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