configure: Group toolchain options together in help output
[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 lpc_select="dsputil"
1645 mdct_select="fft"
1646 rdft_select="fft"
1647 mpegaudio_select="mpegaudiodsp"
1648 mpegaudiodsp_select="dct"
1649 mpegvideo_select="dsputil hpeldsp videodsp"
1650 mpegvideoenc_select="mpegvideo"
1651
1652 # decoders / encoders
1653 aac_decoder_select="mdct sinewin"
1654 aac_encoder_select="audio_frame_queue mdct sinewin"
1655 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1656 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1657 ac3_encoder_select="mdct ac3dsp dsputil"
1658 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1659 aic_decoder_select="dsputil golomb"
1660 alac_encoder_select="lpc"
1661 als_decoder_select="dsputil"
1662 amrnb_decoder_select="lsp"
1663 amrwb_decoder_select="lsp"
1664 amv_decoder_select="sp5x_decoder"
1665 ape_decoder_select="dsputil"
1666 asv1_decoder_select="dsputil"
1667 asv1_encoder_select="dsputil"
1668 asv2_decoder_select="dsputil"
1669 asv2_encoder_select="dsputil"
1670 atrac1_decoder_select="mdct sinewin"
1671 atrac3_decoder_select="mdct"
1672 atrac3p_decoder_select="mdct sinewin"
1673 bink_decoder_select="dsputil hpeldsp"
1674 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1675 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1676 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1677 cllc_decoder_select="dsputil"
1678 comfortnoise_encoder_select="lpc"
1679 cook_decoder_select="dsputil mdct sinewin"
1680 cscd_decoder_select="lzo"
1681 cscd_decoder_suggest="zlib"
1682 dca_decoder_select="mdct"
1683 dnxhd_decoder_select="dsputil"
1684 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1685 dvvideo_decoder_select="dsputil"
1686 dvvideo_encoder_select="dsputil"
1687 dxa_decoder_deps="zlib"
1688 eac3_decoder_select="ac3_decoder"
1689 eac3_encoder_select="ac3_encoder"
1690 eamad_decoder_select="aandcttables dsputil mpegvideo"
1691 eatgq_decoder_select="aandcttables dsputil"
1692 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1693 ffv1_decoder_select="dsputil golomb rangecoder"
1694 ffv1_encoder_select="dsputil rangecoder"
1695 ffvhuff_decoder_select="huffyuv_decoder"
1696 ffvhuff_encoder_select="huffyuv_encoder"
1697 fic_decoder_select="dsputil golomb"
1698 flac_decoder_select="golomb"
1699 flac_encoder_select="dsputil golomb lpc"
1700 flashsv_decoder_deps="zlib"
1701 flashsv_encoder_deps="zlib"
1702 flashsv2_decoder_deps="zlib"
1703 flv_decoder_select="h263_decoder"
1704 flv_encoder_select="h263_encoder"
1705 fourxm_decoder_select="dsputil"
1706 fraps_decoder_select="dsputil huffman"
1707 g2m_decoder_deps="zlib"
1708 g2m_decoder_select="dsputil"
1709 h261_decoder_select="error_resilience mpegvideo"
1710 h261_encoder_select="aandcttables mpegvideoenc"
1711 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1712 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1713 h263i_decoder_select="h263_decoder"
1714 h263p_encoder_select="h263_encoder"
1715 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1716 h264_decoder_suggest="error_resilience"
1717 hevc_decoder_select="dsputil golomb videodsp"
1718 huffyuv_decoder_select="dsputil"
1719 huffyuv_encoder_select="dsputil huffman"
1720 iac_decoder_select="imc_decoder"
1721 imc_decoder_select="dsputil fft mdct sinewin"
1722 indeo3_decoder_select="hpeldsp"
1723 interplay_video_decoder_select="hpeldsp"
1724 jpegls_decoder_select="golomb mjpeg_decoder"
1725 jpegls_encoder_select="golomb"
1726 jv_decoder_select="dsputil"
1727 lagarith_decoder_select="dsputil"
1728 ljpeg_encoder_select="aandcttables mpegvideoenc"
1729 loco_decoder_select="golomb"
1730 mdec_decoder_select="dsputil error_resilience mpegvideo"
1731 metasound_decoder_select="lsp mdct sinewin"
1732 mimic_decoder_select="dsputil hpeldsp"
1733 mjpeg_decoder_select="dsputil hpeldsp"
1734 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1735 mjpegb_decoder_select="mjpeg_decoder"
1736 mlp_decoder_select="dsputil mlp_parser"
1737 motionpixels_decoder_select="dsputil"
1738 mp1_decoder_select="mpegaudio"
1739 mp1float_decoder_select="mpegaudio"
1740 mp2_decoder_select="mpegaudio"
1741 mp2float_decoder_select="mpegaudio"
1742 mp3_decoder_select="mpegaudio"
1743 mp3adu_decoder_select="mpegaudio"
1744 mp3adufloat_decoder_select="mpegaudio"
1745 mp3float_decoder_select="mpegaudio"
1746 mp3on4_decoder_select="mpegaudio"
1747 mp3on4float_decoder_select="mpegaudio"
1748 mpc7_decoder_select="dsputil mpegaudiodsp"
1749 mpc8_decoder_select="dsputil mpegaudiodsp"
1750 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1751 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1752 mpeg1video_decoder_select="error_resilience mpegvideo"
1753 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1754 mpeg2video_decoder_select="error_resilience mpegvideo"
1755 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1756 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1757 mpeg4_encoder_select="h263_encoder"
1758 msmpeg4v1_decoder_select="h263_decoder"
1759 msmpeg4v2_decoder_select="h263_decoder"
1760 msmpeg4v2_encoder_select="h263_encoder"
1761 msmpeg4v3_decoder_select="h263_decoder"
1762 msmpeg4v3_encoder_select="h263_encoder"
1763 mss2_decoder_select="error_resilience vc1_decoder"
1764 mxpeg_decoder_select="mjpeg_decoder"
1765 nellymoser_decoder_select="mdct sinewin"
1766 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1767 nuv_decoder_select="dsputil lzo"
1768 png_decoder_deps="zlib"
1769 png_decoder_select="dsputil"
1770 png_encoder_deps="zlib"
1771 png_encoder_select="dsputil"
1772 prores_decoder_select="dsputil"
1773 prores_encoder_select="dsputil"
1774 qcelp_decoder_select="lsp"
1775 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1776 ra_144_encoder_select="audio_frame_queue lpc"
1777 ralf_decoder_select="golomb"
1778 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1779 rv10_encoder_select="h263_encoder"
1780 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1781 rv20_encoder_select="h263_encoder"
1782 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1783 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1784 shorten_decoder_select="golomb"
1785 sipr_decoder_select="lsp"
1786 sp5x_decoder_select="mjpeg_decoder"
1787 svq1_decoder_select="hpeldsp"
1788 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1789 svq3_decoder_select="h264_decoder hpeldsp mpegvideo"
1790 svq3_decoder_suggest="zlib"
1791 tak_decoder_select="dsputil"
1792 theora_decoder_select="vp3_decoder"
1793 thp_decoder_select="mjpeg_decoder"
1794 tiff_decoder_suggest="zlib"
1795 tiff_encoder_suggest="zlib"
1796 truehd_decoder_select="mlp_decoder"
1797 truemotion2_decoder_select="dsputil"
1798 truespeech_decoder_select="dsputil"
1799 tscc_decoder_deps="zlib"
1800 twinvq_decoder_select="mdct lsp sinewin"
1801 utvideo_decoder_select="dsputil"
1802 utvideo_encoder_select="dsputil huffman"
1803 vble_decoder_select="dsputil"
1804 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1805 vc1image_decoder_select="vc1_decoder"
1806 vorbis_decoder_select="mdct"
1807 vorbis_encoder_select="mdct"
1808 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1809 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1810 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1811 vp6a_decoder_select="vp6_decoder"
1812 vp6f_decoder_select="vp6_decoder"
1813 vp8_decoder_select="h264pred videodsp"
1814 vp9_decoder_select="videodsp"
1815 webp_decoder_select="vp8_decoder"
1816 wmapro_decoder_select="mdct sinewin"
1817 wmav1_decoder_select="mdct sinewin"
1818 wmav1_encoder_select="mdct sinewin"
1819 wmav2_decoder_select="mdct sinewin"
1820 wmav2_encoder_select="mdct sinewin"
1821 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1822 wmv1_decoder_select="h263_decoder"
1823 wmv1_encoder_select="h263_encoder"
1824 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1825 wmv2_encoder_select="h263_encoder"
1826 wmv3_decoder_select="vc1_decoder"
1827 wmv3image_decoder_select="wmv3_decoder"
1828 zerocodec_decoder_deps="zlib"
1829 zlib_decoder_deps="zlib"
1830 zlib_encoder_deps="zlib"
1831 zmbv_decoder_deps="zlib"
1832 zmbv_encoder_deps="zlib"
1833
1834 # hardware accelerators
1835 dxva2_deps="dxva2api_h"
1836 vaapi_deps="va_va_h"
1837 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1838 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1839 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1840
1841 h263_vaapi_hwaccel_deps="vaapi"
1842 h263_vaapi_hwaccel_select="h263_decoder"
1843 h263_vdpau_hwaccel_deps="vdpau"
1844 h263_vdpau_hwaccel_select="h263_decoder"
1845 h264_dxva2_hwaccel_deps="dxva2"
1846 h264_dxva2_hwaccel_select="h264_decoder"
1847 h264_vaapi_hwaccel_deps="vaapi"
1848 h264_vaapi_hwaccel_select="h264_decoder"
1849 h264_vda_hwaccel_deps="vda"
1850 h264_vda_hwaccel_select="h264_decoder"
1851 h264_vdpau_hwaccel_deps="vdpau"
1852 h264_vdpau_hwaccel_select="h264_decoder"
1853 mpeg1_vdpau_hwaccel_deps="vdpau"
1854 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1855 mpeg2_dxva2_hwaccel_deps="dxva2"
1856 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1857 mpeg2_vaapi_hwaccel_deps="vaapi"
1858 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1859 mpeg2_vdpau_hwaccel_deps="vdpau"
1860 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1861 mpeg4_vaapi_hwaccel_deps="vaapi"
1862 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1863 mpeg4_vdpau_hwaccel_deps="vdpau"
1864 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1865 vc1_dxva2_hwaccel_deps="dxva2"
1866 vc1_dxva2_hwaccel_select="vc1_decoder"
1867 vc1_vaapi_hwaccel_deps="vaapi"
1868 vc1_vaapi_hwaccel_select="vc1_decoder"
1869 vc1_vdpau_hwaccel_deps="vdpau"
1870 vc1_vdpau_hwaccel_select="vc1_decoder"
1871 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1872 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1873 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1874
1875 # parsers
1876 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1877 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1878 mpegvideo_parser_select="error_resilience mpegvideo"
1879 vc1_parser_select="mpegvideo"
1880
1881 # external libraries
1882 libfaac_encoder_deps="libfaac"
1883 libfaac_encoder_select="audio_frame_queue"
1884 libfdk_aac_decoder_deps="libfdk_aac"
1885 libfdk_aac_encoder_deps="libfdk_aac"
1886 libfdk_aac_encoder_select="audio_frame_queue"
1887 libgsm_decoder_deps="libgsm"
1888 libgsm_encoder_deps="libgsm"
1889 libgsm_ms_decoder_deps="libgsm"
1890 libgsm_ms_encoder_deps="libgsm"
1891 libilbc_decoder_deps="libilbc"
1892 libilbc_encoder_deps="libilbc"
1893 libmp3lame_encoder_deps="libmp3lame"
1894 libmp3lame_encoder_select="audio_frame_queue"
1895 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1896 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1897 libopencore_amrnb_encoder_select="audio_frame_queue"
1898 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1899 libopenjpeg_decoder_deps="libopenjpeg"
1900 libopenjpeg_encoder_deps="libopenjpeg"
1901 libopus_decoder_deps="libopus"
1902 libopus_encoder_deps="libopus"
1903 libopus_encoder_select="audio_frame_queue"
1904 libschroedinger_decoder_deps="libschroedinger"
1905 libschroedinger_encoder_deps="libschroedinger"
1906 libspeex_decoder_deps="libspeex"
1907 libspeex_encoder_deps="libspeex"
1908 libspeex_encoder_select="audio_frame_queue"
1909 libtheora_encoder_deps="libtheora"
1910 libvo_aacenc_encoder_deps="libvo_aacenc"
1911 libvo_aacenc_encoder_select="audio_frame_queue"
1912 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1913 libvorbis_encoder_deps="libvorbis"
1914 libvorbis_encoder_select="audio_frame_queue"
1915 libvpx_vp8_decoder_deps="libvpx"
1916 libvpx_vp8_encoder_deps="libvpx"
1917 libvpx_vp9_decoder_deps="libvpx"
1918 libvpx_vp9_encoder_deps="libvpx"
1919 libwavpack_encoder_deps="libwavpack"
1920 libwebp_encoder_deps="libwebp"
1921 libx264_encoder_deps="libx264"
1922 libx265_encoder_deps="libx265"
1923 libxavs_encoder_deps="libxavs"
1924 libxvid_encoder_deps="libxvid"
1925
1926 # demuxers / muxers
1927 ac3_demuxer_select="ac3_parser"
1928 asf_demuxer_select="riffdec"
1929 asf_muxer_select="riffenc"
1930 asf_stream_muxer_select="asf_muxer"
1931 avi_demuxer_select="riffdec"
1932 avi_muxer_select="riffenc"
1933 avisynth_demuxer_deps="avisynth"
1934 avisynth_demuxer_select="riffdec"
1935 caf_demuxer_select="riffdec"
1936 dirac_demuxer_select="dirac_parser"
1937 dxa_demuxer_select="riffdec"
1938 eac3_demuxer_select="ac3_parser"
1939 f4v_muxer_select="mov_muxer"
1940 flac_demuxer_select="flac_parser"
1941 hds_muxer_select="flv_muxer"
1942 hls_muxer_select="mpegts_muxer"
1943 ipod_muxer_select="mov_muxer"
1944 ismv_muxer_select="mov_muxer"
1945 matroska_audio_muxer_select="matroska_muxer"
1946 matroska_demuxer_select="riffdec"
1947 matroska_demuxer_suggest="bzlib lzo zlib"
1948 matroska_muxer_select="riffenc"
1949 mmf_muxer_select="riffenc"
1950 mov_demuxer_select="riffdec"
1951 mov_demuxer_suggest="zlib"
1952 mov_muxer_select="riffenc rtpenc_chain"
1953 mp3_demuxer_select="mpegaudio_parser"
1954 mp4_muxer_select="mov_muxer"
1955 mpegts_muxer_select="adts_muxer latm_muxer"
1956 mpegtsraw_demuxer_select="mpegts_demuxer"
1957 mxf_d10_muxer_select="mxf_muxer"
1958 nut_muxer_select="riffenc"
1959 nuv_demuxer_select="riffdec"
1960 ogg_demuxer_select="golomb"
1961 psp_muxer_select="mov_muxer"
1962 rtp_demuxer_select="sdp_demuxer"
1963 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1964 rtsp_demuxer_select="http_protocol rtpdec"
1965 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1966 sap_demuxer_select="sdp_demuxer"
1967 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1968 sdp_demuxer_select="rtpdec"
1969 smoothstreaming_muxer_select="ismv_muxer"
1970 spdif_muxer_select="aac_parser"
1971 tak_demuxer_select="tak_parser"
1972 tg2_muxer_select="mov_muxer"
1973 tgp_muxer_select="mov_muxer"
1974 w64_demuxer_select="wav_demuxer"
1975 wav_demuxer_select="riffdec"
1976 wav_muxer_select="riffenc"
1977 webm_muxer_select="riffenc"
1978 wtv_demuxer_select="riffdec"
1979 xmv_demuxer_select="riffdec"
1980 xwma_demuxer_select="riffdec"
1981
1982 # indevs / outdevs
1983 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1984 alsa_outdev_deps="alsa_asoundlib_h"
1985 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1986 dv1394_indev_deps="dv1394"
1987 dv1394_indev_select="dv_demuxer"
1988 fbdev_indev_deps="linux_fb_h"
1989 jack_indev_deps="jack_jack_h pthreads"
1990 libcdio_indev_deps="libcdio"
1991 libdc1394_indev_deps="libdc1394"
1992 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1993 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1994 pulse_indev_deps="libpulse"
1995 sndio_indev_deps="sndio_h"
1996 sndio_outdev_deps="sndio_h"
1997 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1998 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1999 vfwcap_indev_extralibs="-lavicap32"
2000 x11grab_indev_deps="x11grab XShmCreateImage"
2001
2002 # protocols
2003 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2004 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2005 ffrtmpcrypt_protocol_select="tcp_protocol"
2006 ffrtmphttp_protocol_deps="!librtmp_protocol"
2007 ffrtmphttp_protocol_select="http_protocol"
2008 gopher_protocol_select="network"
2009 http_protocol_select="tcp_protocol"
2010 httpproxy_protocol_select="tcp_protocol"
2011 https_protocol_select="tls_protocol"
2012 librtmp_protocol_deps="librtmp"
2013 librtmpe_protocol_deps="librtmp"
2014 librtmps_protocol_deps="librtmp"
2015 librtmpt_protocol_deps="librtmp"
2016 librtmpte_protocol_deps="librtmp"
2017 mmsh_protocol_select="http_protocol"
2018 mmst_protocol_select="network"
2019 rtmp_protocol_deps="!librtmp_protocol"
2020 rtmp_protocol_select="tcp_protocol"
2021 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2022 rtmps_protocol_deps="!librtmp_protocol"
2023 rtmps_protocol_select="tls_protocol"
2024 rtmpt_protocol_select="ffrtmphttp_protocol"
2025 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2026 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2027 rtp_protocol_select="udp_protocol"
2028 sctp_protocol_deps="struct_sctp_event_subscribe"
2029 sctp_protocol_select="network"
2030 srtp_protocol_select="rtp_protocol"
2031 tcp_protocol_select="network"
2032 tls_protocol_deps_any="openssl gnutls"
2033 tls_protocol_select="tcp_protocol"
2034 udp_protocol_select="network"
2035 unix_protocol_deps="sys_un_h"
2036 unix_protocol_select="network"
2037
2038 # filters
2039 blackframe_filter_deps="gpl"
2040 boxblur_filter_deps="gpl"
2041 cropdetect_filter_deps="gpl"
2042 delogo_filter_deps="gpl"
2043 drawtext_filter_deps="libfreetype"
2044 frei0r_filter_deps="frei0r dlopen"
2045 frei0r_filter_extralibs='$ldl'
2046 frei0r_src_filter_deps="frei0r dlopen"
2047 frei0r_src_filter_extralibs='$ldl'
2048 hqdn3d_filter_deps="gpl"
2049 interlace_filter_deps="gpl"
2050 ocv_filter_deps="libopencv"
2051 resample_filter_deps="avresample"
2052 scale_filter_deps="swscale"
2053
2054 # examples
2055 avcodec_example_deps="avcodec avutil"
2056 filter_audio_example_deps="avfilter avutil"
2057 metadata_example_deps="avformat avutil"
2058 output_example_deps="avcodec avformat avutil swscale"
2059 transcode_aac_example_deps="avcodec avformat avresample"
2060
2061 # libraries
2062 avcodec_deps="avutil"
2063 avdevice_deps="avutil avcodec avformat"
2064 avfilter_deps="avutil"
2065 avformat_deps="avutil avcodec"
2066 avresample_deps="avutil"
2067 swscale_deps="avutil"
2068
2069 # programs
2070 avconv_deps="avcodec avfilter avformat avresample swscale"
2071 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2072                fps_filter null_filter resample_filter scale_filter
2073                setpts_filter trim_filter"
2074 avplay_deps="avcodec avformat avresample swscale sdl"
2075 avplay_libs='$sdl_libs'
2076 avplay_select="rdft"
2077 avprobe_deps="avcodec avformat"
2078 avserver_deps="avformat fork !shared"
2079 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2080
2081 # documentation
2082 pod2man_deps="doc"
2083 texi2html_deps="doc"
2084
2085 # default parameters
2086
2087 logfile="config.log"
2088
2089 # installation paths
2090 prefix_default="/usr/local"
2091 bindir_default='${prefix}/bin'
2092 datadir_default='${prefix}/share/avconv'
2093 docdir_default='${prefix}/share/doc/libav'
2094 incdir_default='${prefix}/include'
2095 libdir_default='${prefix}/lib'
2096 mandir_default='${prefix}/share/man'
2097 shlibdir_default="$libdir_default"
2098
2099 # toolchain
2100 ar_default="ar"
2101 cc_default="gcc"
2102 host_cc_default="gcc"
2103 cp_f="cp -f"
2104 ln_s="ln -s -f"
2105 nm_default="nm -g"
2106 objformat="elf"
2107 pkg_config_default=pkg-config
2108 ranlib="ranlib"
2109 strip="strip"
2110 yasmexe="yasm"
2111
2112 nogas=":"
2113
2114 # machine
2115 arch_default=$(uname -m)
2116 cpu="generic"
2117
2118 # OS
2119 target_os_default=$(tolower $(uname -s))
2120 host_os=$target_os_default
2121
2122 # configurable options
2123 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2124
2125 enable asm
2126 enable debug
2127 enable doc
2128 enable optimizations
2129 enable safe_bitstream_reader
2130 enable static
2131 enable swscale_alpha
2132
2133 # By default, enable only those hwaccels that have no external dependencies.
2134 enable dxva2 vdpau
2135
2136 # build settings
2137 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2138 LIBPREF="lib"
2139 LIBSUF=".a"
2140 FULLNAME='$(NAME)$(BUILDSUF)'
2141 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2142 SLIBPREF="lib"
2143 SLIBSUF=".so"
2144 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2145 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2146 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2147 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2148 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2149 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2150
2151 asflags_filter=echo
2152 cflags_filter=echo
2153 ldflags_filter=echo
2154
2155 AS_C='-c'
2156 AS_O='-o $@'
2157 CC_C='-c'
2158 CC_E='-E -o $@'
2159 CC_O='-o $@'
2160 LD_O='-o $@'
2161 LD_LIB='-l%'
2162 LD_PATH='-L'
2163 HOSTCC_C='-c'
2164 HOSTCC_E='-E -o $@'
2165 HOSTCC_O='-o $@'
2166 HOSTLD_O='-o $@'
2167
2168 host_libs='-lm'
2169 host_cflags_filter=echo
2170 host_ldflags_filter=echo
2171
2172 target_path='$(CURDIR)'
2173
2174 # since the object filename is not given with the -MM flag, the compiler
2175 # is only able to print the basename, and we must add the path ourselves
2176 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2177 DEPFLAGS='-MM'
2178
2179 # find source path
2180 if test -f configure; then
2181     source_path=.
2182 else
2183     source_path=$(cd $(dirname "$0"); pwd)
2184     echo "$source_path" | grep -q '[[:blank:]]' &&
2185         die "Out of tree builds are impossible with whitespace in source path."
2186     test -e "$source_path/config.h" &&
2187         die "Out of tree builds are impossible with config.h in source dir."
2188 fi
2189
2190 for v in "$@"; do
2191     r=${v#*=}
2192     l=${v%"$r"}
2193     r=$(sh_quote "$r")
2194     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2195 done
2196
2197 find_things(){
2198     thing=$1
2199     pattern=$2
2200     file=$source_path/$3
2201     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2202 }
2203
2204 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2205 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2206 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2207 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2208 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2209 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2210 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2211 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2212 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2213 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2214 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2215
2216 ALL_COMPONENTS="
2217     $BSF_LIST
2218     $DECODER_LIST
2219     $DEMUXER_LIST
2220     $ENCODER_LIST
2221     $FILTER_LIST
2222     $HWACCEL_LIST
2223     $INDEV_LIST
2224     $MUXER_LIST
2225     $OUTDEV_LIST
2226     $PARSER_LIST
2227     $PROTOCOL_LIST
2228 "
2229
2230 for n in $COMPONENT_LIST; do
2231     v=$(toupper ${n%s})_LIST
2232     eval enable \$$v
2233     eval ${n}_if_any="\$$v"
2234 done
2235
2236 enable $ARCH_EXT_LIST
2237
2238 die_unknown(){
2239     echo "Unknown option \"$1\"."
2240     echo "See $0 --help for available options."
2241     exit 1
2242 }
2243
2244 print_3_columns() {
2245     cat | tr ' ' '\n' | sort | pr -r -3 -t
2246 }
2247
2248 show_list() {
2249     suffix=_$1
2250     shift
2251     echo $* | sed s/$suffix//g | print_3_columns
2252     exit 0
2253 }
2254
2255 rand_list(){
2256     IFS=', '
2257     set -- $*
2258     unset IFS
2259     for thing; do
2260         comp=${thing%:*}
2261         prob=${thing#$comp}
2262         prob=${prob#:}
2263         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2264         echo "prob ${prob:-0.5}"
2265         printf '%s\n' $comp
2266     done
2267 }
2268
2269 do_random(){
2270     action=$1
2271     shift
2272     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2273     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2274 }
2275
2276 for opt do
2277     optval="${opt#*=}"
2278     case "$opt" in
2279         --extra-ldflags=*)
2280             add_ldflags $optval
2281         ;;
2282         --extra-libs=*)
2283             add_extralibs $optval
2284         ;;
2285         --disable-devices)
2286             disable $INDEV_LIST $OUTDEV_LIST
2287         ;;
2288         --enable-debug=*)
2289             debuglevel="$optval"
2290         ;;
2291         --disable-programs)
2292             disable $PROGRAM_LIST
2293         ;;
2294         --disable-everything)
2295             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2296         ;;
2297         --disable-all)
2298             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2299             disable $LIBRARY_LIST $PROGRAM_LIST doc
2300         ;;
2301         --enable-random|--disable-random)
2302             action=${opt%%-random}
2303             do_random ${action#--} $COMPONENT_LIST
2304         ;;
2305         --enable-random=*|--disable-random=*)
2306             action=${opt%%-random=*}
2307             do_random ${action#--} $optval
2308         ;;
2309         --enable-*=*|--disable-*=*)
2310             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2311             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2312             eval list=\$$(toupper $thing)_LIST
2313             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2314             $action $(filter "$name" $list)
2315         ;;
2316         --enable-?*|--disable-?*)
2317             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2318             if is_in $option $COMPONENT_LIST; then
2319                 test $action = disable && action=unset
2320                 eval $action \$$(toupper ${option%s})_LIST
2321             elif is_in $option $CMDLINE_SELECT; then
2322                 $action $option
2323             else
2324                 die_unknown $opt
2325             fi
2326         ;;
2327         --list-*)
2328             NAME="${opt#--list-}"
2329             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2330             NAME=${NAME%s}
2331             eval show_list $NAME \$$(toupper $NAME)_LIST
2332         ;;
2333         --help|-h) show_help
2334         ;;
2335         *)
2336             optname="${opt%%=*}"
2337             optname="${optname#--}"
2338             optname=$(echo "$optname" | sed 's/-/_/g')
2339             if is_in $optname $CMDLINE_SET; then
2340                 eval $optname='$optval'
2341             elif is_in $optname $CMDLINE_APPEND; then
2342                 append $optname "$optval"
2343             else
2344                 die_unknown $opt
2345             fi
2346         ;;
2347     esac
2348 done
2349
2350 disabled logging && logfile=/dev/null
2351
2352 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2353 set >> $logfile
2354
2355 test -n "$cross_prefix" && enable cross_compile
2356
2357 if enabled cross_compile; then
2358     test -n "$arch" && test -n "$target_os" ||
2359         die "Must specify target arch and OS when cross-compiling"
2360 fi
2361
2362 ar_default="${cross_prefix}${ar_default}"
2363 cc_default="${cross_prefix}${cc_default}"
2364 nm_default="${cross_prefix}${nm_default}"
2365 pkg_config_default="${cross_prefix}${pkg_config_default}"
2366 ranlib="${cross_prefix}${ranlib}"
2367 strip="${cross_prefix}${strip}"
2368
2369 sysinclude_default="${sysroot}/usr/include"
2370
2371 case "$toolchain" in
2372     clang-asan)
2373         cc_default="clang"
2374         add_cflags  -fsanitize=address
2375         add_ldflags -fsanitize=address
2376     ;;
2377     clang-tsan)
2378         cc_default="clang"
2379         add_cflags  -fsanitize=thread -pie
2380         add_ldflags -fsanitize=thread -pie
2381     ;;
2382     clang-usan)
2383         cc_default="clang"
2384         add_cflags  -fsanitize=undefined
2385         add_ldflags -fsanitize=undefined
2386     ;;
2387     gcc-asan)
2388         cc_default="gcc"
2389         add_cflags  -fsanitize=address
2390         add_ldflags -fsanitize=address
2391     ;;
2392     gcc-tsan)
2393         cc_default="gcc"
2394         add_cflags  -fsanitize=thread -pie -fPIC
2395         add_ldflags -fsanitize=thread -pie -fPIC
2396     ;;
2397     gcc-usan)
2398         cc_default="gcc"
2399         add_cflags  -fsanitize=undefined
2400         add_ldflags -fsanitize=undefined
2401     ;;
2402     valgrind-massif)
2403         target_exec_default="valgrind"
2404         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2405     ;;
2406     valgrind-memcheck)
2407         target_exec_default="valgrind"
2408         target_exec_args="--track-origins=yes --leak-check=full"
2409     ;;
2410     msvc)
2411         # Check whether the current MSVC version needs the C99 converter.
2412         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2413         # support enough of C99 to build libav. Default to the new
2414         # behaviour if the regexp was unable to match anything, since this
2415         # successfully parses the version number of existing supported
2416         # versions that require the converter (MSVC 2010 and 2012).
2417         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2418         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2419             cc_default="cl"
2420         else
2421             cc_default="c99wrap cl"
2422         fi
2423         ld_default="link"
2424         nm_default="dumpbin -symbols"
2425         ar_default="lib"
2426         target_os_default="win32"
2427         # Use a relative path for TMPDIR. This makes sure all the
2428         # ffconf temp files are written with a relative path, avoiding
2429         # issues with msys/win32 path conversion for MSVC parameters
2430         # such as -Fo<file> or -out:<file>.
2431         TMPDIR=.
2432     ;;
2433     icl)
2434         cc_default="icl"
2435         ld_default="xilink"
2436         nm_default="dumpbin -symbols"
2437         ar_default="xilib"
2438         target_os_default="win32"
2439         TMPDIR=.
2440     ;;
2441     gcov)
2442         add_cflags  -fprofile-arcs -ftest-coverage
2443         add_ldflags -fprofile-arcs -ftest-coverage
2444     ;;
2445     hardened)
2446         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2447         add_ldflags -Wl,-z,relro -Wl,-z,now
2448     ;;
2449     ?*)
2450         die "Unknown toolchain $toolchain"
2451     ;;
2452 esac
2453
2454 set_default arch cc pkg_config sysinclude target_exec target_os
2455 enabled cross_compile || host_cc_default=$cc
2456 set_default host_cc
2457
2458 if ! $pkg_config --version >/dev/null 2>&1; then
2459     warn "$pkg_config not found, library detection may fail."
2460     pkg_config=false
2461 fi
2462
2463 exesuf() {
2464     case $1 in
2465         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2466     esac
2467 }
2468
2469 EXESUF=$(exesuf $target_os)
2470 HOSTEXESUF=$(exesuf $host_os)
2471
2472 # set temporary file name
2473 : ${TMPDIR:=$TEMPDIR}
2474 : ${TMPDIR:=$TMP}
2475 : ${TMPDIR:=/tmp}
2476
2477 if ! check_cmd mktemp -u XXXXXX; then
2478     # simple replacement for missing mktemp
2479     # NOT SAFE FOR GENERAL USE
2480     mktemp(){
2481         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2482     }
2483 fi
2484
2485 tmpfile(){
2486     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2487         (set -C; exec > $tmp) 2>/dev/null ||
2488         die "Unable to create temporary file in $TMPDIR."
2489     append TMPFILES $tmp
2490     eval $1=$tmp
2491 }
2492
2493 trap 'rm -f -- $TMPFILES' EXIT
2494
2495 tmpfile TMPASM .asm
2496 tmpfile TMPC   .c
2497 tmpfile TMPE   $EXESUF
2498 tmpfile TMPH   .h
2499 tmpfile TMPO   .o
2500 tmpfile TMPS   .S
2501 tmpfile TMPSH  .sh
2502 tmpfile TMPV   .ver
2503
2504 unset -f mktemp
2505
2506 chmod +x $TMPE
2507
2508 # make sure we can execute files in $TMPDIR
2509 cat > $TMPSH 2>> $logfile <<EOF
2510 #! /bin/sh
2511 EOF
2512 chmod +x $TMPSH >> $logfile 2>&1
2513 if ! $TMPSH >> $logfile 2>&1; then
2514     cat <<EOF
2515 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2516 variable to another directory and make sure that it is not mounted noexec.
2517 EOF
2518     die "Sanity test failed."
2519 fi
2520
2521 ccc_flags(){
2522     for flag; do
2523         case $flag in
2524             -std=c99)           echo -c99                       ;;
2525             -mcpu=*)            echo -arch ${flag#*=}           ;;
2526             -mieee)             echo -ieee                      ;;
2527             -O*|-fast)          echo $flag                      ;;
2528             -fno-math-errno)    echo -assume nomath_errno       ;;
2529             -g)                 echo -g3                        ;;
2530             -Wall)              echo -msg_enable level2         ;;
2531             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2532             -Wl,*)              echo $flag                      ;;
2533             -f*|-W*)                                            ;;
2534             *)                  echo $flag                      ;;
2535         esac
2536    done
2537 }
2538
2539 cparser_flags(){
2540     for flag; do
2541         case $flag in
2542             -Wno-switch)             echo -Wno-switch-enum ;;
2543             -Wno-format-zero-length) ;;
2544             -Wdisabled-optimization) ;;
2545             -Wno-pointer-sign)       echo -Wno-other ;;
2546             *)                       echo $flag ;;
2547         esac
2548     done
2549 }
2550
2551 msvc_common_flags(){
2552     for flag; do
2553         case $flag in
2554             # In addition to specifying certain flags under the compiler
2555             # specific filters, they must be specified here as well or else the
2556             # generic catch all at the bottom will print the original flag.
2557             -Wall)                ;;
2558             -std=c99)             ;;
2559             # Common flags
2560             -fomit-frame-pointer) ;;
2561             -g)                   echo -Z7 ;;
2562             -fno-math-errno)      ;;
2563             -fno-common)          ;;
2564             -fno-signed-zeros)    ;;
2565             -fPIC)                ;;
2566             -mthumb)              ;;
2567             -march=*)             ;;
2568             -lz)                  echo zlib.lib ;;
2569             -lavifil32)           echo vfw32.lib ;;
2570             -lavicap32)           echo vfw32.lib user32.lib ;;
2571             -l*)                  echo ${flag#-l}.lib ;;
2572             *)                    echo $flag ;;
2573         esac
2574     done
2575 }
2576
2577 msvc_flags(){
2578     msvc_common_flags "$@"
2579     for flag; do
2580         case $flag in
2581             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2582                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2583                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2584                                        -wd4273 ;;
2585         esac
2586     done
2587 }
2588
2589 icl_flags(){
2590     msvc_common_flags "$@"
2591     for flag; do
2592         case $flag in
2593             # Despite what Intel's documentation says -Wall, which is supported
2594             # on Windows, does enable remarks so disable them here.
2595             -Wall)                echo $flag -Qdiag-disable:remark ;;
2596             -std=c99)             echo -Qstd=c99 ;;
2597         esac
2598     done
2599 }
2600
2601 pgi_flags(){
2602     for flag; do
2603         case $flag in
2604             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2605             -fomit-frame-pointer) echo -Mnoframe ;;
2606             -g)                   echo -gopt ;;
2607             *)                    echo $flag ;;
2608         esac
2609     done
2610 }
2611
2612 suncc_flags(){
2613     for flag; do
2614         case $flag in
2615             -march=*|-mcpu=*)
2616                 case "${flag#*=}" in
2617                     native)                   echo -xtarget=native       ;;
2618                     v9|niagara)               echo -xarch=sparc          ;;
2619                     ultrasparc)               echo -xarch=sparcvis       ;;
2620                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2621                     i586|pentium)             echo -xchip=pentium        ;;
2622                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2623                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2624                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2625                     pentium4*)          echo -xtarget=pentium4           ;;
2626                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2627                     *-sse3)             echo -xarch=sse3                 ;;
2628                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2629                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2630                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2631                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2632                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2633                     k8|opteron|athlon64|athlon-fx)
2634                                                echo -xarch=sse2a         ;;
2635                     athlon*)                   echo -xarch=pentium_proa  ;;
2636                 esac
2637                 ;;
2638             -std=c99)             echo -xc99              ;;
2639             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2640             -fPIC)                echo -KPIC -xcode=pic32 ;;
2641             -W*,*)                echo $flag              ;;
2642             -f*-*|-W*|-mimpure-text)                      ;;
2643             -shared)              echo -G                 ;;
2644             *)                    echo $flag              ;;
2645         esac
2646     done
2647 }
2648
2649 tms470_flags(){
2650     for flag; do
2651         case $flag in
2652             -march=*|-mcpu=*)
2653                 case "${flag#*=}" in
2654                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2655                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2656                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2657                     armv6*|arm11*)          echo -mv=6   ;;
2658                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2659                                             echo -mv=5e  ;;
2660                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2661                 esac
2662                 ;;
2663             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2664             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2665             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2666             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2667             -msoft-float)   echo --float_support=vfplib       ;;
2668             -O[0-3]|-mf=*)  echo $flag                        ;;
2669             -g)             echo -g -mn                       ;;
2670             -pds=*)         echo $flag                        ;;
2671             -D*|-I*)        echo $flag                        ;;
2672             --gcc|--abi=*)  echo $flag                        ;;
2673             -me)            echo $flag                        ;;
2674         esac
2675     done
2676 }
2677
2678 probe_cc(){
2679     pfx=$1
2680     _cc=$2
2681
2682     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2683     unset _ld_o _ldflags _ld_lib _ld_path
2684     unset _depflags _DEPCMD _DEPFLAGS
2685     _flags_filter=echo
2686
2687     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2688         _type=llvm_gcc
2689         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2690         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2691         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2692         _cflags_speed='-O3'
2693         _cflags_size='-Os'
2694     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2695         _type=gcc
2696         gcc_version=$($_cc --version | head -n1)
2697         gcc_basever=$($_cc -dumpversion)
2698         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2699         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2700         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2701         if ! $_cc -dumpversion | grep -q '^2\.'; then
2702             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2703         fi
2704         _cflags_speed='-O3'
2705         _cflags_size='-Os'
2706     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2707         _type=icc
2708         _ident=$($_cc --version | head -n1)
2709         _depflags='-MMD'
2710         _cflags_speed='-O3'
2711         _cflags_size='-Os'
2712         _cflags_noopt='-O1'
2713     elif $_cc -v 2>&1 | grep -q xlc; then
2714         _type=xlc
2715         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2716         _cflags_speed='-O5'
2717         _cflags_size='-O5 -qcompact'
2718     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2719         _type=ccc
2720         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2721         _DEPFLAGS='-M'
2722         _cflags_speed='-fast'
2723         _cflags_size='-O1'
2724         _flags_filter=ccc_flags
2725     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2726         test -d "$sysroot" || die "No valid sysroot specified."
2727         _type=armcc
2728         _ident=$($_cc --vsn | head -n1)
2729         armcc_conf="$PWD/armcc.conf"
2730         $_cc --arm_linux_configure                 \
2731              --arm_linux_config_file="$armcc_conf" \
2732              --configure_sysroot="$sysroot"        \
2733              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2734              die "Error creating armcc configuration file."
2735         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2736         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2737         as_default="${cross_prefix}gcc"
2738         _depflags='-MMD'
2739         _cflags_speed='-O3'
2740         _cflags_size='-Os'
2741     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2742         _type=tms470
2743         _ident=$($_cc -version | head -n1 | tr -s ' ')
2744         _flags='--gcc --abi=eabi -me'
2745         _cc_e='-ppl -fe=$@'
2746         _cc_o='-fe=$@'
2747         _depflags='-ppa -ppd=$(@:.o=.d)'
2748         _cflags_speed='-O3 -mf=5'
2749         _cflags_size='-O3 -mf=2'
2750         _flags_filter=tms470_flags
2751     elif $_cc -v 2>&1 | grep -q clang; then
2752         _type=clang
2753         _ident=$($_cc --version | head -n1)
2754         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2755         _cflags_speed='-O3'
2756         _cflags_size='-Os'
2757     elif $_cc -V 2>&1 | grep -q Sun; then
2758         _type=suncc
2759         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2760         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2761         _DEPFLAGS='-xM1 -xc99'
2762         _ldflags='-std=c99'
2763         _cflags_speed='-O5'
2764         _cflags_size='-O5 -xspace'
2765         _flags_filter=suncc_flags
2766     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2767         _type=pathscale
2768         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2769         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2770         _cflags_speed='-O2'
2771         _cflags_size='-Os'
2772         _flags_filter='filter_out -Wdisabled-optimization'
2773     elif $_cc -v 2>&1 | grep -q Open64; then
2774         _type=open64
2775         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2776         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2777         _cflags_speed='-O2'
2778         _cflags_size='-Os'
2779         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2780     elif $_cc -V 2>&1 | grep -q Portland; then
2781         _type=pgi
2782         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2783         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2784         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2785         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2786         _cflags_noopt="-O1"
2787         _flags_filter=pgi_flags
2788     elif $_cc 2>&1 | grep -q Microsoft; then
2789         _type=msvc
2790         _ident=$($cc 2>&1 | head -n1)
2791         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2792         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2793         _cflags_speed="-O2"
2794         _cflags_size="-O1"
2795         if $_cc 2>&1 | grep -q Linker; then
2796             _ld_o='-out:$@'
2797         else
2798             _ld_o='-Fe$@'
2799         fi
2800         _cc_o='-Fo$@'
2801         _cc_e='-P -Fi$@'
2802         _flags_filter=msvc_flags
2803         _ld_lib='lib%.a'
2804         _ld_path='-libpath:'
2805         _flags='-nologo'
2806         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2807         if [ $pfx = hostcc ]; then
2808             append _cflags -Dsnprintf=_snprintf
2809         fi
2810     elif $_cc 2>&1 | grep -q Intel; then
2811         _type=icl
2812         _ident=$($cc 2>&1 | head -n1)
2813         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2814         # Not only is O3 broken on 13.x+ but it is slower on all previous
2815         # versions (tested) as well.
2816         _cflags_speed="-O2"
2817         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2818         if $_cc 2>&1 | grep -q Linker; then
2819             _ld_o='-out:$@'
2820         else
2821             _ld_o='-Fe$@'
2822         fi
2823         _cc_o='-Fo$@'
2824         _cc_e='-P'
2825         _flags_filter=icl_flags
2826         _ld_lib='lib%.a'
2827         _ld_path='-libpath:'
2828         # -Qdiag-error to make icl error when seeing certain unknown arguments
2829         _flags='-nologo -Qdiag-error:4044,10157'
2830         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2831         # with MSVC which enables it by default.
2832         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2833         if [ $pfx = hostcc ]; then
2834             append _cflags -Dsnprintf=_snprintf
2835         fi
2836     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2837         _type=cparser
2838         _ident=$($_cc --version | head -n1)
2839         _depflags='-MMD'
2840         _cflags_speed='-O4'
2841         _cflags_size='-O2'
2842         _flags_filter=cparser_flags
2843     fi
2844
2845     eval ${pfx}_type=\$_type
2846     eval ${pfx}_ident=\$_ident
2847 }
2848
2849 set_ccvars(){
2850     eval ${1}_C=\${_cc_c-\${${1}_C}}
2851     eval ${1}_E=\${_cc_e-\${${1}_E}}
2852     eval ${1}_O=\${_cc_o-\${${1}_O}}
2853
2854     if [ -n "$_depflags" ]; then
2855         eval ${1}_DEPFLAGS=\$_depflags
2856     else
2857         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2858         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2859         eval DEP${1}FLAGS=\$_flags
2860     fi
2861 }
2862
2863 probe_cc cc "$cc"
2864 cflags_filter=$_flags_filter
2865 cflags_speed=$_cflags_speed
2866 cflags_size=$_cflags_size
2867 cflags_noopt=$_cflags_noopt
2868 add_cflags $_flags $_cflags
2869 cc_ldflags=$_ldflags
2870 set_ccvars CC
2871
2872 probe_cc hostcc "$host_cc"
2873 host_cflags_filter=$_flags_filter
2874 add_host_cflags  $_flags $_cflags
2875 set_ccvars HOSTCC
2876
2877 test -n "$cc_type" && enable $cc_type ||
2878     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2879
2880 : ${as_default:=$cc}
2881 : ${dep_cc_default:=$cc}
2882 : ${ld_default:=$cc}
2883 : ${host_ld_default:=$host_cc}
2884 set_default ar as dep_cc ld host_ld
2885
2886 probe_cc as "$as"
2887 asflags_filter=$_flags_filter
2888 add_asflags $_flags $_cflags
2889 set_ccvars AS
2890
2891 probe_cc ld "$ld"
2892 ldflags_filter=$_flags_filter
2893 add_ldflags $_flags $_ldflags
2894 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2895 LD_O=${_ld_o-$LD_O}
2896 LD_LIB=${_ld_lib-$LD_LIB}
2897 LD_PATH=${_ld_path-$LD_PATH}
2898
2899 probe_cc hostld "$host_ld"
2900 host_ldflags_filter=$_flags_filter
2901 add_host_ldflags $_flags $_ldflags
2902 HOSTLD_O=${_ld_o-$HOSTLD_O}
2903
2904 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2905     probe_cc depcc "$dep_cc"
2906     CCDEP=${_DEPCMD:-$DEPCMD}
2907     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2908     DEPCCFLAGS=$_flags
2909 fi
2910
2911 if $ar 2>&1 | grep -q Microsoft; then
2912     arflags="-nologo"
2913     ar_o='-out:$@'
2914 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2915     arflags="rq"
2916     ar_o='$@'
2917 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2918     arflags='-Xany -r -c'
2919     ar_o='$@'
2920 else
2921     arflags="rc"
2922     ar_o='$@'
2923 fi
2924
2925 add_cflags $extra_cflags
2926 add_asflags $extra_cflags
2927
2928 if test -n "$sysroot"; then
2929     case "$cc_type" in
2930         gcc|llvm_gcc|clang)
2931             add_cppflags --sysroot="$sysroot"
2932             add_ldflags --sysroot="$sysroot"
2933         ;;
2934         tms470)
2935             add_cppflags -I"$sysinclude"
2936             add_ldflags  --sysroot="$sysroot"
2937         ;;
2938     esac
2939 fi
2940
2941 if test "$cpu" = host; then
2942     enabled cross_compile &&
2943         die "--cpu=host makes no sense when cross-compiling."
2944
2945     case "$cc_type" in
2946         gcc|llvm_gcc)
2947             check_native(){
2948                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2949                 sed -n "/cc1.*$1=/{
2950                             s/.*$1=\\([^ ]*\\).*/\\1/
2951                             p
2952                             q
2953                         }" $TMPE
2954             }
2955             cpu=$(check_native -march || check_native -mcpu)
2956         ;;
2957     esac
2958
2959     test "${cpu:-host}" = host &&
2960         die "--cpu=host not supported with compiler $cc"
2961 fi
2962
2963 # Deal with common $arch aliases
2964 case "$arch" in
2965     aarch64|arm64)
2966         arch="aarch64"
2967     ;;
2968     arm*)
2969         arch="arm"
2970     ;;
2971     mips*|IP*)
2972         arch="mips"
2973     ;;
2974     parisc*|hppa*)
2975         arch="parisc"
2976     ;;
2977     "Power Macintosh"|ppc*|powerpc*)
2978         arch="ppc"
2979     ;;
2980     s390|s390x)
2981         arch="s390"
2982     ;;
2983     sh4|sh)
2984         arch="sh4"
2985     ;;
2986     sun4u|sparc*)
2987         arch="sparc"
2988     ;;
2989     tilegx|tile-gx)
2990         arch="tilegx"
2991     ;;
2992     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2993         arch="x86"
2994     ;;
2995 esac
2996
2997 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2998 enable $arch
2999
3000 # Add processor-specific flags
3001 if enabled aarch64; then
3002
3003     case $cpu in
3004         armv*)
3005             cpuflags="-march=$cpu"
3006         ;;
3007         *)
3008             cpuflags="-mcpu=$cpu"
3009         ;;
3010     esac
3011
3012 elif enabled alpha; then
3013
3014     cpuflags="-mcpu=$cpu"
3015
3016 elif enabled arm; then
3017
3018     check_arm_arch() {
3019         check_cpp_condition stddef.h \
3020             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3021             $cpuflags
3022     }
3023
3024     probe_arm_arch() {
3025         if   check_arm_arch 4;        then echo armv4;
3026         elif check_arm_arch 4T;       then echo armv4t;
3027         elif check_arm_arch 5;        then echo armv5;
3028         elif check_arm_arch 5E;       then echo armv5e;
3029         elif check_arm_arch 5T;       then echo armv5t;
3030         elif check_arm_arch 5TE;      then echo armv5te;
3031         elif check_arm_arch 5TEJ;     then echo armv5te;
3032         elif check_arm_arch 6;        then echo armv6;
3033         elif check_arm_arch 6J;       then echo armv6j;
3034         elif check_arm_arch 6K;       then echo armv6k;
3035         elif check_arm_arch 6Z;       then echo armv6z;
3036         elif check_arm_arch 6ZK;      then echo armv6zk;
3037         elif check_arm_arch 6T2;      then echo armv6t2;
3038         elif check_arm_arch 7;        then echo armv7;
3039         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3040         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3041         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3042         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3043         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3044         fi
3045     }
3046
3047     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3048
3049     case $cpu in
3050         armv*)
3051             cpuflags="-march=$cpu"
3052             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3053         ;;
3054         *)
3055             cpuflags="-mcpu=$cpu"
3056             case $cpu in
3057                 cortex-a*)                               subarch=armv7a  ;;
3058                 cortex-r*)                               subarch=armv7r  ;;
3059                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3060                 arm11*)                                  subarch=armv6   ;;
3061                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3062                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3063                 *)                             subarch=$(probe_arm_arch) ;;
3064             esac
3065         ;;
3066     esac
3067
3068     case "$subarch" in
3069         armv5t*)    enable fast_clz                ;;
3070         armv[6-8]*) enable fast_clz fast_unaligned ;;
3071     esac
3072
3073 elif enabled avr32; then
3074
3075     case $cpu in
3076         ap7[02]0[0-2])
3077             subarch="avr32_ap"
3078             cpuflags="-mpart=$cpu"
3079         ;;
3080         ap)
3081             subarch="avr32_ap"
3082             cpuflags="-march=$cpu"
3083         ;;
3084         uc3[ab]*)
3085             subarch="avr32_uc"
3086             cpuflags="-mcpu=$cpu"
3087         ;;
3088         uc)
3089             subarch="avr32_uc"
3090             cpuflags="-march=$cpu"
3091         ;;
3092     esac
3093
3094 elif enabled bfin; then
3095
3096     cpuflags="-mcpu=$cpu"
3097
3098 elif enabled mips; then
3099
3100     cpuflags="-march=$cpu"
3101
3102 elif enabled ppc; then
3103
3104     case $(tolower $cpu) in
3105         601|ppc601|powerpc601)
3106             cpuflags="-mcpu=601"
3107             disable altivec
3108         ;;
3109         603*|ppc603*|powerpc603*)
3110             cpuflags="-mcpu=603"
3111             disable altivec
3112         ;;
3113         604*|ppc604*|powerpc604*)
3114             cpuflags="-mcpu=604"
3115             disable altivec
3116         ;;
3117         g3|75*|ppc75*|powerpc75*)
3118             cpuflags="-mcpu=750"
3119             disable altivec
3120         ;;
3121         g4|745*|ppc745*|powerpc745*)
3122             cpuflags="-mcpu=7450"
3123         ;;
3124         74*|ppc74*|powerpc74*)
3125             cpuflags="-mcpu=7400"
3126         ;;
3127         g5|970|ppc970|powerpc970)
3128             cpuflags="-mcpu=970"
3129         ;;
3130         power[3-7]*)
3131             cpuflags="-mcpu=$cpu"
3132         ;;
3133         cell)
3134             cpuflags="-mcpu=cell"
3135             enable ldbrx
3136         ;;
3137         e500mc)
3138             cpuflags="-mcpu=e500mc"
3139             disable altivec
3140         ;;
3141         e500v2)
3142             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3143             disable altivec
3144         ;;
3145         e500)
3146             cpuflags="-mcpu=8540 -mhard-float"
3147             disable altivec
3148         ;;
3149     esac
3150
3151 elif enabled sparc; then
3152
3153     case $cpu in
3154         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3155             cpuflags="-mcpu=$cpu"
3156             disable vis
3157         ;;
3158         ultrasparc*|niagara[234])
3159             cpuflags="-mcpu=$cpu"
3160         ;;
3161     esac
3162
3163 elif enabled x86; then
3164
3165     case $cpu in
3166         i[345]86|pentium)
3167             cpuflags="-march=$cpu"
3168             disable mmx
3169         ;;
3170         # targets that do NOT support nopl and conditional mov (cmov)
3171         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3172             cpuflags="-march=$cpu"
3173             disable i686
3174         ;;
3175         # targets that do support nopl and conditional mov (cmov)
3176         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3177             cpuflags="-march=$cpu"
3178             enable i686
3179             enable fast_cmov
3180         ;;
3181         # targets that do support conditional mov but on which it's slow
3182         pentium4|pentium4m|prescott|nocona)
3183             cpuflags="-march=$cpu"
3184             enable i686
3185             disable fast_cmov
3186         ;;
3187     esac
3188
3189 fi
3190
3191 if [ "$cpu" != generic ]; then
3192     add_cflags  $cpuflags
3193     add_asflags $cpuflags
3194 fi
3195
3196 # compiler sanity check
3197 check_exec <<EOF
3198 int main(void){ return 0; }
3199 EOF
3200 if test "$?" != 0; then
3201     echo "$cc is unable to create an executable file."
3202     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3203         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3204         echo "Only do this if you know what cross compiling means."
3205     fi
3206     die "C compiler test failed."
3207 fi
3208
3209 add_cppflags -D_ISOC99_SOURCE
3210 check_cflags -std=c99
3211 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3212 #include <stdlib.h>
3213 EOF
3214 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3215 #include <stdlib.h>
3216 EOF
3217
3218 add_host_cppflags -D_ISOC99_SOURCE
3219 check_host_cflags -std=c99
3220 check_host_cflags -Wall
3221 check_host_cflags -O3
3222
3223 check_64bit(){
3224     arch32=$1
3225     arch64=$2
3226     expr=$3
3227     check_code cc "" "int test[2*($expr) - 1]" &&
3228         subarch=$arch64 || subarch=$arch32
3229 }
3230
3231 case "$arch" in
3232     aarch64|alpha|ia64)
3233         spic=$shared
3234     ;;
3235     mips)
3236         check_64bit mips mips64 '_MIPS_SIM > 1'
3237         spic=$shared
3238     ;;
3239     parisc)
3240         check_64bit parisc parisc64 'sizeof(void *) > 4'
3241         spic=$shared
3242     ;;
3243     ppc)
3244         check_64bit ppc ppc64 'sizeof(void *) > 4'
3245         spic=$shared
3246     ;;
3247     s390)
3248         check_64bit s390 s390x 'sizeof(void *) > 4'
3249         spic=$shared
3250     ;;
3251     sparc)
3252         check_64bit sparc sparc64 'sizeof(void *) > 4'
3253         spic=$shared
3254     ;;
3255     x86)
3256         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3257         if test "$subarch" = "x86_64"; then
3258             spic=$shared
3259         fi
3260     ;;
3261 esac
3262
3263 enable $subarch
3264 enabled spic && enable_weak pic
3265
3266 # OS specific
3267 case $target_os in
3268     aix)
3269         SHFLAGS=-shared
3270         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3271         enabled shared && add_ldflags -Wl,-brtl
3272         ;;
3273     haiku)
3274         prefix_default="/boot/common"
3275         network_extralibs="-lnetwork"
3276         host_libs=
3277         ;;
3278     sunos)
3279         SHFLAGS='-shared -Wl,-h,$$(@F)'
3280         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3281         network_extralibs="-lsocket -lnsl"
3282         # When using suncc to build, the Solaris linker will mark
3283         # an executable with each instruction set encountered by
3284         # the Solaris assembler.  As our libraries contain their own
3285         # guards for processor-specific code, instead suppress
3286         # generation of the HWCAPS ELF section on Solaris x86 only.
3287         enabled_all suncc x86 &&
3288             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3289             add_ldflags -Wl,-M,mapfile
3290         nm_default='nm -P -g'
3291         ;;
3292     netbsd)
3293         disable symver
3294         oss_indev_extralibs="-lossaudio"
3295         oss_outdev_extralibs="-lossaudio"
3296         ;;
3297     openbsd|bitrig)
3298         disable symver
3299         SHFLAGS='-shared'
3300         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3301         SLIB_INSTALL_LINKS=
3302         oss_indev_extralibs="-lossaudio"
3303         oss_outdev_extralibs="-lossaudio"
3304         ;;
3305     dragonfly)
3306         disable symver
3307         ;;
3308     freebsd)
3309         ;;
3310     bsd/os)
3311         add_extralibs -lpoll -lgnugetopt
3312         ;;
3313     darwin)
3314         gas="gas-preprocessor.pl $cc"
3315         enabled ppc && add_asflags -force_cpusubtype_ALL
3316         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3317         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3318         add_ldflags -Wl,-dynamic,-search_paths_first
3319         SLIBSUF=".dylib"
3320         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3321         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3322         objformat="macho"
3323         enabled x86_64 && objformat="macho64"
3324         enabled_any pic shared ||
3325             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3326         ;;
3327     mingw32*)
3328         if test $target_os = "mingw32ce"; then
3329             disable network
3330         else
3331             target_os=mingw32
3332         fi
3333         LIBTARGET=i386
3334         if enabled x86_64; then
3335             LIBTARGET="i386:x86-64"
3336         elif enabled arm; then
3337             LIBTARGET=arm-wince
3338         fi
3339         check_ldflags -Wl,--nxcompat
3340         check_ldflags -Wl,--dynamicbase
3341         shlibdir_default="$bindir_default"
3342         SLIBPREF=""
3343         SLIBSUF=".dll"
3344         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3345         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3346         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3347         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3348         SLIB_INSTALL_LINKS=
3349         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3350         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3351         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3352         objformat="win32"
3353         dlltool="${cross_prefix}dlltool"
3354         ranlib=:
3355         enable dos_paths
3356         ;;
3357     win32|win64)
3358         disable symver
3359         if enabled shared; then
3360             # Link to the import library instead of the normal static library
3361             # for shared libs.
3362             LD_LIB='%.lib'
3363             # Cannot build both shared and static libs with MSVC or icl.
3364             disable static
3365         fi
3366         shlibdir_default="$bindir_default"
3367         SLIBPREF=""
3368         SLIBSUF=".dll"
3369         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3370         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3371         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3372         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3373         SLIB_INSTALL_LINKS=
3374         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3375         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3376         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3377         objformat="win32"
3378         ranlib=:
3379         enable dos_paths
3380         ;;
3381     cygwin*)
3382         target_os=cygwin
3383         shlibdir_default="$bindir_default"
3384         SLIBPREF="cyg"
3385         SLIBSUF=".dll"
3386         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3387         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3388         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3389         SLIB_INSTALL_LINKS=
3390         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3391         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3392         objformat="win32"
3393         enable dos_paths
3394         ;;
3395     *-dos|freedos|opendos)
3396         network_extralibs="-lsocket"
3397         objformat="coff"
3398         enable dos_paths
3399         add_cppflags -U__STRICT_ANSI__
3400         ;;
3401     linux)
3402         enable dv1394
3403         ;;
3404     irix*)
3405         target_os=irix
3406         ranlib="echo ignoring ranlib"
3407         ;;
3408     os/2*)
3409         ln_s="cp -f"
3410         objformat="aout"
3411         add_cppflags -D_GNU_SOURCE
3412         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3413         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3414         LIBSUF="_s.a"
3415         SLIBPREF=""
3416         SLIBSUF=".dll"
3417         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3418         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3419         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3420             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3421             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3422             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3423             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3424             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3425         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3426             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3427         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3428         enable dos_paths
3429         ;;
3430     gnu/kfreebsd)
3431         add_cppflags -D_BSD_SOURCE
3432         ;;
3433     gnu)
3434         ;;
3435     qnx)
3436         add_cppflags -D_QNX_SOURCE
3437         network_extralibs="-lsocket"
3438         ;;
3439     symbian)
3440         SLIBSUF=".dll"
3441         enable dos_paths
3442         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3443         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3444         add_ldflags -Wl,--target1-abs,--no-undefined \
3445                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3446                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3447         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3448                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3449                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3450         ;;
3451     osf1)
3452         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3453         ;;
3454     minix)
3455         ;;
3456     plan9)
3457         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3458                      -D_REENTRANT_SOURCE        \
3459                      -D_RESEARCH_SOURCE         \
3460                      -DFD_SETSIZE=96            \
3461                      -DHAVE_SOCK_OPTS
3462         add_compat strtod.o strtod=avpriv_strtod
3463         network_extralibs='-lbsd'
3464         exeobjs=compat/plan9/main.o
3465         disable avserver
3466         cp_f='cp'
3467         ;;
3468     none)
3469         ;;
3470     *)
3471         die "Unknown OS '$target_os'."
3472         ;;
3473 esac
3474
3475 # determine libc flavour
3476
3477 probe_libc(){
3478     pfx=$1
3479     pfx_no_=${pfx%_}
3480     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3481     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3482         eval ${pfx}libc_type=uclibc
3483         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3484     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3485         eval ${pfx}libc_type=glibc
3486         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3487     # MinGW headers can be installed on Cygwin, so check for newlib first.
3488     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3489         eval ${pfx}libc_type=newlib
3490         add_${pfx}cppflags -U__STRICT_ANSI__
3491     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3492     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3493         eval ${pfx}libc_type=mingw64
3494         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3495         eval test \$${pfx_no_}cc_type = "gcc" &&
3496             add_${pfx}cppflags -D__printf__=__gnu_printf__
3497     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3498          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3499         eval ${pfx}libc_type=mingw32
3500         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3501             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3502             die "ERROR: MinGW32 runtime version must be >= 3.15."
3503         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3504         eval test \$${pfx_no_}cc_type = "gcc" &&
3505             add_${pfx}cppflags -D__printf__=__gnu_printf__
3506     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3507         eval ${pfx}libc_type=msvcrt
3508         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3509         # 0x601 by default unless something else is set by the user.
3510         # This can easily lead to us detecting functions only present
3511         # in such new versions and producing binaries requiring windows 7.0.
3512         # Therefore explicitly set the default to XP unless the user has
3513         # set something else on the command line.
3514         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3515             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3516     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3517         eval ${pfx}libc_type=klibc
3518     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3519         eval ${pfx}libc_type=bionic
3520     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3521         eval ${pfx}libc_type=solaris
3522         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3523     fi
3524 }
3525
3526 probe_libc
3527 test -n "$libc_type" && enable libc_$libc_type
3528 probe_libc host_
3529 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3530
3531 case $libc_type in
3532     bionic)
3533         add_compat strtod.o strtod=avpriv_strtod
3534         ;;
3535     msvcrt)
3536         add_compat strtod.o strtod=avpriv_strtod
3537         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3538                                      _snprintf=avpriv_snprintf  \
3539                                      vsnprintf=avpriv_vsnprintf
3540         ;;
3541 esac
3542
3543 # hacks for compiler/libc/os combinations
3544
3545 if enabled_all tms470 libc_glibc; then
3546     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3547     add_cppflags -D__USER_LABEL_PREFIX__=
3548     add_cppflags -D__builtin_memset=memset
3549     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3550     add_cflags   -pds=48    # incompatible redefinition of macro
3551 fi
3552
3553 if enabled_all ccc libc_glibc; then
3554     add_ldflags -Wl,-z,now  # calls to libots crash without this
3555 fi
3556
3557 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3558     add_cppflags '-I\$(SRC_PATH)/compat/float'
3559
3560 esc(){
3561     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3562 }
3563
3564 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3565
3566 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3567
3568 set_default $PATHS_LIST
3569 set_default nm
3570
3571 # we need to build at least one lib type
3572 if ! enabled_any static shared; then
3573     cat <<EOF
3574 At least one library type must be built.
3575 Specify --enable-static to build the static libraries or --enable-shared to
3576 build the shared libraries as well. To only build the shared libraries specify
3577 --disable-static in addition to --enable-shared.
3578 EOF
3579     exit 1;
3580 fi
3581
3582 die_license_disabled() {
3583     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3584 }
3585
3586 die_license_disabled gpl libcdio
3587 die_license_disabled gpl libx264
3588 die_license_disabled gpl libx265
3589 die_license_disabled gpl libxavs
3590 die_license_disabled gpl libxvid
3591 die_license_disabled gpl x11grab
3592
3593 die_license_disabled nonfree libfaac
3594 die_license_disabled nonfree libfdk_aac
3595 die_license_disabled nonfree openssl
3596
3597 die_license_disabled version3 libopencore_amrnb
3598 die_license_disabled version3 libopencore_amrwb
3599 die_license_disabled version3 libvo_aacenc
3600 die_license_disabled version3 libvo_amrwbenc
3601
3602 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3603
3604 disabled optimizations || check_cflags -fomit-frame-pointer
3605
3606 enable_weak_pic() {
3607     disabled pic && return
3608     enable pic
3609     add_cppflags -DPIC
3610     case "$target_os" in
3611     mingw*|cygwin*)
3612         ;;
3613     *)
3614         add_cflags -fPIC
3615         ;;
3616     esac
3617     add_asflags  -fPIC
3618 }
3619
3620 enabled pic && enable_weak_pic
3621
3622 check_cc <<EOF || die "Symbol mangling check failed."
3623 int ff_extern;
3624 EOF
3625 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3626 extern_prefix=${sym%%ff_extern*}
3627
3628 check_cc <<EOF && enable_weak inline_asm
3629 void foo(void) { __asm__ volatile ("" ::); }
3630 EOF
3631
3632 _restrict=
3633 for restrict_keyword in restrict __restrict__ __restrict; do
3634     check_cc <<EOF && _restrict=$restrict_keyword && break
3635 void foo(char * $restrict_keyword p);
3636 EOF
3637 done
3638
3639 check_cc <<EOF && enable pragma_deprecated
3640 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3641 EOF
3642
3643 check_cc <<EOF && enable attribute_packed
3644 struct { int x; } __attribute__((packed)) x;
3645 EOF
3646
3647 check_cc <<EOF && enable attribute_may_alias
3648 union { int x; } __attribute__((may_alias)) x;
3649 EOF
3650
3651 check_cc <<EOF || die "endian test failed"
3652 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3653 EOF
3654 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3655
3656 check_inline_asm inline_asm_labels '"1:\n"'
3657
3658 if enabled aarch64; then
3659     # internal assembler in clang 3.3 does not support this instruction
3660     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3661     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3662
3663     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3664
3665 elif enabled alpha; then
3666
3667     check_cflags -mieee
3668
3669 elif enabled arm; then
3670
3671     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3672     enabled thumb && check_cflags -mthumb || check_cflags -marm
3673     nogas=die
3674
3675     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3676         enable vfp_args
3677     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3678         case "${cross_prefix:-$cc}" in
3679             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3680             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3681 __asm__ (".eabi_attribute 28, 1");
3682 int main(void) { return 0; }
3683 EOF
3684         esac
3685         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3686     fi
3687
3688     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3689     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3690     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3691     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3692     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3693     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3694
3695     [ $target_os = linux ] ||
3696         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3697             $ARCH_EXT_LIST_ARM
3698
3699     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3700
3701     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3702
3703 elif enabled mips; then
3704
3705     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3706
3707 elif enabled parisc; then
3708
3709     if enabled gcc; then
3710         case $($cc -dumpversion) in
3711             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3712         esac
3713     fi
3714
3715 elif enabled ppc; then
3716
3717     enable local_aligned_8 local_aligned_16
3718
3719     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3720     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3721     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3722     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3723
3724     # AltiVec flags: The FSF version of GCC differs from the Apple version
3725     if enabled altivec; then
3726         nogas=warn
3727         check_cflags -maltivec -mabi=altivec &&
3728         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3729         check_cflags -faltivec
3730
3731         # check if our compiler supports Motorola AltiVec C API
3732         check_cc <<EOF || disable altivec
3733 $inc_altivec_h
3734 int main(void) {
3735     vector signed int v1 = (vector signed int) { 0 };
3736     vector signed int v2 = (vector signed int) { 1 };
3737     v1 = vec_add(v1, v2);
3738     return 0;
3739 }
3740 EOF
3741
3742         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3743     fi
3744
3745 elif enabled sparc; then
3746
3747     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3748
3749 elif enabled x86; then
3750
3751     check_builtin rdtsc    intrin.h   "__rdtsc()"
3752     check_builtin mm_empty mmintrin.h "_mm_empty()"
3753
3754     enable local_aligned_8 local_aligned_16
3755
3756     # check whether EBP is available on x86
3757     # As 'i' is stored on the stack, this program will crash
3758     # if the base pointer is used to access it because the
3759     # base pointer is cleared in the inline assembly code.
3760     check_exec_crash <<EOF && enable ebp_available
3761 volatile int i=0;
3762 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3763 return i;
3764 EOF
3765
3766     # check whether EBX is available on x86
3767     check_inline_asm ebx_available '""::"b"(0)' &&
3768         check_inline_asm ebx_available '"":::"%ebx"'
3769
3770     # check whether xmm clobbers are supported
3771     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3772
3773     # check whether binutils is new enough to compile SSSE3/MMXEXT
3774     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3775     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3776
3777     if ! disabled_any asm mmx yasm; then
3778         if check_cmd $yasmexe --version; then
3779             enabled x86_64 && yasm_extra="-m amd64"
3780             yasm_debug="-g dwarf2"
3781         elif check_cmd nasm -v; then
3782             yasmexe=nasm
3783             yasm_debug="-g -F dwarf"
3784             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3785         fi
3786
3787         YASMFLAGS="-f $objformat $yasm_extra"
3788         enabled pic               && append YASMFLAGS "-DPIC"
3789         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3790         case "$objformat" in
3791             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3792         esac
3793
3794         check_yasm "movbe ecx, [5]" && enable yasm ||
3795             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3796         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3797         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3798         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3799         check_yasm "CPU amdnop" || disable cpunop
3800     fi
3801
3802     case "$cpu" in
3803         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3804             disable fast_clz
3805         ;;
3806     esac
3807
3808 fi
3809
3810 if enabled asm; then
3811     as=${gas:=$as}
3812     check_as <<EOF && enable gnu_as || \
3813         $nogas "GNU assembler not found, install gas-preprocessor"
3814 .macro m n
3815 \n: .int 0
3816 .endm
3817 m x
3818 EOF
3819 fi
3820
3821 check_ldflags -Wl,--as-needed
3822
3823 if check_func dlopen; then
3824     ldl=
3825 elif check_func dlopen -ldl; then
3826     ldl=-ldl
3827 fi
3828
3829 if ! disabled network; then
3830     check_type "sys/types.h sys/socket.h" socklen_t
3831     check_type netdb.h "struct addrinfo"
3832     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3833     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3834     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3835     check_type netinet/in.h "struct sockaddr_in6"
3836     check_type poll.h "struct pollfd"
3837     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3838     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3839     check_type netinet/sctp.h "struct sctp_event_subscribe"
3840     check_func getaddrinfo $network_extralibs
3841     check_func getservbyport $network_extralibs
3842     check_func inet_aton $network_extralibs
3843     # Prefer arpa/inet.h over winsock2
3844     if check_header arpa/inet.h ; then
3845         check_func closesocket
3846     elif check_header winsock2.h ; then
3847         check_func_headers winsock2.h closesocket -lws2 &&
3848             network_extralibs="-lws2" ||
3849         { check_func_headers winsock2.h closesocket -lws2_32 &&
3850             network_extralibs="-lws2_32"; } || disable winsock2_h network
3851         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3852         check_type ws2tcpip.h socklen_t
3853         check_type ws2tcpip.h "struct addrinfo"
3854         check_type ws2tcpip.h "struct group_source_req"
3855         check_type ws2tcpip.h "struct ip_mreq_source"
3856         check_type ws2tcpip.h "struct ipv6_mreq"
3857         check_type winsock2.h "struct pollfd"
3858         check_type ws2tcpip.h "struct sockaddr_in6"
3859         check_type ws2tcpip.h "struct sockaddr_storage"
3860         check_struct winsock2.h "struct sockaddr" sa_len
3861     else
3862         disable network
3863     fi
3864 fi
3865
3866 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3867 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3868
3869 check_func  fcntl
3870 check_func  fork
3871 check_func_headers stdlib.h getenv
3872 check_func  gethrtime
3873 check_func  getopt
3874 check_func  getrusage
3875 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3876 check_func  gettimeofday
3877 check_func  isatty
3878 check_func  localtime_r
3879 check_func  mach_absolute_time
3880 check_func  ${malloc_prefix}memalign            && enable memalign
3881 check_func  mkstemp
3882 check_func  mmap
3883 check_func  mprotect
3884 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3885 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3886 check_func  setrlimit
3887 check_func  strerror_r
3888 check_func  strptime
3889 check_func  sched_getaffinity
3890 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3891 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3892 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3893 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3894 check_func  sysconf
3895 check_func  sysctl
3896 check_func  usleep
3897 check_func_headers io.h setmode
3898 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3899 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3900 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3901 check_func_headers windows.h GetProcessAffinityMask
3902 check_func_headers windows.h GetProcessTimes
3903 check_func_headers windows.h GetSystemTimeAsFileTime
3904 check_func_headers windows.h MapViewOfFile
3905 check_func_headers windows.h SetConsoleTextAttribute
3906 check_func_headers windows.h Sleep
3907 check_func_headers windows.h VirtualAlloc
3908
3909 check_header direct.h
3910 check_header dlfcn.h
3911 check_header dxva.h
3912 check_header dxva2api.h
3913 check_header io.h
3914 check_header mach/mach_time.h
3915 check_header malloc.h
3916 check_header poll.h
3917 check_header sys/mman.h
3918 check_header sys/param.h
3919 check_header sys/resource.h
3920 check_header sys/select.h
3921 check_header sys/time.h
3922 check_header sys/un.h
3923 check_header unistd.h
3924 check_header vdpau/vdpau.h
3925 check_header vdpau/vdpau_x11.h
3926 check_header VideoDecodeAcceleration/VDADecoder.h
3927 check_header windows.h
3928 check_header X11/extensions/XvMClib.h
3929
3930 if ! disabled w32threads && ! enabled pthreads; then
3931     check_func_headers "windows.h process.h" _beginthreadex &&
3932         enable w32threads || disable w32threads
3933 fi
3934
3935 # check for some common methods of building with pthread support
3936 # do this before the optional library checks as some of them require pthreads
3937 if ! disabled pthreads && ! enabled w32threads; then
3938     enable pthreads
3939     if check_func pthread_join -pthread; then
3940         add_cflags -pthread
3941         add_extralibs -pthread
3942     elif check_func pthread_join -pthreads; then
3943         add_cflags -pthreads
3944         add_extralibs -pthreads
3945     elif check_func pthread_join -lpthreadGC2; then
3946         add_extralibs -lpthreadGC2
3947     elif check_lib pthread.h pthread_join -lpthread; then
3948         :
3949     elif ! check_func pthread_join; then
3950         disable pthreads
3951     fi
3952 fi
3953
3954 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3955 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3956
3957 check_lib math.h sin -lm && LIBM="-lm"
3958 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3959
3960 atan2f_args=2
3961 ldexpf_args=2
3962 powf_args=2
3963
3964 for func in $MATH_FUNCS; do
3965     eval check_mathfunc $func \${${func}_args:-1}
3966 done
3967
3968 # these are off by default, so fail if requested and not available
3969 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
3970                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
3971                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
3972 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3973 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3974 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3975 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3976 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
3977 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3978                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3979                                done || die "ERROR: libgsm not found"; }
3980 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3981 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3982 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3983 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3984 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3985 enabled libopenjpeg       && require_pkg_config libopenjpeg1 openjpeg.h opj_version
3986 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3987 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3988 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3989 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3990 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3991 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3992 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3993 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3994 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3995 enabled libvpx            && {
3996     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3997                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3998     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3999                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4000     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4001     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4002 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4003 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4004 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4005                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4006                                die "ERROR: libx264 version must be >= 0.118."; }
4007 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4008                              { check_cpp_condition x265.h "X265_BUILD >= 9" ||
4009                                die "ERROR: libx265 version must be >= 9."; }
4010 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4011 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4012 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4013                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4014                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4015                                die "ERROR: openssl not found"; }
4016
4017 if enabled gnutls; then
4018     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4019     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4020 fi
4021
4022 # libdc1394 check
4023 if enabled libdc1394; then
4024     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4025         enable libdc1394_2; } ||
4026     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4027         enable libdc1394_1; } ||
4028     die "ERROR: No version of libdc1394 found "
4029 fi
4030
4031 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4032     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4033     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4034     enable sdl
4035 fi
4036
4037 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4038 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4039
4040 check_header linux/fb.h
4041 check_header linux/videodev2.h
4042 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4043
4044 check_header sys/videoio.h
4045
4046 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4047 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4048 # w32api 3.12 had it defined wrong
4049 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4050
4051 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4052 { check_header dev/bktr/ioctl_meteor.h &&
4053   check_header dev/bktr/ioctl_bt848.h; } ||
4054 { check_header machine/ioctl_meteor.h &&
4055   check_header machine/ioctl_bt848.h; } ||
4056 { check_header dev/video/meteor/ioctl_meteor.h &&
4057   check_header dev/video/bktr/ioctl_bt848.h; } ||
4058 check_header dev/ic/bt8xx.h
4059
4060 check_header sndio.h
4061 check_header sys/soundcard.h
4062 check_header soundcard.h
4063
4064 enabled_any alsa_indev alsa_outdev &&
4065     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4066
4067 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4068     check_func jack_port_get_latency_range -ljack
4069
4070 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4071
4072 if enabled libcdio; then
4073     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4074     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4075 fi
4076
4077 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4078
4079 enabled x11grab                                           &&
4080 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4081 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4082 { enabled xlib || die "ERROR: Xlib not found"; }
4083
4084 enabled vdpau &&
4085     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4086     disable vdpau
4087
4088 enabled vdpau && enabled xlib &&
4089     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4090     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4091     enable vdpau_x11
4092
4093 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4094
4095 # add some useful compiler flags if supported
4096 check_cflags -Wdeclaration-after-statement
4097 check_cflags -Wall
4098 check_cflags -Wdisabled-optimization
4099 check_cflags -Wpointer-arith
4100 check_cflags -Wredundant-decls
4101 check_cflags -Wcast-qual
4102 check_cflags -Wwrite-strings
4103 check_cflags -Wtype-limits
4104 check_cflags -Wundef
4105 check_cflags -Wmissing-prototypes
4106 check_cflags -Wstrict-prototypes
4107 enabled extra_warnings && check_cflags -Winline
4108
4109 check_disable_warning(){
4110     warning_flag=-W${1#-Wno-}
4111     test_cflags $warning_flag && add_cflags $1
4112 }
4113
4114 check_disable_warning -Wno-parentheses
4115 check_disable_warning -Wno-switch
4116 check_disable_warning -Wno-format-zero-length
4117 check_disable_warning -Wno-pointer-sign
4118
4119 # add some linker flags
4120 check_ldflags -Wl,--warn-common
4121 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4122 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4123
4124 # add some strip flags
4125 # -wN '..@*' is more selective than -x, but not available everywhere.
4126 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4127
4128 enabled neon_clobber_test &&
4129     check_ldflags -Wl,--wrap,avcodec_open2              \
4130                   -Wl,--wrap,avcodec_decode_audio4      \
4131                   -Wl,--wrap,avcodec_decode_video2      \
4132                   -Wl,--wrap,avcodec_decode_subtitle2   \
4133                   -Wl,--wrap,avcodec_encode_audio2      \
4134                   -Wl,--wrap,avcodec_encode_video2      \
4135                   -Wl,--wrap,avcodec_encode_subtitle    \
4136                   -Wl,--wrap,avresample_convert ||
4137     disable neon_clobber_test
4138
4139 enabled xmm_clobber_test &&
4140     check_ldflags -Wl,--wrap,avcodec_open2              \
4141                   -Wl,--wrap,avcodec_decode_audio4      \
4142                   -Wl,--wrap,avcodec_decode_video2      \
4143                   -Wl,--wrap,avcodec_decode_subtitle2   \
4144                   -Wl,--wrap,avcodec_encode_audio2      \
4145                   -Wl,--wrap,avcodec_encode_video2      \
4146                   -Wl,--wrap,avcodec_encode_subtitle    \
4147                   -Wl,--wrap,avresample_convert         \
4148                   -Wl,--wrap,sws_scale ||
4149     disable xmm_clobber_test
4150
4151 echo "X{};" > $TMPV
4152 if test_ldflags -Wl,--version-script,$TMPV; then
4153     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4154     check_cc <<EOF && enable symver_asm_label
4155 void ff_foo(void) __asm__ ("av_foo@VERSION");
4156 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4157 EOF
4158     check_cc <<EOF && enable symver_gnu_asm
4159 __asm__(".symver ff_foo,av_foo@VERSION");
4160 void ff_foo(void) {}
4161 EOF
4162 fi
4163
4164 if [ -z "$optflags" ]; then
4165     if enabled small; then
4166         optflags=$cflags_size
4167     elif enabled optimizations; then
4168         optflags=$cflags_speed
4169     else
4170         optflags=$cflags_noopt
4171     fi
4172 fi
4173
4174 check_optflags(){
4175     check_cflags "$@"
4176     enabled lto && check_ldflags "$@"
4177 }
4178
4179
4180 if enabled lto; then
4181     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4182     check_cflags  -flto
4183     check_ldflags -flto $cpuflags
4184 fi
4185
4186 check_optflags $optflags
4187 check_optflags -fno-math-errno
4188 check_optflags -fno-signed-zeros
4189
4190 if enabled icc; then
4191     # Just warnings, no remarks
4192     check_cflags -w1
4193     # -wd: Disable following warnings
4194     # 144, 167, 556: -Wno-pointer-sign
4195     # 1292: attribute "foo" ignored
4196     # 1419: external declaration in primary source file
4197     # 10006: ignoring unknown option -fno-signed-zeros
4198     # 10148: ignoring unknown option -Wno-parentheses
4199     # 10156: ignoring option '-W'; no argument required
4200     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4201     # 11030: Warning unknown option --as-needed
4202     # 10156: ignoring option '-export'; no argument required
4203     check_ldflags -wd10156,11030
4204     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4205     enable ebp_available
4206     if enabled x86_32; then
4207         icc_version=$($cc -dumpversion)
4208         test ${icc_version%%.*} -ge 11 &&
4209             check_cflags -falign-stack=maintain-16-byte ||
4210             disable aligned_stack
4211     fi
4212 elif enabled ccc; then
4213     # disable some annoying warnings
4214     add_cflags -msg_disable bitnotint
4215     add_cflags -msg_disable mixfuncvoid
4216     add_cflags -msg_disable nonstandcast
4217     add_cflags -msg_disable unsupieee
4218 elif enabled gcc; then
4219     check_optflags -fno-tree-vectorize
4220     check_cflags -Werror=implicit-function-declaration
4221     check_cflags -Werror=missing-prototypes
4222     check_cflags -Werror=return-type
4223     check_cflags -Werror=declaration-after-statement
4224     check_cflags -Werror=vla
4225     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4226 elif enabled llvm_gcc; then
4227     check_cflags -mllvm -stack-alignment=16
4228 elif enabled clang; then
4229     check_cflags -mllvm -stack-alignment=16
4230     check_cflags -Qunused-arguments
4231     check_cflags -Werror=implicit-function-declaration
4232     check_cflags -Werror=missing-prototypes
4233     check_cflags -Werror=return-type
4234 elif enabled cparser; then
4235     add_cflags -Wno-missing-variable-declarations
4236     add_cflags -Wno-empty-statement
4237 elif enabled armcc; then
4238     # 2523: use of inline assembler is deprecated
4239     add_cflags -W${armcc_opt},--diag_suppress=2523
4240     add_cflags -W${armcc_opt},--diag_suppress=1207
4241     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4242     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4243     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4244     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4245 elif enabled tms470; then
4246     add_cflags -pds=824 -pds=837
4247     disable inline_asm
4248 elif enabled pathscale; then
4249     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4250 elif enabled_any msvc icl; then
4251     enabled x86_32 && disable aligned_stack
4252     enabled_all x86_32 debug && add_cflags -Oy-
4253     enabled debug && add_ldflags -debug
4254     enable pragma_deprecated
4255     if enabled icl; then
4256         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4257         # (correctly) on icl 13.x.
4258         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4259             add_cflags -Qansi-alias
4260         # icl will pass the inline asm tests but inline asm is currently
4261         # not supported (build will fail)
4262         disable inline_asm
4263     fi
4264 fi
4265
4266 case $as_type in
4267     clang)
4268         add_asflags -Qunused-arguments
4269     ;;
4270 esac
4271
4272 case $ld_type in
4273     clang)
4274         check_ldflags -Qunused-arguments
4275     ;;
4276 esac
4277
4278 case $target_os in
4279     osf1)
4280         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4281     ;;
4282     plan9)
4283         add_cppflags -Dmain=plan9_main
4284     ;;
4285 esac
4286
4287 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4288
4289 check_deps $CONFIG_LIST       \
4290            $CONFIG_EXTRA      \
4291            $HAVE_LIST         \
4292            $ALL_COMPONENTS    \
4293
4294 ! enabled_any memalign posix_memalign aligned_malloc &&
4295     enabled_any $need_memalign && enable memalign_hack
4296
4297 for thread in $THREADS_LIST; do
4298     if enabled $thread; then
4299         test -n "$thread_type" &&
4300             die "ERROR: Only one thread type must be selected." ||
4301             thread_type="$thread"
4302     fi
4303 done
4304
4305 echo "install prefix            $prefix"
4306 echo "source path               $source_path"
4307 echo "C compiler                $cc"
4308 echo "C library                 $libc_type"
4309 if test "$host_cc" != "$cc"; then
4310     echo "host C compiler           $host_cc"
4311     echo "host C library            $host_libc_type"
4312 fi
4313 echo "ARCH                      $arch ($cpu)"
4314 if test "$build_suffix" != ""; then
4315     echo "build suffix              $build_suffix"
4316 fi
4317 if test "$extra_version" != ""; then
4318     echo "version string suffix     $extra_version"
4319 fi
4320 echo "big-endian                ${bigendian-no}"
4321 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4322 if enabled x86; then
4323     echo "${yasmexe}                      ${yasm-no}"
4324     echo "MMX enabled               ${mmx-no}"
4325     echo "MMXEXT enabled            ${mmxext-no}"
4326     echo "3DNow! enabled            ${amd3dnow-no}"
4327     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4328     echo "SSE enabled               ${sse-no}"
4329     echo "SSSE3 enabled             ${ssse3-no}"
4330     echo "AVX enabled               ${avx-no}"
4331     echo "XOP enabled               ${xop-no}"
4332     echo "FMA3 enabled              ${fma3-no}"
4333     echo "FMA4 enabled              ${fma4-no}"
4334     echo "i686 features enabled     ${i686-no}"
4335     echo "CMOV is fast              ${fast_cmov-no}"
4336     echo "EBX available             ${ebx_available-no}"
4337     echo "EBP available             ${ebp_available-no}"
4338 fi
4339 if enabled aarch64; then
4340     echo "NEON enabled              ${neon-no}"
4341     echo "VFP enabled               ${vfp-no}"
4342 fi
4343 if enabled arm; then
4344     echo "ARMv5TE enabled           ${armv5te-no}"
4345     echo "ARMv6 enabled             ${armv6-no}"
4346     echo "ARMv6T2 enabled           ${armv6t2-no}"
4347     echo "VFP enabled               ${vfp-no}"
4348     echo "NEON enabled              ${neon-no}"
4349 fi
4350 if enabled ppc; then
4351     echo "AltiVec enabled           ${altivec-no}"
4352     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4353     echo "dcbzl available           ${dcbzl-no}"
4354 fi
4355 if enabled sparc; then
4356     echo "VIS enabled               ${vis-no}"
4357 fi
4358 echo "debug symbols             ${debug-no}"
4359 echo "optimize for size         ${small-no}"
4360 echo "optimizations             ${optimizations-no}"
4361 echo "static                    ${static-no}"
4362 echo "shared                    ${shared-no}"
4363 echo "new filter support        ${avfilter-no}"
4364 echo "network support           ${network-no}"
4365 echo "threading support         ${thread_type-no}"
4366 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4367 echo "SDL support               ${sdl-no}"
4368 test -n "$random_seed" &&
4369     echo "random seed               ${random_seed}"
4370 echo
4371
4372 echo "External libraries:"
4373 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4374 echo
4375
4376 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4377     echo "Enabled ${type}s:"
4378     eval list=\$$(toupper $type)_LIST
4379     print_enabled '_*' $list | print_3_columns
4380     echo
4381 done
4382
4383 license="LGPL version 2.1 or later"
4384 if enabled nonfree; then
4385     license="nonfree and unredistributable"
4386 elif enabled gplv3; then
4387     license="GPL version 3 or later"
4388 elif enabled lgplv3; then
4389     license="LGPL version 3 or later"
4390 elif enabled gpl; then
4391     license="GPL version 2 or later"
4392 fi
4393
4394 echo "License: $license"
4395
4396 echo "Creating config.mak and config.h..."
4397
4398 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4399
4400 config_files="$TMPH config.mak"
4401
4402 cat > config.mak <<EOF
4403 # Automatically generated by configure - do not modify!
4404 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4405 prefix=$prefix
4406 LIBDIR=\$(DESTDIR)$libdir
4407 SHLIBDIR=\$(DESTDIR)$shlibdir
4408 INCDIR=\$(DESTDIR)$incdir
4409 BINDIR=\$(DESTDIR)$bindir
4410 DATADIR=\$(DESTDIR)$datadir
4411 DOCDIR=\$(DESTDIR)$docdir
4412 MANDIR=\$(DESTDIR)$mandir
4413 SRC_PATH=$source_path
4414 CC_IDENT=$cc_ident
4415 ARCH=$arch
4416 CC=$cc
4417 AS=$as
4418 LD=$ld
4419 DEPCC=$dep_cc
4420 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4421 DEPAS=$as
4422 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4423 YASM=$yasmexe
4424 DEPYASM=$yasmexe
4425 AR=$ar
4426 ARFLAGS=$arflags
4427 AR_O=$ar_o
4428 RANLIB=$ranlib
4429 STRIP=$strip
4430 LN_S=$ln_s
4431 CPPFLAGS=$CPPFLAGS
4432 CFLAGS=$CFLAGS
4433 ASFLAGS=$ASFLAGS
4434 AS_C=$AS_C
4435 AS_O=$AS_O
4436 CC_C=$CC_C
4437 CC_E=$CC_E
4438 CC_O=$CC_O
4439 LD_O=$LD_O
4440 LD_LIB=$LD_LIB
4441 LD_PATH=$LD_PATH
4442 DLLTOOL=$dlltool
4443 LDFLAGS=$LDFLAGS
4444 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4445 STRIPFLAGS=$STRIPFLAGS
4446 YASMFLAGS=$YASMFLAGS
4447 BUILDSUF=$build_suffix
4448 FULLNAME=$FULLNAME
4449 LIBPREF=$LIBPREF
4450 LIBSUF=$LIBSUF
4451 LIBNAME=$LIBNAME
4452 SLIBPREF=$SLIBPREF
4453 SLIBSUF=$SLIBSUF
4454 EXESUF=$EXESUF
4455 EXTRA_VERSION=$extra_version
4456 CCDEP=$CCDEP
4457 CCDEP_FLAGS=$CCDEP_FLAGS
4458 ASDEP=$ASDEP
4459 ASDEP_FLAGS=$ASDEP_FLAGS
4460 CC_DEPFLAGS=$CC_DEPFLAGS
4461 AS_DEPFLAGS=$AS_DEPFLAGS
4462 HOSTCC=$host_cc
4463 HOSTLD=$host_ld
4464 HOSTCFLAGS=$host_cflags
4465 HOSTCPPFLAGS=$host_cppflags
4466 HOSTEXESUF=$HOSTEXESUF
4467 HOSTLDFLAGS=$host_ldflags
4468 HOSTLIBS=$host_libs
4469 DEPHOSTCC=$host_cc
4470 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4471 HOSTCCDEP=$HOSTCCDEP
4472 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4473 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4474 HOSTCC_C=$HOSTCC_C
4475 HOSTCC_O=$HOSTCC_O
4476 HOSTLD_O=$HOSTLD_O
4477 TARGET_EXEC=$target_exec $target_exec_args
4478 TARGET_PATH=$target_path
4479 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4480 CFLAGS-avplay=$sdl_cflags
4481 ZLIB=$($ldflags_filter -lz)
4482 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4483 EXTRALIBS=$extralibs
4484 COMPAT_OBJS=$compat_objs
4485 EXEOBJS=$exeobjs
4486 INSTALL=install
4487 LIBTARGET=${LIBTARGET}
4488 SLIBNAME=${SLIBNAME}
4489 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4490 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4491 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4492 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4493 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4494 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4495 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4496 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4497 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4498 EOF
4499
4500 get_version(){
4501     lcname=lib${1}
4502     name=$(toupper $lcname)
4503     file=$source_path/$lcname/version.h
4504     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4505     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4506     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4507     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4508     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4509 }
4510
4511 map 'get_version $v' $LIBRARY_LIST
4512
4513 print_program_libs(){
4514     eval "program_libs=\$${1}_libs"
4515     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4516 }
4517
4518 map 'print_program_libs $v' $PROGRAM_LIST
4519
4520 cat > $TMPH <<EOF
4521 /* Automatically generated by configure - do not modify! */
4522 #ifndef LIBAV_CONFIG_H
4523 #define LIBAV_CONFIG_H
4524 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4525 #define LIBAV_LICENSE "$(c_escape $license)"
4526 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4527 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4528 #define restrict $_restrict
4529 #define EXTERN_PREFIX "${extern_prefix}"
4530 #define EXTERN_ASM ${extern_prefix}
4531 #define SLIBSUF "$SLIBSUF"
4532 EOF
4533
4534 test -n "$malloc_prefix" &&
4535     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4536
4537 if enabled yasm; then
4538     append config_files $TMPASM
4539     printf '' >$TMPASM
4540 fi
4541
4542 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4543
4544 print_config ARCH_   "$config_files" $ARCH_LIST
4545 print_config HAVE_   "$config_files" $HAVE_LIST
4546 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4547                                      $CONFIG_EXTRA      \
4548                                      $ALL_COMPONENTS    \
4549
4550 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4551
4552 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4553 cp_if_changed $TMPH config.h
4554 touch .config
4555
4556 enabled yasm && cp_if_changed $TMPASM config.asm
4557
4558 cat > $TMPH <<EOF
4559 /* Generated by ffconf */
4560 #ifndef AVUTIL_AVCONFIG_H
4561 #define AVUTIL_AVCONFIG_H
4562 EOF
4563
4564 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4565
4566 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4567
4568 cp_if_changed $TMPH libavutil/avconfig.h
4569
4570 test -n "$WARNINGS" && printf "\n$WARNINGS"
4571
4572 # build pkg-config files
4573
4574 pkgconfig_generate(){
4575     name=$1
4576     shortname=${name#lib}${build_suffix}
4577     comment=$2
4578     version=$3
4579     libs=$4
4580     requires=$5
4581     enabled ${name#lib} || return 0
4582     mkdir -p $name
4583     cat <<EOF > $name/$name.pc
4584 prefix=$prefix
4585 exec_prefix=\${prefix}
4586 libdir=$libdir
4587 includedir=$incdir
4588
4589 Name: $name
4590 Description: $comment
4591 Version: $version
4592 Requires: $(enabled shared || echo $requires)
4593 Requires.private: $(enabled shared && echo $requires)
4594 Conflicts:
4595 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4596 Libs.private: $(enabled shared && echo $libs)
4597 Cflags: -I\${includedir}
4598 EOF
4599     cat <<EOF > $name/$name-uninstalled.pc
4600 prefix=
4601 exec_prefix=
4602 libdir=\${pcfiledir}
4603 includedir=${source_path}
4604
4605 Name: $name
4606 Description: $comment
4607 Version: $version
4608 Requires: $requires
4609 Conflicts:
4610 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4611 Cflags: -I\${includedir}
4612 EOF
4613 }
4614
4615 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4616 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4617 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4618 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4619
4620 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4621 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4622 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4623 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4624 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4625 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4626 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"