configure: Move -Wno-maybe-uninitialized check into gcc section
[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 hds_muxer_select="flv_muxer"
1829 hls_muxer_select="mpegts_muxer"
1830 ipod_muxer_select="mov_muxer"
1831 ismv_muxer_select="mov_muxer"
1832 matroska_audio_muxer_select="matroska_muxer"
1833 matroska_demuxer_select="riffdec"
1834 matroska_demuxer_suggest="bzlib lzo zlib"
1835 matroska_muxer_select="riffenc"
1836 mmf_muxer_select="riffenc"
1837 mov_demuxer_select="riffdec"
1838 mov_demuxer_suggest="zlib"
1839 mov_muxer_select="riffenc rtpenc_chain"
1840 mp3_demuxer_select="mpegaudio_parser"
1841 mp4_muxer_select="mov_muxer"
1842 mpegts_muxer_select="adts_muxer latm_muxer"
1843 mpegtsraw_demuxer_select="mpegts_demuxer"
1844 mxf_d10_muxer_select="mxf_muxer"
1845 nut_muxer_select="riffenc"
1846 nuv_demuxer_select="riffdec"
1847 ogg_demuxer_select="golomb"
1848 psp_muxer_select="mov_muxer"
1849 rtp_demuxer_select="sdp_demuxer"
1850 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1851 rtsp_demuxer_select="http_protocol rtpdec"
1852 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1853 sap_demuxer_select="sdp_demuxer"
1854 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1855 sdp_demuxer_select="rtpdec"
1856 smoothstreaming_muxer_select="ismv_muxer"
1857 spdif_muxer_select="aac_parser"
1858 tak_demuxer_select="tak_parser"
1859 tg2_muxer_select="mov_muxer"
1860 tgp_muxer_select="mov_muxer"
1861 w64_demuxer_select="wav_demuxer"
1862 wav_demuxer_select="riffdec"
1863 wav_muxer_select="riffenc"
1864 webm_muxer_select="riffenc"
1865 wtv_demuxer_select="riffdec"
1866 xmv_demuxer_select="riffdec"
1867 xwma_demuxer_select="riffdec"
1868
1869 # indevs / outdevs
1870 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1871 alsa_outdev_deps="alsa_asoundlib_h"
1872 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1873 dv1394_indev_deps="dv1394"
1874 dv1394_indev_select="dv_demuxer"
1875 fbdev_indev_deps="linux_fb_h"
1876 jack_indev_deps="jack_jack_h pthreads"
1877 libcdio_indev_deps="libcdio"
1878 libdc1394_indev_deps="libdc1394"
1879 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1880 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1881 pulse_indev_deps="libpulse"
1882 sndio_indev_deps="sndio_h"
1883 sndio_outdev_deps="sndio_h"
1884 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1885 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1886 vfwcap_indev_extralibs="-lavicap32"
1887 x11grab_indev_deps="x11grab XShmCreateImage"
1888
1889 # protocols
1890 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1891 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1892 ffrtmpcrypt_protocol_select="tcp_protocol"
1893 ffrtmphttp_protocol_deps="!librtmp_protocol"
1894 ffrtmphttp_protocol_select="http_protocol"
1895 gopher_protocol_select="network"
1896 httpproxy_protocol_select="tcp_protocol"
1897 http_protocol_select="tcp_protocol"
1898 https_protocol_select="tls_protocol"
1899 librtmp_protocol_deps="librtmp"
1900 librtmpe_protocol_deps="librtmp"
1901 librtmps_protocol_deps="librtmp"
1902 librtmpt_protocol_deps="librtmp"
1903 librtmpte_protocol_deps="librtmp"
1904 mmsh_protocol_select="http_protocol"
1905 mmst_protocol_select="network"
1906 rtmp_protocol_deps="!librtmp_protocol"
1907 rtmp_protocol_select="tcp_protocol"
1908 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1909 rtmps_protocol_deps="!librtmp_protocol"
1910 rtmps_protocol_select="tls_protocol"
1911 rtmpt_protocol_select="ffrtmphttp_protocol"
1912 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1913 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1914 rtp_protocol_select="udp_protocol"
1915 sctp_protocol_deps="struct_sctp_event_subscribe"
1916 sctp_protocol_select="network"
1917 srtp_protocol_select="rtp_protocol"
1918 tcp_protocol_select="network"
1919 tls_protocol_deps_any="openssl gnutls"
1920 tls_protocol_select="tcp_protocol"
1921 udp_protocol_select="network"
1922 unix_protocol_deps="sys_un_h"
1923 unix_protocol_select="network"
1924
1925 # filters
1926 blackframe_filter_deps="gpl"
1927 boxblur_filter_deps="gpl"
1928 cropdetect_filter_deps="gpl"
1929 delogo_filter_deps="gpl"
1930 drawtext_filter_deps="libfreetype"
1931 frei0r_filter_deps="frei0r dlopen strtok_r"
1932 frei0r_filter_extralibs='$ldl'
1933 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1934 frei0r_src_filter_extralibs='$ldl'
1935 hqdn3d_filter_deps="gpl"
1936 interlace_filter_deps="gpl"
1937 resample_filter_deps="avresample"
1938 ocv_filter_deps="libopencv"
1939 scale_filter_deps="swscale"
1940 yadif_filter_deps="gpl"
1941
1942 # libraries
1943 avcodec_deps="avutil"
1944 avdevice_deps="avutil avcodec avformat"
1945 avfilter_deps="avutil"
1946 avformat_deps="avutil avcodec"
1947 avresample_deps="avutil"
1948 swscale_deps="avutil"
1949
1950 # programs
1951 avconv_deps="avcodec avfilter avformat avresample swscale"
1952 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
1953                fps_filter null_filter resample_filter scale_filter
1954                setpts_filter trim_filter"
1955 avplay_deps="avcodec avformat avresample swscale sdl"
1956 avplay_select="rdft"
1957 avprobe_deps="avcodec avformat"
1958 avserver_deps="avformat fork !shared"
1959 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
1960 avserver_extralibs='$ldl'
1961
1962 doc_deps="texi2html"
1963
1964 # default parameters
1965
1966 logfile="config.log"
1967
1968 # installation paths
1969 prefix_default="/usr/local"
1970 bindir_default='${prefix}/bin'
1971 datadir_default='${prefix}/share/avconv'
1972 docdir_default='${prefix}/share/doc/libav'
1973 incdir_default='${prefix}/include'
1974 libdir_default='${prefix}/lib'
1975 mandir_default='${prefix}/share/man'
1976 shlibdir_default="$libdir_default"
1977
1978 # toolchain
1979 ar_default="ar"
1980 cc_default="gcc"
1981 host_cc_default="gcc"
1982 cp_f="cp -f"
1983 ln_s="ln -s -f"
1984 nm_default="nm -g"
1985 objformat="elf"
1986 pkg_config_default=pkg-config
1987 ranlib="ranlib"
1988 strip="strip"
1989 yasmexe="yasm"
1990
1991 nogas=":"
1992
1993 # machine
1994 arch_default=$(uname -m)
1995 cpu="generic"
1996
1997 # OS
1998 target_os_default=$(tolower $(uname -s))
1999 host_os=$target_os_default
2000
2001 # configurable options
2002 enable $LIBRARY_LIST $PROGRAM_LIST
2003
2004 enable asm
2005 enable debug
2006 enable doc
2007 enable optimizations
2008 enable safe_bitstream_reader
2009 enable static
2010 enable swscale_alpha
2011
2012 # By default, enable only those hwaccels that have no external dependencies.
2013 enable dxva2 vdpau
2014
2015 # build settings
2016 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2017 LIBPREF="lib"
2018 LIBSUF=".a"
2019 FULLNAME='$(NAME)$(BUILDSUF)'
2020 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2021 SLIBPREF="lib"
2022 SLIBSUF=".so"
2023 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2024 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2025 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2026 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2027 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2028 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2029
2030 asflags_filter=echo
2031 cflags_filter=echo
2032 ldflags_filter=echo
2033
2034 AS_C='-c'
2035 AS_O='-o $@'
2036 CC_C='-c'
2037 CC_E='-E -o $@'
2038 CC_O='-o $@'
2039 LD_O='-o $@'
2040 LD_LIB='-l%'
2041 LD_PATH='-L'
2042 HOSTCC_C='-c'
2043 HOSTCC_O='-o $@'
2044 HOSTLD_O='-o $@'
2045
2046 host_cflags='-O3 -g'
2047 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2048 host_libs='-lm'
2049 host_cflags_filter=echo
2050 host_ldflags_filter=echo
2051
2052 target_path='$(CURDIR)'
2053
2054 # since the object filename is not given with the -MM flag, the compiler
2055 # is only able to print the basename, and we must add the path ourselves
2056 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2057 DEPFLAGS='-MM'
2058
2059 # find source path
2060 if test -f configure; then
2061     source_path=.
2062 else
2063     source_path=$(cd $(dirname "$0"); pwd)
2064     echo "$source_path" | grep -q '[[:blank:]]' &&
2065         die "Out of tree builds are impossible with whitespace in source path."
2066     test -e "$source_path/config.h" &&
2067         die "Out of tree builds are impossible with config.h in source dir."
2068 fi
2069
2070 for v in "$@"; do
2071     r=${v#*=}
2072     l=${v%"$r"}
2073     r=$(sh_quote "$r")
2074     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2075 done
2076
2077 find_things(){
2078     thing=$1
2079     pattern=$2
2080     file=$source_path/$3
2081     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2082 }
2083
2084 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2085 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2086 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2087 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2088 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2089 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2090 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2091 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2092 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2093 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2094 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2095
2096 ALL_COMPONENTS="
2097     $BSF_LIST
2098     $DECODER_LIST
2099     $DEMUXER_LIST
2100     $ENCODER_LIST
2101     $FILTER_LIST
2102     $HWACCEL_LIST
2103     $INDEV_LIST
2104     $MUXER_LIST
2105     $OUTDEV_LIST
2106     $PARSER_LIST
2107     $PROTOCOL_LIST
2108 "
2109
2110 for n in $COMPONENT_LIST; do
2111     v=$(toupper ${n%s})_LIST
2112     eval enable \$$v
2113     eval ${n}_if_any="\$$v"
2114 done
2115
2116 enable $ARCH_EXT_LIST
2117
2118 die_unknown(){
2119     echo "Unknown option \"$1\"."
2120     echo "See $0 --help for available options."
2121     exit 1
2122 }
2123
2124 print_3_columns() {
2125     cat | tr ' ' '\n' | sort | pr -r -3 -t
2126 }
2127
2128 show_list() {
2129     suffix=_$1
2130     shift
2131     echo $* | sed s/$suffix//g | print_3_columns
2132     exit 0
2133 }
2134
2135 rand_list(){
2136     IFS=', '
2137     set -- $*
2138     unset IFS
2139     for thing; do
2140         comp=${thing%:*}
2141         prob=${thing#$comp}
2142         prob=${prob#:}
2143         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2144         echo "prob ${prob:-0.5}"
2145         printf '%s\n' $comp
2146     done
2147 }
2148
2149 do_random(){
2150     action=$1
2151     shift
2152     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2153     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2154 }
2155
2156 for opt do
2157     optval="${opt#*=}"
2158     case "$opt" in
2159         --extra-ldflags=*)
2160             add_ldflags $optval
2161         ;;
2162         --extra-libs=*)
2163             add_extralibs $optval
2164         ;;
2165         --disable-devices)
2166             disable $INDEV_LIST $OUTDEV_LIST
2167         ;;
2168         --enable-debug=*)
2169             debuglevel="$optval"
2170         ;;
2171         --disable-programs)
2172             disable $PROGRAM_LIST
2173         ;;
2174         --disable-everything)
2175             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2176         ;;
2177         --disable-all)
2178             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2179             disable $LIBRARY_LIST $PROGRAM_LIST doc
2180         ;;
2181         --enable-random|--disable-random)
2182             action=${opt%%-random}
2183             do_random ${action#--} $COMPONENT_LIST
2184         ;;
2185         --enable-random=*|--disable-random=*)
2186             action=${opt%%-random=*}
2187             do_random ${action#--} $optval
2188         ;;
2189         --enable-*=*|--disable-*=*)
2190             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2191             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2192             eval list=\$$(toupper $thing)_LIST
2193             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2194             $action $(filter "$name" $list)
2195         ;;
2196         --enable-?*|--disable-?*)
2197             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2198             if is_in $option $COMPONENT_LIST; then
2199                 test $action = disable && action=unset
2200                 eval $action \$$(toupper ${option%s})_LIST
2201             elif is_in $option $CMDLINE_SELECT; then
2202                 $action $option
2203             else
2204                 die_unknown $opt
2205             fi
2206         ;;
2207         --list-*)
2208             NAME="${opt#--list-}"
2209             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2210             NAME=${NAME%s}
2211             eval show_list $NAME \$$(toupper $NAME)_LIST
2212         ;;
2213         --help|-h) show_help
2214         ;;
2215         *)
2216             optname="${opt%%=*}"
2217             optname="${optname#--}"
2218             optname=$(echo "$optname" | sed 's/-/_/g')
2219             if is_in $optname $CMDLINE_SET; then
2220                 eval $optname='$optval'
2221             elif is_in $optname $CMDLINE_APPEND; then
2222                 append $optname "$optval"
2223             else
2224                 die_unknown $opt
2225             fi
2226         ;;
2227     esac
2228 done
2229
2230 disabled logging && logfile=/dev/null
2231
2232 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2233 set >> $logfile
2234
2235 test -n "$cross_prefix" && enable cross_compile
2236
2237 if enabled cross_compile; then
2238     test -n "$arch" && test -n "$target_os" ||
2239         die "Must specify target arch and OS when cross-compiling"
2240 fi
2241
2242 ar_default="${cross_prefix}${ar_default}"
2243 cc_default="${cross_prefix}${cc_default}"
2244 nm_default="${cross_prefix}${nm_default}"
2245 pkg_config_default="${cross_prefix}${pkg_config_default}"
2246 ranlib="${cross_prefix}${ranlib}"
2247 strip="${cross_prefix}${strip}"
2248
2249 sysinclude_default="${sysroot}/usr/include"
2250
2251 case "$toolchain" in
2252     clang-asan)
2253         cc_default="clang"
2254         add_cflags  -fsanitize=address
2255         add_ldflags -fsanitize=address
2256     ;;
2257     clang-tsan)
2258         cc_default="clang"
2259         add_cflags  -fsanitize=thread -pie
2260         add_ldflags -fsanitize=thread -pie
2261     ;;
2262     gcc-asan)
2263         cc_default="gcc"
2264         add_cflags  -fsanitize=address
2265         add_ldflags -fsanitize=address
2266     ;;
2267     gcc-tsan)
2268         cc_default="gcc"
2269         add_cflags  -fsanitize=thread -pie -fPIC
2270         add_ldflags -fsanitize=thread -pie -fPIC
2271     ;;
2272     valgrind-massif)
2273         target_exec_default="valgrind"
2274         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2275     ;;
2276     valgrind-memcheck)
2277         target_exec_default="valgrind"
2278         target_exec_args="--track-origins=yes --leak-check=full"
2279     ;;
2280     msvc)
2281         cc_default="c99wrap cl"
2282         ld_default="c99wrap link"
2283         nm_default="dumpbin -symbols"
2284         ar_default="lib"
2285         target_os_default="win32"
2286     ;;
2287     icl)
2288         cc_default="c99wrap -noconv icl"
2289         ld_default="c99wrap xilink"
2290         nm_default="dumpbin -symbols"
2291         ar_default="xilib"
2292         target_os_default="win32"
2293     ;;
2294     gcov)
2295         add_cflags  -fprofile-arcs -ftest-coverage
2296         add_ldflags -fprofile-arcs -ftest-coverage
2297     ;;
2298     hardened)
2299         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2300         add_ldflags -Wl,-z,relro -Wl,-z,now
2301     ;;
2302     ?*)
2303         die "Unknown toolchain $toolchain"
2304     ;;
2305 esac
2306
2307 set_default arch cc pkg_config sysinclude target_exec target_os
2308 enabled cross_compile || host_cc_default=$cc
2309 set_default host_cc
2310
2311 if ! $pkg_config --version >/dev/null 2>&1; then
2312     warn "$pkg_config not found, library detection may fail."
2313     pkg_config=false
2314 fi
2315
2316 exesuf() {
2317     case $1 in
2318         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2319     esac
2320 }
2321
2322 EXESUF=$(exesuf $target_os)
2323 HOSTEXESUF=$(exesuf $host_os)
2324
2325 # set temporary file name
2326 : ${TMPDIR:=$TEMPDIR}
2327 : ${TMPDIR:=$TMP}
2328 : ${TMPDIR:=/tmp}
2329
2330 if ! check_cmd mktemp -u XXXXXX; then
2331     # simple replacement for missing mktemp
2332     # NOT SAFE FOR GENERAL USE
2333     mktemp(){
2334         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2335     }
2336 fi
2337
2338 tmpfile(){
2339     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2340         (set -C; exec > $tmp) 2>/dev/null ||
2341         die "Unable to create temporary file in $TMPDIR."
2342     append TMPFILES $tmp
2343     eval $1=$tmp
2344 }
2345
2346 trap 'rm -f -- $TMPFILES' EXIT
2347
2348 tmpfile TMPASM .asm
2349 tmpfile TMPC   .c
2350 tmpfile TMPE   $EXESUF
2351 tmpfile TMPH   .h
2352 tmpfile TMPO   .o
2353 tmpfile TMPS   .S
2354 tmpfile TMPSH  .sh
2355 tmpfile TMPV   .ver
2356
2357 unset -f mktemp
2358
2359 chmod +x $TMPE
2360
2361 # make sure we can execute files in $TMPDIR
2362 cat > $TMPSH 2>> $logfile <<EOF
2363 #! /bin/sh
2364 EOF
2365 chmod +x $TMPSH >> $logfile 2>&1
2366 if ! $TMPSH >> $logfile 2>&1; then
2367     cat <<EOF
2368 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2369 variable to another directory and make sure that it is not mounted noexec.
2370 EOF
2371     die "Sanity test failed."
2372 fi
2373
2374 ccc_flags(){
2375     for flag; do
2376         case $flag in
2377             -std=c99)           echo -c99                       ;;
2378             -mcpu=*)            echo -arch ${flag#*=}           ;;
2379             -mieee)             echo -ieee                      ;;
2380             -O*|-fast)          echo $flag                      ;;
2381             -fno-math-errno)    echo -assume nomath_errno       ;;
2382             -g)                 echo -g3                        ;;
2383             -Wall)              echo -msg_enable level2         ;;
2384             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2385             -Wl,*)              echo $flag                      ;;
2386             -f*|-W*)                                            ;;
2387             *)                  echo $flag                      ;;
2388         esac
2389    done
2390 }
2391
2392 cparser_flags(){
2393     for flag; do
2394         case $flag in
2395             -Wno-switch)             echo -Wno-switch-enum ;;
2396             -Wno-format-zero-length) ;;
2397             -Wdisabled-optimization) ;;
2398             -Wno-pointer-sign)       echo -Wno-other ;;
2399             *)                       echo $flag ;;
2400         esac
2401     done
2402 }
2403
2404 msvc_common_flags(){
2405     for flag; do
2406         case $flag in
2407             # In addition to specifying certain flags under the compiler
2408             # specific filters, they must be specified here as well or else the
2409             # generic catch all at the bottom will print the original flag.
2410             -Wall)                ;;
2411             -std=c99)             ;;
2412             # Common flags
2413             -fomit-frame-pointer) ;;
2414             -g)                   echo -Z7 ;;
2415             -fno-math-errno)      ;;
2416             -fno-common)          ;;
2417             -fno-signed-zeros)    ;;
2418             -fPIC)                ;;
2419             -mthumb)              ;;
2420             -march=*)             ;;
2421             -lz)                  echo zlib.lib ;;
2422             -lavifil32)           echo vfw32.lib ;;
2423             -lavicap32)           echo vfw32.lib user32.lib ;;
2424             -l*)                  echo ${flag#-l}.lib ;;
2425             *)                    echo $flag ;;
2426         esac
2427     done
2428 }
2429
2430 msvc_flags(){
2431     msvc_common_flags "$@"
2432     for flag; do
2433         case $flag in
2434             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2435                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2436                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2437                                        -wd4273 ;;
2438         esac
2439     done
2440 }
2441
2442 icl_flags(){
2443     msvc_common_flags "$@"
2444     for flag; do
2445         case $flag in
2446             # Despite what Intel's documentation says -Wall, which is supported
2447             # on Windows, does enable remarks so disable them here.
2448             -Wall)                echo $flag -Qdiag-disable:remark ;;
2449             -std=c99)             echo -Qstd=c99 ;;
2450         esac
2451     done
2452 }
2453
2454 pgi_flags(){
2455     for flag; do
2456         case $flag in
2457             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2458             -fomit-frame-pointer) echo -Mnoframe ;;
2459             -g)                   echo -gopt ;;
2460             *)                    echo $flag ;;
2461         esac
2462     done
2463 }
2464
2465 suncc_flags(){
2466     for flag; do
2467         case $flag in
2468             -march=*|-mcpu=*)
2469                 case "${flag#*=}" in
2470                     native)                   echo -xtarget=native       ;;
2471                     v9|niagara)               echo -xarch=sparc          ;;
2472                     ultrasparc)               echo -xarch=sparcvis       ;;
2473                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2474                     i586|pentium)             echo -xchip=pentium        ;;
2475                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2476                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2477                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2478                     pentium4*)          echo -xtarget=pentium4           ;;
2479                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2480                     *-sse3)             echo -xarch=sse3                 ;;
2481                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2482                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2483                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2484                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2485                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2486                     k8|opteron|athlon64|athlon-fx)
2487                                                echo -xarch=sse2a         ;;
2488                     athlon*)                   echo -xarch=pentium_proa  ;;
2489                 esac
2490                 ;;
2491             -std=c99)             echo -xc99              ;;
2492             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2493             -fPIC)                echo -KPIC -xcode=pic32 ;;
2494             -W*,*)                echo $flag              ;;
2495             -f*-*|-W*|-mimpure-text)                      ;;
2496             -shared)              echo -G                 ;;
2497             *)                    echo $flag              ;;
2498         esac
2499     done
2500 }
2501
2502 tms470_flags(){
2503     for flag; do
2504         case $flag in
2505             -march=*|-mcpu=*)
2506                 case "${flag#*=}" in
2507                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2508                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2509                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2510                     armv6*|arm11*)          echo -mv=6   ;;
2511                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2512                                             echo -mv=5e  ;;
2513                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2514                 esac
2515                 ;;
2516             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2517             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2518             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2519             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2520             -msoft-float)   echo --float_support=vfplib       ;;
2521             -O[0-3]|-mf=*)  echo $flag                        ;;
2522             -g)             echo -g -mn                       ;;
2523             -pds=*)         echo $flag                        ;;
2524             -D*|-I*)        echo $flag                        ;;
2525             --gcc|--abi=*)  echo $flag                        ;;
2526             -me)            echo $flag                        ;;
2527         esac
2528     done
2529 }
2530
2531 probe_cc(){
2532     pfx=$1
2533     _cc=$2
2534
2535     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2536     unset _ld_o _ldflags _ld_lib _ld_path
2537     unset _depflags _DEPCMD _DEPFLAGS
2538     _flags_filter=echo
2539
2540     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2541         _type=llvm_gcc
2542         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2543         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2544         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2545         _cflags_speed='-O3'
2546         _cflags_size='-Os'
2547     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2548         _type=gcc
2549         gcc_version=$($_cc --version | head -n1)
2550         gcc_basever=$($_cc -dumpversion)
2551         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2552         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2553         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2554         if ! $_cc -dumpversion | grep -q '^2\.'; then
2555             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2556         fi
2557         _cflags_speed='-O3'
2558         _cflags_size='-Os'
2559     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2560         _type=icc
2561         _ident=$($_cc --version | head -n1)
2562         _depflags='-MMD'
2563         _cflags_speed='-O3'
2564         _cflags_size='-Os'
2565         _cflags_noopt='-O1'
2566     elif $_cc -v 2>&1 | grep -q xlc; then
2567         _type=xlc
2568         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2569         _cflags_speed='-O5'
2570         _cflags_size='-O5 -qcompact'
2571     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2572         _type=ccc
2573         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2574         _DEPFLAGS='-M'
2575         _cflags_speed='-fast'
2576         _cflags_size='-O1'
2577         _flags_filter=ccc_flags
2578     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2579         test -d "$sysroot" || die "No valid sysroot specified."
2580         _type=armcc
2581         _ident=$($_cc --vsn | head -n1)
2582         armcc_conf="$PWD/armcc.conf"
2583         $_cc --arm_linux_configure                 \
2584              --arm_linux_config_file="$armcc_conf" \
2585              --configure_sysroot="$sysroot"        \
2586              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2587              die "Error creating armcc configuration file."
2588         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2589         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2590         as_default="${cross_prefix}gcc"
2591         _depflags='-MMD'
2592         _cflags_speed='-O3'
2593         _cflags_size='-Os'
2594     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2595         _type=tms470
2596         _ident=$($_cc -version | head -n1 | tr -s ' ')
2597         _flags='--gcc --abi=eabi -me'
2598         _cc_e='-ppl -fe=$@'
2599         _cc_o='-fe=$@'
2600         _depflags='-ppa -ppd=$(@:.o=.d)'
2601         _cflags_speed='-O3 -mf=5'
2602         _cflags_size='-O3 -mf=2'
2603         _flags_filter=tms470_flags
2604     elif $_cc -v 2>&1 | grep -q clang; then
2605         _type=clang
2606         _ident=$($_cc --version | head -n1)
2607         _depflags='-MMD'
2608         _cflags_speed='-O3'
2609         _cflags_size='-Os'
2610     elif $_cc -V 2>&1 | grep -q Sun; then
2611         _type=suncc
2612         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2613         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2614         _DEPFLAGS='-xM1 -xc99'
2615         _ldflags='-std=c99'
2616         _cflags_speed='-O5'
2617         _cflags_size='-O5 -xspace'
2618         _flags_filter=suncc_flags
2619     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2620         _type=pathscale
2621         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2622         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2623         _cflags_speed='-O2'
2624         _cflags_size='-Os'
2625         _flags_filter='filter_out -Wdisabled-optimization'
2626     elif $_cc -v 2>&1 | grep -q Open64; then
2627         _type=open64
2628         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2629         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2630         _cflags_speed='-O2'
2631         _cflags_size='-Os'
2632         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2633     elif $_cc -V 2>&1 | grep -q Portland; then
2634         _type=pgi
2635         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2636         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2637         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2638         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2639         _cflags_noopt="-O1"
2640         _flags_filter=pgi_flags
2641     elif $_cc 2>&1 | grep -q Microsoft; then
2642         _type=msvc
2643         _ident=$($cc 2>&1 | head -n1)
2644         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2645         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2646         _cflags_speed="-O2"
2647         _cflags_size="-O1"
2648         # Nonstandard output options, to avoid msys path conversion issues.
2649         # Relies on wrapper to remap it.
2650         if $_cc 2>&1 | grep -q Linker; then
2651             _ld_o='-out $@'
2652         else
2653             _ld_o='-Fe$@'
2654         fi
2655         _cc_o='-Fo $@'
2656         _cc_e='-P -Fi $@'
2657         _flags_filter=msvc_flags
2658         _ld_lib='lib%.a'
2659         _ld_path='-libpath:'
2660         _flags='-nologo'
2661         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2662         if [ $pfx = hostcc ]; then
2663             append _cflags -Dsnprintf=_snprintf
2664         fi
2665     elif $_cc 2>&1 | grep -q Intel; then
2666         _type=icl
2667         _ident=$($cc 2>&1 | head -n1)
2668         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2669         # Not only is O3 broken on 13.x+ but it is slower on all previous
2670         # versions (tested) as well.
2671         _cflags_speed="-O2"
2672         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2673         # Nonstandard output options, to avoid msys path conversion issues.
2674         # Relies on wrapper to remap it.
2675         if $_cc 2>&1 | grep -q Linker; then
2676             _ld_o='-out $@'
2677         else
2678             _ld_o='-Fe$@'
2679         fi
2680         _cc_o='-Fo $@'
2681         _cc_e='-P'
2682         _flags_filter=icl_flags
2683         _ld_lib='lib%.a'
2684         _ld_path='-libpath:'
2685         # -Qdiag-error to make icl error when seeing certain unknown arguments
2686         _flags='-nologo -Qdiag-error:4044,10157'
2687         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2688         # with MSVC which enables it by default.
2689         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2690         if [ $pfx = hostcc ]; then
2691             append _cflags -Dsnprintf=_snprintf
2692         fi
2693     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2694         _type=cparser
2695         _ident=$($_cc --version | head -n1)
2696         _depflags='-MMD'
2697         _cflags_speed='-O4'
2698         _cflags_size='-O2'
2699         _flags_filter=cparser_flags
2700     fi
2701
2702     eval ${pfx}_type=\$_type
2703     eval ${pfx}_ident=\$_ident
2704 }
2705
2706 set_ccvars(){
2707     eval ${1}_C=\${_cc_c-\${${1}_C}}
2708     eval ${1}_E=\${_cc_e-\${${1}_E}}
2709     eval ${1}_O=\${_cc_o-\${${1}_O}}
2710
2711     if [ -n "$_depflags" ]; then
2712         eval ${1}_DEPFLAGS=\$_depflags
2713     else
2714         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2715         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2716         eval DEP${1}FLAGS=\$_flags
2717     fi
2718 }
2719
2720 probe_cc cc "$cc"
2721 cflags_filter=$_flags_filter
2722 cflags_speed=$_cflags_speed
2723 cflags_size=$_cflags_size
2724 cflags_noopt=$_cflags_noopt
2725 add_cflags $_flags $_cflags
2726 cc_ldflags=$_ldflags
2727 set_ccvars CC
2728
2729 probe_cc hostcc "$host_cc"
2730 host_cflags_filter=$_flags_filter
2731 add_host_cflags  $_flags $_cflags
2732 set_ccvars HOSTCC
2733
2734 test -n "$cc_type" && enable $cc_type ||
2735     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2736
2737 : ${as_default:=$cc}
2738 : ${dep_cc_default:=$cc}
2739 : ${ld_default:=$cc}
2740 : ${host_ld_default:=$host_cc}
2741 set_default ar as dep_cc ld host_ld
2742
2743 probe_cc as "$as"
2744 asflags_filter=$_flags_filter
2745 add_asflags $_flags $_cflags
2746 set_ccvars AS
2747
2748 probe_cc ld "$ld"
2749 ldflags_filter=$_flags_filter
2750 add_ldflags $_flags $_ldflags
2751 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2752 LD_O=${_ld_o-$LD_O}
2753 LD_LIB=${_ld_lib-$LD_LIB}
2754 LD_PATH=${_ld_path-$LD_PATH}
2755
2756 probe_cc hostld "$host_ld"
2757 host_ldflags_filter=$_flags_filter
2758 add_host_ldflags $_flags $_ldflags
2759 HOSTLD_O=${_ld_o-$HOSTLD_O}
2760
2761 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2762     probe_cc depcc "$dep_cc"
2763     CCDEP=${_DEPCMD:-$DEPCMD}
2764     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2765     DEPCCFLAGS=$_flags
2766 fi
2767
2768 if $ar 2>&1 | grep -q Microsoft; then
2769     arflags="-nologo"
2770     ar_o='-out:$@'
2771 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2772     arflags="rq"
2773     ar_o='$@'
2774 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2775     arflags='-Xany -r -c'
2776     ar_o='$@'
2777 else
2778     arflags="rc"
2779     ar_o='$@'
2780 fi
2781
2782 add_cflags $extra_cflags
2783 add_asflags $extra_cflags
2784
2785 if test -n "$sysroot"; then
2786     case "$cc_type" in
2787         gcc|llvm_gcc|clang)
2788             add_cppflags --sysroot="$sysroot"
2789             add_ldflags --sysroot="$sysroot"
2790         ;;
2791         tms470)
2792             add_cppflags -I"$sysinclude"
2793             add_ldflags  --sysroot="$sysroot"
2794         ;;
2795     esac
2796 fi
2797
2798 if test "$cpu" = host; then
2799     enabled cross_compile &&
2800         die "--cpu=host makes no sense when cross-compiling."
2801
2802     case "$cc_type" in
2803         gcc|llvm_gcc)
2804             check_native(){
2805                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2806                 sed -n "/cc1.*$1=/{
2807                             s/.*$1=\\([^ ]*\\).*/\\1/
2808                             p
2809                             q
2810                         }" $TMPE
2811             }
2812             cpu=$(check_native -march || check_native -mcpu)
2813         ;;
2814     esac
2815
2816     test "${cpu:-host}" = host &&
2817         die "--cpu=host not supported with compiler $cc"
2818 fi
2819
2820 # Deal with common $arch aliases
2821 case "$arch" in
2822     aarch64|arm64)
2823         arch="aarch64"
2824     ;;
2825     arm*)
2826         arch="arm"
2827     ;;
2828     mips*|IP*)
2829         arch="mips"
2830     ;;
2831     parisc*|hppa*)
2832         arch="parisc"
2833     ;;
2834     "Power Macintosh"|ppc*|powerpc*)
2835         arch="ppc"
2836     ;;
2837     s390|s390x)
2838         arch="s390"
2839     ;;
2840     sh4|sh)
2841         arch="sh4"
2842     ;;
2843     sun4u|sparc*)
2844         arch="sparc"
2845     ;;
2846     tilegx|tile-gx)
2847         arch="tilegx"
2848     ;;
2849     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2850         arch="x86"
2851     ;;
2852 esac
2853
2854 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2855 enable $arch
2856
2857 # Add processor-specific flags
2858 if enabled aarch64; then
2859
2860     case $cpu in
2861         armv*)
2862             cpuflags="-march=$cpu"
2863         ;;
2864         *)
2865             cpuflags="-mcpu=$cpu"
2866         ;;
2867     esac
2868
2869 elif enabled alpha; then
2870
2871     cpuflags="-mcpu=$cpu"
2872
2873 elif enabled arm; then
2874
2875     check_arm_arch() {
2876         check_cpp_condition stddef.h \
2877             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2878             $cpuflags
2879     }
2880
2881     probe_arm_arch() {
2882         if   check_arm_arch 4;        then echo armv4;
2883         elif check_arm_arch 4T;       then echo armv4t;
2884         elif check_arm_arch 5;        then echo armv5;
2885         elif check_arm_arch 5E;       then echo armv5e;
2886         elif check_arm_arch 5T;       then echo armv5t;
2887         elif check_arm_arch 5TE;      then echo armv5te;
2888         elif check_arm_arch 5TEJ;     then echo armv5te;
2889         elif check_arm_arch 6;        then echo armv6;
2890         elif check_arm_arch 6J;       then echo armv6j;
2891         elif check_arm_arch 6K;       then echo armv6k;
2892         elif check_arm_arch 6Z;       then echo armv6z;
2893         elif check_arm_arch 6ZK;      then echo armv6zk;
2894         elif check_arm_arch 6T2;      then echo armv6t2;
2895         elif check_arm_arch 7;        then echo armv7;
2896         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2897         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2898         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2899         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2900         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2901         fi
2902     }
2903
2904     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2905
2906     case $cpu in
2907         armv*)
2908             cpuflags="-march=$cpu"
2909             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2910         ;;
2911         *)
2912             cpuflags="-mcpu=$cpu"
2913             case $cpu in
2914                 cortex-a*)                               subarch=armv7a  ;;
2915                 cortex-r*)                               subarch=armv7r  ;;
2916                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2917                 arm11*)                                  subarch=armv6   ;;
2918                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2919                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2920                 *)                             subarch=$(probe_arm_arch) ;;
2921             esac
2922         ;;
2923     esac
2924
2925     case "$subarch" in
2926         armv5t*)    enable fast_clz                ;;
2927         armv[6-8]*) enable fast_clz fast_unaligned ;;
2928     esac
2929
2930 elif enabled avr32; then
2931
2932     case $cpu in
2933         ap7[02]0[0-2])
2934             subarch="avr32_ap"
2935             cpuflags="-mpart=$cpu"
2936         ;;
2937         ap)
2938             subarch="avr32_ap"
2939             cpuflags="-march=$cpu"
2940         ;;
2941         uc3[ab]*)
2942             subarch="avr32_uc"
2943             cpuflags="-mcpu=$cpu"
2944         ;;
2945         uc)
2946             subarch="avr32_uc"
2947             cpuflags="-march=$cpu"
2948         ;;
2949     esac
2950
2951 elif enabled bfin; then
2952
2953     cpuflags="-mcpu=$cpu"
2954
2955 elif enabled mips; then
2956
2957     cpuflags="-march=$cpu"
2958
2959 elif enabled ppc; then
2960
2961     case $(tolower $cpu) in
2962         601|ppc601|powerpc601)
2963             cpuflags="-mcpu=601"
2964             disable altivec
2965         ;;
2966         603*|ppc603*|powerpc603*)
2967             cpuflags="-mcpu=603"
2968             disable altivec
2969         ;;
2970         604*|ppc604*|powerpc604*)
2971             cpuflags="-mcpu=604"
2972             disable altivec
2973         ;;
2974         g3|75*|ppc75*|powerpc75*)
2975             cpuflags="-mcpu=750"
2976             disable altivec
2977         ;;
2978         g4|745*|ppc745*|powerpc745*)
2979             cpuflags="-mcpu=7450"
2980         ;;
2981         74*|ppc74*|powerpc74*)
2982             cpuflags="-mcpu=7400"
2983         ;;
2984         g5|970|ppc970|powerpc970)
2985             cpuflags="-mcpu=970"
2986         ;;
2987         power[3-7]*)
2988             cpuflags="-mcpu=$cpu"
2989         ;;
2990         cell)
2991             cpuflags="-mcpu=cell"
2992             enable ldbrx
2993         ;;
2994         e500mc)
2995             cpuflags="-mcpu=e500mc"
2996             disable altivec
2997         ;;
2998         e500v2)
2999             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3000             disable altivec
3001         ;;
3002         e500)
3003             cpuflags="-mcpu=8540 -mhard-float"
3004             disable altivec
3005         ;;
3006     esac
3007
3008 elif enabled sparc; then
3009
3010     case $cpu in
3011         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3012             cpuflags="-mcpu=$cpu"
3013             disable vis
3014         ;;
3015         ultrasparc*|niagara[234])
3016             cpuflags="-mcpu=$cpu"
3017         ;;
3018     esac
3019
3020 elif enabled x86; then
3021
3022     case $cpu in
3023         i[345]86|pentium)
3024             cpuflags="-march=$cpu"
3025             disable mmx
3026         ;;
3027         # targets that do NOT support nopl and conditional mov (cmov)
3028         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3029             cpuflags="-march=$cpu"
3030             disable i686
3031         ;;
3032         # targets that do support nopl and conditional mov (cmov)
3033         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3034             cpuflags="-march=$cpu"
3035             enable i686
3036             enable fast_cmov
3037         ;;
3038         # targets that do support conditional mov but on which it's slow
3039         pentium4|pentium4m|prescott|nocona)
3040             cpuflags="-march=$cpu"
3041             enable i686
3042             disable fast_cmov
3043         ;;
3044     esac
3045
3046 fi
3047
3048 if [ "$cpu" != generic ]; then
3049     add_cflags  $cpuflags
3050     add_asflags $cpuflags
3051 fi
3052
3053 # compiler sanity check
3054 check_exec <<EOF
3055 int main(void){ return 0; }
3056 EOF
3057 if test "$?" != 0; then
3058     echo "$cc is unable to create an executable file."
3059     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3060         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3061         echo "Only do this if you know what cross compiling means."
3062     fi
3063     die "C compiler test failed."
3064 fi
3065
3066 add_cppflags -D_ISOC99_SOURCE
3067 check_cflags -std=c99
3068 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3069 #include <stdlib.h>
3070 EOF
3071 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3072 #include <stdlib.h>
3073 EOF
3074
3075 check_host_cflags -std=c99
3076 check_host_cflags -Wall
3077
3078 check_64bit(){
3079     arch32=$1
3080     arch64=$2
3081     expr=$3
3082     check_code cc "" "int test[2*($expr) - 1]" &&
3083         subarch=$arch64 || subarch=$arch32
3084 }
3085
3086 case "$arch" in
3087     aarch64|alpha|ia64)
3088         spic=$shared
3089     ;;
3090     mips)
3091         check_64bit mips mips64 '_MIPS_SIM > 1'
3092         spic=$shared
3093     ;;
3094     parisc)
3095         check_64bit parisc parisc64 'sizeof(void *) > 4'
3096         spic=$shared
3097     ;;
3098     ppc)
3099         check_64bit ppc ppc64 'sizeof(void *) > 4'
3100         spic=$shared
3101     ;;
3102     sparc)
3103         check_64bit sparc sparc64 'sizeof(void *) > 4'
3104         spic=$shared
3105     ;;
3106     x86)
3107         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3108         if test "$subarch" = "x86_64"; then
3109             spic=$shared
3110         fi
3111     ;;
3112 esac
3113
3114 enable $subarch
3115 enabled spic && enable_weak pic
3116
3117 # OS specific
3118 case $target_os in
3119     aix)
3120         SHFLAGS=-shared
3121         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3122         enabled shared && add_ldflags -Wl,-brtl
3123         ;;
3124     haiku)
3125         prefix_default="/boot/common"
3126         network_extralibs="-lnetwork"
3127         host_libs=
3128         ;;
3129     sunos)
3130         SHFLAGS='-shared -Wl,-h,$$(@F)'
3131         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3132         network_extralibs="-lsocket -lnsl"
3133         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3134         # When using suncc to build, the Solaris linker will mark
3135         # an executable with each instruction set encountered by
3136         # the Solaris assembler.  As our libraries contain their own
3137         # guards for processor-specific code, instead suppress
3138         # generation of the HWCAPS ELF section on Solaris x86 only.
3139         enabled_all suncc x86 &&
3140             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3141             add_ldflags -Wl,-M,mapfile
3142         nm_default='nm -P -g'
3143         ;;
3144     netbsd)
3145         disable symver
3146         oss_indev_extralibs="-lossaudio"
3147         oss_outdev_extralibs="-lossaudio"
3148         ;;
3149     openbsd|bitrig)
3150         disable symver
3151         SHFLAGS='-shared'
3152         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3153         SLIB_INSTALL_LINKS=
3154         oss_indev_extralibs="-lossaudio"
3155         oss_outdev_extralibs="-lossaudio"
3156         ;;
3157     dragonfly)
3158         disable symver
3159         ;;
3160     freebsd)
3161         ;;
3162     bsd/os)
3163         add_extralibs -lpoll -lgnugetopt
3164         ;;
3165     darwin)
3166         gas="gas-preprocessor.pl $cc"
3167         enabled ppc && add_asflags -force_cpusubtype_ALL
3168         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3169         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3170         add_ldflags -Wl,-dynamic,-search_paths_first
3171         SLIBSUF=".dylib"
3172         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3173         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3174         objformat="macho"
3175         enabled x86_64 && objformat="macho64"
3176         enabled_any pic shared ||
3177             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3178         ;;
3179     mingw32*)
3180         if test $target_os = "mingw32ce"; then
3181             disable network
3182         else
3183             target_os=mingw32
3184         fi
3185         LIBTARGET=i386
3186         if enabled x86_64; then
3187             LIBTARGET="i386:x86-64"
3188         elif enabled arm; then
3189             LIBTARGET=arm-wince
3190         fi
3191         check_ldflags -Wl,--nxcompat
3192         check_ldflags -Wl,--dynamicbase
3193         shlibdir_default="$bindir_default"
3194         SLIBPREF=""
3195         SLIBSUF=".dll"
3196         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3197         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3198         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3199         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3200         SLIB_INSTALL_LINKS=
3201         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3202         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3203         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3204         objformat="win32"
3205         dlltool="${cross_prefix}dlltool"
3206         ranlib=:
3207         enable dos_paths
3208         ;;
3209     win32|win64)
3210         if enabled shared; then
3211             # Link to the import library instead of the normal static library
3212             # for shared libs.
3213             LD_LIB='%.lib'
3214             # Cannot build both shared and static libs with MSVC or icl.
3215             disable static
3216         fi
3217         shlibdir_default="$bindir_default"
3218         SLIBPREF=""
3219         SLIBSUF=".dll"
3220         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3221         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3222         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3223         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3224         SLIB_INSTALL_LINKS=
3225         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3226         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3227         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3228         objformat="win32"
3229         ranlib=:
3230         enable dos_paths
3231         ;;
3232     cygwin*)
3233         target_os=cygwin
3234         shlibdir_default="$bindir_default"
3235         SLIBPREF="cyg"
3236         SLIBSUF=".dll"
3237         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3238         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3239         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3240         SLIB_INSTALL_LINKS=
3241         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3242         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3243         objformat="win32"
3244         enable dos_paths
3245         ;;
3246     *-dos|freedos|opendos)
3247         network_extralibs="-lsocket"
3248         objformat="coff"
3249         enable dos_paths
3250         add_cppflags -U__STRICT_ANSI__
3251         ;;
3252     linux)
3253         enable dv1394
3254         ;;
3255     irix*)
3256         target_os=irix
3257         ranlib="echo ignoring ranlib"
3258         ;;
3259     os/2*)
3260         ln_s="cp -f"
3261         objformat="aout"
3262         add_cppflags -D_GNU_SOURCE
3263         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3264         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3265         LIBSUF="_s.a"
3266         SLIBPREF=""
3267         SLIBSUF=".dll"
3268         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3269         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3270         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3271             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3272             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3273             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3274             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3275             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3276         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3277             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3278         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3279         enable dos_paths
3280         ;;
3281     gnu/kfreebsd)
3282         add_cppflags -D_BSD_SOURCE
3283         ;;
3284     gnu)
3285         ;;
3286     qnx)
3287         add_cppflags -D_QNX_SOURCE
3288         network_extralibs="-lsocket"
3289         ;;
3290     symbian)
3291         SLIBSUF=".dll"
3292         enable dos_paths
3293         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3294         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3295         add_ldflags -Wl,--target1-abs,--no-undefined \
3296                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3297                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3298         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3299                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3300                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3301         ;;
3302     osf1)
3303         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3304         ;;
3305     minix)
3306         ;;
3307     plan9)
3308         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3309                      -D_REENTRANT_SOURCE        \
3310                      -D_RESEARCH_SOURCE         \
3311                      -DFD_SETSIZE=96            \
3312                      -DHAVE_SOCK_OPTS
3313         add_compat strtod.o strtod=avpriv_strtod
3314         network_extralibs='-lbsd'
3315         exeobjs=compat/plan9/main.o
3316         disable avserver
3317         cp_f='cp'
3318         ;;
3319     none)
3320         ;;
3321     *)
3322         die "Unknown OS '$target_os'."
3323         ;;
3324 esac
3325
3326 # determine libc flavour
3327
3328 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3329 if check_cpp_condition features.h "defined __UCLIBC__"; then
3330     libc_type=uclibc
3331     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3332 elif check_cpp_condition features.h "defined __GLIBC__"; then
3333     libc_type=glibc
3334     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3335 # MinGW headers can be installed on Cygwin, so check for newlib first.
3336 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3337     libc_type=newlib
3338     add_cppflags -U__STRICT_ANSI__
3339 elif check_header _mingw.h; then
3340     libc_type=mingw
3341     check_cpp_condition _mingw.h \
3342         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3343             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3344         die "ERROR: MinGW runtime version must be >= 3.15."
3345     add_cppflags -U__STRICT_ANSI__
3346 elif check_func_headers stdlib.h _get_doserrno; then
3347     libc_type=msvcrt
3348     add_compat strtod.o strtod=avpriv_strtod
3349     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3350                                  _snprintf=avpriv_snprintf  \
3351                                  vsnprintf=avpriv_vsnprintf
3352     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3353     # 0x601 by default unless something else is set by the user.
3354     # This can easily lead to us detecting functions only present
3355     # in such new versions and producing binaries requiring windows 7.0.
3356     # Therefore explicitly set the default to XP unless the user has
3357     # set something else on the command line.
3358     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3359 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3360     libc_type=klibc
3361 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3362     libc_type=bionic
3363     add_compat strtod.o strtod=avpriv_strtod
3364 fi
3365
3366 test -n "$libc_type" && enable $libc_type
3367
3368 # hacks for compiler/libc/os combinations
3369
3370 if enabled_all tms470 glibc; then
3371     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3372     add_cppflags -D__USER_LABEL_PREFIX__=
3373     add_cppflags -D__builtin_memset=memset
3374     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3375     add_cflags   -pds=48    # incompatible redefinition of macro
3376 fi
3377
3378 if enabled_all ccc glibc; then
3379     add_ldflags -Wl,-z,now  # calls to libots crash without this
3380 fi
3381
3382 esc(){
3383     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3384 }
3385
3386 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3387
3388 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3389
3390 set_default $PATHS_LIST
3391 set_default nm
3392
3393 # we need to build at least one lib type
3394 if ! enabled_any static shared; then
3395     cat <<EOF
3396 At least one library type must be built.
3397 Specify --enable-static to build the static libraries or --enable-shared to
3398 build the shared libraries as well. To only build the shared libraries specify
3399 --disable-static in addition to --enable-shared.
3400 EOF
3401     exit 1;
3402 fi
3403
3404 die_license_disabled() {
3405     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3406 }
3407
3408 die_license_disabled gpl libcdio
3409 die_license_disabled gpl libx264
3410 die_license_disabled gpl libxavs
3411 die_license_disabled gpl libxvid
3412 die_license_disabled gpl x11grab
3413
3414 die_license_disabled nonfree libfaac
3415 die_license_disabled nonfree libfdk_aac
3416 die_license_disabled nonfree openssl
3417
3418 die_license_disabled version3 libopencore_amrnb
3419 die_license_disabled version3 libopencore_amrwb
3420 die_license_disabled version3 libvo_aacenc
3421 die_license_disabled version3 libvo_amrwbenc
3422
3423 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3424
3425 disabled optimizations || check_cflags -fomit-frame-pointer
3426
3427 enable_weak_pic() {
3428     disabled pic && return
3429     enable pic
3430     add_cppflags -DPIC
3431     case "$target_os" in
3432     mingw*|cygwin*)
3433         ;;
3434     *)
3435         add_cflags -fPIC
3436         ;;
3437     esac
3438     add_asflags  -fPIC
3439 }
3440
3441 enabled pic && enable_weak_pic
3442
3443 check_cc <<EOF || die "Symbol mangling check failed."
3444 int ff_extern;
3445 EOF
3446 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3447 extern_prefix=${sym%%ff_extern*}
3448
3449 check_cc <<EOF && enable_weak inline_asm
3450 void foo(void) { __asm__ volatile ("" ::); }
3451 EOF
3452
3453 _restrict=
3454 for restrict_keyword in restrict __restrict__ __restrict; do
3455     check_cc <<EOF && _restrict=$restrict_keyword && break
3456 void foo(char * $restrict_keyword p);
3457 EOF
3458 done
3459
3460 check_cc <<EOF && enable pragma_deprecated
3461 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3462 EOF
3463
3464 check_cc <<EOF && enable attribute_packed
3465 struct { int x; } __attribute__((packed)) x;
3466 EOF
3467
3468 check_cc <<EOF && enable attribute_may_alias
3469 union { int x; } __attribute__((may_alias)) x;
3470 EOF
3471
3472 check_cc <<EOF || die "endian test failed"
3473 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3474 EOF
3475 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3476
3477 check_inline_asm inline_asm_labels '"1:\n"'
3478
3479 if enabled alpha; then
3480
3481     check_cflags -mieee
3482
3483 elif enabled arm; then
3484
3485     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3486     enabled thumb && check_cflags -mthumb || check_cflags -marm
3487     nogas=die
3488
3489     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3490         enable vfp_args
3491     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3492         case "${cross_prefix:-$cc}" in
3493             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3494             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3495 __asm__ (".eabi_attribute 28, 1");
3496 int main(void) { return 0; }
3497 EOF
3498         esac
3499         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3500     fi
3501
3502     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3503     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3504     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3505     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3506     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3507     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3508
3509     [ $target_os = linux ] ||
3510         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3511             $ARCH_EXT_LIST_ARM
3512
3513     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3514     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3515
3516     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3517
3518 elif enabled mips; then
3519
3520     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3521
3522 elif enabled parisc; then
3523
3524     if enabled gcc; then
3525         case $($cc -dumpversion) in
3526             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3527         esac
3528     fi
3529
3530 elif enabled ppc; then
3531
3532     enable local_aligned_8 local_aligned_16
3533
3534     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3535     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3536     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3537     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3538
3539     # AltiVec flags: The FSF version of GCC differs from the Apple version
3540     if enabled altivec; then
3541         nogas=warn
3542         check_cflags -maltivec -mabi=altivec &&
3543         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3544         check_cflags -faltivec
3545
3546         # check if our compiler supports Motorola AltiVec C API
3547         check_cc <<EOF || disable altivec
3548 $inc_altivec_h
3549 int main(void) {
3550     vector signed int v1 = (vector signed int) { 0 };
3551     vector signed int v2 = (vector signed int) { 1 };
3552     v1 = vec_add(v1, v2);
3553     return 0;
3554 }
3555 EOF
3556
3557         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3558     fi
3559
3560 elif enabled sparc; then
3561
3562     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3563
3564 elif enabled x86; then
3565
3566     check_builtin rdtsc    intrin.h   "__rdtsc()"
3567     check_builtin mm_empty mmintrin.h "_mm_empty()"
3568
3569     enable local_aligned_8 local_aligned_16
3570
3571     # check whether EBP is available on x86
3572     # As 'i' is stored on the stack, this program will crash
3573     # if the base pointer is used to access it because the
3574     # base pointer is cleared in the inline assembly code.
3575     check_exec_crash <<EOF && enable ebp_available
3576 volatile int i=0;
3577 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3578 return i;
3579 EOF
3580
3581     # check whether EBX is available on x86
3582     check_inline_asm ebx_available '""::"b"(0)' &&
3583         check_inline_asm ebx_available '"":::"%ebx"'
3584
3585     # check whether xmm clobbers are supported
3586     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3587
3588     # check whether binutils is new enough to compile SSSE3/MMXEXT
3589     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3590     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3591
3592     if ! disabled_any asm mmx yasm; then
3593         if check_cmd $yasmexe --version; then
3594             enabled x86_64 && yasm_extra="-m amd64"
3595             yasm_debug="-g dwarf2"
3596         elif check_cmd nasm -v; then
3597             yasmexe=nasm
3598             yasm_debug="-g -F dwarf"
3599             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3600         fi
3601
3602         YASMFLAGS="-f $objformat $yasm_extra"
3603         enabled pic               && append YASMFLAGS "-DPIC"
3604         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3605         case "$objformat" in
3606             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3607         esac
3608
3609         check_yasm "movbe ecx, [5]" && enable yasm ||
3610             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3611         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3612         check_yasm "CPU amdnop" && enable cpunop
3613     fi
3614
3615     case "$cpu" in
3616         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3617             disable fast_clz
3618         ;;
3619     esac
3620
3621 fi
3622
3623 if enabled asm; then
3624     as=${gas:=$as}
3625     check_as <<EOF && enable gnu_as || \
3626         $nogas "GNU assembler not found, install gas-preprocessor"
3627 .macro m n
3628 \n: .int 0
3629 .endm
3630 m x
3631 EOF
3632 fi
3633
3634 check_ldflags -Wl,--as-needed
3635
3636 if check_func dlopen; then
3637     ldl=
3638 elif check_func dlopen -ldl; then
3639     ldl=-ldl
3640 fi
3641
3642 if ! disabled network; then
3643     check_type "sys/types.h sys/socket.h" socklen_t
3644     check_type netdb.h "struct addrinfo"
3645     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3646     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3647     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3648     check_type netinet/in.h "struct sockaddr_in6"
3649     check_type poll.h "struct pollfd"
3650     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3651     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3652     check_type netinet/sctp.h "struct sctp_event_subscribe"
3653     check_func getaddrinfo $network_extralibs
3654     check_func getservbyport $network_extralibs
3655     # Prefer arpa/inet.h over winsock2
3656     if check_header arpa/inet.h ; then
3657         check_func closesocket
3658     elif check_header winsock2.h ; then
3659         check_func_headers winsock2.h closesocket -lws2 &&
3660             network_extralibs="-lws2" ||
3661         { check_func_headers winsock2.h closesocket -lws2_32 &&
3662             network_extralibs="-lws2_32"; }
3663         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3664         check_type ws2tcpip.h socklen_t
3665         check_type ws2tcpip.h "struct addrinfo"
3666         check_type ws2tcpip.h "struct group_source_req"
3667         check_type ws2tcpip.h "struct ip_mreq_source"
3668         check_type ws2tcpip.h "struct ipv6_mreq"
3669         check_type winsock2.h "struct pollfd"
3670         check_type ws2tcpip.h "struct sockaddr_in6"
3671         check_type ws2tcpip.h "struct sockaddr_storage"
3672         check_struct winsock2.h "struct sockaddr" sa_len
3673     else
3674         disable network
3675     fi
3676 fi
3677
3678 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3679 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3680
3681 check_func  fcntl
3682 check_func  fork
3683 check_func_headers stdlib.h getenv
3684 check_func  gethrtime
3685 check_func  getopt
3686 check_func  getrusage
3687 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3688 check_func  gettimeofday
3689 check_func  inet_aton $network_extralibs
3690 check_func  isatty
3691 check_func  localtime_r
3692 check_func  ${malloc_prefix}memalign            && enable memalign
3693 check_func  mkstemp
3694 check_func  mmap
3695 check_func  mprotect
3696 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3697 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3698 check_func  setrlimit
3699 check_func  strerror_r
3700 check_func  strptime
3701 check_func  strtok_r
3702 check_func  sched_getaffinity
3703 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3704 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3705 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3706 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3707 check_func  sysconf
3708 check_func  sysctl
3709 check_func  usleep
3710 check_func_headers io.h setmode
3711 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3712 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3713 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3714 check_func_headers windows.h GetProcessAffinityMask
3715 check_func_headers windows.h GetProcessTimes
3716 check_func_headers windows.h GetSystemTimeAsFileTime
3717 check_func_headers windows.h MapViewOfFile
3718 check_func_headers windows.h SetConsoleTextAttribute
3719 check_func_headers windows.h Sleep
3720 check_func_headers windows.h VirtualAlloc
3721
3722 check_header direct.h
3723 check_header dlfcn.h
3724 check_header dxva.h
3725 check_header dxva2api.h
3726 check_header io.h
3727 check_header malloc.h
3728 check_header poll.h
3729 check_header sys/mman.h
3730 check_header sys/param.h
3731 check_header sys/resource.h
3732 check_header sys/select.h
3733 check_header sys/time.h
3734 check_header sys/un.h
3735 check_header unistd.h
3736 check_header vdpau/vdpau.h
3737 check_header vdpau/vdpau_x11.h
3738 check_header VideoDecodeAcceleration/VDADecoder.h
3739 check_header windows.h
3740 check_header X11/extensions/XvMClib.h
3741
3742 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3743 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3744
3745 if ! disabled w32threads && ! enabled pthreads; then
3746     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3747 fi
3748
3749 # check for some common methods of building with pthread support
3750 # do this before the optional library checks as some of them require pthreads
3751 if ! disabled pthreads && ! enabled w32threads; then
3752     enable pthreads
3753     if check_func pthread_create; then
3754         :
3755     elif check_func pthread_create -pthread; then
3756         add_cflags -pthread
3757         add_extralibs -pthread
3758     elif check_func pthread_create -pthreads; then
3759         add_cflags -pthreads
3760         add_extralibs -pthreads
3761     elif check_func pthread_create -lpthreadGC2; then
3762         add_extralibs -lpthreadGC2
3763     elif ! check_lib pthread.h pthread_create -lpthread; then
3764         disable pthreads
3765     fi
3766 fi
3767
3768 for thread in $THREADS_LIST; do
3769     if enabled $thread; then
3770         test -n "$thread_type" &&
3771             die "ERROR: Only one thread type must be selected." ||
3772             thread_type="$thread"
3773     fi
3774 done
3775
3776 enabled sync_val_compare_and_swap && enable atomics_gcc
3777 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
3778 enabled MemoryBarrier && enable atomics_win32
3779
3780 check_lib math.h sin -lm && LIBM="-lm"
3781 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3782
3783 atan2f_args=2
3784 ldexpf_args=2
3785 powf_args=2
3786
3787 for func in $MATH_FUNCS; do
3788     eval check_mathfunc $func \${${func}_args:-1}
3789 done
3790
3791 # these are off by default, so fail if requested and not available
3792 enabled avisynth          && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3793 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3794 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3795 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3796 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3797 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3798 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3799                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3800                                done || die "ERROR: libgsm not found"; }
3801 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3802 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3803 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3804 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3805 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3806 enabled libopenjpeg       && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3807 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3808 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3809 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3810 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3811 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3812 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3813 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3814 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3815 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3816 enabled libvpx            && {
3817     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3818                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3819     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3820                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3821     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3822     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3823 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3824 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3825                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3826                                die "ERROR: libx264 version must be >= 0.118."; }
3827 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3828 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3829 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3830                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3831                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3832                                die "ERROR: openssl not found"; }
3833
3834 if enabled gnutls; then
3835     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3836     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3837 fi
3838
3839 # libdc1394 check
3840 if enabled libdc1394; then
3841     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3842         enable libdc1394_2; } ||
3843     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3844         enable libdc1394_1; } ||
3845     die "ERROR: No version of libdc1394 found "
3846 fi
3847
3848 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3849     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3850     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3851     enable sdl
3852 fi
3853
3854 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3855
3856 check_header linux/fb.h
3857 check_header linux/videodev2.h
3858 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3859
3860 check_header sys/videoio.h
3861
3862 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3863 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3864 # w32api 3.12 had it defined wrong
3865 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3866
3867 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3868 { check_header dev/bktr/ioctl_meteor.h &&
3869   check_header dev/bktr/ioctl_bt848.h; } ||
3870 { check_header machine/ioctl_meteor.h &&
3871   check_header machine/ioctl_bt848.h; } ||
3872 { check_header dev/video/meteor/ioctl_meteor.h &&
3873   check_header dev/video/bktr/ioctl_bt848.h; } ||
3874 check_header dev/ic/bt8xx.h
3875
3876 check_header sndio.h
3877 check_header sys/soundcard.h
3878 check_header soundcard.h
3879
3880 enabled_any alsa_indev alsa_outdev &&
3881     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3882
3883 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
3884     check_func jack_port_get_latency_range -ljack
3885
3886 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3887
3888 if enabled libcdio; then
3889     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
3890     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3891 fi
3892
3893 enabled x11grab                                           &&
3894 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3895 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3896 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3897
3898 enabled vdpau &&
3899     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3900     disable vdpau
3901
3902 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3903
3904 # add some useful compiler flags if supported
3905 check_cflags -Wdeclaration-after-statement
3906 check_cflags -Wall
3907 check_cflags -Wdisabled-optimization
3908 check_cflags -Wpointer-arith
3909 check_cflags -Wredundant-decls
3910 check_cflags -Wcast-qual
3911 check_cflags -Wwrite-strings
3912 check_cflags -Wtype-limits
3913 check_cflags -Wundef
3914 check_cflags -Wmissing-prototypes
3915 check_cflags -Wstrict-prototypes
3916 enabled extra_warnings && check_cflags -Winline
3917
3918 check_disable_warning(){
3919     warning_flag=-W${1#-Wno-}
3920     test_cflags $warning_flag && add_cflags $1
3921 }
3922
3923 check_disable_warning -Wno-parentheses
3924 check_disable_warning -Wno-switch
3925 check_disable_warning -Wno-format-zero-length
3926 check_disable_warning -Wno-pointer-sign
3927
3928 # add some linker flags
3929 check_ldflags -Wl,--warn-common
3930 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3931 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3932
3933 enabled xmm_clobber_test &&
3934     check_ldflags -Wl,--wrap,avcodec_open2              \
3935                   -Wl,--wrap,avcodec_decode_audio4      \
3936                   -Wl,--wrap,avcodec_decode_video2      \
3937                   -Wl,--wrap,avcodec_decode_subtitle2   \
3938                   -Wl,--wrap,avcodec_encode_audio2      \
3939                   -Wl,--wrap,avcodec_encode_video2      \
3940                   -Wl,--wrap,avcodec_encode_subtitle    \
3941                   -Wl,--wrap,sws_scale ||
3942     disable xmm_clobber_test
3943
3944 echo "X{};" > $TMPV
3945 if test_ldflags -Wl,--version-script,$TMPV; then
3946     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3947     check_cc <<EOF && enable symver_asm_label
3948 void ff_foo(void) __asm__ ("av_foo@VERSION");
3949 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3950 EOF
3951     check_cc <<EOF && enable symver_gnu_asm
3952 __asm__(".symver ff_foo,av_foo@VERSION");
3953 void ff_foo(void) {}
3954 EOF
3955 fi
3956
3957 if [ -z "$optflags" ]; then
3958     if enabled small; then
3959         optflags=$cflags_size
3960     elif enabled optimizations; then
3961         optflags=$cflags_speed
3962     else
3963         optflags=$cflags_noopt
3964     fi
3965 fi
3966
3967 check_optflags(){
3968     check_cflags "$@"
3969     enabled lto && check_ldflags "$@"
3970 }
3971
3972
3973 if enabled lto; then
3974     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
3975     check_cflags  -flto
3976     check_ldflags -flto $cpuflags
3977 fi
3978
3979 check_optflags $optflags
3980 check_optflags -fno-math-errno
3981 check_optflags -fno-signed-zeros
3982
3983 if enabled icc; then
3984     # Just warnings, no remarks
3985     check_cflags -w1
3986     # -wd: Disable following warnings
3987     # 144, 167, 556: -Wno-pointer-sign
3988     # 1292: attribute "foo" ignored
3989     # 1419: external declaration in primary source file
3990     # 10006: ignoring unknown option -fno-signed-zeros
3991     # 10148: ignoring unknown option -Wno-parentheses
3992     # 10156: ignoring option '-W'; no argument required
3993     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
3994     # 11030: Warning unknown option --as-needed
3995     # 10156: ignoring option '-export'; no argument required
3996     check_ldflags -wd10156,11030
3997     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3998     enable ebp_available
3999     if enabled x86_32; then
4000         icc_version=$($cc -dumpversion)
4001         test ${icc_version%%.*} -ge 11 &&
4002             check_cflags -falign-stack=maintain-16-byte ||
4003             disable aligned_stack
4004     fi
4005 elif enabled ccc; then
4006     # disable some annoying warnings
4007     add_cflags -msg_disable bitnotint
4008     add_cflags -msg_disable mixfuncvoid
4009     add_cflags -msg_disable nonstandcast
4010     add_cflags -msg_disable unsupieee
4011 elif enabled gcc; then
4012     check_optflags -fno-tree-vectorize
4013     check_cflags -Werror=implicit-function-declaration
4014     check_cflags -Werror=missing-prototypes
4015     check_cflags -Werror=return-type
4016     check_cflags -Werror=declaration-after-statement
4017     check_cflags -Werror=vla
4018     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4019 elif enabled llvm_gcc; then
4020     check_cflags -mllvm -stack-alignment=16
4021 elif enabled clang; then
4022     check_cflags -mllvm -stack-alignment=16
4023     check_cflags -Qunused-arguments
4024     check_cflags -Werror=implicit-function-declaration
4025     check_cflags -Werror=missing-prototypes
4026     check_cflags -Werror=return-type
4027 elif enabled cparser; then
4028     add_cflags -Wno-missing-variable-declarations
4029     add_cflags -Wno-empty-statement
4030 elif enabled armcc; then
4031     # 2523: use of inline assembler is deprecated
4032     add_cflags -W${armcc_opt},--diag_suppress=2523
4033     add_cflags -W${armcc_opt},--diag_suppress=1207
4034     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4035     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4036     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4037     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4038 elif enabled tms470; then
4039     add_cflags -pds=824 -pds=837
4040 elif enabled pathscale; then
4041     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4042 elif enabled_any msvc icl; then
4043     enabled x86_32 && disable aligned_stack
4044     enabled_all x86_32 debug && add_cflags -Oy-
4045     enabled debug && add_ldflags -debug
4046     enable pragma_deprecated
4047     if enabled icl; then
4048         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4049         # (correctly) on icl 13.x.
4050         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4051             add_cflags -Qansi-alias
4052         # icl will pass the inline asm tests but inline asm is currently
4053         # not supported (build will fail)
4054         disable inline_asm
4055     fi
4056 fi
4057
4058 case $target_os in
4059     osf1)
4060         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4061     ;;
4062     plan9)
4063         add_cppflags -Dmain=plan9_main
4064     ;;
4065 esac
4066
4067 enabled_any $THREADS_LIST      && enable threads
4068 enabled_any $ATOMICS_LIST      && enable atomics_native
4069
4070 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4071
4072 check_deps $CONFIG_LIST       \
4073            $CONFIG_EXTRA      \
4074            $HAVE_LIST         \
4075            $ALL_COMPONENTS    \
4076
4077 ! enabled_any memalign posix_memalign aligned_malloc &&
4078     enabled_any $need_memalign && enable memalign_hack
4079
4080 echo "install prefix            $prefix"
4081 echo "source path               $source_path"
4082 echo "C compiler                $cc"
4083 echo "ARCH                      $arch ($cpu)"
4084 if test "$build_suffix" != ""; then
4085     echo "build suffix              $build_suffix"
4086 fi
4087 if test "$extra_version" != ""; then
4088     echo "version string suffix     $extra_version"
4089 fi
4090 echo "big-endian                ${bigendian-no}"
4091 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4092 if enabled x86; then
4093     echo "${yasmexe}                      ${yasm-no}"
4094     echo "MMX enabled               ${mmx-no}"
4095     echo "MMXEXT enabled            ${mmxext-no}"
4096     echo "3DNow! enabled            ${amd3dnow-no}"
4097     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4098     echo "SSE enabled               ${sse-no}"
4099     echo "SSSE3 enabled             ${ssse3-no}"
4100     echo "AVX enabled               ${avx-no}"
4101     echo "FMA4 enabled              ${fma4-no}"
4102     echo "i686 features enabled     ${i686-no}"
4103     echo "CMOV is fast              ${fast_cmov-no}"
4104     echo "EBX available             ${ebx_available-no}"
4105     echo "EBP available             ${ebp_available-no}"
4106 fi
4107 if enabled arm; then
4108     echo "ARMv5TE enabled           ${armv5te-no}"
4109     echo "ARMv6 enabled             ${armv6-no}"
4110     echo "ARMv6T2 enabled           ${armv6t2-no}"
4111     echo "VFP enabled               ${vfp-no}"
4112     echo "NEON enabled              ${neon-no}"
4113 fi
4114 if enabled ppc; then
4115     echo "AltiVec enabled           ${altivec-no}"
4116     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4117     echo "dcbzl available           ${dcbzl-no}"
4118 fi
4119 if enabled sparc; then
4120     echo "VIS enabled               ${vis-no}"
4121 fi
4122 echo "debug symbols             ${debug-no}"
4123 echo "optimize for size         ${small-no}"
4124 echo "optimizations             ${optimizations-no}"
4125 echo "static                    ${static-no}"
4126 echo "shared                    ${shared-no}"
4127 echo "new filter support        ${avfilter-no}"
4128 echo "network support           ${network-no}"
4129 echo "threading support         ${thread_type-no}"
4130 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4131 echo "SDL support               ${sdl-no}"
4132 test -n "$random_seed" &&
4133     echo "random seed               ${random_seed}"
4134 echo
4135
4136 echo "External libraries:"
4137 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4138 echo
4139
4140 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4141     echo "Enabled ${type}s:"
4142     eval list=\$$(toupper $type)_LIST
4143     print_enabled '_*' $list | print_3_columns
4144     echo
4145 done
4146
4147 license="LGPL version 2.1 or later"
4148 if enabled nonfree; then
4149     license="nonfree and unredistributable"
4150 elif enabled gplv3; then
4151     license="GPL version 3 or later"
4152 elif enabled lgplv3; then
4153     license="LGPL version 3 or later"
4154 elif enabled gpl; then
4155     license="GPL version 2 or later"
4156 fi
4157
4158 echo "License: $license"
4159
4160 echo "Creating config.mak and config.h..."
4161
4162 test -e Makefile || $ln_s "$source_path/Makefile" .
4163
4164 config_files="$TMPH config.mak"
4165
4166 cat > config.mak <<EOF
4167 # Automatically generated by configure - do not modify!
4168 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4169 prefix=$prefix
4170 LIBDIR=\$(DESTDIR)$libdir
4171 SHLIBDIR=\$(DESTDIR)$shlibdir
4172 INCDIR=\$(DESTDIR)$incdir
4173 BINDIR=\$(DESTDIR)$bindir
4174 DATADIR=\$(DESTDIR)$datadir
4175 DOCDIR=\$(DESTDIR)$docdir
4176 MANDIR=\$(DESTDIR)$mandir
4177 SRC_PATH=$source_path
4178 CC_IDENT=$cc_ident
4179 ARCH=$arch
4180 CC=$cc
4181 AS=$as
4182 LD=$ld
4183 DEPCC=$dep_cc
4184 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4185 DEPAS=$as
4186 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4187 YASM=$yasmexe
4188 DEPYASM=$yasmexe
4189 AR=$ar
4190 ARFLAGS=$arflags
4191 AR_O=$ar_o
4192 RANLIB=$ranlib
4193 STRIP=$strip
4194 LN_S=$ln_s
4195 CPPFLAGS=$CPPFLAGS
4196 CFLAGS=$CFLAGS
4197 ASFLAGS=$ASFLAGS
4198 AS_C=$AS_C
4199 AS_O=$AS_O
4200 CC_C=$CC_C
4201 CC_E=$CC_E
4202 CC_O=$CC_O
4203 LD_O=$LD_O
4204 LD_LIB=$LD_LIB
4205 LD_PATH=$LD_PATH
4206 DLLTOOL=$dlltool
4207 LDFLAGS=$LDFLAGS
4208 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4209 YASMFLAGS=$YASMFLAGS
4210 BUILDSUF=$build_suffix
4211 FULLNAME=$FULLNAME
4212 LIBPREF=$LIBPREF
4213 LIBSUF=$LIBSUF
4214 LIBNAME=$LIBNAME
4215 SLIBPREF=$SLIBPREF
4216 SLIBSUF=$SLIBSUF
4217 EXESUF=$EXESUF
4218 EXTRA_VERSION=$extra_version
4219 CCDEP=$CCDEP
4220 CCDEP_FLAGS=$CCDEP_FLAGS
4221 ASDEP=$ASDEP
4222 ASDEP_FLAGS=$ASDEP_FLAGS
4223 CC_DEPFLAGS=$CC_DEPFLAGS
4224 AS_DEPFLAGS=$AS_DEPFLAGS
4225 HOSTCC=$host_cc
4226 HOSTLD=$host_ld
4227 HOSTCFLAGS=$host_cflags
4228 HOSTCPPFLAGS=$host_cppflags
4229 HOSTEXESUF=$HOSTEXESUF
4230 HOSTLDFLAGS=$host_ldflags
4231 HOSTLIBS=$host_libs
4232 DEPHOSTCC=$host_cc
4233 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4234 HOSTCCDEP=$HOSTCCDEP
4235 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4236 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4237 HOSTCC_C=$HOSTCC_C
4238 HOSTCC_O=$HOSTCC_O
4239 HOSTLD_O=$HOSTLD_O
4240 TARGET_EXEC=$target_exec $target_exec_args
4241 TARGET_PATH=$target_path
4242 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4243 LIBS-avplay=$sdl_libs
4244 CFLAGS-avplay=$sdl_cflags
4245 ZLIB=$($ldflags_filter -lz)
4246 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4247 EXTRALIBS=$extralibs
4248 COMPAT_OBJS=$compat_objs
4249 EXEOBJS=$exeobjs
4250 INSTALL=install
4251 LIBTARGET=${LIBTARGET}
4252 SLIBNAME=${SLIBNAME}
4253 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4254 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4255 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4256 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4257 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4258 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4259 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4260 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4261 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4262 EOF
4263
4264 get_version(){
4265     lcname=lib${1}
4266     name=$(toupper $lcname)
4267     file=$source_path/$lcname/version.h
4268     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4269     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4270     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4271     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4272     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4273 }
4274
4275 map 'get_version $v' $LIBRARY_LIST
4276
4277 cat > $TMPH <<EOF
4278 /* Automatically generated by configure - do not modify! */
4279 #ifndef LIBAV_CONFIG_H
4280 #define LIBAV_CONFIG_H
4281 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4282 #define LIBAV_LICENSE "$(c_escape $license)"
4283 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4284 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4285 #define restrict $_restrict
4286 #define EXTERN_PREFIX "${extern_prefix}"
4287 #define EXTERN_ASM ${extern_prefix}
4288 #define SLIBSUF "$SLIBSUF"
4289 EOF
4290
4291 test -n "$malloc_prefix" &&
4292     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4293
4294 if enabled yasm; then
4295     append config_files $TMPASM
4296     printf '' >$TMPASM
4297 fi
4298
4299 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4300
4301 print_config ARCH_   "$config_files" $ARCH_LIST
4302 print_config HAVE_   "$config_files" $HAVE_LIST
4303 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4304                                      $CONFIG_EXTRA      \
4305                                      $ALL_COMPONENTS    \
4306
4307 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4308
4309 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4310 cp_if_changed $TMPH config.h
4311 touch .config
4312
4313 enabled yasm && cp_if_changed $TMPASM config.asm
4314
4315 cat > $TMPH <<EOF
4316 /* Generated by ffconf */
4317 #ifndef AVUTIL_AVCONFIG_H
4318 #define AVUTIL_AVCONFIG_H
4319 EOF
4320
4321 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4322
4323 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4324
4325 cp_if_changed $TMPH libavutil/avconfig.h
4326
4327 test -n "$WARNINGS" && printf "\n$WARNINGS"
4328
4329 # build pkg-config files
4330
4331 pkgconfig_generate(){
4332     name=$1
4333     shortname=${name#lib}${build_suffix}
4334     comment=$2
4335     version=$3
4336     libs=$4
4337     requires=$5
4338     enabled ${name#lib} || return 0
4339     mkdir -p $name
4340     cat <<EOF > $name/$name.pc
4341 prefix=$prefix
4342 exec_prefix=\${prefix}
4343 libdir=$libdir
4344 includedir=$incdir
4345
4346 Name: $name
4347 Description: $comment
4348 Version: $version
4349 Requires: $(enabled shared || echo $requires)
4350 Requires.private: $(enabled shared && echo $requires)
4351 Conflicts:
4352 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4353 Libs.private: $(enabled shared && echo $libs)
4354 Cflags: -I\${includedir}
4355 EOF
4356     cat <<EOF > $name/$name-uninstalled.pc
4357 prefix=
4358 exec_prefix=
4359 libdir=\${pcfiledir}
4360 includedir=${source_path}
4361
4362 Name: $name
4363 Description: $comment
4364 Version: $version
4365 Requires: $requires
4366 Conflicts:
4367 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4368 Cflags: -I\${includedir}
4369 EOF
4370 }
4371
4372 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4373 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4374 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4375 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4376
4377 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4378 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4379 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4380 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4381 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4382 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4383 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"