configure: Provide --pkg-config-flags
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105
106 Program options:
107   --disable-programs       do not build command line programs
108   --disable-avconv         disable avconv build
109   --disable-avplay         disable avplay build
110   --disable-avprobe        disable avprobe build
111   --disable-avserver       disable avserver build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-avdevice       disable libavdevice build
116   --disable-avcodec        disable libavcodec build
117   --disable-avformat       disable libavformat build
118   --disable-avutil         disable libavutil build
119   --disable-swscale        disable libswscale build
120   --disable-avfilter       disable video filter support [no]
121   --disable-avresample     disable libavresample build [no]
122   --disable-pthreads       disable pthreads [auto]
123   --disable-w32threads     disable Win32 threads [auto]
124   --disable-network        disable network support [no]
125   --disable-dct            disable DCT code
126   --disable-error-resilience disable error resilience code
127   --disable-lsp            disable LSP code
128   --disable-lzo            disable LZO decoder code
129   --disable-mdct           disable MDCT code
130   --disable-rdft           disable RDFT code
131   --disable-fft            disable FFT code
132
133 Hardware accelerators:
134   --enable-dxva2           enable DXVA2 code
135   --enable-vaapi           enable VAAPI code
136   --enable-vda             enable VDA code
137   --enable-vdpau           enable VDPAU code
138
139 Individual component options:
140   --disable-everything     disable all components listed below
141   --disable-encoder=NAME   disable encoder NAME
142   --enable-encoder=NAME    enable encoder NAME
143   --disable-encoders       disable all encoders
144   --disable-decoder=NAME   disable decoder NAME
145   --enable-decoder=NAME    enable decoder NAME
146   --disable-decoders       disable all decoders
147   --disable-hwaccel=NAME   disable hwaccel NAME
148   --enable-hwaccel=NAME    enable hwaccel NAME
149   --disable-hwaccels       disable all hwaccels
150   --disable-muxer=NAME     disable muxer NAME
151   --enable-muxer=NAME      enable muxer NAME
152   --disable-muxers         disable all muxers
153   --disable-demuxer=NAME   disable demuxer NAME
154   --enable-demuxer=NAME    enable demuxer NAME
155   --disable-demuxers       disable all demuxers
156   --enable-parser=NAME     enable parser NAME
157   --disable-parser=NAME    disable parser NAME
158   --disable-parsers        disable all parsers
159   --enable-bsf=NAME        enable bitstream filter NAME
160   --disable-bsf=NAME       disable bitstream filter NAME
161   --disable-bsfs           disable all bitstream filters
162   --enable-protocol=NAME   enable protocol NAME
163   --disable-protocol=NAME  disable protocol NAME
164   --disable-protocols      disable all protocols
165   --enable-indev=NAME      enable input device NAME
166   --disable-indev=NAME     disable input device NAME
167   --disable-indevs         disable input devices
168   --enable-outdev=NAME     enable output device NAME
169   --disable-outdev=NAME    disable output device NAME
170   --disable-outdevs        disable output devices
171   --disable-devices        disable all devices
172   --enable-filter=NAME     enable filter NAME
173   --disable-filter=NAME    disable filter NAME
174   --disable-filters        disable all filters
175
176 External library support:
177   --enable-avisynth        enable reading of AviSynth script files [no]
178   --enable-bzlib           enable bzlib [autodetect]
179   --enable-frei0r          enable frei0r video filtering
180   --enable-gnutls          enable gnutls [no]
181   --enable-libcdio         enable audio CD grabbing with libcdio
182   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
183                            and libraw1394 [no]
184   --enable-libfaac         enable AAC encoding via libfaac [no]
185   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
186   --enable-libfreetype     enable libfreetype [no]
187   --enable-libgsm          enable GSM de/encoding via libgsm [no]
188   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
189   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
190   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
191   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
192   --enable-libopencv       enable video filtering via libopencv [no]
193   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
194   --enable-libopus         enable Opus decoding via libopus [no]
195   --enable-libpulse        enable Pulseaudio input via libpulse [no]
196   --enable-librtmp         enable RTMP[E] support via librtmp [no]
197   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
198   --enable-libspeex        enable Speex de/encoding via libspeex [no]
199   --enable-libtheora       enable Theora encoding via libtheora [no]
200   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
201   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
202   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
203   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
204   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
205   --enable-libwebp         enable WebP encoding via libwebp [no]
206   --enable-libx264         enable H.264 encoding via x264 [no]
207   --enable-libx265         enable HEVC encoding via x265 [no]
208   --enable-libxavs         enable AVS encoding via xavs [no]
209   --enable-libxvid         enable Xvid encoding via xvidcore,
210                            native MPEG-4/Xvid encoder exists [no]
211   --enable-openssl         enable openssl [no]
212   --enable-x11grab         enable X11 grabbing [no]
213   --enable-zlib            enable zlib [autodetect]
214
215 Advanced options (experts only):
216   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
217   --enable-cross-compile   assume a cross-compiler is used
218   --sysroot=PATH           root of cross-build tree
219   --sysinclude=PATH        location of cross-build system headers
220   --target-os=OS           compiler targets OS [$target_os]
221   --target-exec=CMD        command to run executables on target
222   --target-path=DIR        path to view of build directory on target
223   --target-samples=DIR     path to samples directory on target
224   --toolchain=NAME         set tool defaults according to NAME
225   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
226   --nm=NM                  use nm tool
227   --ar=AR                  use archive tool AR [$ar_default]
228   --as=AS                  use assembler AS [$as_default]
229   --cc=CC                  use C compiler CC [$cc_default]
230   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
231   --ld=LD                  use linker LD
232   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
233   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
234   --host-cc=HOSTCC         use host C compiler HOSTCC
235   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
236   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
237   --host-ld=HOSTLD         use host linker HOSTLD
238   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
239   --host-libs=HLIBS        use libs HLIBS when linking for host
240   --host-os=OS             compiler host OS [$target_os]
241   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
242   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
243   --extra-libs=ELIBS       add ELIBS [$ELIBS]
244   --extra-version=STRING   version string suffix []
245   --optflags=OPTFLAGS      override optimization-related compiler flags
246   --build-suffix=SUFFIX    library name suffix []
247   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
248   --arch=ARCH              select architecture [$arch]
249   --cpu=CPU                select the minimum required CPU (affects
250                            instruction selection, may crash on older CPUs)
251   --enable-pic             build position-independent code
252   --enable-sram            allow use of on-chip SRAM
253   --enable-thumb           compile for Thumb instruction set
254   --disable-symver         disable symbol versioning
255   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
256   --disable-safe-bitstream-reader
257                            disable buffer boundary checking in bitreaders
258                            (faster, but may crash)
259   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
260   --enable-lto             use link-time optimization
261
262 Optimization options (experts only):
263   --disable-asm            disable all assembler optimizations
264   --disable-altivec        disable AltiVec optimizations
265   --disable-amd3dnow       disable 3DNow! optimizations
266   --disable-amd3dnowext    disable 3DNow! extended optimizations
267   --disable-mmx            disable MMX optimizations
268   --disable-mmxext         disable MMXEXT optimizations
269   --disable-sse            disable SSE optimizations
270   --disable-sse2           disable SSE2 optimizations
271   --disable-sse3           disable SSE3 optimizations
272   --disable-ssse3          disable SSSE3 optimizations
273   --disable-sse4           disable SSE4 optimizations
274   --disable-sse42          disable SSE4.2 optimizations
275   --disable-avx            disable AVX optimizations
276   --disable-xop            disable XOP optimizations
277   --disable-fma3           disable FMA3 optimizations
278   --disable-fma4           disable FMA4 optimizations
279   --disable-avx2           disable AVX2 optimizations
280   --disable-armv5te        disable armv5te optimizations
281   --disable-armv6          disable armv6 optimizations
282   --disable-armv6t2        disable armv6t2 optimizations
283   --disable-vfp            disable VFP optimizations
284   --disable-neon           disable NEON optimizations
285   --disable-vis            disable VIS optimizations
286   --disable-inline-asm     disable use of inline assembler
287   --disable-yasm           disable use of yasm assembler
288
289 Developer options (useful when working on Libav itself):
290   --disable-debug          disable debugging symbols
291   --enable-debug=LEVEL     set the debug level [$debuglevel]
292   --disable-optimizations  disable compiler optimizations
293   --enable-extra-warnings  enable more compiler warnings
294   --samples=PATH           location of test samples for FATE, if not set use
295                            \$LIBAV_SAMPLES at make invocation time.
296   --enable-neon-clobber-test check NEON registers for clobbering (should be
297                            used only for debugging purposes)
298   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
299                            should be used only for debugging purposes)
300   --enable-random          randomly enable/disable components
301   --disable-random
302   --enable-random=LIST     randomly enable/disable specific components or
303   --disable-random=LIST    component groups. LIST is a comma-separated list
304                            of NAME[:PROB] entries where NAME is a component
305                            (group) and PROB the probability associated with
306                            NAME (default 0.5).
307   --random-seed=VALUE      seed value for --enable/disable-random
308
309 NOTE: Object files are built at the place where configure is launched.
310 EOF
311   exit 0
312 }
313
314 quotes='""'
315
316 log(){
317     echo "$@" >> $logfile
318 }
319
320 log_file(){
321     log BEGIN $1
322     pr -n -t $1 >> $logfile
323     log END $1
324 }
325
326 echolog(){
327     log "$@"
328     echo "$@"
329 }
330
331 warn(){
332     log "WARNING: $*"
333     WARNINGS="${WARNINGS}WARNING: $*\n"
334 }
335
336 die(){
337     echolog "$@"
338     cat <<EOF
339
340 If you think configure made a mistake, make sure you are using the latest
341 version from Git.  If the latest version fails, report the problem to the
342 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
343 EOF
344     if disabled logging; then
345         cat <<EOF
346 Rerun configure with logging enabled (do not use --disable-logging), and
347 include the log this produces with your report.
348 EOF
349     else
350         cat <<EOF
351 Include the log file "$logfile" produced by configure as this will help
352 solving the problem.
353 EOF
354     fi
355     exit 1
356 }
357
358 # Avoid locale weirdness, besides we really just want to translate ASCII.
359 toupper(){
360     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
361 }
362
363 tolower(){
364     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
365 }
366
367 c_escape(){
368     echo "$*" | sed 's/["\\]/\\\0/g'
369 }
370
371 sh_quote(){
372     v=$(echo "$1" | sed "s/'/'\\\\''/g")
373     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
374     echo "$v"
375 }
376
377 cleanws(){
378     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
379 }
380
381 filter(){
382     pat=$1
383     shift
384     for v; do
385         eval "case $v in $pat) echo $v ;; esac"
386     done
387 }
388
389 filter_out(){
390     pat=$1
391     shift
392     for v; do
393         eval "case $v in $pat) ;; *) echo $v ;; esac"
394     done
395 }
396
397 map(){
398     m=$1
399     shift
400     for v; do eval $m; done
401 }
402
403 add_suffix(){
404     suffix=$1
405     shift
406     for v; do echo ${v}${suffix}; done
407 }
408
409 set_all(){
410     value=$1
411     shift
412     for var in $*; do
413         eval $var=$value
414     done
415 }
416
417 set_weak(){
418     value=$1
419     shift
420     for var; do
421         eval : \${$var:=$value}
422     done
423 }
424
425 sanitize_var_name(){
426     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
427 }
428
429 set_safe(){
430     var=$1
431     shift
432     eval $(sanitize_var_name "$var")='$*'
433 }
434
435 get_safe(){
436     eval echo \$$(sanitize_var_name "$1")
437 }
438
439 pushvar(){
440     for pvar in $*; do
441         eval level=\${${pvar}_level:=0}
442         eval ${pvar}_${level}="\$$pvar"
443         eval ${pvar}_level=$(($level+1))
444     done
445 }
446
447 popvar(){
448     for pvar in $*; do
449         eval level=\${${pvar}_level:-0}
450         test $level = 0 && continue
451         eval level=$(($level-1))
452         eval $pvar="\${${pvar}_${level}}"
453         eval ${pvar}_level=$level
454         eval unset ${pvar}_${level}
455     done
456 }
457
458 enable(){
459     set_all yes $*
460 }
461
462 disable(){
463     set_all no $*
464 }
465
466 enable_weak(){
467     set_weak yes $*
468 }
469
470 disable_weak(){
471     set_weak no $*
472 }
473
474 enable_safe(){
475     for var; do
476         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
477     done
478 }
479
480 disable_safe(){
481     for var; do
482         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
483     done
484 }
485
486 do_enable_deep(){
487     for var; do
488         enabled $var && continue
489         eval sel="\$${var}_select"
490         eval sgs="\$${var}_suggest"
491         pushvar var sgs
492         enable_deep $sel
493         popvar sgs
494         enable_deep_weak $sgs
495         popvar var
496     done
497 }
498
499 enable_deep(){
500     do_enable_deep $*
501     enable $*
502 }
503
504 enable_deep_weak(){
505     for var; do
506         disabled $var && continue
507         pushvar var
508         do_enable_deep $var
509         popvar var
510         enable_weak $var
511     done
512 }
513
514 enabled(){
515     test "${1#!}" = "$1" && op== || op=!=
516     eval test "x\$${1#!}" $op "xyes"
517 }
518
519 disabled(){
520     test "${1#!}" = "$1" && op== || op=!=
521     eval test "x\$${1#!}" $op "xno"
522 }
523
524 enabled_all(){
525     for opt; do
526         enabled $opt || return 1
527     done
528 }
529
530 disabled_all(){
531     for opt; do
532         disabled $opt || return 1
533     done
534 }
535
536 enabled_any(){
537     for opt; do
538         enabled $opt && return 0
539     done
540 }
541
542 disabled_any(){
543     for opt; do
544         disabled $opt && return 0
545     done
546     return 1
547 }
548
549 set_default(){
550     for opt; do
551         eval : \${$opt:=\$${opt}_default}
552     done
553 }
554
555 is_in(){
556     value=$1
557     shift
558     for var in $*; do
559         [ $var = $value ] && return 0
560     done
561     return 1
562 }
563
564 do_check_deps(){
565     for cfg; do
566         cfg="${cfg#!}"
567         enabled ${cfg}_checking && die "Circular dependency for $cfg."
568         disabled ${cfg}_checking && continue
569         enable ${cfg}_checking
570         append allopts $cfg
571
572         eval dep_all="\$${cfg}_deps"
573         eval dep_any="\$${cfg}_deps_any"
574         eval dep_sel="\$${cfg}_select"
575         eval dep_sgs="\$${cfg}_suggest"
576         eval dep_ifa="\$${cfg}_if"
577         eval dep_ifn="\$${cfg}_if_any"
578
579         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
580         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
581         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
582
583         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
584         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
585         enabled_all  $dep_all || disable $cfg
586         enabled_any  $dep_any || disable $cfg
587         disabled_any $dep_sel && disable $cfg
588
589         if enabled $cfg; then
590             enable_deep $dep_sel
591             enable_deep_weak $dep_sgs
592         fi
593
594         disable ${cfg}_checking
595     done
596 }
597
598 check_deps(){
599     unset allopts
600
601     do_check_deps "$@"
602
603     for cfg in $allopts; do
604         enabled $cfg || continue
605         eval dep_extralibs="\$${cfg}_extralibs"
606         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
607     done
608 }
609
610 print_config(){
611     pfx=$1
612     files=$2
613     shift 2
614     map 'eval echo "$v \${$v:-no}"' "$@" |
615     awk "BEGIN { split(\"$files\", files) }
616         {
617             c = \"$pfx\" toupper(\$1);
618             v = \$2;
619             sub(/yes/, 1, v);
620             sub(/no/,  0, v);
621             for (f in files) {
622                 file = files[f];
623                 if (file ~ /\\.h\$/) {
624                     printf(\"#define %s %d\\n\", c, v) >>file;
625                 } else if (file ~ /\\.asm\$/) {
626                     printf(\"%%define %s %d\\n\", c, v) >>file;
627                 } else if (file ~ /\\.mak\$/) {
628                     n = -v ? \"\" : \"!\";
629                     printf(\"%s%s=yes\\n\", n, c) >>file;
630                 }
631             }
632         }"
633 }
634
635 print_enabled(){
636     suf=$1
637     shift
638     for v; do
639         enabled $v && printf "%s\n" ${v%$suf};
640     done
641 }
642
643 append(){
644     var=$1
645     shift
646     eval "$var=\"\$$var $*\""
647 }
648
649 prepend(){
650     var=$1
651     shift
652     eval "$var=\"$* \$$var\""
653 }
654
655 add_cppflags(){
656     append CPPFLAGS "$@"
657 }
658
659 add_cflags(){
660     append CFLAGS $($cflags_filter "$@")
661 }
662
663 add_asflags(){
664     append ASFLAGS $($asflags_filter "$@")
665 }
666
667 add_ldflags(){
668     append LDFLAGS $($ldflags_filter "$@")
669 }
670
671 add_stripflags(){
672     append STRIPFLAGS "$@"
673 }
674
675 add_extralibs(){
676     prepend extralibs $($ldflags_filter "$@")
677 }
678
679 add_host_cppflags(){
680     append host_cppflags "$@"
681 }
682
683 add_host_cflags(){
684     append host_cflags $($host_cflags_filter "$@")
685 }
686
687 add_host_ldflags(){
688     append host_ldflags $($host_ldflags_filter "$@")
689 }
690
691 add_compat(){
692     append compat_objs $1
693     shift
694     map 'add_cppflags -D$v' "$@"
695 }
696
697 check_cmd(){
698     log "$@"
699     "$@" >> $logfile 2>&1
700 }
701
702 cc_o(){
703     eval printf '%s\\n' $CC_O
704 }
705
706 cc_e(){
707     eval printf '%s\\n' $CC_E
708 }
709
710 check_cc(){
711     log check_cc "$@"
712     cat > $TMPC
713     log_file $TMPC
714     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
715 }
716
717 check_cpp(){
718     log check_cpp "$@"
719     cat > $TMPC
720     log_file $TMPC
721     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
722 }
723
724 as_o(){
725     eval printf '%s\\n' $AS_O
726 }
727
728 check_as(){
729     log check_as "$@"
730     cat > $TMPS
731     log_file $TMPS
732     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
733 }
734
735 check_inline_asm(){
736     log check_inline_asm "$@"
737     name="$1"
738     code="$2"
739     shift 2
740     disable $name
741     check_cc "$@" <<EOF && enable $name
742 void foo(void){ __asm__ volatile($code); }
743 EOF
744 }
745
746 check_insn(){
747     log check_insn "$@"
748     check_inline_asm ${1}_inline "\"$2\""
749     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
750 }
751
752 check_yasm(){
753     log check_yasm "$@"
754     echo "$1" > $TMPS
755     log_file $TMPS
756     shift 1
757     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
758 }
759
760 ld_o(){
761     eval printf '%s\\n' $LD_O
762 }
763
764 check_ld(){
765     log check_ld "$@"
766     flags=$(filter_out '-l*' "$@")
767     libs=$(filter '-l*' "$@")
768     check_cc $($cflags_filter $flags) || return
769     flags=$($ldflags_filter $flags)
770     libs=$($ldflags_filter $libs)
771     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
772 }
773
774 print_include(){
775     hdr=$1
776     test "${hdr%.h}" = "${hdr}" &&
777         echo "#include $hdr"    ||
778         echo "#include <$hdr>"
779 }
780
781 check_code(){
782     log check_code "$@"
783     check=$1
784     headers=$2
785     code=$3
786     shift 3
787     {
788         for hdr in $headers; do
789             print_include $hdr
790         done
791         echo "int main(void) { $code; return 0; }"
792     } | check_$check "$@"
793 }
794
795 check_cppflags(){
796     log check_cppflags "$@"
797     check_cc "$@" <<EOF && append CPPFLAGS "$@"
798 int x;
799 EOF
800 }
801
802 test_cflags(){
803     log test_cflags "$@"
804     set -- $($cflags_filter "$@")
805     check_cc "$@" <<EOF
806 int x;
807 EOF
808 }
809
810 check_cflags(){
811     log check_cflags "$@"
812     test_cflags "$@" && add_cflags "$@"
813 }
814
815 test_ldflags(){
816     log test_ldflags "$@"
817     check_ld "$@" <<EOF
818 int main(void){ return 0; }
819 EOF
820 }
821
822 check_ldflags(){
823     log check_ldflags "$@"
824     test_ldflags "$@" && add_ldflags "$@"
825 }
826
827 test_stripflags(){
828     log test_stripflags "$@"
829     # call check_cc to get a fresh TMPO
830     check_cc <<EOF
831 int main(void) { return 0; }
832 EOF
833     check_cmd $strip $STRIPFLAGS "$@" $TMPO
834 }
835
836 check_stripflags(){
837     log check_stripflags "$@"
838     test_stripflags "$@" && add_stripflags "$@"
839 }
840
841 check_header(){
842     log check_header "$@"
843     header=$1
844     shift
845     disable_safe $header
846     check_cpp "$@" <<EOF && enable_safe $header
847 #include <$header>
848 int x;
849 EOF
850 }
851
852 check_func(){
853     log check_func "$@"
854     func=$1
855     shift
856     disable $func
857     check_ld "$@" <<EOF && enable $func
858 extern int $func();
859 int main(void){ $func(); }
860 EOF
861 }
862
863 check_mathfunc(){
864     log check_mathfunc "$@"
865     func=$1
866     narg=$2
867     shift 2
868     test $narg = 2 && args="f, g" || args="f"
869     disable $func
870     check_ld "$@" <<EOF && enable $func
871 #include <math.h>
872 float foo(float f, float g) { return $func($args); }
873 int main(void){ return 0; }
874 EOF
875 }
876
877 check_func_headers(){
878     log check_func_headers "$@"
879     headers=$1
880     funcs=$2
881     shift 2
882     {
883         for hdr in $headers; do
884             print_include $hdr
885         done
886         for func in $funcs; do
887             echo "long check_$func(void) { return (long) $func; }"
888         done
889         echo "int main(void) { return 0; }"
890     } | check_ld "$@" && enable $funcs && enable_safe $headers
891 }
892
893 check_cpp_condition(){
894     log check_cpp_condition "$@"
895     header=$1
896     condition=$2
897     shift 2
898     check_cpp "$@" <<EOF
899 #include <$header>
900 #if !($condition)
901 #error "unsatisfied condition: $condition"
902 #endif
903 EOF
904 }
905
906 check_lib(){
907     log check_lib "$@"
908     header="$1"
909     func="$2"
910     shift 2
911     check_header $header && check_func $func "$@" && add_extralibs "$@"
912 }
913
914 check_lib2(){
915     log check_lib2 "$@"
916     headers="$1"
917     funcs="$2"
918     shift 2
919     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
920 }
921
922 check_pkg_config(){
923     log check_pkg_config "$@"
924     pkg="$1"
925     headers="$2"
926     funcs="$3"
927     shift 3
928     check_cmd $pkg_config --exists --print-errors $pkg || return
929     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
930     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
931     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
932         set_safe ${pkg}_cflags $pkg_cflags   &&
933         set_safe ${pkg}_libs   $pkg_libs
934 }
935
936 check_exec(){
937     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
938 }
939
940 check_exec_crash(){
941     code=$(cat)
942
943     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
944     # are safe but may not be available everywhere.  Thus we use
945     # raise(SIGTERM) instead.  The check is run in a subshell so we
946     # can redirect the "Terminated" message from the shell.  SIGBUS
947     # is not defined by standard C so it is used conditionally.
948
949     (check_exec "$@") >> $logfile 2>&1 <<EOF
950 #include <signal.h>
951 static void sighandler(int sig){
952     raise(SIGTERM);
953 }
954 int foo(void){
955     $code
956 }
957 int (*func_ptr)(void) = foo;
958 int main(void){
959     signal(SIGILL, sighandler);
960     signal(SIGFPE, sighandler);
961     signal(SIGSEGV, sighandler);
962 #ifdef SIGBUS
963     signal(SIGBUS, sighandler);
964 #endif
965     return func_ptr();
966 }
967 EOF
968 }
969
970 check_type(){
971     log check_type "$@"
972     headers=$1
973     type=$2
974     shift 2
975     disable_safe "$type"
976     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
977 }
978
979 check_struct(){
980     log check_struct "$@"
981     headers=$1
982     struct=$2
983     member=$3
984     shift 3
985     disable_safe "${struct}_${member}"
986     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
987         enable_safe "${struct}_${member}"
988 }
989
990 check_builtin(){
991     log check_builtin "$@"
992     name=$1
993     headers=$2
994     builtin=$3
995     shift 3
996     disable "$name"
997     check_code ld "$headers" "$builtin" "$@" && enable "$name"
998 }
999
1000 check_compile_assert(){
1001     log check_compile_assert "$@"
1002     name=$1
1003     headers=$2
1004     condition=$3
1005     shift 3
1006     disable "$name"
1007     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1008 }
1009
1010 require(){
1011     name="$1"
1012     header="$2"
1013     func="$3"
1014     shift 3
1015     check_lib $header $func "$@" || die "ERROR: $name not found"
1016 }
1017
1018 require2(){
1019     name="$1"
1020     headers="$2"
1021     func="$3"
1022     shift 3
1023     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1024 }
1025
1026 require_pkg_config(){
1027     pkg="$1"
1028     check_pkg_config "$@" || die "ERROR: $pkg not found"
1029     add_cflags    $(get_safe ${pkg}_cflags)
1030     add_extralibs $(get_safe ${pkg}_libs)
1031 }
1032
1033 hostcc_e(){
1034     eval printf '%s\\n' $HOSTCC_E
1035 }
1036
1037 hostcc_o(){
1038     eval printf '%s\\n' $HOSTCC_O
1039 }
1040
1041 check_host_cc(){
1042     log check_host_cc "$@"
1043     cat > $TMPC
1044     log_file $TMPC
1045     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1046 }
1047
1048 check_host_cpp(){
1049     log check_host_cpp "$@"
1050     cat > $TMPC
1051     log_file $TMPC
1052     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1053 }
1054
1055 check_host_cppflags(){
1056     log check_host_cppflags "$@"
1057     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1058 int x;
1059 EOF
1060 }
1061
1062 check_host_cflags(){
1063     log check_host_cflags "$@"
1064     set -- $($host_cflags_filter "$@")
1065     check_host_cc "$@" <<EOF && append host_cflags "$@"
1066 int x;
1067 EOF
1068 }
1069
1070 check_host_cpp_condition(){
1071     log check_host_cpp_condition "$@"
1072     header=$1
1073     condition=$2
1074     shift 2
1075     check_host_cpp "$@" <<EOF
1076 #include <$header>
1077 #if !($condition)
1078 #error "unsatisfied condition: $condition"
1079 #endif
1080 EOF
1081 }
1082
1083 apply(){
1084     file=$1
1085     shift
1086     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1087 }
1088
1089 cp_if_changed(){
1090     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1091     mkdir -p "$(dirname $2)"
1092     $cp_f "$1" "$2"
1093 }
1094
1095 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1096 # system-dependent things.
1097
1098 COMPONENT_LIST="
1099     bsfs
1100     decoders
1101     demuxers
1102     encoders
1103     filters
1104     hwaccels
1105     indevs
1106     muxers
1107     outdevs
1108     parsers
1109     protocols
1110 "
1111
1112 EXAMPLE_LIST="
1113     avcodec_example
1114     filter_audio_example
1115     metadata_example
1116     output_example
1117     transcode_aac_example
1118 "
1119
1120 EXTERNAL_LIBRARY_LIST="
1121     avisynth
1122     bzlib
1123     frei0r
1124     gnutls
1125     libcdio
1126     libdc1394
1127     libfaac
1128     libfdk_aac
1129     libfreetype
1130     libgsm
1131     libilbc
1132     libmp3lame
1133     libopencore_amrnb
1134     libopencore_amrwb
1135     libopencv
1136     libopenjpeg
1137     libopus
1138     libpulse
1139     librtmp
1140     libschroedinger
1141     libspeex
1142     libtheora
1143     libvo_aacenc
1144     libvo_amrwbenc
1145     libvorbis
1146     libvpx
1147     libwavpack
1148     libwebp
1149     libx264
1150     libx265
1151     libxavs
1152     libxvid
1153     openssl
1154     x11grab
1155     zlib
1156 "
1157
1158 HWACCEL_LIST="
1159     dxva2
1160     vaapi
1161     vda
1162     vdpau
1163 "
1164
1165 LIBRARY_LIST="
1166     avcodec
1167     avdevice
1168     avfilter
1169     avformat
1170     avresample
1171     avutil
1172     swscale
1173 "
1174
1175 PROGRAM_LIST="
1176     avconv
1177     avplay
1178     avprobe
1179     avserver
1180 "
1181
1182 CONFIG_LIST="
1183     $COMPONENT_LIST
1184     $EXAMPLE_LIST
1185     $EXTERNAL_LIBRARY_LIST
1186     $HWACCEL_LIST
1187     $LIBRARY_LIST
1188     $PROGRAM_LIST
1189     dct
1190     doc
1191     error_resilience
1192     fft
1193     gpl
1194     gray
1195     hardcoded_tables
1196     lsp
1197     lzo
1198     mdct
1199     memalign_hack
1200     neon_clobber_test
1201     network
1202     nonfree
1203     pic
1204     pod2man
1205     rdft
1206     runtime_cpudetect
1207     safe_bitstream_reader
1208     shared
1209     small
1210     sram
1211     static
1212     swscale_alpha
1213     texi2html
1214     thumb
1215     version3
1216     xmm_clobber_test
1217 "
1218
1219 THREADS_LIST="
1220     pthreads
1221     w32threads
1222 "
1223
1224 ATOMICS_LIST="
1225     atomics_gcc
1226     atomics_suncc
1227     atomics_win32
1228 "
1229
1230 ARCH_LIST="
1231     aarch64
1232     alpha
1233     arm
1234     avr32
1235     avr32_ap
1236     avr32_uc
1237     bfin
1238     ia64
1239     m68k
1240     mips
1241     mips64
1242     parisc
1243     ppc
1244     ppc64
1245     s390
1246     sh4
1247     sparc
1248     sparc64
1249     tilegx
1250     tilepro
1251     tomi
1252     x86
1253     x86_32
1254     x86_64
1255 "
1256
1257 ARCH_EXT_LIST_ARM="
1258     armv5te
1259     armv6
1260     armv6t2
1261     neon
1262     vfp
1263     vfpv3
1264 "
1265
1266 ARCH_EXT_LIST_X86_SIMD="
1267     amd3dnow
1268     amd3dnowext
1269     avx
1270     avx2
1271     fma3
1272     fma4
1273     mmx
1274     mmxext
1275     sse
1276     sse2
1277     sse3
1278     sse4
1279     sse42
1280     ssse3
1281     xop
1282 "
1283
1284 ARCH_EXT_LIST_X86="
1285     $ARCH_EXT_LIST_X86_SIMD
1286     cpunop
1287     i686
1288 "
1289
1290 ARCH_EXT_LIST="
1291     $ARCH_EXT_LIST_ARM
1292     $ARCH_EXT_LIST_X86
1293     altivec
1294     ppc4xx
1295     vis
1296 "
1297
1298 HAVE_LIST_CMDLINE="
1299     inline_asm
1300     symver
1301     yasm
1302 "
1303
1304 HAVE_LIST_PUB="
1305     bigendian
1306     fast_unaligned
1307 "
1308
1309 MATH_FUNCS="
1310     atanf
1311     atan2f
1312     cbrtf
1313     cosf
1314     exp2
1315     exp2f
1316     expf
1317     isinf
1318     isnan
1319     ldexpf
1320     llrint
1321     llrintf
1322     log2
1323     log2f
1324     log10f
1325     lrint
1326     lrintf
1327     powf
1328     rint
1329     round
1330     roundf
1331     sinf
1332     trunc
1333     truncf
1334 "
1335
1336 HAVE_LIST="
1337     $ARCH_EXT_LIST
1338     $(add_suffix _external $ARCH_EXT_LIST)
1339     $(add_suffix _inline   $ARCH_EXT_LIST)
1340     $ATOMICS_LIST
1341     $HAVE_LIST_CMDLINE
1342     $HAVE_LIST_PUB
1343     $MATH_FUNCS
1344     $THREADS_LIST
1345     aligned_malloc
1346     aligned_stack
1347     alsa_asoundlib_h
1348     altivec_h
1349     arpa_inet_h
1350     asm_mod_q
1351     atomic_cas_ptr
1352     atomics_native
1353     attribute_may_alias
1354     attribute_packed
1355     cdio_paranoia_h
1356     cdio_paranoia_paranoia_h
1357     closesocket
1358     CommandLineToArgvW
1359     CryptGenRandom
1360     dcbzl
1361     dev_bktr_ioctl_bt848_h
1362     dev_bktr_ioctl_meteor_h
1363     dev_ic_bt8xx_h
1364     dev_video_bktr_ioctl_bt848_h
1365     dev_video_meteor_ioctl_meteor_h
1366     direct_h
1367     dlfcn_h
1368     dlopen
1369     dos_paths
1370     dxva_h
1371     ebp_available
1372     ebx_available
1373     fast_64bit
1374     fast_clz
1375     fast_cmov
1376     fcntl
1377     flt_lim
1378     fork
1379     getaddrinfo
1380     gethrtime
1381     getopt
1382     GetProcessAffinityMask
1383     GetProcessMemoryInfo
1384     GetProcessTimes
1385     getrusage
1386     getservbyport
1387     GetSystemTimeAsFileTime
1388     gettimeofday
1389     gnu_as
1390     gsm_h
1391     ibm_asm
1392     inet_aton
1393     inline_asm_labels
1394     io_h
1395     isatty
1396     jack_port_get_latency_range
1397     ldbrx
1398     libc_msvcrt
1399     libdc1394_1
1400     libdc1394_2
1401     local_aligned_16
1402     local_aligned_8
1403     localtime_r
1404     loongson
1405     mach_absolute_time
1406     mach_mach_time_h
1407     machine_ioctl_bt848_h
1408     machine_ioctl_meteor_h
1409     machine_rw_barrier
1410     malloc_h
1411     MapViewOfFile
1412     memalign
1413     MemoryBarrier
1414     mkstemp
1415     mm_empty
1416     mmap
1417     mprotect
1418     nanosleep
1419     poll_h
1420     posix_memalign
1421     pragma_deprecated
1422     rdtsc
1423     sched_getaffinity
1424     sdl
1425     SetConsoleTextAttribute
1426     setmode
1427     setrlimit
1428     Sleep
1429     sndio_h
1430     socklen_t
1431     soundcard_h
1432     strerror_r
1433     strptime
1434     struct_addrinfo
1435     struct_group_source_req
1436     struct_ip_mreq_source
1437     struct_ipv6_mreq
1438     struct_pollfd
1439     struct_rusage_ru_maxrss
1440     struct_sockaddr_in6
1441     struct_sockaddr_sa_len
1442     struct_sockaddr_storage
1443     struct_v4l2_frmivalenum_discrete
1444     symver_asm_label
1445     symver_gnu_asm
1446     sync_val_compare_and_swap
1447     sys_mman_h
1448     sys_param_h
1449     sys_resource_h
1450     sys_select_h
1451     sys_soundcard_h
1452     sys_time_h
1453     sys_un_h
1454     sys_videoio_h
1455     sysconf
1456     sysctl
1457     threads
1458     unistd_h
1459     usleep
1460     vdpau_x11
1461     vfp_args
1462     VirtualAlloc
1463     windows_h
1464     winsock2_h
1465     xform_asm
1466     xlib
1467     xmm_clobbers
1468 "
1469
1470 # options emitted with CONFIG_ prefix but not available on the command line
1471 CONFIG_EXTRA="
1472     aandcttables
1473     ac3dsp
1474     audio_frame_queue
1475     dsputil
1476     gcrypt
1477     golomb
1478     gplv3
1479     h263dsp
1480     h264chroma
1481     h264dsp
1482     h264pred
1483     h264qpel
1484     hpeldsp
1485     huffman
1486     intrax8
1487     lgplv3
1488     lpc
1489     mpegaudio
1490     mpegaudiodsp
1491     mpegvideo
1492     mpegvideoenc
1493     nettle
1494     rangecoder
1495     riffdec
1496     riffenc
1497     rtpdec
1498     rtpenc_chain
1499     sinewin
1500     videodsp
1501     vp3dsp
1502 "
1503
1504 CMDLINE_SELECT="
1505     $ARCH_EXT_LIST
1506     $CONFIG_LIST
1507     $HAVE_LIST_CMDLINE
1508     $THREADS_LIST
1509     asm
1510     cross_compile
1511     debug
1512     extra_warnings
1513     logging
1514     lto
1515     optimizations
1516 "
1517
1518 PATHS_LIST="
1519     bindir
1520     datadir
1521     docdir
1522     incdir
1523     libdir
1524     mandir
1525     prefix
1526     shlibdir
1527 "
1528
1529 CMDLINE_SET="
1530     $PATHS_LIST
1531     ar
1532     arch
1533     as
1534     build_suffix
1535     cc
1536     cpu
1537     cross_prefix
1538     dep_cc
1539     extra_version
1540     host_cc
1541     host_cflags
1542     host_ld
1543     host_ldflags
1544     host_libs
1545     host_os
1546     ld
1547     logfile
1548     malloc_prefix
1549     nm
1550     optflags
1551     pkg_config
1552     pkg_config_flags
1553     random_seed
1554     samples
1555     sysinclude
1556     sysroot
1557     target_exec
1558     target_os
1559     target_path
1560     target_samples
1561     toolchain
1562 "
1563
1564 CMDLINE_APPEND="
1565     extra_cflags
1566     host_cppflags
1567 "
1568
1569 # code dependency declarations
1570
1571 # architecture extensions
1572
1573 armv5te_deps="arm"
1574 armv6_deps="arm"
1575 armv6t2_deps="arm"
1576 neon_deps_any="aarch64 arm"
1577 vfp_deps_any="aarch64 arm"
1578 vfpv3_deps="vfp"
1579
1580 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1581
1582 altivec_deps="ppc"
1583 ppc4xx_deps="ppc"
1584
1585 vis_deps="sparc"
1586
1587 cpunop_deps="i686"
1588 x86_64_select="i686"
1589 x86_64_suggest="fast_cmov"
1590
1591 amd3dnow_deps="mmx"
1592 amd3dnowext_deps="amd3dnow"
1593 i686_deps="x86"
1594 mmx_deps="x86"
1595 mmxext_deps="mmx"
1596 sse_deps="mmxext"
1597 sse2_deps="sse"
1598 sse3_deps="sse2"
1599 ssse3_deps="sse3"
1600 sse4_deps="ssse3"
1601 sse42_deps="sse4"
1602 avx_deps="sse42"
1603 xop_deps="avx"
1604 fma3_deps="avx"
1605 fma4_deps="avx"
1606 avx2_deps="avx"
1607
1608 mmx_external_deps="yasm"
1609 mmx_inline_deps="inline_asm"
1610 mmx_suggest="mmx_external mmx_inline"
1611
1612 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1613     eval dep=\$${ext}_deps
1614     eval ${ext}_external_deps='"${dep}_external"'
1615     eval ${ext}_inline_deps='"${dep}_inline"'
1616     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1617 done
1618
1619 aligned_stack_if_any="aarch64 ppc x86"
1620 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1621 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1622 fast_unaligned_if_any="aarch64 ppc x86"
1623
1624 need_memalign="altivec neon sse"
1625
1626 # system capabilities
1627 log2_deps="!libc_msvcrt"
1628
1629 symver_if_any="symver_asm_label symver_gnu_asm"
1630
1631 # threading support
1632 atomics_gcc_if="sync_val_compare_and_swap"
1633 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1634 atomics_win32_if="MemoryBarrier"
1635 atomics_native_if_any="$ATOMICS_LIST"
1636 w32threads_deps="atomics_native"
1637 threads_if_any="$THREADS_LIST"
1638
1639 # subsystems
1640 dct_select="rdft"
1641 error_resilience_select="dsputil"
1642 lpc_select="dsputil"
1643 mdct_select="fft"
1644 rdft_select="fft"
1645 mpegaudio_select="mpegaudiodsp"
1646 mpegaudiodsp_select="dct"
1647 mpegvideo_select="dsputil hpeldsp videodsp"
1648 mpegvideoenc_select="mpegvideo"
1649
1650 # decoders / encoders
1651 aac_decoder_select="mdct sinewin"
1652 aac_encoder_select="audio_frame_queue mdct sinewin"
1653 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1654 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1655 ac3_encoder_select="mdct ac3dsp dsputil"
1656 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1657 aic_decoder_select="dsputil golomb"
1658 alac_encoder_select="lpc"
1659 als_decoder_select="dsputil"
1660 amrnb_decoder_select="lsp"
1661 amrwb_decoder_select="lsp"
1662 amv_decoder_select="sp5x_decoder"
1663 ape_decoder_select="dsputil"
1664 asv1_decoder_select="dsputil"
1665 asv1_encoder_select="dsputil"
1666 asv2_decoder_select="dsputil"
1667 asv2_encoder_select="dsputil"
1668 atrac1_decoder_select="mdct sinewin"
1669 atrac3_decoder_select="mdct"
1670 atrac3p_decoder_select="mdct sinewin"
1671 bink_decoder_select="dsputil hpeldsp"
1672 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1673 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1674 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1675 cllc_decoder_select="dsputil"
1676 comfortnoise_encoder_select="lpc"
1677 cook_decoder_select="dsputil mdct sinewin"
1678 cscd_decoder_select="lzo"
1679 cscd_decoder_suggest="zlib"
1680 dca_decoder_select="mdct"
1681 dnxhd_decoder_select="dsputil"
1682 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1683 dvvideo_decoder_select="dsputil"
1684 dvvideo_encoder_select="dsputil"
1685 dxa_decoder_deps="zlib"
1686 eac3_decoder_select="ac3_decoder"
1687 eac3_encoder_select="ac3_encoder"
1688 eamad_decoder_select="aandcttables dsputil mpegvideo"
1689 eatgq_decoder_select="aandcttables dsputil"
1690 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1691 ffv1_decoder_select="dsputil golomb rangecoder"
1692 ffv1_encoder_select="dsputil rangecoder"
1693 ffvhuff_decoder_select="huffyuv_decoder"
1694 ffvhuff_encoder_select="huffyuv_encoder"
1695 fic_decoder_select="dsputil golomb"
1696 flac_decoder_select="golomb"
1697 flac_encoder_select="dsputil golomb lpc"
1698 flashsv_decoder_deps="zlib"
1699 flashsv_encoder_deps="zlib"
1700 flashsv2_decoder_deps="zlib"
1701 flv_decoder_select="h263_decoder"
1702 flv_encoder_select="h263_encoder"
1703 fourxm_decoder_select="dsputil"
1704 fraps_decoder_select="dsputil huffman"
1705 g2m_decoder_deps="zlib"
1706 g2m_decoder_select="dsputil"
1707 h261_decoder_select="error_resilience mpegvideo"
1708 h261_encoder_select="aandcttables mpegvideoenc"
1709 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1710 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1711 h263i_decoder_select="h263_decoder"
1712 h263p_encoder_select="h263_encoder"
1713 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1714 h264_decoder_suggest="error_resilience"
1715 hevc_decoder_select="dsputil golomb videodsp"
1716 huffyuv_decoder_select="dsputil"
1717 huffyuv_encoder_select="dsputil huffman"
1718 iac_decoder_select="imc_decoder"
1719 imc_decoder_select="dsputil fft mdct sinewin"
1720 indeo3_decoder_select="hpeldsp"
1721 interplay_video_decoder_select="hpeldsp"
1722 jpegls_decoder_select="golomb mjpeg_decoder"
1723 jpegls_encoder_select="golomb"
1724 jv_decoder_select="dsputil"
1725 lagarith_decoder_select="dsputil"
1726 ljpeg_encoder_select="aandcttables mpegvideoenc"
1727 loco_decoder_select="golomb"
1728 mdec_decoder_select="dsputil error_resilience mpegvideo"
1729 metasound_decoder_select="lsp mdct sinewin"
1730 mimic_decoder_select="dsputil hpeldsp"
1731 mjpeg_decoder_select="dsputil hpeldsp"
1732 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1733 mjpegb_decoder_select="mjpeg_decoder"
1734 mlp_decoder_select="dsputil mlp_parser"
1735 motionpixels_decoder_select="dsputil"
1736 mp1_decoder_select="mpegaudio"
1737 mp1float_decoder_select="mpegaudio"
1738 mp2_decoder_select="mpegaudio"
1739 mp2float_decoder_select="mpegaudio"
1740 mp3_decoder_select="mpegaudio"
1741 mp3adu_decoder_select="mpegaudio"
1742 mp3adufloat_decoder_select="mpegaudio"
1743 mp3float_decoder_select="mpegaudio"
1744 mp3on4_decoder_select="mpegaudio"
1745 mp3on4float_decoder_select="mpegaudio"
1746 mpc7_decoder_select="dsputil mpegaudiodsp"
1747 mpc8_decoder_select="dsputil mpegaudiodsp"
1748 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1749 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1750 mpeg1video_decoder_select="error_resilience mpegvideo"
1751 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1752 mpeg2video_decoder_select="error_resilience mpegvideo"
1753 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1754 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1755 mpeg4_encoder_select="h263_encoder"
1756 msmpeg4v1_decoder_select="h263_decoder"
1757 msmpeg4v2_decoder_select="h263_decoder"
1758 msmpeg4v2_encoder_select="h263_encoder"
1759 msmpeg4v3_decoder_select="h263_decoder"
1760 msmpeg4v3_encoder_select="h263_encoder"
1761 mss2_decoder_select="error_resilience vc1_decoder"
1762 mxpeg_decoder_select="mjpeg_decoder"
1763 nellymoser_decoder_select="mdct sinewin"
1764 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1765 nuv_decoder_select="dsputil lzo"
1766 png_decoder_deps="zlib"
1767 png_decoder_select="dsputil"
1768 png_encoder_deps="zlib"
1769 png_encoder_select="dsputil"
1770 prores_decoder_select="dsputil"
1771 prores_encoder_select="dsputil"
1772 qcelp_decoder_select="lsp"
1773 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1774 ra_144_encoder_select="audio_frame_queue lpc"
1775 ralf_decoder_select="golomb"
1776 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1777 rv10_encoder_select="h263_encoder"
1778 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1779 rv20_encoder_select="h263_encoder"
1780 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1781 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1782 shorten_decoder_select="golomb"
1783 sipr_decoder_select="lsp"
1784 sp5x_decoder_select="mjpeg_decoder"
1785 svq1_decoder_select="hpeldsp"
1786 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1787 svq3_decoder_select="h264_decoder hpeldsp mpegvideo"
1788 svq3_decoder_suggest="zlib"
1789 tak_decoder_select="dsputil"
1790 theora_decoder_select="vp3_decoder"
1791 thp_decoder_select="mjpeg_decoder"
1792 tiff_decoder_suggest="zlib"
1793 tiff_encoder_suggest="zlib"
1794 truehd_decoder_select="mlp_decoder"
1795 truemotion2_decoder_select="dsputil"
1796 truespeech_decoder_select="dsputil"
1797 tscc_decoder_deps="zlib"
1798 twinvq_decoder_select="mdct lsp sinewin"
1799 utvideo_decoder_select="dsputil"
1800 utvideo_encoder_select="dsputil huffman"
1801 vble_decoder_select="dsputil"
1802 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1803 vc1image_decoder_select="vc1_decoder"
1804 vorbis_decoder_select="mdct"
1805 vorbis_encoder_select="mdct"
1806 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1807 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1808 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1809 vp6a_decoder_select="vp6_decoder"
1810 vp6f_decoder_select="vp6_decoder"
1811 vp8_decoder_select="h264pred videodsp"
1812 vp9_decoder_select="videodsp"
1813 webp_decoder_select="vp8_decoder"
1814 wmapro_decoder_select="mdct sinewin"
1815 wmav1_decoder_select="mdct sinewin"
1816 wmav1_encoder_select="mdct sinewin"
1817 wmav2_decoder_select="mdct sinewin"
1818 wmav2_encoder_select="mdct sinewin"
1819 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1820 wmv1_decoder_select="h263_decoder"
1821 wmv1_encoder_select="h263_encoder"
1822 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1823 wmv2_encoder_select="h263_encoder"
1824 wmv3_decoder_select="vc1_decoder"
1825 wmv3image_decoder_select="wmv3_decoder"
1826 zerocodec_decoder_deps="zlib"
1827 zlib_decoder_deps="zlib"
1828 zlib_encoder_deps="zlib"
1829 zmbv_decoder_deps="zlib"
1830 zmbv_encoder_deps="zlib"
1831
1832 # hardware accelerators
1833 dxva2_deps="dxva2api_h"
1834 vaapi_deps="va_va_h"
1835 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1836 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1837 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1838
1839 h263_vaapi_hwaccel_deps="vaapi"
1840 h263_vaapi_hwaccel_select="h263_decoder"
1841 h263_vdpau_hwaccel_deps="vdpau"
1842 h263_vdpau_hwaccel_select="h263_decoder"
1843 h264_dxva2_hwaccel_deps="dxva2"
1844 h264_dxva2_hwaccel_select="h264_decoder"
1845 h264_vaapi_hwaccel_deps="vaapi"
1846 h264_vaapi_hwaccel_select="h264_decoder"
1847 h264_vda_hwaccel_deps="vda"
1848 h264_vda_hwaccel_select="h264_decoder"
1849 h264_vdpau_hwaccel_deps="vdpau"
1850 h264_vdpau_hwaccel_select="h264_decoder"
1851 mpeg1_vdpau_hwaccel_deps="vdpau"
1852 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1853 mpeg2_dxva2_hwaccel_deps="dxva2"
1854 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1855 mpeg2_vaapi_hwaccel_deps="vaapi"
1856 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1857 mpeg2_vdpau_hwaccel_deps="vdpau"
1858 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1859 mpeg4_vaapi_hwaccel_deps="vaapi"
1860 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1861 mpeg4_vdpau_hwaccel_deps="vdpau"
1862 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1863 vc1_dxva2_hwaccel_deps="dxva2"
1864 vc1_dxva2_hwaccel_select="vc1_decoder"
1865 vc1_vaapi_hwaccel_deps="vaapi"
1866 vc1_vaapi_hwaccel_select="vc1_decoder"
1867 vc1_vdpau_hwaccel_deps="vdpau"
1868 vc1_vdpau_hwaccel_select="vc1_decoder"
1869 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1870 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1871 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1872
1873 # parsers
1874 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1875 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1876 mpegvideo_parser_select="error_resilience mpegvideo"
1877 vc1_parser_select="mpegvideo"
1878
1879 # external libraries
1880 libfaac_encoder_deps="libfaac"
1881 libfaac_encoder_select="audio_frame_queue"
1882 libfdk_aac_decoder_deps="libfdk_aac"
1883 libfdk_aac_encoder_deps="libfdk_aac"
1884 libfdk_aac_encoder_select="audio_frame_queue"
1885 libgsm_decoder_deps="libgsm"
1886 libgsm_encoder_deps="libgsm"
1887 libgsm_ms_decoder_deps="libgsm"
1888 libgsm_ms_encoder_deps="libgsm"
1889 libilbc_decoder_deps="libilbc"
1890 libilbc_encoder_deps="libilbc"
1891 libmp3lame_encoder_deps="libmp3lame"
1892 libmp3lame_encoder_select="audio_frame_queue"
1893 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1894 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1895 libopencore_amrnb_encoder_select="audio_frame_queue"
1896 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1897 libopenjpeg_decoder_deps="libopenjpeg"
1898 libopenjpeg_encoder_deps="libopenjpeg"
1899 libopus_decoder_deps="libopus"
1900 libopus_encoder_deps="libopus"
1901 libopus_encoder_select="audio_frame_queue"
1902 libschroedinger_decoder_deps="libschroedinger"
1903 libschroedinger_encoder_deps="libschroedinger"
1904 libspeex_decoder_deps="libspeex"
1905 libspeex_encoder_deps="libspeex"
1906 libspeex_encoder_select="audio_frame_queue"
1907 libtheora_encoder_deps="libtheora"
1908 libvo_aacenc_encoder_deps="libvo_aacenc"
1909 libvo_aacenc_encoder_select="audio_frame_queue"
1910 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1911 libvorbis_encoder_deps="libvorbis"
1912 libvorbis_encoder_select="audio_frame_queue"
1913 libvpx_vp8_decoder_deps="libvpx"
1914 libvpx_vp8_encoder_deps="libvpx"
1915 libvpx_vp9_decoder_deps="libvpx"
1916 libvpx_vp9_encoder_deps="libvpx"
1917 libwavpack_encoder_deps="libwavpack"
1918 libwebp_encoder_deps="libwebp"
1919 libx264_encoder_deps="libx264"
1920 libx265_encoder_deps="libx265"
1921 libxavs_encoder_deps="libxavs"
1922 libxvid_encoder_deps="libxvid"
1923
1924 # demuxers / muxers
1925 ac3_demuxer_select="ac3_parser"
1926 asf_demuxer_select="riffdec"
1927 asf_muxer_select="riffenc"
1928 asf_stream_muxer_select="asf_muxer"
1929 avi_demuxer_select="riffdec"
1930 avi_muxer_select="riffenc"
1931 avisynth_demuxer_deps="avisynth"
1932 avisynth_demuxer_select="riffdec"
1933 caf_demuxer_select="riffdec"
1934 dirac_demuxer_select="dirac_parser"
1935 dxa_demuxer_select="riffdec"
1936 eac3_demuxer_select="ac3_parser"
1937 f4v_muxer_select="mov_muxer"
1938 flac_demuxer_select="flac_parser"
1939 hds_muxer_select="flv_muxer"
1940 hls_muxer_select="mpegts_muxer"
1941 ipod_muxer_select="mov_muxer"
1942 ismv_muxer_select="mov_muxer"
1943 matroska_audio_muxer_select="matroska_muxer"
1944 matroska_demuxer_select="riffdec"
1945 matroska_demuxer_suggest="bzlib lzo zlib"
1946 matroska_muxer_select="riffenc"
1947 mmf_muxer_select="riffenc"
1948 mov_demuxer_select="riffdec"
1949 mov_demuxer_suggest="zlib"
1950 mov_muxer_select="riffenc rtpenc_chain"
1951 mp3_demuxer_select="mpegaudio_parser"
1952 mp4_muxer_select="mov_muxer"
1953 mpegts_muxer_select="adts_muxer latm_muxer"
1954 mpegtsraw_demuxer_select="mpegts_demuxer"
1955 mxf_d10_muxer_select="mxf_muxer"
1956 nut_muxer_select="riffenc"
1957 nuv_demuxer_select="riffdec"
1958 ogg_demuxer_select="golomb"
1959 psp_muxer_select="mov_muxer"
1960 rtp_demuxer_select="sdp_demuxer"
1961 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1962 rtsp_demuxer_select="http_protocol rtpdec"
1963 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1964 sap_demuxer_select="sdp_demuxer"
1965 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1966 sdp_demuxer_select="rtpdec"
1967 smoothstreaming_muxer_select="ismv_muxer"
1968 spdif_muxer_select="aac_parser"
1969 tak_demuxer_select="tak_parser"
1970 tg2_muxer_select="mov_muxer"
1971 tgp_muxer_select="mov_muxer"
1972 w64_demuxer_select="wav_demuxer"
1973 wav_demuxer_select="riffdec"
1974 wav_muxer_select="riffenc"
1975 webm_muxer_select="riffenc"
1976 wtv_demuxer_select="riffdec"
1977 xmv_demuxer_select="riffdec"
1978 xwma_demuxer_select="riffdec"
1979
1980 # indevs / outdevs
1981 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1982 alsa_outdev_deps="alsa_asoundlib_h"
1983 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1984 dv1394_indev_deps="dv1394"
1985 dv1394_indev_select="dv_demuxer"
1986 fbdev_indev_deps="linux_fb_h"
1987 jack_indev_deps="jack_jack_h pthreads"
1988 libcdio_indev_deps="libcdio"
1989 libdc1394_indev_deps="libdc1394"
1990 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1991 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1992 pulse_indev_deps="libpulse"
1993 sndio_indev_deps="sndio_h"
1994 sndio_outdev_deps="sndio_h"
1995 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1996 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1997 vfwcap_indev_extralibs="-lavicap32"
1998 x11grab_indev_deps="x11grab XShmCreateImage"
1999
2000 # protocols
2001 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2002 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2003 ffrtmpcrypt_protocol_select="tcp_protocol"
2004 ffrtmphttp_protocol_deps="!librtmp_protocol"
2005 ffrtmphttp_protocol_select="http_protocol"
2006 gopher_protocol_select="network"
2007 http_protocol_select="tcp_protocol"
2008 httpproxy_protocol_select="tcp_protocol"
2009 https_protocol_select="tls_protocol"
2010 librtmp_protocol_deps="librtmp"
2011 librtmpe_protocol_deps="librtmp"
2012 librtmps_protocol_deps="librtmp"
2013 librtmpt_protocol_deps="librtmp"
2014 librtmpte_protocol_deps="librtmp"
2015 mmsh_protocol_select="http_protocol"
2016 mmst_protocol_select="network"
2017 rtmp_protocol_deps="!librtmp_protocol"
2018 rtmp_protocol_select="tcp_protocol"
2019 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2020 rtmps_protocol_deps="!librtmp_protocol"
2021 rtmps_protocol_select="tls_protocol"
2022 rtmpt_protocol_select="ffrtmphttp_protocol"
2023 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2024 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2025 rtp_protocol_select="udp_protocol"
2026 sctp_protocol_deps="struct_sctp_event_subscribe"
2027 sctp_protocol_select="network"
2028 srtp_protocol_select="rtp_protocol"
2029 tcp_protocol_select="network"
2030 tls_protocol_deps_any="openssl gnutls"
2031 tls_protocol_select="tcp_protocol"
2032 udp_protocol_select="network"
2033 unix_protocol_deps="sys_un_h"
2034 unix_protocol_select="network"
2035
2036 # filters
2037 blackframe_filter_deps="gpl"
2038 boxblur_filter_deps="gpl"
2039 cropdetect_filter_deps="gpl"
2040 delogo_filter_deps="gpl"
2041 drawtext_filter_deps="libfreetype"
2042 frei0r_filter_deps="frei0r dlopen"
2043 frei0r_filter_extralibs='$ldl'
2044 frei0r_src_filter_deps="frei0r dlopen"
2045 frei0r_src_filter_extralibs='$ldl'
2046 hqdn3d_filter_deps="gpl"
2047 interlace_filter_deps="gpl"
2048 ocv_filter_deps="libopencv"
2049 resample_filter_deps="avresample"
2050 scale_filter_deps="swscale"
2051
2052 # examples
2053 avcodec_example_deps="avcodec avutil"
2054 filter_audio_example_deps="avfilter avutil"
2055 metadata_example_deps="avformat avutil"
2056 output_example_deps="avcodec avformat avutil swscale"
2057 transcode_aac_example_deps="avcodec avformat avresample"
2058
2059 # libraries
2060 avcodec_deps="avutil"
2061 avdevice_deps="avutil avcodec avformat"
2062 avfilter_deps="avutil"
2063 avformat_deps="avutil avcodec"
2064 avresample_deps="avutil"
2065 swscale_deps="avutil"
2066
2067 # programs
2068 avconv_deps="avcodec avfilter avformat avresample swscale"
2069 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2070                fps_filter null_filter resample_filter scale_filter
2071                setpts_filter trim_filter"
2072 avplay_deps="avcodec avformat avresample swscale sdl"
2073 avplay_libs='$sdl_libs'
2074 avplay_select="rdft"
2075 avprobe_deps="avcodec avformat"
2076 avserver_deps="avformat fork !shared"
2077 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2078
2079 # documentation
2080 pod2man_deps="doc"
2081 texi2html_deps="doc"
2082
2083 # default parameters
2084
2085 logfile="config.log"
2086
2087 # installation paths
2088 prefix_default="/usr/local"
2089 bindir_default='${prefix}/bin'
2090 datadir_default='${prefix}/share/avconv'
2091 docdir_default='${prefix}/share/doc/libav'
2092 incdir_default='${prefix}/include'
2093 libdir_default='${prefix}/lib'
2094 mandir_default='${prefix}/share/man'
2095 shlibdir_default="$libdir_default"
2096
2097 # toolchain
2098 ar_default="ar"
2099 cc_default="gcc"
2100 host_cc_default="gcc"
2101 cp_f="cp -f"
2102 ln_s="ln -s -f"
2103 nm_default="nm -g"
2104 objformat="elf"
2105 pkg_config_default=pkg-config
2106 ranlib="ranlib"
2107 strip="strip"
2108 yasmexe="yasm"
2109
2110 nogas=":"
2111
2112 # machine
2113 arch_default=$(uname -m)
2114 cpu="generic"
2115
2116 # OS
2117 target_os_default=$(tolower $(uname -s))
2118 host_os=$target_os_default
2119
2120 # configurable options
2121 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2122
2123 enable asm
2124 enable debug
2125 enable doc
2126 enable optimizations
2127 enable safe_bitstream_reader
2128 enable static
2129 enable swscale_alpha
2130
2131 # By default, enable only those hwaccels that have no external dependencies.
2132 enable dxva2 vdpau
2133
2134 # build settings
2135 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2136 LIBPREF="lib"
2137 LIBSUF=".a"
2138 FULLNAME='$(NAME)$(BUILDSUF)'
2139 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2140 SLIBPREF="lib"
2141 SLIBSUF=".so"
2142 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2143 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2144 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2145 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2146 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2147 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2148
2149 asflags_filter=echo
2150 cflags_filter=echo
2151 ldflags_filter=echo
2152
2153 AS_C='-c'
2154 AS_O='-o $@'
2155 CC_C='-c'
2156 CC_E='-E -o $@'
2157 CC_O='-o $@'
2158 LD_O='-o $@'
2159 LD_LIB='-l%'
2160 LD_PATH='-L'
2161 HOSTCC_C='-c'
2162 HOSTCC_E='-E -o $@'
2163 HOSTCC_O='-o $@'
2164 HOSTLD_O='-o $@'
2165
2166 host_libs='-lm'
2167 host_cflags_filter=echo
2168 host_ldflags_filter=echo
2169
2170 target_path='$(CURDIR)'
2171
2172 # since the object filename is not given with the -MM flag, the compiler
2173 # is only able to print the basename, and we must add the path ourselves
2174 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2175 DEPFLAGS='-MM'
2176
2177 # find source path
2178 if test -f configure; then
2179     source_path=.
2180 else
2181     source_path=$(cd $(dirname "$0"); pwd)
2182     echo "$source_path" | grep -q '[[:blank:]]' &&
2183         die "Out of tree builds are impossible with whitespace in source path."
2184     test -e "$source_path/config.h" &&
2185         die "Out of tree builds are impossible with config.h in source dir."
2186 fi
2187
2188 for v in "$@"; do
2189     r=${v#*=}
2190     l=${v%"$r"}
2191     r=$(sh_quote "$r")
2192     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2193 done
2194
2195 find_things(){
2196     thing=$1
2197     pattern=$2
2198     file=$source_path/$3
2199     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2200 }
2201
2202 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2203 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2204 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2205 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2206 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2207 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2208 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2209 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2210 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2211 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2212 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2213
2214 ALL_COMPONENTS="
2215     $BSF_LIST
2216     $DECODER_LIST
2217     $DEMUXER_LIST
2218     $ENCODER_LIST
2219     $FILTER_LIST
2220     $HWACCEL_LIST
2221     $INDEV_LIST
2222     $MUXER_LIST
2223     $OUTDEV_LIST
2224     $PARSER_LIST
2225     $PROTOCOL_LIST
2226 "
2227
2228 for n in $COMPONENT_LIST; do
2229     v=$(toupper ${n%s})_LIST
2230     eval enable \$$v
2231     eval ${n}_if_any="\$$v"
2232 done
2233
2234 enable $ARCH_EXT_LIST
2235
2236 die_unknown(){
2237     echo "Unknown option \"$1\"."
2238     echo "See $0 --help for available options."
2239     exit 1
2240 }
2241
2242 print_3_columns() {
2243     cat | tr ' ' '\n' | sort | pr -r -3 -t
2244 }
2245
2246 show_list() {
2247     suffix=_$1
2248     shift
2249     echo $* | sed s/$suffix//g | print_3_columns
2250     exit 0
2251 }
2252
2253 rand_list(){
2254     IFS=', '
2255     set -- $*
2256     unset IFS
2257     for thing; do
2258         comp=${thing%:*}
2259         prob=${thing#$comp}
2260         prob=${prob#:}
2261         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2262         echo "prob ${prob:-0.5}"
2263         printf '%s\n' $comp
2264     done
2265 }
2266
2267 do_random(){
2268     action=$1
2269     shift
2270     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2271     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2272 }
2273
2274 for opt do
2275     optval="${opt#*=}"
2276     case "$opt" in
2277         --extra-ldflags=*)
2278             add_ldflags $optval
2279         ;;
2280         --extra-libs=*)
2281             add_extralibs $optval
2282         ;;
2283         --disable-devices)
2284             disable $INDEV_LIST $OUTDEV_LIST
2285         ;;
2286         --enable-debug=*)
2287             debuglevel="$optval"
2288         ;;
2289         --disable-programs)
2290             disable $PROGRAM_LIST
2291         ;;
2292         --disable-everything)
2293             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2294         ;;
2295         --disable-all)
2296             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2297             disable $LIBRARY_LIST $PROGRAM_LIST doc
2298         ;;
2299         --enable-random|--disable-random)
2300             action=${opt%%-random}
2301             do_random ${action#--} $COMPONENT_LIST
2302         ;;
2303         --enable-random=*|--disable-random=*)
2304             action=${opt%%-random=*}
2305             do_random ${action#--} $optval
2306         ;;
2307         --enable-*=*|--disable-*=*)
2308             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2309             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2310             eval list=\$$(toupper $thing)_LIST
2311             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2312             $action $(filter "$name" $list)
2313         ;;
2314         --enable-?*|--disable-?*)
2315             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2316             if is_in $option $COMPONENT_LIST; then
2317                 test $action = disable && action=unset
2318                 eval $action \$$(toupper ${option%s})_LIST
2319             elif is_in $option $CMDLINE_SELECT; then
2320                 $action $option
2321             else
2322                 die_unknown $opt
2323             fi
2324         ;;
2325         --list-*)
2326             NAME="${opt#--list-}"
2327             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2328             NAME=${NAME%s}
2329             eval show_list $NAME \$$(toupper $NAME)_LIST
2330         ;;
2331         --help|-h) show_help
2332         ;;
2333         *)
2334             optname="${opt%%=*}"
2335             optname="${optname#--}"
2336             optname=$(echo "$optname" | sed 's/-/_/g')
2337             if is_in $optname $CMDLINE_SET; then
2338                 eval $optname='$optval'
2339             elif is_in $optname $CMDLINE_APPEND; then
2340                 append $optname "$optval"
2341             else
2342                 die_unknown $opt
2343             fi
2344         ;;
2345     esac
2346 done
2347
2348 disabled logging && logfile=/dev/null
2349
2350 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2351 set >> $logfile
2352
2353 test -n "$cross_prefix" && enable cross_compile
2354
2355 if enabled cross_compile; then
2356     test -n "$arch" && test -n "$target_os" ||
2357         die "Must specify target arch and OS when cross-compiling"
2358 fi
2359
2360 ar_default="${cross_prefix}${ar_default}"
2361 cc_default="${cross_prefix}${cc_default}"
2362 nm_default="${cross_prefix}${nm_default}"
2363 pkg_config_default="${cross_prefix}${pkg_config_default}"
2364 ranlib="${cross_prefix}${ranlib}"
2365 strip="${cross_prefix}${strip}"
2366
2367 sysinclude_default="${sysroot}/usr/include"
2368
2369 case "$toolchain" in
2370     clang-asan)
2371         cc_default="clang"
2372         add_cflags  -fsanitize=address
2373         add_ldflags -fsanitize=address
2374     ;;
2375     clang-tsan)
2376         cc_default="clang"
2377         add_cflags  -fsanitize=thread -pie
2378         add_ldflags -fsanitize=thread -pie
2379     ;;
2380     clang-usan)
2381         cc_default="clang"
2382         add_cflags  -fsanitize=undefined
2383         add_ldflags -fsanitize=undefined
2384     ;;
2385     gcc-asan)
2386         cc_default="gcc"
2387         add_cflags  -fsanitize=address
2388         add_ldflags -fsanitize=address
2389     ;;
2390     gcc-tsan)
2391         cc_default="gcc"
2392         add_cflags  -fsanitize=thread -pie -fPIC
2393         add_ldflags -fsanitize=thread -pie -fPIC
2394     ;;
2395     gcc-usan)
2396         cc_default="gcc"
2397         add_cflags  -fsanitize=undefined
2398         add_ldflags -fsanitize=undefined
2399     ;;
2400     valgrind-massif)
2401         target_exec_default="valgrind"
2402         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2403     ;;
2404     valgrind-memcheck)
2405         target_exec_default="valgrind"
2406         target_exec_args="--track-origins=yes --leak-check=full"
2407     ;;
2408     msvc)
2409         # Check whether the current MSVC version needs the C99 converter.
2410         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2411         # support enough of C99 to build libav. Default to the new
2412         # behaviour if the regexp was unable to match anything, since this
2413         # successfully parses the version number of existing supported
2414         # versions that require the converter (MSVC 2010 and 2012).
2415         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2416         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2417             cc_default="cl"
2418         else
2419             cc_default="c99wrap cl"
2420         fi
2421         ld_default="link"
2422         nm_default="dumpbin -symbols"
2423         ar_default="lib"
2424         target_os_default="win32"
2425         # Use a relative path for TMPDIR. This makes sure all the
2426         # ffconf temp files are written with a relative path, avoiding
2427         # issues with msys/win32 path conversion for MSVC parameters
2428         # such as -Fo<file> or -out:<file>.
2429         TMPDIR=.
2430     ;;
2431     icl)
2432         cc_default="icl"
2433         ld_default="xilink"
2434         nm_default="dumpbin -symbols"
2435         ar_default="xilib"
2436         target_os_default="win32"
2437         TMPDIR=.
2438     ;;
2439     gcov)
2440         add_cflags  -fprofile-arcs -ftest-coverage
2441         add_ldflags -fprofile-arcs -ftest-coverage
2442     ;;
2443     hardened)
2444         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2445         add_ldflags -Wl,-z,relro -Wl,-z,now
2446     ;;
2447     ?*)
2448         die "Unknown toolchain $toolchain"
2449     ;;
2450 esac
2451
2452 set_default arch cc pkg_config sysinclude target_exec target_os
2453 enabled cross_compile || host_cc_default=$cc
2454 set_default host_cc
2455
2456 if ! $pkg_config --version >/dev/null 2>&1; then
2457     warn "$pkg_config not found, library detection may fail."
2458     pkg_config=false
2459 fi
2460
2461 exesuf() {
2462     case $1 in
2463         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2464     esac
2465 }
2466
2467 EXESUF=$(exesuf $target_os)
2468 HOSTEXESUF=$(exesuf $host_os)
2469
2470 # set temporary file name
2471 : ${TMPDIR:=$TEMPDIR}
2472 : ${TMPDIR:=$TMP}
2473 : ${TMPDIR:=/tmp}
2474
2475 if ! check_cmd mktemp -u XXXXXX; then
2476     # simple replacement for missing mktemp
2477     # NOT SAFE FOR GENERAL USE
2478     mktemp(){
2479         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2480     }
2481 fi
2482
2483 tmpfile(){
2484     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2485         (set -C; exec > $tmp) 2>/dev/null ||
2486         die "Unable to create temporary file in $TMPDIR."
2487     append TMPFILES $tmp
2488     eval $1=$tmp
2489 }
2490
2491 trap 'rm -f -- $TMPFILES' EXIT
2492
2493 tmpfile TMPASM .asm
2494 tmpfile TMPC   .c
2495 tmpfile TMPE   $EXESUF
2496 tmpfile TMPH   .h
2497 tmpfile TMPO   .o
2498 tmpfile TMPS   .S
2499 tmpfile TMPSH  .sh
2500 tmpfile TMPV   .ver
2501
2502 unset -f mktemp
2503
2504 chmod +x $TMPE
2505
2506 # make sure we can execute files in $TMPDIR
2507 cat > $TMPSH 2>> $logfile <<EOF
2508 #! /bin/sh
2509 EOF
2510 chmod +x $TMPSH >> $logfile 2>&1
2511 if ! $TMPSH >> $logfile 2>&1; then
2512     cat <<EOF
2513 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2514 variable to another directory and make sure that it is not mounted noexec.
2515 EOF
2516     die "Sanity test failed."
2517 fi
2518
2519 ccc_flags(){
2520     for flag; do
2521         case $flag in
2522             -std=c99)           echo -c99                       ;;
2523             -mcpu=*)            echo -arch ${flag#*=}           ;;
2524             -mieee)             echo -ieee                      ;;
2525             -O*|-fast)          echo $flag                      ;;
2526             -fno-math-errno)    echo -assume nomath_errno       ;;
2527             -g)                 echo -g3                        ;;
2528             -Wall)              echo -msg_enable level2         ;;
2529             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2530             -Wl,*)              echo $flag                      ;;
2531             -f*|-W*)                                            ;;
2532             *)                  echo $flag                      ;;
2533         esac
2534    done
2535 }
2536
2537 cparser_flags(){
2538     for flag; do
2539         case $flag in
2540             -Wno-switch)             echo -Wno-switch-enum ;;
2541             -Wno-format-zero-length) ;;
2542             -Wdisabled-optimization) ;;
2543             -Wno-pointer-sign)       echo -Wno-other ;;
2544             *)                       echo $flag ;;
2545         esac
2546     done
2547 }
2548
2549 msvc_common_flags(){
2550     for flag; do
2551         case $flag in
2552             # In addition to specifying certain flags under the compiler
2553             # specific filters, they must be specified here as well or else the
2554             # generic catch all at the bottom will print the original flag.
2555             -Wall)                ;;
2556             -std=c99)             ;;
2557             # Common flags
2558             -fomit-frame-pointer) ;;
2559             -g)                   echo -Z7 ;;
2560             -fno-math-errno)      ;;
2561             -fno-common)          ;;
2562             -fno-signed-zeros)    ;;
2563             -fPIC)                ;;
2564             -mthumb)              ;;
2565             -march=*)             ;;
2566             -lz)                  echo zlib.lib ;;
2567             -lavifil32)           echo vfw32.lib ;;
2568             -lavicap32)           echo vfw32.lib user32.lib ;;
2569             -l*)                  echo ${flag#-l}.lib ;;
2570             *)                    echo $flag ;;
2571         esac
2572     done
2573 }
2574
2575 msvc_flags(){
2576     msvc_common_flags "$@"
2577     for flag; do
2578         case $flag in
2579             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2580                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2581                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2582                                        -wd4273 ;;
2583         esac
2584     done
2585 }
2586
2587 icl_flags(){
2588     msvc_common_flags "$@"
2589     for flag; do
2590         case $flag in
2591             # Despite what Intel's documentation says -Wall, which is supported
2592             # on Windows, does enable remarks so disable them here.
2593             -Wall)                echo $flag -Qdiag-disable:remark ;;
2594             -std=c99)             echo -Qstd=c99 ;;
2595         esac
2596     done
2597 }
2598
2599 pgi_flags(){
2600     for flag; do
2601         case $flag in
2602             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2603             -fomit-frame-pointer) echo -Mnoframe ;;
2604             -g)                   echo -gopt ;;
2605             *)                    echo $flag ;;
2606         esac
2607     done
2608 }
2609
2610 suncc_flags(){
2611     for flag; do
2612         case $flag in
2613             -march=*|-mcpu=*)
2614                 case "${flag#*=}" in
2615                     native)                   echo -xtarget=native       ;;
2616                     v9|niagara)               echo -xarch=sparc          ;;
2617                     ultrasparc)               echo -xarch=sparcvis       ;;
2618                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2619                     i586|pentium)             echo -xchip=pentium        ;;
2620                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2621                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2622                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2623                     pentium4*)          echo -xtarget=pentium4           ;;
2624                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2625                     *-sse3)             echo -xarch=sse3                 ;;
2626                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2627                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2628                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2629                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2630                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2631                     k8|opteron|athlon64|athlon-fx)
2632                                                echo -xarch=sse2a         ;;
2633                     athlon*)                   echo -xarch=pentium_proa  ;;
2634                 esac
2635                 ;;
2636             -std=c99)             echo -xc99              ;;
2637             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2638             -fPIC)                echo -KPIC -xcode=pic32 ;;
2639             -W*,*)                echo $flag              ;;
2640             -f*-*|-W*|-mimpure-text)                      ;;
2641             -shared)              echo -G                 ;;
2642             *)                    echo $flag              ;;
2643         esac
2644     done
2645 }
2646
2647 tms470_flags(){
2648     for flag; do
2649         case $flag in
2650             -march=*|-mcpu=*)
2651                 case "${flag#*=}" in
2652                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2653                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2654                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2655                     armv6*|arm11*)          echo -mv=6   ;;
2656                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2657                                             echo -mv=5e  ;;
2658                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2659                 esac
2660                 ;;
2661             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2662             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2663             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2664             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2665             -msoft-float)   echo --float_support=vfplib       ;;
2666             -O[0-3]|-mf=*)  echo $flag                        ;;
2667             -g)             echo -g -mn                       ;;
2668             -pds=*)         echo $flag                        ;;
2669             -D*|-I*)        echo $flag                        ;;
2670             --gcc|--abi=*)  echo $flag                        ;;
2671             -me)            echo $flag                        ;;
2672         esac
2673     done
2674 }
2675
2676 probe_cc(){
2677     pfx=$1
2678     _cc=$2
2679
2680     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2681     unset _ld_o _ldflags _ld_lib _ld_path
2682     unset _depflags _DEPCMD _DEPFLAGS
2683     _flags_filter=echo
2684
2685     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2686         _type=llvm_gcc
2687         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2688         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2689         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2690         _cflags_speed='-O3'
2691         _cflags_size='-Os'
2692     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2693         _type=gcc
2694         gcc_version=$($_cc --version | head -n1)
2695         gcc_basever=$($_cc -dumpversion)
2696         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2697         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2698         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2699         if ! $_cc -dumpversion | grep -q '^2\.'; then
2700             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2701         fi
2702         _cflags_speed='-O3'
2703         _cflags_size='-Os'
2704     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2705         _type=icc
2706         _ident=$($_cc --version | head -n1)
2707         _depflags='-MMD'
2708         _cflags_speed='-O3'
2709         _cflags_size='-Os'
2710         _cflags_noopt='-O1'
2711     elif $_cc -v 2>&1 | grep -q xlc; then
2712         _type=xlc
2713         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2714         _cflags_speed='-O5'
2715         _cflags_size='-O5 -qcompact'
2716     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2717         _type=ccc
2718         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2719         _DEPFLAGS='-M'
2720         _cflags_speed='-fast'
2721         _cflags_size='-O1'
2722         _flags_filter=ccc_flags
2723     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2724         test -d "$sysroot" || die "No valid sysroot specified."
2725         _type=armcc
2726         _ident=$($_cc --vsn | head -n1)
2727         armcc_conf="$PWD/armcc.conf"
2728         $_cc --arm_linux_configure                 \
2729              --arm_linux_config_file="$armcc_conf" \
2730              --configure_sysroot="$sysroot"        \
2731              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2732              die "Error creating armcc configuration file."
2733         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2734         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2735         as_default="${cross_prefix}gcc"
2736         _depflags='-MMD'
2737         _cflags_speed='-O3'
2738         _cflags_size='-Os'
2739     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2740         _type=tms470
2741         _ident=$($_cc -version | head -n1 | tr -s ' ')
2742         _flags='--gcc --abi=eabi -me'
2743         _cc_e='-ppl -fe=$@'
2744         _cc_o='-fe=$@'
2745         _depflags='-ppa -ppd=$(@:.o=.d)'
2746         _cflags_speed='-O3 -mf=5'
2747         _cflags_size='-O3 -mf=2'
2748         _flags_filter=tms470_flags
2749     elif $_cc -v 2>&1 | grep -q clang; then
2750         _type=clang
2751         _ident=$($_cc --version | head -n1)
2752         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2753         _cflags_speed='-O3'
2754         _cflags_size='-Os'
2755     elif $_cc -V 2>&1 | grep -q Sun; then
2756         _type=suncc
2757         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2758         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2759         _DEPFLAGS='-xM1 -xc99'
2760         _ldflags='-std=c99'
2761         _cflags_speed='-O5'
2762         _cflags_size='-O5 -xspace'
2763         _flags_filter=suncc_flags
2764     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2765         _type=pathscale
2766         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2767         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2768         _cflags_speed='-O2'
2769         _cflags_size='-Os'
2770         _flags_filter='filter_out -Wdisabled-optimization'
2771     elif $_cc -v 2>&1 | grep -q Open64; then
2772         _type=open64
2773         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2774         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2775         _cflags_speed='-O2'
2776         _cflags_size='-Os'
2777         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2778     elif $_cc -V 2>&1 | grep -q Portland; then
2779         _type=pgi
2780         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2781         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2782         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2783         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2784         _cflags_noopt="-O1"
2785         _flags_filter=pgi_flags
2786     elif $_cc 2>&1 | grep -q Microsoft; then
2787         _type=msvc
2788         _ident=$($cc 2>&1 | head -n1)
2789         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2790         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2791         _cflags_speed="-O2"
2792         _cflags_size="-O1"
2793         if $_cc 2>&1 | grep -q Linker; then
2794             _ld_o='-out:$@'
2795         else
2796             _ld_o='-Fe$@'
2797         fi
2798         _cc_o='-Fo$@'
2799         _cc_e='-P -Fi$@'
2800         _flags_filter=msvc_flags
2801         _ld_lib='lib%.a'
2802         _ld_path='-libpath:'
2803         _flags='-nologo'
2804         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2805         if [ $pfx = hostcc ]; then
2806             append _cflags -Dsnprintf=_snprintf
2807         fi
2808     elif $_cc 2>&1 | grep -q Intel; then
2809         _type=icl
2810         _ident=$($cc 2>&1 | head -n1)
2811         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2812         # Not only is O3 broken on 13.x+ but it is slower on all previous
2813         # versions (tested) as well.
2814         _cflags_speed="-O2"
2815         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2816         if $_cc 2>&1 | grep -q Linker; then
2817             _ld_o='-out:$@'
2818         else
2819             _ld_o='-Fe$@'
2820         fi
2821         _cc_o='-Fo$@'
2822         _cc_e='-P'
2823         _flags_filter=icl_flags
2824         _ld_lib='lib%.a'
2825         _ld_path='-libpath:'
2826         # -Qdiag-error to make icl error when seeing certain unknown arguments
2827         _flags='-nologo -Qdiag-error:4044,10157'
2828         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2829         # with MSVC which enables it by default.
2830         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2831         if [ $pfx = hostcc ]; then
2832             append _cflags -Dsnprintf=_snprintf
2833         fi
2834     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2835         _type=cparser
2836         _ident=$($_cc --version | head -n1)
2837         _depflags='-MMD'
2838         _cflags_speed='-O4'
2839         _cflags_size='-O2'
2840         _flags_filter=cparser_flags
2841     fi
2842
2843     eval ${pfx}_type=\$_type
2844     eval ${pfx}_ident=\$_ident
2845 }
2846
2847 set_ccvars(){
2848     eval ${1}_C=\${_cc_c-\${${1}_C}}
2849     eval ${1}_E=\${_cc_e-\${${1}_E}}
2850     eval ${1}_O=\${_cc_o-\${${1}_O}}
2851
2852     if [ -n "$_depflags" ]; then
2853         eval ${1}_DEPFLAGS=\$_depflags
2854     else
2855         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2856         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2857         eval DEP${1}FLAGS=\$_flags
2858     fi
2859 }
2860
2861 probe_cc cc "$cc"
2862 cflags_filter=$_flags_filter
2863 cflags_speed=$_cflags_speed
2864 cflags_size=$_cflags_size
2865 cflags_noopt=$_cflags_noopt
2866 add_cflags $_flags $_cflags
2867 cc_ldflags=$_ldflags
2868 set_ccvars CC
2869
2870 probe_cc hostcc "$host_cc"
2871 host_cflags_filter=$_flags_filter
2872 add_host_cflags  $_flags $_cflags
2873 set_ccvars HOSTCC
2874
2875 test -n "$cc_type" && enable $cc_type ||
2876     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2877
2878 : ${as_default:=$cc}
2879 : ${dep_cc_default:=$cc}
2880 : ${ld_default:=$cc}
2881 : ${host_ld_default:=$host_cc}
2882 set_default ar as dep_cc ld host_ld
2883
2884 probe_cc as "$as"
2885 asflags_filter=$_flags_filter
2886 add_asflags $_flags $_cflags
2887 set_ccvars AS
2888
2889 probe_cc ld "$ld"
2890 ldflags_filter=$_flags_filter
2891 add_ldflags $_flags $_ldflags
2892 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2893 LD_O=${_ld_o-$LD_O}
2894 LD_LIB=${_ld_lib-$LD_LIB}
2895 LD_PATH=${_ld_path-$LD_PATH}
2896
2897 probe_cc hostld "$host_ld"
2898 host_ldflags_filter=$_flags_filter
2899 add_host_ldflags $_flags $_ldflags
2900 HOSTLD_O=${_ld_o-$HOSTLD_O}
2901
2902 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2903     probe_cc depcc "$dep_cc"
2904     CCDEP=${_DEPCMD:-$DEPCMD}
2905     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2906     DEPCCFLAGS=$_flags
2907 fi
2908
2909 if $ar 2>&1 | grep -q Microsoft; then
2910     arflags="-nologo"
2911     ar_o='-out:$@'
2912 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2913     arflags="rq"
2914     ar_o='$@'
2915 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2916     arflags='-Xany -r -c'
2917     ar_o='$@'
2918 else
2919     arflags="rc"
2920     ar_o='$@'
2921 fi
2922
2923 add_cflags $extra_cflags
2924 add_asflags $extra_cflags
2925
2926 if test -n "$sysroot"; then
2927     case "$cc_type" in
2928         gcc|llvm_gcc|clang)
2929             add_cppflags --sysroot="$sysroot"
2930             add_ldflags --sysroot="$sysroot"
2931         ;;
2932         tms470)
2933             add_cppflags -I"$sysinclude"
2934             add_ldflags  --sysroot="$sysroot"
2935         ;;
2936     esac
2937 fi
2938
2939 if test "$cpu" = host; then
2940     enabled cross_compile &&
2941         die "--cpu=host makes no sense when cross-compiling."
2942
2943     case "$cc_type" in
2944         gcc|llvm_gcc)
2945             check_native(){
2946                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2947                 sed -n "/cc1.*$1=/{
2948                             s/.*$1=\\([^ ]*\\).*/\\1/
2949                             p
2950                             q
2951                         }" $TMPE
2952             }
2953             cpu=$(check_native -march || check_native -mcpu)
2954         ;;
2955     esac
2956
2957     test "${cpu:-host}" = host &&
2958         die "--cpu=host not supported with compiler $cc"
2959 fi
2960
2961 # Deal with common $arch aliases
2962 case "$arch" in
2963     aarch64|arm64)
2964         arch="aarch64"
2965     ;;
2966     arm*)
2967         arch="arm"
2968     ;;
2969     mips*|IP*)
2970         arch="mips"
2971     ;;
2972     parisc*|hppa*)
2973         arch="parisc"
2974     ;;
2975     "Power Macintosh"|ppc*|powerpc*)
2976         arch="ppc"
2977     ;;
2978     s390|s390x)
2979         arch="s390"
2980     ;;
2981     sh4|sh)
2982         arch="sh4"
2983     ;;
2984     sun4u|sparc*)
2985         arch="sparc"
2986     ;;
2987     tilegx|tile-gx)
2988         arch="tilegx"
2989     ;;
2990     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2991         arch="x86"
2992     ;;
2993 esac
2994
2995 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2996 enable $arch
2997
2998 # Add processor-specific flags
2999 if enabled aarch64; then
3000
3001     case $cpu in
3002         armv*)
3003             cpuflags="-march=$cpu"
3004         ;;
3005         *)
3006             cpuflags="-mcpu=$cpu"
3007         ;;
3008     esac
3009
3010 elif enabled alpha; then
3011
3012     cpuflags="-mcpu=$cpu"
3013
3014 elif enabled arm; then
3015
3016     check_arm_arch() {
3017         check_cpp_condition stddef.h \
3018             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3019             $cpuflags
3020     }
3021
3022     probe_arm_arch() {
3023         if   check_arm_arch 4;        then echo armv4;
3024         elif check_arm_arch 4T;       then echo armv4t;
3025         elif check_arm_arch 5;        then echo armv5;
3026         elif check_arm_arch 5E;       then echo armv5e;
3027         elif check_arm_arch 5T;       then echo armv5t;
3028         elif check_arm_arch 5TE;      then echo armv5te;
3029         elif check_arm_arch 5TEJ;     then echo armv5te;
3030         elif check_arm_arch 6;        then echo armv6;
3031         elif check_arm_arch 6J;       then echo armv6j;
3032         elif check_arm_arch 6K;       then echo armv6k;
3033         elif check_arm_arch 6Z;       then echo armv6z;
3034         elif check_arm_arch 6ZK;      then echo armv6zk;
3035         elif check_arm_arch 6T2;      then echo armv6t2;
3036         elif check_arm_arch 7;        then echo armv7;
3037         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3038         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3039         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3040         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3041         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3042         fi
3043     }
3044
3045     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3046
3047     case $cpu in
3048         armv*)
3049             cpuflags="-march=$cpu"
3050             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3051         ;;
3052         *)
3053             cpuflags="-mcpu=$cpu"
3054             case $cpu in
3055                 cortex-a*)                               subarch=armv7a  ;;
3056                 cortex-r*)                               subarch=armv7r  ;;
3057                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3058                 arm11*)                                  subarch=armv6   ;;
3059                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3060                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3061                 *)                             subarch=$(probe_arm_arch) ;;
3062             esac
3063         ;;
3064     esac
3065
3066     case "$subarch" in
3067         armv5t*)    enable fast_clz                ;;
3068         armv[6-8]*) enable fast_clz fast_unaligned ;;
3069     esac
3070
3071 elif enabled avr32; then
3072
3073     case $cpu in
3074         ap7[02]0[0-2])
3075             subarch="avr32_ap"
3076             cpuflags="-mpart=$cpu"
3077         ;;
3078         ap)
3079             subarch="avr32_ap"
3080             cpuflags="-march=$cpu"
3081         ;;
3082         uc3[ab]*)
3083             subarch="avr32_uc"
3084             cpuflags="-mcpu=$cpu"
3085         ;;
3086         uc)
3087             subarch="avr32_uc"
3088             cpuflags="-march=$cpu"
3089         ;;
3090     esac
3091
3092 elif enabled bfin; then
3093
3094     cpuflags="-mcpu=$cpu"
3095
3096 elif enabled mips; then
3097
3098     cpuflags="-march=$cpu"
3099
3100 elif enabled ppc; then
3101
3102     case $(tolower $cpu) in
3103         601|ppc601|powerpc601)
3104             cpuflags="-mcpu=601"
3105             disable altivec
3106         ;;
3107         603*|ppc603*|powerpc603*)
3108             cpuflags="-mcpu=603"
3109             disable altivec
3110         ;;
3111         604*|ppc604*|powerpc604*)
3112             cpuflags="-mcpu=604"
3113             disable altivec
3114         ;;
3115         g3|75*|ppc75*|powerpc75*)
3116             cpuflags="-mcpu=750"
3117             disable altivec
3118         ;;
3119         g4|745*|ppc745*|powerpc745*)
3120             cpuflags="-mcpu=7450"
3121         ;;
3122         74*|ppc74*|powerpc74*)
3123             cpuflags="-mcpu=7400"
3124         ;;
3125         g5|970|ppc970|powerpc970)
3126             cpuflags="-mcpu=970"
3127         ;;
3128         power[3-7]*)
3129             cpuflags="-mcpu=$cpu"
3130         ;;
3131         cell)
3132             cpuflags="-mcpu=cell"
3133             enable ldbrx
3134         ;;
3135         e500mc)
3136             cpuflags="-mcpu=e500mc"
3137             disable altivec
3138         ;;
3139         e500v2)
3140             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3141             disable altivec
3142         ;;
3143         e500)
3144             cpuflags="-mcpu=8540 -mhard-float"
3145             disable altivec
3146         ;;
3147     esac
3148
3149 elif enabled sparc; then
3150
3151     case $cpu in
3152         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3153             cpuflags="-mcpu=$cpu"
3154             disable vis
3155         ;;
3156         ultrasparc*|niagara[234])
3157             cpuflags="-mcpu=$cpu"
3158         ;;
3159     esac
3160
3161 elif enabled x86; then
3162
3163     case $cpu in
3164         i[345]86|pentium)
3165             cpuflags="-march=$cpu"
3166             disable mmx
3167         ;;
3168         # targets that do NOT support nopl and conditional mov (cmov)
3169         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3170             cpuflags="-march=$cpu"
3171             disable i686
3172         ;;
3173         # targets that do support nopl and conditional mov (cmov)
3174         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3175             cpuflags="-march=$cpu"
3176             enable i686
3177             enable fast_cmov
3178         ;;
3179         # targets that do support conditional mov but on which it's slow
3180         pentium4|pentium4m|prescott|nocona)
3181             cpuflags="-march=$cpu"
3182             enable i686
3183             disable fast_cmov
3184         ;;
3185     esac
3186
3187 fi
3188
3189 if [ "$cpu" != generic ]; then
3190     add_cflags  $cpuflags
3191     add_asflags $cpuflags
3192 fi
3193
3194 # compiler sanity check
3195 check_exec <<EOF
3196 int main(void){ return 0; }
3197 EOF
3198 if test "$?" != 0; then
3199     echo "$cc is unable to create an executable file."
3200     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3201         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3202         echo "Only do this if you know what cross compiling means."
3203     fi
3204     die "C compiler test failed."
3205 fi
3206
3207 add_cppflags -D_ISOC99_SOURCE
3208 check_cflags -std=c99
3209 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3210 #include <stdlib.h>
3211 EOF
3212 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3213 #include <stdlib.h>
3214 EOF
3215
3216 add_host_cppflags -D_ISOC99_SOURCE
3217 check_host_cflags -std=c99
3218 check_host_cflags -Wall
3219 check_host_cflags -O3
3220
3221 check_64bit(){
3222     arch32=$1
3223     arch64=$2
3224     expr=$3
3225     check_code cc "" "int test[2*($expr) - 1]" &&
3226         subarch=$arch64 || subarch=$arch32
3227 }
3228
3229 case "$arch" in
3230     aarch64|alpha|ia64)
3231         spic=$shared
3232     ;;
3233     mips)
3234         check_64bit mips mips64 '_MIPS_SIM > 1'
3235         spic=$shared
3236     ;;
3237     parisc)
3238         check_64bit parisc parisc64 'sizeof(void *) > 4'
3239         spic=$shared
3240     ;;
3241     ppc)
3242         check_64bit ppc ppc64 'sizeof(void *) > 4'
3243         spic=$shared
3244     ;;
3245     s390)
3246         check_64bit s390 s390x 'sizeof(void *) > 4'
3247         spic=$shared
3248     ;;
3249     sparc)
3250         check_64bit sparc sparc64 'sizeof(void *) > 4'
3251         spic=$shared
3252     ;;
3253     x86)
3254         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3255         if test "$subarch" = "x86_64"; then
3256             spic=$shared
3257         fi
3258     ;;
3259 esac
3260
3261 enable $subarch
3262 enabled spic && enable_weak pic
3263
3264 # OS specific
3265 case $target_os in
3266     aix)
3267         SHFLAGS=-shared
3268         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3269         enabled shared && add_ldflags -Wl,-brtl
3270         ;;
3271     haiku)
3272         prefix_default="/boot/common"
3273         network_extralibs="-lnetwork"
3274         host_libs=
3275         ;;
3276     sunos)
3277         SHFLAGS='-shared -Wl,-h,$$(@F)'
3278         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3279         network_extralibs="-lsocket -lnsl"
3280         # When using suncc to build, the Solaris linker will mark
3281         # an executable with each instruction set encountered by
3282         # the Solaris assembler.  As our libraries contain their own
3283         # guards for processor-specific code, instead suppress
3284         # generation of the HWCAPS ELF section on Solaris x86 only.
3285         enabled_all suncc x86 &&
3286             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3287             add_ldflags -Wl,-M,mapfile
3288         nm_default='nm -P -g'
3289         ;;
3290     netbsd)
3291         disable symver
3292         oss_indev_extralibs="-lossaudio"
3293         oss_outdev_extralibs="-lossaudio"
3294         ;;
3295     openbsd|bitrig)
3296         disable symver
3297         SHFLAGS='-shared'
3298         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3299         SLIB_INSTALL_LINKS=
3300         oss_indev_extralibs="-lossaudio"
3301         oss_outdev_extralibs="-lossaudio"
3302         ;;
3303     dragonfly)
3304         disable symver
3305         ;;
3306     freebsd)
3307         ;;
3308     bsd/os)
3309         add_extralibs -lpoll -lgnugetopt
3310         ;;
3311     darwin)
3312         gas="gas-preprocessor.pl $cc"
3313         enabled ppc && add_asflags -force_cpusubtype_ALL
3314         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3315         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3316         add_ldflags -Wl,-dynamic,-search_paths_first
3317         SLIBSUF=".dylib"
3318         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3319         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3320         objformat="macho"
3321         enabled x86_64 && objformat="macho64"
3322         enabled_any pic shared ||
3323             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3324         ;;
3325     mingw32*)
3326         if test $target_os = "mingw32ce"; then
3327             disable network
3328         else
3329             target_os=mingw32
3330         fi
3331         LIBTARGET=i386
3332         if enabled x86_64; then
3333             LIBTARGET="i386:x86-64"
3334         elif enabled arm; then
3335             LIBTARGET=arm-wince
3336         fi
3337         check_ldflags -Wl,--nxcompat
3338         check_ldflags -Wl,--dynamicbase
3339         shlibdir_default="$bindir_default"
3340         SLIBPREF=""
3341         SLIBSUF=".dll"
3342         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3343         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3344         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3345         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3346         SLIB_INSTALL_LINKS=
3347         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3348         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3349         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3350         objformat="win32"
3351         dlltool="${cross_prefix}dlltool"
3352         ranlib=:
3353         enable dos_paths
3354         ;;
3355     win32|win64)
3356         disable symver
3357         if enabled shared; then
3358             # Link to the import library instead of the normal static library
3359             # for shared libs.
3360             LD_LIB='%.lib'
3361             # Cannot build both shared and static libs with MSVC or icl.
3362             disable static
3363         fi
3364         shlibdir_default="$bindir_default"
3365         SLIBPREF=""
3366         SLIBSUF=".dll"
3367         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3368         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3369         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3370         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3371         SLIB_INSTALL_LINKS=
3372         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3373         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3374         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3375         objformat="win32"
3376         ranlib=:
3377         enable dos_paths
3378         ;;
3379     cygwin*)
3380         target_os=cygwin
3381         shlibdir_default="$bindir_default"
3382         SLIBPREF="cyg"
3383         SLIBSUF=".dll"
3384         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3385         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3386         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3387         SLIB_INSTALL_LINKS=
3388         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3389         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3390         objformat="win32"
3391         enable dos_paths
3392         ;;
3393     *-dos|freedos|opendos)
3394         network_extralibs="-lsocket"
3395         objformat="coff"
3396         enable dos_paths
3397         add_cppflags -U__STRICT_ANSI__
3398         ;;
3399     linux)
3400         enable dv1394
3401         ;;
3402     irix*)
3403         target_os=irix
3404         ranlib="echo ignoring ranlib"
3405         ;;
3406     os/2*)
3407         ln_s="cp -f"
3408         objformat="aout"
3409         add_cppflags -D_GNU_SOURCE
3410         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3411         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3412         LIBSUF="_s.a"
3413         SLIBPREF=""
3414         SLIBSUF=".dll"
3415         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3416         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3417         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3418             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3419             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3420             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3421             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3422             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3423         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3424             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3425         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3426         enable dos_paths
3427         ;;
3428     gnu/kfreebsd)
3429         add_cppflags -D_BSD_SOURCE
3430         ;;
3431     gnu)
3432         ;;
3433     qnx)
3434         add_cppflags -D_QNX_SOURCE
3435         network_extralibs="-lsocket"
3436         ;;
3437     symbian)
3438         SLIBSUF=".dll"
3439         enable dos_paths
3440         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3441         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3442         add_ldflags -Wl,--target1-abs,--no-undefined \
3443                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3444                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3445         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3446                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3447                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3448         ;;
3449     osf1)
3450         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3451         ;;
3452     minix)
3453         ;;
3454     plan9)
3455         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3456                      -D_REENTRANT_SOURCE        \
3457                      -D_RESEARCH_SOURCE         \
3458                      -DFD_SETSIZE=96            \
3459                      -DHAVE_SOCK_OPTS
3460         add_compat strtod.o strtod=avpriv_strtod
3461         network_extralibs='-lbsd'
3462         exeobjs=compat/plan9/main.o
3463         disable avserver
3464         cp_f='cp'
3465         ;;
3466     none)
3467         ;;
3468     *)
3469         die "Unknown OS '$target_os'."
3470         ;;
3471 esac
3472
3473 # determine libc flavour
3474
3475 probe_libc(){
3476     pfx=$1
3477     pfx_no_=${pfx%_}
3478     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3479     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3480         eval ${pfx}libc_type=uclibc
3481         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3482     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3483         eval ${pfx}libc_type=glibc
3484         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3485     # MinGW headers can be installed on Cygwin, so check for newlib first.
3486     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3487         eval ${pfx}libc_type=newlib
3488         add_${pfx}cppflags -U__STRICT_ANSI__
3489     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3490     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3491         eval ${pfx}libc_type=mingw64
3492         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3493         eval test \$${pfx_no_}cc_type = "gcc" &&
3494             add_${pfx}cppflags -D__printf__=__gnu_printf__
3495     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3496          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3497         eval ${pfx}libc_type=mingw32
3498         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3499             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3500             die "ERROR: MinGW32 runtime version must be >= 3.15."
3501         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3502         eval test \$${pfx_no_}cc_type = "gcc" &&
3503             add_${pfx}cppflags -D__printf__=__gnu_printf__
3504     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3505         eval ${pfx}libc_type=msvcrt
3506         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3507         # 0x601 by default unless something else is set by the user.
3508         # This can easily lead to us detecting functions only present
3509         # in such new versions and producing binaries requiring windows 7.0.
3510         # Therefore explicitly set the default to XP unless the user has
3511         # set something else on the command line.
3512         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3513             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3514     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3515         eval ${pfx}libc_type=klibc
3516     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3517         eval ${pfx}libc_type=bionic
3518     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3519         eval ${pfx}libc_type=solaris
3520         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3521     fi
3522 }
3523
3524 probe_libc
3525 test -n "$libc_type" && enable libc_$libc_type
3526 probe_libc host_
3527 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3528
3529 case $libc_type in
3530     bionic)
3531         add_compat strtod.o strtod=avpriv_strtod
3532         ;;
3533     msvcrt)
3534         add_compat strtod.o strtod=avpriv_strtod
3535         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3536                                      _snprintf=avpriv_snprintf  \
3537                                      vsnprintf=avpriv_vsnprintf
3538         ;;
3539 esac
3540
3541 # hacks for compiler/libc/os combinations
3542
3543 if enabled_all tms470 libc_glibc; then
3544     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3545     add_cppflags -D__USER_LABEL_PREFIX__=
3546     add_cppflags -D__builtin_memset=memset
3547     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3548     add_cflags   -pds=48    # incompatible redefinition of macro
3549 fi
3550
3551 if enabled_all ccc libc_glibc; then
3552     add_ldflags -Wl,-z,now  # calls to libots crash without this
3553 fi
3554
3555 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3556     add_cppflags '-I\$(SRC_PATH)/compat/float'
3557
3558 esc(){
3559     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3560 }
3561
3562 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3563
3564 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3565
3566 set_default $PATHS_LIST
3567 set_default nm
3568
3569 # we need to build at least one lib type
3570 if ! enabled_any static shared; then
3571     cat <<EOF
3572 At least one library type must be built.
3573 Specify --enable-static to build the static libraries or --enable-shared to
3574 build the shared libraries as well. To only build the shared libraries specify
3575 --disable-static in addition to --enable-shared.
3576 EOF
3577     exit 1;
3578 fi
3579
3580 die_license_disabled() {
3581     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3582 }
3583
3584 die_license_disabled gpl libcdio
3585 die_license_disabled gpl libx264
3586 die_license_disabled gpl libx265
3587 die_license_disabled gpl libxavs
3588 die_license_disabled gpl libxvid
3589 die_license_disabled gpl x11grab
3590
3591 die_license_disabled nonfree libfaac
3592 die_license_disabled nonfree libfdk_aac
3593 die_license_disabled nonfree openssl
3594
3595 die_license_disabled version3 libopencore_amrnb
3596 die_license_disabled version3 libopencore_amrwb
3597 die_license_disabled version3 libvo_aacenc
3598 die_license_disabled version3 libvo_amrwbenc
3599
3600 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3601
3602 disabled optimizations || check_cflags -fomit-frame-pointer
3603
3604 enable_weak_pic() {
3605     disabled pic && return
3606     enable pic
3607     add_cppflags -DPIC
3608     case "$target_os" in
3609     mingw*|cygwin*)
3610         ;;
3611     *)
3612         add_cflags -fPIC
3613         ;;
3614     esac
3615     add_asflags  -fPIC
3616 }
3617
3618 enabled pic && enable_weak_pic
3619
3620 check_cc <<EOF || die "Symbol mangling check failed."
3621 int ff_extern;
3622 EOF
3623 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3624 extern_prefix=${sym%%ff_extern*}
3625
3626 check_cc <<EOF && enable_weak inline_asm
3627 void foo(void) { __asm__ volatile ("" ::); }
3628 EOF
3629
3630 _restrict=
3631 for restrict_keyword in restrict __restrict__ __restrict; do
3632     check_cc <<EOF && _restrict=$restrict_keyword && break
3633 void foo(char * $restrict_keyword p);
3634 EOF
3635 done
3636
3637 check_cc <<EOF && enable pragma_deprecated
3638 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3639 EOF
3640
3641 check_cc <<EOF && enable attribute_packed
3642 struct { int x; } __attribute__((packed)) x;
3643 EOF
3644
3645 check_cc <<EOF && enable attribute_may_alias
3646 union { int x; } __attribute__((may_alias)) x;
3647 EOF
3648
3649 check_cc <<EOF || die "endian test failed"
3650 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3651 EOF
3652 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3653
3654 check_inline_asm inline_asm_labels '"1:\n"'
3655
3656 if enabled aarch64; then
3657     # internal assembler in clang 3.3 does not support this instruction
3658     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3659     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3660
3661     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3662
3663 elif enabled alpha; then
3664
3665     check_cflags -mieee
3666
3667 elif enabled arm; then
3668
3669     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3670     enabled thumb && check_cflags -mthumb || check_cflags -marm
3671     nogas=die
3672
3673     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3674         enable vfp_args
3675     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3676         case "${cross_prefix:-$cc}" in
3677             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3678             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3679 __asm__ (".eabi_attribute 28, 1");
3680 int main(void) { return 0; }
3681 EOF
3682         esac
3683         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3684     fi
3685
3686     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3687     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3688     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3689     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3690     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3691     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3692
3693     [ $target_os = linux ] ||
3694         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3695             $ARCH_EXT_LIST_ARM
3696
3697     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3698
3699     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3700
3701 elif enabled mips; then
3702
3703     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3704
3705 elif enabled parisc; then
3706
3707     if enabled gcc; then
3708         case $($cc -dumpversion) in
3709             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3710         esac
3711     fi
3712
3713 elif enabled ppc; then
3714
3715     enable local_aligned_8 local_aligned_16
3716
3717     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3718     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3719     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3720     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3721
3722     # AltiVec flags: The FSF version of GCC differs from the Apple version
3723     if enabled altivec; then
3724         nogas=warn
3725         check_cflags -maltivec -mabi=altivec &&
3726         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3727         check_cflags -faltivec
3728
3729         # check if our compiler supports Motorola AltiVec C API
3730         check_cc <<EOF || disable altivec
3731 $inc_altivec_h
3732 int main(void) {
3733     vector signed int v1 = (vector signed int) { 0 };
3734     vector signed int v2 = (vector signed int) { 1 };
3735     v1 = vec_add(v1, v2);
3736     return 0;
3737 }
3738 EOF
3739
3740         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3741     fi
3742
3743 elif enabled sparc; then
3744
3745     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3746
3747 elif enabled x86; then
3748
3749     check_builtin rdtsc    intrin.h   "__rdtsc()"
3750     check_builtin mm_empty mmintrin.h "_mm_empty()"
3751
3752     enable local_aligned_8 local_aligned_16
3753
3754     # check whether EBP is available on x86
3755     # As 'i' is stored on the stack, this program will crash
3756     # if the base pointer is used to access it because the
3757     # base pointer is cleared in the inline assembly code.
3758     check_exec_crash <<EOF && enable ebp_available
3759 volatile int i=0;
3760 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3761 return i;
3762 EOF
3763
3764     # check whether EBX is available on x86
3765     check_inline_asm ebx_available '""::"b"(0)' &&
3766         check_inline_asm ebx_available '"":::"%ebx"'
3767
3768     # check whether xmm clobbers are supported
3769     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3770
3771     # check whether binutils is new enough to compile SSSE3/MMXEXT
3772     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3773     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3774
3775     if ! disabled_any asm mmx yasm; then
3776         if check_cmd $yasmexe --version; then
3777             enabled x86_64 && yasm_extra="-m amd64"
3778             yasm_debug="-g dwarf2"
3779         elif check_cmd nasm -v; then
3780             yasmexe=nasm
3781             yasm_debug="-g -F dwarf"
3782             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3783         fi
3784
3785         YASMFLAGS="-f $objformat $yasm_extra"
3786         enabled pic               && append YASMFLAGS "-DPIC"
3787         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3788         case "$objformat" in
3789             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3790         esac
3791
3792         check_yasm "movbe ecx, [5]" && enable yasm ||
3793             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3794         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3795         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3796         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3797         check_yasm "CPU amdnop" || disable cpunop
3798     fi
3799
3800     case "$cpu" in
3801         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3802             disable fast_clz
3803         ;;
3804     esac
3805
3806 fi
3807
3808 if enabled asm; then
3809     as=${gas:=$as}
3810     check_as <<EOF && enable gnu_as || \
3811         $nogas "GNU assembler not found, install gas-preprocessor"
3812 .macro m n
3813 \n: .int 0
3814 .endm
3815 m x
3816 EOF
3817 fi
3818
3819 check_ldflags -Wl,--as-needed
3820
3821 if check_func dlopen; then
3822     ldl=
3823 elif check_func dlopen -ldl; then
3824     ldl=-ldl
3825 fi
3826
3827 if ! disabled network; then
3828     check_type "sys/types.h sys/socket.h" socklen_t
3829     check_type netdb.h "struct addrinfo"
3830     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3831     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3832     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3833     check_type netinet/in.h "struct sockaddr_in6"
3834     check_type poll.h "struct pollfd"
3835     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3836     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3837     check_type netinet/sctp.h "struct sctp_event_subscribe"
3838     check_func getaddrinfo $network_extralibs
3839     check_func getservbyport $network_extralibs
3840     check_func inet_aton $network_extralibs
3841     # Prefer arpa/inet.h over winsock2
3842     if check_header arpa/inet.h ; then
3843         check_func closesocket
3844     elif check_header winsock2.h ; then
3845         check_func_headers winsock2.h closesocket -lws2 &&
3846             network_extralibs="-lws2" ||
3847         { check_func_headers winsock2.h closesocket -lws2_32 &&
3848             network_extralibs="-lws2_32"; } || disable winsock2_h network
3849         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3850         check_type ws2tcpip.h socklen_t
3851         check_type ws2tcpip.h "struct addrinfo"
3852         check_type ws2tcpip.h "struct group_source_req"
3853         check_type ws2tcpip.h "struct ip_mreq_source"
3854         check_type ws2tcpip.h "struct ipv6_mreq"
3855         check_type winsock2.h "struct pollfd"
3856         check_type ws2tcpip.h "struct sockaddr_in6"
3857         check_type ws2tcpip.h "struct sockaddr_storage"
3858         check_struct winsock2.h "struct sockaddr" sa_len
3859     else
3860         disable network
3861     fi
3862 fi
3863
3864 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3865 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3866
3867 check_func  fcntl
3868 check_func  fork
3869 check_func_headers stdlib.h getenv
3870 check_func  gethrtime
3871 check_func  getopt
3872 check_func  getrusage
3873 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3874 check_func  gettimeofday
3875 check_func  isatty
3876 check_func  localtime_r
3877 check_func  mach_absolute_time
3878 check_func  ${malloc_prefix}memalign            && enable memalign
3879 check_func  mkstemp
3880 check_func  mmap
3881 check_func  mprotect
3882 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3883 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3884 check_func  setrlimit
3885 check_func  strerror_r
3886 check_func  strptime
3887 check_func  sched_getaffinity
3888 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3889 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3890 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3891 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3892 check_func  sysconf
3893 check_func  sysctl
3894 check_func  usleep
3895 check_func_headers io.h setmode
3896 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3897 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3898 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3899 check_func_headers windows.h GetProcessAffinityMask
3900 check_func_headers windows.h GetProcessTimes
3901 check_func_headers windows.h GetSystemTimeAsFileTime
3902 check_func_headers windows.h MapViewOfFile
3903 check_func_headers windows.h SetConsoleTextAttribute
3904 check_func_headers windows.h Sleep
3905 check_func_headers windows.h VirtualAlloc
3906
3907 check_header direct.h
3908 check_header dlfcn.h
3909 check_header dxva.h
3910 check_header dxva2api.h
3911 check_header io.h
3912 check_header mach/mach_time.h
3913 check_header malloc.h
3914 check_header poll.h
3915 check_header sys/mman.h
3916 check_header sys/param.h
3917 check_header sys/resource.h
3918 check_header sys/select.h
3919 check_header sys/time.h
3920 check_header sys/un.h
3921 check_header unistd.h
3922 check_header vdpau/vdpau.h
3923 check_header vdpau/vdpau_x11.h
3924 check_header VideoDecodeAcceleration/VDADecoder.h
3925 check_header windows.h
3926 check_header X11/extensions/XvMClib.h
3927
3928 if ! disabled w32threads && ! enabled pthreads; then
3929     check_func_headers "windows.h process.h" _beginthreadex &&
3930         enable w32threads || disable w32threads
3931 fi
3932
3933 # check for some common methods of building with pthread support
3934 # do this before the optional library checks as some of them require pthreads
3935 if ! disabled pthreads && ! enabled w32threads; then
3936     enable pthreads
3937     if check_func pthread_join -pthread; then
3938         add_cflags -pthread
3939         add_extralibs -pthread
3940     elif check_func pthread_join -pthreads; then
3941         add_cflags -pthreads
3942         add_extralibs -pthreads
3943     elif check_func pthread_join -lpthreadGC2; then
3944         add_extralibs -lpthreadGC2
3945     elif check_lib pthread.h pthread_join -lpthread; then
3946         :
3947     elif ! check_func pthread_join; then
3948         disable pthreads
3949     fi
3950 fi
3951
3952 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3953 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3954
3955 check_lib math.h sin -lm && LIBM="-lm"
3956 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3957
3958 atan2f_args=2
3959 ldexpf_args=2
3960 powf_args=2
3961
3962 for func in $MATH_FUNCS; do
3963     eval check_mathfunc $func \${${func}_args:-1}
3964 done
3965
3966 # these are off by default, so fail if requested and not available
3967 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
3968                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
3969                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
3970 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3971 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3972 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3973 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3974 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
3975 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3976                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3977                                done || die "ERROR: libgsm not found"; }
3978 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3979 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3980 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3981 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3982 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3983 enabled libopenjpeg       && require_pkg_config libopenjpeg1 openjpeg.h opj_version
3984 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3985 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3986 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3987 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3988 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3989 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3990 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3991 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3992 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3993 enabled libvpx            && {
3994     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3995                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3996     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3997                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3998     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3999     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4000 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4001 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4002 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4003                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4004                                die "ERROR: libx264 version must be >= 0.118."; }
4005 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4006                              { check_cpp_condition x265.h "X265_BUILD >= 9" ||
4007                                die "ERROR: libx265 version must be >= 9."; }
4008 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4009 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4010 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4011                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4012                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4013                                die "ERROR: openssl not found"; }
4014
4015 if enabled gnutls; then
4016     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4017     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4018 fi
4019
4020 # libdc1394 check
4021 if enabled libdc1394; then
4022     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4023         enable libdc1394_2; } ||
4024     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4025         enable libdc1394_1; } ||
4026     die "ERROR: No version of libdc1394 found "
4027 fi
4028
4029 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4030     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4031     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4032     enable sdl
4033 fi
4034
4035 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4036 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4037
4038 check_header linux/fb.h
4039 check_header linux/videodev2.h
4040 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4041
4042 check_header sys/videoio.h
4043
4044 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4045 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4046 # w32api 3.12 had it defined wrong
4047 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4048
4049 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4050 { check_header dev/bktr/ioctl_meteor.h &&
4051   check_header dev/bktr/ioctl_bt848.h; } ||
4052 { check_header machine/ioctl_meteor.h &&
4053   check_header machine/ioctl_bt848.h; } ||
4054 { check_header dev/video/meteor/ioctl_meteor.h &&
4055   check_header dev/video/bktr/ioctl_bt848.h; } ||
4056 check_header dev/ic/bt8xx.h
4057
4058 check_header sndio.h
4059 check_header sys/soundcard.h
4060 check_header soundcard.h
4061
4062 enabled_any alsa_indev alsa_outdev &&
4063     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4064
4065 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4066     check_func jack_port_get_latency_range -ljack
4067
4068 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4069
4070 if enabled libcdio; then
4071     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4072     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4073 fi
4074
4075 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4076
4077 enabled x11grab                                           &&
4078 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4079 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4080 { enabled xlib || die "ERROR: Xlib not found"; }
4081
4082 enabled vdpau &&
4083     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4084     disable vdpau
4085
4086 enabled vdpau && enabled xlib &&
4087     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4088     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4089     enable vdpau_x11
4090
4091 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4092
4093 # add some useful compiler flags if supported
4094 check_cflags -Wdeclaration-after-statement
4095 check_cflags -Wall
4096 check_cflags -Wdisabled-optimization
4097 check_cflags -Wpointer-arith
4098 check_cflags -Wredundant-decls
4099 check_cflags -Wcast-qual
4100 check_cflags -Wwrite-strings
4101 check_cflags -Wtype-limits
4102 check_cflags -Wundef
4103 check_cflags -Wmissing-prototypes
4104 check_cflags -Wstrict-prototypes
4105 enabled extra_warnings && check_cflags -Winline
4106
4107 check_disable_warning(){
4108     warning_flag=-W${1#-Wno-}
4109     test_cflags $warning_flag && add_cflags $1
4110 }
4111
4112 check_disable_warning -Wno-parentheses
4113 check_disable_warning -Wno-switch
4114 check_disable_warning -Wno-format-zero-length
4115 check_disable_warning -Wno-pointer-sign
4116
4117 # add some linker flags
4118 check_ldflags -Wl,--warn-common
4119 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4120 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4121
4122 # add some strip flags
4123 # -wN '..@*' is more selective than -x, but not available everywhere.
4124 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4125
4126 enabled neon_clobber_test &&
4127     check_ldflags -Wl,--wrap,avcodec_open2              \
4128                   -Wl,--wrap,avcodec_decode_audio4      \
4129                   -Wl,--wrap,avcodec_decode_video2      \
4130                   -Wl,--wrap,avcodec_decode_subtitle2   \
4131                   -Wl,--wrap,avcodec_encode_audio2      \
4132                   -Wl,--wrap,avcodec_encode_video2      \
4133                   -Wl,--wrap,avcodec_encode_subtitle    \
4134                   -Wl,--wrap,avresample_convert ||
4135     disable neon_clobber_test
4136
4137 enabled xmm_clobber_test &&
4138     check_ldflags -Wl,--wrap,avcodec_open2              \
4139                   -Wl,--wrap,avcodec_decode_audio4      \
4140                   -Wl,--wrap,avcodec_decode_video2      \
4141                   -Wl,--wrap,avcodec_decode_subtitle2   \
4142                   -Wl,--wrap,avcodec_encode_audio2      \
4143                   -Wl,--wrap,avcodec_encode_video2      \
4144                   -Wl,--wrap,avcodec_encode_subtitle    \
4145                   -Wl,--wrap,avresample_convert         \
4146                   -Wl,--wrap,sws_scale ||
4147     disable xmm_clobber_test
4148
4149 echo "X{};" > $TMPV
4150 if test_ldflags -Wl,--version-script,$TMPV; then
4151     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4152     check_cc <<EOF && enable symver_asm_label
4153 void ff_foo(void) __asm__ ("av_foo@VERSION");
4154 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4155 EOF
4156     check_cc <<EOF && enable symver_gnu_asm
4157 __asm__(".symver ff_foo,av_foo@VERSION");
4158 void ff_foo(void) {}
4159 EOF
4160 fi
4161
4162 if [ -z "$optflags" ]; then
4163     if enabled small; then
4164         optflags=$cflags_size
4165     elif enabled optimizations; then
4166         optflags=$cflags_speed
4167     else
4168         optflags=$cflags_noopt
4169     fi
4170 fi
4171
4172 check_optflags(){
4173     check_cflags "$@"
4174     enabled lto && check_ldflags "$@"
4175 }
4176
4177
4178 if enabled lto; then
4179     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4180     check_cflags  -flto
4181     check_ldflags -flto $cpuflags
4182 fi
4183
4184 check_optflags $optflags
4185 check_optflags -fno-math-errno
4186 check_optflags -fno-signed-zeros
4187
4188 if enabled icc; then
4189     # Just warnings, no remarks
4190     check_cflags -w1
4191     # -wd: Disable following warnings
4192     # 144, 167, 556: -Wno-pointer-sign
4193     # 1292: attribute "foo" ignored
4194     # 1419: external declaration in primary source file
4195     # 10006: ignoring unknown option -fno-signed-zeros
4196     # 10148: ignoring unknown option -Wno-parentheses
4197     # 10156: ignoring option '-W'; no argument required
4198     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4199     # 11030: Warning unknown option --as-needed
4200     # 10156: ignoring option '-export'; no argument required
4201     check_ldflags -wd10156,11030
4202     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4203     enable ebp_available
4204     if enabled x86_32; then
4205         icc_version=$($cc -dumpversion)
4206         test ${icc_version%%.*} -ge 11 &&
4207             check_cflags -falign-stack=maintain-16-byte ||
4208             disable aligned_stack
4209     fi
4210 elif enabled ccc; then
4211     # disable some annoying warnings
4212     add_cflags -msg_disable bitnotint
4213     add_cflags -msg_disable mixfuncvoid
4214     add_cflags -msg_disable nonstandcast
4215     add_cflags -msg_disable unsupieee
4216 elif enabled gcc; then
4217     check_optflags -fno-tree-vectorize
4218     check_cflags -Werror=implicit-function-declaration
4219     check_cflags -Werror=missing-prototypes
4220     check_cflags -Werror=return-type
4221     check_cflags -Werror=declaration-after-statement
4222     check_cflags -Werror=vla
4223     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4224 elif enabled llvm_gcc; then
4225     check_cflags -mllvm -stack-alignment=16
4226 elif enabled clang; then
4227     check_cflags -mllvm -stack-alignment=16
4228     check_cflags -Qunused-arguments
4229     check_cflags -Werror=implicit-function-declaration
4230     check_cflags -Werror=missing-prototypes
4231     check_cflags -Werror=return-type
4232 elif enabled cparser; then
4233     add_cflags -Wno-missing-variable-declarations
4234     add_cflags -Wno-empty-statement
4235 elif enabled armcc; then
4236     # 2523: use of inline assembler is deprecated
4237     add_cflags -W${armcc_opt},--diag_suppress=2523
4238     add_cflags -W${armcc_opt},--diag_suppress=1207
4239     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4240     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4241     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4242     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4243 elif enabled tms470; then
4244     add_cflags -pds=824 -pds=837
4245     disable inline_asm
4246 elif enabled pathscale; then
4247     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4248 elif enabled_any msvc icl; then
4249     enabled x86_32 && disable aligned_stack
4250     enabled_all x86_32 debug && add_cflags -Oy-
4251     enabled debug && add_ldflags -debug
4252     enable pragma_deprecated
4253     if enabled icl; then
4254         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4255         # (correctly) on icl 13.x.
4256         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4257             add_cflags -Qansi-alias
4258         # icl will pass the inline asm tests but inline asm is currently
4259         # not supported (build will fail)
4260         disable inline_asm
4261     fi
4262 fi
4263
4264 case $as_type in
4265     clang)
4266         add_asflags -Qunused-arguments
4267     ;;
4268 esac
4269
4270 case $ld_type in
4271     clang)
4272         check_ldflags -Qunused-arguments
4273     ;;
4274 esac
4275
4276 case $target_os in
4277     osf1)
4278         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4279     ;;
4280     plan9)
4281         add_cppflags -Dmain=plan9_main
4282     ;;
4283 esac
4284
4285 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4286
4287 check_deps $CONFIG_LIST       \
4288            $CONFIG_EXTRA      \
4289            $HAVE_LIST         \
4290            $ALL_COMPONENTS    \
4291
4292 ! enabled_any memalign posix_memalign aligned_malloc &&
4293     enabled_any $need_memalign && enable memalign_hack
4294
4295 for thread in $THREADS_LIST; do
4296     if enabled $thread; then
4297         test -n "$thread_type" &&
4298             die "ERROR: Only one thread type must be selected." ||
4299             thread_type="$thread"
4300     fi
4301 done
4302
4303 echo "install prefix            $prefix"
4304 echo "source path               $source_path"
4305 echo "C compiler                $cc"
4306 echo "C library                 $libc_type"
4307 if test "$host_cc" != "$cc"; then
4308     echo "host C compiler           $host_cc"
4309     echo "host C library            $host_libc_type"
4310 fi
4311 echo "ARCH                      $arch ($cpu)"
4312 if test "$build_suffix" != ""; then
4313     echo "build suffix              $build_suffix"
4314 fi
4315 if test "$extra_version" != ""; then
4316     echo "version string suffix     $extra_version"
4317 fi
4318 echo "big-endian                ${bigendian-no}"
4319 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4320 if enabled x86; then
4321     echo "${yasmexe}                      ${yasm-no}"
4322     echo "MMX enabled               ${mmx-no}"
4323     echo "MMXEXT enabled            ${mmxext-no}"
4324     echo "3DNow! enabled            ${amd3dnow-no}"
4325     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4326     echo "SSE enabled               ${sse-no}"
4327     echo "SSSE3 enabled             ${ssse3-no}"
4328     echo "AVX enabled               ${avx-no}"
4329     echo "XOP enabled               ${xop-no}"
4330     echo "FMA3 enabled              ${fma3-no}"
4331     echo "FMA4 enabled              ${fma4-no}"
4332     echo "i686 features enabled     ${i686-no}"
4333     echo "CMOV is fast              ${fast_cmov-no}"
4334     echo "EBX available             ${ebx_available-no}"
4335     echo "EBP available             ${ebp_available-no}"
4336 fi
4337 if enabled aarch64; then
4338     echo "NEON enabled              ${neon-no}"
4339     echo "VFP enabled               ${vfp-no}"
4340 fi
4341 if enabled arm; then
4342     echo "ARMv5TE enabled           ${armv5te-no}"
4343     echo "ARMv6 enabled             ${armv6-no}"
4344     echo "ARMv6T2 enabled           ${armv6t2-no}"
4345     echo "VFP enabled               ${vfp-no}"
4346     echo "NEON enabled              ${neon-no}"
4347 fi
4348 if enabled ppc; then
4349     echo "AltiVec enabled           ${altivec-no}"
4350     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4351     echo "dcbzl available           ${dcbzl-no}"
4352 fi
4353 if enabled sparc; then
4354     echo "VIS enabled               ${vis-no}"
4355 fi
4356 echo "debug symbols             ${debug-no}"
4357 echo "optimize for size         ${small-no}"
4358 echo "optimizations             ${optimizations-no}"
4359 echo "static                    ${static-no}"
4360 echo "shared                    ${shared-no}"
4361 echo "new filter support        ${avfilter-no}"
4362 echo "network support           ${network-no}"
4363 echo "threading support         ${thread_type-no}"
4364 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4365 echo "SDL support               ${sdl-no}"
4366 test -n "$random_seed" &&
4367     echo "random seed               ${random_seed}"
4368 echo
4369
4370 echo "External libraries:"
4371 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4372 echo
4373
4374 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4375     echo "Enabled ${type}s:"
4376     eval list=\$$(toupper $type)_LIST
4377     print_enabled '_*' $list | print_3_columns
4378     echo
4379 done
4380
4381 license="LGPL version 2.1 or later"
4382 if enabled nonfree; then
4383     license="nonfree and unredistributable"
4384 elif enabled gplv3; then
4385     license="GPL version 3 or later"
4386 elif enabled lgplv3; then
4387     license="LGPL version 3 or later"
4388 elif enabled gpl; then
4389     license="GPL version 2 or later"
4390 fi
4391
4392 echo "License: $license"
4393
4394 echo "Creating config.mak and config.h..."
4395
4396 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4397
4398 config_files="$TMPH config.mak"
4399
4400 cat > config.mak <<EOF
4401 # Automatically generated by configure - do not modify!
4402 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4403 prefix=$prefix
4404 LIBDIR=\$(DESTDIR)$libdir
4405 SHLIBDIR=\$(DESTDIR)$shlibdir
4406 INCDIR=\$(DESTDIR)$incdir
4407 BINDIR=\$(DESTDIR)$bindir
4408 DATADIR=\$(DESTDIR)$datadir
4409 DOCDIR=\$(DESTDIR)$docdir
4410 MANDIR=\$(DESTDIR)$mandir
4411 SRC_PATH=$source_path
4412 CC_IDENT=$cc_ident
4413 ARCH=$arch
4414 CC=$cc
4415 AS=$as
4416 LD=$ld
4417 DEPCC=$dep_cc
4418 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4419 DEPAS=$as
4420 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4421 YASM=$yasmexe
4422 DEPYASM=$yasmexe
4423 AR=$ar
4424 ARFLAGS=$arflags
4425 AR_O=$ar_o
4426 RANLIB=$ranlib
4427 STRIP=$strip
4428 LN_S=$ln_s
4429 CPPFLAGS=$CPPFLAGS
4430 CFLAGS=$CFLAGS
4431 ASFLAGS=$ASFLAGS
4432 AS_C=$AS_C
4433 AS_O=$AS_O
4434 CC_C=$CC_C
4435 CC_E=$CC_E
4436 CC_O=$CC_O
4437 LD_O=$LD_O
4438 LD_LIB=$LD_LIB
4439 LD_PATH=$LD_PATH
4440 DLLTOOL=$dlltool
4441 LDFLAGS=$LDFLAGS
4442 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4443 STRIPFLAGS=$STRIPFLAGS
4444 YASMFLAGS=$YASMFLAGS
4445 BUILDSUF=$build_suffix
4446 FULLNAME=$FULLNAME
4447 LIBPREF=$LIBPREF
4448 LIBSUF=$LIBSUF
4449 LIBNAME=$LIBNAME
4450 SLIBPREF=$SLIBPREF
4451 SLIBSUF=$SLIBSUF
4452 EXESUF=$EXESUF
4453 EXTRA_VERSION=$extra_version
4454 CCDEP=$CCDEP
4455 CCDEP_FLAGS=$CCDEP_FLAGS
4456 ASDEP=$ASDEP
4457 ASDEP_FLAGS=$ASDEP_FLAGS
4458 CC_DEPFLAGS=$CC_DEPFLAGS
4459 AS_DEPFLAGS=$AS_DEPFLAGS
4460 HOSTCC=$host_cc
4461 HOSTLD=$host_ld
4462 HOSTCFLAGS=$host_cflags
4463 HOSTCPPFLAGS=$host_cppflags
4464 HOSTEXESUF=$HOSTEXESUF
4465 HOSTLDFLAGS=$host_ldflags
4466 HOSTLIBS=$host_libs
4467 DEPHOSTCC=$host_cc
4468 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4469 HOSTCCDEP=$HOSTCCDEP
4470 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4471 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4472 HOSTCC_C=$HOSTCC_C
4473 HOSTCC_O=$HOSTCC_O
4474 HOSTLD_O=$HOSTLD_O
4475 TARGET_EXEC=$target_exec $target_exec_args
4476 TARGET_PATH=$target_path
4477 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4478 CFLAGS-avplay=$sdl_cflags
4479 ZLIB=$($ldflags_filter -lz)
4480 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4481 EXTRALIBS=$extralibs
4482 COMPAT_OBJS=$compat_objs
4483 EXEOBJS=$exeobjs
4484 INSTALL=install
4485 LIBTARGET=${LIBTARGET}
4486 SLIBNAME=${SLIBNAME}
4487 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4488 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4489 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4490 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4491 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4492 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4493 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4494 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4495 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4496 EOF
4497
4498 get_version(){
4499     lcname=lib${1}
4500     name=$(toupper $lcname)
4501     file=$source_path/$lcname/version.h
4502     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4503     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4504     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4505     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4506     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4507 }
4508
4509 map 'get_version $v' $LIBRARY_LIST
4510
4511 print_program_libs(){
4512     eval "program_libs=\$${1}_libs"
4513     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4514 }
4515
4516 map 'print_program_libs $v' $PROGRAM_LIST
4517
4518 cat > $TMPH <<EOF
4519 /* Automatically generated by configure - do not modify! */
4520 #ifndef LIBAV_CONFIG_H
4521 #define LIBAV_CONFIG_H
4522 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4523 #define LIBAV_LICENSE "$(c_escape $license)"
4524 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4525 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4526 #define restrict $_restrict
4527 #define EXTERN_PREFIX "${extern_prefix}"
4528 #define EXTERN_ASM ${extern_prefix}
4529 #define SLIBSUF "$SLIBSUF"
4530 EOF
4531
4532 test -n "$malloc_prefix" &&
4533     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4534
4535 if enabled yasm; then
4536     append config_files $TMPASM
4537     printf '' >$TMPASM
4538 fi
4539
4540 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4541
4542 print_config ARCH_   "$config_files" $ARCH_LIST
4543 print_config HAVE_   "$config_files" $HAVE_LIST
4544 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4545                                      $CONFIG_EXTRA      \
4546                                      $ALL_COMPONENTS    \
4547
4548 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4549
4550 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4551 cp_if_changed $TMPH config.h
4552 touch .config
4553
4554 enabled yasm && cp_if_changed $TMPASM config.asm
4555
4556 cat > $TMPH <<EOF
4557 /* Generated by ffconf */
4558 #ifndef AVUTIL_AVCONFIG_H
4559 #define AVUTIL_AVCONFIG_H
4560 EOF
4561
4562 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4563
4564 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4565
4566 cp_if_changed $TMPH libavutil/avconfig.h
4567
4568 test -n "$WARNINGS" && printf "\n$WARNINGS"
4569
4570 # build pkg-config files
4571
4572 pkgconfig_generate(){
4573     name=$1
4574     shortname=${name#lib}${build_suffix}
4575     comment=$2
4576     version=$3
4577     libs=$4
4578     requires=$5
4579     enabled ${name#lib} || return 0
4580     mkdir -p $name
4581     cat <<EOF > $name/$name.pc
4582 prefix=$prefix
4583 exec_prefix=\${prefix}
4584 libdir=$libdir
4585 includedir=$incdir
4586
4587 Name: $name
4588 Description: $comment
4589 Version: $version
4590 Requires: $(enabled shared || echo $requires)
4591 Requires.private: $(enabled shared && echo $requires)
4592 Conflicts:
4593 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4594 Libs.private: $(enabled shared && echo $libs)
4595 Cflags: -I\${includedir}
4596 EOF
4597     cat <<EOF > $name/$name-uninstalled.pc
4598 prefix=
4599 exec_prefix=
4600 libdir=\${pcfiledir}
4601 includedir=${source_path}
4602
4603 Name: $name
4604 Description: $comment
4605 Version: $version
4606 Requires: $requires
4607 Conflicts:
4608 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4609 Cflags: -I\${includedir}
4610 EOF
4611 }
4612
4613 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4614 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4615 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4616 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4617
4618 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4619 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4620 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4621 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4622 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4623 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4624 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"