OpenEXR decoder
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105
106 Program options:
107   --disable-programs       do not build command line programs
108   --disable-avconv         disable avconv build
109   --disable-avplay         disable avplay build
110   --disable-avprobe        disable avprobe build
111   --disable-avserver       disable avserver build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-avdevice       disable libavdevice build
116   --disable-avcodec        disable libavcodec build
117   --disable-avformat       disable libavformat build
118   --disable-avutil         disable libavutil build
119   --disable-swscale        disable libswscale build
120   --disable-avfilter       disable video filter support [no]
121   --disable-avresample     disable libavresample build [no]
122   --disable-pthreads       disable pthreads [auto]
123   --disable-w32threads     disable Win32 threads [auto]
124   --disable-network        disable network support [no]
125   --disable-dct            disable DCT code
126   --disable-error-resilience disable error resilience code
127   --disable-lsp            disable LSP code
128   --disable-lzo            disable LZO decoder code
129   --disable-mdct           disable MDCT code
130   --disable-rdft           disable RDFT code
131   --disable-fft            disable FFT code
132
133 Hardware accelerators:
134   --enable-dxva2           enable DXVA2 code
135   --enable-vaapi           enable VAAPI code
136   --enable-vda             enable VDA code
137   --enable-vdpau           enable VDPAU code
138
139 Individual component options:
140   --disable-everything     disable all components listed below
141   --disable-encoder=NAME   disable encoder NAME
142   --enable-encoder=NAME    enable encoder NAME
143   --disable-encoders       disable all encoders
144   --disable-decoder=NAME   disable decoder NAME
145   --enable-decoder=NAME    enable decoder NAME
146   --disable-decoders       disable all decoders
147   --disable-hwaccel=NAME   disable hwaccel NAME
148   --enable-hwaccel=NAME    enable hwaccel NAME
149   --disable-hwaccels       disable all hwaccels
150   --disable-muxer=NAME     disable muxer NAME
151   --enable-muxer=NAME      enable muxer NAME
152   --disable-muxers         disable all muxers
153   --disable-demuxer=NAME   disable demuxer NAME
154   --enable-demuxer=NAME    enable demuxer NAME
155   --disable-demuxers       disable all demuxers
156   --enable-parser=NAME     enable parser NAME
157   --disable-parser=NAME    disable parser NAME
158   --disable-parsers        disable all parsers
159   --enable-bsf=NAME        enable bitstream filter NAME
160   --disable-bsf=NAME       disable bitstream filter NAME
161   --disable-bsfs           disable all bitstream filters
162   --enable-protocol=NAME   enable protocol NAME
163   --disable-protocol=NAME  disable protocol NAME
164   --disable-protocols      disable all protocols
165   --enable-indev=NAME      enable input device NAME
166   --disable-indev=NAME     disable input device NAME
167   --disable-indevs         disable input devices
168   --enable-outdev=NAME     enable output device NAME
169   --disable-outdev=NAME    disable output device NAME
170   --disable-outdevs        disable output devices
171   --disable-devices        disable all devices
172   --enable-filter=NAME     enable filter NAME
173   --disable-filter=NAME    disable filter NAME
174   --disable-filters        disable all filters
175
176 External library support:
177   --enable-avisynth        enable reading of AviSynth script files [no]
178   --enable-bzlib           enable bzlib [autodetect]
179   --enable-frei0r          enable frei0r video filtering
180   --enable-gnutls          enable gnutls [no]
181   --enable-libcdio         enable audio CD grabbing with libcdio
182   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
183                            and libraw1394 [no]
184   --enable-libfaac         enable AAC encoding via libfaac [no]
185   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
186   --enable-libfreetype     enable libfreetype [no]
187   --enable-libgsm          enable GSM de/encoding via libgsm [no]
188   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
189   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
190   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
191   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
192   --enable-libopencv       enable video filtering via libopencv [no]
193   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
194   --enable-libopus         enable Opus decoding via libopus [no]
195   --enable-libpulse        enable Pulseaudio input via libpulse [no]
196   --enable-librtmp         enable RTMP[E] support via librtmp [no]
197   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
198   --enable-libspeex        enable Speex de/encoding via libspeex [no]
199   --enable-libtheora       enable Theora encoding via libtheora [no]
200   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
201   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
202   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
203   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
204   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
205   --enable-libwebp         enable WebP encoding via libwebp [no]
206   --enable-libx264         enable H.264 encoding via x264 [no]
207   --enable-libx265         enable HEVC encoding via x265 [no]
208   --enable-libxavs         enable AVS encoding via xavs [no]
209   --enable-libxvid         enable Xvid encoding via xvidcore,
210                            native MPEG-4/Xvid encoder exists [no]
211   --enable-openssl         enable openssl [no]
212   --enable-x11grab         enable X11 grabbing [no]
213   --enable-zlib            enable zlib [autodetect]
214
215 Toolchain options:
216   --arch=ARCH              select architecture [$arch]
217   --cpu=CPU                select the minimum required CPU (affects
218                            instruction selection, may crash on older CPUs)
219   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
220   --enable-cross-compile   assume a cross-compiler is used
221   --sysroot=PATH           root of cross-build tree
222   --sysinclude=PATH        location of cross-build system headers
223   --target-os=OS           compiler targets OS [$target_os]
224   --target-exec=CMD        command to run executables on target
225   --target-path=DIR        path to view of build directory on target
226   --target-samples=DIR     path to samples directory on target
227   --toolchain=NAME         set tool defaults according to NAME
228   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
229   --nm=NM                  use nm tool
230   --ar=AR                  use archive tool AR [$ar_default]
231   --as=AS                  use assembler AS [$as_default]
232   --cc=CC                  use C compiler CC [$cc_default]
233   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
234   --ld=LD                  use linker LD
235   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
236   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
237   --host-cc=HOSTCC         use host C compiler HOSTCC
238   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
239   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
240   --host-ld=HOSTLD         use host linker HOSTLD
241   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
242   --host-libs=HLIBS        use libs HLIBS when linking for host
243   --host-os=OS             compiler host OS [$target_os]
244   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
245   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
246   --extra-libs=ELIBS       add ELIBS [$ELIBS]
247   --extra-version=STRING   version string suffix []
248   --optflags=OPTFLAGS      override optimization-related compiler flags
249   --build-suffix=SUFFIX    library name suffix []
250   --enable-pic             build position-independent code
251   --enable-thumb           compile for Thumb instruction set
252   --enable-lto             use link-time optimization
253
254 Advanced options (experts only):
255   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
256   --disable-symver         disable symbol versioning
257   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
258   --disable-safe-bitstream-reader
259                            disable buffer boundary checking in bitreaders
260                            (faster, but may crash)
261   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
262   --enable-sram            allow use of on-chip SRAM
263
264 Optimization options (experts only):
265   --disable-asm            disable all assembler optimizations
266   --disable-altivec        disable AltiVec optimizations
267   --disable-amd3dnow       disable 3DNow! optimizations
268   --disable-amd3dnowext    disable 3DNow! extended optimizations
269   --disable-mmx            disable MMX optimizations
270   --disable-mmxext         disable MMXEXT optimizations
271   --disable-sse            disable SSE optimizations
272   --disable-sse2           disable SSE2 optimizations
273   --disable-sse3           disable SSE3 optimizations
274   --disable-ssse3          disable SSSE3 optimizations
275   --disable-sse4           disable SSE4 optimizations
276   --disable-sse42          disable SSE4.2 optimizations
277   --disable-avx            disable AVX optimizations
278   --disable-xop            disable XOP optimizations
279   --disable-fma3           disable FMA3 optimizations
280   --disable-fma4           disable FMA4 optimizations
281   --disable-avx2           disable AVX2 optimizations
282   --disable-armv5te        disable armv5te optimizations
283   --disable-armv6          disable armv6 optimizations
284   --disable-armv6t2        disable armv6t2 optimizations
285   --disable-vfp            disable VFP optimizations
286   --disable-neon           disable NEON optimizations
287   --disable-inline-asm     disable use of inline assembler
288   --disable-yasm           disable use of yasm assembler
289
290 Developer options (useful when working on Libav itself):
291   --disable-debug          disable debugging symbols
292   --enable-debug=LEVEL     set the debug level [$debuglevel]
293   --disable-optimizations  disable compiler optimizations
294   --enable-extra-warnings  enable more compiler warnings
295   --samples=PATH           location of test samples for FATE, if not set use
296                            \$LIBAV_SAMPLES at make invocation time.
297   --enable-neon-clobber-test check NEON registers for clobbering (should be
298                            used only for debugging purposes)
299   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
300                            should be used only for debugging purposes)
301   --enable-random          randomly enable/disable components
302   --disable-random
303   --enable-random=LIST     randomly enable/disable specific components or
304   --disable-random=LIST    component groups. LIST is a comma-separated list
305                            of NAME[:PROB] entries where NAME is a component
306                            (group) and PROB the probability associated with
307                            NAME (default 0.5).
308   --random-seed=VALUE      seed value for --enable/disable-random
309
310 NOTE: Object files are built at the place where configure is launched.
311 EOF
312   exit 0
313 }
314
315 quotes='""'
316
317 log(){
318     echo "$@" >> $logfile
319 }
320
321 log_file(){
322     log BEGIN $1
323     pr -n -t $1 >> $logfile
324     log END $1
325 }
326
327 echolog(){
328     log "$@"
329     echo "$@"
330 }
331
332 warn(){
333     log "WARNING: $*"
334     WARNINGS="${WARNINGS}WARNING: $*\n"
335 }
336
337 die(){
338     echolog "$@"
339     cat <<EOF
340
341 If you think configure made a mistake, make sure you are using the latest
342 version from Git.  If the latest version fails, report the problem to the
343 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
344 EOF
345     if disabled logging; then
346         cat <<EOF
347 Rerun configure with logging enabled (do not use --disable-logging), and
348 include the log this produces with your report.
349 EOF
350     else
351         cat <<EOF
352 Include the log file "$logfile" produced by configure as this will help
353 solving the problem.
354 EOF
355     fi
356     exit 1
357 }
358
359 # Avoid locale weirdness, besides we really just want to translate ASCII.
360 toupper(){
361     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
362 }
363
364 tolower(){
365     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
366 }
367
368 c_escape(){
369     echo "$*" | sed 's/["\\]/\\\0/g'
370 }
371
372 sh_quote(){
373     v=$(echo "$1" | sed "s/'/'\\\\''/g")
374     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
375     echo "$v"
376 }
377
378 cleanws(){
379     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
380 }
381
382 filter(){
383     pat=$1
384     shift
385     for v; do
386         eval "case $v in $pat) echo $v ;; esac"
387     done
388 }
389
390 filter_out(){
391     pat=$1
392     shift
393     for v; do
394         eval "case $v in $pat) ;; *) echo $v ;; esac"
395     done
396 }
397
398 map(){
399     m=$1
400     shift
401     for v; do eval $m; done
402 }
403
404 add_suffix(){
405     suffix=$1
406     shift
407     for v; do echo ${v}${suffix}; done
408 }
409
410 set_all(){
411     value=$1
412     shift
413     for var in $*; do
414         eval $var=$value
415     done
416 }
417
418 set_weak(){
419     value=$1
420     shift
421     for var; do
422         eval : \${$var:=$value}
423     done
424 }
425
426 sanitize_var_name(){
427     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
428 }
429
430 set_safe(){
431     var=$1
432     shift
433     eval $(sanitize_var_name "$var")='$*'
434 }
435
436 get_safe(){
437     eval echo \$$(sanitize_var_name "$1")
438 }
439
440 pushvar(){
441     for pvar in $*; do
442         eval level=\${${pvar}_level:=0}
443         eval ${pvar}_${level}="\$$pvar"
444         eval ${pvar}_level=$(($level+1))
445     done
446 }
447
448 popvar(){
449     for pvar in $*; do
450         eval level=\${${pvar}_level:-0}
451         test $level = 0 && continue
452         eval level=$(($level-1))
453         eval $pvar="\${${pvar}_${level}}"
454         eval ${pvar}_level=$level
455         eval unset ${pvar}_${level}
456     done
457 }
458
459 enable(){
460     set_all yes $*
461 }
462
463 disable(){
464     set_all no $*
465 }
466
467 enable_weak(){
468     set_weak yes $*
469 }
470
471 disable_weak(){
472     set_weak no $*
473 }
474
475 enable_safe(){
476     for var; do
477         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
478     done
479 }
480
481 disable_safe(){
482     for var; do
483         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
484     done
485 }
486
487 do_enable_deep(){
488     for var; do
489         enabled $var && continue
490         eval sel="\$${var}_select"
491         eval sgs="\$${var}_suggest"
492         pushvar var sgs
493         enable_deep $sel
494         popvar sgs
495         enable_deep_weak $sgs
496         popvar var
497     done
498 }
499
500 enable_deep(){
501     do_enable_deep $*
502     enable $*
503 }
504
505 enable_deep_weak(){
506     for var; do
507         disabled $var && continue
508         pushvar var
509         do_enable_deep $var
510         popvar var
511         enable_weak $var
512     done
513 }
514
515 enabled(){
516     test "${1#!}" = "$1" && op== || op=!=
517     eval test "x\$${1#!}" $op "xyes"
518 }
519
520 disabled(){
521     test "${1#!}" = "$1" && op== || op=!=
522     eval test "x\$${1#!}" $op "xno"
523 }
524
525 enabled_all(){
526     for opt; do
527         enabled $opt || return 1
528     done
529 }
530
531 disabled_all(){
532     for opt; do
533         disabled $opt || return 1
534     done
535 }
536
537 enabled_any(){
538     for opt; do
539         enabled $opt && return 0
540     done
541 }
542
543 disabled_any(){
544     for opt; do
545         disabled $opt && return 0
546     done
547     return 1
548 }
549
550 set_default(){
551     for opt; do
552         eval : \${$opt:=\$${opt}_default}
553     done
554 }
555
556 is_in(){
557     value=$1
558     shift
559     for var in $*; do
560         [ $var = $value ] && return 0
561     done
562     return 1
563 }
564
565 do_check_deps(){
566     for cfg; do
567         cfg="${cfg#!}"
568         enabled ${cfg}_checking && die "Circular dependency for $cfg."
569         disabled ${cfg}_checking && continue
570         enable ${cfg}_checking
571         append allopts $cfg
572
573         eval dep_all="\$${cfg}_deps"
574         eval dep_any="\$${cfg}_deps_any"
575         eval dep_sel="\$${cfg}_select"
576         eval dep_sgs="\$${cfg}_suggest"
577         eval dep_ifa="\$${cfg}_if"
578         eval dep_ifn="\$${cfg}_if_any"
579
580         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
581         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
582         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
583
584         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
585         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
586         enabled_all  $dep_all || disable $cfg
587         enabled_any  $dep_any || disable $cfg
588         disabled_any $dep_sel && disable $cfg
589
590         if enabled $cfg; then
591             enable_deep $dep_sel
592             enable_deep_weak $dep_sgs
593         fi
594
595         disable ${cfg}_checking
596     done
597 }
598
599 check_deps(){
600     unset allopts
601
602     do_check_deps "$@"
603
604     for cfg in $allopts; do
605         enabled $cfg || continue
606         eval dep_extralibs="\$${cfg}_extralibs"
607         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
608     done
609 }
610
611 print_config(){
612     pfx=$1
613     files=$2
614     shift 2
615     map 'eval echo "$v \${$v:-no}"' "$@" |
616     awk "BEGIN { split(\"$files\", files) }
617         {
618             c = \"$pfx\" toupper(\$1);
619             v = \$2;
620             sub(/yes/, 1, v);
621             sub(/no/,  0, v);
622             for (f in files) {
623                 file = files[f];
624                 if (file ~ /\\.h\$/) {
625                     printf(\"#define %s %d\\n\", c, v) >>file;
626                 } else if (file ~ /\\.asm\$/) {
627                     printf(\"%%define %s %d\\n\", c, v) >>file;
628                 } else if (file ~ /\\.mak\$/) {
629                     n = -v ? \"\" : \"!\";
630                     printf(\"%s%s=yes\\n\", n, c) >>file;
631                 }
632             }
633         }"
634 }
635
636 print_enabled(){
637     suf=$1
638     shift
639     for v; do
640         enabled $v && printf "%s\n" ${v%$suf};
641     done
642 }
643
644 append(){
645     var=$1
646     shift
647     eval "$var=\"\$$var $*\""
648 }
649
650 prepend(){
651     var=$1
652     shift
653     eval "$var=\"$* \$$var\""
654 }
655
656 add_cppflags(){
657     append CPPFLAGS "$@"
658 }
659
660 add_cflags(){
661     append CFLAGS $($cflags_filter "$@")
662 }
663
664 add_asflags(){
665     append ASFLAGS $($asflags_filter "$@")
666 }
667
668 add_ldflags(){
669     append LDFLAGS $($ldflags_filter "$@")
670 }
671
672 add_stripflags(){
673     append STRIPFLAGS "$@"
674 }
675
676 add_extralibs(){
677     prepend extralibs $($ldflags_filter "$@")
678 }
679
680 add_host_cppflags(){
681     append host_cppflags "$@"
682 }
683
684 add_host_cflags(){
685     append host_cflags $($host_cflags_filter "$@")
686 }
687
688 add_host_ldflags(){
689     append host_ldflags $($host_ldflags_filter "$@")
690 }
691
692 add_compat(){
693     append compat_objs $1
694     shift
695     map 'add_cppflags -D$v' "$@"
696 }
697
698 check_cmd(){
699     log "$@"
700     "$@" >> $logfile 2>&1
701 }
702
703 cc_o(){
704     eval printf '%s\\n' $CC_O
705 }
706
707 cc_e(){
708     eval printf '%s\\n' $CC_E
709 }
710
711 check_cc(){
712     log check_cc "$@"
713     cat > $TMPC
714     log_file $TMPC
715     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
716 }
717
718 check_cpp(){
719     log check_cpp "$@"
720     cat > $TMPC
721     log_file $TMPC
722     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
723 }
724
725 as_o(){
726     eval printf '%s\\n' $AS_O
727 }
728
729 check_as(){
730     log check_as "$@"
731     cat > $TMPS
732     log_file $TMPS
733     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
734 }
735
736 check_inline_asm(){
737     log check_inline_asm "$@"
738     name="$1"
739     code="$2"
740     shift 2
741     disable $name
742     check_cc "$@" <<EOF && enable $name
743 void foo(void){ __asm__ volatile($code); }
744 EOF
745 }
746
747 check_insn(){
748     log check_insn "$@"
749     check_inline_asm ${1}_inline "\"$2\""
750     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
751 }
752
753 check_yasm(){
754     log check_yasm "$@"
755     echo "$1" > $TMPS
756     log_file $TMPS
757     shift 1
758     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
759 }
760
761 ld_o(){
762     eval printf '%s\\n' $LD_O
763 }
764
765 check_ld(){
766     log check_ld "$@"
767     flags=$(filter_out '-l*' "$@")
768     libs=$(filter '-l*' "$@")
769     check_cc $($cflags_filter $flags) || return
770     flags=$($ldflags_filter $flags)
771     libs=$($ldflags_filter $libs)
772     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
773 }
774
775 print_include(){
776     hdr=$1
777     test "${hdr%.h}" = "${hdr}" &&
778         echo "#include $hdr"    ||
779         echo "#include <$hdr>"
780 }
781
782 check_code(){
783     log check_code "$@"
784     check=$1
785     headers=$2
786     code=$3
787     shift 3
788     {
789         for hdr in $headers; do
790             print_include $hdr
791         done
792         echo "int main(void) { $code; return 0; }"
793     } | check_$check "$@"
794 }
795
796 check_cppflags(){
797     log check_cppflags "$@"
798     check_cc "$@" <<EOF && append CPPFLAGS "$@"
799 int x;
800 EOF
801 }
802
803 test_cflags(){
804     log test_cflags "$@"
805     set -- $($cflags_filter "$@")
806     check_cc "$@" <<EOF
807 int x;
808 EOF
809 }
810
811 check_cflags(){
812     log check_cflags "$@"
813     test_cflags "$@" && add_cflags "$@"
814 }
815
816 test_ldflags(){
817     log test_ldflags "$@"
818     check_ld "$@" <<EOF
819 int main(void){ return 0; }
820 EOF
821 }
822
823 check_ldflags(){
824     log check_ldflags "$@"
825     test_ldflags "$@" && add_ldflags "$@"
826 }
827
828 test_stripflags(){
829     log test_stripflags "$@"
830     # call check_cc to get a fresh TMPO
831     check_cc <<EOF
832 int main(void) { return 0; }
833 EOF
834     check_cmd $strip $STRIPFLAGS "$@" $TMPO
835 }
836
837 check_stripflags(){
838     log check_stripflags "$@"
839     test_stripflags "$@" && add_stripflags "$@"
840 }
841
842 check_header(){
843     log check_header "$@"
844     header=$1
845     shift
846     disable_safe $header
847     check_cpp "$@" <<EOF && enable_safe $header
848 #include <$header>
849 int x;
850 EOF
851 }
852
853 check_func(){
854     log check_func "$@"
855     func=$1
856     shift
857     disable $func
858     check_ld "$@" <<EOF && enable $func
859 extern int $func();
860 int main(void){ $func(); }
861 EOF
862 }
863
864 check_mathfunc(){
865     log check_mathfunc "$@"
866     func=$1
867     narg=$2
868     shift 2
869     test $narg = 2 && args="f, g" || args="f"
870     disable $func
871     check_ld "$@" <<EOF && enable $func
872 #include <math.h>
873 float foo(float f, float g) { return $func($args); }
874 int main(void){ return 0; }
875 EOF
876 }
877
878 check_func_headers(){
879     log check_func_headers "$@"
880     headers=$1
881     funcs=$2
882     shift 2
883     {
884         for hdr in $headers; do
885             print_include $hdr
886         done
887         for func in $funcs; do
888             echo "long check_$func(void) { return (long) $func; }"
889         done
890         echo "int main(void) { return 0; }"
891     } | check_ld "$@" && enable $funcs && enable_safe $headers
892 }
893
894 check_cpp_condition(){
895     log check_cpp_condition "$@"
896     header=$1
897     condition=$2
898     shift 2
899     check_cpp "$@" <<EOF
900 #include <$header>
901 #if !($condition)
902 #error "unsatisfied condition: $condition"
903 #endif
904 EOF
905 }
906
907 check_lib(){
908     log check_lib "$@"
909     header="$1"
910     func="$2"
911     shift 2
912     check_header $header && check_func $func "$@" && add_extralibs "$@"
913 }
914
915 check_lib2(){
916     log check_lib2 "$@"
917     headers="$1"
918     funcs="$2"
919     shift 2
920     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
921 }
922
923 check_pkg_config(){
924     log check_pkg_config "$@"
925     pkg="$1"
926     headers="$2"
927     funcs="$3"
928     shift 3
929     check_cmd $pkg_config --exists --print-errors $pkg || return
930     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
931     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
932     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
933         set_safe ${pkg}_cflags $pkg_cflags   &&
934         set_safe ${pkg}_libs   $pkg_libs
935 }
936
937 check_exec(){
938     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
939 }
940
941 check_exec_crash(){
942     code=$(cat)
943
944     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
945     # are safe but may not be available everywhere.  Thus we use
946     # raise(SIGTERM) instead.  The check is run in a subshell so we
947     # can redirect the "Terminated" message from the shell.  SIGBUS
948     # is not defined by standard C so it is used conditionally.
949
950     (check_exec "$@") >> $logfile 2>&1 <<EOF
951 #include <signal.h>
952 static void sighandler(int sig){
953     raise(SIGTERM);
954 }
955 int foo(void){
956     $code
957 }
958 int (*func_ptr)(void) = foo;
959 int main(void){
960     signal(SIGILL, sighandler);
961     signal(SIGFPE, sighandler);
962     signal(SIGSEGV, sighandler);
963 #ifdef SIGBUS
964     signal(SIGBUS, sighandler);
965 #endif
966     return func_ptr();
967 }
968 EOF
969 }
970
971 check_type(){
972     log check_type "$@"
973     headers=$1
974     type=$2
975     shift 2
976     disable_safe "$type"
977     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
978 }
979
980 check_struct(){
981     log check_struct "$@"
982     headers=$1
983     struct=$2
984     member=$3
985     shift 3
986     disable_safe "${struct}_${member}"
987     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
988         enable_safe "${struct}_${member}"
989 }
990
991 check_builtin(){
992     log check_builtin "$@"
993     name=$1
994     headers=$2
995     builtin=$3
996     shift 3
997     disable "$name"
998     check_code ld "$headers" "$builtin" "$@" && enable "$name"
999 }
1000
1001 check_compile_assert(){
1002     log check_compile_assert "$@"
1003     name=$1
1004     headers=$2
1005     condition=$3
1006     shift 3
1007     disable "$name"
1008     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1009 }
1010
1011 require(){
1012     name="$1"
1013     header="$2"
1014     func="$3"
1015     shift 3
1016     check_lib $header $func "$@" || die "ERROR: $name not found"
1017 }
1018
1019 require2(){
1020     name="$1"
1021     headers="$2"
1022     func="$3"
1023     shift 3
1024     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1025 }
1026
1027 require_pkg_config(){
1028     pkg="$1"
1029     check_pkg_config "$@" || die "ERROR: $pkg not found"
1030     add_cflags    $(get_safe ${pkg}_cflags)
1031     add_extralibs $(get_safe ${pkg}_libs)
1032 }
1033
1034 hostcc_e(){
1035     eval printf '%s\\n' $HOSTCC_E
1036 }
1037
1038 hostcc_o(){
1039     eval printf '%s\\n' $HOSTCC_O
1040 }
1041
1042 check_host_cc(){
1043     log check_host_cc "$@"
1044     cat > $TMPC
1045     log_file $TMPC
1046     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1047 }
1048
1049 check_host_cpp(){
1050     log check_host_cpp "$@"
1051     cat > $TMPC
1052     log_file $TMPC
1053     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1054 }
1055
1056 check_host_cppflags(){
1057     log check_host_cppflags "$@"
1058     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1059 int x;
1060 EOF
1061 }
1062
1063 check_host_cflags(){
1064     log check_host_cflags "$@"
1065     set -- $($host_cflags_filter "$@")
1066     check_host_cc "$@" <<EOF && append host_cflags "$@"
1067 int x;
1068 EOF
1069 }
1070
1071 check_host_cpp_condition(){
1072     log check_host_cpp_condition "$@"
1073     header=$1
1074     condition=$2
1075     shift 2
1076     check_host_cpp "$@" <<EOF
1077 #include <$header>
1078 #if !($condition)
1079 #error "unsatisfied condition: $condition"
1080 #endif
1081 EOF
1082 }
1083
1084 apply(){
1085     file=$1
1086     shift
1087     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1088 }
1089
1090 cp_if_changed(){
1091     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1092     mkdir -p "$(dirname $2)"
1093     $cp_f "$1" "$2"
1094 }
1095
1096 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1097 # system-dependent things.
1098
1099 COMPONENT_LIST="
1100     bsfs
1101     decoders
1102     demuxers
1103     encoders
1104     filters
1105     hwaccels
1106     indevs
1107     muxers
1108     outdevs
1109     parsers
1110     protocols
1111 "
1112
1113 EXAMPLE_LIST="
1114     avcodec_example
1115     filter_audio_example
1116     metadata_example
1117     output_example
1118     transcode_aac_example
1119 "
1120
1121 EXTERNAL_LIBRARY_LIST="
1122     avisynth
1123     bzlib
1124     frei0r
1125     gnutls
1126     libcdio
1127     libdc1394
1128     libfaac
1129     libfdk_aac
1130     libfreetype
1131     libgsm
1132     libilbc
1133     libmp3lame
1134     libopencore_amrnb
1135     libopencore_amrwb
1136     libopencv
1137     libopenjpeg
1138     libopus
1139     libpulse
1140     librtmp
1141     libschroedinger
1142     libspeex
1143     libtheora
1144     libvo_aacenc
1145     libvo_amrwbenc
1146     libvorbis
1147     libvpx
1148     libwavpack
1149     libwebp
1150     libx264
1151     libx265
1152     libxavs
1153     libxvid
1154     openssl
1155     x11grab
1156     zlib
1157 "
1158
1159 FEATURE_LIST="
1160     gray
1161     hardcoded_tables
1162     runtime_cpudetect
1163     safe_bitstream_reader
1164     shared
1165     small
1166     sram
1167     static
1168     swscale_alpha
1169 "
1170
1171 HWACCEL_LIST="
1172     dxva2
1173     vaapi
1174     vda
1175     vdpau
1176 "
1177
1178 LIBRARY_LIST="
1179     avcodec
1180     avdevice
1181     avfilter
1182     avformat
1183     avresample
1184     avutil
1185     swscale
1186 "
1187
1188 LICENSE_LIST="
1189     gpl
1190     nonfree
1191     version3
1192 "
1193
1194 PROGRAM_LIST="
1195     avconv
1196     avplay
1197     avprobe
1198     avserver
1199 "
1200
1201 SUBSYSTEM_LIST="
1202     dct
1203     doc
1204     error_resilience
1205     fft
1206     lsp
1207     lzo
1208     mdct
1209     network
1210     rdft
1211 "
1212
1213 CONFIG_LIST="
1214     $COMPONENT_LIST
1215     $EXAMPLE_LIST
1216     $EXTERNAL_LIBRARY_LIST
1217     $FEATURE_LIST
1218     $HWACCEL_LIST
1219     $LICENSE_LIST
1220     $LIBRARY_LIST
1221     $PROGRAM_LIST
1222     $SUBSYSTEM_LIST
1223     memalign_hack
1224     neon_clobber_test
1225     pic
1226     pod2man
1227     texi2html
1228     thumb
1229     xmm_clobber_test
1230 "
1231
1232 THREADS_LIST="
1233     pthreads
1234     w32threads
1235 "
1236
1237 ATOMICS_LIST="
1238     atomics_gcc
1239     atomics_suncc
1240     atomics_win32
1241 "
1242
1243 ARCH_LIST="
1244     aarch64
1245     alpha
1246     arm
1247     avr32
1248     avr32_ap
1249     avr32_uc
1250     bfin
1251     ia64
1252     m68k
1253     mips
1254     mips64
1255     parisc
1256     ppc
1257     ppc64
1258     s390
1259     sh4
1260     sparc
1261     sparc64
1262     tilegx
1263     tilepro
1264     tomi
1265     x86
1266     x86_32
1267     x86_64
1268 "
1269
1270 ARCH_EXT_LIST_ARM="
1271     armv5te
1272     armv6
1273     armv6t2
1274     neon
1275     vfp
1276     vfpv3
1277 "
1278
1279 ARCH_EXT_LIST_X86_SIMD="
1280     amd3dnow
1281     amd3dnowext
1282     avx
1283     avx2
1284     fma3
1285     fma4
1286     mmx
1287     mmxext
1288     sse
1289     sse2
1290     sse3
1291     sse4
1292     sse42
1293     ssse3
1294     xop
1295 "
1296
1297 ARCH_EXT_LIST_PPC="
1298     altivec
1299     dcbzl
1300     ldbrx
1301     ppc4xx
1302 "
1303
1304 ARCH_EXT_LIST_X86="
1305     $ARCH_EXT_LIST_X86_SIMD
1306     cpunop
1307     i686
1308 "
1309
1310 ARCH_EXT_LIST="
1311     $ARCH_EXT_LIST_ARM
1312     $ARCH_EXT_LIST_PPC
1313     $ARCH_EXT_LIST_X86
1314     loongson
1315     vis
1316 "
1317
1318 ARCH_FEATURES="
1319     aligned_stack
1320     fast_64bit
1321     fast_clz
1322     fast_cmov
1323     local_aligned_8
1324     local_aligned_16
1325 "
1326
1327 BUILTIN_LIST="
1328     atomic_cas_ptr
1329     machine_rw_barrier
1330     MemoryBarrier
1331     mm_empty
1332     rdtsc
1333     sync_val_compare_and_swap
1334 "
1335 HAVE_LIST_CMDLINE="
1336     inline_asm
1337     symver
1338     yasm
1339 "
1340
1341 HAVE_LIST_PUB="
1342     bigendian
1343     fast_unaligned
1344 "
1345
1346 HEADERS_LIST="
1347     alsa_asoundlib_h
1348     altivec_h
1349     arpa_inet_h
1350     cdio_paranoia_h
1351     cdio_paranoia_paranoia_h
1352     dev_bktr_ioctl_bt848_h
1353     dev_bktr_ioctl_meteor_h
1354     dev_ic_bt8xx_h
1355     dev_video_bktr_ioctl_bt848_h
1356     dev_video_meteor_ioctl_meteor_h
1357     direct_h
1358     dlfcn_h
1359     dxva_h
1360     gsm_h
1361     io_h
1362     mach_mach_time_h
1363     machine_ioctl_bt848_h
1364     machine_ioctl_meteor_h
1365     malloc_h
1366     poll_h
1367     sndio_h
1368     soundcard_h
1369     sys_mman_h
1370     sys_param_h
1371     sys_resource_h
1372     sys_select_h
1373     sys_soundcard_h
1374     sys_time_h
1375     sys_un_h
1376     sys_videoio_h
1377     unistd_h
1378     windows_h
1379     winsock2_h
1380 "
1381
1382 MATH_FUNCS="
1383     atanf
1384     atan2f
1385     cbrtf
1386     cosf
1387     exp2
1388     exp2f
1389     expf
1390     isinf
1391     isnan
1392     ldexpf
1393     llrint
1394     llrintf
1395     log2
1396     log2f
1397     log10f
1398     lrint
1399     lrintf
1400     powf
1401     rint
1402     round
1403     roundf
1404     sinf
1405     trunc
1406     truncf
1407 "
1408
1409 SYSTEM_FUNCS="
1410     aligned_malloc
1411     closesocket
1412     CommandLineToArgvW
1413     CryptGenRandom
1414     dlopen
1415     fcntl
1416     flt_lim
1417     fork
1418     getaddrinfo
1419     gethrtime
1420     getopt
1421     GetProcessAffinityMask
1422     GetProcessMemoryInfo
1423     GetProcessTimes
1424     getrusage
1425     getservbyport
1426     GetSystemTimeAsFileTime
1427     gettimeofday
1428     inet_aton
1429     isatty
1430     jack_port_get_latency_range
1431     localtime_r
1432     mach_absolute_time
1433     MapViewOfFile
1434     memalign
1435     mkstemp
1436     mmap
1437     mprotect
1438     nanosleep
1439     posix_memalign
1440     sched_getaffinity
1441     SetConsoleTextAttribute
1442     setmode
1443     setrlimit
1444     Sleep
1445     strerror_r
1446     strptime
1447     sysconf
1448     sysctl
1449     usleep
1450     VirtualAlloc
1451 "
1452
1453 TOOLCHAIN_FEATURES="
1454     asm_mod_q
1455     attribute_may_alias
1456     attribute_packed
1457     ebp_available
1458     ebx_available
1459     gnu_as
1460     ibm_asm
1461     inline_asm_labels
1462     pragma_deprecated
1463     symver_asm_label
1464     symver_gnu_asm
1465     vfp_args
1466     xform_asm
1467     xmm_clobbers
1468 "
1469
1470 TYPES_LIST="
1471     socklen_t
1472     struct_addrinfo
1473     struct_group_source_req
1474     struct_ip_mreq_source
1475     struct_ipv6_mreq
1476     struct_pollfd
1477     struct_rusage_ru_maxrss
1478     struct_sockaddr_in6
1479     struct_sockaddr_sa_len
1480     struct_sockaddr_storage
1481     struct_v4l2_frmivalenum_discrete
1482 "
1483
1484 HAVE_LIST="
1485     $ARCH_EXT_LIST
1486     $(add_suffix _external $ARCH_EXT_LIST)
1487     $(add_suffix _inline   $ARCH_EXT_LIST)
1488     $ARCH_FEATURES
1489     $ATOMICS_LIST
1490     $BUILTIN_LIST
1491     $HAVE_LIST_CMDLINE
1492     $HAVE_LIST_PUB
1493     $HEADERS_LIST
1494     $MATH_FUNCS
1495     $SYSTEM_FUNCS
1496     $THREADS_LIST
1497     $TOOLCHAIN_FEATURES
1498     $TYPES_LIST
1499     atomics_native
1500     dos_paths
1501     libc_msvcrt
1502     libdc1394_1
1503     libdc1394_2
1504     sdl
1505     threads
1506     vdpau_x11
1507     xlib
1508 "
1509
1510 # options emitted with CONFIG_ prefix but not available on the command line
1511 CONFIG_EXTRA="
1512     aandcttables
1513     ac3dsp
1514     audio_frame_queue
1515     cabac
1516     dsputil
1517     gcrypt
1518     golomb
1519     gplv3
1520     h263dsp
1521     h264chroma
1522     h264dsp
1523     h264pred
1524     h264qpel
1525     hpeldsp
1526     huffman
1527     intrax8
1528     lgplv3
1529     lpc
1530     mpegaudio
1531     mpegaudiodsp
1532     mpegvideo
1533     mpegvideoenc
1534     nettle
1535     rangecoder
1536     riffdec
1537     riffenc
1538     rtpdec
1539     rtpenc_chain
1540     sinewin
1541     tpeldsp
1542     videodsp
1543     vp3dsp
1544 "
1545
1546 CMDLINE_SELECT="
1547     $ARCH_EXT_LIST
1548     $CONFIG_LIST
1549     $HAVE_LIST_CMDLINE
1550     $THREADS_LIST
1551     asm
1552     cross_compile
1553     debug
1554     extra_warnings
1555     logging
1556     lto
1557     optimizations
1558 "
1559
1560 PATHS_LIST="
1561     bindir
1562     datadir
1563     docdir
1564     incdir
1565     libdir
1566     mandir
1567     prefix
1568     shlibdir
1569 "
1570
1571 CMDLINE_SET="
1572     $PATHS_LIST
1573     ar
1574     arch
1575     as
1576     build_suffix
1577     cc
1578     cpu
1579     cross_prefix
1580     dep_cc
1581     extra_version
1582     host_cc
1583     host_cflags
1584     host_ld
1585     host_ldflags
1586     host_libs
1587     host_os
1588     ld
1589     logfile
1590     malloc_prefix
1591     nm
1592     optflags
1593     pkg_config
1594     pkg_config_flags
1595     random_seed
1596     samples
1597     sysinclude
1598     sysroot
1599     target_exec
1600     target_os
1601     target_path
1602     target_samples
1603     toolchain
1604 "
1605
1606 CMDLINE_APPEND="
1607     extra_cflags
1608     host_cppflags
1609 "
1610
1611 # code dependency declarations
1612
1613 # architecture extensions
1614
1615 armv5te_deps="arm"
1616 armv6_deps="arm"
1617 armv6t2_deps="arm"
1618 neon_deps_any="aarch64 arm"
1619 vfp_deps_any="aarch64 arm"
1620 vfpv3_deps="vfp"
1621
1622 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1623
1624 altivec_deps="ppc"
1625 ppc4xx_deps="ppc"
1626
1627 cpunop_deps="i686"
1628 x86_64_select="i686"
1629 x86_64_suggest="fast_cmov"
1630
1631 amd3dnow_deps="mmx"
1632 amd3dnowext_deps="amd3dnow"
1633 i686_deps="x86"
1634 mmx_deps="x86"
1635 mmxext_deps="mmx"
1636 sse_deps="mmxext"
1637 sse2_deps="sse"
1638 sse3_deps="sse2"
1639 ssse3_deps="sse3"
1640 sse4_deps="ssse3"
1641 sse42_deps="sse4"
1642 avx_deps="sse42"
1643 xop_deps="avx"
1644 fma3_deps="avx"
1645 fma4_deps="avx"
1646 avx2_deps="avx"
1647
1648 mmx_external_deps="yasm"
1649 mmx_inline_deps="inline_asm"
1650 mmx_suggest="mmx_external mmx_inline"
1651
1652 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1653     eval dep=\$${ext}_deps
1654     eval ${ext}_external_deps='"${dep}_external"'
1655     eval ${ext}_inline_deps='"${dep}_inline"'
1656     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1657 done
1658
1659 aligned_stack_if_any="aarch64 ppc x86"
1660 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1661 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1662 fast_unaligned_if_any="aarch64 ppc x86"
1663
1664 need_memalign="altivec neon sse"
1665
1666 # system capabilities
1667 log2_deps="!libc_msvcrt"
1668
1669 symver_if_any="symver_asm_label symver_gnu_asm"
1670
1671 # threading support
1672 atomics_gcc_if="sync_val_compare_and_swap"
1673 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1674 atomics_win32_if="MemoryBarrier"
1675 atomics_native_if_any="$ATOMICS_LIST"
1676 w32threads_deps="atomics_native"
1677 threads_if_any="$THREADS_LIST"
1678
1679 # subsystems
1680 dct_select="rdft"
1681 error_resilience_select="dsputil"
1682 mdct_select="fft"
1683 rdft_select="fft"
1684 mpegaudio_select="mpegaudiodsp"
1685 mpegaudiodsp_select="dct"
1686 mpegvideo_select="dsputil hpeldsp videodsp"
1687 mpegvideoenc_select="dsputil mpegvideo"
1688
1689 # decoders / encoders
1690 aac_decoder_select="mdct sinewin"
1691 aac_encoder_select="audio_frame_queue mdct sinewin"
1692 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1693 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1694 ac3_encoder_select="mdct ac3dsp dsputil"
1695 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1696 aic_decoder_select="dsputil golomb"
1697 alac_encoder_select="lpc"
1698 als_decoder_select="dsputil"
1699 amrnb_decoder_select="lsp"
1700 amrwb_decoder_select="lsp"
1701 amv_decoder_select="sp5x_decoder"
1702 ape_decoder_select="dsputil"
1703 asv1_decoder_select="dsputil"
1704 asv1_encoder_select="dsputil"
1705 asv2_decoder_select="dsputil"
1706 asv2_encoder_select="dsputil"
1707 atrac1_decoder_select="mdct sinewin"
1708 atrac3_decoder_select="mdct"
1709 atrac3p_decoder_select="mdct sinewin"
1710 bink_decoder_select="dsputil hpeldsp"
1711 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1712 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1713 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1714 cllc_decoder_select="dsputil"
1715 comfortnoise_encoder_select="lpc"
1716 cook_decoder_select="dsputil mdct sinewin"
1717 cscd_decoder_select="lzo"
1718 cscd_decoder_suggest="zlib"
1719 dca_decoder_select="mdct"
1720 dnxhd_decoder_select="dsputil"
1721 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1722 dvvideo_decoder_select="dsputil"
1723 dvvideo_encoder_select="dsputil"
1724 dxa_decoder_deps="zlib"
1725 eac3_decoder_select="ac3_decoder"
1726 eac3_encoder_select="ac3_encoder"
1727 eamad_decoder_select="aandcttables dsputil mpegvideo"
1728 eatgq_decoder_select="aandcttables dsputil"
1729 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
1730 exr_decoder_deps="zlib"
1731 ffv1_decoder_select="golomb rangecoder"
1732 ffv1_encoder_select="rangecoder"
1733 ffvhuff_decoder_select="huffyuv_decoder"
1734 ffvhuff_encoder_select="huffyuv_encoder"
1735 fic_decoder_select="dsputil golomb"
1736 flac_decoder_select="golomb"
1737 flac_encoder_select="dsputil golomb lpc"
1738 flashsv_decoder_deps="zlib"
1739 flashsv_encoder_deps="zlib"
1740 flashsv2_decoder_deps="zlib"
1741 flv_decoder_select="h263_decoder"
1742 flv_encoder_select="h263_encoder"
1743 fourxm_decoder_select="dsputil"
1744 fraps_decoder_select="dsputil huffman"
1745 g2m_decoder_deps="zlib"
1746 g2m_decoder_select="dsputil"
1747 h261_decoder_select="error_resilience mpegvideo"
1748 h261_encoder_select="aandcttables mpegvideoenc"
1749 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1750 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1751 h263i_decoder_select="h263_decoder"
1752 h263p_encoder_select="h263_encoder"
1753 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1754 h264_decoder_suggest="error_resilience"
1755 hevc_decoder_select="cabac dsputil golomb videodsp"
1756 huffyuv_decoder_select="dsputil"
1757 huffyuv_encoder_select="dsputil huffman"
1758 iac_decoder_select="imc_decoder"
1759 imc_decoder_select="dsputil fft mdct sinewin"
1760 indeo3_decoder_select="hpeldsp"
1761 interplay_video_decoder_select="hpeldsp"
1762 jpegls_decoder_select="golomb mjpeg_decoder"
1763 jpegls_encoder_select="golomb"
1764 jv_decoder_select="dsputil"
1765 lagarith_decoder_select="dsputil"
1766 ljpeg_encoder_select="aandcttables mpegvideoenc"
1767 loco_decoder_select="golomb"
1768 mdec_decoder_select="dsputil error_resilience mpegvideo"
1769 metasound_decoder_select="lsp mdct sinewin"
1770 mimic_decoder_select="dsputil hpeldsp"
1771 mjpeg_decoder_select="dsputil hpeldsp"
1772 mjpeg_encoder_select="aandcttables mpegvideoenc"
1773 mjpegb_decoder_select="mjpeg_decoder"
1774 mlp_decoder_select="mlp_parser"
1775 motionpixels_decoder_select="dsputil"
1776 mp1_decoder_select="mpegaudio"
1777 mp1float_decoder_select="mpegaudio"
1778 mp2_decoder_select="mpegaudio"
1779 mp2float_decoder_select="mpegaudio"
1780 mp3_decoder_select="mpegaudio"
1781 mp3adu_decoder_select="mpegaudio"
1782 mp3adufloat_decoder_select="mpegaudio"
1783 mp3float_decoder_select="mpegaudio"
1784 mp3on4_decoder_select="mpegaudio"
1785 mp3on4float_decoder_select="mpegaudio"
1786 mpc7_decoder_select="dsputil mpegaudiodsp"
1787 mpc8_decoder_select="mpegaudiodsp"
1788 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1789 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1790 mpeg1video_decoder_select="error_resilience mpegvideo"
1791 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1792 mpeg2video_decoder_select="error_resilience mpegvideo"
1793 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1794 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1795 mpeg4_encoder_select="h263_encoder"
1796 msmpeg4v1_decoder_select="h263_decoder"
1797 msmpeg4v2_decoder_select="h263_decoder"
1798 msmpeg4v2_encoder_select="h263_encoder"
1799 msmpeg4v3_decoder_select="h263_decoder"
1800 msmpeg4v3_encoder_select="h263_encoder"
1801 mss2_decoder_select="error_resilience vc1_decoder"
1802 mxpeg_decoder_select="mjpeg_decoder"
1803 nellymoser_decoder_select="mdct sinewin"
1804 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1805 nuv_decoder_select="dsputil lzo"
1806 png_decoder_deps="zlib"
1807 png_encoder_deps="zlib"
1808 png_encoder_select="dsputil"
1809 prores_decoder_select="dsputil"
1810 prores_encoder_select="dsputil"
1811 qcelp_decoder_select="lsp"
1812 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1813 ra_144_encoder_select="audio_frame_queue lpc"
1814 ralf_decoder_select="golomb"
1815 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1816 rv10_encoder_select="h263_encoder"
1817 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1818 rv20_encoder_select="h263_encoder"
1819 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1820 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1821 shorten_decoder_select="golomb"
1822 sipr_decoder_select="lsp"
1823 sp5x_decoder_select="mjpeg_decoder"
1824 svq1_decoder_select="hpeldsp"
1825 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1826 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1827 svq3_decoder_suggest="zlib"
1828 tak_decoder_select="dsputil"
1829 theora_decoder_select="vp3_decoder"
1830 thp_decoder_select="mjpeg_decoder"
1831 tiff_decoder_suggest="zlib"
1832 tiff_encoder_suggest="zlib"
1833 truehd_decoder_select="mlp_decoder"
1834 truemotion2_decoder_select="dsputil"
1835 truespeech_decoder_select="dsputil"
1836 tscc_decoder_deps="zlib"
1837 twinvq_decoder_select="mdct lsp sinewin"
1838 utvideo_decoder_select="dsputil"
1839 utvideo_encoder_select="dsputil huffman"
1840 vble_decoder_select="dsputil"
1841 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1842 vc1image_decoder_select="vc1_decoder"
1843 vorbis_decoder_select="mdct"
1844 vorbis_encoder_select="mdct"
1845 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1846 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1847 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1848 vp6a_decoder_select="vp6_decoder"
1849 vp6f_decoder_select="vp6_decoder"
1850 vp8_decoder_select="h264pred videodsp"
1851 vp9_decoder_select="videodsp"
1852 webp_decoder_select="vp8_decoder"
1853 wmapro_decoder_select="mdct sinewin"
1854 wmav1_decoder_select="mdct sinewin"
1855 wmav1_encoder_select="mdct sinewin"
1856 wmav2_decoder_select="mdct sinewin"
1857 wmav2_encoder_select="mdct sinewin"
1858 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1859 wmv1_decoder_select="h263_decoder"
1860 wmv1_encoder_select="h263_encoder"
1861 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1862 wmv2_encoder_select="h263_encoder"
1863 wmv3_decoder_select="vc1_decoder"
1864 wmv3image_decoder_select="wmv3_decoder"
1865 zerocodec_decoder_deps="zlib"
1866 zlib_decoder_deps="zlib"
1867 zlib_encoder_deps="zlib"
1868 zmbv_decoder_deps="zlib"
1869 zmbv_encoder_deps="zlib"
1870
1871 # hardware accelerators
1872 dxva2_deps="dxva2api_h"
1873 vaapi_deps="va_va_h"
1874 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1875 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1876 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1877
1878 h263_vaapi_hwaccel_deps="vaapi"
1879 h263_vaapi_hwaccel_select="h263_decoder"
1880 h263_vdpau_hwaccel_deps="vdpau"
1881 h263_vdpau_hwaccel_select="h263_decoder"
1882 h264_dxva2_hwaccel_deps="dxva2"
1883 h264_dxva2_hwaccel_select="h264_decoder"
1884 h264_vaapi_hwaccel_deps="vaapi"
1885 h264_vaapi_hwaccel_select="h264_decoder"
1886 h264_vda_hwaccel_deps="vda"
1887 h264_vda_hwaccel_select="h264_decoder"
1888 h264_vdpau_hwaccel_deps="vdpau"
1889 h264_vdpau_hwaccel_select="h264_decoder"
1890 mpeg1_vdpau_hwaccel_deps="vdpau"
1891 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1892 mpeg2_dxva2_hwaccel_deps="dxva2"
1893 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1894 mpeg2_vaapi_hwaccel_deps="vaapi"
1895 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1896 mpeg2_vdpau_hwaccel_deps="vdpau"
1897 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1898 mpeg4_vaapi_hwaccel_deps="vaapi"
1899 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1900 mpeg4_vdpau_hwaccel_deps="vdpau"
1901 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1902 vc1_dxva2_hwaccel_deps="dxva2"
1903 vc1_dxva2_hwaccel_select="vc1_decoder"
1904 vc1_vaapi_hwaccel_deps="vaapi"
1905 vc1_vaapi_hwaccel_select="vc1_decoder"
1906 vc1_vdpau_hwaccel_deps="vdpau"
1907 vc1_vdpau_hwaccel_select="vc1_decoder"
1908 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1909 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1910 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1911
1912 # parsers
1913 h264_parser_select="h264_decoder"
1914 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1915 mpegvideo_parser_select="error_resilience mpegvideo"
1916 vc1_parser_select="mpegvideo"
1917
1918 # external libraries
1919 libfaac_encoder_deps="libfaac"
1920 libfaac_encoder_select="audio_frame_queue"
1921 libfdk_aac_decoder_deps="libfdk_aac"
1922 libfdk_aac_encoder_deps="libfdk_aac"
1923 libfdk_aac_encoder_select="audio_frame_queue"
1924 libgsm_decoder_deps="libgsm"
1925 libgsm_encoder_deps="libgsm"
1926 libgsm_ms_decoder_deps="libgsm"
1927 libgsm_ms_encoder_deps="libgsm"
1928 libilbc_decoder_deps="libilbc"
1929 libilbc_encoder_deps="libilbc"
1930 libmp3lame_encoder_deps="libmp3lame"
1931 libmp3lame_encoder_select="audio_frame_queue"
1932 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1933 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1934 libopencore_amrnb_encoder_select="audio_frame_queue"
1935 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1936 libopenjpeg_decoder_deps="libopenjpeg"
1937 libopenjpeg_encoder_deps="libopenjpeg"
1938 libopus_decoder_deps="libopus"
1939 libopus_encoder_deps="libopus"
1940 libopus_encoder_select="audio_frame_queue"
1941 libschroedinger_decoder_deps="libschroedinger"
1942 libschroedinger_encoder_deps="libschroedinger"
1943 libspeex_decoder_deps="libspeex"
1944 libspeex_encoder_deps="libspeex"
1945 libspeex_encoder_select="audio_frame_queue"
1946 libtheora_encoder_deps="libtheora"
1947 libvo_aacenc_encoder_deps="libvo_aacenc"
1948 libvo_aacenc_encoder_select="audio_frame_queue"
1949 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1950 libvorbis_encoder_deps="libvorbis"
1951 libvorbis_encoder_select="audio_frame_queue"
1952 libvpx_vp8_decoder_deps="libvpx"
1953 libvpx_vp8_encoder_deps="libvpx"
1954 libvpx_vp9_decoder_deps="libvpx"
1955 libvpx_vp9_encoder_deps="libvpx"
1956 libwavpack_encoder_deps="libwavpack"
1957 libwebp_encoder_deps="libwebp"
1958 libx264_encoder_deps="libx264"
1959 libx265_encoder_deps="libx265"
1960 libxavs_encoder_deps="libxavs"
1961 libxvid_encoder_deps="libxvid"
1962
1963 # demuxers / muxers
1964 ac3_demuxer_select="ac3_parser"
1965 asf_demuxer_select="riffdec"
1966 asf_muxer_select="riffenc"
1967 asf_stream_muxer_select="asf_muxer"
1968 avi_demuxer_select="riffdec"
1969 avi_muxer_select="riffenc"
1970 avisynth_demuxer_deps="avisynth"
1971 avisynth_demuxer_select="riffdec"
1972 caf_demuxer_select="riffdec"
1973 dirac_demuxer_select="dirac_parser"
1974 dxa_demuxer_select="riffdec"
1975 eac3_demuxer_select="ac3_parser"
1976 f4v_muxer_select="mov_muxer"
1977 flac_demuxer_select="flac_parser"
1978 hds_muxer_select="flv_muxer"
1979 hls_muxer_select="mpegts_muxer"
1980 ipod_muxer_select="mov_muxer"
1981 ismv_muxer_select="mov_muxer"
1982 matroska_audio_muxer_select="matroska_muxer"
1983 matroska_demuxer_select="riffdec"
1984 matroska_demuxer_suggest="bzlib lzo zlib"
1985 matroska_muxer_select="riffenc"
1986 mmf_muxer_select="riffenc"
1987 mov_demuxer_select="riffdec"
1988 mov_demuxer_suggest="zlib"
1989 mov_muxer_select="riffenc rtpenc_chain"
1990 mp3_demuxer_select="mpegaudio_parser"
1991 mp4_muxer_select="mov_muxer"
1992 mpegts_muxer_select="adts_muxer latm_muxer"
1993 mpegtsraw_demuxer_select="mpegts_demuxer"
1994 mxf_d10_muxer_select="mxf_muxer"
1995 nut_muxer_select="riffenc"
1996 nuv_demuxer_select="riffdec"
1997 ogg_demuxer_select="golomb"
1998 psp_muxer_select="mov_muxer"
1999 rtp_demuxer_select="sdp_demuxer"
2000 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2001 rtsp_demuxer_select="http_protocol rtpdec"
2002 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2003 sap_demuxer_select="sdp_demuxer"
2004 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2005 sdp_demuxer_select="rtpdec"
2006 smoothstreaming_muxer_select="ismv_muxer"
2007 spdif_muxer_select="aac_parser"
2008 tak_demuxer_select="tak_parser"
2009 tg2_muxer_select="mov_muxer"
2010 tgp_muxer_select="mov_muxer"
2011 w64_demuxer_select="wav_demuxer"
2012 wav_demuxer_select="riffdec"
2013 wav_muxer_select="riffenc"
2014 webm_muxer_select="riffenc"
2015 wtv_demuxer_select="riffdec"
2016 xmv_demuxer_select="riffdec"
2017 xwma_demuxer_select="riffdec"
2018
2019 # indevs / outdevs
2020 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2021 alsa_outdev_deps="alsa_asoundlib_h"
2022 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2023 dv1394_indev_deps="dv1394"
2024 dv1394_indev_select="dv_demuxer"
2025 fbdev_indev_deps="linux_fb_h"
2026 jack_indev_deps="jack_jack_h pthreads"
2027 libcdio_indev_deps="libcdio"
2028 libdc1394_indev_deps="libdc1394"
2029 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2030 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2031 pulse_indev_deps="libpulse"
2032 sndio_indev_deps="sndio_h"
2033 sndio_outdev_deps="sndio_h"
2034 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2035 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2036 vfwcap_indev_extralibs="-lavicap32"
2037 x11grab_indev_deps="x11grab XShmCreateImage"
2038
2039 # protocols
2040 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2041 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2042 ffrtmpcrypt_protocol_select="tcp_protocol"
2043 ffrtmphttp_protocol_deps="!librtmp_protocol"
2044 ffrtmphttp_protocol_select="http_protocol"
2045 gopher_protocol_select="network"
2046 http_protocol_select="tcp_protocol"
2047 httpproxy_protocol_select="tcp_protocol"
2048 https_protocol_select="tls_protocol"
2049 librtmp_protocol_deps="librtmp"
2050 librtmpe_protocol_deps="librtmp"
2051 librtmps_protocol_deps="librtmp"
2052 librtmpt_protocol_deps="librtmp"
2053 librtmpte_protocol_deps="librtmp"
2054 mmsh_protocol_select="http_protocol"
2055 mmst_protocol_select="network"
2056 rtmp_protocol_deps="!librtmp_protocol"
2057 rtmp_protocol_select="tcp_protocol"
2058 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2059 rtmps_protocol_deps="!librtmp_protocol"
2060 rtmps_protocol_select="tls_protocol"
2061 rtmpt_protocol_select="ffrtmphttp_protocol"
2062 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2063 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2064 rtp_protocol_select="udp_protocol"
2065 sctp_protocol_deps="struct_sctp_event_subscribe"
2066 sctp_protocol_select="network"
2067 srtp_protocol_select="rtp_protocol"
2068 tcp_protocol_select="network"
2069 tls_protocol_deps_any="openssl gnutls"
2070 tls_protocol_select="tcp_protocol"
2071 udp_protocol_select="network"
2072 unix_protocol_deps="sys_un_h"
2073 unix_protocol_select="network"
2074
2075 # filters
2076 blackframe_filter_deps="gpl"
2077 boxblur_filter_deps="gpl"
2078 cropdetect_filter_deps="gpl"
2079 delogo_filter_deps="gpl"
2080 drawtext_filter_deps="libfreetype"
2081 frei0r_filter_deps="frei0r dlopen"
2082 frei0r_filter_extralibs='$ldl'
2083 frei0r_src_filter_deps="frei0r dlopen"
2084 frei0r_src_filter_extralibs='$ldl'
2085 hqdn3d_filter_deps="gpl"
2086 interlace_filter_deps="gpl"
2087 ocv_filter_deps="libopencv"
2088 resample_filter_deps="avresample"
2089 scale_filter_deps="swscale"
2090
2091 # examples
2092 avcodec_example_deps="avcodec avutil"
2093 filter_audio_example_deps="avfilter avutil"
2094 metadata_example_deps="avformat avutil"
2095 output_example_deps="avcodec avformat avutil swscale"
2096 transcode_aac_example_deps="avcodec avformat avresample"
2097
2098 # libraries
2099 avcodec_deps="avutil"
2100 avdevice_deps="avutil avcodec avformat"
2101 avfilter_deps="avutil"
2102 avformat_deps="avutil avcodec"
2103 avresample_deps="avutil"
2104 swscale_deps="avutil"
2105
2106 # programs
2107 avconv_deps="avcodec avfilter avformat avresample swscale"
2108 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2109                fps_filter null_filter resample_filter scale_filter
2110                setpts_filter trim_filter"
2111 avplay_deps="avcodec avformat avresample swscale sdl"
2112 avplay_libs='$sdl_libs'
2113 avplay_select="rdft"
2114 avprobe_deps="avcodec avformat"
2115 avserver_deps="avformat fork !shared"
2116 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2117
2118 # documentation
2119 pod2man_deps="doc"
2120 texi2html_deps="doc"
2121
2122 # default parameters
2123
2124 logfile="config.log"
2125
2126 # installation paths
2127 prefix_default="/usr/local"
2128 bindir_default='${prefix}/bin'
2129 datadir_default='${prefix}/share/avconv'
2130 docdir_default='${prefix}/share/doc/libav'
2131 incdir_default='${prefix}/include'
2132 libdir_default='${prefix}/lib'
2133 mandir_default='${prefix}/share/man'
2134 shlibdir_default="$libdir_default"
2135
2136 # toolchain
2137 ar_default="ar"
2138 cc_default="gcc"
2139 host_cc_default="gcc"
2140 cp_f="cp -f"
2141 ln_s="ln -s -f"
2142 nm_default="nm -g"
2143 objformat="elf"
2144 pkg_config_default=pkg-config
2145 ranlib="ranlib"
2146 strip="strip"
2147 yasmexe="yasm"
2148
2149 nogas=":"
2150
2151 # machine
2152 arch_default=$(uname -m)
2153 cpu="generic"
2154
2155 # OS
2156 target_os_default=$(tolower $(uname -s))
2157 host_os=$target_os_default
2158
2159 # configurable options
2160 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2161
2162 enable asm
2163 enable debug
2164 enable doc
2165 enable optimizations
2166 enable safe_bitstream_reader
2167 enable static
2168 enable swscale_alpha
2169
2170 # By default, enable only those hwaccels that have no external dependencies.
2171 enable dxva2 vdpau
2172
2173 # build settings
2174 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2175 LIBPREF="lib"
2176 LIBSUF=".a"
2177 FULLNAME='$(NAME)$(BUILDSUF)'
2178 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2179 SLIBPREF="lib"
2180 SLIBSUF=".so"
2181 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2182 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2183 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2184 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2185 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2186 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2187
2188 asflags_filter=echo
2189 cflags_filter=echo
2190 ldflags_filter=echo
2191
2192 AS_C='-c'
2193 AS_O='-o $@'
2194 CC_C='-c'
2195 CC_E='-E -o $@'
2196 CC_O='-o $@'
2197 LD_O='-o $@'
2198 LD_LIB='-l%'
2199 LD_PATH='-L'
2200 HOSTCC_C='-c'
2201 HOSTCC_E='-E -o $@'
2202 HOSTCC_O='-o $@'
2203 HOSTLD_O='-o $@'
2204
2205 host_libs='-lm'
2206 host_cflags_filter=echo
2207 host_ldflags_filter=echo
2208
2209 target_path='$(CURDIR)'
2210
2211 # since the object filename is not given with the -MM flag, the compiler
2212 # is only able to print the basename, and we must add the path ourselves
2213 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2214 DEPFLAGS='-MM'
2215
2216 # find source path
2217 if test -f configure; then
2218     source_path=.
2219 else
2220     source_path=$(cd $(dirname "$0"); pwd)
2221     echo "$source_path" | grep -q '[[:blank:]]' &&
2222         die "Out of tree builds are impossible with whitespace in source path."
2223     test -e "$source_path/config.h" &&
2224         die "Out of tree builds are impossible with config.h in source dir."
2225 fi
2226
2227 for v in "$@"; do
2228     r=${v#*=}
2229     l=${v%"$r"}
2230     r=$(sh_quote "$r")
2231     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2232 done
2233
2234 find_things(){
2235     thing=$1
2236     pattern=$2
2237     file=$source_path/$3
2238     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2239 }
2240
2241 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2242 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2243 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2244 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2245 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2246 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2247 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2248 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2249 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2250 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2251 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2252
2253 ALL_COMPONENTS="
2254     $BSF_LIST
2255     $DECODER_LIST
2256     $DEMUXER_LIST
2257     $ENCODER_LIST
2258     $FILTER_LIST
2259     $HWACCEL_LIST
2260     $INDEV_LIST
2261     $MUXER_LIST
2262     $OUTDEV_LIST
2263     $PARSER_LIST
2264     $PROTOCOL_LIST
2265 "
2266
2267 for n in $COMPONENT_LIST; do
2268     v=$(toupper ${n%s})_LIST
2269     eval enable \$$v
2270     eval ${n}_if_any="\$$v"
2271 done
2272
2273 enable $ARCH_EXT_LIST
2274
2275 die_unknown(){
2276     echo "Unknown option \"$1\"."
2277     echo "See $0 --help for available options."
2278     exit 1
2279 }
2280
2281 print_3_columns() {
2282     cat | tr ' ' '\n' | sort | pr -r -3 -t
2283 }
2284
2285 show_list() {
2286     suffix=_$1
2287     shift
2288     echo $* | sed s/$suffix//g | print_3_columns
2289     exit 0
2290 }
2291
2292 rand_list(){
2293     IFS=', '
2294     set -- $*
2295     unset IFS
2296     for thing; do
2297         comp=${thing%:*}
2298         prob=${thing#$comp}
2299         prob=${prob#:}
2300         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2301         echo "prob ${prob:-0.5}"
2302         printf '%s\n' $comp
2303     done
2304 }
2305
2306 do_random(){
2307     action=$1
2308     shift
2309     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2310     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2311 }
2312
2313 for opt do
2314     optval="${opt#*=}"
2315     case "$opt" in
2316         --extra-ldflags=*)
2317             add_ldflags $optval
2318         ;;
2319         --extra-libs=*)
2320             add_extralibs $optval
2321         ;;
2322         --disable-devices)
2323             disable $INDEV_LIST $OUTDEV_LIST
2324         ;;
2325         --enable-debug=*)
2326             debuglevel="$optval"
2327         ;;
2328         --disable-programs)
2329             disable $PROGRAM_LIST
2330         ;;
2331         --disable-everything)
2332             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2333         ;;
2334         --disable-all)
2335             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2336             disable $LIBRARY_LIST $PROGRAM_LIST doc
2337         ;;
2338         --enable-random|--disable-random)
2339             action=${opt%%-random}
2340             do_random ${action#--} $COMPONENT_LIST
2341         ;;
2342         --enable-random=*|--disable-random=*)
2343             action=${opt%%-random=*}
2344             do_random ${action#--} $optval
2345         ;;
2346         --enable-*=*|--disable-*=*)
2347             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2348             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2349             eval list=\$$(toupper $thing)_LIST
2350             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2351             $action $(filter "$name" $list)
2352         ;;
2353         --enable-?*|--disable-?*)
2354             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2355             if is_in $option $COMPONENT_LIST; then
2356                 test $action = disable && action=unset
2357                 eval $action \$$(toupper ${option%s})_LIST
2358             elif is_in $option $CMDLINE_SELECT; then
2359                 $action $option
2360             else
2361                 die_unknown $opt
2362             fi
2363         ;;
2364         --list-*)
2365             NAME="${opt#--list-}"
2366             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2367             NAME=${NAME%s}
2368             eval show_list $NAME \$$(toupper $NAME)_LIST
2369         ;;
2370         --help|-h) show_help
2371         ;;
2372         *)
2373             optname="${opt%%=*}"
2374             optname="${optname#--}"
2375             optname=$(echo "$optname" | sed 's/-/_/g')
2376             if is_in $optname $CMDLINE_SET; then
2377                 eval $optname='$optval'
2378             elif is_in $optname $CMDLINE_APPEND; then
2379                 append $optname "$optval"
2380             else
2381                 die_unknown $opt
2382             fi
2383         ;;
2384     esac
2385 done
2386
2387 disabled logging && logfile=/dev/null
2388
2389 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2390 set >> $logfile
2391
2392 test -n "$cross_prefix" && enable cross_compile
2393
2394 if enabled cross_compile; then
2395     test -n "$arch" && test -n "$target_os" ||
2396         die "Must specify target arch and OS when cross-compiling"
2397 fi
2398
2399 ar_default="${cross_prefix}${ar_default}"
2400 cc_default="${cross_prefix}${cc_default}"
2401 nm_default="${cross_prefix}${nm_default}"
2402 pkg_config_default="${cross_prefix}${pkg_config_default}"
2403 ranlib="${cross_prefix}${ranlib}"
2404 strip="${cross_prefix}${strip}"
2405
2406 sysinclude_default="${sysroot}/usr/include"
2407
2408 case "$toolchain" in
2409     clang-asan)
2410         cc_default="clang"
2411         add_cflags  -fsanitize=address
2412         add_ldflags -fsanitize=address
2413     ;;
2414     clang-tsan)
2415         cc_default="clang"
2416         add_cflags  -fsanitize=thread -pie
2417         add_ldflags -fsanitize=thread -pie
2418     ;;
2419     clang-usan)
2420         cc_default="clang"
2421         add_cflags  -fsanitize=undefined
2422         add_ldflags -fsanitize=undefined
2423     ;;
2424     gcc-asan)
2425         cc_default="gcc"
2426         add_cflags  -fsanitize=address
2427         add_ldflags -fsanitize=address
2428     ;;
2429     gcc-tsan)
2430         cc_default="gcc"
2431         add_cflags  -fsanitize=thread -pie -fPIC
2432         add_ldflags -fsanitize=thread -pie -fPIC
2433     ;;
2434     gcc-usan)
2435         cc_default="gcc"
2436         add_cflags  -fsanitize=undefined
2437         add_ldflags -fsanitize=undefined
2438     ;;
2439     valgrind-massif)
2440         target_exec_default="valgrind"
2441         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2442     ;;
2443     valgrind-memcheck)
2444         target_exec_default="valgrind"
2445         target_exec_args="--track-origins=yes --leak-check=full"
2446     ;;
2447     msvc)
2448         # Check whether the current MSVC version needs the C99 converter.
2449         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2450         # support enough of C99 to build libav. Default to the new
2451         # behaviour if the regexp was unable to match anything, since this
2452         # successfully parses the version number of existing supported
2453         # versions that require the converter (MSVC 2010 and 2012).
2454         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2455         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2456             cc_default="cl"
2457         else
2458             cc_default="c99wrap cl"
2459         fi
2460         ld_default="link"
2461         nm_default="dumpbin -symbols"
2462         ar_default="lib"
2463         target_os_default="win32"
2464         # Use a relative path for TMPDIR. This makes sure all the
2465         # ffconf temp files are written with a relative path, avoiding
2466         # issues with msys/win32 path conversion for MSVC parameters
2467         # such as -Fo<file> or -out:<file>.
2468         TMPDIR=.
2469     ;;
2470     icl)
2471         cc_default="icl"
2472         ld_default="xilink"
2473         nm_default="dumpbin -symbols"
2474         ar_default="xilib"
2475         target_os_default="win32"
2476         TMPDIR=.
2477     ;;
2478     gcov)
2479         add_cflags  -fprofile-arcs -ftest-coverage
2480         add_ldflags -fprofile-arcs -ftest-coverage
2481     ;;
2482     hardened)
2483         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2484         add_ldflags -Wl,-z,relro -Wl,-z,now
2485     ;;
2486     ?*)
2487         die "Unknown toolchain $toolchain"
2488     ;;
2489 esac
2490
2491 set_default arch cc pkg_config sysinclude target_exec target_os
2492 enabled cross_compile || host_cc_default=$cc
2493 set_default host_cc
2494
2495 if ! $pkg_config --version >/dev/null 2>&1; then
2496     warn "$pkg_config not found, library detection may fail."
2497     pkg_config=false
2498 fi
2499
2500 exesuf() {
2501     case $1 in
2502         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2503     esac
2504 }
2505
2506 EXESUF=$(exesuf $target_os)
2507 HOSTEXESUF=$(exesuf $host_os)
2508
2509 # set temporary file name
2510 : ${TMPDIR:=$TEMPDIR}
2511 : ${TMPDIR:=$TMP}
2512 : ${TMPDIR:=/tmp}
2513
2514 if ! check_cmd mktemp -u XXXXXX; then
2515     # simple replacement for missing mktemp
2516     # NOT SAFE FOR GENERAL USE
2517     mktemp(){
2518         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2519     }
2520 fi
2521
2522 tmpfile(){
2523     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2524         (set -C; exec > $tmp) 2>/dev/null ||
2525         die "Unable to create temporary file in $TMPDIR."
2526     append TMPFILES $tmp
2527     eval $1=$tmp
2528 }
2529
2530 trap 'rm -f -- $TMPFILES' EXIT
2531
2532 tmpfile TMPASM .asm
2533 tmpfile TMPC   .c
2534 tmpfile TMPE   $EXESUF
2535 tmpfile TMPH   .h
2536 tmpfile TMPO   .o
2537 tmpfile TMPS   .S
2538 tmpfile TMPSH  .sh
2539 tmpfile TMPV   .ver
2540
2541 unset -f mktemp
2542
2543 chmod +x $TMPE
2544
2545 # make sure we can execute files in $TMPDIR
2546 cat > $TMPSH 2>> $logfile <<EOF
2547 #! /bin/sh
2548 EOF
2549 chmod +x $TMPSH >> $logfile 2>&1
2550 if ! $TMPSH >> $logfile 2>&1; then
2551     cat <<EOF
2552 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2553 variable to another directory and make sure that it is not mounted noexec.
2554 EOF
2555     die "Sanity test failed."
2556 fi
2557
2558 ccc_flags(){
2559     for flag; do
2560         case $flag in
2561             -std=c99)           echo -c99                       ;;
2562             -mcpu=*)            echo -arch ${flag#*=}           ;;
2563             -mieee)             echo -ieee                      ;;
2564             -O*|-fast)          echo $flag                      ;;
2565             -fno-math-errno)    echo -assume nomath_errno       ;;
2566             -g)                 echo -g3                        ;;
2567             -Wall)              echo -msg_enable level2         ;;
2568             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2569             -Wl,*)              echo $flag                      ;;
2570             -f*|-W*)                                            ;;
2571             *)                  echo $flag                      ;;
2572         esac
2573    done
2574 }
2575
2576 cparser_flags(){
2577     for flag; do
2578         case $flag in
2579             -Wno-switch)             echo -Wno-switch-enum ;;
2580             -Wno-format-zero-length) ;;
2581             -Wdisabled-optimization) ;;
2582             -Wno-pointer-sign)       echo -Wno-other ;;
2583             *)                       echo $flag ;;
2584         esac
2585     done
2586 }
2587
2588 msvc_common_flags(){
2589     for flag; do
2590         case $flag in
2591             # In addition to specifying certain flags under the compiler
2592             # specific filters, they must be specified here as well or else the
2593             # generic catch all at the bottom will print the original flag.
2594             -Wall)                ;;
2595             -std=c99)             ;;
2596             # Common flags
2597             -fomit-frame-pointer) ;;
2598             -g)                   echo -Z7 ;;
2599             -fno-math-errno)      ;;
2600             -fno-common)          ;;
2601             -fno-signed-zeros)    ;;
2602             -fPIC)                ;;
2603             -mthumb)              ;;
2604             -march=*)             ;;
2605             -lz)                  echo zlib.lib ;;
2606             -lavifil32)           echo vfw32.lib ;;
2607             -lavicap32)           echo vfw32.lib user32.lib ;;
2608             -l*)                  echo ${flag#-l}.lib ;;
2609             *)                    echo $flag ;;
2610         esac
2611     done
2612 }
2613
2614 msvc_flags(){
2615     msvc_common_flags "$@"
2616     for flag; do
2617         case $flag in
2618             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2619                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2620                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2621                                        -wd4273 ;;
2622         esac
2623     done
2624 }
2625
2626 icl_flags(){
2627     msvc_common_flags "$@"
2628     for flag; do
2629         case $flag in
2630             # Despite what Intel's documentation says -Wall, which is supported
2631             # on Windows, does enable remarks so disable them here.
2632             -Wall)                echo $flag -Qdiag-disable:remark ;;
2633             -std=c99)             echo -Qstd=c99 ;;
2634         esac
2635     done
2636 }
2637
2638 pgi_flags(){
2639     for flag; do
2640         case $flag in
2641             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2642             -fomit-frame-pointer) echo -Mnoframe ;;
2643             -g)                   echo -gopt ;;
2644             *)                    echo $flag ;;
2645         esac
2646     done
2647 }
2648
2649 suncc_flags(){
2650     for flag; do
2651         case $flag in
2652             -march=*|-mcpu=*)
2653                 case "${flag#*=}" in
2654                     native)                   echo -xtarget=native       ;;
2655                     v9|niagara)               echo -xarch=sparc          ;;
2656                     ultrasparc)               echo -xarch=sparcvis       ;;
2657                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2658                     i586|pentium)             echo -xchip=pentium        ;;
2659                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2660                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2661                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2662                     pentium4*)          echo -xtarget=pentium4           ;;
2663                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2664                     *-sse3)             echo -xarch=sse3                 ;;
2665                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2666                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2667                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2668                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2669                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2670                     k8|opteron|athlon64|athlon-fx)
2671                                                echo -xarch=sse2a         ;;
2672                     athlon*)                   echo -xarch=pentium_proa  ;;
2673                 esac
2674                 ;;
2675             -std=c99)             echo -xc99              ;;
2676             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2677             -fPIC)                echo -KPIC -xcode=pic32 ;;
2678             -W*,*)                echo $flag              ;;
2679             -f*-*|-W*|-mimpure-text)                      ;;
2680             -shared)              echo -G                 ;;
2681             *)                    echo $flag              ;;
2682         esac
2683     done
2684 }
2685
2686 tms470_flags(){
2687     for flag; do
2688         case $flag in
2689             -march=*|-mcpu=*)
2690                 case "${flag#*=}" in
2691                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2692                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2693                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2694                     armv6*|arm11*)          echo -mv=6   ;;
2695                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2696                                             echo -mv=5e  ;;
2697                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2698                 esac
2699                 ;;
2700             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2701             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2702             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2703             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2704             -msoft-float)   echo --float_support=vfplib       ;;
2705             -O[0-3]|-mf=*)  echo $flag                        ;;
2706             -g)             echo -g -mn                       ;;
2707             -pds=*)         echo $flag                        ;;
2708             -D*|-I*)        echo $flag                        ;;
2709             --gcc|--abi=*)  echo $flag                        ;;
2710             -me)            echo $flag                        ;;
2711         esac
2712     done
2713 }
2714
2715 probe_cc(){
2716     pfx=$1
2717     _cc=$2
2718
2719     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2720     unset _ld_o _ldflags _ld_lib _ld_path
2721     unset _depflags _DEPCMD _DEPFLAGS
2722     _flags_filter=echo
2723
2724     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2725         _type=llvm_gcc
2726         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2727         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2728         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2729         _cflags_speed='-O3'
2730         _cflags_size='-Os'
2731     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2732         _type=gcc
2733         gcc_version=$($_cc --version | head -n1)
2734         gcc_basever=$($_cc -dumpversion)
2735         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2736         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2737         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2738         if ! $_cc -dumpversion | grep -q '^2\.'; then
2739             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2740         fi
2741         _cflags_speed='-O3'
2742         _cflags_size='-Os'
2743     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2744         _type=icc
2745         _ident=$($_cc --version | head -n1)
2746         _depflags='-MMD'
2747         _cflags_speed='-O3'
2748         _cflags_size='-Os'
2749         _cflags_noopt='-O1'
2750     elif $_cc -v 2>&1 | grep -q xlc; then
2751         _type=xlc
2752         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2753         _cflags_speed='-O5'
2754         _cflags_size='-O5 -qcompact'
2755     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2756         _type=ccc
2757         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2758         _DEPFLAGS='-M'
2759         _cflags_speed='-fast'
2760         _cflags_size='-O1'
2761         _flags_filter=ccc_flags
2762     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2763         test -d "$sysroot" || die "No valid sysroot specified."
2764         _type=armcc
2765         _ident=$($_cc --vsn | head -n1)
2766         armcc_conf="$PWD/armcc.conf"
2767         $_cc --arm_linux_configure                 \
2768              --arm_linux_config_file="$armcc_conf" \
2769              --configure_sysroot="$sysroot"        \
2770              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2771              die "Error creating armcc configuration file."
2772         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2773         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2774         as_default="${cross_prefix}gcc"
2775         _depflags='-MMD'
2776         _cflags_speed='-O3'
2777         _cflags_size='-Os'
2778     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2779         _type=tms470
2780         _ident=$($_cc -version | head -n1 | tr -s ' ')
2781         _flags='--gcc --abi=eabi -me'
2782         _cc_e='-ppl -fe=$@'
2783         _cc_o='-fe=$@'
2784         _depflags='-ppa -ppd=$(@:.o=.d)'
2785         _cflags_speed='-O3 -mf=5'
2786         _cflags_size='-O3 -mf=2'
2787         _flags_filter=tms470_flags
2788     elif $_cc -v 2>&1 | grep -q clang; then
2789         _type=clang
2790         _ident=$($_cc --version | head -n1)
2791         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2792         _cflags_speed='-O3'
2793         _cflags_size='-Os'
2794     elif $_cc -V 2>&1 | grep -q Sun; then
2795         _type=suncc
2796         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2797         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2798         _DEPFLAGS='-xM1 -xc99'
2799         _ldflags='-std=c99'
2800         _cflags_speed='-O5'
2801         _cflags_size='-O5 -xspace'
2802         _flags_filter=suncc_flags
2803     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2804         _type=pathscale
2805         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2806         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2807         _cflags_speed='-O2'
2808         _cflags_size='-Os'
2809         _flags_filter='filter_out -Wdisabled-optimization'
2810     elif $_cc -v 2>&1 | grep -q Open64; then
2811         _type=open64
2812         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2813         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2814         _cflags_speed='-O2'
2815         _cflags_size='-Os'
2816         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2817     elif $_cc -V 2>&1 | grep -q Portland; then
2818         _type=pgi
2819         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2820         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2821         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2822         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2823         _cflags_noopt="-O1"
2824         _flags_filter=pgi_flags
2825     elif $_cc 2>&1 | grep -q Microsoft; then
2826         _type=msvc
2827         _ident=$($cc 2>&1 | head -n1)
2828         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2829         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2830         _cflags_speed="-O2"
2831         _cflags_size="-O1"
2832         if $_cc 2>&1 | grep -q Linker; then
2833             _ld_o='-out:$@'
2834         else
2835             _ld_o='-Fe$@'
2836         fi
2837         _cc_o='-Fo$@'
2838         _cc_e='-P -Fi$@'
2839         _flags_filter=msvc_flags
2840         _ld_lib='lib%.a'
2841         _ld_path='-libpath:'
2842         _flags='-nologo'
2843         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2844         if [ $pfx = hostcc ]; then
2845             append _cflags -Dsnprintf=_snprintf
2846         fi
2847     elif $_cc 2>&1 | grep -q Intel; then
2848         _type=icl
2849         _ident=$($cc 2>&1 | head -n1)
2850         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2851         # Not only is O3 broken on 13.x+ but it is slower on all previous
2852         # versions (tested) as well.
2853         _cflags_speed="-O2"
2854         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2855         if $_cc 2>&1 | grep -q Linker; then
2856             _ld_o='-out:$@'
2857         else
2858             _ld_o='-Fe$@'
2859         fi
2860         _cc_o='-Fo$@'
2861         _cc_e='-P'
2862         _flags_filter=icl_flags
2863         _ld_lib='lib%.a'
2864         _ld_path='-libpath:'
2865         # -Qdiag-error to make icl error when seeing certain unknown arguments
2866         _flags='-nologo -Qdiag-error:4044,10157'
2867         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2868         # with MSVC which enables it by default.
2869         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2870         if [ $pfx = hostcc ]; then
2871             append _cflags -Dsnprintf=_snprintf
2872         fi
2873     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2874         _type=cparser
2875         _ident=$($_cc --version | head -n1)
2876         _depflags='-MMD'
2877         _cflags_speed='-O4'
2878         _cflags_size='-O2'
2879         _flags_filter=cparser_flags
2880     fi
2881
2882     eval ${pfx}_type=\$_type
2883     eval ${pfx}_ident=\$_ident
2884 }
2885
2886 set_ccvars(){
2887     eval ${1}_C=\${_cc_c-\${${1}_C}}
2888     eval ${1}_E=\${_cc_e-\${${1}_E}}
2889     eval ${1}_O=\${_cc_o-\${${1}_O}}
2890
2891     if [ -n "$_depflags" ]; then
2892         eval ${1}_DEPFLAGS=\$_depflags
2893     else
2894         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2895         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2896         eval DEP${1}FLAGS=\$_flags
2897     fi
2898 }
2899
2900 probe_cc cc "$cc"
2901 cflags_filter=$_flags_filter
2902 cflags_speed=$_cflags_speed
2903 cflags_size=$_cflags_size
2904 cflags_noopt=$_cflags_noopt
2905 add_cflags $_flags $_cflags
2906 cc_ldflags=$_ldflags
2907 set_ccvars CC
2908
2909 probe_cc hostcc "$host_cc"
2910 host_cflags_filter=$_flags_filter
2911 add_host_cflags  $_flags $_cflags
2912 set_ccvars HOSTCC
2913
2914 test -n "$cc_type" && enable $cc_type ||
2915     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2916
2917 : ${as_default:=$cc}
2918 : ${dep_cc_default:=$cc}
2919 : ${ld_default:=$cc}
2920 : ${host_ld_default:=$host_cc}
2921 set_default ar as dep_cc ld host_ld
2922
2923 probe_cc as "$as"
2924 asflags_filter=$_flags_filter
2925 add_asflags $_flags $_cflags
2926 set_ccvars AS
2927
2928 probe_cc ld "$ld"
2929 ldflags_filter=$_flags_filter
2930 add_ldflags $_flags $_ldflags
2931 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2932 LD_O=${_ld_o-$LD_O}
2933 LD_LIB=${_ld_lib-$LD_LIB}
2934 LD_PATH=${_ld_path-$LD_PATH}
2935
2936 probe_cc hostld "$host_ld"
2937 host_ldflags_filter=$_flags_filter
2938 add_host_ldflags $_flags $_ldflags
2939 HOSTLD_O=${_ld_o-$HOSTLD_O}
2940
2941 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2942     probe_cc depcc "$dep_cc"
2943     CCDEP=${_DEPCMD:-$DEPCMD}
2944     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2945     DEPCCFLAGS=$_flags
2946 fi
2947
2948 if $ar 2>&1 | grep -q Microsoft; then
2949     arflags="-nologo"
2950     ar_o='-out:$@'
2951 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2952     arflags="rq"
2953     ar_o='$@'
2954 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2955     arflags='-Xany -r -c'
2956     ar_o='$@'
2957 else
2958     arflags="rc"
2959     ar_o='$@'
2960 fi
2961
2962 add_cflags $extra_cflags
2963 add_asflags $extra_cflags
2964
2965 if test -n "$sysroot"; then
2966     case "$cc_type" in
2967         gcc|llvm_gcc|clang)
2968             add_cppflags --sysroot="$sysroot"
2969             add_ldflags --sysroot="$sysroot"
2970         ;;
2971         tms470)
2972             add_cppflags -I"$sysinclude"
2973             add_ldflags  --sysroot="$sysroot"
2974         ;;
2975     esac
2976 fi
2977
2978 if test "$cpu" = host; then
2979     enabled cross_compile &&
2980         die "--cpu=host makes no sense when cross-compiling."
2981
2982     case "$cc_type" in
2983         gcc|llvm_gcc)
2984             check_native(){
2985                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2986                 sed -n "/cc1.*$1=/{
2987                             s/.*$1=\\([^ ]*\\).*/\\1/
2988                             p
2989                             q
2990                         }" $TMPE
2991             }
2992             cpu=$(check_native -march || check_native -mcpu)
2993         ;;
2994     esac
2995
2996     test "${cpu:-host}" = host &&
2997         die "--cpu=host not supported with compiler $cc"
2998 fi
2999
3000 # Deal with common $arch aliases
3001 case "$arch" in
3002     aarch64|arm64)
3003         arch="aarch64"
3004     ;;
3005     arm*)
3006         arch="arm"
3007     ;;
3008     mips*|IP*)
3009         arch="mips"
3010     ;;
3011     parisc*|hppa*)
3012         arch="parisc"
3013     ;;
3014     "Power Macintosh"|ppc*|powerpc*)
3015         arch="ppc"
3016     ;;
3017     s390|s390x)
3018         arch="s390"
3019     ;;
3020     sh4|sh)
3021         arch="sh4"
3022     ;;
3023     sun4u|sparc*)
3024         arch="sparc"
3025     ;;
3026     tilegx|tile-gx)
3027         arch="tilegx"
3028     ;;
3029     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3030         arch="x86"
3031     ;;
3032 esac
3033
3034 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3035 enable $arch
3036
3037 # Add processor-specific flags
3038 if enabled aarch64; then
3039
3040     case $cpu in
3041         armv*)
3042             cpuflags="-march=$cpu"
3043         ;;
3044         *)
3045             cpuflags="-mcpu=$cpu"
3046         ;;
3047     esac
3048
3049 elif enabled alpha; then
3050
3051     cpuflags="-mcpu=$cpu"
3052
3053 elif enabled arm; then
3054
3055     check_arm_arch() {
3056         check_cpp_condition stddef.h \
3057             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3058             $cpuflags
3059     }
3060
3061     probe_arm_arch() {
3062         if   check_arm_arch 4;        then echo armv4;
3063         elif check_arm_arch 4T;       then echo armv4t;
3064         elif check_arm_arch 5;        then echo armv5;
3065         elif check_arm_arch 5E;       then echo armv5e;
3066         elif check_arm_arch 5T;       then echo armv5t;
3067         elif check_arm_arch 5TE;      then echo armv5te;
3068         elif check_arm_arch 5TEJ;     then echo armv5te;
3069         elif check_arm_arch 6;        then echo armv6;
3070         elif check_arm_arch 6J;       then echo armv6j;
3071         elif check_arm_arch 6K;       then echo armv6k;
3072         elif check_arm_arch 6Z;       then echo armv6z;
3073         elif check_arm_arch 6ZK;      then echo armv6zk;
3074         elif check_arm_arch 6T2;      then echo armv6t2;
3075         elif check_arm_arch 7;        then echo armv7;
3076         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3077         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3078         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3079         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3080         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3081         fi
3082     }
3083
3084     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3085
3086     case $cpu in
3087         armv*)
3088             cpuflags="-march=$cpu"
3089             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3090         ;;
3091         *)
3092             cpuflags="-mcpu=$cpu"
3093             case $cpu in
3094                 cortex-a*)                               subarch=armv7a  ;;
3095                 cortex-r*)                               subarch=armv7r  ;;
3096                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3097                 arm11*)                                  subarch=armv6   ;;
3098                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3099                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3100                 *)                             subarch=$(probe_arm_arch) ;;
3101             esac
3102         ;;
3103     esac
3104
3105     case "$subarch" in
3106         armv5t*)    enable fast_clz                ;;
3107         armv[6-8]*) enable fast_clz fast_unaligned ;;
3108     esac
3109
3110 elif enabled avr32; then
3111
3112     case $cpu in
3113         ap7[02]0[0-2])
3114             subarch="avr32_ap"
3115             cpuflags="-mpart=$cpu"
3116         ;;
3117         ap)
3118             subarch="avr32_ap"
3119             cpuflags="-march=$cpu"
3120         ;;
3121         uc3[ab]*)
3122             subarch="avr32_uc"
3123             cpuflags="-mcpu=$cpu"
3124         ;;
3125         uc)
3126             subarch="avr32_uc"
3127             cpuflags="-march=$cpu"
3128         ;;
3129     esac
3130
3131 elif enabled bfin; then
3132
3133     cpuflags="-mcpu=$cpu"
3134
3135 elif enabled mips; then
3136
3137     cpuflags="-march=$cpu"
3138
3139 elif enabled ppc; then
3140
3141     disable ldbrx
3142
3143     case $(tolower $cpu) in
3144         601|ppc601|powerpc601)
3145             cpuflags="-mcpu=601"
3146             disable altivec
3147         ;;
3148         603*|ppc603*|powerpc603*)
3149             cpuflags="-mcpu=603"
3150             disable altivec
3151         ;;
3152         604*|ppc604*|powerpc604*)
3153             cpuflags="-mcpu=604"
3154             disable altivec
3155         ;;
3156         g3|75*|ppc75*|powerpc75*)
3157             cpuflags="-mcpu=750"
3158             disable altivec
3159         ;;
3160         g4|745*|ppc745*|powerpc745*)
3161             cpuflags="-mcpu=7450"
3162         ;;
3163         74*|ppc74*|powerpc74*)
3164             cpuflags="-mcpu=7400"
3165         ;;
3166         g5|970|ppc970|powerpc970)
3167             cpuflags="-mcpu=970"
3168         ;;
3169         power[3-7]*)
3170             cpuflags="-mcpu=$cpu"
3171         ;;
3172         cell)
3173             cpuflags="-mcpu=cell"
3174             enable ldbrx
3175         ;;
3176         e500mc)
3177             cpuflags="-mcpu=e500mc"
3178             disable altivec
3179         ;;
3180         e500v2)
3181             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3182             disable altivec
3183             disable dcbzl
3184         ;;
3185         e500)
3186             cpuflags="-mcpu=8540 -mhard-float"
3187             disable altivec
3188             disable dcbzl
3189         ;;
3190     esac
3191
3192 elif enabled sparc; then
3193
3194     case $cpu in
3195         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3196             cpuflags="-mcpu=$cpu"
3197         ;;
3198         ultrasparc*|niagara[234])
3199             cpuflags="-mcpu=$cpu"
3200         ;;
3201     esac
3202
3203 elif enabled x86; then
3204
3205     case $cpu in
3206         i[345]86|pentium)
3207             cpuflags="-march=$cpu"
3208             disable mmx
3209         ;;
3210         # targets that do NOT support nopl and conditional mov (cmov)
3211         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3212             cpuflags="-march=$cpu"
3213             disable i686
3214         ;;
3215         # targets that do support nopl and conditional mov (cmov)
3216         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3217             cpuflags="-march=$cpu"
3218             enable i686
3219             enable fast_cmov
3220         ;;
3221         # targets that do support conditional mov but on which it's slow
3222         pentium4|pentium4m|prescott|nocona)
3223             cpuflags="-march=$cpu"
3224             enable i686
3225             disable fast_cmov
3226         ;;
3227     esac
3228
3229 fi
3230
3231 if [ "$cpu" != generic ]; then
3232     add_cflags  $cpuflags
3233     add_asflags $cpuflags
3234 fi
3235
3236 # compiler sanity check
3237 check_exec <<EOF
3238 int main(void){ return 0; }
3239 EOF
3240 if test "$?" != 0; then
3241     echo "$cc is unable to create an executable file."
3242     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3243         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3244         echo "Only do this if you know what cross compiling means."
3245     fi
3246     die "C compiler test failed."
3247 fi
3248
3249 add_cppflags -D_ISOC99_SOURCE
3250 check_cflags -std=c99
3251 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3252 #include <stdlib.h>
3253 EOF
3254 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3255 #include <stdlib.h>
3256 EOF
3257
3258 add_host_cppflags -D_ISOC99_SOURCE
3259 check_host_cflags -std=c99
3260 check_host_cflags -Wall
3261 check_host_cflags -O3
3262
3263 check_64bit(){
3264     arch32=$1
3265     arch64=$2
3266     expr=$3
3267     check_code cc "" "int test[2*($expr) - 1]" &&
3268         subarch=$arch64 || subarch=$arch32
3269 }
3270
3271 case "$arch" in
3272     aarch64|alpha|ia64)
3273         spic=$shared
3274     ;;
3275     mips)
3276         check_64bit mips mips64 '_MIPS_SIM > 1'
3277         spic=$shared
3278     ;;
3279     parisc)
3280         check_64bit parisc parisc64 'sizeof(void *) > 4'
3281         spic=$shared
3282     ;;
3283     ppc)
3284         check_64bit ppc ppc64 'sizeof(void *) > 4'
3285         spic=$shared
3286     ;;
3287     s390)
3288         check_64bit s390 s390x 'sizeof(void *) > 4'
3289         spic=$shared
3290     ;;
3291     sparc)
3292         check_64bit sparc sparc64 'sizeof(void *) > 4'
3293         spic=$shared
3294     ;;
3295     x86)
3296         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3297         if test "$subarch" = "x86_64"; then
3298             spic=$shared
3299         fi
3300     ;;
3301 esac
3302
3303 enable $subarch
3304 enabled spic && enable_weak pic
3305
3306 # OS specific
3307 case $target_os in
3308     aix)
3309         SHFLAGS=-shared
3310         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3311         enabled shared && add_ldflags -Wl,-brtl
3312         ;;
3313     haiku)
3314         prefix_default="/boot/common"
3315         network_extralibs="-lnetwork"
3316         host_libs=
3317         ;;
3318     sunos)
3319         SHFLAGS='-shared -Wl,-h,$$(@F)'
3320         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3321         network_extralibs="-lsocket -lnsl"
3322         # When using suncc to build, the Solaris linker will mark
3323         # an executable with each instruction set encountered by
3324         # the Solaris assembler.  As our libraries contain their own
3325         # guards for processor-specific code, instead suppress
3326         # generation of the HWCAPS ELF section on Solaris x86 only.
3327         enabled_all suncc x86 &&
3328             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3329             add_ldflags -Wl,-M,mapfile
3330         nm_default='nm -P -g'
3331         ;;
3332     netbsd)
3333         disable symver
3334         oss_indev_extralibs="-lossaudio"
3335         oss_outdev_extralibs="-lossaudio"
3336         ;;
3337     openbsd|bitrig)
3338         disable symver
3339         SHFLAGS='-shared'
3340         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3341         SLIB_INSTALL_LINKS=
3342         oss_indev_extralibs="-lossaudio"
3343         oss_outdev_extralibs="-lossaudio"
3344         ;;
3345     dragonfly)
3346         disable symver
3347         ;;
3348     freebsd)
3349         ;;
3350     bsd/os)
3351         add_extralibs -lpoll -lgnugetopt
3352         ;;
3353     darwin)
3354         gas="gas-preprocessor.pl $cc"
3355         enabled ppc && add_asflags -force_cpusubtype_ALL
3356         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3357         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3358         add_ldflags -Wl,-dynamic,-search_paths_first
3359         SLIBSUF=".dylib"
3360         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3361         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3362         objformat="macho"
3363         enabled x86_64 && objformat="macho64"
3364         enabled_any pic shared ||
3365             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3366         ;;
3367     mingw32*)
3368         if test $target_os = "mingw32ce"; then
3369             disable network
3370         else
3371             target_os=mingw32
3372         fi
3373         LIBTARGET=i386
3374         if enabled x86_64; then
3375             LIBTARGET="i386:x86-64"
3376         elif enabled arm; then
3377             LIBTARGET=arm-wince
3378         fi
3379         check_ldflags -Wl,--nxcompat
3380         check_ldflags -Wl,--dynamicbase
3381         shlibdir_default="$bindir_default"
3382         SLIBPREF=""
3383         SLIBSUF=".dll"
3384         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3385         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3386         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3387         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3388         SLIB_INSTALL_LINKS=
3389         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3390         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3391         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3392         objformat="win32"
3393         dlltool="${cross_prefix}dlltool"
3394         ranlib=:
3395         enable dos_paths
3396         ;;
3397     win32|win64)
3398         disable symver
3399         if enabled shared; then
3400             # Link to the import library instead of the normal static library
3401             # for shared libs.
3402             LD_LIB='%.lib'
3403             # Cannot build both shared and static libs with MSVC or icl.
3404             disable static
3405         fi
3406         shlibdir_default="$bindir_default"
3407         SLIBPREF=""
3408         SLIBSUF=".dll"
3409         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3410         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3411         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3412         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3413         SLIB_INSTALL_LINKS=
3414         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3415         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3416         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3417         objformat="win32"
3418         ranlib=:
3419         enable dos_paths
3420         ;;
3421     cygwin*)
3422         target_os=cygwin
3423         shlibdir_default="$bindir_default"
3424         SLIBPREF="cyg"
3425         SLIBSUF=".dll"
3426         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3427         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3428         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3429         SLIB_INSTALL_LINKS=
3430         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3431         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3432         objformat="win32"
3433         enable dos_paths
3434         ;;
3435     *-dos|freedos|opendos)
3436         network_extralibs="-lsocket"
3437         objformat="coff"
3438         enable dos_paths
3439         add_cppflags -U__STRICT_ANSI__
3440         ;;
3441     linux)
3442         enable dv1394
3443         ;;
3444     irix*)
3445         target_os=irix
3446         ranlib="echo ignoring ranlib"
3447         ;;
3448     os/2*)
3449         ln_s="cp -f"
3450         objformat="aout"
3451         add_cppflags -D_GNU_SOURCE
3452         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3453         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3454         LIBSUF="_s.a"
3455         SLIBPREF=""
3456         SLIBSUF=".dll"
3457         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3458         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3459         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3460             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3461             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3462             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3463             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3464             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3465         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3466             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3467         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3468         enable dos_paths
3469         ;;
3470     gnu/kfreebsd)
3471         add_cppflags -D_BSD_SOURCE
3472         ;;
3473     gnu)
3474         ;;
3475     qnx)
3476         add_cppflags -D_QNX_SOURCE
3477         network_extralibs="-lsocket"
3478         ;;
3479     symbian)
3480         SLIBSUF=".dll"
3481         enable dos_paths
3482         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3483         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3484         add_ldflags -Wl,--target1-abs,--no-undefined \
3485                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3486                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3487         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3488                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3489                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3490         ;;
3491     osf1)
3492         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3493         ;;
3494     minix)
3495         ;;
3496     plan9)
3497         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3498                      -D_REENTRANT_SOURCE        \
3499                      -D_RESEARCH_SOURCE         \
3500                      -DFD_SETSIZE=96            \
3501                      -DHAVE_SOCK_OPTS
3502         add_compat strtod.o strtod=avpriv_strtod
3503         network_extralibs='-lbsd'
3504         exeobjs=compat/plan9/main.o
3505         disable avserver
3506         cp_f='cp'
3507         ;;
3508     none)
3509         ;;
3510     *)
3511         die "Unknown OS '$target_os'."
3512         ;;
3513 esac
3514
3515 # determine libc flavour
3516
3517 probe_libc(){
3518     pfx=$1
3519     pfx_no_=${pfx%_}
3520     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3521     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3522         eval ${pfx}libc_type=uclibc
3523         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3524     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3525         eval ${pfx}libc_type=glibc
3526         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3527     # MinGW headers can be installed on Cygwin, so check for newlib first.
3528     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3529         eval ${pfx}libc_type=newlib
3530         add_${pfx}cppflags -U__STRICT_ANSI__
3531     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3532     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3533         eval ${pfx}libc_type=mingw64
3534         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3535         eval test \$${pfx_no_}cc_type = "gcc" &&
3536             add_${pfx}cppflags -D__printf__=__gnu_printf__
3537     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3538          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3539         eval ${pfx}libc_type=mingw32
3540         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3541             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3542             die "ERROR: MinGW32 runtime version must be >= 3.15."
3543         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3544         eval test \$${pfx_no_}cc_type = "gcc" &&
3545             add_${pfx}cppflags -D__printf__=__gnu_printf__
3546     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3547         eval ${pfx}libc_type=msvcrt
3548         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3549         # 0x601 by default unless something else is set by the user.
3550         # This can easily lead to us detecting functions only present
3551         # in such new versions and producing binaries requiring windows 7.0.
3552         # Therefore explicitly set the default to XP unless the user has
3553         # set something else on the command line.
3554         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3555             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3556     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3557         eval ${pfx}libc_type=klibc
3558     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3559         eval ${pfx}libc_type=bionic
3560     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3561         eval ${pfx}libc_type=solaris
3562         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3563     fi
3564 }
3565
3566 probe_libc
3567 test -n "$libc_type" && enable libc_$libc_type
3568 probe_libc host_
3569 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3570
3571 case $libc_type in
3572     bionic)
3573         add_compat strtod.o strtod=avpriv_strtod
3574         ;;
3575     msvcrt)
3576         add_compat strtod.o strtod=avpriv_strtod
3577         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3578                                      _snprintf=avpriv_snprintf  \
3579                                      vsnprintf=avpriv_vsnprintf
3580         ;;
3581 esac
3582
3583 # hacks for compiler/libc/os combinations
3584
3585 if enabled_all tms470 libc_glibc; then
3586     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3587     add_cppflags -D__USER_LABEL_PREFIX__=
3588     add_cppflags -D__builtin_memset=memset
3589     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3590     add_cflags   -pds=48    # incompatible redefinition of macro
3591 fi
3592
3593 if enabled_all ccc libc_glibc; then
3594     add_ldflags -Wl,-z,now  # calls to libots crash without this
3595 fi
3596
3597 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3598     add_cppflags '-I\$(SRC_PATH)/compat/float'
3599
3600 esc(){
3601     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3602 }
3603
3604 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3605
3606 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3607
3608 set_default $PATHS_LIST
3609 set_default nm
3610
3611 # we need to build at least one lib type
3612 if ! enabled_any static shared; then
3613     cat <<EOF
3614 At least one library type must be built.
3615 Specify --enable-static to build the static libraries or --enable-shared to
3616 build the shared libraries as well. To only build the shared libraries specify
3617 --disable-static in addition to --enable-shared.
3618 EOF
3619     exit 1;
3620 fi
3621
3622 die_license_disabled() {
3623     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3624 }
3625
3626 die_license_disabled gpl libcdio
3627 die_license_disabled gpl libx264
3628 die_license_disabled gpl libx265
3629 die_license_disabled gpl libxavs
3630 die_license_disabled gpl libxvid
3631 die_license_disabled gpl x11grab
3632
3633 die_license_disabled nonfree libfaac
3634 die_license_disabled nonfree libfdk_aac
3635 die_license_disabled nonfree openssl
3636
3637 die_license_disabled version3 libopencore_amrnb
3638 die_license_disabled version3 libopencore_amrwb
3639 die_license_disabled version3 libvo_aacenc
3640 die_license_disabled version3 libvo_amrwbenc
3641
3642 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3643
3644 disabled optimizations || check_cflags -fomit-frame-pointer
3645
3646 enable_weak_pic() {
3647     disabled pic && return
3648     enable pic
3649     add_cppflags -DPIC
3650     case "$target_os" in
3651     mingw*|cygwin*)
3652         ;;
3653     *)
3654         add_cflags -fPIC
3655         ;;
3656     esac
3657     add_asflags  -fPIC
3658 }
3659
3660 enabled pic && enable_weak_pic
3661
3662 check_cc <<EOF || die "Symbol mangling check failed."
3663 int ff_extern;
3664 EOF
3665 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3666 extern_prefix=${sym%%ff_extern*}
3667
3668 check_cc <<EOF && enable_weak inline_asm
3669 void foo(void) { __asm__ volatile ("" ::); }
3670 EOF
3671
3672 _restrict=
3673 for restrict_keyword in restrict __restrict__ __restrict; do
3674     check_cc <<EOF && _restrict=$restrict_keyword && break
3675 void foo(char * $restrict_keyword p);
3676 EOF
3677 done
3678
3679 check_cc <<EOF && enable pragma_deprecated
3680 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3681 EOF
3682
3683 check_cc <<EOF && enable attribute_packed
3684 struct { int x; } __attribute__((packed)) x;
3685 EOF
3686
3687 check_cc <<EOF && enable attribute_may_alias
3688 union { int x; } __attribute__((may_alias)) x;
3689 EOF
3690
3691 check_cc <<EOF || die "endian test failed"
3692 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3693 EOF
3694 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3695
3696 check_inline_asm inline_asm_labels '"1:\n"'
3697
3698 if enabled aarch64; then
3699     # internal assembler in clang 3.3 does not support this instruction
3700     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3701     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3702
3703     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3704
3705 elif enabled alpha; then
3706
3707     check_cflags -mieee
3708
3709 elif enabled arm; then
3710
3711     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3712     enabled thumb && check_cflags -mthumb || check_cflags -marm
3713     nogas=die
3714
3715     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3716         enable vfp_args
3717     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3718         case "${cross_prefix:-$cc}" in
3719             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3720             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3721 __asm__ (".eabi_attribute 28, 1");
3722 int main(void) { return 0; }
3723 EOF
3724         esac
3725         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3726     fi
3727
3728     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3729     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3730     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3731     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3732     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3733     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3734
3735     [ $target_os = linux ] ||
3736         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3737             $ARCH_EXT_LIST_ARM
3738
3739     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3740
3741     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3742
3743 elif enabled mips; then
3744
3745     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3746
3747 elif enabled parisc; then
3748
3749     if enabled gcc; then
3750         case $($cc -dumpversion) in
3751             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3752         esac
3753     fi
3754
3755 elif enabled ppc; then
3756
3757     enable local_aligned_8 local_aligned_16
3758
3759     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3760     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3761     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3762     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3763
3764     # AltiVec flags: The FSF version of GCC differs from the Apple version
3765     if enabled altivec; then
3766         nogas=warn
3767         check_cflags -maltivec -mabi=altivec &&
3768         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3769         check_cflags -faltivec
3770
3771         # check if our compiler supports Motorola AltiVec C API
3772         check_cc <<EOF || disable altivec
3773 $inc_altivec_h
3774 int main(void) {
3775     vector signed int v1 = (vector signed int) { 0 };
3776     vector signed int v2 = (vector signed int) { 1 };
3777     v1 = vec_add(v1, v2);
3778     return 0;
3779 }
3780 EOF
3781
3782         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3783     fi
3784
3785 elif enabled x86; then
3786
3787     check_builtin rdtsc    intrin.h   "__rdtsc()"
3788     check_builtin mm_empty mmintrin.h "_mm_empty()"
3789
3790     enable local_aligned_8 local_aligned_16
3791
3792     # check whether EBP is available on x86
3793     # As 'i' is stored on the stack, this program will crash
3794     # if the base pointer is used to access it because the
3795     # base pointer is cleared in the inline assembly code.
3796     check_exec_crash <<EOF && enable ebp_available
3797 volatile int i=0;
3798 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3799 return i;
3800 EOF
3801
3802     # check whether EBX is available on x86
3803     check_inline_asm ebx_available '""::"b"(0)' &&
3804         check_inline_asm ebx_available '"":::"%ebx"'
3805
3806     # check whether xmm clobbers are supported
3807     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3808
3809     # check whether binutils is new enough to compile SSSE3/MMXEXT
3810     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3811     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3812
3813     if ! disabled_any asm mmx yasm; then
3814         if check_cmd $yasmexe --version; then
3815             enabled x86_64 && yasm_extra="-m amd64"
3816             yasm_debug="-g dwarf2"
3817         elif check_cmd nasm -v; then
3818             yasmexe=nasm
3819             yasm_debug="-g -F dwarf"
3820             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3821         fi
3822
3823         YASMFLAGS="-f $objformat $yasm_extra"
3824         enabled pic               && append YASMFLAGS "-DPIC"
3825         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3826         case "$objformat" in
3827             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3828         esac
3829
3830         check_yasm "movbe ecx, [5]" && enable yasm ||
3831             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3832         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3833         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3834         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3835         check_yasm "CPU amdnop" || disable cpunop
3836     fi
3837
3838     case "$cpu" in
3839         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3840             disable fast_clz
3841         ;;
3842     esac
3843
3844 fi
3845
3846 if enabled asm; then
3847     as=${gas:=$as}
3848     check_as <<EOF && enable gnu_as || \
3849         $nogas "GNU assembler not found, install gas-preprocessor"
3850 .macro m n
3851 \n: .int 0
3852 .endm
3853 m x
3854 EOF
3855 fi
3856
3857 check_ldflags -Wl,--as-needed
3858
3859 if check_func dlopen; then
3860     ldl=
3861 elif check_func dlopen -ldl; then
3862     ldl=-ldl
3863 fi
3864
3865 if ! disabled network; then
3866     check_func getaddrinfo $network_extralibs
3867     check_func getservbyport $network_extralibs
3868     check_func inet_aton $network_extralibs
3869
3870     check_type netdb.h "struct addrinfo"
3871     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3872     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3873     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3874     check_type poll.h "struct pollfd"
3875     check_type netinet/sctp.h "struct sctp_event_subscribe"
3876     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3877     check_type netinet/in.h "struct sockaddr_in6"
3878     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3879     check_type "sys/types.h sys/socket.h" socklen_t
3880
3881     # Prefer arpa/inet.h over winsock2
3882     if check_header arpa/inet.h ; then
3883         check_func closesocket
3884     elif check_header winsock2.h ; then
3885         check_func_headers winsock2.h closesocket -lws2 &&
3886             network_extralibs="-lws2" ||
3887         { check_func_headers winsock2.h closesocket -lws2_32 &&
3888             network_extralibs="-lws2_32"; } || disable winsock2_h network
3889         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3890
3891         check_type ws2tcpip.h socklen_t
3892         check_type ws2tcpip.h "struct addrinfo"
3893         check_type ws2tcpip.h "struct group_source_req"
3894         check_type ws2tcpip.h "struct ip_mreq_source"
3895         check_type ws2tcpip.h "struct ipv6_mreq"
3896         check_type winsock2.h "struct pollfd"
3897         check_struct winsock2.h "struct sockaddr" sa_len
3898         check_type ws2tcpip.h "struct sockaddr_in6"
3899         check_type ws2tcpip.h "struct sockaddr_storage"
3900     else
3901         disable network
3902     fi
3903 fi
3904
3905 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3906 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3907 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3908 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3909
3910 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3911 check_func  ${malloc_prefix}memalign            && enable memalign
3912 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3913
3914 check_func  fcntl
3915 check_func  fork
3916 check_func  gethrtime
3917 check_func  getopt
3918 check_func  getrusage
3919 check_func  gettimeofday
3920 check_func  isatty
3921 check_func  localtime_r
3922 check_func  mach_absolute_time
3923 check_func  mkstemp
3924 check_func  mmap
3925 check_func  mprotect
3926 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3927 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3928 check_func  sched_getaffinity
3929 check_func  setrlimit
3930 check_func  strerror_r
3931 check_func  strptime
3932 check_func  sysconf
3933 check_func  sysctl
3934 check_func  usleep
3935
3936 check_func_headers io.h setmode
3937 check_func_headers stdlib.h getenv
3938
3939 check_func_headers windows.h GetProcessAffinityMask
3940 check_func_headers windows.h GetProcessTimes
3941 check_func_headers windows.h GetSystemTimeAsFileTime
3942 check_func_headers windows.h MapViewOfFile
3943 check_func_headers windows.h SetConsoleTextAttribute
3944 check_func_headers windows.h Sleep
3945 check_func_headers windows.h VirtualAlloc
3946
3947 check_header direct.h
3948 check_header dlfcn.h
3949 check_header dxva.h
3950 check_header dxva2api.h
3951 check_header io.h
3952 check_header mach/mach_time.h
3953 check_header malloc.h
3954 check_header poll.h
3955 check_header sys/mman.h
3956 check_header sys/param.h
3957 check_header sys/resource.h
3958 check_header sys/select.h
3959 check_header sys/time.h
3960 check_header sys/un.h
3961 check_header unistd.h
3962 check_header vdpau/vdpau.h
3963 check_header vdpau/vdpau_x11.h
3964 check_header VideoDecodeAcceleration/VDADecoder.h
3965 check_header windows.h
3966 check_header X11/extensions/XvMClib.h
3967
3968 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3969 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3970 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3971
3972 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3973
3974 if ! disabled w32threads && ! enabled pthreads; then
3975     check_func_headers "windows.h process.h" _beginthreadex &&
3976         enable w32threads || disable w32threads
3977 fi
3978
3979 # check for some common methods of building with pthread support
3980 # do this before the optional library checks as some of them require pthreads
3981 if ! disabled pthreads && ! enabled w32threads; then
3982     enable pthreads
3983     if check_func pthread_join -pthread; then
3984         add_cflags -pthread
3985         add_extralibs -pthread
3986     elif check_func pthread_join -pthreads; then
3987         add_cflags -pthreads
3988         add_extralibs -pthreads
3989     elif check_func pthread_join -lpthreadGC2; then
3990         add_extralibs -lpthreadGC2
3991     elif check_lib pthread.h pthread_join -lpthread; then
3992         :
3993     elif ! check_func pthread_join; then
3994         disable pthreads
3995     fi
3996 fi
3997
3998 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3999 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4000
4001 check_lib math.h sin -lm && LIBM="-lm"
4002 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4003
4004 atan2f_args=2
4005 ldexpf_args=2
4006 powf_args=2
4007
4008 for func in $MATH_FUNCS; do
4009     eval check_mathfunc $func \${${func}_args:-1}
4010 done
4011
4012 # these are off by default, so fail if requested and not available
4013 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4014                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4015                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4016 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4017 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4018 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4019 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4020 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4021 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4022                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4023                                done || die "ERROR: libgsm not found"; }
4024 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4025 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4026 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4027 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4028 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4029 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4030                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4031 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4032 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4033 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4034 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4035 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4036 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4037 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4038 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4039 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4040 enabled libvpx            && {
4041     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4042                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4043     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4044                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4045     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4046     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4047 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4048 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4049 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4050                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4051                                die "ERROR: libx264 version must be >= 0.118."; }
4052 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4053                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4054                                die "ERROR: libx265 version must be >= 13."; }
4055 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4056 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4057 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4058                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4059                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4060                                die "ERROR: openssl not found"; }
4061
4062 if enabled gnutls; then
4063     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4064     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4065 fi
4066
4067 # libdc1394 check
4068 if enabled libdc1394; then
4069     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4070         enable libdc1394_2; } ||
4071     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4072         enable libdc1394_1; } ||
4073     die "ERROR: No version of libdc1394 found "
4074 fi
4075
4076 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4077     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4078     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4079     enable sdl
4080 fi
4081
4082 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4083 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4084
4085 check_header linux/fb.h
4086 check_header linux/videodev2.h
4087 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4088
4089 check_header sys/videoio.h
4090
4091 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4092 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4093 # w32api 3.12 had it defined wrong
4094 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4095
4096 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4097 { check_header dev/bktr/ioctl_meteor.h &&
4098   check_header dev/bktr/ioctl_bt848.h; } ||
4099 { check_header machine/ioctl_meteor.h &&
4100   check_header machine/ioctl_bt848.h; } ||
4101 { check_header dev/video/meteor/ioctl_meteor.h &&
4102   check_header dev/video/bktr/ioctl_bt848.h; } ||
4103 check_header dev/ic/bt8xx.h
4104
4105 check_header sndio.h
4106 check_header sys/soundcard.h
4107 check_header soundcard.h
4108
4109 enabled_any alsa_indev alsa_outdev &&
4110     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4111
4112 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4113     check_func jack_port_get_latency_range -ljack
4114
4115 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4116
4117 if enabled libcdio; then
4118     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4119     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4120 fi
4121
4122 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4123
4124 enabled x11grab                                           &&
4125 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4126 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4127 { enabled xlib || die "ERROR: Xlib not found"; }
4128
4129 enabled vdpau &&
4130     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4131     disable vdpau
4132
4133 enabled vdpau && enabled xlib &&
4134     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4135     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4136     enable vdpau_x11
4137
4138 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4139
4140 # add some useful compiler flags if supported
4141 check_cflags -Wdeclaration-after-statement
4142 check_cflags -Wall
4143 check_cflags -Wdisabled-optimization
4144 check_cflags -Wpointer-arith
4145 check_cflags -Wredundant-decls
4146 check_cflags -Wcast-qual
4147 check_cflags -Wwrite-strings
4148 check_cflags -Wtype-limits
4149 check_cflags -Wundef
4150 check_cflags -Wmissing-prototypes
4151 check_cflags -Wstrict-prototypes
4152 enabled extra_warnings && check_cflags -Winline
4153
4154 check_disable_warning(){
4155     warning_flag=-W${1#-Wno-}
4156     test_cflags $warning_flag && add_cflags $1
4157 }
4158
4159 check_disable_warning -Wno-parentheses
4160 check_disable_warning -Wno-switch
4161 check_disable_warning -Wno-format-zero-length
4162 check_disable_warning -Wno-pointer-sign
4163
4164 # add some linker flags
4165 check_ldflags -Wl,--warn-common
4166 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4167 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4168
4169 # add some strip flags
4170 # -wN '..@*' is more selective than -x, but not available everywhere.
4171 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4172
4173 enabled neon_clobber_test &&
4174     check_ldflags -Wl,--wrap,avcodec_open2              \
4175                   -Wl,--wrap,avcodec_decode_audio4      \
4176                   -Wl,--wrap,avcodec_decode_video2      \
4177                   -Wl,--wrap,avcodec_decode_subtitle2   \
4178                   -Wl,--wrap,avcodec_encode_audio2      \
4179                   -Wl,--wrap,avcodec_encode_video2      \
4180                   -Wl,--wrap,avcodec_encode_subtitle    \
4181                   -Wl,--wrap,avresample_convert ||
4182     disable neon_clobber_test
4183
4184 enabled xmm_clobber_test &&
4185     check_ldflags -Wl,--wrap,avcodec_open2              \
4186                   -Wl,--wrap,avcodec_decode_audio4      \
4187                   -Wl,--wrap,avcodec_decode_video2      \
4188                   -Wl,--wrap,avcodec_decode_subtitle2   \
4189                   -Wl,--wrap,avcodec_encode_audio2      \
4190                   -Wl,--wrap,avcodec_encode_video2      \
4191                   -Wl,--wrap,avcodec_encode_subtitle    \
4192                   -Wl,--wrap,avresample_convert         \
4193                   -Wl,--wrap,sws_scale ||
4194     disable xmm_clobber_test
4195
4196 echo "X{};" > $TMPV
4197 if test_ldflags -Wl,--version-script,$TMPV; then
4198     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4199     check_cc <<EOF && enable symver_asm_label
4200 void ff_foo(void) __asm__ ("av_foo@VERSION");
4201 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4202 EOF
4203     check_cc <<EOF && enable symver_gnu_asm
4204 __asm__(".symver ff_foo,av_foo@VERSION");
4205 void ff_foo(void) {}
4206 EOF
4207 fi
4208
4209 if [ -z "$optflags" ]; then
4210     if enabled small; then
4211         optflags=$cflags_size
4212     elif enabled optimizations; then
4213         optflags=$cflags_speed
4214     else
4215         optflags=$cflags_noopt
4216     fi
4217 fi
4218
4219 check_optflags(){
4220     check_cflags "$@"
4221     enabled lto && check_ldflags "$@"
4222 }
4223
4224
4225 if enabled lto; then
4226     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4227     check_cflags  -flto
4228     check_ldflags -flto $cpuflags
4229 fi
4230
4231 check_optflags $optflags
4232 check_optflags -fno-math-errno
4233 check_optflags -fno-signed-zeros
4234
4235 if enabled icc; then
4236     # Just warnings, no remarks
4237     check_cflags -w1
4238     # -wd: Disable following warnings
4239     # 144, 167, 556: -Wno-pointer-sign
4240     # 1292: attribute "foo" ignored
4241     # 1419: external declaration in primary source file
4242     # 10006: ignoring unknown option -fno-signed-zeros
4243     # 10148: ignoring unknown option -Wno-parentheses
4244     # 10156: ignoring option '-W'; no argument required
4245     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4246     # 11030: Warning unknown option --as-needed
4247     # 10156: ignoring option '-export'; no argument required
4248     check_ldflags -wd10156,11030
4249     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4250     enable ebp_available
4251     if enabled x86_32; then
4252         icc_version=$($cc -dumpversion)
4253         test ${icc_version%%.*} -ge 11 &&
4254             check_cflags -falign-stack=maintain-16-byte ||
4255             disable aligned_stack
4256     fi
4257 elif enabled ccc; then
4258     # disable some annoying warnings
4259     add_cflags -msg_disable bitnotint
4260     add_cflags -msg_disable mixfuncvoid
4261     add_cflags -msg_disable nonstandcast
4262     add_cflags -msg_disable unsupieee
4263 elif enabled gcc; then
4264     check_optflags -fno-tree-vectorize
4265     check_cflags -Werror=implicit-function-declaration
4266     check_cflags -Werror=missing-prototypes
4267     check_cflags -Werror=return-type
4268     check_cflags -Werror=declaration-after-statement
4269     check_cflags -Werror=vla
4270     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4271 elif enabled llvm_gcc; then
4272     check_cflags -mllvm -stack-alignment=16
4273 elif enabled clang; then
4274     check_cflags -mllvm -stack-alignment=16
4275     check_cflags -Qunused-arguments
4276     check_cflags -Werror=implicit-function-declaration
4277     check_cflags -Werror=missing-prototypes
4278     check_cflags -Werror=return-type
4279 elif enabled cparser; then
4280     add_cflags -Wno-missing-variable-declarations
4281     add_cflags -Wno-empty-statement
4282 elif enabled armcc; then
4283     # 2523: use of inline assembler is deprecated
4284     add_cflags -W${armcc_opt},--diag_suppress=2523
4285     add_cflags -W${armcc_opt},--diag_suppress=1207
4286     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4287     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4288     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4289     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4290 elif enabled tms470; then
4291     add_cflags -pds=824 -pds=837
4292     disable inline_asm
4293 elif enabled pathscale; then
4294     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4295 elif enabled_any msvc icl; then
4296     enabled x86_32 && disable aligned_stack
4297     enabled_all x86_32 debug && add_cflags -Oy-
4298     enabled debug && add_ldflags -debug
4299     enable pragma_deprecated
4300     if enabled icl; then
4301         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4302         # (correctly) on icl 13.x.
4303         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4304             add_cflags -Qansi-alias
4305         # icl will pass the inline asm tests but inline asm is currently
4306         # not supported (build will fail)
4307         disable inline_asm
4308     fi
4309 fi
4310
4311 case $as_type in
4312     clang)
4313         add_asflags -Qunused-arguments
4314     ;;
4315 esac
4316
4317 case $ld_type in
4318     clang)
4319         check_ldflags -Qunused-arguments
4320     ;;
4321 esac
4322
4323 case $target_os in
4324     osf1)
4325         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4326     ;;
4327     plan9)
4328         add_cppflags -Dmain=plan9_main
4329     ;;
4330 esac
4331
4332 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4333
4334 check_deps $CONFIG_LIST       \
4335            $CONFIG_EXTRA      \
4336            $HAVE_LIST         \
4337            $ALL_COMPONENTS    \
4338
4339 ! enabled_any memalign posix_memalign aligned_malloc &&
4340     enabled_any $need_memalign && enable memalign_hack
4341
4342 for thread in $THREADS_LIST; do
4343     if enabled $thread; then
4344         test -n "$thread_type" &&
4345             die "ERROR: Only one thread type must be selected." ||
4346             thread_type="$thread"
4347     fi
4348 done
4349
4350 echo "install prefix            $prefix"
4351 echo "source path               $source_path"
4352 echo "C compiler                $cc"
4353 echo "C library                 $libc_type"
4354 if test "$host_cc" != "$cc"; then
4355     echo "host C compiler           $host_cc"
4356     echo "host C library            $host_libc_type"
4357 fi
4358 echo "ARCH                      $arch ($cpu)"
4359 if test "$build_suffix" != ""; then
4360     echo "build suffix              $build_suffix"
4361 fi
4362 if test "$extra_version" != ""; then
4363     echo "version string suffix     $extra_version"
4364 fi
4365 echo "big-endian                ${bigendian-no}"
4366 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4367 if enabled x86; then
4368     echo "${yasmexe}                      ${yasm-no}"
4369     echo "MMX enabled               ${mmx-no}"
4370     echo "MMXEXT enabled            ${mmxext-no}"
4371     echo "3DNow! enabled            ${amd3dnow-no}"
4372     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4373     echo "SSE enabled               ${sse-no}"
4374     echo "SSSE3 enabled             ${ssse3-no}"
4375     echo "AVX enabled               ${avx-no}"
4376     echo "XOP enabled               ${xop-no}"
4377     echo "FMA3 enabled              ${fma3-no}"
4378     echo "FMA4 enabled              ${fma4-no}"
4379     echo "i686 features enabled     ${i686-no}"
4380     echo "CMOV is fast              ${fast_cmov-no}"
4381     echo "EBX available             ${ebx_available-no}"
4382     echo "EBP available             ${ebp_available-no}"
4383 fi
4384 if enabled aarch64; then
4385     echo "NEON enabled              ${neon-no}"
4386     echo "VFP enabled               ${vfp-no}"
4387 fi
4388 if enabled arm; then
4389     echo "ARMv5TE enabled           ${armv5te-no}"
4390     echo "ARMv6 enabled             ${armv6-no}"
4391     echo "ARMv6T2 enabled           ${armv6t2-no}"
4392     echo "VFP enabled               ${vfp-no}"
4393     echo "NEON enabled              ${neon-no}"
4394 fi
4395 if enabled ppc; then
4396     echo "AltiVec enabled           ${altivec-no}"
4397     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4398     echo "dcbzl available           ${dcbzl-no}"
4399 fi
4400 echo "debug symbols             ${debug-no}"
4401 echo "optimize for size         ${small-no}"
4402 echo "optimizations             ${optimizations-no}"
4403 echo "static                    ${static-no}"
4404 echo "shared                    ${shared-no}"
4405 echo "new filter support        ${avfilter-no}"
4406 echo "network support           ${network-no}"
4407 echo "threading support         ${thread_type-no}"
4408 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4409 echo "SDL support               ${sdl-no}"
4410 test -n "$random_seed" &&
4411     echo "random seed               ${random_seed}"
4412 echo
4413
4414 echo "External libraries:"
4415 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4416 echo
4417
4418 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4419     echo "Enabled ${type}s:"
4420     eval list=\$$(toupper $type)_LIST
4421     print_enabled '_*' $list | print_3_columns
4422     echo
4423 done
4424
4425 license="LGPL version 2.1 or later"
4426 if enabled nonfree; then
4427     license="nonfree and unredistributable"
4428 elif enabled gplv3; then
4429     license="GPL version 3 or later"
4430 elif enabled lgplv3; then
4431     license="LGPL version 3 or later"
4432 elif enabled gpl; then
4433     license="GPL version 2 or later"
4434 fi
4435
4436 echo "License: $license"
4437
4438 echo "Creating config.mak and config.h..."
4439
4440 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4441
4442 config_files="$TMPH config.mak"
4443
4444 cat > config.mak <<EOF
4445 # Automatically generated by configure - do not modify!
4446 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4447 prefix=$prefix
4448 LIBDIR=\$(DESTDIR)$libdir
4449 SHLIBDIR=\$(DESTDIR)$shlibdir
4450 INCDIR=\$(DESTDIR)$incdir
4451 BINDIR=\$(DESTDIR)$bindir
4452 DATADIR=\$(DESTDIR)$datadir
4453 DOCDIR=\$(DESTDIR)$docdir
4454 MANDIR=\$(DESTDIR)$mandir
4455 SRC_PATH=$source_path
4456 CC_IDENT=$cc_ident
4457 ARCH=$arch
4458 CC=$cc
4459 AS=$as
4460 LD=$ld
4461 DEPCC=$dep_cc
4462 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4463 DEPAS=$as
4464 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4465 YASM=$yasmexe
4466 DEPYASM=$yasmexe
4467 AR=$ar
4468 ARFLAGS=$arflags
4469 AR_O=$ar_o
4470 RANLIB=$ranlib
4471 STRIP=$strip
4472 LN_S=$ln_s
4473 CPPFLAGS=$CPPFLAGS
4474 CFLAGS=$CFLAGS
4475 ASFLAGS=$ASFLAGS
4476 AS_C=$AS_C
4477 AS_O=$AS_O
4478 CC_C=$CC_C
4479 CC_E=$CC_E
4480 CC_O=$CC_O
4481 LD_O=$LD_O
4482 LD_LIB=$LD_LIB
4483 LD_PATH=$LD_PATH
4484 DLLTOOL=$dlltool
4485 LDFLAGS=$LDFLAGS
4486 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4487 STRIPFLAGS=$STRIPFLAGS
4488 YASMFLAGS=$YASMFLAGS
4489 BUILDSUF=$build_suffix
4490 FULLNAME=$FULLNAME
4491 LIBPREF=$LIBPREF
4492 LIBSUF=$LIBSUF
4493 LIBNAME=$LIBNAME
4494 SLIBPREF=$SLIBPREF
4495 SLIBSUF=$SLIBSUF
4496 EXESUF=$EXESUF
4497 EXTRA_VERSION=$extra_version
4498 CCDEP=$CCDEP
4499 CCDEP_FLAGS=$CCDEP_FLAGS
4500 ASDEP=$ASDEP
4501 ASDEP_FLAGS=$ASDEP_FLAGS
4502 CC_DEPFLAGS=$CC_DEPFLAGS
4503 AS_DEPFLAGS=$AS_DEPFLAGS
4504 HOSTCC=$host_cc
4505 HOSTLD=$host_ld
4506 HOSTCFLAGS=$host_cflags
4507 HOSTCPPFLAGS=$host_cppflags
4508 HOSTEXESUF=$HOSTEXESUF
4509 HOSTLDFLAGS=$host_ldflags
4510 HOSTLIBS=$host_libs
4511 DEPHOSTCC=$host_cc
4512 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4513 HOSTCCDEP=$HOSTCCDEP
4514 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4515 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4516 HOSTCC_C=$HOSTCC_C
4517 HOSTCC_O=$HOSTCC_O
4518 HOSTLD_O=$HOSTLD_O
4519 TARGET_EXEC=$target_exec $target_exec_args
4520 TARGET_PATH=$target_path
4521 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4522 CFLAGS-avplay=$sdl_cflags
4523 ZLIB=$($ldflags_filter -lz)
4524 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4525 EXTRALIBS=$extralibs
4526 COMPAT_OBJS=$compat_objs
4527 EXEOBJS=$exeobjs
4528 INSTALL=install
4529 LIBTARGET=${LIBTARGET}
4530 SLIBNAME=${SLIBNAME}
4531 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4532 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4533 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4534 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4535 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4536 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4537 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4538 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4539 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4540 EOF
4541
4542 get_version(){
4543     lcname=lib${1}
4544     name=$(toupper $lcname)
4545     file=$source_path/$lcname/version.h
4546     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4547     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4548     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4549     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4550     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4551 }
4552
4553 map 'get_version $v' $LIBRARY_LIST
4554
4555 print_program_libs(){
4556     eval "program_libs=\$${1}_libs"
4557     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4558 }
4559
4560 map 'print_program_libs $v' $PROGRAM_LIST
4561
4562 cat > $TMPH <<EOF
4563 /* Automatically generated by configure - do not modify! */
4564 #ifndef LIBAV_CONFIG_H
4565 #define LIBAV_CONFIG_H
4566 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4567 #define LIBAV_LICENSE "$(c_escape $license)"
4568 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4569 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4570 #define restrict $_restrict
4571 #define EXTERN_PREFIX "${extern_prefix}"
4572 #define EXTERN_ASM ${extern_prefix}
4573 #define SLIBSUF "$SLIBSUF"
4574 EOF
4575
4576 test -n "$malloc_prefix" &&
4577     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4578
4579 if enabled yasm; then
4580     append config_files $TMPASM
4581     printf '' >$TMPASM
4582 fi
4583
4584 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4585
4586 print_config ARCH_   "$config_files" $ARCH_LIST
4587 print_config HAVE_   "$config_files" $HAVE_LIST
4588 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4589                                      $CONFIG_EXTRA      \
4590                                      $ALL_COMPONENTS    \
4591
4592 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4593
4594 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4595 cp_if_changed $TMPH config.h
4596 touch .config
4597
4598 enabled yasm && cp_if_changed $TMPASM config.asm
4599
4600 cat > $TMPH <<EOF
4601 /* Generated by ffconf */
4602 #ifndef AVUTIL_AVCONFIG_H
4603 #define AVUTIL_AVCONFIG_H
4604 EOF
4605
4606 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4607
4608 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4609
4610 cp_if_changed $TMPH libavutil/avconfig.h
4611
4612 test -n "$WARNINGS" && printf "\n$WARNINGS"
4613
4614 # build pkg-config files
4615
4616 pkgconfig_generate(){
4617     name=$1
4618     shortname=${name#lib}${build_suffix}
4619     comment=$2
4620     version=$3
4621     libs=$4
4622     requires=$5
4623     enabled ${name#lib} || return 0
4624     mkdir -p $name
4625     cat <<EOF > $name/$name.pc
4626 prefix=$prefix
4627 exec_prefix=\${prefix}
4628 libdir=$libdir
4629 includedir=$incdir
4630
4631 Name: $name
4632 Description: $comment
4633 Version: $version
4634 Requires: $(enabled shared || echo $requires)
4635 Requires.private: $(enabled shared && echo $requires)
4636 Conflicts:
4637 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4638 Libs.private: $(enabled shared && echo $libs)
4639 Cflags: -I\${includedir}
4640 EOF
4641     cat <<EOF > $name/$name-uninstalled.pc
4642 prefix=
4643 exec_prefix=
4644 libdir=\${pcfiledir}
4645 includedir=${source_path}
4646
4647 Name: $name
4648 Description: $comment
4649 Version: $version
4650 Requires: $requires
4651 Conflicts:
4652 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4653 Cflags: -I\${includedir}
4654 EOF
4655 }
4656
4657 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4658 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4659 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4660 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4661
4662 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4663 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4664 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4665 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4666 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4667 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4668 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"