: -I\${includedir}
4348 EOF
4349     cat <<EOF > $name/$name-uninstalled.pc
4350 prefix=
4351 exec_prefix=
4352 libdir=\${pcfiledir}
4353 includedir=${source_path}
4354
4355 Name: $name
4356 Description: $comment
4357 Version: $version
4358 Requires: $requires
4359 Conflicts:
4360 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4361 Cflags: -I\${includedir}
4362 EOF
4363 }
4364
4365 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4366 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4367 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4368 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4369
4370 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4371 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4372 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4373 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4374 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4375 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4376 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"