build: Drop stray LPC dependency on dsputil
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105
106 Program options:
107   --disable-programs       do not build command line programs
108   --disable-avconv         disable avconv build
109   --disable-avplay         disable avplay build
110   --disable-avprobe        disable avprobe build
111   --disable-avserver       disable avserver build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-avdevice       disable libavdevice build
116   --disable-avcodec        disable libavcodec build
117   --disable-avformat       disable libavformat build
118   --disable-avutil         disable libavutil build
119   --disable-swscale        disable libswscale build
120   --disable-avfilter       disable video filter support [no]
121   --disable-avresample     disable libavresample build [no]
122   --disable-pthreads       disable pthreads [auto]
123   --disable-w32threads     disable Win32 threads [auto]
124   --disable-network        disable network support [no]
125   --disable-dct            disable DCT code
126   --disable-error-resilience disable error resilience code
127   --disable-lsp            disable LSP code
128   --disable-lzo            disable LZO decoder code
129   --disable-mdct           disable MDCT code
130   --disable-rdft           disable RDFT code
131   --disable-fft            disable FFT code
132
133 Hardware accelerators:
134   --enable-dxva2           enable DXVA2 code
135   --enable-vaapi           enable VAAPI code
136   --enable-vda             enable VDA code
137   --enable-vdpau           enable VDPAU code
138
139 Individual component options:
140   --disable-everything     disable all components listed below
141   --disable-encoder=NAME   disable encoder NAME
142   --enable-encoder=NAME    enable encoder NAME
143   --disable-encoders       disable all encoders
144   --disable-decoder=NAME   disable decoder NAME
145   --enable-decoder=NAME    enable decoder NAME
146   --disable-decoders       disable all decoders
147   --disable-hwaccel=NAME   disable hwaccel NAME
148   --enable-hwaccel=NAME    enable hwaccel NAME
149   --disable-hwaccels       disable all hwaccels
150   --disable-muxer=NAME     disable muxer NAME
151   --enable-muxer=NAME      enable muxer NAME
152   --disable-muxers         disable all muxers
153   --disable-demuxer=NAME   disable demuxer NAME
154   --enable-demuxer=NAME    enable demuxer NAME
155   --disable-demuxers       disable all demuxers
156   --enable-parser=NAME     enable parser NAME
157   --disable-parser=NAME    disable parser NAME
158   --disable-parsers        disable all parsers
159   --enable-bsf=NAME        enable bitstream filter NAME
160   --disable-bsf=NAME       disable bitstream filter NAME
161   --disable-bsfs           disable all bitstream filters
162   --enable-protocol=NAME   enable protocol NAME
163   --disable-protocol=NAME  disable protocol NAME
164   --disable-protocols      disable all protocols
165   --enable-indev=NAME      enable input device NAME
166   --disable-indev=NAME     disable input device NAME
167   --disable-indevs         disable input devices
168   --enable-outdev=NAME     enable output device NAME
169   --disable-outdev=NAME    disable output device NAME
170   --disable-outdevs        disable output devices
171   --disable-devices        disable all devices
172   --enable-filter=NAME     enable filter NAME
173   --disable-filter=NAME    disable filter NAME
174   --disable-filters        disable all filters
175
176 External library support:
177   --enable-avisynth        enable reading of AviSynth script files [no]
178   --enable-bzlib           enable bzlib [autodetect]
179   --enable-frei0r          enable frei0r video filtering
180   --enable-gnutls          enable gnutls [no]
181   --enable-libcdio         enable audio CD grabbing with libcdio
182   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
183                            and libraw1394 [no]
184   --enable-libfaac         enable AAC encoding via libfaac [no]
185   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
186   --enable-libfreetype     enable libfreetype [no]
187   --enable-libgsm          enable GSM de/encoding via libgsm [no]
188   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
189   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
190   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
191   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
192   --enable-libopencv       enable video filtering via libopencv [no]
193   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
194   --enable-libopus         enable Opus decoding via libopus [no]
195   --enable-libpulse        enable Pulseaudio input via libpulse [no]
196   --enable-librtmp         enable RTMP[E] support via librtmp [no]
197   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
198   --enable-libspeex        enable Speex de/encoding via libspeex [no]
199   --enable-libtheora       enable Theora encoding via libtheora [no]
200   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
201   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
202   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
203   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
204   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
205   --enable-libwebp         enable WebP encoding via libwebp [no]
206   --enable-libx264         enable H.264 encoding via x264 [no]
207   --enable-libx265         enable HEVC encoding via x265 [no]
208   --enable-libxavs         enable AVS encoding via xavs [no]
209   --enable-libxvid         enable Xvid encoding via xvidcore,
210                            native MPEG-4/Xvid encoder exists [no]
211   --enable-openssl         enable openssl [no]
212   --enable-x11grab         enable X11 grabbing [no]
213   --enable-zlib            enable zlib [autodetect]
214
215 Toolchain options:
216   --arch=ARCH              select architecture [$arch]
217   --cpu=CPU                select the minimum required CPU (affects
218                            instruction selection, may crash on older CPUs)
219   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
220   --enable-cross-compile   assume a cross-compiler is used
221   --sysroot=PATH           root of cross-build tree
222   --sysinclude=PATH        location of cross-build system headers
223   --target-os=OS           compiler targets OS [$target_os]
224   --target-exec=CMD        command to run executables on target
225   --target-path=DIR        path to view of build directory on target
226   --target-samples=DIR     path to samples directory on target
227   --toolchain=NAME         set tool defaults according to NAME
228   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
229   --nm=NM                  use nm tool
230   --ar=AR                  use archive tool AR [$ar_default]
231   --as=AS                  use assembler AS [$as_default]
232   --cc=CC                  use C compiler CC [$cc_default]
233   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
234   --ld=LD                  use linker LD
235   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
236   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
237   --host-cc=HOSTCC         use host C compiler HOSTCC
238   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
239   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
240   --host-ld=HOSTLD         use host linker HOSTLD
241   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
242   --host-libs=HLIBS        use libs HLIBS when linking for host
243   --host-os=OS             compiler host OS [$target_os]
244   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
245   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
246   --extra-libs=ELIBS       add ELIBS [$ELIBS]
247   --extra-version=STRING   version string suffix []
248   --optflags=OPTFLAGS      override optimization-related compiler flags
249   --build-suffix=SUFFIX    library name suffix []
250   --enable-pic             build position-independent code
251   --enable-thumb           compile for Thumb instruction set
252   --enable-lto             use link-time optimization
253
254 Advanced options (experts only):
255   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
256   --disable-symver         disable symbol versioning
257   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
258   --disable-safe-bitstream-reader
259                            disable buffer boundary checking in bitreaders
260                            (faster, but may crash)
261   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
262   --enable-sram            allow use of on-chip SRAM
263
264 Optimization options (experts only):
265   --disable-asm            disable all assembler optimizations
266   --disable-altivec        disable AltiVec optimizations
267   --disable-amd3dnow       disable 3DNow! optimizations
268   --disable-amd3dnowext    disable 3DNow! extended optimizations
269   --disable-mmx            disable MMX optimizations
270   --disable-mmxext         disable MMXEXT optimizations
271   --disable-sse            disable SSE optimizations
272   --disable-sse2           disable SSE2 optimizations
273   --disable-sse3           disable SSE3 optimizations
274   --disable-ssse3          disable SSSE3 optimizations
275   --disable-sse4           disable SSE4 optimizations
276   --disable-sse42          disable SSE4.2 optimizations
277   --disable-avx            disable AVX optimizations
278   --disable-xop            disable XOP optimizations
279   --disable-fma3           disable FMA3 optimizations
280   --disable-fma4           disable FMA4 optimizations
281   --disable-avx2           disable AVX2 optimizations
282   --disable-armv5te        disable armv5te optimizations
283   --disable-armv6          disable armv6 optimizations
284   --disable-armv6t2        disable armv6t2 optimizations
285   --disable-vfp            disable VFP optimizations
286   --disable-neon           disable NEON optimizations
287   --disable-vis            disable VIS optimizations
288   --disable-inline-asm     disable use of inline assembler
289   --disable-yasm           disable use of yasm assembler
290
291 Developer options (useful when working on Libav itself):
292   --disable-debug          disable debugging symbols
293   --enable-debug=LEVEL     set the debug level [$debuglevel]
294   --disable-optimizations  disable compiler optimizations
295   --enable-extra-warnings  enable more compiler warnings
296   --samples=PATH           location of test samples for FATE, if not set use
297                            \$LIBAV_SAMPLES at make invocation time.
298   --enable-neon-clobber-test check NEON registers for clobbering (should be
299                            used only for debugging purposes)
300   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
301                            should be used only for debugging purposes)
302   --enable-random          randomly enable/disable components
303   --disable-random
304   --enable-random=LIST     randomly enable/disable specific components or
305   --disable-random=LIST    component groups. LIST is a comma-separated list
306                            of NAME[:PROB] entries where NAME is a component
307                            (group) and PROB the probability associated with
308                            NAME (default 0.5).
309   --random-seed=VALUE      seed value for --enable/disable-random
310
311 NOTE: Object files are built at the place where configure is launched.
312 EOF
313   exit 0
314 }
315
316 quotes='""'
317
318 log(){
319     echo "$@" >> $logfile
320 }
321
322 log_file(){
323     log BEGIN $1
324     pr -n -t $1 >> $logfile
325     log END $1
326 }
327
328 echolog(){
329     log "$@"
330     echo "$@"
331 }
332
333 warn(){
334     log "WARNING: $*"
335     WARNINGS="${WARNINGS}WARNING: $*\n"
336 }
337
338 die(){
339     echolog "$@"
340     cat <<EOF
341
342 If you think configure made a mistake, make sure you are using the latest
343 version from Git.  If the latest version fails, report the problem to the
344 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
345 EOF
346     if disabled logging; then
347         cat <<EOF
348 Rerun configure with logging enabled (do not use --disable-logging), and
349 include the log this produces with your report.
350 EOF
351     else
352         cat <<EOF
353 Include the log file "$logfile" produced by configure as this will help
354 solving the problem.
355 EOF
356     fi
357     exit 1
358 }
359
360 # Avoid locale weirdness, besides we really just want to translate ASCII.
361 toupper(){
362     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
363 }
364
365 tolower(){
366     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
367 }
368
369 c_escape(){
370     echo "$*" | sed 's/["\\]/\\\0/g'
371 }
372
373 sh_quote(){
374     v=$(echo "$1" | sed "s/'/'\\\\''/g")
375     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
376     echo "$v"
377 }
378
379 cleanws(){
380     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
381 }
382
383 filter(){
384     pat=$1
385     shift
386     for v; do
387         eval "case $v in $pat) echo $v ;; esac"
388     done
389 }
390
391 filter_out(){
392     pat=$1
393     shift
394     for v; do
395         eval "case $v in $pat) ;; *) echo $v ;; esac"
396     done
397 }
398
399 map(){
400     m=$1
401     shift
402     for v; do eval $m; done
403 }
404
405 add_suffix(){
406     suffix=$1
407     shift
408     for v; do echo ${v}${suffix}; done
409 }
410
411 set_all(){
412     value=$1
413     shift
414     for var in $*; do
415         eval $var=$value
416     done
417 }
418
419 set_weak(){
420     value=$1
421     shift
422     for var; do
423         eval : \${$var:=$value}
424     done
425 }
426
427 sanitize_var_name(){
428     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
429 }
430
431 set_safe(){
432     var=$1
433     shift
434     eval $(sanitize_var_name "$var")='$*'
435 }
436
437 get_safe(){
438     eval echo \$$(sanitize_var_name "$1")
439 }
440
441 pushvar(){
442     for pvar in $*; do
443         eval level=\${${pvar}_level:=0}
444         eval ${pvar}_${level}="\$$pvar"
445         eval ${pvar}_level=$(($level+1))
446     done
447 }
448
449 popvar(){
450     for pvar in $*; do
451         eval level=\${${pvar}_level:-0}
452         test $level = 0 && continue
453         eval level=$(($level-1))
454         eval $pvar="\${${pvar}_${level}}"
455         eval ${pvar}_level=$level
456         eval unset ${pvar}_${level}
457     done
458 }
459
460 enable(){
461     set_all yes $*
462 }
463
464 disable(){
465     set_all no $*
466 }
467
468 enable_weak(){
469     set_weak yes $*
470 }
471
472 disable_weak(){
473     set_weak no $*
474 }
475
476 enable_safe(){
477     for var; do
478         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
479     done
480 }
481
482 disable_safe(){
483     for var; do
484         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
485     done
486 }
487
488 do_enable_deep(){
489     for var; do
490         enabled $var && continue
491         eval sel="\$${var}_select"
492         eval sgs="\$${var}_suggest"
493         pushvar var sgs
494         enable_deep $sel
495         popvar sgs
496         enable_deep_weak $sgs
497         popvar var
498     done
499 }
500
501 enable_deep(){
502     do_enable_deep $*
503     enable $*
504 }
505
506 enable_deep_weak(){
507     for var; do
508         disabled $var && continue
509         pushvar var
510         do_enable_deep $var
511         popvar var
512         enable_weak $var
513     done
514 }
515
516 enabled(){
517     test "${1#!}" = "$1" && op== || op=!=
518     eval test "x\$${1#!}" $op "xyes"
519 }
520
521 disabled(){
522     test "${1#!}" = "$1" && op== || op=!=
523     eval test "x\$${1#!}" $op "xno"
524 }
525
526 enabled_all(){
527     for opt; do
528         enabled $opt || return 1
529     done
530 }
531
532 disabled_all(){
533     for opt; do
534         disabled $opt || return 1
535     done
536 }
537
538 enabled_any(){
539     for opt; do
540         enabled $opt && return 0
541     done
542 }
543
544 disabled_any(){
545     for opt; do
546         disabled $opt && return 0
547     done
548     return 1
549 }
550
551 set_default(){
552     for opt; do
553         eval : \${$opt:=\$${opt}_default}
554     done
555 }
556
557 is_in(){
558     value=$1
559     shift
560     for var in $*; do
561         [ $var = $value ] && return 0
562     done
563     return 1
564 }
565
566 do_check_deps(){
567     for cfg; do
568         cfg="${cfg#!}"
569         enabled ${cfg}_checking && die "Circular dependency for $cfg."
570         disabled ${cfg}_checking && continue
571         enable ${cfg}_checking
572         append allopts $cfg
573
574         eval dep_all="\$${cfg}_deps"
575         eval dep_any="\$${cfg}_deps_any"
576         eval dep_sel="\$${cfg}_select"
577         eval dep_sgs="\$${cfg}_suggest"
578         eval dep_ifa="\$${cfg}_if"
579         eval dep_ifn="\$${cfg}_if_any"
580
581         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
582         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
583         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
584
585         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
586         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
587         enabled_all  $dep_all || disable $cfg
588         enabled_any  $dep_any || disable $cfg
589         disabled_any $dep_sel && disable $cfg
590
591         if enabled $cfg; then
592             enable_deep $dep_sel
593             enable_deep_weak $dep_sgs
594         fi
595
596         disable ${cfg}_checking
597     done
598 }
599
600 check_deps(){
601     unset allopts
602
603     do_check_deps "$@"
604
605     for cfg in $allopts; do
606         enabled $cfg || continue
607         eval dep_extralibs="\$${cfg}_extralibs"
608         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
609     done
610 }
611
612 print_config(){
613     pfx=$1
614     files=$2
615     shift 2
616     map 'eval echo "$v \${$v:-no}"' "$@" |
617     awk "BEGIN { split(\"$files\", files) }
618         {
619             c = \"$pfx\" toupper(\$1);
620             v = \$2;
621             sub(/yes/, 1, v);
622             sub(/no/,  0, v);
623             for (f in files) {
624                 file = files[f];
625                 if (file ~ /\\.h\$/) {
626                     printf(\"#define %s %d\\n\", c, v) >>file;
627                 } else if (file ~ /\\.asm\$/) {
628                     printf(\"%%define %s %d\\n\", c, v) >>file;
629                 } else if (file ~ /\\.mak\$/) {
630                     n = -v ? \"\" : \"!\";
631                     printf(\"%s%s=yes\\n\", n, c) >>file;
632                 }
633             }
634         }"
635 }
636
637 print_enabled(){
638     suf=$1
639     shift
640     for v; do
641         enabled $v && printf "%s\n" ${v%$suf};
642     done
643 }
644
645 append(){
646     var=$1
647     shift
648     eval "$var=\"\$$var $*\""
649 }
650
651 prepend(){
652     var=$1
653     shift
654     eval "$var=\"$* \$$var\""
655 }
656
657 add_cppflags(){
658     append CPPFLAGS "$@"
659 }
660
661 add_cflags(){
662     append CFLAGS $($cflags_filter "$@")
663 }
664
665 add_asflags(){
666     append ASFLAGS $($asflags_filter "$@")
667 }
668
669 add_ldflags(){
670     append LDFLAGS $($ldflags_filter "$@")
671 }
672
673 add_stripflags(){
674     append STRIPFLAGS "$@"
675 }
676
677 add_extralibs(){
678     prepend extralibs $($ldflags_filter "$@")
679 }
680
681 add_host_cppflags(){
682     append host_cppflags "$@"
683 }
684
685 add_host_cflags(){
686     append host_cflags $($host_cflags_filter "$@")
687 }
688
689 add_host_ldflags(){
690     append host_ldflags $($host_ldflags_filter "$@")
691 }
692
693 add_compat(){
694     append compat_objs $1
695     shift
696     map 'add_cppflags -D$v' "$@"
697 }
698
699 check_cmd(){
700     log "$@"
701     "$@" >> $logfile 2>&1
702 }
703
704 cc_o(){
705     eval printf '%s\\n' $CC_O
706 }
707
708 cc_e(){
709     eval printf '%s\\n' $CC_E
710 }
711
712 check_cc(){
713     log check_cc "$@"
714     cat > $TMPC
715     log_file $TMPC
716     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
717 }
718
719 check_cpp(){
720     log check_cpp "$@"
721     cat > $TMPC
722     log_file $TMPC
723     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
724 }
725
726 as_o(){
727     eval printf '%s\\n' $AS_O
728 }
729
730 check_as(){
731     log check_as "$@"
732     cat > $TMPS
733     log_file $TMPS
734     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
735 }
736
737 check_inline_asm(){
738     log check_inline_asm "$@"
739     name="$1"
740     code="$2"
741     shift 2
742     disable $name
743     check_cc "$@" <<EOF && enable $name
744 void foo(void){ __asm__ volatile($code); }
745 EOF
746 }
747
748 check_insn(){
749     log check_insn "$@"
750     check_inline_asm ${1}_inline "\"$2\""
751     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
752 }
753
754 check_yasm(){
755     log check_yasm "$@"
756     echo "$1" > $TMPS
757     log_file $TMPS
758     shift 1
759     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
760 }
761
762 ld_o(){
763     eval printf '%s\\n' $LD_O
764 }
765
766 check_ld(){
767     log check_ld "$@"
768     flags=$(filter_out '-l*' "$@")
769     libs=$(filter '-l*' "$@")
770     check_cc $($cflags_filter $flags) || return
771     flags=$($ldflags_filter $flags)
772     libs=$($ldflags_filter $libs)
773     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
774 }
775
776 print_include(){
777     hdr=$1
778     test "${hdr%.h}" = "${hdr}" &&
779         echo "#include $hdr"    ||
780         echo "#include <$hdr>"
781 }
782
783 check_code(){
784     log check_code "$@"
785     check=$1
786     headers=$2
787     code=$3
788     shift 3
789     {
790         for hdr in $headers; do
791             print_include $hdr
792         done
793         echo "int main(void) { $code; return 0; }"
794     } | check_$check "$@"
795 }
796
797 check_cppflags(){
798     log check_cppflags "$@"
799     check_cc "$@" <<EOF && append CPPFLAGS "$@"
800 int x;
801 EOF
802 }
803
804 test_cflags(){
805     log test_cflags "$@"
806     set -- $($cflags_filter "$@")
807     check_cc "$@" <<EOF
808 int x;
809 EOF
810 }
811
812 check_cflags(){
813     log check_cflags "$@"
814     test_cflags "$@" && add_cflags "$@"
815 }
816
817 test_ldflags(){
818     log test_ldflags "$@"
819     check_ld "$@" <<EOF
820 int main(void){ return 0; }
821 EOF
822 }
823
824 check_ldflags(){
825     log check_ldflags "$@"
826     test_ldflags "$@" && add_ldflags "$@"
827 }
828
829 test_stripflags(){
830     log test_stripflags "$@"
831     # call check_cc to get a fresh TMPO
832     check_cc <<EOF
833 int main(void) { return 0; }
834 EOF
835     check_cmd $strip $STRIPFLAGS "$@" $TMPO
836 }
837
838 check_stripflags(){
839     log check_stripflags "$@"
840     test_stripflags "$@" && add_stripflags "$@"
841 }
842
843 check_header(){
844     log check_header "$@"
845     header=$1
846     shift
847     disable_safe $header
848     check_cpp "$@" <<EOF && enable_safe $header
849 #include <$header>
850 int x;
851 EOF
852 }
853
854 check_func(){
855     log check_func "$@"
856     func=$1
857     shift
858     disable $func
859     check_ld "$@" <<EOF && enable $func
860 extern int $func();
861 int main(void){ $func(); }
862 EOF
863 }
864
865 check_mathfunc(){
866     log check_mathfunc "$@"
867     func=$1
868     narg=$2
869     shift 2
870     test $narg = 2 && args="f, g" || args="f"
871     disable $func
872     check_ld "$@" <<EOF && enable $func
873 #include <math.h>
874 float foo(float f, float g) { return $func($args); }
875 int main(void){ return 0; }
876 EOF
877 }
878
879 check_func_headers(){
880     log check_func_headers "$@"
881     headers=$1
882     funcs=$2
883     shift 2
884     {
885         for hdr in $headers; do
886             print_include $hdr
887         done
888         for func in $funcs; do
889             echo "long check_$func(void) { return (long) $func; }"
890         done
891         echo "int main(void) { return 0; }"
892     } | check_ld "$@" && enable $funcs && enable_safe $headers
893 }
894
895 check_cpp_condition(){
896     log check_cpp_condition "$@"
897     header=$1
898     condition=$2
899     shift 2
900     check_cpp "$@" <<EOF
901 #include <$header>
902 #if !($condition)
903 #error "unsatisfied condition: $condition"
904 #endif
905 EOF
906 }
907
908 check_lib(){
909     log check_lib "$@"
910     header="$1"
911     func="$2"
912     shift 2
913     check_header $header && check_func $func "$@" && add_extralibs "$@"
914 }
915
916 check_lib2(){
917     log check_lib2 "$@"
918     headers="$1"
919     funcs="$2"
920     shift 2
921     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
922 }
923
924 check_pkg_config(){
925     log check_pkg_config "$@"
926     pkg="$1"
927     headers="$2"
928     funcs="$3"
929     shift 3
930     check_cmd $pkg_config --exists --print-errors $pkg || return
931     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
932     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
933     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
934         set_safe ${pkg}_cflags $pkg_cflags   &&
935         set_safe ${pkg}_libs   $pkg_libs
936 }
937
938 check_exec(){
939     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
940 }
941
942 check_exec_crash(){
943     code=$(cat)
944
945     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
946     # are safe but may not be available everywhere.  Thus we use
947     # raise(SIGTERM) instead.  The check is run in a subshell so we
948     # can redirect the "Terminated" message from the shell.  SIGBUS
949     # is not defined by standard C so it is used conditionally.
950
951     (check_exec "$@") >> $logfile 2>&1 <<EOF
952 #include <signal.h>
953 static void sighandler(int sig){
954     raise(SIGTERM);
955 }
956 int foo(void){
957     $code
958 }
959 int (*func_ptr)(void) = foo;
960 int main(void){
961     signal(SIGILL, sighandler);
962     signal(SIGFPE, sighandler);
963     signal(SIGSEGV, sighandler);
964 #ifdef SIGBUS
965     signal(SIGBUS, sighandler);
966 #endif
967     return func_ptr();
968 }
969 EOF
970 }
971
972 check_type(){
973     log check_type "$@"
974     headers=$1
975     type=$2
976     shift 2
977     disable_safe "$type"
978     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
979 }
980
981 check_struct(){
982     log check_struct "$@"
983     headers=$1
984     struct=$2
985     member=$3
986     shift 3
987     disable_safe "${struct}_${member}"
988     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
989         enable_safe "${struct}_${member}"
990 }
991
992 check_builtin(){
993     log check_builtin "$@"
994     name=$1
995     headers=$2
996     builtin=$3
997     shift 3
998     disable "$name"
999     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1000 }
1001
1002 check_compile_assert(){
1003     log check_compile_assert "$@"
1004     name=$1
1005     headers=$2
1006     condition=$3
1007     shift 3
1008     disable "$name"
1009     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1010 }
1011
1012 require(){
1013     name="$1"
1014     header="$2"
1015     func="$3"
1016     shift 3
1017     check_lib $header $func "$@" || die "ERROR: $name not found"
1018 }
1019
1020 require2(){
1021     name="$1"
1022     headers="$2"
1023     func="$3"
1024     shift 3
1025     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1026 }
1027
1028 require_pkg_config(){
1029     pkg="$1"
1030     check_pkg_config "$@" || die "ERROR: $pkg not found"
1031     add_cflags    $(get_safe ${pkg}_cflags)
1032     add_extralibs $(get_safe ${pkg}_libs)
1033 }
1034
1035 hostcc_e(){
1036     eval printf '%s\\n' $HOSTCC_E
1037 }
1038
1039 hostcc_o(){
1040     eval printf '%s\\n' $HOSTCC_O
1041 }
1042
1043 check_host_cc(){
1044     log check_host_cc "$@"
1045     cat > $TMPC
1046     log_file $TMPC
1047     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1048 }
1049
1050 check_host_cpp(){
1051     log check_host_cpp "$@"
1052     cat > $TMPC
1053     log_file $TMPC
1054     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1055 }
1056
1057 check_host_cppflags(){
1058     log check_host_cppflags "$@"
1059     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1060 int x;
1061 EOF
1062 }
1063
1064 check_host_cflags(){
1065     log check_host_cflags "$@"
1066     set -- $($host_cflags_filter "$@")
1067     check_host_cc "$@" <<EOF && append host_cflags "$@"
1068 int x;
1069 EOF
1070 }
1071
1072 check_host_cpp_condition(){
1073     log check_host_cpp_condition "$@"
1074     header=$1
1075     condition=$2
1076     shift 2
1077     check_host_cpp "$@" <<EOF
1078 #include <$header>
1079 #if !($condition)
1080 #error "unsatisfied condition: $condition"
1081 #endif
1082 EOF
1083 }
1084
1085 apply(){
1086     file=$1
1087     shift
1088     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1089 }
1090
1091 cp_if_changed(){
1092     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1093     mkdir -p "$(dirname $2)"
1094     $cp_f "$1" "$2"
1095 }
1096
1097 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1098 # system-dependent things.
1099
1100 COMPONENT_LIST="
1101     bsfs
1102     decoders
1103     demuxers
1104     encoders
1105     filters
1106     hwaccels
1107     indevs
1108     muxers
1109     outdevs
1110     parsers
1111     protocols
1112 "
1113
1114 EXAMPLE_LIST="
1115     avcodec_example
1116     filter_audio_example
1117     metadata_example
1118     output_example
1119     transcode_aac_example
1120 "
1121
1122 EXTERNAL_LIBRARY_LIST="
1123     avisynth
1124     bzlib
1125     frei0r
1126     gnutls
1127     libcdio
1128     libdc1394
1129     libfaac
1130     libfdk_aac
1131     libfreetype
1132     libgsm
1133     libilbc
1134     libmp3lame
1135     libopencore_amrnb
1136     libopencore_amrwb
1137     libopencv
1138     libopenjpeg
1139     libopus
1140     libpulse
1141     librtmp
1142     libschroedinger
1143     libspeex
1144     libtheora
1145     libvo_aacenc
1146     libvo_amrwbenc
1147     libvorbis
1148     libvpx
1149     libwavpack
1150     libwebp
1151     libx264
1152     libx265
1153     libxavs
1154     libxvid
1155     openssl
1156     x11grab
1157     zlib
1158 "
1159
1160 HWACCEL_LIST="
1161     dxva2
1162     vaapi
1163     vda
1164     vdpau
1165 "
1166
1167 LIBRARY_LIST="
1168     avcodec
1169     avdevice
1170     avfilter
1171     avformat
1172     avresample
1173     avutil
1174     swscale
1175 "
1176
1177 PROGRAM_LIST="
1178     avconv
1179     avplay
1180     avprobe
1181     avserver
1182 "
1183
1184 CONFIG_LIST="
1185     $COMPONENT_LIST
1186     $EXAMPLE_LIST
1187     $EXTERNAL_LIBRARY_LIST
1188     $HWACCEL_LIST
1189     $LIBRARY_LIST
1190     $PROGRAM_LIST
1191     dct
1192     doc
1193     error_resilience
1194     fft
1195     gpl
1196     gray
1197     hardcoded_tables
1198     lsp
1199     lzo
1200     mdct
1201     memalign_hack
1202     neon_clobber_test
1203     network
1204     nonfree
1205     pic
1206     pod2man
1207     rdft
1208     runtime_cpudetect
1209     safe_bitstream_reader
1210     shared
1211     small
1212     sram
1213     static
1214     swscale_alpha
1215     texi2html
1216     thumb
1217     version3
1218     xmm_clobber_test
1219 "
1220
1221 THREADS_LIST="
1222     pthreads
1223     w32threads
1224 "
1225
1226 ATOMICS_LIST="
1227     atomics_gcc
1228     atomics_suncc
1229     atomics_win32
1230 "
1231
1232 ARCH_LIST="
1233     aarch64
1234     alpha
1235     arm
1236     avr32
1237     avr32_ap
1238     avr32_uc
1239     bfin
1240     ia64
1241     m68k
1242     mips
1243     mips64
1244     parisc
1245     ppc
1246     ppc64
1247     s390
1248     sh4
1249     sparc
1250     sparc64
1251     tilegx
1252     tilepro
1253     tomi
1254     x86
1255     x86_32
1256     x86_64
1257 "
1258
1259 ARCH_EXT_LIST_ARM="
1260     armv5te
1261     armv6
1262     armv6t2
1263     neon
1264     vfp
1265     vfpv3
1266 "
1267
1268 ARCH_EXT_LIST_X86_SIMD="
1269     amd3dnow
1270     amd3dnowext
1271     avx
1272     avx2
1273     fma3
1274     fma4
1275     mmx
1276     mmxext
1277     sse
1278     sse2
1279     sse3
1280     sse4
1281     sse42
1282     ssse3
1283     xop
1284 "
1285
1286 ARCH_EXT_LIST_X86="
1287     $ARCH_EXT_LIST_X86_SIMD
1288     cpunop
1289     i686
1290 "
1291
1292 ARCH_EXT_LIST="
1293     $ARCH_EXT_LIST_ARM
1294     $ARCH_EXT_LIST_X86
1295     altivec
1296     ppc4xx
1297     vis
1298 "
1299
1300 HAVE_LIST_CMDLINE="
1301     inline_asm
1302     symver
1303     yasm
1304 "
1305
1306 HAVE_LIST_PUB="
1307     bigendian
1308     fast_unaligned
1309 "
1310
1311 MATH_FUNCS="
1312     atanf
1313     atan2f
1314     cbrtf
1315     cosf
1316     exp2
1317     exp2f
1318     expf
1319     isinf
1320     isnan
1321     ldexpf
1322     llrint
1323     llrintf
1324     log2
1325     log2f
1326     log10f
1327     lrint
1328     lrintf
1329     powf
1330     rint
1331     round
1332     roundf
1333     sinf
1334     trunc
1335     truncf
1336 "
1337
1338 HAVE_LIST="
1339     $ARCH_EXT_LIST
1340     $(add_suffix _external $ARCH_EXT_LIST)
1341     $(add_suffix _inline   $ARCH_EXT_LIST)
1342     $ATOMICS_LIST
1343     $HAVE_LIST_CMDLINE
1344     $HAVE_LIST_PUB
1345     $MATH_FUNCS
1346     $THREADS_LIST
1347     aligned_malloc
1348     aligned_stack
1349     alsa_asoundlib_h
1350     altivec_h
1351     arpa_inet_h
1352     asm_mod_q
1353     atomic_cas_ptr
1354     atomics_native
1355     attribute_may_alias
1356     attribute_packed
1357     cdio_paranoia_h
1358     cdio_paranoia_paranoia_h
1359     closesocket
1360     CommandLineToArgvW
1361     CryptGenRandom
1362     dcbzl
1363     dev_bktr_ioctl_bt848_h
1364     dev_bktr_ioctl_meteor_h
1365     dev_ic_bt8xx_h
1366     dev_video_bktr_ioctl_bt848_h
1367     dev_video_meteor_ioctl_meteor_h
1368     direct_h
1369     dlfcn_h
1370     dlopen
1371     dos_paths
1372     dxva_h
1373     ebp_available
1374     ebx_available
1375     fast_64bit
1376     fast_clz
1377     fast_cmov
1378     fcntl
1379     flt_lim
1380     fork
1381     getaddrinfo
1382     gethrtime
1383     getopt
1384     GetProcessAffinityMask
1385     GetProcessMemoryInfo
1386     GetProcessTimes
1387     getrusage
1388     getservbyport
1389     GetSystemTimeAsFileTime
1390     gettimeofday
1391     gnu_as
1392     gsm_h
1393     ibm_asm
1394     inet_aton
1395     inline_asm_labels
1396     io_h
1397     isatty
1398     jack_port_get_latency_range
1399     ldbrx
1400     libc_msvcrt
1401     libdc1394_1
1402     libdc1394_2
1403     local_aligned_16
1404     local_aligned_8
1405     localtime_r
1406     loongson
1407     mach_absolute_time
1408     mach_mach_time_h
1409     machine_ioctl_bt848_h
1410     machine_ioctl_meteor_h
1411     machine_rw_barrier
1412     malloc_h
1413     MapViewOfFile
1414     memalign
1415     MemoryBarrier
1416     mkstemp
1417     mm_empty
1418     mmap
1419     mprotect
1420     nanosleep
1421     poll_h
1422     posix_memalign
1423     pragma_deprecated
1424     rdtsc
1425     sched_getaffinity
1426     sdl
1427     SetConsoleTextAttribute
1428     setmode
1429     setrlimit
1430     Sleep
1431     sndio_h
1432     socklen_t
1433     soundcard_h
1434     strerror_r
1435     strptime
1436     struct_addrinfo
1437     struct_group_source_req
1438     struct_ip_mreq_source
1439     struct_ipv6_mreq
1440     struct_pollfd
1441     struct_rusage_ru_maxrss
1442     struct_sockaddr_in6
1443     struct_sockaddr_sa_len
1444     struct_sockaddr_storage
1445     struct_v4l2_frmivalenum_discrete
1446     symver_asm_label
1447     symver_gnu_asm
1448     sync_val_compare_and_swap
1449     sys_mman_h
1450     sys_param_h
1451     sys_resource_h
1452     sys_select_h
1453     sys_soundcard_h
1454     sys_time_h
1455     sys_un_h
1456     sys_videoio_h
1457     sysconf
1458     sysctl
1459     threads
1460     unistd_h
1461     usleep
1462     vdpau_x11
1463     vfp_args
1464     VirtualAlloc
1465     windows_h
1466     winsock2_h
1467     xform_asm
1468     xlib
1469     xmm_clobbers
1470 "
1471
1472 # options emitted with CONFIG_ prefix but not available on the command line
1473 CONFIG_EXTRA="
1474     aandcttables
1475     ac3dsp
1476     audio_frame_queue
1477     dsputil
1478     gcrypt
1479     golomb
1480     gplv3
1481     h263dsp
1482     h264chroma
1483     h264dsp
1484     h264pred
1485     h264qpel
1486     hpeldsp
1487     huffman
1488     intrax8
1489     lgplv3
1490     lpc
1491     mpegaudio
1492     mpegaudiodsp
1493     mpegvideo
1494     mpegvideoenc
1495     nettle
1496     rangecoder
1497     riffdec
1498     riffenc
1499     rtpdec
1500     rtpenc_chain
1501     sinewin
1502     videodsp
1503     vp3dsp
1504 "
1505
1506 CMDLINE_SELECT="
1507     $ARCH_EXT_LIST
1508     $CONFIG_LIST
1509     $HAVE_LIST_CMDLINE
1510     $THREADS_LIST
1511     asm
1512     cross_compile
1513     debug
1514     extra_warnings
1515     logging
1516     lto
1517     optimizations
1518 "
1519
1520 PATHS_LIST="
1521     bindir
1522     datadir
1523     docdir
1524     incdir
1525     libdir
1526     mandir
1527     prefix
1528     shlibdir
1529 "
1530
1531 CMDLINE_SET="
1532     $PATHS_LIST
1533     ar
1534     arch
1535     as
1536     build_suffix
1537     cc
1538     cpu
1539     cross_prefix
1540     dep_cc
1541     extra_version
1542     host_cc
1543     host_cflags
1544     host_ld
1545     host_ldflags
1546     host_libs
1547     host_os
1548     ld
1549     logfile
1550     malloc_prefix
1551     nm
1552     optflags
1553     pkg_config
1554     pkg_config_flags
1555     random_seed
1556     samples
1557     sysinclude
1558     sysroot
1559     target_exec
1560     target_os
1561     target_path
1562     target_samples
1563     toolchain
1564 "
1565
1566 CMDLINE_APPEND="
1567     extra_cflags
1568     host_cppflags
1569 "
1570
1571 # code dependency declarations
1572
1573 # architecture extensions
1574
1575 armv5te_deps="arm"
1576 armv6_deps="arm"
1577 armv6t2_deps="arm"
1578 neon_deps_any="aarch64 arm"
1579 vfp_deps_any="aarch64 arm"
1580 vfpv3_deps="vfp"
1581
1582 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1583
1584 altivec_deps="ppc"
1585 ppc4xx_deps="ppc"
1586
1587 vis_deps="sparc"
1588
1589 cpunop_deps="i686"
1590 x86_64_select="i686"
1591 x86_64_suggest="fast_cmov"
1592
1593 amd3dnow_deps="mmx"
1594 amd3dnowext_deps="amd3dnow"
1595 i686_deps="x86"
1596 mmx_deps="x86"
1597 mmxext_deps="mmx"
1598 sse_deps="mmxext"
1599 sse2_deps="sse"
1600 sse3_deps="sse2"
1601 ssse3_deps="sse3"
1602 sse4_deps="ssse3"
1603 sse42_deps="sse4"
1604 avx_deps="sse42"
1605 xop_deps="avx"
1606 fma3_deps="avx"
1607 fma4_deps="avx"
1608 avx2_deps="avx"
1609
1610 mmx_external_deps="yasm"
1611 mmx_inline_deps="inline_asm"
1612 mmx_suggest="mmx_external mmx_inline"
1613
1614 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1615     eval dep=\$${ext}_deps
1616     eval ${ext}_external_deps='"${dep}_external"'
1617     eval ${ext}_inline_deps='"${dep}_inline"'
1618     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1619 done
1620
1621 aligned_stack_if_any="aarch64 ppc x86"
1622 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1623 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1624 fast_unaligned_if_any="aarch64 ppc x86"
1625
1626 need_memalign="altivec neon sse"
1627
1628 # system capabilities
1629 log2_deps="!libc_msvcrt"
1630
1631 symver_if_any="symver_asm_label symver_gnu_asm"
1632
1633 # threading support
1634 atomics_gcc_if="sync_val_compare_and_swap"
1635 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1636 atomics_win32_if="MemoryBarrier"
1637 atomics_native_if_any="$ATOMICS_LIST"
1638 w32threads_deps="atomics_native"
1639 threads_if_any="$THREADS_LIST"
1640
1641 # subsystems
1642 dct_select="rdft"
1643 error_resilience_select="dsputil"
1644 mdct_select="fft"
1645 rdft_select="fft"
1646 mpegaudio_select="mpegaudiodsp"
1647 mpegaudiodsp_select="dct"
1648 mpegvideo_select="dsputil hpeldsp videodsp"
1649 mpegvideoenc_select="mpegvideo"
1650
1651 # decoders / encoders
1652 aac_decoder_select="mdct sinewin"
1653 aac_encoder_select="audio_frame_queue mdct sinewin"
1654 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1655 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1656 ac3_encoder_select="mdct ac3dsp dsputil"
1657 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1658 aic_decoder_select="dsputil golomb"
1659 alac_encoder_select="lpc"
1660 als_decoder_select="dsputil"
1661 amrnb_decoder_select="lsp"
1662 amrwb_decoder_select="lsp"
1663 amv_decoder_select="sp5x_decoder"
1664 ape_decoder_select="dsputil"
1665 asv1_decoder_select="dsputil"
1666 asv1_encoder_select="dsputil"
1667 asv2_decoder_select="dsputil"
1668 asv2_encoder_select="dsputil"
1669 atrac1_decoder_select="mdct sinewin"
1670 atrac3_decoder_select="mdct"
1671 atrac3p_decoder_select="mdct sinewin"
1672 bink_decoder_select="dsputil hpeldsp"
1673 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1674 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1675 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1676 cllc_decoder_select="dsputil"
1677 comfortnoise_encoder_select="lpc"
1678 cook_decoder_select="dsputil mdct sinewin"
1679 cscd_decoder_select="lzo"
1680 cscd_decoder_suggest="zlib"
1681 dca_decoder_select="mdct"
1682 dnxhd_decoder_select="dsputil"
1683 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1684 dvvideo_decoder_select="dsputil"
1685 dvvideo_encoder_select="dsputil"
1686 dxa_decoder_deps="zlib"
1687 eac3_decoder_select="ac3_decoder"
1688 eac3_encoder_select="ac3_encoder"
1689 eamad_decoder_select="aandcttables dsputil mpegvideo"
1690 eatgq_decoder_select="aandcttables dsputil"
1691 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1692 ffv1_decoder_select="dsputil golomb rangecoder"
1693 ffv1_encoder_select="dsputil rangecoder"
1694 ffvhuff_decoder_select="huffyuv_decoder"
1695 ffvhuff_encoder_select="huffyuv_encoder"
1696 fic_decoder_select="dsputil golomb"
1697 flac_decoder_select="golomb"
1698 flac_encoder_select="dsputil golomb lpc"
1699 flashsv_decoder_deps="zlib"
1700 flashsv_encoder_deps="zlib"
1701 flashsv2_decoder_deps="zlib"
1702 flv_decoder_select="h263_decoder"
1703 flv_encoder_select="h263_encoder"
1704 fourxm_decoder_select="dsputil"
1705 fraps_decoder_select="dsputil huffman"
1706 g2m_decoder_deps="zlib"
1707 g2m_decoder_select="dsputil"
1708 h261_decoder_select="error_resilience mpegvideo"
1709 h261_encoder_select="aandcttables mpegvideoenc"
1710 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1711 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1712 h263i_decoder_select="h263_decoder"
1713 h263p_encoder_select="h263_encoder"
1714 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1715 h264_decoder_suggest="error_resilience"
1716 hevc_decoder_select="dsputil golomb videodsp"
1717 huffyuv_decoder_select="dsputil"
1718 huffyuv_encoder_select="dsputil huffman"
1719 iac_decoder_select="imc_decoder"
1720 imc_decoder_select="dsputil fft mdct sinewin"
1721 indeo3_decoder_select="hpeldsp"
1722 interplay_video_decoder_select="hpeldsp"
1723 jpegls_decoder_select="golomb mjpeg_decoder"
1724 jpegls_encoder_select="golomb"
1725 jv_decoder_select="dsputil"
1726 lagarith_decoder_select="dsputil"
1727 ljpeg_encoder_select="aandcttables mpegvideoenc"
1728 loco_decoder_select="golomb"
1729 mdec_decoder_select="dsputil error_resilience mpegvideo"
1730 metasound_decoder_select="lsp mdct sinewin"
1731 mimic_decoder_select="dsputil hpeldsp"
1732 mjpeg_decoder_select="dsputil hpeldsp"
1733 mjpeg_encoder_select="aandcttables mpegvideoenc"
1734 mjpegb_decoder_select="mjpeg_decoder"
1735 mlp_decoder_select="mlp_parser"
1736 motionpixels_decoder_select="dsputil"
1737 mp1_decoder_select="mpegaudio"
1738 mp1float_decoder_select="mpegaudio"
1739 mp2_decoder_select="mpegaudio"
1740 mp2float_decoder_select="mpegaudio"
1741 mp3_decoder_select="mpegaudio"
1742 mp3adu_decoder_select="mpegaudio"
1743 mp3adufloat_decoder_select="mpegaudio"
1744 mp3float_decoder_select="mpegaudio"
1745 mp3on4_decoder_select="mpegaudio"
1746 mp3on4float_decoder_select="mpegaudio"
1747 mpc7_decoder_select="dsputil mpegaudiodsp"
1748 mpc8_decoder_select="mpegaudiodsp"
1749 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1750 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1751 mpeg1video_decoder_select="error_resilience mpegvideo"
1752 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1753 mpeg2video_decoder_select="error_resilience mpegvideo"
1754 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1755 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1756 mpeg4_encoder_select="h263_encoder"
1757 msmpeg4v1_decoder_select="h263_decoder"
1758 msmpeg4v2_decoder_select="h263_decoder"
1759 msmpeg4v2_encoder_select="h263_encoder"
1760 msmpeg4v3_decoder_select="h263_decoder"
1761 msmpeg4v3_encoder_select="h263_encoder"
1762 mss2_decoder_select="error_resilience vc1_decoder"
1763 mxpeg_decoder_select="mjpeg_decoder"
1764 nellymoser_decoder_select="mdct sinewin"
1765 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1766 nuv_decoder_select="dsputil lzo"
1767 png_decoder_deps="zlib"
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       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg; } ||
3984                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version; } }
3985 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3986 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3987 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3988 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3989 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3990 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3991 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3992 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3993 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3994 enabled libvpx            && {
3995     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3996                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3997     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3998                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3999     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4000     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4001 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4002 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4003 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4004                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4005                                die "ERROR: libx264 version must be >= 0.118."; }
4006 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4007                              { check_cpp_condition x265.h "X265_BUILD >= 9" ||
4008                                die "ERROR: libx265 version must be >= 9."; }
4009 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4010 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4011 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4012                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4013                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4014                                die "ERROR: openssl not found"; }
4015
4016 if enabled gnutls; then
4017     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4018     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4019 fi
4020
4021 # libdc1394 check
4022 if enabled libdc1394; then
4023     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4024         enable libdc1394_2; } ||
4025     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4026         enable libdc1394_1; } ||
4027     die "ERROR: No version of libdc1394 found "
4028 fi
4029
4030 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4031     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4032     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4033     enable sdl
4034 fi
4035
4036 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4037 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4038
4039 check_header linux/fb.h
4040 check_header linux/videodev2.h
4041 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4042
4043 check_header sys/videoio.h
4044
4045 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4046 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4047 # w32api 3.12 had it defined wrong
4048 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4049
4050 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4051 { check_header dev/bktr/ioctl_meteor.h &&
4052   check_header dev/bktr/ioctl_bt848.h; } ||
4053 { check_header machine/ioctl_meteor.h &&
4054   check_header machine/ioctl_bt848.h; } ||
4055 { check_header dev/video/meteor/ioctl_meteor.h &&
4056   check_header dev/video/bktr/ioctl_bt848.h; } ||
4057 check_header dev/ic/bt8xx.h
4058
4059 check_header sndio.h
4060 check_header sys/soundcard.h
4061 check_header soundcard.h
4062
4063 enabled_any alsa_indev alsa_outdev &&
4064     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4065
4066 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4067     check_func jack_port_get_latency_range -ljack
4068
4069 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4070
4071 if enabled libcdio; then
4072     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4073     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4074 fi
4075
4076 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4077
4078 enabled x11grab                                           &&
4079 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4080 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4081 { enabled xlib || die "ERROR: Xlib not found"; }
4082
4083 enabled vdpau &&
4084     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4085     disable vdpau
4086
4087 enabled vdpau && enabled xlib &&
4088     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4089     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4090     enable vdpau_x11
4091
4092 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4093
4094 # add some useful compiler flags if supported
4095 check_cflags -Wdeclaration-after-statement
4096 check_cflags -Wall
4097 check_cflags -Wdisabled-optimization
4098 check_cflags -Wpointer-arith
4099 check_cflags -Wredundant-decls
4100 check_cflags -Wcast-qual
4101 check_cflags -Wwrite-strings
4102 check_cflags -Wtype-limits
4103 check_cflags -Wundef
4104 check_cflags -Wmissing-prototypes
4105 check_cflags -Wstrict-prototypes
4106 enabled extra_warnings && check_cflags -Winline
4107
4108 check_disable_warning(){
4109     warning_flag=-W${1#-Wno-}
4110     test_cflags $warning_flag && add_cflags $1
4111 }
4112
4113 check_disable_warning -Wno-parentheses
4114 check_disable_warning -Wno-switch
4115 check_disable_warning -Wno-format-zero-length
4116 check_disable_warning -Wno-pointer-sign
4117
4118 # add some linker flags
4119 check_ldflags -Wl,--warn-common
4120 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4121 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4122
4123 # add some strip flags
4124 # -wN '..@*' is more selective than -x, but not available everywhere.
4125 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4126
4127 enabled neon_clobber_test &&
4128     check_ldflags -Wl,--wrap,avcodec_open2              \
4129                   -Wl,--wrap,avcodec_decode_audio4      \
4130                   -Wl,--wrap,avcodec_decode_video2      \
4131                   -Wl,--wrap,avcodec_decode_subtitle2   \
4132                   -Wl,--wrap,avcodec_encode_audio2      \
4133                   -Wl,--wrap,avcodec_encode_video2      \
4134                   -Wl,--wrap,avcodec_encode_subtitle    \
4135                   -Wl,--wrap,avresample_convert ||
4136     disable neon_clobber_test
4137
4138 enabled xmm_clobber_test &&
4139     check_ldflags -Wl,--wrap,avcodec_open2              \
4140                   -Wl,--wrap,avcodec_decode_audio4      \
4141                   -Wl,--wrap,avcodec_decode_video2      \
4142                   -Wl,--wrap,avcodec_decode_subtitle2   \
4143                   -Wl,--wrap,avcodec_encode_audio2      \
4144                   -Wl,--wrap,avcodec_encode_video2      \
4145                   -Wl,--wrap,avcodec_encode_subtitle    \
4146                   -Wl,--wrap,avresample_convert         \
4147                   -Wl,--wrap,sws_scale ||
4148     disable xmm_clobber_test
4149
4150 echo "X{};" > $TMPV
4151 if test_ldflags -Wl,--version-script,$TMPV; then
4152     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4153     check_cc <<EOF && enable symver_asm_label
4154 void ff_foo(void) __asm__ ("av_foo@VERSION");
4155 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4156 EOF
4157     check_cc <<EOF && enable symver_gnu_asm
4158 __asm__(".symver ff_foo,av_foo@VERSION");
4159 void ff_foo(void) {}
4160 EOF
4161 fi
4162
4163 if [ -z "$optflags" ]; then
4164     if enabled small; then
4165         optflags=$cflags_size
4166     elif enabled optimizations; then
4167         optflags=$cflags_speed
4168     else
4169         optflags=$cflags_noopt
4170     fi
4171 fi
4172
4173 check_optflags(){
4174     check_cflags "$@"
4175     enabled lto && check_ldflags "$@"
4176 }
4177
4178
4179 if enabled lto; then
4180     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4181     check_cflags  -flto
4182     check_ldflags -flto $cpuflags
4183 fi
4184
4185 check_optflags $optflags
4186 check_optflags -fno-math-errno
4187 check_optflags -fno-signed-zeros
4188
4189 if enabled icc; then
4190     # Just warnings, no remarks
4191     check_cflags -w1
4192     # -wd: Disable following warnings
4193     # 144, 167, 556: -Wno-pointer-sign
4194     # 1292: attribute "foo" ignored
4195     # 1419: external declaration in primary source file
4196     # 10006: ignoring unknown option -fno-signed-zeros
4197     # 10148: ignoring unknown option -Wno-parentheses
4198     # 10156: ignoring option '-W'; no argument required
4199     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4200     # 11030: Warning unknown option --as-needed
4201     # 10156: ignoring option '-export'; no argument required
4202     check_ldflags -wd10156,11030
4203     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4204     enable ebp_available
4205     if enabled x86_32; then
4206         icc_version=$($cc -dumpversion)
4207         test ${icc_version%%.*} -ge 11 &&
4208             check_cflags -falign-stack=maintain-16-byte ||
4209             disable aligned_stack
4210     fi
4211 elif enabled ccc; then
4212     # disable some annoying warnings
4213     add_cflags -msg_disable bitnotint
4214     add_cflags -msg_disable mixfuncvoid
4215     add_cflags -msg_disable nonstandcast
4216     add_cflags -msg_disable unsupieee
4217 elif enabled gcc; then
4218     check_optflags -fno-tree-vectorize
4219     check_cflags -Werror=implicit-function-declaration
4220     check_cflags -Werror=missing-prototypes
4221     check_cflags -Werror=return-type
4222     check_cflags -Werror=declaration-after-statement
4223     check_cflags -Werror=vla
4224     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4225 elif enabled llvm_gcc; then
4226     check_cflags -mllvm -stack-alignment=16
4227 elif enabled clang; then
4228     check_cflags -mllvm -stack-alignment=16
4229     check_cflags -Qunused-arguments
4230     check_cflags -Werror=implicit-function-declaration
4231     check_cflags -Werror=missing-prototypes
4232     check_cflags -Werror=return-type
4233 elif enabled cparser; then
4234     add_cflags -Wno-missing-variable-declarations
4235     add_cflags -Wno-empty-statement
4236 elif enabled armcc; then
4237     # 2523: use of inline assembler is deprecated
4238     add_cflags -W${armcc_opt},--diag_suppress=2523
4239     add_cflags -W${armcc_opt},--diag_suppress=1207
4240     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4241     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4242     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4243     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4244 elif enabled tms470; then
4245     add_cflags -pds=824 -pds=837
4246     disable inline_asm
4247 elif enabled pathscale; then
4248     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4249 elif enabled_any msvc icl; then
4250     enabled x86_32 && disable aligned_stack
4251     enabled_all x86_32 debug && add_cflags -Oy-
4252     enabled debug && add_ldflags -debug
4253     enable pragma_deprecated
4254     if enabled icl; then
4255         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4256         # (correctly) on icl 13.x.
4257         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4258             add_cflags -Qansi-alias
4259         # icl will pass the inline asm tests but inline asm is currently
4260         # not supported (build will fail)
4261         disable inline_asm
4262     fi
4263 fi
4264
4265 case $as_type in
4266     clang)
4267         add_asflags -Qunused-arguments
4268     ;;
4269 esac
4270
4271 case $ld_type in
4272     clang)
4273         check_ldflags -Qunused-arguments
4274     ;;
4275 esac
4276
4277 case $target_os in
4278     osf1)
4279         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4280     ;;
4281     plan9)
4282         add_cppflags -Dmain=plan9_main
4283     ;;
4284 esac
4285
4286 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4287
4288 check_deps $CONFIG_LIST       \
4289            $CONFIG_EXTRA      \
4290            $HAVE_LIST         \
4291            $ALL_COMPONENTS    \
4292
4293 ! enabled_any memalign posix_memalign aligned_malloc &&
4294     enabled_any $need_memalign && enable memalign_hack
4295
4296 for thread in $THREADS_LIST; do
4297     if enabled $thread; then
4298         test -n "$thread_type" &&
4299             die "ERROR: Only one thread type must be selected." ||
4300             thread_type="$thread"
4301     fi
4302 done
4303
4304 echo "install prefix            $prefix"
4305 echo "source path               $source_path"
4306 echo "C compiler                $cc"
4307 echo "C library                 $libc_type"
4308 if test "$host_cc" != "$cc"; then
4309     echo "host C compiler           $host_cc"
4310     echo "host C library            $host_libc_type"
4311 fi
4312 echo "ARCH                      $arch ($cpu)"
4313 if test "$build_suffix" != ""; then
4314     echo "build suffix              $build_suffix"
4315 fi
4316 if test "$extra_version" != ""; then
4317     echo "version string suffix     $extra_version"
4318 fi
4319 echo "big-endian                ${bigendian-no}"
4320 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4321 if enabled x86; then
4322     echo "${yasmexe}                      ${yasm-no}"
4323     echo "MMX enabled               ${mmx-no}"
4324     echo "MMXEXT enabled            ${mmxext-no}"
4325     echo "3DNow! enabled            ${amd3dnow-no}"
4326     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4327     echo "SSE enabled               ${sse-no}"
4328     echo "SSSE3 enabled             ${ssse3-no}"
4329     echo "AVX enabled               ${avx-no}"
4330     echo "XOP enabled               ${xop-no}"
4331     echo "FMA3 enabled              ${fma3-no}"
4332     echo "FMA4 enabled              ${fma4-no}"
4333     echo "i686 features enabled     ${i686-no}"
4334     echo "CMOV is fast              ${fast_cmov-no}"
4335     echo "EBX available             ${ebx_available-no}"
4336     echo "EBP available             ${ebp_available-no}"
4337 fi
4338 if enabled aarch64; then
4339     echo "NEON enabled              ${neon-no}"
4340     echo "VFP enabled               ${vfp-no}"
4341 fi
4342 if enabled arm; then
4343     echo "ARMv5TE enabled           ${armv5te-no}"
4344     echo "ARMv6 enabled             ${armv6-no}"
4345     echo "ARMv6T2 enabled           ${armv6t2-no}"
4346     echo "VFP enabled               ${vfp-no}"
4347     echo "NEON enabled              ${neon-no}"
4348 fi
4349 if enabled ppc; then
4350     echo "AltiVec enabled           ${altivec-no}"
4351     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4352     echo "dcbzl available           ${dcbzl-no}"
4353 fi
4354 if enabled sparc; then
4355     echo "VIS enabled               ${vis-no}"
4356 fi
4357 echo "debug symbols             ${debug-no}"
4358 echo "optimize for size         ${small-no}"
4359 echo "optimizations             ${optimizations-no}"
4360 echo "static                    ${static-no}"
4361 echo "shared                    ${shared-no}"
4362 echo "new filter support        ${avfilter-no}"
4363 echo "network support           ${network-no}"
4364 echo "threading support         ${thread_type-no}"
4365 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4366 echo "SDL support               ${sdl-no}"
4367 test -n "$random_seed" &&
4368     echo "random seed               ${random_seed}"
4369 echo
4370
4371 echo "External libraries:"
4372 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4373 echo
4374
4375 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4376     echo "Enabled ${type}s:"
4377     eval list=\$$(toupper $type)_LIST
4378     print_enabled '_*' $list | print_3_columns
4379     echo
4380 done
4381
4382 license="LGPL version 2.1 or later"
4383 if enabled nonfree; then
4384     license="nonfree and unredistributable"
4385 elif enabled gplv3; then
4386     license="GPL version 3 or later"
4387 elif enabled lgplv3; then
4388     license="LGPL version 3 or later"
4389 elif enabled gpl; then
4390     license="GPL version 2 or later"
4391 fi
4392
4393 echo "License: $license"
4394
4395 echo "Creating config.mak and config.h..."
4396
4397 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4398
4399 config_files="$TMPH config.mak"
4400
4401 cat > config.mak <<EOF
4402 # Automatically generated by configure - do not modify!
4403 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4404 prefix=$prefix
4405 LIBDIR=\$(DESTDIR)$libdir
4406 SHLIBDIR=\$(DESTDIR)$shlibdir
4407 INCDIR=\$(DESTDIR)$incdir
4408 BINDIR=\$(DESTDIR)$bindir
4409 DATADIR=\$(DESTDIR)$datadir
4410 DOCDIR=\$(DESTDIR)$docdir
4411 MANDIR=\$(DESTDIR)$mandir
4412 SRC_PATH=$source_path
4413 CC_IDENT=$cc_ident
4414 ARCH=$arch
4415 CC=$cc
4416 AS=$as
4417 LD=$ld
4418 DEPCC=$dep_cc
4419 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4420 DEPAS=$as
4421 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4422 YASM=$yasmexe
4423 DEPYASM=$yasmexe
4424 AR=$ar
4425 ARFLAGS=$arflags
4426 AR_O=$ar_o
4427 RANLIB=$ranlib
4428 STRIP=$strip
4429 LN_S=$ln_s
4430 CPPFLAGS=$CPPFLAGS
4431 CFLAGS=$CFLAGS
4432 ASFLAGS=$ASFLAGS
4433 AS_C=$AS_C
4434 AS_O=$AS_O
4435 CC_C=$CC_C
4436 CC_E=$CC_E
4437 CC_O=$CC_O
4438 LD_O=$LD_O
4439 LD_LIB=$LD_LIB
4440 LD_PATH=$LD_PATH
4441 DLLTOOL=$dlltool
4442 LDFLAGS=$LDFLAGS
4443 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4444 STRIPFLAGS=$STRIPFLAGS
4445 YASMFLAGS=$YASMFLAGS
4446 BUILDSUF=$build_suffix
4447 FULLNAME=$FULLNAME
4448 LIBPREF=$LIBPREF
4449 LIBSUF=$LIBSUF
4450 LIBNAME=$LIBNAME
4451 SLIBPREF=$SLIBPREF
4452 SLIBSUF=$SLIBSUF
4453 EXESUF=$EXESUF
4454 EXTRA_VERSION=$extra_version
4455 CCDEP=$CCDEP
4456 CCDEP_FLAGS=$CCDEP_FLAGS
4457 ASDEP=$ASDEP
4458 ASDEP_FLAGS=$ASDEP_FLAGS
4459 CC_DEPFLAGS=$CC_DEPFLAGS
4460 AS_DEPFLAGS=$AS_DEPFLAGS
4461 HOSTCC=$host_cc
4462 HOSTLD=$host_ld
4463 HOSTCFLAGS=$host_cflags
4464 HOSTCPPFLAGS=$host_cppflags
4465 HOSTEXESUF=$HOSTEXESUF
4466 HOSTLDFLAGS=$host_ldflags
4467 HOSTLIBS=$host_libs
4468 DEPHOSTCC=$host_cc
4469 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4470 HOSTCCDEP=$HOSTCCDEP
4471 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4472 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4473 HOSTCC_C=$HOSTCC_C
4474 HOSTCC_O=$HOSTCC_O
4475 HOSTLD_O=$HOSTLD_O
4476 TARGET_EXEC=$target_exec $target_exec_args
4477 TARGET_PATH=$target_path
4478 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4479 CFLAGS-avplay=$sdl_cflags
4480 ZLIB=$($ldflags_filter -lz)
4481 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4482 EXTRALIBS=$extralibs
4483 COMPAT_OBJS=$compat_objs
4484 EXEOBJS=$exeobjs
4485 INSTALL=install
4486 LIBTARGET=${LIBTARGET}
4487 SLIBNAME=${SLIBNAME}
4488 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4489 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4490 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4491 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4492 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4493 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4494 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4495 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4496 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4497 EOF
4498
4499 get_version(){
4500     lcname=lib${1}
4501     name=$(toupper $lcname)
4502     file=$source_path/$lcname/version.h
4503     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4504     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4505     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4506     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4507     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4508 }
4509
4510 map 'get_version $v' $LIBRARY_LIST
4511
4512 print_program_libs(){
4513     eval "program_libs=\$${1}_libs"
4514     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4515 }
4516
4517 map 'print_program_libs $v' $PROGRAM_LIST
4518
4519 cat > $TMPH <<EOF
4520 /* Automatically generated by configure - do not modify! */
4521 #ifndef LIBAV_CONFIG_H
4522 #define LIBAV_CONFIG_H
4523 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4524 #define LIBAV_LICENSE "$(c_escape $license)"
4525 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4526 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4527 #define restrict $_restrict
4528 #define EXTERN_PREFIX "${extern_prefix}"
4529 #define EXTERN_ASM ${extern_prefix}
4530 #define SLIBSUF "$SLIBSUF"
4531 EOF
4532
4533 test -n "$malloc_prefix" &&
4534     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4535
4536 if enabled yasm; then
4537     append config_files $TMPASM
4538     printf '' >$TMPASM
4539 fi
4540
4541 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4542
4543 print_config ARCH_   "$config_files" $ARCH_LIST
4544 print_config HAVE_   "$config_files" $HAVE_LIST
4545 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4546                                      $CONFIG_EXTRA      \
4547                                      $ALL_COMPONENTS    \
4548
4549 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4550
4551 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4552 cp_if_changed $TMPH config.h
4553 touch .config
4554
4555 enabled yasm && cp_if_changed $TMPASM config.asm
4556
4557 cat > $TMPH <<EOF
4558 /* Generated by ffconf */
4559 #ifndef AVUTIL_AVCONFIG_H
4560 #define AVUTIL_AVCONFIG_H
4561 EOF
4562
4563 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4564
4565 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4566
4567 cp_if_changed $TMPH libavutil/avconfig.h
4568
4569 test -n "$WARNINGS" && printf "\n$WARNINGS"
4570
4571 # build pkg-config files
4572
4573 pkgconfig_generate(){
4574     name=$1
4575     shortname=${name#lib}${build_suffix}
4576     comment=$2
4577     version=$3
4578     libs=$4
4579     requires=$5
4580     enabled ${name#lib} || return 0
4581     mkdir -p $name
4582     cat <<EOF > $name/$name.pc
4583 prefix=$prefix
4584 exec_prefix=\${prefix}
4585 libdir=$libdir
4586 includedir=$incdir
4587
4588 Name: $name
4589 Description: $comment
4590 Version: $version
4591 Requires: $(enabled shared || echo $requires)
4592 Requires.private: $(enabled shared && echo $requires)
4593 Conflicts:
4594 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4595 Libs.private: $(enabled shared && echo $libs)
4596 Cflags: -I\${includedir}
4597 EOF
4598     cat <<EOF > $name/$name-uninstalled.pc
4599 prefix=
4600 exec_prefix=
4601 libdir=\${pcfiledir}
4602 includedir=${source_path}
4603
4604 Name: $name
4605 Description: $comment
4606 Version: $version
4607 Requires: $requires
4608 Conflicts:
4609 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4610 Cflags: -I\${includedir}
4611 EOF
4612 }
4613
4614 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4615 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4616 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4617 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4618
4619 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4620 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4621 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4622 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4623 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4624 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4625 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"