avconv: add support for DXVA2 decoding
[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-libtwolame      enable MP2 encoding via libtwolame [no]
201   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
202   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
203   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
204   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
205   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
206   --enable-libwebp         enable WebP encoding via libwebp [no]
207   --enable-libx264         enable H.264 encoding via x264 [no]
208   --enable-libx265         enable HEVC encoding via x265 [no]
209   --enable-libxavs         enable AVS encoding via xavs [no]
210   --enable-libxvid         enable Xvid encoding via xvidcore,
211                            native MPEG-4/Xvid encoder exists [no]
212   --enable-openssl         enable openssl [no]
213   --enable-x11grab         enable X11 grabbing [no]
214   --enable-zlib            enable zlib [autodetect]
215
216 Toolchain options:
217   --arch=ARCH              select architecture [$arch]
218   --cpu=CPU                select the minimum required CPU (affects
219                            instruction selection, may crash on older CPUs)
220   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
221   --enable-cross-compile   assume a cross-compiler is used
222   --sysroot=PATH           root of cross-build tree
223   --sysinclude=PATH        location of cross-build system headers
224   --target-os=OS           compiler targets OS [$target_os]
225   --target-exec=CMD        command to run executables on target
226   --target-path=DIR        path to view of build directory on target
227   --target-samples=DIR     path to samples directory on target
228   --toolchain=NAME         set tool defaults according to NAME
229   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
230   --nm=NM                  use nm tool
231   --ar=AR                  use archive tool AR [$ar_default]
232   --as=AS                  use assembler AS [$as_default]
233   --cc=CC                  use C compiler CC [$cc_default]
234   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
235   --ld=LD                  use linker LD
236   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
237   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
238   --host-cc=HOSTCC         use host C compiler HOSTCC
239   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
240   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
241   --host-ld=HOSTLD         use host linker HOSTLD
242   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
243   --host-libs=HLIBS        use libs HLIBS when linking for host
244   --host-os=OS             compiler host OS [$target_os]
245   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
246   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
247   --extra-libs=ELIBS       add ELIBS [$ELIBS]
248   --extra-version=STRING   version string suffix []
249   --optflags=OPTFLAGS      override optimization-related compiler flags
250   --build-suffix=SUFFIX    library name suffix []
251   --enable-pic             build position-independent code
252   --enable-thumb           compile for Thumb instruction set
253   --enable-lto             use link-time optimization
254
255 Advanced options (experts only):
256   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
257   --disable-symver         disable symbol versioning
258   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
259   --disable-safe-bitstream-reader
260                            disable buffer boundary checking in bitreaders
261                            (faster, but may crash)
262   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
263   --enable-sram            allow use of on-chip SRAM
264
265 Optimization options (experts only):
266   --disable-asm            disable all assembler optimizations
267   --disable-altivec        disable AltiVec optimizations
268   --disable-amd3dnow       disable 3DNow! optimizations
269   --disable-amd3dnowext    disable 3DNow! extended optimizations
270   --disable-mmx            disable MMX optimizations
271   --disable-mmxext         disable MMXEXT optimizations
272   --disable-sse            disable SSE optimizations
273   --disable-sse2           disable SSE2 optimizations
274   --disable-sse3           disable SSE3 optimizations
275   --disable-ssse3          disable SSSE3 optimizations
276   --disable-sse4           disable SSE4 optimizations
277   --disable-sse42          disable SSE4.2 optimizations
278   --disable-avx            disable AVX optimizations
279   --disable-xop            disable XOP optimizations
280   --disable-fma3           disable FMA3 optimizations
281   --disable-fma4           disable FMA4 optimizations
282   --disable-avx2           disable AVX2 optimizations
283   --disable-armv5te        disable armv5te optimizations
284   --disable-armv6          disable armv6 optimizations
285   --disable-armv6t2        disable armv6t2 optimizations
286   --disable-vfp            disable VFP optimizations
287   --disable-neon           disable NEON optimizations
288   --disable-inline-asm     disable use of inline assembler
289   --disable-yasm           disable use of yasm assembler
290
291 Developer options (useful when working on Libav itself):
292   --disable-debug          disable debugging symbols
293   --enable-debug=LEVEL     set the debug level [$debuglevel]
294   --disable-optimizations  disable compiler optimizations
295   --enable-extra-warnings  enable more compiler warnings
296   --samples=PATH           location of test samples for FATE, if not set use
297                            \$LIBAV_SAMPLES at make invocation time.
298   --enable-neon-clobber-test check NEON registers for clobbering (should be
299                            used only for debugging purposes)
300   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
301                            should be used only for debugging purposes)
302   --enable-random          randomly enable/disable components
303   --disable-random
304   --enable-random=LIST     randomly enable/disable specific components or
305   --disable-random=LIST    component groups. LIST is a comma-separated list
306                            of NAME[:PROB] entries where NAME is a component
307                            (group) and PROB the probability associated with
308                            NAME (default 0.5).
309   --random-seed=VALUE      seed value for --enable/disable-random
310
311 NOTE: Object files are built at the place where configure is launched.
312 EOF
313   exit 0
314 }
315
316 quotes='""'
317
318 log(){
319     echo "$@" >> $logfile
320 }
321
322 log_file(){
323     log BEGIN $1
324     pr -n -t $1 >> $logfile
325     log END $1
326 }
327
328 echolog(){
329     log "$@"
330     echo "$@"
331 }
332
333 warn(){
334     log "WARNING: $*"
335     WARNINGS="${WARNINGS}WARNING: $*\n"
336 }
337
338 die(){
339     echolog "$@"
340     cat <<EOF
341
342 If you think configure made a mistake, make sure you are using the latest
343 version from Git.  If the latest version fails, report the problem to the
344 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
345 EOF
346     if disabled logging; then
347         cat <<EOF
348 Rerun configure with logging enabled (do not use --disable-logging), and
349 include the log this produces with your report.
350 EOF
351     else
352         cat <<EOF
353 Include the log file "$logfile" produced by configure as this will help
354 solving the problem.
355 EOF
356     fi
357     exit 1
358 }
359
360 # Avoid locale weirdness, besides we really just want to translate ASCII.
361 toupper(){
362     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
363 }
364
365 tolower(){
366     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
367 }
368
369 c_escape(){
370     echo "$*" | sed 's/["\\]/\\\0/g'
371 }
372
373 sh_quote(){
374     v=$(echo "$1" | sed "s/'/'\\\\''/g")
375     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
376     echo "$v"
377 }
378
379 cleanws(){
380     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
381 }
382
383 filter(){
384     pat=$1
385     shift
386     for v; do
387         eval "case $v in $pat) echo $v ;; esac"
388     done
389 }
390
391 filter_out(){
392     pat=$1
393     shift
394     for v; do
395         eval "case $v in $pat) ;; *) echo $v ;; esac"
396     done
397 }
398
399 map(){
400     m=$1
401     shift
402     for v; do eval $m; done
403 }
404
405 add_suffix(){
406     suffix=$1
407     shift
408     for v; do echo ${v}${suffix}; done
409 }
410
411 set_all(){
412     value=$1
413     shift
414     for var in $*; do
415         eval $var=$value
416     done
417 }
418
419 set_weak(){
420     value=$1
421     shift
422     for var; do
423         eval : \${$var:=$value}
424     done
425 }
426
427 sanitize_var_name(){
428     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
429 }
430
431 set_safe(){
432     var=$1
433     shift
434     eval $(sanitize_var_name "$var")='$*'
435 }
436
437 get_safe(){
438     eval echo \$$(sanitize_var_name "$1")
439 }
440
441 pushvar(){
442     for pvar in $*; do
443         eval level=\${${pvar}_level:=0}
444         eval ${pvar}_${level}="\$$pvar"
445         eval ${pvar}_level=$(($level+1))
446     done
447 }
448
449 popvar(){
450     for pvar in $*; do
451         eval level=\${${pvar}_level:-0}
452         test $level = 0 && continue
453         eval level=$(($level-1))
454         eval $pvar="\${${pvar}_${level}}"
455         eval ${pvar}_level=$level
456         eval unset ${pvar}_${level}
457     done
458 }
459
460 enable(){
461     set_all yes $*
462 }
463
464 disable(){
465     set_all no $*
466 }
467
468 enable_weak(){
469     set_weak yes $*
470 }
471
472 disable_weak(){
473     set_weak no $*
474 }
475
476 enable_safe(){
477     for var; do
478         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
479     done
480 }
481
482 disable_safe(){
483     for var; do
484         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
485     done
486 }
487
488 do_enable_deep(){
489     for var; do
490         enabled $var && continue
491         eval sel="\$${var}_select"
492         eval sgs="\$${var}_suggest"
493         pushvar var sgs
494         enable_deep $sel
495         popvar sgs
496         enable_deep_weak $sgs
497         popvar var
498     done
499 }
500
501 enable_deep(){
502     do_enable_deep $*
503     enable $*
504 }
505
506 enable_deep_weak(){
507     for var; do
508         disabled $var && continue
509         pushvar var
510         do_enable_deep $var
511         popvar var
512         enable_weak $var
513     done
514 }
515
516 enabled(){
517     test "${1#!}" = "$1" && op== || op=!=
518     eval test "x\$${1#!}" $op "xyes"
519 }
520
521 disabled(){
522     test "${1#!}" = "$1" && op== || op=!=
523     eval test "x\$${1#!}" $op "xno"
524 }
525
526 enabled_all(){
527     for opt; do
528         enabled $opt || return 1
529     done
530 }
531
532 disabled_all(){
533     for opt; do
534         disabled $opt || return 1
535     done
536 }
537
538 enabled_any(){
539     for opt; do
540         enabled $opt && return 0
541     done
542 }
543
544 disabled_any(){
545     for opt; do
546         disabled $opt && return 0
547     done
548     return 1
549 }
550
551 set_default(){
552     for opt; do
553         eval : \${$opt:=\$${opt}_default}
554     done
555 }
556
557 is_in(){
558     value=$1
559     shift
560     for var in $*; do
561         [ $var = $value ] && return 0
562     done
563     return 1
564 }
565
566 do_check_deps(){
567     for cfg; do
568         cfg="${cfg#!}"
569         enabled ${cfg}_checking && die "Circular dependency for $cfg."
570         disabled ${cfg}_checking && continue
571         enable ${cfg}_checking
572         append allopts $cfg
573
574         eval dep_all="\$${cfg}_deps"
575         eval dep_any="\$${cfg}_deps_any"
576         eval dep_sel="\$${cfg}_select"
577         eval dep_sgs="\$${cfg}_suggest"
578         eval dep_ifa="\$${cfg}_if"
579         eval dep_ifn="\$${cfg}_if_any"
580
581         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
582         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
583         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
584
585         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
586         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
587         enabled_all  $dep_all || disable $cfg
588         enabled_any  $dep_any || disable $cfg
589         disabled_any $dep_sel && disable $cfg
590
591         if enabled $cfg; then
592             enable_deep $dep_sel
593             enable_deep_weak $dep_sgs
594         fi
595
596         disable ${cfg}_checking
597     done
598 }
599
600 check_deps(){
601     unset allopts
602
603     do_check_deps "$@"
604
605     for cfg in $allopts; do
606         enabled $cfg || continue
607         eval dep_extralibs="\$${cfg}_extralibs"
608         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
609     done
610 }
611
612 print_config(){
613     pfx=$1
614     files=$2
615     shift 2
616     map 'eval echo "$v \${$v:-no}"' "$@" |
617     awk "BEGIN { split(\"$files\", files) }
618         {
619             c = \"$pfx\" toupper(\$1);
620             v = \$2;
621             sub(/yes/, 1, v);
622             sub(/no/,  0, v);
623             for (f in files) {
624                 file = files[f];
625                 if (file ~ /\\.h\$/) {
626                     printf(\"#define %s %d\\n\", c, v) >>file;
627                 } else if (file ~ /\\.asm\$/) {
628                     printf(\"%%define %s %d\\n\", c, v) >>file;
629                 } else if (file ~ /\\.mak\$/) {
630                     n = -v ? \"\" : \"!\";
631                     printf(\"%s%s=yes\\n\", n, c) >>file;
632                 }
633             }
634         }"
635 }
636
637 print_enabled(){
638     suf=$1
639     shift
640     for v; do
641         enabled $v && printf "%s\n" ${v%$suf};
642     done
643 }
644
645 append(){
646     var=$1
647     shift
648     eval "$var=\"\$$var $*\""
649 }
650
651 prepend(){
652     var=$1
653     shift
654     eval "$var=\"$* \$$var\""
655 }
656
657 add_cppflags(){
658     append CPPFLAGS "$@"
659 }
660
661 add_cflags(){
662     append CFLAGS $($cflags_filter "$@")
663 }
664
665 add_asflags(){
666     append ASFLAGS $($asflags_filter "$@")
667 }
668
669 add_ldflags(){
670     append LDFLAGS $($ldflags_filter "$@")
671 }
672
673 add_stripflags(){
674     append STRIPFLAGS "$@"
675 }
676
677 add_extralibs(){
678     prepend extralibs $($ldflags_filter "$@")
679 }
680
681 add_host_cppflags(){
682     append host_cppflags "$@"
683 }
684
685 add_host_cflags(){
686     append host_cflags $($host_cflags_filter "$@")
687 }
688
689 add_host_ldflags(){
690     append host_ldflags $($host_ldflags_filter "$@")
691 }
692
693 add_compat(){
694     append compat_objs $1
695     shift
696     map 'add_cppflags -D$v' "$@"
697 }
698
699 check_cmd(){
700     log "$@"
701     "$@" >> $logfile 2>&1
702 }
703
704 cc_o(){
705     eval printf '%s\\n' $CC_O
706 }
707
708 cc_e(){
709     eval printf '%s\\n' $CC_E
710 }
711
712 check_cc(){
713     log check_cc "$@"
714     cat > $TMPC
715     log_file $TMPC
716     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
717 }
718
719 check_cpp(){
720     log check_cpp "$@"
721     cat > $TMPC
722     log_file $TMPC
723     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
724 }
725
726 as_o(){
727     eval printf '%s\\n' $AS_O
728 }
729
730 check_as(){
731     log check_as "$@"
732     cat > $TMPS
733     log_file $TMPS
734     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
735 }
736
737 check_inline_asm(){
738     log check_inline_asm "$@"
739     name="$1"
740     code="$2"
741     shift 2
742     disable $name
743     check_cc "$@" <<EOF && enable $name
744 void foo(void){ __asm__ volatile($code); }
745 EOF
746 }
747
748 check_insn(){
749     log check_insn "$@"
750     check_inline_asm ${1}_inline "\"$2\""
751     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
752 }
753
754 check_yasm(){
755     log check_yasm "$@"
756     echo "$1" > $TMPS
757     log_file $TMPS
758     shift 1
759     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
760 }
761
762 ld_o(){
763     eval printf '%s\\n' $LD_O
764 }
765
766 check_ld(){
767     log check_ld "$@"
768     flags=$(filter_out '-l*' "$@")
769     libs=$(filter '-l*' "$@")
770     check_cc $($cflags_filter $flags) || return
771     flags=$($ldflags_filter $flags)
772     libs=$($ldflags_filter $libs)
773     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
774 }
775
776 print_include(){
777     hdr=$1
778     test "${hdr%.h}" = "${hdr}" &&
779         echo "#include $hdr"    ||
780         echo "#include <$hdr>"
781 }
782
783 check_code(){
784     log check_code "$@"
785     check=$1
786     headers=$2
787     code=$3
788     shift 3
789     {
790         for hdr in $headers; do
791             print_include $hdr
792         done
793         echo "int main(void) { $code; return 0; }"
794     } | check_$check "$@"
795 }
796
797 check_cppflags(){
798     log check_cppflags "$@"
799     check_cc "$@" <<EOF && append CPPFLAGS "$@"
800 int x;
801 EOF
802 }
803
804 test_cflags(){
805     log test_cflags "$@"
806     set -- $($cflags_filter "$@")
807     check_cc "$@" <<EOF
808 int x;
809 EOF
810 }
811
812 check_cflags(){
813     log check_cflags "$@"
814     test_cflags "$@" && add_cflags "$@"
815 }
816
817 test_ldflags(){
818     log test_ldflags "$@"
819     check_ld "$@" <<EOF
820 int main(void){ return 0; }
821 EOF
822 }
823
824 check_ldflags(){
825     log check_ldflags "$@"
826     test_ldflags "$@" && add_ldflags "$@"
827 }
828
829 test_stripflags(){
830     log test_stripflags "$@"
831     # call check_cc to get a fresh TMPO
832     check_cc <<EOF
833 int main(void) { return 0; }
834 EOF
835     check_cmd $strip $STRIPFLAGS "$@" $TMPO
836 }
837
838 check_stripflags(){
839     log check_stripflags "$@"
840     test_stripflags "$@" && add_stripflags "$@"
841 }
842
843 check_header(){
844     log check_header "$@"
845     header=$1
846     shift
847     disable_safe $header
848     check_cpp "$@" <<EOF && enable_safe $header
849 #include <$header>
850 int x;
851 EOF
852 }
853
854 check_func(){
855     log check_func "$@"
856     func=$1
857     shift
858     disable $func
859     check_ld "$@" <<EOF && enable $func
860 extern int $func();
861 int main(void){ $func(); }
862 EOF
863 }
864
865 check_mathfunc(){
866     log check_mathfunc "$@"
867     func=$1
868     narg=$2
869     shift 2
870     test $narg = 2 && args="f, g" || args="f"
871     disable $func
872     check_ld "$@" <<EOF && enable $func
873 #include <math.h>
874 float foo(float f, float g) { return $func($args); }
875 int main(void){ return 0; }
876 EOF
877 }
878
879 check_func_headers(){
880     log check_func_headers "$@"
881     headers=$1
882     funcs=$2
883     shift 2
884     {
885         for hdr in $headers; do
886             print_include $hdr
887         done
888         for func in $funcs; do
889             echo "long check_$func(void) { return (long) $func; }"
890         done
891         echo "int main(void) { return 0; }"
892     } | check_ld "$@" && enable $funcs && enable_safe $headers
893 }
894
895 check_cpp_condition(){
896     log check_cpp_condition "$@"
897     header=$1
898     condition=$2
899     shift 2
900     check_cpp "$@" <<EOF
901 #include <$header>
902 #if !($condition)
903 #error "unsatisfied condition: $condition"
904 #endif
905 EOF
906 }
907
908 check_lib(){
909     log check_lib "$@"
910     header="$1"
911     func="$2"
912     shift 2
913     check_header $header && check_func $func "$@" && add_extralibs "$@"
914 }
915
916 check_lib2(){
917     log check_lib2 "$@"
918     headers="$1"
919     funcs="$2"
920     shift 2
921     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
922 }
923
924 check_pkg_config(){
925     log check_pkg_config "$@"
926     pkg="$1"
927     headers="$2"
928     funcs="$3"
929     shift 3
930     check_cmd $pkg_config --exists --print-errors $pkg || return
931     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
932     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
933     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
934         set_safe ${pkg}_cflags $pkg_cflags   &&
935         set_safe ${pkg}_libs   $pkg_libs
936 }
937
938 check_exec(){
939     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
940 }
941
942 check_exec_crash(){
943     code=$(cat)
944
945     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
946     # are safe but may not be available everywhere.  Thus we use
947     # raise(SIGTERM) instead.  The check is run in a subshell so we
948     # can redirect the "Terminated" message from the shell.  SIGBUS
949     # is not defined by standard C so it is used conditionally.
950
951     (check_exec "$@") >> $logfile 2>&1 <<EOF
952 #include <signal.h>
953 static void sighandler(int sig){
954     raise(SIGTERM);
955 }
956 int foo(void){
957     $code
958 }
959 int (*func_ptr)(void) = foo;
960 int main(void){
961     signal(SIGILL, sighandler);
962     signal(SIGFPE, sighandler);
963     signal(SIGSEGV, sighandler);
964 #ifdef SIGBUS
965     signal(SIGBUS, sighandler);
966 #endif
967     return func_ptr();
968 }
969 EOF
970 }
971
972 check_type(){
973     log check_type "$@"
974     headers=$1
975     type=$2
976     shift 2
977     disable_safe "$type"
978     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
979 }
980
981 check_struct(){
982     log check_struct "$@"
983     headers=$1
984     struct=$2
985     member=$3
986     shift 3
987     disable_safe "${struct}_${member}"
988     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
989         enable_safe "${struct}_${member}"
990 }
991
992 check_builtin(){
993     log check_builtin "$@"
994     name=$1
995     headers=$2
996     builtin=$3
997     shift 3
998     disable "$name"
999     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1000 }
1001
1002 check_compile_assert(){
1003     log check_compile_assert "$@"
1004     name=$1
1005     headers=$2
1006     condition=$3
1007     shift 3
1008     disable "$name"
1009     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1010 }
1011
1012 require(){
1013     name="$1"
1014     header="$2"
1015     func="$3"
1016     shift 3
1017     check_lib $header $func "$@" || die "ERROR: $name not found"
1018 }
1019
1020 require2(){
1021     name="$1"
1022     headers="$2"
1023     func="$3"
1024     shift 3
1025     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1026 }
1027
1028 require_pkg_config(){
1029     pkg="$1"
1030     check_pkg_config "$@" || die "ERROR: $pkg not found"
1031     add_cflags    $(get_safe ${pkg}_cflags)
1032     add_extralibs $(get_safe ${pkg}_libs)
1033 }
1034
1035 hostcc_e(){
1036     eval printf '%s\\n' $HOSTCC_E
1037 }
1038
1039 hostcc_o(){
1040     eval printf '%s\\n' $HOSTCC_O
1041 }
1042
1043 check_host_cc(){
1044     log check_host_cc "$@"
1045     cat > $TMPC
1046     log_file $TMPC
1047     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1048 }
1049
1050 check_host_cpp(){
1051     log check_host_cpp "$@"
1052     cat > $TMPC
1053     log_file $TMPC
1054     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1055 }
1056
1057 check_host_cppflags(){
1058     log check_host_cppflags "$@"
1059     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1060 int x;
1061 EOF
1062 }
1063
1064 check_host_cflags(){
1065     log check_host_cflags "$@"
1066     set -- $($host_cflags_filter "$@")
1067     check_host_cc "$@" <<EOF && append host_cflags "$@"
1068 int x;
1069 EOF
1070 }
1071
1072 check_host_cpp_condition(){
1073     log check_host_cpp_condition "$@"
1074     header=$1
1075     condition=$2
1076     shift 2
1077     check_host_cpp "$@" <<EOF
1078 #include <$header>
1079 #if !($condition)
1080 #error "unsatisfied condition: $condition"
1081 #endif
1082 EOF
1083 }
1084
1085 apply(){
1086     file=$1
1087     shift
1088     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1089 }
1090
1091 cp_if_changed(){
1092     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1093     mkdir -p "$(dirname $2)"
1094     $cp_f "$1" "$2"
1095 }
1096
1097 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1098 # system-dependent things.
1099
1100 COMPONENT_LIST="
1101     bsfs
1102     decoders
1103     demuxers
1104     encoders
1105     filters
1106     hwaccels
1107     indevs
1108     muxers
1109     outdevs
1110     parsers
1111     protocols
1112 "
1113
1114 EXAMPLE_LIST="
1115     avcodec_example
1116     filter_audio_example
1117     metadata_example
1118     output_example
1119     transcode_aac_example
1120 "
1121
1122 EXTERNAL_LIBRARY_LIST="
1123     avisynth
1124     bzlib
1125     frei0r
1126     gnutls
1127     libcdio
1128     libdc1394
1129     libfaac
1130     libfdk_aac
1131     libfontconfig
1132     libfreetype
1133     libgsm
1134     libilbc
1135     libmp3lame
1136     libopencore_amrnb
1137     libopencore_amrwb
1138     libopencv
1139     libopenjpeg
1140     libopus
1141     libpulse
1142     librtmp
1143     libschroedinger
1144     libspeex
1145     libtheora
1146     libtwolame
1147     libvo_aacenc
1148     libvo_amrwbenc
1149     libvorbis
1150     libvpx
1151     libwavpack
1152     libwebp
1153     libx264
1154     libx265
1155     libxavs
1156     libxvid
1157     openssl
1158     x11grab
1159     zlib
1160 "
1161
1162 FEATURE_LIST="
1163     gray
1164     hardcoded_tables
1165     runtime_cpudetect
1166     safe_bitstream_reader
1167     shared
1168     small
1169     sram
1170     static
1171     swscale_alpha
1172 "
1173
1174 HWACCEL_LIST="
1175     dxva2
1176     vaapi
1177     vda
1178     vdpau
1179 "
1180
1181 LIBRARY_LIST="
1182     avcodec
1183     avdevice
1184     avfilter
1185     avformat
1186     avresample
1187     avutil
1188     swscale
1189 "
1190
1191 LICENSE_LIST="
1192     gpl
1193     nonfree
1194     version3
1195 "
1196
1197 PROGRAM_LIST="
1198     avconv
1199     avplay
1200     avprobe
1201     avserver
1202 "
1203
1204 SUBSYSTEM_LIST="
1205     dct
1206     doc
1207     error_resilience
1208     fft
1209     lsp
1210     lzo
1211     mdct
1212     network
1213     rdft
1214 "
1215
1216 CONFIG_LIST="
1217     $COMPONENT_LIST
1218     $EXAMPLE_LIST
1219     $EXTERNAL_LIBRARY_LIST
1220     $FEATURE_LIST
1221     $HWACCEL_LIST
1222     $LICENSE_LIST
1223     $LIBRARY_LIST
1224     $PROGRAM_LIST
1225     $SUBSYSTEM_LIST
1226     memalign_hack
1227     neon_clobber_test
1228     pic
1229     pod2man
1230     texi2html
1231     thumb
1232     xmm_clobber_test
1233 "
1234
1235 THREADS_LIST="
1236     pthreads
1237     w32threads
1238 "
1239
1240 ATOMICS_LIST="
1241     atomics_gcc
1242     atomics_suncc
1243     atomics_win32
1244 "
1245
1246 ARCH_LIST="
1247     aarch64
1248     alpha
1249     arm
1250     avr32
1251     avr32_ap
1252     avr32_uc
1253     bfin
1254     ia64
1255     m68k
1256     mips
1257     mips64
1258     parisc
1259     ppc
1260     ppc64
1261     s390
1262     sh4
1263     sparc
1264     sparc64
1265     tilegx
1266     tilepro
1267     tomi
1268     x86
1269     x86_32
1270     x86_64
1271 "
1272
1273 ARCH_EXT_LIST_ARM="
1274     armv5te
1275     armv6
1276     armv6t2
1277     armv8
1278     neon
1279     vfp
1280     vfpv3
1281 "
1282
1283 ARCH_EXT_LIST_X86_SIMD="
1284     amd3dnow
1285     amd3dnowext
1286     avx
1287     avx2
1288     fma3
1289     fma4
1290     mmx
1291     mmxext
1292     sse
1293     sse2
1294     sse3
1295     sse4
1296     sse42
1297     ssse3
1298     xop
1299 "
1300
1301 ARCH_EXT_LIST_PPC="
1302     altivec
1303     dcbzl
1304     ldbrx
1305     ppc4xx
1306 "
1307
1308 ARCH_EXT_LIST_X86="
1309     $ARCH_EXT_LIST_X86_SIMD
1310     cpunop
1311     i686
1312 "
1313
1314 ARCH_EXT_LIST="
1315     $ARCH_EXT_LIST_ARM
1316     $ARCH_EXT_LIST_PPC
1317     $ARCH_EXT_LIST_X86
1318     loongson
1319     vis
1320 "
1321
1322 ARCH_FEATURES="
1323     aligned_stack
1324     fast_64bit
1325     fast_clz
1326     fast_cmov
1327     local_aligned_8
1328     local_aligned_16
1329 "
1330
1331 BUILTIN_LIST="
1332     atomic_cas_ptr
1333     machine_rw_barrier
1334     MemoryBarrier
1335     mm_empty
1336     rdtsc
1337     sync_val_compare_and_swap
1338 "
1339 HAVE_LIST_CMDLINE="
1340     inline_asm
1341     symver
1342     yasm
1343 "
1344
1345 HAVE_LIST_PUB="
1346     bigendian
1347     fast_unaligned
1348 "
1349
1350 HEADERS_LIST="
1351     alsa_asoundlib_h
1352     altivec_h
1353     arpa_inet_h
1354     cdio_paranoia_h
1355     cdio_paranoia_paranoia_h
1356     dev_bktr_ioctl_bt848_h
1357     dev_bktr_ioctl_meteor_h
1358     dev_ic_bt8xx_h
1359     dev_video_bktr_ioctl_bt848_h
1360     dev_video_meteor_ioctl_meteor_h
1361     direct_h
1362     dlfcn_h
1363     dxva_h
1364     gsm_h
1365     io_h
1366     mach_mach_time_h
1367     machine_ioctl_bt848_h
1368     machine_ioctl_meteor_h
1369     malloc_h
1370     poll_h
1371     sndio_h
1372     soundcard_h
1373     sys_mman_h
1374     sys_param_h
1375     sys_resource_h
1376     sys_select_h
1377     sys_soundcard_h
1378     sys_time_h
1379     sys_un_h
1380     sys_videoio_h
1381     unistd_h
1382     windows_h
1383     winsock2_h
1384 "
1385
1386 MATH_FUNCS="
1387     atanf
1388     atan2f
1389     cbrtf
1390     cosf
1391     exp2
1392     exp2f
1393     expf
1394     isinf
1395     isnan
1396     ldexpf
1397     llrint
1398     llrintf
1399     log2
1400     log2f
1401     log10f
1402     lrint
1403     lrintf
1404     powf
1405     rint
1406     round
1407     roundf
1408     sinf
1409     trunc
1410     truncf
1411 "
1412
1413 SYSTEM_FUNCS="
1414     aligned_malloc
1415     closesocket
1416     CommandLineToArgvW
1417     CryptGenRandom
1418     dlopen
1419     fcntl
1420     flt_lim
1421     fork
1422     getaddrinfo
1423     gethrtime
1424     getopt
1425     GetProcessAffinityMask
1426     GetProcessMemoryInfo
1427     GetProcessTimes
1428     getrusage
1429     getservbyport
1430     GetSystemTimeAsFileTime
1431     gettimeofday
1432     inet_aton
1433     isatty
1434     jack_port_get_latency_range
1435     localtime_r
1436     mach_absolute_time
1437     MapViewOfFile
1438     memalign
1439     mkstemp
1440     mmap
1441     mprotect
1442     nanosleep
1443     posix_memalign
1444     sched_getaffinity
1445     SetConsoleTextAttribute
1446     setmode
1447     setrlimit
1448     Sleep
1449     strerror_r
1450     strptime
1451     sysconf
1452     sysctl
1453     usleep
1454     VirtualAlloc
1455 "
1456
1457 TOOLCHAIN_FEATURES="
1458     asm_mod_q
1459     attribute_may_alias
1460     attribute_packed
1461     ebp_available
1462     ebx_available
1463     gnu_as
1464     ibm_asm
1465     inline_asm_labels
1466     pragma_deprecated
1467     symver_asm_label
1468     symver_gnu_asm
1469     vfp_args
1470     xform_asm
1471     xmm_clobbers
1472 "
1473
1474 TYPES_LIST="
1475     socklen_t
1476     struct_addrinfo
1477     struct_group_source_req
1478     struct_ip_mreq_source
1479     struct_ipv6_mreq
1480     struct_pollfd
1481     struct_rusage_ru_maxrss
1482     struct_sockaddr_in6
1483     struct_sockaddr_sa_len
1484     struct_sockaddr_storage
1485     struct_v4l2_frmivalenum_discrete
1486 "
1487
1488 HAVE_LIST="
1489     $ARCH_EXT_LIST
1490     $(add_suffix _external $ARCH_EXT_LIST)
1491     $(add_suffix _inline   $ARCH_EXT_LIST)
1492     $ARCH_FEATURES
1493     $ATOMICS_LIST
1494     $BUILTIN_LIST
1495     $HAVE_LIST_CMDLINE
1496     $HAVE_LIST_PUB
1497     $HEADERS_LIST
1498     $MATH_FUNCS
1499     $SYSTEM_FUNCS
1500     $THREADS_LIST
1501     $TOOLCHAIN_FEATURES
1502     $TYPES_LIST
1503     atomics_native
1504     dos_paths
1505     libc_msvcrt
1506     libdc1394_1
1507     libdc1394_2
1508     sdl
1509     threads
1510     vdpau_x11
1511     xlib
1512 "
1513
1514 # options emitted with CONFIG_ prefix but not available on the command line
1515 CONFIG_EXTRA="
1516     aandcttables
1517     ac3dsp
1518     audio_frame_queue
1519     cabac
1520     dsputil
1521     gcrypt
1522     golomb
1523     gplv3
1524     h263dsp
1525     h264chroma
1526     h264dsp
1527     h264pred
1528     h264qpel
1529     hpeldsp
1530     huffman
1531     intrax8
1532     lgplv3
1533     lpc
1534     mpegaudio
1535     mpegaudiodsp
1536     mpegvideo
1537     mpegvideoenc
1538     nettle
1539     rangecoder
1540     riffdec
1541     riffenc
1542     rtpdec
1543     rtpenc_chain
1544     sinewin
1545     tpeldsp
1546     videodsp
1547     vp3dsp
1548 "
1549
1550 CMDLINE_SELECT="
1551     $ARCH_EXT_LIST
1552     $CONFIG_LIST
1553     $HAVE_LIST_CMDLINE
1554     $THREADS_LIST
1555     asm
1556     cross_compile
1557     debug
1558     extra_warnings
1559     logging
1560     lto
1561     optimizations
1562 "
1563
1564 PATHS_LIST="
1565     bindir
1566     datadir
1567     docdir
1568     incdir
1569     libdir
1570     mandir
1571     prefix
1572     shlibdir
1573 "
1574
1575 CMDLINE_SET="
1576     $PATHS_LIST
1577     ar
1578     arch
1579     as
1580     build_suffix
1581     cc
1582     cpu
1583     cross_prefix
1584     dep_cc
1585     extra_version
1586     host_cc
1587     host_cflags
1588     host_ld
1589     host_ldflags
1590     host_libs
1591     host_os
1592     ld
1593     logfile
1594     malloc_prefix
1595     nm
1596     optflags
1597     pkg_config
1598     pkg_config_flags
1599     random_seed
1600     samples
1601     sysinclude
1602     sysroot
1603     target_exec
1604     target_os
1605     target_path
1606     target_samples
1607     toolchain
1608 "
1609
1610 CMDLINE_APPEND="
1611     extra_cflags
1612     host_cppflags
1613 "
1614
1615 # code dependency declarations
1616
1617 # architecture extensions
1618
1619 armv5te_deps="arm"
1620 armv6_deps="arm"
1621 armv6t2_deps="arm"
1622 armv8_deps="aarch64"
1623 neon_deps_any="aarch64 arm"
1624 vfp_deps_any="aarch64 arm"
1625 vfpv3_deps="vfp"
1626
1627 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1628
1629 altivec_deps="ppc"
1630 ppc4xx_deps="ppc"
1631
1632 cpunop_deps="i686"
1633 x86_64_select="i686"
1634 x86_64_suggest="fast_cmov"
1635
1636 amd3dnow_deps="mmx"
1637 amd3dnowext_deps="amd3dnow"
1638 i686_deps="x86"
1639 mmx_deps="x86"
1640 mmxext_deps="mmx"
1641 sse_deps="mmxext"
1642 sse2_deps="sse"
1643 sse3_deps="sse2"
1644 ssse3_deps="sse3"
1645 sse4_deps="ssse3"
1646 sse42_deps="sse4"
1647 avx_deps="sse42"
1648 xop_deps="avx"
1649 fma3_deps="avx"
1650 fma4_deps="avx"
1651 avx2_deps="avx"
1652
1653 mmx_external_deps="yasm"
1654 mmx_inline_deps="inline_asm"
1655 mmx_suggest="mmx_external mmx_inline"
1656
1657 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1658     eval dep=\$${ext}_deps
1659     eval ${ext}_external_deps='"${dep}_external"'
1660     eval ${ext}_inline_deps='"${dep}_inline"'
1661     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1662 done
1663
1664 aligned_stack_if_any="aarch64 ppc x86"
1665 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1666 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1667 fast_unaligned_if_any="aarch64 ppc x86"
1668
1669 need_memalign="altivec neon sse"
1670
1671 # system capabilities
1672 log2_deps="!libc_msvcrt"
1673
1674 symver_if_any="symver_asm_label symver_gnu_asm"
1675
1676 # threading support
1677 atomics_gcc_if="sync_val_compare_and_swap"
1678 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1679 atomics_win32_if="MemoryBarrier"
1680 atomics_native_if_any="$ATOMICS_LIST"
1681 w32threads_deps="atomics_native"
1682 threads_if_any="$THREADS_LIST"
1683
1684 # subsystems
1685 dct_select="rdft"
1686 error_resilience_select="dsputil"
1687 mdct_select="fft"
1688 rdft_select="fft"
1689 mpegaudio_select="mpegaudiodsp"
1690 mpegaudiodsp_select="dct"
1691 mpegvideo_select="dsputil hpeldsp videodsp"
1692 mpegvideoenc_select="dsputil mpegvideo"
1693
1694 # decoders / encoders
1695 aac_decoder_select="mdct sinewin"
1696 aac_encoder_select="audio_frame_queue mdct sinewin"
1697 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1698 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1699 ac3_encoder_select="mdct ac3dsp dsputil"
1700 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1701 aic_decoder_select="dsputil golomb"
1702 alac_encoder_select="lpc"
1703 als_decoder_select="dsputil"
1704 amrnb_decoder_select="lsp"
1705 amrwb_decoder_select="lsp"
1706 amv_decoder_select="sp5x_decoder"
1707 ape_decoder_select="dsputil"
1708 asv1_decoder_select="dsputil"
1709 asv1_encoder_select="dsputil"
1710 asv2_decoder_select="dsputil"
1711 asv2_encoder_select="dsputil"
1712 atrac1_decoder_select="mdct sinewin"
1713 atrac3_decoder_select="mdct"
1714 atrac3p_decoder_select="mdct sinewin"
1715 bink_decoder_select="dsputil hpeldsp"
1716 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1717 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1718 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1719 cllc_decoder_select="dsputil"
1720 comfortnoise_encoder_select="lpc"
1721 cook_decoder_select="dsputil mdct sinewin"
1722 cscd_decoder_select="lzo"
1723 cscd_decoder_suggest="zlib"
1724 dca_decoder_select="mdct"
1725 dnxhd_decoder_select="dsputil"
1726 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1727 dvvideo_decoder_select="dsputil"
1728 dvvideo_encoder_select="dsputil"
1729 dxa_decoder_deps="zlib"
1730 eac3_decoder_select="ac3_decoder"
1731 eac3_encoder_select="ac3_encoder"
1732 eamad_decoder_select="aandcttables dsputil mpegvideo"
1733 eatgq_decoder_select="aandcttables dsputil"
1734 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
1735 exr_decoder_deps="zlib"
1736 ffv1_decoder_select="golomb rangecoder"
1737 ffv1_encoder_select="rangecoder"
1738 ffvhuff_decoder_select="huffyuv_decoder"
1739 ffvhuff_encoder_select="huffyuv_encoder"
1740 fic_decoder_select="golomb"
1741 flac_decoder_select="golomb"
1742 flac_encoder_select="dsputil golomb lpc"
1743 flashsv_decoder_deps="zlib"
1744 flashsv_encoder_deps="zlib"
1745 flashsv2_decoder_deps="zlib"
1746 flv_decoder_select="h263_decoder"
1747 flv_encoder_select="h263_encoder"
1748 fourxm_decoder_select="dsputil"
1749 fraps_decoder_select="dsputil huffman"
1750 g2m_decoder_deps="zlib"
1751 g2m_decoder_select="dsputil"
1752 h261_decoder_select="error_resilience mpegvideo"
1753 h261_encoder_select="aandcttables mpegvideoenc"
1754 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1755 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1756 h263i_decoder_select="h263_decoder"
1757 h263p_encoder_select="h263_encoder"
1758 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1759 h264_decoder_suggest="error_resilience"
1760 hevc_decoder_select="cabac dsputil golomb videodsp"
1761 huffyuv_decoder_select="dsputil"
1762 huffyuv_encoder_select="dsputil huffman"
1763 iac_decoder_select="imc_decoder"
1764 imc_decoder_select="dsputil fft mdct sinewin"
1765 indeo3_decoder_select="hpeldsp"
1766 interplay_video_decoder_select="hpeldsp"
1767 jpegls_decoder_select="golomb mjpeg_decoder"
1768 jpegls_encoder_select="golomb"
1769 jv_decoder_select="dsputil"
1770 lagarith_decoder_select="dsputil"
1771 ljpeg_encoder_select="aandcttables mpegvideoenc"
1772 loco_decoder_select="golomb"
1773 mdec_decoder_select="dsputil error_resilience mpegvideo"
1774 metasound_decoder_select="lsp mdct sinewin"
1775 mimic_decoder_select="dsputil hpeldsp"
1776 mjpeg_decoder_select="dsputil hpeldsp"
1777 mjpeg_encoder_select="aandcttables mpegvideoenc"
1778 mjpegb_decoder_select="mjpeg_decoder"
1779 mlp_decoder_select="mlp_parser"
1780 motionpixels_decoder_select="dsputil"
1781 mp1_decoder_select="mpegaudio"
1782 mp1float_decoder_select="mpegaudio"
1783 mp2_decoder_select="mpegaudio"
1784 mp2float_decoder_select="mpegaudio"
1785 mp3_decoder_select="mpegaudio"
1786 mp3adu_decoder_select="mpegaudio"
1787 mp3adufloat_decoder_select="mpegaudio"
1788 mp3float_decoder_select="mpegaudio"
1789 mp3on4_decoder_select="mpegaudio"
1790 mp3on4float_decoder_select="mpegaudio"
1791 mpc7_decoder_select="dsputil mpegaudiodsp"
1792 mpc8_decoder_select="mpegaudiodsp"
1793 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1794 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1795 mpeg1video_decoder_select="error_resilience mpegvideo"
1796 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1797 mpeg2video_decoder_select="error_resilience mpegvideo"
1798 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1799 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1800 mpeg4_encoder_select="h263_encoder"
1801 msmpeg4v1_decoder_select="h263_decoder"
1802 msmpeg4v2_decoder_select="h263_decoder"
1803 msmpeg4v2_encoder_select="h263_encoder"
1804 msmpeg4v3_decoder_select="h263_decoder"
1805 msmpeg4v3_encoder_select="h263_encoder"
1806 mss2_decoder_select="error_resilience vc1_decoder"
1807 mxpeg_decoder_select="mjpeg_decoder"
1808 nellymoser_decoder_select="mdct sinewin"
1809 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1810 nuv_decoder_select="dsputil lzo"
1811 on2avc_decoder_select="mdct"
1812 png_decoder_deps="zlib"
1813 png_encoder_deps="zlib"
1814 png_encoder_select="dsputil"
1815 prores_decoder_select="dsputil"
1816 prores_encoder_select="dsputil"
1817 qcelp_decoder_select="lsp"
1818 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1819 ra_144_encoder_select="audio_frame_queue lpc"
1820 ralf_decoder_select="golomb"
1821 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1822 rv10_encoder_select="h263_encoder"
1823 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1824 rv20_encoder_select="h263_encoder"
1825 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1826 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1827 shorten_decoder_select="golomb"
1828 sipr_decoder_select="lsp"
1829 sp5x_decoder_select="mjpeg_decoder"
1830 svq1_decoder_select="hpeldsp"
1831 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1832 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1833 svq3_decoder_suggest="zlib"
1834 tak_decoder_select="dsputil"
1835 theora_decoder_select="vp3_decoder"
1836 thp_decoder_select="mjpeg_decoder"
1837 tiff_decoder_suggest="zlib"
1838 tiff_encoder_suggest="zlib"
1839 truehd_decoder_select="mlp_decoder"
1840 truemotion2_decoder_select="dsputil"
1841 truespeech_decoder_select="dsputil"
1842 tscc_decoder_deps="zlib"
1843 twinvq_decoder_select="mdct lsp sinewin"
1844 utvideo_decoder_select="dsputil"
1845 utvideo_encoder_select="dsputil huffman"
1846 vble_decoder_select="dsputil"
1847 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1848 vc1image_decoder_select="vc1_decoder"
1849 vorbis_decoder_select="mdct"
1850 vorbis_encoder_select="mdct"
1851 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1852 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1853 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1854 vp6a_decoder_select="vp6_decoder"
1855 vp6f_decoder_select="vp6_decoder"
1856 vp7_decoder_select="h264pred videodsp"
1857 vp8_decoder_select="h264pred videodsp"
1858 vp9_decoder_select="videodsp"
1859 webp_decoder_select="vp8_decoder"
1860 wmapro_decoder_select="mdct sinewin"
1861 wmav1_decoder_select="mdct sinewin"
1862 wmav1_encoder_select="mdct sinewin"
1863 wmav2_decoder_select="mdct sinewin"
1864 wmav2_encoder_select="mdct sinewin"
1865 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1866 wmv1_decoder_select="h263_decoder"
1867 wmv1_encoder_select="h263_encoder"
1868 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1869 wmv2_encoder_select="h263_encoder"
1870 wmv3_decoder_select="vc1_decoder"
1871 wmv3image_decoder_select="wmv3_decoder"
1872 zerocodec_decoder_deps="zlib"
1873 zlib_decoder_deps="zlib"
1874 zlib_encoder_deps="zlib"
1875 zmbv_decoder_deps="zlib"
1876 zmbv_encoder_deps="zlib"
1877
1878 # hardware accelerators
1879 dxva2_deps="dxva2api_h"
1880 vaapi_deps="va_va_h"
1881 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1882 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1883 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1884
1885 h263_vaapi_hwaccel_deps="vaapi"
1886 h263_vaapi_hwaccel_select="h263_decoder"
1887 h263_vdpau_hwaccel_deps="vdpau"
1888 h263_vdpau_hwaccel_select="h263_decoder"
1889 h264_dxva2_hwaccel_deps="dxva2"
1890 h264_dxva2_hwaccel_select="h264_decoder"
1891 h264_vaapi_hwaccel_deps="vaapi"
1892 h264_vaapi_hwaccel_select="h264_decoder"
1893 h264_vda_hwaccel_deps="vda"
1894 h264_vda_hwaccel_select="h264_decoder"
1895 h264_vdpau_hwaccel_deps="vdpau"
1896 h264_vdpau_hwaccel_select="h264_decoder"
1897 mpeg1_vdpau_hwaccel_deps="vdpau"
1898 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1899 mpeg2_dxva2_hwaccel_deps="dxva2"
1900 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1901 mpeg2_vaapi_hwaccel_deps="vaapi"
1902 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1903 mpeg2_vdpau_hwaccel_deps="vdpau"
1904 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1905 mpeg4_vaapi_hwaccel_deps="vaapi"
1906 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1907 mpeg4_vdpau_hwaccel_deps="vdpau"
1908 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1909 vc1_dxva2_hwaccel_deps="dxva2"
1910 vc1_dxva2_hwaccel_select="vc1_decoder"
1911 vc1_vaapi_hwaccel_deps="vaapi"
1912 vc1_vaapi_hwaccel_select="vc1_decoder"
1913 vc1_vdpau_hwaccel_deps="vdpau"
1914 vc1_vdpau_hwaccel_select="vc1_decoder"
1915 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1916 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1917 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1918
1919 # parsers
1920 h264_parser_select="h264_decoder"
1921 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1922 mpegvideo_parser_select="error_resilience mpegvideo"
1923 vc1_parser_select="mpegvideo"
1924
1925 # external libraries
1926 libfaac_encoder_deps="libfaac"
1927 libfaac_encoder_select="audio_frame_queue"
1928 libfdk_aac_decoder_deps="libfdk_aac"
1929 libfdk_aac_encoder_deps="libfdk_aac"
1930 libfdk_aac_encoder_select="audio_frame_queue"
1931 libgsm_decoder_deps="libgsm"
1932 libgsm_encoder_deps="libgsm"
1933 libgsm_ms_decoder_deps="libgsm"
1934 libgsm_ms_encoder_deps="libgsm"
1935 libilbc_decoder_deps="libilbc"
1936 libilbc_encoder_deps="libilbc"
1937 libmp3lame_encoder_deps="libmp3lame"
1938 libmp3lame_encoder_select="audio_frame_queue"
1939 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1940 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1941 libopencore_amrnb_encoder_select="audio_frame_queue"
1942 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1943 libopenjpeg_decoder_deps="libopenjpeg"
1944 libopenjpeg_encoder_deps="libopenjpeg"
1945 libopus_decoder_deps="libopus"
1946 libopus_encoder_deps="libopus"
1947 libopus_encoder_select="audio_frame_queue"
1948 libschroedinger_decoder_deps="libschroedinger"
1949 libschroedinger_encoder_deps="libschroedinger"
1950 libspeex_decoder_deps="libspeex"
1951 libspeex_encoder_deps="libspeex"
1952 libspeex_encoder_select="audio_frame_queue"
1953 libtheora_encoder_deps="libtheora"
1954 libtwolame_encoder_deps="libtwolame"
1955 libvo_aacenc_encoder_deps="libvo_aacenc"
1956 libvo_aacenc_encoder_select="audio_frame_queue"
1957 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1958 libvorbis_encoder_deps="libvorbis"
1959 libvorbis_encoder_select="audio_frame_queue"
1960 libvpx_vp8_decoder_deps="libvpx"
1961 libvpx_vp8_encoder_deps="libvpx"
1962 libvpx_vp9_decoder_deps="libvpx"
1963 libvpx_vp9_encoder_deps="libvpx"
1964 libwavpack_encoder_deps="libwavpack"
1965 libwebp_encoder_deps="libwebp"
1966 libx264_encoder_deps="libx264"
1967 libx265_encoder_deps="libx265"
1968 libxavs_encoder_deps="libxavs"
1969 libxvid_encoder_deps="libxvid"
1970
1971 # demuxers / muxers
1972 ac3_demuxer_select="ac3_parser"
1973 asf_demuxer_select="riffdec"
1974 asf_muxer_select="riffenc"
1975 asf_stream_muxer_select="asf_muxer"
1976 avi_demuxer_select="riffdec"
1977 avi_muxer_select="riffenc"
1978 avisynth_demuxer_deps="avisynth"
1979 avisynth_demuxer_select="riffdec"
1980 caf_demuxer_select="riffdec"
1981 dirac_demuxer_select="dirac_parser"
1982 dxa_demuxer_select="riffdec"
1983 eac3_demuxer_select="ac3_parser"
1984 f4v_muxer_select="mov_muxer"
1985 flac_demuxer_select="flac_parser"
1986 hds_muxer_select="flv_muxer"
1987 hls_muxer_select="mpegts_muxer"
1988 ipod_muxer_select="mov_muxer"
1989 ismv_muxer_select="mov_muxer"
1990 matroska_audio_muxer_select="matroska_muxer"
1991 matroska_demuxer_select="riffdec"
1992 matroska_demuxer_suggest="bzlib lzo zlib"
1993 matroska_muxer_select="riffenc"
1994 mmf_muxer_select="riffenc"
1995 mov_demuxer_select="riffdec"
1996 mov_demuxer_suggest="zlib"
1997 mov_muxer_select="riffenc rtpenc_chain"
1998 mp3_demuxer_select="mpegaudio_parser"
1999 mp4_muxer_select="mov_muxer"
2000 mpegts_muxer_select="adts_muxer latm_muxer"
2001 mpegtsraw_demuxer_select="mpegts_demuxer"
2002 mxf_d10_muxer_select="mxf_muxer"
2003 nut_muxer_select="riffenc"
2004 nuv_demuxer_select="riffdec"
2005 ogg_demuxer_select="golomb"
2006 psp_muxer_select="mov_muxer"
2007 rtp_demuxer_select="sdp_demuxer"
2008 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2009 rtsp_demuxer_select="http_protocol rtpdec"
2010 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2011 sap_demuxer_select="sdp_demuxer"
2012 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2013 sdp_demuxer_select="rtpdec"
2014 smoothstreaming_muxer_select="ismv_muxer"
2015 spdif_muxer_select="aac_parser"
2016 tak_demuxer_select="tak_parser"
2017 tg2_muxer_select="mov_muxer"
2018 tgp_muxer_select="mov_muxer"
2019 w64_demuxer_select="wav_demuxer"
2020 wav_demuxer_select="riffdec"
2021 wav_muxer_select="riffenc"
2022 webm_muxer_select="riffenc"
2023 wtv_demuxer_select="riffdec"
2024 xmv_demuxer_select="riffdec"
2025 xwma_demuxer_select="riffdec"
2026
2027 # indevs / outdevs
2028 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2029 alsa_outdev_deps="alsa_asoundlib_h"
2030 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2031 dv1394_indev_deps="dv1394"
2032 dv1394_indev_select="dv_demuxer"
2033 fbdev_indev_deps="linux_fb_h"
2034 jack_indev_deps="jack_jack_h pthreads"
2035 libcdio_indev_deps="libcdio"
2036 libdc1394_indev_deps="libdc1394"
2037 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2038 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2039 pulse_indev_deps="libpulse"
2040 sndio_indev_deps="sndio_h"
2041 sndio_outdev_deps="sndio_h"
2042 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2043 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2044 vfwcap_indev_extralibs="-lavicap32"
2045 x11grab_indev_deps="x11grab XShmCreateImage"
2046
2047 # protocols
2048 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2049 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2050 ffrtmpcrypt_protocol_select="tcp_protocol"
2051 ffrtmphttp_protocol_deps="!librtmp_protocol"
2052 ffrtmphttp_protocol_select="http_protocol"
2053 gopher_protocol_select="network"
2054 http_protocol_select="tcp_protocol"
2055 httpproxy_protocol_select="tcp_protocol"
2056 https_protocol_select="tls_protocol"
2057 librtmp_protocol_deps="librtmp"
2058 librtmpe_protocol_deps="librtmp"
2059 librtmps_protocol_deps="librtmp"
2060 librtmpt_protocol_deps="librtmp"
2061 librtmpte_protocol_deps="librtmp"
2062 mmsh_protocol_select="http_protocol"
2063 mmst_protocol_select="network"
2064 rtmp_protocol_deps="!librtmp_protocol"
2065 rtmp_protocol_select="tcp_protocol"
2066 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2067 rtmps_protocol_deps="!librtmp_protocol"
2068 rtmps_protocol_select="tls_protocol"
2069 rtmpt_protocol_select="ffrtmphttp_protocol"
2070 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2071 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2072 rtp_protocol_select="udp_protocol"
2073 sctp_protocol_deps="struct_sctp_event_subscribe"
2074 sctp_protocol_select="network"
2075 srtp_protocol_select="rtp_protocol"
2076 tcp_protocol_select="network"
2077 tls_protocol_deps_any="openssl gnutls"
2078 tls_protocol_select="tcp_protocol"
2079 udp_protocol_select="network"
2080 unix_protocol_deps="sys_un_h"
2081 unix_protocol_select="network"
2082
2083 # filters
2084 blackframe_filter_deps="gpl"
2085 boxblur_filter_deps="gpl"
2086 cropdetect_filter_deps="gpl"
2087 delogo_filter_deps="gpl"
2088 drawtext_filter_deps="libfreetype"
2089 frei0r_filter_deps="frei0r dlopen"
2090 frei0r_filter_extralibs='$ldl'
2091 frei0r_src_filter_deps="frei0r dlopen"
2092 frei0r_src_filter_extralibs='$ldl'
2093 hqdn3d_filter_deps="gpl"
2094 interlace_filter_deps="gpl"
2095 ocv_filter_deps="libopencv"
2096 resample_filter_deps="avresample"
2097 scale_filter_deps="swscale"
2098
2099 # examples
2100 avcodec_example_deps="avcodec avutil"
2101 filter_audio_example_deps="avfilter avutil"
2102 metadata_example_deps="avformat avutil"
2103 output_example_deps="avcodec avformat avutil swscale"
2104 transcode_aac_example_deps="avcodec avformat avresample"
2105
2106 # libraries
2107 avcodec_deps="avutil"
2108 avdevice_deps="avutil avcodec avformat"
2109 avfilter_deps="avutil"
2110 avformat_deps="avutil avcodec"
2111 avresample_deps="avutil"
2112 swscale_deps="avutil"
2113
2114 # programs
2115 avconv_deps="avcodec avfilter avformat avresample swscale"
2116 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2117                fps_filter null_filter resample_filter scale_filter
2118                setpts_filter trim_filter"
2119 avplay_deps="avcodec avformat avresample swscale sdl"
2120 avplay_libs='$sdl_libs'
2121 avplay_select="rdft"
2122 avprobe_deps="avcodec avformat"
2123 avserver_deps="avformat fork !shared"
2124 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2125
2126 # documentation
2127 pod2man_deps="doc"
2128 texi2html_deps="doc"
2129
2130 # default parameters
2131
2132 logfile="config.log"
2133
2134 # installation paths
2135 prefix_default="/usr/local"
2136 bindir_default='${prefix}/bin'
2137 datadir_default='${prefix}/share/avconv'
2138 docdir_default='${prefix}/share/doc/libav'
2139 incdir_default='${prefix}/include'
2140 libdir_default='${prefix}/lib'
2141 mandir_default='${prefix}/share/man'
2142 shlibdir_default="$libdir_default"
2143
2144 # toolchain
2145 ar_default="ar"
2146 cc_default="gcc"
2147 host_cc_default="gcc"
2148 cp_f="cp -f"
2149 ln_s="ln -s -f"
2150 nm_default="nm -g"
2151 objformat="elf"
2152 pkg_config_default=pkg-config
2153 ranlib="ranlib"
2154 strip="strip"
2155 yasmexe="yasm"
2156
2157 nogas=":"
2158
2159 # machine
2160 arch_default=$(uname -m)
2161 cpu="generic"
2162
2163 # OS
2164 target_os_default=$(tolower $(uname -s))
2165 host_os=$target_os_default
2166
2167 # configurable options
2168 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2169
2170 enable asm
2171 enable debug
2172 enable doc
2173 enable optimizations
2174 enable safe_bitstream_reader
2175 enable static
2176 enable swscale_alpha
2177
2178 # By default, enable only those hwaccels that have no external dependencies.
2179 enable dxva2 vdpau
2180
2181 # build settings
2182 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2183 LIBPREF="lib"
2184 LIBSUF=".a"
2185 FULLNAME='$(NAME)$(BUILDSUF)'
2186 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2187 SLIBPREF="lib"
2188 SLIBSUF=".so"
2189 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2190 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2191 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2192 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2193 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2194 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2195
2196 asflags_filter=echo
2197 cflags_filter=echo
2198 ldflags_filter=echo
2199
2200 AS_C='-c'
2201 AS_O='-o $@'
2202 CC_C='-c'
2203 CC_E='-E -o $@'
2204 CC_O='-o $@'
2205 LD_O='-o $@'
2206 LD_LIB='-l%'
2207 LD_PATH='-L'
2208 HOSTCC_C='-c'
2209 HOSTCC_E='-E -o $@'
2210 HOSTCC_O='-o $@'
2211 HOSTLD_O='-o $@'
2212
2213 host_libs='-lm'
2214 host_cflags_filter=echo
2215 host_ldflags_filter=echo
2216
2217 target_path='$(CURDIR)'
2218
2219 # since the object filename is not given with the -MM flag, the compiler
2220 # is only able to print the basename, and we must add the path ourselves
2221 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2222 DEPFLAGS='-MM'
2223
2224 # find source path
2225 if test -f configure; then
2226     source_path=.
2227 else
2228     source_path=$(cd $(dirname "$0"); pwd)
2229     echo "$source_path" | grep -q '[[:blank:]]' &&
2230         die "Out of tree builds are impossible with whitespace in source path."
2231     test -e "$source_path/config.h" &&
2232         die "Out of tree builds are impossible with config.h in source dir."
2233 fi
2234
2235 for v in "$@"; do
2236     r=${v#*=}
2237     l=${v%"$r"}
2238     r=$(sh_quote "$r")
2239     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2240 done
2241
2242 find_things(){
2243     thing=$1
2244     pattern=$2
2245     file=$source_path/$3
2246     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2247 }
2248
2249 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2250 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2251 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2252 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2253 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2254 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2255 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2256 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2257 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2258 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2259 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2260
2261 ALL_COMPONENTS="
2262     $BSF_LIST
2263     $DECODER_LIST
2264     $DEMUXER_LIST
2265     $ENCODER_LIST
2266     $FILTER_LIST
2267     $HWACCEL_LIST
2268     $INDEV_LIST
2269     $MUXER_LIST
2270     $OUTDEV_LIST
2271     $PARSER_LIST
2272     $PROTOCOL_LIST
2273 "
2274
2275 for n in $COMPONENT_LIST; do
2276     v=$(toupper ${n%s})_LIST
2277     eval enable \$$v
2278     eval ${n}_if_any="\$$v"
2279 done
2280
2281 enable $ARCH_EXT_LIST
2282
2283 die_unknown(){
2284     echo "Unknown option \"$1\"."
2285     echo "See $0 --help for available options."
2286     exit 1
2287 }
2288
2289 print_3_columns() {
2290     cat | tr ' ' '\n' | sort | pr -r -3 -t
2291 }
2292
2293 show_list() {
2294     suffix=_$1
2295     shift
2296     echo $* | sed s/$suffix//g | print_3_columns
2297     exit 0
2298 }
2299
2300 rand_list(){
2301     IFS=', '
2302     set -- $*
2303     unset IFS
2304     for thing; do
2305         comp=${thing%:*}
2306         prob=${thing#$comp}
2307         prob=${prob#:}
2308         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2309         echo "prob ${prob:-0.5}"
2310         printf '%s\n' $comp
2311     done
2312 }
2313
2314 do_random(){
2315     action=$1
2316     shift
2317     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2318     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2319 }
2320
2321 for opt do
2322     optval="${opt#*=}"
2323     case "$opt" in
2324         --extra-ldflags=*)
2325             add_ldflags $optval
2326         ;;
2327         --extra-libs=*)
2328             add_extralibs $optval
2329         ;;
2330         --disable-devices)
2331             disable $INDEV_LIST $OUTDEV_LIST
2332         ;;
2333         --enable-debug=*)
2334             debuglevel="$optval"
2335         ;;
2336         --disable-programs)
2337             disable $PROGRAM_LIST
2338         ;;
2339         --disable-everything)
2340             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2341         ;;
2342         --disable-all)
2343             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2344             disable $LIBRARY_LIST $PROGRAM_LIST doc
2345         ;;
2346         --enable-random|--disable-random)
2347             action=${opt%%-random}
2348             do_random ${action#--} $COMPONENT_LIST
2349         ;;
2350         --enable-random=*|--disable-random=*)
2351             action=${opt%%-random=*}
2352             do_random ${action#--} $optval
2353         ;;
2354         --enable-*=*|--disable-*=*)
2355             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2356             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2357             eval list=\$$(toupper $thing)_LIST
2358             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2359             $action $(filter "$name" $list)
2360         ;;
2361         --enable-?*|--disable-?*)
2362             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2363             if is_in $option $COMPONENT_LIST; then
2364                 test $action = disable && action=unset
2365                 eval $action \$$(toupper ${option%s})_LIST
2366             elif is_in $option $CMDLINE_SELECT; then
2367                 $action $option
2368             else
2369                 die_unknown $opt
2370             fi
2371         ;;
2372         --list-*)
2373             NAME="${opt#--list-}"
2374             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2375             NAME=${NAME%s}
2376             eval show_list $NAME \$$(toupper $NAME)_LIST
2377         ;;
2378         --help|-h) show_help
2379         ;;
2380         *)
2381             optname="${opt%%=*}"
2382             optname="${optname#--}"
2383             optname=$(echo "$optname" | sed 's/-/_/g')
2384             if is_in $optname $CMDLINE_SET; then
2385                 eval $optname='$optval'
2386             elif is_in $optname $CMDLINE_APPEND; then
2387                 append $optname "$optval"
2388             else
2389                 die_unknown $opt
2390             fi
2391         ;;
2392     esac
2393 done
2394
2395 disabled logging && logfile=/dev/null
2396
2397 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2398 set >> $logfile
2399
2400 test -n "$cross_prefix" && enable cross_compile
2401
2402 if enabled cross_compile; then
2403     test -n "$arch" && test -n "$target_os" ||
2404         die "Must specify target arch and OS when cross-compiling"
2405 fi
2406
2407 ar_default="${cross_prefix}${ar_default}"
2408 cc_default="${cross_prefix}${cc_default}"
2409 nm_default="${cross_prefix}${nm_default}"
2410 pkg_config_default="${cross_prefix}${pkg_config_default}"
2411 ranlib="${cross_prefix}${ranlib}"
2412 strip="${cross_prefix}${strip}"
2413
2414 sysinclude_default="${sysroot}/usr/include"
2415
2416 case "$toolchain" in
2417     clang-asan)
2418         cc_default="clang"
2419         add_cflags  -fsanitize=address
2420         add_ldflags -fsanitize=address
2421     ;;
2422     clang-tsan)
2423         cc_default="clang"
2424         add_cflags  -fsanitize=thread -pie
2425         add_ldflags -fsanitize=thread -pie
2426     ;;
2427     clang-usan)
2428         cc_default="clang"
2429         add_cflags  -fsanitize=undefined
2430         add_ldflags -fsanitize=undefined
2431     ;;
2432     gcc-asan)
2433         cc_default="gcc"
2434         add_cflags  -fsanitize=address
2435         add_ldflags -fsanitize=address
2436     ;;
2437     gcc-tsan)
2438         cc_default="gcc"
2439         add_cflags  -fsanitize=thread -pie -fPIC
2440         add_ldflags -fsanitize=thread -pie -fPIC
2441     ;;
2442     gcc-usan)
2443         cc_default="gcc"
2444         add_cflags  -fsanitize=undefined
2445         add_ldflags -fsanitize=undefined
2446     ;;
2447     valgrind-massif)
2448         target_exec_default="valgrind"
2449         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2450     ;;
2451     valgrind-memcheck)
2452         target_exec_default="valgrind"
2453         target_exec_args="--track-origins=yes --leak-check=full"
2454     ;;
2455     msvc)
2456         # Check whether the current MSVC version needs the C99 converter.
2457         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2458         # support enough of C99 to build libav. Default to the new
2459         # behaviour if the regexp was unable to match anything, since this
2460         # successfully parses the version number of existing supported
2461         # versions that require the converter (MSVC 2010 and 2012).
2462         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2463         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2464             cc_default="cl"
2465         else
2466             cc_default="c99wrap cl"
2467         fi
2468         ld_default="link"
2469         nm_default="dumpbin -symbols"
2470         ar_default="lib"
2471         target_os_default="win32"
2472         # Use a relative path for TMPDIR. This makes sure all the
2473         # ffconf temp files are written with a relative path, avoiding
2474         # issues with msys/win32 path conversion for MSVC parameters
2475         # such as -Fo<file> or -out:<file>.
2476         TMPDIR=.
2477     ;;
2478     icl)
2479         cc_default="icl"
2480         ld_default="xilink"
2481         nm_default="dumpbin -symbols"
2482         ar_default="xilib"
2483         target_os_default="win32"
2484         TMPDIR=.
2485     ;;
2486     gcov)
2487         add_cflags  -fprofile-arcs -ftest-coverage
2488         add_ldflags -fprofile-arcs -ftest-coverage
2489     ;;
2490     hardened)
2491         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2492         add_ldflags -Wl,-z,relro -Wl,-z,now
2493     ;;
2494     ?*)
2495         die "Unknown toolchain $toolchain"
2496     ;;
2497 esac
2498
2499 set_default arch cc pkg_config sysinclude target_exec target_os
2500 enabled cross_compile || host_cc_default=$cc
2501 set_default host_cc
2502
2503 if ! $pkg_config --version >/dev/null 2>&1; then
2504     warn "$pkg_config not found, library detection may fail."
2505     pkg_config=false
2506 fi
2507
2508 exesuf() {
2509     case $1 in
2510         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2511     esac
2512 }
2513
2514 EXESUF=$(exesuf $target_os)
2515 HOSTEXESUF=$(exesuf $host_os)
2516
2517 # set temporary file name
2518 : ${TMPDIR:=$TEMPDIR}
2519 : ${TMPDIR:=$TMP}
2520 : ${TMPDIR:=/tmp}
2521
2522 if ! check_cmd mktemp -u XXXXXX; then
2523     # simple replacement for missing mktemp
2524     # NOT SAFE FOR GENERAL USE
2525     mktemp(){
2526         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2527     }
2528 fi
2529
2530 tmpfile(){
2531     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2532         (set -C; exec > $tmp) 2>/dev/null ||
2533         die "Unable to create temporary file in $TMPDIR."
2534     append TMPFILES $tmp
2535     eval $1=$tmp
2536 }
2537
2538 trap 'rm -f -- $TMPFILES' EXIT
2539
2540 tmpfile TMPASM .asm
2541 tmpfile TMPC   .c
2542 tmpfile TMPE   $EXESUF
2543 tmpfile TMPH   .h
2544 tmpfile TMPO   .o
2545 tmpfile TMPS   .S
2546 tmpfile TMPSH  .sh
2547 tmpfile TMPV   .ver
2548
2549 unset -f mktemp
2550
2551 chmod +x $TMPE
2552
2553 # make sure we can execute files in $TMPDIR
2554 cat > $TMPSH 2>> $logfile <<EOF
2555 #! /bin/sh
2556 EOF
2557 chmod +x $TMPSH >> $logfile 2>&1
2558 if ! $TMPSH >> $logfile 2>&1; then
2559     cat <<EOF
2560 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2561 variable to another directory and make sure that it is not mounted noexec.
2562 EOF
2563     die "Sanity test failed."
2564 fi
2565
2566 ccc_flags(){
2567     for flag; do
2568         case $flag in
2569             -std=c99)           echo -c99                       ;;
2570             -mcpu=*)            echo -arch ${flag#*=}           ;;
2571             -mieee)             echo -ieee                      ;;
2572             -O*|-fast)          echo $flag                      ;;
2573             -fno-math-errno)    echo -assume nomath_errno       ;;
2574             -g)                 echo -g3                        ;;
2575             -Wall)              echo -msg_enable level2         ;;
2576             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2577             -Wl,*)              echo $flag                      ;;
2578             -f*|-W*)                                            ;;
2579             *)                  echo $flag                      ;;
2580         esac
2581    done
2582 }
2583
2584 cparser_flags(){
2585     for flag; do
2586         case $flag in
2587             -Wno-switch)             echo -Wno-switch-enum ;;
2588             -Wno-format-zero-length) ;;
2589             -Wdisabled-optimization) ;;
2590             -Wno-pointer-sign)       echo -Wno-other ;;
2591             *)                       echo $flag ;;
2592         esac
2593     done
2594 }
2595
2596 msvc_common_flags(){
2597     for flag; do
2598         case $flag in
2599             # In addition to specifying certain flags under the compiler
2600             # specific filters, they must be specified here as well or else the
2601             # generic catch all at the bottom will print the original flag.
2602             -Wall)                ;;
2603             -std=c99)             ;;
2604             # Common flags
2605             -fomit-frame-pointer) ;;
2606             -g)                   echo -Z7 ;;
2607             -fno-math-errno)      ;;
2608             -fno-common)          ;;
2609             -fno-signed-zeros)    ;;
2610             -fPIC)                ;;
2611             -mthumb)              ;;
2612             -march=*)             ;;
2613             -lz)                  echo zlib.lib ;;
2614             -lavifil32)           echo vfw32.lib ;;
2615             -lavicap32)           echo vfw32.lib user32.lib ;;
2616             -l*)                  echo ${flag#-l}.lib ;;
2617             *)                    echo $flag ;;
2618         esac
2619     done
2620 }
2621
2622 msvc_flags(){
2623     msvc_common_flags "$@"
2624     for flag; do
2625         case $flag in
2626             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2627                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2628                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2629                                        -wd4273 ;;
2630         esac
2631     done
2632 }
2633
2634 icl_flags(){
2635     msvc_common_flags "$@"
2636     for flag; do
2637         case $flag in
2638             # Despite what Intel's documentation says -Wall, which is supported
2639             # on Windows, does enable remarks so disable them here.
2640             -Wall)                echo $flag -Qdiag-disable:remark ;;
2641             -std=c99)             echo -Qstd=c99 ;;
2642         esac
2643     done
2644 }
2645
2646 pgi_flags(){
2647     for flag; do
2648         case $flag in
2649             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2650             -fomit-frame-pointer) echo -Mnoframe ;;
2651             -g)                   echo -gopt ;;
2652             *)                    echo $flag ;;
2653         esac
2654     done
2655 }
2656
2657 suncc_flags(){
2658     for flag; do
2659         case $flag in
2660             -march=*|-mcpu=*)
2661                 case "${flag#*=}" in
2662                     native)                   echo -xtarget=native       ;;
2663                     v9|niagara)               echo -xarch=sparc          ;;
2664                     ultrasparc)               echo -xarch=sparcvis       ;;
2665                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2666                     i586|pentium)             echo -xchip=pentium        ;;
2667                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2668                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2669                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2670                     pentium4*)          echo -xtarget=pentium4           ;;
2671                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2672                     *-sse3)             echo -xarch=sse3                 ;;
2673                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2674                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2675                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2676                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2677                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2678                     k8|opteron|athlon64|athlon-fx)
2679                                                echo -xarch=sse2a         ;;
2680                     athlon*)                   echo -xarch=pentium_proa  ;;
2681                 esac
2682                 ;;
2683             -std=c99)             echo -xc99              ;;
2684             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2685             -fPIC)                echo -KPIC -xcode=pic32 ;;
2686             -W*,*)                echo $flag              ;;
2687             -f*-*|-W*|-mimpure-text)                      ;;
2688             -shared)              echo -G                 ;;
2689             *)                    echo $flag              ;;
2690         esac
2691     done
2692 }
2693
2694 tms470_flags(){
2695     for flag; do
2696         case $flag in
2697             -march=*|-mcpu=*)
2698                 case "${flag#*=}" in
2699                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2700                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2701                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2702                     armv6*|arm11*)          echo -mv=6   ;;
2703                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2704                                             echo -mv=5e  ;;
2705                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2706                 esac
2707                 ;;
2708             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2709             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2710             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2711             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2712             -msoft-float)   echo --float_support=vfplib       ;;
2713             -O[0-3]|-mf=*)  echo $flag                        ;;
2714             -g)             echo -g -mn                       ;;
2715             -pds=*)         echo $flag                        ;;
2716             -D*|-I*)        echo $flag                        ;;
2717             --gcc|--abi=*)  echo $flag                        ;;
2718             -me)            echo $flag                        ;;
2719         esac
2720     done
2721 }
2722
2723 probe_cc(){
2724     pfx=$1
2725     _cc=$2
2726
2727     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2728     unset _ld_o _ldflags _ld_lib _ld_path
2729     unset _depflags _DEPCMD _DEPFLAGS
2730     _flags_filter=echo
2731
2732     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2733         _type=llvm_gcc
2734         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2735         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2736         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2737         _cflags_speed='-O3'
2738         _cflags_size='-Os'
2739     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2740         _type=gcc
2741         gcc_version=$($_cc --version | head -n1)
2742         gcc_basever=$($_cc -dumpversion)
2743         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2744         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2745         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2746         if ! $_cc -dumpversion | grep -q '^2\.'; then
2747             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2748         fi
2749         _cflags_speed='-O3'
2750         _cflags_size='-Os'
2751     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2752         _type=icc
2753         _ident=$($_cc --version | head -n1)
2754         _depflags='-MMD'
2755         _cflags_speed='-O3'
2756         _cflags_size='-Os'
2757         _cflags_noopt='-O1'
2758     elif $_cc -v 2>&1 | grep -q xlc; then
2759         _type=xlc
2760         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2761         _cflags_speed='-O5'
2762         _cflags_size='-O5 -qcompact'
2763     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2764         _type=ccc
2765         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2766         _DEPFLAGS='-M'
2767         _cflags_speed='-fast'
2768         _cflags_size='-O1'
2769         _flags_filter=ccc_flags
2770     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2771         test -d "$sysroot" || die "No valid sysroot specified."
2772         _type=armcc
2773         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2774         armcc_conf="$PWD/armcc.conf"
2775         $_cc --arm_linux_configure                 \
2776              --arm_linux_config_file="$armcc_conf" \
2777              --configure_sysroot="$sysroot"        \
2778              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2779              die "Error creating armcc configuration file."
2780         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2781         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2782         as_default="${cross_prefix}gcc"
2783         _depflags='-MMD'
2784         _cflags_speed='-O3'
2785         _cflags_size='-Os'
2786     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2787         _type=tms470
2788         _ident=$($_cc -version | head -n1 | tr -s ' ')
2789         _flags='--gcc --abi=eabi -me'
2790         _cc_e='-ppl -fe=$@'
2791         _cc_o='-fe=$@'
2792         _depflags='-ppa -ppd=$(@:.o=.d)'
2793         _cflags_speed='-O3 -mf=5'
2794         _cflags_size='-O3 -mf=2'
2795         _flags_filter=tms470_flags
2796     elif $_cc -v 2>&1 | grep -q clang; then
2797         _type=clang
2798         _ident=$($_cc --version | head -n1)
2799         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2800         _cflags_speed='-O3'
2801         _cflags_size='-Os'
2802     elif $_cc -V 2>&1 | grep -q Sun; then
2803         _type=suncc
2804         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2805         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2806         _DEPFLAGS='-xM1 -xc99'
2807         _ldflags='-std=c99'
2808         _cflags_speed='-O5'
2809         _cflags_size='-O5 -xspace'
2810         _flags_filter=suncc_flags
2811     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2812         _type=pathscale
2813         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2814         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2815         _cflags_speed='-O2'
2816         _cflags_size='-Os'
2817         _flags_filter='filter_out -Wdisabled-optimization'
2818     elif $_cc -v 2>&1 | grep -q Open64; then
2819         _type=open64
2820         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2821         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2822         _cflags_speed='-O2'
2823         _cflags_size='-Os'
2824         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2825     elif $_cc -V 2>&1 | grep -q Portland; then
2826         _type=pgi
2827         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2828         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2829         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2830         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2831         _cflags_noopt="-O1"
2832         _flags_filter=pgi_flags
2833     elif $_cc 2>&1 | grep -q Microsoft; then
2834         _type=msvc
2835         _ident=$($cc 2>&1 | head -n1)
2836         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2837         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2838         _cflags_speed="-O2"
2839         _cflags_size="-O1"
2840         if $_cc 2>&1 | grep -q Linker; then
2841             _ld_o='-out:$@'
2842         else
2843             _ld_o='-Fe$@'
2844         fi
2845         _cc_o='-Fo$@'
2846         _cc_e='-P -Fi$@'
2847         _flags_filter=msvc_flags
2848         _ld_lib='lib%.a'
2849         _ld_path='-libpath:'
2850         _flags='-nologo'
2851         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2852         if [ $pfx = hostcc ]; then
2853             append _cflags -Dsnprintf=_snprintf
2854         fi
2855     elif $_cc 2>&1 | grep -q Intel; then
2856         _type=icl
2857         _ident=$($cc 2>&1 | head -n1)
2858         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2859         # Not only is O3 broken on 13.x+ but it is slower on all previous
2860         # versions (tested) as well.
2861         _cflags_speed="-O2"
2862         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2863         if $_cc 2>&1 | grep -q Linker; then
2864             _ld_o='-out:$@'
2865         else
2866             _ld_o='-Fe$@'
2867         fi
2868         _cc_o='-Fo$@'
2869         _cc_e='-P'
2870         _flags_filter=icl_flags
2871         _ld_lib='lib%.a'
2872         _ld_path='-libpath:'
2873         # -Qdiag-error to make icl error when seeing certain unknown arguments
2874         _flags='-nologo -Qdiag-error:4044,10157'
2875         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2876         # with MSVC which enables it by default.
2877         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2878         if [ $pfx = hostcc ]; then
2879             append _cflags -Dsnprintf=_snprintf
2880         fi
2881     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2882         _type=cparser
2883         _ident=$($_cc --version | head -n1)
2884         _depflags='-MMD'
2885         _cflags_speed='-O4'
2886         _cflags_size='-O2'
2887         _flags_filter=cparser_flags
2888     fi
2889
2890     eval ${pfx}_type=\$_type
2891     eval ${pfx}_ident=\$_ident
2892 }
2893
2894 set_ccvars(){
2895     eval ${1}_C=\${_cc_c-\${${1}_C}}
2896     eval ${1}_E=\${_cc_e-\${${1}_E}}
2897     eval ${1}_O=\${_cc_o-\${${1}_O}}
2898
2899     if [ -n "$_depflags" ]; then
2900         eval ${1}_DEPFLAGS=\$_depflags
2901     else
2902         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2903         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2904         eval DEP${1}FLAGS=\$_flags
2905     fi
2906 }
2907
2908 probe_cc cc "$cc"
2909 cflags_filter=$_flags_filter
2910 cflags_speed=$_cflags_speed
2911 cflags_size=$_cflags_size
2912 cflags_noopt=$_cflags_noopt
2913 add_cflags $_flags $_cflags
2914 cc_ldflags=$_ldflags
2915 set_ccvars CC
2916
2917 probe_cc hostcc "$host_cc"
2918 host_cflags_filter=$_flags_filter
2919 add_host_cflags  $_flags $_cflags
2920 set_ccvars HOSTCC
2921
2922 test -n "$cc_type" && enable $cc_type ||
2923     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2924
2925 : ${as_default:=$cc}
2926 : ${dep_cc_default:=$cc}
2927 : ${ld_default:=$cc}
2928 : ${host_ld_default:=$host_cc}
2929 set_default ar as dep_cc ld host_ld
2930
2931 probe_cc as "$as"
2932 asflags_filter=$_flags_filter
2933 add_asflags $_flags $_cflags
2934 set_ccvars AS
2935
2936 probe_cc ld "$ld"
2937 ldflags_filter=$_flags_filter
2938 add_ldflags $_flags $_ldflags
2939 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2940 LD_O=${_ld_o-$LD_O}
2941 LD_LIB=${_ld_lib-$LD_LIB}
2942 LD_PATH=${_ld_path-$LD_PATH}
2943
2944 probe_cc hostld "$host_ld"
2945 host_ldflags_filter=$_flags_filter
2946 add_host_ldflags $_flags $_ldflags
2947 HOSTLD_O=${_ld_o-$HOSTLD_O}
2948
2949 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2950     probe_cc depcc "$dep_cc"
2951     CCDEP=${_DEPCMD:-$DEPCMD}
2952     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2953     DEPCCFLAGS=$_flags
2954 fi
2955
2956 if $ar 2>&1 | grep -q Microsoft; then
2957     arflags="-nologo"
2958     ar_o='-out:$@'
2959 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2960     arflags="rq"
2961     ar_o='$@'
2962 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2963     arflags='-Xany -r -c'
2964     ar_o='$@'
2965 else
2966     arflags="rc"
2967     ar_o='$@'
2968 fi
2969
2970 add_cflags $extra_cflags
2971 add_asflags $extra_cflags
2972
2973 if test -n "$sysroot"; then
2974     case "$cc_type" in
2975         gcc|llvm_gcc|clang)
2976             add_cppflags --sysroot="$sysroot"
2977             add_ldflags --sysroot="$sysroot"
2978         ;;
2979         tms470)
2980             add_cppflags -I"$sysinclude"
2981             add_ldflags  --sysroot="$sysroot"
2982         ;;
2983     esac
2984 fi
2985
2986 if test "$cpu" = host; then
2987     enabled cross_compile &&
2988         die "--cpu=host makes no sense when cross-compiling."
2989
2990     case "$cc_type" in
2991         gcc|llvm_gcc)
2992             check_native(){
2993                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2994                 sed -n "/cc1.*$1=/{
2995                             s/.*$1=\\([^ ]*\\).*/\\1/
2996                             p
2997                             q
2998                         }" $TMPE
2999             }
3000             cpu=$(check_native -march || check_native -mcpu)
3001         ;;
3002     esac
3003
3004     test "${cpu:-host}" = host &&
3005         die "--cpu=host not supported with compiler $cc"
3006 fi
3007
3008 # Deal with common $arch aliases
3009 case "$arch" in
3010     aarch64|arm64)
3011         arch="aarch64"
3012     ;;
3013     arm*)
3014         arch="arm"
3015     ;;
3016     mips*|IP*)
3017         arch="mips"
3018     ;;
3019     parisc*|hppa*)
3020         arch="parisc"
3021     ;;
3022     "Power Macintosh"|ppc*|powerpc*)
3023         arch="ppc"
3024     ;;
3025     s390|s390x)
3026         arch="s390"
3027     ;;
3028     sh4|sh)
3029         arch="sh4"
3030     ;;
3031     sun4u|sparc*)
3032         arch="sparc"
3033     ;;
3034     tilegx|tile-gx)
3035         arch="tilegx"
3036     ;;
3037     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3038         arch="x86"
3039     ;;
3040 esac
3041
3042 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3043 enable $arch
3044
3045 # Add processor-specific flags
3046 if enabled aarch64; then
3047
3048     case $cpu in
3049         armv*)
3050             cpuflags="-march=$cpu"
3051         ;;
3052         *)
3053             cpuflags="-mcpu=$cpu"
3054         ;;
3055     esac
3056
3057 elif enabled alpha; then
3058
3059     cpuflags="-mcpu=$cpu"
3060
3061 elif enabled arm; then
3062
3063     check_arm_arch() {
3064         check_cpp_condition stddef.h \
3065             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3066             $cpuflags
3067     }
3068
3069     probe_arm_arch() {
3070         if   check_arm_arch 4;        then echo armv4;
3071         elif check_arm_arch 4T;       then echo armv4t;
3072         elif check_arm_arch 5;        then echo armv5;
3073         elif check_arm_arch 5E;       then echo armv5e;
3074         elif check_arm_arch 5T;       then echo armv5t;
3075         elif check_arm_arch 5TE;      then echo armv5te;
3076         elif check_arm_arch 5TEJ;     then echo armv5te;
3077         elif check_arm_arch 6;        then echo armv6;
3078         elif check_arm_arch 6J;       then echo armv6j;
3079         elif check_arm_arch 6K;       then echo armv6k;
3080         elif check_arm_arch 6Z;       then echo armv6z;
3081         elif check_arm_arch 6ZK;      then echo armv6zk;
3082         elif check_arm_arch 6T2;      then echo armv6t2;
3083         elif check_arm_arch 7;        then echo armv7;
3084         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3085         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3086         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3087         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3088         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3089         fi
3090     }
3091
3092     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3093
3094     case $cpu in
3095         armv*)
3096             cpuflags="-march=$cpu"
3097             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3098         ;;
3099         *)
3100             cpuflags="-mcpu=$cpu"
3101             case $cpu in
3102                 cortex-a*)                               subarch=armv7a  ;;
3103                 cortex-r*)                               subarch=armv7r  ;;
3104                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3105                 arm11*)                                  subarch=armv6   ;;
3106                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3107                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3108                 *)                             subarch=$(probe_arm_arch) ;;
3109             esac
3110         ;;
3111     esac
3112
3113     case "$subarch" in
3114         armv5t*)    enable fast_clz                ;;
3115         armv[6-8]*) enable fast_clz fast_unaligned ;;
3116     esac
3117
3118 elif enabled avr32; then
3119
3120     case $cpu in
3121         ap7[02]0[0-2])
3122             subarch="avr32_ap"
3123             cpuflags="-mpart=$cpu"
3124         ;;
3125         ap)
3126             subarch="avr32_ap"
3127             cpuflags="-march=$cpu"
3128         ;;
3129         uc3[ab]*)
3130             subarch="avr32_uc"
3131             cpuflags="-mcpu=$cpu"
3132         ;;
3133         uc)
3134             subarch="avr32_uc"
3135             cpuflags="-march=$cpu"
3136         ;;
3137     esac
3138
3139 elif enabled bfin; then
3140
3141     cpuflags="-mcpu=$cpu"
3142
3143 elif enabled mips; then
3144
3145     cpuflags="-march=$cpu"
3146
3147 elif enabled ppc; then
3148
3149     disable ldbrx
3150
3151     case $(tolower $cpu) in
3152         601|ppc601|powerpc601)
3153             cpuflags="-mcpu=601"
3154             disable altivec
3155         ;;
3156         603*|ppc603*|powerpc603*)
3157             cpuflags="-mcpu=603"
3158             disable altivec
3159         ;;
3160         604*|ppc604*|powerpc604*)
3161             cpuflags="-mcpu=604"
3162             disable altivec
3163         ;;
3164         g3|75*|ppc75*|powerpc75*)
3165             cpuflags="-mcpu=750"
3166             disable altivec
3167         ;;
3168         g4|745*|ppc745*|powerpc745*)
3169             cpuflags="-mcpu=7450"
3170         ;;
3171         74*|ppc74*|powerpc74*)
3172             cpuflags="-mcpu=7400"
3173         ;;
3174         g5|970|ppc970|powerpc970)
3175             cpuflags="-mcpu=970"
3176         ;;
3177         power[3-7]*)
3178             cpuflags="-mcpu=$cpu"
3179         ;;
3180         cell)
3181             cpuflags="-mcpu=cell"
3182             enable ldbrx
3183         ;;
3184         e500mc)
3185             cpuflags="-mcpu=e500mc"
3186             disable altivec
3187         ;;
3188         e500v2)
3189             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3190             disable altivec
3191             disable dcbzl
3192         ;;
3193         e500)
3194             cpuflags="-mcpu=8540 -mhard-float"
3195             disable altivec
3196             disable dcbzl
3197         ;;
3198     esac
3199
3200 elif enabled sparc; then
3201
3202     case $cpu in
3203         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3204             cpuflags="-mcpu=$cpu"
3205         ;;
3206         ultrasparc*|niagara[234])
3207             cpuflags="-mcpu=$cpu"
3208         ;;
3209     esac
3210
3211 elif enabled x86; then
3212
3213     case $cpu in
3214         i[345]86|pentium)
3215             cpuflags="-march=$cpu"
3216             disable mmx
3217         ;;
3218         # targets that do NOT support nopl and conditional mov (cmov)
3219         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3220             cpuflags="-march=$cpu"
3221             disable i686
3222         ;;
3223         # targets that do support nopl and conditional mov (cmov)
3224         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3225             cpuflags="-march=$cpu"
3226             enable i686
3227             enable fast_cmov
3228         ;;
3229         # targets that do support conditional mov but on which it's slow
3230         pentium4|pentium4m|prescott|nocona)
3231             cpuflags="-march=$cpu"
3232             enable i686
3233             disable fast_cmov
3234         ;;
3235     esac
3236
3237 fi
3238
3239 if [ "$cpu" != generic ]; then
3240     add_cflags  $cpuflags
3241     add_asflags $cpuflags
3242 fi
3243
3244 # compiler sanity check
3245 check_exec <<EOF
3246 int main(void){ return 0; }
3247 EOF
3248 if test "$?" != 0; then
3249     echo "$cc is unable to create an executable file."
3250     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3251         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3252         echo "Only do this if you know what cross compiling means."
3253     fi
3254     die "C compiler test failed."
3255 fi
3256
3257 add_cppflags -D_ISOC99_SOURCE
3258 check_cflags -std=c99
3259 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3260 #include <stdlib.h>
3261 EOF
3262 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3263 #include <stdlib.h>
3264 EOF
3265
3266 add_host_cppflags -D_ISOC99_SOURCE
3267 check_host_cflags -std=c99
3268 check_host_cflags -Wall
3269 check_host_cflags -O3
3270
3271 check_64bit(){
3272     arch32=$1
3273     arch64=$2
3274     expr=$3
3275     check_code cc "" "int test[2*($expr) - 1]" &&
3276         subarch=$arch64 || subarch=$arch32
3277 }
3278
3279 case "$arch" in
3280     aarch64|alpha|ia64)
3281         spic=$shared
3282     ;;
3283     mips)
3284         check_64bit mips mips64 '_MIPS_SIM > 1'
3285         spic=$shared
3286     ;;
3287     parisc)
3288         check_64bit parisc parisc64 'sizeof(void *) > 4'
3289         spic=$shared
3290     ;;
3291     ppc)
3292         check_64bit ppc ppc64 'sizeof(void *) > 4'
3293         spic=$shared
3294     ;;
3295     s390)
3296         check_64bit s390 s390x 'sizeof(void *) > 4'
3297         spic=$shared
3298     ;;
3299     sparc)
3300         check_64bit sparc sparc64 'sizeof(void *) > 4'
3301         spic=$shared
3302     ;;
3303     x86)
3304         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3305         if test "$subarch" = "x86_64"; then
3306             spic=$shared
3307         fi
3308     ;;
3309 esac
3310
3311 enable $subarch
3312 enabled spic && enable_weak pic
3313
3314 # OS specific
3315 case $target_os in
3316     aix)
3317         SHFLAGS=-shared
3318         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3319         enabled shared && add_ldflags -Wl,-brtl
3320         ;;
3321     haiku)
3322         prefix_default="/boot/common"
3323         network_extralibs="-lnetwork"
3324         host_libs=
3325         ;;
3326     sunos)
3327         SHFLAGS='-shared -Wl,-h,$$(@F)'
3328         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3329         network_extralibs="-lsocket -lnsl"
3330         # When using suncc to build, the Solaris linker will mark
3331         # an executable with each instruction set encountered by
3332         # the Solaris assembler.  As our libraries contain their own
3333         # guards for processor-specific code, instead suppress
3334         # generation of the HWCAPS ELF section on Solaris x86 only.
3335         enabled_all suncc x86 &&
3336             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3337             add_ldflags -Wl,-M,mapfile
3338         nm_default='nm -P -g'
3339         ;;
3340     netbsd)
3341         disable symver
3342         oss_indev_extralibs="-lossaudio"
3343         oss_outdev_extralibs="-lossaudio"
3344         ;;
3345     openbsd|bitrig)
3346         disable symver
3347         SHFLAGS='-shared'
3348         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3349         SLIB_INSTALL_LINKS=
3350         oss_indev_extralibs="-lossaudio"
3351         oss_outdev_extralibs="-lossaudio"
3352         ;;
3353     dragonfly)
3354         disable symver
3355         ;;
3356     freebsd)
3357         ;;
3358     bsd/os)
3359         add_extralibs -lpoll -lgnugetopt
3360         ;;
3361     darwin)
3362         gas="gas-preprocessor.pl $cc"
3363         enabled ppc && add_asflags -force_cpusubtype_ALL
3364         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3365         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3366         add_ldflags -Wl,-dynamic,-search_paths_first
3367         SLIBSUF=".dylib"
3368         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3369         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3370         objformat="macho"
3371         enabled x86_64 && objformat="macho64"
3372         enabled_any pic shared ||
3373             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3374         ;;
3375     mingw32*)
3376         if test $target_os = "mingw32ce"; then
3377             disable network
3378         else
3379             target_os=mingw32
3380         fi
3381         LIBTARGET=i386
3382         if enabled x86_64; then
3383             LIBTARGET="i386:x86-64"
3384         elif enabled arm; then
3385             LIBTARGET=arm-wince
3386         fi
3387         check_ldflags -Wl,--nxcompat
3388         check_ldflags -Wl,--dynamicbase
3389         shlibdir_default="$bindir_default"
3390         SLIBPREF=""
3391         SLIBSUF=".dll"
3392         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3393         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3394         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3395         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3396         SLIB_INSTALL_LINKS=
3397         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3398         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3399         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3400         objformat="win32"
3401         dlltool="${cross_prefix}dlltool"
3402         ranlib=:
3403         enable dos_paths
3404         ;;
3405     win32|win64)
3406         disable symver
3407         if enabled shared; then
3408             # Link to the import library instead of the normal static library
3409             # for shared libs.
3410             LD_LIB='%.lib'
3411             # Cannot build both shared and static libs with MSVC or icl.
3412             disable static
3413         fi
3414         shlibdir_default="$bindir_default"
3415         SLIBPREF=""
3416         SLIBSUF=".dll"
3417         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3418         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3419         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3420         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3421         SLIB_INSTALL_LINKS=
3422         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3423         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3424         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3425         objformat="win32"
3426         ranlib=:
3427         enable dos_paths
3428         ;;
3429     cygwin*)
3430         target_os=cygwin
3431         shlibdir_default="$bindir_default"
3432         SLIBPREF="cyg"
3433         SLIBSUF=".dll"
3434         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3435         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3436         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3437         SLIB_INSTALL_LINKS=
3438         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3439         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3440         objformat="win32"
3441         enable dos_paths
3442         ;;
3443     *-dos|freedos|opendos)
3444         network_extralibs="-lsocket"
3445         objformat="coff"
3446         enable dos_paths
3447         add_cppflags -U__STRICT_ANSI__
3448         ;;
3449     linux)
3450         enable dv1394
3451         ;;
3452     irix*)
3453         target_os=irix
3454         ranlib="echo ignoring ranlib"
3455         ;;
3456     os/2*)
3457         ln_s="cp -f"
3458         objformat="aout"
3459         add_cppflags -D_GNU_SOURCE
3460         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3461         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3462         LIBSUF="_s.a"
3463         SLIBPREF=""
3464         SLIBSUF=".dll"
3465         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3466         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3467         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3468             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3469             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3470             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3471             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3472             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3473         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3474             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3475         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3476         enable dos_paths
3477         ;;
3478     gnu/kfreebsd)
3479         add_cppflags -D_BSD_SOURCE
3480         ;;
3481     gnu)
3482         ;;
3483     qnx)
3484         add_cppflags -D_QNX_SOURCE
3485         network_extralibs="-lsocket"
3486         ;;
3487     symbian)
3488         SLIBSUF=".dll"
3489         enable dos_paths
3490         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3491         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3492         add_ldflags -Wl,--target1-abs,--no-undefined \
3493                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3494                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3495         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3496                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3497                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3498         ;;
3499     osf1)
3500         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3501         ;;
3502     minix)
3503         ;;
3504     plan9)
3505         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3506                      -D_REENTRANT_SOURCE        \
3507                      -D_RESEARCH_SOURCE         \
3508                      -DFD_SETSIZE=96            \
3509                      -DHAVE_SOCK_OPTS
3510         add_compat strtod.o strtod=avpriv_strtod
3511         network_extralibs='-lbsd'
3512         exeobjs=compat/plan9/main.o
3513         disable avserver
3514         cp_f='cp'
3515         ;;
3516     none)
3517         ;;
3518     *)
3519         die "Unknown OS '$target_os'."
3520         ;;
3521 esac
3522
3523 # determine libc flavour
3524
3525 probe_libc(){
3526     pfx=$1
3527     pfx_no_=${pfx%_}
3528     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3529     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3530         eval ${pfx}libc_type=uclibc
3531         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3532     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3533         eval ${pfx}libc_type=glibc
3534         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3535     # MinGW headers can be installed on Cygwin, so check for newlib first.
3536     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3537         eval ${pfx}libc_type=newlib
3538         add_${pfx}cppflags -U__STRICT_ANSI__
3539     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3540     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3541         eval ${pfx}libc_type=mingw64
3542         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3543         eval test \$${pfx_no_}cc_type = "gcc" &&
3544             add_${pfx}cppflags -D__printf__=__gnu_printf__
3545     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3546          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3547         eval ${pfx}libc_type=mingw32
3548         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3549             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3550             die "ERROR: MinGW32 runtime version must be >= 3.15."
3551         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3552         eval test \$${pfx_no_}cc_type = "gcc" &&
3553             add_${pfx}cppflags -D__printf__=__gnu_printf__
3554     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3555         eval ${pfx}libc_type=msvcrt
3556         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3557         # 0x601 by default unless something else is set by the user.
3558         # This can easily lead to us detecting functions only present
3559         # in such new versions and producing binaries requiring windows 7.0.
3560         # Therefore explicitly set the default to XP unless the user has
3561         # set something else on the command line.
3562         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3563             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3564     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3565         eval ${pfx}libc_type=klibc
3566     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3567         eval ${pfx}libc_type=bionic
3568     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3569         eval ${pfx}libc_type=solaris
3570         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3571     fi
3572 }
3573
3574 probe_libc
3575 test -n "$libc_type" && enable libc_$libc_type
3576 probe_libc host_
3577 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3578
3579 case $libc_type in
3580     bionic)
3581         add_compat strtod.o strtod=avpriv_strtod
3582         ;;
3583     msvcrt)
3584         add_compat strtod.o strtod=avpriv_strtod
3585         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3586                                      _snprintf=avpriv_snprintf  \
3587                                      vsnprintf=avpriv_vsnprintf
3588         ;;
3589 esac
3590
3591 # hacks for compiler/libc/os combinations
3592
3593 if enabled_all tms470 libc_glibc; then
3594     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3595     add_cppflags -D__USER_LABEL_PREFIX__=
3596     add_cppflags -D__builtin_memset=memset
3597     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3598     add_cflags   -pds=48    # incompatible redefinition of macro
3599 fi
3600
3601 if enabled_all ccc libc_glibc; then
3602     add_ldflags -Wl,-z,now  # calls to libots crash without this
3603 fi
3604
3605 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3606     add_cppflags '-I\$(SRC_PATH)/compat/float'
3607
3608 esc(){
3609     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3610 }
3611
3612 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3613
3614 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3615
3616 set_default $PATHS_LIST
3617 set_default nm
3618
3619 # we need to build at least one lib type
3620 if ! enabled_any static shared; then
3621     cat <<EOF
3622 At least one library type must be built.
3623 Specify --enable-static to build the static libraries or --enable-shared to
3624 build the shared libraries as well. To only build the shared libraries specify
3625 --disable-static in addition to --enable-shared.
3626 EOF
3627     exit 1;
3628 fi
3629
3630 die_license_disabled() {
3631     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3632 }
3633
3634 die_license_disabled gpl libcdio
3635 die_license_disabled gpl libx264
3636 die_license_disabled gpl libx265
3637 die_license_disabled gpl libxavs
3638 die_license_disabled gpl libxvid
3639 die_license_disabled gpl x11grab
3640
3641 die_license_disabled nonfree libfaac
3642 die_license_disabled nonfree libfdk_aac
3643 die_license_disabled nonfree openssl
3644
3645 die_license_disabled version3 libopencore_amrnb
3646 die_license_disabled version3 libopencore_amrwb
3647 die_license_disabled version3 libvo_aacenc
3648 die_license_disabled version3 libvo_amrwbenc
3649
3650 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3651
3652 disabled optimizations || check_cflags -fomit-frame-pointer
3653
3654 enable_weak_pic() {
3655     disabled pic && return
3656     enable pic
3657     add_cppflags -DPIC
3658     case "$target_os" in
3659     mingw*|cygwin*)
3660         ;;
3661     *)
3662         add_cflags -fPIC
3663         ;;
3664     esac
3665     add_asflags  -fPIC
3666 }
3667
3668 enabled pic && enable_weak_pic
3669
3670 check_cc <<EOF || die "Symbol mangling check failed."
3671 int ff_extern;
3672 EOF
3673 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3674 extern_prefix=${sym%%ff_extern*}
3675
3676 check_cc <<EOF && enable_weak inline_asm
3677 void foo(void) { __asm__ volatile ("" ::); }
3678 EOF
3679
3680 _restrict=
3681 for restrict_keyword in restrict __restrict__ __restrict; do
3682     check_cc <<EOF && _restrict=$restrict_keyword && break
3683 void foo(char * $restrict_keyword p);
3684 EOF
3685 done
3686
3687 check_cc <<EOF && enable pragma_deprecated
3688 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3689 EOF
3690
3691 check_cc <<EOF && enable attribute_packed
3692 struct { int x; } __attribute__((packed)) x;
3693 EOF
3694
3695 check_cc <<EOF && enable attribute_may_alias
3696 union { int x; } __attribute__((may_alias)) x;
3697 EOF
3698
3699 check_cc <<EOF || die "endian test failed"
3700 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3701 EOF
3702 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3703
3704 check_inline_asm inline_asm_labels '"1:\n"'
3705
3706 if enabled aarch64; then
3707     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3708     # internal assembler in clang 3.3 does not support this instruction
3709     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3710     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3711
3712     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3713
3714 elif enabled alpha; then
3715
3716     check_cflags -mieee
3717
3718 elif enabled arm; then
3719
3720     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3721     enabled thumb && check_cflags -mthumb || check_cflags -marm
3722     nogas=die
3723
3724     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3725         enable vfp_args
3726     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3727         case "${cross_prefix:-$cc}" in
3728             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3729             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3730 __asm__ (".eabi_attribute 28, 1");
3731 int main(void) { return 0; }
3732 EOF
3733         esac
3734         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3735     fi
3736
3737     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3738     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3739     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3740     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3741     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3742     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3743
3744     [ $target_os = linux ] ||
3745         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3746             $ARCH_EXT_LIST_ARM
3747
3748     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3749
3750     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3751
3752 elif enabled mips; then
3753
3754     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3755
3756 elif enabled parisc; then
3757
3758     if enabled gcc; then
3759         case $($cc -dumpversion) in
3760             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3761         esac
3762     fi
3763
3764 elif enabled ppc; then
3765
3766     enable local_aligned_8 local_aligned_16
3767
3768     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3769     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3770     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3771     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3772
3773     # AltiVec flags: The FSF version of GCC differs from the Apple version
3774     if enabled altivec; then
3775         nogas=warn
3776         check_cflags -maltivec -mabi=altivec &&
3777         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3778         check_cflags -faltivec
3779
3780         # check if our compiler supports Motorola AltiVec C API
3781         check_cc <<EOF || disable altivec
3782 $inc_altivec_h
3783 int main(void) {
3784     vector signed int v1 = (vector signed int) { 0 };
3785     vector signed int v2 = (vector signed int) { 1 };
3786     v1 = vec_add(v1, v2);
3787     return 0;
3788 }
3789 EOF
3790
3791         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3792     fi
3793
3794 elif enabled x86; then
3795
3796     check_builtin rdtsc    intrin.h   "__rdtsc()"
3797     check_builtin mm_empty mmintrin.h "_mm_empty()"
3798
3799     enable local_aligned_8 local_aligned_16
3800
3801     # check whether EBP is available on x86
3802     # As 'i' is stored on the stack, this program will crash
3803     # if the base pointer is used to access it because the
3804     # base pointer is cleared in the inline assembly code.
3805     check_exec_crash <<EOF && enable ebp_available
3806 volatile int i=0;
3807 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3808 return i;
3809 EOF
3810
3811     # check whether EBX is available on x86
3812     check_inline_asm ebx_available '""::"b"(0)' &&
3813         check_inline_asm ebx_available '"":::"%ebx"'
3814
3815     # check whether xmm clobbers are supported
3816     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3817
3818     # check whether binutils is new enough to compile SSSE3/MMXEXT
3819     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3820     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3821
3822     if ! disabled_any asm mmx yasm; then
3823         if check_cmd $yasmexe --version; then
3824             enabled x86_64 && yasm_extra="-m amd64"
3825             yasm_debug="-g dwarf2"
3826         elif check_cmd nasm -v; then
3827             yasmexe=nasm
3828             yasm_debug="-g -F dwarf"
3829             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3830         fi
3831
3832         YASMFLAGS="-f $objformat $yasm_extra"
3833         enabled pic               && append YASMFLAGS "-DPIC"
3834         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3835         case "$objformat" in
3836             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3837         esac
3838
3839         check_yasm "movbe ecx, [5]" && enable yasm ||
3840             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3841         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3842         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3843         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3844         check_yasm "CPU amdnop" || disable cpunop
3845     fi
3846
3847     case "$cpu" in
3848         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3849             disable fast_clz
3850         ;;
3851     esac
3852
3853 fi
3854
3855 if enabled asm; then
3856     as=${gas:=$as}
3857     check_as <<EOF && enable gnu_as || \
3858         $nogas "GNU assembler not found, install gas-preprocessor"
3859 .macro m n
3860 \n: .int 0
3861 .endm
3862 m x
3863 EOF
3864 fi
3865
3866 check_ldflags -Wl,--as-needed
3867
3868 if check_func dlopen; then
3869     ldl=
3870 elif check_func dlopen -ldl; then
3871     ldl=-ldl
3872 fi
3873
3874 if ! disabled network; then
3875     check_func getaddrinfo $network_extralibs
3876     check_func getservbyport $network_extralibs
3877     check_func inet_aton $network_extralibs
3878
3879     check_type netdb.h "struct addrinfo"
3880     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3881     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3882     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3883     check_type poll.h "struct pollfd"
3884     check_type netinet/sctp.h "struct sctp_event_subscribe"
3885     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3886     check_type netinet/in.h "struct sockaddr_in6"
3887     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3888     check_type "sys/types.h sys/socket.h" socklen_t
3889
3890     # Prefer arpa/inet.h over winsock2
3891     if check_header arpa/inet.h ; then
3892         check_func closesocket
3893     elif check_header winsock2.h ; then
3894         check_func_headers winsock2.h closesocket -lws2 &&
3895             network_extralibs="-lws2" ||
3896         { check_func_headers winsock2.h closesocket -lws2_32 &&
3897             network_extralibs="-lws2_32"; } || disable winsock2_h network
3898         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3899
3900         check_type ws2tcpip.h socklen_t
3901         check_type ws2tcpip.h "struct addrinfo"
3902         check_type ws2tcpip.h "struct group_source_req"
3903         check_type ws2tcpip.h "struct ip_mreq_source"
3904         check_type ws2tcpip.h "struct ipv6_mreq"
3905         check_type winsock2.h "struct pollfd"
3906         check_struct winsock2.h "struct sockaddr" sa_len
3907         check_type ws2tcpip.h "struct sockaddr_in6"
3908         check_type ws2tcpip.h "struct sockaddr_storage"
3909     else
3910         disable network
3911     fi
3912 fi
3913
3914 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3915 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3916 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3917 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3918
3919 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3920 check_func  ${malloc_prefix}memalign            && enable memalign
3921 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3922
3923 check_func  fcntl
3924 check_func  fork
3925 check_func  gethrtime
3926 check_func  getopt
3927 check_func  getrusage
3928 check_func  gettimeofday
3929 check_func  isatty
3930 check_func  localtime_r
3931 check_func  mach_absolute_time
3932 check_func  mkstemp
3933 check_func  mmap
3934 check_func  mprotect
3935 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3936 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3937 check_func  sched_getaffinity
3938 check_func  setrlimit
3939 check_func  strerror_r
3940 check_func  strptime
3941 check_func  sysconf
3942 check_func  sysctl
3943 check_func  usleep
3944
3945 check_func_headers io.h setmode
3946 check_func_headers stdlib.h getenv
3947
3948 check_func_headers windows.h GetProcessAffinityMask
3949 check_func_headers windows.h GetProcessTimes
3950 check_func_headers windows.h GetSystemTimeAsFileTime
3951 check_func_headers windows.h MapViewOfFile
3952 check_func_headers windows.h SetConsoleTextAttribute
3953 check_func_headers windows.h Sleep
3954 check_func_headers windows.h VirtualAlloc
3955
3956 check_header direct.h
3957 check_header dlfcn.h
3958 check_header dxva.h
3959 check_header dxva2api.h
3960 check_header io.h
3961 check_header mach/mach_time.h
3962 check_header malloc.h
3963 check_header poll.h
3964 check_header sys/mman.h
3965 check_header sys/param.h
3966 check_header sys/resource.h
3967 check_header sys/select.h
3968 check_header sys/time.h
3969 check_header sys/un.h
3970 check_header unistd.h
3971 check_header vdpau/vdpau.h
3972 check_header vdpau/vdpau_x11.h
3973 check_header VideoDecodeAcceleration/VDADecoder.h
3974 check_header windows.h
3975 check_header X11/extensions/XvMClib.h
3976
3977 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3978 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3979 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3980
3981 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3982
3983 if ! disabled w32threads && ! enabled pthreads; then
3984     check_func_headers "windows.h process.h" _beginthreadex &&
3985         enable w32threads || disable w32threads
3986 fi
3987
3988 # check for some common methods of building with pthread support
3989 # do this before the optional library checks as some of them require pthreads
3990 if ! disabled pthreads && ! enabled w32threads; then
3991     enable pthreads
3992     if check_func pthread_join -pthread; then
3993         add_cflags -pthread
3994         add_extralibs -pthread
3995     elif check_func pthread_join -pthreads; then
3996         add_cflags -pthreads
3997         add_extralibs -pthreads
3998     elif check_func pthread_join -lpthreadGC2; then
3999         add_extralibs -lpthreadGC2
4000     elif check_lib pthread.h pthread_join -lpthread; then
4001         :
4002     elif ! check_func pthread_join; then
4003         disable pthreads
4004     fi
4005 fi
4006
4007 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4008 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4009
4010 check_lib math.h sin -lm && LIBM="-lm"
4011 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4012
4013 atan2f_args=2
4014 ldexpf_args=2
4015 powf_args=2
4016
4017 for func in $MATH_FUNCS; do
4018     eval check_mathfunc $func \${${func}_args:-1}
4019 done
4020
4021 # these are off by default, so fail if requested and not available
4022 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4023                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4024                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4025 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4026 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4027 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4028 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4029 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4030 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4031 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4032                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4033                                done || die "ERROR: libgsm not found"; }
4034 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4035 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4036 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4037 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4038 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4039 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4040                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4041 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4042 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4043 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4044 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4045 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4046 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4047 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4048 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4049 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4050 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4051 enabled libvpx            && {
4052     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4053                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4054     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4055                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4056     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4057     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4058 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4059 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4060 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4061                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4062                                die "ERROR: libx264 version must be >= 0.118."; }
4063 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4064                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4065                                die "ERROR: libx265 version must be >= 13."; }
4066 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4067 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4068 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4069                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4070                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4071                                die "ERROR: openssl not found"; }
4072
4073 if enabled gnutls; then
4074     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4075     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4076 fi
4077
4078 # libdc1394 check
4079 if enabled libdc1394; then
4080     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4081         enable libdc1394_2; } ||
4082     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4083         enable libdc1394_1; } ||
4084     die "ERROR: No version of libdc1394 found "
4085 fi
4086
4087 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4088     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4089     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4090     enable sdl
4091 fi
4092
4093 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4094 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4095
4096 check_header linux/fb.h
4097 check_header linux/videodev2.h
4098 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4099
4100 check_header sys/videoio.h
4101
4102 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4103 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4104 # w32api 3.12 had it defined wrong
4105 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4106
4107 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4108 { check_header dev/bktr/ioctl_meteor.h &&
4109   check_header dev/bktr/ioctl_bt848.h; } ||
4110 { check_header machine/ioctl_meteor.h &&
4111   check_header machine/ioctl_bt848.h; } ||
4112 { check_header dev/video/meteor/ioctl_meteor.h &&
4113   check_header dev/video/bktr/ioctl_bt848.h; } ||
4114 check_header dev/ic/bt8xx.h
4115
4116 check_header sndio.h
4117 check_header sys/soundcard.h
4118 check_header soundcard.h
4119
4120 enabled_any alsa_indev alsa_outdev &&
4121     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4122
4123 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4124     check_func jack_port_get_latency_range -ljack
4125
4126 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4127
4128 if enabled libcdio; then
4129     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4130     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4131 fi
4132
4133 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4134
4135 enabled x11grab                                           &&
4136 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4137 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4138 { enabled xlib || die "ERROR: Xlib not found"; }
4139
4140 enabled vdpau &&
4141     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4142     disable vdpau
4143
4144 enabled vdpau && enabled xlib &&
4145     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4146     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4147     enable vdpau_x11
4148
4149 enabled dxva2 &&
4150     prepend avconv_libs $($ldflags_filter "-lole32")
4151
4152 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4153
4154 # add some useful compiler flags if supported
4155 check_cflags -Wdeclaration-after-statement
4156 check_cflags -Wall
4157 check_cflags -Wdisabled-optimization
4158 check_cflags -Wpointer-arith
4159 check_cflags -Wredundant-decls
4160 check_cflags -Wcast-qual
4161 check_cflags -Wwrite-strings
4162 check_cflags -Wtype-limits
4163 check_cflags -Wundef
4164 check_cflags -Wmissing-prototypes
4165 check_cflags -Wstrict-prototypes
4166 enabled extra_warnings && check_cflags -Winline
4167
4168 check_disable_warning(){
4169     warning_flag=-W${1#-Wno-}
4170     test_cflags $warning_flag && add_cflags $1
4171 }
4172
4173 check_disable_warning -Wno-parentheses
4174 check_disable_warning -Wno-switch
4175 check_disable_warning -Wno-format-zero-length
4176 check_disable_warning -Wno-pointer-sign
4177
4178 # add some linker flags
4179 check_ldflags -Wl,--warn-common
4180 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4181 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4182
4183 # add some strip flags
4184 # -wN '..@*' is more selective than -x, but not available everywhere.
4185 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4186
4187 enabled neon_clobber_test &&
4188     check_ldflags -Wl,--wrap,avcodec_open2              \
4189                   -Wl,--wrap,avcodec_decode_audio4      \
4190                   -Wl,--wrap,avcodec_decode_video2      \
4191                   -Wl,--wrap,avcodec_decode_subtitle2   \
4192                   -Wl,--wrap,avcodec_encode_audio2      \
4193                   -Wl,--wrap,avcodec_encode_video2      \
4194                   -Wl,--wrap,avcodec_encode_subtitle    \
4195                   -Wl,--wrap,avresample_convert ||
4196     disable neon_clobber_test
4197
4198 enabled xmm_clobber_test &&
4199     check_ldflags -Wl,--wrap,avcodec_open2              \
4200                   -Wl,--wrap,avcodec_decode_audio4      \
4201                   -Wl,--wrap,avcodec_decode_video2      \
4202                   -Wl,--wrap,avcodec_decode_subtitle2   \
4203                   -Wl,--wrap,avcodec_encode_audio2      \
4204                   -Wl,--wrap,avcodec_encode_video2      \
4205                   -Wl,--wrap,avcodec_encode_subtitle    \
4206                   -Wl,--wrap,avresample_convert         \
4207                   -Wl,--wrap,sws_scale ||
4208     disable xmm_clobber_test
4209
4210 echo "X{};" > $TMPV
4211 if test_ldflags -Wl,--version-script,$TMPV; then
4212     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4213     check_cc <<EOF && enable symver_asm_label
4214 void ff_foo(void) __asm__ ("av_foo@VERSION");
4215 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4216 EOF
4217     check_cc <<EOF && enable symver_gnu_asm
4218 __asm__(".symver ff_foo,av_foo@VERSION");
4219 void ff_foo(void) {}
4220 EOF
4221 fi
4222
4223 if [ -z "$optflags" ]; then
4224     if enabled small; then
4225         optflags=$cflags_size
4226     elif enabled optimizations; then
4227         optflags=$cflags_speed
4228     else
4229         optflags=$cflags_noopt
4230     fi
4231 fi
4232
4233 check_optflags(){
4234     check_cflags "$@"
4235     enabled lto && check_ldflags "$@"
4236 }
4237
4238
4239 if enabled lto; then
4240     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4241     check_cflags  -flto
4242     check_ldflags -flto $cpuflags
4243 fi
4244
4245 check_optflags $optflags
4246 check_optflags -fno-math-errno
4247 check_optflags -fno-signed-zeros
4248
4249 if enabled icc; then
4250     # Just warnings, no remarks
4251     check_cflags -w1
4252     # -wd: Disable following warnings
4253     # 144, 167, 556: -Wno-pointer-sign
4254     # 1292: attribute "foo" ignored
4255     # 1419: external declaration in primary source file
4256     # 10006: ignoring unknown option -fno-signed-zeros
4257     # 10148: ignoring unknown option -Wno-parentheses
4258     # 10156: ignoring option '-W'; no argument required
4259     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4260     # 11030: Warning unknown option --as-needed
4261     # 10156: ignoring option '-export'; no argument required
4262     check_ldflags -wd10156,11030
4263     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4264     enable ebp_available
4265     if enabled x86_32; then
4266         icc_version=$($cc -dumpversion)
4267         test ${icc_version%%.*} -ge 11 &&
4268             check_cflags -falign-stack=maintain-16-byte ||
4269             disable aligned_stack
4270     fi
4271 elif enabled ccc; then
4272     # disable some annoying warnings
4273     add_cflags -msg_disable bitnotint
4274     add_cflags -msg_disable mixfuncvoid
4275     add_cflags -msg_disable nonstandcast
4276     add_cflags -msg_disable unsupieee
4277 elif enabled gcc; then
4278     check_optflags -fno-tree-vectorize
4279     check_cflags -Werror=implicit-function-declaration
4280     check_cflags -Werror=missing-prototypes
4281     check_cflags -Werror=return-type
4282     check_cflags -Werror=declaration-after-statement
4283     check_cflags -Werror=vla
4284     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4285 elif enabled llvm_gcc; then
4286     check_cflags -mllvm -stack-alignment=16
4287 elif enabled clang; then
4288     check_cflags -mllvm -stack-alignment=16
4289     check_cflags -Qunused-arguments
4290     check_cflags -Werror=implicit-function-declaration
4291     check_cflags -Werror=missing-prototypes
4292     check_cflags -Werror=return-type
4293 elif enabled cparser; then
4294     add_cflags -Wno-missing-variable-declarations
4295     add_cflags -Wno-empty-statement
4296 elif enabled armcc; then
4297     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4298     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4299     # 2523: use of inline assembler is deprecated
4300     add_cflags -W${armcc_opt},--diag_suppress=2523
4301     add_cflags -W${armcc_opt},--diag_suppress=1207
4302     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4303     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4304     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4305     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4306 elif enabled tms470; then
4307     add_cflags -pds=824 -pds=837
4308     disable inline_asm
4309 elif enabled pathscale; then
4310     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4311 elif enabled_any msvc icl; then
4312     enabled x86_32 && disable aligned_stack
4313     enabled_all x86_32 debug && add_cflags -Oy-
4314     enabled debug && add_ldflags -debug
4315     enable pragma_deprecated
4316     if enabled icl; then
4317         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4318         # (correctly) on icl 13.x.
4319         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4320             add_cflags -Qansi-alias
4321         # icl will pass the inline asm tests but inline asm is currently
4322         # not supported (build will fail)
4323         disable inline_asm
4324     fi
4325 fi
4326
4327 case $as_type in
4328     clang)
4329         add_asflags -Qunused-arguments
4330     ;;
4331 esac
4332
4333 case $ld_type in
4334     clang)
4335         check_ldflags -Qunused-arguments
4336     ;;
4337 esac
4338
4339 case $target_os in
4340     osf1)
4341         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4342     ;;
4343     plan9)
4344         add_cppflags -Dmain=plan9_main
4345     ;;
4346 esac
4347
4348 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4349
4350 check_deps $CONFIG_LIST       \
4351            $CONFIG_EXTRA      \
4352            $HAVE_LIST         \
4353            $ALL_COMPONENTS    \
4354
4355 ! enabled_any memalign posix_memalign aligned_malloc &&
4356     enabled_any $need_memalign && enable memalign_hack
4357
4358 for thread in $THREADS_LIST; do
4359     if enabled $thread; then
4360         test -n "$thread_type" &&
4361             die "ERROR: Only one thread type must be selected." ||
4362             thread_type="$thread"
4363     fi
4364 done
4365
4366 echo "install prefix            $prefix"
4367 echo "source path               $source_path"
4368 echo "C compiler                $cc"
4369 echo "C library                 $libc_type"
4370 if test "$host_cc" != "$cc"; then
4371     echo "host C compiler           $host_cc"
4372     echo "host C library            $host_libc_type"
4373 fi
4374 echo "ARCH                      $arch ($cpu)"
4375 if test "$build_suffix" != ""; then
4376     echo "build suffix              $build_suffix"
4377 fi
4378 if test "$extra_version" != ""; then
4379     echo "version string suffix     $extra_version"
4380 fi
4381 echo "big-endian                ${bigendian-no}"
4382 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4383 if enabled x86; then
4384     echo "${yasmexe}                      ${yasm-no}"
4385     echo "MMX enabled               ${mmx-no}"
4386     echo "MMXEXT enabled            ${mmxext-no}"
4387     echo "3DNow! enabled            ${amd3dnow-no}"
4388     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4389     echo "SSE enabled               ${sse-no}"
4390     echo "SSSE3 enabled             ${ssse3-no}"
4391     echo "AVX enabled               ${avx-no}"
4392     echo "XOP enabled               ${xop-no}"
4393     echo "FMA3 enabled              ${fma3-no}"
4394     echo "FMA4 enabled              ${fma4-no}"
4395     echo "i686 features enabled     ${i686-no}"
4396     echo "CMOV is fast              ${fast_cmov-no}"
4397     echo "EBX available             ${ebx_available-no}"
4398     echo "EBP available             ${ebp_available-no}"
4399 fi
4400 if enabled aarch64; then
4401     echo "NEON enabled              ${neon-no}"
4402     echo "VFP enabled               ${vfp-no}"
4403 fi
4404 if enabled arm; then
4405     echo "ARMv5TE enabled           ${armv5te-no}"
4406     echo "ARMv6 enabled             ${armv6-no}"
4407     echo "ARMv6T2 enabled           ${armv6t2-no}"
4408     echo "VFP enabled               ${vfp-no}"
4409     echo "NEON enabled              ${neon-no}"
4410 fi
4411 if enabled ppc; then
4412     echo "AltiVec enabled           ${altivec-no}"
4413     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4414     echo "dcbzl available           ${dcbzl-no}"
4415 fi
4416 echo "debug symbols             ${debug-no}"
4417 echo "optimize for size         ${small-no}"
4418 echo "optimizations             ${optimizations-no}"
4419 echo "static                    ${static-no}"
4420 echo "shared                    ${shared-no}"
4421 echo "new filter support        ${avfilter-no}"
4422 echo "network support           ${network-no}"
4423 echo "threading support         ${thread_type-no}"
4424 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4425 echo "SDL support               ${sdl-no}"
4426 test -n "$random_seed" &&
4427     echo "random seed               ${random_seed}"
4428 echo
4429
4430 echo "External libraries:"
4431 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4432 echo
4433
4434 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4435     echo "Enabled ${type}s:"
4436     eval list=\$$(toupper $type)_LIST
4437     print_enabled '_*' $list | print_3_columns
4438     echo
4439 done
4440
4441 license="LGPL version 2.1 or later"
4442 if enabled nonfree; then
4443     license="nonfree and unredistributable"
4444 elif enabled gplv3; then
4445     license="GPL version 3 or later"
4446 elif enabled lgplv3; then
4447     license="LGPL version 3 or later"
4448 elif enabled gpl; then
4449     license="GPL version 2 or later"
4450 fi
4451
4452 echo "License: $license"
4453
4454 echo "Creating config.mak and config.h..."
4455
4456 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4457
4458 config_files="$TMPH config.mak"
4459
4460 cat > config.mak <<EOF
4461 # Automatically generated by configure - do not modify!
4462 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4463 prefix=$prefix
4464 LIBDIR=\$(DESTDIR)$libdir
4465 SHLIBDIR=\$(DESTDIR)$shlibdir
4466 INCDIR=\$(DESTDIR)$incdir
4467 BINDIR=\$(DESTDIR)$bindir
4468 DATADIR=\$(DESTDIR)$datadir
4469 DOCDIR=\$(DESTDIR)$docdir
4470 MANDIR=\$(DESTDIR)$mandir
4471 SRC_PATH=$source_path
4472 CC_IDENT=$cc_ident
4473 ARCH=$arch
4474 CC=$cc
4475 AS=$as
4476 LD=$ld
4477 DEPCC=$dep_cc
4478 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4479 DEPAS=$as
4480 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4481 YASM=$yasmexe
4482 DEPYASM=$yasmexe
4483 AR=$ar
4484 ARFLAGS=$arflags
4485 AR_O=$ar_o
4486 RANLIB=$ranlib
4487 STRIP=$strip
4488 LN_S=$ln_s
4489 CPPFLAGS=$CPPFLAGS
4490 CFLAGS=$CFLAGS
4491 ASFLAGS=$ASFLAGS
4492 AS_C=$AS_C
4493 AS_O=$AS_O
4494 CC_C=$CC_C
4495 CC_E=$CC_E
4496 CC_O=$CC_O
4497 LD_O=$LD_O
4498 LD_LIB=$LD_LIB
4499 LD_PATH=$LD_PATH
4500 DLLTOOL=$dlltool
4501 LDFLAGS=$LDFLAGS
4502 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4503 STRIPFLAGS=$STRIPFLAGS
4504 YASMFLAGS=$YASMFLAGS
4505 BUILDSUF=$build_suffix
4506 FULLNAME=$FULLNAME
4507 LIBPREF=$LIBPREF
4508 LIBSUF=$LIBSUF
4509 LIBNAME=$LIBNAME
4510 SLIBPREF=$SLIBPREF
4511 SLIBSUF=$SLIBSUF
4512 EXESUF=$EXESUF
4513 EXTRA_VERSION=$extra_version
4514 CCDEP=$CCDEP
4515 CCDEP_FLAGS=$CCDEP_FLAGS
4516 ASDEP=$ASDEP
4517 ASDEP_FLAGS=$ASDEP_FLAGS
4518 CC_DEPFLAGS=$CC_DEPFLAGS
4519 AS_DEPFLAGS=$AS_DEPFLAGS
4520 HOSTCC=$host_cc
4521 HOSTLD=$host_ld
4522 HOSTCFLAGS=$host_cflags
4523 HOSTCPPFLAGS=$host_cppflags
4524 HOSTEXESUF=$HOSTEXESUF
4525 HOSTLDFLAGS=$host_ldflags
4526 HOSTLIBS=$host_libs
4527 DEPHOSTCC=$host_cc
4528 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4529 HOSTCCDEP=$HOSTCCDEP
4530 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4531 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4532 HOSTCC_C=$HOSTCC_C
4533 HOSTCC_O=$HOSTCC_O
4534 HOSTLD_O=$HOSTLD_O
4535 TARGET_EXEC=$target_exec $target_exec_args
4536 TARGET_PATH=$target_path
4537 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4538 CFLAGS-avplay=$sdl_cflags
4539 ZLIB=$($ldflags_filter -lz)
4540 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4541 EXTRALIBS=$extralibs
4542 COMPAT_OBJS=$compat_objs
4543 EXEOBJS=$exeobjs
4544 INSTALL=install
4545 LIBTARGET=${LIBTARGET}
4546 SLIBNAME=${SLIBNAME}
4547 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4548 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4549 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4550 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4551 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4552 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4553 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4554 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4555 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4556 EOF
4557
4558 get_version(){
4559     lcname=lib${1}
4560     name=$(toupper $lcname)
4561     file=$source_path/$lcname/version.h
4562     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4563     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4564     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4565     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4566     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4567 }
4568
4569 map 'get_version $v' $LIBRARY_LIST
4570
4571 print_program_libs(){
4572     eval "program_libs=\$${1}_libs"
4573     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4574 }
4575
4576 map 'print_program_libs $v' $PROGRAM_LIST
4577
4578 cat > $TMPH <<EOF
4579 /* Automatically generated by configure - do not modify! */
4580 #ifndef LIBAV_CONFIG_H
4581 #define LIBAV_CONFIG_H
4582 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4583 #define LIBAV_LICENSE "$(c_escape $license)"
4584 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4585 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4586 #define restrict $_restrict
4587 #define EXTERN_PREFIX "${extern_prefix}"
4588 #define EXTERN_ASM ${extern_prefix}
4589 #define SLIBSUF "$SLIBSUF"
4590 EOF
4591
4592 test -n "$malloc_prefix" &&
4593     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4594
4595 if enabled yasm; then
4596     append config_files $TMPASM
4597     printf '' >$TMPASM
4598 fi
4599
4600 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4601
4602 print_config ARCH_   "$config_files" $ARCH_LIST
4603 print_config HAVE_   "$config_files" $HAVE_LIST
4604 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4605                                      $CONFIG_EXTRA      \
4606                                      $ALL_COMPONENTS    \
4607
4608 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4609
4610 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4611 cp_if_changed $TMPH config.h
4612 touch .config
4613
4614 enabled yasm && cp_if_changed $TMPASM config.asm
4615
4616 cat > $TMPH <<EOF
4617 /* Generated by ffconf */
4618 #ifndef AVUTIL_AVCONFIG_H
4619 #define AVUTIL_AVCONFIG_H
4620 EOF
4621
4622 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4623
4624 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4625
4626 cp_if_changed $TMPH libavutil/avconfig.h
4627
4628 test -n "$WARNINGS" && printf "\n$WARNINGS"
4629
4630 # build pkg-config files
4631
4632 pkgconfig_generate(){
4633     name=$1
4634     shortname=${name#lib}${build_suffix}
4635     comment=$2
4636     version=$3
4637     libs=$4
4638     requires=$5
4639     enabled ${name#lib} || return 0
4640     mkdir -p $name
4641     cat <<EOF > $name/$name.pc
4642 prefix=$prefix
4643 exec_prefix=\${prefix}
4644 libdir=$libdir
4645 includedir=$incdir
4646
4647 Name: $name
4648 Description: $comment
4649 Version: $version
4650 Requires: $(enabled shared || echo $requires)
4651 Requires.private: $(enabled shared && echo $requires)
4652 Conflicts:
4653 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4654 Libs.private: $(enabled shared && echo $libs)
4655 Cflags: -I\${includedir}
4656 EOF
4657     cat <<EOF > $name/$name-uninstalled.pc
4658 prefix=
4659 exec_prefix=
4660 libdir=\${pcfiledir}
4661 includedir=${source_path}
4662
4663 Name: $name
4664 Description: $comment
4665 Version: $version
4666 Requires: $requires
4667 Conflicts:
4668 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4669 Cflags: -I\${includedir}
4670 EOF
4671 }
4672
4673 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4674 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4675 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4676 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4677
4678 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4679 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4680 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4681 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4682 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4683 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4684 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"