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