configure: Set default HOSTCFLAGS/HOSTCPPFLAGS after compiler detection
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105
106 Program options:
107   --disable-programs       do not build command line programs
108   --disable-avconv         disable avconv build
109   --disable-avplay         disable avplay build
110   --disable-avprobe        disable avprobe build
111   --disable-avserver       disable avserver build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-avdevice       disable libavdevice build
116   --disable-avcodec        disable libavcodec build
117   --disable-avformat       disable libavformat build
118   --disable-avutil         disable libavutil build
119   --disable-swscale        disable libswscale build
120   --disable-avfilter       disable video filter support [no]
121   --disable-avresample     disable libavresample build [no]
122   --disable-pthreads       disable pthreads [auto]
123   --disable-w32threads     disable Win32 threads [auto]
124   --disable-network        disable network support [no]
125   --disable-dct            disable DCT code
126   --disable-error-resilience disable error resilience code
127   --disable-lsp            disable LSP code
128   --disable-lzo            disable LZO decoder code
129   --disable-mdct           disable MDCT code
130   --disable-rdft           disable RDFT code
131   --disable-fft            disable FFT code
132
133 Hardware accelerators:
134   --enable-dxva2           enable DXVA2 code
135   --enable-vaapi           enable VAAPI code
136   --enable-vda             enable VDA code
137   --enable-vdpau           enable VDPAU code
138
139 Individual component options:
140   --disable-everything     disable all components listed below
141   --disable-encoder=NAME   disable encoder NAME
142   --enable-encoder=NAME    enable encoder NAME
143   --disable-encoders       disable all encoders
144   --disable-decoder=NAME   disable decoder NAME
145   --enable-decoder=NAME    enable decoder NAME
146   --disable-decoders       disable all decoders
147   --disable-hwaccel=NAME   disable hwaccel NAME
148   --enable-hwaccel=NAME    enable hwaccel NAME
149   --disable-hwaccels       disable all hwaccels
150   --disable-muxer=NAME     disable muxer NAME
151   --enable-muxer=NAME      enable muxer NAME
152   --disable-muxers         disable all muxers
153   --disable-demuxer=NAME   disable demuxer NAME
154   --enable-demuxer=NAME    enable demuxer NAME
155   --disable-demuxers       disable all demuxers
156   --enable-parser=NAME     enable parser NAME
157   --disable-parser=NAME    disable parser NAME
158   --disable-parsers        disable all parsers
159   --enable-bsf=NAME        enable bitstream filter NAME
160   --disable-bsf=NAME       disable bitstream filter NAME
161   --disable-bsfs           disable all bitstream filters
162   --enable-protocol=NAME   enable protocol NAME
163   --disable-protocol=NAME  disable protocol NAME
164   --disable-protocols      disable all protocols
165   --enable-indev=NAME      enable input device NAME
166   --disable-indev=NAME     disable input device NAME
167   --disable-indevs         disable input devices
168   --enable-outdev=NAME     enable output device NAME
169   --disable-outdev=NAME    disable output device NAME
170   --disable-outdevs        disable output devices
171   --disable-devices        disable all devices
172   --enable-filter=NAME     enable filter NAME
173   --disable-filter=NAME    disable filter NAME
174   --disable-filters        disable all filters
175
176 External library support:
177   --enable-avisynth        enable reading of AviSynth script files [no]
178   --enable-bzlib           enable bzlib [autodetect]
179   --enable-frei0r          enable frei0r video filtering
180   --enable-gnutls          enable gnutls [no]
181   --enable-libcdio         enable audio CD grabbing with libcdio
182   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
183                            and libraw1394 [no]
184   --enable-libfaac         enable AAC encoding via libfaac [no]
185   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
186   --enable-libfreetype     enable libfreetype [no]
187   --enable-libgsm          enable GSM de/encoding via libgsm [no]
188   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
189   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
190   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
191   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
192   --enable-libopencv       enable video filtering via libopencv [no]
193   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
194   --enable-libopus         enable Opus decoding via libopus [no]
195   --enable-libpulse        enable Pulseaudio input via libpulse [no]
196   --enable-librtmp         enable RTMP[E] support via librtmp [no]
197   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
198   --enable-libspeex        enable Speex de/encoding via libspeex [no]
199   --enable-libtheora       enable Theora encoding via libtheora [no]
200   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
201   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
202   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
203   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
204   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
205   --enable-libwebp         enable WebP encoding via libwebp [no]
206   --enable-libx264         enable H.264 encoding via x264 [no]
207   --enable-libxavs         enable AVS encoding via xavs [no]
208   --enable-libxvid         enable Xvid encoding via xvidcore,
209                            native MPEG-4/Xvid encoder exists [no]
210   --enable-openssl         enable openssl [no]
211   --enable-x11grab         enable X11 grabbing [no]
212   --enable-zlib            enable zlib [autodetect]
213
214 Advanced options (experts only):
215   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
216   --enable-cross-compile   assume a cross-compiler is used
217   --sysroot=PATH           root of cross-build tree
218   --sysinclude=PATH        location of cross-build system headers
219   --target-os=OS           compiler targets OS [$target_os]
220   --target-exec=CMD        command to run executables on target
221   --target-path=DIR        path to view of build directory on target
222   --target-samples=DIR     path to samples directory on target
223   --toolchain=NAME         set tool defaults according to NAME
224   --nm=NM                  use nm tool
225   --ar=AR                  use archive tool AR [$ar_default]
226   --as=AS                  use assembler AS [$as_default]
227   --cc=CC                  use C compiler CC [$cc_default]
228   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
229   --ld=LD                  use linker LD
230   --host-cc=HOSTCC         use host C compiler HOSTCC
231   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
232   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
233   --host-ld=HOSTLD         use host linker HOSTLD
234   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
235   --host-libs=HLIBS        use libs HLIBS when linking for host
236   --host-os=OS             compiler host OS [$target_os]
237   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
238   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
239   --extra-libs=ELIBS       add ELIBS [$ELIBS]
240   --extra-version=STRING   version string suffix []
241   --optflags=OPTFLAGS      override optimization-related compiler flags
242   --build-suffix=SUFFIX    library name suffix []
243   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
244   --arch=ARCH              select architecture [$arch]
245   --cpu=CPU                select the minimum required CPU (affects
246                            instruction selection, may crash on older CPUs)
247   --enable-pic             build position-independent code
248   --enable-sram            allow use of on-chip SRAM
249   --enable-thumb           compile for Thumb instruction set
250   --disable-symver         disable symbol versioning
251   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
252   --disable-safe-bitstream-reader
253                            disable buffer boundary checking in bitreaders
254                            (faster, but may crash)
255   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
256   --enable-lto             use link-time optimization
257
258 Optimization options (experts only):
259   --disable-asm            disable all assembler optimizations
260   --disable-altivec        disable AltiVec optimizations
261   --disable-amd3dnow       disable 3DNow! optimizations
262   --disable-amd3dnowext    disable 3DNow! extended optimizations
263   --disable-mmx            disable MMX optimizations
264   --disable-mmxext         disable MMXEXT optimizations
265   --disable-sse            disable SSE optimizations
266   --disable-sse2           disable SSE2 optimizations
267   --disable-sse3           disable SSE3 optimizations
268   --disable-ssse3          disable SSSE3 optimizations
269   --disable-sse4           disable SSE4 optimizations
270   --disable-sse42          disable SSE4.2 optimizations
271   --disable-avx            disable AVX optimizations
272   --disable-fma4           disable FMA4 optimizations
273   --disable-avx2           disable AVX2 optimizations
274   --disable-armv5te        disable armv5te optimizations
275   --disable-armv6          disable armv6 optimizations
276   --disable-armv6t2        disable armv6t2 optimizations
277   --disable-vfp            disable VFP optimizations
278   --disable-neon           disable NEON optimizations
279   --disable-vis            disable VIS optimizations
280   --disable-inline-asm     disable use of inline assembler
281   --disable-yasm           disable use of yasm assembler
282
283 Developer options (useful when working on Libav itself):
284   --disable-debug          disable debugging symbols
285   --enable-debug=LEVEL     set the debug level [$debuglevel]
286   --disable-optimizations  disable compiler optimizations
287   --enable-extra-warnings  enable more compiler warnings
288   --samples=PATH           location of test samples for FATE, if not set use
289                            \$LIBAV_SAMPLES at make invocation time.
290   --enable-neon-clobber-test check NEON registers for clobbering (should be
291                            used only for debugging purposes)
292   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
293                            should be used only for debugging purposes)
294   --enable-random          randomly enable/disable components
295   --disable-random
296   --enable-random=LIST     randomly enable/disable specific components or
297   --disable-random=LIST    component groups. LIST is a comma-separated list
298                            of NAME[:PROB] entries where NAME is a component
299                            (group) and PROB the probability associated with
300                            NAME (default 0.5).
301   --random-seed=VALUE      seed value for --enable/disable-random
302
303 NOTE: Object files are built at the place where configure is launched.
304 EOF
305   exit 0
306 }
307
308 quotes='""'
309
310 log(){
311     echo "$@" >> $logfile
312 }
313
314 log_file(){
315     log BEGIN $1
316     pr -n -t $1 >> $logfile
317     log END $1
318 }
319
320 echolog(){
321     log "$@"
322     echo "$@"
323 }
324
325 warn(){
326     log "WARNING: $*"
327     WARNINGS="${WARNINGS}WARNING: $*\n"
328 }
329
330 die(){
331     echolog "$@"
332     cat <<EOF
333
334 If you think configure made a mistake, make sure you are using the latest
335 version from Git.  If the latest version fails, report the problem to the
336 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
337 EOF
338     if disabled logging; then
339         cat <<EOF
340 Rerun configure with logging enabled (do not use --disable-logging), and
341 include the log this produces with your report.
342 EOF
343     else
344         cat <<EOF
345 Include the log file "$logfile" produced by configure as this will help
346 solving the problem.
347 EOF
348     fi
349     exit 1
350 }
351
352 # Avoid locale weirdness, besides we really just want to translate ASCII.
353 toupper(){
354     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
355 }
356
357 tolower(){
358     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
359 }
360
361 c_escape(){
362     echo "$*" | sed 's/["\\]/\\\0/g'
363 }
364
365 sh_quote(){
366     v=$(echo "$1" | sed "s/'/'\\\\''/g")
367     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
368     echo "$v"
369 }
370
371 cleanws(){
372     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
373 }
374
375 filter(){
376     pat=$1
377     shift
378     for v; do
379         eval "case $v in $pat) echo $v ;; esac"
380     done
381 }
382
383 filter_out(){
384     pat=$1
385     shift
386     for v; do
387         eval "case $v in $pat) ;; *) echo $v ;; esac"
388     done
389 }
390
391 map(){
392     m=$1
393     shift
394     for v; do eval $m; done
395 }
396
397 add_suffix(){
398     suffix=$1
399     shift
400     for v; do echo ${v}${suffix}; done
401 }
402
403 set_all(){
404     value=$1
405     shift
406     for var in $*; do
407         eval $var=$value
408     done
409 }
410
411 set_weak(){
412     value=$1
413     shift
414     for var; do
415         eval : \${$var:=$value}
416     done
417 }
418
419 sanitize_var_name(){
420     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
421 }
422
423 set_safe(){
424     var=$1
425     shift
426     eval $(sanitize_var_name "$var")='$*'
427 }
428
429 get_safe(){
430     eval echo \$$(sanitize_var_name "$1")
431 }
432
433 pushvar(){
434     for pvar in $*; do
435         eval level=\${${pvar}_level:=0}
436         eval ${pvar}_${level}="\$$pvar"
437         eval ${pvar}_level=$(($level+1))
438     done
439 }
440
441 popvar(){
442     for pvar in $*; do
443         eval level=\${${pvar}_level:-0}
444         test $level = 0 && continue
445         eval level=$(($level-1))
446         eval $pvar="\${${pvar}_${level}}"
447         eval ${pvar}_level=$level
448         eval unset ${pvar}_${level}
449     done
450 }
451
452 enable(){
453     set_all yes $*
454 }
455
456 disable(){
457     set_all no $*
458 }
459
460 enable_weak(){
461     set_weak yes $*
462 }
463
464 disable_weak(){
465     set_weak no $*
466 }
467
468 enable_safe(){
469     for var; do
470         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
471     done
472 }
473
474 disable_safe(){
475     for var; do
476         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
477     done
478 }
479
480 do_enable_deep(){
481     for var; do
482         enabled $var && continue
483         eval sel="\$${var}_select"
484         eval sgs="\$${var}_suggest"
485         pushvar var sgs
486         enable_deep $sel
487         popvar sgs
488         enable_deep_weak $sgs
489         popvar var
490     done
491 }
492
493 enable_deep(){
494     do_enable_deep $*
495     enable $*
496 }
497
498 enable_deep_weak(){
499     for var; do
500         disabled $var && continue
501         pushvar var
502         do_enable_deep $var
503         popvar var
504         enable_weak $var
505     done
506 }
507
508 enabled(){
509     test "${1#!}" = "$1" && op== || op=!=
510     eval test "x\$${1#!}" $op "xyes"
511 }
512
513 disabled(){
514     test "${1#!}" = "$1" && op== || op=!=
515     eval test "x\$${1#!}" $op "xno"
516 }
517
518 enabled_all(){
519     for opt; do
520         enabled $opt || return 1
521     done
522 }
523
524 disabled_all(){
525     for opt; do
526         disabled $opt || return 1
527     done
528 }
529
530 enabled_any(){
531     for opt; do
532         enabled $opt && return 0
533     done
534 }
535
536 disabled_any(){
537     for opt; do
538         disabled $opt && return 0
539     done
540     return 1
541 }
542
543 set_default(){
544     for opt; do
545         eval : \${$opt:=\$${opt}_default}
546     done
547 }
548
549 is_in(){
550     value=$1
551     shift
552     for var in $*; do
553         [ $var = $value ] && return 0
554     done
555     return 1
556 }
557
558 do_check_deps(){
559     for cfg; do
560         cfg="${cfg#!}"
561         enabled ${cfg}_checking && die "Circular dependency for $cfg."
562         disabled ${cfg}_checking && continue
563         enable ${cfg}_checking
564         append allopts $cfg
565
566         eval dep_all="\$${cfg}_deps"
567         eval dep_any="\$${cfg}_deps_any"
568         eval dep_sel="\$${cfg}_select"
569         eval dep_sgs="\$${cfg}_suggest"
570         eval dep_ifa="\$${cfg}_if"
571         eval dep_ifn="\$${cfg}_if_any"
572
573         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
574         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
575         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
576
577         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
578         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
579         enabled_all  $dep_all || disable $cfg
580         enabled_any  $dep_any || disable $cfg
581         disabled_any $dep_sel && disable $cfg
582
583         if enabled $cfg; then
584             enable_deep $dep_sel
585             enable_deep_weak $dep_sgs
586         fi
587
588         disable ${cfg}_checking
589     done
590 }
591
592 check_deps(){
593     unset allopts
594
595     do_check_deps "$@"
596
597     for cfg in $allopts; do
598         enabled $cfg || continue
599         eval dep_extralibs="\$${cfg}_extralibs"
600         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
601     done
602 }
603
604 print_config(){
605     pfx=$1
606     files=$2
607     shift 2
608     map 'eval echo "$v \${$v:-no}"' "$@" |
609     awk "BEGIN { split(\"$files\", files) }
610         {
611             c = \"$pfx\" toupper(\$1);
612             v = \$2;
613             sub(/yes/, 1, v);
614             sub(/no/,  0, v);
615             for (f in files) {
616                 file = files[f];
617                 if (file ~ /\\.h\$/) {
618                     printf(\"#define %s %d\\n\", c, v) >>file;
619                 } else if (file ~ /\\.asm\$/) {
620                     printf(\"%%define %s %d\\n\", c, v) >>file;
621                 } else if (file ~ /\\.mak\$/) {
622                     n = -v ? \"\" : \"!\";
623                     printf(\"%s%s=yes\\n\", n, c) >>file;
624                 }
625             }
626         }"
627 }
628
629 print_enabled(){
630     suf=$1
631     shift
632     for v; do
633         enabled $v && printf "%s\n" ${v%$suf};
634     done
635 }
636
637 append(){
638     var=$1
639     shift
640     eval "$var=\"\$$var $*\""
641 }
642
643 prepend(){
644     var=$1
645     shift
646     eval "$var=\"$* \$$var\""
647 }
648
649 add_cppflags(){
650     append CPPFLAGS "$@"
651 }
652
653 add_cflags(){
654     append CFLAGS $($cflags_filter "$@")
655 }
656
657 add_asflags(){
658     append ASFLAGS $($asflags_filter "$@")
659 }
660
661 add_ldflags(){
662     append LDFLAGS $($ldflags_filter "$@")
663 }
664
665 add_stripflags(){
666     append STRIPFLAGS "$@"
667 }
668
669 add_extralibs(){
670     prepend extralibs $($ldflags_filter "$@")
671 }
672
673 add_host_cppflags(){
674     append host_cppflags "$@"
675 }
676
677 add_host_cflags(){
678     append host_cflags $($host_cflags_filter "$@")
679 }
680
681 add_host_ldflags(){
682     append host_ldflags $($host_ldflags_filter "$@")
683 }
684
685 add_compat(){
686     append compat_objs $1
687     shift
688     map 'add_cppflags -D$v' "$@"
689 }
690
691 check_cmd(){
692     log "$@"
693     "$@" >> $logfile 2>&1
694 }
695
696 cc_o(){
697     eval printf '%s\\n' $CC_O
698 }
699
700 cc_e(){
701     eval printf '%s\\n' $CC_E
702 }
703
704 check_cc(){
705     log check_cc "$@"
706     cat > $TMPC
707     log_file $TMPC
708     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
709 }
710
711 check_cpp(){
712     log check_cpp "$@"
713     cat > $TMPC
714     log_file $TMPC
715     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
716 }
717
718 as_o(){
719     eval printf '%s\\n' $AS_O
720 }
721
722 check_as(){
723     log check_as "$@"
724     cat > $TMPS
725     log_file $TMPS
726     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
727 }
728
729 check_inline_asm(){
730     log check_inline_asm "$@"
731     name="$1"
732     code="$2"
733     shift 2
734     disable $name
735     check_cc "$@" <<EOF && enable $name
736 void foo(void){ __asm__ volatile($code); }
737 EOF
738 }
739
740 check_insn(){
741     log check_insn "$@"
742     check_inline_asm ${1}_inline "\"$2\""
743     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
744 }
745
746 check_yasm(){
747     log check_yasm "$@"
748     echo "$1" > $TMPS
749     log_file $TMPS
750     shift 1
751     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
752 }
753
754 ld_o(){
755     eval printf '%s\\n' $LD_O
756 }
757
758 check_ld(){
759     log check_ld "$@"
760     flags=$(filter_out '-l*' "$@")
761     libs=$(filter '-l*' "$@")
762     check_cc $($cflags_filter $flags) || return
763     flags=$($ldflags_filter $flags)
764     libs=$($ldflags_filter $libs)
765     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
766 }
767
768 print_include(){
769     hdr=$1
770     test "${hdr%.h}" = "${hdr}" &&
771         echo "#include $hdr"    ||
772         echo "#include <$hdr>"
773 }
774
775 check_code(){
776     log check_code "$@"
777     check=$1
778     headers=$2
779     code=$3
780     shift 3
781     {
782         for hdr in $headers; do
783             print_include $hdr
784         done
785         echo "int main(void) { $code; return 0; }"
786     } | check_$check "$@"
787 }
788
789 check_cppflags(){
790     log check_cppflags "$@"
791     check_cc "$@" <<EOF && append CPPFLAGS "$@"
792 int x;
793 EOF
794 }
795
796 test_cflags(){
797     log test_cflags "$@"
798     set -- $($cflags_filter "$@")
799     check_cc "$@" <<EOF
800 int x;
801 EOF
802 }
803
804 check_cflags(){
805     log check_cflags "$@"
806     test_cflags "$@" && add_cflags "$@"
807 }
808
809 test_ldflags(){
810     log test_ldflags "$@"
811     check_ld "$@" <<EOF
812 int main(void){ return 0; }
813 EOF
814 }
815
816 check_ldflags(){
817     log check_ldflags "$@"
818     test_ldflags "$@" && add_ldflags "$@"
819 }
820
821 test_stripflags(){
822     log test_stripflags "$@"
823     # call check_cc to get a fresh TMPO
824     check_cc <<EOF
825 int main(void) { return 0; }
826 EOF
827     check_cmd $strip $STRIPFLAGS "$@" $TMPO
828 }
829
830 check_stripflags(){
831     log check_stripflags "$@"
832     test_stripflags "$@" && add_stripflags "$@"
833 }
834
835 check_header(){
836     log check_header "$@"
837     header=$1
838     shift
839     disable_safe $header
840     check_cpp "$@" <<EOF && enable_safe $header
841 #include <$header>
842 int x;
843 EOF
844 }
845
846 check_func(){
847     log check_func "$@"
848     func=$1
849     shift
850     disable $func
851     check_ld "$@" <<EOF && enable $func
852 extern int $func();
853 int main(void){ $func(); }
854 EOF
855 }
856
857 check_mathfunc(){
858     log check_mathfunc "$@"
859     func=$1
860     narg=$2
861     shift 2
862     test $narg = 2 && args="f, g" || args="f"
863     disable $func
864     check_ld "$@" <<EOF && enable $func
865 #include <math.h>
866 float foo(float f, float g) { return $func($args); }
867 int main(void){ return 0; }
868 EOF
869 }
870
871 check_func_headers(){
872     log check_func_headers "$@"
873     headers=$1
874     funcs=$2
875     shift 2
876     {
877         for hdr in $headers; do
878             print_include $hdr
879         done
880         for func in $funcs; do
881             echo "long check_$func(void) { return (long) $func; }"
882         done
883         echo "int main(void) { return 0; }"
884     } | check_ld "$@" && enable $funcs && enable_safe $headers
885 }
886
887 check_cpp_condition(){
888     log check_cpp_condition "$@"
889     header=$1
890     condition=$2
891     shift 2
892     check_cpp "$@" <<EOF
893 #include <$header>
894 #if !($condition)
895 #error "unsatisfied condition: $condition"
896 #endif
897 EOF
898 }
899
900 check_lib(){
901     log check_lib "$@"
902     header="$1"
903     func="$2"
904     shift 2
905     check_header $header && check_func $func "$@" && add_extralibs "$@"
906 }
907
908 check_lib2(){
909     log check_lib2 "$@"
910     headers="$1"
911     funcs="$2"
912     shift 2
913     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
914 }
915
916 check_pkg_config(){
917     log check_pkg_config "$@"
918     pkg="$1"
919     headers="$2"
920     funcs="$3"
921     shift 3
922     check_cmd $pkg_config --exists --print-errors $pkg || return
923     pkg_cflags=$($pkg_config --cflags $pkg)
924     pkg_libs=$($pkg_config --libs $pkg)
925     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
926         set_safe ${pkg}_cflags $pkg_cflags   &&
927         set_safe ${pkg}_libs   $pkg_libs
928 }
929
930 check_exec(){
931     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
932 }
933
934 check_exec_crash(){
935     code=$(cat)
936
937     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
938     # are safe but may not be available everywhere.  Thus we use
939     # raise(SIGTERM) instead.  The check is run in a subshell so we
940     # can redirect the "Terminated" message from the shell.  SIGBUS
941     # is not defined by standard C so it is used conditionally.
942
943     (check_exec "$@") >> $logfile 2>&1 <<EOF
944 #include <signal.h>
945 static void sighandler(int sig){
946     raise(SIGTERM);
947 }
948 int foo(void){
949     $code
950 }
951 int (*func_ptr)(void) = foo;
952 int main(void){
953     signal(SIGILL, sighandler);
954     signal(SIGFPE, sighandler);
955     signal(SIGSEGV, sighandler);
956 #ifdef SIGBUS
957     signal(SIGBUS, sighandler);
958 #endif
959     return func_ptr();
960 }
961 EOF
962 }
963
964 check_type(){
965     log check_type "$@"
966     headers=$1
967     type=$2
968     shift 2
969     disable_safe "$type"
970     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
971 }
972
973 check_struct(){
974     log check_struct "$@"
975     headers=$1
976     struct=$2
977     member=$3
978     shift 3
979     disable_safe "${struct}_${member}"
980     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
981         enable_safe "${struct}_${member}"
982 }
983
984 check_builtin(){
985     log check_builtin "$@"
986     name=$1
987     headers=$2
988     builtin=$3
989     shift 3
990     disable "$name"
991     check_code ld "$headers" "$builtin" "$@" && enable "$name"
992 }
993
994 require(){
995     name="$1"
996     header="$2"
997     func="$3"
998     shift 3
999     check_lib $header $func "$@" || die "ERROR: $name not found"
1000 }
1001
1002 require2(){
1003     name="$1"
1004     headers="$2"
1005     func="$3"
1006     shift 3
1007     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1008 }
1009
1010 require_pkg_config(){
1011     pkg="$1"
1012     check_pkg_config "$@" || die "ERROR: $pkg not found"
1013     add_cflags    $(get_safe ${pkg}_cflags)
1014     add_extralibs $(get_safe ${pkg}_libs)
1015 }
1016
1017 hostcc_e(){
1018     eval printf '%s\\n' $HOSTCC_E
1019 }
1020
1021 hostcc_o(){
1022     eval printf '%s\\n' $HOSTCC_O
1023 }
1024
1025 check_host_cc(){
1026     log check_host_cc "$@"
1027     cat > $TMPC
1028     log_file $TMPC
1029     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1030 }
1031
1032 check_host_cpp(){
1033     log check_host_cpp "$@"
1034     cat > $TMPC
1035     log_file $TMPC
1036     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1037 }
1038
1039 check_host_cppflags(){
1040     log check_host_cppflags "$@"
1041     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1042 int x;
1043 EOF
1044 }
1045
1046 check_host_cflags(){
1047     log check_host_cflags "$@"
1048     set -- $($host_cflags_filter "$@")
1049     check_host_cc "$@" <<EOF && append host_cflags "$@"
1050 int x;
1051 EOF
1052 }
1053
1054 check_host_cpp_condition(){
1055     log check_host_cpp_condition "$@"
1056     header=$1
1057     condition=$2
1058     shift 2
1059     check_host_cpp "$@" <<EOF
1060 #include <$header>
1061 #if !($condition)
1062 #error "unsatisfied condition: $condition"
1063 #endif
1064 EOF
1065 }
1066
1067 apply(){
1068     file=$1
1069     shift
1070     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1071 }
1072
1073 cp_if_changed(){
1074     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1075     mkdir -p "$(dirname $2)"
1076     $cp_f "$1" "$2"
1077 }
1078
1079 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1080 # system-dependent things.
1081
1082 COMPONENT_LIST="
1083     bsfs
1084     decoders
1085     demuxers
1086     encoders
1087     filters
1088     hwaccels
1089     indevs
1090     muxers
1091     outdevs
1092     parsers
1093     protocols
1094 "
1095
1096 EXAMPLE_LIST="
1097     output_example
1098     transcode_aac_example
1099 "
1100
1101 EXTERNAL_LIBRARY_LIST="
1102     avisynth
1103     bzlib
1104     frei0r
1105     gnutls
1106     libcdio
1107     libdc1394
1108     libfaac
1109     libfdk_aac
1110     libfreetype
1111     libgsm
1112     libilbc
1113     libmp3lame
1114     libopencore_amrnb
1115     libopencore_amrwb
1116     libopencv
1117     libopenjpeg
1118     libopus
1119     libpulse
1120     librtmp
1121     libschroedinger
1122     libspeex
1123     libtheora
1124     libvo_aacenc
1125     libvo_amrwbenc
1126     libvorbis
1127     libvpx
1128     libwavpack
1129     libwebp
1130     libx264
1131     libxavs
1132     libxvid
1133     openssl
1134     x11grab
1135     zlib
1136 "
1137
1138 HWACCEL_LIST="
1139     dxva2
1140     vaapi
1141     vda
1142     vdpau
1143 "
1144 LIBRARY_LIST="
1145     avcodec
1146     avdevice
1147     avfilter
1148     avformat
1149     avresample
1150     avutil
1151     swscale
1152 "
1153
1154 PROGRAM_LIST="
1155     avconv
1156     avplay
1157     avprobe
1158     avserver
1159 "
1160
1161 CONFIG_LIST="
1162     $COMPONENT_LIST
1163     $EXAMPLE_LIST
1164     $EXTERNAL_LIBRARY_LIST
1165     $HWACCEL_LIST
1166     $LIBRARY_LIST
1167     $PROGRAM_LIST
1168     dct
1169     doc
1170     error_resilience
1171     fft
1172     gpl
1173     gray
1174     hardcoded_tables
1175     lsp
1176     lzo
1177     mdct
1178     memalign_hack
1179     neon_clobber_test
1180     network
1181     nonfree
1182     pod2man
1183     pic
1184     rdft
1185     runtime_cpudetect
1186     safe_bitstream_reader
1187     shared
1188     small
1189     sram
1190     static
1191     swscale_alpha
1192     texi2html
1193     thumb
1194     version3
1195     xmm_clobber_test
1196 "
1197
1198 THREADS_LIST='
1199     pthreads
1200     w32threads
1201 '
1202
1203 ATOMICS_LIST='
1204     atomics_gcc
1205     atomics_suncc
1206     atomics_win32
1207 '
1208
1209 ARCH_LIST='
1210     aarch64
1211     alpha
1212     arm
1213     avr32
1214     avr32_ap
1215     avr32_uc
1216     bfin
1217     ia64
1218     m68k
1219     mips
1220     mips64
1221     parisc
1222     ppc
1223     ppc64
1224     s390
1225     sh4
1226     sparc
1227     sparc64
1228     tilegx
1229     tilepro
1230     tomi
1231     x86
1232     x86_32
1233     x86_64
1234 '
1235
1236 ARCH_EXT_LIST_ARM='
1237     armv5te
1238     armv6
1239     armv6t2
1240     neon
1241     vfp
1242     vfpv3
1243 '
1244
1245 ARCH_EXT_LIST_X86='
1246     amd3dnow
1247     amd3dnowext
1248     avx
1249     avx2
1250     fma4
1251     i686
1252     mmx
1253     mmxext
1254     sse
1255     sse2
1256     sse3
1257     sse4
1258     sse42
1259     ssse3
1260 '
1261
1262 ARCH_EXT_LIST="
1263     $ARCH_EXT_LIST_ARM
1264     $ARCH_EXT_LIST_X86
1265     altivec
1266     ppc4xx
1267     vis
1268 "
1269
1270 HAVE_LIST_CMDLINE='
1271     inline_asm
1272     symver
1273     yasm
1274 '
1275
1276 HAVE_LIST_PUB='
1277     bigendian
1278     fast_unaligned
1279 '
1280
1281 MATH_FUNCS="
1282     atanf
1283     atan2f
1284     cbrtf
1285     cosf
1286     exp2
1287     exp2f
1288     expf
1289     isinf
1290     isnan
1291     ldexpf
1292     llrint
1293     llrintf
1294     log2
1295     log2f
1296     log10f
1297     lrint
1298     lrintf
1299     powf
1300     rint
1301     round
1302     roundf
1303     sinf
1304     trunc
1305     truncf
1306 "
1307
1308 HAVE_LIST="
1309     $ARCH_EXT_LIST
1310     $(add_suffix _external $ARCH_EXT_LIST)
1311     $(add_suffix _inline   $ARCH_EXT_LIST)
1312     $HAVE_LIST_CMDLINE
1313     $HAVE_LIST_PUB
1314     $THREADS_LIST
1315     $ATOMICS_LIST
1316     $MATH_FUNCS
1317     aligned_malloc
1318     aligned_stack
1319     alsa_asoundlib_h
1320     altivec_h
1321     arpa_inet_h
1322     asm_mod_q
1323     asm_mod_y
1324     atomic_cas_ptr
1325     atomics_native
1326     attribute_may_alias
1327     attribute_packed
1328     cdio_paranoia_h
1329     cdio_paranoia_paranoia_h
1330     closesocket
1331     CommandLineToArgvW
1332     cpunop
1333     CryptGenRandom
1334     dcbzl
1335     dev_bktr_ioctl_bt848_h
1336     dev_bktr_ioctl_meteor_h
1337     dev_ic_bt8xx_h
1338     dev_video_bktr_ioctl_bt848_h
1339     dev_video_meteor_ioctl_meteor_h
1340     direct_h
1341     dlfcn_h
1342     dlopen
1343     dos_paths
1344     dxva_h
1345     ebp_available
1346     ebx_available
1347     fast_64bit
1348     fast_clz
1349     fast_cmov
1350     fcntl
1351     fork
1352     getaddrinfo
1353     gethrtime
1354     getopt
1355     GetProcessAffinityMask
1356     GetProcessMemoryInfo
1357     GetProcessTimes
1358     GetSystemTimeAsFileTime
1359     getrusage
1360     getservbyport
1361     gettimeofday
1362     gnu_as
1363     gsm_h
1364     ibm_asm
1365     inet_aton
1366     io_h
1367     inline_asm_labels
1368     isatty
1369     jack_port_get_latency_range
1370     ldbrx
1371     libc_msvcrt
1372     libdc1394_1
1373     libdc1394_2
1374     local_aligned_16
1375     local_aligned_8
1376     localtime_r
1377     loongson
1378     machine_ioctl_bt848_h
1379     machine_ioctl_meteor_h
1380     machine_rw_barrier
1381     malloc_h
1382     MapViewOfFile
1383     memalign
1384     MemoryBarrier
1385     mkstemp
1386     mm_empty
1387     mmap
1388     mprotect
1389     nanosleep
1390     poll_h
1391     posix_memalign
1392     pragma_deprecated
1393     rdtsc
1394     sched_getaffinity
1395     sdl
1396     SetConsoleTextAttribute
1397     setmode
1398     setrlimit
1399     Sleep
1400     sndio_h
1401     socklen_t
1402     soundcard_h
1403     strerror_r
1404     strptime
1405     strtok_r
1406     struct_addrinfo
1407     struct_group_source_req
1408     struct_ip_mreq_source
1409     struct_ipv6_mreq
1410     struct_pollfd
1411     struct_rusage_ru_maxrss
1412     struct_sockaddr_in6
1413     struct_sockaddr_sa_len
1414     struct_sockaddr_storage
1415     struct_v4l2_frmivalenum_discrete
1416     symver_asm_label
1417     symver_gnu_asm
1418     sync_val_compare_and_swap
1419     sysconf
1420     sysctl
1421     sys_mman_h
1422     sys_param_h
1423     sys_resource_h
1424     sys_select_h
1425     sys_soundcard_h
1426     sys_time_h
1427     sys_un_h
1428     sys_videoio_h
1429     threads
1430     unistd_h
1431     usleep
1432     vdpau_x11
1433     vfp_args
1434     VirtualAlloc
1435     windows_h
1436     winsock2_h
1437     xform_asm
1438     xlib
1439     xmm_clobbers
1440 "
1441
1442 # options emitted with CONFIG_ prefix but not available on the command line
1443 CONFIG_EXTRA="
1444     aandcttables
1445     ac3dsp
1446     audio_frame_queue
1447     dsputil
1448     gcrypt
1449     golomb
1450     gplv3
1451     h263dsp
1452     h264chroma
1453     h264dsp
1454     h264pred
1455     h264qpel
1456     hpeldsp
1457     huffman
1458     intrax8
1459     lgplv3
1460     lpc
1461     mpegaudio
1462     mpegaudiodsp
1463     mpegvideo
1464     mpegvideoenc
1465     nettle
1466     rangecoder
1467     riffdec
1468     riffenc
1469     rtpdec
1470     rtpenc_chain
1471     sinewin
1472     videodsp
1473     vp3dsp
1474 "
1475
1476 CMDLINE_SELECT="
1477     $ARCH_EXT_LIST
1478     $CONFIG_LIST
1479     $HAVE_LIST_CMDLINE
1480     $THREADS_LIST
1481     asm
1482     cross_compile
1483     debug
1484     extra_warnings
1485     logging
1486     lto
1487     optimizations
1488 "
1489
1490 PATHS_LIST='
1491     bindir
1492     datadir
1493     docdir
1494     incdir
1495     libdir
1496     mandir
1497     prefix
1498     shlibdir
1499 '
1500
1501 CMDLINE_SET="
1502     $PATHS_LIST
1503     ar
1504     arch
1505     as
1506     build_suffix
1507     cc
1508     cpu
1509     cross_prefix
1510     dep_cc
1511     extra_version
1512     host_cc
1513     host_cflags
1514     host_ld
1515     host_ldflags
1516     host_libs
1517     host_os
1518     ld
1519     logfile
1520     malloc_prefix
1521     nm
1522     optflags
1523     pkg_config
1524     random_seed
1525     samples
1526     sysinclude
1527     sysroot
1528     target_exec
1529     target_os
1530     target_path
1531     target_samples
1532     toolchain
1533 "
1534
1535 CMDLINE_APPEND="
1536     extra_cflags
1537     host_cppflags
1538 "
1539
1540 # code dependency declarations
1541
1542 # architecture extensions
1543
1544 armv5te_deps="arm"
1545 armv6_deps="arm"
1546 armv6t2_deps="arm"
1547 neon_deps_any="aarch64 arm"
1548 vfp_deps_any="aarch64 arm"
1549 vfpv3_deps="vfp"
1550
1551 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1552
1553 altivec_deps="ppc"
1554 ppc4xx_deps="ppc"
1555
1556 vis_deps="sparc"
1557
1558 cpunop_deps="i686"
1559 x86_64_select="i686"
1560 x86_64_suggest="fast_cmov"
1561
1562 amd3dnow_deps="mmx"
1563 amd3dnowext_deps="amd3dnow"
1564 mmx_deps="x86"
1565 mmxext_deps="mmx"
1566 sse_deps="mmxext"
1567 sse2_deps="sse"
1568 sse3_deps="sse2"
1569 ssse3_deps="sse3"
1570 sse4_deps="ssse3"
1571 sse42_deps="sse4"
1572 avx_deps="sse42"
1573 fma4_deps="avx"
1574 avx2_deps="avx"
1575
1576 mmx_external_deps="yasm"
1577 mmx_inline_deps="inline_asm"
1578 mmx_suggest="mmx_external mmx_inline"
1579
1580 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1581     eval dep=\$${ext}_deps
1582     eval ${ext}_external_deps='"${dep}_external"'
1583     eval ${ext}_inline_deps='"${dep}_inline"'
1584     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1585 done
1586
1587 aligned_stack_if_any="aarch64 ppc x86"
1588 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1589 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1590 fast_unaligned_if_any="aarch64 ppc x86"
1591
1592 need_memalign="altivec neon sse"
1593
1594 # system capabilities
1595 log2_deps="!libc_msvcrt"
1596
1597 symver_if_any="symver_asm_label symver_gnu_asm"
1598
1599 # threading support
1600 atomics_gcc_if="sync_val_compare_and_swap"
1601 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1602 atomics_win32_if="MemoryBarrier"
1603 atomics_native_if_any="$ATOMICS_LIST"
1604 threads_if_any="$THREADS_LIST"
1605
1606 # subsystems
1607 dct_select="rdft"
1608 error_resilience_select="dsputil"
1609 lpc_select="dsputil"
1610 mdct_select="fft"
1611 rdft_select="fft"
1612 mpegaudio_select="mpegaudiodsp"
1613 mpegaudiodsp_select="dct"
1614 mpegvideo_select="dsputil hpeldsp videodsp"
1615 mpegvideoenc_select="mpegvideo"
1616
1617 # decoders / encoders
1618 aac_decoder_select="mdct sinewin"
1619 aac_encoder_select="audio_frame_queue mdct sinewin"
1620 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1621 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1622 ac3_encoder_select="mdct ac3dsp dsputil"
1623 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1624 aic_decoder_select="dsputil golomb"
1625 alac_encoder_select="lpc"
1626 als_decoder_select="dsputil"
1627 amrnb_decoder_select="lsp"
1628 amrwb_decoder_select="lsp"
1629 amv_decoder_select="dsputil hpeldsp"
1630 ape_decoder_select="dsputil"
1631 asv1_decoder_select="dsputil"
1632 asv1_encoder_select="dsputil"
1633 asv2_decoder_select="dsputil"
1634 asv2_encoder_select="dsputil"
1635 atrac1_decoder_select="mdct sinewin"
1636 atrac3_decoder_select="mdct"
1637 atrac3p_decoder_select="mdct sinewin"
1638 bink_decoder_select="dsputil hpeldsp"
1639 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1640 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1641 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1642 cllc_decoder_select="dsputil"
1643 comfortnoise_encoder_select="lpc"
1644 cook_decoder_select="dsputil mdct sinewin"
1645 cscd_decoder_select="lzo"
1646 cscd_decoder_suggest="zlib"
1647 dca_decoder_select="mdct"
1648 dnxhd_decoder_select="dsputil"
1649 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1650 dvvideo_decoder_select="dsputil"
1651 dvvideo_encoder_select="dsputil"
1652 dxa_decoder_deps="zlib"
1653 eac3_decoder_select="ac3_decoder"
1654 eac3_encoder_select="ac3_encoder"
1655 eamad_decoder_select="aandcttables dsputil mpegvideo"
1656 eatgq_decoder_select="aandcttables dsputil"
1657 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1658 ffv1_decoder_select="dsputil golomb rangecoder"
1659 ffv1_encoder_select="dsputil rangecoder"
1660 ffvhuff_decoder_select="dsputil"
1661 ffvhuff_encoder_select="dsputil huffman"
1662 flac_decoder_select="golomb"
1663 flac_encoder_select="dsputil golomb lpc"
1664 flashsv_decoder_deps="zlib"
1665 flashsv_encoder_deps="zlib"
1666 flashsv2_decoder_deps="zlib"
1667 flv_decoder_select="h263_decoder"
1668 flv_encoder_select="h263_encoder"
1669 fourxm_decoder_select="dsputil"
1670 fraps_decoder_select="dsputil huffman"
1671 g2m_decoder_deps="zlib"
1672 g2m_decoder_select="dsputil"
1673 h261_decoder_select="error_resilience mpegvideo"
1674 h261_encoder_select="aandcttables mpegvideoenc"
1675 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1676 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1677 h263i_decoder_select="h263_decoder"
1678 h263p_encoder_select="h263_encoder"
1679 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1680 h264_decoder_suggest="error_resilience"
1681 hevc_decoder_select="dsputil golomb videodsp"
1682 huffyuv_decoder_select="dsputil"
1683 huffyuv_encoder_select="dsputil huffman"
1684 iac_decoder_select="dsputil fft mdct sinewin"
1685 imc_decoder_select="dsputil fft mdct sinewin"
1686 indeo3_decoder_select="hpeldsp"
1687 interplay_video_decoder_select="hpeldsp"
1688 jpegls_decoder_select="dsputil golomb hpeldsp"
1689 jpegls_encoder_select="golomb"
1690 jv_decoder_select="dsputil"
1691 lagarith_decoder_select="dsputil"
1692 ljpeg_encoder_select="aandcttables mpegvideoenc"
1693 loco_decoder_select="golomb"
1694 mdec_decoder_select="dsputil error_resilience mpegvideo"
1695 metasound_decoder_select="lsp mdct sinewin"
1696 mimic_decoder_select="dsputil hpeldsp"
1697 mjpeg_decoder_select="dsputil hpeldsp"
1698 mjpegb_decoder_select="dsputil hpeldsp"
1699 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1700 mlp_decoder_select="dsputil mlp_parser"
1701 motionpixels_decoder_select="dsputil"
1702 mp1_decoder_select="mpegaudio"
1703 mp1float_decoder_select="mpegaudio"
1704 mp2_decoder_select="mpegaudio"
1705 mp2float_decoder_select="mpegaudio"
1706 mp3_decoder_select="mpegaudio"
1707 mp3adu_decoder_select="mpegaudio"
1708 mp3adufloat_decoder_select="mpegaudio"
1709 mp3float_decoder_select="mpegaudio"
1710 mp3on4_decoder_select="mpegaudio"
1711 mp3on4float_decoder_select="mpegaudio"
1712 mpc7_decoder_select="dsputil mpegaudiodsp"
1713 mpc8_decoder_select="dsputil mpegaudiodsp"
1714 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1715 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1716 mpeg1video_decoder_select="error_resilience mpegvideo"
1717 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1718 mpeg2video_decoder_select="error_resilience mpegvideo"
1719 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1720 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1721 mpeg4_encoder_select="h263_encoder"
1722 msmpeg4v1_decoder_select="h263_decoder"
1723 msmpeg4v2_decoder_select="h263_decoder"
1724 msmpeg4v2_encoder_select="h263_encoder"
1725 msmpeg4v3_decoder_select="h263_decoder"
1726 msmpeg4v3_encoder_select="h263_encoder"
1727 mss2_decoder_select="error_resilience vc1_decoder"
1728 mxpeg_decoder_select="dsputil hpeldsp"
1729 nellymoser_decoder_select="mdct sinewin"
1730 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1731 nuv_decoder_select="dsputil lzo"
1732 png_decoder_deps="zlib"
1733 png_decoder_select="dsputil"
1734 png_encoder_deps="zlib"
1735 png_encoder_select="dsputil"
1736 prores_decoder_select="dsputil"
1737 prores_encoder_select="dsputil"
1738 qcelp_decoder_select="lsp"
1739 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1740 ra_144_encoder_select="audio_frame_queue lpc"
1741 ralf_decoder_select="golomb"
1742 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1743 rv10_encoder_select="h263_encoder"
1744 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1745 rv20_encoder_select="h263_encoder"
1746 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1747 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1748 shorten_decoder_select="golomb"
1749 sipr_decoder_select="lsp"
1750 sp5x_decoder_select="dsputil hpeldsp"
1751 svq1_decoder_select="hpeldsp"
1752 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1753 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1754 svq3_decoder_suggest="error_resilience zlib"
1755 tak_decoder_select="dsputil"
1756 theora_decoder_select="vp3_decoder"
1757 tiff_decoder_suggest="zlib"
1758 tiff_encoder_suggest="zlib"
1759 thp_decoder_select="dsputil hpeldsp"
1760 truehd_decoder_select="mlp_decoder"
1761 truemotion2_decoder_select="dsputil"
1762 truespeech_decoder_select="dsputil"
1763 tscc_decoder_deps="zlib"
1764 twinvq_decoder_select="mdct lsp sinewin"
1765 utvideo_decoder_select="dsputil"
1766 utvideo_encoder_select="dsputil huffman"
1767 vble_decoder_select="dsputil"
1768 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1769 vc1image_decoder_select="vc1_decoder"
1770 vorbis_decoder_select="mdct"
1771 vorbis_encoder_select="mdct"
1772 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1773 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1774 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1775 vp6a_decoder_select="vp6_decoder"
1776 vp6f_decoder_select="vp6_decoder"
1777 vp8_decoder_select="h264pred videodsp"
1778 vp9_decoder_select="videodsp"
1779 webp_decoder_select="vp8_decoder"
1780 wmapro_decoder_select="mdct sinewin"
1781 wmav1_decoder_select="mdct sinewin"
1782 wmav1_encoder_select="mdct sinewin"
1783 wmav2_decoder_select="mdct sinewin"
1784 wmav2_encoder_select="mdct sinewin"
1785 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1786 wmv1_decoder_select="h263_decoder"
1787 wmv1_encoder_select="h263_encoder"
1788 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1789 wmv2_encoder_select="h263_encoder"
1790 wmv3_decoder_select="vc1_decoder"
1791 wmv3image_decoder_select="wmv3_decoder"
1792 zerocodec_decoder_deps="zlib"
1793 zlib_decoder_deps="zlib"
1794 zlib_encoder_deps="zlib"
1795 zmbv_decoder_deps="zlib"
1796 zmbv_encoder_deps="zlib"
1797
1798 # hardware accelerators
1799 dxva2_deps="dxva2api_h"
1800 vaapi_deps="va_va_h"
1801 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1802 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1803 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1804
1805 h263_vaapi_hwaccel_deps="vaapi"
1806 h263_vaapi_hwaccel_select="h263_decoder"
1807 h263_vdpau_hwaccel_deps="vdpau"
1808 h263_vdpau_hwaccel_select="h263_decoder"
1809 h264_dxva2_hwaccel_deps="dxva2"
1810 h264_dxva2_hwaccel_select="h264_decoder"
1811 h264_vaapi_hwaccel_deps="vaapi"
1812 h264_vaapi_hwaccel_select="h264_decoder"
1813 h264_vda_hwaccel_deps="vda"
1814 h264_vda_hwaccel_select="h264_decoder"
1815 h264_vdpau_hwaccel_deps="vdpau"
1816 h264_vdpau_hwaccel_select="h264_decoder"
1817 mpeg1_vdpau_hwaccel_deps="vdpau"
1818 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1819 mpeg2_dxva2_hwaccel_deps="dxva2"
1820 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1821 mpeg2_vaapi_hwaccel_deps="vaapi"
1822 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1823 mpeg2_vdpau_hwaccel_deps="vdpau"
1824 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1825 mpeg4_vaapi_hwaccel_deps="vaapi"
1826 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1827 mpeg4_vdpau_hwaccel_deps="vdpau"
1828 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1829 vc1_dxva2_hwaccel_deps="dxva2"
1830 vc1_dxva2_hwaccel_select="vc1_decoder"
1831 vc1_vaapi_hwaccel_deps="vaapi"
1832 vc1_vaapi_hwaccel_select="vc1_decoder"
1833 vc1_vdpau_hwaccel_deps="vdpau"
1834 vc1_vdpau_hwaccel_select="vc1_decoder"
1835 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1836 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1837 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1838
1839 # parsers
1840 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1841 mpeg4video_parser_select="error_resilience mpegvideo"
1842 mpegvideo_parser_select="error_resilience mpegvideo"
1843 vc1_parser_select="mpegvideo"
1844
1845 # external libraries
1846 libfaac_encoder_deps="libfaac"
1847 libfaac_encoder_select="audio_frame_queue"
1848 libfdk_aac_decoder_deps="libfdk_aac"
1849 libfdk_aac_encoder_deps="libfdk_aac"
1850 libfdk_aac_encoder_select="audio_frame_queue"
1851 libgsm_decoder_deps="libgsm"
1852 libgsm_encoder_deps="libgsm"
1853 libgsm_ms_decoder_deps="libgsm"
1854 libgsm_ms_encoder_deps="libgsm"
1855 libilbc_decoder_deps="libilbc"
1856 libilbc_encoder_deps="libilbc"
1857 libmp3lame_encoder_deps="libmp3lame"
1858 libmp3lame_encoder_select="audio_frame_queue"
1859 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1860 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1861 libopencore_amrnb_encoder_select="audio_frame_queue"
1862 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1863 libopenjpeg_decoder_deps="libopenjpeg"
1864 libopenjpeg_encoder_deps="libopenjpeg"
1865 libopus_decoder_deps="libopus"
1866 libopus_encoder_deps="libopus"
1867 libopus_encoder_select="audio_frame_queue"
1868 libschroedinger_decoder_deps="libschroedinger"
1869 libschroedinger_encoder_deps="libschroedinger"
1870 libspeex_decoder_deps="libspeex"
1871 libspeex_encoder_deps="libspeex"
1872 libspeex_encoder_select="audio_frame_queue"
1873 libtheora_encoder_deps="libtheora"
1874 libvo_aacenc_encoder_deps="libvo_aacenc"
1875 libvo_aacenc_encoder_select="audio_frame_queue"
1876 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1877 libvorbis_encoder_deps="libvorbis"
1878 libvorbis_encoder_select="audio_frame_queue"
1879 libvpx_vp8_decoder_deps="libvpx"
1880 libvpx_vp8_encoder_deps="libvpx"
1881 libvpx_vp9_decoder_deps="libvpx"
1882 libvpx_vp9_encoder_deps="libvpx"
1883 libwavpack_encoder_deps="libwavpack"
1884 libwebp_encoder_deps="libwebp"
1885 libx264_encoder_deps="libx264"
1886 libxavs_encoder_deps="libxavs"
1887 libxvid_encoder_deps="libxvid"
1888
1889 # demuxers / muxers
1890 ac3_demuxer_select="ac3_parser"
1891 asf_demuxer_select="riffdec"
1892 asf_muxer_select="riffenc"
1893 asf_stream_muxer_select="asf_muxer"
1894 avi_demuxer_select="riffdec"
1895 avi_muxer_select="riffenc"
1896 avisynth_demuxer_deps="avisynth"
1897 avisynth_demuxer_select="riffdec"
1898 caf_demuxer_select="riffdec"
1899 dirac_demuxer_select="dirac_parser"
1900 dxa_demuxer_select="riffdec"
1901 eac3_demuxer_select="ac3_parser"
1902 f4v_muxer_select="mov_muxer"
1903 flac_demuxer_select="flac_parser"
1904 hds_muxer_select="flv_muxer"
1905 hls_muxer_select="mpegts_muxer"
1906 ipod_muxer_select="mov_muxer"
1907 ismv_muxer_select="mov_muxer"
1908 matroska_audio_muxer_select="matroska_muxer"
1909 matroska_demuxer_select="riffdec"
1910 matroska_demuxer_suggest="bzlib lzo zlib"
1911 matroska_muxer_select="riffenc"
1912 mmf_muxer_select="riffenc"
1913 mov_demuxer_select="riffdec"
1914 mov_demuxer_suggest="zlib"
1915 mov_muxer_select="riffenc rtpenc_chain"
1916 mp3_demuxer_select="mpegaudio_parser"
1917 mp4_muxer_select="mov_muxer"
1918 mpegts_muxer_select="adts_muxer latm_muxer"
1919 mpegtsraw_demuxer_select="mpegts_demuxer"
1920 mxf_d10_muxer_select="mxf_muxer"
1921 nut_muxer_select="riffenc"
1922 nuv_demuxer_select="riffdec"
1923 ogg_demuxer_select="golomb"
1924 psp_muxer_select="mov_muxer"
1925 rtp_demuxer_select="sdp_demuxer"
1926 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1927 rtsp_demuxer_select="http_protocol rtpdec"
1928 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1929 sap_demuxer_select="sdp_demuxer"
1930 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1931 sdp_demuxer_select="rtpdec"
1932 smoothstreaming_muxer_select="ismv_muxer"
1933 spdif_muxer_select="aac_parser"
1934 tak_demuxer_select="tak_parser"
1935 tg2_muxer_select="mov_muxer"
1936 tgp_muxer_select="mov_muxer"
1937 w64_demuxer_select="wav_demuxer"
1938 wav_demuxer_select="riffdec"
1939 wav_muxer_select="riffenc"
1940 webm_muxer_select="riffenc"
1941 wtv_demuxer_select="riffdec"
1942 xmv_demuxer_select="riffdec"
1943 xwma_demuxer_select="riffdec"
1944
1945 # indevs / outdevs
1946 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1947 alsa_outdev_deps="alsa_asoundlib_h"
1948 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1949 dv1394_indev_deps="dv1394"
1950 dv1394_indev_select="dv_demuxer"
1951 fbdev_indev_deps="linux_fb_h"
1952 jack_indev_deps="jack_jack_h pthreads"
1953 libcdio_indev_deps="libcdio"
1954 libdc1394_indev_deps="libdc1394"
1955 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1956 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1957 pulse_indev_deps="libpulse"
1958 sndio_indev_deps="sndio_h"
1959 sndio_outdev_deps="sndio_h"
1960 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1961 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1962 vfwcap_indev_extralibs="-lavicap32"
1963 x11grab_indev_deps="x11grab XShmCreateImage"
1964
1965 # protocols
1966 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1967 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1968 ffrtmpcrypt_protocol_select="tcp_protocol"
1969 ffrtmphttp_protocol_deps="!librtmp_protocol"
1970 ffrtmphttp_protocol_select="http_protocol"
1971 gopher_protocol_select="network"
1972 httpproxy_protocol_select="tcp_protocol"
1973 http_protocol_select="tcp_protocol"
1974 https_protocol_select="tls_protocol"
1975 librtmp_protocol_deps="librtmp"
1976 librtmpe_protocol_deps="librtmp"
1977 librtmps_protocol_deps="librtmp"
1978 librtmpt_protocol_deps="librtmp"
1979 librtmpte_protocol_deps="librtmp"
1980 mmsh_protocol_select="http_protocol"
1981 mmst_protocol_select="network"
1982 rtmp_protocol_deps="!librtmp_protocol"
1983 rtmp_protocol_select="tcp_protocol"
1984 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1985 rtmps_protocol_deps="!librtmp_protocol"
1986 rtmps_protocol_select="tls_protocol"
1987 rtmpt_protocol_select="ffrtmphttp_protocol"
1988 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1989 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1990 rtp_protocol_select="udp_protocol"
1991 sctp_protocol_deps="struct_sctp_event_subscribe"
1992 sctp_protocol_select="network"
1993 srtp_protocol_select="rtp_protocol"
1994 tcp_protocol_select="network"
1995 tls_protocol_deps_any="openssl gnutls"
1996 tls_protocol_select="tcp_protocol"
1997 udp_protocol_select="network"
1998 unix_protocol_deps="sys_un_h"
1999 unix_protocol_select="network"
2000
2001 # filters
2002 blackframe_filter_deps="gpl"
2003 boxblur_filter_deps="gpl"
2004 cropdetect_filter_deps="gpl"
2005 delogo_filter_deps="gpl"
2006 drawtext_filter_deps="libfreetype"
2007 frei0r_filter_deps="frei0r dlopen strtok_r"
2008 frei0r_filter_extralibs='$ldl'
2009 frei0r_src_filter_deps="frei0r dlopen strtok_r"
2010 frei0r_src_filter_extralibs='$ldl'
2011 hqdn3d_filter_deps="gpl"
2012 interlace_filter_deps="gpl"
2013 resample_filter_deps="avresample"
2014 ocv_filter_deps="libopencv"
2015 scale_filter_deps="swscale"
2016
2017 # examples
2018 output_example_deps="avcodec avformat avutil swscale"
2019 transcode_aac_example_deps="avcodec avformat avresample"
2020
2021 # libraries
2022 avcodec_deps="avutil"
2023 avdevice_deps="avutil avcodec avformat"
2024 avfilter_deps="avutil"
2025 avformat_deps="avutil avcodec"
2026 avresample_deps="avutil"
2027 swscale_deps="avutil"
2028
2029 # programs
2030 avconv_deps="avcodec avfilter avformat avresample swscale"
2031 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2032                fps_filter null_filter resample_filter scale_filter
2033                setpts_filter trim_filter"
2034 avplay_deps="avcodec avformat avresample swscale sdl"
2035 avplay_select="rdft"
2036 avprobe_deps="avcodec avformat"
2037 avserver_deps="avformat fork !shared"
2038 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2039 avserver_extralibs='$ldl'
2040
2041 # documentation
2042 pod2man_deps="doc"
2043 texi2html_deps="doc"
2044
2045 # default parameters
2046
2047 logfile="config.log"
2048
2049 # installation paths
2050 prefix_default="/usr/local"
2051 bindir_default='${prefix}/bin'
2052 datadir_default='${prefix}/share/avconv'
2053 docdir_default='${prefix}/share/doc/libav'
2054 incdir_default='${prefix}/include'
2055 libdir_default='${prefix}/lib'
2056 mandir_default='${prefix}/share/man'
2057 shlibdir_default="$libdir_default"
2058
2059 # toolchain
2060 ar_default="ar"
2061 cc_default="gcc"
2062 host_cc_default="gcc"
2063 cp_f="cp -f"
2064 ln_s="ln -s -f"
2065 nm_default="nm -g"
2066 objformat="elf"
2067 pkg_config_default=pkg-config
2068 ranlib="ranlib"
2069 strip="strip"
2070 yasmexe="yasm"
2071
2072 nogas=":"
2073
2074 # machine
2075 arch_default=$(uname -m)
2076 cpu="generic"
2077
2078 # OS
2079 target_os_default=$(tolower $(uname -s))
2080 host_os=$target_os_default
2081
2082 # configurable options
2083 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2084
2085 enable asm
2086 enable debug
2087 enable doc
2088 enable optimizations
2089 enable safe_bitstream_reader
2090 enable static
2091 enable swscale_alpha
2092
2093 # By default, enable only those hwaccels that have no external dependencies.
2094 enable dxva2 vdpau
2095
2096 # build settings
2097 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2098 LIBPREF="lib"
2099 LIBSUF=".a"
2100 FULLNAME='$(NAME)$(BUILDSUF)'
2101 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2102 SLIBPREF="lib"
2103 SLIBSUF=".so"
2104 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2105 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2106 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2107 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2108 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2109 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2110
2111 asflags_filter=echo
2112 cflags_filter=echo
2113 ldflags_filter=echo
2114
2115 AS_C='-c'
2116 AS_O='-o $@'
2117 CC_C='-c'
2118 CC_E='-E -o $@'
2119 CC_O='-o $@'
2120 LD_O='-o $@'
2121 LD_LIB='-l%'
2122 LD_PATH='-L'
2123 HOSTCC_C='-c'
2124 HOSTCC_E='-E -o $@'
2125 HOSTCC_O='-o $@'
2126 HOSTLD_O='-o $@'
2127
2128 host_libs='-lm'
2129 host_cflags_filter=echo
2130 host_ldflags_filter=echo
2131
2132 target_path='$(CURDIR)'
2133
2134 # since the object filename is not given with the -MM flag, the compiler
2135 # is only able to print the basename, and we must add the path ourselves
2136 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2137 DEPFLAGS='-MM'
2138
2139 # find source path
2140 if test -f configure; then
2141     source_path=.
2142 else
2143     source_path=$(cd $(dirname "$0"); pwd)
2144     echo "$source_path" | grep -q '[[:blank:]]' &&
2145         die "Out of tree builds are impossible with whitespace in source path."
2146     test -e "$source_path/config.h" &&
2147         die "Out of tree builds are impossible with config.h in source dir."
2148 fi
2149
2150 for v in "$@"; do
2151     r=${v#*=}
2152     l=${v%"$r"}
2153     r=$(sh_quote "$r")
2154     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2155 done
2156
2157 find_things(){
2158     thing=$1
2159     pattern=$2
2160     file=$source_path/$3
2161     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2162 }
2163
2164 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2165 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2166 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2167 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2168 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2169 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2170 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2171 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2172 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2173 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2174 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2175
2176 ALL_COMPONENTS="
2177     $BSF_LIST
2178     $DECODER_LIST
2179     $DEMUXER_LIST
2180     $ENCODER_LIST
2181     $FILTER_LIST
2182     $HWACCEL_LIST
2183     $INDEV_LIST
2184     $MUXER_LIST
2185     $OUTDEV_LIST
2186     $PARSER_LIST
2187     $PROTOCOL_LIST
2188 "
2189
2190 for n in $COMPONENT_LIST; do
2191     v=$(toupper ${n%s})_LIST
2192     eval enable \$$v
2193     eval ${n}_if_any="\$$v"
2194 done
2195
2196 enable $ARCH_EXT_LIST
2197
2198 die_unknown(){
2199     echo "Unknown option \"$1\"."
2200     echo "See $0 --help for available options."
2201     exit 1
2202 }
2203
2204 print_3_columns() {
2205     cat | tr ' ' '\n' | sort | pr -r -3 -t
2206 }
2207
2208 show_list() {
2209     suffix=_$1
2210     shift
2211     echo $* | sed s/$suffix//g | print_3_columns
2212     exit 0
2213 }
2214
2215 rand_list(){
2216     IFS=', '
2217     set -- $*
2218     unset IFS
2219     for thing; do
2220         comp=${thing%:*}
2221         prob=${thing#$comp}
2222         prob=${prob#:}
2223         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2224         echo "prob ${prob:-0.5}"
2225         printf '%s\n' $comp
2226     done
2227 }
2228
2229 do_random(){
2230     action=$1
2231     shift
2232     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2233     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2234 }
2235
2236 for opt do
2237     optval="${opt#*=}"
2238     case "$opt" in
2239         --extra-ldflags=*)
2240             add_ldflags $optval
2241         ;;
2242         --extra-libs=*)
2243             add_extralibs $optval
2244         ;;
2245         --disable-devices)
2246             disable $INDEV_LIST $OUTDEV_LIST
2247         ;;
2248         --enable-debug=*)
2249             debuglevel="$optval"
2250         ;;
2251         --disable-programs)
2252             disable $PROGRAM_LIST
2253         ;;
2254         --disable-everything)
2255             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2256         ;;
2257         --disable-all)
2258             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2259             disable $LIBRARY_LIST $PROGRAM_LIST doc
2260         ;;
2261         --enable-random|--disable-random)
2262             action=${opt%%-random}
2263             do_random ${action#--} $COMPONENT_LIST
2264         ;;
2265         --enable-random=*|--disable-random=*)
2266             action=${opt%%-random=*}
2267             do_random ${action#--} $optval
2268         ;;
2269         --enable-*=*|--disable-*=*)
2270             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2271             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2272             eval list=\$$(toupper $thing)_LIST
2273             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2274             $action $(filter "$name" $list)
2275         ;;
2276         --enable-?*|--disable-?*)
2277             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2278             if is_in $option $COMPONENT_LIST; then
2279                 test $action = disable && action=unset
2280                 eval $action \$$(toupper ${option%s})_LIST
2281             elif is_in $option $CMDLINE_SELECT; then
2282                 $action $option
2283             else
2284                 die_unknown $opt
2285             fi
2286         ;;
2287         --list-*)
2288             NAME="${opt#--list-}"
2289             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2290             NAME=${NAME%s}
2291             eval show_list $NAME \$$(toupper $NAME)_LIST
2292         ;;
2293         --help|-h) show_help
2294         ;;
2295         *)
2296             optname="${opt%%=*}"
2297             optname="${optname#--}"
2298             optname=$(echo "$optname" | sed 's/-/_/g')
2299             if is_in $optname $CMDLINE_SET; then
2300                 eval $optname='$optval'
2301             elif is_in $optname $CMDLINE_APPEND; then
2302                 append $optname "$optval"
2303             else
2304                 die_unknown $opt
2305             fi
2306         ;;
2307     esac
2308 done
2309
2310 disabled logging && logfile=/dev/null
2311
2312 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2313 set >> $logfile
2314
2315 test -n "$cross_prefix" && enable cross_compile
2316
2317 if enabled cross_compile; then
2318     test -n "$arch" && test -n "$target_os" ||
2319         die "Must specify target arch and OS when cross-compiling"
2320 fi
2321
2322 ar_default="${cross_prefix}${ar_default}"
2323 cc_default="${cross_prefix}${cc_default}"
2324 nm_default="${cross_prefix}${nm_default}"
2325 pkg_config_default="${cross_prefix}${pkg_config_default}"
2326 ranlib="${cross_prefix}${ranlib}"
2327 strip="${cross_prefix}${strip}"
2328
2329 sysinclude_default="${sysroot}/usr/include"
2330
2331 case "$toolchain" in
2332     clang-asan)
2333         cc_default="clang"
2334         add_cflags  -fsanitize=address
2335         add_ldflags -fsanitize=address
2336     ;;
2337     clang-tsan)
2338         cc_default="clang"
2339         add_cflags  -fsanitize=thread -pie
2340         add_ldflags -fsanitize=thread -pie
2341     ;;
2342     gcc-asan)
2343         cc_default="gcc"
2344         add_cflags  -fsanitize=address
2345         add_ldflags -fsanitize=address
2346     ;;
2347     gcc-tsan)
2348         cc_default="gcc"
2349         add_cflags  -fsanitize=thread -pie -fPIC
2350         add_ldflags -fsanitize=thread -pie -fPIC
2351     ;;
2352     valgrind-massif)
2353         target_exec_default="valgrind"
2354         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2355     ;;
2356     valgrind-memcheck)
2357         target_exec_default="valgrind"
2358         target_exec_args="--track-origins=yes --leak-check=full"
2359     ;;
2360     msvc)
2361         # Check whether the current MSVC version needs the C99 converter.
2362         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2363         # support enough of C99 to build libav. Default to the new
2364         # behaviour if the regexp was unable to match anything, since this
2365         # successfully parses the version number of existing supported
2366         # versions that require the converter (MSVC 2010 and 2012).
2367         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2368         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2369             cc_default="cl"
2370         else
2371             cc_default="c99wrap cl"
2372         fi
2373         ld_default="link"
2374         nm_default="dumpbin -symbols"
2375         ar_default="lib"
2376         target_os_default="win32"
2377         # Use a relative path for TMPDIR. This makes sure all the
2378         # ffconf temp files are written with a relative path, avoiding
2379         # issues with msys/win32 path conversion for MSVC parameters
2380         # such as -Fo<file> or -out:<file>.
2381         TMPDIR=.
2382     ;;
2383     icl)
2384         cc_default="icl"
2385         ld_default="xilink"
2386         nm_default="dumpbin -symbols"
2387         ar_default="xilib"
2388         target_os_default="win32"
2389         TMPDIR=.
2390     ;;
2391     gcov)
2392         add_cflags  -fprofile-arcs -ftest-coverage
2393         add_ldflags -fprofile-arcs -ftest-coverage
2394     ;;
2395     hardened)
2396         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2397         add_ldflags -Wl,-z,relro -Wl,-z,now
2398     ;;
2399     ?*)
2400         die "Unknown toolchain $toolchain"
2401     ;;
2402 esac
2403
2404 set_default arch cc pkg_config sysinclude target_exec target_os
2405 enabled cross_compile || host_cc_default=$cc
2406 set_default host_cc
2407
2408 if ! $pkg_config --version >/dev/null 2>&1; then
2409     warn "$pkg_config not found, library detection may fail."
2410     pkg_config=false
2411 fi
2412
2413 exesuf() {
2414     case $1 in
2415         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2416     esac
2417 }
2418
2419 EXESUF=$(exesuf $target_os)
2420 HOSTEXESUF=$(exesuf $host_os)
2421
2422 # set temporary file name
2423 : ${TMPDIR:=$TEMPDIR}
2424 : ${TMPDIR:=$TMP}
2425 : ${TMPDIR:=/tmp}
2426
2427 if ! check_cmd mktemp -u XXXXXX; then
2428     # simple replacement for missing mktemp
2429     # NOT SAFE FOR GENERAL USE
2430     mktemp(){
2431         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2432     }
2433 fi
2434
2435 tmpfile(){
2436     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2437         (set -C; exec > $tmp) 2>/dev/null ||
2438         die "Unable to create temporary file in $TMPDIR."
2439     append TMPFILES $tmp
2440     eval $1=$tmp
2441 }
2442
2443 trap 'rm -f -- $TMPFILES' EXIT
2444
2445 tmpfile TMPASM .asm
2446 tmpfile TMPC   .c
2447 tmpfile TMPE   $EXESUF
2448 tmpfile TMPH   .h
2449 tmpfile TMPO   .o
2450 tmpfile TMPS   .S
2451 tmpfile TMPSH  .sh
2452 tmpfile TMPV   .ver
2453
2454 unset -f mktemp
2455
2456 chmod +x $TMPE
2457
2458 # make sure we can execute files in $TMPDIR
2459 cat > $TMPSH 2>> $logfile <<EOF
2460 #! /bin/sh
2461 EOF
2462 chmod +x $TMPSH >> $logfile 2>&1
2463 if ! $TMPSH >> $logfile 2>&1; then
2464     cat <<EOF
2465 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2466 variable to another directory and make sure that it is not mounted noexec.
2467 EOF
2468     die "Sanity test failed."
2469 fi
2470
2471 ccc_flags(){
2472     for flag; do
2473         case $flag in
2474             -std=c99)           echo -c99                       ;;
2475             -mcpu=*)            echo -arch ${flag#*=}           ;;
2476             -mieee)             echo -ieee                      ;;
2477             -O*|-fast)          echo $flag                      ;;
2478             -fno-math-errno)    echo -assume nomath_errno       ;;
2479             -g)                 echo -g3                        ;;
2480             -Wall)              echo -msg_enable level2         ;;
2481             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2482             -Wl,*)              echo $flag                      ;;
2483             -f*|-W*)                                            ;;
2484             *)                  echo $flag                      ;;
2485         esac
2486    done
2487 }
2488
2489 cparser_flags(){
2490     for flag; do
2491         case $flag in
2492             -Wno-switch)             echo -Wno-switch-enum ;;
2493             -Wno-format-zero-length) ;;
2494             -Wdisabled-optimization) ;;
2495             -Wno-pointer-sign)       echo -Wno-other ;;
2496             *)                       echo $flag ;;
2497         esac
2498     done
2499 }
2500
2501 msvc_common_flags(){
2502     for flag; do
2503         case $flag in
2504             # In addition to specifying certain flags under the compiler
2505             # specific filters, they must be specified here as well or else the
2506             # generic catch all at the bottom will print the original flag.
2507             -Wall)                ;;
2508             -std=c99)             ;;
2509             # Common flags
2510             -fomit-frame-pointer) ;;
2511             -g)                   echo -Z7 ;;
2512             -fno-math-errno)      ;;
2513             -fno-common)          ;;
2514             -fno-signed-zeros)    ;;
2515             -fPIC)                ;;
2516             -mthumb)              ;;
2517             -march=*)             ;;
2518             -lz)                  echo zlib.lib ;;
2519             -lavifil32)           echo vfw32.lib ;;
2520             -lavicap32)           echo vfw32.lib user32.lib ;;
2521             -l*)                  echo ${flag#-l}.lib ;;
2522             *)                    echo $flag ;;
2523         esac
2524     done
2525 }
2526
2527 msvc_flags(){
2528     msvc_common_flags "$@"
2529     for flag; do
2530         case $flag in
2531             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2532                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2533                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2534                                        -wd4273 ;;
2535         esac
2536     done
2537 }
2538
2539 icl_flags(){
2540     msvc_common_flags "$@"
2541     for flag; do
2542         case $flag in
2543             # Despite what Intel's documentation says -Wall, which is supported
2544             # on Windows, does enable remarks so disable them here.
2545             -Wall)                echo $flag -Qdiag-disable:remark ;;
2546             -std=c99)             echo -Qstd=c99 ;;
2547         esac
2548     done
2549 }
2550
2551 pgi_flags(){
2552     for flag; do
2553         case $flag in
2554             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2555             -fomit-frame-pointer) echo -Mnoframe ;;
2556             -g)                   echo -gopt ;;
2557             *)                    echo $flag ;;
2558         esac
2559     done
2560 }
2561
2562 suncc_flags(){
2563     for flag; do
2564         case $flag in
2565             -march=*|-mcpu=*)
2566                 case "${flag#*=}" in
2567                     native)                   echo -xtarget=native       ;;
2568                     v9|niagara)               echo -xarch=sparc          ;;
2569                     ultrasparc)               echo -xarch=sparcvis       ;;
2570                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2571                     i586|pentium)             echo -xchip=pentium        ;;
2572                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2573                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2574                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2575                     pentium4*)          echo -xtarget=pentium4           ;;
2576                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2577                     *-sse3)             echo -xarch=sse3                 ;;
2578                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2579                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2580                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2581                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2582                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2583                     k8|opteron|athlon64|athlon-fx)
2584                                                echo -xarch=sse2a         ;;
2585                     athlon*)                   echo -xarch=pentium_proa  ;;
2586                 esac
2587                 ;;
2588             -std=c99)             echo -xc99              ;;
2589             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2590             -fPIC)                echo -KPIC -xcode=pic32 ;;
2591             -W*,*)                echo $flag              ;;
2592             -f*-*|-W*|-mimpure-text)                      ;;
2593             -shared)              echo -G                 ;;
2594             *)                    echo $flag              ;;
2595         esac
2596     done
2597 }
2598
2599 tms470_flags(){
2600     for flag; do
2601         case $flag in
2602             -march=*|-mcpu=*)
2603                 case "${flag#*=}" in
2604                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2605                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2606                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2607                     armv6*|arm11*)          echo -mv=6   ;;
2608                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2609                                             echo -mv=5e  ;;
2610                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2611                 esac
2612                 ;;
2613             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2614             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2615             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2616             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2617             -msoft-float)   echo --float_support=vfplib       ;;
2618             -O[0-3]|-mf=*)  echo $flag                        ;;
2619             -g)             echo -g -mn                       ;;
2620             -pds=*)         echo $flag                        ;;
2621             -D*|-I*)        echo $flag                        ;;
2622             --gcc|--abi=*)  echo $flag                        ;;
2623             -me)            echo $flag                        ;;
2624         esac
2625     done
2626 }
2627
2628 probe_cc(){
2629     pfx=$1
2630     _cc=$2
2631
2632     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2633     unset _ld_o _ldflags _ld_lib _ld_path
2634     unset _depflags _DEPCMD _DEPFLAGS
2635     _flags_filter=echo
2636
2637     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2638         _type=llvm_gcc
2639         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2640         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2641         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2642         _cflags_speed='-O3'
2643         _cflags_size='-Os'
2644     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2645         _type=gcc
2646         gcc_version=$($_cc --version | head -n1)
2647         gcc_basever=$($_cc -dumpversion)
2648         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2649         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2650         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2651         if ! $_cc -dumpversion | grep -q '^2\.'; then
2652             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2653         fi
2654         _cflags_speed='-O3'
2655         _cflags_size='-Os'
2656     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2657         _type=icc
2658         _ident=$($_cc --version | head -n1)
2659         _depflags='-MMD'
2660         _cflags_speed='-O3'
2661         _cflags_size='-Os'
2662         _cflags_noopt='-O1'
2663     elif $_cc -v 2>&1 | grep -q xlc; then
2664         _type=xlc
2665         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2666         _cflags_speed='-O5'
2667         _cflags_size='-O5 -qcompact'
2668     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2669         _type=ccc
2670         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2671         _DEPFLAGS='-M'
2672         _cflags_speed='-fast'
2673         _cflags_size='-O1'
2674         _flags_filter=ccc_flags
2675     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2676         test -d "$sysroot" || die "No valid sysroot specified."
2677         _type=armcc
2678         _ident=$($_cc --vsn | head -n1)
2679         armcc_conf="$PWD/armcc.conf"
2680         $_cc --arm_linux_configure                 \
2681              --arm_linux_config_file="$armcc_conf" \
2682              --configure_sysroot="$sysroot"        \
2683              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2684              die "Error creating armcc configuration file."
2685         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2686         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2687         as_default="${cross_prefix}gcc"
2688         _depflags='-MMD'
2689         _cflags_speed='-O3'
2690         _cflags_size='-Os'
2691     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2692         _type=tms470
2693         _ident=$($_cc -version | head -n1 | tr -s ' ')
2694         _flags='--gcc --abi=eabi -me'
2695         _cc_e='-ppl -fe=$@'
2696         _cc_o='-fe=$@'
2697         _depflags='-ppa -ppd=$(@:.o=.d)'
2698         _cflags_speed='-O3 -mf=5'
2699         _cflags_size='-O3 -mf=2'
2700         _flags_filter=tms470_flags
2701     elif $_cc -v 2>&1 | grep -q clang; then
2702         _type=clang
2703         _ident=$($_cc --version | head -n1)
2704         _depflags='-MMD'
2705         _cflags_speed='-O3'
2706         _cflags_size='-Os'
2707     elif $_cc -V 2>&1 | grep -q Sun; then
2708         _type=suncc
2709         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2710         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2711         _DEPFLAGS='-xM1 -xc99'
2712         _ldflags='-std=c99'
2713         _cflags_speed='-O5'
2714         _cflags_size='-O5 -xspace'
2715         _flags_filter=suncc_flags
2716     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2717         _type=pathscale
2718         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2719         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2720         _cflags_speed='-O2'
2721         _cflags_size='-Os'
2722         _flags_filter='filter_out -Wdisabled-optimization'
2723     elif $_cc -v 2>&1 | grep -q Open64; then
2724         _type=open64
2725         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2726         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2727         _cflags_speed='-O2'
2728         _cflags_size='-Os'
2729         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2730     elif $_cc -V 2>&1 | grep -q Portland; then
2731         _type=pgi
2732         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2733         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2734         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2735         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2736         _cflags_noopt="-O1"
2737         _flags_filter=pgi_flags
2738     elif $_cc 2>&1 | grep -q Microsoft; then
2739         _type=msvc
2740         _ident=$($cc 2>&1 | head -n1)
2741         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2742         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2743         _cflags_speed="-O2"
2744         _cflags_size="-O1"
2745         if $_cc 2>&1 | grep -q Linker; then
2746             _ld_o='-out:$@'
2747         else
2748             _ld_o='-Fe$@'
2749         fi
2750         _cc_o='-Fo$@'
2751         _cc_e='-P -Fi$@'
2752         _flags_filter=msvc_flags
2753         _ld_lib='lib%.a'
2754         _ld_path='-libpath:'
2755         _flags='-nologo'
2756         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2757         if [ $pfx = hostcc ]; then
2758             append _cflags -Dsnprintf=_snprintf
2759         fi
2760     elif $_cc 2>&1 | grep -q Intel; then
2761         _type=icl
2762         _ident=$($cc 2>&1 | head -n1)
2763         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2764         # Not only is O3 broken on 13.x+ but it is slower on all previous
2765         # versions (tested) as well.
2766         _cflags_speed="-O2"
2767         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2768         if $_cc 2>&1 | grep -q Linker; then
2769             _ld_o='-out:$@'
2770         else
2771             _ld_o='-Fe$@'
2772         fi
2773         _cc_o='-Fo$@'
2774         _cc_e='-P'
2775         _flags_filter=icl_flags
2776         _ld_lib='lib%.a'
2777         _ld_path='-libpath:'
2778         # -Qdiag-error to make icl error when seeing certain unknown arguments
2779         _flags='-nologo -Qdiag-error:4044,10157'
2780         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2781         # with MSVC which enables it by default.
2782         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2783         if [ $pfx = hostcc ]; then
2784             append _cflags -Dsnprintf=_snprintf
2785         fi
2786     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2787         _type=cparser
2788         _ident=$($_cc --version | head -n1)
2789         _depflags='-MMD'
2790         _cflags_speed='-O4'
2791         _cflags_size='-O2'
2792         _flags_filter=cparser_flags
2793     fi
2794
2795     eval ${pfx}_type=\$_type
2796     eval ${pfx}_ident=\$_ident
2797 }
2798
2799 set_ccvars(){
2800     eval ${1}_C=\${_cc_c-\${${1}_C}}
2801     eval ${1}_E=\${_cc_e-\${${1}_E}}
2802     eval ${1}_O=\${_cc_o-\${${1}_O}}
2803
2804     if [ -n "$_depflags" ]; then
2805         eval ${1}_DEPFLAGS=\$_depflags
2806     else
2807         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2808         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2809         eval DEP${1}FLAGS=\$_flags
2810     fi
2811 }
2812
2813 probe_cc cc "$cc"
2814 cflags_filter=$_flags_filter
2815 cflags_speed=$_cflags_speed
2816 cflags_size=$_cflags_size
2817 cflags_noopt=$_cflags_noopt
2818 add_cflags $_flags $_cflags
2819 cc_ldflags=$_ldflags
2820 set_ccvars CC
2821
2822 probe_cc hostcc "$host_cc"
2823 host_cflags_filter=$_flags_filter
2824 add_host_cflags  $_flags $_cflags
2825 set_ccvars HOSTCC
2826
2827 test -n "$cc_type" && enable $cc_type ||
2828     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2829
2830 : ${as_default:=$cc}
2831 : ${dep_cc_default:=$cc}
2832 : ${ld_default:=$cc}
2833 : ${host_ld_default:=$host_cc}
2834 set_default ar as dep_cc ld host_ld
2835
2836 probe_cc as "$as"
2837 asflags_filter=$_flags_filter
2838 add_asflags $_flags $_cflags
2839 set_ccvars AS
2840
2841 probe_cc ld "$ld"
2842 ldflags_filter=$_flags_filter
2843 add_ldflags $_flags $_ldflags
2844 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2845 LD_O=${_ld_o-$LD_O}
2846 LD_LIB=${_ld_lib-$LD_LIB}
2847 LD_PATH=${_ld_path-$LD_PATH}
2848
2849 probe_cc hostld "$host_ld"
2850 host_ldflags_filter=$_flags_filter
2851 add_host_ldflags $_flags $_ldflags
2852 HOSTLD_O=${_ld_o-$HOSTLD_O}
2853
2854 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2855     probe_cc depcc "$dep_cc"
2856     CCDEP=${_DEPCMD:-$DEPCMD}
2857     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2858     DEPCCFLAGS=$_flags
2859 fi
2860
2861 if $ar 2>&1 | grep -q Microsoft; then
2862     arflags="-nologo"
2863     ar_o='-out:$@'
2864 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2865     arflags="rq"
2866     ar_o='$@'
2867 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2868     arflags='-Xany -r -c'
2869     ar_o='$@'
2870 else
2871     arflags="rc"
2872     ar_o='$@'
2873 fi
2874
2875 add_cflags $extra_cflags
2876 add_asflags $extra_cflags
2877
2878 if test -n "$sysroot"; then
2879     case "$cc_type" in
2880         gcc|llvm_gcc|clang)
2881             add_cppflags --sysroot="$sysroot"
2882             add_ldflags --sysroot="$sysroot"
2883         ;;
2884         tms470)
2885             add_cppflags -I"$sysinclude"
2886             add_ldflags  --sysroot="$sysroot"
2887         ;;
2888     esac
2889 fi
2890
2891 if test "$cpu" = host; then
2892     enabled cross_compile &&
2893         die "--cpu=host makes no sense when cross-compiling."
2894
2895     case "$cc_type" in
2896         gcc|llvm_gcc)
2897             check_native(){
2898                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2899                 sed -n "/cc1.*$1=/{
2900                             s/.*$1=\\([^ ]*\\).*/\\1/
2901                             p
2902                             q
2903                         }" $TMPE
2904             }
2905             cpu=$(check_native -march || check_native -mcpu)
2906         ;;
2907     esac
2908
2909     test "${cpu:-host}" = host &&
2910         die "--cpu=host not supported with compiler $cc"
2911 fi
2912
2913 # Deal with common $arch aliases
2914 case "$arch" in
2915     aarch64|arm64)
2916         arch="aarch64"
2917     ;;
2918     arm*)
2919         arch="arm"
2920     ;;
2921     mips*|IP*)
2922         arch="mips"
2923     ;;
2924     parisc*|hppa*)
2925         arch="parisc"
2926     ;;
2927     "Power Macintosh"|ppc*|powerpc*)
2928         arch="ppc"
2929     ;;
2930     s390|s390x)
2931         arch="s390"
2932     ;;
2933     sh4|sh)
2934         arch="sh4"
2935     ;;
2936     sun4u|sparc*)
2937         arch="sparc"
2938     ;;
2939     tilegx|tile-gx)
2940         arch="tilegx"
2941     ;;
2942     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2943         arch="x86"
2944     ;;
2945 esac
2946
2947 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2948 enable $arch
2949
2950 # Add processor-specific flags
2951 if enabled aarch64; then
2952
2953     case $cpu in
2954         armv*)
2955             cpuflags="-march=$cpu"
2956         ;;
2957         *)
2958             cpuflags="-mcpu=$cpu"
2959         ;;
2960     esac
2961
2962 elif enabled alpha; then
2963
2964     cpuflags="-mcpu=$cpu"
2965
2966 elif enabled arm; then
2967
2968     check_arm_arch() {
2969         check_cpp_condition stddef.h \
2970             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2971             $cpuflags
2972     }
2973
2974     probe_arm_arch() {
2975         if   check_arm_arch 4;        then echo armv4;
2976         elif check_arm_arch 4T;       then echo armv4t;
2977         elif check_arm_arch 5;        then echo armv5;
2978         elif check_arm_arch 5E;       then echo armv5e;
2979         elif check_arm_arch 5T;       then echo armv5t;
2980         elif check_arm_arch 5TE;      then echo armv5te;
2981         elif check_arm_arch 5TEJ;     then echo armv5te;
2982         elif check_arm_arch 6;        then echo armv6;
2983         elif check_arm_arch 6J;       then echo armv6j;
2984         elif check_arm_arch 6K;       then echo armv6k;
2985         elif check_arm_arch 6Z;       then echo armv6z;
2986         elif check_arm_arch 6ZK;      then echo armv6zk;
2987         elif check_arm_arch 6T2;      then echo armv6t2;
2988         elif check_arm_arch 7;        then echo armv7;
2989         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2990         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2991         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2992         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2993         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2994         fi
2995     }
2996
2997     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2998
2999     case $cpu in
3000         armv*)
3001             cpuflags="-march=$cpu"
3002             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3003         ;;
3004         *)
3005             cpuflags="-mcpu=$cpu"
3006             case $cpu in
3007                 cortex-a*)                               subarch=armv7a  ;;
3008                 cortex-r*)                               subarch=armv7r  ;;
3009                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3010                 arm11*)                                  subarch=armv6   ;;
3011                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3012                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3013                 *)                             subarch=$(probe_arm_arch) ;;
3014             esac
3015         ;;
3016     esac
3017
3018     case "$subarch" in
3019         armv5t*)    enable fast_clz                ;;
3020         armv[6-8]*) enable fast_clz fast_unaligned ;;
3021     esac
3022
3023 elif enabled avr32; then
3024
3025     case $cpu in
3026         ap7[02]0[0-2])
3027             subarch="avr32_ap"
3028             cpuflags="-mpart=$cpu"
3029         ;;
3030         ap)
3031             subarch="avr32_ap"
3032             cpuflags="-march=$cpu"
3033         ;;
3034         uc3[ab]*)
3035             subarch="avr32_uc"
3036             cpuflags="-mcpu=$cpu"
3037         ;;
3038         uc)
3039             subarch="avr32_uc"
3040             cpuflags="-march=$cpu"
3041         ;;
3042     esac
3043
3044 elif enabled bfin; then
3045
3046     cpuflags="-mcpu=$cpu"
3047
3048 elif enabled mips; then
3049
3050     cpuflags="-march=$cpu"
3051
3052 elif enabled ppc; then
3053
3054     case $(tolower $cpu) in
3055         601|ppc601|powerpc601)
3056             cpuflags="-mcpu=601"
3057             disable altivec
3058         ;;
3059         603*|ppc603*|powerpc603*)
3060             cpuflags="-mcpu=603"
3061             disable altivec
3062         ;;
3063         604*|ppc604*|powerpc604*)
3064             cpuflags="-mcpu=604"
3065             disable altivec
3066         ;;
3067         g3|75*|ppc75*|powerpc75*)
3068             cpuflags="-mcpu=750"
3069             disable altivec
3070         ;;
3071         g4|745*|ppc745*|powerpc745*)
3072             cpuflags="-mcpu=7450"
3073         ;;
3074         74*|ppc74*|powerpc74*)
3075             cpuflags="-mcpu=7400"
3076         ;;
3077         g5|970|ppc970|powerpc970)
3078             cpuflags="-mcpu=970"
3079         ;;
3080         power[3-7]*)
3081             cpuflags="-mcpu=$cpu"
3082         ;;
3083         cell)
3084             cpuflags="-mcpu=cell"
3085             enable ldbrx
3086         ;;
3087         e500mc)
3088             cpuflags="-mcpu=e500mc"
3089             disable altivec
3090         ;;
3091         e500v2)
3092             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3093             disable altivec
3094         ;;
3095         e500)
3096             cpuflags="-mcpu=8540 -mhard-float"
3097             disable altivec
3098         ;;
3099     esac
3100
3101 elif enabled sparc; then
3102
3103     case $cpu in
3104         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3105             cpuflags="-mcpu=$cpu"
3106             disable vis
3107         ;;
3108         ultrasparc*|niagara[234])
3109             cpuflags="-mcpu=$cpu"
3110         ;;
3111     esac
3112
3113 elif enabled x86; then
3114
3115     case $cpu in
3116         i[345]86|pentium)
3117             cpuflags="-march=$cpu"
3118             disable mmx
3119         ;;
3120         # targets that do NOT support nopl and conditional mov (cmov)
3121         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3122             cpuflags="-march=$cpu"
3123             disable i686
3124         ;;
3125         # targets that do support nopl and conditional mov (cmov)
3126         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3127             cpuflags="-march=$cpu"
3128             enable i686
3129             enable fast_cmov
3130         ;;
3131         # targets that do support conditional mov but on which it's slow
3132         pentium4|pentium4m|prescott|nocona)
3133             cpuflags="-march=$cpu"
3134             enable i686
3135             disable fast_cmov
3136         ;;
3137     esac
3138
3139 fi
3140
3141 if [ "$cpu" != generic ]; then
3142     add_cflags  $cpuflags
3143     add_asflags $cpuflags
3144 fi
3145
3146 # compiler sanity check
3147 check_exec <<EOF
3148 int main(void){ return 0; }
3149 EOF
3150 if test "$?" != 0; then
3151     echo "$cc is unable to create an executable file."
3152     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3153         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3154         echo "Only do this if you know what cross compiling means."
3155     fi
3156     die "C compiler test failed."
3157 fi
3158
3159 add_cppflags -D_ISOC99_SOURCE
3160 check_cflags -std=c99
3161 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3162 #include <stdlib.h>
3163 EOF
3164 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3165 #include <stdlib.h>
3166 EOF
3167
3168 add_host_cppflags -D_ISOC99_SOURCE
3169 check_host_cflags -std=c99
3170 check_host_cflags -Wall
3171 check_host_cflags -O3
3172
3173 check_64bit(){
3174     arch32=$1
3175     arch64=$2
3176     expr=$3
3177     check_code cc "" "int test[2*($expr) - 1]" &&
3178         subarch=$arch64 || subarch=$arch32
3179 }
3180
3181 case "$arch" in
3182     aarch64|alpha|ia64)
3183         spic=$shared
3184     ;;
3185     mips)
3186         check_64bit mips mips64 '_MIPS_SIM > 1'
3187         spic=$shared
3188     ;;
3189     parisc)
3190         check_64bit parisc parisc64 'sizeof(void *) > 4'
3191         spic=$shared
3192     ;;
3193     ppc)
3194         check_64bit ppc ppc64 'sizeof(void *) > 4'
3195         spic=$shared
3196     ;;
3197     sparc)
3198         check_64bit sparc sparc64 'sizeof(void *) > 4'
3199         spic=$shared
3200     ;;
3201     x86)
3202         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3203         if test "$subarch" = "x86_64"; then
3204             spic=$shared
3205         fi
3206     ;;
3207 esac
3208
3209 enable $subarch
3210 enabled spic && enable_weak pic
3211
3212 # OS specific
3213 case $target_os in
3214     aix)
3215         SHFLAGS=-shared
3216         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3217         enabled shared && add_ldflags -Wl,-brtl
3218         ;;
3219     haiku)
3220         prefix_default="/boot/common"
3221         network_extralibs="-lnetwork"
3222         host_libs=
3223         ;;
3224     sunos)
3225         SHFLAGS='-shared -Wl,-h,$$(@F)'
3226         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3227         network_extralibs="-lsocket -lnsl"
3228         # When using suncc to build, the Solaris linker will mark
3229         # an executable with each instruction set encountered by
3230         # the Solaris assembler.  As our libraries contain their own
3231         # guards for processor-specific code, instead suppress
3232         # generation of the HWCAPS ELF section on Solaris x86 only.
3233         enabled_all suncc x86 &&
3234             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3235             add_ldflags -Wl,-M,mapfile
3236         nm_default='nm -P -g'
3237         ;;
3238     netbsd)
3239         disable symver
3240         oss_indev_extralibs="-lossaudio"
3241         oss_outdev_extralibs="-lossaudio"
3242         ;;
3243     openbsd|bitrig)
3244         disable symver
3245         SHFLAGS='-shared'
3246         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3247         SLIB_INSTALL_LINKS=
3248         oss_indev_extralibs="-lossaudio"
3249         oss_outdev_extralibs="-lossaudio"
3250         ;;
3251     dragonfly)
3252         disable symver
3253         ;;
3254     freebsd)
3255         ;;
3256     bsd/os)
3257         add_extralibs -lpoll -lgnugetopt
3258         ;;
3259     darwin)
3260         gas="gas-preprocessor.pl $cc"
3261         enabled ppc && add_asflags -force_cpusubtype_ALL
3262         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3263         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3264         add_ldflags -Wl,-dynamic,-search_paths_first
3265         SLIBSUF=".dylib"
3266         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3267         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3268         objformat="macho"
3269         enabled x86_64 && objformat="macho64"
3270         enabled_any pic shared ||
3271             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3272         ;;
3273     mingw32*)
3274         if test $target_os = "mingw32ce"; then
3275             disable network
3276         else
3277             target_os=mingw32
3278         fi
3279         LIBTARGET=i386
3280         if enabled x86_64; then
3281             LIBTARGET="i386:x86-64"
3282         elif enabled arm; then
3283             LIBTARGET=arm-wince
3284         fi
3285         check_ldflags -Wl,--nxcompat
3286         check_ldflags -Wl,--dynamicbase
3287         shlibdir_default="$bindir_default"
3288         SLIBPREF=""
3289         SLIBSUF=".dll"
3290         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3291         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3292         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3293         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3294         SLIB_INSTALL_LINKS=
3295         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3296         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3297         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3298         objformat="win32"
3299         dlltool="${cross_prefix}dlltool"
3300         ranlib=:
3301         enable dos_paths
3302         ;;
3303     win32|win64)
3304         disable symver
3305         if enabled shared; then
3306             # Link to the import library instead of the normal static library
3307             # for shared libs.
3308             LD_LIB='%.lib'
3309             # Cannot build both shared and static libs with MSVC or icl.
3310             disable static
3311         fi
3312         shlibdir_default="$bindir_default"
3313         SLIBPREF=""
3314         SLIBSUF=".dll"
3315         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3316         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3317         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3318         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3319         SLIB_INSTALL_LINKS=
3320         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3321         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3322         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3323         objformat="win32"
3324         ranlib=:
3325         enable dos_paths
3326         ;;
3327     cygwin*)
3328         target_os=cygwin
3329         shlibdir_default="$bindir_default"
3330         SLIBPREF="cyg"
3331         SLIBSUF=".dll"
3332         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3333         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3334         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3335         SLIB_INSTALL_LINKS=
3336         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3337         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3338         objformat="win32"
3339         enable dos_paths
3340         ;;
3341     *-dos|freedos|opendos)
3342         network_extralibs="-lsocket"
3343         objformat="coff"
3344         enable dos_paths
3345         add_cppflags -U__STRICT_ANSI__
3346         ;;
3347     linux)
3348         enable dv1394
3349         ;;
3350     irix*)
3351         target_os=irix
3352         ranlib="echo ignoring ranlib"
3353         ;;
3354     os/2*)
3355         ln_s="cp -f"
3356         objformat="aout"
3357         add_cppflags -D_GNU_SOURCE
3358         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3359         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3360         LIBSUF="_s.a"
3361         SLIBPREF=""
3362         SLIBSUF=".dll"
3363         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3364         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3365         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3366             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3367             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3368             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3369             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3370             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3371         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3372             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3373         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3374         enable dos_paths
3375         ;;
3376     gnu/kfreebsd)
3377         add_cppflags -D_BSD_SOURCE
3378         ;;
3379     gnu)
3380         ;;
3381     qnx)
3382         add_cppflags -D_QNX_SOURCE
3383         network_extralibs="-lsocket"
3384         ;;
3385     symbian)
3386         SLIBSUF=".dll"
3387         enable dos_paths
3388         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3389         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3390         add_ldflags -Wl,--target1-abs,--no-undefined \
3391                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3392                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3393         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3394                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3395                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3396         ;;
3397     osf1)
3398         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3399         ;;
3400     minix)
3401         ;;
3402     plan9)
3403         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3404                      -D_REENTRANT_SOURCE        \
3405                      -D_RESEARCH_SOURCE         \
3406                      -DFD_SETSIZE=96            \
3407                      -DHAVE_SOCK_OPTS
3408         add_compat strtod.o strtod=avpriv_strtod
3409         network_extralibs='-lbsd'
3410         exeobjs=compat/plan9/main.o
3411         disable avserver
3412         cp_f='cp'
3413         ;;
3414     none)
3415         ;;
3416     *)
3417         die "Unknown OS '$target_os'."
3418         ;;
3419 esac
3420
3421 # determine libc flavour
3422
3423 probe_libc(){
3424     pfx=$1
3425     pfx_no_=${pfx%_}
3426     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3427     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3428         eval ${pfx}libc_type=uclibc
3429         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3430     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3431         eval ${pfx}libc_type=glibc
3432         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3433     # MinGW headers can be installed on Cygwin, so check for newlib first.
3434     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3435         eval ${pfx}libc_type=newlib
3436         add_${pfx}cppflags -U__STRICT_ANSI__
3437     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3438     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3439         eval ${pfx}libc_type=mingw64
3440         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3441         eval test \$${pfx_no_}cc_type = "gcc" &&
3442             add_${pfx}cppflags -D__printf__=__gnu_printf__
3443     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3444          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3445         eval ${pfx}libc_type=mingw32
3446         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3447             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3448             die "ERROR: MinGW32 runtime version must be >= 3.15."
3449         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3450         eval test \$${pfx_no_}cc_type = "gcc" &&
3451             add_${pfx}cppflags -D__printf__=__gnu_printf__
3452     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3453         eval ${pfx}libc_type=msvcrt
3454         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3455         # 0x601 by default unless something else is set by the user.
3456         # This can easily lead to us detecting functions only present
3457         # in such new versions and producing binaries requiring windows 7.0.
3458         # Therefore explicitly set the default to XP unless the user has
3459         # set something else on the command line.
3460         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3461             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3462     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3463         eval ${pfx}libc_type=klibc
3464     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3465         eval ${pfx}libc_type=bionic
3466     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3467         eval ${pfx}libc_type=solaris
3468         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3469     fi
3470 }
3471
3472 probe_libc
3473 test -n "$libc_type" && enable libc_$libc_type
3474 probe_libc host_
3475 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3476
3477 case $libc_type in
3478     bionic)
3479         add_compat strtod.o strtod=avpriv_strtod
3480         ;;
3481     msvcrt)
3482         add_compat strtod.o strtod=avpriv_strtod
3483         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3484                                      _snprintf=avpriv_snprintf  \
3485                                      vsnprintf=avpriv_vsnprintf
3486         ;;
3487 esac
3488
3489 # hacks for compiler/libc/os combinations
3490
3491 if enabled_all tms470 libc_glibc; then
3492     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3493     add_cppflags -D__USER_LABEL_PREFIX__=
3494     add_cppflags -D__builtin_memset=memset
3495     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3496     add_cflags   -pds=48    # incompatible redefinition of macro
3497 fi
3498
3499 if enabled_all ccc libc_glibc; then
3500     add_ldflags -Wl,-z,now  # calls to libots crash without this
3501 fi
3502
3503 esc(){
3504     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3505 }
3506
3507 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3508
3509 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3510
3511 set_default $PATHS_LIST
3512 set_default nm
3513
3514 # we need to build at least one lib type
3515 if ! enabled_any static shared; then
3516     cat <<EOF
3517 At least one library type must be built.
3518 Specify --enable-static to build the static libraries or --enable-shared to
3519 build the shared libraries as well. To only build the shared libraries specify
3520 --disable-static in addition to --enable-shared.
3521 EOF
3522     exit 1;
3523 fi
3524
3525 die_license_disabled() {
3526     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3527 }
3528
3529 die_license_disabled gpl libcdio
3530 die_license_disabled gpl libx264
3531 die_license_disabled gpl libxavs
3532 die_license_disabled gpl libxvid
3533 die_license_disabled gpl x11grab
3534
3535 die_license_disabled nonfree libfaac
3536 die_license_disabled nonfree libfdk_aac
3537 die_license_disabled nonfree openssl
3538
3539 die_license_disabled version3 libopencore_amrnb
3540 die_license_disabled version3 libopencore_amrwb
3541 die_license_disabled version3 libvo_aacenc
3542 die_license_disabled version3 libvo_amrwbenc
3543
3544 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3545
3546 disabled optimizations || check_cflags -fomit-frame-pointer
3547
3548 enable_weak_pic() {
3549     disabled pic && return
3550     enable pic
3551     add_cppflags -DPIC
3552     case "$target_os" in
3553     mingw*|cygwin*)
3554         ;;
3555     *)
3556         add_cflags -fPIC
3557         ;;
3558     esac
3559     add_asflags  -fPIC
3560 }
3561
3562 enabled pic && enable_weak_pic
3563
3564 check_cc <<EOF || die "Symbol mangling check failed."
3565 int ff_extern;
3566 EOF
3567 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3568 extern_prefix=${sym%%ff_extern*}
3569
3570 check_cc <<EOF && enable_weak inline_asm
3571 void foo(void) { __asm__ volatile ("" ::); }
3572 EOF
3573
3574 _restrict=
3575 for restrict_keyword in restrict __restrict__ __restrict; do
3576     check_cc <<EOF && _restrict=$restrict_keyword && break
3577 void foo(char * $restrict_keyword p);
3578 EOF
3579 done
3580
3581 check_cc <<EOF && enable pragma_deprecated
3582 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3583 EOF
3584
3585 check_cc <<EOF && enable attribute_packed
3586 struct { int x; } __attribute__((packed)) x;
3587 EOF
3588
3589 check_cc <<EOF && enable attribute_may_alias
3590 union { int x; } __attribute__((may_alias)) x;
3591 EOF
3592
3593 check_cc <<EOF || die "endian test failed"
3594 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3595 EOF
3596 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3597
3598 check_inline_asm inline_asm_labels '"1:\n"'
3599
3600 if enabled aarch64; then
3601     # internal assembler in clang 3.3 does not support this instruction
3602     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3603     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3604
3605     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3606
3607 elif enabled alpha; then
3608
3609     check_cflags -mieee
3610
3611 elif enabled arm; then
3612
3613     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3614     enabled thumb && check_cflags -mthumb || check_cflags -marm
3615     nogas=die
3616
3617     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3618         enable vfp_args
3619     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3620         case "${cross_prefix:-$cc}" in
3621             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3622             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3623 __asm__ (".eabi_attribute 28, 1");
3624 int main(void) { return 0; }
3625 EOF
3626         esac
3627         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3628     fi
3629
3630     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3631     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3632     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3633     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3634     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3635     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3636
3637     [ $target_os = linux ] ||
3638         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3639             $ARCH_EXT_LIST_ARM
3640
3641     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3642     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3643
3644     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3645
3646 elif enabled mips; then
3647
3648     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3649
3650 elif enabled parisc; then
3651
3652     if enabled gcc; then
3653         case $($cc -dumpversion) in
3654             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3655         esac
3656     fi
3657
3658 elif enabled ppc; then
3659
3660     enable local_aligned_8 local_aligned_16
3661
3662     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3663     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3664     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3665     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3666
3667     # AltiVec flags: The FSF version of GCC differs from the Apple version
3668     if enabled altivec; then
3669         nogas=warn
3670         check_cflags -maltivec -mabi=altivec &&
3671         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3672         check_cflags -faltivec
3673
3674         # check if our compiler supports Motorola AltiVec C API
3675         check_cc <<EOF || disable altivec
3676 $inc_altivec_h
3677 int main(void) {
3678     vector signed int v1 = (vector signed int) { 0 };
3679     vector signed int v2 = (vector signed int) { 1 };
3680     v1 = vec_add(v1, v2);
3681     return 0;
3682 }
3683 EOF
3684
3685         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3686     fi
3687
3688 elif enabled sparc; then
3689
3690     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3691
3692 elif enabled x86; then
3693
3694     check_builtin rdtsc    intrin.h   "__rdtsc()"
3695     check_builtin mm_empty mmintrin.h "_mm_empty()"
3696
3697     enable local_aligned_8 local_aligned_16
3698
3699     # check whether EBP is available on x86
3700     # As 'i' is stored on the stack, this program will crash
3701     # if the base pointer is used to access it because the
3702     # base pointer is cleared in the inline assembly code.
3703     check_exec_crash <<EOF && enable ebp_available
3704 volatile int i=0;
3705 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3706 return i;
3707 EOF
3708
3709     # check whether EBX is available on x86
3710     check_inline_asm ebx_available '""::"b"(0)' &&
3711         check_inline_asm ebx_available '"":::"%ebx"'
3712
3713     # check whether xmm clobbers are supported
3714     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3715
3716     # check whether binutils is new enough to compile SSSE3/MMXEXT
3717     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3718     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3719
3720     if ! disabled_any asm mmx yasm; then
3721         if check_cmd $yasmexe --version; then
3722             enabled x86_64 && yasm_extra="-m amd64"
3723             yasm_debug="-g dwarf2"
3724         elif check_cmd nasm -v; then
3725             yasmexe=nasm
3726             yasm_debug="-g -F dwarf"
3727             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3728         fi
3729
3730         YASMFLAGS="-f $objformat $yasm_extra"
3731         enabled pic               && append YASMFLAGS "-DPIC"
3732         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3733         case "$objformat" in
3734             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3735         esac
3736
3737         check_yasm "movbe ecx, [5]" && enable yasm ||
3738             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3739         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3740         check_yasm "CPU amdnop" && enable cpunop
3741     fi
3742
3743     case "$cpu" in
3744         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3745             disable fast_clz
3746         ;;
3747     esac
3748
3749 fi
3750
3751 if enabled asm; then
3752     as=${gas:=$as}
3753     check_as <<EOF && enable gnu_as || \
3754         $nogas "GNU assembler not found, install gas-preprocessor"
3755 .macro m n
3756 \n: .int 0
3757 .endm
3758 m x
3759 EOF
3760 fi
3761
3762 check_ldflags -Wl,--as-needed
3763
3764 if check_func dlopen; then
3765     ldl=
3766 elif check_func dlopen -ldl; then
3767     ldl=-ldl
3768 fi
3769
3770 if ! disabled network; then
3771     check_type "sys/types.h sys/socket.h" socklen_t
3772     check_type netdb.h "struct addrinfo"
3773     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3774     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3775     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3776     check_type netinet/in.h "struct sockaddr_in6"
3777     check_type poll.h "struct pollfd"
3778     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3779     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3780     check_type netinet/sctp.h "struct sctp_event_subscribe"
3781     check_func getaddrinfo $network_extralibs
3782     check_func getservbyport $network_extralibs
3783     # Prefer arpa/inet.h over winsock2
3784     if check_header arpa/inet.h ; then
3785         check_func closesocket
3786     elif check_header winsock2.h ; then
3787         check_func_headers winsock2.h closesocket -lws2 &&
3788             network_extralibs="-lws2" ||
3789         { check_func_headers winsock2.h closesocket -lws2_32 &&
3790             network_extralibs="-lws2_32"; } || disable winsock2_h network
3791         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3792         check_type ws2tcpip.h socklen_t
3793         check_type ws2tcpip.h "struct addrinfo"
3794         check_type ws2tcpip.h "struct group_source_req"
3795         check_type ws2tcpip.h "struct ip_mreq_source"
3796         check_type ws2tcpip.h "struct ipv6_mreq"
3797         check_type winsock2.h "struct pollfd"
3798         check_type ws2tcpip.h "struct sockaddr_in6"
3799         check_type ws2tcpip.h "struct sockaddr_storage"
3800         check_struct winsock2.h "struct sockaddr" sa_len
3801     else
3802         disable network
3803     fi
3804 fi
3805
3806 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3807 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3808
3809 check_func  fcntl
3810 check_func  fork
3811 check_func_headers stdlib.h getenv
3812 check_func  gethrtime
3813 check_func  getopt
3814 check_func  getrusage
3815 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3816 check_func  gettimeofday
3817 check_func  inet_aton $network_extralibs
3818 check_func  isatty
3819 check_func  localtime_r
3820 check_func  ${malloc_prefix}memalign            && enable memalign
3821 check_func  mkstemp
3822 check_func  mmap
3823 check_func  mprotect
3824 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3825 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3826 check_func  setrlimit
3827 check_func  strerror_r
3828 check_func  strptime
3829 check_func  strtok_r
3830 check_func  sched_getaffinity
3831 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3832 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3833 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3834 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3835 check_func  sysconf
3836 check_func  sysctl
3837 check_func  usleep
3838 check_func_headers io.h setmode
3839 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3840 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3841 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3842 check_func_headers windows.h GetProcessAffinityMask
3843 check_func_headers windows.h GetProcessTimes
3844 check_func_headers windows.h GetSystemTimeAsFileTime
3845 check_func_headers windows.h MapViewOfFile
3846 check_func_headers windows.h SetConsoleTextAttribute
3847 check_func_headers windows.h Sleep
3848 check_func_headers windows.h VirtualAlloc
3849
3850 check_header direct.h
3851 check_header dlfcn.h
3852 check_header dxva.h
3853 check_header dxva2api.h
3854 check_header io.h
3855 check_header malloc.h
3856 check_header poll.h
3857 check_header sys/mman.h
3858 check_header sys/param.h
3859 check_header sys/resource.h
3860 check_header sys/select.h
3861 check_header sys/time.h
3862 check_header sys/un.h
3863 check_header unistd.h
3864 check_header vdpau/vdpau.h
3865 check_header vdpau/vdpau_x11.h
3866 check_header VideoDecodeAcceleration/VDADecoder.h
3867 check_header windows.h
3868 check_header X11/extensions/XvMClib.h
3869
3870 if ! disabled w32threads && ! enabled pthreads; then
3871     check_func_headers "windows.h process.h" _beginthreadex &&
3872         enable w32threads || disable w32threads
3873 fi
3874
3875 # check for some common methods of building with pthread support
3876 # do this before the optional library checks as some of them require pthreads
3877 if ! disabled pthreads && ! enabled w32threads; then
3878     enable pthreads
3879     if check_func pthread_join -pthread; then
3880         add_cflags -pthread
3881         add_extralibs -pthread
3882     elif check_func pthread_join -pthreads; then
3883         add_cflags -pthreads
3884         add_extralibs -pthreads
3885     elif check_func pthread_join -lpthreadGC2; then
3886         add_extralibs -lpthreadGC2
3887     elif check_lib pthread.h pthread_join -lpthread; then
3888         :
3889     elif ! check_func pthread_join; then
3890         disable pthreads
3891     fi
3892 fi
3893
3894 for thread in $THREADS_LIST; do
3895     if enabled $thread; then
3896         test -n "$thread_type" &&
3897             die "ERROR: Only one thread type must be selected." ||
3898             thread_type="$thread"
3899     fi
3900 done
3901
3902 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3903 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3904
3905 check_lib math.h sin -lm && LIBM="-lm"
3906 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3907
3908 atan2f_args=2
3909 ldexpf_args=2
3910 powf_args=2
3911
3912 for func in $MATH_FUNCS; do
3913     eval check_mathfunc $func \${${func}_args:-1}
3914 done
3915
3916 # these are off by default, so fail if requested and not available
3917 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
3918                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
3919                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
3920 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3921 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3922 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3923 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3924 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
3925 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3926                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3927                                done || die "ERROR: libgsm not found"; }
3928 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3929 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3930 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3931 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3932 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3933 enabled libopenjpeg       && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3934 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3935 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3936 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3937 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3938 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3939 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3940 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3941 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3942 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3943 enabled libvpx            && {
3944     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3945                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3946     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3947                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3948     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3949     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3950 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3951 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
3952 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3953                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3954                                die "ERROR: libx264 version must be >= 0.118."; }
3955 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3956 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3957 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3958                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3959                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3960                                die "ERROR: openssl not found"; }
3961
3962 if enabled gnutls; then
3963     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3964     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3965 fi
3966
3967 # libdc1394 check
3968 if enabled libdc1394; then
3969     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3970         enable libdc1394_2; } ||
3971     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3972         enable libdc1394_1; } ||
3973     die "ERROR: No version of libdc1394 found "
3974 fi
3975
3976 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3977     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3978     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3979     enable sdl
3980 fi
3981
3982 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
3983 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3984
3985 check_header linux/fb.h
3986 check_header linux/videodev2.h
3987 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3988
3989 check_header sys/videoio.h
3990
3991 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3992 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3993 # w32api 3.12 had it defined wrong
3994 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3995
3996 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3997 { check_header dev/bktr/ioctl_meteor.h &&
3998   check_header dev/bktr/ioctl_bt848.h; } ||
3999 { check_header machine/ioctl_meteor.h &&
4000   check_header machine/ioctl_bt848.h; } ||
4001 { check_header dev/video/meteor/ioctl_meteor.h &&
4002   check_header dev/video/bktr/ioctl_bt848.h; } ||
4003 check_header dev/ic/bt8xx.h
4004
4005 check_header sndio.h
4006 check_header sys/soundcard.h
4007 check_header soundcard.h
4008
4009 enabled_any alsa_indev alsa_outdev &&
4010     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4011
4012 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4013     check_func jack_port_get_latency_range -ljack
4014
4015 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4016
4017 if enabled libcdio; then
4018     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4019     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4020 fi
4021
4022 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4023
4024 enabled x11grab                                           &&
4025 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4026 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4027 { enabled xlib || die "ERROR: Xlib not found"; }
4028
4029 enabled vdpau &&
4030     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4031     disable vdpau
4032
4033 enabled vdpau && enabled xlib &&
4034     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4035     enable vdpau_x11
4036
4037 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4038
4039 # add some useful compiler flags if supported
4040 check_cflags -Wdeclaration-after-statement
4041 check_cflags -Wall
4042 check_cflags -Wdisabled-optimization
4043 check_cflags -Wpointer-arith
4044 check_cflags -Wredundant-decls
4045 check_cflags -Wcast-qual
4046 check_cflags -Wwrite-strings
4047 check_cflags -Wtype-limits
4048 check_cflags -Wundef
4049 check_cflags -Wmissing-prototypes
4050 check_cflags -Wstrict-prototypes
4051 enabled extra_warnings && check_cflags -Winline
4052
4053 check_disable_warning(){
4054     warning_flag=-W${1#-Wno-}
4055     test_cflags $warning_flag && add_cflags $1
4056 }
4057
4058 check_disable_warning -Wno-parentheses
4059 check_disable_warning -Wno-switch
4060 check_disable_warning -Wno-format-zero-length
4061 check_disable_warning -Wno-pointer-sign
4062
4063 # add some linker flags
4064 check_ldflags -Wl,--warn-common
4065 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4066 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4067
4068 # add some strip flags
4069 # -wN '..@*' is more selective than -x, but not available everywhere.
4070 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4071
4072 enabled neon_clobber_test &&
4073     check_ldflags -Wl,--wrap,avcodec_open2              \
4074                   -Wl,--wrap,avcodec_decode_audio4      \
4075                   -Wl,--wrap,avcodec_decode_video2      \
4076                   -Wl,--wrap,avcodec_decode_subtitle2   \
4077                   -Wl,--wrap,avcodec_encode_audio2      \
4078                   -Wl,--wrap,avcodec_encode_video2      \
4079                   -Wl,--wrap,avcodec_encode_subtitle    \
4080                   -Wl,--wrap,avresample_convert ||
4081     disable neon_clobber_test
4082
4083 enabled xmm_clobber_test &&
4084     check_ldflags -Wl,--wrap,avcodec_open2              \
4085                   -Wl,--wrap,avcodec_decode_audio4      \
4086                   -Wl,--wrap,avcodec_decode_video2      \
4087                   -Wl,--wrap,avcodec_decode_subtitle2   \
4088                   -Wl,--wrap,avcodec_encode_audio2      \
4089                   -Wl,--wrap,avcodec_encode_video2      \
4090                   -Wl,--wrap,avcodec_encode_subtitle    \
4091                   -Wl,--wrap,avresample_convert         \
4092                   -Wl,--wrap,sws_scale ||
4093     disable xmm_clobber_test
4094
4095 echo "X{};" > $TMPV
4096 if test_ldflags -Wl,--version-script,$TMPV; then
4097     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4098     check_cc <<EOF && enable symver_asm_label
4099 void ff_foo(void) __asm__ ("av_foo@VERSION");
4100 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4101 EOF
4102     check_cc <<EOF && enable symver_gnu_asm
4103 __asm__(".symver ff_foo,av_foo@VERSION");
4104 void ff_foo(void) {}
4105 EOF
4106 fi
4107
4108 if [ -z "$optflags" ]; then
4109     if enabled small; then
4110         optflags=$cflags_size
4111     elif enabled optimizations; then
4112         optflags=$cflags_speed
4113     else
4114         optflags=$cflags_noopt
4115     fi
4116 fi
4117
4118 check_optflags(){
4119     check_cflags "$@"
4120     enabled lto && check_ldflags "$@"
4121 }
4122
4123
4124 if enabled lto; then
4125     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4126     check_cflags  -flto
4127     check_ldflags -flto $cpuflags
4128 fi
4129
4130 check_optflags $optflags
4131 check_optflags -fno-math-errno
4132 check_optflags -fno-signed-zeros
4133
4134 if enabled icc; then
4135     # Just warnings, no remarks
4136     check_cflags -w1
4137     # -wd: Disable following warnings
4138     # 144, 167, 556: -Wno-pointer-sign
4139     # 1292: attribute "foo" ignored
4140     # 1419: external declaration in primary source file
4141     # 10006: ignoring unknown option -fno-signed-zeros
4142     # 10148: ignoring unknown option -Wno-parentheses
4143     # 10156: ignoring option '-W'; no argument required
4144     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4145     # 11030: Warning unknown option --as-needed
4146     # 10156: ignoring option '-export'; no argument required
4147     check_ldflags -wd10156,11030
4148     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4149     enable ebp_available
4150     if enabled x86_32; then
4151         icc_version=$($cc -dumpversion)
4152         test ${icc_version%%.*} -ge 11 &&
4153             check_cflags -falign-stack=maintain-16-byte ||
4154             disable aligned_stack
4155     fi
4156 elif enabled ccc; then
4157     # disable some annoying warnings
4158     add_cflags -msg_disable bitnotint
4159     add_cflags -msg_disable mixfuncvoid
4160     add_cflags -msg_disable nonstandcast
4161     add_cflags -msg_disable unsupieee
4162 elif enabled gcc; then
4163     check_optflags -fno-tree-vectorize
4164     check_cflags -Werror=implicit-function-declaration
4165     check_cflags -Werror=missing-prototypes
4166     check_cflags -Werror=return-type
4167     check_cflags -Werror=declaration-after-statement
4168     check_cflags -Werror=vla
4169     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4170 elif enabled llvm_gcc; then
4171     check_cflags -mllvm -stack-alignment=16
4172 elif enabled clang; then
4173     check_cflags -mllvm -stack-alignment=16
4174     check_cflags -Qunused-arguments
4175     check_cflags -Werror=implicit-function-declaration
4176     check_cflags -Werror=missing-prototypes
4177     check_cflags -Werror=return-type
4178 elif enabled cparser; then
4179     add_cflags -Wno-missing-variable-declarations
4180     add_cflags -Wno-empty-statement
4181 elif enabled armcc; then
4182     # 2523: use of inline assembler is deprecated
4183     add_cflags -W${armcc_opt},--diag_suppress=2523
4184     add_cflags -W${armcc_opt},--diag_suppress=1207
4185     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4186     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4187     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4188     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4189 elif enabled tms470; then
4190     add_cflags -pds=824 -pds=837
4191     disable inline_asm
4192 elif enabled pathscale; then
4193     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4194 elif enabled_any msvc icl; then
4195     enabled x86_32 && disable aligned_stack
4196     enabled_all x86_32 debug && add_cflags -Oy-
4197     enabled debug && add_ldflags -debug
4198     enable pragma_deprecated
4199     if enabled icl; then
4200         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4201         # (correctly) on icl 13.x.
4202         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4203             add_cflags -Qansi-alias
4204         # icl will pass the inline asm tests but inline asm is currently
4205         # not supported (build will fail)
4206         disable inline_asm
4207     fi
4208 fi
4209
4210 case $target_os in
4211     osf1)
4212         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4213     ;;
4214     plan9)
4215         add_cppflags -Dmain=plan9_main
4216     ;;
4217 esac
4218
4219 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4220
4221 check_deps $CONFIG_LIST       \
4222            $CONFIG_EXTRA      \
4223            $HAVE_LIST         \
4224            $ALL_COMPONENTS    \
4225
4226 ! enabled_any memalign posix_memalign aligned_malloc &&
4227     enabled_any $need_memalign && enable memalign_hack
4228
4229 echo "install prefix            $prefix"
4230 echo "source path               $source_path"
4231 echo "C compiler                $cc"
4232 echo "C library                 $libc_type"
4233 if test "$host_cc" != "$cc"; then
4234     echo "host C compiler           $host_cc"
4235     echo "host C library            $host_libc_type"
4236 fi
4237 echo "ARCH                      $arch ($cpu)"
4238 if test "$build_suffix" != ""; then
4239     echo "build suffix              $build_suffix"
4240 fi
4241 if test "$extra_version" != ""; then
4242     echo "version string suffix     $extra_version"
4243 fi
4244 echo "big-endian                ${bigendian-no}"
4245 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4246 if enabled x86; then
4247     echo "${yasmexe}                      ${yasm-no}"
4248     echo "MMX enabled               ${mmx-no}"
4249     echo "MMXEXT enabled            ${mmxext-no}"
4250     echo "3DNow! enabled            ${amd3dnow-no}"
4251     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4252     echo "SSE enabled               ${sse-no}"
4253     echo "SSSE3 enabled             ${ssse3-no}"
4254     echo "AVX enabled               ${avx-no}"
4255     echo "FMA4 enabled              ${fma4-no}"
4256     echo "i686 features enabled     ${i686-no}"
4257     echo "CMOV is fast              ${fast_cmov-no}"
4258     echo "EBX available             ${ebx_available-no}"
4259     echo "EBP available             ${ebp_available-no}"
4260 fi
4261 if enabled aarch64; then
4262     echo "NEON enabled              ${neon-no}"
4263     echo "VFP enabled               ${vfp-no}"
4264 fi
4265 if enabled arm; then
4266     echo "ARMv5TE enabled           ${armv5te-no}"
4267     echo "ARMv6 enabled             ${armv6-no}"
4268     echo "ARMv6T2 enabled           ${armv6t2-no}"
4269     echo "VFP enabled               ${vfp-no}"
4270     echo "NEON enabled              ${neon-no}"
4271 fi
4272 if enabled ppc; then
4273     echo "AltiVec enabled           ${altivec-no}"
4274     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4275     echo "dcbzl available           ${dcbzl-no}"
4276 fi
4277 if enabled sparc; then
4278     echo "VIS enabled               ${vis-no}"
4279 fi
4280 echo "debug symbols             ${debug-no}"
4281 echo "optimize for size         ${small-no}"
4282 echo "optimizations             ${optimizations-no}"
4283 echo "static                    ${static-no}"
4284 echo "shared                    ${shared-no}"
4285 echo "new filter support        ${avfilter-no}"
4286 echo "network support           ${network-no}"
4287 echo "threading support         ${thread_type-no}"
4288 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4289 echo "SDL support               ${sdl-no}"
4290 test -n "$random_seed" &&
4291     echo "random seed               ${random_seed}"
4292 echo
4293
4294 echo "External libraries:"
4295 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4296 echo
4297
4298 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4299     echo "Enabled ${type}s:"
4300     eval list=\$$(toupper $type)_LIST
4301     print_enabled '_*' $list | print_3_columns
4302     echo
4303 done
4304
4305 license="LGPL version 2.1 or later"
4306 if enabled nonfree; then
4307     license="nonfree and unredistributable"
4308 elif enabled gplv3; then
4309     license="GPL version 3 or later"
4310 elif enabled lgplv3; then
4311     license="LGPL version 3 or later"
4312 elif enabled gpl; then
4313     license="GPL version 2 or later"
4314 fi
4315
4316 echo "License: $license"
4317
4318 echo "Creating config.mak and config.h..."
4319
4320 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4321
4322 config_files="$TMPH config.mak"
4323
4324 cat > config.mak <<EOF
4325 # Automatically generated by configure - do not modify!
4326 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4327 prefix=$prefix
4328 LIBDIR=\$(DESTDIR)$libdir
4329 SHLIBDIR=\$(DESTDIR)$shlibdir
4330 INCDIR=\$(DESTDIR)$incdir
4331 BINDIR=\$(DESTDIR)$bindir
4332 DATADIR=\$(DESTDIR)$datadir
4333 DOCDIR=\$(DESTDIR)$docdir
4334 MANDIR=\$(DESTDIR)$mandir
4335 SRC_PATH=$source_path
4336 CC_IDENT=$cc_ident
4337 ARCH=$arch
4338 CC=$cc
4339 AS=$as
4340 LD=$ld
4341 DEPCC=$dep_cc
4342 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4343 DEPAS=$as
4344 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4345 YASM=$yasmexe
4346 DEPYASM=$yasmexe
4347 AR=$ar
4348 ARFLAGS=$arflags
4349 AR_O=$ar_o
4350 RANLIB=$ranlib
4351 STRIP=$strip
4352 LN_S=$ln_s
4353 CPPFLAGS=$CPPFLAGS
4354 CFLAGS=$CFLAGS
4355 ASFLAGS=$ASFLAGS
4356 AS_C=$AS_C
4357 AS_O=$AS_O
4358 CC_C=$CC_C
4359 CC_E=$CC_E
4360 CC_O=$CC_O
4361 LD_O=$LD_O
4362 LD_LIB=$LD_LIB
4363 LD_PATH=$LD_PATH
4364 DLLTOOL=$dlltool
4365 LDFLAGS=$LDFLAGS
4366 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4367 STRIPFLAGS=$STRIPFLAGS
4368 YASMFLAGS=$YASMFLAGS
4369 BUILDSUF=$build_suffix
4370 FULLNAME=$FULLNAME
4371 LIBPREF=$LIBPREF
4372 LIBSUF=$LIBSUF
4373 LIBNAME=$LIBNAME
4374 SLIBPREF=$SLIBPREF
4375 SLIBSUF=$SLIBSUF
4376 EXESUF=$EXESUF
4377 EXTRA_VERSION=$extra_version
4378 CCDEP=$CCDEP
4379 CCDEP_FLAGS=$CCDEP_FLAGS
4380 ASDEP=$ASDEP
4381 ASDEP_FLAGS=$ASDEP_FLAGS
4382 CC_DEPFLAGS=$CC_DEPFLAGS
4383 AS_DEPFLAGS=$AS_DEPFLAGS
4384 HOSTCC=$host_cc
4385 HOSTLD=$host_ld
4386 HOSTCFLAGS=$host_cflags
4387 HOSTCPPFLAGS=$host_cppflags
4388 HOSTEXESUF=$HOSTEXESUF
4389 HOSTLDFLAGS=$host_ldflags
4390 HOSTLIBS=$host_libs
4391 DEPHOSTCC=$host_cc
4392 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4393 HOSTCCDEP=$HOSTCCDEP
4394 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4395 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4396 HOSTCC_C=$HOSTCC_C
4397 HOSTCC_O=$HOSTCC_O
4398 HOSTLD_O=$HOSTLD_O
4399 TARGET_EXEC=$target_exec $target_exec_args
4400 TARGET_PATH=$target_path
4401 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4402 LIBS-avplay=$sdl_libs
4403 CFLAGS-avplay=$sdl_cflags
4404 ZLIB=$($ldflags_filter -lz)
4405 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4406 EXTRALIBS=$extralibs
4407 COMPAT_OBJS=$compat_objs
4408 EXEOBJS=$exeobjs
4409 INSTALL=install
4410 LIBTARGET=${LIBTARGET}
4411 SLIBNAME=${SLIBNAME}
4412 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4413 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4414 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4415 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4416 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4417 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4418 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4419 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4420 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4421 EOF
4422
4423 get_version(){
4424     lcname=lib${1}
4425     name=$(toupper $lcname)
4426     file=$source_path/$lcname/version.h
4427     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4428     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4429     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4430     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4431     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4432 }
4433
4434 map 'get_version $v' $LIBRARY_LIST
4435
4436 cat > $TMPH <<EOF
4437 /* Automatically generated by configure - do not modify! */
4438 #ifndef LIBAV_CONFIG_H
4439 #define LIBAV_CONFIG_H
4440 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4441 #define LIBAV_LICENSE "$(c_escape $license)"
4442 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4443 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4444 #define restrict $_restrict
4445 #define EXTERN_PREFIX "${extern_prefix}"
4446 #define EXTERN_ASM ${extern_prefix}
4447 #define SLIBSUF "$SLIBSUF"
4448 EOF
4449
4450 test -n "$malloc_prefix" &&
4451     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4452
4453 if enabled yasm; then
4454     append config_files $TMPASM
4455     printf '' >$TMPASM
4456 fi
4457
4458 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4459
4460 print_config ARCH_   "$config_files" $ARCH_LIST
4461 print_config HAVE_   "$config_files" $HAVE_LIST
4462 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4463                                      $CONFIG_EXTRA      \
4464                                      $ALL_COMPONENTS    \
4465
4466 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4467
4468 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4469 cp_if_changed $TMPH config.h
4470 touch .config
4471
4472 enabled yasm && cp_if_changed $TMPASM config.asm
4473
4474 cat > $TMPH <<EOF
4475 /* Generated by ffconf */
4476 #ifndef AVUTIL_AVCONFIG_H
4477 #define AVUTIL_AVCONFIG_H
4478 EOF
4479
4480 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4481
4482 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4483
4484 cp_if_changed $TMPH libavutil/avconfig.h
4485
4486 test -n "$WARNINGS" && printf "\n$WARNINGS"
4487
4488 # build pkg-config files
4489
4490 pkgconfig_generate(){
4491     name=$1
4492     shortname=${name#lib}${build_suffix}
4493     comment=$2
4494     version=$3
4495     libs=$4
4496     requires=$5
4497     enabled ${name#lib} || return 0
4498     mkdir -p $name
4499     cat <<EOF > $name/$name.pc
4500 prefix=$prefix
4501 exec_prefix=\${prefix}
4502 libdir=$libdir
4503 includedir=$incdir
4504
4505 Name: $name
4506 Description: $comment
4507 Version: $version
4508 Requires: $(enabled shared || echo $requires)
4509 Requires.private: $(enabled shared && echo $requires)
4510 Conflicts:
4511 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4512 Libs.private: $(enabled shared && echo $libs)
4513 Cflags: -I\${includedir}
4514 EOF
4515     cat <<EOF > $name/$name-uninstalled.pc
4516 prefix=
4517 exec_prefix=
4518 libdir=\${pcfiledir}
4519 includedir=${source_path}
4520
4521 Name: $name
4522 Description: $comment
4523 Version: $version
4524 Requires: $requires
4525 Conflicts:
4526 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4527 Cflags: -I\${includedir}
4528 EOF
4529 }
4530
4531 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4532 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4533 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4534 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4535
4536 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4537 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4538 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4539 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4540 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4541 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4542 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"