configure: do not link libraries against program-specific dependencies
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105
106 Program options:
107   --disable-programs       do not build command line programs
108   --disable-avconv         disable avconv build
109   --disable-avplay         disable avplay build
110   --disable-avprobe        disable avprobe build
111   --disable-avserver       disable avserver build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-avdevice       disable libavdevice build
116   --disable-avcodec        disable libavcodec build
117   --disable-avformat       disable libavformat build
118   --disable-avutil         disable libavutil build
119   --disable-swscale        disable libswscale build
120   --disable-avfilter       disable video filter support [no]
121   --disable-avresample     disable libavresample build [no]
122   --disable-pthreads       disable pthreads [auto]
123   --disable-w32threads     disable Win32 threads [auto]
124   --disable-network        disable network support [no]
125   --disable-dct            disable DCT code
126   --disable-error-resilience disable error resilience code
127   --disable-lsp            disable LSP code
128   --disable-lzo            disable LZO decoder code
129   --disable-mdct           disable MDCT code
130   --disable-rdft           disable RDFT code
131   --disable-fft            disable FFT code
132
133 Hardware accelerators:
134   --enable-dxva2           enable DXVA2 code
135   --enable-vaapi           enable VAAPI code
136   --enable-vda             enable VDA code
137   --enable-vdpau           enable VDPAU code
138
139 Individual component options:
140   --disable-everything     disable all components listed below
141   --disable-encoder=NAME   disable encoder NAME
142   --enable-encoder=NAME    enable encoder NAME
143   --disable-encoders       disable all encoders
144   --disable-decoder=NAME   disable decoder NAME
145   --enable-decoder=NAME    enable decoder NAME
146   --disable-decoders       disable all decoders
147   --disable-hwaccel=NAME   disable hwaccel NAME
148   --enable-hwaccel=NAME    enable hwaccel NAME
149   --disable-hwaccels       disable all hwaccels
150   --disable-muxer=NAME     disable muxer NAME
151   --enable-muxer=NAME      enable muxer NAME
152   --disable-muxers         disable all muxers
153   --disable-demuxer=NAME   disable demuxer NAME
154   --enable-demuxer=NAME    enable demuxer NAME
155   --disable-demuxers       disable all demuxers
156   --enable-parser=NAME     enable parser NAME
157   --disable-parser=NAME    disable parser NAME
158   --disable-parsers        disable all parsers
159   --enable-bsf=NAME        enable bitstream filter NAME
160   --disable-bsf=NAME       disable bitstream filter NAME
161   --disable-bsfs           disable all bitstream filters
162   --enable-protocol=NAME   enable protocol NAME
163   --disable-protocol=NAME  disable protocol NAME
164   --disable-protocols      disable all protocols
165   --enable-indev=NAME      enable input device NAME
166   --disable-indev=NAME     disable input device NAME
167   --disable-indevs         disable input devices
168   --enable-outdev=NAME     enable output device NAME
169   --disable-outdev=NAME    disable output device NAME
170   --disable-outdevs        disable output devices
171   --disable-devices        disable all devices
172   --enable-filter=NAME     enable filter NAME
173   --disable-filter=NAME    disable filter NAME
174   --disable-filters        disable all filters
175
176 External library support:
177   --enable-avisynth        enable reading of AviSynth script files [no]
178   --enable-bzlib           enable bzlib [autodetect]
179   --enable-frei0r          enable frei0r video filtering
180   --enable-gnutls          enable gnutls [no]
181   --enable-libcdio         enable audio CD grabbing with libcdio
182   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
183                            and libraw1394 [no]
184   --enable-libfaac         enable AAC encoding via libfaac [no]
185   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
186   --enable-libfreetype     enable libfreetype [no]
187   --enable-libgsm          enable GSM de/encoding via libgsm [no]
188   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
189   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
190   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
191   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
192   --enable-libopencv       enable video filtering via libopencv [no]
193   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
194   --enable-libopus         enable Opus decoding via libopus [no]
195   --enable-libpulse        enable Pulseaudio input via libpulse [no]
196   --enable-librtmp         enable RTMP[E] support via librtmp [no]
197   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
198   --enable-libspeex        enable Speex de/encoding via libspeex [no]
199   --enable-libtheora       enable Theora encoding via libtheora [no]
200   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
201   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
202   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
203   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
204   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
205   --enable-libwebp         enable WebP encoding via libwebp [no]
206   --enable-libx264         enable H.264 encoding via x264 [no]
207   --enable-libx265         enable HEVC encoding via x265 [no]
208   --enable-libxavs         enable AVS encoding via xavs [no]
209   --enable-libxvid         enable Xvid encoding via xvidcore,
210                            native MPEG-4/Xvid encoder exists [no]
211   --enable-openssl         enable openssl [no]
212   --enable-x11grab         enable X11 grabbing [no]
213   --enable-zlib            enable zlib [autodetect]
214
215 Advanced options (experts only):
216   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
217   --enable-cross-compile   assume a cross-compiler is used
218   --sysroot=PATH           root of cross-build tree
219   --sysinclude=PATH        location of cross-build system headers
220   --target-os=OS           compiler targets OS [$target_os]
221   --target-exec=CMD        command to run executables on target
222   --target-path=DIR        path to view of build directory on target
223   --target-samples=DIR     path to samples directory on target
224   --toolchain=NAME         set tool defaults according to NAME
225   --nm=NM                  use nm tool
226   --ar=AR                  use archive tool AR [$ar_default]
227   --as=AS                  use assembler AS [$as_default]
228   --cc=CC                  use C compiler CC [$cc_default]
229   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
230   --ld=LD                  use linker LD
231   --host-cc=HOSTCC         use host C compiler HOSTCC
232   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
233   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
234   --host-ld=HOSTLD         use host linker HOSTLD
235   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
236   --host-libs=HLIBS        use libs HLIBS when linking for host
237   --host-os=OS             compiler host OS [$target_os]
238   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
239   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
240   --extra-libs=ELIBS       add ELIBS [$ELIBS]
241   --extra-version=STRING   version string suffix []
242   --optflags=OPTFLAGS      override optimization-related compiler flags
243   --build-suffix=SUFFIX    library name suffix []
244   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
245   --arch=ARCH              select architecture [$arch]
246   --cpu=CPU                select the minimum required CPU (affects
247                            instruction selection, may crash on older CPUs)
248   --enable-pic             build position-independent code
249   --enable-sram            allow use of on-chip SRAM
250   --enable-thumb           compile for Thumb instruction set
251   --disable-symver         disable symbol versioning
252   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
253   --disable-safe-bitstream-reader
254                            disable buffer boundary checking in bitreaders
255                            (faster, but may crash)
256   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
257   --enable-lto             use link-time optimization
258
259 Optimization options (experts only):
260   --disable-asm            disable all assembler optimizations
261   --disable-altivec        disable AltiVec optimizations
262   --disable-amd3dnow       disable 3DNow! optimizations
263   --disable-amd3dnowext    disable 3DNow! extended optimizations
264   --disable-mmx            disable MMX optimizations
265   --disable-mmxext         disable MMXEXT optimizations
266   --disable-sse            disable SSE optimizations
267   --disable-sse2           disable SSE2 optimizations
268   --disable-sse3           disable SSE3 optimizations
269   --disable-ssse3          disable SSSE3 optimizations
270   --disable-sse4           disable SSE4 optimizations
271   --disable-sse42          disable SSE4.2 optimizations
272   --disable-avx            disable AVX optimizations
273   --disable-fma4           disable FMA4 optimizations
274   --disable-avx2           disable AVX2 optimizations
275   --disable-armv5te        disable armv5te optimizations
276   --disable-armv6          disable armv6 optimizations
277   --disable-armv6t2        disable armv6t2 optimizations
278   --disable-vfp            disable VFP optimizations
279   --disable-neon           disable NEON optimizations
280   --disable-vis            disable VIS optimizations
281   --disable-inline-asm     disable use of inline assembler
282   --disable-yasm           disable use of yasm assembler
283
284 Developer options (useful when working on Libav itself):
285   --disable-debug          disable debugging symbols
286   --enable-debug=LEVEL     set the debug level [$debuglevel]
287   --disable-optimizations  disable compiler optimizations
288   --enable-extra-warnings  enable more compiler warnings
289   --samples=PATH           location of test samples for FATE, if not set use
290                            \$LIBAV_SAMPLES at make invocation time.
291   --enable-neon-clobber-test check NEON registers for clobbering (should be
292                            used only for debugging purposes)
293   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
294                            should be used only for debugging purposes)
295   --enable-random          randomly enable/disable components
296   --disable-random
297   --enable-random=LIST     randomly enable/disable specific components or
298   --disable-random=LIST    component groups. LIST is a comma-separated list
299                            of NAME[:PROB] entries where NAME is a component
300                            (group) and PROB the probability associated with
301                            NAME (default 0.5).
302   --random-seed=VALUE      seed value for --enable/disable-random
303
304 NOTE: Object files are built at the place where configure is launched.
305 EOF
306   exit 0
307 }
308
309 quotes='""'
310
311 log(){
312     echo "$@" >> $logfile
313 }
314
315 log_file(){
316     log BEGIN $1
317     pr -n -t $1 >> $logfile
318     log END $1
319 }
320
321 echolog(){
322     log "$@"
323     echo "$@"
324 }
325
326 warn(){
327     log "WARNING: $*"
328     WARNINGS="${WARNINGS}WARNING: $*\n"
329 }
330
331 die(){
332     echolog "$@"
333     cat <<EOF
334
335 If you think configure made a mistake, make sure you are using the latest
336 version from Git.  If the latest version fails, report the problem to the
337 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
338 EOF
339     if disabled logging; then
340         cat <<EOF
341 Rerun configure with logging enabled (do not use --disable-logging), and
342 include the log this produces with your report.
343 EOF
344     else
345         cat <<EOF
346 Include the log file "$logfile" produced by configure as this will help
347 solving the problem.
348 EOF
349     fi
350     exit 1
351 }
352
353 # Avoid locale weirdness, besides we really just want to translate ASCII.
354 toupper(){
355     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
356 }
357
358 tolower(){
359     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
360 }
361
362 c_escape(){
363     echo "$*" | sed 's/["\\]/\\\0/g'
364 }
365
366 sh_quote(){
367     v=$(echo "$1" | sed "s/'/'\\\\''/g")
368     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
369     echo "$v"
370 }
371
372 cleanws(){
373     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
374 }
375
376 filter(){
377     pat=$1
378     shift
379     for v; do
380         eval "case $v in $pat) echo $v ;; esac"
381     done
382 }
383
384 filter_out(){
385     pat=$1
386     shift
387     for v; do
388         eval "case $v in $pat) ;; *) echo $v ;; esac"
389     done
390 }
391
392 map(){
393     m=$1
394     shift
395     for v; do eval $m; done
396 }
397
398 add_suffix(){
399     suffix=$1
400     shift
401     for v; do echo ${v}${suffix}; done
402 }
403
404 set_all(){
405     value=$1
406     shift
407     for var in $*; do
408         eval $var=$value
409     done
410 }
411
412 set_weak(){
413     value=$1
414     shift
415     for var; do
416         eval : \${$var:=$value}
417     done
418 }
419
420 sanitize_var_name(){
421     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
422 }
423
424 set_safe(){
425     var=$1
426     shift
427     eval $(sanitize_var_name "$var")='$*'
428 }
429
430 get_safe(){
431     eval echo \$$(sanitize_var_name "$1")
432 }
433
434 pushvar(){
435     for pvar in $*; do
436         eval level=\${${pvar}_level:=0}
437         eval ${pvar}_${level}="\$$pvar"
438         eval ${pvar}_level=$(($level+1))
439     done
440 }
441
442 popvar(){
443     for pvar in $*; do
444         eval level=\${${pvar}_level:-0}
445         test $level = 0 && continue
446         eval level=$(($level-1))
447         eval $pvar="\${${pvar}_${level}}"
448         eval ${pvar}_level=$level
449         eval unset ${pvar}_${level}
450     done
451 }
452
453 enable(){
454     set_all yes $*
455 }
456
457 disable(){
458     set_all no $*
459 }
460
461 enable_weak(){
462     set_weak yes $*
463 }
464
465 disable_weak(){
466     set_weak no $*
467 }
468
469 enable_safe(){
470     for var; do
471         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
472     done
473 }
474
475 disable_safe(){
476     for var; do
477         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
478     done
479 }
480
481 do_enable_deep(){
482     for var; do
483         enabled $var && continue
484         eval sel="\$${var}_select"
485         eval sgs="\$${var}_suggest"
486         pushvar var sgs
487         enable_deep $sel
488         popvar sgs
489         enable_deep_weak $sgs
490         popvar var
491     done
492 }
493
494 enable_deep(){
495     do_enable_deep $*
496     enable $*
497 }
498
499 enable_deep_weak(){
500     for var; do
501         disabled $var && continue
502         pushvar var
503         do_enable_deep $var
504         popvar var
505         enable_weak $var
506     done
507 }
508
509 enabled(){
510     test "${1#!}" = "$1" && op== || op=!=
511     eval test "x\$${1#!}" $op "xyes"
512 }
513
514 disabled(){
515     test "${1#!}" = "$1" && op== || op=!=
516     eval test "x\$${1#!}" $op "xno"
517 }
518
519 enabled_all(){
520     for opt; do
521         enabled $opt || return 1
522     done
523 }
524
525 disabled_all(){
526     for opt; do
527         disabled $opt || return 1
528     done
529 }
530
531 enabled_any(){
532     for opt; do
533         enabled $opt && return 0
534     done
535 }
536
537 disabled_any(){
538     for opt; do
539         disabled $opt && return 0
540     done
541     return 1
542 }
543
544 set_default(){
545     for opt; do
546         eval : \${$opt:=\$${opt}_default}
547     done
548 }
549
550 is_in(){
551     value=$1
552     shift
553     for var in $*; do
554         [ $var = $value ] && return 0
555     done
556     return 1
557 }
558
559 do_check_deps(){
560     for cfg; do
561         cfg="${cfg#!}"
562         enabled ${cfg}_checking && die "Circular dependency for $cfg."
563         disabled ${cfg}_checking && continue
564         enable ${cfg}_checking
565         append allopts $cfg
566
567         eval dep_all="\$${cfg}_deps"
568         eval dep_any="\$${cfg}_deps_any"
569         eval dep_sel="\$${cfg}_select"
570         eval dep_sgs="\$${cfg}_suggest"
571         eval dep_ifa="\$${cfg}_if"
572         eval dep_ifn="\$${cfg}_if_any"
573
574         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
575         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
576         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
577
578         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
579         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
580         enabled_all  $dep_all || disable $cfg
581         enabled_any  $dep_any || disable $cfg
582         disabled_any $dep_sel && disable $cfg
583
584         if enabled $cfg; then
585             enable_deep $dep_sel
586             enable_deep_weak $dep_sgs
587         fi
588
589         disable ${cfg}_checking
590     done
591 }
592
593 check_deps(){
594     unset allopts
595
596     do_check_deps "$@"
597
598     for cfg in $allopts; do
599         enabled $cfg || continue
600         eval dep_extralibs="\$${cfg}_extralibs"
601         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
602     done
603 }
604
605 print_config(){
606     pfx=$1
607     files=$2
608     shift 2
609     map 'eval echo "$v \${$v:-no}"' "$@" |
610     awk "BEGIN { split(\"$files\", files) }
611         {
612             c = \"$pfx\" toupper(\$1);
613             v = \$2;
614             sub(/yes/, 1, v);
615             sub(/no/,  0, v);
616             for (f in files) {
617                 file = files[f];
618                 if (file ~ /\\.h\$/) {
619                     printf(\"#define %s %d\\n\", c, v) >>file;
620                 } else if (file ~ /\\.asm\$/) {
621                     printf(\"%%define %s %d\\n\", c, v) >>file;
622                 } else if (file ~ /\\.mak\$/) {
623                     n = -v ? \"\" : \"!\";
624                     printf(\"%s%s=yes\\n\", n, c) >>file;
625                 }
626             }
627         }"
628 }
629
630 print_enabled(){
631     suf=$1
632     shift
633     for v; do
634         enabled $v && printf "%s\n" ${v%$suf};
635     done
636 }
637
638 append(){
639     var=$1
640     shift
641     eval "$var=\"\$$var $*\""
642 }
643
644 prepend(){
645     var=$1
646     shift
647     eval "$var=\"$* \$$var\""
648 }
649
650 add_cppflags(){
651     append CPPFLAGS "$@"
652 }
653
654 add_cflags(){
655     append CFLAGS $($cflags_filter "$@")
656 }
657
658 add_asflags(){
659     append ASFLAGS $($asflags_filter "$@")
660 }
661
662 add_ldflags(){
663     append LDFLAGS $($ldflags_filter "$@")
664 }
665
666 add_stripflags(){
667     append STRIPFLAGS "$@"
668 }
669
670 add_extralibs(){
671     prepend extralibs $($ldflags_filter "$@")
672 }
673
674 add_host_cppflags(){
675     append host_cppflags "$@"
676 }
677
678 add_host_cflags(){
679     append host_cflags $($host_cflags_filter "$@")
680 }
681
682 add_host_ldflags(){
683     append host_ldflags $($host_ldflags_filter "$@")
684 }
685
686 add_compat(){
687     append compat_objs $1
688     shift
689     map 'add_cppflags -D$v' "$@"
690 }
691
692 check_cmd(){
693     log "$@"
694     "$@" >> $logfile 2>&1
695 }
696
697 cc_o(){
698     eval printf '%s\\n' $CC_O
699 }
700
701 cc_e(){
702     eval printf '%s\\n' $CC_E
703 }
704
705 check_cc(){
706     log check_cc "$@"
707     cat > $TMPC
708     log_file $TMPC
709     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
710 }
711
712 check_cpp(){
713     log check_cpp "$@"
714     cat > $TMPC
715     log_file $TMPC
716     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
717 }
718
719 as_o(){
720     eval printf '%s\\n' $AS_O
721 }
722
723 check_as(){
724     log check_as "$@"
725     cat > $TMPS
726     log_file $TMPS
727     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
728 }
729
730 check_inline_asm(){
731     log check_inline_asm "$@"
732     name="$1"
733     code="$2"
734     shift 2
735     disable $name
736     check_cc "$@" <<EOF && enable $name
737 void foo(void){ __asm__ volatile($code); }
738 EOF
739 }
740
741 check_insn(){
742     log check_insn "$@"
743     check_inline_asm ${1}_inline "\"$2\""
744     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
745 }
746
747 check_yasm(){
748     log check_yasm "$@"
749     echo "$1" > $TMPS
750     log_file $TMPS
751     shift 1
752     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
753 }
754
755 ld_o(){
756     eval printf '%s\\n' $LD_O
757 }
758
759 check_ld(){
760     log check_ld "$@"
761     flags=$(filter_out '-l*' "$@")
762     libs=$(filter '-l*' "$@")
763     check_cc $($cflags_filter $flags) || return
764     flags=$($ldflags_filter $flags)
765     libs=$($ldflags_filter $libs)
766     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
767 }
768
769 print_include(){
770     hdr=$1
771     test "${hdr%.h}" = "${hdr}" &&
772         echo "#include $hdr"    ||
773         echo "#include <$hdr>"
774 }
775
776 check_code(){
777     log check_code "$@"
778     check=$1
779     headers=$2
780     code=$3
781     shift 3
782     {
783         for hdr in $headers; do
784             print_include $hdr
785         done
786         echo "int main(void) { $code; return 0; }"
787     } | check_$check "$@"
788 }
789
790 check_cppflags(){
791     log check_cppflags "$@"
792     check_cc "$@" <<EOF && append CPPFLAGS "$@"
793 int x;
794 EOF
795 }
796
797 test_cflags(){
798     log test_cflags "$@"
799     set -- $($cflags_filter "$@")
800     check_cc "$@" <<EOF
801 int x;
802 EOF
803 }
804
805 check_cflags(){
806     log check_cflags "$@"
807     test_cflags "$@" && add_cflags "$@"
808 }
809
810 test_ldflags(){
811     log test_ldflags "$@"
812     check_ld "$@" <<EOF
813 int main(void){ return 0; }
814 EOF
815 }
816
817 check_ldflags(){
818     log check_ldflags "$@"
819     test_ldflags "$@" && add_ldflags "$@"
820 }
821
822 test_stripflags(){
823     log test_stripflags "$@"
824     # call check_cc to get a fresh TMPO
825     check_cc <<EOF
826 int main(void) { return 0; }
827 EOF
828     check_cmd $strip $STRIPFLAGS "$@" $TMPO
829 }
830
831 check_stripflags(){
832     log check_stripflags "$@"
833     test_stripflags "$@" && add_stripflags "$@"
834 }
835
836 check_header(){
837     log check_header "$@"
838     header=$1
839     shift
840     disable_safe $header
841     check_cpp "$@" <<EOF && enable_safe $header
842 #include <$header>
843 int x;
844 EOF
845 }
846
847 check_func(){
848     log check_func "$@"
849     func=$1
850     shift
851     disable $func
852     check_ld "$@" <<EOF && enable $func
853 extern int $func();
854 int main(void){ $func(); }
855 EOF
856 }
857
858 check_mathfunc(){
859     log check_mathfunc "$@"
860     func=$1
861     narg=$2
862     shift 2
863     test $narg = 2 && args="f, g" || args="f"
864     disable $func
865     check_ld "$@" <<EOF && enable $func
866 #include <math.h>
867 float foo(float f, float g) { return $func($args); }
868 int main(void){ return 0; }
869 EOF
870 }
871
872 check_func_headers(){
873     log check_func_headers "$@"
874     headers=$1
875     funcs=$2
876     shift 2
877     {
878         for hdr in $headers; do
879             print_include $hdr
880         done
881         for func in $funcs; do
882             echo "long check_$func(void) { return (long) $func; }"
883         done
884         echo "int main(void) { return 0; }"
885     } | check_ld "$@" && enable $funcs && enable_safe $headers
886 }
887
888 check_cpp_condition(){
889     log check_cpp_condition "$@"
890     header=$1
891     condition=$2
892     shift 2
893     check_cpp "$@" <<EOF
894 #include <$header>
895 #if !($condition)
896 #error "unsatisfied condition: $condition"
897 #endif
898 EOF
899 }
900
901 check_lib(){
902     log check_lib "$@"
903     header="$1"
904     func="$2"
905     shift 2
906     check_header $header && check_func $func "$@" && add_extralibs "$@"
907 }
908
909 check_lib2(){
910     log check_lib2 "$@"
911     headers="$1"
912     funcs="$2"
913     shift 2
914     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
915 }
916
917 check_pkg_config(){
918     log check_pkg_config "$@"
919     pkg="$1"
920     headers="$2"
921     funcs="$3"
922     shift 3
923     check_cmd $pkg_config --exists --print-errors $pkg || return
924     pkg_cflags=$($pkg_config --cflags $pkg)
925     pkg_libs=$($pkg_config --libs $pkg)
926     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
927         set_safe ${pkg}_cflags $pkg_cflags   &&
928         set_safe ${pkg}_libs   $pkg_libs
929 }
930
931 check_exec(){
932     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
933 }
934
935 check_exec_crash(){
936     code=$(cat)
937
938     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
939     # are safe but may not be available everywhere.  Thus we use
940     # raise(SIGTERM) instead.  The check is run in a subshell so we
941     # can redirect the "Terminated" message from the shell.  SIGBUS
942     # is not defined by standard C so it is used conditionally.
943
944     (check_exec "$@") >> $logfile 2>&1 <<EOF
945 #include <signal.h>
946 static void sighandler(int sig){
947     raise(SIGTERM);
948 }
949 int foo(void){
950     $code
951 }
952 int (*func_ptr)(void) = foo;
953 int main(void){
954     signal(SIGILL, sighandler);
955     signal(SIGFPE, sighandler);
956     signal(SIGSEGV, sighandler);
957 #ifdef SIGBUS
958     signal(SIGBUS, sighandler);
959 #endif
960     return func_ptr();
961 }
962 EOF
963 }
964
965 check_type(){
966     log check_type "$@"
967     headers=$1
968     type=$2
969     shift 2
970     disable_safe "$type"
971     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
972 }
973
974 check_struct(){
975     log check_struct "$@"
976     headers=$1
977     struct=$2
978     member=$3
979     shift 3
980     disable_safe "${struct}_${member}"
981     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
982         enable_safe "${struct}_${member}"
983 }
984
985 check_builtin(){
986     log check_builtin "$@"
987     name=$1
988     headers=$2
989     builtin=$3
990     shift 3
991     disable "$name"
992     check_code ld "$headers" "$builtin" "$@" && enable "$name"
993 }
994
995 require(){
996     name="$1"
997     header="$2"
998     func="$3"
999     shift 3
1000     check_lib $header $func "$@" || die "ERROR: $name not found"
1001 }
1002
1003 require2(){
1004     name="$1"
1005     headers="$2"
1006     func="$3"
1007     shift 3
1008     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1009 }
1010
1011 require_pkg_config(){
1012     pkg="$1"
1013     check_pkg_config "$@" || die "ERROR: $pkg not found"
1014     add_cflags    $(get_safe ${pkg}_cflags)
1015     add_extralibs $(get_safe ${pkg}_libs)
1016 }
1017
1018 hostcc_e(){
1019     eval printf '%s\\n' $HOSTCC_E
1020 }
1021
1022 hostcc_o(){
1023     eval printf '%s\\n' $HOSTCC_O
1024 }
1025
1026 check_host_cc(){
1027     log check_host_cc "$@"
1028     cat > $TMPC
1029     log_file $TMPC
1030     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1031 }
1032
1033 check_host_cpp(){
1034     log check_host_cpp "$@"
1035     cat > $TMPC
1036     log_file $TMPC
1037     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1038 }
1039
1040 check_host_cppflags(){
1041     log check_host_cppflags "$@"
1042     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1043 int x;
1044 EOF
1045 }
1046
1047 check_host_cflags(){
1048     log check_host_cflags "$@"
1049     set -- $($host_cflags_filter "$@")
1050     check_host_cc "$@" <<EOF && append host_cflags "$@"
1051 int x;
1052 EOF
1053 }
1054
1055 check_host_cpp_condition(){
1056     log check_host_cpp_condition "$@"
1057     header=$1
1058     condition=$2
1059     shift 2
1060     check_host_cpp "$@" <<EOF
1061 #include <$header>
1062 #if !($condition)
1063 #error "unsatisfied condition: $condition"
1064 #endif
1065 EOF
1066 }
1067
1068 apply(){
1069     file=$1
1070     shift
1071     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1072 }
1073
1074 cp_if_changed(){
1075     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1076     mkdir -p "$(dirname $2)"
1077     $cp_f "$1" "$2"
1078 }
1079
1080 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1081 # system-dependent things.
1082
1083 COMPONENT_LIST="
1084     bsfs
1085     decoders
1086     demuxers
1087     encoders
1088     filters
1089     hwaccels
1090     indevs
1091     muxers
1092     outdevs
1093     parsers
1094     protocols
1095 "
1096
1097 EXAMPLE_LIST="
1098     output_example
1099     transcode_aac_example
1100 "
1101
1102 EXTERNAL_LIBRARY_LIST="
1103     avisynth
1104     bzlib
1105     frei0r
1106     gnutls
1107     libcdio
1108     libdc1394
1109     libfaac
1110     libfdk_aac
1111     libfreetype
1112     libgsm
1113     libilbc
1114     libmp3lame
1115     libopencore_amrnb
1116     libopencore_amrwb
1117     libopencv
1118     libopenjpeg
1119     libopus
1120     libpulse
1121     librtmp
1122     libschroedinger
1123     libspeex
1124     libtheora
1125     libvo_aacenc
1126     libvo_amrwbenc
1127     libvorbis
1128     libvpx
1129     libwavpack
1130     libwebp
1131     libx264
1132     libx265
1133     libxavs
1134     libxvid
1135     openssl
1136     x11grab
1137     zlib
1138 "
1139
1140 HWACCEL_LIST="
1141     dxva2
1142     vaapi
1143     vda
1144     vdpau
1145 "
1146 LIBRARY_LIST="
1147     avcodec
1148     avdevice
1149     avfilter
1150     avformat
1151     avresample
1152     avutil
1153     swscale
1154 "
1155
1156 PROGRAM_LIST="
1157     avconv
1158     avplay
1159     avprobe
1160     avserver
1161 "
1162
1163 CONFIG_LIST="
1164     $COMPONENT_LIST
1165     $EXAMPLE_LIST
1166     $EXTERNAL_LIBRARY_LIST
1167     $HWACCEL_LIST
1168     $LIBRARY_LIST
1169     $PROGRAM_LIST
1170     dct
1171     doc
1172     error_resilience
1173     fft
1174     gpl
1175     gray
1176     hardcoded_tables
1177     lsp
1178     lzo
1179     mdct
1180     memalign_hack
1181     neon_clobber_test
1182     network
1183     nonfree
1184     pod2man
1185     pic
1186     rdft
1187     runtime_cpudetect
1188     safe_bitstream_reader
1189     shared
1190     small
1191     sram
1192     static
1193     swscale_alpha
1194     texi2html
1195     thumb
1196     version3
1197     xmm_clobber_test
1198 "
1199
1200 THREADS_LIST='
1201     pthreads
1202     w32threads
1203 '
1204
1205 ATOMICS_LIST='
1206     atomics_gcc
1207     atomics_suncc
1208     atomics_win32
1209 '
1210
1211 ARCH_LIST='
1212     aarch64
1213     alpha
1214     arm
1215     avr32
1216     avr32_ap
1217     avr32_uc
1218     bfin
1219     ia64
1220     m68k
1221     mips
1222     mips64
1223     parisc
1224     ppc
1225     ppc64
1226     s390
1227     sh4
1228     sparc
1229     sparc64
1230     tilegx
1231     tilepro
1232     tomi
1233     x86
1234     x86_32
1235     x86_64
1236 '
1237
1238 ARCH_EXT_LIST_ARM='
1239     armv5te
1240     armv6
1241     armv6t2
1242     neon
1243     vfp
1244     vfpv3
1245 '
1246
1247 ARCH_EXT_LIST_X86='
1248     amd3dnow
1249     amd3dnowext
1250     avx
1251     avx2
1252     fma4
1253     i686
1254     mmx
1255     mmxext
1256     sse
1257     sse2
1258     sse3
1259     sse4
1260     sse42
1261     ssse3
1262 '
1263
1264 ARCH_EXT_LIST="
1265     $ARCH_EXT_LIST_ARM
1266     $ARCH_EXT_LIST_X86
1267     altivec
1268     ppc4xx
1269     vis
1270 "
1271
1272 HAVE_LIST_CMDLINE='
1273     inline_asm
1274     symver
1275     yasm
1276 '
1277
1278 HAVE_LIST_PUB='
1279     bigendian
1280     fast_unaligned
1281 '
1282
1283 MATH_FUNCS="
1284     atanf
1285     atan2f
1286     cbrtf
1287     cosf
1288     exp2
1289     exp2f
1290     expf
1291     isinf
1292     isnan
1293     ldexpf
1294     llrint
1295     llrintf
1296     log2
1297     log2f
1298     log10f
1299     lrint
1300     lrintf
1301     powf
1302     rint
1303     round
1304     roundf
1305     sinf
1306     trunc
1307     truncf
1308 "
1309
1310 HAVE_LIST="
1311     $ARCH_EXT_LIST
1312     $(add_suffix _external $ARCH_EXT_LIST)
1313     $(add_suffix _inline   $ARCH_EXT_LIST)
1314     $HAVE_LIST_CMDLINE
1315     $HAVE_LIST_PUB
1316     $THREADS_LIST
1317     $ATOMICS_LIST
1318     $MATH_FUNCS
1319     aligned_malloc
1320     aligned_stack
1321     alsa_asoundlib_h
1322     altivec_h
1323     arpa_inet_h
1324     asm_mod_q
1325     asm_mod_y
1326     atomic_cas_ptr
1327     atomics_native
1328     attribute_may_alias
1329     attribute_packed
1330     cdio_paranoia_h
1331     cdio_paranoia_paranoia_h
1332     closesocket
1333     CommandLineToArgvW
1334     cpunop
1335     CryptGenRandom
1336     dcbzl
1337     dev_bktr_ioctl_bt848_h
1338     dev_bktr_ioctl_meteor_h
1339     dev_ic_bt8xx_h
1340     dev_video_bktr_ioctl_bt848_h
1341     dev_video_meteor_ioctl_meteor_h
1342     direct_h
1343     dlfcn_h
1344     dlopen
1345     dos_paths
1346     dxva_h
1347     ebp_available
1348     ebx_available
1349     fast_64bit
1350     fast_clz
1351     fast_cmov
1352     fcntl
1353     fork
1354     getaddrinfo
1355     gethrtime
1356     getopt
1357     GetProcessAffinityMask
1358     GetProcessMemoryInfo
1359     GetProcessTimes
1360     GetSystemTimeAsFileTime
1361     getrusage
1362     getservbyport
1363     gettimeofday
1364     gnu_as
1365     gsm_h
1366     ibm_asm
1367     inet_aton
1368     io_h
1369     inline_asm_labels
1370     isatty
1371     jack_port_get_latency_range
1372     ldbrx
1373     libc_msvcrt
1374     libdc1394_1
1375     libdc1394_2
1376     local_aligned_16
1377     local_aligned_8
1378     localtime_r
1379     loongson
1380     machine_ioctl_bt848_h
1381     machine_ioctl_meteor_h
1382     machine_rw_barrier
1383     malloc_h
1384     MapViewOfFile
1385     memalign
1386     MemoryBarrier
1387     mkstemp
1388     mm_empty
1389     mmap
1390     mprotect
1391     nanosleep
1392     poll_h
1393     posix_memalign
1394     pragma_deprecated
1395     rdtsc
1396     sched_getaffinity
1397     sdl
1398     SetConsoleTextAttribute
1399     setmode
1400     setrlimit
1401     Sleep
1402     sndio_h
1403     socklen_t
1404     soundcard_h
1405     strerror_r
1406     strptime
1407     strtok_r
1408     struct_addrinfo
1409     struct_group_source_req
1410     struct_ip_mreq_source
1411     struct_ipv6_mreq
1412     struct_pollfd
1413     struct_rusage_ru_maxrss
1414     struct_sockaddr_in6
1415     struct_sockaddr_sa_len
1416     struct_sockaddr_storage
1417     struct_v4l2_frmivalenum_discrete
1418     symver_asm_label
1419     symver_gnu_asm
1420     sync_val_compare_and_swap
1421     sysconf
1422     sysctl
1423     sys_mman_h
1424     sys_param_h
1425     sys_resource_h
1426     sys_select_h
1427     sys_soundcard_h
1428     sys_time_h
1429     sys_un_h
1430     sys_videoio_h
1431     threads
1432     unistd_h
1433     usleep
1434     vdpau_x11
1435     vfp_args
1436     VirtualAlloc
1437     windows_h
1438     winsock2_h
1439     xform_asm
1440     xlib
1441     xmm_clobbers
1442 "
1443
1444 # options emitted with CONFIG_ prefix but not available on the command line
1445 CONFIG_EXTRA="
1446     aandcttables
1447     ac3dsp
1448     audio_frame_queue
1449     dsputil
1450     gcrypt
1451     golomb
1452     gplv3
1453     h263dsp
1454     h264chroma
1455     h264dsp
1456     h264pred
1457     h264qpel
1458     hpeldsp
1459     huffman
1460     intrax8
1461     lgplv3
1462     lpc
1463     mpegaudio
1464     mpegaudiodsp
1465     mpegvideo
1466     mpegvideoenc
1467     nettle
1468     rangecoder
1469     riffdec
1470     riffenc
1471     rtpdec
1472     rtpenc_chain
1473     sinewin
1474     videodsp
1475     vp3dsp
1476 "
1477
1478 CMDLINE_SELECT="
1479     $ARCH_EXT_LIST
1480     $CONFIG_LIST
1481     $HAVE_LIST_CMDLINE
1482     $THREADS_LIST
1483     asm
1484     cross_compile
1485     debug
1486     extra_warnings
1487     logging
1488     lto
1489     optimizations
1490 "
1491
1492 PATHS_LIST='
1493     bindir
1494     datadir
1495     docdir
1496     incdir
1497     libdir
1498     mandir
1499     prefix
1500     shlibdir
1501 '
1502
1503 CMDLINE_SET="
1504     $PATHS_LIST
1505     ar
1506     arch
1507     as
1508     build_suffix
1509     cc
1510     cpu
1511     cross_prefix
1512     dep_cc
1513     extra_version
1514     host_cc
1515     host_cflags
1516     host_ld
1517     host_ldflags
1518     host_libs
1519     host_os
1520     ld
1521     logfile
1522     malloc_prefix
1523     nm
1524     optflags
1525     pkg_config
1526     random_seed
1527     samples
1528     sysinclude
1529     sysroot
1530     target_exec
1531     target_os
1532     target_path
1533     target_samples
1534     toolchain
1535 "
1536
1537 CMDLINE_APPEND="
1538     extra_cflags
1539     host_cppflags
1540 "
1541
1542 # code dependency declarations
1543
1544 # architecture extensions
1545
1546 armv5te_deps="arm"
1547 armv6_deps="arm"
1548 armv6t2_deps="arm"
1549 neon_deps_any="aarch64 arm"
1550 vfp_deps_any="aarch64 arm"
1551 vfpv3_deps="vfp"
1552
1553 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1554
1555 altivec_deps="ppc"
1556 ppc4xx_deps="ppc"
1557
1558 vis_deps="sparc"
1559
1560 cpunop_deps="i686"
1561 x86_64_select="i686"
1562 x86_64_suggest="fast_cmov"
1563
1564 amd3dnow_deps="mmx"
1565 amd3dnowext_deps="amd3dnow"
1566 i686_deps="x86"
1567 mmx_deps="x86"
1568 mmxext_deps="mmx"
1569 sse_deps="mmxext"
1570 sse2_deps="sse"
1571 sse3_deps="sse2"
1572 ssse3_deps="sse3"
1573 sse4_deps="ssse3"
1574 sse42_deps="sse4"
1575 avx_deps="sse42"
1576 fma4_deps="avx"
1577 avx2_deps="avx"
1578
1579 mmx_external_deps="yasm"
1580 mmx_inline_deps="inline_asm"
1581 mmx_suggest="mmx_external mmx_inline"
1582
1583 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1584     eval dep=\$${ext}_deps
1585     eval ${ext}_external_deps='"${dep}_external"'
1586     eval ${ext}_inline_deps='"${dep}_inline"'
1587     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1588 done
1589
1590 aligned_stack_if_any="aarch64 ppc x86"
1591 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1592 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1593 fast_unaligned_if_any="aarch64 ppc x86"
1594
1595 need_memalign="altivec neon sse"
1596
1597 # system capabilities
1598 log2_deps="!libc_msvcrt"
1599
1600 symver_if_any="symver_asm_label symver_gnu_asm"
1601
1602 # threading support
1603 atomics_gcc_if="sync_val_compare_and_swap"
1604 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1605 atomics_win32_if="MemoryBarrier"
1606 atomics_native_if_any="$ATOMICS_LIST"
1607 threads_if_any="$THREADS_LIST"
1608
1609 # subsystems
1610 dct_select="rdft"
1611 error_resilience_select="dsputil"
1612 lpc_select="dsputil"
1613 mdct_select="fft"
1614 rdft_select="fft"
1615 mpegaudio_select="mpegaudiodsp"
1616 mpegaudiodsp_select="dct"
1617 mpegvideo_select="dsputil hpeldsp videodsp"
1618 mpegvideoenc_select="mpegvideo"
1619
1620 # decoders / encoders
1621 aac_decoder_select="mdct sinewin"
1622 aac_encoder_select="audio_frame_queue mdct sinewin"
1623 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1624 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1625 ac3_encoder_select="mdct ac3dsp dsputil"
1626 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1627 aic_decoder_select="dsputil golomb"
1628 alac_encoder_select="lpc"
1629 als_decoder_select="dsputil"
1630 amrnb_decoder_select="lsp"
1631 amrwb_decoder_select="lsp"
1632 amv_decoder_select="dsputil hpeldsp"
1633 ape_decoder_select="dsputil"
1634 asv1_decoder_select="dsputil"
1635 asv1_encoder_select="dsputil"
1636 asv2_decoder_select="dsputil"
1637 asv2_encoder_select="dsputil"
1638 atrac1_decoder_select="mdct sinewin"
1639 atrac3_decoder_select="mdct"
1640 atrac3p_decoder_select="mdct sinewin"
1641 bink_decoder_select="dsputil hpeldsp"
1642 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1643 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1644 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1645 cllc_decoder_select="dsputil"
1646 comfortnoise_encoder_select="lpc"
1647 cook_decoder_select="dsputil mdct sinewin"
1648 cscd_decoder_select="lzo"
1649 cscd_decoder_suggest="zlib"
1650 dca_decoder_select="mdct"
1651 dnxhd_decoder_select="dsputil"
1652 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1653 dvvideo_decoder_select="dsputil"
1654 dvvideo_encoder_select="dsputil"
1655 dxa_decoder_deps="zlib"
1656 eac3_decoder_select="ac3_decoder"
1657 eac3_encoder_select="ac3_encoder"
1658 eamad_decoder_select="aandcttables dsputil mpegvideo"
1659 eatgq_decoder_select="aandcttables dsputil"
1660 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1661 ffv1_decoder_select="dsputil golomb rangecoder"
1662 ffv1_encoder_select="dsputil rangecoder"
1663 ffvhuff_decoder_select="dsputil"
1664 ffvhuff_encoder_select="dsputil huffman"
1665 fic_decoder_select="dsputil golomb"
1666 flac_decoder_select="golomb"
1667 flac_encoder_select="dsputil golomb lpc"
1668 flashsv_decoder_deps="zlib"
1669 flashsv_encoder_deps="zlib"
1670 flashsv2_decoder_deps="zlib"
1671 flv_decoder_select="h263_decoder"
1672 flv_encoder_select="h263_encoder"
1673 fourxm_decoder_select="dsputil"
1674 fraps_decoder_select="dsputil huffman"
1675 g2m_decoder_deps="zlib"
1676 g2m_decoder_select="dsputil"
1677 h261_decoder_select="error_resilience mpegvideo"
1678 h261_encoder_select="aandcttables mpegvideoenc"
1679 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1680 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1681 h263i_decoder_select="h263_decoder"
1682 h263p_encoder_select="h263_encoder"
1683 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1684 h264_decoder_suggest="error_resilience"
1685 hevc_decoder_select="dsputil golomb videodsp"
1686 huffyuv_decoder_select="dsputil"
1687 huffyuv_encoder_select="dsputil huffman"
1688 iac_decoder_select="dsputil fft mdct sinewin"
1689 imc_decoder_select="dsputil fft mdct sinewin"
1690 indeo3_decoder_select="hpeldsp"
1691 interplay_video_decoder_select="hpeldsp"
1692 jpegls_decoder_select="dsputil golomb hpeldsp"
1693 jpegls_encoder_select="golomb"
1694 jv_decoder_select="dsputil"
1695 lagarith_decoder_select="dsputil"
1696 ljpeg_encoder_select="aandcttables mpegvideoenc"
1697 loco_decoder_select="golomb"
1698 mdec_decoder_select="dsputil error_resilience mpegvideo"
1699 metasound_decoder_select="lsp mdct sinewin"
1700 mimic_decoder_select="dsputil hpeldsp"
1701 mjpeg_decoder_select="dsputil hpeldsp"
1702 mjpegb_decoder_select="dsputil hpeldsp"
1703 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1704 mlp_decoder_select="dsputil mlp_parser"
1705 motionpixels_decoder_select="dsputil"
1706 mp1_decoder_select="mpegaudio"
1707 mp1float_decoder_select="mpegaudio"
1708 mp2_decoder_select="mpegaudio"
1709 mp2float_decoder_select="mpegaudio"
1710 mp3_decoder_select="mpegaudio"
1711 mp3adu_decoder_select="mpegaudio"
1712 mp3adufloat_decoder_select="mpegaudio"
1713 mp3float_decoder_select="mpegaudio"
1714 mp3on4_decoder_select="mpegaudio"
1715 mp3on4float_decoder_select="mpegaudio"
1716 mpc7_decoder_select="dsputil mpegaudiodsp"
1717 mpc8_decoder_select="dsputil mpegaudiodsp"
1718 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1719 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1720 mpeg1video_decoder_select="error_resilience mpegvideo"
1721 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1722 mpeg2video_decoder_select="error_resilience mpegvideo"
1723 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1724 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1725 mpeg4_encoder_select="h263_encoder"
1726 msmpeg4v1_decoder_select="h263_decoder"
1727 msmpeg4v2_decoder_select="h263_decoder"
1728 msmpeg4v2_encoder_select="h263_encoder"
1729 msmpeg4v3_decoder_select="h263_decoder"
1730 msmpeg4v3_encoder_select="h263_encoder"
1731 mss2_decoder_select="error_resilience vc1_decoder"
1732 mxpeg_decoder_select="dsputil hpeldsp"
1733 nellymoser_decoder_select="mdct sinewin"
1734 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1735 nuv_decoder_select="dsputil lzo"
1736 png_decoder_deps="zlib"
1737 png_decoder_select="dsputil"
1738 png_encoder_deps="zlib"
1739 png_encoder_select="dsputil"
1740 prores_decoder_select="dsputil"
1741 prores_encoder_select="dsputil"
1742 qcelp_decoder_select="lsp"
1743 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1744 ra_144_encoder_select="audio_frame_queue lpc"
1745 ralf_decoder_select="golomb"
1746 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1747 rv10_encoder_select="h263_encoder"
1748 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1749 rv20_encoder_select="h263_encoder"
1750 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1751 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1752 shorten_decoder_select="golomb"
1753 sipr_decoder_select="lsp"
1754 sp5x_decoder_select="dsputil hpeldsp"
1755 svq1_decoder_select="hpeldsp"
1756 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1757 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1758 svq3_decoder_suggest="error_resilience zlib"
1759 tak_decoder_select="dsputil"
1760 theora_decoder_select="vp3_decoder"
1761 tiff_decoder_suggest="zlib"
1762 tiff_encoder_suggest="zlib"
1763 thp_decoder_select="dsputil hpeldsp"
1764 truehd_decoder_select="mlp_decoder"
1765 truemotion2_decoder_select="dsputil"
1766 truespeech_decoder_select="dsputil"
1767 tscc_decoder_deps="zlib"
1768 twinvq_decoder_select="mdct lsp sinewin"
1769 utvideo_decoder_select="dsputil"
1770 utvideo_encoder_select="dsputil huffman"
1771 vble_decoder_select="dsputil"
1772 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1773 vc1image_decoder_select="vc1_decoder"
1774 vorbis_decoder_select="mdct"
1775 vorbis_encoder_select="mdct"
1776 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1777 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1778 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1779 vp6a_decoder_select="vp6_decoder"
1780 vp6f_decoder_select="vp6_decoder"
1781 vp8_decoder_select="h264pred videodsp"
1782 vp9_decoder_select="videodsp"
1783 webp_decoder_select="vp8_decoder"
1784 wmapro_decoder_select="mdct sinewin"
1785 wmav1_decoder_select="mdct sinewin"
1786 wmav1_encoder_select="mdct sinewin"
1787 wmav2_decoder_select="mdct sinewin"
1788 wmav2_encoder_select="mdct sinewin"
1789 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1790 wmv1_decoder_select="h263_decoder"
1791 wmv1_encoder_select="h263_encoder"
1792 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1793 wmv2_encoder_select="h263_encoder"
1794 wmv3_decoder_select="vc1_decoder"
1795 wmv3image_decoder_select="wmv3_decoder"
1796 zerocodec_decoder_deps="zlib"
1797 zlib_decoder_deps="zlib"
1798 zlib_encoder_deps="zlib"
1799 zmbv_decoder_deps="zlib"
1800 zmbv_encoder_deps="zlib"
1801
1802 # hardware accelerators
1803 dxva2_deps="dxva2api_h"
1804 vaapi_deps="va_va_h"
1805 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1806 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1807 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1808
1809 h263_vaapi_hwaccel_deps="vaapi"
1810 h263_vaapi_hwaccel_select="h263_decoder"
1811 h263_vdpau_hwaccel_deps="vdpau"
1812 h263_vdpau_hwaccel_select="h263_decoder"
1813 h264_dxva2_hwaccel_deps="dxva2"
1814 h264_dxva2_hwaccel_select="h264_decoder"
1815 h264_vaapi_hwaccel_deps="vaapi"
1816 h264_vaapi_hwaccel_select="h264_decoder"
1817 h264_vda_hwaccel_deps="vda"
1818 h264_vda_hwaccel_select="h264_decoder"
1819 h264_vdpau_hwaccel_deps="vdpau"
1820 h264_vdpau_hwaccel_select="h264_decoder"
1821 mpeg1_vdpau_hwaccel_deps="vdpau"
1822 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1823 mpeg2_dxva2_hwaccel_deps="dxva2"
1824 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1825 mpeg2_vaapi_hwaccel_deps="vaapi"
1826 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1827 mpeg2_vdpau_hwaccel_deps="vdpau"
1828 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1829 mpeg4_vaapi_hwaccel_deps="vaapi"
1830 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1831 mpeg4_vdpau_hwaccel_deps="vdpau"
1832 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1833 vc1_dxva2_hwaccel_deps="dxva2"
1834 vc1_dxva2_hwaccel_select="vc1_decoder"
1835 vc1_vaapi_hwaccel_deps="vaapi"
1836 vc1_vaapi_hwaccel_select="vc1_decoder"
1837 vc1_vdpau_hwaccel_deps="vdpau"
1838 vc1_vdpau_hwaccel_select="vc1_decoder"
1839 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1840 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1841 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1842
1843 # parsers
1844 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1845 mpeg4video_parser_select="error_resilience mpegvideo"
1846 mpegvideo_parser_select="error_resilience mpegvideo"
1847 vc1_parser_select="mpegvideo"
1848
1849 # external libraries
1850 libfaac_encoder_deps="libfaac"
1851 libfaac_encoder_select="audio_frame_queue"
1852 libfdk_aac_decoder_deps="libfdk_aac"
1853 libfdk_aac_encoder_deps="libfdk_aac"
1854 libfdk_aac_encoder_select="audio_frame_queue"
1855 libgsm_decoder_deps="libgsm"
1856 libgsm_encoder_deps="libgsm"
1857 libgsm_ms_decoder_deps="libgsm"
1858 libgsm_ms_encoder_deps="libgsm"
1859 libilbc_decoder_deps="libilbc"
1860 libilbc_encoder_deps="libilbc"
1861 libmp3lame_encoder_deps="libmp3lame"
1862 libmp3lame_encoder_select="audio_frame_queue"
1863 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1864 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1865 libopencore_amrnb_encoder_select="audio_frame_queue"
1866 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1867 libopenjpeg_decoder_deps="libopenjpeg"
1868 libopenjpeg_encoder_deps="libopenjpeg"
1869 libopus_decoder_deps="libopus"
1870 libopus_encoder_deps="libopus"
1871 libopus_encoder_select="audio_frame_queue"
1872 libschroedinger_decoder_deps="libschroedinger"
1873 libschroedinger_encoder_deps="libschroedinger"
1874 libspeex_decoder_deps="libspeex"
1875 libspeex_encoder_deps="libspeex"
1876 libspeex_encoder_select="audio_frame_queue"
1877 libtheora_encoder_deps="libtheora"
1878 libvo_aacenc_encoder_deps="libvo_aacenc"
1879 libvo_aacenc_encoder_select="audio_frame_queue"
1880 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1881 libvorbis_encoder_deps="libvorbis"
1882 libvorbis_encoder_select="audio_frame_queue"
1883 libvpx_vp8_decoder_deps="libvpx"
1884 libvpx_vp8_encoder_deps="libvpx"
1885 libvpx_vp9_decoder_deps="libvpx"
1886 libvpx_vp9_encoder_deps="libvpx"
1887 libwavpack_encoder_deps="libwavpack"
1888 libwebp_encoder_deps="libwebp"
1889 libx264_encoder_deps="libx264"
1890 libx265_encoder_deps="libx265"
1891 libxavs_encoder_deps="libxavs"
1892 libxvid_encoder_deps="libxvid"
1893
1894 # demuxers / muxers
1895 ac3_demuxer_select="ac3_parser"
1896 asf_demuxer_select="riffdec"
1897 asf_muxer_select="riffenc"
1898 asf_stream_muxer_select="asf_muxer"
1899 avi_demuxer_select="riffdec"
1900 avi_muxer_select="riffenc"
1901 avisynth_demuxer_deps="avisynth"
1902 avisynth_demuxer_select="riffdec"
1903 caf_demuxer_select="riffdec"
1904 dirac_demuxer_select="dirac_parser"
1905 dxa_demuxer_select="riffdec"
1906 eac3_demuxer_select="ac3_parser"
1907 f4v_muxer_select="mov_muxer"
1908 flac_demuxer_select="flac_parser"
1909 hds_muxer_select="flv_muxer"
1910 hls_muxer_select="mpegts_muxer"
1911 ipod_muxer_select="mov_muxer"
1912 ismv_muxer_select="mov_muxer"
1913 matroska_audio_muxer_select="matroska_muxer"
1914 matroska_demuxer_select="riffdec"
1915 matroska_demuxer_suggest="bzlib lzo zlib"
1916 matroska_muxer_select="riffenc"
1917 mmf_muxer_select="riffenc"
1918 mov_demuxer_select="riffdec"
1919 mov_demuxer_suggest="zlib"
1920 mov_muxer_select="riffenc rtpenc_chain"
1921 mp3_demuxer_select="mpegaudio_parser"
1922 mp4_muxer_select="mov_muxer"
1923 mpegts_muxer_select="adts_muxer latm_muxer"
1924 mpegtsraw_demuxer_select="mpegts_demuxer"
1925 mxf_d10_muxer_select="mxf_muxer"
1926 nut_muxer_select="riffenc"
1927 nuv_demuxer_select="riffdec"
1928 ogg_demuxer_select="golomb"
1929 psp_muxer_select="mov_muxer"
1930 rtp_demuxer_select="sdp_demuxer"
1931 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1932 rtsp_demuxer_select="http_protocol rtpdec"
1933 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1934 sap_demuxer_select="sdp_demuxer"
1935 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1936 sdp_demuxer_select="rtpdec"
1937 smoothstreaming_muxer_select="ismv_muxer"
1938 spdif_muxer_select="aac_parser"
1939 tak_demuxer_select="tak_parser"
1940 tg2_muxer_select="mov_muxer"
1941 tgp_muxer_select="mov_muxer"
1942 w64_demuxer_select="wav_demuxer"
1943 wav_demuxer_select="riffdec"
1944 wav_muxer_select="riffenc"
1945 webm_muxer_select="riffenc"
1946 wtv_demuxer_select="riffdec"
1947 xmv_demuxer_select="riffdec"
1948 xwma_demuxer_select="riffdec"
1949
1950 # indevs / outdevs
1951 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1952 alsa_outdev_deps="alsa_asoundlib_h"
1953 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1954 dv1394_indev_deps="dv1394"
1955 dv1394_indev_select="dv_demuxer"
1956 fbdev_indev_deps="linux_fb_h"
1957 jack_indev_deps="jack_jack_h pthreads"
1958 libcdio_indev_deps="libcdio"
1959 libdc1394_indev_deps="libdc1394"
1960 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1961 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1962 pulse_indev_deps="libpulse"
1963 sndio_indev_deps="sndio_h"
1964 sndio_outdev_deps="sndio_h"
1965 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1966 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1967 vfwcap_indev_extralibs="-lavicap32"
1968 x11grab_indev_deps="x11grab XShmCreateImage"
1969
1970 # protocols
1971 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1972 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1973 ffrtmpcrypt_protocol_select="tcp_protocol"
1974 ffrtmphttp_protocol_deps="!librtmp_protocol"
1975 ffrtmphttp_protocol_select="http_protocol"
1976 gopher_protocol_select="network"
1977 httpproxy_protocol_select="tcp_protocol"
1978 http_protocol_select="tcp_protocol"
1979 https_protocol_select="tls_protocol"
1980 librtmp_protocol_deps="librtmp"
1981 librtmpe_protocol_deps="librtmp"
1982 librtmps_protocol_deps="librtmp"
1983 librtmpt_protocol_deps="librtmp"
1984 librtmpte_protocol_deps="librtmp"
1985 mmsh_protocol_select="http_protocol"
1986 mmst_protocol_select="network"
1987 rtmp_protocol_deps="!librtmp_protocol"
1988 rtmp_protocol_select="tcp_protocol"
1989 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1990 rtmps_protocol_deps="!librtmp_protocol"
1991 rtmps_protocol_select="tls_protocol"
1992 rtmpt_protocol_select="ffrtmphttp_protocol"
1993 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1994 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1995 rtp_protocol_select="udp_protocol"
1996 sctp_protocol_deps="struct_sctp_event_subscribe"
1997 sctp_protocol_select="network"
1998 srtp_protocol_select="rtp_protocol"
1999 tcp_protocol_select="network"
2000 tls_protocol_deps_any="openssl gnutls"
2001 tls_protocol_select="tcp_protocol"
2002 udp_protocol_select="network"
2003 unix_protocol_deps="sys_un_h"
2004 unix_protocol_select="network"
2005
2006 # filters
2007 blackframe_filter_deps="gpl"
2008 boxblur_filter_deps="gpl"
2009 cropdetect_filter_deps="gpl"
2010 delogo_filter_deps="gpl"
2011 drawtext_filter_deps="libfreetype"
2012 frei0r_filter_deps="frei0r dlopen strtok_r"
2013 frei0r_filter_extralibs='$ldl'
2014 frei0r_src_filter_deps="frei0r dlopen strtok_r"
2015 frei0r_src_filter_extralibs='$ldl'
2016 hqdn3d_filter_deps="gpl"
2017 interlace_filter_deps="gpl"
2018 resample_filter_deps="avresample"
2019 ocv_filter_deps="libopencv"
2020 scale_filter_deps="swscale"
2021
2022 # examples
2023 output_example_deps="avcodec avformat avutil swscale"
2024 transcode_aac_example_deps="avcodec avformat avresample"
2025
2026 # libraries
2027 avcodec_deps="avutil"
2028 avdevice_deps="avutil avcodec avformat"
2029 avfilter_deps="avutil"
2030 avformat_deps="avutil avcodec"
2031 avresample_deps="avutil"
2032 swscale_deps="avutil"
2033
2034 # programs
2035 avconv_deps="avcodec avfilter avformat avresample swscale"
2036 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2037                fps_filter null_filter resample_filter scale_filter
2038                setpts_filter trim_filter"
2039 avplay_deps="avcodec avformat avresample swscale sdl"
2040 avplay_libs='$sdl_libs'
2041 avplay_select="rdft"
2042 avprobe_deps="avcodec avformat"
2043 avserver_deps="avformat fork !shared"
2044 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2045
2046 # documentation
2047 pod2man_deps="doc"
2048 texi2html_deps="doc"
2049
2050 # default parameters
2051
2052 logfile="config.log"
2053
2054 # installation paths
2055 prefix_default="/usr/local"
2056 bindir_default='${prefix}/bin'
2057 datadir_default='${prefix}/share/avconv'
2058 docdir_default='${prefix}/share/doc/libav'
2059 incdir_default='${prefix}/include'
2060 libdir_default='${prefix}/lib'
2061 mandir_default='${prefix}/share/man'
2062 shlibdir_default="$libdir_default"
2063
2064 # toolchain
2065 ar_default="ar"
2066 cc_default="gcc"
2067 host_cc_default="gcc"
2068 cp_f="cp -f"
2069 ln_s="ln -s -f"
2070 nm_default="nm -g"
2071 objformat="elf"
2072 pkg_config_default=pkg-config
2073 ranlib="ranlib"
2074 strip="strip"
2075 yasmexe="yasm"
2076
2077 nogas=":"
2078
2079 # machine
2080 arch_default=$(uname -m)
2081 cpu="generic"
2082
2083 # OS
2084 target_os_default=$(tolower $(uname -s))
2085 host_os=$target_os_default
2086
2087 # configurable options
2088 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2089
2090 enable asm
2091 enable debug
2092 enable doc
2093 enable optimizations
2094 enable safe_bitstream_reader
2095 enable static
2096 enable swscale_alpha
2097
2098 # By default, enable only those hwaccels that have no external dependencies.
2099 enable dxva2 vdpau
2100
2101 # build settings
2102 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2103 LIBPREF="lib"
2104 LIBSUF=".a"
2105 FULLNAME='$(NAME)$(BUILDSUF)'
2106 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2107 SLIBPREF="lib"
2108 SLIBSUF=".so"
2109 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2110 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2111 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2112 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2113 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2114 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2115
2116 asflags_filter=echo
2117 cflags_filter=echo
2118 ldflags_filter=echo
2119
2120 AS_C='-c'
2121 AS_O='-o $@'
2122 CC_C='-c'
2123 CC_E='-E -o $@'
2124 CC_O='-o $@'
2125 LD_O='-o $@'
2126 LD_LIB='-l%'
2127 LD_PATH='-L'
2128 HOSTCC_C='-c'
2129 HOSTCC_E='-E -o $@'
2130 HOSTCC_O='-o $@'
2131 HOSTLD_O='-o $@'
2132
2133 host_libs='-lm'
2134 host_cflags_filter=echo
2135 host_ldflags_filter=echo
2136
2137 target_path='$(CURDIR)'
2138
2139 # since the object filename is not given with the -MM flag, the compiler
2140 # is only able to print the basename, and we must add the path ourselves
2141 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2142 DEPFLAGS='-MM'
2143
2144 # find source path
2145 if test -f configure; then
2146     source_path=.
2147 else
2148     source_path=$(cd $(dirname "$0"); pwd)
2149     echo "$source_path" | grep -q '[[:blank:]]' &&
2150         die "Out of tree builds are impossible with whitespace in source path."
2151     test -e "$source_path/config.h" &&
2152         die "Out of tree builds are impossible with config.h in source dir."
2153 fi
2154
2155 for v in "$@"; do
2156     r=${v#*=}
2157     l=${v%"$r"}
2158     r=$(sh_quote "$r")
2159     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2160 done
2161
2162 find_things(){
2163     thing=$1
2164     pattern=$2
2165     file=$source_path/$3
2166     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2167 }
2168
2169 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2170 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2171 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2172 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2173 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2174 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2175 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2176 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2177 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2178 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2179 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2180
2181 ALL_COMPONENTS="
2182     $BSF_LIST
2183     $DECODER_LIST
2184     $DEMUXER_LIST
2185     $ENCODER_LIST
2186     $FILTER_LIST
2187     $HWACCEL_LIST
2188     $INDEV_LIST
2189     $MUXER_LIST
2190     $OUTDEV_LIST
2191     $PARSER_LIST
2192     $PROTOCOL_LIST
2193 "
2194
2195 for n in $COMPONENT_LIST; do
2196     v=$(toupper ${n%s})_LIST
2197     eval enable \$$v
2198     eval ${n}_if_any="\$$v"
2199 done
2200
2201 enable $ARCH_EXT_LIST
2202
2203 die_unknown(){
2204     echo "Unknown option \"$1\"."
2205     echo "See $0 --help for available options."
2206     exit 1
2207 }
2208
2209 print_3_columns() {
2210     cat | tr ' ' '\n' | sort | pr -r -3 -t
2211 }
2212
2213 show_list() {
2214     suffix=_$1
2215     shift
2216     echo $* | sed s/$suffix//g | print_3_columns
2217     exit 0
2218 }
2219
2220 rand_list(){
2221     IFS=', '
2222     set -- $*
2223     unset IFS
2224     for thing; do
2225         comp=${thing%:*}
2226         prob=${thing#$comp}
2227         prob=${prob#:}
2228         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2229         echo "prob ${prob:-0.5}"
2230         printf '%s\n' $comp
2231     done
2232 }
2233
2234 do_random(){
2235     action=$1
2236     shift
2237     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2238     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2239 }
2240
2241 for opt do
2242     optval="${opt#*=}"
2243     case "$opt" in
2244         --extra-ldflags=*)
2245             add_ldflags $optval
2246         ;;
2247         --extra-libs=*)
2248             add_extralibs $optval
2249         ;;
2250         --disable-devices)
2251             disable $INDEV_LIST $OUTDEV_LIST
2252         ;;
2253         --enable-debug=*)
2254             debuglevel="$optval"
2255         ;;
2256         --disable-programs)
2257             disable $PROGRAM_LIST
2258         ;;
2259         --disable-everything)
2260             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2261         ;;
2262         --disable-all)
2263             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2264             disable $LIBRARY_LIST $PROGRAM_LIST doc
2265         ;;
2266         --enable-random|--disable-random)
2267             action=${opt%%-random}
2268             do_random ${action#--} $COMPONENT_LIST
2269         ;;
2270         --enable-random=*|--disable-random=*)
2271             action=${opt%%-random=*}
2272             do_random ${action#--} $optval
2273         ;;
2274         --enable-*=*|--disable-*=*)
2275             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2276             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2277             eval list=\$$(toupper $thing)_LIST
2278             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2279             $action $(filter "$name" $list)
2280         ;;
2281         --enable-?*|--disable-?*)
2282             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2283             if is_in $option $COMPONENT_LIST; then
2284                 test $action = disable && action=unset
2285                 eval $action \$$(toupper ${option%s})_LIST
2286             elif is_in $option $CMDLINE_SELECT; then
2287                 $action $option
2288             else
2289                 die_unknown $opt
2290             fi
2291         ;;
2292         --list-*)
2293             NAME="${opt#--list-}"
2294             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2295             NAME=${NAME%s}
2296             eval show_list $NAME \$$(toupper $NAME)_LIST
2297         ;;
2298         --help|-h) show_help
2299         ;;
2300         *)
2301             optname="${opt%%=*}"
2302             optname="${optname#--}"
2303             optname=$(echo "$optname" | sed 's/-/_/g')
2304             if is_in $optname $CMDLINE_SET; then
2305                 eval $optname='$optval'
2306             elif is_in $optname $CMDLINE_APPEND; then
2307                 append $optname "$optval"
2308             else
2309                 die_unknown $opt
2310             fi
2311         ;;
2312     esac
2313 done
2314
2315 disabled logging && logfile=/dev/null
2316
2317 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2318 set >> $logfile
2319
2320 test -n "$cross_prefix" && enable cross_compile
2321
2322 if enabled cross_compile; then
2323     test -n "$arch" && test -n "$target_os" ||
2324         die "Must specify target arch and OS when cross-compiling"
2325 fi
2326
2327 ar_default="${cross_prefix}${ar_default}"
2328 cc_default="${cross_prefix}${cc_default}"
2329 nm_default="${cross_prefix}${nm_default}"
2330 pkg_config_default="${cross_prefix}${pkg_config_default}"
2331 ranlib="${cross_prefix}${ranlib}"
2332 strip="${cross_prefix}${strip}"
2333
2334 sysinclude_default="${sysroot}/usr/include"
2335
2336 case "$toolchain" in
2337     clang-asan)
2338         cc_default="clang"
2339         add_cflags  -fsanitize=address
2340         add_ldflags -fsanitize=address
2341     ;;
2342     clang-tsan)
2343         cc_default="clang"
2344         add_cflags  -fsanitize=thread -pie
2345         add_ldflags -fsanitize=thread -pie
2346     ;;
2347     gcc-asan)
2348         cc_default="gcc"
2349         add_cflags  -fsanitize=address
2350         add_ldflags -fsanitize=address
2351     ;;
2352     gcc-tsan)
2353         cc_default="gcc"
2354         add_cflags  -fsanitize=thread -pie -fPIC
2355         add_ldflags -fsanitize=thread -pie -fPIC
2356     ;;
2357     valgrind-massif)
2358         target_exec_default="valgrind"
2359         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2360     ;;
2361     valgrind-memcheck)
2362         target_exec_default="valgrind"
2363         target_exec_args="--track-origins=yes --leak-check=full"
2364     ;;
2365     msvc)
2366         # Check whether the current MSVC version needs the C99 converter.
2367         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2368         # support enough of C99 to build libav. Default to the new
2369         # behaviour if the regexp was unable to match anything, since this
2370         # successfully parses the version number of existing supported
2371         # versions that require the converter (MSVC 2010 and 2012).
2372         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2373         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2374             cc_default="cl"
2375         else
2376             cc_default="c99wrap cl"
2377         fi
2378         ld_default="link"
2379         nm_default="dumpbin -symbols"
2380         ar_default="lib"
2381         target_os_default="win32"
2382         # Use a relative path for TMPDIR. This makes sure all the
2383         # ffconf temp files are written with a relative path, avoiding
2384         # issues with msys/win32 path conversion for MSVC parameters
2385         # such as -Fo<file> or -out:<file>.
2386         TMPDIR=.
2387     ;;
2388     icl)
2389         cc_default="icl"
2390         ld_default="xilink"
2391         nm_default="dumpbin -symbols"
2392         ar_default="xilib"
2393         target_os_default="win32"
2394         TMPDIR=.
2395     ;;
2396     gcov)
2397         add_cflags  -fprofile-arcs -ftest-coverage
2398         add_ldflags -fprofile-arcs -ftest-coverage
2399     ;;
2400     hardened)
2401         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2402         add_ldflags -Wl,-z,relro -Wl,-z,now
2403     ;;
2404     ?*)
2405         die "Unknown toolchain $toolchain"
2406     ;;
2407 esac
2408
2409 set_default arch cc pkg_config sysinclude target_exec target_os
2410 enabled cross_compile || host_cc_default=$cc
2411 set_default host_cc
2412
2413 if ! $pkg_config --version >/dev/null 2>&1; then
2414     warn "$pkg_config not found, library detection may fail."
2415     pkg_config=false
2416 fi
2417
2418 exesuf() {
2419     case $1 in
2420         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2421     esac
2422 }
2423
2424 EXESUF=$(exesuf $target_os)
2425 HOSTEXESUF=$(exesuf $host_os)
2426
2427 # set temporary file name
2428 : ${TMPDIR:=$TEMPDIR}
2429 : ${TMPDIR:=$TMP}
2430 : ${TMPDIR:=/tmp}
2431
2432 if ! check_cmd mktemp -u XXXXXX; then
2433     # simple replacement for missing mktemp
2434     # NOT SAFE FOR GENERAL USE
2435     mktemp(){
2436         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2437     }
2438 fi
2439
2440 tmpfile(){
2441     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2442         (set -C; exec > $tmp) 2>/dev/null ||
2443         die "Unable to create temporary file in $TMPDIR."
2444     append TMPFILES $tmp
2445     eval $1=$tmp
2446 }
2447
2448 trap 'rm -f -- $TMPFILES' EXIT
2449
2450 tmpfile TMPASM .asm
2451 tmpfile TMPC   .c
2452 tmpfile TMPE   $EXESUF
2453 tmpfile TMPH   .h
2454 tmpfile TMPO   .o
2455 tmpfile TMPS   .S
2456 tmpfile TMPSH  .sh
2457 tmpfile TMPV   .ver
2458
2459 unset -f mktemp
2460
2461 chmod +x $TMPE
2462
2463 # make sure we can execute files in $TMPDIR
2464 cat > $TMPSH 2>> $logfile <<EOF
2465 #! /bin/sh
2466 EOF
2467 chmod +x $TMPSH >> $logfile 2>&1
2468 if ! $TMPSH >> $logfile 2>&1; then
2469     cat <<EOF
2470 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2471 variable to another directory and make sure that it is not mounted noexec.
2472 EOF
2473     die "Sanity test failed."
2474 fi
2475
2476 ccc_flags(){
2477     for flag; do
2478         case $flag in
2479             -std=c99)           echo -c99                       ;;
2480             -mcpu=*)            echo -arch ${flag#*=}           ;;
2481             -mieee)             echo -ieee                      ;;
2482             -O*|-fast)          echo $flag                      ;;
2483             -fno-math-errno)    echo -assume nomath_errno       ;;
2484             -g)                 echo -g3                        ;;
2485             -Wall)              echo -msg_enable level2         ;;
2486             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2487             -Wl,*)              echo $flag                      ;;
2488             -f*|-W*)                                            ;;
2489             *)                  echo $flag                      ;;
2490         esac
2491    done
2492 }
2493
2494 cparser_flags(){
2495     for flag; do
2496         case $flag in
2497             -Wno-switch)             echo -Wno-switch-enum ;;
2498             -Wno-format-zero-length) ;;
2499             -Wdisabled-optimization) ;;
2500             -Wno-pointer-sign)       echo -Wno-other ;;
2501             *)                       echo $flag ;;
2502         esac
2503     done
2504 }
2505
2506 msvc_common_flags(){
2507     for flag; do
2508         case $flag in
2509             # In addition to specifying certain flags under the compiler
2510             # specific filters, they must be specified here as well or else the
2511             # generic catch all at the bottom will print the original flag.
2512             -Wall)                ;;
2513             -std=c99)             ;;
2514             # Common flags
2515             -fomit-frame-pointer) ;;
2516             -g)                   echo -Z7 ;;
2517             -fno-math-errno)      ;;
2518             -fno-common)          ;;
2519             -fno-signed-zeros)    ;;
2520             -fPIC)                ;;
2521             -mthumb)              ;;
2522             -march=*)             ;;
2523             -lz)                  echo zlib.lib ;;
2524             -lavifil32)           echo vfw32.lib ;;
2525             -lavicap32)           echo vfw32.lib user32.lib ;;
2526             -l*)                  echo ${flag#-l}.lib ;;
2527             *)                    echo $flag ;;
2528         esac
2529     done
2530 }
2531
2532 msvc_flags(){
2533     msvc_common_flags "$@"
2534     for flag; do
2535         case $flag in
2536             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2537                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2538                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2539                                        -wd4273 ;;
2540         esac
2541     done
2542 }
2543
2544 icl_flags(){
2545     msvc_common_flags "$@"
2546     for flag; do
2547         case $flag in
2548             # Despite what Intel's documentation says -Wall, which is supported
2549             # on Windows, does enable remarks so disable them here.
2550             -Wall)                echo $flag -Qdiag-disable:remark ;;
2551             -std=c99)             echo -Qstd=c99 ;;
2552         esac
2553     done
2554 }
2555
2556 pgi_flags(){
2557     for flag; do
2558         case $flag in
2559             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2560             -fomit-frame-pointer) echo -Mnoframe ;;
2561             -g)                   echo -gopt ;;
2562             *)                    echo $flag ;;
2563         esac
2564     done
2565 }
2566
2567 suncc_flags(){
2568     for flag; do
2569         case $flag in
2570             -march=*|-mcpu=*)
2571                 case "${flag#*=}" in
2572                     native)                   echo -xtarget=native       ;;
2573                     v9|niagara)               echo -xarch=sparc          ;;
2574                     ultrasparc)               echo -xarch=sparcvis       ;;
2575                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2576                     i586|pentium)             echo -xchip=pentium        ;;
2577                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2578                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2579                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2580                     pentium4*)          echo -xtarget=pentium4           ;;
2581                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2582                     *-sse3)             echo -xarch=sse3                 ;;
2583                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2584                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2585                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2586                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2587                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2588                     k8|opteron|athlon64|athlon-fx)
2589                                                echo -xarch=sse2a         ;;
2590                     athlon*)                   echo -xarch=pentium_proa  ;;
2591                 esac
2592                 ;;
2593             -std=c99)             echo -xc99              ;;
2594             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2595             -fPIC)                echo -KPIC -xcode=pic32 ;;
2596             -W*,*)                echo $flag              ;;
2597             -f*-*|-W*|-mimpure-text)                      ;;
2598             -shared)              echo -G                 ;;
2599             *)                    echo $flag              ;;
2600         esac
2601     done
2602 }
2603
2604 tms470_flags(){
2605     for flag; do
2606         case $flag in
2607             -march=*|-mcpu=*)
2608                 case "${flag#*=}" in
2609                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2610                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2611                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2612                     armv6*|arm11*)          echo -mv=6   ;;
2613                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2614                                             echo -mv=5e  ;;
2615                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2616                 esac
2617                 ;;
2618             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2619             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2620             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2621             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2622             -msoft-float)   echo --float_support=vfplib       ;;
2623             -O[0-3]|-mf=*)  echo $flag                        ;;
2624             -g)             echo -g -mn                       ;;
2625             -pds=*)         echo $flag                        ;;
2626             -D*|-I*)        echo $flag                        ;;
2627             --gcc|--abi=*)  echo $flag                        ;;
2628             -me)            echo $flag                        ;;
2629         esac
2630     done
2631 }
2632
2633 probe_cc(){
2634     pfx=$1
2635     _cc=$2
2636
2637     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2638     unset _ld_o _ldflags _ld_lib _ld_path
2639     unset _depflags _DEPCMD _DEPFLAGS
2640     _flags_filter=echo
2641
2642     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2643         _type=llvm_gcc
2644         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2645         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2646         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2647         _cflags_speed='-O3'
2648         _cflags_size='-Os'
2649     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2650         _type=gcc
2651         gcc_version=$($_cc --version | head -n1)
2652         gcc_basever=$($_cc -dumpversion)
2653         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2654         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2655         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2656         if ! $_cc -dumpversion | grep -q '^2\.'; then
2657             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2658         fi
2659         _cflags_speed='-O3'
2660         _cflags_size='-Os'
2661     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2662         _type=icc
2663         _ident=$($_cc --version | head -n1)
2664         _depflags='-MMD'
2665         _cflags_speed='-O3'
2666         _cflags_size='-Os'
2667         _cflags_noopt='-O1'
2668     elif $_cc -v 2>&1 | grep -q xlc; then
2669         _type=xlc
2670         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2671         _cflags_speed='-O5'
2672         _cflags_size='-O5 -qcompact'
2673     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2674         _type=ccc
2675         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2676         _DEPFLAGS='-M'
2677         _cflags_speed='-fast'
2678         _cflags_size='-O1'
2679         _flags_filter=ccc_flags
2680     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2681         test -d "$sysroot" || die "No valid sysroot specified."
2682         _type=armcc
2683         _ident=$($_cc --vsn | head -n1)
2684         armcc_conf="$PWD/armcc.conf"
2685         $_cc --arm_linux_configure                 \
2686              --arm_linux_config_file="$armcc_conf" \
2687              --configure_sysroot="$sysroot"        \
2688              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2689              die "Error creating armcc configuration file."
2690         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2691         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2692         as_default="${cross_prefix}gcc"
2693         _depflags='-MMD'
2694         _cflags_speed='-O3'
2695         _cflags_size='-Os'
2696     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2697         _type=tms470
2698         _ident=$($_cc -version | head -n1 | tr -s ' ')
2699         _flags='--gcc --abi=eabi -me'
2700         _cc_e='-ppl -fe=$@'
2701         _cc_o='-fe=$@'
2702         _depflags='-ppa -ppd=$(@:.o=.d)'
2703         _cflags_speed='-O3 -mf=5'
2704         _cflags_size='-O3 -mf=2'
2705         _flags_filter=tms470_flags
2706     elif $_cc -v 2>&1 | grep -q clang; then
2707         _type=clang
2708         _ident=$($_cc --version | head -n1)
2709         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2710         _cflags_speed='-O3'
2711         _cflags_size='-Os'
2712     elif $_cc -V 2>&1 | grep -q Sun; then
2713         _type=suncc
2714         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2715         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2716         _DEPFLAGS='-xM1 -xc99'
2717         _ldflags='-std=c99'
2718         _cflags_speed='-O5'
2719         _cflags_size='-O5 -xspace'
2720         _flags_filter=suncc_flags
2721     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2722         _type=pathscale
2723         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2724         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2725         _cflags_speed='-O2'
2726         _cflags_size='-Os'
2727         _flags_filter='filter_out -Wdisabled-optimization'
2728     elif $_cc -v 2>&1 | grep -q Open64; then
2729         _type=open64
2730         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2731         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2732         _cflags_speed='-O2'
2733         _cflags_size='-Os'
2734         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2735     elif $_cc -V 2>&1 | grep -q Portland; then
2736         _type=pgi
2737         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2738         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2739         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2740         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2741         _cflags_noopt="-O1"
2742         _flags_filter=pgi_flags
2743     elif $_cc 2>&1 | grep -q Microsoft; then
2744         _type=msvc
2745         _ident=$($cc 2>&1 | head -n1)
2746         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2747         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2748         _cflags_speed="-O2"
2749         _cflags_size="-O1"
2750         if $_cc 2>&1 | grep -q Linker; then
2751             _ld_o='-out:$@'
2752         else
2753             _ld_o='-Fe$@'
2754         fi
2755         _cc_o='-Fo$@'
2756         _cc_e='-P -Fi$@'
2757         _flags_filter=msvc_flags
2758         _ld_lib='lib%.a'
2759         _ld_path='-libpath:'
2760         _flags='-nologo'
2761         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2762         if [ $pfx = hostcc ]; then
2763             append _cflags -Dsnprintf=_snprintf
2764         fi
2765     elif $_cc 2>&1 | grep -q Intel; then
2766         _type=icl
2767         _ident=$($cc 2>&1 | head -n1)
2768         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2769         # Not only is O3 broken on 13.x+ but it is slower on all previous
2770         # versions (tested) as well.
2771         _cflags_speed="-O2"
2772         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2773         if $_cc 2>&1 | grep -q Linker; then
2774             _ld_o='-out:$@'
2775         else
2776             _ld_o='-Fe$@'
2777         fi
2778         _cc_o='-Fo$@'
2779         _cc_e='-P'
2780         _flags_filter=icl_flags
2781         _ld_lib='lib%.a'
2782         _ld_path='-libpath:'
2783         # -Qdiag-error to make icl error when seeing certain unknown arguments
2784         _flags='-nologo -Qdiag-error:4044,10157'
2785         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2786         # with MSVC which enables it by default.
2787         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2788         if [ $pfx = hostcc ]; then
2789             append _cflags -Dsnprintf=_snprintf
2790         fi
2791     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2792         _type=cparser
2793         _ident=$($_cc --version | head -n1)
2794         _depflags='-MMD'
2795         _cflags_speed='-O4'
2796         _cflags_size='-O2'
2797         _flags_filter=cparser_flags
2798     fi
2799
2800     eval ${pfx}_type=\$_type
2801     eval ${pfx}_ident=\$_ident
2802 }
2803
2804 set_ccvars(){
2805     eval ${1}_C=\${_cc_c-\${${1}_C}}
2806     eval ${1}_E=\${_cc_e-\${${1}_E}}
2807     eval ${1}_O=\${_cc_o-\${${1}_O}}
2808
2809     if [ -n "$_depflags" ]; then
2810         eval ${1}_DEPFLAGS=\$_depflags
2811     else
2812         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2813         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2814         eval DEP${1}FLAGS=\$_flags
2815     fi
2816 }
2817
2818 probe_cc cc "$cc"
2819 cflags_filter=$_flags_filter
2820 cflags_speed=$_cflags_speed
2821 cflags_size=$_cflags_size
2822 cflags_noopt=$_cflags_noopt
2823 add_cflags $_flags $_cflags
2824 cc_ldflags=$_ldflags
2825 set_ccvars CC
2826
2827 probe_cc hostcc "$host_cc"
2828 host_cflags_filter=$_flags_filter
2829 add_host_cflags  $_flags $_cflags
2830 set_ccvars HOSTCC
2831
2832 test -n "$cc_type" && enable $cc_type ||
2833     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2834
2835 : ${as_default:=$cc}
2836 : ${dep_cc_default:=$cc}
2837 : ${ld_default:=$cc}
2838 : ${host_ld_default:=$host_cc}
2839 set_default ar as dep_cc ld host_ld
2840
2841 probe_cc as "$as"
2842 asflags_filter=$_flags_filter
2843 add_asflags $_flags $_cflags
2844 set_ccvars AS
2845
2846 probe_cc ld "$ld"
2847 ldflags_filter=$_flags_filter
2848 add_ldflags $_flags $_ldflags
2849 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2850 LD_O=${_ld_o-$LD_O}
2851 LD_LIB=${_ld_lib-$LD_LIB}
2852 LD_PATH=${_ld_path-$LD_PATH}
2853
2854 probe_cc hostld "$host_ld"
2855 host_ldflags_filter=$_flags_filter
2856 add_host_ldflags $_flags $_ldflags
2857 HOSTLD_O=${_ld_o-$HOSTLD_O}
2858
2859 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2860     probe_cc depcc "$dep_cc"
2861     CCDEP=${_DEPCMD:-$DEPCMD}
2862     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2863     DEPCCFLAGS=$_flags
2864 fi
2865
2866 if $ar 2>&1 | grep -q Microsoft; then
2867     arflags="-nologo"
2868     ar_o='-out:$@'
2869 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2870     arflags="rq"
2871     ar_o='$@'
2872 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2873     arflags='-Xany -r -c'
2874     ar_o='$@'
2875 else
2876     arflags="rc"
2877     ar_o='$@'
2878 fi
2879
2880 add_cflags $extra_cflags
2881 add_asflags $extra_cflags
2882
2883 if test -n "$sysroot"; then
2884     case "$cc_type" in
2885         gcc|llvm_gcc|clang)
2886             add_cppflags --sysroot="$sysroot"
2887             add_ldflags --sysroot="$sysroot"
2888         ;;
2889         tms470)
2890             add_cppflags -I"$sysinclude"
2891             add_ldflags  --sysroot="$sysroot"
2892         ;;
2893     esac
2894 fi
2895
2896 if test "$cpu" = host; then
2897     enabled cross_compile &&
2898         die "--cpu=host makes no sense when cross-compiling."
2899
2900     case "$cc_type" in
2901         gcc|llvm_gcc)
2902             check_native(){
2903                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2904                 sed -n "/cc1.*$1=/{
2905                             s/.*$1=\\([^ ]*\\).*/\\1/
2906                             p
2907                             q
2908                         }" $TMPE
2909             }
2910             cpu=$(check_native -march || check_native -mcpu)
2911         ;;
2912     esac
2913
2914     test "${cpu:-host}" = host &&
2915         die "--cpu=host not supported with compiler $cc"
2916 fi
2917
2918 # Deal with common $arch aliases
2919 case "$arch" in
2920     aarch64|arm64)
2921         arch="aarch64"
2922     ;;
2923     arm*)
2924         arch="arm"
2925     ;;
2926     mips*|IP*)
2927         arch="mips"
2928     ;;
2929     parisc*|hppa*)
2930         arch="parisc"
2931     ;;
2932     "Power Macintosh"|ppc*|powerpc*)
2933         arch="ppc"
2934     ;;
2935     s390|s390x)
2936         arch="s390"
2937     ;;
2938     sh4|sh)
2939         arch="sh4"
2940     ;;
2941     sun4u|sparc*)
2942         arch="sparc"
2943     ;;
2944     tilegx|tile-gx)
2945         arch="tilegx"
2946     ;;
2947     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2948         arch="x86"
2949     ;;
2950 esac
2951
2952 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2953 enable $arch
2954
2955 # Add processor-specific flags
2956 if enabled aarch64; then
2957
2958     case $cpu in
2959         armv*)
2960             cpuflags="-march=$cpu"
2961         ;;
2962         *)
2963             cpuflags="-mcpu=$cpu"
2964         ;;
2965     esac
2966
2967 elif enabled alpha; then
2968
2969     cpuflags="-mcpu=$cpu"
2970
2971 elif enabled arm; then
2972
2973     check_arm_arch() {
2974         check_cpp_condition stddef.h \
2975             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2976             $cpuflags
2977     }
2978
2979     probe_arm_arch() {
2980         if   check_arm_arch 4;        then echo armv4;
2981         elif check_arm_arch 4T;       then echo armv4t;
2982         elif check_arm_arch 5;        then echo armv5;
2983         elif check_arm_arch 5E;       then echo armv5e;
2984         elif check_arm_arch 5T;       then echo armv5t;
2985         elif check_arm_arch 5TE;      then echo armv5te;
2986         elif check_arm_arch 5TEJ;     then echo armv5te;
2987         elif check_arm_arch 6;        then echo armv6;
2988         elif check_arm_arch 6J;       then echo armv6j;
2989         elif check_arm_arch 6K;       then echo armv6k;
2990         elif check_arm_arch 6Z;       then echo armv6z;
2991         elif check_arm_arch 6ZK;      then echo armv6zk;
2992         elif check_arm_arch 6T2;      then echo armv6t2;
2993         elif check_arm_arch 7;        then echo armv7;
2994         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2995         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2996         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2997         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2998         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2999         fi
3000     }
3001
3002     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3003
3004     case $cpu in
3005         armv*)
3006             cpuflags="-march=$cpu"
3007             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3008         ;;
3009         *)
3010             cpuflags="-mcpu=$cpu"
3011             case $cpu in
3012                 cortex-a*)                               subarch=armv7a  ;;
3013                 cortex-r*)                               subarch=armv7r  ;;
3014                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3015                 arm11*)                                  subarch=armv6   ;;
3016                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3017                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3018                 *)                             subarch=$(probe_arm_arch) ;;
3019             esac
3020         ;;
3021     esac
3022
3023     case "$subarch" in
3024         armv5t*)    enable fast_clz                ;;
3025         armv[6-8]*) enable fast_clz fast_unaligned ;;
3026     esac
3027
3028 elif enabled avr32; then
3029
3030     case $cpu in
3031         ap7[02]0[0-2])
3032             subarch="avr32_ap"
3033             cpuflags="-mpart=$cpu"
3034         ;;
3035         ap)
3036             subarch="avr32_ap"
3037             cpuflags="-march=$cpu"
3038         ;;
3039         uc3[ab]*)
3040             subarch="avr32_uc"
3041             cpuflags="-mcpu=$cpu"
3042         ;;
3043         uc)
3044             subarch="avr32_uc"
3045             cpuflags="-march=$cpu"
3046         ;;
3047     esac
3048
3049 elif enabled bfin; then
3050
3051     cpuflags="-mcpu=$cpu"
3052
3053 elif enabled mips; then
3054
3055     cpuflags="-march=$cpu"
3056
3057 elif enabled ppc; then
3058
3059     case $(tolower $cpu) in
3060         601|ppc601|powerpc601)
3061             cpuflags="-mcpu=601"
3062             disable altivec
3063         ;;
3064         603*|ppc603*|powerpc603*)
3065             cpuflags="-mcpu=603"
3066             disable altivec
3067         ;;
3068         604*|ppc604*|powerpc604*)
3069             cpuflags="-mcpu=604"
3070             disable altivec
3071         ;;
3072         g3|75*|ppc75*|powerpc75*)
3073             cpuflags="-mcpu=750"
3074             disable altivec
3075         ;;
3076         g4|745*|ppc745*|powerpc745*)
3077             cpuflags="-mcpu=7450"
3078         ;;
3079         74*|ppc74*|powerpc74*)
3080             cpuflags="-mcpu=7400"
3081         ;;
3082         g5|970|ppc970|powerpc970)
3083             cpuflags="-mcpu=970"
3084         ;;
3085         power[3-7]*)
3086             cpuflags="-mcpu=$cpu"
3087         ;;
3088         cell)
3089             cpuflags="-mcpu=cell"
3090             enable ldbrx
3091         ;;
3092         e500mc)
3093             cpuflags="-mcpu=e500mc"
3094             disable altivec
3095         ;;
3096         e500v2)
3097             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3098             disable altivec
3099         ;;
3100         e500)
3101             cpuflags="-mcpu=8540 -mhard-float"
3102             disable altivec
3103         ;;
3104     esac
3105
3106 elif enabled sparc; then
3107
3108     case $cpu in
3109         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3110             cpuflags="-mcpu=$cpu"
3111             disable vis
3112         ;;
3113         ultrasparc*|niagara[234])
3114             cpuflags="-mcpu=$cpu"
3115         ;;
3116     esac
3117
3118 elif enabled x86; then
3119
3120     case $cpu in
3121         i[345]86|pentium)
3122             cpuflags="-march=$cpu"
3123             disable mmx
3124         ;;
3125         # targets that do NOT support nopl and conditional mov (cmov)
3126         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3127             cpuflags="-march=$cpu"
3128             disable i686
3129         ;;
3130         # targets that do support nopl and conditional mov (cmov)
3131         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3132             cpuflags="-march=$cpu"
3133             enable i686
3134             enable fast_cmov
3135         ;;
3136         # targets that do support conditional mov but on which it's slow
3137         pentium4|pentium4m|prescott|nocona)
3138             cpuflags="-march=$cpu"
3139             enable i686
3140             disable fast_cmov
3141         ;;
3142     esac
3143
3144 fi
3145
3146 if [ "$cpu" != generic ]; then
3147     add_cflags  $cpuflags
3148     add_asflags $cpuflags
3149 fi
3150
3151 # compiler sanity check
3152 check_exec <<EOF
3153 int main(void){ return 0; }
3154 EOF
3155 if test "$?" != 0; then
3156     echo "$cc is unable to create an executable file."
3157     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3158         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3159         echo "Only do this if you know what cross compiling means."
3160     fi
3161     die "C compiler test failed."
3162 fi
3163
3164 add_cppflags -D_ISOC99_SOURCE
3165 check_cflags -std=c99
3166 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3167 #include <stdlib.h>
3168 EOF
3169 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3170 #include <stdlib.h>
3171 EOF
3172
3173 add_host_cppflags -D_ISOC99_SOURCE
3174 check_host_cflags -std=c99
3175 check_host_cflags -Wall
3176 check_host_cflags -O3
3177
3178 check_64bit(){
3179     arch32=$1
3180     arch64=$2
3181     expr=$3
3182     check_code cc "" "int test[2*($expr) - 1]" &&
3183         subarch=$arch64 || subarch=$arch32
3184 }
3185
3186 case "$arch" in
3187     aarch64|alpha|ia64)
3188         spic=$shared
3189     ;;
3190     mips)
3191         check_64bit mips mips64 '_MIPS_SIM > 1'
3192         spic=$shared
3193     ;;
3194     parisc)
3195         check_64bit parisc parisc64 'sizeof(void *) > 4'
3196         spic=$shared
3197     ;;
3198     ppc)
3199         check_64bit ppc ppc64 'sizeof(void *) > 4'
3200         spic=$shared
3201     ;;
3202     sparc)
3203         check_64bit sparc sparc64 'sizeof(void *) > 4'
3204         spic=$shared
3205     ;;
3206     x86)
3207         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3208         if test "$subarch" = "x86_64"; then
3209             spic=$shared
3210         fi
3211     ;;
3212 esac
3213
3214 enable $subarch
3215 enabled spic && enable_weak pic
3216
3217 # OS specific
3218 case $target_os in
3219     aix)
3220         SHFLAGS=-shared
3221         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3222         enabled shared && add_ldflags -Wl,-brtl
3223         ;;
3224     haiku)
3225         prefix_default="/boot/common"
3226         network_extralibs="-lnetwork"
3227         host_libs=
3228         ;;
3229     sunos)
3230         SHFLAGS='-shared -Wl,-h,$$(@F)'
3231         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3232         network_extralibs="-lsocket -lnsl"
3233         # When using suncc to build, the Solaris linker will mark
3234         # an executable with each instruction set encountered by
3235         # the Solaris assembler.  As our libraries contain their own
3236         # guards for processor-specific code, instead suppress
3237         # generation of the HWCAPS ELF section on Solaris x86 only.
3238         enabled_all suncc x86 &&
3239             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3240             add_ldflags -Wl,-M,mapfile
3241         nm_default='nm -P -g'
3242         ;;
3243     netbsd)
3244         disable symver
3245         oss_indev_extralibs="-lossaudio"
3246         oss_outdev_extralibs="-lossaudio"
3247         ;;
3248     openbsd|bitrig)
3249         disable symver
3250         SHFLAGS='-shared'
3251         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3252         SLIB_INSTALL_LINKS=
3253         oss_indev_extralibs="-lossaudio"
3254         oss_outdev_extralibs="-lossaudio"
3255         ;;
3256     dragonfly)
3257         disable symver
3258         ;;
3259     freebsd)
3260         ;;
3261     bsd/os)
3262         add_extralibs -lpoll -lgnugetopt
3263         ;;
3264     darwin)
3265         gas="gas-preprocessor.pl $cc"
3266         enabled ppc && add_asflags -force_cpusubtype_ALL
3267         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3268         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3269         add_ldflags -Wl,-dynamic,-search_paths_first
3270         SLIBSUF=".dylib"
3271         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3272         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3273         objformat="macho"
3274         enabled x86_64 && objformat="macho64"
3275         enabled_any pic shared ||
3276             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3277         ;;
3278     mingw32*)
3279         if test $target_os = "mingw32ce"; then
3280             disable network
3281         else
3282             target_os=mingw32
3283         fi
3284         LIBTARGET=i386
3285         if enabled x86_64; then
3286             LIBTARGET="i386:x86-64"
3287         elif enabled arm; then
3288             LIBTARGET=arm-wince
3289         fi
3290         check_ldflags -Wl,--nxcompat
3291         check_ldflags -Wl,--dynamicbase
3292         shlibdir_default="$bindir_default"
3293         SLIBPREF=""
3294         SLIBSUF=".dll"
3295         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3296         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3297         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3298         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3299         SLIB_INSTALL_LINKS=
3300         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3301         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3302         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3303         objformat="win32"
3304         dlltool="${cross_prefix}dlltool"
3305         ranlib=:
3306         enable dos_paths
3307         ;;
3308     win32|win64)
3309         disable symver
3310         if enabled shared; then
3311             # Link to the import library instead of the normal static library
3312             # for shared libs.
3313             LD_LIB='%.lib'
3314             # Cannot build both shared and static libs with MSVC or icl.
3315             disable static
3316         fi
3317         shlibdir_default="$bindir_default"
3318         SLIBPREF=""
3319         SLIBSUF=".dll"
3320         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3321         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3322         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3323         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3324         SLIB_INSTALL_LINKS=
3325         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3326         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3327         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3328         objformat="win32"
3329         ranlib=:
3330         enable dos_paths
3331         ;;
3332     cygwin*)
3333         target_os=cygwin
3334         shlibdir_default="$bindir_default"
3335         SLIBPREF="cyg"
3336         SLIBSUF=".dll"
3337         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3338         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3339         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3340         SLIB_INSTALL_LINKS=
3341         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3342         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3343         objformat="win32"
3344         enable dos_paths
3345         ;;
3346     *-dos|freedos|opendos)
3347         network_extralibs="-lsocket"
3348         objformat="coff"
3349         enable dos_paths
3350         add_cppflags -U__STRICT_ANSI__
3351         ;;
3352     linux)
3353         enable dv1394
3354         ;;
3355     irix*)
3356         target_os=irix
3357         ranlib="echo ignoring ranlib"
3358         ;;
3359     os/2*)
3360         ln_s="cp -f"
3361         objformat="aout"
3362         add_cppflags -D_GNU_SOURCE
3363         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3364         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3365         LIBSUF="_s.a"
3366         SLIBPREF=""
3367         SLIBSUF=".dll"
3368         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3369         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3370         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3371             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3372             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3373             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3374             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3375             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3376         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3377             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3378         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3379         enable dos_paths
3380         ;;
3381     gnu/kfreebsd)
3382         add_cppflags -D_BSD_SOURCE
3383         ;;
3384     gnu)
3385         ;;
3386     qnx)
3387         add_cppflags -D_QNX_SOURCE
3388         network_extralibs="-lsocket"
3389         ;;
3390     symbian)
3391         SLIBSUF=".dll"
3392         enable dos_paths
3393         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3394         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3395         add_ldflags -Wl,--target1-abs,--no-undefined \
3396                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3397                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3398         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3399                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3400                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3401         ;;
3402     osf1)
3403         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3404         ;;
3405     minix)
3406         ;;
3407     plan9)
3408         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3409                      -D_REENTRANT_SOURCE        \
3410                      -D_RESEARCH_SOURCE         \
3411                      -DFD_SETSIZE=96            \
3412                      -DHAVE_SOCK_OPTS
3413         add_compat strtod.o strtod=avpriv_strtod
3414         network_extralibs='-lbsd'
3415         exeobjs=compat/plan9/main.o
3416         disable avserver
3417         cp_f='cp'
3418         ;;
3419     none)
3420         ;;
3421     *)
3422         die "Unknown OS '$target_os'."
3423         ;;
3424 esac
3425
3426 # determine libc flavour
3427
3428 probe_libc(){
3429     pfx=$1
3430     pfx_no_=${pfx%_}
3431     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3432     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3433         eval ${pfx}libc_type=uclibc
3434         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3435     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3436         eval ${pfx}libc_type=glibc
3437         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3438     # MinGW headers can be installed on Cygwin, so check for newlib first.
3439     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3440         eval ${pfx}libc_type=newlib
3441         add_${pfx}cppflags -U__STRICT_ANSI__
3442     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3443     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3444         eval ${pfx}libc_type=mingw64
3445         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3446         eval test \$${pfx_no_}cc_type = "gcc" &&
3447             add_${pfx}cppflags -D__printf__=__gnu_printf__
3448     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3449          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3450         eval ${pfx}libc_type=mingw32
3451         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3452             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3453             die "ERROR: MinGW32 runtime version must be >= 3.15."
3454         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3455         eval test \$${pfx_no_}cc_type = "gcc" &&
3456             add_${pfx}cppflags -D__printf__=__gnu_printf__
3457     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3458         eval ${pfx}libc_type=msvcrt
3459         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3460         # 0x601 by default unless something else is set by the user.
3461         # This can easily lead to us detecting functions only present
3462         # in such new versions and producing binaries requiring windows 7.0.
3463         # Therefore explicitly set the default to XP unless the user has
3464         # set something else on the command line.
3465         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3466             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3467     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3468         eval ${pfx}libc_type=klibc
3469     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3470         eval ${pfx}libc_type=bionic
3471     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3472         eval ${pfx}libc_type=solaris
3473         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3474     fi
3475 }
3476
3477 probe_libc
3478 test -n "$libc_type" && enable libc_$libc_type
3479 probe_libc host_
3480 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3481
3482 case $libc_type in
3483     bionic)
3484         add_compat strtod.o strtod=avpriv_strtod
3485         ;;
3486     msvcrt)
3487         add_compat strtod.o strtod=avpriv_strtod
3488         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3489                                      _snprintf=avpriv_snprintf  \
3490                                      vsnprintf=avpriv_vsnprintf
3491         ;;
3492 esac
3493
3494 # hacks for compiler/libc/os combinations
3495
3496 if enabled_all tms470 libc_glibc; then
3497     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3498     add_cppflags -D__USER_LABEL_PREFIX__=
3499     add_cppflags -D__builtin_memset=memset
3500     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3501     add_cflags   -pds=48    # incompatible redefinition of macro
3502 fi
3503
3504 if enabled_all ccc libc_glibc; then
3505     add_ldflags -Wl,-z,now  # calls to libots crash without this
3506 fi
3507
3508 esc(){
3509     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3510 }
3511
3512 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3513
3514 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3515
3516 set_default $PATHS_LIST
3517 set_default nm
3518
3519 # we need to build at least one lib type
3520 if ! enabled_any static shared; then
3521     cat <<EOF
3522 At least one library type must be built.
3523 Specify --enable-static to build the static libraries or --enable-shared to
3524 build the shared libraries as well. To only build the shared libraries specify
3525 --disable-static in addition to --enable-shared.
3526 EOF
3527     exit 1;
3528 fi
3529
3530 die_license_disabled() {
3531     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3532 }
3533
3534 die_license_disabled gpl libcdio
3535 die_license_disabled gpl libx264
3536 die_license_disabled gpl libx265
3537 die_license_disabled gpl libxavs
3538 die_license_disabled gpl libxvid
3539 die_license_disabled gpl x11grab
3540
3541 die_license_disabled nonfree libfaac
3542 die_license_disabled nonfree libfdk_aac
3543 die_license_disabled nonfree openssl
3544
3545 die_license_disabled version3 libopencore_amrnb
3546 die_license_disabled version3 libopencore_amrwb
3547 die_license_disabled version3 libvo_aacenc
3548 die_license_disabled version3 libvo_amrwbenc
3549
3550 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3551
3552 disabled optimizations || check_cflags -fomit-frame-pointer
3553
3554 enable_weak_pic() {
3555     disabled pic && return
3556     enable pic
3557     add_cppflags -DPIC
3558     case "$target_os" in
3559     mingw*|cygwin*)
3560         ;;
3561     *)
3562         add_cflags -fPIC
3563         ;;
3564     esac
3565     add_asflags  -fPIC
3566 }
3567
3568 enabled pic && enable_weak_pic
3569
3570 check_cc <<EOF || die "Symbol mangling check failed."
3571 int ff_extern;
3572 EOF
3573 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3574 extern_prefix=${sym%%ff_extern*}
3575
3576 check_cc <<EOF && enable_weak inline_asm
3577 void foo(void) { __asm__ volatile ("" ::); }
3578 EOF
3579
3580 _restrict=
3581 for restrict_keyword in restrict __restrict__ __restrict; do
3582     check_cc <<EOF && _restrict=$restrict_keyword && break
3583 void foo(char * $restrict_keyword p);
3584 EOF
3585 done
3586
3587 check_cc <<EOF && enable pragma_deprecated
3588 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3589 EOF
3590
3591 check_cc <<EOF && enable attribute_packed
3592 struct { int x; } __attribute__((packed)) x;
3593 EOF
3594
3595 check_cc <<EOF && enable attribute_may_alias
3596 union { int x; } __attribute__((may_alias)) x;
3597 EOF
3598
3599 check_cc <<EOF || die "endian test failed"
3600 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3601 EOF
3602 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3603
3604 check_inline_asm inline_asm_labels '"1:\n"'
3605
3606 if enabled aarch64; then
3607     # internal assembler in clang 3.3 does not support this instruction
3608     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3609     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3610
3611     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3612
3613 elif enabled alpha; then
3614
3615     check_cflags -mieee
3616
3617 elif enabled arm; then
3618
3619     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3620     enabled thumb && check_cflags -mthumb || check_cflags -marm
3621     nogas=die
3622
3623     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3624         enable vfp_args
3625     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3626         case "${cross_prefix:-$cc}" in
3627             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3628             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3629 __asm__ (".eabi_attribute 28, 1");
3630 int main(void) { return 0; }
3631 EOF
3632         esac
3633         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3634     fi
3635
3636     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3637     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3638     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3639     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3640     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3641     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3642
3643     [ $target_os = linux ] ||
3644         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3645             $ARCH_EXT_LIST_ARM
3646
3647     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3648     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3649
3650     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3651
3652 elif enabled mips; then
3653
3654     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3655
3656 elif enabled parisc; then
3657
3658     if enabled gcc; then
3659         case $($cc -dumpversion) in
3660             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3661         esac
3662     fi
3663
3664 elif enabled ppc; then
3665
3666     enable local_aligned_8 local_aligned_16
3667
3668     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3669     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3670     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3671     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3672
3673     # AltiVec flags: The FSF version of GCC differs from the Apple version
3674     if enabled altivec; then
3675         nogas=warn
3676         check_cflags -maltivec -mabi=altivec &&
3677         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3678         check_cflags -faltivec
3679
3680         # check if our compiler supports Motorola AltiVec C API
3681         check_cc <<EOF || disable altivec
3682 $inc_altivec_h
3683 int main(void) {
3684     vector signed int v1 = (vector signed int) { 0 };
3685     vector signed int v2 = (vector signed int) { 1 };
3686     v1 = vec_add(v1, v2);
3687     return 0;
3688 }
3689 EOF
3690
3691         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3692     fi
3693
3694 elif enabled sparc; then
3695
3696     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3697
3698 elif enabled x86; then
3699
3700     check_builtin rdtsc    intrin.h   "__rdtsc()"
3701     check_builtin mm_empty mmintrin.h "_mm_empty()"
3702
3703     enable local_aligned_8 local_aligned_16
3704
3705     # check whether EBP is available on x86
3706     # As 'i' is stored on the stack, this program will crash
3707     # if the base pointer is used to access it because the
3708     # base pointer is cleared in the inline assembly code.
3709     check_exec_crash <<EOF && enable ebp_available
3710 volatile int i=0;
3711 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3712 return i;
3713 EOF
3714
3715     # check whether EBX is available on x86
3716     check_inline_asm ebx_available '""::"b"(0)' &&
3717         check_inline_asm ebx_available '"":::"%ebx"'
3718
3719     # check whether xmm clobbers are supported
3720     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3721
3722     # check whether binutils is new enough to compile SSSE3/MMXEXT
3723     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3724     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3725
3726     if ! disabled_any asm mmx yasm; then
3727         if check_cmd $yasmexe --version; then
3728             enabled x86_64 && yasm_extra="-m amd64"
3729             yasm_debug="-g dwarf2"
3730         elif check_cmd nasm -v; then
3731             yasmexe=nasm
3732             yasm_debug="-g -F dwarf"
3733             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3734         fi
3735
3736         YASMFLAGS="-f $objformat $yasm_extra"
3737         enabled pic               && append YASMFLAGS "-DPIC"
3738         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3739         case "$objformat" in
3740             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3741         esac
3742
3743         check_yasm "movbe ecx, [5]" && enable yasm ||
3744             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3745         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3746         check_yasm "CPU amdnop" && enable cpunop
3747     fi
3748
3749     case "$cpu" in
3750         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3751             disable fast_clz
3752         ;;
3753     esac
3754
3755 fi
3756
3757 if enabled asm; then
3758     as=${gas:=$as}
3759     check_as <<EOF && enable gnu_as || \
3760         $nogas "GNU assembler not found, install gas-preprocessor"
3761 .macro m n
3762 \n: .int 0
3763 .endm
3764 m x
3765 EOF
3766 fi
3767
3768 check_ldflags -Wl,--as-needed
3769
3770 if check_func dlopen; then
3771     ldl=
3772 elif check_func dlopen -ldl; then
3773     ldl=-ldl
3774 fi
3775
3776 if ! disabled network; then
3777     check_type "sys/types.h sys/socket.h" socklen_t
3778     check_type netdb.h "struct addrinfo"
3779     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3780     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3781     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3782     check_type netinet/in.h "struct sockaddr_in6"
3783     check_type poll.h "struct pollfd"
3784     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3785     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3786     check_type netinet/sctp.h "struct sctp_event_subscribe"
3787     check_func getaddrinfo $network_extralibs
3788     check_func getservbyport $network_extralibs
3789     # Prefer arpa/inet.h over winsock2
3790     if check_header arpa/inet.h ; then
3791         check_func closesocket
3792     elif check_header winsock2.h ; then
3793         check_func_headers winsock2.h closesocket -lws2 &&
3794             network_extralibs="-lws2" ||
3795         { check_func_headers winsock2.h closesocket -lws2_32 &&
3796             network_extralibs="-lws2_32"; } || disable winsock2_h network
3797         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3798         check_type ws2tcpip.h socklen_t
3799         check_type ws2tcpip.h "struct addrinfo"
3800         check_type ws2tcpip.h "struct group_source_req"
3801         check_type ws2tcpip.h "struct ip_mreq_source"
3802         check_type ws2tcpip.h "struct ipv6_mreq"
3803         check_type winsock2.h "struct pollfd"
3804         check_type ws2tcpip.h "struct sockaddr_in6"
3805         check_type ws2tcpip.h "struct sockaddr_storage"
3806         check_struct winsock2.h "struct sockaddr" sa_len
3807     else
3808         disable network
3809     fi
3810 fi
3811
3812 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3813 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3814
3815 check_func  fcntl
3816 check_func  fork
3817 check_func_headers stdlib.h getenv
3818 check_func  gethrtime
3819 check_func  getopt
3820 check_func  getrusage
3821 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3822 check_func  gettimeofday
3823 check_func  inet_aton $network_extralibs
3824 check_func  isatty
3825 check_func  localtime_r
3826 check_func  ${malloc_prefix}memalign            && enable memalign
3827 check_func  mkstemp
3828 check_func  mmap
3829 check_func  mprotect
3830 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3831 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3832 check_func  setrlimit
3833 check_func  strerror_r
3834 check_func  strptime
3835 check_func  strtok_r
3836 check_func  sched_getaffinity
3837 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3838 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3839 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3840 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3841 check_func  sysconf
3842 check_func  sysctl
3843 check_func  usleep
3844 check_func_headers io.h setmode
3845 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3846 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3847 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3848 check_func_headers windows.h GetProcessAffinityMask
3849 check_func_headers windows.h GetProcessTimes
3850 check_func_headers windows.h GetSystemTimeAsFileTime
3851 check_func_headers windows.h MapViewOfFile
3852 check_func_headers windows.h SetConsoleTextAttribute
3853 check_func_headers windows.h Sleep
3854 check_func_headers windows.h VirtualAlloc
3855
3856 check_header direct.h
3857 check_header dlfcn.h
3858 check_header dxva.h
3859 check_header dxva2api.h
3860 check_header io.h
3861 check_header malloc.h
3862 check_header poll.h
3863 check_header sys/mman.h
3864 check_header sys/param.h
3865 check_header sys/resource.h
3866 check_header sys/select.h
3867 check_header sys/time.h
3868 check_header sys/un.h
3869 check_header unistd.h
3870 check_header vdpau/vdpau.h
3871 check_header vdpau/vdpau_x11.h
3872 check_header VideoDecodeAcceleration/VDADecoder.h
3873 check_header windows.h
3874 check_header X11/extensions/XvMClib.h
3875
3876 if ! disabled w32threads && ! enabled pthreads; then
3877     check_func_headers "windows.h process.h" _beginthreadex &&
3878         enable w32threads || disable w32threads
3879 fi
3880
3881 # check for some common methods of building with pthread support
3882 # do this before the optional library checks as some of them require pthreads
3883 if ! disabled pthreads && ! enabled w32threads; then
3884     enable pthreads
3885     if check_func pthread_join -pthread; then
3886         add_cflags -pthread
3887         add_extralibs -pthread
3888     elif check_func pthread_join -pthreads; then
3889         add_cflags -pthreads
3890         add_extralibs -pthreads
3891     elif check_func pthread_join -lpthreadGC2; then
3892         add_extralibs -lpthreadGC2
3893     elif check_lib pthread.h pthread_join -lpthread; then
3894         :
3895     elif ! check_func pthread_join; then
3896         disable pthreads
3897     fi
3898 fi
3899
3900 for thread in $THREADS_LIST; do
3901     if enabled $thread; then
3902         test -n "$thread_type" &&
3903             die "ERROR: Only one thread type must be selected." ||
3904             thread_type="$thread"
3905     fi
3906 done
3907
3908 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3909 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3910
3911 check_lib math.h sin -lm && LIBM="-lm"
3912 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3913
3914 atan2f_args=2
3915 ldexpf_args=2
3916 powf_args=2
3917
3918 for func in $MATH_FUNCS; do
3919     eval check_mathfunc $func \${${func}_args:-1}
3920 done
3921
3922 # these are off by default, so fail if requested and not available
3923 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
3924                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
3925                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
3926 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3927 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3928 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3929 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3930 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
3931 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3932                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3933                                done || die "ERROR: libgsm not found"; }
3934 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3935 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3936 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3937 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3938 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3939 enabled libopenjpeg       && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3940 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3941 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3942 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3943 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3944 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3945 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3946 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3947 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3948 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3949 enabled libvpx            && {
3950     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3951                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3952     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3953                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3954     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3955     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3956 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3957 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
3958 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3959                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3960                                die "ERROR: libx264 version must be >= 0.118."; }
3961 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
3962                              { check_cpp_condition x265.h "X265_BUILD >= 5" ||
3963                                die "ERROR: libx265 version must be >= 5."; }
3964 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3965 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3966 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3967                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3968                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3969                                die "ERROR: openssl not found"; }
3970
3971 if enabled gnutls; then
3972     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3973     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3974 fi
3975
3976 # libdc1394 check
3977 if enabled libdc1394; then
3978     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3979         enable libdc1394_2; } ||
3980     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3981         enable libdc1394_1; } ||
3982     die "ERROR: No version of libdc1394 found "
3983 fi
3984
3985 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3986     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3987     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3988     enable sdl
3989 fi
3990
3991 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
3992 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3993
3994 check_header linux/fb.h
3995 check_header linux/videodev2.h
3996 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3997
3998 check_header sys/videoio.h
3999
4000 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4001 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4002 # w32api 3.12 had it defined wrong
4003 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4004
4005 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4006 { check_header dev/bktr/ioctl_meteor.h &&
4007   check_header dev/bktr/ioctl_bt848.h; } ||
4008 { check_header machine/ioctl_meteor.h &&
4009   check_header machine/ioctl_bt848.h; } ||
4010 { check_header dev/video/meteor/ioctl_meteor.h &&
4011   check_header dev/video/bktr/ioctl_bt848.h; } ||
4012 check_header dev/ic/bt8xx.h
4013
4014 check_header sndio.h
4015 check_header sys/soundcard.h
4016 check_header soundcard.h
4017
4018 enabled_any alsa_indev alsa_outdev &&
4019     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4020
4021 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4022     check_func jack_port_get_latency_range -ljack
4023
4024 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4025
4026 if enabled libcdio; then
4027     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4028     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4029 fi
4030
4031 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4032
4033 enabled x11grab                                           &&
4034 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4035 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4036 { enabled xlib || die "ERROR: Xlib not found"; }
4037
4038 enabled vdpau &&
4039     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4040     disable vdpau
4041
4042 enabled vdpau && enabled xlib &&
4043     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4044     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4045     enable vdpau_x11
4046
4047 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4048
4049 # add some useful compiler flags if supported
4050 check_cflags -Wdeclaration-after-statement
4051 check_cflags -Wall
4052 check_cflags -Wdisabled-optimization
4053 check_cflags -Wpointer-arith
4054 check_cflags -Wredundant-decls
4055 check_cflags -Wcast-qual
4056 check_cflags -Wwrite-strings
4057 check_cflags -Wtype-limits
4058 check_cflags -Wundef
4059 check_cflags -Wmissing-prototypes
4060 check_cflags -Wstrict-prototypes
4061 enabled extra_warnings && check_cflags -Winline
4062
4063 check_disable_warning(){
4064     warning_flag=-W${1#-Wno-}
4065     test_cflags $warning_flag && add_cflags $1
4066 }
4067
4068 check_disable_warning -Wno-parentheses
4069 check_disable_warning -Wno-switch
4070 check_disable_warning -Wno-format-zero-length
4071 check_disable_warning -Wno-pointer-sign
4072
4073 # add some linker flags
4074 check_ldflags -Wl,--warn-common
4075 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4076 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4077
4078 # add some strip flags
4079 # -wN '..@*' is more selective than -x, but not available everywhere.
4080 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4081
4082 enabled neon_clobber_test &&
4083     check_ldflags -Wl,--wrap,avcodec_open2              \
4084                   -Wl,--wrap,avcodec_decode_audio4      \
4085                   -Wl,--wrap,avcodec_decode_video2      \
4086                   -Wl,--wrap,avcodec_decode_subtitle2   \
4087                   -Wl,--wrap,avcodec_encode_audio2      \
4088                   -Wl,--wrap,avcodec_encode_video2      \
4089                   -Wl,--wrap,avcodec_encode_subtitle    \
4090                   -Wl,--wrap,avresample_convert ||
4091     disable neon_clobber_test
4092
4093 enabled xmm_clobber_test &&
4094     check_ldflags -Wl,--wrap,avcodec_open2              \
4095                   -Wl,--wrap,avcodec_decode_audio4      \
4096                   -Wl,--wrap,avcodec_decode_video2      \
4097                   -Wl,--wrap,avcodec_decode_subtitle2   \
4098                   -Wl,--wrap,avcodec_encode_audio2      \
4099                   -Wl,--wrap,avcodec_encode_video2      \
4100                   -Wl,--wrap,avcodec_encode_subtitle    \
4101                   -Wl,--wrap,avresample_convert         \
4102                   -Wl,--wrap,sws_scale ||
4103     disable xmm_clobber_test
4104
4105 echo "X{};" > $TMPV
4106 if test_ldflags -Wl,--version-script,$TMPV; then
4107     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4108     check_cc <<EOF && enable symver_asm_label
4109 void ff_foo(void) __asm__ ("av_foo@VERSION");
4110 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4111 EOF
4112     check_cc <<EOF && enable symver_gnu_asm
4113 __asm__(".symver ff_foo,av_foo@VERSION");
4114 void ff_foo(void) {}
4115 EOF
4116 fi
4117
4118 if [ -z "$optflags" ]; then
4119     if enabled small; then
4120         optflags=$cflags_size
4121     elif enabled optimizations; then
4122         optflags=$cflags_speed
4123     else
4124         optflags=$cflags_noopt
4125     fi
4126 fi
4127
4128 check_optflags(){
4129     check_cflags "$@"
4130     enabled lto && check_ldflags "$@"
4131 }
4132
4133
4134 if enabled lto; then
4135     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4136     check_cflags  -flto
4137     check_ldflags -flto $cpuflags
4138 fi
4139
4140 check_optflags $optflags
4141 check_optflags -fno-math-errno
4142 check_optflags -fno-signed-zeros
4143
4144 if enabled icc; then
4145     # Just warnings, no remarks
4146     check_cflags -w1
4147     # -wd: Disable following warnings
4148     # 144, 167, 556: -Wno-pointer-sign
4149     # 1292: attribute "foo" ignored
4150     # 1419: external declaration in primary source file
4151     # 10006: ignoring unknown option -fno-signed-zeros
4152     # 10148: ignoring unknown option -Wno-parentheses
4153     # 10156: ignoring option '-W'; no argument required
4154     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4155     # 11030: Warning unknown option --as-needed
4156     # 10156: ignoring option '-export'; no argument required
4157     check_ldflags -wd10156,11030
4158     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4159     enable ebp_available
4160     if enabled x86_32; then
4161         icc_version=$($cc -dumpversion)
4162         test ${icc_version%%.*} -ge 11 &&
4163             check_cflags -falign-stack=maintain-16-byte ||
4164             disable aligned_stack
4165     fi
4166 elif enabled ccc; then
4167     # disable some annoying warnings
4168     add_cflags -msg_disable bitnotint
4169     add_cflags -msg_disable mixfuncvoid
4170     add_cflags -msg_disable nonstandcast
4171     add_cflags -msg_disable unsupieee
4172 elif enabled gcc; then
4173     check_optflags -fno-tree-vectorize
4174     check_cflags -Werror=implicit-function-declaration
4175     check_cflags -Werror=missing-prototypes
4176     check_cflags -Werror=return-type
4177     check_cflags -Werror=declaration-after-statement
4178     check_cflags -Werror=vla
4179     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4180 elif enabled llvm_gcc; then
4181     check_cflags -mllvm -stack-alignment=16
4182 elif enabled clang; then
4183     check_cflags -mllvm -stack-alignment=16
4184     check_cflags -Qunused-arguments
4185     check_cflags -Werror=implicit-function-declaration
4186     check_cflags -Werror=missing-prototypes
4187     check_cflags -Werror=return-type
4188 elif enabled cparser; then
4189     add_cflags -Wno-missing-variable-declarations
4190     add_cflags -Wno-empty-statement
4191 elif enabled armcc; then
4192     # 2523: use of inline assembler is deprecated
4193     add_cflags -W${armcc_opt},--diag_suppress=2523
4194     add_cflags -W${armcc_opt},--diag_suppress=1207
4195     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4196     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4197     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4198     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4199 elif enabled tms470; then
4200     add_cflags -pds=824 -pds=837
4201     disable inline_asm
4202 elif enabled pathscale; then
4203     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4204 elif enabled_any msvc icl; then
4205     enabled x86_32 && disable aligned_stack
4206     enabled_all x86_32 debug && add_cflags -Oy-
4207     enabled debug && add_ldflags -debug
4208     enable pragma_deprecated
4209     if enabled icl; then
4210         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4211         # (correctly) on icl 13.x.
4212         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4213             add_cflags -Qansi-alias
4214         # icl will pass the inline asm tests but inline asm is currently
4215         # not supported (build will fail)
4216         disable inline_asm
4217     fi
4218 fi
4219
4220 case $as_type in
4221     clang)
4222         add_asflags -Qunused-arguments
4223     ;;
4224 esac
4225
4226 case $ld_type in
4227     clang)
4228         check_ldflags -Qunused-arguments
4229     ;;
4230 esac
4231
4232 case $target_os in
4233     osf1)
4234         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4235     ;;
4236     plan9)
4237         add_cppflags -Dmain=plan9_main
4238     ;;
4239 esac
4240
4241 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4242
4243 check_deps $CONFIG_LIST       \
4244            $CONFIG_EXTRA      \
4245            $HAVE_LIST         \
4246            $ALL_COMPONENTS    \
4247
4248 ! enabled_any memalign posix_memalign aligned_malloc &&
4249     enabled_any $need_memalign && enable memalign_hack
4250
4251 echo "install prefix            $prefix"
4252 echo "source path               $source_path"
4253 echo "C compiler                $cc"
4254 echo "C library                 $libc_type"
4255 if test "$host_cc" != "$cc"; then
4256     echo "host C compiler           $host_cc"
4257     echo "host C library            $host_libc_type"
4258 fi
4259 echo "ARCH                      $arch ($cpu)"
4260 if test "$build_suffix" != ""; then
4261     echo "build suffix              $build_suffix"
4262 fi
4263 if test "$extra_version" != ""; then
4264     echo "version string suffix     $extra_version"
4265 fi
4266 echo "big-endian                ${bigendian-no}"
4267 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4268 if enabled x86; then
4269     echo "${yasmexe}                      ${yasm-no}"
4270     echo "MMX enabled               ${mmx-no}"
4271     echo "MMXEXT enabled            ${mmxext-no}"
4272     echo "3DNow! enabled            ${amd3dnow-no}"
4273     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4274     echo "SSE enabled               ${sse-no}"
4275     echo "SSSE3 enabled             ${ssse3-no}"
4276     echo "AVX enabled               ${avx-no}"
4277     echo "FMA4 enabled              ${fma4-no}"
4278     echo "i686 features enabled     ${i686-no}"
4279     echo "CMOV is fast              ${fast_cmov-no}"
4280     echo "EBX available             ${ebx_available-no}"
4281     echo "EBP available             ${ebp_available-no}"
4282 fi
4283 if enabled aarch64; then
4284     echo "NEON enabled              ${neon-no}"
4285     echo "VFP enabled               ${vfp-no}"
4286 fi
4287 if enabled arm; then
4288     echo "ARMv5TE enabled           ${armv5te-no}"
4289     echo "ARMv6 enabled             ${armv6-no}"
4290     echo "ARMv6T2 enabled           ${armv6t2-no}"
4291     echo "VFP enabled               ${vfp-no}"
4292     echo "NEON enabled              ${neon-no}"
4293 fi
4294 if enabled ppc; then
4295     echo "AltiVec enabled           ${altivec-no}"
4296     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4297     echo "dcbzl available           ${dcbzl-no}"
4298 fi
4299 if enabled sparc; then
4300     echo "VIS enabled               ${vis-no}"
4301 fi
4302 echo "debug symbols             ${debug-no}"
4303 echo "optimize for size         ${small-no}"
4304 echo "optimizations             ${optimizations-no}"
4305 echo "static                    ${static-no}"
4306 echo "shared                    ${shared-no}"
4307 echo "new filter support        ${avfilter-no}"
4308 echo "network support           ${network-no}"
4309 echo "threading support         ${thread_type-no}"
4310 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4311 echo "SDL support               ${sdl-no}"
4312 test -n "$random_seed" &&
4313     echo "random seed               ${random_seed}"
4314 echo
4315
4316 echo "External libraries:"
4317 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4318 echo
4319
4320 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4321     echo "Enabled ${type}s:"
4322     eval list=\$$(toupper $type)_LIST
4323     print_enabled '_*' $list | print_3_columns
4324     echo
4325 done
4326
4327 license="LGPL version 2.1 or later"
4328 if enabled nonfree; then
4329     license="nonfree and unredistributable"
4330 elif enabled gplv3; then
4331     license="GPL version 3 or later"
4332 elif enabled lgplv3; then
4333     license="LGPL version 3 or later"
4334 elif enabled gpl; then
4335     license="GPL version 2 or later"
4336 fi
4337
4338 echo "License: $license"
4339
4340 echo "Creating config.mak and config.h..."
4341
4342 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4343
4344 config_files="$TMPH config.mak"
4345
4346 cat > config.mak <<EOF
4347 # Automatically generated by configure - do not modify!
4348 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4349 prefix=$prefix
4350 LIBDIR=\$(DESTDIR)$libdir
4351 SHLIBDIR=\$(DESTDIR)$shlibdir
4352 INCDIR=\$(DESTDIR)$incdir
4353 BINDIR=\$(DESTDIR)$bindir
4354 DATADIR=\$(DESTDIR)$datadir
4355 DOCDIR=\$(DESTDIR)$docdir
4356 MANDIR=\$(DESTDIR)$mandir
4357 SRC_PATH=$source_path
4358 CC_IDENT=$cc_ident
4359 ARCH=$arch
4360 CC=$cc
4361 AS=$as
4362 LD=$ld
4363 DEPCC=$dep_cc
4364 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4365 DEPAS=$as
4366 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4367 YASM=$yasmexe
4368 DEPYASM=$yasmexe
4369 AR=$ar
4370 ARFLAGS=$arflags
4371 AR_O=$ar_o
4372 RANLIB=$ranlib
4373 STRIP=$strip
4374 LN_S=$ln_s
4375 CPPFLAGS=$CPPFLAGS
4376 CFLAGS=$CFLAGS
4377 ASFLAGS=$ASFLAGS
4378 AS_C=$AS_C
4379 AS_O=$AS_O
4380 CC_C=$CC_C
4381 CC_E=$CC_E
4382 CC_O=$CC_O
4383 LD_O=$LD_O
4384 LD_LIB=$LD_LIB
4385 LD_PATH=$LD_PATH
4386 DLLTOOL=$dlltool
4387 LDFLAGS=$LDFLAGS
4388 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4389 STRIPFLAGS=$STRIPFLAGS
4390 YASMFLAGS=$YASMFLAGS
4391 BUILDSUF=$build_suffix
4392 FULLNAME=$FULLNAME
4393 LIBPREF=$LIBPREF
4394 LIBSUF=$LIBSUF
4395 LIBNAME=$LIBNAME
4396 SLIBPREF=$SLIBPREF
4397 SLIBSUF=$SLIBSUF
4398 EXESUF=$EXESUF
4399 EXTRA_VERSION=$extra_version
4400 CCDEP=$CCDEP
4401 CCDEP_FLAGS=$CCDEP_FLAGS
4402 ASDEP=$ASDEP
4403 ASDEP_FLAGS=$ASDEP_FLAGS
4404 CC_DEPFLAGS=$CC_DEPFLAGS
4405 AS_DEPFLAGS=$AS_DEPFLAGS
4406 HOSTCC=$host_cc
4407 HOSTLD=$host_ld
4408 HOSTCFLAGS=$host_cflags
4409 HOSTCPPFLAGS=$host_cppflags
4410 HOSTEXESUF=$HOSTEXESUF
4411 HOSTLDFLAGS=$host_ldflags
4412 HOSTLIBS=$host_libs
4413 DEPHOSTCC=$host_cc
4414 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4415 HOSTCCDEP=$HOSTCCDEP
4416 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4417 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4418 HOSTCC_C=$HOSTCC_C
4419 HOSTCC_O=$HOSTCC_O
4420 HOSTLD_O=$HOSTLD_O
4421 TARGET_EXEC=$target_exec $target_exec_args
4422 TARGET_PATH=$target_path
4423 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4424 CFLAGS-avplay=$sdl_cflags
4425 ZLIB=$($ldflags_filter -lz)
4426 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4427 EXTRALIBS=$extralibs
4428 COMPAT_OBJS=$compat_objs
4429 EXEOBJS=$exeobjs
4430 INSTALL=install
4431 LIBTARGET=${LIBTARGET}
4432 SLIBNAME=${SLIBNAME}
4433 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4434 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4435 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4436 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4437 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4438 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4439 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4440 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4441 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4442 EOF
4443
4444 get_version(){
4445     lcname=lib${1}
4446     name=$(toupper $lcname)
4447     file=$source_path/$lcname/version.h
4448     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4449     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4450     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4451     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4452     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4453 }
4454
4455 map 'get_version $v' $LIBRARY_LIST
4456
4457 print_program_libs(){
4458     eval "program_libs=\$${1}_libs"
4459     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4460 }
4461
4462 map 'print_program_libs $v' $PROGRAM_LIST
4463
4464 cat > $TMPH <<EOF
4465 /* Automatically generated by configure - do not modify! */
4466 #ifndef LIBAV_CONFIG_H
4467 #define LIBAV_CONFIG_H
4468 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4469 #define LIBAV_LICENSE "$(c_escape $license)"
4470 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4471 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4472 #define restrict $_restrict
4473 #define EXTERN_PREFIX "${extern_prefix}"
4474 #define EXTERN_ASM ${extern_prefix}
4475 #define SLIBSUF "$SLIBSUF"
4476 EOF
4477
4478 test -n "$malloc_prefix" &&
4479     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4480
4481 if enabled yasm; then
4482     append config_files $TMPASM
4483     printf '' >$TMPASM
4484 fi
4485
4486 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4487
4488 print_config ARCH_   "$config_files" $ARCH_LIST
4489 print_config HAVE_   "$config_files" $HAVE_LIST
4490 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4491                                      $CONFIG_EXTRA      \
4492                                      $ALL_COMPONENTS    \
4493
4494 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4495
4496 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4497 cp_if_changed $TMPH config.h
4498 touch .config
4499
4500 enabled yasm && cp_if_changed $TMPASM config.asm
4501
4502 cat > $TMPH <<EOF
4503 /* Generated by ffconf */
4504 #ifndef AVUTIL_AVCONFIG_H
4505 #define AVUTIL_AVCONFIG_H
4506 EOF
4507
4508 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4509
4510 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4511
4512 cp_if_changed $TMPH libavutil/avconfig.h
4513
4514 test -n "$WARNINGS" && printf "\n$WARNINGS"
4515
4516 # build pkg-config files
4517
4518 pkgconfig_generate(){
4519     name=$1
4520     shortname=${name#lib}${build_suffix}
4521     comment=$2
4522     version=$3
4523     libs=$4
4524     requires=$5
4525     enabled ${name#lib} || return 0
4526     mkdir -p $name
4527     cat <<EOF > $name/$name.pc
4528 prefix=$prefix
4529 exec_prefix=\${prefix}
4530 libdir=$libdir
4531 includedir=$incdir
4532
4533 Name: $name
4534 Description: $comment
4535 Version: $version
4536 Requires: $(enabled shared || echo $requires)
4537 Requires.private: $(enabled shared && echo $requires)
4538 Conflicts:
4539 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4540 Libs.private: $(enabled shared && echo $libs)
4541 Cflags: -I\${includedir}
4542 EOF
4543     cat <<EOF > $name/$name-uninstalled.pc
4544 prefix=
4545 exec_prefix=
4546 libdir=\${pcfiledir}
4547 includedir=${source_path}
4548
4549 Name: $name
4550 Description: $comment
4551 Version: $version
4552 Requires: $requires
4553 Conflicts:
4554 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4555 Cflags: -I\${includedir}
4556 EOF
4557 }
4558
4559 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4560 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4561 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4562 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4563
4564 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4565 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4566 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4567 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4568 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4569 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4570 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"